Merge remote-tracking branch 'secondlife/release/2024.06-atlasaurus' into 2024.06-atlasaurus

2121 files changed, 40176 insertions, 38589 deletions

diff --git a/indra/cmake/00-Common.cmake b/indra/cmake/00-Common.cmake
index 7de12d0063..afe20a6dd3 100644
--- a/indra/cmake/00-Common.cmake
+++ b/indra/cmake/00-Common.cmake
@@ -88,7 +88,7 @@ if (WINDOWS)
   if( ADDRESS_SIZE EQUAL 32 )
     add_compile_options( /arch:SSE2 )
   endif()
-     
+
   # Are we using the crummy Visual Studio KDU build workaround?
   if (NOT VS_DISABLE_FATAL_WARNINGS)
     add_compile_options(/WX)
@@ -109,6 +109,9 @@ if (WINDOWS)
   # https://github.com/actions/runner-images/issues/10004#issuecomment-2153445161
   # can be removed after the above issue is resolved and deployed across GHA
   add_compile_definitions(_DISABLE_CONSTEXPR_MUTEX_CONSTRUCTOR)
+
+  # Allow use of sprintf etc
+  add_compile_definitions(_CRT_SECURE_NO_WARNINGS)
 endif (WINDOWS)
 
 if (LINUX OR CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
diff --git a/indra/cmake/CMakeLists.txt b/indra/cmake/CMakeLists.txt
index be56ef102d..bed7878118 100644
--- a/indra/cmake/CMakeLists.txt
+++ b/indra/cmake/CMakeLists.txt
@@ -22,13 +22,11 @@ set(cmake_SOURCE_FILES
         DragDrop.cmake
         EXPAT.cmake
         FindAutobuild.cmake
-        FMODSTUDIO.cmake
         FreeType.cmake
         GLEXT.cmake
         GLH.cmake
         Havok.cmake
         Hunspell.cmake
-        JsonCpp.cmake
         LLAddBuildTest.cmake
         LLAppearance.cmake
         LLAudio.cmake
diff --git a/indra/cmake/Copy3rdPartyLibs.cmake b/indra/cmake/Copy3rdPartyLibs.cmake
index a1a67512c4..d78f2b90b8 100644
--- a/indra/cmake/Copy3rdPartyLibs.cmake
+++ b/indra/cmake/Copy3rdPartyLibs.cmake
@@ -7,7 +7,6 @@
 include(CMakeCopyIfDifferent)
 include(Linking)
 include(OPENAL)
-include(FMODSTUDIO)
 
 # When we copy our dependent libraries, we almost always want to copy them to
 # both the Release and the RelWithDebInfo staging directories. This has
@@ -50,7 +49,7 @@ if(WINDOWS)
     endif (ADDRESS_SIZE EQUAL 64)
 
     #*******************************
-    # Misc shared libs 
+    # Misc shared libs
 
     set(release_src_dir "${ARCH_PREBUILT_DIRS_RELEASE}")
     set(release_files
@@ -85,12 +84,6 @@ if(WINDOWS)
       endif(ADDRESS_SIZE EQUAL 32)
     endif (USE_BUGSPLAT)
 
-    if (TARGET ll::fmodstudio)
-        # fmodL is included for logging, only one should be picked by manifest
-        set(release_files ${release_files} fmodL.dll)
-        set(release_files ${release_files} fmod.dll)
-    endif ()
-
     if (TARGET ll::openal)
         list(APPEND release_files openal32.dll alut.dll)
     endif ()
@@ -105,14 +98,27 @@ if(WINDOWS)
         set(MSVC_VER 120)
     elseif (MSVC_VERSION GREATER_EQUAL 1910 AND MSVC_VERSION LESS 1920) # Visual Studio 2017
         set(MSVC_VER 140)
+        set(MSVC_TOOLSET_VER 141)
     elseif (MSVC_VERSION GREATER_EQUAL 1920 AND MSVC_VERSION LESS 1930) # Visual Studio 2019
         set(MSVC_VER 140)
+        set(MSVC_TOOLSET_VER 142)
     elseif (MSVC_VERSION GREATER_EQUAL 1930 AND MSVC_VERSION LESS 1950) # Visual Studio 2022
         set(MSVC_VER 140)
+        set(MSVC_TOOLSET_VER 143)
     else (MSVC80)
         MESSAGE(WARNING "New MSVC_VERSION ${MSVC_VERSION} of MSVC: adapt Copy3rdPartyLibs.cmake")
     endif (MSVC80)
 
+    if (MSVC_TOOLSET_VER AND DEFINED ENV{VCTOOLSREDISTDIR})
+        if(ADDRESS_SIZE EQUAL 32)
+            set(redist_find_path "$ENV{VCTOOLSREDISTDIR}x86\\Microsoft.VC${MSVC_TOOLSET_VER}.CRT")
+        else(ADDRESS_SIZE EQUAL 32)
+            set(redist_find_path "$ENV{VCTOOLSREDISTDIR}x64\\Microsoft.VC${MSVC_TOOLSET_VER}.CRT")
+        endif(ADDRESS_SIZE EQUAL 32)
+        get_filename_component(redist_path "${redist_find_path}" ABSOLUTE)
+        MESSAGE(STATUS "VC Runtime redist path: ${redist_path}")
+    endif (MSVC_TOOLSET_VER AND DEFINED ENV{VCTOOLSREDISTDIR})
+
     if(ADDRESS_SIZE EQUAL 32)
         # this folder contains the 32bit DLLs.. (yes really!)
         set(registry_find_path "[HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Windows;Directory]/SysWOW64")
@@ -135,7 +141,14 @@ if(WINDOWS)
             vcruntime${MSVC_VER}.dll
             vcruntime${MSVC_VER}_1.dll
             )
-        if(EXISTS "${registry_path}/${release_msvc_file}")
+        if(redist_path AND EXISTS "${redist_path}/${release_msvc_file}")
+            MESSAGE(STATUS "Copying redist file from ${redist_path}/${release_msvc_file}")
+            to_staging_dirs(
+                ${redist_path}
+                third_party_targets
+                ${release_msvc_file})
+        elseif(EXISTS "${registry_path}/${release_msvc_file}")
+            MESSAGE(STATUS "Copying redist file from ${registry_path}/${release_msvc_file}")
             to_staging_dirs(
                 ${registry_path}
                 third_party_targets
@@ -177,9 +190,8 @@ elseif(DARWIN)
         liburiparser.1.0.27.dylib
        )
 
-    if (TARGET ll::fmodstudio)
-      set(debug_files ${debug_files} libfmodL.dylib)
-      set(release_files ${release_files} libfmod.dylib)
+    if (TARGET ll::openal)
+      list(APPEND release_files libalut.dylib libopenal.dylib)
     endif ()
 
 elseif(LINUX)
@@ -219,11 +231,6 @@ elseif(LINUX)
                  )
      endif()
 
-    if (TARGET ll::fmodstudio)
-      set(debug_files ${debug_files} "libfmodL.so")
-      set(release_files ${release_files} "libfmod.so")
-    endif ()
-
 else(WINDOWS)
     message(STATUS "WARNING: unrecognized platform for staging 3rd party libs, skipping...")
     set(vivox_lib_dir "${CMAKE_SOURCE_DIR}/newview/vivox-runtime/i686-linux")
diff --git a/indra/cmake/FMODSTUDIO.cmake b/indra/cmake/FMODSTUDIO.cmake
deleted file mode 100644
index 38437b7bfb..0000000000
--- a/indra/cmake/FMODSTUDIO.cmake
+++ /dev/null
@@ -1,52 +0,0 @@
-# -*- cmake -*-
-
-include_guard()
-
-# FMODSTUDIO can be set when launching the make using the argument -DUSE_FMODSTUDIO:BOOL=ON
-# When building using proprietary binaries though (i.e. having access to LL private servers),
-# we always build with FMODSTUDIO.
-if (INSTALL_PROPRIETARY)
-  set(USE_FMODSTUDIO ON CACHE BOOL "Using FMODSTUDIO sound library.")
-endif (INSTALL_PROPRIETARY)
-
-# ND: To streamline arguments passed, switch from FMODSTUDIO to USE_FMODSTUDIO
-# To not break all old build scripts convert old arguments but warn about it
-if(FMODSTUDIO)
-  message( WARNING "Use of the FMODSTUDIO argument is deprecated, please switch to USE_FMODSTUDIO")
-  set(USE_FMODSTUDIO ${FMODSTUDIO})
-endif()
-
-if (USE_FMODSTUDIO)
-  add_library( ll::fmodstudio INTERFACE IMPORTED )
-  target_compile_definitions( ll::fmodstudio INTERFACE LL_FMODSTUDIO=1)
-
-  if (FMODSTUDIO_LIBRARY AND FMODSTUDIO_INCLUDE_DIR)
-    # If the path have been specified in the arguments, use that
-
-    target_link_libraries(ll::fmodstudio INTERFACE ${FMODSTUDIO_LIBRARY})
-    target_include_directories( ll::fmodstudio SYSTEM INTERFACE  ${FMODSTUDIO_INCLUDE_DIR})
-  else (FMODSTUDIO_LIBRARY AND FMODSTUDIO_INCLUDE_DIR)
-    # If not, we're going to try to get the package listed in autobuild.xml
-    # Note: if you're not using INSTALL_PROPRIETARY, the package URL should be local (file:/// URL)
-    # as accessing the private LL location will fail if you don't have the credential
-    include(Prebuilt)
-    if (NOT USESYSTEMLIBS)
-    use_prebuilt_binary(fmodstudio)
-    endif ()
-    if (WINDOWS)
-      target_link_libraries( ll::fmodstudio INTERFACE  fmod_vc)
-    elseif (DARWIN)
-      #despite files being called libfmod.dylib, we are searching for fmod
-      target_link_libraries( ll::fmodstudio INTERFACE  fmod)
-    elseif (LINUX)
-      target_link_libraries( ll::fmodstudio INTERFACE  fmod)
-    endif (WINDOWS)
-
-    if (NOT USESYSTEMLIBS)
-    target_include_directories( ll::fmodstudio SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include/fmodstudio)
-    endif ()
-  endif (FMODSTUDIO_LIBRARY AND FMODSTUDIO_INCLUDE_DIR)
-else()
-  set( USE_FMODSTUDIO "OFF")
-endif ()
-
diff --git a/indra/cmake/GLM.cmake b/indra/cmake/GLM.cmake
new file mode 100644
index 0000000000..84b155f6c5
--- /dev/null
+++ b/indra/cmake/GLM.cmake
@@ -0,0 +1,7 @@
+# -*- cmake -*-
+include(Prebuilt)
+
+add_library( ll::glm INTERFACE IMPORTED )
+
+use_system_binary( glm )
+use_prebuilt_binary(glm)
diff --git a/indra/cmake/JsonCpp.cmake b/indra/cmake/JsonCpp.cmake
deleted file mode 100644
index a9b992ab20..0000000000
--- a/indra/cmake/JsonCpp.cmake
+++ /dev/null
@@ -1,17 +0,0 @@
-# -*- cmake -*-
-
-include(Prebuilt)
-include_guard()
-add_library( ll::jsoncpp INTERFACE IMPORTED )
-
-use_system_binary(jsoncpp)
-
-use_prebuilt_binary(jsoncpp)
-if (WINDOWS)
-  target_link_libraries( ll::jsoncpp INTERFACE json_libmd.lib )
-elseif (DARWIN)
-  target_link_libraries( ll::jsoncpp INTERFACE libjson_darwin_libmt.a )
-elseif (LINUX)
-  target_link_libraries( ll::jsoncpp INTERFACE libjson_linux-gcc-11_libmt.a )
-endif (WINDOWS)
-target_include_directories( ll::jsoncpp SYSTEM INTERFACE ${LIBS_PREBUILT_DIR}/include)
diff --git a/indra/cmake/LLCommon.cmake b/indra/cmake/LLCommon.cmake
index 869d5805f2..9e3707ff17 100644
--- a/indra/cmake/LLCommon.cmake
+++ b/indra/cmake/LLCommon.cmake
@@ -6,6 +6,5 @@ include(EXPAT)
 include(Tracy)
 include(xxHash)
 include(ZLIBNG)
-include(JsonCpp)
 
 include(XmlRpcEpi)
diff --git a/indra/cmake/OPENAL.cmake b/indra/cmake/OPENAL.cmake
index cc7deac2d9..6555027dc1 100644
--- a/indra/cmake/OPENAL.cmake
+++ b/indra/cmake/OPENAL.cmake
@@ -44,6 +44,9 @@ if (USE_OPENAL)
             alut
             )
   else()
-    message(FATAL_ERROR "OpenAL is not available for this platform")
+    target_link_libraries( ll::openal INTERFACE
+            openal
+            alut
+            )
   endif()
 endif ()
diff --git a/indra/cmake/TinyEXR.cmake b/indra/cmake/TinyEXR.cmake
index c3053b8149..7500b774d8 100644
--- a/indra/cmake/TinyEXR.cmake
+++ b/indra/cmake/TinyEXR.cmake
@@ -5,5 +5,5 @@ if (NOT USESYSTEMLIBS)
 use_prebuilt_binary(tinyexr)
 endif ()
 
-set(TINYEXR_INCLUDE_DIR ${LIBS_PREBUILT_DIR}/include/tinyexr) 
+set(TINYEXR_INCLUDE_DIR ${LIBS_PREBUILT_DIR}/include/tinyexr)
 
diff --git a/indra/cmake/Variables.cmake b/indra/cmake/Variables.cmake
index ab8add8af8..f746cdab78 100644
--- a/indra/cmake/Variables.cmake
+++ b/indra/cmake/Variables.cmake
@@ -5,7 +5,7 @@
 #
 # Platform variables:
 #
-#   DARWIN  - Mac OS X
+#   DARWIN  - macOS
 #   LINUX   - Linux
 #   WINDOWS - Windows
 
diff --git a/indra/cmake/WebRTC.cmake b/indra/cmake/WebRTC.cmake
index d336dcdb10..3120968560 100644
--- a/indra/cmake/WebRTC.cmake
+++ b/indra/cmake/WebRTC.cmake
@@ -18,7 +18,7 @@ elseif (DARWIN)
     FIND_LIBRARY(AUDIOTOOLBOX_LIBRARY AudioToolbox)
     FIND_LIBRARY(COREFOUNDATION_LIBRARY CoreFoundation)
     FIND_LIBRARY(COCOA_LIBRARY Cocoa)
-    
+
     target_link_libraries( ll::webrtc INTERFACE
         libwebrtc.a
         ${COREAUDIO_LIBRARY}
diff --git a/indra/lib/python/indra/util/llmanifest.py b/indra/lib/python/indra/util/llmanifest.py
index 5f873df425..38de9c7cf1 100755
--- a/indra/lib/python/indra/util/llmanifest.py
+++ b/indra/lib/python/indra/util/llmanifest.py
@@ -116,7 +116,7 @@ BASE_ARGUMENTS=[
     dict(name='build', description='Build directory.', default=DEFAULT_SRCTREE),
     dict(name='buildtype', description='Build type (i.e. Debug, Release, RelWithDebInfo).', default=None),
     dict(name='bundleid',
-         description="""The Mac OS X Bundle identifier.""",
+         description="""The macOS Bundle identifier.""",
          default="com.secondlife.indra.viewer"),
     dict(name='channel',
          description="""The channel to use for updates, packaging, settings name, etc.""",
@@ -146,7 +146,7 @@ BASE_ARGUMENTS=[
     dict(name='signature',
          description="""This specifies an identity to sign the viewer with, if any.
         If no value is supplied, the default signature will be used, if any. Currently
-        only used on Mac OS X.""",
+        only used on macOS.""",
          default=None),
     dict(name='source',
          description='Source directory.',
diff --git a/indra/llappearance/llavatarappearance.cpp b/indra/llappearance/llavatarappearance.cpp
index 83e43b11b7..95d55c835f 100644
--- a/indra/llappearance/llavatarappearance.cpp
+++ b/indra/llappearance/llavatarappearance.cpp
@@ -64,19 +64,19 @@ class LLAvatarBoneInfo
     friend class LLAvatarAppearance;
     friend class LLAvatarSkeletonInfo;
 public:
-    LLAvatarBoneInfo() : mIsJoint(FALSE) {}
+    LLAvatarBoneInfo() : mIsJoint(false) {}
     ~LLAvatarBoneInfo()
     {
         std::for_each(mChildren.begin(), mChildren.end(), DeletePointer());
         mChildren.clear();
     }
-    BOOL parseXml(LLXmlTreeNode* node);
+    bool parseXml(LLXmlTreeNode* node);
 
 private:
     std::string mName;
     std::string mSupport;
     std::string mAliases;
-    BOOL mIsJoint;
+    bool mIsJoint;
     LLVector3 mPos;
     LLVector3 mEnd;
     LLVector3 mRot;
@@ -101,7 +101,7 @@ public:
         std::for_each(mBoneInfoList.begin(), mBoneInfoList.end(), DeletePointer());
         mBoneInfoList.clear();
     }
-    BOOL parseXml(LLXmlTreeNode* node);
+    bool parseXml(LLXmlTreeNode* node);
     S32 getNumBones() const { return mNumBones; }
     S32 getNumCollisionVolumes() const { return mNumCollisionVolumes; }
 
@@ -164,19 +164,7 @@ LLAvatarAppearanceDefines::LLAvatarAppearanceDictionary* LLAvatarAppearance::sAv
 
 LLAvatarAppearance::LLAvatarAppearance(LLWearableData* wearable_data) :
     LLCharacter(),
-    mIsDummy(FALSE),
-    mTexSkinColor( NULL ),
-    mTexHairColor( NULL ),
-    mTexEyeColor( NULL ),
-    mPelvisToFoot(0.f),
-    mHeadOffset(),
-    mRoot(NULL),
-    mWearableData(wearable_data),
-    mNumBones(0),
-    mNumCollisionVolumes(0),
-    mCollisionVolumes(NULL),
-    mIsBuilt(FALSE),
-    mInitFlags(0)
+    mWearableData(wearable_data)
 {
     llassert_always(mWearableData);
     mBakedTextureDatas.resize(LLAvatarAppearanceDefines::BAKED_NUM_INDICES);
@@ -222,14 +210,14 @@ void LLAvatarAppearance::initInstance()
             mesh->setName(mesh_name);
             mesh->setMeshID(mesh_index);
             mesh->setPickName(mesh_dict->mPickName);
-            mesh->setIsTransparent(FALSE);
+            mesh->setIsTransparent(false);
             switch((S32)mesh_index)
             {
                 case MESH_ID_HAIR:
-                    mesh->setIsTransparent(TRUE);
+                    mesh->setIsTransparent(true);
                     break;
                 case MESH_ID_SKIRT:
-                    mesh->setIsTransparent(TRUE);
+                    mesh->setIsTransparent(true);
                     break;
                 case MESH_ID_EYEBALL_LEFT:
                 case MESH_ID_EYEBALL_RIGHT:
@@ -331,7 +319,7 @@ void LLAvatarAppearance::initClass(const std::string& avatar_file_name_arg, cons
         avatar_file_name = gDirUtilp->getExpandedFilename(LL_PATH_CHARACTER,AVATAR_DEFAULT_CHAR + "_lad.xml");
     }
     LLXmlTree xml_tree;
-    BOOL success = xml_tree.parseFile( avatar_file_name, FALSE );
+    bool success = xml_tree.parseFile( avatar_file_name, false );
     if (!success)
     {
         LL_ERRS() << "Problem reading avatar configuration file:" << avatar_file_name << LL_ENDL;
@@ -537,11 +525,11 @@ void LLAvatarAppearance::computeBodySize()
     new_body_size.mV[VZ] = mPelvisToFoot +
                        // the sqrt(2) correction below is an approximate
                        // correction to get to the top of the head
-                       F_SQRT2 * (skull.mV[VZ] * head_scale.mV[VZ]) + 
-                       head.mV[VZ] * neck_scale.mV[VZ] + 
-                       neck.mV[VZ] * chest_scale.mV[VZ] + 
-                       chest.mV[VZ] * torso_scale.mV[VZ] + 
-                       torso.mV[VZ] * pelvis_scale.mV[VZ]; 
+                       F_SQRT2 * (skull.mV[VZ] * head_scale.mV[VZ]) +
+                       head.mV[VZ] * neck_scale.mV[VZ] +
+                       neck.mV[VZ] * chest_scale.mV[VZ] +
+                       chest.mV[VZ] * torso_scale.mV[VZ] +
+                       torso.mV[VZ] * pelvis_scale.mV[VZ];
 
     // TODO -- measure the real depth and width
     new_body_size.mV[VX] = DEFAULT_AGENT_DEPTH;
@@ -561,17 +549,17 @@ void LLAvatarAppearance::computeBodySize()
 //-----------------------------------------------------------------------------
 // parseSkeletonFile()
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::parseSkeletonFile(const std::string& filename, LLXmlTree& skeleton_xml_tree)
+bool LLAvatarAppearance::parseSkeletonFile(const std::string& filename, LLXmlTree& skeleton_xml_tree)
 {
     //-------------------------------------------------------------------------
     // parse the file
     //-------------------------------------------------------------------------
-    BOOL parsesuccess = skeleton_xml_tree.parseFile( filename, FALSE );
+    bool parsesuccess = skeleton_xml_tree.parseFile( filename, false );
 
     if (!parsesuccess)
     {
         LL_ERRS() << "Can't parse skeleton file: " << filename << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // now sanity check xml file
@@ -579,13 +567,13 @@ BOOL LLAvatarAppearance::parseSkeletonFile(const std::string& filename, LLXmlTre
     if (!root)
     {
         LL_ERRS() << "No root node found in avatar skeleton file: " << filename << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if( !root->hasName( "linden_skeleton" ) )
     {
         LL_ERRS() << "Invalid avatar skeleton file header: " << filename << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     std::string version;
@@ -593,16 +581,16 @@ BOOL LLAvatarAppearance::parseSkeletonFile(const std::string& filename, LLXmlTre
     if( !root->getFastAttributeString( version_string, version ) || ((version != "1.0") && (version != "2.0")))
     {
         LL_ERRS() << "Invalid avatar skeleton file version: " << version << " in file: " << filename << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // setupBone()
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::setupBone(const LLAvatarBoneInfo* info, LLJoint* parent, S32 &volume_num, S32 &joint_num)
+bool LLAvatarAppearance::setupBone(const LLAvatarBoneInfo* info, LLJoint* parent, S32 &volume_num, S32 &joint_num)
 {
     LLJoint* joint = NULL;
 
@@ -618,7 +606,7 @@ BOOL LLAvatarAppearance::setupBone(const LLAvatarBoneInfo* info, LLJoint* parent
         if (!joint)
         {
             LL_WARNS() << "Too many bones" << LL_ENDL;
-            return FALSE;
+            return false;
         }
         joint->setName( info->mName );
     }
@@ -627,7 +615,7 @@ BOOL LLAvatarAppearance::setupBone(const LLAvatarBoneInfo* info, LLJoint* parent
         if (volume_num >= (S32)mNumCollisionVolumes)
         {
             LL_WARNS() << "Too many collision volumes" << LL_ENDL;
-            return FALSE;
+            return false;
         }
         joint = (&mCollisionVolumes[volume_num]);
         joint->setName( info->mName );
@@ -667,17 +655,17 @@ BOOL LLAvatarAppearance::setupBone(const LLAvatarBoneInfo* info, LLJoint* parent
     {
         if (!setupBone(child_info, joint, volume_num, joint_num))
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // allocateCharacterJoints()
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::allocateCharacterJoints( U32 num )
+bool LLAvatarAppearance::allocateCharacterJoints( U32 num )
 {
     if (mSkeleton.size() != num)
     {
@@ -686,14 +674,14 @@ BOOL LLAvatarAppearance::allocateCharacterJoints( U32 num )
         mNumBones = num;
     }
 
-    return TRUE;
+    return true;
 }
 
 
 //-----------------------------------------------------------------------------
 // buildSkeleton()
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::buildSkeleton(const LLAvatarSkeletonInfo *info)
+bool LLAvatarAppearance::buildSkeleton(const LLAvatarSkeletonInfo *info)
 {
     LL_DEBUGS("BVH") << "numBones " << info->mNumBones << " numCollisionVolumes " << info->mNumCollisionVolumes << LL_ENDL;
 
@@ -701,7 +689,7 @@ BOOL LLAvatarAppearance::buildSkeleton(const LLAvatarSkeletonInfo *info)
     if (!allocateCharacterJoints(info->mNumBones))
     {
         LL_ERRS() << "Can't allocate " << info->mNumBones << " joints" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // allocate volumes
@@ -710,7 +698,7 @@ BOOL LLAvatarAppearance::buildSkeleton(const LLAvatarSkeletonInfo *info)
         if (!allocateCollisionVolumes(info->mNumCollisionVolumes))
         {
             LL_ERRS() << "Can't allocate " << info->mNumCollisionVolumes << " collision volumes" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
 
@@ -721,11 +709,11 @@ BOOL LLAvatarAppearance::buildSkeleton(const LLAvatarSkeletonInfo *info)
         if (!setupBone(bone_info, NULL, current_volume_num, current_joint_num))
         {
             LL_ERRS() << "Error parsing bone in skeleton file" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -790,7 +778,7 @@ void LLAvatarAppearance::buildCharacter()
     //-------------------------------------------------------------------------
     mRoot->removeAllChildren();
     mJointMap.clear();
-    mIsBuilt = FALSE;
+    mIsBuilt = false;
 
     //-------------------------------------------------------------------------
     // clear mesh data
@@ -808,10 +796,10 @@ void LLAvatarAppearance::buildCharacter()
     //-------------------------------------------------------------------------
     LLTimer timer;
 
-    BOOL status = loadAvatar();
+    bool status = loadAvatar();
     stop_glerror();
 
-//  gPrintMessagesThisFrame = TRUE;
+//  gPrintMessagesThisFrame = true;
     LL_DEBUGS() << "Avatar load took " << timer.getElapsedTimeF32() << " seconds." << LL_ENDL;
 
     if (!status)
@@ -881,12 +869,12 @@ void LLAvatarAppearance::buildCharacter()
     // SL-315
     mPelvisp->setPosition( LLVector3(0.0f, 0.0f, 0.0f) );
 
-    mIsBuilt = TRUE;
+    mIsBuilt = true;
     stop_glerror();
 
 }
 
-BOOL LLAvatarAppearance::loadAvatar()
+bool LLAvatarAppearance::loadAvatar()
 {
 //  LL_RECORD_BLOCK_TIME(FTM_LOAD_AVATAR);
 
@@ -894,7 +882,7 @@ BOOL LLAvatarAppearance::loadAvatar()
     if( !buildSkeleton(sAvatarSkeletonInfo) )
     {
         LL_ERRS() << "avatar file: buildSkeleton() failed" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // initialize mJointAliasMap
@@ -904,14 +892,14 @@ BOOL LLAvatarAppearance::loadAvatar()
     if( !loadSkeletonNode() )
     {
         LL_ERRS() << "avatar file: loadNodeSkeleton() failed" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // avatar_lad.xml : <mesh>
     if( !loadMeshNodes() )
     {
         LL_ERRS() << "avatar file: loadNodeMesh() failed" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // avatar_lad.xml : <global_color>
@@ -921,13 +909,13 @@ BOOL LLAvatarAppearance::loadAvatar()
         if( !mTexSkinColor->setInfo( sAvatarXmlInfo->mTexSkinColorInfo ) )
         {
             LL_ERRS() << "avatar file: mTexSkinColor->setInfo() failed" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
     else
     {
         LL_ERRS() << "<global_color> name=\"skin_color\" not found" << LL_ENDL;
-        return FALSE;
+        return false;
     }
     if( sAvatarXmlInfo->mTexHairColorInfo )
     {
@@ -935,13 +923,13 @@ BOOL LLAvatarAppearance::loadAvatar()
         if( !mTexHairColor->setInfo( sAvatarXmlInfo->mTexHairColorInfo ) )
         {
             LL_ERRS() << "avatar file: mTexHairColor->setInfo() failed" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
     else
     {
         LL_ERRS() << "<global_color> name=\"hair_color\" not found" << LL_ENDL;
-        return FALSE;
+        return false;
     }
     if( sAvatarXmlInfo->mTexEyeColorInfo )
     {
@@ -949,26 +937,26 @@ BOOL LLAvatarAppearance::loadAvatar()
         if( !mTexEyeColor->setInfo( sAvatarXmlInfo->mTexEyeColorInfo ) )
         {
             LL_ERRS() << "avatar file: mTexEyeColor->setInfo() failed" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
     else
     {
         LL_ERRS() << "<global_color> name=\"eye_color\" not found" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // avatar_lad.xml : <layer_set>
     if (sAvatarXmlInfo->mLayerInfoList.empty())
     {
         LL_ERRS() << "avatar file: missing <layer_set> node" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if (sAvatarXmlInfo->mMorphMaskInfoList.empty())
     {
         LL_ERRS() << "avatar file: missing <morph_masks> node" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // avatar_lad.xml : <morph_masks>
@@ -982,7 +970,7 @@ BOOL LLAvatarAppearance::loadAvatar()
             morph_param = getVisualParam(name->c_str());
             if (morph_param)
             {
-                BOOL invert = info->mInvert;
+                bool invert = info->mInvert;
                 addMaskedMorph(baked, morph_param, invert, info->mLayer);
             }
         }
@@ -1010,24 +998,24 @@ BOOL LLAvatarAppearance::loadAvatar()
         {
             delete driver_param;
             LL_WARNS() << "avatar file: driver_param->parseData() failed" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // loadSkeletonNode(): loads <skeleton> node from XML tree
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::loadSkeletonNode ()
+bool LLAvatarAppearance::loadSkeletonNode ()
 {
     mRoot->addChild( mSkeleton[0] );
 
     // make meshes children before calling parent version of the function
     for (LLAvatarJoint* joint : mMeshLOD)
     {
-        joint->mUpdateXform = FALSE;
+        joint->mUpdateXform = false;
         joint->setMeshesToChildren();
     }
 
@@ -1064,7 +1052,7 @@ BOOL LLAvatarAppearance::loadSkeletonNode ()
             if (!param->setInfo(info))
             {
                 delete param;
-                return FALSE;
+                return false;
             }
             else
             {
@@ -1075,13 +1063,13 @@ BOOL LLAvatarAppearance::loadSkeletonNode ()
     }
 
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // loadMeshNodes(): loads <mesh> nodes from XML tree
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::loadMeshNodes()
+bool LLAvatarAppearance::loadMeshNodes()
 {
     for (const LLAvatarXmlInfo::LLAvatarMeshInfo* info : sAvatarXmlInfo->mMeshInfoList)
     {
@@ -1090,7 +1078,7 @@ BOOL LLAvatarAppearance::loadMeshNodes()
 
         LLAvatarJointMesh* mesh = NULL;
         U8 mesh_id = 0;
-        BOOL found_mesh_id = FALSE;
+        bool found_mesh_id = false;
 
         /* if (type == "hairMesh")
             switch(lod)
@@ -1103,7 +1091,7 @@ BOOL LLAvatarAppearance::loadMeshNodes()
             if (type.compare(mesh_dict->mName) == 0)
             {
                 mesh_id = mesh_index;
-                found_mesh_id = TRUE;
+                found_mesh_id = true;
                 break;
             }
         }
@@ -1117,13 +1105,13 @@ BOOL LLAvatarAppearance::loadMeshNodes()
             else
             {
                 LL_WARNS() << "Avatar file: <mesh> has invalid lod setting " << lod << LL_ENDL;
-                return FALSE;
+                return false;
             }
         }
         else
         {
             LL_WARNS() << "Ignoring unrecognized mesh type: " << type << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         //  LL_INFOS() << "Parsing mesh data for " << type << "..." << LL_ENDL;
@@ -1146,7 +1134,7 @@ BOOL LLAvatarAppearance::loadMeshNodes()
             {
                 // This should never happen
                 LL_WARNS("Avatar") << "Could not find avatar mesh: " << info->mReferenceMeshName << LL_ENDL;
-                return FALSE;
+                return false;
             }
         }
         else
@@ -1158,7 +1146,7 @@ BOOL LLAvatarAppearance::loadMeshNodes()
         if( !poly_mesh )
         {
             LL_WARNS() << "Failed to load mesh of type " << type << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         // Multimap insert
@@ -1173,7 +1161,7 @@ BOOL LLAvatarAppearance::loadMeshNodes()
             if (!param->setInfo((LLPolyMorphTargetInfo*)info_pair.first))
             {
                 delete param;
-                return FALSE;
+                return false;
             }
             else
             {
@@ -1191,15 +1179,15 @@ BOOL LLAvatarAppearance::loadMeshNodes()
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // loadLayerSets()
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::loadLayersets()
+bool LLAvatarAppearance::loadLayersets()
 {
-    BOOL success = TRUE;
+    bool success = true;
     for (LLTexLayerSetInfo* layerset_info : sAvatarXmlInfo->mLayerInfoList)
     {
         if (isSelf())
@@ -1212,7 +1200,7 @@ BOOL LLAvatarAppearance::loadLayersets()
                 stop_glerror();
                 delete layer_set;
                 LL_WARNS() << "avatar file: layer_set->setInfo() failed" << LL_ENDL;
-                return FALSE;
+                return false;
             }
 
             // scan baked textures and associate the layerset with the appropriate one
@@ -1234,7 +1222,7 @@ BOOL LLAvatarAppearance::loadLayersets()
             {
                 LL_WARNS() << "<layer_set> has invalid body_region attribute" << LL_ENDL;
                 delete layer_set;
-                return FALSE;
+                return false;
             }
 
             // scan morph masks and let any affected layers know they have an associated morph
@@ -1243,12 +1231,12 @@ BOOL LLAvatarAppearance::loadLayersets()
                 LLTexLayerInterface* layer = layer_set->findLayerByName(morph->mLayer);
                 if (layer)
                 {
-                    layer->setHasMorph(TRUE);
+                    layer->setHasMorph(true);
                 }
                 else
                 {
                     LL_WARNS() << "Could not find layer named " << morph->mLayer << " to set morph flag" << LL_ENDL;
-                    success = FALSE;
+                    success = false;
                 }
             }
         }
@@ -1341,19 +1329,19 @@ LLPolyMesh* LLAvatarAppearance::getUpperBodyMesh()
 
 
 // virtual
-BOOL LLAvatarAppearance::isValid() const
+bool LLAvatarAppearance::isValid() const
 {
     // This should only be called on ourself.
     if (!isSelf())
     {
         LL_ERRS() << "Called LLAvatarAppearance::isValid() on when isSelf() == false" << LL_ENDL;
     }
-    return TRUE;
+    return true;
 }
 
 
 // adds a morph mask to the appropriate baked texture structure
-void LLAvatarAppearance::addMaskedMorph(EBakedTextureIndex index, LLVisualParam* morph_target, BOOL invert, std::string layer)
+void LLAvatarAppearance::addMaskedMorph(EBakedTextureIndex index, LLVisualParam* morph_target, bool invert, std::string layer)
 {
     if (index < BAKED_NUM_INDICES)
     {
@@ -1364,7 +1352,7 @@ void LLAvatarAppearance::addMaskedMorph(EBakedTextureIndex index, LLVisualParam*
 
 
 //static
-BOOL LLAvatarAppearance::teToColorParams( ETextureIndex te, U32 *param_name )
+bool LLAvatarAppearance::teToColorParams( ETextureIndex te, U32 *param_name )
 {
     switch( te )
     {
@@ -1448,10 +1436,10 @@ BOOL LLAvatarAppearance::teToColorParams( ETextureIndex te, U32 *param_name )
 
         default:
             llassert(0);
-            return FALSE;
+            return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLAvatarAppearance::setClothesColor( ETextureIndex te, const LLColor4& new_color)
@@ -1459,9 +1447,9 @@ void LLAvatarAppearance::setClothesColor( ETextureIndex te, const LLColor4& new_
     U32 param_name[3];
     if( teToColorParams( te, param_name ) )
     {
-        setVisualParamWeight( param_name[0], new_color.mV[VX]);
-        setVisualParamWeight( param_name[1], new_color.mV[VY]);
-        setVisualParamWeight( param_name[2], new_color.mV[VZ]);
+        setVisualParamWeight( param_name[0], new_color.mV[VRED]);
+        setVisualParamWeight( param_name[1], new_color.mV[VGREEN]);
+        setVisualParamWeight( param_name[2], new_color.mV[VBLUE]);
     }
 }
 
@@ -1471,9 +1459,9 @@ LLColor4 LLAvatarAppearance::getClothesColor( ETextureIndex te )
     U32 param_name[3];
     if( teToColorParams( te, param_name ) )
     {
-        color.mV[VX] = getVisualParamWeight( param_name[0] );
-        color.mV[VY] = getVisualParamWeight( param_name[1] );
-        color.mV[VZ] = getVisualParamWeight( param_name[2] );
+        color.mV[VRED] = getVisualParamWeight( param_name[0] );
+        color.mV[VGREEN] = getVisualParamWeight( param_name[1] );
+        color.mV[VBLUE] = getVisualParamWeight( param_name[2] );
     }
     return color;
 }
@@ -1507,7 +1495,7 @@ LLColor4 LLAvatarAppearance::getGlobalColor( const std::string& color_name ) con
 
 // Unlike most wearable functions, this works for both self and other.
 // virtual
-BOOL LLAvatarAppearance::isWearingWearableType(LLWearableType::EType type) const
+bool LLAvatarAppearance::isWearingWearableType(LLWearableType::EType type) const
 {
     return mWearableData->getWearableCount(type) > 0;
 }
@@ -1524,7 +1512,7 @@ LLTexLayerSet* LLAvatarAppearance::getAvatarLayerSet(EBakedTextureIndex baked_in
 //-----------------------------------------------------------------------------
 // allocateCollisionVolumes()
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::allocateCollisionVolumes( U32 num )
+bool LLAvatarAppearance::allocateCollisionVolumes( U32 num )
 {
     if (mNumCollisionVolumes !=num)
     {
@@ -1535,27 +1523,27 @@ BOOL LLAvatarAppearance::allocateCollisionVolumes( U32 num )
         if (!mCollisionVolumes)
         {
             LL_WARNS() << "Failed to allocate collision volumes" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         mNumCollisionVolumes = num;
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // LLAvatarBoneInfo::parseXml()
 //-----------------------------------------------------------------------------
-BOOL LLAvatarBoneInfo::parseXml(LLXmlTreeNode* node)
+bool LLAvatarBoneInfo::parseXml(LLXmlTreeNode* node)
 {
     if (node->hasName("bone"))
     {
-        mIsJoint = TRUE;
+        mIsJoint = true;
         static LLStdStringHandle name_string = LLXmlTree::addAttributeString("name");
         if (!node->getFastAttributeString(name_string, mName))
         {
             LL_WARNS() << "Bone without name" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         static LLStdStringHandle aliases_string = LLXmlTree::addAttributeString("aliases");
@@ -1563,7 +1551,7 @@ BOOL LLAvatarBoneInfo::parseXml(LLXmlTreeNode* node)
     }
     else if (node->hasName("collision_volume"))
     {
-        mIsJoint = FALSE;
+        mIsJoint = false;
         static LLStdStringHandle name_string = LLXmlTree::addAttributeString("name");
         if (!node->getFastAttributeString(name_string, mName))
         {
@@ -1573,28 +1561,28 @@ BOOL LLAvatarBoneInfo::parseXml(LLXmlTreeNode* node)
     else
     {
         LL_WARNS() << "Invalid node " << node->getName() << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     static LLStdStringHandle pos_string = LLXmlTree::addAttributeString("pos");
     if (!node->getFastAttributeVector3(pos_string, mPos))
     {
         LL_WARNS() << "Bone without position" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     static LLStdStringHandle rot_string = LLXmlTree::addAttributeString("rot");
     if (!node->getFastAttributeVector3(rot_string, mRot))
     {
         LL_WARNS() << "Bone without rotation" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     static LLStdStringHandle scale_string = LLXmlTree::addAttributeString("scale");
     if (!node->getFastAttributeVector3(scale_string, mScale))
     {
         LL_WARNS() << "Bone without scale" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     static LLStdStringHandle end_string = LLXmlTree::addAttributeString("end");
@@ -1617,7 +1605,7 @@ BOOL LLAvatarBoneInfo::parseXml(LLXmlTreeNode* node)
         if (!node->getFastAttributeVector3(pivot_string, mPivot))
         {
             LL_WARNS() << "Bone without pivot" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
 
@@ -1629,23 +1617,23 @@ BOOL LLAvatarBoneInfo::parseXml(LLXmlTreeNode* node)
         if (!child_info->parseXml(child))
         {
             delete child_info;
-            return FALSE;
+            return false;
         }
         mChildren.push_back(child_info);
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // LLAvatarSkeletonInfo::parseXml()
 //-----------------------------------------------------------------------------
-BOOL LLAvatarSkeletonInfo::parseXml(LLXmlTreeNode* node)
+bool LLAvatarSkeletonInfo::parseXml(LLXmlTreeNode* node)
 {
     static LLStdStringHandle num_bones_string = LLXmlTree::addAttributeString("num_bones");
     if (!node->getFastAttributeS32(num_bones_string, mNumBones))
     {
         LL_WARNS() << "Couldn't find number of bones." << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     static LLStdStringHandle num_collision_volumes_string = LLXmlTree::addAttributeString("num_collision_volumes");
@@ -1659,11 +1647,11 @@ BOOL LLAvatarSkeletonInfo::parseXml(LLXmlTreeNode* node)
         {
             delete info;
             LL_WARNS() << "Error parsing bone in skeleton file" << LL_ENDL;
-            return FALSE;
+            return false;
         }
         mBoneInfoList.push_back(info);
     }
-    return TRUE;
+    return true;
 }
 
 //Make aliases for joint and push to map.
@@ -1731,13 +1719,13 @@ const LLAvatarAppearance::joint_alias_map_t& LLAvatarAppearance::getJointAliases
 //-----------------------------------------------------------------------------
 // parseXmlSkeletonNode(): parses <skeleton> nodes from XML tree
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlSkeletonNode(LLXmlTreeNode* root)
+bool LLAvatarAppearance::LLAvatarXmlInfo::parseXmlSkeletonNode(LLXmlTreeNode* root)
 {
     LLXmlTreeNode* node = root->getChildByName( "skeleton" );
     if( !node )
     {
         LL_WARNS() << "avatar file: missing <skeleton>" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     LLXmlTreeNode* child;
@@ -1757,14 +1745,14 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlSkeletonNode(LLXmlTreeNode* ro
             {
                 LL_WARNS() << "Unknown param type." << LL_ENDL;
             }
-            return FALSE;
+            return false;
         }
 
         LLPolySkeletalDistortionInfo *info = new LLPolySkeletalDistortionInfo;
         if (!info->parseXml(child))
         {
             delete info;
-            return FALSE;
+            return false;
         }
 
         mSkeletalDistortionInfoList.push_back(info);
@@ -1782,7 +1770,7 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlSkeletonNode(LLXmlTreeNode* ro
         {
             LL_WARNS() << "No name supplied for attachment point." << LL_ENDL;
             delete info;
-            return FALSE;
+            return false;
         }
 
         static LLStdStringHandle joint_string = LLXmlTree::addAttributeString("joint");
@@ -1790,19 +1778,19 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlSkeletonNode(LLXmlTreeNode* ro
         {
             LL_WARNS() << "No bone declared in attachment point " << info->mName << LL_ENDL;
             delete info;
-            return FALSE;
+            return false;
         }
 
         static LLStdStringHandle position_string = LLXmlTree::addAttributeString("position");
         if (child->getFastAttributeVector3(position_string, info->mPosition))
         {
-            info->mHasPosition = TRUE;
+            info->mHasPosition = true;
         }
 
         static LLStdStringHandle rotation_string = LLXmlTree::addAttributeString("rotation");
         if (child->getFastAttributeVector3(rotation_string, info->mRotationEuler))
         {
-            info->mHasRotation = TRUE;
+            info->mHasRotation = true;
         }
          static LLStdStringHandle group_string = LLXmlTree::addAttributeString("group");
         if (child->getFastAttributeS32(group_string, info->mGroup))
@@ -1816,7 +1804,7 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlSkeletonNode(LLXmlTreeNode* ro
         {
             LL_WARNS() << "No id supplied for attachment point " << info->mName << LL_ENDL;
             delete info;
-            return FALSE;
+            return false;
         }
 
         static LLStdStringHandle slot_string = LLXmlTree::addAttributeString("pie_slice");
@@ -1831,13 +1819,13 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlSkeletonNode(LLXmlTreeNode* ro
         mAttachmentInfoList.push_back(info);
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // parseXmlMeshNodes(): parses <mesh> nodes from XML tree
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMeshNodes(LLXmlTreeNode* root)
+bool LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMeshNodes(LLXmlTreeNode* root)
 {
     for (LLXmlTreeNode* node = root->getChildByName( "mesh" );
          node;
@@ -1851,7 +1839,7 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMeshNodes(LLXmlTreeNode* root)
         {
             LL_WARNS() << "Avatar file: <mesh> is missing type attribute.  Ignoring element. " << LL_ENDL;
             delete info;
-            return FALSE;  // Ignore this element
+            return false;  // Ignore this element
         }
 
         static LLStdStringHandle lod_string = LLXmlTree::addAttributeString("lod");
@@ -1859,7 +1847,7 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMeshNodes(LLXmlTreeNode* root)
         {
             LL_WARNS() << "Avatar file: <mesh> is missing lod attribute.  Ignoring element. " << LL_ENDL;
             delete info;
-            return FALSE;  // Ignore this element
+            return false;  // Ignore this element
         }
 
         static LLStdStringHandle file_name_string = LLXmlTree::addAttributeString("file_name");
@@ -1867,7 +1855,7 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMeshNodes(LLXmlTreeNode* root)
         {
             LL_WARNS() << "Avatar file: <mesh> is missing file_name attribute.  Ignoring: " << info->mType << LL_ENDL;
             delete info;
-            return FALSE;  // Ignore this element
+            return false;  // Ignore this element
         }
 
         static LLStdStringHandle reference_string = LLXmlTree::addAttributeString("reference");
@@ -1902,7 +1890,7 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMeshNodes(LLXmlTreeNode* root)
                 {
                     LL_WARNS() << "Unknown param type." << LL_ENDL;
                 }
-                return FALSE;
+                return false;
             }
 
             LLPolyMorphTargetInfo *morphinfo = new LLPolyMorphTargetInfo();
@@ -1910,9 +1898,9 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMeshNodes(LLXmlTreeNode* root)
             {
                 delete morphinfo;
                 delete info;
-                return -1;
+                return false;
             }
-            BOOL shared = FALSE;
+            bool shared = false;
             static LLStdStringHandle shared_string = LLXmlTree::addAttributeString("shared");
             child->getFastAttributeBOOL(shared_string, shared);
 
@@ -1921,13 +1909,13 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMeshNodes(LLXmlTreeNode* root)
 
         mMeshInfoList.push_back(info);
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // parseXmlColorNodes(): parses <global_color> nodes from XML tree
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlColorNodes(LLXmlTreeNode* root)
+bool LLAvatarAppearance::LLAvatarXmlInfo::parseXmlColorNodes(LLXmlTreeNode* root)
 {
     for (LLXmlTreeNode* color_node = root->getChildByName( "global_color" );
          color_node;
@@ -1942,14 +1930,14 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlColorNodes(LLXmlTreeNode* root
                 if (mTexSkinColorInfo)
                 {
                     LL_WARNS() << "avatar file: multiple instances of skin_color" << LL_ENDL;
-                    return FALSE;
+                    return false;
                 }
                 mTexSkinColorInfo = new LLTexGlobalColorInfo;
                 if( !mTexSkinColorInfo->parseXml( color_node ) )
                 {
                     delete_and_clear(mTexSkinColorInfo);
                     LL_WARNS() << "avatar file: mTexSkinColor->parseXml() failed" << LL_ENDL;
-                    return FALSE;
+                    return false;
                 }
             }
             else if( global_color_name == "hair_color" )
@@ -1957,14 +1945,14 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlColorNodes(LLXmlTreeNode* root
                 if (mTexHairColorInfo)
                 {
                     LL_WARNS() << "avatar file: multiple instances of hair_color" << LL_ENDL;
-                    return FALSE;
+                    return false;
                 }
                 mTexHairColorInfo = new LLTexGlobalColorInfo;
                 if( !mTexHairColorInfo->parseXml( color_node ) )
                 {
                     delete_and_clear(mTexHairColorInfo);
                     LL_WARNS() << "avatar file: mTexHairColor->parseXml() failed" << LL_ENDL;
-                    return FALSE;
+                    return false;
                 }
             }
             else if( global_color_name == "eye_color" )
@@ -1972,24 +1960,24 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlColorNodes(LLXmlTreeNode* root
                 if (mTexEyeColorInfo)
                 {
                     LL_WARNS() << "avatar file: multiple instances of eye_color" << LL_ENDL;
-                    return FALSE;
+                    return false;
                 }
                 mTexEyeColorInfo = new LLTexGlobalColorInfo;
                 if( !mTexEyeColorInfo->parseXml( color_node ) )
                 {
                     LL_WARNS() << "avatar file: mTexEyeColor->parseXml() failed" << LL_ENDL;
-                    return FALSE;
+                    return false;
                 }
             }
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // parseXmlLayerNodes(): parses <layer_set> nodes from XML tree
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlLayerNodes(LLXmlTreeNode* root)
+bool LLAvatarAppearance::LLAvatarXmlInfo::parseXmlLayerNodes(LLXmlTreeNode* root)
 {
     for (LLXmlTreeNode* layer_node = root->getChildByName( "layer_set" );
          layer_node;
@@ -2004,16 +1992,16 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlLayerNodes(LLXmlTreeNode* root
         {
             delete layer_info;
             LL_WARNS() << "avatar file: layer_set->parseXml() failed" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // parseXmlDriverNodes(): parses <driver_parameters> nodes from XML tree
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlDriverNodes(LLXmlTreeNode* root)
+bool LLAvatarAppearance::LLAvatarXmlInfo::parseXmlDriverNodes(LLXmlTreeNode* root)
 {
     LLXmlTreeNode* driver = root->getChildByName( "driver_parameters" );
     if( driver )
@@ -2033,23 +2021,23 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlDriverNodes(LLXmlTreeNode* roo
                 {
                     delete driver_info;
                     LL_WARNS() << "avatar file: driver_param->parseXml() failed" << LL_ENDL;
-                    return FALSE;
+                    return false;
                 }
             }
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // parseXmlDriverNodes(): parses <driver_parameters> nodes from XML tree
 //-----------------------------------------------------------------------------
-BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMorphNodes(LLXmlTreeNode* root)
+bool LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMorphNodes(LLXmlTreeNode* root)
 {
     LLXmlTreeNode* masks = root->getChildByName( "morph_masks" );
     if( !masks )
     {
-        return FALSE;
+        return false;
     }
 
     for (LLXmlTreeNode* grand_child = masks->getChildByName( "mask" );
@@ -2063,7 +2051,7 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMorphNodes(LLXmlTreeNode* root
         {
             LL_WARNS() << "No name supplied for morph mask." << LL_ENDL;
             delete info;
-            return FALSE;
+            return false;
         }
 
         static LLStdStringHandle region_string = LLXmlTree::addAttributeString("body_region");
@@ -2071,7 +2059,7 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMorphNodes(LLXmlTreeNode* root
         {
             LL_WARNS() << "No region supplied for morph mask." << LL_ENDL;
             delete info;
-            return FALSE;
+            return false;
         }
 
         static LLStdStringHandle layer_string = LLXmlTree::addAttributeString("layer");
@@ -2079,7 +2067,7 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMorphNodes(LLXmlTreeNode* root
         {
             LL_WARNS() << "No layer supplied for morph mask." << LL_ENDL;
             delete info;
-            return FALSE;
+            return false;
         }
 
         // optional parameter. don't throw a warning if not present.
@@ -2089,11 +2077,11 @@ BOOL LLAvatarAppearance::LLAvatarXmlInfo::parseXmlMorphNodes(LLXmlTreeNode* root
         mMorphMaskInfoList.push_back(info);
     }
 
-    return TRUE;
+    return true;
 }
 
 //virtual
-LLAvatarAppearance::LLMaskedMorph::LLMaskedMorph(LLVisualParam *morph_target, BOOL invert, std::string layer) :
+LLAvatarAppearance::LLMaskedMorph::LLMaskedMorph(LLVisualParam *morph_target, bool invert, std::string layer) :
             mMorphTarget(morph_target),
             mInvert(invert),
             mLayer(layer)
diff --git a/indra/llappearance/llavatarappearance.h b/indra/llappearance/llavatarappearance.h
index dc2d48fb74..13e504e639 100644
--- a/indra/llappearance/llavatarappearance.h
+++ b/indra/llappearance/llavatarappearance.h
@@ -70,10 +70,10 @@ public:
     static void         initClass();
     static void         cleanupClass(); // Cleanup data that's only init'd once per class.
     virtual void        initInstance(); // Called after construction to initialize the instance.
-    S32                 mInitFlags;
-    virtual BOOL        loadSkeletonNode();
-    BOOL                loadMeshNodes();
-    BOOL                loadLayersets();
+    S32                 mInitFlags{ 0 };
+    virtual bool        loadSkeletonNode();
+    bool                loadMeshNodes();
+    bool                loadLayersets();
 
 
 /**                    Initialization
@@ -108,9 +108,9 @@ public:
  **/
 public:
     virtual bool    isSelf() const { return false; } // True if this avatar is for this viewer's agent
-    virtual BOOL    isValid() const;
-    virtual BOOL    isUsingLocalAppearance() const = 0;
-    virtual BOOL    isEditingAppearance() const = 0;
+    virtual bool    isValid() const;
+    virtual bool    isUsingLocalAppearance() const = 0;
+    virtual bool    isEditingAppearance() const = 0;
 
     bool isBuilt() const { return mIsBuilt; }
 
@@ -135,8 +135,8 @@ public:
     F32                 getPelvisToFoot() const { return mPelvisToFoot; }
     /*virtual*/ LLJoint*    getRootJoint() { return mRoot; }
 
-    LLVector3           mHeadOffset; // current head position
-    LLAvatarJoint       *mRoot;
+    LLVector3           mHeadOffset{}; // current head position
+    LLAvatarJoint*      mRoot{ nullptr };
 
     typedef std::map<std::string, LLJoint*> joint_map_t;
     joint_map_t         mJointMap;
@@ -146,7 +146,7 @@ public:
     joint_state_map_t mCurrBodySizeState;
     void compareJointStateMaps(joint_state_map_t& last_state,
                                joint_state_map_t& curr_state);
-    void computeBodySize();
+    void        computeBodySize();
 
 public:
     typedef std::vector<LLAvatarJoint*> avatar_joint_list_t;
@@ -156,16 +156,16 @@ public:
 
 
 protected:
-    static BOOL         parseSkeletonFile(const std::string& filename, LLXmlTree& skeleton_xml_tree);
+    static bool         parseSkeletonFile(const std::string& filename, LLXmlTree& skeleton_xml_tree);
     virtual void        buildCharacter();
-    virtual BOOL        loadAvatar();
+    virtual bool        loadAvatar();
 
-    BOOL                setupBone(const LLAvatarBoneInfo* info, LLJoint* parent, S32 &current_volume_num, S32 &current_joint_num);
-    BOOL                allocateCharacterJoints(U32 num);
-    BOOL                buildSkeleton(const LLAvatarSkeletonInfo *info);
+    bool                setupBone(const LLAvatarBoneInfo* info, LLJoint* parent, S32 &current_volume_num, S32 &current_joint_num);
+    bool                allocateCharacterJoints(U32 num);
+    bool                buildSkeleton(const LLAvatarSkeletonInfo *info);
 
     void                clearSkeleton();
-    BOOL                mIsBuilt; // state of deferred character building
+    bool                mIsBuilt{ false }; // state of deferred character building
     avatar_joint_list_t mSkeleton;
     LLVector3OverrideMap    mPelvisFixups;
     joint_alias_map_t   mJointAliasMap;
@@ -182,30 +182,30 @@ public:
     LLVector3           mBodySize;
     LLVector3           mAvatarOffset;
 protected:
-    F32                 mPelvisToFoot;
+    F32                 mPelvisToFoot{ 0.f };
 
     //--------------------------------------------------------------------
     // Cached pointers to well known joints
     //--------------------------------------------------------------------
 public:
-    LLJoint*        mPelvisp;
-    LLJoint*        mTorsop;
-    LLJoint*        mChestp;
-    LLJoint*        mNeckp;
-    LLJoint*        mHeadp;
-    LLJoint*        mSkullp;
-    LLJoint*        mEyeLeftp;
-    LLJoint*        mEyeRightp;
-    LLJoint*        mHipLeftp;
-    LLJoint*        mHipRightp;
-    LLJoint*        mKneeLeftp;
-    LLJoint*        mKneeRightp;
-    LLJoint*        mAnkleLeftp;
-    LLJoint*        mAnkleRightp;
-    LLJoint*        mFootLeftp;
-    LLJoint*        mFootRightp;
-    LLJoint*        mWristLeftp;
-    LLJoint*        mWristRightp;
+    LLJoint*        mPelvisp{nullptr};
+    LLJoint*        mTorsop{ nullptr };
+    LLJoint*        mChestp{ nullptr };
+    LLJoint*        mNeckp{ nullptr };
+    LLJoint*        mHeadp{ nullptr };
+    LLJoint*        mSkullp{ nullptr };
+    LLJoint*        mEyeLeftp{ nullptr };
+    LLJoint*        mEyeRightp{ nullptr };
+    LLJoint*        mHipLeftp{ nullptr };
+    LLJoint*        mHipRightp{ nullptr };
+    LLJoint*        mKneeLeftp{ nullptr };
+    LLJoint*        mKneeRightp{ nullptr };
+    LLJoint*        mAnkleLeftp{ nullptr };
+    LLJoint*        mAnkleRightp{ nullptr };
+    LLJoint*        mFootLeftp{ nullptr };
+    LLJoint*        mFootRightp{ nullptr };
+    LLJoint*        mWristLeftp{ nullptr };
+    LLJoint*        mWristRightp{ nullptr };
 
     //--------------------------------------------------------------------
     // XML parse tree
@@ -225,14 +225,14 @@ protected:
  **                    RENDERING
  **/
 public:
-    BOOL        mIsDummy; // for special views and animated object controllers; local to viewer
+    bool        mIsDummy{ false }; // for special views and animated object controllers; local to viewer
 
     //--------------------------------------------------------------------
     // Morph masks
     //--------------------------------------------------------------------
 public:
-    void    addMaskedMorph(LLAvatarAppearanceDefines::EBakedTextureIndex index, LLVisualParam* morph_target, BOOL invert, std::string layer);
-    virtual void    applyMorphMask(U8* tex_data, S32 width, S32 height, S32 num_components, LLAvatarAppearanceDefines::EBakedTextureIndex index = LLAvatarAppearanceDefines::BAKED_NUM_INDICES) = 0;
+    void    addMaskedMorph(LLAvatarAppearanceDefines::EBakedTextureIndex index, LLVisualParam* morph_target, bool invert, std::string layer);
+    virtual void    applyMorphMask(const U8* tex_data, S32 width, S32 height, S32 num_components, LLAvatarAppearanceDefines::EBakedTextureIndex index = LLAvatarAppearanceDefines::BAKED_NUM_INDICES) = 0;
 
 /**                    Rendering
  **                                                                            **
@@ -279,7 +279,7 @@ protected:
 public:
     void            setClothesColor(LLAvatarAppearanceDefines::ETextureIndex te, const LLColor4& new_color);
     LLColor4        getClothesColor(LLAvatarAppearanceDefines::ETextureIndex te);
-    static BOOL     teToColorParams(LLAvatarAppearanceDefines::ETextureIndex te, U32 *param_name);
+    static bool     teToColorParams(LLAvatarAppearanceDefines::ETextureIndex te, U32 *param_name);
 
     //--------------------------------------------------------------------
     // Global colors
@@ -288,9 +288,9 @@ public:
     LLColor4        getGlobalColor(const std::string& color_name ) const;
     virtual void    onGlobalColorChanged(const LLTexGlobalColor* global_color) = 0;
 protected:
-    LLTexGlobalColor* mTexSkinColor;
-    LLTexGlobalColor* mTexHairColor;
-    LLTexGlobalColor* mTexEyeColor;
+    LLTexGlobalColor* mTexSkinColor{ nullptr };
+    LLTexGlobalColor* mTexHairColor{ nullptr };
+    LLTexGlobalColor* mTexEyeColor{ nullptr };
 
     //--------------------------------------------------------------------
     // Visibility
@@ -309,11 +309,11 @@ public:
 public:
     LLWearableData*         getWearableData() { return mWearableData; }
     const LLWearableData*   getWearableData() const { return mWearableData; }
-    virtual BOOL isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex te, U32 index = 0 ) const = 0;
-    virtual BOOL            isWearingWearableType(LLWearableType::EType type ) const;
+    virtual bool isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex te, U32 index = 0 ) const = 0;
+    virtual bool            isWearingWearableType(LLWearableType::EType type ) const;
 
 private:
-    LLWearableData* mWearableData;
+    LLWearableData* mWearableData{ nullptr };
 
 /********************************************************************************
  **                                                                            **
@@ -331,11 +331,11 @@ protected:
     struct BakedTextureData
     {
         LLUUID                              mLastTextureID;
-        LLTexLayerSet*                      mTexLayerSet; // Only exists for self
-        bool                                mIsLoaded;
-        bool                                mIsUsed;
-        LLAvatarAppearanceDefines::ETextureIndex    mTextureIndex;
-        U32                                 mMaskTexName;
+        LLTexLayerSet*                      mTexLayerSet{ nullptr }; // Only exists for self
+        bool                                mIsLoaded{ false };
+        bool                                mIsUsed{ false };
+        LLAvatarAppearanceDefines::ETextureIndex    mTextureIndex{ LLAvatarAppearanceDefines::ETextureIndex::TEX_INVALID };
+        U32                                 mMaskTexName{ 0 };
         // Stores pointers to the joint meshes that this baked texture deals with
         avatar_joint_mesh_list_t            mJointMeshes;
         morph_list_t                        mMaskedMorphs;
@@ -352,11 +352,11 @@ protected:
     // Collision volumes
     //--------------------------------------------------------------------
 public:
-    S32         mNumBones;
-    S32         mNumCollisionVolumes;
-    LLAvatarJointCollisionVolume* mCollisionVolumes;
+    S32         mNumBones{ 0 };
+    S32         mNumCollisionVolumes{ 0 };
+    LLAvatarJointCollisionVolume* mCollisionVolumes{ nullptr };
 protected:
-    BOOL        allocateCollisionVolumes(U32 num);
+    bool        allocateCollisionVolumes(U32 num);
 
 /**                    Physics
  **                                                                            **
@@ -372,16 +372,16 @@ protected:
         LLAvatarXmlInfo();
         ~LLAvatarXmlInfo();
 
-        BOOL    parseXmlSkeletonNode(LLXmlTreeNode* root);
-        BOOL    parseXmlMeshNodes(LLXmlTreeNode* root);
-        BOOL    parseXmlColorNodes(LLXmlTreeNode* root);
-        BOOL    parseXmlLayerNodes(LLXmlTreeNode* root);
-        BOOL    parseXmlDriverNodes(LLXmlTreeNode* root);
-        BOOL    parseXmlMorphNodes(LLXmlTreeNode* root);
+        bool    parseXmlSkeletonNode(LLXmlTreeNode* root);
+        bool    parseXmlMeshNodes(LLXmlTreeNode* root);
+        bool    parseXmlColorNodes(LLXmlTreeNode* root);
+        bool    parseXmlLayerNodes(LLXmlTreeNode* root);
+        bool    parseXmlDriverNodes(LLXmlTreeNode* root);
+        bool    parseXmlMorphNodes(LLXmlTreeNode* root);
 
         struct LLAvatarMeshInfo
         {
-            typedef std::pair<LLViewerVisualParamInfo*,BOOL> morph_info_pair_t; // LLPolyMorphTargetInfo stored here
+            typedef std::pair<LLViewerVisualParamInfo*,bool> morph_info_pair_t; // LLPolyMorphTargetInfo stored here
             typedef std::vector<morph_info_pair_t> morph_info_list_t;
 
             LLAvatarMeshInfo() : mLOD(0), mMinPixelArea(.1f) {}
@@ -410,8 +410,8 @@ protected:
         struct LLAvatarAttachmentInfo
         {
             LLAvatarAttachmentInfo()
-                : mGroup(-1), mAttachmentID(-1), mPieMenuSlice(-1), mVisibleFirstPerson(FALSE),
-                  mIsHUDAttachment(FALSE), mHasPosition(FALSE), mHasRotation(FALSE) {}
+                : mGroup(-1), mAttachmentID(-1), mPieMenuSlice(-1), mVisibleFirstPerson(false),
+                  mIsHUDAttachment(false), mHasPosition(false), mHasRotation(false) {}
             std::string mName;
             std::string mJointName;
             LLVector3 mPosition;
@@ -419,10 +419,10 @@ protected:
             S32 mGroup;
             S32 mAttachmentID;
             S32 mPieMenuSlice;
-            BOOL mVisibleFirstPerson;
-            BOOL mIsHUDAttachment;
-            BOOL mHasPosition;
-            BOOL mHasRotation;
+            bool mVisibleFirstPerson;
+            bool mIsHUDAttachment;
+            bool mHasPosition;
+            bool mHasRotation;
         };
         typedef std::vector<LLAvatarAttachmentInfo*> attachment_info_list_t;
         attachment_info_list_t mAttachmentInfoList;
@@ -440,11 +440,11 @@ protected:
         struct LLAvatarMorphInfo
         {
             LLAvatarMorphInfo()
-                : mInvert(FALSE) {}
+                : mInvert(false) {}
             std::string mName;
             std::string mRegion;
             std::string mLayer;
-            BOOL mInvert;
+            bool mInvert;
         };
 
         typedef std::vector<LLAvatarMorphInfo*> morph_info_list_t;
@@ -455,10 +455,10 @@ protected:
     class LLMaskedMorph
     {
     public:
-        LLMaskedMorph(LLVisualParam *morph_target, BOOL invert, std::string layer);
+        LLMaskedMorph(LLVisualParam *morph_target, bool invert, std::string layer);
 
         LLVisualParam   *mMorphTarget;
-        BOOL                mInvert;
+        bool                mInvert;
         std::string         mLayer;
     };
 /**                    Support Classes
diff --git a/indra/llappearance/llavatarappearancedefines.cpp b/indra/llappearance/llavatarappearancedefines.cpp
index 0e51fd459e..c69517cb22 100644
--- a/indra/llappearance/llavatarappearancedefines.cpp
+++ b/indra/llappearance/llavatarappearancedefines.cpp
@@ -39,56 +39,56 @@ using namespace LLAvatarAppearanceDefines;
 
 LLAvatarAppearanceDictionary::Textures::Textures()
 {
-    addEntry(TEX_HEAD_BODYPAINT,              new TextureEntry("head_bodypaint",   TRUE,  BAKED_NUM_INDICES, "",                          LLWearableType::WT_SKIN));
-    addEntry(TEX_UPPER_SHIRT,                 new TextureEntry("upper_shirt",      TRUE,  BAKED_NUM_INDICES, "UIImgDefaultShirtUUID",     LLWearableType::WT_SHIRT));
-    addEntry(TEX_LOWER_PANTS,                 new TextureEntry("lower_pants",      TRUE,  BAKED_NUM_INDICES, "UIImgDefaultPantsUUID",     LLWearableType::WT_PANTS));
-    addEntry(TEX_EYES_IRIS,                   new TextureEntry("eyes_iris",        TRUE,  BAKED_NUM_INDICES, "UIImgDefaultEyesUUID",      LLWearableType::WT_EYES));
-    addEntry(TEX_HAIR,                        new TextureEntry("hair_grain",       TRUE,  BAKED_NUM_INDICES, "UIImgDefaultHairUUID",      LLWearableType::WT_HAIR));
-    addEntry(TEX_UPPER_BODYPAINT,             new TextureEntry("upper_bodypaint",  TRUE,  BAKED_NUM_INDICES, "",                          LLWearableType::WT_SKIN));
-    addEntry(TEX_LOWER_BODYPAINT,             new TextureEntry("lower_bodypaint",  TRUE,  BAKED_NUM_INDICES, "",                          LLWearableType::WT_SKIN));
-    addEntry(TEX_LOWER_SHOES,                 new TextureEntry("lower_shoes",      TRUE,  BAKED_NUM_INDICES, "UIImgDefaultShoesUUID",     LLWearableType::WT_SHOES));
-    addEntry(TEX_LOWER_SOCKS,                 new TextureEntry("lower_socks",      TRUE,  BAKED_NUM_INDICES, "UIImgDefaultSocksUUID",     LLWearableType::WT_SOCKS));
-    addEntry(TEX_UPPER_JACKET,                new TextureEntry("upper_jacket",     TRUE,  BAKED_NUM_INDICES, "UIImgDefaultJacketUUID",    LLWearableType::WT_JACKET));
-    addEntry(TEX_LOWER_JACKET,                new TextureEntry("lower_jacket",     TRUE,  BAKED_NUM_INDICES, "UIImgDefaultJacketUUID",    LLWearableType::WT_JACKET));
-    addEntry(TEX_UPPER_GLOVES,                new TextureEntry("upper_gloves",     TRUE,  BAKED_NUM_INDICES, "UIImgDefaultGlovesUUID",    LLWearableType::WT_GLOVES));
-    addEntry(TEX_UPPER_UNDERSHIRT,            new TextureEntry("upper_undershirt", TRUE,  BAKED_NUM_INDICES, "UIImgDefaultUnderwearUUID", LLWearableType::WT_UNDERSHIRT));
-    addEntry(TEX_LOWER_UNDERPANTS,            new TextureEntry("lower_underpants", TRUE,  BAKED_NUM_INDICES, "UIImgDefaultUnderwearUUID", LLWearableType::WT_UNDERPANTS));
-    addEntry(TEX_SKIRT,                       new TextureEntry("skirt",            TRUE,  BAKED_NUM_INDICES, "UIImgDefaultSkirtUUID",     LLWearableType::WT_SKIRT));
-
-    addEntry(TEX_LOWER_ALPHA,                 new TextureEntry("lower_alpha",      TRUE,  BAKED_NUM_INDICES, "UIImgDefaultAlphaUUID",     LLWearableType::WT_ALPHA));
-    addEntry(TEX_UPPER_ALPHA,                 new TextureEntry("upper_alpha",      TRUE,  BAKED_NUM_INDICES, "UIImgDefaultAlphaUUID",     LLWearableType::WT_ALPHA));
-    addEntry(TEX_HEAD_ALPHA,                  new TextureEntry("head_alpha",       TRUE,  BAKED_NUM_INDICES, "UIImgDefaultAlphaUUID",     LLWearableType::WT_ALPHA));
-    addEntry(TEX_EYES_ALPHA,                  new TextureEntry("eyes_alpha",       TRUE,  BAKED_NUM_INDICES, "UIImgDefaultAlphaUUID",     LLWearableType::WT_ALPHA));
-    addEntry(TEX_HAIR_ALPHA,                  new TextureEntry("hair_alpha",       TRUE,  BAKED_NUM_INDICES, "UIImgDefaultAlphaUUID",     LLWearableType::WT_ALPHA));
-
-    addEntry(TEX_HEAD_TATTOO,                 new TextureEntry("head_tattoo",      TRUE,  BAKED_NUM_INDICES, "",     LLWearableType::WT_TATTOO));
-    addEntry(TEX_UPPER_TATTOO,                new TextureEntry("upper_tattoo",     TRUE,  BAKED_NUM_INDICES, "",     LLWearableType::WT_TATTOO));
-    addEntry(TEX_LOWER_TATTOO,                new TextureEntry("lower_tattoo",     TRUE,  BAKED_NUM_INDICES, "",     LLWearableType::WT_TATTOO));
-
-    addEntry(TEX_HEAD_UNIVERSAL_TATTOO,       new TextureEntry("head_universal_tattoo", TRUE, BAKED_NUM_INDICES, "", LLWearableType::WT_UNIVERSAL));
-    addEntry(TEX_UPPER_UNIVERSAL_TATTOO,      new TextureEntry("upper_universal_tattoo", TRUE, BAKED_NUM_INDICES, "", LLWearableType::WT_UNIVERSAL));
-    addEntry(TEX_LOWER_UNIVERSAL_TATTOO,      new TextureEntry("lower_universal_tattoo", TRUE, BAKED_NUM_INDICES, "", LLWearableType::WT_UNIVERSAL));
-    addEntry(TEX_SKIRT_TATTOO,                new TextureEntry("skirt_tattoo",     TRUE,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
-    addEntry(TEX_HAIR_TATTOO,                 new TextureEntry("hair_tattoo",      TRUE,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
-    addEntry(TEX_EYES_TATTOO,                 new TextureEntry("eyes_tattoo",      TRUE,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
-    addEntry(TEX_LEFT_ARM_TATTOO,             new TextureEntry("leftarm_tattoo",   TRUE,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
-    addEntry(TEX_LEFT_LEG_TATTOO,             new TextureEntry("leftleg_tattoo",   TRUE,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
-    addEntry(TEX_AUX1_TATTOO,                 new TextureEntry("aux1_tattoo",      TRUE,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
-    addEntry(TEX_AUX2_TATTOO,                 new TextureEntry("aux2_tattoo",      TRUE,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
-    addEntry(TEX_AUX3_TATTOO,                 new TextureEntry("aux3_tattoo",      TRUE,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
-
-
-    addEntry(TEX_HEAD_BAKED,                  new TextureEntry("head-baked",       FALSE, BAKED_HEAD, "head"));
-    addEntry(TEX_UPPER_BAKED,                 new TextureEntry("upper-baked",      FALSE, BAKED_UPPER, "upper"));
-    addEntry(TEX_LOWER_BAKED,                 new TextureEntry("lower-baked",      FALSE, BAKED_LOWER, "lower"));
-    addEntry(TEX_EYES_BAKED,                  new TextureEntry("eyes-baked",       FALSE, BAKED_EYES, "eyes"));
-    addEntry(TEX_HAIR_BAKED,                  new TextureEntry("hair-baked",       FALSE, BAKED_HAIR, "hair"));
-    addEntry(TEX_SKIRT_BAKED,                 new TextureEntry("skirt-baked",      FALSE, BAKED_SKIRT, "skirt"));
-    addEntry(TEX_LEFT_ARM_BAKED,              new TextureEntry("leftarm-baked",   FALSE, BAKED_LEFT_ARM, "leftarm"));
-    addEntry(TEX_LEFT_LEG_BAKED,              new TextureEntry("leftleg-baked",  FALSE, BAKED_LEFT_LEG, "leftleg"));
-    addEntry(TEX_AUX1_BAKED,                  new TextureEntry("aux1-baked",       FALSE, BAKED_AUX1, "aux1"));
-    addEntry(TEX_AUX2_BAKED,                  new TextureEntry("aux2-baked",       FALSE, BAKED_AUX2, "aux2"));
-    addEntry(TEX_AUX3_BAKED,                  new TextureEntry("aux3-baked",       FALSE, BAKED_AUX3, "aux3"));
+    addEntry(TEX_HEAD_BODYPAINT,              new TextureEntry("head_bodypaint",   true,  BAKED_NUM_INDICES, "",                          LLWearableType::WT_SKIN));
+    addEntry(TEX_UPPER_SHIRT,                 new TextureEntry("upper_shirt",      true,  BAKED_NUM_INDICES, "UIImgDefaultShirtUUID",     LLWearableType::WT_SHIRT));
+    addEntry(TEX_LOWER_PANTS,                 new TextureEntry("lower_pants",      true,  BAKED_NUM_INDICES, "UIImgDefaultPantsUUID",     LLWearableType::WT_PANTS));
+    addEntry(TEX_EYES_IRIS,                   new TextureEntry("eyes_iris",        true,  BAKED_NUM_INDICES, "UIImgDefaultEyesUUID",      LLWearableType::WT_EYES));
+    addEntry(TEX_HAIR,                        new TextureEntry("hair_grain",       true,  BAKED_NUM_INDICES, "UIImgDefaultHairUUID",      LLWearableType::WT_HAIR));
+    addEntry(TEX_UPPER_BODYPAINT,             new TextureEntry("upper_bodypaint",  true,  BAKED_NUM_INDICES, "",                          LLWearableType::WT_SKIN));
+    addEntry(TEX_LOWER_BODYPAINT,             new TextureEntry("lower_bodypaint",  true,  BAKED_NUM_INDICES, "",                          LLWearableType::WT_SKIN));
+    addEntry(TEX_LOWER_SHOES,                 new TextureEntry("lower_shoes",      true,  BAKED_NUM_INDICES, "UIImgDefaultShoesUUID",     LLWearableType::WT_SHOES));
+    addEntry(TEX_LOWER_SOCKS,                 new TextureEntry("lower_socks",      true,  BAKED_NUM_INDICES, "UIImgDefaultSocksUUID",     LLWearableType::WT_SOCKS));
+    addEntry(TEX_UPPER_JACKET,                new TextureEntry("upper_jacket",     true,  BAKED_NUM_INDICES, "UIImgDefaultJacketUUID",    LLWearableType::WT_JACKET));
+    addEntry(TEX_LOWER_JACKET,                new TextureEntry("lower_jacket",     true,  BAKED_NUM_INDICES, "UIImgDefaultJacketUUID",    LLWearableType::WT_JACKET));
+    addEntry(TEX_UPPER_GLOVES,                new TextureEntry("upper_gloves",     true,  BAKED_NUM_INDICES, "UIImgDefaultGlovesUUID",    LLWearableType::WT_GLOVES));
+    addEntry(TEX_UPPER_UNDERSHIRT,            new TextureEntry("upper_undershirt", true,  BAKED_NUM_INDICES, "UIImgDefaultUnderwearUUID", LLWearableType::WT_UNDERSHIRT));
+    addEntry(TEX_LOWER_UNDERPANTS,            new TextureEntry("lower_underpants", true,  BAKED_NUM_INDICES, "UIImgDefaultUnderwearUUID", LLWearableType::WT_UNDERPANTS));
+    addEntry(TEX_SKIRT,                       new TextureEntry("skirt",            true,  BAKED_NUM_INDICES, "UIImgDefaultSkirtUUID",     LLWearableType::WT_SKIRT));
+
+    addEntry(TEX_LOWER_ALPHA,                 new TextureEntry("lower_alpha",      true,  BAKED_NUM_INDICES, "UIImgDefaultAlphaUUID",     LLWearableType::WT_ALPHA));
+    addEntry(TEX_UPPER_ALPHA,                 new TextureEntry("upper_alpha",      true,  BAKED_NUM_INDICES, "UIImgDefaultAlphaUUID",     LLWearableType::WT_ALPHA));
+    addEntry(TEX_HEAD_ALPHA,                  new TextureEntry("head_alpha",       true,  BAKED_NUM_INDICES, "UIImgDefaultAlphaUUID",     LLWearableType::WT_ALPHA));
+    addEntry(TEX_EYES_ALPHA,                  new TextureEntry("eyes_alpha",       true,  BAKED_NUM_INDICES, "UIImgDefaultAlphaUUID",     LLWearableType::WT_ALPHA));
+    addEntry(TEX_HAIR_ALPHA,                  new TextureEntry("hair_alpha",       true,  BAKED_NUM_INDICES, "UIImgDefaultAlphaUUID",     LLWearableType::WT_ALPHA));
+
+    addEntry(TEX_HEAD_TATTOO,                 new TextureEntry("head_tattoo",      true,  BAKED_NUM_INDICES, "",     LLWearableType::WT_TATTOO));
+    addEntry(TEX_UPPER_TATTOO,                new TextureEntry("upper_tattoo",     true,  BAKED_NUM_INDICES, "",     LLWearableType::WT_TATTOO));
+    addEntry(TEX_LOWER_TATTOO,                new TextureEntry("lower_tattoo",     true,  BAKED_NUM_INDICES, "",     LLWearableType::WT_TATTOO));
+
+    addEntry(TEX_HEAD_UNIVERSAL_TATTOO,       new TextureEntry("head_universal_tattoo", true, BAKED_NUM_INDICES, "", LLWearableType::WT_UNIVERSAL));
+    addEntry(TEX_UPPER_UNIVERSAL_TATTOO,      new TextureEntry("upper_universal_tattoo", true, BAKED_NUM_INDICES, "", LLWearableType::WT_UNIVERSAL));
+    addEntry(TEX_LOWER_UNIVERSAL_TATTOO,      new TextureEntry("lower_universal_tattoo", true, BAKED_NUM_INDICES, "", LLWearableType::WT_UNIVERSAL));
+    addEntry(TEX_SKIRT_TATTOO,                new TextureEntry("skirt_tattoo",     true,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
+    addEntry(TEX_HAIR_TATTOO,                 new TextureEntry("hair_tattoo",      true,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
+    addEntry(TEX_EYES_TATTOO,                 new TextureEntry("eyes_tattoo",      true,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
+    addEntry(TEX_LEFT_ARM_TATTOO,             new TextureEntry("leftarm_tattoo",   true,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
+    addEntry(TEX_LEFT_LEG_TATTOO,             new TextureEntry("leftleg_tattoo",   true,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
+    addEntry(TEX_AUX1_TATTOO,                 new TextureEntry("aux1_tattoo",      true,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
+    addEntry(TEX_AUX2_TATTOO,                 new TextureEntry("aux2_tattoo",      true,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
+    addEntry(TEX_AUX3_TATTOO,                 new TextureEntry("aux3_tattoo",      true,  BAKED_NUM_INDICES, "",     LLWearableType::WT_UNIVERSAL));
+
+
+    addEntry(TEX_HEAD_BAKED,                  new TextureEntry("head-baked",       false, BAKED_HEAD, "head"));
+    addEntry(TEX_UPPER_BAKED,                 new TextureEntry("upper-baked",      false, BAKED_UPPER, "upper"));
+    addEntry(TEX_LOWER_BAKED,                 new TextureEntry("lower-baked",      false, BAKED_LOWER, "lower"));
+    addEntry(TEX_EYES_BAKED,                  new TextureEntry("eyes-baked",       false, BAKED_EYES, "eyes"));
+    addEntry(TEX_HAIR_BAKED,                  new TextureEntry("hair-baked",       false, BAKED_HAIR, "hair"));
+    addEntry(TEX_SKIRT_BAKED,                 new TextureEntry("skirt-baked",      false, BAKED_SKIRT, "skirt"));
+    addEntry(TEX_LEFT_ARM_BAKED,              new TextureEntry("leftarm-baked",   false, BAKED_LEFT_ARM, "leftarm"));
+    addEntry(TEX_LEFT_LEG_BAKED,              new TextureEntry("leftleg-baked",  false, BAKED_LEFT_LEG, "leftleg"));
+    addEntry(TEX_AUX1_BAKED,                  new TextureEntry("aux1-baked",       false, BAKED_AUX1, "aux1"));
+    addEntry(TEX_AUX2_BAKED,                  new TextureEntry("aux2-baked",       false, BAKED_AUX2, "aux2"));
+    addEntry(TEX_AUX3_BAKED,                  new TextureEntry("aux3-baked",       false, BAKED_AUX3, "aux3"));
 }
 
 LLAvatarAppearanceDictionary::BakedTextures::BakedTextures()
@@ -303,15 +303,15 @@ LLWearableType::EType LLAvatarAppearanceDictionary::getTEWearableType(ETextureIn
 }
 
 // static
-BOOL LLAvatarAppearanceDictionary::isBakedImageId(const LLUUID& id)
+bool LLAvatarAppearanceDictionary::isBakedImageId(const LLUUID& id)
 {
     if ((id == IMG_USE_BAKED_EYES) || (id == IMG_USE_BAKED_HAIR) || (id == IMG_USE_BAKED_HEAD) || (id == IMG_USE_BAKED_LOWER) || (id == IMG_USE_BAKED_SKIRT) || (id == IMG_USE_BAKED_UPPER)
         || (id == IMG_USE_BAKED_LEFTARM) || (id == IMG_USE_BAKED_LEFTLEG) || (id == IMG_USE_BAKED_AUX1) || (id == IMG_USE_BAKED_AUX2) || (id == IMG_USE_BAKED_AUX3) )
     {
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 // static
diff --git a/indra/llappearance/llavatarappearancedefines.h b/indra/llappearance/llavatarappearancedefines.h
index 414bf8bbc1..50a72a45a5 100644
--- a/indra/llappearance/llavatarappearancedefines.h
+++ b/indra/llappearance/llavatarappearancedefines.h
@@ -40,7 +40,7 @@ namespace LLAvatarAppearanceDefines
 extern const S32 SCRATCH_TEX_WIDTH;
 extern const S32 SCRATCH_TEX_HEIGHT;
 
-static const U32 AVATAR_HOVER = 11001;
+static constexpr U32 AVATAR_HOVER = 11001;
 
 //--------------------------------------------------------------------
 // Enums
@@ -167,10 +167,10 @@ public:
         const std::string   mDefaultImageName;
         const LLWearableType::EType mWearableType;
         // It's either a local texture xor baked
-        BOOL                mIsLocalTexture;
-        BOOL                mIsBakedTexture;
+        bool                mIsLocalTexture;
+        bool                mIsBakedTexture;
         // If it's a local texture, it may be used by a baked texture
-        BOOL                mIsUsedByBakedTexture;
+        bool                mIsUsedByBakedTexture;
         EBakedTextureIndex  mBakedTextureIndex;
     };
 
@@ -244,7 +244,7 @@ public:
     // Given a texture entry, determine which wearable type owns it.
     LLWearableType::EType       getTEWearableType(ETextureIndex index) const;
 
-    static BOOL                         isBakedImageId(const LLUUID& id);
+    static bool                         isBakedImageId(const LLUUID& id);
     static EBakedTextureIndex           assetIdToBakedTextureIndex(const LLUUID& id);
     static LLUUID                       localTextureIndexToMagicId(ETextureIndex t);
 
diff --git a/indra/llappearance/llavatarjoint.cpp b/indra/llappearance/llavatarjoint.cpp
index 5dae4c86cb..2aa6cb63e1 100644
--- a/indra/llappearance/llavatarjoint.cpp
+++ b/indra/llappearance/llavatarjoint.cpp
@@ -40,7 +40,7 @@ const F32 DEFAULT_AVATAR_JOINT_LOD = 0.0f;
 //-----------------------------------------------------------------------------
 // Static Data
 //-----------------------------------------------------------------------------
-BOOL                    LLAvatarJoint::sDisableLOD = FALSE;
+bool                    LLAvatarJoint::sDisableLOD = false;
 
 //-----------------------------------------------------------------------------
 // LLAvatarJoint()
@@ -66,13 +66,13 @@ LLAvatarJoint::LLAvatarJoint(const std::string &name, LLJoint *parent) :
 
 void LLAvatarJoint::init()
 {
-    mValid = FALSE;
+    mValid = false;
     mComponents = SC_JOINT | SC_BONE | SC_AXES;
     mMinPixelArea = DEFAULT_AVATAR_JOINT_LOD;
     mPickName = PN_DEFAULT;
-    mVisible = TRUE;
+    mVisible = true;
     mMeshID = 0;
-    mIsTransparent = FALSE;
+    mIsTransparent = false;
 }
 
 
@@ -88,7 +88,7 @@ LLAvatarJoint::~LLAvatarJoint()
 //--------------------------------------------------------------------
 // setValid()
 //--------------------------------------------------------------------
-void LLAvatarJoint::setValid( BOOL valid, BOOL recursive )
+void LLAvatarJoint::setValid( bool valid, bool recursive )
 {
     //----------------------------------------------------------------
     // set visibility for this joint
@@ -103,7 +103,7 @@ void LLAvatarJoint::setValid( BOOL valid, BOOL recursive )
         for (LLJoint* child : mChildren)
         {
             LLAvatarJoint* joint = static_cast<LLAvatarJoint*>(child);
-            joint->setValid(valid, TRUE);
+            joint->setValid(valid, true);
         }
     }
 
@@ -112,7 +112,7 @@ void LLAvatarJoint::setValid( BOOL valid, BOOL recursive )
 //--------------------------------------------------------------------
 // setSkeletonComponents()
 //--------------------------------------------------------------------
-void LLAvatarJoint::setSkeletonComponents( U32 comp, BOOL recursive )
+void LLAvatarJoint::setSkeletonComponents( U32 comp, bool recursive )
 {
     mComponents = comp;
     if (recursive)
@@ -125,7 +125,7 @@ void LLAvatarJoint::setSkeletonComponents( U32 comp, BOOL recursive )
     }
 }
 
-void LLAvatarJoint::setVisible(BOOL visible, BOOL recursive)
+void LLAvatarJoint::setVisible(bool visible, bool recursive)
 {
     mVisible = visible;
 
@@ -148,7 +148,7 @@ void LLAvatarJoint::updateFaceSizes(U32 &num_vertices, U32& num_indices, F32 pix
     }
 }
 
-void LLAvatarJoint::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind, bool terse_update)
+void LLAvatarJoint::updateFaceData(LLFace *face, F32 pixel_area, bool damp_wind, bool terse_update)
 {
     for (LLJoint* child : mChildren)
     {
@@ -167,10 +167,10 @@ void LLAvatarJoint::updateJointGeometry()
 }
 
 
-BOOL LLAvatarJoint::updateLOD(F32 pixel_area, BOOL activate)
+bool LLAvatarJoint::updateLOD(F32 pixel_area, bool activate)
 {
-    BOOL lod_changed = FALSE;
-    BOOL found_lod = FALSE;
+    bool lod_changed = false;
+    bool found_lod = false;
 
     for (LLJoint* child : mChildren)
     {
@@ -180,18 +180,18 @@ BOOL LLAvatarJoint::updateLOD(F32 pixel_area, BOOL activate)
         if (found_lod || jointLOD == DEFAULT_AVATAR_JOINT_LOD)
         {
             // we've already found a joint to enable, so enable the rest as alternatives
-            lod_changed |= joint->updateLOD(pixel_area, TRUE);
+            lod_changed |= joint->updateLOD(pixel_area, true);
         }
         else
         {
             if (pixel_area >= jointLOD || sDisableLOD)
             {
-                lod_changed |= joint->updateLOD(pixel_area, TRUE);
-                found_lod = TRUE;
+                lod_changed |= joint->updateLOD(pixel_area, true);
+                found_lod = true;
             }
             else
             {
-                lod_changed |= joint->updateLOD(pixel_area, FALSE);
+                lod_changed |= joint->updateLOD(pixel_area, false);
             }
         }
     }
@@ -222,11 +222,11 @@ void LLAvatarJoint::setMeshesToChildren()
 
 LLAvatarJointCollisionVolume::LLAvatarJointCollisionVolume()
 {
-    mUpdateXform = FALSE;
+    mUpdateXform = false;
 }
 
 /*virtual*/
-U32 LLAvatarJointCollisionVolume::render( F32 pixelArea, BOOL first_pass, BOOL is_dummy )
+U32 LLAvatarJointCollisionVolume::render( F32 pixelArea, bool first_pass, bool is_dummy )
 {
     LL_ERRS() << "Cannot call render() on LLAvatarJointCollisionVolume" << LL_ENDL;
     return 0;
@@ -234,7 +234,7 @@ U32 LLAvatarJointCollisionVolume::render( F32 pixelArea, BOOL first_pass, BOOL i
 
 LLVector3 LLAvatarJointCollisionVolume::getVolumePos(LLVector3 &offset)
 {
-    mUpdateXform = TRUE;
+    mUpdateXform = true;
 
     LLVector3 result = offset;
     result.scaleVec(getScale());
diff --git a/indra/llappearance/llavatarjoint.h b/indra/llappearance/llavatarjoint.h
index bc7c932955..13f025fd5f 100644
--- a/indra/llappearance/llavatarjoint.h
+++ b/indra/llappearance/llavatarjoint.h
@@ -52,17 +52,17 @@ public:
     virtual ~LLAvatarJoint();
 
     // Gets the validity of this joint
-    BOOL getValid() { return mValid; }
+    bool getValid() { return mValid; }
 
     // Sets the validity of this joint
-    virtual void setValid( BOOL valid, BOOL recursive=FALSE );
+    virtual void setValid( bool valid, bool recursive=false );
 
     // Returns true if this object is transparent.
     // This is used to determine in which order to draw objects.
-    virtual BOOL isTransparent() { return mIsTransparent; }
+    virtual bool isTransparent() { return mIsTransparent; }
 
     // Returns true if this object should inherit scale modifiers from its immediate parent
-    virtual BOOL inheritScale() { return FALSE; }
+    virtual bool inheritScale() { return false; }
 
     enum Components
     {
@@ -72,7 +72,7 @@ public:
     };
 
     // Selects which skeleton components to draw
-    void setSkeletonComponents( U32 comp, BOOL recursive = TRUE );
+    void setSkeletonComponents( U32 comp, bool recursive = true );
 
     // Returns which skeleton components are enables for drawing
     U32 getSkeletonComponents() { return mComponents; }
@@ -90,34 +90,34 @@ public:
     void setPickName(LLJointPickName name) { mPickName = name; }
     LLJointPickName getPickName() { return mPickName; }
 
-    void setVisible( BOOL visible, BOOL recursive );
+    void setVisible( bool visible, bool recursive );
 
     // Takes meshes in mMeshParts and sets each one as a child joint
     void setMeshesToChildren();
 
     // LLViewerJoint interface
-    virtual U32 render( F32 pixelArea, BOOL first_pass = TRUE, BOOL is_dummy = FALSE ) = 0;
+    virtual U32 render( F32 pixelArea, bool first_pass = true, bool is_dummy = false ) = 0;
     virtual void updateFaceSizes(U32 &num_vertices, U32& num_indices, F32 pixel_area);
-    virtual void updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind = FALSE, bool terse_update = false);
-    virtual BOOL updateLOD(F32 pixel_area, BOOL activate);
+    virtual void updateFaceData(LLFace *face, F32 pixel_area, bool damp_wind = false, bool terse_update = false);
+    virtual bool updateLOD(F32 pixel_area, bool activate);
     virtual void updateJointGeometry();
     virtual void dump();
 
 
 public:
-    static BOOL sDisableLOD;
+    static bool sDisableLOD;
     avatar_joint_mesh_list_t mMeshParts; //LLViewerJointMesh*
     void setMeshID( S32 id ) {mMeshID = id;}
 
 protected:
     void init();
 
-    BOOL        mValid;
-    BOOL        mIsTransparent;
+    bool        mValid;
+    bool        mIsTransparent;
     U32         mComponents;
     F32         mMinPixelArea;
     LLJointPickName mPickName;
-    BOOL        mVisible;
+    bool        mVisible;
     S32         mMeshID;
 };
 
@@ -127,8 +127,8 @@ public:
     LLAvatarJointCollisionVolume();
     virtual ~LLAvatarJointCollisionVolume() {};
 
-    /*virtual*/ BOOL inheritScale() { return TRUE; }
-    /*virtual*/ U32 render( F32 pixelArea, BOOL first_pass = TRUE, BOOL is_dummy = FALSE );
+    /*virtual*/ bool inheritScale() { return true; }
+    /*virtual*/ U32 render( F32 pixelArea, bool first_pass = true, bool is_dummy = false );
 
     void renderCollision();
 
diff --git a/indra/llappearance/llavatarjointmesh.cpp b/indra/llappearance/llavatarjointmesh.cpp
index aeac33b601..69a9023994 100644
--- a/indra/llappearance/llavatarjointmesh.cpp
+++ b/indra/llappearance/llavatarjointmesh.cpp
@@ -102,7 +102,7 @@ LLSkinJoint::~LLSkinJoint()
 //-----------------------------------------------------------------------------
 // LLSkinJoint::setupSkinJoint()
 //-----------------------------------------------------------------------------
-BOOL LLSkinJoint::setupSkinJoint( LLAvatarJoint *joint)
+bool LLSkinJoint::setupSkinJoint( LLAvatarJoint *joint)
 {
     // find the named joint
     mJoint = joint;
@@ -119,7 +119,7 @@ BOOL LLSkinJoint::setupSkinJoint( LLAvatarJoint *joint)
     mRootToParentJointSkinOffset = totalSkinOffset(getBaseSkeletonAncestor(joint));
     mRootToParentJointSkinOffset = -mRootToParentJointSkinOffset;
 
-    return TRUE;
+    return true;
 }
 
 
@@ -129,7 +129,7 @@ BOOL LLSkinJoint::setupSkinJoint( LLAvatarJoint *joint)
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 
-BOOL LLAvatarJointMesh::sPipelineRender = FALSE;
+bool LLAvatarJointMesh::sPipelineRender = false;
 U32 LLAvatarJointMesh::sClothingMaskImageName = 0;
 LLColor4 LLAvatarJointMesh::sClothingInnerColor;
 
@@ -149,7 +149,7 @@ LLAvatarJointMesh::LLAvatarJointMesh()
     mColor[2] = 1.0f;
     mColor[3] = 1.0f;
     mShiny = 0.0f;
-    mCullBackFaces = TRUE;
+    mCullBackFaces = true;
 
     mMesh = NULL;
 
@@ -159,11 +159,11 @@ LLAvatarJointMesh::LLAvatarJointMesh()
     mFace = NULL;
 
     mMeshID = 0;
-    mUpdateXform = FALSE;
+    mUpdateXform = false;
 
-    mValid = FALSE;
+    mValid = false;
 
-    mIsTransparent = FALSE;
+    mIsTransparent = false;
 }
 
 
@@ -182,11 +182,11 @@ LLAvatarJointMesh::~LLAvatarJointMesh()
 //-----------------------------------------------------------------------------
 // LLAvatarJointMesh::allocateSkinData()
 //-----------------------------------------------------------------------------
-BOOL LLAvatarJointMesh::allocateSkinData( U32 numSkinJoints )
+bool LLAvatarJointMesh::allocateSkinData( U32 numSkinJoints )
 {
     mSkinJoints = new LLSkinJoint[ numSkinJoints ];
     mNumSkinJoints = numSkinJoints;
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -247,12 +247,12 @@ void LLAvatarJointMesh::setTexture( LLGLTexture *texture )
     {
         mLayerSet = NULL;
         //texture->bindTexture(0);
-        //texture->setClamp(TRUE, TRUE);
+        //texture->setClamp(true, true);
     }
 }
 
 
-BOOL LLAvatarJointMesh::hasGLTexture() const
+bool LLAvatarJointMesh::hasGLTexture() const
 {
     return mTexture.notNull() && mTexture->hasGLTexture();
 }
@@ -272,7 +272,7 @@ void LLAvatarJointMesh::setLayerSet( LLTexLayerSet* layer_set )
     }
 }
 
-BOOL LLAvatarJointMesh::hasComposite() const
+bool LLAvatarJointMesh::hasComposite() const
 {
     return (mLayerSet && mLayerSet->hasComposite());
 }
diff --git a/indra/llappearance/llavatarjointmesh.h b/indra/llappearance/llavatarjointmesh.h
index 80db7f6f15..33f50fce00 100644
--- a/indra/llappearance/llavatarjointmesh.h
+++ b/indra/llappearance/llavatarjointmesh.h
@@ -49,7 +49,7 @@ class LLSkinJoint
 public:
     LLSkinJoint();
     ~LLSkinJoint();
-    BOOL setupSkinJoint( LLAvatarJoint *joint);
+    bool setupSkinJoint( LLAvatarJoint *joint);
 
     LLAvatarJoint   *mJoint;
     LLVector3       mRootToJointSkinOffset;
@@ -69,7 +69,7 @@ protected:
     LLTexLayerSet*              mLayerSet;      // ptr to a layer set owned by the avatar
     U32                         mTestImageName;     // handle to a temporary texture for previewing uploads
     LLPolyMesh*                 mMesh;          // ptr to a global polymesh
-    BOOL                        mCullBackFaces; // true by default
+    bool                        mCullBackFaces; // true by default
     LLFace*                     mFace;          // ptr to a face w/ AGP copy of mesh
 
     U32                         mFaceIndexCount;
@@ -79,7 +79,7 @@ protected:
     S32                         mMeshID;
 
 public:
-    static BOOL                 sPipelineRender;
+    static bool                 sPipelineRender;
     //RN: this is here for testing purposes
     static U32                  sClothingMaskImageName;
     static LLColor4             sClothingInnerColor;
@@ -104,14 +104,14 @@ public:
     // Sets the shape texture
     void setTexture( LLGLTexture *texture );
 
-    BOOL hasGLTexture() const;
+    bool hasGLTexture() const;
 
     void setTestTexture( U32 name ) { mTestImageName = name; }
 
     // Sets layer set responsible for a dynamic shape texture (takes precedence over normal texture)
     void setLayerSet( LLTexLayerSet* layer_set );
 
-    BOOL hasComposite() const;
+    bool hasComposite() const;
 
     // Gets the poly mesh
     LLPolyMesh *getMesh();
@@ -122,20 +122,17 @@ public:
     // Sets up joint matrix data for rendering
     void setupJoint(LLAvatarJoint* current_joint);
 
-    // Render time method to upload batches of joint matrices
-    void uploadJointMatrices();
-
     // Sets ID for picking
     void setMeshID( S32 id ) {mMeshID = id;}
 
     // Gets ID for picking
     S32 getMeshID() { return mMeshID; }
 
-    void setIsTransparent(BOOL is_transparent) { mIsTransparent = is_transparent; }
+    void setIsTransparent(bool is_transparent) { mIsTransparent = is_transparent; }
 
 private:
     // Allocate skin data
-    BOOL allocateSkinData( U32 numSkinJoints );
+    bool allocateSkinData( U32 numSkinJoints );
 
     // Free skin data
     void freeSkinData();
diff --git a/indra/llappearance/lldriverparam.cpp b/indra/llappearance/lldriverparam.cpp
index 4a2db2aefb..2e933f9357 100644
--- a/indra/llappearance/lldriverparam.cpp
+++ b/indra/llappearance/lldriverparam.cpp
@@ -41,16 +41,16 @@ LLDriverParamInfo::LLDriverParamInfo() :
 {
 }
 
-BOOL LLDriverParamInfo::parseXml(LLXmlTreeNode* node)
+bool LLDriverParamInfo::parseXml(LLXmlTreeNode* node)
 {
     llassert( node->hasName( "param" ) && node->getChildByName( "param_driver" ) );
 
     if( !LLViewerVisualParamInfo::parseXml( node ))
-        return FALSE;
+        return false;
 
     LLXmlTreeNode* param_driver_node = node->getChildByName( "param_driver" );
     if( !param_driver_node )
-        return FALSE;
+        return false;
 
     for (LLXmlTreeNode* child = param_driver_node->getChildByName( "driven" );
          child;
@@ -90,10 +90,10 @@ BOOL LLDriverParamInfo::parseXml(LLXmlTreeNode* node)
         else
         {
             LL_ERRS() << "<driven> Unable to resolve driven parameter: " << driven_id << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //virtual
@@ -187,18 +187,18 @@ LLDriverParam::~LLDriverParam()
 {
 }
 
-BOOL LLDriverParam::setInfo(LLDriverParamInfo *info)
+bool LLDriverParam::setInfo(LLDriverParamInfo *info)
 {
     llassert(mInfo == NULL);
     if (info->mID < 0)
-        return FALSE;
+        return false;
     mInfo = info;
     mID = info->mID;
     info->mDriverParam = this;
 
     setWeight(getDefaultWeight());
 
-    return TRUE;
+    return true;
 }
 
 /*virtual*/ LLViewerVisualParam* LLDriverParam::cloneParam(LLWearable* wearable) const
@@ -422,7 +422,7 @@ const LLVector4a*   LLDriverParam::getNextDistortion(U32 *index, LLPolyMesh **po
 
 S32 LLDriverParam::getDrivenParamsCount() const
 {
-    return mDriven.size();
+    return static_cast<S32>(mDriven.size());
 }
 
 const LLViewerVisualParam* LLDriverParam::getDrivenParam(S32 index) const
@@ -461,25 +461,25 @@ void LLDriverParam::stopAnimating()
 
     for(LLDrivenEntry& driven : mDriven)
     {
-        driven.mParam->setAnimating(FALSE);
+        driven.mParam->setAnimating(false);
     }
 }
 
 /*virtual*/
-BOOL LLDriverParam::linkDrivenParams(visual_param_mapper mapper, BOOL only_cross_params)
+bool LLDriverParam::linkDrivenParams(visual_param_mapper mapper, bool only_cross_params)
 {
-    BOOL success = TRUE;
+    bool success = true;
     for (LLDrivenEntryInfo& driven_info : getInfo()->mDrivenInfoList)
     {
         S32 driven_id = driven_info.mDrivenID;
 
         // check for already existing links. Do not overwrite.
-        BOOL found = FALSE;
+        bool found = false;
         for (auto& driven : mDriven)
         {
             if (driven.mInfo->mDrivenID == driven_id)
             {
-                found = TRUE;
+                found = true;
             }
         }
 
@@ -494,7 +494,7 @@ BOOL LLDriverParam::linkDrivenParams(visual_param_mapper mapper, BOOL only_cross
             }
             else
             {
-                success = FALSE;
+                success = false;
             }
         }
     }
diff --git a/indra/llappearance/lldriverparam.h b/indra/llappearance/lldriverparam.h
index f93660dba3..59092988dd 100644
--- a/indra/llappearance/lldriverparam.h
+++ b/indra/llappearance/lldriverparam.h
@@ -65,7 +65,7 @@ public:
     LLDriverParamInfo();
     /*virtual*/ ~LLDriverParamInfo() {};
 
-    /*virtual*/ BOOL parseXml(LLXmlTreeNode* node);
+    /*virtual*/ bool parseXml(LLXmlTreeNode* node);
 
     /*virtual*/ void toStream(std::ostream &out);
 
@@ -90,7 +90,7 @@ public:
     // Special: These functions are overridden by child classes
     LLDriverParamInfo* getInfo() const { return (LLDriverParamInfo*)mInfo; }
     //   This sets mInfo and calls initialization functions
-    BOOL                    setInfo(LLDriverParamInfo* info);
+    bool                    setInfo(LLDriverParamInfo* info);
 
     LLAvatarAppearance* getAvatarAppearance() { return mAvatarAppearance; }
     const LLAvatarAppearance* getAvatarAppearance() const { return mAvatarAppearance; }
@@ -104,7 +104,7 @@ public:
     /*virtual*/ void                setWeight(F32 weight);
     /*virtual*/ void                setAnimationTarget(F32 target_value);
     /*virtual*/ void                stopAnimating();
-    /*virtual*/ BOOL                linkDrivenParams(visual_param_mapper mapper, BOOL only_cross_params);
+    /*virtual*/ bool                linkDrivenParams(visual_param_mapper mapper, bool only_cross_params);
     /*virtual*/ void                resetDrivenParams();
 
     // LLViewerVisualParam Virtual functions
@@ -130,10 +130,10 @@ protected:
 
     LL_ALIGN_16(LLVector4a  mDefaultVec); // temp holder
     entry_list_t mDriven;
-    LLViewerVisualParam* mCurrentDistortionParam;
+    LLViewerVisualParam* mCurrentDistortionParam{ nullptr };
     // Backlink only; don't make this an LLPointer.
-    LLAvatarAppearance* mAvatarAppearance;
-    LLWearable* mWearablep;
+    LLAvatarAppearance* mAvatarAppearance{ nullptr };
+    LLWearable* mWearablep{ nullptr };
 };
 
 #endif  // LL_LLDRIVERPARAM_H
diff --git a/indra/llappearance/lllocaltextureobject.cpp b/indra/llappearance/lllocaltextureobject.cpp
index dfc61382ea..f743f7b517 100644
--- a/indra/llappearance/lllocaltextureobject.cpp
+++ b/indra/llappearance/lllocaltextureobject.cpp
@@ -36,14 +36,14 @@
 
 
 LLLocalTextureObject::LLLocalTextureObject() :
-    mIsBakedReady(FALSE),
+    mIsBakedReady(false),
     mDiscard(MAX_DISCARD_LEVEL+1)
 {
     mImage = NULL;
 }
 
 LLLocalTextureObject::LLLocalTextureObject(LLGLTexture* image, const LLUUID& id) :
-    mIsBakedReady(FALSE),
+    mIsBakedReady(false),
     mDiscard(MAX_DISCARD_LEVEL+1)
 {
     mImage = image;
@@ -109,7 +109,7 @@ LLTexLayer* LLLocalTextureObject::getTexLayer(const std::string &name)
 
 U32 LLLocalTextureObject::getNumTexLayers() const
 {
-    return mTexLayers.size();
+    return static_cast<U32>(mTexLayers.size());
 }
 
 LLUUID LLLocalTextureObject::getID() const
@@ -122,7 +122,7 @@ S32 LLLocalTextureObject::getDiscard() const
     return mDiscard;
 }
 
-BOOL LLLocalTextureObject::getBakedReady() const
+bool LLLocalTextureObject::getBakedReady() const
 {
     return mIsBakedReady;
 }
@@ -132,11 +132,11 @@ void LLLocalTextureObject::setImage(LLGLTexture* new_image)
     mImage = new_image;
 }
 
-BOOL LLLocalTextureObject::setTexLayer(LLTexLayer *new_tex_layer, U32 index)
+bool LLLocalTextureObject::setTexLayer(LLTexLayer *new_tex_layer, U32 index)
 {
     if (index >= getNumTexLayers() )
     {
-        return FALSE;
+        return false;
     }
 
     if (new_tex_layer == NULL)
@@ -153,47 +153,47 @@ BOOL LLLocalTextureObject::setTexLayer(LLTexLayer *new_tex_layer, U32 index)
     }
     mTexLayers[index] = layer;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLLocalTextureObject::addTexLayer(LLTexLayer *new_tex_layer, LLWearable *wearable)
+bool LLLocalTextureObject::addTexLayer(LLTexLayer *new_tex_layer, LLWearable *wearable)
 {
     if (new_tex_layer == NULL)
     {
-        return FALSE;
+        return false;
     }
 
     LLTexLayer *layer = new LLTexLayer(*new_tex_layer, wearable);
     layer->setLTO(this);
     mTexLayers.push_back(layer);
-    return TRUE;
+    return true;
 }
 
-BOOL LLLocalTextureObject::addTexLayer(LLTexLayerTemplate *new_tex_layer, LLWearable *wearable)
+bool LLLocalTextureObject::addTexLayer(LLTexLayerTemplate *new_tex_layer, LLWearable *wearable)
 {
     if (new_tex_layer == NULL)
     {
-        return FALSE;
+        return false;
     }
 
     LLTexLayer *layer = new LLTexLayer(*new_tex_layer, this, wearable);
     layer->setLTO(this);
     mTexLayers.push_back(layer);
-    return TRUE;
+    return true;
 }
 
-BOOL LLLocalTextureObject::removeTexLayer(U32 index)
+bool LLLocalTextureObject::removeTexLayer(U32 index)
 {
     if (index >= getNumTexLayers())
     {
-        return FALSE;
+        return false;
     }
     tex_layer_vec_t::iterator iter = mTexLayers.begin();
     iter += index;
 
     delete *iter;
     mTexLayers.erase(iter);
-    return TRUE;
+    return true;
 }
 
 void LLLocalTextureObject::setID(LLUUID new_id)
@@ -206,7 +206,7 @@ void LLLocalTextureObject::setDiscard(S32 new_discard)
     mDiscard = new_discard;
 }
 
-void LLLocalTextureObject::setBakedReady(BOOL ready)
+void LLLocalTextureObject::setBakedReady(bool ready)
 {
     mIsBakedReady = ready;
 }
diff --git a/indra/llappearance/lllocaltextureobject.h b/indra/llappearance/lllocaltextureobject.h
index f981e73789..5505ef205a 100644
--- a/indra/llappearance/lllocaltextureobject.h
+++ b/indra/llappearance/lllocaltextureobject.h
@@ -53,17 +53,17 @@ public:
     U32         getNumTexLayers() const;
     LLUUID      getID() const;
     S32         getDiscard() const;
-    BOOL        getBakedReady() const;
+    bool        getBakedReady() const;
 
     void setImage(LLGLTexture* new_image);
-    BOOL setTexLayer(LLTexLayer *new_tex_layer, U32 index);
-    BOOL addTexLayer(LLTexLayer *new_tex_layer, LLWearable *wearable);
-    BOOL addTexLayer(LLTexLayerTemplate *new_tex_layer, LLWearable *wearable);
-    BOOL removeTexLayer(U32 index);
+    bool setTexLayer(LLTexLayer *new_tex_layer, U32 index);
+    bool addTexLayer(LLTexLayer *new_tex_layer, LLWearable *wearable);
+    bool addTexLayer(LLTexLayerTemplate *new_tex_layer, LLWearable *wearable);
+    bool removeTexLayer(U32 index);
 
     void setID(LLUUID new_id);
     void setDiscard(S32 new_discard);
-    void setBakedReady(BOOL ready);
+    void setBakedReady(bool ready);
 
 protected:
 
@@ -78,7 +78,7 @@ private:
 
     LLUUID          mID;
 
-    BOOL mIsBakedReady;
+    bool mIsBakedReady;
     S32 mDiscard;
 };
 
diff --git a/indra/llappearance/llpolymesh.cpp b/indra/llappearance/llpolymesh.cpp
index 819e95ef52..719381b4fc 100644
--- a/indra/llappearance/llpolymesh.cpp
+++ b/indra/llappearance/llpolymesh.cpp
@@ -72,8 +72,8 @@ LLPolyMeshSharedData::LLPolyMeshSharedData()
         mTexCoords = NULL;
         mDetailTexCoords = NULL;
         mWeights = NULL;
-        mHasWeights = FALSE;
-        mHasDetailTexCoords = FALSE;
+        mHasWeights = false;
+        mHasDetailTexCoords = false;
 
         mNumFaces = 0;
         mFaces = NULL;
@@ -225,7 +225,7 @@ U32 LLPolyMeshSharedData::getNumKB()
 //-----------------------------------------------------------------------------
 // LLPolyMeshSharedData::allocateVertexData()
 //-----------------------------------------------------------------------------
-BOOL LLPolyMeshSharedData::allocateVertexData( U32 numVertices )
+bool LLPolyMeshSharedData::allocateVertexData( U32 numVertices )
 {
         U32 i;
         mBaseCoords = (LLVector4a*) ll_aligned_malloc_16(numVertices*sizeof(LLVector4a));
@@ -243,34 +243,34 @@ BOOL LLPolyMeshSharedData::allocateVertexData( U32 numVertices )
             mWeights[i] = 0.f;
         }
         mNumVertices = numVertices;
-        return TRUE;
+        return true;
 }
 
 //-----------------------------------------------------------------------------
 // LLPolyMeshSharedData::allocateFaceData()
 //-----------------------------------------------------------------------------
-BOOL LLPolyMeshSharedData::allocateFaceData( U32 numFaces )
+bool LLPolyMeshSharedData::allocateFaceData( U32 numFaces )
 {
         mFaces = new LLPolyFace[ numFaces ];
         mNumFaces = numFaces;
         mNumTriangleIndices = mNumFaces * 3;
-        return TRUE;
+        return true;
 }
 
 //-----------------------------------------------------------------------------
 // LLPolyMeshSharedData::allocateJointNames()
 //-----------------------------------------------------------------------------
-BOOL LLPolyMeshSharedData::allocateJointNames( U32 numJointNames )
+bool LLPolyMeshSharedData::allocateJointNames( U32 numJointNames )
 {
         mJointNames = new std::string[ numJointNames ];
         mNumJointNames = numJointNames;
-        return TRUE;
+        return true;
 }
 
 //--------------------------------------------------------------------
 // LLPolyMeshSharedData::loadMesh()
 //--------------------------------------------------------------------
-BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
+bool LLPolyMeshSharedData::loadMesh( const std::string& fileName )
 {
         //-------------------------------------------------------------------------
         // Open the file
@@ -278,13 +278,13 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
         if(fileName.empty())
         {
                 LL_ERRS() << "Filename is Empty!" << LL_ENDL;
-                return FALSE;
+                return false;
         }
         LLFILE* fp = LLFile::fopen(fileName, "rb");                     /*Flawfinder: ignore*/
         if (!fp)
         {
                 LL_ERRS() << "can't open: " << fileName << LL_ENDL;
-                return FALSE;
+                return false;
         }
 
         //-------------------------------------------------------------------------
@@ -299,7 +299,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
         //-------------------------------------------------------------------------
         // Check for proper binary header
         //-------------------------------------------------------------------------
-        BOOL status = FALSE;
+        bool status = false;
         if ( strncmp(header, HEADER_BINARY, strlen(HEADER_BINARY)) == 0 )       /*Flawfinder: ignore*/
         {
                 LL_DEBUGS() << "Loading " << fileName << LL_ENDL;
@@ -317,11 +317,11 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                 if (numRead != 1)
                 {
                         LL_ERRS() << "can't read HasWeights flag from " << fileName << LL_ENDL;
-                        return FALSE;
+                        return false;
                 }
                 if (!isLOD())
                 {
-                        mHasWeights = (hasWeights==0) ? FALSE : TRUE;
+                        mHasWeights = hasWeights > 0;
                 }
 
                 //----------------------------------------------------------------
@@ -332,7 +332,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                 if (numRead != 1)
                 {
                         LL_ERRS() << "can't read HasDetailTexCoords flag from " << fileName << LL_ENDL;
-                        return FALSE;
+                        return false;
                 }
 
                 //----------------------------------------------------------------
@@ -344,7 +344,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                 if (numRead != 3)
                 {
                         LL_ERRS() << "can't read Position from " << fileName << LL_ENDL;
-                        return FALSE;
+                        return false;
                 }
                 setPosition( position );
 
@@ -357,7 +357,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                 if (numRead != 3)
                 {
                         LL_ERRS() << "can't read RotationAngles from " << fileName << LL_ENDL;
-                        return FALSE;
+                        return false;
                 }
 
                 U8 rotationOrder;
@@ -366,7 +366,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                 if (numRead != 1)
                 {
                         LL_ERRS() << "can't read RotationOrder from " << fileName << LL_ENDL;
-                        return FALSE;
+                        return false;
                 }
 
                 rotationOrder = 0;
@@ -385,7 +385,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                 if (numRead != 3)
                 {
                         LL_ERRS() << "can't read Scale from " << fileName << LL_ENDL;
-                        return FALSE;
+                        return false;
                 }
                 setScale( scale );
 
@@ -406,7 +406,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                         if (numRead != 1)
                         {
                                 LL_ERRS() << "can't read NumVertices from " << fileName << LL_ENDL;
-                                return FALSE;
+                                return false;
                         }
 
                         allocateVertexData( numVertices );
@@ -421,7 +421,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                             if (numRead != 3)
                             {
                                     LL_ERRS() << "can't read Coordinates from " << fileName << LL_ENDL;
-                                    return FALSE;
+                                    return false;
                             }
                         }
 
@@ -435,7 +435,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                             if (numRead != 3)
                             {
                                     LL_ERRS() << " can't read Normals from " << fileName << LL_ENDL;
-                                    return FALSE;
+                                    return false;
                             }
                         }
 
@@ -449,7 +449,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                             if (numRead != 3)
                             {
                                     LL_ERRS() << " can't read Binormals from " << fileName << LL_ENDL;
-                                    return FALSE;
+                                    return false;
                             }
                         }
 
@@ -461,7 +461,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                         if (numRead != numVertices)
                         {
                                 LL_ERRS() << "can't read TexCoords from " << fileName << LL_ENDL;
-                                return FALSE;
+                                return false;
                         }
 
                         //----------------------------------------------------------------
@@ -474,7 +474,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                                 if (numRead != numVertices)
                                 {
                                         LL_ERRS() << "can't read DetailTexCoords from " << fileName << LL_ENDL;
-                                        return FALSE;
+                                        return false;
                                 }
                         }
 
@@ -488,7 +488,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                                 if (numRead != numVertices)
                                 {
                                         LL_ERRS() << "can't read Weights from " << fileName << LL_ENDL;
-                                        return FALSE;
+                                        return false;
                                 }
                         }
                 }
@@ -502,7 +502,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                 if (numRead != 1)
                 {
                         LL_ERRS() << "can't read NumFaces from " << fileName << LL_ENDL;
-                        return FALSE;
+                        return false;
                 }
                 allocateFaceData( numFaces );
 
@@ -520,7 +520,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                         if (numRead != 3)
                         {
                                 LL_ERRS() << "can't read Face[" << i << "] from " << fileName << LL_ENDL;
-                                return FALSE;
+                                return false;
                         }
                         if (mReferenceData)
                         {
@@ -577,7 +577,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                                 if (numRead != 1)
                                 {
                                         LL_ERRS() << "can't read NumSkinJoints from " << fileName << LL_ENDL;
-                                        return FALSE;
+                                        return false;
                                 }
                                 allocateJointNames( numSkinJoints );
                         }
@@ -593,7 +593,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                                 if (numRead != 1)
                                 {
                                         LL_ERRS() << "can't read Skin[" << i << "].Name from " << fileName << LL_ENDL;
-                                        return FALSE;
+                                        return false;
                                 }
 
                                 std::string *jn = &mJointNames[i];
@@ -615,7 +615,7 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                                 std::string morph_name(morphName);
                                 LLPolyMorphData* morph_data = new LLPolyMorphData(morph_name);
 
-                                BOOL result = morph_data->loadBinary(fp, this);
+                                bool result = morph_data->loadBinary(fp, this);
 
                                 if (!result)
                                 {
@@ -705,12 +705,12 @@ BOOL LLPolyMeshSharedData::loadMesh( const std::string& fileName )
                         }
                 }
 
-                status = TRUE;
+                status = true;
         }
         else
         {
                 LL_ERRS() << "invalid mesh file header: " << fileName << LL_ENDL;
-                status = FALSE;
+                status = false;
         }
 
         if (0 == mNumJointNames)
@@ -983,7 +983,7 @@ void LLPolyMesh::initializeForMorph()
     LLVector4a::memcpyNonAliased16((F32*) mScaledBinormals, (F32*) mSharedData->mBaseNormals, sizeof(LLVector4a) * mSharedData->mNumVertices);
     memcpy((F32*) mTexCoords, (F32*) mSharedData->mTexCoords, sizeof(LLVector2) * (mSharedData->mNumVertices)); // allocated in LLPolyMeshSharedData::allocateVertexData
 
-    for (U32 i = 0; i < mSharedData->mNumVertices; ++i)
+    for (S32 i = 0; i < mSharedData->mNumVertices; ++i)
     {
         mClothingWeights[i].clear();
     }
diff --git a/indra/llappearance/llpolymesh.h b/indra/llappearance/llpolymesh.h
index b8906e378f..5f8b4eab02 100644
--- a/indra/llappearance/llpolymesh.h
+++ b/indra/llappearance/llpolymesh.h
@@ -79,8 +79,8 @@ private:
     LLVector2               *mDetailTexCoords;
     F32                     *mWeights;
 
-    BOOL                    mHasWeights;
-    BOOL                    mHasDetailTexCoords;
+    bool                    mHasWeights;
+    bool                    mHasDetailTexCoords;
 
     // face data
     S32                     mNumFaces;
@@ -119,17 +119,17 @@ private:
     void setRotation( const LLQuaternion &rot ) { mRotation = rot; }
     void setScale( const LLVector3 &scale ) { mScale = scale; }
 
-    BOOL allocateVertexData( U32 numVertices );
+    bool allocateVertexData( U32 numVertices );
 
-    BOOL allocateFaceData( U32 numFaces );
+    bool allocateFaceData( U32 numFaces );
 
-    BOOL allocateJointNames( U32 numJointNames );
+    bool allocateJointNames( U32 numJointNames );
 
     // Retrieve the number of KB of memory used by this instance
     U32 getNumKB();
 
     // Load mesh data from file
-    BOOL loadMesh( const std::string& fileName );
+    bool loadMesh( const std::string& fileName );
 
 public:
     void genIndices(S32 offset);
@@ -138,7 +138,7 @@ public:
 
     const S32   *getSharedVert(S32 vert);
 
-    BOOL isLOD() { return (mReferenceData != NULL); }
+    bool isLOD() { return (mReferenceData != NULL); }
 };
 
 
@@ -204,13 +204,13 @@ public:
     }
 
     // Returns whether or not the mesh has detail texture coords
-    BOOL hasDetailTexCoords() {
+    bool hasDetailTexCoords() {
         llassert (mSharedData);
         return mSharedData->mHasDetailTexCoords;
     }
 
     // Returns whether or not the mesh has vertex weights
-    BOOL hasWeights() const{
+    bool hasWeights() const{
         llassert (mSharedData);
         return mSharedData->mHasWeights;
     }
@@ -316,7 +316,7 @@ public:
     // Get indices
     U32*    getIndices() { return mSharedData ? mSharedData->mTriangleIndices : NULL; }
 
-    BOOL    isLOD() { return mSharedData && mSharedData->isLOD(); }
+    bool    isLOD() { return mSharedData && mSharedData->isLOD(); }
 
     void setAvatar(LLAvatarAppearance* avatarp) { mAvatarp = avatarp; }
     LLAvatarAppearance* getAvatar() { return mAvatarp; }
diff --git a/indra/llappearance/llpolymorph.cpp b/indra/llappearance/llpolymorph.cpp
index c780778c7b..7ae760d312 100644
--- a/indra/llappearance/llpolymorph.cpp
+++ b/indra/llappearance/llpolymorph.cpp
@@ -104,17 +104,17 @@ LLPolyMorphData::~LLPolyMorphData()
 //-----------------------------------------------------------------------------
 // loadBinary()
 //-----------------------------------------------------------------------------
-BOOL LLPolyMorphData::loadBinary(LLFILE *fp, LLPolyMeshSharedData *mesh)
+bool LLPolyMorphData::loadBinary(LLFILE *fp, LLPolyMeshSharedData *mesh)
 {
     S32 numVertices;
-    S32 numRead;
+    size_t numRead;
 
     numRead = fread(&numVertices, sizeof(S32), 1, fp);
     llendianswizzle(&numVertices, sizeof(S32), 1);
     if (numRead != 1)
     {
         LL_WARNS() << "Can't read number of morph target vertices" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     //-------------------------------------------------------------------------
@@ -151,14 +151,14 @@ BOOL LLPolyMorphData::loadBinary(LLFILE *fp, LLPolyMeshSharedData *mesh)
         if (numRead != 1)
         {
             LL_WARNS() << "Can't read morph target vertex number" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         if (mVertexIndices[v] > 10000)
         {
             // Bad install? These are usually .llm files from 'character' fodler
             LL_WARNS() << "Bad morph index " << v << ": " << mVertexIndices[v] << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
 
@@ -167,7 +167,7 @@ BOOL LLPolyMorphData::loadBinary(LLFILE *fp, LLPolyMeshSharedData *mesh)
         if (numRead != 3)
         {
             LL_WARNS() << "Can't read morph target vertex coordinates" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         F32 magnitude = mCoords[v].getLength3().getF32();
@@ -187,7 +187,7 @@ BOOL LLPolyMorphData::loadBinary(LLFILE *fp, LLPolyMeshSharedData *mesh)
         if (numRead != 3)
         {
             LL_WARNS() << "Can't read morph target normal" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         numRead = fread(&mBinormals[v], sizeof(F32), 3, fp);
@@ -195,7 +195,7 @@ BOOL LLPolyMorphData::loadBinary(LLFILE *fp, LLPolyMeshSharedData *mesh)
         if (numRead != 3)
         {
             LL_WARNS() << "Can't read morph target binormal" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
 
@@ -204,7 +204,7 @@ BOOL LLPolyMorphData::loadBinary(LLFILE *fp, LLPolyMeshSharedData *mesh)
         if (numRead != 2)
         {
             LL_WARNS() << "Can't read morph target uv" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         mNumIndices++;
@@ -213,7 +213,7 @@ BOOL LLPolyMorphData::loadBinary(LLFILE *fp, LLPolyMeshSharedData *mesh)
     mAvgDistortion.mul(1.f/(F32)mNumIndices);
     mAvgDistortion.normalize3fast();
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -256,23 +256,23 @@ void LLPolyMorphData::freeData()
 // LLPolyMorphTargetInfo()
 //-----------------------------------------------------------------------------
 LLPolyMorphTargetInfo::LLPolyMorphTargetInfo()
-    : mIsClothingMorph(FALSE)
+    : mIsClothingMorph(false)
 {
 }
 
-BOOL LLPolyMorphTargetInfo::parseXml(LLXmlTreeNode* node)
+bool LLPolyMorphTargetInfo::parseXml(LLXmlTreeNode* node)
 {
     llassert( node->hasName( "param" ) && node->getChildByName( "param_morph" ) );
 
     if (!LLViewerVisualParamInfo::parseXml(node))
-        return FALSE;
+        return false;
 
     // Get mixed-case name
     static LLStdStringHandle name_string = LLXmlTree::addAttributeString("name");
     if( !node->getFastAttributeString( name_string, mMorphName ) )
     {
         LL_WARNS() << "Avatar file: <param> is missing name attribute" << LL_ENDL;
-        return FALSE;  // Continue, ignoring this tag
+        return false;  // Continue, ignoring this tag
     }
 
     static LLStdStringHandle clothing_morph_string = LLXmlTree::addAttributeString("clothing_morph");
@@ -284,7 +284,7 @@ BOOL LLPolyMorphTargetInfo::parseXml(LLXmlTreeNode* node)
         {
                 LL_WARNS() << "Failed to getChildByName(\"param_morph\")"
                         << LL_ENDL;
-                return FALSE;
+                return false;
         }
 
     for (LLXmlTreeNode* child_node = paramNode->getFirstChild();
@@ -310,7 +310,7 @@ BOOL LLPolyMorphTargetInfo::parseXml(LLXmlTreeNode* node)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -353,11 +353,11 @@ LLPolyMorphTarget::~LLPolyMorphTarget()
 //-----------------------------------------------------------------------------
 // setInfo()
 //-----------------------------------------------------------------------------
-BOOL LLPolyMorphTarget::setInfo(LLPolyMorphTargetInfo* info)
+bool LLPolyMorphTarget::setInfo(LLPolyMorphTargetInfo* info)
 {
     llassert(mInfo == NULL);
     if (info->mID < 0)
-        return FALSE;
+        return false;
     mInfo = info;
     mID = info->mID;
     setWeight(getDefaultWeight());
@@ -384,8 +384,8 @@ BOOL LLPolyMorphTarget::setInfo(LLPolyMorphTargetInfo* info)
     if (!mMorphData)
     {
         const std::string driven_tag = "_Driven";
-        U32 pos = morph_param_name.find(driven_tag);
-        if (pos > 0)
+        auto pos = morph_param_name.find(driven_tag);
+        if (pos != std::string::npos && pos > 0)
         {
             morph_param_name = morph_param_name.substr(0,pos);
             mMorphData = mMesh->getMorphData(morph_param_name);
@@ -394,9 +394,9 @@ BOOL LLPolyMorphTarget::setInfo(LLPolyMorphTargetInfo* info)
     if (!mMorphData)
     {
         LL_WARNS() << "No morph target named " << morph_param_name << " found in mesh." << LL_ENDL;
-        return FALSE;  // Continue, ignoring this tag
+        return false;  // Continue, ignoring this tag
     }
-    return TRUE;
+    return true;
 }
 
 /*virtual*/ LLViewerVisualParam* LLPolyMorphTarget::cloneParam(LLWearable* wearable) const
@@ -408,7 +408,7 @@ BOOL LLPolyMorphTarget::setInfo(LLPolyMorphTargetInfo* info)
 //-----------------------------------------------------------------------------
 // parseData()
 //-----------------------------------------------------------------------------
-BOOL LLPolyMorphTarget::parseData(LLXmlTreeNode* node)
+bool LLPolyMorphTarget::parseData(LLXmlTreeNode* node)
 {
     LLPolyMorphTargetInfo* info = new LLPolyMorphTargetInfo;
 
@@ -416,9 +416,9 @@ BOOL LLPolyMorphTarget::parseData(LLXmlTreeNode* node)
     if (!setInfo(info))
     {
         delete info;
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 #endif
 
@@ -659,7 +659,7 @@ void LLPolyMorphTarget::apply( ESex avatar_sex )
 //-----------------------------------------------------------------------------
 // applyMask()
 //-----------------------------------------------------------------------------
-void    LLPolyMorphTarget::applyMask(U8 *maskTextureData, S32 width, S32 height, S32 num_components, BOOL invert)
+void    LLPolyMorphTarget::applyMask(const U8 *maskTextureData, S32 width, S32 height, S32 num_components, bool invert)
 {
     LLVector4a *clothing_weights = getInfo()->mIsClothingMorph ? mMesh->getWritableClothingWeights() : NULL;
 
@@ -749,7 +749,7 @@ void LLPolyMorphTarget::applyVolumeChanges(F32 delta_weight)
 LLPolyVertexMask::LLPolyVertexMask(LLPolyMorphData* morph_data)
     : mWeights(new F32[morph_data->mNumIndices]),
     mMorphData(morph_data),
-    mWeightsGenerated(FALSE)
+    mWeightsGenerated(false)
 {
     llassert(mMorphData != NULL);
     llassert(mMorphData->mNumIndices > 0);
@@ -780,10 +780,10 @@ LLPolyVertexMask::~LLPolyVertexMask()
 //-----------------------------------------------------------------------------
 // generateMask()
 //-----------------------------------------------------------------------------
-void LLPolyVertexMask::generateMask(U8 *maskTextureData, S32 width, S32 height, S32 num_components, BOOL invert, LLVector4a *clothing_weights)
+void LLPolyVertexMask::generateMask(const U8 *maskTextureData, S32 width, S32 height, S32 num_components, bool invert, LLVector4a *clothing_weights)
 {
 // RN debug output that uses Image Debugger (http://www.cs.unc.edu/~baxter/projects/imdebug/)
-//  BOOL debugImg = FALSE;
+//  bool debugImg = false;
 //  if (debugImg)
 //  {
 //      if (invert)
@@ -827,7 +827,7 @@ void LLPolyVertexMask::generateMask(U8 *maskTextureData, S32 width, S32 height,
             clothing_weights[vertIndex].getF32ptr()[VW] = mWeights[index];
         }
     }
-    mWeightsGenerated = TRUE;
+    mWeightsGenerated = true;
 }
 
 //-----------------------------------------------------------------------------
diff --git a/indra/llappearance/llpolymorph.h b/indra/llappearance/llpolymorph.h
index 5235e83097..8c76689f2c 100644
--- a/indra/llappearance/llpolymorph.h
+++ b/indra/llappearance/llpolymorph.h
@@ -49,7 +49,7 @@ public:
     ~LLPolyMorphData();
     LLPolyMorphData(const LLPolyMorphData &rhs);
 
-    BOOL            loadBinary(LLFILE* fp, LLPolyMeshSharedData *mesh);
+    bool            loadBinary(LLFILE* fp, LLPolyMeshSharedData *mesh);
     const std::string& getName() { return mName; }
 
 public:
@@ -84,14 +84,14 @@ public:
     LLPolyVertexMask(const LLPolyVertexMask& pOther);
     ~LLPolyVertexMask();
 
-    void generateMask(U8 *maskData, S32 width, S32 height, S32 num_components, BOOL invert, LLVector4a *clothing_weights);
+    void generateMask(const U8 *maskData, S32 width, S32 height, S32 num_components, bool invert, LLVector4a *clothing_weights);
     F32* getMorphMaskWeights();
 
 
 protected:
     F32*        mWeights;
     LLPolyMorphData *mMorphData;
-    BOOL            mWeightsGenerated;
+    bool            mWeightsGenerated;
 
 };
 
@@ -129,11 +129,11 @@ public:
     LLPolyMorphTargetInfo();
     /*virtual*/ ~LLPolyMorphTargetInfo() {};
 
-    /*virtual*/ BOOL parseXml(LLXmlTreeNode* node);
+    /*virtual*/ bool parseXml(LLXmlTreeNode* node);
 
 protected:
     std::string     mMorphName;
-    BOOL            mIsClothingMorph;
+    bool            mIsClothingMorph;
     typedef std::vector<LLPolyVolumeMorphInfo> volume_info_list_t;
     volume_info_list_t mVolumeInfoList;
 };
@@ -154,12 +154,12 @@ public:
     // Special: These functions are overridden by child classes
     LLPolyMorphTargetInfo*  getInfo() const { return (LLPolyMorphTargetInfo*)mInfo; }
     //   This sets mInfo and calls initialization functions
-    BOOL                    setInfo(LLPolyMorphTargetInfo *info);
+    bool                    setInfo(LLPolyMorphTargetInfo *info);
 
     /*virtual*/ LLViewerVisualParam* cloneParam(LLWearable* wearable) const;
 
     // LLVisualParam Virtual functions
-    ///*virtual*/ BOOL              parseData(LLXmlTreeNode* node);
+    ///*virtual*/ bool              parseData(LLXmlTreeNode* node);
     /*virtual*/ void                apply( ESex sex );
 
     // LLViewerVisualParam Virtual functions
@@ -170,7 +170,7 @@ public:
     /*virtual*/ const LLVector4a*   getFirstDistortion(U32 *index, LLPolyMesh **poly_mesh);
     /*virtual*/ const LLVector4a*   getNextDistortion(U32 *index, LLPolyMesh **poly_mesh);
 
-    void    applyMask(U8 *maskData, S32 width, S32 height, S32 num_components, BOOL invert);
+    void    applyMask(const U8 *maskData, S32 width, S32 height, S32 num_components, bool invert);
     void    addPendingMorphMask() { mNumMorphMasksPending++; }
 
     void    applyVolumeChanges(F32 delta_weight); // SL-315 - for resetSkeleton()
@@ -183,7 +183,7 @@ protected:
     LLPolyVertexMask *              mVertMask;
     ESex                            mLastSex;
     // number of morph masks that haven't been generated, must be 0 before this morph is applied
-    BOOL                            mNumMorphMasksPending;
+    S32                             mNumMorphMasksPending;
 
     typedef std::vector<LLPolyVolumeMorph> volume_list_t;
     volume_list_t                   mVolumeMorphs;
diff --git a/indra/llappearance/llpolyskeletaldistortion.cpp b/indra/llappearance/llpolyskeletaldistortion.cpp
index 1d2ff6ef4f..18c64282f1 100644
--- a/indra/llappearance/llpolyskeletaldistortion.cpp
+++ b/indra/llappearance/llpolyskeletaldistortion.cpp
@@ -45,12 +45,12 @@ LLPolySkeletalDistortionInfo::LLPolySkeletalDistortionInfo()
 {
 }
 
-BOOL LLPolySkeletalDistortionInfo::parseXml(LLXmlTreeNode* node)
+bool LLPolySkeletalDistortionInfo::parseXml(LLXmlTreeNode* node)
 {
         llassert( node->hasName( "param" ) && node->getChildByName( "param_skeleton" ) );
 
         if (!LLViewerVisualParamInfo::parseXml(node))
-                return FALSE;
+                return false;
 
         LLXmlTreeNode* skeletalParam = node->getChildByName("param_skeleton");
 
@@ -58,7 +58,7 @@ BOOL LLPolySkeletalDistortionInfo::parseXml(LLXmlTreeNode* node)
         {
                 LL_WARNS() << "Failed to getChildByName(\"param_skeleton\")"
                         << LL_ENDL;
-                return FALSE;
+                return false;
         }
 
         for( LLXmlTreeNode* bone = skeletalParam->getFirstChild(); bone; bone = skeletalParam->getNextChild() )
@@ -68,7 +68,7 @@ BOOL LLPolySkeletalDistortionInfo::parseXml(LLXmlTreeNode* node)
                         std::string name;
                         LLVector3 scale;
                         LLVector3 pos;
-                        BOOL haspos = FALSE;
+                        bool haspos = false;
 
                         static LLStdStringHandle name_string = LLXmlTree::addAttributeString("name");
                         if (!bone->getFastAttributeString(name_string, name))
@@ -88,7 +88,7 @@ BOOL LLPolySkeletalDistortionInfo::parseXml(LLXmlTreeNode* node)
                         static LLStdStringHandle offset_string = LLXmlTree::addAttributeString("offset");
                         if (bone->getFastAttributeVector3(offset_string, pos))
                         {
-                                haspos = TRUE;
+                                haspos = true;
                         }
                         mBoneInfoList.push_back(LLPolySkeletalBoneInfo(name, scale, pos, haspos));
                 }
@@ -98,7 +98,7 @@ BOOL LLPolySkeletalDistortionInfo::parseXml(LLXmlTreeNode* node)
                         continue;
                 }
         }
-        return TRUE;
+        return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -133,11 +133,11 @@ LLPolySkeletalDistortion::~LLPolySkeletalDistortion()
 {
 }
 
-BOOL LLPolySkeletalDistortion::setInfo(LLPolySkeletalDistortionInfo *info)
+bool LLPolySkeletalDistortion::setInfo(LLPolySkeletalDistortionInfo *info)
 {
     if (info->mID < 0)
     {
-        return FALSE;
+        return false;
     }
     mInfo = info;
     mID = info->mID;
@@ -151,7 +151,7 @@ BOOL LLPolySkeletalDistortion::setInfo(LLPolySkeletalDistortionInfo *info)
             // There's no point continuing after this error - means
             // that either the skeleton or lad file is broken.
             LL_WARNS() << "Joint " << bone_info.mBoneName << " not found." << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         // store it
@@ -174,7 +174,7 @@ BOOL LLPolySkeletalDistortion::setInfo(LLPolySkeletalDistortionInfo *info)
             mJointOffsets[joint] = bone_info.mPositionDeformation;
         }
     }
-    return TRUE;
+    return true;
 }
 
 /*virtual*/ LLViewerVisualParam* LLPolySkeletalDistortion::cloneParam(LLWearable* wearable) const
diff --git a/indra/llappearance/llpolyskeletaldistortion.h b/indra/llappearance/llpolyskeletaldistortion.h
index 818c363c39..9ba4cf66e9 100644
--- a/indra/llappearance/llpolyskeletaldistortion.h
+++ b/indra/llappearance/llpolyskeletaldistortion.h
@@ -51,7 +51,7 @@ class LLAvatarAppearance;
 //-----------------------------------------------------------------------------
 struct LLPolySkeletalBoneInfo
 {
-    LLPolySkeletalBoneInfo(std::string &name, LLVector3 &scale, LLVector3 &pos, BOOL haspos)
+    LLPolySkeletalBoneInfo(std::string &name, LLVector3 &scale, LLVector3 &pos, bool haspos)
         : mBoneName(name),
           mScaleDeformation(scale),
           mPositionDeformation(pos),
@@ -59,7 +59,7 @@ struct LLPolySkeletalBoneInfo
     std::string mBoneName;
     LLVector3 mScaleDeformation;
     LLVector3 mPositionDeformation;
-    BOOL mHasPositionDeformation;
+    bool mHasPositionDeformation;
 };
 
 class alignas(16) LLPolySkeletalDistortionInfo : public LLViewerVisualParamInfo
@@ -71,7 +71,7 @@ public:
     LLPolySkeletalDistortionInfo();
     /*virtual*/ ~LLPolySkeletalDistortionInfo() {};
 
-    /*virtual*/ BOOL parseXml(LLXmlTreeNode* node);
+    /*virtual*/ bool parseXml(LLXmlTreeNode* node);
 
 protected:
     typedef std::vector<LLPolySkeletalBoneInfo> bone_info_list_t;
@@ -92,12 +92,12 @@ public:
     // Special: These functions are overridden by child classes
     LLPolySkeletalDistortionInfo*   getInfo() const { return (LLPolySkeletalDistortionInfo*)mInfo; }
     //   This sets mInfo and calls initialization functions
-    BOOL                            setInfo(LLPolySkeletalDistortionInfo *info);
+    bool                            setInfo(LLPolySkeletalDistortionInfo *info);
 
     /*virtual*/ LLViewerVisualParam* cloneParam(LLWearable* wearable) const;
 
     // LLVisualParam Virtual functions
-    ///*virtual*/ BOOL              parseData(LLXmlTreeNode* node);
+    ///*virtual*/ bool              parseData(LLXmlTreeNode* node);
     /*virtual*/ void                apply( ESex sex );
 
     // LLViewerVisualParam Virtual functions
diff --git a/indra/llappearance/lltexglobalcolor.cpp b/indra/llappearance/lltexglobalcolor.cpp
index a90e159820..e39a856b78 100644
--- a/indra/llappearance/lltexglobalcolor.cpp
+++ b/indra/llappearance/lltexglobalcolor.cpp
@@ -48,7 +48,7 @@ LLTexGlobalColor::~LLTexGlobalColor()
     //std::for_each(mParamColorList.begin(), mParamColorList.end(), DeletePointer());
 }
 
-BOOL LLTexGlobalColor::setInfo(LLTexGlobalColorInfo *info)
+bool LLTexGlobalColor::setInfo(LLTexGlobalColorInfo *info)
 {
     llassert(mInfo == NULL);
     mInfo = info;
@@ -58,15 +58,15 @@ BOOL LLTexGlobalColor::setInfo(LLTexGlobalColorInfo *info)
     for (LLTexLayerParamColorInfo* color_info : mInfo->mParamColorInfoList)
     {
         LLTexParamGlobalColor* param_color = new LLTexParamGlobalColor(this);
-        if (!param_color->setInfo(color_info, TRUE))
+        if (!param_color->setInfo(color_info, true))
         {
             mInfo = NULL;
-            return FALSE;
+            return false;
         }
         mParamGlobalColorList.push_back(param_color);
     }
 
-    return TRUE;
+    return true;
 }
 
 LLColor4 LLTexGlobalColor::getColor() const
@@ -135,14 +135,14 @@ LLTexGlobalColorInfo::~LLTexGlobalColorInfo()
     mParamColorInfoList.clear();
 }
 
-BOOL LLTexGlobalColorInfo::parseXml(LLXmlTreeNode* node)
+bool LLTexGlobalColorInfo::parseXml(LLXmlTreeNode* node)
 {
     // name attribute
     static LLStdStringHandle name_string = LLXmlTree::addAttributeString("name");
     if (!node->getFastAttributeString(name_string, mName))
     {
         LL_WARNS() << "<global_color> element is missing name attribute." << LL_ENDL;
-        return FALSE;
+        return false;
     }
     // <param> sub-element
     for (LLXmlTreeNode* child = node->getChildByName("param");
@@ -156,10 +156,10 @@ BOOL LLTexGlobalColorInfo::parseXml(LLXmlTreeNode* node)
             if (!info->parseXml(child))
             {
                 delete info;
-                return FALSE;
+                return false;
             }
             mParamColorInfoList.push_back(info);
         }
     }
-    return TRUE;
+    return true;
 }
diff --git a/indra/llappearance/lltexglobalcolor.h b/indra/llappearance/lltexglobalcolor.h
index 183eb47a4a..7561ea7df9 100644
--- a/indra/llappearance/lltexglobalcolor.h
+++ b/indra/llappearance/lltexglobalcolor.h
@@ -42,7 +42,7 @@ public:
 
     LLTexGlobalColorInfo*   getInfo() const { return mInfo; }
     //   This sets mInfo and calls initialization functions
-    BOOL                    setInfo(LLTexGlobalColorInfo *info);
+    bool                    setInfo(LLTexGlobalColorInfo *info);
 
     LLAvatarAppearance*     getAvatarAppearance()   const       { return mAvatarAppearance; }
     LLColor4                getColor() const;
@@ -62,7 +62,7 @@ public:
     LLTexGlobalColorInfo();
     ~LLTexGlobalColorInfo();
 
-    BOOL parseXml(LLXmlTreeNode* node);
+    bool parseXml(LLXmlTreeNode* node);
 
 private:
     param_color_info_list_t     mParamColorInfoList;
diff --git a/indra/llappearance/lltexlayer.cpp b/indra/llappearance/lltexlayer.cpp
index 4fc9ada15e..27656c8302 100644
--- a/indra/llappearance/lltexlayer.cpp
+++ b/indra/llappearance/lltexlayer.cpp
@@ -59,17 +59,17 @@ public:
     LLTexLayerInfo();
     ~LLTexLayerInfo();
 
-    BOOL parseXml(LLXmlTreeNode* node);
-    BOOL createVisualParams(LLAvatarAppearance *appearance);
-    BOOL isUserSettable() { return mLocalTexture != -1; }
+    bool parseXml(LLXmlTreeNode* node);
+    bool createVisualParams(LLAvatarAppearance *appearance);
+    bool isUserSettable() { return mLocalTexture != -1; }
     S32  getLocalTexture() const { return mLocalTexture; }
-    BOOL getOnlyAlpha() const { return mUseLocalTextureAlphaOnly; }
+    bool getOnlyAlpha() const { return mUseLocalTextureAlphaOnly; }
     std::string getName() const { return mName; }
 
 private:
     std::string             mName;
 
-    BOOL                    mWriteAllChannels; // Don't use masking.  Just write RGBA into buffer,
+    bool                    mWriteAllChannels; // Don't use masking.  Just write RGBA into buffer,
     LLTexLayerInterface::ERenderPass mRenderPass;
 
     std::string             mGlobalColor;
@@ -77,11 +77,11 @@ private:
 
     S32                     mLocalTexture;
     std::string             mStaticImageFileName;
-    BOOL                    mStaticImageIsMask;
-    BOOL                    mUseLocalTextureAlphaOnly; // Ignore RGB channels from the input texture.  Use alpha as a mask
-    BOOL                    mIsVisibilityMask;
+    bool                    mStaticImageIsMask;
+    bool                    mUseLocalTextureAlphaOnly; // Ignore RGB channels from the input texture.  Use alpha as a mask
+    bool                    mIsVisibilityMask;
 
-    typedef std::vector< std::pair< std::string,BOOL > > morph_name_list_t;
+    typedef std::vector< std::pair< std::string,bool > > morph_name_list_t;
     morph_name_list_t           mMorphNameList;
     param_color_info_list_t     mParamColorInfoList;
     param_alpha_info_list_t     mParamAlphaInfoList;
@@ -130,17 +130,17 @@ void LLTexLayerSetBuffer::preRenderTexLayerSet()
 }
 
 // virtual
-void LLTexLayerSetBuffer::postRenderTexLayerSet(BOOL success)
+void LLTexLayerSetBuffer::postRenderTexLayerSet(bool success)
 {
     popProjection();
 }
 
-BOOL LLTexLayerSetBuffer::renderTexLayerSet(LLRenderTarget* bound_target)
+bool LLTexLayerSetBuffer::renderTexLayerSet(LLRenderTarget* bound_target)
 {
     // Default color mask for tex layer render
     gGL.setColorMask(true, true);
 
-    BOOL success = TRUE;
+    bool success = true;
 
     gAlphaMaskProgram.bind();
     gAlphaMaskProgram.setMinimumAlpha(0.004f);
@@ -175,7 +175,7 @@ LLTexLayerSetInfo::LLTexLayerSetInfo() :
     mBodyRegion( "" ),
     mWidth( 512 ),
     mHeight( 512 ),
-    mClearAlpha( TRUE )
+    mClearAlpha( true )
 {
 }
 
@@ -185,12 +185,12 @@ LLTexLayerSetInfo::~LLTexLayerSetInfo( )
     mLayerInfoList.clear();
 }
 
-BOOL LLTexLayerSetInfo::parseXml(LLXmlTreeNode* node)
+bool LLTexLayerSetInfo::parseXml(LLXmlTreeNode* node)
 {
     llassert( node->hasName( "layer_set" ) );
     if( !node->hasName( "layer_set" ) )
     {
-        return FALSE;
+        return false;
     }
 
     // body_region
@@ -198,20 +198,20 @@ BOOL LLTexLayerSetInfo::parseXml(LLXmlTreeNode* node)
     if( !node->getFastAttributeString( body_region_string, mBodyRegion ) )
     {
         LL_WARNS() << "<layer_set> is missing body_region attribute" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // width, height
     static LLStdStringHandle width_string = LLXmlTree::addAttributeString("width");
     if( !node->getFastAttributeS32( width_string, mWidth ) )
     {
-        return FALSE;
+        return false;
     }
 
     static LLStdStringHandle height_string = LLXmlTree::addAttributeString("height");
     if( !node->getFastAttributeS32( height_string, mHeight ) )
     {
-        return FALSE;
+        return false;
     }
 
     // Optional alpha component to apply after all compositing is complete.
@@ -230,11 +230,11 @@ BOOL LLTexLayerSetInfo::parseXml(LLXmlTreeNode* node)
         if( !info->parseXml( child ))
         {
             delete info;
-            return FALSE;
+            return false;
         }
         mLayerInfoList.push_back( info );
     }
-    return TRUE;
+    return true;
 }
 
 // creates visual params without generating layersets or layers
@@ -252,11 +252,11 @@ void LLTexLayerSetInfo::createVisualParams(LLAvatarAppearance *appearance)
 // An ordered set of texture layers that get composited into a single texture.
 //-----------------------------------------------------------------------------
 
-BOOL LLTexLayerSet::sHasCaches = FALSE;
+bool LLTexLayerSet::sHasCaches = false;
 
 LLTexLayerSet::LLTexLayerSet(LLAvatarAppearance* const appearance) :
     mAvatarAppearance( appearance ),
-    mIsVisible( TRUE ),
+    mIsVisible( true ),
     mBakedTexIndex(LLAvatarAppearanceDefines::BAKED_HEAD),
     mInfo( NULL )
 {
@@ -277,7 +277,7 @@ LLTexLayerSet::~LLTexLayerSet()
 // setInfo
 //-----------------------------------------------------------------------------
 
-BOOL LLTexLayerSet::setInfo(const LLTexLayerSetInfo *info)
+bool LLTexLayerSet::setInfo(const LLTexLayerSetInfo *info)
 {
     llassert(mInfo == NULL);
     mInfo = info;
@@ -299,7 +299,7 @@ BOOL LLTexLayerSet::setInfo(const LLTexLayerSetInfo *info)
         if (!layer->setInfo(layer_info, NULL))
         {
             mInfo = NULL;
-            return FALSE;
+            return false;
         }
         if (!layer->isVisibilityMask())
         {
@@ -315,7 +315,7 @@ BOOL LLTexLayerSet::setInfo(const LLTexLayerSetInfo *info)
 
     stop_glerror();
 
-    return TRUE;
+    return true;
 }
 
 #if 0 // obsolete
@@ -323,21 +323,21 @@ BOOL LLTexLayerSet::setInfo(const LLTexLayerSetInfo *info)
 // parseData
 //-----------------------------------------------------------------------------
 
-BOOL LLTexLayerSet::parseData(LLXmlTreeNode* node)
+bool LLTexLayerSet::parseData(LLXmlTreeNode* node)
 {
     LLTexLayerSetInfo *info = new LLTexLayerSetInfo;
 
     if (!info->parseXml(node))
     {
         delete info;
-        return FALSE;
+        return false;
     }
     if (!setInfo(info))
     {
         delete info;
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 #endif
 
@@ -354,10 +354,10 @@ void LLTexLayerSet::deleteCaches()
 }
 
 
-BOOL LLTexLayerSet::render( S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target )
+bool LLTexLayerSet::render( S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target )
 {
-    BOOL success = TRUE;
-    mIsVisible = TRUE;
+    bool success = true;
+    mIsVisible = true;
 
     if (mMaskLayerList.size() > 0)
     {
@@ -365,7 +365,7 @@ BOOL LLTexLayerSet::render( S32 x, S32 y, S32 width, S32 height, LLRenderTarget*
         {
             if (layer->isInvisibleAlphaMask())
             {
-                mIsVisible = FALSE;
+                mIsVisible = false;
             }
         }
     }
@@ -425,7 +425,7 @@ BOOL LLTexLayerSet::render( S32 x, S32 y, S32 width, S32 height, LLRenderTarget*
 }
 
 
-BOOL LLTexLayerSet::isBodyRegion(const std::string& region) const
+bool LLTexLayerSet::isBodyRegion(const std::string& region) const
 {
     return mInfo->mBodyRegion == region;
 }
@@ -484,7 +484,7 @@ void LLTexLayerSet::renderAlphaMaskTextures(S32 x, S32 y, S32 width, S32 height,
     {
         gGL.flush();
         {
-            LLGLTexture* tex = LLTexLayerStaticImageList::getInstance()->getTexture(info->mStaticAlphaFileName, TRUE);
+            LLGLTexture* tex = LLTexLayerStaticImageList::getInstance()->getTexture(info->mStaticAlphaFileName, true);
             if( tex )
             {
                 LLGLSUIDefault gls_ui;
@@ -528,21 +528,21 @@ void LLTexLayerSet::renderAlphaMaskTextures(S32 x, S32 y, S32 width, S32 height,
     gGL.setSceneBlendType(LLRender::BT_ALPHA);
 }
 
-void LLTexLayerSet::applyMorphMask(U8* tex_data, S32 width, S32 height, S32 num_components)
+void LLTexLayerSet::applyMorphMask(const U8* tex_data, S32 width, S32 height, S32 num_components)
 {
     mAvatarAppearance->applyMorphMask(tex_data, width, height, num_components, mBakedTexIndex);
 }
 
-BOOL LLTexLayerSet::isMorphValid() const
+bool LLTexLayerSet::isMorphValid() const
 {
     for(const LLTexLayerInterface* layer : mLayerList)
     {
         if (layer && !layer->isMorphValid())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 void LLTexLayerSet::invalidateMorphMasks()
@@ -561,13 +561,13 @@ void LLTexLayerSet::invalidateMorphMasks()
 // LLTexLayerInfo
 //-----------------------------------------------------------------------------
 LLTexLayerInfo::LLTexLayerInfo() :
-    mWriteAllChannels( FALSE ),
+    mWriteAllChannels( false ),
     mRenderPass(LLTexLayer::RP_COLOR),
     mFixedColor( 0.f, 0.f, 0.f, 0.f ),
     mLocalTexture( -1 ),
-    mStaticImageIsMask( FALSE ),
-    mUseLocalTextureAlphaOnly(FALSE),
-    mIsVisibilityMask(FALSE)
+    mStaticImageIsMask( false ),
+    mUseLocalTextureAlphaOnly(false),
+    mIsVisibilityMask(false)
 {
 }
 
@@ -579,7 +579,7 @@ LLTexLayerInfo::~LLTexLayerInfo( )
     mParamAlphaInfoList.clear();
 }
 
-BOOL LLTexLayerInfo::parseXml(LLXmlTreeNode* node)
+bool LLTexLayerInfo::parseXml(LLXmlTreeNode* node)
 {
     llassert( node->hasName( "layer" ) );
 
@@ -587,7 +587,7 @@ BOOL LLTexLayerInfo::parseXml(LLXmlTreeNode* node)
     static LLStdStringHandle name_string = LLXmlTree::addAttributeString("name");
     if( !node->getFastAttributeString( name_string, mName ) )
     {
-        return FALSE;
+        return false;
     }
 
     static LLStdStringHandle write_all_channels_string = LLXmlTree::addAttributeString("write_all_channels");
@@ -609,7 +609,7 @@ BOOL LLTexLayerInfo::parseXml(LLXmlTreeNode* node)
     node->getFastAttributeString( global_color_string, mGlobalColor );
 
     // Visibility mask (optional)
-    BOOL is_visibility;
+    bool is_visibility;
     static LLStdStringHandle visibility_mask_string = LLXmlTree::addAttributeString("visibility_mask");
     if (node->getFastAttributeBOOL(visibility_mask_string, is_visibility))
     {
@@ -657,13 +657,13 @@ BOOL LLTexLayerInfo::parseXml(LLXmlTreeNode* node)
             if (mLocalTexture == TEX_NUM_INDICES)
             {
                 LL_WARNS() << "<texture> element has invalid local_texture attribute: " << mName << " " << local_texture_name << LL_ENDL;
-                return FALSE;
+                return false;
             }
         }
         else
         {
             LL_WARNS() << "<texture> element is missing a required attribute. " << mName << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
 
@@ -675,10 +675,10 @@ BOOL LLTexLayerInfo::parseXml(LLXmlTreeNode* node)
         static LLStdStringHandle morph_name_string = LLXmlTree::addAttributeString("morph_name");
         if (maskNode->getFastAttributeString(morph_name_string, morph_name))
         {
-            BOOL invert = FALSE;
+            bool invert = false;
             static LLStdStringHandle invert_string = LLXmlTree::addAttributeString("invert");
             maskNode->getFastAttributeBOOL(invert_string, invert);
-            mMorphNameList.push_back(std::pair<std::string,BOOL>(morph_name,invert));
+            mMorphNameList.push_back(std::pair<std::string,bool>(morph_name,invert));
         }
     }
 
@@ -694,7 +694,7 @@ BOOL LLTexLayerInfo::parseXml(LLXmlTreeNode* node)
             if (!info->parseXml(child))
             {
                 delete info;
-                return FALSE;
+                return false;
             }
             mParamColorInfoList.push_back(info);
         }
@@ -705,37 +705,37 @@ BOOL LLTexLayerInfo::parseXml(LLXmlTreeNode* node)
             if (!info->parseXml(child))
             {
                 delete info;
-                return FALSE;
+                return false;
             }
             mParamAlphaInfoList.push_back(info);
         }
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLTexLayerInfo::createVisualParams(LLAvatarAppearance *appearance)
+bool LLTexLayerInfo::createVisualParams(LLAvatarAppearance *appearance)
 {
-    BOOL success = TRUE;
+    bool success = true;
     for (LLTexLayerParamColorInfo* color_info : mParamColorInfoList)
     {
         LLTexLayerParamColor* param_color = new LLTexLayerParamColor(appearance);
-        if (!param_color->setInfo(color_info, TRUE))
+        if (!param_color->setInfo(color_info, true))
         {
             LL_WARNS() << "NULL TexLayer Color Param could not be added to visual param list. Deleting." << LL_ENDL;
             delete param_color;
-            success = FALSE;
+            success = false;
         }
     }
 
     for (LLTexLayerParamAlphaInfo* alpha_info : mParamAlphaInfoList)
     {
         LLTexLayerParamAlpha* param_alpha = new LLTexLayerParamAlpha(appearance);
-        if (!param_alpha->setInfo(alpha_info, TRUE))
+        if (!param_alpha->setInfo(alpha_info, true))
         {
             LL_WARNS() << "NULL TexLayer Alpha Param could not be added to visual param list. Deleting." << LL_ENDL;
             delete param_alpha;
-            success = FALSE;
+            success = false;
         }
     }
 
@@ -744,9 +744,9 @@ BOOL LLTexLayerInfo::createVisualParams(LLAvatarAppearance *appearance)
 
 LLTexLayerInterface::LLTexLayerInterface(LLTexLayerSet* const layer_set):
     mTexLayerSet( layer_set ),
-    mMorphMasksValid( FALSE ),
+    mMorphMasksValid( false ),
     mInfo(NULL),
-    mHasMorph(FALSE)
+    mHasMorph(false)
 {
 }
 
@@ -760,7 +760,7 @@ LLTexLayerInterface::LLTexLayerInterface(const LLTexLayerInterface &layer, LLWea
     mHasMorph = layer.mHasMorph;
 }
 
-BOOL LLTexLayerInterface::setInfo(const LLTexLayerInfo *info, LLWearable* wearable  ) // This sets mInfo and calls initialization functions
+bool LLTexLayerInterface::setInfo(const LLTexLayerInfo *info, LLWearable* wearable  ) // This sets mInfo and calls initialization functions
 {
     // setInfo should only be called once. Code is not robust enough to handle redefinition of a texlayer.
     // Not a critical warning, but could be useful for debugging later issues. -Nyx
@@ -778,10 +778,10 @@ BOOL LLTexLayerInterface::setInfo(const LLTexLayerInfo *info, LLWearable* wearab
         if (!wearable)
             {
                 param_color = new LLTexLayerParamColor(this);
-                if (!param_color->setInfo(color_info, TRUE))
+                if (!param_color->setInfo(color_info, true))
                 {
                     mInfo = NULL;
-                    return FALSE;
+                    return false;
                 }
             }
             else
@@ -790,7 +790,7 @@ BOOL LLTexLayerInterface::setInfo(const LLTexLayerInfo *info, LLWearable* wearab
                 if (!param_color)
                 {
                     mInfo = NULL;
-                    return FALSE;
+                    return false;
                 }
             }
             mParamColorList.push_back( param_color );
@@ -803,10 +803,10 @@ BOOL LLTexLayerInterface::setInfo(const LLTexLayerInfo *info, LLWearable* wearab
             if (!wearable)
             {
                 param_alpha = new LLTexLayerParamAlpha( this );
-                if (!param_alpha->setInfo(alpha_info, TRUE))
+                if (!param_alpha->setInfo(alpha_info, true))
                 {
                     mInfo = NULL;
-                    return FALSE;
+                    return false;
                 }
             }
             else
@@ -815,13 +815,13 @@ BOOL LLTexLayerInterface::setInfo(const LLTexLayerInfo *info, LLWearable* wearab
                 if (!param_alpha)
                 {
                     mInfo = NULL;
-                    return FALSE;
+                    return false;
                 }
             }
             mParamAlphaList.push_back( param_alpha );
         }
 
-    return TRUE;
+    return true;
 }
 
 /*virtual*/ void LLTexLayerInterface::requestUpdate()
@@ -893,14 +893,14 @@ const std::string& LLTexLayerInterface::getGlobalColor() const
     return mInfo->mGlobalColor;
 }
 
-BOOL LLTexLayerInterface::isVisibilityMask() const
+bool LLTexLayerInterface::isVisibilityMask() const
 {
     return mInfo->mIsVisibilityMask;
 }
 
 void LLTexLayerInterface::invalidateMorphMasks()
 {
-    mMorphMasksValid = FALSE;
+    mMorphMasksValid = false;
 }
 
 LLViewerVisualParam* LLTexLayerInterface::getVisualParamPtr(S32 index) const
@@ -980,7 +980,7 @@ void LLTexLayer::asLLSD(LLSD& sd) const
 // setInfo
 //-----------------------------------------------------------------------------
 
-BOOL LLTexLayer::setInfo(const LLTexLayerInfo* info, LLWearable* wearable  )
+bool LLTexLayer::setInfo(const LLTexLayerInfo* info, LLWearable* wearable  )
 {
     return LLTexLayerInterface::setInfo(info, wearable);
 }
@@ -1020,14 +1020,14 @@ void LLTexLayer::calculateTexLayerColor(const param_color_list_t &param_list, LL
     }
 }
 
-BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target)
+bool LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target)
 {
     // *TODO: Is this correct?
     //gPipeline.disableLights();
     stop_glerror();
 
     LLColor4 net_color;
-    BOOL color_specified = findNetColor(&net_color);
+    bool color_specified = findNetColor(&net_color);
 
     if (mTexLayerSet->getAvatarAppearance()->mIsDummy)
     {
@@ -1035,15 +1035,15 @@ BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bou
         net_color = LLAvatarAppearance::getDummyColor();
     }
 
-    BOOL success = TRUE;
+    bool success = true;
 
     // If you can't see the layer, don't render it.
-    if( is_approx_zero( net_color.mV[VW] ) )
+    if( is_approx_zero( net_color.mV[VALPHA] ) )
     {
         return success;
     }
 
-    BOOL alpha_mask_specified = FALSE;
+    bool alpha_mask_specified = false;
     param_alpha_list_t::const_iterator iter = mParamAlphaList.begin();
     if( iter != mParamAlphaList.end() )
     {
@@ -1051,7 +1051,7 @@ BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bou
         // However, we can't do this optimization if we have morph masks that need updating.
 /*      if (!mHasMorph)
         {
-            BOOL skip_layer = TRUE;
+            bool skip_layer = true;
 
             while( iter != mParamAlphaList.end() )
             {
@@ -1059,7 +1059,7 @@ BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bou
 
                 if( !param->getSkip() )
                 {
-                    skip_layer = FALSE;
+                    skip_layer = false;
                     break;
                 }
 
@@ -1074,7 +1074,7 @@ BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bou
 
         const bool force_render = true;
         renderMorphMasks(x, y, width, height, net_color, bound_target, force_render);
-        alpha_mask_specified = TRUE;
+        alpha_mask_specified = true;
         gGL.flush();
         gGL.blendFunc(LLRender::BF_DEST_ALPHA, LLRender::BF_ONE_MINUS_DEST_ALPHA);
     }
@@ -1115,7 +1115,7 @@ BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bou
 
                     LLTexUnit::eTextureAddressMode old_mode = tex->getAddressMode();
 
-                    gGL.getTexUnit(0)->bind(tex, TRUE);
+                    gGL.getTexUnit(0)->bind(tex, true);
                     gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_CLAMP);
 
                     gl_rect_2d_simple_tex( width, height );
@@ -1130,7 +1130,7 @@ BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bou
             }
 //          else
 //          {
-//              success = FALSE;
+//              success = false;
 //          }
         }
     }
@@ -1141,13 +1141,13 @@ BOOL LLTexLayer::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bou
             LLGLTexture* tex = LLTexLayerStaticImageList::getInstance()->getTexture(getInfo()->mStaticImageFileName, getInfo()->mStaticImageIsMask);
             if( tex )
             {
-                gGL.getTexUnit(0)->bind(tex, TRUE);
+                gGL.getTexUnit(0)->bind(tex, true);
                 gl_rect_2d_simple_tex( width, height );
                 gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
             }
             else
             {
-                success = FALSE;
+                success = false;
             }
         }
     }
@@ -1199,7 +1199,7 @@ const U8*   LLTexLayer::getAlphaData() const
     return (iter2 == mAlphaCache.end()) ? 0 : iter2->second;
 }
 
-BOOL LLTexLayer::findNetColor(LLColor4* net_color) const
+bool LLTexLayer::findNetColor(LLColor4* net_color) const
 {
     // Color is either:
     //  * one or more color parameters (weighted colors)  (which may make use of a global color or fixed color)
@@ -1213,7 +1213,7 @@ BOOL LLTexLayer::findNetColor(LLColor4* net_color) const
         {
             net_color->setVec( mTexLayerSet->getAvatarAppearance()->getGlobalColor( getInfo()->mGlobalColor ) );
         }
-        else if (getInfo()->mFixedColor.mV[VW])
+        else if (getInfo()->mFixedColor.mV[VALPHA])
         {
             net_color->setVec( getInfo()->mFixedColor );
         }
@@ -1223,29 +1223,29 @@ BOOL LLTexLayer::findNetColor(LLColor4* net_color) const
         }
 
         calculateTexLayerColor(mParamColorList, *net_color);
-        return TRUE;
+        return true;
     }
 
     if( !getGlobalColor().empty() )
     {
         net_color->setVec( mTexLayerSet->getAvatarAppearance()->getGlobalColor( getGlobalColor() ) );
-        return TRUE;
+        return true;
     }
 
-    if( getInfo()->mFixedColor.mV[VW] )
+    if( getInfo()->mFixedColor.mV[VALPHA] )
     {
         net_color->setVec( getInfo()->mFixedColor );
-        return TRUE;
+        return true;
     }
 
     net_color->setToWhite();
 
-    return FALSE; // No need to draw a separate colored polygon
+    return false; // No need to draw a separate colored polygon
 }
 
-BOOL LLTexLayer::blendAlphaTexture(S32 x, S32 y, S32 width, S32 height)
+bool LLTexLayer::blendAlphaTexture(S32 x, S32 y, S32 width, S32 height)
 {
-    BOOL success = TRUE;
+    bool success = true;
 
     gGL.flush();
 
@@ -1255,14 +1255,14 @@ BOOL LLTexLayer::blendAlphaTexture(S32 x, S32 y, S32 width, S32 height)
         if( tex )
         {
             gAlphaMaskProgram.setMinimumAlpha(0.f);
-            gGL.getTexUnit(0)->bind(tex, TRUE);
+            gGL.getTexUnit(0)->bind(tex, true);
             gl_rect_2d_simple_tex( width, height );
             gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
             gAlphaMaskProgram.setMinimumAlpha(0.004f);
         }
         else
         {
-            success = FALSE;
+            success = false;
         }
     }
     else
@@ -1297,7 +1297,7 @@ void LLTexLayer::renderMorphMasks(S32 x, S32 y, S32 width, S32 height, const LLC
         return;
     }
     LL_PROFILE_ZONE_SCOPED;
-    BOOL success = TRUE;
+    bool success = true;
 
     llassert( !mParamAlphaList.empty() );
 
@@ -1342,7 +1342,7 @@ void LLTexLayer::renderMorphMasks(S32 x, S32 y, S32 width, S32 height, const LLC
         {
             LLTexUnit::eTextureAddressMode old_mode = tex->getAddressMode();
 
-            gGL.getTexUnit(0)->bind(tex, TRUE);
+            gGL.getTexUnit(0)->bind(tex, true);
             gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_CLAMP);
 
             gl_rect_2d_simple_tex( width, height );
@@ -1359,7 +1359,7 @@ void LLTexLayer::renderMorphMasks(S32 x, S32 y, S32 width, S32 height, const LLC
         {
             if( (tex->getComponents() == 4) || (tex->getComponents() == 1) )
             {
-                gGL.getTexUnit(0)->bind(tex, TRUE);
+                gGL.getTexUnit(0)->bind(tex, true);
                 gl_rect_2d_simple_tex( width, height );
                 gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
             }
@@ -1373,7 +1373,7 @@ void LLTexLayer::renderMorphMasks(S32 x, S32 y, S32 width, S32 height, const LLC
 
     // Draw a rectangle with the layer color to multiply the alpha by that color's alpha.
     // Note: we're still using gGL.blendFunc( GL_DST_ALPHA, GL_ZERO );
-    if ( !is_approx_equal(layer_color.mV[VW], 1.f) )
+    if ( !is_approx_equal(layer_color.mV[VALPHA], 1.f) )
     {
         gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
         gGL.color4fv(layer_color.mV);
@@ -1482,7 +1482,7 @@ void LLTexLayer::renderMorphMasks(S32 x, S32 y, S32 width, S32 height, const LLC
 
         getTexLayerSet()->getAvatarAppearance()->dirtyMesh();
 
-        mMorphMasksValid = TRUE;
+        mMorphMasksValid = true;
         getTexLayerSet()->applyMorphMask(alpha_data, width, height, 1);
     }
 }
@@ -1515,17 +1515,17 @@ void LLTexLayer::addAlphaMask(U8 *data, S32 originX, S32 originY, S32 width, S32
     }
 }
 
-/*virtual*/ BOOL LLTexLayer::isInvisibleAlphaMask() const
+/*virtual*/ bool LLTexLayer::isInvisibleAlphaMask() const
 {
     if (mLocalTextureObject)
     {
         if (mLocalTextureObject->getID() == IMG_INVISIBLE)
         {
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 LLUUID LLTexLayer::getUUID() const
@@ -1584,7 +1584,7 @@ LLTexLayerTemplate::~LLTexLayerTemplate()
 // setInfo
 //-----------------------------------------------------------------------------
 
-/*virtual*/ BOOL LLTexLayerTemplate::setInfo(const LLTexLayerInfo* info, LLWearable* wearable  )
+/*virtual*/ bool LLTexLayerTemplate::setInfo(const LLTexLayerInfo* info, LLWearable* wearable  )
 {
     return LLTexLayerInterface::setInfo(info, wearable);
 }
@@ -1633,14 +1633,14 @@ LLTexLayer* LLTexLayerTemplate::getLayer(U32 i) const
     return layer;
 }
 
-/*virtual*/ BOOL LLTexLayerTemplate::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target)
+/*virtual*/ bool LLTexLayerTemplate::render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target)
 {
     if(!mInfo)
     {
-        return FALSE ;
+        return false ;
     }
 
-    BOOL success = TRUE;
+    bool success = true;
     updateWearableCache();
     for (LLWearable* wearable : mWearableCache)
     {
@@ -1665,9 +1665,9 @@ LLTexLayer* LLTexLayerTemplate::getLayer(U32 i) const
     return success;
 }
 
-/*virtual*/ BOOL LLTexLayerTemplate::blendAlphaTexture( S32 x, S32 y, S32 width, S32 height) // Multiplies a single alpha texture against the frame buffer
+/*virtual*/ bool LLTexLayerTemplate::blendAlphaTexture( S32 x, S32 y, S32 width, S32 height) // Multiplies a single alpha texture against the frame buffer
 {
-    BOOL success = TRUE;
+    bool success = true;
     U32 num_wearables = updateWearableCache();
     for (U32 i = 0; i < num_wearables; i++)
     {
@@ -1691,7 +1691,7 @@ LLTexLayer* LLTexLayerTemplate::getLayer(U32 i) const
     }
 }
 
-/*virtual*/ void LLTexLayerTemplate::setHasMorph(BOOL newval)
+/*virtual*/ void LLTexLayerTemplate::setHasMorph(bool newval)
 {
     mHasMorph = newval;
     U32 num_wearables = updateWearableCache();
@@ -1718,7 +1718,7 @@ LLTexLayer* LLTexLayerTemplate::getLayer(U32 i) const
     }
 }
 
-/*virtual*/ BOOL LLTexLayerTemplate::isInvisibleAlphaMask() const
+/*virtual*/ bool LLTexLayerTemplate::isInvisibleAlphaMask() const
 {
     U32 num_wearables = updateWearableCache();
     for (U32 i = 0; i < num_wearables; i++)
@@ -1728,12 +1728,12 @@ LLTexLayer* LLTexLayerTemplate::getLayer(U32 i) const
         {
              if (layer->isInvisibleAlphaMask())
              {
-                 return TRUE;
+                 return true;
              }
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 
@@ -1855,7 +1855,7 @@ LLImageTGA* LLTexLayerStaticImageList::getImageTGA(const std::string& file_name)
 
 // Returns a GL Image (without a backing ImageRaw) that contains the decoded data from a tga file named file_name.
 // Caches the result to speed identical subsequent requests.
-LLGLTexture* LLTexLayerStaticImageList::getTexture(const std::string& file_name, BOOL is_mask)
+LLGLTexture* LLTexLayerStaticImageList::getTexture(const std::string& file_name, bool is_mask)
 {
     LL_PROFILE_ZONE_SCOPED;
     LLPointer<LLGLTexture> tex;
@@ -1869,7 +1869,7 @@ LLGLTexture* LLTexLayerStaticImageList::getTexture(const std::string& file_name,
     else
     {
         llassert(gTextureManagerBridgep);
-        tex = gTextureManagerBridgep->getLocalTexture( FALSE );
+        tex = gTextureManagerBridgep->getLocalTexture( false );
         LLPointer<LLImageRaw> image_raw = new LLImageRaw;
         if( loadImageRaw( file_name, image_raw ) )
         {
@@ -1885,7 +1885,7 @@ LLGLTexture* LLTexLayerStaticImageList::getTexture(const std::string& file_name,
 
                 image_raw->copyUnscaledAlphaMask(alpha_image_raw, LLColor4U::black);
             }
-            tex->createGLTexture(0, image_raw, 0, TRUE, LLGLTexture::LOCAL);
+            tex->createGLTexture(0, image_raw, 0, true, LLGLTexture::LOCAL);
 
             gGL.getTexUnit(0)->bind(tex);
             tex->setAddressMode(LLTexUnit::TAM_CLAMP);
@@ -1903,11 +1903,11 @@ LLGLTexture* LLTexLayerStaticImageList::getTexture(const std::string& file_name,
 }
 
 // Reads a .tga file, decodes it, and puts the decoded data in image_raw.
-// Returns TRUE if successful.
-BOOL LLTexLayerStaticImageList::loadImageRaw(const std::string& file_name, LLImageRaw* image_raw)
+// Returns true if successful.
+bool LLTexLayerStaticImageList::loadImageRaw(const std::string& file_name, LLImageRaw* image_raw)
 {
     LL_PROFILE_ZONE_SCOPED;
-    BOOL success = FALSE;
+    bool success = false;
     std::string path;
     path = gDirUtilp->getExpandedFilename(LL_PATH_CHARACTER,file_name);
     LLPointer<LLImageTGA> image_tga = new LLImageTGA( path );
diff --git a/indra/llappearance/lltexlayer.h b/indra/llappearance/lltexlayer.h
index 2b9913f883..876ea6f600 100644
--- a/indra/llappearance/lltexlayer.h
+++ b/indra/llappearance/lltexlayer.h
@@ -65,13 +65,13 @@ public:
     LLTexLayerInterface(const LLTexLayerInterface &layer, LLWearable *wearable);
     virtual ~LLTexLayerInterface() {}
 
-    virtual BOOL            render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target) = 0;
+    virtual bool            render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target) = 0;
     virtual void            deleteCaches() = 0;
-    virtual BOOL            blendAlphaTexture(S32 x, S32 y, S32 width, S32 height) = 0;
-    virtual BOOL            isInvisibleAlphaMask() const = 0;
+    virtual bool            blendAlphaTexture(S32 x, S32 y, S32 width, S32 height) = 0;
+    virtual bool            isInvisibleAlphaMask() const = 0;
 
     const LLTexLayerInfo*   getInfo() const             { return mInfo; }
-    virtual BOOL            setInfo(const LLTexLayerInfo *info, LLWearable* wearable); // sets mInfo, calls initialization functions
+    virtual bool            setInfo(const LLTexLayerInfo *info, LLWearable* wearable); // sets mInfo, calls initialization functions
     LLWearableType::EType   getWearableType() const;
     LLAvatarAppearanceDefines::ETextureIndex    getLocalTextureIndex() const;
 
@@ -80,16 +80,16 @@ public:
     LLTexLayerSet* const    getTexLayerSet()            { return mTexLayerSet; }
 
     void                    invalidateMorphMasks();
-    virtual void            setHasMorph(BOOL newval)    { mHasMorph = newval; }
-    BOOL                    hasMorph() const            { return mHasMorph; }
-    BOOL                    isMorphValid() const        { return mMorphMasksValid; }
+    virtual void            setHasMorph(bool newval)    { mHasMorph = newval; }
+    bool                    hasMorph() const            { return mHasMorph; }
+    bool                    isMorphValid() const        { return mMorphMasksValid; }
 
     void                    requestUpdate();
     virtual void            gatherAlphaMasks(U8 *data, S32 originX, S32 originY, S32 width, S32 height, LLRenderTarget* bound_target) = 0;
-    BOOL                    hasAlphaParams() const      { return !mParamAlphaList.empty(); }
+    bool                    hasAlphaParams() const      { return !mParamAlphaList.empty(); }
 
     ERenderPass             getRenderPass() const;
-    BOOL                    isVisibilityMask() const;
+    bool                    isVisibilityMask() const;
 
     virtual void            asLLSD(LLSD& sd) const {}
 
@@ -100,8 +100,8 @@ protected:
 protected:
     LLTexLayerSet* const    mTexLayerSet;
     const LLTexLayerInfo*   mInfo;
-    BOOL                    mMorphMasksValid;
-    BOOL                    mHasMorph;
+    bool                    mMorphMasksValid;
+    bool                    mHasMorph;
 
     // Layers can have either mParamColorList, mGlobalColor, or mFixedColor.  They are looked for in that order.
     param_color_list_t      mParamColorList;
@@ -121,13 +121,13 @@ public:
     LLTexLayerTemplate(LLTexLayerSet* const layer_set, LLAvatarAppearance* const appearance);
     LLTexLayerTemplate(const LLTexLayerTemplate &layer);
     /*virtual*/ ~LLTexLayerTemplate();
-    /*virtual*/ BOOL        render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target);
-    /*virtual*/ BOOL        setInfo(const LLTexLayerInfo *info, LLWearable* wearable); // This sets mInfo and calls initialization functions
-    /*virtual*/ BOOL        blendAlphaTexture(S32 x, S32 y, S32 width, S32 height); // Multiplies a single alpha texture against the frame buffer
+    /*virtual*/ bool        render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target);
+    /*virtual*/ bool        setInfo(const LLTexLayerInfo *info, LLWearable* wearable); // This sets mInfo and calls initialization functions
+    /*virtual*/ bool        blendAlphaTexture(S32 x, S32 y, S32 width, S32 height); // Multiplies a single alpha texture against the frame buffer
     /*virtual*/ void        gatherAlphaMasks(U8 *data, S32 originX, S32 originY, S32 width, S32 height, LLRenderTarget* bound_target);
-    /*virtual*/ void        setHasMorph(BOOL newval);
+    /*virtual*/ void        setHasMorph(bool newval);
     /*virtual*/ void        deleteCaches();
-    /*virtual*/ BOOL        isInvisibleAlphaMask() const;
+    /*virtual*/ bool        isInvisibleAlphaMask() const;
 protected:
     U32                     updateWearableCache() const;
     LLTexLayer*             getLayer(U32 i) const;
@@ -151,18 +151,18 @@ public:
     LLTexLayer(const LLTexLayerTemplate &layer_template, LLLocalTextureObject *lto, LLWearable *wearable);
     /*virtual*/ ~LLTexLayer();
 
-    /*virtual*/ BOOL        setInfo(const LLTexLayerInfo *info, LLWearable* wearable); // This sets mInfo and calls initialization functions
-    /*virtual*/ BOOL        render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target);
+    /*virtual*/ bool        setInfo(const LLTexLayerInfo *info, LLWearable* wearable); // This sets mInfo and calls initialization functions
+    /*virtual*/ bool        render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target);
 
     /*virtual*/ void        deleteCaches();
     const U8*               getAlphaData() const;
 
-    BOOL                    findNetColor(LLColor4* color) const;
-    /*virtual*/ BOOL        blendAlphaTexture(S32 x, S32 y, S32 width, S32 height); // Multiplies a single alpha texture against the frame buffer
+    bool                    findNetColor(LLColor4* color) const;
+    /*virtual*/ bool        blendAlphaTexture(S32 x, S32 y, S32 width, S32 height); // Multiplies a single alpha texture against the frame buffer
     /*virtual*/ void        gatherAlphaMasks(U8 *data, S32 originX, S32 originY, S32 width, S32 height, LLRenderTarget* bound_target);
     void                    renderMorphMasks(S32 x, S32 y, S32 width, S32 height, const LLColor4 &layer_color, LLRenderTarget* bound_target, bool force_render);
     void                    addAlphaMask(U8 *data, S32 originX, S32 originY, S32 width, S32 height, LLRenderTarget* bound_target);
-    /*virtual*/ BOOL        isInvisibleAlphaMask() const;
+    /*virtual*/ bool        isInvisibleAlphaMask() const;
 
     void                    setLTO(LLLocalTextureObject *lto)   { mLocalTextureObject = lto; }
     LLLocalTextureObject*   getLTO()                            { return mLocalTextureObject; }
@@ -197,14 +197,14 @@ public:
     void                        gatherMorphMaskAlpha(U8 *data, S32 origin_x, S32 origin_y, S32 width, S32 height, LLRenderTarget* bound_target);
 
     const LLTexLayerSetInfo*    getInfo() const             { return mInfo; }
-    BOOL                        setInfo(const LLTexLayerSetInfo *info); // This sets mInfo and calls initialization functions
+    bool                        setInfo(const LLTexLayerSetInfo *info); // This sets mInfo and calls initialization functions
 
-    BOOL                        render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target = nullptr);
+    bool                        render(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target = nullptr);
     void                        renderAlphaMaskTextures(S32 x, S32 y, S32 width, S32 height, LLRenderTarget* bound_target = nullptr, bool forceClear = false);
 
-    BOOL                        isBodyRegion(const std::string& region) const;
-    void                        applyMorphMask(U8* tex_data, S32 width, S32 height, S32 num_components);
-    BOOL                        isMorphValid() const;
+    bool                        isBodyRegion(const std::string& region) const;
+    void                        applyMorphMask(const U8* tex_data, S32 width, S32 height, S32 num_components);
+    bool                        isMorphValid() const;
     virtual void                requestUpdate() = 0;
     void                        invalidateMorphMasks();
     void                        deleteCaches();
@@ -213,12 +213,12 @@ public:
 
     LLAvatarAppearance*         getAvatarAppearance()   const       { return mAvatarAppearance; }
     const std::string           getBodyRegionName() const;
-    BOOL                        hasComposite() const        { return (mComposite.notNull()); }
+    bool                        hasComposite() const        { return (mComposite.notNull()); }
     LLAvatarAppearanceDefines::EBakedTextureIndex getBakedTexIndex() const { return mBakedTexIndex; }
     void                        setBakedTexIndex(LLAvatarAppearanceDefines::EBakedTextureIndex index) { mBakedTexIndex = index; }
-    BOOL                        isVisible() const           { return mIsVisible; }
+    bool                        isVisible() const           { return mIsVisible; }
 
-    static BOOL                 sHasCaches;
+    static bool                 sHasCaches;
 
 protected:
     typedef std::vector<LLTexLayerInterface *> layer_list_t;
@@ -226,7 +226,7 @@ protected:
     layer_list_t                mMaskLayerList;
     LLPointer<LLTexLayerSetBuffer>  mComposite;
     LLAvatarAppearance* const   mAvatarAppearance; // note: backlink only; don't make this an LLPointer.
-    BOOL                        mIsVisible;
+    bool                        mIsVisible;
 
     LLAvatarAppearanceDefines::EBakedTextureIndex mBakedTexIndex;
     const LLTexLayerSetInfo*    mInfo;
@@ -243,7 +243,7 @@ class LLTexLayerSetInfo
 public:
     LLTexLayerSetInfo();
     ~LLTexLayerSetInfo();
-    BOOL parseXml(LLXmlTreeNode* node);
+    bool parseXml(LLXmlTreeNode* node);
     void createVisualParams(LLAvatarAppearance *appearance);
     S32 getWidth() const { return mWidth; }
     S32 getHeight() const { return mHeight; }
@@ -252,7 +252,7 @@ protected:
     S32                     mWidth;
     S32                     mHeight;
     std::string             mStaticAlphaFileName;
-    BOOL                    mClearAlpha; // Set alpha to 1 for this layerset (if there is no mStaticAlphaFileName)
+    bool                    mClearAlpha; // Set alpha to 1 for this layerset (if there is no mStaticAlphaFileName)
     typedef std::vector<LLTexLayerInfo*> layer_info_list_t;
     layer_info_list_t       mLayerInfoList;
 };
@@ -274,13 +274,13 @@ protected:
     void                    pushProjection() const;
     void                    popProjection() const;
     virtual void            preRenderTexLayerSet();
-    virtual void            midRenderTexLayerSet(BOOL success) {}
-    virtual void            postRenderTexLayerSet(BOOL success);
+    virtual void            midRenderTexLayerSet(bool success) {}
+    virtual void            postRenderTexLayerSet(bool success);
     virtual S32             getCompositeOriginX() const = 0;
     virtual S32             getCompositeOriginY() const = 0;
     virtual S32             getCompositeWidth() const = 0;
     virtual S32             getCompositeHeight() const = 0;
-    BOOL                    renderTexLayerSet(LLRenderTarget* bound_target);
+    bool                    renderTexLayerSet(LLRenderTarget* bound_target);
 
     LLTexLayerSet* const    mTexLayerSet;
 };
@@ -294,12 +294,12 @@ class LLTexLayerStaticImageList : public LLSingleton<LLTexLayerStaticImageList>
     LLSINGLETON(LLTexLayerStaticImageList);
     ~LLTexLayerStaticImageList();
 public:
-    LLGLTexture*        getTexture(const std::string& file_name, BOOL is_mask);
+    LLGLTexture*        getTexture(const std::string& file_name, bool is_mask);
     LLImageTGA*         getImageTGA(const std::string& file_name);
     void                deleteCachedImages();
     void                dumpByteCount() const;
 protected:
-    BOOL                loadImageRaw(const std::string& file_name, LLImageRaw* image_raw);
+    bool                loadImageRaw(const std::string& file_name, LLImageRaw* image_raw);
 private:
     LLStringTable       mImageNames;
     typedef std::map<const char*, LLPointer<LLGLTexture> > texture_map_t;
diff --git a/indra/llappearance/lltexlayerparams.cpp b/indra/llappearance/lltexlayerparams.cpp
index 2e7495b55f..30551c115d 100644
--- a/indra/llappearance/lltexlayerparams.cpp
+++ b/indra/llappearance/lltexlayerparams.cpp
@@ -69,7 +69,7 @@ LLTexLayerParam::LLTexLayerParam(const LLTexLayerParam& pOther)
 {
 }
 
-BOOL LLTexLayerParam::setInfo(LLViewerVisualParamInfo *info, BOOL add_to_appearance)
+bool LLTexLayerParam::setInfo(LLViewerVisualParamInfo *info, bool add_to_appearance)
 {
     LLViewerVisualParam::setInfo(info);
 
@@ -79,7 +79,7 @@ BOOL LLTexLayerParam::setInfo(LLViewerVisualParamInfo *info, BOOL add_to_appeara
         this->setParamLocation(mAvatarAppearance->isSelf() ? LOC_AV_SELF : LOC_AV_OTHER);
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -123,8 +123,8 @@ LLTexLayerParamAlpha::LLTexLayerParamAlpha(LLTexLayerInterface* layer)
     mCachedProcessedTexture(NULL),
     mStaticImageTGA(),
     mStaticImageRaw(),
-    mNeedsCreateTexture(FALSE),
-    mStaticImageInvalid(FALSE),
+    mNeedsCreateTexture(false),
+    mStaticImageInvalid(false),
     mAvgDistortionVec(1.f, 1.f, 1.f),
     mCachedEffectiveWeight(0.f)
 {
@@ -136,8 +136,8 @@ LLTexLayerParamAlpha::LLTexLayerParamAlpha(LLAvatarAppearance* appearance)
     mCachedProcessedTexture(NULL),
     mStaticImageTGA(),
     mStaticImageRaw(),
-    mNeedsCreateTexture(FALSE),
-    mStaticImageInvalid(FALSE),
+    mNeedsCreateTexture(false),
+    mStaticImageInvalid(false),
     mAvgDistortionVec(1.f, 1.f, 1.f),
     mCachedEffectiveWeight(0.f)
 {
@@ -173,10 +173,10 @@ void LLTexLayerParamAlpha::deleteCaches()
     mStaticImageTGA = NULL; // deletes image
     mCachedProcessedTexture = NULL;
     mStaticImageRaw = NULL;
-    mNeedsCreateTexture = FALSE;
+    mNeedsCreateTexture = false;
 }
 
-BOOL LLTexLayerParamAlpha::getMultiplyBlend() const
+bool LLTexLayerParamAlpha::getMultiplyBlend() const
 {
     return ((LLTexLayerParamAlphaInfo *)getInfo())->mMultiplyBlend;
 }
@@ -216,7 +216,7 @@ void LLTexLayerParamAlpha::setAnimationTarget(F32 target_value)
 
     mTargetWeight = target_value;
     setWeight(target_value);
-    mIsAnimating = TRUE;
+    mIsAnimating = true;
     if (mNext)
     {
         mNext->setAnimationTarget(target_value);
@@ -231,11 +231,11 @@ void LLTexLayerParamAlpha::animate(F32 delta)
     }
 }
 
-BOOL LLTexLayerParamAlpha::getSkip() const
+bool LLTexLayerParamAlpha::getSkip() const
 {
     if (!mTexLayer)
     {
-        return TRUE;
+        return true;
     }
 
     const LLAvatarAppearance *appearance = mTexLayer->getTexLayerSet()->getAvatarAppearance();
@@ -245,24 +245,24 @@ BOOL LLTexLayerParamAlpha::getSkip() const
         F32 effective_weight = (appearance->getSex() & getSex()) ? mCurWeight : getDefaultWeight();
         if (is_approx_zero(effective_weight))
         {
-            return TRUE;
+            return true;
         }
     }
 
     LLWearableType::EType type = (LLWearableType::EType)getWearableType();
     if ((type != LLWearableType::WT_INVALID) && !appearance->isWearingWearableType(type))
     {
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 
-BOOL LLTexLayerParamAlpha::render(S32 x, S32 y, S32 width, S32 height)
+bool LLTexLayerParamAlpha::render(S32 x, S32 y, S32 width, S32 height)
 {
     LL_PROFILE_ZONE_SCOPED;
-    BOOL success = TRUE;
+    bool success = true;
 
     if (!mTexLayer)
     {
@@ -270,7 +270,7 @@ BOOL LLTexLayerParamAlpha::render(S32 x, S32 y, S32 width, S32 height)
     }
 
     F32 effective_weight = (mTexLayer->getTexLayerSet()->getAvatarAppearance()->getSex() & getSex()) ? mCurWeight : getDefaultWeight();
-    BOOL weight_changed = effective_weight != mCachedEffectiveWeight;
+    bool weight_changed = effective_weight != mCachedEffectiveWeight;
     if (getSkip())
     {
         return success;
@@ -294,13 +294,13 @@ BOOL LLTexLayerParamAlpha::render(S32 x, S32 y, S32 width, S32 height)
             // Don't load the image file until we actually need it the first time.  Like now.
             mStaticImageTGA = LLTexLayerStaticImageList::getInstance()->getImageTGA(info->mStaticImageFileName);
             // We now have something in one of our caches
-            LLTexLayerSet::sHasCaches |= mStaticImageTGA.notNull() ? TRUE : FALSE;
+            LLTexLayerSet::sHasCaches |= mStaticImageTGA.notNull();
 
             if (mStaticImageTGA.isNull())
             {
                 LL_WARNS() << "Unable to load static file: " << info->mStaticImageFileName << LL_ENDL;
-                mStaticImageInvalid = TRUE; // don't try again.
-                return FALSE;
+                mStaticImageInvalid = true; // don't try again.
+                return false;
             }
         }
 
@@ -316,10 +316,10 @@ BOOL LLTexLayerParamAlpha::render(S32 x, S32 y, S32 width, S32 height)
             if (!mCachedProcessedTexture)
             {
                 llassert(gTextureManagerBridgep);
-                mCachedProcessedTexture = gTextureManagerBridgep->getLocalTexture(image_tga_width, image_tga_height, 1, FALSE);
+                mCachedProcessedTexture = gTextureManagerBridgep->getLocalTexture(image_tga_width, image_tga_height, 1, false);
 
                 // We now have something in one of our caches
-                LLTexLayerSet::sHasCaches |= mCachedProcessedTexture ? TRUE : FALSE;
+                LLTexLayerSet::sHasCaches |= mCachedProcessedTexture.notNull();
 
                 mCachedProcessedTexture->setExplicitFormat(GL_ALPHA8, GL_ALPHA);
             }
@@ -328,7 +328,7 @@ BOOL LLTexLayerParamAlpha::render(S32 x, S32 y, S32 width, S32 height)
             mStaticImageRaw = NULL;
             mStaticImageRaw = new LLImageRaw;
             mStaticImageTGA->decodeAndProcess(mStaticImageRaw, info->mDomain, effective_weight);
-            mNeedsCreateTexture = TRUE;
+            mNeedsCreateTexture = true;
             LL_DEBUGS() << "Built Cached Alpha: " << info->mStaticImageFileName << ": (" << mStaticImageRaw->getWidth() << ", " << mStaticImageRaw->getHeight() << ") " << "Domain: " << info->mDomain << " Weight: " << effective_weight << LL_ENDL;
         }
 
@@ -339,7 +339,7 @@ BOOL LLTexLayerParamAlpha::render(S32 x, S32 y, S32 width, S32 height)
                 if (mNeedsCreateTexture)
                 {
                     mCachedProcessedTexture->createGLTexture(0, mStaticImageRaw);
-                    mNeedsCreateTexture = FALSE;
+                    mNeedsCreateTexture = false;
                     gGL.getTexUnit(0)->bind(mCachedProcessedTexture);
                     mCachedProcessedTexture->setAddressMode(LLTexUnit::TAM_CLAMP);
                 }
@@ -372,23 +372,23 @@ BOOL LLTexLayerParamAlpha::render(S32 x, S32 y, S32 width, S32 height)
 // LLTexLayerParamAlphaInfo
 //-----------------------------------------------------------------------------
 LLTexLayerParamAlphaInfo::LLTexLayerParamAlphaInfo() :
-    mMultiplyBlend(FALSE),
-    mSkipIfZeroWeight(FALSE),
+    mMultiplyBlend(false),
+    mSkipIfZeroWeight(false),
     mDomain(0.f)
 {
 }
 
-BOOL LLTexLayerParamAlphaInfo::parseXml(LLXmlTreeNode* node)
+bool LLTexLayerParamAlphaInfo::parseXml(LLXmlTreeNode* node)
 {
     llassert(node->hasName("param") && node->getChildByName("param_alpha"));
 
     if (!LLViewerVisualParamInfo::parseXml(node))
-        return FALSE;
+        return false;
 
     LLXmlTreeNode* param_alpha_node = node->getChildByName("param_alpha");
     if (!param_alpha_node)
     {
-        return FALSE;
+        return false;
     }
 
     static LLStdStringHandle tga_file_string = LLXmlTree::addAttributeString("tga_file");
@@ -410,7 +410,7 @@ BOOL LLTexLayerParamAlphaInfo::parseXml(LLXmlTreeNode* node)
     static LLStdStringHandle domain_string = LLXmlTree::addAttributeString("domain");
     param_alpha_node->getFastAttributeF32(domain_string, mDomain);
 
-    return TRUE;
+    return true;
 }
 
 
@@ -464,10 +464,10 @@ LLColor4 LLTexLayerParamColor::getNetColor() const
         F32 weight = scaled_weight - index_start;
         const LLColor4 *start = &info->mColors[ index_start ];
         const LLColor4 *end   = &info->mColors[ index_end ];
-        return LLColor4((1.f - weight) * start->mV[VX] + weight * end->mV[VX],
-                        (1.f - weight) * start->mV[VY] + weight * end->mV[VY],
-                        (1.f - weight) * start->mV[VZ] + weight * end->mV[VZ],
-                        (1.f - weight) * start->mV[VW] + weight * end->mV[VW]);
+        return LLColor4((1.f - weight) * start->mV[VRED] + weight * end->mV[VRED],
+                        (1.f - weight) * start->mV[VGREEN] + weight * end->mV[VGREEN],
+                        (1.f - weight) * start->mV[VBLUE] + weight * end->mV[VBLUE],
+                        (1.f - weight) * start->mV[VALPHA] + weight * end->mV[VALPHA]);
     }
 }
 
@@ -514,7 +514,7 @@ void LLTexLayerParamColor::setAnimationTarget(F32 target_value)
     // set value first then set interpolating flag to ignore further updates
     mTargetWeight = target_value;
     setWeight(target_value);
-    mIsAnimating = TRUE;
+    mIsAnimating = true;
     if (mNext)
     {
         mNext->setAnimationTarget(target_value);
@@ -538,17 +538,17 @@ LLTexLayerParamColorInfo::LLTexLayerParamColorInfo() :
 {
 }
 
-BOOL LLTexLayerParamColorInfo::parseXml(LLXmlTreeNode *node)
+bool LLTexLayerParamColorInfo::parseXml(LLXmlTreeNode *node)
 {
     llassert(node->hasName("param") && node->getChildByName("param_color"));
 
     if (!LLViewerVisualParamInfo::parseXml(node))
-        return FALSE;
+        return false;
 
     LLXmlTreeNode* param_color_node = node->getChildByName("param_color");
     if (!param_color_node)
     {
-        return FALSE;
+        return false;
     }
 
     std::string op_string;
@@ -581,14 +581,14 @@ BOOL LLTexLayerParamColorInfo::parseXml(LLXmlTreeNode *node)
     if (!mNumColors)
     {
         LL_WARNS() << "<param_color> is missing <value> sub-elements" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if ((mOperation == LLTexLayerParamColor::OP_BLEND) && (mNumColors != 1))
     {
         LL_WARNS() << "<param_color> with operation\"blend\" must have exactly one <value>" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
diff --git a/indra/llappearance/lltexlayerparams.h b/indra/llappearance/lltexlayerparams.h
index 54264c119a..5e785e4f3e 100644
--- a/indra/llappearance/lltexlayerparams.h
+++ b/indra/llappearance/lltexlayerparams.h
@@ -48,7 +48,7 @@ class LLTexLayerParam : public LLViewerVisualParam
 public:
     LLTexLayerParam(LLTexLayerInterface *layer);
     LLTexLayerParam(LLAvatarAppearance *appearance);
-    /*virtual*/ BOOL setInfo(LLViewerVisualParamInfo *info, BOOL add_to_appearance);
+    /*virtual*/ bool setInfo(LLViewerVisualParamInfo *info, bool add_to_appearance);
     /*virtual*/ LLViewerVisualParam* cloneParam(LLWearable* wearable) const = 0;
 
 protected:
@@ -74,7 +74,7 @@ public:
     /*virtual*/ LLViewerVisualParam* cloneParam(LLWearable* wearable = NULL) const;
 
     // LLVisualParam Virtual functions
-    ///*virtual*/ BOOL      parseData(LLXmlTreeNode* node);
+    ///*virtual*/ bool      parseData(LLXmlTreeNode* node);
     /*virtual*/ void        apply( ESex avatar_sex ) {}
     /*virtual*/ void        setWeight(F32 weight);
     /*virtual*/ void        setAnimationTarget(F32 target_value);
@@ -89,10 +89,10 @@ public:
     /*virtual*/ const LLVector4a*   getNextDistortion(U32 *index, LLPolyMesh **poly_mesh)   { index = 0; poly_mesh = NULL; return NULL;};
 
     // New functions
-    BOOL                    render( S32 x, S32 y, S32 width, S32 height );
-    BOOL                    getSkip() const;
+    bool                    render( S32 x, S32 y, S32 width, S32 height );
+    bool                    getSkip() const;
     void                    deleteCaches();
-    BOOL                    getMultiplyBlend() const;
+    bool                    getMultiplyBlend() const;
 
 private:
     LLTexLayerParamAlpha(const LLTexLayerParamAlpha& pOther);
@@ -100,8 +100,8 @@ private:
     LLPointer<LLGLTexture>  mCachedProcessedTexture;
     LLPointer<LLImageTGA>   mStaticImageTGA;
     LLPointer<LLImageRaw>   mStaticImageRaw;
-    std::atomic<BOOL>       mNeedsCreateTexture;
-    BOOL                    mStaticImageInvalid;
+    std::atomic<bool>       mNeedsCreateTexture;
+    bool                    mStaticImageInvalid;
     LL_ALIGN_16(LLVector4a              mAvgDistortionVec);
     F32                     mCachedEffectiveWeight;
 
@@ -120,12 +120,12 @@ public:
     LLTexLayerParamAlphaInfo();
     /*virtual*/ ~LLTexLayerParamAlphaInfo() {};
 
-    /*virtual*/ BOOL parseXml(LLXmlTreeNode* node);
+    /*virtual*/ bool parseXml(LLXmlTreeNode* node);
 
 private:
     std::string             mStaticImageFileName;
-    BOOL                    mMultiplyBlend;
-    BOOL                    mSkipIfZeroWeight;
+    bool                    mMultiplyBlend;
+    bool                    mSkipIfZeroWeight;
     F32                     mDomain;
 };
 //
@@ -157,7 +157,7 @@ public:
     /*virtual*/ LLViewerVisualParam* cloneParam(LLWearable* wearable = NULL) const;
 
     // LLVisualParam Virtual functions
-    ///*virtual*/ BOOL          parseData(LLXmlTreeNode* node);
+    ///*virtual*/ bool          parseData(LLXmlTreeNode* node);
     /*virtual*/ void            apply( ESex avatar_sex ) {}
     /*virtual*/ void            setWeight(F32 weight);
     /*virtual*/ void            setAnimationTarget(F32 target_value);
@@ -189,7 +189,7 @@ class LLTexLayerParamColorInfo : public LLViewerVisualParamInfo
 public:
     LLTexLayerParamColorInfo();
     virtual ~LLTexLayerParamColorInfo() {};
-    BOOL parseXml( LLXmlTreeNode* node );
+    bool parseXml( LLXmlTreeNode* node );
     LLTexLayerParamColor::EColorOperation getOperation() const { return mOperation; }
 private:
     enum { MAX_COLOR_VALUES = 20 };
diff --git a/indra/llappearance/llviewervisualparam.cpp b/indra/llappearance/llviewervisualparam.cpp
index 2cc072fd13..00d6383ad0 100644
--- a/indra/llappearance/llviewervisualparam.cpp
+++ b/indra/llappearance/llviewervisualparam.cpp
@@ -39,12 +39,12 @@
 LLViewerVisualParamInfo::LLViewerVisualParamInfo()
     :
     mWearableType( LLWearableType::WT_INVALID ),
-    mCrossWearable(FALSE),
+    mCrossWearable(false),
     mCamDist( 0.5f ),
     mCamAngle( 0.f ),
     mCamElevation( 0.f ),
     mEditGroupDisplayOrder( 0 ),
-    mShowSimple(FALSE),
+    mShowSimple(false),
     mSimpleMin(0.f),
     mSimpleMax(100.f)
 {
@@ -57,12 +57,12 @@ LLViewerVisualParamInfo::~LLViewerVisualParamInfo()
 //-----------------------------------------------------------------------------
 // parseXml()
 //-----------------------------------------------------------------------------
-BOOL LLViewerVisualParamInfo::parseXml(LLXmlTreeNode *node)
+bool LLViewerVisualParamInfo::parseXml(LLXmlTreeNode *node)
 {
     llassert( node->hasName( "param" ) );
 
     if (!LLVisualParamInfo::parseXml(node))
-        return FALSE;
+        return false;
 
     // VIEWER SPECIFIC PARAMS
 
@@ -82,7 +82,7 @@ BOOL LLViewerVisualParamInfo::parseXml(LLXmlTreeNode *node)
     static LLStdStringHandle cross_wearable_string = LLXmlTree::addAttributeString("cross_wearable");
     if (!node->getFastAttributeBOOL(cross_wearable_string, mCrossWearable))
     {
-        mCrossWearable = FALSE;
+        mCrossWearable = false;
     }
 
     // Optional camera offsets from the current joint center.  Used for generating "hints" (thumbnails).
@@ -107,7 +107,7 @@ BOOL LLViewerVisualParamInfo::parseXml(LLXmlTreeNode *node)
 
     params_loaded++;
 
-    return TRUE;
+    return true;
 }
 
 /*virtual*/ void LLViewerVisualParamInfo::toStream(std::ostream &out)
@@ -146,15 +146,15 @@ LLViewerVisualParam::~LLViewerVisualParam()
 // setInfo()
 //-----------------------------------------------------------------------------
 
-BOOL LLViewerVisualParam::setInfo(LLViewerVisualParamInfo *info)
+bool LLViewerVisualParam::setInfo(LLViewerVisualParamInfo *info)
 {
     llassert(mInfo == NULL);
     if (info->mID < 0)
-        return FALSE;
+        return false;
     mInfo = info;
     mID = info->mID;
     setWeight(getDefaultWeight());
-    return TRUE;
+    return true;
 }
 
 /*
@@ -166,14 +166,14 @@ BOOL LLViewerVisualParam::setInfo(LLViewerVisualParamInfo *info)
 //-----------------------------------------------------------------------------
 // parseData()
 //-----------------------------------------------------------------------------
-BOOL LLViewerVisualParam::parseData(LLXmlTreeNode *node)
+bool LLViewerVisualParam::parseData(LLXmlTreeNode *node)
 {
     LLViewerVisualParamInfo* info = new LLViewerVisualParamInfo;
 
     info->parseXml(node);
     if (!setInfo(info))
-        return FALSE;
+        return false;
 
-    return TRUE;
+    return true;
 }
 */
diff --git a/indra/llappearance/llviewervisualparam.h b/indra/llappearance/llviewervisualparam.h
index 7e332875f5..b79983df8e 100644
--- a/indra/llappearance/llviewervisualparam.h
+++ b/indra/llappearance/llviewervisualparam.h
@@ -43,19 +43,19 @@ public:
     LLViewerVisualParamInfo();
     /*virtual*/ ~LLViewerVisualParamInfo();
 
-    /*virtual*/ BOOL parseXml(LLXmlTreeNode* node);
+    /*virtual*/ bool parseXml(LLXmlTreeNode* node);
 
     /*virtual*/ void toStream(std::ostream &out);
 
 protected:
     S32         mWearableType;
-    BOOL        mCrossWearable;
+    bool        mCrossWearable;
     std::string mEditGroup;
     F32         mCamDist;
     F32         mCamAngle;      // degrees
     F32         mCamElevation;
     F32         mEditGroupDisplayOrder;
-    BOOL        mShowSimple;    // show edit controls when in "simple ui" mode?
+    bool        mShowSimple;    // show edit controls when in "simple ui" mode?
     F32         mSimpleMin;     // when in simple UI, apply this minimum, range 0.f to 100.f
     F32         mSimpleMax;     // when in simple UI, apply this maximum, range 0.f to 100.f
 };
@@ -75,12 +75,12 @@ public:
     // Special: These functions are overridden by child classes
     LLViewerVisualParamInfo     *getInfo() const { return (LLViewerVisualParamInfo*)mInfo; };
     //   This sets mInfo and calls initialization functions
-    BOOL                        setInfo(LLViewerVisualParamInfo *info);
+    bool                        setInfo(LLViewerVisualParamInfo *info);
 
     virtual LLViewerVisualParam* cloneParam(LLWearable* wearable) const = 0;
 
     // LLVisualParam Virtual functions
-    ///*virtual*/ BOOL          parseData(LLXmlTreeNode* node);
+    ///*virtual*/ bool          parseData(LLXmlTreeNode* node);
 
     // New Virtual functions
     virtual F32                 getTotalDistortion() = 0;
@@ -99,11 +99,11 @@ public:
     F32                 getCameraAngle() const      { return getInfo()->mCamAngle; }  // degrees
     F32                 getCameraElevation() const  { return getInfo()->mCamElevation; }
 
-    BOOL                getShowSimple() const       { return getInfo()->mShowSimple; }
+    bool                getShowSimple() const       { return getInfo()->mShowSimple; }
     F32                 getSimpleMin() const        { return getInfo()->mSimpleMin; }
     F32                 getSimpleMax() const        { return getInfo()->mSimpleMax; }
 
-    BOOL                getCrossWearable() const    { return getInfo()->mCrossWearable; }
+    bool                getCrossWearable() const    { return getInfo()->mCrossWearable; }
 
 protected:
     LLViewerVisualParam(const LLViewerVisualParam& pOther);
diff --git a/indra/llappearance/llwearable.cpp b/indra/llappearance/llwearable.cpp
index f04bae3d62..a7e5292fed 100644
--- a/indra/llappearance/llwearable.cpp
+++ b/indra/llappearance/llwearable.cpp
@@ -86,16 +86,16 @@ LLAssetType::EType LLWearable::getAssetType() const
     return LLWearableType::getInstance()->getAssetType(mType);
 }
 
-BOOL LLWearable::exportFile(const std::string& filename) const
+bool LLWearable::exportFile(const std::string& filename) const
 {
     llofstream ofs(filename.c_str(), std::ios_base::out | std::ios_base::trunc | std::ios_base::binary);
     return ofs.is_open() && exportStream(ofs);
 }
 
 // virtual
-BOOL LLWearable::exportStream( std::ostream& output_stream ) const
+bool LLWearable::exportStream( std::ostream& output_stream ) const
 {
-    if (!output_stream.good()) return FALSE;
+    if (!output_stream.good()) return false;
 
     // header and version
     output_stream << "LLWearable version " << mDefinitionVersion  << "\n";
@@ -107,13 +107,13 @@ BOOL LLWearable::exportStream( std::ostream& output_stream ) const
     // permissions
     if( !mPermissions.exportLegacyStream( output_stream ) )
     {
-        return FALSE;
+        return false;
     }
 
     // sale info
     if( !mSaleInfo.exportLegacyStream( output_stream ) )
     {
-        return FALSE;
+        return false;
     }
 
     // wearable type
@@ -139,7 +139,7 @@ BOOL LLWearable::exportStream( std::ostream& output_stream ) const
         const LLUUID& image_id = te_pair.second->getID();
         output_stream << te << " " << image_id << "\n";
     }
-    return TRUE;
+    return true;
 }
 
 void LLWearable::createVisualParams(LLAvatarAppearance *avatarp)
@@ -307,7 +307,7 @@ LLWearable::EImportResult LLWearable::importStream( std::istream& input_stream,
     // permissions. Thus, we read that out, and fix legacy
     // objects. It's possible this op would fail, but it should pick
     // up the vast majority of the tasks.
-    BOOL has_perm_mask = FALSE;
+    bool has_perm_mask = false;
     U32 perm_mask = 0;
     if( !mSaleInfo.importLegacyStream(input_stream, has_perm_mask, perm_mask) )
     {
@@ -469,11 +469,11 @@ LLWearable::EImportResult LLWearable::importStream( std::istream& input_stream,
     return LLWearable::SUCCESS;
 }
 
-BOOL LLWearable::getNextPopulatedLine(std::istream& input_stream, char* buffer, U32 buffer_size)
+bool LLWearable::getNextPopulatedLine(std::istream& input_stream, char* buffer, U32 buffer_size)
 {
     if (!input_stream.good())
     {
-        return FALSE;
+        return false;
     }
 
     do
@@ -636,7 +636,7 @@ void LLWearable::addVisualParam(LLVisualParam *param)
     {
         delete mVisualParamIndexMap[param->getID()];
     }
-    param->setIsDummy(FALSE);
+    param->setIsDummy(false);
     param->setParamLocation(LOC_WEARABLE);
     mVisualParamIndexMap[param->getID()] = param;
     mSavedVisualParamMap[param->getID()] = param->getDefaultWeight();
@@ -744,7 +744,7 @@ void LLWearable::writeToAvatar(LLAvatarAppearance* avatarp)
 std::string terse_F32_to_string(F32 f)
 {
     std::string r = llformat("%.2f", f);
-    S32 len = r.length();
+    auto len = r.length();
 
     // "1.20"  -> "1.2"
     // "24.00" -> "24."
diff --git a/indra/llappearance/llwearable.h b/indra/llappearance/llwearable.h
index 22075e9d9b..c76e836a46 100644
--- a/indra/llappearance/llwearable.h
+++ b/indra/llappearance/llwearable.h
@@ -80,9 +80,9 @@ public:
         SUCCESS,
         BAD_HEADER
     };
-    BOOL                exportFile(const std::string& filename) const;
+    bool                exportFile(const std::string& filename) const;
     EImportResult       importFile(const std::string& filename, LLAvatarAppearance* avatarp );
-    virtual BOOL                exportStream( std::ostream& output_stream ) const;
+    virtual bool                exportStream( std::ostream& output_stream ) const;
     virtual EImportResult       importStream( std::istream& input_stream, LLAvatarAppearance* avatarp );
 
     static void         setCurrentDefinitionVersion( S32 version ) { LLWearable::sCurrentDefinitionVersion = version; }
@@ -118,7 +118,7 @@ protected:
     void                destroyTextures();
     void                createVisualParams(LLAvatarAppearance *avatarp);
     void                createLayers(S32 te, LLAvatarAppearance *avatarp);
-    BOOL                getNextPopulatedLine(std::istream& input_stream, char* buffer, U32 buffer_size);
+    bool                getNextPopulatedLine(std::istream& input_stream, char* buffer, U32 buffer_size);
 
     static S32          sCurrentDefinitionVersion;  // Depends on the current state of the avatar_lad.xml.
     S32                 mDefinitionVersion;         // Depends on the state of the avatar_lad.xml when this asset was created.
diff --git a/indra/llappearance/llwearabledata.cpp b/indra/llappearance/llwearabledata.cpp
index 55f8db8bda..7598ed67f3 100644
--- a/indra/llappearance/llwearabledata.cpp
+++ b/indra/llappearance/llwearabledata.cpp
@@ -86,7 +86,7 @@ void LLWearableData::setWearable(const LLWearableType::EType type, U32 index, LL
     {
         wearable_vec[index] = wearable;
         old_wearable->setUpdated();
-        const BOOL removed = FALSE;
+        const bool removed = false;
         wearableUpdated(wearable, removed);
     }
 }
@@ -105,14 +105,14 @@ void LLWearableData::pushWearable(const LLWearableType::EType type,
         mWearableDatas[type].push_back(wearable);
         if (trigger_updated)
         {
-            const BOOL removed = FALSE;
+            const bool removed = false;
             wearableUpdated(wearable, removed);
         }
     }
 }
 
 // virtual
-void LLWearableData::wearableUpdated(LLWearable *wearable, BOOL removed)
+void LLWearableData::wearableUpdated(LLWearable *wearable, bool removed)
 {
     wearable->setUpdated();
     if (!removed)
@@ -144,7 +144,7 @@ void LLWearableData::eraseWearable(const LLWearableType::EType type, U32 index)
     if (wearable)
     {
         mWearableDatas[type].erase(mWearableDatas[type].begin() + index);
-        const BOOL removed = TRUE;
+        const bool removed = true;
         wearableUpdated(wearable, removed);
     }
 }
@@ -200,11 +200,11 @@ void LLWearableData::pullCrossWearableValues(const LLWearableType::EType type)
 }
 
 
-BOOL LLWearableData::getWearableIndex(const LLWearable *wearable, U32& index_found) const
+bool LLWearableData::getWearableIndex(const LLWearable *wearable, U32& index_found) const
 {
     if (wearable == NULL)
     {
-        return FALSE;
+        return false;
     }
 
     const LLWearableType::EType type = wearable->getType();
@@ -212,7 +212,7 @@ BOOL LLWearableData::getWearableIndex(const LLWearable *wearable, U32& index_fou
     if (wearable_iter == mWearableDatas.end())
     {
         LL_WARNS() << "tried to get wearable index with an invalid type!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
     const wearableentry_vec_t& wearable_vec = wearable_iter->second;
     for(U32 index = 0; index < wearable_vec.size(); index++)
@@ -220,11 +220,11 @@ BOOL LLWearableData::getWearableIndex(const LLWearable *wearable, U32& index_fou
         if (wearable_vec[index] == wearable)
         {
             index_found = index;
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 U32 LLWearableData::getClothingLayerCount() const
@@ -242,7 +242,7 @@ U32 LLWearableData::getClothingLayerCount() const
     return count;
 }
 
-BOOL LLWearableData::canAddWearable(const LLWearableType::EType type) const
+bool LLWearableData::canAddWearable(const LLWearableType::EType type) const
 {
     LLAssetType::EType a_type = LLWearableType::getInstance()->getAssetType(type);
     if (a_type==LLAssetType::AT_CLOTHING)
@@ -255,13 +255,13 @@ BOOL LLWearableData::canAddWearable(const LLWearableType::EType type) const
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
-BOOL LLWearableData::isOnTop(LLWearable* wearable) const
+bool LLWearableData::isOnTop(LLWearable* wearable) const
 {
-    if (!wearable) return FALSE;
+    if (!wearable) return false;
     const LLWearableType::EType type = wearable->getType();
     return ( getTopWearable(type) == wearable );
 }
@@ -334,7 +334,7 @@ U32 LLWearableData::getWearableCount(const LLWearableType::EType type) const
         return 0;
     }
     const wearableentry_vec_t& wearable_vec = wearable_iter->second;
-    return wearable_vec.size();
+    return static_cast<U32>(wearable_vec.size());
 }
 
 U32 LLWearableData::getWearableCount(const U32 tex_index) const
diff --git a/indra/llappearance/llwearabledata.h b/indra/llappearance/llwearabledata.h
index 4276335bd6..1266aed008 100644
--- a/indra/llappearance/llwearabledata.h
+++ b/indra/llappearance/llwearabledata.h
@@ -60,11 +60,11 @@ public:
     const LLWearable*   getBottomWearable(const LLWearableType::EType type) const;
     U32             getWearableCount(const LLWearableType::EType type) const;
     U32             getWearableCount(const U32 tex_index) const;
-    BOOL            getWearableIndex(const LLWearable *wearable, U32& index) const;
+    bool            getWearableIndex(const LLWearable *wearable, U32& index) const;
     U32             getClothingLayerCount() const;
-    BOOL            canAddWearable(const LLWearableType::EType type) const;
+    bool            canAddWearable(const LLWearableType::EType type) const;
 
-    BOOL            isOnTop(LLWearable* wearable) const;
+    bool            isOnTop(LLWearable* wearable) const;
 
     static const U32 MAX_CLOTHING_LAYERS = 60;
 
@@ -76,7 +76,7 @@ protected:
     void            setWearable(const LLWearableType::EType type, U32 index, LLWearable *wearable);
     void            pushWearable(const LLWearableType::EType type, LLWearable *wearable,
                                  bool trigger_updated = true);
-    virtual void    wearableUpdated(LLWearable *wearable, BOOL removed);
+    virtual void    wearableUpdated(LLWearable *wearable, bool removed);
     void            eraseWearable(LLWearable *wearable);
     void            eraseWearable(const LLWearableType::EType type, U32 index);
     void            clearWearableType(const LLWearableType::EType type);
diff --git a/indra/llappearance/llwearabletype.cpp b/indra/llappearance/llwearabletype.cpp
index 3a6b3969f6..988304cbac 100644
--- a/indra/llappearance/llwearabletype.cpp
+++ b/indra/llappearance/llwearabletype.cpp
@@ -32,27 +32,27 @@
 
 LLWearableType::LLWearableDictionary::LLWearableDictionary(LLTranslationBridge::ptr_t& trans)
 {
-    addEntry(LLWearableType::WT_SHAPE,        new WearableEntry(trans, "shape",       "New Shape",          LLAssetType::AT_BODYPART,   LLInventoryType::ICONNAME_BODYPART_SHAPE, FALSE, FALSE));
-    addEntry(LLWearableType::WT_SKIN,         new WearableEntry(trans, "skin",        "New Skin",           LLAssetType::AT_BODYPART,   LLInventoryType::ICONNAME_BODYPART_SKIN, FALSE, FALSE));
-    addEntry(LLWearableType::WT_HAIR,         new WearableEntry(trans, "hair",        "New Hair",           LLAssetType::AT_BODYPART,   LLInventoryType::ICONNAME_BODYPART_HAIR, FALSE, FALSE));
-    addEntry(LLWearableType::WT_EYES,         new WearableEntry(trans, "eyes",        "New Eyes",           LLAssetType::AT_BODYPART,   LLInventoryType::ICONNAME_BODYPART_EYES, FALSE, FALSE));
-    addEntry(LLWearableType::WT_SHIRT,        new WearableEntry(trans, "shirt",       "New Shirt",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_SHIRT, FALSE, TRUE));
-    addEntry(LLWearableType::WT_PANTS,        new WearableEntry(trans, "pants",       "New Pants",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_PANTS, FALSE, TRUE));
-    addEntry(LLWearableType::WT_SHOES,        new WearableEntry(trans, "shoes",       "New Shoes",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_SHOES, FALSE, TRUE));
-    addEntry(LLWearableType::WT_SOCKS,        new WearableEntry(trans, "socks",       "New Socks",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_SOCKS, FALSE, TRUE));
-    addEntry(LLWearableType::WT_JACKET,       new WearableEntry(trans, "jacket",      "New Jacket",     LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_JACKET, FALSE, TRUE));
-    addEntry(LLWearableType::WT_GLOVES,       new WearableEntry(trans, "gloves",      "New Gloves",     LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_GLOVES, FALSE, TRUE));
-    addEntry(LLWearableType::WT_UNDERSHIRT,   new WearableEntry(trans, "undershirt",  "New Undershirt", LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_UNDERSHIRT, FALSE, TRUE));
-    addEntry(LLWearableType::WT_UNDERPANTS,   new WearableEntry(trans, "underpants",  "New Underpants", LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_UNDERPANTS, FALSE, TRUE));
-    addEntry(LLWearableType::WT_SKIRT,        new WearableEntry(trans, "skirt",       "New Skirt",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_SKIRT, FALSE, TRUE));
-    addEntry(LLWearableType::WT_ALPHA,        new WearableEntry(trans, "alpha",       "New Alpha",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_ALPHA, FALSE, TRUE));
-    addEntry(LLWearableType::WT_TATTOO,       new WearableEntry(trans, "tattoo",      "New Tattoo",     LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_TATTOO, FALSE, TRUE));
-    addEntry(LLWearableType::WT_UNIVERSAL,    new WearableEntry(trans, "universal",   "New Universal",     LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_UNIVERSAL, FALSE, TRUE));
-
-    addEntry(LLWearableType::WT_PHYSICS,      new WearableEntry(trans, "physics",     "New Physics",        LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_PHYSICS, TRUE, TRUE));
-
-    addEntry(LLWearableType::WT_INVALID,      new WearableEntry(trans, "invalid",     "Invalid Wearable",   LLAssetType::AT_NONE,       LLInventoryType::ICONNAME_UNKNOWN, FALSE, FALSE));
-    addEntry(LLWearableType::WT_NONE,         new WearableEntry(trans, "none",        "Invalid Wearable",   LLAssetType::AT_NONE,       LLInventoryType::ICONNAME_NONE, FALSE, FALSE));
+    addEntry(LLWearableType::WT_SHAPE,        new WearableEntry(trans, "shape",       "New Shape",          LLAssetType::AT_BODYPART,   LLInventoryType::ICONNAME_BODYPART_SHAPE, false, false));
+    addEntry(LLWearableType::WT_SKIN,         new WearableEntry(trans, "skin",        "New Skin",           LLAssetType::AT_BODYPART,   LLInventoryType::ICONNAME_BODYPART_SKIN, false, false));
+    addEntry(LLWearableType::WT_HAIR,         new WearableEntry(trans, "hair",        "New Hair",           LLAssetType::AT_BODYPART,   LLInventoryType::ICONNAME_BODYPART_HAIR, false, false));
+    addEntry(LLWearableType::WT_EYES,         new WearableEntry(trans, "eyes",        "New Eyes",           LLAssetType::AT_BODYPART,   LLInventoryType::ICONNAME_BODYPART_EYES, false, false));
+    addEntry(LLWearableType::WT_SHIRT,        new WearableEntry(trans, "shirt",       "New Shirt",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_SHIRT, false, true));
+    addEntry(LLWearableType::WT_PANTS,        new WearableEntry(trans, "pants",       "New Pants",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_PANTS, false, true));
+    addEntry(LLWearableType::WT_SHOES,        new WearableEntry(trans, "shoes",       "New Shoes",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_SHOES, false, true));
+    addEntry(LLWearableType::WT_SOCKS,        new WearableEntry(trans, "socks",       "New Socks",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_SOCKS, false, true));
+    addEntry(LLWearableType::WT_JACKET,       new WearableEntry(trans, "jacket",      "New Jacket",     LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_JACKET, false, true));
+    addEntry(LLWearableType::WT_GLOVES,       new WearableEntry(trans, "gloves",      "New Gloves",     LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_GLOVES, false, true));
+    addEntry(LLWearableType::WT_UNDERSHIRT,   new WearableEntry(trans, "undershirt",  "New Undershirt", LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_UNDERSHIRT, false, true));
+    addEntry(LLWearableType::WT_UNDERPANTS,   new WearableEntry(trans, "underpants",  "New Underpants", LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_UNDERPANTS, false, true));
+    addEntry(LLWearableType::WT_SKIRT,        new WearableEntry(trans, "skirt",       "New Skirt",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_SKIRT, false, true));
+    addEntry(LLWearableType::WT_ALPHA,        new WearableEntry(trans, "alpha",       "New Alpha",          LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_ALPHA, false, true));
+    addEntry(LLWearableType::WT_TATTOO,       new WearableEntry(trans, "tattoo",      "New Tattoo",     LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_TATTOO, false, true));
+    addEntry(LLWearableType::WT_UNIVERSAL,    new WearableEntry(trans, "universal",   "New Universal",     LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_UNIVERSAL, false, true));
+
+    addEntry(LLWearableType::WT_PHYSICS,      new WearableEntry(trans, "physics",     "New Physics",        LLAssetType::AT_CLOTHING,   LLInventoryType::ICONNAME_CLOTHING_PHYSICS, true, true));
+
+    addEntry(LLWearableType::WT_INVALID,      new WearableEntry(trans, "invalid",     "Invalid Wearable",   LLAssetType::AT_NONE,       LLInventoryType::ICONNAME_UNKNOWN, false, false));
+    addEntry(LLWearableType::WT_NONE,         new WearableEntry(trans, "none",        "Invalid Wearable",   LLAssetType::AT_NONE,       LLInventoryType::ICONNAME_NONE, false, false));
 }
 
 
@@ -112,17 +112,17 @@ LLInventoryType::EIconName LLWearableType::getIconName(LLWearableType::EType typ
     return entry->mIconName;
 }
 
-BOOL LLWearableType::getDisableCameraSwitch(LLWearableType::EType type)
+bool LLWearableType::getDisableCameraSwitch(LLWearableType::EType type)
 {
     const WearableEntry *entry = mDictionary.lookup(type);
-    if (!entry) return FALSE;
+    if (!entry) return false;
     return entry->mDisableCameraSwitch;
 }
 
-BOOL LLWearableType::getAllowMultiwear(LLWearableType::EType type)
+bool LLWearableType::getAllowMultiwear(LLWearableType::EType type)
 {
     const WearableEntry *entry = mDictionary.lookup(type);
-    if (!entry) return FALSE;
+    if (!entry) return false;
     return entry->mAllowMultiwear;
 }
 
diff --git a/indra/llappearance/llwearabletype.h b/indra/llappearance/llwearabletype.h
index 99846586dc..206a344134 100644
--- a/indra/llappearance/llwearabletype.h
+++ b/indra/llappearance/llwearabletype.h
@@ -72,8 +72,8 @@ public:
     LLAssetType::EType                  getAssetType(EType type);
     EType                               typeNameToType(const std::string& type_name);
     LLInventoryType::EIconName          getIconName(EType type);
-    BOOL                                getDisableCameraSwitch(EType type);
-    BOOL                                getAllowMultiwear(EType type);
+    bool                                getDisableCameraSwitch(EType type);
+    bool                                getAllowMultiwear(EType type);
 
     static EType                        inventoryFlagsToWearableType(U32 flags);
 
@@ -85,8 +85,8 @@ private:
             const std::string& default_new_name,
             LLAssetType::EType assetType,
             LLInventoryType::EIconName iconName,
-            BOOL disable_camera_switch = FALSE,
-            BOOL allow_multiwear = TRUE) :
+            bool disable_camera_switch = false,
+            bool allow_multiwear = true) :
             LLDictionaryEntry(name),
             mAssetType(assetType),
             mDefaultNewName(default_new_name),
@@ -101,8 +101,8 @@ private:
         const std::string mLabel;
         const std::string mDefaultNewName;
         LLInventoryType::EIconName mIconName;
-        BOOL mDisableCameraSwitch;
-        BOOL mAllowMultiwear;
+        bool mDisableCameraSwitch;
+        bool mAllowMultiwear;
     };
 
     class LLWearableDictionary : public LLDictionary<LLWearableType::EType, WearableEntry>
diff --git a/indra/llaudio/CMakeLists.txt b/indra/llaudio/CMakeLists.txt
index f36da83c69..ba043f8fec 100644
--- a/indra/llaudio/CMakeLists.txt
+++ b/indra/llaudio/CMakeLists.txt
@@ -4,7 +4,6 @@ project(llaudio)
 
 include(00-Common)
 include(LLAudio)
-include(FMODSTUDIO)
 include(OPENAL)
 include(LLCommon)
 
@@ -25,20 +24,6 @@ set(llaudio_HEADER_FILES
     llwindgen.h
     )
 
-if (TARGET ll::fmodstudio)
-    list(APPEND llaudio_SOURCE_FILES
-         llaudioengine_fmodstudio.cpp
-         lllistener_fmodstudio.cpp
-         llstreamingaudio_fmodstudio.cpp
-         )
-
-    list(APPEND llaudio_HEADER_FILES
-         llaudioengine_fmodstudio.h
-         lllistener_fmodstudio.h
-         llstreamingaudio_fmodstudio.h
-         )
-endif ()
-
 if (TARGET ll::openal)
   list(APPEND llaudio_SOURCE_FILES
     llaudioengine_openal.cpp
diff --git a/indra/llaudio/llaudiodecodemgr.cpp b/indra/llaudio/llaudiodecodemgr.cpp
index ba4939f595..a46f9acc63 100755
--- a/indra/llaudio/llaudiodecodemgr.cpp
+++ b/indra/llaudio/llaudiodecodemgr.cpp
@@ -70,22 +70,22 @@ public:
 
     LLVorbisDecodeState(const LLUUID &uuid, const std::string &out_filename);
 
-    BOOL initDecode();
-    BOOL decodeSection(); // Return TRUE if done.
-    BOOL finishDecode();
+    bool initDecode();
+    bool decodeSection(); // Return true if done.
+    bool finishDecode();
 
     void flushBadFile();
 
     void ioComplete(S32 bytes)          { mBytesRead = bytes; }
-    BOOL isValid() const                { return mValid; }
-    BOOL isDone() const                 { return mDone; }
+    bool isValid() const                { return mValid; }
+    bool isDone() const                 { return mDone; }
     const LLUUID &getUUID() const       { return mUUID; }
 
 protected:
     virtual ~LLVorbisDecodeState();
 
-    BOOL mValid;
-    BOOL mDone;
+    bool mValid;
+    bool mDone;
     LLAtomicS32 mBytesRead;
     LLUUID mUUID;
 
@@ -164,8 +164,8 @@ long cache_tell (void *datasource)
 
 LLVorbisDecodeState::LLVorbisDecodeState(const LLUUID &uuid, const std::string &out_filename)
 {
-    mDone = FALSE;
-    mValid = FALSE;
+    mDone = false;
+    mValid = false;
     mBytesRead = -1;
     mUUID = uuid;
     mInFilep = NULL;
@@ -188,7 +188,7 @@ LLVorbisDecodeState::~LLVorbisDecodeState()
 }
 
 
-BOOL LLVorbisDecodeState::initDecode()
+bool LLVorbisDecodeState::initDecode()
 {
     ov_callbacks cache_callbacks;
     cache_callbacks.read_func = cache_read;
@@ -204,14 +204,14 @@ BOOL LLVorbisDecodeState::initDecode()
         LL_WARNS("AudioEngine") << "unable to open vorbis source vfile for reading" << LL_ENDL;
         delete mInFilep;
         mInFilep = NULL;
-        return FALSE;
+        return false;
     }
 
     S32 r = ov_open_callbacks(mInFilep, &mVF, NULL, 0, cache_callbacks);
     if(r < 0)
     {
         LL_WARNS("AudioEngine") << r << " Input to vorbis decode does not appear to be an Ogg bitstream: " << mUUID << LL_ENDL;
-        return(FALSE);
+        return(false);
     }
 
     S32 sample_count = (S32)ov_pcm_total(&mVF, -1);
@@ -260,7 +260,7 @@ BOOL LLVorbisDecodeState::initDecode()
         }
         delete mInFilep;
         mInFilep = NULL;
-        return FALSE;
+        return false;
     }
 
     try
@@ -273,7 +273,7 @@ BOOL LLVorbisDecodeState::initDecode()
         LL_WARNS("AudioEngine") << "Out of memory when trying to alloc buffer: " << size_guess << LL_ENDL;
         delete mInFilep;
         mInFilep = NULL;
-        return FALSE;
+        return false;
     }
 
     {
@@ -360,31 +360,31 @@ BOOL LLVorbisDecodeState::initDecode()
 //    fprintf(stderr,"\nDecoded length: %ld samples\n", (long)ov_pcm_total(&vf,-1));
 //    fprintf(stderr,"Encoded by: %s\n\n",ov_comment(&vf,-1)->vendor);
     //}
-    return TRUE;
+    return true;
 }
 
-BOOL LLVorbisDecodeState::decodeSection()
+bool LLVorbisDecodeState::decodeSection()
 {
     if (!mInFilep)
     {
         LL_WARNS("AudioEngine") << "No cache file to decode in vorbis!" << LL_ENDL;
-        return TRUE;
+        return true;
     }
     if (mDone)
     {
 //      LL_WARNS("AudioEngine") << "Already done with decode, aborting!" << LL_ENDL;
-        return TRUE;
+        return true;
     }
     char pcmout[4096];  /*Flawfinder: ignore*/
 
-    BOOL eof = FALSE;
+    bool eof = false;
     long ret=ov_read(&mVF, pcmout, sizeof(pcmout), 0, 2, 1, &mCurrentSection);
     if (ret == 0)
     {
         /* EOF */
-        eof = TRUE;
-        mDone = TRUE;
-        mValid = TRUE;
+        eof = true;
+        mDone = true;
+        mValid = true;
 //          LL_INFOS("AudioEngine") << "Vorbis EOF" << LL_ENDL;
     }
     else if (ret < 0)
@@ -394,10 +394,10 @@ BOOL LLVorbisDecodeState::decodeSection()
 
         LL_WARNS("AudioEngine") << "BAD vorbis decode in decodeSection." << LL_ENDL;
 
-        mValid = FALSE;
-        mDone = TRUE;
-        // We're done, return TRUE.
-        return TRUE;
+        mValid = false;
+        mDone = true;
+        // We're done, return true.
+        return true;
     }
     else
     {
@@ -409,12 +409,12 @@ BOOL LLVorbisDecodeState::decodeSection()
     return eof;
 }
 
-BOOL LLVorbisDecodeState::finishDecode()
+bool LLVorbisDecodeState::finishDecode()
 {
     if (!isValid())
     {
         LL_WARNS("AudioEngine") << "Bogus vorbis decode state for " << getUUID() << ", aborting!" << LL_ENDL;
-        return TRUE; // We've finished
+        return true; // We've finished
     }
 
     if (mFileHandle == LLLFSThread::nullHandle())
@@ -422,7 +422,7 @@ BOOL LLVorbisDecodeState::finishDecode()
         ov_clear(&mVF);
 
         // write "data" chunk length, in little-endian format
-        S32 data_length = mWAVBuffer.size() - WAV_HEADER_SIZE;
+        S32 data_length = static_cast<S32>(mWAVBuffer.size()) - WAV_HEADER_SIZE;
         mWAVBuffer[40] = (data_length) & 0x000000FF;
         mWAVBuffer[41] = (data_length >> 8) & 0x000000FF;
         mWAVBuffer[42] = (data_length >> 16) & 0x000000FF;
@@ -463,7 +463,7 @@ BOOL LLVorbisDecodeState::finishDecode()
             {
                 memcpy(&mWAVBuffer[WAV_HEADER_SIZE], pcmout, (2 * fade_length));    /*Flawfinder: ignore*/
             }
-            S32 near_end = mWAVBuffer.size() - (2 * fade_length);
+            S32 near_end = static_cast<S32>(mWAVBuffer.size()) - (2 * fade_length);
             if ((S32)mWAVBuffer.size() >= ( near_end + 2* fade_length))
             {
                 memcpy(pcmout, &mWAVBuffer[near_end], (2 * fade_length));   /*Flawfinder: ignore*/
@@ -487,11 +487,11 @@ BOOL LLVorbisDecodeState::finishDecode()
         if (36 == data_length)
         {
             LL_WARNS("AudioEngine") << "BAD Vorbis decode in finishDecode!" << LL_ENDL;
-            mValid = FALSE;
-            return TRUE; // we've finished
+            mValid = false;
+            return true; // we've finished
         }
         mBytesRead = -1;
-        mFileHandle = LLLFSThread::sLocal->write(mOutFilename, &mWAVBuffer[0], 0, mWAVBuffer.size(),
+        mFileHandle = LLLFSThread::sLocal->write(mOutFilename, &mWAVBuffer[0], 0, static_cast<S32>(mWAVBuffer.size()),
                              new WriteResponder(this));
     }
 
@@ -502,21 +502,21 @@ BOOL LLVorbisDecodeState::finishDecode()
             if (mBytesRead == 0)
             {
                 LL_WARNS("AudioEngine") << "Unable to write file in LLVorbisDecodeState::finishDecode" << LL_ENDL;
-                mValid = FALSE;
-                return TRUE; // we've finished
+                mValid = false;
+                return true; // we've finished
             }
         }
         else
         {
-            return FALSE; // not done
+            return false; // not done
         }
     }
 
-    mDone = TRUE;
+    mDone = true;
 
     LL_DEBUGS("AudioEngine") << "Finished decode for " << getUUID() << LL_ENDL;
 
-    return TRUE;
+    return true;
 }
 
 void LLVorbisDecodeState::flushBadFile()
@@ -779,13 +779,13 @@ void LLAudioDecodeMgr::processQueue()
     mImpl->processQueue();
 }
 
-BOOL LLAudioDecodeMgr::addDecodeRequest(const LLUUID &uuid)
+bool LLAudioDecodeMgr::addDecodeRequest(const LLUUID &uuid)
 {
     if (gAudiop && gAudiop->hasDecodedFile(uuid))
     {
         // Already have a decoded version, don't need to decode it.
         LL_DEBUGS("AudioEngine") << "addDecodeRequest for " << uuid << " has decoded file already" << LL_ENDL;
-        return TRUE;
+        return true;
     }
 
     if (gAssetStorage->hasLocalAsset(uuid, LLAssetType::AT_SOUND))
@@ -793,9 +793,9 @@ BOOL LLAudioDecodeMgr::addDecodeRequest(const LLUUID &uuid)
         // Just put it on the decode queue.
         LL_DEBUGS("AudioEngine") << "addDecodeRequest for " << uuid << " has local asset file already" << LL_ENDL;
         mImpl->mDecodeQueue.push_back(uuid);
-        return TRUE;
+        return true;
     }
 
     LL_DEBUGS("AudioEngine") << "addDecodeRequest for " << uuid << " no file available" << LL_ENDL;
-    return FALSE;
+    return false;
 }
diff --git a/indra/llaudio/llaudiodecodemgr.h b/indra/llaudio/llaudiodecodemgr.h
index 02d5c67587..79f8b8e92e 100644
--- a/indra/llaudio/llaudiodecodemgr.h
+++ b/indra/llaudio/llaudiodecodemgr.h
@@ -43,7 +43,7 @@ class LLAudioDecodeMgr : public LLSingleton<LLAudioDecodeMgr>
     ~LLAudioDecodeMgr();
 public:
     void processQueue();
-    BOOL addDecodeRequest(const LLUUID &uuid);
+    bool addDecodeRequest(const LLUUID &uuid);
     void addAudioRequest(const LLUUID &uuid);
 
 protected:
diff --git a/indra/llaudio/llaudioengine.h b/indra/llaudio/llaudioengine.h
index 2a16050c5b..a9a229c0a5 100755
--- a/indra/llaudio/llaudioengine.h
+++ b/indra/llaudio/llaudioengine.h
@@ -265,7 +265,7 @@ public:
 
     void preload(const LLUUID &audio_id); // Only used for preloading UI sounds, now.
 
-    void addAudioData(LLAudioData *adp, bool set_current = TRUE);
+    void addAudioData(LLAudioData *adp, bool set_current = true);
 
     void setForcedPriority(const bool ambient)                      { mForcedPriority = ambient; }
     bool isForcedPriority() const                                   { return mForcedPriority; }
diff --git a/indra/llaudio/llaudioengine_fmodstudio.cpp b/indra/llaudio/llaudioengine_fmodstudio.cpp
deleted file mode 100644
index b4e8407083..0000000000
--- a/indra/llaudio/llaudioengine_fmodstudio.cpp
+++ /dev/null
@@ -1,756 +0,0 @@
-/**
- * @file audioengine_fmodstudio.cpp
- * @brief Implementation of LLAudioEngine class abstracting the audio
- * support as a FMODSTUDIO implementation
- *
- * $LicenseInfo:firstyear=2020&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2020, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "linden_common.h"
-
-#include "llstreamingaudio.h"
-#include "llstreamingaudio_fmodstudio.h"
-
-#include "llaudioengine_fmodstudio.h"
-#include "lllistener_fmodstudio.h"
-
-#include "llerror.h"
-#include "llmath.h"
-#include "llrand.h"
-
-#include "fmodstudio/fmod.hpp"
-#include "fmodstudio/fmod_errors.h"
-#include "lldir.h"
-#include "llapr.h"
-
-#include "sound_ids.h"
-
-FMOD_RESULT F_CALLBACK windCallback(FMOD_DSP_STATE *dsp_state, float *inbuffer, float *outbuffer, unsigned int length, int inchannels, int *outchannels);
-
-FMOD::ChannelGroup *LLAudioEngine_FMODSTUDIO::mChannelGroups[LLAudioEngine::AUDIO_TYPE_COUNT] = {0};
-
-LLAudioEngine_FMODSTUDIO::LLAudioEngine_FMODSTUDIO(bool enable_profiler)
-:   mInited(false),
-    mWindGen(NULL),
-    mWindDSP(NULL),
-    mSystem(NULL),
-    mEnableProfiler(enable_profiler),
-    mWindDSPDesc(NULL)
-{
-}
-
-
-LLAudioEngine_FMODSTUDIO::~LLAudioEngine_FMODSTUDIO()
-{
-    // mWindDSPDesc, mWindGen and mWindDSP get cleaned up on cleanupWind in LLAudioEngine::shutdown()
-    // mSystem gets cleaned up at shutdown()
-}
-
-
-static inline bool Check_FMOD_Error(FMOD_RESULT result, const char *string)
-{
-    if (result == FMOD_OK)
-        return false;
-    LL_DEBUGS("FMOD") << string << " Error: " << FMOD_ErrorString(result) << LL_ENDL;
-    return true;
-}
-
-bool LLAudioEngine_FMODSTUDIO::init(void* userdata, const std::string &app_title)
-{
-    U32 version;
-    FMOD_RESULT result;
-
-    LL_DEBUGS("AppInit") << "LLAudioEngine_FMODSTUDIO::init() initializing FMOD" << LL_ENDL;
-
-    result = FMOD::System_Create(&mSystem);
-    if (Check_FMOD_Error(result, "FMOD::System_Create"))
-        return false;
-
-    //will call LLAudioEngine_FMODSTUDIO::allocateListener, which needs a valid mSystem pointer.
-    LLAudioEngine::init(userdata, app_title);
-
-    result = mSystem->getVersion(&version);
-    Check_FMOD_Error(result, "FMOD::System::getVersion");
-
-    if (version < FMOD_VERSION)
-    {
-        LL_WARNS("AppInit") << "FMOD Studio version mismatch, actual: " << version
-            << " expected:" << FMOD_VERSION << LL_ENDL;
-    }
-
-    // In this case, all sounds, PLUS wind and stream will be software.
-    result = mSystem->setSoftwareChannels(LL_MAX_AUDIO_CHANNELS + 2);
-    Check_FMOD_Error(result, "FMOD::System::setSoftwareChannels");
-
-    FMOD_ADVANCEDSETTINGS settings;
-    memset(&settings, 0, sizeof(settings));
-    settings.cbSize = sizeof(FMOD_ADVANCEDSETTINGS);
-    settings.resamplerMethod = FMOD_DSP_RESAMPLER_LINEAR;
-
-    result = mSystem->setAdvancedSettings(&settings);
-    Check_FMOD_Error(result, "FMOD::System::setAdvancedSettings");
-
-    // FMOD_INIT_THREAD_UNSAFE Disables thread safety for API calls.
-    // Only use this if FMOD is being called from a single thread, and if Studio API is not being used.
-    U32 fmod_flags = FMOD_INIT_NORMAL | FMOD_INIT_3D_RIGHTHANDED | FMOD_INIT_THREAD_UNSAFE;
-    if (mEnableProfiler)
-    {
-        fmod_flags |= FMOD_INIT_PROFILE_ENABLE;
-    }
-
-#if LL_LINUX
-    bool audio_ok = false;
-
-    if (!audio_ok)
-    {
-        const char* env_string = getenv("LL_BAD_FMOD_PULSEAUDIO");
-        if (NULL == env_string)
-        {
-            LL_DEBUGS("AppInit") << "Trying PulseAudio audio output..." << LL_ENDL;
-            if (mSystem->setOutput(FMOD_OUTPUTTYPE_PULSEAUDIO) == FMOD_OK &&
-                (result = mSystem->init(LL_MAX_AUDIO_CHANNELS + 2, fmod_flags, const_cast<char*>(app_title.c_str()))) == FMOD_OK)
-            {
-                LL_DEBUGS("AppInit") << "PulseAudio output initialized OKAY" << LL_ENDL;
-                audio_ok = true;
-            }
-            else
-            {
-                Check_FMOD_Error(result, "PulseAudio audio output FAILED to initialize");
-            }
-        }
-        else
-        {
-            LL_DEBUGS("AppInit") << "PulseAudio audio output SKIPPED" << LL_ENDL;
-        }
-    }
-    if (!audio_ok)
-    {
-        const char* env_string = getenv("LL_BAD_FMOD_ALSA");
-        if (NULL == env_string)
-        {
-            LL_DEBUGS("AppInit") << "Trying ALSA audio output..." << LL_ENDL;
-            if (mSystem->setOutput(FMOD_OUTPUTTYPE_ALSA) == FMOD_OK &&
-                (result = mSystem->init(LL_MAX_AUDIO_CHANNELS + 2, fmod_flags, 0)) == FMOD_OK)
-            {
-                LL_DEBUGS("AppInit") << "ALSA audio output initialized OKAY" << LL_ENDL;
-                audio_ok = true;
-            }
-            else
-            {
-                Check_FMOD_Error(result, "ALSA audio output FAILED to initialize");
-            }
-        }
-        else
-        {
-            LL_DEBUGS("AppInit") << "ALSA audio output SKIPPED" << LL_ENDL;
-        }
-    }
-    if (!audio_ok)
-    {
-        LL_WARNS("AppInit") << "Overall audio init failure." << LL_ENDL;
-        return false;
-    }
-
-    // We're interested in logging which output method we
-    // ended up with, for QA purposes.
-    FMOD_OUTPUTTYPE output_type;
-    mSystem->getOutput(&output_type);
-    switch (output_type)
-    {
-    case FMOD_OUTPUTTYPE_NOSOUND:
-        LL_INFOS("AppInit") << "Audio output: NoSound" << LL_ENDL; break;
-    case FMOD_OUTPUTTYPE_PULSEAUDIO:
-        LL_INFOS("AppInit") << "Audio output: PulseAudio" << LL_ENDL; break;
-    case FMOD_OUTPUTTYPE_ALSA:
-        LL_INFOS("AppInit") << "Audio output: ALSA" << LL_ENDL; break;
-    default:
-        LL_INFOS("AppInit") << "Audio output: Unknown!" << LL_ENDL; break;
-    };
-#else // LL_LINUX
-
-    // initialize the FMOD engine
-    // number of channel in this case looks to be identiacal to number of max simultaneously
-    // playing objects and we can set practically any number
-    result = mSystem->init(LL_MAX_AUDIO_CHANNELS + 2, fmod_flags, 0);
-    if (Check_FMOD_Error(result, "Error initializing FMOD Studio with default settins, retrying with other format"))
-    {
-        result = mSystem->setSoftwareFormat(44100, FMOD_SPEAKERMODE_STEREO, 0/*- ignore*/);
-        if (Check_FMOD_Error(result, "Error setting sotware format. Can't init."))
-        {
-            return false;
-        }
-        result = mSystem->init(LL_MAX_AUDIO_CHANNELS + 2, fmod_flags, 0);
-    }
-    if (Check_FMOD_Error(result, "Error initializing FMOD Studio"))
-    {
-        // If it fails here and (result == FMOD_ERR_OUTPUT_CREATEBUFFER),
-        // we can retry with other settings
-        return false;
-    }
-#endif
-
-    LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init() FMOD Studio initialized correctly" << LL_ENDL;
-
-    int r_numbuffers, r_samplerate, r_channels;
-    unsigned int r_bufferlength;
-    char r_name[512];
-    int latency = 100;
-    mSystem->getDSPBufferSize(&r_bufferlength, &r_numbuffers);
-    LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init(): r_bufferlength=" << r_bufferlength << " bytes" << LL_ENDL;
-    LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init(): r_numbuffers=" << r_numbuffers << LL_ENDL;
-
-    mSystem->getDriverInfo(0, r_name, 511, NULL, &r_samplerate, NULL, &r_channels);
-    r_name[511] = '\0';
-    LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init(): r_name=\"" << r_name << "\"" << LL_ENDL;
-
-    if (r_samplerate != 0)
-        latency = (int)(1000.0f * r_bufferlength * r_numbuffers / r_samplerate);
-    LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init(): latency=" << latency << "ms" << LL_ENDL;
-
-    mInited = true;
-
-    LL_INFOS("AppInit") << "LLAudioEngine_FMODSTUDIO::init(): initialization complete." << LL_ENDL;
-
-    return true;
-}
-
-
-std::string LLAudioEngine_FMODSTUDIO::getDriverName(bool verbose)
-{
-    llassert_always(mSystem);
-    if (verbose)
-    {
-        U32 version;
-        if (!Check_FMOD_Error(mSystem->getVersion(&version), "FMOD::System::getVersion"))
-        {
-            return llformat("FMOD Studio %1x.%02x.%02x (Firelight Technologies Pty Ltd)", version >> 16, version >> 8 & 0x000000FF, version & 0x000000FF);
-        }
-    }
-    return "FMOD STUDIO";
-}
-
-
-// create our favourite FMOD-native streaming audio implementation
-LLStreamingAudioInterface *LLAudioEngine_FMODSTUDIO::createDefaultStreamingAudioImpl() const
-{
-    return new LLStreamingAudio_FMODSTUDIO(mSystem);
-}
-
-
-void LLAudioEngine_FMODSTUDIO::allocateListener(void)
-{
-    mListenerp = (LLListener *) new LLListener_FMODSTUDIO(mSystem);
-    if (!mListenerp)
-    {
-        LL_WARNS("FMOD") << "Listener creation failed" << LL_ENDL;
-    }
-}
-
-
-void LLAudioEngine_FMODSTUDIO::shutdown()
-{
-    stopInternetStream();
-
-    LL_INFOS("FMOD") << "About to LLAudioEngine::shutdown()" << LL_ENDL;
-    LLAudioEngine::shutdown();
-
-    LL_INFOS("FMOD") << "LLAudioEngine_FMODSTUDIO::shutdown() closing FMOD Studio" << LL_ENDL;
-    if (mSystem)
-    {
-        mSystem->close();
-        mSystem->release();
-    }
-    LL_INFOS("FMOD") << "LLAudioEngine_FMODSTUDIO::shutdown() done closing FMOD Studio" << LL_ENDL;
-
-    delete mListenerp;
-    mListenerp = NULL;
-}
-
-
-LLAudioBuffer * LLAudioEngine_FMODSTUDIO::createBuffer()
-{
-    return new LLAudioBufferFMODSTUDIO(mSystem);
-}
-
-
-LLAudioChannel * LLAudioEngine_FMODSTUDIO::createChannel()
-{
-    return new LLAudioChannelFMODSTUDIO(mSystem);
-}
-
-bool LLAudioEngine_FMODSTUDIO::initWind()
-{
-    mNextWindUpdate = 0.0;
-
-    if (!mWindDSPDesc)
-    {
-        mWindDSPDesc = new FMOD_DSP_DESCRIPTION();
-    }
-
-    if (!mWindDSP)
-    {
-        memset(mWindDSPDesc, 0, sizeof(*mWindDSPDesc)); //Set everything to zero
-        strncpy(mWindDSPDesc->name, "Wind Unit", sizeof(mWindDSPDesc->name));
-        mWindDSPDesc->pluginsdkversion = FMOD_PLUGIN_SDK_VERSION;
-        mWindDSPDesc->read = &windCallback; // Assign callback - may be called from arbitrary threads
-        if (Check_FMOD_Error(mSystem->createDSP(mWindDSPDesc, &mWindDSP), "FMOD::createDSP"))
-            return false;
-
-        if (mWindGen)
-            delete mWindGen;
-
-        int frequency = 44100;
-
-        FMOD_SPEAKERMODE mode;
-        if (Check_FMOD_Error(mSystem->getSoftwareFormat(&frequency, &mode, nullptr), "FMOD::System::getSoftwareFormat"))
-        {
-            cleanupWind();
-            return false;
-        }
-
-        mWindGen = new LLWindGen<MIXBUFFERFORMAT>((U32)frequency);
-
-        if (Check_FMOD_Error(mWindDSP->setUserData((void*)mWindGen), "FMOD::DSP::setUserData"))
-        {
-            cleanupWind();
-            return false;
-        }
-        if (Check_FMOD_Error(mWindDSP->setChannelFormat(FMOD_CHANNELMASK_STEREO, 2, mode), "FMOD::DSP::setChannelFormat"))
-        {
-            cleanupWind();
-            return false;
-        }
-    }
-
-    // *TODO:  Should this guard against multiple plays?
-    if (Check_FMOD_Error(mSystem->playDSP(mWindDSP, nullptr, false, nullptr), "FMOD::System::playDSP"))
-    {
-        cleanupWind();
-        return false;
-    }
-    return true;
-}
-
-
-void LLAudioEngine_FMODSTUDIO::cleanupWind()
-{
-    if (mWindDSP)
-    {
-        FMOD::ChannelGroup* master_group = NULL;
-        if (!Check_FMOD_Error(mSystem->getMasterChannelGroup(&master_group), "FMOD::System::getMasterChannelGroup")
-            && master_group)
-        {
-            master_group->removeDSP(mWindDSP);
-        }
-        mWindDSP->release();
-        mWindDSP = NULL;
-    }
-
-    delete mWindDSPDesc;
-    mWindDSPDesc = NULL;
-
-    delete mWindGen;
-    mWindGen = NULL;
-}
-
-
-//-----------------------------------------------------------------------
-void LLAudioEngine_FMODSTUDIO::updateWind(LLVector3 wind_vec, F32 camera_height_above_water)
-{
-    LLVector3 wind_pos;
-    F64 pitch;
-    F64 center_freq;
-
-    if (!mEnableWind)
-    {
-        return;
-    }
-
-    if (mWindUpdateTimer.checkExpirationAndReset(LL_WIND_UPDATE_INTERVAL))
-    {
-
-        // wind comes in as Linden coordinate (+X = forward, +Y = left, +Z = up)
-        // need to convert this to the conventional orientation DS3D and OpenAL use
-        // where +X = right, +Y = up, +Z = backwards
-
-        wind_vec.setVec(-wind_vec.mV[1], wind_vec.mV[2], -wind_vec.mV[0]);
-
-        // cerr << "Wind update" << endl;
-
-        pitch = 1.0 + mapWindVecToPitch(wind_vec);
-        center_freq = 80.0 * pow(pitch, 2.5*(mapWindVecToGain(wind_vec) + 1.0));
-
-        mWindGen->mTargetFreq = (F32)center_freq;
-        mWindGen->mTargetGain = (F32)mapWindVecToGain(wind_vec) * mMaxWindGain;
-        mWindGen->mTargetPanGainR = (F32)mapWindVecToPan(wind_vec);
-    }
-}
-
-//-----------------------------------------------------------------------
-void LLAudioEngine_FMODSTUDIO::setInternalGain(F32 gain)
-{
-    if (!mInited)
-    {
-        return;
-    }
-
-    gain = llclamp(gain, 0.0f, 1.0f);
-
-    FMOD::ChannelGroup* master_group = NULL;
-    if (!Check_FMOD_Error(mSystem->getMasterChannelGroup(&master_group), "FMOD::System::getMasterChannelGroup")
-        && master_group)
-    {
-        master_group->setVolume(gain);
-    }
-
-    LLStreamingAudioInterface *saimpl = getStreamingAudioImpl();
-    if (saimpl)
-    {
-        // fmod likes its streaming audio channel gain re-asserted after
-        // master volume change.
-        saimpl->setGain(saimpl->getGain());
-    }
-}
-
-//
-// LLAudioChannelFMODSTUDIO implementation
-//
-
-LLAudioChannelFMODSTUDIO::LLAudioChannelFMODSTUDIO(FMOD::System *system) : LLAudioChannel(), mSystemp(system), mChannelp(NULL), mLastSamplePos(0)
-{
-}
-
-
-LLAudioChannelFMODSTUDIO::~LLAudioChannelFMODSTUDIO()
-{
-    cleanup();
-}
-
-bool LLAudioChannelFMODSTUDIO::updateBuffer()
-{
-    if (!mCurrentSourcep)
-    {
-        // This channel isn't associated with any source, nothing
-        // to be updated
-        return false;
-    }
-
-    if (LLAudioChannel::updateBuffer())
-    {
-        // Base class update returned true, which means that we need to actually
-        // set up the channel for a different buffer.
-
-        LLAudioBufferFMODSTUDIO *bufferp = (LLAudioBufferFMODSTUDIO *)mCurrentSourcep->getCurrentBuffer();
-
-        // Grab the FMOD sample associated with the buffer
-        FMOD::Sound *soundp = bufferp->getSound();
-        if (!soundp)
-        {
-            // This is bad, there should ALWAYS be a sound associated with a legit
-            // buffer.
-            LL_ERRS() << "No FMOD sound!" << LL_ENDL;
-            return false;
-        }
-
-
-        // Actually play the sound.  Start it off paused so we can do all the necessary
-        // setup.
-        if (!mChannelp)
-        {
-            FMOD_RESULT result = getSystem()->playSound(soundp, NULL /*free channel?*/, true, &mChannelp);
-            Check_FMOD_Error(result, "FMOD::System::playSound");
-        }
-
-        // Setting up channel mChannelID
-    }
-
-    // If we have a source for the channel, we need to update its gain.
-    if (mCurrentSourcep)
-    {
-        // SJB: warnings can spam and hurt framerate, disabling
-        //FMOD_RESULT result;
-
-        mChannelp->setVolume(getSecondaryGain() * mCurrentSourcep->getGain());
-        //Check_FMOD_Error(result, "FMOD::Channel::setVolume");
-
-        mChannelp->setMode(mCurrentSourcep->isLoop() ? FMOD_LOOP_NORMAL : FMOD_LOOP_OFF);
-        /*if(Check_FMOD_Error(result, "FMOD::Channel::setMode"))
-        {
-        S32 index;
-        mChannelp->getIndex(&index);
-        LL_WARNS() << "Channel " << index << "Source ID: " << mCurrentSourcep->getID()
-        << " at " << mCurrentSourcep->getPositionGlobal() << LL_ENDL;
-        }*/
-    }
-
-    return true;
-}
-
-
-void LLAudioChannelFMODSTUDIO::update3DPosition()
-{
-    if (!mChannelp)
-    {
-        // We're not actually a live channel (i.e., we're not playing back anything)
-        return;
-    }
-
-    LLAudioBufferFMODSTUDIO  *bufferp = (LLAudioBufferFMODSTUDIO  *)mCurrentBufferp;
-    if (!bufferp)
-    {
-        // We don't have a buffer associated with us (should really have been picked up
-        // by the above if.
-        return;
-    }
-
-    if (mCurrentSourcep->isForcedPriority())
-    {
-        // Prioritized UI and preview sounds don't need to do any positional updates.
-        set3DMode(false);
-    }
-    else
-    {
-        // Localized sound.  Update the position and velocity of the sound.
-        set3DMode(true);
-
-        LLVector3 float_pos;
-        float_pos.setVec(mCurrentSourcep->getPositionGlobal());
-        FMOD_RESULT result = mChannelp->set3DAttributes((FMOD_VECTOR*)float_pos.mV, (FMOD_VECTOR*)mCurrentSourcep->getVelocity().mV);
-        Check_FMOD_Error(result, "FMOD::Channel::set3DAttributes");
-    }
-}
-
-
-void LLAudioChannelFMODSTUDIO::updateLoop()
-{
-    if (!mChannelp)
-    {
-        // May want to clear up the loop/sample counters.
-        return;
-    }
-
-    //
-    // Hack:  We keep track of whether we looped or not by seeing when the
-    // sample position looks like it's going backwards.  Not reliable; may
-    // yield false negatives.
-    //
-    U32 cur_pos;
-    mChannelp->getPosition(&cur_pos, FMOD_TIMEUNIT_PCMBYTES);
-
-    if (cur_pos < (U32)mLastSamplePos)
-    {
-        mLoopedThisFrame = true;
-    }
-    mLastSamplePos = cur_pos;
-}
-
-
-void LLAudioChannelFMODSTUDIO::cleanup()
-{
-    if (!mChannelp)
-    {
-        // Aborting cleanup with no channel handle.
-        return;
-    }
-
-    //Cleaning up channel mChannelID
-    Check_FMOD_Error(mChannelp->stop(), "FMOD::Channel::stop");
-
-    mCurrentBufferp = NULL;
-    mChannelp = NULL;
-}
-
-
-void LLAudioChannelFMODSTUDIO::play()
-{
-    if (!mChannelp)
-    {
-        LL_WARNS() << "Playing without a channel handle, aborting" << LL_ENDL;
-        return;
-    }
-
-    Check_FMOD_Error(mChannelp->setPaused(false), "FMOD::Channel::pause");
-
-    getSource()->setPlayedOnce(true);
-
-    if (LLAudioEngine_FMODSTUDIO::mChannelGroups[getSource()->getType()])
-        mChannelp->setChannelGroup(LLAudioEngine_FMODSTUDIO::mChannelGroups[getSource()->getType()]);
-}
-
-
-void LLAudioChannelFMODSTUDIO::playSynced(LLAudioChannel *channelp)
-{
-    LLAudioChannelFMODSTUDIO *fmod_channelp = (LLAudioChannelFMODSTUDIO*)channelp;
-    if (!(fmod_channelp->mChannelp && mChannelp))
-    {
-        // Don't have channels allocated to both the master and the slave
-        return;
-    }
-
-    U32 cur_pos;
-    if (Check_FMOD_Error(mChannelp->getPosition(&cur_pos, FMOD_TIMEUNIT_PCMBYTES), "Unable to retrieve current position"))
-        return;
-
-    cur_pos %= mCurrentBufferp->getLength();
-
-    // Try to match the position of our sync master
-    Check_FMOD_Error(mChannelp->setPosition(cur_pos, FMOD_TIMEUNIT_PCMBYTES), "Unable to set current position");
-
-    // Start us playing
-    play();
-}
-
-
-bool LLAudioChannelFMODSTUDIO::isPlaying()
-{
-    if (!mChannelp)
-    {
-        return false;
-    }
-
-    bool paused, playing;
-    mChannelp->getPaused(&paused);
-    mChannelp->isPlaying(&playing);
-    return !paused && playing;
-}
-
-
-//
-// LLAudioChannelFMODSTUDIO implementation
-//
-
-
-LLAudioBufferFMODSTUDIO::LLAudioBufferFMODSTUDIO(FMOD::System *system) : mSystemp(system), mSoundp(NULL)
-{
-}
-
-
-LLAudioBufferFMODSTUDIO::~LLAudioBufferFMODSTUDIO()
-{
-    if (mSoundp)
-    {
-        mSoundp->release();
-        mSoundp = NULL;
-    }
-}
-
-
-bool LLAudioBufferFMODSTUDIO::loadWAV(const std::string& filename)
-{
-    // Try to open a wav file from disk.  This will eventually go away, as we don't
-    // really want to block doing this.
-    if (filename.empty())
-    {
-        // invalid filename, abort.
-        return false;
-    }
-
-    if (!gDirUtilp->fileExists(filename))
-    {
-        // File not found, abort.
-        return false;
-    }
-
-    if (mSoundp)
-    {
-        // If there's already something loaded in this buffer, clean it up.
-        mSoundp->release();
-        mSoundp = NULL;
-    }
-
-    FMOD_MODE base_mode = FMOD_LOOP_NORMAL;
-    FMOD_CREATESOUNDEXINFO exinfo;
-    memset(&exinfo, 0, sizeof(exinfo));
-    exinfo.cbsize = sizeof(exinfo);
-    exinfo.suggestedsoundtype = FMOD_SOUND_TYPE_WAV;    //Hint to speed up loading.
-    // Load up the wav file into an fmod sample (since 1.05 fmod studio expects everything in UTF-8)
-    FMOD_RESULT result = getSystem()->createSound(filename.c_str(), base_mode, &exinfo, &mSoundp);
-
-    if (result != FMOD_OK)
-    {
-        // We failed to load the file for some reason.
-        LL_WARNS() << "Could not load data '" << filename << "': " << FMOD_ErrorString(result) << LL_ENDL;
-
-        //
-        // If we EVER want to load wav files provided by end users, we need
-        // to rethink this!
-        //
-        // file is probably corrupt - remove it.
-        LLFile::remove(filename);
-        return false;
-    }
-
-    // Everything went well, return true
-    return true;
-}
-
-
-U32 LLAudioBufferFMODSTUDIO::getLength()
-{
-    if (!mSoundp)
-    {
-        return 0;
-    }
-
-    U32 length;
-    mSoundp->getLength(&length, FMOD_TIMEUNIT_PCMBYTES);
-    return length;
-}
-
-
-void LLAudioChannelFMODSTUDIO::set3DMode(bool use3d)
-{
-    FMOD_MODE current_mode;
-    if (mChannelp->getMode(&current_mode) != FMOD_OK)
-        return;
-    FMOD_MODE new_mode = current_mode;
-    new_mode &= ~(use3d ? FMOD_2D : FMOD_3D);
-    new_mode |= use3d ? FMOD_3D : FMOD_2D;
-
-    if (current_mode != new_mode)
-    {
-        mChannelp->setMode(new_mode);
-    }
-}
-
-// *NOTE:  This is almost certainly being called on the mixer thread,
-// not the main thread.  May have implications for callees or audio
-// engine shutdown.
-
-FMOD_RESULT F_CALLBACK windCallback(FMOD_DSP_STATE *dsp_state, float *inbuffer, float *outbuffer, unsigned int length, int inchannels, int *outchannels)
-{
-    // inbuffer = fmod's original mixbuffer.
-    // outbuffer = the buffer passed from the previous DSP unit.
-    // length = length in samples at this mix time.
-
-    LLWindGen<LLAudioEngine_FMODSTUDIO::MIXBUFFERFORMAT> *windgen = NULL;
-    FMOD::DSP *thisdsp = (FMOD::DSP *)dsp_state->instance;
-
-    thisdsp->getUserData((void **)&windgen);
-
-    if (windgen)
-    {
-        windgen->windGenerate((LLAudioEngine_FMODSTUDIO::MIXBUFFERFORMAT *)outbuffer, length);
-    }
-
-    return FMOD_OK;
-}
diff --git a/indra/llaudio/llaudioengine_fmodstudio.h b/indra/llaudio/llaudioengine_fmodstudio.h
deleted file mode 100644
index eb346e0466..0000000000
--- a/indra/llaudio/llaudioengine_fmodstudio.h
+++ /dev/null
@@ -1,131 +0,0 @@
-/**
- * @file audioengine_fmodstudio.h
- * @brief Definition of LLAudioEngine class abstracting the audio
- * support as a FMODSTUDIO implementation
- *
- * $LicenseInfo:firstyear=2020&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2020, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_AUDIOENGINE_FMODSTUDIO_H
-#define LL_AUDIOENGINE_FMODSTUDIO_H
-
-#include "llaudioengine.h"
-#include "llwindgen.h"
-
-//Stubs
-class LLAudioStreamManagerFMODSTUDIO;
-namespace FMOD
-{
-    class System;
-    class Channel;
-    class ChannelGroup;
-    class Sound;
-    class DSP;
-}
-typedef struct FMOD_DSP_DESCRIPTION FMOD_DSP_DESCRIPTION;
-
-//Interfaces
-class LLAudioEngine_FMODSTUDIO : public LLAudioEngine
-{
-public:
-    LLAudioEngine_FMODSTUDIO(bool enable_profiler);
-    virtual ~LLAudioEngine_FMODSTUDIO();
-
-    // initialization/startup/shutdown
-    virtual bool init(void *user_data, const std::string &app_title);
-    virtual std::string getDriverName(bool verbose);
-    virtual LLStreamingAudioInterface* createDefaultStreamingAudioImpl() const;
-    virtual void allocateListener();
-
-    virtual void shutdown();
-
-    /*virtual*/ bool initWind();
-    /*virtual*/ void cleanupWind();
-
-    /*virtual*/void updateWind(LLVector3 direction, F32 camera_height_above_water);
-
-    typedef F32 MIXBUFFERFORMAT;
-
-    FMOD::System *getSystem()               const {return mSystem;}
-protected:
-    /*virtual*/ LLAudioBuffer *createBuffer(); // Get a free buffer, or flush an existing one if you have to.
-    /*virtual*/ LLAudioChannel *createChannel(); // Create a new audio channel.
-
-    /*virtual*/ void setInternalGain(F32 gain);
-
-    bool mInited;
-
-    LLWindGen<MIXBUFFERFORMAT> *mWindGen;
-
-    FMOD_DSP_DESCRIPTION *mWindDSPDesc;
-    FMOD::DSP *mWindDSP;
-    FMOD::System *mSystem;
-    bool mEnableProfiler;
-
-public:
-    static FMOD::ChannelGroup *mChannelGroups[LLAudioEngine::AUDIO_TYPE_COUNT];
-};
-
-
-class LLAudioChannelFMODSTUDIO : public LLAudioChannel
-{
-public:
-    LLAudioChannelFMODSTUDIO(FMOD::System *audioengine);
-    virtual ~LLAudioChannelFMODSTUDIO();
-
-protected:
-    /*virtual*/ void play();
-    /*virtual*/ void playSynced(LLAudioChannel *channelp);
-    /*virtual*/ void cleanup();
-    /*virtual*/ bool isPlaying();
-
-    /*virtual*/ bool updateBuffer();
-    /*virtual*/ void update3DPosition();
-    /*virtual*/ void updateLoop();
-
-    void set3DMode(bool use3d);
-protected:
-    FMOD::System *getSystem()   const {return mSystemp;}
-    FMOD::System *mSystemp;
-    FMOD::Channel *mChannelp;
-    S32 mLastSamplePos;
-};
-
-
-class LLAudioBufferFMODSTUDIO : public LLAudioBuffer
-{
-public:
-    LLAudioBufferFMODSTUDIO(FMOD::System *audioengine);
-    virtual ~LLAudioBufferFMODSTUDIO();
-
-    /*virtual*/ bool loadWAV(const std::string& filename);
-    /*virtual*/ U32 getLength();
-    friend class LLAudioChannelFMODSTUDIO;
-protected:
-    FMOD::System *getSystem()   const {return mSystemp;}
-    FMOD::System *mSystemp;
-    FMOD::Sound *getSound()     const{ return mSoundp; }
-    FMOD::Sound *mSoundp;
-};
-
-
-#endif // LL_AUDIOENGINE_FMODSTUDIO_H
diff --git a/indra/llaudio/llaudioengine_openal.cpp b/indra/llaudio/llaudioengine_openal.cpp
index 1c4c67e6f6..18d682b554 100644
--- a/indra/llaudio/llaudioengine_openal.cpp
+++ b/indra/llaudio/llaudioengine_openal.cpp
@@ -135,10 +135,19 @@ void LLAudioEngine_OpenAL::shutdown()
     LL_INFOS() << "About to LLAudioEngine::shutdown()" << LL_ENDL;
     LLAudioEngine::shutdown();
 
+    // If a subsequent error occurs while there is still an error recorded
+    // internally, the second error will simply be ignored.
+    // Clear previous error to make sure we will captuare a valid failure reason
+    ALenum error = alutGetError();
+    if (error != ALUT_ERROR_NO_ERROR)
+    {
+        LL_WARNS() << "Uncleared error state prior to shutdown: "
+            << alutGetErrorString(error) << LL_ENDL;
+    }
+
     LL_INFOS() << "About to alutExit()" << LL_ENDL;
     if(!alutExit())
     {
-        LL_WARNS() << "Nuts." << LL_ENDL;
         LL_WARNS() << "LLAudioEngine_OpenAL::shutdown() ALUT shutdown failed: " << alutGetErrorString (alutGetError ()) << LL_ENDL;
     }
 
@@ -518,7 +527,7 @@ void LLAudioEngine_OpenAL::updateWind(LLVector3 wind_vec, F32 camera_altitude)
         }
 
         alBufferData(buffer,
-                 AL_FORMAT_STEREO16,
+                 AL_FORMAT_STEREO_FLOAT32,
                  mWindGen->windGenerate(mWindBuf,
                             mWindBufSamples),
                  mWindBufBytes,
diff --git a/indra/llaudio/llaudioengine_openal.h b/indra/llaudio/llaudioengine_openal.h
index 9aadc84ddf..574bec416d 100644
--- a/indra/llaudio/llaudioengine_openal.h
+++ b/indra/llaudio/llaudioengine_openal.h
@@ -57,9 +57,9 @@ class LLAudioEngine_OpenAL : public LLAudioEngine
         /*virtual*/ void updateWind(LLVector3 direction, F32 camera_altitude);
 
     private:
-        typedef S16 WIND_SAMPLE_T;
+        typedef F32 WIND_SAMPLE_T;
         LLWindGen<WIND_SAMPLE_T> *mWindGen;
-        S16 *mWindBuf;
+        F32 *mWindBuf;
         U32 mWindBufFreq;
         U32 mWindBufSamples;
         U32 mWindBufBytes;
diff --git a/indra/llaudio/lllistener_fmodstudio.cpp b/indra/llaudio/lllistener_fmodstudio.cpp
deleted file mode 100644
index 9dc55eec79..0000000000
--- a/indra/llaudio/lllistener_fmodstudio.cpp
+++ /dev/null
@@ -1,136 +0,0 @@
-/**
- * @file listener_fmodstudio.cpp
- * @brief Implementation of LISTENER class abstracting the audio
- * support as a FMODSTUDIO implementation
- *
- * $LicenseInfo:firstyear=2020&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2020, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "linden_common.h"
-#include "llaudioengine.h"
-#include "lllistener_fmodstudio.h"
-#include "fmodstudio/fmod.hpp"
-
-//-----------------------------------------------------------------------
-// constructor
-//-----------------------------------------------------------------------
-LLListener_FMODSTUDIO::LLListener_FMODSTUDIO(FMOD::System *system)
-{
-    mSystem = system;
-    init();
-}
-
-//-----------------------------------------------------------------------
-LLListener_FMODSTUDIO::~LLListener_FMODSTUDIO()
-{
-}
-
-//-----------------------------------------------------------------------
-void LLListener_FMODSTUDIO::init(void)
-{
-    // do inherited
-    LLListener::init();
-    mDopplerFactor = 1.0f;
-    mRolloffFactor = 1.0f;
-}
-
-//-----------------------------------------------------------------------
-void LLListener_FMODSTUDIO::translate(LLVector3 offset)
-{
-    LLListener::translate(offset);
-
-    mSystem->set3DListenerAttributes(0, (FMOD_VECTOR*)mPosition.mV, NULL, (FMOD_VECTOR*)mListenAt.mV, (FMOD_VECTOR*)mListenUp.mV);
-}
-
-//-----------------------------------------------------------------------
-void LLListener_FMODSTUDIO::setPosition(LLVector3 pos)
-{
-    LLListener::setPosition(pos);
-
-    mSystem->set3DListenerAttributes(0, (FMOD_VECTOR*)mPosition.mV, NULL, (FMOD_VECTOR*)mListenAt.mV, (FMOD_VECTOR*)mListenUp.mV);
-}
-
-//-----------------------------------------------------------------------
-void LLListener_FMODSTUDIO::setVelocity(LLVector3 vel)
-{
-    LLListener::setVelocity(vel);
-
-    mSystem->set3DListenerAttributes(0, NULL, (FMOD_VECTOR*)mVelocity.mV, (FMOD_VECTOR*)mListenAt.mV, (FMOD_VECTOR*)mListenUp.mV);
-}
-
-//-----------------------------------------------------------------------
-void LLListener_FMODSTUDIO::orient(LLVector3 up, LLVector3 at)
-{
-    LLListener::orient(up, at);
-
-    // at = -at; by default Fmod studio is 'left-handed' but we are providing
-    // flag FMOD_INIT_3D_RIGHTHANDED so no correction are needed
-
-    mSystem->set3DListenerAttributes(0, NULL, NULL, (FMOD_VECTOR*)at.mV, (FMOD_VECTOR*)up.mV);
-}
-
-//-----------------------------------------------------------------------
-void LLListener_FMODSTUDIO::commitDeferredChanges()
-{
-    if (!mSystem)
-    {
-        return;
-    }
-
-    mSystem->update();
-}
-
-
-void LLListener_FMODSTUDIO::setRolloffFactor(F32 factor)
-{
-    //An internal FMOD optimization skips 3D updates if there have not been changes to the 3D sound environment.
-    // (this was true for FMODex, looks to be still true for FMOD STUDIO, but needs a recheck)
-    //Sadly, a change in rolloff is not accounted for, thus we must touch the listener properties as well.
-    //In short: Changing the position ticks a dirtyflag inside fmod, which makes it not skip 3D processing next update call.
-    if (mRolloffFactor != factor)
-    {
-        LLVector3 pos = mPosition - LLVector3(0.f, 0.f, .1f);
-        mSystem->set3DListenerAttributes(0, (FMOD_VECTOR*)pos.mV, NULL, NULL, NULL);
-        mSystem->set3DListenerAttributes(0, (FMOD_VECTOR*)mPosition.mV, NULL, NULL, NULL);
-    }
-    mRolloffFactor = factor;
-    mSystem->set3DSettings(mDopplerFactor, 1.f, mRolloffFactor);
-}
-
-
-F32 LLListener_FMODSTUDIO::getRolloffFactor()
-{
-    return mRolloffFactor;
-}
-
-
-void LLListener_FMODSTUDIO::setDopplerFactor(F32 factor)
-{
-    mDopplerFactor = factor;
-    mSystem->set3DSettings(mDopplerFactor, 1.f, mRolloffFactor);
-}
-
-
-F32 LLListener_FMODSTUDIO::getDopplerFactor()
-{
-    return mDopplerFactor;
-}
diff --git a/indra/llaudio/lllistener_fmodstudio.h b/indra/llaudio/lllistener_fmodstudio.h
deleted file mode 100644
index 5287cbedc6..0000000000
--- a/indra/llaudio/lllistener_fmodstudio.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/**
- * @file listener_fmodstudio.h
- * @brief Description of LISTENER class abstracting the audio support
- * as an FMOD 3D implementation
- *
- * $LicenseInfo:firstyear=2020&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2020, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LISTENER_FMODSTUDIO_H
-#define LL_LISTENER_FMODSTUDIO_H
-
-#include "lllistener.h"
-
-//Stubs
-namespace FMOD
-{
-    class System;
-}
-
-//Interfaces
-class LLListener_FMODSTUDIO : public LLListener
-{
-public:
-    LLListener_FMODSTUDIO(FMOD::System *system);
-    virtual ~LLListener_FMODSTUDIO();
-    virtual void init();
-
-    virtual void translate(LLVector3 offset);
-    virtual void setPosition(LLVector3 pos);
-    virtual void setVelocity(LLVector3 vel);
-    virtual void orient(LLVector3 up, LLVector3 at);
-    virtual void commitDeferredChanges();
-
-    virtual void setDopplerFactor(F32 factor);
-    virtual F32 getDopplerFactor();
-    virtual void setRolloffFactor(F32 factor);
-    virtual F32 getRolloffFactor();
-protected:
-    FMOD::System *mSystem;
-    F32 mDopplerFactor;
-    F32 mRolloffFactor;
-};
-
-#endif
-
-
diff --git a/indra/llaudio/lllistener_openal.h b/indra/llaudio/lllistener_openal.h
index a877270201..f1b69ddcef 100644
--- a/indra/llaudio/lllistener_openal.h
+++ b/indra/llaudio/lllistener_openal.h
@@ -32,6 +32,7 @@
 
 #include "AL/al.h"
 #include "AL/alut.h"
+#include "AL/alext.h"
 
 class LLListener_OpenAL  : public LLListener
 {
diff --git a/indra/llaudio/llstreamingaudio_fmodstudio.cpp b/indra/llaudio/llstreamingaudio_fmodstudio.cpp
deleted file mode 100644
index 22fc86c0cd..0000000000
--- a/indra/llaudio/llstreamingaudio_fmodstudio.cpp
+++ /dev/null
@@ -1,481 +0,0 @@
-/**
- * @file streamingaudio_fmodstudio.cpp
- * @brief LLStreamingAudio_FMODSTUDIO implementation
- *
- * $LicenseInfo:firstyear=2020&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2020, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "linden_common.h"
-
-#include "llmath.h"
-
-#include "fmodstudio/fmod.hpp"
-#include "fmodstudio/fmod_errors.h"
-
-#include "llstreamingaudio_fmodstudio.h"
-
-
-class LLAudioStreamManagerFMODSTUDIO
-{
-public:
-    LLAudioStreamManagerFMODSTUDIO(FMOD::System *system, const std::string& url);
-    FMOD::Channel* startStream();
-    bool stopStream(); // Returns true if the stream was successfully stopped.
-    bool ready();
-
-    const std::string& getURL()     { return mInternetStreamURL; }
-
-    FMOD_OPENSTATE getOpenState(unsigned int* percentbuffered = NULL, bool* starving = NULL, bool* diskbusy = NULL);
-protected:
-    FMOD::System* mSystem;
-    FMOD::Channel* mStreamChannel;
-    FMOD::Sound* mInternetStream;
-    bool mReady;
-
-    std::string mInternetStreamURL;
-};
-
-
-
-//---------------------------------------------------------------------------
-// Internet Streaming
-//---------------------------------------------------------------------------
-LLStreamingAudio_FMODSTUDIO::LLStreamingAudio_FMODSTUDIO(FMOD::System *system) :
-mSystem(system),
-mCurrentInternetStreamp(NULL),
-mFMODInternetStreamChannelp(NULL),
-mGain(1.0f),
-mRetryCount(0)
-{
-    // Number of milliseconds of audio to buffer for the audio card.
-    // Must be larger than the usual Second Life frame stutter time.
-    const U32 buffer_seconds = 10;      //sec
-    const U32 estimated_bitrate = 128;  //kbit/sec
-    FMOD_RESULT result = mSystem->setStreamBufferSize(estimated_bitrate * buffer_seconds * 128/*bytes/kbit*/, FMOD_TIMEUNIT_RAWBYTES);
-    if (result != FMOD_OK)
-    {
-        LL_WARNS("FMOD") << "setStreamBufferSize error: " << FMOD_ErrorString(result) << LL_ENDL;
-    }
-
-    // Here's where we set the size of the network buffer and some buffering
-    // parameters.  In this case we want a network buffer of 16k, we want it
-    // to prebuffer 40% of that when we first connect, and we want it
-    // to rebuffer 80% of that whenever we encounter a buffer underrun.
-
-    // Leave the net buffer properties at the default.
-    //FSOUND_Stream_Net_SetBufferProperties(20000, 40, 80);
-}
-
-
-LLStreamingAudio_FMODSTUDIO::~LLStreamingAudio_FMODSTUDIO()
-{
-    if (mCurrentInternetStreamp)
-    {
-        // Isn't supposed to hapen, stream should be clear by now,
-        // and if it does, we are likely going to crash.
-        LL_WARNS("FMOD") << "mCurrentInternetStreamp not null on shutdown!" << LL_ENDL;
-        stop();
-    }
-
-    // Kill dead internet streams, if possible
-    killDeadStreams();
-
-    if (!mDeadStreams.empty())
-    {
-        // LLStreamingAudio_FMODSTUDIO was inited on startup
-        // and should be destroyed on shutdown, it should
-        // wait for streams to die to not cause crashes or
-        // leaks.
-        // Ideally we need to wait on some kind of callback
-        // to release() streams correctly, but 200 ms should
-        // be enough and we can't wait forever.
-        LL_INFOS("FMOD") << "Waiting for " << (S32)mDeadStreams.size() << " streams to stop" << LL_ENDL;
-        for (S32 i = 0; i < 20; i++)
-        {
-            const U32 ms_delay = 10;
-            ms_sleep(ms_delay); // rude, but not many options here
-            killDeadStreams();
-            if (mDeadStreams.empty())
-            {
-                LL_INFOS("FMOD") << "All streams stopped after " << (S32)((i + 1) * ms_delay) << "ms" << LL_ENDL;
-                break;
-            }
-        }
-    }
-
-    if (!mDeadStreams.empty())
-    {
-        LL_WARNS("FMOD") << "Failed to kill some audio streams" << LL_ENDL;
-    }
-}
-
-void LLStreamingAudio_FMODSTUDIO::killDeadStreams()
-{
-    std::list<LLAudioStreamManagerFMODSTUDIO *>::iterator iter;
-    for (iter = mDeadStreams.begin(); iter != mDeadStreams.end();)
-    {
-        LLAudioStreamManagerFMODSTUDIO *streamp = *iter;
-        if (streamp->stopStream())
-        {
-            LL_INFOS("FMOD") << "Closed dead stream" << LL_ENDL;
-            delete streamp;
-            iter = mDeadStreams.erase(iter);
-        }
-        else
-        {
-            iter++;
-        }
-    }
-}
-
-void LLStreamingAudio_FMODSTUDIO::start(const std::string& url)
-{
-    //if (!mInited)
-    //{
-    //  LL_WARNS() << "startInternetStream before audio initialized" << LL_ENDL;
-    //  return;
-    //}
-
-    // "stop" stream but don't clear url, etc. in case url == mInternetStreamURL
-    stop();
-
-    if (!url.empty())
-    {
-        LL_INFOS("FMOD") << "Starting internet stream: " << url << LL_ENDL;
-        mCurrentInternetStreamp = new LLAudioStreamManagerFMODSTUDIO(mSystem, url);
-        mURL = url;
-    }
-    else
-    {
-        LL_INFOS("FMOD") << "Set internet stream to null" << LL_ENDL;
-        mURL.clear();
-    }
-
-    mRetryCount = 0;
-}
-
-
-void LLStreamingAudio_FMODSTUDIO::update()
-{
-    // Kill dead internet streams, if possible
-    killDeadStreams();
-
-    // Don't do anything if there are no streams playing
-    if (!mCurrentInternetStreamp)
-    {
-        return;
-    }
-
-    unsigned int progress;
-    bool starving;
-    bool diskbusy;
-    FMOD_OPENSTATE open_state = mCurrentInternetStreamp->getOpenState(&progress, &starving, &diskbusy);
-
-    if (open_state == FMOD_OPENSTATE_READY)
-    {
-        // Stream is live
-
-        // start the stream if it's ready
-        if (!mFMODInternetStreamChannelp &&
-            (mFMODInternetStreamChannelp = mCurrentInternetStreamp->startStream()))
-        {
-            // Reset volume to previously set volume
-            setGain(getGain());
-            mFMODInternetStreamChannelp->setPaused(false);
-        }
-        mRetryCount = 0;
-    }
-    else if (open_state == FMOD_OPENSTATE_ERROR)
-    {
-        LL_INFOS("FMOD") << "State: FMOD_OPENSTATE_ERROR"
-            << " Progress: " << U32(progress)
-            << " Starving: " << S32(starving)
-            << " Diskbusy: " << S32(diskbusy) << LL_ENDL;
-        if (mRetryCount < 2)
-        {
-            // Retry
-            std::string url = mURL;
-            stop(); // might drop mURL, drops mCurrentInternetStreamp
-
-            mRetryCount++;
-
-            if (!url.empty())
-            {
-                LL_INFOS("FMOD") << "Restarting internet stream: " << url  << ", attempt " << (mRetryCount + 1) << LL_ENDL;
-                mCurrentInternetStreamp = new LLAudioStreamManagerFMODSTUDIO(mSystem, url);
-                mURL = url;
-            }
-        }
-        else
-        {
-            stop();
-        }
-        return;
-    }
-
-    if (mFMODInternetStreamChannelp)
-    {
-        FMOD::Sound *sound = NULL;
-
-        if (mFMODInternetStreamChannelp->getCurrentSound(&sound) == FMOD_OK && sound)
-        {
-            FMOD_TAG tag;
-            S32 tagcount, dirtytagcount;
-
-            if (sound->getNumTags(&tagcount, &dirtytagcount) == FMOD_OK && dirtytagcount)
-            {
-                for (S32 i = 0; i < tagcount; ++i)
-                {
-                    if (sound->getTag(NULL, i, &tag) != FMOD_OK)
-                        continue;
-
-                    if (tag.type == FMOD_TAGTYPE_FMOD)
-                    {
-                        if (!strcmp(tag.name, "Sample Rate Change"))
-                        {
-                            LL_INFOS("FMOD") << "Stream forced changing sample rate to " << *((float *)tag.data) << LL_ENDL;
-                            mFMODInternetStreamChannelp->setFrequency(*((float *)tag.data));
-                        }
-                        continue;
-                    }
-                }
-            }
-
-            if (starving)
-            {
-                bool paused = false;
-                mFMODInternetStreamChannelp->getPaused(&paused);
-                if (!paused)
-                {
-                    LL_INFOS("FMOD") << "Stream starvation detected! Pausing stream until buffer nearly full." << LL_ENDL;
-                    LL_INFOS("FMOD") << "  (diskbusy=" << diskbusy << ")" << LL_ENDL;
-                    LL_INFOS("FMOD") << "  (progress=" << progress << ")" << LL_ENDL;
-                    mFMODInternetStreamChannelp->setPaused(true);
-                }
-            }
-            else if (progress > 80)
-            {
-                mFMODInternetStreamChannelp->setPaused(false);
-            }
-        }
-    }
-}
-
-void LLStreamingAudio_FMODSTUDIO::stop()
-{
-    if (mFMODInternetStreamChannelp)
-    {
-        mFMODInternetStreamChannelp->setPaused(true);
-        mFMODInternetStreamChannelp->setPriority(0);
-        mFMODInternetStreamChannelp = NULL;
-    }
-
-    if (mCurrentInternetStreamp)
-    {
-        LL_INFOS("FMOD") << "Stopping internet stream: " << mCurrentInternetStreamp->getURL() << LL_ENDL;
-        if (mCurrentInternetStreamp->stopStream())
-        {
-            delete mCurrentInternetStreamp;
-        }
-        else
-        {
-            LL_WARNS("FMOD") << "Pushing stream to dead list: " << mCurrentInternetStreamp->getURL() << LL_ENDL;
-            mDeadStreams.push_back(mCurrentInternetStreamp);
-        }
-        mCurrentInternetStreamp = NULL;
-        //mURL.clear();
-    }
-}
-
-void LLStreamingAudio_FMODSTUDIO::pause(int pauseopt)
-{
-    if (pauseopt < 0)
-    {
-        pauseopt = mCurrentInternetStreamp ? 1 : 0;
-    }
-
-    if (pauseopt)
-    {
-        if (mCurrentInternetStreamp)
-        {
-            LL_INFOS("FMOD") << "Pausing internet stream" << LL_ENDL;
-            stop();
-        }
-    }
-    else
-    {
-        start(getURL());
-    }
-}
-
-
-// A stream is "playing" if it has been requested to start.  That
-// doesn't necessarily mean audio is coming out of the speakers.
-int LLStreamingAudio_FMODSTUDIO::isPlaying()
-{
-    if (mCurrentInternetStreamp)
-    {
-        return 1; // Active and playing
-    }
-    else if (!mURL.empty())
-    {
-        return 2; // "Paused"
-    }
-    else
-    {
-        return 0;
-    }
-}
-
-
-F32 LLStreamingAudio_FMODSTUDIO::getGain()
-{
-    return mGain;
-}
-
-
-std::string LLStreamingAudio_FMODSTUDIO::getURL()
-{
-    return mURL;
-}
-
-
-void LLStreamingAudio_FMODSTUDIO::setGain(F32 vol)
-{
-    mGain = vol;
-
-    if (mFMODInternetStreamChannelp)
-    {
-        vol = llclamp(vol * vol, 0.f, 1.f); //should vol be squared here?
-
-        mFMODInternetStreamChannelp->setVolume(vol);
-    }
-}
-
-///////////////////////////////////////////////////////
-// manager of possibly-multiple internet audio streams
-
-LLAudioStreamManagerFMODSTUDIO::LLAudioStreamManagerFMODSTUDIO(FMOD::System *system, const std::string& url) :
-mSystem(system),
-mStreamChannel(NULL),
-mInternetStream(NULL),
-mReady(false)
-{
-    mInternetStreamURL = url;
-
-    FMOD_RESULT result = mSystem->createStream(url.c_str(), FMOD_2D | FMOD_NONBLOCKING | FMOD_IGNORETAGS, 0, &mInternetStream);
-
-    if (result != FMOD_OK)
-    {
-        LL_WARNS("FMOD") << "Couldn't open fmod stream, error "
-            << FMOD_ErrorString(result)
-            << LL_ENDL;
-        mReady = false;
-        return;
-    }
-
-    mReady = true;
-}
-
-FMOD::Channel *LLAudioStreamManagerFMODSTUDIO::startStream()
-{
-    // We need a live and opened stream before we try and play it.
-    if (!mInternetStream || getOpenState() != FMOD_OPENSTATE_READY)
-    {
-        LL_WARNS("FMOD") << "No internet stream to start playing!" << LL_ENDL;
-        return NULL;
-    }
-
-    if (mStreamChannel)
-        return mStreamChannel;  //Already have a channel for this stream.
-
-    FMOD_RESULT result = mSystem->playSound(mInternetStream, NULL, true, &mStreamChannel);
-    if (result != FMOD_OK)
-    {
-        LL_WARNS("FMOD") << FMOD_ErrorString(result) << LL_ENDL;
-    }
-    return mStreamChannel;
-}
-
-bool LLAudioStreamManagerFMODSTUDIO::stopStream()
-{
-    if (mInternetStream)
-    {
-
-
-        bool close = true;
-        switch (getOpenState())
-        {
-        case FMOD_OPENSTATE_CONNECTING:
-            close = false;
-            break;
-        default:
-            close = true;
-        }
-
-        if (close)
-        {
-            mInternetStream->release();
-            mStreamChannel = NULL;
-            mInternetStream = NULL;
-            return true;
-        }
-        else
-        {
-            return false;
-        }
-    }
-    else
-    {
-        return true;
-    }
-}
-
-FMOD_OPENSTATE LLAudioStreamManagerFMODSTUDIO::getOpenState(unsigned int* percentbuffered, bool* starving, bool* diskbusy)
-{
-    FMOD_OPENSTATE state;
-    FMOD_RESULT result = mInternetStream->getOpenState(&state, percentbuffered, starving, diskbusy);
-    if (result != FMOD_OK)
-    {
-        LL_WARNS("FMOD") << FMOD_ErrorString(result) << LL_ENDL;
-    }
-    return state;
-}
-
-void LLStreamingAudio_FMODSTUDIO::setBufferSizes(U32 streambuffertime, U32 decodebuffertime)
-{
-    FMOD_RESULT result = mSystem->setStreamBufferSize(streambuffertime / 1000 * 128 * 128, FMOD_TIMEUNIT_RAWBYTES);
-    if (result != FMOD_OK)
-    {
-        LL_WARNS("FMOD") << "setStreamBufferSize error: " << FMOD_ErrorString(result) << LL_ENDL;
-        return;
-    }
-    FMOD_ADVANCEDSETTINGS settings;
-    memset(&settings, 0, sizeof(settings));
-    settings.cbSize = sizeof(settings);
-    settings.defaultDecodeBufferSize = decodebuffertime;//ms
-    result = mSystem->setAdvancedSettings(&settings);
-    if (result != FMOD_OK)
-    {
-        LL_WARNS("FMOD") << "setAdvancedSettings error: " << FMOD_ErrorString(result) << LL_ENDL;
-    }
-}
diff --git a/indra/llaudio/llstreamingaudio_fmodstudio.h b/indra/llaudio/llstreamingaudio_fmodstudio.h
deleted file mode 100644
index 2127841809..0000000000
--- a/indra/llaudio/llstreamingaudio_fmodstudio.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/**
- * @file streamingaudio_fmodstudio.h
- * @brief Definition of LLStreamingAudio_FMODSTUDIO implementation
- *
- * $LicenseInfo:firstyear=2020&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2020, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_STREAMINGAUDIO_FMODSTUDIO_H
-#define LL_STREAMINGAUDIO_FMODSTUDIO_H
-
-#include "stdtypes.h" // from llcommon
-
-#include "llstreamingaudio.h"
-#include "lltimer.h"
-
-//Stubs
-class LLAudioStreamManagerFMODSTUDIO;
-namespace FMOD
-{
-    class System;
-    class Channel;
-}
-
-//Interfaces
-class LLStreamingAudio_FMODSTUDIO : public LLStreamingAudioInterface
-{
-public:
-    LLStreamingAudio_FMODSTUDIO(FMOD::System *system);
-    /*virtual*/ ~LLStreamingAudio_FMODSTUDIO();
-
-    /*virtual*/ void start(const std::string& url);
-    /*virtual*/ void stop();
-    /*virtual*/ void pause(S32 pause);
-    /*virtual*/ void update();
-    /*virtual*/ S32 isPlaying();
-    /*virtual*/ void setGain(F32 vol);
-    /*virtual*/ F32 getGain();
-    /*virtual*/ std::string getURL();
-
-    /*virtual*/ bool supportsAdjustableBufferSizes(){return true;}
-    /*virtual*/ void setBufferSizes(U32 streambuffertime, U32 decodebuffertime);
-private:
-    void killDeadStreams();
-
-    FMOD::System *mSystem;
-
-    LLAudioStreamManagerFMODSTUDIO *mCurrentInternetStreamp;
-    FMOD::Channel *mFMODInternetStreamChannelp;
-    std::list<LLAudioStreamManagerFMODSTUDIO *> mDeadStreams;
-
-    std::string mURL;
-    F32 mGain;
-    S32 mRetryCount;
-};
-
-
-#endif // LL_STREAMINGAUDIO_FMODSTUDIO_H
diff --git a/indra/llaudio/llvorbisencode.cpp b/indra/llaudio/llvorbisencode.cpp
index 573c947764..83e7fad92f 100644
--- a/indra/llaudio/llvorbisencode.cpp
+++ b/indra/llaudio/llvorbisencode.cpp
@@ -75,7 +75,7 @@ S32 check_for_invalid_wav_formats(const std::string& in_fname, std::string& erro
     U32 chunk_length = 0;
     U32 raw_data_length = 0;
     U32 bytes_per_sec = 0;
-    BOOL uncompressed_pcm = FALSE;
+    bool uncompressed_pcm = false;
 
     unsigned char wav_header[44];       /*Flawfinder: ignore*/
 
@@ -133,7 +133,7 @@ S32 check_for_invalid_wav_formats(const std::string& in_fname, std::string& erro
         {
             if ((wav_header[8] == 0x01) && (wav_header[9] == 0x00))
             {
-                uncompressed_pcm = TRUE;
+                uncompressed_pcm = true;
             }
             num_channels = ((U16) wav_header[11] << 8) + wav_header[10];
             sample_rate = ((U32) wav_header[15] << 24)
diff --git a/indra/llcharacter/llanimationstates.cpp b/indra/llcharacter/llanimationstates.cpp
index b44dccbe6c..7710589b06 100644
--- a/indra/llcharacter/llanimationstates.cpp
+++ b/indra/llcharacter/llanimationstates.cpp
@@ -367,7 +367,7 @@ const char *LLAnimationLibrary::animStateToString( const LLUUID& state )
 //-----------------------------------------------------------------------------
 // Return the animation state for a given name
 //-----------------------------------------------------------------------------
-LLUUID LLAnimationLibrary::stringToAnimState( const std::string& name, BOOL allow_ids )
+LLUUID LLAnimationLibrary::stringToAnimState( const std::string& name, bool allow_ids )
 {
     std::string lower_case_name(name);
     LLStringUtil::toLower(lower_case_name);
@@ -391,7 +391,7 @@ LLUUID LLAnimationLibrary::stringToAnimState( const std::string& name, BOOL allo
     else if (allow_ids)
     {
         // try to convert string to LLUUID
-        id.set(name, FALSE);
+        id.set(name, false);
     }
 
     return id;
diff --git a/indra/llcharacter/llanimationstates.h b/indra/llcharacter/llanimationstates.h
index 70134c12ab..85232b6612 100644
--- a/indra/llcharacter/llanimationstates.h
+++ b/indra/llcharacter/llanimationstates.h
@@ -220,7 +220,7 @@ public:
     // Return the animation state for the given name.
     // Retun NULL if the name is invalid.
     //-----------------------------------------------------------------------------
-    LLUUID stringToAnimState( const std::string& name, BOOL allow_ids = TRUE );
+    LLUUID stringToAnimState( const std::string& name, bool allow_ids = true );
 
     //-----------------------------------------------------------------------------
     // Associate an anim state with a name
diff --git a/indra/llcharacter/llbvhloader.cpp b/indra/llcharacter/llbvhloader.cpp
index 3aa2c86aad..9dace08e6f 100644
--- a/indra/llcharacter/llbvhloader.cpp
+++ b/indra/llcharacter/llbvhloader.cpp
@@ -184,7 +184,7 @@ LLBVHLoader::LLBVHLoader(const char* buffer, ELoadStatus &loadStatus, S32 &error
     LL_DEBUGS("BVH") << "After translations and optimize" << LL_ENDL;
     dumpBVHInfo();
 
-    mInitialized = TRUE;
+    mInitialized = true;
 }
 
 
@@ -227,7 +227,7 @@ ELoadStatus LLBVHLoader::loadTranslationTable(const char *fileName)
     //--------------------------------------------------------------------
     // load data one line at a time
     //--------------------------------------------------------------------
-    BOOL loadingGlobals = FALSE;
+    bool loadingGlobals = false;
     while ( getLine(fp) )
     {
         //----------------------------------------------------------------
@@ -251,7 +251,7 @@ ELoadStatus LLBVHLoader::loadTranslationTable(const char *fileName)
 
             if (strcmp(name, "GLOBALS")==0)
             {
-                loadingGlobals = TRUE;
+                loadingGlobals = true;
                 continue;
             }
         }
@@ -298,7 +298,7 @@ ELoadStatus LLBVHLoader::loadTranslationTable(const char *fileName)
 
             if ( sscanf(mLine, " %*s = %f %f", &loop_in, &loop_out) == 2 )
             {
-                mLoop = TRUE;
+                mLoop = true;
             }
             else if ( sscanf(mLine, " %*s = %127s", trueFalse) == 1 )   /* Flawfinder: ignore */
             {
@@ -496,8 +496,8 @@ void LLBVHLoader::makeTranslation(std::string alias_name, std::string joint_name
 
 if (joint_name == "mPelvis")
     {
-        newTrans.mRelativePositionKey = TRUE;
-        newTrans.mRelativeRotationKey = TRUE;
+        newTrans.mRelativePositionKey = true;
+        newTrans.mRelativeRotationKey = true;
     }
 
 }
@@ -609,7 +609,7 @@ ELoadStatus LLBVHLoader::loadBVHFile(const char *buffer, char* error_text, S32 &
     //--------------------------------------------------------------------
     // consume joints
     //--------------------------------------------------------------------
-    while (TRUE)
+    while (true)
     {
         //----------------------------------------------------------------
         // get next line
@@ -969,7 +969,7 @@ void LLBVHLoader::applyTranslations()
         if ( trans.mIgnore )
         {
             //LL_INFOS() << "NOTE: Ignoring " << joint->mName.c_str() << LL_ENDL;
-            joint->mIgnore = TRUE;
+            joint->mIgnore = true;
             continue;
         }
 
@@ -983,10 +983,10 @@ void LLBVHLoader::applyTranslations()
         }
 
         //Allow joint position changes as of SL-318
-        joint->mIgnorePositions = FALSE;
+        joint->mIgnorePositions = false;
         if (joint->mNumChannels == 3)
         {
-            joint->mIgnorePositions = TRUE;
+            joint->mIgnorePositions = true;
         }
 
         //----------------------------------------------------------------
@@ -995,13 +995,13 @@ void LLBVHLoader::applyTranslations()
         if ( trans.mRelativePositionKey )
         {
 //          LL_INFOS() << "NOTE: Removing 1st position offset from all keys for " << joint->mOutName.c_str() << LL_ENDL;
-            joint->mRelativePositionKey = TRUE;
+            joint->mRelativePositionKey = true;
         }
 
         if ( trans.mRelativeRotationKey )
         {
 //          LL_INFOS() << "NOTE: Removing 1st rotation from all keys for " << joint->mOutName.c_str() << LL_ENDL;
-            joint->mRelativeRotationKey = TRUE;
+            joint->mRelativeRotationKey = true;
         }
 
         if ( trans.mRelativePosition.magVec() > 0.0f )
@@ -1065,8 +1065,8 @@ void LLBVHLoader::optimize()
 
     for (Joint* joint : mJoints)
     {
-        BOOL pos_changed = FALSE;
-        BOOL rot_changed = FALSE;
+        bool pos_changed = false;
+        bool rot_changed = false;
 
         if ( ! joint->mIgnore )
         {
@@ -1079,7 +1079,7 @@ void LLBVHLoader::optimize()
             // no keys?
             if (first_key == joint->mKeys.end())
             {
-                joint->mIgnore = TRUE;
+                joint->mIgnore = true;
                 continue;
             }
 
@@ -1092,13 +1092,13 @@ void LLBVHLoader::optimize()
             {
                 // *FIX: use single frame to move pelvis
                 // if only one keyframe force output for this joint
-                rot_changed = TRUE;
+                rot_changed = true;
             }
             else
             {
                 // if more than one keyframe, use first frame as reference and skip to second
-                first_key->mIgnorePos = TRUE;
-                first_key->mIgnoreRot = TRUE;
+                first_key->mIgnorePos = true;
+                first_key->mIgnoreRot = true;
                 ++ki;
             }
 
@@ -1119,7 +1119,7 @@ void LLBVHLoader::optimize()
                     joint->mNumPosKeys++;
                     if (dist_vec_squared(LLVector3(ki_prev->mPos), first_frame_pos) > POSITION_MOTION_THRESHOLD_SQUARED)
                     {
-                        pos_changed = TRUE;
+                        pos_changed = true;
                     }
                 }
                 else
@@ -1132,12 +1132,12 @@ void LLBVHLoader::optimize()
 
                     if (dist_vec_squared(current_pos, first_frame_pos) > POSITION_MOTION_THRESHOLD_SQUARED)
                     {
-                        pos_changed = TRUE;
+                        pos_changed = true;
                     }
 
                     if (dist_vec_squared(interp_pos, test_pos) < POSITION_KEYFRAME_THRESHOLD_SQUARED)
                     {
-                        ki_prev->mIgnorePos = TRUE;
+                        ki_prev->mIgnorePos = true;
                         numPosFramesConsidered++;
                     }
                     else
@@ -1158,7 +1158,7 @@ void LLBVHLoader::optimize()
 
                     if (rot_test > ROTATION_MOTION_THRESHOLD)
                     {
-                        rot_changed = TRUE;
+                        rot_changed = true;
                     }
                 }
                 else
@@ -1180,7 +1180,7 @@ void LLBVHLoader::optimize()
                     rot_test = x_delta + y_delta;
                     if (rot_test > ROTATION_MOTION_THRESHOLD)
                     {
-                        rot_changed = TRUE;
+                        rot_changed = true;
                     }
                     x_delta = dist_vec(LLVector3::x_axis * interp_rot, LLVector3::x_axis * test_rot);
                     y_delta = dist_vec(LLVector3::y_axis * interp_rot, LLVector3::y_axis * test_rot);
@@ -1202,9 +1202,9 @@ void LLBVHLoader::optimize()
                         // because it's significantly faster.
                         if (diff_max > 0)
                         {
-                            if (ki_max->mIgnoreRot == TRUE)
+                            if (ki_max->mIgnoreRot)
                             {
-                                ki_max->mIgnoreRot = FALSE;
+                                ki_max->mIgnoreRot = false;
                                 joint->mNumRotKeys++;
                             }
                             diff_max = 0;
@@ -1213,7 +1213,7 @@ void LLBVHLoader::optimize()
                     else
                     {
                         // This keyframe isn't significant enough, throw it away.
-                        ki_prev->mIgnoreRot = TRUE;
+                        ki_prev->mIgnoreRot = true;
                         numRotFramesConsidered++;
                         // Store away the keyframe that has the largest deviation from the interpolated line, for insertion later.
                         if (rot_test > diff_max)
@@ -1232,7 +1232,7 @@ void LLBVHLoader::optimize()
         if (!(pos_changed || rot_changed))
         {
             //LL_INFOS() << "Ignoring joint " << joint->mName << LL_ENDL;
-            joint->mIgnore = TRUE;
+            joint->mIgnore = true;
         }
     }
 }
@@ -1245,13 +1245,13 @@ void LLBVHLoader::reset()
     mDuration = 0.0f;
 
     mPriority = 2;
-    mLoop = FALSE;
+    mLoop = false;
     mLoopInPoint = 0.f;
     mLoopOutPoint = 0.f;
     mEaseIn = 0.3f;
     mEaseOut = 0.3f;
     mHand = 1;
-    mInitialized = FALSE;
+    mInitialized = false;
 
     mEmoteName = "";
     mLineNumber = 0;
@@ -1262,19 +1262,19 @@ void LLBVHLoader::reset()
 //------------------------------------------------------------------------
 // LLBVHLoader::getLine()
 //------------------------------------------------------------------------
-BOOL LLBVHLoader::getLine(apr_file_t* fp)
+bool LLBVHLoader::getLine(apr_file_t* fp)
 {
     if (apr_file_eof(fp) == APR_EOF)
     {
-        return FALSE;
+        return false;
     }
     if ( apr_file_gets(mLine, BVH_PARSER_LINE_SIZE, fp) == APR_SUCCESS)
     {
         mLineNumber++;
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 // returns required size of output buffer
@@ -1287,7 +1287,7 @@ U32 LLBVHLoader::getOutputSize()
 }
 
 // writes contents to datapacker
-BOOL LLBVHLoader::serialize(LLDataPacker& dp)
+bool LLBVHLoader::serialize(LLDataPacker& dp)
 {
     F32 time;
 
@@ -1496,5 +1496,5 @@ BOOL LLBVHLoader::serialize(LLDataPacker& dp)
         }
 
 
-    return TRUE;
+    return true;
 }
diff --git a/indra/llcharacter/llbvhloader.h b/indra/llcharacter/llbvhloader.h
index 7923666d5c..de31f76dd3 100644
--- a/indra/llcharacter/llbvhloader.h
+++ b/indra/llcharacter/llbvhloader.h
@@ -71,8 +71,8 @@ struct Key
 
     F32 mPos[3];
     F32 mRot[3];
-    BOOL    mIgnorePos;
-    BOOL    mIgnoreRot;
+    bool    mIgnorePos;
+    bool    mIgnoreRot;
 };
 
 
@@ -89,10 +89,10 @@ struct Joint
     Joint(const char *name)
     {
         mName = name;
-        mIgnore = FALSE;
-        mIgnorePositions = FALSE;
-        mRelativePositionKey = FALSE;
-        mRelativeRotationKey = FALSE;
+        mIgnore = false;
+        mIgnorePositions = false;
+        mRelativePositionKey = false;
+        mRelativeRotationKey = false;
         mOutName = name;
         mOrder[0] = 'X';
         mOrder[1] = 'Y';
@@ -111,10 +111,10 @@ struct Joint
     LLVector3       mRelativePosition;
     //
     std::string     mName;
-    BOOL            mIgnore;
-    BOOL            mIgnorePositions;
-    BOOL            mRelativePositionKey;
-    BOOL            mRelativeRotationKey;
+    bool            mIgnore;
+    bool            mIgnorePositions;
+    bool            mRelativePositionKey;
+    bool            mRelativeRotationKey;
     std::string     mOutName;
     std::string     mMergeParentName;
     std::string     mMergeChildName;
@@ -161,18 +161,18 @@ class Translation
 public:
     Translation()
     {
-        mIgnore = FALSE;
-        mIgnorePositions = FALSE;
-        mRelativePositionKey = FALSE;
-        mRelativeRotationKey = FALSE;
+        mIgnore = false;
+        mIgnorePositions = false;
+        mRelativePositionKey = false;
+        mRelativeRotationKey = false;
         mPriorityModifier = 0;
     }
 
     std::string mOutName;
-    BOOL        mIgnore;
-    BOOL        mIgnorePositions;
-    BOOL        mRelativePositionKey;
-    BOOL        mRelativeRotationKey;
+    bool        mIgnore;
+    bool        mIgnorePositions;
+    bool        mRelativePositionKey;
+    bool        mRelativeRotationKey;
     LLMatrix3   mFrameMatrix;
     LLMatrix3   mOffsetMatrix;
     LLVector3   mRelativePosition;
@@ -293,7 +293,7 @@ public:
     U32 getOutputSize();
 
     // writes contents to datapacker
-    BOOL serialize(LLDataPacker& dp);
+    bool serialize(LLDataPacker& dp);
 
     // flags redundant keyframe data
     void optimize();
@@ -302,13 +302,13 @@ public:
 
     F32 getDuration() { return mDuration; }
 
-    BOOL isInitialized() { return mInitialized; }
+    bool isInitialized() { return mInitialized; }
 
     ELoadStatus getStatus() { return mStatus; }
 
 protected:
     // Consumes one line of input from file.
-    BOOL getLine(apr_file_t *fp);
+    bool getLine(apr_file_t *fp);
 
     // parser state
     char        mLine[BVH_PARSER_LINE_SIZE];        /* Flawfinder: ignore */
@@ -322,7 +322,7 @@ protected:
     TranslationMap      mTranslations;
 
     S32                 mPriority;
-    BOOL                mLoop;
+    bool                mLoop;
     F32                 mLoopInPoint;
     F32                 mLoopOutPoint;
     F32                 mEaseIn;
@@ -330,7 +330,7 @@ protected:
     S32                 mHand;
     std::string         mEmoteName;
 
-    BOOL                mInitialized;
+    bool                mInitialized;
     ELoadStatus         mStatus;
 
     // computed values
diff --git a/indra/llcharacter/llcharacter.cpp b/indra/llcharacter/llcharacter.cpp
index f2aa55a32c..264b9a0be1 100644
--- a/indra/llcharacter/llcharacter.cpp
+++ b/indra/llcharacter/llcharacter.cpp
@@ -39,7 +39,7 @@
 LLStringTable LLCharacter::sVisualParamNames(1024);
 
 std::vector< LLCharacter* > LLCharacter::sInstances;
-BOOL LLCharacter::sAllowInstancesChange = TRUE ;
+bool LLCharacter::sAllowInstancesChange = true ;
 
 //-----------------------------------------------------------------------------
 // LLCharacter()
@@ -73,8 +73,8 @@ LLCharacter::~LLCharacter()
         delete param;
     }
 
-    U32 i ;
-    U32 size = sInstances.size() ;
+    size_t i ;
+    size_t size = sInstances.size() ;
     for(i = 0 ; i < size ; i++)
     {
         if(sInstances[i] == this)
@@ -114,7 +114,7 @@ LLJoint *LLCharacter::getJoint( const std::string &name )
 //-----------------------------------------------------------------------------
 // registerMotion()
 //-----------------------------------------------------------------------------
-BOOL LLCharacter::registerMotion( const LLUUID& id, LLMotionConstructor create )
+bool LLCharacter::registerMotion( const LLUUID& id, LLMotionConstructor create )
 {
     return mMotionController.registerMotion(id, create);
 }
@@ -147,7 +147,7 @@ LLMotion* LLCharacter::createMotion( const LLUUID &id )
 //-----------------------------------------------------------------------------
 // startMotion()
 //-----------------------------------------------------------------------------
-BOOL LLCharacter::startMotion(const LLUUID &id, F32 start_offset)
+bool LLCharacter::startMotion(const LLUUID &id, F32 start_offset)
 {
     return mMotionController.startMotion(id, start_offset);
 }
@@ -156,7 +156,7 @@ BOOL LLCharacter::startMotion(const LLUUID &id, F32 start_offset)
 //-----------------------------------------------------------------------------
 // stopMotion()
 //-----------------------------------------------------------------------------
-BOOL LLCharacter::stopMotion(const LLUUID& id, BOOL stop_immediate)
+bool LLCharacter::stopMotion(const LLUUID& id, bool stop_immediate)
 {
     return mMotionController.stopMotionLocally(id, stop_immediate);
 }
@@ -164,7 +164,7 @@ BOOL LLCharacter::stopMotion(const LLUUID& id, BOOL stop_immediate)
 //-----------------------------------------------------------------------------
 // isMotionActive()
 //-----------------------------------------------------------------------------
-BOOL LLCharacter::isMotionActive(const LLUUID& id)
+bool LLCharacter::isMotionActive(const LLUUID& id)
 {
     LLMotion *motionp = mMotionController.findMotion(id);
     if (motionp)
@@ -172,7 +172,7 @@ BOOL LLCharacter::isMotionActive(const LLUUID& id)
         return mMotionController.isMotionActive(motionp);
     }
 
-    return FALSE;
+    return false;
 }
 
 
@@ -279,22 +279,22 @@ void LLCharacter::removeAnimationData(std::string name)
 //-----------------------------------------------------------------------------
 // setVisualParamWeight()
 //-----------------------------------------------------------------------------
-BOOL LLCharacter::setVisualParamWeight(const LLVisualParam* which_param, F32 weight)
+bool LLCharacter::setVisualParamWeight(const LLVisualParam* which_param, F32 weight)
 {
     S32 index = which_param->getID();
     visual_param_index_map_t::iterator index_iter = mVisualParamIndexMap.find(index);
     if (index_iter != mVisualParamIndexMap.end())
     {
         index_iter->second->setWeight(weight);
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
 // setVisualParamWeight()
 //-----------------------------------------------------------------------------
-BOOL LLCharacter::setVisualParamWeight(const char* param_name, F32 weight)
+bool LLCharacter::setVisualParamWeight(const char* param_name, F32 weight)
 {
     std::string tname(param_name);
     LLStringUtil::toLower(tname);
@@ -303,25 +303,25 @@ BOOL LLCharacter::setVisualParamWeight(const char* param_name, F32 weight)
     if (name_iter != mVisualParamNameMap.end())
     {
         name_iter->second->setWeight(weight);
-        return TRUE;
+        return true;
     }
     LL_WARNS() << "LLCharacter::setVisualParamWeight() Invalid visual parameter: " << param_name << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
 // setVisualParamWeight()
 //-----------------------------------------------------------------------------
-BOOL LLCharacter::setVisualParamWeight(S32 index, F32 weight)
+bool LLCharacter::setVisualParamWeight(S32 index, F32 weight)
 {
     visual_param_index_map_t::iterator index_iter = mVisualParamIndexMap.find(index);
     if (index_iter != mVisualParamIndexMap.end())
     {
         index_iter->second->setWeight(weight);
-        return TRUE;
+        return true;
     }
     LL_WARNS() << "LLCharacter::setVisualParamWeight() Invalid visual parameter index: " << index << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
diff --git a/indra/llcharacter/llcharacter.h b/indra/llcharacter/llcharacter.h
index b186b9052e..b390960a75 100644
--- a/indra/llcharacter/llcharacter.h
+++ b/indra/llcharacter/llcharacter.h
@@ -125,7 +125,7 @@ public:
     //-------------------------------------------------------------------------
     // registers a motion with the character
     // returns true if successfull
-    BOOL registerMotion( const LLUUID& id, LLMotionConstructor create );
+    bool registerMotion( const LLUUID& id, LLMotionConstructor create );
 
     void removeMotion( const LLUUID& id );
 
@@ -137,13 +137,13 @@ public:
 
     // start a motion
     // returns true if successful, false if an error occurred
-    virtual BOOL startMotion( const LLUUID& id, F32 start_offset = 0.f);
+    virtual bool startMotion( const LLUUID& id, F32 start_offset = 0.f);
 
     // stop a motion
-    virtual BOOL stopMotion( const LLUUID& id, BOOL stop_immediate = FALSE );
+    virtual bool stopMotion( const LLUUID& id, bool stop_immediate = false );
 
     // is this motion active?
-    BOOL isMotionActive( const LLUUID& id );
+    bool isMotionActive( const LLUUID& id );
 
     // Event handler for motion deactivation.
     // Called when a motion has completely stopped and has been deactivated.
@@ -156,7 +156,7 @@ public:
     void updateMotions(e_update_t update_type);
 
     LLAnimPauseRequest requestPause();
-    BOOL areAnimationsPaused() const { return mMotionController.isPaused(); }
+    bool areAnimationsPaused() const { return mMotionController.isPaused(); }
     void setAnimTimeFactor(F32 factor) { mMotionController.setTimeFactor(factor); }
     void setTimeStep(F32 time_step) { mMotionController.setTimeStep(time_step); }
 
@@ -190,9 +190,9 @@ public:
     void addVisualParam(LLVisualParam *param);
     void addSharedVisualParam(LLVisualParam *param);
 
-    virtual BOOL setVisualParamWeight(const LLVisualParam *which_param, F32 weight);
-    virtual BOOL setVisualParamWeight(const char* param_name, F32 weight);
-    virtual BOOL setVisualParamWeight(S32 index, F32 weight);
+    virtual bool setVisualParamWeight(const LLVisualParam *which_param, F32 weight);
+    virtual bool setVisualParamWeight(const char* param_name, F32 weight);
+    virtual bool setVisualParamWeight(S32 index, F32 weight);
 
     // get visual param weight by param or name
     F32 getVisualParamWeight(LLVisualParam *distortion);
@@ -256,7 +256,7 @@ public:
     void            setSkeletonSerialNum( U32 num ) { mSkeletonSerialNum = num; }
 
     static std::vector< LLCharacter* > sInstances;
-    static BOOL sAllowInstancesChange ; //debug use
+    static bool sAllowInstancesChange ; //debug use
 
     virtual void    setHoverOffset(const LLVector3& hover_offset, bool send_update=true) { mHoverOffset = hover_offset; }
     const LLVector3& getHoverOffset() const { return mHoverOffset; }
diff --git a/indra/llcharacter/lleditingmotion.cpp b/indra/llcharacter/lleditingmotion.cpp
index b46f210d2b..9fb2a931f9 100644
--- a/indra/llcharacter/lleditingmotion.cpp
+++ b/indra/llcharacter/lleditingmotion.cpp
@@ -141,7 +141,7 @@ LLMotion::LLMotionInitStatus LLEditingMotion::onInitialize(LLCharacter *characte
 //-----------------------------------------------------------------------------
 // LLEditingMotion::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLEditingMotion::onActivate()
+bool LLEditingMotion::onActivate()
 {
     // propagate joint positions to kinematic chain
     // SL-315
@@ -155,25 +155,25 @@ BOOL LLEditingMotion::onActivate()
     mShoulderJoint.setRotation( mShoulderState->getJoint()->getRotation() );
     mElbowJoint.setRotation(    mElbowState->getJoint()->getRotation() );
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // LLEditingMotion::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLEditingMotion::onUpdate(F32 time, U8* joint_mask)
+bool LLEditingMotion::onUpdate(F32 time, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED;
     LLVector3 focus_pt;
     LLVector3* pointAtPt = (LLVector3*)mCharacter->getAnimationData("PointAtPoint");
 
 
-    BOOL result = TRUE;
+    bool result = true;
 
     if (!pointAtPt)
     {
         focus_pt = mLastSelectPt;
-        result = FALSE;
+        result = false;
     }
     else
     {
diff --git a/indra/llcharacter/lleditingmotion.h b/indra/llcharacter/lleditingmotion.h
index f8834ebdea..f94756d43d 100644
--- a/indra/llcharacter/lleditingmotion.h
+++ b/indra/llcharacter/lleditingmotion.h
@@ -69,7 +69,7 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() { return TRUE; }
+    virtual bool getLoop() { return true; }
 
     // motions must report their total duration
     virtual F32 getDuration() { return 0.0; }
@@ -94,14 +94,14 @@ public:
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate();
+    virtual bool onActivate();
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask);
 
     // called when a motion is deactivated
     virtual void onDeactivate();
diff --git a/indra/llcharacter/llgesture.cpp b/indra/llcharacter/llgesture.cpp
index 8533605c2d..b69462ce28 100644
--- a/indra/llcharacter/llgesture.cpp
+++ b/indra/llcharacter/llgesture.cpp
@@ -91,17 +91,17 @@ const LLGesture &LLGesture::operator =(const LLGesture &rhs)
 }
 
 
-BOOL LLGesture::trigger(KEY key, MASK mask)
+bool LLGesture::trigger(KEY key, MASK mask)
 {
     LL_WARNS() << "Parent class trigger called: you probably didn't mean this." << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
 
-BOOL LLGesture::trigger(const std::string& trigger_string)
+bool LLGesture::trigger(const std::string& trigger_string)
 {
     LL_WARNS() << "Parent class trigger called: you probably didn't mean this." << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
 // NOT endian-neutral
@@ -189,12 +189,12 @@ void LLGestureList::deleteAll()
 // Iterates through space delimited tokens in string, triggering any gestures found.
 // Generates a revised string that has the found tokens replaced by their replacement strings
 // and (as a minor side effect) has multiple spaces in a row replaced by single spaces.
-BOOL LLGestureList::triggerAndReviseString(const std::string &string, std::string* revised_string)
+bool LLGestureList::triggerAndReviseString(const std::string &string, std::string* revised_string)
 {
     std::string tokenized = string;
 
-    BOOL found_gestures = FALSE;
-    BOOL first_token = TRUE;
+    bool found_gestures = false;
+    bool first_token = true;
 
     typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
     boost::char_separator<char> sep(" ");
@@ -235,7 +235,7 @@ BOOL LLGestureList::triggerAndReviseString(const std::string &string, std::strin
                         }
 
                     }
-                    found_gestures = TRUE;
+                    found_gestures = true;
                     break;
                 }
                 gesture = NULL;
@@ -251,14 +251,14 @@ BOOL LLGestureList::triggerAndReviseString(const std::string &string, std::strin
             revised_string->append( cur_token );
         }
 
-        first_token = FALSE;
+        first_token = false;
     }
     return found_gestures;
 }
 
 
 
-BOOL LLGestureList::trigger(KEY key, MASK mask)
+bool LLGestureList::trigger(KEY key, MASK mask)
 {
     for (U32 i = 0; i < mList.size(); i++)
     {
@@ -267,7 +267,7 @@ BOOL LLGestureList::trigger(KEY key, MASK mask)
         {
             if (gesture->trigger(key, mask))
             {
-                return TRUE;
+                return true;
             }
         }
         else
@@ -275,14 +275,14 @@ BOOL LLGestureList::trigger(KEY key, MASK mask)
             LL_WARNS() << "NULL gesture in gesture list (" << i << ")" << LL_ENDL;
         }
     }
-    return FALSE;
+    return false;
 }
 
 // NOT endian-neutral
 U8 *LLGestureList::serialize(U8 *buffer) const
 {
     // a single S32 serves as the header that tells us how many to read
-    U32 count = mList.size();
+    auto count = mList.size();
     htolememcpy(buffer, &count, MVT_S32, 4);
     buffer += sizeof(count);
 
diff --git a/indra/llcharacter/llgesture.h b/indra/llcharacter/llgesture.h
index 4e7fb6d1cc..f8504d06d2 100644
--- a/indra/llcharacter/llgesture.h
+++ b/indra/llcharacter/llgesture.h
@@ -55,10 +55,10 @@ public:
     const std::string&  getOutputString() const { return mOutputString; }
 
     // Triggers if a key/mask matches it
-    virtual BOOL trigger(KEY key, MASK mask);
+    virtual bool trigger(KEY key, MASK mask);
 
     // Triggers if case-insensitive substring matches (assumes string is lowercase)
-    virtual BOOL trigger(const std::string &string);
+    virtual bool trigger(const std::string &string);
 
     // non-endian-neutral serialization
     U8 *serialize(U8 *buffer) const;
@@ -84,13 +84,13 @@ public:
     virtual ~LLGestureList();
 
     // Triggers if a key/mask matches one in the list
-    BOOL trigger(KEY key, MASK mask);
+    bool trigger(KEY key, MASK mask);
 
     // Triggers if substring matches and generates revised string.
-    BOOL triggerAndReviseString(const std::string &string, std::string* revised_string);
+    bool triggerAndReviseString(const std::string &string, std::string* revised_string);
 
     // Used for construction from UI
-    S32 count() const                       { return mList.size(); }
+    S32 count() const                       { return static_cast<S32>(mList.size()); }
     virtual LLGesture* get(S32 i) const     { return mList.at(i); }
     virtual void put(LLGesture* gesture)    { mList.push_back( gesture ); }
     void deleteAll();
diff --git a/indra/llcharacter/llhandmotion.cpp b/indra/llcharacter/llhandmotion.cpp
index 5fc98a4b4d..2c03ded841 100644
--- a/indra/llcharacter/llhandmotion.cpp
+++ b/indra/llcharacter/llhandmotion.cpp
@@ -98,7 +98,7 @@ LLMotion::LLMotionInitStatus LLHandMotion::onInitialize(LLCharacter *character)
 //-----------------------------------------------------------------------------
 // LLHandMotion::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLHandMotion::onActivate()
+bool LLHandMotion::onActivate()
 {
     LLPolyMesh *upperBodyMesh = mCharacter->getUpperBodyMesh();
 
@@ -112,14 +112,14 @@ BOOL LLHandMotion::onActivate()
         mCharacter->setVisualParamWeight(gHandPoseNames[mCurrentPose], 1.f);
         mCharacter->updateVisualParams();
     }
-    return TRUE;
+    return true;
 }
 
 
 //-----------------------------------------------------------------------------
 // LLHandMotion::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLHandMotion::onUpdate(F32 time, U8* joint_mask)
+bool LLHandMotion::onUpdate(F32 time, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED;
     eHandPose *requestedHandPose;
@@ -233,7 +233,7 @@ BOOL LLHandMotion::onUpdate(F32 time, U8* joint_mask)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
diff --git a/indra/llcharacter/llhandmotion.h b/indra/llcharacter/llhandmotion.h
index a88a2aa85a..42f3411148 100644
--- a/indra/llcharacter/llhandmotion.h
+++ b/indra/llcharacter/llhandmotion.h
@@ -82,7 +82,7 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() { return TRUE; }
+    virtual bool getLoop() { return true; }
 
     // motions must report their total duration
     virtual F32 getDuration() { return 0.0; }
@@ -107,19 +107,19 @@ public:
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate();
+    virtual bool onActivate();
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask);
 
     // called when a motion is deactivated
     virtual void onDeactivate();
 
-    virtual BOOL canDeprecate() { return FALSE; }
+    virtual bool canDeprecate() { return false; }
 
     static std::string getHandPoseName(eHandPose pose);
     static eHandPose getHandPose(std::string posename);
diff --git a/indra/llcharacter/llheadrotmotion.cpp b/indra/llcharacter/llheadrotmotion.cpp
index 55acb12490..6169647423 100644
--- a/indra/llcharacter/llheadrotmotion.cpp
+++ b/indra/llcharacter/llheadrotmotion.cpp
@@ -164,16 +164,16 @@ LLMotion::LLMotionInitStatus LLHeadRotMotion::onInitialize(LLCharacter *characte
 //-----------------------------------------------------------------------------
 // LLHeadRotMotion::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLHeadRotMotion::onActivate()
+bool LLHeadRotMotion::onActivate()
 {
-    return TRUE;
+    return true;
 }
 
 
 //-----------------------------------------------------------------------------
 // LLHeadRotMotion::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLHeadRotMotion::onUpdate(F32 time, U8* joint_mask)
+bool LLHeadRotMotion::onUpdate(F32 time, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
     LLQuaternion    targetHeadRotWorld;
@@ -251,7 +251,7 @@ BOOL LLHeadRotMotion::onUpdate(F32 time, U8* joint_mask)
         mHeadState->setRotation( nlerp(1.f - NECK_LAG, LLQuaternion::DEFAULT, head_rot_local));
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -279,7 +279,7 @@ LLEyeMotion::LLEyeMotion(const LLUUID &id) : LLMotion(id)
     mEyeLookAwayPitch = 0.f;
 
     mEyeBlinkTime = 0.f;
-    mEyesClosed = FALSE;
+    mEyesClosed = false;
 
     mHeadJoint = NULL;
 
@@ -362,9 +362,9 @@ LLMotion::LLMotionInitStatus LLEyeMotion::onInitialize(LLCharacter *character)
 //-----------------------------------------------------------------------------
 // LLEyeMotion::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLEyeMotion::onActivate()
+bool LLEyeMotion::onActivate()
 {
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -373,7 +373,7 @@ BOOL LLEyeMotion::onActivate()
 void LLEyeMotion::adjustEyeTarget(LLVector3* targetPos, LLJointState& left_eye_state, LLJointState& right_eye_state)
 {
     // Compute eye rotation.
-    BOOL has_eye_target = FALSE;
+    bool has_eye_target = false;
     LLQuaternion    target_eye_rot;
     LLVector3       eye_look_at;
     F32             vergence;
@@ -385,7 +385,7 @@ void LLEyeMotion::adjustEyeTarget(LLVector3* targetPos, LLJointState& left_eye_s
         LLVector3       up;
 
         eye_look_at = *targetPos;
-        has_eye_target = TRUE;
+        has_eye_target = true;
         F32 lookAtDistance = eye_look_at.normVec();
 
         left.setVec(skyward % eye_look_at);
@@ -457,7 +457,7 @@ void LLEyeMotion::adjustEyeTarget(LLVector3* targetPos, LLJointState& left_eye_s
 //-----------------------------------------------------------------------------
 // LLEyeMotion::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLEyeMotion::onUpdate(F32 time, U8* joint_mask)
+bool LLEyeMotion::onUpdate(F32 time, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
     //calculate jitter
@@ -505,7 +505,7 @@ BOOL LLEyeMotion::onUpdate(F32 time, U8* joint_mask)
 
         if (rightEyeBlinkMorph == 1.f)
         {
-            mEyesClosed = TRUE;
+            mEyesClosed = true;
             mEyeBlinkTime = EYE_BLINK_CLOSE_TIME;
             mEyeBlinkTimer.reset();
         }
@@ -525,7 +525,7 @@ BOOL LLEyeMotion::onUpdate(F32 time, U8* joint_mask)
 
             if (rightEyeBlinkMorph == 0.f)
             {
-                mEyesClosed = FALSE;
+                mEyesClosed = false;
                 mEyeBlinkTime = EYE_BLINK_MIN_TIME + ll_frand(EYE_BLINK_MAX_TIME - EYE_BLINK_MIN_TIME);
                 mEyeBlinkTimer.reset();
             }
@@ -537,7 +537,7 @@ BOOL LLEyeMotion::onUpdate(F32 time, U8* joint_mask)
     adjustEyeTarget(targetPos, *mLeftEyeState, *mRightEyeState);
     adjustEyeTarget(targetPos, *mAltLeftEyeState, *mAltRightEyeState);
 
-    return TRUE;
+    return true;
 }
 
 
diff --git a/indra/llcharacter/llheadrotmotion.h b/indra/llcharacter/llheadrotmotion.h
index 3239008b92..50de4ffa26 100644
--- a/indra/llcharacter/llheadrotmotion.h
+++ b/indra/llcharacter/llheadrotmotion.h
@@ -64,7 +64,7 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() { return TRUE; }
+    virtual bool getLoop() { return true; }
 
     // motions must report their total duration
     virtual F32 getDuration() { return 0.0; }
@@ -89,14 +89,14 @@ public:
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate();
+    virtual bool onActivate();
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask);
 
     // called when a motion is deactivated
     virtual void onDeactivate();
@@ -147,7 +147,7 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() { return TRUE; }
+    virtual bool getLoop() { return true; }
 
     // motions must report their total duration
     virtual F32 getDuration() { return 0.0; }
@@ -172,16 +172,16 @@ public:
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate();
+    virtual bool onActivate();
 
     void adjustEyeTarget(LLVector3* targetPos, LLJointState& left_eye_state, LLJointState& right_eye_state);
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask);
 
     // called when a motion is deactivated
     virtual void onDeactivate();
@@ -209,7 +209,7 @@ public:
     // eye blinking
     LLFrameTimer        mEyeBlinkTimer;
     F32                 mEyeBlinkTime;
-    BOOL                mEyesClosed;
+    bool                mEyesClosed;
 };
 
 #endif // LL_LLHEADROTMOTION_H
diff --git a/indra/llcharacter/lljoint.cpp b/indra/llcharacter/lljoint.cpp
index 4e66777c11..c2a10d969f 100644
--- a/indra/llcharacter/lljoint.cpp
+++ b/indra/llcharacter/lljoint.cpp
@@ -76,7 +76,7 @@ void LLVector3OverrideMap::showJointVector3Overrides( std::ostringstream& os ) c
 
 U32 LLVector3OverrideMap::count() const
 {
-    return m_map.size();
+    return static_cast<U32>(m_map.size());
 }
 
 void LLVector3OverrideMap::add(const LLUUID& mesh_id, const LLVector3& pos)
@@ -86,7 +86,7 @@ void LLVector3OverrideMap::add(const LLUUID& mesh_id, const LLVector3& pos)
 
 bool LLVector3OverrideMap::remove(const LLUUID& mesh_id)
 {
-    U32 remove_count = m_map.erase(mesh_id);
+    auto remove_count = m_map.erase(mesh_id);
     return (remove_count > 0);
 }
 
@@ -105,10 +105,10 @@ void LLJoint::init()
 {
     mName = "unnamed";
     mParent = NULL;
-    mXform.setScaleChildOffset(TRUE);
+    mXform.setScaleChildOffset(true);
     mXform.setScale(LLVector3(1.0f, 1.0f, 1.0f));
     mDirtyFlags = MATRIX_DIRTY | ROTATION_DIRTY | POSITION_DIRTY;
-    mUpdateXform = TRUE;
+    mUpdateXform = true;
     mSupport = SUPPORT_BASE;
     mEnd = LLVector3(0.0f, 0.0f, 0.0f);
 }
@@ -135,7 +135,7 @@ LLJoint::LLJoint(const std::string &name, LLJoint *parent) :
     mJointNum(-2)
 {
     init();
-    mUpdateXform = FALSE;
+    mUpdateXform = false;
 
     setName(name);
     if (parent)
@@ -996,7 +996,7 @@ void LLJoint::updateWorldMatrix()
     if (mDirtyFlags & MATRIX_DIRTY)
     {
         sNumUpdates++;
-        mXform.updateMatrix(FALSE);
+        mXform.updateMatrix(false);
         mWorldMatrix.loadu(mXform.getWorldMatrix());
         mDirtyFlags = 0x0;
     }
diff --git a/indra/llcharacter/lljoint.h b/indra/llcharacter/lljoint.h
index 1f08c9c91c..763c1e3865 100644
--- a/indra/llcharacter/lljoint.h
+++ b/indra/llcharacter/lljoint.h
@@ -40,21 +40,21 @@
 #include "xform.h"
 #include "llmatrix4a.h"
 
-const S32 LL_CHARACTER_MAX_JOINTS_PER_MESH = 15;
+constexpr S32 LL_CHARACTER_MAX_JOINTS_PER_MESH = 15;
 // Need to set this to count of animate-able joints,
 // currently = #bones + #collision_volumes + #attachments + 2,
 // rounded to next multiple of 4.
-const U32 LL_CHARACTER_MAX_ANIMATED_JOINTS = 216; // must be divisible by 4!
-const U32 LL_MAX_JOINTS_PER_MESH_OBJECT = 110;
+constexpr U32 LL_CHARACTER_MAX_ANIMATED_JOINTS = 216; // must be divisible by 4!
+constexpr U32 LL_MAX_JOINTS_PER_MESH_OBJECT = 110;
 
 // These should be higher than the joint_num of any
 // other joint, to avoid conflicts in updateMotionsByType()
-const U32 LL_HAND_JOINT_NUM = (LL_CHARACTER_MAX_ANIMATED_JOINTS-1);
-const U32 LL_FACE_JOINT_NUM = (LL_CHARACTER_MAX_ANIMATED_JOINTS-2);
-const S32 LL_CHARACTER_MAX_PRIORITY = 7;
-const F32 LL_MAX_PELVIS_OFFSET = 5.f;
+constexpr U32 LL_HAND_JOINT_NUM = (LL_CHARACTER_MAX_ANIMATED_JOINTS-1);
+constexpr U32 LL_FACE_JOINT_NUM = (LL_CHARACTER_MAX_ANIMATED_JOINTS-2);
+constexpr S32 LL_CHARACTER_MAX_PRIORITY = 7;
+constexpr F32 LL_MAX_PELVIS_OFFSET = 5.f;
 
-const F32 LL_JOINT_TRESHOLD_POS_OFFSET = 0.0001f; //0.1 mm
+constexpr F32 LL_JOINT_TRESHOLD_POS_OFFSET = 0.0001f; //0.1 mm
 
 class LLVector3OverrideMap
 {
@@ -133,7 +133,7 @@ protected:
 
 public:
     U32             mDirtyFlags;
-    BOOL            mUpdateXform;
+    bool            mUpdateXform;
 
     // describes the skin binding pose
     LLVector3       mSkinOffset;
@@ -280,7 +280,7 @@ public:
 
     void clampRotation(LLQuaternion old_rot, LLQuaternion new_rot);
 
-    virtual BOOL isAnimatable() const { return TRUE; }
+    virtual bool isAnimatable() const { return true; }
 
     void addAttachmentPosOverride( const LLVector3& pos, const LLUUID& mesh_id, const std::string& av_info, bool& active_override_changed );
     void removeAttachmentPosOverride( const LLUUID& mesh_id, const std::string& av_info, bool& active_override_changed );
diff --git a/indra/llcharacter/lljointsolverrp3.cpp b/indra/llcharacter/lljointsolverrp3.cpp
index 6ec04bdb00..626029059e 100644
--- a/indra/llcharacter/lljointsolverrp3.cpp
+++ b/indra/llcharacter/lljointsolverrp3.cpp
@@ -53,9 +53,9 @@ LLJointSolverRP3::LLJointSolverRP3()
     mLengthAB = 1.0f;
     mLengthBC = 1.0f;
     mPoleVector.setVec( 1.0f, 0.0f, 0.0f );
-    mbUseBAxis = FALSE;
+    mbUseBAxis = false;
     mTwist = 0.0f;
-    mFirstTime = TRUE;
+    mFirstTime = true;
 }
 
 
@@ -114,7 +114,7 @@ void LLJointSolverRP3::setBAxis( const LLVector3& bAxis )
 {
     mBAxis = bAxis;
     mBAxis.normVec();
-    mbUseBAxis = TRUE;
+    mbUseBAxis = true;
 }
 
 //-----------------------------------------------------------------------------
diff --git a/indra/llcharacter/lljointsolverrp3.h b/indra/llcharacter/lljointsolverrp3.h
index d6080a1ab2..b5c8e24a64 100644
--- a/indra/llcharacter/lljointsolverrp3.h
+++ b/indra/llcharacter/lljointsolverrp3.h
@@ -97,11 +97,11 @@ protected:
 
     LLVector3   mPoleVector;
     LLVector3   mBAxis;
-    BOOL        mbUseBAxis;
+    bool        mbUseBAxis;
 
     F32         mTwist;
 
-    BOOL        mFirstTime;
+    bool        mFirstTime;
     LLMatrix4   mSavedJointAMat;
     LLMatrix4   mSavedInvPlaneMat;
 
diff --git a/indra/llcharacter/lljointstate.h b/indra/llcharacter/lljointstate.h
index 584b123046..1b17400200 100644
--- a/indra/llcharacter/lljointstate.h
+++ b/indra/llcharacter/lljointstate.h
@@ -80,7 +80,7 @@ public:
     // joint that this state is applied to
     LLJoint* getJoint()             { return mJoint; }
     const LLJoint* getJoint() const { return mJoint; }
-    BOOL setJoint( LLJoint *joint ) { mJoint = joint; return mJoint != NULL; }
+    bool setJoint( LLJoint *joint ) { mJoint = joint; return mJoint != NULL; }
 
     // transform type (bitwise flags can be combined)
     // Note that these are set automatically when various
diff --git a/indra/llcharacter/llkeyframefallmotion.cpp b/indra/llcharacter/llkeyframefallmotion.cpp
index ba00ee8984..82ffc87843 100644
--- a/indra/llcharacter/llkeyframefallmotion.cpp
+++ b/indra/llcharacter/llkeyframefallmotion.cpp
@@ -91,7 +91,7 @@ LLMotion::LLMotionInitStatus LLKeyframeFallMotion::onInitialize(LLCharacter *cha
 //-----------------------------------------------------------------------------
 // LLKeyframeFallMotion::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeFallMotion::onActivate()
+bool LLKeyframeFallMotion::onActivate()
 {
     LLVector3 ground_pos;
     LLVector3 ground_normal;
@@ -119,10 +119,10 @@ BOOL LLKeyframeFallMotion::onActivate()
 //-----------------------------------------------------------------------------
 // LLKeyframeFallMotion::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeFallMotion::onUpdate(F32 activeTime, U8* joint_mask)
+bool LLKeyframeFallMotion::onUpdate(F32 activeTime, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
-    BOOL result = LLKeyframeMotion::onUpdate(activeTime, joint_mask);
+    bool result = LLKeyframeMotion::onUpdate(activeTime, joint_mask);
     F32  slerp_amt = clamp_rescale(activeTime / getDuration(), 0.5f, 0.75f, 0.f, 1.f);
 
     if (mPelvisState.notNull())
diff --git a/indra/llcharacter/llkeyframefallmotion.h b/indra/llcharacter/llkeyframefallmotion.h
index b0136d302f..8049aff328 100644
--- a/indra/llcharacter/llkeyframefallmotion.h
+++ b/indra/llcharacter/llkeyframefallmotion.h
@@ -60,9 +60,9 @@ public:
     // animation callbacks to be implemented by subclasses
     //-------------------------------------------------------------------------
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
-    virtual BOOL onActivate();
+    virtual bool onActivate();
     virtual F32 getEaseInDuration();
-    virtual BOOL onUpdate(F32 activeTime, U8* joint_mask);
+    virtual bool onUpdate(F32 activeTime, U8* joint_mask);
 
 protected:
     //-------------------------------------------------------------------------
diff --git a/indra/llcharacter/llkeyframemotion.cpp b/indra/llcharacter/llkeyframemotion.cpp
index 10d35c4527..12212efb66 100644
--- a/indra/llcharacter/llkeyframemotion.cpp
+++ b/indra/llcharacter/llkeyframemotion.cpp
@@ -66,7 +66,7 @@ static F32 MAX_CONSTRAINTS = 10;
 //-----------------------------------------------------------------------------
 LLKeyframeMotion::JointMotionList::JointMotionList()
     : mDuration(0.f),
-      mLoop(FALSE),
+      mLoop(false),
       mLoopInPoint(0.f),
       mLoopOutPoint(0.f),
       mEaseInDuration(0.f),
@@ -430,8 +430,9 @@ void LLKeyframeMotion::JointMotion::update(LLJointState* joint_state, F32 time,
 //-----------------------------------------------------------------------------
 LLKeyframeMotion::LLKeyframeMotion(const LLUUID &id)
     : LLMotion(id),
-        mJointMotionList(NULL),
-        mPelvisp(NULL),
+        mJointMotionList(nullptr),
+        mPelvisp(nullptr),
+        mCharacter(nullptr),
         mLastSkeletonSerialNum(0),
         mLastUpdateTime(0.f),
         mLastLoopedTime(0.f),
@@ -505,11 +506,12 @@ LLMotion::LLMotionInitStatus LLKeyframeMotion::onInitialize(LLCharacter *charact
                                         LLAssetType::AT_ANIMATION,
                                         onLoadComplete,
                                         (void*)character_id,
-                                        FALSE);
+                                        false);
         }
         else
         {
-            LL_INFOS("Animation") << "Attempted to fetch animation " << mName << " with null id for character " << mCharacter->getID() << LL_ENDL;
+            LL_INFOS("Animation") << "Attempted to fetch animation '" << mName << "' with null id"
+                << " for character " << mCharacter->getID() << LL_ENDL;
         }
 
         return STATUS_HOLD;
@@ -565,7 +567,7 @@ LLMotion::LLMotionInitStatus LLKeyframeMotion::onInitialize(LLCharacter *charact
     U8 *anim_data;
     S32 anim_file_size;
 
-    BOOL success = FALSE;
+    bool success = false;
     LLFileSystem* anim_file = new LLFileSystem(mID, LLAssetType::AT_ANIMATION);
     if (!anim_file || !anim_file->getSize())
     {
@@ -620,7 +622,7 @@ LLMotion::LLMotionInitStatus LLKeyframeMotion::onInitialize(LLCharacter *charact
 //-----------------------------------------------------------------------------
 // setupPose()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeMotion::setupPose()
+bool LLKeyframeMotion::setupPose()
 {
     // add all valid joint states to the pose
     for (U32 jm=0; jm<mJointMotionList->getNumJointMotions(); jm++)
@@ -645,7 +647,7 @@ BOOL LLKeyframeMotion::setupPose()
         mPelvisp = mCharacter->getJoint("mPelvis");
         if (!mPelvisp)
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -653,34 +655,33 @@ BOOL LLKeyframeMotion::setupPose()
     setLoopIn(mJointMotionList->mLoopInPoint);
     setLoopOut(mJointMotionList->mLoopOutPoint);
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // LLKeyframeMotion::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeMotion::onActivate()
+bool LLKeyframeMotion::onActivate()
 {
     // If the keyframe anim has an associated emote, trigger it.
-    if( mJointMotionList->mEmoteName.length() > 0 )
+    if (mJointMotionList->mEmoteID.notNull())
     {
-        LLUUID emote_anim_id = gAnimLibrary.stringToAnimState(mJointMotionList->mEmoteName);
         // don't start emote if already active to avoid recursion
-        if (!mCharacter->isMotionActive(emote_anim_id))
+        if (!mCharacter->isMotionActive(mJointMotionList->mEmoteID))
         {
-            mCharacter->startMotion( emote_anim_id );
+            mCharacter->startMotion(mJointMotionList->mEmoteID);
         }
     }
 
     mLastLoopedTime = 0.f;
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // LLKeyframeMotion::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeMotion::onUpdate(F32 time, U8* joint_mask)
+bool LLKeyframeMotion::onUpdate(F32 time, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
     // llassert(time >= 0.f);       // This will fire
@@ -869,7 +870,7 @@ void LLKeyframeMotion::initializeConstraint(JointConstraint* constraint)
 void LLKeyframeMotion::activateConstraint(JointConstraint* constraint)
 {
     JointConstraintSharedData *shared_data = constraint->mSharedData;
-    constraint->mActive = TRUE;
+    constraint->mActive = true;
     S32 joint_num;
 
     // grab ground position if we need to
@@ -901,17 +902,17 @@ void LLKeyframeMotion::deactivateConstraint(JointConstraint *constraintp)
 {
     if (constraintp->mSourceVolume)
     {
-        constraintp->mSourceVolume->mUpdateXform = FALSE;
+        constraintp->mSourceVolume->mUpdateXform = false;
     }
 
     if (constraintp->mSharedData->mConstraintTargetType != CONSTRAINT_TARGET_TYPE_GROUND)
     {
         if (constraintp->mTargetVolume)
         {
-            constraintp->mTargetVolume->mUpdateXform = FALSE;
+            constraintp->mTargetVolume->mUpdateXform = false;
         }
     }
-    constraintp->mActive = FALSE;
+    constraintp->mActive = false;
 }
 
 //-----------------------------------------------------------------------------
@@ -1088,9 +1089,9 @@ void LLKeyframeMotion::applyConstraint(JointConstraint* constraint, F32 time, U8
             // convert intermediate joint positions to world coordinates
             positions[joint_num] = ( constraint->mPositions[joint_num] * mPelvisp->getWorldRotation()) + mPelvisp->getWorldPosition();
             F32 time_constant = 1.f / clamp_rescale(constraint->mFixupDistanceRMS, 0.f, 0.5f, 0.2f, 8.f);
-//          LL_INFOS() << "Interpolant " << LLSmoothInterpolation::getInterpolant(time_constant, FALSE) << " and fixup distance " << constraint->mFixupDistanceRMS << " on " << mCharacter->findCollisionVolume(shared_data->mSourceConstraintVolume)->getName() << LL_ENDL;
+//          LL_INFOS() << "Interpolant " << LLSmoothInterpolation::getInterpolant(time_constant, false) << " and fixup distance " << constraint->mFixupDistanceRMS << " on " << mCharacter->findCollisionVolume(shared_data->mSourceConstraintVolume)->getName() << LL_ENDL;
             positions[joint_num] = lerp(positions[joint_num], kinematic_position,
-                LLSmoothInterpolation::getInterpolant(time_constant, FALSE));
+                LLSmoothInterpolation::getInterpolant(time_constant, false));
         }
 
         S32 iteration_count;
@@ -1225,9 +1226,9 @@ void LLKeyframeMotion::applyConstraint(JointConstraint* constraint, F32 time, U8
 // allow_invalid_joints should be true when handling existing content, to avoid breakage.
 // During upload, we should be more restrictive and reject such animations.
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, bool allow_invalid_joints)
+bool LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, bool allow_invalid_joints)
 {
-    BOOL old_version = FALSE;
+    bool old_version = false;
     std::unique_ptr<LLKeyframeMotion::JointMotionList> joint_motion_list(new LLKeyframeMotion::JointMotionList);
 
     //-------------------------------------------------------------------------
@@ -1237,39 +1238,47 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
     U16 version;
     U16 sub_version;
 
+    // Amimation identifier for log messages
+    auto asset = [&]() -> std::string
+        {
+            return asset_id.asString() + ", char " + mCharacter->getID().asString();
+        };
+
     if (!dp.unpackU16(version, "version"))
     {
-        LL_WARNS() << "can't read version number for animation " << asset_id << LL_ENDL;
-        return FALSE;
+        LL_WARNS() << "can't read version number"
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     if (!dp.unpackU16(sub_version, "sub_version"))
     {
-        LL_WARNS() << "can't read sub version number for animation " << asset_id << LL_ENDL;
-        return FALSE;
+        LL_WARNS() << "can't read sub version number"
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     if (version == 0 && sub_version == 1)
     {
-        old_version = TRUE;
+        old_version = true;
     }
     else if (version != KEYFRAME_MOTION_VERSION || sub_version != KEYFRAME_MOTION_SUBVERSION)
     {
 #if LL_RELEASE
         LL_WARNS() << "Bad animation version " << version << "." << sub_version
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
 #else
         LL_ERRS() << "Bad animation version " << version << "." << sub_version
-                  << " for animation " << asset_id << LL_ENDL;
+                  << " for animation " << asset() << LL_ENDL;
 #endif
     }
 
     if (!dp.unpackS32(temp_priority, "base_priority"))
     {
         LL_WARNS() << "can't read animation base_priority"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
     joint_motion_list->mBasePriority = (LLJoint::JointPriority) temp_priority;
 
@@ -1281,8 +1290,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
     else if (joint_motion_list->mBasePriority < LLJoint::USE_MOTION_PRIORITY)
     {
         LL_WARNS() << "bad animation base_priority " << joint_motion_list->mBasePriority
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     //-------------------------------------------------------------------------
@@ -1291,16 +1300,16 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
     if (!dp.unpackF32(joint_motion_list->mDuration, "duration"))
     {
         LL_WARNS() << "can't read duration"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     if (joint_motion_list->mDuration > MAX_ANIM_DURATION ||
         !llfinite(joint_motion_list->mDuration))
     {
         LL_WARNS() << "invalid animation duration"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     //-------------------------------------------------------------------------
@@ -1308,16 +1317,34 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
     //-------------------------------------------------------------------------
     if (!dp.unpackString(joint_motion_list->mEmoteName, "emote_name"))
     {
-        LL_WARNS() << "can't read optional_emote_animation"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+        LL_WARNS() << "can't read emote_name"
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
-    if(joint_motion_list->mEmoteName==mID.asString())
+    if (!joint_motion_list->mEmoteName.empty())
     {
-        LL_WARNS() << "Malformed animation mEmoteName==mID"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+        if (joint_motion_list->mEmoteName == mID.asString())
+        {
+            LL_WARNS() << "Malformed animation mEmoteName==mID"
+                       << " for animation " << asset() << LL_ENDL;
+            return false;
+        }
+        // "Closed_Mouth" is a very popular emote name we should ignore
+        if (joint_motion_list->mEmoteName == "Closed_Mouth")
+        {
+            joint_motion_list->mEmoteName.clear();
+        }
+        else
+        {
+            joint_motion_list->mEmoteID = gAnimLibrary.stringToAnimState(joint_motion_list->mEmoteName);
+            if (joint_motion_list->mEmoteID.isNull())
+            {
+                LL_WARNS() << "unknown emote_name '" << joint_motion_list->mEmoteName << "'"
+                           << " for animation " << asset() << LL_ENDL;
+                joint_motion_list->mEmoteName.clear();
+            }
+        }
     }
 
     //-------------------------------------------------------------------------
@@ -1327,32 +1354,34 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
         !llfinite(joint_motion_list->mLoopInPoint))
     {
         LL_WARNS() << "can't read loop point"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     if (!dp.unpackF32(joint_motion_list->mLoopOutPoint, "loop_out_point") ||
         !llfinite(joint_motion_list->mLoopOutPoint))
     {
         LL_WARNS() << "can't read loop point"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
-    if (!dp.unpackS32(joint_motion_list->mLoop, "loop"))
+    S32 loop{ 0 };
+    if (!dp.unpackS32(loop, "loop"))
     {
         LL_WARNS() << "can't read loop"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
+    joint_motion_list->mLoop = static_cast<bool>(loop);
 
     //SL-17206 hack to alter Female_land loop setting, while current behavior won't be changed serverside
     LLUUID const female_land_anim("ca1baf4d-0a18-5a1f-0330-e4bd1e71f09e");
     LLUUID const formal_female_land_anim("6a9a173b-61fa-3ad5-01fa-a851cfc5f66a");
     if (female_land_anim == asset_id || formal_female_land_anim == asset_id)
     {
-        LL_WARNS() << "Animation(" << asset_id << ") won't be looped." << LL_ENDL;
-        joint_motion_list->mLoop = FALSE;
+        LL_WARNS() << "Animation " << asset() << " won't be looped." << LL_ENDL;
+        joint_motion_list->mLoop = false;
     }
 
     //-------------------------------------------------------------------------
@@ -1362,16 +1391,16 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
         !llfinite(joint_motion_list->mEaseInDuration))
     {
         LL_WARNS() << "can't read easeIn"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     if (!dp.unpackF32(joint_motion_list->mEaseOutDuration, "ease_out_duration") ||
         !llfinite(joint_motion_list->mEaseOutDuration))
     {
         LL_WARNS() << "can't read easeOut"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     //-------------------------------------------------------------------------
@@ -1381,15 +1410,15 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
     if (!dp.unpackU32(word, "hand_pose"))
     {
         LL_WARNS() << "can't read hand pose"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
-    if(word > LLHandMotion::NUM_HAND_POSES)
+    if (word > LLHandMotion::NUM_HAND_POSES)
     {
         LL_WARNS() << "invalid LLHandMotion::eHandPose index: " << word
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     joint_motion_list->mHandPose = (LLHandMotion::eHandPose)word;
@@ -1398,26 +1427,26 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
     // get number of joint motions
     //-------------------------------------------------------------------------
     U32 num_motions = 0;
-    S32 rotation_dupplicates = 0;
-    S32 position_dupplicates = 0;
+    S32 rotation_duplicates = 0;
+    S32 position_duplicates = 0;
     if (!dp.unpackU32(num_motions, "num_joints"))
     {
         LL_WARNS() << "can't read number of joints"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     if (num_motions == 0)
     {
         LL_WARNS() << "no joints"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
     else if (num_motions > LL_CHARACTER_MAX_ANIMATED_JOINTS)
     {
         LL_WARNS() << "too many joints"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     joint_motion_list->mJointMotionArray.clear();
@@ -1429,7 +1458,7 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
     // initialize joint motions
     //-------------------------------------------------------------------------
 
-    for(U32 i=0; i<num_motions; ++i)
+    for (U32 i = 0; i < num_motions; ++i)
     {
         JointMotion* joint_motion = new JointMotion;
         joint_motion_list->mJointMotionArray.push_back(joint_motion);
@@ -1438,15 +1467,15 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
         if (!dp.unpackString(joint_name, "joint_name"))
         {
             LL_WARNS() << "can't read joint name"
-                       << " for animation " << asset_id << LL_ENDL;
-            return FALSE;
+                       << " for animation " << asset() << LL_ENDL;
+            return false;
         }
 
         if (joint_name == "mScreen" || joint_name == "mRoot")
         {
             LL_WARNS() << "attempted to animate special " << joint_name << " joint"
-                       << " for animation " << asset_id << LL_ENDL;
-            return FALSE;
+                       << " for animation " << asset() << LL_ENDL;
+            return false;
         }
 
         //---------------------------------------------------------------------
@@ -1463,17 +1492,17 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                 LL_WARNS() << "Joint will be omitted from animation: joint_num " << joint_num
                            << " is outside of legal range [0-"
                            << LL_CHARACTER_MAX_ANIMATED_JOINTS << ") for joint " << joint->getName()
-                           << " for animation " << asset_id << LL_ENDL;
+                           << " for animation " << asset() << LL_ENDL;
                 joint = NULL;
             }
         }
         else
         {
             LL_WARNS() << "invalid joint name: " << joint_name
-                       << " for animation " << asset_id << LL_ENDL;
+                       << " for animation " << asset() << LL_ENDL;
             if (!allow_invalid_joints)
             {
-                return FALSE;
+                return false;
             }
         }
 
@@ -1491,15 +1520,15 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
         if (!dp.unpackS32(joint_priority, "joint_priority"))
         {
             LL_WARNS() << "can't read joint priority."
-                       << " for animation " << asset_id << LL_ENDL;
-            return FALSE;
+                       << " for animation " << asset() << LL_ENDL;
+            return false;
         }
 
         if (joint_priority < LLJoint::USE_MOTION_PRIORITY)
         {
             LL_WARNS() << "joint priority unknown - too low."
-                       << " for animation " << asset_id << LL_ENDL;
-            return FALSE;
+                       << " for animation " << asset() << LL_ENDL;
+            return false;
         }
 
         joint_motion->mPriority = (LLJoint::JointPriority)joint_priority;
@@ -1517,8 +1546,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
         if (!dp.unpackS32(joint_motion->mRotationCurve.mNumKeys, "num_rot_keys") || joint_motion->mRotationCurve.mNumKeys < 0)
         {
             LL_WARNS() << "can't read number of rotation keys"
-                       << " for animation " << asset_id << LL_ENDL;
-            return FALSE;
+                       << " for animation " << asset() << LL_ENDL;
+            return false;
         }
 
         joint_motion->mRotationCurve.mInterpolationType = IT_LINEAR;
@@ -1543,8 +1572,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                     !llfinite(time))
                 {
                     LL_WARNS() << "can't read rotation key (" << k << ")"
-                               << " for animation " << asset_id << LL_ENDL;
-                    return FALSE;
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
 
             }
@@ -1553,8 +1582,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                 if (!dp.unpackU16(time_short, "time"))
                 {
                     LL_WARNS() << "can't read rotation key (" << k << ")"
-                               << " for animation " << asset_id << LL_ENDL;
-                    return FALSE;
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
 
                 time = U16_to_F32(time_short, 0.f, joint_motion_list->mDuration);
@@ -1562,8 +1591,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                 if (time < 0 || time > joint_motion_list->mDuration)
                 {
                     LL_WARNS() << "invalid frame time"
-                               << " for animation " << asset_id << LL_ENDL;
-                    return FALSE;
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
             }
 
@@ -1576,13 +1605,15 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
             {
                 if (!dp.unpackVector3(rot_angles, "rot_angles"))
                 {
-                    LL_WARNS() << "can't read rot_angles in rotation key (" << k << ")" << LL_ENDL;
-                    return FALSE;
+                    LL_WARNS() << "can't read rot_angles in rotation key (" << k << ")"
+                        << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
                 if (!rot_angles.isFinite())
                 {
-                    LL_WARNS() << "non-finite angle in rotation key (" << k << ")" << LL_ENDL;
-                    return FALSE;
+                    LL_WARNS() << "non-finite angle in rotation key (" << k << ")"
+                        << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
 
                 LLQuaternion::Order ro = StringToOrder("ZYX");
@@ -1592,18 +1623,21 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
             {
                 if (!dp.unpackU16(x, "rot_angle_x"))
                 {
-                    LL_WARNS() << "can't read rot_angle_x in rotation key (" << k << ")" << LL_ENDL;
-                    return FALSE;
+                    LL_WARNS() << "can't read rot_angle_x in rotation key (" << k << ")"
+                        << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
                 if (!dp.unpackU16(y, "rot_angle_y"))
                 {
-                    LL_WARNS() << "can't read rot_angle_y in rotation key (" << k << ")" << LL_ENDL;
-                    return FALSE;
+                    LL_WARNS() << "can't read rot_angle_y in rotation key (" << k << ")"
+                        << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
                 if (!dp.unpackU16(z, "rot_angle_z"))
                 {
-                    LL_WARNS() << "can't read rot_angle_z in rotation key (" << k << ")" << LL_ENDL;
-                    return FALSE;
+                    LL_WARNS() << "can't read rot_angle_z in rotation key (" << k << ")"
+                        << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
 
                 LLVector3 rot_vec;
@@ -1611,20 +1645,20 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                 rot_vec.mV[VY] = U16_to_F32(y, -1.f, 1.f);
                 rot_vec.mV[VZ] = U16_to_F32(z, -1.f, 1.f);
 
-                if(!rot_vec.isFinite())
+                if (!rot_vec.isFinite())
                 {
                     LL_WARNS() << "non-finite angle in rotation key (" << k << ")"
-                        << " for animation " << asset_id << LL_ENDL;
-                    return FALSE;
+                        << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
                 rot_key.mRotation.unpackFromVector3(rot_vec);
             }
 
-            if(!rot_key.mRotation.isFinite())
+            if (!rot_key.mRotation.isFinite())
             {
                 LL_WARNS() << "non-finite angle in rotation key (" << k << ")"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             rCurve->mKeys[time] = rot_key;
@@ -1632,8 +1666,10 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
 
         if (joint_motion->mRotationCurve.mNumKeys > joint_motion->mRotationCurve.mKeys.size())
         {
-            rotation_dupplicates++;
-            LL_INFOS() << "Motion: " << asset_id << " had dupplicate rotation keys that were removed" << LL_ENDL;
+            rotation_duplicates++;
+            LL_INFOS() << "Motion " << asset() << " had duplicated rotation keys that were removed: "
+                << joint_motion->mRotationCurve.mNumKeys << " > " << joint_motion->mRotationCurve.mKeys.size()
+                << " (" << rotation_duplicates << ")" << LL_ENDL;
         }
 
         //---------------------------------------------------------------------
@@ -1642,8 +1678,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
         if (!dp.unpackS32(joint_motion->mPositionCurve.mNumKeys, "num_pos_keys") || joint_motion->mPositionCurve.mNumKeys < 0)
         {
             LL_WARNS() << "can't read number of position keys"
-                       << " for animation " << asset_id << LL_ENDL;
-            return FALSE;
+                       << " for animation " << asset() << LL_ENDL;
+            return false;
         }
 
         joint_motion->mPositionCurve.mInterpolationType = IT_LINEAR;
@@ -1656,7 +1692,7 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
         // scan position curve keys
         //---------------------------------------------------------------------
         PositionCurve *pCurve = &joint_motion->mPositionCurve;
-        BOOL is_pelvis = joint_motion->mJointName == "mPelvis";
+        bool is_pelvis = joint_motion->mJointName == "mPelvis";
         for (S32 k = 0; k < joint_motion->mPositionCurve.mNumKeys; k++)
         {
             U16 time_short;
@@ -1668,8 +1704,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                     !llfinite(pos_key.mTime))
                 {
                     LL_WARNS() << "can't read position key (" << k << ")"
-                               << " for animation " << asset_id << LL_ENDL;
-                    return FALSE;
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
             }
             else
@@ -1677,8 +1713,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                 if (!dp.unpackU16(time_short, "time"))
                 {
                     LL_WARNS() << "can't read position key (" << k << ")"
-                               << " for animation " << asset_id << LL_ENDL;
-                    return FALSE;
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
 
                 pos_key.mTime = U16_to_F32(time_short, 0.f, joint_motion_list->mDuration);
@@ -1688,8 +1724,9 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
             {
                 if (!dp.unpackVector3(pos_key.mPosition, "pos"))
                 {
-                    LL_WARNS() << "can't read pos in position key (" << k << ")" << LL_ENDL;
-                    return FALSE;
+                    LL_WARNS() << "can't read pos in position key (" << k << ")"
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
 
                 //MAINT-6162
@@ -1704,18 +1741,21 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
 
                 if (!dp.unpackU16(x, "pos_x"))
                 {
-                    LL_WARNS() << "can't read pos_x in position key (" << k << ")" << LL_ENDL;
-                    return FALSE;
+                    LL_WARNS() << "can't read pos_x in position key (" << k << ")"
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
                 if (!dp.unpackU16(y, "pos_y"))
                 {
-                    LL_WARNS() << "can't read pos_y in position key (" << k << ")" << LL_ENDL;
-                    return FALSE;
+                    LL_WARNS() << "can't read pos_y in position key (" << k << ")"
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
                 if (!dp.unpackU16(z, "pos_z"))
                 {
-                    LL_WARNS() << "can't read pos_z in position key (" << k << ")" << LL_ENDL;
-                    return FALSE;
+                    LL_WARNS() << "can't read pos_z in position key (" << k << ")"
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
 
                 pos_key.mPosition.mV[VX] = U16_to_F32(x, -LL_MAX_PELVIS_OFFSET, LL_MAX_PELVIS_OFFSET);
@@ -1723,11 +1763,11 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                 pos_key.mPosition.mV[VZ] = U16_to_F32(z, -LL_MAX_PELVIS_OFFSET, LL_MAX_PELVIS_OFFSET);
             }
 
-            if(!pos_key.mPosition.isFinite())
+            if (!pos_key.mPosition.isFinite())
             {
                 LL_WARNS() << "non-finite position in key"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             pCurve->mKeys[pos_key.mTime] = pos_key;
@@ -1740,20 +1780,25 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
 
         if (joint_motion->mPositionCurve.mNumKeys > joint_motion->mPositionCurve.mKeys.size())
         {
-            position_dupplicates++;
+            position_duplicates++;
+            LL_INFOS() << "Motion " << asset() << " had duplicated position keys that were removed: "
+                << joint_motion->mPositionCurve.mNumKeys << " > " << joint_motion->mPositionCurve.mKeys.size()
+                << " (" << position_duplicates << ")" << LL_ENDL;
         }
 
         joint_motion->mUsage = joint_state->getUsage();
     }
 
-    if (rotation_dupplicates > 0)
+    if (rotation_duplicates > 0)
     {
-        LL_INFOS() << "Motion: " << asset_id << " had " << rotation_dupplicates << " dupplicate rotation keys that were removed" << LL_ENDL;
+        LL_INFOS() << "Motion " << asset() << " had " << rotation_duplicates
+            << " duplicated rotation keys that were removed" << LL_ENDL;
     }
 
-    if (position_dupplicates > 0)
+    if (position_duplicates > 0)
     {
-        LL_INFOS() << "Motion: " << asset_id << " had " << position_dupplicates << " dupplicate position keys that were removed" << LL_ENDL;
+        LL_INFOS() << "Motion " << asset() << " had " << position_duplicates
+            << " duplicated position keys that were removed" << LL_ENDL;
     }
 
     //-------------------------------------------------------------------------
@@ -1763,14 +1808,14 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
     if (!dp.unpackS32(num_constraints, "num_constraints"))
     {
         LL_WARNS() << "can't read number of constraints"
-                   << " for animation " << asset_id << LL_ENDL;
-        return FALSE;
+                   << " for animation " << asset() << LL_ENDL;
+        return false;
     }
 
     if (num_constraints > MAX_CONSTRAINTS || num_constraints < 0)
     {
         LL_WARNS() << "Bad number of constraints... ignoring: " << num_constraints
-                   << " for animation " << asset_id << LL_ENDL;
+                   << " for animation " << asset() << LL_ENDL;
     }
     else
     {
@@ -1787,30 +1832,30 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
             if (!dp.unpackU8(byte, "chain_length"))
             {
                 LL_WARNS() << "can't read constraint chain length"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
             constraintp->mChainLength = (S32) byte;
 
             if((U32)constraintp->mChainLength > joint_motion_list->getNumJointMotions())
             {
                 LL_WARNS() << "invalid constraint chain length"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if (!dp.unpackU8(byte, "constraint_type"))
             {
                 LL_WARNS() << "can't read constraint type"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if( byte >= NUM_CONSTRAINT_TYPES )
             {
                 LL_WARNS() << "invalid constraint type"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
             constraintp->mConstraintType = (EConstraintType)byte;
 
@@ -1819,8 +1864,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
             if (!dp.unpackBinaryDataFixed(bin_data, BIN_DATA_LENGTH, "source_volume"))
             {
                 LL_WARNS() << "can't read source volume name"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             bin_data[BIN_DATA_LENGTH] = 0; // Ensure null termination
@@ -1829,29 +1874,29 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
             if (constraintp->mSourceConstraintVolume == -1)
             {
                 LL_WARNS() << "not a valid source constraint volume " << str
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if (!dp.unpackVector3(constraintp->mSourceConstraintOffset, "source_offset"))
             {
                 LL_WARNS() << "can't read constraint source offset"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if( !(constraintp->mSourceConstraintOffset.isFinite()) )
             {
                 LL_WARNS() << "non-finite constraint source offset"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if (!dp.unpackBinaryDataFixed(bin_data, BIN_DATA_LENGTH, "target_volume"))
             {
                 LL_WARNS() << "can't read target volume name"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             bin_data[BIN_DATA_LENGTH] = 0; // Ensure null termination
@@ -1868,78 +1913,78 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                 if (constraintp->mTargetConstraintVolume == -1)
                 {
                     LL_WARNS() << "not a valid target constraint volume " << str
-                               << " for animation " << asset_id << LL_ENDL;
-                    return FALSE;
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
             }
 
             if (!dp.unpackVector3(constraintp->mTargetConstraintOffset, "target_offset"))
             {
                 LL_WARNS() << "can't read constraint target offset"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if( !(constraintp->mTargetConstraintOffset.isFinite()) )
             {
                 LL_WARNS() << "non-finite constraint target offset"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if (!dp.unpackVector3(constraintp->mTargetConstraintDir, "target_dir"))
             {
                 LL_WARNS() << "can't read constraint target direction"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if( !(constraintp->mTargetConstraintDir.isFinite()) )
             {
                 LL_WARNS() << "non-finite constraint target direction"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if (!constraintp->mTargetConstraintDir.isExactlyZero())
             {
-                constraintp->mUseTargetOffset = TRUE;
+                constraintp->mUseTargetOffset = true;
     //          constraintp->mTargetConstraintDir *= constraintp->mSourceConstraintOffset.magVec();
             }
 
             if (!dp.unpackF32(constraintp->mEaseInStartTime, "ease_in_start") || !llfinite(constraintp->mEaseInStartTime))
             {
                 LL_WARNS() << "can't read constraint ease in start time"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if (!dp.unpackF32(constraintp->mEaseInStopTime, "ease_in_stop") || !llfinite(constraintp->mEaseInStopTime))
             {
                 LL_WARNS() << "can't read constraint ease in stop time"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if (!dp.unpackF32(constraintp->mEaseOutStartTime, "ease_out_start") || !llfinite(constraintp->mEaseOutStartTime))
             {
                 LL_WARNS() << "can't read constraint ease out start time"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             if (!dp.unpackF32(constraintp->mEaseOutStopTime, "ease_out_stop") || !llfinite(constraintp->mEaseOutStopTime))
             {
                 LL_WARNS() << "can't read constraint ease out stop time"
-                           << " for animation " << asset_id << LL_ENDL;
-                return FALSE;
+                           << " for animation " << asset() << LL_ENDL;
+                return false;
             }
 
             LLJoint* joint = mCharacter->findCollisionVolume(constraintp->mSourceConstraintVolume);
             // get joint to which this collision volume is attached
             if (!joint)
             {
-                return FALSE;
+                return false;
             }
 
             constraintp->mJointStateIndices = new S32[constraintp->mChainLength + 1]; // note: mChainLength is size-limited - comes from a byte
@@ -1951,8 +1996,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                 {
                     LL_WARNS() << "Joint with no parent: " << joint->getName()
                                << " Emote: " << joint_motion_list->mEmoteName
-                               << " for animation " << asset_id << LL_ENDL;
-                    return FALSE;
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
                 joint = parent;
                 constraintp->mJointStateIndices[i] = -1;
@@ -1963,8 +2008,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                     if ( !constraint_joint )
                     {
                         LL_WARNS() << "Invalid joint " << j
-                                   << " for animation " << asset_id << LL_ENDL;
-                        return FALSE;
+                                   << " for animation " << asset() << LL_ENDL;
+                        return false;
                     }
 
                     if(constraint_joint == joint)
@@ -1976,8 +2021,8 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
                 if (constraintp->mJointStateIndices[i] < 0 )
                 {
                     LL_WARNS() << "No joint index for constraint " << i
-                               << " for animation " << asset_id << LL_ENDL;
-                    return FALSE;
+                               << " for animation " << asset() << LL_ENDL;
+                    return false;
                 }
             }
 
@@ -1992,15 +2037,15 @@ BOOL LLKeyframeMotion::deserialize(LLDataPacker& dp, const LLUUID& asset_id, boo
 
     setupPose();
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // serialize()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeMotion::serialize(LLDataPacker& dp) const
+bool LLKeyframeMotion::serialize(LLDataPacker& dp) const
 {
-    BOOL success = TRUE;
+    bool success = true;
 
     LL_DEBUGS("BVH") << "serializing" << LL_ENDL;
 
@@ -2035,7 +2080,7 @@ BOOL LLKeyframeMotion::serialize(LLDataPacker& dp) const
         JointMotion* joint_motionp = mJointMotionList->getJointMotion(i);
         success &= dp.packString(joint_motionp->mJointName, "joint_name");
         success &= dp.packS32(joint_motionp->mPriority, "joint_priority");
-        success &= dp.packS32(joint_motionp->mRotationCurve.mKeys.size(), "num_rot_keys");
+        success &= dp.packS32(static_cast<S32>(joint_motionp->mRotationCurve.mKeys.size()), "num_rot_keys");
 
         LL_DEBUGS("BVH") << "Joint " << i
             << " name: " << joint_motionp->mJointName
@@ -2061,7 +2106,7 @@ BOOL LLKeyframeMotion::serialize(LLDataPacker& dp) const
             LL_DEBUGS("BVH") << "  rot: t " << rot_key.mTime << " angles " << rot_angles.mV[VX] <<","<< rot_angles.mV[VY] <<","<< rot_angles.mV[VZ] << LL_ENDL;
         }
 
-        success &= dp.packS32(joint_motionp->mPositionCurve.mKeys.size(), "num_pos_keys");
+        success &= dp.packS32(static_cast<S32>(joint_motionp->mPositionCurve.mKeys.size()), "num_pos_keys");
         for (PositionCurve::key_map_t::value_type& pos_pair : joint_motionp->mPositionCurve.mKeys)
         {
             PositionKey& pos_key = pos_pair.second;
@@ -2081,7 +2126,7 @@ BOOL LLKeyframeMotion::serialize(LLDataPacker& dp) const
         }
     }
 
-    success &= dp.packS32(mJointMotionList->mConstraints.size(), "num_constraints");
+    success &= dp.packS32(static_cast<S32>(mJointMotionList->mConstraints.size()), "num_constraints");
     LL_DEBUGS("BVH") << "num_constraints " << mJointMotionList->mConstraints.size() << LL_ENDL;
     for (JointConstraintSharedData* shared_constraintp : mJointMotionList->mConstraints)
     {
@@ -2241,10 +2286,12 @@ void LLKeyframeMotion::setEmote(const LLUUID& emote_id)
     if (emote_name)
     {
         mJointMotionList->mEmoteName = emote_name;
+        mJointMotionList->mEmoteID = emote_id;
     }
     else
     {
-        mJointMotionList->mEmoteName = "";
+        mJointMotionList->mEmoteName.clear();
+        mJointMotionList->mEmoteID.setNull();
     }
 }
 
@@ -2283,7 +2330,7 @@ void LLKeyframeMotion::flushKeyframeCache()
 //-----------------------------------------------------------------------------
 // setLoop()
 //-----------------------------------------------------------------------------
-void LLKeyframeMotion::setLoop(BOOL loop)
+void LLKeyframeMotion::setLoop(bool loop)
 {
     if (mJointMotionList)
     {
@@ -2515,7 +2562,7 @@ LLKeyframeMotion::JointConstraint::JointConstraint(JointConstraintSharedData* sh
 {
     mWeight = 0.f;
     mTotalLength = 0.f;
-    mActive = FALSE;
+    mActive = false;
     mSourceVolume = NULL;
     mTargetVolume = NULL;
     mFixupDistanceRMS = 0.f;
diff --git a/indra/llcharacter/llkeyframemotion.h b/indra/llcharacter/llkeyframemotion.h
index b1c4f5afb7..d5b27c8102 100644
--- a/indra/llcharacter/llkeyframemotion.h
+++ b/indra/llcharacter/llkeyframemotion.h
@@ -86,9 +86,9 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() {
+    virtual bool getLoop() {
         if (mJointMotionList) return mJointMotionList->mLoop;
-        else return FALSE;
+        else return false;
     }
 
     // motions must report their total duration
@@ -135,14 +135,14 @@ public:
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate();
+    virtual bool onActivate();
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask);
 
     // called when a motion is deactivated
     virtual void onDeactivate();
@@ -155,14 +155,14 @@ public:
 
 public:
     U32     getFileSize();
-    BOOL    serialize(LLDataPacker& dp) const;
-    BOOL    deserialize(LLDataPacker& dp, const LLUUID& asset_id, bool allow_invalid_joints = true);
-    BOOL    isLoaded() { return mJointMotionList != NULL; }
+    bool    serialize(LLDataPacker& dp) const;
+    bool    deserialize(LLDataPacker& dp, const LLUUID& asset_id, bool allow_invalid_joints = true);
+    bool    isLoaded() { return mJointMotionList != NULL; }
     bool    dumpToFile(const std::string& name);
 
 
     // setters for modifying a keyframe animation
-    void setLoop(BOOL loop);
+    void setLoop(bool loop);
 
     F32 getLoopIn() {
         return (mJointMotionList) ? mJointMotionList->mLoopInPoint : 0.f;
@@ -211,7 +211,7 @@ protected:
             mEaseInStopTime(0.f),
             mEaseOutStartTime(0.f),
             mEaseOutStopTime(0.f),
-            mUseTargetOffset(FALSE),
+            mUseTargetOffset(false),
             mConstraintType(CONSTRAINT_TYPE_POINT),
             mConstraintTargetType(CONSTRAINT_TARGET_TYPE_BODY),
             mSourceConstraintVolume(0),
@@ -231,7 +231,7 @@ protected:
         F32                     mEaseInStopTime;
         F32                     mEaseOutStartTime;
         F32                     mEaseOutStopTime;
-        BOOL                    mUseTargetOffset;
+        bool                    mUseTargetOffset;
         EConstraintType         mConstraintType;
         EConstraintTargetType   mConstraintTargetType;
     };
@@ -251,7 +251,7 @@ protected:
         LLVector3                   mPositions[MAX_CHAIN_LENGTH];
         F32                         mJointLengths[MAX_CHAIN_LENGTH];
         F32                         mJointLengthFractions[MAX_CHAIN_LENGTH];
-        BOOL                        mActive;
+        bool                        mActive;
         LLVector3d                  mGroundPos;
         LLVector3                   mGroundNorm;
         LLJoint*                    mSourceVolume;
@@ -271,7 +271,7 @@ protected:
 
     void applyConstraint(JointConstraint* constraintp, F32 time, U8* joint_mask);
 
-    BOOL    setupPose();
+    bool    setupPose();
 
 public:
     enum AssetStatus { ASSET_LOADED, ASSET_FETCHED, ASSET_NEEDS_FETCH, ASSET_FETCH_FAILED, ASSET_UNDEFINED };
@@ -398,7 +398,7 @@ public:
     public:
         std::vector<JointMotion*> mJointMotionArray;
         F32                     mDuration;
-        BOOL                    mLoop;
+        bool                    mLoop;
         F32                     mLoopInPoint;
         F32                     mLoopOutPoint;
         F32                     mEaseInDuration;
@@ -413,12 +413,14 @@ public:
         // TODO: LLKeyframeDataCache::getKeyframeData should probably return a class containing
         // JointMotionList and mEmoteName, see LLKeyframeMotion::onInitialize.
         std::string             mEmoteName;
+        LLUUID                  mEmoteID;
+
     public:
         JointMotionList();
         ~JointMotionList();
         U32 dumpDiagInfo();
         JointMotion* getJointMotion(U32 index) const { llassert(index < mJointMotionArray.size()); return mJointMotionArray[index]; }
-        U32 getNumJointMotions() const { return mJointMotionArray.size(); }
+        U32 getNumJointMotions() const { return static_cast<U32>(mJointMotionArray.size()); }
     };
 
 protected:
diff --git a/indra/llcharacter/llkeyframemotionparam.cpp b/indra/llcharacter/llkeyframemotionparam.cpp
index 3082d30897..e4552b96c9 100644
--- a/indra/llcharacter/llkeyframemotionparam.cpp
+++ b/indra/llcharacter/llkeyframemotionparam.cpp
@@ -133,7 +133,7 @@ LLMotion::LLMotionInitStatus LLKeyframeMotionParam::onInitialize(LLCharacter *ch
 //-----------------------------------------------------------------------------
 // LLKeyframeMotionParam::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeMotionParam::onActivate()
+bool LLKeyframeMotionParam::onActivate()
 {
     for (motion_map_t::value_type& motion_pair : mParameterizedMotions)
     {
@@ -143,14 +143,14 @@ BOOL LLKeyframeMotionParam::onActivate()
             paramMotion.mMotion->activate(mActivationTimestamp);
         }
     }
-    return TRUE;
+    return true;
 }
 
 
 //-----------------------------------------------------------------------------
 // LLKeyframeMotionParam::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeMotionParam::onUpdate(F32 time, U8* joint_mask)
+bool LLKeyframeMotionParam::onUpdate(F32 time, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED;
     F32 weightFactor = 1.f / (F32)mParameterizedMotions.size();
@@ -262,7 +262,7 @@ BOOL LLKeyframeMotionParam::onUpdate(F32 time, U8* joint_mask)
 
     LL_INFOS() << "Param Motion weight " << mPoseBlender.getBlendedPose()->getWeight() << LL_ENDL;
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -283,13 +283,13 @@ void LLKeyframeMotionParam::onDeactivate()
 //-----------------------------------------------------------------------------
 // LLKeyframeMotionParam::addKeyframeMotion()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeMotionParam::addKeyframeMotion(char *name, const LLUUID &id, char *param, F32 value)
+bool LLKeyframeMotionParam::addKeyframeMotion(char *name, const LLUUID &id, char *param, F32 value)
 {
     LLMotion *newMotion = mCharacter->createMotion( id );
 
     if (!newMotion)
     {
-        return FALSE;
+        return false;
     }
 
     newMotion->setName(name);
@@ -297,7 +297,7 @@ BOOL LLKeyframeMotionParam::addKeyframeMotion(char *name, const LLUUID &id, char
     // now add motion to this list
     mParameterizedMotions[param].insert(ParameterizedMotion(newMotion, value));
 
-    return TRUE;
+    return true;
 }
 
 
@@ -322,7 +322,7 @@ void LLKeyframeMotionParam::setDefaultKeyframeMotion(char *name)
 //-----------------------------------------------------------------------------
 // loadMotions()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeMotionParam::loadMotions()
+bool LLKeyframeMotionParam::loadMotions()
 {
     //-------------------------------------------------------------------------
     // Load named file by concatenating the character prefix with the motion name.
@@ -344,7 +344,7 @@ BOOL LLKeyframeMotionParam::loadMotions()
     if (!fp || fileSize == 0)
     {
         LL_INFOS() << "ERROR: can't open: " << path << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // allocate a text buffer
@@ -383,7 +383,7 @@ BOOL LLKeyframeMotionParam::loadMotions()
     if ( error )
     {
         LL_INFOS() << "ERROR: error while reading from " << path << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     LL_INFOS() << "Loading parametric keyframe data for: " << getName() << LL_ENDL;
@@ -401,7 +401,7 @@ BOOL LLKeyframeMotionParam::loadMotions()
     //-------------------------------------------------------------------------
     // get priority
     //-------------------------------------------------------------------------
-    BOOL isFirstMotion = TRUE;
+    bool isFirstMotion = true;
     num = sscanf(p, "%79s %79s %f", strA, strB, &floatA);   /* Flawfinder: ignore */
 
     while(1)
@@ -410,13 +410,13 @@ BOOL LLKeyframeMotionParam::loadMotions()
         if ((num != 3))
         {
             LL_INFOS() << "WARNING: can't read parametric motion" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         addKeyframeMotion(strA, gAnimLibrary.stringToAnimState(std::string(strA)), strB, floatA);
         if (isFirstMotion)
         {
-            isFirstMotion = FALSE;
+            isFirstMotion = false;
             setDefaultKeyframeMotion(strA);
         }
 
@@ -430,7 +430,7 @@ BOOL LLKeyframeMotionParam::loadMotions()
         num = sscanf(p, "%79s %79s %f", strA, strB, &floatA);   /* Flawfinder: ignore */
     }
 
-    return TRUE;
+    return true;
 }
 
 // End
diff --git a/indra/llcharacter/llkeyframemotionparam.h b/indra/llcharacter/llkeyframemotionparam.h
index c906a25ceb..8c57766e9b 100644
--- a/indra/llcharacter/llkeyframemotionparam.h
+++ b/indra/llcharacter/llkeyframemotionparam.h
@@ -67,8 +67,8 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() {
-        return TRUE;
+    virtual bool getLoop() {
+        return true;
     }
 
     // motions must report their total duration
@@ -102,14 +102,14 @@ public:
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate();
+    virtual bool onActivate();
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask);
 
     // called when a motion is deactivated
     virtual void onDeactivate();
@@ -128,12 +128,12 @@ protected:
     };
 
     // add a motion and associated parameter triplet
-    BOOL addKeyframeMotion(char *name, const LLUUID &id, char *param, F32 value);
+    bool addKeyframeMotion(char *name, const LLUUID &id, char *param, F32 value);
 
     // set default motion for LOD and retrieving blend constants
     void setDefaultKeyframeMotion(char *);
 
-    BOOL loadMotions();
+    bool loadMotions();
 
 protected:
     //-------------------------------------------------------------------------
diff --git a/indra/llcharacter/llkeyframestandmotion.cpp b/indra/llcharacter/llkeyframestandmotion.cpp
index 16f4cdc115..a882ab3563 100644
--- a/indra/llcharacter/llkeyframestandmotion.cpp
+++ b/indra/llcharacter/llkeyframestandmotion.cpp
@@ -46,7 +46,7 @@ const F32 POSITION_THRESHOLD = 0.1f;
 //-----------------------------------------------------------------------------
 LLKeyframeStandMotion::LLKeyframeStandMotion(const LLUUID &id) : LLKeyframeMotion(id)
 {
-    mFlipFeet = FALSE;
+    mFlipFeet = false;
     mCharacter = NULL;
 
     // create kinematic hierarchy
@@ -67,7 +67,7 @@ LLKeyframeStandMotion::LLKeyframeStandMotion(const LLUUID &id) : LLKeyframeMotio
     mKneeRightState =  NULL;
     mAnkleRightState =  NULL;
 
-    mTrackAnkles = TRUE;
+    mTrackAnkles = true;
 
     mFrameNum = 0;
 }
@@ -90,7 +90,7 @@ LLMotion::LLMotionInitStatus LLKeyframeStandMotion::onInitialize(LLCharacter *ch
     // save character pointer for later use
     mCharacter = character;
 
-    mFlipFeet = FALSE;
+    mFlipFeet = false;
 
     // load keyframe data, setup pose and joint states
     LLMotion::LLMotionInitStatus status = LLKeyframeMotion::onInitialize(character);
@@ -129,7 +129,7 @@ LLMotion::LLMotionInitStatus LLKeyframeStandMotion::onInitialize(LLCharacter *ch
 //-----------------------------------------------------------------------------
 // LLKeyframeStandMotion::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeStandMotion::onActivate()
+bool LLKeyframeStandMotion::onActivate()
 {
     //-------------------------------------------------------------------------
     // setup the IK solvers
@@ -158,15 +158,15 @@ void LLKeyframeStandMotion::onDeactivate()
 //-----------------------------------------------------------------------------
 // LLKeyframeStandMotion::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeStandMotion::onUpdate(F32 time, U8* joint_mask)
+bool LLKeyframeStandMotion::onUpdate(F32 time, U8* joint_mask)
 {
     //-------------------------------------------------------------------------
     // let the base class update the cycle
     //-------------------------------------------------------------------------
-    BOOL status = LLKeyframeMotion::onUpdate(time, joint_mask);
+    bool status = LLKeyframeMotion::onUpdate(time, joint_mask);
     if (!status)
     {
-        return FALSE;
+        return false;
     }
 
     LLVector3 root_world_pos = mPelvisState->getJoint()->getParent()->getWorldPosition();
@@ -174,7 +174,7 @@ BOOL LLKeyframeStandMotion::onUpdate(F32 time, U8* joint_mask)
     // have we received a valid world position for this avatar?
     if (root_world_pos.isExactlyZero())
     {
-        return TRUE;
+        return true;
     }
 
     //-------------------------------------------------------------------------
@@ -185,16 +185,16 @@ BOOL LLKeyframeStandMotion::onUpdate(F32 time, U8* joint_mask)
     {
         mLastGoodPelvisRotation = mPelvisState->getJoint()->getWorldRotation();
         mLastGoodPelvisRotation.normalize();
-        mTrackAnkles = TRUE;
+        mTrackAnkles = true;
     }
     else if ((mCharacter->getCharacterPosition() - mLastGoodPosition).magVecSquared() > POSITION_THRESHOLD)
     {
         mLastGoodPosition = mCharacter->getCharacterPosition();
-        mTrackAnkles = TRUE;
+        mTrackAnkles = true;
     }
     else if (mPose.getWeight() < 1.f)
     {
-        mTrackAnkles = TRUE;
+        mTrackAnkles = true;
     }
 
 
@@ -255,7 +255,7 @@ BOOL LLKeyframeStandMotion::onUpdate(F32 time, U8* joint_mask)
     else if (mFrameNum < 2)
     {
         mFrameNum++;
-        return TRUE;
+        return true;
     }
 
     mFrameNum++;
@@ -336,7 +336,7 @@ BOOL LLKeyframeStandMotion::onUpdate(F32 time, U8* joint_mask)
     //LL_INFOS() << "Stand drift amount " << (mCharacter->getCharacterPosition() - mLastGoodPosition).magVec() << LL_ENDL;
 
 //  LL_INFOS() << "DEBUG: " << speed << " : " << mTrackAnkles << LL_ENDL;
-    return TRUE;
+    return true;
 }
 
 // End
diff --git a/indra/llcharacter/llkeyframestandmotion.h b/indra/llcharacter/llkeyframestandmotion.h
index 2e3634828f..df458c7a0c 100644
--- a/indra/llcharacter/llkeyframestandmotion.h
+++ b/indra/llcharacter/llkeyframestandmotion.h
@@ -63,9 +63,9 @@ public:
     // animation callbacks to be implemented by subclasses
     //-------------------------------------------------------------------------
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
-    virtual BOOL onActivate();
+    virtual bool onActivate();
     void    onDeactivate();
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    virtual bool onUpdate(F32 time, U8* joint_mask);
 
 public:
     //-------------------------------------------------------------------------
@@ -85,7 +85,7 @@ public:
 
     LLCharacter *mCharacter;
 
-    BOOL                mFlipFeet;
+    bool                mFlipFeet;
 
     LLPointer<LLJointState> mPelvisState;
 
@@ -109,7 +109,7 @@ public:
 
     LLQuaternion        mLastGoodPelvisRotation;
     LLVector3           mLastGoodPosition;
-    BOOL                mTrackAnkles;
+    bool                mTrackAnkles;
 
     S32                 mFrameNum;
 } LL_ALIGN_POSTFIX(16);
diff --git a/indra/llcharacter/llkeyframewalkmotion.cpp b/indra/llcharacter/llkeyframewalkmotion.cpp
index 132fb85785..605e15f442 100644
--- a/indra/llcharacter/llkeyframewalkmotion.cpp
+++ b/indra/llcharacter/llkeyframewalkmotion.cpp
@@ -83,7 +83,7 @@ LLMotion::LLMotionInitStatus LLKeyframeWalkMotion::onInitialize(LLCharacter *cha
 //-----------------------------------------------------------------------------
 // LLKeyframeWalkMotion::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeWalkMotion::onActivate()
+bool LLKeyframeWalkMotion::onActivate()
 {
     mRealTimeLast = 0.0f;
     mAdjTimeLast = 0.0f;
@@ -103,7 +103,7 @@ void LLKeyframeWalkMotion::onDeactivate()
 //-----------------------------------------------------------------------------
 // LLKeyframeWalkMotion::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLKeyframeWalkMotion::onUpdate(F32 time, U8* joint_mask)
+bool LLKeyframeWalkMotion::onUpdate(F32 time, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED;
     // compute time since last update
@@ -174,7 +174,7 @@ LLMotion::LLMotionInitStatus LLWalkAdjustMotion::onInitialize(LLCharacter *chara
 //-----------------------------------------------------------------------------
 // LLWalkAdjustMotion::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLWalkAdjustMotion::onActivate()
+bool LLWalkAdjustMotion::onActivate()
 {
     mAnimSpeed = 0.f;
     mAdjustedSpeed = 0.f;
@@ -191,13 +191,13 @@ BOOL LLWalkAdjustMotion::onActivate()
     F32 rightAnkleOffset = (mRightAnkleJoint->getWorldPosition() - mCharacter->getCharacterPosition()).magVec();
     mAnkleOffset = llmax(leftAnkleOffset, rightAnkleOffset);
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // LLWalkAdjustMotion::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLWalkAdjustMotion::onUpdate(F32 time, U8* joint_mask)
+bool LLWalkAdjustMotion::onUpdate(F32 time, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED;
     // delta_time is guaranteed to be non zero
@@ -315,7 +315,7 @@ BOOL LLWalkAdjustMotion::onUpdate(F32 time, U8* joint_mask)
     // need to update *some* joint to keep this animation active
     mPelvisState->setPosition(mPelvisOffset);
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -362,18 +362,18 @@ LLMotion::LLMotionInitStatus LLFlyAdjustMotion::onInitialize(LLCharacter *charac
 //-----------------------------------------------------------------------------
 // LLFlyAdjustMotion::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLFlyAdjustMotion::onActivate()
+bool LLFlyAdjustMotion::onActivate()
 {
     mPelvisState->setPosition(LLVector3::zero);
     mPelvisState->setRotation(LLQuaternion::DEFAULT);
     mRoll = 0.f;
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // LLFlyAdjustMotion::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLFlyAdjustMotion::onUpdate(F32 time, U8* joint_mask)
+bool LLFlyAdjustMotion::onUpdate(F32 time, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED;
     LLVector3 ang_vel = mCharacter->getCharacterAngularVelocity() * mCharacter->getTimeDilation();
@@ -388,6 +388,6 @@ BOOL LLFlyAdjustMotion::onUpdate(F32 time, U8* joint_mask)
     LLQuaternion roll(mRoll, LLVector3(0.f, 0.f, 1.f));
     mPelvisState->setRotation(roll);
 
-    return TRUE;
+    return true;
 }
 
diff --git a/indra/llcharacter/llkeyframewalkmotion.h b/indra/llcharacter/llkeyframewalkmotion.h
index 110dbeeee3..6320c81399 100644
--- a/indra/llcharacter/llkeyframewalkmotion.h
+++ b/indra/llcharacter/llkeyframewalkmotion.h
@@ -65,9 +65,9 @@ public:
     // animation callbacks to be implemented by subclasses
     //-------------------------------------------------------------------------
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
-    virtual BOOL onActivate();
+    virtual bool onActivate();
     virtual void onDeactivate();
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    virtual bool onUpdate(F32 time, U8* joint_mask);
 
 public:
     //-------------------------------------------------------------------------
@@ -100,11 +100,11 @@ public:
     // animation callbacks to be implemented by subclasses
     //-------------------------------------------------------------------------
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
-    virtual BOOL onActivate();
+    virtual bool onActivate();
     virtual void onDeactivate();
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    virtual bool onUpdate(F32 time, U8* joint_mask);
     virtual LLJoint::JointPriority getPriority(){return LLJoint::HIGH_PRIORITY;}
-    virtual BOOL getLoop() { return TRUE; }
+    virtual bool getLoop() { return true; }
     virtual F32 getDuration() { return 0.f; }
     virtual F32 getEaseInDuration() { return 0.f; }
     virtual F32 getEaseOutDuration() { return 0.f; }
@@ -150,11 +150,11 @@ public:
     // animation callbacks to be implemented by subclasses
     //-------------------------------------------------------------------------
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
-    virtual BOOL onActivate();
+    virtual bool onActivate();
     virtual void onDeactivate() {};
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    virtual bool onUpdate(F32 time, U8* joint_mask);
     virtual LLJoint::JointPriority getPriority(){return LLJoint::HIGHER_PRIORITY;}
-    virtual BOOL getLoop() { return TRUE; }
+    virtual bool getLoop() { return true; }
     virtual F32 getDuration() { return 0.f; }
     virtual F32 getEaseInDuration() { return 0.f; }
     virtual F32 getEaseOutDuration() { return 0.f; }
diff --git a/indra/llcharacter/llmotion.cpp b/indra/llcharacter/llmotion.cpp
index 0e0df26b04..bc9f578660 100644
--- a/indra/llcharacter/llmotion.cpp
+++ b/indra/llcharacter/llmotion.cpp
@@ -43,8 +43,8 @@
 // Class Constructor
 //-----------------------------------------------------------------------------
 LLMotion::LLMotion( const LLUUID &id ) :
-    mStopped(TRUE),
-    mActive(FALSE),
+    mStopped(true),
+    mActive(false),
     mID(id),
     mActivationTimestamp(0.f),
     mStopTimestamp(0.f),
@@ -132,10 +132,10 @@ void LLMotion::setDeactivateCallback( void (*cb)(void *), void* userdata )
 void LLMotion::setStopTime(F32 time)
 {
     mStopTimestamp = time;
-    mStopped = TRUE;
+    mStopped = true;
 }
 
-BOOL LLMotion::isBlending()
+bool LLMotion::isBlending()
 {
     return mPose.getWeight() < 1.f;
 }
@@ -146,8 +146,8 @@ BOOL LLMotion::isBlending()
 void LLMotion::activate(F32 time)
 {
     mActivationTimestamp = time;
-    mStopped = FALSE;
-    mActive = TRUE;
+    mStopped = false;
+    mActive = true;
     onActivate();
 }
 
@@ -156,7 +156,7 @@ void LLMotion::activate(F32 time)
 //-----------------------------------------------------------------------------
 void LLMotion::deactivate()
 {
-    mActive = FALSE;
+    mActive = false;
     mPose.setWeight(0.f);
 
     if (mDeactivateCallback)
@@ -169,9 +169,9 @@ void LLMotion::deactivate()
     onDeactivate();
 }
 
-BOOL LLMotion::canDeprecate()
+bool LLMotion::canDeprecate()
 {
-    return TRUE;
+    return true;
 }
 
 // End
diff --git a/indra/llcharacter/llmotion.h b/indra/llcharacter/llmotion.h
index d45b8bceb6..4120de76a5 100644
--- a/indra/llcharacter/llmotion.h
+++ b/indra/llcharacter/llmotion.h
@@ -91,21 +91,21 @@ public:
 
     virtual void setStopTime(F32 time);
 
-    BOOL isStopped() const { return mStopped; }
+    bool isStopped() const { return mStopped; }
 
-    void setStopped(BOOL stopped) { mStopped = stopped; }
+    void setStopped(bool stopped) { mStopped = stopped; }
 
-    BOOL isBlending();
+    bool isBlending();
 
     // Activation functions.
     // It is OK for other classes to activate a motion,
     // but only the controller can deactivate it.
-    // Thus, if mActive == TRUE, the motion *may* be on the controllers active list,
-    // but if mActive == FALSE, the motion is gauranteed not to be on the active list.
+    // Thus, if mActive == true, the motion *may* be on the controllers active list,
+    // but if mActive == false, the motion is gauranteed not to be on the active list.
 protected:
     // Used by LLMotionController only
     void deactivate();
-    BOOL isActive() { return mActive; }
+    bool isActive() { return mActive; }
 public:
     void activate(F32 time);
 
@@ -115,7 +115,7 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() = 0;
+    virtual bool getLoop() = 0;
 
     // motions must report their total duration
     virtual F32 getDuration() = 0;
@@ -144,33 +144,33 @@ public:
     virtual LLMotionInitStatus onInitialize(LLCharacter *character) = 0;
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 activeTime, U8* joint_mask) = 0;
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 activeTime, U8* joint_mask) = 0;
 
     // called when a motion is deactivated
     virtual void onDeactivate() = 0;
 
     // can we crossfade this motion with a new instance when restarted?
-    // should ultimately always be TRUE, but lack of emote blending, etc
+    // should ultimately always be true, but lack of emote blending, etc
     // requires this
-    virtual BOOL canDeprecate();
+    virtual bool canDeprecate();
 
     // optional callback routine called when animation deactivated.
     void    setDeactivateCallback( void (*cb)(void *), void* userdata );
 
 protected:
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate() = 0;
+    virtual bool onActivate() = 0;
 
     void addJointState(const LLPointer<LLJointState>& jointState);
 
 protected:
     LLPose      mPose;
-    BOOL        mStopped;       // motion has been stopped;
-    BOOL        mActive;        // motion is on active list (can be stopped or not stopped)
+    bool        mStopped;       // motion has been stopped;
+    bool        mActive;        // motion is on active list (can be stopped or not stopped)
 
     //-------------------------------------------------------------------------
     // these are set implicitly by the motion controller and
@@ -199,7 +199,7 @@ public:
     LLTestMotion(const LLUUID &id) : LLMotion(id){}
     ~LLTestMotion() {}
     static LLMotion *create(const LLUUID& id) { return new LLTestMotion(id); }
-    BOOL getLoop() { return FALSE; }
+    bool getLoop() { return false; }
     F32 getDuration() { return 0.0f; }
     F32 getEaseInDuration() { return 0.0f; }
     F32 getEaseOutDuration() { return 0.0f; }
@@ -208,8 +208,8 @@ public:
     F32 getMinPixelArea() { return 0.f; }
 
     LLMotionInitStatus onInitialize(LLCharacter*) { LL_INFOS() << "LLTestMotion::onInitialize()" << LL_ENDL; return STATUS_SUCCESS; }
-    BOOL onActivate() { LL_INFOS() << "LLTestMotion::onActivate()" << LL_ENDL; return TRUE; }
-    BOOL onUpdate(F32 time, U8* joint_mask) { LL_INFOS() << "LLTestMotion::onUpdate(" << time << ")" << LL_ENDL; return TRUE; }
+    bool onActivate() { LL_INFOS() << "LLTestMotion::onActivate()" << LL_ENDL; return true; }
+    bool onUpdate(F32 time, U8* joint_mask) { LL_INFOS() << "LLTestMotion::onUpdate(" << time << ")" << LL_ENDL; return true; }
     void onDeactivate() { LL_INFOS() << "LLTestMotion::onDeactivate()" << LL_ENDL; }
 };
 
@@ -225,7 +225,7 @@ public:
     static LLMotion *create(const LLUUID &id) { return new LLNullMotion(id); }
 
     // motions must specify whether or not they loop
-    /*virtual*/ BOOL getLoop() { return TRUE; }
+    /*virtual*/ bool getLoop() { return true; }
 
     // motions must report their total duration
     /*virtual*/ F32 getDuration() { return 1.f; }
@@ -251,14 +251,14 @@ public:
     /*virtual*/ LLMotionInitStatus onInitialize(LLCharacter *character) { return STATUS_SUCCESS; }
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    /*virtual*/ BOOL onActivate() { return TRUE; }
+    /*virtual*/ bool onActivate() { return true; }
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    /*virtual*/ BOOL onUpdate(F32 activeTime, U8* joint_mask) { return TRUE; }
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    /*virtual*/ bool onUpdate(F32 activeTime, U8* joint_mask) { return true; }
 
     // called when a motion is deactivated
     /*virtual*/ void onDeactivate() {}
diff --git a/indra/llcharacter/llmotioncontroller.cpp b/indra/llcharacter/llmotioncontroller.cpp
index 689737a190..c204c96f6c 100644
--- a/indra/llcharacter/llmotioncontroller.cpp
+++ b/indra/llcharacter/llmotioncontroller.cpp
@@ -76,16 +76,16 @@ LLMotionRegistry::~LLMotionRegistry()
 //-----------------------------------------------------------------------------
 // addMotion()
 //-----------------------------------------------------------------------------
-BOOL LLMotionRegistry::registerMotion( const LLUUID& id, LLMotionConstructor constructor )
+bool LLMotionRegistry::registerMotion( const LLUUID& id, LLMotionConstructor constructor )
 {
     //  LL_INFOS() << "Registering motion: " << name << LL_ENDL;
     if (!is_in_map(mMotionTable, id))
     {
         mMotionTable[id] = constructor;
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
@@ -133,13 +133,13 @@ LLMotionController::LLMotionController()
       mAnimTime(0.f),
       mPrevTimerElapsed(0.f),
       mLastTime(0.0f),
-      mHasRunOnce(FALSE),
-      mPaused(FALSE),
+      mHasRunOnce(false),
+      mPaused(false),
       mPausedFrame(0),
       mTimeStep(0.f),
       mTimeStepCount(0),
       mLastInterp(0.f),
-      mIsSelf(FALSE),
+      mIsSelf(false),
       mLastCountAfterPurge(0)
 {
 }
@@ -156,11 +156,11 @@ LLMotionController::~LLMotionController()
 
 void LLMotionController::incMotionCounts(S32& num_motions, S32& num_loading_motions, S32& num_loaded_motions, S32& num_active_motions, S32& num_deprecated_motions)
 {
-    num_motions += mAllMotions.size();
-    num_loading_motions += mLoadingMotions.size();
-    num_loaded_motions += mLoadedMotions.size();
-    num_active_motions += mActiveMotions.size();
-    num_deprecated_motions += mDeprecatedMotions.size();
+    num_motions += static_cast<S32>(mAllMotions.size());
+    num_loading_motions += static_cast<S32>(mLoadingMotions.size());
+    num_loaded_motions += static_cast<S32>(mLoadedMotions.size());
+    num_active_motions += static_cast<S32>(mActiveMotions.size());
+    num_deprecated_motions += static_cast<S32>(mDeprecatedMotions.size());
 }
 
 //-----------------------------------------------------------------------------
@@ -222,7 +222,7 @@ void LLMotionController::purgeExcessMotions()
     }
 
     // clean up all inactive, loaded motions
-    for (LLUUID motion_id : motions_to_kill)
+    for (const LLUUID& motion_id : motions_to_kill)
     {
         // look up the motion again by ID to get canonical instance
         // and kill it only if that one is inactive
@@ -233,7 +233,7 @@ void LLMotionController::purgeExcessMotions()
         }
     }
 
-    U32 loaded_count = mLoadedMotions.size();
+    U32 loaded_count = static_cast<U32>(mLoadedMotions.size());
     if (loaded_count > (2 * MAX_MOTION_INSTANCES) && loaded_count > mLastCountAfterPurge)
     {
         LL_WARNS_ONCE("Animation") << loaded_count << " Loaded Motions. Amount of motions is over limit." << LL_ENDL;
@@ -275,7 +275,7 @@ void LLMotionController::setTimeStep(F32 step)
             LLMotion* motionp = *iter;
             F32 activation_time = motionp->mActivationTimestamp;
             motionp->mActivationTimestamp = (F32)(llfloor(activation_time / step)) * step;
-            BOOL stopped = motionp->isStopped();
+            bool stopped = motionp->isStopped();
             motionp->setStopTime((F32)(llfloor(motionp->getStopTime() / step)) * step);
             motionp->setStopped(stopped);
             motionp->mSendStopTimestamp = (F32)llfloor(motionp->mSendStopTimestamp / step) * step;
@@ -303,7 +303,7 @@ void LLMotionController::setCharacter(LLCharacter *character)
 //-----------------------------------------------------------------------------
 // registerMotion()
 //-----------------------------------------------------------------------------
-BOOL LLMotionController::registerMotion( const LLUUID& id, LLMotionConstructor constructor )
+bool LLMotionController::registerMotion( const LLUUID& id, LLMotionConstructor constructor )
 {
     return sRegistry.registerMotion(id, constructor);
 }
@@ -389,7 +389,7 @@ LLMotion* LLMotionController::createMotion( const LLUUID &id )
 //-----------------------------------------------------------------------------
 // startMotion()
 //-----------------------------------------------------------------------------
-BOOL LLMotionController::startMotion(const LLUUID &id, F32 start_offset)
+bool LLMotionController::startMotion(const LLUUID &id, F32 start_offset)
 {
     // do we have an instance of this motion for this character?
     LLMotion *motion = findMotion(id);
@@ -415,12 +415,12 @@ BOOL LLMotionController::startMotion(const LLUUID &id, F32 start_offset)
 
     if (!motion)
     {
-        return FALSE;
+        return false;
     }
     //if the motion is already active and allows deprecation, then let it keep playing
     else if (motion->canDeprecate() && isMotionActive(motion))
     {
-        return TRUE;
+        return true;
     }
 
 //  LL_INFOS() << "Starting motion " << name << LL_ENDL;
@@ -431,7 +431,7 @@ BOOL LLMotionController::startMotion(const LLUUID &id, F32 start_offset)
 //-----------------------------------------------------------------------------
 // stopMotionLocally()
 //-----------------------------------------------------------------------------
-BOOL LLMotionController::stopMotionLocally(const LLUUID &id, BOOL stop_immediate)
+bool LLMotionController::stopMotionLocally(const LLUUID &id, bool stop_immediate)
 {
     // if already inactive, return false
     LLMotion *motion = findMotion(id);
@@ -439,11 +439,11 @@ BOOL LLMotionController::stopMotionLocally(const LLUUID &id, BOOL stop_immediate
     return stopMotionInstance(motion, stop_immediate||mPaused);
 }
 
-BOOL LLMotionController::stopMotionInstance(LLMotion* motion, BOOL stop_immediate)
+bool LLMotionController::stopMotionInstance(LLMotion* motion, bool stop_immediate)
 {
     if (!motion)
     {
-        return FALSE;
+        return false;
     }
 
 
@@ -455,15 +455,15 @@ BOOL LLMotionController::stopMotionInstance(LLMotion* motion, BOOL stop_immediat
         {
             deactivateMotionInstance(motion);
         }
-        return TRUE;
+        return true;
     }
     else if (isMotionLoading(motion))
     {
-        motion->setStopped(TRUE);
-        return TRUE;
+        motion->setStopped(true);
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
@@ -518,7 +518,7 @@ void LLMotionController::updateIdleMotion(LLMotion* motionp)
         if (mLastTime <= motionp->mSendStopTimestamp)
         {
             mCharacter->requestStopMotion( motionp );
-            stopMotionInstance(motionp, FALSE);
+            stopMotionInstance(motionp, false);
         }
     }
     else if (mAnimTime >= motionp->mActivationTimestamp)
@@ -552,7 +552,7 @@ void LLMotionController::updateIdleActiveMotions()
 void LLMotionController::updateMotionsByType(LLMotion::LLMotionBlendType anim_type)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
-    BOOL update_result = TRUE;
+    bool update_result = true;
     U8 last_joint_signature[LL_CHARACTER_MAX_ANIMATED_JOINTS];
 
     memset(&last_joint_signature, 0, sizeof(U8) * LL_CHARACTER_MAX_ANIMATED_JOINTS);
@@ -568,11 +568,11 @@ void LLMotionController::updateMotionsByType(LLMotion::LLMotionBlendType anim_ty
             continue;
         }
 
-        BOOL update_motion = FALSE;
+        bool update_motion = false;
 
         if (motionp->getPose()->getWeight() < 1.f)
         {
-            update_motion = TRUE;
+            update_motion = true;
         }
         else
         {
@@ -584,7 +584,7 @@ void LLMotionController::updateMotionsByType(LLMotion::LLMotionBlendType anim_ty
                 if ((*current_signature | test_signature) > (*current_signature))
                 {
                     *current_signature |= test_signature;
-                    update_motion = TRUE;
+                    update_motion = true;
                 }
 
                 *((U32*)&last_joint_signature[i * 4]) = *(U32*)&(mJointSignature[1][i * 4]);
@@ -594,7 +594,7 @@ void LLMotionController::updateMotionsByType(LLMotion::LLMotionBlendType anim_ty
                 if ((*current_signature | test_signature) > (*current_signature))
                 {
                     *current_signature |= test_signature;
-                    update_motion = TRUE;
+                    update_motion = true;
                 }
             }
         }
@@ -620,7 +620,7 @@ void LLMotionController::updateMotionsByType(LLMotion::LLMotionBlendType anim_ty
                 if (mLastTime <= motionp->mSendStopTimestamp)
                 {
                     mCharacter->requestStopMotion( motionp );
-                    stopMotionInstance(motionp, FALSE);
+                    stopMotionInstance(motionp, false);
                 }
             }
 
@@ -701,7 +701,7 @@ void LLMotionController::updateMotionsByType(LLMotion::LLMotionBlendType anim_ty
                 if (mLastTime <= motionp->mSendStopTimestamp)
                 {
                     mCharacter->requestStopMotion( motionp );
-                    stopMotionInstance(motionp, FALSE);
+                    stopMotionInstance(motionp, false);
                 }
             }
 
@@ -747,12 +747,12 @@ void LLMotionController::updateMotionsByType(LLMotion::LLMotionBlendType anim_ty
                 // propagate this to the network
                 // as not all viewers are guaranteed to have access to the same logic
                 mCharacter->requestStopMotion( motionp );
-                stopMotionInstance(motionp, FALSE);
+                stopMotionInstance(motionp, false);
             }
 
         }
 
-        // even if onupdate returns FALSE, add this motion in to the blend one last time
+        // even if onupdate returns false, add this motion in to the blend one last time
         mPoseBlender.addMotion(motionp);
     }
 }
@@ -815,7 +815,7 @@ void LLMotionController::updateMotions(bool force_update)
     // The use_quantum optimization or possibly the associated code in setTimeStamp()
     // does not work as implemented.
     // Currently setting mTimeStep to nonzero is disabled elsewhere.
-    BOOL use_quantum = (mTimeStep != 0.f);
+    bool use_quantum = (mTimeStep != 0.f);
 
     // Always update mPrevTimerElapsed
     F32 cur_time = mTimer.getElapsedTimeF32();
@@ -885,7 +885,7 @@ void LLMotionController::updateMotions(bool force_update)
 
         if (use_quantum)
         {
-            mPoseBlender.blendAndCache(TRUE);
+            mPoseBlender.blendAndCache(true);
         }
         else
         {
@@ -893,7 +893,7 @@ void LLMotionController::updateMotions(bool force_update)
         }
     }
 
-    mHasRunOnce = TRUE;
+    mHasRunOnce = true;
 //  LL_INFOS() << "Motion controller time " << motionTimer.getElapsedTimeF32() << LL_ENDL;
 }
 
@@ -913,28 +913,28 @@ void LLMotionController::updateMotionsMinimal()
 
     deactivateStoppedMotions();
 
-    mHasRunOnce = TRUE;
+    mHasRunOnce = true;
 }
 
 //-----------------------------------------------------------------------------
 // activateMotionInstance()
 //-----------------------------------------------------------------------------
-BOOL LLMotionController::activateMotionInstance(LLMotion *motion, F32 time)
+bool LLMotionController::activateMotionInstance(LLMotion *motion, F32 time)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
     // It's not clear why the getWeight() line seems to be crashing this, but
     // hopefully this fixes it.
     if (motion == NULL || motion->getPose() == NULL)
     {
-        return FALSE;
+        return false;
     }
 
     if (mLoadingMotions.find(motion) != mLoadingMotions.end())
     {
         // we want to start this motion, but we can't yet, so flag it as started
-        motion->setStopped(FALSE);
+        motion->setStopped(false);
         // report pending animations as activated
-        return TRUE;
+        return true;
     }
 
     motion->mResidualWeight = motion->getPose()->getWeight();
@@ -978,13 +978,13 @@ BOOL LLMotionController::activateMotionInstance(LLMotion *motion, F32 time)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // deactivateMotionInstance()
 //-----------------------------------------------------------------------------
-BOOL LLMotionController::deactivateMotionInstance(LLMotion *motion)
+bool LLMotionController::deactivateMotionInstance(LLMotion *motion)
 {
     motion->deactivate();
 
@@ -1001,7 +1001,7 @@ BOOL LLMotionController::deactivateMotionInstance(LLMotion *motion)
         mActiveMotions.remove(motion);
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLMotionController::deprecateMotionInstance(LLMotion* motion)
@@ -1009,7 +1009,7 @@ void LLMotionController::deprecateMotionInstance(LLMotion* motion)
     mDeprecatedMotions.insert(motion);
 
     //fade out deprecated motion
-    stopMotionInstance(motion, FALSE);
+    stopMotionInstance(motion, false);
     //no longer canonical
     mAllMotions.erase(motion->getID());
 }
@@ -1124,7 +1124,7 @@ void LLMotionController::pauseAllMotions()
     if (!mPaused)
     {
         //LL_INFOS() << "Pausing animations..." << LL_ENDL;
-        mPaused = TRUE;
+        mPaused = true;
         mPausedFrame = LLFrameTimer::getFrameCount();
     }
 
@@ -1138,7 +1138,7 @@ void LLMotionController::unpauseAllMotions()
     if (mPaused)
     {
         //LL_INFOS() << "Unpausing animations..." << LL_ENDL;
-        mPaused = FALSE;
+        mPaused = false;
     }
 }
 // End
diff --git a/indra/llcharacter/llmotioncontroller.h b/indra/llcharacter/llmotioncontroller.h
index 67193b0cf3..0c262bf24a 100644
--- a/indra/llcharacter/llmotioncontroller.h
+++ b/indra/llcharacter/llmotioncontroller.h
@@ -62,7 +62,7 @@ public:
 
     // adds motion classes to the registry
     // returns true if successfull
-    BOOL registerMotion( const LLUUID& id, LLMotionConstructor create);
+    bool registerMotion( const LLUUID& id, LLMotionConstructor create);
 
     // creates a new instance of a named motion
     // returns NULL motion is not registered
@@ -85,7 +85,7 @@ class LLMotionController
 public:
     typedef std::list<LLMotion*> motion_list_t;
     typedef std::set<LLMotion*> motion_set_t;
-    BOOL mIsSelf;
+    bool mIsSelf;
 
 public:
     // Constructor
@@ -102,7 +102,7 @@ public:
     // registers a motion with the controller
     // (actually just forwards call to motion registry)
     // returns true if successfull
-    BOOL registerMotion( const LLUUID& id, LLMotionConstructor create );
+    bool registerMotion( const LLUUID& id, LLMotionConstructor create );
 
     // creates a motion from the registry
     LLMotion *createMotion( const LLUUID &id );
@@ -115,13 +115,13 @@ public:
     // start motion
     // begins playing the specified motion
     // returns true if successful
-    BOOL startMotion( const LLUUID &id, F32 start_offset );
+    bool startMotion( const LLUUID &id, F32 start_offset );
 
     // stop motion
     // stops a playing motion
     // in reality, it begins the ease out transition phase
     // returns true if successful
-    BOOL stopMotionLocally( const LLUUID &id, BOOL stop_immediate );
+    bool stopMotionLocally( const LLUUID &id, bool stop_immediate );
 
     // Move motions from loading to loaded
     void updateLoadingMotions();
@@ -147,7 +147,7 @@ public:
     // pause and continue all motions
     void pauseAllMotions();
     void unpauseAllMotions();
-    BOOL isPaused() const { return mPaused; }
+    bool isPaused() const { return mPaused; }
     S32 getPausedFrame() const { return mPausedFrame; }
 
     void setTimeStep(F32 step);
@@ -178,10 +178,10 @@ protected:
     // internal operations act on motion instances directly
     // as there can be duplicate motions per id during blending overlap
     void deleteAllMotions();
-    BOOL activateMotionInstance(LLMotion *motion, F32 time);
-    BOOL deactivateMotionInstance(LLMotion *motion);
+    bool activateMotionInstance(LLMotion *motion, F32 time);
+    bool deactivateMotionInstance(LLMotion *motion);
     void deprecateMotionInstance(LLMotion* motion);
-    BOOL stopMotionInstance(LLMotion *motion, BOOL stop_imemdiate);
+    bool stopMotionInstance(LLMotion *motion, bool stop_imemdiate);
     void removeMotionInstance(LLMotion* motion);
     void updateRegularMotions();
     void updateAdditiveMotions();
@@ -220,8 +220,8 @@ protected:
     F32                 mPrevTimerElapsed;
     F32                 mAnimTime;
     F32                 mLastTime;
-    BOOL                mHasRunOnce;
-    BOOL                mPaused;
+    bool                mHasRunOnce;
+    bool                mPaused;
     S32                 mPausedFrame;
     F32                 mTimeStep;
     S32                 mTimeStepCount;
diff --git a/indra/llcharacter/llmultigesture.cpp b/indra/llcharacter/llmultigesture.cpp
index e5ca051f82..a3118a401f 100644
--- a/indra/llcharacter/llmultigesture.cpp
+++ b/indra/llcharacter/llmultigesture.cpp
@@ -54,15 +54,15 @@ LLMultiGesture::~LLMultiGesture()
 
 void LLMultiGesture::reset()
 {
-    mPlaying = FALSE;
+    mPlaying = false;
     mCurrentStep = 0;
     mWaitTimer.reset();
-    mWaitingAnimations = FALSE;
-    mWaitingKeyRelease = FALSE;
-    mWaitingTimer = FALSE;
-    mTriggeredByKey = FALSE;
-    mKeyReleased = FALSE;
-    mWaitingAtEnd = FALSE;
+    mWaitingAnimations = false;
+    mWaitingKeyRelease = false;
+    mWaitingTimer = false;
+    mTriggeredByKey = false;
+    mKeyReleased = false;
+    mWaitingAtEnd = false;
     mRequestedAnimIDs.clear();
     mPlayingAnimIDs.clear();
 }
@@ -107,7 +107,7 @@ S32 LLMultiGesture::getMaxSerialSize() const
     return max_size;
 }
 
-BOOL LLMultiGesture::serialize(LLDataPacker& dp) const
+bool LLMultiGesture::serialize(LLDataPacker& dp) const
 {
     dp.packS32(GESTURE_VERSION, "version");
     dp.packU8(mKey, "key");
@@ -123,16 +123,16 @@ BOOL LLMultiGesture::serialize(LLDataPacker& dp) const
         LLGestureStep* step = mSteps[i];
 
         dp.packS32(step->getType(), "step_type");
-        BOOL ok = step->serialize(dp);
+        bool ok = step->serialize(dp);
         if (!ok)
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLMultiGesture::deserialize(LLDataPacker& dp)
+bool LLMultiGesture::deserialize(LLDataPacker& dp)
 {
     S32 version;
     dp.unpackS32(version, "version");
@@ -141,7 +141,7 @@ BOOL LLMultiGesture::deserialize(LLDataPacker& dp)
         LL_WARNS() << "Bad LLMultiGesture version " << version
             << " should be " << GESTURE_VERSION
             << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     dp.unpackU8(mKey, "key");
@@ -157,7 +157,7 @@ BOOL LLMultiGesture::deserialize(LLDataPacker& dp)
     if (count < 0)
     {
         LL_WARNS() << "Bad LLMultiGesture step count " << count << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     S32 i;
@@ -172,43 +172,43 @@ BOOL LLMultiGesture::deserialize(LLDataPacker& dp)
         case STEP_ANIMATION:
             {
                 LLGestureStepAnimation* step = new LLGestureStepAnimation();
-                BOOL ok = step->deserialize(dp);
-                if (!ok) return FALSE;
+                bool ok = step->deserialize(dp);
+                if (!ok) return false;
                 mSteps.push_back(step);
                 break;
             }
         case STEP_SOUND:
             {
                 LLGestureStepSound* step = new LLGestureStepSound();
-                BOOL ok = step->deserialize(dp);
-                if (!ok) return FALSE;
+                bool ok = step->deserialize(dp);
+                if (!ok) return false;
                 mSteps.push_back(step);
                 break;
             }
         case STEP_CHAT:
             {
                 LLGestureStepChat* step = new LLGestureStepChat();
-                BOOL ok = step->deserialize(dp);
-                if (!ok) return FALSE;
+                bool ok = step->deserialize(dp);
+                if (!ok) return false;
                 mSteps.push_back(step);
                 break;
             }
         case STEP_WAIT:
             {
                 LLGestureStepWait* step = new LLGestureStepWait();
-                BOOL ok = step->deserialize(dp);
-                if (!ok) return FALSE;
+                bool ok = step->deserialize(dp);
+                if (!ok) return false;
                 mSteps.push_back(step);
                 break;
             }
         default:
             {
                 LL_WARNS() << "Bad LLMultiGesture step type " << type << LL_ENDL;
-                return FALSE;
+                return false;
             }
         }
     }
-    return TRUE;
+    return true;
 }
 
 void LLMultiGesture::dump()
@@ -255,15 +255,15 @@ S32 LLGestureStepAnimation::getMaxSerialSize() const
     return max_size;
 }
 
-BOOL LLGestureStepAnimation::serialize(LLDataPacker& dp) const
+bool LLGestureStepAnimation::serialize(LLDataPacker& dp) const
 {
     dp.packString(mAnimName, "anim_name");
     dp.packUUID(mAnimAssetID, "asset_id");
     dp.packU32(mFlags, "flags");
-    return TRUE;
+    return true;
 }
 
-BOOL LLGestureStepAnimation::deserialize(LLDataPacker& dp)
+bool LLGestureStepAnimation::deserialize(LLDataPacker& dp)
 {
     dp.unpackString(mAnimName, "anim_name");
 
@@ -277,7 +277,7 @@ BOOL LLGestureStepAnimation::deserialize(LLDataPacker& dp)
 
     dp.unpackUUID(mAnimAssetID, "asset_id");
     dp.unpackU32(mFlags, "flags");
-    return TRUE;
+    return true;
 }
 // *NOTE: result is translated in LLPreviewGesture::getLabel()
 std::vector<std::string> LLGestureStepAnimation::getLabel() const
@@ -337,21 +337,21 @@ S32 LLGestureStepSound::getMaxSerialSize() const
     return max_size;
 }
 
-BOOL LLGestureStepSound::serialize(LLDataPacker& dp) const
+bool LLGestureStepSound::serialize(LLDataPacker& dp) const
 {
     dp.packString(mSoundName, "sound_name");
     dp.packUUID(mSoundAssetID, "asset_id");
     dp.packU32(mFlags, "flags");
-    return TRUE;
+    return true;
 }
 
-BOOL LLGestureStepSound::deserialize(LLDataPacker& dp)
+bool LLGestureStepSound::deserialize(LLDataPacker& dp)
 {
     dp.unpackString(mSoundName, "sound_name");
 
     dp.unpackUUID(mSoundAssetID, "asset_id");
     dp.unpackU32(mFlags, "flags");
-    return TRUE;
+    return true;
 }
 // *NOTE: result is translated in LLPreviewGesture::getLabel()
 std::vector<std::string> LLGestureStepSound::getLabel() const
@@ -397,19 +397,19 @@ S32 LLGestureStepChat::getMaxSerialSize() const
     return max_size;
 }
 
-BOOL LLGestureStepChat::serialize(LLDataPacker& dp) const
+bool LLGestureStepChat::serialize(LLDataPacker& dp) const
 {
     dp.packString(mChatText, "chat_text");
     dp.packU32(mFlags, "flags");
-    return TRUE;
+    return true;
 }
 
-BOOL LLGestureStepChat::deserialize(LLDataPacker& dp)
+bool LLGestureStepChat::deserialize(LLDataPacker& dp)
 {
     dp.unpackString(mChatText, "chat_text");
 
     dp.unpackU32(mFlags, "flags");
-    return TRUE;
+    return true;
 }
 // *NOTE: result is translated in LLPreviewGesture::getLabel()
 std::vector<std::string> LLGestureStepChat::getLabel() const
@@ -452,18 +452,18 @@ S32 LLGestureStepWait::getMaxSerialSize() const
     return max_size;
 }
 
-BOOL LLGestureStepWait::serialize(LLDataPacker& dp) const
+bool LLGestureStepWait::serialize(LLDataPacker& dp) const
 {
     dp.packF32(mWaitSeconds, "wait_seconds");
     dp.packU32(mFlags, "flags");
-    return TRUE;
+    return true;
 }
 
-BOOL LLGestureStepWait::deserialize(LLDataPacker& dp)
+bool LLGestureStepWait::deserialize(LLDataPacker& dp)
 {
     dp.unpackF32(mWaitSeconds, "wait_seconds");
     dp.unpackU32(mFlags, "flags");
-    return TRUE;
+    return true;
 }
 // *NOTE: result is translated in LLPreviewGesture::getLabel()
 std::vector<std::string> LLGestureStepWait::getLabel() const
diff --git a/indra/llcharacter/llmultigesture.h b/indra/llcharacter/llmultigesture.h
index bc9963f2b1..af0cb08650 100644
--- a/indra/llcharacter/llmultigesture.h
+++ b/indra/llcharacter/llmultigesture.h
@@ -46,8 +46,8 @@ public:
     // Maximum number of bytes this could hold once serialized.
     S32 getMaxSerialSize() const;
 
-    BOOL serialize(LLDataPacker& dp) const;
-    BOOL deserialize(LLDataPacker& dp);
+    bool serialize(LLDataPacker& dp) const;
+    bool deserialize(LLDataPacker& dp);
 
     void dump();
 
@@ -75,28 +75,28 @@ public:
     std::vector<LLGestureStep*> mSteps;
 
     // Is the gesture currently playing?
-    BOOL mPlaying { FALSE };
+    bool mPlaying { false };
 
     // "instruction pointer" for steps
     S32 mCurrentStep { 0 };
 
     // We're waiting for triggered animations to stop playing
-    BOOL mWaitingAnimations { FALSE };
+    bool mWaitingAnimations { false };
 
     // We're waiting for key release
-    BOOL mWaitingKeyRelease { FALSE };
+    bool mWaitingKeyRelease { false };
 
     // We're waiting a fixed amount of time
-    BOOL mWaitingTimer { FALSE };
+    bool mWaitingTimer { false };
 
     // We're waiting for triggered animations to stop playing
-    BOOL mTriggeredByKey { FALSE };
+    bool mTriggeredByKey { false };
 
     // Has the key been released?
-    BOOL mKeyReleased { FALSE };
+    bool mKeyReleased { false };
 
     // Waiting after the last step played for all animations to complete
-    BOOL mWaitingAtEnd { FALSE };
+    bool mWaitingAtEnd { false };
 
     // Timer for waiting
     LLFrameTimer mWaitTimer;
@@ -138,8 +138,8 @@ public:
     virtual std::vector<std::string> getLabel() const = 0;
 
     virtual S32 getMaxSerialSize() const = 0;
-    virtual BOOL serialize(LLDataPacker& dp) const = 0;
-    virtual BOOL deserialize(LLDataPacker& dp) = 0;
+    virtual bool serialize(LLDataPacker& dp) const = 0;
+    virtual bool deserialize(LLDataPacker& dp) = 0;
 
     virtual void dump() = 0;
 };
@@ -160,8 +160,8 @@ public:
     virtual std::vector<std::string> getLabel() const;
 
     virtual S32 getMaxSerialSize() const;
-    virtual BOOL serialize(LLDataPacker& dp) const;
-    virtual BOOL deserialize(LLDataPacker& dp);
+    virtual bool serialize(LLDataPacker& dp) const;
+    virtual bool deserialize(LLDataPacker& dp);
 
     virtual void dump();
 
@@ -183,8 +183,8 @@ public:
     virtual std::vector<std::string> getLabel() const;
 
     virtual S32 getMaxSerialSize() const;
-    virtual BOOL serialize(LLDataPacker& dp) const;
-    virtual BOOL deserialize(LLDataPacker& dp);
+    virtual bool serialize(LLDataPacker& dp) const;
+    virtual bool deserialize(LLDataPacker& dp);
 
     virtual void dump();
 
@@ -206,8 +206,8 @@ public:
     virtual std::vector<std::string> getLabel() const;
 
     virtual S32 getMaxSerialSize() const;
-    virtual BOOL serialize(LLDataPacker& dp) const;
-    virtual BOOL deserialize(LLDataPacker& dp);
+    virtual bool serialize(LLDataPacker& dp) const;
+    virtual bool deserialize(LLDataPacker& dp);
 
     virtual void dump();
 
@@ -232,8 +232,8 @@ public:
     virtual std::vector<std::string> getLabel() const;
 
     virtual S32 getMaxSerialSize() const;
-    virtual BOOL serialize(LLDataPacker& dp) const;
-    virtual BOOL deserialize(LLDataPacker& dp);
+    virtual bool serialize(LLDataPacker& dp) const;
+    virtual bool deserialize(LLDataPacker& dp);
 
     virtual void dump();
 
diff --git a/indra/llcharacter/llpose.cpp b/indra/llcharacter/llpose.cpp
index 723b68b0a3..0652e9eb25 100644
--- a/indra/llcharacter/llpose.cpp
+++ b/indra/llcharacter/llpose.cpp
@@ -81,31 +81,31 @@ LLJointState *LLPose::getNextJointState()
 //-----------------------------------------------------------------------------
 // addJointState()
 //-----------------------------------------------------------------------------
-BOOL LLPose::addJointState(const LLPointer<LLJointState>& jointState)
+bool LLPose::addJointState(const LLPointer<LLJointState>& jointState)
 {
     if (mJointMap.find(jointState->getJoint()->getName()) == mJointMap.end())
     {
         mJointMap[jointState->getJoint()->getName()] = jointState;
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // removeJointState()
 //-----------------------------------------------------------------------------
-BOOL LLPose::removeJointState(const LLPointer<LLJointState>& jointState)
+bool LLPose::removeJointState(const LLPointer<LLJointState>& jointState)
 {
     mJointMap.erase(jointState->getJoint()->getName());
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // removeAllJointStates()
 //-----------------------------------------------------------------------------
-BOOL LLPose::removeAllJointStates()
+bool LLPose::removeAllJointStates()
 {
     mJointMap.clear();
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -181,7 +181,7 @@ LLJointStateBlender::LLJointStateBlender()
     {
         mJointStates[i] = NULL;
         mPriorities[i] = S32_MIN;
-        mAdditiveBlends[i] = FALSE;
+        mAdditiveBlends[i] = false;
     }
 }
 
@@ -193,13 +193,13 @@ LLJointStateBlender::~LLJointStateBlender()
 //-----------------------------------------------------------------------------
 // addJointState()
 //-----------------------------------------------------------------------------
-BOOL LLJointStateBlender::addJointState(const LLPointer<LLJointState>& joint_state, S32 priority, BOOL additive_blend)
+bool LLJointStateBlender::addJointState(const LLPointer<LLJointState>& joint_state, S32 priority, bool additive_blend)
 {
     llassert(joint_state);
 
     if (!joint_state->getJoint())
         // this joint state doesn't point to an actual joint, so we don't care about applying it
-        return FALSE;
+        return false;
 
     for(S32 i = 0; i < JSB_NUM_JOINT_STATES; i++)
     {
@@ -208,7 +208,7 @@ BOOL LLJointStateBlender::addJointState(const LLPointer<LLJointState>& joint_sta
             mJointStates[i] = joint_state;
             mPriorities[i] = priority;
             mAdditiveBlends[i] = additive_blend;
-            return TRUE;
+            return true;
         }
         else if (priority > mPriorities[i])
         {
@@ -225,17 +225,17 @@ BOOL LLJointStateBlender::addJointState(const LLPointer<LLJointState>& joint_sta
             mJointStates[i] = joint_state;
             mPriorities[i] = priority;
             mAdditiveBlends[i] = additive_blend;
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
 // blendJointStates()
 //-----------------------------------------------------------------------------
-void LLJointStateBlender::blendJointStates(BOOL apply_now)
+void LLJointStateBlender::blendJointStates(bool apply_now)
 {
     // we need at least one joint to blend
     // if there is one, it will be in slot zero according to insertion logic
@@ -468,7 +468,7 @@ LLPoseBlender::~LLPoseBlender()
 //-----------------------------------------------------------------------------
 // addMotion()
 //-----------------------------------------------------------------------------
-BOOL LLPoseBlender::addMotion(LLMotion* motion)
+bool LLPoseBlender::addMotion(LLMotion* motion)
 {
     LLPose* pose = motion->getPose();
 
@@ -503,7 +503,7 @@ BOOL LLPoseBlender::addMotion(LLMotion* motion)
             mActiveBlenders.push_front(joint_blender);
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -525,7 +525,7 @@ void LLPoseBlender::blendAndApply()
 //-----------------------------------------------------------------------------
 // blendAndCache()
 //-----------------------------------------------------------------------------
-void LLPoseBlender::blendAndCache(BOOL reset_cached_joints)
+void LLPoseBlender::blendAndCache(bool reset_cached_joints)
 {
     for (blender_list_t::iterator iter = mActiveBlenders.begin();
          iter != mActiveBlenders.end(); ++iter)
@@ -535,7 +535,7 @@ void LLPoseBlender::blendAndCache(BOOL reset_cached_joints)
         {
             jsbp->resetCachedJoint();
         }
-        jsbp->blendJointStates(FALSE);
+        jsbp->blendJointStates(false);
     }
 }
 
diff --git a/indra/llcharacter/llpose.h b/indra/llcharacter/llpose.h
index 8b488a8218..f2032220e0 100644
--- a/indra/llcharacter/llpose.h
+++ b/indra/llcharacter/llpose.h
@@ -65,11 +65,11 @@ public:
     // Destructor
     ~LLPose();
     // add a joint state in this pose
-    BOOL addJointState(const LLPointer<LLJointState>& jointState);
+    bool addJointState(const LLPointer<LLJointState>& jointState);
     // remove a joint state from this pose
-    BOOL removeJointState(const LLPointer<LLJointState>& jointState);
+    bool removeJointState(const LLPointer<LLJointState>& jointState);
     // removes all joint states from this pose
-    BOOL removeAllJointStates();
+    bool removeAllJointStates();
     // set weight for all joint states in this pose
     void setWeight(F32 weight);
     // get weight for this pose
@@ -87,12 +87,12 @@ class LLJointStateBlender
 protected:
     LLPointer<LLJointState> mJointStates[JSB_NUM_JOINT_STATES];
     S32             mPriorities[JSB_NUM_JOINT_STATES];
-    BOOL            mAdditiveBlends[JSB_NUM_JOINT_STATES];
+    bool            mAdditiveBlends[JSB_NUM_JOINT_STATES];
 public:
     LLJointStateBlender();
     ~LLJointStateBlender();
-    void blendJointStates(BOOL apply_now = TRUE);
-    BOOL addJointState(const LLPointer<LLJointState>& joint_state, S32 priority, BOOL additive_blend);
+    void blendJointStates(bool apply_now = true);
+    bool addJointState(const LLPointer<LLJointState>& joint_state, S32 priority, bool additive_blend);
     void interpolate(F32 u);
     void clear();
     void resetCachedJoint();
@@ -120,7 +120,7 @@ public:
     ~LLPoseBlender();
 
     // request motion joint states to be added to pose blender joint state records
-    BOOL addMotion(LLMotion* motion);
+    bool addMotion(LLMotion* motion);
 
     // blend all joint states and apply to skeleton
     void blendAndApply();
@@ -129,7 +129,7 @@ public:
     void clearBlenders();
 
     // blend all joint states and cache results
-    void blendAndCache(BOOL reset_cached_joints);
+    void blendAndCache(bool reset_cached_joints);
 
     // interpolate all joints towards cached values
     void interpolate(F32 u);
diff --git a/indra/llcharacter/llstatemachine.cpp b/indra/llcharacter/llstatemachine.cpp
index beee6f386b..38e9ef444c 100644
--- a/indra/llcharacter/llstatemachine.cpp
+++ b/indra/llcharacter/llstatemachine.cpp
@@ -49,7 +49,7 @@ bool    operator!=(const LLUniqueID &a, const LLUniqueID &b)
 LLStateDiagram::LLStateDiagram()
 {
     mDefaultState = NULL;
-    mUseDefaultState = FALSE;
+    mUseDefaultState = false;
 }
 
 LLStateDiagram::~LLStateDiagram()
@@ -58,14 +58,14 @@ LLStateDiagram::~LLStateDiagram()
 }
 
 // add a state to the state graph
-BOOL LLStateDiagram::addState(LLFSMState *state)
+bool LLStateDiagram::addState(LLFSMState *state)
 {
     mStates[state] = Transitions();
-    return TRUE;
+    return true;
 }
 
 // add a directed transition between 2 states
-BOOL LLStateDiagram::addTransition(LLFSMState& start_state, LLFSMState& end_state, LLFSMTransition& transition)
+bool LLStateDiagram::addTransition(LLFSMState& start_state, LLFSMState& end_state, LLFSMTransition& transition)
 {
     StateMap::iterator state_it;
     state_it = mStates.find(&start_state);
@@ -89,17 +89,17 @@ BOOL LLStateDiagram::addTransition(LLFSMState& start_state, LLFSMState& end_stat
     if (transition_it != state_transitions->end())
     {
         LL_ERRS() << "LLStateTable::addDirectedTransition() : transition already exists" << LL_ENDL;
-        return FALSE; // transition already exists
+        return false; // transition already exists
     }
 
     (*state_transitions)[&transition] = &end_state;
-    return TRUE;
+    return true;
 }
 
 // add an undirected transition between 2 states
-BOOL LLStateDiagram::addUndirectedTransition(LLFSMState& start_state, LLFSMState& end_state, LLFSMTransition& transition)
+bool LLStateDiagram::addUndirectedTransition(LLFSMState& start_state, LLFSMState& end_state, LLFSMTransition& transition)
 {
-    BOOL result;
+    bool result;
     result = addTransition(start_state, end_state, transition);
     if (result)
     {
@@ -162,7 +162,7 @@ LLFSMState* LLStateDiagram::processTransition(LLFSMState& start_state, LLFSMTran
 
 void LLStateDiagram::setDefaultState(LLFSMState& default_state)
 {
-    mUseDefaultState = TRUE;
+    mUseDefaultState = true;
     mDefaultState = &default_state;
 }
 
@@ -179,13 +179,13 @@ S32 LLStateDiagram::numDeadendStates()
     return numDeadends;
 }
 
-BOOL LLStateDiagram::stateIsValid(LLFSMState& state)
+bool LLStateDiagram::stateIsValid(LLFSMState& state)
 {
     if (mStates.find(&state) != mStates.end())
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 LLFSMState* LLStateDiagram::getState(U32 state_id)
@@ -200,7 +200,7 @@ LLFSMState* LLStateDiagram::getState(U32 state_id)
     return NULL;
 }
 
-BOOL LLStateDiagram::saveDotFile(const std::string& filename)
+bool LLStateDiagram::saveDotFile(const std::string& filename)
 {
     LLAPRFile outfile ;
     outfile.open(filename, LL_APR_W);
@@ -209,7 +209,7 @@ BOOL LLStateDiagram::saveDotFile(const std::string& filename)
     if (!dot_file)
     {
         LL_WARNS() << "LLStateDiagram::saveDotFile() : Couldn't open " << filename << " to save state diagram." << LL_ENDL;
-        return FALSE;
+        return false;
     }
     apr_file_printf(dot_file, "digraph StateMachine {\n\tsize=\"100,100\";\n\tfontsize=40;\n\tlabel=\"Finite State Machine\";\n\torientation=landscape\n\tratio=.77\n");
 
@@ -248,7 +248,7 @@ BOOL LLStateDiagram::saveDotFile(const std::string& filename)
 
     apr_file_printf(dot_file, "}\n");
 
-    return TRUE;
+    return true;
 }
 
 std::ostream& operator<<(std::ostream &s, LLStateDiagram &FSM)
@@ -308,7 +308,7 @@ void LLStateMachine::runCurrentState(void *data)
 }
 
 // set current state
-BOOL LLStateMachine::setCurrentState(LLFSMState *initial_state, void* user_data, BOOL skip_entry)
+bool LLStateMachine::setCurrentState(LLFSMState *initial_state, void* user_data, bool skip_entry)
 {
     llassert(mStateDiagram);
 
@@ -319,13 +319,13 @@ BOOL LLStateMachine::setCurrentState(LLFSMState *initial_state, void* user_data,
         {
             initial_state->onEntry(user_data);
         }
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLStateMachine::setCurrentState(U32 state_id, void* user_data, BOOL skip_entry)
+bool LLStateMachine::setCurrentState(U32 state_id, void* user_data, bool skip_entry)
 {
     llassert(mStateDiagram);
 
@@ -338,10 +338,10 @@ BOOL LLStateMachine::setCurrentState(U32 state_id, void* user_data, BOOL skip_en
         {
             state->onEntry(user_data);
         }
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLStateMachine::processTransition(LLFSMTransition& transition, void* user_data)
diff --git a/indra/llcharacter/llstatemachine.h b/indra/llcharacter/llstatemachine.h
index 2dfd106b18..9a33798d96 100644
--- a/indra/llcharacter/llstatemachine.h
+++ b/indra/llcharacter/llstatemachine.h
@@ -74,7 +74,7 @@ protected:
     StateMap            mStates;
     Transitions         mDefaultTransitions;
     LLFSMState*         mDefaultState;
-    BOOL                mUseDefaultState;
+    bool                mUseDefaultState;
 
 public:
     LLStateDiagram();
@@ -82,13 +82,13 @@ public:
 
 protected:
     // add a state to the state graph, executed implicitly when adding transitions
-    BOOL addState(LLFSMState *state);
+    bool addState(LLFSMState *state);
 
     // add a directed transition between 2 states
-    BOOL addTransition(LLFSMState& start_state, LLFSMState& end_state, LLFSMTransition& transition);
+    bool addTransition(LLFSMState& start_state, LLFSMState& end_state, LLFSMTransition& transition);
 
     // add an undirected transition between 2 states
-    BOOL addUndirectedTransition(LLFSMState& start_state, LLFSMState& end_state, LLFSMTransition& transition);
+    bool addUndirectedTransition(LLFSMState& start_state, LLFSMState& end_state, LLFSMTransition& transition);
 
     // add a transition that is taken if none other exist
     void addDefaultTransition(LLFSMState& end_state, LLFSMTransition& transition);
@@ -103,14 +103,14 @@ protected:
     S32 numDeadendStates();
 
     // does this state exist in the state diagram?
-    BOOL stateIsValid(LLFSMState& state);
+    bool stateIsValid(LLFSMState& state);
 
     // get a state pointer by ID
     LLFSMState* getState(U32 state_id);
 
 public:
     // save the graph in a DOT file for rendering and visualization
-    BOOL saveDotFile(const std::string& filename);
+    bool saveDotFile(const std::string& filename);
 };
 
 class LLStateMachine
@@ -138,10 +138,10 @@ public:
     void runCurrentState(void *data);
 
     // set state by state pointer
-    BOOL setCurrentState(LLFSMState *initial_state, void* user_data, BOOL skip_entry = TRUE);
+    bool setCurrentState(LLFSMState *initial_state, void* user_data, bool skip_entry = true);
 
     // set state by unique ID
-    BOOL setCurrentState(U32 state_id, void* user_data, BOOL skip_entry = TRUE);
+    bool setCurrentState(U32 state_id, void* user_data, bool skip_entry = true);
 };
 
 #endif //_LL_LLSTATEMACHINE_H
diff --git a/indra/llcharacter/lltargetingmotion.cpp b/indra/llcharacter/lltargetingmotion.cpp
index 38cba7b778..0683a1125c 100644
--- a/indra/llcharacter/lltargetingmotion.cpp
+++ b/indra/llcharacter/lltargetingmotion.cpp
@@ -93,15 +93,15 @@ LLMotion::LLMotionInitStatus LLTargetingMotion::onInitialize(LLCharacter *charac
 //-----------------------------------------------------------------------------
 // LLTargetingMotion::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLTargetingMotion::onActivate()
+bool LLTargetingMotion::onActivate()
 {
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // LLTargetingMotion::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLTargetingMotion::onUpdate(F32 time, U8* joint_mask)
+bool LLTargetingMotion::onUpdate(F32 time, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED;
     F32 slerp_amt = LLSmoothInterpolation::getInterpolant(TORSO_TARGET_HALF_LIFE);
@@ -109,11 +109,11 @@ BOOL LLTargetingMotion::onUpdate(F32 time, U8* joint_mask)
     LLVector3 target;
     LLVector3* lookAtPoint = (LLVector3*)mCharacter->getAnimationData("LookAtPoint");
 
-    BOOL result = TRUE;
+    bool result = true;
 
     if (!lookAtPoint)
     {
-        return TRUE;
+        return true;
     }
     else
     {
diff --git a/indra/llcharacter/lltargetingmotion.h b/indra/llcharacter/lltargetingmotion.h
index 7a3f5566ac..9e46a76e33 100644
--- a/indra/llcharacter/lltargetingmotion.h
+++ b/indra/llcharacter/lltargetingmotion.h
@@ -66,7 +66,7 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() { return TRUE; }
+    virtual bool getLoop() { return true; }
 
     // motions must report their total duration
     virtual F32 getDuration() { return 0.0; }
@@ -91,14 +91,14 @@ public:
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate();
+    virtual bool onActivate();
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    // must return true while it is active, and
+    // must return true when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask);
 
     // called when a motion is deactivated
     virtual void onDeactivate();
diff --git a/indra/llcharacter/llvisualparam.cpp b/indra/llcharacter/llvisualparam.cpp
index 3dbab7f081..105b31de65 100644
--- a/indra/llcharacter/llvisualparam.cpp
+++ b/indra/llcharacter/llvisualparam.cpp
@@ -48,7 +48,7 @@ LLVisualParamInfo::LLVisualParamInfo()
 //-----------------------------------------------------------------------------
 // parseXml()
 //-----------------------------------------------------------------------------
-BOOL LLVisualParamInfo::parseXml(LLXmlTreeNode *node)
+bool LLVisualParamInfo::parseXml(LLXmlTreeNode *node)
 {
     // attribute: id
     static LLStdStringHandle id_string = LLXmlTree::addAttributeString("id");
@@ -102,7 +102,7 @@ BOOL LLVisualParamInfo::parseXml(LLXmlTreeNode *node)
     else
     {
         LL_WARNS() << "Avatar file: <param> has invalid sex attribute: " << sex << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // attribute: name
@@ -110,7 +110,7 @@ BOOL LLVisualParamInfo::parseXml(LLXmlTreeNode *node)
     if( !node->getFastAttributeString( name_string, mName ) )
     {
         LL_WARNS() << "Avatar file: <param> is missing name attribute" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // attribute: label
@@ -138,7 +138,7 @@ BOOL LLVisualParamInfo::parseXml(LLXmlTreeNode *node)
         mMaxName = "More";
     }
 
-    return TRUE;
+    return true;
 }
 
 //virtual
@@ -164,8 +164,8 @@ LLVisualParam::LLVisualParam()
     mLastWeight( 0.f ),
     mNext( NULL ),
     mTargetWeight( 0.f ),
-    mIsAnimating( FALSE ),
-    mIsDummy(FALSE),
+    mIsAnimating( false ),
+    mIsDummy(false),
     mID( -1 ),
     mInfo( 0 ),
     mParamLocation(LOC_UNKNOWN)
@@ -207,29 +207,29 @@ LLVisualParam::~LLVisualParam()
 // setInfo()
 //-----------------------------------------------------------------------------
 
-BOOL LLVisualParam::setInfo(LLVisualParamInfo *info)
+bool LLVisualParam::setInfo(LLVisualParamInfo *info)
 {
     llassert(mInfo == NULL);
     if (info->mID < 0)
-        return FALSE;
+        return false;
     mInfo = info;
     mID = info->mID;
-    setWeight(getDefaultWeight(), FALSE );
-    return TRUE;
+    setWeight(getDefaultWeight(), false );
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // parseData()
 //-----------------------------------------------------------------------------
-BOOL LLVisualParam::parseData(LLXmlTreeNode *node)
+bool LLVisualParam::parseData(LLXmlTreeNode *node)
 {
     LLVisualParamInfo *info = new LLVisualParamInfo;
 
     info->parseXml(node);
     if (!setInfo(info))
-        return FALSE;
+        return false;
 
-    return TRUE;
+    return true;
 }
 */
 
@@ -282,7 +282,7 @@ void LLVisualParam::setAnimationTarget(F32 target_value)
     {
         mTargetWeight = target_value;
     }
-    mIsAnimating = TRUE;
+    mIsAnimating = true;
 
     if (mNext)
     {
@@ -327,16 +327,16 @@ void LLVisualParam::stopAnimating()
 {
     if (mIsAnimating && isTweakable())
     {
-        mIsAnimating = FALSE;
+        mIsAnimating = false;
         setWeight(mTargetWeight);
     }
 }
 
 //virtual
-BOOL LLVisualParam::linkDrivenParams(visual_param_mapper mapper, BOOL only_cross_params)
+bool LLVisualParam::linkDrivenParams(visual_param_mapper mapper, bool only_cross_params)
 {
     // nothing to do for non-driver parameters
-    return TRUE;
+    return true;
 }
 
 //virtual
diff --git a/indra/llcharacter/llvisualparam.h b/indra/llcharacter/llvisualparam.h
index 4d760ed6fa..3caddb9c62 100644
--- a/indra/llcharacter/llvisualparam.h
+++ b/indra/llcharacter/llvisualparam.h
@@ -74,7 +74,7 @@ public:
     LLVisualParamInfo();
     virtual ~LLVisualParamInfo() {};
 
-    virtual BOOL parseXml(LLXmlTreeNode *node);
+    virtual bool parseXml(LLXmlTreeNode *node);
 
     S32 getID() const { return mID; }
 
@@ -113,11 +113,11 @@ public:
     // (They can not be virtual because they use specific derived Info classes)
     LLVisualParamInfo*      getInfo() const { return mInfo; }
     //   This sets mInfo and calls initialization functions
-    BOOL                    setInfo(LLVisualParamInfo *info);
+    bool                    setInfo(LLVisualParamInfo *info);
 
     // Virtual functions
     //  Pure virtuals
-    //virtual BOOL          parseData( LLXmlTreeNode *node ) = 0;
+    //virtual bool          parseData( LLXmlTreeNode *node ) = 0;
     virtual void            apply( ESex avatar_sex ) = 0;
     //  Default functions
     virtual void            setWeight(F32 weight);
@@ -125,7 +125,7 @@ public:
     virtual void            animate(F32 delta);
     virtual void            stopAnimating();
 
-    virtual BOOL            linkDrivenParams(visual_param_mapper mapper, BOOL only_cross_params);
+    virtual bool            linkDrivenParams(visual_param_mapper mapper, bool only_cross_params);
     virtual void            resetDrivenParams();
 
     // Interface methods
@@ -151,17 +151,17 @@ public:
     F32                     getCurrentWeight() const    { return mCurWeight; }
     F32                     getLastWeight() const   { return mLastWeight; }
     void                    setLastWeight(F32 val) { mLastWeight = val; }
-    BOOL                    isAnimating() const { return mIsAnimating; }
-    BOOL                    isTweakable() const { return (getGroup() == VISUAL_PARAM_GROUP_TWEAKABLE)  || (getGroup() == VISUAL_PARAM_GROUP_TWEAKABLE_NO_TRANSMIT); }
+    bool                    isAnimating() const { return mIsAnimating; }
+    bool                    isTweakable() const { return (getGroup() == VISUAL_PARAM_GROUP_TWEAKABLE)  || (getGroup() == VISUAL_PARAM_GROUP_TWEAKABLE_NO_TRANSMIT); }
 
     LLVisualParam*          getNextParam()      { return mNext; }
     void                    setNextParam( LLVisualParam *next );
     void                    clearNextParam();
 
-    virtual void            setAnimating(BOOL is_animating) { mIsAnimating = is_animating && !mIsDummy; }
-    BOOL                    getAnimating() const { return mIsAnimating; }
+    virtual void            setAnimating(bool is_animating) { mIsAnimating = is_animating && !mIsDummy; }
+    bool                    getAnimating() const { return mIsAnimating; }
 
-    void                    setIsDummy(BOOL is_dummy) { mIsDummy = is_dummy; }
+    void                    setIsDummy(bool is_dummy) { mIsDummy = is_dummy; }
 
     void                    setParamLocation(EParamLocation loc);
     EParamLocation          getParamLocation() const { return mParamLocation; }
@@ -173,8 +173,8 @@ protected:
     F32                 mLastWeight;        // last weight
     LLVisualParam*      mNext;              // next param in a shared chain
     F32                 mTargetWeight;      // interpolation target
-    BOOL                mIsAnimating;   // this value has been given an interpolation target
-    BOOL                mIsDummy;  // this is used to prevent dummy visual params from animating
+    bool                mIsAnimating;   // this value has been given an interpolation target
+    bool                mIsDummy;  // this is used to prevent dummy visual params from animating
 
 
     S32                 mID;                // id for storing weight/morphtarget compares compactly
diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt
index 38fd05fae6..ad17754790 100644
--- a/indra/llcommon/CMakeLists.txt
+++ b/indra/llcommon/CMakeLists.txt
@@ -8,7 +8,6 @@ include(bugsplat)
 include(Linking)
 include(Boost)
 include(LLSharedLibs)
-include(JsonCpp)
 if (USE_AUTOBUILD_3P OR USE_CONAN)
 include(Copy3rdPartyLibs)
 endif ()
@@ -283,7 +282,6 @@ target_link_libraries(
         llcommon
         ll::apr
         ll::expat
-        ll::jsoncpp
         ll::zlib-ng
         ll::boost
         ll::uriparser
diff --git a/indra/llcommon/StackWalker.cpp b/indra/llcommon/StackWalker.cpp
index 201eeed56b..e9ae1723fb 100644
--- a/indra/llcommon/StackWalker.cpp
+++ b/indra/llcommon/StackWalker.cpp
@@ -292,10 +292,10 @@ public:
       free(m_szSymPath);
     m_szSymPath = NULL;
   }
-  BOOL Init(LPCSTR szSymPath)
+  bool Init(LPCSTR szSymPath)
   {
     if (m_parent == NULL)
-      return FALSE;
+      return false;
     // Dynamically load the Entry-Points for dbghelp.dll:
     // First try to load the newsest one from
     TCHAR szTemp[4096];
@@ -364,7 +364,7 @@ public:
     if (m_hDbhHelp == NULL)  // if not already loaded, try to load a default-one
       m_hDbhHelp = LoadLibrary( _T("dbghelp.dll") );
     if (m_hDbhHelp == NULL)
-      return FALSE;
+      return false;
     pSI = (tSI) GetProcAddress(m_hDbhHelp, "SymInitialize" );
     pSC = (tSC) GetProcAddress(m_hDbhHelp, "SymCleanup" );
 
@@ -388,7 +388,7 @@ public:
       FreeLibrary(m_hDbhHelp);
       m_hDbhHelp = NULL;
       pSC = NULL;
-      return FALSE;
+      return false;
     }
 
     // SymInitialize
@@ -415,7 +415,7 @@ public:
     GetUserNameA(szUserName, &dwSize);
     this->m_parent->OnSymInit(buf, symOptions, szUserName);
 
-    return TRUE;
+    return true;
   }
 
   StackWalker *m_parent;
@@ -555,7 +555,7 @@ private:
   typedef MODULEENTRY32 *  LPMODULEENTRY32;
   #pragma pack( pop )
 
-  BOOL GetModuleListTH32(HANDLE hProcess, DWORD pid)
+  bool GetModuleListTH32(HANDLE hProcess, DWORD pid)
   {
     // CreateToolhelp32Snapshot()
     typedef HANDLE (__stdcall *tCT32S)(DWORD dwFlags, DWORD th32ProcessID);
@@ -592,13 +592,13 @@ private:
     }
 
     if (hToolhelp == NULL)
-      return FALSE;
+      return false;
 
     hSnap = pCT32S( TH32CS_SNAPMODULE, pid );
     if (hSnap == (HANDLE) -1)
     {
       FreeLibrary(hToolhelp);
-      return FALSE;
+      return false;
     }
 
     keepGoing = !!pM32F( hSnap, &me );
@@ -612,8 +612,8 @@ private:
     CloseHandle(hSnap);
     FreeLibrary(hToolhelp);
     if (cnt <= 0)
-      return FALSE;
-    return TRUE;
+      return false;
+    return true;
   }  // GetModuleListTH32
 
   // **************************************** PSAPI ************************
@@ -623,7 +623,7 @@ private:
       LPVOID EntryPoint;
   } MODULEINFO, *LPMODULEINFO;
 
-  BOOL GetModuleListPSAPI(HANDLE hProcess)
+  bool GetModuleListPSAPI(HANDLE hProcess)
   {
     // EnumProcessModules()
     typedef BOOL (__stdcall *tEPM)(HANDLE hProcess, HMODULE *lphModule, DWORD cb, LPDWORD lpcbNeeded );
@@ -652,7 +652,7 @@ private:
 
     hPsapi = LoadLibrary( _T("psapi.dll") );
     if (hPsapi == NULL)
-      return FALSE;
+      return false;
 
     pEPM = (tEPM) GetProcAddress( hPsapi, "EnumProcessModules" );
     pGMFNE = (tGMFNE) GetProcAddress( hPsapi, "GetModuleFileNameExA" );
@@ -662,7 +662,7 @@ private:
     {
       // we couldn't find all functions
       FreeLibrary(hPsapi);
-      return FALSE;
+      return false;
     }
 
     hMods = (HMODULE*) malloc(sizeof(HMODULE) * (TTBUFLEN / sizeof(HMODULE)));
@@ -797,7 +797,7 @@ private:
     return result;
   }
 public:
-  BOOL LoadModules(HANDLE hProcess, DWORD dwProcessId)
+  bool LoadModules(HANDLE hProcess, DWORD dwProcessId)
   {
     // first try toolhelp32
     if (GetModuleListTH32(hProcess, dwProcessId))
@@ -807,13 +807,13 @@ public:
   }
 
 
-  BOOL GetModuleInfo(HANDLE hProcess, DWORD64 baseAddr, IMAGEHLP_MODULE64_V3 *pModuleInfo)
+  bool GetModuleInfo(HANDLE hProcess, DWORD64 baseAddr, IMAGEHLP_MODULE64_V3 *pModuleInfo)
   {
     memset(pModuleInfo, 0, sizeof(IMAGEHLP_MODULE64_V3));
     if(this->pSGMI == NULL)
     {
       SetLastError(ERROR_DLL_INIT_FAILED);
-      return FALSE;
+      return false;
     }
     // First try to use the larger ModuleInfo-Structure
     pModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE64_V3);
@@ -821,7 +821,7 @@ public:
     if (pData == NULL)
     {
       SetLastError(ERROR_NOT_ENOUGH_MEMORY);
-      return FALSE;
+      return false;
     }
     memcpy(pData, pModuleInfo, sizeof(IMAGEHLP_MODULE64_V3));
     static bool s_useV3Version = true;
@@ -833,7 +833,7 @@ public:
         memcpy(pModuleInfo, pData, sizeof(IMAGEHLP_MODULE64_V3));
         pModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE64_V3);
         free(pData);
-        return TRUE;
+        return true;
       }
       s_useV3Version = false;  // to prevent unneccessarry calls with the larger struct...
     }
@@ -847,11 +847,11 @@ public:
       memcpy(pModuleInfo, pData, sizeof(IMAGEHLP_MODULE64_V2));
       pModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE64_V2);
       free(pData);
-      return TRUE;
+      return true;
     }
     free(pData);
     SetLastError(ERROR_DLL_INIT_FAILED);
-    return FALSE;
+    return false;
   }
 };
 
@@ -860,7 +860,7 @@ StackWalker::StackWalker(DWORD dwProcessId, HANDLE hProcess)
 {
   this->m_verbose = true;
   this->m_options = OptionsAll;
-  this->m_modulesLoaded = FALSE;
+  this->m_modulesLoaded = false;
   this->m_hProcess = hProcess;
   this->m_sw = new StackWalkerInternal(this, this->m_hProcess);
   this->m_dwProcessId = dwProcessId;
@@ -871,7 +871,7 @@ StackWalker::StackWalker(bool verbose, int options, LPCSTR szSymPath, DWORD dwPr
 {
   this->m_verbose = verbose;
   this->m_options = options;
-  this->m_modulesLoaded = FALSE;
+  this->m_modulesLoaded = false;
   this->m_hProcess = hProcess;
   this->m_sw = new StackWalkerInternal(this, this->m_hProcess);
   this->m_dwProcessId = dwProcessId;
@@ -895,15 +895,15 @@ StackWalker::~StackWalker()
   this->m_sw = NULL;
 }
 
-BOOL StackWalker::LoadModules()
+bool StackWalker::LoadModules()
 {
   if (this->m_sw == NULL)
   {
     SetLastError(ERROR_DLL_INIT_FAILED);
-    return FALSE;
+    return false;
   }
   if (m_modulesLoaded != FALSE)
-    return TRUE;
+    return true;
 
   // Build the sym-path:
   char *szSymPath = NULL;
@@ -914,7 +914,7 @@ BOOL StackWalker::LoadModules()
     if (szSymPath == NULL)
     {
       SetLastError(ERROR_NOT_ENOUGH_MEMORY);
-      return FALSE;
+      return false;
     }
     szSymPath[0] = 0;
     // Now first add the (optional) provided sympath:
@@ -994,18 +994,18 @@ BOOL StackWalker::LoadModules()
   }  // if SymBuildPath
 
   // First Init the whole stuff...
-  BOOL bRet = this->m_sw->Init(szSymPath);
+  bool bRet = this->m_sw->Init(szSymPath);
   if (szSymPath != NULL) free(szSymPath); szSymPath = NULL;
-  if (bRet == FALSE)
+  if (!bRet)
   {
     this->OnDbgHelpErr("Error while initializing dbghelp.dll", 0, 0);
     SetLastError(ERROR_DLL_INIT_FAILED);
-    return FALSE;
+    return false;
   }
 
   bRet = this->m_sw->LoadModules(this->m_hProcess, this->m_dwProcessId);
-  if (bRet != FALSE)
-    m_modulesLoaded = TRUE;
+  if (bRet)
+    m_modulesLoaded = true;
   return bRet;
 }
 
@@ -1017,7 +1017,7 @@ BOOL StackWalker::LoadModules()
 static StackWalker::PReadProcessMemoryRoutine s_readMemoryFunction = NULL;
 static LPVOID s_readMemoryFunction_UserData = NULL;
 
-BOOL StackWalker::ShowCallstack(bool verbose, HANDLE hThread, const CONTEXT *context, PReadProcessMemoryRoutine readMemoryFunction, LPVOID pUserData)
+bool StackWalker::ShowCallstack(bool verbose, HANDLE hThread, const CONTEXT *context, PReadProcessMemoryRoutine readMemoryFunction, LPVOID pUserData)
 {
   m_verbose = verbose;
   CONTEXT c;
@@ -1029,13 +1029,13 @@ BOOL StackWalker::ShowCallstack(bool verbose, HANDLE hThread, const CONTEXT *con
   bool bLastEntryCalled = true;
   int curRecursionCount = 0;
 
-  if (m_modulesLoaded == FALSE)
+  if (!m_modulesLoaded)
     this->LoadModules();  // ignore the result...
 
   if (this->m_sw->m_hDbhHelp == NULL)
   {
     SetLastError(ERROR_DLL_INIT_FAILED);
-    return FALSE;
+    return false;
   }
 
   s_readMemoryFunction = readMemoryFunction;
@@ -1062,7 +1062,7 @@ BOOL StackWalker::ShowCallstack(bool verbose, HANDLE hThread, const CONTEXT *con
       if (GetThreadContext(hThread, &c) == FALSE)
       {
         ResumeThread(hThread);
-        return FALSE;
+        return false;
       }
     }
   }
@@ -1256,13 +1256,13 @@ BOOL StackWalker::ShowCallstack(bool verbose, HANDLE hThread, const CONTEXT *con
   cleanup:
     if (pSym) free( pSym );
 
-  if (bLastEntryCalled == false)
+  if (!bLastEntryCalled)
       this->OnCallstackEntry(lastEntry, csEntry);
 
   if (context == NULL)
     ResumeThread(hThread);
 
-  return TRUE;
+  return true;
 }
 
 BOOL __stdcall StackWalker::myReadProcMem(
diff --git a/indra/llcommon/StackWalker.h b/indra/llcommon/StackWalker.h
index 91cd55bbaf..c76b07a739 100644
--- a/indra/llcommon/StackWalker.h
+++ b/indra/llcommon/StackWalker.h
@@ -112,9 +112,9 @@ public:
     LPVOID      pUserData  // optional data, which was passed in "ShowCallstack"
     );
 
-  BOOL LoadModules();
+  bool LoadModules();
 
-  BOOL ShowCallstack(
+  bool ShowCallstack(
     bool verbose,
     HANDLE hThread = GetCurrentThread(),
     const CONTEXT *context = NULL,
@@ -159,7 +159,7 @@ protected:
   StackWalkerInternal *m_sw;
   HANDLE m_hProcess;
   DWORD m_dwProcessId;
-  BOOL m_modulesLoaded;
+  bool m_modulesLoaded;
   LPSTR m_szSymPath;
 
   bool m_verbose;
diff --git a/indra/llcommon/is_approx_equal_fraction.h b/indra/llcommon/is_approx_equal_fraction.h
index 79f4f5ebbd..371a1307c1 100644
--- a/indra/llcommon/is_approx_equal_fraction.h
+++ b/indra/llcommon/is_approx_equal_fraction.h
@@ -43,9 +43,9 @@
  * signatures.
  */
 template <typename FTYPE>
-inline BOOL is_approx_equal_fraction_impl(FTYPE x, FTYPE y, U32 frac_bits)
+inline bool is_approx_equal_fraction_impl(FTYPE x, FTYPE y, U32 frac_bits)
 {
-    BOOL ret = TRUE;
+    bool ret = true;
     FTYPE diff = (FTYPE) fabs(x - y);
 
     S32 diffInt = (S32) diff;
@@ -58,20 +58,20 @@ inline BOOL is_approx_equal_fraction_impl(FTYPE x, FTYPE y, U32 frac_bits)
     // based on the number of bits used for packing decimal portion.
     if (diffInt != 0 || diffFracTolerance > 1)
     {
-        ret = FALSE;
+        ret = false;
     }
 
     return ret;
 }
 
 /// F32 flavor
-inline BOOL is_approx_equal_fraction(F32 x, F32 y, U32 frac_bits)
+inline bool is_approx_equal_fraction(F32 x, F32 y, U32 frac_bits)
 {
     return is_approx_equal_fraction_impl<F32>(x, y, frac_bits);
 }
 
 /// F64 flavor
-inline BOOL is_approx_equal_fraction(F64 x, F64 y, U32 frac_bits)
+inline bool is_approx_equal_fraction(F64 x, F64 y, U32 frac_bits)
 {
     return is_approx_equal_fraction_impl<F64>(x, y, frac_bits);
 }
diff --git a/indra/llcommon/llalignedarray.h b/indra/llcommon/llalignedarray.h
index 0ba8b34cb6..8248f82186 100644
--- a/indra/llcommon/llalignedarray.h
+++ b/indra/llcommon/llalignedarray.h
@@ -116,7 +116,7 @@ void LLAlignedArray<T, alignment>::resize(U32 size)
 template <class T, U32 alignment>
 T& LLAlignedArray<T, alignment>::operator[](int idx)
 {
-    if(idx >= mElementCount || idx < 0)
+    if (idx < 0 || unsigned(idx) >= mElementCount)
     {
         LL_ERRS() << "Out of bounds LLAlignedArray, requested: " << (S32)idx << " size: " << mElementCount << LL_ENDL;
     }
@@ -126,7 +126,7 @@ T& LLAlignedArray<T, alignment>::operator[](int idx)
 template <class T, U32 alignment>
 const T& LLAlignedArray<T, alignment>::operator[](int idx) const
 {
-    if (idx >= mElementCount || idx < 0)
+    if (idx < 0 || unsigned(idx) >= mElementCount)
     {
         LL_ERRS() << "Out of bounds LLAlignedArray, requested: " << (S32)idx << " size: " << mElementCount << LL_ENDL;
     }
diff --git a/indra/llcommon/llapp.cpp b/indra/llcommon/llapp.cpp
index 9729f68d23..b85bd2573b 100644
--- a/indra/llcommon/llapp.cpp
+++ b/indra/llcommon/llapp.cpp
@@ -52,15 +52,7 @@
 
 //
 // Signal handling
-//
-// Windows uses structured exceptions, so it's handled a bit differently.
-//
-#if LL_WINDOWS
-#include "windows.h"
-
-LONG WINAPI default_windows_exception_handler(struct _EXCEPTION_POINTERS *exception_infop);
-BOOL ConsoleCtrlHandler(DWORD fdwCtrlType);
-#else
+#ifndef LL_WINDOWS
 # include <signal.h>
 # include <unistd.h> // for fork()
 void setup_signals();
@@ -87,18 +79,18 @@ S32 LL_HEARTBEAT_SIGNAL = SIGUSR2;
 S32 LL_SMACKDOWN_SIGNAL = (SIGRTMAX >= 0) ? (SIGRTMAX-1) : SIGUSR1;
 S32 LL_HEARTBEAT_SIGNAL = (SIGRTMAX >= 0) ? (SIGRTMAX-0) : SIGUSR2;
 # endif // LL_DARWIN
-#endif // LL_WINDOWS
+#endif // !LL_WINDOWS
 
 // the static application instance
 LLApp* LLApp::sApplication = NULL;
 
 // Allows the generation of core files for post mortem under gdb
 // and disables crashlogger
-BOOL LLApp::sDisableCrashlogger = FALSE;
+bool LLApp::sDisableCrashlogger = false;
 
 // Local flag for whether or not to do logging in signal handlers.
 //static
-BOOL LLApp::sLogInSignal = FALSE;
+bool LLApp::sLogInSignal = false;
 
 // static
 // Keeps track of application status
@@ -207,9 +199,9 @@ bool LLApp::parseCommandOptions(int argc, char** argv)
 
 #if LL_WINDOWS
         //Windows changed command line parsing.  Deal with it.
-        S32 slen = value.length() - 1;
-        S32 start = 0;
-        S32 end = slen;
+        size_t slen = value.length() - 1;
+        size_t start = 0;
+        size_t end = slen;
         if (argv[ii][start]=='"')start++;
         if (argv[ii][end]=='"')end--;
         if (start!=0 || end!=slen)
@@ -272,9 +264,9 @@ bool LLApp::parseCommandOptions(int argc, wchar_t** wargv)
 
 #if LL_WINDOWS
         //Windows changed command line parsing.  Deal with it.
-        S32 slen = value.length() - 1;
-        S32 start = 0;
-        S32 end = slen;
+        size_t slen = value.length() - 1;
+        size_t start = 0;
+        size_t end = slen;
         if (wargv[ii][start]=='"')start++;
         if (wargv[ii][end]=='"')end--;
         if (start!=0 || end!=slen)
@@ -326,33 +318,6 @@ void LLApp::stepFrame()
     mRunner.run();
 }
 
-#if LL_WINDOWS
-//The following code is needed for 32-bit apps on 64-bit windows to keep it from eating
-//crashes.   It is a lovely undocumented 'feature' in SP1 of Windows 7. An excellent
-//in-depth article on the issue may be found here:  http://randomascii.wordpress.com/2012/07/05/when-even-crashing-doesn-work/
-void EnableCrashingOnCrashes()
-{
-    typedef BOOL (WINAPI *tGetPolicy)(LPDWORD lpFlags);
-    typedef BOOL (WINAPI *tSetPolicy)(DWORD dwFlags);
-    const DWORD EXCEPTION_SWALLOWING = 0x1;
-
-    HMODULE kernel32 = LoadLibraryA("kernel32.dll");
-    tGetPolicy pGetPolicy = (tGetPolicy)GetProcAddress(kernel32,
-        "GetProcessUserModeExceptionPolicy");
-    tSetPolicy pSetPolicy = (tSetPolicy)GetProcAddress(kernel32,
-        "SetProcessUserModeExceptionPolicy");
-    if (pGetPolicy && pSetPolicy)
-    {
-        DWORD dwFlags;
-        if (pGetPolicy(&dwFlags))
-        {
-            // Turn off the filter
-            pSetPolicy(dwFlags & ~EXCEPTION_SWALLOWING);
-        }
-    }
-}
-#endif
-
 void LLApp::setupErrorHandling(bool second_instance)
 {
     // Error handling is done by starting up an error handling thread, which just sleeps and
@@ -503,13 +468,13 @@ bool LLApp::isExiting()
 
 void LLApp::disableCrashlogger()
 {
-    sDisableCrashlogger = TRUE;
+    sDisableCrashlogger = true;
 }
 
 // static
 bool LLApp::isCrashloggerDisabled()
 {
-    return (sDisableCrashlogger == TRUE);
+    return sDisableCrashlogger;
 }
 
 // static
@@ -522,77 +487,7 @@ int LLApp::getPid()
 #endif
 }
 
-#if LL_WINDOWS
-LONG WINAPI default_windows_exception_handler(struct _EXCEPTION_POINTERS *exception_infop)
-{
-    // Translate the signals/exceptions into cross-platform stuff
-    // Windows implementation
-
-    // Make sure the user sees something to indicate that the app crashed.
-    LONG retval;
-
-    if (LLApp::isError())
-    {
-        LL_WARNS() << "Got another fatal signal while in the error handler, die now!" << LL_ENDL;
-        retval = EXCEPTION_EXECUTE_HANDLER;
-        return retval;
-    }
-
-    // Flag status to error, so thread_error starts its work
-    LLApp::setError();
-
-    // Block in the exception handler until the app has stopped
-    // This is pretty sketchy, but appears to work just fine
-    while (!LLApp::isStopped())
-    {
-        ms_sleep(10);
-    }
-
-    //
-    // Generate a minidump if we can.
-    //
-    // TODO: This needs to be ported over form the viewer-specific
-    // LLWinDebug class
-
-    //
-    // At this point, we always want to exit the app.  There's no graceful
-    // recovery for an unhandled exception.
-    //
-    // Just kill the process.
-    retval = EXCEPTION_EXECUTE_HANDLER;
-    return retval;
-}
-
-// Win32 doesn't support signals. This is used instead.
-BOOL ConsoleCtrlHandler(DWORD fdwCtrlType)
-{
-    switch (fdwCtrlType)
-    {
-        case CTRL_BREAK_EVENT:
-        case CTRL_LOGOFF_EVENT:
-        case CTRL_SHUTDOWN_EVENT:
-        case CTRL_CLOSE_EVENT: // From end task or the window close button.
-        case CTRL_C_EVENT:  // from CTRL-C on the keyboard
-            // Just set our state to quitting, not error
-            if (LLApp::isQuitting() || LLApp::isError())
-            {
-                // We're already trying to die, just ignore this signal
-                if (LLApp::sLogInSignal)
-                {
-                    LL_INFOS() << "Signal handler - Already trying to quit, ignoring signal!" << LL_ENDL;
-                }
-                return TRUE;
-            }
-            LLApp::setQuitting();
-            return TRUE;
-
-        default:
-            return FALSE;
-    }
-}
-
-#else //!LL_WINDOWS
-
+#ifndef LL_WINDOWS
 void setup_signals()
 {
     //
@@ -691,9 +586,10 @@ void default_unix_signal_handler(int signum, siginfo_t *info, void *)
     switch (signum)
     {
     case SIGCHLD:
+    case SIGHUP:
         if (LLApp::sLogInSignal)
         {
-            LL_INFOS() << "Signal handler - Got SIGCHLD from " << info->si_pid << LL_ENDL;
+            LL_INFOS() << "Signal handler - Got SIGCHLD or SIGHUP from " << info->si_pid << LL_ENDL;
         }
 
         return;
@@ -708,11 +604,10 @@ void default_unix_signal_handler(int signum, siginfo_t *info, void *)
         raise(signum);
         return;
     case SIGINT:
-    case SIGHUP:
     case SIGTERM:
         if (LLApp::sLogInSignal)
         {
-            LL_WARNS() << "Signal handler - Got SIGINT, HUP, or TERM, exiting gracefully" << LL_ENDL;
+            LL_WARNS() << "Signal handler - Got SIGINT, or TERM, exiting gracefully" << LL_ENDL;
         }
         // Graceful exit
         // Just set our state to quitting, not error
@@ -805,9 +700,6 @@ void default_unix_signal_handler(int signum, siginfo_t *info, void *)
     }
 }
 
-#if LL_LINUX
-#endif
-
 bool unix_post_minidump_callback(const char *dump_dir,
                       const char *minidump_id,
                       void *context, bool succeeded)
diff --git a/indra/llcommon/llapp.h b/indra/llcommon/llapp.h
index 93bf4dd929..ad8912ca88 100644
--- a/indra/llcommon/llapp.h
+++ b/indra/llcommon/llapp.h
@@ -291,7 +291,7 @@ protected:
 
     static void setStatus(EAppStatus status);       // Use this to change the application status.
     static LLScalarCond<EAppStatus> sStatus; // Reflects current application status
-    static BOOL sDisableCrashlogger; // Let the OS handle crashes for us.
+    static bool sDisableCrashlogger; // Let the OS handle crashes for us.
     std::wstring mCrashReportPipeStr;  //Name of pipe to use for crash reporting.
 
     std::string mDumpPath;  //output path for google breakpad.  Dependency workaround.
@@ -336,7 +336,7 @@ private:
 #endif
 
 public:
-    static BOOL sLogInSignal;
+    static bool sLogInSignal;
 };
 
 #endif // LL_LLAPP_H
diff --git a/indra/llcommon/llapr.cpp b/indra/llcommon/llapr.cpp
index c907a8c073..b085f8f5dc 100644
--- a/indra/llcommon/llapr.cpp
+++ b/indra/llcommon/llapr.cpp
@@ -56,7 +56,7 @@ void ll_init_apr()
 
     if(!LLAPRFile::sAPRFilePoolp)
     {
-        LLAPRFile::sAPRFilePoolp = new LLVolatileAPRPool(FALSE) ;
+        LLAPRFile::sAPRFilePoolp = new LLVolatileAPRPool(false) ;
     }
 
     gAPRInitialized = true;
@@ -91,7 +91,7 @@ void ll_cleanup_apr()
 //
 //LLAPRPool
 //
-LLAPRPool::LLAPRPool(apr_pool_t *parent, apr_size_t size, BOOL releasePoolFlag)
+LLAPRPool::LLAPRPool(apr_pool_t *parent, apr_size_t size, bool releasePoolFlag)
     : mParent(parent),
     mReleasePoolFlag(releasePoolFlag),
     mMaxSize(size),
@@ -145,7 +145,7 @@ apr_pool_t* LLAPRPool::getAPRPool()
     return mPool ;
 }
 
-LLVolatileAPRPool::LLVolatileAPRPool(BOOL is_local, apr_pool_t *parent, apr_size_t size, BOOL releasePoolFlag)
+LLVolatileAPRPool::LLVolatileAPRPool(bool is_local, apr_pool_t *parent, apr_size_t size, bool releasePoolFlag)
                   : LLAPRPool(parent, size, releasePoolFlag),
                   mNumActiveRef(0),
                   mNumTotalRef(0)
@@ -219,7 +219,7 @@ void LLVolatileAPRPool::clearVolatileAPRPool()
     llassert(mNumTotalRef <= (FULL_VOLATILE_APR_POOL << 2)) ;
 }
 
-BOOL LLVolatileAPRPool::isFull()
+bool LLVolatileAPRPool::isFull()
 {
     return mNumTotalRef > FULL_VOLATILE_APR_POOL ;
 }
@@ -385,7 +385,7 @@ apr_status_t LLAPRFile::open(const std::string& filename, apr_int32_t flags, LLV
 }
 
 //use gAPRPoolp.
-apr_status_t LLAPRFile::open(const std::string& filename, apr_int32_t flags, BOOL use_global_pool)
+apr_status_t LLAPRFile::open(const std::string& filename, apr_int32_t flags, bool use_global_pool)
 {
     apr_status_t s;
 
@@ -571,7 +571,7 @@ S32 LLAPRFile::readEx(const std::string& filename, void *buf, S32 offset, S32 nb
 }
 
 //static
-S32 LLAPRFile::writeEx(const std::string& filename, void *buf, S32 offset, S32 nbytes, LLVolatileAPRPool* pool)
+S32 LLAPRFile::writeEx(const std::string& filename, const void *buf, S32 offset, S32 nbytes, LLVolatileAPRPool* pool)
 {
     LL_PROFILE_ZONE_SCOPED;
     apr_int32_t flags = APR_CREATE|APR_WRITE|APR_BINARY;
diff --git a/indra/llcommon/llapr.h b/indra/llcommon/llapr.h
index 2f88fdcd59..00ff4d60b7 100644
--- a/indra/llcommon/llapr.h
+++ b/indra/llcommon/llapr.h
@@ -78,7 +78,7 @@ bool LL_COMMON_API ll_apr_is_initialized();
 class LL_COMMON_API LLAPRPool
 {
 public:
-    LLAPRPool(apr_pool_t *parent = NULL, apr_size_t size = 0, BOOL releasePoolFlag = TRUE) ;
+    LLAPRPool(apr_pool_t *parent = NULL, apr_size_t size = 0, bool releasePoolFlag = true) ;
     virtual ~LLAPRPool() ;
 
     virtual apr_pool_t* getAPRPool() ;
@@ -93,7 +93,7 @@ protected:
     apr_pool_t*  mParent ;            //parent pool
     apr_size_t   mMaxSize ;           //max size of mPool, mPool should return memory to system if allocated memory beyond this limit. However it seems not to work.
     apr_status_t mStatus ;            //status when creating the pool
-    BOOL         mReleasePoolFlag ;   //if set, mPool is destroyed when LLAPRPool is deleted. default value is true.
+    bool         mReleasePoolFlag ;   //if set, mPool is destroyed when LLAPRPool is deleted. default value is true.
 };
 
 //
@@ -104,14 +104,14 @@ protected:
 class LL_COMMON_API LLVolatileAPRPool : public LLAPRPool
 {
 public:
-    LLVolatileAPRPool(BOOL is_local = TRUE, apr_pool_t *parent = NULL, apr_size_t size = 0, BOOL releasePoolFlag = TRUE);
+    LLVolatileAPRPool(bool is_local = true, apr_pool_t *parent = NULL, apr_size_t size = 0, bool releasePoolFlag = true);
     virtual ~LLVolatileAPRPool();
 
     /*virtual*/ apr_pool_t* getAPRPool() ; //define this virtual function to avoid any mistakenly calling LLAPRPool::getAPRPool().
     apr_pool_t* getVolatileAPRPool() ;
     void        clearVolatileAPRPool() ;
 
-    BOOL        isFull() ;
+    bool        isFull() ;
 
 private:
     S32 mNumActiveRef ; //number of active pointers pointing to the apr_pool.
@@ -158,7 +158,7 @@ public:
     ~LLAPRFile() ;
 
     apr_status_t open(const std::string& filename, apr_int32_t flags, LLVolatileAPRPool* pool = NULL, S32* sizep = NULL);
-    apr_status_t open(const std::string& filename, apr_int32_t flags, BOOL use_global_pool); //use gAPRPoolp.
+    apr_status_t open(const std::string& filename, apr_int32_t flags, bool use_global_pool); //use gAPRPoolp.
     apr_status_t close() ;
 
     // Returns actual offset, -1 if seek fails
@@ -193,7 +193,7 @@ public:
 
     // Returns bytes read/written, 0 if read/write fails:
     static S32 readEx(const std::string& filename, void *buf, S32 offset, S32 nbytes, LLVolatileAPRPool* pool = NULL);
-    static S32 writeEx(const std::string& filename, void *buf, S32 offset, S32 nbytes, LLVolatileAPRPool* pool = NULL); // offset<0 means append
+    static S32 writeEx(const std::string& filename, const void *buf, S32 offset, S32 nbytes, LLVolatileAPRPool* pool = NULL); // offset<0 means append
 //*******************************************************************************************************************************
 };
 
diff --git a/indra/llcommon/llassettype.cpp b/indra/llcommon/llassettype.cpp
index 3e46bde954..c09cf7abd2 100644
--- a/indra/llcommon/llassettype.cpp
+++ b/indra/llcommon/llassettype.cpp
@@ -97,8 +97,10 @@ LLAssetDictionary::LLAssetDictionary()
     addEntry(LLAssetType::AT_PERSON,            new AssetEntry("PERSON",            "person",   "person",           false,      false,      false));
     addEntry(LLAssetType::AT_SETTINGS,          new AssetEntry("SETTINGS",          "settings", "settings blob",    true,       true,       true));
     addEntry(LLAssetType::AT_MATERIAL,          new AssetEntry("MATERIAL",          "material", "render material",  true,       true,       true));
+    addEntry(LLAssetType::AT_GLTF,              new AssetEntry("GLTF",              "gltf",     "GLTF",             true,       true,       true));
+    addEntry(LLAssetType::AT_GLTF_BIN,          new AssetEntry("GLTF_BIN",          "glbin",    "GLTF binary",      true,       true,        true));
     addEntry(LLAssetType::AT_UNKNOWN,           new AssetEntry("UNKNOWN",           "invalid",  NULL,               false,      false,      false));
-    addEntry(LLAssetType::AT_NONE,              new AssetEntry("NONE",              "-1",       NULL,               FALSE,      FALSE,      FALSE));
+    addEntry(LLAssetType::AT_NONE,              new AssetEntry("NONE",              "-1",       NULL,               false,      false,      false));
 
 };
 
diff --git a/indra/llcommon/llassettype.h b/indra/llcommon/llassettype.h
index 1989155550..547c3f4329 100644
--- a/indra/llcommon/llassettype.h
+++ b/indra/llcommon/llassettype.h
@@ -128,8 +128,10 @@ public:
 
         AT_SETTINGS = 56,   // Collection of settings
         AT_MATERIAL = 57,   // Render Material
+        AT_GLTF = 58,   // gltf json document
+        AT_GLTF_BIN = 59, // gltf binary data
 
-        AT_COUNT = 58,
+        AT_COUNT = 60,
 
             // +*********************************************************+
             // |  TO ADD AN ELEMENT TO THIS ENUM:                        |
diff --git a/indra/llcommon/llbase64.cpp b/indra/llcommon/llbase64.cpp
index dbbbec9813..b8185a0c84 100644
--- a/indra/llcommon/llbase64.cpp
+++ b/indra/llcommon/llbase64.cpp
@@ -59,3 +59,19 @@ std::string LLBase64::encode(const U8* input, size_t input_size)
     return output;
 }
 
+std::string LLBase64::decodeAsString(const std::string &input)
+{
+    int b64_buffer_length = apr_base64_decode_len(input.c_str());
+    char* b64_buffer = new char[b64_buffer_length];
+
+        // This is faster than apr_base64_encode() if you know
+        // you're not on an EBCDIC machine.  Also, the output is
+        // null terminated, even though the documentation doesn't
+        // specify.  See apr_base64.c for details. JC
+    b64_buffer_length = apr_base64_decode(b64_buffer, input.c_str());
+    std::string res;
+    res.assign(b64_buffer);
+    delete[] b64_buffer;
+    return res;
+}
+
diff --git a/indra/llcommon/llbase64.h b/indra/llcommon/llbase64.h
index d4e9d97ea4..4f21e65244 100644
--- a/indra/llcommon/llbase64.h
+++ b/indra/llcommon/llbase64.h
@@ -32,6 +32,7 @@ class LL_COMMON_API LLBase64
 {
 public:
     static std::string encode(const U8* input, size_t input_size);
+    static std::string decodeAsString(const std::string& input);
 };
 
 #endif
diff --git a/indra/llcommon/llcallbacklist.cpp b/indra/llcommon/llcallbacklist.cpp
index b5a58e90b3..3d5d30bd90 100644
--- a/indra/llcommon/llcallbacklist.cpp
+++ b/indra/llcommon/llcallbacklist.cpp
@@ -70,11 +70,11 @@ bool LLCallbackList::containsFunction( callback_t func, void *data)
     callback_list_t::iterator iter = find(func,data);
     if (iter != mCallbackList.end())
     {
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -85,11 +85,11 @@ bool LLCallbackList::deleteFunction( callback_t func, void *data)
     if (iter != mCallbackList.end())
     {
         mCallbackList.erase(iter);
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -191,10 +191,10 @@ public:
     }
 
 private:
-    BOOL tick()
+    bool tick()
     {
         mCallable();
-        return TRUE;
+        return true;
     }
 
     nullary_func_t mCallable;
@@ -215,7 +215,7 @@ public:
     {
     }
 private:
-    BOOL tick()
+    bool tick()
     {
         return mCallable();
     }
diff --git a/indra/llcommon/llcommon.cpp b/indra/llcommon/llcommon.cpp
index 14bdeb5c60..f1f3958fe0 100644
--- a/indra/llcommon/llcommon.cpp
+++ b/indra/llcommon/llcommon.cpp
@@ -115,7 +115,7 @@ void tracy_aligned_free(void *memblock)
 #endif
 
 //static
-BOOL LLCommon::sAprInitialized = FALSE;
+bool LLCommon::sAprInitialized = false;
 
 static LLTrace::ThreadRecorder* sMasterThreadRecorder = NULL;
 
@@ -125,10 +125,9 @@ void LLCommon::initClass()
     if (!sAprInitialized)
     {
         ll_init_apr();
-        sAprInitialized = TRUE;
+        sAprInitialized = true;
     }
     LLTimer::initClass();
-    LLThreadSafeRefCount::initThreadSafeRefCount();
     assert_main_thread();       // Make sure we record the main thread
     if (!sMasterThreadRecorder)
     {
@@ -143,11 +142,10 @@ void LLCommon::cleanupClass()
     delete sMasterThreadRecorder;
     sMasterThreadRecorder = NULL;
     LLTrace::set_master_thread_recorder(NULL);
-    LLThreadSafeRefCount::cleanupThreadSafeRefCount();
     SUBSYSTEM_CLEANUP_DBG(LLTimer);
     if (sAprInitialized)
     {
         ll_cleanup_apr();
-        sAprInitialized = FALSE;
+        sAprInitialized = false;
     }
 }
diff --git a/indra/llcommon/llcommon.h b/indra/llcommon/llcommon.h
index 129e71f703..41a101eb62 100644
--- a/indra/llcommon/llcommon.h
+++ b/indra/llcommon/llcommon.h
@@ -36,7 +36,7 @@ public:
     static void initClass();
     static void cleanupClass();
 private:
-    static BOOL sAprInitialized;
+    static bool sAprInitialized;
 };
 
 #endif
diff --git a/indra/llcommon/llcoros.cpp b/indra/llcommon/llcoros.cpp
index 6285ac86ad..3fe7e09e7e 100644
--- a/indra/llcommon/llcoros.cpp
+++ b/indra/llcommon/llcoros.cpp
@@ -3,25 +3,25 @@
  * @author Nat Goodspeed
  * @date   2009-06-03
  * @brief  Implementation for llcoros.
- * 
+ *
  * $LicenseInfo:firstyear=2009&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2010, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -62,6 +62,23 @@
 #endif
 
 // static
+bool LLCoros::on_main_coro()
+{
+    if (!LLCoros::instanceExists() || LLCoros::getName().empty())
+    {
+        return true;
+    }
+
+    return false;
+}
+
+// static
+bool LLCoros::on_main_thread_main_coro()
+{
+    return on_main_coro() && on_main_thread();
+}
+
+// static
 LLCoros::CoroData& LLCoros::get_CoroData(const std::string& caller)
 {
     CoroData* current{ nullptr };
diff --git a/indra/llcommon/llcoros.h b/indra/llcommon/llcoros.h
index 71c1c1c443..369d65407e 100644
--- a/indra/llcommon/llcoros.h
+++ b/indra/llcommon/llcoros.h
@@ -94,6 +94,16 @@ class LL_COMMON_API LLCoros: public LLSingleton<LLCoros>
 
     void cleanupSingleton() override;
 public:
+    // For debugging, return true if on the main coroutine for the current thread
+    // Code that should not be executed from a coroutine should be protected by
+    // llassert(LLCoros::on_main_coro())
+    static bool on_main_coro();
+
+    // For debugging, return true if on the main thread and not in a coroutine
+    // Non-thread-safe code in the main loop should be protected by
+    // llassert(LLCoros::on_main_thread_main_coro())
+    static bool on_main_thread_main_coro();
+
     /// The viewer's use of the term "coroutine" became deeply embedded before
     /// the industry term "fiber" emerged to distinguish userland threads from
     /// simpler, more transient kinds of coroutines. Semantically they've
diff --git a/indra/llcommon/llcrc.cpp b/indra/llcommon/llcrc.cpp
index 34aa7b46e8..d79d06e2a2 100644
--- a/indra/llcommon/llcrc.cpp
+++ b/indra/llcommon/llcrc.cpp
@@ -200,7 +200,7 @@ void LLCRC::update(const std::string& filename)
 
 
 #ifdef _DEBUG
-BOOL LLCRC::testHarness()
+bool LLCRC::testHarness()
 {
     const S32 TEST_BUFFER_SIZE = 16;
     const char TEST_BUFFER[TEST_BUFFER_SIZE] = "hello &#$)$&Nd0";   /* Flawfinder: ignore */
diff --git a/indra/llcommon/llcrc.h b/indra/llcommon/llcrc.h
index 3b48b778ff..a3bde47780 100644
--- a/indra/llcommon/llcrc.h
+++ b/indra/llcommon/llcrc.h
@@ -59,8 +59,8 @@ public:
 
 #ifdef _DEBUG
     // This function runs tests to make sure the crc is
-    // working. Returns TRUE if it is.
-    static BOOL testHarness();
+    // working. Returns true if it is.
+    static bool testHarness();
 #endif
 };
 
diff --git a/indra/llcommon/lldefs.h b/indra/llcommon/lldefs.h
index 0ba756d472..2fbb26dc1a 100644
--- a/indra/llcommon/lldefs.h
+++ b/indra/llcommon/lldefs.h
@@ -31,64 +31,64 @@
 #include <type_traits>
 
 // Often used array indices
-const U32   VX          = 0;
-const U32   VY          = 1;
-const U32   VZ          = 2;
-const U32   VW          = 3;
-const U32   VS          = 3;
-
-const U32   VRED        = 0;
-const U32   VGREEN      = 1;
-const U32   VBLUE       = 2;
-const U32   VALPHA      = 3;
-
-const U32   INVALID_DIRECTION = 0xFFFFFFFF;
-const U32   EAST        = 0;
-const U32   NORTH       = 1;
-const U32   WEST        = 2;
-const U32   SOUTH       = 3;
-
-const U32   NORTHEAST   = 4;
-const U32   NORTHWEST   = 5;
-const U32   SOUTHWEST   = 6;
-const U32   SOUTHEAST   = 7;
-const U32   MIDDLE      = 8;
-
-const U8    EAST_MASK       = 0x1<<EAST;
-const U8    NORTH_MASK      = 0x1<<NORTH;
-const U8    WEST_MASK       = 0x1<<WEST;
-const U8    SOUTH_MASK      = 0x1<<SOUTH;
-
-const U8    NORTHEAST_MASK  = NORTH_MASK | EAST_MASK;
-const U8    NORTHWEST_MASK  = NORTH_MASK | WEST_MASK;
-const U8    SOUTHWEST_MASK  = SOUTH_MASK | WEST_MASK;
-const U8    SOUTHEAST_MASK  = SOUTH_MASK | EAST_MASK;
-
-const U32 gDirOpposite[8] = {2, 3, 0, 1, 6, 7, 4, 5};
-const U32 gDirAdjacent[8][2] =  {
-                                {4, 7},
-                                {4, 5},
-                                {5, 6},
-                                {6, 7},
-                                {0, 1},
-                                {1, 2},
-                                {2, 3},
-                                {0, 3}
-                                };
+constexpr U32   VX          = 0;
+constexpr U32   VY          = 1;
+constexpr U32   VZ          = 2;
+constexpr U32   VW          = 3;
+constexpr U32   VS          = 3;
+
+constexpr U32   VRED        = 0;
+constexpr U32   VGREEN      = 1;
+constexpr U32   VBLUE       = 2;
+constexpr U32   VALPHA      = 3;
+
+constexpr U32   INVALID_DIRECTION = 0xFFFFFFFF;
+constexpr U32   EAST        = 0;
+constexpr U32   NORTH       = 1;
+constexpr U32   WEST        = 2;
+constexpr U32   SOUTH       = 3;
+
+constexpr U32   NORTHEAST   = 4;
+constexpr U32   NORTHWEST   = 5;
+constexpr U32   SOUTHWEST   = 6;
+constexpr U32   SOUTHEAST   = 7;
+constexpr U32   MIDDLE      = 8;
+
+constexpr U8    EAST_MASK       = 0x1<<EAST;
+constexpr U8    NORTH_MASK      = 0x1<<NORTH;
+constexpr U8    WEST_MASK       = 0x1<<WEST;
+constexpr U8    SOUTH_MASK      = 0x1<<SOUTH;
+
+constexpr U8    NORTHEAST_MASK  = NORTH_MASK | EAST_MASK;
+constexpr U8    NORTHWEST_MASK  = NORTH_MASK | WEST_MASK;
+constexpr U8    SOUTHWEST_MASK  = SOUTH_MASK | WEST_MASK;
+constexpr U8    SOUTHEAST_MASK  = SOUTH_MASK | EAST_MASK;
+
+constexpr U32 gDirOpposite[8] = {2, 3, 0, 1, 6, 7, 4, 5};
+constexpr U32 gDirAdjacent[8][2] =  {
+                                    {4, 7},
+                                    {4, 5},
+                                    {5, 6},
+                                    {6, 7},
+                                    {0, 1},
+                                    {1, 2},
+                                    {2, 3},
+                                    {0, 3}
+                                    };
 
 // Magnitude along the x and y axis
-const S32 gDirAxes[8][2] = {
-                            { 1, 0}, // east
-                            { 0, 1}, // north
-                            {-1, 0}, // west
-                            { 0,-1}, // south
-                            { 1, 1}, // ne
-                            {-1, 1}, // nw
-                            {-1,-1}, // sw
-                            { 1,-1}, // se
-                            };
-
-const S32 gDirMasks[8] = {
+constexpr S32 gDirAxes[8][2] = {
+                               { 1, 0}, // east
+                               { 0, 1}, // north
+                               {-1, 0}, // west
+                               { 0,-1}, // south
+                               { 1, 1}, // ne
+                               {-1, 1}, // nw
+                               {-1,-1}, // sw
+                               { 1,-1}, // se
+                               };
+
+constexpr S32 gDirMasks[8] = {
                             EAST_MASK,
                             NORTH_MASK,
                             WEST_MASK,
@@ -117,22 +117,22 @@ const S32 gDirMasks[8] = {
 //       | /       -6-      | /
 //       |/        /        |/
 //       +------------------+
-const U32 NO_SIDE       = 0;
-const U32 FRONT_SIDE    = 1;
-const U32 BACK_SIDE     = 2;
-const U32 LEFT_SIDE     = 3;
-const U32 RIGHT_SIDE    = 4;
-const U32 TOP_SIDE      = 5;
-const U32 BOTTOM_SIDE   = 6;
-
-const U8 LL_SOUND_FLAG_NONE =         0x0;
-const U8 LL_SOUND_FLAG_LOOP =         1<<0;
-const U8 LL_SOUND_FLAG_SYNC_MASTER =  1<<1;
-const U8 LL_SOUND_FLAG_SYNC_SLAVE =   1<<2;
-const U8 LL_SOUND_FLAG_SYNC_PENDING = 1<<3;
-const U8 LL_SOUND_FLAG_QUEUE =        1<<4;
-const U8 LL_SOUND_FLAG_STOP =         1<<5;
-const U8 LL_SOUND_FLAG_SYNC_MASK = LL_SOUND_FLAG_SYNC_MASTER | LL_SOUND_FLAG_SYNC_SLAVE | LL_SOUND_FLAG_SYNC_PENDING;
+constexpr U32 NO_SIDE       = 0;
+constexpr U32 FRONT_SIDE    = 1;
+constexpr U32 BACK_SIDE     = 2;
+constexpr U32 LEFT_SIDE     = 3;
+constexpr U32 RIGHT_SIDE    = 4;
+constexpr U32 TOP_SIDE      = 5;
+constexpr U32 BOTTOM_SIDE   = 6;
+
+constexpr U8 LL_SOUND_FLAG_NONE =         0x0;
+constexpr U8 LL_SOUND_FLAG_LOOP =         1<<0;
+constexpr U8 LL_SOUND_FLAG_SYNC_MASTER =  1<<1;
+constexpr U8 LL_SOUND_FLAG_SYNC_SLAVE =   1<<2;
+constexpr U8 LL_SOUND_FLAG_SYNC_PENDING = 1<<3;
+constexpr U8 LL_SOUND_FLAG_QUEUE =        1<<4;
+constexpr U8 LL_SOUND_FLAG_STOP =         1<<5;
+constexpr U8 LL_SOUND_FLAG_SYNC_MASK = LL_SOUND_FLAG_SYNC_MASTER | LL_SOUND_FLAG_SYNC_SLAVE | LL_SOUND_FLAG_SYNC_PENDING;
 
 //
 // *NOTE: These values may be used as hard-coded numbers in scanf() variants.
@@ -141,17 +141,17 @@ const U8 LL_SOUND_FLAG_SYNC_MASK = LL_SOUND_FLAG_SYNC_MASTER | LL_SOUND_FLAG_SYN
 // DO NOT CHANGE.
 // --------------
 //
-const U32   LL_MAX_PATH     = 1024;     // buffer size of maximum path + filename string length
+constexpr U32   LL_MAX_PATH     = 1024;     // buffer size of maximum path + filename string length
 
 // For strings we send in messages
-const U32   STD_STRING_BUF_SIZE = 255;  // Buffer size
-const U32   STD_STRING_STR_LEN  = 254;  // Length of the string (not including \0)
+constexpr U32   STD_STRING_BUF_SIZE = 255;  // Buffer size
+constexpr U32   STD_STRING_STR_LEN  = 254;  // Length of the string (not including \0)
 
 // *NOTE: This value is used as hard-coded numbers in scanf() variants.
 // DO NOT CHANGE.
-const U32   MAX_STRING          = STD_STRING_BUF_SIZE;  // Buffer size
+constexpr U32   MAX_STRING          = STD_STRING_BUF_SIZE;  // Buffer size
 
-const U32   MAXADDRSTR      = 17;       // 123.567.901.345 = 15 chars + \0 + 1 for good luck
+constexpr U32   MAXADDRSTR      = 17;       // 123.567.901.345 = 15 chars + \0 + 1 for good luck
 
 // C++ is our friend. . . use template functions to make life easier!
 
diff --git a/indra/llcommon/llerror.cpp b/indra/llcommon/llerror.cpp
index e4843a88eb..fa24987d1c 100644
--- a/indra/llcommon/llerror.cpp
+++ b/indra/llcommon/llerror.cpp
@@ -55,6 +55,7 @@
 #include "llsingleton.h"
 #include "llstl.h"
 #include "lltimer.h"
+#include <boost/fiber/recursive_mutex.hpp>
 
 // On Mac, got:
 // #error "Boost.Stacktrace requires `_Unwind_Backtrace` function. Define
@@ -506,7 +507,7 @@ namespace
         LLError::TimeFunction               mTimeFunction;
 
         Recorders                           mRecorders;
-        LLMutex                             mRecorderMutex;
+        boost::fibers::recursive_mutex      mRecorderMutex;
 
         int                                 mShouldLogCallCounter;
 
@@ -700,7 +701,7 @@ namespace
     bool shouldLogToStderr()
     {
 #if LL_DARWIN
-        // On Mac OS X, stderr from apps launched from the Finder goes to the
+        // On macOS, stderr from apps launched from the Finder goes to the
         // console log.  It's generally considered bad form to spam too much
         // there. That scenario can be detected by noticing that stderr is a
         // character device (S_IFCHR).
@@ -1044,7 +1045,7 @@ namespace LLError
             return;
         }
         SettingsConfigPtr s = Globals::getInstance()->getSettingsConfig();
-        LLMutexLock lock(&s->mRecorderMutex);
+        std::unique_lock lock(s->mRecorderMutex);
         s->mRecorders.push_back(recorder);
     }
 
@@ -1055,7 +1056,7 @@ namespace LLError
             return;
         }
         SettingsConfigPtr s = Globals::getInstance()->getSettingsConfig();
-        LLMutexLock lock(&s->mRecorderMutex);
+        std::unique_lock lock(s->mRecorderMutex);
         s->mRecorders.erase(std::remove(s->mRecorders.begin(), s->mRecorders.end(), recorder),
                             s->mRecorders.end());
     }
@@ -1104,7 +1105,7 @@ namespace LLError
     std::shared_ptr<RECORDER> findRecorder()
     {
         SettingsConfigPtr s = Globals::getInstance()->getSettingsConfig();
-        LLMutexLock lock(&s->mRecorderMutex);
+        std::unique_lock lock(s->mRecorderMutex);
         return findRecorderPos<RECORDER>(s).first;
     }
 
@@ -1115,7 +1116,7 @@ namespace LLError
     bool removeRecorder()
     {
         SettingsConfigPtr s = Globals::getInstance()->getSettingsConfig();
-        LLMutexLock lock(&s->mRecorderMutex);
+        std::unique_lock lock(s->mRecorderMutex);
         auto found = findRecorderPos<RECORDER>(s);
         if (found.first)
         {
@@ -1221,7 +1222,7 @@ namespace
 
         std::string escaped_message;
 
-        LLMutexLock lock(&s->mRecorderMutex);
+        std::unique_lock lock(s->mRecorderMutex);
         for (LLError::RecorderPtr& r : s->mRecorders)
         {
             if (!r->enabled())
diff --git a/indra/llcommon/lleventemitter.h b/indra/llcommon/lleventemitter.h
index 14160e1e76..b9de854fda 100644
--- a/indra/llcommon/lleventemitter.h
+++ b/indra/llcommon/lleventemitter.h
@@ -57,14 +57,14 @@ class eventEmitter
 
         ///////////////////////////////////////////////////////////////////////////////
         //
-        BOOL addObserver ( T* observerIn )
+        bool addObserver ( T* observerIn )
         {
             if ( ! observerIn )
-                return FALSE;
+                return false;
 
             // check if observer already exists
             if ( std::find ( observers.begin (), observers.end (), observerIn ) != observers.end () )
-                return FALSE;
+                return false;
 
             // save it
             observers.push_back ( observerIn );
@@ -74,14 +74,14 @@ class eventEmitter
 
         ///////////////////////////////////////////////////////////////////////////////
         //
-        BOOL remObserver ( T* observerIn )
+        bool remObserver ( T* observerIn )
         {
             if ( ! observerIn )
-                return FALSE;
+                return false;
 
             observers.remove ( observerIn );
 
-            return TRUE;
+            return true;
         };
 
         ///////////////////////////////////////////////////////////////////////////////
diff --git a/indra/llcommon/llevents.cpp b/indra/llcommon/llevents.cpp
index 5b4e69659d..3c6743eac9 100644
--- a/indra/llcommon/llevents.cpp
+++ b/indra/llcommon/llevents.cpp
@@ -382,7 +382,7 @@ std::string LLEventPump::inventName(const std::string& pfx)
 
 void LLEventPump::clear()
 {
-    LLMutexLock lock(&mConnectionListMutex);
+    LLCoros::LockType lock(mConnectionListMutex);
     // Destroy the original LLStandardSignal instance, replacing it with a
     // whole new one.
     mSignal = std::make_shared<LLStandardSignal>();
@@ -394,7 +394,7 @@ void LLEventPump::reset()
 {
     // Resetting mSignal is supposed to disconnect everything on its own
     // But due to crash on 'reset' added explicit cleanup to get more data
-    LLMutexLock lock(&mConnectionListMutex);
+    LLCoros::LockType lock(mConnectionListMutex);
     ConnectionMap::const_iterator iter = mConnections.begin();
     ConnectionMap::const_iterator end = mConnections.end();
     while (iter!=end)
@@ -419,7 +419,7 @@ LLBoundListener LLEventPump::listen_impl(const std::string& name, const LLEventL
         return LLBoundListener();
     }
 
-    LLMutexLock lock(&mConnectionListMutex);
+    LLCoros::LockType lock(mConnectionListMutex);
 
     float nodePosition = 1.0;
 
@@ -582,7 +582,7 @@ LLBoundListener LLEventPump::listen_impl(const std::string& name, const LLEventL
 
 LLBoundListener LLEventPump::getListener(const std::string& name)
 {
-    LLMutexLock lock(&mConnectionListMutex);
+    LLCoros::LockType lock(mConnectionListMutex);
     ConnectionMap::const_iterator found = mConnections.find(name);
     if (found != mConnections.end())
     {
@@ -594,7 +594,7 @@ LLBoundListener LLEventPump::getListener(const std::string& name)
 
 void LLEventPump::stopListening(const std::string& name)
 {
-    LLMutexLock lock(&mConnectionListMutex);
+    LLCoros::LockType lock(mConnectionListMutex);
     ConnectionMap::iterator found = mConnections.find(name);
     if (found != mConnections.end())
     {
diff --git a/indra/llcommon/llevents.h b/indra/llcommon/llevents.h
index 9a0a6863f0..f97fca0a32 100644
--- a/indra/llcommon/llevents.h
+++ b/indra/llcommon/llevents.h
@@ -61,6 +61,7 @@
 #include "llstl.h"
 #include "llexception.h"
 #include "llhandle.h"
+#include "llcoros.h"
 
 /*==========================================================================*|
 // override this to allow binding free functions with more parameters
@@ -601,7 +602,7 @@ private:
     LLHandle<LLEventPumps> mRegistry;
 
     std::string mName;
-    LLMutex mConnectionListMutex;
+    LLCoros::Mutex mConnectionListMutex;
 
 protected:
     virtual LLBoundListener listen_impl(const std::string& name, const LLEventListener&,
diff --git a/indra/llcommon/lleventtimer.h b/indra/llcommon/lleventtimer.h
index ed6f10d5e1..e0c2381807 100644
--- a/indra/llcommon/lleventtimer.h
+++ b/indra/llcommon/lleventtimer.h
@@ -43,7 +43,7 @@ public:
 
     //function to be called at the supplied frequency
     // Normally return FALSE; TRUE will delete the timer after the function returns.
-    virtual BOOL tick() = 0;
+    virtual bool tick() = 0;
 
     static void updateClass();
 
@@ -86,7 +86,7 @@ public:
         mOnce(once),
         mCallable(callable)
     {}
-    BOOL tick() override
+    bool tick() override
     {
         mCallable();
         // true tells updateClass() to delete this instance
diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h
index cf5e43d805..a69a03e419 100644
--- a/indra/llcommon/llfasttimer.h
+++ b/indra/llcommon/llfasttimer.h
@@ -229,7 +229,7 @@ private:
 
 private:
     U64                     mStartTime;
-    BlockTimerStackRecord   mParentTimerData;
+    BlockTimerStackRecord   mParentTimerData{};
 
 public:
     // statics
diff --git a/indra/llcommon/llfile.cpp b/indra/llcommon/llfile.cpp
index 1877dd54ed..ddf239f306 100644
--- a/indra/llcommon/llfile.cpp
+++ b/indra/llcommon/llfile.cpp
@@ -27,6 +27,12 @@
  * $/LicenseInfo$
  */
 
+#include "linden_common.h"
+#include "llfile.h"
+#include "llstring.h"
+#include "llerror.h"
+#include "stringize.h"
+
 #if LL_WINDOWS
 #include "llwin32headerslean.h"
 #include <stdlib.h>                 // Windows errno
@@ -35,12 +41,6 @@
 #include <errno.h>
 #endif
 
-#include "linden_common.h"
-#include "llfile.h"
-#include "llstring.h"
-#include "llerror.h"
-#include "stringize.h"
-
 using namespace std;
 
 static std::string empty;
@@ -345,7 +345,7 @@ const char *LLFile::tmpdir()
         sep = '\\';
 
         std::vector<wchar_t> utf16path(MAX_PATH + 1);
-        GetTempPathW(utf16path.size(), &utf16path[0]);
+        GetTempPathW(static_cast<DWORD>(utf16path.size()), &utf16path[0]);
         utf8path = ll_convert_wide_to_string(&utf16path[0]);
 #else
         sep = '/';
diff --git a/indra/llcommon/llfile.h b/indra/llcommon/llfile.h
index 08a008c19a..2564671b13 100644
--- a/indra/llcommon/llfile.h
+++ b/indra/llcommon/llfile.h
@@ -97,7 +97,7 @@ public:
     // no copy
     LLUniqueFile(const LLUniqueFile&) = delete;
     // move construction
-    LLUniqueFile(LLUniqueFile&& other)
+    LLUniqueFile(LLUniqueFile&& other) noexcept
     {
         mFileHandle = other.mFileHandle;
         other.mFileHandle = nullptr;
@@ -118,7 +118,7 @@ public:
     // copy assignment deleted
     LLUniqueFile& operator=(const LLUniqueFile&) = delete;
     // move assignment
-    LLUniqueFile& operator=(LLUniqueFile&& other)
+    LLUniqueFile& operator=(LLUniqueFile&& other) noexcept
     {
         close();
         std::swap(mFileHandle, other.mFileHandle);
diff --git a/indra/llcommon/llfindlocale.cpp b/indra/llcommon/llfindlocale.cpp
index e39812bfc4..ac52f90c9f 100644
--- a/indra/llcommon/llfindlocale.cpp
+++ b/indra/llcommon/llfindlocale.cpp
@@ -157,14 +157,22 @@ canonise_fl(FL_Locale *l) {
   if (l->lang && 0 == strcmp(l->lang, "en")) {
     if (l->country && 0 == strcmp(l->country, "UK")) {
       free((void*)l->country);
+#ifdef LL_WINDOWS
+      l->country = _strdup("GB");
+#else
       l->country = strdup("GB");
+#endif
     }
   }
   /* ja_JA -> ja_JP */
   if (l->lang && 0 == strcmp(l->lang, "ja")) {
     if (l->country && 0 == strcmp(l->country, "JA")) {
       free((void*)l->country);
+#ifdef LL_WINDOWS
+      l->country = _strdup("JP");
+#else
       l->country = strdup("JP");
+#endif
     }
   }
 }
diff --git a/indra/llcommon/llfixedbuffer.h b/indra/llcommon/llfixedbuffer.h
index eca0792d35..1234d2014f 100644
--- a/indra/llcommon/llfixedbuffer.h
+++ b/indra/llcommon/llfixedbuffer.h
@@ -33,6 +33,7 @@
 #include "llstring.h"
 #include "llthread.h"
 #include "llerrorcontrol.h"
+#include "llcoros.h"
 
 //  fixed buffer implementation
 class LL_COMMON_API LLFixedBuffer : public LLLineBuffer
@@ -58,7 +59,7 @@ protected:
     void addWLine(const LLWString& line);
 
 protected:
-    LLMutex mMutex ;
+    LLCoros::Mutex mMutex ;
 };
 
 #endif //LL_FIXED_BUFFER_H
diff --git a/indra/llcommon/llframetimer.cpp b/indra/llcommon/llframetimer.cpp
index 2805662d6f..a0080b57bb 100644
--- a/indra/llcommon/llframetimer.cpp
+++ b/indra/llcommon/llframetimer.cpp
@@ -52,12 +52,12 @@ void LLFrameTimer::updateFrameTime()
 void LLFrameTimer::start()
 {
     reset();
-    mStarted = TRUE;
+    mStarted = true;
 }
 
 void LLFrameTimer::stop()
 {
-    mStarted = FALSE;
+    mStarted = false;
 }
 
 void LLFrameTimer::reset()
@@ -84,14 +84,14 @@ void LLFrameTimer::pause()
 {
     if (mStarted)
         mStartTime = sFrameTime - mStartTime; // save dtime
-    mStarted = FALSE;
+    mStarted = false;
 }
 
 void LLFrameTimer::unpause()
 {
     if (!mStarted)
         mStartTime = sFrameTime - mStartTime; // restore dtime
-    mStarted = TRUE;
+    mStarted = true;
 }
 
 void LLFrameTimer::setTimerExpirySec(F32 expiration)
@@ -112,7 +112,7 @@ F64 LLFrameTimer::expiresAt() const
     return expires_at;
 }
 
-BOOL LLFrameTimer::checkExpirationAndReset(F32 expiration)
+bool LLFrameTimer::checkExpirationAndReset(F32 expiration)
 {
     //LL_INFOS() << "LLFrameTimer::checkExpirationAndReset()" << LL_ENDL;
     //LL_INFOS() << "  mStartTime:" << mStartTime << LL_ENDL;
@@ -123,9 +123,9 @@ BOOL LLFrameTimer::checkExpirationAndReset(F32 expiration)
     {
         reset();
         setTimerExpirySec(expiration);
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 // static
diff --git a/indra/llcommon/llframetimer.h b/indra/llcommon/llframetimer.h
index 876d933fd1..ba4f075b57 100644
--- a/indra/llcommon/llframetimer.h
+++ b/indra/llcommon/llframetimer.h
@@ -39,7 +39,7 @@
 class LL_COMMON_API LLFrameTimer
 {
 public:
-    LLFrameTimer() : mStartTime( sFrameTime ), mExpiry(0), mStarted(TRUE) {}
+    LLFrameTimer() : mStartTime( sFrameTime ), mExpiry(0), mStarted(true) {}
 
     // Return the number of seconds since the start of this
     // application instance.
@@ -84,16 +84,16 @@ public:
     void unpause();
     void setTimerExpirySec(F32 expiration);
     void setExpiryAt(F64 seconds_since_epoch);
-    BOOL checkExpirationAndReset(F32 expiration);
+    bool checkExpirationAndReset(F32 expiration);
     F32 getElapsedTimeAndResetF32()                 { F32 t = F32(sFrameTime - mStartTime); reset(); return t; }
 
     void setAge(const F64 age)                      { mStartTime = sFrameTime - age; }
 
     // ACCESSORS
-    BOOL hasExpired() const                         { return (sFrameTime >= mExpiry); }
+    bool hasExpired() const                         { return (sFrameTime >= mExpiry); }
     F32  getTimeToExpireF32() const                 { return (F32)(mExpiry - sFrameTime); }
     F32  getElapsedTimeF32() const                  { return mStarted ? (F32)(sFrameTime - mStartTime) : (F32)mStartTime; }
-    BOOL getStarted() const                         { return mStarted; }
+    bool getStarted() const                         { return mStarted; }
 
     // return the seconds since epoch when this timer will expire.
     F64 expiresAt() const;
@@ -142,7 +142,7 @@ protected:
 
     // Useful bit of state usually associated with timers, but does
     // not affect actual functionality
-    BOOL mStarted;
+    bool mStarted;
 };
 
 // Glue code for Havok (or anything else that doesn't want the full .h files)
diff --git a/indra/llcommon/llindexedvector.h b/indra/llcommon/llindexedvector.h
index de3ae0dcc4..0b2e9c76ca 100644
--- a/indra/llcommon/llindexedvector.h
+++ b/indra/llcommon/llindexedvector.h
@@ -47,7 +47,7 @@ public:
     typedef typename std::vector<Type>::size_type size_type;
 protected:
     std::vector<Type> mVector;
-    std::map<Key, U32> mIndexMap;
+    std::map<Key, size_t> mIndexMap;
 
 public:
     LLIndexedVector() { mVector.reserve(BlockSize); }
@@ -68,10 +68,10 @@ public:
 
     Type& operator[](const Key& k)
     {
-        typename std::map<Key, U32>::const_iterator iter = mIndexMap.find(k);
+        typename std::map<Key, size_t>::const_iterator iter = mIndexMap.find(k);
         if (iter == mIndexMap.end())
         {
-            U32 n = mVector.size();
+            auto n = mVector.size();
             mIndexMap[k] = n;
             mVector.push_back(Type());
             llassert(mVector.size() == mIndexMap.size());
@@ -85,7 +85,7 @@ public:
 
     const_iterator find(const Key& k) const
     {
-        typename std::map<Key, U32>::const_iterator iter = mIndexMap.find(k);
+        typename std::map<Key, size_t>::const_iterator iter = mIndexMap.find(k);
         if(iter == mIndexMap.end())
         {
             return mVector.end();
diff --git a/indra/llcommon/llkeythrottle.h b/indra/llcommon/llkeythrottle.h
index a5b5eaa946..8ee0e08c69 100644
--- a/indra/llcommon/llkeythrottle.h
+++ b/indra/llcommon/llkeythrottle.h
@@ -91,9 +91,9 @@ template< class T >
 class LLKeyThrottle
 {
 public:
-    // @param realtime = FALSE for frame-based throttle, TRUE for usec
+    // @param realtime = false for frame-based throttle, true for usec
     // real-time throttle
-    LLKeyThrottle(U32 limit, F32 interval, BOOL realtime = TRUE)
+    LLKeyThrottle(U32 limit, F32 interval, bool realtime = true)
         : m(* new LLKeyThrottleImpl<T>)
     {
         setParameters( limit, interval, realtime );
@@ -287,7 +287,7 @@ public:
     }
 
     // Get the throttling parameters
-    void getParameters( U32 & out_limit, F32 & out_interval, BOOL & out_realtime )
+    void getParameters( U32 & out_limit, F32 & out_interval, bool & out_realtime )
     {
         out_limit = m.countLimit;
         out_interval = m.intervalLength;
@@ -295,7 +295,7 @@ public:
     }
 
     // Set the throttling behavior
-    void setParameters( U32 limit, F32 interval, BOOL realtime = TRUE )
+    void setParameters( U32 limit, F32 interval, bool realtime = true )
     {
         // limit is the maximum number of keys
         // allowed per interval (in seconds or frames)
@@ -325,7 +325,7 @@ public:
 
 protected:
     LLKeyThrottleImpl<T>& m;
-    BOOL    mIsRealtime;    // TRUE to be time based (default), FALSE for frame based
+    bool    mIsRealtime;    // true to be time based (default), false for frame based
 };
 
 #endif
diff --git a/indra/llcommon/llleap.cpp b/indra/llcommon/llleap.cpp
index e93ba83434..662a2511cd 100644
--- a/indra/llcommon/llleap.cpp
+++ b/indra/llcommon/llleap.cpp
@@ -233,7 +233,7 @@ public:
 
         LL_DEBUGS("EventHost") << "Sending: "
                                << static_cast<U64>(buffer.tellp()) << ':';
-        std::string::size_type truncate(80);
+        llssize truncate(80);
         if (buffer.tellp() <= truncate)
         {
             LL_CONT << buffer.str();
diff --git a/indra/llcommon/lllivefile.cpp b/indra/llcommon/lllivefile.cpp
index 15651a6813..58de61a7e4 100644
--- a/indra/llcommon/lllivefile.cpp
+++ b/indra/llcommon/lllivefile.cpp
@@ -170,10 +170,10 @@ namespace
             : LLEventTimer(refresh), mLiveFile(f)
             { }
 
-        BOOL tick()
+        bool tick()
         {
             mLiveFile.checkAndReload();
-            return FALSE;
+            return false;
         }
 
     private:
diff --git a/indra/llcommon/llmainthreadtask.h b/indra/llcommon/llmainthreadtask.h
index 28ad62830b..cec95b2356 100644
--- a/indra/llcommon/llmainthreadtask.h
+++ b/indra/llcommon/llmainthreadtask.h
@@ -79,13 +79,13 @@ private:
             LLEventTimer(0),
             mTask(std::forward<CALLABLE>(callable))
         {}
-        BOOL tick() override
+        bool tick() override
         {
             // run the task on the main thread, will populate the future
             // obtained by get_future()
             mTask();
             // tell LLEventTimer we're done (one shot)
-            return TRUE;
+            return true;
         }
         // Given arbitrary CALLABLE, which might be a lambda, how are we
         // supposed to obtain its signature for std::packaged_task? It seems
diff --git a/indra/llcommon/llmemory.cpp b/indra/llcommon/llmemory.cpp
index cf5ead718d..4b7d60d654 100644
--- a/indra/llcommon/llmemory.cpp
+++ b/indra/llcommon/llmemory.cpp
@@ -190,7 +190,7 @@ void* LLMemory::tryToAlloc(void* address, U32 size)
 }
 
 //static
-void LLMemory::logMemoryInfo(BOOL update)
+void LLMemory::logMemoryInfo(bool update)
 {
     LL_PROFILE_ZONE_SCOPED
     if(update)
@@ -327,8 +327,8 @@ void* ll_aligned_malloc_fallback( size_t size, int align )
         __asm int 3;
     }
     DWORD old;
-    BOOL Res = VirtualProtect((void*)((char*)p + for_alloc), sysinfo.dwPageSize, PAGE_NOACCESS, &old);
-    if(FALSE == Res) {
+    bool Res = VirtualProtect((void*)((char*)p + for_alloc), sysinfo.dwPageSize, PAGE_NOACCESS, &old);
+    if(false == Res) {
         // call debugger
         __asm int 3;
     }
diff --git a/indra/llcommon/llmemory.h b/indra/llcommon/llmemory.h
index b73030d978..671ebc38e2 100644
--- a/indra/llcommon/llmemory.h
+++ b/indra/llcommon/llmemory.h
@@ -138,7 +138,7 @@ public:                                     \
     void ll_aligned_free_fallback( void* ptr );
 //------------------------------------------------------------------------------------------------
 #else
-    inline void* ll_aligned_malloc_fallback( size_t size, int align )
+    inline void* ll_aligned_malloc_fallback( size_t size, size_t align )
     {
         LL_PROFILE_ZONE_SCOPED_CATEGORY_MEMORY;
     #if defined(LL_WINDOWS)
@@ -394,7 +394,7 @@ public:
     static void* tryToAlloc(void* address, U32 size);
     static void initMaxHeapSizeGB(F32Gigabytes max_heap_size);
     static void updateMemoryInfo() ;
-    static void logMemoryInfo(BOOL update = FALSE);
+    static void logMemoryInfo(bool update = false);
 
     static U32Kilobytes getAvailableMemKB() ;
     static U32Kilobytes getMaxMemKB() ;
diff --git a/indra/llcommon/llmetricperformancetester.cpp b/indra/llcommon/llmetricperformancetester.cpp
index e05c2558f6..cc258e4609 100644
--- a/indra/llcommon/llmetricperformancetester.cpp
+++ b/indra/llcommon/llmetricperformancetester.cpp
@@ -50,18 +50,18 @@ void LLMetricPerformanceTesterBasic::cleanupClass()
 }
 
 /*static*/
-BOOL LLMetricPerformanceTesterBasic::addTester(LLMetricPerformanceTesterBasic* tester)
+bool LLMetricPerformanceTesterBasic::addTester(LLMetricPerformanceTesterBasic* tester)
 {
     llassert_always(tester != NULL);
     std::string name = tester->getTesterName() ;
     if (getTester(name))
     {
         LL_ERRS() << "Tester name is already used by some other tester : " << name << LL_ENDL ;
-        return FALSE;
+        return false;
     }
 
     sTesterMap.insert(std::make_pair(name, tester));
-    return TRUE;
+    return true;
 }
 
 /*static*/
@@ -88,8 +88,8 @@ LLMetricPerformanceTesterBasic* LLMetricPerformanceTesterBasic::getTester(std::s
 }
 
 /*static*/
-// Return TRUE if this metric is requested or if the general default "catch all" metric is requested
-BOOL LLMetricPerformanceTesterBasic::isMetricLogRequested(std::string name)
+// Return true if this metric is requested or if the general default "catch all" metric is requested
+bool LLMetricPerformanceTesterBasic::isMetricLogRequested(std::string name)
 {
     return (LLTrace::BlockTimer::sMetricLog && ((LLTrace::BlockTimer::sLogName == name) || (LLTrace::BlockTimer::sLogName == DEFAULT_METRIC_NAME)));
 }
@@ -215,8 +215,8 @@ void LLMetricPerformanceTesterBasic::analyzePerformance(llofstream* os, LLSD* ba
     resetCurrentCount() ;
 
     std::string current_label = getCurrentLabelName();
-    BOOL in_base = (*base).has(current_label) ;
-    BOOL in_current = (*current).has(current_label) ;
+    bool in_base = (*base).has(current_label) ;
+    bool in_current = (*current).has(current_label) ;
 
     while(in_base || in_current)
     {
diff --git a/indra/llcommon/llmetricperformancetester.h b/indra/llcommon/llmetricperformancetester.h
index 15c564f2ca..78abd53602 100644
--- a/indra/llcommon/llmetricperformancetester.h
+++ b/indra/llcommon/llmetricperformancetester.h
@@ -48,7 +48,7 @@ public:
      * Need to be tested after creation of a tester instance so to know if the tester is correctly handled.
      * A tester might not be added to the map if another tester with the same name already exists.
      */
-    BOOL isValid() const { return mValidInstance; }
+    bool isValid() const { return mValidInstance; }
 
     /**
      * @brief Write a set of test results to the log LLSD.
@@ -122,7 +122,7 @@ private:
 
     std::string mName ;                         // Name of this tester instance
     S32 mCount ;                                // Current record count
-    BOOL mValidInstance;                        // TRUE if the instance is managed by the map
+    bool mValidInstance;                        // true if the instance is managed by the map
     std::vector< std::string > mMetricStrings ; // Metrics strings
 
 // Static members managing the collection of testers
@@ -144,15 +144,15 @@ public:
     static void deleteTester(std::string name);
 
     /**
-     * @return Returns TRUE if that metric *or* the default catch all metric has been requested to be logged
+     * @return Returns true if that metric *or* the default catch all metric has been requested to be logged
      * @param[in] name - Name of the tester queried.
      */
-    static BOOL isMetricLogRequested(std::string name);
+    static bool isMetricLogRequested(std::string name);
 
     /**
-     * @return Returns TRUE if there's a tester defined, FALSE otherwise.
+     * @return Returns true if there's a tester defined, false otherwise.
      */
-    static BOOL hasMetricPerformanceTesters() { return !sTesterMap.empty() ;}
+    static bool hasMetricPerformanceTesters() { return !sTesterMap.empty() ;}
     /**
      * @brief Delete all testers and reset the tester map
      */
@@ -160,7 +160,7 @@ public:
 
 private:
     // Add a tester to the map. Returns false if adding fails.
-    static BOOL addTester(LLMetricPerformanceTesterBasic* tester) ;
+    static bool addTester(LLMetricPerformanceTesterBasic* tester) ;
 };
 
 /**
diff --git a/indra/llcommon/llmortician.cpp b/indra/llcommon/llmortician.cpp
index 00d4a32553..578d72388c 100644
--- a/indra/llcommon/llmortician.cpp
+++ b/indra/llcommon/llmortician.cpp
@@ -30,7 +30,7 @@
 
 std::list<LLMortician*> LLMortician::sGraveyard;
 
-BOOL LLMortician::sDestroyImmediate = FALSE;
+bool LLMortician::sDestroyImmediate = false;
 
 LLMortician::~LLMortician()
 {
@@ -88,19 +88,19 @@ void LLMortician::die()
     if (sDestroyImmediate)
     {
         // *NOTE: This is a hack to ensure destruction order on shutdown (relative to non-mortician controlled classes).
-        mIsDead = TRUE;
+        mIsDead = true;
         delete this;
         return;
     }
     else if (!mIsDead)
     {
-        mIsDead = TRUE;
+        mIsDead = true;
         sGraveyard.push_back(this);
     }
 }
 
 // static
-void LLMortician::setZealous(BOOL b)
+void LLMortician::setZealous(bool b)
 {
     sDestroyImmediate = b;
 }
diff --git a/indra/llcommon/llmortician.h b/indra/llcommon/llmortician.h
index 6dca4da0c9..b2d81fa1c5 100644
--- a/indra/llcommon/llmortician.h
+++ b/indra/llcommon/llmortician.h
@@ -33,21 +33,21 @@
 class LL_COMMON_API LLMortician
 {
 public:
-    LLMortician() { mIsDead = FALSE; }
+    LLMortician() { mIsDead = false; }
     static auto graveyardCount() { return sGraveyard.size(); };
     static size_t logClass(std::stringstream &str);
     static void updateClass();
     virtual ~LLMortician();
     void die();
-    BOOL isDead() { return mIsDead; }
+    bool isDead() { return mIsDead; }
 
     // sets destroy immediate true
-    static void setZealous(BOOL b);
+    static void setZealous(bool b);
 
 private:
-    static BOOL sDestroyImmediate;
+    static bool sDestroyImmediate;
 
-    BOOL mIsDead;
+    bool mIsDead;
 
     static std::list<LLMortician*> sGraveyard;
 };
diff --git a/indra/llcommon/llmutex.cpp b/indra/llcommon/llmutex.cpp
index db14abb1fe..40c651d9c1 100644
--- a/indra/llcommon/llmutex.cpp
+++ b/indra/llcommon/llmutex.cpp
@@ -28,23 +28,35 @@
 #include "llmutex.h"
 #include "llthread.h"
 #include "lltimer.h"
+#include "llcoros.h"
 
-//============================================================================
 
+//---------------------------------------------------------------------
+//
+// LLMutex
+//
 LLMutex::LLMutex() :
  mCount(0)
 {
 }
 
-
 LLMutex::~LLMutex()
 {
 }
 
-
 void LLMutex::lock()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD;
+
+    // LLMutex is not coroutine aware and should not be used from a coroutine
+    // If your code is running in a coroutine, you should use LLCoros::Mutex instead
+    // NOTE:  If the stack trace you're staring at contains non-thread-safe code,
+    // you should use LLAppViewer::instance().postToMainThread() to shuttle execution
+    // back to the main loop.
+    // NOTE: If you got here from seeing this assert in your log and you're not seeing
+    // a stack trace that points here, put a breakpoint in on_main_coro and try again.
+    llassert(LLCoros::on_main_coro());
+
     if(isSelfLocked())
     { //redundant lock
         mCount++;
@@ -56,9 +68,9 @@ void LLMutex::lock()
 #if MUTEX_DEBUG
     // Have to have the lock before we can access the debug info
     auto id = LLThread::currentID();
-    if (mIsLocked[id] != FALSE)
+    if (mIsLocked[id])
         LL_ERRS() << "Already locked in Thread: " << id << LL_ENDL;
-    mIsLocked[id] = TRUE;
+    mIsLocked[id] = true;
 #endif
 
     mLockingThread = LLThread::currentID();
@@ -66,7 +78,8 @@ void LLMutex::lock()
 
 void LLMutex::unlock()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD;
+
     if (mCount > 0)
     { //not the root unlock
         mCount--;
@@ -76,9 +89,9 @@ void LLMutex::unlock()
 #if MUTEX_DEBUG
     // Access the debug info while we have the lock
     auto id = LLThread::currentID();
-    if (mIsLocked[id] != TRUE)
+    if (!mIsLocked[id])
         LL_ERRS() << "Not locked in Thread: " << id << LL_ENDL;
-    mIsLocked[id] = FALSE;
+    mIsLocked[id] = false;
 #endif
 
     mLockingThread = LLThread::id_t();
@@ -112,7 +125,7 @@ LLThread::id_t LLMutex::lockingThread() const
 bool LLMutex::trylock()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
-    if(isSelfLocked())
+    if (isSelfLocked())
     { //redundant lock
         mCount++;
         return true;
@@ -126,28 +139,203 @@ bool LLMutex::trylock()
 #if MUTEX_DEBUG
     // Have to have the lock before we can access the debug info
     auto id = LLThread::currentID();
-    if (mIsLocked[id] != FALSE)
+    if (mIsLocked[id])
         LL_ERRS() << "Already locked in Thread: " << id << LL_ENDL;
-    mIsLocked[id] = TRUE;
+    mIsLocked[id] = true;
 #endif
 
     mLockingThread = LLThread::currentID();
     return true;
 }
 
-//============================================================================
 
+//---------------------------------------------------------------------
+//
+// LLSharedMutex
+//
+LLSharedMutex::LLSharedMutex()
+: mLockingThreads(2) // Reserve 2 slots in the map hash table
+, mIsShared(false)
+{
+}
+
+bool LLSharedMutex::isLocked() const
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
+    std::lock_guard<std::mutex> lock(mLockMutex);
+
+    return !mLockingThreads.empty();
+}
+
+bool LLSharedMutex::isThreadLocked() const
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
+    LLThread::id_t current_thread = LLThread::currentID();
+    std::lock_guard<std::mutex> lock(mLockMutex);
+
+    const_iterator it = mLockingThreads.find(current_thread);
+    return it != mLockingThreads.end();
+}
+
+void LLSharedMutex::lockShared()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
+    LLThread::id_t current_thread = LLThread::currentID();
+
+    mLockMutex.lock();
+    iterator it = mLockingThreads.find(current_thread);
+    if (it != mLockingThreads.end())
+    {
+        it->second++;
+    }
+    else
+    {
+        // Acquire the mutex immediately if the mutex is not locked exclusively
+        // or enter a locking state if the mutex is already locked exclusively
+        mLockMutex.unlock();
+        mSharedMutex.lock_shared();
+        mLockMutex.lock();
+        // Continue after acquiring the mutex
+        mLockingThreads.emplace(std::make_pair(current_thread, 1));
+        mIsShared = true;
+    }
+    mLockMutex.unlock();
+}
+
+void LLSharedMutex::lockExclusive()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
+    LLThread::id_t current_thread = LLThread::currentID();
+
+    mLockMutex.lock();
+    iterator it = mLockingThreads.find(current_thread);
+    if (it != mLockingThreads.end())
+    {
+        if (mIsShared)
+        {
+            // The mutex is already locked in the current thread
+            // but this lock is SHARED (not EXCLISIVE)
+            // We can't lock it again, the lock stays shared
+            // This can lead to a collision (theoretically)
+            llassert_always(!"The current thread is already locked SHARED and can't be locked EXCLUSIVE");
+        }
+        it->second++;
+    }
+    else
+    {
+        // Acquire the mutex immediately if mLockingThreads is empty
+        // or enter a locking state if mLockingThreads is not empty
+        mLockMutex.unlock();
+        mSharedMutex.lock();
+        mLockMutex.lock();
+        // Continue after acquiring the mutex (and possible quitting the locking state)
+        mLockingThreads.emplace(std::make_pair(current_thread, 1));
+        mIsShared = false;
+    }
+    mLockMutex.unlock();
+}
+
+bool LLSharedMutex::trylockShared()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
+    LLThread::id_t current_thread = LLThread::currentID();
+    std::lock_guard<std::mutex> lock(mLockMutex);
+
+    iterator it = mLockingThreads.find(current_thread);
+    if (it != mLockingThreads.end())
+    {
+        it->second++;
+    }
+    else
+    {
+        if (!mSharedMutex.try_lock_shared())
+            return false;
+
+        mLockingThreads.emplace(std::make_pair(current_thread, 1));
+        mIsShared = true;
+    }
+
+    return true;
+}
+
+bool LLSharedMutex::trylockExclusive()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
+    LLThread::id_t current_thread = LLThread::currentID();
+    std::lock_guard<std::mutex> lock(mLockMutex);
+
+    if (mLockingThreads.size() == 1 && mLockingThreads.begin()->first == current_thread)
+    {
+        mLockingThreads.begin()->second++;
+    }
+    else
+    {
+        if (!mSharedMutex.try_lock())
+            return false;
+
+        mLockingThreads.emplace(std::make_pair(current_thread, 1));
+        mIsShared = false;
+    }
+
+    return true;
+}
+
+void LLSharedMutex::unlockShared()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
+    LLThread::id_t current_thread = LLThread::currentID();
+    std::lock_guard<std::mutex> lock(mLockMutex);
+
+    iterator it = mLockingThreads.find(current_thread);
+    if (it != mLockingThreads.end())
+    {
+        if (it->second > 1)
+        {
+            it->second--;
+        }
+        else
+        {
+            mLockingThreads.erase(it);
+            mSharedMutex.unlock_shared();
+        }
+    }
+}
+
+void LLSharedMutex::unlockExclusive()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
+    LLThread::id_t current_thread = LLThread::currentID();
+    std::lock_guard<std::mutex> lock(mLockMutex);
+
+    iterator it = mLockingThreads.find(current_thread);
+    if (it != mLockingThreads.end())
+    {
+        if (it->second > 1)
+        {
+            it->second--;
+        }
+        else
+        {
+            mLockingThreads.erase(it);
+            mSharedMutex.unlock();
+        }
+    }
+}
+
+
+//---------------------------------------------------------------------
+//
+// LLCondition
+//
 LLCondition::LLCondition() :
     LLMutex()
 {
 }
 
-
 LLCondition::~LLCondition()
 {
 }
 
-
 void LLCondition::wait()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD
@@ -168,7 +356,10 @@ void LLCondition::broadcast()
 }
 
 
-
+//---------------------------------------------------------------------
+//
+// LLMutexTrylock
+//
 LLMutexTrylock::LLMutexTrylock(LLMutex* mutex)
     : mMutex(mutex),
     mLocked(false)
diff --git a/indra/llcommon/llmutex.h b/indra/llcommon/llmutex.h
index 9a888f1220..6e8cf9643b 100644
--- a/indra/llcommon/llmutex.h
+++ b/indra/llcommon/llmutex.h
@@ -32,6 +32,8 @@
 #include <boost/noncopyable.hpp>
 
 #include "mutex.h"
+#include <shared_mutex>
+#include <unordered_map>
 #include <condition_variable>
 
 //============================================================================
@@ -62,10 +64,79 @@ protected:
     mutable LLThread::id_t  mLockingThread;
 
 #if MUTEX_DEBUG
-    std::unordered_map<LLThread::id_t, BOOL> mIsLocked;
+    std::unordered_map<LLThread::id_t, bool> mIsLocked;
 #endif
 };
 
+//============================================================================
+
+class LL_COMMON_API LLSharedMutex
+{
+public:
+    LLSharedMutex();
+
+    bool isLocked() const;
+    bool isThreadLocked() const;
+    bool isShared() const { return mIsShared; }
+
+    void lockShared();
+    void lockExclusive();
+    template<bool SHARED> void lock();
+
+    bool trylockShared();
+    bool trylockExclusive();
+    template<bool SHARED> bool trylock();
+
+    void unlockShared();
+    void unlockExclusive();
+    template<bool SHARED> void unlock();
+
+private:
+    std::shared_mutex mSharedMutex;
+    mutable std::mutex mLockMutex;
+    std::unordered_map<LLThread::id_t, U32> mLockingThreads;
+    bool mIsShared;
+
+    using iterator = std::unordered_map<LLThread::id_t, U32>::iterator;
+    using const_iterator = std::unordered_map<LLThread::id_t, U32>::const_iterator;
+};
+
+template<>
+inline void LLSharedMutex::lock<true>()
+{
+    lockShared();
+}
+
+template<>
+inline void LLSharedMutex::lock<false>()
+{
+    lockExclusive();
+}
+
+template<>
+inline bool LLSharedMutex::trylock<true>()
+{
+    return trylockShared();
+}
+
+template<>
+inline bool LLSharedMutex::trylock<false>()
+{
+    return trylockExclusive();
+}
+
+template<>
+inline void LLSharedMutex::unlock<true>()
+{
+    unlockShared();
+}
+
+template<>
+inline void LLSharedMutex::unlock<false>()
+{
+    unlockExclusive();
+}
+
 // Actually a condition/mutex pair (since each condition needs to be associated with a mutex).
 class LL_COMMON_API LLCondition : public LLMutex
 {
@@ -81,6 +152,8 @@ protected:
     std::condition_variable mCond;
 };
 
+//============================================================================
+
 class LLMutexLock
 {
 public:
@@ -88,20 +161,48 @@ public:
     {
         mMutex = mutex;
 
-        if(mMutex)
+        if (mMutex)
             mMutex->lock();
     }
+
     ~LLMutexLock()
     {
-        if(mMutex)
+        if (mMutex)
             mMutex->unlock();
     }
+
 private:
     LLMutex* mMutex;
 };
 
 //============================================================================
 
+template<bool SHARED>
+class LLSharedMutexLockTemplate
+{
+public:
+    LLSharedMutexLockTemplate(LLSharedMutex* mutex)
+    : mSharedMutex(mutex)
+    {
+        if (mSharedMutex)
+            mSharedMutex->lock<SHARED>();
+    }
+
+    ~LLSharedMutexLockTemplate()
+    {
+        if (mSharedMutex)
+            mSharedMutex->unlock<SHARED>();
+    }
+
+private:
+    LLSharedMutex* mSharedMutex;
+};
+
+using LLSharedMutexLock = LLSharedMutexLockTemplate<true>;
+using LLExclusiveMutexLock = LLSharedMutexLockTemplate<false>;
+
+//============================================================================
+
 // Scoped locking class similar in function to LLMutexLock but uses
 // the trylock() method to conditionally acquire lock without
 // blocking.  Caller resolves the resulting condition by calling
@@ -127,6 +228,8 @@ private:
     bool        mLocked;
 };
 
+//============================================================================
+
 /**
 * @class LLScopedLock
 * @brief Small class to help lock and unlock mutexes.
diff --git a/indra/llcommon/llnametable.h b/indra/llcommon/llnametable.h
index b3a9df8fc3..0c4cc4c04d 100644
--- a/indra/llcommon/llnametable.h
+++ b/indra/llcommon/llnametable.h
@@ -55,16 +55,16 @@ public:
         mNameMap[tablename] = data;
     }
 
-    BOOL checkName(const std::string& name) const
+    bool checkName(const std::string& name) const
     {
         return checkName(name.c_str());
     }
 
     // "logically const" even though it modifies the global nametable
-    BOOL checkName(const char *name) const
+    bool checkName(const char *name) const
     {
         char *tablename = gStringTable.addString(name);
-        return mNameMap.count(tablename) ? TRUE : FALSE;
+        return mNameMap.find(tablename) != mNameMap.end();
     }
 
     DATA resolveName(const std::string& name) const
diff --git a/indra/llcommon/llpreprocessor.h b/indra/llcommon/llpreprocessor.h
index 83cd6941dc..13beb25558 100644
--- a/indra/llcommon/llpreprocessor.h
+++ b/indra/llcommon/llpreprocessor.h
@@ -122,44 +122,20 @@
 #endif  //  LL_WINDOWS
 
 
-// Deal with VC6 problems
+// Deal with VC++ problems
 #if LL_MSVC
-#pragma warning( 3       : 4701 )   // "local variable used without being initialized"  Treat this as level 3, not level 4.
-#pragma warning( 3       : 4702 )   // "unreachable code"  Treat this as level 3, not level 4.
-#pragma warning( 3       : 4189 )   // "local variable initialized but not referenced"  Treat this as level 3, not level 4.
-//#pragma warning( 3    : 4018 )    // "signed/unsigned mismatch"  Treat this as level 3, not level 4.
-#pragma warning( 3      :  4263 )   // 'function' : member function does not override any base class virtual member function
-#pragma warning( 3      :  4264 )   // "'virtual_function' : no override available for virtual member function from base 'class'; function is hidden"
-#pragma warning( 3       : 4265 )   // "class has virtual functions, but destructor is not virtual"
-#pragma warning( 3      :  4266 )   // 'function' : no override available for virtual member function from base 'type'; function is hidden
-#pragma warning (disable : 4180)    // qualifier applied to function type has no meaning; ignored
-//#pragma warning( disable : 4284 ) // silly MS warning deep inside their <map> include file
-
-#if ADDRESS_SIZE == 64
-// That one is all over the place for x64 builds.
-#pragma warning( disable : 4267 )   // 'var' : conversion from 'size_t' to 'type', possible loss of data)
+#ifndef _CRT_SECURE_NO_WARNINGS
+#define _CRT_SECURE_NO_WARNINGS // disable warnings for methods considered unsafe
+#endif
+#ifndef _WINSOCK_DEPRECATED_NO_WARNINGS
+#define _WINSOCK_DEPRECATED_NO_WARNINGS // disable deprecated WinSock API warnings
 #endif
-
-#pragma warning( disable : 4503 )   // 'decorated name length exceeded, name was truncated'. Does not seem to affect compilation.
-#pragma warning( disable : 4800 )   // 'BOOL' : forcing value to bool 'true' or 'false' (performance warning)
-#pragma warning( disable : 4996 )   // warning: deprecated
-
-// Linker optimization with "extern template" generates these warnings
-#pragma warning( disable : 4231 )   // nonstandard extension used : 'extern' before template explicit instantiation
-#pragma warning( disable : 4506 )   // no definition for inline function
 
 // level 4 warnings that we need to disable:
-#pragma warning (disable : 4100) // unreferenced formal parameter
-#pragma warning (disable : 4127) // conditional expression is constant (e.g. while(1) )
 #pragma warning (disable : 4244) // possible loss of data on conversions
 #pragma warning (disable : 4396) // the inline specifier cannot be used when a friend declaration refers to a specialization of a function template
-#pragma warning (disable : 4512) // assignment operator could not be generated
-#pragma warning (disable : 4706) // assignment within conditional (even if((x = y)) )
-
 #pragma warning (disable : 4251) // member needs to have dll-interface to be used by clients of class
 #pragma warning (disable : 4275) // non dll-interface class used as base for dll-interface class
-#pragma warning (disable : 4018) // '<' : signed/unsigned mismatch
-
 #endif  //  LL_MSVC
 
 #if LL_WINDOWS
diff --git a/indra/llcommon/llpriqueuemap.h b/indra/llcommon/llpriqueuemap.h
index 79934d094b..2bdd39aac2 100644
--- a/indra/llcommon/llpriqueuemap.h
+++ b/indra/llcommon/llpriqueuemap.h
@@ -47,17 +47,17 @@ public:
     {
         if (mPriority > b.mPriority)
         {
-            return TRUE;
+            return true;
         }
         if (mPriority < b.mPriority)
         {
-            return FALSE;
+            return false;
         }
         if (mData > b.mData)
         {
-            return TRUE;
+            return true;
         }
-        return FALSE;
+        return false;
     }
 
     F32 mPriority;
@@ -90,18 +90,18 @@ public:
         mMap.insert(pqm_pair(LLPQMKey<DATA_TYPE>(priority, data), data));
     }
 
-    BOOL pop(DATA_TYPE *datap)
+    bool pop(DATA_TYPE *datap)
     {
         pqm_iter iter;
         iter = mMap.begin();
         if (iter == mMap.end())
         {
-            return FALSE;
+            return false;
         }
         *datap = (*(iter)).second;
         mMap.erase(iter);
 
-        return TRUE;
+        return true;
     }
 
     void reprioritize(const F32 new_priority, DATA_TYPE data)
diff --git a/indra/llcommon/llprocess.cpp b/indra/llcommon/llprocess.cpp
index cf19e3aae9..40ef0ddf9b 100644
--- a/indra/llcommon/llprocess.cpp
+++ b/indra/llcommon/llprocess.cpp
@@ -561,9 +561,9 @@ LLProcess::LLProcess(const LLSDOrParams& params):
     // IQA-490, CHOP-900: On Windows, ask APR to jump through hoops to
     // constrain the set of handles passed to the child process. Before we
     // changed to APR, the Windows implementation of LLProcessLauncher called
-    // CreateProcess(bInheritHandles=FALSE), meaning to pass NO open handles
+    // CreateProcess(bInheritHandles=false), meaning to pass NO open handles
     // to the child process. Now that we support pipes, though, we must allow
-    // apr_proc_create() to pass bInheritHandles=TRUE. But without taking
+    // apr_proc_create() to pass bInheritHandles=true. But without taking
     // special pains, that causes trouble in a number of ways, due to the fact
     // that the viewer is constantly opening and closing files -- most of
     // which CreateProcess() passes to every child process!
diff --git a/indra/llcommon/llprofiler.h b/indra/llcommon/llprofiler.h
index af5e5777bf..722d9afca2 100644
--- a/indra/llcommon/llprofiler.h
+++ b/indra/llcommon/llprofiler.h
@@ -162,7 +162,7 @@ extern thread_local bool gProfilerEnabled;
 
 #define LL_LABEL_OBJECT_GL(type, name, length, label)
 
-#if LL_PROFILER_CONFIGURATION > 1
+#if !LL_DARWIN && LL_PROFILER_CONFIGURATION > 1
 #define LL_PROFILE_ALLOC(ptr, size)             TracyAlloc(ptr, size)
 #define LL_PROFILE_FREE(ptr)                    TracyFree(ptr)
 #else
diff --git a/indra/llcommon/llprofilercategories.h b/indra/llcommon/llprofilercategories.h
index 0de343d020..1c4f0f5624 100644
--- a/indra/llcommon/llprofilercategories.h
+++ b/indra/llcommon/llprofilercategories.h
@@ -67,6 +67,7 @@
 #define LL_PROFILER_CATEGORY_ENABLE_VERTEX      1
 #define LL_PROFILER_CATEGORY_ENABLE_VOLUME      1
 #define LL_PROFILER_CATEGORY_ENABLE_WIN32       1
+#define LL_PROFILER_CATEGORY_ENABLE_GLTF        1
 #define LL_PROFILER_CATEGORY_ENABLE_VOICE       1
 
 #if LL_PROFILER_CATEGORY_ENABLE_APP
@@ -277,12 +278,19 @@
     #define LL_PROFILE_ZONE_SCOPED_CATEGORY_WIN32
 #endif
 
+#if LL_PROFILER_CATEGORY_ENABLE_GLTF
+    #define LL_PROFILE_ZONE_NAMED_CATEGORY_GLTF  LL_PROFILE_ZONE_NAMED
+    #define LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF LL_PROFILE_ZONE_SCOPED
+#else
+    #define LL_PROFILE_ZONE_NAMED_CATEGORY_GLTF(name)
+    #define LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF
+#endif
 #if LL_PROFILER_CATEGORY_ENABLE_VOICE
-#define LL_PROFILE_ZONE_NAMED_CATEGORY_VOICE  LL_PROFILE_ZONE_NAMED
-#define LL_PROFILE_ZONE_SCOPED_CATEGORY_VOICE LL_PROFILE_ZONE_SCOPED
+    #define LL_PROFILE_ZONE_NAMED_CATEGORY_VOICE  LL_PROFILE_ZONE_NAMED
+    #define LL_PROFILE_ZONE_SCOPED_CATEGORY_VOICE LL_PROFILE_ZONE_SCOPED
 #else
-#define LL_PROFILE_ZONE_NAMED_CATEGORY_VOICE(name)
-#define LL_PROFILE_ZONE_SCOPED_CATEGORY_VOICE
+    #define LL_PROFILE_ZONE_NAMED_CATEGORY_VOICE(name)
+    #define LL_PROFILE_ZONE_SCOPED_CATEGORY_VOICE
 #endif
 
 #endif // LL_PROFILER_CATEGORIES_H
diff --git a/indra/llcommon/llqueuedthread.cpp b/indra/llcommon/llqueuedthread.cpp
index aaf13ac796..7d77f6f6a9 100644
--- a/indra/llcommon/llqueuedthread.cpp
+++ b/indra/llcommon/llqueuedthread.cpp
@@ -37,9 +37,9 @@
 // MAIN THREAD
 LLQueuedThread::LLQueuedThread(const std::string& name, bool threaded, bool should_pause) :
     LLThread(name),
-    mIdleThread(TRUE),
+    mIdleThread(true),
     mNextHandle(0),
-    mStarted(FALSE),
+    mStarted(false),
     mThreaded(threaded),
     mRequestQueue(name, 1024 * 1024)
 {
@@ -131,7 +131,7 @@ size_t LLQueuedThread::update(F32 max_time_ms)
         if (!mThreaded)
         {
             startThread();
-            mStarted = TRUE;
+            mStarted = true;
         }
     }
     return updateQueue(max_time_ms);
@@ -149,9 +149,9 @@ size_t LLQueuedThread::updateQueue(F32 max_time_ms)
             mRequestQueue.post([=]()
                 {
                     LL_PROFILE_ZONE_NAMED_CATEGORY_THREAD("qt - update");
-                    mIdleThread = FALSE;
+                    mIdleThread = false;
                     threadedUpdate();
-                    mIdleThread = TRUE;
+                    mIdleThread = true;
                 }
             );
         }
@@ -210,7 +210,7 @@ void LLQueuedThread::waitOnPending()
 // MAIN thread
 void LLQueuedThread::printQueueStats()
 {
-    U32 size = mRequestQueue.size();
+    auto size = mRequestQueue.size();
     if (size > 0)
     {
         LL_INFOS() << llformat("Pending Requests:%d ", mRequestQueue.size()) << LL_ENDL;
@@ -392,7 +392,7 @@ void LLQueuedThread::processRequest(LLQueuedThread::QueuedRequest* req)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_THREAD;
 
-    mIdleThread = FALSE;
+    mIdleThread = false;
     //threadedUpdate();
 
     // Get next request from pool
@@ -494,7 +494,7 @@ void LLQueuedThread::processRequest(LLQueuedThread::QueuedRequest* req)
         }
     }
 
-    mIdleThread = TRUE;
+    mIdleThread = true;
 }
 
 // virtual
@@ -513,7 +513,7 @@ void LLQueuedThread::run()
     // call checPause() immediately so we don't try to do anything before the class is fully constructed
     checkPause();
     startThread();
-    mStarted = TRUE;
+    mStarted = true;
 
 
     /*while (1)
@@ -522,7 +522,7 @@ void LLQueuedThread::run()
         // this will block on the condition until runCondition() returns true, the thread is unpaused, or the thread leaves the RUNNING state.
         checkPause();
 
-        mIdleThread = FALSE;
+        mIdleThread = false;
 
         threadedUpdate();
 
@@ -531,7 +531,7 @@ void LLQueuedThread::run()
         if (pending_work == 0)
         {
             //LL_PROFILE_ZONE_NAMED("LLQueuedThread - sleep");
-            mIdleThread = TRUE;
+            mIdleThread = true;
             //ms_sleep(1);
         }
         //LLThread::yield(); // thread should yield after each request
diff --git a/indra/llcommon/llqueuedthread.h b/indra/llcommon/llqueuedthread.h
index 339299f081..02d3a96fcc 100644
--- a/indra/llcommon/llqueuedthread.h
+++ b/indra/llcommon/llqueuedthread.h
@@ -144,7 +144,7 @@ public:
     void printQueueStats();
 
     virtual size_t getPending();
-    bool getThreaded() { return mThreaded ? true : false; }
+    bool getThreaded() { return mThreaded; }
 
     // Request accessors
     status_t getRequestStatus(handle_t handle);
@@ -159,8 +159,8 @@ public:
     bool check();
 
 protected:
-    BOOL mThreaded;  // if false, run on main thread and do updates during update()
-    BOOL mStarted;  // required when mThreaded is false to call startThread() from update()
+    bool mThreaded;  // if false, run on main thread and do updates during update()
+    bool mStarted;  // required when mThreaded is false to call startThread() from update()
     LLAtomicBool mIdleThread; // request queue is empty (or we are quitting) and the thread is idle
 
     //typedef std::set<QueuedRequest*, queued_request_less> request_queue_t;
diff --git a/indra/llcommon/llrefcount.h b/indra/llcommon/llrefcount.h
index 33c9e956b1..3a253d8fa6 100644
--- a/indra/llcommon/llrefcount.h
+++ b/indra/llcommon/llrefcount.h
@@ -89,13 +89,6 @@ private:
 
 class LL_COMMON_API LLThreadSafeRefCount
 {
-public:
-    static void initThreadSafeRefCount(); // creates sMutex
-    static void cleanupThreadSafeRefCount(); // destroys sMutex
-
-private:
-    static LLMutex* sMutex;
-
 protected:
     virtual ~LLThreadSafeRefCount(); // use unref()
 
diff --git a/indra/llcommon/llregistry.h b/indra/llcommon/llregistry.h
index 55dabd57a2..35335e1213 100644
--- a/indra/llcommon/llregistry.h
+++ b/indra/llcommon/llregistry.h
@@ -60,7 +60,7 @@ public:
 
         bool add(ref_const_key_t key, ref_const_value_t value)
         {
-            if (mMap.insert(std::make_pair(key, value)).second == false)
+            if (!mMap.insert(std::make_pair(key, value)).second)
             {
                 LL_WARNS() << "Tried to register " << key << " but it was already registered!" << LL_ENDL;
                 return false;
diff --git a/indra/llcommon/llsdjson.cpp b/indra/llcommon/llsdjson.cpp
index bb2b8681f7..e95d2e6c1c 100644
--- a/indra/llcommon/llsdjson.cpp
+++ b/indra/llcommon/llsdjson.cpp
@@ -31,46 +31,56 @@
 
 #include "llsdjson.h"
 
+#include "llsdutil.h"
 #include "llerror.h"
 #include "../llmath/llmath.h"
 
+#if LL_WINDOWS
+#pragma warning (push)
+#pragma warning (disable : 4702) // compiler thinks unreachable code
+#endif
+#include <boost/json/src.hpp>
+#if LL_WINDOWS
+#pragma warning (pop)
+#endif
+
+
+
 //=========================================================================
-LLSD LlsdFromJson(const Json::Value &val)
+LLSD LlsdFromJson(const boost::json::value& val)
 {
     LLSD result;
 
-    switch (val.type())
+    switch (val.kind())
     {
     default:
-    case Json::nullValue:
-        break;
-    case Json::intValue:
-        result = LLSD(static_cast<LLSD::Integer>(val.asInt()));
+    case boost::json::kind::null:
         break;
-    case Json::uintValue:
-        result = LLSD(static_cast<LLSD::Integer>(val.asUInt()));
+    case boost::json::kind::int64:
+    case boost::json::kind::uint64:
+        result = LLSD(val.to_number<int64_t>());
         break;
-    case Json::realValue:
-        result = LLSD(static_cast<LLSD::Real>(val.asDouble()));
+    case boost::json::kind::double_:
+        result = LLSD(val.to_number<double>());
         break;
-    case Json::stringValue:
-        result = LLSD(static_cast<LLSD::String>(val.asString()));
+    case boost::json::kind::string:
+        result = LLSD(boost::json::value_to<std::string>(val));
         break;
-    case Json::booleanValue:
-        result = LLSD(static_cast<LLSD::Boolean>(val.asBool()));
+    case boost::json::kind::bool_:
+        result = LLSD(val.as_bool());
         break;
-    case Json::arrayValue:
+    case boost::json::kind::array:
         result = LLSD::emptyArray();
-        for (Json::ValueConstIterator it = val.begin(); it != val.end(); ++it)
+        for (const auto &element : val.as_array())
         {
-            result.append(LlsdFromJson((*it)));
+            result.append(LlsdFromJson(element));
         }
         break;
-    case Json::objectValue:
+    case boost::json::kind::object:
         result = LLSD::emptyMap();
-        for (Json::ValueConstIterator it = val.begin(); it != val.end(); ++it)
+        for (const auto& element : val.as_object())
         {
-            result[it.memberName()] = LlsdFromJson((*it));
+            result[element.key()] = LlsdFromJson(element.value());
         }
         break;
     }
@@ -78,44 +88,48 @@ LLSD LlsdFromJson(const Json::Value &val)
 }
 
 //=========================================================================
-Json::Value LlsdToJson(const LLSD &val)
+boost::json::value LlsdToJson(const LLSD &val)
 {
-    Json::Value result;
+    boost::json::value result;
 
     switch (val.type())
     {
     case LLSD::TypeUndefined:
-        result = Json::Value::null;
+        result = nullptr;
         break;
     case LLSD::TypeBoolean:
-        result = Json::Value(static_cast<bool>(val.asBoolean()));
+        result = val.asBoolean();
         break;
     case LLSD::TypeInteger:
-        result = Json::Value(static_cast<int>(val.asInteger()));
+        result = val.asInteger();
         break;
     case LLSD::TypeReal:
-        result = Json::Value(static_cast<double>(val.asReal()));
+        result = val.asReal();
         break;
     case LLSD::TypeURI:
     case LLSD::TypeDate:
     case LLSD::TypeUUID:
     case LLSD::TypeString:
-        result = Json::Value(val.asString());
+        result = val.asString();
         break;
     case LLSD::TypeMap:
-        result = Json::Value(Json::objectValue);
-        for (LLSD::map_const_iterator it = val.beginMap(); it != val.endMap(); ++it)
+    {
+        boost::json::object& obj = result.emplace_object();
+        for (const auto& llsd_dat : llsd::inMap(val))
         {
-            result[it->first] = LlsdToJson(it->second);
+            obj[llsd_dat.first] = LlsdToJson(llsd_dat.second);
         }
         break;
+    }
     case LLSD::TypeArray:
-        result = Json::Value(Json::arrayValue);
-        for (LLSD::array_const_iterator it = val.beginArray(); it != val.endArray(); ++it)
+    {
+        boost::json::array& json_array = result.emplace_array();
+        for (const auto& llsd_dat : llsd::inArray(val))
         {
-            result.append(LlsdToJson(*it));
+            json_array.push_back(LlsdToJson(llsd_dat));
         }
         break;
+    }
     case LLSD::TypeBinary:
     default:
         LL_ERRS("LlsdToJson") << "Unsupported conversion to JSON from LLSD type (" << val.type() << ")." << LL_ENDL;
diff --git a/indra/llcommon/llsdjson.h b/indra/llcommon/llsdjson.h
index 79bf2c56fa..415bbf4821 100644
--- a/indra/llcommon/llsdjson.h
+++ b/indra/llcommon/llsdjson.h
@@ -34,7 +34,7 @@
 #include "stdtypes.h"
 
 #include "llsd.h"
-#include "json/value.h"
+#include <boost/json.hpp>
 
 /// Convert a parsed JSON structure into LLSD maintaining member names and
 /// array indexes.
@@ -53,7 +53,7 @@
 ///
 /// For maps and arrays child entries will be converted and added to the structure.
 /// Order is preserved for an array but not for objects.
-LLSD LlsdFromJson(const Json::Value &val);
+LLSD LlsdFromJson(const boost::json::value &val);
 
 /// Convert an LLSD object into Parsed JSON object maintaining member names and
 /// array indexs.
@@ -72,6 +72,6 @@ LLSD LlsdFromJson(const Json::Value &val);
 /// TypeMap       | object
 /// TypeArray     | array
 /// TypeBinary    | unsupported
-Json::Value LlsdToJson(const LLSD &val);
+boost::json::value LlsdToJson(const LLSD &val);
 
 #endif // LL_LLSDJSON_H
diff --git a/indra/llcommon/llsdserialize.cpp b/indra/llcommon/llsdserialize.cpp
index d5af31a28e..15002580c9 100644
--- a/indra/llcommon/llsdserialize.cpp
+++ b/indra/llcommon/llsdserialize.cpp
@@ -389,7 +389,7 @@ LLSDParser::~LLSDParser()
 
 S32 LLSDParser::parse(std::istream& istr, LLSD& data, llssize max_bytes, S32 max_depth)
 {
-    mCheckLimits = (LLSDSerialize::SIZE_UNLIMITED == max_bytes) ? false : true;
+    mCheckLimits = LLSDSerialize::SIZE_UNLIMITED != max_bytes;
     mMaxBytesLeft = max_bytes;
     return doParse(istr, data, max_depth);
 }
@@ -1546,7 +1546,7 @@ S32 LLSDBinaryFormatter::format_impl(const LLSD& data, std::ostream& ostr,
     case LLSD::TypeMap:
     {
         ostr.put('{');
-        U32 size_nbo = htonl(data.size());
+        U32 size_nbo = htonl(static_cast<u_long>(data.size()));
         ostr.write((const char*)(&size_nbo), sizeof(U32));
         LLSD::map_const_iterator iter = data.beginMap();
         LLSD::map_const_iterator end = data.endMap();
@@ -1563,7 +1563,7 @@ S32 LLSDBinaryFormatter::format_impl(const LLSD& data, std::ostream& ostr,
     case LLSD::TypeArray:
     {
         ostr.put('[');
-        U32 size_nbo = htonl(data.size());
+        U32 size_nbo = htonl(static_cast<u_long>(data.size()));
         ostr.write((const char*)(&size_nbo), sizeof(U32));
         LLSD::array_const_iterator iter = data.beginArray();
         LLSD::array_const_iterator end = data.endArray();
@@ -1630,7 +1630,7 @@ S32 LLSDBinaryFormatter::format_impl(const LLSD& data, std::ostream& ostr,
     {
         ostr.put('b');
         const std::vector<U8>& buffer = data.asBinary();
-        U32 size_nbo = htonl(buffer.size());
+        U32 size_nbo = htonl(static_cast<u_long>(buffer.size()));
         ostr.write((const char*)(&size_nbo), sizeof(U32));
         if(buffer.size()) ostr.write((const char*)&buffer[0], buffer.size());
         break;
@@ -1648,7 +1648,7 @@ void LLSDBinaryFormatter::formatString(
     const std::string& string,
     std::ostream& ostr) const
 {
-    U32 size_nbo = htonl(string.size());
+    U32 size_nbo = htonl(static_cast<u_long>(string.size()));
     ostr.write((const char*)(&size_nbo), sizeof(U32));
     ostr.write(string.c_str(), string.size());
 }
diff --git a/indra/llcommon/llsdutil.cpp b/indra/llcommon/llsdutil.cpp
index 09bfb51cc3..2d3d7d8b73 100644
--- a/indra/llcommon/llsdutil.cpp
+++ b/indra/llcommon/llsdutil.cpp
@@ -209,7 +209,7 @@ std::string ll_stream_notation_sd(const LLSD& sd)
 //are not of the same type, false is returned or if the LLSDs are not
 //of the same value.  Ordering of arrays matters
 //Otherwise, returns true
-BOOL compare_llsd_with_template(
+bool compare_llsd_with_template(
     const LLSD& llsd_to_test,
     const LLSD& template_llsd,
     LLSD& resultant_llsd)
@@ -221,12 +221,12 @@ BOOL compare_llsd_with_template(
         template_llsd.isDefined() )
     {
         resultant_llsd = template_llsd;
-        return TRUE;
+        return true;
     }
     else if ( llsd_to_test.type() != template_llsd.type() )
     {
         resultant_llsd = LLSD();
-        return FALSE;
+        return false;
     }
 
     if ( llsd_to_test.isArray() )
@@ -255,7 +255,7 @@ BOOL compare_llsd_with_template(
                      data) )
             {
                 resultant_llsd = LLSD();
-                return FALSE;
+                return false;
             }
             else
             {
@@ -298,7 +298,7 @@ BOOL compare_llsd_with_template(
                          value) )
                 {
                     resultant_llsd = LLSD();
-                    return FALSE;
+                    return false;
                 }
                 else
                 {
@@ -321,7 +321,7 @@ BOOL compare_llsd_with_template(
     }
 
 
-    return TRUE;
+    return true;
 }
 
 // filter_llsd_with_template() is a direct clone (copy-n-paste) of
diff --git a/indra/llcommon/llsdutil.h b/indra/llcommon/llsdutil.h
index aa497c53c7..38bbe19ddd 100644
--- a/indra/llcommon/llsdutil.h
+++ b/indra/llcommon/llsdutil.h
@@ -72,7 +72,7 @@ LL_COMMON_API std::string ll_stream_notation_sd(const LLSD& sd);
 //Returns false if the test is of same type but values differ in type
 //Otherwise, returns true
 
-LL_COMMON_API BOOL compare_llsd_with_template(
+LL_COMMON_API bool compare_llsd_with_template(
     const LLSD& llsd_to_test,
     const LLSD& template_llsd,
     LLSD& resultant_llsd);
diff --git a/indra/llcommon/llsingleton.h b/indra/llcommon/llsingleton.h
index 91c05bd5ed..7c6be25309 100644
--- a/indra/llcommon/llsingleton.h
+++ b/indra/llcommon/llsingleton.h
@@ -36,6 +36,10 @@
 #include "llthread.h"               // on_main_thread()
 #include "llmainthreadtask.h"
 
+#ifdef LL_WINDOWS
+#pragma warning( disable : 4506 )   // no definition for inline function
+#endif
+
 class LLSingletonBase: private boost::noncopyable
 {
 public:
@@ -528,6 +532,7 @@ public:
                          classname<DERIVED_TYPE>(),
                          " -- creating new instance"});
                 // fall through
+                [[fallthrough]];
             case UNINITIALIZED:
             case QUEUED:
                 // QUEUED means some secondary thread has already requested an
@@ -807,17 +812,6 @@ private:                                                                \
     DERIVED_CLASS(__VA_ARGS__)
 
 /**
- * A slight variance from the above, but includes the "override" keyword
- */
-#define LLSINGLETON_C11(DERIVED_CLASS)                                  \
-private:                                                                \
-    /* implement LLSingleton pure virtual method whose sole purpose */  \
-    /* is to remind people to use this macro */                         \
-    virtual void you_must_use_LLSINGLETON_macro() override {}           \
-    friend class LLSingleton<DERIVED_CLASS>;                            \
-    DERIVED_CLASS()
-
-/**
  * Use LLSINGLETON_EMPTY_CTOR(Foo); at the start of an LLSingleton<Foo>
  * subclass body when the constructor is trivial:
  *
@@ -835,10 +829,6 @@ private:                                                                \
     /* LLSINGLETON() is carefully implemented to permit exactly this */ \
     LLSINGLETON(DERIVED_CLASS) {}
 
-#define LLSINGLETON_EMPTY_CTOR_C11(DERIVED_CLASS)                       \
-    /* LLSINGLETON() is carefully implemented to permit exactly this */ \
-    LLSINGLETON_C11(DERIVED_CLASS) {}
-
 // Relatively unsafe singleton implementation that is much faster
 // and simpler than LLSingleton, but has no dependency tracking
 // or inherent thread safety and requires manual invocation of
diff --git a/indra/llcommon/llstacktrace.cpp b/indra/llcommon/llstacktrace.cpp
index 1fe7f0f25f..bda3579f60 100644
--- a/indra/llcommon/llstacktrace.cpp
+++ b/indra/llcommon/llstacktrace.cpp
@@ -53,8 +53,8 @@ bool ll_get_stack_trace(std::vector<std::string>& lines)
     const S32 MAX_STACK_DEPTH = 32;
     const S32 STRING_NAME_LENGTH = 200;
     const S32 FRAME_SKIP = 2;
-    static BOOL symbolsLoaded = false;
-    static BOOL firstCall = true;
+    static bool symbolsLoaded = false;
+    static bool firstCall = true;
 
     HANDLE hProc = GetCurrentProcess();
 
@@ -92,7 +92,7 @@ bool ll_get_stack_trace(std::vector<std::string>& lines)
         for(S32 i=0; i < depth; i++)
         {
             std::stringstream stack_line;
-            BOOL ret;
+            bool ret;
 
             DWORD64 addr = (DWORD64)frames[i];
             ret = SymGetSymFromAddr64(hProc, addr, 0, pSym);
@@ -134,7 +134,7 @@ void ll_get_stack_trace_internal(std::vector<std::string>& lines)
     const S32 STRING_NAME_LENGTH = 256;
 
     HANDLE process = GetCurrentProcess();
-    SymInitialize( process, NULL, TRUE );
+    SymInitialize( process, NULL, true );
 
     void *stack[MAX_STACK_DEPTH];
 
diff --git a/indra/llcommon/llstl.h b/indra/llcommon/llstl.h
index 3a6efd7d34..1b52d94258 100644
--- a/indra/llcommon/llstl.h
+++ b/indra/llcommon/llstl.h
@@ -326,7 +326,7 @@ inline bool vector_replace_with_last(std::vector<T>& invec, const T& val)
 template <typename T>
 inline T* vector_append(std::vector<T>& invec, S32 N)
 {
-    U32 sz = invec.size();
+    auto sz = invec.size();
     invec.resize(sz+N);
     return &(invec[sz]);
 }
@@ -532,7 +532,7 @@ bool before(const std::type_info* lhs, const std::type_info* rhs)
     return strcmp(lhs->name(), rhs->name()) < 0;
 #else  // not Linux, or gcc 4.4+
     // Just use before(), as we normally would
-    return lhs->before(*rhs) ? true : false;
+    return lhs->before(*rhs);
 #endif
 }
 
diff --git a/indra/llcommon/llstreamqueue.h b/indra/llcommon/llstreamqueue.h
index a09bf4cb4b..01689457dd 100644
--- a/indra/llcommon/llstreamqueue.h
+++ b/indra/llcommon/llstreamqueue.h
@@ -216,7 +216,7 @@ std::streamsize LLGenericStreamQueue<Ch>::skip(std::streamsize n)
 {
     typename BufferList::iterator bli(mBuffer.begin()), blend(mBuffer.end());
     std::streamsize toskip(n), skipped(0);
-    while (bli != blend && toskip >= bli->length())
+    while (bli != blend && (size_t)toskip >= bli->length())
     {
         std::streamsize chunk(bli->length());
         typename BufferList::iterator zap(bli++);
diff --git a/indra/llcommon/llstring.cpp b/indra/llcommon/llstring.cpp
index 6512bbc392..514d73b24b 100644
--- a/indra/llcommon/llstring.cpp
+++ b/indra/llcommon/llstring.cpp
@@ -308,10 +308,10 @@ S32 wstring_utf16_length(const LLWString &wstr, const S32 woffset, const S32 wle
 // Given a wstring and an offset in it, returns the length as wstring (i.e.,
 // number of llwchars) of the longest substring that starts at the offset
 // and whose equivalent utf-16 string does not exceeds the given utf16_length.
-S32 wstring_wstring_length_from_utf16_length(const LLWString & wstr, const S32 woffset, const S32 utf16_length, BOOL *unaligned)
+S32 wstring_wstring_length_from_utf16_length(const LLWString & wstr, const S32 woffset, const S32 utf16_length, bool *unaligned)
 {
     const auto end = wstr.length();
-    BOOL u = FALSE;
+    bool u{ false };
     S32 n = woffset + utf16_length;
     S32 i = woffset;
     while (i < end)
@@ -758,7 +758,7 @@ std::string utf8str_showBytesUTF8(const std::string& utf8str)
 }
 
 // Search for any emoji symbol, return true if found
-bool wstring_has_emoji(const LLWString& wstr)
+bool wstring_has_emoji(LLWStringView wstr)
 {
     for (const llwchar& wch : wstr)
     {
@@ -809,7 +809,7 @@ std::string ll_convert_wide_to_string(const wchar_t* in, size_t len_in, unsigned
             code_page,
             0,
             in,
-            len_in,
+            static_cast<int>(len_in),
             NULL,
             0,
             0,
@@ -824,7 +824,7 @@ std::string ll_convert_wide_to_string(const wchar_t* in, size_t len_in, unsigned
                 code_page,
                 0,
                 in,
-                len_in,
+                static_cast<int>(len_in),
                 pout,
                 len_out,
                 0,
@@ -851,8 +851,8 @@ std::wstring ll_convert_string_to_wide(const char* in, size_t len, unsigned int
     std::vector<wchar_t> w_out(len + 1);
 
     memset(&w_out[0], 0, w_out.size());
-    int real_output_str_len = MultiByteToWideChar(code_page, 0, in, len,
-                                                  &w_out[0], w_out.size() - 1);
+    int real_output_str_len = MultiByteToWideChar(code_page, 0, in, static_cast<int>(len),
+                                                  &w_out[0], static_cast<int>(w_out.size() - 1));
 
     //looks like MultiByteToWideChar didn't add null terminator to converted string, see EXT-4858.
     w_out[real_output_str_len] = 0;
@@ -938,12 +938,12 @@ std::wstring windows_message<std::wstring>(DWORD error)
     return out.str();
 }
 
-boost::optional<std::wstring> llstring_getoptenv(const std::string& key)
+std::optional<std::wstring> llstring_getoptenv(const std::string& key)
 {
     auto wkey = ll_convert_string_to_wide(key);
     // Take a wild guess as to how big the buffer should be.
     std::vector<wchar_t> buffer(1024);
-    auto n = GetEnvironmentVariableW(wkey.c_str(), &buffer[0], buffer.size());
+    auto n = GetEnvironmentVariableW(wkey.c_str(), &buffer[0], static_cast<DWORD>(buffer.size()));
     // If our initial guess was too short, n will indicate the size (in
     // wchar_t's) that buffer should have been, including the terminating nul.
     if (n > (buffer.size() - 1))
@@ -951,13 +951,13 @@ boost::optional<std::wstring> llstring_getoptenv(const std::string& key)
         // make it big enough
         buffer.resize(n);
         // and try again
-        n = GetEnvironmentVariableW(wkey.c_str(), &buffer[0], buffer.size());
+        n = GetEnvironmentVariableW(wkey.c_str(), &buffer[0], static_cast<DWORD>(buffer.size()));
     }
     // did that (ultimately) succeed?
     if (n)
     {
-        // great, return populated boost::optional
-        return boost::optional<std::wstring>(&buffer[0]);
+        // great, return populated std::optional
+        return std::make_optional<std::wstring>(&buffer[0]);
     }
 
     // not successful
@@ -968,23 +968,23 @@ boost::optional<std::wstring> llstring_getoptenv(const std::string& key)
         LL_WARNS() << "GetEnvironmentVariableW('" << key << "') failed: "
                    << windows_message<std::string>(last_error) << LL_ENDL;
     }
-    // return empty boost::optional
+    // return empty std::optional
     return {};
 }
 
 #else  // ! LL_WINDOWS
 
-boost::optional<std::string> llstring_getoptenv(const std::string& key)
+std::optional<std::string> llstring_getoptenv(const std::string& key)
 {
     auto found = getenv(key.c_str());
     if (found)
     {
-        // return populated boost::optional
-        return boost::optional<std::string>(found);
+        // return populated std::optional
+        return std::make_optional<std::string>(found);
     }
     else
     {
-        // return empty boost::optional
+        // return empty std::optional
         return {};
     }
 }
@@ -1017,7 +1017,7 @@ bool LLStringOps::isEmoji(llwchar a)
     // These are indeed "genuine" emojis, we *do want* rendered as such. HB
     return a >= 0x1f000 && a < 0x20000;
 #endif
-}
+    }
 
 S32 LLStringOps::collate(const llwchar* a, const llwchar* b)
 {
@@ -1552,7 +1552,7 @@ S32 LLStringUtil::format(std::string& s, const format_map_t& substitutions)
             if (iter != substitutions.end())
             {
                 S32 secFromEpoch = 0;
-                BOOL r = LLStringUtil::convertToS32(iter->second, secFromEpoch);
+                bool r = LLStringUtil::convertToS32(iter->second, secFromEpoch);
                 if (r)
                 {
                     found_replacement = formatDatetime(replacement, tokens[0], param, secFromEpoch);
diff --git a/indra/llcommon/llstring.h b/indra/llcommon/llstring.h
index 6503da2e77..123f4184b5 100644
--- a/indra/llcommon/llstring.h
+++ b/indra/llcommon/llstring.h
@@ -28,8 +28,9 @@
 #define LL_LLSTRING_H
 
 #include <boost/call_traits.hpp>
-#include <boost/optional/optional.hpp>
+#include <optional>
 #include <string>
+#include <string_view>
 #include <cstdio>
 #include <cwchar>                   // std::wcslen()
 //#include <locale>
@@ -317,7 +318,7 @@ public:
     static void toLower(string_type& string);
 
     // True if this is the head of s.
-    static BOOL isHead( const string_type& string, const T* s );
+    static bool isHead( const string_type& string, const T* s );
 
     /**
      * @brief Returns true if string starts with substr
@@ -348,7 +349,7 @@ public:
      * (key is always UTF-8)
      * detect absence by (! return value)
      */
-    static boost::optional<string_type> getoptenv(const std::string& key);
+    static std::optional<string_type> getoptenv(const std::string& key);
 
     static void addCRLF(string_type& string);
     static void removeCRLF(string_type& string);
@@ -361,7 +362,7 @@ public:
     static string_type capitalize(const string_type& str);
     static void capitalize(string_type& str);
 
-    static BOOL containsNonprintable(const string_type& string);
+    static bool containsNonprintable(const string_type& string);
     static void stripNonprintable(string_type& string);
 
     /**
@@ -387,15 +388,15 @@ public:
     static void _makeASCII(string_type& string);
 
     // Conversion to other data types
-    static BOOL convertToBOOL(const string_type& string, BOOL& value);
-    static BOOL convertToU8(const string_type& string, U8& value);
-    static BOOL convertToS8(const string_type& string, S8& value);
-    static BOOL convertToS16(const string_type& string, S16& value);
-    static BOOL convertToU16(const string_type& string, U16& value);
-    static BOOL convertToU32(const string_type& string, U32& value);
-    static BOOL convertToS32(const string_type& string, S32& value);
-    static BOOL convertToF32(const string_type& string, F32& value);
-    static BOOL convertToF64(const string_type& string, F64& value);
+    static bool convertToBOOL(const string_type& string, bool& value);
+    static bool convertToU8(const string_type& string, U8& value);
+    static bool convertToS8(const string_type& string, S8& value);
+    static bool convertToS16(const string_type& string, S16& value);
+    static bool convertToU16(const string_type& string, U16& value);
+    static bool convertToU32(const string_type& string, U32& value);
+    static bool convertToS32(const string_type& string, S32& value);
+    static bool convertToF32(const string_type& string, F32& value);
+    static bool convertToF64(const string_type& string, F64& value);
 
     /////////////////////////////////////////////////////////////////////////////////////////
     // Utility functions for working with char*'s and strings
@@ -420,7 +421,7 @@ public:
     static S32      compareDictInsensitive(const string_type& a, const string_type& b);
 
     // Puts compareDict() in a form appropriate for LL container classes to use for sorting.
-    static BOOL     precedesDict( const string_type& a, const string_type& b );
+    static bool     precedesDict( const string_type& a, const string_type& b );
 
     // A replacement for strncpy.
     // If the dst buffer is dst_size bytes long or more, ensures that dst is null terminated and holds
@@ -447,6 +448,7 @@ template<class T> std::string LLStringUtilBase<T>::sLocale;
 typedef LLStringUtilBase<char> LLStringUtil;
 typedef LLStringUtilBase<llwchar> LLWStringUtil;
 typedef std::basic_string<llwchar> LLWString;
+typedef std::basic_string_view<llwchar> LLWStringView;
 
 //@ Use this where we want to disallow input in the form of "foo"
 //  This is used to catch places where english text is embedded in the code
@@ -464,7 +466,7 @@ struct LLDictionaryLess
 public:
     bool operator()(const std::string& a, const std::string& b) const
     {
-        return (LLStringUtil::precedesDict(a, b) ? true : false);
+        return (LLStringUtil::precedesDict(a, b));
     }
 };
 
@@ -694,7 +696,7 @@ LL_COMMON_API S32 utf16str_wstring_length(const llutf16string &utf16str, S32 len
 LL_COMMON_API S32 wstring_utf16_length(const LLWString & wstr, S32 woffset, S32 wlen);
 
 // Length in wstring (i.e., llwchar count) of a part of a wstring specified by utf16 length (i.e., utf16 units.)
-LL_COMMON_API S32 wstring_wstring_length_from_utf16_length(const LLWString & wstr, S32 woffset, S32 utf16_length, BOOL *unaligned = NULL);
+LL_COMMON_API S32 wstring_wstring_length_from_utf16_length(const LLWString & wstr, S32 woffset, S32 utf16_length, bool *unaligned = nullptr);
 
 /**
  * @brief Properly truncate a utf8 string to a maximum byte count.
@@ -748,7 +750,7 @@ LL_COMMON_API llwchar utf8str_to_wchar(const std::string& utf8str, size_t offset
 
 LL_COMMON_API std::string utf8str_showBytesUTF8(const std::string& utf8str);
 
-LL_COMMON_API bool wstring_has_emoji(const LLWString& wstr);
+LL_COMMON_API bool wstring_has_emoji(LLWStringView wstr);
 
 LL_COMMON_API bool wstring_remove_emojis(LLWString& wstr);
 
@@ -835,11 +837,11 @@ STRING windows_message() { return windows_message<STRING>(GetLastError()); }
 
 //@}
 
-LL_COMMON_API boost::optional<std::wstring> llstring_getoptenv(const std::string& key);
+LL_COMMON_API std::optional<std::wstring> llstring_getoptenv(const std::string& key);
 
 #else // ! LL_WINDOWS
 
-LL_COMMON_API boost::optional<std::string>  llstring_getoptenv(const std::string& key);
+LL_COMMON_API std::optional<std::string>  llstring_getoptenv(const std::string& key);
 
 #endif // ! LL_WINDOWS
 
@@ -1378,7 +1380,7 @@ S32 LLStringUtilBase<T>::compareDictInsensitive(const string_type& astr, const s
 // Puts compareDict() in a form appropriate for LL container classes to use for sorting.
 // static
 template<class T>
-BOOL LLStringUtilBase<T>::precedesDict( const string_type& a, const string_type& b )
+bool LLStringUtilBase<T>::precedesDict( const string_type& a, const string_type& b )
 {
     if( a.size() && b.size() )
     {
@@ -1634,15 +1636,15 @@ void LLStringUtilBase<T>::capitalize(string_type& str)
 
 //static
 template<class T>
-BOOL LLStringUtilBase<T>::containsNonprintable(const string_type& string)
+bool LLStringUtilBase<T>::containsNonprintable(const string_type& string)
 {
     const char MIN = 32;
-    BOOL rv = FALSE;
+    bool rv = false;
     for (size_type i = 0; i < string.size(); i++)
     {
         if(string[i] < MIN)
         {
-            rv = TRUE;
+            rv = true;
             break;
         }
     }
@@ -1771,12 +1773,12 @@ void LLStringUtilBase<T>::copyInto(string_type& dst, const string_type& src, siz
 // True if this is the head of s.
 //static
 template<class T>
-BOOL LLStringUtilBase<T>::isHead( const string_type& string, const T* s )
+bool LLStringUtilBase<T>::isHead( const string_type& string, const T* s )
 {
     if( string.empty() )
     {
         // Early exit
-        return FALSE;
+        return false;
     }
     else
     {
@@ -1812,17 +1814,17 @@ bool LLStringUtilBase<T>::endsWith(
 
 // static
 template<class T>
-auto LLStringUtilBase<T>::getoptenv(const std::string& key) -> boost::optional<string_type>
+auto LLStringUtilBase<T>::getoptenv(const std::string& key) -> std::optional<string_type>
 {
     auto found(llstring_getoptenv(key));
     if (found)
     {
-        // return populated boost::optional
+        // return populated std::optional
         return { ll_convert<string_type>(*found) };
     }
     else
     {
-        // empty boost::optional
+        // empty std::optional
         return {};
     }
 }
@@ -1843,11 +1845,11 @@ auto LLStringUtilBase<T>::getenv(const std::string& key, const string_type& dflt
 }
 
 template<class T>
-BOOL LLStringUtilBase<T>::convertToBOOL(const string_type& string, BOOL& value)
+bool LLStringUtilBase<T>::convertToBOOL(const string_type& string, bool& value)
 {
     if( string.empty() )
     {
-        return FALSE;
+        return false;
     }
 
     string_type temp( string );
@@ -1860,8 +1862,8 @@ BOOL LLStringUtilBase<T>::convertToBOOL(const string_type& string, BOOL& value)
         (temp == "true") ||
         (temp == "True") )
     {
-        value = TRUE;
-        return TRUE;
+        value = true;
+        return true;
     }
     else
     if(
@@ -1872,71 +1874,71 @@ BOOL LLStringUtilBase<T>::convertToBOOL(const string_type& string, BOOL& value)
         (temp == "false") ||
         (temp == "False") )
     {
-        value = FALSE;
-        return TRUE;
+        value = false;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 template<class T>
-BOOL LLStringUtilBase<T>::convertToU8(const string_type& string, U8& value)
+bool LLStringUtilBase<T>::convertToU8(const string_type& string, U8& value)
 {
     S32 value32 = 0;
-    BOOL success = convertToS32(string, value32);
+    bool success = convertToS32(string, value32);
     if( success && (U8_MIN <= value32) && (value32 <= U8_MAX) )
     {
         value = (U8) value32;
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 template<class T>
-BOOL LLStringUtilBase<T>::convertToS8(const string_type& string, S8& value)
+bool LLStringUtilBase<T>::convertToS8(const string_type& string, S8& value)
 {
     S32 value32 = 0;
-    BOOL success = convertToS32(string, value32);
+    bool success = convertToS32(string, value32);
     if( success && (S8_MIN <= value32) && (value32 <= S8_MAX) )
     {
         value = (S8) value32;
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 template<class T>
-BOOL LLStringUtilBase<T>::convertToS16(const string_type& string, S16& value)
+bool LLStringUtilBase<T>::convertToS16(const string_type& string, S16& value)
 {
     S32 value32 = 0;
-    BOOL success = convertToS32(string, value32);
+    bool success = convertToS32(string, value32);
     if( success && (S16_MIN <= value32) && (value32 <= S16_MAX) )
     {
         value = (S16) value32;
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 template<class T>
-BOOL LLStringUtilBase<T>::convertToU16(const string_type& string, U16& value)
+bool LLStringUtilBase<T>::convertToU16(const string_type& string, U16& value)
 {
     S32 value32 = 0;
-    BOOL success = convertToS32(string, value32);
+    bool success = convertToS32(string, value32);
     if( success && (U16_MIN <= value32) && (value32 <= U16_MAX) )
     {
         value = (U16) value32;
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 template<class T>
-BOOL LLStringUtilBase<T>::convertToU32(const string_type& string, U32& value)
+bool LLStringUtilBase<T>::convertToU32(const string_type& string, U32& value)
 {
     if( string.empty() )
     {
-        return FALSE;
+        return false;
     }
 
     string_type temp( string );
@@ -1946,17 +1948,17 @@ BOOL LLStringUtilBase<T>::convertToU32(const string_type& string, U32& value)
     if(i_stream >> v)
     {
         value = v;
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 template<class T>
-BOOL LLStringUtilBase<T>::convertToS32(const string_type& string, S32& value)
+bool LLStringUtilBase<T>::convertToS32(const string_type& string, S32& value)
 {
     if( string.empty() )
     {
-        return FALSE;
+        return false;
     }
 
     string_type temp( string );
@@ -1969,34 +1971,34 @@ BOOL LLStringUtilBase<T>::convertToS32(const string_type& string, S32& value)
         //if((LONG_MAX == v) || (LONG_MIN == v))
         //{
         //  // Underflow or overflow
-        //  return FALSE;
+        //  return false;
         //}
 
         value = v;
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 template<class T>
-BOOL LLStringUtilBase<T>::convertToF32(const string_type& string, F32& value)
+bool LLStringUtilBase<T>::convertToF32(const string_type& string, F32& value)
 {
     F64 value64 = 0.0;
-    BOOL success = convertToF64(string, value64);
+    bool success = convertToF64(string, value64);
     if( success && (-F32_MAX <= value64) && (value64 <= F32_MAX) )
     {
         value = (F32) value64;
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 template<class T>
-BOOL LLStringUtilBase<T>::convertToF64(const string_type& string, F64& value)
+bool LLStringUtilBase<T>::convertToF64(const string_type& string, F64& value)
 {
     if( string.empty() )
     {
-        return FALSE;
+        return false;
     }
 
     string_type temp( string );
@@ -2009,13 +2011,13 @@ BOOL LLStringUtilBase<T>::convertToF64(const string_type& string, F64& value)
         //if( ((-HUGE_VAL == v) || (HUGE_VAL == v))) )
         //{
         //  // Underflow or overflow
-        //  return FALSE;
+        //  return false;
         //}
 
         value = v;
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 template<class T>
diff --git a/indra/llcommon/llstringtable.h b/indra/llcommon/llstringtable.h
index e41701ce9c..97f95369e5 100644
--- a/indra/llcommon/llstringtable.h
+++ b/indra/llcommon/llstringtable.h
@@ -51,7 +51,7 @@ public:
     ~LLStringTableEntry();
 
     void incCount()     { mCount++; }
-    BOOL decCount()     { return --mCount; }
+    bool decCount()     { return --mCount != 0; }
 
     char *mString;
     S32  mCount;
diff --git a/indra/llcommon/llsys.cpp b/indra/llcommon/llsys.cpp
index d21afab050..546f35bc81 100644
--- a/indra/llcommon/llsys.cpp
+++ b/indra/llcommon/llsys.cpp
@@ -218,7 +218,7 @@ LLOSInfo::LLOSInfo() :
         DWORD cbData(sizeof(DWORD));
         DWORD data(0);
         HKEY key;
-        BOOL ret_code = RegOpenKeyExW(HKEY_LOCAL_MACHINE, TEXT("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion"), 0, KEY_READ, &key);
+        LSTATUS ret_code = RegOpenKeyExW(HKEY_LOCAL_MACHINE, TEXT("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion"), 0, KEY_READ, &key);
         if (ERROR_SUCCESS == ret_code)
         {
             ret_code = RegQueryValueExW(key, L"UBR", 0, NULL, reinterpret_cast<LPBYTE>(&data), &cbData);
@@ -231,16 +231,8 @@ LLOSInfo::LLOSInfo() :
         if (mBuild >= 22000)
         {
             // At release Windows 11 version was 10.0.22000.194
-            // Windows 10 version was 10.0.19043.1266
-            // There is no warranty that Win10 build won't increase,
-            // so until better solution is found or Microsoft updates
-            // SDK with IsWindows11OrGreater(), indicate "10/11"
-            //
-            // Current alternatives:
-            // Query WMI's Win32_OperatingSystem for OS string. Slow
-            // and likely to return 'compatibility' string.
-            // Check presence of dlls/libs or may be their version.
-            mOSStringSimple = "Microsoft Windows 10/11 ";
+            // According to microsoft win 10 won't ever get that far.
+            mOSStringSimple = "Microsoft Windows 11 ";
         }
     }
 
@@ -273,9 +265,9 @@ LLOSInfo::LLOSInfo() :
 #elif LL_DARWIN
 
     // Initialize mOSStringSimple to something like:
-    // "Mac OS X 10.6.7"
+    // "macOS 10.13.1"
     {
-        const char * DARWIN_PRODUCT_NAME = "Mac OS X";
+        const char * DARWIN_PRODUCT_NAME = "macOS";
 
         int64_t major_version, minor_version, bugfix_version = 0;
 
@@ -298,7 +290,7 @@ LLOSInfo::LLOSInfo() :
     }
 
     // Initialize mOSString to something like:
-    // "Mac OS X 10.6.7 Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386 i386"
+    // "macOS 10.13.1 Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386 i386"
     struct utsname un;
     if(uname(&un) != -1)
     {
@@ -575,7 +567,7 @@ bool LLOSInfo::is64Bit()
     return true;
 #elif defined(_WIN32)
     // 32-bit viewer may be run on both 32-bit and 64-bit Windows, need to elaborate
-    BOOL f64 = FALSE;
+    bool f64 = false;
     return IsWow64Process(GetCurrentProcess(), &f64) && f64;
 #else
     return false;
@@ -1328,11 +1320,11 @@ private:
 // Need an instance of FrameWatcher before it does any good
 static FrameWatcher sFrameWatcher;
 
-BOOL gunzip_file(const std::string& srcfile, const std::string& dstfile)
+bool gunzip_file(const std::string& srcfile, const std::string& dstfile)
 {
     std::string tmpfile;
     const S32 UNCOMPRESS_BUFFER_SIZE = 32768;
-    BOOL retval = FALSE;
+    bool retval = false;
     gzFile src = NULL;
     U8 buffer[UNCOMPRESS_BUFFER_SIZE];
     LLFILE *dst = NULL;
@@ -1364,18 +1356,18 @@ BOOL gunzip_file(const std::string& srcfile, const std::string& dstfile)
     LLFile::remove(dstfile, ENOENT);
 #endif
     if (LLFile::rename(tmpfile, dstfile) == -1) goto err;       /* Flawfinder: ignore */
-    retval = TRUE;
+    retval = true;
 err:
     if (src != NULL) gzclose(src);
     if (dst != NULL) fclose(dst);
     return retval;
 }
 
-BOOL gzip_file(const std::string& srcfile, const std::string& dstfile)
+bool gzip_file(const std::string& srcfile, const std::string& dstfile)
 {
     const S32 COMPRESS_BUFFER_SIZE = 32768;
     std::string tmpfile;
-    BOOL retval = FALSE;
+    bool retval = false;
     U8 buffer[COMPRESS_BUFFER_SIZE];
     gzFile dst = NULL;
     LLFILE *src = NULL;
@@ -1415,7 +1407,7 @@ BOOL gzip_file(const std::string& srcfile, const std::string& dstfile)
     LLFile::remove(dstfile);
 #endif
     if (LLFile::rename(tmpfile, dstfile) == -1) goto err;       /* Flawfinder: ignore */
-    retval = TRUE;
+    retval = true;
  err:
     if (src != NULL) fclose(src);
     if (dst != NULL) gzclose(dst);
diff --git a/indra/llcommon/llsys.h b/indra/llcommon/llsys.h
index 7338b0f0cb..3307285934 100644
--- a/indra/llcommon/llsys.h
+++ b/indra/llcommon/llsys.h
@@ -164,10 +164,10 @@ LL_COMMON_API std::ostream& operator<<(std::ostream& s, const LLOSInfo& info);
 LL_COMMON_API std::ostream& operator<<(std::ostream& s, const LLCPUInfo& info);
 LL_COMMON_API std::ostream& operator<<(std::ostream& s, const LLMemoryInfo& info);
 
-// gunzip srcfile into dstfile.  Returns FALSE on error.
-BOOL LL_COMMON_API gunzip_file(const std::string& srcfile, const std::string& dstfile);
-// gzip srcfile into dstfile.  Returns FALSE on error.
-BOOL LL_COMMON_API gzip_file(const std::string& srcfile, const std::string& dstfile);
+// gunzip srcfile into dstfile.  Returns false on error.
+bool LL_COMMON_API gunzip_file(const std::string& srcfile, const std::string& dstfile);
+// gzip srcfile into dstfile.  Returns false on error.
+bool LL_COMMON_API gzip_file(const std::string& srcfile, const std::string& dstfile);
 
 extern LL_COMMON_API LLCPUInfo gSysCPU;
 
diff --git a/indra/llcommon/llsys_objc.mm b/indra/llcommon/llsys_objc.mm
index 3fd85fb1c9..1393ccea50 100644
--- a/indra/llcommon/llsys_objc.mm
+++ b/indra/llcommon/llsys_objc.mm
@@ -27,38 +27,12 @@
 #import "llsys_objc.h"
 #import <AppKit/AppKit.h>
 
-static auto intAtStringIndex(NSArray *array, int index)
-{
-    return [(NSString *)[array objectAtIndex:index] integerValue];
-}
-
 bool LLGetDarwinOSInfo(int64_t &major, int64_t &minor, int64_t &patch)
 {
-    if (NSAppKitVersionNumber > NSAppKitVersionNumber10_8)
-    {
         NSOperatingSystemVersion osVersion = [[NSProcessInfo processInfo] operatingSystemVersion];
         major = osVersion.majorVersion;
         minor = osVersion.minorVersion;
         patch = osVersion.patchVersion;
-    }
-    else
-    {
-        NSString* versionString = [[NSDictionary dictionaryWithContentsOfFile:
-                                    @"/System/Library/CoreServices/SystemVersion.plist"] objectForKey:@"ProductVersion"];
-        NSArray* versions = [versionString componentsSeparatedByString:@"."];
-        NSUInteger count = [versions count];
-        if (count > 0)
-        {
-            major = intAtStringIndex(versions, 0);
-            if (count > 1)
-            {
-                minor = intAtStringIndex(versions, 1);
-                if (count > 2)
-                {
-                    patch = intAtStringIndex(versions, 2);
-                }
-            }
-        }
-    }
+
     return true;
 }
diff --git a/indra/llcommon/llthread.cpp b/indra/llcommon/llthread.cpp
index e6b0c03371..faaaefd561 100644
--- a/indra/llcommon/llthread.cpp
+++ b/indra/llcommon/llthread.cpp
@@ -189,7 +189,7 @@ void LLThread::threadRun()
 }
 
 LLThread::LLThread(const std::string& name, apr_pool_t *poolp) :
-    mPaused(FALSE),
+    mPaused(false),
     mName(name),
     mThreadp(NULL),
     mStatus(STOPPED),
@@ -421,30 +421,6 @@ void LLThread::unlockData()
 
 //============================================================================
 
-//----------------------------------------------------------------------------
-
-//static
-LLMutex* LLThreadSafeRefCount::sMutex = 0;
-
-//static
-void LLThreadSafeRefCount::initThreadSafeRefCount()
-{
-    if (!sMutex)
-    {
-        sMutex = new LLMutex();
-    }
-}
-
-//static
-void LLThreadSafeRefCount::cleanupThreadSafeRefCount()
-{
-    delete sMutex;
-    sMutex = NULL;
-}
-
-
-//----------------------------------------------------------------------------
-
 LLThreadSafeRefCount::LLThreadSafeRefCount() :
     mRef(0)
 {
diff --git a/indra/llcommon/llthread.h b/indra/llcommon/llthread.h
index e21e6265ea..4194e0014d 100644
--- a/indra/llcommon/llthread.h
+++ b/indra/llcommon/llthread.h
@@ -68,7 +68,7 @@ public:
     // Called from MAIN THREAD.
     void pause();
     void unpause();
-    bool isPaused() { return isStopped() || mPaused == TRUE; }
+    bool isPaused() { return isStopped() || mPaused; }
 
     // Cause the thread to wake up and check its condition
     void wake();
diff --git a/indra/llcommon/lltimer.cpp b/indra/llcommon/lltimer.cpp
index 00a04d87b6..5d0a70a382 100644
--- a/indra/llcommon/lltimer.cpp
+++ b/indra/llcommon/lltimer.cpp
@@ -96,7 +96,7 @@ U32 micro_sleep(U64 us, U32 max_yields)
     LARGE_INTEGER ft;
     ft.QuadPart = -static_cast<S64>(us * 10);  // '-' using relative time
 
-    HANDLE timer = CreateWaitableTimer(NULL, TRUE, NULL);
+    HANDLE timer = CreateWaitableTimer(NULL, true, NULL);
     SetWaitableTimer(timer, &ft, 0, NULL, NULL, 0);
     WaitForSingleObject(timer, INFINITE);
     CloseHandle(timer);
@@ -324,7 +324,7 @@ LLTimer::LLTimer()
         get_timer_info().update();
     }
 
-    mStarted = TRUE;
+    mStarted = true;
     reset();
 }
 
@@ -424,7 +424,7 @@ F32SecondsImplicit LLTimer::getElapsedTimeAndResetF32()
 
 ///////////////////////////////////////////////////////////////////////////////
 
-void  LLTimer::setTimerExpirySec(F32SecondsImplicit expiration)
+void LLTimer::setTimerExpirySec(F32SecondsImplicit expiration)
 {
     mExpirationTicks = get_clock_count()
         + (U64)((F32)(expiration * get_timer_info().mClockFrequency.value()));
@@ -441,31 +441,30 @@ F32SecondsImplicit LLTimer::getRemainingTimeF32() const
 }
 
 
-BOOL  LLTimer::checkExpirationAndReset(F32 expiration)
+bool LLTimer::checkExpirationAndReset(F32 expiration)
 {
     U64 cur_ticks = get_clock_count();
     if (cur_ticks < mExpirationTicks)
     {
-        return FALSE;
+        return false;
     }
 
     mExpirationTicks = cur_ticks
         + (U64)((F32)(expiration * get_timer_info().mClockFrequency));
-    return TRUE;
+    return true;
 }
 
 
-BOOL  LLTimer::hasExpired() const
+bool LLTimer::hasExpired() const
 {
-    return (get_clock_count() >= mExpirationTicks)
-        ? TRUE : FALSE;
+    return get_clock_count() >= mExpirationTicks;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
-BOOL LLTimer::knownBadTimer()
+bool LLTimer::knownBadTimer()
 {
-    BOOL failed = FALSE;
+    bool failed = false;
 
 #if LL_WINDOWS
     WCHAR bad_pci_list[][10] = {L"1039:0530",
@@ -507,7 +506,7 @@ BOOL LLTimer::knownBadTimer()
                 if (!wcscmp(pci_id, bad_pci_list[check]))
                 {
 //                  LL_WARNS() << "unreliable PCI chipset found!! " << pci_id << endl;
-                    failed = TRUE;
+                    failed = true;
                     break;
                 }
             }
@@ -533,7 +532,7 @@ time_t time_corrected()
 
 // Is the current computer (in its current time zone)
 // observing daylight savings time?
-BOOL is_daylight_savings()
+bool is_daylight_savings()
 {
     time_t now = time(NULL);
 
@@ -547,7 +546,7 @@ BOOL is_daylight_savings()
 }
 
 
-struct tm* utc_to_pacific_time(time_t utc_time, BOOL pacific_daylight_time)
+struct tm* utc_to_pacific_time(time_t utc_time, bool pacific_daylight_time)
 {
     S32Hours pacific_offset_hours;
     if (pacific_daylight_time)
diff --git a/indra/llcommon/lltimer.h b/indra/llcommon/lltimer.h
index fe4a3afc7a..d79f250585 100644
--- a/indra/llcommon/lltimer.h
+++ b/indra/llcommon/lltimer.h
@@ -87,19 +87,19 @@ public:
 
 
     // MANIPULATORS
-    void start() { reset(); mStarted = TRUE; }
-    void stop() { mStarted = FALSE; }
+    void start() { reset(); mStarted = true; }
+    void stop() { mStarted = false; }
     void reset();                               // Resets the timer
     void setLastClockCount(U64 current_count);      // Sets the timer so that the next elapsed call will be relative to this time
     void setTimerExpirySec(F32SecondsImplicit expiration);
-    BOOL checkExpirationAndReset(F32 expiration);
-    BOOL hasExpired() const;
+    bool checkExpirationAndReset(F32 expiration);
+    bool hasExpired() const;
     F32SecondsImplicit getElapsedTimeAndResetF32(); // Returns elapsed time in seconds with reset
     F64SecondsImplicit getElapsedTimeAndResetF64();
 
     F32SecondsImplicit getRemainingTimeF32() const;
 
-    static BOOL knownBadTimer();
+    static bool knownBadTimer();
 
     // ACCESSORS
     F32SecondsImplicit getElapsedTimeF32() const;           // Returns elapsed time in seconds
@@ -171,14 +171,14 @@ extern LL_COMMON_API S32 gUTCOffset;
 
 // Is the current computer (in its current time zone)
 // observing daylight savings time?
-LL_COMMON_API BOOL is_daylight_savings();
+LL_COMMON_API bool is_daylight_savings();
 
 // Converts internal "struct tm" time buffer to Pacific Standard/Daylight Time
 // Usage:
 // S32 utc_time;
 // utc_time = time_corrected();
 // struct tm* internal_time = utc_to_pacific_time(utc_time, gDaylight);
-LL_COMMON_API struct tm* utc_to_pacific_time(time_t utc_time, BOOL pacific_daylight_time);
+LL_COMMON_API struct tm* utc_to_pacific_time(time_t utc_time, bool pacific_daylight_time);
 
 LL_COMMON_API void microsecondsToTimecodeString(U64MicrosecondsImplicit current_time, std::string& tcstring);
 LL_COMMON_API void secondsToTimecodeString(F32SecondsImplicit current_time, std::string& tcstring);
diff --git a/indra/llcommon/lltraceaccumulators.h b/indra/llcommon/lltraceaccumulators.h
index 692bbe5acf..ba7acf9547 100644
--- a/indra/llcommon/lltraceaccumulators.h
+++ b/indra/llcommon/lltraceaccumulators.h
@@ -522,9 +522,9 @@ namespace LLTrace
 
     struct BlockTimerStackRecord
     {
-        class BlockTimer*   mActiveTimer;
-        class BlockTimerStatHandle* mTimeBlock;
-        U64                 mChildTime;
+        class BlockTimer*   mActiveTimer{ nullptr };
+        class BlockTimerStatHandle* mTimeBlock{ nullptr };
+        U64                 mChildTime{ 0 };
     };
 
     struct AccumulatorBufferGroup : public LLRefCount
diff --git a/indra/llcommon/lluri.cpp b/indra/llcommon/lluri.cpp
index e93238f0e9..df82276cd2 100644
--- a/indra/llcommon/lluri.cpp
+++ b/indra/llcommon/lluri.cpp
@@ -330,7 +330,7 @@ LLURI::LLURI(const std::string& escaped_str)
     }
 }
 
-static BOOL isDefault(const std::string& scheme, U16 port)
+static bool isDefault(const std::string& scheme, U16 port)
 {
     if (scheme == "http")
         return port == 80;
@@ -339,7 +339,7 @@ static BOOL isDefault(const std::string& scheme, U16 port)
     if (scheme == "ftp")
         return port == 21;
 
-    return FALSE;
+    return false;
 }
 
 void LLURI::parseAuthorityAndPathUsingOpaque()
@@ -627,7 +627,7 @@ std::string LLURI::password() const
     return unescape(pass);
 }
 
-BOOL LLURI::defaultPort() const
+bool LLURI::defaultPort() const
 {
     return isDefault(mScheme, hostPort());
 }
diff --git a/indra/llcommon/lluri.h b/indra/llcommon/lluri.h
index 95c119dee9..37ee0a0ac7 100644
--- a/indra/llcommon/lluri.h
+++ b/indra/llcommon/lluri.h
@@ -99,7 +99,7 @@ public:
   std::string userName() const;
   std::string password() const;
   U16 hostPort() const;         // ex.: 80, will include implicit port
-  BOOL defaultPort() const;     // true if port is default for scheme
+  bool defaultPort() const;     // true if port is default for scheme
   const std::string& escapedPath() const { return mEscapedPath; }
   std::string path() const;     // ex.: "/abc/def", includes leading slash
   LLSD pathArray() const;           // above decoded into an array of strings
diff --git a/indra/llcommon/lluuid.cpp b/indra/llcommon/lluuid.cpp
index be2e51560e..931a6e340d 100644
--- a/indra/llcommon/lluuid.cpp
+++ b/indra/llcommon/lluuid.cpp
@@ -211,20 +211,20 @@ std::string LLUUID::asString() const
     return str;
 }
 
-BOOL LLUUID::set(const char* in_string, BOOL emit)
+bool LLUUID::set(const char* in_string, bool emit)
 {
     return set(ll_safe_string(in_string), emit);
 }
 
-BOOL LLUUID::set(const std::string& in_string, BOOL emit)
+bool LLUUID::set(const std::string& in_string, bool emit)
 {
-    BOOL broken_format = FALSE;
+    bool broken_format = false;
 
     // empty strings should make NULL uuid
     if (in_string.empty())
     {
         setNull();
-        return TRUE;
+        return true;
     }
 
     if (in_string.length() != (UUID_STR_LENGTH - 1))        /* Flawfinder: ignore */
@@ -237,7 +237,7 @@ BOOL LLUUID::set(const std::string& in_string, BOOL emit)
             {
                 LL_WARNS() << "Warning! Using broken UUID string format" << LL_ENDL;
             }
-            broken_format = TRUE;
+            broken_format = true;
         }
         else
         {
@@ -248,7 +248,7 @@ BOOL LLUUID::set(const std::string& in_string, BOOL emit)
                 LL_WARNS() << "Bad UUID string: " << in_string << LL_ENDL;
             }
             setNull();
-            return FALSE;
+            return false;
         }
     }
 
@@ -287,7 +287,7 @@ BOOL LLUUID::set(const std::string& in_string, BOOL emit)
                 LL_WARNS() << "Invalid UUID string character" << LL_ENDL;
             }
             setNull();
-            return FALSE;
+            return false;
         }
 
         mData[i] = mData[i] << 4;
@@ -312,27 +312,27 @@ BOOL LLUUID::set(const std::string& in_string, BOOL emit)
                 LL_WARNS() << "Invalid UUID string character" << LL_ENDL;
             }
             setNull();
-            return FALSE;
+            return false;
         }
         cur_pos++;
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLUUID::validate(const std::string& in_string)
+bool LLUUID::validate(const std::string& in_string)
 {
-    BOOL broken_format = FALSE;
+    bool broken_format = false;
     if (in_string.length() != (UUID_STR_LENGTH - 1))        /* Flawfinder: ignore */
     {
         // I'm a moron.  First implementation didn't have the right UUID format.
         if (in_string.length() == (UUID_STR_LENGTH - 2))        /* Flawfinder: ignore */
         {
-            broken_format = TRUE;
+            broken_format = true;
         }
         else
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -360,7 +360,7 @@ BOOL LLUUID::validate(const std::string& in_string)
         }
         else
         {
-            return FALSE;
+            return false;
         }
 
         cur_pos++;
@@ -376,11 +376,11 @@ BOOL LLUUID::validate(const std::string& in_string)
         }
         else
         {
-            return FALSE;
+            return false;
         }
         cur_pos++;
     }
-    return TRUE;
+    return true;
 }
 
 const LLUUID& LLUUID::operator^=(const LLUUID& rhs)
@@ -510,7 +510,7 @@ S32 LLUUID::getNodeID(unsigned char* node_id)
 }
 
 #elif LL_DARWIN
-// Mac OS X version of the UUID generation code...
+// macOS version of the UUID generation code...
 /*
  * Get an ethernet hardware address, if we can find it...
  */
@@ -736,12 +736,12 @@ void LLUUID::getCurrentTime(uuid_time_t* timestamp)
 
     static uuid_time_t time_last;
     static U32    uuids_this_tick;
-    static BOOL     init = FALSE;
+    static bool     init = false;
 
     if (!init) {
         getSystemTime(&time_last);
         uuids_this_tick = uuids_per_tick;
-        init = TRUE;
+        init = true;
         mMutex = new LLMutex();
     }
 
@@ -889,11 +889,11 @@ U32 LLUUID::getRandomSeed()
    return U32(seed64) ^ U32(seed64 >> 32);
 }
 
-BOOL LLUUID::parseUUID(const std::string& buf, LLUUID* value)
+bool LLUUID::parseUUID(const std::string& buf, LLUUID* value)
 {
     if (buf.empty() || value == NULL)
     {
-        return FALSE;
+        return false;
     }
 
     std::string temp(buf);
@@ -901,9 +901,9 @@ BOOL LLUUID::parseUUID(const std::string& buf, LLUUID* value)
     if (LLUUID::validate(temp))
     {
         value->set(temp);
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 //static
@@ -989,7 +989,7 @@ bool LLUUID::operator!=(const LLUUID& rhs) const
 }
 */
 
-BOOL LLUUID::notNull() const
+bool LLUUID::notNull() const
 {
     U32* word = (U32*)mData;
     return (word[0] | word[1] | word[2] | word[3]) > 0;
@@ -997,10 +997,10 @@ BOOL LLUUID::notNull() const
 
 // Faster than == LLUUID::null because doesn't require
 // as much memory access.
-BOOL LLUUID::isNull() const
+bool LLUUID::isNull() const
 {
     U32* word = (U32*)mData;
-    // If all bits are zero, return !0 == TRUE
+    // If all bits are zero, return !0 == true
     return !(word[0] | word[1] | word[2] | word[3]);
 }
 
diff --git a/indra/llcommon/lluuid.h b/indra/llcommon/lluuid.h
index eea5e39c61..bd4edc7993 100644
--- a/indra/llcommon/lluuid.h
+++ b/indra/llcommon/lluuid.h
@@ -37,8 +37,8 @@ class LLMutex;
 
 const S32 UUID_BYTES = 16;
 const S32 UUID_WORDS = 4;
-const S32 UUID_STR_LENGTH = 37; // actually wrong, should be 36 and use size below
-const S32 UUID_STR_SIZE = 37;
+const S32 UUID_STR_LENGTH = 37; // number of bytes needed to store a UUID as a string
+const S32 UUID_STR_SIZE = 36; // .size() of a UUID in a std::string
 const S32 UUID_BASE85_LENGTH = 21; // including the trailing NULL.
 
 struct uuid_time_t {
@@ -65,8 +65,8 @@ public:
 
     static LLUUID generateNewID(std::string stream = "");   //static version of above for use in initializer expressions such as constructor params, etc.
 
-    BOOL    set(const char *in_string, BOOL emit = TRUE);   // Convert from string, if emit is FALSE, do not emit warnings
-    BOOL    set(const std::string& in_string, BOOL emit = TRUE);    // Convert from string, if emit is FALSE, do not emit warnings
+    bool    set(const char *in_string, bool emit = true);   // Convert from string, if emit is false, do not emit warnings
+    bool    set(const std::string& in_string, bool emit = true);    // Convert from string, if emit is false, do not emit warnings
     void    setNull();                  // Faster than setting to LLUUID::null.
 
     S32     cmpTime(uuid_time_t *t1, uuid_time_t *t2);
@@ -76,14 +76,12 @@ public:
     //
     // ACCESSORS
     //
-    BOOL    isNull() const;         // Faster than comparing to LLUUID::null.
-    BOOL    notNull() const;        // Faster than comparing to LLUUID::null.
+    bool    isNull() const;         // Faster than comparing to LLUUID::null.
+    bool    notNull() const;        // Faster than comparing to LLUUID::null.
     // JC: This is dangerous.  It allows UUIDs to be cast automatically
     // to integers, among other things.  Use isNull() or notNull().
     //      operator bool() const;
 
-    // JC: These must return real bool's (not BOOLs) or else use of the STL
-    // will generate bool-to-int performance warnings.
     bool    operator==(const LLUUID &rhs) const;
     bool    operator!=(const LLUUID &rhs) const;
     bool    operator<(const LLUUID &rhs) const;
@@ -124,7 +122,7 @@ public:
         return tmp[0] ^ tmp[1];
     }
 
-    static BOOL validate(const std::string& in_string); // Validate that the UUID string is legal.
+    static bool validate(const std::string& in_string); // Validate that the UUID string is legal.
 
     static const LLUUID null;
     static LLMutex * mMutex;
@@ -132,7 +130,7 @@ public:
     static U32 getRandomSeed();
     static S32 getNodeID(unsigned char * node_id);
 
-    static BOOL parseUUID(const std::string& buf, LLUUID* value);
+    static bool parseUUID(const std::string& buf, LLUUID* value);
 
     U8 mData[UUID_BYTES];
 };
@@ -153,7 +151,7 @@ struct lluuid_less
 {
     bool operator()(const LLUUID& lhs, const LLUUID& rhs) const
     {
-        return (lhs < rhs) ? true : false;
+        return lhs < rhs;
     }
 };
 
diff --git a/indra/llcommon/llworkerthread.cpp b/indra/llcommon/llworkerthread.cpp
index 67df2b5840..b751c95679 100644
--- a/indra/llcommon/llworkerthread.cpp
+++ b/indra/llcommon/llworkerthread.cpp
@@ -284,7 +284,7 @@ bool LLWorkerClass::yield()
     mWorkerThread->checkPause();
     bool res;
     mMutex.lock();
-    res = (getFlags() & WCF_ABORT_REQUESTED) ? true : false;
+    res = (getFlags() & WCF_ABORT_REQUESTED) != 0;
     mMutex.unlock();
     return res;
 }
diff --git a/indra/llcommon/llworkerthread.h b/indra/llcommon/llworkerthread.h
index 01c96852d3..2a68584ab3 100644
--- a/indra/llcommon/llworkerthread.h
+++ b/indra/llcommon/llworkerthread.h
@@ -137,7 +137,7 @@ public:
     LLWorkerClass(LLWorkerThread* workerthread, const std::string& name);
     virtual ~LLWorkerClass();
 
-    // pure virtual, called from WORKER THREAD, returns TRUE if done
+    // pure virtual, called from WORKER THREAD, returns true if done
     virtual bool doWork(S32 param)=0; // Called from WorkRequest::processRequest()
     // virtual, called from finishRequest() after completed or aborted
     virtual void finishWork(S32 param, bool completed); // called from finishRequest() (WORK THREAD)
@@ -178,7 +178,7 @@ private:
     void clearFlags(U32 flags) { mWorkFlags = mWorkFlags & ~flags; }
     U32  getFlags() { return mWorkFlags; }
 public:
-    bool getFlags(U32 flags) { return mWorkFlags & flags ? true : false; }
+    bool getFlags(U32 flags) { return (mWorkFlags & flags) != 0; }
 
 private:
     // pure virtuals
diff --git a/indra/llcommon/tests/commonmisc_test.cpp b/indra/llcommon/tests/commonmisc_test.cpp
index 3deb864c0c..0057a1f639 100644
--- a/indra/llcommon/tests/commonmisc_test.cpp
+++ b/indra/llcommon/tests/commonmisc_test.cpp
@@ -67,7 +67,7 @@ namespace tut
         std::ostringstream resp;
         resp << "{'connect':true,  'position':[r128,r128,r128], 'look_at':[r0,r1,r0], 'agent_access':'M', 'region_x':i8192, 'region_y':i8192}";
         std::string str = resp.str();
-        LLMemoryStream mstr((U8*)str.c_str(), str.size());
+        LLMemoryStream mstr((U8*)str.c_str(), static_cast<S32>(str.size()));
         LLSD response;
         S32 count = LLSDSerialize::fromNotation(response, mstr, str.size());
         ensure("stream parsed", response.isDefined());
@@ -252,7 +252,7 @@ namespace tut
         resp << "{'label':'short binary test', 'singlebinary':b(1)\"A\", 'singlerawstring':s(1)\"A\", 'endoftest':'end' }";
         std::string str = resp.str();
         LLSD sd;
-        LLMemoryStream mstr((U8*)str.c_str(), str.size());
+        LLMemoryStream mstr((U8*)str.c_str(), static_cast<S32>(str.size()));
         S32 count = LLSDSerialize::fromNotation(sd, mstr, str.size());
         ensure_equals("parse count", count, 5);
         ensure("sd created", sd.isDefined());
@@ -456,7 +456,7 @@ namespace tut
     void mem_object::test<1>()
     {
         const char HELLO_WORLD[] = "hello world";
-        LLMemoryStream mem((U8*)&HELLO_WORLD[0], strlen(HELLO_WORLD));      /* Flawfinder: ignore */
+        LLMemoryStream mem((U8*)&HELLO_WORLD[0], static_cast<S32>(strlen(HELLO_WORLD)));      /* Flawfinder: ignore */
         std::string hello;
         std::string world;
         mem >> hello >> world;
diff --git a/indra/llcommon/tests/lleventdispatcher_test.cpp b/indra/llcommon/tests/lleventdispatcher_test.cpp
index a99acba848..44f772e322 100644
--- a/indra/llcommon/tests/lleventdispatcher_test.cpp
+++ b/indra/llcommon/tests/lleventdispatcher_test.cpp
@@ -491,7 +491,7 @@ namespace tut
             // Partial defaults arrays.
             for (LLSD::String a: ab)
             {
-                LLSD::Integer partition(std::min(partial_offset, dft_array_full[a].size()));
+                LLSD::Integer partition(static_cast<LLSD::Integer>(std::min(partial_offset, dft_array_full[a].size())));
                 dft_array_partial[a] =
                     llsd_copy_array(dft_array_full[a].beginArray() + partition,
                                     dft_array_full[a].endArray());
@@ -508,7 +508,7 @@ namespace tut
                 // (params, dft_array_full). Part of the point of using map-style
                 // defaults is to allow any subset of the target function's
                 // parameters to be optional, not just the rightmost.
-                for (LLSD::Integer ix = 0, ixend = params[a].size(); ix < ixend; ix += 2)
+                for (LLSD::Integer ix = 0, ixend = static_cast<LLSD::Integer>(params[a].size()); ix < ixend; ix += 2)
                 {
                     dft_map_partial[a][params[a][ix].asString()] = dft_array_full[a][ix];
                 }
@@ -696,7 +696,7 @@ namespace tut
         LLSD zipmap(const LLSD& keys, const LLSD& values)
         {
             LLSD map;
-            for (LLSD::Integer i = 0, iend = keys.size(); i < iend; ++i)
+            for (LLSD::Integer i = 0, iend = static_cast<LLSD::Integer>(keys.size()); i < iend; ++i)
             {
                 // Have to select asString() since you can index an LLSD
                 // object with either String or Integer.
@@ -955,7 +955,7 @@ namespace tut
             allreq[a] = zipmap(params[a], LLSD::emptyArray());
             // Same for leftreq, save that we use the subset of the params not
             // supplied by dft_array_partial[a].
-            LLSD::Integer partition(params[a].size() - dft_array_partial[a].size());
+            LLSD::Integer partition(static_cast<LLSD::Integer>(params[a].size() - dft_array_partial[a].size()));
             leftreq[a] = zipmap(llsd_copy_array(params[a].beginArray(),
                                                 params[a].beginArray() + partition),
                                 LLSD::emptyArray());
diff --git a/indra/llcommon/tests/llsdserialize_test.cpp b/indra/llcommon/tests/llsdserialize_test.cpp
index 56fdc51e82..fb2af1d2db 100644
--- a/indra/llcommon/tests/llsdserialize_test.cpp
+++ b/indra/llcommon/tests/llsdserialize_test.cpp
@@ -701,7 +701,7 @@ namespace tut
                 "<key>cam</key><real>1.23</real>"
             "</map></llsd>",
             v,
-            v.size() + 1);
+            static_cast<S32>(v.size()) + 1);
     }
 
     template<> template<>
@@ -721,7 +721,7 @@ namespace tut
                 "<key>cam</key><real>1.23</real>"
             "</map></llsd>",
             v,
-            v.size() + 1);
+            static_cast<S32>(v.size()) + 1);
 
         v.clear();
         v["amy"] = 23;
@@ -734,7 +734,7 @@ namespace tut
                 "<key>cam</key><real>1.23</real>"
             "</map></llsd>",
             v,
-            v.size() + 1);
+            static_cast<S32>(v.size()) + 1);
 
         v.clear();
         v["amy"] = 23;
@@ -751,7 +751,7 @@ namespace tut
                 "<key>cam</key><real>1.23</real>"
             "</map></llsd>",
             v,
-            v.size() + 1);
+            static_cast<S32>(v.size()) + 1);
 
         v.clear();
         v[0] = 23;
@@ -766,7 +766,7 @@ namespace tut
                 "<real>1.23</real>"
             "</array></llsd>",
             v,
-            v.size() + 1);
+            static_cast<S32>(v.size()) + 1);
 
         v.clear();
         v[0] = 23;
@@ -782,7 +782,7 @@ namespace tut
                 "<real>1.23</real>"
             "</array></llsd>",
             v,
-            v.size() + 1);
+            static_cast<S32>(v.size()) + 1);
     }
 
     template<> template<>
@@ -1405,13 +1405,13 @@ namespace tut
         uint32_t size = htonl(1);
         memcpy(&vec[1], &size, sizeof(uint32_t));
         vec.push_back('k');
-        int key_size_loc = vec.size();
+        auto key_size_loc = vec.size();
         size = htonl(1); // 1 too short
         vec.resize(vec.size() + 4);
         memcpy(&vec[key_size_loc], &size, sizeof(uint32_t));
         vec.push_back('a'); vec.push_back('m'); vec.push_back('y');
         vec.push_back('i');
-        int integer_loc = vec.size();
+        auto integer_loc = vec.size();
         vec.resize(vec.size() + 4);
         uint32_t val_int = htonl(23);
         memcpy(&vec[integer_loc], &val_int, sizeof(uint32_t));
@@ -1473,7 +1473,7 @@ namespace tut
         memcpy(&vec[1], &size, sizeof(uint32_t));
         vec.push_back('"'); vec.push_back('a'); vec.push_back('m');
         vec.push_back('y'); vec.push_back('"'); vec.push_back('i');
-        int integer_loc = vec.size();
+        auto integer_loc = vec.size();
         vec.resize(vec.size() + 4);
         uint32_t val_int = htonl(23);
         memcpy(&vec[integer_loc], &val_int, sizeof(uint32_t));
diff --git a/indra/llcommon/tests/llstring_test.cpp b/indra/llcommon/tests/llstring_test.cpp
index ea5b0ee5fc..b68c63a15f 100644
--- a/indra/llcommon/tests/llstring_test.cpp
+++ b/indra/llcommon/tests/llstring_test.cpp
@@ -80,12 +80,12 @@ namespace tut
     void string_index_object_t::test<3>()
     {
         std::string str("Len=5");
-        ensure("isValidIndex failed", LLStringUtil::isValidIndex(str, 0) == TRUE &&
-                                      LLStringUtil::isValidIndex(str, 5) == TRUE &&
-                                      LLStringUtil::isValidIndex(str, 6) == FALSE);
+        ensure("isValidIndex failed", LLStringUtil::isValidIndex(str, 0) == true &&
+                                      LLStringUtil::isValidIndex(str, 5) == true &&
+                                      LLStringUtil::isValidIndex(str, 6) == false);
 
         std::string str1;
-        ensure("isValidIndex failed fo rempty string", LLStringUtil::isValidIndex(str1, 0) == FALSE);
+        ensure("isValidIndex failed fo rempty string", LLStringUtil::isValidIndex(str1, 0) == false);
     }
 
     template<> template<>
@@ -153,10 +153,10 @@ namespace tut
     void string_index_object_t::test<10>()
     {
         std::string str_val("Second");
-        ensure("1. isHead failed", LLStringUtil::isHead(str_val, "SecondLife Source") == TRUE);
-        ensure("2. isHead failed", LLStringUtil::isHead(str_val, " SecondLife Source") == FALSE);
+        ensure("1. isHead failed", LLStringUtil::isHead(str_val, "SecondLife Source") == true);
+        ensure("2. isHead failed", LLStringUtil::isHead(str_val, " SecondLife Source") == false);
         std::string str_val2("");
-        ensure("3. isHead failed", LLStringUtil::isHead(str_val2, "") == FALSE);
+        ensure("3. isHead failed", LLStringUtil::isHead(str_val2, "") == false);
     }
 
     template<> template<>
@@ -206,10 +206,10 @@ namespace tut
     void string_index_object_t::test<15>()
     {
         std::string str_val("Hello.\n\r\t");
-        ensure("containsNonprintable failed", LLStringUtil::containsNonprintable(str_val) == TRUE);
+        ensure("containsNonprintable failed", LLStringUtil::containsNonprintable(str_val) == true);
 
         str_val = "ABC ";
-        ensure("containsNonprintable failed", LLStringUtil::containsNonprintable(str_val) == FALSE);
+        ensure("containsNonprintable failed", LLStringUtil::containsNonprintable(str_val) == false);
     }
 
     template<> template<>
@@ -231,7 +231,7 @@ namespace tut
     template<> template<>
     void string_index_object_t::test<17>()
     {
-        BOOL value;
+        bool value;
         std::string str_val("1");
         ensure("convertToBOOL 1 failed", LLStringUtil::convertToBOOL(str_val, value) && value);
         str_val = "T";
@@ -457,17 +457,17 @@ namespace tut
         std::string lhs_str("PROgraM12files");
         std::string rhs_str("PROgram12Files");
         ensure("compareDict 1 failed", LLStringUtil::compareDict(lhs_str, rhs_str) < 0);
-        ensure("precedesDict 1 failed", LLStringUtil::precedesDict(lhs_str, rhs_str) == TRUE);
+        ensure("precedesDict 1 failed", LLStringUtil::precedesDict(lhs_str, rhs_str) == true);
 
         lhs_str = "PROgram12Files";
         rhs_str = "PROgram12Files";
         ensure("compareDict 2 failed", LLStringUtil::compareDict(lhs_str, rhs_str) == 0);
-        ensure("precedesDict 2 failed", LLStringUtil::precedesDict(lhs_str, rhs_str) == FALSE);
+        ensure("precedesDict 2 failed", LLStringUtil::precedesDict(lhs_str, rhs_str) == false);
 
         lhs_str = "PROgram12Files";
         rhs_str = "PROgRAM12FILES";
         ensure("compareDict 3 failed", LLStringUtil::compareDict(lhs_str, rhs_str) > 0);
-        ensure("precedesDict 3 failed", LLStringUtil::precedesDict(lhs_str, rhs_str) == FALSE);
+        ensure("precedesDict 3 failed", LLStringUtil::precedesDict(lhs_str, rhs_str) == false);
     }
 
     template<> template<>
diff --git a/indra/llcommon/tests/threadsafeschedule_test.cpp b/indra/llcommon/tests/threadsafeschedule_test.cpp
index f2f17dd2e6..5e5d6e1259 100644
--- a/indra/llcommon/tests/threadsafeschedule_test.cpp
+++ b/indra/llcommon/tests/threadsafeschedule_test.cpp
@@ -47,11 +47,11 @@ namespace tut
         // the timestamp for each one -- but since we're passing explicit
         // timestamps, make the queue reorder them.
         auto now{ Queue::Clock::now() };
-        queue.push(Queue::TimeTuple(now + 200ms, "ghi"));
+        queue.push(Queue::TimeTuple(now + 200ms, "ghi"s));
         // Given the various push() overloads, you have to match the type
         // exactly: conversions are ambiguous.
-        queue.push("abc"s);
-        queue.push(now + 100ms, "def");
+        queue.push(now, "abc"s);
+        queue.push(now + 100ms, "def"s);
         queue.close();
         auto entry = queue.pop();
         ensure_equals("failed to pop first", std::get<0>(entry), "abc"s);
diff --git a/indra/llcommon/threadpool.cpp b/indra/llcommon/threadpool.cpp
index 302bbe6f8d..451e60c083 100644
--- a/indra/llcommon/threadpool.cpp
+++ b/indra/llcommon/threadpool.cpp
@@ -110,6 +110,10 @@ void LL::ThreadPoolBase::start()
 LL::ThreadPoolBase::~ThreadPoolBase()
 {
     close();
+    if (!LLEventPumps::wasDeleted())
+    {
+        LLEventPumps::instance().obtain("LLApp").stopListening(mName);
+    }
 }
 
 void LL::ThreadPoolBase::close()
diff --git a/indra/llcorehttp/_httplibcurl.cpp b/indra/llcorehttp/_httplibcurl.cpp
index e646271c84..6a15f08011 100644
--- a/indra/llcorehttp/_httplibcurl.cpp
+++ b/indra/llcorehttp/_httplibcurl.cpp
@@ -88,7 +88,7 @@ void HttpLibcurl::shutdown()
 
     if (mMultiHandles)
     {
-        for (int policy_class(0); policy_class < mPolicyCount; ++policy_class)
+        for (unsigned int policy_class(0); policy_class < mPolicyCount; ++policy_class)
         {
             if (mMultiHandles[policy_class])
             {
@@ -122,7 +122,7 @@ void HttpLibcurl::start(int policy_count)
     mActiveHandles = new int [mPolicyCount];
     mDirtyPolicy = new bool [mPolicyCount];
 
-    for (int policy_class(0); policy_class < mPolicyCount; ++policy_class)
+    for (unsigned int policy_class(0); policy_class < mPolicyCount; ++policy_class)
     {
         if (NULL == (mMultiHandles[policy_class] = curl_multi_init()))
         {
@@ -148,7 +148,7 @@ HttpService::ELoopSpeed HttpLibcurl::processTransport()
     HttpService::ELoopSpeed ret(HttpService::REQUEST_SLEEP);
 
     // Give libcurl some cycles to do I/O & callbacks
-    for (int policy_class(0); policy_class < mPolicyCount; ++policy_class)
+    for (unsigned int policy_class(0); policy_class < mPolicyCount; ++policy_class)
     {
         if (! mMultiHandles[policy_class])
         {
@@ -442,18 +442,18 @@ bool HttpLibcurl::completeRequest(CURLM * multi_handle, CURL * handle, CURLcode
 
 int HttpLibcurl::getActiveCount() const
 {
-    return mActiveOps.size();
+    return static_cast<int>(mActiveOps.size());
 }
 
 
-int HttpLibcurl::getActiveCountInClass(int policy_class) const
+int HttpLibcurl::getActiveCountInClass(unsigned int policy_class) const
 {
     llassert_always(policy_class < mPolicyCount);
 
     return mActiveHandles ? mActiveHandles[policy_class] : 0;
 }
 
-void HttpLibcurl::policyUpdated(int policy_class)
+void HttpLibcurl::policyUpdated(unsigned int policy_class)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_NETWORK;
     if (policy_class < 0 || policy_class >= mPolicyCount || ! mMultiHandles)
diff --git a/indra/llcorehttp/_httplibcurl.h b/indra/llcorehttp/_httplibcurl.h
index a1b537d354..3631965837 100644
--- a/indra/llcorehttp/_httplibcurl.h
+++ b/indra/llcorehttp/_httplibcurl.h
@@ -107,7 +107,7 @@ public:
     ///
     /// Threading:  called by worker thread.
     int getActiveCount() const;
-    int getActiveCountInClass(int policy_class) const;
+    int getActiveCountInClass(unsigned int policy_class) const;
 
     /// Attempt to cancel a request identified by handle.
     ///
@@ -124,7 +124,7 @@ public:
     /// initialization and dynamic option setting.
     ///
     /// Threading:  called by worker thread.
-    void policyUpdated(int policy_class);
+    void policyUpdated(unsigned int policy_class);
 
     /// Allocate a curl handle for caller.  May be freed using
     /// either the freeHandle() method or calling curl_easy_cleanup()
@@ -211,7 +211,7 @@ protected:
     HttpService *       mService;           // Simple reference, not owner
     HandleCache         mHandleCache;       // Handle allocator, owner
     active_set_t        mActiveOps;
-    int                 mPolicyCount;
+    unsigned int        mPolicyCount;
     CURLM **            mMultiHandles;      // One handle per policy class
     int *               mActiveHandles;     // Active count per policy class
     bool *              mDirtyPolicy;       // Dirty policy update waiting for stall (per pc)
diff --git a/indra/llcorehttp/_httpoprequest.cpp b/indra/llcorehttp/_httpoprequest.cpp
index 5165a6eb62..6186e7a308 100644
--- a/indra/llcorehttp/_httpoprequest.cpp
+++ b/indra/llcorehttp/_httpoprequest.cpp
@@ -267,7 +267,7 @@ void HttpOpRequest::visitNotifier(HttpRequest * request)
         if (mReplyOffset || mReplyLength)
         {
             // Got an explicit offset/length in response
-            response->setRange(mReplyOffset, mReplyLength, mReplyFullLength);
+            response->setRange(mReplyOffset, static_cast<unsigned int>(mReplyLength), static_cast<unsigned int>(mReplyFullLength));
         }
         response->setContentType(mReplyConType);
         response->setRetries(mPolicyRetries, mPolicy503Retries);
@@ -328,7 +328,7 @@ HttpStatus HttpOpRequest::setupGetByteRange(HttpRequest::policy_t policy_id,
     LL_PROFILE_ZONE_SCOPED_CATEGORY_NETWORK;
     setupCommon(policy_id, url, NULL, options, headers);
     mReqMethod = HOR_GET;
-    mReqOffset = offset;
+    mReqOffset = static_cast<off_t>(offset);
     mReqLength = len;
     if (offset || len)
     {
@@ -607,7 +607,7 @@ HttpStatus HttpOpRequest::prepareRequest(HttpService * service)
             long data_size(0);
             if (mReqBody)
             {
-                data_size = mReqBody->size();
+                data_size = static_cast<long>(mReqBody->size());
             }
             check_curl_easy_setopt(mCurlHandle, CURLOPT_POSTFIELDS, static_cast<void *>(NULL));
             check_curl_easy_setopt(mCurlHandle, CURLOPT_POSTFIELDSIZE, data_size);
@@ -618,13 +618,14 @@ HttpStatus HttpOpRequest::prepareRequest(HttpService * service)
     case HOR_PATCH:
         check_curl_easy_setopt(mCurlHandle, CURLOPT_CUSTOMREQUEST, "PATCH");
         // fall through.  The rest is the same as PUT
+        [[fallthrough]];
     case HOR_PUT:
         {
             check_curl_easy_setopt(mCurlHandle, CURLOPT_UPLOAD, 1);
             long data_size(0);
             if (mReqBody)
             {
-                data_size = mReqBody->size();
+                data_size = static_cast<long>(mReqBody->size());
             }
             check_curl_easy_setopt(mCurlHandle, CURLOPT_INFILESIZE, data_size);
             mCurlHeaders = curl_slist_append(mCurlHeaders, "Expect:");
diff --git a/indra/llcorehttp/_httppolicy.cpp b/indra/llcorehttp/_httppolicy.cpp
index 704c8abb93..a39d2f21a9 100644
--- a/indra/llcorehttp/_httppolicy.cpp
+++ b/indra/llcorehttp/_httppolicy.cpp
@@ -98,7 +98,7 @@ HttpPolicy::~HttpPolicy()
 
 HttpRequest::policy_t HttpPolicy::createPolicyClass()
 {
-    const HttpRequest::policy_t policy_class(mClasses.size());
+    const HttpRequest::policy_t policy_class(static_cast<HttpRequest::policy_t>(mClasses.size()));
     if (policy_class >= HTTP_POLICY_CLASS_LIMIT)
     {
         return HttpRequest::INVALID_POLICY_ID;
@@ -432,8 +432,8 @@ int HttpPolicy::getReadyCount(HttpRequest::policy_t policy_class) const
 {
     if (policy_class < mClasses.size())
     {
-        return (mClasses[policy_class]->mReadyQueue.size()
-                + mClasses[policy_class]->mRetryQueue.size());
+        return static_cast<int>((mClasses[policy_class]->mReadyQueue.size()
+            + mClasses[policy_class]->mRetryQueue.size()));
     }
     return 0;
 }
diff --git a/indra/llcorehttp/_httpservice.cpp b/indra/llcorehttp/_httpservice.cpp
index d543512ec4..5880fb7e87 100644
--- a/indra/llcorehttp/_httpservice.cpp
+++ b/indra/llcorehttp/_httpservice.cpp
@@ -317,7 +317,7 @@ void HttpService::threadRun(LLCoreInt::HttpThread * thread)
         }
         catch (std::bad_alloc&)
         {
-            LLMemory::logMemoryInfo(TRUE);
+            LLMemory::logMemoryInfo(true);
 
             //output possible call stacks to log file.
             LLError::LLUserWarningMsg::showOutOfMemory();
diff --git a/indra/llcorehttp/bufferarray.cpp b/indra/llcorehttp/bufferarray.cpp
index 50a8d461a7..6b33661d8f 100644
--- a/indra/llcorehttp/bufferarray.cpp
+++ b/indra/llcorehttp/bufferarray.cpp
@@ -149,7 +149,7 @@ size_t BufferArray::append(const void * src, size_t len)
         }
         catch (std::bad_alloc&)
         {
-            LLMemory::logMemoryInfo(TRUE);
+            LLMemory::logMemoryInfo(true);
 
             //output possible call stacks to log file.
             LLError::LLCallStacks::print();
diff --git a/indra/llcorehttp/examples/http_texture_load.cpp b/indra/llcorehttp/examples/http_texture_load.cpp
index 4d1e52b766..72e0c29a24 100644
--- a/indra/llcorehttp/examples/http_texture_load.cpp
+++ b/indra/llcorehttp/examples/http_texture_load.cpp
@@ -24,6 +24,8 @@
  * $/LicenseInfo$
  */
 
+#include "linden_common.h"
+
 #include <iostream>
 #include <cstdio>
 #include <cstdlib>
@@ -33,8 +35,6 @@
 #include <pthread.h>
 #endif
 
-#include "linden_common.h"
-
 #include "httpcommon.h"
 #include "httprequest.h"
 #include "httphandler.h"
@@ -519,7 +519,7 @@ void WorkingSet::onCompleted(LLCore::HttpHandle handle, LLCore::HttpResponse * r
         {
             // More success
             LLCore::BufferArray * data(response->getBody());
-            mByteCount += data ? data->size() : 0;
+            mByteCount += data ? static_cast<long>(data->size()) : 0L;
             ++mSuccesses;
         }
         else
@@ -602,7 +602,7 @@ void WorkingSet::loadAssetUuids(FILE * in)
             mAssets.push_back(asset);
         }
     }
-    mRemaining = mLimit = mAssets.size();
+    mRemaining = mLimit = static_cast<int>(mAssets.size());
 }
 
 
diff --git a/indra/llcrashlogger/llcrashlogger.cpp b/indra/llcrashlogger/llcrashlogger.cpp
index b36f89b750..b1b698375a 100644
--- a/indra/llcrashlogger/llcrashlogger.cpp
+++ b/indra/llcrashlogger/llcrashlogger.cpp
@@ -50,8 +50,8 @@
 #include <curl/curl.h>
 #include <openssl/crypto.h>
 
-BOOL gBreak = false;
-BOOL gSent = false;
+bool gBreak = false;
+bool gSent = false;
 
 int LLCrashLogger::ssl_mutex_count = 0;
 LLCoreInt::HttpMutex ** LLCrashLogger::ssl_mutex_list = NULL;
@@ -131,7 +131,7 @@ std::string getStartupStateFromLog(std::string& sllog)
     std::string startup_state = "STATE_FIRST";
     std::string startup_token = "Startup state changing from ";
 
-    int index = sllog.rfind(startup_token);
+    auto index = sllog.rfind(startup_token);
     if (index < 0 || index + startup_token.length() > sllog.length()) {
         return startup_state;
     }
@@ -187,7 +187,7 @@ bool LLCrashLogger::readMinidump(std::string minidump_path)
     size_t length=0;
 
     llifstream minidump_stream(minidump_path.c_str(), std::ios_base::in | std::ios_base::binary);
-    if(minidump_stream.is_open())
+    if (minidump_stream.is_open())
     {
         minidump_stream.seekg(0, std::ios::end);
         length = (size_t)minidump_stream.tellg();
@@ -207,7 +207,7 @@ bool LLCrashLogger::readMinidump(std::string minidump_path)
         LL_WARNS("CRASHREPORT") << "failed to open minidump "<<minidump_path<<LL_ENDL;
     }
 
-    return (length>0?true:false);
+    return length > 0;
 }
 
 void LLCrashLogger::gatherFiles()
diff --git a/indra/llcrashlogger/llcrashlogger.h b/indra/llcrashlogger/llcrashlogger.h
index a5839b4622..e5bf19434a 100644
--- a/indra/llcrashlogger/llcrashlogger.h
+++ b/indra/llcrashlogger/llcrashlogger.h
@@ -77,7 +77,7 @@ protected:
     static void ssl_locking_callback(int mode, int type, const char * file, int line);
 
     S32 mCrashBehavior;
-    BOOL mCrashInPreviousExec;
+    bool mCrashInPreviousExec;
     std::map<std::string, std::string> mFileMap;
     std::string mGridName;
     LLControlGroup mCrashSettings;
diff --git a/indra/llfilesystem/lldir.cpp b/indra/llfilesystem/lldir.cpp
index a92b994b58..42e91963c1 100644
--- a/indra/llfilesystem/lldir.cpp
+++ b/indra/llfilesystem/lldir.cpp
@@ -638,7 +638,7 @@ std::string LLDir::getBaseFileName(const std::string& filepath, bool strip_exten
 std::string LLDir::getDirName(const std::string& filepath) const
 {
     std::size_t offset = filepath.find_last_of(getDirDelimiter());
-    S32 len = (offset == std::string::npos) ? 0 : offset;
+    auto len = (offset == std::string::npos) ? 0 : offset;
     std::string dirname = filepath.substr(0, len);
     return dirname;
 }
@@ -876,15 +876,15 @@ std::string LLDir::getTempFilename() const
 }
 
 // static
-std::string LLDir::getScrubbedFileName(const std::string uncleanFileName)
+std::string LLDir::getScrubbedFileName(std::string_view uncleanFileName)
 {
     std::string name(uncleanFileName);
     const std::string illegalChars(getForbiddenFileChars());
     // replace any illegal file chars with and underscore '_'
-    for( unsigned int i = 0; i < illegalChars.length(); i++ )
+    for (const char& ch : illegalChars)
     {
-        int j = -1;
-        while((j = name.find(illegalChars[i])) > -1)
+        std::string::size_type j{ 0 };
+        while ((j = name.find(ch, j)) != std::string::npos)
         {
             name[j] = '_';
         }
diff --git a/indra/llfilesystem/lldir.h b/indra/llfilesystem/lldir.h
index be82f55e46..b0d2b6aada 100644
--- a/indra/llfilesystem/lldir.h
+++ b/indra/llfilesystem/lldir.h
@@ -178,7 +178,7 @@ class LLDir
     static std::string getDumpLogsDirPath(const std::string &file_name = "");
 
     // For producing safe download file names from potentially unsafe ones
-    static std::string getScrubbedFileName(const std::string uncleanFileName);
+    static std::string getScrubbedFileName(std::string_view uncleanFileName);
     static std::string getForbiddenFileChars();
     void setDumpDir( const std::string& path );
 
diff --git a/indra/llfilesystem/lldir_linux.cpp b/indra/llfilesystem/lldir_linux.cpp
index 1992cb83c7..69cfedebc7 100644
--- a/indra/llfilesystem/lldir_linux.cpp
+++ b/indra/llfilesystem/lldir_linux.cpp
@@ -255,11 +255,11 @@ bool LLDir_Linux::fileExists(const std::string &filename) const
     int res = stat(filename.c_str(), &stat_data);
     if (!res)
     {
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
diff --git a/indra/llfilesystem/lldir_mac.cpp b/indra/llfilesystem/lldir_mac.cpp
index 2b51930aab..b25c654e31 100644
--- a/indra/llfilesystem/lldir_mac.cpp
+++ b/indra/llfilesystem/lldir_mac.cpp
@@ -1,6 +1,6 @@
 /**
  * @file lldir_mac.cpp
- * @brief Implementation of directory utilities for Mac OS X
+ * @brief Implementation of directory utilities for macOS
  *
  * $LicenseInfo:firstyear=2002&license=viewerlgpl$
  * Second Life Viewer Source Code
diff --git a/indra/llfilesystem/lldir_mac.h b/indra/llfilesystem/lldir_mac.h
index dbb8d85e81..f812ee810b 100644
--- a/indra/llfilesystem/lldir_mac.h
+++ b/indra/llfilesystem/lldir_mac.h
@@ -1,6 +1,6 @@
 /**
  * @file lldir_mac.h
- * @brief Definition of directory utilities class for Mac OS X
+ * @brief Definition of directory utilities class for macOS
  *
  * $LicenseInfo:firstyear=2000&license=viewerlgpl$
  * Second Life Viewer Source Code
diff --git a/indra/llfilesystem/lldir_utils_objc.h b/indra/llfilesystem/lldir_utils_objc.h
index 142933972a..1d9cb34e19 100644
--- a/indra/llfilesystem/lldir_utils_objc.h
+++ b/indra/llfilesystem/lldir_utils_objc.h
@@ -1,6 +1,6 @@
 /**
  * @file lldir_utils_objc.h
- * @brief Definition of directory utilities class for Mac OS X
+ * @brief Definition of directory utilities class for macOS
  *
  * $LicenseInfo:firstyear=2020&license=viewerlgpl$
  * Second Life Viewer Source Code
diff --git a/indra/llfilesystem/lldir_utils_objc.mm b/indra/llfilesystem/lldir_utils_objc.mm
index 20540fb93c..01fe9e1f2c 100644
--- a/indra/llfilesystem/lldir_utils_objc.mm
+++ b/indra/llfilesystem/lldir_utils_objc.mm
@@ -1,6 +1,6 @@
 /** 
  * @file lldir_utils_objc.mm
- * @brief Cocoa implementation of directory utilities for Mac OS X
+ * @brief Cocoa implementation of directory utilities for macOS
  *
  * $LicenseInfo:firstyear=2020&license=viewerlgpl$
  * Second Life Viewer Source Code
diff --git a/indra/llfilesystem/lldir_win32.cpp b/indra/llfilesystem/lldir_win32.cpp
index 5c85f0d3d4..a607c70b44 100644
--- a/indra/llfilesystem/lldir_win32.cpp
+++ b/indra/llfilesystem/lldir_win32.cpp
@@ -47,14 +47,16 @@ DWORD GetDllVersion(LPCTSTR lpszDllName);
 
 namespace
 { // anonymous
-    enum class prst { INIT, OPEN, SKIP } state = prst::INIT;
+    enum class prst { INIT, OPEN, SKIP };
+    prst state{ prst::INIT };
+
     // This is called so early that we can't count on static objects being
     // properly constructed yet, so declare a pointer instead of an instance.
     std::ofstream* prelogf = nullptr;
 
     void prelog(const std::string& message)
     {
-        boost::optional<std::string> prelog_name;
+        std::optional<std::string> prelog_name;
 
         switch (state)
         {
@@ -75,6 +77,7 @@ namespace
             (*prelogf) << "========================================================================"
                        << std::endl;
             // fall through, don't break
+            [[fallthrough]];
 
         case prst::OPEN:
             (*prelogf) << message << std::endl;
@@ -230,7 +233,7 @@ LLDir_Win32::LLDir_Win32()
     {
         w_str[size] = '\0';
         mExecutablePathAndName = utf16str_to_utf8str(llutf16string(w_str));
-        S32 path_end = mExecutablePathAndName.find_last_of('\\');
+        auto path_end = mExecutablePathAndName.find_last_of('\\');
         if (path_end != std::string::npos)
         {
             mExecutableDir = mExecutablePathAndName.substr(0, path_end);
@@ -379,11 +382,11 @@ bool LLDir_Win32::fileExists(const std::string &filename) const
     int res = LLFile::stat(filename, &stat_data);
     if (!res)
     {
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
diff --git a/indra/llfilesystem/lldir_win32.h b/indra/llfilesystem/lldir_win32.h
index 2830364f15..ab2726f1a0 100644
--- a/indra/llfilesystem/lldir_win32.h
+++ b/indra/llfilesystem/lldir_win32.h
@@ -50,7 +50,7 @@ public:
     /*virtual*/ std::string getLLPluginFilename(std::string base_name);
 
 private:
-    void* mDirSearch_h;
+    void* mDirSearch_h{ nullptr };
     llutf16string mCurrentDir;
 };
 
diff --git a/indra/llfilesystem/lldiskcache.cpp b/indra/llfilesystem/lldiskcache.cpp
index 54e49ebcb8..da2e960ed3 100644
--- a/indra/llfilesystem/lldiskcache.cpp
+++ b/indra/llfilesystem/lldiskcache.cpp
@@ -222,6 +222,8 @@ const std::string LLDiskCache::assetTypeToString(LLAssetType::EType at)
         { LLAssetType::AT_MESH, "MESH" },
         { LLAssetType::AT_SETTINGS, "SETTINGS" },
         { LLAssetType::AT_MATERIAL, "MATERIAL" },
+        { LLAssetType::AT_GLTF, "GLTF" },
+        { LLAssetType::AT_GLTF_BIN, "GLTF_BIN" },
         { LLAssetType::AT_UNKNOWN, "UNKNOWN" }
     };
 
diff --git a/indra/llfilesystem/llfilesystem.cpp b/indra/llfilesystem/llfilesystem.cpp
index 4c836c8838..235aae0be3 100644
--- a/indra/llfilesystem/llfilesystem.cpp
+++ b/indra/llfilesystem/llfilesystem.cpp
@@ -124,14 +124,14 @@ bool LLFileSystem::renameFile(const LLUUID& old_file_id, const LLAssetType::ETyp
 
     if (LLFile::rename(old_filename, new_filename) != 0)
     {
-        // We would like to return FALSE here indicating the operation
+        // We would like to return false here indicating the operation
         // failed but the original code does not and doing so seems to
         // break a lot of things so we go with the flow...
-        //return FALSE;
+        //return false;
         LL_WARNS() << "Failed to rename " << old_file_id << " to " << new_id_str << " reason: "  << strerror(errno) << LL_ENDL;
     }
 
-    return TRUE;
+    return true;
 }
 
 // static
@@ -153,9 +153,9 @@ S32 LLFileSystem::getFileSize(const LLUUID& file_id, const LLAssetType::EType fi
     return file_size;
 }
 
-BOOL LLFileSystem::read(U8* buffer, S32 bytes)
+bool LLFileSystem::read(U8* buffer, S32 bytes)
 {
-    BOOL success = FALSE;
+    bool success = false;
 
     std::string id;
     mFileID.toString(id);
@@ -183,7 +183,7 @@ BOOL LLFileSystem::read(U8* buffer, S32 bytes)
         mPosition += mBytesRead;
         if (mBytesRead)
         {
-            success = TRUE;
+            success = true;
         }
     }
 
@@ -195,19 +195,19 @@ S32 LLFileSystem::getLastBytesRead()
     return mBytesRead;
 }
 
-BOOL LLFileSystem::eof()
+bool LLFileSystem::eof()
 {
     return mPosition >= getSize();
 }
 
-BOOL LLFileSystem::write(const U8* buffer, S32 bytes)
+bool LLFileSystem::write(const U8* buffer, S32 bytes)
 {
     std::string id_str;
     mFileID.toString(id_str);
     const std::string extra_info = "";
     const std::string filename =  LLDiskCache::getInstance()->metaDataToFilepath(id_str, mFileType, extra_info);
 
-    BOOL success = FALSE;
+    bool success = false;
 
     if (mMode == APPEND)
     {
@@ -218,7 +218,7 @@ BOOL LLFileSystem::write(const U8* buffer, S32 bytes)
 
             mPosition = ofs.tellp(); // <FS:Ansariel> Fix asset caching
 
-            success = TRUE;
+            success = true;
         }
     }
     // <FS:Ansariel> Fix asset caching
@@ -231,7 +231,7 @@ BOOL LLFileSystem::write(const U8* buffer, S32 bytes)
             ofs.seekp(mPosition, std::ios::beg);
             ofs.write((const char*)buffer, bytes);
             mPosition += bytes;
-            success = TRUE;
+            success = true;
         }
         else
         {
@@ -241,7 +241,7 @@ BOOL LLFileSystem::write(const U8* buffer, S32 bytes)
             {
                 ofs.write((const char*)buffer, bytes);
                 mPosition += bytes;
-                success = TRUE;
+                success = true;
             }
         }
     }
@@ -255,14 +255,14 @@ BOOL LLFileSystem::write(const U8* buffer, S32 bytes)
 
             mPosition += bytes;
 
-            success = TRUE;
+            success = true;
         }
     }
 
     return success;
 }
 
-BOOL LLFileSystem::seek(S32 offset, S32 origin)
+bool LLFileSystem::seek(S32 offset, S32 origin)
 {
     if (-1 == origin)
     {
@@ -278,18 +278,18 @@ BOOL LLFileSystem::seek(S32 offset, S32 origin)
         LL_WARNS() << "Attempt to seek past end of file" << LL_ENDL;
 
         mPosition = size;
-        return FALSE;
+        return false;
     }
     else if (new_pos < 0)
     {
         LL_WARNS() << "Attempt to seek past beginning of file" << LL_ENDL;
 
         mPosition = 0;
-        return FALSE;
+        return false;
     }
 
     mPosition = new_pos;
-    return TRUE;
+    return true;
 }
 
 S32 LLFileSystem::tell() const
@@ -308,19 +308,19 @@ S32 LLFileSystem::getMaxSize()
     return INT_MAX;
 }
 
-BOOL LLFileSystem::rename(const LLUUID& new_id, const LLAssetType::EType new_type)
+bool LLFileSystem::rename(const LLUUID& new_id, const LLAssetType::EType new_type)
 {
     LLFileSystem::renameFile(mFileID, mFileType, new_id, new_type);
 
     mFileID = new_id;
     mFileType = new_type;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLFileSystem::remove()
+bool LLFileSystem::remove()
 {
     LLFileSystem::removeFile(mFileID, mFileType);
 
-    return TRUE;
+    return true;
 }
diff --git a/indra/llfilesystem/llfilesystem.h b/indra/llfilesystem/llfilesystem.h
index d934a408c2..ea1b9cf3a1 100644
--- a/indra/llfilesystem/llfilesystem.h
+++ b/indra/llfilesystem/llfilesystem.h
@@ -40,18 +40,18 @@ class LLFileSystem
         LLFileSystem(const LLUUID& file_id, const LLAssetType::EType file_type, S32 mode = LLFileSystem::READ);
         ~LLFileSystem();
 
-        BOOL read(U8* buffer, S32 bytes);
+        bool read(U8* buffer, S32 bytes);
         S32  getLastBytesRead();
-        BOOL eof();
+        bool eof();
 
-        BOOL write(const U8* buffer, S32 bytes);
-        BOOL seek(S32 offset, S32 origin = -1);
+        bool write(const U8* buffer, S32 bytes);
+        bool seek(S32 offset, S32 origin = -1);
         S32  tell() const;
 
         S32 getSize();
         S32 getMaxSize();
-        BOOL rename(const LLUUID& new_id, const LLAssetType::EType new_type);
-        BOOL remove();
+        bool rename(const LLUUID& new_id, const LLAssetType::EType new_type);
+        bool remove();
 
         static bool getExists(const LLUUID& file_id, const LLAssetType::EType file_type);
         static bool removeFile(const LLUUID& file_id, const LLAssetType::EType file_type, int suppress_error = 0);
diff --git a/indra/llfilesystem/lllfsthread.cpp b/indra/llfilesystem/lllfsthread.cpp
index 7d135b4472..6a882f64a8 100644
--- a/indra/llfilesystem/lllfsthread.cpp
+++ b/indra/llfilesystem/lllfsthread.cpp
@@ -45,7 +45,7 @@ void LLLFSThread::initClass(bool local_is_threaded)
 //static
 S32 LLLFSThread::updateClass(U32 ms_elapsed)
 {
-    return sLocal->update((F32)ms_elapsed);
+    return static_cast<S32>(sLocal->update((F32)ms_elapsed));
 }
 
 //static
diff --git a/indra/llfilesystem/lllfsthread.h b/indra/llfilesystem/lllfsthread.h
index 3230c0c2ae..c0ed1931bb 100644
--- a/indra/llfilesystem/lllfsthread.h
+++ b/indra/llfilesystem/lllfsthread.h
@@ -114,7 +114,7 @@ public:
 
     //------------------------------------------------------------------------
 public:
-    LLLFSThread(bool threaded = TRUE);
+    LLLFSThread(bool threaded = true);
     ~LLLFSThread();
 
     // Return a Request handle
@@ -126,7 +126,7 @@ public:
                    Responder* responder);
 
     // static initializers
-    static void initClass(bool local_is_threaded = TRUE); // Setup sLocal
+    static void initClass(bool local_is_threaded = true); // Setup sLocal
     static S32 updateClass(U32 ms_elapsed);
     static void cleanupClass();     // Delete sLocal
 
diff --git a/indra/llimage/llimage.cpp b/indra/llimage/llimage.cpp
index da5b531857..ca8a4199e8 100644
--- a/indra/llimage/llimage.cpp
+++ b/indra/llimage/llimage.cpp
@@ -774,7 +774,7 @@ U8* LLImageBase::getData()
 
 bool LLImageBase::isBufferInvalid() const
 {
-    return mBadBufferAllocation || mData == NULL ;
+    return mBadBufferAllocation || mData == NULL;
 }
 
 void LLImageBase::setSize(S32 width, S32 height, S32 ncomponents)
@@ -850,6 +850,8 @@ LLImageRaw::~LLImageRaw()
 // virtual
 U8* LLImageRaw::allocateData(S32 size)
 {
+    LLImageDataLock lock(this);
+
     U8* res = LLImageBase::allocateData(size);
     return res;
 }
@@ -857,12 +859,16 @@ U8* LLImageRaw::allocateData(S32 size)
 // virtual
 U8* LLImageRaw::reallocateData(S32 size)
 {
+    LLImageDataLock lock(this);
+
     U8* res = LLImageBase::reallocateData(size);
     return res;
 }
 
 void LLImageRaw::releaseData()
 {
+    LLImageDataLock lock(this);
+
     LLImageBase::setSize(0, 0, 0);
     LLImageBase::setDataAndSize(nullptr, 0);
 }
@@ -870,11 +876,15 @@ void LLImageRaw::releaseData()
 // virtual
 void LLImageRaw::deleteData()
 {
+    LLImageDataLock lock(this);
+
     LLImageBase::deleteData();
 }
 
 void LLImageRaw::setDataAndSize(U8 *data, S32 width, S32 height, S8 components)
 {
+    LLImageDataLock lock(this);
+
     if(data == getData())
     {
         return ;
@@ -888,6 +898,8 @@ void LLImageRaw::setDataAndSize(U8 *data, S32 width, S32 height, S8 components)
 
 bool LLImageRaw::resize(U16 width, U16 height, S8 components)
 {
+    LLImageDataLock lock(this);
+
     if ((getWidth() == width) && (getHeight() == height) && (getComponents() == components) && !isBufferInvalid())
     {
         return true;
@@ -903,6 +915,8 @@ bool LLImageRaw::resize(U16 width, U16 height, S8 components)
 bool LLImageRaw::setSubImage(U32 x_pos, U32 y_pos, U32 width, U32 height,
                              const U8 *data, U32 stride, bool reverse_y)
 {
+    LLImageDataLock lock(this);
+
     if (!getData())
     {
         return false;
@@ -930,6 +944,9 @@ bool LLImageRaw::setSubImage(U32 x_pos, U32 y_pos, U32 width, U32 height,
 void LLImageRaw::clear(U8 r, U8 g, U8 b, U8 a)
 {
     llassert( getComponents() <= 4 );
+
+    LLImageDataLock lock(this);
+
     // This is fairly bogus, but it'll do for now.
     if (isBufferInvalid())
     {
@@ -970,6 +987,8 @@ void LLImageRaw::clear(U8 r, U8 g, U8 b, U8 a)
 // Reverses the order of the rows in the image
 void LLImageRaw::verticalFlip()
 {
+    LLImageDataLock lock(this);
+
     S32 row_bytes = getWidth() * getComponents();
     llassert(row_bytes > 0);
     std::vector<U8> line_buffer(row_bytes);
@@ -1009,6 +1028,8 @@ bool LLImageRaw::checkHasTransparentPixels()
 
 bool LLImageRaw::optimizeAwayAlpha()
 {
+    LLImageDataLock lock(this);
+
     if (getComponents() == 4)
     {
         U8* data = getData();
@@ -1074,6 +1095,8 @@ bool LLImageRaw::makeAlpha()
 
 void LLImageRaw::expandToPowerOfTwo(S32 max_dim, bool scale_image)
 {
+    LLImageDataLock lock(this);
+
     // Find new sizes
     S32 new_width  = expandDimToPowerOfTwo(getWidth(), max_dim);
     S32 new_height = expandDimToPowerOfTwo(getHeight(), max_dim);
@@ -1083,6 +1106,8 @@ void LLImageRaw::expandToPowerOfTwo(S32 max_dim, bool scale_image)
 
 void LLImageRaw::contractToPowerOfTwo(S32 max_dim, bool scale_image)
 {
+    LLImageDataLock lock(this);
+
     // Find new sizes
     S32 new_width  = contractDimToPowerOfTwo(getWidth(), MIN_IMAGE_SIZE);
     S32 new_height = contractDimToPowerOfTwo(getHeight(), MIN_IMAGE_SIZE);
@@ -1132,6 +1157,8 @@ S32 LLImageRaw::contractDimToPowerOfTwo(S32 curr_dim, S32 min_dim)
 
 void LLImageRaw::biasedScaleToPowerOfTwo(S32 max_dim)
 {
+    LLImageDataLock lock(this);
+
     // Find new sizes
     S32 new_width  = biasedDimToPowerOfTwo(getWidth(),max_dim);
     S32 new_height = biasedDimToPowerOfTwo(getHeight(),max_dim);
@@ -1139,6 +1166,7 @@ void LLImageRaw::biasedScaleToPowerOfTwo(S32 max_dim)
     scale( new_width, new_height );
 }
 
+// static
 // Calculates (U8)(255*(a/255.f)*(b/255.f) + 0.5f).  Thanks, Jim Blinn!
 inline U8 LLImageRaw::fastFractionalMult( U8 a, U8 b )
 {
@@ -1147,10 +1175,13 @@ inline U8 LLImageRaw::fastFractionalMult( U8 a, U8 b )
 }
 
 
-void LLImageRaw::composite( LLImageRaw* src )
+void LLImageRaw::composite( const LLImageRaw* src )
 {
     LLImageRaw* dst = this;  // Just for clarity.
 
+    LLImageDataSharedLock lockIn(src);
+    LLImageDataLock lockOut(this);
+
     if (!validateSrcAndDst("LLImageRaw::composite", src, dst))
     {
         return;
@@ -1189,12 +1220,14 @@ void LLImageRaw::composite( LLImageRaw* src )
 
 
 // Src and dst can be any size.  Src has 4 components.  Dst has 3 components.
-void LLImageRaw::compositeScaled4onto3(LLImageRaw* src)
+void LLImageRaw::compositeScaled4onto3(const LLImageRaw* src)
 {
     LL_INFOS() << "compositeScaled4onto3" << LL_ENDL;
 
     LLImageRaw* dst = this;  // Just for clarity.
 
+    LLImageDataLock lock(this);
+
     llassert( (4 == src->getComponents()) && (3 == dst->getComponents()) );
 
     S32 temp_data_size = src->getWidth() * dst->getHeight() * src->getComponents();
@@ -1216,14 +1249,16 @@ void LLImageRaw::compositeScaled4onto3(LLImageRaw* src)
 
 
 // Src and dst are same size.  Src has 4 components.  Dst has 3 components.
-void LLImageRaw::compositeUnscaled4onto3( LLImageRaw* src )
+void LLImageRaw::compositeUnscaled4onto3( const LLImageRaw* src )
 {
     LLImageRaw* dst = this;  // Just for clarity.
 
+    LLImageDataLock lock(this);
+
     llassert( (3 == src->getComponents()) || (4 == src->getComponents()) );
     llassert( (src->getWidth() == dst->getWidth()) && (src->getHeight() == dst->getHeight()) );
 
-    U8* src_data = src->getData();
+    const U8* src_data = src->getData();
     U8* dst_data = dst->getData();
     S32 pixels = getWidth() * getHeight();
     while( pixels-- )
@@ -1253,10 +1288,13 @@ void LLImageRaw::compositeUnscaled4onto3( LLImageRaw* src )
 }
 
 
-void LLImageRaw::copyUnscaledAlphaMask( LLImageRaw* src, const LLColor4U& fill)
+void LLImageRaw::copyUnscaledAlphaMask( const LLImageRaw* src, const LLColor4U& fill)
 {
     LLImageRaw* dst = this;  // Just for clarity.
 
+    LLImageDataSharedLock lockIn(src);
+    LLImageDataLock lockOut(this);
+
     if (!validateSrcAndDst("LLImageRaw::copyUnscaledAlphaMask", src, dst))
     {
         return;
@@ -1267,7 +1305,7 @@ void LLImageRaw::copyUnscaledAlphaMask( LLImageRaw* src, const LLColor4U& fill)
     llassert( (src->getWidth() == dst->getWidth()) && (src->getHeight() == dst->getHeight()) );
 
     S32 pixels = getWidth() * getHeight();
-    U8* src_data = src->getData();
+    const U8* src_data = src->getData();
     U8* dst_data = dst->getData();
     for ( S32 i = 0; i < pixels; i++ )
     {
@@ -1284,6 +1322,8 @@ void LLImageRaw::copyUnscaledAlphaMask( LLImageRaw* src, const LLColor4U& fill)
 // Fill the buffer with a constant color
 void LLImageRaw::fill( const LLColor4U& color )
 {
+    LLImageDataLock lock(this);
+
     if (isBufferInvalid())
     {
         LL_WARNS() << "Invalid image buffer" << LL_ENDL;
@@ -1345,16 +1385,21 @@ LLPointer<LLImageRaw> LLImageRaw::duplicate()
         return this; //nobody else refences to this image, no need to duplicate.
     }
 
+    LLImageDataSharedLock lock(this);
+
     //make a duplicate
     LLPointer<LLImageRaw> dup = new LLImageRaw(getData(), getWidth(), getHeight(), getComponents());
     return dup;
 }
 
 // Src and dst can be any size.  Src and dst can each have 3 or 4 components.
-void LLImageRaw::copy(LLImageRaw* src)
+void LLImageRaw::copy(const LLImageRaw* src)
 {
     LLImageRaw* dst = this;  // Just for clarity.
 
+    LLImageDataSharedLock lockIn(src);
+    LLImageDataLock lockOut(this);
+
     if (!validateSrcAndDst("LLImageRaw::copy", src, dst))
     {
         return;
@@ -1400,10 +1445,12 @@ void LLImageRaw::copy(LLImageRaw* src)
 }
 
 // Src and dst are same size.  Src and dst have same number of components.
-void LLImageRaw::copyUnscaled(LLImageRaw* src)
+void LLImageRaw::copyUnscaled(const LLImageRaw* src)
 {
     LLImageRaw* dst = this;  // Just for clarity.
 
+    LLImageDataLock lock(this);
+
     llassert( (1 == src->getComponents()) || (3 == src->getComponents()) || (4 == src->getComponents()) );
     llassert( src->getComponents() == dst->getComponents() );
     llassert( (src->getWidth() == dst->getWidth()) && (src->getHeight() == dst->getHeight()) );
@@ -1413,7 +1460,7 @@ void LLImageRaw::copyUnscaled(LLImageRaw* src)
 
 
 // Src and dst can be any size.  Src has 3 components.  Dst has 4 components.
-void LLImageRaw::copyScaled3onto4(LLImageRaw* src)
+void LLImageRaw::copyScaled3onto4(const LLImageRaw* src)
 {
     llassert( (3 == src->getComponents()) && (4 == getComponents()) );
 
@@ -1425,7 +1472,7 @@ void LLImageRaw::copyScaled3onto4(LLImageRaw* src)
 
 
 // Src and dst can be any size.  Src has 4 components.  Dst has 3 components.
-void LLImageRaw::copyScaled4onto3(LLImageRaw* src)
+void LLImageRaw::copyScaled4onto3(const LLImageRaw* src)
 {
     llassert( (4 == src->getComponents()) && (3 == getComponents()) );
 
@@ -1437,15 +1484,17 @@ void LLImageRaw::copyScaled4onto3(LLImageRaw* src)
 
 
 // Src and dst are same size.  Src has 4 components.  Dst has 3 components.
-void LLImageRaw::copyUnscaled4onto3( LLImageRaw* src )
+void LLImageRaw::copyUnscaled4onto3( const LLImageRaw* src )
 {
     LLImageRaw* dst = this;  // Just for clarity.
 
+    LLImageDataLock lock(this);
+
     llassert( (3 == dst->getComponents()) && (4 == src->getComponents()) );
     llassert( (src->getWidth() == dst->getWidth()) && (src->getHeight() == dst->getHeight()) );
 
     S32 pixels = getWidth() * getHeight();
-    U8* src_data = src->getData();
+    const U8* src_data = src->getData();
     U8* dst_data = dst->getData();
     for( S32 i=0; i<pixels; i++ )
     {
@@ -1459,15 +1508,18 @@ void LLImageRaw::copyUnscaled4onto3( LLImageRaw* src )
 
 
 // Src and dst are same size.  Src has 3 components.  Dst has 4 components.
-void LLImageRaw::copyUnscaled3onto4( LLImageRaw* src )
+void LLImageRaw::copyUnscaled3onto4( const LLImageRaw* src )
 {
     LLImageRaw* dst = this;  // Just for clarity.
+
+    LLImageDataLock lock(this);
+
     llassert( 3 == src->getComponents() );
     llassert( 4 == dst->getComponents() );
     llassert( (src->getWidth() == dst->getWidth()) && (src->getHeight() == dst->getHeight()) );
 
     S32 pixels = getWidth() * getHeight();
-    U8* src_data = src->getData();
+    const U8* src_data = src->getData();
     U8* dst_data = dst->getData();
     for( S32 i=0; i<pixels; i++ )
     {
@@ -1482,10 +1534,13 @@ void LLImageRaw::copyUnscaled3onto4( LLImageRaw* src )
 
 
 // Src and dst can be any size.  Src and dst have same number of components.
-void LLImageRaw::copyScaled( LLImageRaw* src )
+void LLImageRaw::copyScaled( const LLImageRaw* src )
 {
     LLImageRaw* dst = this;  // Just for clarity.
 
+    LLImageDataSharedLock lockIn(src);
+    LLImageDataLock lockOut(this);
+
     if (!validateSrcAndDst("LLImageRaw::copyScaled", src, dst))
     {
         return;
@@ -1527,6 +1582,8 @@ void LLImageRaw::copyScaled( LLImageRaw* src )
 
 bool LLImageRaw::scale( S32 new_width, S32 new_height, bool scale_image_data )
 {
+    LLImageDataLock lock(this);
+
     S32 components = getComponents();
     if (components != 1 && components != 3 && components != 4)
     {
@@ -1613,6 +1670,8 @@ LLPointer<LLImageRaw> LLImageRaw::scaled(S32 new_width, S32 new_height)
 {
     LLPointer<LLImageRaw> result;
 
+    LLImageDataLock lock(this);
+
     S32 components = getComponents();
     if (components != 1 && components != 3 && components != 4)
     {
@@ -1658,7 +1717,7 @@ LLPointer<LLImageRaw> LLImageRaw::scaled(S32 new_width, S32 new_height)
     return result;
 }
 
-void LLImageRaw::copyLineScaled( U8* in, U8* out, S32 in_pixel_len, S32 out_pixel_len, S32 in_pixel_step, S32 out_pixel_step )
+void LLImageRaw::copyLineScaled( const U8* in, U8* out, S32 in_pixel_len, S32 out_pixel_len, S32 in_pixel_step, S32 out_pixel_step )
 {
     const S32 components = getComponents();
     llassert( components >= 1 && components <= 4 );
@@ -1685,7 +1744,7 @@ void LLImageRaw::copyLineScaled( U8* in, U8* out, S32 in_pixel_len, S32 out_pixe
             S32 t0 = x * out_pixel_step * components;
             S32 t1 = index0 * in_pixel_step * components;
             U8* outp = out + t0;
-            U8* inp = in + t1;
+            const U8* inp = in + t1;
             for (S32 i = 0; i < components; ++i)
             {
                 *outp = *inp;
@@ -1773,7 +1832,7 @@ void LLImageRaw::copyLineScaled( U8* in, U8* out, S32 in_pixel_len, S32 out_pixe
     }
 }
 
-void LLImageRaw::compositeRowScaled4onto3( U8* in, U8* out, S32 in_pixel_len, S32 out_pixel_len )
+void LLImageRaw::compositeRowScaled4onto3( const U8* in, U8* out, S32 in_pixel_len, S32 out_pixel_len )
 {
     llassert( getComponents() == 3 );
 
@@ -1869,7 +1928,6 @@ void LLImageRaw::compositeRowScaled4onto3( U8* in, U8* out, S32 in_pixel_len, S3
     }
 }
 
-
 void LLImageRaw::addEmissive(LLImageRaw* src)
 {
     LLImageRaw* dst = this;  // Just for clarity.
@@ -1935,9 +1993,11 @@ void LLImageRaw::addEmissiveScaled(LLImageRaw* src)
     dst->addEmissiveUnscaled(&temp);
 }
 
-
-bool LLImageRaw::validateSrcAndDst(std::string func, LLImageRaw* src, LLImageRaw* dst)
+bool LLImageRaw::validateSrcAndDst(std::string func, const LLImageRaw* src, const LLImageRaw* dst)
 {
+    LLImageDataSharedLock lockIn(src);
+    LLImageDataLock lockOut(dst);
+
     if (!src || !dst || src->isBufferInvalid() || dst->isBufferInvalid())
     {
         LL_WARNS() << func << ": Source: ";
@@ -2171,6 +2231,61 @@ LLImageFormatted* LLImageFormatted::createFromType(S8 codec)
 }
 
 // static
+S8 LLImageFormatted::getCodecFromMimeType(std::string_view mimetype)
+{
+    if (mimetype == "image/bmp")
+    {
+        return IMG_CODEC_BMP;
+    }
+    else if (mimetype == "image/tga")
+    {
+        return IMG_CODEC_TGA;
+    }
+    else if (mimetype == "image/jpeg")
+    {
+        return IMG_CODEC_JPEG;
+    }
+    else if (mimetype == "image/png")
+    {
+        return IMG_CODEC_PNG;
+    }
+    else if (mimetype == "image/j2c")
+    {
+        return IMG_CODEC_J2C;
+    }
+    else if (mimetype == "image/dxt")
+    {
+        return IMG_CODEC_DXT;
+    }
+    return IMG_CODEC_INVALID;
+}
+
+// static
+LLImageFormatted* LLImageFormatted::createFromMimeType(std::string_view mimetype)
+{
+    S8 codec = getCodecFromMimeType(mimetype);
+    return createFromType(codec);
+}
+
+// static
+LLImageFormatted* LLImageFormatted::loadFromMemory(const U8* data_in, U32 size, std::string_view mimetype)
+{
+    LLImageFormatted* image = createFromMimeType(mimetype);
+    if (image)
+    {
+        U8* data = image->allocateData(size);
+        memcpy(data, data_in, size);
+
+        if (!image->updateData())
+        {
+            delete image;
+            image = NULL;
+        }
+    }
+    return image;
+}
+
+// static
 LLImageFormatted* LLImageFormatted::createFromExtension(const std::string& instring)
 {
     std::string exten;
@@ -2250,6 +2365,8 @@ bool LLImageFormatted::decodeChannels(LLImageRaw* raw_image,F32  decode_time, S3
 // virtual
 U8* LLImageFormatted::allocateData(S32 size)
 {
+    LLImageDataLock lock(this);
+
     U8* res = LLImageBase::allocateData(size); // calls deleteData()
     sGlobalFormattedMemory += getDataSize();
     return res;
@@ -2258,6 +2375,8 @@ U8* LLImageFormatted::allocateData(S32 size)
 // virtual
 U8* LLImageFormatted::reallocateData(S32 size)
 {
+    LLImageDataLock lock(this);
+
     sGlobalFormattedMemory -= getDataSize();
     U8* res = LLImageBase::reallocateData(size);
     sGlobalFormattedMemory += getDataSize();
@@ -2267,6 +2386,12 @@ U8* LLImageFormatted::reallocateData(S32 size)
 // virtual
 void LLImageFormatted::deleteData()
 {
+    LLImageDataLock lock(this);
+
+    if (mDecoding)
+    {
+        LL_ERRS() << "LLImageFormatted::deleteData() is called during decoding" << LL_ENDL;
+    }
     sGlobalFormattedMemory -= getDataSize();
     LLImageBase::deleteData();
 }
@@ -2292,6 +2417,8 @@ void LLImageFormatted::sanityCheck()
 
 bool LLImageFormatted::copyData(U8 *data, S32 size)
 {
+    LLImageDataLock lock(this);
+
     if ( data && ((data != getData()) || (size != getDataSize())) )
     {
         deleteData();
@@ -2304,6 +2431,8 @@ bool LLImageFormatted::copyData(U8 *data, S32 size)
 // LLImageFormatted becomes the owner of data
 void LLImageFormatted::setData(U8 *data, S32 size)
 {
+    LLImageDataLock lock(this);
+
     if (data && data != getData())
     {
         deleteData();
@@ -2317,6 +2446,8 @@ void LLImageFormatted::appendData(U8 *data, S32 size)
 {
     if (data)
     {
+        LLImageDataLock lock(this);
+
         if (!getData())
         {
             setData(data, size);
@@ -2334,6 +2465,7 @@ void LLImageFormatted::appendData(U8 *data, S32 size)
 
 //----------------------------------------------------------------------------
 
+
 bool LLImageFormatted::load(const std::string &filename, int load_size)
 {
     resetLastError();
@@ -2358,6 +2490,9 @@ bool LLImageFormatted::load(const std::string &filename, int load_size)
     {
         load_size = file_size;
     }
+
+    LLImageDataLock lock(this);
+
     bool res;
     U8 *data = allocateData(load_size);
     if (data)
@@ -2396,6 +2531,8 @@ bool LLImageFormatted::save(const std::string &filename)
         return false;
     }
 
+    LLImageDataSharedLock lock(this);
+
     S32 result = outfile.write(getData(), getDataSize());
     outfile.close() ;
     return (result != 0);
diff --git a/indra/llimage/llimage.h b/indra/llimage/llimage.h
index 9b16711b85..42eecbb97c 100644
--- a/indra/llimage/llimage.h
+++ b/indra/llimage/llimage.h
@@ -117,6 +117,10 @@ class LLImageBase
 protected:
     virtual ~LLImageBase();
 
+    virtual void deleteData();
+    virtual U8* allocateData(S32 size = -1);
+    virtual U8* reallocateData(S32 size = -1);
+
 public:
     LLImageBase();
 
@@ -126,10 +130,6 @@ public:
         TYPE_AVATAR_BAKE = 1,
     };
 
-    virtual void deleteData();
-    virtual U8* allocateData(S32 size = -1);
-    virtual U8* reallocateData(S32 size = -1);
-
     virtual void dump();
     virtual void sanityCheck();
 
@@ -171,10 +171,27 @@ private:
 
     S8 mComponents;
 
-    bool mBadBufferAllocation ;
-    bool mAllowOverSize ;
+    bool mBadBufferAllocation;
+    bool mAllowOverSize;
+
+private:
+    mutable LLSharedMutex mDataMutex;
+
+public:
+    template<bool SHARED>
+    class DataLock : LLSharedMutexLockTemplate<SHARED>
+    {
+    public:
+        DataLock(const LLImageBase* image)
+        : LLSharedMutexLockTemplate<SHARED>(image ? &image->mDataMutex : nullptr)
+        {
+        }
+    };
 };
 
+using LLImageDataLock = LLImageBase::DataLock<false>;
+using LLImageDataSharedLock = LLImageBase::DataLock<true>;
+
 // Raw representation of an image (used for textures, and other uncompressed formats
 class LLImageRaw : public LLImageBase
 {
@@ -238,42 +255,30 @@ public:
     LLPointer<LLImageRaw> duplicate();
 
     // Src and dst can be any size.  Src and dst can each have 3 or 4 components.
-    void copy( LLImageRaw* src );
+    void copy( const LLImageRaw* src );
 
     // Src and dst are same size.  Src and dst have same number of components.
-    void copyUnscaled( LLImageRaw* src );
+    void copyUnscaled( const LLImageRaw* src );
 
     // Src and dst are same size.  Src has 4 components.  Dst has 3 components.
-    void copyUnscaled4onto3( LLImageRaw* src );
+    void copyUnscaled4onto3( const LLImageRaw* src );
 
     // Src and dst are same size.  Src has 3 components.  Dst has 4 components.
-    void copyUnscaled3onto4( LLImageRaw* src );
+    void copyUnscaled3onto4( const LLImageRaw* src );
 
     // Src and dst are same size.  Src has 1 component.  Dst has 4 components.
     // Alpha component is set to source alpha mask component.
     // RGB components are set to fill color.
-    void copyUnscaledAlphaMask( LLImageRaw* src, const LLColor4U& fill);
+    void copyUnscaledAlphaMask( const LLImageRaw* src, const LLColor4U& fill);
 
     // Src and dst can be any size.  Src and dst have same number of components.
-    void copyScaled( LLImageRaw* src );
-
-    // Src and dst can be any size.  Src has 3 components.  Dst has 4 components.
-    void copyScaled3onto4( LLImageRaw* src );
-
-    // Src and dst can be any size.  Src has 4 components.  Dst has 3 components.
-    void copyScaled4onto3( LLImageRaw* src );
+    void copyScaled( const LLImageRaw* src );
 
 
     // Composite operations
 
     // Src and dst can be any size.  Src and dst can each have 3 or 4 components.
-    void composite( LLImageRaw* src );
-
-    // Src and dst can be any size.  Src has 4 components.  Dst has 3 components.
-    void compositeScaled4onto3( LLImageRaw* src );
-
-    // Src and dst are same size.  Src has 4 components.  Dst has 3 components.
-    void compositeUnscaled4onto3( LLImageRaw* src );
+    void composite( const LLImageRaw* src );
 
     // Emissive operations used by minimap
     // Roughly emulates GLTF emissive texture, but is not GLTF-compliant
@@ -282,13 +287,25 @@ public:
     void addEmissiveScaled(LLImageRaw* src);
     void addEmissiveUnscaled(LLImageRaw* src);
 protected:
+    // Src and dst can be any size.  Src has 4 components.  Dst has 3 components.
+    void compositeScaled4onto3( const LLImageRaw* src );
+
+    // Src and dst are same size.  Src has 4 components.  Dst has 3 components.
+    void compositeUnscaled4onto3( const LLImageRaw* src );
+
+    // Src and dst can be any size.  Src has 3 components.  Dst has 4 components.
+    void copyScaled3onto4( const LLImageRaw* src );
+
+    // Src and dst can be any size.  Src has 4 components.  Dst has 3 components.
+    void copyScaled4onto3( const LLImageRaw* src );
+
     // Create an image from a local file (generally used in tools)
     //bool createFromFile(const std::string& filename, bool j2c_lowest_mip_only = false);
 
-    void copyLineScaled( U8* in, U8* out, S32 in_pixel_len, S32 out_pixel_len, S32 in_pixel_step, S32 out_pixel_step );
-    void compositeRowScaled4onto3( U8* in, U8* out, S32 in_pixel_len, S32 out_pixel_len );
+    void copyLineScaled( const U8* in, U8* out, S32 in_pixel_len, S32 out_pixel_len, S32 in_pixel_step, S32 out_pixel_step );
+    void compositeRowScaled4onto3( const U8* in, U8* out, S32 in_pixel_len, S32 out_pixel_len );
 
-    U8  fastFractionalMult(U8 a,U8 b);
+    static U8 fastFractionalMult(U8 a, U8 b);
 
     void setDataAndSize(U8 *data, S32 width, S32 height, S8 components) ;
 
@@ -296,7 +313,7 @@ public:
     static S32 sRawImageCount;
 
 private:
-    bool validateSrcAndDst(std::string func, LLImageRaw* src, LLImageRaw* dst);
+    static bool validateSrcAndDst(std::string func, const LLImageRaw* src, const LLImageRaw* dst);
 };
 
 // Compressed representation of image.
@@ -305,7 +322,10 @@ class LLImageFormatted : public LLImageBase
 {
 public:
     static LLImageFormatted* createFromType(S8 codec);
+    static LLImageFormatted* loadFromMemory(const U8* data, U32 size, std::string_view mimetype);
     static LLImageFormatted* createFromExtension(const std::string& instring);
+    static LLImageFormatted* createFromMimeType(std::string_view mimetype);
+    static S8 getCodecFromMimeType(std::string_view mimetype);
 
 protected:
     /*virtual*/ ~LLImageFormatted();
diff --git a/indra/llimage/llimagebmp.cpp b/indra/llimage/llimagebmp.cpp
index 08fcdf39da..2a328675c2 100644
--- a/indra/llimage/llimagebmp.cpp
+++ b/indra/llimage/llimagebmp.cpp
@@ -96,6 +96,8 @@ bool LLImageBMP::updateData()
 {
     resetLastError();
 
+    LLImageDataLock lock(this);
+
     // Check to make sure that this instance has been initialized with data
     U8* mdata = getData();
     if (!mdata || (0 == getDataSize()))
@@ -337,8 +339,11 @@ bool LLImageBMP::decode(LLImageRaw* raw_image, F32 decode_time)
 
     resetLastError();
 
+    LLImageDataLock lockIn(this);
+    LLImageDataLock lockOut(raw_image);
+
     // Check to make sure that this instance has been initialized with data
-    U8* mdata = getData();
+    const U8* mdata = getData();
     if (!mdata || (0 == getDataSize()))
     {
         setLastError("llimagebmp trying to decode an image with no data!");
@@ -351,7 +356,7 @@ bool LLImageBMP::decode(LLImageRaw* raw_image, F32 decode_time)
         return false;
     }
 
-    U8* src = mdata + mBitmapOffset;
+    const U8* src = mdata + mBitmapOffset;
     U8* dst = raw_image->getData();
 
     bool success = false;
@@ -398,7 +403,7 @@ U32 LLImageBMP::countTrailingZeros( U32 m )
 }
 
 
-bool LLImageBMP::decodeColorMask16( U8* dst, U8* src )
+bool LLImageBMP::decodeColorMask16( U8* dst, const U8* src )
 {
     llassert( 16 == mBitsPerPixel );
 
@@ -434,7 +439,7 @@ bool LLImageBMP::decodeColorMask16( U8* dst, U8* src )
     return true;
 }
 
-bool LLImageBMP::decodeColorMask32( U8* dst, U8* src )
+bool LLImageBMP::decodeColorMask32( U8* dst, const U8* src )
 {
     // Note: alpha is not supported
 
@@ -478,7 +483,7 @@ bool LLImageBMP::decodeColorMask32( U8* dst, U8* src )
 }
 
 
-bool LLImageBMP::decodeColorTable8( U8* dst, U8* src )
+bool LLImageBMP::decodeColorTable8( U8* dst, const U8* src )
 {
     llassert( (8 == mBitsPerPixel) && (mColorPaletteColors >= 256) );
 
@@ -508,7 +513,7 @@ bool LLImageBMP::decodeColorTable8( U8* dst, U8* src )
 }
 
 
-bool LLImageBMP::decodeTruecolor24( U8* dst, U8* src )
+bool LLImageBMP::decodeTruecolor24( U8* dst, const U8* src )
 {
     llassert( 24 == mBitsPerPixel );
     llassert( 3 == getComponents() );
@@ -542,6 +547,9 @@ bool LLImageBMP::encode(const LLImageRaw* raw_image, F32 encode_time)
 
     resetLastError();
 
+    LLImageDataSharedLock lockIn(raw_image);
+    LLImageDataLock lockOut(this);
+
     S32 src_components = raw_image->getComponents();
     S32 dst_components =  ( src_components < 3 ) ? 1 : 3;
 
diff --git a/indra/llimage/llimagebmp.h b/indra/llimage/llimagebmp.h
index d2cbad1a49..237c3e8d53 100644
--- a/indra/llimage/llimagebmp.h
+++ b/indra/llimage/llimagebmp.h
@@ -45,10 +45,10 @@ public:
     /*virtual*/ bool encode(const LLImageRaw* raw_image, F32 encode_time);
 
 protected:
-    bool        decodeColorTable8( U8* dst, U8* src );
-    bool        decodeColorMask16( U8* dst, U8* src );
-    bool        decodeTruecolor24( U8* dst, U8* src );
-    bool        decodeColorMask32( U8* dst, U8* src );
+    bool        decodeColorTable8( U8* dst, const U8* src );
+    bool        decodeColorMask16( U8* dst, const U8* src );
+    bool        decodeTruecolor24( U8* dst, const U8* src );
+    bool        decodeColorMask32( U8* dst, const U8* src );
 
     U32         countTrailingZeros( U32 m );
 
diff --git a/indra/llimage/llimagedimensionsinfo.cpp b/indra/llimage/llimagedimensionsinfo.cpp
index 997406bb7b..d4efbcfad2 100644
--- a/indra/llimage/llimagedimensionsinfo.cpp
+++ b/indra/llimage/llimagedimensionsinfo.cpp
@@ -201,7 +201,7 @@ bool LLImageDimensionsInfo::getImageDimensionsJpeg()
 
     jpeg_create_decompress  (&cinfo);
     jpeg_stdio_src      (&cinfo, fp);
-    jpeg_read_header    (&cinfo, TRUE);
+    jpeg_read_header    (&cinfo, true);
     cinfo.out_color_space = JCS_RGB;
     jpeg_start_decompress   (&cinfo);
 
diff --git a/indra/llimage/llimagedxt.cpp b/indra/llimage/llimagedxt.cpp
index f75b1a72df..6b960f9077 100644
--- a/indra/llimage/llimagedxt.cpp
+++ b/indra/llimage/llimagedxt.cpp
@@ -176,6 +176,8 @@ bool LLImageDXT::updateData()
 {
     resetLastError();
 
+    LLImageDataLock lock(this);
+
     U8* data = getData();
     S32 data_size = getDataSize();
 
@@ -269,6 +271,9 @@ bool LLImageDXT::decode(LLImageRaw* raw_image, F32 time)
         return false;
     }
 
+    LLImageDataSharedLock lockIn(this);
+    LLImageDataLock lockOut(raw_image);
+
     S32 width = getWidth(), height = getHeight();
     S32 ncomponents = getComponents();
     U8* data = NULL;
@@ -309,6 +314,9 @@ bool LLImageDXT::getMipData(LLPointer<LLImageRaw>& raw, S32 discard)
     {
         LL_ERRS() << "Request for invalid discard level" << LL_ENDL;
     }
+
+    LLImageDataSharedLock lock(this);
+
     U8* data = getData() + getMipOffset(discard);
     S32 width = 0;
     S32 height = 0;
@@ -339,6 +347,8 @@ bool LLImageDXT::encodeDXT(const LLImageRaw* raw_image, F32 time, bool explicit_
         return 0;
     }
 
+    LLImageDataLock lock(this);
+
     S32 width = raw_image->getWidth();
     S32 height = raw_image->getHeight();
 
@@ -430,6 +440,9 @@ bool LLImageDXT::convertToDXR()
         return false;
     }
     mFileFormat = newformat;
+
+    LLImageDataLock lock(this);
+
     S32 width = getWidth(), height = getHeight();
     S32 nmips = calcNumMips(width,height);
     S32 total_bytes = getDataSize();
@@ -463,7 +476,7 @@ bool LLImageDXT::convertToDXR()
 // virtual
 S32 LLImageDXT::calcHeaderSize()
 {
-    return llmax(sizeof(dxtfile_header_old_t), sizeof(dxtfile_header_t));
+    return static_cast<S32>(llmax(sizeof(dxtfile_header_old_t), sizeof(dxtfile_header_t)));
 }
 
 // virtual
diff --git a/indra/llimage/llimagefilter.cpp b/indra/llimage/llimagefilter.cpp
index 1b7835a6ff..0d15906afd 100644
--- a/indra/llimage/llimagefilter.cpp
+++ b/indra/llimage/llimagefilter.cpp
@@ -88,6 +88,8 @@ void LLImageFilter::executeFilter(LLPointer<LLImageRaw> raw_image)
 {
     mImage = raw_image;
 
+    LLImageDataLock lock(mImage);
+
     //std::cout << "Filter : size = " << mFilterData.size() << std::endl;
     for (S32 i = 0; i < mFilterData.size(); ++i)
     {
@@ -779,9 +781,9 @@ void LLImageFilter::filterLinearize(F32 tail, const LLColor3& alpha)
 
     // Compute min and max counts minus tail
     tail = llclampf(tail);
-    S32 total = cumulated_histo[255];
-    S32 min_c = (S32)((F32)(total) * tail);
-    S32 max_c = (S32)((F32)(total) * (1.0 - tail));
+    U32 total = cumulated_histo[255];
+    U32 min_c = (U32)((F32)(total) * tail);
+    U32 max_c = (U32)((F32)(total) * (1.0 - tail));
 
     // Find min and max values
     S32 min_v = 0;
@@ -796,9 +798,9 @@ void LLImageFilter::filterLinearize(F32 tail, const LLColor3& alpha)
     }
 
     // Compute linear lookup table
-    U8 linear_red_lut[256];
-    U8 linear_green_lut[256];
-    U8 linear_blue_lut[256];
+    U8 linear_red_lut[256]{};
+    U8 linear_green_lut[256]{};
+    U8 linear_blue_lut[256]{};
     if (max_v == min_v)
     {
         // Degenerated binary split case
@@ -848,16 +850,16 @@ void LLImageFilter::filterEqualize(S32 nb_classes, const LLColor3& alpha)
     }
 
     // Compute deltas
-    S32 total = cumulated_histo[255];
-    S32 delta_count = total / nb_classes;
-    S32 current_count = delta_count;
-    S32 delta_value = 256 / (nb_classes - 1);
-    S32 current_value = 0;
+    U32 total = cumulated_histo[255];
+    U32 delta_count = total / nb_classes;
+    U32 current_count = delta_count;
+    U32 delta_value = 256 / (nb_classes - 1);
+    U32 current_value = 0;
 
     // Compute equalized lookup table
-    U8 equalize_red_lut[256];
-    U8 equalize_green_lut[256];
-    U8 equalize_blue_lut[256];
+    U8 equalize_red_lut[256]{};
+    U8 equalize_green_lut[256]{};
+    U8 equalize_blue_lut[256]{};
     for (S32 i = 0; i < 256; i++)
     {
         // Blend in current_value with alpha values
diff --git a/indra/llimage/llimagej2c.cpp b/indra/llimage/llimagej2c.cpp
index 5175849ad8..0058b91b0f 100644
--- a/indra/llimage/llimagej2c.cpp
+++ b/indra/llimage/llimagej2c.cpp
@@ -107,6 +107,8 @@ bool LLImageJ2C::updateData()
     bool res = true;
     resetLastError();
 
+    LLImageDataLock lock(this);
+
     // Check to make sure that this instance has been initialized with data
     if (!getData() || (getDataSize() < 16))
     {
@@ -157,22 +159,25 @@ bool LLImageJ2C::decodeChannels(LLImageRaw *raw_imagep, F32 decode_time, S32 fir
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     LLTimer elapsed;
 
-    bool res = true;
-
     resetLastError();
 
-    // Check to make sure that this instance has been initialized with data
-    if (!getData() || (getDataSize() < 16))
+    bool res;
     {
-        setLastError("LLImageJ2C uninitialized");
-        res = true; // done
-    }
-    else
-    {
-        // Update the raw discard level
-        updateRawDiscardLevel();
+        LLImageDataLock lock(this);
+
         mDecoding = true;
-        res = mImpl->decodeImpl(*this, *raw_imagep, decode_time, first_channel, max_channel_count);
+        // Check to make sure that this instance has been initialized with data
+        if (!getData() || (getDataSize() < 16))
+        {
+            setLastError("LLImageJ2C uninitialized");
+            res = true; // done
+        }
+        else
+        {
+            // Update the raw discard level
+            updateRawDiscardLevel();
+            res = mImpl->decodeImpl(*this, *raw_imagep, decode_time, first_channel, max_channel_count);
+        }
     }
 
     if (res)
@@ -181,12 +186,21 @@ bool LLImageJ2C::decodeChannels(LLImageRaw *raw_imagep, F32 decode_time, S32 fir
         {
             // Failed
             raw_imagep->deleteData();
+            res = false;
         }
         else
         {
             mDecoding = false;
         }
     }
+    else
+    {
+        if (mDecoding)
+        {
+            LL_WARNS() << "decodeImpl failed but mDecoding is true" << LL_ENDL;
+            mDecoding = false;
+        }
+    }
 
     if (!mLastError.empty())
     {
@@ -406,9 +420,10 @@ bool LLImageJ2C::loadAndValidate(const std::string &filename)
 
 bool LLImageJ2C::validate(U8 *data, U32 file_size)
 {
-
     resetLastError();
 
+    LLImageDataLock lock(this);
+
     setData(data, file_size);
 
     bool res = updateData();
diff --git a/indra/llimage/llimagejpeg.cpp b/indra/llimage/llimagejpeg.cpp
index 93f1d0cdc4..0e7ec365d4 100644
--- a/indra/llimage/llimagejpeg.cpp
+++ b/indra/llimage/llimagejpeg.cpp
@@ -50,6 +50,8 @@ bool LLImageJPEG::updateData()
 {
     resetLastError();
 
+    LLImageDataLock lock(this);
+
     // Check to make sure that this instance has been initialized with data
     if (!getData() || (0 == getDataSize()))
     {
@@ -189,6 +191,9 @@ bool LLImageJPEG::decode(LLImageRaw* raw_image, F32 decode_time)
 
     resetLastError();
 
+    LLImageDataLock lockIn(this);
+    LLImageDataLock lockOut(raw_image);
+
     // Check to make sure that this instance has been initialized with data
     if (!getData() || (0 == getDataSize()))
     {
@@ -408,6 +413,8 @@ void LLImageJPEG::encodeTermDestination( j_compress_ptr cinfo )
 {
     LLImageJPEG* self = (LLImageJPEG*) cinfo->client_data;
 
+    LLImageDataLock lock(self);
+
     S32 file_bytes = (S32)(self->mOutputBufferSize - cinfo->dest->free_in_buffer);
     self->allocateData(file_bytes);
 
@@ -484,6 +491,9 @@ bool LLImageJPEG::encode( const LLImageRaw* raw_image, F32 encode_time )
 
     resetLastError();
 
+    LLImageDataSharedLock lockIn(raw_image);
+    LLImageDataLock lockOut(this);
+
     switch( raw_image->getComponents() )
     {
     case 1:
diff --git a/indra/llimage/llimagejpeg.h b/indra/llimage/llimagejpeg.h
index 12249ad8c3..add6657117 100644
--- a/indra/llimage/llimagejpeg.h
+++ b/indra/llimage/llimagejpeg.h
@@ -73,8 +73,6 @@ public:
     static void     errorEmitMessage(j_common_ptr cinfo, int msg_level);
     static void     errorOutputMessage(j_common_ptr cinfo);
 
-    static bool     decompress(LLImageJPEG* imagep);
-
 protected:
     U8*             mOutputBuffer;      // temp buffer used during encoding
     S32             mOutputBufferSize;  // bytes in mOuputBuffer
diff --git a/indra/llimage/llimagepng.cpp b/indra/llimage/llimagepng.cpp
index 4d081ce169..d75084cf08 100644
--- a/indra/llimage/llimagepng.cpp
+++ b/indra/llimage/llimagepng.cpp
@@ -54,6 +54,8 @@ bool LLImagePNG::updateData()
 
     try
     {
+        LLImageDataLock lock(this);
+
         // Check to make sure that this instance has been initialized with data
         if (!getData() || (0 == getDataSize()))
         {
@@ -103,6 +105,9 @@ bool LLImagePNG::decode(LLImageRaw* raw_image, F32 decode_time)
 
     resetLastError();
 
+    LLImageDataSharedLock lockIn(this);
+    LLImageDataLock lockOut(raw_image);
+
     // Check to make sure that this instance has been initialized with data
     if (!getData() || (0 == getDataSize()))
     {
@@ -135,6 +140,9 @@ bool LLImagePNG::encode(const LLImageRaw* raw_image, F32 encode_time)
 
     resetLastError();
 
+    LLImageDataSharedLock lockIn(raw_image);
+    LLImageDataLock lockOut(this);
+
     // Image logical size
     setSize(raw_image->getWidth(), raw_image->getHeight(), raw_image->getComponents());
 
diff --git a/indra/llimage/llimagetga.cpp b/indra/llimage/llimagetga.cpp
index adc98cd81d..25232b77aa 100644
--- a/indra/llimage/llimagetga.cpp
+++ b/indra/llimage/llimagetga.cpp
@@ -108,6 +108,8 @@ bool LLImageTGA::updateData()
 {
     resetLastError();
 
+    LLImageDataLock lock(this);
+
     // Check to make sure that this instance has been initialized with data
     if (!getData() || (0 == getDataSize()))
     {
@@ -328,6 +330,9 @@ bool LLImageTGA::decode(LLImageRaw* raw_image, F32 decode_time)
 {
     llassert_always(raw_image);
 
+    LLImageDataSharedLock lockIn(this);
+    LLImageDataLock lockOut(raw_image);
+
     // Check to make sure that this instance has been initialized with data
     if (!getData() || (0 == getDataSize()))
     {
@@ -462,7 +467,7 @@ bool LLImageTGA::decodeTruecolorNonRle( LLImageRaw* raw_image, bool &alpha_opaqu
 
     S32 pixels = getWidth() * getHeight();
 
-    if (pixels * (mIs15Bit ? 2 : getComponents()) > getDataSize() - mDataOffset)
+    if (pixels * (mIs15Bit ? 2 : getComponents()) > getDataSize() - (S32)mDataOffset)
     { //here we have situation when data size in src less than actually needed
         return false;
     }
@@ -644,6 +649,9 @@ bool LLImageTGA::encode(const LLImageRaw* raw_image, F32 encode_time)
 {
     llassert_always(raw_image);
 
+    LLImageDataSharedLock lockIn(raw_image);
+    LLImageDataLock lockOut(this);
+
     deleteData();
 
     setSize(raw_image->getWidth(), raw_image->getHeight(), raw_image->getComponents());
@@ -1062,6 +1070,9 @@ bool LLImageTGA::decodeAndProcess( LLImageRaw* raw_image, F32 domain, F32 weight
     // --+---Input--------------------------------
     //   |
 
+    LLImageDataSharedLock lockIn(this);
+    LLImageDataLock lockOut(raw_image);
+
     if (!getData() || (0 == getDataSize()))
     {
         setLastError("LLImageTGA trying to decode an image with no data!");
@@ -1168,7 +1179,7 @@ bool LLImageTGA::decodeAndProcess( LLImageRaw* raw_image, F32 domain, F32 weight
 // Reads a .tga file and creates an LLImageTGA with its data.
 bool LLImageTGA::loadFile( const std::string& path )
 {
-    S32 len = path.size();
+    auto len = path.size();
     if( len < 5 )
     {
         return false;
@@ -1195,7 +1206,7 @@ bool LLImageTGA::loadFile( const std::string& path )
     }
 
     U8* buffer = allocateData(file_size);
-    S32 bytes_read = fread(buffer, 1, file_size, file);
+    S32 bytes_read = static_cast<S32>(fread(buffer, 1, file_size, file));
     if( bytes_read != file_size )
     {
         deleteData();
diff --git a/indra/llimage/llimageworker.cpp b/indra/llimage/llimageworker.cpp
index 8ce17b5753..bdaef0c653 100644
--- a/indra/llimage/llimageworker.cpp
+++ b/indra/llimage/llimageworker.cpp
@@ -36,7 +36,7 @@ class ImageRequest
 public:
     ImageRequest(const LLPointer<LLImageFormatted>& image,
                  S32 discard,
-                 BOOL needs_aux,
+                 bool needs_aux,
                  const LLPointer<LLImageDecodeThread::Responder>& responder,
                  U32 request_id);
     virtual ~ImageRequest();
@@ -51,15 +51,14 @@ private:
     LLPointer<LLImageFormatted> mFormattedImage;
     S32 mDiscardLevel;
     U32 mRequestId;
-    BOOL mNeedsAux;
+    bool mNeedsAux;
     // output
     LLPointer<LLImageRaw> mDecodedImageRaw;
     LLPointer<LLImageRaw> mDecodedImageAux;
-    BOOL mDecodedRaw;
-    BOOL mDecodedAux;
+    bool mDecodedRaw;
+    bool mDecodedAux;
     LLPointer<LLImageDecodeThread::Responder> mResponder;
-    std::string mErrorString;
-};
+    std::string mErrorString;};
 
 
 //----------------------------------------------------------------------------
@@ -92,12 +91,15 @@ size_t LLImageDecodeThread::getPending()
 LLImageDecodeThread::handle_t LLImageDecodeThread::decodeImage(
     const LLPointer<LLImageFormatted>& image,
     S32 discard,
-    BOOL needs_aux,
+    bool needs_aux,
     const LLPointer<LLImageDecodeThread::Responder>& responder)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
 
     U32 decode_id = ++mDecodeCount;
+    if (decode_id == 0)
+        decode_id = ++mDecodeCount;
+
     // Instantiate the ImageRequest right in the lambda, why not?
     bool posted = mThreadPool->getQueue().post(
         [req = ImageRequest(image, discard, needs_aux, responder, decode_id)]
@@ -128,14 +130,14 @@ LLImageDecodeThread::Responder::~Responder()
 
 ImageRequest::ImageRequest(const LLPointer<LLImageFormatted>& image,
                            S32 discard,
-                           BOOL needs_aux,
+                           bool needs_aux,
                            const LLPointer<LLImageDecodeThread::Responder>& responder,
                            U32 request_id)
     : mFormattedImage(image),
       mDiscardLevel(discard),
       mNeedsAux(needs_aux),
-      mDecodedRaw(FALSE),
-      mDecodedAux(FALSE),
+      mDecodedRaw(false),
+      mDecodedAux(false),
       mResponder(responder),
       mRequestId(request_id)
 {
@@ -155,10 +157,18 @@ ImageRequest::~ImageRequest()
 bool ImageRequest::processRequest()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
+
+    if (mFormattedImage.isNull())
+        return true;
+
     const F32 decode_time_slice = 0.f; //disable time slicing
     bool done = true;
-    mErrorString.clear();
-    if (!mDecodedRaw && mFormattedImage.notNull())
+
+    LLImageDataLock lockFormatted(mFormattedImage);
+    LLImageDataLock lockDecodedRaw(mDecodedImageRaw);
+    LLImageDataLock lockDecodedAux(mDecodedImageAux);
+
+    if (!mDecodedRaw)
     {
         // Decode primary channels
         if (mDecodedImageRaw.isNull())
@@ -166,13 +176,10 @@ bool ImageRequest::processRequest()
             // parse formatted header
             if (!mFormattedImage->updateData())
             {
-                // Pick up errors from updateData
-                mErrorString = LLImage::getLastThreadError();
                 return true; // done (failed)
             }
-            if (0 == (mFormattedImage->getWidth() * mFormattedImage->getHeight() * mFormattedImage->getComponents()))
+            if ((mFormattedImage->getWidth() * mFormattedImage->getHeight() * mFormattedImage->getComponents()) == 0)
             {
-                mErrorString = "Invalid image size";
                 return true; // done (failed)
             }
             if (mDiscardLevel >= 0)
diff --git a/indra/llimage/llimageworker.h b/indra/llimage/llimageworker.h
index 8c43a7c32c..9e01f0bacd 100644
--- a/indra/llimage/llimageworker.h
+++ b/indra/llimage/llimageworker.h
@@ -49,7 +49,7 @@ public:
     // meant to resemble LLQueuedThread::handle_t
     typedef U32 handle_t;
     handle_t decodeImage(const LLPointer<LLImageFormatted>& image,
-                         S32 discard, BOOL needs_aux,
+                         S32 discard, bool needs_aux,
                          const LLPointer<Responder>& responder);
     size_t getPending();
     size_t update(F32 max_time_ms);
diff --git a/indra/llimage/llpngwrapper.cpp b/indra/llimage/llpngwrapper.cpp
index 24b6d34fe2..79c201b1f4 100644
--- a/indra/llimage/llpngwrapper.cpp
+++ b/indra/llimage/llpngwrapper.cpp
@@ -70,7 +70,7 @@ LLPngWrapper::~LLPngWrapper()
 }
 
 // Checks the src for a valid PNG header
-BOOL LLPngWrapper::isValidPng(U8* src)
+bool LLPngWrapper::isValidPng(U8* src)
 {
     const int PNG_BYTES_TO_CHECK = 8;
 
@@ -78,10 +78,10 @@ BOOL LLPngWrapper::isValidPng(U8* src)
     if (sig != 0)
     {
         mErrorMessage = "Invalid or corrupt PNG file";
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 // Called by the libpng library when a fatal encoding or decoding error
@@ -134,7 +134,7 @@ void LLPngWrapper::writeFlush(png_structp png_ptr)
 // The scanline also begins at the bottom of
 // the image (per SecondLife conventions) instead of at the top, so we
 // must assign row-pointers in "reverse" order.
-BOOL LLPngWrapper::readPng(U8* src, S32 dataSize, LLImageRaw* rawImage, ImageInfo *infop)
+bool LLPngWrapper::readPng(U8* src, S32 dataSize, LLImageRaw* rawImage, ImageInfo *infop)
 {
     try
     {
@@ -173,6 +173,8 @@ BOOL LLPngWrapper::readPng(U8* src, S32 dataSize, LLImageRaw* rawImage, ImageInf
         // data space
         if (rawImage != NULL)
         {
+            LLImageDataLock lock(rawImage);
+
             if (!rawImage->resize(static_cast<U16>(mWidth),
                 static_cast<U16>(mHeight), mChannels))
             {
@@ -208,25 +210,25 @@ BOOL LLPngWrapper::readPng(U8* src, S32 dataSize, LLImageRaw* rawImage, ImageInf
     {
         mErrorMessage = msg.what();
         releaseResources();
-        return (FALSE);
+        return (false);
     }
     catch (std::bad_alloc&)
     {
         mErrorMessage = "LLPngWrapper";
         releaseResources();
-        return (FALSE);
+        return (false);
     }
     catch (...)
     {
         mErrorMessage = "LLPngWrapper";
         releaseResources();
         LOG_UNHANDLED_EXCEPTION("");
-        return (FALSE);
+        return (false);
     }
 
     // Clean up and return
     releaseResources();
-    return (TRUE);
+    return (true);
 }
 
 // Do transformations to normalize the input to 8-bpp RGBA
@@ -288,7 +290,7 @@ void LLPngWrapper::updateMetaData()
 
 // Method to write raw image into PNG at dest. The raw scanline begins
 // at the bottom of the image per SecondLife conventions.
-BOOL LLPngWrapper::writePng(const LLImageRaw* rawImage, U8* dest, size_t destSize)
+bool LLPngWrapper::writePng(const LLImageRaw* rawImage, U8* dest, size_t destSize)
 {
     try
     {
@@ -326,10 +328,10 @@ BOOL LLPngWrapper::writePng(const LLImageRaw* rawImage, U8* dest, size_t destSiz
         mWriteInfoPtr = png_create_info_struct(mWritePngPtr);
 
         // Setup write function
-        PngDataInfo dataPtr;
+        PngDataInfo dataPtr{};
         dataPtr.mData = dest;
         dataPtr.mOffset = 0;
-        dataPtr.mDataSize = destSize;
+        dataPtr.mDataSize = static_cast<S32>(destSize);
         png_set_write_fn(mWritePngPtr, &dataPtr, &writeDataCallback, &writeFlush);
 
         // Setup image params
@@ -369,11 +371,11 @@ BOOL LLPngWrapper::writePng(const LLImageRaw* rawImage, U8* dest, size_t destSiz
     {
         mErrorMessage = msg.what();
         releaseResources();
-        return (FALSE);
+        return (false);
     }
 
     releaseResources();
-    return TRUE;
+    return true;
 }
 
 // Cleanup various internal structures
diff --git a/indra/llimage/llpngwrapper.h b/indra/llimage/llpngwrapper.h
index f3c3d57f70..3ada8ac7c2 100644
--- a/indra/llimage/llpngwrapper.h
+++ b/indra/llimage/llpngwrapper.h
@@ -43,9 +43,9 @@ public:
         S8  mComponents;
     };
 
-    BOOL isValidPng(U8* src);
-    BOOL readPng(U8* src, S32 dataSize, LLImageRaw* rawImage, ImageInfo *infop = NULL);
-    BOOL writePng(const LLImageRaw* rawImage, U8* dst, size_t destSize);
+    bool isValidPng(U8* src);
+    bool readPng(U8* src, S32 dataSize, LLImageRaw* rawImage, ImageInfo *infop = NULL);
+    bool writePng(const LLImageRaw* rawImage, U8* dst, size_t destSize);
     U32  getFinalSize();
     const std::string& getErrorMessage();
 
diff --git a/indra/llimage/tests/llimageworker_test.cpp b/indra/llimage/tests/llimageworker_test.cpp
index 2568adf89e..36be885912 100644
--- a/indra/llimage/tests/llimageworker_test.cpp
+++ b/indra/llimage/tests/llimageworker_test.cpp
@@ -151,7 +151,7 @@ namespace tut
         ensure("LLImageDecodeThread: threaded constructor failed", mThread != NULL);
         // Insert something in the queue
         bool done = false;
-        LLImageDecodeThread::handle_t decodeHandle = mThread->decodeImage(NULL, 0, FALSE, new responder_test(&done));
+        LLImageDecodeThread::handle_t decodeHandle = mThread->decodeImage(NULL, 0, false, new responder_test(&done));
         // Verifies we get back a valid handle
         ensure("LLImageDecodeThread:  threaded decodeImage(), returned handle is null", decodeHandle != 0);
         // Wait till the thread has time to handle the work order (though it doesn't do much per work order...)
diff --git a/indra/llimagej2coj/llimagej2coj.cpp b/indra/llimagej2coj/llimagej2coj.cpp
index b5f1df5507..969bf68b6d 100644
--- a/indra/llimagej2coj/llimagej2coj.cpp
+++ b/indra/llimagej2coj/llimagej2coj.cpp
@@ -178,7 +178,7 @@ static OPJ_OFF_T opj_skip(OPJ_OFF_T bytes, void* user_data)
     JPEG2KBase* jpeg_codec = static_cast<JPEG2KBase*>(user_data);
     jpeg_codec->offset += bytes;
 
-    if (jpeg_codec->offset > jpeg_codec->size)
+    if (jpeg_codec->offset > (OPJ_OFF_T)jpeg_codec->size)
     {
         jpeg_codec->offset = jpeg_codec->size;
         // Indicate end of stream
@@ -495,6 +495,9 @@ public:
 
     bool encode(const LLImageRaw& rawImageIn, LLImageJ2C &compressedImageOut)
     {
+        LLImageDataSharedLock lockIn(&rawImageIn);
+        LLImageDataLock lockOut(&compressedImageOut);
+
         setImage(rawImageIn);
 
         encoder = opj_create_compress(OPJ_CODEC_J2K);
@@ -738,6 +741,9 @@ bool LLImageJ2COJ::initEncode(LLImageJ2C &base, LLImageRaw &raw_image, int block
 
 bool LLImageJ2COJ::decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 decode_time, S32 first_channel, S32 max_channel_count)
 {
+    LLImageDataLock lockIn(&base);
+    LLImageDataLock lockOut(&raw_image);
+
     JPEG2KDecode decoder(0);
 
     U32 image_channels = 0;
@@ -792,7 +798,7 @@ bool LLImageJ2COJ::decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 decod
             S32 offset = dest;
             for (S32 y = (height - 1); y >= 0; y--)
             {
-                for (S32 x = 0; x < width; x++)
+                for (U32 x = 0; x < width; x++)
                 {
                     rawp[offset] = image->comps[comp].data[y*comp_width + x];
                     offset += channels;
@@ -825,6 +831,8 @@ bool LLImageJ2COJ::encodeImpl(LLImageJ2C &base, const LLImageRaw &raw_image, con
 
 bool LLImageJ2COJ::getMetadata(LLImageJ2C &base)
 {
+    LLImageDataLock lock(&base);
+
     JPEG2KDecode decode(0);
 
     S32 width = 0;
diff --git a/indra/llinventory/llfoldertype.cpp b/indra/llinventory/llfoldertype.cpp
index 8f968ae2fd..7e1be17ecc 100644
--- a/indra/llinventory/llfoldertype.cpp
+++ b/indra/llinventory/llfoldertype.cpp
@@ -84,47 +84,47 @@ protected:
 LLFolderDictionary::LLFolderDictionary()
 {
     //                                                              TYPE NAME, PROTECTED, AUTOMATIC, SINGLETON
-    addEntry(LLFolderType::FT_TEXTURE,              new FolderEntry("texture",  TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_SOUND,                new FolderEntry("sound",    TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_CALLINGCARD,          new FolderEntry("callcard", TRUE, TRUE, FALSE));
-    addEntry(LLFolderType::FT_LANDMARK,             new FolderEntry("landmark", TRUE, FALSE, FALSE));
-    addEntry(LLFolderType::FT_CLOTHING,             new FolderEntry("clothing", TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_OBJECT,               new FolderEntry("object",   TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_NOTECARD,             new FolderEntry("notecard", TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_ROOT_INVENTORY,       new FolderEntry("root_inv", TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_LSL_TEXT,             new FolderEntry("lsltext",  TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_BODYPART,             new FolderEntry("bodypart", TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_TRASH,                new FolderEntry("trash",    TRUE, FALSE, TRUE));
-    addEntry(LLFolderType::FT_SNAPSHOT_CATEGORY,    new FolderEntry("snapshot", TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_LOST_AND_FOUND,       new FolderEntry("lstndfnd", TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_ANIMATION,            new FolderEntry("animatn",  TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_GESTURE,              new FolderEntry("gesture",  TRUE, TRUE, TRUE));
-    addEntry(LLFolderType::FT_FAVORITE,             new FolderEntry("favorite", TRUE, FALSE, TRUE));
+    addEntry(LLFolderType::FT_TEXTURE,              new FolderEntry("texture",  true, true, true));
+    addEntry(LLFolderType::FT_SOUND,                new FolderEntry("sound",    true, true, true));
+    addEntry(LLFolderType::FT_CALLINGCARD,          new FolderEntry("callcard", true, true, false));
+    addEntry(LLFolderType::FT_LANDMARK,             new FolderEntry("landmark", true, false, false));
+    addEntry(LLFolderType::FT_CLOTHING,             new FolderEntry("clothing", true, true, true));
+    addEntry(LLFolderType::FT_OBJECT,               new FolderEntry("object",   true, true, true));
+    addEntry(LLFolderType::FT_NOTECARD,             new FolderEntry("notecard", true, true, true));
+    addEntry(LLFolderType::FT_ROOT_INVENTORY,       new FolderEntry("root_inv", true, true, true));
+    addEntry(LLFolderType::FT_LSL_TEXT,             new FolderEntry("lsltext",  true, true, true));
+    addEntry(LLFolderType::FT_BODYPART,             new FolderEntry("bodypart", true, true, true));
+    addEntry(LLFolderType::FT_TRASH,                new FolderEntry("trash",    true, false, true));
+    addEntry(LLFolderType::FT_SNAPSHOT_CATEGORY,    new FolderEntry("snapshot", true, true, true));
+    addEntry(LLFolderType::FT_LOST_AND_FOUND,       new FolderEntry("lstndfnd", true, true, true));
+    addEntry(LLFolderType::FT_ANIMATION,            new FolderEntry("animatn",  true, true, true));
+    addEntry(LLFolderType::FT_GESTURE,              new FolderEntry("gesture",  true, true, true));
+    addEntry(LLFolderType::FT_FAVORITE,             new FolderEntry("favorite", true, false, true));
 
     for (S32 ensemble_num = S32(LLFolderType::FT_ENSEMBLE_START); ensemble_num <= S32(LLFolderType::FT_ENSEMBLE_END); ensemble_num++)
     {
-        addEntry(LLFolderType::EType(ensemble_num), new FolderEntry("ensemble", FALSE, FALSE, FALSE)); // Not used
+        addEntry(LLFolderType::EType(ensemble_num), new FolderEntry("ensemble", false, false, false)); // Not used
     }
 
-    addEntry(LLFolderType::FT_CURRENT_OUTFIT,       new FolderEntry("current",  TRUE, FALSE, TRUE));
-    addEntry(LLFolderType::FT_OUTFIT,               new FolderEntry("outfit",   FALSE, FALSE, FALSE));
-    addEntry(LLFolderType::FT_MY_OUTFITS,           new FolderEntry("my_otfts", TRUE, FALSE, TRUE));
+    addEntry(LLFolderType::FT_CURRENT_OUTFIT,       new FolderEntry("current",  true, false, true));
+    addEntry(LLFolderType::FT_OUTFIT,               new FolderEntry("outfit",   false, false, false));
+    addEntry(LLFolderType::FT_MY_OUTFITS,           new FolderEntry("my_otfts", true, false, true));
 
-    addEntry(LLFolderType::FT_MESH,                 new FolderEntry("mesh",     TRUE, FALSE, FALSE)); // Not used?
+    addEntry(LLFolderType::FT_MESH,                 new FolderEntry("mesh",     true, false, false)); // Not used?
 
-    addEntry(LLFolderType::FT_INBOX,                new FolderEntry("inbox",    TRUE, FALSE, TRUE));
-    addEntry(LLFolderType::FT_OUTBOX,               new FolderEntry("outbox",   TRUE, FALSE, FALSE));
+    addEntry(LLFolderType::FT_INBOX,                new FolderEntry("inbox",    true, false, true));
+    addEntry(LLFolderType::FT_OUTBOX,               new FolderEntry("outbox",   true, false, false));
 
-    addEntry(LLFolderType::FT_BASIC_ROOT,           new FolderEntry("basic_rt", TRUE, FALSE, FALSE));
+    addEntry(LLFolderType::FT_BASIC_ROOT,           new FolderEntry("basic_rt", true, false, false));
 
-    addEntry(LLFolderType::FT_MARKETPLACE_LISTINGS, new FolderEntry("merchant", FALSE, FALSE, FALSE));
-    addEntry(LLFolderType::FT_MARKETPLACE_STOCK,    new FolderEntry("stock",    FALSE, FALSE, FALSE));
-    addEntry(LLFolderType::FT_MARKETPLACE_VERSION,  new FolderEntry("version",  FALSE, FALSE, FALSE));
+    addEntry(LLFolderType::FT_MARKETPLACE_LISTINGS, new FolderEntry("merchant", false, false, false));
+    addEntry(LLFolderType::FT_MARKETPLACE_STOCK,    new FolderEntry("stock",    false, false, false));
+    addEntry(LLFolderType::FT_MARKETPLACE_VERSION,  new FolderEntry("version",  false, false, false));
 
-    addEntry(LLFolderType::FT_SETTINGS,             new FolderEntry("settings", TRUE, FALSE, TRUE));
-    addEntry(LLFolderType::FT_MATERIAL,             new FolderEntry("material", TRUE, FALSE, TRUE));
+    addEntry(LLFolderType::FT_SETTINGS,             new FolderEntry("settings", true, false, true));
+    addEntry(LLFolderType::FT_MATERIAL,             new FolderEntry("material", true, false, true));
 
-    addEntry(LLFolderType::FT_NONE,                 new FolderEntry("-1",       FALSE, FALSE, FALSE));
+    addEntry(LLFolderType::FT_NONE,                 new FolderEntry("-1",       false, false, false));
 };
 
 // static
diff --git a/indra/llinventory/llinventory.cpp b/indra/llinventory/llinventory.cpp
index d7e655d537..082d8b2f9f 100644
--- a/indra/llinventory/llinventory.cpp
+++ b/indra/llinventory/llinventory.cpp
@@ -133,7 +133,7 @@ LLAssetType::EType LLInventoryObject::getActualType() const
     return mType;
 }
 
-BOOL LLInventoryObject::getIsLinkType() const
+bool LLInventoryObject::getIsLinkType() const
 {
     return LLAssetType::lookupIsLinkType(mType);
 }
@@ -182,7 +182,7 @@ void LLInventoryObject::setType(LLAssetType::EType type)
 
 
 // virtual
-BOOL LLInventoryObject::importLegacyStream(std::istream& input_stream)
+bool LLInventoryObject::importLegacyStream(std::istream& input_stream)
 {
     // *NOTE: Changing the buffer size will require changing the scanf
     // calls below.
@@ -265,10 +265,10 @@ BOOL LLInventoryObject::importLegacyStream(std::istream& input_stream)
                     << "' in LLInventoryObject::importLegacyStream() for object " << mUUID << LL_ENDL;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLInventoryObject::exportLegacyStream(std::ostream& output_stream, BOOL) const
+bool LLInventoryObject::exportLegacyStream(std::ostream& output_stream, bool) const
 {
     std::string uuid_str;
     output_stream <<  "\tinv_object\t0\n\t{\n";
@@ -279,16 +279,16 @@ BOOL LLInventoryObject::exportLegacyStream(std::ostream& output_stream, BOOL) co
     output_stream << "\t\ttype\t" << LLAssetType::lookup(mType) << "\n";
     output_stream << "\t\tname\t" << mName.c_str() << "|\n";
     output_stream << "\t}\n";
-    return TRUE;
+    return true;
 }
 
-void LLInventoryObject::updateParentOnServer(BOOL) const
+void LLInventoryObject::updateParentOnServer(bool) const
 {
     // don't do nothin'
     LL_WARNS() << "LLInventoryObject::updateParentOnServer() called.  Doesn't do anything." << LL_ENDL;
 }
 
-void LLInventoryObject::updateServer(BOOL) const
+void LLInventoryObject::updateServer(bool) const
 {
     // don't do nothin'
     LL_WARNS() << "LLInventoryObject::updateServer() called.  Doesn't do anything." << LL_ENDL;
@@ -575,7 +575,7 @@ void LLInventoryItem::packMessage(LLMessageSystem* msg) const
 }
 
 // virtual
-BOOL LLInventoryItem::unpackMessage(LLMessageSystem* msg, const char* block, S32 block_num)
+bool LLInventoryItem::unpackMessage(LLMessageSystem* msg, const char* block, S32 block_num)
 {
     msg->getUUIDFast(block, _PREHASH_ItemID, mUUID, block_num);
     msg->getUUIDFast(block, _PREHASH_FolderID, mParentUUID, block_num);
@@ -611,13 +611,13 @@ BOOL LLInventoryItem::unpackMessage(LLMessageSystem* msg, const char* block, S32
     if(local_crc == remote_crc)
     {
         LL_DEBUGS() << "crc matches" << LL_ENDL;
-        return TRUE;
+        return true;
     }
     else
     {
         LL_WARNS() << "inventory crc mismatch: local=" << std::hex << local_crc
                 << " remote=" << remote_crc << std::dec << LL_ENDL;
-        return FALSE;
+        return false;
     }
 #else
     return (local_crc == remote_crc);
@@ -625,7 +625,7 @@ BOOL LLInventoryItem::unpackMessage(LLMessageSystem* msg, const char* block, S32
 }
 
 // virtual
-BOOL LLInventoryItem::importLegacyStream(std::istream& input_stream)
+bool LLInventoryItem::importLegacyStream(std::istream& input_stream)
 {
     // *NOTE: Changing the buffer size will require changing the scanf
     // calls below.
@@ -633,7 +633,7 @@ BOOL LLInventoryItem::importLegacyStream(std::istream& input_stream)
     char keyword[MAX_STRING];   /* Flawfinder: ignore */
     char valuestr[MAX_STRING];  /* Flawfinder: ignore */
     char junk[MAX_STRING];  /* Flawfinder: ignore */
-    BOOL success = TRUE;
+    bool success = true;
 
     keyword[0] = '\0';
     valuestr[0] = '\0';
@@ -673,7 +673,7 @@ BOOL LLInventoryItem::importLegacyStream(std::istream& input_stream)
             // the permissions. Thus, we read that out, and fix legacy
             // objects. It's possible this op would fail, but it
             // should pick up the vast majority of the tasks.
-            BOOL has_perm_mask = FALSE;
+            bool has_perm_mask = false;
             U32 perm_mask = 0;
             success = mSaleInfo.importLegacyStream(input_stream, has_perm_mask, perm_mask);
             if(has_perm_mask)
@@ -815,7 +815,7 @@ BOOL LLInventoryItem::importLegacyStream(std::istream& input_stream)
     return success;
 }
 
-BOOL LLInventoryItem::exportLegacyStream(std::ostream& output_stream, BOOL include_asset_key) const
+bool LLInventoryItem::exportLegacyStream(std::ostream& output_stream, bool include_asset_key) const
 {
     std::string uuid_str;
     output_stream << "\tinv_item\t0\n\t{\n";
@@ -874,7 +874,7 @@ BOOL LLInventoryItem::exportLegacyStream(std::ostream& output_stream, BOOL inclu
     output_stream << "\t\tdesc\t" << mDescription.c_str() << "|\n";
     output_stream << "\t\tcreation_date\t" << mCreationDate << "\n";
     output_stream << "\t}\n";
-    return TRUE;
+    return true;
 }
 
 LLSD LLInventoryItem::asLLSD() const
@@ -994,7 +994,7 @@ bool LLInventoryItem::fromLLSD(const LLSD& sd, bool is_new)
             // the permissions. Thus, we read that out, and fix legacy
             // objects. It's possible this op would fail, but it
             // should pick up the vast majority of the tasks.
-            BOOL has_perm_mask = FALSE;
+            bool has_perm_mask = false;
             U32  perm_mask     = 0;
             if (!mSaleInfo.fromLLSD(i->second, has_perm_mask, perm_mask))
             {
@@ -1278,7 +1278,7 @@ void LLInventoryCategory::unpackMessage(LLMessageSystem* msg,
 }
 
 // virtual
-BOOL LLInventoryCategory::importLegacyStream(std::istream& input_stream)
+bool LLInventoryCategory::importLegacyStream(std::istream& input_stream)
 {
     // *NOTE: Changing the buffer size will require changing the scanf
     // calls below.
@@ -1369,10 +1369,10 @@ BOOL LLInventoryCategory::importLegacyStream(std::istream& input_stream)
                     << "' in inventory import category "  << mUUID << LL_ENDL;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLInventoryCategory::exportLegacyStream(std::ostream& output_stream, BOOL) const
+bool LLInventoryCategory::exportLegacyStream(std::ostream& output_stream, bool) const
 {
     std::string uuid_str;
     output_stream << "\tinv_category\t0\n\t{\n";
@@ -1393,7 +1393,7 @@ BOOL LLInventoryCategory::exportLegacyStream(std::ostream& output_stream, BOOL)
         output_stream << "|\n";
     }
     output_stream << "\t}\n";
-    return TRUE;
+    return true;
 }
 
 LLSD LLInventoryCategory::exportLLSD() const
diff --git a/indra/llinventory/llinventory.h b/indra/llinventory/llinventory.h
index 1039fe7b72..e63f2deba7 100644
--- a/indra/llinventory/llinventory.h
+++ b/indra/llinventory/llinventory.h
@@ -74,7 +74,7 @@ public:
     virtual const std::string& getName() const;
     virtual LLAssetType::EType getType() const;
     LLAssetType::EType getActualType() const; // bypasses indirection for linked items
-    BOOL getIsLinkType() const;
+    bool getIsLinkType() const;
     virtual time_t getCreationDate() const;
 
     //--------------------------------------------------------------------
@@ -98,11 +98,11 @@ public:
     //   between simulator and viewer.
     //--------------------------------------------------------------------
 
-    virtual BOOL importLegacyStream(std::istream& input_stream);
-    virtual BOOL exportLegacyStream(std::ostream& output_stream, BOOL include_asset_key = TRUE) const;
+    virtual bool importLegacyStream(std::istream& input_stream);
+    virtual bool exportLegacyStream(std::ostream& output_stream, bool include_asset_key = true) const;
 
-    virtual void updateParentOnServer(BOOL) const;
-    virtual void updateServer(BOOL) const;
+    virtual void updateParentOnServer(bool) const;
+    virtual void updateServer(bool) const;
 
     //--------------------------------------------------------------------
     // Member Variables
@@ -190,17 +190,17 @@ public:
     // Assumes you have already called nextBlock().
     virtual void packMessage(LLMessageSystem* msg) const;
 
-    // Returns TRUE if the inventory item came through the network correctly.
+    // Returns true if the inventory item came through the network correctly.
     // Uses a simple crc check which is defeatable, but we want to detect
     // network mangling somehow.
-    virtual BOOL unpackMessage(LLMessageSystem* msg, const char* block, S32 block_num = 0);
+    virtual bool unpackMessage(LLMessageSystem* msg, const char* block, S32 block_num = 0);
 
     //--------------------------------------------------------------------
     // File Support
     //--------------------------------------------------------------------
 public:
-    virtual BOOL importLegacyStream(std::istream& input_stream);
-    virtual BOOL exportLegacyStream(std::ostream& output_stream, BOOL include_asset_key = TRUE) const;
+    virtual bool importLegacyStream(std::istream& input_stream);
+    virtual bool exportLegacyStream(std::ostream& output_stream, bool include_asset_key = true) const;
 
     //--------------------------------------------------------------------
     // Helper Functions
@@ -267,8 +267,8 @@ public:
     // File Support
     //--------------------------------------------------------------------
 public:
-    virtual BOOL importLegacyStream(std::istream& input_stream);
-    virtual BOOL exportLegacyStream(std::ostream& output_stream, BOOL include_asset_key = TRUE) const;
+    virtual bool importLegacyStream(std::istream& input_stream);
+    virtual bool exportLegacyStream(std::ostream& output_stream, bool include_asset_key = true) const;
 
     LLSD exportLLSD() const;
     bool importLLSD(const LLSD& cat_data);
diff --git a/indra/llinventory/llinventorytype.cpp b/indra/llinventory/llinventorytype.cpp
index 303dd8b711..3dd1a5638d 100644
--- a/indra/llinventory/llinventorytype.cpp
+++ b/indra/llinventory/llinventorytype.cpp
@@ -83,6 +83,8 @@ LLInventoryDictionary::LLInventoryDictionary()
     addEntry(LLInventoryType::IT_ANIMATION,           new InventoryEntry("animation", "animation",     1, LLAssetType::AT_ANIMATION));
     addEntry(LLInventoryType::IT_GESTURE,             new InventoryEntry("gesture",   "gesture",       1, LLAssetType::AT_GESTURE));
     addEntry(LLInventoryType::IT_MESH,                new InventoryEntry("mesh",      "mesh",          1, LLAssetType::AT_MESH));
+    addEntry(LLInventoryType::IT_GLTF,                new InventoryEntry("gltf",      "gltf",          1, LLAssetType::AT_GLTF));
+    addEntry(LLInventoryType::IT_GLTF_BIN,            new InventoryEntry("glbin",     "glbin",         1, LLAssetType::AT_GLTF_BIN));
     addEntry(LLInventoryType::IT_WIDGET,              new InventoryEntry("widget",    "widget",        1, LLAssetType::AT_WIDGET));
     addEntry(LLInventoryType::IT_PERSON,              new InventoryEntry("person",    "person",        1, LLAssetType::AT_PERSON));
     addEntry(LLInventoryType::IT_SETTINGS,            new InventoryEntry("settings",  "settings",      1, LLAssetType::AT_SETTINGS));
@@ -153,9 +155,12 @@ DEFAULT_ASSET_FOR_INV_TYPE[LLAssetType::AT_COUNT] =
     LLInventoryType::IT_NONE,           // 52   AT_RESERVED_3
     LLInventoryType::IT_NONE,           // 53   AT_RESERVED_4
     LLInventoryType::IT_NONE,           // 54   AT_RESERVED_5
+    LLInventoryType::IT_NONE,           // 55   AT_RESERVED_6
 
-    LLInventoryType::IT_SETTINGS,       // 55   AT_SETTINGS <- why doesnt this match the value in llassettype.h? -brad
+    LLInventoryType::IT_SETTINGS,       // 56   AT_SETTINGS
     LLInventoryType::IT_MATERIAL,       // 57   AT_MATERIAL
+    LLInventoryType::IT_GLTF,           // 58   AT_GLTF
+    LLInventoryType::IT_GLTF_BIN,       // 59   AT_GLTF_BIN
 };
 
 // static
diff --git a/indra/llinventory/llinventorytype.h b/indra/llinventory/llinventorytype.h
index fd80a0be04..c90f8aa107 100644
--- a/indra/llinventory/llinventorytype.h
+++ b/indra/llinventory/llinventorytype.h
@@ -66,7 +66,9 @@ public:
         IT_PERSON = 24,
         IT_SETTINGS = 25,
         IT_MATERIAL = 26,
-        IT_COUNT = 27,
+        IT_GLTF = 27,
+        IT_GLTF_BIN = 28,
+        IT_COUNT = 29,
 
         IT_UNKNOWN = 255,
         IT_NONE = -1
diff --git a/indra/llinventory/llnotecard.cpp b/indra/llinventory/llnotecard.cpp
index cc40a0c6b8..d73e9c8966 100644
--- a/indra/llinventory/llnotecard.cpp
+++ b/indra/llinventory/llnotecard.cpp
@@ -162,25 +162,25 @@ bool LLNotecard::importStream(std::istream& str)
     if(str.fail())
     {
         LL_WARNS() << "Invalid Linden text file header " << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if( 1 != mVersion && 2 != mVersion)
     {
         LL_WARNS() << "Invalid Linden text file version: " << mVersion << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     str >> std::ws >> "{\n";
     if(str.fail())
     {
         LL_WARNS() << "Invalid Linden text file format" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if(!importEmbeddedItemsStream(str))
     {
-        return FALSE;
+        return false;
     }
 
     char line_buf[STD_STRING_BUF_SIZE]; /* Flawfinder: ignore */
@@ -188,7 +188,7 @@ bool LLNotecard::importStream(std::istream& str)
     if(str.fail())
     {
         LL_WARNS() << "Invalid Linden text length field" << LL_ENDL;
-        return FALSE;
+        return false;
     }
     line_buf[STD_STRING_STR_LEN] = '\0';
 
@@ -196,23 +196,23 @@ bool LLNotecard::importStream(std::istream& str)
     if( 1 != sscanf(line_buf, "Text length %d", &text_len) )
     {
         LL_WARNS() << "Invalid Linden text length field" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if(text_len > mMaxText || text_len < 0)
     {
         LL_WARNS() << "Invalid Linden text length: " << text_len << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
-    BOOL success = TRUE;
+    bool success = true;
 
     char* text = new char[text_len + 1];
     fullread(str, text, text_len);
     if(str.fail())
     {
         LL_WARNS() << "Invalid Linden text: text shorter than text length: " << text_len << LL_ENDL;
-        success = FALSE;
+        success = false;
     }
     text[text_len] = '\0';
 
@@ -247,7 +247,7 @@ bool LLNotecard::exportEmbeddedItemsStream( std::ostream& out_stream )
             out_stream << llformat("ext char index %d\n", idx  );
             if( !item->exportLegacyStream( out_stream ) )
             {
-                return FALSE;
+                return false;
             }
             out_stream << "}\n";
         }
@@ -256,7 +256,7 @@ bool LLNotecard::exportEmbeddedItemsStream( std::ostream& out_stream )
 
     out_stream << "}\n";
 
-    return TRUE;
+    return true;
 }
 
 bool LLNotecard::exportStream( std::ostream& out_stream )
@@ -266,14 +266,14 @@ bool LLNotecard::exportStream( std::ostream& out_stream )
 
     if( !exportEmbeddedItemsStream( out_stream ) )
     {
-        return FALSE;
+        return false;
     }
 
     out_stream << llformat("Text length %d\n", mText.length() );
     out_stream << mText;
     out_stream << "}\n";
 
-    return TRUE;
+    return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////
diff --git a/indra/llinventory/llparcel.cpp b/indra/llinventory/llparcel.cpp
index 0cb9070ff6..ef6ddb3cab 100644
--- a/indra/llinventory/llparcel.cpp
+++ b/indra/llinventory/llparcel.cpp
@@ -119,15 +119,15 @@ LLParcel::ECategory category_ui_string_to_category(const std::string& s);
 
 LLParcel::LLParcel()
 {
-    init(LLUUID::null, TRUE, FALSE, FALSE, 0, 0, 0, 0, 0, 1.f, 0);
+    init(LLUUID::null, true, false, false, 0, 0, 0, 0, 0, 1.f, 0);
 }
 
 
 LLParcel::LLParcel(const LLUUID &owner_id,
-                   BOOL modify, BOOL terraform, BOOL damage,
+                   bool modify, bool terraform, bool damage,
                    time_t claim_date, S32 claim_price_per_meter,
                    S32 rent_price_per_meter, S32 area, S32 sim_object_limit, F32 parcel_object_bonus,
-                   BOOL is_group_owned)
+                   bool is_group_owned)
 {
     init( owner_id, modify, terraform, damage, claim_date,
           claim_price_per_meter, rent_price_per_meter, area, sim_object_limit, parcel_object_bonus,
@@ -142,10 +142,10 @@ LLParcel::~LLParcel()
 }
 
 void LLParcel::init(const LLUUID &owner_id,
-                    BOOL modify, BOOL terraform, BOOL damage,
+                    bool modify, bool terraform, bool damage,
                     time_t claim_date, S32 claim_price_per_meter,
                     S32 rent_price_per_meter, S32 area, S32 sim_object_limit, F32 parcel_object_bonus,
-                    BOOL is_group_owned)
+                    bool is_group_owned)
 {
     mID.setNull();
     mOwnerID            = owner_id;
@@ -172,7 +172,7 @@ void LLParcel::init(const LLUUID &owner_id,
     mSaleTimerExpires.stop();
     mGraceExtension = 0;
     //mExpireAction = STEA_REVERT;
-    //mRecordTransaction = FALSE;
+    //mRecordTransaction = false;
 
     mAuctionID = 0;
     mInEscrow = false;
@@ -191,13 +191,13 @@ void LLParcel::init(const LLUUID &owner_id,
     setMediaType(LLStringUtil::null);
     mMediaID.setNull();
     mMediaAutoScale = 0;
-    mMediaLoop = TRUE;
+    mMediaLoop = 1;
     mMediaWidth = 0;
     mMediaHeight = 0;
     setMediaCurrentURL(LLStringUtil::null);
-    mMediaAllowNavigate = TRUE;
+    mMediaAllowNavigate = 1;
     mMediaURLTimeout = 0.0f;
-    mMediaPreventCameraZoom = FALSE;
+    mMediaPreventCameraZoom = 0;
 
     mGroupID.setNull();
 
@@ -219,26 +219,26 @@ void LLParcel::init(const LLUUID &owner_id,
     setSelectedPrimCount(0);
     setTempPrimCount(0);
     setCleanOtherTime(0);
-    setRegionPushOverride(FALSE);
-    setRegionDenyAnonymousOverride(FALSE);
-    setRegionDenyAgeUnverifiedOverride(FALSE);
+    setRegionPushOverride(false);
+    setRegionDenyAnonymousOverride(false);
+    setRegionDenyAgeUnverifiedOverride(false);
     setParcelPrimBonus(parcel_object_bonus);
 
     setPreviousOwnerID(LLUUID::null);
-    setPreviouslyGroupOwned(FALSE);
+    setPreviouslyGroupOwned(false);
 
-    setSeeAVs(TRUE);
-    setAllowGroupAVSounds(TRUE);
-    setAllowAnyAVSounds(TRUE);
-    setHaveNewParcelLimitData(FALSE);
+    setSeeAVs(true);
+    setAllowGroupAVSounds(true);
+    setAllowAnyAVSounds(true);
+    setHaveNewParcelLimitData(false);
 
-    setRegionAllowEnvironmentOverride(FALSE);
+    setRegionAllowEnvironmentOverride(false);
     setParcelEnvironmentVersion(INVALID_PARCEL_ENVIRONMENT_VERSION);
 
     setObscureMOAP(false);
 }
 
-void LLParcel::overrideOwner(const LLUUID& owner_id, BOOL is_group_owned)
+void LLParcel::overrideOwner(const LLUUID& owner_id, bool is_group_owned)
 {
     // Override with system permission (LLUUID::null)
     // Overridden parcels have no group
@@ -352,7 +352,7 @@ void LLParcel::setAllParcelFlags(U32 flags)
     mParcelFlags = flags;
 }
 
-void LLParcel::setParcelFlag(U32 flag, BOOL b)
+void LLParcel::setParcelFlag(U32 flag, bool b)
 {
     if (b)
     {
@@ -365,25 +365,25 @@ void LLParcel::setParcelFlag(U32 flag, BOOL b)
 }
 
 
-BOOL LLParcel::allowModifyBy(const LLUUID &agent_id, const LLUUID &group_id) const
+bool LLParcel::allowModifyBy(const LLUUID &agent_id, const LLUUID &group_id) const
 {
     if (agent_id == LLUUID::null)
     {
         // system always can enter
-        return TRUE;
+        return true;
     }
     else if (isPublic())
     {
-        return TRUE;
+        return true;
     }
     else if (agent_id == mOwnerID)
     {
         // owner can always perform operations
-        return TRUE;
+        return true;
     }
     else if (mParcelFlags & PF_CREATE_OBJECTS)
     {
-        return TRUE;
+        return true;
     }
     else if ((mParcelFlags & PF_CREATE_GROUP_OBJECTS)
              && group_id.notNull() )
@@ -391,22 +391,22 @@ BOOL LLParcel::allowModifyBy(const LLUUID &agent_id, const LLUUID &group_id) con
         return (getGroupID() == group_id);
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLParcel::allowTerraformBy(const LLUUID &agent_id) const
+bool LLParcel::allowTerraformBy(const LLUUID &agent_id) const
 {
     if (agent_id == LLUUID::null)
     {
         // system always can enter
-        return TRUE;
+        return true;
     }
     else if(OS_LEASED == mStatus)
     {
         if(agent_id == mOwnerID)
         {
             // owner can modify leased land
-            return TRUE;
+            return true;
         }
         else
         {
@@ -416,7 +416,7 @@ BOOL LLParcel::allowTerraformBy(const LLUUID &agent_id) const
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -441,7 +441,7 @@ void LLParcel::setDiscountRate(F32 rate)
 // File input and output
 //-----------------------------------------------------------
 
-BOOL LLParcel::importAccessEntry(std::istream& input_stream, LLAccessEntry* entry)
+bool LLParcel::importAccessEntry(std::istream& input_stream, LLAccessEntry* entry)
 {
     skip_to_end_of_next_keyword("{", input_stream);
     while (input_stream.good())
@@ -561,9 +561,9 @@ void LLParcel::unpackMessage(LLMessageSystem* msg)
     msg->getStringFast( _PREHASH_ParcelData,_PREHASH_MediaURL, buffer );
     setMediaURL(buffer);
 
-    BOOL see_avs = TRUE;            // All default to true for legacy server behavior
-    BOOL any_av_sounds = TRUE;
-    BOOL group_av_sounds = TRUE;
+    bool see_avs = true;            // All default to true for legacy server behavior
+    bool any_av_sounds = true;
+    bool group_av_sounds = true;
     bool have_new_parcel_limit_data = (msg->getSizeFast(_PREHASH_ParcelData, _PREHASH_SeeAVs) > 0);     // New version of server should send all 3 of these values
     have_new_parcel_limit_data &= (msg->getSizeFast(_PREHASH_ParcelData, _PREHASH_AnyAVSounds) > 0);
     have_new_parcel_limit_data &= (msg->getSizeFast(_PREHASH_ParcelData, _PREHASH_GroupAVSounds) > 0);
@@ -728,21 +728,21 @@ void LLParcel::expirePasses(S32 now)
 bool LLParcel::operator==(const LLParcel &rhs) const
 {
     if (mOwnerID != rhs.mOwnerID)
-        return FALSE;
+        return false;
 
     if (mParcelFlags != rhs.mParcelFlags)
-        return FALSE;
+        return false;
 
     if (mClaimDate != rhs.mClaimDate)
-        return FALSE;
+        return false;
 
     if (mClaimPricePerMeter != rhs.mClaimPricePerMeter)
-        return FALSE;
+        return false;
 
     if (mRentPricePerMeter != rhs.mRentPricePerMeter)
-        return FALSE;
+        return false;
 
-    return TRUE;
+    return true;
 }
 
 // Calculate rent
@@ -787,16 +787,16 @@ void LLParcel::extendAABB(const LLVector3& box_min, const LLVector3& box_max)
     }
 }
 
-BOOL LLParcel::addToAccessList(const LLUUID& agent_id, S32 time)
+bool LLParcel::addToAccessList(const LLUUID& agent_id, S32 time)
 {
     if (mAccessList.size() >= (U32) PARCEL_MAX_ACCESS_LIST)
     {
-        return FALSE;
+        return false;
     }
     if (agent_id == getOwnerID())
     {
         // Can't add owner to these lists
-        return FALSE;
+        return false;
     }
     LLAccessEntry::map::iterator itor = mAccessList.begin();
     while (itor != mAccessList.end())
@@ -811,7 +811,7 @@ BOOL LLParcel::addToAccessList(const LLUUID& agent_id, S32 time)
             else
             {
                 // existing one expires later
-                return FALSE;
+                return false;
             }
         }
         else
@@ -825,20 +825,20 @@ BOOL LLParcel::addToAccessList(const LLUUID& agent_id, S32 time)
     new_entry.mTime  = time;
     new_entry.mFlags = 0x0;
     mAccessList[new_entry.mID] = new_entry;
-    return TRUE;
+    return true;
 }
 
-BOOL LLParcel::addToBanList(const LLUUID& agent_id, S32 time)
+bool LLParcel::addToBanList(const LLUUID& agent_id, S32 time)
 {
     if (mBanList.size() >= (U32) PARCEL_MAX_ACCESS_LIST)
     {
         // Not using ban list, so not a rational thing to do
-        return FALSE;
+        return false;
     }
     if (agent_id == getOwnerID())
     {
         // Can't add owner to these lists
-        return FALSE;
+        return false;
     }
 
     LLAccessEntry::map::iterator itor = mBanList.begin();
@@ -854,7 +854,7 @@ BOOL LLParcel::addToBanList(const LLUUID& agent_id, S32 time)
             else
             {
                 // existing one expires later
-                return FALSE;
+                return false;
             }
         }
         else
@@ -868,13 +868,13 @@ BOOL LLParcel::addToBanList(const LLUUID& agent_id, S32 time)
     new_entry.mTime  = time;
     new_entry.mFlags = 0x0;
     mBanList[new_entry.mID] = new_entry;
-    return TRUE;
+    return true;
 }
 
-BOOL remove_from_access_array(std::map<LLUUID,LLAccessEntry>* list,
+bool remove_from_access_array(std::map<LLUUID,LLAccessEntry>* list,
                               const LLUUID& agent_id)
 {
-    BOOL removed = FALSE;
+    bool removed = false;
     LLAccessEntry::map::iterator itor = list->begin();
     while (itor != list->end())
     {
@@ -882,7 +882,7 @@ BOOL remove_from_access_array(std::map<LLUUID,LLAccessEntry>* list,
         if (entry.mID == agent_id)
         {
             list->erase(itor++);
-            removed = TRUE;
+            removed = true;
         }
         else
         {
@@ -892,12 +892,12 @@ BOOL remove_from_access_array(std::map<LLUUID,LLAccessEntry>* list,
     return removed;
 }
 
-BOOL LLParcel::removeFromAccessList(const LLUUID& agent_id)
+bool LLParcel::removeFromAccessList(const LLUUID& agent_id)
 {
     return remove_from_access_array(&mAccessList, agent_id);
 }
 
-BOOL LLParcel::removeFromBanList(const LLUUID& agent_id)
+bool LLParcel::removeFromBanList(const LLUUID& agent_id)
 {
     return remove_from_access_array(&mBanList, agent_id);
 }
@@ -947,13 +947,13 @@ const std::string& LLParcel::getActionString(LLParcel::EAction action)
     return PARCEL_ACTION_STRING[index];
 }
 
-BOOL LLParcel::isSaleTimerExpired(const U64& time)
+bool LLParcel::isSaleTimerExpired(const U64& time)
 {
-    if (mSaleTimerExpires.getStarted() == FALSE)
+    if (!mSaleTimerExpires.getStarted())
     {
-        return FALSE;
+        return false;
     }
-    BOOL expired = mSaleTimerExpires.checkExpirationAndReset(0.0);
+    bool expired = mSaleTimerExpires.checkExpirationAndReset(0.0);
     if (expired)
     {
         mSaleTimerExpires.stop();
@@ -961,13 +961,13 @@ BOOL LLParcel::isSaleTimerExpired(const U64& time)
     return expired;
 }
 
-BOOL LLParcel::isMediaResetTimerExpired(const U64& time)
+bool LLParcel::isMediaResetTimerExpired(const U64& time)
 {
-    if (mMediaResetTimer.getStarted() == FALSE)
+    if (!mMediaResetTimer.getStarted())
     {
-        return FALSE;
+        return false;
     }
-    BOOL expired = mMediaResetTimer.checkExpirationAndReset(0.0);
+    bool expired = mMediaResetTimer.checkExpirationAndReset(0.0);
     if (expired)
     {
         mMediaResetTimer.stop();
@@ -976,7 +976,7 @@ BOOL LLParcel::isMediaResetTimerExpired(const U64& time)
 }
 
 
-void LLParcel::startSale(const LLUUID& buyer_id, BOOL is_buyer_group)
+void LLParcel::startSale(const LLUUID& buyer_id, bool is_buyer_group)
 {
     // TODO -- this and all Sale related methods need to move out of the LLParcel
     // base class and into server-side-only LLSimParcel class
@@ -1011,11 +1011,11 @@ void LLParcel::expireSale(
     mSaleTimerExpires.setTimerExpirySec(0.0);
     mSaleTimerExpires.stop();
     setPreviousOwnerID(LLUUID::null);
-    setPreviouslyGroupOwned(FALSE);
-    setSellWithObjects(FALSE);
+    setPreviouslyGroupOwned(false);
+    setSellWithObjects(false);
     type = TRANS_LAND_RELEASE;
     mStatus = OS_NONE;
-    flags = pack_transaction_flags(mGroupOwned, FALSE);
+    flags = pack_transaction_flags(mGroupOwned, false);
     mAuthBuyerID.setNull();
     from_id = mOwnerID;
     mOwnerID.setNull();
@@ -1037,12 +1037,12 @@ void LLParcel::completeSale(
 
     // Purchased parcels are assumed to no longer be for sale.
     // Otherwise someone can snipe the sale.
-    setForSale(FALSE);
+    setForSale(false);
     setAuctionID(0);
 
     // Turn off show directory, since it's a recurring fee that
     // the buyer may not want.
-    setParcelFlag(PF_SHOW_DIRECTORY, FALSE);
+    setParcelFlag(PF_SHOW_DIRECTORY, false);
 
     //should be cleared on sale.
     mAccessList.clear();
@@ -1062,23 +1062,23 @@ void LLParcel::clearSale()
         mStatus = OS_LEASED;
     }
     mAuthBuyerID.setNull();
-    setForSale(FALSE);
+    setForSale(false);
     setAuctionID(0);
     setPreviousOwnerID(LLUUID::null);
-    setPreviouslyGroupOwned(FALSE);
-    setSellWithObjects(FALSE);
+    setPreviouslyGroupOwned(false);
+    setSellWithObjects(false);
 }
 
-BOOL LLParcel::isPublic() const
+bool LLParcel::isPublic() const
 {
     return (mOwnerID.isNull());
 }
 
-BOOL LLParcel::isBuyerAuthorized(const LLUUID& buyer_id) const
+bool LLParcel::isBuyerAuthorized(const LLUUID& buyer_id) const
 {
     if(mAuthBuyerID.isNull())
     {
-        return TRUE;
+        return true;
     }
     return (mAuthBuyerID == buyer_id);
 }
@@ -1093,15 +1093,15 @@ void LLParcel::clearParcel()
     setMediaID(LLUUID::null);
     setMediaDesc(LLStringUtil::null);
     setMediaAutoScale(0);
-    setMediaLoop(TRUE);
+    setMediaLoop(1);
     mMediaWidth = 0;
     mMediaHeight = 0;
     setMediaCurrentURL(LLStringUtil::null);
-    setMediaAllowNavigate(TRUE);
-    setMediaPreventCameraZoom(FALSE);
+    setMediaAllowNavigate(1);
+    setMediaPreventCameraZoom(0);
     setMediaURLTimeout(0.0f);
     setMusicURL(LLStringUtil::null);
-    setInEscrow(FALSE);
+    setInEscrow(false);
     setAuthorizedBuyerID(LLUUID::null);
     setCategory(C_NONE);
     setSnapshotID(LLUUID::null);
diff --git a/indra/llinventory/llparcel.h b/indra/llinventory/llparcel.h
index 8717f38ecf..67d713db1f 100644
--- a/indra/llinventory/llparcel.h
+++ b/indra/llinventory/llparcel.h
@@ -209,37 +209,37 @@ public:
     LLParcel();
     LLParcel(
         const LLUUID &owner_id,
-        BOOL modify,
-        BOOL terraform,
-        BOOL damage,
+        bool modify,
+        bool terraform,
+        bool damage,
         time_t claim_date,
         S32 claim_price,
         S32 rent_price,
         S32 area,
         S32 sim_object_limit,
         F32 parcel_object_bonus,
-        BOOL is_group_owned = FALSE);
+        bool is_group_owned = false);
     virtual ~LLParcel();
 
     void init(
         const LLUUID &owner_id,
-        BOOL modify,
-        BOOL terraform,
-        BOOL damage,
+        bool modify,
+        bool terraform,
+        bool damage,
         time_t claim_date,
         S32 claim_price,
         S32 rent_price,
         S32 area,
         S32 sim_object_limit,
         F32 parcel_object_bonus,
-        BOOL is_group_owned = FALSE);
+        bool is_group_owned = false);
 
     // TODO: make an actual copy constructor for this
     void overrideParcelFlags(U32 flags);
     // if you specify an agent id here, the group id will be zeroed
     void overrideOwner(
         const LLUUID& owner_id,
-        BOOL is_group_owned = FALSE);
+        bool is_group_owned = false);
     void overrideSaleTimerExpires(F32 secs_left) { mSaleTimerExpires.setTimerExpirySec(secs_left); }
 
     // MANIPULATORS
@@ -277,35 +277,35 @@ public:
     void setUserLocation(const LLVector3& pos)  { mUserLocation = pos; }
     void setUserLookAt(const LLVector3& rot)    { mUserLookAt = rot; }
     void setLandingType(const ELandingType type) { mLandingType = type; }
-    void setSeeAVs(BOOL see_avs)    { mSeeAVs = see_avs;    }
+    void setSeeAVs(bool see_avs)    { mSeeAVs = see_avs;    }
     void setHaveNewParcelLimitData(bool have_new_parcel_data)       { mHaveNewParcelLimitData = have_new_parcel_data;       }       // Remove this once hidden AV feature is fully available grid-wide
 
     void setAuctionID(U32 auction_id) { mAuctionID = auction_id;}
 
     void    setAllParcelFlags(U32 flags);
-    void    setParcelFlag(U32 flag, BOOL b);
+    void    setParcelFlag(U32 flag, bool b);
 
     virtual void setArea(S32 area, S32 sim_object_limit);
     void    setDiscountRate(F32 rate);
 
-    void    setAllowModify(BOOL b)  { setParcelFlag(PF_CREATE_OBJECTS, b); }
-    void    setAllowGroupModify(BOOL b) { setParcelFlag(PF_CREATE_GROUP_OBJECTS, b); }
-    void    setAllowAllObjectEntry(BOOL b)  { setParcelFlag(PF_ALLOW_ALL_OBJECT_ENTRY, b); }
-    void    setAllowGroupObjectEntry(BOOL b)    { setParcelFlag(PF_ALLOW_GROUP_OBJECT_ENTRY, b); }
-    void    setAllowTerraform(BOOL b){setParcelFlag(PF_ALLOW_TERRAFORM, b); }
-    void    setAllowDamage(BOOL b)  { setParcelFlag(PF_ALLOW_DAMAGE, b); }
-    void    setAllowFly(BOOL b)     { setParcelFlag(PF_ALLOW_FLY, b); }
-    void    setAllowGroupScripts(BOOL b)    { setParcelFlag(PF_ALLOW_GROUP_SCRIPTS, b); }
-    void    setAllowOtherScripts(BOOL b)    { setParcelFlag(PF_ALLOW_OTHER_SCRIPTS, b); }
-    void    setAllowDeedToGroup(BOOL b) { setParcelFlag(PF_ALLOW_DEED_TO_GROUP, b); }
-    void    setContributeWithDeed(BOOL b) { setParcelFlag(PF_CONTRIBUTE_WITH_DEED, b); }
-    void    setForSale(BOOL b)      { setParcelFlag(PF_FOR_SALE, b); }
-    void    setSoundOnly(BOOL b)    { setParcelFlag(PF_SOUND_LOCAL, b); }
-    void    setDenyAnonymous(BOOL b) { setParcelFlag(PF_DENY_ANONYMOUS, b); }
-    void    setDenyAgeUnverified(BOOL b) { setParcelFlag(PF_DENY_AGEUNVERIFIED, b); }
-    void    setRestrictPushObject(BOOL b) { setParcelFlag(PF_RESTRICT_PUSHOBJECT, b); }
-    void    setAllowGroupAVSounds(BOOL b)   { mAllowGroupAVSounds = b;      }
-    void    setAllowAnyAVSounds(BOOL b)     { mAllowAnyAVSounds = b;        }
+    void    setAllowModify(bool b)  { setParcelFlag(PF_CREATE_OBJECTS, b); }
+    void    setAllowGroupModify(bool b) { setParcelFlag(PF_CREATE_GROUP_OBJECTS, b); }
+    void    setAllowAllObjectEntry(bool b)  { setParcelFlag(PF_ALLOW_ALL_OBJECT_ENTRY, b); }
+    void    setAllowGroupObjectEntry(bool b)    { setParcelFlag(PF_ALLOW_GROUP_OBJECT_ENTRY, b); }
+    void    setAllowTerraform(bool b){setParcelFlag(PF_ALLOW_TERRAFORM, b); }
+    void    setAllowDamage(bool b)  { setParcelFlag(PF_ALLOW_DAMAGE, b); }
+    void    setAllowFly(bool b)     { setParcelFlag(PF_ALLOW_FLY, b); }
+    void    setAllowGroupScripts(bool b)    { setParcelFlag(PF_ALLOW_GROUP_SCRIPTS, b); }
+    void    setAllowOtherScripts(bool b)    { setParcelFlag(PF_ALLOW_OTHER_SCRIPTS, b); }
+    void    setAllowDeedToGroup(bool b) { setParcelFlag(PF_ALLOW_DEED_TO_GROUP, b); }
+    void    setContributeWithDeed(bool b) { setParcelFlag(PF_CONTRIBUTE_WITH_DEED, b); }
+    void    setForSale(bool b)      { setParcelFlag(PF_FOR_SALE, b); }
+    void    setSoundOnly(bool b)    { setParcelFlag(PF_SOUND_LOCAL, b); }
+    void    setDenyAnonymous(bool b) { setParcelFlag(PF_DENY_ANONYMOUS, b); }
+    void    setDenyAgeUnverified(bool b) { setParcelFlag(PF_DENY_AGEUNVERIFIED, b); }
+    void    setRestrictPushObject(bool b) { setParcelFlag(PF_RESTRICT_PUSHOBJECT, b); }
+    void    setAllowGroupAVSounds(bool b)   { mAllowGroupAVSounds = b;      }
+    void    setAllowAnyAVSounds(bool b)     { mAllowAnyAVSounds = b;        }
     void    setObscureMOAP(bool b)  { mObscureMOAP = b; }
 
     void    setDrawDistance(F32 dist)   { mDrawDistance = dist; }
@@ -315,9 +315,9 @@ public:
     void    setPassPrice(S32 price)             { mPassPrice = price; }
     void    setPassHours(F32 hours)             { mPassHours = hours; }
 
-//  BOOL    importStream(std::istream& input_stream);
-    BOOL    importAccessEntry(std::istream& input_stream, LLAccessEntry* entry);
-    // BOOL exportStream(std::ostream& output_stream);
+//  bool    importStream(std::istream& input_stream);
+    bool    importAccessEntry(std::istream& input_stream, LLAccessEntry* entry);
+    // bool exportStream(std::ostream& output_stream);
 
     void    packMessage(LLMessageSystem* msg);
     void    packMessage(LLSD& msg);
@@ -343,11 +343,11 @@ public:
     // time earlier than "now".
     void expirePasses(S32 now);
 
-    // Add to list, suppressing duplicates.  Returns TRUE if added.
-    BOOL addToAccessList(const LLUUID& agent_id, S32 time);
-    BOOL addToBanList(const LLUUID& agent_id, S32 time);
-    BOOL removeFromAccessList(const LLUUID& agent_id);
-    BOOL removeFromBanList(const LLUUID& agent_id);
+    // Add to list, suppressing duplicates.  Returns true if added.
+    bool addToAccessList(const LLUUID& agent_id, S32 time);
+    bool addToBanList(const LLUUID& agent_id, S32 time);
+    bool removeFromAccessList(const LLUUID& agent_id);
+    bool removeFromBanList(const LLUUID& agent_id);
 
     // ACCESSORS
     const LLUUID&   getID() const               { return mID; }
@@ -372,19 +372,19 @@ public:
     const LLUUID&   getGroupID() const          { return mGroupID; }
     S32             getPassPrice() const        { return mPassPrice; }
     F32             getPassHours() const        { return mPassHours; }
-    BOOL            getIsGroupOwned() const     { return mGroupOwned; }
+    bool            getIsGroupOwned() const     { return mGroupOwned; }
 
     U32 getAuctionID() const    { return mAuctionID; }
     bool isInEscrow() const     { return mInEscrow; }
 
-    BOOL isPublic() const;
+    bool isPublic() const;
 
     // Region-local user-specified position
     const LLVector3& getUserLocation() const    { return mUserLocation; }
     const LLVector3& getUserLookAt() const  { return mUserLookAt; }
     ELandingType getLandingType() const { return mLandingType; }
-    BOOL getSeeAVs() const          { return mSeeAVs;       }
-    BOOL getHaveNewParcelLimitData() const      { return mHaveNewParcelLimitData;   }
+    bool getSeeAVs() const          { return mSeeAVs;       }
+    bool getHaveNewParcelLimitData() const      { return mHaveNewParcelLimitData;   }
 
     // User-specified snapshot
     const LLUUID&   getSnapshotID() const       { return mSnapshotID; }
@@ -395,7 +395,7 @@ public:
     const LLUUID& getAuthorizedBuyerID() const { return mAuthBuyerID; }
 
     // helper function
-    BOOL isBuyerAuthorized(const LLUUID& buyer_id) const;
+    bool isBuyerAuthorized(const LLUUID& buyer_id) const;
 
     // The buyer of a plot is set when someone indicates they want to
     // buy the plot, and the system is simply waiting for tier-up
@@ -419,10 +419,10 @@ public:
 
     // dealing with sales and parcel conversion.
     //
-    // the isSaleTimerExpired will trivially return FALSE if there is
+    // the isSaleTimerExpired will trivially return false if there is
     // no sale going on. Pass in the current time in usec which will
     // be used for comparison.
-    BOOL isSaleTimerExpired(const U64& time);
+    bool isSaleTimerExpired(const U64& time);
 
     F32 getSaleTimerExpires() { return mSaleTimerExpires.getRemainingTimeF32(); }
 
@@ -431,7 +431,7 @@ public:
 
     // need to record a few things with the parcel when a sale
     // starts.
-    void startSale(const LLUUID& buyer_id, BOOL is_buyer_group);
+    void startSale(const LLUUID& buyer_id, bool is_buyer_group);
 
     // do the expiration logic, which needs to return values usable in
     // a L$ transaction.
@@ -440,86 +440,54 @@ public:
     void clearSale();
 
 
-    BOOL isMediaResetTimerExpired(const U64& time);
+    bool isMediaResetTimerExpired(const U64& time);
 
 
     // more accessors
-    U32     getParcelFlags() const          { return mParcelFlags; }
+    U32     getParcelFlags() const { return mParcelFlags; }
 
-    BOOL    getParcelFlag(U32 flag) const
-                    { return (mParcelFlags & flag) ? TRUE : FALSE; }
+    bool    getParcelFlag(U32 flag) const { return (mParcelFlags & flag) != 0; }
 
     // objects can be added or modified by anyone (only parcel owner if disabled)
-    BOOL    getAllowModify() const
-                    { return (mParcelFlags & PF_CREATE_OBJECTS) ? TRUE : FALSE; }
+    bool    getAllowModify() const                     { return getParcelFlag(PF_CREATE_OBJECTS); }
 
     // objects can be added or modified by group members
-    BOOL    getAllowGroupModify() const
-                    { return (mParcelFlags & PF_CREATE_GROUP_OBJECTS) ? TRUE : FALSE; }
+    bool    getAllowGroupModify() const                { return getParcelFlag(PF_CREATE_GROUP_OBJECTS); }
 
     // the parcel can be deeded to the group
-    BOOL    getAllowDeedToGroup() const
-                    { return (mParcelFlags & PF_ALLOW_DEED_TO_GROUP) ? TRUE : FALSE; }
+    bool    getAllowDeedToGroup() const                { return getParcelFlag(PF_ALLOW_DEED_TO_GROUP); }
 
     // Does the owner want to make a contribution along with the deed.
-    BOOL getContributeWithDeed() const
-    { return (mParcelFlags & PF_CONTRIBUTE_WITH_DEED) ? TRUE : FALSE; }
+    bool    getContributeWithDeed() const              { return getParcelFlag(PF_CONTRIBUTE_WITH_DEED); }
 
     // heightfield can be modified
-    BOOL    getAllowTerraform() const
-                    { return (mParcelFlags & PF_ALLOW_TERRAFORM) ? TRUE : FALSE; }
+    bool    getAllowTerraform() const                  { return getParcelFlag(PF_ALLOW_TERRAFORM); }
 
     // avatars can be hurt here
-    BOOL    getAllowDamage() const
-                    { return (mParcelFlags & PF_ALLOW_DAMAGE) ? TRUE : FALSE; }
-
-    BOOL    getAllowFly() const
-                    { return (mParcelFlags & PF_ALLOW_FLY) ? TRUE : FALSE; }
-
-    BOOL    getAllowGroupScripts() const
-                    { return (mParcelFlags & PF_ALLOW_GROUP_SCRIPTS) ? TRUE : FALSE; }
-
-    BOOL    getAllowOtherScripts() const
-                    { return (mParcelFlags & PF_ALLOW_OTHER_SCRIPTS) ? TRUE : FALSE; }
-
-    BOOL    getAllowAllObjectEntry() const
-                    { return (mParcelFlags & PF_ALLOW_ALL_OBJECT_ENTRY) ? TRUE : FALSE; }
-
-    BOOL    getAllowGroupObjectEntry() const
-                    { return (mParcelFlags & PF_ALLOW_GROUP_OBJECT_ENTRY) ? TRUE : FALSE; }
-
-    BOOL    getForSale() const
-                    { return (mParcelFlags & PF_FOR_SALE) ? TRUE : FALSE; }
-    BOOL    getSoundLocal() const
-                    { return (mParcelFlags & PF_SOUND_LOCAL) ? TRUE : FALSE; }
-    BOOL    getParcelFlagAllowVoice() const
-                    { return (mParcelFlags & PF_ALLOW_VOICE_CHAT) ? TRUE : FALSE; }
-    BOOL    getParcelFlagUseEstateVoiceChannel() const
-                    { return (mParcelFlags & PF_USE_ESTATE_VOICE_CHAN) ? TRUE : FALSE; }
-    BOOL    getAllowPublish() const
-                    { return (mParcelFlags & PF_ALLOW_PUBLISH) ? TRUE : FALSE; }
-    BOOL    getMaturePublish() const
-                    { return (mParcelFlags & PF_MATURE_PUBLISH) ? TRUE : FALSE; }
-    BOOL    getRestrictPushObject() const
-                    { return (mParcelFlags & PF_RESTRICT_PUSHOBJECT) ? TRUE : FALSE; }
-    BOOL    getRegionPushOverride() const
-                    { return mRegionPushOverride; }
-    BOOL    getRegionDenyAnonymousOverride() const
-                    { return mRegionDenyAnonymousOverride; }
-    BOOL    getRegionDenyAgeUnverifiedOverride() const
-                    { return mRegionDenyAgeUnverifiedOverride; }
-    BOOL    getRegionAllowAccessOverride() const
-                    { return mRegionAllowAccessoverride; }
-    BOOL    getRegionAllowEnvironmentOverride() const
-                    { return mRegionAllowEnvironmentOverride; }
-    S32     getParcelEnvironmentVersion() const
-                    { return mCurrentEnvironmentVersion; }
-
-
-    BOOL    getAllowGroupAVSounds() const   { return mAllowGroupAVSounds;   }
-    BOOL    getAllowAnyAVSounds()   const   { return mAllowAnyAVSounds;     }
-
-    bool    getObscureMOAP() const { return mObscureMOAP; }
+    bool    getAllowDamage() const                     { return getParcelFlag(PF_ALLOW_DAMAGE); }
+
+    bool    getAllowFly() const                        { return getParcelFlag(PF_ALLOW_FLY); }
+    bool    getAllowGroupScripts() const               { return getParcelFlag(PF_ALLOW_GROUP_SCRIPTS); }
+    bool    getAllowOtherScripts() const               { return getParcelFlag(PF_ALLOW_OTHER_SCRIPTS); }
+    bool    getAllowAllObjectEntry() const             { return getParcelFlag(PF_ALLOW_ALL_OBJECT_ENTRY); }
+    bool    getAllowGroupObjectEntry() const           { return getParcelFlag(PF_ALLOW_GROUP_OBJECT_ENTRY); }
+    bool    getForSale() const                         { return getParcelFlag(PF_FOR_SALE); }
+    bool    getSoundLocal() const                      { return getParcelFlag(PF_SOUND_LOCAL); }
+    bool    getParcelFlagAllowVoice() const            { return getParcelFlag(PF_ALLOW_VOICE_CHAT); }
+    bool    getParcelFlagUseEstateVoiceChannel() const { return getParcelFlag(PF_USE_ESTATE_VOICE_CHAN); }
+    bool    getAllowPublish() const                    { return getParcelFlag(PF_ALLOW_PUBLISH); }
+    bool    getMaturePublish() const                   { return getParcelFlag(PF_MATURE_PUBLISH); }
+    bool    getRestrictPushObject() const              { return getParcelFlag(PF_RESTRICT_PUSHOBJECT); }
+
+    bool    getRegionPushOverride() const              { return mRegionPushOverride; }
+    bool    getRegionDenyAnonymousOverride() const     { return mRegionDenyAnonymousOverride; }
+    bool    getRegionDenyAgeUnverifiedOverride() const { return mRegionDenyAgeUnverifiedOverride; }
+    bool    getRegionAllowAccessOverride() const       { return mRegionAllowAccessoverride; }
+    bool    getRegionAllowEnvironmentOverride() const  { return mRegionAllowEnvironmentOverride; }
+    S32     getParcelEnvironmentVersion() const        { return mCurrentEnvironmentVersion; }
+    bool    getAllowGroupAVSounds() const              { return mAllowGroupAVSounds; }
+    bool    getAllowAnyAVSounds() const                { return mAllowAnyAVSounds; }
+    bool    getObscureMOAP() const                     { return mObscureMOAP; }
 
     F32     getDrawDistance() const         { return mDrawDistance; }
     S32     getSalePrice() const            { return mSalePrice; }
@@ -537,10 +505,10 @@ public:
     S32     getClaimPrice() const           { return mClaimPricePerMeter * mArea; }
 
     // Can this agent create objects here?
-    BOOL    allowModifyBy(const LLUUID &agent_id, const LLUUID &group_id) const;
+    bool    allowModifyBy(const LLUUID &agent_id, const LLUUID &group_id) const;
 
     // Can this agent change the shape of the land?
-    BOOL    allowTerraformBy(const LLUUID &agent_id) const;
+    bool    allowTerraformBy(const LLUUID &agent_id) const;
 
     bool    operator==(const LLParcel &rhs) const;
 
@@ -582,30 +550,30 @@ public:
     void    setParcelPrimBonus(F32 bonus)   { mParcelPrimBonus = bonus; }
 
     void    setCleanOtherTime(S32 time)                 { mCleanOtherTime = time; }
-    void    setRegionPushOverride(BOOL override) {mRegionPushOverride = override; }
-    void    setRegionDenyAnonymousOverride(BOOL override)   { mRegionDenyAnonymousOverride = override; }
-    void    setRegionDenyAgeUnverifiedOverride(BOOL override)   { mRegionDenyAgeUnverifiedOverride = override; }
-    void    setRegionAllowAccessOverride(BOOL override) { mRegionAllowAccessoverride = override; }
-    void    setRegionAllowEnvironmentOverride(BOOL override) { mRegionAllowEnvironmentOverride = override; }
+    void    setRegionPushOverride(bool override) {mRegionPushOverride = override; }
+    void    setRegionDenyAnonymousOverride(bool override)   { mRegionDenyAnonymousOverride = override; }
+    void    setRegionDenyAgeUnverifiedOverride(bool override)   { mRegionDenyAgeUnverifiedOverride = override; }
+    void    setRegionAllowAccessOverride(bool override) { mRegionAllowAccessoverride = override; }
+    void    setRegionAllowEnvironmentOverride(bool override) { mRegionAllowEnvironmentOverride = override; }
 
     void    setParcelEnvironmentVersion(S32 version) { mCurrentEnvironmentVersion = version; }
 
     // Accessors for parcel sellWithObjects
     void    setPreviousOwnerID(LLUUID prev_owner)   { mPreviousOwnerID = prev_owner; }
-    void    setPreviouslyGroupOwned(BOOL b)         { mPreviouslyGroupOwned = b; }
-    void    setSellWithObjects(BOOL b)              { setParcelFlag(PF_SELL_PARCEL_OBJECTS, b); }
+    void    setPreviouslyGroupOwned(bool b)         { mPreviouslyGroupOwned = b; }
+    void    setSellWithObjects(bool b)              { setParcelFlag(PF_SELL_PARCEL_OBJECTS, b); }
 
     LLUUID  getPreviousOwnerID() const      { return mPreviousOwnerID; }
-    BOOL    getPreviouslyGroupOwned() const { return mPreviouslyGroupOwned; }
-    BOOL    getSellWithObjects() const      { return (mParcelFlags & PF_SELL_PARCEL_OBJECTS) ? TRUE : FALSE; }
+    bool    getPreviouslyGroupOwned() const { return mPreviouslyGroupOwned; }
+    bool    getSellWithObjects() const      { return getParcelFlag(PF_SELL_PARCEL_OBJECTS); }
 
 protected:
     LLUUID mID;
     LLUUID              mOwnerID;
     LLUUID              mGroupID;
-    BOOL                mGroupOwned; // TRUE if mOwnerID is a group_id
+    bool                mGroupOwned; // true if mOwnerID is a group_id
     LLUUID              mPreviousOwnerID;
-    BOOL                mPreviouslyGroupOwned;
+    bool                mPreviouslyGroupOwned;
 
     EOwnershipStatus mStatus;
     ECategory mCategory;
@@ -614,8 +582,8 @@ protected:
     LLVector3 mUserLocation;
     LLVector3 mUserLookAt;
     ELandingType mLandingType;
-    BOOL mSeeAVs;                           // Avatars on this parcel are visible from outside it
-    BOOL mHaveNewParcelLimitData;           // Remove once hidden AV feature is grid-wide
+    bool mSeeAVs;                           // Avatars on this parcel are visible from outside it
+    bool mHaveNewParcelLimitData;           // Remove once hidden AV feature is grid-wide
     LLTimer mSaleTimerExpires;
     LLTimer mMediaResetTimer;
 
@@ -666,13 +634,13 @@ protected:
     S32                 mTempPrimCount;
     F32                 mParcelPrimBonus;
     S32                 mCleanOtherTime;
-    BOOL                mRegionPushOverride;
-    BOOL                mRegionDenyAnonymousOverride;
-    BOOL                mRegionDenyAgeUnverifiedOverride;
-    BOOL                mRegionAllowAccessoverride;
-    BOOL                mRegionAllowEnvironmentOverride;
-    BOOL                mAllowGroupAVSounds;
-    BOOL                mAllowAnyAVSounds;
+    bool                mRegionPushOverride;
+    bool                mRegionDenyAnonymousOverride;
+    bool                mRegionDenyAgeUnverifiedOverride;
+    bool                mRegionAllowAccessoverride;
+    bool                mRegionAllowEnvironmentOverride;
+    bool                mAllowGroupAVSounds;
+    bool                mAllowAnyAVSounds;
     bool                mObscureMOAP;
     S32                 mCurrentEnvironmentVersion;
 
@@ -692,13 +660,11 @@ public:
 
     void setExperienceKeyType(const LLUUID& experience_key, U32 type);
     U32 countExperienceKeyType(U32 type);
-    U32 getExperienceKeyType(const LLUUID& experience_key)const;
     LLAccessEntry::map getExperienceKeysByType(U32 type)const;
     void clearExperienceKeysByType(U32 type);
 
 private:
     xp_type_map_t mExperienceKeys;
-
 };
 
 
diff --git a/indra/llinventory/llpermissions.cpp b/indra/llinventory/llpermissions.cpp
index 65df5ebb91..c8963881df 100644
--- a/indra/llinventory/llpermissions.cpp
+++ b/indra/llinventory/llpermissions.cpp
@@ -87,21 +87,21 @@ void LLPermissions::initMasks(LLInventoryType::EType type)
     }
 }
 
-BOOL LLPermissions::getOwnership(LLUUID& owner_id, BOOL& is_group_owned) const
+bool LLPermissions::getOwnership(LLUUID& owner_id, bool& is_group_owned) const
 {
     if(mOwner.notNull())
     {
         owner_id = mOwner;
-        is_group_owned = FALSE;
-        return TRUE;
+        is_group_owned = false;
+        return true;
     }
     else if(mIsGroupOwned)
     {
         owner_id = mGroup;
-        is_group_owned = TRUE;
-        return TRUE;
+        is_group_owned = true;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 LLUUID LLPermissions::getSafeOwner() const
@@ -232,13 +232,13 @@ void LLPermissions::accumulate(const LLPermissions& perm)
 // saves last owner, sets current owner, and sets the group.  note
 // that this function has to more cleverly apply the fair use
 // permissions.
-BOOL LLPermissions::setOwnerAndGroup(
+bool LLPermissions::setOwnerAndGroup(
     const LLUUID& agent,
     const LLUUID& owner,
     const LLUUID& group,
     bool is_atomic)
 {
-    BOOL allowed = FALSE;
+    bool allowed = false;
 
     if( agent.isNull() || mOwner.isNull()
        || ((agent == mOwner) && ((owner == mOwner) || (mMaskOwner & PERM_TRANSFER)) ) )
@@ -246,7 +246,7 @@ BOOL LLPermissions::setOwnerAndGroup(
         // ...system can alway set owner
         // ...public objects can be claimed by anyone
         // ...otherwise, agent must own it and have transfer ability
-        allowed = TRUE;
+        allowed = true;
     }
 
     if (allowed)
@@ -301,7 +301,7 @@ void LLPermissions::yesReallySetOwner(const LLUUID& owner, bool group_owned)
     mIsGroupOwned = group_owned;
 }
 
-BOOL LLPermissions::deedToGroup(const LLUUID& agent, const LLUUID& group)
+bool LLPermissions::deedToGroup(const LLUUID& agent, const LLUUID& group)
 {
     if(group.notNull() && (agent.isNull() || ((group == mGroup)
                                               && (mMaskOwner & PERM_TRANSFER)
@@ -318,18 +318,18 @@ BOOL LLPermissions::deedToGroup(const LLUUID& agent, const LLUUID& group)
         mIsGroupOwned = true;
         fixFairUse();
         fix();
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLPermissions::setBaseBits(const LLUUID& agent, BOOL set, PermissionMask bits)
+bool LLPermissions::setBaseBits(const LLUUID& agent, bool set, PermissionMask bits)
 {
-    BOOL ownership = FALSE;
+    bool ownership = false;
     if(agent.isNull())
     {
         // only the system is always allowed to change base bits
-        ownership = TRUE;
+        ownership = true;
     }
 
     if (ownership)
@@ -351,19 +351,19 @@ BOOL LLPermissions::setBaseBits(const LLUUID& agent, BOOL set, PermissionMask bi
 
 // Note: If you attempt to set bits that the base bits doesn't allow,
 // the function will succeed, but those bits will not be set.
-BOOL LLPermissions::setOwnerBits(const LLUUID& agent, BOOL set, PermissionMask bits)
+bool LLPermissions::setOwnerBits(const LLUUID& agent, bool set, PermissionMask bits)
 {
-    BOOL ownership = FALSE;
+    bool ownership = false;
 
     if(agent.isNull())
     {
         // ...system always allowed to change things
-        ownership = TRUE;
+        ownership = true;
     }
     else if (agent == mOwner)
     {
         // ...owner bits can only be set by owner
-        ownership = TRUE;
+        ownership = true;
     }
 
     // If we have correct ownership and
@@ -383,15 +383,15 @@ BOOL LLPermissions::setOwnerBits(const LLUUID& agent, BOOL set, PermissionMask b
     return (ownership);
 }
 
-BOOL LLPermissions::setGroupBits(const LLUUID& agent, const LLUUID& group, BOOL set, PermissionMask bits)
+bool LLPermissions::setGroupBits(const LLUUID& agent, const LLUUID& group, bool set, PermissionMask bits)
 {
-    BOOL ownership = FALSE;
+    bool ownership = false;
     if((agent.isNull()) || (agent == mOwner)
        || ((group == mGroup) && (!mGroup.isNull())))
     {
         // The group bits can be set by the system, the owner, or a
         // group member.
-        ownership = TRUE;
+        ownership = true;
     }
 
     if (ownership)
@@ -412,15 +412,15 @@ BOOL LLPermissions::setGroupBits(const LLUUID& agent, const LLUUID& group, BOOL
 
 // Note: If you attempt to set bits that the creator or owner doesn't allow,
 // the function will succeed, but those bits will not be set.
-BOOL LLPermissions::setEveryoneBits(const LLUUID& agent, const LLUUID& group, BOOL set, PermissionMask bits)
+bool LLPermissions::setEveryoneBits(const LLUUID& agent, const LLUUID& group, bool set, PermissionMask bits)
 {
-    BOOL ownership = FALSE;
+    bool ownership = false;
     if((agent.isNull()) || (agent == mOwner)
        || ((group == mGroup) && (!mGroup.isNull())))
     {
         // The everyone bits can be set by the system, the owner, or a
         // group member.
-        ownership = TRUE;
+        ownership = true;
     }
     if (ownership)
     {
@@ -441,15 +441,15 @@ BOOL LLPermissions::setEveryoneBits(const LLUUID& agent, const LLUUID& group, BO
 
 // Note: If you attempt to set bits that the creator or owner doesn't allow,
 // the function will succeed, but those bits will not be set.
-BOOL LLPermissions::setNextOwnerBits(const LLUUID& agent, const LLUUID& group, BOOL set, PermissionMask bits)
+bool LLPermissions::setNextOwnerBits(const LLUUID& agent, const LLUUID& group, bool set, PermissionMask bits)
 {
-    BOOL ownership = FALSE;
+    bool ownership = false;
     if((agent.isNull()) || (agent == mOwner)
        || ((group == mGroup) && (!mGroup.isNull())))
     {
         // The next owner bits can be set by the system, the owner, or
         // a group member.
-        ownership = TRUE;
+        ownership = true;
     }
     if (ownership)
     {
@@ -478,7 +478,7 @@ bool LLPermissions::allowOperationBy(PermissionBit op, const LLUUID& requester,
     {
         // ...system making request
         // ...not owned
-        return TRUE;
+        return true;
     }
     else if (mIsGroupOwned && (mGroup == requester))
     {
@@ -513,7 +513,7 @@ LLSD LLPermissions::packMessage() const
     result["group-mask"]    =   (S32)mMaskGroup;
     result["everyone-mask"] =   (S32)mMaskEveryone;
     result["next-owner-mask"]=  (S32)mMaskNextOwner;
-    result["group-owned"]   = (BOOL)mIsGroupOwned;
+    result["group-owned"]   = (bool)mIsGroupOwned;
     return result;
 }
 
@@ -531,7 +531,7 @@ void LLPermissions::packMessage(LLMessageSystem* msg) const
     msg->addU32Fast(_PREHASH_GroupMask, mMaskGroup );
     msg->addU32Fast(_PREHASH_EveryoneMask,  mMaskEveryone );
     msg->addU32Fast(_PREHASH_NextOwnerMask, mMaskNextOwner );
-    msg->addBOOLFast(_PREHASH_GroupOwned, (BOOL)mIsGroupOwned);
+    msg->addBOOLFast(_PREHASH_GroupOwned, mIsGroupOwned);
 }
 
 void LLPermissions::unpackMessage(LLSD perms)
@@ -559,13 +559,13 @@ void LLPermissions::unpackMessage(LLMessageSystem* msg, const char* block, S32 b
     msg->getU32Fast(block, _PREHASH_GroupMask, mMaskGroup, block_num );
     msg->getU32Fast(block, _PREHASH_EveryoneMask, mMaskEveryone, block_num );
     msg->getU32Fast(block, _PREHASH_NextOwnerMask, mMaskNextOwner, block_num );
-    BOOL tmp;
+    bool tmp;
     msg->getBOOLFast(block, _PREHASH_GroupOwned, tmp, block_num);
-    mIsGroupOwned = (bool)tmp;
+    mIsGroupOwned = tmp;
 }
 
 
-BOOL LLPermissions::importLegacyStream(std::istream& input_stream)
+bool LLPermissions::importLegacyStream(std::istream& input_stream)
 {
     init(LLUUID::null, LLUUID::null, LLUUID::null, LLUUID::null);
     const S32 BUFSIZE = 16384;
@@ -661,11 +661,11 @@ BOOL LLPermissions::importLegacyStream(std::istream& input_stream)
         }
     }
     fix();
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLPermissions::exportLegacyStream(std::ostream& output_stream) const
+bool LLPermissions::exportLegacyStream(std::ostream& output_stream) const
 {
     std::string uuid_str;
 
@@ -701,12 +701,9 @@ BOOL LLPermissions::exportLegacyStream(std::ostream& output_stream) const
         output_stream <<  "\t\tgroup_owned\t1\n";
     }
     output_stream << "\t}\n";
-    return TRUE;
+    return true;
 }
 
-// Deleted LLPermissions::exportFileXML() and LLPermissions::importXML()
-// because I can't find any non-test code references to it. 2009-05-04 JC
-
 bool LLPermissions::operator==(const LLPermissions &rhs) const
 {
     return
@@ -791,21 +788,21 @@ U8 LLAggregatePermissions::getU8() const
     return byte;
 }
 
-BOOL LLAggregatePermissions::isEmpty() const
+bool LLAggregatePermissions::isEmpty() const
 {
     for(S32 i = 0; i < PI_END; ++i)
     {
         if(mBits[i] != AP_EMPTY)
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 void LLAggregatePermissions::aggregate(PermissionMask mask)
 {
-    BOOL is_allowed = mask & PERM_COPY;
+    bool is_allowed = mask & PERM_COPY;
     aggregateBit(PI_COPY, is_allowed);
     is_allowed = mask & PERM_MODIFY;
     aggregateBit(PI_MODIFY, is_allowed);
@@ -821,7 +818,7 @@ void LLAggregatePermissions::aggregate(const LLAggregatePermissions& ag)
     }
 }
 
-void LLAggregatePermissions::aggregateBit(EPermIndex idx, BOOL allowed)
+void LLAggregatePermissions::aggregateBit(EPermIndex idx, bool allowed)
 {
     //if(AP_SOME == mBits[idx]) return; // P4 branch prediction optimization
     switch(mBits[idx])
diff --git a/indra/llinventory/llpermissions.h b/indra/llinventory/llpermissions.h
index b6071118ff..a68abcfa34 100644
--- a/indra/llinventory/llpermissions.h
+++ b/indra/llinventory/llpermissions.h
@@ -151,18 +151,18 @@ public:
     U32             getMaskEveryone()   const   { return mMaskEveryone; }
     U32 getMaskNextOwner() const { return mMaskNextOwner; }
 
-    // return TRUE if the object has any owner
+    // return true if the object has any owner
     bool isOwned() const { return (mOwner.notNull() || mIsGroupOwned); }
 
-    // return TRUE if group_id is owner.
+    // return true if group_id is owner.
     bool isGroupOwned() const { return mIsGroupOwned; }
 
-    // This API returns TRUE if the object is owned at all, and FALSE
+    // This API returns true if the object is owned at all, and false
     // otherwise. If it is owned at all, owner id is filled with
     // either the owner id or the group id, and the is_group_owned
     // parameter is appropriately filled. The values of owner_id and
     // is_group_owned are not changed if the object is not owned.
-    BOOL getOwnership(LLUUID& owner_id, BOOL& is_group_owned) const;
+    bool getOwnership(LLUUID& owner_id, bool& is_group_owned) const;
 
     // Gets the 'safe' owner.  This should never return LLUUID::null.
     // If no group owned, return the agent owner id normally.
@@ -218,7 +218,7 @@ public:
     // Currently, the only way to have a collection is when an object
     // has inventory and is then itself rolled up into an inventory
     // item.
-    BOOL setOwnerAndGroup(const LLUUID& agent, const LLUUID& owner, const LLUUID& group, bool is_atomic);
+    bool setOwnerAndGroup(const LLUUID& agent, const LLUUID& owner, const LLUUID& group, bool is_atomic);
 
     // only call this if you know what you're doing
     // there are usually perm-bit consequences when the
@@ -237,18 +237,18 @@ public:
     // checked manipulators (since that is how it is used.) If the
     // agent is the system or (group == mGroup and group modify and
     // owner transfer) then this function will deed the permissions,
-    // set the next owner mask, and return TRUE. Otherwise, no change
-    // is effected, and the function returns FALSE.
-    BOOL deedToGroup(const LLUUID& agent, const LLUUID& group);
-    // Attempt to set or clear the given bitmask.  Returns TRUE if you
+    // set the next owner mask, and return true. Otherwise, no change
+    // is effected, and the function returns false.
+    bool deedToGroup(const LLUUID& agent, const LLUUID& group);
+    // Attempt to set or clear the given bitmask.  Returns true if you
     // are allowed to modify the permissions.  If you attempt to turn
     // on bits not allowed by the base bits, the function will return
-    // TRUE, but those bits will not be set.
-    BOOL setBaseBits( const LLUUID& agent, BOOL set, PermissionMask bits);
-    BOOL setOwnerBits( const LLUUID& agent, BOOL set, PermissionMask bits);
-    BOOL setGroupBits( const LLUUID& agent, const LLUUID& group, BOOL set, PermissionMask bits);
-    BOOL setEveryoneBits(const LLUUID& agent, const LLUUID& group, BOOL set, PermissionMask bits);
-    BOOL setNextOwnerBits(const LLUUID& agent, const LLUUID& group, BOOL set, PermissionMask bits);
+    // true, but those bits will not be set.
+    bool setBaseBits( const LLUUID& agent, bool set, PermissionMask bits);
+    bool setOwnerBits( const LLUUID& agent, bool set, PermissionMask bits);
+    bool setGroupBits( const LLUUID& agent, const LLUUID& group, bool set, PermissionMask bits);
+    bool setEveryoneBits(const LLUUID& agent, const LLUUID& group, bool set, PermissionMask bits);
+    bool setNextOwnerBits(const LLUUID& agent, const LLUUID& group, bool set, PermissionMask bits);
 
     // This is currently only used in the Viewer to handle calling cards
     // where the creator is actually used to store the target. Use with care.
@@ -270,6 +270,7 @@ public:
     inline bool allowModifyBy(const LLUUID &agent_id) const;
     inline bool allowCopyBy(const LLUUID& agent_id) const;
     inline bool allowMoveBy(const LLUUID& agent_id) const;
+
     inline bool allowModifyBy(const LLUUID &agent_id, const LLUUID& group) const;
     inline bool allowCopyBy(const LLUUID& agent_id, const LLUUID& group) const;
     inline bool allowMoveBy(const LLUUID &agent_id, const LLUUID &group) const;
@@ -278,27 +279,11 @@ public:
     // current owner is allowed to transfer to the specified agent id.
     inline bool allowTransferTo(const LLUUID &agent_id) const;
 
-    //
-    // DEPRECATED.
-    //
-    // These return true if the given agent can perform the function.
-    // They also return true if the object isn't owned, or the
-    // requesting agent is a system agent.  See llpermissionsflags.h
-    // for bits.
-    //BOOL  allowDeleteBy(const LLUUID& agent_id)   const       { return allowModifyBy(agent_id); }
-    //BOOL  allowEditBy(const LLUUID& agent_id)     const       { return allowModifyBy(agent_id); }
-    // saves last owner and sets current owner
-    //BOOL setOwner(const LLUUID& agent, const LLUUID& owner);
-    // This method saves the last owner, sets the current owner to the
-    // one provided, and sets the base mask as indicated.
-    //BOOL setOwner(const LLUUID& agent, const LLUUID& owner, U32 new_base_mask);
-
-    // Attempt to set or clear the given bitmask.  Returns TRUE if you
-    // are allowed to modify the permissions.  If you attempt to turn
-    // on bits not allowed by the base bits, the function will return
-    // TRUE, but those bits will not be set.
-    //BOOL setGroupBits( const LLUUID& agent, BOOL set, PermissionMask bits);
-    //BOOL setEveryoneBits(const LLUUID& agent, BOOL set, PermissionMask bits);
+    // Returns true if the object can exported by the given agent
+    // (e.g. saved as a local .gltf file)
+    // The current test should return true if the agent is the owner
+    // AND the creator of the object.
+    inline bool allowExportBy(const LLUUID& agent_id) const;
 
     //
     // MISC METHODS and OPERATORS
@@ -311,8 +296,8 @@ public:
     void    packMessage(LLMessageSystem* msg) const;
     void    unpackMessage(LLMessageSystem* msg, const char* block, S32 block_num = 0);
 
-    BOOL    importLegacyStream(std::istream& input_stream);
-    BOOL    exportLegacyStream(std::ostream& output_stream) const;
+    bool    importLegacyStream(std::istream& input_stream);
+    bool    exportLegacyStream(std::ostream& output_stream) const;
 
     bool operator==(const LLPermissions &rhs) const;
     bool operator!=(const LLPermissions &rhs) const;
@@ -353,6 +338,11 @@ bool LLPermissions::allowMoveBy(const LLUUID& agent) const
     return allowOperationBy(PERM_MOVE, agent, LLUUID::null);
 }
 
+bool LLPermissions::allowExportBy(const LLUUID& agent) const
+{
+    return agent == mOwner && agent == mCreator;
+}
+
 bool LLPermissions::allowTransferTo(const LLUUID &agent_id) const
 {
     if (mIsGroupOwned)
@@ -361,7 +351,7 @@ bool LLPermissions::allowTransferTo(const LLUUID &agent_id) const
     }
     else
     {
-        return ((mOwner == agent_id) ? TRUE : allowOperationBy(PERM_TRANSFER, mOwner));
+        return ((mOwner == agent_id) ? true : allowOperationBy(PERM_TRANSFER, mOwner));
     }
 }
 
@@ -401,8 +391,8 @@ public:
     // LSB is to the right
     U8 getU8() const;
 
-    // return TRUE is the aggregate permissions are empty, otherwise FALSE.
-    BOOL isEmpty() const ;
+    // return true is the aggregate permissions are empty, otherwise false.
+    bool isEmpty() const ;
 
     // pass in a PERM_COPY, PERM_TRANSFER, etc, and an EValue
     // enumeration to specifically set that value. Not implemented
@@ -432,7 +422,7 @@ protected:
         PI_END = 3,
         PI_COUNT = 3
     };
-    void aggregateBit(EPermIndex idx, BOOL allowed);
+    void aggregateBit(EPermIndex idx, bool allowed);
     void aggregateIndex(EPermIndex idx, U8 bits);
     static EPermIndex perm2PermIndex(PermissionBit bit);
 
diff --git a/indra/llinventory/llsaleinfo.cpp b/indra/llinventory/llsaleinfo.cpp
index d38ffcc4bf..98836b178e 100644
--- a/indra/llinventory/llsaleinfo.cpp
+++ b/indra/llinventory/llsaleinfo.cpp
@@ -66,7 +66,7 @@ LLSaleInfo::LLSaleInfo(EForSale sale_type, S32 sale_price) :
     mSalePrice = llclamp(mSalePrice, 0, S32_MAX);
 }
 
-BOOL LLSaleInfo::isForSale() const
+bool LLSaleInfo::isForSale() const
 {
     return (FS_NOT != mSaleType);
 }
@@ -78,13 +78,13 @@ U32 LLSaleInfo::getCRC32() const
     return rv;
 }
 
-BOOL LLSaleInfo::exportLegacyStream(std::ostream& output_stream) const
+bool LLSaleInfo::exportLegacyStream(std::ostream& output_stream) const
 {
     output_stream << "\tsale_info\t0\n\t{\n";
     output_stream << "\t\tsale_type\t" << lookup(mSaleType) << "\n";
     output_stream << "\t\tsale_price\t" << mSalePrice << "\n";
     output_stream <<"\t}\n";
-    return TRUE;
+    return true;
 }
 
 LLSD LLSaleInfo::asLLSD() const
@@ -95,7 +95,7 @@ LLSD LLSaleInfo::asLLSD() const
     return sd;
 }
 
-bool LLSaleInfo::fromLLSD(const LLSD& sd, BOOL& has_perm_mask, U32& perm_mask)
+bool LLSaleInfo::fromLLSD(const LLSD& sd, bool& has_perm_mask, U32& perm_mask)
 {
     const char *w;
 
@@ -113,22 +113,22 @@ bool LLSaleInfo::fromLLSD(const LLSD& sd, BOOL& has_perm_mask, U32& perm_mask)
     w = "perm_mask";
     if (sd.has(w))
     {
-        has_perm_mask = TRUE;
+        has_perm_mask = true;
         perm_mask = ll_U32_from_sd(sd[w]);
     }
     return true;
 }
 
-BOOL LLSaleInfo::importLegacyStream(std::istream& input_stream, BOOL& has_perm_mask, U32& perm_mask)
+bool LLSaleInfo::importLegacyStream(std::istream& input_stream, bool& has_perm_mask, U32& perm_mask)
 {
-    has_perm_mask = FALSE;
+    has_perm_mask = false;
 
     // *NOTE: Changing the buffer size will require changing the scanf
     // calls below.
     char buffer[MAX_STRING];    /* Flawfinder: ignore */
     char keyword[MAX_STRING];   /* Flawfinder: ignore */
     char valuestr[MAX_STRING];  /* Flawfinder: ignore */
-    BOOL success = TRUE;
+    bool success = true;
 
     keyword[0] = '\0';
     valuestr[0] = '\0';
@@ -163,7 +163,7 @@ BOOL LLSaleInfo::importLegacyStream(std::istream& input_stream, BOOL& has_perm_m
         else if (!strcmp("perm_mask", keyword))
         {
             //LL_INFOS() << "found deprecated keyword perm_mask" << LL_ENDL;
-            has_perm_mask = TRUE;
+            has_perm_mask = true;
             sscanf(valuestr, "%x", &perm_mask);
         }
         else
diff --git a/indra/llinventory/llsaleinfo.h b/indra/llinventory/llsaleinfo.h
index 961b6f4236..44eb841641 100644
--- a/indra/llinventory/llsaleinfo.h
+++ b/indra/llinventory/llsaleinfo.h
@@ -74,7 +74,7 @@ public:
     LLSaleInfo(EForSale sale_type, S32 sale_price);
 
     // accessors
-    BOOL isForSale() const;
+    bool isForSale() const;
     EForSale getSaleType() const { return mSaleType; }
     S32 getSalePrice() const { return mSalePrice; }
     U32 getCRC32() const;
@@ -84,11 +84,11 @@ public:
     void setSalePrice(S32 price);
     //void setNextOwnerPermMask(U32 mask)   { mNextOwnerPermMask = mask; }
 
-    BOOL exportLegacyStream(std::ostream& output_stream) const;
+    bool exportLegacyStream(std::ostream& output_stream) const;
     LLSD asLLSD() const;
     operator LLSD() const { return asLLSD(); }
-    bool fromLLSD(const LLSD& sd, BOOL& has_perm_mask, U32& perm_mask);
-    BOOL importLegacyStream(std::istream& input_stream, BOOL& has_perm_mask, U32& perm_mask);
+    bool fromLLSD(const LLSD& sd, bool& has_perm_mask, U32& perm_mask);
+    bool importLegacyStream(std::istream& input_stream, bool& has_perm_mask, U32& perm_mask);
 
     LLSD packMessage() const;
     void unpackMessage(LLSD sales);
diff --git a/indra/llinventory/llsettingsdaycycle.cpp b/indra/llinventory/llsettingsdaycycle.cpp
index ef6a187d06..2ff1cc74c6 100644
--- a/indra/llinventory/llsettingsdaycycle.cpp
+++ b/indra/llinventory/llsettingsdaycycle.cpp
@@ -111,10 +111,10 @@ const LLSettingsDay::Seconds LLSettingsDay::MINIMUM_DAYOFFSET(0);
 const LLSettingsDay::Seconds LLSettingsDay::DEFAULT_DAYOFFSET(57600);  // +16 hours == -8 hours (SLT time offset)
 const LLSettingsDay::Seconds LLSettingsDay::MAXIMUM_DAYOFFSET(86400);  // 24 hours
 
-const S32 LLSettingsDay::TRACK_WATER(0);   // water track is 0
-const S32 LLSettingsDay::TRACK_GROUND_LEVEL(1);
-const S32 LLSettingsDay::TRACK_MAX(5);     // 5 tracks, 4 skys, 1 water
-const S32 LLSettingsDay::FRAME_MAX(56);
+const U32 LLSettingsDay::TRACK_WATER(0);   // water track is 0
+const U32 LLSettingsDay::TRACK_GROUND_LEVEL(1);
+const U32 LLSettingsDay::TRACK_MAX(5);     // 5 tracks, 4 skys, 1 water
+const U32 LLSettingsDay::FRAME_MAX(56);
 
 const F32 LLSettingsDay::DEFAULT_FRAME_SLOP_FACTOR(0.02501f);
 
@@ -462,7 +462,7 @@ namespace
         // Trim extra tracks.
         while (value.size() > LLSettingsDay::TRACK_MAX)
         {
-            value.erase(value.size() - 1);
+            value.erase(static_cast<LLSD::Integer>(value.size()) - 1);
         }
 
         S32 framecount(0);
@@ -511,7 +511,7 @@ namespace
 
         }
 
-        int waterTracks = value[0].size();
+        int waterTracks = static_cast<int>(value[0].size());
         int skyTracks   = framecount - waterTracks;
 
         if (waterTracks < 1)
diff --git a/indra/llinventory/llsettingsdaycycle.h b/indra/llinventory/llsettingsdaycycle.h
index 4a46eba6fe..917b0870f2 100644
--- a/indra/llinventory/llsettingsdaycycle.h
+++ b/indra/llinventory/llsettingsdaycycle.h
@@ -59,10 +59,10 @@ public:
     static const Seconds DEFAULT_DAYOFFSET;
     static const Seconds MAXIMUM_DAYOFFSET;
 
-    static const S32     TRACK_WATER;
-    static const S32     TRACK_GROUND_LEVEL;
-    static const S32     TRACK_MAX;
-    static const S32     FRAME_MAX;
+    static const U32     TRACK_WATER;
+    static const U32     TRACK_GROUND_LEVEL;
+    static const U32     TRACK_MAX;
+    static const U32     FRAME_MAX;
 
     static const F32     DEFAULT_FRAME_SLOP_FACTOR;
 
diff --git a/indra/llinventory/llsettingssky.h b/indra/llinventory/llsettingssky.h
index 222ab040cb..40bb337a48 100644
--- a/indra/llinventory/llsettingssky.h
+++ b/indra/llinventory/llsettingssky.h
@@ -62,7 +62,7 @@ public:
     static const std::string SETTING_DOME_OFFSET;
     static const std::string SETTING_DOME_RADIUS;
     static const std::string SETTING_GAMMA;
-    static const std::string SETTING_GLOW;    
+    static const std::string SETTING_GLOW;
     static const std::string SETTING_LIGHT_NORMAL;
     static const std::string SETTING_MAX_Y;
     static const std::string SETTING_MOON_ROTATION;
@@ -92,7 +92,7 @@ public:
         static const std::string SETTING_DENSITY_PROFILE_EXP_SCALE_FACTOR;
         static const std::string SETTING_DENSITY_PROFILE_LINEAR_TERM;
         static const std::string SETTING_DENSITY_PROFILE_CONSTANT_TERM;
-        
+
     static const std::string SETTING_SKY_MOISTURE_LEVEL;
     static const std::string SETTING_SKY_DROPLET_RADIUS;
     static const std::string SETTING_SKY_ICE_LEVEL;
@@ -117,7 +117,7 @@ public:
     virtual std::string getSettingsType() const SETTINGS_OVERRIDE { return std::string("sky"); }
     virtual LLSettingsType::type_e getSettingsTypeValue() const SETTINGS_OVERRIDE { return LLSettingsType::ST_SKY; }
 
-    // Settings status 
+    // Settings status
     virtual void blend(const LLSettingsBase::ptr_t &end, F64 blendf) SETTINGS_OVERRIDE;
 
     virtual void replaceSettings(LLSD settings) SETTINGS_OVERRIDE;
@@ -129,7 +129,7 @@ public:
     F32 getSkyBottomRadius() const;
     F32 getSkyTopRadius() const;
     F32 getSunArcRadians() const;
-    F32 getMieAnisotropy() const;   
+    F32 getMieAnisotropy() const;
 
     F32 getSkyMoistureLevel() const;
     F32 getSkyDropletRadius() const;
@@ -196,7 +196,7 @@ public:
 
     F32 getCloudShadow() const;
     void setCloudShadow(F32 val);
-    
+
     F32 getCloudVariance() const;
     void setCloudVariance(F32 val);
 
@@ -295,7 +295,7 @@ public:
 
     // color based on brightness
     LLColor3  getMoonlightColor() const;
-    
+
     LLColor4  getMoonAmbient() const;
     LLColor3  getMoonDiffuse() const;
     LLColor4  getSunAmbient() const;
diff --git a/indra/llinventory/lltransactionflags.cpp b/indra/llinventory/lltransactionflags.cpp
index fc3e684a65..3719a295c3 100644
--- a/indra/llinventory/lltransactionflags.cpp
+++ b/indra/llinventory/lltransactionflags.cpp
@@ -38,7 +38,7 @@ const U8 TRANSACTION_FLAG_OWNER_GROUP = 4;
 const U8 TRANSACTION_FLAG_SIMULTANEOUS_CONTRIBUTION = 8;
 const U8 TRANSACTION_FLAG_SIMULTANEOUS_CONTRIBUTION_REMOVAL = 16;
 
-U8 pack_transaction_flags(BOOL is_source_group, BOOL is_dest_group)
+U8 pack_transaction_flags(bool is_source_group, bool is_dest_group)
 {
     U8 rv = 0;
     if(is_source_group) rv |= TRANSACTION_FLAG_SOURCE_GROUP;
@@ -46,17 +46,17 @@ U8 pack_transaction_flags(BOOL is_source_group, BOOL is_dest_group)
     return rv;
 }
 
-BOOL is_tf_source_group(TransactionFlags flags)
+bool is_tf_source_group(TransactionFlags flags)
 {
     return ((flags & TRANSACTION_FLAG_SOURCE_GROUP) == TRANSACTION_FLAG_SOURCE_GROUP);
 }
 
-BOOL is_tf_dest_group(TransactionFlags flags)
+bool is_tf_dest_group(TransactionFlags flags)
 {
     return ((flags & TRANSACTION_FLAG_DEST_GROUP) == TRANSACTION_FLAG_DEST_GROUP);
 }
 
-BOOL is_tf_owner_group(TransactionFlags flags)
+bool is_tf_owner_group(TransactionFlags flags)
 {
     return ((flags & TRANSACTION_FLAG_OWNER_GROUP) == TRANSACTION_FLAG_OWNER_GROUP);
 }
@@ -79,6 +79,7 @@ void append_reason(
         break;
     case TRANS_GROUP_LAND_DEED:
         ostr << " for deeding land";
+        break;
     default:
         break;
     }
diff --git a/indra/llinventory/lltransactionflags.h b/indra/llinventory/lltransactionflags.h
index bb267ad2be..3c61b785a3 100644
--- a/indra/llinventory/lltransactionflags.h
+++ b/indra/llinventory/lltransactionflags.h
@@ -39,10 +39,10 @@ extern const TransactionFlags TRANSACTION_FLAG_SIMULTANEOUS_CONTRIBUTION;
 extern const TransactionFlags TRANSACTION_FLAG_SIMULTANEOUS_CONTRIBUTION_REMOVAL;
 
 // very simple helper functions
-TransactionFlags pack_transaction_flags(BOOL is_source_group, BOOL is_dest_group);
-BOOL is_tf_source_group(TransactionFlags flags);
-BOOL is_tf_dest_group(TransactionFlags flags);
-BOOL is_tf_owner_group(TransactionFlags flags);
+TransactionFlags pack_transaction_flags(bool is_source_group, bool is_dest_group);
+bool is_tf_source_group(TransactionFlags flags);
+bool is_tf_dest_group(TransactionFlags flags);
+bool is_tf_owner_group(TransactionFlags flags);
 
 // stupid helper functions which should be replaced with some kind of
 // internationalizeable message.
diff --git a/indra/llinventory/tests/inventorymisc_test.cpp b/indra/llinventory/tests/inventorymisc_test.cpp
index a2a6aa339f..bcf6131bd8 100644
--- a/indra/llinventory/tests/inventorymisc_test.cpp
+++ b/indra/llinventory/tests/inventorymisc_test.cpp
@@ -374,7 +374,7 @@ namespace tut
         LLPointer<LLInventoryItem> src1 = create_random_inventory_item();
 
         std::ostringstream ostream;
-        src1->exportLegacyStream(ostream, TRUE);
+        src1->exportLegacyStream(ostream, true);
 
         std::istringstream istream(ostream.str());
         LLPointer<LLInventoryItem> src2 = new LLInventoryItem();
@@ -496,7 +496,7 @@ namespace tut
         LLPointer<LLInventoryCategory> src1 = create_random_inventory_cat();
 
         std::ostringstream ostream;
-        src1->exportLegacyStream(ostream, TRUE);
+        src1->exportLegacyStream(ostream, true);
 
         std::istringstream istream(ostream.str());
         LLPointer<LLInventoryCategory> src2 = new LLInventoryCategory();
diff --git a/indra/llkdu/llimagej2ckdu.cpp b/indra/llkdu/llimagej2ckdu.cpp
index c51650a470..bf7cfbe071 100644
--- a/indra/llkdu/llimagej2ckdu.cpp
+++ b/indra/llkdu/llimagej2ckdu.cpp
@@ -277,6 +277,8 @@ void transfer_bytes(kdu_byte *dest, kdu_line_buf &src, int gap, int precision);
 // as well, when that still existed, with keep_codestream true and MODE_FAST.
 void LLImageJ2CKDU::setupCodeStream(LLImageJ2C &base, bool keep_codestream, ECodeStreamMode mode)
 {
+    LLImageDataLock lock(&base);
+
     S32 data_size = base.getDataSize();
     S32 max_bytes = (base.getMaxBytes() ? base.getMaxBytes() : data_size);
 
@@ -512,8 +514,13 @@ bool LLImageJ2CKDU::initDecode(LLImageJ2C &base, LLImageRaw &raw_image, F32 deco
 bool LLImageJ2CKDU::decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 decode_time, S32 first_channel, S32 max_channel_count)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
+
+    LLImageDataLock lockIn(&base);
+    LLImageDataLock lockOut(&raw_image);
+
     ECodeStreamMode mode = MODE_FAST;
 
+    bool limit_time = decode_time > 0.0f;
     LLTimer decode_timer;
 
     if (!mCodeStreamp->exists())
@@ -528,7 +535,7 @@ bool LLImageJ2CKDU::decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 deco
 
     // These can probably be grabbed from what's saved in the class.
     kdu_dims dims;
-    mCodeStreamp->get_dims(0,dims);
+    mCodeStreamp->get_dims(0, dims);
 
     // Now we are ready to walk through the tiles processing them one-by-one.
     kdu_byte *buffer = raw_image.getData();
@@ -578,16 +585,18 @@ bool LLImageJ2CKDU::decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 deco
                                                             mCodeStreamp.get()));
                 }
                 // Do the actual processing
-                F32 remaining_time = decode_time - decode_timer.getElapsedTimeF32();
+                F32 remaining_time = limit_time ? decode_time - decode_timer.getElapsedTimeF32().value() : 0.0f;
                 // This is where we do the actual decode.  If we run out of time, return false.
-                if (mDecodeState->processTileDecode(remaining_time, (decode_time > 0.0f)))
+                if (mDecodeState->processTileDecode(remaining_time, limit_time))
                 {
                     mDecodeState.reset();
                 }
                 else
                 {
                     // Not finished decoding yet.
-                    //                  setLastError("Ran out of time while decoding");
+                    base.setLastError("Ran out of time while decoding");
+                    base.decodeFailed();
+                    cleanupCodeStream();
                     return false;
                 }
             }
diff --git a/indra/llmath/llbbox.cpp b/indra/llmath/llbbox.cpp
index c4dffc8cf8..fa1253e421 100644
--- a/indra/llmath/llbbox.cpp
+++ b/indra/llmath/llbbox.cpp
@@ -38,7 +38,7 @@ void LLBBox::addPointLocal(const LLVector3& p)
     {
         mMinLocal = p;
         mMaxLocal = p;
-        mEmpty = FALSE;
+        mEmpty = false;
     }
     else
     {
@@ -140,7 +140,7 @@ LLVector3 LLBBox::agentToLocalBasis(const LLVector3& v) const
     return v * m;
 }
 
-BOOL LLBBox::containsPointLocal(const LLVector3& p) const
+bool LLBBox::containsPointLocal(const LLVector3& p) const
 {
     if (  (p.mV[VX] < mMinLocal.mV[VX])
         ||(p.mV[VX] > mMaxLocal.mV[VX])
@@ -149,12 +149,12 @@ BOOL LLBBox::containsPointLocal(const LLVector3& p) const
         ||(p.mV[VZ] < mMinLocal.mV[VZ])
         ||(p.mV[VZ] > mMaxLocal.mV[VZ]))
     {
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLBBox::containsPointAgent(const LLVector3& p) const
+bool LLBBox::containsPointAgent(const LLVector3& p) const
 {
     LLVector3 point_local = agentToLocal(p);
     return containsPointLocal(point_local);
diff --git a/indra/llmath/llbbox.h b/indra/llmath/llbbox.h
index aac8628762..5617eaebde 100644
--- a/indra/llmath/llbbox.h
+++ b/indra/llmath/llbbox.h
@@ -37,13 +37,13 @@
 class LLBBox
 {
 public:
-    LLBBox() {mEmpty = TRUE;}
+    LLBBox() {mEmpty = true;}
     LLBBox( const LLVector3& pos_agent,
         const LLQuaternion& rot,
         const LLVector3& min_local,
         const LLVector3& max_local )
         :
-        mMinLocal( min_local ), mMaxLocal( max_local ), mPosAgent(pos_agent), mRotation( rot), mEmpty( TRUE )
+        mMinLocal( min_local ), mMaxLocal( max_local ), mPosAgent(pos_agent), mRotation( rot), mEmpty( true )
         {}
 
     // Default copy constructor is OK.
@@ -64,8 +64,8 @@ public:
 
     LLVector3           getExtentLocal() const              { return mMaxLocal - mMinLocal; }
 
-    BOOL                containsPointLocal(const LLVector3& p) const;
-    BOOL                containsPointAgent(const LLVector3& p) const;
+    bool                containsPointLocal(const LLVector3& p) const;
+    bool                containsPointAgent(const LLVector3& p) const;
 
     void                addPointAgent(LLVector3 p);
     void                addBBoxAgent(const LLBBox& b);
@@ -92,7 +92,7 @@ private:
     LLVector3           mMaxLocal;
     LLVector3           mPosAgent;  // Position relative to Agent's Region
     LLQuaternion        mRotation;
-    BOOL                mEmpty;     // Nothing has been added to this bbox yet
+    bool                mEmpty;     // Nothing has been added to this bbox yet
 };
 
 //LLBBox operator*(const LLBBox &a, const LLMatrix4 &b);
diff --git a/indra/llmath/llcoordframe.h b/indra/llmath/llcoordframe.h
index 802b98425a..aaa701f792 100644
--- a/indra/llmath/llcoordframe.h
+++ b/indra/llmath/llcoordframe.h
@@ -61,7 +61,7 @@ public:
     //LLCoordFrame(const F32 *origin, const F32 *rotation); // Assumes "origin" is 1x3 and "rotation" is 1x9 array
     //LLCoordFrame(const F32 *origin_and_rotation);         // Assumes "origin_and_rotation" is 1x12 array
 
-    BOOL isFinite() { return mOrigin.isFinite() && mXAxis.isFinite() && mYAxis.isFinite() && mZAxis.isFinite(); }
+    bool isFinite() { return mOrigin.isFinite() && mXAxis.isFinite() && mYAxis.isFinite() && mZAxis.isFinite(); }
 
     void reset();
     void resetAxes();
diff --git a/indra/llmath/llinterp.h b/indra/llmath/llinterp.h
index 116e949663..f4faa82a82 100644
--- a/indra/llmath/llinterp.h
+++ b/indra/llmath/llinterp.h
@@ -41,7 +41,6 @@ class LLInterpVal
 {
 public:
     virtual ~LLInterpVal() {}
-    virtual void interp(LLInterpVal &target, const F32 frac); // Linear interpolation for each type
 };
 
 template <typename Type>
@@ -52,7 +51,7 @@ public:
     virtual ~LLInterp() {}
 
     virtual void start();
-    void update(const F32 time);
+    virtual void update(const F32 time) = 0;
     const Type &getCurVal() const;
 
     void setStartVal(const Type &start_val);
@@ -67,15 +66,15 @@ public:
     void setEndTime(const F32 time);
     F32 getEndTime() const;
 
-    BOOL isActive() const;
-    BOOL isDone() const;
+    bool isActive() const;
+    bool isDone() const;
 
 protected:
     F32 mStartTime;
     F32 mEndTime;
     F32 mDuration;
-    BOOL mActive;
-    BOOL mDone;
+    bool mActive;
+    bool mDone;
 
     Type mStartVal;
     Type mEndVal;
@@ -88,8 +87,8 @@ template <typename Type>
 class LLInterpLinear : public LLInterp<Type>
 {
 public:
-    /*virtual*/ void start();
-    void update(const F32 time);
+    void start() override;
+    void update(const F32 time) override;
     F32 getCurFrac() const;
 protected:
     F32 mCurFrac;
@@ -108,10 +107,10 @@ class LLInterpAttractor : public LLInterp<Type>
 {
 public:
     LLInterpAttractor();
-    /*virtual*/ void start();
+    void start() override;
     void setStartVel(const Type &vel);
     void setForce(const F32 force);
-    void update(const F32 time);
+    void update(const F32 time) override;
 protected:
     F32 mForce;
     Type mStartVel;
@@ -123,7 +122,7 @@ class LLInterpFunc : public LLInterp<Type>
 {
 public:
     LLInterpFunc();
-    void update(const F32 time);
+    void update(const F32 time) override;
 
     void setFunc(Type (*)(const F32, void *data), void *data);
 protected:
@@ -151,8 +150,8 @@ LLInterp<Type>::LLInterp()
     mEndTime = 1.f;
     mDuration = 1.f;
     mCurTime = 0.f;
-    mDone = FALSE;
-    mActive = FALSE;
+    mDone = false;
+    mActive = false;
 }
 
 template <class Type>
@@ -166,8 +165,8 @@ void LLInterp<Type>::start()
 {
     mCurVal = mStartVal;
     mCurTime = mStartTime;
-    mDone = FALSE;
-    mActive = FALSE;
+    mDone = false;
+    mActive = false;
 }
 
 template <class Type>
@@ -225,13 +224,13 @@ F32 LLInterp<Type>::getEndTime() const
 
 
 template <class Type>
-BOOL LLInterp<Type>::isDone() const
+bool LLInterp<Type>::isDone() const
 {
     return mDone;
 }
 
 template <class Type>
-BOOL LLInterp<Type>::isActive() const
+bool LLInterp<Type>::isActive() const
 {
     return mActive;
 }
@@ -254,7 +253,7 @@ void LLInterpLinear<Type>::update(const F32 time)
     F32 dfrac = target_frac - this->mCurFrac;
     if (target_frac >= 0.f)
     {
-        this->mActive = TRUE;
+        this->mActive = true;
     }
 
     if (target_frac > 1.f)
@@ -262,7 +261,7 @@ void LLInterpLinear<Type>::update(const F32 time)
         this->mCurVal = this->mEndVal;
         this->mCurFrac = 1.f;
         this->mCurTime = time;
-        this->mDone = TRUE;
+        this->mDone = true;
         return;
     }
 
@@ -332,7 +331,7 @@ void LLInterpAttractor<Type>::update(const F32 time)
 {
     if (time > this->mStartTime)
     {
-        this->mActive = TRUE;
+        this->mActive = true;
     }
     else
     {
@@ -340,7 +339,7 @@ void LLInterpAttractor<Type>::update(const F32 time)
     }
     if (time > this->mEndTime)
     {
-        this->mDone = TRUE;
+        this->mDone = true;
         return;
     }
 
@@ -362,8 +361,8 @@ void LLInterpAttractor<Type>::update(const F32 time)
 template <class Type>
 LLInterpFunc<Type>::LLInterpFunc() : LLInterp<Type>()
 {
-    mFunc = NULL;
-    mData = NULL;
+    mFunc = nullptr;
+    mData = nullptr;
 }
 
 template <class Type>
@@ -378,7 +377,7 @@ void LLInterpFunc<Type>::update(const F32 time)
 {
     if (time > this->mStartTime)
     {
-        this->mActive = TRUE;
+        this->mActive = true;
     }
     else
     {
@@ -386,7 +385,7 @@ void LLInterpFunc<Type>::update(const F32 time)
     }
     if (time > this->mEndTime)
     {
-        this->mDone = TRUE;
+        this->mDone = true;
         return;
     }
 
@@ -405,7 +404,7 @@ void LLInterpExp<Type>::update(const F32 time)
     F32 target_frac = (time - this->mStartTime) / this->mDuration;
     if (target_frac >= 0.f)
     {
-        this->mActive = TRUE;
+        this->mActive = true;
     }
 
     if (target_frac > 1.f)
@@ -413,7 +412,7 @@ void LLInterpExp<Type>::update(const F32 time)
         this->mCurVal = this->mEndVal;
         this->mCurFrac = 1.f;
         this->mCurTime = time;
-        this->mDone = TRUE;
+        this->mDone = true;
         return;
     }
 
diff --git a/indra/llmath/llmath.h b/indra/llmath/llmath.h
index f425b590e4..fa315291a3 100644
--- a/indra/llmath/llmath.h
+++ b/indra/llmath/llmath.h
@@ -59,34 +59,34 @@
 #define tanf(x)     ((F32)tan((F64)(x)))
 #endif*/
 
-const F32   GRAVITY         = -9.8f;
+constexpr F32   GRAVITY         = -9.8f;
 
 // mathematical constants
-const F32   F_PI        = 3.1415926535897932384626433832795f;
-const F32   F_TWO_PI    = 6.283185307179586476925286766559f;
-const F32   F_PI_BY_TWO = 1.5707963267948966192313216916398f;
-const F32   F_SQRT_TWO_PI = 2.506628274631000502415765284811f;
-const F32   F_E         = 2.71828182845904523536f;
-const F32   F_SQRT2     = 1.4142135623730950488016887242097f;
-const F32   F_SQRT3     = 1.73205080756888288657986402541f;
-const F32   OO_SQRT2    = 0.7071067811865475244008443621049f;
-const F32   OO_SQRT3    = 0.577350269189625764509f;
-const F32   DEG_TO_RAD  = 0.017453292519943295769236907684886f;
-const F32   RAD_TO_DEG  = 57.295779513082320876798154814105f;
-const F32   F_APPROXIMATELY_ZERO = 0.00001f;
-const F32   F_LN10      = 2.3025850929940456840179914546844f;
-const F32   OO_LN10     = 0.43429448190325182765112891891661;
-const F32   F_LN2       = 0.69314718056f;
-const F32   OO_LN2      = 1.4426950408889634073599246810019f;
-
-const F32   F_ALMOST_ZERO   = 0.0001f;
-const F32   F_ALMOST_ONE    = 1.0f - F_ALMOST_ZERO;
-
-const F32   GIMBAL_THRESHOLD = 0.000436f; // sets the gimballock threshold 0.025 away from +/-90 degrees
+constexpr F32   F_PI        = 3.1415926535897932384626433832795f;
+constexpr F32   F_TWO_PI    = 6.283185307179586476925286766559f;
+constexpr F32   F_PI_BY_TWO = 1.5707963267948966192313216916398f;
+constexpr F32   F_SQRT_TWO_PI = 2.506628274631000502415765284811f;
+constexpr F32   F_E         = 2.71828182845904523536f;
+constexpr F32   F_SQRT2     = 1.4142135623730950488016887242097f;
+constexpr F32   F_SQRT3     = 1.73205080756888288657986402541f;
+constexpr F32   OO_SQRT2    = 0.7071067811865475244008443621049f;
+constexpr F32   OO_SQRT3    = 0.577350269189625764509f;
+constexpr F32   DEG_TO_RAD  = 0.017453292519943295769236907684886f;
+constexpr F32   RAD_TO_DEG  = 57.295779513082320876798154814105f;
+constexpr F32   F_APPROXIMATELY_ZERO = 0.00001f;
+constexpr F32   F_LN10      = 2.3025850929940456840179914546844f;
+constexpr F32   OO_LN10     = 0.43429448190325182765112891891661;
+constexpr F32   F_LN2       = 0.69314718056f;
+constexpr F32   OO_LN2      = 1.4426950408889634073599246810019f;
+
+constexpr F32   F_ALMOST_ZERO   = 0.0001f;
+constexpr F32   F_ALMOST_ONE    = 1.0f - F_ALMOST_ZERO;
+
+constexpr F32   GIMBAL_THRESHOLD = 0.000436f; // sets the gimballock threshold 0.025 away from +/-90 degrees
 // formula: GIMBAL_THRESHOLD = sin(DEG_TO_RAD * gimbal_threshold_angle);
 
 // BUG: Eliminate in favor of F_APPROXIMATELY_ZERO above?
-const F32 FP_MAG_THRESHOLD = 0.0000001f;
+constexpr F32 FP_MAG_THRESHOLD = 0.0000001f;
 
 // TODO: Replace with logic like is_approx_equal
 inline bool is_approx_zero( F32 f ) { return (-F_APPROXIMATELY_ZERO < f) && (f < F_APPROXIMATELY_ZERO); }
@@ -123,13 +123,13 @@ inline bool is_zero(F32 x)
 
 inline bool is_approx_equal(F32 x, F32 y)
 {
-    const S32 COMPARE_MANTISSA_UP_TO_BIT = 0x02;
+    constexpr S32 COMPARE_MANTISSA_UP_TO_BIT = 0x02;
     return (std::abs((S32) ((U32&)x - (U32&)y) ) < COMPARE_MANTISSA_UP_TO_BIT);
 }
 
 inline bool is_approx_equal(F64 x, F64 y)
 {
-    const S64 COMPARE_MANTISSA_UP_TO_BIT = 0x02;
+    constexpr S64 COMPARE_MANTISSA_UP_TO_BIT = 0x02;
     return (std::abs((S32) ((U64&)x - (U64&)y) ) < COMPARE_MANTISSA_UP_TO_BIT);
 }
 
@@ -272,8 +272,8 @@ inline F64 ll_round( F64 val, F64 nearest )
 // peak error = -31.4 dB
 // RMS  error = -28.1 dB
 
-const F32 FAST_MAG_ALPHA = 0.960433870103f;
-const F32 FAST_MAG_BETA = 0.397824734759f;
+constexpr F32 FAST_MAG_ALPHA = 0.960433870103f;
+constexpr F32 FAST_MAG_BETA = 0.397824734759f;
 
 // these provide minimum RMS error
 //
@@ -281,8 +281,8 @@ const F32 FAST_MAG_BETA = 0.397824734759f;
 // peak error = -32.6 dB
 // RMS  error = -25.7 dB
 //
-//const F32 FAST_MAG_ALPHA = 0.948059448969f;
-//const F32 FAST_MAG_BETA = 0.392699081699f;
+//constexpr F32 FAST_MAG_ALPHA = 0.948059448969f;
+//constexpr F32 FAST_MAG_BETA = 0.392699081699f;
 
 inline F32 fastMagnitude(F32 a, F32 b)
 {
@@ -299,8 +299,8 @@ inline F32 fastMagnitude(F32 a, F32 b)
 //
 // Culled from www.stereopsis.com/FPU.html
 
-const F64 LL_DOUBLE_TO_FIX_MAGIC    = 68719476736.0*1.5;     //2^36 * 1.5,  (52-_shiftamt=36) uses limited precisicion to floor
-const S32 LL_SHIFT_AMOUNT           = 16;                    //16.16 fixed point representation,
+constexpr F64 LL_DOUBLE_TO_FIX_MAGIC    = 68719476736.0*1.5;     //2^36 * 1.5,  (52-_shiftamt=36) uses limited precisicion to floor
+constexpr S32 LL_SHIFT_AMOUNT           = 16;                    //16.16 fixed point representation,
 
 // Endian dependent code
 #ifdef LL_LITTLE_ENDIAN
@@ -517,7 +517,7 @@ inline void ll_remove_outliers(std::vector<VEC_TYPE>& data, F32 k)
         i++;
     }
 
-    S32 j = data.size()-1;
+    size_t j = data.size()-1;
     while (j > 0 && data[j] > max)
     {
         j--;
diff --git a/indra/llmath/llmatrix4a.h b/indra/llmath/llmatrix4a.h
index cf4e522467..3b423f783a 100644
--- a/indra/llmath/llmatrix4a.h
+++ b/indra/llmath/llmatrix4a.h
@@ -46,6 +46,34 @@ public:
         loadu(val);
     }
 
+    explicit LLMatrix4a(const F32* val)
+    {
+        loadu(val);
+    }
+
+    static const LLMatrix4a& identity()
+    {
+        static const F32 v[] =
+        {   1.f, 0.f, 0.f, 0.f,
+            0.f, 1.f, 0.f, 0.f,
+            0.f, 0.f, 1.f, 0.f,
+            0.f, 0.f, 0.f, 1.f
+        };
+        static LLMatrix4a identity_mat(v);
+
+        return identity_mat;
+    }
+
+    bool operator==(const LLMatrix4a& rhs) const
+    {
+        return mMatrix[0] == rhs.mMatrix[0] && mMatrix[1] == rhs.mMatrix[1] && mMatrix[2] == rhs.mMatrix[2] && mMatrix[3] == rhs.mMatrix[3];
+    }
+
+    bool operator!=(const LLMatrix4a& rhs) const
+    {
+        return !(*this == rhs);
+    }
+
     inline F32* getF32ptr()
     {
         return (F32*) &mMatrix;
diff --git a/indra/llmath/lloctree.h b/indra/llmath/lloctree.h
index 88ba006269..eaa2763d2d 100644
--- a/indra/llmath/lloctree.h
+++ b/indra/llmath/lloctree.h
@@ -453,7 +453,7 @@ public:
 
         S32 i = data->getBinIndex();
 
-        if (i >= 0 && i < getElementCount())
+        if (i >= 0 && i < (S32)getElementCount())
         {
             if (mData[i] == data)
             { //found it
@@ -548,7 +548,7 @@ public:
         }
     }
 
-    void addChild(oct_node* child, BOOL silent = FALSE)
+    void addChild(oct_node* child, bool silent = false)
     {
 #if LL_OCTREE_PARANOIA_CHECK
 
@@ -591,7 +591,7 @@ public:
         }
     }
 
-    void removeChild(S32 index, BOOL destroy = FALSE)
+    void removeChild(S32 index, bool destroy = false)
     {
         for (U32 i = 0; i < this->getListenerCount(); i++)
         {
@@ -638,7 +638,7 @@ public:
         {
             if (getChild(i) == node)
             {
-                removeChild(i, TRUE);
+                removeChild(i, true);
                 return;
             }
         }
@@ -707,7 +707,7 @@ public:
             //(don't notify listeners of addition)
             for (U32 i = 0; i < child->getChildCount(); i++)
             {
-                this->addChild(child->getChild(i), TRUE);
+                this->addChild(child->getChild(i), true);
             }
 
             //destroy child
@@ -723,7 +723,7 @@ public:
     // LLOctreeRoot::insert
     bool insert(T* data) override
     {
-        if (data == NULL)
+        if (data == nullptr)
         {
             OCT_ERRS << "!!! INVALID ELEMENT ADDED TO OCTREE ROOT !!!" << LL_ENDL;
             return false;
diff --git a/indra/llmath/llquaternion.cpp b/indra/llmath/llquaternion.cpp
index ce0a88c26f..aefb82b2f0 100644
--- a/indra/llmath/llquaternion.cpp
+++ b/indra/llmath/llquaternion.cpp
@@ -653,14 +653,14 @@ LLQuaternion slerp( F32 u, const LLQuaternion &a, const LLQuaternion &b )
     F32 cos_t = a.mQ[0]*b.mQ[0] + a.mQ[1]*b.mQ[1] + a.mQ[2]*b.mQ[2] + a.mQ[3]*b.mQ[3];
 
     // if b is on opposite hemisphere from a, use -a instead
-    int bflip;
+    bool bflip;
     if (cos_t < 0.0f)
     {
         cos_t = -cos_t;
-        bflip = TRUE;
+        bflip = true;
     }
     else
-        bflip = FALSE;
+        bflip = false;
 
     // if B is (within precision limits) the same as A,
     // just linear interpolate between A and B.
@@ -959,11 +959,11 @@ void LLQuaternion::unpackFromVector3( const LLVector3& vec )
     }
 }
 
-BOOL LLQuaternion::parseQuat(const std::string& buf, LLQuaternion* value)
+bool LLQuaternion::parseQuat(const std::string& buf, LLQuaternion* value)
 {
     if( buf.empty() || value == NULL)
     {
-        return FALSE;
+        return false;
     }
 
     LLQuaternion quat;
@@ -971,10 +971,10 @@ BOOL LLQuaternion::parseQuat(const std::string& buf, LLQuaternion* value)
     if( 4 == count )
     {
         value->set( quat );
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 
diff --git a/indra/llmath/llquaternion.h b/indra/llmath/llquaternion.h
index be7f119a2b..6136c59ed1 100644
--- a/indra/llmath/llquaternion.h
+++ b/indra/llmath/llquaternion.h
@@ -69,9 +69,9 @@ public:
     LLSD getValue() const;
     void setValue(const LLSD& sd);
 
-    BOOL isIdentity() const;
-    BOOL isNotIdentity() const;
-    BOOL isFinite() const;                                  // checks to see if all values of LLQuaternion are finite
+    bool isIdentity() const;
+    bool isNotIdentity() const;
+    bool isFinite() const;                                  // checks to see if all values of LLQuaternion are finite
     void quantize16(F32 lower, F32 upper);                  // changes the vector to reflect quatization
     void quantize8(F32 lower, F32 upper);                           // changes the vector to reflect quatization
     void loadIdentity();                                            // Loads the quaternion that represents the identity rotation
@@ -168,7 +168,7 @@ public:
     friend const char *OrderToString( const Order order );
     friend Order StringToOrder( const char *str );
 
-    static BOOL parseQuat(const std::string& buf, LLQuaternion* value);
+    static bool parseQuat(const std::string& buf, LLQuaternion* value);
 
     // For debugging, only
     //static U32 mMultCount;
@@ -193,12 +193,12 @@ inline void LLQuaternion::setValue(const LLSD& sd)
 }
 
 // checker
-inline BOOL LLQuaternion::isFinite() const
+inline bool LLQuaternion::isFinite() const
 {
     return (llfinite(mQ[VX]) && llfinite(mQ[VY]) && llfinite(mQ[VZ]) && llfinite(mQ[VS]));
 }
 
-inline BOOL LLQuaternion::isIdentity() const
+inline bool LLQuaternion::isIdentity() const
 {
     return
         ( mQ[VX] == 0.f ) &&
@@ -207,7 +207,7 @@ inline BOOL LLQuaternion::isIdentity() const
         ( mQ[VS] == 1.f );
 }
 
-inline BOOL LLQuaternion::isNotIdentity() const
+inline bool LLQuaternion::isNotIdentity() const
 {
     return
         ( mQ[VX] != 0.f ) ||
diff --git a/indra/llmath/llrect.h b/indra/llmath/llrect.h
index 6c872611ba..317578da06 100644
--- a/indra/llmath/llrect.h
+++ b/indra/llmath/llrect.h
@@ -83,14 +83,14 @@ public:
     }
 
     // Note: follows GL_QUAD conventions: the top and right edges are not considered part of the rect
-    BOOL        pointInRect(const Type x, const Type y) const
+    bool        pointInRect(const Type x, const Type y) const
     {
         return  mLeft <= x && x < mRight &&
                 mBottom <= y && y < mTop;
     }
 
     //// Note: follows GL_QUAD conventions: the top and right edges are not considered part of the rect
-    BOOL        localPointInRect(const Type x, const Type y) const
+    bool        localPointInRect(const Type x, const Type y) const
     {
         return  0 <= x && x < getWidth() &&
                 0 <= y && y < getHeight();
@@ -137,8 +137,8 @@ public:
     }
 
     // Note: Does NOT follow GL_QUAD conventions: the top and right edges ARE considered part of the rect
-    // returns TRUE if any part of rect is is inside this LLRect
-    BOOL        overlaps(const LLRectBase& rect) const
+    // returns true if any part of rect is is inside this LLRect
+    bool        overlaps(const LLRectBase& rect) const
     {
         return !(mLeft > rect.mRight
             || mRight < rect.mLeft
@@ -146,7 +146,7 @@ public:
             || mTop < rect.mBottom);
     }
 
-    BOOL        contains(const LLRectBase& rect) const
+    bool        contains(const LLRectBase& rect) const
     {
         return mLeft <= rect.mLeft
             && mRight >= rect.mRight
diff --git a/indra/llmath/llsimdtypes.h b/indra/llmath/llsimdtypes.h
index 9db152adf8..11462170fb 100644
--- a/indra/llmath/llsimdtypes.h
+++ b/indra/llmath/llsimdtypes.h
@@ -60,7 +60,7 @@ public:
     inline operator bool() const { return static_cast<const bool&>(m_bool); }
 
 private:
-    int m_bool;
+    int m_bool{ 0 };
 };
 
 #if LL_WINDOWS
@@ -118,7 +118,7 @@ public:
     }
 
 private:
-    LLQuad mQ;
+    LLQuad mQ{};
 };
 
 #endif //LL_SIMD_TYPES_H
diff --git a/indra/llmath/llsphere.cpp b/indra/llmath/llsphere.cpp
index 75f9ef1772..5f48764455 100644
--- a/indra/llmath/llsphere.cpp
+++ b/indra/llmath/llsphere.cpp
@@ -69,18 +69,18 @@ F32 LLSphere::getRadius() const
     return mRadius;
 }
 
-// returns 'TRUE' if this sphere completely contains other_sphere
-BOOL LLSphere::contains(const LLSphere& other_sphere) const
+// returns 'true' if this sphere completely contains other_sphere
+bool LLSphere::contains(const LLSphere& other_sphere) const
 {
     F32 separation = (mCenter - other_sphere.mCenter).length();
-    return (mRadius >= separation + other_sphere.mRadius) ? TRUE : FALSE;
+    return mRadius >= separation + other_sphere.mRadius;
 }
 
-// returns 'TRUE' if this sphere completely contains other_sphere
-BOOL LLSphere::overlaps(const LLSphere& other_sphere) const
+// returns 'true' if this sphere completely contains other_sphere
+bool LLSphere::overlaps(const LLSphere& other_sphere) const
 {
     F32 separation = (mCenter - other_sphere.mCenter).length();
-    return (separation <= mRadius + other_sphere.mRadius) ? TRUE : FALSE;
+    return mRadius >= separation - other_sphere.mRadius;
 }
 
 // returns overlap
@@ -93,9 +93,8 @@ F32 LLSphere::getOverlap(const LLSphere& other_sphere) const
 
 bool LLSphere::operator==(const LLSphere& rhs) const
 {
-    // TODO? -- use approximate equality for centers?
-    return (mRadius == rhs.mRadius
-            && mCenter == rhs.mCenter);
+    return fabs(mRadius - rhs.mRadius) <= FLT_EPSILON &&
+        (mCenter - rhs.mCenter).length() <= FLT_EPSILON;
 }
 
 std::ostream& operator<<( std::ostream& output_stream, const LLSphere& sphere)
@@ -186,7 +185,7 @@ LLSphere LLSphere::getBoundingSphere(const std::vector<LLSphere>& sphere_list)
     // TODO -- improve the accuracy for small collections of spheres
 
     LLSphere bounding_sphere( LLVector3(0.f, 0.f, 0.f), 0.f );
-    S32 sphere_count = sphere_list.size();
+    auto sphere_count = sphere_list.size();
     if (1 == sphere_count)
     {
         // trivial case -- single sphere
diff --git a/indra/llmath/llsphere.h b/indra/llmath/llsphere.h
index 62bcadf16d..cb923dcd3c 100644
--- a/indra/llmath/llsphere.h
+++ b/indra/llmath/llsphere.h
@@ -47,11 +47,11 @@ public:
     const LLVector3& getCenter() const;
     F32 getRadius() const;
 
-    // returns TRUE if this sphere completely contains other_sphere
-    BOOL contains(const LLSphere& other_sphere) const;
+    // returns true if this sphere completely contains other_sphere
+    bool contains(const LLSphere& other_sphere) const;
 
-    // returns TRUE if this sphere overlaps other_sphere
-    BOOL overlaps(const LLSphere& other_sphere) const;
+    // returns true if this sphere overlaps other_sphere
+    bool overlaps(const LLSphere& other_sphere) const;
 
     // returns overlap distance
     // negative overlap is closest approach
diff --git a/indra/llmath/lltreenode.h b/indra/llmath/lltreenode.h
index a0b90e3511..e3d30206b7 100644
--- a/indra/llmath/lltreenode.h
+++ b/indra/llmath/lltreenode.h
@@ -56,10 +56,11 @@ public:
     virtual bool insert(T* data);
     virtual bool remove(T* data);
     virtual void notifyRemoval(T* data);
-    virtual U32 getListenerCount()                  { return mListeners.size(); }
+    virtual U32 hasListeners() const { return !mListeners.empty(); }
+    virtual U32 getListenerCount() const { return static_cast<U32>(mListeners.size()); }
     virtual LLTreeListener<T>* getListener(U32 index) const
     {
-        if(index < mListeners.size())
+        if (index < mListeners.size())
         {
             return mListeners[index];
         }
diff --git a/indra/llmath/llvector4a.h b/indra/llmath/llvector4a.h
index 8f0ee4b739..8ef560dadf 100644
--- a/indra/llmath/llvector4a.h
+++ b/indra/llmath/llvector4a.h
@@ -117,6 +117,49 @@ public:
         mQ = q;
     }
 
+    bool operator==(const LLVector4a& rhs) const
+    {
+        return equals4(rhs);
+    }
+
+    bool operator!=(const LLVector4a& rhs) const
+    {
+        return !(*this == rhs);
+    }
+
+    const LLVector4a& operator+=(const LLVector4a& rhs)
+    {
+        add(rhs);
+        return *this;
+    }
+
+    const LLVector4a& operator-=(const LLVector4a& rhs)
+    {
+        sub(rhs);
+        return *this;
+    }
+
+    LLVector4a operator+(const LLVector4a& rhs) const
+    {
+        LLVector4a result = *this;
+        result.add(rhs);
+        return result;
+    }
+
+    LLVector4a operator-(const LLVector4a& rhs) const
+    {
+        LLVector4a result = *this;
+        result.sub(rhs);
+        return result;
+    }
+
+    LLVector4a cross3(const LLVector4a& b) const
+    {
+        LLVector4a result;
+        result.setCross3(*this, b);
+        return result;
+    }
+
     ////////////////////////////////////
     // LOAD/STORE
     ////////////////////////////////////
@@ -322,7 +365,7 @@ public:
     inline operator LLQuad() const;
 
 private:
-    LLQuad mQ;
+    LLQuad mQ{};
 };
 
 inline void update_min_max(LLVector4a& min, LLVector4a& max, const LLVector4a& p)
diff --git a/indra/llmath/llvector4logical.h b/indra/llmath/llvector4logical.h
index d08b5513d9..70759eef5c 100644
--- a/indra/llmath/llvector4logical.h
+++ b/indra/llmath/llvector4logical.h
@@ -120,7 +120,7 @@ public:
 
 private:
 
-    LLQuad mQ;
+    LLQuad mQ{};
 };
 
 #endif //LL_VECTOR4ALOGICAL_H
diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 69138f64f5..8bcfd591b4 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -65,66 +65,66 @@
 #define DEBUG_SILHOUETTE_NORMALS 0 // TomY: Use this to display normals using the silhouette
 #define DEBUG_SILHOUETTE_EDGE_MAP 0 // DaveP: Use this to display edge map using the silhouette
 
-const F32 MIN_CUT_DELTA = 0.02f;
+constexpr F32 MIN_CUT_DELTA = 0.02f;
 
-const F32 HOLLOW_MIN = 0.f;
-const F32 HOLLOW_MAX = 0.95f;
-const F32 HOLLOW_MAX_SQUARE = 0.7f;
+constexpr F32 HOLLOW_MIN = 0.f;
+constexpr F32 HOLLOW_MAX = 0.95f;
+constexpr F32 HOLLOW_MAX_SQUARE = 0.7f;
 
-const F32 TWIST_MIN = -1.f;
-const F32 TWIST_MAX =  1.f;
+constexpr F32 TWIST_MIN = -1.f;
+constexpr F32 TWIST_MAX =  1.f;
 
-const F32 RATIO_MIN = 0.f;
-const F32 RATIO_MAX = 2.f; // Tom Y: Inverted sense here: 0 = top taper, 2 = bottom taper
+constexpr F32 RATIO_MIN = 0.f;
+constexpr F32 RATIO_MAX = 2.f; // Tom Y: Inverted sense here: 0 = top taper, 2 = bottom taper
 
-const F32 HOLE_X_MIN= 0.05f;
-const F32 HOLE_X_MAX= 1.0f;
+constexpr F32 HOLE_X_MIN= 0.05f;
+constexpr F32 HOLE_X_MAX= 1.0f;
 
-const F32 HOLE_Y_MIN= 0.05f;
-const F32 HOLE_Y_MAX= 0.5f;
+constexpr F32 HOLE_Y_MIN= 0.05f;
+constexpr F32 HOLE_Y_MAX= 0.5f;
 
-const F32 SHEAR_MIN = -0.5f;
-const F32 SHEAR_MAX =  0.5f;
+constexpr F32 SHEAR_MIN = -0.5f;
+constexpr F32 SHEAR_MAX =  0.5f;
 
-const F32 REV_MIN = 1.f;
-const F32 REV_MAX = 4.f;
+constexpr F32 REV_MIN = 1.f;
+constexpr F32 REV_MAX = 4.f;
 
-const F32 TAPER_MIN = -1.f;
-const F32 TAPER_MAX =  1.f;
+constexpr F32 TAPER_MIN = -1.f;
+constexpr F32 TAPER_MAX =  1.f;
 
-const F32 SKEW_MIN  = -0.95f;
-const F32 SKEW_MAX  =  0.95f;
+constexpr F32 SKEW_MIN  = -0.95f;
+constexpr F32 SKEW_MAX  =  0.95f;
 
-const F32 SCULPT_MIN_AREA = 0.002f;
-const S32 SCULPT_MIN_AREA_DETAIL = 1;
+constexpr F32 SCULPT_MIN_AREA = 0.002f;
+constexpr S32 SCULPT_MIN_AREA_DETAIL = 1;
 
-BOOL gDebugGL = FALSE; // See settings.xml "RenderDebugGL"
+bool gDebugGL = false; // See settings.xml "RenderDebugGL"
 
-BOOL check_same_clock_dir( const LLVector3& pt1, const LLVector3& pt2, const LLVector3& pt3, const LLVector3& norm)
+bool check_same_clock_dir( const LLVector3& pt1, const LLVector3& pt2, const LLVector3& pt3, const LLVector3& norm)
 {
     LLVector3 test = (pt2-pt1)%(pt3-pt2);
 
     //answer
     if(test * norm < 0)
     {
-        return FALSE;
+        return false;
     }
     else
     {
-        return TRUE;
+        return true;
     }
 }
 
-BOOL LLLineSegmentBoxIntersect(const LLVector3& start, const LLVector3& end, const LLVector3& center, const LLVector3& size)
+bool LLLineSegmentBoxIntersect(const LLVector3& start, const LLVector3& end, const LLVector3& center, const LLVector3& size)
 {
     return LLLineSegmentBoxIntersect(start.mV, end.mV, center.mV, size.mV);
 }
 
-BOOL LLLineSegmentBoxIntersect(const F32* start, const F32* end, const F32* center, const F32* size)
+bool LLLineSegmentBoxIntersect(const F32* start, const F32* end, const F32* center, const F32* size)
 {
-    F32 fAWdU[3];
-    F32 dir[3];
-    F32 diff[3];
+    F32 fAWdU[3]{};
+    F32 dir[3]{};
+    F32 diff[3]{};
 
     for (U32 i = 0; i < 3; i++)
     {
@@ -222,11 +222,11 @@ void calc_tangent_from_triangle(
 
 
 // intersect test between triangle vert0, vert1, vert2 and a ray from orig in direction dir.
-// returns TRUE if intersecting and returns barycentric coordinates in intersection_a, intersection_b,
+// returns true if intersecting and returns barycentric coordinates in intersection_a, intersection_b,
 // and returns the intersection point along dir in intersection_t.
 
 // Moller-Trumbore algorithm
-BOOL LLTriangleRayIntersect(const LLVector4a& vert0, const LLVector4a& vert1, const LLVector4a& vert2, const LLVector4a& orig, const LLVector4a& dir,
+bool LLTriangleRayIntersect(const LLVector4a& vert0, const LLVector4a& vert1, const LLVector4a& vert2, const LLVector4a& orig, const LLVector4a& dir,
                             F32& intersection_a, F32& intersection_b, F32& intersection_t)
 {
 
@@ -288,15 +288,15 @@ BOOL LLTriangleRayIntersect(const LLVector4a& vert0, const LLVector4a& vert1, co
                 intersection_a = u[0];
                 intersection_b = v[0];
                 intersection_t = t[0];
-                return TRUE;
+                return true;
             }
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLTriangleRayIntersectTwoSided(const LLVector4a& vert0, const LLVector4a& vert1, const LLVector4a& vert2, const LLVector4a& orig, const LLVector4a& dir,
+bool LLTriangleRayIntersectTwoSided(const LLVector4a& vert0, const LLVector4a& vert1, const LLVector4a& vert2, const LLVector4a& orig, const LLVector4a& dir,
                             F32& intersection_a, F32& intersection_b, F32& intersection_t)
 {
     F32 u, v, t;
@@ -319,7 +319,7 @@ BOOL LLTriangleRayIntersectTwoSided(const LLVector4a& vert0, const LLVector4a& v
 
     if (det > -F_APPROXIMATELY_ZERO && det < F_APPROXIMATELY_ZERO)
     {
-        return FALSE;
+        return false;
     }
 
     F32 inv_det = 1.f / det;
@@ -332,7 +332,7 @@ BOOL LLTriangleRayIntersectTwoSided(const LLVector4a& vert0, const LLVector4a& v
     u = (tvec.dot3(pvec).getF32()) * inv_det;
     if (u < 0.f || u > 1.f)
     {
-        return FALSE;
+        return false;
     }
 
     /* prepare to test V parameter */
@@ -343,7 +343,7 @@ BOOL LLTriangleRayIntersectTwoSided(const LLVector4a& vert0, const LLVector4a& v
 
     if (v < 0.f || u + v > 1.f)
     {
-        return FALSE;
+        return false;
     }
 
     /* calculate t, ray intersects triangle */
@@ -354,30 +354,7 @@ BOOL LLTriangleRayIntersectTwoSided(const LLVector4a& vert0, const LLVector4a& v
     intersection_t = t;
 
 
-    return TRUE;
-}
-
-//helper for non-aligned vectors
-BOOL LLTriangleRayIntersect(const LLVector3& vert0, const LLVector3& vert1, const LLVector3& vert2, const LLVector3& orig, const LLVector3& dir,
-                            F32& intersection_a, F32& intersection_b, F32& intersection_t, BOOL two_sided)
-{
-    LLVector4a vert0a, vert1a, vert2a, origa, dira;
-    vert0a.load3(vert0.mV);
-    vert1a.load3(vert1.mV);
-    vert2a.load3(vert2.mV);
-    origa.load3(orig.mV);
-    dira.load3(dir.mV);
-
-    if (two_sided)
-    {
-        return LLTriangleRayIntersectTwoSided(vert0a, vert1a, vert2a, origa, dira,
-                intersection_a, intersection_b, intersection_t);
-    }
-    else
-    {
-        return LLTriangleRayIntersect(vert0a, vert1a, vert2a, origa, dira,
-                intersection_a, intersection_b, intersection_t);
-    }
+    return true;
 }
 
 //-------------------------------------------------------------------
@@ -394,12 +371,12 @@ LLProfile::Face* LLProfile::addCap(S16 faceID)
     face->mIndex = 0;
     face->mCount = mTotal;
     face->mScaleU= 1.0f;
-    face->mCap   = TRUE;
+    face->mCap   = true;
     face->mFaceID = faceID;
     return face;
 }
 
-LLProfile::Face* LLProfile::addFace(S32 i, S32 count, F32 scaleU, S16 faceID, BOOL flat)
+LLProfile::Face* LLProfile::addFace(S32 i, S32 count, F32 scaleU, S16 faceID, bool flat)
 {
     Face *face   = vector_append(mFaces, 1);
 
@@ -408,7 +385,7 @@ LLProfile::Face* LLProfile::addFace(S32 i, S32 count, F32 scaleU, S16 faceID, BO
     face->mScaleU= scaleU;
 
     face->mFlat = flat;
-    face->mCap   = FALSE;
+    face->mCap   = false;
     face->mFaceID = faceID;
     return face;
 }
@@ -483,7 +460,7 @@ void LLProfile::genNGon(const LLProfileParams& params, S32 sides, F32 offset, F3
 {
     // Generate an n-sided "circular" path.
     // 0 is (1,0), and we go counter-clockwise along a circular path from there.
-    static const F32 tableScale[] = { 1, 1, 1, 0.5f, 0.707107f, 0.53f, 0.525f, 0.5f };
+    constexpr F32 tableScale[] = { 1, 1, 1, 0.5f, 0.707107f, 0.53f, 0.525f, 0.5f };
     F32 scale = 0.5f;
     F32 t, t_step, t_first, t_fraction, ang, ang_step;
     LLVector4a pt1,pt2;
@@ -583,13 +560,13 @@ void LLProfile::genNGon(const LLProfileParams& params, S32 sides, F32 offset, F3
     {
         if ((end - begin)*ang_scale > 0.5f)
         {
-            mConcave = TRUE;
+            mConcave = true;
         }
         else
         {
-            mConcave = FALSE;
+            mConcave = false;
         }
-        mOpen = TRUE;
+        mOpen = true;
         if (params.getHollow() <= 0)
         {
             // put center point if not hollow.
@@ -599,8 +576,8 @@ void LLProfile::genNGon(const LLProfileParams& params, S32 sides, F32 offset, F3
     else
     {
         // The profile isn't open.
-        mOpen = FALSE;
-        mConcave = FALSE;
+        mOpen = false;
+        mConcave = false;
     }
 
     mTotal = mProfile.size();
@@ -609,7 +586,7 @@ void LLProfile::genNGon(const LLProfileParams& params, S32 sides, F32 offset, F3
 // Hollow is percent of the original bounding box, not of this particular
 // profile's geometry.  Thus, a swept triangle needs lower hollow values than
 // a swept square.
-LLProfile::Face* LLProfile::addHole(const LLProfileParams& params, BOOL flat, F32 sides, F32 offset, F32 box_hollow, F32 ang_scale, S32 split)
+LLProfile::Face* LLProfile::addHole(const LLProfileParams& params, bool flat, F32 sides, F32 offset, F32 box_hollow, F32 ang_scale, S32 split)
 {
     // Note that addHole will NOT work for non-"circular" profiles, if we ever decide to use them.
 
@@ -648,8 +625,8 @@ LLProfile::Face* LLProfile::addHole(const LLProfileParams& params, BOOL flat, F3
 }
 
 //static
-S32 LLProfile::getNumPoints(const LLProfileParams& params, BOOL path_open,F32 detail, S32 split,
-                         BOOL is_sculpted, S32 sculpt_size)
+S32 LLProfile::getNumPoints(const LLProfileParams& params, bool path_open,F32 detail, S32 split,
+                         bool is_sculpted, S32 sculpt_size)
 { // this is basically LLProfile::generate stripped down to only operations that influence the number of points
     if (detail < MIN_LOD)
     {
@@ -758,16 +735,16 @@ S32 LLProfile::getNumPoints(const LLProfileParams& params, BOOL path_open,F32 de
 }
 
 
-BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detail, S32 split,
-                         BOOL is_sculpted, S32 sculpt_size)
+bool LLProfile::generate(const LLProfileParams& params, bool path_open,F32 detail, S32 split,
+                         bool is_sculpted, S32 sculpt_size)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME
 
     if ((!mDirty) && (!is_sculpted))
     {
-        return FALSE;
+        return false;
     }
-    mDirty = FALSE;
+    mDirty = false;
 
     if (detail < MIN_LOD)
     {
@@ -788,7 +765,7 @@ BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detai
     if (begin > end - 0.01f)
     {
         LL_WARNS() << "LLProfile::generate() assertion failed (begin >= end)" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     S32 face_num = 0;
@@ -805,7 +782,7 @@ BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detai
 
             for (i = llfloor(begin * 4.f); i < llfloor(end * 4.f + .999f); i++)
             {
-                addFace((face_num++) * (split +1), split+2, 1, LL_FACE_OUTER_SIDE_0 << i, TRUE);
+                addFace((face_num++) * (split +1), split+2, 1, LL_FACE_OUTER_SIDE_0 << i, true);
             }
 
             LLVector4a scale(1,1,4,1);
@@ -823,16 +800,16 @@ BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detai
                 {
                 case LL_PCODE_HOLE_TRIANGLE:
                     // This offset is not correct, but we can't change it now... DK 11/17/04
-                    addHole(params, TRUE, 3, -0.375f, hollow, 1.f, split);
+                    addHole(params, true, 3, -0.375f, hollow, 1.f, split);
                     break;
                 case LL_PCODE_HOLE_CIRCLE:
                     // TODO: Compute actual detail levels for cubes
-                    addHole(params, FALSE, MIN_DETAIL_FACES * detail, -0.375f, hollow, 1.f);
+                    addHole(params, false, MIN_DETAIL_FACES * detail, -0.375f, hollow, 1.f);
                     break;
                 case LL_PCODE_HOLE_SAME:
                 case LL_PCODE_HOLE_SQUARE:
                 default:
-                    addHole(params, TRUE, 4, -0.375f, hollow, 1.f, split);
+                    addHole(params, true, 4, -0.375f, hollow, 1.f, split);
                     break;
                 }
             }
@@ -862,7 +839,7 @@ BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detai
 
             for (i = llfloor(begin * 3.f); i < llfloor(end * 3.f + .999f); i++)
             {
-                addFace((face_num++) * (split +1), split+2, 1, LL_FACE_OUTER_SIDE_0 << i, TRUE);
+                addFace((face_num++) * (split +1), split+2, 1, LL_FACE_OUTER_SIDE_0 << i, true);
             }
             if (hollow)
             {
@@ -874,15 +851,15 @@ BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detai
                 {
                 case LL_PCODE_HOLE_CIRCLE:
                     // TODO: Actually generate level of detail for triangles
-                    addHole(params, FALSE, MIN_DETAIL_FACES * detail, 0, triangle_hollow, 1.f);
+                    addHole(params, false, MIN_DETAIL_FACES * detail, 0, triangle_hollow, 1.f);
                     break;
                 case LL_PCODE_HOLE_SQUARE:
-                    addHole(params, TRUE, 4, 0, triangle_hollow, 1.f, split);
+                    addHole(params, true, 4, 0, triangle_hollow, 1.f, split);
                     break;
                 case LL_PCODE_HOLE_SAME:
                 case LL_PCODE_HOLE_TRIANGLE:
                 default:
-                    addHole(params, TRUE, 3, 0, triangle_hollow, 1.f, split);
+                    addHole(params, true, 3, 0, triangle_hollow, 1.f, split);
                     break;
                 }
             }
@@ -919,11 +896,11 @@ BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detai
 
             if (mOpen && !hollow)
             {
-                addFace(0,mTotal-1,0,LL_FACE_OUTER_SIDE_0, FALSE);
+                addFace(0,mTotal-1,0,LL_FACE_OUTER_SIDE_0, false);
             }
             else
             {
-                addFace(0,mTotal,0,LL_FACE_OUTER_SIDE_0, FALSE);
+                addFace(0,mTotal,0,LL_FACE_OUTER_SIDE_0, false);
             }
 
             if (hollow)
@@ -931,15 +908,15 @@ BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detai
                 switch (hole_type)
                 {
                 case LL_PCODE_HOLE_SQUARE:
-                    addHole(params, TRUE, 4, 0, hollow, 1.f, split);
+                    addHole(params, true, 4, 0, hollow, 1.f, split);
                     break;
                 case LL_PCODE_HOLE_TRIANGLE:
-                    addHole(params, TRUE, 3, 0, hollow, 1.f, split);
+                    addHole(params, true, 3, 0, hollow, 1.f, split);
                     break;
                 case LL_PCODE_HOLE_CIRCLE:
                 case LL_PCODE_HOLE_SAME:
                 default:
-                    addHole(params, FALSE, circle_detail, 0, hollow, 1.f);
+                    addHole(params, true, circle_detail, 0, hollow, 1.f);
                     break;
                 }
             }
@@ -969,11 +946,11 @@ BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detai
             }
             if (mOpen && !params.getHollow())
             {
-                addFace(0,mTotal-1,0,LL_FACE_OUTER_SIDE_0, FALSE);
+                addFace(0,mTotal-1,0,LL_FACE_OUTER_SIDE_0, false);
             }
             else
             {
-                addFace(0,mTotal,0,LL_FACE_OUTER_SIDE_0, FALSE);
+                addFace(0,mTotal,0,LL_FACE_OUTER_SIDE_0, false);
             }
 
             if (hollow)
@@ -981,15 +958,15 @@ BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detai
                 switch (hole_type)
                 {
                 case LL_PCODE_HOLE_SQUARE:
-                    addHole(params, TRUE, 2, 0.5f, hollow, 0.5f, split);
+                    addHole(params, true, 2, 0.5f, hollow, 0.5f, split);
                     break;
                 case LL_PCODE_HOLE_TRIANGLE:
-                    addHole(params, TRUE, 3,  0.5f, hollow, 0.5f, split);
+                    addHole(params, true, 3,  0.5f, hollow, 0.5f, split);
                     break;
                 case LL_PCODE_HOLE_CIRCLE:
                 case LL_PCODE_HOLE_SAME:
                 default:
-                    addHole(params, FALSE, circle_detail,  0.5f, hollow, 0.5f);
+                    addHole(params, false, circle_detail,  0.5f, hollow, 0.5f);
                     break;
                 }
             }
@@ -997,11 +974,11 @@ BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detai
             // Special case for openness of sphere
             if ((params.getEnd() - params.getBegin()) < 1.f)
             {
-                mOpen = TRUE;
+                mOpen = true;
             }
             else if (!hollow)
             {
-                mOpen = FALSE;
+                mOpen = false;
                 mProfile.push_back(mProfile[0]);
                 mTotal++;
             }
@@ -1019,24 +996,24 @@ BOOL LLProfile::generate(const LLProfileParams& params, BOOL path_open,F32 detai
 
     if ( mOpen) // interior edge caps
     {
-        addFace(mTotal-1, 2,0.5,LL_FACE_PROFILE_BEGIN, TRUE);
+        addFace(mTotal-1, 2,0.5,LL_FACE_PROFILE_BEGIN, true);
 
         if (hollow)
         {
-            addFace(mTotalOut-1, 2,0.5,LL_FACE_PROFILE_END, TRUE);
+            addFace(mTotalOut-1, 2,0.5,LL_FACE_PROFILE_END, true);
         }
         else
         {
-            addFace(mTotal-2, 2,0.5,LL_FACE_PROFILE_END, TRUE);
+            addFace(mTotal-2, 2,0.5,LL_FACE_PROFILE_END, true);
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
 
-BOOL LLProfileParams::importFile(LLFILE *fp)
+bool LLProfileParams::importFile(LLFILE *fp)
 {
     const S32 BUFSIZE = 16384;
     char buffer[BUFSIZE];   /* Flawfinder: ignore */
@@ -1094,11 +1071,11 @@ BOOL LLProfileParams::importFile(LLFILE *fp)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLProfileParams::exportFile(LLFILE *fp) const
+bool LLProfileParams::exportFile(LLFILE *fp) const
 {
     fprintf(fp,"\t\tprofile 0\n");
     fprintf(fp,"\t\t{\n");
@@ -1107,11 +1084,11 @@ BOOL LLProfileParams::exportFile(LLFILE *fp) const
     fprintf(fp,"\t\t\tend\t%g\n", getEnd());
     fprintf(fp,"\t\t\thollow\t%g\n", getHollow());
     fprintf(fp, "\t\t}\n");
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLProfileParams::importLegacyStream(std::istream& input_stream)
+bool LLProfileParams::importLegacyStream(std::istream& input_stream)
 {
     const S32 BUFSIZE = 16384;
     char buffer[BUFSIZE];   /* Flawfinder: ignore */
@@ -1166,11 +1143,11 @@ BOOL LLProfileParams::importLegacyStream(std::istream& input_stream)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLProfileParams::exportLegacyStream(std::ostream& output_stream) const
+bool LLProfileParams::exportLegacyStream(std::ostream& output_stream) const
 {
     output_stream <<"\t\tprofile 0\n";
     output_stream <<"\t\t{\n";
@@ -1179,7 +1156,7 @@ BOOL LLProfileParams::exportLegacyStream(std::ostream& output_stream) const
     output_stream <<"\t\t\tend\t" << getEnd() << "\n";
     output_stream <<"\t\t\thollow\t" << getHollow() << "\n";
     output_stream << "\t\t}\n";
-    return TRUE;
+    return true;
 }
 
 LLSD LLProfileParams::asLLSD() const
@@ -1246,7 +1223,7 @@ void LLPath::genNGon(const LLPathParams& params, S32 sides, F32 startOff, F32 en
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME
 
     // Generates a circular path, starting at (1, 0, 0), counterclockwise along the xz plane.
-    static const F32 tableScale[] = { 1, 1, 1, 0.5f, 0.707107f, 0.53f, 0.525f, 0.5f };
+    constexpr F32 tableScale[] = { 1, 1, 1, 0.5f, 0.707107f, 0.53f, 0.525f, 0.5f };
 
     F32 revolutions = params.getRevolutions();
     F32 skew        = params.getSkew();
@@ -1476,14 +1453,14 @@ S32 LLPath::getNumPoints(const LLPathParams& params, F32 detail)
     return np;
 }
 
-BOOL LLPath::generate(const LLPathParams& params, F32 detail, S32 split,
-                      BOOL is_sculpted, S32 sculpt_size)
+bool LLPath::generate(const LLPathParams& params, F32 detail, S32 split,
+                      bool is_sculpted, S32 sculpt_size)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME
 
     if ((!mDirty) && (!is_sculpted))
     {
-        return FALSE;
+        return false;
     }
 
     if (detail < MIN_LOD)
@@ -1492,11 +1469,11 @@ BOOL LLPath::generate(const LLPathParams& params, F32 detail, S32 split,
         detail = MIN_LOD;
     }
 
-    mDirty = FALSE;
+    mDirty = false;
     S32 np = 2; // hardcode for line
 
     mPath.resize(0);
-    mOpen = TRUE;
+    mOpen = true;
 
     // Is this 0xf0 mask really necessary?  DK 03/02/05
     switch (params.getCurveType() & 0xf0)
@@ -1556,7 +1533,7 @@ BOOL LLPath::generate(const LLPathParams& params, F32 detail, S32 split,
             if (params.getEnd() - params.getBegin() >= 0.99f &&
                 params.getScaleX() >= .99f)
             {
-                mOpen = FALSE;
+                mOpen = false;
             }
 
             //genNGon(params, llfloor(MIN_DETAIL_FACES * detail), 4.f, 0.f);
@@ -1600,19 +1577,19 @@ BOOL LLPath::generate(const LLPathParams& params, F32 detail, S32 split,
         break;
     };
 
-    if (params.getTwist() != params.getTwistBegin()) mOpen = TRUE;
+    if (params.getTwist() != params.getTwistBegin()) mOpen = true;
 
     //if ((int(fabsf(params.getTwist() - params.getTwistBegin())*100))%100 != 0) {
-    //  mOpen = TRUE;
+    //  mOpen = true;
     //}
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLDynamicPath::generate(const LLPathParams& params, F32 detail, S32 split,
-                             BOOL is_sculpted, S32 sculpt_size)
+bool LLDynamicPath::generate(const LLPathParams& params, F32 detail, S32 split,
+                             bool is_sculpted, S32 sculpt_size)
 {
-    mOpen = TRUE; // Draw end caps
+    mOpen = true; // Draw end caps
     if (getPathLength() == 0)
     {
         // Path hasn't been generated yet.
@@ -1631,11 +1608,11 @@ BOOL LLDynamicPath::generate(const LLPathParams& params, F32 detail, S32 split,
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLPathParams::importFile(LLFILE *fp)
+bool LLPathParams::importFile(LLFILE *fp)
 {
     const S32 BUFSIZE = 16384;
     char buffer[BUFSIZE];   /* Flawfinder: ignore */
@@ -1750,11 +1727,11 @@ BOOL LLPathParams::importFile(LLFILE *fp)
             LL_WARNS() << "unknown keyword " << " in path import" << LL_ENDL;
         }
     }
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLPathParams::exportFile(LLFILE *fp) const
+bool LLPathParams::exportFile(LLFILE *fp) const
 {
     fprintf(fp, "\t\tpath 0\n");
     fprintf(fp, "\t\t{\n");
@@ -1775,11 +1752,11 @@ BOOL LLPathParams::exportFile(LLFILE *fp) const
     fprintf(fp,"\t\t\tskew\t%g\n", getSkew());
 
     fprintf(fp, "\t\t}\n");
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLPathParams::importLegacyStream(std::istream& input_stream)
+bool LLPathParams::importLegacyStream(std::istream& input_stream)
 {
     const S32 BUFSIZE = 16384;
     char buffer[BUFSIZE];   /* Flawfinder: ignore */
@@ -1890,11 +1867,11 @@ BOOL LLPathParams::importLegacyStream(std::istream& input_stream)
             LL_WARNS() << "unknown keyword " << " in path import" << LL_ENDL;
         }
     }
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLPathParams::exportLegacyStream(std::ostream& output_stream) const
+bool LLPathParams::exportLegacyStream(std::ostream& output_stream) const
 {
     output_stream << "\t\tpath 0\n";
     output_stream << "\t\t{\n";
@@ -1915,7 +1892,7 @@ BOOL LLPathParams::exportLegacyStream(std::ostream& output_stream) const
     output_stream <<"\t\t\tskew\t" << getSkew() << "\n";
 
     output_stream << "\t\t}\n";
-    return TRUE;
+    return true;
 }
 
 LLSD LLPathParams::asLLSD() const
@@ -1980,7 +1957,7 @@ LLProfile::~LLProfile()
 
 S32 LLVolume::sNumMeshPoints = 0;
 
-LLVolume::LLVolume(const LLVolumeParams &params, const F32 detail, const BOOL generate_single_face, const BOOL is_unique)
+LLVolume::LLVolume(const LLVolumeParams &params, const F32 detail, const bool generate_single_face, const bool is_unique)
     : mParams(params)
 {
     mUnique = is_unique;
@@ -1991,8 +1968,8 @@ LLVolume::LLVolume(const LLVolumeParams &params, const F32 detail, const BOOL ge
     mIsMeshAssetLoaded = false;
     mIsMeshAssetUnavaliable = false;
     mLODScaleBias.setVec(1,1,1);
-    mHullPoints = NULL;
-    mHullIndices = NULL;
+    mHullPoints = nullptr;
+    mHullIndices = nullptr;
     mNumHullPoints = 0;
     mNumHullIndices = 0;
 
@@ -2054,7 +2031,7 @@ LLVolume::~LLVolume()
     mHullIndices = NULL;
 }
 
-BOOL LLVolume::generate()
+bool LLVolume::generate()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME
 
@@ -2098,8 +2075,8 @@ BOOL LLVolume::generate()
         }
     }
 
-    BOOL regenPath = mPathp->generate(mParams.getPathParams(), path_detail, split);
-    BOOL regenProf = mProfilep->generate(mParams.getProfileParams(), mPathp->isOpen(),profile_detail, split);
+    bool regenPath = mPathp->generate(mParams.getPathParams(), path_detail, split);
+    bool regenProf = mProfilep->generate(mParams.getProfileParams(), mPathp->isOpen(),profile_detail, split);
 
     if (regenPath || regenProf )
     {
@@ -2162,11 +2139,11 @@ BOOL LLVolume::generate()
             mFaceMask |= id;
         }
         LL_CHECK_MEMORY
-        return TRUE;
+        return true;
     }
 
     LL_CHECK_MEMORY
-    return FALSE;
+    return false;
 }
 
 void LLVolumeFace::VertexData::init()
@@ -2347,7 +2324,7 @@ bool LLVolume::unpackVolumeFaces(U8* in_data, S32 size)
 bool LLVolume::unpackVolumeFacesInternal(const LLSD& mdl)
 {
     {
-        U32 face_count = mdl.size();
+        auto face_count = mdl.size();
 
         if (face_count == 0)
         { //no faces unpacked, treat as failed decode
@@ -2379,7 +2356,7 @@ bool LLVolume::unpackVolumeFacesInternal(const LLSD& mdl)
             LLSD::Binary idx = mdl[i]["TriangleList"];
 
             //copy out indices
-            S32 num_indices = idx.size() / 2;
+            auto num_indices = idx.size() / 2;
             const S32 indices_to_discard = num_indices % 3;
             if (indices_to_discard > 0)
             {
@@ -2387,7 +2364,7 @@ bool LLVolume::unpackVolumeFacesInternal(const LLSD& mdl)
                 LL_WARNS() << "Incomplete triangle discarded from face! Indices count " << num_indices << " was not divisible by 3. face index: " << i << " Total: " << face_count << LL_ENDL;
                 num_indices -= indices_to_discard;
             }
-            face.resizeIndices(num_indices);
+            face.resizeIndices(static_cast<S32>(num_indices));
 
             if (num_indices > 2 && !face.mIndices)
             {
@@ -2408,7 +2385,7 @@ bool LLVolume::unpackVolumeFacesInternal(const LLSD& mdl)
             }
 
             //copy out vertices
-            U32 num_verts = pos.size()/(3*2);
+            U32 num_verts = static_cast<U32>(pos.size())/(3*2);
             face.resizeVertices(num_verts);
 
             if (num_verts > 0 && !face.mPositions)
@@ -2672,7 +2649,7 @@ bool LLVolume::unpackVolumeFacesInternal(const LLSD& mdl)
 
             if (do_reverse_triangles)
             {
-                for (U32 j = 0; j < face.mNumIndices; j += 3)
+                for (S32 j = 0; j < face.mNumIndices; j += 3)
                 {
                     // swap the 2nd and 3rd index
                     S32 swap = face.mIndices[j+1];
@@ -2709,7 +2686,7 @@ bool LLVolume::unpackVolumeFacesInternal(const LLSD& mdl)
                     min_tc = face.mTexCoords[0];
                     max_tc = face.mTexCoords[0];
 
-                    for (U32 j = 1; j < face.mNumVertices; ++j)
+                    for (S32 j = 1; j < face.mNumVertices; ++j)
                     {
                         update_min_max(min_tc, max_tc, face.mTexCoords[j]);
                     }
@@ -2812,10 +2789,10 @@ void LLVolume::createVolumeFaces()
     else
     {
         S32 num_faces = getNumFaces();
-        BOOL partial_build = TRUE;
+        bool partial_build = true;
         if (num_faces != mVolumeFaces.size())
         {
-            partial_build = FALSE;
+            partial_build = false;
             mVolumeFaces.resize(num_faces);
         }
         // Initialize volume faces with parameter data
@@ -3050,9 +3027,9 @@ void LLVolume::sculptGenerateSpherePlaceholder()
 void LLVolume::sculptGenerateMapVertices(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components, const U8* sculpt_data, U8 sculpt_type)
 {
     U8 sculpt_stitching = sculpt_type & LL_SCULPT_TYPE_MASK;
-    BOOL sculpt_invert = sculpt_type & LL_SCULPT_FLAG_INVERT;
-    BOOL sculpt_mirror = sculpt_type & LL_SCULPT_FLAG_MIRROR;
-    BOOL reverse_horizontal = (sculpt_invert ? !sculpt_mirror : sculpt_mirror);  // XOR
+    bool sculpt_invert = sculpt_type & LL_SCULPT_FLAG_INVERT;
+    bool sculpt_mirror = sculpt_type & LL_SCULPT_FLAG_MIRROR;
+    bool reverse_horizontal = (sculpt_invert ? !sculpt_mirror : sculpt_mirror);  // XOR
 
     S32 sizeS = mPathp->mPath.size();
     S32 sizeT = mProfilep->mProfile.size();
@@ -3137,14 +3114,13 @@ void LLVolume::sculptGenerateMapVertices(U16 sculpt_width, U16 sculpt_height, S8
 }
 
 
-const S32 SCULPT_REZ_1 = 6;  // changed from 4 to 6 - 6 looks round whereas 4 looks square
-const S32 SCULPT_REZ_2 = 8;
-const S32 SCULPT_REZ_3 = 16;
-const S32 SCULPT_REZ_4 = 32;
+constexpr S32 SCULPT_REZ_1 = 6;  // changed from 4 to 6 - 6 looks round whereas 4 looks square
+constexpr S32 SCULPT_REZ_2 = 8;
+constexpr S32 SCULPT_REZ_3 = 16;
+constexpr S32 SCULPT_REZ_4 = 32;
 
 S32 sculpt_sides(F32 detail)
 {
-
     // detail is usually one of: 1, 1.5, 2.5, 4.0.
 
     if (detail <= 1.0)
@@ -3207,12 +3183,12 @@ void LLVolume::sculpt(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components,
 {
     U8 sculpt_type = mParams.getSculptType();
 
-    BOOL data_is_empty = FALSE;
+    bool data_is_empty = false;
 
     if (sculpt_width == 0 || sculpt_height == 0 || sculpt_components < 3 || sculpt_data == NULL)
     {
         sculpt_level = -1;
-        data_is_empty = TRUE;
+        data_is_empty = true;
     }
 
     S32 requested_sizeS = 0;
@@ -3220,8 +3196,8 @@ void LLVolume::sculpt(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components,
 
     sculpt_calc_mesh_resolution(sculpt_width, sculpt_height, sculpt_type, mDetail, requested_sizeS, requested_sizeT);
 
-    mPathp->generate(mParams.getPathParams(), mDetail, 0, TRUE, requested_sizeS);
-    mProfilep->generate(mParams.getProfileParams(), mPathp->isOpen(), mDetail, 0, TRUE, requested_sizeT);
+    mPathp->generate(mParams.getPathParams(), mDetail, 0, true, requested_sizeS);
+    mProfilep->generate(mParams.getProfileParams(), mPathp->isOpen(), mDetail, 0, true, requested_sizeT);
 
     S32 sizeS = mPathp->mPath.size();         // we requested a specific size, now see what we really got
     S32 sizeT = mProfilep->mProfile.size();   // we requested a specific size, now see what we really got
@@ -3252,7 +3228,7 @@ void LLVolume::sculpt(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components,
 
             if (area < SCULPT_MIN_AREA || area > SCULPT_MAX_AREA)
             {
-                data_is_empty = TRUE;
+                data_is_empty = true;
                 visible_placeholder = true;
             }
         }
@@ -3271,8 +3247,6 @@ void LLVolume::sculpt(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components,
         }
     }
 
-
-
     for (S32 i = 0; i < (S32)mProfilep->mFaces.size(); i++)
     {
         mFaceMask |= mProfilep->mFaces[i].mFaceID;
@@ -3289,12 +3263,12 @@ void LLVolume::sculpt(U16 sculpt_width, U16 sculpt_height, S8 sculpt_components,
 
 
 
-BOOL LLVolume::isCap(S32 face)
+bool LLVolume::isCap(S32 face)
 {
     return mProfilep->mFaces[face].mCap;
 }
 
-BOOL LLVolume::isFlat(S32 face)
+bool LLVolume::isFlat(S32 face)
 {
     return mProfilep->mFaces[face].mFlat;
 }
@@ -3357,7 +3331,7 @@ void LLVolumeParams::copyParams(const LLVolumeParams &params)
 }
 
 // Less restricitve approx 0 for volumes
-const F32 APPROXIMATELY_ZERO = 0.001f;
+constexpr F32 APPROXIMATELY_ZERO = 0.001f;
 bool approx_zero( F32 f, F32 tolerance = APPROXIMATELY_ZERO)
 {
     return (f >= -tolerance) && (f <= tolerance);
@@ -3613,7 +3587,7 @@ bool LLVolumeParams::setSkew(const F32 skew_value)
     return valid;
 }
 
-bool LLVolumeParams::setSculptID(const LLUUID sculpt_id, U8 sculpt_type)
+bool LLVolumeParams::setSculptID(const LLUUID& sculpt_id, U8 sculpt_type)
 {
     mSculptID = sculpt_id;
     mSculptType = sculpt_type;
@@ -3808,7 +3782,7 @@ void LLVolume::generateSilhouetteVertices(std::vector<LLVector3> &vertices,
             LLVector4a* v = (LLVector4a*)face.mPositions;
             LLVector4a* n = (LLVector4a*)face.mNormals;
 
-            for (U32 j = 0; j < face.mNumIndices / 3; j++)
+            for (S32 j = 0; j < face.mNumIndices / 3; j++)
             {
                 for (S32 k = 0; k < 3; k++)
                 {
@@ -3843,7 +3817,6 @@ void LLVolume::generateSilhouetteVertices(std::vector<LLVector3> &vertices,
         }
         else
         {
-
             //==============================================
             //DEBUG draw edge map instead of silhouette edge
             //==============================================
@@ -3925,8 +3898,8 @@ void LLVolume::generateSilhouetteVertices(std::vector<LLVector3> &vertices,
             //DEBUG
             //==============================================
 
-            static const U8 AWAY = 0x01,
-                            TOWARDS = 0x02;
+            constexpr U8 AWAY = 0x01,
+                         TOWARDS = 0x02;
 
             //for each triangle
             std::vector<U8> fFacing;
@@ -3935,7 +3908,7 @@ void LLVolume::generateSilhouetteVertices(std::vector<LLVector3> &vertices,
             LLVector4a* v = (LLVector4a*) face.mPositions;
             LLVector4a* n = (LLVector4a*) face.mNormals;
 
-            for (U32 j = 0; j < face.mNumIndices/3; j++)
+            for (S32 j = 0; j < face.mNumIndices/3; j++)
             {
                 //approximate normal
                 S32 v1 = face.mIndices[j*3+0];
@@ -3972,7 +3945,7 @@ void LLVolume::generateSilhouetteVertices(std::vector<LLVector3> &vertices,
             }
 
             //for each triangle
-            for (U32 j = 0; j < face.mNumIndices/3; j++)
+            for (S32 j = 0; j < face.mNumIndices/3; j++)
             {
                 if (fFacing[j] == (AWAY | TOWARDS))
                 { //this is a degenerate triangle
@@ -4196,7 +4169,7 @@ LLVertexIndexPair::LLVertexIndexPair(const LLVector3 &vertex, const S32 index)
     mIndex = index;
 }
 
-const F32 VERTEX_SLOP = 0.00001f;
+constexpr F32 VERTEX_SLOP = 0.00001f;
 
 struct lessVertex
 {
@@ -4206,32 +4179,32 @@ struct lessVertex
 
         if (a->mVertex.mV[0] + slop < b->mVertex.mV[0])
         {
-            return TRUE;
+            return true;
         }
         else if (a->mVertex.mV[0] - slop > b->mVertex.mV[0])
         {
-            return FALSE;
+            return false;
         }
 
         if (a->mVertex.mV[1] + slop < b->mVertex.mV[1])
         {
-            return TRUE;
+            return true;
         }
         else if (a->mVertex.mV[1] - slop > b->mVertex.mV[1])
         {
-            return FALSE;
+            return false;
         }
 
         if (a->mVertex.mV[2] + slop < b->mVertex.mV[2])
         {
-            return TRUE;
+            return true;
         }
         else if (a->mVertex.mV[2] - slop > b->mVertex.mV[2])
         {
-            return FALSE;
+            return false;
         }
 
-        return FALSE;
+        return false;
     }
 };
 
@@ -4241,45 +4214,45 @@ struct lessTriangle
     {
         if (*a < *b)
         {
-            return TRUE;
+            return true;
         }
         else if (*a > *b)
         {
-            return FALSE;
+            return false;
         }
 
         if (*(a+1) < *(b+1))
         {
-            return TRUE;
+            return true;
         }
         else if (*(a+1) > *(b+1))
         {
-            return FALSE;
+            return false;
         }
 
         if (*(a+2) < *(b+2))
         {
-            return TRUE;
+            return true;
         }
         else if (*(a+2) > *(b+2))
         {
-            return FALSE;
+            return false;
         }
 
-        return FALSE;
+        return false;
     }
 };
 
-BOOL equalTriangle(const S32 *a, const S32 *b)
+bool equalTriangle(const S32 *a, const S32 *b)
 {
     if ((*a == *b) && (*(a+1) == *(b+1)) && (*(a+2) == *(b+2)))
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLVolumeParams::importFile(LLFILE *fp)
+bool LLVolumeParams::importFile(LLFILE *fp)
 {
     //LL_INFOS() << "importing volume" << LL_ENDL;
     const S32 BUFSIZE = 16384;
@@ -4319,21 +4292,21 @@ BOOL LLVolumeParams::importFile(LLFILE *fp)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLVolumeParams::exportFile(LLFILE *fp) const
+bool LLVolumeParams::exportFile(LLFILE *fp) const
 {
     fprintf(fp,"\tshape 0\n");
     fprintf(fp,"\t{\n");
     mPathParams.exportFile(fp);
     mProfileParams.exportFile(fp);
     fprintf(fp, "\t}\n");
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLVolumeParams::importLegacyStream(std::istream& input_stream)
+bool LLVolumeParams::importLegacyStream(std::istream& input_stream)
 {
     //LL_INFOS() << "importing volume" << LL_ENDL;
     const S32 BUFSIZE = 16384;
@@ -4369,17 +4342,17 @@ BOOL LLVolumeParams::importLegacyStream(std::istream& input_stream)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLVolumeParams::exportLegacyStream(std::ostream& output_stream) const
+bool LLVolumeParams::exportLegacyStream(std::ostream& output_stream) const
 {
     output_stream <<"\tshape 0\n";
     output_stream <<"\t{\n";
     mPathParams.exportLegacyStream(output_stream);
     mProfileParams.exportLegacyStream(output_stream);
     output_stream << "\t}\n";
-    return TRUE;
+    return true;
 }
 
 LLSD LLVolumeParams::sculptAsLLSD() const
@@ -4451,14 +4424,14 @@ void LLVolumeParams::reduceT(F32 begin, F32 end)
 const F32 MIN_CONCAVE_PROFILE_WEDGE = 0.125f;   // 1/8 unity
 const F32 MIN_CONCAVE_PATH_WEDGE = 0.111111f;   // 1/9 unity
 
-// returns TRUE if the shape can be approximated with a convex shape
+// returns true if the shape can be approximated with a convex shape
 // for collison purposes
-BOOL LLVolumeParams::isConvex() const
+bool LLVolumeParams::isConvex() const
 {
     if (!getSculptID().isNull())
     {
         // can't determine, be safe and say no:
-        return FALSE;
+        return false;
     }
 
     F32 path_length = mPathParams.getEnd() - mPathParams.getBegin();
@@ -4471,11 +4444,11 @@ BOOL LLVolumeParams::isConvex() const
                  && LL_PCODE_PATH_LINE != path_type) ) )
     {
         // twist along a "not too short" path is concave
-        return FALSE;
+        return false;
     }
 
     F32 profile_length = mProfileParams.getEnd() - mProfileParams.getBegin();
-    BOOL same_hole = hollow == 0.f
+    bool same_hole = hollow == 0.f
                      || (mProfileParams.getCurveType() & LL_PCODE_HOLE_MASK) == LL_PCODE_HOLE_SAME;
 
     F32 min_profile_wedge = MIN_CONCAVE_PROFILE_WEDGE;
@@ -4486,7 +4459,7 @@ BOOL LLVolumeParams::isConvex() const
         min_profile_wedge = 2.f * MIN_CONCAVE_PROFILE_WEDGE;
     }
 
-    BOOL convex_profile = ( ( profile_length == 1.f
+    bool convex_profile = ( ( profile_length == 1.f
                              || profile_length <= 0.5f )
                            && hollow == 0.f )                       // trivially convex
                           || ( profile_length <= min_profile_wedge
@@ -4495,36 +4468,36 @@ BOOL LLVolumeParams::isConvex() const
     if (!convex_profile)
     {
         // profile is concave
-        return FALSE;
+        return false;
     }
 
     if ( LL_PCODE_PATH_LINE == path_type )
     {
         // straight paths with convex profile
-        return TRUE;
+        return true;
     }
 
-    BOOL concave_path = (path_length < 1.0f) && (path_length > 0.5f);
+    bool concave_path = (path_length < 1.0f) && (path_length > 0.5f);
     if (concave_path)
     {
-        return FALSE;
+        return false;
     }
 
     // we're left with spheres, toroids and tubes
     if ( LL_PCODE_PROFILE_CIRCLE_HALF == profile_type )
     {
         // at this stage all spheres must be convex
-        return TRUE;
+        return true;
     }
 
     // it's a toroid or tube
     if ( path_length <= MIN_CONCAVE_PATH_WEDGE )
     {
         // effectively convex
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 // debug
@@ -4602,7 +4575,7 @@ LLFaceID LLVolume::generateFaceMask()
     return new_mask;
 }
 
-BOOL LLVolume::isFaceMaskValid(LLFaceID face_mask)
+bool LLVolume::isFaceMaskValid(LLFaceID face_mask)
 {
     LLFaceID test_mask = 0;
     for(S32 i = 0; i < getNumFaces(); i++)
@@ -4613,9 +4586,9 @@ BOOL LLVolume::isFaceMaskValid(LLFaceID face_mask)
     return test_mask == face_mask;
 }
 
-BOOL LLVolume::isConvex() const
+bool LLVolume::isConvex() const
 {
-    // mParams.isConvex() may return FALSE even though the final
+    // mParams.isConvex() may return false even though the final
     // geometry is actually convex due to LOD approximations.
     // TODO -- provide LLPath and LLProfile with isConvex() methods
     // that correctly determine convexity. -- Leviathan
@@ -4721,10 +4694,10 @@ LLVolumeFace::LLVolumeFace() :
     mJustWeights(NULL),
     mJointIndices(NULL),
 #endif
-    mWeightsScrubbed(FALSE),
+    mWeightsScrubbed(false),
     mOctree(NULL),
     mOctreeTriangles(NULL),
-    mOptimized(FALSE)
+    mOptimized(false)
 {
     mExtents = (LLVector4a*) ll_aligned_malloc_16(sizeof(LLVector4a)*3);
     mExtents[0].splat(-0.5f);
@@ -4752,7 +4725,7 @@ LLVolumeFace::LLVolumeFace(const LLVolumeFace& src)
     mJustWeights(NULL),
     mJointIndices(NULL),
 #endif
-    mWeightsScrubbed(FALSE),
+    mWeightsScrubbed(false),
     mOctree(NULL),
     mOctreeTriangles(NULL)
 {
@@ -4826,7 +4799,7 @@ LLVolumeFace& LLVolumeFace::operator=(const LLVolumeFace& src)
         {
             ll_aligned_free_16(mWeights);
             mWeights = NULL;
-            mWeightsScrubbed = FALSE;
+            mWeightsScrubbed = false;
         }
 
     #if USE_SEPARATE_JOINT_INDICES_AND_WEIGHTS
@@ -4899,7 +4872,7 @@ void LLVolumeFace::freeData()
     destroyOctree();
 }
 
-BOOL LLVolumeFace::create(LLVolume* volume, BOOL partial_build)
+bool LLVolumeFace::create(LLVolume* volume, bool partial_build)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME
 
@@ -4907,7 +4880,7 @@ BOOL LLVolumeFace::create(LLVolume* volume, BOOL partial_build)
     destroyOctree();
 
     LL_CHECK_MEMORY
-    BOOL ret = FALSE ;
+    bool ret = false ;
     if (mTypeMask & CAP_MASK)
     {
         ret = createCap(volume, partial_build);
@@ -4974,13 +4947,13 @@ void LLVolumeFace::remap()
 {
     // Generate a remap buffer
     std::vector<unsigned int> remap(mNumVertices);
-    S32 remap_vertices_count = LLMeshOptimizer::generateRemapMultiU16(&remap[0],
+    S32 remap_vertices_count = static_cast<S32>(LLMeshOptimizer::generateRemapMultiU16(&remap[0],
         mIndices,
         mNumIndices,
         mPositions,
         mNormals,
         mTexCoords,
-        mNumVertices);
+        mNumVertices));
 
     // Allocate new buffers
     S32 size = ((mNumIndices * sizeof(U16)) + 0xF) & ~0xF;
@@ -5025,7 +4998,7 @@ void LLVolumeFace::optimize(F32 angle_cutoff)
     range.setSub(mExtents[1],mExtents[0]);
 
     //remove redundant vertices
-    for (U32 i = 0; i < mNumIndices; ++i)
+    for (S32 i = 0; i < mNumIndices; ++i)
     {
         U16 index = mIndices[i];
 
@@ -5043,7 +5016,7 @@ void LLVolumeFace::optimize(F32 angle_cutoff)
         LLVolumeFace::VertexData cv;
         getVertexData(index, cv);
 
-        BOOL found = FALSE;
+        bool found = false;
 
         LLVector4a pos;
         pos.setSub(mPositions[index], mExtents[0]);
@@ -5064,7 +5037,7 @@ void LLVolumeFace::optimize(F32 angle_cutoff)
                 LLVolumeFace::VertexData& tv = (point_iter->second)[j];
                 if (tv.compareNormal(cv, angle_cutoff))
                 {
-                    found = TRUE;
+                    found = true;
                     new_face.pushIndex((point_iter->second)[j].mIndex);
                     break;
                 }
@@ -5171,12 +5144,12 @@ public:
     }
 };
 
-const F64 FindVertexScore_CacheDecayPower = 1.5;
-const F64 FindVertexScore_LastTriScore = 0.75;
-const F64 FindVertexScore_ValenceBoostScale = 2.0;
-const F64 FindVertexScore_ValenceBoostPower = 0.5;
-const U32 MaxSizeVertexCache = 32;
-const F64 FindVertexScore_Scaler = 1.0/(MaxSizeVertexCache-3);
+constexpr F64 FindVertexScore_CacheDecayPower = 1.5;
+constexpr F64 FindVertexScore_LastTriScore = 0.75;
+constexpr F64 FindVertexScore_ValenceBoostScale = 2.0;
+constexpr F64 FindVertexScore_ValenceBoostPower = 0.5;
+constexpr U32 MaxSizeVertexCache = 32;
+constexpr F64 FindVertexScore_Scaler = 1.0/(MaxSizeVertexCache-3);
 
 F64 find_vertex_score(LLVCacheVertexData& data)
 {
@@ -5411,7 +5384,7 @@ struct MikktData
         LLVector3 inv_scale(1.f / face->mNormalizedScale.mV[0], 1.f / face->mNormalizedScale.mV[1], 1.f / face->mNormalizedScale.mV[2]);
 
 
-        for (int i = 0; i < face->mNumIndices; ++i)
+        for (S32 i = 0; i < face->mNumIndices; ++i)
         {
             U32 idx = face->mIndices[i];
 
@@ -5422,17 +5395,6 @@ struct MikktData
             n[i].normalize();
             tc[i].set(face->mTexCoords[idx]);
 
-            if (idx >= face->mNumVertices)
-            {
-                // invalid index
-                // replace with a valid index to avoid crashes
-                idx = face->mNumVertices - 1;
-                face->mIndices[i] = idx;
-
-                // Needs better logging
-                LL_DEBUGS_ONCE("LLVOLUME") << "Invalid index, substituting" << LL_ENDL;
-            }
-
             if (face->mWeights)
             {
                 w[i].set(face->mWeights[idx].getF32ptr());
@@ -5479,7 +5441,7 @@ bool LLVolumeFace::cacheOptimize(bool gen_tangents)
 { //optimize for vertex cache according to Forsyth method:
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME;
     llassert(!mOptimized);
-    mOptimized = TRUE;
+    mOptimized = true;
 
     if (gen_tangents && mNormals && mTexCoords)
     { // generate mikkt space tangents before cache optimizing since the index buffer may change
@@ -5504,7 +5466,7 @@ bool LLVolumeFace::cacheOptimize(bool gen_tangents)
 
         U32 stream_count = data.w.empty() ? 4 : 5;
 
-        size_t vert_count = meshopt_generateVertexRemapMulti(&remap[0], nullptr, data.p.size(), data.p.size(), mos, stream_count);
+        S32 vert_count = static_cast<S32>(meshopt_generateVertexRemapMulti(&remap[0], nullptr, data.p.size(), data.p.size(), mos, stream_count));
 
         if (vert_count < 65535 && vert_count != 0)
         {
@@ -5518,11 +5480,11 @@ bool LLVolumeFace::cacheOptimize(bool gen_tangents)
 
             allocateTangents(mNumVertices);
 
-            for (int i = 0; i < mNumIndices; ++i)
+            for (S32 i = 0; i < mNumIndices; ++i)
             {
                 U32 src_idx = i;
                 U32 dst_idx = remap[i];
-                if (dst_idx >= mNumVertices)
+                if (dst_idx >= (U32)mNumVertices)
                 {
                     dst_idx = mNumVertices - 1;
                     // Shouldn't happen, figure out what gets returned in remap and why.
@@ -5549,7 +5511,7 @@ bool LLVolumeFace::cacheOptimize(bool gen_tangents)
             scale.load3(mNormalizedScale.mV);
             scale.getF32ptr()[3] = 1.f;
 
-            for (int i = 0; i < mNumVertices; ++i)
+            for (S32 i = 0; i < mNumVertices; ++i)
             {
                 mPositions[i].mul(inv_scale);
                 mNormals[i].mul(scale);
@@ -5710,7 +5672,7 @@ void    LerpPlanarVertex(LLVolumeFace::VertexData& v0,
     vout.setNormal(v0.getNormal());
 }
 
-BOOL LLVolumeFace::createUnCutCubeCap(LLVolume* volume, BOOL partial_build)
+bool LLVolumeFace::createUnCutCubeCap(LLVolume* volume, bool partial_build)
 {
     LL_CHECK_MEMORY
 
@@ -5942,11 +5904,11 @@ BOOL LLVolumeFace::createUnCutCubeCap(LLVolume* volume, BOOL partial_build)
     }
 
     LL_CHECK_MEMORY
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
+bool LLVolumeFace::createCap(LLVolume* volume, bool partial_build)
 {
     if (!(mTypeMask & HOLLOW_MASK) &&
         !(mTypeMask & OPEN_MASK) &&
@@ -6103,7 +6065,7 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
 
     //if (partial_build)
     //{
-    //  return TRUE;
+    //  return true;
     //}
 
     if (mTypeMask & HOLLOW_MASK)
@@ -6152,36 +6114,36 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
                             (paV[0]*pbV[1] - pbV[0]*paV[1]) +
                             (pbV[0]*p2V[1] - p2V[0]*pbV[1]);
 
-                BOOL use_tri1a2 = TRUE;
-                BOOL tri_1a2 = TRUE;
-                BOOL tri_21b = TRUE;
+                bool use_tri1a2 = true;
+                bool tri_1a2 = true;
+                bool tri_21b = true;
 
                 if (area_1a2 < 0)
                 {
-                    tri_1a2 = FALSE;
+                    tri_1a2 = false;
                 }
                 if (area_2ab < 0)
                 {
                     // Can't use, because it contains point b
-                    tri_1a2 = FALSE;
+                    tri_1a2 = false;
                 }
                 if (area_21b < 0)
                 {
-                    tri_21b = FALSE;
+                    tri_21b = false;
                 }
                 if (area_1ba < 0)
                 {
                     // Can't use, because it contains point b
-                    tri_21b = FALSE;
+                    tri_21b = false;
                 }
 
                 if (!tri_1a2)
                 {
-                    use_tri1a2 = FALSE;
+                    use_tri1a2 = false;
                 }
                 else if (!tri_21b)
                 {
-                    use_tri1a2 = TRUE;
+                    use_tri1a2 = true;
                 }
                 else
                 {
@@ -6193,11 +6155,11 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
 
                     if (d1.dot3(d1) < d2.dot3(d2))
                     {
-                        use_tri1a2 = TRUE;
+                        use_tri1a2 = true;
                     }
                     else
                     {
-                        use_tri1a2 = FALSE;
+                        use_tri1a2 = false;
                     }
                 }
 
@@ -6258,36 +6220,36 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
                             (paV[0]*pbV[1] - pbV[0]*paV[1]) +
                             (pbV[0]*p2V[1] - p2V[0]*pbV[1]);
 
-                BOOL use_tri1a2 = TRUE;
-                BOOL tri_1a2 = TRUE;
-                BOOL tri_21b = TRUE;
+                bool use_tri1a2 = true;
+                bool tri_1a2 = true;
+                bool tri_21b = true;
 
                 if (area_1a2 < 0)
                 {
-                    tri_1a2 = FALSE;
+                    tri_1a2 = false;
                 }
                 if (area_2ab < 0)
                 {
                     // Can't use, because it contains point b
-                    tri_1a2 = FALSE;
+                    tri_1a2 = false;
                 }
                 if (area_21b < 0)
                 {
-                    tri_21b = FALSE;
+                    tri_21b = false;
                 }
                 if (area_1ba < 0)
                 {
                     // Can't use, because it contains point b
-                    tri_21b = FALSE;
+                    tri_21b = false;
                 }
 
                 if (!tri_1a2)
                 {
-                    use_tri1a2 = FALSE;
+                    use_tri1a2 = false;
                 }
                 else if (!tri_21b)
                 {
-                    use_tri1a2 = TRUE;
+                    use_tri1a2 = true;
                 }
                 else
                 {
@@ -6298,11 +6260,11 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
 
                     if (d1.dot3(d1) < d2.dot3(d2))
                     {
-                        use_tri1a2 = TRUE;
+                        use_tri1a2 = true;
                     }
                     else
                     {
-                        use_tri1a2 = FALSE;
+                        use_tri1a2 = false;
                     }
                 }
 
@@ -6381,7 +6343,7 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
         norm[i].load4a(normal.getF32ptr());
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLVolumeFace::createTangents()
@@ -6404,7 +6366,7 @@ void LLVolumeFace::createTangents()
         LLCalculateTangentArray(mNumVertices, mPositions, mNormals, mTexCoords, mNumIndices / 3, mIndices, mTangents);
 
         //normalize normals
-        for (U32 i = 0; i < mNumVertices; i++)
+        for (S32 i = 0; i < mNumVertices; i++)
         {
             //bump map/planar projection code requires normals to be normalized
             mNormals[i].normalize3fast();
@@ -6580,8 +6542,8 @@ void LLVolumeFace::pushIndex(const U16& idx)
 
 void LLVolumeFace::fillFromLegacyData(std::vector<LLVolumeFace::VertexData>& v, std::vector<U16>& idx)
 {
-    resizeVertices(v.size());
-    resizeIndices(idx.size());
+    resizeVertices(static_cast<S32>(v.size()));
+    resizeIndices(static_cast<S32>(idx.size()));
 
     for (U32 i = 0; i < v.size(); ++i)
     {
@@ -6596,18 +6558,18 @@ void LLVolumeFace::fillFromLegacyData(std::vector<LLVolumeFace::VertexData>& v,
     }
 }
 
-BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
+bool LLVolumeFace::createSide(LLVolume* volume, bool partial_build)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME
 
     LL_CHECK_MEMORY
-    BOOL flat = mTypeMask & FLAT_MASK;
+    bool flat = mTypeMask & FLAT_MASK;
 
     U8 sculpt_type = volume->getParams().getSculptType();
     U8 sculpt_stitching = sculpt_type & LL_SCULPT_TYPE_MASK;
-    BOOL sculpt_invert = sculpt_type & LL_SCULPT_FLAG_INVERT;
-    BOOL sculpt_mirror = sculpt_type & LL_SCULPT_FLAG_MIRROR;
-    BOOL sculpt_reverse_horizontal = (sculpt_invert ? !sculpt_mirror : sculpt_mirror);  // XOR
+    bool sculpt_invert = sculpt_type & LL_SCULPT_FLAG_INVERT;
+    bool sculpt_mirror = sculpt_type & LL_SCULPT_FLAG_MIRROR;
+    bool sculpt_reverse_horizontal = (sculpt_invert ? !sculpt_mirror : sculpt_mirror);  // XOR
 
     S32 num_vertices, num_indices;
 
@@ -6623,7 +6585,7 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
     num_vertices = mNumS*mNumT;
     num_indices = (mNumS-1)*(mNumT-1)*6;
 
-    partial_build = (num_vertices > mNumVertices || num_indices > mNumIndices) ? FALSE : partial_build;
+    partial_build = (num_vertices > mNumVertices || num_indices > mNumIndices) ? false : partial_build;
 
     if (!partial_build)
     {
@@ -6676,7 +6638,7 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
             {
                 // Get s value for tex-coord.
                 S32 index = mBeginS + s;
-                if (index >= profile.size())
+                if (index >= (S32)profile.size())
                 {
                     // edge?
                     ss = flat ? 1.f - begin_stex : 1.f;
@@ -6794,7 +6756,7 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
 
     S32 cur_index = 0;
     S32 cur_edge = 0;
-    BOOL flat_face = mTypeMask & FLAT_MASK;
+    bool flat_face = mTypeMask & FLAT_MASK;
 
     if (!partial_build)
     {
@@ -6810,45 +6772,63 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
                 mIndices[cur_index++] = s+1 + mNumS*t;          //bottom right
                 mIndices[cur_index++] = s+1 + mNumS*(t+1);      //top right
 
-                mEdge[cur_edge++] = (mNumS-1)*2*t+s*2+1;                        //bottom left/top right neighbor face
-                if (t < mNumT-2) {                                              //top right/top left neighbor face
+                // bottom left/top right neighbor face
+                mEdge[cur_edge++] = (mNumS-1)*2*t+s*2+1;
+
+                if (t < mNumT-2)
+                {   // top right/top left neighbor face
                     mEdge[cur_edge++] = (mNumS-1)*2*(t+1)+s*2+1;
                 }
-                else if (mNumT <= 3 || volume->getPath().isOpen() == TRUE) { //no neighbor
+                else if (mNumT <= 3 || volume->getPath().isOpen())
+                {   // no neighbor
                     mEdge[cur_edge++] = -1;
                 }
-                else { //wrap on T
+                else
+                {   // wrap on T
                     mEdge[cur_edge++] = s*2+1;
                 }
-                if (s > 0) {                                                    //top left/bottom left neighbor face
+
+                if (s > 0)
+                {   // top left/bottom left neighbor face
                     mEdge[cur_edge++] = (mNumS-1)*2*t+s*2-1;
                 }
-                else if (flat_face ||  volume->getProfile().isOpen() == TRUE) { //no neighbor
+                else if (flat_face || volume->getProfile().isOpen())
+                {   // no neighbor
                     mEdge[cur_edge++] = -1;
                 }
-                else {  //wrap on S
+                else
+                {   // wrap on S
                     mEdge[cur_edge++] = (mNumS-1)*2*t+(mNumS-2)*2+1;
                 }
 
-                if (t > 0) {                                                    //bottom left/bottom right neighbor face
+                if (t > 0)
+                {   // bottom left/bottom right neighbor face
                     mEdge[cur_edge++] = (mNumS-1)*2*(t-1)+s*2;
                 }
-                else if (mNumT <= 3 || volume->getPath().isOpen() == TRUE) { //no neighbor
+                else if (mNumT <= 3 || volume->getPath().isOpen())
+                {   // no neighbor
                     mEdge[cur_edge++] = -1;
                 }
-                else { //wrap on T
+                else
+                {   // wrap on T
                     mEdge[cur_edge++] = (mNumS-1)*2*(mNumT-2)+s*2;
                 }
-                if (s < mNumS-2) {                                              //bottom right/top right neighbor face
+
+                if (s < mNumS-2)
+                {   // bottom right/top right neighbor face
                     mEdge[cur_edge++] = (mNumS-1)*2*t+(s+1)*2;
                 }
-                else if (flat_face || volume->getProfile().isOpen() == TRUE) { //no neighbor
+                else if (flat_face || volume->getProfile().isOpen())
+                {   // no neighbor
                     mEdge[cur_edge++] = -1;
                 }
-                else { //wrap on S
+                else
+                {   // wrap on S
                     mEdge[cur_edge++] = (mNumS-1)*2*t;
                 }
-                mEdge[cur_edge++] = (mNumS-1)*2*t+s*2;                          //top right/bottom left neighbor face
+
+                // top right/bottom left neighbor face
+                mEdge[cur_edge++] = (mNumS-1)*2*t+s*2;
             }
         }
     }
@@ -6978,14 +6958,14 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
 
     LLVector4a top;
     top.setSub(pos[0], pos[mNumS*(mNumT-2)]);
-    BOOL s_bottom_converges = (top.dot3(top) < 0.000001f);
+    bool s_bottom_converges = (top.dot3(top) < 0.000001f);
 
     top.setSub(pos[mNumS-1], pos[mNumS*(mNumT-2)+mNumS-1]);
-    BOOL s_top_converges = (top.dot3(top) < 0.000001f);
+    bool s_top_converges = (top.dot3(top) < 0.000001f);
 
     if (sculpt_stitching == LL_SCULPT_TYPE_NONE)  // logic for non-sculpt volumes
     {
-        if (volume->getPath().isOpen() == FALSE)
+        if (!volume->getPath().isOpen())
         { //wrap normals on T
             for (S32 i = 0; i < mNumS; i++)
             {
@@ -6996,7 +6976,7 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
             }
         }
 
-        if ((volume->getProfile().isOpen() == FALSE) && !(s_bottom_converges))
+        if (!volume->getProfile().isOpen() && !s_bottom_converges)
         { //wrap normals on S
             for (S32 i = 0; i < mNumT; i++)
             {
@@ -7029,20 +7009,20 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
     }
     else  // logic for sculpt volumes
     {
-        BOOL average_poles = FALSE;
-        BOOL wrap_s = FALSE;
-        BOOL wrap_t = FALSE;
+        bool average_poles = false;
+        bool wrap_s = false;
+        bool wrap_t = false;
 
         if (sculpt_stitching == LL_SCULPT_TYPE_SPHERE)
-            average_poles = TRUE;
+            average_poles = true;
 
         if ((sculpt_stitching == LL_SCULPT_TYPE_SPHERE) ||
             (sculpt_stitching == LL_SCULPT_TYPE_TORUS) ||
             (sculpt_stitching == LL_SCULPT_TYPE_CYLINDER))
-            wrap_s = TRUE;
+            wrap_s = true;
 
         if (sculpt_stitching == LL_SCULPT_TYPE_TORUS)
-            wrap_t = TRUE;
+            wrap_t = true;
 
 
         if (average_poles)
@@ -7107,7 +7087,7 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
 
     LL_CHECK_MEMORY
 
-    return TRUE;
+    return true;
 }
 
 //adapted from Lengyel, Eric. "Computing Tangent Space Basis Vectors for an Arbitrary Mesh". Terathon Software 3D Graphics Library, 2001. http://www.terathon.com/code/tangent.html
diff --git a/indra/llmath/llvolume.h b/indra/llmath/llvolume.h
index d53ca2a4b3..bbb2a16b0b 100644
--- a/indra/llmath/llvolume.h
+++ b/indra/llmath/llvolume.h
@@ -63,146 +63,148 @@ class LLVolumeOctree;
 
 //============================================================================
 
-const S32 MIN_DETAIL_FACES = 6;
-const S32 MIN_LOD = 0;
-const S32 MAX_LOD = 3;
+constexpr S32 MIN_DETAIL_FACES = 6;
+constexpr S32 MIN_LOD = 0;
+constexpr S32 MAX_LOD = 3;
 
 // These are defined here but are not enforced at this level,
 // rather they are here for the convenience of code that uses
 // the LLVolume class.
-const F32 MIN_VOLUME_PROFILE_WIDTH  = 0.05f;
-const F32 MIN_VOLUME_PATH_WIDTH     = 0.05f;
+constexpr F32 MIN_VOLUME_PROFILE_WIDTH  = 0.05f;
+constexpr F32 MIN_VOLUME_PATH_WIDTH     = 0.05f;
 
-const F32 CUT_QUANTA    = 0.00002f;
-const F32 SCALE_QUANTA  = 0.01f;
-const F32 SHEAR_QUANTA  = 0.01f;
-const F32 TAPER_QUANTA  = 0.01f;
-const F32 REV_QUANTA    = 0.015f;
-const F32 HOLLOW_QUANTA = 0.00002f;
+constexpr F32 CUT_QUANTA    = 0.00002f;
+constexpr F32 SCALE_QUANTA  = 0.01f;
+constexpr F32 SHEAR_QUANTA  = 0.01f;
+constexpr F32 TAPER_QUANTA  = 0.01f;
+constexpr F32 REV_QUANTA    = 0.015f;
+constexpr F32 HOLLOW_QUANTA = 0.00002f;
 
-const S32 MAX_VOLUME_TRIANGLE_INDICES = 10000;
+constexpr S32 MAX_VOLUME_TRIANGLE_INDICES = 10000;
 
 //============================================================================
 
 // useful masks
-const LLPCode LL_PCODE_HOLLOW_MASK  = 0x80;     // has a thickness
-const LLPCode LL_PCODE_SEGMENT_MASK = 0x40;     // segments (1 angle)
-const LLPCode LL_PCODE_PATCH_MASK   = 0x20;     // segmented segments (2 angles)
-const LLPCode LL_PCODE_HEMI_MASK    = 0x10;     // half-primitives get their own type per PR's dictum
-const LLPCode LL_PCODE_BASE_MASK    = 0x0F;
+constexpr LLPCode LL_PCODE_HOLLOW_MASK  = 0x80;     // has a thickness
+constexpr LLPCode LL_PCODE_SEGMENT_MASK = 0x40;     // segments (1 angle)
+constexpr LLPCode LL_PCODE_PATCH_MASK   = 0x20;     // segmented segments (2 angles)
+constexpr LLPCode LL_PCODE_HEMI_MASK    = 0x10;     // half-primitives get their own type per PR's dictum
+constexpr LLPCode LL_PCODE_BASE_MASK    = 0x0F;
 
     // primitive shapes
-const LLPCode   LL_PCODE_CUBE           = 1;
-const LLPCode   LL_PCODE_PRISM          = 2;
-const LLPCode   LL_PCODE_TETRAHEDRON    = 3;
-const LLPCode   LL_PCODE_PYRAMID        = 4;
-const LLPCode   LL_PCODE_CYLINDER       = 5;
-const LLPCode   LL_PCODE_CONE           = 6;
-const LLPCode   LL_PCODE_SPHERE         = 7;
-const LLPCode   LL_PCODE_TORUS          = 8;
-const LLPCode   LL_PCODE_VOLUME         = 9;
+constexpr LLPCode   LL_PCODE_CUBE           = 1;
+constexpr LLPCode   LL_PCODE_PRISM          = 2;
+constexpr LLPCode   LL_PCODE_TETRAHEDRON    = 3;
+constexpr LLPCode   LL_PCODE_PYRAMID        = 4;
+constexpr LLPCode   LL_PCODE_CYLINDER       = 5;
+constexpr LLPCode   LL_PCODE_CONE           = 6;
+constexpr LLPCode   LL_PCODE_SPHERE         = 7;
+constexpr LLPCode   LL_PCODE_TORUS          = 8;
+constexpr LLPCode   LL_PCODE_VOLUME         = 9;
 
     // surfaces
-//const LLPCode LL_PCODE_SURFACE_TRIANGLE   = 10;
-//const LLPCode LL_PCODE_SURFACE_SQUARE     = 11;
-//const LLPCode LL_PCODE_SURFACE_DISC       = 12;
+//constexpr LLPCode LL_PCODE_SURFACE_TRIANGLE   = 10;
+//constexpr LLPCode LL_PCODE_SURFACE_SQUARE     = 11;
+//constexpr LLPCode LL_PCODE_SURFACE_DISC       = 12;
 
-const LLPCode   LL_PCODE_APP                = 14; // App specific pcode (for viewer/sim side only objects)
-const LLPCode   LL_PCODE_LEGACY             = 15;
+constexpr LLPCode   LL_PCODE_APP                = 14; // App specific pcode (for viewer/sim side only objects)
+constexpr LLPCode   LL_PCODE_LEGACY             = 15;
 
 // Pcodes for legacy objects
-//const LLPCode LL_PCODE_LEGACY_ATOR =              0x10 | LL_PCODE_LEGACY; // ATOR
-const LLPCode   LL_PCODE_LEGACY_AVATAR =            0x20 | LL_PCODE_LEGACY; // PLAYER
-//const LLPCode LL_PCODE_LEGACY_BIRD =              0x30 | LL_PCODE_LEGACY; // BIRD
-//const LLPCode LL_PCODE_LEGACY_DEMON =             0x40 | LL_PCODE_LEGACY; // DEMON
-const LLPCode   LL_PCODE_LEGACY_GRASS =             0x50 | LL_PCODE_LEGACY; // GRASS
-const LLPCode   LL_PCODE_TREE_NEW =                 0x60 | LL_PCODE_LEGACY; // new trees
-//const LLPCode LL_PCODE_LEGACY_ORACLE =            0x70 | LL_PCODE_LEGACY; // ORACLE
-const LLPCode   LL_PCODE_LEGACY_PART_SYS =          0x80 | LL_PCODE_LEGACY; // PART_SYS
-const LLPCode   LL_PCODE_LEGACY_ROCK =              0x90 | LL_PCODE_LEGACY; // ROCK
-//const LLPCode LL_PCODE_LEGACY_SHOT =              0xA0 | LL_PCODE_LEGACY; // BASIC_SHOT
-//const LLPCode LL_PCODE_LEGACY_SHOT_BIG =          0xB0 | LL_PCODE_LEGACY;
-//const LLPCode LL_PCODE_LEGACY_SMOKE =             0xC0 | LL_PCODE_LEGACY; // SMOKE
-//const LLPCode LL_PCODE_LEGACY_SPARK =             0xD0 | LL_PCODE_LEGACY;// SPARK
-const LLPCode   LL_PCODE_LEGACY_TEXT_BUBBLE =       0xE0 | LL_PCODE_LEGACY; // TEXTBUBBLE
-const LLPCode   LL_PCODE_LEGACY_TREE =              0xF0 | LL_PCODE_LEGACY; // TREE
+//constexpr LLPCode LL_PCODE_LEGACY_ATOR =              0x10 | LL_PCODE_LEGACY; // ATOR
+constexpr LLPCode   LL_PCODE_LEGACY_AVATAR =            0x20 | LL_PCODE_LEGACY; // PLAYER
+//constexpr LLPCode LL_PCODE_LEGACY_BIRD =              0x30 | LL_PCODE_LEGACY; // BIRD
+//constexpr LLPCode LL_PCODE_LEGACY_DEMON =             0x40 | LL_PCODE_LEGACY; // DEMON
+constexpr LLPCode   LL_PCODE_LEGACY_GRASS =             0x50 | LL_PCODE_LEGACY; // GRASS
+constexpr LLPCode   LL_PCODE_TREE_NEW =                 0x60 | LL_PCODE_LEGACY; // new trees
+//constexpr LLPCode LL_PCODE_LEGACY_ORACLE =            0x70 | LL_PCODE_LEGACY; // ORACLE
+constexpr LLPCode   LL_PCODE_LEGACY_PART_SYS =          0x80 | LL_PCODE_LEGACY; // PART_SYS
+constexpr LLPCode   LL_PCODE_LEGACY_ROCK =              0x90 | LL_PCODE_LEGACY; // ROCK
+//constexpr LLPCode LL_PCODE_LEGACY_SHOT =              0xA0 | LL_PCODE_LEGACY; // BASIC_SHOT
+//constexpr LLPCode LL_PCODE_LEGACY_SHOT_BIG =          0xB0 | LL_PCODE_LEGACY;
+//constexpr LLPCode LL_PCODE_LEGACY_SMOKE =             0xC0 | LL_PCODE_LEGACY; // SMOKE
+//constexpr LLPCode LL_PCODE_LEGACY_SPARK =             0xD0 | LL_PCODE_LEGACY;// SPARK
+constexpr LLPCode   LL_PCODE_LEGACY_TEXT_BUBBLE =       0xE0 | LL_PCODE_LEGACY; // TEXTBUBBLE
+constexpr LLPCode   LL_PCODE_LEGACY_TREE =              0xF0 | LL_PCODE_LEGACY; // TREE
 
     // hemis
-const LLPCode   LL_PCODE_CYLINDER_HEMI =        LL_PCODE_CYLINDER   | LL_PCODE_HEMI_MASK;
-const LLPCode   LL_PCODE_CONE_HEMI =            LL_PCODE_CONE       | LL_PCODE_HEMI_MASK;
-const LLPCode   LL_PCODE_SPHERE_HEMI =          LL_PCODE_SPHERE     | LL_PCODE_HEMI_MASK;
-const LLPCode   LL_PCODE_TORUS_HEMI =           LL_PCODE_TORUS      | LL_PCODE_HEMI_MASK;
+constexpr LLPCode   LL_PCODE_CYLINDER_HEMI =        LL_PCODE_CYLINDER   | LL_PCODE_HEMI_MASK;
+constexpr LLPCode   LL_PCODE_CONE_HEMI =            LL_PCODE_CONE       | LL_PCODE_HEMI_MASK;
+constexpr LLPCode   LL_PCODE_SPHERE_HEMI =          LL_PCODE_SPHERE     | LL_PCODE_HEMI_MASK;
+constexpr LLPCode   LL_PCODE_TORUS_HEMI =           LL_PCODE_TORUS      | LL_PCODE_HEMI_MASK;
 
 
 // Volumes consist of a profile at the base that is swept around
 // a path to make a volume.
 // The profile code
-const U8    LL_PCODE_PROFILE_MASK       = 0x0f;
-const U8    LL_PCODE_PROFILE_MIN        = 0x00;
-const U8    LL_PCODE_PROFILE_CIRCLE     = 0x00;
-const U8    LL_PCODE_PROFILE_SQUARE     = 0x01;
-const U8    LL_PCODE_PROFILE_ISOTRI     = 0x02;
-const U8    LL_PCODE_PROFILE_EQUALTRI   = 0x03;
-const U8    LL_PCODE_PROFILE_RIGHTTRI   = 0x04;
-const U8    LL_PCODE_PROFILE_CIRCLE_HALF = 0x05;
-const U8    LL_PCODE_PROFILE_MAX        = 0x05;
+constexpr U8    LL_PCODE_PROFILE_MASK       = 0x0f;
+constexpr U8    LL_PCODE_PROFILE_MIN        = 0x00;
+constexpr U8    LL_PCODE_PROFILE_CIRCLE     = 0x00;
+constexpr U8    LL_PCODE_PROFILE_SQUARE     = 0x01;
+constexpr U8    LL_PCODE_PROFILE_ISOTRI     = 0x02;
+constexpr U8    LL_PCODE_PROFILE_EQUALTRI   = 0x03;
+constexpr U8    LL_PCODE_PROFILE_RIGHTTRI   = 0x04;
+constexpr U8    LL_PCODE_PROFILE_CIRCLE_HALF = 0x05;
+constexpr U8    LL_PCODE_PROFILE_MAX        = 0x05;
 
 // Stored in the profile byte
-const U8    LL_PCODE_HOLE_MASK      = 0xf0;
-const U8    LL_PCODE_HOLE_MIN       = 0x00;
-const U8    LL_PCODE_HOLE_SAME      = 0x00;     // same as outside profile
-const U8    LL_PCODE_HOLE_CIRCLE    = 0x10;
-const U8    LL_PCODE_HOLE_SQUARE    = 0x20;
-const U8    LL_PCODE_HOLE_TRIANGLE  = 0x30;
-const U8    LL_PCODE_HOLE_MAX       = 0x03;     // min/max needs to be >> 4 of real min/max
-
-const U8    LL_PCODE_PATH_IGNORE    = 0x00;
-const U8    LL_PCODE_PATH_MIN       = 0x01;     // min/max needs to be >> 4 of real min/max
-const U8    LL_PCODE_PATH_LINE      = 0x10;
-const U8    LL_PCODE_PATH_CIRCLE    = 0x20;
-const U8    LL_PCODE_PATH_CIRCLE2   = 0x30;
-const U8    LL_PCODE_PATH_TEST      = 0x40;
-const U8    LL_PCODE_PATH_FLEXIBLE  = 0x80;
-const U8    LL_PCODE_PATH_MAX       = 0x08;
+constexpr U8    LL_PCODE_HOLE_MASK      = 0xf0;
+constexpr U8    LL_PCODE_HOLE_MIN       = 0x00;
+constexpr U8    LL_PCODE_HOLE_SAME      = 0x00;     // same as outside profile
+constexpr U8    LL_PCODE_HOLE_CIRCLE    = 0x10;
+constexpr U8    LL_PCODE_HOLE_SQUARE    = 0x20;
+constexpr U8    LL_PCODE_HOLE_TRIANGLE  = 0x30;
+constexpr U8    LL_PCODE_HOLE_MAX       = 0x03;     // min/max needs to be >> 4 of real min/max
+
+constexpr U8    LL_PCODE_PATH_IGNORE    = 0x00;
+constexpr U8    LL_PCODE_PATH_MIN       = 0x01;     // min/max needs to be >> 4 of real min/max
+constexpr U8    LL_PCODE_PATH_LINE      = 0x10;
+constexpr U8    LL_PCODE_PATH_CIRCLE    = 0x20;
+constexpr U8    LL_PCODE_PATH_CIRCLE2   = 0x30;
+constexpr U8    LL_PCODE_PATH_TEST      = 0x40;
+constexpr U8    LL_PCODE_PATH_FLEXIBLE  = 0x80;
+constexpr U8    LL_PCODE_PATH_MAX       = 0x08;
 
 //============================================================================
 
 // face identifiers
 typedef U16 LLFaceID;
 
-const LLFaceID  LL_FACE_PATH_BEGIN      = 0x1 << 0;
-const LLFaceID  LL_FACE_PATH_END        = 0x1 << 1;
-const LLFaceID  LL_FACE_INNER_SIDE      = 0x1 << 2;
-const LLFaceID  LL_FACE_PROFILE_BEGIN   = 0x1 << 3;
-const LLFaceID  LL_FACE_PROFILE_END     = 0x1 << 4;
-const LLFaceID  LL_FACE_OUTER_SIDE_0    = 0x1 << 5;
-const LLFaceID  LL_FACE_OUTER_SIDE_1    = 0x1 << 6;
-const LLFaceID  LL_FACE_OUTER_SIDE_2    = 0x1 << 7;
-const LLFaceID  LL_FACE_OUTER_SIDE_3    = 0x1 << 8;
+constexpr LLFaceID  LL_FACE_PATH_BEGIN      = 0x1 << 0;
+constexpr LLFaceID  LL_FACE_PATH_END        = 0x1 << 1;
+constexpr LLFaceID  LL_FACE_INNER_SIDE      = 0x1 << 2;
+constexpr LLFaceID  LL_FACE_PROFILE_BEGIN   = 0x1 << 3;
+constexpr LLFaceID  LL_FACE_PROFILE_END     = 0x1 << 4;
+constexpr LLFaceID  LL_FACE_OUTER_SIDE_0    = 0x1 << 5;
+constexpr LLFaceID  LL_FACE_OUTER_SIDE_1    = 0x1 << 6;
+constexpr LLFaceID  LL_FACE_OUTER_SIDE_2    = 0x1 << 7;
+constexpr LLFaceID  LL_FACE_OUTER_SIDE_3    = 0x1 << 8;
 
 //============================================================================
 
 // sculpt types + flags
 
-const U8 LL_SCULPT_TYPE_NONE      = 0;
-const U8 LL_SCULPT_TYPE_SPHERE    = 1;
-const U8 LL_SCULPT_TYPE_TORUS     = 2;
-const U8 LL_SCULPT_TYPE_PLANE     = 3;
-const U8 LL_SCULPT_TYPE_CYLINDER  = 4;
-const U8 LL_SCULPT_TYPE_MESH      = 5;
-const U8 LL_SCULPT_TYPE_MASK      = LL_SCULPT_TYPE_SPHERE | LL_SCULPT_TYPE_TORUS | LL_SCULPT_TYPE_PLANE |
-    LL_SCULPT_TYPE_CYLINDER | LL_SCULPT_TYPE_MESH;
+constexpr U8 LL_SCULPT_TYPE_NONE      = 0;
+constexpr U8 LL_SCULPT_TYPE_SPHERE    = 1;
+constexpr U8 LL_SCULPT_TYPE_TORUS     = 2;
+constexpr U8 LL_SCULPT_TYPE_PLANE     = 3;
+constexpr U8 LL_SCULPT_TYPE_CYLINDER  = 4;
+constexpr U8 LL_SCULPT_TYPE_MESH      = 5;
+constexpr U8 LL_SCULPT_TYPE_GLTF      = 6;
+constexpr U8 LL_SCULPT_TYPE_MAX       = LL_SCULPT_TYPE_GLTF;
+
+constexpr U8 LL_SCULPT_TYPE_MASK      = LL_SCULPT_TYPE_SPHERE | LL_SCULPT_TYPE_TORUS | LL_SCULPT_TYPE_PLANE |
+    LL_SCULPT_TYPE_CYLINDER | LL_SCULPT_TYPE_MESH | LL_SCULPT_TYPE_GLTF;
 
 // for value checks, assign new value after adding new types
-const U8 LL_SCULPT_TYPE_MAX = LL_SCULPT_TYPE_MESH;
 
-const U8 LL_SCULPT_FLAG_INVERT    = 64;
-const U8 LL_SCULPT_FLAG_MIRROR    = 128;
-const U8 LL_SCULPT_FLAG_MASK = LL_SCULPT_FLAG_INVERT | LL_SCULPT_FLAG_MIRROR;
+constexpr U8 LL_SCULPT_FLAG_INVERT    = 64;
+constexpr U8 LL_SCULPT_FLAG_MIRROR    = 128;
+constexpr U8 LL_SCULPT_FLAG_MASK = LL_SCULPT_FLAG_INVERT | LL_SCULPT_FLAG_MIRROR;
 
-const S32 LL_SCULPT_MESH_MAX_FACES = 8;
+constexpr S32 LL_SCULPT_MESH_MAX_FACES = 8;
 
-extern BOOL gDebugGL;
+extern bool gDebugGL;
 
 class LLProfileParams
 {
@@ -255,11 +257,11 @@ public:
 
     void copyParams(const LLProfileParams &params);
 
-    BOOL importFile(LLFILE *fp);
-    BOOL exportFile(LLFILE *fp) const;
+    bool importFile(LLFILE *fp);
+    bool exportFile(LLFILE *fp) const;
 
-    BOOL importLegacyStream(std::istream& input_stream);
-    BOOL exportLegacyStream(std::ostream& output_stream) const;
+    bool importLegacyStream(std::istream& input_stream);
+    bool exportLegacyStream(std::ostream& output_stream) const;
 
     LLSD asLLSD() const;
     operator LLSD() const { return asLLSD(); }
@@ -391,11 +393,11 @@ public:
 
     void copyParams(const LLPathParams &params);
 
-    BOOL importFile(LLFILE *fp);
-    BOOL exportFile(LLFILE *fp) const;
+    bool importFile(LLFILE *fp);
+    bool exportFile(LLFILE *fp) const;
 
-    BOOL importLegacyStream(std::istream& input_stream);
-    BOOL exportLegacyStream(std::ostream& output_stream) const;
+    bool importLegacyStream(std::istream& input_stream);
+    bool exportLegacyStream(std::ostream& output_stream) const;
 
     LLSD asLLSD() const;
     operator LLSD() const { return asLLSD(); }
@@ -583,11 +585,11 @@ public:
     const LLPathParams &getPathParams() const {return mPathParams;}
     LLPathParams &getPathParams() {return mPathParams;}
 
-    BOOL importFile(LLFILE *fp);
-    BOOL exportFile(LLFILE *fp) const;
+    bool importFile(LLFILE *fp);
+    bool exportFile(LLFILE *fp) const;
 
-    BOOL importLegacyStream(std::istream& input_stream);
-    BOOL exportLegacyStream(std::ostream& output_stream) const;
+    bool importLegacyStream(std::istream& input_stream);
+    bool exportLegacyStream(std::ostream& output_stream) const;
 
     LLSD sculptAsLLSD() const;
     bool sculptFromLLSD(LLSD& sd);
@@ -621,7 +623,7 @@ public:
     bool setRevolutions(const F32 revolutions); // 1 to 4
     bool setRadiusOffset(const F32 radius_offset);
     bool setSkew(const F32 skew);
-    bool setSculptID(const LLUUID sculpt_id, U8 sculpt_type);
+    bool setSculptID(const LLUUID& sculpt_id, U8 sculpt_type);
 
     static bool validate(U8 prof_curve, F32 prof_begin, F32 prof_end, F32 hollow,
         U8 path_curve, F32 path_begin, F32 path_end,
@@ -653,7 +655,7 @@ public:
     const U8& getSculptType() const     { return mSculptType;                   }
     bool isSculpt() const;
     bool isMeshSculpt() const;
-    BOOL isConvex() const;
+    bool isConvex() const;
 
     // 'begin' and 'end' should be in range [0, 1] (they will be clamped)
     // (begin, end) = (0, 1) will not change the volume
@@ -688,9 +690,9 @@ class LLProfile
 
 public:
     LLProfile()
-        : mOpen(FALSE),
-          mConcave(FALSE),
-          mDirty(TRUE),
+        : mOpen(false),
+          mConcave(false),
+          mDirty(true),
           mTotalOut(0),
           mTotal(2)
     {
@@ -698,23 +700,23 @@ public:
 
     S32  getTotal() const                               { return mTotal; }
     S32  getTotalOut() const                            { return mTotalOut; }   // Total number of outside points
-    BOOL isFlat(S32 face) const                         { return (mFaces[face].mCount == 2); }
-    BOOL isOpen() const                                 { return mOpen; }
-    void setDirty()                                     { mDirty     = TRUE; }
-
-    static S32 getNumPoints(const LLProfileParams& params, BOOL path_open, F32 detail = 1.0f, S32 split = 0,
-                  BOOL is_sculpted = FALSE, S32 sculpt_size = 0);
-    BOOL generate(const LLProfileParams& params, BOOL path_open, F32 detail = 1.0f, S32 split = 0,
-                  BOOL is_sculpted = FALSE, S32 sculpt_size = 0);
-    BOOL isConcave() const                              { return mConcave; }
+    bool isFlat(S32 face) const                         { return (mFaces[face].mCount == 2); }
+    bool isOpen() const                                 { return mOpen; }
+    void setDirty()                                     { mDirty = true; }
+
+    static S32 getNumPoints(const LLProfileParams& params, bool path_open, F32 detail = 1.0f, S32 split = 0,
+                  bool is_sculpted = false, S32 sculpt_size = 0);
+    bool generate(const LLProfileParams& params, bool path_open, F32 detail = 1.0f, S32 split = 0,
+                  bool is_sculpted = false, S32 sculpt_size = 0);
+    bool isConcave() const                              { return mConcave; }
 public:
     struct Face
     {
         S32       mIndex;
         S32       mCount;
         F32       mScaleU;
-        BOOL      mCap;
-        BOOL      mFlat;
+        bool      mCap;
+        bool      mFlat;
         LLFaceID  mFaceID;
     };
 
@@ -733,14 +735,14 @@ protected:
     static S32 getNumNGonPoints(const LLProfileParams& params, S32 sides, F32 offset=0.0f, F32 bevel = 0.0f, F32 ang_scale = 1.f, S32 split = 0);
     void genNGon(const LLProfileParams& params, S32 sides, F32 offset=0.0f, F32 bevel = 0.0f, F32 ang_scale = 1.f, S32 split = 0);
 
-    Face* addHole(const LLProfileParams& params, BOOL flat, F32 sides, F32 offset, F32 box_hollow, F32 ang_scale, S32 split = 0);
+    Face* addHole(const LLProfileParams& params, bool flat, F32 sides, F32 offset, F32 box_hollow, F32 ang_scale, S32 split = 0);
     Face* addCap (S16 faceID);
-    Face* addFace(S32 index, S32 count, F32 scaleU, S16 faceID, BOOL flat);
+    Face* addFace(S32 index, S32 count, F32 scaleU, S16 faceID, bool flat);
 
 protected:
-    BOOL          mOpen;
-    BOOL          mConcave;
-    BOOL          mDirty;
+    bool          mOpen;
+    bool          mConcave;
+    bool          mDirty;
 
     S32           mTotalOut;
     S32           mTotal;
@@ -780,9 +782,9 @@ public:
 
 public:
     LLPath()
-        : mOpen(FALSE),
+        : mOpen(false),
           mTotal(0),
-          mDirty(TRUE),
+          mDirty(true),
           mStep(1)
     {
     }
@@ -793,12 +795,12 @@ public:
     static S32 getNumNGonPoints(const LLPathParams& params, S32 sides, F32 offset=0.0f, F32 end_scale = 1.f, F32 twist_scale = 1.f);
 
     void genNGon(const LLPathParams& params, S32 sides, F32 offset=0.0f, F32 end_scale = 1.f, F32 twist_scale = 1.f);
-    virtual BOOL generate(const LLPathParams& params, F32 detail=1.0f, S32 split = 0,
-                          BOOL is_sculpted = FALSE, S32 sculpt_size = 0);
+    virtual bool generate(const LLPathParams& params, F32 detail=1.0f, S32 split = 0,
+                          bool is_sculpted = false, S32 sculpt_size = 0);
 
-    BOOL isOpen() const                     { return mOpen; }
+    bool isOpen() const                     { return mOpen; }
     F32 getStep() const                     { return mStep; }
-    void setDirty()                         { mDirty     = TRUE; }
+    void setDirty()                         { mDirty = true; }
 
     S32 getPathLength() const               { return (S32)mPath.size(); }
 
@@ -810,9 +812,9 @@ public:
     LLAlignedArray<PathPt, 64> mPath;
 
 protected:
-    BOOL          mOpen;
+    bool          mOpen;
     S32           mTotal;
-    BOOL          mDirty;
+    bool          mDirty;
     F32           mStep;
 };
 
@@ -820,8 +822,8 @@ class LLDynamicPath : public LLPath
 {
 public:
     LLDynamicPath() : LLPath() { }
-    /*virtual*/ BOOL generate(const LLPathParams& params, F32 detail=1.0f, S32 split = 0,
-                              BOOL is_sculpted = FALSE, S32 sculpt_size = 0);
+    /*virtual*/ bool generate(const LLPathParams& params, F32 detail=1.0f, S32 split = 0,
+                              bool is_sculpted = false, S32 sculpt_size = 0);
 };
 
 // Yet another "face" class - caches volume-specific, but not instance-specific data for faces)
@@ -871,7 +873,7 @@ private:
     void freeData();
 public:
 
-    BOOL create(LLVolume* volume, BOOL partial_build = FALSE);
+    bool create(LLVolume* volume, bool partial_build = false);
     void createTangents();
 
     void resizeVertices(S32 num_verts);
@@ -973,14 +975,14 @@ public:
     U8* mJointIndices;
 #endif
 
-    mutable BOOL mWeightsScrubbed;
+    mutable bool mWeightsScrubbed;
 
     // Which joints are rigged to, and the bounding box of any rigged
     // vertices per joint.
     LLJointRiggingInfoTab mJointRiggingInfoTab;
 
     //whether or not face has been cache optimized
-    BOOL mOptimized;
+    bool mOptimized;
 
     // if this is a mesh asset, scale and translation that were applied
     // when encoding the source mesh into a unit cube
@@ -991,9 +993,9 @@ private:
     LLVolumeOctree* mOctree;
     LLVolumeTriangle* mOctreeTriangles;
 
-    BOOL createUnCutCubeCap(LLVolume* volume, BOOL partial_build = FALSE);
-    BOOL createCap(LLVolume* volume, BOOL partial_build = FALSE);
-    BOOL createSide(LLVolume* volume, BOOL partial_build = FALSE);
+    bool createUnCutCubeCap(LLVolume* volume, bool partial_build = false);
+    bool createCap(LLVolume* volume, bool partial_build = false);
+    bool createSide(LLVolume* volume, bool partial_build = false);
 };
 
 class LLVolume : public LLRefCount
@@ -1015,12 +1017,12 @@ public:
         S32 mCountT;
     };
 
-    LLVolume(const LLVolumeParams &params, const F32 detail, const BOOL generate_single_face = FALSE, const BOOL is_unique = FALSE);
+    LLVolume(const LLVolumeParams &params, const F32 detail, const bool generate_single_face = false, const bool is_unique = false);
 
     U8 getProfileType() const                               { return mParams.getProfileParams().getCurveType(); }
     U8 getPathType() const                                  { return mParams.getPathParams().getCurveType(); }
     S32 getNumFaces() const;
-    S32 getNumVolumeFaces() const                           { return mVolumeFaces.size(); }
+    S32 getNumVolumeFaces() const                           { return static_cast<S32>(mVolumeFaces.size()); }
     F32 getDetail() const                                   { return mDetail; }
     F32 getSurfaceArea() const                              { return mSurfaceArea; }
     const LLVolumeParams& getParams() const                 { return mParams; }
@@ -1037,10 +1039,10 @@ public:
     void regen();
     void genTangents(S32 face);
 
-    BOOL isConvex() const;
-    BOOL isCap(S32 face);
-    BOOL isFlat(S32 face);
-    BOOL isUnique() const                                   { return mUnique; }
+    bool isConvex() const;
+    bool isCap(S32 face);
+    bool isFlat(S32 face);
+    bool isUnique() const                                   { return mUnique; }
 
     S32 getSculptLevel() const                              { return mSculptLevel; }
     void setSculptLevel(S32 level)                          { mSculptLevel = level; }
@@ -1048,7 +1050,7 @@ public:
 
     static void getLoDTriangleCounts(const LLVolumeParams& params, S32* counts);
 
-    S32 getNumTriangles(S32* vcount = NULL) const;
+    S32 getNumTriangles(S32* vcount = nullptr) const;
 
     void generateSilhouetteVertices(std::vector<LLVector3> &vertices,
                                     std::vector<LLVector3> &normals,
@@ -1062,15 +1064,15 @@ public:
     //Line segment must be in volume space.
     S32 lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
                              S32 face = -1,                          // which face to check, -1 = ALL_SIDES
-                             LLVector4a* intersection = NULL,         // return the intersection point
-                             LLVector2* tex_coord = NULL,            // return the texture coordinates of the intersection point
-                             LLVector4a* normal = NULL,               // return the surface normal at the intersection point
-                             LLVector4a* tangent = NULL             // return the surface tangent at the intersection point
+                             LLVector4a* intersection = nullptr,     // return the intersection point
+                             LLVector2* tex_coord = nullptr,         // return the texture coordinates of the intersection point
+                             LLVector4a* normal = nullptr,           // return the surface normal at the intersection point
+                             LLVector4a* tangent = nullptr           // return the surface tangent at the intersection point
         );
 
     LLFaceID generateFaceMask();
 
-    BOOL isFaceMaskValid(LLFaceID face_mask);
+    bool isFaceMaskValid(LLFaceID face_mask);
     static S32 sNumMeshPoints;
 
     friend std::ostream& operator<<(std::ostream &s, const LLVolume &volume);
@@ -1099,11 +1101,9 @@ private:
     F32 sculptGetSurfaceArea();
     void sculptGenerateEmptyPlaceholder();
     void sculptGenerateSpherePlaceholder();
-    void sculptCalcMeshResolution(U16 width, U16 height, U8 type, S32& s, S32& t);
-
 
 protected:
-    BOOL generate();
+    bool generate();
     void createVolumeFaces();
 public:
     bool unpackVolumeFaces(std::istream& is, S32 size);
@@ -1118,7 +1118,7 @@ public:
     virtual bool isMeshAssetUnavaliable();
 
  protected:
-    BOOL mUnique;
+    bool mUnique;
     F32 mDetail;
     S32 mSculptLevel;
     F32 mSurfaceArea; //unscaled surface area
@@ -1131,7 +1131,7 @@ public:
     LLAlignedArray<LLVector4a,64> mMesh;
 
 
-    BOOL mGenerateSingleFace;
+    bool mGenerateSingleFace;
     face_list_t mVolumeFaces;
 
 public:
@@ -1145,18 +1145,13 @@ std::ostream& operator<<(std::ostream &s, const LLVolumeParams &volume_params);
 
 void LLCalculateTangentArray(U32 vertexCount, const LLVector4a *vertex, const LLVector4a *normal, const LLVector2 *texcoord, U32 triangleCount, const U16* index_array, LLVector4a *tangent);
 
-BOOL LLLineSegmentBoxIntersect(const F32* start, const F32* end, const F32* center, const F32* size);
-BOOL LLLineSegmentBoxIntersect(const LLVector3& start, const LLVector3& end, const LLVector3& center, const LLVector3& size);
-BOOL LLLineSegmentBoxIntersect(const LLVector4a& start, const LLVector4a& end, const LLVector4a& center, const LLVector4a& size);
-
-//BOOL LLTriangleRayIntersect(const LLVector3& vert0, const LLVector3& vert1, const LLVector3& vert2, const LLVector3& orig, const LLVector3& dir,
-//                          F32& intersection_a, F32& intersection_b, F32& intersection_t, BOOL two_sided);
+bool LLLineSegmentBoxIntersect(const F32* start, const F32* end, const F32* center, const F32* size);
+bool LLLineSegmentBoxIntersect(const LLVector3& start, const LLVector3& end, const LLVector3& center, const LLVector3& size);
+bool LLLineSegmentBoxIntersect(const LLVector4a& start, const LLVector4a& end, const LLVector4a& center, const LLVector4a& size);
 
-BOOL LLTriangleRayIntersect(const LLVector4a& vert0, const LLVector4a& vert1, const LLVector4a& vert2, const LLVector4a& orig, const LLVector4a& dir,
+bool LLTriangleRayIntersect(const LLVector4a& vert0, const LLVector4a& vert1, const LLVector4a& vert2, const LLVector4a& orig, const LLVector4a& dir,
                             F32& intersection_a, F32& intersection_b, F32& intersection_t);
-BOOL LLTriangleRayIntersectTwoSided(const LLVector4a& vert0, const LLVector4a& vert1, const LLVector4a& vert2, const LLVector4a& orig, const LLVector4a& dir,
+bool LLTriangleRayIntersectTwoSided(const LLVector4a& vert0, const LLVector4a& vert1, const LLVector4a& vert2, const LLVector4a& orig, const LLVector4a& dir,
                             F32& intersection_a, F32& intersection_b, F32& intersection_t);
 
-
-
 #endif
diff --git a/indra/llmath/llvolumemgr.cpp b/indra/llmath/llvolumemgr.cpp
index 6f82335b3f..bb0c94d513 100644
--- a/indra/llmath/llvolumemgr.cpp
+++ b/indra/llmath/llvolumemgr.cpp
@@ -59,9 +59,9 @@ LLVolumeMgr::~LLVolumeMgr()
     mDataMutex = NULL;
 }
 
-BOOL LLVolumeMgr::cleanup()
+bool LLVolumeMgr::cleanup()
 {
-    BOOL no_refs = TRUE;
+    bool no_refs = true;
     if (mDataMutex)
     {
         mDataMutex->lock();
@@ -71,9 +71,9 @@ BOOL LLVolumeMgr::cleanup()
          iter != end; iter++)
     {
         LLVolumeLODGroup *volgroupp = iter->second;
-        if (volgroupp->cleanupRefs() == false)
+        if (!volgroupp->cleanupRefs())
         {
-            no_refs = FALSE;
+            no_refs = false;
         }
         delete volgroupp;
     }
@@ -301,7 +301,7 @@ LLVolume* LLVolumeLODGroup::refLOD(const S32 lod)
     return mVolumeLODs[lod];
 }
 
-BOOL LLVolumeLODGroup::derefLOD(LLVolume *volumep)
+bool LLVolumeLODGroup::derefLOD(LLVolume *volumep)
 {
     llassert_always(mRefs > 0);
     mRefs--;
@@ -317,11 +317,11 @@ BOOL LLVolumeLODGroup::derefLOD(LLVolume *volumep)
                 mVolumeLODs[i] = NULL;
             }
 #endif
-            return TRUE;
+            return true;
         }
     }
     LL_ERRS() << "Deref of non-matching LOD in volume LOD group" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
 S32 LLVolumeLODGroup::getDetailFromTan(const F32 tan_angle)
diff --git a/indra/llmath/llvolumemgr.h b/indra/llmath/llvolumemgr.h
index b46e9aa725..2e0ce3e88a 100644
--- a/indra/llmath/llvolumemgr.h
+++ b/indra/llmath/llvolumemgr.h
@@ -56,7 +56,7 @@ public:
     static S32 getVolumeDetailFromScale(F32 scale);
 
     LLVolume* refLOD(const S32 detail);
-    BOOL derefLOD(LLVolume *volumep);
+    bool derefLOD(LLVolume *volumep);
     S32 getNumRefs() const { return mRefs; }
 
     const LLVolumeParams* getVolumeParams() const { return &mVolumeParams; };
@@ -80,7 +80,7 @@ class LLVolumeMgr
 public:
     LLVolumeMgr();
     virtual ~LLVolumeMgr();
-    BOOL cleanup();         // Cleanup all volumes being managed, returns TRUE if no dangling references
+    bool cleanup();         // Cleanup all volumes being managed, returns true if no dangling references
 
     virtual LLVolumeLODGroup* getGroup( const LLVolumeParams& volume_params ) const;
 
diff --git a/indra/llmath/llvolumeoctree.cpp b/indra/llmath/llvolumeoctree.cpp
index 341b9a6465..71288daa89 100644
--- a/indra/llmath/llvolumeoctree.cpp
+++ b/indra/llmath/llvolumeoctree.cpp
@@ -27,7 +27,7 @@
 #include "llvolumeoctree.h"
 #include "llvector4a.h"
 
-BOOL LLLineSegmentBoxIntersect(const LLVector4a& start, const LLVector4a& end, const LLVector4a& center, const LLVector4a& size)
+bool LLLineSegmentBoxIntersect(const LLVector4a& start, const LLVector4a& end, const LLVector4a& center, const LLVector4a& size)
 {
     LLVector4a fAWdU;
     LLVector4a dir;
@@ -71,10 +71,9 @@ BOOL LLLineSegmentBoxIntersect(const LLVector4a& start, const LLVector4a& end, c
 
     grt = f.greaterThan(rhs).getGatheredBits();
 
-    return (grt & 0x7) ? false : true;
+    return (grt & 0x7) == 0;
 }
 
-
 LLVolumeOctreeListener::LLVolumeOctreeListener(LLOctreeNode<LLVolumeTriangle, LLVolumeTriangle*>* node)
 {
     node->addListener(this);
@@ -114,7 +113,7 @@ void LLOctreeTriangleRayIntersect::traverse(const LLOctreeNode<LLVolumeTriangle,
     if (LLLineSegmentBoxIntersect(mStart, mEnd, vl->mBounds[0], vl->mBounds[1]))
     {
         node->accept(this);
-        for (S32 i = 0; i < node->getChildCount(); ++i)
+        for (U32 i = 0; i < node->getChildCount(); ++i)
         {
             traverse(node->getChild(i));
         }
@@ -152,7 +151,7 @@ void LLOctreeTriangleRayIntersect::visit(const LLOctreeNode<LLVolumeTriangle, LL
                 U32 idx1 = tri->mIndex[1];
                 U32 idx2 = tri->mIndex[2];
 
-                if (mTexCoord != NULL)
+                if (mTexCoord != NULL && mFace->mTexCoords)
                 {
                     LLVector2* tc = (LLVector2*) mFace->mTexCoords;
                     *mTexCoord = ((1.f - a - b)  * tc[idx0] +
@@ -161,7 +160,7 @@ void LLOctreeTriangleRayIntersect::visit(const LLOctreeNode<LLVolumeTriangle, LL
 
                 }
 
-                if (mNormal != NULL)
+                if (mNormal != NULL && mFace->mNormals)
                 {
                     LLVector4a* norm = mFace->mNormals;
 
@@ -181,7 +180,7 @@ void LLOctreeTriangleRayIntersect::visit(const LLOctreeNode<LLVolumeTriangle, LL
                     *mNormal        = n1;
                 }
 
-                if (mTangent != NULL)
+                if (mTangent != NULL && mFace->mTangents)
                 {
                     LLVector4a* tangents = mFace->mTangents;
 
diff --git a/indra/llmath/llvolumeoctree.h b/indra/llmath/llvolumeoctree.h
index cf176b5afe..05d45f7b5f 100644
--- a/indra/llmath/llvolumeoctree.h
+++ b/indra/llmath/llvolumeoctree.h
@@ -48,12 +48,6 @@ public:
         *this = rhs;
     }
 
-    const LLVolumeTriangle& operator=(const LLVolumeTriangle& rhs)
-    {
-        LL_ERRS() << "Illegal operation!" << LL_ENDL;
-        return *this;
-    }
-
     ~LLVolumeTriangle()
     {
 
@@ -192,7 +186,7 @@ public:
             llassert(!branch->isLeaf()); // Empty leaf
         }
 
-        for (S32 i = 0; i < branch->getChildCount(); ++i)
+        for (U32 i = 0; i < branch->getChildCount(); ++i)
         {  //stretch by child extents
             LLVolumeOctreeListener* child = (LLVolumeOctreeListener*)branch->getChild(i)->getListener(0);
             min.setMin(min, child->mExtents[0]);
diff --git a/indra/llmath/m3math.cpp b/indra/llmath/m3math.cpp
index 2cefc44da3..472d340af5 100644
--- a/indra/llmath/m3math.cpp
+++ b/indra/llmath/m3math.cpp
@@ -528,10 +528,10 @@ bool operator==(const LLMatrix3 &a, const LLMatrix3 &b)
         for (j = 0; j < NUM_VALUES_IN_MAT3; j++)
         {
             if (a.mMatrix[j][i] != b.mMatrix[j][i])
-                return FALSE;
+                return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 bool operator!=(const LLMatrix3 &a, const LLMatrix3 &b)
@@ -542,10 +542,10 @@ bool operator!=(const LLMatrix3 &a, const LLMatrix3 &b)
         for (j = 0; j < NUM_VALUES_IN_MAT3; j++)
         {
             if (a.mMatrix[j][i] != b.mMatrix[j][i])
-                return TRUE;
+                return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 const LLMatrix3& operator*=(LLMatrix3 &a, const LLMatrix3 &b)
diff --git a/indra/llmath/m4math.cpp b/indra/llmath/m4math.cpp
index 16ce00d963..c46ee587cb 100644
--- a/indra/llmath/m4math.cpp
+++ b/indra/llmath/m4math.cpp
@@ -744,10 +744,10 @@ bool operator==(const LLMatrix4 &a, const LLMatrix4 &b)
         for (j = 0; j < NUM_VALUES_IN_MAT4; j++)
         {
             if (a.mMatrix[j][i] != b.mMatrix[j][i])
-                return FALSE;
+                return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 bool operator!=(const LLMatrix4 &a, const LLMatrix4 &b)
@@ -758,10 +758,10 @@ bool operator!=(const LLMatrix4 &a, const LLMatrix4 &b)
         for (j = 0; j < NUM_VALUES_IN_MAT4; j++)
         {
             if (a.mMatrix[j][i] != b.mMatrix[j][i])
-                return TRUE;
+                return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 bool operator<(const LLMatrix4& a, const LLMatrix4 &b)
diff --git a/indra/llmath/raytrace.cpp b/indra/llmath/raytrace.cpp
index de51313fa2..893bf1fc70 100644
--- a/indra/llmath/raytrace.cpp
+++ b/indra/llmath/raytrace.cpp
@@ -34,7 +34,7 @@
 #include "raytrace.h"
 
 
-BOOL line_plane(const LLVector3 &line_point, const LLVector3 &line_direction,
+bool line_plane(const LLVector3 &line_point, const LLVector3 &line_direction,
                 const LLVector3 &plane_point, const LLVector3 plane_normal,
                 LLVector3 &intersection)
 {
@@ -43,18 +43,18 @@ BOOL line_plane(const LLVector3 &line_point, const LLVector3 &line_direction,
     {
         // line is perpendicular to plane normal
         // so it is either entirely on plane, or not on plane at all
-        return FALSE;
+        return false;
     }
     // Ax + By, + Cz + D = 0
     // D = - (plane_point * plane_normal)
     // N = line_direction * plane_normal
     // intersection = line_point - ((D + plane_normal * line_point) / N) * line_direction
     intersection = line_point - ((plane_normal * line_point - plane_point * plane_normal) / N) * line_direction;
-    return TRUE;
+    return true;
 }
 
 
-BOOL ray_plane(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_plane(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                const LLVector3 &plane_point, const LLVector3 plane_normal,
                LLVector3 &intersection)
 {
@@ -63,7 +63,7 @@ BOOL ray_plane(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     {
         // ray is perpendicular to plane normal
         // so it is either entirely on plane, or not on plane at all
-        return FALSE;
+        return false;
     }
     // Ax + By, + Cz + D = 0
     // D = - (plane_point * plane_normal)
@@ -73,14 +73,14 @@ BOOL ray_plane(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     if (alpha < 0.0f)
     {
         // ray points away from plane
-        return FALSE;
+        return false;
     }
     intersection = ray_point + alpha * ray_direction;
-    return TRUE;
+    return true;
 }
 
 
-BOOL ray_circle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_circle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                 const LLVector3 &circle_center, const LLVector3 plane_normal, F32 circle_radius,
                 LLVector3 &intersection)
 {
@@ -88,14 +88,14 @@ BOOL ray_circle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     {
         if (circle_radius >= (intersection - circle_center).magVec())
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL ray_triangle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_triangle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                   const LLVector3 &point_0, const LLVector3 &point_1, const LLVector3 &point_2,
                   LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -112,15 +112,15 @@ BOOL ray_triangle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             intersection_normal * (side_12 % (intersection - point_1)) >= 0.0f  &&
             intersection_normal * (side_20 % (intersection - point_2)) >= 0.0f)
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
 // assumes a parallelogram
-BOOL ray_quadrangle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_quadrangle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                     const LLVector3 &point_0, const LLVector3 &point_1, const LLVector3 &point_2,
                     LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -140,14 +140,14 @@ BOOL ray_quadrangle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             intersection_normal * (side_23 % (intersection - point_2)) >= 0.0f  &&
             intersection_normal * (side_30 % (intersection - point_3)) >= 0.0f)
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL ray_sphere(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_sphere(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                 const LLVector3 &sphere_center, F32 sphere_radius,
                 LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -160,7 +160,7 @@ BOOL ray_sphere(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     F32 radius_squared = sphere_radius * sphere_radius;
     if (shortest_distance > radius_squared)
     {
-        return FALSE;
+        return false;
     }
 
     F32 half_chord = (F32) sqrt(radius_squared - shortest_distance);
@@ -170,7 +170,7 @@ BOOL ray_sphere(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     if (dot < 0.0f)
     {
         // ray shoots away from sphere and is not inside it
-        return FALSE;
+        return false;
     }
 
     shortest_distance = ray_direction * ((closest_approach - half_chord * ray_direction) - ray_point);
@@ -195,11 +195,11 @@ BOOL ray_sphere(const LLVector3 &ray_point, const LLVector3 &ray_direction,
         intersection_normal.setVec(0.0f, 0.0f, 0.0f);
     }
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                   const LLVector3 &cyl_center, const LLVector3 &cyl_scale, const LLQuaternion &cyl_rotation,
                   LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -242,7 +242,7 @@ BOOL ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                 if (dot > 0.0f)
                 {
                     // ray points away from cylinder bottom
-                    return FALSE;
+                    return false;
                 }
                 // ray hit bottom of cylinder from outside
                 intersection = ray_point - shortest_distance * cyl_axis;
@@ -270,15 +270,15 @@ BOOL ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                 if (dot < 0.0f)
                 {
                     // ray points away from cylinder bottom
-                    return FALSE;
+                    return false;
                 }
                 // ray hit top from outside
                 intersection = ray_point - (shortest_distance + cyl_length) * cyl_axis;
                 intersection_normal = -cyl_axis;
             }
-            return TRUE;
+            return true;
         }
-        return FALSE;
+        return false;
     }
 
     // check for intersection with infinite cylinder
@@ -298,8 +298,8 @@ BOOL ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
         out = dist_to_closest_point + half_chord_length;    // dist to exiting point
         if (out < 0.0f)
         {
-            // cylinder is behind the ray, so we return FALSE
-            return FALSE;
+            // cylinder is behind the ray, so we return false
+            return false;
         }
 
         in = dist_to_closest_point - half_chord_length;     // dist to entering point
@@ -341,14 +341,14 @@ BOOL ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                 if (shortest_distance > out)
                 {
                     // ray missed the finite cylinder
-                    return FALSE;
+                    return false;
                 }
                 if (shortest_distance > in)
                 {
                     // ray intersects cylinder at top plane
                     intersection = temp_vector;
                     intersection_normal = -cyl_axis;
-                    return TRUE;
+                    return true;
                 }
             }
             else
@@ -357,7 +357,7 @@ BOOL ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                 if (shortest_distance < in)
                 {
                     // missed the finite cylinder
-                    return FALSE;
+                    return false;
                 }
             }
 
@@ -370,14 +370,14 @@ BOOL ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                 if (shortest_distance > out)
                 {
                     // ray missed the finite cylinder
-                    return FALSE;
+                    return false;
                 }
                 if (shortest_distance > in)
                 {
                     // ray intersects cylinder at bottom plane
                     intersection = temp_vector;
                     intersection_normal = cyl_axis;
-                    return TRUE;
+                    return true;
                 }
             }
             else
@@ -386,7 +386,7 @@ BOOL ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                 if (shortest_distance < in)
                 {
                     // ray missed the finite cylinder
-                    return FALSE;
+                    return false;
                 }
             }
 
@@ -399,14 +399,14 @@ BOOL ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             if (shortest_distance < 0.0f  ||  shortest_distance > cyl_length)
             {
                 // ray missed finite cylinder
-                return FALSE;
+                return false;
             }
         }
 
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 
@@ -710,7 +710,7 @@ U32 ray_box(const LLVector3 &ray_point, const LLVector3 &ray_direction,
 }
 
 
-BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                const LLVector3 &prism_center, const LLVector3 &prism_scale, const LLQuaternion &prism_rotation,
                LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -751,7 +751,7 @@ BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     point5 = (point5 * prism_rotation) + prism_center;
 
     // test ray intersection for each face
-    BOOL b_hit = FALSE;
+    bool b_hit = false;
     LLVector3 face_intersection, face_normal;
     F32 distance_squared = 0.0f;
     F32 temp;
@@ -761,14 +761,14 @@ BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
         ray_quadrangle(ray_point, ray_direction, point5, point2, point0, intersection, intersection_normal))
     {
         distance_squared = (ray_point - intersection).magVecSquared();
-        b_hit = TRUE;
+        b_hit = true;
     }
 
     // face 1
     if (ray_direction * ( (point0 - point3) % (point2 - point3)) < 0.0f  &&
         ray_triangle(ray_point, ray_direction, point2, point3, point0, face_intersection, face_normal))
     {
-        if (TRUE == b_hit)
+        if (b_hit)
         {
             temp = (ray_point - face_intersection).magVecSquared();
             if (temp < distance_squared)
@@ -783,7 +783,7 @@ BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             distance_squared = (ray_point - face_intersection).magVecSquared();
             intersection = face_intersection;
             intersection_normal = face_normal;
-            b_hit = TRUE;
+            b_hit = true;
         }
     }
 
@@ -791,7 +791,7 @@ BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     if (ray_direction * ( (point1 - point4) % (point3 - point4)) < 0.0f  &&
         ray_quadrangle(ray_point, ray_direction, point3, point4, point1, face_intersection, face_normal))
     {
-        if (TRUE == b_hit)
+        if (b_hit)
         {
             temp = (ray_point - face_intersection).magVecSquared();
             if (temp < distance_squared)
@@ -806,7 +806,7 @@ BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             distance_squared = (ray_point - face_intersection).magVecSquared();
             intersection = face_intersection;
             intersection_normal = face_normal;
-            b_hit = TRUE;
+            b_hit = true;
         }
     }
 
@@ -814,7 +814,7 @@ BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     if (ray_direction * ( (point5 - point4) % (point1 - point4)) < 0.0f  &&
         ray_triangle(ray_point, ray_direction, point1, point4, point5, face_intersection, face_normal))
     {
-        if (TRUE == b_hit)
+        if (b_hit)
         {
             temp = (ray_point - face_intersection).magVecSquared();
             if (temp < distance_squared)
@@ -829,7 +829,7 @@ BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             distance_squared = (ray_point - face_intersection).magVecSquared();
             intersection = face_intersection;
             intersection_normal = face_normal;
-            b_hit = TRUE;
+            b_hit = true;
         }
     }
 
@@ -837,7 +837,7 @@ BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     if (ray_direction * ( (point4 - point5) % (point2 - point5)) < 0.0f  &&
         ray_quadrangle(ray_point, ray_direction, point2, point5, point4, face_intersection, face_normal))
     {
-        if (TRUE == b_hit)
+        if (b_hit)
         {
             temp = (ray_point - face_intersection).magVecSquared();
             if (temp < distance_squared)
@@ -852,7 +852,7 @@ BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             distance_squared = (ray_point - face_intersection).magVecSquared();
             intersection = face_intersection;
             intersection_normal = face_normal;
-            b_hit = TRUE;
+            b_hit = true;
         }
     }
 
@@ -860,7 +860,7 @@ BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
 }
 
 
-BOOL ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                      const LLVector3 &t_center, const LLVector3 &t_scale, const LLQuaternion &t_rotation,
                      LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -890,7 +890,7 @@ BOOL ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     point3 = (point3 * t_rotation) + t_center;
 
     // test ray intersection for each face
-    BOOL b_hit = FALSE;
+    bool b_hit = false;
     LLVector3 face_intersection, face_normal;
     F32 distance_squared = 1.0e12f;
     F32 temp;
@@ -900,14 +900,14 @@ BOOL ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
         ray_triangle(ray_point, ray_direction, point1, point2, point0, intersection, intersection_normal))
     {
         distance_squared = (ray_point - intersection).magVecSquared();
-        b_hit = TRUE;
+        b_hit = true;
     }
 
     // face 1
     if (ray_direction * ( (point3 - point2) % (point0 - point2)) < 0.0f  &&
         ray_triangle(ray_point, ray_direction, point2, point3, point0, face_intersection, face_normal))
     {
-        if (TRUE == b_hit)
+        if (b_hit)
         {
             temp = (ray_point - face_intersection).magVecSquared();
             if (temp < distance_squared)
@@ -922,7 +922,7 @@ BOOL ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             distance_squared = (ray_point - face_intersection).magVecSquared();
             intersection = face_intersection;
             intersection_normal = face_normal;
-            b_hit = TRUE;
+            b_hit = true;
         }
     }
 
@@ -930,7 +930,7 @@ BOOL ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     if (ray_direction * ( (point1 - point3) % (point0 - point3)) < 0.0f  &&
         ray_triangle(ray_point, ray_direction, point3, point1, point0, face_intersection, face_normal))
     {
-        if (TRUE == b_hit)
+        if (b_hit)
         {
             temp = (ray_point - face_intersection).magVecSquared();
             if (temp < distance_squared)
@@ -945,7 +945,7 @@ BOOL ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             distance_squared = (ray_point - face_intersection).magVecSquared();
             intersection = face_intersection;
             intersection_normal = face_normal;
-            b_hit = TRUE;
+            b_hit = true;
         }
     }
 
@@ -953,7 +953,7 @@ BOOL ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     if (ray_direction * ( (point2 - point3) % (point1 - point3)) < 0.0f  &&
         ray_triangle(ray_point, ray_direction, point3, point2, point1, face_intersection, face_normal))
     {
-        if (TRUE == b_hit)
+        if (b_hit)
         {
             temp = (ray_point - face_intersection).magVecSquared();
             if (temp < distance_squared)
@@ -966,7 +966,7 @@ BOOL ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
         {
             intersection = face_intersection;
             intersection_normal = face_normal;
-            b_hit = TRUE;
+            b_hit = true;
         }
     }
 
@@ -974,7 +974,7 @@ BOOL ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
 }
 
 
-BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                  const LLVector3 &p_center, const LLVector3 &p_scale, const LLQuaternion &p_rotation,
                  LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -997,7 +997,7 @@ BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     point4 = (point4 * p_rotation) + p_center;
 
     // test ray intersection for each face
-    BOOL b_hit = FALSE;
+    bool b_hit = false;
     LLVector3 face_intersection, face_normal;
     F32 distance_squared = 1.0e12f;
     F32 temp;
@@ -1007,14 +1007,14 @@ BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
         ray_triangle(ray_point, ray_direction, point4, point1, point0, intersection, intersection_normal))
     {
         distance_squared = (ray_point - intersection).magVecSquared();
-        b_hit = TRUE;
+        b_hit = true;
     }
 
     // face 1
     if (ray_direction * ( (point2 - point1) % (point0 - point1)) < 0.0f  &&
         ray_triangle(ray_point, ray_direction, point1, point2, point0, face_intersection, face_normal))
     {
-        if (TRUE == b_hit)
+        if (b_hit)
         {
             temp = (ray_point - face_intersection).magVecSquared();
             if (temp < distance_squared)
@@ -1029,7 +1029,7 @@ BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             distance_squared = (ray_point - face_intersection).magVecSquared();
             intersection = face_intersection;
             intersection_normal = face_normal;
-            b_hit = TRUE;
+            b_hit = true;
         }
     }
 
@@ -1037,7 +1037,7 @@ BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     if (ray_direction * ( (point3 - point2) % (point0 - point2)) < 0.0f  &&
         ray_triangle(ray_point, ray_direction, point2, point3, point0, face_intersection, face_normal))
     {
-        if (TRUE == b_hit)
+        if (b_hit)
         {
             temp = (ray_point - face_intersection).magVecSquared();
             if (temp < distance_squared)
@@ -1052,7 +1052,7 @@ BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             distance_squared = (ray_point - face_intersection).magVecSquared();
             intersection = face_intersection;
             intersection_normal = face_normal;
-            b_hit = TRUE;
+            b_hit = true;
         }
     }
 
@@ -1060,7 +1060,7 @@ BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     if (ray_direction * ( (point4 - point3) % (point0 - point3)) < 0.0f  &&
         ray_triangle(ray_point, ray_direction, point3, point4, point0, face_intersection, face_normal))
     {
-        if (TRUE == b_hit)
+        if (b_hit)
         {
             temp = (ray_point - face_intersection).magVecSquared();
             if (temp < distance_squared)
@@ -1075,7 +1075,7 @@ BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
             distance_squared = (ray_point - face_intersection).magVecSquared();
             intersection = face_intersection;
             intersection_normal = face_normal;
-            b_hit = TRUE;
+            b_hit = true;
         }
     }
 
@@ -1083,7 +1083,7 @@ BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
     if (ray_direction * ( (point3 - point4) % (point2 - point4)) < 0.0f  &&
         ray_quadrangle(ray_point, ray_direction, point4, point3, point2, face_intersection, face_normal))
     {
-        if (TRUE == b_hit)
+        if (b_hit)
         {
             temp = (ray_point - face_intersection).magVecSquared();
             if (temp < distance_squared)
@@ -1096,7 +1096,7 @@ BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
         {
             intersection = face_intersection;
             intersection_normal = face_normal;
-            b_hit = TRUE;
+            b_hit = true;
         }
     }
 
@@ -1104,7 +1104,7 @@ BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
 }
 
 
-BOOL linesegment_circle(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_circle(const LLVector3 &point_a, const LLVector3 &point_b,
                         const LLVector3 &circle_center, const LLVector3 plane_normal, F32 circle_radius,
                         LLVector3 &intersection)
 {
@@ -1115,14 +1115,14 @@ BOOL linesegment_circle(const LLVector3 &point_a, const LLVector3 &point_b,
     {
         if (segment_length >= (point_a - intersection).magVec())
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL linesegment_triangle(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_triangle(const LLVector3 &point_a, const LLVector3 &point_b,
                           const LLVector3 &point_0, const LLVector3 &point_1, const LLVector3 &point_2,
                           LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -1133,14 +1133,14 @@ BOOL linesegment_triangle(const LLVector3 &point_a, const LLVector3 &point_b,
     {
         if (segment_length >= (point_a - intersection).magVec())
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL linesegment_quadrangle(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_quadrangle(const LLVector3 &point_a, const LLVector3 &point_b,
                             const LLVector3 &point_0, const LLVector3 &point_1, const LLVector3 &point_2,
                             LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -1151,14 +1151,14 @@ BOOL linesegment_quadrangle(const LLVector3 &point_a, const LLVector3 &point_b,
     {
         if (segment_length >= (point_a - intersection).magVec())
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL linesegment_sphere(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_sphere(const LLVector3 &point_a, const LLVector3 &point_b,
                 const LLVector3 &sphere_center, F32 sphere_radius,
                 LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -1169,14 +1169,14 @@ BOOL linesegment_sphere(const LLVector3 &point_a, const LLVector3 &point_b,
     {
         if (segment_length >= (point_a - intersection).magVec())
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL linesegment_cylinder(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_cylinder(const LLVector3 &point_a, const LLVector3 &point_b,
                   const LLVector3 &cyl_center, const LLVector3 &cyl_scale, const LLQuaternion &cyl_rotation,
                   LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -1187,10 +1187,10 @@ BOOL linesegment_cylinder(const LLVector3 &point_a, const LLVector3 &point_b,
     {
         if (segment_length >= (point_a - intersection).magVec())
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -1215,7 +1215,7 @@ U32 linesegment_box(const LLVector3 &point_a, const LLVector3 &point_b,
 }
 
 
-BOOL linesegment_prism(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_prism(const LLVector3 &point_a, const LLVector3 &point_b,
                        const LLVector3 &prism_center, const LLVector3 &prism_scale, const LLQuaternion &prism_rotation,
                        LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -1226,14 +1226,14 @@ BOOL linesegment_prism(const LLVector3 &point_a, const LLVector3 &point_b,
     {
         if (segment_length >= (point_a - intersection).magVec())
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL linesegment_tetrahedron(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_tetrahedron(const LLVector3 &point_a, const LLVector3 &point_b,
                              const LLVector3 &t_center, const LLVector3 &t_scale, const LLQuaternion &t_rotation,
                              LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -1244,14 +1244,14 @@ BOOL linesegment_tetrahedron(const LLVector3 &point_a, const LLVector3 &point_b,
     {
         if (segment_length >= (point_a - intersection).magVec())
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL linesegment_pyramid(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_pyramid(const LLVector3 &point_a, const LLVector3 &point_b,
                          const LLVector3 &p_center, const LLVector3 &p_scale, const LLQuaternion &p_rotation,
                          LLVector3 &intersection, LLVector3 &intersection_normal)
 {
@@ -1262,13 +1262,8 @@ BOOL linesegment_pyramid(const LLVector3 &point_a, const LLVector3 &point_b,
     {
         if (segment_length >= (point_a - intersection).magVec())
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
-
-
-
-
-
diff --git a/indra/llmath/raytrace.h b/indra/llmath/raytrace.h
index 01b8ee64f4..b55f29aef6 100644
--- a/indra/llmath/raytrace.h
+++ b/indra/llmath/raytrace.h
@@ -38,8 +38,8 @@ class LLQuaternion;
 // Vector arguments of the form "shape_scale" represent the scale of the
 // object along the three axes.
 //
-// All functions return the expected TRUE or FALSE, unless otherwise noted.
-// When FALSE is returned, any resulting values that might have been stored
+// All functions return the expected true or false, unless otherwise noted.
+// When false is returned, any resulting values that might have been stored
 // are undefined.
 //
 // Rays are defined by a "ray_point" and a "ray_direction" (unit).
@@ -61,25 +61,25 @@ class LLQuaternion;
 // frame.
 
 
-// returns TRUE iff line is not parallel to plane.
-BOOL line_plane(const LLVector3 &line_point, const LLVector3 &line_direction,
+// returns true if line is not parallel to plane.
+bool line_plane(const LLVector3 &line_point, const LLVector3 &line_direction,
                 const LLVector3 &plane_point, const LLVector3 plane_normal,
                 LLVector3 &intersection);
 
 
-// returns TRUE iff line is not parallel to plane.
-BOOL ray_plane(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+// returns true if line is not parallel to plane.
+bool ray_plane(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                const LLVector3 &plane_point, const LLVector3 plane_normal,
                LLVector3 &intersection);
 
 
-BOOL ray_circle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_circle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                 const LLVector3 &circle_center, const LLVector3 plane_normal, F32 circle_radius,
                 LLVector3 &intersection);
 
 // point_0 through point_2 define the plane_normal via the right-hand rule:
 // circle from point_0 to point_2 with fingers ==> thumb points in direction of normal
-BOOL ray_triangle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_triangle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                   const LLVector3 &point_0, const LLVector3 &point_1, const LLVector3 &point_2,
                   LLVector3 &intersection, LLVector3 &intersection_normal);
 
@@ -88,24 +88,24 @@ BOOL ray_triangle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
 // right-hand-rule... curl fingers from lower-left toward lower-right then toward upper-right
 // ==> thumb points in direction of normal
 // assumes a parallelogram, so point_3 is determined by the other points
-BOOL ray_quadrangle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_quadrangle(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                     const LLVector3 &point_0, const LLVector3 &point_1, const LLVector3 &point_2,
                     LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-BOOL ray_sphere(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_sphere(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                 const LLVector3 &sphere_center, F32 sphere_radius,
                 LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
 // finite right cylinder is defined by end centers: "cyl_top", "cyl_bottom",
 // and by the cylinder radius "cyl_radius"
-BOOL ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_cylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                   const LLVector3 &cyl_center, const LLVector3 &cyl_scale, const LLQuaternion &cyl_rotation,
                   LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-// this function doesn't just return a BOOL because the return is currently
+// this function doesn't just return a bool because the return is currently
 // used to decide how to break up boxes that have been hit by shots...
 // a hack that will probably be changed later
 //
@@ -117,66 +117,66 @@ U32 ray_box(const LLVector3 &ray_point, const LLVector3 &ray_direction,
 
 
 /* TODO
-BOOL ray_ellipsoid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_ellipsoid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                    const LLVector3 &e_center, const LLVector3 &e_scale, const LLQuaternion &e_rotation,
                    LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-BOOL ray_cone(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_cone(const LLVector3 &ray_point, const LLVector3 &ray_direction,
               const LLVector3 &cone_tip, const LLVector3 &cone_bottom,
               const LLVector3 &cone_scale, const LLQuaternion &cone_rotation,
               LLVector3 &intersection, LLVector3 &intersection_normal);
 */
 
 
-BOOL ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_prism(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                const LLVector3 &prism_center, const LLVector3 &prism_scale, const LLQuaternion &prism_rotation,
                LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-BOOL ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_tetrahedron(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                      const LLVector3 &t_center, const LLVector3 &t_scale, const LLQuaternion &t_rotation,
                      LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-BOOL ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_pyramid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                  const LLVector3 &p_center, const LLVector3 &p_scale, const LLQuaternion &p_rotation,
                  LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
 
 /* TODO
-BOOL ray_hemiellipsoid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_hemiellipsoid(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                        const LLVector3 &e_center, const LLVector3 &e_scale, const LLQuaternion &e_rotation,
                        const LLVector3 &e_cut_normal,
                        LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-BOOL ray_hemisphere(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_hemisphere(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                     const LLVector3 &sphere_center, F32 sphere_radius, const LLVector3 &sphere_cut_normal,
                     LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-BOOL ray_hemicylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_hemicylinder(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                       const LLVector3 &cyl_top, const LLVector3 &cyl_bottom, F32 cyl_radius,
                       const LLVector3 &cyl_cut_normal,
                       LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-BOOL ray_hemicone(const LLVector3 &ray_point, const LLVector3 &ray_direction,
+bool ray_hemicone(const LLVector3 &ray_point, const LLVector3 &ray_direction,
                   const LLVector3 &cone_tip, const LLVector3 &cone_bottom,
                   const LLVector3 &cone_scale, const LLVector3 &cyl_cut_normal,
                   LLVector3 &intersection, LLVector3 &intersection_normal);
 */
 
 
-BOOL linesegment_circle(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_circle(const LLVector3 &point_a, const LLVector3 &point_b,
                         const LLVector3 &circle_center, const LLVector3 plane_normal, F32 circle_radius,
                         LLVector3 &intersection);
 
 // point_0 through point_2 define the plane_normal via the right-hand rule:
 // circle from point_0 to point_2 with fingers ==> thumb points in direction of normal
-BOOL linesegment_triangle(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_triangle(const LLVector3 &point_a, const LLVector3 &point_b,
                           const LLVector3 &point_0, const LLVector3 &point_1, const LLVector3 &point_2,
                           LLVector3 &intersection, LLVector3 &intersection_normal);
 
@@ -185,24 +185,24 @@ BOOL linesegment_triangle(const LLVector3 &point_a, const LLVector3 &point_b,
 // right-hand-rule... curl fingers from lower-left toward lower-right then toward upper-right
 // ==> thumb points in direction of normal
 // assumes a parallelogram, so point_3 is determined by the other points
-BOOL linesegment_quadrangle(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_quadrangle(const LLVector3 &point_a, const LLVector3 &point_b,
                             const LLVector3 &point_0, const LLVector3 &point_1, const LLVector3 &point_2,
                             LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-BOOL linesegment_sphere(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_sphere(const LLVector3 &point_a, const LLVector3 &point_b,
                 const LLVector3 &sphere_center, F32 sphere_radius,
                 LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
 // finite right cylinder is defined by end centers: "cyl_top", "cyl_bottom",
 // and by the cylinder radius "cyl_radius"
-BOOL linesegment_cylinder(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_cylinder(const LLVector3 &point_a, const LLVector3 &point_b,
                           const LLVector3 &cyl_center, const LLVector3 &cyl_scale, const LLQuaternion &cyl_rotation,
                           LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-// this function doesn't just return a BOOL because the return is currently
+// this function doesn't just return a bool because the return is currently
 // used to decide how to break up boxes that have been hit by shots...
 // a hack that will probably be changed later
 //
@@ -213,20 +213,17 @@ U32 linesegment_box(const LLVector3 &point_a, const LLVector3 &point_b,
                     LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-BOOL linesegment_prism(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_prism(const LLVector3 &point_a, const LLVector3 &point_b,
                        const LLVector3 &prism_center, const LLVector3 &prism_scale, const LLQuaternion &prism_rotation,
                        LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-BOOL linesegment_tetrahedron(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_tetrahedron(const LLVector3 &point_a, const LLVector3 &point_b,
                              const LLVector3 &t_center, const LLVector3 &t_scale, const LLQuaternion &t_rotation,
                              LLVector3 &intersection, LLVector3 &intersection_normal);
 
 
-BOOL linesegment_pyramid(const LLVector3 &point_a, const LLVector3 &point_b,
+bool linesegment_pyramid(const LLVector3 &point_a, const LLVector3 &point_b,
                          const LLVector3 &p_center, const LLVector3 &p_scale, const LLQuaternion &p_rotation,
                          LLVector3 &intersection, LLVector3 &intersection_normal);
-
-
 #endif
-
diff --git a/indra/llmath/tests/llbbox_test.cpp b/indra/llmath/tests/llbbox_test.cpp
index 1f2cd96ab2..bd6bd9e4b0 100644
--- a/indra/llmath/tests/llbbox_test.cpp
+++ b/indra/llmath/tests/llbbox_test.cpp
@@ -340,11 +340,11 @@ namespace tut
         LLBBox bbox1(LLVector3(1.0f, 1.0f, 1.0f), LLQuaternion(),
                      LLVector3(1.0f, 2.0f, 3.0f), LLVector3(3.0f, 4.0f, 5.0f));
 
-        ensure("containsPointLocal(0,0,0)", bbox1.containsPointLocal(LLVector3(0.0f, 0.0f, 0.0f)) == FALSE);
-        ensure("containsPointLocal(1,2,3)", bbox1.containsPointLocal(LLVector3(1.0f, 2.0f, 3.0f)) == TRUE);
-        ensure("containsPointLocal(0.999,2,3)", bbox1.containsPointLocal(LLVector3(0.999f, 2.0f, 3.0f)) == FALSE);
-        ensure("containsPointLocal(3,4,5)", bbox1.containsPointLocal(LLVector3(3.0f, 4.0f, 5.0f)) == TRUE);
-        ensure("containsPointLocal(3,4,5.001)", bbox1.containsPointLocal(LLVector3(3.0f, 4.0f, 5.001f)) == FALSE);
+        ensure("containsPointLocal(0,0,0)", bbox1.containsPointLocal(LLVector3(0.0f, 0.0f, 0.0f)) == false);
+        ensure("containsPointLocal(1,2,3)", bbox1.containsPointLocal(LLVector3(1.0f, 2.0f, 3.0f)) == true);
+        ensure("containsPointLocal(0.999,2,3)", bbox1.containsPointLocal(LLVector3(0.999f, 2.0f, 3.0f)) == false);
+        ensure("containsPointLocal(3,4,5)", bbox1.containsPointLocal(LLVector3(3.0f, 4.0f, 5.0f)) == true);
+        ensure("containsPointLocal(3,4,5.001)", bbox1.containsPointLocal(LLVector3(3.0f, 4.0f, 5.001f)) == false);
     }
 
     template<> template<>
@@ -357,11 +357,11 @@ namespace tut
         LLBBox bbox1(LLVector3(1.0f, 1.0f, 1.0f), LLQuaternion(),
                      LLVector3(1.0f, 2.0f, 3.0f), LLVector3(3.0f, 4.0f, 5.0f));
 
-        ensure("containsPointAgent(0,0,0)", bbox1.containsPointAgent(LLVector3(0.0f, 0.0f, 0.0f)) == FALSE);
-        ensure("containsPointAgent(2,3,4)", bbox1.containsPointAgent(LLVector3(2.0f, 3.0f, 4.0f)) == TRUE);
-        ensure("containsPointAgent(2,2.999,4)", bbox1.containsPointAgent(LLVector3(2.0f, 2.999f, 4.0f)) == FALSE);
-        ensure("containsPointAgent(4,5,6)", bbox1.containsPointAgent(LLVector3(4.0f, 5.0f, 6.0f)) == TRUE);
-        ensure("containsPointAgent(4,5.001,6)", bbox1.containsPointAgent(LLVector3(4.0f, 5.001f, 6.0f)) == FALSE);
+        ensure("containsPointAgent(0,0,0)", bbox1.containsPointAgent(LLVector3(0.0f, 0.0f, 0.0f)) == false);
+        ensure("containsPointAgent(2,3,4)", bbox1.containsPointAgent(LLVector3(2.0f, 3.0f, 4.0f)) == true);
+        ensure("containsPointAgent(2,2.999,4)", bbox1.containsPointAgent(LLVector3(2.0f, 2.999f, 4.0f)) == false);
+        ensure("containsPointAgent(4,5,6)", bbox1.containsPointAgent(LLVector3(4.0f, 5.0f, 6.0f)) == true);
+        ensure("containsPointAgent(4,5.001,6)", bbox1.containsPointAgent(LLVector3(4.0f, 5.001f, 6.0f)) == false);
     }
 }
 
diff --git a/indra/llmath/tests/llrect_test.cpp b/indra/llmath/tests/llrect_test.cpp
index ca042a60d7..0fd5602d4a 100644
--- a/indra/llmath/tests/llrect_test.cpp
+++ b/indra/llmath/tests/llrect_test.cpp
@@ -471,13 +471,13 @@ namespace tut
 
         LLRectf rect(1.0f, 3.0f, 3.0f, 1.0f);
 
-        ensure("(0,0) not in rect", rect.pointInRect(0.0f, 0.0f) == FALSE);
-        ensure("(2,2) in rect", rect.pointInRect(2.0f, 2.0f) == TRUE);
-        ensure("(1,1) in rect", rect.pointInRect(1.0f, 1.0f) == TRUE);
-        ensure("(3,3) not in rect", rect.pointInRect(3.0f, 3.0f) == FALSE);
-        ensure("(2.999,2.999) in rect", rect.pointInRect(2.999f, 2.999f) == TRUE);
-        ensure("(2.999,3.0) not in rect", rect.pointInRect(2.999f, 3.0f) == FALSE);
-        ensure("(3.0,2.999) not in rect", rect.pointInRect(3.0f, 2.999f) == FALSE);
+        ensure("(0,0) not in rect", rect.pointInRect(0.0f, 0.0f) == false);
+        ensure("(2,2) in rect", rect.pointInRect(2.0f, 2.0f) == true);
+        ensure("(1,1) in rect", rect.pointInRect(1.0f, 1.0f) == true);
+        ensure("(3,3) not in rect", rect.pointInRect(3.0f, 3.0f) == false);
+        ensure("(2.999,2.999) in rect", rect.pointInRect(2.999f, 2.999f) == true);
+        ensure("(2.999,3.0) not in rect", rect.pointInRect(2.999f, 3.0f) == false);
+        ensure("(3.0,2.999) not in rect", rect.pointInRect(3.0f, 2.999f) == false);
     }
 
     template<> template<>
@@ -489,13 +489,13 @@ namespace tut
 
         LLRectf rect(1.0f, 3.0f, 3.0f, 1.0f);
 
-        ensure("(0,0) in local rect", rect.localPointInRect(0.0f, 0.0f) == TRUE);
-        ensure("(-0.0001,-0.0001) not in local rect", rect.localPointInRect(-0.0001f, -0.001f) == FALSE);
-        ensure("(1,1) in local rect", rect.localPointInRect(1.0f, 1.0f) == TRUE);
-        ensure("(2,2) not in local rect", rect.localPointInRect(2.0f, 2.0f) == FALSE);
-        ensure("(1.999,1.999) in local rect", rect.localPointInRect(1.999f, 1.999f) == TRUE);
-        ensure("(1.999,2.0) not in local rect", rect.localPointInRect(1.999f, 2.0f) == FALSE);
-        ensure("(2.0,1.999) not in local rect", rect.localPointInRect(2.0f, 1.999f) == FALSE);
+        ensure("(0,0) in local rect", rect.localPointInRect(0.0f, 0.0f) == true);
+        ensure("(-0.0001,-0.0001) not in local rect", rect.localPointInRect(-0.0001f, -0.001f) == false);
+        ensure("(1,1) in local rect", rect.localPointInRect(1.0f, 1.0f) == true);
+        ensure("(2,2) not in local rect", rect.localPointInRect(2.0f, 2.0f) == false);
+        ensure("(1.999,1.999) in local rect", rect.localPointInRect(1.999f, 1.999f) == true);
+        ensure("(1.999,2.0) not in local rect", rect.localPointInRect(1.999f, 2.0f) == false);
+        ensure("(2.0,1.999) not in local rect", rect.localPointInRect(2.0f, 1.999f) == false);
     }
 
     template<> template<>
diff --git a/indra/llmath/tests/mathmisc_test.cpp b/indra/llmath/tests/mathmisc_test.cpp
index 163cf02350..ff0899e975 100644
--- a/indra/llmath/tests/mathmisc_test.cpp
+++ b/indra/llmath/tests/mathmisc_test.cpp
@@ -454,7 +454,7 @@ namespace tut
     template<> template<>
     void line_object::test<1>()
     {
-        // this is a test for LLLine::intersects(point) which returns TRUE
+        // this is a test for LLLine::intersects(point) which returns true
         // if the line passes within some tolerance of point
 
         // these tests will have some floating point error,
diff --git a/indra/llmath/tests/v2math_test.cpp b/indra/llmath/tests/v2math_test.cpp
index f66142c6a7..860e3ef672 100644
--- a/indra/llmath/tests/v2math_test.cpp
+++ b/indra/llmath/tests/v2math_test.cpp
@@ -93,15 +93,15 @@ namespace tut
     {
         F32 x =-2.0f, y = -3.0f ;
         LLVector2 vec2(x,y);
-        ensure_equals("abs():Fail", vec2.abs(), TRUE);
+        ensure_equals("abs():Fail", vec2.abs(), true);
         ensure("abs() x", is_approx_equal(vec2.mV[VX], 2.f));
         ensure("abs() y", is_approx_equal(vec2.mV[VY], 3.f));
 
-        ensure("isNull():Fail ", FALSE == vec2.isNull());   //Returns TRUE if vector has a _very_small_ length
+        ensure("isNull():Fail ", false == vec2.isNull());   //Returns true if vector has a _very_small_ length
 
         x =.00000001f, y = .000001001f;
         vec2.setVec(x, y);
-        ensure("isNull(): Fail ", TRUE == vec2.isNull());
+        ensure("isNull(): Fail ", true == vec2.isNull());
     }
 
     template<> template<>
@@ -111,12 +111,12 @@ namespace tut
         LLVector2 vec2(x, y), vec3;
         vec3 = vec3.scaleVec(vec2);
         ensure("scaleVec: Fail ", vec3.mV[VX] == 0. && vec3.mV[VY] == 0.);
-        ensure("isExactlyZero(): Fail", TRUE == vec3.isExactlyZero());
+        ensure("isExactlyZero(): Fail", true == vec3.isExactlyZero());
 
         vec3.setVec(2.f, 1.f);
         vec3 = vec3.scaleVec(vec2);
         ensure("scaleVec: Fail ", (2.f == vec3.mV[VX]) && (2.f == vec3.mV[VY]));
-        ensure("isExactlyZero():Fail", FALSE == vec3.isExactlyZero());
+        ensure("isExactlyZero():Fail", false == vec3.isExactlyZero());
     }
 
     template<> template<>
@@ -254,7 +254,7 @@ namespace tut
         vec3.clearVec();
         vec2.setVec(x1, y1);
         vec3.setVec(vec2);
-        ensure("2:operator!= failed", (FALSE == (vec2 != vec3)));
+        ensure("2:operator!= failed", (false == (vec2 != vec3)));
     }
     template<> template<>
     void v2math_object::test<13>()
@@ -373,7 +373,7 @@ namespace tut
         x1 = 1.0f, y1 = 2.0f, x2 = 1.0f, y2 = 3.2234f;
         vec2.setVec(x1, y1);
         vec3.setVec(x2, y2);
-        ensure("2:operator < failed", (FALSE == (vec3 < vec2)));
+        ensure("2:operator < failed", (false == (vec3 < vec2)));
     }
 
     template<> template<>
diff --git a/indra/llmath/tests/v3color_test.cpp b/indra/llmath/tests/v3color_test.cpp
index d1baa53a9b..8897d48365 100644
--- a/indra/llmath/tests/v3color_test.cpp
+++ b/indra/llmath/tests/v3color_test.cpp
@@ -209,7 +209,7 @@ namespace tut
         ensure("1:operator!= failed",(llcolor3 != llcolor3a));
         llcolor3.setToBlack();
         llcolor3a.setVec(llcolor3);
-        ensure("2:operator!= failed", ( FALSE == (llcolor3a != llcolor3)));
+        ensure("2:operator!= failed", ( false == (llcolor3a != llcolor3)));
     }
 
     template<> template<>
diff --git a/indra/llmath/tests/v3dmath_test.cpp b/indra/llmath/tests/v3dmath_test.cpp
index 6b58cbd007..db08419012 100644
--- a/indra/llmath/tests/v3dmath_test.cpp
+++ b/indra/llmath/tests/v3dmath_test.cpp
@@ -128,15 +128,15 @@ namespace tut
         LLVector3d vec3D(x,y,z);
         vec3D.abs();
         ensure("1:abs:Fail  ", ((-x == vec3D.mdV[VX]) && (y == vec3D.mdV[VY]) && (-z == vec3D.mdV[VZ])));
-        ensure("2:isNull():Fail ", (FALSE == vec3D.isNull()));
+        ensure("2:isNull():Fail ", (false == vec3D.isNull()));
         vec3D.clearVec();
         x =.00000001, y = .000001001, z = .000001001;
         vec3D.setVec(x,y,z);
-        ensure("3:isNull():Fail ", (TRUE == vec3D.isNull()));
-        ensure("4:isExactlyZero():Fail ", (FALSE == vec3D.isExactlyZero()));
+        ensure("3:isNull():Fail ", (true == vec3D.isNull()));
+        ensure("4:isExactlyZero():Fail ", (false == vec3D.isExactlyZero()));
         x =.0000000, y = .00000000, z = .00000000;
         vec3D.setVec(x,y,z);
-        ensure("5:isExactlyZero():Fail ", (TRUE == vec3D.isExactlyZero()));
+        ensure("5:isExactlyZero():Fail ", (true == vec3D.isExactlyZero()));
     }
 
     template<> template<>
@@ -353,7 +353,7 @@ namespace tut
     {
         F64 x1 = 1., y1 = 2., z1 = -1.1;
         LLVector3d vec3D(x1,y1,z1), vec3Da;
-        ensure("1:operator!= failed",(TRUE == (vec3D !=vec3Da)));
+        ensure("1:operator!= failed",(true == (vec3D !=vec3Da)));
         vec3Da = vec3D;
         ensure("2:operator== failed",(vec3D ==vec3Da));
         vec3D.clearVec();
@@ -362,7 +362,7 @@ namespace tut
         vec3D.setVec(x1,y1,z1);
         vec3Da.setVec(x1,y1,z1);
         ensure("3:operator== failed",(vec3D ==vec3Da));
-        ensure("4:operator!= failed",(FALSE == (vec3D !=vec3Da)));
+        ensure("4:operator!= failed",(false == (vec3D !=vec3Da)));
     }
 
     template<> template<>
@@ -482,10 +482,10 @@ namespace tut
         F64 x = 2.32, y = 1.212, z = -.12;
         F64 min = 0.0001, max = 3.0;
         LLVector3d vec3d(x,y,z);
-        ensure("1:clamp:Fail ", (TRUE == (vec3d.clamp(min, max))));
+        ensure("1:clamp:Fail ", (true == (vec3d.clamp(min, max))));
         x = 0.000001f, z = 5.3f;
         vec3d.setVec(x,y,z);
-        ensure("2:clamp:Fail ", (TRUE == (vec3d.clamp(min, max))));
+        ensure("2:clamp:Fail ", (true == (vec3d.clamp(min, max))));
     }
 
     template<> template<>
@@ -494,11 +494,11 @@ namespace tut
         F64 x = 10., y = 20., z = -15.;
         F64 epsilon = .23425;
         LLVector3d vec3Da(x,y,z), vec3Db(x,y,z);
-        ensure("1:are_parallel: Fail ", (TRUE == are_parallel(vec3Da,vec3Db,epsilon)));
+        ensure("1:are_parallel: Fail ", (true == are_parallel(vec3Da,vec3Db,epsilon)));
         F64 x1 = -12., y1 = -20., z1 = -100.;
         vec3Db.clearVec();
         vec3Db.setVec(x1,y1,z1);
-        ensure("2:are_parallel: Fail ", (FALSE == are_parallel(vec3Da,vec3Db,epsilon)));
+        ensure("2:are_parallel: Fail ", (false == are_parallel(vec3Da,vec3Db,epsilon)));
     }
 
     template<> template<>
diff --git a/indra/llmath/tests/v3math_test.cpp b/indra/llmath/tests/v3math_test.cpp
index 7f93aba354..6d95a9e5b7 100644
--- a/indra/llmath/tests/v3math_test.cpp
+++ b/indra/llmath/tests/v3math_test.cpp
@@ -99,7 +99,7 @@ namespace tut
     {
         F32 x = 2.32f, y = 1.212f, z = -.12f;
         LLVector3 vec3(x,y,z);
-        ensure("1:isFinite= Fail to initialize ", (TRUE == vec3.isFinite()));//need more test cases:
+        ensure("1:isFinite= Fail to initialize ", (true == vec3.isFinite()));//need more test cases:
         vec3.clearVec();
         ensure("2:clearVec:Fail to set values ", ((0.f == vec3.mV[VX]) && (0.f == vec3.mV[VY]) && (0.f == vec3.mV[VZ])));
         vec3.setVec(x,y,z);
@@ -137,10 +137,10 @@ namespace tut
         F32 x = 2.32f, y = 3.212f, z = -.12f;
         F32 min = 0.0001f, max = 3.0f;
         LLVector3 vec3(x,y,z);
-        ensure("1:clamp:Fail  ", TRUE == vec3.clamp(min, max) && x == vec3.mV[VX] && max == vec3.mV[VY] && min == vec3.mV[VZ]);
+        ensure("1:clamp:Fail  ", true == vec3.clamp(min, max) && x == vec3.mV[VX] && max == vec3.mV[VY] && min == vec3.mV[VZ]);
         x = 1.f, y = 2.2f, z = 2.8f;
         vec3.setVec(x,y,z);
-        ensure("2:clamp:Fail  ", FALSE == vec3.clamp(min, max));
+        ensure("2:clamp:Fail  ", false == vec3.clamp(min, max));
     }
 
     template<> template<>
@@ -157,11 +157,11 @@ namespace tut
     {
         F32 x =-2.0f, y = -3.0f, z = 1.23f ;
         LLVector3 vec3(x,y,z);
-        ensure("1:abs():Fail ", (TRUE == vec3.abs()));
-        ensure("2:isNull():Fail", (FALSE == vec3.isNull()));    //Returns TRUE if vector has a _very_small_ length
+        ensure("1:abs():Fail ", (true == vec3.abs()));
+        ensure("2:isNull():Fail", (false == vec3.isNull()));    //Returns true if vector has a _very_small_ length
         x =.00000001f, y = .000001001f, z = .000001001f;
         vec3.setVec(x,y,z);
-        ensure("3:isNull(): Fail ", (TRUE == vec3.isNull()));
+        ensure("3:isNull(): Fail ", (true == vec3.isNull()));
     }
 
     template<> template<>
@@ -169,13 +169,13 @@ namespace tut
     {
         F32 x =-2.0f, y = -3.0f, z = 1.f ;
         LLVector3 vec3(x,y,z),vec3a;
-        ensure("1:isExactlyZero():Fail ", (TRUE == vec3a.isExactlyZero()));
+        ensure("1:isExactlyZero():Fail ", (true == vec3a.isExactlyZero()));
         vec3a = vec3a.scaleVec(vec3);
         ensure("2:scaleVec: Fail ", vec3a.mV[VX] == 0.f && vec3a.mV[VY] == 0.f && vec3a.mV[VZ] == 0.f);
         vec3a.setVec(x,y,z);
         vec3a = vec3a.scaleVec(vec3);
         ensure("3:scaleVec: Fail ", ((4 == vec3a.mV[VX]) && (9 == vec3a.mV[VY]) &&(1 == vec3a.mV[VZ])));
-        ensure("4:isExactlyZero():Fail ", (FALSE == vec3.isExactlyZero()));
+        ensure("4:isExactlyZero():Fail ", (false == vec3.isExactlyZero()));
     }
 
     template<> template<>
@@ -356,7 +356,7 @@ namespace tut
         vec3.clearVec();
         vec3.clearVec();
         vec3a.setVec(vec3);
-        ensure("2:operator!= failed", ( FALSE == (vec3a != vec3)));
+        ensure("2:operator!= failed", ( false == (vec3a != vec3)));
     }
 
     template<> template<>
@@ -454,15 +454,15 @@ namespace tut
     {
         F32 x1 =-2.3f, y1 = 2.f,z1 = 1.2f, x2 = 1.3f, y2 = 1.11f, z2 = 1234.234f;
         LLVector3 vec3(x1,y1,z1), vec3a(x2,y2,z2);
-        ensure("1:operator< failed", (TRUE == (vec3 < vec3a)));
+        ensure("1:operator< failed", (true == (vec3 < vec3a)));
         x1 =-2.3f, y1 = 2.f,z1 = 1.2f, x2 = 1.3f, y2 = 2.f, z2 = 1234.234f;
         vec3.setVec(x1,y1,z1);
         vec3a.setVec(x2,y2,z2);
-        ensure("2:operator< failed ", (TRUE == (vec3 < vec3a)));
+        ensure("2:operator< failed ", (true == (vec3 < vec3a)));
         x1 =2.3f, y1 = 2.f,z1 = 1.2f, x2 = 1.3f,
         vec3.setVec(x1,y1,z1);
         vec3a.setVec(x2,y2,z2);
-        ensure("3:operator< failed ", (FALSE == (vec3 < vec3a)));
+        ensure("3:operator< failed ", (false == (vec3 < vec3a)));
     }
 
     template<> template<>
diff --git a/indra/llmath/tests/v4color_test.cpp b/indra/llmath/tests/v4color_test.cpp
index 3b3adbda0d..e5d914a065 100644
--- a/indra/llmath/tests/v4color_test.cpp
+++ b/indra/llmath/tests/v4color_test.cpp
@@ -49,23 +49,23 @@ namespace tut
     void v4color_object::test<1>()
     {
         LLColor4 llcolor4;
-        ensure("1:LLColor4:Fail to initialize ", ((0 == llcolor4.mV[VX]) && (0 == llcolor4.mV[VY]) && (0 == llcolor4.mV[VZ])&& (1.0f == llcolor4.mV[VW])));
+        ensure("1:LLColor4:Fail to initialize ", ((0 == llcolor4.mV[VRED]) && (0 == llcolor4.mV[VGREEN]) && (0 == llcolor4.mV[VBLUE])&& (1.0f == llcolor4.mV[VALPHA])));
 
         F32 r = 0x20, g = 0xFFFF, b = 0xFF, a = 0xAF;
         LLColor4 llcolor4a(r,g,b);
-        ensure("2:LLColor4:Fail to initialize ", ((r == llcolor4a.mV[VX]) && (g == llcolor4a.mV[VY]) && (b == llcolor4a.mV[VZ])&& (1.0f == llcolor4a.mV[VW])));
+        ensure("2:LLColor4:Fail to initialize ", ((r == llcolor4a.mV[VRED]) && (g == llcolor4a.mV[VGREEN]) && (b == llcolor4a.mV[VBLUE])&& (1.0f == llcolor4a.mV[VALPHA])));
 
         LLColor4 llcolor4b(r,g,b,a);
-        ensure("3:LLColor4:Fail to initialize ", ((r == llcolor4b.mV[VX]) && (g == llcolor4b.mV[VY]) && (b == llcolor4b.mV[VZ])&& (a == llcolor4b.mV[VW])));
+        ensure("3:LLColor4:Fail to initialize ", ((r == llcolor4b.mV[VRED]) && (g == llcolor4b.mV[VGREEN]) && (b == llcolor4b.mV[VBLUE])&& (a == llcolor4b.mV[VALPHA])));
 
         const F32 vec[4] = {.112f ,23.2f, -4.2f, -.0001f};
         LLColor4 llcolor4c(vec);
-        ensure("4:LLColor4:Fail to initialize ", ((vec[0] == llcolor4c.mV[VX]) && (vec[1] == llcolor4c.mV[VY]) && (vec[2] == llcolor4c.mV[VZ])&& (vec[3] == llcolor4c.mV[VW])));
+        ensure("4:LLColor4:Fail to initialize ", ((vec[0] == llcolor4c.mV[VRED]) && (vec[1] == llcolor4c.mV[VGREEN]) && (vec[2] == llcolor4c.mV[VBLUE])&& (vec[3] == llcolor4c.mV[VALPHA])));
 
         LLColor3 llcolor3(-2.23f,1.01f,42.3f);
         F32 val = -.1f;
         LLColor4 llcolor4d(llcolor3,val);
-        ensure("5:LLColor4:Fail to initialize ", ((llcolor3.mV[VX] == llcolor4d.mV[VX]) && (llcolor3.mV[VY] == llcolor4d.mV[VY]) && (llcolor3.mV[VZ] == llcolor4d.mV[VZ])&& (val == llcolor4d.mV[VW])));
+        ensure("5:LLColor4:Fail to initialize ", ((llcolor3.mV[VRED] == llcolor4d.mV[VRED]) && (llcolor3.mV[VGREEN] == llcolor4d.mV[VGREEN]) && (llcolor3.mV[VBLUE] == llcolor4d.mV[VBLUE])&& (val == llcolor4d.mV[VALPHA])));
 
         LLSD sd = llcolor4d.getValue();
         LLColor4 llcolor4e(sd);
@@ -76,7 +76,7 @@ namespace tut
         LLColor4 llcolor4g(color4u);
         const F32 SCALE = 1.f/255.f;
         F32 r2 = r1*SCALE, g2 = g1* SCALE, b2 = b1* SCALE;
-        ensure("7:LLColor4:Fail to initialize ", ((r2 == llcolor4g.mV[VX]) && (g2 == llcolor4g.mV[VY]) && (b2 == llcolor4g.mV[VZ])));
+        ensure("7:LLColor4:Fail to initialize ", ((r2 == llcolor4g.mV[VRED]) && (g2 == llcolor4g.mV[VGREEN]) && (b2 == llcolor4g.mV[VBLUE])));
     }
 
     template<> template<>
@@ -98,10 +98,10 @@ namespace tut
         F32 r = 0x20, g = 0xFFFF, b = 0xFF,a = 0xAF;
         LLColor4 llcolor4(r,g,b,a);
         llcolor4.setToBlack();
-        ensure("setToBlack:Fail to set the black ", ((0 == llcolor4.mV[VX]) && (0 == llcolor4.mV[VY]) && (0 == llcolor4.mV[VZ])&& (1.0f == llcolor4.mV[VW])));
+        ensure("setToBlack:Fail to set the black ", ((0 == llcolor4.mV[VRED]) && (0 == llcolor4.mV[VGREEN]) && (0 == llcolor4.mV[VBLUE])&& (1.0f == llcolor4.mV[VALPHA])));
 
         llcolor4.setToWhite();
-        ensure("setToWhite:Fail to set the white ", ((1.f == llcolor4.mV[VX]) && (1.f == llcolor4.mV[VY]) && (1.f == llcolor4.mV[VZ])&& (1.0f == llcolor4.mV[VW])));
+        ensure("setToWhite:Fail to set the white ", ((1.f == llcolor4.mV[VRED]) && (1.f == llcolor4.mV[VGREEN]) && (1.f == llcolor4.mV[VBLUE])&& (1.0f == llcolor4.mV[VALPHA])));
     }
 
     template<> template<>
@@ -110,10 +110,10 @@ namespace tut
         F32 r = 0x20, g = 0xFFFF, b = 0xFF, a = 0xAF;
         LLColor4 llcolor4;
         llcolor4.setVec(r,g,b);
-        ensure("1:setVec:Fail to set the values ", ((r == llcolor4.mV[VX]) && (g == llcolor4.mV[VY]) && (b == llcolor4.mV[VZ])&& (1.f == llcolor4.mV[VW])));
+        ensure("1:setVec:Fail to set the values ", ((r == llcolor4.mV[VRED]) && (g == llcolor4.mV[VGREEN]) && (b == llcolor4.mV[VBLUE])&& (1.f == llcolor4.mV[VALPHA])));
 
         llcolor4.setVec(r,g,b,a);
-        ensure("2:setVec:Fail to set the values ", ((r == llcolor4.mV[VX]) && (g == llcolor4.mV[VY]) && (b == llcolor4.mV[VZ])&& (a == llcolor4.mV[VW])));
+        ensure("2:setVec:Fail to set the values ", ((r == llcolor4.mV[VRED]) && (g == llcolor4.mV[VGREEN]) && (b == llcolor4.mV[VBLUE])&& (a == llcolor4.mV[VALPHA])));
 
         LLColor4 llcolor4a;
         llcolor4a.setVec(llcolor4);
@@ -121,23 +121,23 @@ namespace tut
 
         LLColor3 llcolor3(-2.23f,1.01f,42.3f);
         llcolor4a.setVec(llcolor3);
-        ensure("4:setVec:Fail to set the values ", ((llcolor3.mV[VX] == llcolor4a.mV[VX]) && (llcolor3.mV[VY] == llcolor4a.mV[VY]) && (llcolor3.mV[VZ] == llcolor4a.mV[VZ])));
+        ensure("4:setVec:Fail to set the values ", ((llcolor3.mV[VRED] == llcolor4a.mV[VRED]) && (llcolor3.mV[VGREEN] == llcolor4a.mV[VGREEN]) && (llcolor3.mV[VBLUE] == llcolor4a.mV[VBLUE])));
 
         F32 val = -.33f;
         llcolor4a.setVec(llcolor3,val);
-        ensure("4:setVec:Fail to set the values ", ((llcolor3.mV[VX] == llcolor4a.mV[VX]) && (llcolor3.mV[VY] == llcolor4a.mV[VY]) && (llcolor3.mV[VZ] == llcolor4a.mV[VZ]) && (val == llcolor4a.mV[VW])));
+        ensure("4:setVec:Fail to set the values ", ((llcolor3.mV[VRED] == llcolor4a.mV[VRED]) && (llcolor3.mV[VGREEN] == llcolor4a.mV[VGREEN]) && (llcolor3.mV[VBLUE] == llcolor4a.mV[VBLUE]) && (val == llcolor4a.mV[VALPHA])));
 
         const F32 vec[4] = {.112f ,23.2f, -4.2f, -.0001f};
         LLColor4 llcolor4c;
         llcolor4c.setVec(vec);
-        ensure("5:setVec:Fail to initialize ", ((vec[0] == llcolor4c.mV[VX]) && (vec[1] == llcolor4c.mV[VY]) && (vec[2] == llcolor4c.mV[VZ])&& (vec[3] == llcolor4c.mV[VW])));
+        ensure("5:setVec:Fail to initialize ", ((vec[0] == llcolor4c.mV[VRED]) && (vec[1] == llcolor4c.mV[VGREEN]) && (vec[2] == llcolor4c.mV[VBLUE])&& (vec[3] == llcolor4c.mV[VALPHA])));
 
         U8 r1 = 0xF2, g1 = 0xFA, b1= 0xBF;
         LLColor4U color4u(r1,g1,b1);
         llcolor4.setVec(color4u);
         const F32 SCALE = 1.f/255.f;
         F32 r2 = r1*SCALE, g2 = g1* SCALE, b2 = b1* SCALE;
-        ensure("6:setVec:Fail to initialize ", ((r2 == llcolor4.mV[VX]) && (g2 == llcolor4.mV[VY]) && (b2 == llcolor4.mV[VZ])));
+        ensure("6:setVec:Fail to initialize ", ((r2 == llcolor4.mV[VRED]) && (g2 == llcolor4.mV[VGREEN]) && (b2 == llcolor4.mV[VBLUE])));
     }
 
     template<> template<>
@@ -146,7 +146,7 @@ namespace tut
         F32 alpha = 0xAF;
         LLColor4 llcolor4;
         llcolor4.setAlpha(alpha);
-        ensure("setAlpha:Fail to initialize ", (alpha == llcolor4.mV[VW]));
+        ensure("setAlpha:Fail to initialize ", (alpha == llcolor4.mV[VALPHA]));
     }
 
     template<> template<>
@@ -209,7 +209,7 @@ namespace tut
         LLColor3 llcolor3(r,g,b);
         LLColor4 llcolor4a,llcolor4b;
         llcolor4a = llcolor3;
-        ensure("Operator=:Fail to initialize ", ((llcolor3.mV[0] == llcolor4a.mV[VX]) && (llcolor3.mV[1] == llcolor4a.mV[VY]) && (llcolor3.mV[2] == llcolor4a.mV[VZ])));
+        ensure("Operator=:Fail to initialize ", ((llcolor3.mV[0] == llcolor4a.mV[VRED]) && (llcolor3.mV[1] == llcolor4a.mV[VGREEN]) && (llcolor3.mV[2] == llcolor4a.mV[VBLUE])));
         LLSD sd = llcolor4a.getValue();
         llcolor4b = LLColor4(sd);
         ensure_equals("Operator= LLSD:Fail ", llcolor4a, llcolor4b);
@@ -234,10 +234,10 @@ namespace tut
         F32 r2 = 0xABF, g2 = 0xFB, b2 = 0xFFF;
         LLColor4 llcolor4a(r1,g1,b1),llcolor4b(r2,g2,b2),llcolor4c;
         llcolor4c = llcolor4b + llcolor4a;
-        ensure("operator+:Fail to Add the values ",  (is_approx_equal(r1+r2,llcolor4c.mV[VX]) && is_approx_equal(g1+g2,llcolor4c.mV[VY]) && is_approx_equal(b1+b2,llcolor4c.mV[VZ])));
+        ensure("operator+:Fail to Add the values ",  (is_approx_equal(r1+r2,llcolor4c.mV[VRED]) && is_approx_equal(g1+g2,llcolor4c.mV[VGREEN]) && is_approx_equal(b1+b2,llcolor4c.mV[VBLUE])));
 
         llcolor4b += llcolor4a;
-        ensure("operator+=:Fail to Add the values ",  (is_approx_equal(r1+r2,llcolor4b.mV[VX]) && is_approx_equal(g1+g2,llcolor4b.mV[VY]) && is_approx_equal(b1+b2,llcolor4b.mV[VZ])));
+        ensure("operator+=:Fail to Add the values ",  (is_approx_equal(r1+r2,llcolor4b.mV[VRED]) && is_approx_equal(g1+g2,llcolor4b.mV[VGREEN]) && is_approx_equal(b1+b2,llcolor4b.mV[VBLUE])));
     }
 
     template<> template<>
@@ -247,10 +247,10 @@ namespace tut
         F32 r2 = 0xABF, g2 = 0xFB, b2 = 0xFFF;
         LLColor4 llcolor4a(r1,g1,b1),llcolor4b(r2,g2,b2),llcolor4c;
         llcolor4c = llcolor4a - llcolor4b;
-        ensure("operator-:Fail to subtract the values ",  (is_approx_equal(r1-r2,llcolor4c.mV[VX]) && is_approx_equal(g1-g2,llcolor4c.mV[VY]) && is_approx_equal(b1-b2,llcolor4c.mV[VZ])));
+        ensure("operator-:Fail to subtract the values ",  (is_approx_equal(r1-r2,llcolor4c.mV[VRED]) && is_approx_equal(g1-g2,llcolor4c.mV[VGREEN]) && is_approx_equal(b1-b2,llcolor4c.mV[VBLUE])));
 
         llcolor4a -= llcolor4b;
-        ensure("operator-=:Fail to subtract the values ",  (is_approx_equal(r1-r2,llcolor4a.mV[VX]) && is_approx_equal(g1-g2,llcolor4a.mV[VY]) && is_approx_equal(b1-b2,llcolor4a.mV[VZ])));
+        ensure("operator-=:Fail to subtract the values ",  (is_approx_equal(r1-r2,llcolor4a.mV[VRED]) && is_approx_equal(g1-g2,llcolor4a.mV[VGREEN]) && is_approx_equal(b1-b2,llcolor4a.mV[VBLUE])));
     }
 
     template<> template<>
@@ -260,20 +260,20 @@ namespace tut
         F32 r2 = 0xABF, g2 = 0xFB, b2 = 0xFFF;
         LLColor4 llcolor4a(r1,g1,b1),llcolor4b(r2,g2,b2),llcolor4c;
         llcolor4c = llcolor4a * llcolor4b;
-        ensure("1:operator*:Fail to multiply the values",  (is_approx_equal(r1*r2,llcolor4c.mV[VX]) && is_approx_equal(g1*g2,llcolor4c.mV[VY]) && is_approx_equal(b1*b2,llcolor4c.mV[VZ])));
+        ensure("1:operator*:Fail to multiply the values",  (is_approx_equal(r1*r2,llcolor4c.mV[VRED]) && is_approx_equal(g1*g2,llcolor4c.mV[VGREEN]) && is_approx_equal(b1*b2,llcolor4c.mV[VBLUE])));
 
         F32 mulVal = 3.33f;
         llcolor4c = llcolor4a * mulVal;
-        ensure("2:operator*:Fail ",  (is_approx_equal(r1*mulVal,llcolor4c.mV[VX]) && is_approx_equal(g1*mulVal,llcolor4c.mV[VY]) && is_approx_equal(b1*mulVal,llcolor4c.mV[VZ])));
+        ensure("2:operator*:Fail ",  (is_approx_equal(r1*mulVal,llcolor4c.mV[VRED]) && is_approx_equal(g1*mulVal,llcolor4c.mV[VGREEN]) && is_approx_equal(b1*mulVal,llcolor4c.mV[VBLUE])));
         llcolor4c = mulVal * llcolor4a;
-        ensure("3:operator*:Fail to multiply the values",  (is_approx_equal(r1*mulVal,llcolor4c.mV[VX]) && is_approx_equal(g1*mulVal,llcolor4c.mV[VY]) && is_approx_equal(b1*mulVal,llcolor4c.mV[VZ])));
+        ensure("3:operator*:Fail to multiply the values",  (is_approx_equal(r1*mulVal,llcolor4c.mV[VRED]) && is_approx_equal(g1*mulVal,llcolor4c.mV[VGREEN]) && is_approx_equal(b1*mulVal,llcolor4c.mV[VBLUE])));
 
         llcolor4a *= mulVal;
-        ensure("4:operator*=:Fail to multiply the values ",  (is_approx_equal(r1*mulVal,llcolor4a.mV[VX]) && is_approx_equal(g1*mulVal,llcolor4a.mV[VY]) && is_approx_equal(b1*mulVal,llcolor4a.mV[VZ])));
+        ensure("4:operator*=:Fail to multiply the values ",  (is_approx_equal(r1*mulVal,llcolor4a.mV[VRED]) && is_approx_equal(g1*mulVal,llcolor4a.mV[VGREEN]) && is_approx_equal(b1*mulVal,llcolor4a.mV[VBLUE])));
 
         LLColor4 llcolor4d(r1,g1,b1),llcolor4e(r2,g2,b2);
         llcolor4e *= llcolor4d;
-        ensure("5:operator*=:Fail to multiply the values ",  (is_approx_equal(r1*r2,llcolor4e.mV[VX]) && is_approx_equal(g1*g2,llcolor4e.mV[VY]) && is_approx_equal(b1*b2,llcolor4e.mV[VZ])));
+        ensure("5:operator*=:Fail to multiply the values ",  (is_approx_equal(r1*r2,llcolor4e.mV[VRED]) && is_approx_equal(g1*g2,llcolor4e.mV[VGREEN]) && is_approx_equal(b1*b2,llcolor4e.mV[VBLUE])));
     }
 
     template<> template<>
@@ -283,13 +283,13 @@ namespace tut
         F32 div = 12.345f;
         LLColor4 llcolor4a(r,g,b,a),llcolor4b;
         llcolor4b = llcolor4a % div;//chnage only alpha value nor r,g,b;
-        ensure("1operator%:Fail ",  (is_approx_equal(r,llcolor4b.mV[VX]) && is_approx_equal(g,llcolor4b.mV[VY]) && is_approx_equal(b,llcolor4b.mV[VZ])&& is_approx_equal(div*a,llcolor4b.mV[VW])));
+        ensure("1operator%:Fail ",  (is_approx_equal(r,llcolor4b.mV[VRED]) && is_approx_equal(g,llcolor4b.mV[VGREEN]) && is_approx_equal(b,llcolor4b.mV[VBLUE])&& is_approx_equal(div*a,llcolor4b.mV[VALPHA])));
 
         llcolor4b = div % llcolor4a;
-        ensure("2operator%:Fail ",  (is_approx_equal(r,llcolor4b.mV[VX]) && is_approx_equal(g,llcolor4b.mV[VY]) && is_approx_equal(b,llcolor4b.mV[VZ])&& is_approx_equal(div*a,llcolor4b.mV[VW])));
+        ensure("2operator%:Fail ",  (is_approx_equal(r,llcolor4b.mV[VRED]) && is_approx_equal(g,llcolor4b.mV[VGREEN]) && is_approx_equal(b,llcolor4b.mV[VBLUE])&& is_approx_equal(div*a,llcolor4b.mV[VALPHA])));
 
         llcolor4a %= div;
-        ensure("operator%=:Fail ",  (is_approx_equal(a*div,llcolor4a.mV[VW])));
+        ensure("operator%=:Fail ",  (is_approx_equal(a*div,llcolor4a.mV[VALPHA])));
     }
 
     template<> template<>
@@ -312,7 +312,7 @@ namespace tut
         F32 r = 0x20, g = 0xFFFF, b = 0xFF;
         LLColor4 llcolor4a(r,g,b),llcolor4b;
         LLColor3 llcolor3 = vec4to3(llcolor4a);
-        ensure("vec4to3:Fail to convert vec4 to vec3 ",  (is_approx_equal(llcolor3.mV[VX],llcolor4a.mV[VX]) && is_approx_equal(llcolor3.mV[VY],llcolor4a.mV[VY]) && is_approx_equal(llcolor3.mV[VZ],llcolor4a.mV[VZ])));
+        ensure("vec4to3:Fail to convert vec4 to vec3 ",  (is_approx_equal(llcolor3.mV[VRED],llcolor4a.mV[VRED]) && is_approx_equal(llcolor3.mV[VGREEN],llcolor4a.mV[VGREEN]) && is_approx_equal(llcolor3.mV[VBLUE],llcolor4a.mV[VBLUE])));
         llcolor4b = vec3to4(llcolor3);
         ensure_equals("vec3to4:Fail to convert vec3 to vec4 ",  llcolor4b, llcolor4a);
     }
@@ -324,7 +324,7 @@ namespace tut
         F32 r2 = 0xABF, g2 = 0xFB, b2 = 0xFFF;
         LLColor4 llcolor4a(r1,g1,b1),llcolor4b(r2,g2,b2),llcolor4c;
         llcolor4c = lerp(llcolor4a,llcolor4b,val);
-        ensure("lerp:Fail ",  (is_approx_equal(r1 + (r2 - r1)* val,llcolor4c.mV[VX]) && is_approx_equal(g1 + (g2 - g1)* val,llcolor4c.mV[VY]) && is_approx_equal(b1 + (b2 - b1)* val,llcolor4c.mV[VZ])));
+        ensure("lerp:Fail ",  (is_approx_equal(r1 + (r2 - r1)* val,llcolor4c.mV[VRED]) && is_approx_equal(g1 + (g2 - g1)* val,llcolor4c.mV[VGREEN]) && is_approx_equal(b1 + (b2 - b1)* val,llcolor4c.mV[VBLUE])));
     }
 
     template<> template<>
diff --git a/indra/llmath/tests/v4coloru_test.cpp b/indra/llmath/tests/v4coloru_test.cpp
index 2b6ee952a3..9d707d18c5 100644
--- a/indra/llmath/tests/v4coloru_test.cpp
+++ b/indra/llmath/tests/v4coloru_test.cpp
@@ -48,18 +48,18 @@ namespace tut
     void v4coloru_object::test<1>()
     {
         LLColor4U llcolor4u;
-        ensure("1:LLColor4u:Fail to initialize ", ((0 == llcolor4u.mV[VX]) && (0 == llcolor4u.mV[VY]) && (0 == llcolor4u.mV[VZ])&& (255 == llcolor4u.mV[VW])));
+        ensure("1:LLColor4u:Fail to initialize ", ((0 == llcolor4u.mV[VRED]) && (0 == llcolor4u.mV[VGREEN]) && (0 == llcolor4u.mV[VBLUE])&& (255 == llcolor4u.mV[VALPHA])));
 
         U8 r = 0x12, g = 0xFF, b = 0xAF, a = 0x23;
         LLColor4U llcolor4u1(r,g,b);
-        ensure("2:LLColor4u:Fail to initialize ", ((r == llcolor4u1.mV[VX]) && (g == llcolor4u1.mV[VY]) && (b == llcolor4u1.mV[VZ])&& (255 == llcolor4u1.mV[VW])));
+        ensure("2:LLColor4u:Fail to initialize ", ((r == llcolor4u1.mV[VRED]) && (g == llcolor4u1.mV[VGREEN]) && (b == llcolor4u1.mV[VBLUE])&& (255 == llcolor4u1.mV[VALPHA])));
 
         LLColor4U llcolor4u2(r,g,b,a);
-        ensure("3:LLColor4u:Fail to initialize ", ((r == llcolor4u2.mV[VX]) && (g == llcolor4u2.mV[VY]) && (b == llcolor4u2.mV[VZ])&& (a == llcolor4u2.mV[VW])));
+        ensure("3:LLColor4u:Fail to initialize ", ((r == llcolor4u2.mV[VRED]) && (g == llcolor4u2.mV[VGREEN]) && (b == llcolor4u2.mV[VBLUE])&& (a == llcolor4u2.mV[VALPHA])));
 
         const U8 vec[4] = {0x12,0xFF,0xAF,0x23};
         LLColor4U llcolor4u3(vec);
-        ensure("4:LLColor4u:Fail to initialize ", ((vec[0] == llcolor4u3.mV[VX]) && (vec[1] == llcolor4u3.mV[VY]) && (vec[2] == llcolor4u3.mV[VZ])&& (vec[3] == llcolor4u3.mV[VW])));
+        ensure("4:LLColor4u:Fail to initialize ", ((vec[0] == llcolor4u3.mV[VRED]) && (vec[1] == llcolor4u3.mV[VGREEN]) && (vec[2] == llcolor4u3.mV[VBLUE])&& (vec[3] == llcolor4u3.mV[VALPHA])));
 
         LLSD sd = llcolor4u3.getValue();
         LLColor4U llcolor4u4(sd);
@@ -82,10 +82,10 @@ namespace tut
         U8 r = 0x12, g = 0xFF, b = 0xAF, a = 0x23;
         LLColor4U llcolor4u(r,g,b,a);
         llcolor4u.setToBlack();
-        ensure("setToBlack:Fail to set black ", ((0 == llcolor4u.mV[VX]) && (0 == llcolor4u.mV[VY]) && (0 == llcolor4u.mV[VZ])&& (255 == llcolor4u.mV[VW])));
+        ensure("setToBlack:Fail to set black ", ((0 == llcolor4u.mV[VRED]) && (0 == llcolor4u.mV[VGREEN]) && (0 == llcolor4u.mV[VBLUE])&& (255 == llcolor4u.mV[VALPHA])));
 
         llcolor4u.setToWhite();
-        ensure("setToWhite:Fail to white ", ((255 == llcolor4u.mV[VX]) && (255 == llcolor4u.mV[VY]) && (255 == llcolor4u.mV[VZ])&& (255 == llcolor4u.mV[VW])));
+        ensure("setToWhite:Fail to white ", ((255 == llcolor4u.mV[VRED]) && (255 == llcolor4u.mV[VGREEN]) && (255 == llcolor4u.mV[VBLUE])&& (255 == llcolor4u.mV[VALPHA])));
     }
 
     template<> template<>
@@ -104,11 +104,11 @@ namespace tut
         U8 r = 0x12, g = 0xFF, b = 0xAF, a = 0x23;
         LLColor4U llcolor4u;
         llcolor4u.setVec(r,g,b,a);
-        ensure("1:setVec:Fail to set the values ", ((r == llcolor4u.mV[VX]) && (g == llcolor4u.mV[VY]) && (b == llcolor4u.mV[VZ])&& (a == llcolor4u.mV[VW])));
+        ensure("1:setVec:Fail to set the values ", ((r == llcolor4u.mV[VRED]) && (g == llcolor4u.mV[VGREEN]) && (b == llcolor4u.mV[VBLUE])&& (a == llcolor4u.mV[VALPHA])));
 
         llcolor4u.setToBlack();
         llcolor4u.setVec(r,g,b);
-        ensure("2:setVec:Fail to set the values ", ((r == llcolor4u.mV[VX]) && (g == llcolor4u.mV[VY]) && (b == llcolor4u.mV[VZ])&& (255 == llcolor4u.mV[VW])));
+        ensure("2:setVec:Fail to set the values ", ((r == llcolor4u.mV[VRED]) && (g == llcolor4u.mV[VGREEN]) && (b == llcolor4u.mV[VBLUE])&& (255 == llcolor4u.mV[VALPHA])));
 
         LLColor4U llcolor4u1;
         llcolor4u1.setVec(llcolor4u);
@@ -117,7 +117,7 @@ namespace tut
         const U8 vec[4] = {0x12,0xFF,0xAF,0x23};
         LLColor4U llcolor4u2;
         llcolor4u2.setVec(vec);
-        ensure("4:setVec:Fail to set the values ", ((vec[0] == llcolor4u2.mV[VX]) && (vec[1] == llcolor4u2.mV[VY]) && (vec[2] == llcolor4u2.mV[VZ])&& (vec[3] == llcolor4u2.mV[VW])));
+        ensure("4:setVec:Fail to set the values ", ((vec[0] == llcolor4u2.mV[VRED]) && (vec[1] == llcolor4u2.mV[VGREEN]) && (vec[2] == llcolor4u2.mV[VBLUE])&& (vec[3] == llcolor4u2.mV[VALPHA])));
     }
 
     template<> template<>
@@ -126,7 +126,7 @@ namespace tut
         U8 alpha = 0x12;
         LLColor4U llcolor4u;
         llcolor4u.setAlpha(alpha);
-        ensure("setAlpha:Fail to set alpha value ", (alpha == llcolor4u.mV[VW]));
+        ensure("setAlpha:Fail to set alpha value ", (alpha == llcolor4u.mV[VALPHA]));
     }
 
     template<> template<>
@@ -159,29 +159,29 @@ namespace tut
         llcolor4u3 = llcolor4u1 + llcolor4u2;
         ensure_equals(
             "1a.operator+:Fail to Add the values ",
-            llcolor4u3.mV[VX],
+            llcolor4u3.mV[VRED],
             (U8)(r1+r2));
         ensure_equals(
             "1b.operator+:Fail to Add the values ",
-            llcolor4u3.mV[VY],
+            llcolor4u3.mV[VGREEN],
             (U8)(g1+g2));
         ensure_equals(
             "1c.operator+:Fail to Add the values ",
-            llcolor4u3.mV[VZ],
+            llcolor4u3.mV[VBLUE],
             (U8)(b1+b2));
 
         llcolor4u2 += llcolor4u1;
         ensure_equals(
             "2a.operator+=:Fail to Add the values ",
-            llcolor4u2.mV[VX],
+            llcolor4u2.mV[VRED],
             (U8)(r1+r2));
         ensure_equals(
             "2b.operator+=:Fail to Add the values ",
-            llcolor4u2.mV[VY],
+            llcolor4u2.mV[VGREEN],
             (U8)(g1+g2));
         ensure_equals(
             "2c.operator+=:Fail to Add the values ",
-            llcolor4u2.mV[VZ],
+            llcolor4u2.mV[VBLUE],
             (U8)(b1+b2));
     }
 
@@ -194,29 +194,29 @@ namespace tut
         llcolor4u3 = llcolor4u1 - llcolor4u2;
         ensure_equals(
             "1a. operator-:Fail to Add the values ",
-            llcolor4u3.mV[VX],
+            llcolor4u3.mV[VRED],
             (U8)(r1-r2));
         ensure_equals(
             "1b. operator-:Fail to Add the values ",
-            llcolor4u3.mV[VY],
+            llcolor4u3.mV[VGREEN],
             (U8)(g1-g2));
         ensure_equals(
             "1c. operator-:Fail to Add the values ",
-            llcolor4u3.mV[VZ],
+            llcolor4u3.mV[VBLUE],
             (U8)(b1-b2));
 
         llcolor4u1 -= llcolor4u2;
         ensure_equals(
             "2a. operator-=:Fail to Add the values ",
-            llcolor4u1.mV[VX],
+            llcolor4u1.mV[VRED],
             (U8)(r1-r2));
         ensure_equals(
             "2b. operator-=:Fail to Add the values ",
-            llcolor4u1.mV[VY],
+            llcolor4u1.mV[VGREEN],
             (U8)(g1-g2));
         ensure_equals(
             "2c. operator-=:Fail to Add the values ",
-            llcolor4u1.mV[VZ],
+            llcolor4u1.mV[VBLUE],
             (U8)(b1-b2));
     }
 
@@ -229,30 +229,30 @@ namespace tut
         llcolor4u3 = llcolor4u1 * llcolor4u2;
         ensure_equals(
             "1a. operator*:Fail to multiply the values",
-            llcolor4u3.mV[VX],
+            llcolor4u3.mV[VRED],
             (U8)(r1*r2));
         ensure_equals(
             "1b. operator*:Fail to multiply the values",
-            llcolor4u3.mV[VY],
+            llcolor4u3.mV[VGREEN],
             (U8)(g1*g2));
         ensure_equals(
             "1c. operator*:Fail to multiply the values",
-            llcolor4u3.mV[VZ],
+            llcolor4u3.mV[VBLUE],
             (U8)(b1*b2));
 
         U8 mulVal = 123;
         llcolor4u1 *= mulVal;
         ensure_equals(
             "2a. operator*=:Fail to multiply the values",
-            llcolor4u1.mV[VX],
+            llcolor4u1.mV[VRED],
             (U8)(r1*mulVal));
         ensure_equals(
             "2b. operator*=:Fail to multiply the values",
-            llcolor4u1.mV[VY],
+            llcolor4u1.mV[VGREEN],
             (U8)(g1*mulVal));
         ensure_equals(
             "2c. operator*=:Fail to multiply the values",
-            llcolor4u1.mV[VZ],
+            llcolor4u1.mV[VBLUE],
             (U8)(b1*mulVal));
     }
 
@@ -274,7 +274,7 @@ namespace tut
         LLColor4U llcolor4u(r,g,b,a);
         U8 modVal = 45;
         llcolor4u %= modVal;
-        ensure_equals("operator%=:Fail ", llcolor4u.mV[VW], (U8)(a * modVal));
+        ensure_equals("operator%=:Fail ", llcolor4u.mV[VALPHA], (U8)(a * modVal));
     }
 
     template<> template<>
@@ -284,13 +284,13 @@ namespace tut
         LLColor4U llcolor4u1(r,g,b,a);
         std::string color("12, 23, 132, 50");
         LLColor4U::parseColor4U(color, &llcolor4u1);
-        ensure("parseColor4U() failed to parse the color value ", ((12 == llcolor4u1.mV[VX]) && (23 == llcolor4u1.mV[VY]) && (132 == llcolor4u1.mV[VZ])&& (50 == llcolor4u1.mV[VW])));
+        ensure("parseColor4U() failed to parse the color value ", ((12 == llcolor4u1.mV[VRED]) && (23 == llcolor4u1.mV[VGREEN]) && (132 == llcolor4u1.mV[VBLUE])&& (50 == llcolor4u1.mV[VALPHA])));
 
         color = "12, 23, 132";
-        ensure("2:parseColor4U() failed to parse the color value ",  (FALSE == LLColor4U::parseColor4U(color, &llcolor4u1)));
+        ensure("2:parseColor4U() failed to parse the color value ",  (false == LLColor4U::parseColor4U(color, &llcolor4u1)));
 
         color = "12";
-        ensure("2:parseColor4U() failed to parse the color value ",  (FALSE == LLColor4U::parseColor4U(color, &llcolor4u1)));
+        ensure("2:parseColor4U() failed to parse the color value ",  (false == LLColor4U::parseColor4U(color, &llcolor4u1)));
     }
 
     template<> template<>
@@ -300,8 +300,8 @@ namespace tut
         LLColor4U llcolor4u(r,g,b,a),llcolor4u1;
         const F32 fVal = 3.f;
         llcolor4u1 = llcolor4u.multAll(fVal);
-        ensure("multAll:Fail to multiply ", (((U8)ll_round(r * fVal) == llcolor4u1.mV[VX]) && (U8)ll_round(g * fVal) == llcolor4u1.mV[VY]
-                                            && ((U8)ll_round(b * fVal) == llcolor4u1.mV[VZ])&& ((U8)ll_round(a * fVal) == llcolor4u1.mV[VW])));
+        ensure("multAll:Fail to multiply ", (((U8)ll_round(r * fVal) == llcolor4u1.mV[VRED]) && (U8)ll_round(g * fVal) == llcolor4u1.mV[VGREEN]
+                                            && ((U8)ll_round(b * fVal) == llcolor4u1.mV[VBLUE])&& ((U8)ll_round(a * fVal) == llcolor4u1.mV[VALPHA])));
     }
 
     template<> template<>
@@ -311,13 +311,13 @@ namespace tut
         U8 r2 = 23, g2 = 230, b2 = 124, a2 = 255;
         LLColor4U llcolor4u(r1,g1,b1,a1),llcolor4u1(r2,g2,b2,a2);
         llcolor4u1 = llcolor4u1.addClampMax(llcolor4u);
-        ensure("1:addClampMax():Fail to add the value ",  ((r1+r2 == llcolor4u1.mV[VX]) && (255 == llcolor4u1.mV[VY]) && (b1+b2 == llcolor4u1.mV[VZ])&& (255 == llcolor4u1.mV[VW])));
+        ensure("1:addClampMax():Fail to add the value ",  ((r1+r2 == llcolor4u1.mV[VRED]) && (255 == llcolor4u1.mV[VGREEN]) && (b1+b2 == llcolor4u1.mV[VBLUE])&& (255 == llcolor4u1.mV[VALPHA])));
 
         r1 = 132, g1 = 3, b1 = 3, a1 = 2;
         r2 = 123, g2 = 230, b2 = 154, a2 = 25;
         LLColor4U llcolor4u2(r1,g1,b1,a1),llcolor4u3(r2,g2,b2,a2);
         llcolor4u3 = llcolor4u3.addClampMax(llcolor4u2);
-        ensure("2:addClampMax():Fail to add the value ",  ((255 == llcolor4u3.mV[VX]) && (g1+g2 == llcolor4u3.mV[VY]) && (b1+b2 == llcolor4u3.mV[VZ])&& (a1+a2 == llcolor4u3.mV[VW])));
+        ensure("2:addClampMax():Fail to add the value ",  ((255 == llcolor4u3.mV[VRED]) && (g1+g2 == llcolor4u3.mV[VGREEN]) && (b1+b2 == llcolor4u3.mV[VBLUE])&& (a1+a2 == llcolor4u3.mV[VALPHA])));
     }
 
     template<> template<>
@@ -331,6 +331,6 @@ namespace tut
         F32 color_scale_factor = MAX_COLOR/r;
         S32 r2 = ll_round(r * color_scale_factor);
         S32 g2 = ll_round(g * color_scale_factor);
-        ensure("setVecScaleClamp():Fail to add the value ",  ((r2 == llcolor4u.mV[VX]) && (g2 == llcolor4u.mV[VY]) && (0 == llcolor4u.mV[VZ])&& (255 == llcolor4u.mV[VW])));
+        ensure("setVecScaleClamp():Fail to add the value ",  ((r2 == llcolor4u.mV[VRED]) && (g2 == llcolor4u.mV[VGREEN]) && (0 == llcolor4u.mV[VBLUE])&& (255 == llcolor4u.mV[VALPHA])));
     }
 }
diff --git a/indra/llmath/tests/v4math_test.cpp b/indra/llmath/tests/v4math_test.cpp
index 07099cd417..236585f13b 100644
--- a/indra/llmath/tests/v4math_test.cpp
+++ b/indra/llmath/tests/v4math_test.cpp
@@ -123,9 +123,9 @@ namespace tut
         vec4.abs();
         ensure("abs:Fail " ,((x == vec4.mV[VX]) && (-y == vec4.mV[VY]) && (-z == vec4.mV[VZ])&& (-w == vec4.mV[VW])));
         vec4.clearVec();
-        ensure("isExactlyClear:Fail " ,(TRUE == vec4.isExactlyClear()));
+        ensure("isExactlyClear:Fail " ,(true == vec4.isExactlyClear()));
         vec4.zeroVec();
-        ensure("isExactlyZero:Fail " ,(TRUE == vec4.isExactlyZero()));
+        ensure("isExactlyZero:Fail " ,(true == vec4.isExactlyZero()));
     }
 
     template<> template<>
@@ -303,11 +303,11 @@ namespace tut
     {
         F32 x = 1.f, y = 2.f, z = -1.1f,epsilon = .23425f;
         LLVector4 vec4(x,y,z), vec4a(x,y,z);
-        ensure("1:are_parallel: Fail " ,(TRUE == are_parallel(vec4a,vec4,epsilon)));
+        ensure("1:are_parallel: Fail " ,(true == are_parallel(vec4a,vec4,epsilon)));
         x = 21.f, y = 12.f, z = -123.1f;
         vec4a.clearVec();
         vec4a.setVec(x,y,z);
-        ensure("2:are_parallel: Fail " ,(FALSE == are_parallel(vec4a,vec4,epsilon)));
+        ensure("2:are_parallel: Fail " ,(false == are_parallel(vec4a,vec4,epsilon)));
     }
 
     template<> template<>
diff --git a/indra/llmath/tests/xform_test.cpp b/indra/llmath/tests/xform_test.cpp
index ad56cdb15c..6d6a64ec4c 100644
--- a/indra/llmath/tests/xform_test.cpp
+++ b/indra/llmath/tests/xform_test.cpp
@@ -91,7 +91,7 @@ namespace tut
         xform_obj.setPositionZ(z);
         ensure("setPositionX/Y/Z failed: ", xform_obj.getPosition() == vec);
 
-        xform_obj.setScaleChildOffset(TRUE);
+        xform_obj.setScaleChildOffset(true);
         ensure("setScaleChildOffset failed: ", xform_obj.getScaleChildOffset());
 
         vec.setVec(x, y, z);
@@ -121,7 +121,7 @@ namespace tut
         // Is that the expected behavior?
     }
 
-    // test cases for inline BOOL setParent(LLXform *parent) and getParent() fn.
+    // test cases for inline bool setParent(LLXform *parent) and getParent() fn.
     template<> template<>
     void xform_test_object_t::test<3>()
     {
@@ -216,7 +216,7 @@ namespace tut
         parent.setPosition(llvecpospar);
 
         LLVector3 llvecparentscale(1.0, 2.0, 0);
-        parent.setScaleChildOffset(TRUE);
+        parent.setScaleChildOffset(true);
         parent.setScale(llvecparentscale);
 
         LLQuaternion quat(1, 2, 3, 4);
diff --git a/indra/llmath/v2math.cpp b/indra/llmath/v2math.cpp
index ecbfe7378c..4649e13376 100644
--- a/indra/llmath/v2math.cpp
+++ b/indra/llmath/v2math.cpp
@@ -42,13 +42,13 @@ LLVector2 LLVector2::zero(0,0);
 // Non-member functions
 
 // Sets all values to absolute value of their original values
-// Returns TRUE if data changed
-BOOL LLVector2::abs()
+// Returns true if data changed
+bool LLVector2::abs()
 {
-    BOOL ret = FALSE;
+    bool ret{ false };
 
-    if (mV[0] < 0.f) { mV[0] = -mV[0]; ret = TRUE; }
-    if (mV[1] < 0.f) { mV[1] = -mV[1]; ret = TRUE; }
+    if (mV[0] < 0.f) { mV[0] = -mV[0]; ret = true; }
+    if (mV[1] < 0.f) { mV[1] = -mV[1]; ret = true; }
 
     return ret;
 }
@@ -67,7 +67,7 @@ F32 angle_between(const LLVector2& a, const LLVector2& b)
     return angle;
 }
 
-BOOL are_parallel(const LLVector2 &a, const LLVector2 &b, float epsilon)
+bool are_parallel(const LLVector2 &a, const LLVector2 &b, float epsilon)
 {
     LLVector2 an = a;
     LLVector2 bn = b;
@@ -76,9 +76,9 @@ BOOL are_parallel(const LLVector2 &a, const LLVector2 &b, float epsilon)
     F32 dot = an * bn;
     if ( (1.0f - fabs(dot)) < epsilon)
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 
diff --git a/indra/llmath/v2math.h b/indra/llmath/v2math.h
index 5c756a7f84..a61c946304 100644
--- a/indra/llmath/v2math.h
+++ b/indra/llmath/v2math.h
@@ -78,12 +78,12 @@ class LLVector2
         F32     magVecSquared() const;      // deprecated
         F32     normVec();                  // deprecated
 
-        BOOL        abs();                      // sets all values to absolute value of original value (first octant), returns TRUE if changed
+        bool    abs();                      // sets all values to absolute value of original value (first octant), returns true if changed
 
         const LLVector2&    scaleVec(const LLVector2& vec);             // scales per component by vec
 
-        BOOL isNull();          // Returns TRUE if vector has a _very_small_ length
-        BOOL isExactlyZero() const      { return !mV[VX] && !mV[VY]; }
+        bool isNull();          // Returns true if vector has a _very_small_ length
+        bool isExactlyZero() const      { return !mV[VX] && !mV[VY]; }
 
         F32 operator[](int idx) const { return mV[idx]; }
         F32 &operator[](int idx) { return mV[idx]; }
@@ -114,7 +114,7 @@ class LLVector2
 // Non-member functions
 
 F32 angle_between(const LLVector2 &a, const LLVector2 &b);  // Returns angle (radians) between a and b
-BOOL are_parallel(const LLVector2 &a, const LLVector2 &b, F32 epsilon=F_APPROXIMATELY_ZERO);    // Returns TRUE if a and b are very close to parallel
+bool are_parallel(const LLVector2 &a, const LLVector2 &b, F32 epsilon=F_APPROXIMATELY_ZERO);    // Returns true if a and b are very close to parallel
 F32 dist_vec(const LLVector2 &a, const LLVector2 &b);       // Returns distance between a and b
 F32 dist_vec_squared(const LLVector2 &a, const LLVector2 &b);// Returns distance squared between a and b
 F32 dist_vec_squared2D(const LLVector2 &a, const LLVector2 &b);// Returns distance squared between a and b ignoring Z component
@@ -232,7 +232,7 @@ inline F32 LLVector2::lengthSquared(void) const
     return mV[0]*mV[0] + mV[1]*mV[1];
 }
 
-inline F32      LLVector2::normalize(void)
+inline F32 LLVector2::normalize(void)
 {
     F32 mag = (F32) sqrt(mV[0]*mV[0] + mV[1]*mV[1]);
     F32 oomag;
@@ -299,13 +299,13 @@ inline const LLVector2& LLVector2::scaleVec(const LLVector2& vec)
     return *this;
 }
 
-inline BOOL LLVector2::isNull()
+inline bool LLVector2::isNull()
 {
     if ( F_APPROXIMATELY_ZERO > mV[VX]*mV[VX] + mV[VY]*mV[VY] )
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 
diff --git a/indra/llmath/v3color.cpp b/indra/llmath/v3color.cpp
index 9fe9c8d5e5..4367b993f8 100644
--- a/indra/llmath/v3color.cpp
+++ b/indra/llmath/v3color.cpp
@@ -63,7 +63,7 @@ const LLColor3& LLColor3::operator=(const LLColor4 &a)
 
 std::ostream& operator<<(std::ostream& s, const LLColor3 &a)
 {
-    s << "{ " << a.mV[VX] << ", " << a.mV[VY] << ", " << a.mV[VZ] << " }";
+    s << "{ " << a.mV[VRED] << ", " << a.mV[VGREEN] << ", " << a.mV[VBLUE] << " }";
     return s;
 }
 
diff --git a/indra/llmath/v3color.h b/indra/llmath/v3color.h
index ea26e9eb76..7b92f85a0c 100644
--- a/indra/llmath/v3color.h
+++ b/indra/llmath/v3color.h
@@ -196,17 +196,17 @@ inline LLColor3::LLColor3(void)
 
 inline LLColor3::LLColor3(F32 r, F32 g, F32 b)
 {
-    mV[VX] = r;
-    mV[VY] = g;
-    mV[VZ] = b;
+    mV[VRED] = r;
+    mV[VGREEN] = g;
+    mV[VBLUE] = b;
 }
 
 
 inline LLColor3::LLColor3(const F32 *vec)
 {
-    mV[VX] = vec[VX];
-    mV[VY] = vec[VY];
-    mV[VZ] = vec[VZ];
+    mV[VRED] = vec[VRED];
+    mV[VGREEN] = vec[VGREEN];
+    mV[VBLUE] = vec[VBLUE];
 }
 
 #if LL_WINDOWS
@@ -226,11 +226,11 @@ inline LLColor3::LLColor3(const char* color_string) // takes a string of format
     char tempstr[7];
     strncpy(tempstr,color_string,6);        /* Flawfinder: ignore */
     tempstr[6] = '\0';
-    mV[VZ] = (F32)strtol(&tempstr[4],NULL,16)/255.f;
+    mV[VBLUE] = (F32)strtol(&tempstr[4],NULL,16)/255.f;
     tempstr[4] = '\0';
-    mV[VY] = (F32)strtol(&tempstr[2],NULL,16)/255.f;
+    mV[VGREEN] = (F32)strtol(&tempstr[2],NULL,16)/255.f;
     tempstr[2] = '\0';
-    mV[VX] = (F32)strtol(&tempstr[0],NULL,16)/255.f;
+    mV[VRED] = (F32)strtol(&tempstr[0],NULL,16)/255.f;
 }
 
 inline const LLColor3&  LLColor3::setToBlack(void)
diff --git a/indra/llmath/v3dmath.cpp b/indra/llmath/v3dmath.cpp
index 6ecd1a00ac..bb55c812b5 100644
--- a/indra/llmath/v3dmath.cpp
+++ b/indra/llmath/v3dmath.cpp
@@ -52,31 +52,31 @@ const LLVector3d LLVector3d::z_axis_neg(0, 0, -1);
 
 
 // Clamps each values to range (min,max).
-// Returns TRUE if data changed.
-BOOL LLVector3d::clamp(F64 min, F64 max)
+// Returns true if data changed.
+bool LLVector3d::clamp(F64 min, F64 max)
 {
-    BOOL ret = FALSE;
+    bool ret{ false };
 
-    if (mdV[0] < min) { mdV[0] = min; ret = TRUE; }
-    if (mdV[1] < min) { mdV[1] = min; ret = TRUE; }
-    if (mdV[2] < min) { mdV[2] = min; ret = TRUE; }
+    if (mdV[0] < min) { mdV[0] = min; ret = true; }
+    if (mdV[1] < min) { mdV[1] = min; ret = true; }
+    if (mdV[2] < min) { mdV[2] = min; ret = true; }
 
-    if (mdV[0] > max) { mdV[0] = max; ret = TRUE; }
-    if (mdV[1] > max) { mdV[1] = max; ret = TRUE; }
-    if (mdV[2] > max) { mdV[2] = max; ret = TRUE; }
+    if (mdV[0] > max) { mdV[0] = max; ret = true; }
+    if (mdV[1] > max) { mdV[1] = max; ret = true; }
+    if (mdV[2] > max) { mdV[2] = max; ret = true; }
 
     return ret;
 }
 
 // Sets all values to absolute value of their original values
-// Returns TRUE if data changed
-BOOL LLVector3d::abs()
+// Returns true if data changed
+bool LLVector3d::abs()
 {
-    BOOL ret = FALSE;
+    bool ret{ false };
 
-    if (mdV[0] < 0.0) { mdV[0] = -mdV[0]; ret = TRUE; }
-    if (mdV[1] < 0.0) { mdV[1] = -mdV[1]; ret = TRUE; }
-    if (mdV[2] < 0.0) { mdV[2] = -mdV[2]; ret = TRUE; }
+    if (mdV[0] < 0.0) { mdV[0] = -mdV[0]; ret = true; }
+    if (mdV[1] < 0.0) { mdV[1] = -mdV[1]; ret = true; }
+    if (mdV[2] < 0.0) { mdV[2] = -mdV[2]; ret = true; }
 
     return ret;
 }
@@ -127,11 +127,11 @@ const LLVector3d&   LLVector3d::rotVec(F64 angle, F64 x, F64 y, F64 z)
 }
 
 
-BOOL LLVector3d::parseVector3d(const std::string& buf, LLVector3d* value)
+bool LLVector3d::parseVector3d(const std::string& buf, LLVector3d* value)
 {
-    if( buf.empty() || value == NULL)
+    if( buf.empty() || value == nullptr)
     {
-        return FALSE;
+        return false;
     }
 
     LLVector3d v;
@@ -139,9 +139,9 @@ BOOL LLVector3d::parseVector3d(const std::string& buf, LLVector3d* value)
     if( 3 == count )
     {
         value->setVec( v );
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
diff --git a/indra/llmath/v3dmath.h b/indra/llmath/v3dmath.h
index 99c6905e70..ece8c54ea4 100644
--- a/indra/llmath/v3dmath.h
+++ b/indra/llmath/v3dmath.h
@@ -68,9 +68,9 @@ class LLVector3d
             return ret;
         }
 
-        inline BOOL isFinite() const;                                   // checks to see if all values of LLVector3d are finite
-        BOOL        clamp(const F64 min, const F64 max);        // Clamps all values to (min,max), returns TRUE if data changed
-        BOOL        abs();                      // sets all values to absolute value of original value (first octant), returns TRUE if changed
+        inline bool isFinite() const;                                   // checks to see if all values of LLVector3d are finite
+        bool        clamp(const F64 min, const F64 max);        // Clamps all values to (min,max), returns true if data changed
+        bool        abs();                      // sets all values to absolute value of original value (first octant), returns true if changed
 
         inline const LLVector3d&    clear();        // Clears LLVector3d to (0, 0, 0, 1)
         inline const LLVector3d&    clearVec();     // deprecated
@@ -98,8 +98,8 @@ class LLVector3d
         const LLVector3d&   rotVec(const LLMatrix3 &mat);               // Rotates by LLMatrix4 mat
         const LLVector3d&   rotVec(const LLQuaternion &q);              // Rotates by LLQuaternion q
 
-        BOOL isNull() const;            // Returns TRUE if vector has a _very_small_ length
-        BOOL isExactlyZero() const      { return !mdV[VX] && !mdV[VY] && !mdV[VZ]; }
+        bool isNull() const;            // Returns true if vector has a _very_small_ length
+        bool isExactlyZero() const      { return !mdV[VX] && !mdV[VY] && !mdV[VZ]; }
 
         const LLVector3d&   operator=(const LLVector4 &a);
 
@@ -126,7 +126,7 @@ class LLVector3d
 
         friend std::ostream&     operator<<(std::ostream& s, const LLVector3d& a);      // Stream a
 
-        static BOOL parseVector3d(const std::string& buf, LLVector3d* value);
+        static bool parseVector3d(const std::string& buf, LLVector3d* value);
 
 };
 
@@ -189,7 +189,7 @@ inline LLVector3d::LLVector3d(const LLVector3d &copy)
 // Destructors
 
 // checker
-inline BOOL LLVector3d::isFinite() const
+inline bool LLVector3d::isFinite() const
 {
     return (llfinite(mdV[VX]) && llfinite(mdV[VY]) && llfinite(mdV[VZ]));
 }
@@ -472,13 +472,13 @@ inline LLVector3d lerp(const LLVector3d& a, const LLVector3d& b, const F64 u)
 }
 
 
-inline BOOL LLVector3d::isNull() const
+inline bool LLVector3d::isNull() const
 {
     if ( F_APPROXIMATELY_ZERO > mdV[VX]*mdV[VX] + mdV[VY]*mdV[VY] + mdV[VZ]*mdV[VZ] )
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -495,7 +495,7 @@ inline F64 angle_between(const LLVector3d& a, const LLVector3d& b)
     return angle;
 }
 
-inline BOOL are_parallel(const LLVector3d& a, const LLVector3d& b, const F64 epsilon)
+inline bool are_parallel(const LLVector3d& a, const LLVector3d& b, const F64 epsilon)
 {
     LLVector3d an = a;
     LLVector3d bn = b;
@@ -504,10 +504,9 @@ inline BOOL are_parallel(const LLVector3d& a, const LLVector3d& b, const F64 eps
     F64 dot = an * bn;
     if ( (1.0f - fabs(dot)) < epsilon)
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
-
+    return false;
 }
 
 inline LLVector3d projected_vec(const LLVector3d& a, const LLVector3d& b)
diff --git a/indra/llmath/v3math.cpp b/indra/llmath/v3math.cpp
index a867b9f578..73ad2a4ed6 100644
--- a/indra/llmath/v3math.cpp
+++ b/indra/llmath/v3math.cpp
@@ -53,27 +53,27 @@ const LLVector3 LLVector3::all_one(1.f,1.f,1.f);
 
 
 // Clamps each values to range (min,max).
-// Returns TRUE if data changed.
-BOOL LLVector3::clamp(F32 min, F32 max)
+// Returns true if data changed.
+bool LLVector3::clamp(F32 min, F32 max)
 {
-    BOOL ret = FALSE;
+    bool ret{ false };
 
-    if (mV[0] < min) { mV[0] = min; ret = TRUE; }
-    if (mV[1] < min) { mV[1] = min; ret = TRUE; }
-    if (mV[2] < min) { mV[2] = min; ret = TRUE; }
+    if (mV[0] < min) { mV[0] = min; ret = true; }
+    if (mV[1] < min) { mV[1] = min; ret = true; }
+    if (mV[2] < min) { mV[2] = min; ret = true; }
 
-    if (mV[0] > max) { mV[0] = max; ret = TRUE; }
-    if (mV[1] > max) { mV[1] = max; ret = TRUE; }
-    if (mV[2] > max) { mV[2] = max; ret = TRUE; }
+    if (mV[0] > max) { mV[0] = max; ret = true; }
+    if (mV[1] > max) { mV[1] = max; ret = true; }
+    if (mV[2] > max) { mV[2] = max; ret = true; }
 
     return ret;
 }
 
 // Clamps length to an upper limit.
-// Returns TRUE if the data changed
-BOOL LLVector3::clampLength( F32 length_limit )
+// Returns true if the data changed
+bool LLVector3::clampLength( F32 length_limit )
 {
-    BOOL changed = FALSE;
+    bool changed{ false };
 
     F32 len = length();
     if (llfinite(len))
@@ -88,7 +88,7 @@ BOOL LLVector3::clampLength( F32 length_limit )
             mV[0] *= length_limit;
             mV[1] *= length_limit;
             mV[2] *= length_limit;
-            changed = TRUE;
+            changed = true;
         }
     }
     else
@@ -108,7 +108,7 @@ BOOL LLVector3::clampLength( F32 length_limit )
             {
                 // no it can't be salvaged --> clear it
                 clear();
-                changed = TRUE;
+                changed = true;
                 break;
             }
         }
@@ -134,31 +134,31 @@ BOOL LLVector3::clampLength( F32 length_limit )
     return changed;
 }
 
-BOOL LLVector3::clamp(const LLVector3 &min_vec, const LLVector3 &max_vec)
+bool LLVector3::clamp(const LLVector3 &min_vec, const LLVector3 &max_vec)
 {
-    BOOL ret = FALSE;
+    bool ret{ false };
 
-    if (mV[0] < min_vec[0]) { mV[0] = min_vec[0]; ret = TRUE; }
-    if (mV[1] < min_vec[1]) { mV[1] = min_vec[1]; ret = TRUE; }
-    if (mV[2] < min_vec[2]) { mV[2] = min_vec[2]; ret = TRUE; }
+    if (mV[0] < min_vec[0]) { mV[0] = min_vec[0]; ret = true; }
+    if (mV[1] < min_vec[1]) { mV[1] = min_vec[1]; ret = true; }
+    if (mV[2] < min_vec[2]) { mV[2] = min_vec[2]; ret = true; }
 
-    if (mV[0] > max_vec[0]) { mV[0] = max_vec[0]; ret = TRUE; }
-    if (mV[1] > max_vec[1]) { mV[1] = max_vec[1]; ret = TRUE; }
-    if (mV[2] > max_vec[2]) { mV[2] = max_vec[2]; ret = TRUE; }
+    if (mV[0] > max_vec[0]) { mV[0] = max_vec[0]; ret = true; }
+    if (mV[1] > max_vec[1]) { mV[1] = max_vec[1]; ret = true; }
+    if (mV[2] > max_vec[2]) { mV[2] = max_vec[2]; ret = true; }
 
     return ret;
 }
 
 
 // Sets all values to absolute value of their original values
-// Returns TRUE if data changed
-BOOL LLVector3::abs()
+// Returns true if data changed
+bool LLVector3::abs()
 {
-    BOOL ret = FALSE;
+    bool ret{ false };
 
-    if (mV[0] < 0.f) { mV[0] = -mV[0]; ret = TRUE; }
-    if (mV[1] < 0.f) { mV[1] = -mV[1]; ret = TRUE; }
-    if (mV[2] < 0.f) { mV[2] = -mV[2]; ret = TRUE; }
+    if (mV[0] < 0.f) { mV[0] = -mV[0]; ret = true; }
+    if (mV[1] < 0.f) { mV[1] = -mV[1]; ret = true; }
+    if (mV[2] < 0.f) { mV[2] = -mV[2]; ret = true; }
 
     return ret;
 }
@@ -358,11 +358,11 @@ const LLVector3& operator*=(LLVector3 &a, const LLQuaternion &rot)
 }
 
 // static
-BOOL LLVector3::parseVector3(const std::string& buf, LLVector3* value)
+bool LLVector3::parseVector3(const std::string& buf, LLVector3* value)
 {
-    if( buf.empty() || value == NULL)
+    if( buf.empty() || value == nullptr)
     {
-        return FALSE;
+        return false;
     }
 
     LLVector3 v;
@@ -370,10 +370,10 @@ BOOL LLVector3::parseVector3(const std::string& buf, LLVector3* value)
     if( 3 == count )
     {
         value->setVec( v );
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 // Displacement from query point to nearest neighbor point on bounding box.
diff --git a/indra/llmath/v3math.h b/indra/llmath/v3math.h
index 0f4a4a07ae..d063b15c74 100644
--- a/indra/llmath/v3math.h
+++ b/indra/llmath/v3math.h
@@ -71,16 +71,16 @@ class LLVector3
 
         void setValue(const LLSD& sd);
 
-        inline BOOL isFinite() const;                                   // checks to see if all values of LLVector3 are finite
-        BOOL        clamp(F32 min, F32 max);        // Clamps all values to (min,max), returns TRUE if data changed
-        BOOL        clamp(const LLVector3 &min_vec, const LLVector3 &max_vec); // Scales vector by another vector
-        BOOL        clampLength( F32 length_limit );                    // Scales vector to limit length to a value
+        inline bool isFinite() const;                                   // checks to see if all values of LLVector3 are finite
+        bool        clamp(F32 min, F32 max);        // Clamps all values to (min,max), returns true if data changed
+        bool        clamp(const LLVector3 &min_vec, const LLVector3 &max_vec); // Scales vector by another vector
+        bool        clampLength( F32 length_limit );                    // Scales vector to limit length to a value
 
         void        quantize16(F32 lowerxy, F32 upperxy, F32 lowerz, F32 upperz);   // changes the vector to reflect quatization
         void        quantize8(F32 lowerxy, F32 upperxy, F32 lowerz, F32 upperz);    // changes the vector to reflect quatization
         void        snap(S32 sig_digits);                                           // snaps x,y,z to sig_digits decimal places
 
-        BOOL        abs();                      // sets all values to absolute value of original value (first octant), returns TRUE if changed
+        bool        abs();                      // sets all values to absolute value of original value (first octant), returns true if changed
 
         inline void clear();                        // Clears LLVector3 to (0, 0, 0)
         inline void setZero();                      // Clears LLVector3 to (0, 0, 0)
@@ -108,7 +108,7 @@ class LLVector3
         inline F32      normalize();    // Normalizes and returns the magnitude of LLVector3
         inline F32      normVec();      // deprecated
 
-        inline BOOL inRange( F32 min, F32 max ) const; // Returns true if all values of the vector are between min and max
+        inline bool inRange( F32 min, F32 max ) const; // Returns true if all values of the vector are between min and max
 
         const LLVector3&    rotVec(F32 angle, const LLVector3 &vec);    // Rotates about vec by angle radians
         const LLVector3&    rotVec(F32 angle, F32 x, F32 y, F32 z);     // Rotates about x,y,z by angle radians
@@ -119,8 +119,8 @@ class LLVector3
         const LLVector3&    scaleVec(const LLVector3& vec);             // scales per component by vec
         LLVector3           scaledVec(const LLVector3& vec) const;          // get a copy of this vector scaled by vec
 
-        BOOL isNull() const;            // Returns TRUE if vector has a _very_small_ length
-        BOOL isExactlyZero() const      { return !mV[VX] && !mV[VY] && !mV[VZ]; }
+        bool isNull() const;            // Returns true if vector has a _very_small_ length
+        bool isExactlyZero() const      { return !mV[VX] && !mV[VY] && !mV[VZ]; }
 
         F32 operator[](int idx) const { return mV[idx]; }
         F32 &operator[](int idx) { return mV[idx]; }
@@ -149,7 +149,7 @@ class LLVector3
 
         friend std::ostream&     operator<<(std::ostream& s, const LLVector3 &a);       // Stream a
 
-        static BOOL parseVector3(const std::string& buf, LLVector3* value);
+        static bool parseVector3(const std::string& buf, LLVector3* value);
 };
 
 typedef LLVector3 LLSimLocalVec;
@@ -157,7 +157,7 @@ typedef LLVector3 LLSimLocalVec;
 // Non-member functions
 
 F32 angle_between(const LLVector3 &a, const LLVector3 &b);  // Returns angle (radians) between a and b
-BOOL are_parallel(const LLVector3 &a, const LLVector3 &b, F32 epsilon=F_APPROXIMATELY_ZERO);    // Returns TRUE if a and b are very close to parallel
+bool are_parallel(const LLVector3 &a, const LLVector3 &b, F32 epsilon=F_APPROXIMATELY_ZERO);    // Returns true if a and b are very close to parallel
 F32 dist_vec(const LLVector3 &a, const LLVector3 &b);       // Returns distance between a and b
 F32 dist_vec_squared(const LLVector3 &a, const LLVector3 &b);// Returns distance squared between a and b
 F32 dist_vec_squared2D(const LLVector3 &a, const LLVector3 &b);// Returns distance squared between a and b ignoring Z component
@@ -202,7 +202,7 @@ inline LLVector3::LLVector3(const LLVector3 &copy)
 // Destructors
 
 // checker
-inline BOOL LLVector3::isFinite() const
+inline bool LLVector3::isFinite() const
 {
     return (llfinite(mV[VX]) && llfinite(mV[VY]) && llfinite(mV[VZ]));
 }
@@ -350,7 +350,7 @@ inline F32  LLVector3::magVecSquared(void) const
     return mV[0]*mV[0] + mV[1]*mV[1] + mV[2]*mV[2];
 }
 
-inline BOOL LLVector3::inRange( F32 min, F32 max ) const
+inline bool LLVector3::inRange( F32 min, F32 max ) const
 {
     return mV[0] >= min && mV[0] <= max &&
            mV[1] >= min && mV[1] <= max &&
@@ -539,13 +539,13 @@ inline LLVector3 lerp(const LLVector3 &a, const LLVector3 &b, F32 u)
 }
 
 
-inline BOOL LLVector3::isNull() const
+inline bool LLVector3::isNull() const
 {
     if ( F_APPROXIMATELY_ZERO > mV[VX]*mV[VX] + mV[VY]*mV[VY] + mV[VZ]*mV[VZ] )
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 inline void update_min_max(LLVector3& min, LLVector3& max, const LLVector3& pos)
@@ -589,7 +589,7 @@ inline F32 angle_between(const LLVector3& a, const LLVector3& b)
     return atan2f(sqrtf(c * c), ab); // return the angle
 }
 
-inline BOOL are_parallel(const LLVector3 &a, const LLVector3 &b, F32 epsilon)
+inline bool are_parallel(const LLVector3 &a, const LLVector3 &b, F32 epsilon)
 {
     LLVector3 an = a;
     LLVector3 bn = b;
@@ -598,9 +598,9 @@ inline BOOL are_parallel(const LLVector3 &a, const LLVector3 &b, F32 epsilon)
     F32 dot = an * bn;
     if ( (1.0f - fabs(dot)) < epsilon)
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 inline std::ostream& operator<<(std::ostream& s, const LLVector3 &a)
diff --git a/indra/llmath/v4color.cpp b/indra/llmath/v4color.cpp
index 497281c27e..ad13656bbd 100644
--- a/indra/llmath/v4color.cpp
+++ b/indra/llmath/v4color.cpp
@@ -133,57 +133,57 @@ LLColor4::operator LLColor4U() const
 
 LLColor4::LLColor4(const LLColor3 &vec, F32 a)
 {
-    mV[VX] = vec.mV[VX];
-    mV[VY] = vec.mV[VY];
-    mV[VZ] = vec.mV[VZ];
-    mV[VW] = a;
+    mV[VRED] = vec.mV[VRED];
+    mV[VGREEN] = vec.mV[VGREEN];
+    mV[VBLUE] = vec.mV[VBLUE];
+    mV[VALPHA] = a;
 }
 
 LLColor4::LLColor4(const LLColor4U& color4u)
 {
     const F32 SCALE = 1.f/255.f;
-    mV[VX] = color4u.mV[VX] * SCALE;
-    mV[VY] = color4u.mV[VY] * SCALE;
-    mV[VZ] = color4u.mV[VZ] * SCALE;
-    mV[VW] = color4u.mV[VW] * SCALE;
+    mV[VRED] = color4u.mV[VRED] * SCALE;
+    mV[VGREEN] = color4u.mV[VGREEN] * SCALE;
+    mV[VBLUE] = color4u.mV[VBLUE] * SCALE;
+    mV[VALPHA] = color4u.mV[VALPHA] * SCALE;
 }
 
 LLColor4::LLColor4(const LLVector4& vector4)
 {
-    mV[VX] = vector4.mV[VX];
-    mV[VY] = vector4.mV[VY];
-    mV[VZ] = vector4.mV[VZ];
-    mV[VW] = vector4.mV[VW];
+    mV[VRED] = vector4.mV[VRED];
+    mV[VGREEN] = vector4.mV[VGREEN];
+    mV[VBLUE] = vector4.mV[VBLUE];
+    mV[VALPHA] = vector4.mV[VALPHA];
 }
 
 const LLColor4& LLColor4::set(const LLColor4U& color4u)
 {
     const F32 SCALE = 1.f/255.f;
-    mV[VX] = color4u.mV[VX] * SCALE;
-    mV[VY] = color4u.mV[VY] * SCALE;
-    mV[VZ] = color4u.mV[VZ] * SCALE;
-    mV[VW] = color4u.mV[VW] * SCALE;
+    mV[VRED] = color4u.mV[VRED] * SCALE;
+    mV[VGREEN] = color4u.mV[VGREEN] * SCALE;
+    mV[VBLUE] = color4u.mV[VBLUE] * SCALE;
+    mV[VALPHA] = color4u.mV[VALPHA] * SCALE;
     return (*this);
 }
 
 const LLColor4& LLColor4::set(const LLColor3 &vec)
 {
-    mV[VX] = vec.mV[VX];
-    mV[VY] = vec.mV[VY];
-    mV[VZ] = vec.mV[VZ];
+    mV[VRED] = vec.mV[VRED];
+    mV[VGREEN] = vec.mV[VGREEN];
+    mV[VBLUE] = vec.mV[VBLUE];
 
 //  no change to alpha!
-//  mV[VW] = 1.f;
+//  mV[VALPHA] = 1.f;
 
     return (*this);
 }
 
 const LLColor4& LLColor4::set(const LLColor3 &vec, F32 a)
 {
-    mV[VX] = vec.mV[VX];
-    mV[VY] = vec.mV[VY];
-    mV[VZ] = vec.mV[VZ];
-    mV[VW] = a;
+    mV[VRED] = vec.mV[VRED];
+    mV[VGREEN] = vec.mV[VGREEN];
+    mV[VBLUE] = vec.mV[VBLUE];
+    mV[VALPHA] = a;
     return (*this);
 }
 
@@ -191,22 +191,22 @@ const LLColor4& LLColor4::set(const LLColor3 &vec, F32 a)
 const LLColor4& LLColor4::setVec(const LLColor4U& color4u)
 {
     const F32 SCALE = 1.f/255.f;
-    mV[VX] = color4u.mV[VX] * SCALE;
-    mV[VY] = color4u.mV[VY] * SCALE;
-    mV[VZ] = color4u.mV[VZ] * SCALE;
-    mV[VW] = color4u.mV[VW] * SCALE;
+    mV[VRED] = color4u.mV[VRED] * SCALE;
+    mV[VGREEN] = color4u.mV[VGREEN] * SCALE;
+    mV[VBLUE] = color4u.mV[VBLUE] * SCALE;
+    mV[VALPHA] = color4u.mV[VALPHA] * SCALE;
     return (*this);
 }
 
 // deprecated -- use set()
 const LLColor4& LLColor4::setVec(const LLColor3 &vec)
 {
-    mV[VX] = vec.mV[VX];
-    mV[VY] = vec.mV[VY];
-    mV[VZ] = vec.mV[VZ];
+    mV[VRED] = vec.mV[VRED];
+    mV[VGREEN] = vec.mV[VGREEN];
+    mV[VBLUE] = vec.mV[VBLUE];
 
 //  no change to alpha!
-//  mV[VW] = 1.f;
+//  mV[VALPHA] = 1.f;
 
     return (*this);
 }
@@ -214,10 +214,10 @@ const LLColor4& LLColor4::setVec(const LLColor3 &vec)
 // deprecated -- use set()
 const LLColor4& LLColor4::setVec(const LLColor3 &vec, F32 a)
 {
-    mV[VX] = vec.mV[VX];
-    mV[VY] = vec.mV[VY];
-    mV[VZ] = vec.mV[VZ];
-    mV[VW] = a;
+    mV[VRED] = vec.mV[VRED];
+    mV[VGREEN] = vec.mV[VGREEN];
+    mV[VBLUE] = vec.mV[VBLUE];
+    mV[VALPHA] = a;
     return (*this);
 }
 
@@ -257,45 +257,45 @@ void LLColor4::setValue(const LLSD& sd)
 
 const LLColor4& LLColor4::operator=(const LLColor3 &a)
 {
-    mV[VX] = a.mV[VX];
-    mV[VY] = a.mV[VY];
-    mV[VZ] = a.mV[VZ];
+    mV[VRED] = a.mV[VRED];
+    mV[VGREEN] = a.mV[VGREEN];
+    mV[VBLUE] = a.mV[VBLUE];
 
 // converting from an rgb sets a=1 (opaque)
-    mV[VW] = 1.f;
+    mV[VALPHA] = 1.f;
     return (*this);
 }
 
 
 std::ostream& operator<<(std::ostream& s, const LLColor4 &a)
 {
-    s << "{ " << a.mV[VX] << ", " << a.mV[VY] << ", " << a.mV[VZ] << ", " << a.mV[VW] << " }";
+    s << "{ " << a.mV[VRED] << ", " << a.mV[VGREEN] << ", " << a.mV[VBLUE] << ", " << a.mV[VALPHA] << " }";
     return s;
 }
 
 bool operator==(const LLColor4 &a, const LLColor3 &b)
 {
-    return (  (a.mV[VX] == b.mV[VX])
-            &&(a.mV[VY] == b.mV[VY])
-            &&(a.mV[VZ] == b.mV[VZ]));
+    return (  (a.mV[VRED] == b.mV[VRED])
+            &&(a.mV[VGREEN] == b.mV[VGREEN])
+            &&(a.mV[VBLUE] == b.mV[VBLUE]));
 }
 
 bool operator!=(const LLColor4 &a, const LLColor3 &b)
 {
-    return (  (a.mV[VX] != b.mV[VX])
-            ||(a.mV[VY] != b.mV[VY])
-            ||(a.mV[VZ] != b.mV[VZ]));
+    return (  (a.mV[VRED] != b.mV[VRED])
+            ||(a.mV[VGREEN] != b.mV[VGREEN])
+            ||(a.mV[VBLUE] != b.mV[VBLUE]));
 }
 
 LLColor3    vec4to3(const LLColor4 &vec)
 {
-    LLColor3    temp(vec.mV[VX], vec.mV[VY], vec.mV[VZ]);
+    LLColor3    temp(vec.mV[VRED], vec.mV[VGREEN], vec.mV[VBLUE]);
     return temp;
 }
 
 LLColor4    vec3to4(const LLColor3 &vec)
 {
-    LLColor3    temp(vec.mV[VX], vec.mV[VY], vec.mV[VZ]);
+    LLColor3    temp(vec.mV[VRED], vec.mV[VGREEN], vec.mV[VBLUE]);
     return temp;
 }
 
@@ -385,18 +385,18 @@ void LLColor4::calcHSL(F32* hue, F32* saturation, F32* luminance) const
 }
 
 // static
-BOOL LLColor4::parseColor(const std::string& buf, LLColor4* color)
+bool LLColor4::parseColor(const std::string& buf, LLColor4* color)
 {
-    if( buf.empty() || color == NULL)
+    if( buf.empty() || color == nullptr)
     {
-        return FALSE;
+        return false;
     }
 
     boost_tokenizer tokens(buf, boost::char_separator<char>(", "));
     boost_tokenizer::iterator token_iter = tokens.begin();
     if (token_iter == tokens.end())
     {
-        return FALSE;
+        return false;
     }
 
     // Grab the first token into a string, since we don't know
@@ -408,10 +408,10 @@ BOOL LLColor4::parseColor(const std::string& buf, LLColor4* color)
     {
         // There are more tokens to read.  This must be a vector.
         LLColor4 v;
-        LLStringUtil::convertToF32( color_name,  v.mV[VX] );
-        LLStringUtil::convertToF32( *token_iter, v.mV[VY] );
-        v.mV[VZ] = 0.0f;
-        v.mV[VW] = 1.0f;
+        LLStringUtil::convertToF32( color_name,  v.mV[VRED] );
+        LLStringUtil::convertToF32( *token_iter, v.mV[VGREEN] );
+        v.mV[VBLUE] = 0.0f;
+        v.mV[VALPHA] = 1.0f;
 
         ++token_iter;
         if (token_iter == tokens.end())
@@ -422,18 +422,18 @@ BOOL LLColor4::parseColor(const std::string& buf, LLColor4* color)
         else
         {
             // There is a z-component.
-            LLStringUtil::convertToF32( *token_iter, v.mV[VZ] );
+            LLStringUtil::convertToF32( *token_iter, v.mV[VBLUE] );
 
             ++token_iter;
             if (token_iter != tokens.end())
             {
                 // There is an alpha component.
-                LLStringUtil::convertToF32( *token_iter, v.mV[VW] );
+                LLStringUtil::convertToF32( *token_iter, v.mV[VALPHA] );
             }
         }
 
         //  Make sure all values are between 0 and 1.
-        if (v.mV[VX] > 1.f || v.mV[VY] > 1.f || v.mV[VZ] > 1.f || v.mV[VW] > 1.f)
+        if (v.mV[VRED] > 1.f || v.mV[VGREEN] > 1.f || v.mV[VBLUE] > 1.f || v.mV[VALPHA] > 1.f)
         {
             v = v * (1.f / 255.f);
         }
@@ -708,15 +708,15 @@ BOOL LLColor4::parseColor(const std::string& buf, LLColor4* color)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 // static
-BOOL LLColor4::parseColor4(const std::string& buf, LLColor4* value)
+bool LLColor4::parseColor4(const std::string& buf, LLColor4* value)
 {
-    if( buf.empty() || value == NULL)
+    if( buf.empty() || value == nullptr)
     {
-        return FALSE;
+        return false;
     }
 
     LLColor4 v;
@@ -729,10 +729,10 @@ BOOL LLColor4::parseColor4(const std::string& buf, LLColor4* value)
     if( 4 == count )
     {
         value->setVec( v );
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 // EOF
diff --git a/indra/llmath/v4color.h b/indra/llmath/v4color.h
index 3168c8b43a..e9bb6a07ba 100644
--- a/indra/llmath/v4color.h
+++ b/indra/llmath/v4color.h
@@ -111,7 +111,7 @@ class LLColor4
         F32         lengthSquared() const;      // Returns magnitude squared of LLColor4
         F32         normalize();                // deprecated -- use normalize()
 
-        BOOL        isOpaque() { return mV[VALPHA] == 1.f; }
+        bool        isOpaque() { return mV[VALPHA] == 1.f; }
 
         F32 operator[](int idx) const { return mV[idx]; }
         F32 &operator[](int idx) { return mV[idx]; }
@@ -226,8 +226,8 @@ class LLColor4
         static LLColor4 cyan5;
         static LLColor4 cyan6;
 
-        static BOOL parseColor(const std::string& buf, LLColor4* color);
-        static BOOL parseColor4(const std::string& buf, LLColor4* color);
+        static bool parseColor(const std::string& buf, LLColor4* color);
+        static bool parseColor4(const std::string& buf, LLColor4* color);
 
         inline void clamp();
 };
@@ -242,10 +242,10 @@ LLColor4 lerp(const LLColor4 &a, const LLColor4 &b, F32 u);
 
 inline LLColor4::LLColor4(void)
 {
-    mV[VX] = 0.f;
-    mV[VY] = 0.f;
-    mV[VZ] = 0.f;
-    mV[VW] = 1.f;
+    mV[VRED] = 0.f;
+    mV[VGREEN] = 0.f;
+    mV[VBLUE] = 0.f;
+    mV[VALPHA] = 1.f;
 }
 
 inline LLColor4::LLColor4(const LLSD& sd)
@@ -255,113 +255,113 @@ inline LLColor4::LLColor4(const LLSD& sd)
 
 inline LLColor4::LLColor4(F32 r, F32 g, F32 b)
 {
-    mV[VX] = r;
-    mV[VY] = g;
-    mV[VZ] = b;
-    mV[VW] = 1.f;
+    mV[VRED] = r;
+    mV[VGREEN] = g;
+    mV[VBLUE] = b;
+    mV[VALPHA] = 1.f;
 }
 
 inline LLColor4::LLColor4(F32 r, F32 g, F32 b, F32 a)
 {
-    mV[VX] = r;
-    mV[VY] = g;
-    mV[VZ] = b;
-    mV[VW] = a;
+    mV[VRED] = r;
+    mV[VGREEN] = g;
+    mV[VBLUE] = b;
+    mV[VALPHA] = a;
 }
 
 inline LLColor4::LLColor4(U32 clr)
 {
-    mV[VX] = (clr&0xff) * (1.0f/255.0f);
-    mV[VY] = ((clr>>8)&0xff) * (1.0f/255.0f);
-    mV[VZ] = ((clr>>16)&0xff) * (1.0f/255.0f);
-    mV[VW] = (clr>>24) * (1.0f/255.0f);
+    mV[VRED] = (clr&0xff) * (1.0f/255.0f);
+    mV[VGREEN] = ((clr>>8)&0xff) * (1.0f/255.0f);
+    mV[VBLUE] = ((clr>>16)&0xff) * (1.0f/255.0f);
+    mV[VALPHA] = (clr>>24) * (1.0f/255.0f);
 }
 
 
 inline LLColor4::LLColor4(const F32 *vec)
 {
-    mV[VX] = vec[VX];
-    mV[VY] = vec[VY];
-    mV[VZ] = vec[VZ];
-    mV[VW] = vec[VW];
+    mV[VRED] = vec[VRED];
+    mV[VGREEN] = vec[VGREEN];
+    mV[VBLUE] = vec[VBLUE];
+    mV[VALPHA] = vec[VALPHA];
 }
 
 inline const LLColor4&  LLColor4::setToBlack(void)
 {
-    mV[VX] = 0.f;
-    mV[VY] = 0.f;
-    mV[VZ] = 0.f;
-    mV[VW] = 1.f;
+    mV[VRED] = 0.f;
+    mV[VGREEN] = 0.f;
+    mV[VBLUE] = 0.f;
+    mV[VALPHA] = 1.f;
     return (*this);
 }
 
 inline const LLColor4&  LLColor4::setToWhite(void)
 {
-    mV[VX] = 1.f;
-    mV[VY] = 1.f;
-    mV[VZ] = 1.f;
-    mV[VW] = 1.f;
+    mV[VRED] = 1.f;
+    mV[VGREEN] = 1.f;
+    mV[VBLUE] = 1.f;
+    mV[VALPHA] = 1.f;
     return (*this);
 }
 
 inline const LLColor4&  LLColor4::set(F32 x, F32 y, F32 z)
 {
-    mV[VX] = x;
-    mV[VY] = y;
-    mV[VZ] = z;
+    mV[VRED] = x;
+    mV[VGREEN] = y;
+    mV[VBLUE] = z;
 
 //  no change to alpha!
-//  mV[VW] = 1.f;
+//  mV[VALPHA] = 1.f;
 
     return (*this);
 }
 
 inline const LLColor4&  LLColor4::set(F32 x, F32 y, F32 z, F32 a)
 {
-    mV[VX] = x;
-    mV[VY] = y;
-    mV[VZ] = z;
-    mV[VW] = a;
+    mV[VRED] = x;
+    mV[VGREEN] = y;
+    mV[VBLUE] = z;
+    mV[VALPHA] = a;
     return (*this);
 }
 
 inline const LLColor4&  LLColor4::set(const LLColor4 &vec)
 {
-    mV[VX] = vec.mV[VX];
-    mV[VY] = vec.mV[VY];
-    mV[VZ] = vec.mV[VZ];
-    mV[VW] = vec.mV[VW];
+    mV[VRED] = vec.mV[VRED];
+    mV[VGREEN] = vec.mV[VGREEN];
+    mV[VBLUE] = vec.mV[VBLUE];
+    mV[VALPHA] = vec.mV[VALPHA];
     return (*this);
 }
 
 
 inline const LLColor4&  LLColor4::set(const F32 *vec)
 {
-    mV[VX] = vec[VX];
-    mV[VY] = vec[VY];
-    mV[VZ] = vec[VZ];
-    mV[VW] = vec[VW];
+    mV[VRED] = vec[VRED];
+    mV[VGREEN] = vec[VGREEN];
+    mV[VBLUE] = vec[VBLUE];
+    mV[VALPHA] = vec[VALPHA];
     return (*this);
 }
 
 inline const LLColor4&  LLColor4::set(const F64 *vec)
 {
-    mV[VX] = static_cast<F32>(vec[VX]);
-    mV[VY] = static_cast<F32>(vec[VY]);
-    mV[VZ] = static_cast<F32>(vec[VZ]);
-    mV[VW] = static_cast<F32>(vec[VW]);
+    mV[VRED] = static_cast<F32>(vec[VRED]);
+    mV[VGREEN] = static_cast<F32>(vec[VGREEN]);
+    mV[VBLUE] = static_cast<F32>(vec[VBLUE]);
+    mV[VALPHA] = static_cast<F32>(vec[VALPHA]);
     return (*this);
 }
 
 // deprecated
 inline const LLColor4&  LLColor4::setVec(F32 x, F32 y, F32 z)
 {
-    mV[VX] = x;
-    mV[VY] = y;
-    mV[VZ] = z;
+    mV[VRED] = x;
+    mV[VGREEN] = y;
+    mV[VBLUE] = z;
 
 //  no change to alpha!
-//  mV[VW] = 1.f;
+//  mV[VALPHA] = 1.f;
 
     return (*this);
 }
@@ -369,20 +369,20 @@ inline const LLColor4&  LLColor4::setVec(F32 x, F32 y, F32 z)
 // deprecated
 inline const LLColor4&  LLColor4::setVec(F32 x, F32 y, F32 z, F32 a)
 {
-    mV[VX] = x;
-    mV[VY] = y;
-    mV[VZ] = z;
-    mV[VW] = a;
+    mV[VRED] = x;
+    mV[VGREEN] = y;
+    mV[VBLUE] = z;
+    mV[VALPHA] = a;
     return (*this);
 }
 
 // deprecated
 inline const LLColor4&  LLColor4::setVec(const LLColor4 &vec)
 {
-    mV[VX] = vec.mV[VX];
-    mV[VY] = vec.mV[VY];
-    mV[VZ] = vec.mV[VZ];
-    mV[VW] = vec.mV[VW];
+    mV[VRED] = vec.mV[VRED];
+    mV[VGREEN] = vec.mV[VGREEN];
+    mV[VBLUE] = vec.mV[VBLUE];
+    mV[VALPHA] = vec.mV[VALPHA];
     return (*this);
 }
 
@@ -390,16 +390,16 @@ inline const LLColor4&  LLColor4::setVec(const LLColor4 &vec)
 // deprecated
 inline const LLColor4&  LLColor4::setVec(const F32 *vec)
 {
-    mV[VX] = vec[VX];
-    mV[VY] = vec[VY];
-    mV[VZ] = vec[VZ];
-    mV[VW] = vec[VW];
+    mV[VRED] = vec[VRED];
+    mV[VGREEN] = vec[VGREEN];
+    mV[VBLUE] = vec[VBLUE];
+    mV[VALPHA] = vec[VALPHA];
     return (*this);
 }
 
 inline const LLColor4&  LLColor4::setAlpha(F32 a)
 {
-    mV[VW] = a;
+    mV[VALPHA] = a;
     return (*this);
 }
 
@@ -407,25 +407,25 @@ inline const LLColor4&  LLColor4::setAlpha(F32 a)
 
 inline F32      LLColor4::length(void) const
 {
-    return (F32) sqrt(mV[VX]*mV[VX] + mV[VY]*mV[VY] + mV[VZ]*mV[VZ]);
+    return (F32) sqrt(mV[VRED]*mV[VRED] + mV[VGREEN]*mV[VGREEN] + mV[VBLUE]*mV[VBLUE]);
 }
 
 inline F32      LLColor4::lengthSquared(void) const
 {
-    return mV[VX]*mV[VX] + mV[VY]*mV[VY] + mV[VZ]*mV[VZ];
+    return mV[VRED]*mV[VRED] + mV[VGREEN]*mV[VGREEN] + mV[VBLUE]*mV[VBLUE];
 }
 
 inline F32      LLColor4::normalize(void)
 {
-    F32 mag = (F32) sqrt(mV[VX]*mV[VX] + mV[VY]*mV[VY] + mV[VZ]*mV[VZ]);
+    F32 mag = (F32) sqrt(mV[VRED]*mV[VRED] + mV[VGREEN]*mV[VGREEN] + mV[VBLUE]*mV[VBLUE]);
     F32 oomag;
 
     if (mag)
     {
         oomag = 1.f/mag;
-        mV[VX] *= oomag;
-        mV[VY] *= oomag;
-        mV[VZ] *= oomag;
+        mV[VRED] *= oomag;
+        mV[VGREEN] *= oomag;
+        mV[VBLUE] *= oomag;
     }
     return (mag);
 }
@@ -433,27 +433,27 @@ inline F32      LLColor4::normalize(void)
 // deprecated
 inline F32      LLColor4::magVec(void) const
 {
-    return (F32) sqrt(mV[VX]*mV[VX] + mV[VY]*mV[VY] + mV[VZ]*mV[VZ]);
+    return (F32) sqrt(mV[VRED]*mV[VRED] + mV[VGREEN]*mV[VGREEN] + mV[VBLUE]*mV[VBLUE]);
 }
 
 // deprecated
 inline F32      LLColor4::magVecSquared(void) const
 {
-    return mV[VX]*mV[VX] + mV[VY]*mV[VY] + mV[VZ]*mV[VZ];
+    return mV[VRED]*mV[VRED] + mV[VGREEN]*mV[VGREEN] + mV[VBLUE]*mV[VBLUE];
 }
 
 // deprecated
 inline F32      LLColor4::normVec(void)
 {
-    F32 mag = (F32) sqrt(mV[VX]*mV[VX] + mV[VY]*mV[VY] + mV[VZ]*mV[VZ]);
+    F32 mag = (F32) sqrt(mV[VRED]*mV[VRED] + mV[VGREEN]*mV[VGREEN] + mV[VBLUE]*mV[VBLUE]);
     F32 oomag;
 
     if (mag)
     {
         oomag = 1.f/mag;
-        mV[VX] *= oomag;
-        mV[VY] *= oomag;
-        mV[VZ] *= oomag;
+        mV[VRED] *= oomag;
+        mV[VGREEN] *= oomag;
+        mV[VBLUE] *= oomag;
     }
     return (mag);
 }
@@ -464,135 +464,135 @@ inline F32      LLColor4::normVec(void)
 inline LLColor4 operator+(const LLColor4 &a, const LLColor4 &b)
 {
     return LLColor4(
-        a.mV[VX] + b.mV[VX],
-        a.mV[VY] + b.mV[VY],
-        a.mV[VZ] + b.mV[VZ],
-        a.mV[VW] + b.mV[VW]);
+        a.mV[VRED] + b.mV[VRED],
+        a.mV[VGREEN] + b.mV[VGREEN],
+        a.mV[VBLUE] + b.mV[VBLUE],
+        a.mV[VALPHA] + b.mV[VALPHA]);
 }
 
 inline LLColor4 operator-(const LLColor4 &a, const LLColor4 &b)
 {
     return LLColor4(
-        a.mV[VX] - b.mV[VX],
-        a.mV[VY] - b.mV[VY],
-        a.mV[VZ] - b.mV[VZ],
-        a.mV[VW] - b.mV[VW]);
+        a.mV[VRED] - b.mV[VRED],
+        a.mV[VGREEN] - b.mV[VGREEN],
+        a.mV[VBLUE] - b.mV[VBLUE],
+        a.mV[VALPHA] - b.mV[VALPHA]);
 }
 
 inline LLColor4  operator*(const LLColor4 &a, const LLColor4 &b)
 {
     return LLColor4(
-        a.mV[VX] * b.mV[VX],
-        a.mV[VY] * b.mV[VY],
-        a.mV[VZ] * b.mV[VZ],
-        a.mV[VW] * b.mV[VW]);
+        a.mV[VRED] * b.mV[VRED],
+        a.mV[VGREEN] * b.mV[VGREEN],
+        a.mV[VBLUE] * b.mV[VBLUE],
+        a.mV[VALPHA] * b.mV[VALPHA]);
 }
 
 inline LLColor4 operator*(const LLColor4 &a, F32 k)
 {
     // only affects rgb (not a!)
     return LLColor4(
-        a.mV[VX] * k,
-        a.mV[VY] * k,
-        a.mV[VZ] * k,
-        a.mV[VW]);
+        a.mV[VRED] * k,
+        a.mV[VGREEN] * k,
+        a.mV[VBLUE] * k,
+        a.mV[VALPHA]);
 }
 
 inline LLColor4 operator/(const LLColor4 &a, F32 k)
 {
     return LLColor4(
-        a.mV[VX] / k,
-        a.mV[VY] / k,
-        a.mV[VZ] / k,
-        a.mV[VW]);
+        a.mV[VRED] / k,
+        a.mV[VGREEN] / k,
+        a.mV[VBLUE] / k,
+        a.mV[VALPHA]);
 }
 
 inline LLColor4 operator*(F32 k, const LLColor4 &a)
 {
     // only affects rgb (not a!)
     return LLColor4(
-        a.mV[VX] * k,
-        a.mV[VY] * k,
-        a.mV[VZ] * k,
-        a.mV[VW]);
+        a.mV[VRED] * k,
+        a.mV[VGREEN] * k,
+        a.mV[VBLUE] * k,
+        a.mV[VALPHA]);
 }
 
 inline LLColor4 operator%(F32 k, const LLColor4 &a)
 {
     // only affects alpha (not rgb!)
     return LLColor4(
-        a.mV[VX],
-        a.mV[VY],
-        a.mV[VZ],
-        a.mV[VW] * k);
+        a.mV[VRED],
+        a.mV[VGREEN],
+        a.mV[VBLUE],
+        a.mV[VALPHA] * k);
 }
 
 inline LLColor4 operator%(const LLColor4 &a, F32 k)
 {
     // only affects alpha (not rgb!)
     return LLColor4(
-        a.mV[VX],
-        a.mV[VY],
-        a.mV[VZ],
-        a.mV[VW] * k);
+        a.mV[VRED],
+        a.mV[VGREEN],
+        a.mV[VBLUE],
+        a.mV[VALPHA] * k);
 }
 
 inline bool operator==(const LLColor4 &a, const LLColor4 &b)
 {
-    return (  (a.mV[VX] == b.mV[VX])
-            &&(a.mV[VY] == b.mV[VY])
-            &&(a.mV[VZ] == b.mV[VZ])
-            &&(a.mV[VW] == b.mV[VW]));
+    return (  (a.mV[VRED] == b.mV[VRED])
+            &&(a.mV[VGREEN] == b.mV[VGREEN])
+            &&(a.mV[VBLUE] == b.mV[VBLUE])
+            &&(a.mV[VALPHA] == b.mV[VALPHA]));
 }
 
 inline bool operator!=(const LLColor4 &a, const LLColor4 &b)
 {
-    return (  (a.mV[VX] != b.mV[VX])
-            ||(a.mV[VY] != b.mV[VY])
-            ||(a.mV[VZ] != b.mV[VZ])
-            ||(a.mV[VW] != b.mV[VW]));
+    return (  (a.mV[VRED] != b.mV[VRED])
+            ||(a.mV[VGREEN] != b.mV[VGREEN])
+            ||(a.mV[VBLUE] != b.mV[VBLUE])
+            ||(a.mV[VALPHA] != b.mV[VALPHA]));
 }
 
 inline const LLColor4& operator+=(LLColor4 &a, const LLColor4 &b)
 {
-    a.mV[VX] += b.mV[VX];
-    a.mV[VY] += b.mV[VY];
-    a.mV[VZ] += b.mV[VZ];
-    a.mV[VW] += b.mV[VW];
+    a.mV[VRED] += b.mV[VRED];
+    a.mV[VGREEN] += b.mV[VGREEN];
+    a.mV[VBLUE] += b.mV[VBLUE];
+    a.mV[VALPHA] += b.mV[VALPHA];
     return a;
 }
 
 inline const LLColor4& operator-=(LLColor4 &a, const LLColor4 &b)
 {
-    a.mV[VX] -= b.mV[VX];
-    a.mV[VY] -= b.mV[VY];
-    a.mV[VZ] -= b.mV[VZ];
-    a.mV[VW] -= b.mV[VW];
+    a.mV[VRED] -= b.mV[VRED];
+    a.mV[VGREEN] -= b.mV[VGREEN];
+    a.mV[VBLUE] -= b.mV[VBLUE];
+    a.mV[VALPHA] -= b.mV[VALPHA];
     return a;
 }
 
 inline const LLColor4& operator*=(LLColor4 &a, F32 k)
 {
     // only affects rgb (not a!)
-    a.mV[VX] *= k;
-    a.mV[VY] *= k;
-    a.mV[VZ] *= k;
+    a.mV[VRED] *= k;
+    a.mV[VGREEN] *= k;
+    a.mV[VBLUE] *= k;
     return a;
 }
 
 inline const LLColor4& operator *=(LLColor4 &a, const LLColor4 &b)
 {
-    a.mV[VX] *= b.mV[VX];
-    a.mV[VY] *= b.mV[VY];
-    a.mV[VZ] *= b.mV[VZ];
-//  a.mV[VW] *= b.mV[VW];
+    a.mV[VRED] *= b.mV[VRED];
+    a.mV[VGREEN] *= b.mV[VGREEN];
+    a.mV[VBLUE] *= b.mV[VBLUE];
+//  a.mV[VALPHA] *= b.mV[VALPHA];
     return a;
 }
 
 inline const LLColor4& operator%=(LLColor4 &a, F32 k)
 {
     // only affects alpha (not rgb!)
-    a.mV[VW] *= k;
+    a.mV[VALPHA] *= k;
     return a;
 }
 
@@ -614,10 +614,10 @@ inline F32      distVec_squared(const LLColor4 &a, const LLColor4 &b)
 inline LLColor4 lerp(const LLColor4 &a, const LLColor4 &b, F32 u)
 {
     return LLColor4(
-        a.mV[VX] + (b.mV[VX] - a.mV[VX]) * u,
-        a.mV[VY] + (b.mV[VY] - a.mV[VY]) * u,
-        a.mV[VZ] + (b.mV[VZ] - a.mV[VZ]) * u,
-        a.mV[VW] + (b.mV[VW] - a.mV[VW]) * u);
+        a.mV[VRED] + (b.mV[VRED] - a.mV[VRED]) * u,
+        a.mV[VGREEN] + (b.mV[VGREEN] - a.mV[VGREEN]) * u,
+        a.mV[VBLUE] + (b.mV[VBLUE] - a.mV[VBLUE]) * u,
+        a.mV[VALPHA] + (b.mV[VALPHA] - a.mV[VALPHA]) * u);
 }
 
 inline bool LLColor4::operator<(const LLColor4& rhs) const
diff --git a/indra/llmath/v4coloru.cpp b/indra/llmath/v4coloru.cpp
index 92127933b2..acf349245a 100644
--- a/indra/llmath/v4coloru.cpp
+++ b/indra/llmath/v4coloru.cpp
@@ -53,10 +53,10 @@ LLColor4U::operator LLColor4()
 /*
 LLColor4U::LLColor4U(const LLColor3 &vec)
 {
-    mV[VX] = vec.mV[VX];
-    mV[VY] = vec.mV[VY];
-    mV[VZ] = vec.mV[VZ];
-    mV[VW] = 255;
+    mV[VRED] = vec.mV[VRED];
+    mV[VGREEN] = vec.mV[VGREEN];
+    mV[VBLUE] = vec.mV[VBLUE];
+    mV[VALPHA] = 255;
 }
 */
 
@@ -70,12 +70,12 @@ LLColor4U::LLColor4U(const LLColor3 &vec)
 /*
 LLColor4U LLColor4U::operator=(const LLColor3 &a)
 {
-    mV[VX] = a.mV[VX];
-    mV[VY] = a.mV[VY];
-    mV[VZ] = a.mV[VZ];
+    mV[VRED] = a.mV[VRED];
+    mV[VGREEN] = a.mV[VGREEN];
+    mV[VBLUE] = a.mV[VBLUE];
 
 // converting from an rgb sets a=1 (opaque)
-    mV[VW] = 255;
+    mV[VALPHA] = 255;
     return (*this);
 }
 */
@@ -83,16 +83,16 @@ LLColor4U LLColor4U::operator=(const LLColor3 &a)
 
 std::ostream& operator<<(std::ostream& s, const LLColor4U &a)
 {
-    s << "{ " << (S32)a.mV[VX] << ", " << (S32)a.mV[VY] << ", " << (S32)a.mV[VZ] << ", " << (S32)a.mV[VW] << " }";
+    s << "{ " << (S32)a.mV[VRED] << ", " << (S32)a.mV[VGREEN] << ", " << (S32)a.mV[VBLUE] << ", " << (S32)a.mV[VALPHA] << " }";
     return s;
 }
 
 // static
-BOOL LLColor4U::parseColor4U(const std::string& buf, LLColor4U* value)
+bool LLColor4U::parseColor4U(const std::string& buf, LLColor4U* value)
 {
-    if( buf.empty() || value == NULL)
+    if( buf.empty() || value == nullptr)
     {
-        return FALSE;
+        return false;
     }
 
     U32 v[4];
@@ -104,17 +104,17 @@ BOOL LLColor4U::parseColor4U(const std::string& buf, LLColor4U* value)
     }
     if( 4 != count )
     {
-        return FALSE;
+        return false;
     }
 
     for( S32 i = 0; i < 4; i++ )
     {
         if( v[i] > U8_MAX )
         {
-            return FALSE;
+            return false;
         }
     }
 
     value->set( U8(v[0]), U8(v[1]), U8(v[2]), U8(v[3]) );
-    return TRUE;
+    return true;
 }
diff --git a/indra/llmath/v4coloru.h b/indra/llmath/v4coloru.h
index ecfecc167f..29128a08a7 100644
--- a/indra/llmath/v4coloru.h
+++ b/indra/llmath/v4coloru.h
@@ -112,12 +112,11 @@ public:
     LLColor4U addClampMax(const LLColor4U &color);                      // Add and clamp the max
 
     LLColor4U multAll(const F32 k);                                     // Multiply ALL channels by scalar k
-    const LLColor4U& combine();
 
     inline void setVecScaleClamp(const LLColor3 &color);
     inline void setVecScaleClamp(const LLColor4 &color);
 
-    static BOOL parseColor4U(const std::string& buf, LLColor4U* value);
+    static bool parseColor4U(const std::string& buf, LLColor4U* value);
 
     // conversion
     operator LLColor4() const
@@ -143,34 +142,34 @@ F32     distVec_squared(const LLColor4U &a, const LLColor4U &b);    // Returns d
 
 inline LLColor4U::LLColor4U()
 {
-    mV[VX] = 0;
-    mV[VY] = 0;
-    mV[VZ] = 0;
-    mV[VW] = 255;
+    mV[VRED] = 0;
+    mV[VGREEN] = 0;
+    mV[VBLUE] = 0;
+    mV[VALPHA] = 255;
 }
 
 inline LLColor4U::LLColor4U(U8 r, U8 g, U8 b)
 {
-    mV[VX] = r;
-    mV[VY] = g;
-    mV[VZ] = b;
-    mV[VW] = 255;
+    mV[VRED] = r;
+    mV[VGREEN] = g;
+    mV[VBLUE] = b;
+    mV[VALPHA] = 255;
 }
 
 inline LLColor4U::LLColor4U(U8 r, U8 g, U8 b, U8 a)
 {
-    mV[VX] = r;
-    mV[VY] = g;
-    mV[VZ] = b;
-    mV[VW] = a;
+    mV[VRED] = r;
+    mV[VGREEN] = g;
+    mV[VBLUE] = b;
+    mV[VALPHA] = a;
 }
 
 inline LLColor4U::LLColor4U(const U8 *vec)
 {
-    mV[VX] = vec[VX];
-    mV[VY] = vec[VY];
-    mV[VZ] = vec[VZ];
-    mV[VW] = vec[VW];
+    mV[VRED] = vec[VRED];
+    mV[VGREEN] = vec[VGREEN];
+    mV[VBLUE] = vec[VBLUE];
+    mV[VALPHA] = vec[VALPHA];
 }
 
 /*
@@ -182,30 +181,30 @@ inline LLColor4U::operator LLColor4()
 
 inline const LLColor4U& LLColor4U::setToBlack(void)
 {
-    mV[VX] = 0;
-    mV[VY] = 0;
-    mV[VZ] = 0;
-    mV[VW] = 255;
+    mV[VRED] = 0;
+    mV[VGREEN] = 0;
+    mV[VBLUE] = 0;
+    mV[VALPHA] = 255;
     return (*this);
 }
 
 inline const LLColor4U& LLColor4U::setToWhite(void)
 {
-    mV[VX] = 255;
-    mV[VY] = 255;
-    mV[VZ] = 255;
-    mV[VW] = 255;
+    mV[VRED] = 255;
+    mV[VGREEN] = 255;
+    mV[VBLUE] = 255;
+    mV[VALPHA] = 255;
     return (*this);
 }
 
 inline const LLColor4U& LLColor4U::set(const U8 x, const U8 y, const U8 z)
 {
-    mV[VX] = x;
-    mV[VY] = y;
-    mV[VZ] = z;
+    mV[VRED] = x;
+    mV[VGREEN] = y;
+    mV[VBLUE] = z;
 
 //  no change to alpha!
-//  mV[VW] = 255;
+//  mV[VALPHA] = 255;
 
     return (*this);
 }
@@ -221,31 +220,31 @@ inline const LLColor4U& LLColor4U::set(const U8 r, const U8 g, const U8 b, U8 a)
 
 inline const LLColor4U& LLColor4U::set(const LLColor4U &vec)
 {
-    mV[VX] = vec.mV[VX];
-    mV[VY] = vec.mV[VY];
-    mV[VZ] = vec.mV[VZ];
-    mV[VW] = vec.mV[VW];
+    mV[VRED] = vec.mV[VRED];
+    mV[VGREEN] = vec.mV[VGREEN];
+    mV[VBLUE] = vec.mV[VBLUE];
+    mV[VALPHA] = vec.mV[VALPHA];
     return (*this);
 }
 
 inline const LLColor4U& LLColor4U::set(const U8 *vec)
 {
-    mV[VX] = vec[VX];
-    mV[VY] = vec[VY];
-    mV[VZ] = vec[VZ];
-    mV[VW] = vec[VW];
+    mV[VRED] = vec[VRED];
+    mV[VGREEN] = vec[VGREEN];
+    mV[VBLUE] = vec[VBLUE];
+    mV[VALPHA] = vec[VALPHA];
     return (*this);
 }
 
 // deprecated
 inline const LLColor4U& LLColor4U::setVec(const U8 x, const U8 y, const U8 z)
 {
-    mV[VX] = x;
-    mV[VY] = y;
-    mV[VZ] = z;
+    mV[VRED] = x;
+    mV[VGREEN] = y;
+    mV[VBLUE] = z;
 
 //  no change to alpha!
-//  mV[VW] = 255;
+//  mV[VALPHA] = 255;
 
     return (*this);
 }
@@ -263,26 +262,26 @@ inline const LLColor4U& LLColor4U::setVec(const U8 r, const U8 g, const U8 b, U8
 // deprecated
 inline const LLColor4U& LLColor4U::setVec(const LLColor4U &vec)
 {
-    mV[VX] = vec.mV[VX];
-    mV[VY] = vec.mV[VY];
-    mV[VZ] = vec.mV[VZ];
-    mV[VW] = vec.mV[VW];
+    mV[VRED] = vec.mV[VRED];
+    mV[VGREEN] = vec.mV[VGREEN];
+    mV[VBLUE] = vec.mV[VBLUE];
+    mV[VALPHA] = vec.mV[VALPHA];
     return (*this);
 }
 
 // deprecated
 inline const LLColor4U& LLColor4U::setVec(const U8 *vec)
 {
-    mV[VX] = vec[VX];
-    mV[VY] = vec[VY];
-    mV[VZ] = vec[VZ];
-    mV[VW] = vec[VW];
+    mV[VRED] = vec[VRED];
+    mV[VGREEN] = vec[VGREEN];
+    mV[VBLUE] = vec[VBLUE];
+    mV[VALPHA] = vec[VALPHA];
     return (*this);
 }
 
 inline const LLColor4U& LLColor4U::setAlpha(U8 a)
 {
-    mV[VW] = a;
+    mV[VALPHA] = a;
     return (*this);
 }
 
@@ -290,159 +289,159 @@ inline const LLColor4U& LLColor4U::setAlpha(U8 a)
 
 inline F32      LLColor4U::length(void) const
 {
-    return (F32) sqrt( ((F32)mV[VX]) * mV[VX] + ((F32)mV[VY]) * mV[VY] + ((F32)mV[VZ]) * mV[VZ] );
+    return (F32) sqrt( ((F32)mV[VRED]) * mV[VRED] + ((F32)mV[VGREEN]) * mV[VGREEN] + ((F32)mV[VBLUE]) * mV[VBLUE] );
 }
 
 inline F32      LLColor4U::lengthSquared(void) const
 {
-    return ((F32)mV[VX]) * mV[VX] + ((F32)mV[VY]) * mV[VY] + ((F32)mV[VZ]) * mV[VZ];
+    return ((F32)mV[VRED]) * mV[VRED] + ((F32)mV[VGREEN]) * mV[VGREEN] + ((F32)mV[VBLUE]) * mV[VBLUE];
 }
 
 // deprecated
 inline F32      LLColor4U::magVec(void) const
 {
-    return (F32) sqrt( ((F32)mV[VX]) * mV[VX] + ((F32)mV[VY]) * mV[VY] + ((F32)mV[VZ]) * mV[VZ] );
+    return (F32) sqrt( ((F32)mV[VRED]) * mV[VRED] + ((F32)mV[VGREEN]) * mV[VGREEN] + ((F32)mV[VBLUE]) * mV[VBLUE] );
 }
 
 // deprecated
 inline F32      LLColor4U::magVecSquared(void) const
 {
-    return ((F32)mV[VX]) * mV[VX] + ((F32)mV[VY]) * mV[VY] + ((F32)mV[VZ]) * mV[VZ];
+    return ((F32)mV[VRED]) * mV[VRED] + ((F32)mV[VGREEN]) * mV[VGREEN] + ((F32)mV[VBLUE]) * mV[VBLUE];
 }
 
 inline LLColor4U operator+(const LLColor4U &a, const LLColor4U &b)
 {
     return LLColor4U(
-        a.mV[VX] + b.mV[VX],
-        a.mV[VY] + b.mV[VY],
-        a.mV[VZ] + b.mV[VZ],
-        a.mV[VW] + b.mV[VW]);
+        a.mV[VRED] + b.mV[VRED],
+        a.mV[VGREEN] + b.mV[VGREEN],
+        a.mV[VBLUE] + b.mV[VBLUE],
+        a.mV[VALPHA] + b.mV[VALPHA]);
 }
 
 inline LLColor4U operator-(const LLColor4U &a, const LLColor4U &b)
 {
     return LLColor4U(
-        a.mV[VX] - b.mV[VX],
-        a.mV[VY] - b.mV[VY],
-        a.mV[VZ] - b.mV[VZ],
-        a.mV[VW] - b.mV[VW]);
+        a.mV[VRED] - b.mV[VRED],
+        a.mV[VGREEN] - b.mV[VGREEN],
+        a.mV[VBLUE] - b.mV[VBLUE],
+        a.mV[VALPHA] - b.mV[VALPHA]);
 }
 
 inline LLColor4U  operator*(const LLColor4U &a, const LLColor4U &b)
 {
     return LLColor4U(
-        a.mV[VX] * b.mV[VX],
-        a.mV[VY] * b.mV[VY],
-        a.mV[VZ] * b.mV[VZ],
-        a.mV[VW] * b.mV[VW]);
+        a.mV[VRED] * b.mV[VRED],
+        a.mV[VGREEN] * b.mV[VGREEN],
+        a.mV[VBLUE] * b.mV[VBLUE],
+        a.mV[VALPHA] * b.mV[VALPHA]);
 }
 
 inline LLColor4U LLColor4U::addClampMax(const LLColor4U &color)
 {
-    return LLColor4U(llmin((S32)mV[VX] + color.mV[VX], 255),
-                    llmin((S32)mV[VY] + color.mV[VY], 255),
-                    llmin((S32)mV[VZ] + color.mV[VZ], 255),
-                    llmin((S32)mV[VW] + color.mV[VW], 255));
+    return LLColor4U(llmin((S32)mV[VRED] + color.mV[VRED], 255),
+                    llmin((S32)mV[VGREEN] + color.mV[VGREEN], 255),
+                    llmin((S32)mV[VBLUE] + color.mV[VBLUE], 255),
+                    llmin((S32)mV[VALPHA] + color.mV[VALPHA], 255));
 }
 
 inline LLColor4U LLColor4U::multAll(const F32 k)
 {
     // Round to nearest
     return LLColor4U(
-        (U8)ll_round(mV[VX] * k),
-        (U8)ll_round(mV[VY] * k),
-        (U8)ll_round(mV[VZ] * k),
-        (U8)ll_round(mV[VW] * k));
+        (U8)ll_round(mV[VRED] * k),
+        (U8)ll_round(mV[VGREEN] * k),
+        (U8)ll_round(mV[VBLUE] * k),
+        (U8)ll_round(mV[VALPHA] * k));
 }
 /*
 inline LLColor4U operator*(const LLColor4U &a, U8 k)
 {
     // only affects rgb (not a!)
     return LLColor4U(
-        a.mV[VX] * k,
-        a.mV[VY] * k,
-        a.mV[VZ] * k,
-        a.mV[VW]);
+        a.mV[VRED] * k,
+        a.mV[VGREEN] * k,
+        a.mV[VBLUE] * k,
+        a.mV[VALPHA]);
 }
 
 inline LLColor4U operator*(U8 k, const LLColor4U &a)
 {
     // only affects rgb (not a!)
     return LLColor4U(
-        a.mV[VX] * k,
-        a.mV[VY] * k,
-        a.mV[VZ] * k,
-        a.mV[VW]);
+        a.mV[VRED] * k,
+        a.mV[VGREEN] * k,
+        a.mV[VBLUE] * k,
+        a.mV[VALPHA]);
 }
 
 inline LLColor4U operator%(U8 k, const LLColor4U &a)
 {
     // only affects alpha (not rgb!)
     return LLColor4U(
-        a.mV[VX],
-        a.mV[VY],
-        a.mV[VZ],
-        a.mV[VW] * k );
+        a.mV[VRED],
+        a.mV[VGREEN],
+        a.mV[VBLUE],
+        a.mV[VALPHA] * k );
 }
 
 inline LLColor4U operator%(const LLColor4U &a, U8 k)
 {
     // only affects alpha (not rgb!)
     return LLColor4U(
-        a.mV[VX],
-        a.mV[VY],
-        a.mV[VZ],
-        a.mV[VW] * k );
+        a.mV[VRED],
+        a.mV[VGREEN],
+        a.mV[VBLUE],
+        a.mV[VALPHA] * k );
 }
 */
 
 inline bool operator==(const LLColor4U &a, const LLColor4U &b)
 {
-    return (  (a.mV[VX] == b.mV[VX])
-            &&(a.mV[VY] == b.mV[VY])
-            &&(a.mV[VZ] == b.mV[VZ])
-            &&(a.mV[VW] == b.mV[VW]));
+    return (  (a.mV[VRED] == b.mV[VRED])
+            &&(a.mV[VGREEN] == b.mV[VGREEN])
+            &&(a.mV[VBLUE] == b.mV[VBLUE])
+            &&(a.mV[VALPHA] == b.mV[VALPHA]));
 }
 
 inline bool operator!=(const LLColor4U &a, const LLColor4U &b)
 {
-    return (  (a.mV[VX] != b.mV[VX])
-            ||(a.mV[VY] != b.mV[VY])
-            ||(a.mV[VZ] != b.mV[VZ])
-            ||(a.mV[VW] != b.mV[VW]));
+    return (  (a.mV[VRED] != b.mV[VRED])
+            ||(a.mV[VGREEN] != b.mV[VGREEN])
+            ||(a.mV[VBLUE] != b.mV[VBLUE])
+            ||(a.mV[VALPHA] != b.mV[VALPHA]));
 }
 
 inline const LLColor4U& operator+=(LLColor4U &a, const LLColor4U &b)
 {
-    a.mV[VX] += b.mV[VX];
-    a.mV[VY] += b.mV[VY];
-    a.mV[VZ] += b.mV[VZ];
-    a.mV[VW] += b.mV[VW];
+    a.mV[VRED] += b.mV[VRED];
+    a.mV[VGREEN] += b.mV[VGREEN];
+    a.mV[VBLUE] += b.mV[VBLUE];
+    a.mV[VALPHA] += b.mV[VALPHA];
     return a;
 }
 
 inline const LLColor4U& operator-=(LLColor4U &a, const LLColor4U &b)
 {
-    a.mV[VX] -= b.mV[VX];
-    a.mV[VY] -= b.mV[VY];
-    a.mV[VZ] -= b.mV[VZ];
-    a.mV[VW] -= b.mV[VW];
+    a.mV[VRED] -= b.mV[VRED];
+    a.mV[VGREEN] -= b.mV[VGREEN];
+    a.mV[VBLUE] -= b.mV[VBLUE];
+    a.mV[VALPHA] -= b.mV[VALPHA];
     return a;
 }
 
 inline const LLColor4U& operator*=(LLColor4U &a, U8 k)
 {
     // only affects rgb (not a!)
-    a.mV[VX] *= k;
-    a.mV[VY] *= k;
-    a.mV[VZ] *= k;
+    a.mV[VRED] *= k;
+    a.mV[VGREEN] *= k;
+    a.mV[VBLUE] *= k;
     return a;
 }
 
 inline const LLColor4U& operator%=(LLColor4U &a, U8 k)
 {
     // only affects alpha (not rgb!)
-    a.mV[VW] *= k;
+    a.mV[VALPHA] *= k;
     return a;
 }
 
diff --git a/indra/llmath/v4math.cpp b/indra/llmath/v4math.cpp
index 8955145527..0aa6eb09c3 100644
--- a/indra/llmath/v4math.cpp
+++ b/indra/llmath/v4math.cpp
@@ -36,28 +36,6 @@
 // LLVector4
 
 // Axis-Angle rotations
-
-/*
-const LLVector4&    LLVector4::rotVec(F32 angle, const LLVector4 &vec)
-{
-    if ( !vec.isExactlyZero() && angle )
-    {
-        *this = *this * LLMatrix4(angle, vec);
-    }
-    return *this;
-}
-
-const LLVector4&    LLVector4::rotVec(F32 angle, F32 x, F32 y, F32 z)
-{
-    LLVector3 vec(x, y, z);
-    if ( !vec.isExactlyZero() && angle )
-    {
-        *this = *this * LLMatrix4(angle, vec);
-    }
-    return *this;
-}
-*/
-
 const LLVector4&    LLVector4::rotVec(const LLMatrix4 &mat)
 {
     *this = *this * mat;
@@ -81,15 +59,15 @@ const LLVector4&    LLVector4::scaleVec(const LLVector4& vec)
 }
 
 // Sets all values to absolute value of their original values
-// Returns TRUE if data changed
-BOOL LLVector4::abs()
+// Returns true if data changed
+bool LLVector4::abs()
 {
-    BOOL ret = FALSE;
+    bool ret{ false };
 
-    if (mV[0] < 0.f) { mV[0] = -mV[0]; ret = TRUE; }
-    if (mV[1] < 0.f) { mV[1] = -mV[1]; ret = TRUE; }
-    if (mV[2] < 0.f) { mV[2] = -mV[2]; ret = TRUE; }
-    if (mV[3] < 0.f) { mV[3] = -mV[3]; ret = TRUE; }
+    if (mV[0] < 0.f) { mV[0] = -mV[0]; ret = true; }
+    if (mV[1] < 0.f) { mV[1] = -mV[1]; ret = true; }
+    if (mV[2] < 0.f) { mV[2] = -mV[2]; ret = true; }
+    if (mV[3] < 0.f) { mV[3] = -mV[3]; ret = true; }
 
     return ret;
 }
@@ -117,7 +95,7 @@ F32 angle_between( const LLVector4& a, const LLVector4& b )
     return angle;
 }
 
-BOOL are_parallel(const LLVector4 &a, const LLVector4 &b, F32 epsilon)
+bool are_parallel(const LLVector4 &a, const LLVector4 &b, F32 epsilon)
 {
     LLVector4 an = a;
     LLVector4 bn = b;
@@ -125,8 +103,8 @@ BOOL are_parallel(const LLVector4 &a, const LLVector4 &b, F32 epsilon)
     bn.normalize();
     F32 dot = an * bn;
     if ( (1.0f - fabs(dot)) < epsilon)
-        return TRUE;
-    return FALSE;
+        return true;
+    return false;
 }
 
 
diff --git a/indra/llmath/v4math.h b/indra/llmath/v4math.h
index 7f0020af6b..7ed22212d3 100644
--- a/indra/llmath/v4math.h
+++ b/indra/llmath/v4math.h
@@ -74,7 +74,7 @@ class LLVector4
         }
 
 
-        inline BOOL isFinite() const;                                   // checks to see if all values of LLVector3 are finite
+        inline bool isFinite() const;                                   // checks to see if all values of LLVector3 are finite
 
         inline void clear();        // Clears LLVector4 to (0, 0, 0, 1)
         inline void clearVec();     // deprecated
@@ -101,14 +101,12 @@ class LLVector4
         F32         normVec();                  // deprecated
 
         // Sets all values to absolute value of their original values
-        // Returns TRUE if data changed
-        BOOL abs();
+        // Returns true if data changed
+        bool abs();
 
-        BOOL isExactlyClear() const     { return (mV[VW] == 1.0f) && !mV[VX] && !mV[VY] && !mV[VZ]; }
-        BOOL isExactlyZero() const      { return !mV[VW] && !mV[VX] && !mV[VY] && !mV[VZ]; }
+        bool isExactlyClear() const     { return (mV[VW] == 1.0f) && !mV[VX] && !mV[VY] && !mV[VZ]; }
+        bool isExactlyZero() const      { return !mV[VW] && !mV[VX] && !mV[VY] && !mV[VZ]; }
 
-        const LLVector4&    rotVec(F32 angle, const LLVector4 &vec);    // Rotates about vec by angle radians
-        const LLVector4&    rotVec(F32 angle, F32 x, F32 y, F32 z);     // Rotates about x,y,z by angle radians
         const LLVector4&    rotVec(const LLMatrix4 &mat);               // Rotates by MAT4 mat
         const LLVector4&    rotVec(const LLQuaternion &q);              // Rotates by QUAT q
 
@@ -139,7 +137,7 @@ class LLVector4
 
 // Non-member functions
 F32 angle_between(const LLVector4 &a, const LLVector4 &b);      // Returns angle (radians) between a and b
-BOOL are_parallel(const LLVector4 &a, const LLVector4 &b, F32 epsilon=F_APPROXIMATELY_ZERO);        // Returns TRUE if a and b are very close to parallel
+bool are_parallel(const LLVector4 &a, const LLVector4 &b, F32 epsilon = F_APPROXIMATELY_ZERO);      // Returns true if a and b are very close to parallel
 F32 dist_vec(const LLVector4 &a, const LLVector4 &b);           // Returns distance between a and b
 F32 dist_vec_squared(const LLVector4 &a, const LLVector4 &b);   // Returns distance squared between a and b
 LLVector3   vec4to3(const LLVector4 &vec);
@@ -226,7 +224,7 @@ inline LLVector4::LLVector4(const LLSD &sd)
 }
 
 
-inline BOOL LLVector4::isFinite() const
+inline bool LLVector4::isFinite() const
 {
     return (llfinite(mV[VX]) && llfinite(mV[VY]) && llfinite(mV[VZ]) && llfinite(mV[VW]));
 }
diff --git a/indra/llmath/xform.cpp b/indra/llmath/xform.cpp
index 6edad9664f..39bbb94c9f 100644
--- a/indra/llmath/xform.cpp
+++ b/indra/llmath/xform.cpp
@@ -52,12 +52,12 @@ LLXform* LLXform::getRoot() const
     return (LLXform*)root;
 }
 
-BOOL LLXform::isRoot() const
+bool LLXform::isRoot() const
 {
     return (!mParent);
 }
 
-BOOL LLXform::isRootEdit() const
+bool LLXform::isRootEdit() const
 {
     return (!mParent);
 }
@@ -86,7 +86,7 @@ void LLXformMatrix::update()
     }
 }
 
-void LLXformMatrix::updateMatrix(BOOL update_bounds)
+void LLXformMatrix::updateMatrix(bool update_bounds)
 {
     update();
 
diff --git a/indra/llmath/xform.h b/indra/llmath/xform.h
index 06ca526f4f..7434301670 100644
--- a/indra/llmath/xform.h
+++ b/indra/llmath/xform.h
@@ -30,12 +30,12 @@
 #include "m4math.h"
 #include "llquaternion.h"
 
-const F32 MAX_OBJECT_Z      = 4096.f; // should match REGION_HEIGHT_METERS, Pre-havok4: 768.f
-const F32 MIN_OBJECT_Z      = -256.f;
-const F32 DEFAULT_MAX_PRIM_SCALE = 64.f;
-const F32 DEFAULT_MAX_PRIM_SCALE_NO_MESH = 10.f;
-const F32 MIN_PRIM_SCALE = 0.01f;
-const F32 MAX_PRIM_SCALE = 65536.f; // something very high but not near FLT_MAX
+constexpr F32 MAX_OBJECT_Z      = 4096.f; // should match REGION_HEIGHT_METERS, Pre-havok4: 768.f
+constexpr F32 MIN_OBJECT_Z      = -256.f;
+constexpr F32 DEFAULT_MAX_PRIM_SCALE = 64.f;
+constexpr F32 DEFAULT_MAX_PRIM_SCALE_NO_MESH = 10.f;
+constexpr F32 MIN_PRIM_SCALE = 0.01f;
+constexpr F32 MAX_PRIM_SCALE = 65536.f; // something very high but not near FLT_MAX
 
 class LLXform
 {
@@ -52,7 +52,7 @@ protected:
     LLXform*      mParent;
     U32           mChanged;
 
-    BOOL          mScaleChildOffset;
+    bool          mScaleChildOffset;
 
 public:
     typedef enum e_changed_flags
@@ -78,7 +78,7 @@ public:
         mScale.   setVec(1,1,1);
         mWorldPosition.clearVec();
         mWorldRotation.loadIdentity();
-        mScaleChildOffset = FALSE;
+        mScaleChildOffset = false;
     }
 
      LLXform();
@@ -86,7 +86,7 @@ public:
 
     void getLocalMat4(LLMatrix4 &mat) const { mat.initAll(mScale, mRotation, mPosition); }
 
-    inline BOOL setParent(LLXform *parent);
+    inline bool setParent(LLXform *parent);
 
     inline void setPosition(const LLVector3& pos);
     inline void setPosition(const F32 x, const F32 y, const F32 z);
@@ -109,18 +109,18 @@ public:
     void warn(const char* const msg);
 
     void        setChanged(const U32 bits)                  { mChanged |= bits; }
-    BOOL        isChanged() const                           { return mChanged; }
-    BOOL        isChanged(const U32 bits) const             { return mChanged & bits; }
+    bool        isChanged() const                           { return mChanged; }
+    bool        isChanged(const U32 bits) const             { return mChanged & bits; }
     void        clearChanged()                              { mChanged = 0; }
     void        clearChanged(U32 bits)                      { mChanged &= ~bits; }
 
-    void        setScaleChildOffset(BOOL scale)             { mScaleChildOffset = scale; }
-    BOOL        getScaleChildOffset()                       { return mScaleChildOffset; }
+    void        setScaleChildOffset(bool scale)             { mScaleChildOffset = scale; }
+    bool        getScaleChildOffset()                       { return mScaleChildOffset; }
 
     LLXform* getParent() const { return mParent; }
     LLXform* getRoot() const;
-    virtual BOOL isRoot() const;
-    virtual BOOL isRootEdit() const;
+    virtual bool isRoot() const;
+    virtual bool isRootEdit() const;
 
     const LLVector3&    getPosition()  const        { return mPosition; }
     const LLVector3&    getScale() const            { return mScale; }
@@ -149,7 +149,7 @@ public:
     }
 
     void update();
-    void updateMatrix(BOOL update_bounds = TRUE);
+    void updateMatrix(bool update_bounds = true);
     void getMinMax(LLVector3& min,LLVector3& max) const;
 
 protected:
@@ -159,12 +159,12 @@ protected:
 
 };
 
-BOOL LLXform::setParent(LLXform* parent)
+bool LLXform::setParent(LLXform* parent)
 {
     // Validate and make sure we're not creating a loop
     if (parent == mParent)
     {
-        return TRUE;
+        return true;
     }
     if (parent)
     {
@@ -174,13 +174,13 @@ BOOL LLXform::setParent(LLXform* parent)
             if (cur_par == this)
             {
                 //warn("LLXform::setParent Creating loop when setting parent!");
-                return FALSE;
+                return false;
             }
             cur_par = cur_par->mParent;
         }
     }
     mParent = parent;
-    return TRUE;
+    return true;
 }
 
 void LLXform::setPosition(const LLVector3& pos)
diff --git a/indra/llmessage/CMakeLists.txt b/indra/llmessage/CMakeLists.txt
index c1e4967b24..56c93ca5af 100644
--- a/indra/llmessage/CMakeLists.txt
+++ b/indra/llmessage/CMakeLists.txt
@@ -12,7 +12,6 @@ if (LL_TESTS)
 include(LLAddBuildTest)
 endif ()
 include(Python)
-include(JsonCpp)
 
 set(llmessage_SOURCE_FILES
     llassetstorage.cpp
diff --git a/indra/llmessage/llassetstorage.cpp b/indra/llmessage/llassetstorage.cpp
index 734b7a8a63..70a7a34a70 100644
--- a/indra/llmessage/llassetstorage.cpp
+++ b/indra/llmessage/llassetstorage.cpp
@@ -198,14 +198,14 @@ LLBaseDownloadRequest::LLBaseDownloadRequest(const LLUUID &uuid, const LLAssetTy
       mDownCallback(),
       mUserData(NULL),
       mHost(),
-      mIsTemp(FALSE),
-      mIsPriority(FALSE),
-      mDataSentInFirstPacket(FALSE),
-      mDataIsInCache(FALSE)
+      mIsTemp(false),
+      mIsPriority(false),
+      mDataSentInFirstPacket(false),
+      mDataIsInCache(false)
 {
     // Need to guarantee that this time is up to date, we may be creating a circuit even though we haven't been
     //  running a message system loop.
-    mTime = LLMessageSystem::getMessageTimeSeconds(TRUE);
+    mTime = LLMessageSystem::getMessageTimeSeconds(true);
 }
 
 // virtual
@@ -228,8 +228,8 @@ LLAssetRequest::LLAssetRequest(const LLUUID &uuid, const LLAssetType::EType type
     :   LLBaseDownloadRequest(uuid, type),
         mUpCallback(),
         mInfoCallback( NULL ),
-        mIsLocal(FALSE),
-        mIsUserWaiting(FALSE),
+        mIsLocal(false),
+        mIsUserWaiting(false),
         mTimeout(LL_ASSET_STORAGE_TIMEOUT),
         mBytesFetched(0)
 {
@@ -344,7 +344,7 @@ void LLAssetStorage::_init(LLMessageSystem *msg,
                            LLXferManager *xfer,
                            const LLHost &upstream_host)
 {
-    mShutDown = FALSE;
+    mShutDown = false;
     mMessageSys = msg;
     mXferManager = xfer;
 
@@ -354,9 +354,9 @@ void LLAssetStorage::_init(LLMessageSystem *msg,
 
 LLAssetStorage::~LLAssetStorage()
 {
-    mShutDown = TRUE;
+    mShutDown = true;
 
-    _cleanupRequests(TRUE, LL_ERR_CIRCUIT_GONE);
+    _cleanupRequests(true, LL_ERR_CIRCUIT_GONE);
 
     if (gMessageSystem)
     {
@@ -378,10 +378,10 @@ void LLAssetStorage::setUpstream(const LLHost &upstream_host)
 
 void LLAssetStorage::checkForTimeouts()
 {
-    _cleanupRequests(FALSE, LL_ERR_TCP_TIMEOUT);
+    _cleanupRequests(false, LL_ERR_TCP_TIMEOUT);
 }
 
-void LLAssetStorage::_cleanupRequests(BOOL all, S32 error)
+void LLAssetStorage::_cleanupRequests(bool all, S32 error)
 {
     F64Seconds mt_secs = LLMessageSystem::getMessageTimeSeconds();
 
@@ -436,7 +436,7 @@ void LLAssetStorage::_cleanupRequests(BOOL all, S32 error)
 
 }
 
-BOOL LLAssetStorage::hasLocalAsset(const LLUUID &uuid, const LLAssetType::EType type)
+bool LLAssetStorage::hasLocalAsset(const LLUUID &uuid, const LLAssetType::EType type)
 {
     return LLFileSystem::getExists(uuid, type);
 }
@@ -450,7 +450,7 @@ bool LLAssetStorage::findInCacheAndInvokeCallback(const LLUUID& uuid, LLAssetTyp
         llassert(callback != NULL);
     }
 
-    BOOL exists = LLFileSystem::getExists(uuid, type);
+    bool exists = LLFileSystem::getExists(uuid, type);
     if (exists)
     {
         LLFileSystem file(uuid, type);
@@ -482,7 +482,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid,
                                   LLAssetType::EType type,
                                   LLAssetStorage::LLGetAssetCallback callback,
                                   void *user_data,
-                                  BOOL is_priority)
+                                  bool is_priority)
 {
     LL_DEBUGS("AssetStorage") << "LLAssetStorage::getAssetData() - " << uuid << "," << LLAssetType::lookup(type) << LL_ENDL;
 
@@ -523,7 +523,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid,
         return;
     }
 
-    BOOL exists = LLFileSystem::getExists(uuid, type);
+    bool exists = LLFileSystem::getExists(uuid, type);
     LLFileSystem file(uuid, type);
     U32 size = exists ? file.getSize() : 0;
 
@@ -547,7 +547,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid,
             file.remove();
         }
 
-        BOOL duplicate = FALSE;
+        bool duplicate = false;
 
         // check to see if there's a pending download of this uuid already
         for (request_list_t::iterator iter = mPendingDownloads.begin();
@@ -566,7 +566,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid,
 
                 // this is a duplicate request
                 // queue the request, but don't actually ask for it again
-                duplicate = TRUE;
+                duplicate = true;
             }
         }
         if (duplicate)
@@ -700,7 +700,7 @@ void LLAssetStorage::getEstateAsset(
     EstateAssetType etype,
     LLGetAssetCallback callback,
     void *user_data,
-    BOOL is_priority)
+    bool is_priority)
 {
     LL_DEBUGS() << "LLAssetStorage::getEstateAsset() - " << asset_id << "," << LLAssetType::lookup(atype) << ", estatetype " << etype << LL_ENDL;
 
@@ -724,7 +724,7 @@ void LLAssetStorage::getEstateAsset(
         return;
     }
 
-    BOOL exists = LLFileSystem::getExists(asset_id, atype);
+    bool exists = LLFileSystem::getExists(asset_id, atype);
     LLFileSystem file(asset_id, atype);
     U32 size = exists ? file.getSize() : 0;
 
@@ -846,7 +846,7 @@ void LLAssetStorage::getInvItemAsset(
     LLAssetType::EType atype,
     LLGetAssetCallback callback,
     void *user_data,
-    BOOL is_priority)
+    bool is_priority)
 {
     LL_DEBUGS() << "LLAssetStorage::getInvItemAsset() - " << asset_id << "," << LLAssetType::lookup(atype) << LL_ENDL;
 
@@ -995,12 +995,12 @@ void LLAssetStorage::uploadCompleteCallback(
         return;
     }
     LLAssetRequest  *req     = (LLAssetRequest *)user_data;
-    BOOL            success  = TRUE;
+    bool            success  = true;
 
     if (result)
     {
         LL_WARNS("AssetStorage") << "LLAssetStorage::uploadCompleteCallback " << result << ":" << getErrorString(result) << " trying to upload file to upstream provider" << LL_ENDL;
-        success = FALSE;
+        success = false;
     }
 
     // we're done grabbing the file, tell the client
@@ -1020,7 +1020,7 @@ void LLAssetStorage::processUploadComplete(LLMessageSystem *msg, void **user_dat
     LLUUID          uuid;
     S8              asset_type_s8;
     LLAssetType::EType asset_type;
-    BOOL            success = FALSE;
+    bool            success = false;
 
     msg->getUUIDFast(_PREHASH_AssetBlock, _PREHASH_UUID, uuid);
     msg->getS8Fast(_PREHASH_AssetBlock, _PREHASH_Type, asset_type_s8);
@@ -1030,7 +1030,7 @@ void LLAssetStorage::processUploadComplete(LLMessageSystem *msg, void **user_dat
     this_ptr->_callUploadCallbacks(uuid, asset_type, success, LLExtStat::NONE);
 }
 
-void LLAssetStorage::_callUploadCallbacks(const LLUUID &uuid, LLAssetType::EType asset_type, BOOL success, LLExtStat ext_status )
+void LLAssetStorage::_callUploadCallbacks(const LLUUID &uuid, LLAssetType::EType asset_type, bool success, LLExtStat ext_status )
 {
     // SJB: We process the callbacks in reverse order, I do not know if this is important,
     //      but I didn't want to mess with it.
@@ -1125,7 +1125,7 @@ S32 LLAssetStorage::getNumPending(LLAssetStorage::ERequestType rt) const
     S32 num_pending = -1;
     if (requests)
     {
-        num_pending = requests->size();
+        num_pending = static_cast<S32>(requests->size());
     }
     return num_pending;
 }
@@ -1348,7 +1348,7 @@ void LLAssetStorage::getAssetData(const LLUUID uuid,
                                                    S32,
                                                    LLExtStat),
                                   void *user_data,
-                                  BOOL is_priority)
+                                  bool is_priority)
 {
     // check for duplicates here, since we're about to fool the normal duplicate checker
     for (request_list_t::iterator iter = mPendingDownloads.begin();
@@ -1391,7 +1391,7 @@ void LLAssetStorage::legacyGetDataCallback(const LLUUID &uuid,
     std::string filename;
 
     // Check if the asset is marked toxic, and don't load bad stuff
-    BOOL toxic = gAssetStorage->isAssetToxic( uuid );
+    bool toxic = gAssetStorage->isAssetToxic( uuid );
 
     if ( !status
          && !toxic )
@@ -1489,9 +1489,9 @@ void LLAssetStorage::reportMetric( const LLUUID& asset_id, const LLAssetType::ET
 
 
 // Check if an asset is in the toxic map.  If it is, the entry is updated
-BOOL LLAssetStorage::isAssetToxic( const LLUUID& uuid )
+bool LLAssetStorage::isAssetToxic( const LLUUID& uuid )
 {
-    BOOL is_toxic = FALSE;
+    bool is_toxic = false;
 
     if ( !uuid.isNull() )
     {
@@ -1499,7 +1499,7 @@ BOOL LLAssetStorage::isAssetToxic( const LLUUID& uuid )
         if ( iter != mToxicAssetMap.end() )
         {   // Found toxic asset
             (*iter).second = LLFrameTimer::getTotalTime() + TOXIC_ASSET_LIFETIME;
-            is_toxic = TRUE;
+            is_toxic = true;
         }
     }
     return is_toxic;
@@ -1509,7 +1509,7 @@ BOOL LLAssetStorage::isAssetToxic( const LLUUID& uuid )
 
 
 // Clean the toxic asset list, remove old entries
-void LLAssetStorage::flushOldToxicAssets( BOOL force_it )
+void LLAssetStorage::flushOldToxicAssets( bool force_it )
 {
     // Scan and look for old entries
     U64 now = LLFrameTimer::getTotalTime();
diff --git a/indra/llmessage/llassetstorage.h b/indra/llmessage/llassetstorage.h
index 8a22f3f031..88fa572092 100644
--- a/indra/llmessage/llassetstorage.h
+++ b/indra/llmessage/llassetstorage.h
@@ -122,11 +122,11 @@ public:
 
     void    *mUserData;
     LLHost  mHost;
-    BOOL    mIsTemp;
+    bool    mIsTemp;
     F64Seconds      mTime;              // Message system time
-    BOOL    mIsPriority;
-    BOOL    mDataSentInFirstPacket;
-    BOOL    mDataIsInCache;
+    bool    mIsPriority;
+    bool    mDataSentInFirstPacket;
+    bool    mDataIsInCache;
 };
 
 class LLAssetRequest : public LLBaseDownloadRequest
@@ -143,8 +143,8 @@ public:
 //  void    (*mUpCallback)(const LLUUID&, void *, S32, LLExtStat);
     void    (*mInfoCallback)(LLAssetInfo *, void *, S32);
 
-    BOOL    mIsLocal;
-    BOOL    mIsUserWaiting;     // We don't want to try forever if a user is waiting for a result.
+    bool    mIsLocal;
+    bool    mIsUserWaiting;     // We don't want to try forever if a user is waiting for a result.
     F64Seconds      mTimeout;           // Amount of time before timing out.
     LLUUID  mRequestingAgentID; // Only valid for uploads from an agent
     F64 mBytesFetched;
@@ -209,7 +209,7 @@ public:
     };
 
 protected:
-    BOOL mShutDown;
+    bool mShutDown;
     LLHost mUpstreamHost;
 
     LLMessageSystem *mMessageSys;
@@ -232,11 +232,11 @@ public:
 
     void setUpstream(const LLHost &upstream_host);
 
-    BOOL hasLocalAsset(const LLUUID &uuid, LLAssetType::EType type);
+    bool hasLocalAsset(const LLUUID &uuid, LLAssetType::EType type);
 
     // public interface methods
     // note that your callback may get called BEFORE the function returns
-    void getAssetData(const LLUUID uuid, LLAssetType::EType atype, LLGetAssetCallback cb, void *user_data, BOOL is_priority = FALSE);
+    void getAssetData(const LLUUID uuid, LLAssetType::EType atype, LLGetAssetCallback cb, void *user_data, bool is_priority = false);
 
     /*
      * TransactionID version
@@ -259,19 +259,19 @@ public:
 
     void getEstateAsset(const LLHost &object_sim, const LLUUID &agent_id, const LLUUID &session_id,
                                     const LLUUID &asset_id, LLAssetType::EType atype, EstateAssetType etype,
-                                     LLGetAssetCallback callback, void *user_data, BOOL is_priority);
+                                     LLGetAssetCallback callback, void *user_data, bool is_priority);
 
     void getInvItemAsset(const LLHost &object_sim,
                          const LLUUID &agent_id, const LLUUID &session_id,
                          const LLUUID &owner_id, const LLUUID &task_id, const LLUUID &item_id,
                          const LLUUID &asset_id, LLAssetType::EType atype,
-                         LLGetAssetCallback cb, void *user_data, BOOL is_priority = FALSE); // Get a particular inventory item.
+                         LLGetAssetCallback cb, void *user_data, bool is_priority = false); // Get a particular inventory item.
 
     // Check if an asset is in the toxic map.  If it is, the entry is updated
-    BOOL        isAssetToxic( const LLUUID& uuid );
+    bool        isAssetToxic( const LLUUID& uuid );
 
     // Clean the toxic asset list, remove old entries
-    void        flushOldToxicAssets( BOOL force_it );
+    void        flushOldToxicAssets( bool force_it );
 
     // Add an item to the toxic asset map
     void        markAssetToxic( const LLUUID& uuid );
@@ -352,7 +352,7 @@ public:
 
     // deprecated file-based methods
     // Not overriden
-    void getAssetData(const LLUUID uuid, LLAssetType::EType type, void (*callback)(const char*, const LLUUID&, void *, S32, LLExtStat), void *user_data, BOOL is_priority = FALSE);
+    void getAssetData(const LLUUID uuid, LLAssetType::EType type, void (*callback)(const char*, const LLUUID&, void *, S32, LLExtStat), void *user_data, bool is_priority = false);
 
     /*
      * TransactionID version
@@ -374,12 +374,12 @@ public:
     // add extra methods to handle metadata
 
 protected:
-    void _cleanupRequests(BOOL all, S32 error);
-    void _callUploadCallbacks(const LLUUID &uuid, const LLAssetType::EType asset_type, BOOL success, LLExtStat ext_status);
+    void _cleanupRequests(bool all, S32 error);
+    void _callUploadCallbacks(const LLUUID &uuid, const LLAssetType::EType asset_type, bool success, LLExtStat ext_status);
 
     virtual void _queueDataRequest(const LLUUID& uuid, LLAssetType::EType type, LLGetAssetCallback callback,
-                                   void *user_data, BOOL duplicate,
-                                   BOOL is_priority) = 0;
+                                   void *user_data, bool duplicate,
+                                   bool is_priority) = 0;
 
 private:
     void _init(LLMessageSystem *msg,
diff --git a/indra/llmessage/llavatarnamecache.cpp b/indra/llmessage/llavatarnamecache.cpp
index a0cd6f93c1..9b4454a847 100644
--- a/indra/llmessage/llavatarnamecache.cpp
+++ b/indra/llmessage/llavatarnamecache.cpp
@@ -45,6 +45,7 @@
 #include "llcorehttputil.h"
 #include "llexception.h"
 #include "stringize.h"
+#include "workqueue.h"
 
 #include <map>
 #include <set>
@@ -179,19 +180,26 @@ void LLAvatarNameCache::requestAvatarNameCache_(std::string url, std::vector<LLU
 
         if (LLAvatarNameCache::instanceExists())
         {
-            if (!success)
-            {   // on any sort of failure add dummy records for any agent IDs
-                // in this request that we do not have cached already
-                std::vector<LLUUID>::const_iterator it = agentIds.begin();
-                for (; it != agentIds.end(); ++it)
-                {
-                    const LLUUID& agent_id = *it;
-                    LLAvatarNameCache::getInstance()->handleAgentError(agent_id);
-                }
-                return;
-            }
+            // dispatch handler execution back to mainloop
+            auto workqueue = LL::WorkQueue::getInstance("mainloop");
 
-            LLAvatarNameCache::getInstance()->handleAvNameCacheSuccess(results, httpResults);
+            if (workqueue)
+            {
+                workqueue->post([=]()
+                    {
+                        if (!success)
+                        {   // on any sort of failure add dummy records for any agent IDs
+                            // in this request that we do not have cached already
+                            for (const auto& agent_id : agentIds)
+                            {
+                                LLAvatarNameCache::getInstance()->handleAgentError(agent_id);
+                            }
+                            return;
+                        }
+
+                        LLAvatarNameCache::getInstance()->handleAvNameCacheSuccess(results, httpResults);
+                    });
+            }
         }
     }
     catch (const LLCoros::Stop&)
@@ -240,7 +248,7 @@ void LLAvatarNameCache::handleAvNameCacheSuccess(const LLSD &data, const LLSD &h
 
     // Same logic as error response case
     const LLSD& unresolved_agents = data["bad_ids"];
-    S32  num_unresolved = unresolved_agents.size();
+    auto num_unresolved = unresolved_agents.size();
     if (num_unresolved > 0)
     {
         LL_WARNS("AvNameCache") << "LLAvatarNameResponder::result " << num_unresolved << " unresolved ids; "
diff --git a/indra/llmessage/llblowfishcipher.h b/indra/llmessage/llblowfishcipher.h
index 2343882cee..53dc94cce9 100644
--- a/indra/llmessage/llblowfishcipher.h
+++ b/indra/llmessage/llblowfishcipher.h
@@ -46,7 +46,7 @@ public:
     /*virtual*/ U32 requiredEncryptionSpace(U32 src_len) const;
 
 #ifdef _DEBUG
-    static BOOL testHarness();
+    static bool testHarness();
 #endif
 
 private:
diff --git a/indra/llmessage/llcachename.cpp b/indra/llmessage/llcachename.cpp
index d5b967a8e9..63ac46722a 100644
--- a/indra/llmessage/llcachename.cpp
+++ b/indra/llmessage/llcachename.cpp
@@ -99,7 +99,7 @@ public:
     }
 
     void done()         { mID.setNull(); }
-    bool isDone() const { return mID.isNull() != FALSE; }
+    bool isDone() const { return mID.isNull(); }
 };
 
 class ReplySender
@@ -215,7 +215,7 @@ public:
     Impl(LLMessageSystem* msg);
     ~Impl();
 
-    BOOL getName(const LLUUID& id, std::string& first, std::string& last);
+    bool getName(const LLUUID& id, std::string& first, std::string& last);
 
     boost::signals2::connection addPending(const LLUUID& id, const LLCacheNameCallback& callback);
     void addPending(const LLUUID& id, const LLHost& host);
@@ -402,13 +402,13 @@ void LLCacheName::exportFile(std::ostream& ostr)
 }
 
 
-BOOL LLCacheName::Impl::getName(const LLUUID& id, std::string& first, std::string& last)
+bool LLCacheName::Impl::getName(const LLUUID& id, std::string& first, std::string& last)
 {
     if(id.isNull())
     {
         first = sCacheName["nobody"];
         last.clear();
-        return TRUE;
+        return true;
     }
 
     LLCacheNameEntry* entry = get_ptr_in_map(mCache, id );
@@ -416,7 +416,7 @@ BOOL LLCacheName::Impl::getName(const LLUUID& id, std::string& first, std::strin
     {
         first = entry->mFirstName;
         last =  entry->mLastName;
-        return TRUE;
+        return true;
     }
     else
     {
@@ -426,7 +426,7 @@ BOOL LLCacheName::Impl::getName(const LLUUID& id, std::string& first, std::strin
         {
             mAskNameQueue.insert(id);
         }
-        return FALSE;
+        return false;
     }
 
 }
@@ -440,22 +440,22 @@ void LLCacheName::localizeCacheName(std::string key, std::string value)
         LL_WARNS()<< " Error localizing cache key " << key << " To "<< value<<LL_ENDL;
 }
 
-BOOL LLCacheName::getFullName(const LLUUID& id, std::string& fullname)
+bool LLCacheName::getFullName(const LLUUID& id, std::string& fullname)
 {
     std::string first_name, last_name;
-    BOOL res = impl.getName(id, first_name, last_name);
+    bool res = impl.getName(id, first_name, last_name);
     fullname = buildFullName(first_name, last_name);
     return res;
 }
 
 
 
-BOOL LLCacheName::getGroupName(const LLUUID& id, std::string& group)
+bool LLCacheName::getGroupName(const LLUUID& id, std::string& group)
 {
     if(id.isNull())
     {
         group = sCacheName["none"];
-        return TRUE;
+        return true;
     }
 
     LLCacheNameEntry* entry = get_ptr_in_map(impl.mCache,id);
@@ -471,7 +471,7 @@ BOOL LLCacheName::getGroupName(const LLUUID& id, std::string& group)
     if (entry)
     {
         group = entry->mGroupName;
-        return TRUE;
+        return true;
     }
     else
     {
@@ -480,27 +480,27 @@ BOOL LLCacheName::getGroupName(const LLUUID& id, std::string& group)
         {
             impl.mAskGroupQueue.insert(id);
         }
-        return FALSE;
+        return false;
     }
 }
 
-BOOL LLCacheName::getUUID(const std::string& first, const std::string& last, LLUUID& id)
+bool LLCacheName::getUUID(const std::string& first, const std::string& last, LLUUID& id)
 {
     std::string full_name = buildFullName(first, last);
     return getUUID(full_name, id);
 }
 
-BOOL LLCacheName::getUUID(const std::string& full_name, LLUUID& id)
+bool LLCacheName::getUUID(const std::string& full_name, LLUUID& id)
 {
     ReverseCache::iterator iter = impl.mReverseCache.find(full_name);
     if (iter != impl.mReverseCache.end())
     {
         id = iter->second;
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -562,13 +562,13 @@ std::string LLCacheName::buildLegacyName(const std::string& complete_name)
 {
     //boost::regexp was showing up in the crashreporter, so doing
     //painfully manual parsing using substr. LF
-    S32 open_paren = complete_name.rfind(" (");
-    S32 close_paren = complete_name.rfind(')');
+    auto open_paren = complete_name.rfind(" (");
+    auto close_paren = complete_name.rfind(')');
 
     if (open_paren != std::string::npos &&
         close_paren == complete_name.length()-1)
     {
-        S32 length = close_paren - open_paren - 2;
+        auto length = close_paren - open_paren - 2;
         std::string legacy_name = complete_name.substr(open_paren+2, length);
 
         if (legacy_name.length() > 0)
@@ -577,7 +577,7 @@ std::string LLCacheName::buildLegacyName(const std::string& complete_name)
             LLStringUtil::toUpper(cap_letter);
             legacy_name = cap_letter + legacy_name.substr(1);
 
-            S32 separator = legacy_name.find('.');
+            auto separator = legacy_name.find('.');
 
             if (separator != std::string::npos)
             {
diff --git a/indra/llmessage/llcachename.h b/indra/llmessage/llcachename.h
index 401f52a579..1df713c7c7 100644
--- a/indra/llmessage/llcachename.h
+++ b/indra/llmessage/llcachename.h
@@ -70,12 +70,12 @@ public:
 
     // If available, copies name ("bobsmith123" or "James Linden") into string
     // If not available, copies the string "waiting".
-    // Returns TRUE iff available.
-    BOOL getFullName(const LLUUID& id, std::string& full_name);
+    // Returns true if available.
+    bool getFullName(const LLUUID& id, std::string& full_name);
 
     // Reverse lookup of UUID from name
-    BOOL getUUID(const std::string& first, const std::string& last, LLUUID& id);
-    BOOL getUUID(const std::string& fullname, LLUUID& id);
+    bool getUUID(const std::string& first, const std::string& last, LLUUID& id);
+    bool getUUID(const std::string& fullname, LLUUID& id);
 
     // IDEVO Temporary code
     // Clean up new-style "bobsmith123 Resident" names to "bobsmith123" for display
@@ -99,8 +99,8 @@ public:
     // If available, this method copies the group name into the string
     // provided. The caller must allocate at least
     // DB_GROUP_NAME_BUF_SIZE characters. If not available, this
-    // method copies the string "waiting". Returns TRUE iff available.
-    BOOL getGroupName(const LLUUID& id, std::string& group);
+    // method copies the string "waiting". Returns true if available.
+    bool getGroupName(const LLUUID& id, std::string& group);
 
     // Call the callback with the group or avatar name.
     // If the data is currently available, may call the callback immediatly
diff --git a/indra/llmessage/llcipher.h b/indra/llmessage/llcipher.h
index 4bbc6466a9..bbd7eae1d5 100644
--- a/indra/llmessage/llcipher.h
+++ b/indra/llmessage/llcipher.h
@@ -38,7 +38,7 @@ class LLCipher
 public:
     virtual ~LLCipher() {}
 
-    // encrypt src and place result into dst. returns TRUE if
+    // encrypt src and place result into dst. returns true if
     // Returns number of bytes written into dst, or 0 on error.
     virtual U32 encrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len) = 0;
 
diff --git a/indra/llmessage/llcircuit.cpp b/indra/llmessage/llcircuit.cpp
index d6125fd321..bf22f3d3f0 100644
--- a/indra/llmessage/llcircuit.cpp
+++ b/indra/llmessage/llcircuit.cpp
@@ -73,10 +73,10 @@ LLCircuitData::LLCircuitData(const LLHost &host, TPACKETID in_id,
     mHighestPacketID(in_id),
     mTimeoutCallback(NULL),
     mTimeoutUserData(NULL),
-    mTrusted(FALSE),
-    mbAllowTimeout(TRUE),
-    mbAlive(TRUE),
-    mBlocked(FALSE),
+    mTrusted(false),
+    mbAllowTimeout(true),
+    mbAlive(true),
+    mBlocked(false),
     mPingTime(0.0),
     mLastPingSendTime(0.0),
     mLastPingReceivedTime(0.0),
@@ -111,7 +111,7 @@ LLCircuitData::LLCircuitData(const LLHost &host, TPACKETID in_id,
 {
     // Need to guarantee that this time is up to date, we may be creating a circuit even though we haven't been
     //  running a message system loop.
-    F64Seconds mt_sec = LLMessageSystem::getMessageTimeSeconds(TRUE);
+    F64Seconds mt_sec = LLMessageSystem::getMessageTimeSeconds(true);
     F32 distribution_offset = ll_frand();
 
     mPingTime = mt_sec;
@@ -282,7 +282,7 @@ S32 LLCircuitData::resendUnackedPackets(const F64Seconds now)
     //
 
     reliable_iter iter;
-    BOOL have_resend_overflow = FALSE;
+    bool have_resend_overflow = false;
     for (iter = mUnackedPackets.begin(); iter != mUnackedPackets.end();)
     {
         packetp = iter->second;
@@ -488,7 +488,7 @@ void LLCircuit::removeCircuitData(const LLHost &host)
     mLastCircuit = NULL;
 }
 
-void LLCircuitData::setAlive(BOOL b_alive)
+void LLCircuitData::setAlive(bool b_alive)
 {
     if (mbAlive != b_alive)
     {
@@ -500,12 +500,12 @@ void LLCircuitData::setAlive(BOOL b_alive)
     {
         mLastPingReceivedTime = LLMessageSystem::getMessageTimeSeconds();
         mPingsInTransit = 0;
-        mBlocked = FALSE;
+        mBlocked = false;
     }
 }
 
 
-void LLCircuitData::setAllowTimeout(BOOL allow)
+void LLCircuitData::setAllowTimeout(bool allow)
 {
     mbAllowTimeout = allow;
 
@@ -513,7 +513,7 @@ void LLCircuitData::setAllowTimeout(BOOL allow)
     {
         // resuming circuit
         // make sure it's alive
-        setAlive(TRUE);
+        setAlive(true);
     }
 }
 
@@ -599,7 +599,7 @@ void LLCircuit::resendUnackedPackets(S32& unacked_list_length, S32& unacked_list
 }
 
 
-BOOL LLCircuitData::isDuplicateResend(TPACKETID packetnum)
+bool LLCircuitData::isDuplicateResend(TPACKETID packetnum)
 {
     return (mRecentlyReceivedReliablePackets.find(packetnum) != mRecentlyReceivedReliablePackets.end());
 }
@@ -632,7 +632,7 @@ LLCircuitData* LLCircuit::findCircuit(const LLHost& host) const
 }
 
 
-BOOL LLCircuit::isCircuitAlive(const LLHost& host) const
+bool LLCircuit::isCircuitAlive(const LLHost& host) const
 {
     LLCircuitData *cdp = findCircuit(host);
     if(cdp)
@@ -640,7 +640,7 @@ BOOL LLCircuit::isCircuitAlive(const LLHost& host) const
         return cdp->mbAlive;
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLCircuitData::setTimeoutCallback(void (*callback_func)(const LLHost &host, void *user_data), void *user_data)
@@ -649,7 +649,7 @@ void LLCircuitData::setTimeoutCallback(void (*callback_func)(const LLHost &host,
     mTimeoutUserData = user_data;
 }
 
-void LLCircuitData::checkPacketInID(TPACKETID id, BOOL receive_resent)
+void LLCircuitData::checkPacketInID(TPACKETID id, bool receive_resent)
 {
     // Done as floats so we don't have to worry about running out of room
     // with U32 getting poked into an S32.
@@ -781,8 +781,8 @@ void LLCircuitData::checkPacketInID(TPACKETID id, BOOL receive_resent)
 void LLCircuit::updateWatchDogTimers(LLMessageSystem *msgsys)
 {
     F64Seconds cur_time = LLMessageSystem::getMessageTimeSeconds();
-    S32 count = mPingSet.size();
-    S32 cur = 0;
+    size_t count = mPingSet.size();
+    size_t cur = 0;
 
     // Only process each circuit once at most, stop processing if no circuits
     while((cur < count) && !mPingSet.empty())
@@ -844,7 +844,7 @@ void LLCircuit::updateWatchDogTimers(LLMessageSystem *msgsys)
 }
 
 
-BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
+bool LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
 {
     F64Seconds cur_time = LLMessageSystem::getMessageTimeSeconds();
     mLastPingSendTime = cur_time;
@@ -852,7 +852,7 @@ BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
     if (!checkCircuitTimeout())
     {
         // Pass this back to the calling LLCircuit, this circuit needs to be cleaned up.
-        return FALSE;
+        return false;
     }
 
     // WARNING!
@@ -866,7 +866,7 @@ BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
     // This is to handle the case if we actually manage to wrap our
     // packet IDs - the oldest will actually have a higher packet ID
     // than the current.
-    BOOL wrapped = FALSE;
+    bool wrapped = false;
     reliable_iter iter;
     iter = mUnackedPackets.upper_bound(getPacketOutID());
     if (iter == mUnackedPackets.end())
@@ -874,19 +874,19 @@ BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
         // Nothing AFTER this one, so we want the lowest packet ID
         // then.
         iter = mUnackedPackets.begin();
-        wrapped = TRUE;
+        wrapped = true;
     }
 
     TPACKETID packet_id = 0;
 
     // Check against the "final" packets
-    BOOL wrapped_final = FALSE;
+    bool wrapped_final = false;
     reliable_iter iter_final;
     iter_final = mFinalRetryPackets.upper_bound(getPacketOutID());
     if (iter_final == mFinalRetryPackets.end())
     {
         iter_final = mFinalRetryPackets.begin();
-        wrapped_final = TRUE;
+        wrapped_final = true;
     }
 
     //LL_INFOS() << mHost << " - unacked count " << mUnackedPackets.size() << LL_ENDL;
@@ -922,12 +922,12 @@ BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
         }
         else
         {
-            BOOL had_unacked = FALSE;
+            bool had_unacked = false;
             if (iter != mUnackedPackets.end())
             {
                 // Unacked list has the lowest so far
                 packet_id = iter->first;
-                had_unacked = TRUE;
+                had_unacked = true;
                 //LL_INFOS() << mHost << ": Unacked" << LL_ENDL;
             }
 
@@ -989,7 +989,7 @@ BOOL LLCircuitData::updateWatchDogTimers(LLMessageSystem *msgsys)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -1041,7 +1041,7 @@ void LLCircuitData::clearDuplicateList(TPACKETID oldest_id)
     //LL_INFOS() << "Recent list after: " << mRecentlyReceivedReliablePackets.size() << LL_ENDL;
 }
 
-BOOL LLCircuitData::checkCircuitTimeout()
+bool LLCircuitData::checkCircuitTimeout()
 {
     F64Seconds time_since_last_ping = LLMessageSystem::getMessageTimeSeconds() - mLastPingReceivedTime;
 
@@ -1049,7 +1049,7 @@ BOOL LLCircuitData::checkCircuitTimeout()
     if (time_since_last_ping > mHeartbeatTimeout)
     {
         LL_WARNS() << "LLCircuitData::checkCircuitTimeout for " << mHost << " last ping " << time_since_last_ping << " seconds ago." <<LL_ENDL;
-        setAlive(FALSE);
+        setAlive(false);
         if (mTimeoutCallback)
         {
             LL_WARNS() << "LLCircuitData::checkCircuitTimeout for " << mHost << " calling callback." << LL_ENDL;
@@ -1059,16 +1059,16 @@ BOOL LLCircuitData::checkCircuitTimeout()
         {
             // The callback didn't try and resurrect the circuit.  We should kill it.
             LL_WARNS() << "LLCircuitData::checkCircuitTimeout for " << mHost << " still dead, dropping." << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 // Call this method when a reliable message comes in - this will
 // correctly place the packet in the correct list to be acked later.
-BOOL LLCircuitData::collectRAck(TPACKETID packet_num)
+bool LLCircuitData::collectRAck(TPACKETID packet_num)
 {
     if (mAcks.empty())
     {
@@ -1081,7 +1081,7 @@ BOOL LLCircuitData::collectRAck(TPACKETID packet_num)
     {
         mAckCreationTime = getAgeInSeconds();
     }
-    return TRUE;
+    return true;
 }
 
 // this method is called during the message system processAcks() to
@@ -1273,7 +1273,7 @@ void LLCircuitData::pingTimerStop(const U8 ping_id)
     {
         // Ack, we got our ping response on the same frame! Sigh, let's get a real time otherwise
         // all of our ping calculations will be skewed.
-        mt_secs = LLMessageSystem::getMessageTimeSeconds(TRUE);
+        mt_secs = LLMessageSystem::getMessageTimeSeconds(true);
     }
     mLastPingReceivedTime = mt_secs;
 
@@ -1291,7 +1291,7 @@ void LLCircuitData::pingTimerStop(const U8 ping_id)
     mPingsInTransit = delta_ping;
     if (mBlocked && (mPingsInTransit <= PING_RELEASE_BLOCK))
     {
-        mBlocked = FALSE;
+        mBlocked = false;
     }
 }
 
@@ -1303,7 +1303,7 @@ void LLCircuitData::pingTimerStart()
 
     if (!mBlocked && (mPingsInTransit > PING_START_BLOCK))
     {
-        mBlocked = TRUE;
+        mBlocked = true;
     }
 }
 
@@ -1344,19 +1344,19 @@ U32 LLCircuitData::getPacketsLost() const
 }
 
 
-BOOL LLCircuitData::isAlive() const
+bool LLCircuitData::isAlive() const
 {
     return mbAlive;
 }
 
 
-BOOL LLCircuitData::isBlocked() const
+bool LLCircuitData::isBlocked() const
 {
     return mBlocked;
 }
 
 
-BOOL LLCircuitData::getAllowTimeout() const
+bool LLCircuitData::getAllowTimeout() const
 {
     return mbAllowTimeout;
 }
@@ -1402,13 +1402,13 @@ F32Milliseconds LLCircuitData::getPingDelayAveraged()
 }
 
 
-BOOL LLCircuitData::getTrusted() const
+bool LLCircuitData::getTrusted() const
 {
     return mTrusted;
 }
 
 
-void LLCircuitData::setTrusted(BOOL t)
+void LLCircuitData::setTrusted(bool t)
 {
     mTrusted = t;
 }
diff --git a/indra/llmessage/llcircuit.h b/indra/llmessage/llcircuit.h
index 7a5a5c65f5..521982d7b1 100644
--- a/indra/llmessage/llcircuit.h
+++ b/indra/llmessage/llcircuit.h
@@ -100,7 +100,7 @@ public:
     void setRemoteID(const LLUUID& id) { mRemoteID = id; }
     void setRemoteSessionID(const LLUUID& id) { mRemoteSessionID = id; }
 
-    void        setTrusted(BOOL t);
+    void        setTrusted(bool t);
 
     // The local end point ID is used when establishing a trusted circuit.
     // no matching set function for getLocalEndPointID()
@@ -111,9 +111,9 @@ public:
     S32             getPingsInTransit() const           { return mPingsInTransit; }
 
     // ACCESSORS
-    BOOL        isAlive() const;
-    BOOL        isBlocked() const;
-    BOOL        getAllowTimeout() const;
+    bool        isAlive() const;
+    bool        isBlocked() const;
+    bool        getAllowTimeout() const;
     F32Milliseconds getPingDelayAveraged();
     F32Milliseconds getPingInTransitTime();
     U32         getPacketsIn() const;
@@ -122,7 +122,7 @@ public:
     U32         getPacketsOut() const;
     U32         getPacketsLost() const;
     TPACKETID   getPacketOutID() const;
-    BOOL        getTrusted() const;
+    bool        getTrusted() const;
     F32         getAgeInSeconds() const;
     S32         getUnackedPacketCount() const   { return mUnackedPacketCount; }
     S32         getUnackedPacketBytes() const   { return mUnackedPacketBytes; }
@@ -164,31 +164,31 @@ public:
 protected:
     TPACKETID       nextPacketOutID();
     void                setPacketInID(TPACKETID id);
-    void                    checkPacketInID(TPACKETID id, BOOL receive_resent);
+    void                    checkPacketInID(TPACKETID id, bool receive_resent);
     void            setPingDelay(U32Milliseconds ping);
-    BOOL            checkCircuitTimeout();  // Return FALSE if the circuit is dead and should be cleaned up
+    bool            checkCircuitTimeout();  // Return false if the circuit is dead and should be cleaned up
 
     void            addBytesIn(S32Bytes bytes);
     void            addBytesOut(S32Bytes bytes);
 
     U8              nextPingID()            { mLastPingID++; return mLastPingID; }
 
-    BOOL            updateWatchDogTimers(LLMessageSystem *msgsys);  // Return FALSE if the circuit is dead and should be cleaned up
+    bool            updateWatchDogTimers(LLMessageSystem *msgsys);  // Return false if the circuit is dead and should be cleaned up
 
     void            addReliablePacket(S32 mSocket, U8 *buf_ptr, S32 buf_len, LLReliablePacketParams *params);
-    BOOL            isDuplicateResend(TPACKETID packetnum);
+    bool            isDuplicateResend(TPACKETID packetnum);
     // Call this method when a reliable message comes in - this will
     // correctly place the packet in the correct list to be acked
     // later. RAack = requested ack
-    BOOL collectRAck(TPACKETID packet_num);
+    bool collectRAck(TPACKETID packet_num);
 
 
     void            setTimeoutCallback(void (*callback_func)(const LLHost &host, void *user_data), void *user_data);
 
 
 
-    void            setAlive(BOOL b_alive);
-    void            setAllowTimeout(BOOL allow);
+    void            setAlive(bool b_alive);
+    void            setAllowTimeout(bool allow);
 
 protected:
     // Identification for this circuit.
@@ -212,12 +212,12 @@ protected:
     void    (*mTimeoutCallback)(const LLHost &host, void *user_data);
     void    *mTimeoutUserData;
 
-    BOOL    mTrusted;                   // Is this circuit trusted?
-    BOOL    mbAllowTimeout;             // Machines can "pause" circuits, forcing them not to be dropped
+    bool    mTrusted;                   // Is this circuit trusted?
+    bool    mbAllowTimeout;             // Machines can "pause" circuits, forcing them not to be dropped
 
-    BOOL    mbAlive;                    // Indicates whether a circuit is "alive", i.e. responded to pings
+    bool    mbAlive;                    // Indicates whether a circuit is "alive", i.e. responded to pings
 
-    BOOL    mBlocked;                   // Blocked is true if the circuit is hosed, i.e. far behind on pings
+    bool    mBlocked;                   // Blocked is true if the circuit is hosed, i.e. far behind on pings
 
     // Not sure what the difference between this and mLastPingSendTime is
     F64Seconds  mPingTime;                  // Time at which a ping was sent.
@@ -293,7 +293,7 @@ public:
 
     // ACCESSORS
     LLCircuitData* findCircuit(const LLHost& host) const;
-    BOOL isCircuitAlive(const LLHost& host) const;
+    bool isCircuitAlive(const LLHost& host) const;
 
     // MANIPULATORS
     LLCircuitData   *addCircuitData(const LLHost &host, TPACKETID in_id);
diff --git a/indra/llmessage/llclassifiedflags.cpp b/indra/llmessage/llclassifiedflags.cpp
index 748b6f2355..0df249d035 100644
--- a/indra/llmessage/llclassifiedflags.cpp
+++ b/indra/llmessage/llclassifiedflags.cpp
@@ -36,7 +36,7 @@
 
 #include "llclassifiedflags.h"
 
-ClassifiedFlags pack_classified_flags_request(BOOL auto_renew, BOOL inc_pg, BOOL inc_mature, BOOL inc_adult)
+ClassifiedFlags pack_classified_flags_request(bool auto_renew, bool inc_pg, bool inc_mature, bool inc_adult)
 {
     U8 rv = 0;
     if(inc_pg) rv |= CLASSIFIED_QUERY_INC_PG;
@@ -47,7 +47,7 @@ ClassifiedFlags pack_classified_flags_request(BOOL auto_renew, BOOL inc_pg, BOOL
     return rv;
 }
 
-ClassifiedFlags pack_classified_flags(BOOL auto_renew, BOOL inc_pg, BOOL inc_mature, BOOL inc_adult)
+ClassifiedFlags pack_classified_flags(bool auto_renew, bool inc_pg, bool inc_mature, bool inc_adult)
 {
     U8 rv = 0;
     if(inc_pg) rv |= CLASSIFIED_QUERY_INC_PG;
diff --git a/indra/llmessage/llclassifiedflags.h b/indra/llmessage/llclassifiedflags.h
index 9c6c268b39..ee29e4ed13 100644
--- a/indra/llmessage/llclassifiedflags.h
+++ b/indra/llmessage/llclassifiedflags.h
@@ -51,9 +51,9 @@ const S32 MAX_CLASSIFIEDS = 100;
 // This function is used in AO viewers to pack old query flags into the request
 // so that they can talk to old dataservers properly. When the AO servers are deployed on agni
 // we can revert back to ClassifiedFlags pack_classified_flags and get rider of this one.
-ClassifiedFlags pack_classified_flags_request(BOOL auto_renew, BOOL is_pg, BOOL is_mature, BOOL is_adult);
+ClassifiedFlags pack_classified_flags_request(bool auto_renew, bool is_pg, bool is_mature, bool is_adult);
 
-ClassifiedFlags pack_classified_flags(BOOL auto_renew, BOOL is_pg, BOOL is_mature, BOOL is_adult);
+ClassifiedFlags pack_classified_flags(bool auto_renew, bool is_pg, bool is_mature, bool is_adult);
 bool is_cf_mature(ClassifiedFlags flags);
 //bool is_cf_enabled(ClassifiedFlags flags);
 bool is_cf_update_time(ClassifiedFlags flags);
diff --git a/indra/llmessage/llcoproceduremanager.cpp b/indra/llmessage/llcoproceduremanager.cpp
index 959cfb2762..263670bdac 100644
--- a/indra/llmessage/llcoproceduremanager.cpp
+++ b/indra/llmessage/llcoproceduremanager.cpp
@@ -87,7 +87,7 @@ public:
     ///
     inline S32 count() const
     {
-        return countPending() + countActive();
+        return static_cast<S32>(countPending() + countActive());
     }
 
     void close();
diff --git a/indra/llmessage/llcorehttputil.cpp b/indra/llmessage/llcorehttputil.cpp
index dcc0b59d07..684e96883f 100644
--- a/indra/llmessage/llcorehttputil.cpp
+++ b/indra/llmessage/llcorehttputil.cpp
@@ -35,8 +35,7 @@
 #include "llsd.h"
 #include "llsdjson.h"
 #include "llsdserialize.h"
-#include "json/reader.h" // JSON
-#include "json/writer.h" // JSON
+#include "boost/json.hpp" // Boost.Json
 #include "llfilesystem.h"
 
 #include "message.h" // for getting the port
@@ -585,15 +584,12 @@ LLSD HttpCoroJSONHandler::handleSuccess(LLCore::HttpResponse * response, LLCore:
     }
 
     LLCore::BufferArrayStream bas(body);
-    Json::Value jsonRoot;
 
-    try
-    {
-        bas >> jsonRoot;
-    }
-    catch (std::runtime_error& e)
+    boost::json::error_code ec;
+    boost::json::value jsonRoot = boost::json::parse(bas, ec);
+    if(ec.failed())
     {   // deserialization failed.  Record the reason and pass back an empty map for markup.
-        status = LLCore::HttpStatus(499, std::string(e.what()));
+        status = LLCore::HttpStatus(499, std::string(ec.what()));
         return result;
     }
 
@@ -613,13 +609,10 @@ LLSD HttpCoroJSONHandler::parseBody(LLCore::HttpResponse *response, bool &succes
     }
 
     LLCore::BufferArrayStream bas(body);
-    Json::Value jsonRoot;
 
-    try
-    {
-        bas >> jsonRoot;
-    }
-    catch (std::runtime_error&)
+    boost::json::error_code ec;
+    boost::json::value jsonRoot = boost::json::parse(bas, ec);
+    if (ec.failed())
     {
         success = false;
         return LLSD();
@@ -802,12 +795,12 @@ LLSD HttpCoroutineAdapter::postJsonAndSuspend(LLCore::HttpRequest::ptr_t request
 
     {
         LLCore::BufferArrayStream outs(rawbody.get());
-        Json::Value root = LlsdToJson(body);
-        Json::FastWriter writer;
+        auto root = LlsdToJson(body);
+        std::string value = boost::json::serialize(root);
 
-        LL_WARNS("Http::post") << "JSON Generates: \"" << writer.write(root) << "\"" << LL_ENDL;
+        LL_WARNS("Http::post") << "JSON Generates: \"" << value << "\"" << LL_ENDL;
 
-        outs << writer.write(root);
+        outs << value;
     }
 
     return postAndSuspend_(request, url, rawbody, options, headers, httpHandler);
@@ -861,11 +854,11 @@ LLSD HttpCoroutineAdapter::putJsonAndSuspend(LLCore::HttpRequest::ptr_t request,
 
     {
         LLCore::BufferArrayStream outs(rawbody.get());
-        Json::Value root = LlsdToJson(body);
-        Json::FastWriter writer;
+        auto root = LlsdToJson(body);
+        std::string value = boost::json::serialize(root);
 
-        LL_WARNS("Http::put") << "JSON Generates: \"" << writer.write(root) << "\"" << LL_ENDL;
-        outs << writer.write(root);
+        LL_WARNS("Http::put") << "JSON Generates: \"" << value << "\"" << LL_ENDL;
+        outs << value;
     }
 
     return putAndSuspend_(request, url, rawbody, options, headers, httpHandler);
diff --git a/indra/llmessage/lldatapacker.cpp b/indra/llmessage/lldatapacker.cpp
index 71862b9aa4..e911150787 100644
--- a/indra/llmessage/lldatapacker.cpp
+++ b/indra/llmessage/lldatapacker.cpp
@@ -45,7 +45,7 @@ const S32 DP_BUFSIZE = 512;
 
 static char DUMMY_BUFFER[128]; /*Flawfinder: ignore*/
 
-LLDataPacker::LLDataPacker() : mPassFlags(0), mWriteEnabled(FALSE)
+LLDataPacker::LLDataPacker() : mPassFlags(0), mWriteEnabled(false)
 {
 }
 
@@ -61,10 +61,10 @@ void LLDataPacker::dumpBufferToLog()
     LL_ERRS() << "dumpBufferToLog not implemented for this type!" << LL_ENDL;
 }
 
-BOOL LLDataPacker::packFixed(const F32 value, const char *name,
-                             const BOOL is_signed, const U32 int_bits, const U32 frac_bits)
+bool LLDataPacker::packFixed(const F32 value, const char *name,
+                             const bool is_signed, const U32 int_bits, const U32 frac_bits)
 {
-    BOOL success = TRUE;
+    bool success = true;
     S32 unsigned_bits = int_bits + frac_bits;
     S32 total_bits = unsigned_bits;
 
@@ -113,10 +113,10 @@ BOOL LLDataPacker::packFixed(const F32 value, const char *name,
     return success;
 }
 
-BOOL LLDataPacker::unpackFixed(F32 &value, const char *name,
-                               const BOOL is_signed, const U32 int_bits, const U32 frac_bits)
+bool LLDataPacker::unpackFixed(F32 &value, const char *name,
+                               const bool is_signed, const U32 int_bits, const U32 frac_bits)
 {
-    BOOL success = TRUE;
+    bool success = true;
     //LL_INFOS() << "unpackFixed:" << name << " int:" << int_bits << " frac:" << frac_bits << LL_ENDL;
     S32 unsigned_bits = int_bits + frac_bits;
     S32 total_bits = unsigned_bits;
@@ -166,82 +166,82 @@ BOOL LLDataPacker::unpackFixed(F32 &value, const char *name,
     return success;
 }
 
-BOOL LLDataPacker::unpackU16s(U16 *values, S32 count, const char *name)
+bool LLDataPacker::unpackU16s(U16 *values, S32 count, const char *name)
 {
     for (S32 idx = 0; idx < count; ++idx)
     {
         if (!unpackU16(values[idx], name))
         {
             LL_WARNS("DATAPACKER") << "Buffer overflow reading Unsigned 16s \"" << name << "\" at index " << idx << "!" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLDataPacker::unpackS16s(S16 *values, S32 count, const char *name)
+bool LLDataPacker::unpackS16s(S16 *values, S32 count, const char *name)
 {
     for (S32 idx = 0; idx < count; ++idx)
     {
         if (!unpackS16(values[idx], name))
         {
             LL_WARNS("DATAPACKER") << "Buffer overflow reading Signed 16s \"" << name << "\" at index " << idx << "!" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLDataPacker::unpackF32s(F32 *values, S32 count, const char *name)
+bool LLDataPacker::unpackF32s(F32 *values, S32 count, const char *name)
 {
     for (S32 idx = 0; idx < count; ++idx)
     {
         if (!unpackF32(values[idx], name))
         {
             LL_WARNS("DATAPACKER") << "Buffer overflow reading Float 32s \"" << name << "\" at index " << idx << "!" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLDataPacker::unpackColor4Us(LLColor4U *values, S32 count, const char *name)
+bool LLDataPacker::unpackColor4Us(LLColor4U *values, S32 count, const char *name)
 {
     for (S32 idx = 0; idx < count; ++idx)
     {
         if (!unpackColor4U(values[idx], name))
         {
             LL_WARNS("DATAPACKER") << "Buffer overflow reading Float 32s \"" << name << "\" at index " << idx << "!" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLDataPacker::unpackUUIDs(LLUUID *values, S32 count, const char *name)
+bool LLDataPacker::unpackUUIDs(LLUUID *values, S32 count, const char *name)
 {
     for (S32 idx = 0; idx < count; ++idx)
     {
         if (!unpackUUID(values[idx], name))
         {
             LL_WARNS("DATAPACKER") << "Buffer overflow reading UUIDs \"" << name << "\" at index " << idx << "!" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //---------------------------------------------------------------------------
 // LLDataPackerBinaryBuffer implementation
 //---------------------------------------------------------------------------
 
-BOOL LLDataPackerBinaryBuffer::packString(const std::string& value, const char *name)
+bool LLDataPackerBinaryBuffer::packString(const std::string& value, const char *name)
 {
-    S32 length = value.length()+1;
+    S32 length = static_cast<S32>(value.length()) + 1;
 
     if (!verifyLength(length, name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -249,30 +249,30 @@ BOOL LLDataPackerBinaryBuffer::packString(const std::string& value, const char *
         htolememcpy(mCurBufferp, value.c_str(), MVT_VARIABLE, length);
     }
     mCurBufferp += length;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackString(std::string& value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackString(std::string& value, const char *name)
 {
     S32 length = (S32)strlen((char *)mCurBufferp) + 1; /*Flawfinder: ignore*/
 
     if (!verifyLength(length, name))
     {
-        return FALSE;
+        return false;
     }
 
     value = std::string((char*)mCurBufferp); // We already assume NULL termination calling strlen()
 
     mCurBufferp += length;
-    return TRUE;
+    return true;
 }
 
-BOOL LLDataPackerBinaryBuffer::packBinaryData(const U8 *value, S32 size, const char *name)
+bool LLDataPackerBinaryBuffer::packBinaryData(const U8 *value, S32 size, const char *name)
 {
     if (!verifyLength(size + 4, name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -285,16 +285,16 @@ BOOL LLDataPackerBinaryBuffer::packBinaryData(const U8 *value, S32 size, const c
         htolememcpy(mCurBufferp, value, MVT_VARIABLE, size);
     }
     mCurBufferp += size;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackBinaryData(U8 *value, S32 &size, const char *name)
+bool LLDataPackerBinaryBuffer::unpackBinaryData(U8 *value, S32 &size, const char *name)
 {
     if (!verifyLength(4, name))
     {
         LL_WARNS() << "LLDataPackerBinaryBuffer::unpackBinaryData would unpack invalid data, aborting!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     htolememcpy(&size, mCurBufferp, MVT_S32, 4);
@@ -302,7 +302,7 @@ BOOL LLDataPackerBinaryBuffer::unpackBinaryData(U8 *value, S32 &size, const char
     if (size < 0)
     {
         LL_WARNS() << "LLDataPackerBinaryBuffer::unpackBinaryData unpacked invalid size, aborting!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     mCurBufferp += 4;
@@ -310,21 +310,21 @@ BOOL LLDataPackerBinaryBuffer::unpackBinaryData(U8 *value, S32 &size, const char
     if (!verifyLength(size, name))
     {
         LL_WARNS() << "LLDataPackerBinaryBuffer::unpackBinaryData would unpack invalid data, aborting!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     htolememcpy(value, mCurBufferp, MVT_VARIABLE, size);
     mCurBufferp += size;
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::packBinaryDataFixed(const U8 *value, S32 size, const char *name)
+bool LLDataPackerBinaryBuffer::packBinaryDataFixed(const U8 *value, S32 size, const char *name)
 {
     if (!verifyLength(size, name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -332,27 +332,27 @@ BOOL LLDataPackerBinaryBuffer::packBinaryDataFixed(const U8 *value, S32 size, co
         htolememcpy(mCurBufferp, value, MVT_VARIABLE, size);
     }
     mCurBufferp += size;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackBinaryDataFixed(U8 *value, S32 size, const char *name)
+bool LLDataPackerBinaryBuffer::unpackBinaryDataFixed(U8 *value, S32 size, const char *name)
 {
     if (!verifyLength(size, name))
     {
-        return FALSE;
+        return false;
     }
     htolememcpy(value, mCurBufferp, MVT_VARIABLE, size);
     mCurBufferp += size;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::packU8(const U8 value, const char *name)
+bool LLDataPackerBinaryBuffer::packU8(const U8 value, const char *name)
 {
     if (!verifyLength(sizeof(U8), name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -360,28 +360,28 @@ BOOL LLDataPackerBinaryBuffer::packU8(const U8 value, const char *name)
         *mCurBufferp = value;
     }
     mCurBufferp++;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackU8(U8 &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackU8(U8 &value, const char *name)
 {
     if (!verifyLength(sizeof(U8), name))
     {
-        return FALSE;
+        return false;
     }
 
     value = *mCurBufferp;
     mCurBufferp++;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::packU16(const U16 value, const char *name)
+bool LLDataPackerBinaryBuffer::packU16(const U16 value, const char *name)
 {
     if (!verifyLength(sizeof(U16), name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -389,25 +389,25 @@ BOOL LLDataPackerBinaryBuffer::packU16(const U16 value, const char *name)
         htolememcpy(mCurBufferp, &value, MVT_U16, 2);
     }
     mCurBufferp += 2;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackU16(U16 &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackU16(U16 &value, const char *name)
 {
     if (!verifyLength(sizeof(U16), name))
     {
-        return FALSE;
+        return false;
     }
 
     htolememcpy(&value, mCurBufferp, MVT_U16, 2);
     mCurBufferp += 2;
-    return TRUE;
+    return true;
 }
 
-BOOL LLDataPackerBinaryBuffer::packS16(const S16 value, const char *name)
+bool LLDataPackerBinaryBuffer::packS16(const S16 value, const char *name)
 {
-    BOOL success = verifyLength(sizeof(S16), name);
+    bool success = verifyLength(sizeof(S16), name);
 
     if (mWriteEnabled && success)
     {
@@ -417,9 +417,9 @@ BOOL LLDataPackerBinaryBuffer::packS16(const S16 value, const char *name)
     return success;
 }
 
-BOOL LLDataPackerBinaryBuffer::unpackS16(S16 &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackS16(S16 &value, const char *name)
 {
-    BOOL success = verifyLength(sizeof(S16), name);
+    bool success = verifyLength(sizeof(S16), name);
 
     if (success)
     {
@@ -429,11 +429,11 @@ BOOL LLDataPackerBinaryBuffer::unpackS16(S16 &value, const char *name)
     return success;
 }
 
-BOOL LLDataPackerBinaryBuffer::packU32(const U32 value, const char *name)
+bool LLDataPackerBinaryBuffer::packU32(const U32 value, const char *name)
 {
     if (!verifyLength(sizeof(U32), name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -441,28 +441,28 @@ BOOL LLDataPackerBinaryBuffer::packU32(const U32 value, const char *name)
         htolememcpy(mCurBufferp, &value, MVT_U32, 4);
     }
     mCurBufferp += 4;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackU32(U32 &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackU32(U32 &value, const char *name)
 {
     if (!verifyLength(sizeof(U32), name))
     {
-        return FALSE;
+        return false;
     }
 
     htolememcpy(&value, mCurBufferp, MVT_U32, 4);
     mCurBufferp += 4;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::packS32(const S32 value, const char *name)
+bool LLDataPackerBinaryBuffer::packS32(const S32 value, const char *name)
 {
     if (!verifyLength(sizeof(S32), name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -470,28 +470,28 @@ BOOL LLDataPackerBinaryBuffer::packS32(const S32 value, const char *name)
         htolememcpy(mCurBufferp, &value, MVT_S32, 4);
     }
     mCurBufferp += 4;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackS32(S32 &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackS32(S32 &value, const char *name)
 {
     if(!verifyLength(sizeof(S32), name))
     {
-        return FALSE;
+        return false;
     }
 
     htolememcpy(&value, mCurBufferp, MVT_S32, 4);
     mCurBufferp += 4;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::packF32(const F32 value, const char *name)
+bool LLDataPackerBinaryBuffer::packF32(const F32 value, const char *name)
 {
     if (!verifyLength(sizeof(F32), name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -499,28 +499,28 @@ BOOL LLDataPackerBinaryBuffer::packF32(const F32 value, const char *name)
         htolememcpy(mCurBufferp, &value, MVT_F32, 4);
     }
     mCurBufferp += 4;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackF32(F32 &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackF32(F32 &value, const char *name)
 {
     if (!verifyLength(sizeof(F32), name))
     {
-        return FALSE;
+        return false;
     }
 
     htolememcpy(&value, mCurBufferp, MVT_F32, 4);
     mCurBufferp += 4;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::packColor4(const LLColor4 &value, const char *name)
+bool LLDataPackerBinaryBuffer::packColor4(const LLColor4 &value, const char *name)
 {
     if (!verifyLength(16, name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -528,28 +528,28 @@ BOOL LLDataPackerBinaryBuffer::packColor4(const LLColor4 &value, const char *nam
         htolememcpy(mCurBufferp, value.mV, MVT_LLVector4, 16);
     }
     mCurBufferp += 16;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackColor4(LLColor4 &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackColor4(LLColor4 &value, const char *name)
 {
     if (!verifyLength(16, name))
     {
-        return FALSE;
+        return false;
     }
 
     htolememcpy(value.mV, mCurBufferp, MVT_LLVector4, 16);
     mCurBufferp += 16;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::packColor4U(const LLColor4U &value, const char *name)
+bool LLDataPackerBinaryBuffer::packColor4U(const LLColor4U &value, const char *name)
 {
     if (!verifyLength(4, name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -557,29 +557,29 @@ BOOL LLDataPackerBinaryBuffer::packColor4U(const LLColor4U &value, const char *n
         htolememcpy(mCurBufferp, value.mV, MVT_VARIABLE, 4);
     }
     mCurBufferp += 4;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackColor4U(LLColor4U &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackColor4U(LLColor4U &value, const char *name)
 {
     if (!verifyLength(4, name))
     {
-        return FALSE;
+        return false;
     }
 
     htolememcpy(value.mV, mCurBufferp, MVT_VARIABLE, 4);
     mCurBufferp += 4;
-    return TRUE;
+    return true;
 }
 
 
 
-BOOL LLDataPackerBinaryBuffer::packVector2(const LLVector2 &value, const char *name)
+bool LLDataPackerBinaryBuffer::packVector2(const LLVector2 &value, const char *name)
 {
     if (!verifyLength(8, name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -588,29 +588,29 @@ BOOL LLDataPackerBinaryBuffer::packVector2(const LLVector2 &value, const char *n
         htolememcpy(mCurBufferp+4, &value.mV[1], MVT_F32, 4);
     }
     mCurBufferp += 8;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackVector2(LLVector2 &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackVector2(LLVector2 &value, const char *name)
 {
     if (!verifyLength(8, name))
     {
-        return FALSE;
+        return false;
     }
 
     htolememcpy(&value.mV[0], mCurBufferp, MVT_F32, 4);
     htolememcpy(&value.mV[1], mCurBufferp+4, MVT_F32, 4);
     mCurBufferp += 8;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::packVector3(const LLVector3 &value, const char *name)
+bool LLDataPackerBinaryBuffer::packVector3(const LLVector3 &value, const char *name)
 {
     if (!verifyLength(12, name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -618,27 +618,27 @@ BOOL LLDataPackerBinaryBuffer::packVector3(const LLVector3 &value, const char *n
         htolememcpy(mCurBufferp, value.mV, MVT_LLVector3, 12);
     }
     mCurBufferp += 12;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackVector3(LLVector3 &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackVector3(LLVector3 &value, const char *name)
 {
     if (!verifyLength(12, name))
     {
-        return FALSE;
+        return false;
     }
 
     htolememcpy(value.mV, mCurBufferp, MVT_LLVector3, 12);
     mCurBufferp += 12;
-    return TRUE;
+    return true;
 }
 
-BOOL LLDataPackerBinaryBuffer::packVector4(const LLVector4 &value, const char *name)
+bool LLDataPackerBinaryBuffer::packVector4(const LLVector4 &value, const char *name)
 {
     if (!verifyLength(16, name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -646,27 +646,27 @@ BOOL LLDataPackerBinaryBuffer::packVector4(const LLVector4 &value, const char *n
         htolememcpy(mCurBufferp, value.mV, MVT_LLVector4, 16);
     }
     mCurBufferp += 16;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackVector4(LLVector4 &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackVector4(LLVector4 &value, const char *name)
 {
     if (!verifyLength(16, name))
     {
-        return FALSE;
+        return false;
     }
 
     htolememcpy(value.mV, mCurBufferp, MVT_LLVector4, 16);
     mCurBufferp += 16;
-    return TRUE;
+    return true;
 }
 
-BOOL LLDataPackerBinaryBuffer::packUUID(const LLUUID &value, const char *name)
+bool LLDataPackerBinaryBuffer::packUUID(const LLUUID &value, const char *name)
 {
     if (!verifyLength(16, name))
     {
-        return FALSE;
+        return false;
     }
 
     if (mWriteEnabled)
@@ -674,20 +674,20 @@ BOOL LLDataPackerBinaryBuffer::packUUID(const LLUUID &value, const char *name)
         htolememcpy(mCurBufferp, value.mData, MVT_LLUUID, 16);
     }
     mCurBufferp += 16;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerBinaryBuffer::unpackUUID(LLUUID &value, const char *name)
+bool LLDataPackerBinaryBuffer::unpackUUID(LLUUID &value, const char *name)
 {
     if (!verifyLength(16, name))
     {
-        return FALSE;
+        return false;
     }
 
     htolememcpy(value.mData, mCurBufferp, MVT_LLUUID, 16);
     mCurBufferp += 16;
-    return TRUE;
+    return true;
 }
 
 const LLDataPackerBinaryBuffer& LLDataPackerBinaryBuffer::operator=(const LLDataPackerBinaryBuffer &a)
@@ -729,9 +729,9 @@ void LLDataPackerBinaryBuffer::dumpBufferToLog()
 //---------------------------------------------------------------------------
 // LLDataPackerAsciiBuffer implementation
 //---------------------------------------------------------------------------
-BOOL LLDataPackerAsciiBuffer::packString(const std::string& value, const char *name)
+bool LLDataPackerAsciiBuffer::packString(const std::string& value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -740,7 +740,7 @@ BOOL LLDataPackerAsciiBuffer::packString(const std::string& value, const char *n
     }
     else
     {
-        numCopied = value.length() + 1; /*Flawfinder: ignore*/
+        numCopied = static_cast<S32>(value.length()) + 1; /*Flawfinder: ignore*/
     }
 
     // snprintf returns number of bytes that would have been written
@@ -759,21 +759,21 @@ BOOL LLDataPackerAsciiBuffer::packString(const std::string& value, const char *n
     return success;
 }
 
-BOOL LLDataPackerAsciiBuffer::unpackString(std::string& value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackString(std::string& value, const char *name)
 {
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore*/
     if (!getValueStr(name, valuestr, DP_BUFSIZE))  // NULL terminated
     {
-        return FALSE;
+        return false;
     }
     value = valuestr;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDataPackerAsciiBuffer::packBinaryData(const U8 *value, S32 size, const char *name)
+bool LLDataPackerAsciiBuffer::packBinaryData(const U8 *value, S32 size, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
 
     int numCopied = 0;
@@ -796,7 +796,7 @@ BOOL LLDataPackerAsciiBuffer::packBinaryData(const U8 *value, S32 size, const ch
 
 
         S32 i;
-        BOOL bBufferFull = FALSE;
+        bool bBufferFull = false;
         for (i = 0; i < size && !bBufferFull; i++)
         {
             numCopied = snprintf(mCurBufferp, getBufferSize()-getCurrentSize(), "%02x ", value[i]); /* Flawfinder: ignore */
@@ -804,7 +804,7 @@ BOOL LLDataPackerAsciiBuffer::packBinaryData(const U8 *value, S32 size, const ch
             {
                 numCopied = getBufferSize()-getCurrentSize();
                 LL_WARNS() << "LLDataPackerAsciiBuffer::packBinaryData: data truncated: " << LL_ENDL;
-                bBufferFull = TRUE;
+                bBufferFull = true;
             }
             mCurBufferp += numCopied;
         }
@@ -836,13 +836,13 @@ BOOL LLDataPackerAsciiBuffer::packBinaryData(const U8 *value, S32 size, const ch
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackBinaryData(U8 *value, S32 &size, const char *name)
+bool LLDataPackerAsciiBuffer::unpackBinaryData(U8 *value, S32 &size, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];      /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     char *cur_pos = &valuestr[0];
@@ -861,16 +861,16 @@ BOOL LLDataPackerAsciiBuffer::unpackBinaryData(U8 *value, S32 &size, const char
 }
 
 
-BOOL LLDataPackerAsciiBuffer::packBinaryDataFixed(const U8 *value, S32 size, const char *name)
+bool LLDataPackerAsciiBuffer::packBinaryDataFixed(const U8 *value, S32 size, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
 
     if (mWriteEnabled)
     {
         S32 i;
         int numCopied = 0;
-        BOOL bBufferFull = FALSE;
+        bool bBufferFull = false;
         for (i = 0; i < size && !bBufferFull; i++)
         {
             numCopied = snprintf(mCurBufferp, getBufferSize()-getCurrentSize(), "%02x ", value[i]); /* Flawfinder: ignore */
@@ -878,7 +878,7 @@ BOOL LLDataPackerAsciiBuffer::packBinaryDataFixed(const U8 *value, S32 size, con
             {
                 numCopied = getBufferSize()-getCurrentSize();
                 LL_WARNS() << "LLDataPackerAsciiBuffer::packBinaryDataFixed: data truncated: " << LL_ENDL;
-                bBufferFull = TRUE;
+                bBufferFull = true;
             }
             mCurBufferp += numCopied;
 
@@ -908,13 +908,13 @@ BOOL LLDataPackerAsciiBuffer::packBinaryDataFixed(const U8 *value, S32 size, con
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackBinaryDataFixed(U8 *value, S32 size, const char *name)
+bool LLDataPackerAsciiBuffer::unpackBinaryDataFixed(U8 *value, S32 size, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];      /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     char *cur_pos = &valuestr[0];
@@ -932,9 +932,9 @@ BOOL LLDataPackerAsciiBuffer::unpackBinaryDataFixed(U8 *value, S32 size, const c
 
 
 
-BOOL LLDataPackerAsciiBuffer::packU8(const U8 value, const char *name)
+bool LLDataPackerAsciiBuffer::packU8(const U8 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -965,13 +965,13 @@ BOOL LLDataPackerAsciiBuffer::packU8(const U8 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackU8(U8 &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackU8(U8 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];      /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     S32 in_val;
@@ -980,9 +980,9 @@ BOOL LLDataPackerAsciiBuffer::unpackU8(U8 &value, const char *name)
     return success;
 }
 
-BOOL LLDataPackerAsciiBuffer::packU16(const U16 value, const char *name)
+bool LLDataPackerAsciiBuffer::packU16(const U16 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -1012,13 +1012,13 @@ BOOL LLDataPackerAsciiBuffer::packU16(const U16 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackU16(U16 &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackU16(U16 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];      /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     S32 in_val;
@@ -1027,9 +1027,9 @@ BOOL LLDataPackerAsciiBuffer::unpackU16(U16 &value, const char *name)
     return success;
 }
 
-BOOL LLDataPackerAsciiBuffer::packS16(const S16 value, const char *name)
+bool LLDataPackerAsciiBuffer::packS16(const S16 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -1059,13 +1059,13 @@ BOOL LLDataPackerAsciiBuffer::packS16(const S16 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackS16(S16 &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackS16(S16 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     S32 in_val;
@@ -1074,9 +1074,9 @@ BOOL LLDataPackerAsciiBuffer::unpackS16(S16 &value, const char *name)
     return success;
 }
 
-BOOL LLDataPackerAsciiBuffer::packU32(const U32 value, const char *name)
+bool LLDataPackerAsciiBuffer::packU32(const U32 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -1104,13 +1104,13 @@ BOOL LLDataPackerAsciiBuffer::packU32(const U32 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackU32(U32 &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackU32(U32 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];      /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%u", &value);
@@ -1118,9 +1118,9 @@ BOOL LLDataPackerAsciiBuffer::unpackU32(U32 &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::packS32(const S32 value, const char *name)
+bool LLDataPackerAsciiBuffer::packS32(const S32 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -1148,13 +1148,13 @@ BOOL LLDataPackerAsciiBuffer::packS32(const S32 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackS32(S32 &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackS32(S32 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];      /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%d", &value);
@@ -1162,9 +1162,9 @@ BOOL LLDataPackerAsciiBuffer::unpackS32(S32 &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::packF32(const F32 value, const char *name)
+bool LLDataPackerAsciiBuffer::packF32(const F32 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -1192,13 +1192,13 @@ BOOL LLDataPackerAsciiBuffer::packF32(const F32 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackF32(F32 &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackF32(F32 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];      /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%f", &value);
@@ -1206,9 +1206,9 @@ BOOL LLDataPackerAsciiBuffer::unpackF32(F32 &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::packColor4(const LLColor4 &value, const char *name)
+bool LLDataPackerAsciiBuffer::packColor4(const LLColor4 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -1236,22 +1236,22 @@ BOOL LLDataPackerAsciiBuffer::packColor4(const LLColor4 &value, const char *name
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackColor4(LLColor4 &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackColor4(LLColor4 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];  /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%f %f %f %f", &value.mV[0], &value.mV[1], &value.mV[2], &value.mV[3]);
     return success;
 }
 
-BOOL LLDataPackerAsciiBuffer::packColor4U(const LLColor4U &value, const char *name)
+bool LLDataPackerAsciiBuffer::packColor4U(const LLColor4U &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -1279,13 +1279,13 @@ BOOL LLDataPackerAsciiBuffer::packColor4U(const LLColor4U &value, const char *na
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackColor4U(LLColor4U &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackColor4U(LLColor4U &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];   /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     S32 r, g, b, a;
@@ -1299,9 +1299,9 @@ BOOL LLDataPackerAsciiBuffer::unpackColor4U(LLColor4U &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::packVector2(const LLVector2 &value, const char *name)
+bool LLDataPackerAsciiBuffer::packVector2(const LLVector2 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -1329,13 +1329,13 @@ BOOL LLDataPackerAsciiBuffer::packVector2(const LLVector2 &value, const char *na
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackVector2(LLVector2 &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackVector2(LLVector2 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];   /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%f %f", &value.mV[0], &value.mV[1]);
@@ -1343,9 +1343,9 @@ BOOL LLDataPackerAsciiBuffer::unpackVector2(LLVector2 &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::packVector3(const LLVector3 &value, const char *name)
+bool LLDataPackerAsciiBuffer::packVector3(const LLVector3 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -1373,22 +1373,22 @@ BOOL LLDataPackerAsciiBuffer::packVector3(const LLVector3 &value, const char *na
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackVector3(LLVector3 &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackVector3(LLVector3 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];  /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%f %f %f", &value.mV[0], &value.mV[1], &value.mV[2]);
     return success;
 }
 
-BOOL LLDataPackerAsciiBuffer::packVector4(const LLVector4 &value, const char *name)
+bool LLDataPackerAsciiBuffer::packVector4(const LLVector4 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     int numCopied = 0;
     if (mWriteEnabled)
@@ -1416,13 +1416,13 @@ BOOL LLDataPackerAsciiBuffer::packVector4(const LLVector4 &value, const char *na
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackVector4(LLVector4 &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackVector4(LLVector4 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];  /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%f %f %f %f", &value.mV[0], &value.mV[1], &value.mV[2], &value.mV[3]);
@@ -1430,9 +1430,9 @@ BOOL LLDataPackerAsciiBuffer::unpackVector4(LLVector4 &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiBuffer::packUUID(const LLUUID &value, const char *name)
+bool LLDataPackerAsciiBuffer::packUUID(const LLUUID &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
 
     int numCopied = 0;
@@ -1456,20 +1456,20 @@ BOOL LLDataPackerAsciiBuffer::packUUID(const LLUUID &value, const char *name)
     {
         numCopied = getBufferSize()-getCurrentSize();
         LL_WARNS() << "LLDataPackerAsciiBuffer::packUUID: truncated: " << LL_ENDL;
-        success = FALSE;
+        success = false;
     }
     mCurBufferp += numCopied;
     return success;
 }
 
 
-BOOL LLDataPackerAsciiBuffer::unpackUUID(LLUUID &value, const char *name)
+bool LLDataPackerAsciiBuffer::unpackUUID(LLUUID &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];  /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     char tmp_str[64];   /* Flawfinder: ignore */
@@ -1514,9 +1514,9 @@ void LLDataPackerAsciiBuffer::writeIndentedName(const char *name)
     }
 }
 
-BOOL LLDataPackerAsciiBuffer::getValueStr(const char *name, char *out_value, S32 value_len)
+bool LLDataPackerAsciiBuffer::getValueStr(const char *name, char *out_value, S32 value_len)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char buffer[DP_BUFSIZE];    /* Flawfinder: ignore */
     char keyword[DP_BUFSIZE];   /* Flawfinder: ignore */
     char value[DP_BUFSIZE]; /* Flawfinder: ignore */
@@ -1537,7 +1537,7 @@ BOOL LLDataPackerAsciiBuffer::getValueStr(const char *name, char *out_value, S32
         if (strcmp(keyword, name))
         {
             LL_WARNS() << "Data packer expecting keyword of type " << name << ", got " << keyword << " instead!" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
     else
@@ -1572,9 +1572,9 @@ std::string convertF32ToString(F32 val)
 //---------------------------------------------------------------------------
 // LLDataPackerAsciiFile implementation
 //---------------------------------------------------------------------------
-BOOL LLDataPackerAsciiFile::packString(const std::string& value, const char *name)
+bool LLDataPackerAsciiFile::packString(const std::string& value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -1587,22 +1587,22 @@ BOOL LLDataPackerAsciiFile::packString(const std::string& value, const char *nam
     return success;
 }
 
-BOOL LLDataPackerAsciiFile::unpackString(std::string& value, const char *name)
+bool LLDataPackerAsciiFile::unpackString(std::string& value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE];  /* Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
     value = valuestr;
     return success;
 }
 
 
-BOOL LLDataPackerAsciiFile::packBinaryData(const U8 *value, S32 size, const char *name)
+bool LLDataPackerAsciiFile::packBinaryData(const U8 *value, S32 size, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
 
     if (mFP)
@@ -1634,13 +1634,13 @@ BOOL LLDataPackerAsciiFile::packBinaryData(const U8 *value, S32 size, const char
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackBinaryData(U8 *value, S32 &size, const char *name)
+bool LLDataPackerAsciiFile::unpackBinaryData(U8 *value, S32 &size, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore*/
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     char *cur_pos = &valuestr[0];
@@ -1659,9 +1659,9 @@ BOOL LLDataPackerAsciiFile::unpackBinaryData(U8 *value, S32 &size, const char *n
 }
 
 
-BOOL LLDataPackerAsciiFile::packBinaryDataFixed(const U8 *value, S32 size, const char *name)
+bool LLDataPackerAsciiFile::packBinaryDataFixed(const U8 *value, S32 size, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
 
     if (mFP)
@@ -1688,13 +1688,13 @@ BOOL LLDataPackerAsciiFile::packBinaryDataFixed(const U8 *value, S32 size, const
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackBinaryDataFixed(U8 *value, S32 size, const char *name)
+bool LLDataPackerAsciiFile::unpackBinaryDataFixed(U8 *value, S32 size, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore*/
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     char *cur_pos = &valuestr[0];
@@ -1712,9 +1712,9 @@ BOOL LLDataPackerAsciiFile::unpackBinaryDataFixed(U8 *value, S32 size, const cha
 
 
 
-BOOL LLDataPackerAsciiFile::packU8(const U8 value, const char *name)
+bool LLDataPackerAsciiFile::packU8(const U8 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -1730,13 +1730,13 @@ BOOL LLDataPackerAsciiFile::packU8(const U8 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackU8(U8 &value, const char *name)
+bool LLDataPackerAsciiFile::unpackU8(U8 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     S32 in_val;
@@ -1745,9 +1745,9 @@ BOOL LLDataPackerAsciiFile::unpackU8(U8 &value, const char *name)
     return success;
 }
 
-BOOL LLDataPackerAsciiFile::packU16(const U16 value, const char *name)
+bool LLDataPackerAsciiFile::packU16(const U16 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -1761,13 +1761,13 @@ BOOL LLDataPackerAsciiFile::packU16(const U16 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackU16(U16 &value, const char *name)
+bool LLDataPackerAsciiFile::unpackU16(U16 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     S32 in_val;
@@ -1776,9 +1776,9 @@ BOOL LLDataPackerAsciiFile::unpackU16(U16 &value, const char *name)
     return success;
 }
 
-BOOL LLDataPackerAsciiFile::packS16(const S16 value, const char *name)
+bool LLDataPackerAsciiFile::packS16(const S16 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -1792,13 +1792,13 @@ BOOL LLDataPackerAsciiFile::packS16(const S16 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackS16(S16 &value, const char *name)
+bool LLDataPackerAsciiFile::unpackS16(S16 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     S32 in_val;
@@ -1807,9 +1807,9 @@ BOOL LLDataPackerAsciiFile::unpackS16(S16 &value, const char *name)
     return success;
 }
 
-BOOL LLDataPackerAsciiFile::packU32(const U32 value, const char *name)
+bool LLDataPackerAsciiFile::packU32(const U32 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -1823,13 +1823,13 @@ BOOL LLDataPackerAsciiFile::packU32(const U32 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackU32(U32 &value, const char *name)
+bool LLDataPackerAsciiFile::unpackU32(U32 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%u", &value);
@@ -1837,9 +1837,9 @@ BOOL LLDataPackerAsciiFile::unpackU32(U32 &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::packS32(const S32 value, const char *name)
+bool LLDataPackerAsciiFile::packS32(const S32 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -1853,13 +1853,13 @@ BOOL LLDataPackerAsciiFile::packS32(const S32 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackS32(S32 &value, const char *name)
+bool LLDataPackerAsciiFile::unpackS32(S32 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%d", &value);
@@ -1867,9 +1867,9 @@ BOOL LLDataPackerAsciiFile::unpackS32(S32 &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::packF32(const F32 value, const char *name)
+bool LLDataPackerAsciiFile::packF32(const F32 value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -1883,13 +1883,13 @@ BOOL LLDataPackerAsciiFile::packF32(const F32 value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackF32(F32 &value, const char *name)
+bool LLDataPackerAsciiFile::unpackF32(F32 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%f", &value);
@@ -1897,9 +1897,9 @@ BOOL LLDataPackerAsciiFile::unpackF32(F32 &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::packColor4(const LLColor4 &value, const char *name)
+bool LLDataPackerAsciiFile::packColor4(const LLColor4 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -1913,22 +1913,22 @@ BOOL LLDataPackerAsciiFile::packColor4(const LLColor4 &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackColor4(LLColor4 &value, const char *name)
+bool LLDataPackerAsciiFile::unpackColor4(LLColor4 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%f %f %f %f", &value.mV[0], &value.mV[1], &value.mV[2], &value.mV[3]);
     return success;
 }
 
-BOOL LLDataPackerAsciiFile::packColor4U(const LLColor4U &value, const char *name)
+bool LLDataPackerAsciiFile::packColor4U(const LLColor4U &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -1942,13 +1942,13 @@ BOOL LLDataPackerAsciiFile::packColor4U(const LLColor4U &value, const char *name
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackColor4U(LLColor4U &value, const char *name)
+bool LLDataPackerAsciiFile::unpackColor4U(LLColor4U &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     S32 r, g, b, a;
@@ -1962,9 +1962,9 @@ BOOL LLDataPackerAsciiFile::unpackColor4U(LLColor4U &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::packVector2(const LLVector2 &value, const char *name)
+bool LLDataPackerAsciiFile::packVector2(const LLVector2 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -1978,13 +1978,13 @@ BOOL LLDataPackerAsciiFile::packVector2(const LLVector2 &value, const char *name
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackVector2(LLVector2 &value, const char *name)
+bool LLDataPackerAsciiFile::unpackVector2(LLVector2 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%f %f", &value.mV[0], &value.mV[1]);
@@ -1992,9 +1992,9 @@ BOOL LLDataPackerAsciiFile::unpackVector2(LLVector2 &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::packVector3(const LLVector3 &value, const char *name)
+bool LLDataPackerAsciiFile::packVector3(const LLVector3 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -2008,22 +2008,22 @@ BOOL LLDataPackerAsciiFile::packVector3(const LLVector3 &value, const char *name
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackVector3(LLVector3 &value, const char *name)
+bool LLDataPackerAsciiFile::unpackVector3(LLVector3 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%f %f %f", &value.mV[0], &value.mV[1], &value.mV[2]);
     return success;
 }
 
-BOOL LLDataPackerAsciiFile::packVector4(const LLVector4 &value, const char *name)
+bool LLDataPackerAsciiFile::packVector4(const LLVector4 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     if (mFP)
     {
@@ -2037,13 +2037,13 @@ BOOL LLDataPackerAsciiFile::packVector4(const LLVector4 &value, const char *name
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackVector4(LLVector4 &value, const char *name)
+bool LLDataPackerAsciiFile::unpackVector4(LLVector4 &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     sscanf(valuestr,"%f %f %f %f", &value.mV[0], &value.mV[1], &value.mV[2], &value.mV[3]);
@@ -2051,9 +2051,9 @@ BOOL LLDataPackerAsciiFile::unpackVector4(LLVector4 &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::packUUID(const LLUUID &value, const char *name)
+bool LLDataPackerAsciiFile::packUUID(const LLUUID &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     writeIndentedName(name);
     std::string tmp_str;
     value.toString(tmp_str);
@@ -2069,13 +2069,13 @@ BOOL LLDataPackerAsciiFile::packUUID(const LLUUID &value, const char *name)
 }
 
 
-BOOL LLDataPackerAsciiFile::unpackUUID(LLUUID &value, const char *name)
+bool LLDataPackerAsciiFile::unpackUUID(LLUUID &value, const char *name)
 {
-    BOOL success = TRUE;
+    bool success = true;
     char valuestr[DP_BUFSIZE]; /*Flawfinder: ignore */
     if (!getValueStr(name, valuestr, DP_BUFSIZE))
     {
-        return FALSE;
+        return false;
     }
 
     char tmp_str[64]; /*Flawfinder: ignore */
@@ -2107,9 +2107,9 @@ void LLDataPackerAsciiFile::writeIndentedName(const char *name)
     }
 }
 
-BOOL LLDataPackerAsciiFile::getValueStr(const char *name, char *out_value, S32 value_len)
+bool LLDataPackerAsciiFile::getValueStr(const char *name, char *out_value, S32 value_len)
 {
-    BOOL success = FALSE;
+    bool success = false;
     char buffer[DP_BUFSIZE]; /*Flawfinder: ignore*/
     char keyword[DP_BUFSIZE]; /*Flawfinder: ignore*/
     char value[DP_BUFSIZE]; /*Flawfinder: ignore*/
@@ -2124,7 +2124,7 @@ BOOL LLDataPackerAsciiFile::getValueStr(const char *name, char *out_value, S32 v
         if (0 != fgetpos(mFP, &last_pos)) // 0==success for fgetpos
         {
             LL_WARNS() << "Data packer failed to fgetpos" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         if (fgets(buffer, DP_BUFSIZE, mFP) == NULL)
@@ -2138,20 +2138,20 @@ BOOL LLDataPackerAsciiFile::getValueStr(const char *name, char *out_value, S32 v
         {
             LL_WARNS() << "Data packer could not get the keyword!" << LL_ENDL;
             fsetpos(mFP, &last_pos);
-            return FALSE;
+            return false;
         }
         if (strcmp(keyword, name))
         {
             LL_WARNS() << "Data packer expecting keyword of type " << name << ", got " << keyword << " instead!" << LL_ENDL;
             fsetpos(mFP, &last_pos);
-            return FALSE;
+            return false;
         }
 
         S32 in_value_len = (S32)strlen(value)+1; /*Flawfinder: ignore*/
         S32 min_len = llmin(in_value_len, value_len);
         memcpy(out_value, value, min_len); /*Flawfinder: ignore*/
         out_value[min_len-1] = 0;
-        success = TRUE;
+        success = true;
     }
     else if (mInputStream)
     {
@@ -2161,19 +2161,19 @@ BOOL LLDataPackerAsciiFile::getValueStr(const char *name, char *out_value, S32 v
         if (!keyword[0])
         {
             LL_WARNS() << "Data packer could not get the keyword!" << LL_ENDL;
-            return FALSE;
+            return false;
         }
         if (strcmp(keyword, name))
         {
             LL_WARNS() << "Data packer expecting keyword of type " << name << ", got " << keyword << " instead!" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         S32 in_value_len = (S32)strlen(value)+1; /*Flawfinder: ignore*/
         S32 min_len = llmin(in_value_len, value_len);
         memcpy(out_value, value, min_len); /*Flawfinder: ignore*/
         out_value[min_len-1] = 0;
-        success = TRUE;
+        success = true;
     }
 
     return success;
diff --git a/indra/llmessage/lldatapacker.h b/indra/llmessage/lldatapacker.h
index 9869326c12..167c102b43 100644
--- a/indra/llmessage/lldatapacker.h
+++ b/indra/llmessage/lldatapacker.h
@@ -43,72 +43,72 @@ public:
     virtual void        reset();
     virtual void        dumpBufferToLog();
 
-    virtual BOOL        hasNext() const = 0;
+    virtual bool        hasNext() const = 0;
 
-    virtual BOOL        packString(const std::string& value, const char *name) = 0;
-    virtual BOOL        unpackString(std::string& value, const char *name) = 0;
+    virtual bool        packString(const std::string& value, const char *name) = 0;
+    virtual bool        unpackString(std::string& value, const char *name) = 0;
 
-    virtual BOOL        packBinaryData(const U8 *value, S32 size, const char *name) = 0;
-    virtual BOOL        unpackBinaryData(U8 *value, S32 &size, const char *name) = 0;
+    virtual bool        packBinaryData(const U8 *value, S32 size, const char *name) = 0;
+    virtual bool        unpackBinaryData(U8 *value, S32 &size, const char *name) = 0;
 
     // Constant size binary data packing
-    virtual BOOL        packBinaryDataFixed(const U8 *value, S32 size, const char *name) = 0;
-    virtual BOOL        unpackBinaryDataFixed(U8 *value, S32 size, const char *name) = 0;
+    virtual bool        packBinaryDataFixed(const U8 *value, S32 size, const char *name) = 0;
+    virtual bool        unpackBinaryDataFixed(U8 *value, S32 size, const char *name) = 0;
 
-    virtual BOOL        packU8(const U8 value, const char *name) = 0;
-    virtual BOOL        unpackU8(U8 &value, const char *name) = 0;
+    virtual bool        packU8(const U8 value, const char *name) = 0;
+    virtual bool        unpackU8(U8 &value, const char *name) = 0;
 
-    virtual BOOL        packU16(const U16 value, const char *name) = 0;
-    virtual BOOL        unpackU16(U16 &value, const char *name) = 0;
-    BOOL                unpackU16s(U16 *value, S32 count, const char *name);
+    virtual bool        packU16(const U16 value, const char *name) = 0;
+    virtual bool        unpackU16(U16 &value, const char *name) = 0;
+    bool                unpackU16s(U16 *value, S32 count, const char *name);
 
-    virtual BOOL        packS16(const S16 value, const char *name) = 0;
-    virtual BOOL        unpackS16(S16 &value, const char *name) = 0;
-    BOOL                unpackS16s(S16 *value, S32 count, const char *name);
+    virtual bool        packS16(const S16 value, const char *name) = 0;
+    virtual bool        unpackS16(S16 &value, const char *name) = 0;
+    bool                unpackS16s(S16 *value, S32 count, const char *name);
 
-    virtual BOOL        packU32(const U32 value, const char *name) = 0;
-    virtual BOOL        unpackU32(U32 &value, const char *name) = 0;
+    virtual bool        packU32(const U32 value, const char *name) = 0;
+    virtual bool        unpackU32(U32 &value, const char *name) = 0;
 
-    virtual BOOL        packS32(const S32 value, const char *name) = 0;
-    virtual BOOL        unpackS32(S32 &value, const char *name) = 0;
+    virtual bool        packS32(const S32 value, const char *name) = 0;
+    virtual bool        unpackS32(S32 &value, const char *name) = 0;
 
-    virtual BOOL        packF32(const F32 value, const char *name) = 0;
-    virtual BOOL        unpackF32(F32 &value, const char *name) = 0;
-    BOOL                unpackF32s(F32 *values, S32 count, const char *name);
+    virtual bool        packF32(const F32 value, const char *name) = 0;
+    virtual bool        unpackF32(F32 &value, const char *name) = 0;
+    bool                unpackF32s(F32 *values, S32 count, const char *name);
 
     // Packs a float into an integer, using the given size
     // and picks the right U* data type to pack into.
-    BOOL                packFixed(const F32 value, const char *name,
-                                const BOOL is_signed, const U32 int_bits, const U32 frac_bits);
-    BOOL                unpackFixed(F32 &value, const char *name,
-                                const BOOL is_signed, const U32 int_bits, const U32 frac_bits);
+    bool                packFixed(const F32 value, const char *name,
+                                const bool is_signed, const U32 int_bits, const U32 frac_bits);
+    bool                unpackFixed(F32 &value, const char *name,
+                                const bool is_signed, const U32 int_bits, const U32 frac_bits);
 
-    virtual BOOL        packColor4(const LLColor4 &value, const char *name) = 0;
-    virtual BOOL        unpackColor4(LLColor4 &value, const char *name) = 0;
+    virtual bool        packColor4(const LLColor4 &value, const char *name) = 0;
+    virtual bool        unpackColor4(LLColor4 &value, const char *name) = 0;
 
-    virtual BOOL        packColor4U(const LLColor4U &value, const char *name) = 0;
-    virtual BOOL        unpackColor4U(LLColor4U &value, const char *name) = 0;
-    BOOL                unpackColor4Us(LLColor4U *values, S32 count, const char *name);
+    virtual bool        packColor4U(const LLColor4U &value, const char *name) = 0;
+    virtual bool        unpackColor4U(LLColor4U &value, const char *name) = 0;
+    bool                unpackColor4Us(LLColor4U *values, S32 count, const char *name);
 
-    virtual BOOL        packVector2(const LLVector2 &value, const char *name) = 0;
-    virtual BOOL        unpackVector2(LLVector2 &value, const char *name) = 0;
+    virtual bool        packVector2(const LLVector2 &value, const char *name) = 0;
+    virtual bool        unpackVector2(LLVector2 &value, const char *name) = 0;
 
-    virtual BOOL        packVector3(const LLVector3 &value, const char *name) = 0;
-    virtual BOOL        unpackVector3(LLVector3 &value, const char *name) = 0;
+    virtual bool        packVector3(const LLVector3 &value, const char *name) = 0;
+    virtual bool        unpackVector3(LLVector3 &value, const char *name) = 0;
 
-    virtual BOOL        packVector4(const LLVector4 &value, const char *name) = 0;
-    virtual BOOL        unpackVector4(LLVector4 &value, const char *name) = 0;
+    virtual bool        packVector4(const LLVector4 &value, const char *name) = 0;
+    virtual bool        unpackVector4(LLVector4 &value, const char *name) = 0;
 
-    virtual BOOL        packUUID(const LLUUID &value, const char *name) = 0;
-    virtual BOOL        unpackUUID(LLUUID &value, const char *name) = 0;
-    BOOL                unpackUUIDs(LLUUID *values, S32 count, const char *name);
+    virtual bool        packUUID(const LLUUID &value, const char *name) = 0;
+    virtual bool        unpackUUID(LLUUID &value, const char *name) = 0;
+    bool                unpackUUIDs(LLUUID *values, S32 count, const char *name);
             U32         getPassFlags() const    { return mPassFlags; }
             void        setPassFlags(U32 flags) { mPassFlags = flags; }
 protected:
     LLDataPacker();
 protected:
     U32 mPassFlags;
-    BOOL mWriteEnabled; // disable this to do things like determine filesize without actually copying data
+    bool mWriteEnabled; // disable this to do things like determine filesize without actually copying data
 };
 
 class LLDataPackerBinaryBuffer : public LLDataPacker
@@ -120,7 +120,7 @@ public:
         mCurBufferp(bufferp),
         mBufferSize(size)
     {
-        mWriteEnabled = TRUE;
+        mWriteEnabled = true;
     }
 
     LLDataPackerBinaryBuffer()
@@ -131,58 +131,58 @@ public:
     {
     }
 
-    /*virtual*/ BOOL        packString(const std::string& value, const char *name);
-    /*virtual*/ BOOL        unpackString(std::string& value, const char *name);
+    /*virtual*/ bool        packString(const std::string& value, const char *name);
+    /*virtual*/ bool        unpackString(std::string& value, const char *name);
 
-    /*virtual*/ BOOL        packBinaryData(const U8 *value, S32 size, const char *name);
-    /*virtual*/ BOOL        unpackBinaryData(U8 *value, S32 &size, const char *name);
+    /*virtual*/ bool        packBinaryData(const U8 *value, S32 size, const char *name);
+    /*virtual*/ bool        unpackBinaryData(U8 *value, S32 &size, const char *name);
 
     // Constant size binary data packing
-    /*virtual*/ BOOL        packBinaryDataFixed(const U8 *value, S32 size, const char *name);
-    /*virtual*/ BOOL        unpackBinaryDataFixed(U8 *value, S32 size, const char *name);
+    /*virtual*/ bool        packBinaryDataFixed(const U8 *value, S32 size, const char *name);
+    /*virtual*/ bool        unpackBinaryDataFixed(U8 *value, S32 size, const char *name);
 
-    /*virtual*/ BOOL        packU8(const U8 value, const char *name);
-    /*virtual*/ BOOL        unpackU8(U8 &value, const char *name);
+    /*virtual*/ bool        packU8(const U8 value, const char *name);
+    /*virtual*/ bool        unpackU8(U8 &value, const char *name);
 
-    /*virtual*/ BOOL        packU16(const U16 value, const char *name);
-    /*virtual*/ BOOL        unpackU16(U16 &value, const char *name);
+    /*virtual*/ bool        packU16(const U16 value, const char *name);
+    /*virtual*/ bool        unpackU16(U16 &value, const char *name);
 
-    /*virtual*/ BOOL        packS16(const S16 value, const char *name);
-    /*virtual*/ BOOL        unpackS16(S16 &value, const char *name);
+    /*virtual*/ bool        packS16(const S16 value, const char *name);
+    /*virtual*/ bool        unpackS16(S16 &value, const char *name);
 
-    /*virtual*/ BOOL        packU32(const U32 value, const char *name);
-    /*virtual*/ BOOL        unpackU32(U32 &value, const char *name);
+    /*virtual*/ bool        packU32(const U32 value, const char *name);
+    /*virtual*/ bool        unpackU32(U32 &value, const char *name);
 
-    /*virtual*/ BOOL        packS32(const S32 value, const char *name);
-    /*virtual*/ BOOL        unpackS32(S32 &value, const char *name);
+    /*virtual*/ bool        packS32(const S32 value, const char *name);
+    /*virtual*/ bool        unpackS32(S32 &value, const char *name);
 
-    /*virtual*/ BOOL        packF32(const F32 value, const char *name);
-    /*virtual*/ BOOL        unpackF32(F32 &value, const char *name);
+    /*virtual*/ bool        packF32(const F32 value, const char *name);
+    /*virtual*/ bool        unpackF32(F32 &value, const char *name);
 
-    /*virtual*/ BOOL        packColor4(const LLColor4 &value, const char *name);
-    /*virtual*/ BOOL        unpackColor4(LLColor4 &value, const char *name);
+    /*virtual*/ bool        packColor4(const LLColor4 &value, const char *name);
+    /*virtual*/ bool        unpackColor4(LLColor4 &value, const char *name);
 
-    /*virtual*/ BOOL        packColor4U(const LLColor4U &value, const char *name);
-    /*virtual*/ BOOL        unpackColor4U(LLColor4U &value, const char *name);
+    /*virtual*/ bool        packColor4U(const LLColor4U &value, const char *name);
+    /*virtual*/ bool        unpackColor4U(LLColor4U &value, const char *name);
 
-    /*virtual*/ BOOL        packVector2(const LLVector2 &value, const char *name);
-    /*virtual*/ BOOL        unpackVector2(LLVector2 &value, const char *name);
+    /*virtual*/ bool        packVector2(const LLVector2 &value, const char *name);
+    /*virtual*/ bool        unpackVector2(LLVector2 &value, const char *name);
 
-    /*virtual*/ BOOL        packVector3(const LLVector3 &value, const char *name);
-    /*virtual*/ BOOL        unpackVector3(LLVector3 &value, const char *name);
+    /*virtual*/ bool        packVector3(const LLVector3 &value, const char *name);
+    /*virtual*/ bool        unpackVector3(LLVector3 &value, const char *name);
 
-    /*virtual*/ BOOL        packVector4(const LLVector4 &value, const char *name);
-    /*virtual*/ BOOL        unpackVector4(LLVector4 &value, const char *name);
+    /*virtual*/ bool        packVector4(const LLVector4 &value, const char *name);
+    /*virtual*/ bool        unpackVector4(LLVector4 &value, const char *name);
 
-    /*virtual*/ BOOL        packUUID(const LLUUID &value, const char *name);
-    /*virtual*/ BOOL        unpackUUID(LLUUID &value, const char *name);
+    /*virtual*/ bool        packUUID(const LLUUID &value, const char *name);
+    /*virtual*/ bool        unpackUUID(LLUUID &value, const char *name);
 
                 S32         getCurrentSize() const  { return (S32)(mCurBufferp - mBufferp); }
                 S32         getBufferSize() const   { return mBufferSize; }
                 const U8*   getBuffer() const   { return mBufferp; }
                 void        reset()             { mCurBufferp = mBufferp; mWriteEnabled = (mCurBufferp != NULL); }
                 void        shift(S32 offset)   { reset(); mCurBufferp += offset;}
-                void        freeBuffer()        { delete [] mBufferp; mBufferp = mCurBufferp = NULL; mBufferSize = 0; mWriteEnabled = FALSE; }
+                void        freeBuffer()        { delete [] mBufferp; mBufferp = mCurBufferp = NULL; mBufferSize = 0; mWriteEnabled = false; }
                 void        assignBuffer(U8 *bufferp, S32 size)
                 {
                     if(mBufferp && mBufferp != bufferp)
@@ -192,31 +192,31 @@ public:
                     mBufferp = bufferp;
                     mCurBufferp = bufferp;
                     mBufferSize = size;
-                    mWriteEnabled = TRUE;
+                    mWriteEnabled = true;
                 }
                 const LLDataPackerBinaryBuffer& operator=(const LLDataPackerBinaryBuffer &a);
 
-    /*virtual*/ BOOL        hasNext() const         { return getCurrentSize() < getBufferSize(); }
+    /*virtual*/ bool        hasNext() const         { return getCurrentSize() < getBufferSize(); }
 
     /*virtual*/ void dumpBufferToLog();
 protected:
-    inline BOOL verifyLength(const S32 data_size, const char *name);
+    inline bool verifyLength(const S32 data_size, const char *name);
 
     U8 *mBufferp;
     U8 *mCurBufferp;
     S32 mBufferSize;
 };
 
-inline BOOL LLDataPackerBinaryBuffer::verifyLength(const S32 data_size, const char *name)
+inline bool LLDataPackerBinaryBuffer::verifyLength(const S32 data_size, const char *name)
 {
     if (mWriteEnabled && (mCurBufferp - mBufferp) > mBufferSize - data_size)
     {
         LL_WARNS() << "Buffer overflow in BinaryBuffer length verify, field name " << name << "!" << LL_ENDL;
         LL_WARNS() << "Current pos: " << (int)(mCurBufferp - mBufferp) << " Buffer size: " << mBufferSize << " Data size: " << data_size << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 class LLDataPackerAsciiBuffer : public LLDataPacker
@@ -228,8 +228,8 @@ public:
         mCurBufferp = bufferp;
         mBufferSize = size;
         mPassFlags = 0;
-        mIncludeNames = FALSE;
-        mWriteEnabled = TRUE;
+        mIncludeNames = false;
+        mWriteEnabled = true;
     }
 
     LLDataPackerAsciiBuffer()
@@ -238,57 +238,57 @@ public:
         mCurBufferp = NULL;
         mBufferSize = 0;
         mPassFlags = 0;
-        mIncludeNames = FALSE;
-        mWriteEnabled = FALSE;
+        mIncludeNames = false;
+        mWriteEnabled = false;
     }
 
-    /*virtual*/ BOOL        packString(const std::string& value, const char *name);
-    /*virtual*/ BOOL        unpackString(std::string& value, const char *name);
+    /*virtual*/ bool        packString(const std::string& value, const char *name);
+    /*virtual*/ bool        unpackString(std::string& value, const char *name);
 
-    /*virtual*/ BOOL        packBinaryData(const U8 *value, S32 size, const char *name);
-    /*virtual*/ BOOL        unpackBinaryData(U8 *value, S32 &size, const char *name);
+    /*virtual*/ bool        packBinaryData(const U8 *value, S32 size, const char *name);
+    /*virtual*/ bool        unpackBinaryData(U8 *value, S32 &size, const char *name);
 
     // Constant size binary data packing
-    /*virtual*/ BOOL        packBinaryDataFixed(const U8 *value, S32 size, const char *name);
-    /*virtual*/ BOOL        unpackBinaryDataFixed(U8 *value, S32 size, const char *name);
+    /*virtual*/ bool        packBinaryDataFixed(const U8 *value, S32 size, const char *name);
+    /*virtual*/ bool        unpackBinaryDataFixed(U8 *value, S32 size, const char *name);
 
-    /*virtual*/ BOOL        packU8(const U8 value, const char *name);
-    /*virtual*/ BOOL        unpackU8(U8 &value, const char *name);
+    /*virtual*/ bool        packU8(const U8 value, const char *name);
+    /*virtual*/ bool        unpackU8(U8 &value, const char *name);
 
-    /*virtual*/ BOOL        packU16(const U16 value, const char *name);
-    /*virtual*/ BOOL        unpackU16(U16 &value, const char *name);
+    /*virtual*/ bool        packU16(const U16 value, const char *name);
+    /*virtual*/ bool        unpackU16(U16 &value, const char *name);
 
-    /*virtual*/ BOOL        packS16(const S16 value, const char *name);
-    /*virtual*/ BOOL        unpackS16(S16 &value, const char *name);
+    /*virtual*/ bool        packS16(const S16 value, const char *name);
+    /*virtual*/ bool        unpackS16(S16 &value, const char *name);
 
-    /*virtual*/ BOOL        packU32(const U32 value, const char *name);
-    /*virtual*/ BOOL        unpackU32(U32 &value, const char *name);
+    /*virtual*/ bool        packU32(const U32 value, const char *name);
+    /*virtual*/ bool        unpackU32(U32 &value, const char *name);
 
-    /*virtual*/ BOOL        packS32(const S32 value, const char *name);
-    /*virtual*/ BOOL        unpackS32(S32 &value, const char *name);
+    /*virtual*/ bool        packS32(const S32 value, const char *name);
+    /*virtual*/ bool        unpackS32(S32 &value, const char *name);
 
-    /*virtual*/ BOOL        packF32(const F32 value, const char *name);
-    /*virtual*/ BOOL        unpackF32(F32 &value, const char *name);
+    /*virtual*/ bool        packF32(const F32 value, const char *name);
+    /*virtual*/ bool        unpackF32(F32 &value, const char *name);
 
-    /*virtual*/ BOOL        packColor4(const LLColor4 &value, const char *name);
-    /*virtual*/ BOOL        unpackColor4(LLColor4 &value, const char *name);
+    /*virtual*/ bool        packColor4(const LLColor4 &value, const char *name);
+    /*virtual*/ bool        unpackColor4(LLColor4 &value, const char *name);
 
-    /*virtual*/ BOOL        packColor4U(const LLColor4U &value, const char *name);
-    /*virtual*/ BOOL        unpackColor4U(LLColor4U &value, const char *name);
+    /*virtual*/ bool        packColor4U(const LLColor4U &value, const char *name);
+    /*virtual*/ bool        unpackColor4U(LLColor4U &value, const char *name);
 
-    /*virtual*/ BOOL        packVector2(const LLVector2 &value, const char *name);
-    /*virtual*/ BOOL        unpackVector2(LLVector2 &value, const char *name);
+    /*virtual*/ bool        packVector2(const LLVector2 &value, const char *name);
+    /*virtual*/ bool        unpackVector2(LLVector2 &value, const char *name);
 
-    /*virtual*/ BOOL        packVector3(const LLVector3 &value, const char *name);
-    /*virtual*/ BOOL        unpackVector3(LLVector3 &value, const char *name);
+    /*virtual*/ bool        packVector3(const LLVector3 &value, const char *name);
+    /*virtual*/ bool        unpackVector3(LLVector3 &value, const char *name);
 
-    /*virtual*/ BOOL        packVector4(const LLVector4 &value, const char *name);
-    /*virtual*/ BOOL        unpackVector4(LLVector4 &value, const char *name);
+    /*virtual*/ bool        packVector4(const LLVector4 &value, const char *name);
+    /*virtual*/ bool        unpackVector4(LLVector4 &value, const char *name);
 
-    /*virtual*/ BOOL        packUUID(const LLUUID &value, const char *name);
-    /*virtual*/ BOOL        unpackUUID(LLUUID &value, const char *name);
+    /*virtual*/ bool        packUUID(const LLUUID &value, const char *name);
+    /*virtual*/ bool        unpackUUID(LLUUID &value, const char *name);
 
-    void        setIncludeNames(BOOL b) { mIncludeNames = b; }
+    void        setIncludeNames(bool b) { mIncludeNames = b; }
 
     // Include the trailing NULL so it's always a valid string
     S32         getCurrentSize() const  { return (S32)(mCurBufferp - mBufferp) + 1; }
@@ -296,7 +296,7 @@ public:
     S32         getBufferSize() const   { return mBufferSize; }
     /*virtual*/ void        reset()                 { mCurBufferp = mBufferp; mWriteEnabled = (mCurBufferp != NULL); }
 
-    /*virtual*/ BOOL        hasNext() const         { return getCurrentSize() < getBufferSize(); }
+    /*virtual*/ bool        hasNext() const         { return getCurrentSize() < getBufferSize(); }
 
     inline void freeBuffer();
     inline void assignBuffer(char* bufferp, S32 size);
@@ -304,15 +304,15 @@ public:
 
 protected:
     void writeIndentedName(const char *name);
-    BOOL getValueStr(const char *name, char *out_value, const S32 value_len);
+    bool getValueStr(const char *name, char *out_value, const S32 value_len);
 
 protected:
-    inline BOOL verifyLength(const S32 data_size, const char *name);
+    inline bool verifyLength(const S32 data_size, const char *name);
 
     char *mBufferp;
     char *mCurBufferp;
     S32 mBufferSize;
-    BOOL mIncludeNames; // useful for debugging, print the name of each field
+    bool mIncludeNames; // useful for debugging, print the name of each field
 };
 
 inline void LLDataPackerAsciiBuffer::freeBuffer()
@@ -320,7 +320,7 @@ inline void LLDataPackerAsciiBuffer::freeBuffer()
     delete [] mBufferp;
     mBufferp = mCurBufferp = NULL;
     mBufferSize = 0;
-    mWriteEnabled = FALSE;
+    mWriteEnabled = false;
 }
 
 inline void LLDataPackerAsciiBuffer::assignBuffer(char* bufferp, S32 size)
@@ -328,19 +328,19 @@ inline void LLDataPackerAsciiBuffer::assignBuffer(char* bufferp, S32 size)
     mBufferp = bufferp;
     mCurBufferp = bufferp;
     mBufferSize = size;
-    mWriteEnabled = TRUE;
+    mWriteEnabled = true;
 }
 
-inline BOOL LLDataPackerAsciiBuffer::verifyLength(const S32 data_size, const char *name)
+inline bool LLDataPackerAsciiBuffer::verifyLength(const S32 data_size, const char *name)
 {
     if (mWriteEnabled && (mCurBufferp - mBufferp) > mBufferSize - data_size)
     {
         LL_WARNS() << "Buffer overflow in AsciiBuffer length verify, field name " << name << "!" << LL_ENDL;
         LL_WARNS() << "Current pos: " << (int)(mCurBufferp - mBufferp) << " Buffer size: " << mBufferSize << " Data size: " << data_size << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 class LLDataPackerAsciiFile : public LLDataPacker
@@ -362,7 +362,7 @@ public:
         mOutputStream(&output_stream),
         mInputStream(NULL)
     {
-        mWriteEnabled = TRUE;
+        mWriteEnabled = true;
     }
 
     LLDataPackerAsciiFile(std::istream& input_stream, const S32 indent = 2)
@@ -374,55 +374,55 @@ public:
     {
     }
 
-    /*virtual*/ BOOL        packString(const std::string& value, const char *name);
-    /*virtual*/ BOOL        unpackString(std::string& value, const char *name);
+    /*virtual*/ bool        packString(const std::string& value, const char *name);
+    /*virtual*/ bool        unpackString(std::string& value, const char *name);
 
-    /*virtual*/ BOOL        packBinaryData(const U8 *value, S32 size, const char *name);
-    /*virtual*/ BOOL        unpackBinaryData(U8 *value, S32 &size, const char *name);
+    /*virtual*/ bool        packBinaryData(const U8 *value, S32 size, const char *name);
+    /*virtual*/ bool        unpackBinaryData(U8 *value, S32 &size, const char *name);
 
-    /*virtual*/ BOOL        packBinaryDataFixed(const U8 *value, S32 size, const char *name);
-    /*virtual*/ BOOL        unpackBinaryDataFixed(U8 *value, S32 size, const char *name);
+    /*virtual*/ bool        packBinaryDataFixed(const U8 *value, S32 size, const char *name);
+    /*virtual*/ bool        unpackBinaryDataFixed(U8 *value, S32 size, const char *name);
 
-    /*virtual*/ BOOL        packU8(const U8 value, const char *name);
-    /*virtual*/ BOOL        unpackU8(U8 &value, const char *name);
+    /*virtual*/ bool        packU8(const U8 value, const char *name);
+    /*virtual*/ bool        unpackU8(U8 &value, const char *name);
 
-    /*virtual*/ BOOL        packU16(const U16 value, const char *name);
-    /*virtual*/ BOOL        unpackU16(U16 &value, const char *name);
+    /*virtual*/ bool        packU16(const U16 value, const char *name);
+    /*virtual*/ bool        unpackU16(U16 &value, const char *name);
 
-    /*virtual*/ BOOL        packS16(const S16 value, const char *name);
-    /*virtual*/ BOOL        unpackS16(S16 &value, const char *name);
+    /*virtual*/ bool        packS16(const S16 value, const char *name);
+    /*virtual*/ bool        unpackS16(S16 &value, const char *name);
 
-    /*virtual*/ BOOL        packU32(const U32 value, const char *name);
-    /*virtual*/ BOOL        unpackU32(U32 &value, const char *name);
+    /*virtual*/ bool        packU32(const U32 value, const char *name);
+    /*virtual*/ bool        unpackU32(U32 &value, const char *name);
 
-    /*virtual*/ BOOL        packS32(const S32 value, const char *name);
-    /*virtual*/ BOOL        unpackS32(S32 &value, const char *name);
+    /*virtual*/ bool        packS32(const S32 value, const char *name);
+    /*virtual*/ bool        unpackS32(S32 &value, const char *name);
 
-    /*virtual*/ BOOL        packF32(const F32 value, const char *name);
-    /*virtual*/ BOOL        unpackF32(F32 &value, const char *name);
+    /*virtual*/ bool        packF32(const F32 value, const char *name);
+    /*virtual*/ bool        unpackF32(F32 &value, const char *name);
 
-    /*virtual*/ BOOL        packColor4(const LLColor4 &value, const char *name);
-    /*virtual*/ BOOL        unpackColor4(LLColor4 &value, const char *name);
+    /*virtual*/ bool        packColor4(const LLColor4 &value, const char *name);
+    /*virtual*/ bool        unpackColor4(LLColor4 &value, const char *name);
 
-    /*virtual*/ BOOL        packColor4U(const LLColor4U &value, const char *name);
-    /*virtual*/ BOOL        unpackColor4U(LLColor4U &value, const char *name);
+    /*virtual*/ bool        packColor4U(const LLColor4U &value, const char *name);
+    /*virtual*/ bool        unpackColor4U(LLColor4U &value, const char *name);
 
-    /*virtual*/ BOOL        packVector2(const LLVector2 &value, const char *name);
-    /*virtual*/ BOOL        unpackVector2(LLVector2 &value, const char *name);
+    /*virtual*/ bool        packVector2(const LLVector2 &value, const char *name);
+    /*virtual*/ bool        unpackVector2(LLVector2 &value, const char *name);
 
-    /*virtual*/ BOOL        packVector3(const LLVector3 &value, const char *name);
-    /*virtual*/ BOOL        unpackVector3(LLVector3 &value, const char *name);
+    /*virtual*/ bool        packVector3(const LLVector3 &value, const char *name);
+    /*virtual*/ bool        unpackVector3(LLVector3 &value, const char *name);
 
-    /*virtual*/ BOOL        packVector4(const LLVector4 &value, const char *name);
-    /*virtual*/ BOOL        unpackVector4(LLVector4 &value, const char *name);
+    /*virtual*/ bool        packVector4(const LLVector4 &value, const char *name);
+    /*virtual*/ bool        unpackVector4(LLVector4 &value, const char *name);
 
-    /*virtual*/ BOOL        packUUID(const LLUUID &value, const char *name);
-    /*virtual*/ BOOL        unpackUUID(LLUUID &value, const char *name);
+    /*virtual*/ bool        packUUID(const LLUUID &value, const char *name);
+    /*virtual*/ bool        unpackUUID(LLUUID &value, const char *name);
 protected:
     void writeIndentedName(const char *name);
-    BOOL getValueStr(const char *name, char *out_value, const S32 value_len);
+    bool getValueStr(const char *name, char *out_value, const S32 value_len);
 
-    /*virtual*/ BOOL        hasNext() const         { return true; }
+    /*virtual*/ bool        hasNext() const         { return true; }
 
 protected:
     S32 mIndent;
diff --git a/indra/llmessage/llfiltersd2xmlrpc.cpp b/indra/llmessage/llfiltersd2xmlrpc.cpp
index df78652361..84b56d54bf 100644
--- a/indra/llmessage/llfiltersd2xmlrpc.cpp
+++ b/indra/llmessage/llfiltersd2xmlrpc.cpp
@@ -274,12 +274,12 @@ void LLFilterSD2XMLRPC::streamOut(std::ostream& ostr, const LLSD& sd)
         if(!buffer.empty())
         {
             // *TODO: convert to LLBase64
-            int b64_buffer_length = apr_base64_encode_len(buffer.size());
+            int b64_buffer_length = apr_base64_encode_len(static_cast<int>(buffer.size()));
             char* b64_buffer = new char[b64_buffer_length];
             b64_buffer_length = apr_base64_encode_binary(
                 b64_buffer,
                 &buffer[0],
-                buffer.size());
+                static_cast<int>(buffer.size()));
             ostr.write(b64_buffer, b64_buffer_length - 1);
             delete[] b64_buffer;
         }
diff --git a/indra/llmessage/llhost.cpp b/indra/llmessage/llhost.cpp
index fe0b594d39..ace316512f 100644
--- a/indra/llmessage/llhost.cpp
+++ b/indra/llmessage/llhost.cpp
@@ -103,7 +103,7 @@ std::string LLHost::getHostName() const
     }
 }
 
-BOOL LLHost::setHostByName(const std::string& hostname)
+bool LLHost::setHostByName(const std::string& hostname)
 {
     hostent *he;
     std::string local_name(hostname);
@@ -123,7 +123,7 @@ BOOL LLHost::setHostByName(const std::string& hostname)
     if (he)
     {
         mIP = *(U32 *)he->h_addr_list[0];
-        return TRUE;
+        return true;
     }
     else
     {
@@ -147,7 +147,7 @@ BOOL LLHost::setHostByName(const std::string& hostname)
                 LL_WARNS() << "LLHost::setAddress(): unknown error - " << error_number << LL_ENDL;
                 break;
         }
-        return FALSE;
+        return false;
     }
 }
 
diff --git a/indra/llmessage/llhost.h b/indra/llmessage/llhost.h
index 613c81168f..6824fa3d78 100644
--- a/indra/llmessage/llhost.h
+++ b/indra/llmessage/llhost.h
@@ -80,7 +80,7 @@ public:
     void    setAddress( const std::string& ipstr )      { mIP = ip_string_to_u32(ipstr.c_str()); }
     void    setAddress( U32 ip )                { mIP = ip; }
     void    setPort( U32 port )                 { mPort = port; }
-    BOOL    setHostByName(const std::string& hname);
+    bool    setHostByName(const std::string& hname);
 
     LLHost& operator=(const LLHost &rhs);
     void    invalidate()                        { mIP = INVALID_HOST_IP_ADDRESS; mPort = INVALID_PORT;};
diff --git a/indra/llmessage/llinstantmessage.cpp b/indra/llmessage/llinstantmessage.cpp
index 8708552122..4c62c07fcb 100644
--- a/indra/llmessage/llinstantmessage.cpp
+++ b/indra/llmessage/llinstantmessage.cpp
@@ -54,7 +54,7 @@ const S32 IM_TTL = 1;
 void pack_instant_message(
     LLMessageSystem* msg,
     const LLUUID& from_id,
-    BOOL from_group,
+    bool from_group,
     const LLUUID& session_id,
     const LLUUID& to_id,
     const std::string& name,
@@ -93,7 +93,7 @@ void pack_instant_message(
 void pack_instant_message_block(
     LLMessageSystem* msg,
     const LLUUID& from_id,
-    BOOL from_group,
+    bool from_group,
     const LLUUID& session_id,
     const LLUUID& to_id,
     const std::string& name,
diff --git a/indra/llmessage/llinstantmessage.h b/indra/llmessage/llinstantmessage.h
index feb07c6b0f..d413e81c90 100644
--- a/indra/llmessage/llinstantmessage.h
+++ b/indra/llmessage/llinstantmessage.h
@@ -180,7 +180,7 @@ extern const S32 IM_TTL;
 void pack_instant_message(
     LLMessageSystem* msgsystem,
     const LLUUID& from_id,
-    BOOL from_group,
+    bool from_group,
     const LLUUID& session_id,
     const LLUUID& to_id,
     const std::string& name,
@@ -198,7 +198,7 @@ void pack_instant_message(
 void pack_instant_message_block(
     LLMessageSystem* msgsystem,
     const LLUUID& from_id,
-    BOOL from_group,
+    bool from_group,
     const LLUUID& session_id,
     const LLUUID& to_id,
     const std::string& name,
diff --git a/indra/llmessage/lliohttpserver.cpp b/indra/llmessage/lliohttpserver.cpp
index 9791a20743..e562f09844 100644
--- a/indra/llmessage/lliohttpserver.cpp
+++ b/indra/llmessage/lliohttpserver.cpp
@@ -494,7 +494,7 @@ LLIOPipe::EStatus LLHTTPResponseHeader::process_impl(
         LLChangeChannel change(channels.in(), channels.out());
         std::for_each(buffer->beginSegment(), buffer->endSegment(), change);
         std::string header = ostr.str();
-        buffer->prepend(channels.out(), (U8*)header.c_str(), header.size());
+        buffer->prepend(channels.out(), (U8*)header.c_str(), static_cast<S32>(header.size()));
         PUMP_DEBUG;
         return STATUS_DONE;
     }
diff --git a/indra/llmessage/lliosocket.cpp b/indra/llmessage/lliosocket.cpp
index a14d10fe5f..f2192acee0 100644
--- a/indra/llmessage/lliosocket.cpp
+++ b/indra/llmessage/lliosocket.cpp
@@ -346,7 +346,7 @@ LLIOPipe::EStatus LLIOSocketReader::process_impl(
         PUMP_DEBUG;
         len = READ_BUFFER_SIZE;
         status = apr_socket_recv(mSource->getSocket(), read_buf, &len);
-        buffer->append(channels.out(), (U8*)read_buf, len);
+        buffer->append(channels.out(), (U8*)read_buf, static_cast<S32>(len));
     } while((APR_SUCCESS == status) && (READ_BUFFER_SIZE == len));
     LL_DEBUGS() << "socket read status: " << status << LL_ENDL;
     LLIOPipe::EStatus rv = STATUS_OK;
diff --git a/indra/llmessage/llmail.cpp b/indra/llmessage/llmail.cpp
index 4e5cf8ed48..9e10a356db 100644
--- a/indra/llmessage/llmail.cpp
+++ b/indra/llmessage/llmail.cpp
@@ -99,10 +99,10 @@ void disconnect_smtp()
     }
 }
 
-// Returns TRUE on success.
+// Returns true on success.
 // message should NOT be SMTP escaped.
 // static
-BOOL LLMail::send(
+bool LLMail::send(
     const char* from_name,
     const char* from_address,
     const char* to_name,
@@ -120,7 +120,7 @@ BOOL LLMail::send(
         headers);
     if(header.empty())
     {
-        return FALSE;
+        return false;
     }
 
     std::string message_str;
@@ -129,8 +129,8 @@ BOOL LLMail::send(
         message_str = message;
     }
     bool rv = send(header, message_str, to_address, from_address);
-    if(rv) return TRUE;
-    return FALSE;
+    if(rv) return true;
+    return false;
 }
 
 // static
@@ -273,7 +273,7 @@ bool LLMail::send(
     std::string good_string = "\n..\n";
     while (1)
     {
-        int index = message.find(bad_string);
+        auto index = message.find(bad_string);
         if (index == std::string::npos) break;
         message.replace(index, bad_string.size(), good_string);
     }
diff --git a/indra/llmessage/llmail.h b/indra/llmessage/llmail.h
index f437eb4db8..d67b89d1ea 100644
--- a/indra/llmessage/llmail.h
+++ b/indra/llmessage/llmail.h
@@ -48,7 +48,7 @@ public:
      * @param to_address The email recipient address
      * @param subject The subject of the email
      * @param headers optional X-Foo headers in an llsd map.
-     * @return Returns TRUE if the call succeeds, FALSE otherwise.
+     * @return Returns true if the call succeeds, false otherwise.
      *
      * Results in:
      * From: "from_name" <from_address>
@@ -57,7 +57,7 @@ public:
      *
      * message
      */
-    static BOOL send(
+    static bool send(
         const char* from_name,
         const char* from_address,
         const char* to_name,
diff --git a/indra/llmessage/llmessagebuilder.h b/indra/llmessage/llmessagebuilder.h
index b35e973192..3f04857945 100644
--- a/indra/llmessage/llmessagebuilder.h
+++ b/indra/llmessage/llmessagebuilder.h
@@ -49,14 +49,14 @@ public:
     virtual void newMessage(const char* name) = 0;
 
     virtual void nextBlock(const char* blockname) = 0;
-    virtual BOOL removeLastBlock() = 0; // TODO: babbage: remove this horror
+    virtual bool removeLastBlock() = 0; // TODO: babbage: remove this horror
 
     /** All add* methods expect pointers to canonical strings. */
     virtual void addBinaryData(
         const char* varname,
         const void* data,
         S32 size) = 0;
-    virtual void addBOOL(const char* varname, BOOL b) = 0;
+    virtual void addBOOL(const char* varname, bool b) = 0;
     virtual void addS8(const char* varname, S8 s) = 0;
     virtual void addU8(const char* varname, U8 u) = 0;
     virtual void addS16(const char* varname, S16 i) = 0;
@@ -76,12 +76,12 @@ public:
     virtual void addString(const char* varname, const char* s) = 0;
     virtual void addString(const char* varname, const std::string& s) = 0;
 
-    virtual BOOL isMessageFull(const char* blockname) const = 0;
+    virtual bool isMessageFull(const char* blockname) const = 0;
     virtual void compressMessage(U8*& buf_ptr, U32& buffer_length) = 0;
     virtual S32 getMessageSize() = 0;
 
-    virtual BOOL isBuilt() const = 0;
-    virtual BOOL isClear() const = 0;
+    virtual bool isBuilt() const = 0;
+    virtual bool isClear() const = 0;
     virtual U32 buildMessage(
         U8* buffer,
         U32 buffer_size,
@@ -90,7 +90,7 @@ public:
     virtual void clearMessage() = 0;
 
     // TODO: babbage: remove this horror
-    virtual void setBuilt(BOOL b) = 0;
+    virtual void setBuilt(bool b) = 0;
 
     virtual const char* getMessageName() const = 0;
 
diff --git a/indra/llmessage/llmessagereader.cpp b/indra/llmessage/llmessagereader.cpp
index bed8655cf7..4d4bf679ed 100644
--- a/indra/llmessage/llmessagereader.cpp
+++ b/indra/llmessage/llmessagereader.cpp
@@ -27,7 +27,7 @@
 #include "linden_common.h"
 #include "llmessagereader.h"
 
-static BOOL sTimeDecodes = FALSE;
+static bool sTimeDecodes = false;
 
 static F32 sTimeDecodesSpamThreshold = 0.05f;
 
@@ -38,7 +38,7 @@ LLMessageReader::~LLMessageReader()
 }
 
 //static
-void LLMessageReader::setTimeDecodes(BOOL b)
+void LLMessageReader::setTimeDecodes(bool b)
 {
     sTimeDecodes = b;
 }
@@ -50,7 +50,7 @@ void LLMessageReader::setTimeDecodesSpamThreshold(F32 seconds)
 }
 
 //static
-BOOL LLMessageReader::getTimeDecodes()
+bool LLMessageReader::getTimeDecodes()
 {
     return sTimeDecodes;
 }
diff --git a/indra/llmessage/llmessagereader.h b/indra/llmessage/llmessagereader.h
index f4d5a4ce83..5bc9aea5e4 100644
--- a/indra/llmessage/llmessagereader.h
+++ b/indra/llmessage/llmessagereader.h
@@ -52,7 +52,7 @@ class LLMessageReader
 
     /** All get* methods expect pointers to canonical strings. */
     virtual void getBinaryData(const char *blockname, const char *varname, void *datap, S32 size, S32 blocknum = 0, S32 max_size = S32_MAX) = 0;
-    virtual void getBOOL(const char *block, const char *var, BOOL &data, S32 blocknum = 0) = 0;
+    virtual void getBOOL(const char *block, const char *var, bool &data, S32 blocknum = 0) = 0;
     virtual void getS8(const char *block, const char *var, S8 &data, S32 blocknum = 0) = 0;
     virtual void getU8(const char *block, const char *var, U8 &data, S32 blocknum = 0) = 0;
     virtual void getS16(const char *block, const char *var, S16 &data, S32 blocknum = 0) = 0;
@@ -84,8 +84,9 @@ class LLMessageReader
 
     virtual void copyToBuilder(LLMessageBuilder&) const = 0;
 
-    static void setTimeDecodes(BOOL b);
-    static BOOL getTimeDecodes();
+
+    static void setTimeDecodes(bool b);
+    static bool getTimeDecodes();
     static void setTimeDecodesSpamThreshold(F32 seconds);
     static F32 getTimeDecodesSpamThreshold();
 };
diff --git a/indra/llmessage/llmessagetemplate.h b/indra/llmessage/llmessagetemplate.h
index 91d143b11e..e91d4346b6 100644
--- a/indra/llmessage/llmessagetemplate.h
+++ b/indra/llmessage/llmessagetemplate.h
@@ -361,14 +361,14 @@ public:
         mUserData = user_data;
     }
 
-    BOOL callHandlerFunc(LLMessageSystem *msgsystem) const
+    bool callHandlerFunc(LLMessageSystem *msgsystem) const
     {
         if (mHandlerFunc)
         {
             mHandlerFunc(msgsystem, mUserData);
-            return TRUE;
+            return true;
         }
-        return FALSE;
+        return false;
     }
 
     bool isUdpBanned() const
diff --git a/indra/llmessage/llmessagetemplateparser.cpp b/indra/llmessage/llmessagetemplateparser.cpp
index 4fb9257e90..cf1f49116e 100644
--- a/indra/llmessage/llmessagetemplateparser.cpp
+++ b/indra/llmessage/llmessagetemplateparser.cpp
@@ -42,7 +42,7 @@
 //  *   - repeat last check
 
 // checks 'a'
-BOOL    b_return_alphanumeric_ok(char c)
+bool    b_return_alphanumeric_ok(char c)
 {
     if (  (  (c < 'A')
            ||(c > 'Z'))
@@ -51,26 +51,26 @@ BOOL    b_return_alphanumeric_ok(char c)
         &&(  (c < '0')
            ||(c > '9')))
     {
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 // checks 'c'
-BOOL    b_return_character_ok(char c)
+bool    b_return_character_ok(char c)
 {
     if (  (  (c < 'A')
            ||(c > 'Z'))
         &&(  (c < 'a')
            ||(c > 'z')))
     {
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 // checks 'f'
-BOOL    b_return_first_variable_ok(char c)
+bool    b_return_first_variable_ok(char c)
 {
     if (  (  (c < 'A')
            ||(c > 'Z'))
@@ -78,13 +78,13 @@ BOOL    b_return_first_variable_ok(char c)
            ||(c > 'z'))
         &&(c != '_'))
     {
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 // checks 'v'
-BOOL    b_return_variable_ok(char c)
+bool    b_return_variable_ok(char c)
 {
     if (  (  (c < 'A')
            ||(c > 'Z'))
@@ -94,35 +94,35 @@ BOOL    b_return_variable_ok(char c)
            ||(c > '9'))
         &&(c != '_'))
     {
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 // checks 's'
-BOOL    b_return_signed_integer_ok(char c)
+bool    b_return_signed_integer_ok(char c)
 {
     if (  (  (c < '0')
            ||(c > '9'))
         &&(c != '-'))
     {
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 // checks 'd'
-BOOL    b_return_integer_ok(char c)
+bool    b_return_integer_ok(char c)
 {
     if (  (c < '0')
         ||(c > '9'))
     {
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
-BOOL    (*gParseCheckCharacters[])(char c) =
+bool    (*gParseCheckCharacters[])(char c) =
 {
     b_return_alphanumeric_ok,
     b_return_character_ok,
@@ -156,7 +156,7 @@ S32 get_checker_number(char checker)
 }
 
 // check token based on passed simplified regular expression
-BOOL    b_check_token(const char *token, const char *regexp)
+bool    b_check_token(const char *token, const char *regexp)
 {
     S32 tptr, rptr = 0;
     S32 current_checker, next_checker = 0;
@@ -166,13 +166,13 @@ BOOL    b_check_token(const char *token, const char *regexp)
     if (current_checker == -1)
     {
         LL_ERRS() << "Invalid regular expression value!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if (current_checker == 9999)
     {
         LL_ERRS() << "Regular expression can't start with *!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     for (tptr = 0; token[tptr]; tptr++)
@@ -180,12 +180,12 @@ BOOL    b_check_token(const char *token, const char *regexp)
         if (current_checker == -1)
         {
             LL_ERRS() << "Input exceeds regular expression!\nDid you forget a *?" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         if (!gParseCheckCharacters[current_checker](token[tptr]))
         {
-            return FALSE;
+            return false;
         }
         if (next_checker != 9999)
         {
@@ -196,40 +196,40 @@ BOOL    b_check_token(const char *token, const char *regexp)
             }
         }
     }
-    return TRUE;
+    return true;
 }
 
 // C variable can be made up of upper or lower case letters, underscores, or numbers, but can't start with a number
-BOOL    b_variable_ok(const char *token)
+bool    b_variable_ok(const char *token)
 {
     if (!b_check_token(token, "fv*"))
     {
         LL_WARNS() << "Token '" << token << "' isn't a variable!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 // An integer is made up of the digits 0-9 and may be preceded by a '-'
-BOOL    b_integer_ok(const char *token)
+bool    b_integer_ok(const char *token)
 {
     if (!b_check_token(token, "sd*"))
     {
         LL_WARNS() << "Token isn't an integer!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 // An integer is made up of the digits 0-9
-BOOL    b_positive_integer_ok(const char *token)
+bool    b_positive_integer_ok(const char *token)
 {
     if (!b_check_token(token, "d*"))
     {
         LL_WARNS() << "Token isn't an integer!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 
diff --git a/indra/llmessage/llmessagethrottle.cpp b/indra/llmessage/llmessagethrottle.cpp
index ef4f3702fc..abcb1085ba 100644
--- a/indra/llmessage/llmessagethrottle.cpp
+++ b/indra/llmessage/llmessagethrottle.cpp
@@ -66,13 +66,13 @@ void LLMessageThrottle::pruneEntries()
 
         // Look for the first entry younger than the maximum age.
         F32 max_age = (F32)MAX_MESSAGE_AGE[cat];
-        BOOL found = FALSE;
+        bool found = false;
         while (r_iterator != r_last && !found)
         {
             if ( LLFrameTimer::getTotalTime() - (*r_iterator).getEntryTime() < max_age )
             {
                 // We found a young enough entry.
-                found = TRUE;
+                found = true;
 
                 // Did we find at least one entry to remove?
                 if (r_iterator != message_list->rbegin())
@@ -95,7 +95,7 @@ void LLMessageThrottle::pruneEntries()
     }
 }
 
-BOOL LLMessageThrottle::addViewerAlert(const LLUUID& to, const std::string& mesg)
+bool LLMessageThrottle::addViewerAlert(const LLUUID& to, const std::string& mesg)
 {
     message_list_t* message_list = &(mMessageList[MTC_VIEWER_ALERT]);
 
@@ -114,16 +114,16 @@ BOOL LLMessageThrottle::addViewerAlert(const LLUUID& to, const std::string& mesg
     {
         // This message was not found.  Add it to the list.
         message_list->push_front(entry);
-        return TRUE;
+        return true;
     }
     else
     {
         // This message was already in the list.
-        return FALSE;
+        return false;
     }
 }
 
-BOOL LLMessageThrottle::addAgentAlert(const LLUUID& agent, const LLUUID& task, const std::string& mesg)
+bool LLMessageThrottle::addAgentAlert(const LLUUID& agent, const LLUUID& task, const std::string& mesg)
 {
     message_list_t* message_list = &(mMessageList[MTC_AGENT_ALERT]);
 
@@ -142,12 +142,12 @@ BOOL LLMessageThrottle::addAgentAlert(const LLUUID& agent, const LLUUID& task, c
     {
         // This message was not found.  Add it to the list.
         message_list->push_front(entry);
-        return TRUE;
+        return true;
     }
     else
     {
         // This message was already in the list.
-        return FALSE;
+        return false;
     }
 }
 
diff --git a/indra/llmessage/llmessagethrottle.h b/indra/llmessage/llmessagethrottle.h
index 8a96a6b589..295bddbd8c 100644
--- a/indra/llmessage/llmessagethrottle.h
+++ b/indra/llmessage/llmessagethrottle.h
@@ -59,8 +59,8 @@ public:
     LLMessageThrottle();
     ~LLMessageThrottle();
 
-    BOOL addViewerAlert (const LLUUID& to, const std::string& mesg);
-    BOOL addAgentAlert  (const LLUUID& agent, const LLUUID& task, const std::string& mesg);
+    bool addViewerAlert (const LLUUID& to, const std::string& mesg);
+    bool addAgentAlert  (const LLUUID& agent, const LLUUID& task, const std::string& mesg);
 
     void pruneEntries();
 
diff --git a/indra/llmessage/llnamevalue.cpp b/indra/llmessage/llnamevalue.cpp
index 0e31a6d6e6..05ea3f26a1 100644
--- a/indra/llmessage/llnamevalue.cpp
+++ b/indra/llmessage/llnamevalue.cpp
@@ -676,13 +676,13 @@ LLVector3   *LLNameValue::getVec3()
 }
 
 
-BOOL LLNameValue::sendToData() const
+bool LLNameValue::sendToData() const
 {
     return (mSendto == NVS_DATA_SIM || mSendto == NVS_DATA_SIM_VIEWER);
 }
 
 
-BOOL LLNameValue::sendToViewer() const
+bool LLNameValue::sendToViewer() const
 {
     return (mSendto == NVS_SIM_VIEWER || mSendto == NVS_DATA_SIM_VIEWER);
 }
diff --git a/indra/llmessage/llnamevalue.h b/indra/llmessage/llnamevalue.h
index 4016c268d2..3c442df009 100644
--- a/indra/llmessage/llnamevalue.h
+++ b/indra/llmessage/llnamevalue.h
@@ -139,8 +139,8 @@ public:
     const char      *getClass() const       { return mStringClass; }
     const char      *getSendto() const      { return mStringSendto; }
 
-    BOOL            sendToData() const;
-    BOOL            sendToViewer() const;
+    bool            sendToData() const;
+    bool            sendToViewer() const;
 
     void            callCallback();
     std::string     printNameValue() const;
diff --git a/indra/llmessage/llpacketack.cpp b/indra/llmessage/llpacketack.cpp
index 98302111ca..e66e8b0285 100644
--- a/indra/llmessage/llpacketack.cpp
+++ b/indra/llmessage/llpacketack.cpp
@@ -58,7 +58,7 @@ LLReliablePacket::LLReliablePacket(
     else
     {
         mRetries = 0;
-        mPingBasedRetry = TRUE;
+        mPingBasedRetry = true;
         mTimeout = F32Seconds(0.f);
         mCallback = NULL;
         mCallbackData = NULL;
diff --git a/indra/llmessage/llpacketack.h b/indra/llmessage/llpacketack.h
index b60861eac7..0903c01e14 100644
--- a/indra/llmessage/llpacketack.h
+++ b/indra/llmessage/llpacketack.h
@@ -35,7 +35,7 @@ class LLReliablePacketParams
 public:
     LLHost mHost;
     S32 mRetries;
-    BOOL mPingBasedRetry;
+    bool mPingBasedRetry;
     F32Seconds mTimeout;
     void (*mCallback)(void **,S32);
     void** mCallbackData;
@@ -53,7 +53,7 @@ public:
     {
         mHost.invalidate();
         mRetries = 0;
-        mPingBasedRetry = TRUE;
+        mPingBasedRetry = true;
         mTimeout = F32Seconds(0.f);
         mCallback = NULL;
         mCallbackData = NULL;
@@ -63,7 +63,7 @@ public:
     void set(
         const LLHost& host,
         S32 retries,
-        BOOL ping_based_retry,
+        bool ping_based_retry,
         F32Seconds timeout,
         void (*callback)(void**,S32),
         void** callback_data, char* name)
@@ -98,7 +98,7 @@ protected:
     S32 mSocket;
     LLHost mHost;
     S32 mRetries;
-    BOOL mPingBasedRetry;
+    bool mPingBasedRetry;
     F32Seconds mTimeout;
     void (*mCallback)(void**,S32);
     void** mCallbackData;
diff --git a/indra/llmessage/llpacketring.cpp b/indra/llmessage/llpacketring.cpp
index 122f7a8b5b..be838770a8 100644
--- a/indra/llmessage/llpacketring.cpp
+++ b/indra/llmessage/llpacketring.cpp
@@ -45,8 +45,8 @@
 
 ///////////////////////////////////////////////////////////
 LLPacketRing::LLPacketRing () :
-    mUseInThrottle(FALSE),
-    mUseOutThrottle(FALSE),
+    mUseInThrottle(false),
+    mUseOutThrottle(false),
     mInThrottle(256000.f),
     mOutThrottle(64000.f),
     mActualBitsIn(0),
@@ -97,12 +97,12 @@ void LLPacketRing::setDropPercentage (F32 percent_to_drop)
     mDropPercentage = percent_to_drop;
 }
 
-void LLPacketRing::setUseInThrottle(const BOOL use_throttle)
+void LLPacketRing::setUseInThrottle(const bool use_throttle)
 {
     mUseInThrottle = use_throttle;
 }
 
-void LLPacketRing::setUseOutThrottle(const BOOL use_throttle)
+void LLPacketRing::setUseOutThrottle(const bool use_throttle)
 {
     mUseOutThrottle = use_throttle;
 }
@@ -161,7 +161,7 @@ S32 LLPacketRing::receivePacket (S32 socket, char *datap)
     // If using the throttle, simulate a limited size input buffer.
     if (mUseInThrottle)
     {
-        BOOL done = FALSE;
+        bool done = false;
 
         // push any current net packet (if any) onto delay ring
         while (!done)
@@ -270,9 +270,9 @@ S32 LLPacketRing::receivePacket (S32 socket, char *datap)
     return packet_size;
 }
 
-BOOL LLPacketRing::sendPacket(int h_socket, char * send_buffer, S32 buf_size, LLHost host)
+bool LLPacketRing::sendPacket(int h_socket, char * send_buffer, S32 buf_size, LLHost host)
 {
-    BOOL status = TRUE;
+    bool status = true;
     if (!mUseOutThrottle)
     {
         return sendPacketImpl(h_socket, send_buffer, buf_size, host );
@@ -344,7 +344,7 @@ BOOL LLPacketRing::sendPacket(int h_socket, char * send_buffer, S32 buf_size, LL
     return status;
 }
 
-BOOL LLPacketRing::sendPacketImpl(int h_socket, const char * send_buffer, S32 buf_size, LLHost host)
+bool LLPacketRing::sendPacketImpl(int h_socket, const char * send_buffer, S32 buf_size, LLHost host)
 {
 
     if (!LLProxy::isSOCKSProxyEnabled())
diff --git a/indra/llmessage/llpacketring.h b/indra/llmessage/llpacketring.h
index 4f90112412..f0e95f8524 100644
--- a/indra/llmessage/llpacketring.h
+++ b/indra/llmessage/llpacketring.h
@@ -46,14 +46,14 @@ public:
 
     void dropPackets(U32);
     void setDropPercentage (F32 percent_to_drop);
-    void setUseInThrottle(const BOOL use_throttle);
-    void setUseOutThrottle(const BOOL use_throttle);
+    void setUseInThrottle(const bool use_throttle);
+    void setUseOutThrottle(const bool use_throttle);
     void setInBandwidth(const F32 bps);
     void setOutBandwidth(const F32 bps);
     S32  receivePacket (S32 socket, char *datap);
     S32  receiveFromRing (S32 socket, char *datap);
 
-    BOOL sendPacket(int h_socket, char * send_buffer, S32 buf_size, LLHost host);
+    bool sendPacket(int h_socket, char * send_buffer, S32 buf_size, LLHost host);
 
     inline LLHost getLastSender();
     inline LLHost getLastReceivingInterface();
@@ -61,8 +61,8 @@ public:
     S32 getAndResetActualInBits()               { S32 bits = mActualBitsIn; mActualBitsIn = 0; return bits;}
     S32 getAndResetActualOutBits()              { S32 bits = mActualBitsOut; mActualBitsOut = 0; return bits;}
 protected:
-    BOOL mUseInThrottle;
-    BOOL mUseOutThrottle;
+    bool mUseInThrottle;
+    bool mUseOutThrottle;
 
     // For simulating a lower-bandwidth connection - BPS
     LLThrottle mInThrottle;
@@ -84,7 +84,7 @@ protected:
     LLHost mLastReceivingIF;
 
 private:
-    BOOL sendPacketImpl(int h_socket, const char * send_buffer, S32 buf_size, LLHost host);
+    bool sendPacketImpl(int h_socket, const char * send_buffer, S32 buf_size, LLHost host);
 };
 
 
diff --git a/indra/llmessage/llpartdata.cpp b/indra/llmessage/llpartdata.cpp
index 320b61b905..d4cf95c1e3 100644
--- a/indra/llmessage/llpartdata.cpp
+++ b/indra/llmessage/llpartdata.cpp
@@ -71,31 +71,31 @@ S32 LLPartData::getSize() const
 }
 
 
-BOOL LLPartData::unpackLegacy(LLDataPacker &dp)
+bool LLPartData::unpackLegacy(LLDataPacker &dp)
 {
     LLColor4U coloru;
 
     dp.unpackU32(mFlags, "pdflags");
-    dp.unpackFixed(mMaxAge, "pdmaxage", FALSE, 8, 8);
+    dp.unpackFixed(mMaxAge, "pdmaxage", false, 8, 8);
 
     dp.unpackColor4U(coloru, "pdstartcolor");
     mStartColor.setVec(coloru);
     dp.unpackColor4U(coloru, "pdendcolor");
     mEndColor.setVec(coloru);
-    dp.unpackFixed(mStartScale.mV[0], "pdstartscalex", FALSE, 3, 5);
-    dp.unpackFixed(mStartScale.mV[1], "pdstartscaley", FALSE, 3, 5);
-    dp.unpackFixed(mEndScale.mV[0], "pdendscalex", FALSE, 3, 5);
-    dp.unpackFixed(mEndScale.mV[1], "pdendscaley", FALSE, 3, 5);
+    dp.unpackFixed(mStartScale.mV[0], "pdstartscalex", false, 3, 5);
+    dp.unpackFixed(mStartScale.mV[1], "pdstartscaley", false, 3, 5);
+    dp.unpackFixed(mEndScale.mV[0], "pdendscalex", false, 3, 5);
+    dp.unpackFixed(mEndScale.mV[1], "pdendscaley", false, 3, 5);
 
     mStartGlow = 0.f;
     mEndGlow = 0.f;
     mBlendFuncSource = LLPartData::LL_PART_BF_SOURCE_ALPHA;
     mBlendFuncDest = LLPartData::LL_PART_BF_ONE_MINUS_SOURCE_ALPHA;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLPartData::unpack(LLDataPacker &dp)
+bool LLPartData::unpack(LLDataPacker &dp)
 {
     S32 size = 0;
     dp.unpackS32(size, "partsize");
@@ -105,7 +105,7 @@ BOOL LLPartData::unpack(LLDataPacker &dp)
 
     if (mFlags & LL_PART_DATA_GLOW)
     {
-        if (size < PS_PART_DATA_GLOW_SIZE) return FALSE;
+        if (size < PS_PART_DATA_GLOW_SIZE) return false;
 
         U8 tmp_glow = 0;
         dp.unpackU8(tmp_glow,"pdstartglow");
@@ -123,7 +123,7 @@ BOOL LLPartData::unpack(LLDataPacker &dp)
 
     if (mFlags & LL_PART_DATA_BLEND)
     {
-        if (size < PS_PART_DATA_BLEND_SIZE) return FALSE;
+        if (size < PS_PART_DATA_BLEND_SIZE) return false;
         dp.unpackU8(mBlendFuncSource,"pdblendsource");
         dp.unpackU8(mBlendFuncDest,"pdblenddest");
         size -= PS_PART_DATA_BLEND_SIZE;
@@ -144,11 +144,11 @@ BOOL LLPartData::unpack(LLDataPacker &dp)
         }
 
         //this particle system won't display properly, better to not show anything
-        return FALSE;
+        return false;
     }
 
 
-    return TRUE;
+    return true;
 }
 
 void LLPartData::setFlags(const U32 flags)
@@ -240,44 +240,44 @@ LLPartSysData::LLPartSysData()
     mNumParticles = 0;
 }
 
-BOOL LLPartSysData::unpackSystem(LLDataPacker &dp)
+bool LLPartSysData::unpackSystem(LLDataPacker &dp)
 {
     dp.unpackU32(mCRC, "pscrc");
     dp.unpackU32(mFlags, "psflags");
     dp.unpackU8(mPattern, "pspattern");
-    dp.unpackFixed(mMaxAge, "psmaxage", FALSE, 8, 8);
-    dp.unpackFixed(mStartAge, "psstartage", FALSE, 8, 8);
-    dp.unpackFixed(mInnerAngle, "psinnerangle", FALSE, 3, 5);
-    dp.unpackFixed(mOuterAngle, "psouterangle", FALSE, 3, 5);
-    dp.unpackFixed(mBurstRate, "psburstrate", FALSE, 8, 8);
+    dp.unpackFixed(mMaxAge, "psmaxage", false, 8, 8);
+    dp.unpackFixed(mStartAge, "psstartage", false, 8, 8);
+    dp.unpackFixed(mInnerAngle, "psinnerangle", false, 3, 5);
+    dp.unpackFixed(mOuterAngle, "psouterangle", false, 3, 5);
+    dp.unpackFixed(mBurstRate, "psburstrate", false, 8, 8);
     mBurstRate = llmax(0.01f, mBurstRate);
-    dp.unpackFixed(mBurstRadius, "psburstradius", FALSE, 8, 8);
-    dp.unpackFixed(mBurstSpeedMin, "psburstspeedmin", FALSE, 8, 8);
-    dp.unpackFixed(mBurstSpeedMax, "psburstspeedmax", FALSE, 8, 8);
+    dp.unpackFixed(mBurstRadius, "psburstradius", false, 8, 8);
+    dp.unpackFixed(mBurstSpeedMin, "psburstspeedmin", false, 8, 8);
+    dp.unpackFixed(mBurstSpeedMax, "psburstspeedmax", false, 8, 8);
     dp.unpackU8(mBurstPartCount, "psburstpartcount");
 
-    dp.unpackFixed(mAngularVelocity.mV[0], "psangvelx", TRUE, 8, 7);
-    dp.unpackFixed(mAngularVelocity.mV[1], "psangvely", TRUE, 8, 7);
-    dp.unpackFixed(mAngularVelocity.mV[2], "psangvelz", TRUE, 8, 7);
+    dp.unpackFixed(mAngularVelocity.mV[0], "psangvelx", true, 8, 7);
+    dp.unpackFixed(mAngularVelocity.mV[1], "psangvely", true, 8, 7);
+    dp.unpackFixed(mAngularVelocity.mV[2], "psangvelz", true, 8, 7);
 
-    dp.unpackFixed(mPartAccel.mV[0], "psaccelx", TRUE, 8, 7);
-    dp.unpackFixed(mPartAccel.mV[1], "psaccely", TRUE, 8, 7);
-    dp.unpackFixed(mPartAccel.mV[2], "psaccelz", TRUE, 8, 7);
+    dp.unpackFixed(mPartAccel.mV[0], "psaccelx", true, 8, 7);
+    dp.unpackFixed(mPartAccel.mV[1], "psaccely", true, 8, 7);
+    dp.unpackFixed(mPartAccel.mV[2], "psaccelz", true, 8, 7);
 
     dp.unpackUUID(mPartImageID, "psuuid");
     dp.unpackUUID(mTargetUUID, "pstargetuuid");
-    return TRUE;
+    return true;
 }
 
-BOOL LLPartSysData::unpackLegacy(LLDataPacker &dp)
+bool LLPartSysData::unpackLegacy(LLDataPacker &dp)
 {
     unpackSystem(dp);
     mPartData.unpackLegacy(dp);
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLPartSysData::unpack(LLDataPacker &dp)
+bool LLPartSysData::unpack(LLDataPacker &dp)
 {
     // syssize is currently unused.  Adding now when modifying the 'version to make extensible in the future
     S32 size = 0;
@@ -289,18 +289,18 @@ BOOL LLPartSysData::unpack(LLDataPacker &dp)
         //skip to LLPartData block
         U8 feh = 0;
 
-        for (U32 i = 0; i < size; ++i)
+        for (S32 i = 0; i < size; ++i)
         {
             dp.unpackU8(feh, "whippang");
         }
 
         dp.unpackS32(size, "partsize");
         //skip LLPartData block
-        for (U32 i = 0; i < size; ++i)
+        for (S32 i = 0; i < size; ++i)
         {
             dp.unpackU8(feh, "whippang");
         }
-        return FALSE;
+        return false;
     }
 
     unpackSystem(dp);
@@ -324,7 +324,7 @@ std::ostream& operator<<(std::ostream& s, const LLPartSysData &data)
     return s;
 }
 
-BOOL LLPartSysData::isNullPS(const S32 block_num)
+bool LLPartSysData::isNullPS(const S32 block_num)
 {
     U8 ps_data_block[PS_MAX_DATA_BLOCK_SIZE];
     U32 crc;
@@ -335,13 +335,13 @@ BOOL LLPartSysData::isNullPS(const S32 block_num)
 
     if (!size)
     {
-        return TRUE;
+        return true;
     }
 
     if (size > PS_MAX_DATA_BLOCK_SIZE)
     {
         //size is too big, newer particle version unsupported
-        return TRUE;
+        return true;
     }
 
     gMessageSystem->getBinaryData("ObjectData", "PSBlock", ps_data_block, size, block_num, PS_MAX_DATA_BLOCK_SIZE);
@@ -355,7 +355,7 @@ BOOL LLPartSysData::isNullPS(const S32 block_num)
 
         if (tmp > PS_SYS_DATA_BLOCK_SIZE)
         { //unknown system data block size, don't know how to parse it, treat as NULL
-            return TRUE;
+            return true;
         }
     }
 
@@ -363,12 +363,12 @@ BOOL LLPartSysData::isNullPS(const S32 block_num)
 
     if (crc == 0)
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLPartSysData::unpackBlock(const S32 block_num)
+bool LLPartSysData::unpackBlock(const S32 block_num)
 {
     U8 ps_data_block[PS_MAX_DATA_BLOCK_SIZE];
 
@@ -378,7 +378,7 @@ BOOL LLPartSysData::unpackBlock(const S32 block_num)
     if (size > PS_MAX_DATA_BLOCK_SIZE)
     {
         // Larger packets are newer and unsupported
-        return FALSE;
+        return false;
     }
 
     // Get from message
diff --git a/indra/llmessage/llpartdata.h b/indra/llmessage/llpartdata.h
index 35602dc949..49b9e51a3d 100644
--- a/indra/llmessage/llpartdata.h
+++ b/indra/llmessage/llpartdata.h
@@ -88,10 +88,10 @@ public:
         mParameter(0.f)
     {
     }
-    BOOL unpackLegacy(LLDataPacker &dp);
-    BOOL unpack(LLDataPacker &dp);
+    bool unpackLegacy(LLDataPacker &dp);
+    bool unpack(LLDataPacker &dp);
 
-    BOOL pack(LLDataPacker &dp);
+    bool pack(LLDataPacker &dp);
 
     bool hasGlow() const;
     bool hasBlendFunc() const;
@@ -183,11 +183,11 @@ class LLPartSysData
 public:
     LLPartSysData();
 
-    BOOL unpack(LLDataPacker &dp);
-    BOOL unpackLegacy(LLDataPacker &dp);
-    BOOL unpackBlock(const S32 block_num);
+    bool unpack(LLDataPacker &dp);
+    bool unpackLegacy(LLDataPacker &dp);
+    bool unpackBlock(const S32 block_num);
 
-    static BOOL isNullPS(const S32 block_num); // Returns FALSE if this is a "NULL" particle system (i.e. no system)
+    static bool isNullPS(const S32 block_num); // Returns false if this is a "NULL" particle system (i.e. no system)
 
     bool isLegacyCompatible() const;
 
@@ -227,7 +227,7 @@ public:
     S32 getdataBlockSize() const;
 
 private:
-    BOOL unpackSystem(LLDataPacker &dp);
+    bool unpackSystem(LLDataPacker &dp);
 
 public:
     // Public because I'm lazy....
diff --git a/indra/llmessage/llproxy.cpp b/indra/llmessage/llproxy.cpp
index 8a395c26a8..d713cb20d9 100644
--- a/indra/llmessage/llproxy.cpp
+++ b/indra/llmessage/llproxy.cpp
@@ -123,7 +123,7 @@ S32 LLProxy::proxyHandshake(LLHost proxy)
         // The server has requested a username/password combination
         std::string socks_username(getSocksUser());
         std::string socks_password(getSocksPwd());
-        U32 request_size = socks_username.size() + socks_password.size() + 3;
+        U32 request_size = static_cast<S32>(socks_username.size() + socks_password.size() + 3);
         char * password_auth = new char[request_size];
         password_auth[0] = 0x01;
         password_auth[1] = (char)(socks_username.size());
diff --git a/indra/llmessage/llpumpio.cpp b/indra/llmessage/llpumpio.cpp
index ec0d7fe4e4..e1cd70b216 100644
--- a/indra/llmessage/llpumpio.cpp
+++ b/indra/llmessage/llpumpio.cpp
@@ -181,12 +181,13 @@ bool LLPumpIO::prime(apr_pool_t* pool)
 {
     cleanup();
     initialize(pool);
-    return ((pool == NULL) ? false : true);
+    return pool != nullptr;
 }
 
 bool LLPumpIO::addChain(const chain_t& chain, F32 timeout, bool has_curl_request)
 {
-    if(chain.empty()) return false;
+    if (chain.empty())
+        return false;
 
     LLChainInfo info;
     info.mHasCurlRequest = has_curl_request;
@@ -218,12 +219,13 @@ bool LLPumpIO::addChain(
     LLSD context,
     F32 timeout)
 {
-
     // remember that if the caller is providing a full link
     // description, we need to have that description matched to a
     // particular buffer.
-    if(!data) return false;
-    if(links.empty()) return false;
+    if (!data)
+        return false;
+    if (links.empty())
+        return false;
 
 #if LL_DEBUG_PIPE_TYPE_IN_PUMP
     LL_DEBUGS() << "LLPumpIO::addChain() " << links[0].mPipe << " '"
@@ -243,10 +245,11 @@ bool LLPumpIO::addChain(
 bool LLPumpIO::setTimeoutSeconds(F32 timeout)
 {
     // If no chain is running, return failure.
-    if(mRunningChains.end() == mCurrentChain)
+    if (mRunningChains.end() == mCurrentChain)
     {
         return false;
     }
+
     (*mCurrentChain).setTimeoutSeconds(timeout);
     return true;
 }
@@ -254,7 +257,7 @@ bool LLPumpIO::setTimeoutSeconds(F32 timeout)
 void LLPumpIO::adjustTimeoutSeconds(F32 delta)
 {
     // Ensure a chain is running
-    if(mRunningChains.end() != mCurrentChain)
+    if (mRunningChains.end() != mCurrentChain)
     {
         (*mCurrentChain).adjustTimeoutSeconds(delta);
     }
@@ -263,27 +266,27 @@ void LLPumpIO::adjustTimeoutSeconds(F32 delta)
 static std::string events_2_string(apr_int16_t events)
 {
     std::ostringstream ostr;
-    if(events & APR_POLLIN)
+    if (events & APR_POLLIN)
     {
         ostr << "read,";
     }
-    if(events & APR_POLLPRI)
+    if (events & APR_POLLPRI)
     {
         ostr << "priority,";
     }
-    if(events & APR_POLLOUT)
+    if (events & APR_POLLOUT)
     {
         ostr << "write,";
     }
-    if(events & APR_POLLERR)
+    if (events & APR_POLLERR)
     {
         ostr << "error,";
     }
-    if(events & APR_POLLHUP)
+    if (events & APR_POLLHUP)
     {
         ostr << "hangup,";
     }
-    if(events & APR_POLLNVAL)
+    if (events & APR_POLLNVAL)
     {
         ostr << "invalid,";
     }
@@ -292,7 +295,8 @@ static std::string events_2_string(apr_int16_t events)
 
 bool LLPumpIO::setConditional(LLIOPipe* pipe, const apr_pollfd_t* poll)
 {
-    if(!pipe) return false;
+    if (!pipe)
+        return false;
     ll_debug_poll_fd("Set conditional", poll);
 
     LL_DEBUGS() << "Setting conditionals (" << (poll ? events_2_string(poll->reqevents) :"null")
@@ -814,7 +818,7 @@ void LLPumpIO::rebuildPollset()
     running_chains_t::iterator run_end = mRunningChains.end();
     for(; run_it != run_end; ++run_it)
     {
-        size += (*run_it).mDescriptors.size();
+        size += static_cast<U32>((*run_it).mDescriptors.size());
     }
     //LL_DEBUGS() << "found " << size << " descriptors." << LL_ENDL;
     if(size)
diff --git a/indra/llmessage/llregionflags.h b/indra/llmessage/llregionflags.h
index 71a7672337..2b7ba80a78 100644
--- a/indra/llmessage/llregionflags.h
+++ b/indra/llmessage/llregionflags.h
@@ -28,89 +28,94 @@
 #define LL_LLREGIONFLAGS_H
 
 // Can you be hurt here? Should health be on?
-const U64 REGION_FLAGS_ALLOW_DAMAGE             = (1 << 0);
+constexpr U64 REGION_FLAGS_ALLOW_DAMAGE             = (1ULL << 0);
 
 // Can you make landmarks here?
-const U64 REGION_FLAGS_ALLOW_LANDMARK           = (1 << 1);
+constexpr U64 REGION_FLAGS_ALLOW_LANDMARK           = (1ULL << 1);
 
 // Do we reset the home position when someone teleports away from here?
-const U64 REGION_FLAGS_ALLOW_SET_HOME           = (1 << 2);
+constexpr U64 REGION_FLAGS_ALLOW_SET_HOME           = (1ULL << 2);
 
 // Do we reset the home position when someone teleports away from here?
-const U64 REGION_FLAGS_RESET_HOME_ON_TELEPORT   = (1 << 3);
+constexpr U64 REGION_FLAGS_RESET_HOME_ON_TELEPORT   = (1ULL << 3);
 
 // Does the sun move?
-const U64 REGION_FLAGS_SUN_FIXED                = (1 << 4);
+constexpr U64 REGION_FLAGS_SUN_FIXED                = (1ULL << 4);
 
 // Does the estate owner allow private parcels?
-const U64 REGION_FLAGS_ALLOW_ACCESS_OVERRIDE    = (1 << 5);
+constexpr U64 REGION_FLAGS_ALLOW_ACCESS_OVERRIDE    = (1ULL << 5);
 
 // Can't change the terrain heightfield, even on owned parcels,
 // but can plant trees and grass.
-const U64 REGION_FLAGS_BLOCK_TERRAFORM          = (1 << 6);
+constexpr U64 REGION_FLAGS_BLOCK_TERRAFORM          = (1ULL << 6);
 
 // Can't release, sell, or buy land.
-const U64 REGION_FLAGS_BLOCK_LAND_RESELL        = (1 << 7);
+constexpr U64 REGION_FLAGS_BLOCK_LAND_RESELL        = (1ULL << 7);
 
 // All content wiped once per night
-const U64 REGION_FLAGS_SANDBOX                  = (1 << 8);
+constexpr U64 REGION_FLAGS_SANDBOX                  = (1ULL << 8);
 
-const U64 REGION_FLAGS_ALLOW_ENVIRONMENT_OVERRIDE = (1 << 9);
+constexpr U64 REGION_FLAGS_ALLOW_ENVIRONMENT_OVERRIDE = (1ULL << 9);
 
-const U64 REGION_FLAGS_SKIP_COLLISIONS          = (1 << 12); // Pin all non agent rigid bodies
-const U64 REGION_FLAGS_SKIP_SCRIPTS             = (1 << 13);
-const U64 REGION_FLAGS_SKIP_PHYSICS             = (1 << 14); // Skip all physics
-const U64 REGION_FLAGS_EXTERNALLY_VISIBLE       = (1 << 15);
-const U64 REGION_FLAGS_ALLOW_RETURN_ENCROACHING_OBJECT = (1 << 16);
-const U64 REGION_FLAGS_ALLOW_RETURN_ENCROACHING_ESTATE_OBJECT = (1 << 17);
-const U64 REGION_FLAGS_BLOCK_DWELL              = (1 << 18);
+constexpr U64 REGION_FLAGS_SKIP_COLLISIONS          = (1ULL << 12); // Pin all non agent rigid bodies
+constexpr U64 REGION_FLAGS_SKIP_SCRIPTS             = (1ULL << 13);
+constexpr U64 REGION_FLAGS_SKIP_PHYSICS             = (1ULL << 14); // Skip all physics
+constexpr U64 REGION_FLAGS_EXTERNALLY_VISIBLE       = (1ULL << 15);
+constexpr U64 REGION_FLAGS_ALLOW_RETURN_ENCROACHING_OBJECT = (1ULL << 16);
+constexpr U64 REGION_FLAGS_ALLOW_RETURN_ENCROACHING_ESTATE_OBJECT = (1ULL << 17);
+constexpr U64 REGION_FLAGS_BLOCK_DWELL              = (1ULL << 18);
 
 // Is flight allowed?
-const U64 REGION_FLAGS_BLOCK_FLY                = (1 << 19);
+constexpr U64 REGION_FLAGS_BLOCK_FLY                = (1ULL << 19);
 
 // Is direct teleport (p2p) allowed?
-const U64 REGION_FLAGS_ALLOW_DIRECT_TELEPORT    = (1 << 20);
+constexpr U64 REGION_FLAGS_ALLOW_DIRECT_TELEPORT    = (1ULL << 20);
 
 // Is there an administrative override on scripts in the region at the
 // moment. This is the similar skip scripts, except this flag is
 // presisted in the database on an estate level.
-const U64 REGION_FLAGS_ESTATE_SKIP_SCRIPTS      = (1 << 21);
+constexpr U64 REGION_FLAGS_ESTATE_SKIP_SCRIPTS      = (1ULL << 21);
 
-const U64 REGION_FLAGS_RESTRICT_PUSHOBJECT      = (1 << 22);
+constexpr U64 REGION_FLAGS_RESTRICT_PUSHOBJECT      = (1ULL << 22);
 
-const U64 REGION_FLAGS_DENY_ANONYMOUS           = (1 << 23);
+constexpr U64 REGION_FLAGS_DENY_ANONYMOUS           = (1ULL << 23);
 
-const U64 REGION_FLAGS_ALLOW_PARCEL_CHANGES     = (1 << 26);
+constexpr U64 REGION_FLAGS_ALLOW_PARCEL_CHANGES     = (1ULL << 26);
 
-const U64 REGION_FLAGS_BLOCK_FLYOVER = (1 << 27);
+constexpr U64 REGION_FLAGS_BLOCK_FLYOVER = (1ULL << 27);
 
-const U64 REGION_FLAGS_ALLOW_VOICE = (1 << 28);
+constexpr U64 REGION_FLAGS_ALLOW_VOICE = (1ULL << 28);
 
-const U64 REGION_FLAGS_BLOCK_PARCEL_SEARCH = (1 << 29);
-const U64 REGION_FLAGS_DENY_AGEUNVERIFIED   = (1 << 30);
+constexpr U64 REGION_FLAGS_BLOCK_PARCEL_SEARCH = (1ULL << 29);
+constexpr U64 REGION_FLAGS_DENY_AGEUNVERIFIED   = (1ULL << 30);
 
-const U64 REGION_FLAGS_DENY_BOTS = (1 << 31);
+constexpr U64 REGION_FLAGS_DENY_BOTS = (1ULL << 31);
 
-const U64 REGION_FLAGS_DEFAULT = REGION_FLAGS_ALLOW_LANDMARK |
-                                 REGION_FLAGS_ALLOW_SET_HOME |
-                                 REGION_FLAGS_ALLOW_PARCEL_CHANGES |
-                                 REGION_FLAGS_ALLOW_VOICE;
+constexpr U64 REGION_FLAGS_DEFAULT = REGION_FLAGS_ALLOW_LANDMARK |
+                                     REGION_FLAGS_ALLOW_SET_HOME |
+                                     REGION_FLAGS_ALLOW_PARCEL_CHANGES |
+                                     REGION_FLAGS_ALLOW_VOICE;
 
 
-const U64 REGION_FLAGS_PRELUDE_SET = REGION_FLAGS_RESET_HOME_ON_TELEPORT;
-const U64 REGION_FLAGS_PRELUDE_UNSET = REGION_FLAGS_ALLOW_LANDMARK
-                                       | REGION_FLAGS_ALLOW_SET_HOME;
+constexpr U64 REGION_FLAGS_PRELUDE_SET = REGION_FLAGS_RESET_HOME_ON_TELEPORT;
+constexpr U64 REGION_FLAGS_PRELUDE_UNSET = REGION_FLAGS_ALLOW_LANDMARK |
+                                           REGION_FLAGS_ALLOW_SET_HOME;
 
-const U64 REGION_FLAGS_ESTATE_MASK = REGION_FLAGS_EXTERNALLY_VISIBLE
-                                     | REGION_FLAGS_SUN_FIXED
-                                     | REGION_FLAGS_DENY_ANONYMOUS
-                                     | REGION_FLAGS_DENY_AGEUNVERIFIED;
+constexpr U64 REGION_FLAGS_ESTATE_MASK = REGION_FLAGS_EXTERNALLY_VISIBLE |
+                                         REGION_FLAGS_SUN_FIXED |
+                                         REGION_FLAGS_DENY_ANONYMOUS |
+                                         REGION_FLAGS_DENY_AGEUNVERIFIED;
 
-inline BOOL is_prelude( U64 flags )
+inline bool is_flag_set(U64 flags, U64 flag)
+{
+    return (flags & flag) != 0;
+}
+
+inline bool is_prelude( U64 flags )
 {
     // definition of prelude does not depend on fixed-sun
-    return 0 == (flags & REGION_FLAGS_PRELUDE_UNSET)
-           && 0 != (flags & REGION_FLAGS_PRELUDE_SET);
+    return !is_flag_set(flags, REGION_FLAGS_PRELUDE_UNSET) &&
+            is_flag_set(flags, REGION_FLAGS_PRELUDE_SET);
 }
 
 inline U64 set_prelude_flags(U64 flags)
@@ -128,79 +133,75 @@ inline U64 unset_prelude_flags(U64 flags)
 }
 
 // Region protocols
-const U64 REGION_PROTOCOLS_AGENT_APPEARANCE_SERVICE = (1 << 0);
+constexpr U64 REGION_PROTOCOLS_AGENT_APPEARANCE_SERVICE = (1ULL << 0);
 
 // estate constants. Need to match first few etries in indra.estate table.
-const U32 ESTATE_ALL = 0; // will not match in db, reserved key for logic
-const U32 ESTATE_MAINLAND = 1;
-const U32 ESTATE_ORIENTATION = 2;
-const U32 ESTATE_INTERNAL = 3;
-const U32 ESTATE_SHOWCASE = 4;
-const U32 ESTATE_TEEN = 5;
-const U32 ESTATE_LAST_LINDEN = 5; // last linden owned/managed estate
+constexpr U32 ESTATE_ALL = 0; // will not match in db, reserved key for logic
+constexpr U32 ESTATE_MAINLAND = 1;
+constexpr U32 ESTATE_ORIENTATION = 2;
+constexpr U32 ESTATE_INTERNAL = 3;
+constexpr U32 ESTATE_SHOWCASE = 4;
+constexpr U32 ESTATE_TEEN = 5;
+constexpr U32 ESTATE_LAST_LINDEN = 5; // last linden owned/managed estate
 
 // for EstateOwnerRequest, setaccess message
-const U32 ESTATE_ACCESS_ALLOWED_AGENTS  = 1 << 0;
-const U32 ESTATE_ACCESS_ALLOWED_GROUPS  = 1 << 1;
-const U32 ESTATE_ACCESS_BANNED_AGENTS   = 1 << 2;
-const U32 ESTATE_ACCESS_MANAGERS        = 1 << 3;
+constexpr U32 ESTATE_ACCESS_ALLOWED_AGENTS  = 1 << 0;
+constexpr U32 ESTATE_ACCESS_ALLOWED_GROUPS  = 1 << 1;
+constexpr U32 ESTATE_ACCESS_BANNED_AGENTS   = 1 << 2;
+constexpr U32 ESTATE_ACCESS_MANAGERS        = 1 << 3;
 
 //maximum number of access list entries we can fit in one packet
-const S32 ESTATE_ACCESS_MAX_ENTRIES_PER_PACKET = 63;
+constexpr S32 ESTATE_ACCESS_MAX_ENTRIES_PER_PACKET = 63;
 
 // for reply to "getinfo", don't need to forward to all sims in estate
-const U32 ESTATE_ACCESS_SEND_TO_AGENT_ONLY = 1 << 4;
+constexpr U32 ESTATE_ACCESS_SEND_TO_AGENT_ONLY = 1 << 4;
 
-const U32 ESTATE_ACCESS_ALL = ESTATE_ACCESS_ALLOWED_AGENTS
-                              | ESTATE_ACCESS_ALLOWED_GROUPS
-                              | ESTATE_ACCESS_BANNED_AGENTS
-                              | ESTATE_ACCESS_MANAGERS;
+constexpr U32 ESTATE_ACCESS_ALL = ESTATE_ACCESS_ALLOWED_AGENTS
+                                  | ESTATE_ACCESS_ALLOWED_GROUPS
+                                  | ESTATE_ACCESS_BANNED_AGENTS
+                                  | ESTATE_ACCESS_MANAGERS;
 
 // for EstateOwnerRequest, estateaccessdelta, estateexperiencedelta messages
-const U32 ESTATE_ACCESS_APPLY_TO_ALL_ESTATES        = 1U << 0;
-const U32 ESTATE_ACCESS_APPLY_TO_MANAGED_ESTATES    = 1U << 1;
-
-const U32 ESTATE_ACCESS_ALLOWED_AGENT_ADD           = 1U << 2;
-const U32 ESTATE_ACCESS_ALLOWED_AGENT_REMOVE            = 1U << 3;
-const U32 ESTATE_ACCESS_ALLOWED_GROUP_ADD           = 1U << 4;
-const U32 ESTATE_ACCESS_ALLOWED_GROUP_REMOVE            = 1U << 5;
-const U32 ESTATE_ACCESS_BANNED_AGENT_ADD                = 1U << 6;
-const U32 ESTATE_ACCESS_BANNED_AGENT_REMOVE         = 1U << 7;
-const U32 ESTATE_ACCESS_MANAGER_ADD                 = 1U << 8;
-const U32 ESTATE_ACCESS_MANAGER_REMOVE              = 1U << 9;
-const U32 ESTATE_ACCESS_NO_REPLY                        = 1U << 10;
-const U32 ESTATE_ACCESS_FAILED_BAN_ESTATE_MANAGER   = 1U << 11;
-
-const S32 ESTATE_MAX_MANAGERS = 20;
-const S32 ESTATE_MAX_ACCESS_IDS = 500;  // max for access
-const S32 ESTATE_MAX_BANNED_IDS = 750;  // max for banned
-const S32 ESTATE_MAX_GROUP_IDS = (S32) ESTATE_ACCESS_MAX_ENTRIES_PER_PACKET;
+constexpr U32 ESTATE_ACCESS_APPLY_TO_ALL_ESTATES        = 1U << 0;
+constexpr U32 ESTATE_ACCESS_APPLY_TO_MANAGED_ESTATES    = 1U << 1;
+
+constexpr U32 ESTATE_ACCESS_ALLOWED_AGENT_ADD           = 1U << 2;
+constexpr U32 ESTATE_ACCESS_ALLOWED_AGENT_REMOVE        = 1U << 3;
+constexpr U32 ESTATE_ACCESS_ALLOWED_GROUP_ADD           = 1U << 4;
+constexpr U32 ESTATE_ACCESS_ALLOWED_GROUP_REMOVE        = 1U << 5;
+constexpr U32 ESTATE_ACCESS_BANNED_AGENT_ADD            = 1U << 6;
+constexpr U32 ESTATE_ACCESS_BANNED_AGENT_REMOVE         = 1U << 7;
+constexpr U32 ESTATE_ACCESS_MANAGER_ADD                 = 1U << 8;
+constexpr U32 ESTATE_ACCESS_MANAGER_REMOVE              = 1U << 9;
+constexpr U32 ESTATE_ACCESS_NO_REPLY                    = 1U << 10;
+constexpr U32 ESTATE_ACCESS_FAILED_BAN_ESTATE_MANAGER   = 1U << 11;
+
+constexpr S32 ESTATE_MAX_MANAGERS = 20;
+constexpr S32 ESTATE_MAX_ACCESS_IDS = 500;  // max for access
+constexpr S32 ESTATE_MAX_BANNED_IDS = 750;  // max for banned
+constexpr S32 ESTATE_MAX_GROUP_IDS = (S32) ESTATE_ACCESS_MAX_ENTRIES_PER_PACKET;
 
 // 'Sim Wide Delete' flags
-const U32 SWD_OTHERS_LAND_ONLY      = (1 << 0);
-const U32 SWD_ALWAYS_RETURN_OBJECTS = (1 << 1);
-const U32 SWD_SCRIPTED_ONLY         = (1 << 2);
+constexpr U32 SWD_OTHERS_LAND_ONLY      = (1 << 0);
+constexpr U32 SWD_ALWAYS_RETURN_OBJECTS = (1 << 1);
+constexpr U32 SWD_SCRIPTED_ONLY         = (1 << 2);
 
 // Controls experience key validity in the estate
-const U32 EXPERIENCE_KEY_TYPE_NONE      = 0;
-const U32 EXPERIENCE_KEY_TYPE_BLOCKED   = 1;
-const U32 EXPERIENCE_KEY_TYPE_ALLOWED   = 2;
-const U32 EXPERIENCE_KEY_TYPE_TRUSTED   = 3;
+constexpr U32 EXPERIENCE_KEY_TYPE_NONE      = 0;
+constexpr U32 EXPERIENCE_KEY_TYPE_BLOCKED   = 1;
+constexpr U32 EXPERIENCE_KEY_TYPE_ALLOWED   = 2;
+constexpr U32 EXPERIENCE_KEY_TYPE_TRUSTED   = 3;
 
-const U32 EXPERIENCE_KEY_TYPE_FIRST     = EXPERIENCE_KEY_TYPE_BLOCKED;
-const U32 EXPERIENCE_KEY_TYPE_LAST      = EXPERIENCE_KEY_TYPE_TRUSTED;
+constexpr U32 EXPERIENCE_KEY_TYPE_FIRST     = EXPERIENCE_KEY_TYPE_BLOCKED;
+constexpr U32 EXPERIENCE_KEY_TYPE_LAST      = EXPERIENCE_KEY_TYPE_TRUSTED;
 
 //
-const U32 ESTATE_EXPERIENCE_TRUSTED_ADD     = 1U << 2;
-const U32 ESTATE_EXPERIENCE_TRUSTED_REMOVE  = 1U << 3;
-const U32 ESTATE_EXPERIENCE_ALLOWED_ADD     = 1U << 4;
-const U32 ESTATE_EXPERIENCE_ALLOWED_REMOVE  = 1U << 5;
-const U32 ESTATE_EXPERIENCE_BLOCKED_ADD     = 1U << 6;
-const U32 ESTATE_EXPERIENCE_BLOCKED_REMOVE  = 1U << 7;
-
-const S32 ESTATE_MAX_EXPERIENCE_IDS = 8;
-
-
+constexpr U32 ESTATE_EXPERIENCE_TRUSTED_ADD     = 1U << 2;
+constexpr U32 ESTATE_EXPERIENCE_TRUSTED_REMOVE  = 1U << 3;
+constexpr U32 ESTATE_EXPERIENCE_ALLOWED_ADD     = 1U << 4;
+constexpr U32 ESTATE_EXPERIENCE_ALLOWED_REMOVE  = 1U << 5;
+constexpr U32 ESTATE_EXPERIENCE_BLOCKED_ADD     = 1U << 6;
+constexpr U32 ESTATE_EXPERIENCE_BLOCKED_REMOVE  = 1U << 7;
+
+constexpr S32 ESTATE_MAX_EXPERIENCE_IDS = 8;
 #endif
-
-
diff --git a/indra/llmessage/llregionhandle.h b/indra/llmessage/llregionhandle.h
index 9982a8260e..d68cd4d202 100644
--- a/indra/llmessage/llregionhandle.h
+++ b/indra/llmessage/llregionhandle.h
@@ -63,13 +63,13 @@ inline U64 to_region_handle_global(const F32 x_global, const F32 y_global)
     return region_handle;
 }
 
-inline BOOL to_region_handle(const F32 x_pos, const F32 y_pos, U64 *region_handle)
+inline bool to_region_handle(const F32 x_pos, const F32 y_pos, U64 *region_handle)
 {
     U32 x_int, y_int;
     if (x_pos < 0.f)
     {
 //      LL_WARNS() << "to_region_handle:Clamping negative x position " << x_pos << " to zero!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
     else
     {
@@ -78,14 +78,14 @@ inline BOOL to_region_handle(const F32 x_pos, const F32 y_pos, U64 *region_handl
     if (y_pos < 0.f)
     {
 //      LL_WARNS() << "to_region_handle:Clamping negative y position " << y_pos << " to zero!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
     else
     {
         y_int = (U32)ll_round(y_pos);
     }
     *region_handle = to_region_handle(x_int, y_int);
-    return TRUE;
+    return true;
 }
 
 // stuff the word-frame XY location of sim's SouthWest corner in x_pos, y_pos
diff --git a/indra/llmessage/llsdmessagebuilder.cpp b/indra/llmessage/llsdmessagebuilder.cpp
index 4c678b235b..8d7d51e13f 100644
--- a/indra/llmessage/llsdmessagebuilder.cpp
+++ b/indra/llmessage/llsdmessagebuilder.cpp
@@ -44,8 +44,8 @@ LLSDMessageBuilder::LLSDMessageBuilder() :
     mCurrentBlock(NULL),
     mCurrentMessageName(""),
     mCurrentBlockName(""),
-    mbSBuilt(FALSE),
-    mbSClear(TRUE)
+    mbSBuilt(false),
+    mbSClear(true)
 {
 }
 
@@ -58,8 +58,8 @@ LLSDMessageBuilder::~LLSDMessageBuilder()
 // virtual
 void LLSDMessageBuilder::newMessage(const char* name)
 {
-    mbSBuilt = FALSE;
-    mbSClear = FALSE;
+    mbSBuilt = false;
+    mbSClear = false;
 
     mCurrentMessage = LLSD::emptyMap();
     mCurrentMessageName = (char*)name;
@@ -68,8 +68,8 @@ void LLSDMessageBuilder::newMessage(const char* name)
 // virtual
 void LLSDMessageBuilder::clearMessage()
 {
-    mbSBuilt = FALSE;
-    mbSClear = TRUE;
+    mbSBuilt = false;
+    mbSClear = true;
 
     mCurrentMessage = LLSD::emptyMap();
     mCurrentMessageName = "";
@@ -96,10 +96,10 @@ void LLSDMessageBuilder::nextBlock(const char* blockname)
 }
 
 // TODO: Remove this horror...
-BOOL LLSDMessageBuilder::removeLastBlock()
+bool LLSDMessageBuilder::removeLastBlock()
 {
     /* TODO: finish implementing this */
-    return FALSE;
+    return false;
 }
 
 void LLSDMessageBuilder::addBinaryData(
@@ -168,9 +168,9 @@ void LLSDMessageBuilder::addIPPort(const char* varname, U16 v)
     (*mCurrentBlock)[varname] = v;
 }
 
-void LLSDMessageBuilder::addBOOL(const char* varname, BOOL v)
+void LLSDMessageBuilder::addBOOL(const char* varname, bool v)
 {
-    (*mCurrentBlock)[varname] = (v == TRUE);
+    (*mCurrentBlock)[varname] = v;
 }
 
 void LLSDMessageBuilder::addString(const char* varname, const char* v)
@@ -218,9 +218,9 @@ void LLSDMessageBuilder::compressMessage(U8*& buf_ptr, U32& buffer_length)
 {
 }
 
-BOOL LLSDMessageBuilder::isMessageFull(const char* blockname) const
+bool LLSDMessageBuilder::isMessageFull(const char* blockname) const
 {
-    return FALSE;
+    return false;
 }
 
 U32 LLSDMessageBuilder::buildMessage(U8*, U32, U8)
@@ -354,7 +354,7 @@ void LLSDMessageBuilder::copyFromMessageData(const LLMsgData& data)
                 break;
 
             case MVT_BOOL:
-                addBOOL(varname, *(BOOL*)mvci.getData());
+                addBOOL(varname, *(bool*)mvci.getData());
                 break;
 
             case MVT_IP_ADDR:
@@ -400,13 +400,13 @@ const LLSD& LLSDMessageBuilder::getMessage() const
 }
 
 //virtual
-void LLSDMessageBuilder::setBuilt(BOOL b) { mbSBuilt = b; }
+void LLSDMessageBuilder::setBuilt(bool b) { mbSBuilt = b; }
 
 //virtual
-BOOL LLSDMessageBuilder::isBuilt() const {return mbSBuilt;}
+bool LLSDMessageBuilder::isBuilt() const {return mbSBuilt;}
 
 //virtual
-BOOL LLSDMessageBuilder::isClear() const {return mbSClear;}
+bool LLSDMessageBuilder::isClear() const {return mbSClear;}
 
 //virtual
 S32 LLSDMessageBuilder::getMessageSize()
diff --git a/indra/llmessage/llsdmessagebuilder.h b/indra/llmessage/llsdmessagebuilder.h
index 82c70202ee..72ea6d0dd6 100644
--- a/indra/llmessage/llsdmessagebuilder.h
+++ b/indra/llmessage/llsdmessagebuilder.h
@@ -48,14 +48,14 @@ public:
     virtual void newMessage(const char* name);
 
     virtual void nextBlock(const char* blockname);
-    virtual BOOL removeLastBlock(); // TODO: babbage: remove this horror...
+    virtual bool removeLastBlock(); // TODO: babbage: remove this horror...
 
     /** All add* methods expect pointers to canonical varname strings. */
     virtual void addBinaryData(
         const char* varname,
         const void* data,
         S32 size);
-    virtual void addBOOL(const char* varname, BOOL b);
+    virtual void addBOOL(const char* varname, bool b);
     virtual void addS8(const char* varname, S8 s);
     virtual void addU8(const char* varname, U8 u);
     virtual void addS16(const char* varname, S16 i);
@@ -75,18 +75,18 @@ public:
     virtual void addString(const char* varname, const char* s);
     virtual void addString(const char* varname, const std::string& s);
 
-    virtual BOOL isMessageFull(const char* blockname) const;
+    virtual bool isMessageFull(const char* blockname) const;
     virtual void compressMessage(U8*& buf_ptr, U32& buffer_length);
 
-    virtual BOOL isBuilt() const;
-    virtual BOOL isClear() const;
+    virtual bool isBuilt() const;
+    virtual bool isClear() const;
     virtual U32 buildMessage(U8* buffer, U32 buffer_size, U8 offset_to_data);
         /**< Null implementation which returns 0. */
 
     virtual void clearMessage();
 
     // TODO: babbage: remove this horror.
-    virtual void setBuilt(BOOL b);
+    virtual void setBuilt(bool b);
 
     virtual S32 getMessageSize();
     virtual const char* getMessageName() const;
@@ -119,8 +119,8 @@ private:
     LLSD* mCurrentBlock;
     std::string mCurrentMessageName;
     std::string mCurrentBlockName;
-    BOOL mbSBuilt;
-    BOOL mbSClear;
+    bool mbSBuilt;
+    bool mbSClear;
 };
 
 #endif // LL_LLSDMESSAGEBUILDER_H
diff --git a/indra/llmessage/llsdmessagereader.cpp b/indra/llmessage/llsdmessagereader.cpp
index 00d962357b..6ade7c0dad 100644
--- a/indra/llmessage/llsdmessagereader.cpp
+++ b/indra/llmessage/llsdmessagereader.cpp
@@ -114,7 +114,7 @@ void LLSDMessageReader::getBinaryData(const char *block, const char *var,
 
 //virtual
 void LLSDMessageReader::getBOOL(const char *block, const char *var,
-                                BOOL &data,
+                                bool &data,
                                 S32 blocknum)
 {
     data = getLLSD(mMessage, block, var, blocknum);
@@ -242,7 +242,7 @@ void LLSDMessageReader::getString(const char *block, const char *var,
         return;
     }
     std::string data = getLLSD(mMessage, block, var, blocknum);
-    S32 data_size = data.size();
+    auto data_size = data.size();
     if (data_size >= buffer_size)
     {
         data_size = buffer_size - 1;
@@ -261,7 +261,7 @@ void LLSDMessageReader::getString(const char *block, const char *var,
 //virtual
 S32 LLSDMessageReader::getNumberOfBlocks(const char *blockname)
 {
-    return mMessage[blockname].size();
+    return static_cast<S32>(mMessage[blockname].size());
 }
 
 S32 getElementSize(const LLSD& llsd)
@@ -276,7 +276,7 @@ S32 getElementSize(const LLSD& llsd)
     case LLSD::TypeReal:
         return sizeof(F64);
     case LLSD::TypeString:
-        return llsd.size();
+        return static_cast<S32>(llsd.size());
     case LLSD::TypeUUID:
         return sizeof(LLUUID);
     case LLSD::TypeDate:
@@ -286,7 +286,7 @@ S32 getElementSize(const LLSD& llsd)
     case LLSD::TypeBinary:
     {
         std::vector<U8> data = llsd;
-        return data.size() * sizeof(U8);
+        return static_cast<S32>(data.size() * sizeof(U8));
     }
     case LLSD::TypeMap:
     case LLSD::TypeArray:
diff --git a/indra/llmessage/llsdmessagereader.h b/indra/llmessage/llsdmessagereader.h
index 8f84c679ba..6f4256380b 100644
--- a/indra/llmessage/llsdmessagereader.h
+++ b/indra/llmessage/llsdmessagereader.h
@@ -46,7 +46,7 @@ public:
     virtual void getBinaryData(const char *block, const char *var,
                                void *datap, S32 size, S32 blocknum = 0,
                                S32 max_size = S32_MAX);
-    virtual void getBOOL(const char *block, const char *var, BOOL &data,
+    virtual void getBOOL(const char *block, const char *var, bool &data,
                          S32 blocknum = 0);
     virtual void getS8(const char *block, const char *var, S8 &data,
                        S32 blocknum = 0);
diff --git a/indra/llmessage/lltemplatemessagebuilder.cpp b/indra/llmessage/lltemplatemessagebuilder.cpp
index be5dcadb28..758d6d343f 100644
--- a/indra/llmessage/lltemplatemessagebuilder.cpp
+++ b/indra/llmessage/lltemplatemessagebuilder.cpp
@@ -42,8 +42,8 @@ LLTemplateMessageBuilder::LLTemplateMessageBuilder(const message_template_name_m
     mCurrentSDataBlock(NULL),
     mCurrentSMessageName(NULL),
     mCurrentSBlockName(NULL),
-    mbSBuilt(FALSE),
-    mbSClear(TRUE),
+    mbSBuilt(false),
+    mbSClear(true),
     mCurrentSendTotal(0),
     mMessageTemplates(name_template_map)
 {
@@ -59,8 +59,8 @@ LLTemplateMessageBuilder::~LLTemplateMessageBuilder()
 // virtual
 void LLTemplateMessageBuilder::newMessage(const char *name)
 {
-    mbSBuilt = FALSE;
-    mbSClear = FALSE;
+    mbSBuilt = false;
+    mbSClear = false;
 
     mCurrentSendTotal = 0;
 
@@ -103,8 +103,8 @@ void LLTemplateMessageBuilder::newMessage(const char *name)
 // virtual
 void LLTemplateMessageBuilder::clearMessage()
 {
-    mbSBuilt = FALSE;
-    mbSClear = TRUE;
+    mbSBuilt = false;
+    mbSClear = true;
 
     mCurrentSendTotal = 0;
 
@@ -220,7 +220,7 @@ void LLTemplateMessageBuilder::nextBlock(const char* blockname)
 }
 
 // TODO: Remove this horror...
-BOOL LLTemplateMessageBuilder::removeLastBlock()
+bool LLTemplateMessageBuilder::removeLastBlock()
 {
     if (mCurrentSBlockName)
     {
@@ -262,24 +262,24 @@ BOOL LLTemplateMessageBuilder::removeLastBlock()
 
                 if (num_blocks <= 1)
                 {
-                    // we just blew away the last one, so return FALSE
+                    // we just blew away the last one, so return false
                     LL_WARNS() << "not blowing away the only block of message "
                             << mCurrentSMessageName
                             << ". Block: " << block_name
                             << ". Number: " << num_blocks
                             << LL_ENDL;
-                    return FALSE;
+                    return false;
                 }
                 else
                 {
                     // Decrement the counter.
                     block_data->mBlockNumber--;
-                    return TRUE;
+                    return true;
                 }
             }
         }
     }
-    return FALSE;
+    return false;
 }
 
 // add data to variable in current block
@@ -445,10 +445,8 @@ void LLTemplateMessageBuilder::addIPPort(const char *varname, U16 u)
     addData(varname, &u, MVT_IP_PORT, sizeof(u));
 }
 
-void LLTemplateMessageBuilder::addBOOL(const char* varname, BOOL b)
+void LLTemplateMessageBuilder::addBOOL(const char* varname, bool b)
 {
-    // Can't just cast a BOOL (actually a U32) to a U8.
-    // In some cases the low order bits will be zero.
     U8 temp = (b != 0);
     addData(varname, &temp, MVT_BOOL, sizeof(temp));
 }
@@ -584,15 +582,15 @@ void LLTemplateMessageBuilder::compressMessage(U8*& buf_ptr, U32& buffer_length)
     }
 }
 
-BOOL LLTemplateMessageBuilder::isMessageFull(const char* blockname) const
+bool LLTemplateMessageBuilder::isMessageFull(const char* blockname) const
 {
     if(mCurrentSendTotal > MTUBYTES)
     {
-        return TRUE;
+        return true;
     }
     if(!blockname)
     {
-        return FALSE;
+        return false;
     }
     char* bnamep = (char*)blockname;
     S32 max;
@@ -614,9 +612,9 @@ BOOL LLTemplateMessageBuilder::isMessageFull(const char* blockname) const
     }
     if(mCurrentSMessageData->mMemberBlocks[bnamep]->mBlockNumber >= max)
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 static S32 buildBlock(U8* buffer, S32 buffer_size, const LLMessageBlock* template_data, LLMsgData* message_data)
@@ -823,7 +821,7 @@ U32 LLTemplateMessageBuilder::buildMessage(
     {
         result += buildBlock(buffer + result, buffer_size - result, *iter, mCurrentSMessageData);
     }
-    mbSBuilt = TRUE;
+    mbSBuilt = true;
 
     return result;
 }
@@ -877,13 +875,13 @@ void LLTemplateMessageBuilder::copyFromLLSD(const LLSD&)
 }
 
 //virtual
-void LLTemplateMessageBuilder::setBuilt(BOOL b) { mbSBuilt = b; }
+void LLTemplateMessageBuilder::setBuilt(bool b) { mbSBuilt = b; }
 
 //virtual
-BOOL LLTemplateMessageBuilder::isBuilt() const {return mbSBuilt;}
+bool LLTemplateMessageBuilder::isBuilt() const {return mbSBuilt;}
 
 //virtual
-BOOL LLTemplateMessageBuilder::isClear() const {return mbSClear;}
+bool LLTemplateMessageBuilder::isClear() const {return mbSClear;}
 
 //virtual
 S32 LLTemplateMessageBuilder::getMessageSize() {return mCurrentSendTotal;}
diff --git a/indra/llmessage/lltemplatemessagebuilder.h b/indra/llmessage/lltemplatemessagebuilder.h
index f399dc8acc..b86ec4d87d 100644
--- a/indra/llmessage/lltemplatemessagebuilder.h
+++ b/indra/llmessage/lltemplatemessagebuilder.h
@@ -49,12 +49,12 @@ public:
     virtual void newMessage(const char* name);
 
     virtual void nextBlock(const char* blockname);
-    virtual BOOL removeLastBlock(); // TODO: babbage: remove this horror...
+    virtual bool removeLastBlock(); // TODO: babbage: remove this horror...
 
     /** All add* methods expect pointers to canonical varname strings. */
     virtual void addBinaryData(const char *varname, const void *data,
                                S32 size);
-    virtual void addBOOL(const char* varname, BOOL b);
+    virtual void addBOOL(const char* varname, bool b);
     virtual void addS8(const char* varname, S8 s);
     virtual void addU8(const char* varname, U8 u);
     virtual void addS16(const char* varname, S16 i);
@@ -74,18 +74,18 @@ public:
     virtual void addString(const char* varname, const char* s);
     virtual void addString(const char* varname, const std::string& s);
 
-    virtual BOOL isMessageFull(const char* blockname) const;
+    virtual bool isMessageFull(const char* blockname) const;
     virtual void compressMessage(U8*& buf_ptr, U32& buffer_length);
 
-    virtual BOOL isBuilt() const;
-    virtual BOOL isClear() const;
+    virtual bool isBuilt() const;
+    virtual bool isClear() const;
     virtual U32 buildMessage(U8* buffer, U32 buffer_size, U8 offset_to_data);
         /**< Return built message size */
 
     virtual void clearMessage();
 
     // TODO: babbage: remove this horror.
-    virtual void setBuilt(BOOL b);
+    virtual void setBuilt(bool b);
 
     virtual S32 getMessageSize();
     virtual const char* getMessageName() const;
@@ -106,8 +106,8 @@ private:
     LLMsgBlkData* mCurrentSDataBlock;
     char* mCurrentSMessageName;
     char* mCurrentSBlockName;
-    BOOL mbSBuilt;
-    BOOL mbSClear;
+    bool mbSBuilt;
+    bool mbSClear;
     S32  mCurrentSendTotal;
     const message_template_name_map_t& mMessageTemplates;
 };
diff --git a/indra/llmessage/lltemplatemessagedispatcher.cpp b/indra/llmessage/lltemplatemessagedispatcher.cpp
index 267c201705..0e709d6c75 100644
--- a/indra/llmessage/lltemplatemessagedispatcher.cpp
+++ b/indra/llmessage/lltemplatemessagedispatcher.cpp
@@ -44,7 +44,7 @@ void LLTemplateMessageDispatcher::dispatch(const std::string& msg_name,
                                            LLHTTPNode::ResponsePtr responsep)
 {
     std::vector<U8> data = message["body"]["binary-template-data"].asBinary();
-    U32 size = data.size();
+    auto size = data.size();
     if(size == 0)
     {
         return;
@@ -53,7 +53,7 @@ void LLTemplateMessageDispatcher::dispatch(const std::string& msg_name,
     LLHost host;
     host = gMessageSystem->getSender();
 
-    bool validate_message = mTemplateMessageReader.validateMessage(&(data[0]), data.size(), host, true);
+    bool validate_message = mTemplateMessageReader.validateMessage(&(data[0]), static_cast<S32>(size), host, true);
 
     if (validate_message)
     {
diff --git a/indra/llmessage/lltemplatemessagereader.cpp b/indra/llmessage/lltemplatemessagereader.cpp
index c24c850a86..1432fd1efd 100644
--- a/indra/llmessage/lltemplatemessagereader.cpp
+++ b/indra/llmessage/lltemplatemessagereader.cpp
@@ -287,11 +287,11 @@ void LLTemplateMessageReader::getU8(const char *block, const char *var,
 }
 
 void LLTemplateMessageReader::getBOOL(const char *block, const char *var,
-                                          BOOL &b, S32 blocknum )
+                                          bool &b, S32 blocknum )
 {
     U8 value(0);
     getData(block, var, &value, sizeof(U8), blocknum);
-    b = (BOOL) value;
+    b = (bool)value;
 }
 
 void LLTemplateMessageReader::getS16(const char *block, const char *var,
@@ -446,7 +446,7 @@ S32 LLTemplateMessageReader::getMessageSize() const
 }
 
 // Returns template for the message contained in buffer
-BOOL LLTemplateMessageReader::decodeTemplate(
+bool LLTemplateMessageReader::decodeTemplate(
         const U8* buffer, S32 buffer_size,  // inputs
         LLMessageTemplate** msg_template, bool custom ) // outputs
 {
@@ -456,7 +456,7 @@ BOOL LLTemplateMessageReader::decodeTemplate(
     if (buffer_size <= 0)
     {
         LL_WARNS() << "No message waiting for decode!" << LL_ENDL;
-        return(FALSE);
+        return(false);
     }
 
     U32 num = 0;
@@ -493,7 +493,7 @@ BOOL LLTemplateMessageReader::decodeTemplate(
         if (!custom)
         LL_WARNS() << "Packet with unusable length received (too short): "
                 << buffer_size << LL_ENDL;
-        return(FALSE);
+        return(false);
     }
 
     LLMessageTemplate* temp = get_ptr_in_map(mMessageNumbers,num);
@@ -508,10 +508,11 @@ BOOL LLTemplateMessageReader::decodeTemplate(
         LL_WARNS_ONCE() << "Message #" << std::hex << num << std::dec
                         << " received but not registered!" << LL_ENDL;
         }
-        return(FALSE);
+        //gMessageSystem->callExceptionFunc(MX_UNREGISTERED_MESSAGE);
+        return(false);
     }
 
-    return(TRUE);
+    return(true);
 }
 
 void LLTemplateMessageReader::logRanOffEndOfPacket( const LLHost& host, const S32 where, const S32 wanted )
@@ -536,7 +537,7 @@ void LLTemplateMessageReader::logRanOffEndOfPacket( const LLHost& host, const S3
 static LLTrace::BlockTimerStatHandle FTM_PROCESS_MESSAGES("Process Messages");
 
 // decode a given message
-BOOL LLTemplateMessageReader::decodeData(const U8* buffer, const LLHost& sender, bool custom )
+bool LLTemplateMessageReader::decodeData(const U8* buffer, const LLHost& sender, bool custom )
 {
     LL_RECORD_BLOCK_TIME(FTM_PROCESS_MESSAGES);
 
@@ -598,7 +599,7 @@ BOOL LLTemplateMessageReader::decodeData(const U8* buffer, const LLHost& sender,
         {
             if (!custom)
             LL_ERRS() << "Unknown block type" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         LLMsgBlkData* cur_data_block = NULL;
@@ -706,7 +707,7 @@ BOOL LLTemplateMessageReader::decodeData(const U8* buffer, const LLHost& sender,
         && !mCurrentRMessageTemplate->mMemberBlocks.empty())
     {
         LL_WARNS() << "Empty message '" << mCurrentRMessageTemplate->mName << "' (no blocks)" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if (!custom)
@@ -756,10 +757,10 @@ BOOL LLTemplateMessageReader::decodeData(const U8* buffer, const LLHost& sender,
             }
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLTemplateMessageReader::validateMessage(const U8* buffer,
+bool LLTemplateMessageReader::validateMessage(const U8* buffer,
                                               S32 buffer_size,
                                               const LLHost& sender,
                                               bool trusted,
@@ -783,7 +784,7 @@ BOOL LLTemplateMessageReader::validateMessage(const U8* buffer,
             << " from "
             << ((trusted) ? "trusted " : "untrusted ")
             << sender << LL_ENDL;
-        valid = FALSE;
+        valid = false;
     }
 
     if(valid && isUdpBanned())
@@ -791,12 +792,12 @@ BOOL LLTemplateMessageReader::validateMessage(const U8* buffer,
         LL_WARNS() << "Received UDP black listed message "
                 <<  getMessageName()
                 << " from " << sender << LL_ENDL;
-        valid = FALSE;
+        valid = false;
     }
     return valid;
 }
 
-BOOL LLTemplateMessageReader::readMessage(const U8* buffer,
+bool LLTemplateMessageReader::readMessage(const U8* buffer,
                                           const LLHost& sender)
 {
     return decodeData(buffer, sender);
diff --git a/indra/llmessage/lltemplatemessagereader.h b/indra/llmessage/lltemplatemessagereader.h
index 772b8fd607..0f7160d328 100644
--- a/indra/llmessage/lltemplatemessagereader.h
+++ b/indra/llmessage/lltemplatemessagereader.h
@@ -47,7 +47,7 @@ public:
     virtual void getBinaryData(const char *blockname, const char *varname,
                                void *datap, S32 size, S32 blocknum = 0,
                                S32 max_size = S32_MAX);
-    virtual void getBOOL(const char *block, const char *var, BOOL &data,
+    virtual void getBOOL(const char *block, const char *var, bool &data,
                          S32 blocknum = 0);
     virtual void getS8(const char *block, const char *var, S8 &data,
                        S32 blocknum = 0);
@@ -98,15 +98,15 @@ public:
 
     virtual void copyToBuilder(LLMessageBuilder&) const;
 
-    BOOL validateMessage(const U8* buffer, S32 buffer_size,
+    bool validateMessage(const U8* buffer, S32 buffer_size,
                          const LLHost& sender, bool trusted = false, bool custom = false);
-    BOOL readMessage(const U8* buffer, const LLHost& sender);
+    bool readMessage(const U8* buffer, const LLHost& sender);
 
     bool isTrusted() const;
     bool isBanned(bool trusted_source) const;
     bool isUdpBanned() const;
 
-    BOOL               decodeData(const U8* buffer, const LLHost& sender, bool custom = false);
+    bool decodeData(const U8* buffer, const LLHost& sender, bool custom = false );
     LLMessageTemplate* getTemplate();
 
 private:
@@ -114,13 +114,11 @@ private:
     void getData(const char *blockname, const char *varname, void *datap,
                  S32 size = 0, S32 blocknum = 0, S32 max_size = S32_MAX);
 
-    BOOL decodeTemplate(const U8* buffer, S32 buffer_size,  // inputs
+    bool decodeTemplate(const U8* buffer, S32 buffer_size,  // inputs
                         LLMessageTemplate** msg_template, bool custom = false ); // outputs
 
     void logRanOffEndOfPacket( const LLHost& host, const S32 where, const S32 wanted );
 
-    //BOOL decodeData(const U8* buffer, const LLHost& sender );
-
     S32 mReceiveSize;
     LLMessageTemplate* mCurrentRMessageTemplate;
     LLMsgData* mCurrentRMessageData;
diff --git a/indra/llmessage/llthrottle.cpp b/indra/llmessage/llthrottle.cpp
index 0113414d1b..5ce96fc551 100644
--- a/indra/llmessage/llthrottle.cpp
+++ b/indra/llmessage/llthrottle.cpp
@@ -37,7 +37,7 @@ LLThrottle::LLThrottle(const F32 rate)
     mRate = rate;
     mAvailable = 0.f;
     mLookaheadSecs = 0.25f;
-    mLastSendTime = LLMessageSystem::getMessageTimeSeconds(TRUE);
+    mLastSendTime = LLMessageSystem::getMessageTimeSeconds(true);
 }
 
 
@@ -57,9 +57,9 @@ F32 LLThrottle::getAvailable()
     return mAvailable + (mRate * elapsed_time.value());
 }
 
-BOOL LLThrottle::checkOverflow(const F32 amount)
+bool LLThrottle::checkOverflow(const F32 amount)
 {
-    BOOL retval = TRUE;
+    bool retval = true;
 
     F32 lookahead_amount = mRate * mLookaheadSecs;
 
@@ -72,17 +72,17 @@ BOOL LLThrottle::checkOverflow(const F32 amount)
     {
         // ...enough space to send this message
         // Also do if > lookahead so we can use if amount > capped amount.
-        retval = FALSE;
+        retval = false;
     }
 
     return retval;
 }
 
-BOOL LLThrottle::throttleOverflow(const F32 amount)
+bool LLThrottle::throttleOverflow(const F32 amount)
 {
     F32Seconds elapsed_time;
     F32 lookahead_amount;
-    BOOL retval = TRUE;
+    bool retval = true;
 
     lookahead_amount = mRate * mLookaheadSecs;
 
@@ -97,12 +97,12 @@ BOOL LLThrottle::throttleOverflow(const F32 amount)
         // ...channel completely open, so allow send regardless
         // of size.  This allows sends on very low BPS channels.
         mAvailable = lookahead_amount;
-        retval = FALSE;
+        retval = false;
     }
     else if (mAvailable > amount)
     {
         // ...enough space to send this message
-        retval = FALSE;
+        retval = false;
     }
 
     // We actually already sent the bits.
@@ -236,15 +236,15 @@ void LLThrottleGroup::resetDynamicAdjust()
 }
 
 
-BOOL LLThrottleGroup::setNominalBPS(F32* throttle_vec)
+bool LLThrottleGroup::setNominalBPS(F32* throttle_vec)
 {
-    BOOL changed = FALSE;
+    bool changed = false;
     S32 i;
     for (i = 0; i < TC_EOF; i++)
     {
         if (mNominalBPS[i] != throttle_vec[i])
         {
-            changed = TRUE;
+            changed = true;
             mNominalBPS[i] = throttle_vec[i];
         }
     }
@@ -285,9 +285,9 @@ S32     LLThrottleGroup::getAvailable(S32 throttle_cat)
 }
 
 
-BOOL LLThrottleGroup::checkOverflow(S32 throttle_cat, F32 bits)
+bool LLThrottleGroup::checkOverflow(S32 throttle_cat, F32 bits)
 {
-    BOOL retval = TRUE;
+    bool retval = true;
 
     F32 category_bps = mCurrentBPS[throttle_cat];
     F32 lookahead_bits = category_bps * THROTTLE_LOOKAHEAD_TIME;
@@ -302,23 +302,23 @@ BOOL LLThrottleGroup::checkOverflow(S32 throttle_cat, F32 bits)
         // ...channel completely open, so allow send regardless
         // of size.  This allows sends on very low BPS channels.
         mBitsAvailable[throttle_cat] = lookahead_bits;
-        retval = FALSE;
+        retval = false;
     }
     else if ( bits_available > bits )
     {
         // ...enough space to send this message
-        retval = FALSE;
+        retval = false;
     }
 
     return retval;
 }
 
-BOOL LLThrottleGroup::throttleOverflow(S32 throttle_cat, F32 bits)
+bool LLThrottleGroup::throttleOverflow(S32 throttle_cat, F32 bits)
 {
     F32Seconds elapsed_time;
     F32 category_bps;
     F32 lookahead_bits;
-    BOOL retval = TRUE;
+    bool retval = true;
 
     category_bps = mCurrentBPS[throttle_cat];
     lookahead_bits = category_bps * THROTTLE_LOOKAHEAD_TIME;
@@ -333,12 +333,12 @@ BOOL LLThrottleGroup::throttleOverflow(S32 throttle_cat, F32 bits)
         // ...channel completely open, so allow send regardless
         // of size.  This allows sends on very low BPS channels.
         mBitsAvailable[throttle_cat] = lookahead_bits;
-        retval = FALSE;
+        retval = false;
     }
     else if ( mBitsAvailable[throttle_cat] > bits )
     {
         // ...enough space to send this message
-        retval = FALSE;
+        retval = false;
     }
 
     // We actually already sent the bits.
@@ -354,7 +354,7 @@ BOOL LLThrottleGroup::throttleOverflow(S32 throttle_cat, F32 bits)
 }
 
 
-BOOL LLThrottleGroup::dynamicAdjust()
+bool LLThrottleGroup::dynamicAdjust()
 {
     const F32Seconds DYNAMIC_ADJUST_TIME(1.0f);
     const F32 CURRENT_PERIOD_WEIGHT = .25f;     // how much weight to give to last period while determining BPS utilization
@@ -370,7 +370,7 @@ BOOL LLThrottleGroup::dynamicAdjust()
     // Only dynamically adjust every few seconds
     if ((mt_sec - mDynamicAdjustTime) < DYNAMIC_ADJUST_TIME)
     {
-        return FALSE;
+        return false;
     }
     mDynamicAdjustTime = mt_sec;
 
@@ -394,11 +394,11 @@ BOOL LLThrottleGroup::dynamicAdjust()
 
     // Look for busy channels
     // TODO: Fold into loop above.
-    BOOL channels_busy = FALSE;
+    bool channels_busy = false;
     F32  busy_nominal_sum = 0;
-    BOOL channel_busy[TC_EOF];
-    BOOL channel_idle[TC_EOF];
-    BOOL channel_over_nominal[TC_EOF];
+    bool channel_busy[TC_EOF];
+    bool channel_idle[TC_EOF];
+    bool channel_over_nominal[TC_EOF];
 
     for (i = 0; i < TC_EOF; i++)
     {
@@ -406,34 +406,34 @@ BOOL LLThrottleGroup::dynamicAdjust()
         if (mBitsSentHistory[i] >= BUSY_PERCENT * DYNAMIC_ADJUST_TIME.value() * mCurrentBPS[i])
         {
             // this channel is busy
-            channels_busy = TRUE;
+            channels_busy = true;
             busy_nominal_sum += mNominalBPS[i];     // use for allocation of pooled idle bandwidth
-            channel_busy[i] = TRUE;
+            channel_busy[i] = true;
         }
         else
         {
-            channel_busy[i] = FALSE;
+            channel_busy[i] = false;
         }
 
         // Is this an idle channel?
         if ((mBitsSentHistory[i] < IDLE_PERCENT * DYNAMIC_ADJUST_TIME.value() * mCurrentBPS[i]) &&
             (mBitsAvailable[i] > 0))
         {
-            channel_idle[i] = TRUE;
+            channel_idle[i] = true;
         }
         else
         {
-            channel_idle[i] = FALSE;
+            channel_idle[i] = false;
         }
 
         // Is this an overpumped channel?
         if (mCurrentBPS[i] > mNominalBPS[i])
         {
-            channel_over_nominal[i] = TRUE;
+            channel_over_nominal[i] = true;
         }
         else
         {
-            channel_over_nominal[i] = FALSE;
+            channel_over_nominal[i] = false;
         }
     }
 
@@ -573,5 +573,5 @@ BOOL LLThrottleGroup::dynamicAdjust()
             }
         }
     }
-    return TRUE;
+    return true;
 }
diff --git a/indra/llmessage/llthrottle.h b/indra/llmessage/llthrottle.h
index 9450f4de88..b8a8c9f1f7 100644
--- a/indra/llmessage/llthrottle.h
+++ b/indra/llmessage/llthrottle.h
@@ -41,8 +41,8 @@ public:
     ~LLThrottle() { }
 
     void setRate(const F32 rate);
-    BOOL checkOverflow(const F32 amount); // I'm about to add an amount, TRUE if would overflow throttle
-    BOOL throttleOverflow(const F32 amount); // I just sent amount, TRUE if that overflowed the throttle
+    bool checkOverflow(const F32 amount); // I'm about to add an amount, true if would overflow throttle
+    bool throttleOverflow(const F32 amount); // I just sent amount, true if that overflowed the throttle
 
     F32 getAvailable(); // Return the available bits
     F32 getRate() const             { return mRate; }
@@ -73,10 +73,10 @@ public:
     ~LLThrottleGroup() { }
 
     void    resetDynamicAdjust();
-    BOOL    checkOverflow(S32 throttle_cat, F32 bits);      // I'm about to send bits, TRUE if would overflow channel
-    BOOL    throttleOverflow(S32 throttle_cat, F32 bits);   // I just sent bits, TRUE if that overflowed the channel
-    BOOL    dynamicAdjust();        // Shift bandwidth from idle channels to busy channels, TRUE if adjustment occurred
-    BOOL    setNominalBPS(F32* throttle_vec);               // TRUE if any value was different, resets adjustment system if was different
+    bool    checkOverflow(S32 throttle_cat, F32 bits);      // I'm about to send bits, true if would overflow channel
+    bool    throttleOverflow(S32 throttle_cat, F32 bits);   // I just sent bits, true if that overflowed the channel
+    bool    dynamicAdjust();        // Shift bandwidth from idle channels to busy channels, true if adjustment occurred
+    bool    setNominalBPS(F32* throttle_vec);               // true if any value was different, resets adjustment system if was different
 
     S32     getAvailable(S32 throttle_cat);                 // Return bits available in the channel
 
diff --git a/indra/llmessage/lltransfermanager.cpp b/indra/llmessage/lltransfermanager.cpp
index 7f6ff3b025..72d623ea42 100644
--- a/indra/llmessage/lltransfermanager.cpp
+++ b/indra/llmessage/lltransfermanager.cpp
@@ -49,7 +49,7 @@ LLTransferSource::stype_scfunc_map LLTransferSource::sSourceCreateMap;
 //
 
 LLTransferManager::LLTransferManager() :
-    mValid(FALSE)
+    mValid(false)
 {
     S32 i;
     for (i = 0; i < LLTTT_NUM_TYPES; i++)
@@ -78,7 +78,7 @@ void LLTransferManager::init()
     {
         LL_ERRS() << "Double initializing LLTransferManager!" << LL_ENDL;
     }
-    mValid = TRUE;
+    mValid = true;
 
     // Register message system handlers
     gMessageSystem->setHandlerFunc("TransferRequest", processTransferRequest, NULL);
@@ -90,7 +90,7 @@ void LLTransferManager::init()
 
 void LLTransferManager::cleanup()
 {
-    mValid = FALSE;
+    mValid = false;
 
     host_tc_map::iterator iter;
     for (iter = mTransferConnections.begin(); iter != mTransferConnections.end(); iter++)
@@ -254,7 +254,7 @@ void LLTransferManager::processTransferRequest(LLMessageSystem *msgp, void **)
     msgp->getBinaryData("TransferInfo", "Params", tmp, size);
 
     LLDataPackerBinaryBuffer dpb(tmp, MAX_PARAMS_SIZE);
-    BOOL unpack_ok = tsp->unpackParams(dpb);
+    bool unpack_ok = tsp->unpackParams(dpb);
     if (!unpack_ok)
     {
         // This should only happen if the data is corrupt or
@@ -342,7 +342,7 @@ void LLTransferManager::processTransferInfo(LLMessageSystem *msgp, void **)
 
     //LL_INFOS() << "Receiving " << transfer_id << ", size " << size << " bytes" << LL_ENDL;
     ttp->setSize(size);
-    ttp->setGotInfo(TRUE);
+    ttp->setGotInfo(true);
 
     // OK, at this point we to handle any delayed transfer packets (which could happen
     // if this packet was lost)
@@ -505,7 +505,7 @@ void LLTransferManager::processTransferPacket(LLMessageSystem *msgp, void **)
     // NOTE: THERE IS A CUT AND PASTE OF THIS CODE IN THE TRANSFERINFO HANDLER
     // SO WE CAN PLAY BACK DELAYED PACKETS THERE!!!!!!!!!!!!!!!!!!!!!!!!!
     //
-    BOOL done = FALSE;
+    bool done = false;
     while (!done)
     {
         LLTSCode ret_code = ttp->dataCallback(packet_id, tmp_data, size);
@@ -557,7 +557,7 @@ void LLTransferManager::processTransferPacket(LLMessageSystem *msgp, void **)
         else
         {
             // No matching delayed packet, abort it.
-            done = TRUE;
+            done = true;
         }
     }
 }
@@ -780,7 +780,7 @@ void LLTransferSourceChannel::updateTransfers()
 
     LLPriQueueMap<LLTransferSource *>::pqm_iter iter, next;
 
-    BOOL done = FALSE;
+    bool done = false;
     for (iter = mTransferSources.mMap.begin(); (iter != mTransferSources.mMap.end()) && !done;)
     {
         //LL_INFOS() << "LLTransferSourceChannel::updateTransfers()" << LL_ENDL;
@@ -791,7 +791,7 @@ void LLTransferSourceChannel::updateTransfers()
         LLTransferSource *tsp = iter->second;
         U8 *datap = NULL;
         S32 data_size = 0;
-        BOOL delete_data = FALSE;
+        bool delete_data = false;
         S32 packet_id = 0;
         S32 sent_bytes = 0;
         LLTSCode status = LLTS_OK;
@@ -822,7 +822,7 @@ void LLTransferSourceChannel::updateTransfers()
         gMessageSystem->addS32("Status", status);
         gMessageSystem->addBinaryData("Data", datap, data_size);
         sent_bytes = gMessageSystem->getCurrentSendTotal();
-        gMessageSystem->sendReliable(getHost(), LL_DEFAULT_RELIABLE_RETRIES, TRUE, F32Seconds(0.f),
+        gMessageSystem->sendReliable(getHost(), LL_DEFAULT_RELIABLE_RETRIES, true, F32Seconds(0.f),
                                      LLTransferManager::reliablePacketCallback, (void**)cb_uuid);
 
         // Do bookkeeping for the throttle
@@ -1207,7 +1207,7 @@ LLTransferTarget::LLTransferTarget(
     mSourceType(source_type),
     mID(transfer_id),
     mChannelp(NULL),
-    mGotInfo(FALSE),
+    mGotInfo(false),
     mSize(0),
     mLastPacketID(-1)
 {
@@ -1335,7 +1335,7 @@ void LLTransferSourceParamsInvItem::packParams(LLDataPacker &dp) const
 }
 
 
-BOOL LLTransferSourceParamsInvItem::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceParamsInvItem::unpackParams(LLDataPacker &dp)
 {
     S32 tmp_at;
 
@@ -1349,7 +1349,7 @@ BOOL LLTransferSourceParamsInvItem::unpackParams(LLDataPacker &dp)
 
     mAssetType = (LLAssetType::EType)tmp_at;
 
-    return TRUE;
+    return true;
 }
 
 LLTransferSourceParamsEstate::LLTransferSourceParamsEstate() :
@@ -1387,7 +1387,7 @@ void LLTransferSourceParamsEstate::packParams(LLDataPacker &dp) const
 }
 
 
-BOOL LLTransferSourceParamsEstate::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceParamsEstate::unpackParams(LLDataPacker &dp)
 {
     S32 tmp_et;
 
@@ -1397,5 +1397,5 @@ BOOL LLTransferSourceParamsEstate::unpackParams(LLDataPacker &dp)
 
     mEstateAssetType = (EstateAssetType)tmp_et;
 
-    return TRUE;
+    return true;
 }
diff --git a/indra/llmessage/lltransfermanager.h b/indra/llmessage/lltransfermanager.h
index 9e42797c31..ada5528b49 100644
--- a/indra/llmessage/lltransfermanager.h
+++ b/indra/llmessage/lltransfermanager.h
@@ -121,7 +121,7 @@ public:
 
     LLTransferSource *findTransferSource(const LLUUID &transfer_id);
 
-    BOOL                        isValid() const         { return mValid; }
+    bool                        isValid() const         { return mValid; }
 
     static void processTransferRequest(LLMessageSystem *mesgsys, void **);
     static void processTransferInfo(LLMessageSystem *mesgsys, void **);
@@ -138,13 +138,13 @@ public:
     void addTransferBitsOut(const LLTransferChannelType tctype, const S32 bits) { mTransferBitsOut[tctype] += bits; }
 protected:
     LLTransferConnection        *getTransferConnection(const LLHost &host);
-    BOOL                        removeTransferConnection(const LLHost &host);
+    bool                        removeTransferConnection(const LLHost &host);
 
 protected:
     // Convenient typedefs
     typedef std::map<LLHost, LLTransferConnection *> host_tc_map;
 
-    BOOL    mValid;
+    bool    mValid;
     LLHost  mHost;
 
     S32     mTransferBitsIn[LLTTT_NUM_TYPES];
@@ -263,7 +263,7 @@ public:
     virtual ~LLTransferSourceParams();
 
     virtual void packParams(LLDataPacker &dp) const = 0;
-    virtual BOOL unpackParams(LLDataPacker &dp) = 0;
+    virtual bool unpackParams(LLDataPacker &dp) = 0;
 
     LLTransferSourceType getType() const            { return mType; }
 
@@ -300,13 +300,13 @@ protected:
                                          const S32 max_bytes,
                                          U8 **datap,
                                          S32 &returned_bytes,
-                                         BOOL &delete_returned) = 0;
+                                         bool &delete_returned) = 0;
 
     // The completionCallback is GUARANTEED to be called before the destructor.
     virtual void            completionCallback(const LLTSCode status) = 0;
 
     virtual void packParams(LLDataPacker& dp) const = 0;
-    virtual BOOL unpackParams(LLDataPacker& dp) = 0;
+    virtual bool unpackParams(LLDataPacker& dp) = 0;
 
     virtual S32             getNextPacketID()                       { return mLastPacketID + 1; }
     virtual void            setLastPacketID(const S32 packet_id)    { mLastPacketID = packet_id; }
@@ -408,8 +408,8 @@ protected:
     virtual S32             getNextPacketID()                       { return mLastPacketID + 1; }
     virtual void            setLastPacketID(const S32 packet_id)    { mLastPacketID = packet_id; }
     void                    setSize(const S32 size)                 { mSize = size; }
-    void                    setGotInfo(const BOOL got_info)         { mGotInfo = got_info; }
-    BOOL                    gotInfo() const                         { return mGotInfo; }
+    void                    setGotInfo(const bool got_info)         { mGotInfo = got_info; }
+    bool                    gotInfo() const                         { return mGotInfo; }
 
     bool addDelayedPacket(
         const S32 packet_id,
@@ -425,7 +425,7 @@ protected:
     LLTransferSourceType mSourceType;
     LLUUID                  mID;
     LLTransferTargetChannel *mChannelp;
-    BOOL                    mGotInfo;
+    bool                    mGotInfo;
     S32                     mSize;
     S32                     mLastPacketID;
 
@@ -440,7 +440,7 @@ public:
     LLTransferSourceParamsInvItem();
     virtual ~LLTransferSourceParamsInvItem() {}
     /*virtual*/ void packParams(LLDataPacker &dp) const;
-    /*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+    /*virtual*/ bool unpackParams(LLDataPacker &dp);
 
     void setAgentSession(const LLUUID &agent_id, const LLUUID &session_id);
     void setInvItem(const LLUUID &owner_id, const LLUUID &task_id, const LLUUID &item_id);
@@ -472,7 +472,7 @@ public:
     LLTransferSourceParamsEstate();
     virtual ~LLTransferSourceParamsEstate() {}
     /*virtual*/ void packParams(LLDataPacker &dp) const;
-    /*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+    /*virtual*/ bool unpackParams(LLDataPacker &dp);
 
     void setAgentSession(const LLUUID &agent_id, const LLUUID &session_id);
     void setEstateAssetType(const EstateAssetType etype);
diff --git a/indra/llmessage/lltransfersourceasset.cpp b/indra/llmessage/lltransfersourceasset.cpp
index 3ffade9bdc..082f12b8bf 100644
--- a/indra/llmessage/lltransfersourceasset.cpp
+++ b/indra/llmessage/lltransfersourceasset.cpp
@@ -36,7 +36,7 @@
 
 LLTransferSourceAsset::LLTransferSourceAsset(const LLUUID &request_id, const F32 priority) :
     LLTransferSource(LLTST_ASSET, request_id, priority),
-    mGotResponse(FALSE),
+    mGotResponse(false),
     mCurPos(0)
 {
 }
@@ -62,7 +62,7 @@ void LLTransferSourceAsset::initTransfer()
                 mParams.getAssetType(),
                 LLTransferSourceAsset::responderCallback,
                 tidp,
-                FALSE);
+                false);
         }
         else
         {
@@ -91,7 +91,7 @@ LLTSCode LLTransferSourceAsset::dataCallback(const S32 packet_id,
                                             const S32 max_bytes,
                                             U8 **data_handle,
                                             S32 &returned_bytes,
-                                            BOOL &delete_returned)
+                                            bool &delete_returned)
 {
     //LL_INFOS() << "LLTransferSourceAsset::dataCallback" << LL_ENDL;
     if (!mGotResponse)
@@ -120,7 +120,7 @@ LLTSCode LLTransferSourceAsset::dataCallback(const S32 packet_id,
         return LLTS_ERROR;
     }
 
-    delete_returned = TRUE;
+    delete_returned = true;
     U8 *tmpp = new U8[max_bytes];
     *data_handle = tmpp;
     if (!vf.read(tmpp, max_bytes))      /* Flawfinder: Ignore */
@@ -129,7 +129,7 @@ LLTSCode LLTransferSourceAsset::dataCallback(const S32 packet_id,
         delete[] tmpp;
         *data_handle = NULL;
         returned_bytes = 0;
-        delete_returned = FALSE;
+        delete_returned = false;
         return LLTS_ERROR;
     }
 
@@ -144,7 +144,7 @@ LLTSCode LLTransferSourceAsset::dataCallback(const S32 packet_id,
             delete[] tmpp;
             *data_handle = NULL;
             returned_bytes = 0;
-            delete_returned = FALSE;
+            delete_returned = false;
         }
         return LLTS_DONE;
     }
@@ -164,7 +164,7 @@ void LLTransferSourceAsset::packParams(LLDataPacker& dp) const
     mParams.packParams(dp);
 }
 
-BOOL LLTransferSourceAsset::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceAsset::unpackParams(LLDataPacker &dp)
 {
     //LL_INFOS() << "LLTransferSourceAsset::unpackParams" << LL_ENDL;
     return mParams.unpackParams(dp);
@@ -194,7 +194,7 @@ void LLTransferSourceAsset::responderCallback(const LLUUID& uuid, LLAssetType::E
 
     LLTSCode status;
 
-    tsap->mGotResponse = TRUE;
+    tsap->mGotResponse = true;
     if (LL_ERR_NOERR == result)
     {
         // Everything's OK.
@@ -240,7 +240,7 @@ void LLTransferSourceParamsAsset::packParams(LLDataPacker &dp) const
 }
 
 
-BOOL LLTransferSourceParamsAsset::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceParamsAsset::unpackParams(LLDataPacker &dp)
 {
     S32 tmp_at;
 
@@ -249,6 +249,6 @@ BOOL LLTransferSourceParamsAsset::unpackParams(LLDataPacker &dp)
 
     mAssetType = (LLAssetType::EType)tmp_at;
 
-    return TRUE;
+    return true;
 }
 
diff --git a/indra/llmessage/lltransfersourceasset.h b/indra/llmessage/lltransfersourceasset.h
index f241a1e4a1..6c4c39011a 100644
--- a/indra/llmessage/lltransfersourceasset.h
+++ b/indra/llmessage/lltransfersourceasset.h
@@ -38,7 +38,7 @@ public:
     LLTransferSourceParamsAsset();
     virtual ~LLTransferSourceParamsAsset() {}
     /*virtual*/ void packParams(LLDataPacker &dp) const;
-    /*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+    /*virtual*/ bool unpackParams(LLDataPacker &dp);
 
     void setAsset(const LLUUID &asset_id, const LLAssetType::EType asset_type);
 
@@ -65,15 +65,15 @@ protected:
                                       const S32 max_bytes,
                                       U8 **datap,
                                       S32 &returned_bytes,
-                                      BOOL &delete_returned);
+                                      bool &delete_returned);
     /*virtual*/ void completionCallback(const LLTSCode status);
 
     virtual void packParams(LLDataPacker& dp) const;
-    /*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+    /*virtual*/ bool unpackParams(LLDataPacker &dp);
 
 protected:
     LLTransferSourceParamsAsset mParams;
-    BOOL mGotResponse;
+    bool mGotResponse;
 
     S32 mCurPos;
 };
diff --git a/indra/llmessage/lltransfersourcefile.cpp b/indra/llmessage/lltransfersourcefile.cpp
index ee0f176b9d..77a6c466c7 100644
--- a/indra/llmessage/lltransfersourcefile.cpp
+++ b/indra/llmessage/lltransfersourcefile.cpp
@@ -86,7 +86,7 @@ LLTSCode LLTransferSourceFile::dataCallback(const S32 packet_id,
                                             const S32 max_bytes,
                                             U8 **data_handle,
                                             S32 &returned_bytes,
-                                            BOOL &delete_returned)
+                                            bool &delete_returned)
 {
     //LL_INFOS() << "LLTransferSourceFile::dataCallback" << LL_ENDL;
 
@@ -102,7 +102,7 @@ LLTSCode LLTransferSourceFile::dataCallback(const S32 packet_id,
     }
 
     // Grab up until the max number of bytes from the file.
-    delete_returned = TRUE;
+    delete_returned = true;
     U8 *tmpp = new U8[max_bytes];
     *data_handle = tmpp;
     returned_bytes = (S32)fread(tmpp, 1, max_bytes, mFP);
@@ -111,7 +111,7 @@ LLTSCode LLTransferSourceFile::dataCallback(const S32 packet_id,
         delete[] tmpp;
         *data_handle = NULL;
         returned_bytes = 0;
-        delete_returned = FALSE;
+        delete_returned = false;
         return LLTS_DONE;
     }
 
@@ -141,7 +141,7 @@ void LLTransferSourceFile::packParams(LLDataPacker& dp) const
     mParams.packParams(dp);
 }
 
-BOOL LLTransferSourceFile::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceFile::unpackParams(LLDataPacker &dp)
 {
     //LL_INFOS() << "LLTransferSourceFile::unpackParams" << LL_ENDL;
     return mParams.unpackParams(dp);
@@ -150,7 +150,7 @@ BOOL LLTransferSourceFile::unpackParams(LLDataPacker &dp)
 
 LLTransferSourceParamsFile::LLTransferSourceParamsFile() :
     LLTransferSourceParams(LLTST_FILE),
-    mDeleteOnCompletion(FALSE)
+    mDeleteOnCompletion(false)
 {
 }
 
@@ -162,7 +162,7 @@ void LLTransferSourceParamsFile::packParams(LLDataPacker &dp) const
 }
 
 
-BOOL LLTransferSourceParamsFile::unpackParams(LLDataPacker &dp)
+bool LLTransferSourceParamsFile::unpackParams(LLDataPacker &dp)
 {
     dp.unpackString(mFilename, "Filename");
     U8 delete_flag;
@@ -170,5 +170,5 @@ BOOL LLTransferSourceParamsFile::unpackParams(LLDataPacker &dp)
     mDeleteOnCompletion = delete_flag;
 
     LL_INFOS() << "Unpacked filename: " << mFilename << LL_ENDL;
-    return TRUE;
+    return true;
 }
diff --git a/indra/llmessage/lltransfersourcefile.h b/indra/llmessage/lltransfersourcefile.h
index a84e5066e3..a447ab091b 100644
--- a/indra/llmessage/lltransfersourcefile.h
+++ b/indra/llmessage/lltransfersourcefile.h
@@ -35,17 +35,17 @@ public:
     LLTransferSourceParamsFile();
     virtual ~LLTransferSourceParamsFile() {}
     /*virtual*/ void packParams(LLDataPacker &dp) const;
-    /*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+    /*virtual*/ bool unpackParams(LLDataPacker &dp);
 
     void setFilename(const std::string &filename)       { mFilename = filename; }
     std::string getFilename() const                 { return mFilename; }
 
-    void setDeleteOnCompletion(BOOL enabled)        { mDeleteOnCompletion = enabled; }
-    BOOL getDeleteOnCompletion()                    { return mDeleteOnCompletion; }
+    void setDeleteOnCompletion(bool enabled)        { mDeleteOnCompletion = enabled; }
+    bool getDeleteOnCompletion()                    { return mDeleteOnCompletion; }
 protected:
     std::string mFilename;
     // ONLY DELETE THINGS OFF THE SIM IF THE FILENAME BEGINS IN 'TEMP'
-    BOOL mDeleteOnCompletion;
+    bool mDeleteOnCompletion;
 };
 
 class LLTransferSourceFile : public LLTransferSource
@@ -61,11 +61,11 @@ protected:
                                       const S32 max_bytes,
                                       U8 **datap,
                                       S32 &returned_bytes,
-                                      BOOL &delete_returned);
+                                      bool &delete_returned);
     /*virtual*/ void completionCallback(const LLTSCode status);
 
     virtual void packParams(LLDataPacker& dp) const;
-    /*virtual*/ BOOL unpackParams(LLDataPacker &dp);
+    /*virtual*/ bool unpackParams(LLDataPacker &dp);
 
 protected:
     LLTransferSourceParamsFile mParams;
diff --git a/indra/llmessage/lltransfertargetvfile.cpp b/indra/llmessage/lltransfertargetvfile.cpp
index 53962b6633..fcf853845b 100644
--- a/indra/llmessage/lltransfertargetvfile.cpp
+++ b/indra/llmessage/lltransfertargetvfile.cpp
@@ -94,7 +94,7 @@ LLTransferTargetVFile::LLTransferTargetVFile(
     const LLUUID& uuid,
     LLTransferSourceType src_type) :
     LLTransferTarget(LLTTT_VFILE, uuid, src_type),
-    mNeedsCreate(TRUE)
+    mNeedsCreate(true)
 {
     mTempID.generate();
 }
@@ -141,7 +141,7 @@ LLTSCode LLTransferTargetVFile::dataCallback(const S32 packet_id, U8 *in_datap,
     LLFileSystem vf(mTempID, mParams.getAssetType(), LLFileSystem::APPEND);
     if (mNeedsCreate)
     {
-        mNeedsCreate = FALSE;
+        mNeedsCreate = false;
     }
 
     if (!in_size)
diff --git a/indra/llmessage/lltransfertargetvfile.h b/indra/llmessage/lltransfertargetvfile.h
index 83cfd5fc5d..4a78c3c522 100644
--- a/indra/llmessage/lltransfertargetvfile.h
+++ b/indra/llmessage/lltransfertargetvfile.h
@@ -86,7 +86,7 @@ protected:
 
     LLTransferTargetParamsVFile mParams;
 
-    BOOL mNeedsCreate;
+    bool mNeedsCreate;
     LLUUID mTempID;
 };
 
diff --git a/indra/llmessage/lluseroperation.cpp b/indra/llmessage/lluseroperation.cpp
index c7c9ccd3bd..36ab87086d 100644
--- a/indra/llmessage/lluseroperation.cpp
+++ b/indra/llmessage/lluseroperation.cpp
@@ -41,7 +41,7 @@ LLUserOperationMgr* gUserOperationMgr = NULL;
 LLUserOperation::LLUserOperation(const LLUUID& agent_id)
 :   mAgentID(agent_id),
     mTimer(),
-    mNoExpire(FALSE)
+    mNoExpire(false)
 {
     mTransactionID.generate();
 }
@@ -51,7 +51,7 @@ LLUserOperation::LLUserOperation(const LLUUID& agent_id,
     mAgentID(agent_id),
     mTransactionID(transaction_id),
     mTimer(),
-    mNoExpire(FALSE)
+    mNoExpire(false)
 {
 }
 
@@ -59,7 +59,7 @@ LLUserOperation::LLUserOperation(const LLUUID& agent_id,
 // transaction, agent, et. after construction.
 LLUserOperation::LLUserOperation() :
     mTimer(),
-    mNoExpire(FALSE)
+    mNoExpire(false)
 {
 }
 
@@ -67,19 +67,19 @@ LLUserOperation::~LLUserOperation()
 {
 }
 
-void LLUserOperation::SetNoExpireFlag(const BOOL flag)
+void LLUserOperation::SetNoExpireFlag(const bool flag)
 {
     mNoExpire = flag;
 }
 
-BOOL LLUserOperation::isExpired()
+bool LLUserOperation::isExpired()
 {
     if (!mNoExpire)
     {
         const F32 EXPIRE_TIME_SECS = 10.f;
         return mTimer.getElapsedTimeF32() > EXPIRE_TIME_SECS;
     }
-    return FALSE;
+    return false;
 }
 
 void LLUserOperation::expire()
@@ -128,7 +128,7 @@ LLUserOperation* LLUserOperationMgr::findOperation(const LLUUID& tid)
 }
 
 
-BOOL LLUserOperationMgr::deleteOperation(LLUserOperation* op)
+bool LLUserOperationMgr::deleteOperation(LLUserOperation* op)
 {
     size_t rv = 0;
     if(op)
@@ -138,7 +138,7 @@ BOOL LLUserOperationMgr::deleteOperation(LLUserOperation* op)
         delete op;
         op = NULL;
     }
-    return rv ? TRUE : FALSE;
+    return rv != 0;
 }
 
 void LLUserOperationMgr::deleteExpiredOperations()
diff --git a/indra/llmessage/lluseroperation.h b/indra/llmessage/lluseroperation.h
index 953e36d7c0..c3ac2e350c 100644
--- a/indra/llmessage/lluseroperation.h
+++ b/indra/llmessage/lluseroperation.h
@@ -44,17 +44,17 @@ public:
     const LLUUID& getAgentID() const { return mAgentID; }
 
     // Operation never got necessary data, so expired
-    virtual BOOL isExpired();
+    virtual bool isExpired();
 
     // ability to mark this operation as never expiring.
-    void SetNoExpireFlag(const BOOL flag);
+    void SetNoExpireFlag(const bool flag);
 
     // Send request to the dataserver
     virtual void sendRequest() = 0;
 
     // Run the operation. This will only be called in the case of an
     // actual success or failure of the operation.
-    virtual BOOL execute(BOOL transaction_success) = 0;
+    virtual bool execute(bool transaction_success) = 0;
 
     // This method is called when the user op has expired, and is
     // about to be deleted by the manager. This gives the user op the
@@ -68,7 +68,7 @@ protected:
     LLUUID mAgentID;
     LLUUID mTransactionID;
     LLFrameTimer mTimer;
-    BOOL   mNoExpire;           // this is used for operations that expect an answer and will wait till it gets one.
+    bool   mNoExpire;           // this is used for operations that expect an answer and will wait till it gets one.
 };
 
 
@@ -80,7 +80,7 @@ public:
 
     void addOperation(LLUserOperation* op);
     LLUserOperation* findOperation(const LLUUID& transaction_id);
-    BOOL deleteOperation(LLUserOperation* op);
+    bool deleteOperation(LLUserOperation* op);
 
     // Call this method every once in a while to clean up old
     // transactions.
diff --git a/indra/llmessage/llxfer.cpp b/indra/llmessage/llxfer.cpp
index ea2309fbba..358c8be671 100644
--- a/indra/llmessage/llxfer.cpp
+++ b/indra/llmessage/llxfer.cpp
@@ -63,13 +63,13 @@ void LLXfer::init (S32 chunk_size)
     mXferSize = 0;
 
     mStatus = e_LL_XFER_UNINITIALIZED;
-    mWaitingForACK = FALSE;
+    mWaitingForACK = false;
 
     mCallback = NULL;
     mCallbackDataHandle = NULL;
     mCallbackResult = 0;
 
-    mBufferContainsEOF = FALSE;
+    mBufferContainsEOF = false;
     mBuffer = NULL;
     mBufferLength = 0;
     mBufferStartOffset = 0;
@@ -187,7 +187,7 @@ void LLXfer::sendPacket(S32 packet_num)
 {
     char fdata_buf[LL_XFER_LARGE_PAYLOAD+4];        /* Flawfinder: ignore */
     S32 fdata_size = mChunkSize;
-    BOOL last_packet = FALSE;
+    bool last_packet = false;
     S32 num_copy = 0;
 
     // if the desired packet is not in our current buffered excerpt from the file. . .
@@ -217,7 +217,7 @@ void LLXfer::sendPacket(S32 packet_num)
 
     if (((U32)(desired_read_position + fdata_size) >= (U32)mBufferLength) && (mBufferContainsEOF))
     {
-        last_packet = TRUE;
+        last_packet = true;
     }
 
     if (packet_num)
@@ -270,7 +270,7 @@ void LLXfer::sendPacket(S32 packet_num)
         }
 
         ACKTimer.reset();
-        mWaitingForACK = TRUE;
+        mWaitingForACK = true;
     }
     if (last_packet)
     {
@@ -327,7 +327,7 @@ S32 LLXfer::processEOF()
 
 ///////////////////////////////////////////////////////////
 
-S32 LLXfer::encodePacketNum(S32 packet_num, BOOL is_EOF)
+S32 LLXfer::encodePacketNum(S32 packet_num, bool is_EOF)
 {
     if (is_EOF)
     {
diff --git a/indra/llmessage/llxfer.h b/indra/llmessage/llxfer.h
index 2f880381d5..9a0901a84a 100644
--- a/indra/llmessage/llxfer.h
+++ b/indra/llmessage/llxfer.h
@@ -63,11 +63,11 @@ class LLXfer
     char *mBuffer;
     U32 mBufferLength;          // Size of valid data, not actual allocated buffer size
     U32 mBufferStartOffset;
-    BOOL mBufferContainsEOF;
+    bool mBufferContainsEOF;
 
     ELLXferStatus mStatus;
 
-    BOOL mWaitingForACK;
+    bool mWaitingForACK;
 
     void (*mCallback)(void **,S32,LLExtStat);
     void **mCallbackDataHandle;
@@ -103,7 +103,7 @@ class LLXfer
     virtual S32 suck(S32 start_position);
     virtual S32 flush();
 
-    virtual S32 encodePacketNum(S32 packet_num, BOOL is_eof);
+    virtual S32 encodePacketNum(S32 packet_num, bool is_eof);
     virtual void setXferSize (S32 data_size);
     virtual S32  getMaxBufferSize();
 
diff --git a/indra/llmessage/llxfer_file.cpp b/indra/llmessage/llxfer_file.cpp
index bdd7e35fd5..71b910297b 100644
--- a/indra/llmessage/llxfer_file.cpp
+++ b/indra/llmessage/llxfer_file.cpp
@@ -49,10 +49,10 @@ S32 copy_file(const std::string& from, const std::string& to);
 LLXfer_File::LLXfer_File (S32 chunk_size)
 : LLXfer(chunk_size)
 {
-    init(LLStringUtil::null, FALSE, chunk_size);
+    init(LLStringUtil::null, false, chunk_size);
 }
 
-LLXfer_File::LLXfer_File (const std::string& local_filename, BOOL delete_local_on_completion, S32 chunk_size)
+LLXfer_File::LLXfer_File (const std::string& local_filename, bool delete_local_on_completion, S32 chunk_size)
 : LLXfer(chunk_size)
 {
     init(local_filename, delete_local_on_completion, chunk_size);
@@ -67,7 +67,7 @@ LLXfer_File::~LLXfer_File ()
 
 ///////////////////////////////////////////////////////////
 
-void LLXfer_File::init (const std::string& local_filename, BOOL delete_local_on_completion, S32 chunk_size)
+void LLXfer_File::init (const std::string& local_filename, bool delete_local_on_completion, S32 chunk_size)
 {
 
     mFp = NULL;
@@ -75,8 +75,8 @@ void LLXfer_File::init (const std::string& local_filename, BOOL delete_local_on_
     mRemoteFilename.clear();
     mRemotePath = LL_PATH_NONE;
     mTempFilename.clear();
-    mDeleteLocalOnCompletion = FALSE;
-    mDeleteRemoteOnCompletion = FALSE;
+    mDeleteLocalOnCompletion = false;
+    mDeleteRemoteOnCompletion = false;
 
     if (!local_filename.empty())
     {
@@ -120,7 +120,7 @@ S32 LLXfer_File::initializeRequest(U64 xfer_id,
                    const std::string& remote_filename,
                    ELLPath remote_path,
                    const LLHost& remote_host,
-                   BOOL delete_remote_on_completion,
+                   bool delete_remote_on_completion,
                    void (*callback)(void**,S32,LLExtStat),
                    void** user_data)
 {
@@ -174,7 +174,7 @@ S32 LLXfer_File::startDownload()
         gMessageSystem->addStringFast(_PREHASH_Filename, mRemoteFilename);
         gMessageSystem->addU8("FilePath", (U8) mRemotePath);
         gMessageSystem->addBOOL("DeleteOnCompletion", mDeleteRemoteOnCompletion);
-        gMessageSystem->addBOOL("UseBigPackets", BOOL(mChunkSize == LL_XFER_LARGE_PAYLOAD));
+        gMessageSystem->addBOOL("UseBigPackets", mChunkSize == LL_XFER_LARGE_PAYLOAD);
         gMessageSystem->addUUIDFast(_PREHASH_VFileID, LLUUID::null);
         gMessageSystem->addS16Fast(_PREHASH_VFileType, -1);
 
@@ -287,11 +287,11 @@ S32 LLXfer_File::suck(S32 start_position)
 
         if (feof(mFp))
         {
-            mBufferContainsEOF = TRUE;
+            mBufferContainsEOF = true;
         }
         else
         {
-            mBufferContainsEOF = FALSE;
+            mBufferContainsEOF = false;
         }
     }
     else
@@ -317,7 +317,7 @@ S32 LLXfer_File::flush()
 
         if (mFp)
         {
-            S32 write_size = fwrite(mBuffer,1,mBufferLength,mFp);
+            S32 write_size = static_cast<S32>(fwrite(mBuffer,1,mBufferLength,mFp));
             if (write_size != mBufferLength)
             {
                 LL_WARNS("Xfer") << "Non-matching write size, requested " << mBufferLength
@@ -412,14 +412,14 @@ S32 LLXfer_File::processEOF()
 
 ///////////////////////////////////////////////////////////
 
-BOOL LLXfer_File::matchesLocalFilename(const std::string& filename)
+bool LLXfer_File::matchesLocalFilename(const std::string& filename)
 {
     return (filename == mLocalFilename);
 }
 
 ///////////////////////////////////////////////////////////
 
-BOOL LLXfer_File::matchesRemoteFilename(const std::string& filename, ELLPath remote_path)
+bool LLXfer_File::matchesRemoteFilename(const std::string& filename, ELLPath remote_path)
 {
     return ((filename == mRemoteFilename) && (remote_path == mRemotePath));
 }
diff --git a/indra/llmessage/llxfer_file.h b/indra/llmessage/llxfer_file.h
index cb2da47e44..f30ef3eed6 100644
--- a/indra/llmessage/llxfer_file.h
+++ b/indra/llmessage/llxfer_file.h
@@ -39,15 +39,15 @@ class LLXfer_File : public LLXfer
     ELLPath mRemotePath;
     std::string mTempFilename;
 
-    BOOL mDeleteLocalOnCompletion;
-    BOOL mDeleteRemoteOnCompletion;
+    bool mDeleteLocalOnCompletion;
+    bool mDeleteRemoteOnCompletion;
 
  public:
     LLXfer_File (S32 chunk_size);
-    LLXfer_File (const std::string& local_filename, BOOL delete_local_on_completion, S32 chunk_size);
+    LLXfer_File (const std::string& local_filename, bool delete_local_on_completion, S32 chunk_size);
     virtual ~LLXfer_File();
 
-    virtual void init(const std::string& local_filename, BOOL delete_local_on_completion, S32 chunk_size);
+    virtual void init(const std::string& local_filename, bool delete_local_on_completion, S32 chunk_size);
     virtual void cleanup();
 
     virtual S32 initializeRequest(U64 xfer_id,
@@ -55,7 +55,7 @@ class LLXfer_File : public LLXfer
                                   const std::string& remote_filename,
                                   ELLPath remote_path,
                                   const LLHost& remote_host,
-                                  BOOL delete_remote_on_completion,
+                                  bool delete_remote_on_completion,
                                   void (*callback)(void**,S32,LLExtStat),
                                   void** user_data);
     virtual S32 startDownload();
@@ -69,8 +69,8 @@ class LLXfer_File : public LLXfer
     virtual S32 suck(S32 start_position);
     virtual S32 flush();
 
-    virtual BOOL matchesLocalFilename(const std::string& filename);
-    virtual BOOL matchesRemoteFilename(const std::string& filename, ELLPath remote_path);
+    virtual bool matchesLocalFilename(const std::string& filename);
+    virtual bool matchesRemoteFilename(const std::string& filename, ELLPath remote_path);
 
     virtual S32  getMaxBufferSize();
 
diff --git a/indra/llmessage/llxfer_mem.cpp b/indra/llmessage/llxfer_mem.cpp
index 100a67e422..b619974270 100644
--- a/indra/llmessage/llxfer_mem.cpp
+++ b/indra/llmessage/llxfer_mem.cpp
@@ -52,7 +52,7 @@ void LLXfer_Mem::init ()
 {
     mRemoteFilename.clear();
     mRemotePath = LL_PATH_NONE;
-    mDeleteRemoteOnCompletion = FALSE;
+    mDeleteRemoteOnCompletion = false;
 }
 
 ///////////////////////////////////////////////////////////
@@ -73,7 +73,7 @@ void LLXfer_Mem::setXferSize (S32 xfer_size)
 
     mBufferLength = 0;
     mBufferStartOffset = 0;
-    mBufferContainsEOF = TRUE;
+    mBufferContainsEOF = true;
 
 //  cout << "starting transfer of size: " << xfer_size << endl;
 }
@@ -124,7 +124,7 @@ S32 LLXfer_Mem::initializeRequest(U64 xfer_id,
                                   const std::string& remote_filename,
                                   ELLPath remote_path,
                                   const LLHost& remote_host,
-                                  BOOL delete_remote_on_completion,
+                                  bool delete_remote_on_completion,
                                   void (*callback)(void*,S32,void**,S32,LLExtStat),
                                   void** user_data)
 {
@@ -164,7 +164,7 @@ S32 LLXfer_Mem::startDownload()
     gMessageSystem->addStringFast(_PREHASH_Filename, mRemoteFilename);
     gMessageSystem->addU8("FilePath", (U8) mRemotePath);
     gMessageSystem->addBOOL("DeleteOnCompletion", mDeleteRemoteOnCompletion);
-    gMessageSystem->addBOOL("UseBigPackets", BOOL(mChunkSize == LL_XFER_LARGE_PAYLOAD));
+    gMessageSystem->addBOOL("UseBigPackets", mChunkSize == LL_XFER_LARGE_PAYLOAD);
     gMessageSystem->addUUIDFast(_PREHASH_VFileID, LLUUID::null);
     gMessageSystem->addS16Fast(_PREHASH_VFileType, -1);
 
diff --git a/indra/llmessage/llxfer_mem.h b/indra/llmessage/llxfer_mem.h
index ef8e9e2483..4e87b0ca5a 100644
--- a/indra/llmessage/llxfer_mem.h
+++ b/indra/llmessage/llxfer_mem.h
@@ -39,7 +39,7 @@ class LLXfer_Mem : public LLXfer
     void (*mCallback)(void *, S32, void **, S32, LLExtStat);
     std::string mRemoteFilename;
     ELLPath mRemotePath;
-    BOOL mDeleteRemoteOnCompletion;
+    bool mDeleteRemoteOnCompletion;
 
  public:
 
@@ -59,7 +59,7 @@ class LLXfer_Mem : public LLXfer
                                   const std::string& remote_filename,
                                   ELLPath remote_path,
                                   const LLHost& remote_host,
-                                  BOOL delete_remote_on_completion,
+                                  bool delete_remote_on_completion,
                                   void (*callback)(void*,S32,void**,S32,LLExtStat),
                                   void** user_data);
     virtual S32 startDownload();
diff --git a/indra/llmessage/llxfer_vfile.cpp b/indra/llmessage/llxfer_vfile.cpp
index fbe880d05d..4f31973f3d 100644
--- a/indra/llmessage/llxfer_vfile.cpp
+++ b/indra/llmessage/llxfer_vfile.cpp
@@ -138,7 +138,7 @@ S32 LLXfer_VFile::initializeRequest(U64 xfer_id,
     mBufferLength = 0;
     mPacketNum = 0;
     mTempID.generate();
-    mDeleteTempFile = TRUE;
+    mDeleteTempFile = true;
     mStatus = e_LL_XFER_PENDING;
     return retval;
 }
@@ -156,8 +156,8 @@ S32 LLXfer_VFile::startDownload()
     gMessageSystem->addU64Fast(_PREHASH_ID, mID);
     gMessageSystem->addStringFast(_PREHASH_Filename, "");
     gMessageSystem->addU8("FilePath", (U8) LL_PATH_NONE);
-    gMessageSystem->addBOOL("DeleteOnCompletion", FALSE);
-    gMessageSystem->addBOOL("UseBigPackets", BOOL(mChunkSize == LL_XFER_LARGE_PAYLOAD));
+    gMessageSystem->addBOOL("DeleteOnCompletion", false);
+    gMessageSystem->addBOOL("UseBigPackets", mChunkSize == LL_XFER_LARGE_PAYLOAD);
     gMessageSystem->addUUIDFast(_PREHASH_VFileID, mRemoteID);
     gMessageSystem->addS16Fast(_PREHASH_VFileType, (S16)mType);
 
@@ -345,7 +345,7 @@ S32 LLXfer_VFile::processEOF()
             {
                 // Rename worked: the original file is gone.   Clear mDeleteTempFile
                 // so we don't attempt to delete the file in cleanup()
-                mDeleteTempFile = FALSE;
+                mDeleteTempFile = false;
             }
         }
         else
@@ -367,14 +367,14 @@ S32 LLXfer_VFile::processEOF()
 
 ////////////////////////////////////////////////////////////
 
-BOOL LLXfer_VFile::matchesLocalFile(const LLUUID &id, LLAssetType::EType type)
+bool LLXfer_VFile::matchesLocalFile(const LLUUID &id, LLAssetType::EType type)
 {
     return (id == mLocalID && type == mType);
 }
 
 //////////////////////////////////////////////////////////
 
-BOOL LLXfer_VFile::matchesRemoteFile(const LLUUID &id, LLAssetType::EType type)
+bool LLXfer_VFile::matchesRemoteFile(const LLUUID &id, LLAssetType::EType type)
 {
     return (id == mRemoteID && type == mType);
 }
diff --git a/indra/llmessage/llxfer_vfile.h b/indra/llmessage/llxfer_vfile.h
index 5ab767b052..f62da815f8 100644
--- a/indra/llmessage/llxfer_vfile.h
+++ b/indra/llmessage/llxfer_vfile.h
@@ -44,7 +44,7 @@ class LLXfer_VFile : public LLXfer
 
     std::string mName;
 
-    BOOL    mDeleteTempFile;
+    bool    mDeleteTempFile;
 
  public:
     LLXfer_VFile ();
@@ -72,8 +72,8 @@ class LLXfer_VFile : public LLXfer
     virtual S32 suck(S32 start_position);
     virtual S32 flush();
 
-    virtual BOOL matchesLocalFile(const LLUUID &id, LLAssetType::EType type);
-    virtual BOOL matchesRemoteFile(const LLUUID &id, LLAssetType::EType type);
+    virtual bool matchesLocalFile(const LLUUID &id, LLAssetType::EType type);
+    virtual bool matchesRemoteFile(const LLUUID &id, LLAssetType::EType type);
 
     virtual void setXferSize(S32 xfer_size);
     virtual S32  getMaxBufferSize();
diff --git a/indra/llmessage/llxfermanager.cpp b/indra/llmessage/llxfermanager.cpp
index ea1fe0a963..f6ed43a4e4 100644
--- a/indra/llmessage/llxfermanager.cpp
+++ b/indra/llmessage/llxfermanager.cpp
@@ -79,7 +79,7 @@ void LLXferManager::init()
     setMaxIncomingXfers(LL_DEFAULT_MAX_REQUEST_FIFO_XFERS);
 
     // Turn on or off ack throttling
-    mUseAckThrottling = FALSE;
+    mUseAckThrottling = false;
     setAckThrottleBPS(100000);
 }
 
@@ -116,7 +116,7 @@ void LLXferManager::setHardLimitOutgoingXfersPerCircuit(S32 max_num)
     mHardLimitOutgoingXfersPerCircuit = max_num;
 }
 
-void LLXferManager::setUseAckThrottling(const BOOL use)
+void LLXferManager::setUseAckThrottling(const bool use)
 {
     mUseAckThrottling = use;
 }
@@ -367,7 +367,7 @@ U64 LLXferManager::getNextID ()
 
 ///////////////////////////////////////////////////////////
 
-S32 LLXferManager::encodePacketNum(S32 packet_num, BOOL is_EOF)
+S32 LLXferManager::encodePacketNum(S32 packet_num, bool is_EOF)
 {
     if (is_EOF)
     {
@@ -385,7 +385,7 @@ S32 LLXferManager::decodePacketNum(S32 packet_num)
 
 ///////////////////////////////////////////////////////////
 
-BOOL LLXferManager::isLastPacket(S32 packet_num)
+bool LLXferManager::isLastPacket(S32 packet_num)
 {
     return(packet_num & 0x80000000);
 }
@@ -396,11 +396,11 @@ U64 LLXferManager::requestFile(const std::string& local_filename,
                                 const std::string& remote_filename,
                                 ELLPath remote_path,
                                 const LLHost& remote_host,
-                                BOOL delete_remote_on_completion,
+                                bool delete_remote_on_completion,
                                 void (*callback)(void**,S32,LLExtStat),
                                 void** user_data,
-                                BOOL is_priority,
-                                BOOL use_big_packets)
+                                bool is_priority,
+                                bool use_big_packets)
 {
     LLXfer_File* file_xfer_p = NULL;
 
@@ -464,7 +464,7 @@ void LLXferManager::requestVFile(const LLUUID& local_id,
                                  const LLHost& remote_host,
                                  void (*callback)(void**,S32,LLExtStat),
                                  void** user_data,
-                                 BOOL is_priority)
+                                 bool is_priority)
 {
     LLXfer_VFile * xfer_p = NULL;
 
@@ -757,7 +757,7 @@ void LLXferManager::processFileRequest (LLMessageSystem *mesgsys, void ** /*user
     LLUUID  uuid;
     LLAssetType::EType type;
     S16 type_s16;
-    BOOL b_use_big_packets;
+    bool b_use_big_packets;
 
     mesgsys->getBOOL("XferID", "UseBigPackets", b_use_big_packets);
 
@@ -853,7 +853,7 @@ void LLXferManager::processFileRequest (LLMessageSystem *mesgsys, void ** /*user
         }
         LL_INFOS("Xfer") << "starting file transfer: " <<  expanded_filename << " to " << mesgsys->getSender() << LL_ENDL;
 
-        BOOL delete_local_on_completion = FALSE;
+        bool delete_local_on_completion = false;
         mesgsys->getBOOL("XferID", "DeleteOnCompletion", delete_local_on_completion);
 
         // -1 chunk_size causes it to use the default
@@ -1005,7 +1005,7 @@ void LLXferManager::processConfirmation (LLMessageSystem *mesgsys, void ** /*use
     if (xferp)
     {
 //      cout << "confirmed packet #" << packetNum << " ping: "<< xferp->ACKTimer.getElapsedTimeF32() <<  endl;
-        xferp->mWaitingForACK = FALSE;
+        xferp->mWaitingForACK = false;
         if (xferp->mStatus == e_LL_XFER_IN_PROGRESS)
         {
             xferp->sendNextPacket();
@@ -1235,7 +1235,7 @@ void LLXferManager::startPendingDownloads()
 
 ///////////////////////////////////////////////////////////
 
-void LLXferManager::addToList(LLXfer* xferp, xfer_list_t & xfer_list, BOOL is_priority)
+void LLXferManager::addToList(LLXfer* xferp, xfer_list_t & xfer_list, bool is_priority)
 {
     if(is_priority)
     {
diff --git a/indra/llmessage/llxfermanager.h b/indra/llmessage/llxfermanager.h
index 3999b41862..3be5f5a228 100644
--- a/indra/llmessage/llxfermanager.h
+++ b/indra/llmessage/llxfermanager.h
@@ -76,7 +76,7 @@ class LLXferManager
     S32    mHardLimitOutgoingXfersPerCircuit;   // At this limit, kill off the connection
     S32    mMaxIncomingXfers;
 
-    BOOL    mUseAckThrottling; // Use ack throttling to cap file xfer bandwidth
+    bool    mUseAckThrottling; // Use ack throttling to cap file xfer bandwidth
     std::deque<LLXferAckInfo> mXferAckQueue;
     LLThrottle mAckThrottle;
  public:
@@ -85,8 +85,8 @@ class LLXferManager
     // an xfer must happen asap.
     enum
     {
-        LOW_PRIORITY = FALSE,
-        HIGH_PRIORITY = TRUE,
+        LOW_PRIORITY = false,
+        HIGH_PRIORITY = true,
     };
 
     // Linked FIFO list, add to the front and pull from back
@@ -100,7 +100,7 @@ class LLXferManager
  protected:
     // implementation methods
     virtual void startPendingDownloads();
-    virtual void addToList(LLXfer* xferp, xfer_list_t & xfer_list, BOOL is_priority);
+    virtual void addToList(LLXfer* xferp, xfer_list_t & xfer_list, bool is_priority);
     std::multiset<std::string> mExpectedTransfers; // files that are authorized to transfer out
     std::multiset<std::string> mExpectedRequests;  // files that are authorized to be downloaded on top of
     std::multiset<std::string> mExpectedVFileTransfers; // files that are authorized to transfer out
@@ -113,7 +113,7 @@ class LLXferManager
     virtual void init();
     virtual void cleanup();
 
-    void setUseAckThrottling(const BOOL use);
+    void setUseAckThrottling(const bool use);
     void setAckThrottleBPS(const F32 bps);
 
 // list management routines
@@ -135,9 +135,9 @@ class LLXferManager
 // general utility routines
     virtual void registerCallbacks(LLMessageSystem *mesgsys);
     virtual U64 getNextID ();
-    virtual S32 encodePacketNum(S32 packet_num, BOOL is_eof);
+    virtual S32 encodePacketNum(S32 packet_num, bool is_eof);
     virtual S32 decodePacketNum(S32 packet_num);
-    virtual BOOL isLastPacket(S32 packet_num);
+    virtual bool isLastPacket(S32 packet_num);
 
 // file requesting routines
 // .. to file
@@ -145,19 +145,19 @@ class LLXferManager
                              const std::string& remote_filename,
                              ELLPath remote_path,
                              const LLHost& remote_host,
-                             BOOL delete_remote_on_completion,
+                             bool delete_remote_on_completion,
                              void (*callback)(void**,S32,LLExtStat), void** user_data,
-                             BOOL is_priority = FALSE,
-                             BOOL use_big_packets = FALSE);
+                             bool is_priority = false,
+                             bool use_big_packets = false);
     /*
 // .. to memory
     virtual void requestFile(const std::string& remote_filename,
                              ELLPath remote_path,
                              const LLHost &remote_host,
-                             BOOL delete_remote_on_completion,
+                             bool delete_remote_on_completion,
                              void (*callback)(void*, S32, void**, S32, LLExtStat),
                              void** user_data,
-                             BOOL is_priority = FALSE);
+                             bool is_priority = false);
     */
 // vfile requesting
 // .. to vfile
@@ -165,7 +165,7 @@ class LLXferManager
                               LLAssetType::EType type,
                               const LLHost& remote_host,
                               void (*callback)(void**,S32,LLExtStat), void** user_data,
-                              BOOL is_priority = FALSE);
+                              bool is_priority = false);
     /**
         When arbitrary files are requested to be transfered (by giving a dir of LL_PATH_NONE)
        they must be "expected", but having something pre-authorize them. This pair of functions
diff --git a/indra/llmessage/llxorcipher.cpp b/indra/llmessage/llxorcipher.cpp
index dc92fb7f85..8db4fca629 100644
--- a/indra/llmessage/llxorcipher.cpp
+++ b/indra/llmessage/llxorcipher.cpp
@@ -109,7 +109,7 @@ void LLXORCipher::init(const U8* pad, U32 pad_len)
 
 #ifdef _DEBUG
 // static
-BOOL LLXORCipher::testHarness()
+bool LLXORCipher::testHarness()
 {
     const U32 PAD_LEN = 3;
     const U8 PAD[] = "abc";
@@ -122,7 +122,7 @@ BOOL LLXORCipher::testHarness()
     cipher.encrypt((U8*)MESSAGE, MSG_LENGTH, encrypted, MSG_LENGTH);
     cipher.decrypt(encrypted, MSG_LENGTH, decrypted, MSG_LENGTH);
 
-    if(0 != memcmp((void*)MESSAGE, decrypted, MSG_LENGTH)) return FALSE;
-    return TRUE;
+    if(0 != memcmp((void*)MESSAGE, decrypted, MSG_LENGTH)) return false;
+    return true;
 }
 #endif
diff --git a/indra/llmessage/llxorcipher.h b/indra/llmessage/llxorcipher.h
index fa1fb11b78..50ea997b4d 100644
--- a/indra/llmessage/llxorcipher.h
+++ b/indra/llmessage/llxorcipher.h
@@ -43,18 +43,18 @@ public:
     LLXORCipher& operator=(const LLXORCipher& cipher);
 
     // Cipher functions
-    /*virtual*/ U32 encrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len);
-    /*virtual*/ U32 decrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len);
-    /*virtual*/ U32 requiredEncryptionSpace(U32 src_len) const;
+    U32 encrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len) override;
+    U32 decrypt(const U8* src, U32 src_len, U8* dst, U32 dst_len) override;
+    U32 requiredEncryptionSpace(U32 src_len) const override;
 
     // special syntactic-sugar since xor can be performed in place.
-    BOOL encrypt(U8* buf, U32 len) { return encrypt((const U8*)buf, len, buf, len); }
-    BOOL decrypt(U8* buf, U32 len) { return decrypt((const U8*)buf, len, buf, len); }
+    bool encrypt(U8* buf, U32 len) { return encrypt((const U8*)buf, len, buf, len) > 0; }
+    bool decrypt(U8* buf, U32 len) { return decrypt((const U8*)buf, len, buf, len) > 0; }
 
 #ifdef _DEBUG
     // This function runs tests to make sure the crc is
-    // working. Returns TRUE if it is.
-    static BOOL testHarness();
+    // working. Returns true if it is.
+    static bool testHarness();
 #endif
 
 protected:
diff --git a/indra/llmessage/machine.h b/indra/llmessage/machine.h
index 17cfd9771f..05d366cbc3 100644
--- a/indra/llmessage/machine.h
+++ b/indra/llmessage/machine.h
@@ -65,7 +65,7 @@ public:
     // The control port is the listen port of the parent process that
     // launched this machine. 0 means none or not known.
     const S32       &getControlPort()   const { return mControlPort; }
-    BOOL            isValid()           const { return (mHost.getPort() != 0); }    // TRUE if corresponds to functioning machine
+    bool            isValid()           const { return (mHost.getPort() != 0); }    // true if corresponds to functioning machine
 
     // set functions
     void            setMachineType(EMachineType machine_type)   { mMachineType = machine_type; }
diff --git a/indra/llmessage/message.cpp b/indra/llmessage/message.cpp
index 398b3ac757..cfa5178fc6 100644
--- a/indra/llmessage/message.cpp
+++ b/indra/llmessage/message.cpp
@@ -148,11 +148,11 @@ static const char* nullToEmpty(const char* s)
 void LLMessageSystem::init()
 {
     // initialize member variables
-    mVerboseLog = FALSE;
+    mVerboseLog = false;
 
-    mbError = FALSE;
+    mbError = false;
     mErrorCode = 0;
-    mSendReliable = FALSE;
+    mSendReliable = false;
 
     mUnackedListDepth = 0;
     mUnackedListSize = 0;
@@ -214,7 +214,7 @@ LLMessageSystem::LLMessageSystem(const std::string& filename, U32 port,
     mVersionFlags = 0x0;
 
     // default to not accepting packets from not alive circuits
-    mbProtected = TRUE;
+    mbProtected = true;
 
     // default to blocking trusted connections on a public interface if one is specified
     mBlockUntrustedInterface = true;
@@ -239,7 +239,7 @@ LLMessageSystem::LLMessageSystem(const std::string& filename, U32 port,
     S32 error = start_net(mSocket, mPort);
     if (error != 0)
     {
-        mbError = TRUE;
+        mbError = true;
         mErrorCode = error;
     }
 //  LL_DEBUGS("Messaging") <<  << "*** port: " << mPort << LL_ENDL;
@@ -288,7 +288,7 @@ void LLMessageSystem::loadTemplateFile(const std::string& filename, bool failure
     if(filename.empty())
     {
         LL_ERRS("Messaging") << "No template filename specified" << LL_ENDL;
-        mbError = TRUE;
+        mbError = true;
         return;
     }
 
@@ -300,19 +300,22 @@ void LLMessageSystem::loadTemplateFile(const std::string& filename, bool failure
         } else {
             LL_WARNS("Messaging") << "Failed to open template: " << filename << LL_ENDL;
         }
-        mbError = TRUE;
+        mbError = true;
         return;
     }
 
     LLTemplateTokenizer tokens(template_body);
     LLTemplateParser parsed(tokens);
     mMessageFileVersionNumber = parsed.getVersion();
+    S32 count                 = 0;
     for(LLTemplateParser::message_iterator iter = parsed.getMessagesBegin();
         iter != parsed.getMessagesEnd();
         iter++)
     {
         addTemplate(*iter);
+        count++;
     }
+    LL_INFOS("Messaging") << "Read " << count << " messages from " << filename << LL_ENDL;
 }
 
 
@@ -359,7 +362,7 @@ void LLMessageSystem::clearReceiveState()
 }
 
 
-BOOL LLMessageSystem::poll(F32 seconds)
+bool LLMessageSystem::poll(F32 seconds)
 {
     S32 num_socks;
     apr_status_t status;
@@ -370,11 +373,11 @@ BOOL LLMessageSystem::poll(F32 seconds)
     }
     if (num_socks)
     {
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -465,7 +468,7 @@ LLCircuitData* LLMessageSystem::findCircuit(const LLHost& host,
             else
             {
                 // wake up the circuit
-                cdp->setAlive(TRUE);
+                cdp->setAlive(true);
 
                 if(resetPacketId)
                 {
@@ -478,13 +481,13 @@ LLCircuitData* LLMessageSystem::findCircuit(const LLHost& host,
     return cdp;
 }
 
-// Returns TRUE if a valid, on-circuit message has been received.
+// Returns true if a valid, on-circuit message has been received.
 // Requiring a non-const LockMessageChecker reference ensures that
 // mMessageReader has been set to mTemplateMessageReader.
-BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
+bool LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
 {
     // Pump
-    BOOL    valid_packet = FALSE;
+    bool    valid_packet = false;
 
     LLTransferTargetVFile::updateQueue();
 
@@ -503,8 +506,8 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
     {
         clearReceiveState();
 
-        BOOL recv_reliable = FALSE;
-        BOOL recv_resent = FALSE;
+        bool recv_reliable = false;
+        bool recv_resent = false;
         S32 acks = 0;
         S32 true_rcv_size = 0;
 
@@ -528,7 +531,7 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
                 callExceptionFunc(MX_PACKET_TOO_SHORT);
             }
             // no data in packet receive buffer
-            valid_packet = FALSE;
+            valid_packet = false;
         }
         else
         {
@@ -551,7 +554,7 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
                     LL_WARNS("Messaging") << "Malformed packet received. Packet size "
                         << receive_size << " with invalid no. of acks " << acks
                         << LL_ENDL;
-                    valid_packet = FALSE;
+                    valid_packet = false;
                     continue;
                 }
             }
@@ -590,11 +593,11 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
 
             if (buffer[0] & LL_RELIABLE_FLAG)
             {
-                recv_reliable = TRUE;
+                recv_reliable = true;
             }
             if (buffer[0] & LL_RESENT_FLAG)
             {
-                recv_resent = TRUE;
+                recv_resent = true;
                 if (cdp && cdp->isDuplicateResend(mCurrentRecvPacketID))
                 {
                     // We need to ACK here to suppress
@@ -632,7 +635,7 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
                         LL_INFOS("Messaging") << str.str() << LL_ENDL;
                     }
                     mPacketsIn++;
-                    valid_packet = FALSE;
+                    valid_packet = false;
                     continue;
                 }
             }
@@ -661,7 +664,7 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
             {
                 logMsgFromInvalidCircuit( host, recv_reliable );
                 clearReceiveState();
-                valid_packet = FALSE;
+                valid_packet = false;
             }
 
             if(
@@ -674,12 +677,12 @@ BOOL LLMessageSystem::checkMessages(LockMessageChecker&, S64 frame_count )
                 clearReceiveState();
 
                 sendDenyTrustedCircuit(host);
-                valid_packet = FALSE;
+                valid_packet = false;
             }
 
             if( valid_packet )
             {
-                logValidMsg(cdp, host, recv_reliable, recv_resent, (BOOL)(acks>0) );
+                logValidMsg(cdp, host, recv_reliable, recv_resent, acks>0 );
                 valid_packet = mTemplateMessageReader->readMessage(buffer, host);
             }
 
@@ -765,7 +768,7 @@ void LLMessageSystem::processAcks(LockMessageChecker&, F32 collect_time)
         }
     }
 
-    BOOL dump = FALSE;
+    bool dump = false;
     {
         // Check the status of circuits
         mCircuitInfo.updateWatchDogTimers(this);
@@ -790,17 +793,17 @@ void LLMessageSystem::processAcks(LockMessageChecker&, F32 collect_time)
         {
             if (mNumMessageCounts >= mMaxMessageCounts)
             {
-                dump = TRUE;
+                dump = true;
             }
         }
 
         if (mMaxMessageTime >= F32Seconds(0.f))
         {
             // This is one of the only places where we're required to get REAL message system time.
-            mReceiveTime = getMessageTimeSeconds(TRUE) - mMessageCountTime;
+            mReceiveTime = getMessageTimeSeconds(true) - mMessageCountTime;
             if (mReceiveTime > mMaxMessageTime)
             {
-                dump = TRUE;
+                dump = true;
             }
         }
     }
@@ -830,7 +833,7 @@ void LLMessageSystem::copyMessageReceivedToSend()
     {
         mMessageBuilder = mLLSDMessageBuilder;
     }
-    mSendReliable = FALSE;
+    mSendReliable = false;
     mMessageBuilder->newMessage(mMessageReader->getMessageName());
     mMessageReader->copyToBuilder(*mMessageBuilder);
 }
@@ -925,7 +928,7 @@ S32 LLMessageSystem::sendMessage(const LLHost &host, LLStoredMessagePtr message)
 
 void LLMessageSystem::clearMessage()
 {
-    mSendReliable = FALSE;
+    mSendReliable = false;
     mMessageBuilder->clearMessage();
 }
 
@@ -940,7 +943,7 @@ void LLMessageSystem::nextBlock(const char *blockname)
     nextBlockFast(LLMessageStringTable::getInstance()->getString(blockname));
 }
 
-BOOL LLMessageSystem::isSendFull(const char* blockname)
+bool LLMessageSystem::isSendFull(const char* blockname)
 {
     char* stringTableName = NULL;
     if(NULL != blockname)
@@ -950,22 +953,22 @@ BOOL LLMessageSystem::isSendFull(const char* blockname)
     return isSendFullFast(stringTableName);
 }
 
-BOOL LLMessageSystem::isSendFullFast(const char* blockname)
+bool LLMessageSystem::isSendFullFast(const char* blockname)
 {
     return mMessageBuilder->isMessageFull(blockname);
 }
 
 
-// blow away the last block of a message, return FALSE if that leaves no blocks or there wasn't a block to remove
+// blow away the last block of a message, return false if that leaves no blocks or there wasn't a block to remove
 // TODO: Babbage: Remove this horror.
-BOOL LLMessageSystem::removeLastBlock()
+bool LLMessageSystem::removeLastBlock()
 {
     return mMessageBuilder->removeLastBlock();
 }
 
 S32 LLMessageSystem::sendReliable(const LLHost &host)
 {
-    return sendReliable(host, LL_DEFAULT_RELIABLE_RETRIES, TRUE, LL_PING_BASED_TIMEOUT_DUMMY, NULL, NULL);
+    return sendReliable(host, LL_DEFAULT_RELIABLE_RETRIES, true, LL_PING_BASED_TIMEOUT_DUMMY, NULL, NULL);
 }
 
 
@@ -984,15 +987,15 @@ S32 LLMessageSystem::sendSemiReliable(const LLHost &host, void (*callback)(void
         timeout = LL_SEMIRELIABLE_TIMEOUT_FACTOR * LL_AVERAGED_PING_MAX;
     }
 
-    const S32 retries = 0;
-    const BOOL ping_based_timeout = FALSE;
+    constexpr S32 retries = 0;
+    constexpr bool ping_based_timeout = false;
     return sendReliable(host, retries, ping_based_timeout, timeout, callback, callback_data);
 }
 
 // send the message via a UDP packet
 S32 LLMessageSystem::sendReliable(  const LLHost &host,
                                     S32 retries,
-                                    BOOL ping_based_timeout,
+                                    bool ping_based_timeout,
                                     F32Seconds timeout,
                                     void (*callback)(void **,S32),
                                     void ** callback_data)
@@ -1010,7 +1013,7 @@ S32 LLMessageSystem::sendReliable(  const LLHost &host,
         }
     }
 
-    mSendReliable = TRUE;
+    mSendReliable = true;
     mReliablePacketParams.set(host, retries, ping_based_timeout, timeout,
         callback, callback_data,
         const_cast<char*>(mMessageBuilder->getMessageName()));
@@ -1037,7 +1040,7 @@ void LLMessageSystem::forwardReliable(const U32 circuit_code)
 
 S32 LLMessageSystem::forwardReliable(   const LLHost &host,
                                         S32 retries,
-                                        BOOL ping_based_timeout,
+                                        bool ping_based_timeout,
                                         F32Seconds timeout,
                                         void (*callback)(void **,S32),
                                         void ** callback_data)
@@ -1064,9 +1067,9 @@ S32 LLMessageSystem::flushSemiReliable(const LLHost &host, void (*callback)(void
     S32 send_bytes = 0;
     if (mMessageBuilder->getMessageSize())
     {
-        mSendReliable = TRUE;
+        mSendReliable = true;
         // No need for ping-based retry as not going to retry
-        mReliablePacketParams.set(host, 0, FALSE, timeout, callback,
+        mReliablePacketParams.set(host, 0, false, timeout, callback,
                                   callback_data,
                                   const_cast<char*>(mMessageBuilder->getMessageName()));
         send_bytes = sendMessage(host);
@@ -1166,7 +1169,7 @@ S32 LLMessageSystem::sendMessage(const LLHost &host)
             host.getUntrustedSimulatorCap(),
             mLLSDMessageBuilder->getMessageName(), message, cb));
 
-        mSendReliable = FALSE;
+        mSendReliable = false;
         mReliablePacketParams.clear();
         return 1;
     }
@@ -1215,7 +1218,7 @@ S32 LLMessageSystem::sendMessage(const LLHost &host)
     // tack packet acks onto the end of this message
     S32 space_left = (MTUBYTES - buffer_length) / sizeof(TPACKETID); // space left for packet ids
     S32 ack_count = (S32)cdp->mAcks.size();
-    BOOL is_ack_appended = FALSE;
+    bool is_ack_appended = false;
     std::vector<TPACKETID> acks;
     if((space_left > 0) && (ack_count > 0) &&
        (mMessageBuilder->getMessageName() != _PREHASH_PacketAck))
@@ -1266,10 +1269,10 @@ S32 LLMessageSystem::sendMessage(const LLHost &host)
         // tack the count in the final byte
         U8 count = (U8)append_ack_count;
         buf_ptr[buffer_length++] = count;
-        is_ack_appended = TRUE;
+        is_ack_appended = true;
     }
 
-    BOOL success;
+    bool success;
     success = mPacketRing.sendPacket(mSocket, (char *)buf_ptr, buffer_length, host);
 
     if (!success)
@@ -1304,12 +1307,12 @@ S32 LLMessageSystem::sendMessage(const LLHost &host)
     mPacketsOut++;
     mTotalBytesOut += buffer_length;
 
-    mSendReliable = FALSE;
+    mSendReliable = false;
     mReliablePacketParams.clear();
     return buffer_length;
 }
 
-void LLMessageSystem::logMsgFromInvalidCircuit( const LLHost& host, BOOL recv_reliable )
+void LLMessageSystem::logMsgFromInvalidCircuit( const LLHost& host, bool recv_reliable )
 {
     if(mVerboseLog)
     {
@@ -1336,7 +1339,7 @@ void LLMessageSystem::logMsgFromInvalidCircuit( const LLHost& host, BOOL recv_re
         // TODO: babbage: work out if we need these
         // mMessageCountList[mNumMessageCounts].mMessageNum = mCurrentRMessageTemplate->mMessageNumber;
         mMessageCountList[mNumMessageCounts].mMessageBytes = mMessageReader->getMessageSize();
-        mMessageCountList[mNumMessageCounts].mInvalid = TRUE;
+        mMessageCountList[mNumMessageCounts].mInvalid = true;
         mNumMessageCounts++;
     }
 }
@@ -1389,12 +1392,12 @@ void LLMessageSystem::logTrustedMsgFromUntrustedCircuit( const LLHost& host )
         //  = mCurrentRMessageTemplate->mMessageNumber;
         mMessageCountList[mNumMessageCounts].mMessageBytes
             = mMessageReader->getMessageSize();
-        mMessageCountList[mNumMessageCounts].mInvalid = TRUE;
+        mMessageCountList[mNumMessageCounts].mInvalid = true;
         mNumMessageCounts++;
     }
 }
 
-void LLMessageSystem::logValidMsg(LLCircuitData *cdp, const LLHost& host, BOOL recv_reliable, BOOL recv_resent, BOOL recv_acks )
+void LLMessageSystem::logValidMsg(LLCircuitData *cdp, const LLHost& host, bool recv_reliable, bool recv_resent, bool recv_acks )
 {
     if (mNumMessageCounts >= MAX_MESSAGE_COUNT_NUM)
     {
@@ -1405,7 +1408,7 @@ void LLMessageSystem::logValidMsg(LLCircuitData *cdp, const LLHost& host, BOOL r
         // TODO: babbage: work out if we need these
         //mMessageCountList[mNumMessageCounts].mMessageNum = mCurrentRMessageTemplate->mMessageNumber;
         mMessageCountList[mNumMessageCounts].mMessageBytes = mMessageReader->getMessageSize();
-        mMessageCountList[mNumMessageCounts].mInvalid = FALSE;
+        mMessageCountList[mNumMessageCounts].mInvalid = false;
         mNumMessageCounts++;
     }
 
@@ -1499,7 +1502,7 @@ void LLMessageSystem::getCircuitInfo(LLSD& info) const
 }
 
 // returns whether the given host is on a trusted circuit
-BOOL    LLMessageSystem::getCircuitTrust(const LLHost &host)
+bool    LLMessageSystem::getCircuitTrust(const LLHost &host)
 {
     LLCircuitData *cdp = mCircuitInfo.findCircuit(host);
     if (cdp)
@@ -1507,12 +1510,12 @@ BOOL    LLMessageSystem::getCircuitTrust(const LLHost &host)
         return cdp->getTrusted();
     }
 
-    return FALSE;
+    return false;
 }
 
-// Activate a circuit, and set its trust level (TRUE if trusted,
-// FALSE if not).
-void LLMessageSystem::enableCircuit(const LLHost &host, BOOL trusted)
+// Activate a circuit, and set its trust level (true if trusted,
+// false if not).
+void LLMessageSystem::enableCircuit(const LLHost &host, bool trusted)
 {
     LLCircuitData *cdp = mCircuitInfo.findCircuit(host);
     if (!cdp)
@@ -1521,7 +1524,7 @@ void LLMessageSystem::enableCircuit(const LLHost &host, BOOL trusted)
     }
     else
     {
-        cdp->setAlive(TRUE);
+        cdp->setAlive(true);
     }
     cdp->setTrusted(trusted);
 }
@@ -1573,7 +1576,7 @@ void LLMessageSystem::disableCircuit(const LLHost &host)
 }
 
 
-void LLMessageSystem::setCircuitAllowTimeout(const LLHost &host, BOOL allow)
+void LLMessageSystem::setCircuitAllowTimeout(const LLHost &host, bool allow)
 {
     LLCircuitData *cdp = mCircuitInfo.findCircuit(host);
     if (cdp)
@@ -1592,14 +1595,14 @@ void LLMessageSystem::setCircuitTimeoutCallback(const LLHost &host, void (*callb
 }
 
 
-BOOL LLMessageSystem::checkCircuitBlocked(const U32 circuit)
+bool LLMessageSystem::checkCircuitBlocked(const U32 circuit)
 {
     LLHost host = findHost(circuit);
 
     if (!host.isOk())
     {
         LL_DEBUGS("Messaging") << "checkCircuitBlocked: Unknown circuit " << circuit << LL_ENDL;
-        return TRUE;
+        return true;
     }
 
     LLCircuitData *cdp = mCircuitInfo.findCircuit(host);
@@ -1610,18 +1613,18 @@ BOOL LLMessageSystem::checkCircuitBlocked(const U32 circuit)
     else
     {
         LL_INFOS("Messaging") << "checkCircuitBlocked(circuit): Unknown host - " << host << LL_ENDL;
-        return FALSE;
+        return false;
     }
 }
 
-BOOL LLMessageSystem::checkCircuitAlive(const U32 circuit)
+bool LLMessageSystem::checkCircuitAlive(const U32 circuit)
 {
     LLHost host = findHost(circuit);
 
     if (!host.isOk())
     {
         LL_DEBUGS("Messaging") << "checkCircuitAlive: Unknown circuit " << circuit << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     LLCircuitData *cdp = mCircuitInfo.findCircuit(host);
@@ -1632,11 +1635,11 @@ BOOL LLMessageSystem::checkCircuitAlive(const U32 circuit)
     else
     {
         LL_INFOS("Messaging") << "checkCircuitAlive(circuit): Unknown host - " << host << LL_ENDL;
-        return FALSE;
+        return false;
     }
 }
 
-BOOL LLMessageSystem::checkCircuitAlive(const LLHost &host)
+bool LLMessageSystem::checkCircuitAlive(const LLHost &host)
 {
     LLCircuitData *cdp = mCircuitInfo.findCircuit(host);
     if (cdp)
@@ -1646,12 +1649,12 @@ BOOL LLMessageSystem::checkCircuitAlive(const LLHost &host)
     else
     {
         LL_DEBUGS("Messaging") << "checkCircuitAlive(host): Unknown host - " << host << LL_ENDL;
-        return FALSE;
+        return false;
     }
 }
 
 
-void LLMessageSystem::setCircuitProtection(BOOL b_protect)
+void LLMessageSystem::setCircuitProtection(bool b_protect)
 {
     mbProtected = b_protect;
 }
@@ -1779,7 +1782,7 @@ void    open_circuit(LLMessageSystem *msgsystem, void** /*user_data*/)
     msgsystem->getIPPortFast(_PREHASH_CircuitInfo, _PREHASH_Port, port);
 
     // By default, OpenCircuit's are untrusted
-    msgsystem->enableCircuit(LLHost(ip, port), FALSE);
+    msgsystem->enableCircuit(LLHost(ip, port), false);
 }
 
 void    close_circuit(LLMessageSystem *msgsystem, void** /*user_data*/)
@@ -1944,9 +1947,9 @@ void LLMessageSystem::processUseCircuitCode(LLMessageSystem* msg,
         // passed the circuit code and session id check, so we will go
         // ahead and persist the ID associated.
         LLCircuitData *cdp = msg->mCircuitInfo.findCircuit(msg->getSender());
-        BOOL had_circuit_already = cdp ? TRUE : FALSE;
+        bool had_circuit_already = cdp != nullptr;
 
-        msg->enableCircuit(msg->getSender(), FALSE);
+        msg->enableCircuit(msg->getSender(), false);
         cdp = msg->mCircuitInfo.findCircuit(msg->getSender());
         if(cdp)
         {
@@ -1970,7 +1973,7 @@ void LLMessageSystem::processUseCircuitCode(LLMessageSystem* msg,
             // doesn't get properly duplicate suppressed.  Not a BIG deal, but it's somewhat confusing
             // (and bad from a state point of view).  DJS 9/23/04
             //
-            cdp->checkPacketInID(gMessageSystem->mCurrentRecvPacketID, FALSE ); // Since this is the first message on the circuit, by definition it's not resent.
+            cdp->checkPacketInID(gMessageSystem->mCurrentRecvPacketID, false ); // Since this is the first message on the circuit, by definition it's not resent.
         }
 
         msg->mIPPortToCircuitCode[ip_port_in] = circuit_code_in;
@@ -2169,7 +2172,7 @@ S32 LLMessageSystem::sendError(
     if (LLMessageConfig::getMessageFlavor(ERROR_MESSAGE_NAME) ==
         LLMessageConfig::TEMPLATE_FLAVOR)
     {
-        S32 msg_size = temp.size() + mMessageBuilder->getMessageSize();
+        S32 msg_size = static_cast<S32>(temp.size()) + mMessageBuilder->getMessageSize();
         if(msg_size >= ETHERNET_MTU_BYTES)
         {
             pack_data = false;
@@ -2177,7 +2180,7 @@ S32 LLMessageSystem::sendError(
     }
     if(pack_data)
     {
-        addBinaryData("Data", (void*)temp.c_str(), temp.size());
+        addBinaryData("Data", (void*)temp.c_str(), static_cast<S32>(temp.size()));
     }
     else
     {
@@ -2288,7 +2291,7 @@ void process_create_trusted_circuit(LLMessageSystem *msg, void **)
     their_digest[MD5HEX_STR_SIZE - 1] = '\0';
     if(msg->isMatchingDigestForWindowAndUUIDs(their_digest, TRUST_TIME_WINDOW, local_id, remote_id))
     {
-        cdp->setTrusted(TRUE);
+        cdp->setTrusted(true);
         LL_INFOS("Messaging") << "Trusted digest from " << msg->getSender() << LL_ENDL;
         return;
     }
@@ -2457,13 +2460,13 @@ bool start_messaging_system(
     if (!gMessageSystem)
     {
         LL_ERRS("AppInit") << "Messaging system initialization failed." << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // bail if system encountered an error.
     if(!gMessageSystem->isOK())
     {
-        return FALSE;
+        return false;
     }
 
     if (b_dump_prehash_file)
@@ -2514,12 +2517,12 @@ bool start_messaging_system(
     // Initialize the transfer manager
     gTransferManager.init();
 
-    return TRUE;
+    return true;
 }
 
 void LLMessageSystem::startLogging()
 {
-    mVerboseLog = TRUE;
+    mVerboseLog = true;
     std::ostringstream str;
     str << "START MESSAGE LOG" << std::endl;
     str << "Legend:" << std::endl;
@@ -2533,7 +2536,7 @@ void LLMessageSystem::stopLogging()
 {
     if(mVerboseLog)
     {
-        mVerboseLog = FALSE;
+        mVerboseLog = false;
         LL_INFOS("Messaging") << "END MESSAGE LOG" << LL_ENDL;
     }
 }
@@ -2712,7 +2715,7 @@ void LLMessageSystem::dumpReceiveCounts()
 
 
 
-BOOL LLMessageSystem::isClear() const
+bool LLMessageSystem::isClear() const
 {
     return mMessageBuilder->isClear();
 }
@@ -2754,7 +2757,7 @@ S32 LLMessageSystem::zeroCodeAdjustCurrentSendTotal()
             0);
     }
     // TODO: babbage: remove this horror
-    mMessageBuilder->setBuilt(FALSE);
+    mMessageBuilder->setBuilt(false);
 
     S32 count = mSendSize;
 
@@ -2978,12 +2981,12 @@ void LLMessageSystem::setExceptionFunc(EMessageException e,
     }
 }
 
-BOOL LLMessageSystem::callExceptionFunc(EMessageException exception)
+bool LLMessageSystem::callExceptionFunc(EMessageException exception)
 {
     callbacks_t::iterator it = mExceptionCallbacks.find(exception);
     if(it == mExceptionCallbacks.end())
     {
-        return FALSE;
+        return false;
     }
 
     exception_t& ex = it->second;
@@ -2992,12 +2995,12 @@ BOOL LLMessageSystem::callExceptionFunc(EMessageException exception)
     if (!ex_cb)
     {
         LL_WARNS("Messaging") << "LLMessageSystem::callExceptionFunc: bad message exception callback." << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     (ex_cb)(this, ex.second, exception);
 
-    return TRUE;
+    return true;
 }
 
 void LLMessageSystem::setTimingFunc(msg_timing_callback func, void* data)
@@ -3006,14 +3009,14 @@ void LLMessageSystem::setTimingFunc(msg_timing_callback func, void* data)
     mTimingCallbackData = data;
 }
 
-BOOL LLMessageSystem::isCircuitCodeKnown(U32 code) const
+bool LLMessageSystem::isCircuitCodeKnown(U32 code) const
 {
     if(mCircuitCodes.find(code) == mCircuitCodes.end())
-        return FALSE;
-    return TRUE;
+        return false;
+    return true;
 }
 
-BOOL LLMessageSystem::isMessageFast(const char *msg)
+bool LLMessageSystem::isMessageFast(const char *msg)
 {
     return msg == mMessageReader->getMessageName();
 }
@@ -3354,7 +3357,7 @@ void LLMessageSystem::dumpPacketToLog()
 
 
 //static
-U64Microseconds LLMessageSystem::getMessageTimeUsecs(const BOOL update)
+U64Microseconds LLMessageSystem::getMessageTimeUsecs(const bool update)
 {
     if (gMessageSystem)
     {
@@ -3371,7 +3374,7 @@ U64Microseconds LLMessageSystem::getMessageTimeUsecs(const BOOL update)
 }
 
 //static
-F64Seconds LLMessageSystem::getMessageTimeSeconds(const BOOL update)
+F64Seconds LLMessageSystem::getMessageTimeSeconds(const bool update)
 {
     if (gMessageSystem)
     {
@@ -3429,7 +3432,7 @@ void LLMessageSystem::newMessageFast(const char *name)
             mMessageBuilder = mTemplateMessageBuilder;
         }
     }
-    mSendReliable = FALSE;
+    mSendReliable = false;
     mMessageBuilder->newMessage(name);
 }
 
@@ -3558,12 +3561,12 @@ void LLMessageSystem::addIPPort(const char *varname, U16 v)
     mMessageBuilder->addIPPort(LLMessageStringTable::getInstance()->getString(varname), v);
 }
 
-void LLMessageSystem::addBOOLFast(const char* varname, BOOL v)
+void LLMessageSystem::addBOOLFast(const char* varname, bool v)
 {
     mMessageBuilder->addBOOL(varname, v);
 }
 
-void LLMessageSystem::addBOOL(const char* varname, BOOL v)
+void LLMessageSystem::addBOOL(const char* varname, bool v)
 {
     mMessageBuilder->addBOOL(LLMessageStringTable::getInstance()->getString(varname), v);
 }
@@ -3670,13 +3673,13 @@ void LLMessageSystem::getU8(const char *block, const char *var, U8 &u,
                 LLMessageStringTable::getInstance()->getString(var), u, blocknum);
 }
 
-void LLMessageSystem::getBOOLFast(const char *block, const char *var, BOOL &b,
+void LLMessageSystem::getBOOLFast(const char *block, const char *var, bool &b,
                                   S32 blocknum)
 {
     mMessageReader->getBOOL(block, var, b, blocknum);
 }
 
-void LLMessageSystem::getBOOL(const char *block, const char *var, BOOL &b,
+void LLMessageSystem::getBOOL(const char *block, const char *var, bool &b,
                               S32 blocknum)
 {
     getBOOLFast(LLMessageStringTable::getInstance()->getString(block),
@@ -3920,7 +3923,7 @@ void LLMessageSystem::getString(const char *block, const char *var,
                   blocknum);
 }
 
-BOOL    LLMessageSystem::has(const char *blockname) const
+bool    LLMessageSystem::has(const char *blockname) const
 {
     return getNumberOfBlocks(blockname) > 0;
 }
@@ -3966,7 +3969,7 @@ S32 LLMessageSystem::getReceiveSize() const
 }
 
 //static
-void LLMessageSystem::setTimeDecodes( BOOL b )
+void LLMessageSystem::setTimeDecodes( bool b )
 {
     LLMessageReader::setTimeDecodes(b);
 }
diff --git a/indra/llmessage/message.h b/indra/llmessage/message.h
index 2d212c6b3c..b4b0d94021 100644
--- a/indra/llmessage/message.h
+++ b/indra/llmessage/message.h
@@ -74,7 +74,7 @@ public:
     char *getString(const char *str);
 
     U32  mUsed;
-    BOOL mEmpty[MESSAGE_NUMBER_OF_HASH_BUCKETS];
+    bool mEmpty[MESSAGE_NUMBER_OF_HASH_BUCKETS];
     char mString[MESSAGE_NUMBER_OF_HASH_BUCKETS][MESSAGE_MAX_STRINGS_LENGTH];   /* Flawfinder: ignore */
 };
 
@@ -295,8 +295,8 @@ class LLMessageSystem : public LLMessageSenderInterface
     LLPacketRing                mPacketRing;
     LLReliablePacketParams      mReliablePacketParams;
 
-    // Set this flag to TRUE when you want *very* verbose logs.
-    BOOL                        mVerboseLog;
+    // Set this flag to true when you want *very* verbose logs.
+    bool                        mVerboseLog;
 
     F32                         mMessageFileVersionNumber;
 
@@ -314,7 +314,7 @@ public:
     S32                 mSystemVersionServer;
     U32                 mVersionFlags;
 
-    BOOL                mbProtected;
+    bool                mbProtected;
 
     U32                 mNumberHighFreqMessages;
     U32                 mNumberMediumFreqMessages;
@@ -347,7 +347,7 @@ public:
     S64                 mTotalBytesIn;          // total size of all uncompressed packets in
     S64                 mTotalBytesOut;         // total size of all uncompressed packets out
 
-    BOOL                mSendReliable;              // does the outgoing message require a pos ack?
+    bool                mSendReliable;              // does the outgoing message require a pos ack?
 
     LLCircuit           mCircuitInfo;
     F64Seconds          mCircuitPrintTime;      // used to print circuit debug info every couple minutes
@@ -370,7 +370,7 @@ public:
 
     ~LLMessageSystem();
 
-    BOOL isOK() const { return !mbError; }
+    bool isOK() const { return !mbError; }
     S32 getErrorCode() const { return mErrorCode; }
 
     // Read file and build message templates filename must point to a
@@ -388,9 +388,9 @@ public:
 
     // Set a callback function for a message system exception.
     void setExceptionFunc(EMessageException exception, msg_exception_callback func, void* data = NULL);
-    // Call the specified exception func, and return TRUE if a
-    // function was found and called. Otherwise return FALSE.
-    BOOL callExceptionFunc(EMessageException exception);
+    // Call the specified exception func, and return true if a
+    // function was found and called. Otherwise return false.
+    bool callExceptionFunc(EMessageException exception);
 
     // Set a function that will be called once per packet processed with the
     // hashed message name and the time spent in the processing handler function
@@ -407,18 +407,18 @@ public:
     }
 
     // This method returns true if the code is in the circuit codes map.
-    BOOL isCircuitCodeKnown(U32 code) const;
+    bool isCircuitCodeKnown(U32 code) const;
 
     // usually called in response to an AddCircuitCode message, but
     // may also be called by the login process.
     bool addCircuitCode(U32 code, const LLUUID& session_id);
 
-    BOOL    poll(F32 seconds); // Number of seconds that we want to block waiting for data, returns if data was received
-    BOOL    checkMessages(LockMessageChecker&, S64 frame_count = 0 );
+    bool    poll(F32 seconds); // Number of seconds that we want to block waiting for data, returns if data was received
+    bool    checkMessages(LockMessageChecker&, S64 frame_count = 0 );
     void    processAcks(LockMessageChecker&, F32 collect_time = 0.f);
 
-    BOOL    isMessageFast(const char *msg);
-    BOOL    isMessage(const char *msg)
+    bool    isMessageFast(const char *msg);
+    bool    isMessage(const char *msg)
     {
         return isMessageFast(LLMessageStringTable::getInstance()->getString(msg));
     }
@@ -482,8 +482,8 @@ public:
     void addBinaryDataFast(const char *varname, const void *data, S32 size);
     void addBinaryData(const char *varname, const void *data, S32 size);
 
-    void    addBOOLFast( const char* varname, BOOL b);                      // typed, checks storage space
-    void    addBOOL( const char* varname, BOOL b);                      // typed, checks storage space
+    void    addBOOLFast( const char* varname, bool b);                      // typed, checks storage space
+    void    addBOOL( const char* varname, bool b);                      // typed, checks storage space
     void    addS8Fast(  const char *varname, S8 s);                         // typed, checks storage space
     void    addS8(  const char *varname, S8 s);                         // typed, checks storage space
     void    addU8Fast(  const char *varname, U8 u);                         // typed, checks storage space
@@ -528,10 +528,10 @@ public:
     // you need to go to the next block type or need to start a new
     // message. Specify the current blockname to check block counts,
     // otherwise the method only checks against MTU.
-    BOOL isSendFull(const char* blockname = NULL);
-    BOOL isSendFullFast(const char* blockname = NULL);
+    bool isSendFull(const char* blockname = NULL);
+    bool isSendFullFast(const char* blockname = NULL);
 
-    BOOL removeLastBlock();
+    bool removeLastBlock();
 
     //void  buildMessage();
 
@@ -548,7 +548,7 @@ public:
     // Use this one if you DON'T want automatic ping-based retry.
     S32 sendReliable(   const LLHost &host,
                             S32 retries,
-                            BOOL ping_based_retries,
+                            bool ping_based_retries,
                             F32Seconds timeout,
                             void (*callback)(void **,S32),
                             void ** callback_data);
@@ -568,7 +568,7 @@ public:
     S32 forwardReliable(
         const LLHost &host,
         S32 retries,
-        BOOL ping_based_timeout,
+        bool ping_based_timeout,
         F32Seconds timeout,
         void (*callback)(void **,S32),
         void ** callback_data);
@@ -579,7 +579,7 @@ private:
     S32     sendMessage(const LLHost &host, const char* name,
                         const LLSD& message);
 public:
-    // BOOL decodeData(const U8 *buffer, const LLHost &host);
+    // bool decodeData(const U8 *buffer, const LLHost &host);
 
     /**
     gets binary data from the current message.
@@ -599,8 +599,8 @@ public:
     */
     void    getBinaryDataFast(const char *blockname, const char *varname, void *datap, S32 size, S32 blocknum = 0, S32 max_size = S32_MAX);
     void    getBinaryData(const char *blockname, const char *varname, void *datap, S32 size, S32 blocknum = 0, S32 max_size = S32_MAX);
-    void    getBOOLFast(    const char *block, const char *var, BOOL &data, S32 blocknum = 0);
-    void    getBOOL(    const char *block, const char *var, BOOL &data, S32 blocknum = 0);
+    void    getBOOLFast(    const char *block, const char *var, bool &data, S32 blocknum = 0);
+    void    getBOOL(    const char *block, const char *var, bool &data, S32 blocknum = 0);
     void    getS8Fast(      const char *block, const char *var, S8 &data, S32 blocknum = 0);
     void    getS8(      const char *block, const char *var, S8 &data, S32 blocknum = 0);
     void    getU8Fast(      const char *block, const char *var, U8 &data, S32 blocknum = 0);
@@ -659,7 +659,7 @@ public:
 
     U32 getOurCircuitCode();
 
-    void    enableCircuit(const LLHost &host, BOOL trusted);
+    void    enableCircuit(const LLHost &host, bool trusted);
     void    disableCircuit(const LLHost &host);
 
     // Use this to establish trust on startup and in response to
@@ -712,20 +712,20 @@ public:
 
     // returns whether the given host is on a trusted circuit
     // Note:DaveH/Babbage some trusted messages can be received without a circuit
-    BOOL    getCircuitTrust(const LLHost &host);
+    bool    getCircuitTrust(const LLHost &host);
 
-    void    setCircuitAllowTimeout(const LLHost &host, BOOL allow);
+    void    setCircuitAllowTimeout(const LLHost &host, bool allow);
     void    setCircuitTimeoutCallback(const LLHost &host, void (*callback_func)(const LLHost &host, void *user_data), void *user_data);
 
-    BOOL    checkCircuitBlocked(const U32 circuit);
-    BOOL    checkCircuitAlive(const U32 circuit);
-    BOOL    checkCircuitAlive(const LLHost &host);
-    void    setCircuitProtection(BOOL b_protect);
+    bool    checkCircuitBlocked(const U32 circuit);
+    bool    checkCircuitAlive(const U32 circuit);
+    bool    checkCircuitAlive(const LLHost &host);
+    void    setCircuitProtection(bool b_protect);
     U32     findCircuitCode(const LLHost &host);
     LLHost  findHost(const U32 circuit_code);
     void    sanityCheck();
 
-    BOOL    has(const char *blockname) const;
+    bool    has(const char *blockname) const;
     S32     getNumberOfBlocksFast(const char *blockname) const;
     S32     getNumberOfBlocks(const char *blockname) const;
     S32     getSizeFast(const char *blockname, const char *varname) const;
@@ -738,7 +738,7 @@ public:
     void    dumpReceiveCounts();                // dumps receive count for each message type to LL_INFOS()
     void    dumpCircuitInfo();                  // Circuit information to LL_INFOS()
 
-    BOOL    isClear() const;                    // returns mbSClear;
+    bool    isClear() const;                    // returns mbSClear;
     S32     flush(const LLHost &host);
 
     U32     getListenPort( void ) const;
@@ -762,10 +762,10 @@ public:
     void setMaxMessageTime(const F32 seconds);  // Max time to process messages before warning and dumping (neg to disable)
     void setMaxMessageCounts(const S32 num);    // Max number of messages before dumping (neg to disable)
 
-    static U64Microseconds getMessageTimeUsecs(const BOOL update = FALSE);  // Get the current message system time in microseconds
-    static F64Seconds getMessageTimeSeconds(const BOOL update = FALSE); // Get the current message system time in seconds
+    static U64Microseconds getMessageTimeUsecs(const bool update = false);  // Get the current message system time in microseconds
+    static F64Seconds getMessageTimeSeconds(const bool update = false); // Get the current message system time in seconds
 
-    static void setTimeDecodes(BOOL b);
+    static void setTimeDecodes(bool b);
     static void setTimeDecodesSpamThreshold(F32 seconds);
 
     // message handlers internal to the message systesm
@@ -839,11 +839,11 @@ private:
     LLUUID mSessionID;
 
     void    addTemplate(LLMessageTemplate *templatep);
-    BOOL        decodeTemplate( const U8* buffer, S32 buffer_size, LLMessageTemplate** msg_template );
+    bool        decodeTemplate( const U8* buffer, S32 buffer_size, LLMessageTemplate** msg_template );
 
-    void        logMsgFromInvalidCircuit( const LLHost& sender, BOOL recv_reliable );
+    void        logMsgFromInvalidCircuit( const LLHost& sender, bool recv_reliable );
     void        logTrustedMsgFromUntrustedCircuit( const LLHost& sender );
-    void        logValidMsg(LLCircuitData *cdp, const LLHost& sender, BOOL recv_reliable, BOOL recv_resent, BOOL recv_acks );
+    void        logValidMsg(LLCircuitData *cdp, const LLHost& sender, bool recv_reliable, bool recv_resent, bool recv_acks );
     void        logRanOffEndOfPacket( const LLHost& sender );
 
     class LLMessageCountInfo
@@ -851,7 +851,7 @@ private:
     public:
         U32 mMessageNum;
         U32 mMessageBytes;
-        BOOL mInvalid;
+        bool mInvalid;
     };
 
     LLMessagePollInfo                       *mPollInfop;
@@ -862,7 +862,7 @@ private:
 
     // Must be valid during decode
 
-    BOOL    mbError;
+    bool    mbError;
     S32 mErrorCode;
 
     F64Seconds                                      mResendDumpTime; // The last time we dumped resends
@@ -885,7 +885,7 @@ private:
     LLTimer mMessageSystemTimer;
 
     static F32 mTimeDecodesSpamThreshold;  // If mTimeDecodes is on, all this many seconds for each msg decode before spamming
-    static BOOL mTimeDecodes;  // Measure time for all message decodes if TRUE;
+    static bool mTimeDecodes;  // Measure time for all message decodes if true;
 
     msg_timing_callback mTimingCallback;
     void* mTimingCallbackData;
diff --git a/indra/llmessage/message_string_table.cpp b/indra/llmessage/message_string_table.cpp
index df4bfa29ad..6d2157eec9 100644
--- a/indra/llmessage/message_string_table.cpp
+++ b/indra/llmessage/message_string_table.cpp
@@ -47,7 +47,7 @@ LLMessageStringTable::LLMessageStringTable()
 {
     for (U32 i = 0; i < MESSAGE_NUMBER_OF_HASH_BUCKETS; i++)
     {
-        mEmpty[i] = TRUE;
+        mEmpty[i] = true;
         mString[i][0] = 0;
     }
 }
@@ -75,7 +75,7 @@ char* LLMessageStringTable::getString(const char *str)
     // not found, so add!
     strncpy(mString[hash_value], str, MESSAGE_MAX_STRINGS_LENGTH);  /* Flawfinder: ignore */
     mString[hash_value][MESSAGE_MAX_STRINGS_LENGTH - 1] = 0;
-    mEmpty[hash_value] = FALSE;
+    mEmpty[hash_value] = false;
     mUsed++;
     if (mUsed >= MESSAGE_NUMBER_OF_HASH_BUCKETS - 1)
     {
diff --git a/indra/llmessage/net.cpp b/indra/llmessage/net.cpp
index c8552b3fb4..1c49f9be36 100644
--- a/indra/llmessage/net.cpp
+++ b/indra/llmessage/net.cpp
@@ -77,7 +77,7 @@ const char* LOOPBACK_ADDRESS_STRING = "127.0.0.1";
 const char* BROADCAST_ADDRESS_STRING = "255.255.255.255";
 
 #if LL_DARWIN
-    // Mac OS X returns an error when trying to set these to 400000.  Smaller values succeed.
+    // macOS returns an error when trying to set these to 400000.  Smaller values succeed.
     const int   SEND_BUFFER_SIZE    = 200000;
     const int   RECEIVE_BUFFER_SIZE = 200000;
 #else // LL_DARWIN
@@ -338,8 +338,8 @@ S32 receive_packet(int hSocket, char * receiveBuffer)
     return nRet;
 }
 
-// Returns TRUE on success.
-BOOL send_packet(int hSocket, const char *sendBuffer, int size, U32 recipient, int nPort)
+// Returns true on success.
+bool send_packet(int hSocket, const char *sendBuffer, int size, U32 recipient, int nPort)
 {
     //  Sends a packet to the address set in initNet
     //
@@ -364,7 +364,7 @@ BOOL send_packet(int hSocket, const char *sendBuffer, int size, U32 recipient, i
                 // assume it is.  JNC 2002.01.18
                 if (WSAECONNRESET == WSAGetLastError())
                 {
-                    return TRUE;
+                    return true;
                 }
                 LL_INFOS() << "sendto() failed to " << u32_to_ip_string(recipient) << ":" << nPort
                     << ", Error " << last_error << LL_ENDL;
@@ -598,11 +598,11 @@ int receive_packet(int hSocket, char * receiveBuffer)
     return nRet;
 }
 
-BOOL send_packet(int hSocket, const char * sendBuffer, int size, U32 recipient, int nPort)
+bool send_packet(int hSocket, const char * sendBuffer, int size, U32 recipient, int nPort)
 {
     int     ret;
-    BOOL    success;
-    BOOL    resend;
+    bool    success;
+    bool    resend;
     S32     send_attempts = 0;
 
     stDstAddr.sin_addr.s_addr = recipient;
@@ -616,34 +616,34 @@ BOOL send_packet(int hSocket, const char * sendBuffer, int size, U32 recipient,
         if (ret >= 0)
         {
             // successful send
-            success = TRUE;
-            resend = FALSE;
+            success = true;
+            resend = false;
         }
         else
         {
             // send failed, check to see if we should resend
-            success = FALSE;
+            success = false;
 
             if (errno == EAGAIN)
             {
                 // say nothing, just repeat send
                 LL_INFOS() << "sendto() reported buffer full, resending (attempt " << send_attempts << ")" << LL_ENDL;
                 LL_INFOS() << inet_ntoa(stDstAddr.sin_addr) << ":" << nPort << LL_ENDL;
-                resend = TRUE;
+                resend = true;
             }
             else if (errno == ECONNREFUSED)
             {
                 // response to ICMP connection refused message on earlier send
                 LL_INFOS() << "sendto() reported connection refused, resending (attempt " << send_attempts << ")" << LL_ENDL;
                 LL_INFOS() << inet_ntoa(stDstAddr.sin_addr) << ":" << nPort << LL_ENDL;
-                resend = TRUE;
+                resend = true;
             }
             else
             {
                 // some other error
                 LL_INFOS() << "sendto() failed: " << errno << ", " << strerror(errno) << LL_ENDL;
                 LL_INFOS() << inet_ntoa(stDstAddr.sin_addr) << ":" << nPort << LL_ENDL;
-                resend = FALSE;
+                resend = false;
             }
         }
     }
@@ -652,7 +652,7 @@ BOOL send_packet(int hSocket, const char * sendBuffer, int size, U32 recipient,
     if (send_attempts >= 3)
     {
         LL_INFOS() << "sendPacket() bailed out of send!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     return success;
diff --git a/indra/llmessage/net.h b/indra/llmessage/net.h
index d647da2570..c41f3bb89f 100644
--- a/indra/llmessage/net.h
+++ b/indra/llmessage/net.h
@@ -43,7 +43,7 @@ void    end_net(S32& socket_out);
 // returns size of packet or -1 in case of error
 S32     receive_packet(int hSocket, char * receiveBuffer);
 
-BOOL    send_packet(int hSocket, const char *sendBuffer, int size, U32 recipient, int nPort);   // Returns TRUE on success.
+bool    send_packet(int hSocket, const char *sendBuffer, int size, U32 recipient, int nPort);   // Returns true on success.
 
 //void  get_sender(char * tmp);
 LLHost  get_sender();
diff --git a/indra/llmessage/partsyspacket.cpp b/indra/llmessage/partsyspacket.cpp
index 84f3e2cc12..6113adbfcf 100644
--- a/indra/llmessage/partsyspacket.cpp
+++ b/indra/llmessage/partsyspacket.cpp
@@ -89,7 +89,7 @@ void gSetInitDataDefaults(LLPartInitData *setMe)
         setMe->mFlags[i] = 0x00;
     }
 
-    setMe->createMe = TRUE;
+    setMe->createMe = true;
 
     setMe->maxParticles = 25;
     setMe->initialParticles = 25;
@@ -1052,7 +1052,7 @@ U32 LLPartSysCompressedPacket::readWindDiffusionFactor(LLPartInitData *in, U32 s
     return startByte;
 }
 
-BOOL LLPartSysCompressedPacket::fromLLPartInitData(LLPartInitData *in, U32 &bytesUsed)
+bool LLPartSysCompressedPacket::fromLLPartInitData(LLPartInitData *in, U32 &bytesUsed)
 {
 
     writeFlagByte(in);
@@ -1168,10 +1168,10 @@ BOOL LLPartSysCompressedPacket::fromLLPartInitData(LLPartInitData *in, U32 &byte
 
 //  llprintline("returning from \"fromLLPartInitData\" with %d bytes\n", bytesUsed);
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLPartSysCompressedPacket::toLLPartInitData(LLPartInitData *out, U32 *bytesUsed)
+bool LLPartSysCompressedPacket::toLLPartInitData(LLPartInitData *out, U32 *bytesUsed)
 {
     U32 currByte = 4;
 
@@ -1259,21 +1259,21 @@ BOOL LLPartSysCompressedPacket::toLLPartInitData(LLPartInitData *out, U32 *bytes
     }
 
     *bytesUsed = currByte;
-    return TRUE;
+    return true;
 }
 
-BOOL LLPartSysCompressedPacket::fromUnsignedBytes(U8 *in, U32 bytesUsed)
+bool LLPartSysCompressedPacket::fromUnsignedBytes(U8 *in, U32 bytesUsed)
 {
     if ((in != NULL) && (bytesUsed <= sizeof(mData)))
     {
         memcpy(mData, in, bytesUsed);   /* Flawfinder: ignore */
         mNumBytes = bytesUsed;
-        return TRUE;
+        return true;
     }
     else
     {
         LL_ERRS() << "NULL input data or number of bytes exceed mData size" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 }
 
@@ -1283,10 +1283,10 @@ U32 LLPartSysCompressedPacket::bufferSize()
     return mNumBytes;
 }
 
-BOOL LLPartSysCompressedPacket::toUnsignedBytes(U8 *out)
+bool LLPartSysCompressedPacket::toUnsignedBytes(U8 *out)
 {
     memcpy(out, mData, mNumBytes);      /* Flawfinder: ignore */
-    return TRUE;
+    return true;
 }
 
 U8 * LLPartSysCompressedPacket::getBytePtr()
diff --git a/indra/llmessage/partsyspacket.h b/indra/llmessage/partsyspacket.h
index 302d3b7cb8..23307f3409 100644
--- a/indra/llmessage/partsyspacket.h
+++ b/indra/llmessage/partsyspacket.h
@@ -102,7 +102,7 @@ struct LLPartInitData {
         //How much of an effect does gravity have
     F32 globalLifetime;
         //If particles re-spawn, a system can exist forever.
-        //If (ActionFlags & PART_SYS_GLOBAL_DIE) is TRUE this variable is used to determine how long the system lasts.
+        //If (ActionFlags & PART_SYS_GLOBAL_DIE) is true this variable is used to determine how long the system lasts.
     F32 individualLifetime;
         //How long does each particle last if nothing else happens to it
     F32 individualLifetimeRange;
@@ -132,7 +132,7 @@ const int PART_SYS_SLOW_ANIM_BYTE = 0; // slow animation down by a factor of 10
 const int PART_SYS_SLOW_ANIM_BIT = 1;  // useful for tweaking anims during debugging
 
 const int PART_SYS_FOLLOW_VEL_BYTE = 0; // indicates whether to orient sprites towards
-const int PART_SYS_FOLLOW_VEL_BIT = 4;  // their velocity vector -- default is FALSE
+const int PART_SYS_FOLLOW_VEL_BIT = 4;  // their velocity vector -- default is false
 
 const int PART_SYS_IS_LIGHT_BYTE = 0;   // indicates whether a particular particle system
 const int PART_SYS_IS_LIGHT_BIT = 8;    // is also a light object -- for andrew
@@ -202,10 +202,10 @@ class LLPartSysCompressedPacket
 public:
     LLPartSysCompressedPacket();
     ~LLPartSysCompressedPacket();
-    BOOL    fromLLPartInitData(LLPartInitData *in, U32 &bytesUsed);
-    BOOL    toLLPartInitData(LLPartInitData *out, U32 *bytesUsed);
-    BOOL    fromUnsignedBytes(U8 *in, U32 bytesUsed);
-    BOOL    toUnsignedBytes(U8 *out);
+    bool    fromLLPartInitData(LLPartInitData *in, U32 &bytesUsed);
+    bool    toLLPartInitData(LLPartInitData *out, U32 *bytesUsed);
+    bool    fromUnsignedBytes(U8 *in, U32 bytesUsed);
+    bool    toUnsignedBytes(U8 *out);
     U32     bufferSize();
     U8      *getBytePtr();
 
diff --git a/indra/llmessage/patch_code.cpp b/indra/llmessage/patch_code.cpp
index ad5602e391..489b6ce6a6 100644
--- a/indra/llmessage/patch_code.cpp
+++ b/indra/llmessage/patch_code.cpp
@@ -130,7 +130,7 @@ void code_patch(LLBitPack &bitpack, S32 *patch, S32 postquant)
 {
     S32     i, j, patch_size = gPatchSize, wbits = gWordBits;
     S32     temp;
-    BOOL    b_eob;
+    bool    b_eob;
 
     if (  (postquant > patch_size*patch_size)
         ||(postquant < 0))
@@ -143,16 +143,16 @@ void code_patch(LLBitPack &bitpack, S32 *patch, S32 postquant)
 
     for (i = 0; i < patch_size*patch_size; i++)
     {
-        b_eob = FALSE;
+        b_eob = false;
         temp = patch[i];
         if (!temp)
         {
-            b_eob = TRUE;
+            b_eob = true;
             for (j = i; j < patch_size*patch_size - postquant; j++)
             {
                 if (patch[j])
                 {
-                    b_eob = FALSE;
+                    b_eob = false;
                     break;
                 }
             }
diff --git a/indra/llmessage/patch_dct.cpp b/indra/llmessage/patch_dct.cpp
index 66cb256529..728fe84537 100644
--- a/indra/llmessage/patch_dct.cpp
+++ b/indra/llmessage/patch_dct.cpp
@@ -85,8 +85,8 @@ S32 gCopyMatrix[LARGE_PATCH_SIZE*LARGE_PATCH_SIZE];
 void build_copy_matrix(S32 size)
 {
     S32 i, j, count;
-    BOOL    b_diag = FALSE;
-    BOOL    b_right = TRUE;
+    bool    b_diag = false;
+    bool    b_right = true;
 
     i = 0;
     j = 0;
@@ -107,8 +107,8 @@ void build_copy_matrix(S32 size)
                     i++;
                 else
                     j++;
-                b_right = FALSE;
-                b_diag = TRUE;
+                b_right = false;
+                b_diag = true;
             }
             else
             {
@@ -116,8 +116,8 @@ void build_copy_matrix(S32 size)
                     j++;
                 else
                     i++;
-                b_right = TRUE;
-                b_diag = TRUE;
+                b_right = true;
+                b_diag = true;
             }
         }
         else
@@ -129,7 +129,7 @@ void build_copy_matrix(S32 size)
                 if (  (i == size - 1)
                     ||(j == 0))
                 {
-                    b_diag = FALSE;
+                    b_diag = false;
                 }
             }
             else
@@ -139,7 +139,7 @@ void build_copy_matrix(S32 size)
                 if (  (i == 0)
                     ||(j == size - 1))
                 {
-                    b_diag = FALSE;
+                    b_diag = false;
                 }
             }
         }
diff --git a/indra/llmessage/patch_idct.cpp b/indra/llmessage/patch_idct.cpp
index 230b73726c..5483cf98c0 100644
--- a/indra/llmessage/patch_idct.cpp
+++ b/indra/llmessage/patch_idct.cpp
@@ -74,8 +74,8 @@ S32 gDeCopyMatrix[LARGE_PATCH_SIZE*LARGE_PATCH_SIZE];
 void build_decopy_matrix(S32 size)
 {
     S32 i, j, count;
-    BOOL    b_diag = FALSE;
-    BOOL    b_right = TRUE;
+    bool    b_diag = false;
+    bool    b_right = true;
 
     i = 0;
     j = 0;
@@ -96,8 +96,8 @@ void build_decopy_matrix(S32 size)
                     i++;
                 else
                     j++;
-                b_right = FALSE;
-                b_diag = TRUE;
+                b_right = false;
+                b_diag = true;
             }
             else
             {
@@ -105,8 +105,8 @@ void build_decopy_matrix(S32 size)
                     j++;
                 else
                     i++;
-                b_right = TRUE;
-                b_diag = TRUE;
+                b_right = true;
+                b_diag = true;
             }
         }
         else
@@ -118,7 +118,7 @@ void build_decopy_matrix(S32 size)
                 if (  (i == size - 1)
                     ||(j == 0))
                 {
-                    b_diag = FALSE;
+                    b_diag = false;
                 }
             }
             else
@@ -128,7 +128,7 @@ void build_decopy_matrix(S32 size)
                 if (  (i == 0)
                     ||(j == size - 1))
                 {
-                    b_diag = FALSE;
+                    b_diag = false;
                 }
             }
         }
@@ -658,8 +658,8 @@ void decompress_patchv(LLVector3 *v, S32 *cpatch, LLPatchHeader *ph)
     F32     mult = ooq*range;
     F32     addval = mult*(F32)(1<<(prequant - 1))+hmin;
 
-//  BOOL    b_diag = FALSE;
-//  BOOL    b_right = TRUE;
+//  bool    b_diag = false;
+//  bool    b_right = true;
 
     for (i = 0; i < size*size; i++)
     {
diff --git a/indra/llmessage/tests/lltemplatemessagedispatcher_test.cpp b/indra/llmessage/tests/lltemplatemessagedispatcher_test.cpp
index 911aef827d..c5b852453f 100644
--- a/indra/llmessage/tests/lltemplatemessagedispatcher_test.cpp
+++ b/indra/llmessage/tests/lltemplatemessagedispatcher_test.cpp
@@ -47,15 +47,15 @@ void LLMessageSystem::clearReceiveState(void)
 
 char gUdpDispatchedData[MAX_BUFFER_SIZE];
 bool gUdpDispatchWasCalled = false;
-BOOL LLTemplateMessageReader::readMessage(const U8* data,class LLHost const &)
+bool LLTemplateMessageReader::readMessage(const U8* data,class LLHost const &)
 {
     gUdpDispatchWasCalled = true;
     strcpy(gUdpDispatchedData, reinterpret_cast<const char*>(data));
     return  true;
 }
 
-BOOL gValidateMessage = FALSE;
-BOOL LLTemplateMessageReader::validateMessage(const U8*, S32 buffer_size, LLHost const &sender, bool trusted)
+bool gValidateMessage = false;
+bool LLTemplateMessageReader::validateMessage(const U8*, S32 buffer_size, LLHost const &sender, bool trusted)
 {
     return gValidateMessage;
 }
@@ -84,7 +84,7 @@ namespace tut
                 mMessageName = "MessageName";
                 gUdpDispatchWasCalled = false;
                 gClearRecvWasCalled = false;
-                gValidateMessage = FALSE;
+                gValidateMessage = false;
                 mMessage["body"]["binary-template-data"] = std::vector<U8>();
             }
 
@@ -121,7 +121,7 @@ namespace tut
     {
         LLTemplateMessageReader* pReader = NULL;
         LLTemplateMessageDispatcher t(*pReader);
-        gValidateMessage = TRUE;
+        gValidateMessage = true;
         std::vector<U8> vector_data;
         fillVector(vector_data, gBinaryTemplateData);
         mMessage["body"]["binary-template-data"] = vector_data;
@@ -138,7 +138,7 @@ namespace tut
         std::vector<U8> vector_data;
         fillVector(vector_data, gBinaryTemplateData);
         mMessage["body"]["binary-template-data"] = vector_data;
-        gValidateMessage = FALSE;
+        gValidateMessage = false;
         t.dispatch(mMessageName, mMessage, mResponsePtr);
         ensure("clear received message was called", gClearRecvWasCalled);
     }
@@ -149,7 +149,7 @@ namespace tut
     {
         LLTemplateMessageReader* pReader = NULL;
         LLTemplateMessageDispatcher t(*pReader);
-        gValidateMessage = TRUE;
+        gValidateMessage = true;
         std::vector<U8> vector_data;
         fillVector(vector_data, gBinaryTemplateData);
         mMessage["body"]["binary-template-data"] = vector_data;
diff --git a/indra/llmessage/tests/llxfer_file_test.cpp b/indra/llmessage/tests/llxfer_file_test.cpp
index af0cc5b5ab..358659a5b9 100644
--- a/indra/llmessage/tests/llxfer_file_test.cpp
+++ b/indra/llmessage/tests/llxfer_file_test.cpp
@@ -51,7 +51,7 @@ namespace tut
             oversized_filename += 'X';
         }
 
-        LLXfer_File xff(oversized_filename, FALSE, 1);
+        LLXfer_File xff(oversized_filename, false, 1);
         ensure("oversized local_filename nul-terminated",
                xff.getFileName().length() < LL_MAX_PATH);
     }
diff --git a/indra/llplugin/llpluginclassmedia.cpp b/indra/llplugin/llpluginclassmedia.cpp
index 453223b43e..cffbe3d8bd 100644
--- a/indra/llplugin/llpluginclassmedia.cpp
+++ b/indra/llplugin/llpluginclassmedia.cpp
@@ -37,7 +37,7 @@
 extern LLControlGroup gSavedSettings;
 #endif
 #if LL_DARWIN
-extern BOOL gHiDPISupport;
+extern bool gHiDPISupport;
 #endif
 
 static int LOW_PRIORITY_TEXTURE_SIZE_DEFAULT = 256;
@@ -264,10 +264,10 @@ void LLPluginClassMedia::idle(void)
             message.setValueS32("height", mRequestedMediaHeight);
             message.setValueS32("texture_width", mRequestedTextureWidth);
             message.setValueS32("texture_height", mRequestedTextureHeight);
-            message.setValueReal("background_r", mBackgroundColor.mV[VX]);
-            message.setValueReal("background_g", mBackgroundColor.mV[VY]);
-            message.setValueReal("background_b", mBackgroundColor.mV[VZ]);
-            message.setValueReal("background_a", mBackgroundColor.mV[VW]);
+            message.setValueReal("background_r", mBackgroundColor.mV[VRED]);
+            message.setValueReal("background_g", mBackgroundColor.mV[VGREEN]);
+            message.setValueReal("background_b", mBackgroundColor.mV[VBLUE]);
+            message.setValueReal("background_a", mBackgroundColor.mV[VALPHA]);
             mPlugin->sendMessage(message);  // DO NOT just use sendMessage() here -- we want this to jump ahead of the queue.
 
             LL_DEBUGS("Plugin") << "Sending size_change" << LL_ENDL;
diff --git a/indra/llplugin/llpluginmessagepipe.cpp b/indra/llplugin/llpluginmessagepipe.cpp
index 2cbc16ceec..085afc0944 100644
--- a/indra/llplugin/llpluginmessagepipe.cpp
+++ b/indra/llplugin/llpluginmessagepipe.cpp
@@ -371,7 +371,7 @@ bool LLPluginMessagePipe::pumpInput(F64 timeout)
 void LLPluginMessagePipe::processInput(void)
 {
     // Look for input delimiter(s) in the input buffer.
-    int delim;
+    size_t delim;
     mInputMutex.lock();
     while((delim = mInput.find(MESSAGE_DELIMITER)) != std::string::npos)
     {
diff --git a/indra/llplugin/llpluginprocessparent.cpp b/indra/llplugin/llpluginprocessparent.cpp
index 6537733ddf..00abcf740f 100644
--- a/indra/llplugin/llpluginprocessparent.cpp
+++ b/indra/llplugin/llpluginprocessparent.cpp
@@ -34,7 +34,6 @@
 #include "llpluginmessageclasses.h"
 #include "llsdserialize.h"
 #include "stringize.h"
-
 #include "llapr.h"
 
 //virtual
@@ -46,7 +45,7 @@ LLPluginProcessParentOwner::~LLPluginProcessParentOwner()
 bool LLPluginProcessParent::sUseReadThread = false;
 apr_pollset_t *LLPluginProcessParent::sPollSet = NULL;
 bool LLPluginProcessParent::sPollsetNeedsRebuild = false;
-LLMutex *LLPluginProcessParent::sInstancesMutex;
+LLCoros::Mutex *LLPluginProcessParent::sInstancesMutex;
 LLPluginProcessParent::mapInstances_t LLPluginProcessParent::sInstances;
 LLThread *LLPluginProcessParent::sReadThread = NULL;
 
@@ -106,7 +105,7 @@ LLPluginProcessParent::LLPluginProcessParent(LLPluginProcessParentOwner *owner):
 {
     if(!sInstancesMutex)
     {
-        sInstancesMutex = new LLMutex();
+        sInstancesMutex = new LLCoros::Mutex();
     }
 
     mOwner = owner;
@@ -176,7 +175,7 @@ LLPluginProcessParent::ptr_t LLPluginProcessParent::create(LLPluginProcessParent
 
     // Don't add to the global list until fully constructed.
     {
-        LLMutexLock lock(sInstancesMutex);
+        LLCoros::LockType lock(*sInstancesMutex);
         sInstances.insert(mapInstances_t::value_type(that.get(), that));
     }
 
@@ -186,7 +185,7 @@ LLPluginProcessParent::ptr_t LLPluginProcessParent::create(LLPluginProcessParent
 /*static*/
 void LLPluginProcessParent::shutdown()
 {
-    LLMutexLock lock(sInstancesMutex);
+    LLCoros::LockType lock(*sInstancesMutex);
 
     mapInstances_t::iterator it;
     for (it = sInstances.begin(); it != sInstances.end(); ++it)
@@ -244,7 +243,7 @@ bool LLPluginProcessParent::pollTick()
         {
             // this grabs a copy of the smart pointer to ourselves to ensure that we do not
             // get destroyed until after this method returns.
-            LLMutexLock lock(sInstancesMutex);
+            LLCoros::LockType lock(*sInstancesMutex);
             mapInstances_t::iterator it = sInstances.find(this);
             if (it != sInstances.end())
                 that = (*it).second;
@@ -263,7 +262,7 @@ void LLPluginProcessParent::removeFromProcessing()
     // Remove from the global list before beginning destruction.
     {
         // Make sure to get the global mutex _first_ here, to avoid a possible deadlock against LLPluginProcessParent::poll()
-        LLMutexLock lock(sInstancesMutex);
+        LLCoros::LockType lock(*sInstancesMutex);
         {
             LLMutexLock lock2(&mIncomingQueueMutex);
             sInstances.erase(this);
@@ -845,7 +844,7 @@ void LLPluginProcessParent::updatePollset()
         return;
     }
 
-    LLMutexLock lock(sInstancesMutex);
+    LLCoros::LockType lock(*sInstancesMutex);
 
     if(sPollSet)
     {
@@ -968,7 +967,7 @@ void LLPluginProcessParent::poll(F64 timeout)
                 mapInstances_t::iterator it;
 
                 {
-                    LLMutexLock lock(sInstancesMutex);
+                    LLCoros::LockType lock(*sInstancesMutex);
                     it = sInstances.find(thatId);
                     if (it != sInstances.end())
                         that = (*it).second;
diff --git a/indra/llplugin/llpluginprocessparent.h b/indra/llplugin/llpluginprocessparent.h
index 1966e6b13c..d1c4933d81 100644
--- a/indra/llplugin/llpluginprocessparent.h
+++ b/indra/llplugin/llpluginprocessparent.h
@@ -207,7 +207,7 @@ private:
     apr_pollfd_t mPollFD;
     static apr_pollset_t *sPollSet;
     static bool sPollsetNeedsRebuild;
-    static LLMutex *sInstancesMutex;
+    static LLCoros::Mutex *sInstancesMutex;
     static mapInstances_t sInstances;
     static void dirtyPollSet();
     static void updatePollset();
diff --git a/indra/llplugin/llpluginsharedmemory.cpp b/indra/llplugin/llpluginsharedmemory.cpp
index 1d5f52c394..955c9f90d7 100644
--- a/indra/llplugin/llpluginsharedmemory.cpp
+++ b/indra/llplugin/llpluginsharedmemory.cpp
@@ -454,7 +454,7 @@ bool LLPluginSharedMemory::create(size_t size)
                  NULL,                      // default security
                  PAGE_READWRITE,            // read/write access
                  0,                         // max. object size
-                 mSize,                     // buffer size
+                 static_cast<DWORD>(mSize), // buffer size
                  mName.c_str());            // name of mapping object
 
     if(mImpl->mMapFile == NULL)
@@ -482,7 +482,7 @@ bool LLPluginSharedMemory::attach(const std::string &name, size_t size)
 
     mImpl->mMapFile = OpenFileMappingA(
                 FILE_MAP_ALL_ACCESS,        // read/write access
-                FALSE,                      // do not inherit the name
+                false,                      // do not inherit the name
                 mName.c_str());             // name of mapping object
 
     if(mImpl->mMapFile == NULL)
diff --git a/indra/llplugin/slplugin/slplugin.cpp b/indra/llplugin/slplugin/slplugin.cpp
index d20e01c231..ae26b9d452 100644
--- a/indra/llplugin/slplugin/slplugin.cpp
+++ b/indra/llplugin/slplugin/slplugin.cpp
@@ -88,22 +88,6 @@ LONG WINAPI myWin32ExceptionHandler( struct _EXCEPTION_POINTERS* exception_infop
     return EXCEPTION_EXECUTE_HANDLER;
 }
 
-// Taken from : http://blog.kalmbachnet.de/?postid=75
-// The MSVC 2005 CRT forces the call of the default-debugger (normally Dr.Watson)
-// even with the other exception handling code. This (terrifying) piece of code
-// patches things so that doesn't happen.
-LPTOP_LEVEL_EXCEPTION_FILTER WINAPI MyDummySetUnhandledExceptionFilter(
-    LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter )
-{
-    return NULL;
-}
-
-BOOL PreventSetUnhandledExceptionFilter()
-{
-    // remove the scary stuff that also isn't supported on 64 bit Windows
-    return TRUE;
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 //  Hook our exception handler and replace the system one
 void initExceptionHandler()
@@ -112,7 +96,6 @@ void initExceptionHandler()
 
     // save old exception handler in case we need to restore it at the end
     prev_filter = SetUnhandledExceptionFilter( myWin32ExceptionHandler );
-    PreventSetUnhandledExceptionFilter();
 }
 
 bool checkExceptionHandler()
@@ -121,18 +104,16 @@ bool checkExceptionHandler()
     LPTOP_LEVEL_EXCEPTION_FILTER prev_filter;
     prev_filter = SetUnhandledExceptionFilter(myWin32ExceptionHandler);
 
-    PreventSetUnhandledExceptionFilter();
-
     if (prev_filter != myWin32ExceptionHandler)
     {
         LL_WARNS("AppInit") << "Our exception handler (" << (void *)myWin32ExceptionHandler << ") replaced with " << prev_filter << "!" << LL_ENDL;
         ok = false;
     }
 
-    if (prev_filter == NULL)
+    if (prev_filter == nullptr)
     {
-        ok = FALSE;
-        if (NULL == myWin32ExceptionHandler)
+        ok = false;
+        if (nullptr == myWin32ExceptionHandler)
         {
             LL_WARNS("AppInit") << "Exception handler uninitialized." << LL_ENDL;
         }
@@ -245,7 +226,7 @@ int main(int argc, char **argv)
         F64 elapsed = timer.getElapsedTimeF64();
         F64 remaining = plugin->getSleepTime() - elapsed;
 
-        if(remaining <= 0.0f)
+        if(remaining <= 0.0)
         {
             // We've already used our full allotment.
 //          LL_INFOS("slplugin") << "elapsed = " << elapsed * 1000.0f << " ms, remaining = " << remaining * 1000.0f << " ms, not sleeping" << LL_ENDL;
diff --git a/indra/llprimitive/CMakeLists.txt b/indra/llprimitive/CMakeLists.txt
index f24d8ed3b3..9d02a1fa4c 100644
--- a/indra/llprimitive/CMakeLists.txt
+++ b/indra/llprimitive/CMakeLists.txt
@@ -8,6 +8,7 @@ include(LLCoreHttp)
 include(LLPhysicsExtensions)
 include(LLPrimitive)
 include(GLH)
+include(GLM)
 include(TinyGLTF)
 
 set(llprimitive_SOURCE_FILES
diff --git a/indra/llprimitive/lldaeloader.cpp b/indra/llprimitive/lldaeloader.cpp
index 86385fc1df..a099a07cbd 100644
--- a/indra/llprimitive/lldaeloader.cpp
+++ b/indra/llprimitive/lldaeloader.cpp
@@ -241,7 +241,7 @@ LLModel::EModelStatus load_face_from_dom_triangles(
                                 n[idx[i+norm_offset]*3+2]));
         }
 
-        BOOL found = FALSE;
+        bool found = false;
 
         LLVolumeFace::VertexMapData::PointMap::iterator point_iter;
         point_iter = point_map.find(LLVector3(cv.getPosition().getF32ptr()));
@@ -258,7 +258,7 @@ LLModel::EModelStatus load_face_from_dom_triangles(
 
                     // Don't share verts within the same tri, degenerate
                     //
-                    U32 indx_size = indices.size();
+                    U32 indx_size = static_cast<U32>(indices.size());
                     U32 verts_new_tri = indx_size % 3;
                     if ((verts_new_tri < 1 || indices[indx_size - 1] != shared_index)
                         && (verts_new_tri < 2 || indices[indx_size - 2] != shared_index))
@@ -496,7 +496,7 @@ LLModel::EModelStatus load_face_from_dom_polylist(
 
             cur_idx += idx_stride;
 
-            BOOL found = FALSE;
+            bool found = false;
 
             LLVolumeFace::VertexMapData::PointMap::iterator point_iter;
             LLVector3 pos3(cv.getPosition().getF32ptr());
@@ -508,7 +508,7 @@ LLModel::EModelStatus load_face_from_dom_polylist(
                 {
                     if ((point_iter->second)[k] == cv)
                     {
-                        found = TRUE;
+                        found = true;
                         U32 index = (point_iter->second)[k].mIndex;
                         if (j == 0)
                         {
@@ -732,7 +732,7 @@ LLModel::EModelStatus load_face_from_dom_polygons(std::vector<LLVolumeFace>& fac
         { //for each vertex
             if (j > 2)
             {
-                U32 size = verts.size();
+                auto size = verts.size();
                 LLVolumeFace::VertexData v0 = verts[size-3];
                 LLVolumeFace::VertexData v1 = verts[size-1];
 
@@ -1008,9 +1008,9 @@ bool LLDAELoader::OpenFile(const std::string& filename)
 
     //Verify some basic properties of the dae
     //1. Basic validity check on controller
-    U32 controllerCount = (int) db->getElementCount( NULL, "controller" );
+    U32 controllerCount = db->getElementCount(NULL, "controller");
     bool result = false;
-    for ( int i=0; i<controllerCount; ++i )
+    for (U32 i = 0; i < controllerCount; ++i)
     {
         domController* pController = NULL;
         db->getElement( (daeElement**) &pController, i , NULL, "controller" );
@@ -1106,7 +1106,7 @@ bool LLDAELoader::OpenFile(const std::string& filename)
     while (model_iter != mModelList.end())
     {
         LLModel* mdl = *model_iter;
-        U32 material_count = mdl->mMaterialList.size();
+        U32 material_count = static_cast<U32>(mdl->mMaterialList.size());
         LL_INFOS() << "Importing " << mdl->mLabel << " model with " << material_count << " material references" << LL_ENDL;
         std::vector<std::string>::iterator mat_iter = mdl->mMaterialList.begin();
         std::vector<std::string>::iterator end_iter = material_count > LIMIT_MATERIALS_OUTPUT
@@ -1261,7 +1261,7 @@ void LLDAELoader::processDomModel(LLModel* model, DAE* dae, daeElement* root, do
         //Some collada setup for accessing the skeleton
         U32 skeleton_count = dae->getDatabase()->getElementCount( NULL, "skeleton" );
         std::vector<domInstance_controller::domSkeleton*> skeletons;
-        for (S32 i=0; i<skeleton_count; i++)
+        for (U32 i = 0; i < skeleton_count; i++)
         {
             daeElement* pElement = 0;
             dae->getDatabase()->getElement( &pElement, i, 0, "skeleton" );
@@ -1293,11 +1293,11 @@ void LLDAELoader::processDomModel(LLModel* model, DAE* dae, daeElement* root, do
             {
                 //Get the children at this level
                 daeTArray< daeSmartRef<daeElement> > children = pScene->getChildren();
-                S32 childCount = children.getCount();
+                auto childCount = children.getCount();
 
                 //Process any children that are joints
                 //Not all children are joints, some could be ambient lights, cameras, geometry etc..
-                for (S32 i = 0; i < childCount; ++i)
+                for (size_t i = 0; i < childCount; ++i)
                 {
                     domNode* pNode = daeSafeCast<domNode>(children[i]);
                     if (pNode)
@@ -1319,7 +1319,7 @@ void LLDAELoader::processDomModel(LLModel* model, DAE* dae, daeElement* root, do
                 if ( pSkeletonRootNode )
                 {
                     //Once we have the root node - start acccessing it's joint components
-                    const int jointCnt = mJointMap.size();
+                    const int jointCnt = static_cast<int>(mJointMap.size());
                     JointMap :: const_iterator jointIt = mJointMap.begin();
 
                     //Loop over all the possible joints within the .dae - using the allowed joint list in the ctor.
@@ -1461,9 +1461,9 @@ void LLDAELoader::processDomModel(LLModel* model, DAE* dae, daeElement* root, do
                     if (t)
                     {
                         domListOfFloats& transform = t->getValue();
-                        S32 count = transform.getCount()/16;
+                        auto count = transform.getCount()/16;
 
-                        for (S32 k = 0; k < count; ++k)
+                        for (size_t k = 0; k < count; ++k)
                         {
                             LLMatrix4 mat;
 
@@ -1539,7 +1539,7 @@ void LLDAELoader::processDomModel(LLModel* model, DAE* dae, daeElement* root, do
         //with the skeleton are not stored in the same order as they are in the exported joint buffer.
         //This remaps the skeletal joints to be in the same order as the joints stored in the model.
         std::vector<std::string> :: const_iterator jointIt  = model->mSkinInfo.mJointNames.begin();
-        const int jointCnt = model->mSkinInfo.mJointNames.size();
+        const int jointCnt = static_cast<int>(model->mSkinInfo.mJointNames.size());
         for ( int i=0; i<jointCnt; ++i, ++jointIt )
         {
             std::string lookingForJoint = (*jointIt).c_str();
@@ -1558,7 +1558,7 @@ void LLDAELoader::processDomModel(LLModel* model, DAE* dae, daeElement* root, do
             }
         }
 
-        U32 bind_count = model->mSkinInfo.mAlternateBindMatrix.size();
+        auto bind_count = model->mSkinInfo.mAlternateBindMatrix.size();
         if (bind_count > 0 && bind_count != jointCnt)
         {
             LL_WARNS("Mesh") << "Model " << model->mLabel << " has invalid joint bind matrix list." << LL_ENDL;
@@ -1707,8 +1707,8 @@ void LLDAELoader::buildJointToNodeMappingFromScene( daeElement* pRoot )
     if ( pScene )
     {
         daeTArray< daeSmartRef<daeElement> > children = pScene->getChildren();
-        S32 childCount = children.getCount();
-        for (S32 i = 0; i < childCount; ++i)
+        auto childCount = children.getCount();
+        for (size_t i = 0; i < childCount; ++i)
         {
             domNode* pNode = daeSafeCast<domNode>(children[i]);
             processJointToNodeMapping( pNode );
@@ -1753,8 +1753,8 @@ void LLDAELoader::processJointToNodeMapping( domNode* pNode )
 void LLDAELoader::processChildJoints( domNode* pParentNode )
 {
     daeTArray< daeSmartRef<daeElement> > childOfChild = pParentNode->getChildren();
-    S32 childOfChildCount = childOfChild.getCount();
-    for (S32 i = 0; i < childOfChildCount; ++i)
+    auto childOfChildCount = childOfChild.getCount();
+    for (size_t i = 0; i < childOfChildCount; ++i)
     {
         domNode* pChildNode = daeSafeCast<domNode>( childOfChild[i] );
         if ( pChildNode )
@@ -1855,7 +1855,7 @@ bool LLDAELoader::verifyController( domController* pController )
             {
                 sum += pVertexWeights->getVcount()->getValue()[i];
             }
-            result = verifyCount( sum * inputs.getCount(), (domInt) pVertexWeights->getV()->getValue().getCount() );
+            result = verifyCount( sum * static_cast<U32>(inputs.getCount()), (domInt) static_cast<int>(pVertexWeights->getV()->getValue().getCount()) );
         }
     }
 
@@ -1988,9 +1988,9 @@ void LLDAELoader::processJointNode( domNode* pNode, JointTransformMap& jointTran
 
     //Gather and handle the incoming nodes children
     daeTArray< daeSmartRef<daeElement> > childOfChild = pNode->getChildren();
-    S32 childOfChildCount = childOfChild.getCount();
+    auto childOfChildCount = childOfChild.getCount();
 
-    for (S32 i = 0; i < childOfChildCount; ++i)
+    for (size_t i = 0; i < childOfChildCount; ++i)
     {
         domNode* pChildNode = daeSafeCast<domNode>( childOfChild[i] );
         if ( pChildNode )
@@ -2192,8 +2192,8 @@ void LLDAELoader::processElement( daeElement* element, bool& badElement, DAE* da
 
     //process children
     daeTArray< daeSmartRef<daeElement> > children = element->getChildren();
-    int childCount = children.getCount();
-    for (S32 i = 0; i < childCount; i++)
+    auto childCount = children.getCount();
+    for (size_t i = 0; i < childCount; i++)
     {
         processElement(children[i],badElement, dae);
     }
@@ -2264,7 +2264,7 @@ std::map<std::string, LLImportMaterial> LLDAELoader::getMaterials(LLModel* model
 LLImportMaterial LLDAELoader::profileToMaterial(domProfile_COMMON* material, DAE* dae)
 {
     LLImportMaterial mat;
-    mat.mFullbright = FALSE;
+    mat.mFullbright = false;
 
     daeElement* diffuse = material->getDescendant("diffuse");
     if (diffuse)
@@ -2349,7 +2349,7 @@ LLImportMaterial LLDAELoader::profileToMaterial(domProfile_COMMON* material, DAE
         LLColor4 emission_color = getDaeColor(emission);
         if (((emission_color[0] + emission_color[1] + emission_color[2]) / 3.0) > 0.25)
         {
-            mat.mFullbright = TRUE;
+            mat.mFullbright = true;
         }
     }
 
@@ -2568,7 +2568,7 @@ bool LLDAELoader::loadModelsFromDomMesh(domMesh* mesh, std::vector<LLModel*>& mo
             ret->remapVolumeFaces();
         }
 
-        volume_faces = remainder.size();
+        volume_faces = static_cast<U32>(remainder.size());
 
         models_out.push_back(ret);
 
diff --git a/indra/llprimitive/llgltfloader.cpp b/indra/llprimitive/llgltfloader.cpp
index 810b648f17..776f81cc01 100644
--- a/indra/llprimitive/llgltfloader.cpp
+++ b/indra/llprimitive/llgltfloader.cpp
@@ -231,7 +231,7 @@ bool LLGLTFLoader::parseMaterials()
         image.numChannels     = in_image.component;
         image.bytesPerChannel = in_image.bits >> 3;     // Convert bits to bytes
         image.pixelType       = in_image.pixel_type;    // Maps exactly, i.e. TINYGLTF_COMPONENT_TYPE_UNSIGNED_BYTE == GL_UNSIGNED_BYTE, etc
-        image.size            = in_image.image.size();
+        image.size            = static_cast<U32>(in_image.image.size());
         image.height          = in_image.height;
         image.width           = in_image.width;
         image.data            = in_image.image.data();
diff --git a/indra/llprimitive/llgltfmaterial.cpp b/indra/llprimitive/llgltfmaterial.cpp
index 034017e3f3..e8c9af5ea3 100644
--- a/indra/llprimitive/llgltfmaterial.cpp
+++ b/indra/llprimitive/llgltfmaterial.cpp
@@ -47,16 +47,58 @@ const char* const LLGLTFMaterial::GLTF_FILE_EXTENSION_TRANSFORM_ROTATION = "rota
 // special UUID that indicates a null UUID in override data
 const LLUUID LLGLTFMaterial::GLTF_OVERRIDE_NULL_UUID = LLUUID("ffffffff-ffff-ffff-ffff-ffffffffffff");
 
-void LLGLTFMaterial::TextureTransform::getPacked(F32 (&packed)[8]) const
+LLGLTFMaterial::LLGLTFMaterial()
+{
+    // IMPORTANT: since we use the hash of the member variables memory block of
+    // this class to detect changes, we must ensure that all its padding bytes
+    // have been zeroed out. But of course, we must leave the LLRefCount member
+    // variable untouched (and skip it when hashing), and we cannot either
+    // touch the local texture overrides map (else we destroy pointers, and
+    // sundry private data, which would lead to a crash when using that map).
+    // The variable members have therefore been arranged so that anything,
+    // starting at mLocalTexDataDigest and up to the end of the members, can be
+    // safely zeroed. HB
+    const size_t offset = intptr_t(&mLocalTexDataDigest) - intptr_t(this);
+    memset((void*)((const char*)this + offset), 0, sizeof(*this) - offset);
+
+    // Now that we zeroed out our member variables, we can set the ones that
+    // should not be zero to their default value. HB
+    mBaseColor.set(1.f, 1.f, 1.f, 1.f);
+    mMetallicFactor = mRoughnessFactor = 1.f;
+    mAlphaCutoff = 0.5f;
+    for (U32 i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
+    {
+        mTextureTransform[i].mScale.set(1.f, 1.f);
+#if 0
+        mTextureTransform[i].mOffset.clear();
+        mTextureTransform[i].mRotation = 0.f;
+#endif
+    }
+#if 0
+    mLocalTexDataDigest = 0;
+    mAlphaMode = ALPHA_MODE_OPAQUE;    // This is 0
+    mOverrideDoubleSided = mOverrideAlphaMode = false;
+#endif
+}
+
+void LLGLTFMaterial::TextureTransform::getPacked(Pack& packed) const
 {
     packed[0] = mScale.mV[VX];
     packed[1] = mScale.mV[VY];
     packed[2] = mRotation;
-    // packed[3] = unused
     packed[4] = mOffset.mV[VX];
     packed[5] = mOffset.mV[VY];
-    // packed[6] = unused
-    // packed[7] = unused
+    // Not used but nonetheless zeroed for proper hashing. HB
+    packed[3] = packed[6] = packed[7] = 0.f;
+}
+
+void LLGLTFMaterial::TextureTransform::getPackedTight(PackTight& packed) const
+{
+    packed[0] = mScale.mV[VX];
+    packed[1] = mScale.mV[VY];
+    packed[2] = mRotation;
+    packed[3] = mOffset.mV[VX];
+    packed[4] = mOffset.mV[VY];
 }
 
 bool LLGLTFMaterial::TextureTransform::operator==(const TextureTransform& other) const
@@ -89,13 +131,37 @@ LLGLTFMaterial& LLGLTFMaterial::operator=(const LLGLTFMaterial& rhs)
     mOverrideDoubleSided = rhs.mOverrideDoubleSided;
     mOverrideAlphaMode = rhs.mOverrideAlphaMode;
 
-    mTrackingIdToLocalTexture = rhs.mTrackingIdToLocalTexture;
-
-    updateTextureTracking();
+    if (rhs.mTrackingIdToLocalTexture.empty())
+    {
+        mTrackingIdToLocalTexture.clear();
+        mLocalTexDataDigest = 0;
+    }
+    else
+    {
+        mTrackingIdToLocalTexture = rhs.mTrackingIdToLocalTexture;
+        updateLocalTexDataDigest();
+        updateTextureTracking();
+    }
 
     return *this;
 }
 
+void LLGLTFMaterial::updateLocalTexDataDigest()
+{
+    mLocalTexDataDigest = 0;
+    if (!mTrackingIdToLocalTexture.empty())
+    {
+        for (local_tex_map_t::const_iterator
+                it = mTrackingIdToLocalTexture.begin(),
+                end = mTrackingIdToLocalTexture.end();
+             it != end; ++it)
+        {
+            mLocalTexDataDigest ^= it->first.getDigest64() ^
+                                   it->second.getDigest64();
+        }
+    }
+}
+
 bool LLGLTFMaterial::operator==(const LLGLTFMaterial& rhs) const
 {
     return mTextureId == rhs.mTextureId &&
@@ -123,7 +189,7 @@ bool LLGLTFMaterial::fromJSON(const std::string& json, std::string& warn_msg, st
 
     tinygltf::Model model_in;
 
-    if (gltf.LoadASCIIFromString(&model_in, &error_msg, &warn_msg, json.c_str(), json.length(), ""))
+    if (gltf.LoadASCIIFromString(&model_in, &error_msg, &warn_msg, json.c_str(), static_cast<unsigned int>(json.length()), ""))
     {
         setFromModel(model_in, 0);
 
@@ -547,7 +613,7 @@ void LLGLTFMaterial::applyOverride(const LLGLTFMaterial& override_mat)
 {
     LL_PROFILE_ZONE_SCOPED;
 
-    for (int i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
+    for (U32 i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
     {
         LLUUID& texture_id = mTextureId[i];
         const LLUUID& override_texture_id = override_mat.mTextureId[i];
@@ -588,7 +654,7 @@ void LLGLTFMaterial::applyOverride(const LLGLTFMaterial& override_mat)
         mDoubleSided = override_mat.mDoubleSided;
     }
 
-    for (int i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
+    for (U32 i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
     {
         if (override_mat.mTextureTransform[i].mOffset != getDefaultTextureOffset())
         {
@@ -606,21 +672,25 @@ void LLGLTFMaterial::applyOverride(const LLGLTFMaterial& override_mat)
         }
     }
 
-    mTrackingIdToLocalTexture.insert(override_mat.mTrackingIdToLocalTexture.begin(), override_mat.mTrackingIdToLocalTexture.begin());
-
-    updateTextureTracking();
+    if (!override_mat.mTrackingIdToLocalTexture.empty())
+    {
+        auto it = override_mat.mTrackingIdToLocalTexture.begin();
+        mTrackingIdToLocalTexture.insert(it, it);
+        updateLocalTexDataDigest();
+        updateTextureTracking();
+    }
 }
 
-void LLGLTFMaterial::getOverrideLLSD(const LLGLTFMaterial& override_mat, LLSD& data)
+void LLGLTFMaterial::getOverrideLLSD(const LLGLTFMaterial& override_mat, LLSD& data) const
 {
     LL_PROFILE_ZONE_SCOPED;
     llassert(data.isUndefined());
 
     // make every effort to shave bytes here
 
-    for (int i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
+    for (U32 i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
     {
-        LLUUID& texture_id = mTextureId[i];
+        const LLUUID& texture_id = mTextureId[i];
         const LLUUID& override_texture_id = override_mat.mTextureId[i];
         if (override_texture_id.notNull() && override_texture_id != texture_id)
         {
@@ -663,7 +733,7 @@ void LLGLTFMaterial::getOverrideLLSD(const LLGLTFMaterial& override_mat, LLSD& d
         data["ds"] = override_mat.mDoubleSided;
     }
 
-    for (int i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
+    for (U32 i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
     {
         if (override_mat.mTextureTransform[i].mOffset != getDefaultTextureOffset())
         {
@@ -767,7 +837,7 @@ void LLGLTFMaterial::applyOverrideLLSD(const LLSD& data)
     const LLSD& ti = data["ti"];
     if (ti.isArray())
     {
-        for (int i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
+        for (U32 i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
         {
             const LLSD& o = ti[i]["o"];
             if (o.isDefined())
@@ -793,27 +863,36 @@ void LLGLTFMaterial::applyOverrideLLSD(const LLSD& data)
 LLUUID LLGLTFMaterial::getHash() const
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
-    // HACK - hash the bytes of this object but don't include the ref count
-    LLUUID hash;
-    HBXXH128::digest(hash, (unsigned char*)this + sizeof(LLRefCount), sizeof(*this) - sizeof(LLRefCount));
-    return hash;
+    // *HACK: hash the bytes of this object but do not include the ref count
+    // neither the local texture overrides (which is a map, with pointers to
+    // key/value pairs that would change from one LLGLTFMaterial instance to
+    // the other, even though the key/value pairs could be the same, and stored
+    // elsewhere in the memory heap or on the stack).
+    // Note: this does work properly to compare two LLGLTFMaterial instances
+    // only because the padding bytes between their member variables have been
+    // dutifully zeroed in the constructor. HB
+    const size_t offset = intptr_t(&mLocalTexDataDigest) - intptr_t(this);
+    return HBXXH128::digest((const void*)((const char*)this + offset),
+                            sizeof(*this) - offset);
 }
 
 void LLGLTFMaterial::addLocalTextureTracking(const LLUUID& tracking_id, const LLUUID& tex_id)
 {
     mTrackingIdToLocalTexture[tracking_id] = tex_id;
+    updateLocalTexDataDigest();
 }
 
 void LLGLTFMaterial::removeLocalTextureTracking(const LLUUID& tracking_id)
 {
     mTrackingIdToLocalTexture.erase(tracking_id);
+    updateLocalTexDataDigest();
 }
 
 bool LLGLTFMaterial::replaceLocalTexture(const LLUUID& tracking_id, const LLUUID& old_id, const LLUUID& new_id)
 {
     bool res = false;
 
-    for (int i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
+    for (U32 i = 0; i < GLTF_TEXTURE_INFO_COUNT; ++i)
     {
         if (mTextureId[i] == old_id)
         {
@@ -834,6 +913,7 @@ bool LLGLTFMaterial::replaceLocalTexture(const LLUUID& tracking_id, const LLUUID
     {
         mTrackingIdToLocalTexture.erase(tracking_id);
     }
+    updateLocalTexDataDigest();
 
     return res;
 }
diff --git a/indra/llprimitive/llgltfmaterial.h b/indra/llprimitive/llgltfmaterial.h
index 3726bf2a28..b89853c9fd 100644
--- a/indra/llprimitive/llgltfmaterial.h
+++ b/indra/llprimitive/llgltfmaterial.h
@@ -5,21 +5,21 @@
  * $LicenseInfo:firstyear=2022&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2022, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -69,7 +69,12 @@ public:
         LLVector2 mScale = { 1.f, 1.f };
         F32 mRotation = 0.f;
 
-        void getPacked(F32 (&packed)[8]) const;
+        static const size_t PACK_SIZE = 8;
+        static const size_t PACK_TIGHT_SIZE = 5;
+        using Pack = F32[PACK_SIZE];
+        using PackTight = F32[PACK_TIGHT_SIZE];
+        void getPacked(Pack& packed) const;
+        void getPackedTight(PackTight& packed) const;
 
         bool operator==(const TextureTransform& other) const;
         bool operator!=(const TextureTransform& other) const { return !(*this == other); }
@@ -82,7 +87,7 @@ public:
         ALPHA_MODE_MASK
     };
 
-    LLGLTFMaterial() {}
+    LLGLTFMaterial();
     LLGLTFMaterial(const LLGLTFMaterial& rhs);
 
     LLGLTFMaterial& operator=(const LLGLTFMaterial& rhs);
@@ -111,42 +116,6 @@ public:
     static const char* const GLTF_FILE_EXTENSION_TRANSFORM_ROTATION;
     static const LLUUID GLTF_OVERRIDE_NULL_UUID;
 
-    std::array<LLUUID, GLTF_TEXTURE_INFO_COUNT> mTextureId;
-    std::array<TextureTransform, GLTF_TEXTURE_INFO_COUNT> mTextureTransform;
-
-    // NOTE: initialize values to defaults according to the GLTF spec
-    // NOTE: these values should be in linear color space
-    LLColor4 mBaseColor = LLColor4(1, 1, 1, 1);
-    LLColor3 mEmissiveColor = LLColor3(0, 0, 0);
-
-    F32 mMetallicFactor = 1.f;
-    F32 mRoughnessFactor = 1.f;
-    F32 mAlphaCutoff = 0.5f;
-
-    AlphaMode mAlphaMode = ALPHA_MODE_OPAQUE;
-
-    bool mDoubleSided = false;
-
-    // override specific flags for state that can't use off-by-epsilon or UUID hack
-    bool mOverrideDoubleSided = false;
-    bool mOverrideAlphaMode = false;
-
-    // *TODO: If/when we implement additional GLTF extensions, they may not be
-    // compatible with our GLTF terrain implementation. We may want to disallow
-    // materials with some features from being set on terrain, if their
-    // implementation on terrain is not compliant with the spec:
-    //     - KHR_materials_transmission: Probably OK?
-    //     - KHR_materials_ior: Probably OK?
-    //     - KHR_materials_volume: Likely incompatible, as our terrain
-    //       heightmaps cannot currently be described as finite enclosed
-    //       volumes.
-    // See also LLPanelRegionTerrainInfo::validateMaterials
-    // These fields are local to viewer and are a part of local bitmap support
-    typedef std::map<LLUUID, LLUUID> local_tex_map_t;
-    local_tex_map_t                  mTrackingIdToLocalTexture;
-
-public:
-
     // get a UUID based on a hash of this LLGLTFMaterial
     LLUUID getHash() const;
 
@@ -215,14 +184,14 @@ public:
     void writeToModel(tinygltf::Model& model, S32 mat_index) const;
 
     virtual void applyOverride(const LLGLTFMaterial& override_mat);
-    
+
     // apply the given LLSD override data
     void applyOverrideLLSD(const LLSD& data);
 
     // Get the given override on this LLGLTFMaterial as LLSD
     // override_mat -- the override source data
     // data -- output LLSD object (should be passed in empty)
-    void getOverrideLLSD(const LLGLTFMaterial& override_mat, LLSD& data);
+    void getOverrideLLSD(const LLGLTFMaterial& override_mat, LLSD& data) const;
 
     // For base materials only (i.e. assets). Clears transforms to
     // default since they're not supported in assets yet.
@@ -246,7 +215,6 @@ public:
     bool hasLocalTextures() { return !mTrackingIdToLocalTexture.empty(); }
     virtual bool replaceLocalTexture(const LLUUID& tracking_id, const LLUUID &old_id, const LLUUID& new_id);
     virtual void updateTextureTracking();
-
 protected:
     static LLVector2 vec2FromJson(const std::map<std::string, tinygltf::Value>& object, const char* key, const LLVector2& default_value);
     static F32 floatFromJson(const std::map<std::string, tinygltf::Value>& object, const char* key, const F32 default_value);
@@ -263,4 +231,49 @@ protected:
     void writeToTexture(tinygltf::Model& model, T& texture_info, TextureInfo texture_info_id, bool force_write = false) const;
     template<typename T>
     static void writeToTexture(tinygltf::Model& model, T& texture_info, const LLUUID& texture_id, const TextureTransform& transform, bool force_write = false);
+
+    // Used to update the digest of the mTrackingIdToLocalTexture map each time
+    // it is changed; this way, that digest can be used by the fast getHash()
+    // method intsead of having to hash all individual keys and values. HB
+    void updateLocalTexDataDigest();
+
+public:
+    // *TODO: If/when we implement additional GLTF extensions, they may not be
+    // compatible with our GLTF terrain implementation. We may want to disallow
+    // materials with some features from being set on terrain, if their
+    // implementation on terrain is not compliant with the spec:
+    //     - KHR_materials_transmission: Probably OK?
+    //     - KHR_materials_ior: Probably OK?
+    //     - KHR_materials_volume: Likely incompatible, as our terrain
+    //       heightmaps cannot currently be described as finite enclosed
+    //       volumes.
+    // See also LLPanelRegionTerrainInfo::validateMaterials
+    // These fields are local to viewer and are a part of local bitmap support
+    typedef std::map<LLUUID, LLUUID> local_tex_map_t;
+    local_tex_map_t mTrackingIdToLocalTexture;
+
+    // Used to store a digest of mTrackingIdToLocalTexture when the latter is
+    // not empty, or zero otherwise. HB
+    U64 mLocalTexDataDigest;
+
+    std::array<LLUUID, GLTF_TEXTURE_INFO_COUNT> mTextureId;
+    std::array<TextureTransform, GLTF_TEXTURE_INFO_COUNT> mTextureTransform;
+
+    // NOTE: initialize values to defaults according to the GLTF spec
+    // NOTE: these values should be in linear color space
+    LLColor4 mBaseColor;
+    LLColor3 mEmissiveColor;
+
+    F32 mMetallicFactor;
+    F32 mRoughnessFactor;
+    F32 mAlphaCutoff;
+
+    AlphaMode mAlphaMode;
+
+    bool mDoubleSided = false;
+
+    // Override specific flags for state that can't use off-by-epsilon or UUID
+    // hack
+    bool mOverrideDoubleSided = false;
+    bool mOverrideAlphaMode = false;
 };
diff --git a/indra/llprimitive/llgltfmaterial_templates.h b/indra/llprimitive/llgltfmaterial_templates.h
index 276cc71b19..4ec7f312af 100644
--- a/indra/llprimitive/llgltfmaterial_templates.h
+++ b/indra/llprimitive/llgltfmaterial_templates.h
@@ -87,12 +87,12 @@ void LLGLTFMaterial::setFromTexture(const tinygltf::Model& model, const T& textu
 template<typename T>
 void LLGLTFMaterial::allocateTextureImage(tinygltf::Model& model, T& texture_info, const std::string& uri)
 {
-    const S32 image_idx = model.images.size();
+    const S32 image_idx = static_cast<S32>(model.images.size());
     model.images.emplace_back();
     model.images[image_idx].uri = uri;
 
     // The texture, not to be confused with the texture info
-    const S32 texture_idx = model.textures.size();
+    const S32 texture_idx = static_cast<S32>(model.textures.size());
     model.textures.emplace_back();
     tinygltf::Texture& texture = model.textures[texture_idx];
     texture.source = image_idx;
diff --git a/indra/llprimitive/llmaterial.cpp b/indra/llprimitive/llmaterial.cpp
index 0453a8f469..fe1587d197 100644
--- a/indra/llprimitive/llmaterial.cpp
+++ b/indra/llprimitive/llmaterial.cpp
@@ -427,7 +427,7 @@ bool LLMaterial::operator != (const LLMaterial& rhs) const
 }
 
 
-U32 LLMaterial::getShaderMask(U32 alpha_mode, BOOL is_alpha)
+U32 LLMaterial::getShaderMask(U32 alpha_mode, bool is_alpha)
 { //NEVER incorporate this value into the message system -- this function will vary depending on viewer implementation
 
     //two least significant bits are "diffuse alpha mode"
diff --git a/indra/llprimitive/llmaterial.h b/indra/llprimitive/llmaterial.h
index c6bd5a94ce..a7719c1475 100644
--- a/indra/llprimitive/llmaterial.h
+++ b/indra/llprimitive/llmaterial.h
@@ -122,7 +122,7 @@ public:
     bool        operator == (const LLMaterial& rhs) const;
     bool        operator != (const LLMaterial& rhs) const;
 
-    U32         getShaderMask(U32 alpha_mode, BOOL is_alpha);
+    U32         getShaderMask(U32 alpha_mode, bool is_alpha);
     LLUUID      getHash() const;
 
 protected:
diff --git a/indra/llprimitive/llmaterialtable.cpp b/indra/llprimitive/llmaterialtable.cpp
index 344bd49e6d..44c97d63e7 100644
--- a/indra/llprimitive/llmaterialtable.cpp
+++ b/indra/llprimitive/llmaterialtable.cpp
@@ -341,21 +341,21 @@ void LLMaterialTable::initBasicTable()
     }
 }
 
-BOOL LLMaterialTable::add(U8 mcode, const std::string& name, const LLUUID &uuid)
+bool LLMaterialTable::add(U8 mcode, const std::string& name, const LLUUID &uuid)
 {
     LLMaterialInfo *infop;
 
     infop = new LLMaterialInfo(mcode,name,uuid);
-    if (!infop) return FALSE;
+    if (!infop) return false;
 
     // Add at the end so the order in menus matches the order in this
     // file.  JNC 11.30.01
     mMaterialInfoList.push_back(infop);
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLMaterialTable::addCollisionSound(U8 mcode, U8 mcode2, const LLUUID &uuid)
+bool LLMaterialTable::addCollisionSound(U8 mcode, U8 mcode2, const LLUUID &uuid)
 {
     if (mCollisionSoundMatrix && (mcode < LL_MCODE_END) && (mcode2 < LL_MCODE_END))
     {
@@ -365,10 +365,10 @@ BOOL LLMaterialTable::addCollisionSound(U8 mcode, U8 mcode2, const LLUUID &uuid)
             mCollisionSoundMatrix[mcode2 * LL_MCODE_END + mcode] = uuid;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLMaterialTable::addSlidingSound(U8 mcode, U8 mcode2, const LLUUID &uuid)
+bool LLMaterialTable::addSlidingSound(U8 mcode, U8 mcode2, const LLUUID &uuid)
 {
     if (mSlidingSoundMatrix && (mcode < LL_MCODE_END) && (mcode2 < LL_MCODE_END))
     {
@@ -378,10 +378,10 @@ BOOL LLMaterialTable::addSlidingSound(U8 mcode, U8 mcode2, const LLUUID &uuid)
             mSlidingSoundMatrix[mcode2 * LL_MCODE_END + mcode] = uuid;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLMaterialTable::addRollingSound(U8 mcode, U8 mcode2, const LLUUID &uuid)
+bool LLMaterialTable::addRollingSound(U8 mcode, U8 mcode2, const LLUUID &uuid)
 {
     if (mRollingSoundMatrix && (mcode < LL_MCODE_END) && (mcode2 < LL_MCODE_END))
     {
@@ -391,10 +391,10 @@ BOOL LLMaterialTable::addRollingSound(U8 mcode, U8 mcode2, const LLUUID &uuid)
             mRollingSoundMatrix[mcode2 * LL_MCODE_END + mcode] = uuid;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLMaterialTable::addShatterSound(U8 mcode, const LLUUID &uuid)
+bool LLMaterialTable::addShatterSound(U8 mcode, const LLUUID &uuid)
 {
     for (info_list_t::iterator iter = mMaterialInfoList.begin();
          iter != mMaterialInfoList.end(); ++iter)
@@ -403,14 +403,14 @@ BOOL LLMaterialTable::addShatterSound(U8 mcode, const LLUUID &uuid)
         if (mcode == infop->mMCode)
         {
             infop->mShatterSoundID = uuid;
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLMaterialTable::addDensity(U8 mcode, const F32 &density)
+bool LLMaterialTable::addDensity(U8 mcode, const F32 &density)
 {
     for (info_list_t::iterator iter = mMaterialInfoList.begin();
          iter != mMaterialInfoList.end(); ++iter)
@@ -419,14 +419,14 @@ BOOL LLMaterialTable::addDensity(U8 mcode, const F32 &density)
         if (mcode == infop->mMCode)
         {
             infop->mDensity = density;
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLMaterialTable::addRestitution(U8 mcode, const F32 &restitution)
+bool LLMaterialTable::addRestitution(U8 mcode, const F32 &restitution)
 {
     for (info_list_t::iterator iter = mMaterialInfoList.begin();
          iter != mMaterialInfoList.end(); ++iter)
@@ -435,14 +435,14 @@ BOOL LLMaterialTable::addRestitution(U8 mcode, const F32 &restitution)
         if (mcode == infop->mMCode)
         {
             infop->mRestitution = restitution;
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLMaterialTable::addFriction(U8 mcode, const F32 &friction)
+bool LLMaterialTable::addFriction(U8 mcode, const F32 &friction)
 {
     for (info_list_t::iterator iter = mMaterialInfoList.begin();
          iter != mMaterialInfoList.end(); ++iter)
@@ -451,14 +451,14 @@ BOOL LLMaterialTable::addFriction(U8 mcode, const F32 &friction)
         if (mcode == infop->mMCode)
         {
             infop->mFriction = friction;
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLMaterialTable::addDamageAndEnergy(U8 mcode, const F32 &hp_mod, const F32 &damage_mod, const F32 &ep_mod)
+bool LLMaterialTable::addDamageAndEnergy(U8 mcode, const F32 &hp_mod, const F32 &damage_mod, const F32 &ep_mod)
 {
     for (info_list_t::iterator iter = mMaterialInfoList.begin();
          iter != mMaterialInfoList.end(); ++iter)
@@ -469,11 +469,11 @@ BOOL LLMaterialTable::addDamageAndEnergy(U8 mcode, const F32 &hp_mod, const F32
             infop->mHPModifier = hp_mod;
             infop->mDamageModifier = damage_mod;
             infop->mEPModifier = ep_mod;
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 LLUUID LLMaterialTable::getDefaultTextureID(const std::string& name)
diff --git a/indra/llprimitive/llmaterialtable.h b/indra/llprimitive/llmaterialtable.h
index d612361041..7d1d5c7d34 100644
--- a/indra/llprimitive/llmaterialtable.h
+++ b/indra/llprimitive/llmaterialtable.h
@@ -106,15 +106,15 @@ public:
 
     void initTableTransNames(std::map<std::string, std::string> namemap);
 
-    BOOL add(U8 mcode, const std::string& name, const LLUUID &uuid);
-    BOOL addCollisionSound(U8 mcode, U8 mcode2, const LLUUID &uuid);
-    BOOL addSlidingSound(U8 mcode, U8 mcode2, const LLUUID &uuid);
-    BOOL addRollingSound(U8 mcode, U8 mcode2, const LLUUID &uuid);
-    BOOL addShatterSound(U8 mcode, const LLUUID &uuid);
-    BOOL addDensity(U8 mcode, const F32 &density);
-    BOOL addFriction(U8 mcode, const F32 &friction);
-    BOOL addRestitution(U8 mcode, const F32 &restitution);
-    BOOL addDamageAndEnergy(U8 mcode, const F32 &hp_mod, const F32 &damage_mod, const F32 &ep_mod);
+    bool add(U8 mcode, const std::string& name, const LLUUID &uuid);
+    bool addCollisionSound(U8 mcode, U8 mcode2, const LLUUID &uuid);
+    bool addSlidingSound(U8 mcode, U8 mcode2, const LLUUID &uuid);
+    bool addRollingSound(U8 mcode, U8 mcode2, const LLUUID &uuid);
+    bool addShatterSound(U8 mcode, const LLUUID &uuid);
+    bool addDensity(U8 mcode, const F32 &density);
+    bool addFriction(U8 mcode, const F32 &friction);
+    bool addRestitution(U8 mcode, const F32 &restitution);
+    bool addDamageAndEnergy(U8 mcode, const F32 &hp_mod, const F32 &damage_mod, const F32 &ep_mod);
 
     LLUUID getDefaultTextureID(const std::string& name);                    // LLUUID::null if not found
     LLUUID getDefaultTextureID(U8 mcode);                   // LLUUID::null if not found
diff --git a/indra/llprimitive/llmediaentry.cpp b/indra/llprimitive/llmediaentry.cpp
index e626a989f6..b5b17c53aa 100644
--- a/indra/llprimitive/llmediaentry.cpp
+++ b/indra/llprimitive/llmediaentry.cpp
@@ -353,7 +353,7 @@ U32 LLMediaEntry::setWhiteList( const std::vector<std::string> &whitelist )
 {
     // *NOTE: This code is VERY similar to the setWhitelist below.
     // IF YOU CHANGE THIS IMPLEMENTATION, BE SURE TO CHANGE THE OTHER!
-    U32 size = 0;
+    size_t size = 0;
     U32 count = 0;
     // First count to make sure the size constraint is not violated
     std::vector<std::string>::const_iterator iter = whitelist.begin();
@@ -394,7 +394,7 @@ U32 LLMediaEntry::setWhiteList( const LLSD &whitelist )
     {
         // *NOTE: This code is VERY similar to the setWhitelist above.
         // IF YOU CHANGE THIS IMPLEMENTATION, BE SURE TO CHANGE THE OTHER!
-        U32 size = 0;
+        size_t size = 0;
         U32 count = 0;
         // First check to make sure the size and count constraints are not violated
         LLSD::array_const_iterator iter = whitelist.beginArray();
diff --git a/indra/llprimitive/llmodel.cpp b/indra/llprimitive/llmodel.cpp
index d21c6e974a..4a185f8ba9 100644
--- a/indra/llprimitive/llmodel.cpp
+++ b/indra/llprimitive/llmodel.cpp
@@ -50,7 +50,7 @@ std::string model_names[] =
 
 const int MODEL_NAMES_LENGTH = sizeof(model_names) / sizeof(std::string);
 
-LLModel::LLModel(LLVolumeParams& params, F32 detail)
+LLModel::LLModel(const LLVolumeParams& params, F32 detail)
     : LLVolume(params, detail),
       mNormalizedScale(1,1,1),
       mNormalizedTranslation(0, 0, 0),
@@ -106,7 +106,7 @@ void LLModel::offsetMesh(const LLVector3& pivotPoint)
 
 void LLModel::remapVolumeFaces()
 {
-    for (U32 i = 0; i < getNumVolumeFaces(); ++i)
+    for (S32 i = 0; i < getNumVolumeFaces(); ++i)
     {
         mVolumeFaces[i].remap();
     }
@@ -114,7 +114,7 @@ void LLModel::remapVolumeFaces()
 
 void LLModel::optimizeVolumeFaces()
 {
-    for (U32 i = 0; i < getNumVolumeFaces(); ++i)
+    for (S32 i = 0; i < getNumVolumeFaces(); ++i)
     {
         mVolumeFaces[i].optimize();
     }
@@ -169,7 +169,7 @@ void LLModel::trimVolumeFacesToSize(U32 new_count, LLVolume::face_list_t* remain
 {
     llassert(new_count <= LL_SCULPT_MESH_MAX_FACES);
 
-    if (new_count && (getNumVolumeFaces() > new_count))
+    if (new_count > 0 && ((U32)getNumVolumeFaces() > new_count))
     {
         // Copy out remaining volume faces for alternative handling, if provided
         //
@@ -220,7 +220,7 @@ void LLModel::normalizeVolumeFaces()
                 min_tc = face.mTexCoords[0];
                 max_tc = face.mTexCoords[0];
 
-                for (U32 j = 1; j < face.mNumVertices; ++j)
+                for (S32 j = 1; j < face.mNumVertices; ++j)
                 {
                     update_min_max(min_tc, max_tc, face.mTexCoords[j]);
                 }
@@ -295,7 +295,7 @@ void LLModel::normalizeVolumeFaces()
             LLVector4a* norm = (LLVector4a*) face.mNormals;
             LLVector4a* t = (LLVector4a*)face.mTangents;
 
-            for (U32 j = 0; j < face.mNumVertices; ++j)
+            for (S32 j = 0; j < face.mNumVertices; ++j)
             {
                 pos[j].add(trans);
                 pos[j].mul(scale);
@@ -359,7 +359,7 @@ LLVector3 LLModel::getTransformedCenter(const LLMatrix4& mat)
         {
             LLVolumeFace& face = mVolumeFaces[i];
 
-            for (U32 j = 0; j < face.mNumVertices; ++j)
+            for (S32 j = 0; j < face.mNumVertices; ++j)
             {
                 m.affineTransform(face.mPositions[j],t);
                 update_min_max(minv, maxv, t);
@@ -471,7 +471,7 @@ void LLModel::generateNormals(F32 angle_cutoff)
         faceted.resizeVertices(vol_face.mNumIndices);
         faceted.resizeIndices(vol_face.mNumIndices);
         //bake out triangles into temporary face, clearing texture coordinates
-        for (U32 i = 0; i < vol_face.mNumIndices; ++i)
+        for (S32 i = 0; i < vol_face.mNumIndices; ++i)
         {
             U32 idx = vol_face.mIndices[i];
 
@@ -481,7 +481,7 @@ void LLModel::generateNormals(F32 angle_cutoff)
         }
 
         //generate normals for temporary face
-        for (U32 i = 0; i < faceted.mNumIndices; i += 3)
+        for (S32 i = 0; i < faceted.mNumIndices; i += 3)
         { //for each triangle
             U16 i0 = faceted.mIndices[i+0];
             U16 i1 = faceted.mIndices[i+1];
@@ -510,12 +510,12 @@ void LLModel::generateNormals(F32 angle_cutoff)
 
         //generate normals for welded face based on new topology (step 3)
 
-        for (U32 i = 0; i < faceted.mNumVertices; i++)
+        for (S32 i = 0; i < faceted.mNumVertices; i++)
         {
             faceted.mNormals[i].clear();
         }
 
-        for (U32 i = 0; i < faceted.mNumIndices; i += 3)
+        for (S32 i = 0; i < faceted.mNumIndices; i += 3)
         { //for each triangle
             U16 i0 = faceted.mIndices[i+0];
             U16 i1 = faceted.mIndices[i+1];
@@ -544,7 +544,7 @@ void LLModel::generateNormals(F32 angle_cutoff)
         //normalize normals and build point map
         LLVolumeFace::VertexMapData::PointMap point_map;
 
-        for (U32 i = 0; i < faceted.mNumVertices; ++i)
+        for (S32 i = 0; i < faceted.mNumVertices; ++i)
         {
             faceted.mNormals[i].normalize3();
 
@@ -562,7 +562,7 @@ void LLModel::generateNormals(F32 angle_cutoff)
         new_face.resizeIndices(vol_face.mNumIndices);
         new_face.resizeVertices(vol_face.mNumIndices);
 
-        for (U32 i = 0; i < vol_face.mNumIndices; ++i)
+        for (S32 i = 0; i < vol_face.mNumIndices; ++i)
         {
             U32 idx = vol_face.mIndices[i];
             LLVolumeFace::VertexData v;
@@ -573,7 +573,7 @@ void LLModel::generateNormals(F32 angle_cutoff)
 
         if (vol_face.mTexCoords)
         {
-            for (U32 i = 0; i < vol_face.mNumIndices; i++)
+            for (S32 i = 0; i < vol_face.mNumIndices; i++)
             {
                 U32 idx = vol_face.mIndices[i];
                 new_face.mTexCoords[i] = vol_face.mTexCoords[idx];
@@ -586,7 +586,7 @@ void LLModel::generateNormals(F32 angle_cutoff)
         }
 
         //generate normals for new face
-        for (U32 i = 0; i < new_face.mNumIndices; i += 3)
+        for (S32 i = 0; i < new_face.mNumIndices; i += 3)
         { //for each triangle
             U16 i0 = new_face.mIndices[i+0];
             U16 i1 = new_face.mIndices[i+1];
@@ -611,7 +611,7 @@ void LLModel::generateNormals(F32 angle_cutoff)
         }
 
         //swap out normals in new_face with best match from point map (step 5)
-        for (U32 i = 0; i < new_face.mNumVertices; ++i)
+        for (S32 i = 0; i < new_face.mNumVertices; ++i)
         {
             //LLVolumeFace::VertexData v = new_face.mVertices[i];
 
@@ -659,11 +659,11 @@ LLSD LLModel::writeModel(
     LLModel* low,
     LLModel* impostor,
     const LLModel::Decomposition& decomp,
-    BOOL upload_skin,
-    BOOL upload_joints,
-    BOOL lock_scale_if_joint_position,
-    BOOL nowrite,
-    BOOL as_slm,
+    bool upload_skin,
+    bool upload_joints,
+    bool lock_scale_if_joint_position,
+    bool nowrite,
+    bool as_slm,
     int submodel_id)
 {
     LLSD mdl;
@@ -721,7 +721,7 @@ LLSD LLModel::writeModel(
             for (S32 i = 0; i < model[idx]->getNumVolumeFaces(); ++i)
             { //for each face
                 const LLVolumeFace& face = model[idx]->getVolumeFace(i);
-                for (U32 j = 0; j < face.mNumVertices; ++j)
+                for (S32 j = 0; j < face.mNumVertices; ++j)
                 {
                     update_min_max(min_pos, max_pos, face.mPositions[j].getF32ptr());
                 }
@@ -758,7 +758,7 @@ LLSD LLModel::writeModel(
                     max_tc = min_tc;
 
                     //get texture coordinate domain
-                    for (U32 j = 0; j < face.mNumVertices; ++j)
+                    for (S32 j = 0; j < face.mNumVertices; ++j)
                     {
                         update_min_max(min_tc, max_tc, ftc[j]);
                     }
@@ -766,7 +766,7 @@ LLSD LLModel::writeModel(
 
                 LLVector2 tc_range = max_tc - min_tc;
 
-                for (U32 j = 0; j < face.mNumVertices; ++j)
+                for (S32 j = 0; j < face.mNumVertices; ++j)
                 { //for each vert
 
                     F32* pos = face.mPositions[j].getF32ptr();
@@ -836,7 +836,7 @@ LLSD LLModel::writeModel(
                 }
 
                 U32 idx_idx = 0;
-                for (U32 j = 0; j < face.mNumIndices; ++j)
+                for (S32 j = 0; j < face.mNumIndices; ++j)
                 {
                     U8* buff = (U8*) &(face.mIndices[j]);
                     indices[idx_idx++] = buff[0];
@@ -883,7 +883,7 @@ LLSD LLModel::writeModel(
                         // a bone index of 0xFF signifies no more influences for this vertex
 
                         std::stringstream ostr;
-                        for (U32 j = 0; j < face.mNumVertices; ++j)
+                        for (S32 j = 0; j < face.mNumVertices; ++j)
                         {
                             LLVector3 pos(face.mPositions[j].getF32ptr());
 
@@ -914,7 +914,7 @@ LLSD LLModel::writeModel(
                         //copy ostr to binary buffer
                         std::string data = ostr.str();
                         const U8* buff = (U8*)data.data();
-                        U32 bytes = data.size();
+                        U32 bytes = static_cast<U32>(data.size());
 
                         LLSD::Binary w(bytes);
                         for (U32 j = 0; j < bytes; ++j)
@@ -944,7 +944,7 @@ LLSD LLModel::writeModel(
     return writeModelToStream(ostr, mdl, nowrite, as_slm);
 }
 
-LLSD LLModel::writeModelToStream(std::ostream& ostr, LLSD& mdl, BOOL nowrite, BOOL as_slm)
+LLSD LLModel::writeModelToStream(std::ostream& ostr, LLSD& mdl, bool nowrite, bool as_slm)
 {
     std::string::size_type cur_offset = 0;
 
@@ -961,7 +961,7 @@ LLSD LLModel::writeModelToStream(std::ostream& ostr, LLSD& mdl, BOOL nowrite, BO
     { //write out skin block
         skin = zip_llsd(mdl["skin"]);
 
-        U32 size = skin.size();
+        U32 size = static_cast<U32>(skin.size());
         if (size > 0)
         {
             header["skin"]["offset"] = (LLSD::Integer) cur_offset;
@@ -976,7 +976,7 @@ LLSD LLModel::writeModelToStream(std::ostream& ostr, LLSD& mdl, BOOL nowrite, BO
     { //write out convex decomposition
         decomposition = zip_llsd(mdl["physics_convex"]);
 
-        U32 size = decomposition.size();
+        U32 size = static_cast<U32>(decomposition.size());
         if (size > 0)
         {
             header["physics_convex"]["offset"] = (LLSD::Integer) cur_offset;
@@ -998,7 +998,7 @@ LLSD LLModel::writeModelToStream(std::ostream& ostr, LLSD& mdl, BOOL nowrite, BO
         {
             out[i] = zip_llsd(mdl[model_names[i]]);
 
-            U32 size = out[i].size();
+            U32 size = static_cast<U32>(out[i].size());
 
             header[model_names[i]]["offset"] = (LLSD::Integer) cur_offset;
             header[model_names[i]]["size"] = (LLSD::Integer) size;
@@ -1155,7 +1155,7 @@ void LLModel::updateHullCenters()
         mCenterOfHullCenters += cur_center;
         cur_center *= 1.f/mPhysics.mHull[i].size();
         mHullCenter[i] = cur_center;
-        mHullPoints += mPhysics.mHull[i].size();
+        mHullPoints += static_cast<U32>(mPhysics.mHull[i].size());
     }
 
     if (mHullPoints > 0)
@@ -1276,14 +1276,14 @@ bool LLModel::loadModel(std::istream& is)
 
 bool LLModel::isMaterialListSubset( LLModel* ref )
 {
-    int refCnt = ref->mMaterialList.size();
-    int modelCnt = mMaterialList.size();
+    auto refCnt = ref->mMaterialList.size();
+    auto modelCnt = mMaterialList.size();
 
-    for (U32 src = 0; src < modelCnt; ++src)
+    for (size_t src = 0; src < modelCnt; ++src)
     {
         bool foundRef = false;
 
-        for (U32 dst = 0; dst < refCnt; ++dst)
+        for (size_t dst = 0; dst < refCnt; ++dst)
         {
             //LL_INFOS()<<mMaterialList[src]<<" "<<ref->mMaterialList[dst]<<LL_ENDL;
             foundRef = mMaterialList[src] == ref->mMaterialList[dst];
@@ -1626,15 +1626,15 @@ U32 LLMeshSkinInfo::sizeBytes() const
 {
     U32 res = sizeof(LLUUID); // mMeshID
 
-    res += sizeof(std::vector<std::string>) + sizeof(std::string) * mJointNames.size();
+    res += sizeof(std::vector<std::string>) + sizeof(std::string) * static_cast<U32>(mJointNames.size());
     for (U32 i = 0; i < mJointNames.size(); ++i)
     {
-        res += mJointNames[i].size(); // actual size, not capacity
+        res += static_cast<U32>(mJointNames[i].size()); // actual size, not capacity
     }
 
-    res += sizeof(std::vector<S32>) + sizeof(S32) * mJointNums.size();
-    res += sizeof(std::vector<LLMatrix4>) + 16 * sizeof(float) * mInvBindMatrix.size();
-    res += sizeof(std::vector<LLMatrix4>) + 16 * sizeof(float) * mAlternateBindMatrix.size();
+    res += sizeof(std::vector<S32>) + sizeof(S32) * static_cast<U32>(mJointNums.size());
+    res += sizeof(std::vector<LLMatrix4>) + 16 * sizeof(float) * static_cast<U32>(mInvBindMatrix.size());
+    res += sizeof(std::vector<LLMatrix4>) + 16 * sizeof(float) * static_cast<U32>(mAlternateBindMatrix.size());
     res += 16 * sizeof(float); //mBindShapeMatrix
     res += sizeof(float) + 3 * sizeof(bool);
 
@@ -1751,15 +1751,15 @@ U32 LLModel::Decomposition::sizeBytes() const
 {
     U32 res = sizeof(LLUUID); // mMeshID
 
-    res += sizeof(LLModel::convex_hull_decomposition) + sizeof(std::vector<LLVector3>) * mHull.size();
+    res += sizeof(LLModel::convex_hull_decomposition) + sizeof(std::vector<LLVector3>) * static_cast<U32>(mHull.size());
     for (U32 i = 0; i < mHull.size(); ++i)
     {
-        res += mHull[i].size() * sizeof(LLVector3);
+        res += static_cast<U32>(mHull[i].size()) * sizeof(LLVector3);
     }
 
-    res += sizeof(LLModel::hull) + sizeof(LLVector3) * mBaseHull.size();
+    res += sizeof(LLModel::hull) + sizeof(LLVector3) * static_cast<U32>(mBaseHull.size());
 
-    res += sizeof(std::vector<LLModel::PhysicsMesh>) + sizeof(std::vector<LLModel::PhysicsMesh>) * mMesh.size();
+    res += sizeof(std::vector<LLModel::PhysicsMesh>) + sizeof(std::vector<LLModel::PhysicsMesh>) * static_cast<U32>(mMesh.size());
     for (U32 i = 0; i < mMesh.size(); ++i)
     {
         res += mMesh[i].sizeBytes();
@@ -1810,7 +1810,7 @@ LLSD LLModel::Decomposition::asLLSD() const
 
     for (U32 i = 0; i < mHull.size(); ++i)
     {
-        U32 size = mHull[i].size();
+        U32 size = static_cast<U32>(mHull[i].size());
         total += size;
         hulls[i] = (U8) (size);
 
@@ -2011,7 +2011,7 @@ bool ll_is_degenerate(const LLVector4a& a, const LLVector4a& b, const LLVector4a
 
 bool validate_face(const LLVolumeFace& face)
 {
-    for (U32 i = 0; i < face.mNumIndices; ++i)
+    for (S32 i = 0; i < face.mNumIndices; ++i)
     {
         if (face.mIndices[i] >= face.mNumVertices)
         {
diff --git a/indra/llprimitive/llmodel.h b/indra/llprimitive/llmodel.h
index e874586e94..b9c6c9aa24 100644
--- a/indra/llprimitive/llmodel.h
+++ b/indra/llprimitive/llmodel.h
@@ -124,8 +124,8 @@ public:
         U32 sizeBytes() const
         {
             U32 res = sizeof(std::vector<LLVector3>) * 2;
-            res += sizeof(LLVector3) * mPositions.size();
-            res += sizeof(LLVector3) * mNormals.size();
+            res += sizeof(LLVector3) * static_cast<U32>(mPositions.size());
+            res += sizeof(LLVector3) * static_cast<U32>(mNormals.size());
             return res;
         }
     };
@@ -152,7 +152,7 @@ public:
         LLModel::PhysicsMesh mPhysicsShapeMesh;
     };
 
-    LLModel(LLVolumeParams& params, F32 detail);
+    LLModel(const LLVolumeParams& params, F32 detail);
     ~LLModel();
 
     bool loadModel(std::istream& is);
@@ -167,17 +167,17 @@ public:
         LLModel* low,
         LLModel* imposotr,
         const LLModel::Decomposition& decomp,
-        BOOL upload_skin,
-        BOOL upload_joints,
-        BOOL lock_scale_if_joint_position,
-        BOOL nowrite = FALSE,
-        BOOL as_slm = FALSE,
+        bool upload_skin,
+        bool upload_joints,
+        bool lock_scale_if_joint_position,
+        bool nowrite = false,
+        bool as_slm = false,
         int submodel_id = 0);
 
     static LLSD writeModelToStream(
         std::ostream& ostr,
         LLSD& mdl,
-        BOOL nowrite = FALSE, BOOL as_slm = FALSE);
+        bool nowrite = false, bool as_slm = false);
 
     void ClearFacesAndMaterials() { mVolumeFaces.clear(); mMaterialList.clear(); }
 
@@ -258,17 +258,18 @@ public:
         }
     };
 
-
     //Are the doubles the same w/in epsilon specified tolerance
     bool areEqual( double a, double b )
     {
         const float epsilon = 1e-5f;
-        return (fabs((a - b)) < epsilon) ? true : false ;
+        return fabs(a - b) < epsilon;
     }
+
     //Make sure that we return false for any values that are within the tolerance for equivalence
     bool jointPositionalLookup( const LLVector3& a, const LLVector3& b )
     {
-         return ( areEqual( a[0],b[0]) && areEqual( a[1],b[1] ) && areEqual( a[2],b[2]) ) ? true : false;
+        const float epsilon = 1e-5f;
+        return (a - b).length() < epsilon;
     }
 
     //copy of position array for this model -- mPosition[idx].mV[X,Y,Z]
@@ -358,7 +359,7 @@ public:
 protected:
 
     LLUUID      mDiffuseMapID;
-    void*           mOpaqueData;    // allow refs to viewer/platform-specific structs for each material
+    void*       mOpaqueData{ nullptr };    // allow refs to viewer/platform-specific structs for each material
     // currently only stores an LLPointer< LLViewerFetchedTexture > > to
     // maintain refs to textures associated with each material for free
     // ref counting.
@@ -376,7 +377,7 @@ public:
     LLMatrix4 mTransform;
     material_map mMaterial;
 
-    LLModelInstanceBase(LLModel* model, LLMatrix4& transform, material_map& materials)
+    LLModelInstanceBase(LLModel* model, const LLMatrix4& transform, const material_map& materials)
         : mModel(model), mTransform(transform), mMaterial(materials)
     {
     }
@@ -405,7 +406,7 @@ public:
     LLUUID mMeshID;
     S32 mLocalMeshID;
 
-    LLModelInstance(LLModel* model, const std::string& label, LLMatrix4& transform, material_map& materials)
+    LLModelInstance(LLModel* model, const std::string& label, const LLMatrix4& transform, const material_map& materials)
         : LLModelInstanceBase(model, transform, materials), mLabel(label)
     {
         mLocalMeshID = -1;
diff --git a/indra/llprimitive/llmodelloader.cpp b/indra/llprimitive/llmodelloader.cpp
index 6093a41bc1..1a64e6227f 100644
--- a/indra/llprimitive/llmodelloader.cpp
+++ b/indra/llprimitive/llmodelloader.cpp
@@ -471,7 +471,7 @@ bool LLModelLoader::isRigSuitableForJointPositionUpload( const std::vector<std::
 //called in the main thread
 void LLModelLoader::loadTextures()
 {
-    BOOL is_paused = isPaused() ;
+    bool is_paused = isPaused() ;
     pause() ; //pause the loader
 
     for(scene::iterator iter = mScene.begin(); iter != mScene.end(); ++iter)
diff --git a/indra/llprimitive/llprimitive.cpp b/indra/llprimitive/llprimitive.cpp
index 87ee33a701..f6246e283f 100644
--- a/indra/llprimitive/llprimitive.cpp
+++ b/indra/llprimitive/llprimitive.cpp
@@ -115,8 +115,8 @@ const F32 FLEXIBLE_OBJECT_MAX_WIND_SENSITIVITY = 10.0f;
 const F32 FLEXIBLE_OBJECT_MAX_INTERNAL_TENSION_FORCE = 0.99f;
 
 const F32 FLEXIBLE_OBJECT_DEFAULT_LENGTH = 1.0f;
-const BOOL FLEXIBLE_OBJECT_DEFAULT_USING_COLLISION_SPHERE = FALSE;
-const BOOL FLEXIBLE_OBJECT_DEFAULT_RENDERING_COLLISION_SPHERE = FALSE;
+const bool FLEXIBLE_OBJECT_DEFAULT_USING_COLLISION_SPHERE = false;
+const bool FLEXIBLE_OBJECT_DEFAULT_RENDERING_COLLISION_SPHERE = false;
 
 const LLUUID SCULPT_DEFAULT_TEXTURE("be293869-d0d9-0a69-5989-ad27f1946fd4"); // old inverted texture: "7595d345-a24c-e7ef-f0bd-78793792133e";
 
@@ -172,7 +172,7 @@ void LLPrimitive::setVolumeManager( LLVolumeMgr* volume_manager )
 // static
 bool LLPrimitive::cleanupVolumeManager()
 {
-    BOOL res = FALSE;
+    bool res = false;
     if (sVolumeManager)
     {
         res = sVolumeManager->cleanup();
@@ -770,16 +770,16 @@ S32 face_index_from_id(LLFaceID face_ID, const std::vector<LLProfile::Face>& fac
     return -1;
 }
 
-BOOL LLPrimitive::setVolume(const LLVolumeParams &volume_params, const S32 detail, bool unique_volume)
+bool LLPrimitive::setVolume(const LLVolumeParams &volume_params, const S32 detail, bool unique_volume)
 {
     if (NO_LOD == detail)
     {
         // build the new object
         setChanged(GEOMETRY);
         sVolumeManager->unrefVolume(mVolumep);
-        mVolumep = new LLVolume(volume_params, 1, TRUE, TRUE);
+        mVolumep = new LLVolume(volume_params, 1, true, true);
         setNumTEs(mVolumep->getNumFaces());
-        return FALSE;
+        return false;
     }
 
     LLVolume *volumep;
@@ -788,9 +788,9 @@ BOOL LLPrimitive::setVolume(const LLVolumeParams &volume_params, const S32 detai
         F32 volume_detail = LLVolumeLODGroup::getVolumeScaleFromDetail(detail);
         if (mVolumep.notNull() && volume_params == mVolumep->getParams() && (volume_detail == mVolumep->getDetail()))
         {
-            return FALSE;
+            return false;
         }
-        volumep = new LLVolume(volume_params, volume_detail, FALSE, TRUE);
+        volumep = new LLVolume(volume_params, volume_detail, false, true);
     }
     else
     {
@@ -799,7 +799,7 @@ BOOL LLPrimitive::setVolume(const LLVolumeParams &volume_params, const S32 detai
             F32 volume_detail = LLVolumeLODGroup::getVolumeScaleFromDetail(detail);
             if (volume_params == mVolumep->getParams() && (volume_detail == mVolumep->getDetail()))
             {
-                return FALSE;
+                return false;
             }
         }
 
@@ -807,7 +807,7 @@ BOOL LLPrimitive::setVolume(const LLVolumeParams &volume_params, const S32 detai
         if (volumep == mVolumep)
         {
             sVolumeManager->unrefVolume( volumep );  // LLVolumeMgr::refVolume() creates a reference, but we don't need a second one.
-            return TRUE;
+            return true;
         }
     }
 
@@ -819,7 +819,7 @@ BOOL LLPrimitive::setVolume(const LLVolumeParams &volume_params, const S32 detai
         mVolumep = volumep;
         //mFaceMask = mVolumep->generateFaceMask();
         setNumTEs(mVolumep->getNumFaces());
-        return TRUE;
+        return true;
     }
 
 #if 0
@@ -871,14 +871,14 @@ BOOL LLPrimitive::setVolume(const LLVolumeParams &volume_params, const S32 detai
     if (old_face_mask == new_face_mask)
     {
         // nothing to do
-        return TRUE;
+        return true;
     }
 
     if (mVolumep->getNumFaces() == 0 && new_face_mask != 0)
     {
         LL_WARNS() << "Object with 0 faces found...INCORRECT!" << LL_ENDL;
         setNumTEs(mVolumep->getNumFaces());
-        return TRUE;
+        return true;
     }
 
     // initialize face_mapping
@@ -1030,19 +1030,19 @@ BOOL LLPrimitive::setVolume(const LLVolumeParams &volume_params, const S32 detai
 
     setNumTEs(mVolumep->getNumFaces());
 #endif
-    return TRUE;
+    return true;
 }
 
-BOOL LLPrimitive::setMaterial(U8 material)
+bool LLPrimitive::setMaterial(U8 material)
 {
     if (material != mMaterial)
     {
         mMaterial = material;
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -1058,12 +1058,12 @@ S32 LLPrimitive::packTEField(U8 *cur_ptr, U8 *data_ptr, U8 data_size, U8 last_fa
 
     for (face_index = last_face_index-1; face_index >= 0; face_index--)
     {
-        BOOL already_sent = FALSE;
+        bool already_sent = false;
         for (i = face_index+1; i <= last_face_index; i++)
         {
             if (!memcmp(data_ptr+(data_size *face_index), data_ptr+(data_size *i), data_size))
             {
-                already_sent = TRUE;
+                already_sent = true;
                 break;
             }
         }
@@ -1201,7 +1201,7 @@ namespace
 // Pack information about all texture entries into container:
 // { TextureEntry Variable 2 }
 // Includes information about image ID, color, scale S,T, offset S,T and rotation
-BOOL LLPrimitive::packTEMessage(LLMessageSystem *mesgsys) const
+bool LLPrimitive::packTEMessage(LLMessageSystem *mesgsys) const
 {
     const U32 MAX_TES = 45;
 
@@ -1282,11 +1282,11 @@ BOOL LLPrimitive::packTEMessage(LLMessageSystem *mesgsys) const
     }
     mesgsys->addBinaryDataFast(_PREHASH_TextureEntry, packed_buffer, (S32)(cur_ptr - packed_buffer));
 
-    return FALSE;
+    return true;
 }
 
 
-BOOL LLPrimitive::packTEMessage(LLDataPacker &dp) const
+bool LLPrimitive::packTEMessage(LLDataPacker &dp) const
 {
     const U32 MAX_TES = 45;
 
@@ -1367,7 +1367,7 @@ BOOL LLPrimitive::packTEMessage(LLDataPacker &dp) const
     }
 
     dp.packBinaryData(packed_buffer, (S32)(cur_ptr - packed_buffer), "TextureEntry");
-    return FALSE;
+    return true;
 }
 
 S32 LLPrimitive::parseTEMessage(LLMessageSystem* mesgsys, char const* block_name, const S32 block_num, LLTEContents& tec)
@@ -1484,12 +1484,12 @@ S32 LLPrimitive::unpackTEMessage(LLDataPacker &dp)
 {
     // use a negative block_num to indicate a single-block read (a non-variable block)
     S32 retval = 0;
-    const U32 MAX_TES = 45;
+    constexpr U32 MAX_TES = 45;
 
     // Avoid construction of 32 UUIDs per call
     static LLMaterialID material_ids[MAX_TES];
 
-    const U32 MAX_TE_BUFFER = 4096;
+    constexpr U32 MAX_TE_BUFFER = 4096;
     U8 packed_buffer[MAX_TE_BUFFER];
     memset((void*)packed_buffer, 0, MAX_TE_BUFFER);
 
@@ -1685,7 +1685,7 @@ bool LLPrimitive::getTESTAxes(const U8 face, U32* s_axis, U32* t_axis)
 //============================================================================
 
 //static
-BOOL LLNetworkData::isValid(U16 param_type, U32 size)
+bool LLNetworkData::isValid(U16 param_type, U32 size)
 {
     // ew - better mechanism needed
 
@@ -1707,7 +1707,7 @@ BOOL LLNetworkData::isValid(U16 param_type, U32 size)
         return (size == 9);
     }
 
-    return FALSE;
+    return false;
 }
 
 //============================================================================
@@ -1722,17 +1722,17 @@ LLLightParams::LLLightParams()
     mType = PARAMS_LIGHT;
 }
 
-BOOL LLLightParams::pack(LLDataPacker &dp) const
+bool LLLightParams::pack(LLDataPacker &dp) const
 {
     LLColor4U color4u(mColor);
     dp.packColor4U(color4u, "color");
     dp.packF32(mRadius, "radius");
     dp.packF32(mCutoff, "cutoff");
     dp.packF32(mFalloff, "falloff");
-    return TRUE;
+    return true;
 }
 
-BOOL LLLightParams::unpack(LLDataPacker &dp)
+bool LLLightParams::unpack(LLDataPacker &dp)
 {
     LLColor4U color;
     dp.unpackColor4U(color, "color");
@@ -1750,7 +1750,7 @@ BOOL LLLightParams::unpack(LLDataPacker &dp)
     dp.unpackF32(falloff, "falloff");
     setFalloff(falloff);
 
-    return TRUE;
+    return true;
 }
 
 bool LLLightParams::operator==(const LLNetworkData& data) const
@@ -1830,15 +1830,15 @@ LLReflectionProbeParams::LLReflectionProbeParams()
     mType = PARAMS_REFLECTION_PROBE;
 }
 
-BOOL LLReflectionProbeParams::pack(LLDataPacker &dp) const
+bool LLReflectionProbeParams::pack(LLDataPacker &dp) const
 {
     dp.packF32(mAmbiance, "ambiance");
     dp.packF32(mClipDistance, "clip_distance");
     dp.packU8(mFlags, "flags");
-    return TRUE;
+    return true;
 }
 
-BOOL LLReflectionProbeParams::unpack(LLDataPacker &dp)
+bool LLReflectionProbeParams::unpack(LLDataPacker &dp)
 {
     F32 ambiance;
     F32 clip_distance;
@@ -1851,7 +1851,7 @@ BOOL LLReflectionProbeParams::unpack(LLDataPacker &dp)
 
     dp.unpackU8(mFlags, "flags");
 
-    return TRUE;
+    return true;
 }
 
 bool LLReflectionProbeParams::operator==(const LLNetworkData& data) const
@@ -1962,7 +1962,7 @@ LLFlexibleObjectData::LLFlexibleObjectData()
     mType = PARAMS_FLEXIBLE;
 }
 
-BOOL LLFlexibleObjectData::pack(LLDataPacker &dp) const
+bool LLFlexibleObjectData::pack(LLDataPacker &dp) const
 {
     // Custom, uber-svelte pack "softness" in upper bits of tension & drag
     U8 bit1 = (mSimulateLOD & 2) << 6;
@@ -1972,10 +1972,10 @@ BOOL LLFlexibleObjectData::pack(LLDataPacker &dp) const
     dp.packU8((U8)((mGravity+10.f)*10.01f), "gravity");
     dp.packU8((U8)(mWindSensitivity*10.01f), "wind");
     dp.packVector3(mUserForce, "userforce");
-    return TRUE;
+    return true;
 }
 
-BOOL LLFlexibleObjectData::unpack(LLDataPacker &dp)
+bool LLFlexibleObjectData::unpack(LLDataPacker &dp)
 {
     U8 tension, friction, gravity, wind;
     U8 bit1, bit2;
@@ -1994,7 +1994,7 @@ BOOL LLFlexibleObjectData::unpack(LLDataPacker &dp)
     {
         mUserForce.setVec(0.f, 0.f, 0.f);
     }
-    return TRUE;
+    return true;
 }
 
 bool LLFlexibleObjectData::operator==(const LLNetworkData& data) const
@@ -2090,15 +2090,15 @@ LLSculptParams::LLSculptParams()
     mSculptType = LL_SCULPT_TYPE_SPHERE;
 }
 
-BOOL LLSculptParams::pack(LLDataPacker &dp) const
+bool LLSculptParams::pack(LLDataPacker &dp) const
 {
     dp.packUUID(mSculptTexture, "texture");
     dp.packU8(mSculptType, "type");
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLSculptParams::unpack(LLDataPacker &dp)
+bool LLSculptParams::unpack(LLDataPacker &dp)
 {
     U8 type;
     LLUUID id;
@@ -2106,7 +2106,7 @@ BOOL LLSculptParams::unpack(LLDataPacker &dp)
     dp.unpackU8(type, "type");
 
     setSculptTexture(id, type);
-    return TRUE;
+    return true;
 }
 
 bool LLSculptParams::operator==(const LLNetworkData& data) const
@@ -2190,20 +2190,20 @@ LLLightImageParams::LLLightImageParams()
     mParams.setVec(F_PI*0.5f, 0.f, 0.f);
 }
 
-BOOL LLLightImageParams::pack(LLDataPacker &dp) const
+bool LLLightImageParams::pack(LLDataPacker &dp) const
 {
     dp.packUUID(mLightTexture, "texture");
     dp.packVector3(mParams, "params");
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLLightImageParams::unpack(LLDataPacker &dp)
+bool LLLightImageParams::unpack(LLDataPacker &dp)
 {
     dp.unpackUUID(mLightTexture, "texture");
     dp.unpackVector3(mParams, "params");
 
-    return TRUE;
+    return true;
 }
 
 bool LLLightImageParams::operator==(const LLNetworkData& data) const
@@ -2266,18 +2266,18 @@ LLExtendedMeshParams::LLExtendedMeshParams()
     mFlags = 0;
 }
 
-BOOL LLExtendedMeshParams::pack(LLDataPacker &dp) const
+bool LLExtendedMeshParams::pack(LLDataPacker &dp) const
 {
     dp.packU32(mFlags, "flags");
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLExtendedMeshParams::unpack(LLDataPacker &dp)
+bool LLExtendedMeshParams::unpack(LLDataPacker &dp)
 {
     dp.unpackU32(mFlags, "flags");
 
-    return TRUE;
+    return true;
 }
 
 bool LLExtendedMeshParams::operator==(const LLNetworkData& data) const
@@ -2329,7 +2329,7 @@ LLRenderMaterialParams::LLRenderMaterialParams()
     mType = PARAMS_RENDER_MATERIAL;
 }
 
-BOOL LLRenderMaterialParams::pack(LLDataPacker& dp) const
+bool LLRenderMaterialParams::pack(LLDataPacker& dp) const
 {
     U8 count = (U8)llmin((S32)mEntries.size(), 14); //limited to 255 bytes, no more than 14 material ids
 
@@ -2340,10 +2340,10 @@ BOOL LLRenderMaterialParams::pack(LLDataPacker& dp) const
         dp.packUUID(entry.id, "id");
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLRenderMaterialParams::unpack(LLDataPacker& dp)
+bool LLRenderMaterialParams::unpack(LLDataPacker& dp)
 {
     U8 count;
     dp.unpackU8(count, "count");
@@ -2354,7 +2354,7 @@ BOOL LLRenderMaterialParams::unpack(LLDataPacker& dp)
         dp.unpackUUID(entry.id, "te_id");
     }
 
-    return TRUE;
+    return true;
 }
 
 bool LLRenderMaterialParams::operator==(const LLNetworkData& data) const
diff --git a/indra/llprimitive/llprimitive.h b/indra/llprimitive/llprimitive.h
index 82881dce4e..31bc76344c 100644
--- a/indra/llprimitive/llprimitive.h
+++ b/indra/llprimitive/llprimitive.h
@@ -114,11 +114,11 @@ public:
 public:
     U16 mType;
     virtual ~LLNetworkData() {};
-    virtual BOOL pack(LLDataPacker &dp) const = 0;
-    virtual BOOL unpack(LLDataPacker &dp) = 0;
+    virtual bool pack(LLDataPacker &dp) const = 0;
+    virtual bool unpack(LLDataPacker &dp) = 0;
     virtual bool operator==(const LLNetworkData& data) const = 0;
     virtual void copy(const LLNetworkData& data) = 0;
-    static BOOL isValid(U16 param_type, U32 size);
+    static bool isValid(U16 param_type, U32 size);
 };
 
 extern const F32 LIGHT_MIN_RADIUS;
@@ -141,8 +141,8 @@ private:
 
 public:
     LLLightParams();
-    /*virtual*/ BOOL pack(LLDataPacker &dp) const;
-    /*virtual*/ BOOL unpack(LLDataPacker &dp);
+    /*virtual*/ bool pack(LLDataPacker &dp) const;
+    /*virtual*/ bool unpack(LLDataPacker &dp);
     /*virtual*/ bool operator==(const LLNetworkData& data) const;
     /*virtual*/ void copy(const LLNetworkData& data);
     // LLSD implementations here are provided by Eddy Stryker.
@@ -196,8 +196,8 @@ protected:
 
 public:
     LLReflectionProbeParams();
-    /*virtual*/ BOOL pack(LLDataPacker& dp) const;
-    /*virtual*/ BOOL unpack(LLDataPacker& dp);
+    /*virtual*/ bool pack(LLDataPacker& dp) const;
+    /*virtual*/ bool unpack(LLDataPacker& dp);
     /*virtual*/ bool operator==(const LLNetworkData& data) const;
     /*virtual*/ void copy(const LLNetworkData& data);
     // LLSD implementations here are provided by Eddy Stryker.
@@ -258,8 +258,8 @@ extern const F32 FLEXIBLE_OBJECT_MAX_WIND_SENSITIVITY;
 extern const F32 FLEXIBLE_OBJECT_MAX_INTERNAL_TENSION_FORCE;
 
 extern const F32 FLEXIBLE_OBJECT_DEFAULT_LENGTH;
-extern const BOOL FLEXIBLE_OBJECT_DEFAULT_USING_COLLISION_SPHERE;
-extern const BOOL FLEXIBLE_OBJECT_DEFAULT_RENDERING_COLLISION_SPHERE;
+extern const bool FLEXIBLE_OBJECT_DEFAULT_USING_COLLISION_SPHERE;
+extern const bool FLEXIBLE_OBJECT_DEFAULT_RENDERING_COLLISION_SPHERE;
 
 
 class LLFlexibleObjectData : public LLNetworkData
@@ -271,8 +271,8 @@ protected:
     F32         mWindSensitivity;   // interacts with tension, air friction, and gravity
     F32         mTension;           //interacts in complex ways with other parameters
     LLVector3   mUserForce;         // custom user-defined force vector
-    //BOOL      mUsingCollisionSphere;
-    //BOOL      mRenderingCollisionSphere;
+    //bool      mUsingCollisionSphere;
+    //bool      mRenderingCollisionSphere;
 
 public:
     void        setSimulateLOD(S32 lod)         { mSimulateLOD = llclamp(lod, (S32)FLEXIBLE_OBJECT_MIN_SECTIONS, (S32)FLEXIBLE_OBJECT_MAX_SECTIONS); }
@@ -291,8 +291,8 @@ public:
 
     //------ the constructor for the structure ------------
     LLFlexibleObjectData();
-    BOOL pack(LLDataPacker &dp) const;
-    BOOL unpack(LLDataPacker &dp);
+    bool pack(LLDataPacker &dp) const;
+    bool unpack(LLDataPacker &dp);
     bool operator==(const LLNetworkData& data) const;
     void copy(const LLNetworkData& data);
     LLSD asLLSD() const;
@@ -310,8 +310,8 @@ protected:
 
 public:
     LLSculptParams();
-    /*virtual*/ BOOL pack(LLDataPacker &dp) const;
-    /*virtual*/ BOOL unpack(LLDataPacker &dp);
+    /*virtual*/ bool pack(LLDataPacker &dp) const;
+    /*virtual*/ bool unpack(LLDataPacker &dp);
     /*virtual*/ bool operator==(const LLNetworkData& data) const;
     /*virtual*/ void copy(const LLNetworkData& data);
     LLSD asLLSD() const;
@@ -331,8 +331,8 @@ protected:
 
 public:
     LLLightImageParams();
-    /*virtual*/ BOOL pack(LLDataPacker &dp) const;
-    /*virtual*/ BOOL unpack(LLDataPacker &dp);
+    /*virtual*/ bool pack(LLDataPacker &dp) const;
+    /*virtual*/ bool unpack(LLDataPacker &dp);
     /*virtual*/ bool operator==(const LLNetworkData& data) const;
     /*virtual*/ void copy(const LLNetworkData& data);
     LLSD asLLSD() const;
@@ -356,8 +356,8 @@ public:
     static const U32 ANIMATED_MESH_ENABLED_FLAG = 0x1 << 0;
 
     LLExtendedMeshParams();
-    /*virtual*/ BOOL pack(LLDataPacker &dp) const;
-    /*virtual*/ BOOL unpack(LLDataPacker &dp);
+    /*virtual*/ bool pack(LLDataPacker &dp) const;
+    /*virtual*/ bool unpack(LLDataPacker &dp);
     /*virtual*/ bool operator==(const LLNetworkData& data) const;
     /*virtual*/ void copy(const LLNetworkData& data);
     LLSD asLLSD() const;
@@ -381,8 +381,8 @@ private:
 
 public:
     LLRenderMaterialParams();
-    BOOL pack(LLDataPacker& dp) const override;
-    BOOL unpack(LLDataPacker& dp) override;
+    bool pack(LLDataPacker& dp) const override;
+    bool unpack(LLDataPacker& dp) override;
     bool operator==(const LLNetworkData& data) const override;
     void copy(const LLNetworkData& data) override;
 
@@ -395,7 +395,7 @@ public:
 
 // This code is not naming-standards compliant. Leaving it like this for
 // now to make the connection to code in
-//  BOOL packTEMessage(LLDataPacker &dp) const;
+//  bool packTEMessage(LLDataPacker &dp) const;
 // more obvious. This should be refactored to remove the duplication, at which
 // point we can fix the names as well.
 // - Vir
@@ -457,10 +457,10 @@ public:
     void setPCode(const LLPCode pcode);
     const LLVolume *getVolumeConst() const { return mVolumep; }     // HACK for Windoze confusion about ostream operator in LLVolume
     LLVolume *getVolume() const { return mVolumep; }
-    virtual BOOL setVolume(const LLVolumeParams &volume_params, const S32 detail, bool unique_volume = false);
+    virtual bool setVolume(const LLVolumeParams &volume_params, const S32 detail, bool unique_volume = false);
 
     // Modify texture entry properties
-    inline BOOL validTE(const U8 te_num) const;
+    inline bool validTE(const U8 te_num) const;
     LLTextureEntry* getTE(const U8 te_num) const;
 
     virtual void setNumTEs(const U8 num_tes);
@@ -489,17 +489,17 @@ public:
     virtual S32 setTEGlow(const U8 te, const F32 glow);
     virtual S32 setTEMaterialID(const U8 te, const LLMaterialID& pMaterialID);
     virtual S32 setTEMaterialParams(const U8 index, const LLMaterialPtr pMaterialParams);
-    virtual BOOL setMaterial(const U8 material); // returns TRUE if material changed
+    virtual bool setMaterial(const U8 material); // returns true if material changed
     virtual void setTESelected(const U8 te, bool sel);
 
     LLMaterialPtr getTEMaterialParams(const U8 index);
 
     void copyTEs(const LLPrimitive *primitive);
     S32 packTEField(U8 *cur_ptr, U8 *data_ptr, U8 data_size, U8 last_face_index, EMsgVariableType type) const;
-    BOOL packTEMessage(LLMessageSystem *mesgsys) const;
-    BOOL packTEMessage(LLDataPacker &dp) const;
+    bool packTEMessage(LLMessageSystem *mesgsys) const;
+    bool packTEMessage(LLDataPacker &dp) const;
     S32 unpackTEMessage(LLMessageSystem* mesgsys, char const* block_name, const S32 block_num); // Variable num of blocks
-    BOOL unpackTEMessage(LLDataPacker &dp);
+    S32 unpackTEMessage(LLDataPacker &dp);
     S32 parseTEMessage(LLMessageSystem* mesgsys, char const* block_name, const S32 block_num, LLTEContents& tec);
     S32 applyParsedTEMessage(LLTEContents& tec);
 
@@ -557,25 +557,26 @@ public:
     // takes the contents of other_list and clears other_list
     void takeTextureList(LLPrimTextureList& other_list);
 
-    inline BOOL isAvatar() const;
-    inline BOOL isSittingAvatar() const;
-    inline BOOL isSittingAvatarOnGround() const;
+    inline bool isAvatar() const;
+    inline bool isSittingAvatar() const;
+    inline bool isSittingAvatarOnGround() const;
     inline bool hasBumpmap() const  { return mNumBumpmapTEs > 0;}
 
     void setFlags(U32 flags) { mMiscFlags = flags; }
     void addFlags(U32 flags) { mMiscFlags |= flags; }
     void removeFlags(U32 flags) { mMiscFlags &= ~flags; }
     U32 getFlags() const { return mMiscFlags; }
+    bool checkFlags(U32 flags) const { return (mMiscFlags & flags) != 0; }
 
     static std::string pCodeToString(const LLPCode pcode);
     static LLPCode legacyToPCode(const U8 legacy);
     static U8 pCodeToLegacy(const LLPCode pcode);
     static bool getTESTAxes(const U8 face, U32* s_axis, U32* t_axis);
 
-    BOOL hasRenderMaterialParams() const;
+    bool hasRenderMaterialParams() const;
 
-    inline static BOOL isPrimitive(const LLPCode pcode);
-    inline static BOOL isApp(const LLPCode pcode);
+    inline static bool isPrimitive(const LLPCode pcode);
+    inline static bool isApp(const LLPCode pcode);
 
 private:
     void updateNumBumpmap(const U8 index, const U8 bump);
@@ -601,39 +602,37 @@ public:
     };
 };
 
-inline BOOL LLPrimitive::isAvatar() const
+inline bool LLPrimitive::isAvatar() const
 {
-    return ( LL_PCODE_LEGACY_AVATAR == mPrimitiveCode ) ? TRUE : FALSE;
+    return LL_PCODE_LEGACY_AVATAR == mPrimitiveCode;
 }
 
-inline BOOL LLPrimitive::isSittingAvatar() const
+inline bool LLPrimitive::isSittingAvatar() const
 {
     // this is only used server-side
-    return ( LL_PCODE_LEGACY_AVATAR == mPrimitiveCode
-             &&  ((getFlags() & (PRIM_FLAG_SITTING | PRIM_FLAG_SITTING_ON_GROUND)) != 0) ) ? TRUE : FALSE;
+    return isAvatar() && checkFlags(PRIM_FLAG_SITTING | PRIM_FLAG_SITTING_ON_GROUND);
 }
 
-inline BOOL LLPrimitive::isSittingAvatarOnGround() const
+inline bool LLPrimitive::isSittingAvatarOnGround() const
 {
     // this is only used server-side
-    return ( LL_PCODE_LEGACY_AVATAR == mPrimitiveCode
-             &&  ((getFlags() & PRIM_FLAG_SITTING_ON_GROUND) != 0) ) ? TRUE : FALSE;
+    return isAvatar() && checkFlags(PRIM_FLAG_SITTING_ON_GROUND);
 }
 
 // static
-inline BOOL LLPrimitive::isPrimitive(const LLPCode pcode)
+inline bool LLPrimitive::isPrimitive(const LLPCode pcode)
 {
     LLPCode base_type = pcode & LL_PCODE_BASE_MASK;
 
     if (base_type && (base_type < LL_PCODE_APP))
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 // static
-inline BOOL LLPrimitive::isApp(const LLPCode pcode)
+inline bool LLPrimitive::isApp(const LLPCode pcode)
 {
     LLPCode base_type = pcode & LL_PCODE_BASE_MASK;
 
@@ -789,7 +788,7 @@ void LLPrimitive::setAcceleration(const F32 x, const F32 y, const F32 z)
 }
 #endif // CHECK_FOR_FINITE
 
-inline BOOL LLPrimitive::validTE(const U8 te_num) const
+inline bool LLPrimitive::validTE(const U8 te_num) const
 {
     return (mNumTEs && te_num < mNumTEs);
 }
diff --git a/indra/llprimitive/llprimtexturelist.cpp b/indra/llprimitive/llprimtexturelist.cpp
index 6b7e2ecf5b..7f60d8025a 100644
--- a/indra/llprimitive/llprimtexturelist.cpp
+++ b/indra/llprimitive/llprimtexturelist.cpp
@@ -83,13 +83,13 @@ void LLPrimTextureList::clear()
 void LLPrimTextureList::copy(const LLPrimTextureList& other_list)
 {
     // compare the sizes
-    S32 this_size = mEntryList.size();
-    S32 other_size = other_list.mEntryList.size();
+    auto this_size = mEntryList.size();
+    auto other_size = other_list.mEntryList.size();
 
     if (this_size > other_size)
     {
         // remove the extra entries
-        for (S32 index = this_size; index > other_size; --index)
+        for (size_t index = this_size; index > other_size; --index)
         {
             delete mEntryList[index-1];
         }
@@ -97,18 +97,18 @@ void LLPrimTextureList::copy(const LLPrimTextureList& other_list)
         this_size = other_size;
     }
 
-    S32 index = 0;
+    size_t index = 0;
     // copy for the entries that already exist
     for ( ; index < this_size; ++index)
     {
         delete mEntryList[index];
-        mEntryList[index] = other_list.getTexture(index)->newCopy();
+        mEntryList[index] = other_list.getTexture(static_cast<U8>(index))->newCopy();
     }
 
     // add new entires if needed
     for ( ; index < other_size; ++index)
     {
-        mEntryList.push_back( other_list.getTexture(index)->newCopy() );
+        mEntryList.push_back( other_list.getTexture(static_cast<U8>(index))->newCopy());
     }
 }
 
@@ -127,9 +127,9 @@ void LLPrimTextureList::take(LLPrimTextureList& other_list)
 // returns TEM_CHANGE_TEXTURE if successful, otherwise TEM_CHANGE_NONE
 S32 LLPrimTextureList::copyTexture(const U8 index, const LLTextureEntry* te)
 {
-    if (S32(index) >= mEntryList.size())
+    if (size_t(index) >= mEntryList.size())
     {
-        S32 current_size = mEntryList.size();
+        auto current_size = mEntryList.size();
         LL_WARNS() << "ignore copy of index = " << S32(index) << " into texture entry list of size = " << current_size << LL_ENDL;
         return TEM_CHANGE_NONE;
     }
@@ -382,7 +382,7 @@ LLMaterialPtr LLPrimTextureList::getMaterialParams(const U8 index)
 
 S32 LLPrimTextureList::size() const
 {
-    return mEntryList.size();
+    return static_cast<S32>(mEntryList.size());
 }
 
 // sets the size of the mEntryList container
@@ -393,12 +393,12 @@ void LLPrimTextureList::setSize(S32 new_size)
         new_size = 0;
     }
 
-    S32 current_size = mEntryList.size();
+    auto current_size = mEntryList.size();
 
     if (new_size > current_size)
     {
         mEntryList.resize(new_size);
-        for (S32 index = current_size; index < new_size; ++index)
+        for (size_t index = current_size; index < new_size; ++index)
         {
             if (current_size > 0
                 && mEntryList[current_size - 1])
@@ -416,7 +416,7 @@ void LLPrimTextureList::setSize(S32 new_size)
     }
     else if (new_size < current_size)
     {
-        for (S32 index = current_size-1; index >= new_size; --index)
+        for (size_t index = current_size-1; index >= new_size; --index)
         {
             delete mEntryList[index];
         }
diff --git a/indra/llprimitive/lltextureanim.cpp b/indra/llprimitive/lltextureanim.cpp
index cc156722f4..579538075a 100644
--- a/indra/llprimitive/lltextureanim.cpp
+++ b/indra/llprimitive/lltextureanim.cpp
@@ -54,38 +54,38 @@ void LLTextureAnim::reset()
     mRate = 1.f;
 }
 
-BOOL LLTextureAnim::equals(const LLTextureAnim &other) const
+bool LLTextureAnim::equals(const LLTextureAnim &other) const
 {
     if (mMode != other.mMode)
     {
-        return FALSE;
+        return false;
     }
     if (mFace != other.mFace)
     {
-        return FALSE;
+        return false;
     }
     if (mSizeX != other.mSizeX)
     {
-        return FALSE;
+        return false;
     }
     if (mSizeY != other.mSizeY)
     {
-        return FALSE;
+        return false;
     }
     if (mStart != other.mStart)
     {
-        return FALSE;
+        return false;
     }
     if (mLength != other.mLength)
     {
-        return FALSE;
+        return false;
     }
     if (mRate != other.mRate)
     {
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 void LLTextureAnim::packTAMessage(LLMessageSystem *mesgsys) const
 {
diff --git a/indra/llprimitive/lltextureanim.h b/indra/llprimitive/lltextureanim.h
index ef76549903..2d10153043 100644
--- a/indra/llprimitive/lltextureanim.h
+++ b/indra/llprimitive/lltextureanim.h
@@ -44,7 +44,7 @@ public:
     void packTAMessage(LLDataPacker &dp) const;
     void unpackTAMessage(LLMessageSystem *mesgsys, const S32 block_num);
     void unpackTAMessage(LLDataPacker &dp);
-    BOOL equals(const LLTextureAnim &other) const;
+    bool equals(const LLTextureAnim &other) const;
     LLSD asLLSD() const;
     operator LLSD() const { return asLLSD(); }
     bool fromLLSD(LLSD& sd);
diff --git a/indra/llprimitive/lltextureentry.cpp b/indra/llprimitive/lltextureentry.cpp
index 2ed8f8c044..ac482ffbf9 100644
--- a/indra/llprimitive/lltextureentry.cpp
+++ b/indra/llprimitive/lltextureentry.cpp
@@ -407,9 +407,9 @@ S32 LLTextureEntry::setColor(const LLColor3 &color)
 
 S32 LLTextureEntry::setAlpha(const F32 alpha)
 {
-    if (mColor.mV[VW] != alpha)
+    if (mColor.mV[VALPHA] != alpha)
     {
-        mColor.mV[VW] = alpha;
+        mColor.mV[VALPHA] = alpha;
         return TEM_CHANGE_COLOR;
     }
     return TEM_CHANGE_NONE;
diff --git a/indra/llprimitive/llvolumemessage.cpp b/indra/llprimitive/llvolumemessage.cpp
index 804b208e3a..aa4bd711ab 100644
--- a/indra/llprimitive/llvolumemessage.cpp
+++ b/indra/llprimitive/llvolumemessage.cpp
@@ -478,13 +478,15 @@ bool LLVolumeMessage::constrainVolumeParams(LLVolumeParams& params)
     bad |= params.setRevolutions(params.getPathParams().getRevolutions()) ? 0 : 0x200;
     bad |= params.setRadiusOffset(params.getPathParams().getRadiusOffset()) ? 0 : 0x400;
     bad |= params.setSkew(params.getPathParams().getSkew()) ? 0 : 0x800;
-    if(bad)
+
+    if (bad)
     {
         LL_WARNS() << "LLVolumeMessage::constrainVolumeParams() - "
                 << "forced to constrain incoming volume params: "
-                << llformat("0x%04x",bad) << LL_ENDL;
+                << llformat("0x%04x", bad) << LL_ENDL;
     }
-    return bad ? false : true;
+
+    return bad == 0;
 }
 
 bool LLVolumeMessage::packVolumeParams(const LLVolumeParams* params, LLMessageSystem *mesgsys)
diff --git a/indra/llprimitive/tests/llgltfmaterial_test.cpp b/indra/llprimitive/tests/llgltfmaterial_test.cpp
index b56c9ab4f5..4f2de82386 100644
--- a/indra/llprimitive/tests/llgltfmaterial_test.cpp
+++ b/indra/llprimitive/tests/llgltfmaterial_test.cpp
@@ -1,31 +1,33 @@
-/** 
+/**
  * @file llgltfmaterial_test.cpp
  *
- * $LicenseInfo:firstyear=2023&license=viewerlgpl$                               
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2023, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$                                                               
+ * $/LicenseInfo$
  */
 
 #include "linden_common.h"
 #include "lltut.h"
 
+#include <set>
+
 #include "../llgltfmaterial.h"
 #include "lluuid.cpp"
 
@@ -108,9 +110,9 @@ namespace tut
 
         material.setAlphaCutoff(test_fraction);
         // Because this is the default value, it should append to the extras field to mark it as an override
-        material.setAlphaMode(LLGLTFMaterial::ALPHA_MODE_OPAQUE);
+        material.setAlphaMode(LLGLTFMaterial::ALPHA_MODE_OPAQUE, true);
         // Because this is the default value, it should append to the extras field to mark it as an override
-        material.setDoubleSided(false);
+        material.setDoubleSided(false, true);
 
         return material;
     }
@@ -143,7 +145,7 @@ namespace tut
 #if LL_WINDOWS
         // If any fields are added/changed, these tests should be updated (consider also updating ASSET_VERSION in LLGLTFMaterial)
         // This test result will vary between compilers, so only test a single platform
-        ensure_equals("fields supported for GLTF (sizeof check)", sizeof(LLGLTFMaterial), 224);
+        ensure_equals("fields supported for GLTF (sizeof check)", sizeof(LLGLTFMaterial), 232);
 #endif
 #endif
         ensure_equals("LLGLTFMaterial texture info count", (U32)LLGLTFMaterial::GLTF_TEXTURE_INFO_COUNT, 4);
@@ -366,4 +368,74 @@ namespace tut
             ensure_equals("LLGLTFMaterial: double sided override flag unset", material.mOverrideDoubleSided, false);
         }
     }
+
+    template<typename T>
+    void ensure_material_hash_pre(LLGLTFMaterial& material, T& material_field, const T new_value, const std::string& field_name)
+    {
+        ensure("LLGLTFMaterial: Hash: Test field " + field_name + " is part of the test material object", (
+                    size_t(&material_field) >= size_t(&material) &&
+                    (size_t(&material_field) + sizeof(material_field)) <= (size_t(&material) + sizeof(material))
+                    ));
+        ensure("LLGLTFMaterial: Hash: " + field_name + " differs and will cause a perturbation worth hashing", material_field != new_value);
+    }
+
+    template<typename T>
+    void ensure_material_hash_not_changed(LLGLTFMaterial& material, T& material_field, const T new_value, const std::string& field_name)
+    {
+        ensure_material_hash_pre(material, material_field, new_value, field_name);
+
+        const LLGLTFMaterial old_material = material;
+        material_field = new_value;
+        // If this test fails, consult LLGLTFMaterial::getHash, and optionally consult http://www.catb.org/esr/structure-packing/ for guidance on optimal memory packing (effectiveness is platform-dependent)
+        ensure_equals(("LLGLTFMaterial: Hash: Perturbing " + field_name + " to new value does NOT change the hash").c_str(), material.getHash(), old_material.getHash());
+    }
+
+    template<typename T>
+    void ensure_material_hash_changed(LLGLTFMaterial& material, T& material_field, const T new_value, const std::string& field_name)
+    {
+        ensure_material_hash_pre(material, material_field, new_value, field_name);
+
+        const LLGLTFMaterial old_material = material;
+        material_field = new_value;
+        // If this test fails, consult LLGLTFMaterial::getHash, and optionally consult http://www.catb.org/esr/structure-packing/ for guidance on optimal memory packing (effectiveness is platform-dependent)
+        ensure_not_equals(("LLGLTFMaterial: Hash: Perturbing " + field_name + " to new value changes the hash").c_str(), material.getHash(), old_material.getHash());
+    }
+
+#define ENSURE_HASH_NOT_CHANGED(HASH_MAT, SOURCE_MAT, FIELD) ensure_material_hash_not_changed(HASH_MAT, HASH_MAT.FIELD, SOURCE_MAT.FIELD, #FIELD)
+#define ENSURE_HASH_CHANGED(HASH_MAT, SOURCE_MAT, FIELD) ensure_material_hash_changed(HASH_MAT, HASH_MAT.FIELD, SOURCE_MAT.FIELD, #FIELD)
+
+    // Test LLGLTFMaterial::getHash, which is very sensitive to the ordering of fields
+    template<> template<>
+    void llgltfmaterial_object_t::test<12>()
+    {
+        // *NOTE: Due to direct manipulation of the fields of materials
+        // throughout this test, the resulting modified materials may not be
+        // compliant or properly serializable.
+
+        // Ensure all fields of source_mat are set to values that differ from
+        // LLGLTFMaterial::sDefault, even if that would result in an invalid
+        // material object.
+        LLGLTFMaterial source_mat = create_test_material();
+        source_mat.mTrackingIdToLocalTexture[LLUUID::generateNewID()] = LLUUID::generateNewID();
+        source_mat.mLocalTexDataDigest = 1;
+        source_mat.mAlphaMode = LLGLTFMaterial::ALPHA_MODE_MASK;
+        source_mat.mDoubleSided = true;
+
+        LLGLTFMaterial hash_mat;
+
+        ENSURE_HASH_NOT_CHANGED(hash_mat, source_mat, mTrackingIdToLocalTexture);
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mLocalTexDataDigest);
+
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mTextureId);
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mTextureTransform);
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mBaseColor);
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mEmissiveColor);
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mMetallicFactor);
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mRoughnessFactor);
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mAlphaCutoff);
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mAlphaMode);
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mDoubleSided);
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mOverrideDoubleSided);
+        ENSURE_HASH_CHANGED(hash_mat, source_mat, mOverrideAlphaMode);
+    }
 }
diff --git a/indra/llprimitive/tests/llprimitive_test.cpp b/indra/llprimitive/tests/llprimitive_test.cpp
index 1b47182c28..0213a3e8b6 100644
--- a/indra/llprimitive/tests/llprimitive_test.cpp
+++ b/indra/llprimitive/tests/llprimitive_test.cpp
@@ -46,7 +46,7 @@ public:
         if (mVolumeTest.isNull() || volume_params != mCurrParamsTest || detail != mCurrDetailTest)
         {
             F32 volume_detail = LLVolumeLODGroup::getVolumeScaleFromDetail(detail);
-            mVolumeTest = new LLVolume(volume_params, volume_detail, FALSE, FALSE);
+            mVolumeTest = new LLVolume(volume_params, volume_detail, false, false);
             mCurrParamsTest = volume_params;
             mCurrDetailTest = detail;
             return mVolumeTest;
@@ -109,7 +109,7 @@ void LLPrimTextureList::take(LLPrimTextureList &other_list) { }
 void LLPrimTextureList::setSize(S32 new_size) { mEntryList.resize(new_size); }
 void LLPrimTextureList::setAllIDs(const LLUUID &id) { }
 LLTextureEntry * LLPrimTextureList::getTexture(const U8 index) const { return nullptr; }
-S32 LLPrimTextureList::size() const { return mEntryList.size(); }
+S32 LLPrimTextureList::size() const { return static_cast<S32>(mEntryList.size()); }
 
 class PRIMITIVE_TEST_SETUP
 {
@@ -193,7 +193,7 @@ namespace tut
         ensure(!primitive.isChanged(LLXform::GEOMETRY));
 
         // Make sure setVolume returns true
-        ensure(primitive.setVolume(params, 0, true) == TRUE);
+        ensure(primitive.setVolume(params, 0, true) == true);
         LLVolume* new_volume = primitive.getVolume();
 
         // make sure new volume was actually created
@@ -210,12 +210,12 @@ namespace tut
         ensure(primitive.isChanged(LLXform::GEOMETRY));
 
         // Run it twice to make sure it doesn't create a different one if params are the same
-        ensure(primitive.setVolume(params, 0, true) == FALSE);
+        ensure(primitive.setVolume(params, 0, true) == false);
         ensure(new_volume == primitive.getVolume());
 
         // Change the param definition and try setting it again.
         params.setRevolutions(4);
-        ensure(primitive.setVolume(params, 0, true) == TRUE);
+        ensure(primitive.setVolume(params, 0, true) == true);
 
         // Ensure that we now have a different volume
         ensure(new_volume != primitive.getVolume());
@@ -238,7 +238,7 @@ namespace tut
         ensure(!primitive.isChanged(LLXform::GEOMETRY));
 
         // Make sure setVolume returns true
-        ensure(primitive.setVolume(params, 0, false) == TRUE);
+        ensure(primitive.setVolume(params, 0, false) == true);
 
         LLVolume* new_volume = primitive.getVolume();
 
@@ -256,12 +256,12 @@ namespace tut
         ensure(primitive.isChanged(LLXform::GEOMETRY));
 
         // Run it twice to make sure it doesn't create a different one if params are the same
-        ensure(primitive.setVolume(params, 0, false) == FALSE);
+        ensure(primitive.setVolume(params, 0, false) == false);
         ensure(new_volume == primitive.getVolume());
 
         // Change the param definition and try setting it again.
         params.setRevolutions(4);
-        ensure(primitive.setVolume(params, 0, false) == TRUE);
+        ensure(primitive.setVolume(params, 0, false) == true);
 
         // Ensure that we now have a different volume
         ensure(new_volume != primitive.getVolume());
diff --git a/indra/llrender/llcubemap.cpp b/indra/llrender/llcubemap.cpp
index f0158ec54f..53691bafe2 100644
--- a/indra/llrender/llcubemap.cpp
+++ b/indra/llrender/llcubemap.cpp
@@ -78,7 +78,7 @@ void LLCubeMap::initGL()
 
             for (int i = 0; i < 6; i++)
             {
-                mImages[i] = new LLImageGL(RESOLUTION, RESOLUTION, 4, FALSE);
+                mImages[i] = new LLImageGL(RESOLUTION, RESOLUTION, 4, false);
             #if USE_SRGB_DECODE
                 if (mIssRGB) {
                     mImages[i]->setExplicitFormat(GL_SRGB8_ALPHA8, GL_RGBA);
@@ -111,6 +111,9 @@ void LLCubeMap::initRawData(const std::vector<LLPointer<LLImageRaw> >& rawimages
     // Yes, I know that this is inefficient! - djs 08/08/02
     for (int i = 0; i < 6; i++)
     {
+        LLImageDataSharedLock lockIn(rawimages[i]);
+        LLImageDataLock lockOut(mRawImages[i]);
+
         const U8 *sd = rawimages[i]->getData();
         U8 *td = mRawImages[i]->getData();
 
@@ -173,7 +176,7 @@ void LLCubeMap::initReflectionMap(U32 resolution, U32 components)
 
     LLImageGL::generateTextures(1, &texname);
 
-    mImages[0] = new LLImageGL(resolution, resolution, components, TRUE);
+    mImages[0] = new LLImageGL(resolution, resolution, components, true);
     mImages[0]->setTexName(texname);
     mImages[0]->setTarget(mTargets[0], LLTexUnit::TT_CUBE_MAP);
     gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_CUBE_MAP, texname);
@@ -197,7 +200,7 @@ void LLCubeMap::initEnvironmentMap(const std::vector<LLPointer<LLImageRaw> >& ra
         llassert(rawimages[i]->getHeight() == resolution);
         llassert(rawimages[i]->getComponents() == components);
 
-        mImages[i] = new LLImageGL(resolution, resolution, components, TRUE);
+        mImages[i] = new LLImageGL(resolution, resolution, components, true);
         mImages[i]->setTarget(mTargets[i], LLTexUnit::TT_CUBE_MAP);
         mRawImages[i] = rawimages[i];
         mImages[i]->createGLTexture(0, mRawImages[i], texname);
@@ -223,8 +226,8 @@ void LLCubeMap::generateMipMaps()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
 
-    mImages[0]->setUseMipMaps(TRUE);
-    mImages[0]->setHasMipMaps(TRUE);
+    mImages[0]->setUseMipMaps(true);
+    mImages[0]->setHasMipMaps(true);
     enableTexture(0);
     bind();
     mImages[0]->setFilteringOption(LLTexUnit::TFO_BILINEAR);
diff --git a/indra/llrender/llcubemaparray.cpp b/indra/llrender/llcubemaparray.cpp
index a758d7e22b..0242fe60ce 100644
--- a/indra/llrender/llcubemaparray.cpp
+++ b/indra/llrender/llcubemaparray.cpp
@@ -42,6 +42,8 @@
 
 //#pragma optimize("", off)
 
+using namespace LLImageGLMemory;
+
 // MUST match order of OpenGL face-layers
 GLenum LLCubeMapArray::sTargets[6] =
 {
@@ -107,7 +109,7 @@ LLCubeMapArray::~LLCubeMapArray()
 {
 }
 
-void LLCubeMapArray::allocate(U32 resolution, U32 components, U32 count, BOOL use_mips)
+void LLCubeMapArray::allocate(U32 resolution, U32 components, U32 count, bool use_mips)
 {
     U32 texname = 0;
     mWidth = resolution;
@@ -128,6 +130,8 @@ void LLCubeMapArray::allocate(U32 resolution, U32 components, U32 count, BOOL us
 
     U32 mip = 0;
 
+    free_cur_tex_image();
+
     while (resolution >= 1)
     {
 #if GL_VERSION_4_0
@@ -143,6 +147,8 @@ void LLCubeMapArray::allocate(U32 resolution, U32 components, U32 count, BOOL us
         ++mip;
     }
 
+    alloc_tex_image(resolution * 6, resolution, format);
+
     mImage->setAddressMode(LLTexUnit::TAM_CLAMP);
 
     if (use_mips)
diff --git a/indra/llrender/llcubemaparray.h b/indra/llrender/llcubemaparray.h
index 9d78c5b0d4..675aaaf07c 100644
--- a/indra/llrender/llcubemaparray.h
+++ b/indra/llrender/llcubemaparray.h
@@ -51,8 +51,8 @@ public:
     // res - resolution of each cube face
     // components - number of components per pixel
     // count - number of cube maps in the array
-    // use_mips - if TRUE, mipmaps will be allocated for this cube map array and anisotropic filtering will be used
-    void allocate(U32 res, U32 components, U32 count, BOOL use_mips = TRUE);
+    // use_mips - if true, mipmaps will be allocated for this cube map array and anisotropic filtering will be used
+    void allocate(U32 res, U32 components, U32 count, bool use_mips = true);
     void bind(S32 stage);
     void unbind();
 
diff --git a/indra/llrender/llfontbitmapcache.cpp b/indra/llrender/llfontbitmapcache.cpp
index 243041945a..46c2e89797 100644
--- a/indra/llrender/llfontbitmapcache.cpp
+++ b/indra/llrender/llfontbitmapcache.cpp
@@ -78,11 +78,11 @@ LLImageGL *LLFontBitmapCache::getImageGL(EFontGlyphType bitmap_type, U32 bitmap_
 }
 
 
-BOOL LLFontBitmapCache::nextOpenPos(S32 width, S32& pos_x, S32& pos_y, EFontGlyphType bitmap_type, U32& bitmap_num)
+bool LLFontBitmapCache::nextOpenPos(S32 width, S32& pos_x, S32& pos_y, EFontGlyphType bitmap_type, U32& bitmap_num)
 {
     if (bitmap_type >= EFontGlyphType::Count)
     {
-        return FALSE;
+        return false;
     }
 
     const U32 bitmap_idx = static_cast<U32>(bitmap_type);
@@ -108,7 +108,7 @@ BOOL LLFontBitmapCache::nextOpenPos(S32 width, S32& pos_x, S32& pos_y, EFontGlyp
 
             S32 num_components = getNumComponents(bitmap_type);
             mImageRawVec[bitmap_idx].push_back(new LLImageRaw(mBitmapWidth, mBitmapHeight, num_components));
-            bitmap_num = mImageRawVec[bitmap_idx].size() - 1;
+            bitmap_num = static_cast<U32>(mImageRawVec[bitmap_idx].size()) - 1;
 
             LLImageRaw* image_raw = getImageRaw(bitmap_type, bitmap_num);
             if (EFontGlyphType::Grayscale == bitmap_type)
@@ -126,7 +126,7 @@ BOOL LLFontBitmapCache::nextOpenPos(S32 width, S32& pos_x, S32& pos_y, EFontGlyp
 
             // Attach corresponding GL texture. (*TODO: is this needed?)
             gGL.getTexUnit(0)->bind(image_gl);
-            image_gl->setFilteringOption(LLTexUnit::TFO_POINT); // was setMipFilterNearest(TRUE, TRUE);
+            image_gl->setFilteringOption(LLTexUnit::TFO_POINT); // was setMipFilterNearest(true, true);
         }
         else
         {
@@ -142,7 +142,7 @@ BOOL LLFontBitmapCache::nextOpenPos(S32 width, S32& pos_x, S32& pos_y, EFontGlyp
 
     mCurrentOffsetX[bitmap_idx] += width + 1;
 
-    return TRUE;
+    return true;
 }
 
 void LLFontBitmapCache::destroyGL()
diff --git a/indra/llrender/llfontbitmapcache.h b/indra/llrender/llfontbitmapcache.h
index 8f704df44f..f2dfd87877 100644
--- a/indra/llrender/llfontbitmapcache.h
+++ b/indra/llrender/llfontbitmapcache.h
@@ -52,7 +52,7 @@ public:
 
     void reset();
 
-    BOOL nextOpenPos(S32 width, S32& posX, S32& posY, EFontGlyphType bitmapType, U32& bitmapNum);
+    bool nextOpenPos(S32 width, S32& posX, S32& posY, EFontGlyphType bitmapType, U32& bitmapNum);
 
     void destroyGL();
 
@@ -60,7 +60,7 @@ public:
     LLImageGL* getImageGL(EFontGlyphType bitmapType, U32 bitmapNum) const;
 
     S32 getMaxCharWidth() const { return mMaxCharWidth; }
-    U32 getNumBitmaps(EFontGlyphType bitmapType) const { return (bitmapType < EFontGlyphType::Count) ? mImageRawVec[static_cast<U32>(bitmapType)].size() : 0; }
+    U32 getNumBitmaps(EFontGlyphType bitmapType) const { return (bitmapType < EFontGlyphType::Count) ? static_cast<U32>(mImageRawVec[static_cast<U32>(bitmapType)].size()) : 0U; }
     S32 getBitmapWidth() const { return mBitmapWidth; }
     S32 getBitmapHeight() const { return mBitmapHeight; }
 
diff --git a/indra/llrender/llfontfreetype.cpp b/indra/llrender/llfontfreetype.cpp
index 554e70d6a7..9766de1dfa 100644
--- a/indra/llrender/llfontfreetype.cpp
+++ b/indra/llrender/llfontfreetype.cpp
@@ -145,7 +145,7 @@ LLFontFreetype::LLFontFreetype()
     pFileStream(NULL),
     pFtStream(NULL),
 #endif
-    mIsFallback(FALSE),
+    mIsFallback(false),
     mFTFace(NULL),
     mRenderGlyphCount(0),
     mAddGlyphCount(0),
@@ -189,7 +189,7 @@ void ft_close_cb(FT_Stream stream) {
 }
 #endif
 
-BOOL LLFontFreetype::loadFace(const std::string& filename, F32 point_size, F32 vert_dpi, F32 horz_dpi, bool is_fallback, S32 face_n)
+bool LLFontFreetype::loadFace(const std::string& filename, F32 point_size, F32 vert_dpi, F32 horz_dpi, bool is_fallback, S32 face_n)
 {
     // Don't leak face objects.  This is also needed to deal with
     // changed font file names.
@@ -214,7 +214,7 @@ BOOL LLFontFreetype::loadFace(const std::string& filename, F32 point_size, F32 v
 #ifdef LL_WINDOWS
         clearFontStreams();
 #endif
-        return FALSE;
+        return false;
     }
 
     mIsFallback = is_fallback;
@@ -234,7 +234,7 @@ BOOL LLFontFreetype::loadFace(const std::string& filename, F32 point_size, F32 v
         clearFontStreams();
 #endif
         mFTFace = NULL;
-        return FALSE;
+        return false;
     }
 
     F32 y_max, y_min, x_max, x_min;
@@ -281,7 +281,7 @@ BOOL LLFontFreetype::loadFace(const std::string& filename, F32 point_size, F32 v
         mStyle |= LLFontGL::ITALIC;
     }
 
-    return TRUE;
+    return true;
 }
 
 S32 LLFontFreetype::getNumFaces(const std::string& filename)
@@ -330,7 +330,7 @@ S32 LLFontFreetype::ftOpenFace(const std::string& filename, S32 face_n)
         pFtStream = new LLFT_Stream();
         pFtStream->base = 0;
         pFtStream->pos = 0;
-        pFtStream->size = file_size;
+        pFtStream->size = static_cast<unsigned long>(file_size);
         pFtStream->descriptor.pointer = pFileStream;
         pFtStream->read = ft_read_cb;
         pFtStream->close = ft_close_cb;
@@ -443,7 +443,7 @@ F32 LLFontFreetype::getXKerning(const LLFontGlyphInfo* left_glyph_info, const LL
     return delta.x*(1.f/64.f);
 }
 
-BOOL LLFontFreetype::hasGlyph(llwchar wch) const
+bool LLFontFreetype::hasGlyph(llwchar wch) const
 {
     llassert(!mIsFallback);
     return(mCharGlyphInfoMap.find(wch) != mCharGlyphInfoMap.end());
@@ -853,6 +853,7 @@ bool LLFontFreetype::setSubImageBGRA(U32 x, U32 y, U32 bitmap_num, U16 width, U1
 void LLFontFreetype::setSubImageLuminanceAlpha(U32 x, U32 y, U32 bitmap_num, U32 width, U32 height, U8 *data, S32 stride) const
 {
     LLImageRaw *image_raw = mFontBitmapCachep->getImageRaw(EFontGlyphType::Grayscale, bitmap_num);
+    LLImageDataLock lock(image_raw);
 
     llassert(!mIsFallback);
     llassert(image_raw && (image_raw->getComponents() == 2));
diff --git a/indra/llrender/llfontfreetype.h b/indra/llrender/llfontfreetype.h
index 19112830a4..eba89f5def 100644
--- a/indra/llrender/llfontfreetype.h
+++ b/indra/llrender/llfontfreetype.h
@@ -86,7 +86,7 @@ public:
 
     // is_fallback should be true for fallback fonts that aren't used
     // to render directly (Unicode backup, primarily)
-    BOOL loadFace(const std::string& filename, F32 point_size, F32 vert_dpi, F32 horz_dpi, bool is_fallback, S32 face_n);
+    bool loadFace(const std::string& filename, F32 point_size, F32 vert_dpi, F32 horz_dpi, bool is_fallback, S32 face_n);
 
     S32 getNumFaces(const std::string& filename);
 
@@ -153,7 +153,7 @@ private:
     void resetBitmapCache();
     void setSubImageLuminanceAlpha(U32 x, U32 y, U32 bitmap_num, U32 width, U32 height, U8 *data, S32 stride = 0) const;
     bool setSubImageBGRA(U32 x, U32 y, U32 bitmap_num, U16 width, U16 height, const U8* data, U32 stride) const;
-    BOOL hasGlyph(llwchar wch) const;       // Has a glyph for this character
+    bool hasGlyph(llwchar wch) const;       // Has a glyph for this character
     LLFontGlyphInfo* addGlyph(llwchar wch, EFontGlyphType glyph_type) const;        // Add a new character to the font if necessary
     LLFontGlyphInfo* addGlyphFromFont(const LLFontFreetype *fontp, llwchar wch, U32 glyph_index, EFontGlyphType bitmap_type) const; // Add a glyph from this font to the other (returns the glyph_index, 0 if not found)
     void renderGlyph(EFontGlyphType bitmap_type, U32 glyph_index) const;
@@ -175,7 +175,7 @@ private:
     LLFT_Stream *pFtStream;
 #endif
 
-    BOOL mIsFallback;
+    bool mIsFallback;
     typedef std::pair<LLPointer<LLFontFreetype>, char_functor_t> fallback_font_t;
     typedef std::vector<fallback_font_t> fallback_font_vector_t;
     fallback_font_vector_t mFallbackFonts; // A list of fallback fonts to look for glyphs in (for Unicode chars)
diff --git a/indra/llrender/llfontfreetypesvg.h b/indra/llrender/llfontfreetypesvg.h
index 62aefd10b5..94b83d5fff 100644
--- a/indra/llrender/llfontfreetypesvg.h
+++ b/indra/llrender/llfontfreetypesvg.h
@@ -50,7 +50,7 @@ public:
     //   - right before the svg module calls the render callback hook. (with cache == true)
     static FT_Error OnPresetGlypthSlot(FT_GlyphSlot glyph_slot, FT_Bool cache, FT_Pointer* state);
 
-    // Called to render an OT-SVG glyph (right after the preset hook OnPresetGlypthSlot was called with cache set to TRUE)
+    // Called to render an OT-SVG glyph (right after the preset hook OnPresetGlypthSlot was called with cache set to true)
     static FT_Error OnRender(FT_GlyphSlot glyph_slot, FT_Pointer* state);
 
     // Called to deallocate our per glyph slot data
diff --git a/indra/llrender/llfontgl.cpp b/indra/llrender/llfontgl.cpp
index 2ac2615c0a..9482987970 100644
--- a/indra/llrender/llfontgl.cpp
+++ b/indra/llrender/llfontgl.cpp
@@ -58,7 +58,7 @@ F32 LLFontGL::sVertDPI = 96.f;
 F32 LLFontGL::sHorizDPI = 96.f;
 F32 LLFontGL::sScaleX = 1.f;
 F32 LLFontGL::sScaleY = 1.f;
-BOOL LLFontGL::sDisplayFont = TRUE ;
+bool LLFontGL::sDisplayFont = true ;
 std::string LLFontGL::sAppDir;
 
 LLColor4 LLFontGL::sShadowColor(0.f, 0.f, 0.f, 1.f);
@@ -89,7 +89,7 @@ void LLFontGL::destroyGL()
     mFontFreetype->destroyGL();
 }
 
-BOOL LLFontGL::loadFace(const std::string& filename, F32 point_size, const F32 vert_dpi, const F32 horz_dpi, bool is_fallback, S32 face_n)
+bool LLFontGL::loadFace(const std::string& filename, F32 point_size, const F32 vert_dpi, const F32 horz_dpi, bool is_fallback, S32 face_n)
 {
     if(mFontFreetype == reinterpret_cast<LLFontFreetype*>(NULL))
     {
@@ -110,14 +110,14 @@ S32 LLFontGL::getNumFaces(const std::string& filename)
 }
 
 S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, const LLRect& rect, const LLColor4 &color, HAlign halign, VAlign valign, U8 style,
-    ShadowType shadow, S32 max_chars, F32* right_x, BOOL use_ellipses, BOOL use_color) const
+    ShadowType shadow, S32 max_chars, F32* right_x, bool use_ellipses, bool use_color) const
 {
     LLRectf rect_float(rect.mLeft, rect.mTop, rect.mRight, rect.mBottom);
     return render(wstr, begin_offset, rect_float, color, halign, valign, style, shadow, max_chars, right_x, use_ellipses, use_color);
 }
 
 S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, const LLRectf& rect, const LLColor4 &color, HAlign halign, VAlign valign, U8 style,
-                     ShadowType shadow, S32 max_chars, F32* right_x, BOOL use_ellipses, BOOL use_color) const
+                     ShadowType shadow, S32 max_chars, F32* right_x, bool use_ellipses, bool use_color) const
 {
     F32 x = rect.mLeft;
     F32 y = 0.f;
@@ -143,13 +143,13 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, const LLRectf& rec
 
 
 S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, const LLColor4 &color, HAlign halign, VAlign valign, U8 style,
-                     ShadowType shadow, S32 max_chars, S32 max_pixels, F32* right_x, BOOL use_ellipses, BOOL use_color) const
+                     ShadowType shadow, S32 max_chars, S32 max_pixels, F32* right_x, bool use_ellipses, bool use_color) const
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
 
     if(!sDisplayFont) //do not display texts
     {
-        return wstr.length() ;
+        return static_cast<S32>(wstr.length());
     }
 
     if (wstr.empty())
@@ -254,7 +254,7 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
 
     const S32 LAST_CHARACTER = LLFontFreetype::LAST_CHAR_FULL;
 
-    BOOL draw_ellipses = FALSE;
+    bool draw_ellipses = false;
     if (use_ellipses)
     {
         // check for too long of a string
@@ -264,7 +264,7 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
             // use four dots for ellipsis width to generate padding
             const LLWString dots(utf8str_to_wstring(std::string("....")));
             scaled_max_pixels = llmax(0, scaled_max_pixels - ll_round(getWidthF32(dots.c_str())));
-            draw_ellipses = TRUE;
+            draw_ellipses = true;
         }
     }
 
@@ -278,7 +278,7 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
     LLColor4U text_color(color);
     // Preserve the transparency to render fading emojis in fading text (e.g.
     // for the chat console)... HB
-    LLColor4U emoji_color(255, 255, 255, text_color.mV[VW]);
+    LLColor4U emoji_color(255, 255, 255, text_color.mV[VALPHA]);
 
     std::pair<EFontGlyphType, S32> bitmap_entry = std::make_pair(EFontGlyphType::Grayscale, -1);
     S32 glyph_count = 0;
@@ -414,7 +414,7 @@ S32 LLFontGL::render(const LLWString &wstr, S32 begin_offset, F32 x, F32 y, cons
                 shadow,
                 S32_MAX, max_pixels,
                 right_x,
-                FALSE,
+                false,
                 use_color);
         gGL.popUIMatrix();
     }
@@ -429,7 +429,7 @@ S32 LLFontGL::render(const LLWString &text, S32 begin_offset, F32 x, F32 y, cons
     return render(text, begin_offset, x, y, color, LEFT, BASELINE, NORMAL, NO_SHADOW);
 }
 
-S32 LLFontGL::renderUTF8(const std::string &text, S32 begin_offset, F32 x, F32 y, const LLColor4 &color, HAlign halign, VAlign valign, U8 style, ShadowType shadow, S32 max_chars, S32 max_pixels, F32* right_x, BOOL use_ellipses, BOOL use_color) const
+S32 LLFontGL::renderUTF8(const std::string &text, S32 begin_offset, F32 x, F32 y, const LLColor4 &color, HAlign halign, VAlign valign, U8 style, ShadowType shadow, S32 max_chars, S32 max_pixels, F32* right_x, bool use_ellipses, bool use_color) const
 {
     return render(utf8str_to_wstring(text), begin_offset, x, y, color, halign, valign, style, shadow, max_chars, max_pixels, right_x, use_ellipses, use_color);
 }
@@ -578,11 +578,11 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
     llassert(max_pixels >= 0.f);
     llassert(max_chars >= 0);
 
-    BOOL clip = FALSE;
+    bool clip = false;
     F32 cur_x = 0;
 
     S32 start_of_last_word = 0;
-    BOOL in_word = FALSE;
+    bool in_word = false;
 
     // avoid S32 overflow when max_pixels == S32_MAX by staying in floating point
     F32 scaled_max_pixels = max_pixels * sScaleX;
@@ -607,18 +607,18 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
             {
                 if(wch !=(0x00A0))
                 {
-                    in_word = FALSE;
+                    in_word = false;
                 }
             }
             if (iswindividual(wch))
             {
                 if (iswpunct(wchars[i+1]))
                 {
-                    in_word=TRUE;
+                    in_word=true;
                 }
                 else
                 {
-                    in_word=FALSE;
+                    in_word=false;
                     start_of_last_word = i;
                 }
             }
@@ -628,7 +628,7 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
             start_of_last_word = i;
             if (!iswspace(wch)||!iswindividual(wch))
             {
-                in_word = TRUE;
+                in_word = true;
             }
         }
 
@@ -654,7 +654,7 @@ S32 LLFontGL::maxDrawableChars(const llwchar* wchars, F32 max_pixels, S32 max_ch
         // clip if current character runs past scaled_max_pixels (using width_padding)
         if (scaled_max_pixels < cur_x + width_padding)
         {
-            clip = TRUE;
+            clip = true;
             break;
         }
 
@@ -752,7 +752,7 @@ S32 LLFontGL::firstDrawableChar(const llwchar* wchars, F32 max_pixels, S32 text_
 
 }
 
-S32 LLFontGL::charFromPixelOffset(const llwchar* wchars, S32 begin_offset, F32 target_x, F32 max_pixels, S32 max_chars, BOOL round) const
+S32 LLFontGL::charFromPixelOffset(const llwchar* wchars, S32 begin_offset, F32 target_x, F32 max_pixels, S32 max_chars, bool round) const
 {
     if (!wchars || !wchars[0] || max_chars == 0)
     {
@@ -1164,7 +1164,7 @@ LLFontGL* LLFontGL::getFontDefault()
 std::string LLFontGL::getFontPathSystem()
 {
 #if LL_DARWIN
-    // HACK for Mac OS X
+    // HACK for macOS
     return "/System/Library/Fonts/";
 
 #elif LL_WINDOWS
diff --git a/indra/llrender/llfontgl.h b/indra/llrender/llfontgl.h
index 81674f4a64..4bb6c55c65 100644
--- a/indra/llrender/llfontgl.h
+++ b/indra/llrender/llfontgl.h
@@ -87,7 +87,7 @@ public:
 
     void destroyGL();
 
-    BOOL loadFace(const std::string& filename, F32 point_size, const F32 vert_dpi, const F32 horz_dpi, bool is_fallback, S32 face_n);
+    bool loadFace(const std::string& filename, F32 point_size, const F32 vert_dpi, const F32 horz_dpi, bool is_fallback, S32 face_n);
 
     S32 getNumFaces(const std::string& filename);
 
@@ -98,8 +98,8 @@ public:
                 U8 style = NORMAL, ShadowType shadow = NO_SHADOW,
                 S32 max_chars = S32_MAX,
                 F32* right_x=NULL,
-                BOOL use_ellipses = FALSE,
-                BOOL use_color = TRUE) const;
+                bool use_ellipses = false,
+                bool use_color = true) const;
 
     S32 render(const LLWString &text, S32 begin_offset,
                 const LLRectf& rect,
@@ -108,8 +108,8 @@ public:
                 U8 style = NORMAL, ShadowType shadow = NO_SHADOW,
                 S32 max_chars = S32_MAX,
                 F32* right_x=NULL,
-                BOOL use_ellipses = FALSE,
-                BOOL use_color = TRUE) const;
+                bool use_ellipses = false,
+                bool use_color = true) const;
 
     S32 render(const LLWString &text, S32 begin_offset,
                 F32 x, F32 y,
@@ -118,13 +118,13 @@ public:
                 U8 style = NORMAL, ShadowType shadow = NO_SHADOW,
                 S32 max_chars = S32_MAX, S32 max_pixels = S32_MAX,
                 F32* right_x=NULL,
-                BOOL use_ellipses = FALSE,
-                BOOL use_color = TRUE) const;
+                bool use_ellipses = false,
+                bool use_color = true) const;
 
     S32 render(const LLWString &text, S32 begin_offset, F32 x, F32 y, const LLColor4 &color) const;
 
     // renderUTF8 does a conversion, so is slower!
-    S32 renderUTF8(const std::string &text, S32 begin_offset, F32 x, F32 y, const LLColor4 &color, HAlign halign,  VAlign valign, U8 style, ShadowType shadow, S32 max_chars = S32_MAX, S32 max_pixels = S32_MAX,  F32* right_x = NULL, BOOL use_ellipses = FALSE, BOOL use_color = TRUE) const;
+    S32 renderUTF8(const std::string &text, S32 begin_offset, F32 x, F32 y, const LLColor4 &color, HAlign halign,  VAlign valign, U8 style, ShadowType shadow, S32 max_chars = S32_MAX, S32 max_pixels = S32_MAX,  F32* right_x = NULL, bool use_ellipses = false, bool use_color = true) const;
     S32 renderUTF8(const std::string &text, S32 begin_offset, S32 x, S32 y, const LLColor4 &color) const;
     S32 renderUTF8(const std::string &text, S32 begin_offset, S32 x, S32 y, const LLColor4 &color, HAlign halign, VAlign valign, U8 style = NORMAL, ShadowType shadow = NO_SHADOW) const;
 
@@ -159,7 +159,7 @@ public:
     S32 firstDrawableChar(const llwchar* wchars, F32 max_pixels, S32 text_len, S32 start_pos=S32_MAX, S32 max_chars = S32_MAX) const;
 
     // Returns the index of the character closest to pixel position x (ignoring text to the right of max_pixels and max_chars)
-    S32 charFromPixelOffset(const llwchar* wchars, S32 char_offset, F32 x, F32 max_pixels=F32_MAX, S32 max_chars = S32_MAX, BOOL round = TRUE) const;
+    S32 charFromPixelOffset(const llwchar* wchars, S32 char_offset, F32 x, F32 max_pixels=F32_MAX, S32 max_chars = S32_MAX, bool round = true) const;
 
     const LLFontDescriptor& getFontDesc() const;
 
@@ -192,7 +192,7 @@ public:
     static std::string nameFromVAlign(LLFontGL::VAlign align);
     static LLFontGL::VAlign vAlignFromName(const std::string& name);
 
-    static void setFontDisplay(BOOL flag) { sDisplayFont = flag; }
+    static void setFontDisplay(bool flag) { sDisplayFont = flag; }
 
     static LLFontGL* getFontEmojiSmall();
     static LLFontGL* getFontEmojiMedium();
@@ -224,7 +224,7 @@ public:
     static F32 sHorizDPI;
     static F32 sScaleX;
     static F32 sScaleY;
-    static BOOL sDisplayFont ;
+    static bool sDisplayFont ;
     static std::string sAppDir;         // For loading fonts
 
 private:
diff --git a/indra/llrender/llfontregistry.cpp b/indra/llrender/llfontregistry.cpp
index 546211aac8..62f4f35e3d 100644
--- a/indra/llrender/llfontregistry.cpp
+++ b/indra/llrender/llfontregistry.cpp
@@ -297,7 +297,7 @@ bool font_desc_init_from_xml(LLXMLNodePtr node, LLFontDescriptor& desc)
 
             if (child->hasAttribute("load_collection"))
             {
-                BOOL col = FALSE;
+                bool col = false;
                 child->getAttributeBOOL("load_collection", col);
                 if (col)
                 {
@@ -475,7 +475,7 @@ LLFontGL *LLFontRegistry::createFont(const LLFontDescriptor& desc)
 
     // The first font will get pulled will be the "head" font, set to non-fallback.
     // Rest will consitute the fallback list.
-    BOOL is_first_found = TRUE;
+    bool is_first_found = true;
 
     string_vec_t font_search_paths;
     font_search_paths.push_back(LLFontGL::getFontPathLocal());
@@ -499,7 +499,7 @@ LLFontGL *LLFontRegistry::createFont(const LLFontDescriptor& desc)
 
         // *HACK: Fallback fonts don't render, so we can use that to suppress
         // creation of OpenGL textures for test apps. JC
-        BOOL is_fallback = !is_first_found || !mCreateGLTextures;
+        bool is_fallback = !is_first_found || !mCreateGLTextures;
         F32 extra_scale = (is_fallback)?fallback_scale:1.0;
         F32 point_size_scale = extra_scale * point_size;
         bool is_font_loaded = false;
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index c592d7d3e2..2a7cc3d141 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -64,12 +64,12 @@ extern LLControlGroup gSavedSettings;
 #endif
 
 
-BOOL gDebugSession = FALSE;
-BOOL gDebugGLSession = FALSE;
-BOOL gClothRipple = FALSE;
-BOOL gHeadlessClient = FALSE;
-BOOL gNonInteractive = FALSE;
-BOOL gGLActive = FALSE;
+bool gDebugSession = false;
+bool gDebugGLSession = false;
+bool gClothRipple = false;
+bool gHeadlessClient = false;
+bool gNonInteractive = false;
+bool gGLActive = false;
 
 static const std::string HEADLESS_VENDOR_STRING("Linden Lab");
 static const std::string HEADLESS_RENDERER_STRING("Headless");
@@ -991,22 +991,22 @@ PFNGLPOLYGONOFFSETCLAMPPROC              glPolygonOffsetClamp = nullptr;
 LLGLManager gGLManager;
 
 LLGLManager::LLGLManager() :
-    mInited(FALSE),
-    mIsDisabled(FALSE),
+    mInited(false),
+    mIsDisabled(false),
     mMaxSamples(0),
     mNumTextureImageUnits(1),
     mMaxSampleMaskWords(0),
     mMaxColorTextureSamples(0),
     mMaxDepthTextureSamples(0),
     mMaxIntegerSamples(0),
-    mIsAMD(FALSE),
-    mIsNVIDIA(FALSE),
-    mIsIntel(FALSE),
-    mIsApple(FALSE),
+    mIsAMD(false),
+    mIsNVIDIA(false),
+    mIsIntel(false),
+    mIsApple(false),
 #if LL_DARWIN
-    mIsMobileGF(FALSE),
+    mIsMobileGF(false),
 #endif
-    mHasRequirements(TRUE),
+    mHasRequirements(true),
     mDriverVersionMajor(1),
     mDriverVersionMinor(0),
     mDriverVersionRelease(0),
@@ -1158,12 +1158,12 @@ bool LLGLManager::initGL()
     {
         mGLVendorShort = "AMD";
         // *TODO: Fix this?
-        mIsAMD = TRUE;
+        mIsAMD = true;
     }
     else if (mGLVendor.find("NVIDIA ") != std::string::npos)
     {
         mGLVendorShort = "NVIDIA";
-        mIsNVIDIA = TRUE;
+        mIsNVIDIA = true;
     }
     else if (mGLVendor.find("INTEL") != std::string::npos
 #if LL_LINUX || __FreeBSD__
@@ -1174,7 +1174,7 @@ bool LLGLManager::initGL()
          )
     {
         mGLVendorShort = "INTEL";
-        mIsIntel = TRUE;
+        mIsIntel = true;
     }
     else if(mGLVendor.find("APPLE") != std::string::npos)
     {
@@ -1189,7 +1189,7 @@ bool LLGLManager::initGL()
     // This is called here because it depends on the setting of mIsGF2or4MX, and sets up mHasMultitexture.
     initExtensions();
 
-    S32 old_vram = mVRAM;
+    U32 old_vram = mVRAM;
     mVRAM = 0;
 
 #if LL_WINDOWS
@@ -1231,7 +1231,7 @@ bool LLGLManager::initGL()
         // Function will check all GPUs WMI knows of and will pick up the one with most
         // memory. We need to check all GPUs because system can switch active GPU to
         // weaker one, to preserve power when not under load.
-        S32 mem = LLDXHardware::getMBVideoMemoryViaWMI();
+        U32 mem = LLDXHardware::getMBVideoMemoryViaWMI();
         if (mem != 0)
         {
             mVRAM = mem;
@@ -1256,6 +1256,11 @@ bool LLGLManager::initGL()
     glGetIntegerv(GL_MAX_SAMPLE_MASK_WORDS, &mMaxSampleMaskWords);
 #endif
     glGetIntegerv(GL_MAX_SAMPLES, &mMaxSamples);
+    glGetIntegerv(GL_MAX_UNIFORM_BLOCK_SIZE, &mMaxUniformBlockSize);
+
+    // sanity clamp max uniform block size to 64k just in case
+    // there's some implementation that reports a crazy value
+    mMaxUniformBlockSize = llmin(mMaxUniformBlockSize, 65536);
 
     if (mGLVersion >= 4.59f)
     {
@@ -1375,7 +1380,7 @@ void LLGLManager::asLLSD(LLSD& info)
     info["gpu_version"] = mDriverVersionVendorString;
     info["opengl_version"] = mGLVersionString;
 
-    info["vram"] = mVRAM;
+    info["vram"] = LLSD::Integer(mVRAM);
 
     // OpenGL limits
     info["max_samples"] = mMaxSamples;
@@ -1403,12 +1408,12 @@ void LLGLManager::shutdownGL()
     {
         glFinish();
         stop_glerror();
-        mInited = FALSE;
+        mInited = false;
     }
 }
 
 // these are used to turn software blending on. They appear in the Debug/Avatar menu
-// presence of vertex skinning/blending or vertex programs will set these to FALSE by default.
+// presence of vertex skinning/blending or vertex programs will set these to false by default.
 
 void LLGLManager::initExtensions()
 {
@@ -1443,7 +1448,7 @@ void LLGLManager::initExtensions()
     glGetIntegerv(GL_MAX_ELEMENTS_INDICES, (GLint*) &mGLMaxIndexRange);
     glGetIntegerv(GL_MAX_TEXTURE_SIZE, (GLint*) &mGLMaxTextureSize);
 
-    mInited = TRUE;
+    mInited = true;
 
 /*
 #if LL_WINDOWS
@@ -2332,10 +2337,10 @@ void do_assert_glerror()
     //  Create or update texture to be used with this data
     GLenum error;
     error = glGetError();
-    BOOL quit = FALSE;
+    bool quit = false;
     if (LL_UNLIKELY(error))
     {
-        quit = TRUE;
+        quit = true;
 #if GLU_VERSION_1_1
         GLubyte const * gl_error_msg = gluErrorString(error);
         if (NULL != gl_error_msg)
@@ -2461,7 +2466,7 @@ void LLGLState::dumpStates()
     for (boost::unordered_map<LLGLenum, LLGLboolean>::iterator iter = sStateMap.begin();
          iter != sStateMap.end(); ++iter)
     {
-        LL_INFOS("RenderState") << llformat(" 0x%04x : %s",(S32)iter->first,iter->second?"TRUE":"FALSE") << LL_ENDL;
+        LL_INFOS("RenderState") << llformat(" 0x%04x : %s",(S32)iter->first,iter->second?"true":"false") << LL_ENDL;
     }
 }
 
@@ -2504,7 +2509,7 @@ void LLGLState::checkStates(GLboolean writeAlpha)
 ///////////////////////////////////////////////////////////////////////
 
 LLGLState::LLGLState(LLGLenum state, S32 enabled) :
-    mState(state), mWasEnabled(FALSE), mIsEnabled(FALSE)
+    mState(state), mWasEnabled(false), mIsEnabled(false)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_PIPELINE;
 
@@ -2523,15 +2528,15 @@ void LLGLState::setEnabled(S32 enabled)
     }
     if (enabled == CURRENT_STATE)
     {
-        enabled = sStateMap[mState] == GL_TRUE ? TRUE : FALSE;
+        enabled = sStateMap[mState] == GL_TRUE ? ENABLED_STATE : DISABLED_STATE;
     }
-    else if (enabled == TRUE && sStateMap[mState] != GL_TRUE)
+    else if (enabled == ENABLED_STATE && sStateMap[mState] != GL_TRUE)
     {
         gGL.flush();
         glEnable(mState);
         sStateMap[mState] = GL_TRUE;
     }
-    else if (enabled == FALSE && sStateMap[mState] != GL_FALSE)
+    else if (enabled == DISABLED_STATE && sStateMap[mState] != GL_FALSE)
     {
         gGL.flush();
         glDisable(mState);
@@ -2786,7 +2791,7 @@ LLGLDepthTest::LLGLDepthTest(GLboolean depth_enabled, GLboolean write_enabled, G
     { // always disable depth writes if depth testing is disabled
       // GL spec defines this as a requirement, but some implementations allow depth writes with testing disabled
       // The proper way to write to depth buffer with testing disabled is to enable testing and use a depth_func of GL_ALWAYS
-        write_enabled = FALSE;
+        write_enabled = GL_FALSE;
     }
 
     if (depth_enabled != sDepthEnabled)
@@ -2839,7 +2844,7 @@ void LLGLDepthTest::checkState()
     if (gDebugGL)
     {
         GLint func = 0;
-        GLboolean mask = FALSE;
+        GLboolean mask = GL_FALSE;
 
         glGetIntegerv(GL_DEPTH_FUNC, &func);
         glGetBooleanv(GL_DEPTH_WRITEMASK, &mask);
diff --git a/indra/llrender/llgl.h b/indra/llrender/llgl.h
index e4b106c999..a3d87e001c 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -45,9 +45,9 @@
 #include "llglheaders.h"
 #include "glh/glh_linear.h"
 
-extern BOOL gDebugGL;
-extern BOOL gDebugSession;
-extern BOOL gDebugGLSession;
+extern bool gDebugGL;
+extern bool gDebugSession;
+extern bool gDebugGLSession;
 extern llofstream gFailLog;
 
 #define LL_GL_ERRS LL_ERRS("RenderState")
@@ -73,8 +73,8 @@ public:
 
     std::string getRawGLString(); // For sending to simulator
 
-    BOOL mInited;
-    BOOL mIsDisabled;
+    bool mInited;
+    bool mIsDisabled;
 
     // OpenGL limits
     S32 mMaxSamples;
@@ -87,6 +87,7 @@ public:
     S32 mGLMaxIndexRange;
     S32 mGLMaxTextureSize;
     F32 mMaxAnisotropy = 0.f;
+    S32 mMaxUniformBlockSize = 0;
 
     // GL 4.x capabilities
     bool mHasCubeMapArray = false;
@@ -97,18 +98,18 @@ public:
     // Vendor-specific extensions
     bool mHasAMDAssociations = false;
 
-    BOOL mIsAMD;
-    BOOL mIsNVIDIA;
-    BOOL mIsIntel;
-    BOOL mIsApple;
+    bool mIsAMD;
+    bool mIsNVIDIA;
+    bool mIsIntel;
+    bool mIsApple;
 
 #if LL_DARWIN
     // Needed to distinguish problem cards on older Macs that break with Materials
-    BOOL mIsMobileGF;
+    bool mIsMobileGF;
 #endif
 
     // Whether this version of GL is good enough for SL to use
-    BOOL mHasRequirements;
+    bool mHasRequirements;
 
     S32 mDriverVersionMajor;
     S32 mDriverVersionMinor;
@@ -119,9 +120,7 @@ public:
     std::string mDriverVersionVendorString;
     std::string mGLVersionString;
 
-    S32 mVRAM; // VRAM in MB
-
-    void getPixelFormat(); // Get the best pixel format
+    U32 mVRAM; // VRAM in MB
 
     std::string getGLInfoString();
     void printGLInfoString();
@@ -139,7 +138,6 @@ public:
 private:
     void initExtensions();
     void initGLStates();
-    void initGLImages();
 };
 
 extern LLGLManager gGLManager;
@@ -156,13 +154,18 @@ void assert_glerror();
 
 void clear_glerror();
 
-//#if LL_DEBUG
+
 # define stop_glerror() assert_glerror()
 # define llglassertok() assert_glerror()
-//#else
-//# define stop_glerror()
-//# define llglassertok()
-//#endif
+
+// stop_glerror is still needed on OS X but has performance implications
+// use macro below to conditionally add stop_glerror to non-release builds
+// on OS X
+#if LL_DARWIN && !LL_RELEASE_FOR_DOWNLOAD
+#define STOP_GLERROR stop_glerror()
+#else
+#define STOP_GLERROR
+#endif
 
 #define llglassertok_always() assert_glerror()
 
@@ -242,16 +245,16 @@ protected:
     static boost::unordered_map<LLGLenum, LLGLboolean> sStateMap;
 
 public:
-    enum { CURRENT_STATE = -2 };
+    enum { CURRENT_STATE = -2, DISABLED_STATE = 0, ENABLED_STATE = 1 };
     LLGLState(LLGLenum state, S32 enabled = CURRENT_STATE);
     ~LLGLState();
     void setEnabled(S32 enabled);
-    void enable() { setEnabled(TRUE); }
-    void disable() { setEnabled(FALSE); }
+    void enable() { setEnabled(ENABLED_STATE); }
+    void disable() { setEnabled(DISABLED_STATE); }
 protected:
     LLGLenum mState;
-    BOOL mWasEnabled;
-    BOOL mIsEnabled;
+    bool mWasEnabled;
+    bool mIsEnabled;
 };
 
 // New LLGLState class wrappers that don't depend on actual GL flags.
@@ -285,14 +288,14 @@ public:
 class LLGLEnable : public LLGLState
 {
 public:
-    LLGLEnable(LLGLenum state) : LLGLState(state, TRUE) {}
+    LLGLEnable(LLGLenum state) : LLGLState(state, ENABLED_STATE) {}
 };
 
 /// TODO: Being deprecated.
 class LLGLDisable : public LLGLState
 {
 public:
-    LLGLDisable(LLGLenum state) : LLGLState(state, FALSE) {}
+    LLGLDisable(LLGLenum state) : LLGLState(state, DISABLED_STATE) {}
 };
 
 /*
@@ -352,9 +355,9 @@ public:
 
     static std::list<LLGLUpdate*> sGLQ;
 
-    BOOL mInQ;
+    bool mInQ;
     LLGLUpdate()
-        : mInQ(FALSE)
+        : mInQ(false)
     {
     }
     virtual ~LLGLUpdate()
@@ -406,10 +409,10 @@ void init_glstates();
 
 void parse_gl_version( S32* major, S32* minor, S32* release, std::string* vendor_specific, std::string* version_string );
 
-extern BOOL gClothRipple;
-extern BOOL gHeadlessClient;
-extern BOOL gNonInteractive;
-extern BOOL gGLActive;
+extern bool gClothRipple;
+extern bool gHeadlessClient;
+extern bool gNonInteractive;
+extern bool gGLActive;
 
 // Deal with changing glext.h definitions for newer SDK versions, specifically
 // with MAC OSX 10.5 -> 10.6
diff --git a/indra/llrender/llglslshader.cpp b/indra/llrender/llglslshader.cpp
index 0c1519824c..880b491253 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -54,6 +54,8 @@ using std::string;
 GLuint LLGLSLShader::sCurBoundShader = 0;
 LLGLSLShader* LLGLSLShader::sCurBoundShaderPtr = NULL;
 S32 LLGLSLShader::sIndexedTextureChannels = 0;
+U32 LLGLSLShader::sMaxGLTFMaterials = 0;
+U32 LLGLSLShader::sMaxGLTFNodes = 0;
 bool LLGLSLShader::sProfileEnabled = false;
 std::set<LLGLSLShader*> LLGLSLShader::sInstances;
 LLGLSLShader::defines_map_t LLGLSLShader::sGlobalDefines;
@@ -81,7 +83,7 @@ const std::string gShaderConstsVal[LLGLSLShader::NUM_SHADER_CONSTS] =
 };
 
 
-BOOL shouldChange(const LLVector4& v1, const LLVector4& v2)
+bool shouldChange(const LLVector4& v1, const LLVector4& v2)
 {
     return v1 != v2;
 }
@@ -339,7 +341,7 @@ LLGLSLShader::LLGLSLShader()
     mShaderLevel(0),
     mShaderGroup(SG_DEFAULT),
     mFeatures(),
-    mUniformsDirty(FALSE),
+    mUniformsDirty(false),
     mTimerQuery(0),
     mSamplesQuery(0),
     mPrimitivesQuery(0)
@@ -411,10 +413,7 @@ void LLGLSLShader::unloadInternal()
     stop_glerror();
 }
 
-BOOL LLGLSLShader::createShader(std::vector<LLStaticHashedString>* attributes,
-    std::vector<LLStaticHashedString>* uniforms,
-    U32 varying_count,
-    const char** varyings)
+bool LLGLSLShader::createShader()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_SHADER;
 
@@ -445,10 +444,10 @@ BOOL LLGLSLShader::createShader(std::vector<LLStaticHashedString>* attributes,
         // Shouldn't happen if shader related extensions, like ARB_vertex_shader, exist.
         LL_SHADER_LOADING_WARNS() << "Failed to create handle for shader: " << mName << LL_ENDL;
         unloadInternal();
-        return FALSE;
+        return false;
     }
 
-    BOOL success = TRUE;
+    bool success = true;
 
     mUsingBinaryProgram =  LLShaderMgr::instance()->loadCachedProgramBinary(this);
 
@@ -470,7 +469,7 @@ BOOL LLGLSLShader::createShader(std::vector<LLStaticHashedString>* attributes,
             }
             else
             {
-                success = FALSE;
+                success = false;
             }
         }
     }
@@ -479,16 +478,16 @@ BOOL LLGLSLShader::createShader(std::vector<LLStaticHashedString>* attributes,
     if (!LLShaderMgr::instance()->attachShaderFeatures(this))
     {
         unloadInternal();
-        return FALSE;
+        return false;
     }
     // Map attributes and uniforms
     if (success)
     {
-        success = mapAttributes(attributes);
+        success = mapAttributes();
     }
     if (success)
     {
-        success = mapUniforms(uniforms);
+        success = mapUniforms();
     }
     if (!success)
     {
@@ -499,7 +498,7 @@ BOOL LLGLSLShader::createShader(std::vector<LLStaticHashedString>* attributes,
         {
             LL_SHADER_LOADING_WARNS() << "Failed to link using shader level " << mShaderLevel << " trying again using shader level " << (mShaderLevel - 1) << LL_ENDL;
             mShaderLevel--;
-            return createShader(attributes, uniforms);
+            return createShader();
         }
         else
         {
@@ -509,6 +508,7 @@ BOOL LLGLSLShader::createShader(std::vector<LLStaticHashedString>* attributes,
     }
     else if (mFeatures.mIndexedTextureChannels > 0)
     { //override texture channels for indexed texture rendering
+        llassert(mFeatures.mIndexedTextureChannels == LLGLSLShader::sIndexedTextureChannels); // these numbers must always match
         bind();
         S32 channel_count = mFeatures.mIndexedTextureChannels;
 
@@ -518,19 +518,41 @@ BOOL LLGLSLShader::createShader(std::vector<LLStaticHashedString>* attributes,
             uniform1i(uniName, i);
         }
 
-        S32 cur_tex = channel_count; //adjust any texture channels that might have been overwritten
+        //adjust any texture channels that might have been overwritten
         for (U32 i = 0; i < mTexture.size(); i++)
         {
-            if (mTexture[i] > -1 && mTexture[i] < channel_count)
+            if (mTexture[i] > -1)
             {
-                llassert(cur_tex < gGLManager.mNumTextureImageUnits);
-                uniform1i(i, cur_tex);
-                mTexture[i] = cur_tex++;
+                S32 new_tex = mTexture[i] + channel_count;
+                uniform1i(i, new_tex);
+                mTexture[i] = new_tex;
             }
         }
+
+        // get the true number of active texture channels
+        mActiveTextureChannels = channel_count;
+        for (auto& tex : mTexture)
+        {
+            mActiveTextureChannels = llmax(mActiveTextureChannels, tex + 1);
+        }
+
+        // when indexed texture channels are used, enforce an upper limit of 16
+        // this should act as a canary in the coal mine for adding textures
+        // and breaking machines that are limited to 16 texture channels
+        llassert(mActiveTextureChannels <= 16);
         unbind();
     }
 
+    LL_DEBUGS("GLSLTextureChannels") << mName << " has " << mActiveTextureChannels << " active texture channels" << LL_ENDL;
+
+    for (U32 i = 0; i < mTexture.size(); i++)
+    {
+        if (mTexture[i] > -1)
+        {
+            LL_DEBUGS("GLSLTextureChannels") << "Texture " << LLShaderMgr::instance()->mReservedUniforms[i] << " assigned to channel " << mTexture[i] << LL_ENDL;
+        }
+    }
+
 #ifdef LL_PROFILER_ENABLE_RENDER_DOC
     setLabel(mName.c_str());
 #endif
@@ -559,7 +581,7 @@ void dumpAttachObject(const char* func_name, GLuint program_object, const std::s
 }
 #endif // DEBUG_SHADER_INCLUDES
 
-BOOL LLGLSLShader::attachVertexObject(std::string object_path)
+bool LLGLSLShader::attachVertexObject(std::string object_path)
 {
     if (LLShaderMgr::instance()->mVertexShaderObjects.count(object_path) > 0)
     {
@@ -569,19 +591,19 @@ BOOL LLGLSLShader::attachVertexObject(std::string object_path)
         dumpAttachObject("attachVertexObject", mProgramObject, object_path);
 #endif // DEBUG_SHADER_INCLUDES
         stop_glerror();
-        return TRUE;
+        return true;
     }
     else
     {
         LL_SHADER_LOADING_WARNS() << "Attempting to attach shader object: '" << object_path << "' that hasn't been compiled." << LL_ENDL;
-        return FALSE;
+        return false;
     }
 }
 
-BOOL LLGLSLShader::attachFragmentObject(std::string object_path)
+bool LLGLSLShader::attachFragmentObject(std::string object_path)
 {
     if(mUsingBinaryProgram)
-        return TRUE;
+        return true;
 
     if (LLShaderMgr::instance()->mFragmentShaderObjects.count(object_path) > 0)
     {
@@ -591,12 +613,12 @@ BOOL LLGLSLShader::attachFragmentObject(std::string object_path)
         dumpAttachObject("attachFragmentObject", mProgramObject, object_path);
 #endif // DEBUG_SHADER_INCLUDES
         stop_glerror();
-        return TRUE;
+        return true;
     }
     else
     {
         LL_SHADER_LOADING_WARNS() << "Attempting to attach shader object: '" << object_path << "' that hasn't been compiled." << LL_ENDL;
-        return FALSE;
+        return false;
     }
 }
 
@@ -632,11 +654,11 @@ void LLGLSLShader::attachObjects(GLuint* objects, S32 count)
     }
 }
 
-BOOL LLGLSLShader::mapAttributes(const std::vector<LLStaticHashedString>* attributes)
+bool LLGLSLShader::mapAttributes()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_SHADER;
 
-    BOOL res = TRUE;
+    bool res = true;
     if (!mUsingBinaryProgram)
     {
         //before linking, make sure reserved attributes always have consistent locations
@@ -651,11 +673,10 @@ BOOL LLGLSLShader::mapAttributes(const std::vector<LLStaticHashedString>* attrib
     }
 
     mAttribute.clear();
-    U32 numAttributes = (attributes == NULL) ? 0 : attributes->size();
 #if LL_RELEASE_WITH_DEBUG_INFO
-    mAttribute.resize(LLShaderMgr::instance()->mReservedAttribs.size() + numAttributes, { -1, NULL });
+    mAttribute.resize(LLShaderMgr::instance()->mReservedAttribs.size(), { -1, NULL });
 #else
-    mAttribute.resize(LLShaderMgr::instance()->mReservedAttribs.size() + numAttributes, -1);
+    mAttribute.resize(LLShaderMgr::instance()->mReservedAttribs.size(), -1);
 #endif
 
     if (res)
@@ -679,27 +700,14 @@ BOOL LLGLSLShader::mapAttributes(const std::vector<LLStaticHashedString>* attrib
                 LL_DEBUGS("ShaderUniform") << "Attribute " << name << " assigned to channel " << index << LL_ENDL;
             }
         }
-        if (attributes != NULL)
-        {
-            for (U32 i = 0; i < numAttributes; i++)
-            {
-                const char* name = (*attributes)[i].String().c_str();
-                S32 index = glGetAttribLocation(mProgramObject, name);
-                if (index != -1)
-                {
-                    mAttribute[LLShaderMgr::instance()->mReservedAttribs.size() + i] = index;
-                    LL_DEBUGS("ShaderUniform") << "Attribute " << name << " assigned to channel " << index << LL_ENDL;
-                }
-            }
-        }
 
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-void LLGLSLShader::mapUniform(GLint index, const vector<LLStaticHashedString>* uniforms)
+void LLGLSLShader::mapUniform(GLint index)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_SHADER;
 
@@ -789,22 +797,11 @@ void LLGLSLShader::mapUniform(GLint index, const vector<LLStaticHashedString>* u
                 //found it
                 mUniform[i] = location;
                 mTexture[i] = mapUniformTextureChannel(location, type, size);
-                return;
-            }
-        }
-
-        if (uniforms != NULL)
-        {
-            for (U32 i = 0; i < uniforms->size(); i++)
-            {
-                if ((mUniform[i + LLShaderMgr::instance()->mReservedUniforms.size()] == -1)
-                    && ((*uniforms)[i].String() == name))
+                if (mTexture[i] != -1)
                 {
-                    //found it
-                    mUniform[i + LLShaderMgr::instance()->mReservedUniforms.size()] = location;
-                    mTexture[i + LLShaderMgr::instance()->mReservedUniforms.size()] = mapUniformTextureChannel(location, type, size);
-                    return;
+                    LL_DEBUGS("GLSLTextureChannels") << name << " assigned to texture channel " << mTexture[i] << LL_ENDL;
                 }
+                return;
             }
         }
     }
@@ -845,35 +842,31 @@ GLint LLGLSLShader::mapUniformTextureChannel(GLint location, GLenum type, GLint
         if (size == 1)
         {
             glUniform1i(location, mActiveTextureChannels);
-            LL_DEBUGS("ShaderUniform") << "Assigned to texture channel " << mActiveTextureChannels << LL_ENDL;
             mActiveTextureChannels++;
         }
         else
         {
             //is array of textures, make sequential after this texture
-            GLint channel[32]; // <=== only support up to 32 texture channels
-            llassert(size <= 32);
-            size = llmin(size, 32);
+            GLint channel[16]; // <=== only support up to 16 texture channels
+            llassert(size <= 16);
+            size = llmin(size, 16);
             for (int i = 0; i < size; ++i)
             {
                 channel[i] = mActiveTextureChannels++;
             }
             glUniform1iv(location, size, channel);
-            LL_DEBUGS("ShaderUniform") << "Assigned to texture channel " <<
-                (mActiveTextureChannels - size) << " through " << (mActiveTextureChannels - 1) << LL_ENDL;
         }
 
-        llassert(mActiveTextureChannels <= 32); // too many textures (probably)
         return ret;
     }
     return -1;
 }
 
-BOOL LLGLSLShader::mapUniforms(const vector<LLStaticHashedString>* uniforms)
+bool LLGLSLShader::mapUniforms()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_SHADER;
 
-    BOOL res = TRUE;
+    bool res = true;
 
     mTotalUniformSize = 0;
     mActiveTextureChannels = 0;
@@ -882,9 +875,8 @@ BOOL LLGLSLShader::mapUniforms(const vector<LLStaticHashedString>* uniforms)
     mTexture.clear();
     mValue.clear();
     //initialize arrays
-    U32 numUniforms = (uniforms == NULL) ? 0 : uniforms->size();
-    mUniform.resize(numUniforms + LLShaderMgr::instance()->mReservedUniforms.size(), -1);
-    mTexture.resize(numUniforms + LLShaderMgr::instance()->mReservedUniforms.size(), -1);
+    mUniform.resize(LLShaderMgr::instance()->mReservedUniforms.size(), -1);
+    mTexture.resize(LLShaderMgr::instance()->mReservedUniforms.size(), -1);
 
     bind();
 
@@ -985,26 +977,26 @@ BOOL LLGLSLShader::mapUniforms(const vector<LLStaticHashedString>* uniforms)
 
         if (specularDiff || bumpLessDiff || envLessDiff || refLessDiff)
         {
-            mapUniform(diffuseMap, uniforms);
+            mapUniform(diffuseMap);
             skip_index.insert(diffuseMap);
 
             if (-1 != specularMap) {
-                mapUniform(specularMap, uniforms);
+                mapUniform(specularMap);
                 skip_index.insert(specularMap);
             }
 
             if (-1 != bumpMap) {
-                mapUniform(bumpMap, uniforms);
+                mapUniform(bumpMap);
                 skip_index.insert(bumpMap);
             }
 
             if (-1 != environmentMap) {
-                mapUniform(environmentMap, uniforms);
+                mapUniform(environmentMap);
                 skip_index.insert(environmentMap);
             }
 
             if (-1 != reflectionMap) {
-                mapUniform(reflectionMap, uniforms);
+                mapUniform(reflectionMap);
                 skip_index.insert(reflectionMap);
             }
         }
@@ -1018,21 +1010,31 @@ BOOL LLGLSLShader::mapUniforms(const vector<LLStaticHashedString>* uniforms)
         if (skip_index.end() != skip_index.find(i)) continue;
         //........................................................................................
 
-        mapUniform(i, uniforms);
+        mapUniform(i);
     }
     //........................................................................................................................................
 
-    if (mFeatures.hasReflectionProbes) // Set up block binding, in a way supported by Apple (rather than binding = 1 in .glsl).
-    {   // See slide 35 and more of https://docs.huihoo.com/apple/wwdc/2011/session_420__advances_in_opengl_for_mac_os_x_lion.pdf
-        static const GLuint BLOCKBINDING = 1; //picked by us
-        //Get the index, similar to a uniform location
-        GLuint UBOBlockIndex = glGetUniformBlockIndex(mProgramObject, "ReflectionProbes");
+    // Set up block binding, in a way supported by Apple (rather than binding = 1 in .glsl).
+    // See slide 35 and more of https://docs.huihoo.com/apple/wwdc/2011/session_420__advances_in_opengl_for_mac_os_x_lion.pdf
+    const char* ubo_names[] =
+    {
+        "ReflectionProbes", // UB_REFLECTION_PROBES
+        "GLTFJoints",       // UB_GLTF_JOINTS
+        "GLTFNodes",        // UB_GLTF_NODES
+        "GLTFMaterials",    // UB_GLTF_MATERIALS
+    };
+
+    llassert(LL_ARRAY_SIZE(ubo_names) == NUM_UNIFORM_BLOCKS);
+
+    for (U32 i = 0; i < NUM_UNIFORM_BLOCKS; ++i)
+    {
+        GLuint UBOBlockIndex = glGetUniformBlockIndex(mProgramObject, ubo_names[i]);
         if (UBOBlockIndex != GL_INVALID_INDEX)
         {
-            //Set this index to a binding index
-            glUniformBlockBinding(mProgramObject, UBOBlockIndex, BLOCKBINDING);
+            glUniformBlockBinding(mProgramObject, UBOBlockIndex, i);
         }
     }
+
     unbind();
 
     LL_DEBUGS("ShaderUniform") << "Total Uniform Size: " << mTotalUniformSize << LL_ENDL;
@@ -1040,11 +1042,11 @@ BOOL LLGLSLShader::mapUniforms(const vector<LLStaticHashedString>* uniforms)
 }
 
 
-BOOL LLGLSLShader::link(BOOL suppress_errors)
+bool LLGLSLShader::link(bool suppress_errors)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_SHADER;
 
-    BOOL success = LLShaderMgr::instance()->linkProgramObject(mProgramObject, suppress_errors);
+    bool success = LLShaderMgr::instance()->linkProgramObject(mProgramObject, suppress_errors);
 
     if (!success && !suppress_errors)
     {
@@ -1084,10 +1086,17 @@ void LLGLSLShader::bind()
     if (mUniformsDirty)
     {
         LLShaderMgr::instance()->updateShaderUniforms(this);
-        mUniformsDirty = FALSE;
+        mUniformsDirty = false;
     }
 }
 
+void LLGLSLShader::bind(U8 variant)
+{
+    llassert(mGLTFVariants.size() == LLGLSLShader::NUM_GLTF_VARIANTS);
+    llassert(variant < LLGLSLShader::NUM_GLTF_VARIANTS);
+    mGLTFVariants[variant].bind();
+}
+
 void LLGLSLShader::bind(bool rigged)
 {
     if (rigged)
@@ -1133,7 +1142,8 @@ S32 LLGLSLShader::bindTexture(S32 uniform, LLTexture* texture, LLTexUnit::eTextu
 
     if (uniform < 0 || uniform >= (S32)mTexture.size())
     {
-        LL_SHADER_UNIFORM_ERRS() << "Uniform out of range: " << uniform << LL_ENDL;
+        LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << uniform << LL_ENDL;
+        llassert(false);
         return -1;
     }
 
@@ -1154,6 +1164,8 @@ S32 LLGLSLShader::bindTexture(S32 uniform, LLRenderTarget* texture, bool depth,
 
     if (uniform < 0 || uniform >= (S32)mTexture.size())
     {
+        LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << uniform << LL_ENDL;
+        llassert(false);
         return -1;
     }
 
@@ -1201,7 +1213,8 @@ S32 LLGLSLShader::unbindTexture(S32 uniform, LLTexUnit::eTextureType mode)
 
     if (uniform < 0 || uniform >= (S32)mTexture.size())
     {
-        LL_SHADER_UNIFORM_ERRS() << "Uniform out of range: " << uniform << LL_ENDL;
+        LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << uniform << LL_ENDL;
+        llassert(false);
         return -1;
     }
 
@@ -1226,7 +1239,8 @@ S32 LLGLSLShader::enableTexture(S32 uniform, LLTexUnit::eTextureType mode, LLTex
 
     if (uniform < 0 || uniform >= (S32)mTexture.size())
     {
-        LL_SHADER_UNIFORM_ERRS() << "Uniform out of range: " << uniform << LL_ENDL;
+        LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << uniform << LL_ENDL;
+        llassert(false);
         return -1;
     }
 
@@ -1247,7 +1261,8 @@ S32 LLGLSLShader::disableTexture(S32 uniform, LLTexUnit::eTextureType mode, LLTe
 
     if (uniform < 0 || uniform >= (S32)mTexture.size())
     {
-        LL_SHADER_UNIFORM_ERRS() << "Uniform out of range: " << uniform << LL_ENDL;
+        LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << uniform << LL_ENDL;
+        llassert(false);
         return -1;
     }
     S32 index = mTexture[uniform];
@@ -1278,7 +1293,8 @@ void LLGLSLShader::uniform1i(U32 index, GLint x)
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1303,7 +1319,8 @@ void LLGLSLShader::uniform1f(U32 index, GLfloat x)
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1338,7 +1355,8 @@ void LLGLSLShader::uniform2f(U32 index, GLfloat x, GLfloat y)
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1364,7 +1382,8 @@ void LLGLSLShader::uniform3f(U32 index, GLfloat x, GLfloat y, GLfloat z)
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1390,7 +1409,8 @@ void LLGLSLShader::uniform4f(U32 index, GLfloat x, GLfloat y, GLfloat z, GLfloat
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1416,7 +1436,8 @@ void LLGLSLShader::uniform1iv(U32 index, U32 count, const GLint* v)
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1442,7 +1463,8 @@ void LLGLSLShader::uniform4iv(U32 index, U32 count, const GLint* v)
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1469,7 +1491,8 @@ void LLGLSLShader::uniform1fv(U32 index, U32 count, const GLfloat* v)
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1495,7 +1518,8 @@ void LLGLSLShader::uniform2fv(U32 index, U32 count, const GLfloat* v)
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1521,7 +1545,8 @@ void LLGLSLShader::uniform3fv(U32 index, U32 count, const GLfloat* v)
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1547,7 +1572,8 @@ void LLGLSLShader::uniform4fv(U32 index, U32 count, const GLfloat* v)
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1574,7 +1600,8 @@ void LLGLSLShader::uniformMatrix2fv(U32 index, U32 count, GLboolean transpose, c
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1594,7 +1621,8 @@ void LLGLSLShader::uniformMatrix3fv(U32 index, U32 count, GLboolean transpose, c
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1614,7 +1642,8 @@ void LLGLSLShader::uniformMatrix3x4fv(U32 index, U32 count, GLboolean transpose,
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
@@ -1634,7 +1663,8 @@ void LLGLSLShader::uniformMatrix4fv(U32 index, U32 count, GLboolean transpose, c
     {
         if (mUniform.size() <= index)
         {
-            LL_SHADER_UNIFORM_ERRS() << "Uniform index out of bounds." << LL_ENDL;
+            LL_WARNS_ONCE("Shader") << "Uniform index out of bounds. Size: " << (S32)mUniform.size() << " index: " << index << LL_ENDL;
+            llassert(false);
             return;
         }
 
diff --git a/indra/llrender/llglslshader.h b/indra/llrender/llglslshader.h
index d7741c51bb..86e5625dca 100644
--- a/indra/llrender/llglslshader.h
+++ b/indra/llrender/llglslshader.h
@@ -44,6 +44,7 @@ public:
     bool hasTransport = false; // implies no lighting (it's possible to have neither though)
     bool hasSkinning = false;
     bool hasObjectSkinning = false;
+    bool mGLTF = false;
     bool hasAtmospherics = false;
     bool hasGamma = false;
     bool hasShadows = false;
@@ -51,7 +52,6 @@ public:
     bool hasSrgb = false;
     bool isDeferred = false;
     bool hasScreenSpaceReflections = false;
-    bool disableTextureIndex = false;
     bool hasAlphaMask = false;
     bool hasReflectionProbes = false;
     bool attachNothing = false;
@@ -69,8 +69,8 @@ public:
     template<typename T>
     struct UniformSetting
     {
-        S32 mUniform;
-        T mValue;
+        S32 mUniform{ 0 };
+        T mValue{};
     };
 
     typedef UniformSetting<S32> IntSetting;
@@ -145,6 +145,16 @@ public:
         SG_COUNT
     } eGroup;
 
+    enum UniformBlock : GLuint
+    {
+        UB_REFLECTION_PROBES,   // "ReflectionProbes"
+        UB_GLTF_JOINTS,         // "GLTFJoints"
+        UB_GLTF_NODES,          // "GLTFNodes"
+        UB_GLTF_MATERIALS,      // "GLTFMaterials"
+        NUM_UNIFORM_BLOCKS
+    };
+
+
     static std::set<LLGLSLShader*> sInstances;
     static bool sProfileEnabled;
 
@@ -155,6 +165,9 @@ public:
     static LLGLSLShader* sCurBoundShaderPtr;
     static S32 sIndexedTextureChannels;
 
+    static U32 sMaxGLTFMaterials;
+    static U32 sMaxGLTFNodes;
+
     static void initProfile();
     static void finishProfile(bool emit_report = true);
 
@@ -175,17 +188,14 @@ public:
     // If force_read is true, will force an immediate readback (severe performance penalty)
     bool readProfileQuery(bool for_runtime = false, bool force_read = false);
 
-    BOOL createShader(std::vector<LLStaticHashedString>* attributes,
-        std::vector<LLStaticHashedString>* uniforms,
-        U32 varying_count = 0,
-        const char** varyings = NULL);
-    BOOL attachFragmentObject(std::string object);
-    BOOL attachVertexObject(std::string object);
+    bool createShader();
+    bool attachFragmentObject(std::string object);
+    bool attachVertexObject(std::string object);
     void attachObject(GLuint object);
     void attachObjects(GLuint* objects = NULL, S32 count = 0);
-    BOOL mapAttributes(const std::vector<LLStaticHashedString>* attributes);
-    BOOL mapUniforms(const std::vector<LLStaticHashedString>*);
-    void mapUniform(GLint index, const std::vector<LLStaticHashedString>*);
+    bool mapAttributes();
+    bool mapUniforms();
+    void mapUniform(GLint index);
     void uniform1i(U32 index, GLint i);
     void uniform1f(U32 index, GLfloat v);
     void fastUniform1f(U32 index, GLfloat v);
@@ -252,7 +262,7 @@ public:
     S32 unbindTexture(const std::string& uniform, LLTexUnit::eTextureType mode = LLTexUnit::TT_TEXTURE);
     S32 unbindTexture(S32 uniform, LLTexUnit::eTextureType mode = LLTexUnit::TT_TEXTURE);
 
-    BOOL link(BOOL suppress_errors = FALSE);
+    bool link(bool suppress_errors = false);
     void bind();
     //helper to conditionally bind mRiggedVariant instead of this
     void bind(bool rigged);
@@ -290,7 +300,7 @@ public:
     S32 mActiveTextureChannels;
     S32 mShaderLevel;
     S32 mShaderGroup; // see LLGLSLShader::eGroup
-    BOOL mUniformsDirty;
+    bool mUniformsDirty;
     LLShaderFeatures mFeatures;
     std::vector< std::pair< std::string, GLenum > > mShaderFiles;
     std::string mName;
@@ -318,6 +328,26 @@ public:
     // this pointer should be set to whichever shader represents this shader's rigged variant
     LLGLSLShader* mRiggedVariant = nullptr;
 
+    // variants for use by GLTF renderer
+    // bit 0 = alpha mode blend (1) or opaque (0)
+    // bit 1 = rigged (1) or static (0)
+    // bit 2 = unlit (1) or lit (0)
+    // bit 3 = single (0) or multi (1) uv coordinates
+    struct GLTFVariant
+    {
+        constexpr static U8 ALPHA_BLEND = 1;
+        constexpr static U8 RIGGED = 2;
+        constexpr static U8 UNLIT = 4;
+        constexpr static U8 MULTI_UV = 8;
+    };
+
+    constexpr static U8 NUM_GLTF_VARIANTS = 16;
+
+    std::vector<LLGLSLShader> mGLTFVariants;
+
+    //helper to bind GLTF variant
+    void bind(U8 variant);
+
     // hacky flag used for optimization in LLDrawPoolAlpha
     bool mCanBindFast = false;
 
diff --git a/indra/llrender/llgltexture.cpp b/indra/llrender/llgltexture.cpp
index 104976fcc6..e614f45986 100644
--- a/indra/llrender/llgltexture.cpp
+++ b/indra/llrender/llgltexture.cpp
@@ -27,13 +27,13 @@
 #include "llgltexture.h"
 
 
-LLGLTexture::LLGLTexture(BOOL usemipmaps)
+LLGLTexture::LLGLTexture(bool usemipmaps)
 {
     init();
     mUseMipMaps = usemipmaps;
 }
 
-LLGLTexture::LLGLTexture(const U32 width, const U32 height, const U8 components, BOOL usemipmaps)
+LLGLTexture::LLGLTexture(const U32 width, const U32 height, const U8 components, bool usemipmaps)
 {
     init();
     mFullWidth = width ;
@@ -43,14 +43,14 @@ LLGLTexture::LLGLTexture(const U32 width, const U32 height, const U8 components,
     setTexelsPerImage();
 }
 
-LLGLTexture::LLGLTexture(const LLImageRaw* raw, BOOL usemipmaps)
+LLGLTexture::LLGLTexture(const LLImageRaw* raw, bool usemipmaps)
 {
     init();
     mUseMipMaps = usemipmaps ;
     // Create an empty image of the specified size and width
     mGLTexturep = new LLImageGL(raw, usemipmaps) ;
-    mFullWidth = mGLTexturep->getCurrentWidth();
-    mFullHeight = mGLTexturep->getCurrentHeight();
+    mFullWidth = mGLTexturep->getWidth();
+    mFullHeight = mGLTexturep->getHeight();
     mComponents = mGLTexturep->getComponents();
     setTexelsPerImage();
 }
@@ -67,12 +67,12 @@ void LLGLTexture::init()
     mFullWidth = 0;
     mFullHeight = 0;
     mTexelsPerImage = 0 ;
-    mUseMipMaps = FALSE ;
+    mUseMipMaps = false ;
     mComponents = 0 ;
 
     mTextureState = NO_DELETE ;
-    mDontDiscard = FALSE;
-    mNeedsGLTexture = FALSE ;
+    mDontDiscard = false;
+    mNeedsGLTexture = false ;
 }
 
 void LLGLTexture::cleanup()
@@ -141,7 +141,7 @@ LLImageGL* LLGLTexture::getGLTexture() const
     return mGLTexturep ;
 }
 
-BOOL LLGLTexture::createGLTexture()
+bool LLGLTexture::createGLTexture()
 {
     if(mGLTexturep.isNull())
     {
@@ -151,11 +151,11 @@ BOOL LLGLTexture::createGLTexture()
     return mGLTexturep->createGLTexture() ;
 }
 
-BOOL LLGLTexture::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename, BOOL to_create, S32 category, bool defer_copy, LLGLuint* tex_name)
+bool LLGLTexture::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename, bool to_create, S32 category, bool defer_copy, LLGLuint* tex_name)
 {
     llassert(mGLTexturep.notNull());
 
-    BOOL ret = mGLTexturep->createGLTexture(discard_level, imageraw, usename, to_create, category, defer_copy, tex_name) ;
+    bool ret = mGLTexturep->createGLTexture(discard_level, imageraw, usename, to_create, category, defer_copy, tex_name) ;
 
     if(ret)
     {
@@ -168,7 +168,7 @@ BOOL LLGLTexture::createGLTexture(S32 discard_level, const LLImageRaw* imageraw,
     return ret ;
 }
 
-void LLGLTexture::setExplicitFormat(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, BOOL swap_bytes)
+void LLGLTexture::setExplicitFormat(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, bool swap_bytes)
 {
     llassert(mGLTexturep.notNull()) ;
 
@@ -223,22 +223,22 @@ LLGLuint LLGLTexture::getTexName() const
     return mGLTexturep->getTexName() ;
 }
 
-BOOL LLGLTexture::hasGLTexture() const
+bool LLGLTexture::hasGLTexture() const
 {
     if(mGLTexturep.notNull())
     {
         return mGLTexturep->getHasGLTexture() ;
     }
-    return FALSE ;
+    return false ;
 }
 
-BOOL LLGLTexture::getBoundRecently() const
+bool LLGLTexture::getBoundRecently() const
 {
     if(mGLTexturep.notNull())
     {
         return mGLTexturep->getBoundRecently() ;
     }
-    return FALSE ;
+    return false ;
 }
 
 LLTexUnit::eTextureType LLGLTexture::getTarget(void) const
@@ -247,7 +247,7 @@ LLTexUnit::eTextureType LLGLTexture::getTarget(void) const
     return mGLTexturep->getTarget() ;
 }
 
-BOOL LLGLTexture::setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos, S32 width, S32 height, LLGLuint use_name)
+bool LLGLTexture::setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos, S32 width, S32 height, LLGLuint use_name)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     llassert(mGLTexturep.notNull()) ;
@@ -255,7 +255,7 @@ BOOL LLGLTexture::setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos,
     return mGLTexturep->setSubImage(imageraw, x_pos, y_pos, width, height, 0, use_name) ;
 }
 
-BOOL LLGLTexture::setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height, LLGLuint use_name)
+bool LLGLTexture::setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height, LLGLuint use_name)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     llassert(mGLTexturep.notNull()) ;
@@ -310,14 +310,14 @@ LLGLenum LLGLTexture::getPrimaryFormat() const
     return mGLTexturep->getPrimaryFormat() ;
 }
 
-BOOL LLGLTexture::getIsAlphaMask() const
+bool LLGLTexture::getIsAlphaMask() const
 {
     llassert(mGLTexturep.notNull()) ;
 
     return mGLTexturep->getIsAlphaMask() ;
 }
 
-BOOL LLGLTexture::getMask(const LLVector2 &tc)
+bool LLGLTexture::getMask(const LLVector2 &tc)
 {
     llassert(mGLTexturep.notNull()) ;
 
@@ -330,14 +330,14 @@ F32 LLGLTexture::getTimePassedSinceLastBound()
 
     return mGLTexturep->getTimePassedSinceLastBound() ;
 }
-BOOL LLGLTexture::getMissed() const
+bool LLGLTexture::getMissed() const
 {
     llassert(mGLTexturep.notNull()) ;
 
     return mGLTexturep->getMissed() ;
 }
 
-BOOL LLGLTexture::isJustBound() const
+bool LLGLTexture::isJustBound() const
 {
     llassert(mGLTexturep.notNull()) ;
 
@@ -365,7 +365,7 @@ U32 LLGLTexture::getTexelsInGLTexture() const
     return mGLTexturep->getTexelsInGLTexture() ;
 }
 
-BOOL LLGLTexture::isGLTextureCreated() const
+bool LLGLTexture::isGLTextureCreated() const
 {
     llassert(mGLTexturep.notNull()) ;
 
diff --git a/indra/llrender/llgltexture.h b/indra/llrender/llgltexture.h
index f5bef0e291..0901243f8f 100644
--- a/indra/llrender/llgltexture.h
+++ b/indra/llrender/llgltexture.h
@@ -94,9 +94,9 @@ protected:
     LOG_CLASS(LLGLTexture);
 
 public:
-    LLGLTexture(BOOL usemipmaps = TRUE);
-    LLGLTexture(const LLImageRaw* raw, BOOL usemipmaps) ;
-    LLGLTexture(const U32 width, const U32 height, const U8 components, BOOL usemipmaps) ;
+    LLGLTexture(bool usemipmaps = true);
+    LLGLTexture(const LLImageRaw* raw, bool usemipmaps) ;
+    LLGLTexture(const U32 width, const U32 height, const U8 components, bool usemipmaps) ;
 
     virtual void dump();    // debug info to LL_INFOS()
 
@@ -117,25 +117,25 @@ public:
     /*virtual*/S32         getWidth(S32 discard_level = -1) const;
     /*virtual*/S32         getHeight(S32 discard_level = -1) const;
 
-    BOOL       hasGLTexture() const ;
+    bool       hasGLTexture() const ;
     LLGLuint   getTexName() const ;
-    BOOL       createGLTexture() ;
+    bool       createGLTexture() ;
 
     // Create a GL Texture from an image raw
     // discard_level - mip level, 0 for highest resultion mip
     // imageraw - the image to copy from
     // usename - explicit GL name override
-    // to_create - set to FALSE to force gl texture to not be created
+    // to_create - set to false to force gl texture to not be created
     // category - LLGLTexture category for this LLGLTexture
     // defer_copy - set to true to allocate GL texture but NOT initialize with imageraw data
     // tex_name - if not null, will be set to the GL name of the texture created
-    BOOL       createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename = 0, BOOL to_create = TRUE, S32 category = LLGLTexture::OTHER, bool defer_copy = false, LLGLuint* tex_name = nullptr);
+    bool       createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename = 0, bool to_create = true, S32 category = LLGLTexture::OTHER, bool defer_copy = false, LLGLuint* tex_name = nullptr);
 
     void       setFilteringOption(LLTexUnit::eTextureFilterOptions option);
-    void       setExplicitFormat(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format = 0, BOOL swap_bytes = FALSE);
+    void       setExplicitFormat(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format = 0, bool swap_bytes = false);
     void       setAddressMode(LLTexUnit::eTextureAddressMode mode);
-    BOOL       setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos, S32 width, S32 height, LLGLuint use_name = 0);
-    BOOL       setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height, LLGLuint use_name = 0);
+    bool       setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos, S32 width, S32 height, LLGLuint use_name = 0);
+    bool       setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height, LLGLuint use_name = 0);
     void       setGLTextureCreated (bool initialized);
     void       setCategory(S32 category) ;
     void       setTexName(LLGLuint); // for forcing w/ externally created textures only
@@ -145,20 +145,20 @@ public:
     S32        getMaxDiscardLevel() const;
     S32        getDiscardLevel() const;
     S8         getComponents() const;
-    BOOL       getBoundRecently() const;
+    bool       getBoundRecently() const;
     S32Bytes   getTextureMemory() const ;
     LLGLenum   getPrimaryFormat() const;
-    BOOL       getIsAlphaMask() const ;
+    bool       getIsAlphaMask() const ;
     LLTexUnit::eTextureType getTarget(void) const ;
-    BOOL       getMask(const LLVector2 &tc);
+    bool       getMask(const LLVector2 &tc);
     F32        getTimePassedSinceLastBound();
-    BOOL       getMissed() const ;
-    BOOL       isJustBound()const ;
+    bool       getMissed() const ;
+    bool       isJustBound()const ;
     void       forceUpdateBindStats(void) const;
 
     U32        getTexelsInAtlas() const ;
     U32        getTexelsInGLTexture() const ;
-    BOOL       isGLTextureCreated() const ;
+    bool       isGLTextureCreated() const ;
     S32        getDiscardLevelInAtlas() const ;
     LLGLTextureState getTextureState() const { return mTextureState; }
 
@@ -171,7 +171,7 @@ public:
     void forceActive() ;
     void setNoDelete() ;
     void dontDiscard() { mDontDiscard = 1; mTextureState = NO_DELETE; }
-    BOOL getDontDiscard() const { return mDontDiscard; }
+    bool getDontDiscard() const { return mDontDiscard; }
     //-----------------
 
 private:
@@ -188,7 +188,7 @@ protected:
     S32 mBoostLevel;                // enum describing priority level
     U32 mFullWidth;
     U32 mFullHeight;
-    BOOL mUseMipMaps;
+    bool mUseMipMaps;
     S8  mComponents;
     U32 mTexelsPerImage;            // Texels per image.
     mutable S8  mNeedsGLTexture;
diff --git a/indra/llrender/llimagegl.cpp b/indra/llrender/llimagegl.cpp
index c713a2b3a9..fb02c72338 100644
--- a/indra/llrender/llimagegl.cpp
+++ b/indra/llrender/llimagegl.cpp
@@ -56,14 +56,14 @@ const F32 MIN_TEXTURE_LIFETIME = 10.f;
 U32 wpo2(U32 i);
 
 
-// texture memory accounting (for OS X)
+// texture memory accounting (for macOS)
 static LLMutex sTexMemMutex;
 static std::unordered_map<U32, U64> sTextureAllocs;
 static U64 sTextureBytes = 0;
 
 // track a texture alloc on the currently bound texture.
 // asserts that no currently tracked alloc exists
-static void alloc_tex_image(U32 width, U32 height, U32 pixformat)
+void LLImageGLMemory::alloc_tex_image(U32 width, U32 height, U32 pixformat)
 {
     U32 texUnit = gGL.getCurrentTexUnitIndex();
     U32 texName = gGL.getTexUnit(texUnit)->getCurrTexture();
@@ -81,7 +81,7 @@ static void alloc_tex_image(U32 width, U32 height, U32 pixformat)
 }
 
 // track texture free on given texName
-static void free_tex_image(U32 texName)
+void LLImageGLMemory::free_tex_image(U32 texName)
 {
     sTexMemMutex.lock();
     auto iter = sTextureAllocs.find(texName);
@@ -98,22 +98,24 @@ static void free_tex_image(U32 texName)
 }
 
 // track texture free on given texNames
-static void free_tex_images(U32 count, const U32* texNames)
+void LLImageGLMemory::free_tex_images(U32 count, const U32* texNames)
 {
-    for (int i = 0; i < count; ++i)
+    for (U32 i = 0; i < count; ++i)
     {
         free_tex_image(texNames[i]);
     }
 }
 
 // track texture free on currently bound texture
-static void free_cur_tex_image()
+void LLImageGLMemory::free_cur_tex_image()
 {
     U32 texUnit = gGL.getCurrentTexUnitIndex();
     U32 texName = gGL.getTexUnit(texUnit)->getCurrTexture();
     free_tex_image(texName);
 }
 
+using namespace LLImageGLMemory;
+
 // static
 U64 LLImageGL::getTextureBytesAllocated()
 {
@@ -126,9 +128,9 @@ U32 LLImageGL::sUniqueCount             = 0;
 U32 LLImageGL::sBindCount               = 0;
 S32 LLImageGL::sCount                   = 0;
 
-BOOL LLImageGL::sGlobalUseAnisotropic   = FALSE;
+bool LLImageGL::sGlobalUseAnisotropic   = false;
 F32 LLImageGL::sLastFrameTime           = 0.f;
-BOOL LLImageGL::sAllowReadBackRaw       = FALSE ;
+bool LLImageGL::sAllowReadBackRaw       = false ;
 LLImageGL* LLImageGL::sDefaultGLTexture = NULL ;
 bool LLImageGL::sCompressTextures = false;
 std::set<LLImageGL*> LLImageGL::sImageList;
@@ -147,7 +149,7 @@ S32 LLImageGL::sCurTexPickSize = -1 ;
 S32 LLImageGL::sMaxCategories = 1 ;
 
 //optimization for when we don't need to calculate mIsMask
-BOOL LLImageGL::sSkipAnalyzeAlpha;
+bool LLImageGL::sSkipAnalyzeAlpha;
 
 //------------------------
 //****************************************************************************************************
@@ -185,12 +187,12 @@ void LLImageGL::checkTexSize(bool forced) const
 
         GLint texname;
         glGetIntegerv(GL_TEXTURE_BINDING_2D, &texname);
-        BOOL error = FALSE;
+        bool error = false;
         if (texname != mTexName)
         {
             LL_INFOS() << "Bound: " << texname << " Should bind: " << mTexName << " Default: " << LLImageGL::sDefaultGLTexture->getTexName() << LL_ENDL;
 
-            error = TRUE;
+            error = true;
             if (gDebugSession)
             {
                 gFailLog << "Invalid texture bound!" << std::endl;
@@ -213,7 +215,7 @@ void LLImageGL::checkTexSize(bool forced) const
         }
         if(x != (mWidth >> mCurrentDiscardLevel) || y != (mHeight >> mCurrentDiscardLevel))
         {
-            error = TRUE;
+            error = true;
             if (gDebugSession)
             {
                 gFailLog << "wrong texture size and discard level!" <<
@@ -236,7 +238,7 @@ void LLImageGL::checkTexSize(bool forced) const
 //**************************************************************************************
 
 //----------------------------------------------------------------------------
-BOOL is_little_endian()
+bool is_little_endian()
 {
     S32 a = 0x12345678;
     U8 *c = (U8*)(&a);
@@ -245,7 +247,7 @@ BOOL is_little_endian()
 }
 
 //static
-void LLImageGL::initClass(LLWindow* window, S32 num_catagories, BOOL skip_analyze_alpha /* = false */, bool thread_texture_loads /* = false */, bool thread_media_updates /* = false */)
+void LLImageGL::initClass(LLWindow* window, S32 num_catagories, bool skip_analyze_alpha /* = false */, bool thread_texture_loads /* = false */, bool thread_media_updates /* = false */)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     sSkipAnalyzeAlpha = skip_analyze_alpha;
@@ -297,6 +299,8 @@ S32 LLImageGL::dataFormatBits(S32 dataformat)
     case GL_BGRA:                                   return 32;      // Used for QuickTime media textures on the Mac
 #endif
     case GL_DEPTH_COMPONENT:                        return 24;
+    case GL_RGB16F:                                 return 48;
+    case GL_RGBA16F:                                return 64;
     default:
         LL_ERRS() << "LLImageGL::Unknown format: " << dataformat << LL_ENDL;
         return 0;
@@ -375,7 +379,7 @@ void LLImageGL::updateStats(F32 current_time)
 //----------------------------------------------------------------------------
 
 //static
-void LLImageGL::destroyGL(BOOL save_state)
+void LLImageGL::destroyGL(bool save_state)
 {
     for (S32 stage = 0; stage < gGLManager.mNumTextureImageUnits; stage++)
     {
@@ -420,7 +424,7 @@ void LLImageGL::restoreGL()
         {
             if (glimage->getComponents() && glimage->mSaveData->getComponents())
             {
-                glimage->createGLTexture(glimage->mCurrentDiscardLevel, glimage->mSaveData, 0, TRUE, glimage->getCategory());
+                glimage->createGLTexture(glimage->mCurrentDiscardLevel, glimage->mSaveData, 0, true, glimage->getCategory());
                 stop_glerror();
             }
             glimage->mSaveData = NULL; // deletes data
@@ -444,30 +448,30 @@ void LLImageGL::dirtyTexOptions()
 
 //for server side use only.
 //static
-BOOL LLImageGL::create(LLPointer<LLImageGL>& dest, BOOL usemipmaps)
+bool LLImageGL::create(LLPointer<LLImageGL>& dest, bool usemipmaps)
 {
     dest = new LLImageGL(usemipmaps);
-    return TRUE;
+    return true;
 }
 
 //for server side use only.
-BOOL LLImageGL::create(LLPointer<LLImageGL>& dest, U32 width, U32 height, U8 components, BOOL usemipmaps)
+bool LLImageGL::create(LLPointer<LLImageGL>& dest, U32 width, U32 height, U8 components, bool usemipmaps)
 {
     dest = new LLImageGL(width, height, components, usemipmaps);
-    return TRUE;
+    return true;
 }
 
 //for server side use only.
-BOOL LLImageGL::create(LLPointer<LLImageGL>& dest, const LLImageRaw* imageraw, BOOL usemipmaps)
+bool LLImageGL::create(LLPointer<LLImageGL>& dest, const LLImageRaw* imageraw, bool usemipmaps)
 {
     dest = new LLImageGL(imageraw, usemipmaps);
-    return TRUE;
+    return true;
 }
 
 //----------------------------------------------------------------------------
 
-LLImageGL::LLImageGL(BOOL usemipmaps)
-:   mSaveData(0), mExternalTexture(FALSE)
+LLImageGL::LLImageGL(bool usemipmaps)
+:   mSaveData(0), mExternalTexture(false)
 {
     init(usemipmaps);
     setSize(0, 0, 0);
@@ -475,8 +479,8 @@ LLImageGL::LLImageGL(BOOL usemipmaps)
     sCount++;
 }
 
-LLImageGL::LLImageGL(U32 width, U32 height, U8 components, BOOL usemipmaps)
-:   mSaveData(0), mExternalTexture(FALSE)
+LLImageGL::LLImageGL(U32 width, U32 height, U8 components, bool usemipmaps)
+:   mSaveData(0), mExternalTexture(false)
 {
     llassert( components <= 4 );
     init(usemipmaps);
@@ -485,8 +489,8 @@ LLImageGL::LLImageGL(U32 width, U32 height, U8 components, BOOL usemipmaps)
     sCount++;
 }
 
-LLImageGL::LLImageGL(const LLImageRaw* imageraw, BOOL usemipmaps)
-:   mSaveData(0), mExternalTexture(FALSE)
+LLImageGL::LLImageGL(const LLImageRaw* imageraw, bool usemipmaps)
+:   mSaveData(0), mExternalTexture(false)
 {
     init(usemipmaps);
     setSize(0, 0, 0);
@@ -527,7 +531,7 @@ LLImageGL::~LLImageGL()
     }
 }
 
-void LLImageGL::init(BOOL usemipmaps)
+void LLImageGL::init(bool usemipmaps)
 {
 #if LL_IMAGEGL_THREAD_CHECK
     mActiveThread = LLThread::currentID();
@@ -544,14 +548,14 @@ void LLImageGL::init(BOOL usemipmaps)
     mPickMaskWidth = 0;
     mPickMaskHeight = 0;
     mUseMipMaps = usemipmaps;
-    mHasExplicitFormat = FALSE;
+    mHasExplicitFormat = false;
 
-    mIsMask = FALSE;
-    mNeedsAlphaAndPickMask = TRUE ;
+    mIsMask = false;
+    mNeedsAlphaAndPickMask = true ;
     mAlphaStride = 0 ;
     mAlphaOffset = 0 ;
 
-    mGLTextureCreated = FALSE ;
+    mGLTextureCreated = false ;
     mTexName = 0;
     mWidth = 0;
     mHeight = 0;
@@ -580,10 +584,10 @@ void LLImageGL::init(BOOL usemipmaps)
     mFormatInternal = -1;
     mFormatPrimary = (LLGLenum) 0;
     mFormatType = GL_UNSIGNED_BYTE;
-    mFormatSwapBytes = FALSE;
+    mFormatSwapBytes = false;
 
 #ifdef DEBUG_MISS
-    mMissed = FALSE;
+    mMissed = false;
 #endif
 
     mCategory = -1;
@@ -701,12 +705,12 @@ void LLImageGL::forceUpdateBindStats(void) const
     mLastBindTime = sLastFrameTime;
 }
 
-BOOL LLImageGL::updateBindStats() const
+bool LLImageGL::updateBindStats() const
 {
     if (mTexName != 0)
     {
 #ifdef DEBUG_MISS
-        mMissed = ! getIsResident(TRUE);
+        mMissed = ! getIsResident(true);
 #endif
         sBindCount++;
         if (mLastBindTime != sLastFrameTime)
@@ -715,10 +719,10 @@ BOOL LLImageGL::updateBindStats() const
             sUniqueCount++;
             mLastBindTime = sLastFrameTime;
 
-            return TRUE ;
+            return true ;
         }
     }
-    return FALSE ;
+    return false ;
 }
 
 F32 LLImageGL::getTimePassedSinceLastBound()
@@ -726,11 +730,11 @@ F32 LLImageGL::getTimePassedSinceLastBound()
     return sLastFrameTime - mLastBindTime ;
 }
 
-void LLImageGL::setExplicitFormat( LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, BOOL swap_bytes )
+void LLImageGL::setExplicitFormat( LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, bool swap_bytes )
 {
     // Note: must be called before createTexture()
     // Note: it's up to the caller to ensure that the format matches the number of components.
-    mHasExplicitFormat = TRUE;
+    mHasExplicitFormat = true;
     mFormatInternal = internal_format;
     mFormatPrimary = primary_format;
     if(type_format == 0)
@@ -751,10 +755,10 @@ void LLImageGL::setImage(const LLImageRaw* imageraw)
              (imageraw->getHeight() == getHeight(mCurrentDiscardLevel)) &&
              (imageraw->getComponents() == getComponents()));
     const U8* rawdata = imageraw->getData();
-    setImage(rawdata, FALSE);
+    setImage(rawdata, false);
 }
 
-BOOL LLImageGL::setImage(const U8* data_in, BOOL data_hasmips /* = FALSE */, S32 usename /* = 0 */)
+bool LLImageGL::setImage(const U8* data_in, bool data_hasmips /* = false */, S32 usename /* = 0 */)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
 
@@ -946,7 +950,7 @@ BOOL LLImageGL::setImage(const U8* data_in, BOOL data_hasmips /* = FALSE */, S32
                             }
 
                             mGLTextureCreated = false;
-                            return FALSE;
+                            return false;
                         }
                         else
                         {
@@ -1055,10 +1059,10 @@ BOOL LLImageGL::setImage(const U8* data_in, BOOL data_hasmips /* = FALSE */, S32
     }
     stop_glerror();
     mGLTextureCreated = true;
-    return TRUE;
+    return true;
 }
 
-BOOL LLImageGL::preAddToAtlas(S32 discard_level, const LLImageRaw* raw_image)
+bool LLImageGL::preAddToAtlas(S32 discard_level, const LLImageRaw* raw_image)
 {
     //not compatible with core GL profile
     llassert(!LLRender::sGLCoreProfile);
@@ -1066,7 +1070,7 @@ BOOL LLImageGL::preAddToAtlas(S32 discard_level, const LLImageRaw* raw_image)
     if (gGLManager.mIsDisabled)
     {
         LL_WARNS() << "Trying to create a texture while GL is disabled!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
     llassert(gGLManager.mInited);
     stop_glerror();
@@ -1085,7 +1089,7 @@ BOOL LLImageGL::preAddToAtlas(S32 discard_level, const LLImageRaw* raw_image)
     if (!setSize(w, h, raw_image->getComponents(), discard_level))
     {
         LL_WARNS() << "Trying to create a texture with incorrect dimensions!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if (!mHasExplicitFormat)
@@ -1140,7 +1144,7 @@ BOOL LLImageGL::preAddToAtlas(S32 discard_level, const LLImageRaw* raw_image)
     }
 #endif
 
-    return TRUE ;
+    return true ;
 }
 
 void LLImageGL::postAddToAtlas()
@@ -1214,31 +1218,31 @@ void sub_image_lines(U32 target, S32 miplevel, S32 x_offset, S32 y_offset, S32 w
     }
 }
 
-BOOL LLImageGL::setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height, BOOL force_fast_update /* = FALSE */, LLGLuint use_name)
+bool LLImageGL::setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height, bool force_fast_update /* = false */, LLGLuint use_name)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     if (!width || !height)
     {
-        return TRUE;
+        return true;
     }
     LLGLuint tex_name = use_name != 0 ? use_name : mTexName;
     if (0 == tex_name)
     {
         // *TODO: Re-enable warning?  Ran into thread locking issues? DK 2011-02-18
         //LL_WARNS() << "Setting subimage on image without GL texture" << LL_ENDL;
-        return FALSE;
+        return false;
     }
     if (datap == NULL)
     {
         // *TODO: Re-enable warning?  Ran into thread locking issues? DK 2011-02-18
         //LL_WARNS() << "Setting subimage on image with NULL datap" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // HACK: allow the caller to explicitly force the fast path (i.e. using glTexSubImage2D here instead of calling setImage) even when updating the full texture.
     if (!force_fast_update && x_pos == 0 && y_pos == 0 && width == getWidth() && height == getHeight() && data_width == width && data_height == height)
     {
-        setImage(datap, FALSE, tex_name);
+        setImage(datap, false, tex_name);
     }
     else
     {
@@ -1292,7 +1296,7 @@ BOOL LLImageGL::setSubImage(const U8* datap, S32 data_width, S32 data_height, S3
 
         const U8* sub_datap = datap + (y_pos * data_width + x_pos) * getComponents();
         // Update the GL texture
-        BOOL res = gGL.getTexUnit(0)->bindManual(mBindTarget, tex_name);
+        bool res = gGL.getTexUnit(0)->bindManual(mBindTarget, tex_name);
         if (!res) LL_ERRS() << "LLImageGL::setSubImage(): bindTexture failed" << LL_ENDL;
         stop_glerror();
 
@@ -1324,28 +1328,28 @@ BOOL LLImageGL::setSubImage(const U8* datap, S32 data_width, S32 data_height, S3
         stop_glerror();
         mGLTextureCreated = true;
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLImageGL::setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos, S32 width, S32 height, BOOL force_fast_update /* = FALSE */, LLGLuint use_name)
+bool LLImageGL::setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos, S32 width, S32 height, bool force_fast_update /* = false */, LLGLuint use_name)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     return setSubImage(imageraw->getData(), imageraw->getWidth(), imageraw->getHeight(), x_pos, y_pos, width, height, force_fast_update, use_name);
 }
 
 // Copy sub image from frame buffer
-BOOL LLImageGL::setSubImageFromFrameBuffer(S32 fb_x, S32 fb_y, S32 x_pos, S32 y_pos, S32 width, S32 height)
+bool LLImageGL::setSubImageFromFrameBuffer(S32 fb_x, S32 fb_y, S32 x_pos, S32 y_pos, S32 width, S32 height)
 {
     if (gGL.getTexUnit(0)->bind(this, false, true))
     {
         glCopyTexSubImage2D(GL_TEXTURE_2D, 0, fb_x, fb_y, x_pos, y_pos, width, height);
         mGLTextureCreated = true;
         stop_glerror();
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -1365,7 +1369,7 @@ void LLImageGL::generateTextures(S32 numTextures, U32 *textures)
         name_count = pool_size;
     }
 
-    if (numTextures <= name_count)
+    if ((U32)numTextures <= name_count)
     {
         //copy teture names off the end of the pool
         memcpy(textures, name_pool + name_count - numTextures, sizeof(U32) * numTextures);
@@ -1584,7 +1588,7 @@ void LLImageGL::setManualImage(U32 target, S32 miplevel, S32 intformat, S32 widt
 
 //create an empty GL texture: just create a texture name
 //the texture is assiciate with some image by calling glTexImage outside LLImageGL
-BOOL LLImageGL::createGLTexture()
+bool LLImageGL::createGLTexture()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     checkActiveThread();
@@ -1592,7 +1596,7 @@ BOOL LLImageGL::createGLTexture()
     if (gGLManager.mIsDisabled)
     {
         LL_WARNS() << "Trying to create a texture while GL is disabled!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     mGLTextureCreated = false ; //do not save this texture when gl is destroyed.
@@ -1612,13 +1616,13 @@ BOOL LLImageGL::createGLTexture()
     if (!mTexName)
     {
         LL_WARNS() << "LLImageGL::createGLTexture failed to make an empty texture" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
-    return TRUE ;
+    return true ;
 }
 
-BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename/*=0*/, BOOL to_create, S32 category, bool defer_copy, LLGLuint* tex_name)
+bool LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename/*=0*/, bool to_create, S32 category, bool defer_copy, LLGLuint* tex_name)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     checkActiveThread();
@@ -1626,7 +1630,7 @@ BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S
     if (gGLManager.mIsDisabled)
     {
         LL_WARNS() << "Trying to create a texture while GL is disabled!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     llassert(gGLManager.mInited);
@@ -1636,7 +1640,7 @@ BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S
     {
         LL_WARNS() << "Trying to create a texture from invalid image data" << LL_ENDL;
         mGLTextureCreated = false;
-        return FALSE;
+        return false;
     }
 
     if (discard_level < 0)
@@ -1657,7 +1661,7 @@ BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S
     {
         LL_WARNS() << "Trying to create a texture with incorrect dimensions!" << LL_ENDL;
         mGLTextureCreated = false;
-        return FALSE;
+        return false;
     }
 
     if (mHasExplicitFormat &&
@@ -1666,7 +1670,7 @@ BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S
 
     {
         LL_WARNS()  << "Incorrect format: " << std::hex << mFormatPrimary << " components: " << (U32)mComponents <<  LL_ENDL;
-        mHasExplicitFormat = FALSE;
+        mHasExplicitFormat = false;
     }
 
     if( !mHasExplicitFormat )
@@ -1716,15 +1720,15 @@ BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S
         mCurrentDiscardLevel = discard_level;
         mLastBindTime = sLastFrameTime;
         mGLTextureCreated = false;
-        return TRUE ;
+        return true ;
     }
 
     setCategory(category);
     const U8* rawdata = imageraw->getData();
-    return createGLTexture(discard_level, rawdata, FALSE, usename, defer_copy, tex_name);
+    return createGLTexture(discard_level, rawdata, false, usename, defer_copy, tex_name);
 }
 
-BOOL LLImageGL::createGLTexture(S32 discard_level, const U8* data_in, BOOL data_hasmips, S32 usename, bool defer_copy, LLGLuint* tex_name)
+bool LLImageGL::createGLTexture(S32 discard_level, const U8* data_in, bool data_hasmips, S32 usename, bool defer_copy, LLGLuint* tex_name)
 // Call with void data, vmem is allocated but unitialized
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
@@ -1797,7 +1801,7 @@ BOOL LLImageGL::createGLTexture(S32 discard_level, const U8* data_in, BOOL data_
         LL_PROFILE_ZONE_NAMED("cglt - late setImage");
         if (!setImage(data_in, data_hasmips, new_texname))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -1835,7 +1839,7 @@ BOOL LLImageGL::createGLTexture(S32 discard_level, const U8* data_in, BOOL data_
     mLastBindTime = sLastFrameTime;
 
     checkActiveThread();
-    return TRUE;
+    return true;
 }
 
 void LLImageGL::syncToMainThread(LLGLuint new_tex_name)
@@ -1905,7 +1909,7 @@ void LLImageGL::syncTexName(LLGLuint texname)
     }
 }
 
-BOOL LLImageGL::readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compressed_ok) const
+bool LLImageGL::readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compressed_ok) const
 {
     llassert_always(sAllowReadBackRaw) ;
     //LL_ERRS() << "should not call this function!" << LL_ENDL ;
@@ -1917,7 +1921,7 @@ BOOL LLImageGL::readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compre
 
     if (mTexName == 0 || discard_level < mCurrentDiscardLevel || discard_level > mMaxDiscardLevel )
     {
-        return FALSE;
+        return false;
     }
 
     S32 gl_discard = discard_level - mCurrentDiscardLevel;
@@ -1934,7 +1938,7 @@ BOOL LLImageGL::readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compre
     if (glwidth == 0)
     {
         // No mip data smaller than current discard level
-        return FALSE;
+        return false;
     }
 
     S32 width = getWidth(discard_level);
@@ -1942,14 +1946,14 @@ BOOL LLImageGL::readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compre
     S32 ncomponents = getComponents();
     if (ncomponents == 0)
     {
-        return FALSE;
+        return false;
     }
     if(width < glwidth)
     {
         LL_WARNS() << "texture size is smaller than it should be." << LL_ENDL ;
         LL_WARNS() << "width: " << width << " glwidth: " << glwidth << " mWidth: " << mWidth <<
             " mCurrentDiscardLevel: " << (S32)mCurrentDiscardLevel << " discard_level: " << (S32)discard_level << LL_ENDL ;
-        return FALSE ;
+        return false ;
     }
 
     if (width <= 0 || width > 2048 || height <= 0 || height > 2048 || ncomponents < 1 || ncomponents > 4)
@@ -1971,6 +1975,8 @@ BOOL LLImageGL::readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compre
     }
     //-----------------------------------------------------------------------------------------------
 
+    LLImageDataLock lock(imageraw);
+
 #if GL_VERSION_1_3
     if (is_compressed)
     {
@@ -1980,7 +1986,7 @@ BOOL LLImageGL::readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compre
         {
             LL_WARNS() << "Memory allocation failed for reading back texture. Size is: " << glbytes << LL_ENDL ;
             LL_WARNS() << "width: " << width << "height: " << height << "components: " << ncomponents << LL_ENDL ;
-            return FALSE ;
+            return false ;
         }
 
         glGetCompressedTexImage(mTarget, gl_discard, (GLvoid*)(imageraw->getData()));
@@ -1992,7 +1998,7 @@ BOOL LLImageGL::readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compre
         {
             LL_WARNS() << "Memory allocation failed for reading back texture." << LL_ENDL ;
             LL_WARNS() << "width: " << width << "height: " << height << "components: " << ncomponents << LL_ENDL ;
-            return FALSE ;
+            return false ;
         }
 
         glGetTexImage(GL_TEXTURE_2D, gl_discard, mFormatPrimary, mFormatType, (GLvoid*)(imageraw->getData()));
@@ -2011,11 +2017,11 @@ BOOL LLImageGL::readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compre
             LL_WARNS() << "GL Error happens after reading back texture. Error code: " << error << LL_ENDL ;
         }
 
-        return FALSE ;
+        return false ;
     }
     //-----------------------------------------------------------------------------------------------
 
-    return TRUE ;
+    return true ;
 }
 
 void LLImageGL::destroyGLTexture()
@@ -2032,7 +2038,7 @@ void LLImageGL::destroyGLTexture()
         LLImageGL::deleteTextures(1, &mTexName);
         mCurrentDiscardLevel = -1 ; //invalidate mCurrentDiscardLevel.
         mTexName = 0;
-        mGLTextureCreated = FALSE ;
+        mGLTextureCreated = false ;
     }
 }
 
@@ -2083,7 +2089,7 @@ void LLImageGL::setFilteringOption(LLTexUnit::eTextureFilterOptions option)
     }
 }
 
-BOOL LLImageGL::getIsResident(BOOL test_now)
+bool LLImageGL::getIsResident(bool test_now)
 {
     if (test_now)
     {
@@ -2095,7 +2101,7 @@ BOOL LLImageGL::getIsResident(BOOL test_now)
         else
 #endif
         {
-            mIsResident = FALSE;
+            mIsResident = false;
         }
     }
 
@@ -2158,17 +2164,17 @@ S64 LLImageGL::getMipBytes(S32 discard_level) const
     return res;
 }
 
-BOOL LLImageGL::isJustBound() const
+bool LLImageGL::isJustBound() const
 {
-    return (BOOL)(sLastFrameTime - mLastBindTime < 0.5f);
+    return sLastFrameTime - mLastBindTime < 0.5f;
 }
 
-BOOL LLImageGL::getBoundRecently() const
+bool LLImageGL::getBoundRecently() const
 {
-    return (BOOL)(sLastFrameTime - mLastBindTime < MIN_TEXTURE_LIFETIME);
+    return (bool)(sLastFrameTime - mLastBindTime < MIN_TEXTURE_LIFETIME);
 }
 
-BOOL LLImageGL::getIsAlphaMask() const
+bool LLImageGL::getIsAlphaMask() const
 {
     llassert_always(!sSkipAnalyzeAlpha);
     return mIsMask;
@@ -2181,7 +2187,7 @@ void LLImageGL::setTarget(const LLGLenum target, const LLTexUnit::eTextureType b
 }
 
 const S8 INVALID_OFFSET = -99 ;
-void LLImageGL::setNeedsAlphaAndPickMask(BOOL need_mask)
+void LLImageGL::setNeedsAlphaAndPickMask(bool need_mask)
 {
     if(mNeedsAlphaAndPickMask != need_mask)
     {
@@ -2194,7 +2200,7 @@ void LLImageGL::setNeedsAlphaAndPickMask(BOOL need_mask)
         else //do not need alpha mask
         {
             mAlphaOffset = INVALID_OFFSET ;
-            mIsMask = FALSE;
+            mIsMask = false;
         }
     }
 }
@@ -2219,8 +2225,8 @@ void LLImageGL::calcAlphaChannelOffsetAndStride()
     case GL_RED:
     case GL_RGB:
     case GL_SRGB:
-        mNeedsAlphaAndPickMask = FALSE;
-        mIsMask = FALSE;
+        mNeedsAlphaAndPickMask = false;
+        mIsMask = false;
         return; //no alpha channel.
     case GL_RGBA:
 #if GL_VERSION_2_1
@@ -2277,8 +2283,8 @@ void LLImageGL::calcAlphaChannelOffsetAndStride()
     {
         LL_WARNS() << "Cannot analyze alpha for image with format type " << std::hex << mFormatType << std::dec << LL_ENDL;
 
-        mNeedsAlphaAndPickMask = FALSE ;
-        mIsMask = FALSE;
+        mNeedsAlphaAndPickMask = false ;
+        mIsMask = false;
     }
 }
 
@@ -2375,11 +2381,11 @@ void LLImageGL::analyzeAlpha(const void* data_in, U32 w, U32 h)
         (lowerhalftotal == length && alphatotal != 0) || // all close to transparent but not all totally transparent, or
         (upperhalftotal == length && alphatotal != 255*length)) // all close to opaque but not all totally opaque
     {
-        mIsMask = FALSE; // not suitable for masking
+        mIsMask = false; // not suitable for masking
     }
     else
     {
-        mIsMask = TRUE;
+        mIsMask = true;
     }
 }
 
@@ -2485,9 +2491,9 @@ void LLImageGL::updatePickMask(S32 width, S32 height, const U8* data_in)
     }
 }
 
-BOOL LLImageGL::getMask(const LLVector2 &tc)
+bool LLImageGL::getMask(const LLVector2 &tc)
 {
-    BOOL res = TRUE;
+    bool res = true;
 
     if (mPickMask)
     {
@@ -2531,13 +2537,13 @@ BOOL LLImageGL::getMask(const LLVector2 &tc)
         S32 idx = y*mPickMaskWidth+x;
         S32 offset = idx%8;
 
-        res = mPickMask[idx/8] & (1 << offset) ? TRUE : FALSE;
+        res = (mPickMask[idx/8] & (1 << offset)) != 0;
     }
 
     return res;
 }
 
-void LLImageGL::setCurTexSizebar(S32 index, BOOL set_pick_size)
+void LLImageGL::setCurTexSizebar(S32 index, bool set_pick_size)
 {
     sCurTexSizeBar = index ;
 
diff --git a/indra/llrender/llimagegl.h b/indra/llrender/llimagegl.h
index 89e35d2226..5c7a5ce821 100644
--- a/indra/llrender/llimagegl.h
+++ b/indra/llrender/llimagegl.h
@@ -47,6 +47,14 @@ class LLWindow;
 #define BYTES_TO_MEGA_BYTES(x) ((x) >> 20)
 #define MEGA_BYTES_TO_BYTES(x) ((x) << 20)
 
+namespace LLImageGLMemory
+{
+    void alloc_tex_image(U32 width, U32 height, U32 pixformat);
+    void free_tex_image(U32 texName);
+    void free_tex_images(U32 count, const U32* texNames);
+    void free_cur_tex_image();
+}
+
 //============================================================================
 class LLImageGL : public LLRefCount
 {
@@ -68,7 +76,7 @@ public:
     static S64 dataFormatBytes(S32 dataformat, S32 width, S32 height);
     static S32 dataFormatComponents(S32 dataformat);
 
-    BOOL updateBindStats() const ;
+    bool updateBindStats() const ;
     F32 getTimePassedSinceLastBound();
     void forceUpdateBindStats(void) const;
 
@@ -76,7 +84,7 @@ public:
     static void updateStats(F32 current_time);
 
     // Save off / restore GL textures
-    static void destroyGL(BOOL save_state = TRUE);
+    static void destroyGL(bool save_state = true);
     static void restoreGL();
     static void dirtyTexOptions();
 
@@ -85,14 +93,14 @@ public:
     //for server side use only.
     // Not currently necessary for LLImageGL, but required in some derived classes,
     // so include for compatability
-    static BOOL create(LLPointer<LLImageGL>& dest, BOOL usemipmaps = TRUE);
-    static BOOL create(LLPointer<LLImageGL>& dest, U32 width, U32 height, U8 components, BOOL usemipmaps = TRUE);
-    static BOOL create(LLPointer<LLImageGL>& dest, const LLImageRaw* imageraw, BOOL usemipmaps = TRUE);
+    static bool create(LLPointer<LLImageGL>& dest, bool usemipmaps = true);
+    static bool create(LLPointer<LLImageGL>& dest, U32 width, U32 height, U8 components, bool usemipmaps = true);
+    static bool create(LLPointer<LLImageGL>& dest, const LLImageRaw* imageraw, bool usemipmaps = true);
 
 public:
-    LLImageGL(BOOL usemipmaps = TRUE);
-    LLImageGL(U32 width, U32 height, U8 components, BOOL usemipmaps = TRUE);
-    LLImageGL(const LLImageRaw* imageraw, BOOL usemipmaps = TRUE);
+    LLImageGL(bool usemipmaps = true);
+    LLImageGL(U32 width, U32 height, U8 components, bool usemipmaps = true);
+    LLImageGL(const LLImageRaw* imageraw, bool usemipmaps = true);
 
     // For wrapping textures created via GL elsewhere with our API only. Use with caution.
     LLImageGL(LLGLuint mTexName, U32 components, LLGLenum target, LLGLint  formatInternal, LLGLenum formatPrimary, LLGLenum formatType, LLTexUnit::eTextureAddressMode addressMode);
@@ -112,29 +120,29 @@ public:
 
     static void setManualImage(U32 target, S32 miplevel, S32 intformat, S32 width, S32 height, U32 pixformat, U32 pixtype, const void *pixels, bool allow_compression = true);
 
-    BOOL createGLTexture() ;
-    BOOL createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename = 0, BOOL to_create = TRUE,
+    bool createGLTexture() ;
+    bool createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename = 0, bool to_create = true,
         S32 category = sMaxCategories-1, bool defer_copy = false, LLGLuint* tex_name = nullptr);
-    BOOL createGLTexture(S32 discard_level, const U8* data, BOOL data_hasmips = FALSE, S32 usename = 0, bool defer_copy = false, LLGLuint* tex_name = nullptr);
+    bool createGLTexture(S32 discard_level, const U8* data, bool data_hasmips = false, S32 usename = 0, bool defer_copy = false, LLGLuint* tex_name = nullptr);
     void setImage(const LLImageRaw* imageraw);
-    BOOL setImage(const U8* data_in, BOOL data_hasmips = FALSE, S32 usename = 0);
+    bool setImage(const U8* data_in, bool data_hasmips = false, S32 usename = 0);
     // *TODO: This function may not work if the textures is compressed (i.e.
     // RenderCompressTextures is 0). Partial image updates do not work on
     // compressed textures.
-    BOOL setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos, S32 width, S32 height, BOOL force_fast_update = FALSE, LLGLuint use_name = 0);
-    BOOL setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height, BOOL force_fast_update = FALSE, LLGLuint use_name = 0);
-    BOOL setSubImageFromFrameBuffer(S32 fb_x, S32 fb_y, S32 x_pos, S32 y_pos, S32 width, S32 height);
+    bool setSubImage(const LLImageRaw* imageraw, S32 x_pos, S32 y_pos, S32 width, S32 height, bool force_fast_update = false, LLGLuint use_name = 0);
+    bool setSubImage(const U8* datap, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height, bool force_fast_update = false, LLGLuint use_name = 0);
+    bool setSubImageFromFrameBuffer(S32 fb_x, S32 fb_y, S32 x_pos, S32 y_pos, S32 width, S32 height);
 
     // wait for gl commands to finish on current thread and push
     // a lambda to main thread to swap mNewTexName and mTexName
     void syncToMainThread(LLGLuint new_tex_name);
 
     // Read back a raw image for this discard level, if it exists
-    BOOL readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compressed_ok) const;
+    bool readBackRaw(S32 discard_level, LLImageRaw* imageraw, bool compressed_ok) const;
     void destroyGLTexture();
     void forceToInvalidateGLTexture();
 
-    void setExplicitFormat(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format = 0, BOOL swap_bytes = FALSE);
+    void setExplicitFormat(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format = 0, bool swap_bytes = false);
     void setComponents(S8 ncomponents) { mComponents = ncomponents; }
 
     S32  getDiscardLevel() const        { return mCurrentDiscardLevel; }
@@ -147,18 +155,18 @@ public:
     U8   getComponents() const { return mComponents; }
     S64  getBytes(S32 discard_level = -1) const;
     S64  getMipBytes(S32 discard_level = -1) const;
-    BOOL getBoundRecently() const;
-    BOOL isJustBound() const;
-    BOOL getHasExplicitFormat() const { return mHasExplicitFormat; }
+    bool getBoundRecently() const;
+    bool isJustBound() const;
+    bool getHasExplicitFormat() const { return mHasExplicitFormat; }
     LLGLenum getPrimaryFormat() const { return mFormatPrimary; }
     LLGLenum getFormatType() const { return mFormatType; }
 
-    BOOL getHasGLTexture() const { return mTexName != 0; }
+    bool getHasGLTexture() const { return mTexName != 0; }
     LLGLuint getTexName() const { return mTexName; }
 
-    BOOL getIsAlphaMask() const;
+    bool getIsAlphaMask() const;
 
-    BOOL getIsResident(BOOL test_now = FALSE); // not const
+    bool getIsResident(bool test_now = false); // not const
 
     void setTarget(const LLGLenum target, const LLTexUnit::eTextureType bind_target);
 
@@ -166,11 +174,11 @@ public:
     bool isGLTextureCreated(void) const { return mGLTextureCreated ; }
     void setGLTextureCreated (bool initialized) { mGLTextureCreated = initialized; }
 
-    BOOL getUseMipMaps() const { return mUseMipMaps; }
-    void setUseMipMaps(BOOL usemips) { mUseMipMaps = usemips; }
-    void setHasMipMaps(BOOL hasmips) { mHasMipMaps = hasmips; }
+    bool getUseMipMaps() const { return mUseMipMaps; }
+    void setUseMipMaps(bool usemips) { mUseMipMaps = usemips; }
+    void setHasMipMaps(bool hasmips) { mHasMipMaps = hasmips; }
     void updatePickMask(S32 width, S32 height, const U8* data_in);
-    BOOL getMask(const LLVector2 &tc);
+    bool getMask(const LLVector2 &tc);
 
     void checkTexSize(bool forced = false) const ;
 
@@ -192,12 +200,12 @@ public:
     U32      getTexelsInGLTexture()const {return mTexelsInGLTexture;}
 
 
-    void init(BOOL usemipmaps);
+    void init(bool usemipmaps);
     virtual void cleanup(); // Clean up the LLImageGL so it can be reinitialized.  Be careful when using this in derived class destructors
 
-    void setNeedsAlphaAndPickMask(BOOL need_mask);
+    void setNeedsAlphaAndPickMask(bool need_mask);
 
-    BOOL preAddToAtlas(S32 discard_level, const LLImageRaw* raw_image);
+    bool preAddToAtlas(S32 discard_level, const LLImageRaw* raw_image);
     void postAddToAtlas() ;
 
 #if LL_IMAGEGL_THREAD_CHECK
@@ -222,11 +230,11 @@ private:
     U16 mPickMaskWidth;
     U16 mPickMaskHeight;
     S8 mUseMipMaps;
-    BOOL mHasExplicitFormat; // If false (default), GL format is f(mComponents)
+    bool mHasExplicitFormat; // If false (default), GL format is f(mComponents)
     bool mAutoGenMips = false;
 
-    BOOL mIsMask;
-    BOOL mNeedsAlphaAndPickMask;
+    bool mIsMask;
+    bool mNeedsAlphaAndPickMask;
     S8   mAlphaStride ;
     S8   mAlphaOffset ;
 
@@ -261,9 +269,9 @@ protected:
     LLGLint  mFormatInternal; // = GL internalformat
     LLGLenum mFormatPrimary;  // = GL format (pixel data format)
     LLGLenum mFormatType;
-    BOOL     mFormatSwapBytes;// if true, use glPixelStorei(GL_UNPACK_SWAP_BYTES, 1)
+    bool     mFormatSwapBytes;// if true, use glPixelStorei(GL_UNPACK_SWAP_BYTES, 1)
 
-    BOOL mExternalTexture;
+    bool mExternalTexture;
 
     // STATICS
 public:
@@ -275,28 +283,28 @@ public:
     // Global memory statistics
     static U32 sBindCount;                  // Tracks number of texture binds for current frame
     static U32 sUniqueCount;                // Tracks number of unique texture binds for current frame
-    static BOOL sGlobalUseAnisotropic;
+    static bool sGlobalUseAnisotropic;
     static LLImageGL* sDefaultGLTexture ;
-    static BOOL sAutomatedTest;
+    static bool sAutomatedTest;
     static bool sCompressTextures;          //use GL texture compression
 #if DEBUG_MISS
-    BOOL mMissed; // Missed on last bind?
-    BOOL getMissed() const { return mMissed; };
+    bool mMissed; // Missed on last bind?
+    bool getMissed() const { return mMissed; };
 #else
-    BOOL getMissed() const { return FALSE; };
+    bool getMissed() const { return false; };
 #endif
 
 public:
-    static void initClass(LLWindow* window, S32 num_catagories, BOOL skip_analyze_alpha = false, bool thread_texture_loads = false, bool thread_media_updates = false);
+    static void initClass(LLWindow* window, S32 num_catagories, bool skip_analyze_alpha = false, bool thread_texture_loads = false, bool thread_media_updates = false);
     static void cleanupClass() ;
 
 private:
     static S32 sMaxCategories;
-    static BOOL sSkipAnalyzeAlpha;
+    static bool sSkipAnalyzeAlpha;
 
     //the flag to allow to call readBackRaw(...).
     //can be removed if we do not use that function at all.
-    static BOOL sAllowReadBackRaw ;
+    static bool sAllowReadBackRaw ;
 //
 //****************************************************************************************************
 //The below for texture auditing use only
@@ -317,7 +325,7 @@ public:
     static S32 sCurTexSizeBar ;
     static S32 sCurTexPickSize ;
 
-    static void setCurTexSizebar(S32 index, BOOL set_pick_size = TRUE) ;
+    static void setCurTexSizebar(S32 index, bool set_pick_size = true) ;
     static void resetCurTexSizebar();
 
 //****************************************************************************************************
diff --git a/indra/llrender/llpostprocess.cpp b/indra/llrender/llpostprocess.cpp
index aa092e5215..29ec1408d5 100644
--- a/indra/llrender/llpostprocess.cpp
+++ b/indra/llrender/llpostprocess.cpp
@@ -165,7 +165,7 @@ void LLPostProcess::invalidate()
     mSceneRenderTexture = NULL ;
     mNoiseTexture = NULL ;
     mTempBloomTexture = NULL ;
-    initialized = FALSE ;
+    initialized = false ;
 }
 
 void LLPostProcess::apply(unsigned int width, unsigned int height)
@@ -373,7 +373,7 @@ void LLPostProcess::createTexture(LLPointer<LLImageGL>& texture, unsigned int wi
 {
     std::vector<GLubyte> data(width * height * 4, 0) ;
 
-    texture = new LLImageGL(FALSE) ;
+    texture = new LLImageGL(false) ;
     if(texture->createGLTexture())
     {
         gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, texture->getTexName());
@@ -395,7 +395,7 @@ void LLPostProcess::createNoiseTexture(LLPointer<LLImageGL>& texture)
         }
     }
 
-    texture = new LLImageGL(FALSE) ;
+    texture = new LLImageGL(false) ;
     if(texture->createGLTexture())
     {
         gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, texture->getTexName());
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 0a522c88d7..1037fbbfe3 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -1008,6 +1008,9 @@ void LLRender::syncLightState()
 
 void LLRender::syncMatrices()
 {
+    STOP_GLERROR;
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_DISPLAY;
+
     static const U32 name[] =
     {
         LLShaderMgr::MODELVIEW_MATRIX,
@@ -1030,8 +1033,6 @@ void LLRender::syncMatrices()
 
     if (shader)
     {
-        //llassert(shader);
-
         bool mvp_done = false;
 
         U32 i = MM_MODELVIEW;
@@ -1105,7 +1106,7 @@ void LLRender::syncMatrices()
             if (shader->getUniformLocation(LLShaderMgr::INVERSE_PROJECTION_MATRIX))
             {
                 glh::matrix4f inv_proj = mat.inverse();
-                shader->uniformMatrix4fv(LLShaderMgr::INVERSE_PROJECTION_MATRIX, 1, FALSE, inv_proj.m);
+                shader->uniformMatrix4fv(LLShaderMgr::INVERSE_PROJECTION_MATRIX, 1, false, inv_proj.m);
             }
 
             // Used by some full screen effects - such as full screen lights, glow, etc.
@@ -1152,6 +1153,7 @@ void LLRender::syncMatrices()
             syncLightState();
         }
     }
+    STOP_GLERROR;
 }
 
 void LLRender::translatef(const GLfloat& x, const GLfloat& y, const GLfloat& z)
@@ -1602,6 +1604,7 @@ void LLRender::end()
 }
 void LLRender::flush()
 {
+    STOP_GLERROR;
     if (mCount > 0)
     {
         LL_PROFILE_ZONE_SCOPED_CATEGORY_PIPELINE;
diff --git a/indra/llrender/llrender.h b/indra/llrender/llrender.h
index 1eace546a2..5852201c94 100644
--- a/indra/llrender/llrender.h
+++ b/indra/llrender/llrender.h
@@ -555,6 +555,5 @@ glh::matrix4f gl_perspective(GLfloat fovy, GLfloat aspect, GLfloat zNear, GLfloa
 glh::matrix4f gl_lookat(LLVector3 eye, LLVector3 center, LLVector3 up);
 
 #define LL_SHADER_LOADING_WARNS(...) LL_WARNS()
-#define LL_SHADER_UNIFORM_ERRS(...)  LL_ERRS("Shader")
 
 #endif
diff --git a/indra/llrender/llrender2dutils.cpp b/indra/llrender/llrender2dutils.cpp
index c04b571798..97e9875afb 100644
--- a/indra/llrender/llrender2dutils.cpp
+++ b/indra/llrender/llrender2dutils.cpp
@@ -51,11 +51,11 @@ const LLColor4 UI_VERTEX_COLOR(1.f, 1.f, 1.f, 1.f);
 // Functions
 //
 
-BOOL ui_point_in_rect(S32 x, S32 y, S32 left, S32 top, S32 right, S32 bottom)
+bool ui_point_in_rect(S32 x, S32 y, S32 left, S32 top, S32 right, S32 bottom)
 {
-    if (x < left || right < x) return FALSE;
-    if (y < bottom || top < y) return FALSE;
-    return TRUE;
+    if (x < left || right < x) return false;
+    if (y < bottom || top < y) return false;
+    return true;
 }
 
 
@@ -91,13 +91,13 @@ void gl_draw_x(const LLRect& rect, const LLColor4& color)
 }
 
 
-void gl_rect_2d_offset_local( S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &color, S32 pixel_offset, BOOL filled)
+void gl_rect_2d_offset_local( S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &color, S32 pixel_offset, bool filled)
 {
     gGL.color4fv(color.mV);
     gl_rect_2d_offset_local(left, top, right, bottom, pixel_offset, filled);
 }
 
-void gl_rect_2d_offset_local( S32 left, S32 top, S32 right, S32 bottom, S32 pixel_offset, BOOL filled)
+void gl_rect_2d_offset_local( S32 left, S32 top, S32 right, S32 bottom, S32 pixel_offset, bool filled)
 {
     gGL.pushUIMatrix();
     left += LLFontGL::sCurOrigin.mX;
@@ -115,7 +115,7 @@ void gl_rect_2d_offset_local( S32 left, S32 top, S32 right, S32 bottom, S32 pixe
 }
 
 
-void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, BOOL filled )
+void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, bool filled )
 {
     gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 
@@ -147,14 +147,14 @@ void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, BOOL filled )
     }
 }
 
-void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &color, BOOL filled )
+void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &color, bool filled )
 {
     gGL.color4fv( color.mV );
     gl_rect_2d( left, top, right, bottom, filled );
 }
 
 
-void gl_rect_2d( const LLRect& rect, const LLColor4& color, BOOL filled )
+void gl_rect_2d( const LLRect& rect, const LLColor4& color, bool filled )
 {
     gGL.color4fv( color.mV );
     gl_rect_2d( rect.mLeft, rect.mTop, rect.mRight, rect.mBottom, filled );
@@ -269,7 +269,7 @@ void gl_line_2d(S32 x1, S32 y1, S32 x2, S32 y2, const LLColor4 &color )
     gGL.end();
 }
 
-void gl_triangle_2d(S32 x1, S32 y1, S32 x2, S32 y2, S32 x3, S32 y3, const LLColor4& color, BOOL filled)
+void gl_triangle_2d(S32 x1, S32 y1, S32 x2, S32 y2, S32 x3, S32 y3, const LLColor4& color, bool filled)
 {
     gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 
@@ -348,7 +348,7 @@ void gl_draw_scaled_image(S32 x, S32 y, S32 width, S32 height, LLTexture* image,
     gl_draw_scaled_rotated_image( x, y, width, height, 0.f, image, color, uv_rect );
 }
 
-void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 border_width, S32 border_height, S32 width, S32 height, LLTexture* image, const LLColor4& color, BOOL solid_color, const LLRectf& uv_rect, bool scale_inner)
+void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 border_width, S32 border_height, S32 width, S32 height, LLTexture* image, const LLColor4& color, bool solid_color, const LLRectf& uv_rect, bool scale_inner)
 {
     if (NULL == image)
     {
@@ -364,7 +364,7 @@ void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 border_width, S32 border
     gl_draw_scaled_image_with_border(x, y, width, height, image, color, solid_color, uv_rect, scale_rect, scale_inner);
 }
 
-void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 width, S32 height, LLTexture* image, const LLColor4& color, BOOL solid_color, const LLRectf& uv_outer_rect, const LLRectf& center_rect, bool scale_inner)
+void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 width, S32 height, LLTexture* image, const LLColor4& color, bool solid_color, const LLRectf& uv_outer_rect, const LLRectf& center_rect, bool scale_inner)
 {
     stop_glerror();
 
@@ -841,7 +841,7 @@ void gl_line_3d( const LLVector3& start, const LLVector3& end, const LLColor4& c
     LLRender2D::getInstance()->setLineWidth(1.f);
 }
 
-void gl_arc_2d(F32 center_x, F32 center_y, F32 radius, S32 steps, BOOL filled, F32 start_angle, F32 end_angle)
+void gl_arc_2d(F32 center_x, F32 center_y, F32 radius, S32 steps, bool filled, F32 start_angle, F32 end_angle)
 {
     if (end_angle < start_angle)
     {
@@ -884,7 +884,7 @@ void gl_arc_2d(F32 center_x, F32 center_y, F32 radius, S32 steps, BOOL filled, F
     gGL.popUIMatrix();
 }
 
-void gl_circle_2d(F32 center_x, F32 center_y, F32 radius, S32 steps, BOOL filled)
+void gl_circle_2d(F32 center_x, F32 center_y, F32 radius, S32 steps, bool filled)
 {
     gGL.pushUIMatrix();
     {
@@ -945,7 +945,7 @@ void gl_deep_circle( F32 radius, F32 depth, S32 steps )
     gGL.end();
 }
 
-void gl_ring( F32 radius, F32 width, const LLColor4& center_color, const LLColor4& side_color, S32 steps, BOOL render_center )
+void gl_ring( F32 radius, F32 width, const LLColor4& center_color, const LLColor4& side_color, S32 steps, bool render_center )
 {
     gGL.pushUIMatrix();
     {
diff --git a/indra/llrender/llrender2dutils.h b/indra/llrender/llrender2dutils.h
index c3c6d66b8e..0d3efc38d6 100644
--- a/indra/llrender/llrender2dutils.h
+++ b/indra/llrender/llrender2dutils.h
@@ -43,30 +43,30 @@ class LLUUID;
 
 extern const LLColor4 UI_VERTEX_COLOR;
 
-BOOL ui_point_in_rect(S32 x, S32 y, S32 left, S32 top, S32 right, S32 bottom);
+bool ui_point_in_rect(S32 x, S32 y, S32 left, S32 top, S32 right, S32 bottom);
 void gl_state_for_2d(S32 width, S32 height);
 
 void gl_line_2d(S32 x1, S32 y1, S32 x2, S32 y2);
 void gl_line_2d(S32 x1, S32 y1, S32 x2, S32 y2, const LLColor4 &color );
-void gl_triangle_2d(S32 x1, S32 y1, S32 x2, S32 y2, S32 x3, S32 y3, const LLColor4& color, BOOL filled);
+void gl_triangle_2d(S32 x1, S32 y1, S32 x2, S32 y2, S32 x3, S32 y3, const LLColor4& color, bool filled);
 void gl_rect_2d_simple( S32 width, S32 height );
 
 void gl_draw_x(const LLRect& rect, const LLColor4& color);
 
-void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, BOOL filled = TRUE );
-void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &color, BOOL filled = TRUE );
-void gl_rect_2d_offset_local( S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &color, S32 pixel_offset = 0, BOOL filled = TRUE );
-void gl_rect_2d_offset_local( S32 left, S32 top, S32 right, S32 bottom, S32 pixel_offset = 0, BOOL filled = TRUE );
-void gl_rect_2d(const LLRect& rect, BOOL filled = TRUE );
-void gl_rect_2d(const LLRect& rect, const LLColor4& color, BOOL filled = TRUE );
+void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, bool filled = true );
+void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &color, bool filled = true );
+void gl_rect_2d_offset_local( S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &color, S32 pixel_offset = 0, bool filled = true );
+void gl_rect_2d_offset_local( S32 left, S32 top, S32 right, S32 bottom, S32 pixel_offset = 0, bool filled = true );
+void gl_rect_2d(const LLRect& rect, bool filled = true );
+void gl_rect_2d(const LLRect& rect, const LLColor4& color, bool filled = true );
 void gl_rect_2d_checkerboard(const LLRect& rect, GLfloat alpha = 1.0f);
 
 void gl_drop_shadow(S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &start_color, S32 lines);
 
-void gl_circle_2d(F32 x, F32 y, F32 radius, S32 steps, BOOL filled);
-void gl_arc_2d(F32 center_x, F32 center_y, F32 radius, S32 steps, BOOL filled, F32 start_angle, F32 end_angle);
+void gl_circle_2d(F32 x, F32 y, F32 radius, S32 steps, bool filled);
+void gl_arc_2d(F32 center_x, F32 center_y, F32 radius, S32 steps, bool filled, F32 start_angle, F32 end_angle);
 void gl_deep_circle( F32 radius, F32 depth );
-void gl_ring( F32 radius, F32 width, const LLColor4& center_color, const LLColor4& side_color, S32 steps, BOOL render_center );
+void gl_ring( F32 radius, F32 width, const LLColor4& center_color, const LLColor4& side_color, S32 steps, bool render_center );
 void gl_corners_2d(S32 left, S32 top, S32 right, S32 bottom, S32 length, F32 max_frac);
 void gl_washer_2d(F32 outer_radius, F32 inner_radius, S32 steps, const LLColor4& inner_color, const LLColor4& outer_color);
 void gl_washer_segment_2d(F32 outer_radius, F32 inner_radius, F32 start_radians, F32 end_radians, S32 steps, const LLColor4& inner_color, const LLColor4& outer_color);
@@ -76,8 +76,8 @@ void gl_draw_scaled_target(S32 x, S32 y, S32 width, S32 height, LLRenderTarget*
 void gl_draw_scaled_image(S32 x, S32 y, S32 width, S32 height, LLTexture* image, const LLColor4& color = UI_VERTEX_COLOR, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f));
 void gl_draw_rotated_image(S32 x, S32 y, F32 degrees, LLTexture* image, const LLColor4& color = UI_VERTEX_COLOR, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f));
 void gl_draw_scaled_rotated_image(S32 x, S32 y, S32 width, S32 height, F32 degrees, LLTexture* image, const LLColor4& color = UI_VERTEX_COLOR, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f), LLRenderTarget* target = NULL);
-void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 border_width, S32 border_height, S32 width, S32 height, LLTexture* image, const LLColor4 &color, BOOL solid_color = FALSE, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f), bool scale_inner = true);
-void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 width, S32 height, LLTexture* image, const LLColor4 &color, BOOL solid_color = FALSE, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f), const LLRectf& scale_rect = LLRectf(0.f, 1.f, 1.f, 0.f), bool scale_inner = true);
+void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 border_width, S32 border_height, S32 width, S32 height, LLTexture* image, const LLColor4 &color, bool solid_color = false, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f), bool scale_inner = true);
+void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 width, S32 height, LLTexture* image, const LLColor4 &color, bool solid_color = false, const LLRectf& uv_rect = LLRectf(0.f, 1.f, 1.f, 0.f), const LLRectf& scale_rect = LLRectf(0.f, 1.f, 1.f, 0.f), bool scale_inner = true);
 
 void gl_line_3d( const LLVector3& start, const LLVector3& end, const LLColor4& color);
 
@@ -110,12 +110,12 @@ void gl_segmented_rect_2d_tex(const S32 left, const S32 top, const S32 right, co
 void gl_segmented_rect_2d_fragment_tex(const LLRect& rect, const S32 texture_width, const S32 texture_height, const S32 border_size, const F32 start_fragment, const F32 end_fragment, const U32 edges = ROUNDED_RECT_ALL);
 void gl_segmented_rect_3d_tex(const LLRectf& clip_rect, const LLRectf& center_uv_rect, const LLRectf& center_draw_rect, const LLVector3& width_vec, const LLVector3& height_vec);
 
-inline void gl_rect_2d( const LLRect& rect, BOOL filled )
+inline void gl_rect_2d( const LLRect& rect, bool filled )
 {
     gl_rect_2d( rect.mLeft, rect.mTop, rect.mRight, rect.mBottom, filled );
 }
 
-inline void gl_rect_2d_offset_local( const LLRect& rect, S32 pixel_offset, BOOL filled)
+inline void gl_rect_2d_offset_local( const LLRect& rect, S32 pixel_offset, bool filled)
 {
     gl_rect_2d_offset_local( rect.mLeft, rect.mTop, rect.mRight, rect.mBottom, pixel_offset, filled );
 }
diff --git a/indra/llrender/llrendertarget.cpp b/indra/llrender/llrendertarget.cpp
index aa5bcd0864..dcc81a8874 100644
--- a/indra/llrender/llrendertarget.cpp
+++ b/indra/llrender/llrendertarget.cpp
@@ -1,25 +1,25 @@
-/** 
+/**
  * @file llrendertarget.cpp
  * @brief LLRenderTarget implementation
  *
  * $LicenseInfo:firstyear=2001&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2010, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -44,7 +44,7 @@ void check_framebuffer_status()
             break;
         default:
             LL_WARNS() << "check_framebuffer_status failed -- " << std::hex << status << LL_ENDL;
-            ll_fail("check_framebuffer_status failed");    
+            ll_fail("check_framebuffer_status failed");
             break;
         }
     }
@@ -75,10 +75,10 @@ LLRenderTarget::~LLRenderTarget()
 }
 
 void LLRenderTarget::resize(U32 resx, U32 resy)
-{ 
+{
     //for accounting, get the number of pixels added/subtracted
     S32 pix_diff = (resx*resy)-(mResX*mResY);
-        
+
     mResX = resx;
     mResY = resy;
 
@@ -92,7 +92,7 @@ void LLRenderTarget::resize(U32 resx, U32 resy)
     }
 
     if (mDepth)
-    { 
+    {
         gGL.getTexUnit(0)->bindManual(mUsage, mDepth);
         U32 internal_type = LLTexUnit::getInternalType(mUsage);
         LLImageGL::setManualImage(internal_type, 0, GL_DEPTH_COMPONENT24, mResX, mResY, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL, false);
@@ -100,7 +100,7 @@ void LLRenderTarget::resize(U32 resx, U32 resy)
         sBytesAllocated += pix_diff*4;
     }
 }
-    
+
 
 bool LLRenderTarget::allocate(U32 resx, U32 resy, U32 color_fmt, bool depth, LLTexUnit::eTextureType usage, LLTexUnit::eTextureMipGeneration generateMipMaps)
 {
@@ -112,7 +112,7 @@ bool LLRenderTarget::allocate(U32 resx, U32 resy, U32 color_fmt, bool depth, LLT
     resy = llmin(resy, (U32) gGLManager.mGLMaxTextureSize);
 
     release();
-    
+
     mResX = resx;
     mResY = resy;
 
@@ -125,7 +125,7 @@ bool LLRenderTarget::allocate(U32 resx, U32 resy, U32 color_fmt, bool depth, LLT
         // Calculate the number of mip levels based upon resolution that we should have.
         mMipLevels = 1 + floor(log10((float)llmax(mResX, mResY))/log10(2.0));
     }
-    
+
     if (depth)
     {
         if (!allocateDepth())
@@ -140,12 +140,12 @@ bool LLRenderTarget::allocate(U32 resx, U32 resy, U32 color_fmt, bool depth, LLT
     if (mDepth)
     {
         glBindFramebuffer(GL_FRAMEBUFFER, mFBO);
-            
+
         glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, LLTexUnit::getInternalType(mUsage), mDepth, 0);
 
         glBindFramebuffer(GL_FRAMEBUFFER, sCurFBO);
     }
-    
+
     return addColorAttachment(color_fmt);
 }
 
@@ -190,7 +190,7 @@ void LLRenderTarget::releaseColorAttachment()
     llassert(!isBoundInStack());
     llassert(mTex.size() == 1); //cannot use releaseColorAttachment with LLRenderTarget managed color targets
     llassert(mFBO != 0);  // mFBO must be valid
-    
+
     glBindFramebuffer(GL_FRAMEBUFFER, mFBO);
     glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, LLTexUnit::getInternalType(mUsage), 0, 0);
     glBindFramebuffer(GL_FRAMEBUFFER, sCurFBO);
@@ -208,7 +208,7 @@ bool LLRenderTarget::addColorAttachment(U32 color_fmt)
         return true;
     }
 
-    U32 offset = mTex.size();
+    U32 offset = static_cast<U32>(mTex.size());
 
     if( offset >= 4 )
     {
@@ -238,12 +238,12 @@ bool LLRenderTarget::addColorAttachment(U32 color_fmt)
             return false;
         }
     }
-    
+
     sBytesAllocated += mResX*mResY*4;
 
     stop_glerror();
 
-    
+
     if (offset == 0)
     { //use bilinear filtering on single texture render targets that aren't multisampled
         gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_BILINEAR);
@@ -266,15 +266,15 @@ bool LLRenderTarget::addColorAttachment(U32 color_fmt)
         gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_CLAMP);
         stop_glerror();
     }
-        
+
     if (mFBO)
     {
         glBindFramebuffer(GL_FRAMEBUFFER, mFBO);
         glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0+offset,
             LLTexUnit::getInternalType(mUsage), tex, 0);
-     
+
         check_framebuffer_status();
-        
+
         glBindFramebuffer(GL_FRAMEBUFFER, sCurFBO);
     }
 
@@ -286,8 +286,8 @@ bool LLRenderTarget::addColorAttachment(U32 color_fmt)
         bindTarget();
         flush();
     }
-    
-    
+
+
     return true;
 }
 
@@ -296,7 +296,7 @@ bool LLRenderTarget::allocateDepth()
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DISPLAY;
     LLImageGL::generateTextures(1, &mDepth);
     gGL.getTexUnit(0)->bindManual(mUsage, mDepth);
-        
+
     U32 internal_type = LLTexUnit::getInternalType(mUsage);
     stop_glerror();
     clear_glerror();
@@ -336,7 +336,7 @@ void LLRenderTarget::shareDepthBuffer(LLRenderTarget& target)
     if (mDepth)
     {
         glBindFramebuffer(GL_FRAMEBUFFER, target.mFBO);
-        
+
         glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, LLTexUnit::getInternalType(mUsage), mDepth, 0);
 
         check_framebuffer_status();
@@ -355,7 +355,7 @@ void LLRenderTarget::release()
     if (mDepth)
     {
         LLImageGL::deleteTextures(1, &mDepth);
-        
+
         mDepth = 0;
 
         sBytesAllocated -= mResX*mResY*4;
@@ -378,11 +378,11 @@ void LLRenderTarget::release()
     if (mFBO && (mTex.size() > 1))
     {
         glBindFramebuffer(GL_FRAMEBUFFER, mFBO);
-        S32 z;
+        size_t z;
         for (z = mTex.size() - 1; z >= 1; z--)
         {
             sBytesAllocated -= mResX*mResY*4;
-            glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0+z, LLTexUnit::getInternalType(mUsage), 0, 0);
+            glFramebufferTexture2D(GL_FRAMEBUFFER, static_cast<GLenum>(GL_COLOR_ATTACHMENT0+z), LLTexUnit::getInternalType(mUsage), 0, 0);
             LLImageGL::deleteTextures(1, &mTex[z]);
         }
         glBindFramebuffer(GL_FRAMEBUFFER, sCurFBO);
@@ -408,7 +408,7 @@ void LLRenderTarget::release()
 
     mTex.clear();
     mInternalFormat.clear();
-    
+
     mResX = mResY = 0;
 }
 
@@ -417,7 +417,7 @@ void LLRenderTarget::bindTarget()
     LL_PROFILE_GPU_ZONE("bindTarget");
     llassert(mFBO);
     llassert(!isBoundInStack());
-        
+
     glBindFramebuffer(GL_FRAMEBUFFER, mFBO);
     sCurFBO = mFBO;
 
@@ -426,8 +426,8 @@ void LLRenderTarget::bindTarget()
                             GL_COLOR_ATTACHMENT1,
                             GL_COLOR_ATTACHMENT2,
                             GL_COLOR_ATTACHMENT3};
-    glDrawBuffers(mTex.size(), drawbuffers);
-            
+    glDrawBuffers(static_cast<GLsizei>(mTex.size()), drawbuffers);
+
     if (mTex.empty())
     { //no color buffer to draw to
         GLenum drawbuffers[] = {GL_NONE};
@@ -453,7 +453,7 @@ void LLRenderTarget::clear(U32 mask_in)
     if (mUseDepth)
     {
         mask |= GL_DEPTH_BUFFER_BIT;
-        
+
     }
     if (mFBO)
     {
@@ -486,7 +486,7 @@ U32 LLRenderTarget::getTexture(U32 attachment) const
 
 U32 LLRenderTarget::getNumTextures() const
 {
-    return mTex.size();
+    return static_cast<U32>(mTex.size());
 }
 
 void LLRenderTarget::bindTexture(U32 index, S32 channel, LLTexUnit::eTextureFilterOptions filter_options)
@@ -548,7 +548,7 @@ void LLRenderTarget::flush()
 
 bool LLRenderTarget::isComplete() const
 {
-    return (!mTex.empty() || mDepth) ? true : false;
+    return !mTex.empty() || mDepth;
 }
 
 void LLRenderTarget::getViewport(S32* viewport)
@@ -563,7 +563,7 @@ bool LLRenderTarget::isBoundInStack() const
 {
     LLRenderTarget* cur = sBoundTarget;
     while (cur && cur != this)
-    { 
+    {
         cur = cur->mPreviousRT;
     }
 
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index 0f3716bc18..a8e9f20b40 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -66,14 +66,14 @@ LLShaderMgr * LLShaderMgr::instance()
     return sInstance;
 }
 
-BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
+bool LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 {
     llassert_always(shader != NULL);
     LLShaderFeatures *features = & shader->mFeatures;
 
     if (features->attachNothing)
     {
-        return TRUE;
+        return true;
     }
     //////////////////////////////////////
     // Attach Vertex Shader Features First
@@ -84,7 +84,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachVertexObject("windlight/atmosphericsVarsV.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -92,7 +92,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachVertexObject("windlight/atmosphericsHelpersV.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -102,40 +102,40 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
         {
             if (!shader->attachVertexObject("lighting/lightFuncSpecularV.glsl"))
             {
-                return FALSE;
+                return false;
             }
 
             if (!features->isAlphaLighting)
             {
                 if (!shader->attachVertexObject("lighting/sumLightsSpecularV.glsl"))
                 {
-                    return FALSE;
+                    return false;
                 }
             }
 
             if (!shader->attachVertexObject("lighting/lightSpecularV.glsl"))
             {
-                return FALSE;
+                return false;
             }
         }
         else
         {
             if (!shader->attachVertexObject("lighting/lightFuncV.glsl"))
             {
-                return FALSE;
+                return false;
             }
 
             if (!features->isAlphaLighting)
             {
                 if (!shader->attachVertexObject("lighting/sumLightsV.glsl"))
                 {
-                    return FALSE;
+                    return false;
                 }
             }
 
             if (!shader->attachVertexObject("lighting/lightV.glsl"))
             {
-                return FALSE;
+                return false;
             }
         }
     }
@@ -145,16 +145,16 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachVertexObject("environment/srgbF.glsl")) // NOTE -- "F" suffix is superfluous here, there is nothing fragment specific in srgbF
         {
-            return FALSE;
+            return false;
         }
 
         if (!shader->attachVertexObject("windlight/atmosphericsFuncs.glsl")) {
-            return FALSE;
+            return false;
         }
 
         if (!shader->attachVertexObject("windlight/atmosphericsV.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -162,7 +162,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachVertexObject("avatar/avatarSkinV.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -171,13 +171,13 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
         shader->mRiggedVariant = shader;
         if (!shader->attachVertexObject("avatar/objectSkinV.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
     if (!shader->attachVertexObject("deferred/textureUtilV.glsl"))
     {
-        return FALSE;
+        return false;
     }
 
     ///////////////////////////////////////
@@ -188,14 +188,14 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 
     if (!shader->attachFragmentObject("deferred/globalF.glsl"))
     {
-        return FALSE;
+        return false;
     }
 
     if (features->hasSrgb || features->hasAtmospherics || features->calculatesAtmospherics || features->isDeferred)
     {
         if (!shader->attachFragmentObject("environment/srgbF.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -203,7 +203,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachFragmentObject("windlight/atmosphericsVarsF.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -211,7 +211,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachFragmentObject("windlight/atmosphericsHelpersF.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -220,7 +220,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachFragmentObject("deferred/deferredUtil.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -228,7 +228,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachFragmentObject("deferred/screenSpaceReflUtil.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -236,7 +236,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachFragmentObject("deferred/shadowUtil.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -244,7 +244,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachFragmentObject("deferred/reflectionProbeF.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -252,7 +252,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachFragmentObject("deferred/aoUtil.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -260,19 +260,19 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachFragmentObject("windlight/gammaF.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
     if (features->hasAtmospherics || features->isDeferred)
     {
         if (!shader->attachFragmentObject("windlight/atmosphericsFuncs.glsl")) {
-            return FALSE;
+            return false;
         }
 
         if (!shader->attachFragmentObject("windlight/atmosphericsF.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -280,7 +280,7 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachFragmentObject("deferred/pbrterrainUtilF.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -289,26 +289,26 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachFragmentObject("environment/waterFogF.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
     if (features->hasLighting)
     {
-        if (features->disableTextureIndex)
+        if (features->mIndexedTextureChannels <= 1)
         {
             if (features->hasAlphaMask)
             {
                 if (!shader->attachFragmentObject("lighting/lightAlphaMaskNonIndexedF.glsl"))
                 {
-                    return FALSE;
+                    return false;
                 }
             }
             else
             {
                 if (!shader->attachFragmentObject("lighting/lightNonIndexedF.glsl"))
                 {
-                    return FALSE;
+                    return false;
                 }
             }
         }
@@ -318,14 +318,14 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
             {
                 if (!shader->attachFragmentObject("lighting/lightAlphaMaskF.glsl"))
                 {
-                    return FALSE;
+                    return false;
                 }
             }
             else
             {
                 if (!shader->attachFragmentObject("lighting/lightF.glsl"))
                 {
-                    return FALSE;
+                    return false;
                 }
             }
             shader->mFeatures.mIndexedTextureChannels = llmax(LLGLSLShader::sIndexedTextureChannels, 1);
@@ -336,18 +336,18 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
     {
         if (!shader->attachVertexObject("objects/nonindexedTextureV.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
     else
     {
         if (!shader->attachVertexObject("objects/indexedTextureV.glsl"))
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //============================================================================
@@ -421,7 +421,7 @@ void LLShaderMgr::dumpShaderSource(U32 shader_code_count, GLchar** shader_code_t
     LL_CONT << LL_ENDL;
 }
 
-void LLShaderMgr::dumpObjectLog(GLuint ret, BOOL warns, const std::string& filename)
+void LLShaderMgr::dumpObjectLog(GLuint ret, bool warns, const std::string& filename)
 {
     std::string log;
     log = get_object_log(ret);
@@ -689,7 +689,7 @@ GLuint LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shader_lev
         {  //switches are supported in GLSL 1.30 and later
             if (gGLManager.mIsNVIDIA)
             { //switches are unreliable on some NVIDIA drivers
-                for (U32 i = 0; i < texture_index_channels; ++i)
+                for (S32 i = 0; i < texture_index_channels; ++i)
                 {
                     std::string if_string = llformat("\t%sif (vary_texture_index == %d) { return texture(tex%d, texcoord); }\n", i > 0 ? "else " : "", i, i);
                     extra_code_text[extra_code_count++] = strdup(if_string.c_str());
@@ -877,7 +877,7 @@ GLuint LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shader_lev
         {
             //an error occured, print log
             LL_WARNS("ShaderLoading") << "GLSL Compilation Error:" << LL_ENDL;
-            dumpObjectLog(ret, TRUE, open_file_name);
+            dumpObjectLog(ret, true, open_file_name);
             dumpShaderSource(shader_code_count, shader_code_text);
             glDeleteShader(ret); //no longer need handle
             ret = 0;
@@ -919,7 +919,7 @@ GLuint LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shader_lev
     return ret;
 }
 
-BOOL LLShaderMgr::linkProgramObject(GLuint obj, BOOL suppress_errors)
+bool LLShaderMgr::linkProgramObject(GLuint obj, bool suppress_errors)
 {
     //check for errors
     {
@@ -936,7 +936,7 @@ BOOL LLShaderMgr::linkProgramObject(GLuint obj, BOOL suppress_errors)
         {
             //an error occured, print log
             LL_SHADER_LOADING_WARNS() << "GLSL Linker Error:" << LL_ENDL;
-            dumpObjectLog(obj, TRUE, "linker");
+            dumpObjectLog(obj, true, "linker");
             return success;
         }
     }
@@ -947,12 +947,12 @@ BOOL LLShaderMgr::linkProgramObject(GLuint obj, BOOL suppress_errors)
     {
         LL_SHADER_LOADING_WARNS() << "GLSL Linker: Running in Software:" << LL_ENDL;
         success = GL_FALSE;
-        suppress_errors = FALSE;
+        suppress_errors = false;
     }
     return success;
 }
 
-BOOL LLShaderMgr::validateProgramObject(GLuint obj)
+bool LLShaderMgr::validateProgramObject(GLuint obj)
 {
     //check program validity against current GL
     glValidateProgram(obj);
@@ -965,7 +965,7 @@ BOOL LLShaderMgr::validateProgramObject(GLuint obj)
     }
     else
     {
-        dumpObjectLog(obj, FALSE);
+        dumpObjectLog(obj, false);
     }
 
     return success;
@@ -1120,7 +1120,7 @@ bool LLShaderMgr::saveCachedProgramBinary(LLGLSLShader* shader)
         program_binary.resize(binary_info.mBinaryLength);
 
         GLenum error = glGetError(); // Clear current error
-        glGetProgramBinary(shader->mProgramObject, program_binary.size() * sizeof(U8), nullptr, &binary_info.mBinaryFormat, program_binary.data());
+        glGetProgramBinary(shader->mProgramObject, static_cast<GLsizei>(program_binary.size() * sizeof(U8)), nullptr, &binary_info.mBinaryFormat, program_binary.data());
         error = glGetError();
         if (error == GL_NO_ERROR)
         {
@@ -1157,6 +1157,7 @@ void LLShaderMgr::initAttribsAndUniforms()
     mReservedAttribs.push_back("weight");
     mReservedAttribs.push_back("weight4");
     mReservedAttribs.push_back("clothing");
+    mReservedAttribs.push_back("joint");
     mReservedAttribs.push_back("texture_index");
 
     //matrix state
@@ -1177,9 +1178,19 @@ void LLShaderMgr::initAttribsAndUniforms()
     mReservedUniforms.push_back("texture_base_color_transform"); // (GLTF)
     mReservedUniforms.push_back("texture_normal_transform"); // (GLTF)
     mReservedUniforms.push_back("texture_metallic_roughness_transform"); // (GLTF)
+    mReservedUniforms.push_back("texture_occlusion_transform"); // (GLTF)
     mReservedUniforms.push_back("texture_emissive_transform"); // (GLTF)
+    mReservedUniforms.push_back("base_color_texcoord"); // (GLTF)
+    mReservedUniforms.push_back("emissive_texcoord"); // (GLTF)
+    mReservedUniforms.push_back("normal_texcoord"); // (GLTF)
+    mReservedUniforms.push_back("metallic_roughness_texcoord"); // (GLTF)
+    mReservedUniforms.push_back("occlusion_texcoord"); // (GLTF)
+    mReservedUniforms.push_back("gltf_node_id"); // (GLTF)
+    mReservedUniforms.push_back("gltf_material_id"); // (GLTF)
+
+    mReservedUniforms.push_back("terrain_texture_transforms"); // (GLTF)
 
-    llassert(mReservedUniforms.size() == LLShaderMgr::TEXTURE_EMISSIVE_TRANSFORM+1);
+    llassert(mReservedUniforms.size() == LLShaderMgr::TERRAIN_TEXTURE_TRANSFORMS +1);
 
     mReservedUniforms.push_back("viewport");
 
@@ -1223,6 +1234,9 @@ void LLShaderMgr::initAttribsAndUniforms()
     mReservedUniforms.push_back("diffuseMap");
     mReservedUniforms.push_back("altDiffuseMap");
     mReservedUniforms.push_back("specularMap");
+    mReservedUniforms.push_back("metallicRoughnessMap");
+    mReservedUniforms.push_back("normalMap");
+    mReservedUniforms.push_back("occlusionMap");
     mReservedUniforms.push_back("emissiveMap");
     mReservedUniforms.push_back("bumpMap");
     mReservedUniforms.push_back("bumpMap2");
@@ -1234,7 +1248,6 @@ void LLShaderMgr::initAttribsAndUniforms()
     mReservedUniforms.push_back("heroProbes");
     mReservedUniforms.push_back("cloud_noise_texture");
     mReservedUniforms.push_back("cloud_noise_texture_next");
-    mReservedUniforms.push_back("fullbright");
     mReservedUniforms.push_back("lightnorm");
     mReservedUniforms.push_back("sunlight_color");
     mReservedUniforms.push_back("ambient_color");
@@ -1346,7 +1359,6 @@ void LLShaderMgr::initAttribsAndUniforms()
 
     llassert(mReservedUniforms.size() == LLShaderMgr::DEFERRED_SHADOW5+1);
 
-    mReservedUniforms.push_back("normalMap");
     mReservedUniforms.push_back("positionMap");
     mReservedUniforms.push_back("diffuseRect");
     mReservedUniforms.push_back("specularRect");
@@ -1359,7 +1371,6 @@ void LLShaderMgr::initAttribsAndUniforms()
     mReservedUniforms.push_back("bloomMap");
     mReservedUniforms.push_back("projectionMap");
     mReservedUniforms.push_back("norm_mat");
-    mReservedUniforms.push_back("texture_gamma");
 
     mReservedUniforms.push_back("specular_color");
     mReservedUniforms.push_back("env_intensity");
diff --git a/indra/llrender/llshadermgr.h b/indra/llrender/llshadermgr.h
index 8b13e822d5..fe6137c448 100644
--- a/indra/llrender/llshadermgr.h
+++ b/indra/llrender/llshadermgr.h
@@ -56,7 +56,17 @@ public:
         TEXTURE_BASE_COLOR_TRANSFORM,         //  "texture_base_color_transform" (GLTF)
         TEXTURE_NORMAL_TRANSFORM,             //  "texture_normal_transform" (GLTF)
         TEXTURE_METALLIC_ROUGHNESS_TRANSFORM, //  "texture_metallic_roughness_transform" (GLTF)
+        TEXTURE_OCCLUSION_TRANSFORM,          //  "texture_occlusion_transform" (GLTF)
         TEXTURE_EMISSIVE_TRANSFORM,           //  "texture_emissive_transform" (GLTF)
+        BASE_COLOR_TEXCOORD,                  //  "base_color_texcoord" (GLTF)
+        EMISSIVE_TEXCOORD,                    //  "emissive_texcoord" (GLTF)
+        NORMAL_TEXCOORD,                      //  "normal_texcoord" (GLTF)
+        METALLIC_ROUGHNESS_TEXCOORD,          //  "metallic_roughness_texcoord" (GLTF)
+        OCCLUSION_TEXCOORD,                   //  "occlusion_texcoord" (GLTF)
+        GLTF_NODE_ID,                         //  "gltf_node_id" (GLTF)
+        GLTF_MATERIAL_ID,                     //  "gltf_material_id" (GLTF)
+
+        TERRAIN_TEXTURE_TRANSFORMS,           //  "terrain_texture_transforms" (GLTF)
 
         VIEWPORT,                           //  "viewport"
         LIGHT_POSITION,                     //  "light_position"
@@ -91,6 +101,9 @@ public:
         DIFFUSE_MAP,                        //  "diffuseMap"
         ALTERNATE_DIFFUSE_MAP,              //  "altDiffuseMap"
         SPECULAR_MAP,                       //  "specularMap"
+        METALLIC_ROUGHNESS_MAP,             //  "metallicRoughnessMap"
+        NORMAL_MAP,                         //  "normalMap"
+        OCCLUSION_MAP,                      //  "occlusionMap"
         EMISSIVE_MAP,                       //  "emissiveMap"
         BUMP_MAP,                           //  "bumpMap"
         BUMP_MAP2,                          //  "bumpMap2"
@@ -102,7 +115,6 @@ public:
         HERO_PROBE,                         //  "heroProbes"
         CLOUD_NOISE_MAP,                    //  "cloud_noise_texture"
         CLOUD_NOISE_MAP_NEXT,               //  "cloud_noise_texture_next"
-        FULLBRIGHT,                         //  "fullbright"
         LIGHTNORM,                          //  "lightnorm"
         SUNLIGHT_COLOR,                     //  "sunlight_color"
         AMBIENT,                            //  "ambient_color"
@@ -200,7 +212,6 @@ public:
         DEFERRED_SHADOW3,                   //  "shadowMap3"
         DEFERRED_SHADOW4,                   //  "shadowMap4"
         DEFERRED_SHADOW5,                   //  "shadowMap5"
-        DEFERRED_NORMAL,                    //  "normalMap"
         DEFERRED_POSITION,                  //  "positionMap"
         DEFERRED_DIFFUSE,                   //  "diffuseRect"
         DEFERRED_SPECULAR,                  //  "specularRect"
@@ -213,7 +224,6 @@ public:
         DEFERRED_BLOOM,                     //  "bloomMap"
         DEFERRED_PROJECTION,                //  "projectionMap"
         DEFERRED_NORM_MATRIX,               //  "norm_mat"
-        TEXTURE_GAMMA,                      //  "texture_gamma"
         SPECULAR_COLOR,                     //  "specular_color"
         ENVIRONMENT_INTENSITY,              //  "env_intensity"
 
@@ -328,11 +338,11 @@ public:
 
     virtual void initAttribsAndUniforms(void);
 
-    BOOL attachShaderFeatures(LLGLSLShader * shader);
-    void dumpObjectLog(GLuint ret, BOOL warns = TRUE, const std::string& filename = "");
+    bool attachShaderFeatures(LLGLSLShader * shader);
+    void dumpObjectLog(GLuint ret, bool warns = true, const std::string& filename = "");
     void dumpShaderSource(U32 shader_code_count, GLchar** shader_code_text);
-    BOOL    linkProgramObject(GLuint obj, BOOL suppress_errors = FALSE);
-    BOOL    validateProgramObject(GLuint obj);
+    bool    linkProgramObject(GLuint obj, bool suppress_errors = false);
+    bool    validateProgramObject(GLuint obj);
     GLuint loadShaderFile(const std::string& filename, S32 & shader_level, GLenum type, std::map<std::string, std::string>* defines = NULL, S32 texture_index_channels = -1);
 
     // Implemented in the application to actually point to the shader directory.
diff --git a/indra/llrender/lltexturemanagerbridge.h b/indra/llrender/lltexturemanagerbridge.h
index 0b76ee4de8..e742324e4a 100644
--- a/indra/llrender/lltexturemanagerbridge.h
+++ b/indra/llrender/lltexturemanagerbridge.h
@@ -36,8 +36,8 @@ class LLTextureManagerBridge
 public:
     virtual ~LLTextureManagerBridge() {}
 
-    virtual LLPointer<LLGLTexture> getLocalTexture(BOOL usemipmaps = TRUE, BOOL generate_gl_tex = TRUE) = 0;
-    virtual LLPointer<LLGLTexture> getLocalTexture(const U32 width, const U32 height, const U8 components, BOOL usemipmaps, BOOL generate_gl_tex = TRUE) = 0;
+    virtual LLPointer<LLGLTexture> getLocalTexture(bool usemipmaps = true, bool generate_gl_tex = true) = 0;
+    virtual LLPointer<LLGLTexture> getLocalTexture(const U32 width, const U32 height, const U8 components, bool usemipmaps, bool generate_gl_tex = true) = 0;
     virtual LLGLTexture* getFetchedTexture(const LLUUID &image_id) = 0;
 };
 
diff --git a/indra/llrender/lluiimage.inl b/indra/llrender/lluiimage.inl
index a69616c0c1..dff1fcdfcc 100644
--- a/indra/llrender/lluiimage.inl
+++ b/indra/llrender/lluiimage.inl
@@ -36,7 +36,7 @@ void LLUIImage::draw(S32 x, S32 y, S32 width, S32 height, const LLColor4& color)
         width, height,
         mImage,
         color,
-        FALSE,
+        false,
         mClipRegion,
         mScaleRegion,
         mScaleStyle == SCALE_INNER);
@@ -49,7 +49,7 @@ void LLUIImage::drawSolid(S32 x, S32 y, S32 width, S32 height, const LLColor4& c
         width, height,
         mImage,
         color,
-        TRUE,
+        true,
         mClipRegion,
         mScaleRegion,
         mScaleStyle == SCALE_INNER);
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index db881efd2b..b522eb5218 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -294,6 +294,62 @@ static GLuint gen_buffer()
 
 #define ANALYZE_VBO_POOL 0
 
+#if 0 // LL_DARWIN
+
+// experimental -- disable VBO pooling on OS X and use glMapBuffer
+class LLVBOPool
+{
+public:
+    U64 mAllocated = 0;
+
+    U64 getVramBytesUsed()
+    {
+        return mAllocated;
+    }
+
+    void allocate(GLenum type, U32 size, GLuint& name, U8*& data)
+    {
+        LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX;
+        STOP_GLERROR;
+        llassert(type == GL_ARRAY_BUFFER || type == GL_ELEMENT_ARRAY_BUFFER);
+        llassert(name == 0); // non zero name indicates a gl name that wasn't freed
+        llassert(data == nullptr);  // non null data indicates a buffer that wasn't freed
+        llassert(size >= 2);  // any buffer size smaller than a single index is nonsensical
+
+        mAllocated += size;
+
+        { //allocate a new buffer
+            LL_PROFILE_GPU_ZONE("vbo alloc");
+            // ON OS X, we don't allocate a VBO until the last possible moment
+            // in unmapBuffer
+            data = (U8*) ll_aligned_malloc_16(size);
+            STOP_GLERROR;
+        }
+    }
+
+    void free(GLenum type, U32 size, GLuint name, U8* data)
+    {
+        LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX;
+        llassert(type == GL_ARRAY_BUFFER || type == GL_ELEMENT_ARRAY_BUFFER);
+        llassert(size >= 2);
+
+        if (data)
+        {
+            ll_aligned_free_16(data);
+        }
+
+        mAllocated -= size;
+        STOP_GLERROR;
+        if (name)
+        {
+            glDeleteBuffers(1, &name);
+        }
+        STOP_GLERROR;
+    }
+};
+
+#else
+
 class LLVBOPool
 {
 public:
@@ -557,9 +613,8 @@ public:
         mIBOPool.clear();
         mVBOPool.clear();
     }
-
-
 };
+#endif
 
 static LLVBOPool* sVBOPool = nullptr;
 
@@ -594,6 +649,7 @@ const U32 LLVertexBuffer::sTypeSize[LLVertexBuffer::TYPE_MAX] =
     sizeof(F32),       // TYPE_WEIGHT,
     sizeof(LLVector4), // TYPE_WEIGHT4,
     sizeof(LLVector4), // TYPE_CLOTHWEIGHT,
+    sizeof(U64),       // TYPE_JOINT,
     sizeof(LLVector4), // TYPE_TEXTURE_INDEX (actually exists as position.w), no extra data, but stride is 16 bytes
 };
 
@@ -611,6 +667,7 @@ static const std::string vb_type_name[] =
     "TYPE_WEIGHT",
     "TYPE_WEIGHT4",
     "TYPE_CLOTHWEIGHT",
+    "TYPE_JOINT"
     "TYPE_TEXTURE_INDEX",
     "TYPE_MAX",
     "TYPE_INDEX",
@@ -678,6 +735,8 @@ void LLVertexBuffer::drawElements(U32 mode, const LLVector4a* pos, const LLVecto
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VERTEX;
     llassert(LLGLSLShader::sCurBoundShaderPtr != NULL);
 
+    STOP_GLERROR;
+
     gGL.syncMatrices();
 
     U32 mask = LLVertexBuffer::MAP_VERTEX;
@@ -734,6 +793,45 @@ bool LLVertexBuffer::validateRange(U32 start, U32 end, U32 count, U32 indices_of
     }
 
     {
+#if 0  // not a reliable test for VBOs that are not backed by a CPU buffer
+        U16* idx = (U16*) mMappedIndexData+indices_offset;
+        for (U32 i = 0; i < count; ++i)
+        {
+            llassert(idx[i] >= start);
+            llassert(idx[i] <= end);
+
+            if (idx[i] < start || idx[i] > end)
+            {
+                LL_ERRS() << "Index out of range: " << idx[i] << " not in [" << start << ", " << end << "]" << LL_ENDL;
+            }
+        }
+
+        LLVector4a* v = (LLVector4a*)mMappedData;
+
+        for (U32 i = start; i <= end; ++i)
+        {
+            if (!v[i].isFinite3())
+            {
+                LL_ERRS() << "Non-finite vertex position data detected." << LL_ENDL;
+            }
+        }
+
+        LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
+
+        if (shader && shader->mFeatures.mIndexedTextureChannels > 1)
+        {
+            LLVector4a* v = (LLVector4a*) mMappedData;
+
+            for (U32 i = start; i < end; i++)
+            {
+                U32 idx = (U32) (v[i][3]+0.25f);
+                if (idx >= (U32)shader->mFeatures.mIndexedTextureChannels)
+                {
+                    LL_ERRS() << "Bad texture index found in vertex data stream." << LL_ENDL;
+                }
+            }
+        }
+#endif
     }
 
     return true;
@@ -751,8 +849,10 @@ void LLVertexBuffer::drawRange(U32 mode, U32 start, U32 end, U32 count, U32 indi
     llassert(mGLBuffer == sGLRenderBuffer);
     llassert(mGLIndices == sGLRenderIndices);
     gGL.syncMatrices();
+    STOP_GLERROR;
     glDrawRangeElements(sGLMode[mode], start, end, count, mIndicesType,
         (GLvoid*) (indices_offset * (size_t) mIndicesStride));
+    STOP_GLERROR;
 }
 
 void LLVertexBuffer::drawRangeFast(U32 mode, U32 start, U32 end, U32 count, U32 indices_offset) const
@@ -775,7 +875,9 @@ void LLVertexBuffer::drawArrays(U32 mode, U32 first, U32 count) const
     llassert(mGLIndices == sGLRenderIndices);
 
     gGL.syncMatrices();
+    STOP_GLERROR;
     glDrawArrays(sGLMode[mode], first, count);
+    STOP_GLERROR;
 }
 
 //static
@@ -801,9 +903,10 @@ void LLVertexBuffer::initClass(LLWindow* window)
 //static
 void LLVertexBuffer::unbind()
 {
+    STOP_GLERROR;
     glBindBuffer(GL_ARRAY_BUFFER, 0);
     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
-
+    STOP_GLERROR;
     sGLRenderBuffer = 0;
     sGLRenderIndices = 0;
 }
@@ -1200,6 +1303,7 @@ void LLVertexBuffer::flush_vbo(GLenum target, U32 start, U32 end, void* data, U8
 
 void LLVertexBuffer::unmapBuffer()
 {
+    STOP_GLERROR;
     struct SortMappedRegion
     {
         bool operator()(const MappedRegion& lhs, const MappedRegion& rhs)
@@ -1479,12 +1583,15 @@ void LLVertexBuffer::setBuffer()
         glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mGLIndices);
         sGLRenderIndices = mGLIndices;
     }
+
+    STOP_GLERROR;
 }
 
 
 // virtual (default)
 void LLVertexBuffer::setupVertexBuffer()
 {
+    STOP_GLERROR;
     U8* base = nullptr;
 
     U32 data_mask = LLGLSLShader::sCurBoundShaderPtr->mAttributeMask;
@@ -1556,6 +1663,12 @@ void LLVertexBuffer::setupVertexBuffer()
         void* ptr = (void*)(base + mOffsets[TYPE_WEIGHT4]);
         glVertexAttribPointer(loc, 4, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_WEIGHT4], ptr);
     }
+    if (data_mask & MAP_JOINT)
+    {
+        AttributeType loc = TYPE_JOINT;
+        void* ptr = (void*)(base + mOffsets[TYPE_JOINT]);
+        glVertexAttribIPointer(loc, 4, GL_UNSIGNED_SHORT, LLVertexBuffer::sTypeSize[TYPE_JOINT], ptr);
+    }
     if (data_mask & MAP_CLOTHWEIGHT)
     {
         AttributeType loc = TYPE_CLOTHWEIGHT;
@@ -1574,6 +1687,7 @@ void LLVertexBuffer::setupVertexBuffer()
         void* ptr = (void*)(base + mOffsets[TYPE_VERTEX]);
         glVertexAttribPointer(loc, 3, GL_FLOAT, GL_FALSE, LLVertexBuffer::sTypeSize[TYPE_VERTEX], ptr);
     }
+    STOP_GLERROR;
 }
 
 void LLVertexBuffer::setPositionData(const LLVector4a* data)
@@ -1611,12 +1725,10 @@ void LLVertexBuffer::setWeight4Data(const LLVector4a* data)
     flush_vbo(GL_ARRAY_BUFFER, mOffsets[TYPE_WEIGHT4], mOffsets[TYPE_WEIGHT4] + sTypeSize[TYPE_WEIGHT4] * getNumVerts() - 1, (U8*) data, mMappedData);
 }
 
-/*
 void LLVertexBuffer::setJointData(const U64* data)
 {
     flush_vbo(GL_ARRAY_BUFFER, mOffsets[TYPE_JOINT], mOffsets[TYPE_JOINT] + sTypeSize[TYPE_JOINT] * getNumVerts() - 1, (U8*) data, mMappedData);
 }
-*/
 
 void LLVertexBuffer::setIndexData(const U16* data)
 {
@@ -1669,12 +1781,10 @@ void LLVertexBuffer::setWeight4Data(const LLVector4a* data, U32 offset, U32 coun
     flush_vbo(GL_ARRAY_BUFFER, mOffsets[TYPE_WEIGHT4] + offset * sTypeSize[TYPE_WEIGHT4], mOffsets[TYPE_WEIGHT4] + (offset + count) * sTypeSize[TYPE_WEIGHT4] - 1, (U8*)data, mMappedData);
 }
 
-/*
 void LLVertexBuffer::setJointData(const U64* data, U32 offset, U32 count)
 {
     flush_vbo(GL_ARRAY_BUFFER, mOffsets[TYPE_JOINT] + offset * sTypeSize[TYPE_JOINT], mOffsets[TYPE_JOINT] + (offset + count) * sTypeSize[TYPE_JOINT] - 1, (U8*)data, mMappedData);
 }
-*/
 
 void LLVertexBuffer::setIndexData(const U16* data, U32 offset, U32 count)
 {
diff --git a/indra/llrender/llvertexbuffer.h b/indra/llrender/llvertexbuffer.h
index 9d7a0bae2c..4dd375a4af 100644
--- a/indra/llrender/llvertexbuffer.h
+++ b/indra/llrender/llvertexbuffer.h
@@ -110,6 +110,7 @@ public:
         TYPE_WEIGHT,            //  "weight"
         TYPE_WEIGHT4,           //  "weight4"
         TYPE_CLOTHWEIGHT,       //  "clothing"
+        TYPE_JOINT,             //  "joint"
         TYPE_TEXTURE_INDEX,     //  "texture_index"
         TYPE_MAX,   // TYPE_MAX is the size/boundary marker for attributes that go in the vertex buffer
         TYPE_INDEX, // TYPE_INDEX is beyond _MAX because it lives in a separate (index) buffer
@@ -129,6 +130,7 @@ public:
         MAP_WEIGHT = (1<<TYPE_WEIGHT),
         MAP_WEIGHT4 = (1<<TYPE_WEIGHT4),
         MAP_CLOTHWEIGHT = (1<<TYPE_CLOTHWEIGHT),
+        MAP_JOINT = (1<<TYPE_JOINT),
         MAP_TEXTURE_INDEX = (1<<TYPE_TEXTURE_INDEX),
     };
 
@@ -193,7 +195,7 @@ public:
     void setNormalData(const LLVector4a* data);
     void setTangentData(const LLVector4a* data);
     void setWeight4Data(const LLVector4a* data);
-    void setTexCoordData(const LLVector2* data);
+    void setJointData(const U64* data);
     void setTexCoord0Data(const LLVector2* data);
     void setTexCoord1Data(const LLVector2* data);
     void setColorData(const LLColor4U* data);
@@ -204,7 +206,7 @@ public:
     void setNormalData(const LLVector4a* data, U32 offset, U32 count);
     void setTangentData(const LLVector4a* data, U32 offset, U32 count);
     void setWeight4Data(const LLVector4a* data, U32 offset, U32 count);
-    //void setJointData(const U64* data, U32 offset, U32 count);
+    void setJointData(const U64* data, U32 offset, U32 count);
     void setTexCoord0Data(const LLVector2* data, U32 offset, U32 count);
     void setTexCoord1Data(const LLVector2* data, U32 offset, U32 count);
     void setColorData(const LLColor4U* data, U32 offset, U32 count);
@@ -276,7 +278,7 @@ private:
         : LLVertexBuffer(typemask)
     {}
 
-    bool    allocateBuffer(S32 nverts, S32 nindices, BOOL create) { return allocateBuffer(nverts, nindices); }
+    bool    allocateBuffer(S32 nverts, S32 nindices, bool create) { return allocateBuffer(nverts, nindices); }
 
 public:
 
diff --git a/indra/llui/llaccordionctrl.cpp b/indra/llui/llaccordionctrl.cpp
index 3feb989ed5..4682044d6e 100644
--- a/indra/llui/llaccordionctrl.cpp
+++ b/indra/llui/llaccordionctrl.cpp
@@ -103,7 +103,7 @@ void LLAccordionCtrl::draw()
 }
 
 //---------------------------------------------------------------------------------
-BOOL LLAccordionCtrl::postBuild()
+bool LLAccordionCtrl::postBuild()
 {
     static LLUICachedControl<S32> scrollbar_size("UIScrollbarSize", 0);
 
@@ -127,7 +127,7 @@ BOOL LLAccordionCtrl::postBuild()
 
     mScrollbar = LLUICtrlFactory::create<LLScrollbar>(sbparams);
     LLView::addChild(mScrollbar);
-    mScrollbar->setVisible(FALSE);
+    mScrollbar->setVisible(false);
     mScrollbar->setFollowsRight();
     mScrollbar->setFollowsTop();
     mScrollbar->setFollowsBottom();
@@ -167,7 +167,7 @@ BOOL LLAccordionCtrl::postBuild()
 
     updateNoTabsHelpTextVisibility();
 
-    return TRUE;
+    return true;
 }
 
 
@@ -179,7 +179,7 @@ LLAccordionCtrl::~LLAccordionCtrl()
 
 //---------------------------------------------------------------------------------
 
-void LLAccordionCtrl::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLAccordionCtrl::reshape(S32 width, S32 height, bool called_from_parent)
 {
     // adjust our rectangle
     LLRect rcLocal = getRect();
@@ -199,7 +199,7 @@ void LLAccordionCtrl::reshape(S32 width, S32 height, BOOL called_from_parent)
 }
 
 //---------------------------------------------------------------------------------
-BOOL LLAccordionCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLAccordionCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     return LLPanel::handleRightMouseDown(x, y, mask);
 }
@@ -243,7 +243,7 @@ void LLAccordionCtrl::showScrollbar(S32 width, S32 height)
 {
     bool was_visible = mScrollbar->getVisible();
 
-    mScrollbar->setVisible(TRUE);
+    mScrollbar->setVisible(true);
 
     static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
 
@@ -265,9 +265,9 @@ void LLAccordionCtrl::showScrollbar(S32 width, S32 height)
 
 void LLAccordionCtrl::hideScrollbar(S32 width, S32 height)
 {
-    if (mScrollbar->getVisible() == FALSE)
+    if (!mScrollbar->getVisible())
         return;
-    mScrollbar->setVisible(FALSE);
+    mScrollbar->setVisible(false);
 
     static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
 
@@ -391,7 +391,7 @@ void LLAccordionCtrl::updateNoTabsHelpTextVisibility()
         }
     }
 
-    mNoVisibleTabsHelpText->setVisible(visible_exists ? FALSE : TRUE);
+    mNoVisibleTabsHelpText->setVisible(!visible_exists);
 }
 
 void LLAccordionCtrl::arrangeSingle()
@@ -407,7 +407,7 @@ void LLAccordionCtrl::arrangeSingle()
     {
         LLAccordionCtrlTab* accordion_tab = dynamic_cast<LLAccordionCtrlTab*>(mAccordionTabs[i]);
 
-        if (accordion_tab->getVisible() == FALSE) // Skip hidden accordion tabs
+        if (!accordion_tab->getVisible()) // Skip hidden accordion tabs
             continue;
         if (!accordion_tab->isExpanded() )
         {
@@ -421,7 +421,7 @@ void LLAccordionCtrl::arrangeSingle()
     {
         LLAccordionCtrlTab* accordion_tab = dynamic_cast<LLAccordionCtrlTab*>(mAccordionTabs[i]);
 
-        if (accordion_tab->getVisible() == FALSE) // Skip hidden accordion tabs
+        if (!accordion_tab->getVisible()) // Skip hidden accordion tabs
             continue;
         if (!accordion_tab->isExpanded() )
         {
@@ -469,7 +469,7 @@ void LLAccordionCtrl::arrangeMultiple()
     {
         LLAccordionCtrlTab* accordion_tab = dynamic_cast<LLAccordionCtrlTab*>(mAccordionTabs[i]);
 
-        if (accordion_tab->getVisible() == FALSE) // Skip hidden accordion tabs
+        if (!accordion_tab->getVisible()) // Skip hidden accordion tabs
             continue;
 
         if (!accordion_tab->isExpanded() )
@@ -484,7 +484,7 @@ void LLAccordionCtrl::arrangeMultiple()
             if (mFitParent)
             {
                 // All expanded tabs will have equal height
-                panel_height = calcExpandedTabHeight(i, panel_top);
+                panel_height = calcExpandedTabHeight(static_cast<S32>(i), panel_top);
                 ctrlSetLeftTopAndSize(accordion_tab, panel_left, panel_top, panel_width, panel_height);
 
                 // Try to make accordion tab fit accordion view height.
@@ -552,24 +552,24 @@ void LLAccordionCtrl::arrange()
 
 //---------------------------------------------------------------------------------
 
-BOOL LLAccordionCtrl::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLAccordionCtrl::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if (LLPanel::handleScrollWheel(x, y, clicks))
-        return TRUE;
+        return true;
     if (mScrollbar->getVisible() && mScrollbar->handleScrollWheel(0, 0, clicks))
-        return TRUE;
-    return FALSE;
+        return true;
+    return false;
 }
 
-BOOL LLAccordionCtrl::handleKeyHere(KEY key, MASK mask)
+bool LLAccordionCtrl::handleKeyHere(KEY key, MASK mask)
 {
     if (mScrollbar->getVisible() && mScrollbar->handleKeyHere(key, mask))
-        return TRUE;
+        return true;
     return LLPanel::handleKeyHere(key, mask);
 }
 
-BOOL LLAccordionCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask,
-                                        BOOL drop,
+bool LLAccordionCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask,
+                                        bool drop,
                                         EDragAndDropType cargo_type,
                                         void* cargo_data,
                                         EAcceptance* accept,
@@ -577,17 +577,17 @@ BOOL LLAccordionCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask,
 {
     // Scroll folder view if needed.  Never accepts a drag or drop.
     *accept = ACCEPT_NO;
-    BOOL handled = autoScroll(x, y);
+    bool handled = autoScroll(x, y);
 
     if (!handled)
     {
         handled = childrenHandleDragAndDrop(x, y, mask, drop, cargo_type,
                                             cargo_data, accept, tooltip_msg) != NULL;
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLAccordionCtrl::autoScroll(S32 x, S32 y)
+bool LLAccordionCtrl::autoScroll(S32 x, S32 y)
 {
     static LLUICachedControl<S32> scrollbar_size ("UIScrollbarSize", 0);
 
@@ -624,7 +624,7 @@ BOOL LLAccordionCtrl::autoScroll(S32 x, S32 y)
         }
     }
 
-    return scrolling ? TRUE : FALSE;
+    return scrolling;
 }
 
 void LLAccordionCtrl::updateLayout(S32 width, S32 height)
@@ -819,11 +819,11 @@ S32 LLAccordionCtrl::notifyParent(const LLSD& info)
     }
     else if (info.has("child_visibility_change"))
     {
-        BOOL new_visibility = info["child_visibility_change"];
+        bool new_visibility = info["child_visibility_change"];
         if (new_visibility)
         {
             // there is at least one visible tab
-            mNoVisibleTabsHelpText->setVisible(FALSE);
+            mNoVisibleTabsHelpText->setVisible(false);
         }
         else
         {
diff --git a/indra/llui/llaccordionctrl.h b/indra/llui/llaccordionctrl.h
index 2741db24e8..1dfa9100f6 100644
--- a/indra/llui/llaccordionctrl.h
+++ b/indra/llui/llaccordionctrl.h
@@ -88,12 +88,12 @@ public:
     LLAccordionCtrl();
     virtual ~LLAccordionCtrl();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
-    virtual BOOL handleRightMouseDown   ( S32 x, S32 y, MASK mask);
-    virtual BOOL handleScrollWheel      ( S32 x, S32 y, S32 clicks );
-    virtual BOOL handleKeyHere          (KEY key, MASK mask);
-    virtual BOOL handleDragAndDrop      (S32 x, S32 y, MASK mask, BOOL drop,
+    virtual bool handleRightMouseDown   ( S32 x, S32 y, MASK mask);
+    virtual bool handleScrollWheel      ( S32 x, S32 y, S32 clicks );
+    virtual bool handleKeyHere          (KEY key, MASK mask);
+    virtual bool handleDragAndDrop      (S32 x, S32 y, MASK mask, bool drop,
                                          EDragAndDropType cargo_type,
                                          void* cargo_data,
                                          EAcceptance* accept,
@@ -101,7 +101,7 @@ public:
     //
 
     // Call reshape after changing splitter's size
-    virtual void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual void reshape(S32 width, S32 height, bool called_from_parent = true);
 
     void addCollapsibleCtrl(LLView* view);
     void removeCollapsibleCtrl(LLView* view);
@@ -161,7 +161,7 @@ private:
     void    showScrollbar           (S32 width, S32 height);
     void    hideScrollbar           (S32 width, S32 height);
 
-    BOOL    autoScroll              (S32 x, S32 y);
+    bool    autoScroll              (S32 x, S32 y);
 
     /**
      * An adaptor for LLTabComparator
diff --git a/indra/llui/llaccordionctrltab.cpp b/indra/llui/llaccordionctrltab.cpp
index 52893e530f..6d58a2545c 100644
--- a/indra/llui/llaccordionctrltab.cpp
+++ b/indra/llui/llaccordionctrltab.cpp
@@ -64,9 +64,9 @@ public:
 
     virtual void draw();
 
-    virtual void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual void reshape(S32 width, S32 height, bool called_from_parent = true);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     std::string getTitle();
     void setTitle(const std::string& title, const std::string& hl);
@@ -79,8 +79,8 @@ public:
 
     virtual void onMouseEnter(S32 x, S32 y, MASK mask);
     virtual void onMouseLeave(S32 x, S32 y, MASK mask);
-    virtual BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent);
-    virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    virtual bool handleKey(KEY key, MASK mask, bool called_from_parent);
+    virtual bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                    EDragAndDropType cargo_type,
                                    void* cargo_data,
                                    EAcceptance* accept,
@@ -150,9 +150,9 @@ LLAccordionCtrlTab::LLAccordionCtrlTabHeader::~LLAccordionCtrlTabHeader()
 {
 }
 
-BOOL LLAccordionCtrlTab::LLAccordionCtrlTabHeader::postBuild()
+bool LLAccordionCtrlTab::LLAccordionCtrlTabHeader::postBuild()
 {
-    return TRUE;
+    return true;
 }
 
 std::string LLAccordionCtrlTab::LLAccordionCtrlTabHeader::getTitle()
@@ -202,7 +202,7 @@ void LLAccordionCtrlTab::LLAccordionCtrlTabHeader::draw()
     S32 height = getRect().getHeight();
 
     F32 alpha = getCurrentTransparency();
-    gl_rect_2d(0, 0, width - 1, height - 1, mHeaderBGColor.get() % alpha, TRUE);
+    gl_rect_2d(0, 0, width - 1, height - 1, mHeaderBGColor.get() % alpha, true);
 
     LLAccordionCtrlTab* parent = dynamic_cast<LLAccordionCtrlTab*>(getParent());
     bool collapsible = parent && parent->getCollapsible();
@@ -245,7 +245,7 @@ void LLAccordionCtrlTab::LLAccordionCtrlTabHeader::draw()
     LLUICtrl::draw();
 }
 
-void LLAccordionCtrlTab::LLAccordionCtrlTabHeader::reshape(S32 width, S32 height, BOOL called_from_parent /* = TRUE */)
+void LLAccordionCtrlTab::LLAccordionCtrlTabHeader::reshape(S32 width, S32 height, bool called_from_parent /* = true */)
 {
     S32 header_height = mHeaderTextbox->getTextPixelHeight();
 
@@ -276,7 +276,7 @@ void LLAccordionCtrlTab::LLAccordionCtrlTabHeader::onMouseLeave(S32 x, S32 y, MA
     mAutoOpenTimer.stop();
 }
 
-BOOL LLAccordionCtrlTab::LLAccordionCtrlTabHeader::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLAccordionCtrlTab::LLAccordionCtrlTabHeader::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
     if ((key == KEY_LEFT || key == KEY_RIGHT) && mask == MASK_NONE)
     {
@@ -286,8 +286,8 @@ BOOL LLAccordionCtrlTab::LLAccordionCtrlTabHeader::handleKey(KEY key, MASK mask,
     return LLUICtrl::handleKey(key, mask, called_from_parent);
 }
 
-BOOL LLAccordionCtrlTab::LLAccordionCtrlTabHeader::handleDragAndDrop(S32 x, S32 y, MASK mask,
-                                                                     BOOL drop,
+bool LLAccordionCtrlTab::LLAccordionCtrlTabHeader::handleDragAndDrop(S32 x, S32 y, MASK mask,
+                                                                     bool drop,
                                                                      EDragAndDropType cargo_type,
                                                                      void* cargo_data,
                                                                      EAcceptance* accept,
@@ -303,7 +303,7 @@ BOOL LLAccordionCtrlTab::LLAccordionCtrlTabHeader::handleDragAndDrop(S32 x, S32
             {
                 parent->changeOpenClose(false);
                 mAutoOpenTimer.stop();
-                return TRUE;
+                return true;
             }
         }
         else
@@ -380,7 +380,7 @@ LLAccordionCtrlTab::LLAccordionCtrlTab(const LLAccordionCtrlTab::Params&p)
         LLFocusableElement::setFocusLostCallback(boost::bind(&LLAccordionCtrlTab::deselectOnFocusLost, this));
     }
 
-    reshape(100, 200,FALSE);
+    reshape(100, 200,false);
 }
 
 LLAccordionCtrlTab::~LLAccordionCtrlTab()
@@ -407,11 +407,11 @@ void LLAccordionCtrlTab::setDisplayChildren(bool display)
     else
     {
         if (mScrollbar)
-            mScrollbar->setVisible(FALSE);
+            mScrollbar->setVisible(false);
     }
 }
 
-void LLAccordionCtrlTab::reshape(S32 width, S32 height, BOOL called_from_parent /* = TRUE */)
+void LLAccordionCtrlTab::reshape(S32 width, S32 height, bool called_from_parent /* = true */)
 {
     LLRect headerRect;
 
@@ -439,14 +439,14 @@ void LLAccordionCtrlTab::changeOpenClose(bool is_open)
         mExpandedHeight = getRect().getHeight();
 
     setDisplayChildren(!is_open);
-    reshape(getRect().getWidth(), getRect().getHeight(), FALSE);
+    reshape(getRect().getWidth(), getRect().getHeight(), false);
     if (mCommitSignal)
     {
         (*mCommitSignal)(this, getDisplayChildren());
     }
 }
 
-void LLAccordionCtrlTab::onVisibilityChange(BOOL new_visibility)
+void LLAccordionCtrlTab::onVisibilityChange(bool new_visibility)
 {
     LLUICtrl::onVisibilityChange(new_visibility);
 
@@ -482,7 +482,7 @@ void LLAccordionCtrlTab::onUpdateScrollToChild(const LLUICtrl *cntrl)
     LLUICtrl::onUpdateScrollToChild(cntrl);
 }
 
-BOOL LLAccordionCtrlTab::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLAccordionCtrlTab::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (mCollapsible && mHeaderVisible && mCanOpenClose)
     {
@@ -493,13 +493,13 @@ BOOL LLAccordionCtrlTab::handleMouseDown(S32 x, S32 y, MASK mask)
 
             // Reset stored state
             mWasStateStored = false;
-            return TRUE;
+            return true;
         }
     }
     return LLUICtrl::handleMouseDown(x,y,mask);
 }
 
-BOOL LLAccordionCtrlTab::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLAccordionCtrlTab::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     return LLUICtrl::handleMouseUp(x,y,mask);
 }
@@ -643,14 +643,14 @@ void LLAccordionCtrlTab::setHeaderVisible(bool value)
 
     if (mHeader)
     {
-        mHeader->setVisible(value ? TRUE : FALSE);
+        mHeader->setVisible(value);
     }
 
-    reshape(getRect().getWidth(), getRect().getHeight(), FALSE);
+    reshape(getRect().getWidth(), getRect().getHeight(), false);
 };
 
 //virtual
-BOOL LLAccordionCtrlTab::postBuild()
+bool LLAccordionCtrlTab::postBuild()
 {
     if (mHeader)
     {
@@ -812,7 +812,7 @@ S32 LLAccordionCtrlTab::notify(const LLSD& info)
     return 0;
 }
 
-BOOL LLAccordionCtrlTab::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLAccordionCtrlTab::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
     if (!mHeader->hasFocus())
         return LLUICtrl::handleKey(key, mask, called_from_parent);
@@ -820,7 +820,7 @@ BOOL LLAccordionCtrlTab::handleKey(KEY key, MASK mask, BOOL called_from_parent)
     if ((key == KEY_RETURN) && mask == MASK_NONE)
     {
         changeOpenClose(getDisplayChildren());
-        return TRUE;
+        return true;
     }
 
     if ((key == KEY_ADD || key == KEY_RIGHT) && mask == MASK_NONE)
@@ -828,7 +828,7 @@ BOOL LLAccordionCtrlTab::handleKey(KEY key, MASK mask, BOOL called_from_parent)
         if (!getDisplayChildren())
         {
             changeOpenClose(getDisplayChildren());
-            return TRUE;
+            return true;
         }
     }
 
@@ -837,7 +837,7 @@ BOOL LLAccordionCtrlTab::handleKey(KEY key, MASK mask, BOOL called_from_parent)
         if (getDisplayChildren())
         {
             changeOpenClose(getDisplayChildren());
-            return TRUE;
+            return true;
         }
     }
 
@@ -853,7 +853,7 @@ BOOL LLAccordionCtrlTab::handleKey(KEY key, MASK mask, BOOL called_from_parent)
         {
             getAccordionView()->notify(LLSD().with("action", "select_first"));
         }
-        return TRUE;
+        return true;
     }
 
     if (key == KEY_UP && mask == MASK_NONE)
@@ -862,7 +862,7 @@ BOOL LLAccordionCtrlTab::handleKey(KEY key, MASK mask, BOOL called_from_parent)
 
         // we're processing notifyParent so let call parent directly
         getParent()->notifyParent(LLSD().with("action", "select_prev"));
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleKey(key, mask, called_from_parent);
@@ -992,10 +992,10 @@ void LLAccordionCtrlTab::hideScrollbar(const LLRect& child_rect)
     if (!mContainerPanel || !mScrollbar)
         return;
 
-    if (mScrollbar->getVisible() == FALSE)
+    if (!mScrollbar->getVisible())
         return;
 
-    mScrollbar->setVisible(FALSE);
+    mScrollbar->setVisible(false);
     mScrollbar->setDocPos(0);
 
     //shrink child panel
@@ -1097,7 +1097,7 @@ void LLAccordionCtrlTab::ctrlSetLeftTopAndSize(LLView* panel, S32 left, S32 top,
     panel->setRect(panel_rect);
 }
 
-BOOL LLAccordionCtrlTab::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLAccordionCtrlTab::handleToolTip(S32 x, S32 y, MASK mask)
 {
     //header may be not the first child but we need to process it first
     if (y >= (getRect().getHeight() - HEADER_HEIGHT - HEADER_HEIGHT / 2))
@@ -1105,22 +1105,22 @@ BOOL LLAccordionCtrlTab::handleToolTip(S32 x, S32 y, MASK mask)
         //inside tab header
         //fix for EXT-6619
         mHeader->handleToolTip(x, y, mask);
-        return TRUE;
+        return true;
     }
     return LLUICtrl::handleToolTip(x, y, mask);
 }
 
-BOOL LLAccordionCtrlTab::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLAccordionCtrlTab::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if (LLUICtrl::handleScrollWheel(x, y, clicks))
     {
-        return TRUE;
+        return true;
     }
 
     if (mScrollbar && mScrollbar->getVisible() && mScrollbar->handleScrollWheel(0, 0, clicks))
     {
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
diff --git a/indra/llui/llaccordionctrltab.h b/indra/llui/llaccordionctrltab.h
index f01fff2519..cf3569683e 100644
--- a/indra/llui/llaccordionctrltab.h
+++ b/indra/llui/llaccordionctrltab.h
@@ -134,7 +134,7 @@ public:
     void canOpenClose(bool can_open_close) { mCanOpenClose = can_open_close; };
     bool canOpenClose() const { return mCanOpenClose; };
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     S32 notifyParent(const LLSD& info);
     S32 notify(const LLSD& info);
@@ -153,22 +153,22 @@ protected:
 public:
 
     // Call reshape after changing size
-    virtual void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual void reshape(S32 width, S32 height, bool called_from_parent = true);
 
     /**
      * Raises notifyParent event with "child_visibility_change" = new_visibility
      */
-    void onVisibilityChange(BOOL new_visibility);
+    void onVisibilityChange(bool new_visibility);
     virtual void onUpdateScrollToChild(const LLUICtrl * cntrl);
 
     // Changes expand/collapse state and triggers expand/collapse callbacks
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask);
 
-    virtual BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent);
+    virtual bool handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool handleKey(KEY key, MASK mask, bool called_from_parent);
 
-    virtual BOOL handleToolTip(S32 x, S32 y, MASK mask);
-    virtual BOOL handleScrollWheel( S32 x, S32 y, S32 clicks );
+    virtual bool handleToolTip(S32 x, S32 y, MASK mask);
+    virtual bool handleScrollWheel( S32 x, S32 y, S32 clicks );
 
 
     virtual bool addChild(LLView* child, S32 tab_group = 0 );
diff --git a/indra/llui/llbadge.cpp b/indra/llui/llbadge.cpp
index 847aefafb3..55fbd72165 100644
--- a/indra/llui/llbadge.cpp
+++ b/indra/llui/llbadge.cpp
@@ -36,7 +36,7 @@ static LLDefaultChildRegistry::Register<LLBadge> r("badge");
 static const S32 BADGE_OFFSET_NOT_SPECIFIED = 0x7FFFFFFF;
 
 // Compiler optimization, generate extern template
-template class LLBadge* LLView::getChild<class LLBadge>(const std::string& name, BOOL recurse) const;
+template class LLBadge* LLView::getChild<class LLBadge>(const std::string& name, bool recurse) const;
 
 
 LLBadge::Params::Params()
@@ -239,7 +239,7 @@ void LLBadge::draw()
             S32 badge_char_length = S32_MAX;
             S32 badge_pixel_length = S32_MAX;
             F32 *right_position_out = NULL;
-            BOOL do_not_use_ellipses = false;
+            bool do_not_use_ellipses = false;
 
             F32 badge_width = (2.0f * mPaddingHoriz) +
                 mGLFont->getWidthF32(badge_label_wstring.c_str(), badge_label_begin_offset, badge_char_length);
diff --git a/indra/llui/llbadge.h b/indra/llui/llbadge.h
index 59296ffe86..a6d584c6d7 100644
--- a/indra/llui/llbadge.h
+++ b/indra/llui/llbadge.h
@@ -171,7 +171,7 @@ private:
 
 // Build time optimization, generate once in .cpp file
 #ifndef LLBADGE_CPP
-extern template class LLBadge* LLView::getChild<class LLBadge>(const std::string& name, BOOL recurse) const;
+extern template class LLBadge* LLView::getChild<class LLBadge>(const std::string& name, bool recurse) const;
 #endif
 
 #endif  // LL_LLBADGE_H
diff --git a/indra/llui/llbutton.cpp b/indra/llui/llbutton.cpp
index 16b58dcc5b..e6c045250e 100644
--- a/indra/llui/llbutton.cpp
+++ b/indra/llui/llbutton.cpp
@@ -56,7 +56,7 @@ static LLDefaultChildRegistry::Register<LLButton> r("button");
 
 // Compiler optimization, generate extern template
 template class LLButton* LLView::getChild<class LLButton>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 
 // globals
 S32 LLBUTTON_H_PAD  = 4;
@@ -124,10 +124,10 @@ LLButton::LLButton(const LLButton::Params& p)
     LLBadgeOwner(getHandle()),
     mMouseDownFrame(0),
     mMouseHeldDownCount(0),
-    mBorderEnabled( FALSE ),
-    mFlashing( FALSE ),
+    mBorderEnabled( false ),
+    mFlashing( false ),
     mCurGlowStrength(0.f),
-    mNeedsHighlight(FALSE),
+    mNeedsHighlight(false),
     mUnselectedLabel(p.label()),
     mSelectedLabel(p.label_selected()),
     mGLFont(p.font),
@@ -170,7 +170,7 @@ LLButton::LLButton(const LLButton::Params& p)
     mHoverGlowStrength(p.hover_glow_amount),
     mCommitOnReturn(p.commit_on_return),
     mCommitOnCaptureLost(p.commit_on_capture_lost),
-    mFadeWhenDisabled(FALSE),
+    mFadeWhenDisabled(false),
     mForcePressedState(false),
     mDisplayPressedState(p.display_pressed_state),
     mLastDrawCharsCount(0),
@@ -223,7 +223,7 @@ LLButton::LLButton(const LLButton::Params& p)
         if (p.image_disabled() == default_params.image_disabled() )
         {
             mImageDisabled = p.image_unselected;
-            mFadeWhenDisabled = TRUE;
+            mFadeWhenDisabled = true;
         }
 
         if (p.image_pressed_selected == default_params.image_pressed_selected)
@@ -239,7 +239,7 @@ LLButton::LLButton(const LLButton::Params& p)
         if (p.image_disabled_selected() == default_params.image_disabled_selected())
         {
             mImageDisabledSelected = p.image_selected;
-            mFadeWhenDisabled = TRUE;
+            mFadeWhenDisabled = true;
         }
 
         if (p.image_pressed == default_params.image_pressed)
@@ -387,7 +387,7 @@ boost::signals2::connection LLButton::setHeldDownCallback( button_callback_t cb,
     return setHeldDownCallback(boost::bind(cb, data));
 }
 
-BOOL LLButton::postBuild()
+bool LLButton::postBuild()
 {
     autoResize();
 
@@ -396,9 +396,9 @@ BOOL LLButton::postBuild()
     return LLUICtrl::postBuild();
 }
 
-BOOL LLButton::handleUnicodeCharHere(llwchar uni_char)
+bool LLButton::handleUnicodeCharHere(llwchar uni_char)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if(' ' == uni_char
         && !gKeyboard->getKeyRepeated(' '))
     {
@@ -409,14 +409,14 @@ BOOL LLButton::handleUnicodeCharHere(llwchar uni_char)
 
         LLUICtrl::onCommit();
 
-        handled = TRUE;
+        handled = true;
     }
     return handled;
 }
 
-BOOL LLButton::handleKeyHere(KEY key, MASK mask )
+bool LLButton::handleKeyHere(KEY key, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if( mCommitOnReturn && KEY_RETURN == key && mask == MASK_NONE && !gKeyboard->getKeyRepeated(key))
     {
         if (mIsToggle)
@@ -424,7 +424,7 @@ BOOL LLButton::handleKeyHere(KEY key, MASK mask )
             toggleState();
         }
 
-        handled = TRUE;
+        handled = true;
 
         LLUICtrl::onCommit();
     }
@@ -432,7 +432,7 @@ BOOL LLButton::handleKeyHere(KEY key, MASK mask )
 }
 
 
-BOOL LLButton::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLButton::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (!childrenHandleMouseDown(x, y, mask))
     {
@@ -441,7 +441,7 @@ BOOL LLButton::handleMouseDown(S32 x, S32 y, MASK mask)
 
         if (hasTabStop() && !getIsChrome())
         {
-            setFocus(TRUE);
+            setFocus(true);
         }
 
         if (!mFunctionName.empty())
@@ -472,11 +472,11 @@ BOOL LLButton::handleMouseDown(S32 x, S32 y, MASK mask)
             make_ui_sound("UISndClick");
         }
     }
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLButton::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLButton::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     // We only handle the click if the click both started and ended within us
     if( hasMouseCapture() )
@@ -521,10 +521,10 @@ BOOL LLButton::handleMouseUp(S32 x, S32 y, MASK mask)
         childrenHandleMouseUp(x, y, mask);
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL    LLButton::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool    LLButton::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     if (mHandleRightMouse && !childrenHandleRightMouseDown(x, y, mask))
     {
@@ -533,7 +533,7 @@ BOOL    LLButton::handleRightMouseDown(S32 x, S32 y, MASK mask)
 
         if (hasTabStop() && !getIsChrome())
         {
-            setFocus(TRUE);
+            setFocus(true);
         }
 
 //      if (pointInView(x, y))
@@ -546,10 +546,10 @@ BOOL    LLButton::handleRightMouseDown(S32 x, S32 y, MASK mask)
         // if they are not mouse opaque.
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL    LLButton::handleRightMouseUp(S32 x, S32 y, MASK mask)
+bool    LLButton::handleRightMouseUp(S32 x, S32 y, MASK mask)
 {
     if (mHandleRightMouse)
     {
@@ -575,14 +575,14 @@ BOOL    LLButton::handleRightMouseUp(S32 x, S32 y, MASK mask)
         // but this might change the mouse handling of existing buttons in a bad way.
         // if they are not mouse opaque.
     }
-    return TRUE;
+    return true;
 }
 
 void LLButton::onMouseLeave(S32 x, S32 y, MASK mask)
 {
     LLUICtrl::onMouseLeave(x, y, mask);
 
-    mNeedsHighlight = FALSE;
+    mNeedsHighlight = false;
 }
 
 void LLButton::setHighlight(bool b)
@@ -590,11 +590,11 @@ void LLButton::setHighlight(bool b)
     mNeedsHighlight = b;
 }
 
-BOOL LLButton::handleHover(S32 x, S32 y, MASK mask)
+bool LLButton::handleHover(S32 x, S32 y, MASK mask)
 {
     if (isInEnabledChain()
         && (!gFocusMgr.getMouseCapture() || gFocusMgr.getMouseCapture() == this))
-        mNeedsHighlight = TRUE;
+        mNeedsHighlight = true;
 
     if (!childrenHandleHover(x, y, mask))
     {
@@ -613,7 +613,7 @@ BOOL LLButton::handleHover(S32 x, S32 y, MASK mask)
         getWindow()->setCursor(UI_CURSOR_ARROW);
         LL_DEBUGS("UserInput") << "hover handled by " << getName() << LL_ENDL;
     }
-    return TRUE;
+    return true;
 }
 
 void LLButton::getOverlayImageSize(S32& overlay_width, S32& overlay_height)
@@ -633,7 +633,7 @@ void LLButton::draw()
     static LLCachedControl<bool> sEnableButtonFlashing(*LLUI::getInstance()->mSettingGroups["config"], "EnableButtonFlashing", true);
     F32 alpha = mUseDrawContextAlpha ? getDrawContext().mAlpha : getCurrentTransparency();
 
-    bool pressed_by_keyboard = FALSE;
+    bool pressed_by_keyboard = false;
     if (hasFocus())
     {
         pressed_by_keyboard = gKeyboard->getKeyDown(' ') || (mCommitOnReturn && gKeyboard->getKeyDown(KEY_RETURN));
@@ -655,7 +655,7 @@ void LLButton::draw()
                     || mForcePressedState;
     bool selected = getToggleState();
 
-    bool use_glow_effect = FALSE;
+    bool use_glow_effect = false;
     LLColor4 highlighting_color = LLColor4::white;
     LLColor4 glow_color = LLColor4::white;
     LLRender::eBlendType glow_type = LLRender::BT_ADD_WITH_ALPHA;
@@ -687,7 +687,7 @@ void LLButton::draw()
             else
             {
                 imagep = mImageSelected;
-                use_glow_effect = TRUE;
+                use_glow_effect = true;
             }
         }
         else
@@ -699,7 +699,7 @@ void LLButton::draw()
             else
             {
                 imagep = mImageUnselected;
-                use_glow_effect = TRUE;
+                use_glow_effect = true;
             }
         }
     }
@@ -741,7 +741,7 @@ void LLButton::draw()
         if (mFlashingTimer)
         {
             LLColor4 flash_color = mFlashBgColor.get();
-            use_glow_effect = TRUE;
+            use_glow_effect = true;
             glow_type = LLRender::BT_ALPHA; // blend the glow
 
             if (mFlashingTimer->isCurrentlyHighlighted() || !mFlashingTimer->isFlashingInProgress())
@@ -762,7 +762,7 @@ void LLButton::draw()
 
     if (mNeedsHighlight && !imagep)
     {
-        use_glow_effect = TRUE;
+        use_glow_effect = true;
     }
 
     // Figure out appropriate color for the text
@@ -850,7 +850,7 @@ void LLButton::draw()
         // no image
         LL_DEBUGS() << "No image for button " << getName() << LL_ENDL;
         // draw it in pink so we can find it
-        gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, LLColor4::pink1 % alpha, FALSE);
+        gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, LLColor4::pink1 % alpha, false);
     }
 
     // let overlay image and text play well together
@@ -984,12 +984,12 @@ void LLButton::drawBorder(LLUIImage* imagep, const LLColor4& color, S32 size)
     }
 }
 
-BOOL LLButton::getToggleState() const
+bool LLButton::getToggleState() const
 {
     return getValue().asBoolean();
 }
 
-void LLButton::setToggleState(BOOL b)
+void LLButton::setToggleState(bool b)
 {
     if( b != getToggleState() )
     {
@@ -1016,7 +1016,7 @@ void LLButton::setFlashing(bool b, bool force_flashing/* = false */)
     }
 }
 
-BOOL LLButton::toggleState()
+bool LLButton::toggleState()
 {
     bool flipped = ! getToggleState();
     setToggleState(flipped);
@@ -1041,11 +1041,11 @@ void LLButton::setLabel( const LLStringExplicit& label )
 }
 
 //virtual
-BOOL LLButton::setLabelArg( const std::string& key, const LLStringExplicit& text )
+bool LLButton::setLabelArg( const std::string& key, const LLStringExplicit& text )
 {
     mUnselectedLabel.setArg(key, text);
     mSelectedLabel.setArg(key, text);
-    return TRUE;
+    return true;
 }
 
 void LLButton::setLabelUnselected( const LLStringExplicit& label )
@@ -1143,14 +1143,14 @@ void LLButton::setImageDisabled(LLPointer<LLUIImage> image)
 {
     mImageDisabled = image;
     mDisabledImageColor = mImageColor;
-    mFadeWhenDisabled = TRUE;
+    mFadeWhenDisabled = true;
 }
 
 void LLButton::setImageDisabledSelected(LLPointer<LLUIImage> image)
 {
     mImageDisabledSelected = image;
     mDisabledImageColor = mImageColor;
-    mFadeWhenDisabled = TRUE;
+    mFadeWhenDisabled = true;
 }
 
 void LLButton::setImagePressed(LLPointer<LLUIImage> image)
@@ -1243,11 +1243,11 @@ void LLButton::addImageAttributeToXML(LLXMLNodePtr node,
 {
     if( !image_name.empty() )
     {
-        node->createChild(xml_tag_name.c_str(), TRUE)->setStringValue(image_name);
+        node->createChild(xml_tag_name.c_str(), true)->setStringValue(image_name);
     }
     else if( image_id != LLUUID::null )
     {
-        node->createChild((xml_tag_name + "_id").c_str(), TRUE)->setUUIDValue(image_id);
+        node->createChild((xml_tag_name + "_id").c_str(), true)->setUUIDValue(image_id);
     }
 }
 
@@ -1314,7 +1314,7 @@ void LLButton::resetMouseDownTimer()
     mMouseDownTimer.reset();
 }
 
-BOOL LLButton::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLButton::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     // just treat a double click as a second click
     return handleMouseDown(x, y, mask);
diff --git a/indra/llui/llbutton.h b/indra/llui/llbutton.h
index 8ac42596e4..fed5cdcc50 100644
--- a/indra/llui/llbutton.h
+++ b/indra/llui/llbutton.h
@@ -156,16 +156,16 @@ public:
 
     void            addImageAttributeToXML(LLXMLNodePtr node, const std::string& imageName,
                                         const LLUUID&   imageID,const std::string&  xmlTagName) const;
-    virtual BOOL    handleUnicodeCharHere(llwchar uni_char);
-    virtual BOOL    handleKeyHere(KEY key, MASK mask);
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleRightMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleDoubleClick(S32 x, S32 y, MASK mask);
+    virtual bool    handleUnicodeCharHere(llwchar uni_char);
+    virtual bool    handleKeyHere(KEY key, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleRightMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleDoubleClick(S32 x, S32 y, MASK mask);
     virtual void    draw();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     virtual void    onMouseLeave(S32 x, S32 y, MASK mask);
     virtual void    onMouseCaptureLost();
@@ -174,8 +174,8 @@ public:
 
     void            setUnselectedLabelColor( const LLColor4& c )        { mUnselectedLabelColor = c; }
     void            setSelectedLabelColor( const LLColor4& c )          { mSelectedLabelColor = c; }
-    void            setUseEllipses( BOOL use_ellipses )                 { mUseEllipses = use_ellipses; }
-    void            setUseFontColor( BOOL use_font_color)               { mUseFontColor = use_font_color; }
+    void            setUseEllipses( bool use_ellipses )                 { mUseEllipses = use_ellipses; }
+    void            setUseFontColor( bool use_font_color)               { mUseFontColor = use_font_color; }
 
 
     boost::signals2::connection setClickedCallback(const CommitCallbackParam& cb);
@@ -200,13 +200,13 @@ public:
 
     F32             getHeldDownTime() const                             { return mMouseDownTimer.getElapsedTimeF32(); }
 
-    BOOL            toggleState();
-    BOOL            getToggleState() const;
-    void            setToggleState(BOOL b);
+    bool            toggleState();
+    bool            getToggleState() const;
+    void            setToggleState(bool b);
 
     void            setHighlight(bool b);
     void            setFlashing( bool b, bool force_flashing = false );
-    BOOL            getFlashing() const     { return mFlashing; }
+    bool            getFlashing() const     { return mFlashing; }
     LLFlashTimer*   getFlashTimer() {return mFlashingTimer;}
     void            setFlashColor(const LLUIColor &color) { mFlashBgColor = color; };
 
@@ -243,7 +243,7 @@ public:
     void            setLabel(const std::string& label);
     void            setLabel(const LLUIString& label);
     void            setLabel( const LLStringExplicit& label);
-    virtual BOOL    setLabelArg( const std::string& key, const LLStringExplicit& text );
+    virtual bool    setLabelArg( const std::string& key, const LLStringExplicit& text );
     void            setLabelUnselected(const LLStringExplicit& label);
     void            setLabelSelected(const LLStringExplicit& label);
     void            setDisabledLabelColor( const LLColor4& c )      { mDisabledLabelColor = c; }
@@ -257,12 +257,12 @@ public:
     bool            labelIsTruncated() const;
     const LLUIString&   getCurrentLabel() const;
 
-    void            setScaleImage(BOOL scale)           { mScaleImage = scale; }
-    BOOL            getScaleImage() const               { return mScaleImage; }
+    void            setScaleImage(bool scale)           { mScaleImage = scale; }
+    bool            getScaleImage() const               { return mScaleImage; }
 
-    void            setDropShadowedText(BOOL b)         { mDropShadowedText = b; }
+    void            setDropShadowedText(bool b)         { mDropShadowedText = b; }
 
-    void            setBorderEnabled(BOOL b)                    { mBorderEnabled = b; }
+    void            setBorderEnabled(bool b)                    { mBorderEnabled = b; }
 
     void            setHoverGlowStrength(F32 strength) { mHoverGlowStrength = strength; }
 
@@ -275,8 +275,8 @@ public:
     void            setImageFlash(LLPointer<LLUIImage> image);
     void            setImagePressed(LLPointer<LLUIImage> image);
 
-    void            setCommitOnReturn(BOOL commit) { mCommitOnReturn = commit; }
-    BOOL            getCommitOnReturn() const { return mCommitOnReturn; }
+    void            setCommitOnReturn(bool commit) { mCommitOnReturn = commit; }
+    bool            getCommitOnReturn() const { return mCommitOnReturn; }
 
     static void     onHeldDown(void *userdata);  // to be called by gIdleCallbacks
     static void     toggleFloaterAndSetToggleState(LLUICtrl* ctrl, const LLSD& sdname);
@@ -400,7 +400,7 @@ protected:
 // Build time optimization, generate once in .cpp file
 #ifndef LLBUTTON_CPP
 extern template class LLButton* LLView::getChild<class LLButton>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 #endif
 
 #endif  // LL_LLBUTTON_H
diff --git a/indra/llui/llchat.h b/indra/llui/llchat.h
index 56105add7e..5f75ed2f8d 100644
--- a/indra/llui/llchat.h
+++ b/indra/llui/llchat.h
@@ -83,7 +83,7 @@ public:
         mSourceType(CHAT_SOURCE_AGENT),
         mChatType(CHAT_TYPE_NORMAL),
         mAudible(CHAT_AUDIBLE_FULLY),
-        mMuted(FALSE),
+        mMuted(false),
         mTime(0.0),
         mTimeStr(),
         mPosAgent(),
@@ -100,7 +100,7 @@ public:
     EChatSourceType mSourceType;
     EChatType       mChatType;
     EChatAudible    mAudible;
-    BOOL            mMuted;     // pass muted chat to maintain list of chatters
+    bool            mMuted;     // pass muted chat to maintain list of chatters
     F64             mTime;      // viewer only, seconds from viewer start
     std::string     mTimeStr;
     LLVector3       mPosAgent;
diff --git a/indra/llui/llchatentry.cpp b/indra/llui/llchatentry.cpp
index 8a8b9e7461..da5afd0386 100644
--- a/indra/llui/llchatentry.cpp
+++ b/indra/llui/llchatentry.cpp
@@ -176,9 +176,9 @@ void LLChatEntry::onFocusLost()
     LLUICtrl::onFocusLost();
 }
 
-BOOL LLChatEntry::handleSpecialKey(const KEY key, const MASK mask)
+bool LLChatEntry::handleSpecialKey(const KEY key, const MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     LLTextEditor::handleSpecialKey(key, mask);
 
@@ -203,7 +203,7 @@ BOOL LLChatEntry::handleSpecialKey(const KEY key, const MASK mask)
             {
                 LLUI::getInstance()->reportBadKeystroke();
             }
-            handled = TRUE;
+            handled = true;
         }
         break;
 
@@ -227,7 +227,7 @@ BOOL LLChatEntry::handleSpecialKey(const KEY key, const MASK mask)
             {
                 LLUI::getInstance()->reportBadKeystroke();
             }
-            handled = TRUE;
+            handled = true;
         }
         break;
 
diff --git a/indra/llui/llchatentry.h b/indra/llui/llchatentry.h
index f7473b320d..5621ede1e7 100644
--- a/indra/llui/llchatentry.h
+++ b/indra/llui/llchatentry.h
@@ -84,7 +84,7 @@ private:
      */
     void    updateHistory();
 
-    BOOL    handleSpecialKey(const KEY key, const MASK mask);
+    bool    handleSpecialKey(const KEY key, const MASK mask);
 
 
     // Fired when text height expanded to mExpandLinesCount
diff --git a/indra/llui/llcheckboxctrl.cpp b/indra/llui/llcheckboxctrl.cpp
index 8ba37a8075..3bcf0a6517 100644
--- a/indra/llui/llcheckboxctrl.cpp
+++ b/indra/llui/llcheckboxctrl.cpp
@@ -45,7 +45,7 @@ static LLDefaultChildRegistry::Register<LLCheckBoxCtrl> r("check_box");
 
 // Compiler optimization, generate extern template
 template class LLCheckBoxCtrl* LLView::getChild<class LLCheckBoxCtrl>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 
 void LLCheckBoxCtrl::WordWrap::declareValues()
 {
@@ -77,7 +77,7 @@ LLCheckBoxCtrl::LLCheckBoxCtrl(const LLCheckBoxCtrl::Params& p)
     static LLUICachedControl<S32> llcheckboxctrl_vpad ("UICheckboxctrlVPad", 0);
 
     // must be big enough to hold all children
-    setUseBoundingRect(TRUE);
+    setUseBoundingRect(true);
 
     // *HACK Get rid of this with SL-55508...
     // this allows blank check boxes and radio boxes for now
@@ -160,13 +160,13 @@ void LLCheckBoxCtrl::onCommit()
 {
     if( getEnabled() )
     {
-        setTentative(FALSE);
+        setTentative(false);
         setControlValue(getValue());
         LLUICtrl::onCommit();
     }
 }
 
-void LLCheckBoxCtrl::setEnabled(BOOL b)
+void LLCheckBoxCtrl::setEnabled(bool b)
 {
     LLView::setEnabled(b);
 
@@ -182,10 +182,10 @@ void LLCheckBoxCtrl::setEnabled(BOOL b)
 
 void LLCheckBoxCtrl::clear()
 {
-    setValue( FALSE );
+    setValue( false );
 }
 
-void LLCheckBoxCtrl::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLCheckBoxCtrl::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLRect rect = getRect();
     S32 delta_width = width - rect.getWidth();
@@ -205,10 +205,10 @@ void LLCheckBoxCtrl::reshape(S32 width, S32 height, BOOL called_from_parent)
 
     LLRect label_rect = mLabel->getRect();
     S32 new_width = rect.getWidth() - label_rect.mLeft;
-    mLabel->reshape(new_width, label_rect.getHeight(), TRUE);
+    mLabel->reshape(new_width, label_rect.getHeight(), true);
 
     S32 label_top = label_rect.mTop;
-    mLabel->reshapeToFitText(TRUE);
+    mLabel->reshapeToFitText(true);
 
     label_rect = mLabel->getRect();
     if (label_top != label_rect.mTop && mWordWrap == WRAP_DOWN)
@@ -247,13 +247,13 @@ LLSD LLCheckBoxCtrl::getValue() const
 }
 
 //virtual
-void LLCheckBoxCtrl::setTentative(BOOL b)
+void LLCheckBoxCtrl::setTentative(bool b)
 {
     mButton->setTentative(b);
 }
 
 //virtual
-BOOL LLCheckBoxCtrl::getTentative() const
+bool LLCheckBoxCtrl::getTentative() const
 {
     return mButton->getTentative();
 }
@@ -261,7 +261,7 @@ BOOL LLCheckBoxCtrl::getTentative() const
 void LLCheckBoxCtrl::setLabel( const LLStringExplicit& label )
 {
     mLabel->setText( label );
-    reshape(getRect().getWidth(), getRect().getHeight(), FALSE);
+    reshape(getRect().getWidth(), getRect().getHeight(), false);
 }
 
 std::string LLCheckBoxCtrl::getLabel() const
@@ -269,10 +269,10 @@ std::string LLCheckBoxCtrl::getLabel() const
     return mLabel->getText();
 }
 
-BOOL LLCheckBoxCtrl::setLabelArg( const std::string& key, const LLStringExplicit& text )
+bool LLCheckBoxCtrl::setLabelArg( const std::string& key, const LLStringExplicit& text )
 {
-    BOOL res = mLabel->setTextArg(key, text);
-    reshape(getRect().getWidth(), getRect().getHeight(), FALSE);
+    bool res = mLabel->setTextArg(key, text);
+    reshape(getRect().getWidth(), getRect().getHeight(), false);
     return res;
 }
 
@@ -283,14 +283,14 @@ void LLCheckBoxCtrl::setControlName(const std::string& control_name, LLView* con
 }
 
 
-// virtual      Returns TRUE if the user has modified this control.
-BOOL     LLCheckBoxCtrl::isDirty() const
+// virtual      Returns true if the user has modified this control.
+bool     LLCheckBoxCtrl::isDirty() const
 {
     if ( mButton )
     {
         return mButton->isDirty();
     }
-    return FALSE;       // Shouldn't get here
+    return false;       // Shouldn't get here
 }
 
 
diff --git a/indra/llui/llcheckboxctrl.h b/indra/llui/llcheckboxctrl.h
index f2b61db308..3058e946c3 100644
--- a/indra/llui/llcheckboxctrl.h
+++ b/indra/llui/llcheckboxctrl.h
@@ -36,8 +36,8 @@
 // Constants
 //
 
-const BOOL  RADIO_STYLE = TRUE;
-const BOOL  CHECK_STYLE = FALSE;
+const bool  RADIO_STYLE = true;
+const bool  CHECK_STYLE = false;
 
 //
 // Classes
@@ -87,28 +87,28 @@ protected:
 public:
     // LLView interface
 
-    virtual void        setEnabled( BOOL b );
+    virtual void        setEnabled( bool b );
 
-    virtual void        reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual void        reshape(S32 width, S32 height, bool called_from_parent = true);
 
     // LLUICtrl interface
     virtual void        setValue(const LLSD& value );
     virtual LLSD        getValue() const;
-            BOOL        get() { return (BOOL)getValue().asBoolean(); }
-            void        set(BOOL value) { setValue(value); }
+            bool        get() { return (bool)getValue().asBoolean(); }
+            void        set(bool value) { setValue(value); }
 
-    virtual void        setTentative(BOOL b);
-    virtual BOOL        getTentative() const;
+    virtual void        setTentative(bool b);
+    virtual bool        getTentative() const;
 
-    virtual BOOL        setLabelArg( const std::string& key, const LLStringExplicit& text );
+    virtual bool        setLabelArg( const std::string& key, const LLStringExplicit& text );
 
     virtual void        clear();
     virtual void        onCommit();
 
     // LLCheckBoxCtrl interface
-    virtual BOOL        toggle()                { return mButton->toggleState(); }      // returns new state
+    virtual bool        toggle()                { return mButton->toggleState(); }      // returns new state
 
-    void                setBtnFocus() { mButton->setFocus(TRUE); }
+    void                setBtnFocus() { mButton->setFocus(true); }
 
     void                setEnabledColor( const LLColor4 &color ) { mTextEnabledColor = color; }
     void                setDisabledColor( const LLColor4 &color ) { mTextDisabledColor = color; }
@@ -121,7 +121,7 @@ public:
 
     virtual void        setControlName(const std::string& control_name, LLView* context);
 
-    virtual BOOL        isDirty()   const;      // Returns TRUE if the user has modified this control.
+    virtual bool        isDirty()   const;      // Returns true if the user has modified this control.
     virtual void        resetDirty();           // Clear dirty state
 
 protected:
@@ -151,7 +151,7 @@ protected:
 // Build time optimization, generate once in .cpp file
 #ifndef LLCHECKBOXCTRL_CPP
 extern template class LLCheckBoxCtrl* LLView::getChild<class LLCheckBoxCtrl>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 #endif
 
 #endif  // LL_LLCHECKBOXCTRL_H
diff --git a/indra/llui/llclipboard.cpp b/indra/llui/llclipboard.cpp
index 5132d33bbf..64896ccfcb 100644
--- a/indra/llui/llclipboard.cpp
+++ b/indra/llui/llclipboard.cpp
@@ -73,7 +73,7 @@ bool LLClipboard::addToClipboard(const LLUUID& src, const LLAssetType::EType typ
         if (LLAssetType::lookupIsAssetIDKnowable(type))
         {
             LLWString source = utf8str_to_wstring(src.asString());
-            res = addToClipboard(source, 0, source.size());
+            res = addToClipboard(source, 0, static_cast<S32>(source.size()));
         }
         if (res)
         {
@@ -87,13 +87,13 @@ bool LLClipboard::addToClipboard(const LLUUID& src, const LLAssetType::EType typ
 bool LLClipboard::pasteFromClipboard(std::vector<LLUUID>& inv_objects) const
 {
     bool res = false;
-    S32 count = mObjects.size();
+    auto count = mObjects.size();
     inv_objects.reserve(inv_objects.size() + count);
     if (count > 0)
     {
         res = true;
         inv_objects.clear();
-        for (S32 i = 0; i < count; i++)
+        for (size_t i = 0; i < count; i++)
         {
             inv_objects.push_back(mObjects[i]);
         }
diff --git a/indra/llui/llcombobox.cpp b/indra/llui/llcombobox.cpp
index 71dd93d07d..79dce1c714 100644
--- a/indra/llui/llcombobox.cpp
+++ b/indra/llui/llcombobox.cpp
@@ -171,13 +171,13 @@ void LLComboBox::initFromParams(const LLComboBox::Params& p)
 }
 
 // virtual
-BOOL LLComboBox::postBuild()
+bool LLComboBox::postBuild()
 {
     if (mControlVariable)
     {
         setValue(mControlVariable->getValue()); // selects the appropriate item
     }
-    return TRUE;
+    return true;
 }
 
 
@@ -212,16 +212,16 @@ void LLComboBox::onCommit()
         // we have selected an existing item, blitz the manual text entry with
         // the properly capitalized item
         mTextEntry->setValue(getSimple());
-        mTextEntry->setTentative(FALSE);
+        mTextEntry->setTentative(false);
     }
     setControlValue(getValue());
     LLUICtrl::onCommit();
 }
 
 // virtual
-BOOL LLComboBox::isDirty() const
+bool LLComboBox::isDirty() const
 {
-    BOOL grubby = FALSE;
+    bool grubby = false;
     if ( mList )
     {
         grubby = mList->isDirty();
@@ -244,7 +244,7 @@ bool LLComboBox::itemExists(const std::string& name)
 }
 
 // add item "name" to menu
-LLScrollListItem* LLComboBox::add(const std::string& name, EAddPosition pos, BOOL enabled)
+LLScrollListItem* LLComboBox::add(const std::string& name, EAddPosition pos, bool enabled)
 {
     LLScrollListItem* item = mList->addSimpleElement(name, pos);
     item->setEnabled(enabled);
@@ -263,7 +263,7 @@ LLScrollListItem* LLComboBox::add(const std::string& name, EAddPosition pos, BOO
 }
 
 // add item "name" with a unique id to menu
-LLScrollListItem* LLComboBox::add(const std::string& name, const LLUUID& id, EAddPosition pos, BOOL enabled )
+LLScrollListItem* LLComboBox::add(const std::string& name, const LLUUID& id, EAddPosition pos, bool enabled )
 {
     LLScrollListItem* item = mList->addSimpleElement(name, pos, id);
     item->setEnabled(enabled);
@@ -282,7 +282,7 @@ LLScrollListItem* LLComboBox::add(const std::string& name, const LLUUID& id, EAd
 }
 
 // add item "name" with attached userdata
-LLScrollListItem* LLComboBox::add(const std::string& name, void* userdata, EAddPosition pos, BOOL enabled )
+LLScrollListItem* LLComboBox::add(const std::string& name, void* userdata, EAddPosition pos, bool enabled )
 {
     LLScrollListItem* item = mList->addSimpleElement(name, pos);
     item->setEnabled(enabled);
@@ -302,7 +302,7 @@ LLScrollListItem* LLComboBox::add(const std::string& name, void* userdata, EAddP
 }
 
 // add item "name" with attached generic data
-LLScrollListItem* LLComboBox::add(const std::string& name, LLSD value, EAddPosition pos, BOOL enabled )
+LLScrollListItem* LLComboBox::add(const std::string& name, LLSD value, EAddPosition pos, bool enabled )
 {
     LLScrollListItem* item = mList->addSimpleElement(name, pos, value);
     item->setEnabled(enabled);
@@ -325,17 +325,17 @@ LLScrollListItem* LLComboBox::addSeparator(EAddPosition pos)
     return mList->addSeparator(pos);
 }
 
-void LLComboBox::sortByName(BOOL ascending)
+void LLComboBox::sortByName(bool ascending)
 {
     mList->sortOnce(0, ascending);
 }
 
 
 // Choose an item with a given name in the menu.
-// Returns TRUE if the item was found.
-BOOL LLComboBox::setSimple(const LLStringExplicit& name)
+// Returns true if the item was found.
+bool LLComboBox::setSimple(const LLStringExplicit& name)
 {
-    BOOL found = mList->selectItemByLabel(name, FALSE);
+    bool found = mList->selectItemByLabel(name, false);
 
     if (found)
     {
@@ -349,7 +349,7 @@ BOOL LLComboBox::setSimple(const LLStringExplicit& name)
 // virtual
 void LLComboBox::setValue(const LLSD& value)
 {
-    BOOL found = mList->selectByValue(value);
+    bool found = mList->selectByValue(value);
     if (found)
     {
         LLScrollListItem* item = mList->getFirstSelected();
@@ -406,9 +406,9 @@ void LLComboBox::setLabel(const LLStringExplicit& name)
     if ( mTextEntry )
     {
         mTextEntry->setText(name);
-        if (mList->selectItemByLabel(name, FALSE))
+        if (mList->selectItemByLabel(name, false))
         {
-            mTextEntry->setTentative(FALSE);
+            mTextEntry->setTentative(false);
             mLastSelectedIndex = mList->getFirstSelectedIndex();
         }
         else
@@ -430,7 +430,7 @@ void LLComboBox::updateLabel()
     if (mTextEntry)
     {
         mTextEntry->setText(getSelectedItemLabel());
-        mTextEntry->setTentative(FALSE);
+        mTextEntry->setTentative(false);
     }
 
     // If combo box doesn't allow text entry update
@@ -441,9 +441,9 @@ void LLComboBox::updateLabel()
     }
 }
 
-BOOL LLComboBox::remove(const std::string& name)
+bool LLComboBox::remove(const std::string& name)
 {
-    BOOL found = mList->selectItemByLabel(name);
+    bool found = mList->selectItemByLabel(name);
 
     if (found)
     {
@@ -458,15 +458,15 @@ BOOL LLComboBox::remove(const std::string& name)
     return found;
 }
 
-BOOL LLComboBox::remove(S32 index)
+bool LLComboBox::remove(S32 index)
 {
     if (index < mList->getItemCount())
     {
         mList->deleteSingleItem(index);
         setLabel(getSelectedItemLabel());
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 // Keyboard focus lost.
@@ -482,7 +482,7 @@ void LLComboBox::onFocusLost()
     LLUICtrl::onFocusLost();
 }
 
-void LLComboBox::setButtonVisible(BOOL visible)
+void LLComboBox::setButtonVisible(bool visible)
 {
     mButton->setVisible(visible);
     if (mTextEntry)
@@ -494,13 +494,13 @@ void LLComboBox::setButtonVisible(BOOL visible)
             text_entry_rect.mRight -= llmax(8,arrow_width) + 2 * BTN_DROP_SHADOW;
         }
         //mTextEntry->setRect(text_entry_rect);
-        mTextEntry->reshape(text_entry_rect.getWidth(), text_entry_rect.getHeight(), TRUE);
+        mTextEntry->reshape(text_entry_rect.getWidth(), text_entry_rect.getHeight(), true);
     }
 }
 
-BOOL LLComboBox::setCurrentByIndex( S32 index )
+bool LLComboBox::setCurrentByIndex( S32 index )
 {
-    BOOL found = mList->selectNthItem( index );
+    bool found = mList->selectNthItem( index );
     if (found)
     {
         setLabel(getSelectedItemLabel());
@@ -519,7 +519,7 @@ S32 LLComboBox::getCurrentIndex() const
     return -1;
 }
 
-void LLComboBox::setEnabledByValue(const LLSD& value, BOOL enabled)
+void LLComboBox::setEnabledByValue(const LLSD& value, bool enabled)
 {
     LLScrollListItem *found = mList->getItem(value);
     if (found)
@@ -537,7 +537,7 @@ void LLComboBox::createLineEditor(const LLComboBox::Params& p)
         S32 shadow_size = BTN_DROP_SHADOW;
         mButton->setRect(LLRect( getRect().getWidth() - llmax(8,arrow_width) - 2 * shadow_size,
                                 rect.mTop, rect.mRight, rect.mBottom));
-        mButton->setTabStop(FALSE);
+        mButton->setTabStop(false);
         mButton->setHAlign(LLFontGL::HCENTER);
 
         LLRect text_entry_rect(0, getRect().getHeight(), getRect().getWidth(), 0);
@@ -555,7 +555,7 @@ void LLComboBox::createLineEditor(const LLComboBox::Params& p)
         params.label(mLabel);
         mTextEntry = LLUICtrlFactory::create<LLLineEditor> (params);
         mTextEntry->setText(cur_label);
-        mTextEntry->setIgnoreTab(TRUE);
+        mTextEntry->setIgnoreTab(true);
         addChild(mTextEntry);
 
         // clear label on button
@@ -570,7 +570,7 @@ void LLComboBox::createLineEditor(const LLComboBox::Params& p)
 
         if (mTextEntry)
         {
-            mTextEntry->setVisible(FALSE);
+            mTextEntry->setVisible(false);
         }
     }
 }
@@ -674,15 +674,15 @@ void LLComboBox::showList()
     // NB: this call will trigger the focuslost callback which will hide the list, so do it first
     // before finally showing the list
 
-    mList->setFocus(TRUE);
+    mList->setFocus(true);
 
     // Show the list and push the button down
-    mButton->setToggleState(TRUE);
-    mList->setVisible(TRUE);
+    mButton->setToggleState(true);
+    mList->setVisible(true);
 
     LLUI::getInstance()->addPopup(this);
 
-    setUseBoundingRect(TRUE);
+    setUseBoundingRect(true);
 //  updateBoundingRect();
 }
 
@@ -701,11 +701,11 @@ void LLComboBox::hideList()
         else if(mLastSelectedIndex >= 0)
             mList->selectNthItem(mLastSelectedIndex);
 
-        mButton->setToggleState(FALSE);
-        mList->setVisible(FALSE);
+        mButton->setToggleState(false);
+        mList->setVisible(false);
         mList->mouseOverHighlightNthItem(-1);
 
-        setUseBoundingRect(FALSE);
+        setUseBoundingRect(false);
         LLUI::getInstance()->removePopup(this);
 //      updateBoundingRect();
     }
@@ -731,7 +731,7 @@ void LLComboBox::onButtonMouseDown()
             showList();
         }
 
-        setFocus( TRUE );
+        setFocus( true );
 
         // pass mouse capture on to list if button is depressed
         if (mButton->hasMouseCapture())
@@ -781,13 +781,13 @@ void LLComboBox::onItemSelected(const LLSD& data)
     onCommit();
 }
 
-BOOL LLComboBox::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLComboBox::handleToolTip(S32 x, S32 y, MASK mask)
 {
     std::string tool_tip;
 
     if(LLUICtrl::handleToolTip(x, y, mask))
     {
-        return TRUE;
+        return true;
     }
 
     tool_tip = getToolTip();
@@ -802,19 +802,19 @@ BOOL LLComboBox::handleToolTip(S32 x, S32 y, MASK mask)
             .message(tool_tip)
             .sticky_rect(calcScreenRect()));
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLComboBox::handleKeyHere(KEY key, MASK mask)
+bool LLComboBox::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL result = FALSE;
+    bool result = false;
     if (hasFocus())
     {
         if (mList->getVisible()
             && key == KEY_ESCAPE && mask == MASK_NONE)
         {
             hideList();
-            return TRUE;
+            return true;
         }
         //give list a chance to pop up and handle key
         LLScrollListItem* last_selected_item = mList->getLastSelectedItem();
@@ -837,7 +837,7 @@ BOOL LLComboBox::handleKeyHere(KEY key, MASK mask)
             // don't show list and don't eat key input when committing
             // free-form text entry with RETURN since user already knows
             // what they are trying to select
-            return FALSE;
+            return false;
         }
         // if selection has changed, pop open list
         else if (mList->getLastSelectedItem() != last_selected_item
@@ -851,9 +851,9 @@ BOOL LLComboBox::handleKeyHere(KEY key, MASK mask)
     return result;
 }
 
-BOOL LLComboBox::handleUnicodeCharHere(llwchar uni_char)
+bool LLComboBox::handleUnicodeCharHere(llwchar uni_char)
 {
-    BOOL result = FALSE;
+    bool result = false;
     if (gFocusMgr.childHasKeyboardFocus(this))
     {
         // space bar just shows the list
@@ -880,12 +880,12 @@ void LLComboBox::setTextEntry(const LLStringExplicit& text)
     if (mTextEntry)
     {
         mTextEntry->setText(text);
-        mHasAutocompletedText = FALSE;
+        mHasAutocompletedText = false;
         updateSelection();
     }
 }
 
-void LLComboBox::setKeystrokeOnEsc(BOOL enable)
+void LLComboBox::setKeystrokeOnEsc(bool enable)
 {
     if (mTextEntry)
     {
@@ -904,9 +904,9 @@ void LLComboBox::onTextEntry(LLLineEditor* line_editor)
     if (key == KEY_BACKSPACE ||
         key == KEY_DELETE)
     {
-        if (mList->selectItemByLabel(line_editor->getText(), FALSE))
+        if (mList->selectItemByLabel(line_editor->getText(), false))
         {
-            line_editor->setTentative(FALSE);
+            line_editor->setTentative(false);
             mLastSelectedIndex = mList->getFirstSelectedIndex();
         }
         else
@@ -941,7 +941,7 @@ void LLComboBox::onTextEntry(LLLineEditor* line_editor)
             }
         }
         line_editor->selectAll();
-        line_editor->setTentative(FALSE);
+        line_editor->setTentative(false);
     }
     else if (key == KEY_UP)
     {
@@ -956,7 +956,7 @@ void LLComboBox::onTextEntry(LLLineEditor* line_editor)
             }
         }
         line_editor->selectAll();
-        line_editor->setTentative(FALSE);
+        line_editor->setTentative(false);
     }
     else
     {
@@ -985,20 +985,20 @@ void LLComboBox::updateSelection()
         prearrangeList(mTextEntry->getText());
     }
 
-    if (mList->selectItemByLabel(full_string, FALSE))
+    if (mList->selectItemByLabel(full_string, false))
     {
-        mTextEntry->setTentative(FALSE);
+        mTextEntry->setTentative(false);
         mLastSelectedIndex = mList->getFirstSelectedIndex();
     }
-    else if (mList->selectItemByPrefix(left_wstring, FALSE))
+    else if (mList->selectItemByPrefix(left_wstring, false))
     {
         LLWString selected_item = utf8str_to_wstring(getSelectedItemLabel());
         LLWString wtext = left_wstring + selected_item.substr(left_wstring.size(), selected_item.size());
         mTextEntry->setText(wstring_to_utf8str(wtext));
-        mTextEntry->setSelection(left_wstring.size(), mTextEntry->getWText().size());
+        mTextEntry->setSelection(static_cast<S32>(left_wstring.size()), static_cast<S32>(mTextEntry->getWText().size()));
         mTextEntry->endSelection();
-        mTextEntry->setTentative(FALSE);
-        mHasAutocompletedText = TRUE;
+        mTextEntry->setTentative(false);
+        mHasAutocompletedText = true;
         mLastSelectedIndex = mList->getFirstSelectedIndex();
     }
     else // no matching items found
@@ -1006,7 +1006,7 @@ void LLComboBox::updateSelection()
         mList->deselectAllItems();
         mTextEntry->setText(wstring_to_utf8str(user_wstring)); // removes text added by autocompletion
         mTextEntry->setTentative(mTextEntryTentative);
-        mHasAutocompletedText = FALSE;
+        mHasAutocompletedText = false;
         mLastSelectedIndex = -1;
     }
 }
@@ -1019,7 +1019,7 @@ void LLComboBox::onTextCommit(const LLSD& data)
     mTextEntry->selectAll();
 }
 
-void LLComboBox::setFocus(BOOL b)
+void LLComboBox::setFocus(bool b)
 {
     LLUICtrl::setFocus(b);
 
@@ -1028,7 +1028,7 @@ void LLComboBox::setFocus(BOOL b)
         mList->clearSearchString();
         if (mList->getVisible())
         {
-            mList->setFocus(TRUE);
+            mList->setFocus(true);
         }
     }
 }
@@ -1094,7 +1094,7 @@ void LLComboBox::imageLoaded()
             {
                 LLRect text_entry_rect(0, getRect().getHeight(), getRect().getWidth(), 0);
                 text_entry_rect.mRight -= llmax(8, arrow_width) + 2 * BTN_DROP_SHADOW;
-                mTextEntry->reshape(text_entry_rect.getWidth(), text_entry_rect.getHeight(), TRUE);
+                mTextEntry->reshape(text_entry_rect.getWidth(), text_entry_rect.getHeight(), true);
             }
         }
     }
@@ -1139,7 +1139,7 @@ void LLComboBox::clearRows()
     mList->clearRows();
 }
 
-void LLComboBox::sortByColumn(const std::string& name, BOOL ascending)
+void LLComboBox::sortByColumn(const std::string& name, bool ascending)
 {
     mList->sortByColumn(name, ascending);
 }
@@ -1147,9 +1147,9 @@ void LLComboBox::sortByColumn(const std::string& name, BOOL ascending)
 //============================================================================
 //LLCtrlSelectionInterface functions
 
-BOOL LLComboBox::setCurrentByID(const LLUUID& id)
+bool LLComboBox::setCurrentByID(const LLUUID& id)
 {
-    BOOL found = mList->selectByID( id );
+    bool found = mList->selectByID( id );
 
     if (found)
     {
@@ -1164,9 +1164,9 @@ LLUUID LLComboBox::getCurrentID() const
 {
     return mList->getStringUUIDSelectedItem();
 }
-BOOL LLComboBox::setSelectedByValue(const LLSD& value, BOOL selected)
+bool LLComboBox::setSelectedByValue(const LLSD& value, bool selected)
 {
-    BOOL found = mList->setSelectedByValue(value, selected);
+    bool found = mList->setSelectedByValue(value, selected);
     if (found)
     {
         setLabel(getSelectedItemLabel());
@@ -1179,32 +1179,32 @@ LLSD LLComboBox::getSelectedValue()
     return mList->getSelectedValue();
 }
 
-BOOL LLComboBox::isSelected(const LLSD& value) const
+bool LLComboBox::isSelected(const LLSD& value) const
 {
     return mList->isSelected(value);
 }
 
-BOOL LLComboBox::operateOnSelection(EOperation op)
+bool LLComboBox::operateOnSelection(EOperation op)
 {
     if (op == OP_DELETE)
     {
         mList->deleteSelectedItems();
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLComboBox::operateOnAll(EOperation op)
+bool LLComboBox::operateOnAll(EOperation op)
 {
     if (op == OP_DELETE)
     {
         clearRows();
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLComboBox::selectItemRange( S32 first, S32 last )
+bool LLComboBox::selectItemRange( S32 first, S32 last )
 {
     return mList->selectItemRange(first, last);
 }
diff --git a/indra/llui/llcombobox.h b/indra/llui/llcombobox.h
index 93382a1022..cc1c2885fc 100644
--- a/indra/llui/llcombobox.h
+++ b/indra/llui/llcombobox.h
@@ -94,7 +94,7 @@ public:
 
 
     virtual ~LLComboBox();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
 protected:
     friend class LLUICtrlFactory;
@@ -111,18 +111,18 @@ public:
     // LLView interface
     virtual void    onFocusLost();
 
-    virtual BOOL    handleToolTip(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleKeyHere(KEY key, MASK mask);
-    virtual BOOL    handleUnicodeCharHere(llwchar uni_char);
+    virtual bool    handleToolTip(S32 x, S32 y, MASK mask);
+    virtual bool    handleKeyHere(KEY key, MASK mask);
+    virtual bool    handleUnicodeCharHere(llwchar uni_char);
 
     // LLUICtrl interface
     virtual void    clear();                    // select nothing
     virtual void    onCommit();
-    virtual BOOL    acceptsTextInput() const        { return mAllowTextEntry; }
-    virtual BOOL    isDirty() const;            // Returns TRUE if the user has modified this control.
+    virtual bool    acceptsTextInput() const        { return mAllowTextEntry; }
+    virtual bool    isDirty() const;            // Returns true if the user has modified this control.
     virtual void    resetDirty();               // Clear dirty state
 
-    virtual void    setFocus(BOOL b);
+    virtual void    setFocus(bool b);
 
     // Selects item by underlying LLSD value, using LLSD::asString() matching.
     // For simple items, this is just the name of the label.
@@ -133,21 +133,21 @@ public:
     virtual LLSD    getValue() const;
 
     void            setTextEntry(const LLStringExplicit& text);
-    void            setKeystrokeOnEsc(BOOL enable);
+    void            setKeystrokeOnEsc(bool enable);
 
-    LLScrollListItem*   add(const std::string& name, EAddPosition pos = ADD_BOTTOM, BOOL enabled = TRUE);   // add item "name" to menu
-    LLScrollListItem*   add(const std::string& name, const LLUUID& id, EAddPosition pos = ADD_BOTTOM, BOOL enabled = TRUE);
-    LLScrollListItem*   add(const std::string& name, void* userdata, EAddPosition pos = ADD_BOTTOM, BOOL enabled = TRUE);
-    LLScrollListItem*   add(const std::string& name, LLSD value, EAddPosition pos = ADD_BOTTOM, BOOL enabled = TRUE);
+    LLScrollListItem*   add(const std::string& name, EAddPosition pos = ADD_BOTTOM, bool enabled = true);   // add item "name" to menu
+    LLScrollListItem*   add(const std::string& name, const LLUUID& id, EAddPosition pos = ADD_BOTTOM, bool enabled = true);
+    LLScrollListItem*   add(const std::string& name, void* userdata, EAddPosition pos = ADD_BOTTOM, bool enabled = true);
+    LLScrollListItem*   add(const std::string& name, LLSD value, EAddPosition pos = ADD_BOTTOM, bool enabled = true);
     LLScrollListItem*   addSeparator(EAddPosition pos = ADD_BOTTOM);
-    BOOL            remove( S32 index );    // remove item by index, return TRUE if found and removed
+    bool            remove( S32 index );    // remove item by index, return true if found and removed
     void            removeall() { clearRows(); }
     bool            itemExists(const std::string& name);
 
-    void            sortByName(BOOL ascending = TRUE); // Sort the entries in the combobox by name
+    void            sortByName(bool ascending = true); // Sort the entries in the combobox by name
 
-    // Select current item by name using selectItemByLabel.  Returns FALSE if not found.
-    BOOL            setSimple(const LLStringExplicit& name);
+    // Select current item by name using selectItemByLabel.  Returns false if not found.
+    bool            setSimple(const LLStringExplicit& name);
     // Get name of current item. Returns an empty string if not found.
     const std::string   getSimple() const;
     // Get contents of column x of selected row
@@ -160,12 +160,12 @@ public:
     // Updates the combobox label to match the selected list item.
     void            updateLabel();
 
-    BOOL            remove(const std::string& name);    // remove item "name", return TRUE if found and removed
+    bool            remove(const std::string& name);    // remove item "name", return true if found and removed
 
-    BOOL            setCurrentByIndex( S32 index );
+    bool            setCurrentByIndex( S32 index );
     S32             getCurrentIndex() const;
 
-    void            setEnabledByValue(const LLSD& value, BOOL enabled);
+    void            setEnabledByValue(const LLSD& value, bool enabled);
 
     void            createLineEditor(const Params&);
 
@@ -183,21 +183,21 @@ public:
     virtual LLScrollListItem* addElement(const LLSD& value, EAddPosition pos = ADD_BOTTOM, void* userdata = NULL);
     virtual LLScrollListItem* addSimpleElement(const std::string& value, EAddPosition pos = ADD_BOTTOM, const LLSD& id = LLSD());
     virtual void    clearRows();
-    virtual void    sortByColumn(const std::string& name, BOOL ascending);
+    virtual void    sortByColumn(const std::string& name, bool ascending);
 
     // LLCtrlSelectionInterface functions
-    virtual BOOL    getCanSelect() const                { return TRUE; }
-    virtual BOOL    selectFirstItem()                   { return setCurrentByIndex(0); }
-    virtual BOOL    selectNthItem( S32 index )          { return setCurrentByIndex(index); }
-    virtual BOOL    selectItemRange( S32 first, S32 last );
+    virtual bool    getCanSelect() const                { return true; }
+    virtual bool    selectFirstItem()                   { return setCurrentByIndex(0); }
+    virtual bool    selectNthItem( S32 index )          { return setCurrentByIndex(index); }
+    virtual bool    selectItemRange( S32 first, S32 last );
     virtual S32     getFirstSelectedIndex() const       { return getCurrentIndex(); }
-    virtual BOOL    setCurrentByID( const LLUUID& id );
+    virtual bool    setCurrentByID( const LLUUID& id );
     virtual LLUUID  getCurrentID() const;               // LLUUID::null if no items in menu
-    virtual BOOL    setSelectedByValue(const LLSD& value, BOOL selected);
+    virtual bool    setSelectedByValue(const LLSD& value, bool selected);
     virtual LLSD    getSelectedValue();
-    virtual BOOL    isSelected(const LLSD& value) const;
-    virtual BOOL    operateOnSelection(EOperation op);
-    virtual BOOL    operateOnAll(EOperation op);
+    virtual bool    isSelected(const LLSD& value) const;
+    virtual bool    operateOnSelection(EOperation op);
+    virtual bool    operateOnAll(EOperation op);
 
     //========================================================================
 
@@ -214,7 +214,7 @@ public:
     */
     boost::signals2::connection setReturnCallback( const commit_signal_t::slot_type& cb ) { return mOnReturnSignal.connect(cb); }
 
-    void            setButtonVisible(BOOL visible);
+    void            setButtonVisible(bool visible);
 
     void            onButtonMouseDown();
     void            onListMouseUp();
@@ -234,13 +234,13 @@ protected:
     EPreferredPosition  mListPosition;
     LLPointer<LLUIImage>    mArrowImage;
     LLUIString          mLabel;
-    BOOL                mHasAutocompletedText;
+    bool                mHasAutocompletedText;
 
 private:
-    BOOL                mAllowTextEntry;
-    BOOL                mAllowNewValues;
+    bool                mAllowTextEntry;
+    bool                mAllowNewValues;
     S32                 mMaxChars;
-    BOOL                mTextEntryTentative;
+    bool                mTextEntryTentative;
     commit_callback_t   mPrearrangeCallback;
     commit_callback_t   mTextEntryCallback;
     commit_callback_t   mTextChangedCallback;
diff --git a/indra/llui/llcommandmanager.cpp b/indra/llui/llcommandmanager.cpp
index 270ec86e01..03717da80b 100644
--- a/indra/llui/llcommandmanager.cpp
+++ b/indra/llui/llcommandmanager.cpp
@@ -107,7 +107,7 @@ LLCommandManager::~LLCommandManager()
 
 U32 LLCommandManager::commandCount() const
 {
-    return mCommands.size();
+    return static_cast<U32>(mCommands.size());
 }
 
 LLCommand * LLCommandManager::getCommand(U32 commandIndex)
diff --git a/indra/llui/llcommandmanager.h b/indra/llui/llcommandmanager.h
index 3b2586a5a1..e6df0d3a4b 100644
--- a/indra/llui/llcommandmanager.h
+++ b/indra/llui/llcommandmanager.h
@@ -198,7 +198,7 @@ protected:
     void addCommand(LLCommand * command);
 
 private:
-    typedef std::map<LLUUID, U32>       CommandIndexMap;
+    typedef std::map<LLUUID, size_t>    CommandIndexMap;
     typedef std::vector<LLCommand *>    CommandVector;
 
     CommandVector   mCommands;
diff --git a/indra/llui/llconsole.cpp b/indra/llui/llconsole.cpp
index 795bf1070a..9fbfb3e5fa 100644
--- a/indra/llui/llconsole.cpp
+++ b/indra/llui/llconsole.cpp
@@ -77,7 +77,7 @@ void LLConsole::setLinePersistTime(F32 seconds)
     mFadeTime = mLinePersistTime - FADE_DURATION;
 }
 
-void LLConsole::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLConsole::reshape(S32 width, S32 height, bool called_from_parent)
 {
     S32 new_width = llmax(50, llmin(getRect().getWidth(), width));
     S32 new_height = llmax(llfloor(mFont->getLineHeight()) + 15, llmin(getRect().getHeight(), height));
@@ -147,11 +147,11 @@ void LLConsole::draw()
         return;
     }
 
-    U32 num_lines=0;
+    size_t num_lines{ 0 };
 
     paragraph_t::reverse_iterator paragraph_it;
     paragraph_it = mParagraphs.rbegin();
-    U32 paragraph_num=mParagraphs.size();
+    auto paragraph_num=mParagraphs.size();
 
     while (!mParagraphs.empty() && paragraph_it != mParagraphs.rend())
     {
@@ -159,7 +159,7 @@ void LLConsole::draw()
         if(num_lines > mMaxLines
             || ( (mLinePersistTime > (F32)0.f) && ((*paragraph_it).mAddTime - skip_time)/(mLinePersistTime - mFadeTime) <= (F32)0.f))
         {                           //All lines above here are done.  Lose them.
-            for (U32 i=0;i<paragraph_num;i++)
+            for (size_t i = 0; i < paragraph_num; i++)
             {
                 if (!mParagraphs.empty())
                     mParagraphs.pop_front();
@@ -258,7 +258,7 @@ void LLConsole::Paragraph::makeParagraphColorSegments (const LLColor4 &color)
         ParagraphColorSegment color_segment;
 
         color_segment.mColor.setValue(color_llsd);
-        color_segment.mNumChars = color_str.length();
+        color_segment.mNumChars = static_cast<S32>(color_str.length());
 
         mParagraphColorSegments.push_back(color_segment);
     }
@@ -310,7 +310,7 @@ void LLConsole::Paragraph::updateLines(F32 screen_width, const LLFontGL* font, b
             skip_chars = 0;
         }
 
-        U32 drawable = font->maxDrawableChars(mParagraphText.c_str()+paragraph_offset, screen_width, line_end - paragraph_offset, LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
+        U32 drawable = font->maxDrawableChars(mParagraphText.c_str()+paragraph_offset, screen_width, static_cast<S32>(line_end) - paragraph_offset, LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
 
         if (drawable != 0)
         {
@@ -380,7 +380,7 @@ void LLConsole::updateClass()
 void LLConsole::update()
 {
     {
-        LLMutexLock lock(&mMutex);
+        LLCoros::LockType lock(mMutex);
 
         while (!mLines.empty())
         {
diff --git a/indra/llui/llconsole.h b/indra/llui/llconsole.h
index d3dc1bbfde..cc9fd71d84 100644
--- a/indra/llui/llconsole.h
+++ b/indra/llui/llconsole.h
@@ -132,7 +132,7 @@ public:
     // each line lasts this long after being added
     void            setLinePersistTime(F32 seconds);
 
-    void            reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    void            reshape(S32 width, S32 height, bool called_from_parent = true);
 
     // -1 = monospace, 0 means small, font size = 1 means big
     void            setFontSize(S32 size_index);
diff --git a/indra/llui/llcontainerview.cpp b/indra/llui/llcontainerview.cpp
index f01d66382c..4c2912cde6 100644
--- a/indra/llui/llcontainerview.cpp
+++ b/indra/llui/llcontainerview.cpp
@@ -57,11 +57,11 @@ LLContainerView::~LLContainerView()
     // Children all cleaned up by default view destructor.
 }
 
-BOOL LLContainerView::postBuild()
+bool LLContainerView::postBuild()
 {
     setDisplayChildren(mDisplayChildren);
-    reshape(getRect().getWidth(), getRect().getHeight(), FALSE);
-    return TRUE;
+    reshape(getRect().getWidth(), getRect().getHeight(), false);
+    return true;
 }
 
 bool LLContainerView::addChild(LLView* child, S32 tab_group)
@@ -74,14 +74,14 @@ bool LLContainerView::addChild(LLView* child, S32 tab_group)
     return res;
 }
 
-BOOL LLContainerView::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLContainerView::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     return handleMouseDown(x, y, mask);
 }
 
-BOOL LLContainerView::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLContainerView::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if (mDisplayChildren)
     {
         handled = (LLView::childrenHandleMouseDown(x, y, mask) != NULL);
@@ -91,16 +91,16 @@ BOOL LLContainerView::handleMouseDown(S32 x, S32 y, MASK mask)
         if( mShowLabel && (y >= getRect().getHeight() - 10) )
         {
             setDisplayChildren(!mDisplayChildren);
-            reshape(getRect().getWidth(), getRect().getHeight(), FALSE);
-            handled = TRUE;
+            reshape(getRect().getWidth(), getRect().getHeight(), false);
+            handled = true;
         }
     }
     return handled;
 }
 
-BOOL LLContainerView::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLContainerView::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if (mDisplayChildren)
     {
         handled = (LLView::childrenHandleMouseUp(x, y, mask) != NULL);
@@ -128,7 +128,7 @@ void LLContainerView::draw()
 }
 
 
-void LLContainerView::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLContainerView::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLRect scroller_rect;
     scroller_rect.setOriginAndSize(0, 0, width, height);
@@ -159,7 +159,7 @@ void LLContainerView::reshape(S32 width, S32 height, BOOL called_from_parent)
     }
 }
 
-void LLContainerView::arrange(S32 width, S32 height, BOOL called_from_parent)
+void LLContainerView::arrange(S32 width, S32 height, bool called_from_parent)
 {
     // Determine the sizes and locations of all contained views
     S32 total_height = 0;
@@ -242,7 +242,7 @@ void LLContainerView::arrange(S32 width, S32 height, BOOL called_from_parent)
     {
         if (getParent())
         {
-            getParent()->reshape(getParent()->getRect().getWidth(), getParent()->getRect().getHeight(), FALSE);
+            getParent()->reshape(getParent()->getRect().getWidth(), getParent()->getRect().getHeight(), false);
         }
     }
 
@@ -288,7 +288,7 @@ void LLContainerView::setLabel(const std::string& label)
     mLabel = label;
 }
 
-void LLContainerView::setDisplayChildren(BOOL displayChildren)
+void LLContainerView::setDisplayChildren(bool displayChildren)
 {
     mDisplayChildren = displayChildren;
     for (child_list_const_iter_t child_iter = getChildList()->begin();
diff --git a/indra/llui/llcontainerview.h b/indra/llui/llcontainerview.h
index 118d3a967c..319fb7d5e9 100644
--- a/indra/llui/llcontainerview.h
+++ b/indra/llui/llcontainerview.h
@@ -49,8 +49,8 @@ public:
         Optional<bool> display_children;
         Params()
             : label("label"),
-              show_label("show_label", FALSE),
-              display_children("display_children", TRUE)
+              show_label("show_label", false),
+              display_children("display_children", true)
         {
             changeDefault(mouse_opaque, false);
         }
@@ -65,30 +65,30 @@ protected:
 public:
     ~LLContainerView();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ bool addChild(LLView* view, S32 tab_group = 0);
 
-    /*virtual*/ BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseUp(S32 x, S32 y, MASK mask);
 
     /*virtual*/ void draw();
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
     /*virtual*/ LLRect getRequiredRect();   // Return the height of this object, given the set options.
 
     void setLabel(const std::string& label);
-    void showLabel(BOOL show) { mShowLabel = show; }
-    void setDisplayChildren(BOOL displayChildren);
-    BOOL getDisplayChildren() { return mDisplayChildren; }
+    void showLabel(bool show) { mShowLabel = show; }
+    void setDisplayChildren(bool displayChildren);
+    bool getDisplayChildren() { return mDisplayChildren; }
     void setScrollContainer(LLScrollContainer* scroll) {mScrollContainer = scroll;}
 
  private:
     LLScrollContainer* mScrollContainer;
-    void arrange(S32 width, S32 height, BOOL called_from_parent = TRUE);
-    BOOL mShowLabel;
+    void arrange(S32 width, S32 height, bool called_from_parent = true);
+    bool mShowLabel;
 
 protected:
-    BOOL mDisplayChildren;
+    bool mDisplayChildren;
     std::string mLabel;
 };
 #endif // LL_CONTAINERVIEW_
diff --git a/indra/llui/llctrlselectioninterface.cpp b/indra/llui/llctrlselectioninterface.cpp
index 10e5a75bff..0a5512afa1 100644
--- a/indra/llui/llctrlselectioninterface.cpp
+++ b/indra/llui/llctrlselectioninterface.cpp
@@ -33,14 +33,14 @@
 LLCtrlSelectionInterface::~LLCtrlSelectionInterface()
 { }
 
-BOOL LLCtrlSelectionInterface::selectByValue(LLSD value)
+bool LLCtrlSelectionInterface::selectByValue(LLSD value)
 {
-    return setSelectedByValue(value, TRUE);
+    return setSelectedByValue(value, true);
 }
 
-BOOL LLCtrlSelectionInterface::deselectByValue(LLSD value)
+bool LLCtrlSelectionInterface::deselectByValue(LLSD value)
 {
-    return setSelectedByValue(value, FALSE);
+    return setSelectedByValue(value, false);
 }
 
 
diff --git a/indra/llui/llctrlselectioninterface.h b/indra/llui/llctrlselectioninterface.h
index 56dd7a7415..c845f7027d 100644
--- a/indra/llui/llctrlselectioninterface.h
+++ b/indra/llui/llctrlselectioninterface.h
@@ -47,29 +47,29 @@ public:
         OP_DESELECT,
     };
 
-    virtual BOOL    getCanSelect() const = 0;
+    virtual bool    getCanSelect() const = 0;
 
     virtual S32     getItemCount() const = 0;
 
-    virtual BOOL    selectFirstItem() = 0;
-    virtual BOOL    selectNthItem( S32 index ) = 0;
-    virtual BOOL    selectItemRange( S32 first, S32 last ) = 0;
+    virtual bool    selectFirstItem() = 0;
+    virtual bool    selectNthItem( S32 index ) = 0;
+    virtual bool    selectItemRange( S32 first, S32 last ) = 0;
 
     virtual S32     getFirstSelectedIndex() const = 0;
 
     // TomY TODO: Simply cast the UUIDs to LLSDs, using the selectByValue function
-    virtual BOOL    setCurrentByID( const LLUUID& id ) = 0;
+    virtual bool    setCurrentByID( const LLUUID& id ) = 0;
     virtual LLUUID  getCurrentID() const = 0;
 
-            BOOL    selectByValue(const LLSD value);
-            BOOL    deselectByValue(const LLSD value);
-    virtual BOOL    setSelectedByValue(const LLSD& value, BOOL selected) = 0;
+            bool    selectByValue(const LLSD value);
+            bool    deselectByValue(const LLSD value);
+    virtual bool    setSelectedByValue(const LLSD& value, bool selected) = 0;
     virtual LLSD    getSelectedValue() = 0;
 
-    virtual BOOL    isSelected(const LLSD& value) const = 0;
+    virtual bool    isSelected(const LLSD& value) const = 0;
 
-    virtual BOOL    operateOnSelection(EOperation op) = 0;
-    virtual BOOL    operateOnAll(EOperation op) = 0;
+    virtual bool    operateOnSelection(EOperation op) = 0;
+    virtual bool    operateOnAll(EOperation op) = 0;
 };
 
 class LLCtrlListInterface : public LLCtrlSelectionInterface
@@ -88,7 +88,7 @@ public:
     virtual LLScrollListItem* addSimpleElement(const std::string& value, EAddPosition pos, const LLSD& id) = 0;
 
     virtual void clearRows() = 0;
-    virtual void sortByColumn(const std::string& name, BOOL ascending) = 0;
+    virtual void sortByColumn(const std::string& name, bool ascending) = 0;
 };
 
 class LLCtrlScrollInterface
diff --git a/indra/llui/lldockablefloater.cpp b/indra/llui/lldockablefloater.cpp
index 22e1ac4334..19ae03cdf9 100644
--- a/indra/llui/lldockablefloater.cpp
+++ b/indra/llui/lldockablefloater.cpp
@@ -40,9 +40,9 @@ void LLDockableFloater::init(LLDockableFloater* thiz)
     thiz->resetInstance();
 
     // all dockable floaters should have close, dock and minimize buttons
-    thiz->setCanClose(TRUE);
+    thiz->setCanClose(true);
     thiz->setCanDock(true);
-    thiz->setCanMinimize(TRUE);
+    thiz->setCanMinimize(true);
     thiz->setOverlapsScreenChannel(false);
     thiz->mForceDocking = false;
 }
@@ -74,7 +74,7 @@ LLDockableFloater::~LLDockableFloater()
 {
 }
 
-BOOL LLDockableFloater::postBuild()
+bool LLDockableFloater::postBuild()
 {
     // Remember we should force docking when the floater is opened for the first time
     if (mIsDockedStateForcedCallback != NULL && mIsDockedStateForcedCallback())
@@ -108,14 +108,14 @@ void LLDockableFloater::toggleInstance(const LLSD& sdname)
     // if floater undocked
     else if (instance != NULL)
     {
-        instance->setMinimized(FALSE);
+        instance->setMinimized(false);
         if (instance->getVisible())
         {
-            instance->setVisible(FALSE);
+            instance->setVisible(false);
         }
         else
         {
-            instance->setVisible(TRUE);
+            instance->setVisible(true);
             gFloaterView->bringToFront(instance);
         }
     }
@@ -127,13 +127,13 @@ void LLDockableFloater::resetInstance()
     {
         if (sInstanceHandle.get() != NULL && sInstanceHandle.get()->isDocked())
         {
-            sInstanceHandle.get()->setVisible(FALSE);
+            sInstanceHandle.get()->setVisible(false);
         }
         sInstanceHandle = getHandle();
     }
 }
 
-void LLDockableFloater::setVisible(BOOL visible)
+void LLDockableFloater::setVisible(bool visible)
 {
     // Force docking if requested
     if (visible && mForceDocking)
@@ -160,12 +160,12 @@ void LLDockableFloater::setVisible(BOOL visible)
     LLFloater::setVisible(visible);
 }
 
-void LLDockableFloater::setMinimized(BOOL minimize)
+void LLDockableFloater::setMinimized(bool minimize)
 {
     if(minimize && isDocked())
     {
         // minimizing a docked floater just hides it
-        setVisible(FALSE);
+        setVisible(false);
     }
     else
     {
@@ -185,14 +185,14 @@ LLView * LLDockableFloater::getDockWidget()
 
 void LLDockableFloater::onDockHidden()
 {
-    setCanDock(FALSE);
+    setCanDock(false);
 }
 
 void LLDockableFloater::onDockShown()
 {
     if (!isMinimized())
     {
-        setCanDock(TRUE);
+        setCanDock(true);
     }
 }
 
diff --git a/indra/llui/lldockablefloater.h b/indra/llui/lldockablefloater.h
index e7ceb235a7..3effc977db 100644
--- a/indra/llui/lldockablefloater.h
+++ b/indra/llui/lldockablefloater.h
@@ -81,7 +81,7 @@ public:
      *  If descendant class overrides postBuild() in order to perform specific
      *  construction then it must still invoke its superclass' implementation.
      */
-    /* virtula */BOOL postBuild();
+    /* virtula */bool postBuild();
     /* virtual */void setDocked(bool docked, bool pop_on_undock = true);
     /* virtual */void draw();
 
@@ -89,13 +89,13 @@ public:
      *  If descendant class overrides setVisible() then it must still invoke its
      *  superclass' implementation.
      */
-    /*virtual*/ void setVisible(BOOL visible);
+    /*virtual*/ void setVisible(bool visible);
 
     /**
      *  If descendant class overrides setMinimized() then it must still invoke its
      *  superclass' implementation.
      */
-    /*virtual*/ void setMinimized(BOOL minimize);
+    /*virtual*/ void setMinimized(bool minimize);
 
     LLView * getDockWidget();
 
@@ -129,7 +129,7 @@ protected:
 
     // Checks if docking should be forced.
     // It may be useful e.g. if floater created in mouselook mode (see EXT-5609)
-    boost::function<BOOL ()> mIsDockedStateForcedCallback;
+    boost::function<bool ()> mIsDockedStateForcedCallback;
 
 private:
     std::unique_ptr<LLDockControl> mDockControl;
diff --git a/indra/llui/lldraghandle.cpp b/indra/llui/lldraghandle.cpp
index dbec1d5d80..15536178ab 100644
--- a/indra/llui/lldraghandle.cpp
+++ b/indra/llui/lldraghandle.cpp
@@ -57,7 +57,7 @@ LLDragHandle::LLDragHandle(const LLDragHandle::Params& p)
     mLastMouseScreenY( 0 ),
     mTitleBox( NULL ),
     mMaxTitleWidth( 0 ),
-    mForeground( TRUE ),
+    mForeground( true ),
     mDragHighlightColor(p.drag_highlight_color()),
     mDragShadowColor(p.drag_shadow_color())
 
@@ -79,7 +79,7 @@ void LLDragHandle::initFromParams(const LLDragHandle::Params& p)
     setTitle( p.label );
 }
 
-void LLDragHandle::setTitleVisible(BOOL visible)
+void LLDragHandle::setTitleVisible(bool visible)
 {
     if(mTitleBox)
     {
@@ -160,7 +160,7 @@ void LLDragHandleTop::draw()
 
         LLRect title_rect = mTitleBox->getRect();
         S32 title_right = title_rect.mLeft + mTitleWidth;
-        BOOL show_right_side = title_right < getRect().getWidth();
+        bool show_right_side = title_right < getRect().getWidth();
 
         for( S32 i=0; i<4; i++ )
         {
@@ -211,7 +211,7 @@ void LLDragHandleLeft::draw()
         // no titles yet
         //LLRect title_rect = mTitleBox->getRect();
         //S32 title_right = title_rect.mLeft + mTitleWidth;
-        //BOOL show_right_side = title_right < getRect().getWidth();
+        //bool show_right_side = title_right < getRect().getWidth();
 
         S32 line = left;
         for( S32 i=0; i<4; i++ )
@@ -256,13 +256,13 @@ void LLDragHandleTop::reshapeTitleBox()
     mTitleBox->setShape( title_rect );
 }
 
-void LLDragHandleTop::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLDragHandleTop::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLView::reshape(width, height, called_from_parent);
     reshapeTitleBox();
 }
 
-void LLDragHandleLeft::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLDragHandleLeft::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLView::reshape(width, height, called_from_parent);
 }
@@ -271,7 +271,7 @@ void LLDragHandleLeft::reshape(S32 width, S32 height, BOOL called_from_parent)
 // UI event handling
 //-------------------------------------------------------------
 
-BOOL LLDragHandle::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLDragHandle::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // Route future Mouse messages here preemptively.  (Release on mouse up.)
     // No handler needed for focus lost since this clas has no state that depends on it.
@@ -282,11 +282,11 @@ BOOL LLDragHandle::handleMouseDown(S32 x, S32 y, MASK mask)
     mLastMouseScreenY = mDragLastScreenY;
 
     // Note: don't pass on to children
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDragHandle::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLDragHandle::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if( hasMouseCapture() )
     {
@@ -295,13 +295,13 @@ BOOL LLDragHandle::handleMouseUp(S32 x, S32 y, MASK mask)
     }
 
     // Note: don't pass on to children
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLDragHandle::handleHover(S32 x, S32 y, MASK mask)
+bool LLDragHandle::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     // We only handle the click if the click both started and ended within us
     if( hasMouseCapture() )
@@ -324,11 +324,11 @@ BOOL LLDragHandle::handleHover(S32 x, S32 y, MASK mask)
                 delta_y >= SLOP)
             {
                 parent->setDocked(false, false);
-                return TRUE;
+                return true;
             }
             else
             {
-                return FALSE;
+                return false;
             }
         }
 
@@ -367,13 +367,13 @@ BOOL LLDragHandle::handleHover(S32 x, S32 y, MASK mask)
 
         getWindow()->setCursor(UI_CURSOR_ARROW);
         LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (active)" <<LL_ENDL;
-        handled = TRUE;
+        handled = true;
     }
     else
     {
         getWindow()->setCursor(UI_CURSOR_ARROW);
         LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (inactive)" << LL_ENDL;
-        handled = TRUE;
+        handled = true;
     }
 
     // Note: don't pass on to children
diff --git a/indra/llui/lldraghandle.h b/indra/llui/lldraghandle.h
index f61dae8dc3..a522e63243 100644
--- a/indra/llui/lldraghandle.h
+++ b/indra/llui/lldraghandle.h
@@ -61,20 +61,20 @@ public:
 
     virtual void setValue(const LLSD& value);
 
-    void            setForeground(BOOL b)       { mForeground = b; }
-    BOOL            getForeground() const       { return mForeground; }
+    void            setForeground(bool b)       { mForeground = b; }
+    bool            getForeground() const       { return mForeground; }
     void            setMaxTitleWidth(S32 max_width) {mMaxTitleWidth = llmin(max_width, mMaxTitleWidth); }
     S32             getMaxTitleWidth() const { return mMaxTitleWidth; }
     void            setButtonsRect(const LLRect& rect){ mButtonsRect = rect; }
     LLRect          getButtonsRect() { return mButtonsRect; }
-    void            setTitleVisible(BOOL visible);
+    void            setTitleVisible(bool visible);
 
     virtual void    setTitle( const std::string& title ) = 0;
     virtual std::string getTitle() const = 0;
 
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
 
 protected:
     LLDragHandle(const Params&);
@@ -93,7 +93,7 @@ private:
     LLUIColor       mDragHighlightColor;
     LLUIColor       mDragShadowColor;
     S32             mMaxTitleWidth;
-    BOOL            mForeground;
+    bool            mForeground;
 
     // Pixels near the edge to snap floaters.
     static S32      sSnapMargin;
@@ -111,7 +111,7 @@ public:
     virtual void    setTitle( const std::string& title );
     virtual std::string getTitle() const;
     virtual void    draw();
-    virtual void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual void    reshape(S32 width, S32 height, bool called_from_parent = true);
 
 private:
     void    reshapeTitleBox();
@@ -129,7 +129,7 @@ public:
     virtual void    setTitle( const std::string& title );
     virtual std::string getTitle() const;
     virtual void    draw();
-    virtual void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual void    reshape(S32 width, S32 height, bool called_from_parent = true);
 
 };
 
diff --git a/indra/llui/lleditmenuhandler.h b/indra/llui/lleditmenuhandler.h
index f516b0f2e2..ff111c16a7 100644
--- a/indra/llui/lleditmenuhandler.h
+++ b/indra/llui/lleditmenuhandler.h
@@ -35,29 +35,29 @@ public:
     virtual ~LLEditMenuHandler();
 
     virtual void    undo() {};
-    virtual BOOL    canUndo() const { return FALSE; }
+    virtual bool    canUndo() const { return false; }
 
     virtual void    redo() {};
-    virtual BOOL    canRedo() const { return FALSE; }
+    virtual bool    canRedo() const { return false; }
 
     virtual void    cut() {};
-    virtual BOOL    canCut() const { return FALSE; }
+    virtual bool    canCut() const { return false; }
 
     virtual void    copy() {};
-    virtual BOOL    canCopy() const { return FALSE; }
+    virtual bool    canCopy() const { return false; }
 
     virtual void    paste() {};
-    virtual BOOL    canPaste() const { return FALSE; }
+    virtual bool    canPaste() const { return false; }
 
     // "delete" is a keyword
     virtual void    doDelete() {};
-    virtual BOOL    canDoDelete() const { return FALSE; }
+    virtual bool    canDoDelete() const { return false; }
 
     virtual void    selectAll() {};
-    virtual BOOL    canSelectAll() const { return FALSE; }
+    virtual bool    canSelectAll() const { return false; }
 
     virtual void    deselect() {};
-    virtual BOOL    canDeselect() const { return FALSE; }
+    virtual bool    canDeselect() const { return false; }
 
     // TODO: Instead of being a public data member, it would be better to hide it altogether
     // and have a "set" method and then a bunch of static versions of the cut, copy, paste
diff --git a/indra/llui/llemojidictionary.cpp b/indra/llui/llemojidictionary.cpp
index f16c38a11a..925608e47e 100644
--- a/indra/llui/llemojidictionary.cpp
+++ b/indra/llui/llemojidictionary.cpp
@@ -210,7 +210,7 @@ void LLEmojiDictionary::findByShortCode(
                 std::size_t begin, end;
                 if (searchInShortCode(begin, end, shortCode, needle))
                 {
-                    results[begin].emplace_back(d.Character, shortCode, begin, end);
+                    results[static_cast<llwchar>(begin)].emplace_back(d.Character, shortCode, begin, end);
                 }
             }
         }
diff --git a/indra/llui/llfiltereditor.cpp b/indra/llui/llfiltereditor.cpp
index 7a5f342cd5..f7b3a1e9a6 100644
--- a/indra/llui/llfiltereditor.cpp
+++ b/indra/llui/llfiltereditor.cpp
@@ -33,7 +33,7 @@
 LLFilterEditor::LLFilterEditor(const LLFilterEditor::Params& p)
 :   LLSearchEditor(p)
 {
-    setCommitOnFocusLost(FALSE); // we'll commit on every keystroke, don't re-commit when we take focus away (i.e. we go to interact with the actual results!)
+    setCommitOnFocusLost(false); // we'll commit on every keystroke, don't re-commit when we take focus away (i.e. we go to interact with the actual results!)
 }
 
 
diff --git a/indra/llui/llflashtimer.cpp b/indra/llui/llflashtimer.cpp
index 2de05f04c5..c3db24c987 100644
--- a/indra/llui/llflashtimer.cpp
+++ b/indra/llui/llflashtimer.cpp
@@ -53,7 +53,7 @@ void LLFlashTimer::unset()
     mCallback = NULL;
 }
 
-BOOL LLFlashTimer::tick()
+bool LLFlashTimer::tick()
 {
     mIsCurrentlyHighlighted = !mIsCurrentlyHighlighted;
 
diff --git a/indra/llui/llflashtimer.h b/indra/llui/llflashtimer.h
index 037e32ac50..b55ce53fc0 100644
--- a/indra/llui/llflashtimer.h
+++ b/indra/llui/llflashtimer.h
@@ -46,7 +46,7 @@ public:
     LLFlashTimer(callback_t cb = NULL, S32 count = 0, F32 period = 0.0);
     ~LLFlashTimer() {};
 
-    /*virtual*/ BOOL tick();
+    /*virtual*/ bool tick();
 
     void startFlashing();
     void stopFlashing();
diff --git a/indra/llui/llflatlistview.cpp b/indra/llui/llflatlistview.cpp
index cd866f1625..1799968afb 100644
--- a/indra/llui/llflatlistview.cpp
+++ b/indra/llui/llflatlistview.cpp
@@ -48,7 +48,7 @@ LLFlatListView::Params::Params()
     no_items_text("no_items_text")
 {};
 
-void LLFlatListView::reshape(S32 width, S32 height, BOOL called_from_parent /* = TRUE */)
+void LLFlatListView::reshape(S32 width, S32 height, bool called_from_parent /* = true */)
 {
     S32 delta = height - getRect().getHeight();
     LLScrollContainer::reshape(width, height, called_from_parent);
@@ -390,7 +390,7 @@ U32 LLFlatListView::size(const bool only_visible_items) const
     }
     else
     {
-        return mItemPairs.size();
+        return static_cast<U32>(mItemPairs.size());
     }
 }
 
@@ -528,7 +528,7 @@ void LLFlatListView::draw()
 }
 
 // virtual
-BOOL LLFlatListView::postBuild()
+bool LLFlatListView::postBuild()
 {
     setTabStop(true);
     return LLScrollContainer::postBuild();
@@ -563,7 +563,7 @@ void LLFlatListView::rearrangeItems()
     }
 
     // add paddings between items, excluding invisible ones
-    height += mItemPad * (mItemPairs.size() - invisible_children_count - 1);
+    height += mItemPad * (static_cast<S32>(mItemPairs.size()) - invisible_children_count - 1);
 
     LLRect rc = mItemsPanel->getRect();
     S32 width = mItemsNoScrollWidth;
@@ -610,7 +610,7 @@ void LLFlatListView::onItemMouseClick(item_pair_t* item_pair, MASK mask)
         return;
     }
 
-    setFocus(TRUE);
+    setFocus(true);
 
     bool select_item = !isSelected(item_pair);
 
@@ -714,10 +714,10 @@ void LLFlatListView::onItemRightMouseClick(item_pair_t* item_pair, MASK mask)
     onItemMouseClick(item_pair, mask);
 }
 
-BOOL LLFlatListView::handleKeyHere(KEY key, MASK mask)
+bool LLFlatListView::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL reset_selection = (mask != MASK_SHIFT);
-    BOOL handled = FALSE;
+    bool reset_selection = (mask != MASK_SHIFT);
+    bool handled = false;
     switch (key)
     {
         case KEY_RETURN:
@@ -725,7 +725,7 @@ BOOL LLFlatListView::handleKeyHere(KEY key, MASK mask)
             if (mSelectedItemPairs.size() && mask == MASK_NONE)
             {
                 mOnReturnSignal(this, getValue());
-                handled = TRUE;
+                handled = true;
             }
             break;
         }
@@ -753,7 +753,7 @@ BOOL LLFlatListView::handleKeyHere(KEY key, MASK mask)
         {
             if (mask == MASK_NONE)
             {
-                setFocus(FALSE); // pass focus to the game area (EXT-8357)
+                setFocus(false); // pass focus to the game area (EXT-8357)
             }
             break;
         }
@@ -779,7 +779,7 @@ BOOL LLFlatListView::handleKeyHere(KEY key, MASK mask)
         localRectToScreen(selected_rc, &screen_rc);
         notifyParent(LLSD().with("scrollToShowRect",screen_rc.getValue()));*/
 
-        handled = TRUE;
+        handled = true;
     }
 
     return handled ? handled : LLScrollContainer::handleKeyHere(key, mask);
@@ -1040,7 +1040,7 @@ bool LLFlatListView::selectNextItemPair(bool is_up_direction, bool reset_selecti
     return false;
 }
 
-BOOL LLFlatListView::canSelectAll() const
+bool LLFlatListView::canSelectAll() const
 {
     return 0 != size() && mAllowSelection && mMultipleSelection;
 }
@@ -1198,14 +1198,14 @@ void LLFlatListView::onFocusReceived()
 {
     if (size())
     {
-        mSelectedItemsBorder->setVisible(TRUE);
+        mSelectedItemsBorder->setVisible(true);
     }
     gEditMenuHandler = this;
 }
 // virtual
 void LLFlatListView::onFocusLost()
 {
-    mSelectedItemsBorder->setVisible(FALSE);
+    mSelectedItemsBorder->setVisible(false);
     // Route menu back to the default
     if (gEditMenuHandler == this)
     {
@@ -1376,7 +1376,7 @@ bool LLFlatListViewEx::updateItemVisibility(LLPanel* item, const LLSD &action)
     if (!item)
         return false;
 
-    BOOL visible = TRUE;
+    bool visible = true;
 
     // 0 signifies that filter is matched,
     // i.e. we don't hide items that don't support 'match_filter' action, separators etc.
@@ -1390,7 +1390,7 @@ bool LLFlatListViewEx::updateItemVisibility(LLPanel* item, const LLSD &action)
         if (!mForceShowingUnmatchedItems)
         {
             selectItem(item, false);
-            visible = FALSE;
+            visible = false;
         }
     }
 
diff --git a/indra/llui/llflatlistview.h b/indra/llui/llflatlistview.h
index ba269a7d78..6d75e9f282 100644
--- a/indra/llui/llflatlistview.h
+++ b/indra/llui/llflatlistview.h
@@ -113,7 +113,7 @@ public:
     };
 
     // disable traversal when finding widget to hand focus off to
-    /*virtual*/ BOOL canFocusChildren() const { return FALSE; }
+    /*virtual*/ bool canFocusChildren() const { return false; }
 
     /**
      * Connects callback to signal called when Return key is pressed.
@@ -121,7 +121,7 @@ public:
     boost::signals2::connection setReturnCallback( const commit_signal_t::slot_type& cb ) { return mOnReturnSignal.connect(cb); }
 
     /** Overridden LLPanel's reshape, height is ignored, the list sets its height to accommodate all items */
-    virtual void reshape(S32 width, S32 height, BOOL called_from_parent  = TRUE);
+    virtual void reshape(S32 width, S32 height, bool called_from_parent  = true);
 
     /** Returns full rect of child panel */
     const LLRect& getItemsRect() const;
@@ -264,7 +264,7 @@ public:
     void setCommitOnSelectionChange(bool b)     { mCommitOnSelectionChange = b; }
 
     /** Get number of selected items in the list */
-    U32 numSelected() const {return mSelectedItemPairs.size(); }
+    U32 numSelected() const {return static_cast<U32>(mSelectedItemPairs.size()); }
 
     /** Get number of (visible) items in the list */
     U32 size(const bool only_visible_items = true) const;
@@ -346,7 +346,7 @@ protected:
 
     virtual bool selectNextItemPair(bool is_up_direction, bool reset_selection);
 
-    virtual BOOL canSelectAll() const;
+    virtual bool canSelectAll() const;
     virtual void selectAll();
 
     virtual bool isSelected(item_pair_t* item_pair) const;
@@ -364,9 +364,9 @@ protected:
      */
     void notifyParentItemsRectChanged();
 
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool handleKeyHere(KEY key, MASK mask);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     virtual void onFocusReceived();
 
diff --git a/indra/llui/llfloater.cpp b/indra/llui/llfloater.cpp
index 75254f80d8..e6ecf3c283 100644
--- a/indra/llui/llfloater.cpp
+++ b/indra/llui/llfloater.cpp
@@ -116,7 +116,7 @@ LLFloater::click_callback LLFloater::sButtonCallbacks[BUTTON_COUNT] =
 };
 
 LLMultiFloater* LLFloater::sHostp = NULL;
-BOOL            LLFloater::sQuitting = FALSE; // Flag to prevent storing visibility controls while quitting
+bool            LLFloater::sQuitting = false; // Flag to prevent storing visibility controls while quitting
 
 LLFloaterView* gFloaterView = NULL;
 
@@ -261,15 +261,15 @@ LLFloater::LLFloater(const LLSD& key, const LLFloater::Params& p)
     mHeaderHeight(p.header_height),
     mLegacyHeaderHeight(p.legacy_header_height),
     mDefaultRectForGroup(true),
-    mMinimized(FALSE),
-    mForeground(FALSE),
-    mFirstLook(TRUE),
+    mMinimized(false),
+    mForeground(false),
+    mFirstLook(true),
     mButtonScale(1.0f),
-    mAutoFocus(TRUE), // automatically take focus when opened
+    mAutoFocus(true), // automatically take focus when opened
     mCanDock(false),
     mDocked(false),
     mTornOff(false),
-    mHasBeenDraggedWhileMinimized(FALSE),
+    mHasBeenDraggedWhileMinimized(false),
     mPreviousMinimizedBottom(0),
     mPreviousMinimizedLeft(0),
     mDefaultRelativeX(p.rel_x),
@@ -281,10 +281,10 @@ LLFloater::LLFloater(const LLSD& key, const LLFloater::Params& p)
 //  mNotificationContext = new LLFloaterNotificationContext(getHandle());
 
     // Clicks stop here.
-    setMouseOpaque(TRUE);
+    setMouseOpaque(true);
 
     // Floaters always draw their background, unlike every other panel.
-    setBackgroundVisible(TRUE);
+    setBackgroundVisible(true);
 
     // Floaters start not minimized.  When minimized, they save their
     // prior rectangle to be used on restore.
@@ -307,28 +307,28 @@ void LLFloater::initFloater(const Params& p)
     // Close button.
     if (mCanClose)
     {
-        mButtonsEnabled[BUTTON_CLOSE] = TRUE;
+        mButtonsEnabled[BUTTON_CLOSE] = true;
     }
 
     // Help button: '?'
     //SL-14050 Disable all Help question marks
-    mButtonsEnabled[BUTTON_HELP] = FALSE;
+    mButtonsEnabled[BUTTON_HELP] = false;
 
     // Minimize button only for top draggers
     if ( !mDragOnLeft && mCanMinimize )
     {
-        mButtonsEnabled[BUTTON_MINIMIZE] = TRUE;
+        mButtonsEnabled[BUTTON_MINIMIZE] = true;
     }
 
     if(mCanDock)
     {
-        mButtonsEnabled[BUTTON_DOCK] = TRUE;
+        mButtonsEnabled[BUTTON_DOCK] = true;
     }
 
     buildButtons(p);
 
     // Floaters are created in the invisible state
-    setVisible(FALSE);
+    setVisible(false);
 
     if (!getParent())
     {
@@ -530,7 +530,7 @@ LLFloater::~LLFloater()
     // This is important so that floaters with persistent rects (i.e., those
     // created with rect control rather than an LLRect) are restored in their
     // correct, non-minimized positions.
-    setMinimized( FALSE );
+    setMinimized( false );
 
     delete mDragHandle;
     for (S32 i = 0; i < 4; i++)
@@ -598,12 +598,12 @@ LLControlGroup* LLFloater::getControlGroup()
     return LLUI::getInstance()->mSettingGroups["account"];
 }
 
-void LLFloater::setVisible( BOOL visible )
+void LLFloater::setVisible( bool visible )
 {
     LLPanel::setVisible(visible); // calls onVisibilityChange()
     if( visible && mFirstLook )
     {
-        mFirstLook = FALSE;
+        mFirstLook = false;
     }
 
     if( !visible )
@@ -632,7 +632,7 @@ void LLFloater::setVisible( BOOL visible )
 }
 
 
-void LLFloater::setIsSingleInstance(BOOL is_single_instance)
+void LLFloater::setIsSingleInstance(bool is_single_instance)
 {
     mSingleInstance = is_single_instance;
     if (!mIsReuseInitialized)
@@ -643,12 +643,12 @@ void LLFloater::setIsSingleInstance(BOOL is_single_instance)
 
 
 // virtual
-void LLFloater::onVisibilityChange ( BOOL new_visibility )
+void LLFloater::onVisibilityChange ( bool new_visibility )
 {
     if (new_visibility)
     {
         if (getHost())
-            getHost()->setFloaterFlashing(this, FALSE);
+            getHost()->setFloaterFlashing(this, false);
     }
     LLPanel::onVisibilityChange ( new_visibility );
 }
@@ -681,7 +681,7 @@ void LLFloater::openFloater(const LLSD& key)
 
     if (getHost() != NULL)
     {
-        getHost()->setMinimized(FALSE);
+        getHost()->setMinimized(false);
         getHost()->setVisibleAndFrontmost(mAutoFocus && !getIsChrome());
         getHost()->showFloater(this);
     }
@@ -693,7 +693,7 @@ void LLFloater::openFloater(const LLSD& key)
             floater_to_stack = LLFloaterReg::getLastFloaterCascading();
         }
         applyControlsAndPosition(floater_to_stack);
-        setMinimized(FALSE);
+        setMinimized(false);
         setVisibleAndFrontmost(mAutoFocus && !getIsChrome());
     }
 
@@ -714,7 +714,7 @@ void LLFloater::closeFloater(bool app_quitting)
 
     // Always unminimize before trying to close.
     // Most of the time the user will never see this state.
-    setMinimized(FALSE);
+    setMinimized(false);
 
     if (canClose())
     {
@@ -746,7 +746,7 @@ void LLFloater::closeFloater(bool app_quitting)
                     LLFloater* dependee = mDependeeHandle.get();
                     if (dependee && !dependee->isDead())
                     {
-                        dependee->setFocus(TRUE);
+                        dependee->setFocus(true);
                     }
                 }
             }
@@ -788,11 +788,11 @@ void LLFloater::closeFloater(bool app_quitting)
             // Hide the instance
             if (getHost())
             {
-                getHost()->setVisible(FALSE);
+                getHost()->setVisible(false);
             }
             else
             {
-                setVisible(FALSE);
+                setVisible(false);
                 if (!mReuseInstance)
                 {
                     destroy();
@@ -801,7 +801,7 @@ void LLFloater::closeFloater(bool app_quitting)
         }
         else
         {
-            setVisible(FALSE); // hide before destroying (so onVisibilityChange() gets called)
+            setVisible(false); // hide before destroying (so onVisibilityChange() gets called)
             if (!mReuseInstance)
             {
                 destroy();
@@ -825,7 +825,7 @@ void LLFloater::closeHostedFloater()
 }
 
 /*virtual*/
-void LLFloater::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLFloater::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLPanel::reshape(width, height, called_from_parent);
 }
@@ -852,7 +852,7 @@ void LLFloater::releaseFocus()
 {
     LLUI::getInstance()->removePopup(this);
 
-    setFocus(FALSE);
+    setFocus(false);
 
     if( gFocusMgr.childHasMouseCapture( this ) )
     {
@@ -1126,12 +1126,12 @@ std::string LLFloater::getShortTitle() const
     }
 }
 
-BOOL LLFloater::canSnapTo(const LLView* other_view)
+bool LLFloater::canSnapTo(const LLView* other_view)
 {
     if (NULL == other_view)
     {
         LL_WARNS() << "other_view is NULL" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if (other_view != getParent())
@@ -1142,7 +1142,7 @@ BOOL LLFloater::canSnapTo(const LLView* other_view)
             && mDependents.find(other_floaterp->getHandle()) != mDependents.end())
         {
             // this is a dependent that is already snapped to us, so don't snap back to it
-            return FALSE;
+            return false;
         }
     }
 
@@ -1232,16 +1232,16 @@ void LLFloater::handleReshape(const LLRect& new_rect, bool by_user)
     else
     {
         // If minimized, and origin has changed, set
-        // mHasBeenDraggedWhileMinimized to TRUE
+        // mHasBeenDraggedWhileMinimized to true
         if ((new_rect.mLeft != old_rect.mLeft) ||
             (new_rect.mBottom != old_rect.mBottom))
         {
-            mHasBeenDraggedWhileMinimized = TRUE;
+            mHasBeenDraggedWhileMinimized = true;
         }
     }
 }
 
-void LLFloater::setMinimized(BOOL minimize)
+void LLFloater::setMinimized(bool minimize)
 {
     const LLFloater::Params& default_params = LLFloater::getDefaultParams();
     S32 floater_header_size = default_params.header_height;
@@ -1257,7 +1257,7 @@ void LLFloater::setMinimized(BOOL minimize)
     if (minimize)
     {
         // minimized flag should be turned on before release focus
-        mMinimized = TRUE;
+        mMinimized = true;
         mExpandedRect = getRect();
 
         // If the floater has been dragged while minimized in the
@@ -1276,11 +1276,11 @@ void LLFloater::setMinimized(BOOL minimize)
 
         if (mButtonsEnabled[BUTTON_MINIMIZE])
         {
-            mButtonsEnabled[BUTTON_MINIMIZE] = FALSE;
-            mButtonsEnabled[BUTTON_RESTORE] = TRUE;
+            mButtonsEnabled[BUTTON_MINIMIZE] = false;
+            mButtonsEnabled[BUTTON_RESTORE] = true;
         }
 
-        setBorderVisible(TRUE);
+        setBorderVisible(true);
 
         for(handle_set_iter_t dependent_it = mDependents.begin();
             dependent_it != mDependents.end();
@@ -1291,11 +1291,11 @@ void LLFloater::setMinimized(BOOL minimize)
             {
                 if (floaterp->isMinimizeable())
                 {
-                    floaterp->setMinimized(TRUE);
+                    floaterp->setMinimized(true);
                 }
                 else if (!floaterp->isMinimized())
                 {
-                    floaterp->setVisible(FALSE);
+                    floaterp->setVisible(false);
                 }
             }
         }
@@ -1307,16 +1307,16 @@ void LLFloater::setMinimized(BOOL minimize)
         {
             if (mResizeBar[i] != NULL)
             {
-                mResizeBar[i]->setEnabled(FALSE);
+                mResizeBar[i]->setEnabled(false);
             }
             if (mResizeHandle[i] != NULL)
             {
-                mResizeHandle[i]->setEnabled(FALSE);
+                mResizeHandle[i]->setEnabled(false);
             }
         }
 
         // Reshape *after* setting mMinimized
-        reshape( minimized_width, floater_header_size, TRUE);
+        reshape( minimized_width, floater_header_size, true);
     }
     else
     {
@@ -1332,8 +1332,8 @@ void LLFloater::setMinimized(BOOL minimize)
         setOrigin( mExpandedRect.mLeft, mExpandedRect.mBottom );
         if (mButtonsEnabled[BUTTON_RESTORE])
         {
-            mButtonsEnabled[BUTTON_MINIMIZE] = TRUE;
-            mButtonsEnabled[BUTTON_RESTORE] = FALSE;
+            mButtonsEnabled[BUTTON_MINIMIZE] = true;
+            mButtonsEnabled[BUTTON_RESTORE] = false;
         }
 
         // show dependent floater
@@ -1344,8 +1344,8 @@ void LLFloater::setMinimized(BOOL minimize)
             LLFloater* floaterp = dependent_it->get();
             if (floaterp)
             {
-                floaterp->setMinimized(FALSE);
-                floaterp->setVisible(TRUE);
+                floaterp->setMinimized(false);
+                floaterp->setVisible(true);
             }
         }
 
@@ -1361,10 +1361,10 @@ void LLFloater::setMinimized(BOOL minimize)
             }
         }
 
-        mMinimized = FALSE;
+        mMinimized = false;
         setFrontmost();
         // Reshape *after* setting mMinimized
-        reshape( mExpandedRect.getWidth(), mExpandedRect.getHeight(), TRUE );
+        reshape( mExpandedRect.getWidth(), mExpandedRect.getHeight(), true );
     }
 
     make_ui_sound("UISndWindowClose");
@@ -1372,7 +1372,7 @@ void LLFloater::setMinimized(BOOL minimize)
     applyTitle ();
 }
 
-void LLFloater::setFocus( BOOL b )
+void LLFloater::setFocus( bool b )
 {
     if (b && getIsChrome())
     {
@@ -1380,7 +1380,7 @@ void LLFloater::setFocus( BOOL b )
     }
     LLView* last_focus = gFocusMgr.getLastFocusForGroup(this);
     // a descendent already has focus
-    BOOL child_had_focus = hasFocus();
+    bool child_had_focus = hasFocus();
 
     // give focus to first valid descendent
     LLPanel::setFocus(b);
@@ -1403,7 +1403,7 @@ void LLFloater::setFocus( BOOL b )
             last_focus->isInVisibleChain())
         {
             // *FIX: should handle case where focus doesn't stick
-            last_focus->setFocus(TRUE);
+            last_focus->setFocus(true);
         }
     }
     updateTransparency(b ? TT_ACTIVE : TT_INACTIVE);
@@ -1418,15 +1418,15 @@ void LLFloater::setRect(const LLRect &rect)
 }
 
 // virtual
-void LLFloater::setIsChrome(BOOL is_chrome)
+void LLFloater::setIsChrome(bool is_chrome)
 {
     // chrome floaters don't take focus at all
     if (is_chrome)
     {
         // remove focus if we're changing to chrome
-        setFocus(FALSE);
+        setFocus(false);
         // can't Ctrl-Tab to "chrome" floaters
-        setFocusRoot(FALSE);
+        setFocusRoot(false);
         mButtons[BUTTON_CLOSE]->setToolTip(LLStringExplicit(getButtonTooltip(Params(), BUTTON_CLOSE, is_chrome)));
     }
 
@@ -1434,7 +1434,7 @@ void LLFloater::setIsChrome(BOOL is_chrome)
 }
 
 // Change the draw style to account for the foreground state.
-void LLFloater::setForeground(BOOL front)
+void LLFloater::setForeground(bool front)
 {
     if (front != mForeground)
     {
@@ -1479,13 +1479,13 @@ void LLFloater::setHost(LLMultiFloater* host)
         // add tear off button
         if (mCanTearOff)
         {
-            mButtonsEnabled[BUTTON_TEAR_OFF] = TRUE;
+            mButtonsEnabled[BUTTON_TEAR_OFF] = true;
         }
     }
     else if (!mHostHandle.isDead() && !host)
     {
         mButtonScale = 1.f;
-        //mButtonsEnabled[BUTTON_TEAR_OFF] = FALSE;
+        //mButtonsEnabled[BUTTON_TEAR_OFF] = false;
     }
     if (host)
     {
@@ -1520,7 +1520,7 @@ void LLFloater::moveResizeHandlesToFront()
 }
 
 /*virtual*/
-BOOL LLFloater::isFrontmost()
+bool LLFloater::isFrontmost()
 {
     LLFloaterView* floater_view = getParentByType<LLFloaterView>();
     return getVisible()
@@ -1528,7 +1528,7 @@ BOOL LLFloater::isFrontmost()
                 && floater_view->getFrontmost() == this);
 }
 
-void LLFloater::addDependentFloater(LLFloater* floaterp, BOOL reposition, BOOL resize)
+void LLFloater::addDependentFloater(LLFloater* floaterp, bool reposition, bool resize)
 {
     mDependents.insert(floaterp->getHandle());
     floaterp->mDependeeHandle = getHandle();
@@ -1543,12 +1543,12 @@ void LLFloater::addDependentFloater(LLFloater* floaterp, BOOL reposition, BOOL r
                 rect.mBottom = base.mBottom;
             else if (rect.mLeft == base.mLeft)
                 rect.mRight = base.mRight;
-            floaterp->reshape(rect.getWidth(), rect.getHeight(), FALSE);
+            floaterp->reshape(rect.getWidth(), rect.getHeight(), false);
         }
         floaterp->setRect(rect);
         floaterp->setSnapTarget(getHandle());
     }
-    gFloaterView->adjustToFitScreen(floaterp, FALSE, TRUE);
+    gFloaterView->adjustToFitScreen(floaterp, false, true);
     if (floaterp->isFrontmost())
     {
         // make sure to bring self and sibling floaters to front
@@ -1556,7 +1556,7 @@ void LLFloater::addDependentFloater(LLFloater* floaterp, BOOL reposition, BOOL r
     }
 }
 
-void LLFloater::addDependentFloater(LLHandle<LLFloater> dependent, BOOL reposition, BOOL resize)
+void LLFloater::addDependentFloater(LLHandle<LLFloater> dependent, bool reposition, bool resize)
 {
     LLFloater* dependent_floaterp = dependent.get();
     if(dependent_floaterp)
@@ -1609,7 +1609,7 @@ void LLFloater::fitWithDependentsOnScreen(const LLRect& left, const LLRect& bott
     mTranslateWithDependents = false;
 }
 
-BOOL LLFloater::offerClickToButton(S32 x, S32 y, MASK mask, EFloaterButton index)
+bool LLFloater::offerClickToButton(S32 x, S32 y, MASK mask, EFloaterButton index)
 {
     if( mButtonsEnabled[index] )
     {
@@ -1622,23 +1622,23 @@ BOOL LLFloater::offerClickToButton(S32 x, S32 y, MASK mask, EFloaterButton index
             my_butt->handleMouseDown(local_x, local_y, mask))
         {
             // the button handled it
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLFloater::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLFloater::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     LLPanel::handleScrollWheel(x,y,clicks);
-    return TRUE;//always
+    return true;//always
 }
 
 // virtual
-BOOL LLFloater::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLFloater::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     LL_DEBUGS() << "LLFloater::handleMouseUp calling LLPanel (really LLView)'s handleMouseUp (first initialized xui to: " << getPathname() << " )" << LL_ENDL;
-    BOOL handled = LLPanel::handleMouseUp(x,y,mask); // Not implemented in LLPanel so this actually calls LLView
+    bool handled = LLPanel::handleMouseUp(x,y,mask); // Not implemented in LLPanel so this actually calls LLView
     if (handled) {
         LLViewerEventRecorder::instance().updateMouseEventInfo(x,y,-55,-55,getPathname());
     }
@@ -1646,7 +1646,7 @@ BOOL LLFloater::handleMouseUp(S32 x, S32 y, MASK mask)
 }
 
 // virtual
-BOOL LLFloater::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLFloater::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if( mMinimized )
     {
@@ -1654,19 +1654,19 @@ BOOL LLFloater::handleMouseDown(S32 x, S32 y, MASK mask)
         // Note: this block and the offerClickToButton helper method can be removed
         // because the parent container will handle it for us but we'll keep it here
         // for safety until after reworking the panel code to manage hidden children.
-        if(offerClickToButton(x, y, mask, BUTTON_CLOSE)) return TRUE;
-        if(offerClickToButton(x, y, mask, BUTTON_RESTORE)) return TRUE;
-        if(offerClickToButton(x, y, mask, BUTTON_TEAR_OFF)) return TRUE;
-        if(offerClickToButton(x, y, mask, BUTTON_DOCK)) return TRUE;
+        if(offerClickToButton(x, y, mask, BUTTON_CLOSE)) return true;
+        if(offerClickToButton(x, y, mask, BUTTON_RESTORE)) return true;
+        if(offerClickToButton(x, y, mask, BUTTON_TEAR_OFF)) return true;
+        if(offerClickToButton(x, y, mask, BUTTON_DOCK)) return true;
 
-        setFrontmost(TRUE, FALSE);
+        setFrontmost(true, false);
         // Otherwise pass to drag handle for movement
         return mDragHandle->handleMouseDown(x, y, mask);
     }
     else
     {
         bringToFront( x, y );
-        BOOL handled = LLPanel::handleMouseDown( x, y, mask );
+        bool handled = LLPanel::handleMouseDown( x, y, mask );
         if (handled) {
             LLViewerEventRecorder::instance().updateMouseEventInfo(x,y,-55,-55,getPathname());
         }
@@ -1675,14 +1675,14 @@ BOOL LLFloater::handleMouseDown(S32 x, S32 y, MASK mask)
 }
 
 // virtual
-BOOL LLFloater::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLFloater::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL was_minimized = mMinimized;
+    bool was_minimized = mMinimized;
     bringToFront( x, y );
     return was_minimized || LLPanel::handleRightMouseDown( x, y, mask );
 }
 
-BOOL LLFloater::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
+bool LLFloater::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
 {
     bringToFront( x, y );
     return LLPanel::handleMiddleMouseDown( x, y, mask );
@@ -1690,10 +1690,10 @@ BOOL LLFloater::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
 
 
 // virtual
-BOOL LLFloater::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLFloater::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
-    BOOL was_minimized = mMinimized;
-    setMinimized(FALSE);
+    bool was_minimized = mMinimized;
+    setMinimized(false);
     return was_minimized || LLPanel::handleDoubleClick(x, y, mask);
 }
 
@@ -1728,23 +1728,23 @@ void LLFloater::goneFromFront()
 }
 
 // virtual
-void LLFloater::setVisibleAndFrontmost(BOOL take_focus,const LLSD& key)
+void LLFloater::setVisibleAndFrontmost(bool take_focus,const LLSD& key)
 {
     LLUIUsage::instance().logFloater(getInstanceName());
     LLMultiFloater* hostp = getHost();
     if (hostp)
     {
-        hostp->setVisible(TRUE);
+        hostp->setVisible(true);
         hostp->setFrontmost(take_focus);
     }
     else
     {
-        setVisible(TRUE);
+        setVisible(true);
         setFrontmost(take_focus);
     }
 }
 
-void LLFloater::setFrontmost(BOOL take_focus, BOOL restore)
+void LLFloater::setFrontmost(bool take_focus, bool restore)
 {
     LLMultiFloater* hostp = getHost();
     if (hostp)
@@ -1779,7 +1779,7 @@ void LLFloater::setCanDock(bool b)
         }
         else
         {
-            mButtonsEnabled[BUTTON_DOCK] = FALSE;
+            mButtonsEnabled[BUTTON_DOCK] = false;
         }
     }
     updateTitleButtons();
@@ -1794,7 +1794,7 @@ void LLFloater::setDocked(bool docked, bool pop_on_undock)
 
         if (mDocked)
         {
-            setMinimized(FALSE);
+            setMinimized(false);
             mPositioning = LLFloaterEnums::POSITIONING_RELATIVE;
         }
 
@@ -1836,9 +1836,9 @@ void LLFloater::onClickTearOff(LLFloater* self)
             new_rect.setLeftTopAndSize(host_floater->getRect().mLeft + 5, host_floater->getRect().mTop - floater_header_size - 5, self->getRect().getWidth(), self->getRect().getHeight());
             self->setRect(new_rect);
         }
-        gFloaterView->adjustToFitScreen(self, FALSE);
+        gFloaterView->adjustToFitScreen(self, false);
         // give focus to new window to keep continuity for the user
-        self->setFocus(TRUE);
+        self->setFocus(true);
         self->setTornOff(true);
     }
     else  //Attach to parent.
@@ -1852,7 +1852,7 @@ void LLFloater::onClickTearOff(LLFloater* self)
                 self->mPosition = LLCoordGL(screen_rect.getCenterX(), screen_rect.getCenterY()).convert();
                 self->storeRectControl();
             }
-            self->setMinimized(FALSE); // to reenable minimize button if it was minimized
+            self->setMinimized(false); // to reenable minimize button if it was minimized
             new_host->showFloater(self);
             // make sure host is visible
             new_host->openFloater(new_host->getKey());
@@ -1984,7 +1984,7 @@ void LLFloater::draw()
                 const LLFontGL* font = LLFontGL::getFontSansSerif();
                 LLRect r = getRect();
                 gl_rect_2d_offset_local(0, r.getHeight(), r.getWidth(), r.getHeight() - font->getLineHeight() - 1,
-                    titlebar_focus_color % alpha, 0, TRUE);
+                    titlebar_focus_color % alpha, 0, true);
             }
         }
     }
@@ -1997,13 +1997,13 @@ void LLFloater::draw()
         {
             LLFocusableElement* focus_ctrl = gFocusMgr.getKeyboardFocus();
             // is this button a direct descendent and not a nested widget (e.g. checkbox)?
-            BOOL focus_is_child_button = dynamic_cast<LLButton*>(focus_ctrl) != NULL && dynamic_cast<LLButton*>(focus_ctrl)->getParent() == this;
+            bool focus_is_child_button = dynamic_cast<LLButton*>(focus_ctrl) != NULL && dynamic_cast<LLButton*>(focus_ctrl)->getParent() == this;
             // only enable default button when current focus is not a button
             getDefaultButton()->setBorderEnabled(!focus_is_child_button);
         }
         else
         {
-            getDefaultButton()->setBorderEnabled(FALSE);
+            getDefaultButton()->setBorderEnabled(false);
         }
     }
     if (isMinimized())
@@ -2012,7 +2012,7 @@ void LLFloater::draw()
         {
             drawChild(mButtons[i]);
         }
-        drawChild(mDragHandle, 0, 0, TRUE);
+        drawChild(mDragHandle, 0, 0, true);
     }
     else
     {
@@ -2027,7 +2027,7 @@ void LLFloater::draw()
         LLFloater* old_host = mLastHostHandle.get();
         if (!old_host)
         {
-            setCanTearOff(FALSE);
+            setCanTearOff(false);
         }
     }
 }
@@ -2076,14 +2076,14 @@ void LLFloater::updateTransparency(ETypeTransparency transparency_type)
     updateTransparency(this, transparency_type);
 }
 
-void    LLFloater::setCanMinimize(BOOL can_minimize)
+void    LLFloater::setCanMinimize(bool can_minimize)
 {
     // if removing minimize/restore button programmatically,
     // go ahead and unminimize floater
     mCanMinimize = can_minimize;
     if (!can_minimize)
     {
-        setMinimized(FALSE);
+        setMinimized(false);
     }
 
     mButtonsEnabled[BUTTON_MINIMIZE] = can_minimize && !isMinimized();
@@ -2092,7 +2092,7 @@ void    LLFloater::setCanMinimize(BOOL can_minimize)
     updateTitleButtons();
 }
 
-void    LLFloater::setCanClose(BOOL can_close)
+void    LLFloater::setCanClose(bool can_close)
 {
     mCanClose = can_close;
     mButtonsEnabled[BUTTON_CLOSE] = can_close;
@@ -2100,7 +2100,7 @@ void    LLFloater::setCanClose(BOOL can_close)
     updateTitleButtons();
 }
 
-void    LLFloater::setCanTearOff(BOOL can_tear_off)
+void    LLFloater::setCanTearOff(bool can_tear_off)
 {
     mCanTearOff = can_tear_off;
     mButtonsEnabled[BUTTON_TEAR_OFF] = mCanTearOff && !mHostHandle.isDead();
@@ -2109,23 +2109,23 @@ void    LLFloater::setCanTearOff(BOOL can_tear_off)
 }
 
 
-void LLFloater::setCanResize(BOOL can_resize)
+void LLFloater::setCanResize(bool can_resize)
 {
     mResizable = can_resize;
     enableResizeCtrls(can_resize);
 }
 
-void LLFloater::setCanDrag(BOOL can_drag)
+void LLFloater::setCanDrag(bool can_drag)
 {
     // if we delete drag handle, we no longer have access to the floater's title
     // so just enable/disable it
     if (!can_drag && mDragHandle->getEnabled())
     {
-        mDragHandle->setEnabled(FALSE);
+        mDragHandle->setEnabled(false);
     }
     else if (can_drag && !mDragHandle->getEnabled())
     {
-        mDragHandle->setEnabled(TRUE);
+        mDragHandle->setEnabled(true);
     }
 }
 
@@ -2203,13 +2203,13 @@ void LLFloater::updateTitleButtons()
                     buttons_rect.mLeft = btn_rect.mLeft;
             }
             mButtons[i]->setRect(btn_rect);
-            mButtons[i]->setVisible(TRUE);
+            mButtons[i]->setVisible(true);
             // the restore button should have a tab stop so that it takes action when you Ctrl-Tab to a minimized floater
             mButtons[i]->setTabStop(i == BUTTON_RESTORE);
         }
         else
         {
-            mButtons[i]->setVisible(FALSE);
+            mButtons[i]->setVisible(false);
         }
     }
     if (mDragHandle)
@@ -2403,7 +2403,7 @@ static LLDefaultChildRegistry::Register<LLFloaterView> r("floater_view");
 
 LLFloaterView::LLFloaterView (const Params& p)
 :   LLUICtrl (p),
-    mFocusCycleMode(FALSE),
+    mFocusCycleMode(false),
     mMinimizePositionVOffset(0),
     mSnapOffsetBottom(0),
     mSnapOffsetRight(0)
@@ -2412,7 +2412,7 @@ LLFloaterView::LLFloaterView (const Params& p)
 }
 
 // By default, adjust vertical.
-void LLFloaterView::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLFloaterView::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLView::reshape(width, height, called_from_parent);
 
@@ -2482,7 +2482,7 @@ void LLFloaterView::restoreAll()
         LLFloater* floaterp = dynamic_cast<LLFloater*>(child);
         if (floaterp)
         {
-            floaterp->setMinimized(FALSE);
+            floaterp->setMinimized(false);
         }
     }
 
@@ -2557,7 +2557,7 @@ LLRect LLFloaterView::findNeighboringPosition( LLFloater* reference_floater, LLF
 }
 
 
-void LLFloaterView::bringToFront(LLFloater* child, BOOL give_focus, BOOL restore)
+void LLFloaterView::bringToFront(LLFloater* child, bool give_focus, bool restore)
 {
     if (!child)
         return;
@@ -2567,7 +2567,7 @@ void LLFloaterView::bringToFront(LLFloater* child, BOOL give_focus, BOOL restore
     {
         if (give_focus && child->canFocusStealFrontmost() && !gFocusMgr.childHasKeyboardFocus(child))
         {
-            child->setFocus(TRUE);
+            child->setFocus(true);
         }
         return;
     }
@@ -2625,7 +2625,7 @@ void LLFloaterView::bringToFront(LLFloater* child, BOOL give_focus, BOOL restore
         // always unminimize dependee, but allow dependents to stay minimized
         if (!floaterp->isDependent())
         {
-            floaterp->setMinimized(FALSE);
+            floaterp->setMinimized(false);
         }
     }
     floaters_to_move.clear();
@@ -2650,12 +2650,12 @@ void LLFloaterView::bringToFront(LLFloater* child, BOOL give_focus, BOOL restore
 
     if(restore)
     {
-        child->setMinimized(FALSE);
+        child->setMinimized(false);
     }
 
     if (give_focus && !gFocusMgr.childHasKeyboardFocus(child))
     {
-        child->setFocus(TRUE);
+        child->setFocus(true);
         // floater did not take focus, so relinquish focus to world
         if (!child->hasFocus())
         {
@@ -2676,7 +2676,7 @@ void LLFloaterView::highlightFocusedFloater()
             continue;
         }
 
-        BOOL floater_or_dependent_has_focus = gFocusMgr.childHasKeyboardFocus(floater);
+        bool floater_or_dependent_has_focus = gFocusMgr.childHasKeyboardFocus(floater);
         for(LLFloater::handle_set_iter_t dependent_it = floater->mDependents.begin();
             dependent_it != floater->mDependents.end();
             ++dependent_it)
@@ -2684,7 +2684,7 @@ void LLFloaterView::highlightFocusedFloater()
             LLFloater* dependent_floaterp = dependent_it->get();
             if (dependent_floaterp && gFocusMgr.childHasKeyboardFocus(dependent_floaterp))
             {
-                floater_or_dependent_has_focus = TRUE;
+                floater_or_dependent_has_focus = true;
             }
         }
 
@@ -2730,7 +2730,7 @@ void LLFloaterView::unhighlightFocusedFloater()
     {
         LLFloater *floater = (LLFloater *)(*child_it);
 
-        floater->setForeground(FALSE);
+        floater->setForeground(false);
     }
 }
 
@@ -2739,7 +2739,7 @@ void LLFloaterView::focusFrontFloater()
     LLFloater* floaterp = getFrontmost();
     if (floaterp)
     {
-        floaterp->setFocus(TRUE);
+        floaterp->setFocus(true);
     }
 }
 
@@ -2759,7 +2759,7 @@ void LLFloaterView::getMinimizePosition(S32 *left, S32 *bottom)
         row -= floater_header_size ) //loop rows
         {
 
-            bool foundGap = TRUE;
+            bool foundGap = true;
             for(child_list_const_iter_t child_it = getChildList()->begin();
                 child_it != getChildList()->end();
                 ++child_it) //loop floaters
@@ -2776,7 +2776,7 @@ void LLFloaterView::getMinimizePosition(S32 *left, S32 *bottom)
                     {
                         // needs the check for off grid. can't drag,
                         // but window resize makes them off
-                        foundGap = FALSE;
+                        foundGap = false;
                         break;
                     }
                 }
@@ -2878,7 +2878,7 @@ void LLFloaterView::showHiddenFloaters()
     mHiddenFloaters.clear();
 }
 
-BOOL LLFloaterView::allChildrenClosed()
+bool LLFloaterView::allChildrenClosed()
 {
     // see if there are any visible floaters (some floaters "close"
     // by setting themselves invisible)
@@ -2912,7 +2912,7 @@ void LLFloaterView::refresh()
     LLRect snap_rect = getSnapRect();
     if (snap_rect != mLastSnapRect)
     {
-        reshape(getRect().getWidth(), getRect().getHeight(), TRUE);
+        reshape(getRect().getWidth(), getRect().getHeight(), true);
     }
 
     // Constrain children to be entirely on the screen
@@ -2927,7 +2927,7 @@ void LLFloaterView::refresh()
     }
 }
 
-void LLFloaterView::adjustToFitScreen(LLFloater* floater, BOOL allow_partial_outside, BOOL snap_in_toolbars/* = false*/)
+void LLFloaterView::adjustToFitScreen(LLFloater* floater, bool allow_partial_outside, bool snap_in_toolbars/* = false*/)
 {
     if (floater->getParent() != this)
     {
@@ -3099,7 +3099,7 @@ void LLFloaterView::syncFloaterTabOrder()
 
         if( !gFocusMgr.childHasKeyboardFocus( modal_dialog ) )
         {
-            modal_dialog->setFocus(TRUE);
+            modal_dialog->setFocus(true);
         }
 
         if( !gFocusMgr.childHasMouseCapture( modal_dialog ) )
@@ -3131,7 +3131,7 @@ void LLFloaterView::syncFloaterTabOrder()
                         }
                     }
 
-                    bringToFront(floaterp, FALSE);
+                    bringToFront(floaterp, false);
 
                     // Restore top floaters
                     if (!listTop.empty())
@@ -3183,7 +3183,7 @@ S32 LLFloaterView::getZOrder(LLFloater* child)
     return rv;
 }
 
-void LLFloaterView::pushVisibleAll(BOOL visible, const skip_list_t& skip_list)
+void LLFloaterView::pushVisibleAll(bool visible, const skip_list_t& skip_list)
 {
     for (child_list_const_iter_t child_iter = getChildList()->begin();
          child_iter != getChildList()->end(); ++child_iter)
@@ -3397,7 +3397,7 @@ bool LLFloater::initFloaterXML(LLXMLNodePtr node, LLView *parent, const std::str
             setupParamsForExport(output_params, parent);
             output_node->setName(node->getName()->mString);
             parser.writeXUI(output_node, output_params, LLInitParam::default_parse_rules(), &default_params);
-            return TRUE;
+            return true;
         }
 
         LLUICtrlFactory::instance().pushFileName(xml_filename);
@@ -3406,7 +3406,7 @@ bool LLFloater::initFloaterXML(LLXMLNodePtr node, LLView *parent, const std::str
         {
             LL_WARNS() << "Couldn't parse panel from: " << xml_filename << LL_ENDL;
 
-            return FALSE;
+            return false;
         }
 
         Params referenced_params;
@@ -3476,7 +3476,7 @@ bool LLFloater::initFloaterXML(LLXMLNodePtr node, LLView *parent, const std::str
         setRect(rect);
     }
 
-    BOOL result;
+    bool result;
     result = postBuild();
 
     if (!result)
@@ -3485,7 +3485,7 @@ bool LLFloater::initFloaterXML(LLXMLNodePtr node, LLView *parent, const std::str
     }
 
     applyRectControl(); // If we have a saved rect control, apply it
-    gFloaterView->adjustToFitScreen(this, FALSE); // Floaters loaded from XML should all fit on screen
+    gFloaterView->adjustToFitScreen(this, false); // Floaters loaded from XML should all fit on screen
 
     moveResizeHandlesToFront();
 
diff --git a/indra/llui/llfloater.h b/indra/llui/llfloater.h
index dcc9af4c6e..3d75c42f60 100644
--- a/indra/llui/llfloater.h
+++ b/indra/llui/llfloater.h
@@ -46,20 +46,20 @@ class LLMultiFloater;
 class LLFloater;
 
 
-const BOOL RESIZE_YES = TRUE;
-const BOOL RESIZE_NO = FALSE;
+const bool RESIZE_YES = true;
+const bool RESIZE_NO = false;
 
-const BOOL DRAG_ON_TOP = FALSE;
-const BOOL DRAG_ON_LEFT = TRUE;
+const bool DRAG_ON_TOP = false;
+const bool DRAG_ON_LEFT = true;
 
-const BOOL MINIMIZE_YES = TRUE;
-const BOOL MINIMIZE_NO = FALSE;
+const bool MINIMIZE_YES = true;
+const bool MINIMIZE_NO = false;
 
-const BOOL CLOSE_YES = TRUE;
-const BOOL CLOSE_NO = FALSE;
+const bool CLOSE_YES = true;
+const bool CLOSE_NO = false;
 
-const BOOL ADJUST_VERTICAL_YES = TRUE;
-const BOOL ADJUST_VERTICAL_NO = FALSE;
+const bool ADJUST_VERTICAL_YES = true;
+const bool ADJUST_VERTICAL_NO = false;
 
 const F32 CONTEXT_CONE_IN_ALPHA = 0.f;
 const F32 CONTEXT_CONE_OUT_ALPHA = 1.f;
@@ -222,13 +222,13 @@ public:
     bool initFloaterXML(LLXMLNodePtr node, LLView *parent, const std::string& filename, LLXMLNodePtr output_node = NULL);
 
     /*virtual*/ void handleReshape(const LLRect& new_rect, bool by_user = false);
-    /*virtual*/ BOOL canSnapTo(const LLView* other_view);
+    /*virtual*/ bool canSnapTo(const LLView* other_view);
     /*virtual*/ void setSnappedTo(const LLView* snap_view);
-    /*virtual*/ void setFocus( BOOL b );
-    /*virtual*/ void setIsChrome(BOOL is_chrome);
+    /*virtual*/ void setFocus( bool b );
+    /*virtual*/ void setIsChrome(bool is_chrome);
     /*virtual*/ void setRect(const LLRect &rect);
-                void setIsSingleInstance(BOOL is_single_instance);
-                BOOL getIsSingleInstance() { return mSingleInstance; }
+                void setIsSingleInstance(bool is_single_instance);
+                bool getIsSingleInstance() { return mSingleInstance; }
 
     void            initFloater(const Params& p);
 
@@ -240,7 +240,7 @@ public:
     // Close the floater or its host. Use when hidding or toggling a floater instance.
     virtual void    closeHostedFloater();
 
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
     /*virtual*/ void translate(S32 x, S32 y);
 
     // Release keyboard and mouse focus
@@ -258,14 +258,14 @@ public:
     std::string     getTitle() const;
     void            setShortTitle( const std::string& short_title );
     std::string     getShortTitle() const;
-    virtual void    setMinimized(BOOL b);
+    virtual void    setMinimized(bool b);
     void            moveResizeHandlesToFront();
-    void            addDependentFloater(LLFloater* dependent, BOOL reposition = TRUE, BOOL resize = FALSE);
-    void            addDependentFloater(LLHandle<LLFloater> dependent_handle, BOOL reposition = TRUE, BOOL resize = FALSE);
+    void            addDependentFloater(LLFloater* dependent, bool reposition = true, bool resize = false);
+    void            addDependentFloater(LLHandle<LLFloater> dependent_handle, bool reposition = true, bool resize = false);
     LLFloater*      getDependee() { return (LLFloater*)mDependeeHandle.get(); }
     void            removeDependentFloater(LLFloater* dependent);
     void            fitWithDependentsOnScreen(const LLRect& left, const LLRect& bottom, const LLRect& right, const LLRect& constraint, S32 min_overlap_pixels);
-    BOOL            isMinimized() const             { return mMinimized; }
+    bool            isMinimized() const             { return mMinimized; }
     /// isShown() differs from getVisible() in that isShown() also considers
     /// isMinimized(). isShown() is true only if visible and not minimized.
     bool            isShown() const;
@@ -274,17 +274,17 @@ public:
     static bool     isShown(const LLFloater* floater);
     static bool     isVisible(const LLFloater* floater);
     static bool     isMinimized(const LLFloater* floater);
-    BOOL            isFirstLook() { return mFirstLook; } // EXT-2653: This function is necessary to prevent overlapping for secondary showed toasts
-    virtual BOOL    isFrontmost();
-    BOOL            isDependent()                   { return !mDependeeHandle.isDead(); }
-    void            setCanMinimize(BOOL can_minimize);
-    void            setCanClose(BOOL can_close);
-    void            setCanTearOff(BOOL can_tear_off);
-    virtual void    setCanResize(BOOL can_resize);
-    void            setCanDrag(BOOL can_drag);
+    bool            isFirstLook() { return mFirstLook; } // EXT-2653: This function is necessary to prevent overlapping for secondary showed toasts
+    virtual bool    isFrontmost();
+    bool            isDependent()                   { return !mDependeeHandle.isDead(); }
+    void            setCanMinimize(bool can_minimize);
+    void            setCanClose(bool can_close);
+    void            setCanTearOff(bool can_tear_off);
+    virtual void    setCanResize(bool can_resize);
+    void            setCanDrag(bool can_drag);
     bool            getCanDrag();
     void            setHost(LLMultiFloater* host);
-    BOOL            isResizable() const             { return mResizable; }
+    bool            isResizable() const             { return mResizable; }
     void            setResizeLimits( S32 min_width, S32 min_height );
     void            getResizeLimits( S32* min_width, S32* min_height ) { *min_width = mMinWidth; *min_height = mMinHeight; }
 
@@ -298,13 +298,13 @@ public:
     S32             getMinHeight() const{ return mMinHeight; }
     S32             getHeaderHeight() const { return mHeaderHeight; }
 
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleDoubleClick(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMiddleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleDoubleClick(S32 x, S32 y, MASK mask);
+    virtual bool    handleMiddleMouseDown(S32 x, S32 y, MASK mask);
 
-    virtual BOOL    handleScrollWheel(S32 x, S32 y, S32 mask);
+    virtual bool    handleScrollWheel(S32 x, S32 y, S32 mask);
 
     virtual void    draw();
     virtual void    drawShadow(LLPanel* panel);
@@ -314,19 +314,19 @@ public:
 
     // This cannot be "const" until all derived floater canClose()
     // methods are const as well.  JC
-    virtual BOOL    canClose() { return TRUE; }
+    virtual bool    canClose() { return true; }
 
-    /*virtual*/ void setVisible(BOOL visible); // do not override
-    /*virtual*/ void onVisibilityChange ( BOOL new_visibility ); // do not override
+    /*virtual*/ void setVisible(bool visible); // do not override
+    /*virtual*/ void onVisibilityChange ( bool new_visibility ); // do not override
 
     bool            canFocusStealFrontmost() const { return mFocusStealsFrontmost; }
     void            setFocusStealsFrontmost(bool wants_frontmost) { mFocusStealsFrontmost = wants_frontmost; }
 
-    void            setFrontmost(BOOL take_focus = TRUE, BOOL restore = TRUE);
-     virtual void   setVisibleAndFrontmost(BOOL take_focus=TRUE, const LLSD& key = LLSD());
+    void            setFrontmost(bool take_focus = true, bool restore = true);
+     virtual void   setVisibleAndFrontmost(bool take_focus = true, const LLSD& key = LLSD());
 
     // Defaults to false.
-    virtual BOOL    canSaveAs() const { return FALSE; }
+    virtual bool    canSaveAs() const { return false; }
 
     virtual void    saveAs() {}
 
@@ -400,8 +400,8 @@ protected:
     void            setExpandedRect(const LLRect& rect) { mExpandedRect = rect; } // size when not minimized
     const LLRect&   getExpandedRect() const { return mExpandedRect; }
 
-    void            setAutoFocus(BOOL focus) { mAutoFocus = focus; } // whether to automatically take focus when opened
-    BOOL            getAutoFocus() const { return mAutoFocus; }
+    void            setAutoFocus(bool focus) { mAutoFocus = focus; } // whether to automatically take focus when opened
+    bool            getAutoFocus() const { return mAutoFocus; }
     LLDragHandle*   getDragHandle() const { return mDragHandle; }
 
     void            destroy(); // Don't call this directly.  You probably want to call closeFloater()
@@ -420,7 +420,7 @@ protected:
                                     F32 contex_cone_out_alpha = CONTEXT_CONE_OUT_ALPHA);
 
 private:
-    void            setForeground(BOOL b);  // called only by floaterview
+    void            setForeground(bool b);  // called only by floaterview
     void            cleanupHandles(); // remove handles to dead floaters
     void            createMinimizeButton();
     void            buildButtons(const Params& p);
@@ -437,7 +437,7 @@ private:
      */
     static std::string  getButtonTooltip(const Params& p, EFloaterButton e, bool is_chrome);
 
-    BOOL            offerClickToButton(S32 x, S32 y, MASK mask, EFloaterButton index);
+    bool            offerClickToButton(S32 x, S32 y, MASK mask, EFloaterButton index);
     void            addResizeCtrls();
     void            layoutResizeCtrls();
     void            addDragHandle();
@@ -483,18 +483,18 @@ private:
     LLUIString      mTitle;
     LLUIString      mShortTitle;
 
-    BOOL            mSingleInstance;      // TRUE if there is only ever one instance of the floater
+    bool            mSingleInstance;      // true if there is only ever one instance of the floater
     bool            mReuseInstance;       // true if we want to hide the floater when we close it instead of destroying it
     bool            mIsReuseInitialized;  // true if mReuseInstance already set from parameters
     std::string     mInstanceName;        // Store the instance name so we can remove ourselves from the list
 
-    BOOL            mCanTearOff;
-    BOOL            mCanMinimize;
-    BOOL            mCanClose;
-    bool            mFocusStealsFrontmost = true;   // FALSE if we don't want the currently focused floater to cover this floater without user interaction
-    BOOL            mDragOnLeft;
-    BOOL            mResizable;
-    BOOL            mAutoClose;
+    bool            mCanTearOff;
+    bool            mCanMinimize;
+    bool            mCanClose;
+    bool            mFocusStealsFrontmost = true;   // false if we don't want the currently focused floater to cover this floater without user interaction
+    bool            mDragOnLeft;
+    bool            mResizable;
+    bool            mAutoClose;
 
     LLFloaterEnums::EOpenPositioning    mPositioning;
     LLCoordFloater  mPosition;
@@ -504,12 +504,12 @@ private:
     S32             mHeaderHeight;      // height in pixels of header for title, drag bar
     S32             mLegacyHeaderHeight;// HACK see initFloaterXML()
 
-    BOOL            mMinimized;
-    BOOL            mForeground;
+    bool            mMinimized;
+    bool            mForeground;
     LLHandle<LLFloater> mDependeeHandle;
 
 
-    BOOL            mFirstLook;         // TRUE if the _next_ time this floater is visible will be the first time in the session that it is visible.
+    bool            mFirstLook;         // true if the _next_ time this floater is visible will be the first time in the session that it is visible.
 
     typedef std::set<LLHandle<LLFloater> > handle_set_t;
     typedef std::set<LLHandle<LLFloater> >::iterator handle_set_iter_t;
@@ -518,7 +518,7 @@ private:
 
     bool            mButtonsEnabled[BUTTON_COUNT];
     F32             mButtonScale;
-    BOOL            mAutoFocus;
+    bool            mAutoFocus;
     LLHandle<LLFloater> mSnappedTo;
 
     LLHandle<LLFloater> mHostHandle;
@@ -529,7 +529,7 @@ private:
     bool            mTornOff;
 
     static LLMultiFloater* sHostp;
-    static BOOL     sQuitting;
+    static bool     sQuitting;
     static std::string  sButtonNames[BUTTON_COUNT];
     static std::string  sButtonToolTips[BUTTON_COUNT];
     static std::string  sButtonToolTipsIndex[BUTTON_COUNT];
@@ -537,7 +537,7 @@ private:
     typedef void(*click_callback)(LLFloater*);
     static click_callback sButtonCallbacks[BUTTON_COUNT];
 
-    BOOL            mHasBeenDraggedWhileMinimized;
+    bool            mHasBeenDraggedWhileMinimized;
     S32             mPreviousMinimizedBottom;
     S32             mPreviousMinimizedLeft;
 
@@ -563,7 +563,7 @@ protected:
 
 public:
 
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
     /*virtual*/ void draw();
     /*virtual*/ LLRect getSnapRect() const;
     /*virtual*/ void refresh();
@@ -571,25 +571,25 @@ public:
     LLRect          findNeighboringPosition( LLFloater* reference_floater, LLFloater* neighbor );
 
     // Given a child of gFloaterView, make sure this view can fit entirely onscreen.
-    void            adjustToFitScreen(LLFloater* floater, BOOL allow_partial_outside, BOOL snap_in_toolbars = false);
+    void            adjustToFitScreen(LLFloater* floater, bool allow_partial_outside, bool snap_in_toolbars = false);
 
     void            setMinimizePositionVerticalOffset(S32 offset) { mMinimizePositionVOffset = offset; }
     void            getMinimizePosition( S32 *left, S32 *bottom);
     void            restoreAll();       // un-minimize all floaters
     typedef std::set<LLView*> skip_list_t;
-    void pushVisibleAll(BOOL visible, const skip_list_t& skip_list = skip_list_t());
+    void pushVisibleAll(bool visible, const skip_list_t& skip_list = skip_list_t());
     void popVisibleAll(const skip_list_t& skip_list = skip_list_t());
 
-    void            setCycleMode(BOOL mode) { mFocusCycleMode = mode; }
-    BOOL            getCycleMode() const { return mFocusCycleMode; }
-    void            bringToFront( LLFloater* child, BOOL give_focus = TRUE, BOOL restore = TRUE );
+    void            setCycleMode(bool mode) { mFocusCycleMode = mode; }
+    bool            getCycleMode() const { return mFocusCycleMode; }
+    void            bringToFront( LLFloater* child, bool give_focus = true, bool restore = true );
     void            highlightFocusedFloater();
     void            unhighlightFocusedFloater();
     void            focusFrontFloater();
     void            destroyAllChildren();
     // attempt to close all floaters
     void            closeAllChildren(bool app_quitting);
-    BOOL            allChildrenClosed();
+    bool            allChildrenClosed();
     void            shiftFloaters(S32 x_offset, S32 y_offset);
 
     void            hideAllFloaters();
@@ -620,7 +620,7 @@ private:
     LLRect              mToolbarBottomRect;
     LLRect              mToolbarRightRect;
     LLHandle<LLView>    mSnapView;
-    BOOL            mFocusCycleMode;
+    bool            mFocusCycleMode;
     S32             mSnapOffsetBottom;
     S32             mSnapOffsetRight;
     S32             mMinimizePositionVOffset;
diff --git a/indra/llui/llfloaterreg.cpp b/indra/llui/llfloaterreg.cpp
index 989ce12d09..fd5a370bc3 100644
--- a/indra/llui/llfloaterreg.cpp
+++ b/indra/llui/llfloaterreg.cpp
@@ -248,7 +248,7 @@ LLFloaterReg::const_instance_list_t& LLFloaterReg::getFloaterList(const std::str
 // Visibility Management
 
 //static
-LLFloater* LLFloaterReg::showInstance(const std::string& name, const LLSD& key, BOOL focus)
+LLFloater* LLFloaterReg::showInstance(const std::string& name, const LLSD& key, bool focus)
 {
     if( sBlockShowFloaters
             // see EXT-7090
@@ -259,7 +259,7 @@ LLFloater* LLFloaterReg::showInstance(const std::string& name, const LLSD& key,
     {
         instance->openFloater(key);
         if (focus)
-            instance->setFocus(TRUE);
+            instance->setFocus(true);
     }
     return instance;
 }
@@ -281,15 +281,15 @@ bool LLFloaterReg::hideInstance(const std::string& name, const LLSD& key)
 bool LLFloaterReg::toggleInstance(const std::string& name, const LLSD& key)
 {
     LLFloater* instance = findInstance(name, key);
-    if (LLFloater::isShown(instance))
+    if (instance && instance->isShown())
     {
         instance->closeHostedFloater();
         return false;
     }
-    else
-    {
-        return showInstance(name, key, TRUE) ? true : false;
-    }
+
+    instance = showInstance(name, key, true);
+
+    return instance != nullptr;
 }
 
 //static
@@ -310,7 +310,7 @@ void LLFloaterReg::showInitialVisibleInstances()
         std::string controlname = getVisibilityControlName(name);
         if (LLFloater::getControlGroup()->controlExists(controlname))
         {
-            BOOL isvis = LLFloater::getControlGroup()->getBOOL(controlname);
+            bool isvis = LLFloater::getControlGroup()->getBOOL(controlname);
             if (isvis)
             {
                 showInstance(name, LLSD()); // keyed floaters shouldn't set save_vis to true
@@ -332,7 +332,7 @@ void LLFloaterReg::hideVisibleInstances(const std::set<std::string>& exceptions)
         for (instance_list_t::iterator iter = list.begin(); iter != list.end(); ++iter)
         {
             LLFloater* floater = *iter;
-            floater->pushVisible(FALSE);
+            floater->pushVisible(false);
         }
     }
 }
@@ -409,7 +409,7 @@ std::string LLFloaterReg::getBaseControlName(const std::string& name)
 std::string LLFloaterReg::declareVisibilityControl(const std::string& name)
 {
     std::string controlname = getVisibilityControlName(name);
-    LLFloater::getControlGroup()->declareBOOL(controlname, FALSE,
+    LLFloater::getControlGroup()->declareBOOL(controlname, false,
                                                  llformat("Window Visibility for %s", name.c_str()),
                                                  LLControlVariable::PERSIST_NONDFT);
     return controlname;
@@ -419,7 +419,7 @@ std::string LLFloaterReg::declareVisibilityControl(const std::string& name)
 std::string LLFloaterReg::declareDockStateControl(const std::string& name)
 {
     std::string controlname = getDockStateControlName(name);
-    LLFloater::getControlGroup()->declareBOOL(controlname, TRUE,
+    LLFloater::getControlGroup()->declareBOOL(controlname, true,
                                                  llformat("Window Docking state for %s", name.c_str()),
                                                  LLControlVariable::PERSIST_NONDFT);
     return controlname;
@@ -492,7 +492,7 @@ void LLFloaterReg::toggleInstanceOrBringToFront(const LLSD& sdname, const LLSD&
     {
         if (host->isMinimized() || !host->isShown() || !host->isFrontmost())
         {
-            host->setMinimized(FALSE);
+            host->setMinimized(false);
             instance->openFloater(key);
             instance->setVisibleAndFrontmost(true, key);
         }
@@ -500,7 +500,7 @@ void LLFloaterReg::toggleInstanceOrBringToFront(const LLSD& sdname, const LLSD&
         {
             instance->openFloater(key);
             instance->setVisibleAndFrontmost(true, key);
-            instance->setFocus(TRUE);
+            instance->setFocus(true);
         }
         else
         {
@@ -511,7 +511,7 @@ void LLFloaterReg::toggleInstanceOrBringToFront(const LLSD& sdname, const LLSD&
     {
         if (instance->isMinimized())
         {
-            instance->setMinimized(FALSE);
+            instance->setMinimized(false);
             instance->setVisibleAndFrontmost(true, key);
         }
         else if (!instance->isShown())
@@ -552,7 +552,7 @@ void LLFloaterReg::showInstanceOrBringToFront(const LLSD& sdname, const LLSD& ke
     {
         if (host->isMinimized() || !host->isShown() || !host->isFrontmost())
         {
-            host->setMinimized(FALSE);
+            host->setMinimized(false);
             instance->openFloater(key);
             instance->setVisibleAndFrontmost(true, key);
         }
@@ -560,14 +560,14 @@ void LLFloaterReg::showInstanceOrBringToFront(const LLSD& sdname, const LLSD& ke
         {
             instance->openFloater(key);
             instance->setVisibleAndFrontmost(true, key);
-            instance->setFocus(TRUE);
+            instance->setFocus(true);
         }
     }
     else
     {
         if (instance->isMinimized())
         {
-            instance->setMinimized(FALSE);
+            instance->setMinimized(false);
             instance->setVisibleAndFrontmost(true, key);
         }
         else if (!instance->isShown())
diff --git a/indra/llui/llfloaterreg.h b/indra/llui/llfloaterreg.h
index 43f3f7b170..6a642cbb27 100644
--- a/indra/llui/llfloaterreg.h
+++ b/indra/llui/llfloaterreg.h
@@ -102,7 +102,7 @@ public:
 
     // Visibility Management
     // return NULL if instance not found or can't create instance (no builder)
-    static LLFloater* showInstance(const std::string& name, const LLSD& key = LLSD(), BOOL focus = FALSE);
+    static LLFloater* showInstance(const std::string& name, const LLSD& key = LLSD(), bool focus = false);
     // Close a floater (may destroy or set invisible)
     // return false if can't find instance
     static bool hideInstance(const std::string& name, const LLSD& key = LLSD());
@@ -145,7 +145,7 @@ public:
     }
 
     template <class T>
-    static T* showTypedInstance(const std::string& name, const LLSD& key = LLSD(), BOOL focus = FALSE)
+    static T* showTypedInstance(const std::string& name, const LLSD& key = LLSD(), bool focus = false)
     {
         return dynamic_cast<T*>(showInstance(name, key, focus));
     }
diff --git a/indra/llui/llflyoutbutton.cpp b/indra/llui/llflyoutbutton.cpp
index 1d529d09d3..2e198e8dbc 100644
--- a/indra/llui/llflyoutbutton.cpp
+++ b/indra/llui/llflyoutbutton.cpp
@@ -35,7 +35,7 @@ const S32 FLYOUT_BUTTON_ARROW_WIDTH = 24;
 
 LLFlyoutButton::LLFlyoutButton(const Params& p)
 :   LLComboBox(p),
-    mToggleState(FALSE),
+    mToggleState(false),
     mActionButton(NULL)
 {
     // Always use text box
@@ -69,7 +69,7 @@ void LLFlyoutButton::draw()
     LLComboBox::draw();
 }
 
-void LLFlyoutButton::setToggleState(BOOL state)
+void LLFlyoutButton::setToggleState(bool state)
 {
     mToggleState = state;
 }
diff --git a/indra/llui/llflyoutbutton.h b/indra/llui/llflyoutbutton.h
index c217d14ff1..7a49501318 100644
--- a/indra/llui/llflyoutbutton.h
+++ b/indra/llui/llflyoutbutton.h
@@ -56,13 +56,13 @@ protected:
 public:
     virtual void    draw();
 
-    void setToggleState(BOOL state);
+    void setToggleState(bool state);
 
     void onActionButtonClick(const LLSD& data);
 
 protected:
     LLButton*               mActionButton;
-    BOOL                    mToggleState;
+    bool                    mToggleState;
 };
 
 #endif // LL_LLFLYOUTBUTTON_H
diff --git a/indra/llui/llfocusmgr.cpp b/indra/llui/llfocusmgr.cpp
index 5b7525daac..e0e789f730 100644
--- a/indra/llui/llfocusmgr.cpp
+++ b/indra/llui/llfocusmgr.cpp
@@ -41,25 +41,25 @@ LLFocusableElement::LLFocusableElement()
 }
 
 // virtual
-BOOL LLFocusableElement::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLFocusableElement::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
-    return FALSE;
+    return false;
 }
 
 // virtual
-BOOL LLFocusableElement::handleKeyUp(KEY key, MASK mask, BOOL called_from_parent)
+bool LLFocusableElement::handleKeyUp(KEY key, MASK mask, bool called_from_parent)
 {
-    return FALSE;
+    return false;
 }
 
 // virtual
-BOOL LLFocusableElement::handleUnicodeChar(llwchar uni_char, BOOL called_from_parent)
+bool LLFocusableElement::handleUnicodeChar(llwchar uni_char, bool called_from_parent)
 {
-    return FALSE;
+    return false;
 }
 
 // virtual
-BOOL LLFocusableElement::handleUnicodeString(char *uni_str, bool editing, BOOL called_from_parent)
+bool LLFocusableElement::handleUnicodeString(char *uni_str, bool editing, bool called_from_parent)
 {
 	return FALSE;
 }
@@ -102,12 +102,12 @@ void LLFocusableElement::onTopLost()
     if (mTopLostCallback) (*mTopLostCallback)(this);
 }
 
-BOOL LLFocusableElement::hasFocus() const
+bool LLFocusableElement::hasFocus() const
 {
     return gFocusMgr.getKeyboardFocus() == this;
 }
 
-void LLFocusableElement::setFocus(BOOL b)
+void LLFocusableElement::setFocus(bool b)
 {
 }
 
@@ -155,9 +155,9 @@ LLFocusMgr::LLFocusMgr()
     mKeyboardFocus( NULL ),
     mLastKeyboardFocus( NULL ),
     mDefaultKeyboardFocus( NULL ),
-    mKeystrokesOnly(FALSE),
+    mKeystrokesOnly(false),
     mTopCtrl( NULL ),
-    mAppHasFocus(TRUE),   // Macs don't seem to notify us that we've gotten focus, so default to true
+    mAppHasFocus(true),   // Macs don't seem to notify us that we've gotten focus, so default to true
     mImpl(new LLFocusMgr::Impl)
 {
 }
@@ -192,7 +192,7 @@ void LLFocusMgr::releaseFocusIfNeeded( LLView* view )
     LLUI::getInstance()->removePopup(view);
 }
 
-void LLFocusMgr::setKeyboardFocus(LLFocusableElement* new_focus, BOOL lock, BOOL keystrokes_only)
+void LLFocusMgr::setKeyboardFocus(LLFocusableElement* new_focus, bool lock, bool keystrokes_only)
 {
     // notes if keyboard focus is changed again (by onFocusLost/onFocusReceived)
     // making the rest of our processing unnecessary since it will already be
@@ -275,7 +275,7 @@ void LLFocusMgr::setKeyboardFocus(LLFocusableElement* new_focus, BOOL lock, BOOL
         // releasing keyboard focus, move to the default.
         if (mDefaultKeyboardFocus != NULL && mKeyboardFocus == NULL)
         {
-            mDefaultKeyboardFocus->setFocus(TRUE);
+            mDefaultKeyboardFocus->setFocus(true);
         }
 
         LLView* focus_subtree = dynamic_cast<LLView*>(mKeyboardFocus);
@@ -307,23 +307,23 @@ void LLFocusMgr::setKeyboardFocus(LLFocusableElement* new_focus, BOOL lock, BOOL
 }
 
 
-// Returns TRUE is parent or any descedent of parent has keyboard focus.
-BOOL LLFocusMgr::childHasKeyboardFocus(const LLView* parent ) const
+// Returns true is parent or any descedent of parent has keyboard focus.
+bool LLFocusMgr::childHasKeyboardFocus(const LLView* parent ) const
 {
     LLView* focus_view = dynamic_cast<LLView*>(mKeyboardFocus);
     while( focus_view )
     {
         if( focus_view == parent )
         {
-            return TRUE;
+            return true;
         }
         focus_view = focus_view->getParent();
     }
-    return FALSE;
+    return false;
 }
 
-// Returns TRUE is parent or any descedent of parent is the mouse captor.
-BOOL LLFocusMgr::childHasMouseCapture( const LLView* parent ) const
+// Returns true is parent or any descedent of parent is the mouse captor.
+bool LLFocusMgr::childHasMouseCapture( const LLView* parent ) const
 {
     if( mMouseCaptor && dynamic_cast<LLView*>(mMouseCaptor) != NULL )
     {
@@ -332,12 +332,12 @@ BOOL LLFocusMgr::childHasMouseCapture( const LLView* parent ) const
         {
             if( captor_view == parent )
             {
-                return TRUE;
+                return true;
             }
             captor_view = captor_view->getParent();
         }
     }
-    return FALSE;
+    return false;
 }
 
 void LLFocusMgr::removeKeyboardFocusWithoutCallback( const LLFocusableElement* focus )
@@ -406,18 +406,18 @@ void LLFocusMgr::removeMouseCaptureWithoutCallback( const LLMouseHandler* captor
 }
 
 
-BOOL LLFocusMgr::childIsTopCtrl( const LLView* parent ) const
+bool LLFocusMgr::childIsTopCtrl( const LLView* parent ) const
 {
     LLView* top_view = (LLView*)mTopCtrl;
     while( top_view )
     {
         if( top_view == parent )
         {
-            return TRUE;
+            return true;
         }
         top_view = top_view->getParent();
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -477,7 +477,7 @@ void LLFocusMgr::triggerFocusFlash()
     mFocusFlashTimer.reset();
 }
 
-void LLFocusMgr::setAppHasFocus(BOOL focus)
+void LLFocusMgr::setAppHasFocus(bool focus)
 {
     if (!mAppHasFocus && focus)
     {
diff --git a/indra/llui/llfocusmgr.h b/indra/llui/llfocusmgr.h
index c12d52d121..1ca6f50354 100644
--- a/indra/llui/llfocusmgr.h
+++ b/indra/llui/llfocusmgr.h
@@ -45,8 +45,8 @@ public:
     LLFocusableElement();
     virtual ~LLFocusableElement();
 
-    virtual void    setFocus( BOOL b );
-    virtual BOOL    hasFocus() const;
+    virtual void    setFocus( bool b );
+    virtual bool    hasFocus() const;
 
     typedef boost::signals2::signal<void(LLFocusableElement*)> focus_signal_t;
 
@@ -56,10 +56,10 @@ public:
     boost::signals2::connection setTopLostCallback(const focus_signal_t::slot_type& cb);
 
     // These were brought up the hierarchy from LLView so that we don't have to use dynamic_cast when dealing with keyboard focus.
-    virtual BOOL    handleKey(KEY key, MASK mask, BOOL called_from_parent);
-    virtual BOOL    handleKeyUp(KEY key, MASK mask, BOOL called_from_parent);
-    virtual BOOL    handleUnicodeChar(llwchar uni_char, BOOL called_from_parent);
-    virtual BOOL    handleUnicodeString(char *uni_str, bool editing, BOOL called_from_parent);
+    virtual bool    handleKey(KEY key, MASK mask, bool called_from_parent);
+    virtual bool    handleKeyUp(KEY key, MASK mask, bool called_from_parent);
+    virtual bool    handleUnicodeChar(llwchar uni_char, bool called_from_parent);
+    virtual bool    handleUnicodeString(char *uni_str, bool editing, bool called_from_parent);
 
     /**
      * If true this LLFocusableElement wants to receive KEYUP and KEYDOWN messages
@@ -90,23 +90,23 @@ public:
     void            setMouseCapture(LLMouseHandler* new_captor);    // new_captor = NULL to release the mouse.
     LLMouseHandler* getMouseCapture() const { return mMouseCaptor; }
     void            removeMouseCaptureWithoutCallback( const LLMouseHandler* captor );
-    BOOL            childHasMouseCapture( const LLView* parent ) const;
+    bool            childHasMouseCapture( const LLView* parent ) const;
 
     // Keyboard Focus
-    void            setKeyboardFocus(LLFocusableElement* new_focus, BOOL lock = FALSE, BOOL keystrokes_only = FALSE);       // new_focus = NULL to release the focus.
+    void            setKeyboardFocus(LLFocusableElement* new_focus, bool lock = false, bool keystrokes_only = false);       // new_focus = NULL to release the focus.
     LLFocusableElement*     getKeyboardFocus() const { return mKeyboardFocus; }
     LLFocusableElement*     getLastKeyboardFocus() const { return mLastKeyboardFocus; }
-    BOOL            childHasKeyboardFocus( const LLView* parent ) const;
+    bool            childHasKeyboardFocus( const LLView* parent ) const;
     void            removeKeyboardFocusWithoutCallback( const LLFocusableElement* focus );
-    BOOL            getKeystrokesOnly() { return mKeystrokesOnly; }
-    void            setKeystrokesOnly(BOOL keystrokes_only) { mKeystrokesOnly = keystrokes_only; }
+    bool            getKeystrokesOnly() { return mKeystrokesOnly; }
+    void            setKeystrokesOnly(bool keystrokes_only) { mKeystrokesOnly = keystrokes_only; }
 
     F32             getFocusFlashAmt() const;
     S32             getFocusFlashWidth() const { return ll_round(lerp(1.f, 3.f, getFocusFlashAmt())); }
     LLColor4        getFocusColor() const;
     void            triggerFocusFlash();
-    BOOL            getAppHasFocus() const { return mAppHasFocus; }
-    void            setAppHasFocus(BOOL focus);
+    bool            getAppHasFocus() const { return mAppHasFocus; }
+    void            setAppHasFocus(bool focus);
     LLView*     getLastFocusForGroup(LLView* subtree_root) const;
     void            clearLastFocusForGroup(LLView* subtree_root);
 
@@ -120,13 +120,13 @@ public:
     void            setTopCtrl(LLUICtrl* new_top);
     LLUICtrl*       getTopCtrl() const                  { return mTopCtrl; }
     void            removeTopCtrlWithoutCallback( const LLUICtrl* top_view );
-    BOOL            childIsTopCtrl( const LLView* parent ) const;
+    bool            childIsTopCtrl( const LLView* parent ) const;
 
     // All Three
     void            releaseFocusIfNeeded( LLView* top_view );
     void            lockFocus();
     void            unlockFocus();
-    BOOL            focusLocked() const { return mLockedView != NULL; }
+    bool            focusLocked() const { return mLockedView != NULL; }
 
     bool            keyboardFocusHasAccelerators() const;
 
@@ -142,14 +142,14 @@ private:
     LLFocusableElement* mKeyboardFocus;             // Keyboard events are preemptively routed to this object
     LLFocusableElement* mLastKeyboardFocus;         // who last had focus
     LLFocusableElement* mDefaultKeyboardFocus;
-    BOOL                mKeystrokesOnly;
+    bool                mKeystrokesOnly;
 
     // Top View
     LLUICtrl*           mTopCtrl;
 
     LLFrameTimer        mFocusFlashTimer;
 
-    BOOL                mAppHasFocus;
+    bool                mAppHasFocus;
 
     Impl * mImpl;
 };
diff --git a/indra/llui/llfolderview.cpp b/indra/llui/llfolderview.cpp
index 33921cf4f0..1d4ecbe9c9 100644
--- a/indra/llui/llfolderview.cpp
+++ b/indra/llui/llfolderview.cpp
@@ -84,12 +84,12 @@ F32 LLFolderView::sAutoOpenTime = 1.f;
 class LLCloseAllFoldersFunctor : public LLFolderViewFunctor
 {
 public:
-    LLCloseAllFoldersFunctor(BOOL close) { mOpen = !close; }
+    LLCloseAllFoldersFunctor(bool close) { mOpen = !close; }
     virtual ~LLCloseAllFoldersFunctor() {}
     virtual void doFolder(LLFolderViewFolder* folder);
     virtual void doItem(LLFolderViewItem* item);
 
-    BOOL mOpen;
+    bool mOpen;
 };
 
 
@@ -167,21 +167,21 @@ LLFolderView::LLFolderView(const Params& p)
     mAllowMultiSelect(p.allow_multiselect),
     mAllowDrag(p.allow_drag),
     mShowEmptyMessage(p.show_empty_message),
-    mShowFolderHierarchy(FALSE),
+    mShowFolderHierarchy(false),
     mRenameItem( NULL ),
-    mNeedsScroll( FALSE ),
+    mNeedsScroll( false ),
     mUseLabelSuffix(p.use_label_suffix),
     mSuppressFolderMenu(p.suppress_folder_menu),
-    mPinningSelectedItem(FALSE),
-    mNeedsAutoSelect( FALSE ),
-    mAutoSelectOverride(FALSE),
-    mNeedsAutoRename(FALSE),
-    mShowSelectionContext(FALSE),
-    mShowSingleSelection(FALSE),
+    mPinningSelectedItem(false),
+    mNeedsAutoSelect( false ),
+    mAutoSelectOverride(false),
+    mNeedsAutoRename(false),
+    mShowSelectionContext(false),
+    mShowSingleSelection(false),
     mArrangeGeneration(0),
     mSignalSelectCallback(0),
     mMinWidth(0),
-    mDragAndDropThisFrame(FALSE),
+    mDragAndDropThisFrame(false),
     mCallbackRegistrar(NULL),
     mEnableRegistrar(NULL),
     mUseEllipses(p.use_ellipses),
@@ -205,7 +205,7 @@ LLFolderView::LLFolderView(const Params& p)
     mAutoOpenItems.setDepth(AUTO_OPEN_STACK_DEPTH);
     mAutoOpenCandidate = NULL;
     mAutoOpenTimer.stop();
-    mKeyboardSelection = FALSE;
+    mKeyboardSelection = false;
     mIndentation =  getParentFolder() ? getParentFolder()->getIndentation() + mLocalIndentation : 0;
 
     //clear label
@@ -286,9 +286,9 @@ LLFolderView::~LLFolderView( void )
     mViewModel = NULL;
 }
 
-BOOL LLFolderView::canFocusChildren() const
+bool LLFolderView::canFocusChildren() const
 {
-    return FALSE;
+    return false;
 }
 
 void LLFolderView::addFolder( LLFolderViewFolder* folder)
@@ -299,7 +299,7 @@ void LLFolderView::addFolder( LLFolderViewFolder* folder)
 void LLFolderView::closeAllFolders()
 {
     // Close all the folders
-    setOpenArrangeRecursively(FALSE, LLFolderViewFolder::RECURSE_DOWN);
+    setOpenArrangeRecursively(false, LLFolderViewFolder::RECURSE_DOWN);
     arrangeAll();
 }
 
@@ -309,7 +309,7 @@ void LLFolderView::openTopLevelFolders()
          iter != mFolders.end();)
     {
         folders_t::iterator fit = iter++;
-        (*fit)->setOpen(TRUE);
+        (*fit)->setOpen(true);
     }
 }
 
@@ -349,7 +349,7 @@ void LLFolderView::filter( LLFolderViewFilter& filter )
     getViewModelItem()->filter(filter);
 }
 
-void LLFolderView::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLFolderView::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLRect scroll_rect;
     if (mScrollContainer)
@@ -366,7 +366,7 @@ void LLFolderView::reshape(S32 width, S32 height, BOOL called_from_parent)
         width = scroll_rect.getWidth();
     }
     LLView::reshape(width, height, called_from_parent);
-    mReshapeSignal(mSelectedItems, FALSE);
+    mReshapeSignal(mSelectedItems, false);
 }
 
 void LLFolderView::addToSelectionList(LLFolderViewItem* item)
@@ -377,9 +377,9 @@ void LLFolderView::addToSelectionList(LLFolderViewItem* item)
     }
     if (mSelectedItems.size())
     {
-        mSelectedItems.back()->setIsCurSelection(FALSE);
+        mSelectedItems.back()->setIsCurSelection(false);
     }
-    item->setIsCurSelection(TRUE);
+    item->setIsCurSelection(true);
     mSelectedItems.push_back(item);
 }
 
@@ -387,7 +387,7 @@ void LLFolderView::removeFromSelectionList(LLFolderViewItem* item)
 {
     if (mSelectedItems.size())
     {
-        mSelectedItems.back()->setIsCurSelection(FALSE);
+        mSelectedItems.back()->setIsCurSelection(false);
     }
 
     selected_items_t::iterator item_iter;
@@ -404,7 +404,7 @@ void LLFolderView::removeFromSelectionList(LLFolderViewItem* item)
     }
     if (mSelectedItems.size())
     {
-        mSelectedItems.back()->setIsCurSelection(TRUE);
+        mSelectedItems.back()->setIsCurSelection(true);
     }
 }
 
@@ -425,19 +425,19 @@ LLFolderView::selected_items_t& LLFolderView::getSelectedItems( void )
 }
 
 // Record the selected item and pass it down the hierachy.
-BOOL LLFolderView::setSelection(LLFolderViewItem* selection, BOOL openitem,
-                                BOOL take_keyboard_focus)
+bool LLFolderView::setSelection(LLFolderViewItem* selection, bool openitem,
+                                bool take_keyboard_focus)
 {
     mSignalSelectCallback = take_keyboard_focus ? SIGNAL_KEYBOARD_FOCUS : SIGNAL_NO_KEYBOARD_FOCUS;
 
     if( selection == this )
     {
-        return FALSE;
+        return false;
     }
 
     if( selection && take_keyboard_focus)
     {
-        mParentPanel.get()->setFocus(TRUE);
+        mParentPanel.get()->setFocus(true);
     }
 
     // clear selection down here because change of keyboard focus can potentially
@@ -449,7 +449,7 @@ BOOL LLFolderView::setSelection(LLFolderViewItem* selection, BOOL openitem,
         addToSelectionList(selection);
     }
 
-    BOOL rv = LLFolderViewFolder::setSelection(selection, openitem, take_keyboard_focus);
+    bool rv = LLFolderViewFolder::setSelection(selection, openitem, take_keyboard_focus);
     if(openitem && selection)
     {
         selection->getParentFolder()->requestArrange();
@@ -460,14 +460,14 @@ BOOL LLFolderView::setSelection(LLFolderViewItem* selection, BOOL openitem,
     return rv;
 }
 
-BOOL LLFolderView::changeSelection(LLFolderViewItem* selection, BOOL selected)
+bool LLFolderView::changeSelection(LLFolderViewItem* selection, bool selected)
 {
-    BOOL rv = FALSE;
+    bool rv = false;
 
     // can't select root folder
     if(!selection || selection == this)
     {
-        return FALSE;
+        return false;
     }
 
     if (!mAllowMultiSelect)
@@ -484,7 +484,7 @@ BOOL LLFolderView::changeSelection(LLFolderViewItem* selection, BOOL selected)
         }
     }
 
-    BOOL on_list = (item_iter != mSelectedItems.end());
+    bool on_list = (item_iter != mSelectedItems.end());
 
     if(selected && !on_list)
     {
@@ -516,7 +516,7 @@ void LLFolderView::sanitizeSelection()
         LLFolderViewItem* item = *item_iter;
 
         // ensure that each ancestor is open and potentially passes filtering
-        BOOL visible = false;
+        bool visible = false;
         if(item->getViewModelItem() != NULL)
         {
             visible = item->getViewModelItem()->potentiallyVisible(); // initialize from filter state for this item
@@ -564,7 +564,7 @@ void LLFolderView::sanitizeSelection()
     std::vector<LLFolderViewItem*>::iterator item_it;
     for (item_it = items_to_remove.begin(); item_it != items_to_remove.end(); ++item_it )
     {
-        changeSelection(*item_it, FALSE); // toggle selection (also removes from list)
+        changeSelection(*item_it, false); // toggle selection (also removes from list)
     }
 
     // if nothing selected after prior constraints...
@@ -602,7 +602,7 @@ void LLFolderView::sanitizeSelection()
 
         if (new_selection)
         {
-            setSelection(new_selection, FALSE, FALSE);
+            setSelection(new_selection, false, false);
         }
     }
 }
@@ -670,12 +670,12 @@ void LLFolderView::draw()
 
     if (hasVisibleChildren())
     {
-        mStatusTextBox->setVisible( FALSE );
+        mStatusTextBox->setVisible( false );
     }
     else if (mShowEmptyMessage)
     {
         mStatusTextBox->setValue(getFolderViewModel()->getStatusText(mItems.empty() && mFolders.empty()));
-        mStatusTextBox->setVisible( TRUE );
+        mStatusTextBox->setVisible( true );
 
         // firstly reshape message textbox with current size. This is necessary to
         // LLTextBox::getTextPixelHeight works properly
@@ -717,7 +717,7 @@ void LLFolderView::draw()
     // and arrow for the root folder
     LLView::draw();
 
-    mDragAndDropThisFrame = FALSE;
+    mDragAndDropThisFrame = false;
 }
 
 void LLFolderView::finishRenamingItem( void )
@@ -758,7 +758,7 @@ void LLFolderView::removeSelectedItems()
         // items, since the removal will futz with internal data
         // structures.
         std::vector<LLFolderViewItem*> items;
-        S32 count = mSelectedItems.size();
+        auto count = mSelectedItems.size();
         if(count <= 0) return;
         LLFolderViewItem* item = NULL;
         selected_items_t::iterator item_it;
@@ -803,7 +803,7 @@ void LLFolderView::removeSelectedItems()
             setSelection(item_to_select, item_to_select ? item_to_select->isOpen() : false, mParentPanel.get()->hasFocus());
 
             listeners.reserve(count);
-            for(S32 i = 0; i < count; ++i)
+            for(size_t i = 0; i < count; ++i)
             {
                 listener = items[i]->getViewModelItem();
                 if(listener && (std::find(listeners.begin(), listeners.end(), listener) == listeners.end()))
@@ -836,7 +836,7 @@ void LLFolderView::autoOpenItem( LLFolderViewFolder* item )
     while (close_item && close_item != item->getParentFolder())
     {
         mAutoOpenItems.pop();
-        close_item->setOpenArrangeRecursively(FALSE);
+        close_item->setOpenArrangeRecursively(false);
         close_item = mAutoOpenItems.check();
     }
 
@@ -844,7 +844,7 @@ void LLFolderView::autoOpenItem( LLFolderViewFolder* item )
 
     mAutoOpenItems.push(item);
 
-    item->setOpen(TRUE);
+    item->setOpen(true);
     if(!item->isSingleFolderMode())
     {
     LLRect content_rect = (mScrollContainer ? mScrollContainer->getContentWindowRect() : LLRect());
@@ -858,7 +858,7 @@ void LLFolderView::closeAutoOpenedFolders()
     while (mAutoOpenItems.check())
     {
         LLFolderViewFolder* close_item = mAutoOpenItems.pop();
-        close_item->setOpen(FALSE);
+        close_item->setOpen(false);
     }
 
     if (mAutoOpenCandidate)
@@ -869,7 +869,7 @@ void LLFolderView::closeAutoOpenedFolders()
     mAutoOpenTimer.stop();
 }
 
-BOOL LLFolderView::autoOpenTest(LLFolderViewFolder* folder)
+bool LLFolderView::autoOpenTest(LLFolderViewFolder* folder)
 {
     if (folder && mAutoOpenCandidate == folder)
     {
@@ -883,10 +883,10 @@ BOOL LLFolderView::autoOpenTest(LLFolderViewFolder* folder)
             {
                 autoOpenItem(folder);
                 mAutoOpenTimer.stop();
-                return TRUE;
+                return true;
             }
         }
-        return FALSE;
+        return false;
     }
 
     // otherwise new candidate, restart timer
@@ -896,14 +896,14 @@ BOOL LLFolderView::autoOpenTest(LLFolderViewFolder* folder)
     }
     mAutoOpenCandidate = folder;
     mAutoOpenTimer.start();
-    return FALSE;
+    return false;
 }
 
-BOOL LLFolderView::canCopy() const
+bool LLFolderView::canCopy() const
 {
     if (!(getVisible() && getEnabled() && (mSelectedItems.size() > 0)))
     {
-        return FALSE;
+        return false;
     }
 
     for (selected_items_t::const_iterator selected_it = mSelectedItems.begin(); selected_it != mSelectedItems.end(); ++selected_it)
@@ -911,10 +911,10 @@ BOOL LLFolderView::canCopy() const
         const LLFolderViewItem* item = *selected_it;
         if (!item->getViewModelItem()->isItemCopyable())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 // copy selected item
@@ -922,7 +922,7 @@ void LLFolderView::copy()
 {
     // *NOTE: total hack to clear the inventory clipboard
     LLClipboard::instance().reset();
-    S32 count = mSelectedItems.size();
+    auto count = mSelectedItems.size();
     if(getVisible() && getEnabled() && (count > 0))
     {
         LLFolderViewModelItem* listener = NULL;
@@ -939,11 +939,11 @@ void LLFolderView::copy()
     mSearchString.clear();
 }
 
-BOOL LLFolderView::canCut() const
+bool LLFolderView::canCut() const
 {
     if (!(getVisible() && getEnabled() && (mSelectedItems.size() > 0)))
     {
-        return FALSE;
+        return false;
     }
 
     for (selected_items_t::const_iterator selected_it = mSelectedItems.begin(); selected_it != mSelectedItems.end(); ++selected_it)
@@ -953,10 +953,10 @@ BOOL LLFolderView::canCut() const
 
         if (!listener || !listener->isItemRemovable())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 void LLFolderView::cut()
@@ -988,11 +988,11 @@ void LLFolderView::cut()
     mSearchString.clear();
 }
 
-BOOL LLFolderView::canPaste() const
+bool LLFolderView::canPaste() const
 {
     if (mSelectedItems.empty())
     {
-        return FALSE;
+        return false;
     }
 
     if(getVisible() && getEnabled())
@@ -1009,13 +1009,13 @@ BOOL LLFolderView::canPaste() const
                 listener = folderp->getViewModelItem();
                 if (!listener || !listener->isClipboardPasteable())
                 {
-                    return FALSE;
+                    return false;
                 }
             }
         }
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 // paste selected item
@@ -1059,7 +1059,7 @@ void LLFolderView::startRenamingSelectedItem( void )
     // make sure selection is visible
     scrollToShowSelection();
 
-    S32 count = mSelectedItems.size();
+    auto count = mSelectedItems.size();
     LLFolderViewItem* item = NULL;
     if(count > 0)
     {
@@ -1075,9 +1075,9 @@ void LLFolderView::startRenamingSelectedItem( void )
 
         mRenamer->setText(item->getName());
         mRenamer->selectAll();
-        mRenamer->setVisible( TRUE );
+        mRenamer->setVisible( true );
         // set focus will fail unless item is visible
-        mRenamer->setFocus( TRUE );
+        mRenamer->setFocus( true );
         if (!mRenamerTopLostSignalConnection.connected())
         {
             mRenamerTopLostSignalConnection = mRenamer->setTopLostCallback(boost::bind(&LLFolderView::onRenamerLost, this));
@@ -1086,9 +1086,9 @@ void LLFolderView::startRenamingSelectedItem( void )
     }
 }
 
-BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
+bool LLFolderView::handleKeyHere( KEY key, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     // SL-51858: Key presses are not being passed to the Popup menu.
     // A proper fix is non-trivial so instead just close the menu.
@@ -1103,7 +1103,7 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
     case KEY_F2:
         mSearchString.clear();
         startRenamingSelectedItem();
-        handled = TRUE;
+        handled = true;
         break;
 
     case KEY_RETURN:
@@ -1113,7 +1113,7 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
             {
                 finishRenamingItem();
                 mSearchString.clear();
-                handled = TRUE;
+                handled = true;
             }
         }
         break;
@@ -1122,7 +1122,7 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
         if( mRenameItem && mRenamer->getVisible() )
         {
             closeRenamer();
-            handled = TRUE;
+            handled = true;
         }
         mSearchString.clear();
         break;
@@ -1133,7 +1133,7 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
         {
         mScrollContainer->pageUp(30);
         }
-        handled = TRUE;
+        handled = true;
         break;
 
     case KEY_PAGE_DOWN:
@@ -1142,7 +1142,7 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
         {
         mScrollContainer->pageDown(30);
         }
-        handled = TRUE;
+        handled = true;
         break;
 
     case KEY_HOME:
@@ -1151,7 +1151,7 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
         {
         mScrollContainer->goToTop();
         }
-        handled = TRUE;
+        handled = true;
         break;
 
     case KEY_END:
@@ -1166,14 +1166,14 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
         if((mSelectedItems.size() > 0) && mScrollContainer)
         {
             LLFolderViewItem* last_selected = getCurSelectedItem();
-            BOOL shift_select = mask & MASK_SHIFT;
+            bool shift_select = mask & MASK_SHIFT;
             // don't shift select down to children of folders (they are implicitly selected through parent)
             LLFolderViewItem* next = last_selected->getNextOpenNode(!shift_select);
 
             if (!mKeyboardSelection || (!shift_select && (!next || next == last_selected)))
             {
-                setSelection(last_selected, FALSE, TRUE);
-                mKeyboardSelection = TRUE;
+                setSelection(last_selected, false, true);
+                mKeyboardSelection = true;
             }
 
             if (shift_select)
@@ -1183,12 +1183,12 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
                     if (next->isSelected())
                     {
                         // shrink selection
-                        changeSelection(last_selected, FALSE);
+                        changeSelection(last_selected, false);
                     }
                     else if (last_selected->getParentFolder() == next->getParentFolder())
                     {
                         // grow selection
-                        changeSelection(next, TRUE);
+                        changeSelection(next, true);
                     }
                 }
             }
@@ -1202,11 +1202,11 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
                         if(notifyParent(LLSD().with("action","select_next")) > 0 )//message was processed
                         {
                             clearSelection();
-                            return TRUE;
+                            return true;
                         }
-                        return FALSE;
+                        return false;
                     }
-                    setSelection( next, FALSE, TRUE );
+                    setSelection( next, false, true );
                 }
                 else
                 {
@@ -1214,14 +1214,14 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
                     if(notifyParent(LLSD().with("action","select_next")) > 0 )//message was processed
                     {
                         clearSelection();
-                        return TRUE;
+                        return true;
                     }
-                    return FALSE;
+                    return false;
                 }
             }
             scrollToShowSelection();
             mSearchString.clear();
-            handled = TRUE;
+            handled = true;
         }
         break;
 
@@ -1229,14 +1229,14 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
         if((mSelectedItems.size() > 0) && mScrollContainer)
         {
             LLFolderViewItem* last_selected = mSelectedItems.back();
-            BOOL shift_select = mask & MASK_SHIFT;
+            bool shift_select = mask & MASK_SHIFT;
             // don't shift select down to children of folders (they are implicitly selected through parent)
             LLFolderViewItem* prev = last_selected->getPreviousOpenNode(!shift_select);
 
             if (!mKeyboardSelection || (!shift_select && prev == this))
             {
-                setSelection(last_selected, FALSE, TRUE);
-                mKeyboardSelection = TRUE;
+                setSelection(last_selected, false, true);
+                mKeyboardSelection = true;
             }
 
             if (shift_select)
@@ -1246,12 +1246,12 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
                     if (prev->isSelected())
                     {
                         // shrink selection
-                        changeSelection(last_selected, FALSE);
+                        changeSelection(last_selected, false);
                     }
                     else if (last_selected->getParentFolder() == prev->getParentFolder())
                     {
                         // grow selection
-                        changeSelection(prev, TRUE);
+                        changeSelection(prev, true);
                     }
                 }
             }
@@ -1265,18 +1265,18 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
                         if(notifyParent(LLSD().with("action","select_prev")) > 0 )//message was processed
                         {
                             clearSelection();
-                            return TRUE;
+                            return true;
                         }
 
-                        return FALSE;
+                        return false;
                     }
-                    setSelection( prev, FALSE, TRUE );
+                    setSelection( prev, false, true );
                 }
             }
             scrollToShowSelection();
             mSearchString.clear();
 
-            handled = TRUE;
+            handled = true;
         }
         break;
 
@@ -1284,9 +1284,9 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
         if(mSelectedItems.size())
         {
             LLFolderViewItem* last_selected = getCurSelectedItem();
-            last_selected->setOpen( TRUE );
+            last_selected->setOpen( true );
             mSearchString.clear();
-            handled = TRUE;
+            handled = true;
         }
         break;
 
@@ -1296,21 +1296,21 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
             LLFolderViewItem* last_selected = getCurSelectedItem();
             if(last_selected && last_selected->isSingleFolderMode())
             {
-                handled = FALSE;
+                handled = false;
                 break;
             }
             LLFolderViewItem* parent_folder = last_selected->getParentFolder();
             if (!last_selected->isOpen() && parent_folder && parent_folder->getParentFolder())
             {
-                setSelection(parent_folder, FALSE, TRUE);
+                setSelection(parent_folder, false, true);
             }
             else
             {
-                last_selected->setOpen( FALSE );
+                last_selected->setOpen( false );
             }
             mSearchString.clear();
             scrollToShowSelection();
-            handled = TRUE;
+            handled = true;
         }
         break;
     }
@@ -1319,20 +1319,20 @@ BOOL LLFolderView::handleKeyHere( KEY key, MASK mask )
 }
 
 
-BOOL LLFolderView::handleUnicodeCharHere(llwchar uni_char)
+bool LLFolderView::handleUnicodeCharHere(llwchar uni_char)
 {
     if ((uni_char < 0x20) || (uni_char == 0x7F)) // Control character or DEL
     {
-        return FALSE;
+        return false;
     }
 
     if (uni_char > 0x7f)
     {
         LL_WARNS() << "LLFolderView::handleUnicodeCharHere - Don't handle non-ascii yet, aborting" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
-    BOOL handled = FALSE;
+    bool handled = false;
     if (mParentPanel.get()->hasFocus())
     {
         // SL-51858: Key presses are not being passed to the Popup menu.
@@ -1353,28 +1353,28 @@ BOOL LLFolderView::handleUnicodeCharHere(llwchar uni_char)
         {
             mSearchString += uni_char;
         }
-        search(getCurSelectedItem(), mSearchString, FALSE);
+        search(getCurSelectedItem(), mSearchString, false);
 
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
 }
 
 
-BOOL LLFolderView::handleMouseDown( S32 x, S32 y, MASK mask )
+bool LLFolderView::handleMouseDown( S32 x, S32 y, MASK mask )
 {
-    mKeyboardSelection = FALSE;
+    mKeyboardSelection = false;
     mSearchString.clear();
 
-    mParentPanel.get()->setFocus(TRUE);
+    mParentPanel.get()->setFocus(true);
 
     LLEditMenuHandler::gEditMenuHandler = this;
 
     return LLView::handleMouseDown( x, y, mask );
 }
 
-BOOL LLFolderView::search(LLFolderViewItem* first_item, const std::string &search_string, BOOL backward)
+bool LLFolderView::search(LLFolderViewItem* first_item, const std::string &search_string, bool backward)
 {
     // get first selected item
     LLFolderViewItem* search_item = first_item;
@@ -1391,7 +1391,7 @@ BOOL LLFolderView::search(LLFolderViewItem* first_item, const std::string &searc
     }
 
     // search over all open nodes for first substring match (with wrapping)
-    BOOL found = FALSE;
+    bool found = false;
     LLFolderViewItem* original_search_item = search_item;
     do
     {
@@ -1414,10 +1414,10 @@ BOOL LLFolderView::search(LLFolderViewItem* first_item, const std::string &searc
 
         std::string current_item_label(search_item->getViewModelItem()->getSearchableName());
         LLStringUtil::toUpper(current_item_label);
-        S32 search_string_length = llmin(upper_case_string.size(), current_item_label.size());
+        auto search_string_length = llmin(upper_case_string.size(), current_item_label.size());
         if (!current_item_label.compare(0, search_string_length, upper_case_string))
         {
-            found = TRUE;
+            found = true;
             break;
         }
         if (backward)
@@ -1434,27 +1434,27 @@ BOOL LLFolderView::search(LLFolderViewItem* first_item, const std::string &searc
 
     if (found)
     {
-        setSelection(search_item, FALSE, TRUE);
+        setSelection(search_item, false, true);
         scrollToShowSelection();
     }
 
     return found;
 }
 
-BOOL LLFolderView::handleDoubleClick( S32 x, S32 y, MASK mask )
+bool LLFolderView::handleDoubleClick( S32 x, S32 y, MASK mask )
 {
     // skip LLFolderViewFolder::handleDoubleClick()
     return LLView::handleDoubleClick( x, y, mask );
 }
 
-BOOL LLFolderView::handleRightMouseDown( S32 x, S32 y, MASK mask )
+bool LLFolderView::handleRightMouseDown( S32 x, S32 y, MASK mask )
 {
     // all user operations move keyboard focus to inventory
     // this way, we know when to stop auto-updating a search
-    mParentPanel.get()->setFocus(TRUE);
+    mParentPanel.get()->setFocus(true);
 
-    BOOL handled = childrenHandleRightMouseDown(x, y, mask) != NULL;
-    S32 count = mSelectedItems.size();
+    bool handled = childrenHandleRightMouseDown(x, y, mask) != NULL;
+    auto count = mSelectedItems.size();
 
     LLMenuGL* menu = static_cast<LLMenuGL*>(mPopupMenuHandle.get());
     if (!menu)
@@ -1485,10 +1485,10 @@ BOOL LLFolderView::handleRightMouseDown( S32 x, S32 y, MASK mask )
         }
     }
 
-    BOOL item_clicked = FALSE;
-    for (selected_items_t::iterator item_it = mSelectedItems.begin(); item_it != mSelectedItems.end(); ++item_it)
+    bool item_clicked{ false };
+    for (const auto item : mSelectedItems)
     {
-        item_clicked |= (*item_it)->getRect().pointInRect(x, y);
+        item_clicked |= item->getRect().pointInRect(x, y);
     }
     if(!item_clicked && mSingleFolderMode)
     {
@@ -1525,15 +1525,15 @@ BOOL LLFolderView::handleRightMouseDown( S32 x, S32 y, MASK mask )
     {
         if (menu && menu->getVisible())
         {
-            menu->setVisible(FALSE);
+            menu->setVisible(false);
         }
-        setSelection(NULL, FALSE, TRUE);
+        setSelection(NULL, false, true);
     }
     return handled;
 }
 
 // Add "--no options--" if the menu is completely blank.
-BOOL LLFolderView::addNoOptions(LLMenuGL* menu) const
+bool LLFolderView::addNoOptions(LLMenuGL* menu) const
 {
     const std::string nooptions_str = "--no options--";
     LLView *nooptions_item = NULL;
@@ -1546,7 +1546,7 @@ BOOL LLFolderView::addNoOptions(LLMenuGL* menu) const
         LLView *menu_item = (*itor);
         if (menu_item->getVisible())
         {
-            return FALSE;
+            return false;
         }
         std::string name = menu_item->getName();
         if (menu_item->getName() == nooptions_str)
@@ -1556,14 +1556,14 @@ BOOL LLFolderView::addNoOptions(LLMenuGL* menu) const
     }
     if (nooptions_item)
     {
-        nooptions_item->setVisible(TRUE);
-        nooptions_item->setEnabled(FALSE);
-        return TRUE;
+        nooptions_item->setVisible(true);
+        nooptions_item->setEnabled(false);
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLFolderView::handleHover( S32 x, S32 y, MASK mask )
+bool LLFolderView::handleHover( S32 x, S32 y, MASK mask )
 {
     return LLView::handleHover( x, y, mask );
 }
@@ -1584,15 +1584,15 @@ void LLFolderView::setHoveredItem(LLFolderViewItem* itemp)
     }
 }
 
-BOOL LLFolderView::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLFolderView::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                      EDragAndDropType cargo_type,
                                      void* cargo_data,
                                      EAcceptance* accept,
                                      std::string& tooltip_msg)
 {
-    mDragAndDropThisFrame = TRUE;
+    mDragAndDropThisFrame = true;
     // have children handle it first
-    BOOL handled = LLView::handleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data,
+    bool handled = LLView::handleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data,
                                              accept, tooltip_msg);
 
     // when drop is not handled by child, it should be handled
@@ -1627,7 +1627,7 @@ void LLFolderView::scrollToShowSelection()
 {
     if ( mSelectedItems.size() )
     {
-        mNeedsScroll = TRUE;
+        mNeedsScroll = true;
     }
 }
 
@@ -1640,7 +1640,7 @@ void LLFolderView::scrollToShowItem(LLFolderViewItem* item, const LLRect& constr
     // don't scroll to items when mouse is being used to scroll/drag and drop
     if (gFocusMgr.childHasMouseCapture(mScrollContainer))
     {
-        mNeedsScroll = FALSE;
+        mNeedsScroll = false;
         return;
     }
 
@@ -1678,18 +1678,18 @@ LLRect LLFolderView::getVisibleRect()
     return visible_rect;
 }
 
-BOOL LLFolderView::getShowSelectionContext()
+bool LLFolderView::getShowSelectionContext()
 {
     if (mShowSelectionContext)
     {
-        return TRUE;
+        return true;
     }
     LLMenuGL* menu = (LLMenuGL*)mPopupMenuHandle.get();
     if (menu && menu->getVisible())
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 void LLFolderView::setShowSingleSelection(bool show)
@@ -1720,7 +1720,7 @@ void LLFolderView::update()
 
     if (filter_object.isModified() && filter_object.isNotDefault() && mParentPanel.get()->getVisible())
     {
-        mNeedsAutoSelect = TRUE;
+        mNeedsAutoSelect = true;
     }
 
     // Filter to determine visibility before arranging
@@ -1747,7 +1747,7 @@ void LLFolderView::update()
             applyFunctorRecursively(functor);
         }
 
-        // Open filtered folders for folder views with mAutoSelectOverride=TRUE.
+        // Open filtered folders for folder views with mAutoSelectOverride=true.
         // Used by LLPlacesFolderView.
         if (filter_object.showAllResults())
         {
@@ -1760,7 +1760,7 @@ void LLFolderView::update()
         scrollToShowSelection();
     }
 
-    BOOL filter_finished = mViewModel->contentsReady()
+    bool filter_finished = mViewModel->contentsReady()
                             && (getViewModelItem()->passedFilter()
                                 || ( getViewModelItem()->getLastFilterGeneration() >= filter_object.getFirstSuccessGeneration()
                                     && !filter_modified));
@@ -1769,10 +1769,10 @@ void LLFolderView::update()
         || gFocusMgr.childHasMouseCapture(mParentPanel.get()))
     {
         // finishing the filter process, giving focus to the folder view, or dragging the scrollbar all stop the auto select process
-        mNeedsAutoSelect = FALSE;
+        mNeedsAutoSelect = false;
     }
 
-  BOOL is_visible = isInVisibleChain() || mForceArrange;
+  bool is_visible = isInVisibleChain() || mForceArrange;
 
   //Puts folders/items in proper positions
   // arrange() takes the model filter flag into account and call sort() if necessary (CHUI-849)
@@ -1797,7 +1797,7 @@ void LLFolderView::update()
         if (!mPinningSelectedItem && !mSelectedItems.empty())
         {
             // lets pin it!
-            mPinningSelectedItem = TRUE;
+            mPinningSelectedItem = true;
 
       //Computes visible area
             const LLRect visible_content_rect = (mScrollContainer ? mScrollContainer->getVisibleContentRect() : LLRect());
@@ -1832,7 +1832,7 @@ void LLFolderView::update()
         // stop pinning selected item after folders stop rearranging
         if (!needsArrange())
         {
-            mPinningSelectedItem = FALSE;
+            mPinningSelectedItem = false;
         }
     }
 
@@ -1868,7 +1868,7 @@ void LLFolderView::update()
             }
             if (!needs_arrange || !is_visible)
             {
-                mNeedsScroll = FALSE;
+                mNeedsScroll = false;
             }
         }
     }
@@ -1885,15 +1885,15 @@ void LLFolderView::update()
             if (mSignalSelectCallback)
             {
                 //RN: we use keyboard focus as a proxy for user-explicit actions
-                BOOL take_keyboard_focus = (mSignalSelectCallback == SIGNAL_KEYBOARD_FOCUS);
+                bool take_keyboard_focus = (mSignalSelectCallback == SIGNAL_KEYBOARD_FOCUS);
                 mSelectSignal(mSelectedItems, take_keyboard_focus);
             }
-            mSignalSelectCallback = FALSE;
+            mSignalSelectCallback = false;
         }
     }
     else
     {
-        mSignalSelectCallback = FALSE;
+        mSignalSelectCallback = false;
     }
 }
 
@@ -1928,7 +1928,7 @@ void LLFolderView::updateRenamerPosition()
 
         S32 width = llmax(llmin(mRenameItem->getRect().getWidth() - x, scroller_rect.getWidth() - x - getRect().mLeft), MINIMUM_RENAMER_WIDTH);
         S32 height = mRenameItem->getItemHeight() - RENAME_HEIGHT_PAD;
-        mRenamer->reshape( width, height, TRUE );
+        mRenamer->reshape( width, height, true );
     }
 }
 
@@ -1940,9 +1940,9 @@ void LLFolderView::updateMenuOptions(LLMenuGL* menu)
     LLView::child_list_t::const_iterator menu_itor;
     for (menu_itor = list->begin(); menu_itor != list->end(); ++menu_itor)
     {
-        (*menu_itor)->setVisible(FALSE);
-        (*menu_itor)->pushVisible(TRUE);
-        (*menu_itor)->setEnabled(TRUE);
+        (*menu_itor)->setVisible(false);
+        (*menu_itor)->pushVisible(true);
+        (*menu_itor)->setEnabled(true);
     }
 
     // Successively filter out invalid options
@@ -2008,7 +2008,7 @@ bool LLFolderView::selectFirstItem()
         {
             LLFolderViewItem* itemp = folder->getNextFromChild(0,true);
             if(itemp)
-                setSelection(itemp,FALSE,TRUE);
+                setSelection(itemp,false,true);
             return true;
         }
 
@@ -2019,7 +2019,7 @@ bool LLFolderView::selectFirstItem()
         LLFolderViewItem* itemp = (*iit);
         if (itemp->getVisible())
         {
-            setSelection(itemp,FALSE,TRUE);
+            setSelection(itemp,false,true);
             return true;
         }
     }
@@ -2033,7 +2033,7 @@ bool LLFolderView::selectLastItem()
         LLFolderViewItem* itemp = (*iit);
         if (itemp->getVisible())
         {
-            setSelection(itemp,FALSE,TRUE);
+            setSelection(itemp,false,true);
             return true;
         }
     }
@@ -2045,7 +2045,7 @@ bool LLFolderView::selectLastItem()
         {
             LLFolderViewItem* itemp = folder->getPreviousFromChild(0,true);
             if(itemp)
-                setSelection(itemp,FALSE,TRUE);
+                setSelection(itemp,false,true);
             return true;
         }
     }
@@ -2086,15 +2086,15 @@ void LLFolderView::onRenamerLost()
 {
     if (mRenamer && mRenamer->getVisible())
     {
-        mRenamer->setVisible(FALSE);
+        mRenamer->setVisible(false);
 
         // will commit current name (which could be same as original name)
-        mRenamer->setFocus(FALSE);
+        mRenamer->setFocus(false);
     }
 
     if( mRenameItem )
     {
-        setSelection( mRenameItem, TRUE );
+        setSelection( mRenameItem, true );
         mRenameItem = NULL;
     }
 }
@@ -2102,17 +2102,17 @@ void LLFolderView::onRenamerLost()
 LLFolderViewItem* LLFolderView::getNextUnselectedItem()
 {
     LLFolderViewItem* last_item = *mSelectedItems.rbegin();
-    LLFolderViewItem* new_selection = last_item->getNextOpenNode(FALSE);
+    LLFolderViewItem* new_selection = last_item->getNextOpenNode(false);
     while(new_selection && new_selection->isSelected())
     {
-        new_selection = new_selection->getNextOpenNode(FALSE);
+        new_selection = new_selection->getNextOpenNode(false);
     }
     if (!new_selection)
     {
-        new_selection = last_item->getPreviousOpenNode(FALSE);
+        new_selection = last_item->getPreviousOpenNode(false);
         while (new_selection && (new_selection->isInSelection()))
         {
-            new_selection = new_selection->getPreviousOpenNode(FALSE);
+            new_selection = new_selection->getPreviousOpenNode(false);
         }
     }
     return new_selection;
diff --git a/indra/llui/llfolderview.h b/indra/llui/llfolderview.h
index ca78bd3072..62ef2a0626 100644
--- a/indra/llui/llfolderview.h
+++ b/indra/llui/llfolderview.h
@@ -109,7 +109,7 @@ public:
     LLFolderView(const Params&);
     virtual ~LLFolderView( void );
 
-    virtual BOOL canFocusChildren() const;
+    virtual bool canFocusChildren() const;
 
     virtual const LLFolderView* getRoot() const { return this; }
     virtual LLFolderView*   getRoot() { return this; }
@@ -120,7 +120,7 @@ public:
     LLFolderViewGroupedItemModel* getFolderViewGroupedItemModel() { return mGroupedItemModel; }
     const LLFolderViewGroupedItemModel* getFolderViewGroupedItemModel() const { return mGroupedItemModel; }
 
-    typedef boost::signals2::signal<void (const std::deque<LLFolderViewItem*>& items, BOOL user_action)> signal_t;
+    typedef boost::signals2::signal<void (const std::deque<LLFolderViewItem*>& items, bool user_action)> signal_t;
     void setSelectCallback(const signal_t::slot_type& cb) { mSelectSignal.connect(cb); }
     void setReshapeCallback(const signal_t::slot_type& cb) { mReshapeSignal.connect(cb); }
 
@@ -156,12 +156,12 @@ public:
     selected_items_t& getSelectedItems( void );
 
     // Record the selected item and pass it down the hierarchy.
-    virtual BOOL setSelection(LLFolderViewItem* selection, BOOL openitem,
-        BOOL take_keyboard_focus = TRUE);
+    virtual bool setSelection(LLFolderViewItem* selection, bool openitem,
+        bool take_keyboard_focus = true);
 
     // This method is used to toggle the selection of an item. Walks
     // children, and keeps track of selected objects.
-    virtual BOOL changeSelection(LLFolderViewItem* selection, BOOL selected);
+    virtual bool changeSelection(LLFolderViewItem* selection, bool selected);
 
     virtual std::set<LLFolderViewItem*> getSelectionList() const;
 
@@ -172,7 +172,7 @@ public:
     void removeFromSelectionList(LLFolderViewItem* item);
 
     bool startDrag();
-    void setDragAndDropThisFrame() { mDragAndDropThisFrame = TRUE; }
+    void setDragAndDropThisFrame() { mDragAndDropThisFrame = true; }
     void setDraggingOverItem(LLFolderViewItem* item) { mDraggingOverItem = item; }
     LLFolderViewItem* getDraggingOverItem() { return mDraggingOverItem; }
 
@@ -181,17 +181,17 @@ public:
 
     void autoOpenItem(LLFolderViewFolder* item);
     void closeAutoOpenedFolders();
-    BOOL autoOpenTest(LLFolderViewFolder* item);
-    BOOL isOpen() const { return TRUE; } // root folder always open
+    bool autoOpenTest(LLFolderViewFolder* item);
+    bool isOpen() const { return true; } // root folder always open
 
     // Copy & paste
-    virtual BOOL    canCopy() const;
+    virtual bool    canCopy() const;
     virtual void    copy();
 
-    virtual BOOL    canCut() const;
+    virtual bool    canCut() const;
     virtual void    cut();
 
-    virtual BOOL    canPaste() const;
+    virtual bool    canPaste() const;
     virtual void    paste();
 
     LLFolderViewItem* getNextUnselectedItem();
@@ -200,20 +200,20 @@ public:
     void startRenamingSelectedItem( void );
 
     // LLView functionality
-    ///*virtual*/ BOOL handleKey( KEY key, MASK mask, BOOL called_from_parent );
-    /*virtual*/ BOOL handleKeyHere( KEY key, MASK mask );
-    /*virtual*/ BOOL handleUnicodeCharHere(llwchar uni_char);
-    /*virtual*/ BOOL handleMouseDown( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL handleDoubleClick( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL handleRightMouseDown( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL handleHover( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    ///*virtual*/ bool handleKey( KEY key, MASK mask, bool called_from_parent );
+    /*virtual*/ bool handleKeyHere( KEY key, MASK mask );
+    /*virtual*/ bool handleUnicodeCharHere(llwchar uni_char);
+    /*virtual*/ bool handleMouseDown( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleDoubleClick( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleRightMouseDown( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleHover( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                    EDragAndDropType cargo_type,
                                    void* cargo_data,
                                    EAcceptance* accept,
                                    std::string& tooltip_msg);
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
-    /*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask) { setShowSelectionContext(FALSE); }
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
+    /*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask) { setShowSelectionContext(false); }
     virtual void draw();
     virtual void deleteAllChildren();
 
@@ -223,22 +223,22 @@ public:
     void setScrollContainer( LLScrollContainer* parent ) { mScrollContainer = parent; }
     LLRect getVisibleRect();
 
-    BOOL search(LLFolderViewItem* first_item, const std::string &search_string, BOOL backward);
+    bool search(LLFolderViewItem* first_item, const std::string &search_string, bool backward);
     void setShowSelectionContext(bool show) { mShowSelectionContext = show; }
-    BOOL getShowSelectionContext();
+    bool getShowSelectionContext();
     void setShowSingleSelection(bool show);
-    BOOL getShowSingleSelection() { return mShowSingleSelection; }
+    bool getShowSingleSelection() { return mShowSingleSelection; }
     F32  getSelectionFadeElapsedTime() { return mMultiSelectionFadeTimer.getElapsedTimeF32(); }
     bool getUseEllipses() { return mUseEllipses; }
     S32 getSelectedCount() { return (S32)mSelectedItems.size(); }
 
     void    update();                       // needs to be called periodically (e.g. once per frame)
 
-    BOOL needsAutoSelect() { return mNeedsAutoSelect && !mAutoSelectOverride; }
-    BOOL needsAutoRename() { return mNeedsAutoRename; }
-    void setNeedsAutoRename(BOOL val) { mNeedsAutoRename = val; }
-    void setPinningSelectedItem(BOOL val) { mPinningSelectedItem = val; }
-    void setAutoSelectOverride(BOOL val) { mAutoSelectOverride = val; }
+    bool needsAutoSelect() { return mNeedsAutoSelect && !mAutoSelectOverride; }
+    bool needsAutoRename() { return mNeedsAutoRename; }
+    void setNeedsAutoRename(bool val) { mNeedsAutoRename = val; }
+    void setPinningSelectedItem(bool val) { mPinningSelectedItem = val; }
+    void setAutoSelectOverride(bool val) { mAutoSelectOverride = val; }
 
     bool showItemLinkOverlays() { return mShowItemLinkOverlays; }
 
@@ -280,7 +280,7 @@ protected:
     bool selectFirstItem();
     bool selectLastItem();
 
-    BOOL addNoOptions(LLMenuGL* menu) const;
+    bool addNoOptions(LLMenuGL* menu) const;
 
 
 protected:
@@ -386,14 +386,14 @@ public:
 class LLSelectFirstFilteredItem : public LLFolderViewFunctor
 {
 public:
-    LLSelectFirstFilteredItem() : mItemSelected(FALSE), mFolderSelected(FALSE) {}
+    LLSelectFirstFilteredItem() : mItemSelected(false), mFolderSelected(false) {}
     virtual ~LLSelectFirstFilteredItem() {}
     virtual void doFolder(LLFolderViewFolder* folder);
     virtual void doItem(LLFolderViewItem* item);
-    BOOL wasItemSelected() { return mItemSelected || mFolderSelected; }
+    bool wasItemSelected() { return mItemSelected || mFolderSelected; }
 protected:
-    BOOL mItemSelected;
-    BOOL mFolderSelected;
+    bool mItemSelected;
+    bool mFolderSelected;
 };
 
 class LLOpenFilteredFolders : public LLFolderViewFunctor
@@ -408,15 +408,15 @@ public:
 class LLSaveFolderState : public LLFolderViewFunctor
 {
 public:
-    LLSaveFolderState() : mApply(FALSE) {}
+    LLSaveFolderState() : mApply(false) {}
     virtual ~LLSaveFolderState() {}
     virtual void doFolder(LLFolderViewFolder* folder);
     virtual void doItem(LLFolderViewItem* item) {}
-    void setApply(BOOL apply);
+    void setApply(bool apply);
     void clearOpenFolders() { mOpenFolders.clear(); }
 protected:
     std::set<LLUUID> mOpenFolders;
-    BOOL mApply;
+    bool mApply;
 };
 
 class LLOpenFoldersWithSelection : public LLFolderViewFunctor
diff --git a/indra/llui/llfolderviewitem.cpp b/indra/llui/llfolderviewitem.cpp
index a9e1171444..82cd2483e8 100644
--- a/indra/llui/llfolderviewitem.cpp
+++ b/indra/llui/llfolderviewitem.cpp
@@ -128,18 +128,18 @@ LLFolderViewItem::LLFolderViewItem(const LLFolderViewItem::Params& p)
     mSuffixNeedsRefresh(false),
     mLabelPaddingRight(DEFAULT_LABEL_PADDING_RIGHT),
     mParentFolder( NULL ),
-    mIsSelected( FALSE ),
-    mIsCurSelection( FALSE ),
-    mSelectPending(FALSE),
+    mIsSelected( false ),
+    mIsCurSelection( false ),
+    mSelectPending(false),
     mIsItemCut(false),
     mCutGeneration(0),
     mLabelStyle( LLFontGL::NORMAL ),
-    mHasVisibleChildren(FALSE),
+    mHasVisibleChildren(false),
     mLocalIndentation(p.folder_indentation),
     mIndentation(0),
     mItemHeight(p.item_height),
     mControlLabelRotation(0.f),
-    mDragAndDropTarget(FALSE),
+    mDragAndDropTarget(false),
     mLabel(p.name),
     mRoot(p.root),
     mViewModelItem(p.listener),
@@ -185,7 +185,7 @@ LLFolderViewItem::~LLFolderViewItem()
     gFocusMgr.removeKeyboardFocusWithoutCallback(this);
 }
 
-BOOL LLFolderViewItem::postBuild()
+bool LLFolderViewItem::postBuild()
 {
     LLFolderViewModelItem* vmi = getViewModelItem();
     llassert(vmi); // not supposed to happen, if happens, find out why and fix
@@ -207,7 +207,7 @@ BOOL LLFolderViewItem::postBuild()
     // while LLFolderViewItem::arrange() updates visual part
     mSuffixNeedsRefresh = true;
     mLabelWidthDirty = true;
-    return TRUE;
+    return true;
 }
 
 LLFolderView* LLFolderViewItem::getRoot()
@@ -220,21 +220,21 @@ const LLFolderView* LLFolderViewItem::getRoot() const
     return mRoot;
 }
 // Returns true if this object is a child (or grandchild, etc.) of potential_ancestor.
-BOOL LLFolderViewItem::isDescendantOf( const LLFolderViewFolder* potential_ancestor )
+bool LLFolderViewItem::isDescendantOf( const LLFolderViewFolder* potential_ancestor )
 {
     LLFolderViewItem* root = this;
     while( root->mParentFolder )
     {
         if( root->mParentFolder == potential_ancestor )
         {
-            return TRUE;
+            return true;
         }
         root = root->mParentFolder;
     }
-    return FALSE;
+    return false;
 }
 
-LLFolderViewItem* LLFolderViewItem::getNextOpenNode(BOOL include_children)
+LLFolderViewItem* LLFolderViewItem::getNextOpenNode(bool include_children)
 {
     if (!mParentFolder)
     {
@@ -256,7 +256,7 @@ LLFolderViewItem* LLFolderViewItem::getNextOpenNode(BOOL include_children)
     return itemp;
 }
 
-LLFolderViewItem* LLFolderViewItem::getPreviousOpenNode(BOOL include_children)
+LLFolderViewItem* LLFolderViewItem::getPreviousOpenNode(bool include_children)
 {
     if (!mParentFolder)
     {
@@ -280,19 +280,19 @@ LLFolderViewItem* LLFolderViewItem::getPreviousOpenNode(BOOL include_children)
     return itemp;
 }
 
-BOOL LLFolderViewItem::passedFilter(S32 filter_generation)
+bool LLFolderViewItem::passedFilter(S32 filter_generation)
 {
     return getViewModelItem()->passedFilter(filter_generation);
 }
 
-BOOL LLFolderViewItem::isPotentiallyVisible(S32 filter_generation)
+bool LLFolderViewItem::isPotentiallyVisible(S32 filter_generation)
 {
     if (filter_generation < 0)
     {
         filter_generation = getFolderViewModel()->getFilter().getFirstSuccessGeneration();
     }
     LLFolderViewModelItem* model = getViewModelItem();
-    BOOL visible = model->passedFilter(filter_generation);
+    bool visible = model->passedFilter(filter_generation);
     if (model->getMarkedDirtyGeneration() >= filter_generation)
     {
         // unsure visibility state
@@ -352,8 +352,8 @@ void LLFolderViewItem::refreshSuffix()
 }
 
 // Utility function for LLFolderView
-void LLFolderViewItem::arrangeAndSet(BOOL set_selection,
-                                     BOOL take_keyboard_focus)
+void LLFolderViewItem::arrangeAndSet(bool set_selection,
+                                     bool take_keyboard_focus)
 {
     LLFolderView* root = getRoot();
     if (getParentFolder())
@@ -362,7 +362,7 @@ void LLFolderViewItem::arrangeAndSet(BOOL set_selection,
     }
     if(set_selection)
     {
-        getRoot()->setSelection(this, TRUE, take_keyboard_focus);
+        getRoot()->setSelection(this, true, take_keyboard_focus);
         if(root)
         {
             root->scrollToShowSelection();
@@ -377,7 +377,7 @@ std::set<LLFolderViewItem*> LLFolderViewItem::getSelectionList() const
     return selection;
 }
 
-// addToFolder() returns TRUE if it succeeds. FALSE otherwise
+// addToFolder() returns true if it succeeds. false otherwise
 void LLFolderViewItem::addToFolder(LLFolderViewFolder* folder)
 {
     folder->addItem(this);
@@ -447,7 +447,7 @@ S32 LLFolderViewItem::getTextPad()
 // means 'deselect' for a leaf item. Do this optimization after
 // multiple selection is implemented to make sure it all plays nice
 // together.
-BOOL LLFolderViewItem::setSelection(LLFolderViewItem* selection, BOOL openitem, BOOL take_keyboard_focus)
+bool LLFolderViewItem::setSelection(LLFolderViewItem* selection, bool openitem, bool take_keyboard_focus)
 {
     if (selection == this && !mIsSelected)
     {
@@ -460,7 +460,7 @@ BOOL LLFolderViewItem::setSelection(LLFolderViewItem* selection, BOOL openitem,
     return mIsSelected;
 }
 
-BOOL LLFolderViewItem::changeSelection(LLFolderViewItem* selection, BOOL selected)
+bool LLFolderViewItem::changeSelection(LLFolderViewItem* selection, bool selected)
 {
     if (selection == this)
     {
@@ -472,31 +472,31 @@ BOOL LLFolderViewItem::changeSelection(LLFolderViewItem* selection, BOOL selecte
         {
             selectItem();
         }
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 void LLFolderViewItem::deselectItem(void)
 {
-    mIsSelected = FALSE;
+    mIsSelected = false;
 }
 
 void LLFolderViewItem::selectItem(void)
 {
-    if (mIsSelected == FALSE)
+    if (!mIsSelected)
     {
-        mIsSelected = TRUE;
+        mIsSelected = true;
         getViewModelItem()->selectItem();
     }
 }
 
-BOOL LLFolderViewItem::isMovable()
+bool LLFolderViewItem::isMovable()
 {
     return getViewModelItem()->isItemMovable();
 }
 
-BOOL LLFolderViewItem::isRemovable()
+bool LLFolderViewItem::isRemovable()
 {
     return getViewModelItem()->isItemRemovable();
 }
@@ -515,12 +515,12 @@ void LLFolderViewItem::destroyView()
 
 // Call through to the viewed object and return true if it can be
 // removed.
-//BOOL LLFolderViewItem::removeRecursively(BOOL single_item)
-BOOL LLFolderViewItem::remove()
+//bool LLFolderViewItem::removeRecursively(bool single_item)
+bool LLFolderViewItem::remove()
 {
     if(!isRemovable())
     {
-        return FALSE;
+        return false;
     }
     return getViewModelItem()->removeItem();
 }
@@ -554,21 +554,21 @@ const std::string& LLFolderViewItem::getName( void ) const
 }
 
 // LLView functionality
-BOOL LLFolderViewItem::handleRightMouseDown( S32 x, S32 y, MASK mask )
+bool LLFolderViewItem::handleRightMouseDown( S32 x, S32 y, MASK mask )
 {
     if(!mIsSelected)
     {
-        getRoot()->setSelection(this, FALSE);
+        getRoot()->setSelection(this, false);
     }
     make_ui_sound("UISndClick");
-    return TRUE;
+    return true;
 }
 
-BOOL LLFolderViewItem::handleMouseDown( S32 x, S32 y, MASK mask )
+bool LLFolderViewItem::handleMouseDown( S32 x, S32 y, MASK mask )
 {
     if (LLView::childrenHandleMouseDown(x, y, mask))
     {
-        return TRUE;
+        return true;
     }
 
     // No handler needed for focus lost since this class has no
@@ -587,7 +587,7 @@ BOOL LLFolderViewItem::handleMouseDown( S32 x, S32 y, MASK mask )
         }
         else
         {
-            getRoot()->setSelection(this, FALSE);
+            getRoot()->setSelection(this, false);
         }
         make_ui_sound("UISndClick");
     }
@@ -595,15 +595,15 @@ BOOL LLFolderViewItem::handleMouseDown( S32 x, S32 y, MASK mask )
     {
         // If selected, we reserve the decision of deselecting/reselecting to the mouse up moment.
         // This is necessary so we maintain selection consistent when starting a drag.
-        mSelectPending = TRUE;
+        mSelectPending = true;
     }
 
     mDragStartX = x;
     mDragStartY = y;
-    return TRUE;
+    return true;
 }
 
-BOOL LLFolderViewItem::handleHover( S32 x, S32 y, MASK mask )
+bool LLFolderViewItem::handleHover( S32 x, S32 y, MASK mask )
 {
     mIsMouseOverTitle = (y > (getRect().getHeight() - mItemHeight));
 
@@ -618,7 +618,7 @@ BOOL LLFolderViewItem::handleHover( S32 x, S32 y, MASK mask )
         {
                     // RN: when starting drag and drop, clear out last auto-open
                     root->autoOpenTest(NULL);
-                    root->setShowSelectionContext(TRUE);
+                    root->setShowSelectionContext(true);
 
                     // Release keyboard focus, so that if stuff is dropped into the
                     // world, pressing the delete key won't blow away the inventory
@@ -633,31 +633,31 @@ BOOL LLFolderViewItem::handleHover( S32 x, S32 y, MASK mask )
         }
 
         root->clearHoveredItem();
-        return TRUE;
+        return true;
     }
     else
     {
         LLFolderView* pRoot = getRoot();
         pRoot->setHoveredItem(this);
-        pRoot->setShowSelectionContext(FALSE);
+        pRoot->setShowSelectionContext(false);
         getWindow()->setCursor(UI_CURSOR_ARROW);
         // let parent handle this then...
-        return FALSE;
+        return false;
     }
 }
 
 
-BOOL LLFolderViewItem::handleDoubleClick( S32 x, S32 y, MASK mask )
+bool LLFolderViewItem::handleDoubleClick( S32 x, S32 y, MASK mask )
 {
     openItem();
-    return TRUE;
+    return true;
 }
 
-BOOL LLFolderViewItem::handleMouseUp( S32 x, S32 y, MASK mask )
+bool LLFolderViewItem::handleMouseUp( S32 x, S32 y, MASK mask )
 {
     if (LLView::childrenHandleMouseUp(x, y, mask))
     {
-        return TRUE;
+        return true;
     }
 
     // if mouse hasn't moved since mouse down...
@@ -674,21 +674,21 @@ BOOL LLFolderViewItem::handleMouseUp( S32 x, S32 y, MASK mask )
         }
         else
         {
-            getRoot()->setSelection(this, FALSE);
+            getRoot()->setSelection(this, false);
         }
     }
 
-    mSelectPending = FALSE;
+    mSelectPending = false;
 
     if( hasMouseCapture() )
     {
         if (getRoot())
         {
-        getRoot()->setShowSelectionContext(FALSE);
+        getRoot()->setShowSelectionContext(false);
         }
         gFocusMgr.setMouseCapture( NULL );
     }
-    return TRUE;
+    return true;
 }
 
 void LLFolderViewItem::onMouseLeave(S32 x, S32 y, MASK mask)
@@ -703,18 +703,18 @@ void LLFolderViewItem::onMouseLeave(S32 x, S32 y, MASK mask)
     }
 }
 
-BOOL LLFolderViewItem::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLFolderViewItem::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                          EDragAndDropType cargo_type,
                                          void* cargo_data,
                                          EAcceptance* accept,
                                          std::string& tooltip_msg)
 {
-    BOOL handled = FALSE;
-    BOOL accepted = getViewModelItem()->dragOrDrop(mask,drop,cargo_type,cargo_data, tooltip_msg);
+    bool handled = false;
+    bool accepted = getViewModelItem()->dragOrDrop(mask,drop,cargo_type,cargo_data, tooltip_msg);
         handled = accepted;
         if (accepted)
         {
-            mDragAndDropTarget = TRUE;
+            mDragAndDropTarget = true;
             *accept = ACCEPT_YES_MULTI;
         }
         else
@@ -775,7 +775,7 @@ void LLFolderViewItem::drawOpenFolderArrow(const Params& default_params, const L
     return mIsItemCut;
 }
 
-void LLFolderViewItem::drawHighlight(const BOOL showContent, const BOOL hasKeyboardFocus, const LLUIColor &selectColor, const LLUIColor &flashColor,
+void LLFolderViewItem::drawHighlight(const bool showContent, const bool hasKeyboardFocus, const LLUIColor &selectColor, const LLUIColor &flashColor,
                                                         const LLUIColor &focusOutlineColor, const LLUIColor &mouseOverColor)
 {
     const S32 focus_top = getRect().getHeight();
@@ -789,7 +789,7 @@ void LLFolderViewItem::drawHighlight(const BOOL showContent, const BOOL hasKeybo
     //--------------------------------------------------------------------------------//
     // Draw highlight for selected items
     // Note: Always render "current" item or flashing item, only render other selected
-    // items if mShowSingleSelection is FALSE.
+    // items if mShowSingleSelection is false.
     //
     if (isHighlightAllowed())
 
@@ -833,7 +833,7 @@ void LLFolderViewItem::drawHighlight(const BOOL showContent, const BOOL hasKeybo
                 focus_top,
                 getRect().getWidth() - 2,
                 focus_bottom,
-                focusOutlineColor, FALSE);
+                focusOutlineColor, false);
         }
 
         if (folder_open)
@@ -842,14 +842,14 @@ void LLFolderViewItem::drawHighlight(const BOOL showContent, const BOOL hasKeybo
                 focus_bottom + 1, // overlap with bottom edge of above rect
                 getRect().getWidth() - 2,
                 0,
-                focusOutlineColor, FALSE);
+                focusOutlineColor, false);
             if (showContent && !isFlashing())
             {
                 gl_rect_2d(FOCUS_LEFT,
                     focus_bottom + 1,
                     getRect().getWidth() - 2,
                     0,
-                    bgColor, TRUE);
+                    bgColor, true);
             }
         }
     }
@@ -859,7 +859,7 @@ void LLFolderViewItem::drawHighlight(const BOOL showContent, const BOOL hasKeybo
             focus_top,
             getRect().getWidth() - 2,
             focus_bottom,
-            mouseOverColor, FALSE);
+            mouseOverColor, false);
     }
 
     //--------------------------------------------------------------------------------//
@@ -872,16 +872,16 @@ void LLFolderViewItem::drawHighlight(const BOOL showContent, const BOOL hasKeybo
             focus_top,
             getRect().getWidth() - 2,
             focus_bottom,
-            bgColor, FALSE);
+            bgColor, false);
         if (folder_open)
         {
             gl_rect_2d(FOCUS_LEFT,
                 focus_bottom + 1, // overlap with bottom edge of above rect
                 getRect().getWidth() - 2,
                 0,
-                bgColor, FALSE);
+                bgColor, false);
         }
-        mDragAndDropTarget = FALSE;
+        mDragAndDropTarget = false;
     }
 }
 
@@ -892,13 +892,13 @@ void LLFolderViewItem::drawLabel(const LLFontGL * font, const F32 x, const F32 y
     //
     font->renderUTF8(mLabel, 0, x, y, color,
         LLFontGL::LEFT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW,
-        S32_MAX, getRect().getWidth() - (S32) x - mLabelPaddingRight, &right_x, /*use_ellipses*/TRUE);
+        S32_MAX, getRect().getWidth() - (S32) x - mLabelPaddingRight, &right_x, /*use_ellipses*/true);
 }
 
 void LLFolderViewItem::draw()
 {
-    const BOOL show_context = (getRoot() ? getRoot()->getShowSelectionContext() : FALSE);
-    const BOOL filled = show_context || (getRoot() ? getRoot()->getParentPanel()->hasFocus() : FALSE); // If we have keyboard focus, draw selection filled
+    const bool show_context = (getRoot() ? getRoot()->getShowSelectionContext() : false);
+    const bool filled = show_context || (getRoot() ? getRoot()->getParentPanel()->hasFocus() : false); // If we have keyboard focus, draw selection filled
 
     const Params& default_params = LLUICtrlFactory::getDefaultParams<LLFolderViewItem>();
     const S32 TOP_PAD = default_params.item_top_pad;
@@ -940,22 +940,22 @@ void LLFolderViewItem::draw()
         return;
     }
 
-    std::string::size_type filter_string_length = mViewModelItem->hasFilterStringMatch() ? mViewModelItem->getFilterStringSize() : 0;
+    auto filter_string_length = mViewModelItem->hasFilterStringMatch() ? static_cast<S32>(mViewModelItem->getFilterStringSize()) : 0;
     F32 right_x  = 0;
     F32 y = (F32)getRect().getHeight() - font->getLineHeight() - (F32)mTextPad - (F32)TOP_PAD;
     F32 text_left = (F32)getLabelXPos();
     std::string combined_string = mLabel + mLabelSuffix;
 
     const LLFontGL* suffix_font = getLabelFontForStyle(LLFontGL::NORMAL);
-    S32 filter_offset = mViewModelItem->getFilterStringOffset();
+    S32 filter_offset = static_cast<S32>(mViewModelItem->getFilterStringOffset());
     if (filter_string_length > 0)
     {
         S32 bottom = llfloor(getRect().getHeight() - font->getLineHeight() - 3 - TOP_PAD);
         S32 top = getRect().getHeight() - TOP_PAD;
         if(mLabelSuffix.empty() || (font == suffix_font))
         {
-        S32 left = ll_round(text_left) + font->getWidth(combined_string, 0, mViewModelItem->getFilterStringOffset()) - 2;
-        S32 right = left + font->getWidth(combined_string, mViewModelItem->getFilterStringOffset(), filter_string_length) + 2;
+        S32 left = ll_round(text_left) + font->getWidth(combined_string, 0, static_cast<S32>(mViewModelItem->getFilterStringOffset())) - 2;
+        S32 right = left + font->getWidth(combined_string, static_cast<S32>(mViewModelItem->getFilterStringOffset()), filter_string_length) + 2;
 
         LLUIImage* box_image = default_params.selection_image;
         LLRect box_rect(left, top, right, bottom);
@@ -976,7 +976,7 @@ void LLFolderViewItem::draw()
             if(suffix_filter_length > 0)
             {
                 S32 suffix_offset = llmax(0, filter_offset - (S32)mLabel.size());
-                S32 left = ll_round(text_left) + font->getWidthF32(mLabel, 0, mLabel.size()) + suffix_font->getWidthF32(mLabelSuffix, 0, suffix_offset) - 2;
+                S32 left = ll_round(text_left) + font->getWidthF32(mLabel, 0, static_cast<S32>(mLabel.size())) + suffix_font->getWidthF32(mLabelSuffix, 0, suffix_offset) - 2;
                 S32 right = left + suffix_font->getWidthF32(mLabelSuffix, suffix_offset, suffix_filter_length) + 2;
                 LLUIImage* box_image = default_params.selection_image;
                 LLRect box_rect(left, top, right, bottom);
@@ -1033,7 +1033,7 @@ void LLFolderViewItem::draw()
             if(suffix_filter_length > 0)
             {
                 S32 suffix_offset = llmax(0, filter_offset - (S32)mLabel.size());
-                F32 match_string_left = text_left + font->getWidthF32(mLabel, 0, mLabel.size()) + suffix_font->getWidthF32(mLabelSuffix, 0, suffix_offset + suffix_filter_length) - suffix_font->getWidthF32(mLabelSuffix, suffix_offset, suffix_filter_length);
+                F32 match_string_left = text_left + font->getWidthF32(mLabel, 0, static_cast<S32>(mLabel.size())) + suffix_font->getWidthF32(mLabelSuffix, 0, suffix_offset + suffix_filter_length) - suffix_font->getWidthF32(mLabelSuffix, suffix_offset, suffix_filter_length);
                 F32 yy = (F32)getRect().getHeight() - suffix_font->getLineHeight() - (F32)mTextPad - (F32)TOP_PAD;
                 suffix_font->renderUTF8(mLabelSuffix, suffix_offset, match_string_left, yy, sFilterTextColor,
                     LLFontGL::LEFT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW,
@@ -1071,8 +1071,8 @@ bool LLFolderViewItem::isInSelection() const
 
 LLFolderViewFolder::LLFolderViewFolder( const LLFolderViewItem::Params& p ):
     LLFolderViewItem( p ),
-    mIsOpen(FALSE),
-    mExpanderHighlighted(FALSE),
+    mIsOpen(false),
+    mExpanderHighlighted(false),
     mCurHeight(0.f),
     mTargetHeight(0.f),
     mAutoOpenCountdown(0.f),
@@ -1107,7 +1107,7 @@ LLFolderViewFolder::~LLFolderViewFolder( void )
     gFocusMgr.releaseFocusIfNeeded( this ); // calls onCommit()
 }
 
-// addToFolder() returns TRUE if it succeeds. FALSE otherwise
+// addToFolder() returns true if it succeeds. false otherwise
 void LLFolderViewFolder::addToFolder(LLFolderViewFolder* folder)
 {
     folder->addFolder(this);
@@ -1267,7 +1267,7 @@ S32 LLFolderViewFolder::arrange( S32* width, S32* height )
                 > ll_round(mCurHeight) + mMaxFolderItemOverlap)
             {
                 // hide if beyond current folder height
-                (*fit)->setVisible(FALSE);
+                (*fit)->setVisible(false);
             }
         }
 
@@ -1279,7 +1279,7 @@ S32 LLFolderViewFolder::arrange( S32* width, S32* height )
             if (getRect().getHeight() - (*iit)->getRect().mBottom
                 > ll_round(mCurHeight) + mMaxFolderItemOverlap)
             {
-                (*iit)->setVisible(FALSE);
+                (*iit)->setVisible(false);
             }
         }
     }
@@ -1297,7 +1297,7 @@ S32 LLFolderViewFolder::arrange( S32* width, S32* height )
     return ll_round(mTargetHeight);
 }
 
-BOOL LLFolderViewFolder::needsArrange()
+bool LLFolderViewFolder::needsArrange()
 {
     return mLastArrangeGeneration < getRoot()->getArrangeGeneration();
 }
@@ -1309,17 +1309,17 @@ bool LLFolderViewFolder::descendantsPassedFilter(S32 filter_generation)
 
 // Passes selection information on to children and record selection
 // information if necessary.
-BOOL LLFolderViewFolder::setSelection(LLFolderViewItem* selection, BOOL openitem,
-                                      BOOL take_keyboard_focus)
+bool LLFolderViewFolder::setSelection(LLFolderViewItem* selection, bool openitem,
+                                      bool take_keyboard_focus)
 {
-    BOOL rv = FALSE;
+    bool rv = false;
     if (selection == this)
     {
         if (!isSelected())
         {
             selectItem();
         }
-        rv = TRUE;
+        rv = true;
     }
     else
     {
@@ -1327,9 +1327,9 @@ BOOL LLFolderViewFolder::setSelection(LLFolderViewItem* selection, BOOL openitem
         {
             deselectItem();
         }
-        rv = FALSE;
+        rv = false;
     }
-    BOOL child_selected = FALSE;
+    bool child_selected = false;
 
     for (folders_t::iterator iter = mFolders.begin();
         iter != mFolders.end();)
@@ -1337,8 +1337,8 @@ BOOL LLFolderViewFolder::setSelection(LLFolderViewItem* selection, BOOL openitem
         folders_t::iterator fit = iter++;
         if((*fit)->setSelection(selection, openitem, take_keyboard_focus))
         {
-            rv = TRUE;
-            child_selected = TRUE;
+            rv = true;
+            child_selected = true;
         }
     }
     for (items_t::iterator iter = mItems.begin();
@@ -1347,13 +1347,13 @@ BOOL LLFolderViewFolder::setSelection(LLFolderViewItem* selection, BOOL openitem
         items_t::iterator iit = iter++;
         if((*iit)->setSelection(selection, openitem, take_keyboard_focus))
         {
-            rv = TRUE;
-            child_selected = TRUE;
+            rv = true;
+            child_selected = true;
         }
     }
     if(openitem && child_selected && !mSingleFolderMode)
     {
-        setOpenArrangeRecursively(TRUE);
+        setOpenArrangeRecursively(true);
     }
     return rv;
 }
@@ -1361,15 +1361,15 @@ BOOL LLFolderViewFolder::setSelection(LLFolderViewItem* selection, BOOL openitem
 // This method is used to change the selection of an item.
 // Recursively traverse all children; if 'selection' is 'this' then change
 // the select status if necessary.
-// Returns TRUE if the selection state of this folder, or of a child, was changed.
-BOOL LLFolderViewFolder::changeSelection(LLFolderViewItem* selection, BOOL selected)
+// Returns true if the selection state of this folder, or of a child, was changed.
+bool LLFolderViewFolder::changeSelection(LLFolderViewItem* selection, bool selected)
 {
-    BOOL rv = FALSE;
+    bool rv = false;
     if(selection == this)
     {
         if (isSelected() != selected)
         {
-            rv = TRUE;
+            rv = true;
             if (selected)
             {
                 selectItem();
@@ -1387,7 +1387,7 @@ BOOL LLFolderViewFolder::changeSelection(LLFolderViewItem* selection, BOOL selec
         folders_t::iterator fit = iter++;
         if((*fit)->changeSelection(selection, selected))
         {
-            rv = TRUE;
+            rv = true;
         }
     }
     for (items_t::iterator iter = mItems.begin();
@@ -1396,7 +1396,7 @@ BOOL LLFolderViewFolder::changeSelection(LLFolderViewItem* selection, BOOL selec
         items_t::iterator iit = iter++;
         if((*iit)->changeSelection(selection, selected))
         {
-            rv = TRUE;
+            rv = true;
         }
     }
     return rv;
@@ -1580,7 +1580,8 @@ void LLFolderViewFolder::gatherChildRangeExclusive(LLFolderViewItem* start, LLFo
 
 void LLFolderViewFolder::extendSelectionTo(LLFolderViewItem* new_selection)
 {
-    if (getRoot()->getAllowMultiSelect() == FALSE) return;
+    if (!getRoot()->getAllowMultiSelect())
+        return;
 
     LLFolderViewItem* cur_selected_item = getRoot()->getCurSelectedItem();
     if (cur_selected_item == NULL)
@@ -1591,14 +1592,15 @@ void LLFolderViewFolder::extendSelectionTo(LLFolderViewItem* new_selection)
 
     bool reverse = false;
     LLFolderViewFolder* common_ancestor = getCommonAncestor(cur_selected_item, new_selection, reverse);
-    if (!common_ancestor) return;
+    if (!common_ancestor)
+        return;
 
     LLFolderViewItem* last_selected_item_from_cur = cur_selected_item;
     LLFolderViewFolder* cur_folder = cur_selected_item->getParentFolder();
 
     std::vector<LLFolderViewItem*> items_to_select_forward;
 
-    while(cur_folder != common_ancestor)
+    while (cur_folder != common_ancestor)
     {
         cur_folder->gatherChildRangeExclusive(last_selected_item_from_cur, NULL, reverse, items_to_select_forward);
 
@@ -1610,7 +1612,7 @@ void LLFolderViewFolder::extendSelectionTo(LLFolderViewItem* new_selection)
 
     LLFolderViewItem* last_selected_item_from_new = new_selection;
     cur_folder = new_selection->getParentFolder();
-    while(cur_folder != common_ancestor)
+    while (cur_folder != common_ancestor)
     {
         cur_folder->gatherChildRangeExclusive(last_selected_item_from_new, NULL, !reverse, items_to_select_reverse);
 
@@ -1629,7 +1631,7 @@ void LLFolderViewFolder::extendSelectionTo(LLFolderViewItem* new_selection)
 
     LLFolderView* root = getRoot();
 
-    BOOL selection_reverse = new_selection->isSelected(); //indication that some elements are being deselected
+    bool selection_reverse = new_selection->isSelected(); //indication that some elements are being deselected
 
     // array always go from 'will be selected' to ' will be unselected', iterate
     // in opposite direction to simplify identification of 'point of origin' in
@@ -1639,12 +1641,12 @@ void LLFolderViewFolder::extendSelectionTo(LLFolderViewItem* new_selection)
         ++it)
     {
         LLFolderViewItem* item = *it;
-        BOOL selected = item->isSelected();
+        bool selected = item->isSelected();
         if (!selection_reverse && selected)
         {
             // it is our 'point of origin' where we shift/expand from
             // don't deselect it
-            selection_reverse = TRUE;
+            selection_reverse = true;
         }
         else
         {
@@ -1655,11 +1657,11 @@ void LLFolderViewFolder::extendSelectionTo(LLFolderViewItem* new_selection)
     if (selection_reverse)
     {
         // at some point we reversed selection, first element should be deselected
-        root->changeSelection(last_selected_item_from_cur, FALSE);
+        root->changeSelection(last_selected_item_from_cur, false);
     }
 
     // element we expand to should always be selected
-    root->changeSelection(new_selection, TRUE);
+    root->changeSelection(new_selection, true);
 }
 
 
@@ -1717,11 +1719,11 @@ void LLFolderViewFolder::extractItem( LLFolderViewItem* item, bool deparent_mode
     removeChild(item);
 }
 
-BOOL LLFolderViewFolder::isMovable()
+bool LLFolderViewFolder::isMovable()
 {
     if( !(getViewModelItem()->isItemMovable()) )
     {
-            return FALSE;
+            return false;
         }
 
         for (items_t::iterator iter = mItems.begin();
@@ -1730,7 +1732,7 @@ BOOL LLFolderViewFolder::isMovable()
             items_t::iterator iit = iter++;
             if(!(*iit)->isMovable())
             {
-                return FALSE;
+                return false;
             }
         }
 
@@ -1740,18 +1742,18 @@ BOOL LLFolderViewFolder::isMovable()
             folders_t::iterator fit = iter++;
             if(!(*fit)->isMovable())
             {
-                return FALSE;
+                return false;
             }
         }
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLFolderViewFolder::isRemovable()
+bool LLFolderViewFolder::isRemovable()
 {
     if( !(getViewModelItem()->isItemRemovable()) )
     {
-            return FALSE;
+            return false;
         }
 
         for (items_t::iterator iter = mItems.begin();
@@ -1760,7 +1762,7 @@ BOOL LLFolderViewFolder::isRemovable()
             items_t::iterator iit = iter++;
             if(!(*iit)->isRemovable())
             {
-                return FALSE;
+                return false;
             }
         }
 
@@ -1770,10 +1772,10 @@ BOOL LLFolderViewFolder::isRemovable()
             folders_t::iterator fit = iter++;
             if(!(*fit)->isRemovable())
             {
-                return FALSE;
+                return false;
             }
         }
-    return TRUE;
+    return true;
 }
 
 void LLFolderViewFolder::destroyRoot()
@@ -1793,7 +1795,7 @@ void LLFolderViewFolder::addItem(LLFolderViewItem* item)
     mItems.push_back(item);
 
     item->setRect(LLRect(0, 0, getRect().getWidth(), 0));
-    item->setVisible(FALSE);
+    item->setVisible(false);
 
     addChild(item);
 
@@ -1816,7 +1818,7 @@ void LLFolderViewFolder::addFolder(LLFolderViewFolder* folder)
     mFolders.push_back(folder);
     folder->setOrigin(0, 0);
     folder->reshape(getRect().getWidth(), 0);
-    folder->setVisible(FALSE);
+    folder->setVisible(false);
     // rearrange all descendants too, as our indentation level might have changed
     //folder->requestArrange();
     //requestSort();
@@ -1847,7 +1849,7 @@ void LLFolderViewFolder::toggleOpen()
 }
 
 // Force a folder open or closed
-void LLFolderViewFolder::setOpen(BOOL openitem)
+void LLFolderViewFolder::setOpen(bool openitem)
 {
     if(mSingleFolderMode)
     {
@@ -1864,9 +1866,9 @@ void LLFolderViewFolder::setOpen(BOOL openitem)
     }
 }
 
-void LLFolderViewFolder::setOpenArrangeRecursively(BOOL openitem, ERecurseType recurse)
+void LLFolderViewFolder::setOpenArrangeRecursively(bool openitem, ERecurseType recurse)
 {
-    BOOL was_open = isOpen();
+    bool was_open = isOpen();
     mIsOpen = openitem;
         if(!was_open && openitem)
         {
@@ -1901,17 +1903,17 @@ void LLFolderViewFolder::setOpenArrangeRecursively(BOOL openitem, ERecurseType r
     }
 }
 
-BOOL LLFolderViewFolder::handleDragAndDropFromChild(MASK mask,
-                                                    BOOL drop,
+bool LLFolderViewFolder::handleDragAndDropFromChild(MASK mask,
+                                                    bool drop,
                                                     EDragAndDropType c_type,
                                                     void* cargo_data,
                                                     EAcceptance* accept,
                                                     std::string& tooltip_msg)
 {
-    BOOL accepted = mViewModelItem->dragOrDrop(mask,drop,c_type,cargo_data, tooltip_msg);
+    bool accepted = mViewModelItem->dragOrDrop(mask,drop,c_type,cargo_data, tooltip_msg);
     if (accepted)
     {
-        mDragAndDropTarget = TRUE;
+        mDragAndDropTarget = true;
         *accept = ACCEPT_YES_MULTI;
     }
     else
@@ -1922,7 +1924,7 @@ BOOL LLFolderViewFolder::handleDragAndDropFromChild(MASK mask,
     // drag and drop to child item, so clear pending auto-opens
     getRoot()->autoOpenTest(NULL);
 
-    return TRUE;
+    return true;
 }
 
 void LLFolderViewFolder::openItem( void )
@@ -1965,14 +1967,14 @@ void LLFolderViewFolder::applyFunctorRecursively(LLFolderViewFunctor& functor)
 }
 
 // LLView functionality
-BOOL LLFolderViewFolder::handleDragAndDrop(S32 x, S32 y, MASK mask,
-                                           BOOL drop,
+bool LLFolderViewFolder::handleDragAndDrop(S32 x, S32 y, MASK mask,
+                                           bool drop,
                                            EDragAndDropType cargo_type,
                                            void* cargo_data,
                                            EAcceptance* accept,
                                            std::string& tooltip_msg)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (isOpen())
     {
@@ -1986,11 +1988,11 @@ BOOL LLFolderViewFolder::handleDragAndDrop(S32 x, S32 y, MASK mask,
         LL_DEBUGS("UserInput") << "dragAndDrop handled by LLFolderViewFolder" << LL_ENDL;
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLFolderViewFolder::handleDragAndDropToThisFolder(MASK mask,
-                                                       BOOL drop,
+bool LLFolderViewFolder::handleDragAndDropToThisFolder(MASK mask,
+                                                       bool drop,
                                                        EDragAndDropType cargo_type,
                                                        void* cargo_data,
                                                        EAcceptance* accept,
@@ -2000,14 +2002,14 @@ BOOL LLFolderViewFolder::handleDragAndDropToThisFolder(MASK mask,
     {
         *accept = ACCEPT_NO;
         tooltip_msg = LLTrans::getString("TooltipOutboxCannotDropOnRoot");
-        return TRUE;
+        return true;
     }
 
-    BOOL accepted = getViewModelItem()->dragOrDrop(mask,drop,cargo_type,cargo_data, tooltip_msg);
+    bool accepted = getViewModelItem()->dragOrDrop(mask,drop,cargo_type,cargo_data, tooltip_msg);
 
     if (accepted)
     {
-        mDragAndDropTarget = TRUE;
+        mDragAndDropTarget = true;
         *accept = ACCEPT_YES_MULTI;
     }
     else
@@ -2020,13 +2022,13 @@ BOOL LLFolderViewFolder::handleDragAndDropToThisFolder(MASK mask,
         getRoot()->autoOpenTest(this);
     }
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLFolderViewFolder::handleRightMouseDown( S32 x, S32 y, MASK mask )
+bool LLFolderViewFolder::handleRightMouseDown( S32 x, S32 y, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if( isOpen() )
     {
@@ -2040,11 +2042,11 @@ BOOL LLFolderViewFolder::handleRightMouseDown( S32 x, S32 y, MASK mask )
 }
 
 
-BOOL LLFolderViewFolder::handleHover(S32 x, S32 y, MASK mask)
+bool LLFolderViewFolder::handleHover(S32 x, S32 y, MASK mask)
 {
     mIsMouseOverTitle = (y > (getRect().getHeight() - mItemHeight));
 
-    BOOL handled = LLView::handleHover(x, y, mask);
+    bool handled = LLView::handleHover(x, y, mask);
 
     if (!handled)
     {
@@ -2055,9 +2057,9 @@ BOOL LLFolderViewFolder::handleHover(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLFolderViewFolder::handleMouseDown( S32 x, S32 y, MASK mask )
+bool LLFolderViewFolder::handleMouseDown( S32 x, S32 y, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if( isOpen() )
     {
         handled = childrenHandleMouseDown(x,y,mask) != NULL;
@@ -2068,7 +2070,7 @@ BOOL LLFolderViewFolder::handleMouseDown( S32 x, S32 y, MASK mask )
            && !mSingleFolderMode)
         {
             toggleOpen();
-            handled = TRUE;
+            handled = true;
         }
         else
         {
@@ -2080,9 +2082,9 @@ BOOL LLFolderViewFolder::handleMouseDown( S32 x, S32 y, MASK mask )
     return handled;
 }
 
-BOOL LLFolderViewFolder::handleDoubleClick( S32 x, S32 y, MASK mask )
+bool LLFolderViewFolder::handleDoubleClick( S32 x, S32 y, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if(mSingleFolderMode)
     {
         static LLUICachedControl<bool> double_click_new_window("SingleModeDoubleClickOpenWindow", false);
@@ -2099,7 +2101,7 @@ BOOL LLFolderViewFolder::handleDoubleClick( S32 x, S32 y, MASK mask )
                                 getViewModelItem()->navigateToFolder(false);
                             });
         }
-        return TRUE;
+        return true;
     }
 
     if( isOpen() )
@@ -2114,12 +2116,12 @@ BOOL LLFolderViewFolder::handleDoubleClick( S32 x, S32 y, MASK mask )
             if (double_click_action == 1)
             {
                 getViewModelItem()->navigateToFolder(true);
-                return TRUE;
+                return true;
             }
             if (double_click_action == 2)
             {
                 getViewModelItem()->navigateToFolder(false, true);
-                return TRUE;
+                return true;
             }
         }
         if(mIndentation < x && x < mIndentation + (isCollapsed() ? 0 : mArrowSize) + mTextPad)
@@ -2130,10 +2132,10 @@ BOOL LLFolderViewFolder::handleDoubleClick( S32 x, S32 y, MASK mask )
         }
         else
         {
-            getRoot()->setSelection(this, FALSE);
+            getRoot()->setSelection(this, false);
             toggleOpen();
         }
-        handled = TRUE;
+        handled = true;
     }
     return handled;
 }
@@ -2150,19 +2152,19 @@ void LLFolderViewFolder::draw()
         LLView::draw();
     }
 
-    mExpanderHighlighted = FALSE;
+    mExpanderHighlighted = false;
 }
 
 // this does prefix traversal, as folders are listed above their contents
-LLFolderViewItem* LLFolderViewFolder::getNextFromChild( LLFolderViewItem* item, BOOL include_children )
+LLFolderViewItem* LLFolderViewFolder::getNextFromChild( LLFolderViewItem* item, bool include_children )
 {
-    BOOL found_item = FALSE;
+    bool found_item = false;
 
     LLFolderViewItem* result = NULL;
     // when not starting from a given item, start at beginning
     if(item == NULL)
     {
-        found_item = TRUE;
+        found_item = true;
     }
 
     // find current item among children
@@ -2180,16 +2182,16 @@ LLFolderViewItem* LLFolderViewFolder::getNextFromChild( LLFolderViewItem* item,
         {
             if(item == (*fit))
             {
-                found_item = TRUE;
+                found_item = true;
                 // if we are on downwards traversal
                 if (include_children && (*fit)->isOpen())
                 {
                     // look for first descendant
-                    return (*fit)->getNextFromChild(NULL, TRUE);
+                    return (*fit)->getNextFromChild(NULL, true);
                 }
                 // otherwise advance to next folder
                 ++fit;
-                include_children = TRUE;
+                include_children = true;
                 break;
             }
         }
@@ -2201,7 +2203,7 @@ LLFolderViewItem* LLFolderViewFolder::getNextFromChild( LLFolderViewItem* item,
             {
                 if(item == (*iit))
                 {
-                    found_item = TRUE;
+                    found_item = true;
                     // point to next item
                     ++iit;
                     break;
@@ -2214,7 +2216,7 @@ LLFolderViewItem* LLFolderViewFolder::getNextFromChild( LLFolderViewItem* item,
     {
         // you should never call this method with an item that isn't a child
         // so we should always find something
-        llassert(FALSE);
+        llassert(false);
         return NULL;
     }
 
@@ -2252,22 +2254,22 @@ LLFolderViewItem* LLFolderViewFolder::getNextFromChild( LLFolderViewItem* item,
     {
         // If there are no siblings or children to go to, recurse up one level in the tree
         // and skip children for this folder, as we've already discounted them
-        result = mParentFolder->getNextFromChild(this, FALSE);
+        result = mParentFolder->getNextFromChild(this, false);
     }
 
     return result;
 }
 
 // this does postfix traversal, as folders are listed above their contents
-LLFolderViewItem* LLFolderViewFolder::getPreviousFromChild( LLFolderViewItem* item, BOOL include_children )
+LLFolderViewItem* LLFolderViewFolder::getPreviousFromChild( LLFolderViewItem* item, bool include_children )
 {
-    BOOL found_item = FALSE;
+    bool found_item = false;
 
     LLFolderViewItem* result = NULL;
     // when not starting from a given item, start at end
     if(item == NULL)
     {
-        found_item = TRUE;
+        found_item = true;
     }
 
     // find current item among children
@@ -2285,7 +2287,7 @@ LLFolderViewItem* LLFolderViewFolder::getPreviousFromChild( LLFolderViewItem* it
         {
             if(item == (*iit))
             {
-                found_item = TRUE;
+                found_item = true;
                 // point to next item
                 ++iit;
                 break;
@@ -2299,7 +2301,7 @@ LLFolderViewItem* LLFolderViewFolder::getPreviousFromChild( LLFolderViewItem* it
             {
                 if(item == (*fit))
                 {
-                    found_item = TRUE;
+                    found_item = true;
                     // point to next folder
                     ++fit;
                     break;
@@ -2312,7 +2314,7 @@ LLFolderViewItem* LLFolderViewFolder::getPreviousFromChild( LLFolderViewItem* it
     {
         // you should never call this method with an item that isn't a child
         // so we should always find something
-        llassert(FALSE);
+        llassert(false);
         return NULL;
     }
 
diff --git a/indra/llui/llfolderviewitem.h b/indra/llui/llfolderviewitem.h
index 351613e387..f7ced81274 100644
--- a/indra/llui/llfolderviewitem.h
+++ b/indra/llui/llfolderviewitem.h
@@ -158,21 +158,21 @@ protected:
 
     static LLFontGL* getLabelFontForStyle(U8 style);
 
-    BOOL                        mIsSelected;
+    bool                        mIsSelected;
 
 public:
     static void initClass();
     static void cleanupClass();
 
-    BOOL postBuild();
+    bool postBuild();
 
     virtual void openItem( void );
 
-    void arrangeAndSet(BOOL set_selection, BOOL take_keyboard_focus);
+    void arrangeAndSet(bool set_selection, bool take_keyboard_focus);
 
     virtual ~LLFolderViewItem( void );
 
-    // addToFolder() returns TRUE if it succeeds. FALSE otherwise
+    // addToFolder() returns true if it succeeds. false otherwise
     virtual void addToFolder(LLFolderViewFolder* folder);
 
     // Finds width and height of this object and it's children.  Also
@@ -184,13 +184,13 @@ public:
     S32 getTextPad();
 
     // If 'selection' is 'this' then note that otherwise ignore.
-    // Returns TRUE if this item ends up being selected.
-    virtual BOOL setSelection(LLFolderViewItem* selection, BOOL openitem, BOOL take_keyboard_focus);
+    // Returns true if this item ends up being selected.
+    virtual bool setSelection(LLFolderViewItem* selection, bool openitem, bool take_keyboard_focus);
 
     // This method is used to set the selection state of an item.
     // If 'selection' is 'this' then note selection.
-    // Returns TRUE if the selection state of this item was changed.
-    virtual BOOL changeSelection(LLFolderViewItem* selection, BOOL selected);
+    // Returns true if the selection state of this item was changed.
+    virtual bool changeSelection(LLFolderViewItem* selection, bool selected);
 
     // this method is used to deselect this element
     void deselectItem();
@@ -202,24 +202,24 @@ public:
     virtual std::set<LLFolderViewItem*> getSelectionList() const;
 
     // Returns true is this object and all of its children can be removed (deleted by user)
-    virtual BOOL isRemovable();
+    virtual bool isRemovable();
 
     // Returns true is this object and all of its children can be moved
-    virtual BOOL isMovable();
+    virtual bool isMovable();
 
     // destroys this item recursively
     virtual void destroyView();
 
-    BOOL isSelected() const { return mIsSelected; }
+    bool isSelected() const { return mIsSelected; }
     bool isInSelection() const;
 
-    void setUnselected() { mIsSelected = FALSE; }
+    void setUnselected() { mIsSelected = false; }
 
-    void setIsCurSelection(BOOL select) { mIsCurSelection = select; }
+    void setIsCurSelection(bool select) { mIsCurSelection = select; }
 
-    BOOL getIsCurSelection() const { return mIsCurSelection; }
+    bool getIsCurSelection() const { return mIsCurSelection; }
 
-    BOOL hasVisibleChildren() const { return mHasVisibleChildren; }
+    bool hasVisibleChildren() const { return mHasVisibleChildren; }
 
     // true if object can't have children
     virtual bool isFolderComplete() { return true; }
@@ -229,8 +229,8 @@ public:
 
     // Call through to the viewed object and return true if it can be
     // removed. Returns true if it's removed.
-    //virtual BOOL removeRecursively(BOOL single_item);
-    BOOL remove();
+    //virtual bool removeRecursively(bool single_item);
+    bool remove();
 
     // Build an appropriate context menu for the item.  Flags unused.
     void buildContextMenu(class LLMenuGL& menu, U32 flags);
@@ -249,8 +249,8 @@ public:
 
     void setParentFolder(LLFolderViewFolder* parent) { mParentFolder = parent; }
 
-    LLFolderViewItem* getNextOpenNode( BOOL include_children = TRUE );
-    LLFolderViewItem* getPreviousOpenNode( BOOL include_children = TRUE );
+    LLFolderViewItem* getNextOpenNode( bool include_children = true );
+    LLFolderViewItem* getPreviousOpenNode( bool include_children = true );
 
     const LLFolderViewModelItem* getViewModelItem( void ) const { return mViewModelItem; }
     LLFolderViewModelItem* getViewModelItem( void ) { return mViewModelItem; }
@@ -262,16 +262,16 @@ public:
     void rename(const std::string& new_name);
 
     // Show children
-    virtual void setOpen(BOOL open = TRUE) {};
-    virtual BOOL isOpen() const { return FALSE; }
+    virtual void setOpen(bool open = true) {};
+    virtual bool isOpen() const { return false; }
 
     virtual LLFolderView*   getRoot();
     virtual const LLFolderView* getRoot() const;
-    BOOL            isDescendantOf( const LLFolderViewFolder* potential_ancestor );
+    bool            isDescendantOf( const LLFolderViewFolder* potential_ancestor );
     S32             getIndentation() const { return mIndentation; }
 
-    virtual BOOL    passedFilter(S32 filter_generation = -1);
-    virtual BOOL    isPotentiallyVisible(S32 filter_generation = -1);
+    virtual bool    passedFilter(S32 filter_generation = -1);
+    virtual bool    isPotentiallyVisible(S32 filter_generation = -1);
 
     // refresh information from the object being viewed.
     // refreshes label, suffixes and sets icons. Expensive!
@@ -284,22 +284,22 @@ public:
     bool isSingleFolderMode() { return mSingleFolderMode; }
 
     // LLView functionality
-    virtual BOOL handleRightMouseDown( S32 x, S32 y, MASK mask );
-    virtual BOOL handleMouseDown( S32 x, S32 y, MASK mask );
-    virtual BOOL handleHover( S32 x, S32 y, MASK mask );
-    virtual BOOL handleMouseUp( S32 x, S32 y, MASK mask );
-    virtual BOOL handleDoubleClick( S32 x, S32 y, MASK mask );
+    virtual bool handleRightMouseDown( S32 x, S32 y, MASK mask );
+    virtual bool handleMouseDown( S32 x, S32 y, MASK mask );
+    virtual bool handleHover( S32 x, S32 y, MASK mask );
+    virtual bool handleMouseUp( S32 x, S32 y, MASK mask );
+    virtual bool handleDoubleClick( S32 x, S32 y, MASK mask );
 
     virtual void onMouseLeave(S32 x, S32 y, MASK mask);
 
-    //virtual LLView* findChildView(const std::string& name, BOOL recurse) const { return LLView::findChildView(name, recurse); }
+    //virtual LLView* findChildView(const std::string& name, bool recurse) const { return LLView::findChildView(name, recurse); }
 
     //  virtual void handleDropped();
     virtual void draw();
     void drawOpenFolderArrow(const Params& default_params, const LLUIColor& fg_color);
-    void drawHighlight(const BOOL showContent, const BOOL hasKeyboardFocus, const LLUIColor &selectColor, const LLUIColor &flashColor, const LLUIColor &outlineColor, const LLUIColor &mouseOverColor);
+    void drawHighlight(const bool showContent, const bool hasKeyboardFocus, const LLUIColor &selectColor, const LLUIColor &flashColor, const LLUIColor &outlineColor, const LLUIColor &mouseOverColor);
     void drawLabel(const LLFontGL * font, const F32 x, const F32 y, const LLColor4& color, F32 &right_x);
-    virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    virtual bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                     EDragAndDropType cargo_type,
                                     void* cargo_data,
                                     EAcceptance* accept,
@@ -324,7 +324,7 @@ protected:
     friend class LLUICtrlFactory;
 
     void updateLabelRotation();
-    virtual bool isCollapsed() { return FALSE; }
+    virtual bool isCollapsed() { return false; }
 
 public:
     typedef std::list<LLFolderViewItem*> items_t;
@@ -334,8 +334,8 @@ protected:
     items_t mItems;
     folders_t mFolders;
 
-    BOOL        mIsOpen;
-    BOOL        mExpanderHighlighted;
+    bool        mIsOpen;
+    bool        mExpanderHighlighted;
     F32         mCurHeight;
     F32         mTargetHeight;
     F32         mAutoOpenCountdown;
@@ -356,40 +356,40 @@ public:
 
     virtual ~LLFolderViewFolder( void );
 
-    LLFolderViewItem* getNextFromChild( LLFolderViewItem*, BOOL include_children = TRUE );
-    LLFolderViewItem* getPreviousFromChild( LLFolderViewItem*, BOOL include_children = TRUE  );
+    LLFolderViewItem* getNextFromChild( LLFolderViewItem*, bool include_children = true );
+    LLFolderViewItem* getPreviousFromChild( LLFolderViewItem*, bool include_children = true  );
 
-    // addToFolder() returns TRUE if it succeeds. FALSE otherwise
+    // addToFolder() returns true if it succeeds. false otherwise
     virtual void addToFolder(LLFolderViewFolder* folder);
 
     // Finds width and height of this object and it's children.  Also
     // makes sure that this view and it's children are the right size.
     virtual S32 arrange( S32* width, S32* height );
 
-    BOOL needsArrange();
+    bool needsArrange();
 
     bool descendantsPassedFilter(S32 filter_generation = -1);
 
     // Passes selection information on to children and record
     // selection information if necessary.
-    // Returns TRUE if this object (or a child) ends up being selected.
-    // If 'openitem' is TRUE then folders are opened up along the way to the selection.
-    virtual BOOL setSelection(LLFolderViewItem* selection, BOOL openitem, BOOL take_keyboard_focus = TRUE);
+    // Returns true if this object (or a child) ends up being selected.
+    // If 'openitem' is true then folders are opened up along the way to the selection.
+    virtual bool setSelection(LLFolderViewItem* selection, bool openitem, bool take_keyboard_focus = true);
 
     // This method is used to change the selection of an item.
     // Recursively traverse all children; if 'selection' is 'this' then change
     // the select status if necessary.
-    // Returns TRUE if the selection state of this folder, or of a child, was changed.
-    virtual BOOL changeSelection(LLFolderViewItem* selection, BOOL selected);
+    // Returns true if the selection state of this folder, or of a child, was changed.
+    virtual bool changeSelection(LLFolderViewItem* selection, bool selected);
 
     // this method is used to group select items
     void extendSelectionTo(LLFolderViewItem* selection);
 
     // Returns true is this object and all of its children can be removed.
-    virtual BOOL isRemovable();
+    virtual bool isRemovable();
 
     // Returns true is this object and all of its children can be moved
-    virtual BOOL isMovable();
+    virtual bool isMovable();
 
     // destroys this folder, and all children
     virtual void destroyView();
@@ -416,7 +416,7 @@ public:
     virtual void toggleOpen();
 
     // Force a folder open or closed
-    virtual void setOpen(BOOL openitem = TRUE);
+    virtual void setOpen(bool openitem = true);
 
     // Called when a child is refreshed.
     virtual void requestArrange();
@@ -425,14 +425,14 @@ public:
     // method was written because the list iterators destroy the state
     // of other iterations, thus, we can't arrange while iterating
     // through the children (such as when setting which is selected.
-    virtual void setOpenArrangeRecursively(BOOL openitem, ERecurseType recurse = RECURSE_NO);
+    virtual void setOpenArrangeRecursively(bool openitem, ERecurseType recurse = RECURSE_NO);
 
     // Get the current state of the folder.
-    virtual BOOL isOpen() const { return mIsOpen; }
+    virtual bool isOpen() const { return mIsOpen; }
 
     // special case if an object is dropped on the child.
-    BOOL handleDragAndDropFromChild(MASK mask,
-                                    BOOL drop,
+    bool handleDragAndDropFromChild(MASK mask,
+                                    bool drop,
                                     EDragAndDropType cargo_type,
                                     void* cargo_data,
                                     EAcceptance* accept,
@@ -447,18 +447,18 @@ public:
     virtual void openItem( void );
 
     // LLView functionality
-    virtual BOOL handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL handleRightMouseDown( S32 x, S32 y, MASK mask );
-    virtual BOOL handleMouseDown( S32 x, S32 y, MASK mask );
-    virtual BOOL handleDoubleClick( S32 x, S32 y, MASK mask );
-    virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask,
-                                    BOOL drop,
+    virtual bool handleHover(S32 x, S32 y, MASK mask);
+    virtual bool handleRightMouseDown( S32 x, S32 y, MASK mask );
+    virtual bool handleMouseDown( S32 x, S32 y, MASK mask );
+    virtual bool handleDoubleClick( S32 x, S32 y, MASK mask );
+    virtual bool handleDragAndDrop(S32 x, S32 y, MASK mask,
+                                    bool drop,
                                     EDragAndDropType cargo_type,
                                     void* cargo_data,
                                     EAcceptance* accept,
                                     std::string& tooltip_msg);
-    BOOL handleDragAndDropToThisFolder(MASK mask,
-                                        BOOL drop,
+    bool handleDragAndDropToThisFolder(MASK mask,
+                                        bool drop,
                                        EDragAndDropType cargo_type,
                                        void* cargo_data,
                                        EAcceptance* accept,
diff --git a/indra/llui/llfolderviewmodel.h b/indra/llui/llfolderviewmodel.h
index f02c1e3883..b8d6d89971 100644
--- a/indra/llui/llfolderviewmodel.h
+++ b/indra/llui/llfolderviewmodel.h
@@ -162,24 +162,24 @@ public:
 
     virtual void navigateToFolder(bool new_window = false, bool change_mode = false) = 0;
 
-    virtual BOOL isItemWearable() const { return FALSE; }
+    virtual bool isItemWearable() const { return false; }
 
-    virtual BOOL isItemRenameable() const = 0;
-    virtual BOOL renameItem(const std::string& new_name) = 0;
+    virtual bool isItemRenameable() const = 0;
+    virtual bool renameItem(const std::string& new_name) = 0;
 
-    virtual BOOL isItemMovable( void ) const = 0;       // Can be moved to another folder
+    virtual bool isItemMovable( void ) const = 0;       // Can be moved to another folder
     virtual void move( LLFolderViewModelItem* parent_listener ) = 0;
 
-    virtual BOOL isItemRemovable( bool check_worn = true ) const = 0;       // Can be destroyed
-    virtual BOOL removeItem() = 0;
+    virtual bool isItemRemovable( bool check_worn = true ) const = 0;       // Can be destroyed
+    virtual bool removeItem() = 0;
     virtual void removeBatch(std::vector<LLFolderViewModelItem*>& batch) = 0;
 
     virtual bool isItemCopyable(bool can_copy_as_link = true) const = 0;
-    virtual BOOL copyToClipboard() const = 0;
-    virtual BOOL cutToClipboard() = 0;
+    virtual bool copyToClipboard() const = 0;
+    virtual bool cutToClipboard() = 0;
     virtual bool isCutToClipboard() { return false; };
 
-    virtual BOOL isClipboardPasteable() const = 0;
+    virtual bool isClipboardPasteable() const = 0;
     virtual void pasteFromClipboard() = 0;
     virtual void pasteLinkFromClipboard() = 0;
 
@@ -207,10 +207,10 @@ public:
     virtual void clearChildren() = 0;
 
     // This method will be called to determine if a drop can be
-    // performed, and will set drop to TRUE if a drop is
-    // requested. Returns TRUE if a drop is possible/happened,
-    // otherwise FALSE.
-    virtual BOOL dragOrDrop(MASK mask, BOOL drop,
+    // performed, and will set drop to true if a drop is
+    // requested. Returns true if a drop is possible/happened,
+    // otherwise false.
+    virtual bool dragOrDrop(MASK mask, bool drop,
                             EDragAndDropType cargo_type,
                             void* cargo_data,
                             std::string& tooltip_msg) = 0;
diff --git a/indra/llui/lliconctrl.cpp b/indra/llui/lliconctrl.cpp
index 38c869cd59..83379dd0a9 100644
--- a/indra/llui/lliconctrl.cpp
+++ b/indra/llui/lliconctrl.cpp
@@ -86,17 +86,17 @@ void LLIconCtrl::draw()
     LLUICtrl::draw();
 }
 
-BOOL LLIconCtrl::handleHover(S32 x, S32 y, MASK mask)
+bool LLIconCtrl::handleHover(S32 x, S32 y, MASK mask)
 {
     if (mInteractable && getEnabled())
     {
         getWindow()->setCursor(UI_CURSOR_HAND);
-        return TRUE;
+        return true;
     }
     return LLUICtrl::handleHover(x, y, mask);
 }
 
-void LLIconCtrl::onVisibilityChange(BOOL new_visibility)
+void LLIconCtrl::onVisibilityChange(bool new_visibility)
 {
     LLUICtrl::onVisibilityChange(new_visibility);
     if (mPriority == LLGLTexture::BOOST_ICON)
diff --git a/indra/llui/lliconctrl.h b/indra/llui/lliconctrl.h
index 240fe3a74c..aae1d1d572 100644
--- a/indra/llui/lliconctrl.h
+++ b/indra/llui/lliconctrl.h
@@ -71,10 +71,10 @@ public:
     virtual void    draw();
 
     // llview overrides
-    virtual BOOL handleHover(S32 x, S32 y, MASK mask);
+    virtual bool handleHover(S32 x, S32 y, MASK mask);
 
     // lluictrl overrides
-    void onVisibilityChange(BOOL new_visibility);
+    void onVisibilityChange(bool new_visibility);
     virtual void    setValue(const LLSD& value );
 
     std::string getImageName() const;
diff --git a/indra/llui/llkeywords.cpp b/indra/llui/llkeywords.cpp
index 1ac1e41727..5e184b5ddb 100644
--- a/indra/llui/llkeywords.cpp
+++ b/indra/llui/llkeywords.cpp
@@ -39,7 +39,7 @@ inline bool LLKeywordToken::isHead(const llwchar* s) const
     // strncmp is much faster than string compare
     bool res = true;
     const llwchar* t = mToken.c_str();
-    S32 len = mToken.size();
+    auto len = mToken.size();
     for (S32 i=0; i<len; i++)
     {
         if (s[i] != t[i])
@@ -55,7 +55,7 @@ inline bool LLKeywordToken::isTail(const llwchar* s) const
 {
     bool res = true;
     const llwchar* t = mDelimiter.c_str();
-    S32 len = mDelimiter.size();
+    auto len = mDelimiter.size();
     for (S32 i=0; i<len; i++)
     {
         if (s[i] != t[i])
@@ -134,7 +134,7 @@ std::string LLKeywords::getArguments(LLSD& arguments)
 
     if (arguments.isArray())
     {
-        U32 argsCount = arguments.size();
+        auto argsCount = arguments.size();
         LLSD::array_iterator arrayIt = arguments.beginArray();
         for ( ; arrayIt != arguments.endArray(); ++arrayIt)
         {
@@ -489,7 +489,7 @@ void LLKeywords::findSegments(std::vector<LLTextSegmentPtr>* seg_list, const LLW
         return;
     }
 
-    S32 text_len = wtext.size() + 1;
+    S32 text_len = static_cast<S32>(wtext.size()) + 1;
 
     seg_list->push_back( new LLNormalTextSegment( style, 0, text_len, editor ) );
 
@@ -525,7 +525,7 @@ void LLKeywords::findSegments(std::vector<LLTextSegmentPtr>* seg_list, const LLW
 
             // Line start tokens
             {
-                BOOL line_done = FALSE;
+                bool line_done = false;
                 for (token_list_t::iterator iter = mLineTokenList.begin();
                      iter != mLineTokenList.end(); ++iter)
                 {
@@ -542,7 +542,7 @@ void LLKeywords::findSegments(std::vector<LLTextSegmentPtr>* seg_list, const LLW
 
                         //create segments from seg_start to seg_end
                         insertSegments(wtext, *seg_list,cur_token, text_len, seg_start, seg_end, style, editor);
-                        line_done = TRUE; // to break out of second loop.
+                        line_done = true; // to break out of second loop.
                         break;
                     }
                 }
@@ -707,16 +707,16 @@ void LLKeywords::insertSegments(const LLWString& wtext, std::vector<LLTextSegmen
     {
         if (pos!=seg_start)
         {
-            LLTextSegmentPtr text_segment = new LLNormalTextSegment(cur_token_style, seg_start, pos, editor);
+            LLTextSegmentPtr text_segment = new LLNormalTextSegment(cur_token_style, seg_start, static_cast<S32>(pos), editor);
             text_segment->setToken( cur_token );
             insertSegment( seg_list, text_segment, text_len, style, editor);
         }
 
-        LLTextSegmentPtr text_segment = new LLLineBreakTextSegment(style, pos);
+        LLTextSegmentPtr text_segment = new LLLineBreakTextSegment(style, static_cast<S32>(pos));
         text_segment->setToken( cur_token );
         insertSegment( seg_list, text_segment, text_len, style, editor);
 
-        seg_start = pos+1;
+        seg_start = static_cast<S32>(pos) + 1;
         pos = wtext.find('\n',seg_start);
     }
 
@@ -803,9 +803,9 @@ void LLKeywords::dump()
 void LLKeywordToken::dump()
 {
     LL_INFOS() << "[" <<
-        mColor.mV[VX] << ", " <<
-        mColor.mV[VY] << ", " <<
-        mColor.mV[VZ] << "] [" <<
+        mColor.mV[VRED] << ", " <<
+        mColor.mV[VGREEN] << ", " <<
+        mColor.mV[VBLUE] << "] [" <<
         wstring_to_utf8str(mToken) << "]" <<
         LL_ENDL;
 }
diff --git a/indra/llui/llkeywords.h b/indra/llui/llkeywords.h
index 9dcdea121b..f498b3ddee 100644
--- a/indra/llui/llkeywords.h
+++ b/indra/llui/llkeywords.h
@@ -82,8 +82,8 @@ public:
     {
     }
 
-    S32                 getLengthHead() const   { return mToken.size(); }
-    S32                 getLengthTail() const   { return mDelimiter.size(); }
+    S32                 getLengthHead() const   { return static_cast<S32>(mToken.size()); }
+    S32                 getLengthTail() const   { return static_cast<S32>(mDelimiter.size()); }
     bool                isHead(const llwchar* s) const;
     bool                isTail(const llwchar* s) const;
     const LLWString&    getToken() const        { return mToken; }
diff --git a/indra/llui/lllayoutstack.cpp b/indra/llui/lllayoutstack.cpp
index 13d6faa673..6db9f64a97 100644
--- a/indra/llui/lllayoutstack.cpp
+++ b/indra/llui/lllayoutstack.cpp
@@ -61,7 +61,7 @@ LLLayoutPanel::LLLayoutPanel(const Params& p)
     mMinDim(p.min_dim),
     mAutoResize(p.auto_resize),
     mUserResize(p.user_resize),
-    mCollapsed(FALSE),
+    mCollapsed(false),
     mCollapseAmt(0.f),
     mVisibleAmt(1.f), // default to fully visible
     mResizeBar(NULL),
@@ -144,16 +144,14 @@ void LLLayoutPanel::setOrientation( LLView::EOrientation orientation )
         ? getRect().getWidth()
         : getRect().getHeight()));
 
-    if (mAutoResize == FALSE
-        && mUserResize == TRUE
-        && mMinDim == -1 )
+    if (!mAutoResize && mUserResize && mMinDim == -1)
     {
         setMinDim(layout_dim);
     }
     mTargetDim = llmax(layout_dim, getMinDim());
 }
 
-void LLLayoutPanel::setVisible( BOOL visible )
+void LLLayoutPanel::setVisible( bool visible )
 {
     if (visible != getVisible())
     {
@@ -166,11 +164,11 @@ void LLLayoutPanel::setVisible( BOOL visible )
     LLPanel::setVisible(visible);
 }
 
-void LLLayoutPanel::reshape( S32 width, S32 height, BOOL called_from_parent /*= TRUE*/ )
+void LLLayoutPanel::reshape( S32 width, S32 height, bool called_from_parent /*= true*/ )
 {
     if (width == getRect().getWidth() && height == getRect().getHeight() && !LLView::sForceReshape) return;
 
-    if (!mIgnoreReshape && mAutoResize == false)
+    if (!mIgnoreReshape && !mAutoResize)
     {
         mTargetDim = (mOrientation == LLLayoutStack::HORIZONTAL) ? width : height;
         LLLayoutStack* stackp = dynamic_cast<LLLayoutStack*>(getParent());
@@ -314,10 +312,10 @@ void LLLayoutStack::removeChild(LLView* view)
     }
 }
 
-BOOL LLLayoutStack::postBuild()
+bool LLLayoutStack::postBuild()
 {
     updateLayout();
-    return TRUE;
+    return true;
 }
 
 bool LLLayoutStack::addChild(LLView* child, S32 tab_group)
@@ -330,7 +328,7 @@ bool LLLayoutStack::addChild(LLView* child, S32 tab_group)
         createResizeBar(panelp);
         mNeedsLayout = true;
     }
-    BOOL result = LLView::addChild(child, tab_group);
+    bool result = LLView::addChild(child, tab_group);
 
     updateFractionalSizes();
     return result;
@@ -344,11 +342,11 @@ void LLLayoutStack::addPanel(LLLayoutPanel* panel, EAnimate animate)
     if (animate == ANIMATE)
     {
         panel->mVisibleAmt = 0.f;
-        panel->setVisible(TRUE);
+        panel->setVisible(true);
     }
 }
 
-void LLLayoutStack::collapsePanel(LLPanel* panel, BOOL collapsed)
+void LLLayoutStack::collapsePanel(LLPanel* panel, bool collapsed)
 {
     LLLayoutPanel* panel_container = findEmbeddedPanel(panel);
     if (!panel_container) return;
@@ -615,7 +613,7 @@ void LLLayoutStack::createResizeBar(LLLayoutPanel* panelp)
                 border_params.shadow_dark_color = LLUIColorTable::instance().getColor("ResizebarBorderDark");
 
                 addBorder(border_params);
-                setBorderVisible(TRUE);
+                setBorderVisible(true);
 
                 LLImagePanel::Params image_panel;
                 mDragHandleImage = LLUI::getUIImage(LLResizeBar::RIGHT == mSide ? "Vertical Drag Handle" : "Horizontal Drag Handle");
@@ -628,7 +626,7 @@ void LLLayoutStack::createResizeBar(LLLayoutPanel* panelp)
 
             //if (mShowDragHandle)
             //{
-            //  setBackgroundVisible(TRUE);
+            //  setBackgroundVisible(true);
             //  setTransparentColor(LLUIColorTable::instance().getColor("ResizebarBody"));
             //}
 
@@ -985,7 +983,7 @@ void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect&
     //normalizeFractionalSizes();
 }
 
-void LLLayoutStack::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLLayoutStack::reshape(S32 width, S32 height, bool called_from_parent)
 {
     mNeedsLayout = true;
     LLView::reshape(width, height, called_from_parent);
@@ -998,7 +996,7 @@ void LLLayoutStack::updateResizeBarLimits()
     {
         if (!visible_panelp->getVisible() || visible_panelp->mCollapsed)
         {
-            visible_panelp->mResizeBar->setVisible(FALSE);
+            visible_panelp->mResizeBar->setVisible(false);
             continue;
         }
 
@@ -1008,14 +1006,14 @@ void LLLayoutStack::updateResizeBarLimits()
             && (visible_panelp->mAutoResize || visible_panelp->mUserResize)                         // current panel is resizable
             && (previous_visible_panelp->mAutoResize || previous_visible_panelp->mUserResize))      // previous panel is resizable
         {
-            visible_panelp->mResizeBar->setVisible(TRUE);
+            visible_panelp->mResizeBar->setVisible(true);
             S32 previous_panel_headroom = previous_visible_panelp->getVisibleDim() - previous_visible_panelp->getRelevantMinDim();
             visible_panelp->mResizeBar->setResizeLimits(visible_panelp->getRelevantMinDim(),
                                                         visible_panelp->getVisibleDim() + previous_panel_headroom);
         }
         else
         {
-            visible_panelp->mResizeBar->setVisible(FALSE);
+            visible_panelp->mResizeBar->setVisible(false);
         }
 
         previous_visible_panelp = visible_panelp;
diff --git a/indra/llui/lllayoutstack.h b/indra/llui/lllayoutstack.h
index 884850285a..9e5f8048ba 100644
--- a/indra/llui/lllayoutstack.h
+++ b/indra/llui/lllayoutstack.h
@@ -71,9 +71,9 @@ public:
     /*virtual*/ void draw();
     /*virtual*/ void deleteAllChildren();
     /*virtual*/ void removeChild(LLView*);
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ bool addChild(LLView* child, S32 tab_group = 0);
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
 
 
     static LLView* fromXML(LLXMLNodePtr node, LLView *parent, LLXMLNodePtr output_node = NULL);
@@ -85,8 +85,8 @@ public:
     } EAnimate;
 
     void addPanel(LLLayoutPanel* panel, EAnimate animate = NO_ANIMATE);
-    void collapsePanel(LLPanel* panel, BOOL collapsed = TRUE);
-    S32 getNumPanels() { return mPanels.size(); }
+    void collapsePanel(LLPanel* panel, bool collapsed = true);
+    S32 getNumPanels() { return static_cast<S32>(mPanels.size()); }
 
     void updateLayout();
 
@@ -156,10 +156,10 @@ public:
 
     void handleReshape(const LLRect& new_rect, bool by_user);
 
-    void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    void reshape(S32 width, S32 height, bool called_from_parent = true);
 
 
-    void setVisible(BOOL visible);
+    void setVisible(bool visible);
 
     S32 getLayoutDim() const;
     S32 getTargetDim() const;
diff --git a/indra/llui/lllineeditor.cpp b/indra/llui/lllineeditor.cpp
index 05de46b852..fa71c7704d 100644
--- a/indra/llui/lllineeditor.cpp
+++ b/indra/llui/lllineeditor.cpp
@@ -74,7 +74,7 @@ static LLDefaultChildRegistry::Register<LLLineEditor> r1("line_editor");
 
 // Compiler optimization, generate extern template
 template class LLLineEditor* LLView::getChild<class LLLineEditor>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 
 //
 // Member functions
@@ -131,10 +131,10 @@ LLLineEditor::LLLineEditor(const LLLineEditor::Params& p)
     mTextLeftEdge(0),       // computed in updateTextPadding() below
     mTextRightEdge(0),      // computed in updateTextPadding() below
     mCommitOnFocusLost( p.commit_on_focus_lost ),
-    mKeystrokeOnEsc(FALSE),
+    mKeystrokeOnEsc(false),
     mRevertOnEsc( p.revert_on_esc ),
     mKeystrokeCallback( p.keystroke_callback() ),
-    mIsSelecting( FALSE ),
+    mIsSelecting( false ),
     mSelectionStart( 0 ),
     mSelectionEnd( 0 ),
     mLastSelectionX(-1),
@@ -142,7 +142,7 @@ LLLineEditor::LLLineEditor(const LLLineEditor::Params& p)
     mLastSelectionStart(-1),
     mLastSelectionEnd(-1),
     mBorderThickness( 0 ),
-    mIgnoreArrowKeys( FALSE ),
+    mIgnoreArrowKeys( false ),
     mIgnoreTab( p.ignore_tab ),
     mDrawAsterixes( p.is_password ),
     mAllowEmoji( p.allow_emoji ),
@@ -150,17 +150,17 @@ LLLineEditor::LLLineEditor(const LLLineEditor::Params& p)
     mSpellCheckStart(-1),
     mSpellCheckEnd(-1),
     mSelectAllonFocusReceived( p.select_on_focus ),
-    mSelectAllonCommit( TRUE ),
-    mPassDelete(FALSE),
-    mReadOnly(FALSE),
+    mSelectAllonCommit( true ),
+    mPassDelete(false),
+    mReadOnly(false),
     mBgImage( p.background_image ),
     mBgImageDisabled( p.background_image_disabled ),
     mBgImageFocused( p.background_image_focused ),
     mShowImageFocused( p.bg_image_always_focused ),
     mShowLabelFocused( p.show_label_focused ),
     mUseBgColor(p.use_bg_color),
-    mHaveHistory(FALSE),
-    mReplaceNewlinesWithSpaces( TRUE ),
+    mHaveHistory(false),
+    mReplaceNewlinesWithSpaces( true ),
     mPrevalidator(p.prevalidator()),
     mInputPrevalidator(p.input_prevalidator()),
     mLabel(p.label),
@@ -177,7 +177,7 @@ LLLineEditor::LLLineEditor(const LLLineEditor::Params& p)
 {
     llassert( mMaxLengthBytes > 0 );
 
-    LLUICtrl::setEnabled(TRUE);
+    LLUICtrl::setEnabled(true);
     setEnabled(p.enabled);
 
     mScrollTimer.reset();
@@ -221,7 +221,7 @@ LLLineEditor::LLLineEditor(const LLLineEditor::Params& p)
 
 LLLineEditor::~LLLineEditor()
 {
-    mCommitOnFocusLost = FALSE;
+    mCommitOnFocusLost = false;
 
     // Make sure no context menu linger around once the widget is deleted
     LLContextMenu* menu = static_cast<LLContextMenu*>(mContextMenuHandle.get());
@@ -238,7 +238,7 @@ LLLineEditor::~LLLineEditor()
 void LLLineEditor::initFromParams(const LLLineEditor::Params& params)
 {
     LLUICtrl::initFromParams(params);
-    LLUICtrl::setEnabled(TRUE);
+    LLUICtrl::setEnabled(true);
     setEnabled(params.enabled);
 }
 
@@ -287,9 +287,9 @@ void LLLineEditor::onCommit()
     if (mSelectAllonCommit) selectAll();
 }
 
-// Returns TRUE if user changed value at all
+// Returns true if user changed value at all
 // virtual
-BOOL LLLineEditor::isDirty() const
+bool LLLineEditor::isDirty() const
 {
     return mText.getString() != mPrevText;
 }
@@ -350,14 +350,14 @@ void LLLineEditor::updateHistory()
     }
 }
 
-void LLLineEditor::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLLineEditor::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLUICtrl::reshape(width, height, called_from_parent);
     updateTextPadding(); // For clamping side-effect.
     setCursor(mCursorPos); // For clamping side-effect.
 }
 
-void LLLineEditor::setEnabled(BOOL enabled)
+void LLLineEditor::setEnabled(bool enabled)
 {
     mReadOnly = !enabled;
     setTabStop(!mReadOnly);
@@ -412,7 +412,7 @@ void LLLineEditor::setText(const LLStringExplicit &new_text, bool use_size_limit
 
     // Check to see if entire field is selected.
     S32 len = mText.length();
-    BOOL all_selected = (len > 0)
+    bool all_selected = (len > 0)
         && (( mSelectionStart == 0 && mSelectionEnd == len )
             || ( mSelectionStart == len && mSelectionEnd == 0 ));
 
@@ -529,7 +529,7 @@ void LLLineEditor::resetScrollPosition()
     setCursor(getCursor());
 }
 
-BOOL LLLineEditor::canDeselect() const
+bool LLLineEditor::canDeselect() const
 {
     return hasSelection();
 }
@@ -538,13 +538,13 @@ void LLLineEditor::deselect()
 {
     mSelectionStart = 0;
     mSelectionEnd = 0;
-    mIsSelecting = FALSE;
+    mIsSelecting = false;
 }
 
 
 void LLLineEditor::startSelection()
 {
-    mIsSelecting = TRUE;
+    mIsSelecting = true;
     mSelectionStart = getCursor();
     mSelectionEnd = getCursor();
 }
@@ -553,14 +553,14 @@ void LLLineEditor::endSelection()
 {
     if( mIsSelecting )
     {
-        mIsSelecting = FALSE;
+        mIsSelecting = false;
         mSelectionEnd = getCursor();
     }
 }
 
-BOOL LLLineEditor::canSelectAll() const
+bool LLLineEditor::canSelectAll() const
 {
-    return TRUE;
+    return true;
 }
 
 void LLLineEditor::selectAll()
@@ -574,7 +574,7 @@ void LLLineEditor::selectAll()
     mSelectionEnd = 0;
     setCursor(mSelectionEnd);
     //mScrollHPos = 0;
-    mIsSelecting = TRUE;
+    mIsSelecting = true;
     updatePrimary();
 }
 
@@ -590,7 +590,7 @@ const std::string& LLLineEditor::getSuggestion(U32 index) const
 
 U32 LLLineEditor::getSuggestionCount() const
 {
-    return mSuggestionList.size();
+    return static_cast<U32>(mSuggestionList.size());
 }
 
 void LLLineEditor::replaceWithSuggestion(U32 index)
@@ -680,9 +680,9 @@ void LLLineEditor::onSpellCheckSettingsChange()
     mSpellCheckStart = mSpellCheckEnd = -1;
 }
 
-BOOL LLLineEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLLineEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
-    setFocus( TRUE );
+    setFocus( true );
     mTripleClickTimer.setTimerExpirySec(TRIPLE_CLICK_INTERVAL);
 
     if (mSelectionEnd == 0 && mSelectionStart == mText.length())
@@ -694,7 +694,7 @@ BOOL LLLineEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
     {
         const LLWString& wtext = mText.getWString();
 
-        BOOL doSelectAll = TRUE;
+        bool doSelectAll = true;
 
         // Select the word we're on
         if( LLWStringUtil::isPartOfWord( wtext[mCursorPos] ) )
@@ -729,7 +729,7 @@ BOOL LLLineEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
     // We don't want handleMouseUp() to "finish" the selection (and thereby
     // set mSelectionEnd to where the mouse is), so we finish the selection
     // here.
-    mIsSelecting = FALSE;
+    mIsSelecting = false;
 
     // delay cursor flashing
     mKeystrokeTimer.reset();
@@ -737,15 +737,15 @@ BOOL LLLineEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
     // take selection to 'primary' clipboard
     updatePrimary();
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLLineEditor::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLLineEditor::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // Check first whether the "clear search" button wants to deal with this.
     if(childrenHandleMouseDown(x, y, mask) != NULL)
     {
-        return TRUE;
+        return true;
     }
 
     if (!mSelectAllonFocusReceived
@@ -757,7 +757,7 @@ BOOL LLLineEditor::handleMouseDown(S32 x, S32 y, MASK mask)
         if (mask & MASK_SHIFT)
         {
             // assume we're starting a drag select
-            mIsSelecting = TRUE;
+            mIsSelecting = true;
 
             // Handle selection extension
             S32 old_cursor_pos = getCursor();
@@ -813,14 +813,14 @@ BOOL LLLineEditor::handleMouseDown(S32 x, S32 y, MASK mask)
                 // We don't want handleMouseUp() to "finish" the selection (and thereby
                 // set mSelectionEnd to where the mouse is), so we finish the selection
                 // here.
-                mIsSelecting = FALSE;
+                mIsSelecting = false;
             }
         }
 
         gFocusMgr.setMouseCapture( this );
     }
 
-    setFocus(TRUE);
+    setFocus(true);
 
     // delay cursor flashing
     mKeystrokeTimer.reset();
@@ -828,40 +828,40 @@ BOOL LLLineEditor::handleMouseDown(S32 x, S32 y, MASK mask)
     if (mMouseDownSignal)
         (*mMouseDownSignal)(this,x,y,mask);
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLLineEditor::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
+bool LLLineEditor::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
 {
         // LL_INFOS() << "MiddleMouseDown" << LL_ENDL;
-    setFocus( TRUE );
+    setFocus( true );
     if( canPastePrimary() )
     {
         setCursorAtLocalPos(x);
         pastePrimary();
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLLineEditor::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLLineEditor::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    setFocus(TRUE);
+    setFocus(true);
     if (!LLUICtrl::handleRightMouseDown(x, y, mask) && getShowContextMenu())
     {
         showContextMenu(x, y);
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLLineEditor::handleHover(S32 x, S32 y, MASK mask)
+bool LLLineEditor::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     // Check first whether the "clear search" button wants to deal with this.
     if(!hasMouseCapture())
     {
         if(childrenHandleHover(x, y, mask) != NULL)
         {
-            return TRUE;
+            return true;
         }
     }
 
@@ -904,34 +904,34 @@ BOOL LLLineEditor::handleHover(S32 x, S32 y, MASK mask)
 
         getWindow()->setCursor(UI_CURSOR_IBEAM);
         LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (active)" << LL_ENDL;
-        handled = TRUE;
+        handled = true;
     }
 
     if( !handled  )
     {
         getWindow()->setCursor(UI_CURSOR_IBEAM);
         LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (inactive)" << LL_ENDL;
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
 }
 
 
-BOOL LLLineEditor::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLLineEditor::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     if( hasMouseCapture() )
     {
         gFocusMgr.setMouseCapture( NULL );
-        handled = TRUE;
+        handled = true;
     }
 
     // Check first whether the "clear search" button wants to deal with this.
     if(!handled && childrenHandleMouseUp(x, y, mask) != NULL)
     {
-        return TRUE;
+        return true;
     }
 
     if( mIsSelecting )
@@ -939,7 +939,7 @@ BOOL LLLineEditor::handleMouseUp(S32 x, S32 y, MASK mask)
         setCursorAtLocalPos( x );
         mSelectionEnd = getCursor();
 
-        handled = TRUE;
+        handled = true;
     }
 
     if( handled )
@@ -994,23 +994,23 @@ void LLLineEditor::addChar(const llwchar uni_char)
         mText.erase(getCursor(), 1);
     }
 
-    S32 cur_bytes = mText.getString().size();
+    S32 cur_bytes = static_cast<S32>(mText.getString().size());
 
     S32 new_bytes = wchar_utf8_length(new_c);
 
-    BOOL allow_char = TRUE;
+    bool allow_char = true;
 
     // Check byte length limit
     if ((new_bytes + cur_bytes) > mMaxLengthBytes)
     {
-        allow_char = FALSE;
+        allow_char = false;
     }
     else if (mMaxLengthChars)
     {
-        S32 wide_chars = mText.getWString().size();
+        auto wide_chars = mText.getWString().size();
         if ((wide_chars + 1) > mMaxLengthChars)
         {
-            allow_char = FALSE;
+            allow_char = false;
         }
     }
 
@@ -1074,7 +1074,7 @@ void LLLineEditor::setSelection(S32 start, S32 end)
 {
     S32 len = mText.length();
 
-    mIsSelecting = TRUE;
+    mIsSelecting = true;
 
     // JC, yes, this seems odd, but I think you have to presume a
     // selection dragged from the end towards the start.
@@ -1083,7 +1083,7 @@ void LLLineEditor::setSelection(S32 start, S32 end)
     setCursor(start);
 }
 
-void LLLineEditor::setDrawAsterixes(BOOL b)
+void LLLineEditor::setDrawAsterixes(bool b)
 {
     mDrawAsterixes = b;
     updateAllowingLanguageInput();
@@ -1118,13 +1118,13 @@ S32 LLLineEditor::nextWordPos(S32 cursorPos) const
 }
 
 
-BOOL LLLineEditor::handleSelectionKey(KEY key, MASK mask)
+bool LLLineEditor::handleSelectionKey(KEY key, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if( mask & MASK_SHIFT )
     {
-        handled = TRUE;
+        handled = true;
 
         switch( key )
         {
@@ -1177,7 +1177,7 @@ BOOL LLLineEditor::handleSelectionKey(KEY key, MASK mask)
             }
 
         default:
-            handled = FALSE;
+            handled = false;
             break;
         }
     }
@@ -1208,7 +1208,7 @@ void LLLineEditor::deleteSelection()
     }
 }
 
-BOOL LLLineEditor::canCut() const
+bool LLLineEditor::canCut() const
 {
     return !mReadOnly && !mDrawAsterixes && hasSelection();
 }
@@ -1232,7 +1232,7 @@ void LLLineEditor::cut()
         deleteSelection();
 
         // Validate new string and rollback the if needed.
-        BOOL need_to_rollback = mPrevalidator && !mPrevalidator.validate(mText.getWString());
+        bool need_to_rollback = mPrevalidator && !mPrevalidator.validate(mText.getWString());
         if (need_to_rollback)
         {
             rollback.doRollback( this );
@@ -1246,7 +1246,7 @@ void LLLineEditor::cut()
     }
 }
 
-BOOL LLLineEditor::canCopy() const
+bool LLLineEditor::canCopy() const
 {
     return !mDrawAsterixes && hasSelection();
 }
@@ -1263,7 +1263,7 @@ void LLLineEditor::copy()
     }
 }
 
-BOOL LLLineEditor::canPaste() const
+bool LLLineEditor::canPaste() const
 {
     return !mReadOnly && LLClipboard::instance().isTextAvailable();
 }
@@ -1351,7 +1351,7 @@ void LLLineEditor::pasteHelper(bool is_primary)
 
             if (mMaxLengthChars)
             {
-                U32 available_chars = mMaxLengthChars - mText.getWString().size();
+                auto available_chars = mMaxLengthChars - mText.getWString().size();
 
                 if (available_chars < clean_string.size())
                 {
@@ -1366,7 +1366,7 @@ void LLLineEditor::pasteHelper(bool is_primary)
             deselect();
 
             // Validate new string and rollback the if needed.
-            BOOL need_to_rollback = mPrevalidator && !mPrevalidator.validate(mText.getWString());
+            bool need_to_rollback = mPrevalidator && !mPrevalidator.validate(mText.getWString());
             if (need_to_rollback)
             {
                 rollback.doRollback( this );
@@ -1392,7 +1392,7 @@ void LLLineEditor::copyPrimary()
     }
 }
 
-BOOL LLLineEditor::canPastePrimary() const
+bool LLLineEditor::canPastePrimary() const
 {
     return !mReadOnly && LLClipboard::instance().isTextAvailable(true);
 }
@@ -1405,9 +1405,9 @@ void LLLineEditor::updatePrimary()
     }
 }
 
-BOOL LLLineEditor::handleSpecialKey(KEY key, MASK mask)
+bool LLLineEditor::handleSpecialKey(KEY key, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     switch( key )
     {
@@ -1417,7 +1417,7 @@ BOOL LLLineEditor::handleSpecialKey(KEY key, MASK mask)
             gKeyboard->toggleInsertMode();
         }
 
-        handled = TRUE;
+        handled = true;
         break;
 
     case KEY_BACKSPACE:
@@ -1438,7 +1438,7 @@ BOOL LLLineEditor::handleSpecialKey(KEY key, MASK mask)
                 LLUI::getInstance()->reportBadKeystroke();
             }
         }
-        handled = TRUE;
+        handled = true;
         break;
 
     case KEY_PAGE_UP:
@@ -1446,7 +1446,7 @@ BOOL LLLineEditor::handleSpecialKey(KEY key, MASK mask)
         if (!mIgnoreArrowKeys)
         {
             setCursor(0);
-            handled = TRUE;
+            handled = true;
         }
         break;
 
@@ -1459,7 +1459,7 @@ BOOL LLLineEditor::handleSpecialKey(KEY key, MASK mask)
             {
                 setCursor(len);
             }
-            handled = TRUE;
+            handled = true;
         }
         break;
 
@@ -1486,7 +1486,7 @@ BOOL LLLineEditor::handleSpecialKey(KEY key, MASK mask)
             {
                 LLUI::getInstance()->reportBadKeystroke();
             }
-            handled = TRUE;
+            handled = true;
         }
         break;
 
@@ -1513,32 +1513,32 @@ BOOL LLLineEditor::handleSpecialKey(KEY key, MASK mask)
             {
                 LLUI::getInstance()->reportBadKeystroke();
             }
-            handled = TRUE;
+            handled = true;
         }
         break;
 
     // handle ctrl-uparrow if we have a history enabled line editor.
     case KEY_UP:
-        if( mHaveHistory && ((mIgnoreArrowKeys == false) || ( MASK_CONTROL == mask )) )
+        if (mHaveHistory && (!mIgnoreArrowKeys || (MASK_CONTROL == mask)))
         {
-            if( mCurrentHistoryLine > mLineHistory.begin() )
+            if (mCurrentHistoryLine > mLineHistory.begin())
             {
-                mText.assign( *(--mCurrentHistoryLine) );
+                mText.assign(*(--mCurrentHistoryLine));
                 setCursorToEnd();
             }
             else
             {
                 LLUI::getInstance()->reportBadKeystroke();
             }
-            handled = TRUE;
+            handled = true;
         }
         break;
 
     // handle [ctrl]-downarrow if we have a history enabled line editor
     case KEY_DOWN:
-        if( mHaveHistory  && ((mIgnoreArrowKeys == false) || ( MASK_CONTROL == mask )) )
+        if (mHaveHistory  && (!mIgnoreArrowKeys || (MASK_CONTROL == mask)))
         {
-            if( !mLineHistory.empty() && mCurrentHistoryLine < mLineHistory.end() - 1 )
+            if (!mLineHistory.empty() && mCurrentHistoryLine < mLineHistory.end() - 1)
             {
                 mText.assign( *(++mCurrentHistoryLine) );
                 setCursorToEnd();
@@ -1547,7 +1547,7 @@ BOOL LLLineEditor::handleSpecialKey(KEY key, MASK mask)
             {
                 LLUI::getInstance()->reportBadKeystroke();
             }
-            handled = TRUE;
+            handled = true;
         }
         break;
 
@@ -1576,10 +1576,10 @@ BOOL LLLineEditor::handleSpecialKey(KEY key, MASK mask)
 }
 
 
-BOOL LLLineEditor::handleKeyHere(KEY key, MASK mask )
+bool LLLineEditor::handleKeyHere(KEY key, MASK mask )
 {
-    BOOL    handled = FALSE;
-    BOOL    selection_modified = FALSE;
+    bool    handled = false;
+    bool    selection_modified = false;
 
     if ( gFocusMgr.getKeyboardFocus() == this )
     {
@@ -1653,18 +1653,18 @@ BOOL LLLineEditor::handleKeyHere(KEY key, MASK mask )
 }
 
 
-BOOL LLLineEditor::handleUnicodeCharHere(llwchar uni_char)
+bool LLLineEditor::handleUnicodeCharHere(llwchar uni_char)
 {
     if ((uni_char < 0x20) || (uni_char == 0x7F)) // Control character or DEL
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     if ( (gFocusMgr.getKeyboardFocus() == this) && getVisible() && !mReadOnly)
     {
-        handled = TRUE;
+        handled = true;
 
         LLLineEditorRollback rollback( this );
 
@@ -1704,7 +1704,7 @@ BOOL LLLineEditor::handleUnicodeCharHere(llwchar uni_char)
     return handled;
 }
 
-BOOL LLLineEditor::handleUnicodeStringHere(char *uni_str, bool editing)
+bool LLLineEditor::handleUnicodeStringHere(char *uni_str, bool editing)
 {
 	auto handled = FALSE;
 
@@ -1735,7 +1735,7 @@ BOOL LLLineEditor::handleUnicodeStringHere(char *uni_str, bool editing)
 	return handled;
 }
 
-BOOL LLLineEditor::canDoDelete() const
+bool LLLineEditor::canDoDelete() const
 {
     return ( !mReadOnly && (!mPassDelete || (hasSelection() || (getCursor() < mText.length()))) );
 }
@@ -1787,7 +1787,7 @@ void LLLineEditor::drawBackground()
     F32 alpha = getCurrentTransparency();
     if (mUseBgColor)
     {
-        gl_rect_2d(getLocalRect(), mBgColor % alpha, TRUE);
+        gl_rect_2d(getLocalRect(), mBgColor % alpha, true);
     }
     else
     {
@@ -2009,7 +2009,7 @@ void LLLineEditor::draw()
             &rendered_pixels_right);
     }
 #if 1 // for when we're ready for image art.
-    mBorder->setVisible(FALSE); // no more programmatic art.
+    mBorder->setVisible(false); // no more programmatic art.
 #endif
 
     if ( (getSpellCheck()) && (mText.length() > 2) )
@@ -2110,7 +2110,7 @@ void LLLineEditor::draw()
     // If we're editing...
     if( hasFocus())
     {
-        //mBorder->setVisible(TRUE); // ok, programmer art just this once.
+        //mBorder->setVisible(true); // ok, programmer art just this once.
         // (Flash the cursor every half second)
         if (!mReadOnly && gFocusMgr.getAppHasFocus())
         {
@@ -2166,16 +2166,16 @@ void LLLineEditor::draw()
                             LLFontGL::NO_SHADOW,
                             S32_MAX,
                             mTextRightEdge - ll_round(rendered_pixels_right),
-                            &rendered_pixels_right, FALSE);
+                            &rendered_pixels_right, false);
         }
 
 
         // Draw children (border)
-        //mBorder->setVisible(TRUE);
-        mBorder->setKeyboardFocusHighlight( TRUE );
+        //mBorder->setVisible(true);
+        mBorder->setKeyboardFocusHighlight( true );
         LLView::draw();
-        mBorder->setKeyboardFocusHighlight( FALSE );
-        //mBorder->setVisible(FALSE);
+        mBorder->setKeyboardFocusHighlight( false );
+        //mBorder->setVisible(false);
     }
     else // does not have keyboard input
     {
@@ -2248,19 +2248,19 @@ void LLLineEditor::onTabInto()
 }
 
 //virtual
-BOOL LLLineEditor::acceptsTextInput() const
+bool LLLineEditor::acceptsTextInput() const
 {
-    return TRUE;
+    return true;
 }
 
 // Start or stop the editor from accepting text-editing keystrokes
-void LLLineEditor::setFocus( BOOL new_state )
+void LLLineEditor::setFocus( bool new_state )
 {
-    BOOL old_state = hasFocus();
+    bool old_state = hasFocus();
 
     if (!new_state)
     {
-        getWindow()->allowLanguageTextInput(this, FALSE);
+        getWindow()->allowLanguageTextInput(this, false);
     }
 
 
@@ -2271,7 +2271,7 @@ void LLLineEditor::setFocus( BOOL new_state )
         // We don't want handleMouseUp() to "finish" the selection (and thereby
         // set mSelectionEnd to where the mouse is), so we finish the selection
         // here.
-        mIsSelecting = FALSE;
+        mIsSelecting = false;
     }
 
     if( new_state )
@@ -2339,20 +2339,20 @@ bool LLLineEditor::prevalidateInput(const LLWString& wstr)
 }
 
 // static
-BOOL LLLineEditor::postvalidateFloat(const std::string &str)
+bool LLLineEditor::postvalidateFloat(const std::string &str)
 {
     LLLocale locale(LLLocale::USER_LOCALE);
 
-    BOOL success = TRUE;
-    BOOL has_decimal = FALSE;
-    BOOL has_digit = FALSE;
+    bool success = true;
+    bool has_decimal = false;
+    bool has_digit = false;
 
     LLWString trimmed = utf8str_to_wstring(str);
     LLWStringUtil::trim(trimmed);
-    S32 len = trimmed.length();
+    auto len = trimmed.length();
     if( 0 < len )
     {
-        S32 i = 0;
+        size_t i = 0;
 
         // First character can be a negative sign
         if( '-' == trimmed[0] )
@@ -2370,22 +2370,22 @@ BOOL LLLineEditor::postvalidateFloat(const std::string &str)
                 if( has_decimal )
                 {
                     // can't have two
-                    success = FALSE;
+                    success = false;
                     break;
                 }
                 else
                 {
-                    has_decimal = TRUE;
+                    has_decimal = true;
                 }
             }
             else
             if( LLStringOps::isDigit( trimmed[i] ) )
             {
-                has_digit = TRUE;
+                has_digit = true;
             }
             else
             {
-                success = FALSE;
+                success = false;
                 break;
             }
         }
@@ -2397,7 +2397,7 @@ BOOL LLLineEditor::postvalidateFloat(const std::string &str)
     return success;
 }
 
-BOOL LLLineEditor::evaluateFloat()
+bool LLLineEditor::evaluateFloat()
 {
     bool success;
     F32 result = 0.f;
@@ -2409,7 +2409,7 @@ BOOL LLLineEditor::evaluateFloat()
     if (!success)
     {
         // Move the cursor to near the error on failure
-        setCursor(LLCalc::getInstance()->getLastErrorPos());
+        setCursor(static_cast<S32>(LLCalc::getInstance()->getLastErrorPos()));
         // *TODO: Translated error message indicating the type of error? Select error text?
     }
     else
@@ -2429,7 +2429,7 @@ void LLLineEditor::onMouseCaptureLost()
 }
 
 
-void LLLineEditor::setSelectAllonFocusReceived(BOOL b)
+void LLLineEditor::setSelectAllonFocusReceived(bool b)
 {
     mSelectAllonFocusReceived = b;
 }
@@ -2450,16 +2450,16 @@ void LLLineEditor::setKeystrokeCallback(callback_t callback, void* user_data)
 }
 
 
-BOOL LLLineEditor::setTextArg( const std::string& key, const LLStringExplicit& text )
+bool LLLineEditor::setTextArg( const std::string& key, const LLStringExplicit& text )
 {
     mText.setArg(key, text);
-    return TRUE;
+    return true;
 }
 
-BOOL LLLineEditor::setLabelArg( const std::string& key, const LLStringExplicit& text )
+bool LLLineEditor::setLabelArg( const std::string& key, const LLStringExplicit& text )
 {
     mLabel.setArg(key, text);
-    return TRUE;
+    return true;
 }
 
 
@@ -2479,15 +2479,15 @@ void LLLineEditor::updateAllowingLanguageInput()
     }
     if (hasFocus() && !mReadOnly && !mDrawAsterixes && !mPrevalidator)
     {
-        window->allowLanguageTextInput(this, TRUE);
+        window->allowLanguageTextInput(this, true);
     }
     else
     {
-        window->allowLanguageTextInput(this, FALSE);
+        window->allowLanguageTextInput(this, false);
     }
 }
 
-BOOL LLLineEditor::hasPreeditString() const
+bool LLLineEditor::hasPreeditString() const
 {
     return (mPreeditPositions.size() > 1);
 }
@@ -2550,7 +2550,7 @@ void LLLineEditor::updatePreedit(const LLWString &preedit_string,
     if (LL_KIM_OVERWRITE == gKeyboard->getInsertMode())
     {
         mPreeditOverwrittenWString.assign( LLWString( mText, insert_preedit_at, mPreeditWString.length() ) );
-        mText.erase(insert_preedit_at, mPreeditWString.length());
+        mText.erase(insert_preedit_at, static_cast<S32>(mPreeditWString.length()));
     }
     else
     {
@@ -2570,7 +2570,7 @@ void LLLineEditor::updatePreedit(const LLWString &preedit_string,
     mSpellCheckTimer.setTimerExpirySec(SPELLCHECK_DELAY);
 }
 
-BOOL LLLineEditor::getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect *bounds, LLRect *control) const
+bool LLLineEditor::getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect *bounds, LLRect *control) const
 {
     if (control)
     {
@@ -2592,13 +2592,13 @@ BOOL LLLineEditor::getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect
     if (preedit_right_column < mScrollHPos)
     {
         // This should not occure...
-        return FALSE;
+        return false;
     }
 
     const S32 query = (query_offset >= 0 ? preedit_left_column + query_offset : getCursor());
     if (query < mScrollHPos || query < preedit_left_column || query > preedit_right_column)
     {
-        return FALSE;
+        return false;
     }
 
     if (coord)
@@ -2625,7 +2625,7 @@ BOOL LLLineEditor::getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect
         LLUI::getInstance()->screenRectToGL(preedit_rect_screen, bounds);
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLLineEditor::getPreeditRange(S32 *position, S32 *length) const
@@ -2671,7 +2671,7 @@ void LLLineEditor::markAsPreedit(S32 position, S32 length)
         mPreeditPositions[0] = position;
         mPreeditPositions[1] = position + length;
         mPreeditStandouts.resize(1);
-        mPreeditStandouts[0] = FALSE;
+        mPreeditStandouts[0] = false;
     }
     else
     {
@@ -2693,7 +2693,7 @@ S32 LLLineEditor::getPreeditFontSize() const
     return ll_round(mGLFont->getLineHeight() * LLUI::getScaleFactor().mV[VY]);
 }
 
-void LLLineEditor::setReplaceNewlinesWithSpaces(BOOL replace)
+void LLLineEditor::setReplaceNewlinesWithSpaces(bool replace)
 {
     mReplaceNewlinesWithSpaces = replace;
 }
@@ -2749,7 +2749,7 @@ void LLLineEditor::showContextMenu(S32 x, S32 y)
 
             // If the cursor is on a misspelled word, retrieve suggestions for it
             std::string misspelled_word = getMisspelledWord(mCursorPos);
-            if ((is_misspelled = !misspelled_word.empty()) == true)
+            if ((is_misspelled = !misspelled_word.empty()))
             {
                 LLSpellChecker::instance().getSuggestions(misspelled_word, mSuggestionList);
             }
diff --git a/indra/llui/lllineeditor.h b/indra/llui/lllineeditor.h
index 10f486643a..2d9c3ac58a 100644
--- a/indra/llui/lllineeditor.h
+++ b/indra/llui/lllineeditor.h
@@ -125,38 +125,38 @@ public:
     virtual ~LLLineEditor();
 
     // mousehandler overrides
-    /*virtual*/ BOOL    handleMouseDown(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL    handleDoubleClick(S32 x,S32 y,MASK mask) override;
-    /*virtual*/ BOOL    handleMiddleMouseDown(S32 x,S32 y,MASK mask) override;
-    /*virtual*/ BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL    handleKeyHere(KEY key, MASK mask) override;
-    /*virtual*/ BOOL    handleUnicodeCharHere(llwchar uni_char) override;
-    /*virtual*/ BOOL    handleUnicodeStringHere(char *uni_str, bool editing) override;
+    /*virtual*/ bool    handleMouseDown(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleDoubleClick(S32 x,S32 y,MASK mask) override;
+    /*virtual*/ bool    handleMiddleMouseDown(S32 x,S32 y,MASK mask) override;
+    /*virtual*/ bool    handleRightMouseDown(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleKeyHere(KEY key, MASK mask) override;
+    /*virtual*/ bool    handleUnicodeCharHere(llwchar uni_char) override;
+    /*virtual*/ bool    handleUnicodeStringHere(char *uni_str, bool editing) override;
     /*virtual*/ void    onMouseCaptureLost() override;
 
     // LLEditMenuHandler overrides
     /*virtual*/ void    cut() override;
-    /*virtual*/ BOOL    canCut() const override;
+    /*virtual*/ bool    canCut() const override;
     /*virtual*/ void    copy() override;
-    /*virtual*/ BOOL    canCopy() const override;
+    /*virtual*/ bool    canCopy() const override;
     /*virtual*/ void    paste() override;
-    /*virtual*/ BOOL    canPaste() const override;
+    /*virtual*/ bool    canPaste() const override;
 
     virtual void    updatePrimary();
     virtual void    copyPrimary();
     virtual void    pastePrimary();
-    virtual BOOL    canPastePrimary() const;
+    virtual bool    canPastePrimary() const;
 
     /*virtual*/ void    doDelete() override;
-    /*virtual*/ BOOL    canDoDelete() const override;
+    /*virtual*/ bool    canDoDelete() const override;
 
     /*virtual*/ void    selectAll() override;
-    /*virtual*/ BOOL    canSelectAll() const override;
+    /*virtual*/ bool    canSelectAll() const override;
 
     /*virtual*/ void    deselect() override;
-    /*virtual*/ BOOL    canDeselect() const override;
+    /*virtual*/ bool    canDeselect() const override;
 
     // LLSpellCheckMenuHandler overrides
     /*virtual*/ bool    getSpellCheck() const override;
@@ -178,26 +178,26 @@ public:
 
     // view overrides
     /*virtual*/ void    draw() override;
-    /*virtual*/ void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE) override;
+    /*virtual*/ void    reshape(S32 width, S32 height, bool called_from_parent = true) override;
     /*virtual*/ void    onFocusReceived() override;
     /*virtual*/ void    onFocusLost() override;
-    /*virtual*/ void    setEnabled(BOOL enabled) override;
+    /*virtual*/ void    setEnabled(bool enabled) override;
 
     // UI control overrides
     /*virtual*/ void    clear() override;
     /*virtual*/ void    onTabInto() override;
-    /*virtual*/ void    setFocus(BOOL b) override;
+    /*virtual*/ void    setFocus(bool b) override;
     /*virtual*/ void    setRect(const LLRect& rect) override;
-    /*virtual*/ BOOL    acceptsTextInput() const override;
+    /*virtual*/ bool    acceptsTextInput() const override;
     /*virtual*/ void    onCommit() override;
-    /*virtual*/ BOOL    isDirty() const override;   // Returns TRUE if user changed value at all
+    /*virtual*/ bool    isDirty() const override;   // Returns true if user changed value at all
     /*virtual*/ void    resetDirty() override;      // Clear dirty state
 
     // assumes UTF8 text
     /*virtual*/ void    setValue(const LLSD& value) override;
     /*virtual*/ LLSD    getValue() const override;
-    /*virtual*/ BOOL    setTextArg(const std::string& key, const LLStringExplicit& text) override;
-    /*virtual*/ BOOL    setLabelArg(const std::string& key, const LLStringExplicit& text) override;
+    /*virtual*/ bool    setTextArg(const std::string& key, const LLStringExplicit& text) override;
+    /*virtual*/ bool    setLabelArg(const std::string& key, const LLStringExplicit& text) override;
 
     void            setLabel(const LLStringExplicit &new_label) { mLabel = new_label; }
     const std::string&  getLabel()  { return mLabel.getString(); }
@@ -221,9 +221,9 @@ public:
     void            setSelection(S32 start, S32 end);
     /*virtual*/ void    getSelectionRange(S32 *position, S32 *length) const override;
 
-    void            setCommitOnFocusLost( BOOL b )  { mCommitOnFocusLost = b; }
-    void            setRevertOnEsc( BOOL b )        { mRevertOnEsc = b; }
-    void            setKeystrokeOnEsc(BOOL b)       { mKeystrokeOnEsc = b; }
+    void            setCommitOnFocusLost( bool b )  { mCommitOnFocusLost = b; }
+    void            setRevertOnEsc( bool b )        { mRevertOnEsc = b; }
+    void            setKeystrokeOnEsc(bool b)       { mKeystrokeOnEsc = b; }
 
     void setCursorColor(const LLColor4& c)          { mCursorColor = c; }
     const LLColor4& getCursorColor() const          { return mCursorColor.get(); }
@@ -239,24 +239,24 @@ public:
     const LLFontGL* getFont() const override { return mGLFont; }
     void setFont(const LLFontGL* font);
 
-    void            setIgnoreArrowKeys(BOOL b)      { mIgnoreArrowKeys = b; }
-    void            setIgnoreTab(BOOL b)            { mIgnoreTab = b; }
-    void            setPassDelete(BOOL b)           { mPassDelete = b; }
-    void            setAllowEmoji(BOOL b)           { mAllowEmoji = b; }
-    void            setDrawAsterixes(BOOL b);
+    void            setIgnoreArrowKeys(bool b)      { mIgnoreArrowKeys = b; }
+    void            setIgnoreTab(bool b)            { mIgnoreTab = b; }
+    void            setPassDelete(bool b)           { mPassDelete = b; }
+    void            setAllowEmoji(bool b)           { mAllowEmoji = b; }
+    void            setDrawAsterixes(bool b);
 
     // get the cursor position of the beginning/end of the prev/next word in the text
     S32             prevWordPos(S32 cursorPos) const;
     S32             nextWordPos(S32 cursorPos) const;
 
-    BOOL            hasSelection() const { return (mSelectionStart != mSelectionEnd); }
+    bool            hasSelection() const { return (mSelectionStart != mSelectionEnd); }
     void            startSelection();
     void            endSelection();
     void            extendSelection(S32 new_cursor_pos);
     void            deleteSelection();
 
-    void            setSelectAllonFocusReceived(BOOL b);
-    void            setSelectAllonCommit(BOOL b) { mSelectAllonCommit = b; }
+    void            setSelectAllonFocusReceived(bool b);
+    void            setSelectAllonCommit(bool b) { mSelectAllonCommit = b; }
 
     void            onKeystroke();
     typedef boost::function<void (LLLineEditor* caller, void* user_data)> callback_t;
@@ -275,16 +275,16 @@ public:
     // Also callback that this method sets differs from setPrevalidate in a way that it validates just inputed
     // symbols, before existing text is modified, but setPrevalidate validates line after it was modified.
     void            setPrevalidateInput(LLTextValidate::Validator validator);
-    static BOOL     postvalidateFloat(const std::string &str);
+    static bool     postvalidateFloat(const std::string &str);
 
     bool            prevalidateInput(const LLWString& wstr);
-    BOOL            evaluateFloat();
+    bool            evaluateFloat();
 
     // line history support:
-    void            setEnableLineHistory( BOOL enabled ) { mHaveHistory = enabled; } // switches line history on or off
+    void            setEnableLineHistory( bool enabled ) { mHaveHistory = enabled; } // switches line history on or off
     void            updateHistory(); // stores current line in history
 
-    void            setReplaceNewlinesWithSpaces(BOOL replace);
+    void            setReplaceNewlinesWithSpaces(bool replace);
 
     void            resetContextMenu() { setContextMenu(NULL); };
 
@@ -305,9 +305,9 @@ public:
     void            setCursorAtLocalPos(S32 local_mouse_x);
     S32             findPixelNearestPos(S32 cursor_offset = 0) const;
     S32             calcCursorPos(S32 mouse_x);
-    BOOL            handleSpecialKey(KEY key, MASK mask);
-    BOOL            handleSelectionKey(KEY key, MASK mask);
-    BOOL            handleControlKey(KEY key, MASK mask);
+    bool            handleSpecialKey(KEY key, MASK mask);
+    bool            handleSelectionKey(KEY key, MASK mask);
+    bool            handleControlKey(KEY key, MASK mask);
     S32             handleCommitKey(KEY key, MASK mask);
     void            updateTextPadding();
 
@@ -318,14 +318,14 @@ public:
     // private data members
     //
     void            updateAllowingLanguageInput();
-    BOOL            hasPreeditString() const;
+    bool            hasPreeditString() const;
     // Implementation (overrides) of LLPreeditor
     /*virtual*/ void    resetPreedit() override;
     /*virtual*/ void    updatePreedit(const LLWString &preedit_string,
                         const segment_lengths_t &preedit_segment_lengths, const standouts_t &preedit_standouts, S32 caret_position) override;
     /*virtual*/ void    markAsPreedit(S32 position, S32 length) override;
     /*virtual*/ void    getPreeditRange(S32 *position, S32 *length) const override;
-    /*virtual*/ BOOL    getPreeditLocation(S32 query_position, LLCoordGL *coord, LLRect *bounds, LLRect *control) const override;
+    /*virtual*/ bool    getPreeditLocation(S32 query_position, LLCoordGL *coord, LLRect *bounds, LLRect *control) const override;
     /*virtual*/ S32     getPreeditFontSize() const override;
     /*virtual*/ LLWString getPreeditString() const override { return getWText(); }
 
@@ -339,7 +339,7 @@ protected:
     LLUIString      mLabel;                 // text label that is visible when no user text provided
 
     // line history support:
-    BOOL        mHaveHistory;               // flag for enabled line history
+    bool        mHaveHistory;               // flag for enabled line history
     typedef std::vector<std::string>    line_history_t;
     line_history_t  mLineHistory;           // line history storage
     line_history_t::iterator    mCurrentHistoryLine;    // currently browsed history line
@@ -356,13 +356,13 @@ protected:
     S32         mTextLeftEdge;              // Pixels, cached left edge of text based on left padding and width
     S32         mTextRightEdge;             // Pixels, cached right edge of text based on right padding and width
 
-    BOOL        mCommitOnFocusLost;
-    BOOL        mRevertOnEsc;
-    BOOL        mKeystrokeOnEsc;
+    bool        mCommitOnFocusLost;
+    bool        mRevertOnEsc;
+    bool        mKeystrokeOnEsc;
 
     keystroke_callback_t mKeystrokeCallback;
 
-    BOOL        mIsSelecting;               // Selection for clipboard operations
+    bool        mIsSelecting;               // Selection for clipboard operations
     S32         mSelectionStart;
     S32         mSelectionEnd;
     S32         mLastSelectionX;
@@ -393,18 +393,18 @@ protected:
 
     S32         mBorderThickness;
 
-    BOOL        mIgnoreArrowKeys;
-    BOOL        mIgnoreTab;
-    BOOL        mDrawAsterixes;
+    bool        mIgnoreArrowKeys;
+    bool        mIgnoreTab;
+    bool        mDrawAsterixes;
 
-    BOOL        mSelectAllonFocusReceived;
-    BOOL        mSelectAllonCommit;
-    BOOL        mPassDelete;
+    bool        mSelectAllonFocusReceived;
+    bool        mSelectAllonCommit;
+    bool        mPassDelete;
 
-    BOOL        mReadOnly;
+    bool        mReadOnly;
 
-    BOOL        mShowImageFocused;
-    BOOL        mShowLabelFocused;
+    bool        mShowImageFocused;
+    bool        mShowLabelFocused;
 
     bool        mAllowEmoji;
     bool        mUseBgColor;
@@ -424,7 +424,7 @@ private:
     LLPointer<LLUIImage> mBgImageDisabled;
     LLPointer<LLUIImage> mBgImageFocused;
 
-    BOOL        mReplaceNewlinesWithSpaces; // if false, will replace pasted newlines with paragraph symbol.
+    bool        mReplaceNewlinesWithSpaces; // if false, will replace pasted newlines with paragraph symbol.
 
     // private helper class
     class LLLineEditorRollback
@@ -458,7 +458,7 @@ private:
         std::string mText;
         S32     mCursorPos;
         S32     mScrollHPos;
-        BOOL    mIsSelecting;
+        bool    mIsSelecting;
         S32     mSelectionStart;
         S32     mSelectionEnd;
     }; // end class LLLineEditorRollback
@@ -468,7 +468,7 @@ private:
 // Build time optimization, generate once in .cpp file
 #ifndef LLLINEEDITOR_CPP
 extern template class LLLineEditor* LLView::getChild<class LLLineEditor>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 #endif
 
 #endif  // LL_LINEEDITOR_
diff --git a/indra/llui/lllocalcliprect.cpp b/indra/llui/lllocalcliprect.cpp
index f8ccb807e6..0204946125 100644
--- a/indra/llui/lllocalcliprect.cpp
+++ b/indra/llui/lllocalcliprect.cpp
@@ -32,7 +32,7 @@
 /*static*/ std::stack<LLRect> LLScreenClipRect::sClipRectStack;
 
 
-LLScreenClipRect::LLScreenClipRect(const LLRect& rect, BOOL enabled)
+LLScreenClipRect::LLScreenClipRect(const LLRect& rect, bool enabled)
 :   mScissorState(GL_SCISSOR_TEST),
     mEnabled(enabled)
 {
@@ -99,7 +99,7 @@ void LLScreenClipRect::updateScissorRegion()
 //---------------------------------------------------------------------------
 // LLLocalClipRect
 //---------------------------------------------------------------------------
-LLLocalClipRect::LLLocalClipRect(const LLRect& rect, BOOL enabled /* = TRUE */)
+LLLocalClipRect::LLLocalClipRect(const LLRect& rect, bool enabled /* = true */)
 :   LLScreenClipRect(LLRect(rect.mLeft + LLFontGL::sCurOrigin.mX,
                     rect.mTop + LLFontGL::sCurOrigin.mY,
                     rect.mRight + LLFontGL::sCurOrigin.mX,
diff --git a/indra/llui/lllocalcliprect.h b/indra/llui/lllocalcliprect.h
index cb74de7c22..2a858e6163 100644
--- a/indra/llui/lllocalcliprect.h
+++ b/indra/llui/lllocalcliprect.h
@@ -38,7 +38,7 @@
 class LLScreenClipRect
 {
 public:
-    LLScreenClipRect(const LLRect& rect, BOOL enabled = TRUE);
+    LLScreenClipRect(const LLRect& rect, bool enabled = true);
     virtual ~LLScreenClipRect();
 
 private:
@@ -48,7 +48,7 @@ private:
 
 private:
     LLGLState       mScissorState;
-    BOOL            mEnabled;
+    bool            mEnabled;
 
     static std::stack<LLRect> sClipRectStack;
 };
@@ -56,7 +56,7 @@ private:
 class LLLocalClipRect : public LLScreenClipRect
 {
 public:
-    LLLocalClipRect(const LLRect& rect, BOOL enabled = TRUE);
+    LLLocalClipRect(const LLRect& rect, bool enabled = true);
     ~LLLocalClipRect();
 };
 
diff --git a/indra/llui/llmenubutton.cpp b/indra/llui/llmenubutton.cpp
index bfc4c089f3..2f91dcb046 100644
--- a/indra/llui/llmenubutton.cpp
+++ b/indra/llui/llmenubutton.cpp
@@ -78,7 +78,7 @@ void LLMenuButton::hideMenu()
     LLToggleableMenu* menu = getMenu();
     if (menu)
     {
-        menu->setVisible(FALSE);
+        menu->setVisible(false);
     }
 }
 
@@ -118,9 +118,9 @@ void LLMenuButton::setMenu(LLToggleableMenu* menu, EMenuPosition position /*MP_T
     menu->setVisibilityChangeCallback(boost::bind(&LLMenuButton::onMenuVisibilityChange, this, _2));
 }
 
-BOOL LLMenuButton::handleKeyHere(KEY key, MASK mask )
+bool LLMenuButton::handleKeyHere(KEY key, MASK mask )
 {
-    if (!getMenu()) return FALSE;
+    if (!getMenu()) return false;
 
     if( KEY_RETURN == key && mask == MASK_NONE && !gKeyboard->getKeyRepeated(key))
     {
@@ -129,26 +129,26 @@ BOOL LLMenuButton::handleKeyHere(KEY key, MASK mask )
         LLUICtrl::handleMouseDown(-1, -1, MASK_NONE);
 
         toggleMenu();
-        return TRUE;
+        return true;
     }
 
     LLToggleableMenu* menu = getMenu();
     if (menu && menu->getVisible() && key == KEY_ESCAPE && mask == MASK_NONE)
     {
-        menu->setVisible(FALSE);
-        return TRUE;
+        menu->setVisible(false);
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLMenuButton::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLMenuButton::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     LLButton::handleMouseDown(x, y, mask);
 
     toggleMenu();
 
-    return TRUE;
+    return true;
 }
 
 void LLMenuButton::toggleMenu()
diff --git a/indra/llui/llmenubutton.h b/indra/llui/llmenubutton.h
index 1039560827..a77ae7dae7 100644
--- a/indra/llui/llmenubutton.h
+++ b/indra/llui/llmenubutton.h
@@ -65,8 +65,8 @@ public:
 
     boost::signals2::connection setMouseDownCallback( const mouse_signal_t::slot_type& cb );
 
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleKeyHere(KEY key, MASK mask );
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleKeyHere(KEY key, MASK mask );
 
     void hideMenu();
 
diff --git a/indra/llui/llmenugl.cpp b/indra/llui/llmenugl.cpp
index 8fcb558aae..dffaf69a9f 100644
--- a/indra/llui/llmenugl.cpp
+++ b/indra/llui/llmenugl.cpp
@@ -100,7 +100,7 @@ const std::string LLMenuGL::ARROW_DOWN("vvvvvvv");
 
 const F32 MAX_MOUSE_SLOPE_SUB_MENU = 0.9f;
 
-BOOL LLMenuGL::sKeyboardMode = FALSE;
+bool LLMenuGL::sKeyboardMode = false;
 
 LLHandle<LLView> LLMenuHolderGL::sItemLastSelectedHandle;
 LLFrameTimer LLMenuHolderGL::sItemActivationTimer;
@@ -150,10 +150,10 @@ LLMenuItemGL::LLMenuItemGL(const LLMenuItemGL::Params& p)
 :   LLUICtrl(p),
     mJumpKey(p.jump_key),
     mAllowKeyRepeat(p.allow_key_repeat),
-    mHighlight( FALSE ),
-    mGotHover( FALSE ),
-    mBriefItem( FALSE ),
-    mDrawTextDisabled( FALSE ),
+    mHighlight( false ),
+    mGotHover( false ),
+    mBriefItem( false ),
+    mDrawTextDisabled( false ),
     mFont(p.font),
     mAcceleratorKey(KEY_NONE),
     mAcceleratorMask(MASK_NONE),
@@ -165,7 +165,7 @@ LLMenuItemGL::LLMenuItemGL(const LLMenuItemGL::Params& p)
 {
 #ifdef LL_DARWIN
     // See if this Mac accelerator should really use the ctrl key and not get mapped to cmd
-    BOOL useMacCtrl = p.use_mac_ctrl;
+    bool useMacCtrl = p.use_mac_ctrl;
 #endif // LL_DARWIN
 
     std::string shortcut = p.shortcut;
@@ -187,7 +187,7 @@ LLMenuItemGL::LLMenuItemGL(const LLMenuItemGL::Params& p)
     {
         mAcceleratorMask |= MASK_SHIFT;
     }
-    S32 pipe_pos = shortcut.rfind("|");
+    auto pipe_pos = shortcut.rfind("|");
     std::string key_str = shortcut.substr(pipe_pos+1);
 
     LLKeyboard::keyFromString(key_str, &mAcceleratorKey);
@@ -218,49 +218,49 @@ bool LLMenuItemGL::hasAccelerator(const KEY &key, const MASK &mask) const
 }
 
 //virtual
-BOOL LLMenuItemGL::handleAcceleratorKey(KEY key, MASK mask)
+bool LLMenuItemGL::handleAcceleratorKey(KEY key, MASK mask)
 {
     if( getEnabled() && (!gKeyboard->getKeyRepeated(key) || mAllowKeyRepeat) && (key == mAcceleratorKey) && (mask == (mAcceleratorMask & MASK_NORMALKEYS)) )
     {
         onCommit();
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLMenuItemGL::handleHover(S32 x, S32 y, MASK mask)
+bool LLMenuItemGL::handleHover(S32 x, S32 y, MASK mask)
 {
     getWindow()->setCursor(UI_CURSOR_ARROW);
-    return TRUE;
+    return true;
 }
 
 //virtual
-BOOL LLMenuItemGL::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLMenuItemGL::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     return LLUICtrl::handleRightMouseDown(x,y,mask);
 }
 
 void LLMenuItemGL::onMouseEnter(S32 x, S32 y, MASK mask)
 {
-    setHover(TRUE);
+    setHover(true);
     LLUICtrl::onMouseEnter(x,y,mask);
 }
 
 void LLMenuItemGL::onMouseLeave(S32 x, S32 y, MASK mask)
 {
-    setHover(FALSE);
+    setHover(false);
     LLUICtrl::onMouseLeave(x,y,mask);
 }
 
 //virtual
-BOOL LLMenuItemGL::handleRightMouseUp(S32 x, S32 y, MASK mask)
+bool LLMenuItemGL::handleRightMouseUp(S32 x, S32 y, MASK mask)
 {
     // If this event came from a right-click context menu spawn,
     // process as a left-click to allow menu items to be hit
     if (LLMenuHolderGL::sContextMenuSpawnPos.mX != S32_MAX
         || LLMenuHolderGL::sContextMenuSpawnPos.mY != S32_MAX)
     {
-        BOOL handled = handleMouseUp(x, y, mask);
+        bool handled = handleMouseUp(x, y, mask);
         return handled;
     }
     return LLUICtrl::handleRightMouseUp(x,y,mask);
@@ -268,7 +268,7 @@ BOOL LLMenuItemGL::handleRightMouseUp(S32 x, S32 y, MASK mask)
 
 // This function checks to see if the accelerator key is already in use;
 // if not, it will be added to the list
-BOOL LLMenuItemGL::addToAcceleratorList(std::list <LLMenuKeyboardBinding*> *listp)
+bool LLMenuItemGL::addToAcceleratorList(std::list <LLMenuKeyboardBinding*> *listp)
 {
     LLMenuKeyboardBinding *accelerator = NULL;
 
@@ -293,7 +293,7 @@ BOOL LLMenuItemGL::addToAcceleratorList(std::list <LLMenuKeyboardBinding*> *list
 
             //  LL_WARNS() << warning << LL_ENDL;
             //  LLAlertDialog::modalAlert(warning);
-                return FALSE;
+                return false;
             }
         }
         if (!accelerator)
@@ -308,7 +308,7 @@ BOOL LLMenuItemGL::addToAcceleratorList(std::list <LLMenuKeyboardBinding*> *list
             listp->push_back(accelerator);//addData(accelerator);
         }
     }
-    return TRUE;
+    return true;
 }
 
 // This function appends the character string representation of
@@ -332,13 +332,13 @@ U32 LLMenuItemGL::getNominalHeight( void ) const
 }
 
 //virtual
-void LLMenuItemGL::setBriefItem(BOOL brief)
+void LLMenuItemGL::setBriefItem(bool brief)
 {
     mBriefItem = brief;
 }
 
 //virtual
-BOOL LLMenuItemGL::isBriefItem() const
+bool LLMenuItemGL::isBriefItem() const
 {
     return mBriefItem;
 }
@@ -402,7 +402,7 @@ void LLMenuItemGL::onCommit( void )
 }
 
 // set the hover status (called by it's menu)
- void LLMenuItemGL::setHighlight( BOOL highlight )
+ void LLMenuItemGL::setHighlight( bool highlight )
 {
     if (highlight)
     {
@@ -418,7 +418,7 @@ void LLMenuItemGL::onCommit( void )
 }
 
 
-BOOL LLMenuItemGL::handleKeyHere( KEY key, MASK mask )
+bool LLMenuItemGL::handleKeyHere( KEY key, MASK mask )
 {
     if (getHighlight() &&
         getMenu()->isOpen())
@@ -426,52 +426,52 @@ BOOL LLMenuItemGL::handleKeyHere( KEY key, MASK mask )
         if (key == KEY_UP)
         {
             // switch to keyboard navigation mode
-            LLMenuGL::setKeyboardMode(TRUE);
+            LLMenuGL::setKeyboardMode(true);
 
             getMenu()->highlightPrevItem(this);
-            return TRUE;
+            return true;
         }
         else if (key == KEY_DOWN)
         {
             // switch to keyboard navigation mode
-            LLMenuGL::setKeyboardMode(TRUE);
+            LLMenuGL::setKeyboardMode(true);
 
             getMenu()->highlightNextItem(this);
-            return TRUE;
+            return true;
         }
         else if (key == KEY_RETURN && mask == MASK_NONE)
         {
             // switch to keyboard navigation mode
-            LLMenuGL::setKeyboardMode(TRUE);
+            LLMenuGL::setKeyboardMode(true);
 
             onCommit();
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLMenuItemGL::handleMouseUp( S32 x, S32 y, MASK mask)
+bool LLMenuItemGL::handleMouseUp( S32 x, S32 y, MASK mask)
 {
     // switch to mouse navigation mode
-    LLMenuGL::setKeyboardMode(FALSE);
+    LLMenuGL::setKeyboardMode(false);
 
     onCommit();
     make_ui_sound("UISndClickRelease");
     return LLView::handleMouseUp(x, y, mask);
 }
 
-BOOL LLMenuItemGL::handleMouseDown( S32 x, S32 y, MASK mask)
+bool LLMenuItemGL::handleMouseDown( S32 x, S32 y, MASK mask)
 {
     // switch to mouse navigation mode
-    LLMenuGL::setKeyboardMode(FALSE);
+    LLMenuGL::setKeyboardMode(false);
 
-    setHighlight(TRUE);
+    setHighlight(true);
     return LLView::handleMouseDown(x, y, mask);
 }
 
-BOOL LLMenuItemGL::handleScrollWheel( S32 x, S32 y, S32 clicks )
+bool LLMenuItemGL::handleScrollWheel( S32 x, S32 y, S32 clicks )
 {
     // If the menu is scrollable let it handle the wheel event.
     return !getMenu()->isScrollable();
@@ -521,19 +521,19 @@ void LLMenuItemGL::draw( void )
         if( !mDrawBoolLabel.empty() )
         {
             mFont->render( mDrawBoolLabel.getWString(), 0, (F32)LEFT_PAD_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f), color,
-                           LLFontGL::LEFT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, FALSE );
+                           LLFontGL::LEFT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, false );
         }
         mFont->render( mLabel.getWString(), 0, (F32)LEFT_PLAIN_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f), color,
-                       LLFontGL::LEFT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, FALSE );
+                       LLFontGL::LEFT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, false );
         if( !mDrawAccelLabel.empty() )
         {
             mFont->render( mDrawAccelLabel.getWString(), 0, (F32)getRect().mRight - (F32)RIGHT_PLAIN_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f), color,
-                           LLFontGL::RIGHT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, FALSE );
+                           LLFontGL::RIGHT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, false );
         }
         if( !mDrawBranchLabel.empty() )
         {
             mFont->render( mDrawBranchLabel.getWString(), 0, (F32)getRect().mRight - (F32)RIGHT_PAD_PIXELS, ((F32)MENU_ITEM_PADDING / 2.f), color,
-                           LLFontGL::RIGHT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, FALSE );
+                           LLFontGL::RIGHT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW, S32_MAX, S32_MAX, NULL, false );
         }
     }
 
@@ -545,20 +545,20 @@ void LLMenuItemGL::draw( void )
         std::string::size_type offset = upper_case_label.find(mJumpKey);
         if (offset != std::string::npos)
         {
-            S32 x_begin = LEFT_PLAIN_PIXELS + mFont->getWidth(mLabel, 0, offset);
-            S32 x_end = LEFT_PLAIN_PIXELS + mFont->getWidth(mLabel, 0, offset + 1);
+            S32 x_begin = LEFT_PLAIN_PIXELS + mFont->getWidth(mLabel, 0, static_cast<S32>(offset));
+            S32 x_end = LEFT_PLAIN_PIXELS + mFont->getWidth(mLabel, 0, static_cast<S32>(offset) + 1);
             gl_line_2d(x_begin, (MENU_ITEM_PADDING / 2) + 1, x_end, (MENU_ITEM_PADDING / 2) + 1);
         }
     }
 }
 
-BOOL LLMenuItemGL::setLabelArg( const std::string& key, const LLStringExplicit& text )
+bool LLMenuItemGL::setLabelArg( const std::string& key, const LLStringExplicit& text )
 {
     mLabel.setArg(key, text);
-    return TRUE;
+    return true;
 }
 
-void LLMenuItemGL::onVisibilityChange(BOOL new_visibility)
+void LLMenuItemGL::onVisibilityChange(bool new_visibility)
 {
     if (getMenu())
     {
@@ -609,49 +609,49 @@ void LLMenuItemSeparatorGL::buildDrawLabel( void )
     }
 }
 
-BOOL LLMenuItemSeparatorGL::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLMenuItemSeparatorGL::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     LLMenuGL* parent_menu = getMenu();
     if (y > getRect().getHeight() / 2)
     {
         // the menu items are in the child list in bottom up order
         LLView* prev_menu_item = parent_menu->findNextSibling(this);
-        return (prev_menu_item && prev_menu_item->getVisible() && prev_menu_item->getEnabled()) ? prev_menu_item->handleMouseDown(x, prev_menu_item->getRect().getHeight(), mask) : FALSE;
+        return (prev_menu_item && prev_menu_item->getVisible() && prev_menu_item->getEnabled()) ? prev_menu_item->handleMouseDown(x, prev_menu_item->getRect().getHeight(), mask) : false;
     }
     else
     {
         LLView* next_menu_item = parent_menu->findPrevSibling(this);
-        return (next_menu_item && next_menu_item->getVisible() && next_menu_item->getEnabled()) ? next_menu_item->handleMouseDown(x, 0, mask) : FALSE;
+        return (next_menu_item && next_menu_item->getVisible() && next_menu_item->getEnabled()) ? next_menu_item->handleMouseDown(x, 0, mask) : false;
     }
 }
 
-BOOL LLMenuItemSeparatorGL::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLMenuItemSeparatorGL::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     LLMenuGL* parent_menu = getMenu();
     if (y > getRect().getHeight() / 2)
     {
         LLView* prev_menu_item = parent_menu->findNextSibling(this);
-        return (prev_menu_item && prev_menu_item->getVisible() && prev_menu_item->getEnabled()) ? prev_menu_item->handleMouseUp(x, prev_menu_item->getRect().getHeight(), mask) : FALSE;
+        return (prev_menu_item && prev_menu_item->getVisible() && prev_menu_item->getEnabled()) ? prev_menu_item->handleMouseUp(x, prev_menu_item->getRect().getHeight(), mask) : false;
     }
     else
     {
         LLView* next_menu_item = parent_menu->findPrevSibling(this);
-        return (next_menu_item && next_menu_item->getVisible() && next_menu_item->getEnabled()) ? next_menu_item->handleMouseUp(x, 0, mask) : FALSE;
+        return (next_menu_item && next_menu_item->getVisible() && next_menu_item->getEnabled()) ? next_menu_item->handleMouseUp(x, 0, mask) : false;
     }
 }
 
-BOOL LLMenuItemSeparatorGL::handleHover(S32 x, S32 y, MASK mask)
+bool LLMenuItemSeparatorGL::handleHover(S32 x, S32 y, MASK mask)
 {
     LLMenuGL* parent_menu = getMenu();
     if (y > getRect().getHeight() / 2)
     {
-        parent_menu->highlightPrevItem(this, FALSE);
-        return FALSE;
+        parent_menu->highlightPrevItem(this, false);
+        return false;
     }
     else
     {
-        parent_menu->highlightNextItem(this, FALSE);
-        return FALSE;
+        parent_menu->highlightNextItem(this, false);
+        return false;
     }
 }
 
@@ -667,7 +667,7 @@ class LLMenuItemVerticalSeparatorGL
 public:
     LLMenuItemVerticalSeparatorGL( void );
 
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask) { return FALSE; }
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask) { return false; }
 };
 
 LLMenuItemVerticalSeparatorGL::LLMenuItemVerticalSeparatorGL( void )
@@ -739,12 +739,12 @@ void LLMenuItemTearOffGL::onCommit()
         {
             if (parent_floater)
             {
-                parent_floater->addDependentFloater(tear_off_menu, FALSE);
+                parent_floater->addDependentFloater(tear_off_menu, false);
             }
 
             // give focus to torn off menu because it will have
             // been taken away when parent menu closes
-            tear_off_menu->setFocus(TRUE);
+            tear_off_menu->setFocus(true);
         }
     }
     LLMenuItemGL::onCommit();
@@ -864,12 +864,12 @@ void LLMenuItemCallGL::buildDrawLabel( void )
     LLMenuItemGL::buildDrawLabel();
 }
 
-BOOL LLMenuItemCallGL::handleKeyHere( KEY key, MASK mask )
+bool LLMenuItemCallGL::handleKeyHere( KEY key, MASK mask )
 {
     return LLMenuItemGL::handleKeyHere(key, mask);
 }
 
-BOOL LLMenuItemCallGL::handleAcceleratorKey( KEY key, MASK mask )
+bool LLMenuItemCallGL::handleAcceleratorKey( KEY key, MASK mask )
 {
     if( (!gKeyboard->getKeyRepeated(key) || getAllowKeyRepeat()) && (key == mAcceleratorKey) && (mask == (mAcceleratorMask & MASK_NORMALKEYS)) )
     {
@@ -877,10 +877,10 @@ BOOL LLMenuItemCallGL::handleAcceleratorKey( KEY key, MASK mask )
         if (getEnabled())
         {
             onCommit();
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 // handleRightMouseUp moved into base class LLMenuItemGL so clicks are
@@ -972,7 +972,7 @@ LLMenuItemBranchGL::LLMenuItemBranchGL(const LLMenuItemBranchGL::Params& p)
     if (branch)
     {
         mBranchHandle = branch->getHandle();
-        branch->setVisible(FALSE);
+        branch->setVisible(false);
         branch->setParentMenuItem(this);
     }
 }
@@ -988,7 +988,7 @@ LLMenuItemBranchGL::~LLMenuItemBranchGL()
 
 
 // virtual
-LLView* LLMenuItemBranchGL::getChildView(const std::string& name, BOOL recurse) const
+LLView* LLMenuItemBranchGL::getChildView(const std::string& name, bool recurse) const
 {
     LLMenuGL* branch = getBranch();
     if (branch)
@@ -1005,7 +1005,7 @@ LLView* LLMenuItemBranchGL::getChildView(const std::string& name, BOOL recurse)
     return LLView::getChildView(name, recurse);
 }
 
-LLView* LLMenuItemBranchGL::findChildView(const std::string& name, BOOL recurse) const
+LLView* LLMenuItemBranchGL::findChildView(const std::string& name, bool recurse) const
 {
     LLMenuGL* branch = getBranch();
     if (branch)
@@ -1023,14 +1023,14 @@ LLView* LLMenuItemBranchGL::findChildView(const std::string& name, BOOL recurse)
 }
 
 // virtual
-BOOL LLMenuItemBranchGL::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLMenuItemBranchGL::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     // switch to mouse navigation mode
-    LLMenuGL::setKeyboardMode(FALSE);
+    LLMenuGL::setKeyboardMode(false);
 
     onCommit();
     make_ui_sound("UISndClickRelease");
-    return TRUE;
+    return true;
 }
 
 bool LLMenuItemBranchGL::hasAccelerator(const KEY &key, const MASK &mask) const
@@ -1038,18 +1038,18 @@ bool LLMenuItemBranchGL::hasAccelerator(const KEY &key, const MASK &mask) const
     return getBranch() && getBranch()->hasAccelerator(key, mask);
 }
 
-BOOL LLMenuItemBranchGL::handleAcceleratorKey(KEY key, MASK mask)
+bool LLMenuItemBranchGL::handleAcceleratorKey(KEY key, MASK mask)
 {
     return getBranch() && getBranch()->handleAcceleratorKey(key, mask);
 }
 
 // This function checks to see if the accelerator key is already in use;
 // if not, it will be added to the list
-BOOL LLMenuItemBranchGL::addToAcceleratorList(std::list<LLMenuKeyboardBinding*> *listp)
+bool LLMenuItemBranchGL::addToAcceleratorList(std::list<LLMenuKeyboardBinding*> *listp)
 {
     LLMenuGL* branch = getBranch();
     if (!branch)
-        return FALSE;
+        return false;
 
     U32 item_count = branch->getItemCount();
     LLMenuItemGL *item;
@@ -1062,7 +1062,7 @@ BOOL LLMenuItemBranchGL::addToAcceleratorList(std::list<LLMenuKeyboardBinding*>
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 
@@ -1090,9 +1090,9 @@ void LLMenuItemBranchGL::onCommit( void )
     LLUICtrl::onCommit();
 }
 
-BOOL LLMenuItemBranchGL::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLMenuItemBranchGL::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if (getBranch() && called_from_parent)
     {
         handled = getBranch()->handleKey(key, mask, called_from_parent);
@@ -1106,12 +1106,12 @@ BOOL LLMenuItemBranchGL::handleKey(KEY key, MASK mask, BOOL called_from_parent)
     return handled;
 }
 
-BOOL LLMenuItemBranchGL::handleUnicodeChar(llwchar uni_char, BOOL called_from_parent)
+bool LLMenuItemBranchGL::handleUnicodeChar(llwchar uni_char, bool called_from_parent)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if (getBranch() && called_from_parent)
     {
-        handled = getBranch()->handleUnicodeChar(uni_char, TRUE);
+        handled = getBranch()->handleUnicodeChar(uni_char, true);
     }
 
     if (!handled)
@@ -1123,7 +1123,7 @@ BOOL LLMenuItemBranchGL::handleUnicodeChar(llwchar uni_char, BOOL called_from_pa
 }
 
 
-void LLMenuItemBranchGL::setHighlight( BOOL highlight )
+void LLMenuItemBranchGL::setHighlight( bool highlight )
 {
     if (highlight == getHighlight())
         return;
@@ -1132,17 +1132,17 @@ void LLMenuItemBranchGL::setHighlight( BOOL highlight )
     if (!branch)
         return;
 
-    BOOL auto_open = getEnabled() && (!branch->getVisible() || branch->getTornOff());
+    bool auto_open = getEnabled() && (!branch->getVisible() || branch->getTornOff());
     // torn off menus don't open sub menus on hover unless they have focus
     LLFloater * menu_parent = dynamic_cast<LLFloater *>(getMenu()->getParent());
     if (getMenu()->getTornOff() && menu_parent && !menu_parent->hasFocus())
     {
-        auto_open = FALSE;
+        auto_open = false;
     }
     // don't auto open torn off sub-menus (need to explicitly active menu item to give them focus)
     if (branch->getTornOff())
     {
-        auto_open = FALSE;
+        auto_open = false;
     }
     LLMenuItemGL::setHighlight(highlight);
     if( highlight )
@@ -1159,13 +1159,13 @@ void LLMenuItemBranchGL::setHighlight( BOOL highlight )
             LLFloater * branch_parent = dynamic_cast<LLFloater *>(branch->getParent());
             if (branch_parent)
             {
-                branch_parent->setFocus(FALSE);
+                branch_parent->setFocus(false);
             }
             branch->clearHoverItem();
         }
         else
         {
-            branch->setVisible( FALSE );
+            branch->setVisible( false );
         }
     }
 }
@@ -1175,7 +1175,7 @@ void LLMenuItemBranchGL::draw()
     LLMenuItemGL::draw();
     if (getBranch() && getBranch()->getVisible() && !getBranch()->getTornOff())
     {
-        setHighlight(TRUE);
+        setHighlight(true);
     }
 }
 
@@ -1188,16 +1188,16 @@ void LLMenuItemBranchGL::updateBranchParent(LLView* parentp)
     }
 }
 
-void LLMenuItemBranchGL::onVisibilityChange( BOOL new_visibility )
+void LLMenuItemBranchGL::onVisibilityChange(bool new_visibility)
 {
-    if (new_visibility == FALSE && getBranch() && !getBranch()->getTornOff())
+    if (!new_visibility && getBranch() && !getBranch()->getTornOff())
     {
-        getBranch()->setVisible(FALSE);
+        getBranch()->setVisible(false);
     }
     LLMenuItemGL::onVisibilityChange(new_visibility);
 }
 
-BOOL LLMenuItemBranchGL::handleKeyHere( KEY key, MASK mask )
+bool LLMenuItemBranchGL::handleKeyHere(KEY key, MASK mask)
 {
     LLMenuGL* branch = getBranch();
     if (!branch)
@@ -1212,15 +1212,15 @@ BOOL LLMenuItemBranchGL::handleKeyHere( KEY key, MASK mask )
         if (branch->getVisible() && key == KEY_LEFT)
         {
             // switch to keyboard navigation mode
-            LLMenuGL::setKeyboardMode(TRUE);
+            LLMenuGL::setKeyboardMode(true);
 
-            BOOL handled = branch->clearHoverItem();
+            bool handled = branch->clearHoverItem();
             if (branch->getTornOff())
             {
                 LLFloater * branch_parent = dynamic_cast<LLFloater *>(branch->getParent());
                 if (branch_parent)
                 {
-                    branch_parent->setFocus(FALSE);
+                    branch_parent->setFocus(false);
                 }
             }
             if (handled && getMenu()->getTornOff())
@@ -1228,7 +1228,7 @@ BOOL LLMenuItemBranchGL::handleKeyHere( KEY key, MASK mask )
                 LLFloater * menu_parent = dynamic_cast<LLFloater *>(getMenu()->getParent());
                 if (menu_parent)
                 {
-                    menu_parent->setFocus(TRUE);
+                    menu_parent->setFocus(true);
                 }
             }
             return handled;
@@ -1237,12 +1237,12 @@ BOOL LLMenuItemBranchGL::handleKeyHere( KEY key, MASK mask )
         if (key == KEY_RIGHT && !branch->getHighlightedItem())
         {
             // switch to keyboard navigation mode
-            LLMenuGL::setKeyboardMode(TRUE);
+            LLMenuGL::setKeyboardMode(true);
 
             LLMenuItemGL* itemp = branch->highlightNextItem(NULL);
             if (itemp)
             {
-                return TRUE;
+                return true;
             }
         }
     }
@@ -1250,13 +1250,13 @@ BOOL LLMenuItemBranchGL::handleKeyHere( KEY key, MASK mask )
 }
 
 //virtual
-BOOL LLMenuItemBranchGL::isActive() const
+bool LLMenuItemBranchGL::isActive() const
 {
     return isOpen() && getBranch() && getBranch()->getHighlightedItem();
 }
 
 //virtual
-BOOL LLMenuItemBranchGL::isOpen() const
+bool LLMenuItemBranchGL::isOpen() const
 {
     return getBranch() && getBranch()->isOpen();
 }
@@ -1327,7 +1327,7 @@ void LLMenuItemBranchGL::openMenu()
         }
         branch->translate( delta_x, delta_y );
 
-        branch->setVisible( TRUE );
+        branch->setVisible( true );
         branch->getParent()->sendChildToFront(branch);
 
         dirtyRect();
@@ -1362,20 +1362,20 @@ public:
 
     // set the hover status (called by it's menu) and if the object is
     // active. This is used for behavior transfer.
-    virtual void setHighlight( BOOL highlight );
+    virtual void setHighlight( bool highlight );
 
-    virtual BOOL isActive( void ) const;
+    virtual bool isActive( void ) const;
 
     // LLView functionality
-    virtual BOOL handleMouseDown( S32 x, S32 y, MASK mask );
-    virtual BOOL handleMouseUp( S32 x, S32 y, MASK mask );
+    virtual bool handleMouseDown( S32 x, S32 y, MASK mask );
+    virtual bool handleMouseUp( S32 x, S32 y, MASK mask );
     virtual void draw( void );
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool handleKeyHere(KEY key, MASK mask);
 
-    virtual BOOL handleAcceleratorKey(KEY key, MASK mask);
+    virtual bool handleAcceleratorKey(KEY key, MASK mask);
 
     virtual void onFocusLost();
-    virtual void setFocus(BOOL b);
+    virtual void setFocus(bool b);
 };
 
 LLMenuItemBranchDownGL::LLMenuItemBranchDownGL( const Params& p) :
@@ -1407,7 +1407,7 @@ void LLMenuItemBranchDownGL::openMenu( void )
     LLMenuGL* branch = getBranch();
     if( branch->getVisible() && !branch->getTornOff() )
     {
-        branch->setVisible( FALSE );
+        branch->setVisible( false );
     }
     else
     {
@@ -1448,15 +1448,15 @@ void LLMenuItemBranchDownGL::openMenu( void )
             }
             branch->translate( delta_x, 0 );
 
-            setHighlight(TRUE);
-            branch->setVisible( TRUE );
+            setHighlight(true);
+            branch->setVisible( true );
             branch->getParent()->sendChildToFront(branch);
         }
     }
 }
 
 // set the hover status (called by it's menu)
-void LLMenuItemBranchDownGL::setHighlight( BOOL highlight )
+void LLMenuItemBranchDownGL::setHighlight( bool highlight )
 {
     if (highlight == getHighlight())
         return;
@@ -1475,18 +1475,18 @@ void LLMenuItemBranchDownGL::setHighlight( BOOL highlight )
             LLFloater * branch_parent = dynamic_cast<LLFloater *>(branch->getParent());
             if (branch_parent)
             {
-                branch_parent->setFocus(FALSE);
+                branch_parent->setFocus(false);
             }
             branch->clearHoverItem();
         }
         else
         {
-            branch->setVisible( FALSE );
+            branch->setVisible( false );
         }
     }
 }
 
-BOOL LLMenuItemBranchDownGL::isActive() const
+bool LLMenuItemBranchDownGL::isActive() const
 {
     // for top level menus, being open is sufficient to be considered
     // active, because clicking on them with the mouse will open
@@ -1494,10 +1494,10 @@ BOOL LLMenuItemBranchDownGL::isActive() const
     return isOpen();
 }
 
-BOOL LLMenuItemBranchDownGL::handleMouseDown( S32 x, S32 y, MASK mask )
+bool LLMenuItemBranchDownGL::handleMouseDown( S32 x, S32 y, MASK mask )
 {
     // switch to mouse control mode
-    LLMenuGL::setKeyboardMode(FALSE);
+    LLMenuGL::setKeyboardMode(false);
 
     if (getVisible() && isOpen())
     {
@@ -1509,19 +1509,19 @@ BOOL LLMenuItemBranchDownGL::handleMouseDown( S32 x, S32 y, MASK mask )
     }
 
     make_ui_sound("UISndClick");
-    return TRUE;
+    return true;
 }
 
-BOOL LLMenuItemBranchDownGL::handleMouseUp( S32 x, S32 y, MASK mask )
+bool LLMenuItemBranchDownGL::handleMouseUp( S32 x, S32 y, MASK mask )
 {
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLMenuItemBranchDownGL::handleAcceleratorKey(KEY key, MASK mask)
+bool LLMenuItemBranchDownGL::handleAcceleratorKey(KEY key, MASK mask)
 {
-    BOOL branch_visible = getBranch()->getVisible();
-    BOOL handled = getBranch()->handleAcceleratorKey(key, mask);
+    bool branch_visible = getBranch()->getVisible();
+    bool handled = getBranch()->handleAcceleratorKey(key, mask);
     if (handled && !branch_visible && isInVisibleChain())
     {
         // flash this menu entry because we triggered an invisible menu item
@@ -1534,11 +1534,11 @@ void LLMenuItemBranchDownGL::onFocusLost()
 {
     // needed for tab-based selection
     LLMenuItemBranchGL::onFocusLost();
-    LLMenuGL::setKeyboardMode(FALSE);
-    setHighlight(FALSE);
+    LLMenuGL::setKeyboardMode(false);
+    setHighlight(false);
 }
 
-void LLMenuItemBranchDownGL::setFocus(BOOL b)
+void LLMenuItemBranchDownGL::setFocus(bool b)
 {
     // needed for tab-based selection
     LLMenuItemBranchGL::setFocus(b);
@@ -1546,16 +1546,16 @@ void LLMenuItemBranchDownGL::setFocus(BOOL b)
     setHighlight(b);
 }
 
-BOOL LLMenuItemBranchDownGL::handleKeyHere(KEY key, MASK mask)
+bool LLMenuItemBranchDownGL::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL menu_open = getBranch()->getVisible();
+    bool menu_open = getBranch()->getVisible();
     // don't do keyboard navigation of top-level menus unless in keyboard mode, or menu expanded
     if (getHighlight() && getMenu()->isOpen() && (isActive() || LLMenuGL::getKeyboardMode()))
     {
         if (key == KEY_LEFT)
         {
             // switch to keyboard navigation mode
-            LLMenuGL::setKeyboardMode(TRUE);
+            LLMenuGL::setKeyboardMode(true);
 
             LLMenuItemGL* itemp = getMenu()->highlightPrevItem(this);
             // open new menu only if previous menu was open
@@ -1564,12 +1564,12 @@ BOOL LLMenuItemBranchDownGL::handleKeyHere(KEY key, MASK mask)
                 itemp->onCommit();
             }
 
-            return TRUE;
+            return true;
         }
         else if (key == KEY_RIGHT)
         {
             // switch to keyboard navigation mode
-            LLMenuGL::setKeyboardMode(TRUE);
+            LLMenuGL::setKeyboardMode(true);
 
             LLMenuItemGL* itemp = getMenu()->highlightNextItem(this);
             // open new menu only if previous menu was open
@@ -1578,35 +1578,35 @@ BOOL LLMenuItemBranchDownGL::handleKeyHere(KEY key, MASK mask)
                 itemp->onCommit();
             }
 
-            return TRUE;
+            return true;
         }
         else if (key == KEY_DOWN)
         {
             // switch to keyboard navigation mode
-            LLMenuGL::setKeyboardMode(TRUE);
+            LLMenuGL::setKeyboardMode(true);
 
             if (!isActive())
             {
                 onCommit();
             }
             getBranch()->highlightNextItem(NULL);
-            return TRUE;
+            return true;
         }
         else if (key == KEY_UP)
         {
             // switch to keyboard navigation mode
-            LLMenuGL::setKeyboardMode(TRUE);
+            LLMenuGL::setKeyboardMode(true);
 
             if (!isActive())
             {
                 onCommit();
             }
             getBranch()->highlightPrevItem(NULL);
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLMenuItemBranchDownGL::draw( void )
@@ -1614,7 +1614,7 @@ void LLMenuItemBranchDownGL::draw( void )
     //FIXME: try removing this
     if (getBranch()->getVisible() && !getBranch()->getTornOff())
     {
-        setHighlight(TRUE);
+        setHighlight(true);
     }
 
     if( getHighlight() )
@@ -1649,8 +1649,8 @@ void LLMenuItemBranchDownGL::draw( void )
         if (offset != std::string::npos)
         {
             S32 x_offset = ll_round((F32)getRect().getWidth() / 2.f - getFont()->getWidthF32(mLabel.getString(), 0, S32_MAX) / 2.f);
-            S32 x_begin = x_offset + getFont()->getWidth(mLabel, 0, offset);
-            S32 x_end = x_offset + getFont()->getWidth(mLabel, 0, offset + 1);
+            S32 x_begin = x_offset + getFont()->getWidth(mLabel, 0, static_cast<S32>(offset));
+            S32 x_end = x_offset + getFont()->getWidth(mLabel, 0, static_cast<S32>(offset) + 1);
             gl_line_2d(x_begin, LABEL_BOTTOM_PAD_PIXELS, x_end, LABEL_BOTTOM_PAD_PIXELS);
         }
     }
@@ -1686,8 +1686,8 @@ protected:
 
 public:
     /*virtual*/ void draw();
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent);
-    /*virtual*/ void setEnabled(BOOL enabled);
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent);
+    /*virtual*/ void setEnabled(bool enabled);
     virtual void onCommit( void );
 
 private:
@@ -1737,14 +1737,14 @@ void LLMenuScrollItem::draw()
 }
 
 /*virtual*/
-void LLMenuScrollItem::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLMenuScrollItem::reshape(S32 width, S32 height, bool called_from_parent)
 {
     mArrowBtn->reshape(width, height, called_from_parent);
     LLView::reshape(width, height, called_from_parent);
 }
 
 /*virtual*/
-void LLMenuScrollItem::setEnabled(BOOL enabled)
+void LLMenuScrollItem::setEnabled(bool enabled)
 {
     mArrowBtn->setEnabled(enabled);
     LLView::setEnabled(enabled);
@@ -1766,7 +1766,7 @@ LLMenuGL::LLMenuGL(const LLMenuGL::Params& p)
     mDropShadowed( p.drop_shadow ),
     mHasSelection(false),
     mHorizontalLayout( p.horizontal_layout ),
-    mScrollable(mHorizontalLayout ? FALSE : p.scrollable), // Scrolling is supported only for vertical layout
+    mScrollable(mHorizontalLayout ? false : p.scrollable), // Scrolling is supported only for vertical layout
     mMaxScrollableItems(p.max_scrollable_items),
     mPreferredWidth(p.preferred_width),
     mKeepFixedSize( p.keep_fixed_size ),
@@ -1775,7 +1775,7 @@ LLMenuGL::LLMenuGL(const LLMenuGL::Params& p)
     mLastMouseY(0),
     mMouseVelX(0),
     mMouseVelY(0),
-    mTornOff(FALSE),
+    mTornOff(false),
     mTearOffItem(NULL),
     mSpilloverBranch(NULL),
     mFirstVisibleItem(NULL),
@@ -1784,8 +1784,8 @@ LLMenuGL::LLMenuGL(const LLMenuGL::Params& p)
     mSpilloverMenu(NULL),
     mJumpKey(p.jump_key),
     mCreateJumpKeys(p.create_jump_keys),
-    mNeedsArrange(FALSE),
-    mAlwaysShowMenu(FALSE),
+    mNeedsArrange(false),
+    mAlwaysShowMenu(false),
     mResetScrollPositionOnShow(true),
     mShortcutPad(p.shortcut_pad),
     mFont(p.font)
@@ -1826,7 +1826,7 @@ LLMenuGL::~LLMenuGL( void )
     mJumpKeys.clear();
 }
 
-void LLMenuGL::setCanTearOff(BOOL tear_off)
+void LLMenuGL::setCanTearOff(bool tear_off)
 {
     if (tear_off && mTearOffItem == NULL)
     {
@@ -1916,7 +1916,7 @@ void LLMenuGL::removeChild( LLView* ctrl)
     return LLUICtrl::removeChild(ctrl);
 }
 
-BOOL LLMenuGL::postBuild()
+bool LLMenuGL::postBuild()
 {
     createJumpKeys();
     return LLUICtrl::postBuild();
@@ -1924,10 +1924,10 @@ BOOL LLMenuGL::postBuild()
 
 // are we the childmost active menu and hence our jump keys should be enabled?
 // or are we a free-standing torn-off menu (which uses jump keys too)
-BOOL LLMenuGL::jumpKeysActive()
+bool LLMenuGL::jumpKeysActive()
 {
     LLMenuItemGL* highlighted_item = getHighlightedItem();
-    BOOL active = getVisible() && getEnabled();
+    bool active = getVisible() && getEnabled();
 
     if (active)
     {
@@ -1953,7 +1953,7 @@ BOOL LLMenuGL::jumpKeysActive()
     return active;
 }
 
-BOOL LLMenuGL::isOpen()
+bool LLMenuGL::isOpen()
 {
     if (getTornOff())
     {
@@ -1962,7 +1962,7 @@ BOOL LLMenuGL::isOpen()
         // the open menu chain even if we don't have focus
         if (itemp && itemp->isOpen())
         {
-            return TRUE;
+            return true;
         }
         // otherwise we are only active if we have keyboard focus
         LLFloater * parent = dynamic_cast<LLFloater *>(getParent());
@@ -1970,7 +1970,7 @@ BOOL LLMenuGL::isOpen()
         {
             return parent->hasFocus();
         }
-        return FALSE;
+        return false;
     }
     else
     {
@@ -2068,7 +2068,7 @@ bool LLMenuGL::scrollItems(EScrollingDirection direction)
         // Otherwise viewer will hang for a time needed to scroll U32_MAX
         // times in std::advance(). STORM-659.
         size_t nitems = mItems.size();
-        U32 scrollable_items = nitems < mMaxScrollableItems ? nitems : mMaxScrollableItems;
+        U32 scrollable_items = nitems < mMaxScrollableItems ? static_cast<U32>(nitems) : mMaxScrollableItems;
 
         // Advance by mMaxScrollableItems back from the end of the list
         // to make the last item visible.
@@ -2080,7 +2080,7 @@ bool LLMenuGL::scrollItems(EScrollingDirection direction)
         LL_WARNS() << "Unknown scrolling direction: " << direction << LL_ENDL;
     }
 
-    mNeedsArrange = TRUE;
+    mNeedsArrange = true;
     arrangeAndClear();
 
     return true;
@@ -2337,11 +2337,11 @@ void LLMenuGL::arrange( void )
 
                 LLRect rect;
                 mArrowUpItem->setRect(rect.setLeftTopAndSize( 0, cur_height, width, mArrowUpItem->getNominalHeight()));
-                mArrowUpItem->setVisible(TRUE);
+                mArrowUpItem->setVisible(true);
                 mArrowUpItem->setEnabled(height_before_first_visible_item > MENU_ITEM_PADDING);
                 mArrowUpItem->reshape(width, mArrowUpItem->getNominalHeight());
                 mArrowDownItem->setRect(rect.setLeftTopAndSize( 0, mArrowDownItem->getNominalHeight(), width, mArrowDownItem->getNominalHeight()));
-                mArrowDownItem->setVisible(TRUE);
+                mArrowDownItem->setVisible(true);
                 mArrowDownItem->setEnabled(height_before_first_visible_item + visible_items_height < (S32)height);
                 mArrowDownItem->reshape(width, mArrowDownItem->getNominalHeight());
 
@@ -2353,11 +2353,11 @@ void LLMenuGL::arrange( void )
             {
                 if (NULL != mArrowUpItem)
                 {
-                    mArrowUpItem->setVisible(FALSE);
+                    mArrowUpItem->setVisible(false);
                 }
                 if (NULL != mArrowDownItem)
                 {
-                    mArrowDownItem->setVisible(FALSE);
+                    mArrowDownItem->setVisible(false);
                 }
             }
 
@@ -2420,7 +2420,7 @@ void LLMenuGL::arrangeAndClear( void )
     if (mNeedsArrange)
     {
         arrange();
-        mNeedsArrange = FALSE;
+        mNeedsArrange = false;
     }
 }
 
@@ -2482,7 +2482,7 @@ void LLMenuGL::cleanupSpilloverBranch()
 void LLMenuGL::createJumpKeys()
 {
     if (!mCreateJumpKeys) return;
-    mCreateJumpKeys = FALSE;
+    mCreateJumpKeys = false;
 
     mJumpKeys.clear();
 
@@ -2547,7 +2547,7 @@ void LLMenuGL::createJumpKeys()
         tokenizer tokens(uppercase_label, sep);
         tokenizer::iterator token_iter;
 
-        BOOL found_key = FALSE;
+        bool found_key = false;
         for( token_iter = tokens.begin(); token_iter != tokens.end(); ++token_iter)
         {
             std::string uppercase_word = *token_iter;
@@ -2565,7 +2565,7 @@ void LLMenuGL::createJumpKeys()
                     {
                         mJumpKeys.insert(std::pair<KEY, LLMenuItemGL*>(jump_key, (*item_it)));
                         (*item_it)->setJumpKey(jump_key);
-                        found_key = TRUE;
+                        found_key = true;
                         break;
                     }
                 }
@@ -2594,7 +2594,7 @@ void LLMenuGL::empty( void )
 // erase group of items from menu
 void LLMenuGL::erase( S32 begin, S32 end, bool arrange/* = true*/)
 {
-    S32 items = mItems.size();
+    auto items = mItems.size();
 
     if ( items == 0 || begin >= end || begin < 0 || end > items )
     {
@@ -2648,7 +2648,7 @@ void LLMenuGL::setLeftAndBottom(S32 left, S32 bottom)
     needsArrange();
 }
 
-BOOL LLMenuGL::handleJumpKey(KEY key)
+bool LLMenuGL::handleJumpKey(KEY key)
 {
     // must perform case-insensitive comparison, so just switch to uppercase input key
     key = toupper(key);
@@ -2656,31 +2656,31 @@ BOOL LLMenuGL::handleJumpKey(KEY key)
     if(found_it != mJumpKeys.end() && found_it->second->getEnabled())
     {
         // switch to keyboard navigation mode
-        LLMenuGL::setKeyboardMode(TRUE);
+        LLMenuGL::setKeyboardMode(true);
 
         // force highlight to close old menus and open and sub-menus
-        found_it->second->setHighlight(TRUE);
+        found_it->second->setHighlight(true);
         found_it->second->onCommit();
 
     }
     // if we are navigating the menus, we need to eat the keystroke
     // so rest of UI doesn't handle it
-    return TRUE;
+    return true;
 }
 
 
 // Add the menu item to this menu.
-BOOL LLMenuGL::append( LLMenuItemGL* item )
+bool LLMenuGL::append( LLMenuItemGL* item )
 {
-    if (!item) return FALSE;
+    if (!item) return false;
     mItems.push_back( item );
     LLUICtrl::addChild(item);
     needsArrange();
-    return TRUE;
+    return true;
 }
 
 // add a separator to this menu
-BOOL LLMenuGL::addSeparator()
+bool LLMenuGL::addSeparator()
 {
     LLMenuItemSeparatorGL::Params p;
     LLMenuItemGL* separator = LLUICtrlFactory::create<LLMenuItemSeparatorGL>(p);
@@ -2688,14 +2688,14 @@ BOOL LLMenuGL::addSeparator()
 }
 
 // add a menu - this will create a cascading menu
-BOOL LLMenuGL::appendMenu( LLMenuGL* menu )
+bool LLMenuGL::appendMenu( LLMenuGL* menu )
 {
     if( menu == this )
     {
         LL_ERRS() << "** Attempt to attach menu to itself. This is certainly "
                << "a logic error." << LL_ENDL;
     }
-    BOOL success = TRUE;
+    bool success = true;
 
     LLMenuItemBranchGL::Params p;
     p.name = menu->getName();
@@ -2717,7 +2717,7 @@ BOOL LLMenuGL::appendMenu( LLMenuGL* menu )
 }
 
 // add a context menu branch
-BOOL LLMenuGL::appendContextSubMenu(LLMenuGL *menu)
+bool LLMenuGL::appendContextSubMenu(LLMenuGL *menu)
 {
     if (menu == this)
     {
@@ -2740,7 +2740,7 @@ BOOL LLMenuGL::appendContextSubMenu(LLMenuGL *menu)
     return append( item );
 }
 
-void LLMenuGL::setEnabledSubMenus(BOOL enable)
+void LLMenuGL::setEnabledSubMenus(bool enable)
 {
     setEnabled(enable);
     item_list_t::iterator item_iter;
@@ -2751,8 +2751,8 @@ void LLMenuGL::setEnabledSubMenus(BOOL enable)
 }
 
 // setItemEnabled() - pass the label and the enable flag for a menu
-// item. TRUE will make sure it's enabled, FALSE will disable it.
-void LLMenuGL::setItemEnabled( const std::string& name, BOOL enable )
+// item. true will make sure it's enabled, false will disable it.
+void LLMenuGL::setItemEnabled( const std::string& name, bool enable )
 {
     item_list_t::iterator item_iter;
     for (item_iter = mItems.begin(); item_iter != mItems.end(); ++item_iter)
@@ -2766,7 +2766,7 @@ void LLMenuGL::setItemEnabled( const std::string& name, BOOL enable )
     }
 }
 
-void LLMenuGL::setItemVisible( const std::string& name, BOOL visible )
+void LLMenuGL::setItemVisible( const std::string& name, bool visible )
 {
     item_list_t::iterator item_iter;
     for (item_iter = mItems.begin(); item_iter != mItems.end(); ++item_iter)
@@ -2801,19 +2801,19 @@ void LLMenuGL::setItemLastSelected(LLMenuItemGL* item)
 }
 
 //  Set whether drop shadowed
-void LLMenuGL::setDropShadowed( const BOOL shadowed )
+void LLMenuGL::setDropShadowed( const bool shadowed )
 {
     mDropShadowed = shadowed;
 }
 
-void LLMenuGL::setTornOff(BOOL torn_off)
+void LLMenuGL::setTornOff(bool torn_off)
 {
     mTornOff = torn_off;
 }
 
 U32 LLMenuGL::getItemCount()
 {
-    return mItems.size();
+    return static_cast<U32>(mItems.size());
 }
 
 LLMenuItemGL* LLMenuGL::getItem(S32 number)
@@ -2859,7 +2859,7 @@ LLMenuItemGL* LLMenuGL::getHighlightedItem()
     return NULL;
 }
 
-LLMenuItemGL* LLMenuGL::highlightNextItem(LLMenuItemGL* cur_item, BOOL skip_disabled)
+LLMenuItemGL* LLMenuGL::highlightNextItem(LLMenuItemGL* cur_item, bool skip_disabled)
 {
     if (mItems.empty()) return NULL;
     // highlighting first item on a torn off menu is the
@@ -2869,7 +2869,7 @@ LLMenuItemGL* LLMenuGL::highlightNextItem(LLMenuItemGL* cur_item, BOOL skip_disa
         LLFloater * parent = dynamic_cast<LLFloater *>(getParent());
         if (parent)
         {
-            parent->setFocus(TRUE);
+            parent->setFocus(true);
         }
     }
 
@@ -2938,9 +2938,9 @@ LLMenuItemGL* LLMenuGL::highlightNextItem(LLMenuItemGL* cur_item, BOOL skip_disa
         {
             if (cur_item)
             {
-                cur_item->setHighlight(FALSE);
+                cur_item->setHighlight(false);
             }
-            (*next_item_iter)->setHighlight(TRUE);
+            (*next_item_iter)->setHighlight(true);
             return (*next_item_iter);
         }
 
@@ -2964,7 +2964,7 @@ LLMenuItemGL* LLMenuGL::highlightNextItem(LLMenuItemGL* cur_item, BOOL skip_disa
     return NULL;
 }
 
-LLMenuItemGL* LLMenuGL::highlightPrevItem(LLMenuItemGL* cur_item, BOOL skip_disabled)
+LLMenuItemGL* LLMenuGL::highlightPrevItem(LLMenuItemGL* cur_item, bool skip_disabled)
 {
     if (mItems.empty()) return NULL;
 
@@ -2975,7 +2975,7 @@ LLMenuItemGL* LLMenuGL::highlightPrevItem(LLMenuItemGL* cur_item, BOOL skip_disa
         LLFloater * parent = dynamic_cast<LLFloater *>(getParent());
         if (parent)
         {
-            parent->setFocus(TRUE);
+            parent->setFocus(true);
         }
     }
 
@@ -3030,7 +3030,7 @@ LLMenuItemGL* LLMenuGL::highlightPrevItem(LLMenuItemGL* cur_item, BOOL skip_disa
         // skip separators and disabled/invisible items
         if ((*prev_item_iter)->getEnabled() && (*prev_item_iter)->getVisible() && (*prev_item_iter)->getName() != SEPARATOR_NAME)
         {
-            (*prev_item_iter)->setHighlight(TRUE);
+            (*prev_item_iter)->setHighlight(true);
             return (*prev_item_iter);
         }
 
@@ -3101,12 +3101,12 @@ bool LLMenuGL::hasAccelerator(const KEY &key, const MASK &mask) const
     return false;
 }
 
-BOOL LLMenuGL::handleAcceleratorKey(KEY key, MASK mask)
+bool LLMenuGL::handleAcceleratorKey(KEY key, MASK mask)
 {
     // don't handle if not enabled
     if(!getEnabled())
     {
-        return FALSE;
+        return false;
     }
 
     // Pass down even if not visible
@@ -3116,26 +3116,26 @@ BOOL LLMenuGL::handleAcceleratorKey(KEY key, MASK mask)
         LLMenuItemGL* itemp = *item_iter;
         if (itemp->handleAcceleratorKey(key, mask))
         {
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLMenuGL::handleUnicodeCharHere( llwchar uni_char )
+bool LLMenuGL::handleUnicodeCharHere( llwchar uni_char )
 {
     if (jumpKeysActive())
     {
         return handleJumpKey((KEY)uni_char);
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLMenuGL::handleHover( S32 x, S32 y, MASK mask )
+bool LLMenuGL::handleHover( S32 x, S32 y, MASK mask )
 {
     // leave submenu in place if slope of mouse < MAX_MOUSE_SLOPE_SUB_MENU
-    BOOL no_mouse_data = mLastMouseX == 0 && mLastMouseY == 0;
+    bool no_mouse_data = mLastMouseX == 0 && mLastMouseY == 0;
     S32 mouse_delta_x = no_mouse_data ? 0 : x - mLastMouseX;
     S32 mouse_delta_y = no_mouse_data ? 0 : y - mLastMouseY;
     LLVector2 mouse_dir((F32)mouse_delta_x, (F32)mouse_delta_y);
@@ -3166,7 +3166,7 @@ BOOL LLMenuGL::handleHover( S32 x, S32 y, MASK mask )
                 // moving mouse always highlights new item
                 if (mouse_delta_x != 0 || mouse_delta_y != 0)
                 {
-                    ((LLMenuItemGL*)viewp)->setHighlight(FALSE);
+                    ((LLMenuItemGL*)viewp)->setHighlight(false);
                 }
             }
         }
@@ -3188,8 +3188,8 @@ BOOL LLMenuGL::handleHover( S32 x, S32 y, MASK mask )
                 // moving mouse always highlights new item
                 if (mouse_delta_x != 0 || mouse_delta_y != 0)
                 {
-                    ((LLMenuItemGL*)viewp)->setHighlight(TRUE);
-                    LLMenuGL::setKeyboardMode(FALSE);
+                    ((LLMenuItemGL*)viewp)->setHighlight(true);
+                    LLMenuGL::setKeyboardMode(false);
                 }
                 mHasSelection = true;
             }
@@ -3202,10 +3202,10 @@ BOOL LLMenuGL::handleHover( S32 x, S32 y, MASK mask )
     // drop-down menu is shown. Otherwise any other view won't be able to handle mouse events
     // until the user chooses one of the drop-down menu items.
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLMenuGL::handleScrollWheel( S32 x, S32 y, S32 clicks )
+bool LLMenuGL::handleScrollWheel( S32 x, S32 y, S32 clicks )
 {
     if (!mScrollable)
         return blockMouseEvent(x, y);
@@ -3221,7 +3221,7 @@ BOOL LLMenuGL::handleScrollWheel( S32 x, S32 y, S32 clicks )
             scrollItems(SD_UP);
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -3230,7 +3230,7 @@ void LLMenuGL::draw( void )
     if (mNeedsArrange)
     {
         arrange();
-        mNeedsArrange = FALSE;
+        mNeedsArrange = false;
     }
     if (mDropShadowed && !mTornOff)
     {
@@ -3254,7 +3254,7 @@ void LLMenuGL::drawBackground(LLMenuItemGL* itemp, F32 alpha)
     gl_rect_2d( 0, item_rect.getHeight(), item_rect.getWidth(), 0);
 }
 
-void LLMenuGL::setVisible(BOOL visible)
+void LLMenuGL::setVisible(bool visible)
 {
     if (visible != getVisible())
     {
@@ -3277,7 +3277,7 @@ void LLMenuGL::setVisible(BOOL visible)
     }
 }
 
-LLMenuGL* LLMenuGL::findChildMenuByName(const std::string& name, BOOL recurse) const
+LLMenuGL* LLMenuGL::findChildMenuByName(const std::string& name, bool recurse) const
 {
     LLView* view = findChildView(name, recurse);
     if (view)
@@ -3298,23 +3298,23 @@ LLMenuGL* LLMenuGL::findChildMenuByName(const std::string& name, BOOL recurse) c
     return NULL;
 }
 
-BOOL LLMenuGL::clearHoverItem()
+bool LLMenuGL::clearHoverItem()
 {
     for ( child_list_const_iter_t child_it = getChildList()->begin(); child_it != getChildList()->end(); ++child_it)
     {
         LLMenuItemGL* itemp = (LLMenuItemGL*)*child_it;
         if (itemp->getHighlight())
         {
-            itemp->setHighlight(FALSE);
-            return TRUE;
+            itemp->setHighlight(false);
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 void hide_top_view( LLView* view )
 {
-    if( view ) view->setVisible( FALSE );
+    if( view ) view->setVisible( false );
 }
 
 
@@ -3331,12 +3331,12 @@ void LLMenuGL::showPopup(LLView* spawning_view, LLMenuGL* menu, S32 x, S32 y, S3
         return;
     }
 
-    menu->setVisible( TRUE );
+    menu->setVisible( true );
 
     if(!menu->getAlwaysShowMenu())
     {
         //Do not show menu if all menu items are disabled
-        BOOL item_enabled = false;
+        bool item_enabled = false;
         for (LLView::child_list_t::const_iterator itor = menu->getChildList()->begin();
                 itor != menu->getChildList()->end();
                 ++itor)
@@ -3347,7 +3347,7 @@ void LLMenuGL::showPopup(LLView* spawning_view, LLMenuGL* menu, S32 x, S32 y, S3
 
         if(!item_enabled)
         {
-            menu->setVisible( FALSE );
+            menu->setVisible( false );
             return;
         }
     }
@@ -3412,7 +3412,7 @@ static LLDefaultChildRegistry::Register<LLMenuBarGL> r2("menu_bar");
 
 LLMenuBarGL::LLMenuBarGL( const Params& p )
 :   LLMenuGL(p),
-    mAltKeyTrigger(FALSE)
+    mAltKeyTrigger(false)
 {}
 
 // Default destructor
@@ -3422,19 +3422,19 @@ LLMenuBarGL::~LLMenuBarGL()
     mAccelerators.clear();
 }
 
-BOOL LLMenuBarGL::handleAcceleratorKey(KEY key, MASK mask)
+bool LLMenuBarGL::handleAcceleratorKey(KEY key, MASK mask)
 {
     if (getHighlightedItem() && mask == MASK_NONE)
     {
         // unmodified key accelerators are ignored when navigating menu
         // (but are used as jump keys so will still work when appropriate menu is up)
-        return FALSE;
+        return false;
     }
-    BOOL result = LLMenuGL::handleAcceleratorKey(key, mask);
+    bool result = LLMenuGL::handleAcceleratorKey(key, mask);
     if (result && mask & MASK_ALT)
     {
         // ALT key used to trigger hotkey, don't use as shortcut to open menu
-        mAltKeyTrigger = FALSE;
+        mAltKeyTrigger = false;
     }
 
     if(!result
@@ -3445,16 +3445,16 @@ BOOL LLMenuBarGL::handleAcceleratorKey(KEY key, MASK mask)
         if (getHighlightedItem())
         {
             clearHoverItem();
-            LLMenuGL::setKeyboardMode(FALSE);
+            LLMenuGL::setKeyboardMode(false);
         }
         else
         {
             // close menus originating from other menu bars when first opening menu via keyboard
             LLMenuGL::sMenuContainer->hideMenus();
             highlightNextItem(NULL);
-            LLMenuGL::setKeyboardMode(TRUE);
+            LLMenuGL::setKeyboardMode(true);
         }
-        return TRUE;
+        return true;
     }
 
     if (result && !getHighlightedItem() && LLMenuGL::sMenuContainer->hasVisibleMenu())
@@ -3466,22 +3466,22 @@ BOOL LLMenuBarGL::handleAcceleratorKey(KEY key, MASK mask)
     return result;
 }
 
-BOOL LLMenuBarGL::handleKeyHere(KEY key, MASK mask)
+bool LLMenuBarGL::handleKeyHere(KEY key, MASK mask)
 {
     static LLUICachedControl<bool> use_altkey_for_menus ("UseAltKeyForMenus", 0);
     if(key == KEY_ALT && !gKeyboard->getKeyRepeated(key) && use_altkey_for_menus)
     {
-        mAltKeyTrigger = TRUE;
+        mAltKeyTrigger = true;
     }
     else // if any key other than ALT hit, clear out waiting for Alt key mode
     {
-        mAltKeyTrigger = FALSE;
+        mAltKeyTrigger = false;
     }
 
     if (key == KEY_ESCAPE && mask == MASK_NONE)
     {
-        LLMenuGL::setKeyboardMode(FALSE);
-        // if any menus are visible, this will return TRUE, stopping further processing of ESCAPE key
+        LLMenuGL::setKeyboardMode(false);
+        // if any menus are visible, this will return true, stopping further processing of ESCAPE key
         return LLMenuGL::sMenuContainer->hideMenus();
     }
 
@@ -3491,7 +3491,7 @@ BOOL LLMenuBarGL::handleKeyHere(KEY key, MASK mask)
     return LLMenuGL::handleKeyHere(key, mask);
 }
 
-BOOL LLMenuBarGL::handleJumpKey(KEY key)
+bool LLMenuBarGL::handleJumpKey(KEY key)
 {
     // perform case-insensitive comparison
     key = toupper(key);
@@ -3499,15 +3499,15 @@ BOOL LLMenuBarGL::handleJumpKey(KEY key)
     if(found_it != mJumpKeys.end() && found_it->second->getEnabled())
     {
         // switch to keyboard navigation mode
-        LLMenuGL::setKeyboardMode(TRUE);
+        LLMenuGL::setKeyboardMode(true);
 
-        found_it->second->setHighlight(TRUE);
+        found_it->second->setHighlight(true);
         found_it->second->onCommit();
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLMenuBarGL::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLMenuBarGL::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // clicks on menu bar closes existing menus from other contexts but leave
     // own menu open so that we get toggle behavior
@@ -3519,7 +3519,7 @@ BOOL LLMenuBarGL::handleMouseDown(S32 x, S32 y, MASK mask)
     return LLMenuGL::handleMouseDown(x, y, mask);
 }
 
-BOOL LLMenuBarGL::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLMenuBarGL::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     return LLMenuGL::handleMouseDown(x, y, mask);
 }
@@ -3563,14 +3563,14 @@ void LLMenuBarGL::checkMenuTrigger()
                 LLMenuGL::sMenuContainer->hideMenus();
 
                 highlightNextItem(NULL);
-                LLMenuGL::setKeyboardMode(TRUE);
+                LLMenuGL::setKeyboardMode(true);
             }
         }
-        mAltKeyTrigger = FALSE;
+        mAltKeyTrigger = false;
     }
 }
 
-BOOL LLMenuBarGL::jumpKeysActive()
+bool LLMenuBarGL::jumpKeysActive()
 {
     // require user to be in keyboard navigation mode to activate key triggers
     // as menu bars are always visible and it is easy to leave the mouse cursor over them
@@ -3619,14 +3619,14 @@ S32 LLMenuBarGL::getRightmostMenuEdge()
 }
 
 // add a vertical separator to this menu
-BOOL LLMenuBarGL::addSeparator()
+bool LLMenuBarGL::addSeparator()
 {
     LLMenuItemGL* separator = new LLMenuItemVerticalSeparatorGL();
     return append( separator );
 }
 
 // add a menu - this will create a drop down menu.
-BOOL LLMenuBarGL::appendMenu( LLMenuGL* menu )
+bool LLMenuBarGL::appendMenu( LLMenuGL* menu )
 {
     if( menu == this )
     {
@@ -3634,7 +3634,7 @@ BOOL LLMenuBarGL::appendMenu( LLMenuGL* menu )
                << "a logic error." << LL_ENDL;
     }
 
-    BOOL success = TRUE;
+    bool success = true;
 
     // *TODO: Hack! Fix this
     LLMenuItemBranchDownGL::Params p;
@@ -3657,12 +3657,12 @@ BOOL LLMenuBarGL::appendMenu( LLMenuGL* menu )
     return success;
 }
 
-BOOL LLMenuBarGL::handleHover( S32 x, S32 y, MASK mask )
+bool LLMenuBarGL::handleHover( S32 x, S32 y, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     LLView* active_menu = NULL;
 
-    BOOL no_mouse_data = mLastMouseX == 0 && mLastMouseY == 0;
+    bool no_mouse_data = mLastMouseX == 0 && mLastMouseY == 0;
     S32 mouse_delta_x = no_mouse_data ? 0 : x - mLastMouseX;
     S32 mouse_delta_y = no_mouse_data ? 0 : y - mLastMouseY;
     mMouseVelX = (mMouseVelX / 2) + (mouse_delta_x / 2);
@@ -3695,14 +3695,14 @@ BOOL LLMenuBarGL::handleHover( S32 x, S32 y, MASK mask )
                 viewp->pointInView(local_x, local_y) &&
                 viewp->handleHover(local_x, local_y, mask))
             {
-                ((LLMenuItemGL*)viewp)->setHighlight(TRUE);
-                handled = TRUE;
+                ((LLMenuItemGL*)viewp)->setHighlight(true);
+                handled = true;
                 if (active_menu && active_menu != viewp)
                 {
                     ((LLMenuItemGL*)viewp)->onCommit();
-                    LLMenuGL::setKeyboardMode(FALSE);
+                    LLMenuGL::setKeyboardMode(false);
                 }
-                LLMenuGL::setKeyboardMode(FALSE);
+                LLMenuGL::setKeyboardMode(false);
             }
         }
 
@@ -3716,7 +3716,7 @@ BOOL LLMenuBarGL::handleHover( S32 x, S32 y, MASK mask )
                 S32 local_y = y - viewp->getRect().mBottom;
                 if (!viewp->pointInView(local_x, local_y) && ((LLMenuItemGL*)viewp)->getHighlight())
                 {
-                    ((LLMenuItemGL*)viewp)->setHighlight(FALSE);
+                    ((LLMenuItemGL*)viewp)->setHighlight(false);
                 }
             }
         }
@@ -3724,7 +3724,7 @@ BOOL LLMenuBarGL::handleHover( S32 x, S32 y, MASK mask )
 
     getWindow()->setCursor(UI_CURSOR_ARROW);
 
-    return TRUE;
+    return true;
 }
 
 ///============================================================================
@@ -3736,7 +3736,7 @@ LLMenuHolderGL::LLMenuHolderGL(const LLMenuHolderGL::Params& p)
     : LLPanel(p)
 {
     sItemActivationTimer.stop();
-    mCanHide = TRUE;
+    mCanHide = true;
 }
 
 void LLMenuHolderGL::draw()
@@ -3764,9 +3764,9 @@ void LLMenuHolderGL::draw()
     }
 }
 
-BOOL LLMenuHolderGL::handleMouseDown( S32 x, S32 y, MASK mask )
+bool LLMenuHolderGL::handleMouseDown( S32 x, S32 y, MASK mask )
 {
-    BOOL handled = LLView::childrenHandleMouseDown(x, y, mask) != NULL;
+    bool handled = LLView::childrenHandleMouseDown(x, y, mask) != NULL;
     if (!handled)
     {
         LLMenuGL* visible_menu = (LLMenuGL*)getVisibleMenu();
@@ -3791,9 +3791,9 @@ BOOL LLMenuHolderGL::handleMouseDown( S32 x, S32 y, MASK mask )
     return handled;
 }
 
-BOOL LLMenuHolderGL::handleRightMouseDown( S32 x, S32 y, MASK mask )
+bool LLMenuHolderGL::handleRightMouseDown( S32 x, S32 y, MASK mask )
 {
-    BOOL handled = LLView::childrenHandleRightMouseDown(x, y, mask) != NULL;
+    bool handled = LLView::childrenHandleRightMouseDown(x, y, mask) != NULL;
     if (!handled)
     {
         // clicked off of menu, hide them all
@@ -3804,7 +3804,7 @@ BOOL LLMenuHolderGL::handleRightMouseDown( S32 x, S32 y, MASK mask )
 
 // This occurs when you mouse-down to spawn a context menu, hold the button
 // down, move off the menu, then mouse-up.  We want this to close the menu.
-BOOL LLMenuHolderGL::handleRightMouseUp( S32 x, S32 y, MASK mask )
+bool LLMenuHolderGL::handleRightMouseUp( S32 x, S32 y, MASK mask )
 {
     const S32 SLOP = 2;
     S32 spawn_dx = (x - sContextMenuSpawnPos.mX);
@@ -3816,10 +3816,10 @@ BOOL LLMenuHolderGL::handleRightMouseUp( S32 x, S32 y, MASK mask )
         // so interpret the mouse-up as a single-click to show and leave on
         // screen
         sContextMenuSpawnPos.set(S32_MAX, S32_MAX);
-        return TRUE;
+        return true;
     }
 
-    BOOL handled = LLView::childrenHandleRightMouseUp(x, y, mask) != NULL;
+    bool handled = LLView::childrenHandleRightMouseUp(x, y, mask) != NULL;
     if (!handled)
     {
         // clicked off of menu, hide them all
@@ -3828,9 +3828,9 @@ BOOL LLMenuHolderGL::handleRightMouseUp( S32 x, S32 y, MASK mask )
     return handled;
 }
 
-BOOL LLMenuHolderGL::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLMenuHolderGL::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
-    BOOL handled =  false;
+    bool handled =  false;
     LLMenuGL* const  pMenu  = dynamic_cast<LLMenuGL*>(getVisibleMenu());
 
     if (pMenu)
@@ -3838,7 +3838,7 @@ BOOL LLMenuHolderGL::handleKey(KEY key, MASK mask, BOOL called_from_parent)
         //eat TAB key - EXT-7000
         if (key == KEY_TAB && mask == MASK_NONE)
         {
-            return TRUE;
+            return true;
         }
 
         //handle ESCAPE and RETURN key
@@ -3847,7 +3847,7 @@ BOOL LLMenuHolderGL::handleKey(KEY key, MASK mask, BOOL called_from_parent)
         {
             if (pMenu->getHighlightedItem())
             {
-                handled = pMenu->handleKey(key, mask, TRUE);
+                handled = pMenu->handleKey(key, mask, true);
             }
             else if (mask == MASK_NONE || (key >= KEY_LEFT && key <= KEY_DOWN))
             {
@@ -3864,7 +3864,7 @@ BOOL LLMenuHolderGL::handleKey(KEY key, MASK mask, BOOL called_from_parent)
 
 }
 
-void LLMenuHolderGL::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLMenuHolderGL::reshape(S32 width, S32 height, bool called_from_parent)
 {
     if (width != getRect().getWidth() || height != getRect().getHeight())
     {
@@ -3887,14 +3887,14 @@ LLView* const LLMenuHolderGL::getVisibleMenu() const
 }
 
 
-BOOL LLMenuHolderGL::hideMenus()
+bool LLMenuHolderGL::hideMenus()
 {
     if (!mCanHide)
     {
-        return FALSE;
+        return false;
     }
-    LLMenuGL::setKeyboardMode(FALSE);
-    BOOL menu_visible = hasVisibleMenu();
+    LLMenuGL::setKeyboardMode(false);
+    bool menu_visible = hasVisibleMenu();
     if (menu_visible)
     {
         // clicked off of menu, hide them all
@@ -3903,7 +3903,7 @@ BOOL LLMenuHolderGL::hideMenus()
             LLView* viewp = *child_it;
             if (dynamic_cast<LLMenuGL*>(viewp) != NULL && viewp->getVisible())
             {
-                viewp->setVisible(FALSE);
+                viewp->setVisible(false);
             }
         }
     }
@@ -3932,9 +3932,9 @@ LLTearOffMenu::LLTearOffMenu(LLMenuGL* menup) :
 
     setName(menup->getName());
     setTitle(menup->getLabel());
-    setCanMinimize(FALSE);
+    setCanMinimize(false);
     // flag menu as being torn off
-    menup->setTornOff(TRUE);
+    menup->setTornOff(true);
     // update menu layout as torn off menu (no spillover menus)
     menup->needsArrange();
 
@@ -3949,12 +3949,12 @@ LLTearOffMenu::LLTearOffMenu(LLMenuGL* menup) :
     menup->setFollows( FOLLOWS_LEFT | FOLLOWS_BOTTOM );
     mOldParent = menup->getParent();
     addChild(menup);
-    menup->setVisible(TRUE);
+    menup->setVisible(true);
     LLRect menu_rect = menup->getRect();
     menu_rect.setOriginAndSize( 1, 1,
         menu_rect.getWidth(), menu_rect.getHeight());
     menup->setRect(menu_rect);
-    menup->setDropShadowed(FALSE);
+    menup->setDropShadowed(false);
 
     mMenu = menup;
 
@@ -4002,7 +4002,7 @@ void LLTearOffMenu::onFocusReceived()
     {
         if (parent_menu_item->getMenu()->getVisible())
         {
-            parent_menu_item->setHighlight(TRUE);
+            parent_menu_item->setHighlight(true);
             parent_menu_item = parent_menu_item->getMenu()->getParentMenuItem();
         }
         else
@@ -4020,29 +4020,29 @@ void LLTearOffMenu::onFocusLost()
     LLFloater::onFocusLost();
 }
 
-BOOL LLTearOffMenu::handleUnicodeChar(llwchar uni_char, BOOL called_from_parent)
+bool LLTearOffMenu::handleUnicodeChar(llwchar uni_char, bool called_from_parent)
 {
     // pass keystrokes down to menu
-    return mMenu->handleUnicodeChar(uni_char, TRUE);
+    return mMenu->handleUnicodeChar(uni_char, true);
 }
 
-BOOL LLTearOffMenu::handleKeyHere(KEY key, MASK mask)
+bool LLTearOffMenu::handleKeyHere(KEY key, MASK mask)
 {
     if (!mMenu->getHighlightedItem())
     {
         if (key == KEY_UP)
         {
             mMenu->highlightPrevItem(NULL);
-            return TRUE;
+            return true;
         }
         else if (key == KEY_DOWN)
         {
             mMenu->highlightNextItem(NULL);
-            return TRUE;
+            return true;
         }
     }
     // pass keystrokes down to menu
-    return mMenu->handleKey(key, mask, TRUE);
+    return mMenu->handleKey(key, mask, true);
 }
 
 void LLTearOffMenu::translate(S32 x, S32 y)
@@ -4060,7 +4060,7 @@ LLTearOffMenu* LLTearOffMenu::create(LLMenuGL* menup)
 {
     LLTearOffMenu* tearoffp = new LLTearOffMenu(menup);
     // keep onscreen
-    gFloaterView->adjustToFitScreen(tearoffp, FALSE);
+    gFloaterView->adjustToFitScreen(tearoffp, false);
     tearoffp->openFloater(LLSD());
 
     return tearoffp;
@@ -4097,10 +4097,10 @@ void LLTearOffMenu::closeTearOff()
     mOldParent->addChild(mMenu);
     mMenu->clearHoverItem();
     mMenu->setFollowsNone();
-    mMenu->setBackgroundVisible(TRUE);
-    mMenu->setVisible(FALSE);
-    mMenu->setTornOff(FALSE);
-    mMenu->setDropShadowed(TRUE);
+    mMenu->setBackgroundVisible(true);
+    mMenu->setVisible(false);
+    mMenu->setTornOff(false);
+    mMenu->setDropShadowed(true);
     mQuitRequested = true;
 }
 
@@ -4134,19 +4134,19 @@ void LLContextMenuBranch::buildDrawLabel( void )
         // enabled, this item is enabled. JC
         U32 sub_count = menu->getItemCount();
         U32 i;
-        BOOL any_enabled = FALSE;
+        bool any_enabled = false;
         for (i = 0; i < sub_count; i++)
         {
             LLMenuItemGL* item = menu->getItem(i);
             item->buildDrawLabel();
             if (item->getEnabled() && !item->getDrawTextDisabled() )
             {
-                any_enabled = TRUE;
+                any_enabled = true;
                 break;
             }
         }
         setDrawTextDisabled(!any_enabled);
-        setEnabled(TRUE);
+        setEnabled(true);
     }
 
     mDrawAccelLabel.clear();
@@ -4179,7 +4179,7 @@ void LLContextMenuBranch::onCommit( void )
     showSubMenu();
 
 }
-void LLContextMenuBranch::setHighlight( BOOL highlight )
+void LLContextMenuBranch::setHighlight( bool highlight )
 {
     if (highlight == getHighlight()) return;
     LLMenuItemGL::setHighlight(highlight);
@@ -4209,13 +4209,13 @@ static MenuRegistry::Register<LLContextMenu> context_menu_register2("context_men
 
 LLContextMenu::LLContextMenu(const Params& p)
 :   LLMenuGL(p),
-    mHoveredAnyItem(FALSE),
+    mHoveredAnyItem(false),
     mHoverItem(NULL)
 {
-    //setBackgroundVisible(TRUE);
+    //setBackgroundVisible(true);
 }
 
-void LLContextMenu::setVisible(BOOL visible)
+void LLContextMenu::setVisible(bool visible)
 {
     if (!visible)
         hide();
@@ -4284,53 +4284,53 @@ void LLContextMenu::show(S32 x, S32 y, LLView* spawning_view)
     {
         mSpawningViewHandle.markDead();
     }
-    LLView::setVisible(TRUE);
+    LLView::setVisible(true);
 }
 
 void LLContextMenu::hide()
 {
     if (!getVisible()) return;
 
-    LLView::setVisible(FALSE);
+    LLView::setVisible(false);
 
     if (mHoverItem)
     {
-        mHoverItem->setHighlight( FALSE );
+        mHoverItem->setHighlight( false );
     }
     mHoverItem = NULL;
 }
 
 
-BOOL LLContextMenu::handleHover( S32 x, S32 y, MASK mask )
+bool LLContextMenu::handleHover( S32 x, S32 y, MASK mask )
 {
     LLMenuGL::handleHover(x,y,mask);
 
-    BOOL handled = FALSE;
+    bool handled = false;
 
     LLMenuItemGL *item = getHighlightedItem();
 
     if (item && item->getEnabled())
     {
         getWindow()->setCursor(UI_CURSOR_ARROW);
-        handled = TRUE;
+        handled = true;
 
         if (item != mHoverItem)
         {
             if (mHoverItem)
             {
-                mHoverItem->setHighlight( FALSE );
+                mHoverItem->setHighlight( false );
             }
             mHoverItem = item;
-            mHoverItem->setHighlight( TRUE );
+            mHoverItem->setHighlight( true );
         }
-        mHoveredAnyItem = TRUE;
+        mHoveredAnyItem = true;
     }
     else
     {
         // clear out our selection
         if (mHoverItem)
         {
-            mHoverItem->setHighlight(FALSE);
+            mHoverItem->setHighlight(false);
             mHoverItem = NULL;
         }
     }
@@ -4338,7 +4338,7 @@ BOOL LLContextMenu::handleHover( S32 x, S32 y, MASK mask )
     if( !handled && pointInView( x, y ) )
     {
         getWindow()->setCursor(UI_CURSOR_ARROW);
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
@@ -4347,9 +4347,9 @@ BOOL LLContextMenu::handleHover( S32 x, S32 y, MASK mask )
 // handleMouseDown and handleMouseUp are handled by LLMenuGL
 
 
-BOOL LLContextMenu::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLContextMenu::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     // The click was somewhere within our rectangle
     LLMenuItemGL *item = getHighlightedItem();
@@ -4357,13 +4357,13 @@ BOOL LLContextMenu::handleRightMouseDown(S32 x, S32 y, MASK mask)
     S32 local_x = x - getRect().mLeft;
     S32 local_y = y - getRect().mBottom;
 
-    BOOL clicked_in_menu = pointInView(local_x, local_y) ;
+    bool clicked_in_menu = pointInView(local_x, local_y) ;
 
     // grab mouse if right clicking anywhere within pie (even deadzone in middle), to detect drag outside of pie
     if (clicked_in_menu)
     {
         // capture mouse cursor as if on initial menu show
-        handled = TRUE;
+        handled = true;
     }
 
     if (item)
@@ -4372,14 +4372,14 @@ BOOL LLContextMenu::handleRightMouseDown(S32 x, S32 y, MASK mask)
         // to make sure it's within the item's rectangle
         if (item->handleMouseDown( 0, 0, mask ))
         {
-            handled = TRUE;
+            handled = true;
         }
     }
 
     return handled;
 }
 
-BOOL LLContextMenu::handleRightMouseUp( S32 x, S32 y, MASK mask )
+bool LLContextMenu::handleRightMouseUp( S32 x, S32 y, MASK mask )
 {
     S32 local_x = x - getRect().mLeft;
     S32 local_y = y - getRect().mBottom;
@@ -4387,12 +4387,12 @@ BOOL LLContextMenu::handleRightMouseUp( S32 x, S32 y, MASK mask )
     if (!mHoveredAnyItem && !pointInView(local_x, local_y))
     {
         sMenuContainer->hideMenus();
-        return TRUE;
+        return true;
     }
 
 
-    BOOL result = handleMouseUp( x, y, mask );
-    mHoveredAnyItem = FALSE;
+    bool result = handleMouseUp( x, y, mask );
+    mHoveredAnyItem = false;
 
     return result;
 }
diff --git a/indra/llui/llmenugl.h b/indra/llui/llmenugl.h
index 72e041672a..51766afe85 100644
--- a/indra/llui/llmenugl.h
+++ b/indra/llui/llmenugl.h
@@ -89,17 +89,17 @@ protected:
     friend class LLUICtrlFactory;
 public:
     // LLView overrides
-    /*virtual*/ void onVisibilityChange(BOOL new_visibility);
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleRightMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ void onVisibilityChange(bool new_visibility);
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleRightMouseUp(S32 x, S32 y, MASK mask);
 
     // LLUICtrl overrides
     /*virtual*/ void setValue(const LLSD& value);
     /*virtual*/ LLSD getValue() const;
 
     virtual bool hasAccelerator(const KEY &key, const MASK &mask) const;
-    virtual BOOL handleAcceleratorKey(KEY key, MASK mask);
+    virtual bool handleAcceleratorKey(KEY key, MASK mask);
 
     LLColor4 getHighlightBgColor() { return mHighlightBackground.get(); }
 
@@ -114,17 +114,17 @@ public:
     virtual U32 getNominalHeight( void ) const;
 
     // Marks item as not needing space for check marks or accelerator keys
-    virtual void setBriefItem(BOOL brief);
-    virtual BOOL isBriefItem() const;
+    virtual void setBriefItem(bool brief);
+    virtual bool isBriefItem() const;
 
-    virtual BOOL addToAcceleratorList(std::list<LLMenuKeyboardBinding*> *listp);
-    void setAllowKeyRepeat(BOOL allow) { mAllowKeyRepeat = allow; }
-    BOOL getAllowKeyRepeat() const { return mAllowKeyRepeat; }
+    virtual bool addToAcceleratorList(std::list<LLMenuKeyboardBinding*> *listp);
+    void setAllowKeyRepeat(bool allow) { mAllowKeyRepeat = allow; }
+    bool getAllowKeyRepeat() const { return mAllowKeyRepeat; }
 
     // change the label
     void setLabel( const LLStringExplicit& label ) { mLabel = label; }
     std::string getLabel( void ) const { return mLabel.getString(); }
-    virtual BOOL setLabelArg( const std::string& key, const LLStringExplicit& text );
+    virtual bool setLabelArg( const std::string& key, const LLStringExplicit& text );
 
     // Get the parent menu for this item
     virtual class LLMenuGL* getMenu() const;
@@ -150,35 +150,35 @@ public:
 
     virtual void onCommit( void );
 
-    virtual void setHighlight( BOOL highlight );
-    virtual BOOL getHighlight() const { return mHighlight; }
+    virtual void setHighlight( bool highlight );
+    virtual bool getHighlight() const { return mHighlight; }
 
     // determine if this represents an active sub-menu
-    virtual BOOL isActive( void ) const { return FALSE; }
+    virtual bool isActive( void ) const { return false; }
 
     // determine if this represents an open sub-menu
-    virtual BOOL isOpen( void ) const { return FALSE; }
+    virtual bool isOpen( void ) const { return false; }
 
-    virtual void setEnabledSubMenus(BOOL enable){};
+    virtual void setEnabledSubMenus(bool enable){};
 
     // LLView Functionality
-    virtual BOOL handleKeyHere( KEY key, MASK mask );
-    virtual BOOL handleMouseDown( S32 x, S32 y, MASK mask );
-    virtual BOOL handleMouseUp( S32 x, S32 y, MASK mask );
-    virtual BOOL handleScrollWheel( S32 x, S32 y, S32 clicks );
+    virtual bool handleKeyHere( KEY key, MASK mask );
+    virtual bool handleMouseDown( S32 x, S32 y, MASK mask );
+    virtual bool handleMouseUp( S32 x, S32 y, MASK mask );
+    virtual bool handleScrollWheel( S32 x, S32 y, S32 clicks );
 
     virtual void    onMouseEnter(S32 x, S32 y, MASK mask);
     virtual void    onMouseLeave(S32 x, S32 y, MASK mask);
 
     virtual void draw( void );
 
-    BOOL getHover() const { return mGotHover; }
+    bool getHover() const { return mGotHover; }
 
-    void setDrawTextDisabled(BOOL disabled) { mDrawTextDisabled = disabled; }
-    BOOL getDrawTextDisabled() const { return mDrawTextDisabled; }
+    void setDrawTextDisabled(bool disabled) { mDrawTextDisabled = disabled; }
+    bool getDrawTextDisabled() const { return mDrawTextDisabled; }
 
 protected:
-    void setHover(BOOL hover) { mGotHover = hover; }
+    void setHover(bool hover) { mGotHover = hover; }
 
     // This function appends the character string representation of
     // the current accelerator key and mask to the provided string.
@@ -207,19 +207,19 @@ protected:
     LLUIColor mHighlightBackground;
     LLUIColor mHighlightForeground;
 
-    BOOL mHighlight;
+    bool mHighlight;
 private:
     // Keyboard and mouse variables
-    BOOL mAllowKeyRepeat;
-    BOOL mGotHover;
+    bool mAllowKeyRepeat;
+    bool mGotHover;
 
     // If true, suppress normal space for check marks on the left and accelerator
     // keys on the right.
-    BOOL mBriefItem;
+    bool mBriefItem;
 
     // Font for this item
     const LLFontGL* mFont;
-    BOOL mDrawTextDisabled;
+    bool mDrawTextDisabled;
 
     KEY mJumpKey;
 };
@@ -241,9 +241,9 @@ public:
     LLMenuItemSeparatorGL(const LLMenuItemSeparatorGL::Params& p = LLMenuItemSeparatorGL::Params());
 
     /*virtual*/ void draw( void );
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
 
     virtual void buildDrawLabel();
 
@@ -288,8 +288,8 @@ public:
 
     virtual void onCommit( void );
 
-    virtual BOOL handleAcceleratorKey(KEY key, MASK mask);
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool handleAcceleratorKey(KEY key, MASK mask);
+    virtual bool handleKeyHere(KEY key, MASK mask);
 
     //virtual void draw();
 
@@ -442,23 +442,23 @@ public:
     void parseChildXML(LLXMLNodePtr child, LLView* parent);
 
     // LLView Functionality
-    /*virtual*/ BOOL handleUnicodeCharHere( llwchar uni_char );
-    /*virtual*/ BOOL handleHover( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL handleScrollWheel( S32 x, S32 y, S32 clicks );
+    /*virtual*/ bool handleUnicodeCharHere( llwchar uni_char );
+    /*virtual*/ bool handleHover( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleScrollWheel( S32 x, S32 y, S32 clicks );
     /*virtual*/ void draw( void );
     /*virtual*/ void drawBackground(LLMenuItemGL* itemp, F32 alpha);
-    /*virtual*/ void setVisible(BOOL visible);
+    /*virtual*/ void setVisible(bool visible);
     /*virtual*/ bool addChild(LLView* view, S32 tab_group = 0);
     /*virtual*/ void deleteAllChildren();
     /*virtual*/ void removeChild( LLView* ctrl);
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     virtual bool hasAccelerator(const KEY &key, const MASK &mask) const;
-    virtual BOOL handleAcceleratorKey(KEY key, MASK mask);
+    virtual bool handleAcceleratorKey(KEY key, MASK mask);
 
-    LLMenuGL* findChildMenuByName(const std::string& name, BOOL recurse) const;
+    LLMenuGL* findChildMenuByName(const std::string& name, bool recurse) const;
 
-    BOOL clearHoverItem();
+    bool clearHoverItem();
 
     // return the name label
     const std::string& getLabel( void ) const { return mLabel.getString(); }
@@ -467,37 +467,37 @@ public:
     // background colors
     void setBackgroundColor( const LLUIColor& color ) { mBackgroundColor = color; }
     const LLUIColor& getBackgroundColor() const { return mBackgroundColor; }
-    void setBackgroundVisible( BOOL b ) { mBgVisible = b; }
-    void setCanTearOff(BOOL tear_off);
+    void setBackgroundVisible( bool b ) { mBgVisible = b; }
+    void setCanTearOff(bool tear_off);
 
     // add a separator to this menu
-    virtual BOOL addSeparator();
+    virtual bool addSeparator();
 
     // for branching menu items, bring sub menus up to root level of menu hierarchy
     virtual void updateParent( LLView* parentp );
 
     // setItemEnabled() - pass the name and the enable flag for a
-    // menu item. TRUE will make sure it's enabled, FALSE will disable
+    // menu item. true will make sure it's enabled, false will disable
     // it.
-    void setItemEnabled( const std::string& name, BOOL enable );
+    void setItemEnabled( const std::string& name, bool enable );
 
     // propagate message to submenus
-    void setEnabledSubMenus(BOOL enable);
+    void setEnabledSubMenus(bool enable);
 
-    void setItemVisible( const std::string& name, BOOL visible);
+    void setItemVisible( const std::string& name, bool visible);
 
     void setItemLabel(const std::string &name, const std::string &label);
 
     // sets the left,bottom corner of menu, useful for popups
     void setLeftAndBottom(S32 left, S32 bottom);
 
-    virtual BOOL handleJumpKey(KEY key);
+    virtual bool handleJumpKey(KEY key);
 
-    virtual BOOL jumpKeysActive();
+    virtual bool jumpKeysActive();
 
-    virtual BOOL isOpen();
+    virtual bool isOpen();
 
-    void needsArrange() { mNeedsArrange = TRUE; }
+    void needsArrange() { mNeedsArrange = true; }
     // Shape this menu to fit the current state of the children, and
     // adjust the child rects to fit. This is called automatically
     // when you add items. *FIX: We may need to deal with visibility
@@ -520,8 +520,8 @@ public:
     LLMenuItemGL*   getItem(std::string name);
     LLMenuItemGL*   getHighlightedItem();
 
-    LLMenuItemGL*   highlightNextItem(LLMenuItemGL* cur_item, BOOL skip_disabled = TRUE);
-    LLMenuItemGL*   highlightPrevItem(LLMenuItemGL* cur_item, BOOL skip_disabled = TRUE);
+    LLMenuItemGL*   highlightNextItem(LLMenuItemGL* cur_item, bool skip_disabled = true);
+    LLMenuItemGL*   highlightPrevItem(LLMenuItemGL* cur_item, bool skip_disabled = true);
 
     void buildDrawLabels();
     void createJumpKeys();
@@ -530,37 +530,37 @@ public:
     static void showPopup(LLView* spawning_view, LLMenuGL* menu, S32 x, S32 y, S32 mouse_x = 0, S32 mouse_y = 0);
 
     // Whether to drop shadow menu bar
-    void setDropShadowed( const BOOL shadowed );
+    void setDropShadowed( const bool shadowed );
 
     void setParentMenuItem( LLMenuItemGL* parent_menu_item ) { mParentMenuItem = parent_menu_item->getHandle(); }
     LLMenuItemGL* getParentMenuItem() const { return dynamic_cast<LLMenuItemGL*>(mParentMenuItem.get()); }
 
-    void setTornOff(BOOL torn_off);
-    BOOL getTornOff() { return mTornOff; }
+    void setTornOff(bool torn_off);
+    bool getTornOff() { return mTornOff; }
 
-    BOOL getCanTearOff() { return mTearOffItem != NULL; }
+    bool getCanTearOff() { return mTearOffItem != NULL; }
 
     KEY getJumpKey() const { return mJumpKey; }
     void setJumpKey(KEY key) { mJumpKey = key; }
 
-    static void setKeyboardMode(BOOL mode) { sKeyboardMode = mode; }
-    static BOOL getKeyboardMode() { return sKeyboardMode; }
+    static void setKeyboardMode(bool mode) { sKeyboardMode = mode; }
+    static bool getKeyboardMode() { return sKeyboardMode; }
 
     S32 getShortcutPad() { return mShortcutPad; }
 
     bool scrollItems(EScrollingDirection direction);
-    BOOL isScrollable() const { return mScrollable; }
+    bool isScrollable() const { return mScrollable; }
 
     static class LLMenuHolderGL* sMenuContainer;
 
     void resetScrollPositionOnShow(bool reset_scroll_pos) { mResetScrollPositionOnShow = reset_scroll_pos; }
     bool isScrollPositionOnShowReset() { return mResetScrollPositionOnShow; }
 
-    void setAlwaysShowMenu(BOOL show) { mAlwaysShowMenu = show; }
-    BOOL getAlwaysShowMenu() { return mAlwaysShowMenu; }
+    void setAlwaysShowMenu(bool show) { mAlwaysShowMenu = show; }
+    bool getAlwaysShowMenu() { return mAlwaysShowMenu; }
 
     // add a context menu branch
-    BOOL appendContextSubMenu(LLMenuGL *menu);
+    bool appendContextSubMenu(LLMenuGL *menu);
 
     const LLFontGL *getFont() const { return mFont; }
 
@@ -568,10 +568,10 @@ public:
     void createSpilloverBranch();
     void cleanupSpilloverBranch();
     // Add the menu item to this menu.
-    virtual BOOL append( LLMenuItemGL* item );
+    virtual bool append( LLMenuItemGL* item );
 
     // add a menu - this will create a cascading menu
-    virtual BOOL appendMenu( LLMenuGL* menu );
+    virtual bool appendMenu( LLMenuGL* menu );
 
     // Used in LLContextMenu and in LLTogleableMenu
     // to add an item of context menu branch
@@ -591,10 +591,10 @@ public:
     S32             mMouseVelY;
     U32             mMaxScrollableItems;
     U32             mPreferredWidth;
-    BOOL            mHorizontalLayout;
-    BOOL            mScrollable;
-    BOOL            mKeepFixedSize;
-    BOOL            mNeedsArrange;
+    bool            mHorizontalLayout;
+    bool            mScrollable;
+    bool            mKeepFixedSize;
+    bool            mNeedsArrange;
 
     // Font for top menu items only
     const LLFontGL* mFont;
@@ -603,24 +603,24 @@ private:
 
 
     static LLColor4 sDefaultBackgroundColor;
-    static BOOL     sKeyboardMode;
+    static bool     sKeyboardMode;
 
-    BOOL            mAlwaysShowMenu;
+    bool            mAlwaysShowMenu;
 
     LLUIColor       mBackgroundColor;
-    BOOL            mBgVisible;
+    bool            mBgVisible;
     LLHandle<LLView> mParentMenuItem;
     LLUIString      mLabel;
-    BOOL mDropShadowed;     //  Whether to drop shadow
+    bool mDropShadowed;     //  Whether to drop shadow
     bool            mHasSelection;
     LLFrameTimer    mFadeTimer;
     LLTimer         mScrollItemsTimer;
-    BOOL            mTornOff;
+    bool            mTornOff;
     class LLMenuItemTearOffGL* mTearOffItem;
     class LLMenuItemBranchGL* mSpilloverBranch;
     LLMenuGL*       mSpilloverMenu;
     KEY             mJumpKey;
-    BOOL            mCreateJumpKeys;
+    bool            mCreateJumpKeys;
     S32             mShortcutPad;
     bool            mResetScrollPositionOnShow;
 }; // end class LLMenuGL
@@ -648,47 +648,47 @@ protected:
 public:
     virtual ~LLMenuItemBranchGL();
 
-    virtual BOOL handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseUp(S32 x, S32 y, MASK mask);
 
     virtual bool hasAccelerator(const KEY &key, const MASK &mask) const;
-    virtual BOOL handleAcceleratorKey(KEY key, MASK mask);
+    virtual bool handleAcceleratorKey(KEY key, MASK mask);
 
     // check if we've used these accelerators already
-    virtual BOOL addToAcceleratorList(std::list <LLMenuKeyboardBinding*> *listp);
+    virtual bool addToAcceleratorList(std::list <LLMenuKeyboardBinding*> *listp);
 
     // called to rebuild the draw label
     virtual void buildDrawLabel( void );
 
     virtual void onCommit( void );
 
-    virtual BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent);
-    virtual BOOL handleUnicodeChar(llwchar uni_char, BOOL called_from_parent);
+    virtual bool handleKey(KEY key, MASK mask, bool called_from_parent);
+    virtual bool handleUnicodeChar(llwchar uni_char, bool called_from_parent);
 
     // set the hover status (called by it's menu) and if the object is
     // active. This is used for behavior transfer.
-    virtual void setHighlight( BOOL highlight );
+    virtual void setHighlight( bool highlight );
 
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool handleKeyHere(KEY key, MASK mask);
 
-    virtual BOOL isActive() const;
+    virtual bool isActive() const;
 
-    virtual BOOL isOpen() const;
+    virtual bool isOpen() const;
 
     LLMenuGL* getBranch() const { return (LLMenuGL*)mBranchHandle.get(); }
 
     virtual void updateBranchParent( LLView* parentp );
 
     // LLView Functionality
-    virtual void onVisibilityChange( BOOL curVisibilityIn );
+    virtual void onVisibilityChange( bool curVisibilityIn );
 
     virtual void draw();
 
-    virtual void setEnabledSubMenus(BOOL enabled) { if (getBranch()) getBranch()->setEnabledSubMenus(enabled); }
+    virtual void setEnabledSubMenus(bool enabled) { if (getBranch()) getBranch()->setEnabledSubMenus(enabled); }
 
     virtual void openMenu();
 
-    virtual LLView* getChildView(const std::string& name, BOOL recurse = TRUE) const;
-    virtual LLView* findChildView(const std::string& name, BOOL recurse = TRUE) const;
+    virtual LLView* getChildView(const std::string& name, bool recurse = true) const;
+    virtual LLView* findChildView(const std::string& name, bool recurse = true) const;
 
 private:
     LLHandle<LLView> mBranchHandle;
@@ -721,14 +721,14 @@ public:
 
     // LLView Functionality
     // can't set visibility directly, must call show or hide
-    virtual void    setVisible          (BOOL visible);
+    virtual void    setVisible          (bool visible);
 
     virtual void    show                (S32 x, S32 y, LLView* spawning_view = NULL);
     virtual void    hide                ();
 
-    virtual BOOL    handleHover         ( S32 x, S32 y, MASK mask );
-    virtual BOOL    handleRightMouseDown( S32 x, S32 y, MASK mask );
-    virtual BOOL    handleRightMouseUp  ( S32 x, S32 y, MASK mask );
+    virtual bool    handleHover         ( S32 x, S32 y, MASK mask );
+    virtual bool    handleRightMouseDown( S32 x, S32 y, MASK mask );
+    virtual bool    handleRightMouseUp  ( S32 x, S32 y, MASK mask );
 
     virtual bool    addChild            (LLView* view, S32 tab_group = 0);
 
@@ -738,7 +738,7 @@ public:
             void    setSpawningView(LLHandle<LLView> spawning_view) { mSpawningViewHandle = spawning_view; }
 
 protected:
-    BOOL                        mHoveredAnyItem;
+    bool                        mHoveredAnyItem;
     LLMenuItemGL*               mHoverItem;
     LLRootHandle<LLContextMenu> mHandle;
     LLHandle<LLView>            mSpawningViewHandle;
@@ -767,7 +767,7 @@ public:
     virtual void    onCommit( void );
 
     LLContextMenu*  getBranch() { return mBranch.get(); }
-    void            setHighlight( BOOL highlight );
+    void            setHighlight( bool highlight );
 
 protected:
     void    showSubMenu();
@@ -790,29 +790,29 @@ public:
     LLMenuBarGL( const Params& p );
     virtual ~LLMenuBarGL();
 
-    /*virtual*/ BOOL handleAcceleratorKey(KEY key, MASK mask);
-    /*virtual*/ BOOL handleKeyHere(KEY key, MASK mask);
-    /*virtual*/ BOOL handleJumpKey(KEY key);
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleAcceleratorKey(KEY key, MASK mask);
+    /*virtual*/ bool handleKeyHere(KEY key, MASK mask);
+    /*virtual*/ bool handleJumpKey(KEY key);
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleDoubleClick(S32 x, S32 y, MASK mask);
 
     /*virtual*/ void draw();
-    /*virtual*/ BOOL jumpKeysActive();
+    /*virtual*/ bool jumpKeysActive();
 
     // add a vertical separator to this menu
-    virtual BOOL addSeparator();
+    virtual bool addSeparator();
 
     // LLView Functionality
-    virtual BOOL handleHover( S32 x, S32 y, MASK mask );
+    virtual bool handleHover( S32 x, S32 y, MASK mask );
 
     // Returns x position of rightmost child, usually Help menu
     S32 getRightmostMenuEdge();
 
-    void resetMenuTrigger() { mAltKeyTrigger = FALSE; }
+    void resetMenuTrigger() { mAltKeyTrigger = false; }
 
 private:
     // add a menu - this will create a drop down menu.
-    virtual BOOL appendMenu( LLMenuGL* menu );
+    virtual bool appendMenu( LLMenuGL* menu );
     // rearrange the child rects so they fit the shape of the menu
     // bar.
     virtual void arrange( void );
@@ -820,7 +820,7 @@ private:
     void checkMenuTrigger();
 
     std::list <LLMenuKeyboardBinding*>  mAccelerators;
-    BOOL                        mAltKeyTrigger;
+    bool                        mAltKeyTrigger;
 };
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -836,22 +836,22 @@ public:
     LLMenuHolderGL(const Params& p);
     virtual ~LLMenuHolderGL() {}
 
-    virtual BOOL hideMenus();
-    void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
-    void setCanHide(BOOL can_hide) { mCanHide = can_hide; }
+    virtual bool hideMenus();
+    void reshape(S32 width, S32 height, bool called_from_parent = true);
+    void setCanHide(bool can_hide) { mCanHide = can_hide; }
 
     // LLView functionality
     virtual void draw();
-    virtual BOOL handleMouseDown( S32 x, S32 y, MASK mask );
-    virtual BOOL handleRightMouseDown( S32 x, S32 y, MASK mask );
+    virtual bool handleMouseDown( S32 x, S32 y, MASK mask );
+    virtual bool handleRightMouseDown( S32 x, S32 y, MASK mask );
 
     // Close context menus on right mouse up not handled by menus.
-    /*virtual*/ BOOL handleRightMouseUp( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleRightMouseUp( S32 x, S32 y, MASK mask );
 
-    virtual BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent);
+    virtual bool handleKey(KEY key, MASK mask, bool called_from_parent);
     virtual const LLRect getMenuRect() const { return getLocalRect(); }
     LLView*const getVisibleMenu() const;
-    virtual BOOL hasVisibleMenu() const {return getVisibleMenu() != NULL;}
+    virtual bool hasVisibleMenu() const {return getVisibleMenu() != NULL;}
 
     static void setActivatedItem(LLMenuItemGL* item);
 
@@ -863,7 +863,7 @@ private:
     static LLHandle<LLView> sItemLastSelectedHandle;
     static LLFrameTimer sItemActivationTimer;
 
-    BOOL mCanHide;
+    bool mCanHide;
 };
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -881,8 +881,8 @@ public:
     virtual void draw(void);
     virtual void onFocusReceived();
     virtual void onFocusLost();
-    virtual BOOL handleUnicodeChar(llwchar uni_char, BOOL called_from_parent);
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool handleUnicodeChar(llwchar uni_char, bool called_from_parent);
+    virtual bool handleKeyHere(KEY key, MASK mask);
     virtual void translate(S32 x, S32 y);
 
     void updateSize();
diff --git a/indra/llui/llmodaldialog.cpp b/indra/llui/llmodaldialog.cpp
index eac43900f6..c5c31f7252 100644
--- a/indra/llui/llmodaldialog.cpp
+++ b/indra/llui/llmodaldialog.cpp
@@ -38,18 +38,18 @@
 // static
 std::list<LLModalDialog*> LLModalDialog::sModalStack;
 
-LLModalDialog::LLModalDialog( const LLSD& key, BOOL modal )
+LLModalDialog::LLModalDialog( const LLSD& key, bool modal )
     : LLFloater(key),
       mModal( modal )
 {
     if (modal)
     {
-        setCanMinimize(FALSE);
-        setCanClose(FALSE);
+        setCanMinimize(false);
+        setCanClose(false);
     }
-    setVisible( FALSE );
-    setBackgroundVisible(TRUE);
-    setBackgroundOpaque(TRUE);
+    setVisible( false );
+    setBackgroundVisible(true);
+    setBackgroundOpaque(true);
     centerOnScreen(); // default position
     mCloseSignal.connect(boost::bind(&LLModalDialog::stopModal, this));
 }
@@ -72,7 +72,7 @@ LLModalDialog::~LLModalDialog()
 }
 
 // virtual
-BOOL LLModalDialog::postBuild()
+bool LLModalDialog::postBuild()
 {
     return LLFloater::postBuild();
 }
@@ -87,7 +87,7 @@ void LLModalDialog::openFloater(const LLSD& key)
     LLFloater::setFloaterHost(thost);
 }
 
-void LLModalDialog::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLModalDialog::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLFloater::reshape(width, height, called_from_parent);
     centerOnScreen();
@@ -104,14 +104,14 @@ void LLModalDialog::onOpen(const LLSD& key)
             LLModalDialog* front = sModalStack.front();
             if (front != this)
             {
-                front->setVisible(FALSE);
+                front->setVisible(false);
             }
         }
 
         // This is a modal dialog.  It sucks up all mouse and keyboard operations.
         gFocusMgr.setMouseCapture( this );
         LLUI::getInstance()->addPopup(this);
-        setFocus(TRUE);
+        setFocus(true);
 
         std::list<LLModalDialog*>::iterator iter = std::find(sModalStack.begin(), sModalStack.end(), this);
         if (iter != sModalStack.end())
@@ -144,12 +144,12 @@ void LLModalDialog::stopModal()
     if (!sModalStack.empty())
     {
         LLModalDialog* front = sModalStack.front();
-        front->setVisible(TRUE);
+        front->setVisible(true);
     }
 }
 
 
-void LLModalDialog::setVisible( BOOL visible )
+void LLModalDialog::setVisible( bool visible )
 {
     if (mModal)
     {
@@ -160,7 +160,7 @@ void LLModalDialog::setVisible( BOOL visible )
 
             // The dialog view is a root view
             LLUI::getInstance()->addPopup(this);
-            setFocus( TRUE );
+            setFocus( true );
         }
         else
         {
@@ -171,7 +171,7 @@ void LLModalDialog::setVisible( BOOL visible )
     LLFloater::setVisible( visible );
 }
 
-BOOL LLModalDialog::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLModalDialog::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     LLView* popup_menu = LLMenuGL::sMenuContainer->getVisibleMenu();
     if (popup_menu != NULL)
@@ -199,10 +199,10 @@ BOOL LLModalDialog::handleMouseDown(S32 x, S32 y, MASK mask)
     }
 
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLModalDialog::handleHover(S32 x, S32 y, MASK mask)
+bool LLModalDialog::handleHover(S32 x, S32 y, MASK mask)
 {
     if( childrenHandleHover(x, y, mask) == NULL )
     {
@@ -225,60 +225,60 @@ BOOL LLModalDialog::handleHover(S32 x, S32 y, MASK mask)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLModalDialog::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLModalDialog::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     childrenHandleMouseUp(x, y, mask);
-    return TRUE;
+    return true;
 }
 
-BOOL LLModalDialog::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLModalDialog::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     childrenHandleScrollWheel(x, y, clicks);
-    return TRUE;
+    return true;
 }
 
-BOOL LLModalDialog::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLModalDialog::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if (!LLFloater::handleDoubleClick(x, y, mask))
     {
         // Click outside the panel
         make_ui_sound("UISndInvalidOp");
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLModalDialog::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLModalDialog::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     LLMenuGL::sMenuContainer->hideMenus();
     childrenHandleRightMouseDown(x, y, mask);
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLModalDialog::handleKeyHere(KEY key, MASK mask )
+bool LLModalDialog::handleKeyHere(KEY key, MASK mask )
 {
     LLFloater::handleKeyHere(key, mask );
 
     if (mModal)
     {
         // Suck up all keystokes except CTRL-Q.
-        BOOL is_quit = ('Q' == key) && (MASK_CONTROL == mask);
+        bool is_quit = ('Q' == key) && (MASK_CONTROL == mask);
         return !is_quit;
     }
     else
     {
         // don't process escape key until message box has been on screen a minimal amount of time
         // to avoid accidentally destroying the message box when user is hitting escape at the time it appears
-        BOOL enough_time_elapsed = mVisibleTime.getElapsedTimeF32() > 1.0f;
+        bool enough_time_elapsed = mVisibleTime.getElapsedTimeF32() > 1.0f;
         if (enough_time_elapsed && key == KEY_ESCAPE)
         {
             closeFloater();
-            return TRUE;
+            return true;
         }
-        return FALSE;
+        return false;
     }
 }
 
@@ -313,7 +313,7 @@ void LLModalDialog::onAppFocusLost()
             gFocusMgr.setMouseCapture( NULL );
         }
 
-        instance->setFocus(FALSE);
+        instance->setFocus(false);
     }
 }
 
@@ -326,7 +326,7 @@ void LLModalDialog::onAppFocusGained()
 
         // This is a modal dialog.  It sucks up all mouse and keyboard operations.
         gFocusMgr.setMouseCapture( instance );
-        instance->setFocus(TRUE);
+        instance->setFocus(true);
         LLUI::getInstance()->addPopup(instance);
 
         instance->centerOnScreen();
diff --git a/indra/llui/llmodaldialog.h b/indra/llui/llmodaldialog.h
index bf729c61bf..177664dde4 100644
--- a/indra/llui/llmodaldialog.h
+++ b/indra/llui/llmodaldialog.h
@@ -39,34 +39,34 @@ class LLModalDialog;
 class LLModalDialog : public LLFloater
 {
 public:
-    LLModalDialog( const LLSD& key, BOOL modal = true );
+    LLModalDialog( const LLSD& key, bool modal = true );
     virtual     ~LLModalDialog();
 
-    /*virtual*/ BOOL    postBuild();
+    /*virtual*/ bool    postBuild();
 
     /*virtual*/ void    openFloater(const LLSD& key = LLSD());
     /*virtual*/ void    onOpen(const LLSD& key);
 
-    /*virtual*/ void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void    reshape(S32 width, S32 height, bool called_from_parent = true);
 
-    /*virtual*/ BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleScrollWheel(S32 x, S32 y, S32 clicks);
-    /*virtual*/ BOOL    handleDoubleClick(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleKeyHere(KEY key, MASK mask );
+    /*virtual*/ bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleScrollWheel(S32 x, S32 y, S32 clicks);
+    /*virtual*/ bool    handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleKeyHere(KEY key, MASK mask );
 
-    /*virtual*/ void    setVisible(BOOL visible);
+    /*virtual*/ void    setVisible(bool visible);
     /*virtual*/ void    draw();
 
-    BOOL            isModal() const { return mModal; }
+    bool            isModal() const { return mModal; }
     void            stopModal();
 
     static void     onAppFocusLost();
     static void     onAppFocusGained();
 
-    static S32      activeCount() { return sModalStack.size(); }
+    static S32      activeCount() { return static_cast<S32>(sModalStack.size()); }
     static void     shutdownModals();
 
 protected:
@@ -75,7 +75,7 @@ protected:
 private:
 
     LLFrameTimer    mVisibleTime;
-    const BOOL      mModal;
+    const bool      mModal;
 
     static std::list<LLModalDialog*> sModalStack;  // Top of stack is currently being displayed
 };
diff --git a/indra/llui/llmultifloater.cpp b/indra/llui/llmultifloater.cpp
index 17f24a0f87..a7f9b8b2d9 100644
--- a/indra/llui/llmultifloater.cpp
+++ b/indra/llui/llmultifloater.cpp
@@ -40,7 +40,7 @@ LLMultiFloater::LLMultiFloater(const LLSD& key, const LLFloater::Params& params)
     : LLFloater(key),
       mTabContainer(NULL),
       mTabPos(LLTabContainer::TOP),
-      mAutoResize(TRUE),
+      mAutoResize(true),
       mOrigMinWidth(params.min_width),
       mOrigMinHeight(params.min_height)
 {
@@ -71,7 +71,7 @@ void LLMultiFloater::onClose(bool app_quitting)
 {
     if(isMinimized())
     {
-        setMinimized(FALSE);
+        setMinimized(false);
     }
     LLFloater::onClose(app_quitting);
 }
@@ -89,7 +89,7 @@ void LLMultiFloater::draw()
     }
 }
 
-BOOL LLMultiFloater::closeAllFloaters()
+bool LLMultiFloater::closeAllFloaters()
 {
     S32 tabToClose = 0;
     S32 lastTabCount = mTabContainer->getTabCount();
@@ -110,8 +110,8 @@ BOOL LLMultiFloater::closeAllFloaters()
         }
     }
     if( mTabContainer->getTabCount() != 0 )
-        return FALSE; // Couldn't close all the tabs (pending save dialog?) so return FALSE.
-    return TRUE; //else all tabs were successfully closed...
+        return false; // Couldn't close all the tabs (pending save dialog?) so return false.
+    return true; //else all tabs were successfully closed...
 }
 
 void LLMultiFloater::growToFit(S32 content_width, S32 content_height)
@@ -139,7 +139,7 @@ void LLMultiFloater::growToFit(S32 content_width, S32 content_height)
 }
 
 /**
-  void addFloater(LLFloater* floaterp, BOOL select_added_floater)
+  void addFloater(LLFloater* floaterp, bool select_added_floater)
 
   Adds the LLFloater pointed to by floaterp to this.
   If floaterp is already hosted by this, then it is re-added to get
@@ -149,7 +149,7 @@ void LLMultiFloater::growToFit(S32 content_width, S32 content_height)
 
   Affects: mTabContainer, floaterp
 **/
-void LLMultiFloater::addFloater(LLFloater* floaterp, BOOL select_added_floater, LLTabContainer::eInsertionPoint insertion_point)
+void LLMultiFloater::addFloater(LLFloater* floaterp, bool select_added_floater, LLTabContainer::eInsertionPoint insertion_point)
 {
     if (!floaterp)
     {
@@ -190,13 +190,13 @@ void LLMultiFloater::addFloater(LLFloater* floaterp, BOOL select_added_floater,
     floater_data.mSaveRect = floaterp->mSaveRect;
 
     // remove minimize and close buttons
-    floaterp->setCanMinimize(FALSE);
-    floaterp->setCanResize(FALSE);
-    floaterp->setCanDrag(FALSE);
-    floaterp->mSaveRect = FALSE;
+    floaterp->setCanMinimize(false);
+    floaterp->setCanResize(false);
+    floaterp->setCanDrag(false);
+    floaterp->mSaveRect = false;
     floaterp->storeRectControl();
     // avoid double rendering of floater background (makes it more opaque)
-    floaterp->setBackgroundVisible(FALSE);
+    floaterp->setBackgroundVisible(false);
 
     if (mAutoResize)
     {
@@ -226,7 +226,7 @@ void LLMultiFloater::addFloater(LLFloater* floaterp, BOOL select_added_floater,
     floaterp->setHost(this);
     if (isMinimized())
     {
-        floaterp->setVisible(FALSE);
+        floaterp->setVisible(false);
     }
 
     // Tabs sometimes overlap resize handle
@@ -244,14 +244,14 @@ void LLMultiFloater::updateFloaterTitle(LLFloater* floaterp)
 
 
 /**
-    BOOL selectFloater(LLFloater* floaterp)
+    bool selectFloater(LLFloater* floaterp)
 
     If the LLFloater pointed to by floaterp is hosted by this,
     then its tab is selected and returns true.  Otherwise returns false.
 
     Affects: mTabContainer
 **/
-BOOL LLMultiFloater::selectFloater(LLFloater* floaterp)
+bool LLMultiFloater::selectFloater(LLFloater* floaterp)
 {
     return mTabContainer->selectTabPanel(floaterp);
 }
@@ -278,7 +278,7 @@ void LLMultiFloater::showFloater(LLFloater* floaterp, LLTabContainer::eInsertion
     if (floaterp != mTabContainer->getCurrentPanel() &&
         !mTabContainer->selectTabPanel(floaterp))
     {
-        addFloater(floaterp, TRUE, insertion_point);
+        addFloater(floaterp, true, insertion_point);
     }
 }
 
@@ -302,8 +302,8 @@ void LLMultiFloater::removeFloater(LLFloater* floaterp)
         mFloaterDataMap.erase(found_data_it);
     }
     mTabContainer->removeTabPanel(floaterp);
-    floaterp->setBackgroundVisible(TRUE);
-    floaterp->setCanDrag(TRUE);
+    floaterp->setBackgroundVisible(true);
+    floaterp->setCanDrag(true);
     floaterp->setHost(NULL);
     floaterp->applyRectControl();
 
@@ -326,7 +326,7 @@ void LLMultiFloater::tabClose()
     }
 }
 
-void LLMultiFloater::setVisible(BOOL visible)
+void LLMultiFloater::setVisible(bool visible)
 {
     // *FIX: shouldn't have to do this, fix adding to minimized multifloater
     LLFloater::setVisible(visible);
@@ -349,7 +349,7 @@ void LLMultiFloater::setVisible(BOOL visible)
     }
 }
 
-BOOL LLMultiFloater::handleKeyHere(KEY key, MASK mask)
+bool LLMultiFloater::handleKeyHere(KEY key, MASK mask)
 {
     if (key == 'W' && mask == MASK_CONTROL)
     {
@@ -363,10 +363,10 @@ BOOL LLMultiFloater::handleKeyHere(KEY key, MASK mask)
             // bring back focus on tab container if there are any tab left
             if(mTabContainer->getTabCount() > 0)
             {
-                mTabContainer->setFocus(TRUE);
+                mTabContainer->setFocus(true);
             }
         }
-        return TRUE;
+        return true;
     }
 
     return LLFloater::handleKeyHere(key, mask);
@@ -396,7 +396,7 @@ S32 LLMultiFloater::getFloaterCount()
 }
 
 /**
-    BOOL isFloaterFlashing(LLFloater* floaterp)
+    bool isFloaterFlashing(LLFloater* floaterp)
 
     Returns true if the LLFloater pointed to by floaterp
     is currently in a flashing state and is hosted by this.
@@ -404,24 +404,24 @@ S32 LLMultiFloater::getFloaterCount()
 
     Requires: floaterp != NULL
 **/
-BOOL LLMultiFloater::isFloaterFlashing(LLFloater* floaterp)
+bool LLMultiFloater::isFloaterFlashing(LLFloater* floaterp)
 {
     if ( floaterp && floaterp->getHost() == this )
         return mTabContainer->getTabPanelFlashing(floaterp);
 
-    return FALSE;
+    return false;
 }
 
 /**
-    BOOL setFloaterFlashing(LLFloater* floaterp, BOOL flashing)
+    bool setFloaterFlashing(LLFloater* floaterp, bool flashing)
 
     Sets the current flashing state of the LLFloater pointed
-    to by floaterp to be the BOOL flashing if the LLFloater pointed
+    to by floaterp to be the bool flashing if the LLFloater pointed
     to by floaterp is hosted by this.
 
     Requires: floaterp != NULL
 **/
-void LLMultiFloater::setFloaterFlashing(LLFloater* floaterp, BOOL flashing)
+void LLMultiFloater::setFloaterFlashing(LLFloater* floaterp, bool flashing)
 {
     if ( floaterp && floaterp->getHost() == this )
         mTabContainer->setTabPanelFlashing(floaterp, flashing);
@@ -436,7 +436,7 @@ void LLMultiFloater::onTabSelected()
     }
 }
 
-void LLMultiFloater::setCanResize(BOOL can_resize)
+void LLMultiFloater::setCanResize(bool can_resize)
 {
     LLFloater::setCanResize(can_resize);
     if (!mTabContainer) return;
@@ -450,7 +450,7 @@ void LLMultiFloater::setCanResize(BOOL can_resize)
     }
 }
 
-BOOL LLMultiFloater::postBuild()
+bool LLMultiFloater::postBuild()
 {
     mCloseSignal.connect(boost::bind(&LLMultiFloater::closeAllFloaters, this));
 
@@ -459,13 +459,13 @@ BOOL LLMultiFloater::postBuild()
 
     if (mTabContainer)
     {
-        return TRUE;
+        return true;
     }
 
     mTabContainer = getChild<LLTabContainer>("Preview Tabs");
 
     setCanResize(mResizable);
-    return TRUE;
+    return true;
 }
 
 void LLMultiFloater::updateResizeLimits()
@@ -498,7 +498,7 @@ void LLMultiFloater::updateResizeLimits()
 
         // make sure this window is visible on screen when it has been modified
         // (tab added, etc)
-        gFloaterView->adjustToFitScreen(this, TRUE);
+        gFloaterView->adjustToFitScreen(this, true);
     }
 }
 
diff --git a/indra/llui/llmultifloater.h b/indra/llui/llmultifloater.h
index f2d83f4449..eb0f917695 100644
--- a/indra/llui/llmultifloater.h
+++ b/indra/llui/llmultifloater.h
@@ -43,16 +43,16 @@ public:
 
     void buildTabContainer();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     /*virtual*/ void onClose(bool app_quitting);
     virtual void draw();
-    virtual void setVisible(BOOL visible);
-    /*virtual*/ BOOL handleKeyHere(KEY key, MASK mask);
+    virtual void setVisible(bool visible);
+    /*virtual*/ bool handleKeyHere(KEY key, MASK mask);
     /*virtual*/ bool addChild(LLView* view, S32 tab_group = 0);
 
-    virtual void setCanResize(BOOL can_resize);
+    virtual void setCanResize(bool can_resize);
     virtual void growToFit(S32 content_width, S32 content_height);
-    virtual void addFloater(LLFloater* floaterp, BOOL select_added_floater, LLTabContainer::eInsertionPoint insertion_point = LLTabContainer::END);
+    virtual void addFloater(LLFloater* floaterp, bool select_added_floater, LLTabContainer::eInsertionPoint insertion_point = LLTabContainer::END);
 
     virtual void showFloater(LLFloater* floaterp, LLTabContainer::eInsertionPoint insertion_point = LLTabContainer::END);
     virtual void removeFloater(LLFloater* floaterp);
@@ -60,16 +60,16 @@ public:
     virtual void tabOpen(LLFloater* opened_floater, bool from_click);
     virtual void tabClose();
 
-    virtual BOOL selectFloater(LLFloater* floaterp);
+    virtual bool selectFloater(LLFloater* floaterp);
     virtual void selectNextFloater();
     virtual void selectPrevFloater();
 
     virtual LLFloater*  getActiveFloater();
-    virtual BOOL        isFloaterFlashing(LLFloater* floaterp);
+    virtual bool        isFloaterFlashing(LLFloater* floaterp);
     virtual S32         getFloaterCount();
 
-    virtual void setFloaterFlashing(LLFloater* floaterp, BOOL flashing);
-    virtual BOOL closeAllFloaters();    //Returns FALSE if the floater could not be closed due to pending confirmation dialogs
+    virtual void setFloaterFlashing(LLFloater* floaterp, bool flashing);
+    virtual bool closeAllFloaters();    //Returns false if the floater could not be closed due to pending confirmation dialogs
     void setTabContainer(LLTabContainer* tab_container) { if (!mTabContainer) mTabContainer = tab_container; }
     void onTabSelected();
 
@@ -81,9 +81,9 @@ protected:
     {
         S32         mWidth;
         S32         mHeight;
-        BOOL        mCanMinimize;
-        BOOL        mCanResize;
-        BOOL        mSaveRect;
+        bool        mCanMinimize;
+        bool        mCanResize;
+        bool        mSaveRect;
     };
 
     LLTabContainer*     mTabContainer;
@@ -92,7 +92,7 @@ protected:
     floater_data_map_t  mFloaterDataMap;
 
     LLTabContainer::TabPosition mTabPos;
-    BOOL                mAutoResize;
+    bool                mAutoResize;
     S32                 mOrigMinWidth, mOrigMinHeight;  // logically const but initialized late
 
 private:
diff --git a/indra/llui/llmultislider.cpp b/indra/llui/llmultislider.cpp
index 26882ba8ec..cfbf491610 100644
--- a/indra/llui/llmultislider.cpp
+++ b/indra/llui/llmultislider.cpp
@@ -161,7 +161,7 @@ F32 LLMultiSlider::getNearestIncrement(F32 value) const
     return mMinValue + value;
 }
 
-void LLMultiSlider::setSliderValue(const std::string& name, F32 value, BOOL from_event)
+void LLMultiSlider::setSliderValue(const std::string& name, F32 value, bool from_event)
 {
     // exit if not there
     if(!mValue.has(name)) {
@@ -263,7 +263,7 @@ void LLMultiSlider::setValue(const LLSD& value)
         mCurSlider = mIt->first;
 
         for(; mIt != value.endMap(); mIt++) {
-            setSliderValue(mIt->first, (F32)mIt->second.asReal(), TRUE);
+            setSliderValue(mIt->first, (F32)mIt->second.asReal(), true);
         }
     }
 }
@@ -378,7 +378,7 @@ const std::string& LLMultiSlider::addSlider(F32 val)
     mCurSlider = newName.str();
 
     // move the slider
-    setSliderValue(mCurSlider, initVal, TRUE);
+    setSliderValue(mCurSlider, initVal, true);
 
     return mCurSlider;
 }
@@ -411,7 +411,7 @@ bool LLMultiSlider::addSlider(F32 val, const std::string& name)
     mCurSlider = name;
 
     // move the slider
-    setSliderValue(mCurSlider, initVal, TRUE);
+    setSliderValue(mCurSlider, initVal, true);
 
     return true;
 }
@@ -498,7 +498,7 @@ void LLMultiSlider::clear()
     LLF32UICtrl::clear();
 }
 
-BOOL LLMultiSlider::handleHover(S32 x, S32 y, MASK mask)
+bool LLMultiSlider::handleHover(S32 x, S32 y, MASK mask)
 {
     if( gFocusMgr.getMouseCapture() == this )
     {
@@ -531,12 +531,12 @@ BOOL LLMultiSlider::handleHover(S32 x, S32 y, MASK mask)
         getWindow()->setCursor(UI_CURSOR_ARROW);
         LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (inactive)" << LL_ENDL;
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLMultiSlider::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLMultiSlider::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if( gFocusMgr.getMouseCapture() == this )
     {
@@ -545,23 +545,23 @@ BOOL LLMultiSlider::handleMouseUp(S32 x, S32 y, MASK mask)
         if (mMouseUpSignal)
             (*mMouseUpSignal)( this, LLSD() );
 
-        handled = TRUE;
+        handled = true;
         make_ui_sound("UISndClickRelease");
     }
     else
     {
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
 }
 
-BOOL LLMultiSlider::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLMultiSlider::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // only do sticky-focus on non-chrome widgets
     if (!getIsChrome())
     {
-        setFocus(TRUE);
+        setFocus(true);
     }
     if (mMouseDownSignal)
         (*mMouseDownSignal)( this, LLSD() );
@@ -611,28 +611,28 @@ BOOL LLMultiSlider::handleMouseDown(S32 x, S32 y, MASK mask)
     }
     make_ui_sound("UISndClick");
 
-    return TRUE;
+    return true;
 }
 
-BOOL    LLMultiSlider::handleKeyHere(KEY key, MASK mask)
+bool    LLMultiSlider::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     switch(key)
     {
     case KEY_UP:
     case KEY_DOWN:
         // eat up and down keys to be consistent
-        handled = TRUE;
+        handled = true;
         break;
     case KEY_LEFT:
         setCurSliderValue(getCurSliderValue() - getIncrement());
         onCommit();
-        handled = TRUE;
+        handled = true;
         break;
     case KEY_RIGHT:
         setCurSliderValue(getCurSliderValue() + getIncrement());
         onCommit();
-        handled = TRUE;
+        handled = true;
         break;
     default:
         break;
@@ -700,7 +700,7 @@ void LLMultiSlider::draw()
                 mIt->second.mTop + extra_triangle_height,
                 mIt->second.mLeft + mIt->second.getWidth() / 2,
                 mIt->second.mBottom - extra_triangle_height,
-                mTriangleColor.get() % opacity, TRUE);
+                mTriangleColor.get() % opacity, true);
         }
     }
     else if (!mRoundedSquareImgp && !mThumbImagep)
@@ -725,23 +725,23 @@ void LLMultiSlider::draw()
             }
 
             // the draw command
-            gl_rect_2d(mIt->second, curThumbColor, TRUE);
+            gl_rect_2d(mIt->second, curThumbColor, true);
         }
 
         // now draw the current and hover sliders
         if(curSldrIt != mThumbRects.end())
         {
-            gl_rect_2d(curSldrIt->second, mThumbCenterSelectedColor.get(), TRUE);
+            gl_rect_2d(curSldrIt->second, mThumbCenterSelectedColor.get(), true);
         }
 
         // and draw the drag start
         if (gFocusMgr.getMouseCapture() == this)
         {
-            gl_rect_2d(mDragStartThumbRect, mThumbCenterColor.get() % opacity, FALSE);
+            gl_rect_2d(mDragStartThumbRect, mThumbCenterColor.get() % opacity, false);
         }
         else if (hoverSldrIt != mThumbRects.end())
         {
-            gl_rect_2d(hoverSldrIt->second, mThumbCenterSelectedColor.get(), TRUE);
+            gl_rect_2d(hoverSldrIt->second, mThumbCenterSelectedColor.get(), true);
         }
     }
     else
diff --git a/indra/llui/llmultislider.h b/indra/llui/llmultislider.h
index 963c6e5fab..b2bfc8bc84 100644
--- a/indra/llui/llmultislider.h
+++ b/indra/llui/llmultislider.h
@@ -81,7 +81,7 @@ public:
     // Multi-slider rounds values to nearest increments (bias towards rounding down)
     F32                 getNearestIncrement(F32 value) const;
 
-    void                setSliderValue(const std::string& name, F32 value, BOOL from_event = FALSE);
+    void                setSliderValue(const std::string& name, F32 value, bool from_event = false);
     F32                 getSliderValue(const std::string& name) const;
     F32                 getSliderValueFromPos(S32 xpos, S32 ypos) const;
     LLRect              getSliderThumbRect(const std::string& name) const;
@@ -94,7 +94,7 @@ public:
     F32                 getCurSliderValue() const               { return getSliderValue(mCurSlider); }
     void                setCurSlider(const std::string& name);
     void                resetCurSlider();
-    void                setCurSliderValue(F32 val, BOOL from_event = false) { setSliderValue(mCurSlider, val, from_event); }
+    void                setCurSliderValue(F32 val, bool from_event = false) { setSliderValue(mCurSlider, val, from_event); }
 
     /*virtual*/ void    setValue(const LLSD& value) override;
     /*virtual*/ LLSD    getValue() const override { return mValue; }
@@ -110,15 +110,15 @@ public:
     void                deleteCurSlider()           { deleteSlider(mCurSlider); }
     /*virtual*/ void    clear() override;
 
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL    handleMouseDown(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL    handleKeyHere(KEY key, MASK mask) override;
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleMouseDown(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleKeyHere(KEY key, MASK mask) override;
     /*virtual*/ void    onMouseLeave(S32 x, S32 y, MASK mask) override;
     /*virtual*/ void    draw() override;
 
     S32             getMaxNumSliders() { return mMaxNumSliders; }
-    S32             getCurNumSliders() { return mValue.size(); }
+    S32             getCurNumSliders() { return static_cast<S32>(mValue.size()); }
     F32             getOverlapThreshold() { return mOverlapThreshold; }
     bool            canAddSliders() { return mValue.size() < mMaxNumSliders; }
 
@@ -130,11 +130,11 @@ protected:
     static S32      mNameCounter;
 
     S32             mMaxNumSliders;
-    BOOL            mAllowOverlap;
-    BOOL            mLoopOverlap;
+    bool            mAllowOverlap;
+    bool            mLoopOverlap;
     F32             mOverlapThreshold;
-    BOOL            mDrawTrack;
-    BOOL            mUseTriangle;           /// hacked in toggle to use a triangle
+    bool            mDrawTrack;
+    bool            mUseTriangle;           /// hacked in toggle to use a triangle
 
     S32             mMouseOffset;
     LLRect          mDragStartThumbRect;
diff --git a/indra/llui/llmultisliderctrl.cpp b/indra/llui/llmultisliderctrl.cpp
index b0598b4388..01e2fc6ac9 100644
--- a/indra/llui/llmultisliderctrl.cpp
+++ b/indra/llui/llmultisliderctrl.cpp
@@ -144,7 +144,7 @@ LLMultiSliderCtrl::LLMultiSliderCtrl(const LLMultiSliderCtrl::Params& p)
             mEditor->setFocusReceivedCallback( boost::bind(LLMultiSliderCtrl::onEditorGainFocus, _1, this) );
             // don't do this, as selecting the entire text is single clicking in some cases
             // and double clicking in others
-            //mEditor->setSelectAllonFocusReceived(TRUE);
+            //mEditor->setSelectAllonFocusReceived(true);
             addChild(mEditor);
         }
         else
@@ -219,7 +219,7 @@ void LLMultiSliderCtrl::setValue(const LLSD& value)
     updateText();
 }
 
-void LLMultiSliderCtrl::setSliderValue(const std::string& name, F32 v, BOOL from_event)
+void LLMultiSliderCtrl::setSliderValue(const std::string& name, F32 v, bool from_event)
 {
     mMultiSlider->setSliderValue(name, v, from_event );
     mCurValue = mMultiSlider->getCurSliderValue();
@@ -237,9 +237,9 @@ void LLMultiSliderCtrl::resetCurSlider()
     mMultiSlider->resetCurSlider();
 }
 
-BOOL LLMultiSliderCtrl::setLabelArg( const std::string& key, const LLStringExplicit& text )
+bool LLMultiSliderCtrl::setLabelArg( const std::string& key, const LLStringExplicit& text )
 {
-    BOOL res = FALSE;
+    bool res = false;
     if (mLabelBox)
     {
         res = mLabelBox->setTextArg(key, text);
@@ -329,7 +329,7 @@ void LLMultiSliderCtrl::clear()
 
 }
 
-BOOL LLMultiSliderCtrl::isMouseHeldDown()
+bool LLMultiSliderCtrl::isMouseHeldDown()
 {
     return gFocusMgr.getMouseCapture() == mMultiSlider;
 }
@@ -368,7 +368,7 @@ void LLMultiSliderCtrl::onEditorCommit( LLUICtrl* ctrl, const LLSD& userdata)
     if (!self) // cast failed - wrong type! :O
         return;
 
-    BOOL success = FALSE;
+    bool success = false;
     F32 val = self->mCurValue;
     F32 saved_val = self->mCurValue;
 
@@ -382,7 +382,7 @@ void LLMultiSliderCtrl::onEditorCommit( LLUICtrl* ctrl, const LLSD& userdata)
             self->setCurSliderValue( val );  // set the value temporarily so that the callback can retrieve it.
             if( !self->mValidateSignal || (*(self->mValidateSignal))( self, val ) )
             {
-                success = TRUE;
+                success = true;
             }
         }
     }
@@ -409,14 +409,14 @@ void LLMultiSliderCtrl::onSliderCommit(LLUICtrl* ctrl, const LLSD& userdata)
     if (!self)
         return;
 
-    BOOL success = FALSE;
+    bool success = false;
     F32 saved_val = self->mCurValue;
     F32 new_val = self->mMultiSlider->getCurSliderValue();
 
     self->mCurValue = new_val;  // set the value temporarily so that the callback can retrieve it.
     if( !self->mValidateSignal || (*(self->mValidateSignal))( self, new_val ) )
     {
-        success = TRUE;
+        success = true;
     }
 
     if( success )
@@ -434,7 +434,7 @@ void LLMultiSliderCtrl::onSliderCommit(LLUICtrl* ctrl, const LLSD& userdata)
     self->updateText();
 }
 
-void LLMultiSliderCtrl::setEnabled(BOOL b)
+void LLMultiSliderCtrl::setEnabled(bool b)
 {
     LLF32UICtrl::setEnabled( b );
 
@@ -457,7 +457,7 @@ void LLMultiSliderCtrl::setEnabled(BOOL b)
 }
 
 
-void LLMultiSliderCtrl::setTentative(BOOL b)
+void LLMultiSliderCtrl::setTentative(bool b)
 {
     if( mEditor )
     {
@@ -469,11 +469,11 @@ void LLMultiSliderCtrl::setTentative(BOOL b)
 
 void LLMultiSliderCtrl::onCommit()
 {
-    setTentative(FALSE);
+    setTentative(false);
 
     if( mEditor )
     {
-        mEditor->setTentative(FALSE);
+        mEditor->setTentative(false);
     }
 
     setControlValue(getValueF32());
diff --git a/indra/llui/llmultisliderctrl.h b/indra/llui/llmultisliderctrl.h
index e3b190a938..fee05c92fd 100644
--- a/indra/llui/llmultisliderctrl.h
+++ b/indra/llui/llmultisliderctrl.h
@@ -83,24 +83,24 @@ public:
     virtual ~LLMultiSliderCtrl();
 
     F32             getSliderValue(const std::string& name) const   { return mMultiSlider->getSliderValue(name); }
-    void            setSliderValue(const std::string& name, F32 v, BOOL from_event = FALSE);
+    void            setSliderValue(const std::string& name, F32 v, bool from_event = false);
 
     virtual void    setValue(const LLSD& value );
     virtual LLSD    getValue() const        { return mMultiSlider->getValue(); }
-    virtual BOOL    setLabelArg( const std::string& key, const LLStringExplicit& text );
+    virtual bool    setLabelArg( const std::string& key, const LLStringExplicit& text );
 
     const std::string& getCurSlider() const                 { return mMultiSlider->getCurSlider(); }
     F32             getCurSliderValue() const               { return mCurValue; }
     void            setCurSlider(const std::string& name);
     void            resetCurSlider();
-    void            setCurSliderValue(F32 val, BOOL from_event = false) { setSliderValue(mMultiSlider->getCurSlider(), val, from_event); }
+    void            setCurSliderValue(F32 val, bool from_event = false) { setSliderValue(mMultiSlider->getCurSlider(), val, from_event); }
 
     virtual void    setMinValue(const LLSD& min_value)  { setMinValue((F32)min_value.asReal()); }
     virtual void    setMaxValue(const LLSD& max_value)  { setMaxValue((F32)max_value.asReal());  }
 
-    BOOL            isMouseHeldDown();
+    bool            isMouseHeldDown();
 
-    virtual void    setEnabled( BOOL b );
+    virtual void    setEnabled( bool b );
     virtual void    clear();
     virtual void    setPrecision(S32 precision);
     void            setMinValue(F32 min_value) {mMultiSlider->setMinValue(min_value);}
@@ -138,7 +138,7 @@ public:
 
     virtual void    onTabInto();
 
-    virtual void    setTentative(BOOL b);           // marks value as tentative
+    virtual void    setTentative(bool b);           // marks value as tentative
     virtual void    onCommit();                     // mark not tentative, then commit
 
     virtual void        setControlName(const std::string& control_name, LLView* context);
@@ -155,8 +155,8 @@ private:
 
 private:
     const LLFontGL* mFont;
-    BOOL            mShowText;
-    BOOL            mCanEditText;
+    bool            mShowText;
+    bool            mCanEditText;
 
     S32             mPrecision;
     LLTextBox*      mLabelBox;
diff --git a/indra/llui/llnotifications.cpp b/indra/llui/llnotifications.cpp
index 2fbae73b65..bee7d5bb3f 100644
--- a/indra/llui/llnotifications.cpp
+++ b/indra/llui/llnotifications.cpp
@@ -216,10 +216,10 @@ LLNotificationForm::LLNotificationForm(const std::string& name, const LLNotifica
             ui_inst->mSettingGroups["ignores"]->declareLLSD(std::string("Default") + name, "", std::string("Default response for notification " + name));
         }
 
-        BOOL show_notification = TRUE;
+        bool show_notification = true;
         if (p.ignore.control.isProvided())
         {
-            mIgnoreSetting = ui_inst->mSettingGroups["config"]->getControl(p.ignore.control);
+            mIgnoreSetting = ui_inst->mSettingGroups["config"]->getControl(p.ignore.control());
             mInvertSetting = p.ignore.invert_control;
         }
         else if (mIgnore > IGNORE_NO)
@@ -1187,7 +1187,7 @@ bool LLNotificationChannel::isEmpty() const
 
 S32 LLNotificationChannel::size() const
 {
-    return mItems.size();
+    return static_cast<S32>(mItems.size());
 }
 
 size_t LLNotificationChannel::size()
@@ -1560,7 +1560,7 @@ bool LLNotifications::loadTemplates()
 
     std::string base_filename = search_paths.front();
     LLXMLNodePtr root;
-    BOOL success  = LLXMLNode::getLayeredXMLNode(root, search_paths);
+    bool success  = LLXMLNode::getLayeredXMLNode(root, search_paths);
 
     if (!success || root.isNull() || !root->hasName( "notifications" ))
     {
diff --git a/indra/llui/llnotifications.h b/indra/llui/llnotifications.h
index ab4f009a80..d3615b6601 100644
--- a/indra/llui/llnotifications.h
+++ b/indra/llui/llnotifications.h
@@ -249,7 +249,7 @@ public:
     void fromLLSD(const LLSD& sd);
     LLSD asLLSD() const;
 
-    S32 getNumElements() { return mFormData.size(); }
+    S32 getNumElements() { return static_cast<S32>(mFormData.size()); }
     LLSD getElement(S32 index) { return mFormData.get(index); }
     LLSD getElement(const std::string& element_name);
     void getElements(LLSD& elements, S32 offset = 0);
@@ -444,11 +444,11 @@ public:
     // return response LLSD filled in with default form contents and (optionally) the default button selected
     LLSD getResponseTemplate(EResponseTemplateType type = WITHOUT_DEFAULT_BUTTON);
 
-    // returns index of first button with value==TRUE
+    // returns index of first button with value==true
     // usually this the button the user clicked on
     // returns -1 if no button clicked (e.g. form has not been displayed)
     static S32 getSelectedOption(const LLSD& notification, const LLSD& response);
-    // returns name of first button with value==TRUE
+    // returns name of first button with value==true
     static std::string getSelectedOptionName(const LLSD& notification);
 
     // after someone responds to a notification (usually by clicking a button,
diff --git a/indra/llui/llpanel.cpp b/indra/llui/llpanel.cpp
index d580566b13..468cdb10fb 100644
--- a/indra/llui/llpanel.cpp
+++ b/indra/llui/llpanel.cpp
@@ -55,7 +55,7 @@ LLPanel::factory_stack_t    LLPanel::sFactoryStack;
 
 // Compiler optimization, generate extern template
 template class LLPanel* LLView::getChild<class LLPanel>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 
 LLPanel::LocalizedString::LocalizedString()
 :   name("name"),
@@ -127,9 +127,9 @@ LLPanel::~LLPanel()
 }
 
 // virtual
-BOOL LLPanel::isPanel() const
+bool LLPanel::isPanel() const
 {
-    return TRUE;
+    return true;
 }
 
 void LLPanel::addBorder(LLViewBorder::Params p)
@@ -167,13 +167,13 @@ void LLPanel::clearCtrls()
     for (LLPanel::ctrl_list_t::iterator ctrl_it = ctrls.begin(); ctrl_it != ctrls.end(); ++ctrl_it)
     {
         LLUICtrl* ctrl = *ctrl_it;
-        ctrl->setFocus( FALSE );
-        ctrl->setEnabled( FALSE );
+        ctrl->setFocus( false );
+        ctrl->setEnabled( false );
         ctrl->clear();
     }
 }
 
-void LLPanel::setCtrlsEnabled( BOOL b )
+void LLPanel::setCtrlsEnabled( bool b )
 {
     LLPanel::ctrl_list_t ctrls = getCtrlList();
     for (LLPanel::ctrl_list_t::iterator ctrl_it = ctrls.begin(); ctrl_it != ctrls.end(); ++ctrl_it)
@@ -247,13 +247,13 @@ void LLPanel::updateDefaultBtn()
         if (gFocusMgr.childHasKeyboardFocus( this ) && mDefaultBtn->getEnabled())
         {
             LLButton* buttonp = dynamic_cast<LLButton*>(gFocusMgr.getKeyboardFocus());
-            BOOL focus_is_child_button = buttonp && buttonp->getCommitOnReturn();
+            bool focus_is_child_button = buttonp && buttonp->getCommitOnReturn();
             // only enable default button when current focus is not a return-capturing button
             mDefaultBtn->setBorderEnabled(!focus_is_child_button);
         }
         else
         {
-            mDefaultBtn->setBorderEnabled(FALSE);
+            mDefaultBtn->setBorderEnabled(false);
         }
     }
 }
@@ -261,19 +261,19 @@ void LLPanel::updateDefaultBtn()
 void LLPanel::refresh()
 {
     // do nothing by default
-    // but is automatically called in setFocus(TRUE)
+    // but is automatically called in setFocus(true)
 }
 
 void LLPanel::setDefaultBtn(LLButton* btn)
 {
     if (mDefaultBtn && mDefaultBtn->getEnabled())
     {
-        mDefaultBtn->setBorderEnabled(FALSE);
+        mDefaultBtn->setBorderEnabled(false);
     }
     mDefaultBtn = btn;
     if (mDefaultBtn)
     {
-        mDefaultBtn->setBorderEnabled(TRUE);
+        mDefaultBtn->setBorderEnabled(true);
     }
 }
 
@@ -290,17 +290,17 @@ void LLPanel::setDefaultBtn(const std::string& id)
     }
 }
 
-BOOL LLPanel::handleKeyHere( KEY key, MASK mask )
+bool LLPanel::handleKeyHere( KEY key, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     LLUICtrl* cur_focus = dynamic_cast<LLUICtrl*>(gFocusMgr.getKeyboardFocus());
 
     // handle user hitting ESC to defocus
     if (key == KEY_ESCAPE)
     {
-        setFocus(FALSE);
-        return TRUE;
+        setFocus(false);
+        return true;
     }
     else if( (mask == MASK_SHIFT) && (KEY_TAB == key))
     {
@@ -310,7 +310,7 @@ BOOL LLPanel::handleKeyHere( KEY key, MASK mask )
             LLUICtrl* focus_root = cur_focus->findRootMostFocusRoot();
             if (focus_root)
             {
-                handled = focus_root->focusPrevItem(FALSE);
+                handled = focus_root->focusPrevItem(false);
             }
         }
     }
@@ -322,7 +322,7 @@ BOOL LLPanel::handleKeyHere( KEY key, MASK mask )
             LLUICtrl* focus_root = cur_focus->findRootMostFocusRoot();
             if (focus_root)
             {
-                handled = focus_root->focusNextItem(FALSE);
+                handled = focus_root->focusNextItem(false);
             }
         }
     }
@@ -335,38 +335,38 @@ BOOL LLPanel::handleKeyHere( KEY key, MASK mask )
         {
             // current focus is a return-capturing button,
             // let *that* button handle the return key
-            handled = FALSE;
+            handled = false;
         }
         else if (mDefaultBtn && mDefaultBtn->getVisible() && mDefaultBtn->getEnabled())
         {
             // If we have a default button, click it when return is pressed
             mDefaultBtn->onCommit();
-            handled = TRUE;
+            handled = true;
         }
         else if (cur_focus->acceptsTextInput())
         {
             // call onCommit for text input handling control
             cur_focus->onCommit();
-            handled = TRUE;
+            handled = true;
         }
     }
 
     return handled;
 }
 
-void LLPanel::onVisibilityChange ( BOOL new_visibility )
+void LLPanel::onVisibilityChange ( bool new_visibility )
 {
     LLUICtrl::onVisibilityChange ( new_visibility );
     if (mVisibleSignal)
-        (*mVisibleSignal)(this, LLSD(new_visibility) ); // Pass BOOL as LLSD
+        (*mVisibleSignal)(this, LLSD(new_visibility) ); // Pass bool as LLSD
 }
 
-void LLPanel::setFocus(BOOL b)
+void LLPanel::setFocus(bool b)
 {
     if( b && !hasFocus())
     {
         // give ourselves focus preemptively, to avoid infinite loop
-        LLUICtrl::setFocus(TRUE);
+        LLUICtrl::setFocus(true);
         // then try to pass to first valid child
         focusFirstItem();
     }
@@ -376,7 +376,7 @@ void LLPanel::setFocus(BOOL b)
     }
 }
 
-void LLPanel::setBorderVisible(BOOL b)
+void LLPanel::setBorderVisible(bool b)
 {
     if (mBorder)
     {
@@ -504,7 +504,7 @@ static LLTrace::BlockTimerStatHandle FTM_PANEL_SETUP("Panel Setup");
 static LLTrace::BlockTimerStatHandle FTM_EXTERNAL_PANEL_LOAD("Load Extern Panel Reference");
 static LLTrace::BlockTimerStatHandle FTM_PANEL_POSTBUILD("Panel PostBuild");
 
-BOOL LLPanel::initPanelXML(LLXMLNodePtr node, LLView *parent, LLXMLNodePtr output_node, const LLPanel::Params& default_params)
+bool LLPanel::initPanelXML(LLXMLNodePtr node, LLView *parent, LLXMLNodePtr output_node, const LLPanel::Params& default_params)
 {
     Params params(default_params);
     {
@@ -533,7 +533,7 @@ BOOL LLPanel::initPanelXML(LLXMLNodePtr node, LLView *parent, LLXMLNodePtr outpu
                 setupParamsForExport(output_params, parent);
                 output_node->setName(node->getName()->mString);
                 parser.writeXUI(output_node, output_params, LLInitParam::default_parse_rules(), &default_params);
-                return TRUE;
+                return true;
             }
 
             LLUICtrlFactory::instance().pushFileName(xml_filename);
@@ -543,7 +543,7 @@ BOOL LLPanel::initPanelXML(LLXMLNodePtr node, LLView *parent, LLXMLNodePtr outpu
             {
                 LL_WARNS() << "Couldn't parse panel from: " << xml_filename << LL_ENDL;
 
-                return FALSE;
+                return false;
             }
 
             parser.readXUI(referenced_xml, params, LLUICtrlFactory::getInstance()->getCurFileName());
@@ -590,7 +590,7 @@ BOOL LLPanel::initPanelXML(LLXMLNodePtr node, LLView *parent, LLXMLNodePtr outpu
             postBuild();
         }
     }
-    return TRUE;
+    return true;
 }
 
 bool LLPanel::hasString(const std::string& name)
@@ -658,7 +658,7 @@ void LLPanel::childSetEnabled(const std::string& id, bool enabled)
     }
 }
 
-void LLPanel::childSetFocus(const std::string& id, BOOL focus)
+void LLPanel::childSetFocus(const std::string& id, bool focus)
 {
     LLUICtrl* child = findChild<LLUICtrl>(id);
     if (child)
@@ -667,7 +667,7 @@ void LLPanel::childSetFocus(const std::string& id, BOOL focus)
     }
 }
 
-BOOL LLPanel::childHasFocus(const std::string& id)
+bool LLPanel::childHasFocus(const std::string& id)
 {
     LLUICtrl* child = findChild<LLUICtrl>(id);
     if (child)
@@ -676,7 +676,7 @@ BOOL LLPanel::childHasFocus(const std::string& id)
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -752,24 +752,24 @@ LLSD LLPanel::childGetValue(const std::string& id) const
     return LLSD();
 }
 
-BOOL LLPanel::childSetTextArg(const std::string& id, const std::string& key, const LLStringExplicit& text)
+bool LLPanel::childSetTextArg(const std::string& id, const std::string& key, const LLStringExplicit& text)
 {
     LLUICtrl* child = findChild<LLUICtrl>(id);
     if (child)
     {
         return child->setTextArg(key, text);
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLPanel::childSetLabelArg(const std::string& id, const std::string& key, const LLStringExplicit& text)
+bool LLPanel::childSetLabelArg(const std::string& id, const std::string& key, const LLStringExplicit& text)
 {
     LLView* child = findChild<LLView>(id);
     if (child)
     {
         return child->setLabelArg(key, text);
     }
-    return FALSE;
+    return false;
 }
 
 void LLPanel::childSetAction(const std::string& id, const commit_signal_t::slot_type& function)
@@ -803,10 +803,10 @@ boost::signals2::connection LLPanel::setVisibleCallback( const commit_signal_t::
 //-----------------------------------------------------------------------------
 // buildPanel()
 //-----------------------------------------------------------------------------
-BOOL LLPanel::buildFromFile(const std::string& filename, const LLPanel::Params& default_params)
+bool LLPanel::buildFromFile(const std::string& filename, const LLPanel::Params& default_params)
 {
     LL_PROFILE_ZONE_SCOPED;
-    BOOL didPost = FALSE;
+    bool didPost = false;
     LLXMLNodePtr root;
 
     if (!LLUICtrlFactory::getLayeredXMLNode(filename, root))
diff --git a/indra/llui/llpanel.h b/indra/llui/llpanel.h
index 365cac9fe6..2be5573faf 100644
--- a/indra/llui/llpanel.h
+++ b/indra/llui/llpanel.h
@@ -40,8 +40,8 @@
 #include <queue>
 
 const S32 LLPANEL_BORDER_WIDTH = 1;
-const BOOL BORDER_YES = TRUE;
-const BOOL BORDER_NO = FALSE;
+const bool BORDER_YES = true;
+const bool BORDER_NO = false;
 
 class LLButton;
 class LLUIImage;
@@ -107,20 +107,20 @@ protected:
 public:
     typedef std::vector<class LLUICtrl *>               ctrl_list_t;
 
-    BOOL buildFromFile(const std::string &filename, const LLPanel::Params& default_params = getDefaultParams());
+    bool buildFromFile(const std::string &filename, const LLPanel::Params& default_params = getDefaultParams());
 
     static LLPanel* createFactoryPanel(const std::string& name);
 
     /*virtual*/ ~LLPanel();
 
     // LLView interface
-    /*virtual*/ BOOL    isPanel() const;
+    /*virtual*/ bool    isPanel() const;
     /*virtual*/ void    draw();
-    /*virtual*/ BOOL    handleKeyHere( KEY key, MASK mask );
-    /*virtual*/ void    onVisibilityChange ( BOOL new_visibility );
+    /*virtual*/ bool    handleKeyHere( KEY key, MASK mask );
+    /*virtual*/ void    onVisibilityChange ( bool new_visibility );
 
     // From LLFocusableElement
-    /*virtual*/ void    setFocus( BOOL b );
+    /*virtual*/ void    setFocus( bool b );
 
     // New virtuals
     virtual     void    refresh();  // called in setFocus()
@@ -131,8 +131,8 @@ public:
     void addBorder( LLViewBorder::Params p);
     void addBorder();
     void            removeBorder();
-    BOOL            hasBorder() const { return mBorder != NULL; }
-    void            setBorderVisible( BOOL b );
+    bool            hasBorder() const { return mBorder != NULL; }
+    void            setBorderVisible( bool b );
 
     void            setBackgroundColor( const LLColor4& color ) { mBgOpaqueColor = color; }
     const LLColor4& getBackgroundColor() const { return mBgOpaqueColor; }
@@ -144,10 +144,10 @@ public:
     LLPointer<LLUIImage> getTransparentImage() const { return mBgAlphaImage; }
     LLColor4        getBackgroundImageOverlay() { return mBgOpaqueImageOverlay; }
     LLColor4        getTransparentImageOverlay() { return mBgAlphaImageOverlay; }
-    void            setBackgroundVisible( BOOL b )  { mBgVisible = b; }
-    BOOL            isBackgroundVisible() const { return mBgVisible; }
-    void            setBackgroundOpaque(BOOL b)     { mBgOpaque = b; }
-    BOOL            isBackgroundOpaque() const { return mBgOpaque; }
+    void            setBackgroundVisible( bool b )  { mBgVisible = b; }
+    bool            isBackgroundVisible() const { return mBgVisible; }
+    void            setBackgroundOpaque(bool b)     { mBgOpaque = b; }
+    bool            isBackgroundOpaque() const { return mBgOpaque; }
     void            setDefaultBtn(LLButton* btn = NULL);
     void            setDefaultBtn(const std::string& id);
     void            updateDefaultBtn();
@@ -156,7 +156,7 @@ public:
     void            setHelpTopic(const std::string& help_topic) { mHelpTopic = help_topic; }
     std::string     getHelpTopic() const { return mHelpTopic; }
 
-    void            setCtrlsEnabled(BOOL b);
+    void            setCtrlsEnabled(bool b);
     ctrl_list_t     getCtrlList() const;
 
     LLHandle<LLPanel>   getHandle() const { return getDerivedHandle<LLPanel>(); }
@@ -167,7 +167,7 @@ public:
     EnableCallbackRegistry::ScopedRegistrar& getEnableCallbackRegistrar() { return mEnableCallbackRegistrar; }
 
     void initFromParams(const Params& p);
-    BOOL initPanelXML(  LLXMLNodePtr node, LLView *parent, LLXMLNodePtr output_node, const LLPanel::Params& default_params);
+    bool initPanelXML(  LLXMLNodePtr node, LLView *parent, LLXMLNodePtr output_node, const LLPanel::Params& default_params);
 
     bool hasString(const std::string& name);
     std::string getString(const std::string& name, const LLStringUtil::format_map_t& args) const;
@@ -184,8 +184,8 @@ public:
     void childDisable(const std::string& name) { childSetEnabled(name, false); };
 
     // LLUICtrl
-    void childSetFocus(const std::string& id, BOOL focus = TRUE);
-    BOOL childHasFocus(const std::string& id);
+    void childSetFocus(const std::string& id, bool focus = true);
+    bool childHasFocus(const std::string& id);
 
     // *TODO: Deprecate; for backwards compatability only:
     // Prefer getChild<LLUICtrl>("foo")->setCommitCallback(boost:bind(...)),
@@ -203,9 +203,9 @@ public:
     LLSD childGetValue(const std::string& id) const;
 
     // For setting text / label replacement params, e.g. "Hello [NAME]"
-    // Not implemented for all types, defaults to noop, returns FALSE if not applicaple
-    BOOL childSetTextArg(const std::string& id, const std::string& key, const LLStringExplicit& text);
-    BOOL childSetLabelArg(const std::string& id, const std::string& key, const LLStringExplicit& text);
+    // Not implemented for all types, defaults to noop, returns false if not applicaple
+    bool childSetTextArg(const std::string& id, const std::string& key, const LLStringExplicit& text);
+    bool childSetLabelArg(const std::string& id, const std::string& key, const LLStringExplicit& text);
 
     // LLButton
     void childSetAction(const std::string& id, boost::function<void(void*)> function, void* value);
@@ -238,8 +238,8 @@ protected:
     std::string     mXMLFilename;
 
 private:
-    BOOL            mBgVisible;             // any background at all?
-    BOOL            mBgOpaque;              // use opaque color or image
+    bool            mBgVisible;             // any background at all?
+    bool            mBgOpaque;              // use opaque color or image
     LLUIColor       mBgOpaqueColor;
     LLUIColor       mBgAlphaColor;
     LLUIColor       mBgOpaqueImageOverlay;
@@ -259,7 +259,7 @@ private:
 // Build time optimization, generate once in .cpp file
 #ifndef LLPANEL_CPP
 extern template class LLPanel* LLView::getChild<class LLPanel>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 #endif
 
 typedef boost::function<LLPanel* (void)> LLPanelClassCreatorFunc;
diff --git a/indra/llui/llradiogroup.cpp b/indra/llui/llradiogroup.cpp
index ff53563a4c..2aff434612 100644
--- a/indra/llui/llradiogroup.cpp
+++ b/indra/llui/llradiogroup.cpp
@@ -53,8 +53,8 @@ public:
     /*virtual*/ ~LLRadioCtrl();
     /*virtual*/ void setValue(const LLSD& value);
 
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool postBuild();
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
 
     LLSD getPayload() { return mPayload; }
 
@@ -119,16 +119,16 @@ LLRadioGroup::~LLRadioGroup()
 }
 
 // virtual
-BOOL LLRadioGroup::postBuild()
+bool LLRadioGroup::postBuild()
 {
     if (!mRadioButtons.empty())
     {
         mRadioButtons[0]->setTabStop(true);
     }
-    return TRUE;
+    return true;
 }
 
-void LLRadioGroup::setIndexEnabled(S32 index, BOOL enabled)
+void LLRadioGroup::setIndexEnabled(S32 index, bool enabled)
 {
     S32 count = 0;
     for (button_list_t::iterator iter = mRadioButtons.begin();
@@ -138,7 +138,7 @@ void LLRadioGroup::setIndexEnabled(S32 index, BOOL enabled)
         if (count == index)
         {
             child->setEnabled(enabled);
-            if (index == mSelectedIndex && enabled == FALSE)
+            if (index == mSelectedIndex && !enabled)
             {
                 setSelectedIndex(-1);
             }
@@ -173,30 +173,30 @@ void LLRadioGroup::setIndexEnabled(S32 index, BOOL enabled)
     }
 }
 
-BOOL LLRadioGroup::setSelectedIndex(S32 index, BOOL from_event)
+bool LLRadioGroup::setSelectedIndex(S32 index, bool from_event)
 {
     if ((S32)mRadioButtons.size() <= index )
     {
-        return FALSE;
+        return false;
     }
 
     if (index < -1)
     {
         // less then minimum value
-        return FALSE;
+        return false;
     }
 
     if (index < 0 && mSelectedIndex >= 0 && !mAllowDeselect)
     {
         // -1 is "nothing selected"
-        return FALSE;
+        return false;
     }
 
     if (mSelectedIndex >= 0)
     {
         LLRadioCtrl* old_radio_item = mRadioButtons[mSelectedIndex];
         old_radio_item->setTabStop(false);
-        old_radio_item->setValue( FALSE );
+        old_radio_item->setValue( false );
     }
     else
     {
@@ -209,11 +209,11 @@ BOOL LLRadioGroup::setSelectedIndex(S32 index, BOOL from_event)
     {
         LLRadioCtrl* radio_item = mRadioButtons[mSelectedIndex];
         radio_item->setTabStop(true);
-        radio_item->setValue( TRUE );
+        radio_item->setValue( true );
 
         if (hasFocus())
         {
-            radio_item->focusFirstItem(FALSE, FALSE);
+            radio_item->focusFirstItem(false, false);
         }
     }
 
@@ -222,7 +222,7 @@ BOOL LLRadioGroup::setSelectedIndex(S32 index, BOOL from_event)
         setControlValue(getValue());
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLRadioGroup::focusSelectedRadioBtn()
@@ -232,18 +232,18 @@ void LLRadioGroup::focusSelectedRadioBtn()
         LLRadioCtrl* radio_item = mRadioButtons[mSelectedIndex];
         if (radio_item->hasTabStop() && radio_item->getEnabled())
         {
-            radio_item->focusFirstItem(FALSE, FALSE);
+            radio_item->focusFirstItem(false, false);
         }
     }
     else if (mRadioButtons[0]->hasTabStop() || hasTabStop())
     {
-        focusFirstItem(FALSE, FALSE);
+        focusFirstItem(false, false);
     }
 }
 
-BOOL LLRadioGroup::handleKeyHere(KEY key, MASK mask)
+bool LLRadioGroup::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     // do any of the tab buttons have keyboard focus?
     if (mask == MASK_NONE)
     {
@@ -258,7 +258,7 @@ BOOL LLRadioGroup::handleKeyHere(KEY key, MASK mask)
             {
                 onCommit();
             }
-            handled = TRUE;
+            handled = true;
             break;
         case KEY_UP:
             if (!setSelectedIndex((getSelectedIndex() - 1)))
@@ -269,7 +269,7 @@ BOOL LLRadioGroup::handleKeyHere(KEY key, MASK mask)
             {
                 onCommit();
             }
-            handled = TRUE;
+            handled = true;
             break;
         case KEY_LEFT:
             if (!setSelectedIndex((getSelectedIndex() - 1)))
@@ -280,7 +280,7 @@ BOOL LLRadioGroup::handleKeyHere(KEY key, MASK mask)
             {
                 onCommit();
             }
-            handled = TRUE;
+            handled = true;
             break;
         case KEY_RIGHT:
             if (!setSelectedIndex((getSelectedIndex() + 1)))
@@ -291,7 +291,7 @@ BOOL LLRadioGroup::handleKeyHere(KEY key, MASK mask)
             {
                 onCommit();
             }
-            handled = TRUE;
+            handled = true;
             break;
         default:
             break;
@@ -358,11 +358,11 @@ void LLRadioGroup::setValue( const LLSD& value )
         // string not found, try integer
         if (value.isInteger())
         {
-            setSelectedIndex((S32) value.asInteger(), TRUE);
+            setSelectedIndex((S32) value.asInteger(), true);
         }
         else
         {
-            setSelectedIndex(-1, TRUE);
+            setSelectedIndex(-1, true);
         }
     }
 }
@@ -381,9 +381,9 @@ LLSD LLRadioGroup::getValue() const
 }
 
 // LLCtrlSelectionInterface functions
-BOOL    LLRadioGroup::setCurrentByID( const LLUUID& id )
+bool    LLRadioGroup::setCurrentByID( const LLUUID& id )
 {
-    return FALSE;
+    return false;
 }
 
 LLUUID  LLRadioGroup::getCurrentID() const
@@ -391,7 +391,7 @@ LLUUID  LLRadioGroup::getCurrentID() const
     return LLUUID::null;
 }
 
-BOOL    LLRadioGroup::setSelectedByValue(const LLSD& value, BOOL selected)
+bool    LLRadioGroup::setSelectedByValue(const LLSD& value, bool selected)
 {
     S32 idx = 0;
     for (button_list_t::const_iterator iter = mRadioButtons.begin();
@@ -400,12 +400,12 @@ BOOL    LLRadioGroup::setSelectedByValue(const LLSD& value, BOOL selected)
         if((*iter)->getPayload().asString() == value.asString())
         {
             setSelectedIndex(idx);
-            return TRUE;
+            return true;
         }
         idx++;
     }
 
-    return FALSE;
+    return false;
 }
 
 LLSD    LLRadioGroup::getSelectedValue()
@@ -413,7 +413,7 @@ LLSD    LLRadioGroup::getSelectedValue()
     return getValue();
 }
 
-BOOL    LLRadioGroup::isSelected(const LLSD& value) const
+bool    LLRadioGroup::isSelected(const LLSD& value) const
 {
     S32 idx = 0;
     for (button_list_t::const_iterator iter = mRadioButtons.begin();
@@ -423,22 +423,22 @@ BOOL    LLRadioGroup::isSelected(const LLSD& value) const
         {
             if (idx == mSelectedIndex)
             {
-                return TRUE;
+                return true;
             }
         }
         idx++;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL    LLRadioGroup::operateOnSelection(EOperation op)
+bool    LLRadioGroup::operateOnSelection(EOperation op)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL    LLRadioGroup::operateOnAll(EOperation op)
+bool    LLRadioGroup::operateOnAll(EOperation op)
 {
-    return FALSE;
+    return false;
 }
 
 LLRadioGroup::ItemParams::ItemParams()
@@ -458,7 +458,7 @@ LLRadioCtrl::LLRadioCtrl(const LLRadioGroup::ItemParams& p)
     }
 }
 
-BOOL LLRadioCtrl::postBuild()
+bool LLRadioCtrl::postBuild()
 {
     // Old-style radio_item used the text contents to indicate the label,
     // but new-style radio_item uses label attribute.
@@ -467,15 +467,15 @@ BOOL LLRadioCtrl::postBuild()
     {
         setLabel(value);
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLRadioCtrl::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLRadioCtrl::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // Grab focus preemptively, before button takes mousecapture
     if (hasTabStop() && getEnabled())
     {
-        focusFirstItem(FALSE, FALSE);
+        focusFirstItem(false, false);
     }
     else
     {
diff --git a/indra/llui/llradiogroup.h b/indra/llui/llradiogroup.h
index ca8883dce4..a24a7c86b2 100644
--- a/indra/llui/llradiogroup.h
+++ b/indra/llui/llradiogroup.h
@@ -64,15 +64,15 @@ public:
 
     virtual ~LLRadioGroup();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool handleKeyHere(KEY key, MASK mask);
 
-    void setIndexEnabled(S32 index, BOOL enabled);
+    void setIndexEnabled(S32 index, bool enabled);
     // return the index value of the selected item
     S32 getSelectedIndex() const { return mSelectedIndex; }
     // set the index value programatically
-    BOOL setSelectedIndex(S32 index, BOOL from_event = FALSE);
+    bool setSelectedIndex(S32 index, bool from_event = false);
     // foxus child by index if it can get focus
     void focusSelectedRadioBtn();
 
@@ -87,19 +87,19 @@ public:
     LLCtrlSelectionInterface* getSelectionInterface()   { return (LLCtrlSelectionInterface*)this; };
 
     // LLCtrlSelectionInterface functions
-    /*virtual*/ S32     getItemCount() const                { return mRadioButtons.size(); }
-    /*virtual*/ BOOL    getCanSelect() const                { return TRUE; }
-    /*virtual*/ BOOL    selectFirstItem()                   { return setSelectedIndex(0); }
-    /*virtual*/ BOOL    selectNthItem( S32 index )          { return setSelectedIndex(index); }
-    /*virtual*/ BOOL    selectItemRange( S32 first, S32 last ) { return setSelectedIndex(first); }
+    /*virtual*/ S32     getItemCount() const                { return static_cast<S32>(mRadioButtons.size()); }
+    /*virtual*/ bool    getCanSelect() const                { return true; }
+    /*virtual*/ bool    selectFirstItem()                   { return setSelectedIndex(0); }
+    /*virtual*/ bool    selectNthItem( S32 index )          { return setSelectedIndex(index); }
+    /*virtual*/ bool    selectItemRange( S32 first, S32 last ) { return setSelectedIndex(first); }
     /*virtual*/ S32     getFirstSelectedIndex() const       { return getSelectedIndex(); }
-    /*virtual*/ BOOL    setCurrentByID( const LLUUID& id );
+    /*virtual*/ bool    setCurrentByID( const LLUUID& id );
     /*virtual*/ LLUUID  getCurrentID() const;               // LLUUID::null if no items in menu
-    /*virtual*/ BOOL    setSelectedByValue(const LLSD& value, BOOL selected);
+    /*virtual*/ bool    setSelectedByValue(const LLSD& value, bool selected);
     /*virtual*/ LLSD    getSelectedValue();
-    /*virtual*/ BOOL    isSelected(const LLSD& value) const;
-    /*virtual*/ BOOL    operateOnSelection(EOperation op);
-    /*virtual*/ BOOL    operateOnAll(EOperation op);
+    /*virtual*/ bool    isSelected(const LLSD& value) const;
+    /*virtual*/ bool    operateOnSelection(EOperation op);
+    /*virtual*/ bool    operateOnAll(EOperation op);
 
 private:
     const LLFontGL*     mFont;
diff --git a/indra/llui/llresizebar.cpp b/indra/llui/llresizebar.cpp
index cec0734735..a022fd2853 100644
--- a/indra/llui/llresizebar.cpp
+++ b/indra/llui/llresizebar.cpp
@@ -89,9 +89,9 @@ LLResizeBar::LLResizeBar(const LLResizeBar::Params& p)
     }
 }
 
-BOOL LLResizeBar::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLResizeBar::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    if (!canResize()) return FALSE;
+    if (!canResize()) return false;
 
     // Route future Mouse messages here preemptively.  (Release on mouse up.)
     // No handler needed for focus lost since this clas has no state that depends on it.
@@ -101,31 +101,31 @@ BOOL LLResizeBar::handleMouseDown(S32 x, S32 y, MASK mask)
     mLastMouseScreenX = mDragLastScreenX;
     mLastMouseScreenY = mDragLastScreenY;
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLResizeBar::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLResizeBar::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     if( hasMouseCapture() )
     {
         // Release the mouse
         gFocusMgr.setMouseCapture( NULL );
-        handled = TRUE;
+        handled = true;
     }
     else
     {
-        handled = TRUE;
+        handled = true;
     }
     return handled;
 }
 
 
-BOOL LLResizeBar::handleHover(S32 x, S32 y, MASK mask)
+bool LLResizeBar::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     // We only handle the click if the click both started and ended within us
     if( hasMouseCapture() )
@@ -289,11 +289,11 @@ BOOL LLResizeBar::handleHover(S32 x, S32 y, MASK mask)
             }
         }
 
-        handled = TRUE;
+        handled = true;
     }
     else
     {
-        handled = TRUE;
+        handled = true;
     }
 
     if( handled && canResize() )
@@ -320,7 +320,7 @@ BOOL LLResizeBar::handleHover(S32 x, S32 y, MASK mask)
     return handled;
 } // end LLResizeBar::handleHover
 
-BOOL LLResizeBar::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLResizeBar::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     LLRect orig_rect = mResizingView->getRect();
     LLRect scaled_rect = orig_rect;
@@ -350,7 +350,7 @@ BOOL LLResizeBar::handleDoubleClick(S32 x, S32 y, MASK mask)
         mResizingView->setShape(scaled_rect, true);
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLResizeBar::setImagePanel(LLPanel * panelp)
diff --git a/indra/llui/llresizebar.h b/indra/llui/llresizebar.h
index 0fcecd1dbe..4b0f435834 100644
--- a/indra/llui/llresizebar.h
+++ b/indra/llui/llresizebar.h
@@ -53,14 +53,14 @@ protected:
 
 public:
 
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleDoubleClick(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleDoubleClick(S32 x, S32 y, MASK mask);
 
     void            setResizeLimits( S32 min_size, S32 max_size ) { mMinSize = min_size; mMaxSize = max_size; }
-    void            setEnableSnapping(BOOL enable) { mSnappingEnabled = enable; }
-    void            setAllowDoubleClickSnapping(BOOL allow) { mAllowDoubleClickSnapping = allow; }
+    void            setEnableSnapping(bool enable) { mSnappingEnabled = enable; }
+    void            setAllowDoubleClickSnapping(bool allow) { mAllowDoubleClickSnapping = allow; }
     bool            canResize() { return getEnabled() && mMaxSize > mMinSize; }
     void            setResizeListener(boost::function<void(void*)> listener) {mResizeListener = listener;}
     void            setImagePanel(LLPanel * panelp);
diff --git a/indra/llui/llresizehandle.cpp b/indra/llui/llresizehandle.cpp
index 29ae13b7ff..0b7bb55360 100644
--- a/indra/llui/llresizehandle.cpp
+++ b/indra/llui/llresizehandle.cpp
@@ -76,12 +76,12 @@ LLResizeHandle::~LLResizeHandle()
 }
 
 
-BOOL LLResizeHandle::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLResizeHandle::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if( pointInHandle(x, y) )
     {
-        handled = TRUE;
+        handled = true;
         // Route future Mouse messages here preemptively.  (Release on mouse up.)
         // No handler needed for focus lost since this clas has no state that depends on it.
         gFocusMgr.setMouseCapture( this );
@@ -95,28 +95,28 @@ BOOL LLResizeHandle::handleMouseDown(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLResizeHandle::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLResizeHandle::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     if( hasMouseCapture() )
     {
         // Release the mouse
         gFocusMgr.setMouseCapture( NULL );
-        handled = TRUE;
+        handled = true;
     }
     else if( pointInHandle(x, y) )
     {
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
 }
 
 
-BOOL LLResizeHandle::handleHover(S32 x, S32 y, MASK mask)
+bool LLResizeHandle::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     // We only handle the click if the click both started and ended within us
     if( hasMouseCapture() )
@@ -327,13 +327,13 @@ BOOL LLResizeHandle::handleHover(S32 x, S32 y, MASK mask)
             }
         }
 
-        handled = TRUE;
+        handled = true;
     }
     else // don't have mouse capture
     {
         if( pointInHandle( x, y ) )
         {
-            handled = TRUE;
+            handled = true;
         }
     }
 
@@ -366,7 +366,7 @@ void LLResizeHandle::draw()
 }
 
 
-BOOL LLResizeHandle::pointInHandle( S32 x, S32 y )
+bool LLResizeHandle::pointInHandle( S32 x, S32 y )
 {
     if( pointInView(x, y) )
     {
@@ -378,8 +378,8 @@ BOOL LLResizeHandle::pointInHandle( S32 x, S32 y )
         case LEFT_TOP:      return (x <= RESIZE_BORDER_WIDTH) || (y >= TOP_BORDER);
         case LEFT_BOTTOM:   return (x <= RESIZE_BORDER_WIDTH) || (y <= RESIZE_BORDER_WIDTH);
         case RIGHT_TOP:     return (x >= RIGHT_BORDER) || (y >= TOP_BORDER);
-        case RIGHT_BOTTOM:  return TRUE;
+        case RIGHT_BOTTOM:  return true;
         }
     }
-    return FALSE;
+    return false;
 }
diff --git a/indra/llui/llresizehandle.h b/indra/llui/llresizehandle.h
index d29894f607..9cc4123544 100644
--- a/indra/llui/llresizehandle.h
+++ b/indra/llui/llresizehandle.h
@@ -51,14 +51,14 @@ protected:
     friend class LLUICtrlFactory;
 public:
     virtual void    draw();
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
 
     void            setResizeLimits( S32 min_width, S32 min_height ) { mMinWidth = min_width; mMinHeight = min_height; }
 
 private:
-    BOOL            pointInHandle( S32 x, S32 y );
+    bool            pointInHandle( S32 x, S32 y );
 
     S32             mDragLastScreenX;
     S32             mDragLastScreenY;
diff --git a/indra/llui/llresmgr.cpp b/indra/llui/llresmgr.cpp
index a6a4a541f2..111c732548 100644
--- a/indra/llui/llresmgr.cpp
+++ b/indra/llui/llresmgr.cpp
@@ -51,14 +51,6 @@ char LLResMgr::getDecimalPoint() const
 {
     char decimal = localeconv()->decimal_point[0];
 
-#if LL_DARWIN
-    // On the Mac, locale support is broken before 10.4, which causes things to go all pear-shaped.
-    if(decimal == 0)
-    {
-        decimal = '.';
-    }
-#endif
-
     return decimal;
 }
 
@@ -66,14 +58,6 @@ char LLResMgr::getThousandsSeparator() const
 {
     char separator = localeconv()->thousands_sep[0];
 
-#if LL_DARWIN
-    // On the Mac, locale support is broken before 10.4, which causes things to go all pear-shaped.
-    if(separator == 0)
-    {
-        separator = ',';
-    }
-#endif
-
     return separator;
 }
 
@@ -81,14 +65,6 @@ char LLResMgr::getMonetaryDecimalPoint() const
 {
     char decimal = localeconv()->mon_decimal_point[0];
 
-#if LL_DARWIN
-    // On the Mac, locale support is broken before 10.4, which causes things to go all pear-shaped.
-    if(decimal == 0)
-    {
-        decimal = '.';
-    }
-#endif
-
     return decimal;
 }
 
@@ -96,14 +72,6 @@ char LLResMgr::getMonetaryThousandsSeparator() const
 {
     char separator = localeconv()->mon_thousands_sep[0];
 
-#if LL_DARWIN
-    // On the Mac, locale support is broken before 10.4, which causes things to go all pear-shaped.
-    if(separator == 0)
-    {
-        separator = ',';
-    }
-#endif
-
     return separator;
 }
 
@@ -116,29 +84,6 @@ std::string LLResMgr::getMonetaryString( S32 input ) const
     LLLocale locale(LLLocale::USER_LOCALE);
     struct lconv *conv = localeconv();
 
-#if LL_DARWIN
-    // On the Mac, locale support is broken before 10.4, which causes things to go all pear-shaped.
-    // Fake up a conv structure with some reasonable values for the fields this function uses.
-    struct lconv fakeconv;
-    char fake_neg[2] = "-";
-    char fake_mon_group[4] = "\x03\x03\x00"; // commas every 3 digits
-    if(conv->negative_sign[0] == 0) // Real locales all seem to have something here...
-    {
-        fakeconv = *conv;   // start with what's there.
-        switch(mLocale)
-        {
-            default:            // Unknown -- use the US defaults.
-            case LLLOCALE_USA:
-            case LLLOCALE_UK:   // UK ends up being the same as US for the items used here.
-                fakeconv.negative_sign = fake_neg;
-                fakeconv.mon_grouping = fake_mon_group;
-                fakeconv.n_sign_posn = 1; // negative sign before the string
-            break;
-        }
-        conv = &fakeconv;
-    }
-#endif
-
     char* negative_sign = conv->negative_sign;
     char separator = getMonetaryThousandsSeparator();
     char* grouping = conv->mon_grouping;
@@ -154,9 +99,9 @@ std::string LLResMgr::getMonetaryString( S32 input ) const
 
 
     // Note: we assume here that the currency symbol goes on the left. (Hey, it's Lindens! We can just decide.)
-    BOOL negative = (input < 0 );
-    BOOL negative_before = negative && (conv->n_sign_posn != 2);
-    BOOL negative_after = negative && (conv->n_sign_posn == 2);
+    bool negative = (input < 0 );
+    bool negative_before = negative && (conv->n_sign_posn != 2);
+    bool negative_after = negative && (conv->n_sign_posn == 2);
 
     std::string digits = llformat("%u", abs(input));
     if( !grouping || !grouping[0] )
@@ -195,7 +140,7 @@ std::string LLResMgr::getMonetaryString( S32 input ) const
     S32 output_pos = 0;
 
     cur_group = 0;
-    S32 pos = digits.size()-1;
+    S32 pos = static_cast<S32>(digits.size()) - 1;
     S32 count_within_group = 0;
     while( (pos >= 0) && (groupings[cur_group] >= 0) )
     {
diff --git a/indra/llui/llscrollbar.cpp b/indra/llui/llscrollbar.cpp
index fda4a750cd..9c73b1ba3f 100644
--- a/indra/llui/llscrollbar.cpp
+++ b/indra/llui/llscrollbar.cpp
@@ -73,7 +73,7 @@ LLScrollbar::LLScrollbar(const Params & p)
         mDocPos( p.doc_pos ),
         mPageSize( p.page_size ),
         mStepSize( p.step_size ),
-        mDocChanged(FALSE),
+        mDocChanged(false),
         mDragStartX( 0 ),
         mDragStartY( 0 ),
         mHoverGlowStrength(0.15f),
@@ -136,19 +136,19 @@ void LLScrollbar::setDocParams( S32 size, S32 pos )
 {
     mDocSize = size;
     setDocPos(pos);
-    mDocChanged = TRUE;
+    mDocChanged = true;
 
     updateThumbRect();
 }
 
 // returns true if document position really changed
-bool LLScrollbar::setDocPos(S32 pos, BOOL update_thumb)
+bool LLScrollbar::setDocPos(S32 pos, bool update_thumb)
 {
     pos = llclamp(pos, 0, getDocPosMax());
     if (pos != mDocPos)
     {
         mDocPos = pos;
-        mDocChanged = TRUE;
+        mDocChanged = true;
 
         if( mChangeCallback )
         {
@@ -170,7 +170,7 @@ void LLScrollbar::setDocSize(S32 size)
     {
         mDocSize = size;
         setDocPos(mDocPos);
-        mDocChanged = TRUE;
+        mDocChanged = true;
 
         updateThumbRect();
     }
@@ -182,7 +182,7 @@ void LLScrollbar::setPageSize( S32 page_size )
     {
         mPageSize = page_size;
         setDocPos(mDocPos);
-        mDocChanged = TRUE;
+        mDocChanged = true;
 
         updateThumbRect();
     }
@@ -238,10 +238,10 @@ void LLScrollbar::updateThumbRect()
     }
 }
 
-BOOL LLScrollbar::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLScrollbar::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // Check children first
-    BOOL handled_by_child = LLView::childrenHandleMouseDown(x, y, mask) != NULL;
+    bool handled_by_child = LLView::childrenHandleMouseDown(x, y, mask) != NULL;
     if( !handled_by_child )
     {
         if( mThumbRect.pointInRect(x,y) )
@@ -279,16 +279,16 @@ BOOL LLScrollbar::handleMouseDown(S32 x, S32 y, MASK mask)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLScrollbar::handleHover(S32 x, S32 y, MASK mask)
+bool LLScrollbar::handleHover(S32 x, S32 y, MASK mask)
 {
     // Note: we don't bother sending the event to the children (the arrow buttons)
     // because they'll capture the mouse whenever they need hover events.
 
-    BOOL handled = FALSE;
+    bool handled = false;
     if( hasMouseCapture() )
     {
         S32 height = getRect().getHeight();
@@ -329,7 +329,7 @@ BOOL LLScrollbar::handleHover(S32 x, S32 y, MASK mask)
                     S32 new_pos = llclamp( S32(variable_lines - ratio * variable_lines + 0.5f), 0, variable_lines );
                     // Note: we do not call updateThumbRect() here.  Instead we let the thumb and the document go slightly
                     // out of sync (less than a line's worth) to make the thumb feel responsive.
-                    changeLine( new_pos - mDocPos, FALSE );
+                    changeLine( new_pos - mDocPos, false );
                 }
             }
 
@@ -373,7 +373,7 @@ BOOL LLScrollbar::handleHover(S32 x, S32 y, MASK mask)
 
                     // Note: we do not call updateThumbRect() here.  Instead we let the thumb and the document go slightly
                     // out of sync (less than a line's worth) to make the thumb feel responsive.
-                    changeLine( new_pos - mDocPos, FALSE );
+                    changeLine( new_pos - mDocPos, false );
                 }
             }
 
@@ -382,7 +382,7 @@ BOOL LLScrollbar::handleHover(S32 x, S32 y, MASK mask)
 
         getWindow()->setCursor(UI_CURSOR_ARROW);
         LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (active)" << LL_ENDL;
-        handled = TRUE;
+        handled = true;
     }
     else
     {
@@ -394,31 +394,31 @@ BOOL LLScrollbar::handleHover(S32 x, S32 y, MASK mask)
     {
         getWindow()->setCursor(UI_CURSOR_ARROW);
         LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (inactive)"  << LL_ENDL;
-        handled = TRUE;
+        handled = true;
     }
 
-    mDocChanged = FALSE;
+    mDocChanged = false;
     return handled;
 } // end handleHover
 
 
-BOOL LLScrollbar::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLScrollbar::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
-    BOOL handled = changeLine( clicks * mStepSize, TRUE );
+    bool handled = changeLine( clicks * mStepSize, true );
     return handled;
 }
 
-BOOL LLScrollbar::handleScrollHWheel(S32 x, S32 y, S32 clicks)
+bool LLScrollbar::handleScrollHWheel(S32 x, S32 y, S32 clicks)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if (LLScrollbar::HORIZONTAL == mOrientation)
     {
-        handled = changeLine(clicks * mStepSize, TRUE);
+        handled = changeLine(clicks * mStepSize, true);
     }
     return handled;
 }
 
-BOOL LLScrollbar::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLScrollbar::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                     EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string &tooltip_msg)
 {
     // enable this to get drag and drop to control scrollbars
@@ -434,19 +434,19 @@ BOOL LLScrollbar::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
     //      : F32(pos - SCROLLBAR_SIZE) / usable_track_length;
     //  S32 new_pos = (VERTICAL == mOrientation) ? llclamp( S32(variable_lines - ratio * variable_lines + 0.5f), 0, variable_lines )
     //      : llclamp( S32(ratio * variable_lines + 0.5f), 0, variable_lines );
-    //  changeLine( new_pos - mDocPos, TRUE );
+    //  changeLine( new_pos - mDocPos, true );
     //}
-    //return TRUE;
-    return FALSE;
+    //return true;
+    return false;
 }
 
-BOOL LLScrollbar::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLScrollbar::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if( hasMouseCapture() )
     {
         gFocusMgr.setMouseCapture( NULL );
-        handled = TRUE;
+        handled = true;
     }
     else
     {
@@ -457,14 +457,14 @@ BOOL LLScrollbar::handleMouseUp(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLScrollbar::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLScrollbar::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     // just treat a double click as a second click
     return handleMouseDown(x, y, mask);
 }
 
 
-void LLScrollbar::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLScrollbar::reshape(S32 width, S32 height, bool called_from_parent)
 {
     if (width == getRect().getWidth() && height == getRect().getHeight()) return;
     LLView::reshape( width, height, called_from_parent );
@@ -495,14 +495,14 @@ void LLScrollbar::draw()
 
     if(mBGVisible)
     {
-        gl_rect_2d(getLocalRect(), mBGColor.get(), TRUE);
+        gl_rect_2d(getLocalRect(), mBGColor.get(), true);
     }
 
     S32 local_mouse_x;
     S32 local_mouse_y;
     LLUI::getInstance()->getMousePositionLocal(this, &local_mouse_x, &local_mouse_y);
-    BOOL other_captor = gFocusMgr.getMouseCapture() && gFocusMgr.getMouseCapture() != this;
-    BOOL hovered = getEnabled() && !other_captor && (hasMouseCapture() || mThumbRect.pointInRect(local_mouse_x, local_mouse_y));
+    bool other_captor = gFocusMgr.getMouseCapture() && gFocusMgr.getMouseCapture() != this;
+    bool hovered = getEnabled() && !other_captor && (hasMouseCapture() || mThumbRect.pointInRect(local_mouse_x, local_mouse_y));
     if (hovered)
     {
         mCurGlowStrength = lerp(mCurGlowStrength, mHoverGlowStrength, LLSmoothInterpolation::getInterpolant(0.05f));
@@ -519,9 +519,9 @@ void LLScrollbar::draw()
         gl_rect_2d(mOrientation == HORIZONTAL ? mThickness : 0,
         mOrientation == VERTICAL ? getRect().getHeight() - 2 * mThickness : getRect().getHeight(),
         mOrientation == HORIZONTAL ? getRect().getWidth() - 2 * mThickness : getRect().getWidth(),
-        mOrientation == VERTICAL ? mThickness : 0, mTrackColor.get(), TRUE);
+        mOrientation == VERTICAL ? mThickness : 0, mTrackColor.get(), true);
 
-        gl_rect_2d(mThumbRect, mThumbColor.get(), TRUE);
+        gl_rect_2d(mThumbRect, mThumbColor.get(), true);
 
     }
     else
@@ -580,7 +580,7 @@ void LLScrollbar::draw()
 } // end draw
 
 
-bool LLScrollbar::changeLine( S32 delta, BOOL update_thumb )
+bool LLScrollbar::changeLine( S32 delta, bool update_thumb )
 {
     return setDocPos(mDocPos + delta, update_thumb);
 }
@@ -591,35 +591,35 @@ void LLScrollbar::setValue(const LLSD& value)
 }
 
 
-BOOL LLScrollbar::handleKeyHere(KEY key, MASK mask)
+bool LLScrollbar::handleKeyHere(KEY key, MASK mask)
 {
     if (getDocPosMax() == 0 && !getVisible())
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL handled = FALSE;
+    bool handled = false;
 
     switch( key )
     {
     case KEY_HOME:
         setDocPos( 0 );
-        handled = TRUE;
+        handled = true;
         break;
 
     case KEY_END:
         setDocPos( getDocPosMax() );
-        handled = TRUE;
+        handled = true;
         break;
 
     case KEY_DOWN:
         setDocPos( getDocPos() + mStepSize );
-        handled = TRUE;
+        handled = true;
         break;
 
     case KEY_UP:
         setDocPos( getDocPos() - mStepSize );
-        handled = TRUE;
+        handled = true;
         break;
 
     case KEY_PAGE_DOWN:
@@ -638,7 +638,7 @@ void LLScrollbar::pageUp(S32 overlap)
 {
     if (mDocSize > mPageSize)
     {
-        changeLine( -(mPageSize - overlap), TRUE );
+        changeLine( -(mPageSize - overlap), true );
     }
 }
 
@@ -646,18 +646,18 @@ void LLScrollbar::pageDown(S32 overlap)
 {
     if (mDocSize > mPageSize)
     {
-        changeLine( mPageSize - overlap, TRUE );
+        changeLine( mPageSize - overlap, true );
     }
 }
 
 void LLScrollbar::onLineUpBtnPressed( const LLSD& data )
 {
-    changeLine( -mStepSize, TRUE );
+    changeLine( -mStepSize, true );
 }
 
 void LLScrollbar::onLineDownBtnPressed( const LLSD& data )
 {
-    changeLine( mStepSize, TRUE );
+    changeLine( mStepSize, true );
 }
 
 void LLScrollbar::setThickness(S32 thickness)
diff --git a/indra/llui/llscrollbar.h b/indra/llui/llscrollbar.h
index bbfc3a0340..7b935aa51b 100644
--- a/indra/llui/llscrollbar.h
+++ b/indra/llui/llscrollbar.h
@@ -82,17 +82,17 @@ public:
     virtual void setValue(const LLSD& value);
 
     // Overrides from LLView
-    virtual BOOL    handleKeyHere(KEY key, MASK mask);
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleDoubleClick(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleScrollWheel(S32 x, S32 y, S32 clicks);
-    virtual BOOL    handleScrollHWheel(S32 x, S32 y, S32 clicks);
-    virtual BOOL    handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    virtual bool    handleKeyHere(KEY key, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleDoubleClick(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleScrollWheel(S32 x, S32 y, S32 clicks);
+    virtual bool    handleScrollHWheel(S32 x, S32 y, S32 clicks);
+    virtual bool    handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
         EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string &tooltip_msg);
 
-    virtual void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual void    reshape(S32 width, S32 height, bool called_from_parent = true);
 
     virtual void    draw();
 
@@ -102,7 +102,7 @@ public:
 
     // How many "lines" the "document" has scrolled.
     // 0 <= DocPos <= DocSize - DocVisibile
-    bool                setDocPos( S32 pos, BOOL update_thumb = TRUE );
+    bool                setDocPos( S32 pos, bool update_thumb = true );
     S32                 getDocPos() const       { return mDocPos; }
 
     bool                isAtBeginning() const;
@@ -129,7 +129,7 @@ public:
 
 private:
     void                updateThumbRect();
-    bool                changeLine(S32 delta, BOOL update_thumb );
+    bool                changeLine(S32 delta, bool update_thumb );
 
     callback_t          mChangeCallback;
 
@@ -138,7 +138,7 @@ private:
     S32                 mDocPos;        // Position within the doc that the scrollbar is modeling, in "lines" (user size)
     S32                 mPageSize;      // Maximum number of lines that can be seen at one time.
     S32                 mStepSize;
-    BOOL                mDocChanged;
+    bool                mDocChanged;
 
     LLRect              mThumbRect;
     S32                 mDragStartX;
diff --git a/indra/llui/llscrollcontainer.cpp b/indra/llui/llscrollcontainer.cpp
index d0b28e8f22..df99c4f636 100644
--- a/indra/llui/llscrollcontainer.cpp
+++ b/indra/llui/llscrollcontainer.cpp
@@ -82,7 +82,7 @@ LLScrollContainer::Params::Params()
 // Default constructor
 LLScrollContainer::LLScrollContainer(const LLScrollContainer::Params& p)
 :   LLUICtrl(p),
-    mAutoScrolling( FALSE ),
+    mAutoScrolling( false ),
     mAutoScrollRate( 0.f ),
     mBackgroundColor(p.bg_color()),
     mIsOpaque(p.is_opaque),
@@ -180,7 +180,7 @@ void LLScrollContainer::scrollVertical( S32 new_pos )
 
 // LLView functionality
 void LLScrollContainer::reshape(S32 width, S32 height,
-                                        BOOL called_from_parent)
+                                        bool called_from_parent)
 {
     LLUICtrl::reshape( width, height, called_from_parent );
 
@@ -193,8 +193,8 @@ void LLScrollContainer::reshape(S32 width, S32 height,
 
         S32 visible_width = 0;
         S32 visible_height = 0;
-        BOOL show_v_scrollbar = FALSE;
-        BOOL show_h_scrollbar = FALSE;
+        bool show_v_scrollbar = false;
+        bool show_h_scrollbar = false;
         calcVisibleSize( &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
 
         mScrollbar[VERTICAL]->setDocSize( scrolled_rect.getHeight() );
@@ -207,7 +207,7 @@ void LLScrollContainer::reshape(S32 width, S32 height,
 }
 
 // virtual
-BOOL LLScrollContainer::handleKeyHere(KEY key, MASK mask)
+bool LLScrollContainer::handleKeyHere(KEY key, MASK mask)
 {
     if (mIgnoreArrowKeys)
     {
@@ -221,7 +221,7 @@ BOOL LLScrollContainer::handleKeyHere(KEY key, MASK mask)
         case KEY_PAGE_DOWN:
         case KEY_HOME:
         case KEY_END:
-            return FALSE;
+            return false;
         default:
             break;
         }
@@ -234,35 +234,35 @@ BOOL LLScrollContainer::handleKeyHere(KEY key, MASK mask)
     // call LLScrollContainer::handleKeyHere in turn
     if (mScrolledView && mScrolledView->handleKeyHere(key, mask))
     {
-        return TRUE;
+        return true;
     }
     for( S32 i = 0; i < ORIENTATION_COUNT; i++ )
     {
         if( mScrollbar[i]->handleKeyHere(key, mask) )
         {
             updateScroll();
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLScrollContainer::handleUnicodeCharHere(llwchar uni_char)
+bool LLScrollContainer::handleUnicodeCharHere(llwchar uni_char)
 {
     if (mScrolledView && mScrolledView->handleUnicodeCharHere(uni_char))
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLScrollContainer::handleScrollWheel( S32 x, S32 y, S32 clicks )
+bool LLScrollContainer::handleScrollWheel( S32 x, S32 y, S32 clicks )
 {
     // Give event to my child views - they may have scroll bars
     // (Bad UI design, but technically possible.)
     if (LLUICtrl::handleScrollWheel(x,y,clicks))
-        return TRUE;
+        return true;
 
     // When the vertical scrollbar is visible, scroll wheel
     // only affects vertical scrolling.  It's confusing to have
@@ -278,7 +278,7 @@ BOOL LLScrollContainer::handleScrollWheel( S32 x, S32 y, S32 clicks )
             updateScroll();
         }
         // Always eat the event
-        return TRUE;
+        return true;
     }
 
     LLScrollbar* horizontal = mScrollbar[HORIZONTAL];
@@ -289,16 +289,16 @@ BOOL LLScrollContainer::handleScrollWheel( S32 x, S32 y, S32 clicks )
         && horizontal->handleScrollWheel( 0, 0, clicks ) )
     {
         updateScroll();
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLScrollContainer::handleScrollHWheel(S32 x, S32 y, S32 clicks)
+bool LLScrollContainer::handleScrollHWheel(S32 x, S32 y, S32 clicks)
 {
     if (LLUICtrl::handleScrollHWheel(x,y,clicks))
     {
-        return TRUE;
+        return true;
     }
 
     LLScrollbar* horizontal = mScrollbar[HORIZONTAL];
@@ -307,14 +307,14 @@ BOOL LLScrollContainer::handleScrollHWheel(S32 x, S32 y, S32 clicks)
         && horizontal->handleScrollHWheel( 0, 0, clicks ) )
     {
         updateScroll();
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLScrollContainer::handleDragAndDrop(S32 x, S32 y, MASK mask,
-                                                  BOOL drop,
+bool LLScrollContainer::handleDragAndDrop(S32 x, S32 y, MASK mask,
+                                                  bool drop,
                                                   EDragAndDropType cargo_type,
                                                   void* cargo_data,
                                                   EAcceptance* accept,
@@ -322,7 +322,7 @@ BOOL LLScrollContainer::handleDragAndDrop(S32 x, S32 y, MASK mask,
 {
     // Scroll folder view if needed.  Never accepts a drag or drop.
     *accept = ACCEPT_NO;
-    BOOL handled = autoScroll(x, y);
+    bool handled = autoScroll(x, y);
 
     if( !handled )
     {
@@ -330,7 +330,7 @@ BOOL LLScrollContainer::handleDragAndDrop(S32 x, S32 y, MASK mask,
                                             cargo_data, accept, tooltip_msg) != NULL;
     }
 
-    return TRUE;
+    return true;
 }
 
 bool LLScrollContainer::canAutoScroll(S32 x, S32 y)
@@ -387,7 +387,7 @@ bool LLScrollContainer::autoScroll(S32 x, S32 y, bool do_scroll)
                 if (do_scroll)
                 {
                     mScrollbar[HORIZONTAL]->setDocPos(mScrollbar[HORIZONTAL]->getDocPos() - auto_scroll_speed);
-                    mAutoScrolling = TRUE;
+                    mAutoScrolling = true;
                 }
                 scrolling = true;
             }
@@ -399,7 +399,7 @@ bool LLScrollContainer::autoScroll(S32 x, S32 y, bool do_scroll)
                 if (do_scroll)
                 {
                     mScrollbar[HORIZONTAL]->setDocPos(mScrollbar[HORIZONTAL]->getDocPos() + auto_scroll_speed);
-                    mAutoScrolling = TRUE;
+                    mAutoScrolling = true;
                 }
                 scrolling = true;
             }
@@ -413,7 +413,7 @@ bool LLScrollContainer::autoScroll(S32 x, S32 y, bool do_scroll)
                 if (do_scroll)
                 {
                     mScrollbar[VERTICAL]->setDocPos(mScrollbar[VERTICAL]->getDocPos() + auto_scroll_speed);
-                    mAutoScrolling = TRUE;
+                    mAutoScrolling = true;
                 }
                 scrolling = true;
             }
@@ -425,7 +425,7 @@ bool LLScrollContainer::autoScroll(S32 x, S32 y, bool do_scroll)
                 if (do_scroll)
                 {
                     mScrollbar[VERTICAL]->setDocPos(mScrollbar[VERTICAL]->getDocPos() - auto_scroll_speed);
-                    mAutoScrolling = TRUE;
+                    mAutoScrolling = true;
                 }
                 scrolling = true;
             }
@@ -434,7 +434,7 @@ bool LLScrollContainer::autoScroll(S32 x, S32 y, bool do_scroll)
     return scrolling;
 }
 
-void LLScrollContainer::calcVisibleSize( S32 *visible_width, S32 *visible_height, BOOL* show_h_scrollbar, BOOL* show_v_scrollbar ) const
+void LLScrollContainer::calcVisibleSize( S32 *visible_width, S32 *visible_height, bool* show_h_scrollbar, bool* show_v_scrollbar ) const
 {
     const LLRect& doc_rect = getScrolledViewRect();
     static LLUICachedControl<S32> scrollbar_size_control ("UIScrollbarSize", 0);
@@ -447,8 +447,8 @@ void LLScrollContainer::calcVisibleSize( S32 *visible_width, S32 *visible_height
     *visible_width = getRect().getWidth() - 2 * border_width;
     *visible_height = getRect().getHeight() - 2 * border_width;
 
-    *show_v_scrollbar = FALSE;
-    *show_h_scrollbar = FALSE;
+    *show_v_scrollbar = false;
+    *show_h_scrollbar = false;
 
     if (!mHideScrollbar)
     {
@@ -456,12 +456,12 @@ void LLScrollContainer::calcVisibleSize( S32 *visible_width, S32 *visible_height
         // the display of sliders.
         if ((doc_height - *visible_height) > 1)
         {
-            *show_v_scrollbar = TRUE;
+            *show_v_scrollbar = true;
             *visible_width -= scrollbar_size;
         }
         if ((doc_width - *visible_width) > 1)
         {
-            *show_h_scrollbar = TRUE;
+            *show_h_scrollbar = true;
             *visible_height -= scrollbar_size;
             // Note: Do *not* recompute *show_v_scrollbar here because with
             // The view inside the scroll container should not be extended
@@ -470,7 +470,7 @@ void LLScrollContainer::calcVisibleSize( S32 *visible_width, S32 *visible_height
 
             if( !*show_v_scrollbar && ((doc_height - *visible_height) > 1) )
             {
-                *show_v_scrollbar = TRUE;
+                *show_v_scrollbar = true;
                 *visible_width -= scrollbar_size;
             }
         }
@@ -494,7 +494,7 @@ void LLScrollContainer::draw()
         mAutoScrollRate = mMinAutoScrollRate;
     }
     // clear this flag to be set on next call to autoScroll
-    mAutoScrolling = FALSE;
+    mAutoScrolling = false;
 
     // auto-focus when scrollbar active
     // this allows us to capture user intent (i.e. stop automatically scrolling the view/etc)
@@ -527,8 +527,8 @@ void LLScrollContainer::draw()
             {
                 S32 visible_width = 0;
                 S32 visible_height = 0;
-                BOOL show_v_scrollbar = FALSE;
-                BOOL show_h_scrollbar = FALSE;
+                bool show_v_scrollbar = false;
+                bool show_h_scrollbar = false;
                 calcVisibleSize( &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
 
                 LLLocalClipRect clip(LLRect(mInnerRect.mLeft,
@@ -599,8 +599,8 @@ void LLScrollContainer::updateScroll()
     S32 doc_height = doc_rect.getHeight();
     S32 visible_width = 0;
     S32 visible_height = 0;
-    BOOL show_v_scrollbar = FALSE;
-    BOOL show_h_scrollbar = FALSE;
+    bool show_v_scrollbar = false;
+    bool show_h_scrollbar = false;
     calcVisibleSize( &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
 
     S32 border_width = getBorderWidth();
@@ -612,14 +612,14 @@ void LLScrollContainer::updateScroll()
         }
 
         scrollVertical( mScrollbar[VERTICAL]->getDocPos() );
-        mScrollbar[VERTICAL]->setVisible( TRUE );
+        mScrollbar[VERTICAL]->setVisible( true );
 
         S32 v_scrollbar_height = visible_height;
         if( !show_h_scrollbar && mReserveScrollCorner )
         {
             v_scrollbar_height -= scrollbar_size;
         }
-        mScrollbar[VERTICAL]->reshape( scrollbar_size, v_scrollbar_height, TRUE );
+        mScrollbar[VERTICAL]->reshape( scrollbar_size, v_scrollbar_height, true );
 
         // Make room for the horizontal scrollbar (or not)
         S32 v_scrollbar_offset = 0;
@@ -635,7 +635,7 @@ void LLScrollContainer::updateScroll()
     {
         mScrolledView->translate( 0, getRect().getHeight() - border_width - doc_rect.mTop );
 
-        mScrollbar[VERTICAL]->setVisible( FALSE );
+        mScrollbar[VERTICAL]->setVisible( false );
         mScrollbar[VERTICAL]->setDocPos( 0 );
     }
 
@@ -651,19 +651,19 @@ void LLScrollContainer::updateScroll()
             scrollHorizontal( mScrollbar[HORIZONTAL]->getDocPos() );
         }
 
-        mScrollbar[HORIZONTAL]->setVisible( TRUE );
+        mScrollbar[HORIZONTAL]->setVisible( true );
         S32 h_scrollbar_width = visible_width;
         if( !show_v_scrollbar && mReserveScrollCorner )
         {
             h_scrollbar_width -= scrollbar_size;
         }
-        mScrollbar[HORIZONTAL]->reshape( h_scrollbar_width, scrollbar_size, TRUE );
+        mScrollbar[HORIZONTAL]->reshape( h_scrollbar_width, scrollbar_size, true );
     }
     else
     {
         mScrolledView->translate( border_width - doc_rect.mLeft, 0 );
 
-        mScrollbar[HORIZONTAL]->setVisible( FALSE );
+        mScrollbar[HORIZONTAL]->setVisible( false );
         mScrollbar[HORIZONTAL]->setDocPos( 0 );
     }
 
@@ -674,7 +674,7 @@ void LLScrollContainer::updateScroll()
     mScrollbar[VERTICAL]->setPageSize( visible_height );
 } // end updateScroll
 
-void LLScrollContainer::setBorderVisible(BOOL b)
+void LLScrollContainer::setBorderVisible(bool b)
 {
     mBorder->setVisible( b );
     // Recompute inner rect, as border visibility changes it
@@ -697,8 +697,8 @@ LLRect LLScrollContainer::getContentWindowRect()
     LLRect scroller_view_rect;
     S32 visible_width = 0;
     S32 visible_height = 0;
-    BOOL show_h_scrollbar = FALSE;
-    BOOL show_v_scrollbar = FALSE;
+    bool show_h_scrollbar = false;
+    bool show_v_scrollbar = false;
     calcVisibleSize( &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
     S32 border_width = getBorderWidth();
     scroller_view_rect.setOriginAndSize(border_width,
diff --git a/indra/llui/llscrollcontainer.h b/indra/llui/llscrollcontainer.h
index 1295406a3d..859750d71c 100644
--- a/indra/llui/llscrollcontainer.h
+++ b/indra/llui/llscrollcontainer.h
@@ -86,12 +86,12 @@ public:
 
     virtual void    setValue(const LLSD& value) { mInnerRect.setValue(value); }
 
-    void            setBorderVisible( BOOL b );
+    void            setBorderVisible( bool b );
 
     void            scrollToShowRect( const LLRect& rect, const LLRect& constraint);
     void            scrollToShowRect( const LLRect& rect) { scrollToShowRect(rect, LLRect(0, mInnerRect.getHeight(), mInnerRect.getWidth(), 0)); }
 
-    void            setReserveScrollCorner( BOOL b ) { mReserveScrollCorner = b; }
+    void            setReserveScrollCorner( bool b ) { mReserveScrollCorner = b; }
     LLRect          getVisibleContentRect();
     LLRect          getContentWindowRect();
     virtual const LLRect    getScrolledViewRect() const { return mScrolledView ? mScrolledView->getRect() : LLRect::null; }
@@ -106,12 +106,12 @@ public:
     S32             getBorderWidth() const;
 
     // LLView functionality
-    virtual void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
-    virtual BOOL    handleKeyHere(KEY key, MASK mask);
-    virtual BOOL    handleUnicodeCharHere(llwchar uni_char);
-    virtual BOOL    handleScrollWheel( S32 x, S32 y, S32 clicks );
-    virtual BOOL    handleScrollHWheel( S32 x, S32 y, S32 clicks );
-    virtual BOOL    handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    virtual void    reshape(S32 width, S32 height, bool called_from_parent = true);
+    virtual bool    handleKeyHere(KEY key, MASK mask);
+    virtual bool    handleUnicodeCharHere(llwchar uni_char);
+    virtual bool    handleScrollWheel( S32 x, S32 y, S32 clicks );
+    virtual bool    handleScrollHWheel( S32 x, S32 y, S32 clicks );
+    virtual bool    handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                    EDragAndDropType cargo_type,
                                    void* cargo_data,
                                    EAcceptance* accept,
@@ -135,16 +135,16 @@ private:
     virtual void scrollVertical( S32 new_pos );
     void updateScroll();
     bool autoScroll(S32 x, S32 y, bool do_scroll);
-    void calcVisibleSize( S32 *visible_width, S32 *visible_height, BOOL* show_h_scrollbar, BOOL* show_v_scrollbar ) const;
+    void calcVisibleSize( S32 *visible_width, S32 *visible_height, bool* show_h_scrollbar, bool* show_v_scrollbar ) const;
 
     LLScrollbar* mScrollbar[ORIENTATION_COUNT];
     S32         mSize;
-    BOOL        mIsOpaque;
+    bool        mIsOpaque;
     LLUIColor   mBackgroundColor;
     LLRect      mInnerRect;
     LLViewBorder* mBorder;
-    BOOL        mReserveScrollCorner;
-    BOOL        mAutoScrolling;
+    bool        mReserveScrollCorner;
+    bool        mAutoScrolling;
     F32         mAutoScrollRate;
     F32         mMinAutoScrollRate;
     F32         mMaxAutoScrollRate;
diff --git a/indra/llui/llscrollingpanellist.cpp b/indra/llui/llscrollingpanellist.cpp
index b07f22d7ef..b158d7b1b7 100644
--- a/indra/llui/llscrollingpanellist.cpp
+++ b/indra/llui/llscrollingpanellist.cpp
@@ -114,7 +114,7 @@ void LLScrollingPanelList::removePanel( U32 panel_index )
     rearrange();
 }
 
-void LLScrollingPanelList::updatePanels(BOOL allow_modify)
+void LLScrollingPanelList::updatePanels(bool allow_modify)
 {
     for (std::deque<LLScrollingPanel*>::iterator iter = mPanelList.begin();
          iter != mPanelList.end(); ++iter)
@@ -224,7 +224,7 @@ void LLScrollingPanelList::updatePanelVisiblilty()
             local_rect.getWidth(), local_rect.getHeight(),
             &screen_rect.mRight, &screen_rect.mTop );
 
-        BOOL intersects =
+        bool intersects =
             ( (screen_rect.mRight > parent_screen_rect.mLeft) && (screen_rect.mLeft < parent_screen_rect.mRight) ) &&
             ( (screen_rect.mTop > parent_screen_rect.mBottom) && (screen_rect.mBottom < parent_screen_rect.mTop) );
 
diff --git a/indra/llui/llscrollingpanellist.h b/indra/llui/llscrollingpanellist.h
index ad717a455b..309ce4592d 100644
--- a/indra/llui/llscrollingpanellist.h
+++ b/indra/llui/llscrollingpanellist.h
@@ -40,7 +40,7 @@ class LLScrollingPanel : public LLPanel
 {
 public:
     LLScrollingPanel(const LLPanel::Params& params) : LLPanel(params) {}
-    virtual void updatePanel(BOOL allow_modify) = 0;
+    virtual void updatePanel(bool allow_modify) = 0;
 };
 
 
@@ -74,7 +74,7 @@ public:
     S32                 addPanel(LLScrollingPanel* panel, bool back = false);
     void                removePanel(LLScrollingPanel* panel);
     void                removePanel(U32 panel_index);
-    void                updatePanels(BOOL allow_modify);
+    void                updatePanels(bool allow_modify);
     void                rearrange();
 
     const panel_list_t& getPanelList() const { return mPanelList; }
diff --git a/indra/llui/llscrolllistcell.cpp b/indra/llui/llscrolllistcell.cpp
index 7fcb91bba3..403879646d 100644
--- a/indra/llui/llscrolllistcell.cpp
+++ b/indra/llui/llscrolllistcell.cpp
@@ -281,9 +281,9 @@ void LLScrollListText::highlightText(S32 offset, S32 num_chars)
 }
 
 //virtual
-BOOL LLScrollListText::isText() const
+bool LLScrollListText::isText() const
 {
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -298,7 +298,7 @@ const std::string &LLScrollListText::getToolTip() const
 }
 
 // virtual
-BOOL LLScrollListText::needsToolTip() const
+bool LLScrollListText::needsToolTip() const
 {
     // If base class has a tooltip, return that
     if (LLScrollListCell::needsToolTip())
@@ -309,7 +309,7 @@ BOOL LLScrollListText::needsToolTip() const
 }
 
 //virtual
-BOOL LLScrollListText::getVisible() const
+bool LLScrollListText::getVisible() const
 {
     return mVisible;
 }
@@ -335,7 +335,7 @@ S32 LLScrollListText::getContentWidth() const
 void LLScrollListText::setColor(const LLColor4& color)
 {
     mColor = color;
-    mUseColor = TRUE;
+    mUseColor = true;
 }
 
 void LLScrollListText::setText(const LLStringExplicit& text)
@@ -436,7 +436,7 @@ void LLScrollListText::draw(const LLColor4& color, const LLColor4& highlight_col
                     string_chars,
                     getTextWidth(),
                     &right_x,
-                    TRUE);
+                    true);
 }
 
 //
@@ -480,14 +480,14 @@ void LLScrollListCheck::draw(const LLColor4& color, const LLColor4& highlight_co
     mCheckBox->draw();
 }
 
-BOOL LLScrollListCheck::handleClick()
+bool LLScrollListCheck::handleClick()
 {
     if (mCheckBox->getEnabled())
     {
         mCheckBox->toggle();
     }
     // don't change selection when clicking on embedded checkbox
-    return TRUE;
+    return true;
 }
 
 /*virtual*/
@@ -509,7 +509,7 @@ void LLScrollListCheck::onCommit()
 }
 
 /*virtual*/
-void LLScrollListCheck::setEnabled(BOOL enable)
+void LLScrollListCheck::setEnabled(bool enable)
 {
     mCheckBox->setEnabled(enable);
 }
@@ -660,7 +660,7 @@ void LLScrollListIconText::draw(const LLColor4& color, const LLColor4& highlight
         string_chars,
         getTextWidth(),
         &right_x,
-        TRUE);
+        true);
 
     if (mIcon)
     {
diff --git a/indra/llui/llscrolllistcell.h b/indra/llui/llscrolllistcell.h
index ea2327961a..c5d785ae52 100644
--- a/indra/llui/llscrolllistcell.h
+++ b/indra/llui/llscrolllistcell.h
@@ -106,16 +106,16 @@ public:
     virtual void            setAltValue(const LLSD& value) { }
     virtual const std::string &getToolTip() const { return mToolTip; }
     virtual void            setToolTip(const std::string &str) { mToolTip = str; }
-    virtual BOOL            getVisible() const { return TRUE; }
+    virtual bool            getVisible() const { return true; }
     virtual void            setWidth(S32 width) { mWidth = width; }
     virtual void            highlightText(S32 offset, S32 num_chars) {}
-    virtual BOOL            isText() const { return FALSE; }
-    virtual BOOL            needsToolTip() const { return ! mToolTip.empty(); }
+    virtual bool            isText() const { return false; }
+    virtual bool            needsToolTip() const { return ! mToolTip.empty(); }
     virtual void            setColor(const LLColor4&) {}
     virtual void            onCommit() {};
 
-    virtual BOOL            handleClick() { return FALSE; }
-    virtual void            setEnabled(BOOL enable) { }
+    virtual bool            handleClick() { return false; }
+    virtual void            setEnabled(bool enable) { }
 
 private:
     S32 mWidth;
@@ -146,13 +146,13 @@ public:
     /*virtual*/ void    setAltValue(const LLSD& value);
     /*virtual*/ const LLSD getValue() const;
     /*virtual*/ const LLSD getAltValue() const;
-    /*virtual*/ BOOL    getVisible() const;
+    /*virtual*/ bool    getVisible() const;
     /*virtual*/ void    highlightText(S32 offset, S32 num_chars);
 
     /*virtual*/ void    setColor(const LLColor4&);
-    /*virtual*/ BOOL    isText() const;
+    /*virtual*/ bool    isText() const;
     /*virtual*/ const std::string & getToolTip() const;
-    /*virtual*/ BOOL    needsToolTip() const;
+    /*virtual*/ bool    needsToolTip() const;
 
     S32             getTextWidth() const { return mTextWidth;}
     void            setTextWidth(S32 value) { mTextWidth = value;}
@@ -171,7 +171,7 @@ protected:
     LLColor4        mHighlightColor;
     U8              mUseColor;
     LLFontGL::HAlign mFontAlignment;
-    BOOL            mVisible;
+    bool            mVisible;
     S32             mHighlightCount;
     S32             mHighlightOffset;
 
@@ -235,8 +235,8 @@ public:
     /*virtual*/ void    setValue(const LLSD& value);
     /*virtual*/ void    onCommit();
 
-    /*virtual*/ BOOL    handleClick();
-    /*virtual*/ void    setEnabled(BOOL enable);
+    /*virtual*/ bool    handleClick();
+    /*virtual*/ void    setEnabled(bool enable);
 
     LLCheckBoxCtrl* getCheckBox()               { return mCheckBox; }
 
diff --git a/indra/llui/llscrolllistcolumn.cpp b/indra/llui/llscrolllistcolumn.cpp
index 2ef19d1b5a..a4510d1fc2 100644
--- a/indra/llui/llscrolllistcolumn.cpp
+++ b/indra/llui/llscrolllistcolumn.cpp
@@ -52,7 +52,7 @@ LLScrollColumnHeader::Params::Params()
 LLScrollColumnHeader::LLScrollColumnHeader(const LLScrollColumnHeader::Params& p)
 :   LLButton(p), // use combobox params to steal images
     mColumn(p.column),
-    mHasResizableElement(FALSE)
+    mHasResizableElement(false)
 {
     setClickedCallback(boost::bind(&LLScrollColumnHeader::onClick, this, _2));
 
@@ -74,12 +74,12 @@ LLScrollColumnHeader::~LLScrollColumnHeader()
 void LLScrollColumnHeader::draw()
 {
     std::string sort_column = mColumn->mParentCtrl->getSortColumnName();
-    BOOL draw_arrow = !mColumn->mLabel.empty()
+    bool draw_arrow = !mColumn->mLabel.empty()
             && mColumn->mParentCtrl->isSorted()
             // check for indirect sorting column as well as column's sorting name
             && (sort_column == mColumn->mSortingColumn || sort_column == mColumn->mName);
 
-    BOOL is_ascending = mColumn->mParentCtrl->getSortAscending();
+    bool is_ascending = mColumn->mParentCtrl->getSortAscending();
     if (draw_arrow)
     {
         setImageOverlay(is_ascending ? "up_arrow.tga" : "down_arrow.tga", LLFontGL::RIGHT, LLColor4::white);
@@ -93,7 +93,7 @@ void LLScrollColumnHeader::draw()
     LLButton::draw();
 }
 
-BOOL LLScrollColumnHeader::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLScrollColumnHeader::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if (canResize() && mResizeBar->getRect().pointInRect(x, y))
     {
@@ -107,7 +107,7 @@ BOOL LLScrollColumnHeader::handleDoubleClick(S32 x, S32 y, MASK mask)
     {
         onClick(LLSD());
     }
-    return TRUE;
+    return true;
 }
 
 void LLScrollColumnHeader::onClick(const LLSD& data)
@@ -241,7 +241,7 @@ void LLScrollColumnHeader::handleReshape(const LLRect& new_rect, bool by_user)
     }
 }
 
-void LLScrollColumnHeader::setHasResizableElement(BOOL resizable)
+void LLScrollColumnHeader::setHasResizableElement(bool resizable)
 {
     if (mHasResizableElement != resizable)
     {
@@ -270,7 +270,7 @@ void LLScrollColumnHeader::updateResizeBars()
     {
         LLScrollListColumn* columnp = mColumn->mParentCtrl->getColumn(col);
         if (!columnp || !columnp->mHeader) continue;
-        BOOL enable = num_resizable_columns >= 2 && num_resizers_enabled < (num_resizable_columns - 1) && columnp->mHeader->canResize();
+        bool enable = num_resizable_columns >= 2 && num_resizers_enabled < (num_resizable_columns - 1) && columnp->mHeader->canResize();
         columnp->mHeader->enableResizeBar(enable);
         if (enable)
         {
@@ -279,12 +279,12 @@ void LLScrollColumnHeader::updateResizeBars()
     }
 }
 
-void LLScrollColumnHeader::enableResizeBar(BOOL enable)
+void LLScrollColumnHeader::enableResizeBar(bool enable)
 {
     mResizeBar->setEnabled(enable);
 }
 
-BOOL LLScrollColumnHeader::canResize()
+bool LLScrollColumnHeader::canResize()
 {
     return getVisible() && (mHasResizableElement || mColumn->mDynamicWidth);
 }
diff --git a/indra/llui/llscrolllistcolumn.h b/indra/llui/llscrolllistcolumn.h
index d535d96c76..72dfcdafe0 100644
--- a/indra/llui/llscrolllistcolumn.h
+++ b/indra/llui/llscrolllistcolumn.h
@@ -50,23 +50,23 @@ public:
     ~LLScrollColumnHeader();
 
     /*virtual*/ void draw();
-    /*virtual*/ BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleDoubleClick(S32 x, S32 y, MASK mask);
 
     /*virtual*/ LLView* findSnapEdge(S32& new_edge_val, const LLCoordGL& mouse_dir, ESnapEdge snap_edge, ESnapType snap_type, S32 threshold, S32 padding);
     /*virtual*/ void handleReshape(const LLRect& new_rect, bool by_user = false);
 
     LLScrollListColumn* getColumn() { return mColumn; }
-    void setHasResizableElement(BOOL resizable);
+    void setHasResizableElement(bool resizable);
     void updateResizeBars();
-    BOOL canResize();
-    void enableResizeBar(BOOL enable);
+    bool canResize();
+    void enableResizeBar(bool enable);
 
     void onClick(const LLSD& data);
 
 private:
     LLScrollListColumn* mColumn;
     LLResizeBar*        mResizeBar;
-    BOOL                mHasResizableElement;
+    bool                mHasResizableElement;
 };
 
 /*
@@ -158,7 +158,7 @@ public:
     ESortDirection          mSortDirection;
     LLUIString              mLabel;
     F32                     mRelWidth;
-    BOOL                    mDynamicWidth;
+    bool                    mDynamicWidth;
     S32                     mMaxContentWidth;
     S32                     mIndex;
     LLScrollListCtrl*       mParentCtrl;
diff --git a/indra/llui/llscrolllistctrl.cpp b/indra/llui/llscrolllistctrl.cpp
index 7fb732eca3..74a9641836 100644
--- a/indra/llui/llscrolllistctrl.cpp
+++ b/indra/llui/llscrolllistctrl.cpp
@@ -66,7 +66,7 @@ static LLDefaultChildRegistry::Register<LLScrollListCtrl> r("scroll_list");
 // local structures & classes.
 struct SortScrollListItem
 {
-    SortScrollListItem(const std::vector<std::pair<S32, BOOL> >& sort_orders,const LLScrollListCtrl::sort_signal_t* sort_signal, bool alternate_sort)
+    SortScrollListItem(const std::vector<std::pair<S32, bool> >& sort_orders,const LLScrollListCtrl::sort_signal_t* sort_signal, bool alternate_sort)
     :   mSortOrders(sort_orders)
     ,   mSortSignal(sort_signal)
     ,   mAltSort(alternate_sort)
@@ -80,7 +80,7 @@ struct SortScrollListItem
              it != mSortOrders.rend(); ++it)
         {
             S32 col_idx = it->first;
-            BOOL sort_ascending = it->second;
+            bool sort_ascending = it->second;
 
             S32 order = sort_ascending ? 1 : -1; // ascending or descending sort for this column?
 
@@ -114,7 +114,7 @@ struct SortScrollListItem
     }
 
 
-    typedef std::vector<std::pair<S32, BOOL> > sort_order_t;
+    typedef std::vector<std::pair<S32, bool> > sort_order_t;
     const LLScrollListCtrl::sort_signal_t* mSortSignal;
     const sort_order_t& mSortOrders;
     const bool mAltSort;
@@ -357,7 +357,7 @@ LLScrollListCtrl::~LLScrollListCtrl()
 }
 
 
-BOOL LLScrollListCtrl::setMaxItemCount(S32 max_count)
+bool LLScrollListCtrl::setMaxItemCount(S32 max_count)
 {
     if (max_count >= getItemCount())
     {
@@ -373,10 +373,10 @@ S32 LLScrollListCtrl::isEmpty() const
 
 S32 LLScrollListCtrl::getItemCount() const
 {
-    return mItemList.size();
+    return static_cast<S32>(mItemList.size());
 }
 
-BOOL LLScrollListCtrl::hasSelectedItem() const
+bool LLScrollListCtrl::hasSelectedItem() const
 {
     item_list::iterator iter;
     for (iter = mItemList.begin(); iter < mItemList.end(); )
@@ -384,11 +384,11 @@ BOOL LLScrollListCtrl::hasSelectedItem() const
         LLScrollListItem* itemp = *iter;
         if (itemp && itemp->getSelected())
         {
-            return TRUE;
+            return true;
         }
         iter++;
     }
-    return FALSE;
+    return false;
 }
 
 // virtual LLScrolListInterface function (was deleteAllItems)
@@ -523,7 +523,7 @@ LLScrollListItem* LLScrollListCtrl::getItem(const LLSD& sd) const
 }
 
 
-void LLScrollListCtrl::reshape( S32 width, S32 height, BOOL called_from_parent )
+void LLScrollListCtrl::reshape( S32 width, S32 height, bool called_from_parent )
 {
     LLUICtrl::reshape( width, height, called_from_parent );
 
@@ -551,7 +551,7 @@ void LLScrollListCtrl::updateLayout()
     // how many lines of content in a single "page"
     S32 page_lines =  getLinesPerPage();
 
-    BOOL scrollbar_visible = mLineHeight * getItemCount() > mItemListRect.getHeight();
+    bool scrollbar_visible = mLineHeight * getItemCount() > mItemListRect.getHeight();
     if (scrollbar_visible)
     {
         // provide space on the right for scrollbar
@@ -593,9 +593,9 @@ LLRect LLScrollListCtrl::getRequiredRect()
 }
 
 
-BOOL LLScrollListCtrl::addItem( LLScrollListItem* item, EAddPosition pos, BOOL requires_column )
+bool LLScrollListCtrl::addItem( LLScrollListItem* item, EAddPosition pos, bool requires_column )
 {
-    BOOL not_too_big = getItemCount() < mMaxItemCount;
+    bool not_too_big = getItemCount() < mMaxItemCount;
     if (not_too_big)
     {
         switch( pos )
@@ -851,12 +851,12 @@ void LLScrollListCtrl::setPageLines(S32 new_page_lines)
     updateLayout();
 }
 
-BOOL LLScrollListCtrl::selectFirstItem()
+bool LLScrollListCtrl::selectFirstItem()
 {
-    BOOL success = FALSE;
+    bool success = false;
 
     // our $%&@#$()^%#$()*^ iterators don't let us check against the first item inside out iteration
-    BOOL first_item = TRUE;
+    bool first_item = true;
 
     item_list::iterator iter;
     for (iter = mItemList.begin(); iter != mItemList.end(); iter++)
@@ -876,7 +876,7 @@ BOOL LLScrollListCtrl::selectFirstItem()
                     selectItem(itemp, -1);
                 }
             }
-            success = TRUE;
+            success = true;
             mOriginalSelection = 0;
         }
         else
@@ -894,17 +894,17 @@ BOOL LLScrollListCtrl::selectFirstItem()
 
 // Deselects all other items
 // virtual
-BOOL LLScrollListCtrl::selectNthItem( S32 target_index )
+bool LLScrollListCtrl::selectNthItem( S32 target_index )
 {
     return selectItemRange(target_index, target_index);
 }
 
 // virtual
-BOOL LLScrollListCtrl::selectItemRange( S32 first_index, S32 last_index )
+bool LLScrollListCtrl::selectItemRange( S32 first_index, S32 last_index )
 {
     if (mItemList.empty())
     {
-        return FALSE;
+        return false;
     }
 
     // make sure sort is up to date
@@ -918,7 +918,7 @@ BOOL LLScrollListCtrl::selectItemRange( S32 first_index, S32 last_index )
     else
         last_index = llclamp(last_index, first_index, listlen-1);
 
-    BOOL success = FALSE;
+    bool success = false;
     S32 index = 0;
     for (item_list::iterator iter = mItemList.begin(); iter != mItemList.end(); )
     {
@@ -934,8 +934,8 @@ BOOL LLScrollListCtrl::selectItemRange( S32 first_index, S32 last_index )
             if( itemp->getEnabled() )
             {
                 // TODO: support range selection for cells
-                selectItem(itemp, -1, FALSE);
-                success = TRUE;
+                selectItem(itemp, -1, false);
+                success = true;
             }
         }
         else
@@ -1083,7 +1083,7 @@ S32 LLScrollListCtrl::selectMultiple( uuid_vec_t ids )
             if (item->getEnabled() && (item->getUUID() == (*iditr)))
             {
                 // TODO: support multiple selection for cells
-                selectItem(item, -1, FALSE);
+                selectItem(item, -1, false);
                 ++count;
                 break;
             }
@@ -1134,7 +1134,7 @@ S32 LLScrollListCtrl::getItemIndex( const LLUUID& target_id ) const
     return -1;
 }
 
-void LLScrollListCtrl::selectPrevItem( BOOL extend_selection)
+void LLScrollListCtrl::selectPrevItem( bool extend_selection)
 {
     LLScrollListItem* prev_item = NULL;
 
@@ -1179,7 +1179,7 @@ void LLScrollListCtrl::selectPrevItem( BOOL extend_selection)
 }
 
 
-void LLScrollListCtrl::selectNextItem( BOOL extend_selection)
+void LLScrollListCtrl::selectNextItem( bool extend_selection)
 {
     LLScrollListItem* next_item = NULL;
 
@@ -1224,7 +1224,7 @@ void LLScrollListCtrl::selectNextItem( BOOL extend_selection)
 
 
 
-void LLScrollListCtrl::deselectAllItems(BOOL no_commit_on_change)
+void LLScrollListCtrl::deselectAllItems(bool no_commit_on_change)
 {
     item_list::iterator iter;
     for (iter = mItemList.begin(); iter != mItemList.end(); iter++)
@@ -1263,9 +1263,9 @@ LLScrollListItem* LLScrollListCtrl::addSeparator(EAddPosition pos)
 // Selects first enabled item of the given name.
 // Returns false if item not found.
 // Calls getItemByLabel in order to combine functionality
-BOOL LLScrollListCtrl::selectItemByLabel(const std::string& label, BOOL case_sensitive, S32 column/* = 0*/)
+bool LLScrollListCtrl::selectItemByLabel(const std::string& label, bool case_sensitive, S32 column/* = 0*/)
 {
-    deselectAllItems(TRUE);     // ensure that no stale items are selected, even if we don't find a match
+    deselectAllItems(true);     // ensure that no stale items are selected, even if we don't find a match
     LLScrollListItem* item = getItemByLabel(label, case_sensitive, column);
 
     bool found = NULL != item;
@@ -1282,7 +1282,7 @@ BOOL LLScrollListCtrl::selectItemByLabel(const std::string& label, BOOL case_sen
     return found;
 }
 
-LLScrollListItem* LLScrollListCtrl::getItemByLabel(const std::string& label, BOOL case_sensitive, S32 column)
+LLScrollListItem* LLScrollListCtrl::getItemByLabel(const std::string& label, bool case_sensitive, S32 column)
 {
     if (label.empty())  //RN: assume no empty items
     {
@@ -1313,19 +1313,19 @@ LLScrollListItem* LLScrollListCtrl::getItemByLabel(const std::string& label, BOO
 }
 
 
-BOOL LLScrollListCtrl::selectItemByPrefix(const std::string& target, BOOL case_sensitive, S32 column)
+bool LLScrollListCtrl::selectItemByPrefix(const std::string& target, bool case_sensitive, S32 column)
 {
     return selectItemByPrefix(utf8str_to_wstring(target), case_sensitive, column);
 }
 
 // Selects first enabled item that has a name where the name's first part matched the target string.
 // Returns false if item not found.
-BOOL LLScrollListCtrl::selectItemByPrefix(const LLWString& target, BOOL case_sensitive, S32 column)
+bool LLScrollListCtrl::selectItemByPrefix(const LLWString& target, bool case_sensitive, S32 column)
 {
-    BOOL found = FALSE;
+    bool found = false;
 
     LLWString target_trimmed( target );
-    S32 target_len = target_trimmed.size();
+    auto target_len = target_trimmed.size();
 
     if( 0 == target_len )
     {
@@ -1336,11 +1336,11 @@ BOOL LLScrollListCtrl::selectItemByPrefix(const LLWString& target, BOOL case_sen
             LLScrollListItem* item = *iter;
             // Only select enabled items with matching names
             LLScrollListCell* cellp = item->getColumn(column == -1 ? getSearchColumn() : column);
-            BOOL select = cellp ? item->getEnabled() && ('\0' == cellp->getValue().asString()[0]) : FALSE;
+            bool select = cellp ? item->getEnabled() && ('\0' == cellp->getValue().asString()[0]) : false;
             if (select)
             {
                 selectItem(item, -1);
-                found = TRUE;
+                found = true;
                 break;
             }
         }
@@ -1372,15 +1372,15 @@ BOOL LLScrollListCtrl::selectItemByPrefix(const LLWString& target, BOOL case_sen
             LLWString trimmed_label = item_label;
             LLWStringUtil::trim(trimmed_label);
 
-            BOOL select = item->getEnabled() && trimmed_label.compare(0, target_trimmed.size(), target_trimmed) == 0;
+            bool select = item->getEnabled() && trimmed_label.compare(0, target_trimmed.size(), target_trimmed) == 0;
 
             if (select)
             {
                 // find offset of matching text (might have leading whitespace)
-                S32 offset = item_label.find(target_trimmed);
-                cellp->highlightText(offset, target_trimmed.size());
+                auto offset = item_label.find(target_trimmed);
+                cellp->highlightText(static_cast<S32>(offset), static_cast<S32>(target_trimmed.size()));
                 selectItem(item, -1);
-                found = TRUE;
+                found = true;
                 break;
             }
         }
@@ -1404,7 +1404,7 @@ U32 LLScrollListCtrl::searchItems(const LLWString& substring, bool case_sensitiv
     U32 found = 0;
 
     LLWString substring_trimmed(substring);
-    S32 len = substring_trimmed.size();
+    auto len = substring_trimmed.size();
 
     if (0 == len)
     {
@@ -1413,7 +1413,7 @@ U32 LLScrollListCtrl::searchItems(const LLWString& substring, bool case_sensitiv
     }
     else
     {
-        deselectAllItems(TRUE);
+        deselectAllItems(true);
         if (!case_sensitive)
         {
             // do comparisons in lower case
@@ -1446,8 +1446,8 @@ U32 LLScrollListCtrl::searchItems(const LLWString& substring, bool case_sensitiv
             if (found_iter != std::string::npos)
             {
                 // find offset of matching text
-                cellp->highlightText(found_iter, substring_trimmed.size());
-                selectItem(item, -1, FALSE);
+                cellp->highlightText(static_cast<S32>(found_iter), static_cast<S32>(substring_trimmed.size()));
+                selectItem(item, -1, false);
 
                 found++;
 
@@ -1489,7 +1489,7 @@ const std::string LLScrollListCtrl::getSelectedItemLabel(S32 column) const
 // "StringUUID" interface: use this when you're creating a list that contains non-unique strings each of which
 // has an associated, unique UUID, and only one of which can be selected at a time.
 
-LLScrollListItem* LLScrollListCtrl::addStringUUIDItem(const std::string& item_text, const LLUUID& id, EAddPosition pos, BOOL enabled)
+LLScrollListItem* LLScrollListCtrl::addStringUUIDItem(const std::string& item_text, const LLUUID& id, EAddPosition pos, bool enabled)
 {
     if (getItemCount() < mMaxItemCount)
     {
@@ -1504,16 +1504,16 @@ LLScrollListItem* LLScrollListCtrl::addStringUUIDItem(const std::string& item_te
 }
 
 // Select the line or lines that match this UUID
-BOOL LLScrollListCtrl::selectByID( const LLUUID& id )
+bool LLScrollListCtrl::selectByID( const LLUUID& id )
 {
     return selectByValue( LLSD(id) );
 }
 
-BOOL LLScrollListCtrl::setSelectedByValue(const LLSD& value, BOOL selected)
+bool LLScrollListCtrl::setSelectedByValue(const LLSD& value, bool selected)
 {
-    BOOL found = FALSE;
+    bool found = false;
 
-    if (selected && !mAllowMultipleSelection) deselectAllItems(TRUE);
+    if (selected && !mAllowMultipleSelection) deselectAllItems(true);
 
     item_list::iterator iter;
     for (iter = mItemList.begin(); iter != mItemList.end(); iter++)
@@ -1527,12 +1527,12 @@ BOOL LLScrollListCtrl::setSelectedByValue(const LLSD& value, BOOL selected)
                 {
                     LLSD::Binary data1 = value.asBinary();
                     LLSD::Binary data2 = item->getValue().asBinary();
-                    found = std::equal(data1.begin(), data1.end(), data2.begin()) ? TRUE : FALSE;
+                    found = std::equal(data1.begin(), data1.end(), data2.begin());
                 }
             }
             else
             {
-                found = item->getValue().asString() == value.asString() ? TRUE : FALSE;
+                found = item->getValue().asString() == value.asString();
             }
 
             if (found)
@@ -1558,7 +1558,7 @@ BOOL LLScrollListCtrl::setSelectedByValue(const LLSD& value, BOOL selected)
     return found;
 }
 
-BOOL LLScrollListCtrl::isSelected(const LLSD& value) const
+bool LLScrollListCtrl::isSelected(const LLSD& value) const
 {
     item_list::const_iterator iter;
     for (iter = mItemList.begin(); iter != mItemList.end(); iter++)
@@ -1569,7 +1569,7 @@ BOOL LLScrollListCtrl::isSelected(const LLSD& value) const
             return item->getSelected();
         }
     }
-    return FALSE;
+    return false;
 }
 
 LLUUID LLScrollListCtrl::getStringUUIDSelectedItem() const
@@ -1736,36 +1736,36 @@ void LLScrollListCtrl::draw()
     LLUICtrl::draw();
 }
 
-void LLScrollListCtrl::setEnabled(BOOL enabled)
+void LLScrollListCtrl::setEnabled(bool enabled)
 {
     mCanSelect = enabled;
     setTabStop(enabled);
     mScrollbar->setTabStop(!enabled && mScrollbar->getPageSize() < mScrollbar->getDocSize());
 }
 
-BOOL LLScrollListCtrl::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLScrollListCtrl::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     // Pretend the mouse is over the scrollbar
     handled = mScrollbar->handleScrollWheel( 0, 0, clicks );
 
     if (mMouseWheelOpaque)
     {
-        return TRUE;
+        return true;
     }
 
     return handled;
 }
 
-BOOL LLScrollListCtrl::handleScrollHWheel(S32 x, S32 y, S32 clicks)
+bool LLScrollListCtrl::handleScrollHWheel(S32 x, S32 y, S32 clicks)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     // Pretend the mouse is over the scrollbar
     handled = mScrollbar->handleScrollHWheel( 0, 0, clicks );
 
     if (mMouseWheelOpaque)
     {
-        return TRUE;
+        return true;
     }
 
     return handled;
@@ -1783,20 +1783,20 @@ LLRect LLScrollListCtrl::getCellRect(S32 row_index, S32 column_index)
     return cell_rect;
 }
 
-BOOL LLScrollListCtrl::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLScrollListCtrl::handleToolTip(S32 x, S32 y, MASK mask)
 {
     S32 column_index = getColumnIndexFromOffset(x);
     LLScrollListColumn* columnp = getColumn(column_index);
 
-    if (columnp == NULL) return FALSE;
+    if (columnp == NULL) return false;
 
-    BOOL handled = FALSE;
+    bool handled = false;
     // show tooltip for full name of hovered item if it has been truncated
     LLScrollListItem* hit_item = hitItem(x, y);
     if (hit_item)
     {
         LLScrollListCell* hit_cell = hit_item->getColumn(column_index);
-        if (!hit_cell) return FALSE;
+        if (!hit_cell) return false;
         if (hit_cell
             && hit_cell->isText()
             && hit_cell->needsToolTip())
@@ -1815,7 +1815,7 @@ BOOL LLScrollListCtrl::handleToolTip(S32 x, S32 y, MASK mask)
                                         .delay_time(0.2f)
                                         .sticky_rect(sticky_rect));
         }
-        handled = TRUE;
+        handled = true;
     }
 
     // otherwise, look for a tooltip associated with this column
@@ -1828,11 +1828,11 @@ BOOL LLScrollListCtrl::handleToolTip(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLScrollListCtrl::selectItemAt(S32 x, S32 y, MASK mask)
+bool LLScrollListCtrl::selectItemAt(S32 x, S32 y, MASK mask)
 {
-    if (!mCanSelect) return FALSE;
+    if (!mCanSelect) return false;
 
-    BOOL selection_changed = FALSE;
+    bool selection_changed = false;
 
     LLScrollListItem* hit_item = hitItem(x, y);
 
@@ -1868,17 +1868,17 @@ BOOL LLScrollListCtrl::selectItemAt(S32 x, S32 y, MASK mask)
                         LLScrollListItem *item = *itor;
                         if (item == hit_item || item == lastSelected)
                         {
-                            selectItem(item, getColumnIndexFromOffset(x), FALSE);
+                            selectItem(item, getColumnIndexFromOffset(x), false);
                             selecting = !selecting;
                             if (hit_item == lastSelected)
                             {
                                 // stop selecting now, since we just clicked on our last selected item
-                                selecting = FALSE;
+                                selecting = false;
                             }
                         }
                         if (selecting)
                         {
-                            selectItem(item, getColumnIndexFromOffset(x), FALSE);
+                            selectItem(item, getColumnIndexFromOffset(x), false);
                         }
                     }
                 }
@@ -1893,7 +1893,7 @@ BOOL LLScrollListCtrl::selectItemAt(S32 x, S32 y, MASK mask)
                 {
                     if(!(mMaxSelectable > 0 && getAllSelected().size() >= mMaxSelectable))
                     {
-                        selectItem(hit_item, getColumnIndexFromOffset(x), FALSE);
+                        selectItem(hit_item, getColumnIndexFromOffset(x), false);
                     }
                     else
                     {
@@ -1906,7 +1906,7 @@ BOOL LLScrollListCtrl::selectItemAt(S32 x, S32 y, MASK mask)
             }
             else
             {
-                deselectAllItems(TRUE);
+                deselectAllItems(true);
                 selectItem(hit_item, getColumnIndexFromOffset(x));
             }
         }
@@ -1927,21 +1927,21 @@ BOOL LLScrollListCtrl::selectItemAt(S32 x, S32 y, MASK mask)
     else
     {
         //mLastSelected = NULL;
-        //deselectAllItems(TRUE);
+        //deselectAllItems(true);
     }
 
     return selection_changed;
 }
 
 
-BOOL LLScrollListCtrl::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLScrollListCtrl::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = childrenHandleMouseDown(x, y, mask) != NULL;
+    bool handled = childrenHandleMouseDown(x, y, mask) != NULL;
 
     if( !handled )
     {
         // set keyboard focus first, in case click action wants to move focus elsewhere
-        setFocus(TRUE);
+        setFocus(true);
 
         // clear selection changed flag because user is starting a selection operation
         mSelectionChanged = false;
@@ -1949,10 +1949,10 @@ BOOL LLScrollListCtrl::handleMouseDown(S32 x, S32 y, MASK mask)
         handleClick(x, y, mask);
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLScrollListCtrl::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLScrollListCtrl::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if (hasMouseCapture())
     {
@@ -1978,7 +1978,7 @@ BOOL LLScrollListCtrl::handleMouseUp(S32 x, S32 y, MASK mask)
 }
 
 // virtual
-BOOL LLScrollListCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLScrollListCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     LLScrollListItem *item = hitItem(x, y);
     if (item)
@@ -2030,12 +2030,12 @@ BOOL LLScrollListCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
 
                 menu->show(x, y);
                 LLMenuGL::showPopup(this, menu, x, y);
-                return TRUE;
+                return true;
             }
         }
         return LLUICtrl::handleRightMouseDown(x, y, mask);
     }
-    return FALSE;
+    return false;
 }
 
 void LLScrollListCtrl::showProfile(std::string id, bool is_group)
@@ -2108,10 +2108,10 @@ void LLScrollListCtrl::copySLURLToClipboard(std::string id, bool is_group)
     LLUrlAction::copyURLToClipboard(slurl);
 }
 
-BOOL LLScrollListCtrl::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLScrollListCtrl::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
-    //BOOL handled = FALSE;
-    BOOL handled = handleClick(x, y, mask);
+    //bool handled = false;
+    bool handled = handleClick(x, y, mask);
 
     if (!handled)
     {
@@ -2127,19 +2127,19 @@ BOOL LLScrollListCtrl::handleDoubleClick(S32 x, S32 y, MASK mask)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLScrollListCtrl::handleClick(S32 x, S32 y, MASK mask)
+bool LLScrollListCtrl::handleClick(S32 x, S32 y, MASK mask)
 {
     // which row was clicked on?
     LLScrollListItem* hit_item = hitItem(x, y);
-    if (!hit_item) return FALSE;
+    if (!hit_item) return false;
 
     // get appropriate cell from that row
     S32 column_index = getColumnIndexFromOffset(x);
     LLScrollListCell* hit_cell = hit_item->getColumn(column_index);
-    if (!hit_cell) return FALSE;
+    if (!hit_cell) return false;
 
     // if cell handled click directly (i.e. clicked on an embedded checkbox)
     if (hit_cell->handleClick())
@@ -2175,7 +2175,7 @@ BOOL LLScrollListCtrl::handleClick(S32 x, S32 y, MASK mask)
             onCommit();
         }
         // eat click (e.g. do not trigger double click callback)
-        return TRUE;
+        return true;
     }
     else
     {
@@ -2184,7 +2184,7 @@ BOOL LLScrollListCtrl::handleClick(S32 x, S32 y, MASK mask)
         gFocusMgr.setMouseCapture(this);
         mNeedsScroll = true;
         // do not eat click (allow double click callback)
-        return FALSE;
+        return false;
     }
 }
 
@@ -2279,9 +2279,9 @@ S32 LLScrollListCtrl::getRowOffsetFromIndex(S32 index)
 }
 
 
-BOOL LLScrollListCtrl::handleHover(S32 x,S32 y,MASK mask)
+bool LLScrollListCtrl::handleHover(S32 x,S32 y,MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     if (hasMouseCapture())
     {
@@ -2337,9 +2337,9 @@ void LLScrollListCtrl::onMouseLeave(S32 x, S32 y, MASK mask)
     mouseOverHighlightNthItem(-1);
 }
 
-BOOL LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
+bool LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     // not called from parent means we have keyboard focus or a child does
     if (mCanSelect)
@@ -2352,18 +2352,18 @@ BOOL LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
                 if (mAllowKeyboardMovement || hasFocus())
                 {
                     // commit implicit in call
-                    selectPrevItem(FALSE);
+                    selectPrevItem(false);
                     mNeedsScroll = true;
-                    handled = TRUE;
+                    handled = true;
                 }
                 break;
             case KEY_DOWN:
                 if (mAllowKeyboardMovement || hasFocus())
                 {
                     // commit implicit in call
-                    selectNextItem(FALSE);
+                    selectNextItem(false);
                     mNeedsScroll = true;
-                    handled = TRUE;
+                    handled = true;
                 }
                 break;
             case KEY_LEFT:
@@ -2388,7 +2388,7 @@ BOOL LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
                             break;
                         }
                         item->setSelectedCell(cell);
-                        handled = TRUE;
+                        handled = true;
                     }
                 }
                 break;
@@ -2414,7 +2414,7 @@ BOOL LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
                             break;
                         }
                         item->setSelectedCell(cell);
-                        handled = TRUE;
+                        handled = true;
                     }
                 }
                 break;
@@ -2428,7 +2428,7 @@ BOOL LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
                     {
                         onCommit();
                     }
-                    handled = TRUE;
+                    handled = true;
                 }
                 break;
             case KEY_PAGE_DOWN:
@@ -2441,7 +2441,7 @@ BOOL LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
                     {
                         onCommit();
                     }
-                    handled = TRUE;
+                    handled = true;
                 }
                 break;
             case KEY_HOME:
@@ -2454,7 +2454,7 @@ BOOL LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
                     {
                         onCommit();
                     }
-                    handled = TRUE;
+                    handled = true;
                 }
                 break;
             case KEY_END:
@@ -2467,7 +2467,7 @@ BOOL LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
                     {
                         onCommit();
                     }
-                    handled = TRUE;
+                    handled = true;
                 }
                 break;
             case KEY_RETURN:
@@ -2478,7 +2478,7 @@ BOOL LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
                 {
                     onCommit();
                     mSearchString.clear();
-                    handled = TRUE;
+                    handled = true;
                 }
                 break;
             case KEY_BACKSPACE:
@@ -2498,7 +2498,7 @@ BOOL LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
                         }
                     }
                 }
-                else if (selectItemByPrefix(wstring_to_utf8str(mSearchString), FALSE))
+                else if (selectItemByPrefix(wstring_to_utf8str(mSearchString), false))
                 {
                     mNeedsScroll = true;
                     // update search string only on successful match
@@ -2521,11 +2521,11 @@ BOOL LLScrollListCtrl::handleKeyHere(KEY key,MASK mask )
     return handled;
 }
 
-BOOL LLScrollListCtrl::handleUnicodeCharHere(llwchar uni_char)
+bool LLScrollListCtrl::handleUnicodeCharHere(llwchar uni_char)
 {
     if ((uni_char < 0x20) || (uni_char == 0x7F)) // Control character or DEL
     {
-        return FALSE;
+        return false;
     }
 
     // perform incremental search based on keyboard input
@@ -2538,7 +2538,7 @@ BOOL LLScrollListCtrl::handleUnicodeCharHere(llwchar uni_char)
     // type ahead search is case insensitive
     uni_char = LLStringOps::toLower((llwchar)uni_char);
 
-    if (selectItemByPrefix(wstring_to_utf8str(mSearchString + (llwchar)uni_char), FALSE))
+    if (selectItemByPrefix(wstring_to_utf8str(mSearchString + (llwchar)uni_char), false))
     {
         // update search string only on successful match
         mNeedsScroll = true;
@@ -2609,7 +2609,7 @@ BOOL LLScrollListCtrl::handleUnicodeCharHere(llwchar uni_char)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -2618,11 +2618,11 @@ void LLScrollListCtrl::reportInvalidInput()
     make_ui_sound("UISndBadKeystroke");
 }
 
-BOOL LLScrollListCtrl::isRepeatedChars(const LLWString& string) const
+bool LLScrollListCtrl::isRepeatedChars(const LLWString& string) const
 {
     if (string.empty())
     {
-        return FALSE;
+        return false;
     }
 
     llwchar first_char = string[0];
@@ -2631,14 +2631,14 @@ BOOL LLScrollListCtrl::isRepeatedChars(const LLWString& string) const
     {
         if (string[i] != first_char)
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
-void LLScrollListCtrl::selectItem(LLScrollListItem* itemp, S32 cell, BOOL select_single_item)
+void LLScrollListCtrl::selectItem(LLScrollListItem* itemp, S32 cell, bool select_single_item)
 {
     if (!itemp) return;
 
@@ -2654,9 +2654,9 @@ void LLScrollListCtrl::selectItem(LLScrollListItem* itemp, S32 cell, BOOL select
         }
         if (select_single_item)
         {
-            deselectAllItems(TRUE);
+            deselectAllItems(true);
         }
-        itemp->setSelected(TRUE);
+        itemp->setSelected(true);
         switch (mSelectionType)
         {
         case CELL:
@@ -2685,7 +2685,7 @@ void LLScrollListCtrl::deselectItem(LLScrollListItem* itemp)
             mLastSelected = NULL;
         }
 
-        itemp->setSelected(FALSE);
+        itemp->setSelected(false);
         LLScrollListCell* cellp = itemp->getColumn(getSearchColumn());
         if (cellp)
         {
@@ -2700,7 +2700,7 @@ void LLScrollListCtrl::commitIfChanged()
     if (mSelectionChanged)
     {
         mDirty = true;
-        mSelectionChanged = FALSE;
+        mSelectionChanged = false;
         onCommit();
     }
 }
@@ -2710,13 +2710,13 @@ struct SameSortColumn
     SameSortColumn(S32 column) : mColumn(column) {}
     S32 mColumn;
 
-    bool operator()(std::pair<S32, BOOL> sort_column) { return sort_column.first == mColumn; }
+    bool operator()(std::pair<S32, bool> sort_column) { return sort_column.first == mColumn; }
 };
 
-BOOL LLScrollListCtrl::setSort(S32 column_idx, BOOL ascending)
+bool LLScrollListCtrl::setSort(S32 column_idx, bool ascending)
 {
     LLScrollListColumn* sort_column = getColumn(column_idx);
-    if (!sort_column) return FALSE;
+    if (!sort_column) return false;
 
     sort_column->mSortDirection = ascending ? LLScrollListColumn::ASCENDING : LLScrollListColumn::DESCENDING;
 
@@ -2727,7 +2727,7 @@ BOOL LLScrollListCtrl::setSort(S32 column_idx, BOOL ascending)
     if (mSortColumns.empty())
     {
         mSortColumns.push_back(new_sort_column);
-        return TRUE;
+        return true;
     }
     else
     {
@@ -2765,7 +2765,7 @@ void LLScrollListCtrl::onScrollChange( S32 new_pos, LLScrollbar* scrollbar )
 }
 
 
-void LLScrollListCtrl::sortByColumn(const std::string& name, BOOL ascending)
+void LLScrollListCtrl::sortByColumn(const std::string& name, bool ascending)
 {
     column_map_t::iterator itor = mColumns.find(name);
     if (itor != mColumns.end())
@@ -2775,7 +2775,7 @@ void LLScrollListCtrl::sortByColumn(const std::string& name, BOOL ascending)
 }
 
 // First column is column 0
-void  LLScrollListCtrl::sortByColumnIndex(U32 column, BOOL ascending)
+void  LLScrollListCtrl::sortByColumnIndex(U32 column, bool ascending)
 {
     setSort(column, ascending);
     updateSort();
@@ -2796,9 +2796,9 @@ void LLScrollListCtrl::updateSort() const
 }
 
 // for one-shot sorts, does not save sort column/order
-void LLScrollListCtrl::sortOnce(S32 column, BOOL ascending)
+void LLScrollListCtrl::sortOnce(S32 column, bool ascending)
 {
-    std::vector<std::pair<S32, BOOL> > sort_column;
+    std::vector<std::pair<S32, bool> > sort_column;
     sort_column.push_back(std::make_pair(column, ascending));
 
     // do stable sort to preserve any previous sorts
@@ -2897,11 +2897,11 @@ void    LLScrollListCtrl::copy()
     {
         buffer += (*itor)->getContentsCSV() + "\n";
     }
-    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(buffer), 0, buffer.length());
+    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(buffer), 0, static_cast<S32>(buffer.length()));
 }
 
 // virtual
-BOOL    LLScrollListCtrl::canCopy() const
+bool    LLScrollListCtrl::canCopy() const
 {
     return (getFirstSelected() != NULL);
 }
@@ -2914,7 +2914,7 @@ void    LLScrollListCtrl::cut()
 }
 
 // virtual
-BOOL    LLScrollListCtrl::canCut() const
+bool    LLScrollListCtrl::canCut() const
 {
     return canCopy() && canDoDelete();
 }
@@ -2929,7 +2929,7 @@ void    LLScrollListCtrl::selectAll()
         LLScrollListItem *itemp = *iter;
         if( itemp->getEnabled() )
         {
-            selectItem(itemp, -1, FALSE);
+            selectItem(itemp, -1, false);
         }
     }
 
@@ -2940,7 +2940,7 @@ void    LLScrollListCtrl::selectAll()
 }
 
 // virtual
-BOOL    LLScrollListCtrl::canSelectAll() const
+bool    LLScrollListCtrl::canSelectAll() const
 {
     return getCanSelect() && mAllowMultipleSelection && !(mMaxSelectable > 0 && mItemList.size() > mMaxSelectable);
 }
@@ -2952,7 +2952,7 @@ void    LLScrollListCtrl::deselect()
 }
 
 // virtual
-BOOL    LLScrollListCtrl::canDeselect() const
+bool    LLScrollListCtrl::canDeselect() const
 {
     return getCanSelect();
 }
@@ -2981,7 +2981,7 @@ void LLScrollListCtrl::addColumn(const LLScrollListColumn::Params& column_params
         // Add column
         mColumns[name] = new LLScrollListColumn(column_params, this);
         LLScrollListColumn* new_column = mColumns[name];
-        new_column->mIndex = mColumns.size()-1;
+        new_column->mIndex = static_cast<S32>(mColumns.size()) - 1;
 
         // Add button
         if (new_column->getWidth() > 0 || new_column->mRelWidth > 0 || new_column->mDynamicWidth)
@@ -3093,7 +3093,7 @@ std::string LLScrollListCtrl::getSortColumnName()
     else return "";
 }
 
-BOOL LLScrollListCtrl::hasSortOrder() const
+bool LLScrollListCtrl::hasSortOrder() const
 {
     return !mSortColumns.empty();
 }
@@ -3177,7 +3177,7 @@ LLScrollListItem* LLScrollListCtrl::addRow(LLScrollListItem *new_item, const LLS
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
     if (!item_p.validateBlock() || !new_item) return NULL;
-    new_item->setNumColumns(mColumns.size());
+    new_item->setNumColumns(static_cast<S32>(mColumns.size()));
 
     // Add any columns we don't already have
     S32 col_index = 0;
@@ -3212,7 +3212,7 @@ LLScrollListItem* LLScrollListCtrl::addRow(LLScrollListItem *new_item, const LLS
             }
             addColumn(new_column);
             columnp = mColumns[column];
-            new_item->setNumColumns(mColumns.size());
+            new_item->setNumColumns(static_cast<S32>(mColumns.size()));
         }
 
         S32 index = columnp->mIndex;
@@ -3230,7 +3230,7 @@ LLScrollListItem* LLScrollListCtrl::addRow(LLScrollListItem *new_item, const LLS
                 && cell->isText()
                 && !cell->getValue().asString().empty())
             {
-                columnp->mHeader->setHasResizableElement(TRUE);
+                columnp->mHeader->setHasResizableElement(true);
             }
         }
 
@@ -3245,7 +3245,7 @@ LLScrollListItem* LLScrollListCtrl::addRow(LLScrollListItem *new_item, const LLS
             new_column.name = "0";
 
             addColumn(new_column);
-            new_item->setNumColumns(mColumns.size());
+            new_item->setNumColumns(static_cast<S32>(mColumns.size()));
         }
 
         LLScrollListCell* cell = LLScrollListCell::create(LLScrollListCell::Params().value(item_p.value));
@@ -3258,7 +3258,7 @@ LLScrollListItem* LLScrollListCtrl::addRow(LLScrollListItem *new_item, const LLS
                 && cell->isText()
                 && !cell->getValue().asString().empty())
             {
-                columnp->mHeader->setHasResizableElement(TRUE);
+                columnp->mHeader->setHasResizableElement(true);
             }
         }
     }
@@ -3315,26 +3315,26 @@ LLSD LLScrollListCtrl::getValue() const
     return item->getValue();
 }
 
-BOOL LLScrollListCtrl::operateOnSelection(EOperation op)
+bool LLScrollListCtrl::operateOnSelection(EOperation op)
 {
     if (op == OP_DELETE)
     {
         deleteSelectedItems();
-        return TRUE;
+        return true;
     }
     else if (op == OP_DESELECT)
     {
         deselectAllItems();
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLScrollListCtrl::operateOnAll(EOperation op)
+bool LLScrollListCtrl::operateOnAll(EOperation op)
 {
     if (op == OP_DELETE)
     {
         clearRows();
-        return TRUE;
+        return true;
     }
     else if (op == OP_DESELECT)
     {
@@ -3344,10 +3344,10 @@ BOOL LLScrollListCtrl::operateOnAll(EOperation op)
     {
         selectAll();
     }
-    return FALSE;
+    return false;
 }
 //virtual
-void LLScrollListCtrl::setFocus(BOOL b)
+void LLScrollListCtrl::setFocus(bool b)
 {
     // for tabbing into pristine scroll lists (Finder)
     if (!getFirstSelected())
@@ -3360,9 +3360,9 @@ void LLScrollListCtrl::setFocus(BOOL b)
 
 
 // virtual
-BOOL    LLScrollListCtrl::isDirty() const
+bool    LLScrollListCtrl::isDirty() const
 {
-    BOOL grubby = mDirty;
+    bool grubby = mDirty;
     if ( !mAllowMultipleSelection )
     {
         grubby = (mOriginalSelection != getFirstSelectedIndex());
@@ -3373,7 +3373,7 @@ BOOL    LLScrollListCtrl::isDirty() const
 // Clear dirty state
 void LLScrollListCtrl::resetDirty()
 {
-    mDirty = FALSE;
+    mDirty = false;
     mOriginalSelection = getFirstSelectedIndex();
 }
 
diff --git a/indra/llui/llscrolllistctrl.h b/indra/llui/llscrolllistctrl.h
index c525fd72a8..f25ba61fd4 100644
--- a/indra/llui/llscrolllistctrl.h
+++ b/indra/llui/llscrolllistctrl.h
@@ -166,7 +166,7 @@ public:
 
     // Sets an array of column descriptors
     void            setColumnHeadings(const LLSD& headings);
-    void            sortByColumnIndex(U32 column, BOOL ascending);
+    void            sortByColumnIndex(U32 column, bool ascending);
 
     // LLCtrlListInterface functions
     virtual S32  getItemCount() const;
@@ -178,7 +178,7 @@ public:
     virtual bool    preProcessChildNode(LLXMLNodePtr child);
     virtual LLScrollListColumn* getColumn(S32 index);
     virtual LLScrollListColumn* getColumn(const std::string& name);
-    virtual S32 getNumColumns() const { return mColumnsIndexed.size(); }
+    virtual S32 getNumColumns() const { return static_cast<S32>(mColumnsIndexed.size()); }
 
     // Adds a single element, from an array of:
     // "columns" => [ "column" => column name, "value" => value, "type" => type, "font" => font, "font-style" => style ], "id" => uuid
@@ -189,7 +189,7 @@ public:
     // Simple add element. Takes a single array of:
     // [ "value" => value, "font" => font, "font-style" => style ]
     virtual void clearRows(); // clears all elements
-    virtual void sortByColumn(const std::string& name, BOOL ascending);
+    virtual void sortByColumn(const std::string& name, bool ascending);
 
     // These functions take and return an array of arrays of elements, as above
     virtual void    setValue(const LLSD& value );
@@ -200,37 +200,37 @@ public:
     LLCtrlScrollInterface*      getScrollInterface()    { return (LLCtrlScrollInterface*)this; }
 
     // DEPRECATED: Use setSelectedByValue() below.
-    BOOL            setCurrentByID( const LLUUID& id )  { return selectByID(id); }
+    bool            setCurrentByID( const LLUUID& id )  { return selectByID(id); }
     virtual LLUUID  getCurrentID() const                { return getStringUUIDSelectedItem(); }
 
-    BOOL            operateOnSelection(EOperation op);
-    BOOL            operateOnAll(EOperation op);
+    bool            operateOnSelection(EOperation op);
+    bool            operateOnAll(EOperation op);
 
-    // returns FALSE if unable to set the max count so low
-    BOOL            setMaxItemCount(S32 max_count);
+    // returns false if unable to set the max count so low
+    bool            setMaxItemCount(S32 max_count);
 
-    BOOL            selectByID( const LLUUID& id );     // FALSE if item not found
+    bool            selectByID( const LLUUID& id );     // false if item not found
 
     // Match item by value.asString(), which should work for string, integer, uuid.
-    // Returns FALSE if not found.
-    BOOL            setSelectedByValue(const LLSD& value, BOOL selected);
+    // Returns false if not found.
+    bool            setSelectedByValue(const LLSD& value, bool selected);
 
-    BOOL            isSorted() const { return mSorted; }
+    bool            isSorted() const { return mSorted; }
 
-    virtual BOOL    isSelected(const LLSD& value) const;
+    virtual bool    isSelected(const LLSD& value) const;
 
-    BOOL            hasSelectedItem() const;
+    bool            hasSelectedItem() const;
 
-    BOOL            handleClick(S32 x, S32 y, MASK mask);
-    BOOL            selectFirstItem();
-    BOOL            selectNthItem( S32 index );
-    BOOL            selectItemRange( S32 first, S32 last );
-    BOOL            selectItemAt(S32 x, S32 y, MASK mask);
+    bool            handleClick(S32 x, S32 y, MASK mask);
+    bool            selectFirstItem();
+    bool            selectNthItem( S32 index );
+    bool            selectItemRange( S32 first, S32 last );
+    bool            selectItemAt(S32 x, S32 y, MASK mask);
 
     void            deleteSingleItem( S32 index );
     void            deleteItems(const LLSD& sd);
     void            deleteSelectedItems();
-    void            deselectAllItems(BOOL no_commit_on_change = FALSE); // by default, go ahead and commit on selection change
+    void            deselectAllItems(bool no_commit_on_change = false); // by default, go ahead and commit on selection change
 
     void            clearHighlightedItems();
 
@@ -247,8 +247,8 @@ public:
     void            swapWithNext(S32 index);
     void            swapWithPrevious(S32 index);
 
-    void            setCanSelect(BOOL can_select)       { mCanSelect = can_select; }
-    virtual BOOL    getCanSelect() const                { return mCanSelect; }
+    void            setCanSelect(bool can_select)       { mCanSelect = can_select; }
+    virtual bool    getCanSelect() const                { return mCanSelect; }
 
     S32             getItemIndex( LLScrollListItem* item ) const;
     S32             getItemIndex( const LLUUID& item_id ) const;
@@ -260,10 +260,10 @@ public:
     // one of which can be selected at a time.
     virtual LLScrollListItem* addSimpleElement(const std::string& value, EAddPosition pos = ADD_BOTTOM, const LLSD& id = LLSD());
 
-    BOOL            selectItemByLabel( const std::string& item, BOOL case_sensitive = TRUE, S32 column = 0 );       // FALSE if item not found
-    BOOL            selectItemByPrefix(const std::string& target, BOOL case_sensitive = TRUE, S32 column = -1);
-    BOOL            selectItemByPrefix(const LLWString& target, BOOL case_sensitive = TRUE, S32 column = -1);
-    LLScrollListItem*   getItemByLabel(const std::string& item, BOOL case_sensitive = TRUE, S32 column = 0);
+    bool            selectItemByLabel( const std::string& item, bool case_sensitive = true, S32 column = 0 );       // false if item not found
+    bool            selectItemByPrefix(const std::string& target, bool case_sensitive = true, S32 column = -1);
+    bool            selectItemByPrefix(const LLWString& target, bool case_sensitive = true, S32 column = -1);
+    LLScrollListItem*   getItemByLabel( const std::string& item, bool case_sensitive = true, S32 column = 0 );
     const std::string   getSelectedItemLabel(S32 column = 0) const;
     LLSD            getSelectedValue();
 
@@ -278,7 +278,7 @@ public:
     // DEPRECATED: Use LLSD versions of setCommentText() and getSelectedValue().
     // "StringUUID" interface: use this when you're creating a list that contains non-unique strings each of which
     // has an associated, unique UUID, and only one of which can be selected at a time.
-    LLScrollListItem*   addStringUUIDItem(const std::string& item_text, const LLUUID& id, EAddPosition pos = ADD_BOTTOM, BOOL enabled = TRUE);
+    LLScrollListItem*   addStringUUIDItem(const std::string& item_text, const LLUUID& id, EAddPosition pos = ADD_BOTTOM, bool enabled = true);
     LLUUID              getStringUUIDSelectedItem() const;
 
     LLScrollListItem*   getFirstSelected() const;
@@ -294,7 +294,7 @@ public:
 
     LLScrollListItem*   getItem(const LLSD& sd) const;
 
-    void setAllowMultipleSelection(BOOL mult )  { mAllowMultipleSelection = mult; }
+    void setAllowMultipleSelection(bool mult )  { mAllowMultipleSelection = mult; }
 
     void setBgWriteableColor(const LLColor4 &c) { mBgWriteableColor = c; }
     void setReadOnlyBgColor(const LLColor4 &c)  { mBgReadOnlyColor = c; }
@@ -306,15 +306,15 @@ public:
     void setHighlightedColor(const LLColor4 &c) { mHighlightedColor = c; }
     void setFgDisableColor(const LLColor4 &c)   { mFgDisabledColor = c; }
 
-    void setBackgroundVisible(BOOL b)           { mBackgroundVisible = b; }
-    void setDrawStripes(BOOL b)                 { mDrawStripes = b; }
+    void setBackgroundVisible(bool b)           { mBackgroundVisible = b; }
+    void setDrawStripes(bool b)                 { mDrawStripes = b; }
     void setColumnPadding(const S32 c)          { mColumnPadding = c; }
     S32  getColumnPadding() const               { return mColumnPadding; }
     void setRowPadding(const S32 c)             { mColumnPadding = c; }
     S32  getRowPadding() const                  { return mColumnPadding; }
-    void setCommitOnKeyboardMovement(BOOL b)    { mCommitOnKeyboardMovement = b; }
-    void setCommitOnSelectionChange(BOOL b)     { mCommitOnSelectionChange = b; }
-    void setAllowKeyboardMovement(BOOL b)       { mAllowKeyboardMovement = b; }
+    void setCommitOnKeyboardMovement(bool b)    { mCommitOnKeyboardMovement = b; }
+    void setCommitOnSelectionChange(bool b)     { mCommitOnSelectionChange = b; }
+    void setAllowKeyboardMovement(bool b)       { mAllowKeyboardMovement = b; }
 
     void            setMaxSelectable(U32 max_selected) { mMaxSelectable = max_selected; }
     S32             getMaxSelectable() { return mMaxSelectable; }
@@ -337,31 +337,31 @@ public:
 
     // Overridden from LLView
     /*virtual*/ void    draw();
-    /*virtual*/ BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleDoubleClick(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleKeyHere(KEY key, MASK mask);
-    /*virtual*/ BOOL    handleUnicodeCharHere(llwchar uni_char);
-    /*virtual*/ BOOL    handleScrollWheel(S32 x, S32 y, S32 clicks);
-    /*virtual*/ BOOL    handleScrollHWheel(S32 x, S32 y, S32 clicks);
-    /*virtual*/ BOOL    handleToolTip(S32 x, S32 y, MASK mask);
-    /*virtual*/ void    setEnabled(BOOL enabled);
-    /*virtual*/ void    setFocus( BOOL b );
+    /*virtual*/ bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleKeyHere(KEY key, MASK mask);
+    /*virtual*/ bool    handleUnicodeCharHere(llwchar uni_char);
+    /*virtual*/ bool    handleScrollWheel(S32 x, S32 y, S32 clicks);
+    /*virtual*/ bool    handleScrollHWheel(S32 x, S32 y, S32 clicks);
+    /*virtual*/ bool    handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ void    setEnabled(bool enabled);
+    /*virtual*/ void    setFocus( bool b );
     /*virtual*/ void    onFocusReceived();
     /*virtual*/ void    onFocusLost();
     /*virtual*/ void    onMouseLeave(S32 x, S32 y, MASK mask);
-    /*virtual*/ void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void    reshape(S32 width, S32 height, bool called_from_parent = true);
 
-    virtual BOOL    isDirty() const;
+    virtual bool    isDirty() const;
     virtual void    resetDirty();       // Clear dirty state
 
     virtual void    updateLayout();
     virtual void    fitContents(S32 max_width, S32 max_height);
 
     virtual LLRect  getRequiredRect();
-    static  BOOL    rowPreceeds(LLScrollListItem *new_row, LLScrollListItem *test_row);
+    static  bool    rowPreceeds(LLScrollListItem *new_row, LLScrollListItem *test_row);
 
     LLRect          getItemListRect() { return mItemListRect; }
 
@@ -383,39 +383,39 @@ public:
      * then display all items.
      */
     void setPageLines(S32 page_lines );
-    void setCollapseEmptyColumns(BOOL collapse);
+    void setCollapseEmptyColumns(bool collapse);
 
     LLScrollListItem*   hitItem(S32 x,S32 y);
     virtual void        scrollToShowSelected();
 
     // LLEditMenuHandler functions
     virtual void    copy();
-    virtual BOOL    canCopy() const;
+    virtual bool    canCopy() const;
     virtual void    cut();
-    virtual BOOL    canCut() const;
+    virtual bool    canCut() const;
     virtual void    selectAll();
-    virtual BOOL    canSelectAll() const;
+    virtual bool    canSelectAll() const;
     virtual void    deselect();
-    virtual BOOL    canDeselect() const;
+    virtual bool    canDeselect() const;
 
     void            setNumDynamicColumns(S32 num) { mNumDynamicWidthColumns = num; }
     void            updateStaticColumnWidth(LLScrollListColumn* col, S32 new_width);
     S32             getTotalStaticColumnWidth() { return mTotalStaticColumnWidth; }
 
     std::string     getSortColumnName();
-    BOOL            getSortAscending() { return mSortColumns.empty() ? TRUE : mSortColumns.back().second; }
-    BOOL            hasSortOrder() const;
+    bool            getSortAscending() { return mSortColumns.empty() ? true : mSortColumns.back().second; }
+    bool            hasSortOrder() const;
     void            clearSortOrder();
 
-    void            setAlternateSort() { mAlternateSort = TRUE; }
+    void            setAlternateSort() { mAlternateSort = true; }
 
-    void            selectPrevItem(BOOL extend_selection = FALSE);
-    void            selectNextItem(BOOL extend_selection = FALSE);
+    void            selectPrevItem(bool extend_selection = false);
+    void            selectNextItem(bool extend_selection = false);
     S32             selectMultiple(uuid_vec_t ids);
     // conceptually const, but mutates mItemList
     void            updateSort() const;
     // sorts a list without affecting the permanent sort order (so further list insertions can be unsorted, for example)
-    void            sortOnce(S32 column, BOOL ascending);
+    void            sortOnce(S32 column, bool ascending);
 
     // manually call this whenever editing list items in place to flag need for resorting
     void            setNeedsSort(bool val = true) { mSorted = !val; }
@@ -447,8 +447,8 @@ protected:
     // (except in the case that the addItem() call fails, in which case it is up
     // to the caller to delete the item)
     //
-    // returns FALSE if item faile to be added to list, does NOT delete 'item'
-    BOOL            addItem( LLScrollListItem* item, EAddPosition pos = ADD_BOTTOM, BOOL requires_column = TRUE );
+    // returns false if item faile to be added to list, does NOT delete 'item'
+    bool            addItem( LLScrollListItem* item, EAddPosition pos = ADD_BOTTOM, bool requires_column = true );
 
     typedef std::deque<LLScrollListItem *> item_list;
     item_list&      getItemList() { return mItemList; }
@@ -460,11 +460,11 @@ private:
 
     void            updateLineHeightInsert(LLScrollListItem* item);
     void            reportInvalidInput();
-    BOOL            isRepeatedChars(const LLWString& string) const;
-    void            selectItem(LLScrollListItem* itemp, S32 cell, BOOL single_select = TRUE);
+    bool            isRepeatedChars(const LLWString& string) const;
+    void            selectItem(LLScrollListItem* itemp, S32 cell, bool single_select = true);
     void            deselectItem(LLScrollListItem* itemp);
     void            commitIfChanged();
-    BOOL            setSort(S32 column, BOOL ascending);
+    bool            setSort(S32 column, bool ascending);
     S32             getLinesPerPage();
 
     static void     showProfile(std::string id, bool is_group);
@@ -508,8 +508,8 @@ private:
     S32             mColumnPadding;
     S32             mRowPadding;
 
-    BOOL            mBackgroundVisible;
-    BOOL            mDrawStripes;
+    bool            mBackgroundVisible;
+    bool            mDrawStripes;
 
     LLUIColor       mBgWriteableColor;
     LLUIColor       mBgReadOnlyColor;
@@ -553,7 +553,7 @@ private:
     typedef std::vector<LLScrollListColumn*> ordered_columns_t;
     ordered_columns_t   mColumnsIndexed;
 
-    typedef std::pair<S32, BOOL> sort_column_t;
+    typedef std::pair<S32, bool> sort_column_t;
     std::vector<sort_column_t>  mSortColumns;
 
     sort_signal_t*  mSortCallback;
diff --git a/indra/llui/llscrolllistitem.cpp b/indra/llui/llscrolllistitem.cpp
index a928a57465..0d79d19a37 100644
--- a/indra/llui/llscrolllistitem.cpp
+++ b/indra/llui/llscrolllistitem.cpp
@@ -38,8 +38,8 @@
 //---------------------------------------------------------------------------
 
 LLScrollListItem::LLScrollListItem( const Params& p )
-:   mSelected(FALSE),
-    mHighlighted(FALSE),
+:   mSelected(false),
+    mHighlighted(false),
     mHoverIndex(-1),
     mSelectedIndex(-1),
     mEnabled(p.enabled),
@@ -56,13 +56,13 @@ LLScrollListItem::~LLScrollListItem()
     mColumns.clear();
 }
 
-void LLScrollListItem::setSelected(BOOL b)
+void LLScrollListItem::setSelected(bool b)
 {
     mSelected = b;
     mSelectedIndex = -1;
 }
 
-void LLScrollListItem::setHighlighted(BOOL b)
+void LLScrollListItem::setHighlighted(bool b)
 {
     mHighlighted = b;
     mHoverIndex = -1;
@@ -85,7 +85,7 @@ void LLScrollListItem::addColumn(const LLScrollListCell::Params& p)
 
 void LLScrollListItem::setNumColumns(S32 columns)
 {
-    S32 prev_columns = mColumns.size();
+    auto prev_columns = mColumns.size();
     if (columns < prev_columns)
     {
         std::for_each(mColumns.begin()+columns, mColumns.end(), DeletePointer());
@@ -93,7 +93,7 @@ void LLScrollListItem::setNumColumns(S32 columns)
 
     mColumns.resize(columns);
 
-    for (S32 col = prev_columns; col < columns; ++col)
+    for (auto col = prev_columns; col < columns; ++col)
     {
         mColumns[col] = NULL;
     }
@@ -115,7 +115,7 @@ void LLScrollListItem::setColumn( S32 column, LLScrollListCell *cell )
 
 S32 LLScrollListItem::getNumColumns() const
 {
-    return mColumns.size();
+    return static_cast<S32>(mColumns.size());
 }
 
 LLScrollListCell* LLScrollListItem::getColumn(const S32 i) const
diff --git a/indra/llui/llscrolllistitem.h b/indra/llui/llscrolllistitem.h
index 8a78efbd7c..ee8a8bb556 100644
--- a/indra/llui/llscrolllistitem.h
+++ b/indra/llui/llscrolllistitem.h
@@ -79,14 +79,14 @@ public:
 
     virtual ~LLScrollListItem();
 
-    void    setSelected( BOOL b );
-    BOOL    getSelected() const             { return mSelected; }
+    void    setSelected( bool b );
+    bool    getSelected() const             { return mSelected; }
 
-    void    setEnabled( BOOL b )            { mEnabled = b; }
-    BOOL    getEnabled() const              { return mEnabled; }
+    void    setEnabled( bool b )            { mEnabled = b; }
+    bool    getEnabled() const              { return mEnabled; }
 
-    void    setHighlighted( BOOL b );
-    BOOL    getHighlighted() const          { return mHighlighted; }
+    void    setHighlighted( bool b );
+    bool    getHighlighted() const          { return mHighlighted; }
 
     void    setSelectedCell( S32 cell );
     S32     getSelectedCell() const         { return mSelectedIndex; }
@@ -127,11 +127,11 @@ protected:
     LLScrollListItem( const Params& );
 
 private:
-    BOOL    mSelected;
-    BOOL    mHighlighted;
+    bool    mSelected;
+    bool    mHighlighted;
     S32     mHoverIndex;
     S32     mSelectedIndex;
-    BOOL    mEnabled;
+    bool    mEnabled;
     void*   mUserdata;
     LLSD    mItemValue;
     LLSD    mItemAltValue;
diff --git a/indra/llui/llsearcheditor.cpp b/indra/llui/llsearcheditor.cpp
index 9a35c628af..a0c1e9d0c0 100644
--- a/indra/llui/llsearcheditor.cpp
+++ b/indra/llui/llsearcheditor.cpp
@@ -72,7 +72,7 @@ LLSearchEditor::LLSearchEditor(const LLSearchEditor::Params& p)
     line_editor_params.keystroke_callback(boost::bind(&LLSearchEditor::handleKeystroke, this));
 
     mSearchEditor = LLUICtrlFactory::create<LLLineEditor>(line_editor_params);
-    mSearchEditor->setPassDelete(TRUE);
+    mSearchEditor->setPassDelete(true);
     addChild(mSearchEditor);
 
     if (p.search_button_visible)
@@ -106,6 +106,10 @@ LLSearchEditor::LLSearchEditor(const LLSearchEditor::Params& p)
 
 LLSearchEditor::~LLSearchEditor()
 {
+    mKeystrokeCallback = NULL;
+    mTextChangedCallback = NULL;
+    setCommitOnFocusLost(false);
+
     mSearchButton = NULL;
     mClearButton = NULL;
     mSearchEditor->deleteAllChildren();
@@ -148,13 +152,13 @@ LLSD LLSearchEditor::getValue() const
 }
 
 //virtual
-BOOL LLSearchEditor::setTextArg( const std::string& key, const LLStringExplicit& text )
+bool LLSearchEditor::setTextArg( const std::string& key, const LLStringExplicit& text )
 {
     return mSearchEditor->setTextArg(key, text);
 }
 
 //virtual
-BOOL LLSearchEditor::setLabelArg( const std::string& key, const LLStringExplicit& text )
+bool LLSearchEditor::setLabelArg( const std::string& key, const LLStringExplicit& text )
 {
     return mSearchEditor->setLabelArg(key, text);
 }
@@ -175,7 +179,7 @@ void LLSearchEditor::clear()
 }
 
 //virtual
-void LLSearchEditor::setFocus( BOOL b )
+void LLSearchEditor::setFocus( bool b )
 {
     if (mSearchEditor)
     {
diff --git a/indra/llui/llsearcheditor.h b/indra/llui/llsearcheditor.h
index 26f6b72aa3..d99dc6f200 100644
--- a/indra/llui/llsearcheditor.h
+++ b/indra/llui/llsearcheditor.h
@@ -67,7 +67,7 @@ public:
         {}
     };
 
-    void setCommitOnFocusLost(BOOL b)   { if (mSearchEditor) mSearchEditor->setCommitOnFocusLost(b); }
+    void setCommitOnFocusLost(bool b)   { if (mSearchEditor) mSearchEditor->setCommitOnFocusLost(b); }
 
 protected:
     LLSearchEditor(const Params&);
@@ -84,11 +84,11 @@ public:
     // LLUICtrl interface
     virtual void    setValue(const LLSD& value );
     virtual LLSD    getValue() const;
-    virtual BOOL    setTextArg( const std::string& key, const LLStringExplicit& text );
-    virtual BOOL    setLabelArg( const std::string& key, const LLStringExplicit& text );
+    virtual bool    setTextArg( const std::string& key, const LLStringExplicit& text );
+    virtual bool    setLabelArg( const std::string& key, const LLStringExplicit& text );
     virtual void    setLabel( const LLStringExplicit &new_label );
     virtual void    clear();
-    virtual void    setFocus( BOOL b );
+    virtual void    setFocus( bool b );
 
     void            setKeystrokeCallback( commit_callback_t cb ) { mKeystrokeCallback = cb; }
     void            setTextChangedCallback( commit_callback_t cb ) { mTextChangedCallback = cb; }
diff --git a/indra/llui/llslider.cpp b/indra/llui/llslider.cpp
index ed8d508ba3..0507733fd8 100644
--- a/indra/llui/llslider.cpp
+++ b/indra/llui/llslider.cpp
@@ -93,7 +93,7 @@ LLSlider::~LLSlider()
     delete mMouseUpSignal;
 }
 
-void LLSlider::setValue(F32 value, BOOL from_event)
+void LLSlider::setValue(F32 value, bool from_event)
 {
     value = llclamp( value, mMinValue, mMaxValue );
 
@@ -157,7 +157,7 @@ void LLSlider::setValueAndCommit(F32 value)
 }
 
 
-BOOL LLSlider::handleHover(S32 x, S32 y, MASK mask)
+bool LLSlider::handleHover(S32 x, S32 y, MASK mask)
 {
     if( hasMouseCapture() )
     {
@@ -193,12 +193,12 @@ BOOL LLSlider::handleHover(S32 x, S32 y, MASK mask)
         getWindow()->setCursor(UI_CURSOR_ARROW);
         LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (inactive)" << LL_ENDL;
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLSlider::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLSlider::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if( hasMouseCapture() )
     {
@@ -207,23 +207,23 @@ BOOL LLSlider::handleMouseUp(S32 x, S32 y, MASK mask)
         if (mMouseUpSignal)
             (*mMouseUpSignal)( this, getValueF32() );
 
-        handled = TRUE;
+        handled = true;
         make_ui_sound("UISndClickRelease");
     }
     else
     {
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
 }
 
-BOOL LLSlider::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLSlider::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // only do sticky-focus on non-chrome widgets
     if (!getIsChrome())
     {
-        setFocus(TRUE);
+        setFocus(true);
     }
     if (mMouseDownSignal)
         (*mMouseDownSignal)( this, getValueF32() );
@@ -253,23 +253,23 @@ BOOL LLSlider::handleMouseDown(S32 x, S32 y, MASK mask)
     }
     make_ui_sound("UISndClick");
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLSlider::handleKeyHere(KEY key, MASK mask)
+bool LLSlider::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     switch(key)
     {
     case KEY_DOWN:
     case KEY_LEFT:
         setValueAndCommit(getValueF32() - getIncrement());
-        handled = TRUE;
+        handled = true;
         break;
     case KEY_UP:
     case KEY_RIGHT:
         setValueAndCommit(getValueF32() + getIncrement());
-        handled = TRUE;
+        handled = true;
         break;
     default:
         break;
@@ -277,13 +277,13 @@ BOOL LLSlider::handleKeyHere(KEY key, MASK mask)
     return handled;
 }
 
-BOOL LLSlider::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLSlider::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if ( mOrientation == VERTICAL )
     {
         F32 new_val = getValueF32() - clicks * getIncrement();
         setValueAndCommit(new_val);
-        return TRUE;
+        return true;
     }
     return LLF32UICtrl::handleScrollWheel(x,y,clicks);
 }
diff --git a/indra/llui/llslider.h b/indra/llui/llslider.h
index 4f4acdc50c..03fad5a05d 100644
--- a/indra/llui/llslider.h
+++ b/indra/llui/llslider.h
@@ -60,9 +60,9 @@ protected:
     friend class LLUICtrlFactory;
 public:
     virtual ~LLSlider();
-    void            setValue( F32 value, BOOL from_event = FALSE );
+    void            setValue( F32 value, bool from_event = false );
     // overrides for LLF32UICtrl methods
-    virtual void    setValue(const LLSD& value )    { setValue((F32)value.asReal(), TRUE); }
+    virtual void    setValue(const LLSD& value )    { setValue((F32)value.asReal(), true); }
 
     virtual void    setMinValue(const LLSD& min_value) { setMinValue((F32)min_value.asReal()); }
     virtual void    setMaxValue(const LLSD& max_value) { setMaxValue((F32)max_value.asReal()); }
@@ -72,18 +72,18 @@ public:
     boost::signals2::connection setMouseDownCallback( const commit_signal_t::slot_type& cb );
     boost::signals2::connection setMouseUpCallback( const commit_signal_t::slot_type& cb );
 
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleKeyHere(KEY key, MASK mask);
-    virtual BOOL    handleScrollWheel(S32 x, S32 y, S32 clicks);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleKeyHere(KEY key, MASK mask);
+    virtual bool    handleScrollWheel(S32 x, S32 y, S32 clicks);
     virtual void    draw();
 
 private:
     void            setValueAndCommit(F32 value);
     void            updateThumbRect();
 
-    BOOL            mVolumeSlider;
+    bool            mVolumeSlider;
     S32             mMouseOffset;
     LLRect          mDragStartThumbRect;
 
diff --git a/indra/llui/llsliderctrl.cpp b/indra/llui/llsliderctrl.cpp
index e16ba9408e..22579205d8 100644
--- a/indra/llui/llsliderctrl.cpp
+++ b/indra/llui/llsliderctrl.cpp
@@ -173,7 +173,7 @@ LLSliderCtrl::LLSliderCtrl(const LLSliderCtrl::Params& p)
             mEditor->setFocusReceivedCallback( boost::bind(&LLSliderCtrl::onEditorGainFocus, _1, this ));
             // don't do this, as selecting the entire text is single clicking in some cases
             // and double clicking in others
-            //mEditor->setSelectAllonFocusReceived(TRUE);
+            //mEditor->setSelectAllonFocusReceived(true);
             addChild(mEditor);
         }
         else
@@ -210,16 +210,16 @@ void LLSliderCtrl::onEditorGainFocus( LLFocusableElement* caller, void *userdata
 }
 
 
-void LLSliderCtrl::setValue(F32 v, BOOL from_event)
+void LLSliderCtrl::setValue(F32 v, bool from_event)
 {
     mSlider->setValue( v, from_event );
     mValue = mSlider->getValueF32();
     updateText();
 }
 
-BOOL LLSliderCtrl::setLabelArg( const std::string& key, const LLStringExplicit& text )
+bool LLSliderCtrl::setLabelArg( const std::string& key, const LLStringExplicit& text )
 {
-    BOOL res = FALSE;
+    bool res = false;
     if (mLabelBox)
     {
         res = mLabelBox->setTextArg(key, text);
@@ -319,7 +319,7 @@ void LLSliderCtrl::onEditorCommit( LLUICtrl* ctrl, const LLSD& userdata )
     if (!self)
         return;
 
-    BOOL success = FALSE;
+    bool success = false;
     F32 val = self->mValue;
     F32 saved_val = self->mValue;
 
@@ -333,7 +333,7 @@ void LLSliderCtrl::onEditorCommit( LLUICtrl* ctrl, const LLSD& userdata )
             self->setValue( val );  // set the value temporarily so that the callback can retrieve it.
             if( !self->mValidateSignal || (*(self->mValidateSignal))( self, val ) )
             {
-                success = TRUE;
+                success = true;
             }
         }
     }
@@ -362,14 +362,14 @@ void LLSliderCtrl::onSliderCommit( LLUICtrl* ctrl, const LLSD& userdata )
     if (!self)
         return;
 
-    BOOL success = FALSE;
+    bool success = false;
     F32 saved_val = self->mValue;
     F32 new_val = self->mSlider->getValueF32();
 
     self->mValue = new_val;  // set the value temporarily so that the callback can retrieve it.
     if( !self->mValidateSignal || (*(self->mValidateSignal))( self, new_val ) )
     {
-        success = TRUE;
+        success = true;
     }
 
     if( success )
@@ -387,7 +387,7 @@ void LLSliderCtrl::onSliderCommit( LLUICtrl* ctrl, const LLSD& userdata )
     self->updateText();
 }
 
-void LLSliderCtrl::setEnabled(BOOL b)
+void LLSliderCtrl::setEnabled(bool b)
 {
     LLView::setEnabled( b );
 
@@ -410,7 +410,7 @@ void LLSliderCtrl::setEnabled(BOOL b)
 }
 
 
-void LLSliderCtrl::setTentative(BOOL b)
+void LLSliderCtrl::setTentative(bool b)
 {
     if( mEditor )
     {
@@ -422,11 +422,11 @@ void LLSliderCtrl::setTentative(BOOL b)
 
 void LLSliderCtrl::onCommit()
 {
-    setTentative(FALSE);
+    setTentative(false);
 
     if( mEditor )
     {
-        mEditor->setTentative(FALSE);
+        mEditor->setTentative(false);
     }
 
     setControlValue(getValueF32());
@@ -440,7 +440,7 @@ void LLSliderCtrl::setRect(const LLRect& rect)
 }
 
 //virtual
-void LLSliderCtrl::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLSliderCtrl::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLF32UICtrl::reshape(width, height, called_from_parent);
     updateSliderRect();
diff --git a/indra/llui/llsliderctrl.h b/indra/llui/llsliderctrl.h
index 48e59045a7..a55e3bf6e9 100644
--- a/indra/llui/llsliderctrl.h
+++ b/indra/llui/llsliderctrl.h
@@ -84,17 +84,17 @@ public:
     virtual ~LLSliderCtrl();
 
     /*virtual*/ F32 getValueF32() const { return mSlider->getValueF32(); }
-    void            setValue(F32 v, BOOL from_event = FALSE);
+    void            setValue(F32 v, bool from_event = false);
 
-    /*virtual*/ void    setValue(const LLSD& value) { setValue((F32)value.asReal(), TRUE); }
+    /*virtual*/ void    setValue(const LLSD& value) { setValue((F32)value.asReal(), true); }
     /*virtual*/ LLSD    getValue() const            { return LLSD(getValueF32()); }
-    /*virtual*/ BOOL    setLabelArg( const std::string& key, const LLStringExplicit& text );
+    /*virtual*/ bool    setLabelArg( const std::string& key, const LLStringExplicit& text );
 
-    BOOL            isMouseHeldDown() const { return mSlider->hasMouseCapture(); }
+    bool            isMouseHeldDown() const { return mSlider->hasMouseCapture(); }
 
     virtual void    setPrecision(S32 precision);
 
-    /*virtual*/ void    setEnabled( BOOL b );
+    /*virtual*/ void    setEnabled( bool b );
     /*virtual*/ void    clear();
 
     /*virtual*/ void    setMinValue(const LLSD& min_value)  { setMinValue((F32)min_value.asReal()); }
@@ -116,7 +116,7 @@ public:
 
     /*virtual*/ void    onTabInto();
 
-    /*virtual*/ void    setTentative(BOOL b);           // marks value as tentative
+    /*virtual*/ void    setTentative(bool b);           // marks value as tentative
     /*virtual*/ void    onCommit();                     // mark not tentative, then commit
 
     /*virtual*/ void    setControlName(const std::string& control_name, LLView* context)
@@ -126,7 +126,7 @@ public:
     }
 
     /*virtual*/ void    setRect(const LLRect& rect);
-    /*virtual*/ void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void    reshape(S32 width, S32 height, bool called_from_parent = true);
 
     static void     onSliderCommit(LLUICtrl* caller, const LLSD& userdata);
 
@@ -154,8 +154,8 @@ private:
 
     const LLFontGL* mFont;
     const LLFontGL* mLabelFont;
-    BOOL            mShowText;
-    BOOL            mCanEditText;
+    bool            mShowText;
+    bool            mCanEditText;
 
     S32             mPrecision;
     LLTextBox*      mLabelBox;
diff --git a/indra/llui/llspellcheck.cpp b/indra/llui/llspellcheck.cpp
index b8aeb3b91f..1615db5b52 100644
--- a/indra/llui/llspellcheck.cpp
+++ b/indra/llui/llspellcheck.cpp
@@ -94,7 +94,7 @@ S32 LLSpellChecker::getSuggestions(const std::string& word, std::vector<std::str
         }
         mHunspell->free_list(&suggestion_list, suggestion_cnt);
     }
-    return suggestions.size();
+    return static_cast<S32>(suggestions.size());
 }
 
 const LLSD LLSpellChecker::getDictionaryData(const std::string& dict_language)
diff --git a/indra/llui/llspinctrl.cpp b/indra/llui/llspinctrl.cpp
index 888edd093e..7d41d80334 100644
--- a/indra/llui/llspinctrl.cpp
+++ b/indra/llui/llspinctrl.cpp
@@ -63,7 +63,7 @@ LLSpinCtrl::Params::Params()
 LLSpinCtrl::LLSpinCtrl(const LLSpinCtrl::Params& p)
 :   LLF32UICtrl(p),
     mLabelBox(NULL),
-    mbHasBeenSet( FALSE ),
+    mbHasBeenSet( false ),
     mPrecision(p.decimal_digits),
     mTextEnabledColor(p.text_enabled_color()),
     mTextDisabledColor(p.text_disabled_color())
@@ -143,12 +143,12 @@ LLSpinCtrl::LLSpinCtrl(const LLSpinCtrl::Params& p)
     //RN: this seems to be a BAD IDEA, as it makes the editor behavior different when it has focus
     // than when it doesn't.  Instead, if you always have to double click to select all the text,
     // it's easier to understand
-    //mEditor->setSelectAllonFocusReceived(TRUE);
-    mEditor->setSelectAllonCommit(FALSE);
+    //mEditor->setSelectAllonFocusReceived(true);
+    mEditor->setSelectAllonCommit(false);
     addChild(mEditor);
 
     updateEditor();
-    setUseBoundingRect( TRUE );
+    setUseBoundingRect( true );
 }
 
 F32 clamp_precision(F32 value, S32 decimal_precision)
@@ -275,7 +275,7 @@ void LLSpinCtrl::setValue(const LLSD& value )
     F32 v = (F32)value.asReal();
     if (getValueF32() != v || !mbHasBeenSet)
     {
-        mbHasBeenSet = TRUE;
+        mbHasBeenSet = true;
         LLF32UICtrl::setValue(value);
 
         if (!mEditor->hasFocus())
@@ -291,7 +291,7 @@ void LLSpinCtrl::forceSetValue(const LLSD& value )
     F32 v = (F32)value.asReal();
     if (getValueF32() != v || !mbHasBeenSet)
     {
-        mbHasBeenSet = TRUE;
+        mbHasBeenSet = true;
         LLF32UICtrl::setValue(value);
 
         updateEditor();
@@ -303,7 +303,7 @@ void LLSpinCtrl::clear()
 {
     setValue(mMinValue);
     mEditor->clear();
-    mbHasBeenSet = FALSE;
+    mbHasBeenSet = false;
 }
 
 void LLSpinCtrl::updateLabelColor()
@@ -333,7 +333,7 @@ void LLSpinCtrl::updateEditor()
 
 void LLSpinCtrl::onEditorCommit( const LLSD& data )
 {
-    BOOL success = FALSE;
+    bool success = false;
 
     if( mEditor->evaluateFloat() )
     {
@@ -349,7 +349,7 @@ void LLSpinCtrl::onEditorCommit( const LLSD& data )
         setValue(val);
         if( !mValidateSignal || (*mValidateSignal)( this, val ) )
         {
-            success = TRUE;
+            success = true;
             onCommit();
         }
         else
@@ -378,13 +378,13 @@ void LLSpinCtrl::forceEditorCommit()
 }
 
 
-void LLSpinCtrl::setFocus(BOOL b)
+void LLSpinCtrl::setFocus(bool b)
 {
     LLUICtrl::setFocus( b );
     mEditor->setFocus( b );
 }
 
-void LLSpinCtrl::setEnabled(BOOL b)
+void LLSpinCtrl::setEnabled(bool b)
 {
     LLView::setEnabled( b );
     mEditor->setEnabled( b );
@@ -392,14 +392,14 @@ void LLSpinCtrl::setEnabled(BOOL b)
 }
 
 
-void LLSpinCtrl::setTentative(BOOL b)
+void LLSpinCtrl::setTentative(bool b)
 {
     mEditor->setTentative(b);
     LLUICtrl::setTentative(b);
 }
 
 
-BOOL LLSpinCtrl::isMouseHeldDown() const
+bool LLSpinCtrl::isMouseHeldDown() const
 {
     return
         mDownBtn->hasMouseCapture()
@@ -408,7 +408,7 @@ BOOL LLSpinCtrl::isMouseHeldDown() const
 
 void LLSpinCtrl::onCommit()
 {
-    setTentative(FALSE);
+    setTentative(false);
     setControlValue(getValueF32());
     LLF32UICtrl::onCommit();
 }
@@ -439,7 +439,7 @@ void LLSpinCtrl::setLabel(const LLStringExplicit& label)
     updateLabelColor();
 }
 
-void LLSpinCtrl::setAllowEdit(BOOL allow_edit)
+void LLSpinCtrl::setAllowEdit(bool allow_edit)
 {
     mEditor->setEnabled(allow_edit);
     mAllowEdit = allow_edit;
@@ -457,7 +457,7 @@ void LLSpinCtrl::reportInvalidData()
     make_ui_sound("UISndBadKeystroke");
 }
 
-BOOL LLSpinCtrl::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLSpinCtrl::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if( clicks > 0 )
     {
@@ -472,10 +472,10 @@ BOOL LLSpinCtrl::handleScrollWheel(S32 x, S32 y, S32 clicks)
         onUpBtn(getValue());
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLSpinCtrl::handleKeyHere(KEY key, MASK mask)
+bool LLSpinCtrl::handleKeyHere(KEY key, MASK mask)
 {
     if (mEditor->hasFocus())
     {
@@ -485,20 +485,20 @@ BOOL LLSpinCtrl::handleKeyHere(KEY key, MASK mask)
             // but not allowing revert on a spinner seems dangerous
             updateEditor();
             mEditor->resetScrollPosition();
-            mEditor->setFocus(FALSE);
-            return TRUE;
+            mEditor->setFocus(false);
+            return true;
         }
         if(key == KEY_UP)
         {
             onUpBtn(getValue());
-            return TRUE;
+            return true;
         }
         if(key == KEY_DOWN)
         {
             onDownBtn(getValue());
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
diff --git a/indra/llui/llspinctrl.h b/indra/llui/llspinctrl.h
index 7eddc2ce4e..75f1830d80 100644
--- a/indra/llui/llspinctrl.h
+++ b/indra/llui/llspinctrl.h
@@ -66,12 +66,12 @@ public:
             F32     get() const { return getValueF32(); }
             void    set(F32 value) { setValue(value); mInitialValue = value; }
 
-    BOOL            isMouseHeldDown() const;
+    bool            isMouseHeldDown() const;
 
-    virtual void    setEnabled( BOOL b );
-    virtual void    setFocus( BOOL b );
+    virtual void    setEnabled( bool b );
+    virtual void    setFocus( bool b );
     virtual void    clear();
-    virtual BOOL    isDirty() const { return( getValueF32() != mInitialValue ); }
+    virtual bool    isDirty() const { return( getValueF32() != mInitialValue ); }
     virtual void    resetDirty() { mInitialValue = getValueF32(); }
 
     virtual void    setPrecision(S32 precision);
@@ -79,17 +79,17 @@ public:
     void            setLabel(const LLStringExplicit& label);
     void            setLabelColor(const LLColor4& c)            { mTextEnabledColor = c; updateLabelColor(); }
     void            setDisabledLabelColor(const LLColor4& c)    { mTextDisabledColor = c; updateLabelColor();}
-    void            setAllowEdit(BOOL allow_edit);
+    void            setAllowEdit(bool allow_edit);
 
     virtual void    onTabInto();
 
-    virtual void    setTentative(BOOL b);           // marks value as tentative
+    virtual void    setTentative(bool b);           // marks value as tentative
     virtual void    onCommit();                     // mark not tentative, then commit
 
     void            forceEditorCommit();            // for commit on external button
 
-    virtual BOOL    handleScrollWheel(S32 x,S32 y,S32 clicks);
-    virtual BOOL    handleKeyHere(KEY key, MASK mask);
+    virtual bool    handleScrollWheel(S32 x,S32 y,S32 clicks);
+    virtual bool    handleKeyHere(KEY key, MASK mask);
 
     void            onEditorCommit(const LLSD& data);
     static void     onEditorGainFocus(LLFocusableElement* caller, void *userdata);
@@ -117,8 +117,8 @@ private:
     class LLButton*     mUpBtn;
     class LLButton*     mDownBtn;
 
-    BOOL            mbHasBeenSet;
-    BOOL            mAllowEdit;
+    bool            mbHasBeenSet;
+    bool            mAllowEdit;
 };
 
 #endif  // LL_LLSPINCTRL_H
diff --git a/indra/llui/llstatbar.cpp b/indra/llui/llstatbar.cpp
index 5ea2eaabcd..adb1d51813 100644
--- a/indra/llui/llstatbar.cpp
+++ b/indra/llui/llstatbar.cpp
@@ -209,7 +209,7 @@ LLStatBar::LLStatBar(const Params& p)
     setStat(p.stat);
 }
 
-BOOL LLStatBar::handleHover(S32 x, S32 y, MASK mask)
+bool LLStatBar::handleHover(S32 x, S32 y, MASK mask)
 {
     switch(mStatType)
     {
@@ -225,38 +225,38 @@ BOOL LLStatBar::handleHover(S32 x, S32 y, MASK mask)
     default:
         break;
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLStatBar::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLStatBar::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLView::handleMouseDown(x, y, mask);
+    bool handled = LLView::handleMouseDown(x, y, mask);
     if (!handled)
     {
         if (mDisplayBar)
         {
             if (mDisplayHistory || mOrientation == HORIZONTAL)
             {
-                mDisplayBar = FALSE;
-                mDisplayHistory = FALSE;
+                mDisplayBar = false;
+                mDisplayHistory = false;
             }
             else
             {
-                mDisplayHistory = TRUE;
+                mDisplayHistory = true;
             }
         }
         else
         {
-            mDisplayBar = TRUE;
+            mDisplayBar = true;
             if (mOrientation == HORIZONTAL)
             {
-                mDisplayHistory = TRUE;
+                mDisplayHistory = true;
             }
         }
         LLView* parent = getParent();
-        parent->reshape(parent->getRect().getWidth(), parent->getRect().getHeight(), FALSE);
+        parent->reshape(parent->getRect().getWidth(), parent->getRect().getHeight(), false);
     }
-    return TRUE;
+    return true;
 }
 
 template<typename T>
@@ -455,7 +455,7 @@ void LLStatBar::draw()
 
             if (mDisplayHistory && mStat.valid)
             {
-                const S32 num_values = frame_recording.getNumRecordedPeriods() - 1;
+                const S32 num_values = static_cast<S32>(frame_recording.getNumRecordedPeriods()) - 1;
                 F32 min_value = 0.f,
                     max_value = 0.f;
 
diff --git a/indra/llui/llstatbar.h b/indra/llui/llstatbar.h
index e398c41601..c36a138566 100644
--- a/indra/llui/llstatbar.h
+++ b/indra/llui/llstatbar.h
@@ -61,8 +61,8 @@ public:
     LLStatBar(const Params&);
 
     virtual void draw();
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL handleHover(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleHover(S32 x, S32 y, MASK mask);
 
     void setStat(const std::string& stat_name);
 
diff --git a/indra/llui/llstatgraph.cpp b/indra/llui/llstatgraph.cpp
index bf08055554..d37f927073 100644
--- a/indra/llui/llstatgraph.cpp
+++ b/indra/llui/llstatgraph.cpp
@@ -104,14 +104,14 @@ void LLStatGraph::draw()
 
     color = LLUIColorTable::instance().getColor( "MenuDefaultBgColor" );
     gGL.color4fv(color.mV);
-    gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, TRUE);
+    gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, true);
 
     gGL.color4fv(LLColor4::black.mV);
-    gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, FALSE);
+    gl_rect_2d(0, getRect().getHeight(), getRect().getWidth(), 0, false);
 
     color = it->mColor;
     gGL.color4fv(color.mV);
-    gl_rect_2d(1, ll_round(frac*getRect().getHeight()), getRect().getWidth() - 1, 0, TRUE);
+    gl_rect_2d(1, ll_round(frac*getRect().getHeight()), getRect().getWidth() - 1, 0, true);
 }
 
 void LLStatGraph::setMin(const F32 min)
diff --git a/indra/llui/llstatgraph.h b/indra/llui/llstatgraph.h
index 679cd72cd4..c254821870 100644
--- a/indra/llui/llstatgraph.h
+++ b/indra/llui/llstatgraph.h
@@ -106,7 +106,7 @@ public:
 private:
     LLTrace::StatType<LLTrace::CountAccumulator>*   mNewStatFloatp;
 
-    BOOL mPerSec;
+    bool mPerSec;
 
     F32 mValue;
 
diff --git a/indra/llui/llstatview.cpp b/indra/llui/llstatview.cpp
index 377474084d..1c7656ecd2 100644
--- a/indra/llui/llstatview.cpp
+++ b/indra/llui/llstatview.cpp
@@ -40,7 +40,7 @@ LLStatView::LLStatView(const LLStatView::Params& p)
 :   LLContainerView(p),
     mSetting(p.setting)
 {
-    BOOL isopen = getDisplayChildren();
+    bool isopen = getDisplayChildren();
     if (mSetting.length() > 0)
     {
         isopen = LLUI::getInstance()->mSettingGroups["config"]->getBOOL(mSetting);
@@ -53,7 +53,7 @@ LLStatView::~LLStatView()
     // Children all cleaned up by default view destructor.
     if (mSetting.length() > 0)
     {
-        BOOL isopen = getDisplayChildren();
+        bool isopen = getDisplayChildren();
         LLUI::getInstance()->mSettingGroups["config"]->setBOOL(mSetting, isopen);
     }
 }
diff --git a/indra/llui/llstyle.cpp b/indra/llui/llstyle.cpp
index a8c0aa8ad6..abf6e1284b 100644
--- a/indra/llui/llstyle.cpp
+++ b/indra/llui/llstyle.cpp
@@ -73,17 +73,17 @@ void LLStyle::setLinkHREF(const std::string& href)
     mLink = href;
 }
 
-BOOL LLStyle::isLink() const
+bool LLStyle::isLink() const
 {
     return mIsLink;
 }
 
-BOOL LLStyle::isVisible() const
+bool LLStyle::isVisible() const
 {
     return mVisible;
 }
 
-void LLStyle::setVisible(BOOL is_visible)
+void LLStyle::setVisible(bool is_visible)
 {
     mVisible = is_visible;
 }
diff --git a/indra/llui/llstyle.h b/indra/llui/llstyle.h
index 2a60bd265e..7dbccfff87 100644
--- a/indra/llui/llstyle.h
+++ b/indra/llui/llstyle.h
@@ -61,8 +61,8 @@ public:
     const LLUIColor& getSelectedColor() const { return mSelectedColor; }
     void setSelectedColor(const LLUIColor& color) { mSelectedColor = color; }
 
-    BOOL isVisible() const;
-    void setVisible(BOOL is_visible);
+    bool isVisible() const;
+    void setVisible(bool is_visible);
 
     LLFontGL::ShadowType getShadowType() const { return mDropShadow; }
 
@@ -71,13 +71,13 @@ public:
 
     const std::string& getLinkHREF() const { return mLink; }
     void setLinkHREF(const std::string& href);
-    BOOL isLink() const;
+    bool isLink() const;
 
     LLPointer<LLUIImage> getImage() const;
     void setImage(const LLUUID& src);
     void setImage(const std::string& name);
 
-    BOOL isImage() const { return mImagep.notNull(); }
+    bool isImage() const { return mImagep.notNull(); }
 
     bool operator==(const LLStyle &rhs) const
     {
@@ -101,7 +101,7 @@ protected:
     ~LLStyle() { }
 
 private:
-    BOOL                mVisible;
+    bool                mVisible;
     LLUIColor           mColor;
     LLUIColor           mReadOnlyColor;
     LLUIColor           mSelectedColor;
diff --git a/indra/llui/lltabcontainer.cpp b/indra/llui/lltabcontainer.cpp
index 78c4f3c03c..06f584d372 100644
--- a/indra/llui/lltabcontainer.cpp
+++ b/indra/llui/lltabcontainer.cpp
@@ -75,7 +75,7 @@ public:
         mTabContainer(c),
         mTabPanel(p),
         mButton(b),
-        mOldState(FALSE),
+        mOldState(false),
         mPlaceholderText(placeholder),
         mPadding(0),
         mVisible(true)
@@ -84,7 +84,7 @@ public:
     LLTabContainer*  mTabContainer;
     LLPanel*         mTabPanel;
     LLButton*        mButton;
-    BOOL             mOldState;
+    bool             mOldState;
     LLTextBox*       mPlaceholderText;
     S32              mPadding;
 
@@ -233,7 +233,7 @@ LLTabContainer::LLTabContainer(const LLTabContainer::Params& p)
 :   LLPanel(p),
     mCurrentTabIdx(-1),
     mTabsHidden(p.hide_tabs),
-    mScrolled(FALSE),
+    mScrolled(false),
     mScrollPos(0),
     mScrollPosPixels(0),
     mMaxScrollPos(0),
@@ -308,14 +308,14 @@ void LLTabContainer::setValue(const LLSD& value)
 }
 
 //virtual
-void LLTabContainer::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLTabContainer::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLPanel::reshape( width, height, called_from_parent );
     updateMaxScrollPos();
 }
 
 //virtual
-LLView* LLTabContainer::getChildView(const std::string& name, BOOL recurse) const
+LLView* LLTabContainer::getChildView(const std::string& name, bool recurse) const
 {
     tuple_list_t::const_iterator itor;
     for (itor = mTabList.begin(); itor != mTabList.end(); ++itor)
@@ -343,7 +343,7 @@ LLView* LLTabContainer::getChildView(const std::string& name, BOOL recurse) cons
 }
 
 //virtual
-LLView* LLTabContainer::findChildView(const std::string& name, BOOL recurse) const
+LLView* LLTabContainer::findChildView(const std::string& name, bool recurse) const
 {
     tuple_list_t::const_iterator itor;
     for (itor = mTabList.begin(); itor != mTabList.end(); ++itor)
@@ -385,11 +385,11 @@ bool LLTabContainer::addChild(LLView* view, S32 tab_group)
     }
 }
 
-BOOL LLTabContainer::postBuild()
+bool LLTabContainer::postBuild()
 {
     selectFirstTab();
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -433,7 +433,7 @@ void LLTabContainer::draw()
 
     setScrollPosPixels((S32)lerp((F32)getScrollPosPixels(), (F32)target_pixel_scroll, LLSmoothInterpolation::getInterpolant(0.08f)));
 
-    BOOL has_scroll_arrows = !mHideScrollArrows && !getTabsHidden() && ((mMaxScrollPos > 0) || (mScrollPosPixels > 0));
+    bool has_scroll_arrows = !mHideScrollArrows && !getTabsHidden() && ((mMaxScrollPos > 0) || (mScrollPosPixels > 0));
     if (!mIsVertical)
     {
         mJumpPrevArrowBtn->setVisible( has_scroll_arrows );
@@ -461,7 +461,7 @@ void LLTabContainer::draw()
         for(tuple_list_t::iterator iter = mTabList.begin(); iter != mTabList.end(); ++iter)
         {
             LLTabTuple* tuple = *iter;
-            tuple->mButton->setVisible( FALSE );
+            tuple->mButton->setVisible( false );
         }
     }
 
@@ -480,7 +480,7 @@ void LLTabContainer::draw()
         for(tuple_list_t::iterator iter = mTabList.begin(); iter != mTabList.end(); ++iter)
         {
             LLTabTuple* tuple = *iter;
-            tuple->mButton->setVisible( TRUE );
+            tuple->mButton->setVisible( true );
         }
 
         S32 max_scroll_visible = getTabCount() - getMaxScrollPos() + getScrollPos();
@@ -506,14 +506,14 @@ void LLTabContainer::draw()
                 {
                     if( tuple->mButton->getFlashing() )
                     {
-                        mPrevArrowBtn->setFlashing( TRUE );
+                        mPrevArrowBtn->setFlashing( true );
                     }
                 }
                 else if( max_scroll_visible < idx )
                 {
                     if( tuple->mButton->getFlashing() )
                     {
-                        mNextArrowBtn->setFlashing( TRUE );
+                        mNextArrowBtn->setFlashing( true );
                     }
                 }
             }
@@ -543,11 +543,11 @@ void LLTabContainer::draw()
 
 
 // virtual
-BOOL LLTabContainer::handleMouseDown( S32 x, S32 y, MASK mask )
+bool LLTabContainer::handleMouseDown( S32 x, S32 y, MASK mask )
 {
     static LLUICachedControl<S32> tabcntrv_pad ("UITabCntrvPad", 0);
-    BOOL handled = FALSE;
-    BOOL has_scroll_arrows = !mHideScrollArrows && (getMaxScrollPos() > 0) && !getTabsHidden();
+    bool handled = false;
+    bool has_scroll_arrows = !mHideScrollArrows && (getMaxScrollPos() > 0) && !getTabsHidden();
 
     if (has_scroll_arrows)
     {
@@ -606,7 +606,7 @@ BOOL LLTabContainer::handleMouseDown( S32 x, S32 y, MASK mask )
             index = llclamp(index, 0, tab_count-1);
             LLButton* tab_button = getTab(index)->mButton;
             gFocusMgr.setMouseCapture(this);
-            tab_button->setFocus(TRUE);
+            tab_button->setFocus(true);
             mMouseDownTimer.start();
         }
     }
@@ -619,10 +619,10 @@ BOOL LLTabContainer::handleMouseDown( S32 x, S32 y, MASK mask )
 }
 
 // virtual
-BOOL LLTabContainer::handleHover( S32 x, S32 y, MASK mask )
+bool LLTabContainer::handleHover( S32 x, S32 y, MASK mask )
 {
-    BOOL handled = FALSE;
-    BOOL has_scroll_arrows = !mHideScrollArrows && (getMaxScrollPos() > 0) && !getTabsHidden();
+    bool handled = false;
+    bool has_scroll_arrows = !mHideScrollArrows && (getMaxScrollPos() > 0) && !getTabsHidden();
 
     if (has_scroll_arrows)
     {
@@ -665,10 +665,10 @@ BOOL LLTabContainer::handleHover( S32 x, S32 y, MASK mask )
 }
 
 // virtual
-BOOL LLTabContainer::handleMouseUp( S32 x, S32 y, MASK mask )
+bool LLTabContainer::handleMouseUp( S32 x, S32 y, MASK mask )
 {
-    BOOL handled = FALSE;
-    BOOL has_scroll_arrows = !mHideScrollArrows && (getMaxScrollPos() > 0)  && !getTabsHidden();
+    bool handled = false;
+    bool has_scroll_arrows = !mHideScrollArrows && (getMaxScrollPos() > 0)  && !getTabsHidden();
 
     S32 local_x = x - getRect().mLeft;
     S32 local_y = y - getRect().mBottom;
@@ -712,11 +712,11 @@ BOOL LLTabContainer::handleMouseUp( S32 x, S32 y, MASK mask )
     {
         if (cur_panel)
         {
-            if (!cur_panel->focusFirstItem(FALSE))
+            if (!cur_panel->focusFirstItem(false))
             {
                 // if nothing in the panel gets focus, make sure the new tab does
                 // otherwise the last tab might keep focus
-                getTab(getCurrentPanelIndex())->mButton->setFocus(TRUE);
+                getTab(getCurrentPanelIndex())->mButton->setFocus(true);
             }
         }
         gFocusMgr.setMouseCapture(NULL);
@@ -729,15 +729,15 @@ BOOL LLTabContainer::handleMouseUp( S32 x, S32 y, MASK mask )
 }
 
 // virtual
-BOOL LLTabContainer::handleToolTip( S32 x, S32 y, MASK mask)
+bool LLTabContainer::handleToolTip( S32 x, S32 y, MASK mask)
 {
     static LLUICachedControl<S32> tabcntrv_pad ("UITabCntrvPad", 0);
-    BOOL handled = LLPanel::handleToolTip( x, y, mask);
+    bool handled = LLPanel::handleToolTip( x, y, mask);
     if (!handled && getTabCount() > 0 && !getTabsHidden())
     {
         LLTabTuple* firsttuple = getTab(0);
 
-        BOOL has_scroll_arrows = !mHideScrollArrows && (getMaxScrollPos() > 0);
+        bool has_scroll_arrows = !mHideScrollArrows && (getMaxScrollPos() > 0);
         LLRect clip;
         if (mIsVertical)
         {
@@ -774,25 +774,25 @@ BOOL LLTabContainer::handleToolTip( S32 x, S32 y, MASK mask)
 }
 
 // virtual
-BOOL LLTabContainer::handleKeyHere(KEY key, MASK mask)
+bool LLTabContainer::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if (key == KEY_LEFT && mask == MASK_ALT)
     {
         selectPrevTab();
-        handled = TRUE;
+        handled = true;
     }
     else if (key == KEY_RIGHT && mask == MASK_ALT)
     {
         selectNextTab();
-        handled = TRUE;
+        handled = true;
     }
 
     if (handled)
     {
         if (getCurrentPanel())
         {
-            getCurrentPanel()->setFocus(TRUE);
+            getCurrentPanel()->setFocus(true);
         }
     }
 
@@ -805,21 +805,21 @@ BOOL LLTabContainer::handleKeyHere(KEY key, MASK mask)
             {
               case KEY_UP:
                 selectPrevTab();
-                handled = TRUE;
+                handled = true;
                 break;
               case KEY_DOWN:
                 selectNextTab();
-                handled = TRUE;
+                handled = true;
                 break;
               case KEY_LEFT:
-                handled = TRUE;
+                handled = true;
                 break;
               case KEY_RIGHT:
                 if (getTabPosition() == LEFT && getCurrentPanel())
                 {
-                    getCurrentPanel()->setFocus(TRUE);
+                    getCurrentPanel()->setFocus(true);
                 }
-                handled = TRUE;
+                handled = true;
                 break;
               default:
                 break;
@@ -832,24 +832,24 @@ BOOL LLTabContainer::handleKeyHere(KEY key, MASK mask)
               case KEY_UP:
                 if (getTabPosition() == BOTTOM && getCurrentPanel())
                 {
-                    getCurrentPanel()->setFocus(TRUE);
+                    getCurrentPanel()->setFocus(true);
                 }
-                handled = TRUE;
+                handled = true;
                 break;
               case KEY_DOWN:
                 if (getTabPosition() == TOP && getCurrentPanel())
                 {
-                    getCurrentPanel()->setFocus(TRUE);
+                    getCurrentPanel()->setFocus(true);
                 }
-                handled = TRUE;
+                handled = true;
                 break;
               case KEY_LEFT:
                 selectPrevTab();
-                handled = TRUE;
+                handled = true;
                 break;
               case KEY_RIGHT:
                 selectNextTab();
-                handled = TRUE;
+                handled = true;
                 break;
               default:
                 break;
@@ -860,9 +860,9 @@ BOOL LLTabContainer::handleKeyHere(KEY key, MASK mask)
 }
 
 // virtual
-BOOL LLTabContainer::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,  EDragAndDropType type, void* cargo_data, EAcceptance *accept, std::string   &tooltip)
+bool LLTabContainer::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,  EDragAndDropType type, void* cargo_data, EAcceptance *accept, std::string   &tooltip)
 {
-    BOOL has_scroll_arrows = !mHideScrollArrows && (getMaxScrollPos() > 0);
+    bool has_scroll_arrows = !mHideScrollArrows && (getMaxScrollPos() > 0);
 
     if(mOpenTabsOnDragAndDrop && !getTabsHidden())
     {
@@ -903,7 +903,7 @@ BOOL LLTabContainer::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,  EDra
                 for(tuple_list_t::iterator iter = mTabList.begin(); iter !=  mTabList.end(); ++iter)
                 {
                     LLTabTuple* tuple = *iter;
-                    tuple->mButton->setVisible( TRUE );
+                    tuple->mButton->setVisible( true );
                     S32 local_x = x - tuple->mButton->getRect().mLeft;
                     S32 local_y = y - tuple->mButton->getRect().mBottom;
                     if (tuple->mButton->pointInView(local_x, local_y) &&  tuple->mButton->getEnabled() && !tuple->mTabPanel->getVisible())
@@ -966,9 +966,9 @@ void LLTabContainer::addTabPanel(const TabPanelParams& panel)
     const std::string& label = panel.label.isProvided()
             ? panel.label()
             : panel.panel()->getLabel();
-    BOOL select = panel.select_tab();
+    bool select = panel.select_tab();
     S32 indent = panel.indent();
-    BOOL placeholder = panel.is_placeholder;
+    bool placeholder = panel.is_placeholder;
     eInsertionPoint insertion_point = panel.insert_at();
 
     static LLUICachedControl<S32> tabcntrv_pad ("UITabCntrvPad", 0);
@@ -1031,10 +1031,10 @@ void LLTabContainer::addTabPanel(const TabPanelParams& panel)
     }
     child->setFollowsAll();
     child->translate( tab_panel_rect.mLeft - child->getRect().mLeft, tab_panel_rect.mBottom - child->getRect().mBottom);
-    child->reshape( tab_panel_rect.getWidth(), tab_panel_rect.getHeight(), TRUE );
+    child->reshape( tab_panel_rect.getWidth(), tab_panel_rect.getHeight(), true );
     // add this child later
 
-    child->setVisible( FALSE );  // Will be made visible when selected
+    child->setVisible( false );  // Will be made visible when selected
 
     mTotalTabWidth += button_width;
 
@@ -1256,7 +1256,7 @@ void LLTabContainer::removeTabPanel(LLPanel* child)
         }
     }
 
-    BOOL has_focus = gFocusMgr.childHasKeyboardFocus(this);
+    bool has_focus = gFocusMgr.childHasKeyboardFocus(this);
 
     // If the tab being deleted is the selected one, select a different tab.
     for(std::vector<LLTabTuple*>::iterator iter = mTabList.begin(); iter != mTabList.end(); ++iter)
@@ -1298,7 +1298,7 @@ void LLTabContainer::removeTabPanel(LLPanel* child)
 
     if (mCurrentTabIdx >= (S32)mTabList.size())
     {
-        mCurrentTabIdx = mTabList.size()-1;
+        mCurrentTabIdx = static_cast<S32>(mTabList.size()) - 1;
     }
     selectTab(mCurrentTabIdx);
     if (has_focus)
@@ -1306,7 +1306,7 @@ void LLTabContainer::removeTabPanel(LLPanel* child)
         LLPanel* panelp = getPanelByIndex(mCurrentTabIdx);
         if (panelp)
         {
-            panelp->setFocus(TRUE);
+            panelp->setFocus(true);
         }
     }
 
@@ -1325,7 +1325,7 @@ void LLTabContainer::unlockTabs()
     mLockedTabCount = 0;
 }
 
-void LLTabContainer::enableTabButton(S32 which, BOOL enable)
+void LLTabContainer::enableTabButton(S32 which, bool enable)
 {
     if (which >= 0 && which < (S32)mTabList.size())
     {
@@ -1377,7 +1377,7 @@ S32 LLTabContainer::getCurrentPanelIndex()
 
 S32 LLTabContainer::getTabCount()
 {
-    return mTabList.size();
+    return static_cast<S32>(mTabList.size());
 }
 
 LLPanel* LLTabContainer::getPanelByIndex(S32 index)
@@ -1444,7 +1444,7 @@ void LLTabContainer::selectFirstTab()
 
 void LLTabContainer::selectLastTab()
 {
-    selectTab( mTabList.size()-1 );
+    selectTab(static_cast<S32>(mTabList.size()) - 1);
 }
 
 void LLTabContainer::selectNextTab()
@@ -1454,10 +1454,10 @@ void LLTabContainer::selectNextTab()
         return;
     }
 
-    BOOL tab_has_focus = FALSE;
+    bool tab_has_focus = false;
     if (mCurrentTabIdx >= 0 && mTabList[mCurrentTabIdx]->mButton->hasFocus())
     {
-        tab_has_focus = TRUE;
+        tab_has_focus = true;
     }
     S32 idx = mCurrentTabIdx+1;
     if (idx >= (S32)mTabList.size())
@@ -1469,33 +1469,33 @@ void LLTabContainer::selectNextTab()
 
     if (tab_has_focus)
     {
-        mTabList[idx]->mButton->setFocus(TRUE);
+        mTabList[idx]->mButton->setFocus(true);
     }
 }
 
 void LLTabContainer::selectPrevTab()
 {
-    BOOL tab_has_focus = FALSE;
+    bool tab_has_focus = false;
     if (mCurrentTabIdx >= 0 && mTabList[mCurrentTabIdx]->mButton->hasFocus())
     {
-        tab_has_focus = TRUE;
+        tab_has_focus = true;
     }
     S32 idx = mCurrentTabIdx-1;
     if (idx < 0)
-        idx = mTabList.size()-1;
+        idx = static_cast<S32>(mTabList.size()) - 1;
     while (!selectTab(idx) && idx != mCurrentTabIdx)
     {
         idx = idx - 1;
         if (idx < 0)
-            idx = mTabList.size()-1;
+            idx = static_cast<S32>(mTabList.size()) - 1;
     }
     if (tab_has_focus)
     {
-        mTabList[idx]->mButton->setFocus(TRUE);
+        mTabList[idx]->mButton->setFocus(true);
     }
 }
 
-BOOL LLTabContainer::selectTabPanel(LLPanel* child)
+bool LLTabContainer::selectTabPanel(LLPanel* child)
 {
     S32 idx = 0;
     for(tuple_list_t::iterator iter = mTabList.begin(); iter != mTabList.end(); ++iter)
@@ -1507,23 +1507,23 @@ BOOL LLTabContainer::selectTabPanel(LLPanel* child)
         }
         idx++;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLTabContainer::selectTab(S32 which)
+bool LLTabContainer::selectTab(S32 which)
 {
     if (which >= getTabCount() || which < 0)
-        return FALSE;
+        return false;
 
     LLTabTuple* selected_tuple = getTab(which);
     if (!selected_tuple)
-        return FALSE;
+        return false;
 
     LLSD cbdata;
     if (selected_tuple->mTabPanel)
         cbdata = selected_tuple->mTabPanel->getName();
 
-    BOOL result = FALSE;
+    bool result = false;
     if (!mValidateSignal || (*mValidateSignal)(this, cbdata))
     {
         result = setTab(which);
@@ -1537,16 +1537,16 @@ BOOL LLTabContainer::selectTab(S32 which)
 }
 
 // private
-BOOL LLTabContainer::setTab(S32 which)
+bool LLTabContainer::setTab(S32 which)
 {
     static LLUICachedControl<S32> tabcntr_arrow_btn_size ("UITabCntrArrowBtnSize", 0);
     LLTabTuple* selected_tuple = getTab(which);
     if (!selected_tuple)
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL is_visible = FALSE;
+    bool is_visible = false;
     if( selected_tuple->mButton->getEnabled() && selected_tuple->mVisible )
     {
         setCurrentPanelIndex(which);
@@ -1555,7 +1555,7 @@ BOOL LLTabContainer::setTab(S32 which)
         for(tuple_list_t::iterator iter = mTabList.begin(); iter != mTabList.end(); ++iter)
         {
             LLTabTuple* tuple = *iter;
-            BOOL is_selected = ( tuple == selected_tuple );
+            bool is_selected = ( tuple == selected_tuple );
             // Although the selected tab must be complete, we may have hollow LLTabTuple tucked in the list
             if (tuple && tuple->mButton)
             {
@@ -1582,11 +1582,11 @@ BOOL LLTabContainer::setTab(S32 which)
                     if( i >= getScrollPos() && i <= getScrollPos() + num_visible)
                     {
                         setCurrentPanelIndex(which);
-                        is_visible = TRUE;
+                        is_visible = true;
                     }
                     else
                     {
-                        is_visible = FALSE;
+                        is_visible = false;
                     }
                 }
                 else if (!mHideScrollArrows && getMaxScrollPos() > 0)
@@ -1618,11 +1618,11 @@ BOOL LLTabContainer::setTab(S32 which)
                         setScrollPos(llclamp(getScrollPos(), min_scroll_pos, i));
                         setScrollPos(llmin(getScrollPos(), getMaxScrollPos()));
                     }
-                    is_visible = TRUE;
+                    is_visible = true;
                 }
                 else
                 {
-                    is_visible = TRUE;
+                    is_visible = true;
                 }
             }
             i++;
@@ -1631,36 +1631,36 @@ BOOL LLTabContainer::setTab(S32 which)
     if (mIsVertical && getCurrentPanelIndex() >= 0)
     {
         LLTabTuple* tuple = getTab(getCurrentPanelIndex());
-        tuple->mTabPanel->setVisible( TRUE );
-        tuple->mButton->setToggleState( TRUE );
+        tuple->mTabPanel->setVisible( true );
+        tuple->mButton->setToggleState( true );
     }
     return is_visible;
 }
 
-BOOL LLTabContainer::selectTabByName(const std::string& name)
+bool LLTabContainer::selectTabByName(const std::string& name)
 {
     LLPanel* panel = getPanelByName(name);
     if (!panel)
     {
         LL_WARNS() << "LLTabContainer::selectTabByName(" << name << ") failed" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
-    BOOL result = selectTabPanel(panel);
+    bool result = selectTabPanel(panel);
     return result;
 }
 
-BOOL LLTabContainer::getTabPanelFlashing(LLPanel *child)
+bool LLTabContainer::getTabPanelFlashing(LLPanel *child)
 {
     LLTabTuple* tuple = getTabByPanel(child);
     if( tuple )
     {
         return tuple->mButton->getFlashing();
     }
-    return FALSE;
+    return false;
 }
 
-void LLTabContainer::setTabPanelFlashing(LLPanel* child, BOOL state )
+void LLTabContainer::setTabPanelFlashing(LLPanel* child, bool state )
 {
     LLTabTuple* tuple = getTabByPanel(child);
     if( tuple )
@@ -1810,7 +1810,7 @@ void LLTabContainer::onTabBtn( const LLSD& data, LLPanel* panel )
 
     if (tuple)
     {
-        tuple->mTabPanel->setFocus(TRUE);
+        tuple->mTabPanel->setFocus(true);
     }
 }
 
@@ -1820,7 +1820,7 @@ void LLTabContainer::onNextBtn( const LLSD& data )
     {
         scrollNext();
     }
-    mScrolled = FALSE;
+    mScrolled = false;
 
     if(mCurrentTabIdx < mTabList.size()-1)
     {
@@ -1839,7 +1839,7 @@ void LLTabContainer::onNextBtnHeld( const LLSD& data )
         {
             selectNextTab();
         }
-        mScrolled = TRUE;
+        mScrolled = true;
     }
 }
 
@@ -1849,7 +1849,7 @@ void LLTabContainer::onPrevBtn( const LLSD& data )
     {
         scrollPrev();
     }
-    mScrolled = FALSE;
+    mScrolled = false;
 
     if(mCurrentTabIdx > 0)
     {
@@ -1878,7 +1878,7 @@ void LLTabContainer::onPrevBtnHeld( const LLSD& data )
         {
             selectPrevTab();
         }
-        mScrolled = TRUE;
+        mScrolled = true;
     }
 }
 
@@ -2008,21 +2008,21 @@ void LLTabContainer::initButtons()
         }
     }
 
-    mPrevArrowBtn->setTabStop(FALSE);
+    mPrevArrowBtn->setTabStop(false);
     addChild(mPrevArrowBtn);
 
-    mNextArrowBtn->setTabStop(FALSE);
+    mNextArrowBtn->setTabStop(false);
     addChild(mNextArrowBtn);
 
     if (mJumpPrevArrowBtn)
     {
-        mJumpPrevArrowBtn->setTabStop(FALSE);
+        mJumpPrevArrowBtn->setTabStop(false);
         addChild(mJumpPrevArrowBtn);
     }
 
     if (mJumpNextArrowBtn)
     {
-        mJumpNextArrowBtn->setTabStop(FALSE);
+        mJumpNextArrowBtn->setTabStop(false);
         addChild(mJumpNextArrowBtn);
     }
 
@@ -2087,7 +2087,7 @@ void LLTabContainer::insertTuple(LLTabTuple * tuple, eInsertionPoint insertion_p
 void LLTabContainer::updateMaxScrollPos()
 {
     static LLUICachedControl<S32> tabcntrv_pad ("UITabCntrvPad", 0);
-    BOOL no_scroll = TRUE;
+    bool no_scroll = true;
     if (mIsVertical)
     {
         S32 tab_total_height = (BTN_HEIGHT + tabcntrv_pad) * getTabCount();
@@ -2098,7 +2098,7 @@ void LLTabContainer::updateMaxScrollPos()
             S32 available_height_with_arrows = getRect().getHeight() - 2*(tabcntrv_arrow_btn_size + 3*tabcntrv_pad) - mNextArrowBtn->getRect().mBottom;
             S32 additional_needed = tab_total_height - available_height_with_arrows;
             setMaxScrollPos((S32) ceil(additional_needed / float(BTN_HEIGHT + tabcntrv_pad) ) );
-            no_scroll = FALSE;
+            no_scroll = false;
         }
     }
     else
@@ -2130,7 +2130,7 @@ void LLTabContainer::updateMaxScrollPos()
             }
             // in case last tab doesn't actually fit on screen, make it the last scrolling position
             setMaxScrollPos(llmin(getMaxScrollPos(), getTabCount() - 1));
-            no_scroll = FALSE;
+            no_scroll = false;
         }
     }
     if (no_scroll)
@@ -2196,9 +2196,9 @@ void LLTabContainer::setTabVisibility( LLPanel const *aPanel, bool aVisible )
     }
 
     if( foundTab )
-        this->setVisible( TRUE );
+        this->setVisible( true );
     else
-        this->setVisible( FALSE );
+        this->setVisible( false );
 
     updateMaxScrollPos();
 }
diff --git a/indra/llui/lltabcontainer.h b/indra/llui/lltabcontainer.h
index 626255be8c..b22eec2fe5 100644
--- a/indra/llui/lltabcontainer.h
+++ b/indra/llui/lltabcontainer.h
@@ -132,28 +132,28 @@ protected:
 
 public:
     //LLTabContainer( const std::string& name, const LLRect& rect, TabPosition pos,
-    //              BOOL bordered, BOOL is_vertical);
+    //              bool bordered, bool is_vertical);
 
     /*virtual*/ ~LLTabContainer();
 
     // from LLView
     /*virtual*/ void setValue(const LLSD& value);
 
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
     /*virtual*/ void draw();
-    /*virtual*/ BOOL handleMouseDown( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL handleHover( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL handleMouseUp( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL handleToolTip(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleKeyHere(KEY key, MASK mask);
-    /*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    /*virtual*/ bool handleMouseDown( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleHover( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleMouseUp( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleKeyHere(KEY key, MASK mask);
+    /*virtual*/ bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                        EDragAndDropType type, void* cargo_data,
                                        EAcceptance* accept, std::string& tooltip);
-    /*virtual*/ LLView* getChildView(const std::string& name, BOOL recurse = TRUE) const;
-    /*virtual*/ LLView* findChildView(const std::string& name, BOOL recurse = TRUE) const;
+    /*virtual*/ LLView* getChildView(const std::string& name, bool recurse = true) const;
+    /*virtual*/ LLView* findChildView(const std::string& name, bool recurse = true) const;
     /*virtual*/ void initFromParams(const LLPanel::Params& p);
     /*virtual*/ bool addChild(LLView* view, S32 tab_group = 0);
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     struct TabPanelParams : public LLInitParam::Block<TabPanelParams>
     {
@@ -183,7 +183,7 @@ public:
     void        lockTabs(S32 num_tabs = 0);
     void        unlockTabs();
     S32         getNumLockedTabs() { return mLockedTabCount; }
-    void        enableTabButton(S32 which, BOOL enable);
+    void        enableTabButton(S32 which, bool enable);
     void        deleteAllTabs();
     LLPanel*    getCurrentPanel();
     S32         getCurrentPanelIndex();
@@ -199,13 +199,13 @@ public:
     void        selectLastTab();
     void        selectNextTab();
     void        selectPrevTab();
-    BOOL        selectTabPanel( LLPanel* child );
-    BOOL        selectTab(S32 which);
-    BOOL        selectTabByName(const std::string& title);
+    bool        selectTabPanel( LLPanel* child );
+    bool        selectTab(S32 which);
+    bool        selectTabByName(const std::string& title);
     void        setCurrentPanelIndex(S32 index) { mCurrentTabIdx = index; }
 
-    BOOL        getTabPanelFlashing(LLPanel* child);
-    void        setTabPanelFlashing(LLPanel* child, BOOL state);
+    bool        getTabPanelFlashing(LLPanel* child);
+    void        setTabPanelFlashing(LLPanel* child, bool state);
     void        setTabImage(LLPanel* child, std::string img_name, const LLColor4& color = LLColor4::white);
     void        setTabImage(LLPanel* child, const LLUUID& img_id, const LLColor4& color = LLColor4::white);
     void        setTabImage(LLPanel* child, LLIconCtrl* icon);
@@ -240,7 +240,7 @@ private:
 
     void initButtons();
 
-    BOOL        setTab(S32 which);
+    bool        setTab(S32 which);
 
     LLTabTuple* getTab(S32 index)       { return mTabList[index]; }
     LLTabTuple* getTabByPanel(LLPanel* child);
@@ -253,8 +253,8 @@ private:
     S32 getScrollPosPixels() const      { return mScrollPosPixels; }
     void setScrollPosPixels(S32 pixels) { mScrollPosPixels = pixels; }
 
-    void setTabsHidden(BOOL hidden)     { mTabsHidden = hidden; }
-    BOOL getTabsHidden() const          { return mTabsHidden; }
+    void setTabsHidden(bool hidden)     { mTabsHidden = hidden; }
+    bool getTabsHidden() const          { return mTabsHidden; }
 
     void scrollPrev() { mScrollPos = llmax(0, mScrollPos-1); } // No wrap
     void scrollNext() { mScrollPos = llmin(mScrollPos+1, mMaxScrollPos); } // No wrap
@@ -272,10 +272,10 @@ private:
     tuple_list_t                    mTabList;
 
     S32                             mCurrentTabIdx;
-    BOOL                            mTabsHidden;
-    BOOL                            mHideScrollArrows;
+    bool                            mTabsHidden;
+    bool                            mHideScrollArrows;
 
-    BOOL                            mScrolled;
+    bool                            mScrolled;
     LLFrameTimer                    mScrollTimer;
     S32                             mScrollPos;
     S32                             mScrollPosPixels;
@@ -290,7 +290,7 @@ private:
     LLButton*                       mPrevArrowBtn;
     LLButton*                       mNextArrowBtn;
 
-    BOOL                            mIsVertical;
+    bool                            mIsVertical;
 
     // Horizontal specific
     LLButton*                       mJumpPrevArrowBtn;
diff --git a/indra/llui/lltextbase.cpp b/indra/llui/lltextbase.cpp
index c1eedf93a7..1d358a0e9d 100644
--- a/indra/llui/lltextbase.cpp
+++ b/indra/llui/lltextbase.cpp
@@ -207,7 +207,7 @@ LLTextBase::LLTextBase(const LLTextBase::Params &p)
     mSelectedBGColor(p.bg_selected_color),
     mReflowIndex(S32_MAX),
     mCursorPos( 0 ),
-    mScrollNeeded(FALSE),
+    mScrollNeeded(false),
     mDesiredXPixel(-1),
     mHPad(p.h_pad),
     mVPad(p.v_pad),
@@ -224,7 +224,7 @@ LLTextBase::LLTextBase(const LLTextBase::Params &p)
     mScrollIndex(-1),
     mSelectionStart( 0 ),
     mSelectionEnd( 0 ),
-    mIsSelecting( FALSE ),
+    mIsSelecting( false ),
     mPlainText ( p.plain_text ),
     mWordWrap(p.wrap),
     mUseEllipses( p.use_ellipses ),
@@ -309,7 +309,7 @@ void LLTextBase::initFromParams(const LLTextBase::Params& p)
 
 bool LLTextBase::truncate()
 {
-    BOOL did_truncate = FALSE;
+    bool did_truncate = false;
 
     // First rough check - if we're less than 1/4th the size, we're OK
     if (getLength() >= S32(mMaxTextByteLength / 4))
@@ -320,12 +320,12 @@ bool LLTextBase::truncate()
         if (value.type() == LLSD::TypeString)
         {
             // save a copy for strings.
-            utf8_byte_size = value.size();
+            utf8_byte_size = static_cast<S32>(value.size());
         }
         else
         {
             // non string LLSDs need explicit conversion to string
-            utf8_byte_size = value.asString().size();
+            utf8_byte_size = static_cast<S32>(value.asString().size());
         }
 
         if ( utf8_byte_size > mMaxTextByteLength )
@@ -335,8 +335,8 @@ bool LLTextBase::truncate()
             temp_utf8_text = utf8str_truncate( temp_utf8_text, mMaxTextByteLength );
             LLWString text = utf8str_to_wstring( temp_utf8_text );
             // remove extra bit of current string, to preserve formatting, etc.
-            removeStringNoUndo(text.size(), getWText().size() - text.size());
-            did_truncate = TRUE;
+            removeStringNoUndo(static_cast<S32>(text.size()), static_cast<S32>(getWText().size() - text.size()));
+            did_truncate = true;
         }
     }
 
@@ -617,7 +617,7 @@ void LLTextBase::drawText()
     }
     else if (useLabel())
     {
-        text_len = mLabel.getWString().length();
+        text_len = static_cast<S32>(mLabel.getWString().length());
     }
 
     S32 selection_left = -1;
@@ -686,7 +686,7 @@ void LLTextBase::drawText()
 
                 // Find the start of the first word
                 U32 word_start = seg_start, word_end = -1;
-                U32 text_length = wstrText.length();
+                U32 text_length = static_cast<U32>(wstrText.length());
                 while ( (word_start < text_length) && (!LLStringOps::isAlpha(wstrText[word_start])) )
                 {
                     word_start++;
@@ -789,7 +789,7 @@ void LLTextBase::drawText()
             }
 
             // Draw squiggly lines under any visible misspelled words
-            while ( (mMisspellRanges.end() != misspell_it) && (misspell_it->first < seg_end) && (misspell_it->second > seg_start) )
+            while ( (mMisspellRanges.end() != misspell_it) && (misspell_it->first < (U32)seg_end) && (misspell_it->second > (U32)seg_start) )
             {
                 // Skip the current word if the user is still busy editing it
                 if ( (!mSpellCheckTimer.hasExpired()) && (misspell_it->first <= (U32)mCursorPos) && (misspell_it->second >= (U32)mCursorPos) )
@@ -798,7 +798,7 @@ void LLTextBase::drawText()
                     continue;
                 }
 
-                U32 misspell_start = llmax<U32>(misspell_it->first, seg_start), misspell_end = llmin<U32>(misspell_it->second, seg_end);
+                U32 misspell_start = llmax<U32>(misspell_it->first, (U32)seg_start), misspell_end = llmin<U32>(misspell_it->second, (U32)seg_end);
                 S32 squiggle_start = 0, squiggle_end = 0, pony = 0;
                 cur_segment->getDimensions(seg_start - cur_segment->getStart(), misspell_start - seg_start, squiggle_start, pony);
                 cur_segment->getDimensions(misspell_start - cur_segment->getStart(), misspell_end - misspell_start, squiggle_end, pony);
@@ -821,7 +821,7 @@ void LLTextBase::drawText()
                     squiggle_start += 4;
                 }
 
-                if (misspell_it->second > seg_end)
+                if (misspell_it->second > (U32)seg_end)
                 {
                     break;
                 }
@@ -845,9 +845,16 @@ S32 LLTextBase::insertStringNoUndo(S32 pos, const LLWString &wstr, LLTextBase::s
     beforeValueChange();
 
     S32 old_len = getLength();      // length() returns character length
-    S32 insert_len = wstr.length();
+    S32 insert_len = static_cast<S32>(wstr.length());
 
     pos = getEditableIndex(pos, true);
+    if (pos > old_len)
+    {
+        pos = old_len;
+        // Should not happen,
+        // if you encounter this, check where wrong position comes from
+        llassert(false);
+    }
 
     segment_set_t::iterator seg_iter = getEditableSegIterContaining(pos);
 
@@ -909,7 +916,7 @@ S32 LLTextBase::insertStringNoUndo(S32 pos, const LLWString &wstr, LLTextBase::s
     {
         LLStyleSP emoji_style;
         LLEmojiDictionary* ed = LLEmojiDictionary::instanceExists() ? LLEmojiDictionary::getInstance() : NULL;
-        for (S32 text_kitty = 0, text_len = wstr.size(); text_kitty < text_len; text_kitty++)
+        for (S32 text_kitty = 0, text_len = static_cast<S32>(wstr.size()); text_kitty < text_len; text_kitty++)
         {
             llwchar code = wstr[text_kitty];
             bool isEmoji = ed ? ed->isEmoji(code) : LLStringOps::isEmoji(code);
@@ -1111,14 +1118,14 @@ void LLTextBase::insertSegment(LLTextSegmentPtr segment_to_insert)
 }
 
 //virtual
-BOOL LLTextBase::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLTextBase::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // handle triple click
     if (!mTripleClickTimer.hasExpired())
     {
         if (mSkipTripleClick)
         {
-            return TRUE;
+            return true;
         }
 
         S32 real_line = getLineNumFromDocIndex(mCursorPos, false);
@@ -1146,27 +1153,27 @@ BOOL LLTextBase::handleMouseDown(S32 x, S32 y, MASK mask)
 
         if (line_start == -1)
         {
-            return TRUE;
+            return true;
         }
 
         mSelectionEnd = line_start;
         mSelectionStart = line_end;
         setCursorPos(line_start);
 
-        return TRUE;
+        return true;
     }
 
     LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
     if (cur_segment && cur_segment->handleMouseDown(x, y, mask))
     {
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleMouseDown(x, y, mask);
 }
 
 //virtual
-BOOL LLTextBase::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLTextBase::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
     if (hasMouseCapture() && cur_segment && cur_segment->handleMouseUp(x, y, mask))
@@ -1179,62 +1186,62 @@ BOOL LLTextBase::handleMouseUp(S32 x, S32 y, MASK mask)
             // *TODO: send URL here?
             (*mURLClickSignal)(this, LLSD() );
         }
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleMouseUp(x, y, mask);
 }
 
 //virtual
-BOOL LLTextBase::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
+bool LLTextBase::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
 {
     LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
     if (cur_segment && cur_segment->handleMiddleMouseDown(x, y, mask))
     {
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleMiddleMouseDown(x, y, mask);
 }
 
 //virtual
-BOOL LLTextBase::handleMiddleMouseUp(S32 x, S32 y, MASK mask)
+bool LLTextBase::handleMiddleMouseUp(S32 x, S32 y, MASK mask)
 {
     LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
     if (cur_segment && cur_segment->handleMiddleMouseUp(x, y, mask))
     {
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleMiddleMouseUp(x, y, mask);
 }
 
 //virtual
-BOOL LLTextBase::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLTextBase::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
     if (cur_segment && cur_segment->handleRightMouseDown(x, y, mask))
     {
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleRightMouseDown(x, y, mask);
 }
 
 //virtual
-BOOL LLTextBase::handleRightMouseUp(S32 x, S32 y, MASK mask)
+bool LLTextBase::handleRightMouseUp(S32 x, S32 y, MASK mask)
 {
     LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
     if (cur_segment && cur_segment->handleRightMouseUp(x, y, mask))
     {
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleRightMouseUp(x, y, mask);
 }
 
 //virtual
-BOOL LLTextBase::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLTextBase::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     //Don't start triple click timer if user have clicked on scrollbar
     mVisibleTextRect = mScroller ? mScroller->getContentWindowRect() : getLocalRect();
@@ -1247,50 +1254,50 @@ BOOL LLTextBase::handleDoubleClick(S32 x, S32 y, MASK mask)
     LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
     if (cur_segment && cur_segment->handleDoubleClick(x, y, mask))
     {
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleDoubleClick(x, y, mask);
 }
 
 //virtual
-BOOL LLTextBase::handleHover(S32 x, S32 y, MASK mask)
+bool LLTextBase::handleHover(S32 x, S32 y, MASK mask)
 {
     LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
     if (cur_segment && cur_segment->handleHover(x, y, mask))
     {
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleHover(x, y, mask);
 }
 
 //virtual
-BOOL LLTextBase::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLTextBase::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
     if (cur_segment && cur_segment->handleScrollWheel(x, y, clicks))
     {
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleScrollWheel(x, y, clicks);
 }
 
 //virtual
-BOOL LLTextBase::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLTextBase::handleToolTip(S32 x, S32 y, MASK mask)
 {
     LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
     if (cur_segment && cur_segment->handleToolTip(x, y, mask))
     {
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleToolTip(x, y, mask);
 }
 
 //virtual
-void LLTextBase::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLTextBase::reshape(S32 width, S32 height, bool called_from_parent)
 {
     if (width != getRect().getWidth() || height != getRect().getHeight() || LLView::sForceReshape)
     {
@@ -1366,7 +1373,7 @@ void LLTextBase::draw()
                             : hasFocus()
                                 ? mFocusBgColor.get()
                                 : mWriteableBgColor.get();
-        gl_rect_2d(text_rect, bg_color % alpha, TRUE);
+        gl_rect_2d(text_rect, bg_color % alpha, true);
     }
 
     // Draw highlighted if needed
@@ -1377,7 +1384,7 @@ void LLTextBase::draw()
         if( mScroller )
             bg_rect.intersectWith( text_rect );
 
-        gl_rect_2d( text_rect, bg_color, TRUE );
+        gl_rect_2d( text_rect, bg_color, true );
     }
 
     bool should_clip = mClip || mScroller != NULL;
@@ -1398,9 +1405,9 @@ void LLTextBase::draw()
         drawCursor();
     }
 
-    mDocumentView->setVisibleDirect(FALSE);
+    mDocumentView->setVisibleDirect(false);
     LLUICtrl::draw();
-    mDocumentView->setVisibleDirect(TRUE);
+    mDocumentView->setVisibleDirect(true);
 }
 
 
@@ -1419,7 +1426,7 @@ void LLTextBase::setReadOnlyColor(const LLColor4 &c)
 }
 
 //virtual
-void LLTextBase::onVisibilityChange( BOOL new_visibility )
+void LLTextBase::onVisibilityChange( bool new_visibility )
 {
     LLContextMenu* menu = static_cast<LLContextMenu*>(mPopupMenuHandle.get());
     if(!new_visibility && menu)
@@ -1436,7 +1443,7 @@ void LLTextBase::setValue(const LLSD& value )
 }
 
 //virtual
-BOOL LLTextBase::canDeselect() const
+bool LLTextBase::canDeselect() const
 {
     return hasSelection();
 }
@@ -1447,7 +1454,7 @@ void LLTextBase::deselect()
 {
     mSelectionStart = 0;
     mSelectionEnd = 0;
-    mIsSelecting = FALSE;
+    mIsSelecting = false;
 }
 
 bool LLTextBase::getSpellCheck() const
@@ -1462,7 +1469,7 @@ const std::string& LLTextBase::getSuggestion(U32 index) const
 
 U32 LLTextBase::getSuggestionCount() const
 {
-    return mSuggestionList.size();
+    return static_cast<U32>(mSuggestionList.size());
 }
 
 void LLTextBase::replaceWithSuggestion(U32 index)
@@ -1575,7 +1582,7 @@ void LLTextBase::updateScrollFromCursor()
     {
         return;
     }
-    mScrollNeeded = FALSE;
+    mScrollNeeded = false;
 
     // scroll so that the cursor is at the top of the page
     LLRect scroller_doc_window = getVisibleDocumentRect();
@@ -2055,7 +2062,7 @@ LLTextBase::segment_set_t::const_iterator LLTextBase::getSegIterContaining(S32 i
 LLTextSegmentPtr LLTextBase::getSegmentAtLocalPos( S32 x, S32 y, bool hit_past_end_of_line)
 {
     // Find the cursor position at the requested local screen position
-    S32 offset = getDocIndexFromLocalCoord( x, y, FALSE, hit_past_end_of_line);
+    S32 offset = getDocIndexFromLocalCoord( x, y, false, hit_past_end_of_line);
     segment_set_t::iterator seg_iter = getSegIterContaining(offset);
     if (seg_iter != mSegments.end())
     {
@@ -2312,10 +2319,10 @@ void LLTextBase::setLabel(const LLStringExplicit& label)
     resetLabel();
 }
 
-BOOL LLTextBase::setLabelArg(const std::string& key, const LLStringExplicit& text )
+bool LLTextBase::setLabelArg(const std::string& key, const LLStringExplicit& text )
 {
     mLabel.setArg(key, text);
-    return TRUE;
+    return true;
 }
 
 void LLTextBase::resetLabel()
@@ -2328,7 +2335,7 @@ void LLTextBase::resetLabel()
         style->setColor(mTentativeFgColor);
         LLStyleConstSP sp(style);
 
-        LLTextSegmentPtr label = new LLLabelTextSegment(sp, 0, mLabel.getWString().length() + 1, *this);
+        LLTextSegmentPtr label = new LLLabelTextSegment(sp, 0, static_cast<S32>(mLabel.getWString().length()) + 1, *this);
         insertSegment(label);
     }
 }
@@ -2388,7 +2395,7 @@ void LLTextBase::appendWidget(const LLInlineViewSegment::Params& params, const s
 {
     segment_vec_t segments;
     LLWString widget_wide_text = utf8str_to_wstring(text);
-    segments.push_back(new LLInlineViewSegment(params, getLength(), getLength() + widget_wide_text.size()));
+    segments.push_back(new LLInlineViewSegment(params, getLength(), getLength() + static_cast<S32>(widget_wide_text.size())));
 
     insertStringNoUndo(getLength(), widget_wide_text, &segments);
 }
@@ -2398,10 +2405,10 @@ void LLTextBase::appendAndHighlightTextImpl(const std::string &new_text, S32 hig
     // Save old state
     S32 selection_start = mSelectionStart;
     S32 selection_end = mSelectionEnd;
-    BOOL was_selecting = mIsSelecting;
+    bool was_selecting = mIsSelecting;
     S32 cursor_pos = mCursorPos;
     S32 old_length = getLength();
-    BOOL cursor_was_at_end = (mCursorPos == old_length);
+    bool cursor_was_at_end = (mCursorPos == old_length);
 
     deselect();
 
@@ -2429,11 +2436,11 @@ void LLTextBase::appendAndHighlightTextImpl(const std::string &new_text, S32 hig
             {
                 highlight_params.font.style("NORMAL");
                 LLStyleConstSP normal_sp(new LLStyle(highlight_params));
-                segmentp = new LLOnHoverChangeableTextSegment(sp, normal_sp, cur_length, cur_length + wide_text.size(), *this);
+                segmentp = new LLOnHoverChangeableTextSegment(sp, normal_sp, cur_length, cur_length + static_cast<S32>(wide_text.size()), *this);
             }
             else
             {
-                segmentp = new LLNormalTextSegment(sp, cur_length, cur_length + wide_text.size(), *this);
+                segmentp = new LLNormalTextSegment(sp, cur_length, cur_length + static_cast<S32>(wide_text.size()), *this);
             }
             segment_vec_t segments;
             segments.push_back(segmentp);
@@ -2447,7 +2454,7 @@ void LLTextBase::appendAndHighlightTextImpl(const std::string &new_text, S32 hig
 
         segment_vec_t segments;
         S32 segment_start = old_length;
-        S32 segment_end = old_length + wide_text.size();
+        S32 segment_end = old_length + static_cast<S32>(wide_text.size());
         LLStyleConstSP sp(new LLStyle(style_params));
         if (underline_on_hover_only || mSkipLinkUnderline)
         {
@@ -2538,7 +2545,7 @@ void LLTextBase::replaceUrl(const std::string &url,
             S32 start = seg->getStart();
             S32 end = seg->getEnd();
             text = text.substr(0, start) + wlabel + text.substr(end, text.size() - end + 1);
-            seg->setEnd(start + wlabel.size());
+            seg->setEnd(start + static_cast<S32>(wlabel.size()));
             modified = true;
         }
 
@@ -2586,7 +2593,7 @@ const LLWString& LLTextBase::getWText() const
 // will be put to its right.  If round is false, the cursor will always be put to the
 // character's left.
 
-S32 LLTextBase::getDocIndexFromLocalCoord( S32 local_x, S32 local_y, BOOL round, bool hit_past_end_of_line) const
+S32 LLTextBase::getDocIndexFromLocalCoord( S32 local_x, S32 local_y, bool round, bool hit_past_end_of_line) const
 {
     // Figure out which line we're nearest to.
     LLRect doc_rect = mDocumentView->getRect();
@@ -2866,7 +2873,7 @@ void LLTextBase::changeLine( S32 delta )
     {
         LLRect visible_region = getVisibleDocumentRect();
         S32 new_cursor_pos = getDocIndexFromLocalCoord(mDesiredXPixel,
-                                                       mLineInfoList[new_line].mRect.mBottom + mVisibleTextRect.mBottom - visible_region.mBottom, TRUE);
+                                                       mLineInfoList[new_line].mRect.mBottom + mVisibleTextRect.mBottom - visible_region.mBottom, true);
         S32 actual_line = getLineNumFromDocIndex(new_cursor_pos);
         if (actual_line != new_line)
         {
@@ -2891,7 +2898,7 @@ bool LLTextBase::setCursor(S32 row, S32 column)
 {
     if (row < 0 || column < 0) return false;
 
-    S32 n_lines = mLineInfoList.size();
+    S32 n_lines = static_cast<S32>(mLineInfoList.size());
     for (S32 line = row; line < n_lines; ++line)
     {
         const line_info& li = mLineInfoList[line];
@@ -3129,7 +3136,7 @@ void LLTextBase::startSelection()
 {
     if( !mIsSelecting )
     {
-        mIsSelecting = TRUE;
+        mIsSelecting = true;
         mSelectionStart = mCursorPos;
         mSelectionEnd = mCursorPos;
     }
@@ -3139,7 +3146,7 @@ void LLTextBase::endSelection()
 {
     if( mIsSelecting )
     {
-        mIsSelecting = FALSE;
+        mIsSelecting = false;
         mSelectionEnd = mCursorPos;
     }
 }
@@ -3248,17 +3255,17 @@ void LLTextSegment::setToken( LLKeywordToken* token ) {}
 LLKeywordToken* LLTextSegment::getToken() const { return NULL; }
 void LLTextSegment::setToolTip( const std::string &msg ) {}
 void LLTextSegment::dump() const {}
-BOOL LLTextSegment::handleMouseDown(S32 x, S32 y, MASK mask) { return FALSE; }
-BOOL LLTextSegment::handleMouseUp(S32 x, S32 y, MASK mask) { return FALSE; }
-BOOL LLTextSegment::handleMiddleMouseDown(S32 x, S32 y, MASK mask) { return FALSE; }
-BOOL LLTextSegment::handleMiddleMouseUp(S32 x, S32 y, MASK mask) { return FALSE; }
-BOOL LLTextSegment::handleRightMouseDown(S32 x, S32 y, MASK mask) { return FALSE; }
-BOOL LLTextSegment::handleRightMouseUp(S32 x, S32 y, MASK mask) { return FALSE; }
-BOOL LLTextSegment::handleDoubleClick(S32 x, S32 y, MASK mask) { return FALSE; }
-BOOL LLTextSegment::handleHover(S32 x, S32 y, MASK mask) { return FALSE; }
-BOOL LLTextSegment::handleScrollWheel(S32 x, S32 y, S32 clicks) { return FALSE; }
-BOOL LLTextSegment::handleScrollHWheel(S32 x, S32 y, S32 clicks) { return FALSE; }
-BOOL LLTextSegment::handleToolTip(S32 x, S32 y, MASK mask) { return FALSE; }
+bool LLTextSegment::handleMouseDown(S32 x, S32 y, MASK mask) { return false; }
+bool LLTextSegment::handleMouseUp(S32 x, S32 y, MASK mask) { return false; }
+bool LLTextSegment::handleMiddleMouseDown(S32 x, S32 y, MASK mask) { return false; }
+bool LLTextSegment::handleMiddleMouseUp(S32 x, S32 y, MASK mask) { return false; }
+bool LLTextSegment::handleRightMouseDown(S32 x, S32 y, MASK mask) { return false; }
+bool LLTextSegment::handleRightMouseUp(S32 x, S32 y, MASK mask) { return false; }
+bool LLTextSegment::handleDoubleClick(S32 x, S32 y, MASK mask) { return false; }
+bool LLTextSegment::handleHover(S32 x, S32 y, MASK mask) { return false; }
+bool LLTextSegment::handleScrollWheel(S32 x, S32 y, S32 clicks) { return false; }
+bool LLTextSegment::handleScrollHWheel(S32 x, S32 y, S32 clicks) { return false; }
+bool LLTextSegment::handleToolTip(S32 x, S32 y, MASK mask) { return false; }
 const std::string&  LLTextSegment::getName() const
 {
     return LLStringUtil::null;
@@ -3266,7 +3273,7 @@ const std::string&  LLTextSegment::getName() const
 void LLTextSegment::onMouseCaptureLost() {}
 void LLTextSegment::screenPointToLocal(S32 screen_x, S32 screen_y, S32* local_x, S32* local_y) const {}
 void LLTextSegment::localPointToScreen(S32 local_x, S32 local_y, S32* screen_x, S32* screen_y) const {}
-BOOL LLTextSegment::hasMouseCapture() { return FALSE; }
+bool LLTextSegment::hasMouseCapture() { return false; }
 
 //
 // LLNormalTextSegment
@@ -3287,7 +3294,7 @@ LLNormalTextSegment::LLNormalTextSegment( LLStyleConstSP style, S32 start, S32 e
     }
 }
 
-LLNormalTextSegment::LLNormalTextSegment( const LLColor4& color, S32 start, S32 end, LLTextBase& editor, BOOL is_visible)
+LLNormalTextSegment::LLNormalTextSegment( const LLColor4& color, S32 start, S32 end, LLTextBase& editor, bool is_visible)
 :   LLTextSegment(start, end),
     mToken(NULL),
     mEditor(editor)
@@ -3387,7 +3394,7 @@ F32 LLNormalTextSegment::drawClippedSegment(S32 seg_start, S32 seg_end, S32 sele
     return right_x;
 }
 
-BOOL LLNormalTextSegment::handleHover(S32 x, S32 y, MASK mask)
+bool LLNormalTextSegment::handleHover(S32 x, S32 y, MASK mask)
 {
     if (getStyle() && getStyle()->isLink())
     {
@@ -3395,13 +3402,13 @@ BOOL LLNormalTextSegment::handleHover(S32 x, S32 y, MASK mask)
         if(mEditor.getSegmentAtLocalPos(x, y, false) == this)
         {
             LLUI::getInstance()->getWindow()->setCursor(UI_CURSOR_HAND);
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLNormalTextSegment::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLNormalTextSegment::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     if (getStyle() && getStyle()->isLink())
     {
@@ -3409,13 +3416,13 @@ BOOL LLNormalTextSegment::handleRightMouseDown(S32 x, S32 y, MASK mask)
         if(mEditor.getSegmentAtLocalPos(x, y, false) == this)
         {
             mEditor.createUrlContextMenu(x, y, getStyle()->getLinkHREF());
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLNormalTextSegment::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLNormalTextSegment::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (getStyle() && getStyle()->isLink())
     {
@@ -3423,14 +3430,14 @@ BOOL LLNormalTextSegment::handleMouseDown(S32 x, S32 y, MASK mask)
         if(mEditor.getSegmentAtLocalPos(x, y, false) == this)
         {
             // eat mouse down event on hyperlinks, so we get the mouse up
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLNormalTextSegment::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLNormalTextSegment::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if (getStyle() && getStyle()->isLink())
     {
@@ -3446,14 +3453,14 @@ BOOL LLNormalTextSegment::handleMouseUp(S32 x, S32 y, MASK mask)
             {
                 LLUrlAction::openURLExternal(url);
             }
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLNormalTextSegment::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLNormalTextSegment::handleToolTip(S32 x, S32 y, MASK mask)
 {
     std::string msg;
     // do we have a tooltip for a loaded keyword (for script editor)?
@@ -3461,16 +3468,16 @@ BOOL LLNormalTextSegment::handleToolTip(S32 x, S32 y, MASK mask)
     {
         const LLWString& wmsg = mToken->getToolTip();
         LLToolTipMgr::instance().show(wstring_to_utf8str(wmsg), (mToken->getType() == LLKeywordToken::TT_FUNCTION));
-        return TRUE;
+        return true;
     }
     // or do we have an explicitly set tooltip (e.g., for Urls)
     if (!mTooltip.empty())
     {
         LLToolTipMgr::instance().show(mTooltip);
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLNormalTextSegment::setToolTip(const std::string& tooltip)
@@ -3530,7 +3537,7 @@ S32 LLNormalTextSegment::getNumChars(S32 num_pixels, S32 segment_offset, S32 lin
         : LLFontGL::ONLY_WORD_BOUNDARIES;
 
 
-    S32 offsetLength = text.length() - (segment_offset + mStart);
+    S32 offsetLength = static_cast<S32>(text.length()) - (segment_offset + mStart);
 
     if(getLength() < segment_offset + mStart)
     {
@@ -3572,9 +3579,9 @@ S32 LLNormalTextSegment::getNumChars(S32 num_pixels, S32 segment_offset, S32 lin
 void LLNormalTextSegment::dump() const
 {
     LL_INFOS() << "Segment [" <<
-//          mColor.mV[VX] << ", " <<
-//          mColor.mV[VY] << ", " <<
-//          mColor.mV[VZ] << "]\t[" <<
+//          mColor.mV[VRED] << ", " <<
+//          mColor.mV[VGREEN] << ", " <<
+//          mColor.mV[VBLUE] << "]\t[" <<
         mStart << ", " <<
         getEnd() << "]" <<
         LL_ENDL;
@@ -3597,7 +3604,7 @@ LLLabelTextSegment::LLLabelTextSegment( LLStyleConstSP style, S32 start, S32 end
 {
 }
 
-LLLabelTextSegment::LLLabelTextSegment( const LLColor4& color, S32 start, S32 end, LLTextBase& editor, BOOL is_visible)
+LLLabelTextSegment::LLLabelTextSegment( const LLColor4& color, S32 start, S32 end, LLTextBase& editor, bool is_visible)
 :   LLNormalTextSegment(color, start, end, editor, is_visible)
 {
 }
@@ -3610,7 +3617,7 @@ const LLWString& LLLabelTextSegment::getWText() const
 /*virtual*/
 const S32 LLLabelTextSegment::getLength() const
 {
-    return mEditor.getWlabel().length();
+    return static_cast<S32>(mEditor.getWlabel().length());
 }
 
 //
@@ -3621,12 +3628,12 @@ LLEmojiTextSegment::LLEmojiTextSegment(LLStyleConstSP style, S32 start, S32 end,
 {
 }
 
-LLEmojiTextSegment::LLEmojiTextSegment(const LLColor4& color, S32 start, S32 end, LLTextBase& editor, BOOL is_visible)
+LLEmojiTextSegment::LLEmojiTextSegment(const LLColor4& color, S32 start, S32 end, LLTextBase& editor, bool is_visible)
     : LLNormalTextSegment(color, start, end, editor, is_visible)
 {
 }
 
-BOOL LLEmojiTextSegment::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLEmojiTextSegment::handleToolTip(S32 x, S32 y, MASK mask)
 {
     if (mTooltip.empty())
     {
@@ -3661,7 +3668,7 @@ F32 LLOnHoverChangeableTextSegment::draw(S32 start, S32 end, S32 selection_start
 }
 
 /*virtual*/
-BOOL LLOnHoverChangeableTextSegment::handleHover(S32 x, S32 y, MASK mask)
+bool LLOnHoverChangeableTextSegment::handleHover(S32 x, S32 y, MASK mask)
 {
     mStyle = mEditor.getSkipLinkUnderline() ? mNormalStyle : mHoveredStyle;
     return LLNormalTextSegment::handleHover(x, y, mask);
@@ -3836,15 +3843,15 @@ S32  LLImageTextSegment::getNumChars(S32 num_pixels, S32 segment_offset, S32 lin
     return 0;
 }
 
-BOOL LLImageTextSegment::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLImageTextSegment::handleToolTip(S32 x, S32 y, MASK mask)
 {
     if (!mTooltip.empty())
     {
         LLToolTipMgr::instance().show(mTooltip);
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLImageTextSegment::setToolTip(const std::string& tooltip)
diff --git a/indra/llui/lltextbase.h b/indra/llui/lltextbase.h
index 97507fe800..4120d9ea32 100644
--- a/indra/llui/lltextbase.h
+++ b/indra/llui/lltextbase.h
@@ -94,22 +94,22 @@ public:
     virtual void                dump() const;
 
     // LLMouseHandler interface
-    /*virtual*/ BOOL            handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL            handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL            handleMiddleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL            handleMiddleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL            handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL            handleRightMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL            handleDoubleClick(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL            handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL            handleScrollWheel(S32 x, S32 y, S32 clicks);
-    /*virtual*/ BOOL            handleScrollHWheel(S32 x, S32 y, S32 clicks);
-    /*virtual*/ BOOL            handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool            handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool            handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool            handleMiddleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool            handleMiddleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool            handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool            handleRightMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool            handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool            handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool            handleScrollWheel(S32 x, S32 y, S32 clicks);
+    /*virtual*/ bool            handleScrollHWheel(S32 x, S32 y, S32 clicks);
+    /*virtual*/ bool            handleToolTip(S32 x, S32 y, MASK mask);
     /*virtual*/ const std::string&  getName() const;
     /*virtual*/ void            onMouseCaptureLost();
     /*virtual*/ void            screenPointToLocal(S32 screen_x, S32 screen_y, S32* local_x, S32* local_y) const;
     /*virtual*/ void            localPointToScreen(S32 local_x, S32 local_y, S32* screen_x, S32* screen_y) const;
-    /*virtual*/ BOOL            hasMouseCapture();
+    /*virtual*/ bool            hasMouseCapture();
 
     S32                     getStart() const                    { return mStart; }
     void                    setStart(S32 start)                 { mStart = start; }
@@ -125,7 +125,7 @@ class LLNormalTextSegment : public LLTextSegment
 {
 public:
     LLNormalTextSegment( LLStyleConstSP style, S32 start, S32 end, LLTextBase& editor );
-    LLNormalTextSegment( const LLColor4& color, S32 start, S32 end, LLTextBase& editor, BOOL is_visible = TRUE);
+    LLNormalTextSegment( const LLColor4& color, S32 start, S32 end, LLTextBase& editor, bool is_visible = true);
     virtual ~LLNormalTextSegment();
 
     /*virtual*/ bool                getDimensionsF32(S32 first_char, S32 num_chars, F32& width, S32& height) const;
@@ -138,15 +138,15 @@ public:
     /*virtual*/ void                setStyle(LLStyleConstSP style)  { mStyle = style; }
     /*virtual*/ void                setToken( LLKeywordToken* token )   { mToken = token; }
     /*virtual*/ LLKeywordToken*     getToken() const                    { return mToken; }
-    /*virtual*/ BOOL                getToolTip( std::string& msg ) const;
+    /*virtual*/ bool                getToolTip( std::string& msg ) const;
     /*virtual*/ void                setToolTip(const std::string& tooltip);
     /*virtual*/ void                dump() const;
 
-    /*virtual*/ BOOL                handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL                handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL                handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL                handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL                handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool                handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool                handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool                handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool                handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool                handleToolTip(S32 x, S32 y, MASK mask);
 
 protected:
     F32                 drawClippedSegment(S32 seg_start, S32 seg_end, S32 selection_start, S32 selection_end, LLRectf rect);
@@ -170,7 +170,7 @@ class LLLabelTextSegment : public LLNormalTextSegment
 {
 public:
     LLLabelTextSegment( LLStyleConstSP style, S32 start, S32 end, LLTextBase& editor );
-    LLLabelTextSegment( const LLColor4& color, S32 start, S32 end, LLTextBase& editor, BOOL is_visible = TRUE);
+    LLLabelTextSegment( const LLColor4& color, S32 start, S32 end, LLTextBase& editor, bool is_visible = true);
 
 protected:
 
@@ -184,10 +184,10 @@ class LLEmojiTextSegment : public LLNormalTextSegment
 {
 public:
     LLEmojiTextSegment(LLStyleConstSP style, S32 start, S32 end, LLTextBase& editor);
-    LLEmojiTextSegment(const LLColor4& color, S32 start, S32 end, LLTextBase& editor, BOOL is_visible = TRUE);
+    LLEmojiTextSegment(const LLColor4& color, S32 start, S32 end, LLTextBase& editor, bool is_visible = true);
 
     bool canEdit() const override { return false; }
-    BOOL handleToolTip(S32 x, S32 y, MASK mask) override;
+    bool handleToolTip(S32 x, S32 y, MASK mask) override;
 };
 
 // Text segment that changes it's style depending of mouse pointer position ( is it inside or outside segment)
@@ -196,7 +196,7 @@ class LLOnHoverChangeableTextSegment : public LLNormalTextSegment
 public:
     LLOnHoverChangeableTextSegment( LLStyleConstSP style, LLStyleConstSP normal_style, S32 start, S32 end, LLTextBase& editor );
     /*virtual*/ F32 draw(S32 start, S32 end, S32 selection_start, S32 selection_end, const LLRectf& draw_rect);
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
 protected:
     // Style used for text when mouse pointer is over segment
     LLStyleConstSP      mHoveredStyle;
@@ -267,7 +267,7 @@ public:
     S32         getNumChars(S32 num_pixels, S32 segment_offset, S32 char_offset, S32 max_chars, S32 line_ind) const;
     F32         draw(S32 start, S32 end, S32 selection_start, S32 selection_end, const LLRectf& draw_rect);
 
-    /*virtual*/ BOOL    handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleToolTip(S32 x, S32 y, MASK mask);
     /*virtual*/ void    setToolTip(const std::string& tooltip);
 
 private:
@@ -355,32 +355,32 @@ public:
     };
 
     // LLMouseHandler interface
-    /*virtual*/ BOOL        handleMouseDown(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL        handleMouseUp(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL        handleMiddleMouseDown(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL        handleMiddleMouseUp(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL        handleRightMouseDown(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL        handleRightMouseUp(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL        handleDoubleClick(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL        handleHover(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL        handleScrollWheel(S32 x, S32 y, S32 clicks) override;
-    /*virtual*/ BOOL        handleToolTip(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleMouseDown(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleMouseUp(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleMiddleMouseDown(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleMiddleMouseUp(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleRightMouseDown(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleRightMouseUp(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleHover(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleScrollWheel(S32 x, S32 y, S32 clicks) override;
+    /*virtual*/ bool        handleToolTip(S32 x, S32 y, MASK mask) override;
 
     // LLView interface
-    /*virtual*/ void        reshape(S32 width, S32 height, BOOL called_from_parent = TRUE) override;
+    /*virtual*/ void        reshape(S32 width, S32 height, bool called_from_parent = true) override;
     /*virtual*/ void        draw() override;
 
     // LLUICtrl interface
-    /*virtual*/ BOOL        acceptsTextInput() const override { return !mReadOnly; }
+    /*virtual*/ bool        acceptsTextInput() const override { return !mReadOnly; }
     /*virtual*/ void        setColor(const LLColor4& c) override;
     virtual     void        setReadOnlyColor(const LLColor4 &c);
-    /*virtual*/ void        onVisibilityChange(BOOL new_visibility) override;
+    /*virtual*/ void        onVisibilityChange(bool new_visibility) override;
 
     /*virtual*/ void        setValue(const LLSD& value) override;
     /*virtual*/ LLTextViewModel* getViewModel() const override;
 
     // LLEditMenuHandler interface
-    /*virtual*/ BOOL        canDeselect() const override;
+    /*virtual*/ bool        canDeselect() const override;
     /*virtual*/ void        deselect() override;
 
     virtual void    onFocusReceived() override;
@@ -436,7 +436,7 @@ public:
     void                    appendText(const std::string &new_text, bool prepend_newline, const LLStyle::Params& input_params = LLStyle::Params());
 
     void                    setLabel(const LLStringExplicit& label);
-    /*virtual*/ BOOL        setLabelArg(const std::string& key, const LLStringExplicit& text) override;
+    /*virtual*/ bool        setLabelArg(const std::string& key, const LLStringExplicit& text) override;
 
     const   std::string&    getLabel()  { return mLabel.getString(); }
     const   LLWString&      getWlabel() { return mLabel.getWString();}
@@ -454,8 +454,8 @@ public:
     // force reflow of text
     void                    needsReflow(S32 index = 0);
 
-    S32                     getLength() const { return getWText().length(); }
-    S32                     getLineCount() const { return mLineInfoList.size(); }
+    S32                     getLength() const { return static_cast<S32>(getWText().length()); }
+    S32                     getLineCount() const { return static_cast<S32>(mLineInfoList.size()); }
     S32                     removeFirstLine(); // returns removed length
 
     void                    addDocumentChild(LLView* view);
@@ -470,7 +470,7 @@ public:
     F32                     getLineSpacingMult() { return mLineSpacingMult; }
     S32                     getLineSpacingPixels() { return mLineSpacingPixels; } // only for multiline
 
-    S32                     getDocIndexFromLocalCoord( S32 local_x, S32 local_y, BOOL round, bool hit_past_end_of_line = true) const;
+    S32                     getDocIndexFromLocalCoord( S32 local_x, S32 local_y, bool round, bool hit_past_end_of_line = true) const;
     LLRect                  getLocalRectFromDocIndex(S32 pos) const;
     LLRect                  getDocRectFromDocIndex(S32 pos) const;
 
@@ -545,7 +545,7 @@ protected:
     class TextCmd
     {
     public:
-        TextCmd( S32 pos, BOOL group_with_next, LLTextSegmentPtr segment = LLTextSegmentPtr() )
+        TextCmd( S32 pos, bool group_with_next, LLTextSegmentPtr segment = LLTextSegmentPtr() )
         :   mPos(pos),
             mGroupWithNext(group_with_next)
         {
@@ -555,13 +555,13 @@ protected:
             }
         }
         virtual         ~TextCmd() {}
-        virtual BOOL    execute(LLTextBase* editor, S32* delta) = 0;
+        virtual bool    execute(LLTextBase* editor, S32* delta) = 0;
         virtual S32     undo(LLTextBase* editor) = 0;
         virtual S32     redo(LLTextBase* editor) = 0;
-        virtual BOOL    canExtend(S32 pos) const { return FALSE; }
+        virtual bool    canExtend(S32 pos) const { return false; }
         virtual void    blockExtensions() {}
-        virtual BOOL    extendAndExecute( LLTextBase* editor, S32 pos, llwchar c, S32* delta ) { llassert(0); return 0; }
-        virtual BOOL    hasExtCharValue( llwchar value ) const { return FALSE; }
+        virtual bool    extendAndExecute( LLTextBase* editor, S32 pos, llwchar c, S32* delta ) { llassert(0); return 0; }
+        virtual bool    hasExtCharValue( llwchar value ) const { return false; }
 
         // Defined here so they can access protected LLTextEditor editing methods
         S32             insert(LLTextBase* editor, S32 pos, const LLWString &wstr) { return editor->insertStringNoUndo( pos, wstr, &mSegments ); }
@@ -569,11 +569,11 @@ protected:
         S32             overwrite(LLTextBase* editor, S32 pos, llwchar wc) { return editor->overwriteCharNoUndo(pos, wc); }
 
         S32             getPosition() const { return mPos; }
-        BOOL            groupWithNext() const { return mGroupWithNext; }
+        bool            groupWithNext() const { return mGroupWithNext; }
 
     protected:
         const S32           mPos;
-        BOOL                mGroupWithNext;
+        bool                mGroupWithNext;
         segment_vec_t       mSegments;
     };
 
@@ -641,7 +641,7 @@ protected:
 
     // misc
     void                            updateRects();
-    void                            needsScroll() { mScrollNeeded = TRUE; }
+    void                            needsScroll() { mScrollNeeded = true; }
 
     struct URLLabelCallback;
     // Replace a URL with a new icon and label, for example, when
@@ -695,7 +695,7 @@ protected:
     S32                         mSelectionEnd;
     LLTimer                     mTripleClickTimer;
 
-    BOOL                        mIsSelecting;       // Are we in the middle of a drag-select?
+    bool                        mIsSelecting;       // Are we in the middle of a drag-select?
 
     // spell checking
     bool                        mSpellCheck;
diff --git a/indra/llui/lltextbox.cpp b/indra/llui/lltextbox.cpp
index ba756a2906..92551b682c 100644
--- a/indra/llui/lltextbox.cpp
+++ b/indra/llui/lltextbox.cpp
@@ -39,7 +39,7 @@ static LLDefaultChildRegistry::Register<LLTextBox> r("text");
 
 // Compiler optimization, generate extern template
 template class LLTextBox* LLView::getChild<class LLTextBox>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 
 LLTextBox::LLTextBox(const LLTextBox::Params& p)
 :   LLTextBase(p),
@@ -52,9 +52,9 @@ LLTextBox::LLTextBox(const LLTextBox::Params& p)
 LLTextBox::~LLTextBox()
 {}
 
-BOOL LLTextBox::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLTextBox::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = LLTextBase::handleMouseDown(x, y, mask);
+    bool    handled = LLTextBase::handleMouseDown(x, y, mask);
 
     if (getSoundFlags() & MOUSE_DOWN)
     {
@@ -63,7 +63,7 @@ BOOL LLTextBox::handleMouseDown(S32 x, S32 y, MASK mask)
 
     if (!handled && mClickedCallback)
     {
-        handled = TRUE;
+        handled = true;
     }
 
     if (handled)
@@ -75,9 +75,9 @@ BOOL LLTextBox::handleMouseDown(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLTextBox::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLTextBox::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = LLTextBase::handleMouseUp(x, y, mask);
+    bool    handled = LLTextBase::handleMouseUp(x, y, mask);
 
     if (getSoundFlags() & MOUSE_UP)
     {
@@ -96,26 +96,26 @@ BOOL LLTextBox::handleMouseUp(S32 x, S32 y, MASK mask)
         if (mClickedCallback && !handled)
         {
             mClickedCallback();
-            handled = TRUE;
+            handled = true;
         }
     }
 
     return handled;
 }
 
-BOOL LLTextBox::handleHover(S32 x, S32 y, MASK mask)
+bool LLTextBox::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLTextBase::handleHover(x, y, mask);
+    bool handled = LLTextBase::handleHover(x, y, mask);
     if (!handled && mClickedCallback && mShowCursorHand)
     {
         // Clickable text boxes change the cursor to a hand
         LLUI::getInstance()->getWindow()->setCursor(UI_CURSOR_HAND);
-        return TRUE;
+        return true;
     }
     return handled;
 }
 
-void LLTextBox::setEnabled(BOOL enabled)
+void LLTextBox::setEnabled(bool enabled)
 {
     // just treat enabled as read-only flag
     bool read_only = !enabled;
@@ -156,16 +156,16 @@ LLSD LLTextBox::getValue() const
     return getViewModel()->getValue();
 }
 
-BOOL LLTextBox::setTextArg( const std::string& key, const LLStringExplicit& text )
+bool LLTextBox::setTextArg( const std::string& key, const LLStringExplicit& text )
 {
     mText.setArg(key, text);
     LLTextBase::setText(mText.getString());
 
-    return TRUE;
+    return true;
 }
 
 
-void LLTextBox::reshapeToFitText(BOOL called_from_parent)
+void LLTextBox::reshapeToFitText(bool called_from_parent)
 {
     reflow();
 
diff --git a/indra/llui/lltextbox.h b/indra/llui/lltextbox.h
index cdff041646..c1f829c2b9 100644
--- a/indra/llui/lltextbox.h
+++ b/indra/llui/lltextbox.h
@@ -48,11 +48,11 @@ protected:
 public:
     virtual ~LLTextBox();
 
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
 
-    /*virtual*/ void setEnabled(BOOL enabled);
+    /*virtual*/ void setEnabled(bool enabled);
 
     /*virtual*/ void setText( const LLStringExplicit& text, const LLStyle::Params& input_params = LLStyle::Params() );
 
@@ -60,13 +60,13 @@ public:
     void            setHAlign( LLFontGL::HAlign align )     { mHAlign = align; }
     void            setClickedCallback( boost::function<void (void*)> cb, void* userdata = NULL );
 
-    void            reshapeToFitText(BOOL called_from_parent = FALSE);
+    void            reshapeToFitText(bool called_from_parent = false);
 
     S32             getTextPixelWidth();
     S32             getTextPixelHeight();
 
     /*virtual*/ LLSD    getValue() const;
-    /*virtual*/ BOOL    setTextArg( const std::string& key, const LLStringExplicit& text );
+    /*virtual*/ bool    setTextArg( const std::string& key, const LLStringExplicit& text );
 
     void            setShowCursorHand(bool show_cursor) { mShowCursorHand = show_cursor; }
 
@@ -81,7 +81,7 @@ protected:
 // Build time optimization, generate once in .cpp file
 #ifndef LLTEXTBOX_CPP
 extern template class LLTextBox* LLView::getChild<class LLTextBox>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 #endif
 
 #endif
diff --git a/indra/llui/lltexteditor.cpp b/indra/llui/lltexteditor.cpp
index a76b11621a..5d30c1299a 100644
--- a/indra/llui/lltexteditor.cpp
+++ b/indra/llui/lltexteditor.cpp
@@ -71,7 +71,7 @@ static LLDefaultChildRegistry::Register<LLTextEditor> r("simple_text_editor");
 
 // Compiler optimization, generate extern template
 template class LLTextEditor* LLView::getChild<class LLTextEditor>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 
 //
 // Constants
@@ -84,12 +84,12 @@ const F32   SPELLCHECK_DELAY = 0.5f;    // delay between the last keypress and s
 class LLTextEditor::TextCmdInsert : public LLTextBase::TextCmd
 {
 public:
-    TextCmdInsert(S32 pos, BOOL group_with_next, const LLWString &ws, LLTextSegmentPtr segment)
+    TextCmdInsert(S32 pos, bool group_with_next, const LLWString &ws, LLTextSegmentPtr segment)
         : TextCmd(pos, group_with_next, segment), mWString(ws)
     {
     }
     virtual ~TextCmdInsert() {}
-    virtual BOOL execute( LLTextBase* editor, S32* delta )
+    virtual bool execute( LLTextBase* editor, S32* delta )
     {
         *delta = insert(editor, getPosition(), mWString );
         LLWStringUtil::truncate(mWString, *delta);
@@ -98,13 +98,13 @@ public:
     }
     virtual S32 undo( LLTextBase* editor )
     {
-        remove(editor, getPosition(), mWString.length() );
+        remove(editor, getPosition(), static_cast<S32>(mWString.length()));
         return getPosition();
     }
     virtual S32 redo( LLTextBase* editor )
     {
-        insert(editor, getPosition(), mWString );
-        return getPosition() + mWString.length();
+        insert(editor, getPosition(), mWString);
+        return getPosition() + static_cast<S32>(mWString.length());
     }
 
 private:
@@ -115,29 +115,29 @@ private:
 class LLTextEditor::TextCmdAddChar : public LLTextBase::TextCmd
 {
 public:
-    TextCmdAddChar( S32 pos, BOOL group_with_next, llwchar wc, LLTextSegmentPtr segment)
-        : TextCmd(pos, group_with_next, segment), mWString(1, wc), mBlockExtensions(FALSE)
+    TextCmdAddChar( S32 pos, bool group_with_next, llwchar wc, LLTextSegmentPtr segment)
+        : TextCmd(pos, group_with_next, segment), mWString(1, wc), mBlockExtensions(false)
     {
     }
     virtual void blockExtensions()
     {
-        mBlockExtensions = TRUE;
+        mBlockExtensions = true;
     }
-    virtual BOOL canExtend(S32 pos) const
+    virtual bool canExtend(S32 pos) const
     {
         // cannot extend text with custom segments
-        if (!mSegments.empty()) return FALSE;
+        if (!mSegments.empty()) return false;
 
         return !mBlockExtensions && (pos == getPosition() + (S32)mWString.length());
     }
-    virtual BOOL execute( LLTextBase* editor, S32* delta )
+    virtual bool execute( LLTextBase* editor, S32* delta )
     {
         *delta = insert(editor, getPosition(), mWString);
         LLWStringUtil::truncate(mWString, *delta);
         //mWString = wstring_truncate(mWString, *delta);
         return (*delta != 0);
     }
-    virtual BOOL extendAndExecute( LLTextBase* editor, S32 pos, llwchar wc, S32* delta )
+    virtual bool extendAndExecute( LLTextBase* editor, S32 pos, llwchar wc, S32* delta )
     {
         LLWString ws;
         ws += wc;
@@ -151,18 +151,18 @@ public:
     }
     virtual S32 undo( LLTextBase* editor )
     {
-        remove(editor, getPosition(), mWString.length() );
+        remove(editor, getPosition(), static_cast<S32>(mWString.length()));
         return getPosition();
     }
     virtual S32 redo( LLTextBase* editor )
     {
-        insert(editor, getPosition(), mWString );
-        return getPosition() + mWString.length();
+        insert(editor, getPosition(), mWString);
+        return getPosition() + static_cast<S32>(mWString.length());
     }
 
 private:
     LLWString   mWString;
-    BOOL        mBlockExtensions;
+    bool        mBlockExtensions;
 
 };
 
@@ -170,7 +170,7 @@ private:
 class LLTextEditor::TextCmdAddString : public LLTextBase::TextCmd
 {
 public:
-	TextCmdAddString(S32 pos, BOOL group_with_next, char *str,
+	TextCmdAddString(S32 pos, bool group_with_next, char *str,
 			LLTextSegmentPtr segment) :
 		TextCmd(pos, group_with_next, segment),
 		mWString(utf8str_to_wstring(str)),
@@ -181,14 +181,14 @@ public:
 	{
 		mBlockExtensions = TRUE;
 	}
-	virtual BOOL canExtend(S32 pos) const
+	virtual bool canExtend(S32 pos) const
 	{
 		if (!mSegments.empty()) return FALSE;
 
 		return !mBlockExtensions
 			&& (pos == getPosition() + (S32)mWString.length());
 	}
-	virtual BOOL execute(LLTextBase* editor, S32* delta)
+	virtual bool execute(LLTextBase* editor, S32* delta)
 	{
 		*delta = insert(editor, getPosition(), mWString);
 		LLWStringUtil::truncate(mWString, *delta);
@@ -207,7 +207,7 @@ public:
 
 private:
 	LLWString	mWString;
-	BOOL		mBlockExtensions;
+	bool		mBlockExtensions;
 };
 
 ///////////////////////////////////////////////////////////////////
@@ -215,15 +215,15 @@ private:
 class LLTextEditor::TextCmdOverwriteChar : public LLTextBase::TextCmd
 {
 public:
-    TextCmdOverwriteChar( S32 pos, BOOL group_with_next, llwchar wc)
+    TextCmdOverwriteChar( S32 pos, bool group_with_next, llwchar wc)
         : TextCmd(pos, group_with_next), mChar(wc), mOldChar(0) {}
 
-    virtual BOOL execute( LLTextBase* editor, S32* delta )
+    virtual bool execute( LLTextBase* editor, S32* delta )
     {
         mOldChar = editor->getWText()[getPosition()];
         overwrite(editor, getPosition(), mChar);
         *delta = 0;
-        return TRUE;
+        return true;
     }
     virtual S32 undo( LLTextBase* editor )
     {
@@ -246,12 +246,12 @@ private:
 class LLTextEditor::TextCmdRemove : public LLTextBase::TextCmd
 {
 public:
-    TextCmdRemove( S32 pos, BOOL group_with_next, S32 len, segment_vec_t& segments ) :
+    TextCmdRemove( S32 pos, bool group_with_next, S32 len, segment_vec_t& segments ) :
         TextCmd(pos, group_with_next), mLen(len)
     {
         std::swap(mSegments, segments);
     }
-    virtual BOOL execute( LLTextBase* editor, S32* delta )
+    virtual bool execute( LLTextBase* editor, S32* delta )
     {
         mWString = editor->getWText().substr(getPosition(), mLen);
         *delta = remove(editor, getPosition(), mLen );
@@ -260,7 +260,7 @@ public:
     virtual S32 undo( LLTextBase* editor )
     {
         insert(editor, getPosition(), mWString);
-        return getPosition() + mWString.length();
+        return getPosition() + static_cast<S32>(mWString.length());
     }
     virtual S32 redo( LLTextBase* editor )
     {
@@ -293,7 +293,7 @@ LLTextEditor::Params::Params()
 LLTextEditor::LLTextEditor(const LLTextEditor::Params& p) :
     LLTextBase(p),
     mAutoreplaceCallback(),
-    mBaseDocIsPristine(TRUE),
+    mBaseDocIsPristine(true),
     mPristineCmd( NULL ),
     mLastCmd( NULL ),
     mDefaultColor( p.default_color() ),
@@ -387,7 +387,7 @@ void LLTextEditor::setText(const LLStringExplicit &utf8str, const LLStyle::Param
     resetDirty();
 }
 
-void LLTextEditor::selectNext(const std::string& search_text_in, BOOL case_insensitive, BOOL wrap)
+void LLTextEditor::selectNext(const std::string& search_text_in, bool case_insensitive, bool wrap)
 {
     if (search_text_in.empty())
     {
@@ -409,22 +409,22 @@ void LLTextEditor::selectNext(const std::string& search_text_in, BOOL case_insen
         if (selected_text == search_text)
         {
             // We already have this word selected, we are searching for the next.
-            setCursorPos(mCursorPos + search_text.size());
+            setCursorPos(mCursorPos + static_cast<S32>(search_text.size()));
         }
     }
 
-    S32 loc = text.find(search_text,mCursorPos);
+    S32 loc = static_cast<S32>(text.find(search_text,mCursorPos));
 
     // If Maybe we wrapped, search again
     if (wrap && (-1 == loc))
     {
-        loc = text.find(search_text);
+        loc = static_cast<S32>(text.find(search_text));
     }
 
     // If still -1, then search_text just isn't found.
     if (-1 == loc)
     {
-        mIsSelecting = FALSE;
+        mIsSelecting = false;
         mSelectionEnd = 0;
         mSelectionStart = 0;
         return;
@@ -432,15 +432,15 @@ void LLTextEditor::selectNext(const std::string& search_text_in, BOOL case_insen
 
     setCursorPos(loc);
 
-    mIsSelecting = TRUE;
+    mIsSelecting = true;
     mSelectionEnd = mCursorPos;
     mSelectionStart = llmin((S32)getLength(), (S32)(mCursorPos + search_text.size()));
 }
 
-BOOL LLTextEditor::replaceText(const std::string& search_text_in, const std::string& replace_text,
-                               BOOL case_insensitive, BOOL wrap)
+bool LLTextEditor::replaceText(const std::string& search_text_in, const std::string& replace_text,
+                               bool case_insensitive, bool wrap)
 {
-    BOOL replaced = FALSE;
+    bool replaced = false;
 
     if (search_text_in.empty())
     {
@@ -462,7 +462,7 @@ BOOL LLTextEditor::replaceText(const std::string& search_text_in, const std::str
         if (selected_text == search_text)
         {
             insertText(replace_text);
-            replaced = TRUE;
+            replaced = true;
         }
     }
 
@@ -470,15 +470,15 @@ BOOL LLTextEditor::replaceText(const std::string& search_text_in, const std::str
     return replaced;
 }
 
-void LLTextEditor::replaceTextAll(const std::string& search_text, const std::string& replace_text, BOOL case_insensitive)
+void LLTextEditor::replaceTextAll(const std::string& search_text, const std::string& replace_text, bool case_insensitive)
 {
     startOfDoc();
-    selectNext(search_text, case_insensitive, FALSE);
+    selectNext(search_text, case_insensitive, false);
 
-    BOOL replaced = TRUE;
+    bool replaced = true;
     while ( replaced )
     {
-        replaced = replaceText(search_text,replace_text, case_insensitive, FALSE);
+        replaced = replaceText(search_text,replace_text, case_insensitive, false);
     }
 }
 
@@ -566,7 +566,7 @@ void LLTextEditor::setShowEmojiHelper(bool show)
     mShowEmojiHelper = show;
 }
 
-BOOL LLTextEditor::selectionContainsLineBreaks()
+bool LLTextEditor::selectionContainsLineBreaks()
 {
     if (hasSelection())
     {
@@ -578,11 +578,11 @@ BOOL LLTextEditor::selectionContainsLineBreaks()
         {
             if (wtext[i] == '\n')
             {
-                return TRUE;
+                return true;
             }
         }
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -613,7 +613,7 @@ S32 LLTextEditor::indentLine( S32 pos, S32 spaces )
             LLWString wtext = getWText();
             if (wtext[pos] == ' ')
             {
-                delta_spaces += remove( pos, 1, FALSE );
+                delta_spaces += remove( pos, 1, false );
             }
         }
     }
@@ -628,7 +628,7 @@ void LLTextEditor::indentSelectedLines( S32 spaces )
         LLWString text = getWText();
         S32 left = llmin( mSelectionStart, mSelectionEnd );
         S32 right = left + llabs( mSelectionStart - mSelectionEnd );
-        BOOL cursor_on_right = (mSelectionEnd > mSelectionStart);
+        bool cursor_on_right = (mSelectionEnd > mSelectionStart);
         S32 cur = left;
 
         // Expand left to start of line
@@ -707,9 +707,9 @@ void LLTextEditor::indentSelectedLines( S32 spaces )
 }
 
 //virtual
-BOOL LLTextEditor::canSelectAll() const
+bool LLTextEditor::canSelectAll() const
 {
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -751,15 +751,15 @@ void LLTextEditor::handleEmojiCommit(llwchar emoji)
     }
 }
 
-BOOL LLTextEditor::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLTextEditor::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     // set focus first, in case click callbacks want to change it
     // RN: do we really need to have a tab stop?
     if (hasTabStop())
     {
-        setFocus( TRUE );
+        setFocus( true );
     }
 
     // Let scrollbar have first dibs
@@ -772,7 +772,7 @@ BOOL LLTextEditor::handleMouseDown(S32 x, S32 y, MASK mask)
             deselect();
         }
 
-        BOOL start_select = TRUE;
+        bool start_select = true;
         if( start_select )
         {
             // If we're not scrolling (handled by child), then we're selecting
@@ -791,7 +791,7 @@ BOOL LLTextEditor::handleMouseDown(S32 x, S32 y, MASK mask)
                     mSelectionEnd = mCursorPos;
                 }
                 // assume we're starting a drag select
-                mIsSelecting = TRUE;
+                mIsSelecting = true;
             }
             else
             {
@@ -800,7 +800,7 @@ BOOL LLTextEditor::handleMouseDown(S32 x, S32 y, MASK mask)
             }
         }
 
-        handled = TRUE;
+        handled = true;
     }
 
     // Delay cursor flashing
@@ -813,11 +813,11 @@ BOOL LLTextEditor::handleMouseDown(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLTextEditor::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLTextEditor::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     if (hasTabStop())
     {
-        setFocus(TRUE);
+        setFocus(true);
     }
 
     bool show_menu = false;
@@ -825,7 +825,7 @@ BOOL LLTextEditor::handleRightMouseDown(S32 x, S32 y, MASK mask)
     // Prefer editor menu if it has selection. See EXT-6806.
     if (hasSelection())
     {
-        S32 click_pos = getDocIndexFromLocalCoord(x, y, FALSE);
+        S32 click_pos = getDocIndexFromLocalCoord(x, y, false);
         if (click_pos > mSelectionStart && click_pos < mSelectionEnd)
         {
             show_menu = true;
@@ -843,16 +843,16 @@ BOOL LLTextEditor::handleRightMouseDown(S32 x, S32 y, MASK mask)
         showContextMenu(x, y);
     }
 
-    return TRUE;
+    return true;
 }
 
 
 
-BOOL LLTextEditor::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
+bool LLTextEditor::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (hasTabStop())
     {
-        setFocus(TRUE);
+        setFocus(true);
     }
 
     if (!LLTextBase::handleMouseDown(x, y, mask))
@@ -864,13 +864,13 @@ BOOL LLTextEditor::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
             pastePrimary();
         }
     }
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLTextEditor::handleHover(S32 x, S32 y, MASK mask)
+bool LLTextEditor::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if(hasMouseCapture() )
     {
@@ -887,7 +887,7 @@ BOOL LLTextEditor::handleHover(S32 x, S32 y, MASK mask)
         }
         LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (active)" << LL_ENDL;
         getWindow()->setCursor(UI_CURSOR_IBEAM);
-        handled = TRUE;
+        handled = true;
     }
 
     if( !handled )
@@ -905,16 +905,16 @@ BOOL LLTextEditor::handleHover(S32 x, S32 y, MASK mask)
     if( !handled )
     {
         getWindow()->setCursor(UI_CURSOR_IBEAM);
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
 }
 
 
-BOOL LLTextEditor::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLTextEditor::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     // if I'm not currently selecting text
     if (!(mIsSelecting && hasMouseCapture()))
@@ -940,7 +940,7 @@ BOOL LLTextEditor::handleMouseUp(S32 x, S32 y, MASK mask)
         // take selection to 'primary' clipboard
         updatePrimary();
 
-        handled = TRUE;
+        handled = true;
     }
 
     // Delay cursor flashing
@@ -950,16 +950,16 @@ BOOL LLTextEditor::handleMouseUp(S32 x, S32 y, MASK mask)
     {
         gFocusMgr.setMouseCapture( NULL );
 
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
 }
 
 
-BOOL LLTextEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLTextEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     // let scrollbar and text segments have first dibs
     handled = LLTextBase::handleDoubleClick(x, y, mask);
@@ -997,7 +997,7 @@ BOOL LLTextEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
 
         // We don't want handleMouseUp() to "finish" the selection (and thereby
         // set mSelectionEnd to where the mouse is), so we finish the selection here.
-        mIsSelecting = FALSE;
+        mIsSelecting = false;
 
         // delay cursor flashing
         resetCursorBlink();
@@ -1005,7 +1005,7 @@ BOOL LLTextEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
         // take selection to 'primary' clipboard
         updatePrimary();
 
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
@@ -1068,7 +1068,7 @@ S32 LLTextEditor::insert(S32 pos, const LLWString &wstr, bool group_with_next_op
 S32 LLTextEditor::remove(S32 pos, S32 length, bool group_with_next_op)
 {
     S32 end_pos = getEditableIndex(pos + length, true);
-    BOOL removedChar = FALSE;
+    bool removedChar = false;
 
     segment_vec_t segments_to_remove;
     // store text segments
@@ -1090,7 +1090,7 @@ S32 LLTextEditor::overwriteChar(S32 pos, llwchar wc)
     }
     else
     {
-        return execute(new TextCmdOverwriteChar(pos, FALSE, wc));
+        return execute(new TextCmdOverwriteChar(pos, false, wc));
     }
 }
 
@@ -1205,7 +1205,7 @@ S32 LLTextEditor::addChar(S32 pos, llwchar wc)
         return delta;
     }
 
-    return execute(new TextCmdAddChar(pos, FALSE, wc, LLTextSegmentPtr()));
+    return execute(new TextCmdAddChar(pos, false, wc, LLTextSegmentPtr()));
 }
 
 S32 LLTextEditor::addString(S32 pos, char *str)
@@ -1229,7 +1229,7 @@ void LLTextEditor::addChar(llwchar wc)
 
     if (hasSelection())
     {
-        deleteSelection(TRUE);
+        deleteSelection(true);
     }
     else if (LL_KIM_OVERWRITE == gKeyboard->getInsertMode())
     {
@@ -1320,7 +1320,7 @@ void LLTextEditor::tryToShowEmojiHelper()
     }
 }
 
-void LLTextEditor::addLineBreakChar(BOOL group_together)
+void LLTextEditor::addLineBreakChar(bool group_together)
 {
     if( !getEnabled() )
     {
@@ -1328,7 +1328,7 @@ void LLTextEditor::addLineBreakChar(BOOL group_together)
     }
     if( hasSelection() )
     {
-        deleteSelection(TRUE);
+        deleteSelection(true);
     }
     else if (LL_KIM_OVERWRITE == gKeyboard->getInsertMode())
     {
@@ -1344,13 +1344,13 @@ void LLTextEditor::addLineBreakChar(BOOL group_together)
 }
 
 
-BOOL LLTextEditor::handleSelectionKey(const KEY key, const MASK mask)
+bool LLTextEditor::handleSelectionKey(const KEY key, const MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if( mask & MASK_SHIFT )
     {
-        handled = TRUE;
+        handled = true;
 
         switch( key )
         {
@@ -1431,7 +1431,7 @@ BOOL LLTextEditor::handleSelectionKey(const KEY key, const MASK mask)
             break;
 
         default:
-            handled = FALSE;
+            handled = false;
             break;
         }
     }
@@ -1445,14 +1445,14 @@ BOOL LLTextEditor::handleSelectionKey(const KEY key, const MASK mask)
     return handled;
 }
 
-BOOL LLTextEditor::handleNavigationKey(const KEY key, const MASK mask)
+bool LLTextEditor::handleNavigationKey(const KEY key, const MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     // Ignore capslock key
     if( MASK_NONE == mask )
     {
-        handled = TRUE;
+        handled = true;
         switch( key )
         {
         case KEY_UP:
@@ -1517,7 +1517,7 @@ BOOL LLTextEditor::handleNavigationKey(const KEY key, const MASK mask)
             break;
 
         default:
-            handled = FALSE;
+            handled = false;
             break;
         }
     }
@@ -1530,7 +1530,7 @@ BOOL LLTextEditor::handleNavigationKey(const KEY key, const MASK mask)
     return handled;
 }
 
-void LLTextEditor::deleteSelection(BOOL group_with_next_op )
+void LLTextEditor::deleteSelection(bool group_with_next_op )
 {
     if( getEnabled() && hasSelection() )
     {
@@ -1545,7 +1545,7 @@ void LLTextEditor::deleteSelection(BOOL group_with_next_op )
 }
 
 // virtual
-BOOL LLTextEditor::canCut() const
+bool LLTextEditor::canCut() const
 {
     return !mReadOnly && hasSelection();
 }
@@ -1560,12 +1560,12 @@ void LLTextEditor::cut()
     S32 left_pos = llmin( mSelectionStart, mSelectionEnd );
     S32 length = llabs( mSelectionStart - mSelectionEnd );
     LLClipboard::instance().copyToClipboard( getWText(), left_pos, length);
-    deleteSelection( FALSE );
+    deleteSelection( false );
 
     onKeyStroke();
 }
 
-BOOL LLTextEditor::canCopy() const
+bool LLTextEditor::canCopy() const
 {
     return hasSelection();
 }
@@ -1582,7 +1582,7 @@ void LLTextEditor::copy()
     LLClipboard::instance().copyToClipboard(getWText(), left_pos, length);
 }
 
-BOOL LLTextEditor::canPaste() const
+bool LLTextEditor::canPaste() const
 {
     return !mReadOnly && LLClipboard::instance().isTextAvailable();
 }
@@ -1637,7 +1637,7 @@ void LLTextEditor::pasteHelper(bool is_primary)
     // Delete any selected characters (the paste replaces them)
     if( (!is_primary) && hasSelection() )
     {
-        deleteSelection(TRUE);
+        deleteSelection(true);
     }
 
     // Clean up string (replace tabs and remove characters that our fonts don't support).
@@ -1666,8 +1666,8 @@ void LLTextEditor::cleanStringForPaste(LLWString & clean_string)
     if( mAllowEmbeddedItems )
     {
         const llwchar LF = 10;
-        S32 len = clean_string.length();
-        for( S32 i = 0; i < len; i++ )
+        auto len = clean_string.length();
+        for( size_t i = 0; i < len; i++ )
         {
             llwchar wc = clean_string[i];
             if( (wc < LLFontFreetype::FIRST_CHAR) && (wc != LF) )
@@ -1693,9 +1693,9 @@ void LLTextEditor::pasteTextWithLinebreaks(LLWString & clean_string)
         if(pos!=start)
         {
             std::basic_string<llwchar> str = std::basic_string<llwchar>(clean_string,start,pos-start);
-            setCursorPos(mCursorPos + insert(mCursorPos, str, TRUE, LLTextSegmentPtr()));
+            setCursorPos(mCursorPos + insert(mCursorPos, str, true, LLTextSegmentPtr()));
         }
-        addLineBreakChar(TRUE);         // Add a line break and group with the next addition.
+        addLineBreakChar(true);         // Add a line break and group with the next addition.
 
         start = pos+1;
         pos = clean_string.find('\n',start);
@@ -1704,11 +1704,11 @@ void LLTextEditor::pasteTextWithLinebreaks(LLWString & clean_string)
     if (pos != start)
     {
         std::basic_string<llwchar> str = std::basic_string<llwchar>(clean_string,start,clean_string.length()-start);
-        setCursorPos(mCursorPos + insert(mCursorPos, str, FALSE, LLTextSegmentPtr()));
+        setCursorPos(mCursorPos + insert(mCursorPos, str, false, LLTextSegmentPtr()));
     }
     else
     {
-        addLineBreakChar(FALSE);        // Add a line break and end the grouping.
+        addLineBreakChar(false);        // Add a line break and end the grouping.
     }
 }
 
@@ -1724,7 +1724,7 @@ void LLTextEditor::copyPrimary()
     LLClipboard::instance().copyToClipboard(getWText(), left_pos, length, true);
 }
 
-BOOL LLTextEditor::canPastePrimary() const
+bool LLTextEditor::canPastePrimary() const
 {
     return !mReadOnly && LLClipboard::instance().isTextAvailable(true);
 }
@@ -1737,13 +1737,13 @@ void LLTextEditor::updatePrimary()
     }
 }
 
-BOOL LLTextEditor::handleControlKey(const KEY key, const MASK mask)
+bool LLTextEditor::handleControlKey(const KEY key, const MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if( mask & MASK_CONTROL )
     {
-        handled = TRUE;
+        handled = true;
 
         switch( key )
         {
@@ -1807,7 +1807,7 @@ BOOL LLTextEditor::handleControlKey(const KEY key, const MASK mask)
             break;
 
         default:
-            handled = FALSE;
+            handled = false;
             break;
         }
     }
@@ -1821,11 +1821,11 @@ BOOL LLTextEditor::handleControlKey(const KEY key, const MASK mask)
 }
 
 
-BOOL LLTextEditor::handleSpecialKey(const KEY key, const MASK mask)
+bool LLTextEditor::handleSpecialKey(const KEY key, const MASK mask)
     {
-    BOOL handled = TRUE;
+    bool handled = true;
 
-    if (mReadOnly) return FALSE;
+    if (mReadOnly) return false;
 
     switch( key )
     {
@@ -1839,7 +1839,7 @@ BOOL LLTextEditor::handleSpecialKey(const KEY key, const MASK mask)
     case KEY_BACKSPACE:
         if( hasSelection() )
         {
-            deleteSelection(FALSE);
+            deleteSelection(false);
         }
         else
         if( 0 < mCursorPos )
@@ -1858,7 +1858,7 @@ BOOL LLTextEditor::handleSpecialKey(const KEY key, const MASK mask)
         {
             if( hasSelection() && !mKeepSelectionOnReturn )
             {
-                deleteSelection(FALSE);
+                deleteSelection(false);
             }
             if (mAutoIndent)
             {
@@ -1867,7 +1867,7 @@ BOOL LLTextEditor::handleSpecialKey(const KEY key, const MASK mask)
         }
         else
         {
-            handled = FALSE;
+            handled = false;
             break;
         }
         break;
@@ -1875,7 +1875,7 @@ BOOL LLTextEditor::handleSpecialKey(const KEY key, const MASK mask)
     case KEY_TAB:
         if (mask & MASK_CONTROL)
         {
-            handled = FALSE;
+            handled = false;
             break;
         }
         if( hasSelection() && selectionContainsLineBreaks() )
@@ -1886,7 +1886,7 @@ BOOL LLTextEditor::handleSpecialKey(const KEY key, const MASK mask)
         {
             if( hasSelection() )
             {
-                deleteSelection(FALSE);
+                deleteSelection(false);
             }
 
             S32 offset = getLineOffsetFromDocIndex(mCursorPos);
@@ -1900,7 +1900,7 @@ BOOL LLTextEditor::handleSpecialKey(const KEY key, const MASK mask)
         break;
 
     default:
-        handled = FALSE;
+        handled = false;
         break;
     }
 
@@ -1938,15 +1938,15 @@ void LLTextEditor::unindentLineBeforeCloseBrace()
 }
 
 
-BOOL LLTextEditor::handleKeyHere(KEY key, MASK mask )
+bool LLTextEditor::handleKeyHere(KEY key, MASK mask )
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     // Special case for TAB.  If want to move to next field, report
     // not handled and let the parent take care of field movement.
     if (KEY_TAB == key && mTabsToNextField)
     {
-        return FALSE;
+        return false;
     }
 
     if (mReadOnly && mScroller)
@@ -1959,7 +1959,7 @@ BOOL LLTextEditor::handleKeyHere(KEY key, MASK mask )
     {
         if (!mReadOnly && mShowEmojiHelper && LLEmojiHelper::instance().handleKey(this, key, mask))
         {
-            return TRUE;
+            return true;
         }
 
         if (mEnableTooltipPaste &&
@@ -1976,7 +1976,7 @@ BOOL LLTextEditor::handleKeyHere(KEY key, MASK mask )
                 // Delete any selected characters (the tooltip text replaces them)
                 if(hasSelection())
                 {
-                    deleteSelection(TRUE);
+                    deleteSelection(true);
                 }
 
                 std::basic_string<llwchar>::size_type pos = tool_tip_text.find('\n',0);
@@ -1988,7 +1988,7 @@ BOOL LLTextEditor::handleKeyHere(KEY key, MASK mask )
                 // Add the text
                 cleanStringForPaste(tool_tip_text);
                 pasteTextWithLinebreaks(tool_tip_text);
-                handled = TRUE;
+                handled = true;
             }
         }
         else
@@ -2016,21 +2016,21 @@ BOOL LLTextEditor::handleKeyHere(KEY key, MASK mask )
 }
 
 
-BOOL LLTextEditor::handleUnicodeCharHere(llwchar uni_char)
+bool LLTextEditor::handleUnicodeCharHere(llwchar uni_char)
 {
     if ((uni_char < 0x20) || (uni_char == 0x7F)) // Control character or DEL
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     // Handle most keys only if the text editor is writeable.
     if( !mReadOnly )
     {
         if (mShowEmojiHelper && uni_char < 0x80 && LLEmojiHelper::instance().handleKey(this, (KEY)uni_char, MASK_NONE))
         {
-            return TRUE;
+            return true;
         }
 
         if( mAutoIndent && '}' == uni_char )
@@ -2044,7 +2044,7 @@ BOOL LLTextEditor::handleUnicodeCharHere(llwchar uni_char)
         // Keys that add characters temporarily hide the cursor
         getWindow()->hideCursorUntilMouseMove();
 
-        handled = TRUE;
+        handled = true;
     }
 
     if( handled )
@@ -2060,7 +2060,7 @@ BOOL LLTextEditor::handleUnicodeCharHere(llwchar uni_char)
     return handled;
 }
 
-BOOL LLTextEditor::handleUnicodeStringHere(char *uni_str, bool editing)
+bool LLTextEditor::handleUnicodeStringHere(char *uni_str, bool editing)
 {
 	auto handled = FALSE;
 
@@ -2080,7 +2080,7 @@ BOOL LLTextEditor::handleUnicodeStringHere(char *uni_str, bool editing)
 }
 
 // virtual
-BOOL LLTextEditor::canDoDelete() const
+bool LLTextEditor::canDoDelete() const
 {
     return !mReadOnly && ( !mPassDelete || ( hasSelection() || (mCursorPos < getLength())) );
 }
@@ -2093,7 +2093,7 @@ void LLTextEditor::doDelete()
     }
     if( hasSelection() )
     {
-        deleteSelection(FALSE);
+        deleteSelection(false);
     }
     else
     if( mCursorPos < getLength() )
@@ -2137,14 +2137,14 @@ void LLTextEditor::doDelete()
 
 void LLTextEditor::blockUndo()
 {
-    mBaseDocIsPristine = FALSE;
+    mBaseDocIsPristine = false;
     mLastCmd = NULL;
     std::for_each(mUndoStack.begin(), mUndoStack.end(), DeletePointer());
     mUndoStack.clear();
 }
 
 // virtual
-BOOL LLTextEditor::canUndo() const
+bool LLTextEditor::canUndo() const
 {
     return !mReadOnly && mLastCmd != NULL;
 }
@@ -2175,7 +2175,7 @@ void LLTextEditor::undo()
     onKeyStroke();
 }
 
-BOOL LLTextEditor::canRedo() const
+bool LLTextEditor::canRedo() const
 {
     return !mReadOnly && (mUndoStack.size() > 0) && (mLastCmd != mUndoStack.front());
 }
@@ -2254,7 +2254,7 @@ void LLTextEditor::onCommit()
     LLTextBase::onCommit();
 }
 
-void LLTextEditor::setEnabled(BOOL enabled)
+void LLTextEditor::setEnabled(bool enabled)
 {
     // just treat enabled as read-only flag
     bool read_only = !enabled;
@@ -2287,7 +2287,7 @@ void LLTextEditor::showContextMenu(S32 x, S32 y)
     // Route menu to this class
     // previously this was done in ::handleRightMoseDown:
     //if(hasTabStop())
-    // setFocus(TRUE)  - why? weird...
+    // setFocus(true)  - why? weird...
     // and then inside setFocus
     // ....
     //    gEditMenuHandler = this;
@@ -2321,7 +2321,7 @@ void LLTextEditor::showContextMenu(S32 x, S32 y)
 
         // If the cursor is on a misspelled word, retrieve suggestions for it
         std::string misspelled_word = getMisspelledWord(mCursorPos);
-        if ((is_misspelled = !misspelled_word.empty()) == true)
+        if ((is_misspelled = !misspelled_word.empty()))
         {
             LLSpellChecker::instance().getSuggestions(misspelled_word, mSuggestionList);
         }
@@ -2465,9 +2465,9 @@ void LLTextEditor::draw()
 
 // Start or stop the editor from accepting text-editing keystrokes
 // see also LLLineEditor
-void LLTextEditor::setFocus( BOOL new_state )
+void LLTextEditor::setFocus( bool new_state )
 {
-    BOOL old_state = hasFocus();
+    bool old_state = hasFocus();
 
     // Don't change anything if the focus state didn't change
     if (new_state == old_state) return;
@@ -2475,7 +2475,7 @@ void LLTextEditor::setFocus( BOOL new_state )
     // Notify early if we are losing focus.
     if (!new_state)
     {
-        getWindow()->allowLanguageTextInput(this, FALSE);
+        getWindow()->allowLanguageTextInput(this, false);
     }
 
     LLTextBase::setFocus( new_state );
@@ -2507,7 +2507,7 @@ void LLTextEditor::setCursorAndScrollToEnd()
     endOfDoc();
 }
 
-void LLTextEditor::getCurrentLineAndColumn( S32* line, S32* col, BOOL include_wordwrap )
+void LLTextEditor::getCurrentLineAndColumn( S32* line, S32* col, bool include_wordwrap )
 {
     *line = getLineNumFromDocIndex(mCursorPos, include_wordwrap);
     *col = getLineOffsetFromDocIndex(mCursorPos, include_wordwrap);
@@ -2549,32 +2549,32 @@ void LLTextEditor::autoIndent()
 // Inserts new text at the cursor position
 void LLTextEditor::insertText(const std::string &new_text)
 {
-    BOOL enabled = getEnabled();
-    setEnabled( TRUE );
+    bool enabled = getEnabled();
+    setEnabled( true );
 
     // Delete any selected characters (the insertion replaces them)
     if( hasSelection() )
     {
-        deleteSelection(TRUE);
+        deleteSelection(true);
     }
 
-    setCursorPos(mCursorPos + insert( mCursorPos, utf8str_to_wstring(new_text), FALSE, LLTextSegmentPtr() ));
+    setCursorPos(mCursorPos + insert( mCursorPos, utf8str_to_wstring(new_text), false, LLTextSegmentPtr() ));
 
     setEnabled( enabled );
 }
 
 void LLTextEditor::insertText(LLWString &new_text)
 {
-    BOOL enabled = getEnabled();
-    setEnabled( TRUE );
+    bool enabled = getEnabled();
+    setEnabled( true );
 
     // Delete any selected characters (the insertion replaces them)
     if( hasSelection() )
     {
-        deleteSelection(TRUE);
+        deleteSelection(true);
     }
 
-    setCursorPos(mCursorPos + insert( mCursorPos, new_text, FALSE, LLTextSegmentPtr() ));
+    setCursorPos(mCursorPos + insert( mCursorPos, new_text, false, LLTextSegmentPtr() ));
 
     setEnabled( enabled );
 }
@@ -2584,10 +2584,10 @@ void LLTextEditor::appendWidget(const LLInlineViewSegment::Params& params, const
     // Save old state
     S32 selection_start = mSelectionStart;
     S32 selection_end = mSelectionEnd;
-    BOOL was_selecting = mIsSelecting;
+    bool was_selecting = mIsSelecting;
     S32 cursor_pos = mCursorPos;
     S32 old_length = getLength();
-    BOOL cursor_was_at_end = (mCursorPos == old_length);
+    bool cursor_was_at_end = (mCursorPos == old_length);
 
     deselect();
 
@@ -2595,8 +2595,8 @@ void LLTextEditor::appendWidget(const LLInlineViewSegment::Params& params, const
 
     LLWString widget_wide_text = utf8str_to_wstring(text);
 
-    LLTextSegmentPtr segment = new LLInlineViewSegment(params, old_length, old_length + widget_wide_text.size());
-    insert(getLength(), widget_wide_text, FALSE, segment);
+    LLTextSegmentPtr segment = new LLInlineViewSegment(params, old_length, old_length + static_cast<S32>(widget_wide_text.size()));
+    insert(getLength(), widget_wide_text, false, segment);
 
     // Set the cursor and scroll position
     if( selection_start != selection_end )
@@ -2626,7 +2626,7 @@ void LLTextEditor::removeTextFromEnd(S32 num_chars)
 {
     if (num_chars <= 0) return;
 
-    remove(getLength() - num_chars, num_chars, FALSE);
+    remove(getLength() - num_chars, num_chars, false);
 
     S32 len = getLength();
     setCursorPos (llclamp(mCursorPos, 0, len));
@@ -2642,7 +2642,7 @@ void LLTextEditor::onSpellCheckPerformed()
 {
     if (isPristine())
     {
-        mBaseDocIsPristine = FALSE;
+        mBaseDocIsPristine = false;
     }
 }
 
@@ -2659,7 +2659,7 @@ void LLTextEditor::makePristine()
     }
 }
 
-BOOL LLTextEditor::isPristine() const
+bool LLTextEditor::isPristine() const
 {
     if( mPristineCmd )
     {
@@ -2672,7 +2672,7 @@ BOOL LLTextEditor::isPristine() const
     }
 }
 
-BOOL LLTextEditor::tryToRevertToPristineState()
+bool LLTextEditor::tryToRevertToPristineState()
 {
     if( !isPristine() )
     {
@@ -2701,7 +2701,7 @@ BOOL LLTextEditor::tryToRevertToPristineState()
         }
     }
 
-    return isPristine(); // TRUE => success
+    return isPristine(); // true => success
 }
 
 void LLTextEditor::updateLinkSegments()
@@ -2760,7 +2760,7 @@ void LLTextEditor::onMouseCaptureLost()
 ///////////////////////////////////////////////////////////////////
 // Hack for Notecards
 
-BOOL LLTextEditor::importBuffer(const char* buffer, S32 length )
+bool LLTextEditor::importBuffer(const char* buffer, S32 length )
 {
     std::istringstream instream(buffer);
 
@@ -2779,20 +2779,20 @@ BOOL LLTextEditor::importBuffer(const char* buffer, S32 length )
     if( 1 != sscanf(tbuf, "Linden text version %d", &version) )
     {
         LL_WARNS() << "Invalid Linden text file header " << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if( 1 != version )
     {
         LL_WARNS() << "Invalid Linden text file version: " << version << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     instream.getline(tbuf, MAX_STRING);
     if( 0 != sscanf(tbuf, "{") )
     {
         LL_WARNS() << "Invalid Linden text file format" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     S32 text_len = 0;
@@ -2800,37 +2800,37 @@ BOOL LLTextEditor::importBuffer(const char* buffer, S32 length )
     if( 1 != sscanf(tbuf, "Text length %d", &text_len) )
     {
         LL_WARNS() << "Invalid Linden text length field" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if( text_len > mMaxTextByteLength )
     {
         LL_WARNS() << "Invalid Linden text length: " << text_len << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
-    BOOL success = TRUE;
+    bool success = true;
 
     char* text = new char[ text_len + 1];
     if (text == NULL)
     {
         LLError::LLUserWarningMsg::showOutOfMemory();
         LL_ERRS() << "Memory allocation failure." << LL_ENDL;
-        return FALSE;
+        return false;
     }
     instream.get(text, text_len + 1, '\0');
     text[text_len] = '\0';
     if( text_len != (S32)strlen(text) )/* Flawfinder: ignore */
     {
         LL_WARNS() << llformat("Invalid text length: %d != %d ",strlen(text),text_len) << LL_ENDL;/* Flawfinder: ignore */
-        success = FALSE;
+        success = false;
     }
 
     instream.getline(tbuf, MAX_STRING);
     if( success && (0 != sscanf(tbuf, "}")) )
     {
         LL_WARNS() << "Invalid Linden text file format: missing terminal }" << LL_ENDL;
-        success = FALSE;
+        success = false;
     }
 
     if( success )
@@ -2847,7 +2847,7 @@ BOOL LLTextEditor::importBuffer(const char* buffer, S32 length )
     return success;
 }
 
-BOOL LLTextEditor::exportBuffer(std::string &buffer )
+bool LLTextEditor::exportBuffer(std::string &buffer )
 {
     std::ostringstream outstream(buffer);
 
@@ -2858,7 +2858,7 @@ BOOL LLTextEditor::exportBuffer(std::string &buffer )
     outstream << getText();
     outstream << "}\n";
 
-    return TRUE;
+    return true;
 }
 
 void LLTextEditor::updateAllowingLanguageInput()
@@ -2871,17 +2871,17 @@ void LLTextEditor::updateAllowingLanguageInput()
     }
     if (hasFocus() && !mReadOnly)
     {
-        window->allowLanguageTextInput(this, TRUE);
+        window->allowLanguageTextInput(this, true);
     }
     else
     {
-        window->allowLanguageTextInput(this, FALSE);
+        window->allowLanguageTextInput(this, false);
     }
 }
 
 // Preedit is managed off the undo/redo command stack.
 
-BOOL LLTextEditor::hasPreeditString() const
+bool LLTextEditor::hasPreeditString() const
 {
     return (mPreeditPositions.size() > 1);
 }
@@ -2897,7 +2897,7 @@ void LLTextEditor::resetPreedit()
         }
         else
         {
-            deleteSelection(TRUE);
+            deleteSelection(true);
         }
     }
     if (hasPreeditString())
@@ -2949,7 +2949,7 @@ void LLTextEditor::updatePreedit(const LLWString &preedit_string,
     if (LL_KIM_OVERWRITE == gKeyboard->getInsertMode())
     {
         mPreeditOverwrittenWString = getWText().substr(insert_preedit_at, mPreeditWString.length());
-        removeStringNoUndo(insert_preedit_at, mPreeditWString.length());
+        removeStringNoUndo(insert_preedit_at, static_cast<S32>(mPreeditWString.length()));
     }
     else
     {
@@ -2970,7 +2970,7 @@ void LLTextEditor::updatePreedit(const LLWString &preedit_string,
     onKeyStroke();
 }
 
-BOOL LLTextEditor::getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect *bounds, LLRect *control) const
+bool LLTextEditor::getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect *bounds, LLRect *control) const
 {
     if (control)
     {
@@ -2993,13 +2993,13 @@ BOOL LLTextEditor::getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect
     const S32 query = (query_offset >= 0 ? preedit_left_position + query_offset : mCursorPos);
     if (query < preedit_left_position || query > preedit_right_position)
     {
-        return FALSE;
+        return false;
     }
 
     const S32 first_visible_line = getFirstVisibleLine();
     if (query < getLineStart(first_visible_line))
     {
-        return FALSE;
+        return false;
     }
 
     S32 current_line = first_visible_line;
@@ -3060,7 +3060,7 @@ BOOL LLTextEditor::getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect
         LLUI::getInstance()->screenRectToGL(preedit_rect_screen, bounds);
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLTextEditor::getSelectionRange(S32 *position, S32 *length) const
@@ -3106,7 +3106,7 @@ void LLTextEditor::markAsPreedit(S32 position, S32 length)
         mPreeditPositions[0] = position;
         mPreeditPositions[1] = position + length;
         mPreeditStandouts.resize(1);
-        mPreeditStandouts[0] = FALSE;
+        mPreeditStandouts[0] = false;
     }
     else
     {
@@ -3128,11 +3128,11 @@ S32 LLTextEditor::getPreeditFontSize() const
     return ll_round((F32)mFont->getLineHeight() * LLUI::getScaleFactor().mV[VY]);
 }
 
-BOOL LLTextEditor::isDirty() const
+bool LLTextEditor::isDirty() const
 {
     if(mReadOnly)
     {
-        return FALSE;
+        return false;
     }
 
     if( mPristineCmd )
diff --git a/indra/llui/lltexteditor.h b/indra/llui/lltexteditor.h
index a654425230..6ce08f48b5 100644
--- a/indra/llui/lltexteditor.h
+++ b/indra/llui/lltexteditor.h
@@ -88,7 +88,7 @@ public:
 
     void    setKeystrokeCallback(const keystroke_signal_t::slot_type& callback);
 
-    void    setParseHighlights(BOOL parsing) {mParseHighlights=parsing;}
+    void    setParseHighlights(bool parsing) {mParseHighlights=parsing;}
 
     static S32      spacesPerTab();
 
@@ -96,16 +96,16 @@ public:
     void    handleEmojiCommit(llwchar emoji);
 
     // mousehandler overrides
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleDoubleClick(S32 x, S32 y, MASK mask );
-    virtual BOOL    handleMiddleMouseDown(S32 x,S32 y,MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleDoubleClick(S32 x, S32 y, MASK mask );
+    virtual bool    handleMiddleMouseDown(S32 x,S32 y,MASK mask);
 
-    virtual BOOL    handleKeyHere(KEY key, MASK mask );
-    virtual BOOL    handleUnicodeCharHere(llwchar uni_char);
-    virtual BOOL    handleUnicodeStringHere(char *uni_str, bool editing);
+    virtual bool    handleKeyHere(KEY key, MASK mask );
+    virtual bool    handleUnicodeCharHere(llwchar uni_char);
+    virtual bool    handleUnicodeStringHere(char *uni_str, bool editing);
 
     virtual void    onMouseCaptureLost();
 
@@ -114,51 +114,51 @@ public:
     virtual void    onFocusReceived();
     virtual void    onFocusLost();
     virtual void    onCommit();
-    virtual void    setEnabled(BOOL enabled);
+    virtual void    setEnabled(bool enabled);
 
     // uictrl overrides
     virtual void    clear();
-    virtual void    setFocus( BOOL b );
-    virtual BOOL    isDirty() const;
+    virtual void    setFocus( bool b );
+    virtual bool    isDirty() const;
 
     // LLEditMenuHandler interface
     virtual void    undo();
-    virtual BOOL    canUndo() const;
+    virtual bool    canUndo() const;
     virtual void    redo();
-    virtual BOOL    canRedo() const;
+    virtual bool    canRedo() const;
 
     virtual void    cut();
-    virtual BOOL    canCut() const;
+    virtual bool    canCut() const;
     virtual void    copy();
-    virtual BOOL    canCopy() const;
+    virtual bool    canCopy() const;
     virtual void    paste();
-    virtual BOOL    canPaste() const;
+    virtual bool    canPaste() const;
 
     virtual void    updatePrimary();
     virtual void    copyPrimary();
     virtual void    pastePrimary();
-    virtual BOOL    canPastePrimary() const;
+    virtual bool    canPastePrimary() const;
 
     virtual void    doDelete();
-    virtual BOOL    canDoDelete() const;
+    virtual bool    canDoDelete() const;
     virtual void    selectAll();
-    virtual BOOL    canSelectAll()  const;
+    virtual bool    canSelectAll()  const;
 
     void            selectByCursorPosition(S32 prev_cursor_pos, S32 next_cursor_pos);
 
     virtual bool    canLoadOrSaveToFile();
 
-    void            selectNext(const std::string& search_text_in, BOOL case_insensitive, BOOL wrap = TRUE);
-    BOOL            replaceText(const std::string& search_text, const std::string& replace_text, BOOL case_insensitive, BOOL wrap = TRUE);
-    void            replaceTextAll(const std::string& search_text, const std::string& replace_text, BOOL case_insensitive);
+    void            selectNext(const std::string& search_text_in, bool case_insensitive, bool wrap = true);
+    bool            replaceText(const std::string& search_text, const std::string& replace_text, bool case_insensitive, bool wrap = true);
+    void            replaceTextAll(const std::string& search_text, const std::string& replace_text, bool case_insensitive);
 
     // Undo/redo stack
     void            blockUndo();
 
     // Text editing
     virtual void    makePristine();
-    BOOL            isPristine() const;
-    BOOL            allowsEmbeddedItems() const { return mAllowEmbeddedItems; }
+    bool            isPristine() const;
+    bool            allowsEmbeddedItems() const { return mAllowEmbeddedItems; }
 
     // Autoreplace (formerly part of LLLineEditor)
     typedef boost::function<void(S32&, S32&, LLWString&, S32&, const LLWString&)> autoreplace_callback_t;
@@ -184,19 +184,19 @@ public:
     // Does not change highlight or cursor position.
     void            removeTextFromEnd(S32 num_chars);
 
-    BOOL            tryToRevertToPristineState();
+    bool            tryToRevertToPristineState();
 
     void            setCursorAndScrollToEnd();
 
-    void            getCurrentLineAndColumn( S32* line, S32* col, BOOL include_wordwrap );
+    void            getCurrentLineAndColumn( S32* line, S32* col, bool include_wordwrap );
 
     // Hacky methods to make it into a word-wrapping, potentially scrolling,
     // read-only text box.
-    void            setCommitOnFocusLost(BOOL b)            { mCommitOnFocusLost = b; }
+    void            setCommitOnFocusLost(bool b)            { mCommitOnFocusLost = b; }
 
     // Hack to handle Notecards
-    virtual BOOL    importBuffer(const char* buffer, S32 length );
-    virtual BOOL    exportBuffer(std::string& buffer );
+    virtual bool    importBuffer(const char* buffer, S32 length );
+    virtual bool    exportBuffer(std::string& buffer );
 
     const LLUUID&   getSourceID() const                     { return mSourceID; }
 
@@ -211,7 +211,7 @@ public:
     void            setShowEmojiHelper(bool show);
     bool            getShowEmojiHelper() const { return mShowEmojiHelper; }
 
-    void            setPassDelete(BOOL b) { mPassDelete = b; }
+    void            setPassDelete(bool b) { mPassDelete = b; }
 
 protected:
     void            showContextMenu(S32 x, S32 y);
@@ -225,13 +225,13 @@ protected:
     S32             indentLine( S32 pos, S32 spaces );
     void            unindentLineBeforeCloseBrace();
 
-    virtual BOOL    handleSpecialKey(const KEY key, const MASK mask);
-    BOOL            handleNavigationKey(const KEY key, const MASK mask);
-    BOOL            handleSelectionKey(const KEY key, const MASK mask);
-    BOOL            handleControlKey(const KEY key, const MASK mask);
+    virtual bool    handleSpecialKey(const KEY key, const MASK mask);
+    bool            handleNavigationKey(const KEY key, const MASK mask);
+    bool            handleSelectionKey(const KEY key, const MASK mask);
+    bool            handleControlKey(const KEY key, const MASK mask);
 
-    BOOL            selectionContainsLineBreaks();
-    void            deleteSelection(BOOL transient_operation);
+    bool            selectionContainsLineBreaks();
+    void            deleteSelection(bool transient_operation);
 
     S32             prevWordPos(S32 cursorPos) const;
     S32             nextWordPos(S32 cursorPos) const;
@@ -252,7 +252,7 @@ protected:
     S32             addChar(S32 pos, llwchar wc);
     void            addString(char *s, bool editing);
     S32             addString(S32 pos, char *str);
-    void            addLineBreakChar(BOOL group_together = FALSE);
+    void            addLineBreakChar(bool group_together = false);
     S32             overwriteChar(S32 pos, llwchar wc);
     void            removeChar();
     S32             removeChar(S32 pos);
@@ -262,7 +262,7 @@ protected:
     void            tryToShowEmojiHelper();
     void            focusLostHelper();
     void            updateAllowingLanguageInput();
-    BOOL            hasPreeditString() const;
+    bool            hasPreeditString() const;
 
     // Overrides LLPreeditor
     virtual void    resetPreedit();
@@ -271,7 +271,7 @@ protected:
     virtual void    markAsPreedit(S32 position, S32 length);
     virtual void    getPreeditRange(S32 *position, S32 *length) const;
     virtual void    getSelectionRange(S32 *position, S32 *length) const;
-    virtual BOOL    getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect *bounds, LLRect *control) const;
+    virtual bool    getPreeditLocation(S32 query_offset, LLCoordGL *coord, LLRect *bounds, LLRect *control) const;
     virtual S32     getPreeditFontSize() const;
     virtual LLWString getPreeditString() const { return getWText(); }
     //
@@ -288,7 +288,7 @@ protected:
     LLWString           mPreeditWString;
     LLWString           mPreeditOverwrittenWString;
     std::vector<S32>    mPreeditPositions;
-    std::vector<BOOL>   mPreeditStandouts;
+    LLPreeditor::standouts_t mPreeditStandouts;
 
 protected:
     LLUIColor           mDefaultColor;
@@ -317,7 +317,7 @@ private:
     class TextCmdOverwriteChar;
     class TextCmdRemove;
 
-    BOOL            mBaseDocIsPristine;
+    bool            mBaseDocIsPristine;
     TextCmd*        mPristineCmd;
 
     TextCmd*        mLastCmd;
@@ -325,11 +325,11 @@ private:
     typedef std::deque<TextCmd*> undo_stack_t;
     undo_stack_t    mUndoStack;
 
-    BOOL            mTabsToNextField;       // if true, tab moves focus to next field, else inserts spaces
-    BOOL            mCommitOnFocusLost;
-    BOOL            mTakesFocus;
+    bool            mTabsToNextField;       // if true, tab moves focus to next field, else inserts spaces
+    bool            mCommitOnFocusLost;
+    bool            mTakesFocus;
 
-    BOOL            mAllowEmbeddedItems;
+    bool            mAllowEmbeddedItems;
     bool            mShowContextMenu;
     bool            mShowEmojiHelper;
     bool            mEnableTooltipPaste;
@@ -349,7 +349,7 @@ private:
 // Build time optimization, generate once in .cpp file
 #ifndef LLTEXTEDITOR_CPP
 extern template class LLTextEditor* LLView::getChild<class LLTextEditor>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 #endif
 
 #endif  // LL_TEXTEDITOR_H
diff --git a/indra/llui/lltextparser.cpp b/indra/llui/lltextparser.cpp
index 7bb7c7f7bb..097b168106 100644
--- a/indra/llui/lltextparser.cpp
+++ b/indra/llui/lltextparser.cpp
@@ -73,11 +73,11 @@ S32 LLTextParser::findPattern(const std::string &text, LLSD highlight)
             found = (! ltext.find(pattern) ? 0 : std::string::npos);
             break;
         case ENDS_WITH:
-            S32 pos = ltext.rfind(pattern);
-            if (pos >= 0 && (ltext.length()-pattern.length()==pos)) found = pos;
+            auto pos = ltext.rfind(pattern);
+            if (pos != std::string::npos && pos >= 0 && (ltext.length() - pattern.length() == pos)) found = pos;
             break;
     }
-    return found;
+    return static_cast<S32>(found);
 }
 
 LLSD LLTextParser::parsePartialLineHighlights(const std::string &text, const LLColor4 &color, EHighlightPosition part, S32 index)
@@ -99,8 +99,8 @@ LLSD LLTextParser::parsePartialLineHighlights(const std::string &text, const LLC
                 S32 start = findPattern(text,mHighlights[i]);
                 if (start >= 0 )
                 {
-                    S32 end =  std::string(mHighlights[i]["pattern"]).length();
-                    S32 len = text.length();
+                    auto end =  std::string(mHighlights[i]["pattern"]).length();
+                    auto len = text.length();
                     EHighlightPosition newpart;
                     if (start==0)
                     {
@@ -184,11 +184,11 @@ bool LLTextParser::parseFullLineHighlights(const std::string &text, LLColor4 *co
             {
                 LLSD color_llsd = mHighlights[i]["color"];
                 color->setValue(color_llsd);
-                return TRUE;
+                return true;
             }
         }
     }
-    return FALSE;   //No matches found.
+    return false;   //No matches found.
 }
 
 std::string LLTextParser::getFileName()
@@ -229,11 +229,11 @@ bool LLTextParser::saveToDisk(LLSD highlights)
     if (filename.empty())
     {
         LL_WARNS() << "LLTextParser::saveToDisk() no valid user directory." << LL_ENDL;
-        return FALSE;
+        return false;
     }
     llofstream file;
     file.open(filename.c_str());
     LLSDSerialize::toPrettyXML(mHighlights, file);
     file.close();
-    return TRUE;
+    return true;
 }
diff --git a/indra/llui/lltextvalidate.cpp b/indra/llui/lltextvalidate.cpp
index 9e27ed6232..9a087d8230 100644
--- a/indra/llui/lltextvalidate.cpp
+++ b/indra/llui/lltextvalidate.cpp
@@ -1,25 +1,25 @@
-/** 
+/**
  * @file lltextvalidate.cpp
  * @brief Text validation helper functions
  *
  * $LicenseInfo:firstyear=2001&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2010, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -73,7 +73,7 @@ class ValidatorFloat : public ValidatorImpl
 
         std::basic_string<CHAR> trimmed = str;
         LLStringUtilBase<CHAR>::trim(trimmed);
-        S32 len = trimmed.length();
+        auto len = trimmed.length();
         if (0 < len)
         {
             // May be a comma or period, depending on the locale
@@ -118,7 +118,7 @@ class ValidatorInt : public ValidatorImpl
 
         std::basic_string<CHAR> trimmed = str;
         LLStringUtilBase<CHAR>::trim(trimmed);
-        S32 len = trimmed.length();
+        auto len = trimmed.length();
         if (0 < len)
         {
             S32 i = 0;
@@ -157,7 +157,7 @@ class ValidatorPositiveS32 : public ValidatorImpl
 
         std::basic_string<CHAR> trimmed = str;
         LLStringUtilBase<CHAR>::trim(trimmed);
-        S32 len = trimmed.length();
+        auto len = trimmed.length();
         if (0 < len)
         {
             CHAR ch = trimmed.front();
@@ -167,7 +167,7 @@ class ValidatorPositiveS32 : public ValidatorImpl
                 return setError("Validator_ShouldNotBeMinusOrZero", LLSD().with("CH", llsd(ch)));
             }
 
-            for (S32 i = 0; i < len; ++i)
+            for (size_t i = 0; i < len; ++i)
             {
                 ch = trimmed[i];
                 if (!LLStringOps::isDigit(ch))
@@ -177,7 +177,7 @@ class ValidatorPositiveS32 : public ValidatorImpl
             }
         }
 
-        S32 val = strtol(trimmed);
+        auto val = strtol(trimmed);
         if (val <= 0)
         {
             return setError("Validator_InvalidNumericString", LLSD().with("STR", llsd(trimmed)));
@@ -201,7 +201,7 @@ class ValidatorNonNegativeS32 : public ValidatorImpl
 
         std::basic_string<CHAR> trimmed = str;
         LLStringUtilBase<CHAR>::trim(trimmed);
-        S32 len = trimmed.length();
+        auto len = trimmed.length();
         if (0 < len)
         {
             CHAR ch = trimmed.front();
@@ -211,7 +211,7 @@ class ValidatorNonNegativeS32 : public ValidatorImpl
                 return setError("Validator_ShouldNotBeMinus", LLSD().with("CH", llsd(ch)));
             }
 
-            for (S32 i = 0; i < len; ++i)
+            for (size_t i = 0; i < len; ++i)
             {
                 ch = trimmed[i];
                 if (!LLStringOps::isDigit(ch))
@@ -221,7 +221,7 @@ class ValidatorNonNegativeS32 : public ValidatorImpl
             }
         }
 
-        S32 val = strtol(trimmed);
+        auto val = strtol(trimmed);
         if (val < 0)
         {
             return setError("Validator_InvalidNumericString", LLSD().with("STR", llsd(trimmed)));
@@ -244,7 +244,7 @@ class ValidatorNonNegativeS32NoSpace : public ValidatorImpl
         LLLocale locale(LLLocale::USER_LOCALE);
 
         std::basic_string<CHAR> test_str = str;
-        S32 len = test_str.length();
+        auto len = test_str.length();
         if (0 < len)
         {
             CHAR ch = test_str.front();
@@ -254,7 +254,7 @@ class ValidatorNonNegativeS32NoSpace : public ValidatorImpl
                 return setError("Validator_ShouldNotBeMinus", LLSD().with("CH", llsd(ch)));
             }
 
-            for (S32 i = 0; i < len; ++i)
+            for (size_t i = 0; i < len; ++i)
             {
                 ch = test_str[i];
                 if (!LLStringOps::isDigit(ch) || LLStringOps::isSpace(ch))
@@ -264,7 +264,7 @@ class ValidatorNonNegativeS32NoSpace : public ValidatorImpl
             }
         }
 
-        S32 val = strtol(test_str);
+        auto val = strtol(test_str);
         if (val < 0)
         {
             return setError("Validator_InvalidNumericString", LLSD().with("STR", llsd(test_str)));
@@ -286,7 +286,7 @@ class ValidatorAlphaNum : public ValidatorImpl
     {
         LLLocale locale(LLLocale::USER_LOCALE);
 
-        S32 len = str.length();
+        auto len = str.length();
         while (len--)
         {
             CHAR ch = str[len];
@@ -313,7 +313,7 @@ class ValidatorAlphaNumSpace : public ValidatorImpl
     {
         LLLocale locale(LLLocale::USER_LOCALE);
 
-        S32 len = str.length();
+        auto len = str.length();
         while (len--)
         {
             CHAR ch = str[len];
@@ -341,7 +341,7 @@ class ValidatorASCIIPrintableNoPipe : public ValidatorImpl
     template <class CHAR>
     bool validate(const std::basic_string<CHAR>& str)
     {
-        S32 len = str.length();
+        auto len = str.length();
         while (len--)
         {
             CHAR ch = str[len];
@@ -368,7 +368,7 @@ class ValidatorASCIIPrintableNoSpace : public ValidatorImpl
     template <class CHAR>
     bool validate(const std::basic_string<CHAR>& str)
     {
-        S32 len = str.length();
+        auto len = str.length();
         while (len--)
         {
             CHAR ch = str[len];
@@ -395,7 +395,7 @@ protected:
     template <class CHAR>
     bool validate(const std::basic_string<CHAR>& str)
     {
-        S32 len = str.length();
+        auto len = str.length();
         while (len--)
         {
             CHAR ch = str[len];
@@ -441,7 +441,7 @@ class ValidatorASCIIWithNewLine : public ValidatorImpl
     template <class CHAR>
     bool validate(const std::basic_string<CHAR>& str)
     {
-        S32 len = str.length();
+        auto len = str.length();
         while (len--)
         {
             CHAR ch = str[len];
diff --git a/indra/llui/lltextvalidate.h b/indra/llui/lltextvalidate.h
index 2c2941de7f..a4ff144d82 100644
--- a/indra/llui/lltextvalidate.h
+++ b/indra/llui/lltextvalidate.h
@@ -1,4 +1,4 @@
-/** 
+/**
  * @file lltextbase.h
  * @author Martin Reddy
  * @brief The base class of text box/editor, providing Url handling support
@@ -6,21 +6,21 @@
  * $LicenseInfo:firstyear=2009&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2010, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
diff --git a/indra/llui/lltimectrl.cpp b/indra/llui/lltimectrl.cpp
index 3d404293c6..e2e735b131 100644
--- a/indra/llui/lltimectrl.cpp
+++ b/indra/llui/lltimectrl.cpp
@@ -161,7 +161,7 @@ LLTimeCtrl::LLTimeCtrl(const LLTimeCtrl::Params& p)
     mDownBtn = LLUICtrlFactory::create<LLButton>(down_button_params);
     addChild(mDownBtn);
 
-    setUseBoundingRect( TRUE );
+    setUseBoundingRect( true );
 }
 
 F32 LLTimeCtrl::getTime24() const
@@ -188,27 +188,27 @@ void LLTimeCtrl::setTime24(F32 time)
     updateText();
 }
 
-BOOL LLTimeCtrl::handleKeyHere(KEY key, MASK mask)
+bool LLTimeCtrl::handleKeyHere(KEY key, MASK mask)
 {
     if (mEditor->hasFocus())
     {
         if(key == KEY_UP)
         {
             onUpBtn();
-            return TRUE;
+            return true;
         }
         if(key == KEY_DOWN)
         {
             onDownBtn();
-            return TRUE;
+            return true;
         }
         if (key == KEY_RETURN)
         {
             onCommit();
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 void LLTimeCtrl::onUpBtn()
@@ -343,7 +343,7 @@ LLTimeCtrl::EEditingPart LLTimeCtrl::getEditingPart()
     S32 cur_pos = mEditor->getCursor();
     std::string time_str = mEditor->getText();
 
-    S32 colon_index = time_str.find_first_of(':');
+    auto colon_index = time_str.find_first_of(':');
 
     if (cur_pos <= colon_index)
     {
@@ -376,7 +376,7 @@ std::string LLTimeCtrl::getMinutesString(const std::string& str)
     size_t colon_index = str.find_first_of(':');
     ++colon_index;
 
-    int minutes_len = str.length() - colon_index - AMPM_LEN;
+    auto minutes_len = str.length() - colon_index - AMPM_LEN;
     std::string minutes_str = str.substr(colon_index, minutes_len);
 
     return minutes_str;
@@ -411,7 +411,7 @@ bool LLTimeCtrl::isMinutesStringValid(const std::string& str)
 // static
 bool LLTimeCtrl::isPMAMStringValid(const std::string& str)
 {
-    S32 len = str.length();
+    auto len = str.length();
 
     bool valid = (str[--len] == 'M') && (str[--len] == 'P' || str[len] == 'A');
 
diff --git a/indra/llui/lltimectrl.h b/indra/llui/lltimectrl.h
index a2c016ab6f..6973c9a02b 100644
--- a/indra/llui/lltimectrl.h
+++ b/indra/llui/lltimectrl.h
@@ -93,7 +93,7 @@ private:
     };
 
     virtual void    onFocusLost();
-    virtual BOOL    handleKeyHere(KEY key, MASK mask);
+    virtual bool    handleKeyHere(KEY key, MASK mask);
 
     void    onUpBtn();
     void    onDownBtn();
@@ -124,6 +124,6 @@ private:
     U32             mTime;              // minutes since midnight: 0 - 1439
     U32             mSnapToMin;         // interval in minutes to snap to
 
-    BOOL            mAllowEdit;
+    bool            mAllowEdit;
 };
 #endif /* LLTIMECTRL_H_ */
diff --git a/indra/llui/lltoggleablemenu.cpp b/indra/llui/lltoggleablemenu.cpp
index 636df7a87e..cfa520f693 100644
--- a/indra/llui/lltoggleablemenu.cpp
+++ b/indra/llui/lltoggleablemenu.cpp
@@ -52,7 +52,7 @@ boost::signals2::connection LLToggleableMenu::setVisibilityChangeCallback(const
 }
 
 // virtual
-void LLToggleableMenu::onVisibilityChange (BOOL curVisibilityIn)
+void LLToggleableMenu::onVisibilityChange (bool curVisibilityIn)
 {
     S32 x,y;
     LLUI::getInstance()->getMousePositionLocal(LLUI::getInstance()->getRootView(), &x, &y);
@@ -94,7 +94,7 @@ bool LLToggleableMenu::toggleVisibility()
 
     if (getVisible())
     {
-        setVisible(FALSE);
+        setVisible(false);
         mClosedByButtonClick = false;
         return false;
     }
diff --git a/indra/llui/lltoggleablemenu.h b/indra/llui/lltoggleablemenu.h
index 1cf37ad647..7cbbd417a4 100644
--- a/indra/llui/lltoggleablemenu.h
+++ b/indra/llui/lltoggleablemenu.h
@@ -45,7 +45,7 @@ public:
 
     boost::signals2::connection setVisibilityChangeCallback( const commit_signal_t::slot_type& cb );
 
-    virtual void onVisibilityChange (BOOL curVisibilityIn);
+    virtual void onVisibilityChange (bool curVisibilityIn);
 
     virtual bool addChild (LLView* view, S32 tab_group = 0);
 
diff --git a/indra/llui/lltoolbar.cpp b/indra/llui/lltoolbar.cpp
index 8a6cb683d2..aa48ae048f 100644
--- a/indra/llui/lltoolbar.cpp
+++ b/indra/llui/lltoolbar.cpp
@@ -398,18 +398,18 @@ bool LLToolBar::flashCommand(const LLCommandId& commandId, bool flash, bool forc
         if (it != mButtonMap.end())
         {
             command_button = it->second;
-            command_button->setFlashing((BOOL)(flash),(BOOL)(force_flashing));
+            command_button->setFlashing((bool)(flash),(bool)(force_flashing));
         }
     }
 
     return (command_button != NULL);
 }
 
-BOOL LLToolBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     LLRect button_panel_rect;
     mButtonPanel->localRectToOtherView(mButtonPanel->getLocalRect(), &button_panel_rect, this);
-    BOOL handle_it_here = !mReadOnly && button_panel_rect.pointInRect(x, y);
+    bool handle_it_here = !mReadOnly && button_panel_rect.pointInRect(x, y);
 
     if (handle_it_here)
     {
@@ -443,9 +443,9 @@ BOOL LLToolBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
     return handle_it_here;
 }
 
-BOOL LLToolBar::isSettingChecked(const LLSD& userdata)
+bool LLToolBar::isSettingChecked(const LLSD& userdata)
 {
-    BOOL retval = FALSE;
+    bool retval = false;
 
     const std::string setting_name = userdata.asString();
 
@@ -784,8 +784,8 @@ void LLToolBar::updateLayoutAsNeeded()
 
     if (!mButtons.empty())
     {
-        mButtonPanel->setVisible(TRUE);
-        mButtonPanel->setMouseOpaque(TRUE);
+        mButtonPanel->setVisible(true);
+        mButtonPanel->setMouseOpaque(true);
     }
 
     // don't clear flag until after we've resized ourselves, to avoid laying out every frame
@@ -797,13 +797,13 @@ void LLToolBar::draw()
 {
     if (mButtons.empty())
     {
-        mButtonPanel->setVisible(FALSE);
-        mButtonPanel->setMouseOpaque(FALSE);
+        mButtonPanel->setVisible(false);
+        mButtonPanel->setMouseOpaque(false);
     }
     else
     {
-        mButtonPanel->setVisible(TRUE);
-        mButtonPanel->setMouseOpaque(TRUE);
+        mButtonPanel->setVisible(true);
+        mButtonPanel->setMouseOpaque(true);
     }
 
     // Update enable/disable state and highlight state for editable toolbars
@@ -841,7 +841,7 @@ void LLToolBar::draw()
     }
 
     LLIconCtrl* caret = mCaretIcon;
-    caret->setVisible(FALSE);
+    caret->setVisible(false);
     if (mDragAndDropTarget && !mButtonCommands.empty())
     {
         LLRect caret_rect = caret->getRect();
@@ -859,15 +859,15 @@ void LLToolBar::draw()
                                   mDragx+mDragGirth,
                                   mDragy-caret_rect.getHeight()/2));
         }
-        caret->setVisible(TRUE);
+        caret->setVisible(true);
     }
 
     LLUICtrl::draw();
-    caret->setVisible(FALSE);
+    caret->setVisible(false);
     mDragAndDropTarget = false;
 }
 
-void LLToolBar::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLToolBar::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLUICtrl::reshape(width, height, called_from_parent);
     mNeedsLayout = true;
@@ -1042,23 +1042,23 @@ boost::signals2::connection LLToolBar::setButtonRemoveCallback(const button_sign
     return connectSignal(mButtonRemoveSignal, cb);
 }
 
-BOOL LLToolBar::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLToolBar::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                         EDragAndDropType cargo_type,
                                         void* cargo_data,
                                         EAcceptance* accept,
                                         std::string& tooltip_msg)
 {
     // If we have a drop callback, that means that we can handle the drop
-    BOOL handled = (mHandleDropCallback ? TRUE : FALSE);
+    bool handled = mHandleDropCallback != nullptr;
 
     // if drop is set, it's time to call the callback to get the operation done
     if (handled && drop)
     {
-        handled = mHandleDropCallback(cargo_data, x, y ,this);
+        handled = mHandleDropCallback(cargo_data, x, y, this);
     }
 
     // We accept only single tool drop on toolbars
-    *accept = (handled ? ACCEPT_YES_SINGLE : ACCEPT_NO);
+    *accept = handled ? ACCEPT_YES_SINGLE : ACCEPT_NO;
 
     // We'll use that flag to change the visual aspect of the toolbar target on draw()
     mDragAndDropTarget = false;
@@ -1073,7 +1073,7 @@ BOOL LLToolBar::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
             int orig_rank = getRankFromPosition(dragged_command);
             mDragRank = getRankFromPosition(x, y);
             // Don't DaD if we're dragging a command on itself
-            mDragAndDropTarget = ((orig_rank != RANK_NONE) && ((mDragRank == orig_rank) || ((mDragRank-1) == orig_rank)) ? false : true);
+            mDragAndDropTarget = ((orig_rank != RANK_NONE) && ((mDragRank == orig_rank) || ((mDragRank - 1) == orig_rank)));
             //LL_INFOS() << "Merov debug : DaD, rank = " << mDragRank << ", dragged uui = " << inv_item->getUUID() << LL_ENDL;
             /* Do the following if you want to animate the button itself
             LLCommandId dragged_command(inv_item->getUUID());
@@ -1083,7 +1083,7 @@ BOOL LLToolBar::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
         }
         else
         {
-            handled = FALSE;
+            handled = false;
         }
     }
 
@@ -1121,16 +1121,16 @@ LLToolBarButton::~LLToolBarButton()
     delete mIsStartingSignal;
 }
 
-BOOL LLToolBarButton::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolBarButton::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     mMouseDownX = x;
     mMouseDownY = y;
     return LLButton::handleMouseDown(x, y, mask);
 }
 
-BOOL LLToolBarButton::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolBarButton::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     S32 mouse_distance_squared = (x - mMouseDownX) * (x - mMouseDownX) + (y - mMouseDownY) * (y - mMouseDownY);
     if (mouse_distance_squared > DRAG_N_DROP_DISTANCE_THRESHOLD * DRAG_N_DROP_DISTANCE_THRESHOLD
@@ -1141,7 +1141,7 @@ BOOL LLToolBarButton::handleHover(S32 x, S32 y, MASK mask)
         {
             mStartDragItemCallback(x, y, this);
             mIsDragged = true;
-            handled = TRUE;
+            handled = true;
         }
         else
         {
@@ -1163,7 +1163,7 @@ void LLToolBarButton::onMouseEnter(S32 x, S32 y, MASK mask)
     // Always highlight toolbar buttons, even if they are disabled
     if (!gFocusMgr.getMouseCapture() || gFocusMgr.getMouseCapture() == this)
     {
-        mNeedsHighlight = TRUE;
+        mNeedsHighlight = true;
     }
 
     LLToolBar* parent_toolbar = getParentByType<LLToolBar>();
@@ -1199,12 +1199,12 @@ void LLToolBarButton::onCommit()
     }
 }
 
-void LLToolBarButton::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLToolBarButton::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLButton::reshape(mWidthRange.clamp(width), height, called_from_parent);
 }
 
-void LLToolBarButton::setEnabled(BOOL enabled)
+void LLToolBarButton::setEnabled(bool enabled)
 {
     if (enabled)
     {
diff --git a/indra/llui/lltoolbar.h b/indra/llui/lltoolbar.h
index 1a9c1cdf9f..c57c979525 100644
--- a/indra/llui/lltoolbar.h
+++ b/indra/llui/lltoolbar.h
@@ -40,8 +40,8 @@ class LLToolBarButton;
 class LLIconCtrl;
 
 typedef boost::function<void (S32 x, S32 y, LLToolBarButton* button)> tool_startdrag_callback_t;
-typedef boost::function<BOOL (S32 x, S32 y, const LLUUID& uuid, LLAssetType::EType type)> tool_handledrag_callback_t;
-typedef boost::function<BOOL (void* data, S32 x, S32 y, LLToolBar* toolbar)> tool_handledrop_callback_t;
+typedef boost::function<bool (S32 x, S32 y, const LLUUID& uuid, LLAssetType::EType type)> tool_handledrag_callback_t;
+typedef boost::function<bool (void* data, S32 x, S32 y, LLToolBar* toolbar)> tool_handledrop_callback_t;
 
 class LLToolBarButton : public LLButton
 {
@@ -62,11 +62,11 @@ public:
     LLToolBarButton(const Params& p);
     ~LLToolBarButton();
 
-    BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    BOOL handleHover(S32 x, S32 y, MASK mask);
+    bool handleMouseDown(S32 x, S32 y, MASK mask);
+    bool handleHover(S32 x, S32 y, MASK mask);
 
-    void reshape(S32 width, S32 height, BOOL called_from_parent = true);
-    void setEnabled(BOOL enabled);
+    void reshape(S32 width, S32 height, bool called_from_parent = true);
+    void setEnabled(bool enabled);
     void setCommandId(const LLCommandId& id) { mId = id; }
     LLCommandId getCommandId() { return mId; }
 
@@ -178,12 +178,12 @@ public:
 
     protected:
         friend class LLUICtrlFactory;
-        LLCenterLayoutPanel(const Params& params) : LLLayoutPanel(params), mButtonPanel(NULL) {}
+        LLCenterLayoutPanel(const Params& params) : LLLayoutPanel(params) {};
 
     private:
         reshape_callback_t                  mReshapeCallback;
-        LLToolBarEnums::EToolBarLocation    mLocationId;
-        LLPanel *                           mButtonPanel;
+        LLToolBarEnums::EToolBarLocation    mLocationId{ LLToolBarEnums::EToolBarLocation::TOOLBAR_NONE };
+        LLPanel *                           mButtonPanel{ nullptr };
     };
 
     struct Params : public LLInitParam::Block<Params, LLUICtrl::Params>
@@ -214,9 +214,9 @@ public:
 
     // virtuals
     void draw();
-    void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
-    BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    void reshape(S32 width, S32 height, bool called_from_parent = true);
+    bool handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                    EDragAndDropType cargo_type,
                                    void* cargo_data,
                                    EAcceptance* accept,
@@ -270,7 +270,7 @@ private:
     void updateLayoutAsNeeded();
     void createButtons();
     void resizeButtonsInRow(std::vector<LLToolBarButton*>& buttons_in_row, S32 max_row_girth);
-    BOOL isSettingChecked(const LLSD& userdata);
+    bool isSettingChecked(const LLSD& userdata);
     void onSettingEnable(const LLSD& userdata);
     void onRemoveSelectedCommand();
 
diff --git a/indra/llui/lltooltip.cpp b/indra/llui/lltooltip.cpp
index c10b8b4830..86525c2f7e 100644
--- a/indra/llui/lltooltip.cpp
+++ b/indra/llui/lltooltip.cpp
@@ -71,7 +71,7 @@ void LLToolTipView::draw()
     LLView::draw();
 }
 
-BOOL LLToolTipView::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolTipView::handleHover(S32 x, S32 y, MASK mask)
 {
     static S32 last_x = x;
     static S32 last_y = y;
@@ -89,7 +89,7 @@ BOOL LLToolTipView::handleHover(S32 x, S32 y, MASK mask)
     return LLView::handleHover(x, y, mask);
 }
 
-BOOL LLToolTipView::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolTipView::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     LLToolTipMgr::instance().blockToolTips();
 
@@ -98,29 +98,29 @@ BOOL LLToolTipView::handleMouseDown(S32 x, S32 y, MASK mask)
         // If we are handling the mouse event menu holder
         // won't get a chance to close menus so do this here
         LLMenuGL::sMenuContainer->hideMenus();
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLToolTipView::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolTipView::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
 {
     LLToolTipMgr::instance().blockToolTips();
     return LLView::handleMiddleMouseDown(x, y, mask);
 }
 
-BOOL LLToolTipView::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolTipView::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     LLToolTipMgr::instance().blockToolTips();
     return LLView::handleRightMouseDown(x, y, mask);
 }
 
 
-BOOL LLToolTipView::handleScrollWheel( S32 x, S32 y, S32 clicks )
+bool LLToolTipView::handleScrollWheel( S32 x, S32 y, S32 clicks )
 {
     LLToolTipMgr::instance().blockToolTips();
-    return FALSE;
+    return false;
 }
 
 void LLToolTipView::drawStickyRect()
@@ -325,14 +325,14 @@ void LLToolTip::snapToChildren()
     setShape(tooltip_rect);
 }
 
-void LLToolTip::setVisible(BOOL visible)
+void LLToolTip::setVisible(bool visible)
 {
     // fade out tooltip over time
     if (visible)
     {
         mVisibleTimer.start();
         mFadeTimer.stop();
-        LLPanel::setVisible(TRUE);
+        LLPanel::setVisible(true);
     }
     else
     {
@@ -345,7 +345,7 @@ void LLToolTip::setVisible(BOOL visible)
     }
 }
 
-BOOL LLToolTip::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolTip::handleHover(S32 x, S32 y, MASK mask)
 {
     //mInfoButton->setFlashing(true);
     if(mInfoButton)
@@ -356,7 +356,7 @@ BOOL LLToolTip::handleHover(S32 x, S32 y, MASK mask)
     {
         getWindow()->setCursor(UI_CURSOR_HAND);
     }
-    return TRUE;
+    return true;
 }
 
 void LLToolTip::onMouseLeave(S32 x, S32 y, MASK mask)
@@ -549,7 +549,7 @@ void LLToolTipMgr::hideToolTips()
 {
     if (mToolTip)
     {
-        mToolTip->setVisible(FALSE);
+        mToolTip->setVisible(false);
     }
 }
 
diff --git a/indra/llui/lltooltip.h b/indra/llui/lltooltip.h
index 9ae537e0c1..8515504e3b 100644
--- a/indra/llui/lltooltip.h
+++ b/indra/llui/lltooltip.h
@@ -44,11 +44,11 @@ public:
         Params();
     };
     LLToolTipView(const LLToolTipView::Params&);
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMiddleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleScrollWheel( S32 x, S32 y, S32 clicks );
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMiddleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleScrollWheel( S32 x, S32 y, S32 clicks );
 
     void drawStickyRect();
 
@@ -99,9 +99,9 @@ public:
         Params();
     };
     /*virtual*/ void draw();
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
     /*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask);
-    /*virtual*/ void setVisible(BOOL visible);
+    /*virtual*/ void setVisible(bool visible);
 
     bool isFading();
     F32 getVisibleTime();
diff --git a/indra/llui/lltransutil.cpp b/indra/llui/lltransutil.cpp
index 3d3a7ddf4e..4af5376a8b 100644
--- a/indra/llui/lltransutil.cpp
+++ b/indra/llui/lltransutil.cpp
@@ -61,7 +61,7 @@ bool LLTransUtil::parseStrings(const std::string& xml_filename, const std::set<s
 bool LLTransUtil::parseLanguageStrings(const std::string& xml_filename)
 {
     LLXMLNodePtr root;
-    BOOL success  = LLUICtrlFactory::getLayeredXMLNode(xml_filename, root);
+    bool success  = LLUICtrlFactory::getLayeredXMLNode(xml_filename, root);
 
     if (!success)
     {
diff --git a/indra/llui/llui.cpp b/indra/llui/llui.cpp
index c3dd2eb17a..ba8fe84377 100644
--- a/indra/llui/llui.cpp
+++ b/indra/llui/llui.cpp
@@ -172,7 +172,7 @@ mHelpImpl(NULL)
     // Callbacks for associating controls with floater visibility:
     reg.add("Floater.Toggle", boost::bind(&LLFloaterReg::toggleInstance, _2, LLSD()));
     reg.add("Floater.ToggleOrBringToFront", boost::bind(&LLFloaterReg::toggleInstanceOrBringToFront, _2, LLSD()));
-    reg.add("Floater.Show", boost::bind(&LLFloaterReg::showInstance, _2, LLSD(), FALSE));
+    reg.add("Floater.Show", boost::bind(&LLFloaterReg::showInstance, _2, LLSD(), false));
     reg.add("Floater.ShowOrBringToFront", boost::bind(&LLFloaterReg::showInstanceOrBringToFront, _2, LLSD()));
     reg.add("Floater.Hide", boost::bind(&LLFloaterReg::hideInstance, _2, LLSD()));
 
diff --git a/indra/llui/llui.h b/indra/llui/llui.h
index 471602515d..373a358544 100644
--- a/indra/llui/llui.h
+++ b/indra/llui/llui.h
@@ -77,7 +77,10 @@ enum EDragAndDropType
     DAD_PERSON          = 17,
     DAD_SETTINGS        = 18,
     DAD_MATERIAL        = 19,
-    DAD_COUNT           = 20,   // number of types in this enum
+    DAD_GLTF            = 20,
+    DAD_GLTF_BIN        = 21,
+
+    DAD_COUNT           = 22,   // number of types in this enum
 };
 
 // Reasons for drags to be denied.
@@ -234,7 +237,7 @@ public:
 
 
     private:
-        S32 mValue;
+        S32 mValue{ 0 };
     };
 
     //
diff --git a/indra/llui/lluictrl.cpp b/indra/llui/lluictrl.cpp
index 69093393d9..52c5f72a45 100644
--- a/indra/llui/lluictrl.cpp
+++ b/indra/llui/lluictrl.cpp
@@ -44,7 +44,7 @@ F32 LLUICtrl::sInactiveControlTransparency = 1.0f;
 
 // Compiler optimization, generate extern template
 template class LLUICtrl* LLView::getChild<class LLUICtrl>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 
 LLUICtrl::CallbackParam::CallbackParam()
 :   name("name"),
@@ -100,10 +100,10 @@ const LLUICtrl::Params& LLUICtrl::getDefaultParams()
 
 LLUICtrl::LLUICtrl(const LLUICtrl::Params& p, const LLViewModelPtr& viewmodel)
 :   LLView(p),
-    mIsChrome(FALSE),
+    mIsChrome(false),
     mRequestsFront(p.requests_front),
-    mTabStop(FALSE),
-    mTentative(FALSE),
+    mTabStop(false),
+    mTentative(false),
     mViewModel(viewmodel),
     mControlVariable(NULL),
     mEnabledControlVariable(NULL),
@@ -342,12 +342,12 @@ void LLUICtrl::onMouseLeave(S32 x, S32 y, MASK mask)
 }
 
 //virtual
-BOOL LLUICtrl::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLUICtrl::handleMouseDown(S32 x, S32 y, MASK mask)
 {
 
     LL_DEBUGS() << "LLUICtrl::handleMouseDown calling   LLView)'s handleMouseUp (first initialized xui to: " << getPathname() << " )" << LL_ENDL;
 
-    BOOL handled  = LLView::handleMouseDown(x,y,mask);
+    bool handled  = LLView::handleMouseDown(x,y,mask);
 
     if (mMouseDownSignal)
     {
@@ -362,12 +362,12 @@ BOOL LLUICtrl::handleMouseDown(S32 x, S32 y, MASK mask)
 }
 
 //virtual
-BOOL LLUICtrl::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLUICtrl::handleMouseUp(S32 x, S32 y, MASK mask)
 {
 
     LL_DEBUGS() << "LLUICtrl::handleMouseUp calling LLView)'s handleMouseUp (first initialized xui to: " << getPathname() << " )" << LL_ENDL;
 
-    BOOL handled  = LLView::handleMouseUp(x,y,mask);
+    bool handled  = LLView::handleMouseUp(x,y,mask);
     if (handled) {
         LLViewerEventRecorder::instance().updateMouseEventInfo(x,y,-56,-56,getPathname());
     }
@@ -382,9 +382,9 @@ BOOL LLUICtrl::handleMouseUp(S32 x, S32 y, MASK mask)
 }
 
 //virtual
-BOOL LLUICtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLUICtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled  = LLView::handleRightMouseDown(x,y,mask);
+    bool handled  = LLView::handleRightMouseDown(x,y,mask);
     if (mRightMouseDownSignal)
     {
         (*mRightMouseDownSignal)(this,x,y,mask);
@@ -393,9 +393,9 @@ BOOL LLUICtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
 }
 
 //virtual
-BOOL LLUICtrl::handleRightMouseUp(S32 x, S32 y, MASK mask)
+bool LLUICtrl::handleRightMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled  = LLView::handleRightMouseUp(x,y,mask);
+    bool handled  = LLView::handleRightMouseUp(x,y,mask);
     if(mRightMouseUpSignal)
     {
         (*mRightMouseUpSignal)(this,x,y,mask);
@@ -403,9 +403,9 @@ BOOL LLUICtrl::handleRightMouseUp(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLUICtrl::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLUICtrl::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLView::handleDoubleClick(x, y, mask);
+    bool handled = LLView::handleDoubleClick(x, y, mask);
     if (mDoubleClickSignal)
     {
         (*mDoubleClickSignal)(this, x, y, mask);
@@ -414,7 +414,7 @@ BOOL LLUICtrl::handleDoubleClick(S32 x, S32 y, MASK mask)
 }
 
 // can't tab to children of a non-tab-stop widget
-BOOL LLUICtrl::canFocusChildren() const
+bool LLUICtrl::canFocusChildren() const
 {
     return hasTabStop();
 }
@@ -439,9 +439,9 @@ void LLUICtrl::onCommit()
 }
 
 //virtual
-BOOL LLUICtrl::isCtrl() const
+bool LLUICtrl::isCtrl() const
 {
-    return TRUE;
+    return true;
 }
 
 //virtual
@@ -473,7 +473,7 @@ LLViewModel* LLUICtrl::getViewModel() const
 }
 
 //virtual
-BOOL LLUICtrl::postBuild()
+bool LLUICtrl::postBuild()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
     //
@@ -662,15 +662,15 @@ bool LLUICtrl::controlListener(const LLSD& newvalue, LLHandle<LLUICtrl> handle,
 }
 
 // virtual
-BOOL LLUICtrl::setTextArg( const std::string& key, const LLStringExplicit& text )
+bool LLUICtrl::setTextArg( const std::string& key, const LLStringExplicit& text )
 {
-    return FALSE;
+    return false;
 }
 
 // virtual
-BOOL LLUICtrl::setLabelArg( const std::string& key, const LLStringExplicit& text )
+bool LLUICtrl::setLabelArg( const std::string& key, const LLStringExplicit& text )
 {
-    return FALSE;
+    return false;
 }
 
 // virtual
@@ -691,12 +691,12 @@ LLCtrlScrollInterface* LLUICtrl::getScrollInterface()
     return NULL;
 }
 
-BOOL LLUICtrl::hasFocus() const
+bool LLUICtrl::hasFocus() const
 {
     return (gFocusMgr.childHasKeyboardFocus(this));
 }
 
-void LLUICtrl::setFocus(BOOL b)
+void LLUICtrl::setFocus(bool b)
 {
     // focus NEVER goes to ui ctrls that are disabled!
     if (!getEnabled())
@@ -720,25 +720,25 @@ void LLUICtrl::setFocus(BOOL b)
 }
 
 // virtual
-void LLUICtrl::setTabStop( BOOL b )
+void LLUICtrl::setTabStop( bool b )
 {
     mTabStop = b;
 }
 
 // virtual
-BOOL LLUICtrl::hasTabStop() const
+bool LLUICtrl::hasTabStop() const
 {
     return mTabStop;
 }
 
 // virtual
-BOOL LLUICtrl::acceptsTextInput() const
+bool LLUICtrl::acceptsTextInput() const
 {
-    return FALSE;
+    return false;
 }
 
 //virtual
-BOOL LLUICtrl::isDirty() const
+bool LLUICtrl::isDirty() const
 {
     return mViewModel->isDirty();
 };
@@ -761,16 +761,16 @@ void LLUICtrl::clear()
 }
 
 // virtual
-void LLUICtrl::setIsChrome(BOOL is_chrome)
+void LLUICtrl::setIsChrome(bool is_chrome)
 {
     mIsChrome = is_chrome;
 }
 
 // virtual
-BOOL LLUICtrl::getIsChrome() const
+bool LLUICtrl::getIsChrome() const
 {
     if (mIsChrome)
-        return TRUE;
+        return true;
 
     LLView* parent_ctrl = getParent();
     while (parent_ctrl)
@@ -781,11 +781,11 @@ BOOL LLUICtrl::getIsChrome() const
         parent_ctrl = parent_ctrl->getParent();
     }
 
-    return FALSE;
+    return false;
 }
 
 
-BOOL LLUICtrl::focusFirstItem(BOOL prefer_text_fields, BOOL focus_flash)
+bool LLUICtrl::focusFirstItem(bool prefer_text_fields, bool focus_flash)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
     // try to select default tab group child
@@ -796,14 +796,14 @@ BOOL LLUICtrl::focusFirstItem(BOOL prefer_text_fields, BOOL focus_flash)
         LLUICtrl * ctrl = static_cast<LLUICtrl*>(result.back());
         if(!ctrl->hasFocus())
         {
-            ctrl->setFocus(TRUE);
+            ctrl->setFocus(true);
             ctrl->onTabInto();
             if(focus_flash)
             {
                 gFocusMgr.triggerFocusFlash();
             }
         }
-        return TRUE;
+        return true;
     }
     // search for text field first
     if(prefer_text_fields)
@@ -816,14 +816,14 @@ BOOL LLUICtrl::focusFirstItem(BOOL prefer_text_fields, BOOL focus_flash)
             LLUICtrl * ctrl = static_cast<LLUICtrl*>(result.back());
             if(!ctrl->hasFocus())
             {
-                ctrl->setFocus(TRUE);
+                ctrl->setFocus(true);
                 ctrl->onTabInto();
                 if(focus_flash)
                 {
                     gFocusMgr.triggerFocusFlash();
                 }
             }
-            return TRUE;
+            return true;
         }
     }
     // no text field found, or we don't care about text fields
@@ -833,20 +833,20 @@ BOOL LLUICtrl::focusFirstItem(BOOL prefer_text_fields, BOOL focus_flash)
         LLUICtrl * ctrl = static_cast<LLUICtrl*>(result.back());
         if(!ctrl->hasFocus())
         {
-            ctrl->setFocus(TRUE);
+            ctrl->setFocus(true);
             ctrl->onTabInto();
             if(focus_flash)
             {
                 gFocusMgr.triggerFocusFlash();
             }
         }
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL LLUICtrl::focusNextItem(BOOL text_fields_only)
+bool LLUICtrl::focusNextItem(bool text_fields_only)
 {
     // this assumes that this method is called on the focus root.
     LLViewQuery query = getTabOrderQuery();
@@ -859,7 +859,7 @@ BOOL LLUICtrl::focusNextItem(BOOL text_fields_only)
     return focusNext(result);
 }
 
-BOOL LLUICtrl::focusPrevItem(BOOL text_fields_only)
+bool LLUICtrl::focusPrevItem(bool text_fields_only)
 {
     // this assumes that this method is called on the focus root.
     LLViewQuery query = getTabOrderQuery();
@@ -1011,13 +1011,13 @@ boost::signals2::connection LLUICtrl::setValidateBeforeCommit( boost::function<b
 }
 
 // virtual
-void LLUICtrl::setTentative(BOOL b)
+void LLUICtrl::setTentative(bool b)
 {
     mTentative = b;
 }
 
 // virtual
-BOOL LLUICtrl::getTentative() const
+bool LLUICtrl::getTentative() const
 {
     return mTentative;
 }
diff --git a/indra/llui/lluictrl.h b/indra/llui/lluictrl.h
index d21e8dc1c6..c56c3c43a4 100644
--- a/indra/llui/lluictrl.h
+++ b/indra/llui/lluictrl.h
@@ -39,8 +39,8 @@
 #include "llviewmodel.h"        // *TODO move dependency to .cpp file
 #include "llsearchablecontrol.h"
 
-const BOOL TAKE_FOCUS_YES = TRUE;
-const BOOL TAKE_FOCUS_NO  = FALSE;
+const bool TAKE_FOCUS_YES = true;
+const bool TAKE_FOCUS_NO  = false;
 const S32 DROP_SHADOW_FLOATER = 5;
 
 class LLUICtrl
@@ -147,27 +147,28 @@ protected:
     // We shouldn't ever need to set this directly
     //virtual void    setViewModel(const LLViewModelPtr&);
 
-    virtual BOOL    postBuild();
+    /*virtual*/ bool    postBuild() override;
 
 public:
     // LLView interface
-    /*virtual*/ BOOL    setLabelArg( const std::string& key, const LLStringExplicit& text );
-    /*virtual*/ BOOL    isCtrl() const;
-    /*virtual*/ void    onMouseEnter(S32 x, S32 y, MASK mask);
-    /*virtual*/ void    onMouseLeave(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    canFocusChildren() const;
-    /*virtual*/ BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleRightMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    setLabelArg( const std::string& key, const LLStringExplicit& text ) override;
+    /*virtual*/ bool    isCtrl() const override;
+    /*virtual*/ void    onMouseEnter(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ void    onMouseLeave(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    canFocusChildren() const override;
+    /*virtual*/ bool    handleMouseDown(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleRightMouseDown(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleRightMouseUp(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleDoubleClick(S32 x, S32 y, MASK mask) override;
 
     // From LLFocusableElement
-    /*virtual*/ void    setFocus( BOOL b );
-    /*virtual*/ BOOL    hasFocus() const;
+    /*virtual*/ void    setFocus( bool b ) override;
+    /*virtual*/ bool    hasFocus() const override;
 
     // New virtuals
 
+
     // Return NULL by default (overrride if the class has the appropriate interface)
     virtual class LLCtrlSelectionInterface* getSelectionInterface();
     virtual class LLCtrlListInterface* getListInterface();
@@ -187,22 +188,22 @@ public:
 
     void setFunctionName(const std::string& function_name);
 
-    virtual void    setTentative(BOOL b);
-    virtual BOOL    getTentative() const;
+    virtual void    setTentative(bool b);
+    virtual bool    getTentative() const;
     virtual void    setValue(const LLSD& value);
     virtual LLSD    getValue() const;
     /// When two widgets are displaying the same data (e.g. during a skin
     /// change), share their ViewModel.
     virtual void    shareViewModelFrom(const LLUICtrl& other);
 
-    virtual BOOL    setTextArg(  const std::string& key, const LLStringExplicit& text );
-    virtual void    setIsChrome(BOOL is_chrome);
+    virtual bool    setTextArg(  const std::string& key, const LLStringExplicit& text );
+    virtual void    setIsChrome(bool is_chrome);
 
-    virtual BOOL    acceptsTextInput() const; // Defaults to false
+    virtual bool    acceptsTextInput() const; // Defaults to false
 
     // A control is dirty if the user has modified its value.
     // Editable controls should override this.
-    virtual BOOL    isDirty() const; // Defauls to false
+    virtual bool    isDirty() const; // Defauls to false
     virtual void    resetDirty(); //Defaults to no-op
 
     // Call appropriate callback
@@ -223,16 +224,16 @@ public:
     void                setTransparencyType(ETypeTransparency type);
     ETypeTransparency   getTransparencyType() const {return mTransparencyType;}
 
-    BOOL    focusNextItem(BOOL text_entry_only);
-    BOOL    focusPrevItem(BOOL text_entry_only);
-    BOOL    focusFirstItem(BOOL prefer_text_fields = FALSE, BOOL focus_flash = TRUE );
+    bool    focusNextItem(bool text_entry_only);
+    bool    focusPrevItem(bool text_entry_only);
+    bool    focusFirstItem(bool prefer_text_fields = false, bool focus_flash = true );
 
     // Non Virtuals
     LLHandle<LLUICtrl> getHandle() const { return getDerivedHandle<LLUICtrl>(); }
-    BOOL            getIsChrome() const;
+    bool            getIsChrome() const;
 
-    void            setTabStop( BOOL b );
-    BOOL            hasTabStop() const;
+    void            setTabStop( bool b );
+    bool            hasTabStop() const;
 
     LLUICtrl*       getParentUICtrl() const;
 
@@ -267,7 +268,7 @@ public:
         LLSINGLETON_EMPTY_CTOR(LLTextInputFilter);
         /*virtual*/ filterResult_t operator() (const LLView* const view, const viewList_t & children) const override
         {
-            return filterResult_t(view->isCtrl() && static_cast<const LLUICtrl *>(view)->acceptsTextInput(), TRUE);
+            return filterResult_t(view->isCtrl() && static_cast<const LLUICtrl *>(view)->acceptsTextInput(), true);
         }
     };
 
@@ -319,14 +320,14 @@ protected:
     static F32 sActiveControlTransparency;
     static F32 sInactiveControlTransparency;
 
-    virtual void addInfo(LLSD & info);
+    /*virtual*/ void addInfo(LLSD & info) override;
 
 private:
 
-    BOOL            mIsChrome;
-    BOOL            mRequestsFront;
-    BOOL            mTabStop;
-    BOOL            mTentative;
+    bool            mIsChrome;
+    bool            mRequestsFront;
+    bool            mTabStop;
+    bool            mTentative;
 
     ETypeTransparency mTransparencyType;
 };
@@ -334,7 +335,7 @@ private:
 // Build time optimization, generate once in .cpp file
 #ifndef LLUICTRL_CPP
 extern template class LLUICtrl* LLView::getChild<class LLUICtrl>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 #endif
 
 #endif  // LL_LLUICTRL_H
diff --git a/indra/llui/lluictrlfactory.cpp b/indra/llui/lluictrlfactory.cpp
index f3649d68a7..a2a6d661ff 100644
--- a/indra/llui/lluictrlfactory.cpp
+++ b/indra/llui/lluictrlfactory.cpp
@@ -124,7 +124,7 @@ void LLUICtrlFactory::createChildren(LLView* viewp, LLXMLNodePtr node, const wid
         LLXMLNodePtr outputChild;
         if (output_node)
         {
-            outputChild = output_node->createChild("", FALSE);
+            outputChild = output_node->createChild("", false);
         }
 
         if (!instance().createFromXML(child_node, viewp, LLStringUtil::null, registry, outputChild))
diff --git a/indra/llui/lluistring.h b/indra/llui/lluistring.h
index 0cc699f59c..b9d4ff0ebb 100644
--- a/indra/llui/lluistring.h
+++ b/indra/llui/lluistring.h
@@ -79,7 +79,7 @@ public:
     operator LLWString() const { return getUpdatedWResult(); }
 
     bool empty() const { return getUpdatedResult().empty(); }
-    S32 length() const { return getUpdatedWResult().size(); }
+    S32 length() const { return static_cast<S32>(getUpdatedWResult().size()); }
 
     void clear();
     void clearArgs() { if (mArgs) mArgs->clear(); }
diff --git a/indra/llui/llundo.cpp b/indra/llui/llundo.cpp
index d5ff70d31a..0928cb4417 100644
--- a/indra/llui/llundo.cpp
+++ b/indra/llui/llundo.cpp
@@ -72,7 +72,7 @@ LLUndoBuffer::~LLUndoBuffer()
 //-----------------------------------------------------------------------------
 // getNextAction()
 //-----------------------------------------------------------------------------
-LLUndoBuffer::LLUndoAction* LLUndoBuffer::getNextAction(BOOL setClusterBegin)
+LLUndoBuffer::LLUndoAction* LLUndoBuffer::getNextAction(bool setClusterBegin)
 {
     LLUndoAction *nextAction = mActions[mNextAction];
 
@@ -97,11 +97,11 @@ LLUndoBuffer::LLUndoAction* LLUndoBuffer::getNextAction(BOOL setClusterBegin)
 //-----------------------------------------------------------------------------
 // undoAction()
 //-----------------------------------------------------------------------------
-BOOL LLUndoBuffer::undoAction()
+bool LLUndoBuffer::undoAction()
 {
     if (!canUndo())
     {
-        return FALSE;
+        return false;
     }
 
     S32 prevAction = (mNextAction + mNumActions - 1) % mNumActions;
@@ -118,7 +118,7 @@ BOOL LLUndoBuffer::undoAction()
         if (mNextAction == mFirstAction)
         {
             mOperationID--;
-            return FALSE;
+            return false;
         }
 
         // do wrap-around of index, but avoid negative numbers for modulo operator
@@ -127,17 +127,17 @@ BOOL LLUndoBuffer::undoAction()
 
     mOperationID--;
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // redoAction()
 //-----------------------------------------------------------------------------
-BOOL LLUndoBuffer::redoAction()
+bool LLUndoBuffer::redoAction()
 {
     if (!canRedo())
     {
-        return FALSE;
+        return false;
     }
 
     mOperationID++;
@@ -146,7 +146,7 @@ BOOL LLUndoBuffer::redoAction()
     {
         if (mNextAction == mLastAction)
         {
-            return FALSE;
+            return false;
         }
 
         mActions[mNextAction]->redo();
@@ -155,7 +155,7 @@ BOOL LLUndoBuffer::redoAction()
         mNextAction = (mNextAction + 1) % mNumActions;
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
diff --git a/indra/llui/llundo.h b/indra/llui/llundo.h
index 19cb09e6bb..dc40702be0 100644
--- a/indra/llui/llundo.h
+++ b/indra/llui/llundo.h
@@ -48,11 +48,11 @@ public:
     LLUndoBuffer( LLUndoAction (*create_func()), S32 initial_count );
     virtual ~LLUndoBuffer();
 
-    LLUndoAction *getNextAction(BOOL setClusterBegin = TRUE);
-    BOOL undoAction();
-    BOOL redoAction();
-    BOOL canUndo() { return (mNextAction != mFirstAction); }
-    BOOL canRedo() { return (mNextAction != mLastAction); }
+    LLUndoAction *getNextAction(bool setClusterBegin = true);
+    bool undoAction();
+    bool redoAction();
+    bool canUndo() { return (mNextAction != mFirstAction); }
+    bool canRedo() { return (mNextAction != mLastAction); }
 
     void flushActions();
 
diff --git a/indra/llui/llurlentry.cpp b/indra/llui/llurlentry.cpp
index 45afc9efee..198441804b 100644
--- a/indra/llui/llurlentry.cpp
+++ b/indra/llui/llurlentry.cpp
@@ -229,7 +229,7 @@ bool LLUrlEntryBase::isWikiLinkCorrect(const std::string &labeled_url) const
         label = "http://" + label;
     }
 
-    return (LLUrlRegistry::instance().hasUrl(label)) ? false : true;
+    return !LLUrlRegistry::instance().hasUrl(label);
 }
 
 std::string LLUrlEntryBase::urlToLabelWithGreyQuery(const std::string &url) const
@@ -389,7 +389,7 @@ bool LLUrlEntryInvalidSLURL::isSLURLvalid(const std::string &url) const
 
     LLURI uri(url);
     LLSD path_array = uri.pathArray();
-    S32 path_parts = path_array.size();
+    auto path_parts = path_array.size();
     S32 x,y,z;
 
     if (path_parts == actual_parts)
@@ -401,7 +401,7 @@ bool LLUrlEntryInvalidSLURL::isSLURLvalid(const std::string &url) const
 
         if((x>= 0 && x<= 256) && (y>= 0 && y<= 256) && (z>= 0))
         {
-            return TRUE;
+            return true;
         }
     }
     else if (path_parts == (actual_parts-1))
@@ -413,7 +413,7 @@ bool LLUrlEntryInvalidSLURL::isSLURLvalid(const std::string &url) const
         ;
         if((x>= 0 && x<= 256) && (y>= 0 && y<= 256))
         {
-                return TRUE;
+                return true;
         }
     }
     else if (path_parts == (actual_parts-2))
@@ -422,11 +422,11 @@ bool LLUrlEntryInvalidSLURL::isSLURLvalid(const std::string &url) const
         LLStringUtil::convertToS32(path_array[path_parts-1],x);
         if(x>= 0 && x<= 256)
         {
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 //
@@ -454,7 +454,7 @@ std::string LLUrlEntrySLURL::getLabel(const std::string &url, const LLUrlLabelCa
 
     LLURI uri(url);
     LLSD path_array = uri.pathArray();
-    S32 path_parts = path_array.size();
+    auto path_parts = path_array.size();
     if (path_parts == 5)
     {
         // handle slurl with (X,Y,Z) coordinates
@@ -1074,7 +1074,7 @@ LLUrlEntryParcel::~LLUrlEntryParcel()
 std::string LLUrlEntryParcel::getLabel(const std::string &url, const LLUrlLabelCallback &cb)
 {
     LLSD path_array = LLURI(url).pathArray();
-    S32 path_parts = path_array.size();
+    auto path_parts = path_array.size();
 
     if (path_parts < 3) // no parcel id
     {
@@ -1165,7 +1165,7 @@ std::string LLUrlEntryPlace::getLabel(const std::string &url, const LLUrlLabelCa
     LLURI uri(url);
     std::string location = unescapeUrl(uri.hostName());
     LLSD path_array = uri.pathArray();
-    S32 path_parts = path_array.size();
+    auto path_parts = path_array.size();
     if (path_parts == 3)
     {
         // handle slurl with (X,Y,Z) coordinates
@@ -1214,7 +1214,7 @@ std::string LLUrlEntryRegion::getLabel(const std::string &url, const LLUrlLabelC
     //
 
     LLSD path_array = LLURI(url).pathArray();
-    S32 path_parts = path_array.size();
+    auto path_parts = path_array.size();
 
     if (path_parts < 3) // no region name
     {
@@ -1278,7 +1278,7 @@ std::string LLUrlEntryTeleport::getLabel(const std::string &url, const LLUrlLabe
     //
     LLURI uri(url);
     LLSD path_array = uri.pathArray();
-    S32 path_parts = path_array.size();
+    auto path_parts = path_array.size();
     std::string host = uri.hostName();
     std::string label = LLTrans::getString("SLurlLabelTeleport");
     if (!host.empty())
@@ -1413,7 +1413,7 @@ std::string LLUrlEntryWorldMap::getLabel(const std::string &url, const LLUrlLabe
     //
     LLURI uri(url);
     LLSD path_array = uri.pathArray();
-    S32 path_parts = path_array.size();
+    auto path_parts = path_array.size();
     if (path_parts < 3)
     {
         return url;
@@ -1505,7 +1505,7 @@ LLUrlEntryEmail::LLUrlEntryEmail()
 
 std::string LLUrlEntryEmail::getLabel(const std::string &url, const LLUrlLabelCallback &cb)
 {
-    int pos = url.find("mailto:");
+    auto pos = url.find("mailto:");
 
     if (pos == std::string::npos)
     {
diff --git a/indra/llui/llurlentry.h b/indra/llui/llurlentry.h
index c878a74c5f..84ff278942 100644
--- a/indra/llui/llurlentry.h
+++ b/indra/llui/llurlentry.h
@@ -107,7 +107,7 @@ public:
 
     bool isWikiLinkCorrect(const std::string &url) const;
 
-    virtual bool isSLURLvalid(const std::string &url) const { return TRUE; };
+    virtual bool isSLURLvalid(const std::string &url) const { return true; };
 
 protected:
     std::string getIDStringFromUrl(const std::string &url) const;
diff --git a/indra/llui/llurlregistry.cpp b/indra/llui/llurlregistry.cpp
index 9c3994480c..3a4ce6a72f 100644
--- a/indra/llui/llurlregistry.cpp
+++ b/indra/llui/llurlregistry.cpp
@@ -263,9 +263,9 @@ bool LLUrlRegistry::findUrl(const LLWString &text, LLUrlMatch &match, const LLUr
         {
             return false;
         }
-        S32 end = start + wurl.size() - 1;
+        auto end = start + wurl.size() - 1;
 
-        match.setValues(start, end, match.getUrl(),
+        match.setValues(static_cast<U32>(start), static_cast<U32>(end), match.getUrl(),
                         match.getLabel(),
                         match.getQuery(),
                         match.getTooltip(),
diff --git a/indra/llui/llview.cpp b/indra/llui/llview.cpp
index d44f39682a..1e72228fee 100644
--- a/indra/llui/llview.cpp
+++ b/indra/llui/llview.cpp
@@ -67,11 +67,11 @@ bool    LLView::sDebugRectsShowNames = true;
 bool    LLView::sDebugKeys = false;
 bool    LLView::sDebugMouseHandling = false;
 std::string LLView::sMouseHandlerMessage;
-BOOL    LLView::sForceReshape = FALSE;
+bool    LLView::sForceReshape = false;
 std::set<LLView*> LLView::sPreviewHighlightedElements;
-BOOL LLView::sHighlightingDiffs = FALSE;
+bool LLView::sHighlightingDiffs = false;
 LLView* LLView::sPreviewClickedElement = NULL;
-BOOL    LLView::sDrawPreviewHighlights = FALSE;
+bool    LLView::sDrawPreviewHighlights = false;
 S32     LLView::sLastLeftXML = S32_MIN;
 S32     LLView::sLastBottomXML = S32_MIN;
 std::vector<LLViewDrawContext*> LLViewDrawContext::sDrawContextStack;
@@ -80,12 +80,12 @@ LLView::DrilldownFunc LLView::sDrilldown =
     boost::bind(&LLView::pointInView, _1, _2, _3, HIT_TEST_USE_BOUNDING_RECT);
 
 //#if LL_DEBUG
-BOOL LLView::sIsDrawing = FALSE;
+bool LLView::sIsDrawing = false;
 //#endif
 
 // Compiler optimization, generate extern template
 template class LLView* LLView::getChild<class LLView>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 
 static LLDefaultChildRegistry::Register<LLView> r("view");
 
@@ -148,7 +148,7 @@ LLView::LLView(const LLView::Params& p)
     mReshapeFlags(FOLLOWS_NONE),
     mFromXUI(p.from_xui),
     mIsFocusRoot(p.focus_root),
-    mLastVisible(FALSE),
+    mLastVisible(false),
     mHoverCursor(getCursorFromString(p.hover_cursor)),
     mEnabled(p.enabled),
     mMouseOpaque(p.mouse_opaque),
@@ -172,7 +172,7 @@ LLView::~LLView()
     {
         LL_DEBUGS() << "Deleting view " << mName << " during UI draw() phase" << LL_ENDL;
     }
-//  llassert(LLView::sIsDrawing == FALSE);
+//  llassert(LLView::sIsDrawing == false);
 
 //  llassert_always(sDepth == 0); // avoid deleting views while drawing! It can subtly break list iterators
 
@@ -197,15 +197,15 @@ LLView::~LLView()
 }
 
 // virtual
-BOOL LLView::isCtrl() const
+bool LLView::isCtrl() const
 {
-    return FALSE;
+    return false;
 }
 
 // virtual
-BOOL LLView::isPanel() const
+bool LLView::isPanel() const
 {
-    return FALSE;
+    return false;
 }
 
 void LLView::setToolTip(const LLStringExplicit& msg)
@@ -213,10 +213,10 @@ void LLView::setToolTip(const LLStringExplicit& msg)
     mToolTipMsg = msg;
 }
 
-BOOL LLView::setToolTipArg(const LLStringExplicit& key, const LLStringExplicit& text)
+bool LLView::setToolTipArg(const LLStringExplicit& key, const LLStringExplicit& text)
 {
     mToolTipMsg.setArg(key, text);
-    return TRUE;
+    return true;
 }
 
 void LLView::setToolTipArgs( const LLStringUtil::format_map_t& args )
@@ -231,7 +231,7 @@ void LLView::setRect(const LLRect& rect)
     updateBoundingRect();
 }
 
-void LLView::setUseBoundingRect( BOOL use_bounding_rect )
+void LLView::setUseBoundingRect( bool use_bounding_rect )
 {
     if (mUseBoundingRect != use_bounding_rect)
     {
@@ -240,7 +240,7 @@ void LLView::setUseBoundingRect( BOOL use_bounding_rect )
     }
 }
 
-BOOL LLView::getUseBoundingRect() const
+bool LLView::getUseBoundingRect() const
 {
     return mUseBoundingRect;
 }
@@ -342,11 +342,11 @@ void LLView::removeChild(LLView* child)
     if (child->mParentView == this)
     {
         // if we are removing an item we are currently iterating over, that would be bad
-        llassert(child->mInDraw == false);
+        llassert(!child->mInDraw);
         mChildList.remove( child );
         child->mParentView = NULL;
         child_tab_order_t::iterator found = mTabOrder.find(child);
-        if(found != mTabOrder.end())
+        if (found != mTabOrder.end())
         {
             mTabOrder.erase(found);
         }
@@ -358,16 +358,16 @@ void LLView::removeChild(LLView* child)
     updateBoundingRect();
 }
 
-BOOL LLView::isInVisibleChain() const
+bool LLView::isInVisibleChain() const
 {
-    BOOL visible = TRUE;
+    bool visible = true;
 
     const LLView* viewp = this;
     while(viewp)
     {
         if (!viewp->getVisible())
         {
-            visible = FALSE;
+            visible = false;
             break;
         }
         viewp = viewp->getParent();
@@ -376,16 +376,16 @@ BOOL LLView::isInVisibleChain() const
     return visible;
 }
 
-BOOL LLView::isInEnabledChain() const
+bool LLView::isInEnabledChain() const
 {
-    BOOL enabled = TRUE;
+    bool enabled = true;
 
     const LLView* viewp = this;
     while(viewp)
     {
         if (!viewp->getEnabled())
         {
-            enabled = FALSE;
+            enabled = false;
             break;
         }
         viewp = viewp->getParent();
@@ -445,13 +445,13 @@ std::string LLView::getPathname(const LLView* view)
 }
 
 // virtual
-BOOL LLView::canFocusChildren() const
+bool LLView::canFocusChildren() const
 {
-    return TRUE;
+    return true;
 }
 
 //virtual
-void LLView::setEnabled(BOOL enabled)
+void LLView::setEnabled(bool enabled)
 {
     mEnabled = enabled;
 }
@@ -469,9 +469,9 @@ bool LLView::isAvailable(const LLView* view)
 }
 
 //virtual
-BOOL LLView::setLabelArg( const std::string& key, const LLStringExplicit& text )
+bool LLView::setLabelArg( const std::string& key, const LLStringExplicit& text )
 {
-    return FALSE;
+    return false;
 }
 
 //virtual
@@ -486,20 +486,20 @@ LLRect LLView::getRequiredRect()
     return mRect;
 }
 
-BOOL LLView::focusNextRoot()
+bool LLView::focusNextRoot()
 {
     LLView::child_list_t result = LLView::getFocusRootsQuery().run(this);
     return LLView::focusNext(result);
 }
 
-BOOL LLView::focusPrevRoot()
+bool LLView::focusPrevRoot()
 {
     LLView::child_list_t result = LLView::getFocusRootsQuery().run(this);
     return LLView::focusPrev(result);
 }
 
 // static
-BOOL LLView::focusNext(LLView::child_list_t & result)
+bool LLView::focusNext(LLView::child_list_t & result)
 {
     LLView::child_list_reverse_iter_t focused = result.rend();
     for(LLView::child_list_reverse_iter_t iter = result.rbegin();
@@ -524,18 +524,18 @@ BOOL LLView::focusNext(LLView::child_list_t & result)
         if ((*next)->isCtrl() && ((LLUICtrl*)*next)->hasTabStop())
         {
             LLUICtrl * ctrl = static_cast<LLUICtrl*>(*next);
-            ctrl->setFocus(TRUE);
+            ctrl->setFocus(true);
             ctrl->onTabInto();
             gFocusMgr.triggerFocusFlash();
-            return TRUE;
+            return true;
         }
         ++next;
     }
-    return FALSE;
+    return false;
 }
 
 // static
-BOOL LLView::focusPrev(LLView::child_list_t & result)
+bool LLView::focusPrev(LLView::child_list_t & result)
 {
     LLView::child_list_iter_t focused = result.end();
     for(LLView::child_list_iter_t iter = result.begin();
@@ -562,15 +562,15 @@ BOOL LLView::focusPrev(LLView::child_list_t & result)
             LLUICtrl * ctrl = static_cast<LLUICtrl*>(*next);
             if (!ctrl->hasFocus())
             {
-                ctrl->setFocus(TRUE);
+                ctrl->setFocus(true);
                 ctrl->onTabInto();
                 gFocusMgr.triggerFocusFlash();
             }
-            return TRUE;
+            return true;
         }
         ++next;
     }
-    return FALSE;
+    return false;
 }
 
 // delete all children. Override this function if you need to
@@ -591,16 +591,24 @@ void LLView::deleteAllChildren()
     updateBoundingRect();
 }
 
-void LLView::setAllChildrenEnabled(BOOL b)
+void LLView::setAllChildrenEnabled(bool b, bool recursive /*= false*/)
 {
     for (LLView* viewp : mChildList)
     {
         viewp->setEnabled(b);
     }
+
+    if (recursive)
+    {
+        for (LLView* viewp : mChildList)
+        {
+            viewp->setAllChildrenEnabled(b, recursive);
+        }
+    }
 }
 
 // virtual
-void LLView::setVisible(BOOL visible)
+void LLView::setVisible(bool visible)
 {
     if ( mVisible != visible )
     {
@@ -618,10 +626,10 @@ void LLView::setVisible(BOOL visible)
 }
 
 // virtual
-void LLView::onVisibilityChange ( BOOL new_visibility )
+void LLView::onVisibilityChange ( bool new_visibility )
 {
-    BOOL old_visibility;
-    BOOL log_visibility_change = LLViewerEventRecorder::instance().getLoggingStatus();
+    bool old_visibility;
+    bool log_visibility_change = LLViewerEventRecorder::instance().getLoggingStatus();
     for (LLView* viewp : mChildList)
     {
         if (!viewp)
@@ -674,7 +682,7 @@ void LLView::translate(S32 x, S32 y)
 }
 
 // virtual
-BOOL LLView::canSnapTo(const LLView* other_view)
+bool LLView::canSnapTo(const LLView* other_view)
 {
     return other_view != this && other_view->getVisible();
 }
@@ -684,7 +692,7 @@ void LLView::setSnappedTo(const LLView* snap_view)
 {
 }
 
-BOOL LLView::handleHover(S32 x, S32 y, MASK mask)
+bool LLView::handleHover(S32 x, S32 y, MASK mask)
 {
     return childrenHandleHover( x, y, mask ) != NULL;
 }
@@ -728,7 +736,7 @@ LLView* LLView::childrenHandleCharEvent(const std::string& desc, const METHOD& m
     {
         for (LLView* viewp : mChildList)
         {
-            if ((viewp->*method)(c, mask, TRUE))
+            if ((viewp->*method)(c, mask, true))
             {
                 if (LLView::sDebugKeys)
                 {
@@ -797,7 +805,7 @@ LLView* LLView::childrenHandleToolTip(S32 x, S32 y, MASK mask)
 }
 
 LLView* LLView::childrenHandleDragAndDrop(S32 x, S32 y, MASK mask,
-                                       BOOL drop,
+                                       bool drop,
                                        EDragAndDropType cargo_type,
                                        void* cargo_data,
                                        EAcceptance* accept,
@@ -926,9 +934,9 @@ const std::string LLView::getToolTip() const
     return mToolTipMsg.getString();
 }
 
-BOOL LLView::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLView::handleToolTip(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     // parents provide tooltips first, which are optionally
     // overridden by children, in case child is mouse_opaque
@@ -945,22 +953,22 @@ BOOL LLView::handleToolTip(S32 x, S32 y, MASK mask)
                                           .sticky_rect(calcScreenRect())
                                           .delay_time(getTooltipTimeout()));
         }
-        handled = TRUE;
+        handled = true;
     }
 
     // child tooltips will override our own
     LLView* child_handler = childrenHandleToolTip(x, y, mask);
     if (child_handler)
     {
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
 }
 
-BOOL LLView::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLView::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (getVisible() && getEnabled())
     {
@@ -985,14 +993,14 @@ BOOL LLView::handleKey(KEY key, MASK mask, BOOL called_from_parent)
     if( !handled && !called_from_parent && mParentView)
     {
         // Upward traversal
-        handled = mParentView->handleKey( key, mask, FALSE );
+        handled = mParentView->handleKey( key, mask, false );
     }
     return handled;
 }
 
-BOOL LLView::handleKeyUp(KEY key, MASK mask, BOOL called_from_parent)
+bool LLView::handleKeyUp(KEY key, MASK mask, bool called_from_parent)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (getVisible() && getEnabled())
     {
@@ -1017,28 +1025,28 @@ BOOL LLView::handleKeyUp(KEY key, MASK mask, BOOL called_from_parent)
     if (!handled && !called_from_parent && mParentView)
     {
         // Upward traversal
-        handled = mParentView->handleKeyUp(key, mask, FALSE);
+        handled = mParentView->handleKeyUp(key, mask, false);
     }
     return handled;
 }
 
 // Called from handleKey()
 // Handles key in this object.  Checking parents and children happens in handleKey()
-BOOL LLView::handleKeyHere(KEY key, MASK mask)
+bool LLView::handleKeyHere(KEY key, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
 // Called from handleKey()
 // Handles key in this object.  Checking parents and children happens in handleKey()
-BOOL LLView::handleKeyUpHere(KEY key, MASK mask)
+bool LLView::handleKeyUpHere(KEY key, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLView::handleUnicodeChar(llwchar uni_char, BOOL called_from_parent)
+bool LLView::handleUnicodeChar(llwchar uni_char, bool called_from_parent)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (getVisible() && getEnabled())
     {
@@ -1061,7 +1069,7 @@ BOOL LLView::handleUnicodeChar(llwchar uni_char, BOOL called_from_parent)
     if (!handled && !called_from_parent && mParentView)
     {
         // Upward traversal
-        handled = mParentView->handleUnicodeChar(uni_char, FALSE);
+        handled = mParentView->handleUnicodeChar(uni_char, false);
     }
 
     if (handled)
@@ -1072,7 +1080,7 @@ BOOL LLView::handleUnicodeChar(llwchar uni_char, BOOL called_from_parent)
     return handled;
 }
 
-BOOL LLView::handleUnicodeString(char *uni_str, bool editing, BOOL called_from_parent)
+bool LLView::handleUnicodeString(char *uni_str, bool editing, bool called_from_parent)
 {
 	auto handled = FALSE;
 
@@ -1088,17 +1096,17 @@ BOOL LLView::handleUnicodeString(char *uni_str, bool editing, BOOL called_from_p
 	return handled;
 }
 
-BOOL LLView::handleUnicodeCharHere(llwchar uni_char )
+bool LLView::handleUnicodeCharHere(llwchar uni_char )
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLView::handleUnicodeStringHere(char *uni_str, bool editing)
+bool LLView::handleUnicodeStringHere(char *uni_str, bool editing)
 {
 	return FALSE;
 }
 
-BOOL LLView::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLView::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                EDragAndDropType cargo_type, void* cargo_data,
                                EAcceptance* accept,
                                std::string& tooltip_msg)
@@ -1110,56 +1118,56 @@ void LLView::onMouseCaptureLost()
 {
 }
 
-BOOL LLView::hasMouseCapture()
+bool LLView::hasMouseCapture()
 {
     return gFocusMgr.getMouseCapture() == this;
 }
 
-BOOL LLView::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLView::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     LLView* r = childrenHandleMouseUp( x, y, mask );
 
     return (r!=NULL);
 }
 
-BOOL LLView::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLView::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     LLView* r= childrenHandleMouseDown(x, y, mask );
 
     return (r!=NULL);
 }
 
-BOOL LLView::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLView::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     return childrenHandleDoubleClick( x, y, mask ) != NULL;
 }
 
-BOOL LLView::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLView::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     return childrenHandleScrollWheel( x, y, clicks ) != NULL;
 }
 
-BOOL LLView::handleScrollHWheel(S32 x, S32 y, S32 clicks)
+bool LLView::handleScrollHWheel(S32 x, S32 y, S32 clicks)
 {
     return childrenHandleScrollHWheel( x, y, clicks ) != NULL;
 }
 
-BOOL LLView::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLView::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     return childrenHandleRightMouseDown( x, y, mask ) != NULL;
 }
 
-BOOL LLView::handleRightMouseUp(S32 x, S32 y, MASK mask)
+bool LLView::handleRightMouseUp(S32 x, S32 y, MASK mask)
 {
     return childrenHandleRightMouseUp( x, y, mask ) != NULL;
 }
 
-BOOL LLView::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
+bool LLView::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
 {
     return childrenHandleMiddleMouseDown( x, y, mask ) != NULL;
 }
 
-BOOL LLView::handleMiddleMouseUp(S32 x, S32 y, MASK mask)
+bool LLView::handleMiddleMouseUp(S32 x, S32 y, MASK mask)
 {
     return childrenHandleMiddleMouseUp( x, y, mask ) != NULL;
 }
@@ -1390,7 +1398,7 @@ void LLView::drawDebugRect()
     LLUI::popMatrix();
 }
 
-void LLView::drawChild(LLView* childp, S32 x_offset, S32 y_offset, BOOL force_draw)
+void LLView::drawChild(LLView* childp, S32 x_offset, S32 y_offset, bool force_draw)
 {
     if (childp && childp->getParent() == this)
     {
@@ -1413,7 +1421,7 @@ void LLView::drawChild(LLView* childp, S32 x_offset, S32 y_offset, BOOL force_dr
 }
 
 
-void LLView::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLView::reshape(S32 width, S32 height, bool called_from_parent)
 {
     // compute how much things changed and apply reshape logic to children
     S32 delta_width = width - getRect().getWidth();
@@ -1487,7 +1495,7 @@ void LLView::reshape(S32 width, S32 height, BOOL called_from_parent)
     {
         if (mParentView)
         {
-            mParentView->reshape(mParentView->getRect().getWidth(), mParentView->getRect().getHeight(), FALSE);
+            mParentView->reshape(mParentView->getRect().getWidth(), mParentView->getRect().getHeight(), false);
         }
     }
 
@@ -1602,11 +1610,11 @@ LLRect LLView::getLocalSnapRect() const
     return local_snap_rect;
 }
 
-BOOL LLView::hasAncestor(const LLView* parentp) const
+bool LLView::hasAncestor(const LLView* parentp) const
 {
     if (!parentp)
     {
-        return FALSE;
+        return false;
     }
 
     LLView* viewp = getParent();
@@ -1614,17 +1622,17 @@ BOOL LLView::hasAncestor(const LLView* parentp) const
     {
         if (viewp == parentp)
         {
-            return TRUE;
+            return true;
         }
         viewp = viewp->getParent();
     }
 
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
 
-BOOL LLView::childHasKeyboardFocus( const std::string& childname ) const
+bool LLView::childHasKeyboardFocus( const std::string& childname ) const
 {
     LLView *focus = dynamic_cast<LLView *>(gFocusMgr.getKeyboardFocus());
 
@@ -1632,18 +1640,18 @@ BOOL LLView::childHasKeyboardFocus( const std::string& childname ) const
     {
         if (focus->getName() == childname)
         {
-            return TRUE;
+            return true;
         }
 
         focus = focus->getParent();
     }
 
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
 
-BOOL LLView::hasChild(const std::string& childname, BOOL recurse) const
+bool LLView::hasChild(const std::string& childname, bool recurse) const
 {
     return findChildView(childname, recurse) != NULL;
 }
@@ -1651,12 +1659,12 @@ BOOL LLView::hasChild(const std::string& childname, BOOL recurse) const
 //-----------------------------------------------------------------------------
 // getChildView()
 //-----------------------------------------------------------------------------
-LLView* LLView::getChildView(const std::string& name, BOOL recurse) const
+LLView* LLView::getChildView(const std::string& name, bool recurse) const
 {
     return getChild<LLView>(name, recurse);
 }
 
-LLView* LLView::findChildView(const std::string& name, BOOL recurse) const
+LLView* LLView::findChildView(const std::string& name, bool recurse) const
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
 
@@ -1685,21 +1693,21 @@ LLView* LLView::findChildView(const std::string& name, BOOL recurse) const
     return NULL;
 }
 
-BOOL LLView::parentPointInView(S32 x, S32 y, EHitTestType type) const
+bool LLView::parentPointInView(S32 x, S32 y, EHitTestType type) const
 {
     return (getUseBoundingRect() && type == HIT_TEST_USE_BOUNDING_RECT)
         ? mBoundingRect.pointInRect( x, y )
         : mRect.pointInRect( x, y );
 }
 
-BOOL LLView::pointInView(S32 x, S32 y, EHitTestType type) const
+bool LLView::pointInView(S32 x, S32 y, EHitTestType type) const
 {
     return (getUseBoundingRect() && type == HIT_TEST_USE_BOUNDING_RECT)
         ? mBoundingRect.pointInRect( x + mRect.mLeft, y + mRect.mBottom )
         : mRect.localPointInRect( x, y );
 }
 
-BOOL LLView::blockMouseEvent(S32 x, S32 y) const
+bool LLView::blockMouseEvent(S32 x, S32 y) const
 {
     return mMouseOpaque && pointInView(x, y, HIT_TEST_IGNORE_BOUNDING_RECT);
 }
@@ -1828,27 +1836,27 @@ LLCoordGL getNeededTranslation(const LLRect& input, const LLRect& constraint, S3
 // Moves the view so that it is entirely inside of constraint.
 // If the view will not fit because it's too big, aligns with the top and left.
 // (Why top and left?  That's where the drag bars are for floaters.)
-BOOL LLView::translateIntoRect(const LLRect& constraint, S32 min_overlap_pixels)
+bool LLView::translateIntoRect(const LLRect& constraint, S32 min_overlap_pixels)
 {
     return translateRectIntoRect(getRect(), constraint, min_overlap_pixels);
 }
 
-BOOL LLView::translateRectIntoRect(const LLRect& rect, const LLRect& constraint, S32 min_overlap_pixels)
+bool LLView::translateRectIntoRect(const LLRect& rect, const LLRect& constraint, S32 min_overlap_pixels)
 {
     LLCoordGL translation = getNeededTranslation(rect, constraint, min_overlap_pixels);
 
     if (translation.mX != 0 || translation.mY != 0)
     {
         translate(translation.mX, translation.mY);
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 // move this view into "inside" but not onto "exclude"
 // NOTE: if this view is already contained in "inside", we ignore the "exclude" rect
-BOOL LLView::translateIntoRectWithExclusion( const LLRect& inside, const LLRect& exclude, S32 min_overlap_pixels)
+bool LLView::translateIntoRectWithExclusion( const LLRect& inside, const LLRect& exclude, S32 min_overlap_pixels)
 {
     LLCoordGL translation = getNeededTranslation(getRect(), inside, min_overlap_pixels);
 
@@ -1884,9 +1892,9 @@ BOOL LLView::translateIntoRectWithExclusion( const LLRect& inside, const LLRect&
             }
         }
 
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -1898,7 +1906,7 @@ void LLView::centerWithin(const LLRect& bounds)
     translate( left - getRect().mLeft, bottom - getRect().mBottom );
 }
 
-BOOL LLView::localPointToOtherView( S32 x, S32 y, S32 *other_x, S32 *other_y, const LLView* other_view) const
+bool LLView::localPointToOtherView( S32 x, S32 y, S32 *other_x, S32 *other_y, const LLView* other_view) const
 {
     const LLView* cur_view = this;
     const LLView* root_view = NULL;
@@ -1909,7 +1917,7 @@ BOOL LLView::localPointToOtherView( S32 x, S32 y, S32 *other_x, S32 *other_y, co
         {
             *other_x = x;
             *other_y = y;
-            return TRUE;
+            return true;
         }
 
         x += cur_view->getRect().mLeft;
@@ -1932,16 +1940,16 @@ BOOL LLView::localPointToOtherView( S32 x, S32 y, S32 *other_x, S32 *other_y, co
         {
             *other_x = x;
             *other_y = y;
-            return TRUE;
+            return true;
         }
     }
 
     *other_x = x;
     *other_y = y;
-    return FALSE;
+    return false;
 }
 
-BOOL LLView::localRectToOtherView( const LLRect& local, LLRect* other, const LLView* other_view ) const
+bool LLView::localRectToOtherView( const LLRect& local, LLRect* other, const LLView* other_view ) const
 {
     LLRect cur_rect = local;
     const LLView* cur_view = this;
@@ -1952,7 +1960,7 @@ BOOL LLView::localRectToOtherView( const LLRect& local, LLRect* other, const LLV
         if (cur_view == other_view)
         {
             *other = cur_rect;
-            return TRUE;
+            return true;
         }
 
         cur_rect.translate(cur_view->getRect().mLeft, cur_view->getRect().mBottom);
@@ -1972,12 +1980,12 @@ BOOL LLView::localRectToOtherView( const LLRect& local, LLRect* other, const LLV
         if (cur_view == root_view)
         {
             *other = cur_rect;
-            return TRUE;
+            return true;
         }
     }
 
     *other = cur_rect;
-    return FALSE;
+    return false;
 }
 
 
diff --git a/indra/llui/llview.h b/indra/llui/llview.h
index a840498628..ad3b71505d 100644
--- a/indra/llui/llview.h
+++ b/indra/llui/llview.h
@@ -61,8 +61,8 @@ const U32   FOLLOWS_TOP     = 0x10;
 const U32   FOLLOWS_BOTTOM  = 0x20;
 const U32   FOLLOWS_ALL     = 0x33;
 
-const BOOL  MOUSE_OPAQUE = TRUE;
-const BOOL  NOT_MOUSE_OPAQUE = FALSE;
+const bool  MOUSE_OPAQUE = true;
+const bool  NOT_MOUSE_OPAQUE = false;
 
 const U32 GL_NAME_UI_RESERVED = 2;
 
@@ -169,7 +169,7 @@ private:
     LLView(const LLView& other);
 public:
 //#if LL_DEBUG
-    static BOOL sIsDrawing;
+    static bool sIsDrawing;
 //#endif
     enum ESoundFlags
     {
@@ -210,19 +210,19 @@ public:
     virtual ~LLView();
 
     // Some UI widgets need to be added as controls.  Others need to
-    // be added as regular view children.  isCtrl should return TRUE
+    // be added as regular view children.  isCtrl should return true
     // if a widget needs to be added as a ctrl
-    virtual BOOL isCtrl() const;
+    virtual bool isCtrl() const;
 
-    virtual BOOL isPanel() const;
+    virtual bool isPanel() const;
 
     //
     // MANIPULATORS
     //
-    void        setMouseOpaque( BOOL b )        { mMouseOpaque = b; }
-    BOOL        getMouseOpaque() const          { return mMouseOpaque; }
+    void        setMouseOpaque( bool b )        { mMouseOpaque = b; }
+    bool        getMouseOpaque() const          { return mMouseOpaque; }
     void        setToolTip( const LLStringExplicit& msg );
-    BOOL        setToolTipArg( const LLStringExplicit& key, const LLStringExplicit& text );
+    bool        setToolTipArg( const LLStringExplicit& key, const LLStringExplicit& text );
     void        setToolTipArgs( const LLStringUtil::format_map_t& args );
 
     virtual void setRect(const LLRect &rect);
@@ -238,8 +238,8 @@ public:
 
     void        setSoundFlags(U8 flags)         { mSoundFlags = flags; }
     void        setName(std::string name)           { mName = name; }
-    void        setUseBoundingRect( BOOL use_bounding_rect );
-    BOOL        getUseBoundingRect() const;
+    void        setUseBoundingRect( bool use_bounding_rect );
+    bool        getUseBoundingRect() const;
 
     ECursorType getHoverCursor() { return mHoverCursor; }
 
@@ -259,7 +259,7 @@ public:
     // remove the specified child from the view, and set it's parent to NULL.
     virtual void    removeChild(LLView* view);
 
-    virtual BOOL    postBuild() { return TRUE; }
+    virtual bool    postBuild() { return true; }
 
     const child_tab_order_t& getTabOrder() const        { return mTabOrder; }
 
@@ -267,15 +267,15 @@ public:
     S32 getDefaultTabGroup() const              { return mDefaultTabGroup; }
     S32 getLastTabGroup()                       { return mLastTabGroup; }
 
-    BOOL        isInVisibleChain() const;
-    BOOL        isInEnabledChain() const;
+    bool        isInVisibleChain() const;
+    bool        isInEnabledChain() const;
 
-    void        setFocusRoot(BOOL b)            { mIsFocusRoot = b; }
-    BOOL        isFocusRoot() const             { return mIsFocusRoot; }
-    virtual BOOL canFocusChildren() const;
+    void        setFocusRoot(bool b)            { mIsFocusRoot = b; }
+    bool        isFocusRoot() const             { return mIsFocusRoot; }
+    virtual bool canFocusChildren() const;
 
-    BOOL focusNextRoot();
-    BOOL focusPrevRoot();
+    bool focusNextRoot();
+    bool focusPrevRoot();
 
     // Normally we want the app menus to get priority on accelerated keys
     // However, sometimes we want to give specific views a first chance
@@ -287,13 +287,13 @@ public:
     // children, etc.
     virtual void deleteAllChildren();
 
-    void    setAllChildrenEnabled(BOOL b);
+    void    setAllChildrenEnabled(bool b, bool recursive = false);
 
-    virtual void    setVisible(BOOL visible);
-    void            setVisibleDirect(BOOL visible) { mVisible = visible; }
-    const BOOL&     getVisible() const          { return mVisible; }
-    virtual void    setEnabled(BOOL enabled);
-    BOOL            getEnabled() const          { return mEnabled; }
+    virtual void    setVisible(bool visible);
+    void            setVisibleDirect(bool visible) { mVisible = visible; }
+    const bool&     getVisible() const          { return mVisible; }
+    virtual void    setEnabled(bool enabled);
+    bool            getEnabled() const          { return mEnabled; }
     /// 'available' in this context means 'visible and enabled': in other
     /// words, can a user actually interact with this?
     virtual bool    isAvailable() const;
@@ -301,21 +301,21 @@ public:
     static bool     isAvailable(const LLView* view);
     U8              getSoundFlags() const       { return mSoundFlags; }
 
-    virtual BOOL    setLabelArg( const std::string& key, const LLStringExplicit& text );
+    virtual bool    setLabelArg( const std::string& key, const LLStringExplicit& text );
 
-    virtual void    onVisibilityChange ( BOOL new_visibility );
+    virtual void    onVisibilityChange ( bool new_visibility );
     virtual void    onUpdateScrollToChild(const LLUICtrl * cntrl);
 
-    void            pushVisible(BOOL visible)   { mLastVisible = mVisible; setVisible(visible); }
+    void            pushVisible(bool visible)   { mLastVisible = mVisible; setVisible(visible); }
     void            popVisible()                { setVisible(mLastVisible); }
-    BOOL            getLastVisible()    const   { return mLastVisible; }
+    bool            getLastVisible()    const   { return mLastVisible; }
 
     U32         getFollows() const              { return mReshapeFlags; }
-    BOOL        followsLeft() const             { return mReshapeFlags & FOLLOWS_LEFT; }
-    BOOL        followsRight() const            { return mReshapeFlags & FOLLOWS_RIGHT; }
-    BOOL        followsTop() const              { return mReshapeFlags & FOLLOWS_TOP; }
-    BOOL        followsBottom() const           { return mReshapeFlags & FOLLOWS_BOTTOM; }
-    BOOL        followsAll() const              { return mReshapeFlags & FOLLOWS_ALL; }
+    bool        followsLeft() const             { return mReshapeFlags & FOLLOWS_LEFT; }
+    bool        followsRight() const            { return mReshapeFlags & FOLLOWS_RIGHT; }
+    bool        followsTop() const              { return mReshapeFlags & FOLLOWS_TOP; }
+    bool        followsBottom() const           { return mReshapeFlags & FOLLOWS_BOTTOM; }
+    bool        followsAll() const              { return mReshapeFlags & FOLLOWS_ALL; }
 
     const LLRect&   getRect() const             { return mRect; }
     const LLRect&   getBoundingRect() const     { return mBoundingRect; }
@@ -340,9 +340,9 @@ public:
     LLView*     findNextSibling(LLView* child);
     S32         getChildCount() const           { return (S32)mChildList.size(); }
     template<class _Pr3> void sortChildren(_Pr3 _Pred) { mChildList.sort(_Pred); }
-    BOOL        hasAncestor(const LLView* parentp) const;
-    BOOL        hasChild(const std::string& childname, BOOL recurse = FALSE) const;
-    BOOL        childHasKeyboardFocus( const std::string& childname ) const;
+    bool        hasAncestor(const LLView* parentp) const;
+    bool        hasChild(const std::string& childname, bool recurse = false) const;
+    bool        childHasKeyboardFocus( const std::string& childname ) const;
 
     // these iterators are used for collapsing various tree traversals into for loops
     typedef LLTreeDFSIter<LLView, child_list_const_iter_t> tree_iterator_t;
@@ -367,27 +367,27 @@ public:
     //
 
     // Default behavior is to use reshape flags to resize child views
-    virtual void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual void    reshape(S32 width, S32 height, bool called_from_parent = true);
     virtual void    translate( S32 x, S32 y );
     void            setOrigin( S32 x, S32 y )   { mRect.translate( x - mRect.mLeft, y - mRect.mBottom ); }
-    BOOL            translateIntoRect( const LLRect& constraint, S32 min_overlap_pixels = S32_MAX);
-    BOOL            translateRectIntoRect( const LLRect& rect, const LLRect& constraint, S32 min_overlap_pixels = S32_MAX);
-    BOOL            translateIntoRectWithExclusion( const LLRect& inside, const LLRect& exclude, S32 min_overlap_pixels = S32_MAX);
+    bool            translateIntoRect( const LLRect& constraint, S32 min_overlap_pixels = S32_MAX);
+    bool            translateRectIntoRect( const LLRect& rect, const LLRect& constraint, S32 min_overlap_pixels = S32_MAX);
+    bool            translateIntoRectWithExclusion( const LLRect& inside, const LLRect& exclude, S32 min_overlap_pixels = S32_MAX);
     void            centerWithin(const LLRect& bounds);
 
     void    setShape(const LLRect& new_rect, bool by_user = false);
     virtual LLView* findSnapRect(LLRect& new_rect, const LLCoordGL& mouse_dir, LLView::ESnapType snap_type, S32 threshold, S32 padding = 0);
     virtual LLView* findSnapEdge(S32& new_edge_val, const LLCoordGL& mouse_dir, ESnapEdge snap_edge, ESnapType snap_type, S32 threshold, S32 padding = 0);
-    virtual BOOL    canSnapTo(const LLView* other_view);
+    virtual bool    canSnapTo(const LLView* other_view);
     virtual void    setSnappedTo(const LLView* snap_view);
 
     // inherited from LLFocusableElement
-    /* virtual */ BOOL  handleKey(KEY key, MASK mask, BOOL called_from_parent);
-    /* virtual */ BOOL  handleKeyUp(KEY key, MASK mask, BOOL called_from_parent);
-    /* virtual */ BOOL  handleUnicodeChar(llwchar uni_char, BOOL called_from_parent);
-    /* virtual */ BOOL  handleUnicodeString(char *uni_str, bool editing, BOOL called_from_parent);
+    /* virtual */ bool  handleKey(KEY key, MASK mask, bool called_from_parent);
+    /* virtual */ bool  handleKeyUp(KEY key, MASK mask, bool called_from_parent);
+    /* virtual */ bool  handleUnicodeChar(llwchar uni_char, bool called_from_parent);
+    /* virtual */ bool  handleUnicodeString(char *uni_str, bool editing, bool called_from_parent);
 
-    virtual BOOL    handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    virtual bool    handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                       EDragAndDropType cargo_type,
                                       void* cargo_data,
                                       EAcceptance* accept,
@@ -398,8 +398,8 @@ public:
     void parseFollowsFlags(const LLView::Params& params);
 
     // Some widgets, like close box buttons, don't need to be saved
-    BOOL getFromXUI() const { return mFromXUI; }
-    void setFromXUI(BOOL b) { mFromXUI = b; }
+    bool getFromXUI() const { return mFromXUI; }
+    void setFromXUI(bool b) { mFromXUI = b; }
 
     typedef enum e_hit_test_type
     {
@@ -407,13 +407,13 @@ public:
         HIT_TEST_IGNORE_BOUNDING_RECT
     }EHitTestType;
 
-    BOOL parentPointInView(S32 x, S32 y, EHitTestType type = HIT_TEST_USE_BOUNDING_RECT) const;
-    BOOL pointInView(S32 x, S32 y, EHitTestType type = HIT_TEST_USE_BOUNDING_RECT) const;
-    BOOL blockMouseEvent(S32 x, S32 y) const;
+    bool parentPointInView(S32 x, S32 y, EHitTestType type = HIT_TEST_USE_BOUNDING_RECT) const;
+    bool pointInView(S32 x, S32 y, EHitTestType type = HIT_TEST_USE_BOUNDING_RECT) const;
+    bool blockMouseEvent(S32 x, S32 y) const;
 
     // See LLMouseHandler virtuals for screenPointToLocal and localPointToScreen
-    BOOL localPointToOtherView( S32 x, S32 y, S32 *other_x, S32 *other_y, const LLView* other_view) const;
-    BOOL localRectToOtherView( const LLRect& local, LLRect* other, const LLView* other_view ) const;
+    bool localPointToOtherView( S32 x, S32 y, S32 *other_x, S32 *other_y, const LLView* other_view) const;
+    bool localRectToOtherView( const LLRect& local, LLRect* other, const LLView* other_view ) const;
     void screenRectToLocal( const LLRect& screen, LLRect* local ) const;
     void localRectToScreen( const LLRect& local, LLRect* screen ) const;
 
@@ -425,21 +425,21 @@ public:
 
     // LLMouseHandler functions
     //  Default behavior is to pass events to children
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleMiddleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleMiddleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleDoubleClick(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleScrollWheel(S32 x, S32 y, S32 clicks);
-    /*virtual*/ BOOL    handleScrollHWheel(S32 x, S32 y, S32 clicks);
-    /*virtual*/ BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleRightMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMiddleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMiddleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleScrollWheel(S32 x, S32 y, S32 clicks);
+    /*virtual*/ bool    handleScrollHWheel(S32 x, S32 y, S32 clicks);
+    /*virtual*/ bool    handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleRightMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleToolTip(S32 x, S32 y, MASK mask);
 
     /*virtual*/ const std::string& getName() const;
     /*virtual*/ void    onMouseCaptureLost();
-    /*virtual*/ BOOL    hasMouseCapture();
+    /*virtual*/ bool    hasMouseCapture();
     /*virtual*/ void    screenPointToLocal(S32 screen_x, S32 screen_y, S32* local_x, S32* local_y) const;
     /*virtual*/ void    localPointToScreen(S32 local_x, S32 local_y, S32* screen_x, S32* screen_y) const;
 
@@ -453,22 +453,22 @@ public:
     // static method handles NULL pointer too
     static std::string getPathname(const LLView*);
 
-    template <class T> T* findChild(const std::string& name, BOOL recurse = TRUE) const
+    template <class T> T* findChild(const std::string& name, bool recurse = true) const
     {
         LLView* child = findChildView(name, recurse);
         T* result = dynamic_cast<T*>(child);
         return result;
     }
 
-    template <class T> T* getChild(const std::string& name, BOOL recurse = TRUE) const;
+    template <class T> T* getChild(const std::string& name, bool recurse = true) const;
 
-    template <class T> T& getChildRef(const std::string& name, BOOL recurse = TRUE) const
+    template <class T> T& getChildRef(const std::string& name, bool recurse = true) const
     {
         return *getChild<T>(name, recurse);
     }
 
-    virtual LLView* getChildView(const std::string& name, BOOL recurse = TRUE) const;
-    virtual LLView* findChildView(const std::string& name, BOOL recurse = TRUE) const;
+    virtual LLView* getChildView(const std::string& name, bool recurse = true) const;
+    virtual LLView* findChildView(const std::string& name, bool recurse = true) const;
 
     template <class T> T* getDefaultWidget(const std::string& name) const
     {
@@ -496,9 +496,9 @@ public:
     //static LLFontGL::HAlign selectFontHAlign(LLXMLNodePtr node);
 
     // focuses the item in the list after the currently-focused item, wrapping if necessary
-    static  BOOL focusNext(LLView::child_list_t & result);
+    static  bool focusNext(LLView::child_list_t & result);
     // focuses the item in the list before the currently-focused item, wrapping if necessary
-    static  BOOL focusPrev(LLView::child_list_t & result);
+    static  bool focusPrev(LLView::child_list_t & result);
 
     // returns query for iterating over controls in tab order
     static const LLViewQuery & getTabOrderQuery();
@@ -515,11 +515,11 @@ public:
     // to be top-left based.
     static void setupParamsForExport(Params& p, LLView* parent);
 
-    //virtual BOOL  addChildFromParam(const LLInitParam::BaseBlock& params) { return TRUE; }
-    virtual BOOL    handleKeyHere(KEY key, MASK mask);
-    virtual BOOL    handleKeyUpHere(KEY key, MASK mask);
-    virtual BOOL    handleUnicodeCharHere(llwchar uni_char);
-    virtual BOOL    handleUnicodeStringHere(char *uni_str, bool editing);
+    //virtual bool  addChildFromParam(const LLInitParam::BaseBlock& params) { return true; }
+    virtual bool    handleKeyHere(KEY key, MASK mask);
+    virtual bool    handleKeyUpHere(KEY key, MASK mask);
+    virtual bool    handleUnicodeCharHere(llwchar uni_char);
+    virtual bool    handleUnicodeStringHere(char *uni_str, bool editing);
 
     virtual void    handleReshape(const LLRect& rect, bool by_user);
     virtual void    dirtyRect();
@@ -541,7 +541,7 @@ public:
 
 protected:
     void            drawDebugRect();
-    void            drawChild(LLView* childp, S32 x_offset = 0, S32 y_offset = 0, BOOL force_draw = FALSE);
+    void            drawChild(LLView* childp, S32 x_offset = 0, S32 y_offset = 0, bool force_draw = false);
     void            drawChildren();
     bool            visibleAndContains(S32 local_x, S32 local_Y);
     bool            visibleEnabledAndContains(S32 local_x, S32 local_y);
@@ -551,7 +551,7 @@ protected:
     LLView* childrenHandleKeyUp(KEY key, MASK mask);
     LLView* childrenHandleUnicodeChar(llwchar uni_char);
     LLView* childrenHandleDragAndDrop(S32 x, S32 y, MASK mask,
-                                              BOOL drop,
+                                              bool drop,
                                               EDragAndDropType type,
                                               void* data,
                                               EAcceptance* accept,
@@ -583,7 +583,7 @@ private:
 
     // adapter to blur distinction between handleKey() and handleUnicodeChar()
     // for childrenHandleCharEvent()
-    BOOL    handleUnicodeCharWithDummyMask(llwchar uni_char, MASK /* dummy */, BOOL from_parent)
+    bool    handleUnicodeCharWithDummyMask(llwchar uni_char, MASK /* dummy */, bool from_parent)
     {
         return handleUnicodeChar(uni_char, from_parent);
     }
@@ -592,7 +592,7 @@ private:
     child_list_t mChildList;
 
     // location in pixels, relative to surrounding structure, bottom,left=0,0
-    BOOL        mVisible;
+    bool        mVisible;
     LLRect      mRect;
     LLRect      mBoundingRect;
 
@@ -605,18 +605,18 @@ private:
     S32         mDefaultTabGroup;
     S32         mLastTabGroup;
 
-    BOOL        mEnabled;       // Enabled means "accepts input that has an effect on the state of the application."
+    bool        mEnabled;       // Enabled means "accepts input that has an effect on the state of the application."
                                 // A disabled view, for example, may still have a scrollbar that responds to mouse events.
-    BOOL        mMouseOpaque;   // Opaque views handle all mouse events that are over their rect.
+    bool        mMouseOpaque;   // Opaque views handle all mouse events that are over their rect.
     LLUIString  mToolTipMsg;    // isNull() is true if none.
 
     U8          mSoundFlags;
-    BOOL        mFromXUI;
+    bool        mFromXUI;
 
-    BOOL        mIsFocusRoot;
-    BOOL        mUseBoundingRect; // hit test against bounding rectangle that includes all child elements
+    bool        mIsFocusRoot;
+    bool        mUseBoundingRect; // hit test against bounding rectangle that includes all child elements
 
-    BOOL        mLastVisible;
+    bool        mLastVisible;
 
     bool        mInDraw;
 
@@ -681,12 +681,12 @@ public:
     static std::string sMouseHandlerMessage;
     static S32  sSelectID;
     static std::set<LLView*> sPreviewHighlightedElements;   // DEV-16869
-    static BOOL sHighlightingDiffs;                         // DEV-16869
+    static bool sHighlightingDiffs;                         // DEV-16869
     static LLView* sPreviewClickedElement;                  // DEV-16869
-    static BOOL sDrawPreviewHighlights;
+    static bool sDrawPreviewHighlights;
     static S32 sLastLeftXML;
     static S32 sLastBottomXML;
-    static BOOL sForceReshape;
+    static bool sForceReshape;
 };
 
 namespace LLInitParam
@@ -698,7 +698,7 @@ struct TypeValues<LLView::EOrientation> : public LLInitParam::TypeValuesHelper<L
 };
 }
 
-template <class T> T* LLView::getChild(const std::string& name, BOOL recurse) const
+template <class T> T* LLView::getChild(const std::string& name, bool recurse) const
 {
     LLView* child = findChildView(name, recurse);
     T* result = dynamic_cast<T*>(child);
@@ -733,7 +733,7 @@ template <class T> T* LLView::getChild(const std::string& name, BOOL recurse) co
 // require explicit specialization.  See llbutton.cpp for an example.
 #ifndef LLVIEW_CPP
 extern template class LLView* LLView::getChild<class LLView>(
-    const std::string& name, BOOL recurse) const;
+    const std::string& name, bool recurse) const;
 #endif
 
 #endif //LL_LLVIEW_H
diff --git a/indra/llui/llviewborder.cpp b/indra/llui/llviewborder.cpp
index 47cc57e42f..c1777c972c 100644
--- a/indra/llui/llviewborder.cpp
+++ b/indra/llui/llviewborder.cpp
@@ -63,7 +63,7 @@ LLViewBorder::Params::Params()
 LLViewBorder::LLViewBorder(const LLViewBorder::Params& p)
 :   LLView(p),
     mTexture( NULL ),
-    mHasKeyboardFocus( FALSE ),
+    mHasKeyboardFocus( false ),
     mBorderWidth(p.border_thickness),
     mHighlightLight(p.highlight_light_color()),
     mHighlightDark(p.highlight_dark_color()),
@@ -114,7 +114,7 @@ void LLViewBorder::draw()
         }
         else
         {
-            llassert( FALSE );  // not implemented
+            llassert( false );  // not implemented
         }
     }
 
@@ -239,7 +239,7 @@ void LLViewBorder::drawTwoPixelLines()
     gl_line_2d(left+1, bottom+1, right-1, bottom+1);
 }
 
-BOOL LLViewBorder::getBevelFromAttribute(LLXMLNodePtr node, LLViewBorder::EBevel& bevel_style)
+bool LLViewBorder::getBevelFromAttribute(LLXMLNodePtr node, LLViewBorder::EBevel& bevel_style)
 {
     if (node->hasAttribute("bevel_style"))
     {
@@ -263,8 +263,8 @@ BOOL LLViewBorder::getBevelFromAttribute(LLXMLNodePtr node, LLViewBorder::EBevel
         {
             bevel_style = LLViewBorder::BEVEL_BRIGHT;
         }
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
diff --git a/indra/llui/llviewborder.h b/indra/llui/llviewborder.h
index 2ee25fff1a..be499bb534 100644
--- a/indra/llui/llviewborder.h
+++ b/indra/llui/llviewborder.h
@@ -66,12 +66,12 @@ protected:
 public:
     virtual void setValue(const LLSD& val) { setRect(LLRect(val)); }
 
-    virtual BOOL isCtrl() const { return FALSE; }
+    virtual bool isCtrl() const { return false; }
 
     // llview functionality
     virtual void draw();
 
-    static BOOL getBevelFromAttribute(LLXMLNodePtr node, LLViewBorder::EBevel& bevel_style);
+    static bool getBevelFromAttribute(LLXMLNodePtr node, LLViewBorder::EBevel& bevel_style);
 
     void        setBorderWidth(S32 width)           { mBorderWidth = width; }
     S32         getBorderWidth() const              { return mBorderWidth; }
@@ -87,7 +87,7 @@ public:
 
     EStyle      getStyle() const { return mStyle; }
 
-    void        setKeyboardFocusHighlight( BOOL b ) { mHasKeyboardFocus = b; }
+    void        setKeyboardFocusHighlight( bool b ) { mHasKeyboardFocus = b; }
 
 private:
     void        drawOnePixelLines();
@@ -103,7 +103,7 @@ private:
     LLUIColor   mBackgroundColor;
     S32         mBorderWidth;
     LLPointer<LLUIImage>    mTexture;
-    BOOL        mHasKeyboardFocus;
+    bool        mHasKeyboardFocus;
 };
 
 #endif // LL_LLVIEWBORDER_H
diff --git a/indra/llui/llviewereventrecorder.cpp b/indra/llui/llviewereventrecorder.cpp
index 8154a98b85..1bf3e3c43b 100644
--- a/indra/llui/llviewereventrecorder.cpp
+++ b/indra/llui/llviewereventrecorder.cpp
@@ -124,7 +124,7 @@ void LLViewerEventRecorder::updateMouseEventInfo(S32 local_x, S32 local_y, S32 g
   LL_DEBUGS() << "LLViewerEventRecorder::updateMouseEventInfo after updatemouseeventinfo - local_x|global x   "<< this->local_x << " " << this->global_x  << "local/global y " << this->local_y << " " << this->global_y << " mname: " << mName << " xui: " << xui << LL_ENDL;
 }
 
-void LLViewerEventRecorder::logVisibilityChange(std::string xui, std::string name, BOOL visibility, std::string event_subtype) {
+void LLViewerEventRecorder::logVisibilityChange(std::string xui, std::string name, bool visibility, std::string event_subtype) {
 
   LLSD  event=LLSD::emptyMap();
 
diff --git a/indra/llui/llviewereventrecorder.h b/indra/llui/llviewereventrecorder.h
index 8c41d306ca..9e752e8090 100644
--- a/indra/llui/llviewereventrecorder.h
+++ b/indra/llui/llviewereventrecorder.h
@@ -55,7 +55,7 @@ public:
   void logKeyEvent(KEY key, MASK mask);
   void logKeyUnicodeEvent(llwchar uni_char);
 
-  void logVisibilityChange(std::string xui, std::string name, BOOL visibility, std::string event_subtype);
+  void logVisibilityChange(std::string xui, std::string name, bool visibility, std::string event_subtype);
 
   void clear_xui();
   std::string get_xui();
diff --git a/indra/llui/llviewquery.cpp b/indra/llui/llviewquery.cpp
index 8f9d05d57e..4835a60e77 100644
--- a/indra/llui/llviewquery.cpp
+++ b/indra/llui/llviewquery.cpp
@@ -34,12 +34,12 @@ void LLQuerySorter::sort(LLView * parent, viewList_t &children) const {}
 
 filterResult_t LLLeavesFilter::operator() (const LLView* const view, const viewList_t & children) const
 {
-    return filterResult_t(children.empty(), TRUE);
+    return filterResult_t(children.empty(), true);
 }
 
 filterResult_t LLRootsFilter::operator() (const LLView* const view, const viewList_t & children) const
 {
-    return filterResult_t(TRUE, FALSE);
+    return filterResult_t(true, false);
 }
 
 filterResult_t LLVisibleFilter::operator() (const LLView* const view, const viewList_t & children) const
@@ -58,7 +58,7 @@ filterResult_t LLTabStopFilter::operator() (const LLView* const view, const view
 
 filterResult_t LLCtrlFilter::operator() (const LLView* const view, const viewList_t & children) const
 {
-    return filterResult_t(view->isCtrl(),TRUE);
+    return filterResult_t(view->isCtrl(),true);
 }
 
 //
@@ -79,7 +79,7 @@ viewList_t LLViewQuery::run(LLView* view) const
     }
 
     viewList_t filtered_children;
-    filterResult_t post(TRUE, TRUE);
+    filterResult_t post(true, true);
     if(pre.second)
     {
         // run filters on children
@@ -123,7 +123,7 @@ void LLViewQuery::filterChildren(LLView* parent_view, viewList_t & filtered_chil
 
 filterResult_t LLViewQuery::runFilters(LLView * view, const viewList_t children, const filterList_t filters) const
 {
-    filterResult_t result = filterResult_t(TRUE, TRUE);
+    filterResult_t result = filterResult_t(true, true);
     for(filterList_const_iter_t iter = filters.begin();
         iter != filters.end();
         iter++)
diff --git a/indra/llui/llviewquery.h b/indra/llui/llviewquery.h
index 2fc7fc476a..c03a15e8f9 100644
--- a/indra/llui/llviewquery.h
+++ b/indra/llui/llviewquery.h
@@ -35,7 +35,7 @@
 class LLView;
 
 typedef std::list<LLView *>         viewList_t;
-typedef std::pair<BOOL, BOOL>       filterResult_t;
+typedef std::pair<bool, bool>       filterResult_t;
 
 // Abstract base class for all query filters.
 class LLQueryFilter
@@ -93,7 +93,7 @@ class LLWidgetTypeFilter : public LLQueryFilter
 {
     /*virtual*/ filterResult_t operator() (const LLView* const view, const viewList_t & children) const
     {
-        return filterResult_t(dynamic_cast<const T*>(view) != NULL, TRUE);
+        return filterResult_t(dynamic_cast<const T*>(view) != NULL, true);
     }
 
 };
diff --git a/indra/llui/llvirtualtrackball.cpp b/indra/llui/llvirtualtrackball.cpp
index deb357cd9f..8166afc89b 100644
--- a/indra/llui/llvirtualtrackball.cpp
+++ b/indra/llui/llvirtualtrackball.cpp
@@ -165,9 +165,9 @@ LLVirtualTrackball::~LLVirtualTrackball()
 {
 }
 
-BOOL LLVirtualTrackball::postBuild()
+bool LLVirtualTrackball::postBuild()
 {
-    return TRUE;
+    return true;
 }
 
 
@@ -233,7 +233,7 @@ void LLVirtualTrackball::draw()
     }
 
     // hide the direction labels when disabled
-    BOOL enabled = isInEnabledChain();
+    bool enabled = isInEnabledChain();
     mLabelN->setVisible(enabled);
     mLabelE->setVisible(enabled);
     mLabelS->setVisible(enabled);
@@ -384,7 +384,7 @@ void LLVirtualTrackball::getAzimuthAndElevationDeg(const LLQuaternion &quat, F32
     elevation *= RAD_TO_DEG;
 }
 
-BOOL LLVirtualTrackball::handleHover(S32 x, S32 y, MASK mask)
+bool LLVirtualTrackball::handleHover(S32 x, S32 y, MASK mask)
 {
     if (hasMouseCapture())
     {
@@ -413,7 +413,7 @@ BOOL LLVirtualTrackball::handleHover(S32 x, S32 y, MASK mask)
         { // set on click mode
             if (!pointInTouchCircle(x, y))
             {
-                return TRUE; // don't drag outside the circle
+                return true; // don't drag outside the circle
             }
 
             F32 radius = mTouchArea->getRect().getWidth() / 2;
@@ -453,10 +453,10 @@ BOOL LLVirtualTrackball::handleHover(S32 x, S32 y, MASK mask)
         mPrevY = y;
         onCommit();
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLVirtualTrackball::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLVirtualTrackball::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if (hasMouseCapture())
     {
@@ -468,7 +468,7 @@ BOOL LLVirtualTrackball::handleMouseUp(S32 x, S32 y, MASK mask)
     return LLView::handleMouseUp(x, y, mask);
 }
 
-BOOL LLVirtualTrackball::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLVirtualTrackball::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (pointInTouchCircle(x, y))
     {
@@ -481,7 +481,7 @@ BOOL LLVirtualTrackball::handleMouseDown(S32 x, S32 y, MASK mask)
     return LLView::handleMouseDown(x, y, mask);
 }
 
-BOOL LLVirtualTrackball::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLVirtualTrackball::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     if (pointInTouchCircle(x, y))
     {
@@ -491,26 +491,26 @@ BOOL LLVirtualTrackball::handleRightMouseDown(S32 x, S32 y, MASK mask)
     return LLView::handleRightMouseDown(x, y, mask);
 }
 
-BOOL LLVirtualTrackball::handleKeyHere(KEY key, MASK mask)
+bool LLVirtualTrackball::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     switch (key)
     {
     case KEY_DOWN:
         onRotateTopClick();
-        handled = TRUE;
+        handled = true;
         break;
     case KEY_LEFT:
         onRotateRightClick();
-        handled = TRUE;
+        handled = true;
         break;
     case KEY_UP:
         onRotateBottomClick();
-        handled = TRUE;
+        handled = true;
         break;
     case KEY_RIGHT:
         onRotateLeftClick();
-        handled = TRUE;
+        handled = true;
         break;
     default:
         break;
diff --git a/indra/llui/llvirtualtrackball.h b/indra/llui/llvirtualtrackball.h
index 5eb9b548e5..61a78b2398 100644
--- a/indra/llui/llvirtualtrackball.h
+++ b/indra/llui/llvirtualtrackball.h
@@ -79,13 +79,13 @@ public:
 
 
     virtual ~LLVirtualTrackball();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleKeyHere(KEY key, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleKeyHere(KEY key, MASK mask);
 
     virtual void    draw();
 
diff --git a/indra/llui/llxuiparser.cpp b/indra/llui/llxuiparser.cpp
index 0d3819ff5c..8fd85a89a1 100644
--- a/indra/llui/llxuiparser.cpp
+++ b/indra/llui/llxuiparser.cpp
@@ -365,7 +365,7 @@ void LLXSDWriter::writeXSD(const std::string& type_name, LLXMLNodePtr node, cons
 
     // duplicate element choices
     LLXMLNodeList children;
-    mElementNode->getChildren("xs:element", children, FALSE);
+    mElementNode->getChildren("xs:element", children, false);
     for (LLXMLNodeList::iterator child_it = children.begin(); child_it != children.end(); ++child_it)
     {
         LLXMLNodePtr child_copy = child_it->second->deepCopy();
@@ -930,10 +930,10 @@ bool LLXUIParser::writeFlag(Parser& parser, const void* val_ptr, name_stack_t& s
 
 bool LLXUIParser::readBoolValue(Parser& parser, void* val_ptr)
 {
-    S32 value;
+    bool value;
     LLXUIParser& self = static_cast<LLXUIParser&>(parser);
     bool success = self.mCurReadNode->getBoolValue(1, &value);
-    *((bool*)val_ptr) = (value != FALSE);
+    *((bool*)val_ptr) = value;
     return success;
 }
 
@@ -1426,7 +1426,7 @@ bool LLSimpleXUIParser::readXUI(const std::string& filename, LLInitParam::BaseBl
 
     mEmptyLeafNode.push_back(false);
 
-    if( !XML_ParseBuffer(mParser, bytes_read, TRUE ) )
+    if( !XML_ParseBuffer(mParser, bytes_read, true ) )
     {
         LL_WARNS("ReadXUI") << "Error while parsing file  " << filename << LL_ENDL;
         XML_ParserFree( mParser );
diff --git a/indra/llui/llxyvector.cpp b/indra/llui/llxyvector.cpp
index 9fc31488a5..19bd8465b9 100644
--- a/indra/llui/llxyvector.cpp
+++ b/indra/llui/llxyvector.cpp
@@ -66,7 +66,7 @@ LLXYVector::Params::Params()
     ghost_color("ghost_color"),
     area_color("area_color", LLColor4::grey4),
     grid_color("grid_color", LLColor4::grey % 0.25f),
-    logarithmic("logarithmic", FALSE)
+    logarithmic("logarithmic", false)
 {
 }
 
@@ -142,12 +142,12 @@ LLXYVector::~LLXYVector()
 {
 }
 
-BOOL LLXYVector::postBuild()
+bool LLXYVector::postBuild()
 {
     mLogScaleX = (2 * log(mMaxValueX)) / mTouchArea->getRect().getWidth();
     mLogScaleY = (2 * log(mMaxValueY)) / mTouchArea->getRect().getHeight();
 
-    return TRUE;
+    return true;
 }
 
 void drawArrow(S32 tailX, S32 tailY, S32 tipX, S32 tipY, LLColor4 color)
@@ -275,7 +275,7 @@ void LLXYVector::update()
     mYEntry->setValue(mValueY);
 }
 
-BOOL LLXYVector::handleHover(S32 x, S32 y, MASK mask)
+bool LLXYVector::handleHover(S32 x, S32 y, MASK mask)
 {
     if (hasMouseCapture())
     {
@@ -298,10 +298,10 @@ BOOL LLXYVector::handleHover(S32 x, S32 y, MASK mask)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLXYVector::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLXYVector::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if (hasMouseCapture())
     {
@@ -311,7 +311,7 @@ BOOL LLXYVector::handleMouseUp(S32 x, S32 y, MASK mask)
 
     if (mTouchArea->getRect().pointInRect(x, y))
     {
-        return TRUE;
+        return true;
     }
     else
     {
@@ -319,7 +319,7 @@ BOOL LLXYVector::handleMouseUp(S32 x, S32 y, MASK mask)
     }
 }
 
-BOOL LLXYVector::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLXYVector::handleMouseDown(S32 x, S32 y, MASK mask)
 {
 
     if (mTouchArea->getRect().pointInRect(x, y))
@@ -327,7 +327,7 @@ BOOL LLXYVector::handleMouseDown(S32 x, S32 y, MASK mask)
         gFocusMgr.setMouseCapture(this);
         make_ui_sound("UISndClick");
 
-        return TRUE;
+        return true;
     }
     else
     {
diff --git a/indra/llui/llxyvector.h b/indra/llui/llxyvector.h
index 6bebf347e8..bc41213c13 100644
--- a/indra/llui/llxyvector.h
+++ b/indra/llui/llxyvector.h
@@ -59,18 +59,18 @@ public:
         Optional<LLUIColor>                 ghost_color;
         Optional<LLUIColor>                 area_color;
         Optional<LLUIColor>                 grid_color;
-        Optional<BOOL>                      logarithmic;
+        Optional<bool>                      logarithmic;
 
         Params();
     };
 
 
     virtual ~LLXYVector();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
 
     virtual void    draw();
 
@@ -113,7 +113,7 @@ private:
     LLUIColor mAreaColor;
     LLUIColor mGridColor;
 
-    BOOL mLogarithmic;
+    bool mLogarithmic;
     F32 mLogScaleX;
     F32 mLogScaleY;
 };
diff --git a/indra/llui/tests/llurlentry_test.cpp b/indra/llui/tests/llurlentry_test.cpp
index 729b983e79..088cdd675b 100644
--- a/indra/llui/tests/llurlentry_test.cpp
+++ b/indra/llui/tests/llurlentry_test.cpp
@@ -58,7 +58,7 @@
 typedef std::map<std::string, LLControlGroup*> settings_map_t;
 settings_map_t LLUI::sSettingGroups;
 
-BOOL LLControlGroup::getBOOL(const std::string& name)
+bool LLControlGroup::getBOOL(const std::string& name)
 {
     return false;
 }
diff --git a/indra/llwindow/lldragdropwin32.cpp b/indra/llwindow/lldragdropwin32.cpp
index b164eb9579..15490ef953 100644
--- a/indra/llwindow/lldragdropwin32.cpp
+++ b/indra/llwindow/lldragdropwin32.cpp
@@ -124,7 +124,7 @@ class LLDragDropWin32Target:
                         ScreenToClient( mAppWindowHandle, &pt2 );
 
                         LLCoordWindow cursor_coord_window( pt2.x, pt2.y );
-                        MASK mask = gKeyboard->currentMask(TRUE);
+                        MASK mask = gKeyboard->currentMask(true);
 
                         LLWindowCallbacks::DragNDropResult result = window_imp->completeDragNDropRequest( cursor_coord_window.convert(), mask,
                             LLWindowCallbacks::DNDA_START_TRACKING, mDropUrl );
@@ -179,7 +179,7 @@ class LLDragDropWin32Target:
                     ScreenToClient( mAppWindowHandle, &pt2 );
 
                     LLCoordWindow cursor_coord_window( pt2.x, pt2.y );
-                    MASK mask = gKeyboard->currentMask(TRUE);
+                    MASK mask = gKeyboard->currentMask(true);
 
                     LLWindowCallbacks::DragNDropResult result = window_imp->completeDragNDropRequest( cursor_coord_window.convert(), mask,
                         LLWindowCallbacks::DNDA_TRACK, mDropUrl );
@@ -219,7 +219,7 @@ class LLDragDropWin32Target:
             if (NULL != window_imp)
             {
                 LLCoordGL gl_coord( 0, 0 );
-                MASK mask = gKeyboard->currentMask(TRUE);
+                MASK mask = gKeyboard->currentMask(true);
                 window_imp->completeDragNDropRequest( gl_coord, mask, LLWindowCallbacks::DNDA_STOP_TRACKING, mDropUrl );
             };
             return S_OK;
@@ -249,7 +249,7 @@ class LLDragDropWin32Target:
                     LL_INFOS() << LL_ENDL;
 
                     // no keyboard modifier option yet but we could one day
-                    MASK mask = gKeyboard->currentMask( TRUE );
+                    MASK mask = gKeyboard->currentMask( true );
 
                     // actually do the drop
                     LLWindowCallbacks::DragNDropResult result = window_imp->completeDragNDropRequest( gl_coord, mask,
@@ -312,7 +312,7 @@ LLDragDropWin32::~LLDragDropWin32()
 bool LLDragDropWin32::init( HWND hWnd )
 {
     if ( NOERROR != OleInitialize( NULL ) )
-        return FALSE;
+        return false;
 
     mDropTarget = new LLDragDropWin32Target( hWnd );
     if ( mDropTarget )
diff --git a/indra/llwindow/lldxhardware.cpp b/indra/llwindow/lldxhardware.cpp
index f972e8f628..d916d95713 100644
--- a/indra/llwindow/lldxhardware.cpp
+++ b/indra/llwindow/lldxhardware.cpp
@@ -216,7 +216,7 @@ HRESULT GetVideoMemoryViaWMI(WCHAR* strInputDeviceID, DWORD* pdwAdapterRam)
 }
 
 //static
-S32 LLDXHardware::getMBVideoMemoryViaWMI()
+U32 LLDXHardware::getMBVideoMemoryViaWMI()
 {
     DWORD vram = 0;
     if (SUCCEEDED(GetVideoMemoryViaWMI(NULL, &vram)))
@@ -454,10 +454,10 @@ void get_wstring(IDxDiagContainer* containerp, WCHAR* wszPropName, WCHAR* wszPro
         switch( var.vt )
         {
             case VT_UI4:
-                swprintf( wszPropValue, L"%d", var.ulVal ); /* Flawfinder: ignore */
+                swprintf( wszPropValue, outputSize, L"%d", var.ulVal ); /* Flawfinder: ignore */
                 break;
             case VT_I4:
-                swprintf( wszPropValue, L"%d", var.lVal );  /* Flawfinder: ignore */
+                swprintf( wszPropValue, outputSize, L"%d", var.lVal );  /* Flawfinder: ignore */
                 break;
             case VT_BOOL:
                 wcscpy( wszPropValue, (var.boolVal) ? L"true" : L"false" ); /* Flawfinder: ignore */
@@ -483,7 +483,7 @@ std::string get_string(IDxDiagContainer *containerp, WCHAR *wszPropName)
 
 LLVersion::LLVersion()
 {
-    mValid = FALSE;
+    mValid = false;
     S32 i;
     for (i = 0; i < 4; i++)
     {
@@ -491,7 +491,7 @@ LLVersion::LLVersion()
     }
 }
 
-BOOL LLVersion::set(const std::string &version_string)
+bool LLVersion::set(const std::string &version_string)
 {
     S32 i;
     for (i = 0; i < 4; i++)
@@ -518,11 +518,11 @@ BOOL LLVersion::set(const std::string &version_string)
         {
             mFields[i] = 0;
         }
-        mValid = FALSE;
+        mValid = false;
     }
     else
     {
-        mValid = TRUE;
+        mValid = true;
     }
     return mValid;
 }
@@ -678,10 +678,10 @@ LLDXDevice *LLDXHardware::findDevice(const std::string &vendor, const std::strin
 }
 */
 
-BOOL LLDXHardware::getInfo(BOOL vram_only)
+bool LLDXHardware::getInfo(bool vram_only)
 {
     LLTimer hw_timer;
-    BOOL ok = FALSE;
+    bool ok = false;
     HRESULT       hr;
 
     // CLSID_DxDiagProvider does not work with Multithreaded?
@@ -809,7 +809,7 @@ BOOL LLDXHardware::getInfo(BOOL vram_only)
 
         if (vram_only)
         {
-            ok = TRUE;
+            ok = true;
             goto LCleanup;
         }
 
@@ -869,7 +869,7 @@ BOOL LLDXHardware::getInfo(BOOL vram_only)
 
             tokenizer::iterator iter = tokens.begin();
             S32 count = 0;
-            BOOL valid = TRUE;
+            bool valid = true;
             for (;(iter != tokens.end()) && (count < 3);++iter)
             {
                 switch (count)
@@ -877,7 +877,7 @@ BOOL LLDXHardware::getInfo(BOOL vram_only)
                 case 0:
                     if (strcmp(iter->c_str(), "PCI"))
                     {
-                        valid = FALSE;
+                        valid = false;
                     }
                     break;
                 case 1:
@@ -948,7 +948,7 @@ BOOL LLDXHardware::getInfo(BOOL vram_only)
     }
 
     // dumpDevices();
-    ok = TRUE;
+    ok = true;
 
 LCleanup:
     if (!ok)
diff --git a/indra/llwindow/lldxhardware.h b/indra/llwindow/lldxhardware.h
index 12273e97bc..2b879e021c 100644
--- a/indra/llwindow/lldxhardware.h
+++ b/indra/llwindow/lldxhardware.h
@@ -37,12 +37,12 @@ class LLVersion
 {
 public:
     LLVersion();
-    BOOL set(const std::string &version_string);
+    bool set(const std::string &version_string);
     S32 getField(const S32 field_num);
 protected:
     std::string mVersionString;
     S32 mFields[4];
-    BOOL mValid;
+    bool mValid;
 };
 
 class LLDXDriverFile
@@ -84,9 +84,9 @@ public:
     void setWriteDebugFunc(void (*func)(const char*));
     void cleanup();
 
-    // Returns TRUE on success.
-    // vram_only TRUE does a "light" probe.
-    BOOL getInfo(BOOL vram_only);
+    // Returns true on success.
+    // vram_only true does a "light" probe.
+    bool getInfo(bool vram_only);
 
     // WMI can return multiple GPU drivers
     // specify which one to output
@@ -104,7 +104,7 @@ public:
 
     // Will get memory of best GPU in MB, return memory on sucsess, 0 on failure
     // Note: WMI is not accurate in some cases
-    static S32 getMBVideoMemoryViaWMI();
+    static U32 getMBVideoMemoryViaWMI();
 
     // Find a particular device that matches the following specs.
     // Empty strings indicate that you don't care.
diff --git a/indra/llwindow/llkeyboard.cpp b/indra/llwindow/llkeyboard.cpp
index d4b0743f32..d76a90e98a 100644
--- a/indra/llwindow/llkeyboard.cpp
+++ b/indra/llwindow/llkeyboard.cpp
@@ -54,10 +54,10 @@ LLKeyboard::LLKeyboard() : mCallbacks(NULL)
     for (i = 0; i < KEY_COUNT; i++)
     {
         mKeyLevelFrameCount[i] = 0;
-        mKeyLevel[i] = FALSE;
-        mKeyUp[i]    = FALSE;
-        mKeyDown[i]  = FALSE;
-        mKeyRepeated[i] = FALSE;
+        mKeyLevel[i] = false;
+        mKeyUp[i]    = false;
+        mKeyDown[i]  = false;
+        mKeyRepeated[i] = false;
     }
 
     mInsertMode = LL_KIM_INSERT;
@@ -149,14 +149,14 @@ void LLKeyboard::addKeyName(KEY key, const std::string& name)
 
 void LLKeyboard::resetKeyDownAndHandle()
 {
-    MASK mask = currentMask(FALSE);
+    MASK mask = currentMask(false);
     for (S32 i = 0; i < KEY_COUNT; i++)
     {
         if (mKeyLevel[i])
         {
-            mKeyDown[i] = FALSE;
-            mKeyLevel[i] = FALSE;
-            mKeyUp[i] = TRUE;
+            mKeyDown[i] = false;
+            mKeyLevel[i] = false;
+            mKeyUp[i] = true;
             mCurTranslatedKey = (KEY)i;
             mCallbacks->handleTranslatedKeyUp(i, mask);
         }
@@ -173,28 +173,28 @@ void LLKeyboard::resetKeys()
     {
         if( mKeyLevel[i] )
         {
-            mKeyLevel[i] = FALSE;
+            mKeyLevel[i] = false;
         }
     }
 
     for (i = 0; i < KEY_COUNT; i++)
     {
-        mKeyUp[i] = FALSE;
+        mKeyUp[i] = false;
     }
 
     for (i = 0; i < KEY_COUNT; i++)
     {
-        mKeyDown[i] = FALSE;
+        mKeyDown[i] = false;
     }
 
     for (i = 0; i < KEY_COUNT; i++)
     {
-        mKeyRepeated[i] = FALSE;
+        mKeyRepeated[i] = false;
     }
 }
 
 
-BOOL LLKeyboard::translateKey(const NATIVE_KEY_TYPE os_key, KEY *out_key)
+bool LLKeyboard::translateKey(const NATIVE_KEY_TYPE os_key, KEY *out_key)
 {
 
     // Only translate keys in the map, ignore all other keys for now
@@ -203,12 +203,12 @@ BOOL LLKeyboard::translateKey(const NATIVE_KEY_TYPE os_key, KEY *out_key)
     {
         //LL_WARNS() << "Unknown virtual key " << os_key << LL_ENDL;
         *out_key = 0;
-        return FALSE;
+        return false;
     }
     else
     {
         *out_key = iter->second;
-        return TRUE;
+        return true;
     }
 }
 
@@ -226,47 +226,47 @@ LLKeyboard::NATIVE_KEY_TYPE LLKeyboard::inverseTranslateKey(const KEY translated
 }
 
 
-BOOL LLKeyboard::handleTranslatedKeyDown(KEY translated_key, U32 translated_mask)
+bool LLKeyboard::handleTranslatedKeyDown(KEY translated_key, U32 translated_mask)
 {
-    BOOL handled = FALSE;
-    BOOL repeated = FALSE;
+    bool handled = false;
+    bool repeated = false;
 
     // is this the first time the key went down?
     // if so, generate "character" message
     if( !mKeyLevel[translated_key] )
     {
-        mKeyLevel[translated_key] = TRUE;
+        mKeyLevel[translated_key] = true;
         mKeyLevelTimer[translated_key].reset();
         mKeyLevelFrameCount[translated_key] = 0;
-        mKeyRepeated[translated_key] = FALSE;
+        mKeyRepeated[translated_key] = false;
     }
     else
     {
         // Level is already down, assume it's repeated.
-        repeated = TRUE;
-        mKeyRepeated[translated_key] = TRUE;
+        repeated = true;
+        mKeyRepeated[translated_key] = true;
     }
 
-    mKeyDown[translated_key] = TRUE;
+    mKeyDown[translated_key] = true;
     mCurTranslatedKey = (KEY)translated_key;
     handled = mCallbacks->handleTranslatedKeyDown(translated_key, translated_mask, repeated);
     return handled;
 }
 
 
-BOOL LLKeyboard::handleTranslatedKeyUp(KEY translated_key, U32 translated_mask)
+bool LLKeyboard::handleTranslatedKeyUp(KEY translated_key, U32 translated_mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if( mKeyLevel[translated_key] )
     {
-        mKeyLevel[translated_key] = FALSE;
+        mKeyLevel[translated_key] = false;
 
         // Only generate key up events if the key is thought to
         // be down.  This allows you to call resetKeys() in the
         // middle of a frame and ignore subsequent KEY_UP
         // messages in the same frame.  This was causing the
         // sequence W<return> in chat to move agents forward. JC
-        mKeyUp[translated_key] = TRUE;
+        mKeyUp[translated_key] = true;
         handled = mCallbacks->handleTranslatedKeyUp(translated_key, translated_mask);
     }
 
@@ -302,14 +302,14 @@ S32 LLKeyboard::getKeyElapsedFrameCount(KEY key)
 }
 
 // static
-BOOL LLKeyboard::keyFromString(const std::string& str, KEY *key)
+bool LLKeyboard::keyFromString(const std::string& str, KEY *key)
 {
     std::string instring(str);
     size_t length = instring.size();
 
     if (length < 1)
     {
-        return FALSE;
+        return false;
     }
     if (length == 1)
     {
@@ -322,7 +322,7 @@ BOOL LLKeyboard::keyFromString(const std::string& str, KEY *key)
             ('{' <= ch && ch <= '~'))   // {|}~
         {
             *key = ch;
-            return TRUE;
+            return true;
         }
     }
 
@@ -331,10 +331,10 @@ BOOL LLKeyboard::keyFromString(const std::string& str, KEY *key)
     if (res != 0)
     {
         *key = res;
-        return TRUE;
+        return true;
     }
     LL_WARNS() << "keyFromString failed: " << str << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
 
@@ -482,52 +482,52 @@ std::string LLKeyboard::stringFromAccelerator(MASK accel_mask, EMouseClickType c
 }
 
 //static
-BOOL LLKeyboard::maskFromString(const std::string& str, MASK *mask)
+bool LLKeyboard::maskFromString(const std::string& str, MASK *mask)
 {
     std::string instring(str);
     if (instring == "NONE")
     {
         *mask = MASK_NONE;
-        return TRUE;
+        return true;
     }
     else if (instring == "SHIFT")
     {
         *mask = MASK_SHIFT;
-        return TRUE;
+        return true;
     }
     else if (instring == "CTL")
     {
         *mask = MASK_CONTROL;
-        return TRUE;
+        return true;
     }
     else if (instring == "ALT")
     {
         *mask = MASK_ALT;
-        return TRUE;
+        return true;
     }
     else if (instring == "CTL_SHIFT")
     {
         *mask = MASK_CONTROL | MASK_SHIFT;
-        return TRUE;
+        return true;
     }
     else if (instring == "ALT_SHIFT")
     {
         *mask = MASK_ALT | MASK_SHIFT;
-        return TRUE;
+        return true;
     }
     else if (instring == "CTL_ALT")
     {
         *mask = MASK_CONTROL | MASK_ALT;
-        return TRUE;
+        return true;
     }
     else if (instring == "CTL_ALT_SHIFT")
     {
         *mask = MASK_CONTROL | MASK_ALT | MASK_SHIFT;
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
diff --git a/indra/llwindow/llkeyboard.h b/indra/llwindow/llkeyboard.h
index 2800b9fb60..83ce6e5b04 100644
--- a/indra/llwindow/llkeyboard.h
+++ b/indra/llwindow/llkeyboard.h
@@ -69,19 +69,19 @@ public:
 
     F32             getCurKeyElapsedTime()  { return getKeyDown(mCurScanKey) ? getKeyElapsedTime( mCurScanKey ) : 0.f; }
     F32             getCurKeyElapsedFrameCount()    { return getKeyDown(mCurScanKey) ? (F32)getKeyElapsedFrameCount( mCurScanKey ) : 0.f; }
-    BOOL            getKeyDown(const KEY key) { return mKeyLevel[key]; }
-    BOOL            getKeyRepeated(const KEY key) { return mKeyRepeated[key]; }
+    bool            getKeyDown(const KEY key) { return mKeyLevel[key]; }
+    bool            getKeyRepeated(const KEY key) { return mKeyRepeated[key]; }
 
-    BOOL            translateKey(const NATIVE_KEY_TYPE os_key, KEY *translated_key);
+    bool            translateKey(const NATIVE_KEY_TYPE os_key, KEY *translated_key);
     NATIVE_KEY_TYPE     inverseTranslateKey(const KEY translated_key);
-    BOOL            handleTranslatedKeyUp(KEY translated_key, U32 translated_mask);     // Translated into "Linden" keycodes
-    BOOL            handleTranslatedKeyDown(KEY translated_key, U32 translated_mask);   // Translated into "Linden" keycodes
+    bool            handleTranslatedKeyUp(KEY translated_key, U32 translated_mask);     // Translated into "Linden" keycodes
+    bool            handleTranslatedKeyDown(KEY translated_key, U32 translated_mask);   // Translated into "Linden" keycodes
 
-    virtual BOOL    handleKeyUp(const NATIVE_KEY_TYPE key, MASK mask) = 0;
-    virtual BOOL    handleKeyDown(const NATIVE_KEY_TYPE key, MASK mask) = 0;
+    virtual bool    handleKeyUp(const NATIVE_KEY_TYPE key, MASK mask) = 0;
+    virtual bool    handleKeyDown(const NATIVE_KEY_TYPE key, MASK mask) = 0;
 
 #if defined(LL_DARWIN) && !defined(LL_SDL)
-    // We only actually use this for OS X.
+    // We only actually use this for macOS.
     virtual void    handleModifier(MASK mask) = 0;
 #endif // LL_DARWIN
 
@@ -91,14 +91,14 @@ public:
     virtual void    scanKeyboard() = 0;                                                         // scans keyboard, calls functions as necessary
     // Mac must differentiate between Command = Control for keyboard events
     // and Command != Control for mouse events.
-    virtual MASK    currentMask(BOOL for_mouse_event) = 0;
+    virtual MASK    currentMask(bool for_mouse_event) = 0;
     virtual KEY     currentKey() { return mCurTranslatedKey; }
 
     EKeyboardInsertMode getInsertMode() { return mInsertMode; }
     void toggleInsertMode();
 
-    static BOOL     maskFromString(const std::string& str, MASK *mask);     // False on failure
-    static BOOL     keyFromString(const std::string& str, KEY *key);            // False on failure
+    static bool     maskFromString(const std::string& str, MASK *mask);     // False on failure
+    static bool     keyFromString(const std::string& str, KEY *key);            // False on failure
     static std::string stringFromKey(KEY key, bool translate = true);
     static std::string stringFromMouse(EMouseClickType click, bool translate = true);
     static std::string stringFromAccelerator( MASK accel_mask ); // separated for convinience, returns with "+": "Shift+" or "Shift+Alt+"...
@@ -121,10 +121,10 @@ protected:
 
     LLTimer         mKeyLevelTimer[KEY_COUNT];  // Time since level was set
     S32             mKeyLevelFrameCount[KEY_COUNT]; // Frames since level was set
-    BOOL            mKeyLevel[KEY_COUNT];       // Levels
-    BOOL            mKeyRepeated[KEY_COUNT];    // Key was repeated
-    BOOL            mKeyUp[KEY_COUNT];          // Up edge
-    BOOL            mKeyDown[KEY_COUNT];        // Down edge
+    bool            mKeyLevel[KEY_COUNT];       // Levels
+    bool            mKeyRepeated[KEY_COUNT];    // Key was repeated
+    bool            mKeyUp[KEY_COUNT];          // Up edge
+    bool            mKeyDown[KEY_COUNT];        // Down edge
     KEY             mCurTranslatedKey;
     KEY             mCurScanKey;        // Used during the scanKeyboard()
 
diff --git a/indra/llwindow/llkeyboardheadless.cpp b/indra/llwindow/llkeyboardheadless.cpp
index 265d7e6c76..6f8c829dd5 100644
--- a/indra/llwindow/llkeyboardheadless.cpp
+++ b/indra/llwindow/llkeyboardheadless.cpp
@@ -38,7 +38,7 @@ void LLKeyboardHeadless::resetMaskKeys()
 
 
 
-MASK LLKeyboardHeadless::currentMask(BOOL for_mouse_event)
+MASK LLKeyboardHeadless::currentMask(bool for_mouse_event)
 { return MASK_NONE; }
 
 #ifdef LL_DARWIN
@@ -65,8 +65,8 @@ void LLKeyboardHeadless::scanKeyboard()
     // Reset edges for next frame
     for (S32 key = 0; key < KEY_COUNT; key++)
     {
-        mKeyUp[key] = FALSE;
-        mKeyDown[key] = FALSE;
+        mKeyUp[key] = false;
+        mKeyDown[key] = false;
         if (mKeyLevel[key])
         {
             mKeyLevelFrameCount[key]++;
diff --git a/indra/llwindow/llkeyboardheadless.h b/indra/llwindow/llkeyboardheadless.h
index 595f824872..439abaf25b 100644
--- a/indra/llwindow/llkeyboardheadless.h
+++ b/indra/llwindow/llkeyboardheadless.h
@@ -36,14 +36,14 @@ public:
     /*virtual*/ ~LLKeyboardHeadless() {};
 
 #ifndef LL_SDL
-    /*virtual*/ BOOL    handleKeyUp(const U16 key, MASK mask) { return FALSE; }
-    /*virtual*/ BOOL    handleKeyDown(const U16 key, MASK mask) { return FALSE; }
+    /*virtual*/ bool    handleKeyUp(const U16 key, MASK mask) { return false; }
+    /*virtual*/ bool    handleKeyDown(const U16 key, MASK mask) { return false; }
 #else
-    /*virtual*/ BOOL    handleKeyUp(const U32 key, MASK mask) { return FALSE; }
-    /*virtual*/ BOOL    handleKeyDown(const U32 key, MASK mask) { return FALSE; }
+    /*virtual*/ bool    handleKeyUp(const U32 key, MASK mask) { return false; }
+    /*virtual*/ bool    handleKeyDown(const U32 key, MASK mask) { return false; }
 #endif
     /*virtual*/ void    resetMaskKeys();
-    /*virtual*/ MASK    currentMask(BOOL for_mouse_event);
+    /*virtual*/ MASK    currentMask(bool for_mouse_event);
     /*virtual*/ void    scanKeyboard();
 #ifdef LL_DARWIN
     /*virtual*/ void    handleModifier(MASK mask);
diff --git a/indra/llwindow/llkeyboardmacosx.cpp b/indra/llwindow/llkeyboardmacosx.cpp
index a1aeb2e5e4..89ff7c6d3f 100644
--- a/indra/llwindow/llkeyboardmacosx.cpp
+++ b/indra/llwindow/llkeyboardmacosx.cpp
@@ -172,22 +172,22 @@ void LLKeyboardMacOSX::resetMaskKeys()
 
     if(mask & MAC_SHIFT_KEY)
     {
-        mKeyLevel[KEY_SHIFT] = TRUE;
+        mKeyLevel[KEY_SHIFT] = true;
     }
 
     if(mask & MAC_CTRL_KEY)
     {
-        mKeyLevel[KEY_CONTROL] = TRUE;
+        mKeyLevel[KEY_CONTROL] = true;
     }
 
     if(mask & MAC_ALT_KEY)
     {
-        mKeyLevel[KEY_ALT] = TRUE;
+        mKeyLevel[KEY_ALT] = true;
     }
 }
 
 /*
-static BOOL translateKeyMac(const U16 key, const U32 mask, KEY &outKey, U32 &outMask)
+static bool translateKeyMac(const U16 key, const U32 mask, KEY &outKey, U32 &outMask)
 {
     // Translate the virtual keycode into the keycodes the keyboard system expects.
     U16 virtualKey = (mask >> 24) & 0x0000007F;
@@ -226,11 +226,11 @@ MASK LLKeyboardMacOSX::updateModifiers(const U32 mask)
     return out_mask;
 }
 
-BOOL LLKeyboardMacOSX::handleKeyDown(const U16 key, const U32 mask)
+bool LLKeyboardMacOSX::handleKeyDown(const U16 key, const U32 mask)
 {
     KEY     translated_key = 0;
     U32     translated_mask = 0;
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     translated_mask = updateModifiers(mask);
 
@@ -243,11 +243,11 @@ BOOL LLKeyboardMacOSX::handleKeyDown(const U16 key, const U32 mask)
 }
 
 
-BOOL LLKeyboardMacOSX::handleKeyUp(const U16 key, const U32 mask)
+bool LLKeyboardMacOSX::handleKeyUp(const U16 key, const U32 mask)
 {
     KEY     translated_key = 0;
     U32     translated_mask = 0;
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     translated_mask = updateModifiers(mask);
 
@@ -259,7 +259,7 @@ BOOL LLKeyboardMacOSX::handleKeyUp(const U16 key, const U32 mask)
     return handled;
 }
 
-MASK LLKeyboardMacOSX::currentMask(BOOL for_mouse_event)
+MASK LLKeyboardMacOSX::currentMask(bool for_mouse_event)
 {
     MASK result = MASK_NONE;
     U32 mask = getModifiers();
@@ -295,8 +295,8 @@ void LLKeyboardMacOSX::scanKeyboard()
     // Reset edges for next frame
     for (key = 0; key < KEY_COUNT; key++)
     {
-        mKeyUp[key] = FALSE;
-        mKeyDown[key] = FALSE;
+        mKeyUp[key] = false;
+        mKeyDown[key] = false;
         if (mKeyLevel[key])
         {
             mKeyLevelFrameCount[key]++;
@@ -304,7 +304,7 @@ void LLKeyboardMacOSX::scanKeyboard()
     }
 }
 
-BOOL LLKeyboardMacOSX::translateNumpadKey( const U16 os_key, KEY *translated_key )
+bool LLKeyboardMacOSX::translateNumpadKey( const U16 os_key, KEY *translated_key )
 {
     return translateKey(os_key, translated_key);
 }
diff --git a/indra/llwindow/llkeyboardmacosx.h b/indra/llwindow/llkeyboardmacosx.h
index d6895f684d..92ab5c9a85 100644
--- a/indra/llwindow/llkeyboardmacosx.h
+++ b/indra/llwindow/llkeyboardmacosx.h
@@ -44,17 +44,17 @@ public:
     LLKeyboardMacOSX();
     /*virtual*/ ~LLKeyboardMacOSX() {};
 
-    /*virtual*/ BOOL    handleKeyUp(const U16 key, MASK mask);
-    /*virtual*/ BOOL    handleKeyDown(const U16 key, MASK mask);
+    /*virtual*/ bool    handleKeyUp(const U16 key, MASK mask);
+    /*virtual*/ bool    handleKeyDown(const U16 key, MASK mask);
     /*virtual*/ void    resetMaskKeys();
-    /*virtual*/ MASK    currentMask(BOOL for_mouse_event);
+    /*virtual*/ MASK    currentMask(bool for_mouse_event);
     /*virtual*/ void    scanKeyboard();
     /*virtual*/ void    handleModifier(MASK mask);
 
 protected:
     MASK    updateModifiers(const U32 mask);
-    void    setModifierKeyLevel( KEY key, BOOL new_state );
-    BOOL    translateNumpadKey( const U16 os_key, KEY *translated_key );
+    void    setModifierKeyLevel( KEY key, bool new_state );
+    bool    translateNumpadKey( const U16 os_key, KEY *translated_key );
     U16     inverseTranslateNumpadKey(const KEY translated_key);
 private:
     std::map<U16, KEY> mTranslateNumpadMap;  // special map for translating OS keys to numpad keys
diff --git a/indra/llwindow/llkeyboardsdl.cpp b/indra/llwindow/llkeyboardsdl.cpp
index cb6df9401d..72b4577276 100644
--- a/indra/llwindow/llkeyboardsdl.cpp
+++ b/indra/llwindow/llkeyboardsdl.cpp
@@ -162,7 +162,7 @@ void LLKeyboardSDL::resetMaskKeys()
 
     if(mask & KMOD_SHIFT)
     {
-        mKeyLevel[KEY_SHIFT] = TRUE;
+        mKeyLevel[KEY_SHIFT] = true;
     }
 
     if(mask & (KMOD_CTRL
@@ -171,12 +171,12 @@ void LLKeyboardSDL::resetMaskKeys()
 #endif
         ))
     {
-        mKeyLevel[KEY_CONTROL] = TRUE;
+        mKeyLevel[KEY_CONTROL] = true;
     }
 
     if(mask & KMOD_ALT)
     {
-        mKeyLevel[KEY_ALT] = TRUE;
+        mKeyLevel[KEY_ALT] = true;
     }
 }
 
@@ -234,12 +234,12 @@ static U32 adjustNativekeyFromUnhandledMask(const U32 key, const U32 mask)
 }
 
 
-BOOL LLKeyboardSDL::handleKeyDown(const U32 key, const U32 mask)
+bool LLKeyboardSDL::handleKeyDown(const U32 key, const U32 mask)
 {
     U32 adjusted_nativekey;
     KEY translated_key = 0;
     U32 translated_mask = MASK_NONE;
-    BOOL handled = FALSE;
+    bool    handled = false;
 
     adjusted_nativekey = adjustNativekeyFromUnhandledMask(key, mask);
 
@@ -254,12 +254,12 @@ BOOL LLKeyboardSDL::handleKeyDown(const U32 key, const U32 mask)
 }
 
 
-BOOL LLKeyboardSDL::handleKeyUp(const U32 key, const U32 mask)
+bool LLKeyboardSDL::handleKeyUp(const U32 key, const U32 mask)
 {
     U32 adjusted_nativekey;
     KEY translated_key = 0;
     U32 translated_mask = MASK_NONE;
-    BOOL handled = FALSE;
+    bool    handled = false;
 
     adjusted_nativekey = adjustNativekeyFromUnhandledMask(key, mask);
 
@@ -273,7 +273,7 @@ BOOL LLKeyboardSDL::handleKeyUp(const U32 key, const U32 mask)
     return handled;
 }
 
-MASK LLKeyboardSDL::currentMask(BOOL for_mouse_event)
+MASK LLKeyboardSDL::currentMask(bool for_mouse_event)
 {
     MASK result = MASK_NONE;
     SDL_Keymod mask = SDL_GetModState();
@@ -312,8 +312,8 @@ void LLKeyboardSDL::scanKeyboard()
     // Reset edges for next frame
     for (S32 key = 0; key < KEY_COUNT; key++)
     {
-        mKeyUp[key] = FALSE;
-        mKeyDown[key] = FALSE;
+        mKeyUp[key] = false;
+        mKeyDown[key] = false;
         if (mKeyLevel[key])
         {
             mKeyLevelFrameCount[key]++;
@@ -322,7 +322,7 @@ void LLKeyboardSDL::scanKeyboard()
 }
 
 
-BOOL LLKeyboardSDL::translateNumpadKey( const U32 os_key, KEY *translated_key)
+bool LLKeyboardSDL::translateNumpadKey( const U32 os_key, KEY *translated_key)
 {
     return translateKey(os_key, translated_key);
 }
diff --git a/indra/llwindow/llkeyboardsdl.h b/indra/llwindow/llkeyboardsdl.h
index 962ff5884b..3af098c4d1 100644
--- a/indra/llwindow/llkeyboardsdl.h
+++ b/indra/llwindow/llkeyboardsdl.h
@@ -38,16 +38,16 @@ public:
     LLKeyboardSDL();
     /*virtual*/ ~LLKeyboardSDL() {};
 
-    /*virtual*/ BOOL    handleKeyUp(const U32 key, MASK mask);
-    /*virtual*/ BOOL    handleKeyDown(const U32 key, MASK mask);
+    /*virtual*/ bool    handleKeyUp(const U32 key, MASK mask);
+    /*virtual*/ bool    handleKeyDown(const U32 key, MASK mask);
     /*virtual*/ void    resetMaskKeys();
-    /*virtual*/ MASK    currentMask(BOOL for_mouse_event);
+    /*virtual*/ MASK    currentMask(bool for_mouse_event);
     /*virtual*/ void    scanKeyboard();
 
 protected:
     MASK    updateModifiers(const U32 mask);
-    void    setModifierKeyLevel( KEY key, BOOL new_state );
-    BOOL    translateNumpadKey( const U32 os_key, KEY *translated_key );
+    void    setModifierKeyLevel( KEY key, bool new_state );
+    bool    translateNumpadKey( const U32 os_key, KEY *translated_key );
     U16 inverseTranslateNumpadKey(const KEY translated_key);
 private:
     std::map<U32, KEY> mTranslateNumpadMap;  // special map for translating OS keys to numpad keys
diff --git a/indra/llwindow/llkeyboardwin32.cpp b/indra/llwindow/llkeyboardwin32.cpp
index 4934e21d55..ec0055fe60 100644
--- a/indra/llwindow/llkeyboardwin32.cpp
+++ b/indra/llwindow/llkeyboardwin32.cpp
@@ -152,22 +152,22 @@ void LLKeyboardWin32::resetMaskKeys()
     // bit to indicate that the key is down.
     if (GetAsyncKeyState(VK_SHIFT) & 0x8000)
     {
-        mKeyLevel[KEY_SHIFT] = TRUE;
+        mKeyLevel[KEY_SHIFT] = true;
     }
 
     if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
     {
-        mKeyLevel[KEY_CONTROL] = TRUE;
+        mKeyLevel[KEY_CONTROL] = true;
     }
 
     if (GetAsyncKeyState(VK_MENU) & 0x8000)
     {
-        mKeyLevel[KEY_ALT] = TRUE;
+        mKeyLevel[KEY_ALT] = true;
     }
 }
 
 
-//void LLKeyboardWin32::setModifierKeyLevel( KEY key, BOOL new_state )
+//void LLKeyboardWin32::setModifierKeyLevel( KEY key, bool new_state )
 //{
 //  if( mKeyLevel[key] != new_state )
 //  {
@@ -191,17 +191,17 @@ MASK LLKeyboardWin32::updateModifiers()
     // (keydown encoded in high order bit of short)
     mKeyLevel[KEY_CAPSLOCK] = (GetKeyState(VK_CAPITAL) & 0x0001) != 0; // Low order bit carries the toggle state.
     // Get mask for keyboard events
-    MASK mask = currentMask(FALSE);
+    MASK mask = currentMask(false);
     return mask;
 }
 
 
 // mask is ignored, except for extended flag -- we poll the modifier keys for the other flags
-BOOL LLKeyboardWin32::handleKeyDown(const U16 key, MASK mask)
+bool LLKeyboardWin32::handleKeyDown(const U16 key, MASK mask)
 {
     KEY     translated_key;
     U32     translated_mask;
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     translated_mask = updateModifiers();
 
@@ -214,11 +214,11 @@ BOOL LLKeyboardWin32::handleKeyDown(const U16 key, MASK mask)
 }
 
 // mask is ignored, except for extended flag -- we poll the modifier keys for the other flags
-BOOL LLKeyboardWin32::handleKeyUp(const U16 key, MASK mask)
+bool LLKeyboardWin32::handleKeyUp(const U16 key, MASK mask)
 {
     KEY     translated_key;
     U32     translated_mask;
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     translated_mask = updateModifiers();
 
@@ -231,7 +231,7 @@ BOOL LLKeyboardWin32::handleKeyUp(const U16 key, MASK mask)
 }
 
 
-MASK LLKeyboardWin32::currentMask(BOOL)
+MASK LLKeyboardWin32::currentMask(bool)
 {
     MASK mask = MASK_NONE;
 
@@ -263,8 +263,8 @@ void LLKeyboardWin32::scanKeyboard()
     // Reset edges for next frame
     for (key = 0; key < KEY_COUNT; key++)
     {
-        mKeyUp[key] = FALSE;
-        mKeyDown[key] = FALSE;
+        mKeyUp[key] = false;
+        mKeyDown[key] = false;
         if (mKeyLevel[key])
         {
             mKeyLevelFrameCount[key]++;
@@ -272,7 +272,7 @@ void LLKeyboardWin32::scanKeyboard()
     }
 }
 
-BOOL LLKeyboardWin32::translateExtendedKey(const U16 os_key, const MASK mask, KEY *translated_key)
+bool LLKeyboardWin32::translateExtendedKey(const U16 os_key, const MASK mask, KEY *translated_key)
 {
     return translateKey(os_key, translated_key);
 }
diff --git a/indra/llwindow/llkeyboardwin32.h b/indra/llwindow/llkeyboardwin32.h
index 838566d69c..d0dfc5cfdd 100644
--- a/indra/llwindow/llkeyboardwin32.h
+++ b/indra/llwindow/llkeyboardwin32.h
@@ -39,17 +39,17 @@ public:
     LLKeyboardWin32();
     /*virtual*/ ~LLKeyboardWin32() {};
 
-    /*virtual*/ BOOL    handleKeyUp(const U16 key, MASK mask);
-    /*virtual*/ BOOL    handleKeyDown(const U16 key, MASK mask);
+    /*virtual*/ bool    handleKeyUp(const U16 key, MASK mask);
+    /*virtual*/ bool    handleKeyDown(const U16 key, MASK mask);
     /*virtual*/ void    resetMaskKeys();
-    /*virtual*/ MASK    currentMask(BOOL for_mouse_event);
+    /*virtual*/ MASK    currentMask(bool for_mouse_event);
     /*virtual*/ void    scanKeyboard();
-    BOOL                translateExtendedKey(const U16 os_key, const MASK mask, KEY *translated_key);
+    bool                translateExtendedKey(const U16 os_key, const MASK mask, KEY *translated_key);
     U16                 inverseTranslateExtendedKey(const KEY translated_key);
 
 protected:
     MASK    updateModifiers();
-    //void  setModifierKeyLevel( KEY key, BOOL new_state );
+    //void  setModifierKeyLevel( KEY key, bool new_state );
 private:
     std::map<U16, KEY> mTranslateNumpadMap;
     std::map<KEY, U16> mInvTranslateNumpadMap;
diff --git a/indra/llwindow/llmousehandler.cpp b/indra/llwindow/llmousehandler.cpp
index 62ad406967..eeceab502a 100644
--- a/indra/llwindow/llmousehandler.cpp
+++ b/indra/llwindow/llmousehandler.cpp
@@ -27,9 +27,9 @@
 #include "llmousehandler.h"
 
 //virtual
-BOOL LLMouseHandler::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, BOOL down)
+bool LLMouseHandler::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, bool down)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     if (down)
     {
         switch (clicktype)
diff --git a/indra/llwindow/llmousehandler.h b/indra/llwindow/llmousehandler.h
index dea28a0fc3..565d7bed70 100644
--- a/indra/llwindow/llmousehandler.h
+++ b/indra/llwindow/llmousehandler.h
@@ -47,19 +47,19 @@ public:
         SHOW_ALWAYS,
     } EShowToolTip;
 
-    virtual BOOL    handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, BOOL down);
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask) = 0;
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask) = 0;
-    virtual BOOL    handleMiddleMouseDown(S32 x, S32 y, MASK mask) = 0;
-    virtual BOOL    handleMiddleMouseUp(S32 x, S32 y, MASK mask) = 0;
-    virtual BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask) = 0;
-    virtual BOOL    handleRightMouseUp(S32 x, S32 y, MASK mask) = 0;
-    virtual BOOL    handleDoubleClick(S32 x, S32 y, MASK mask) = 0;
+    virtual bool    handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, bool down);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask) = 0;
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask) = 0;
+    virtual bool    handleMiddleMouseDown(S32 x, S32 y, MASK mask) = 0;
+    virtual bool    handleMiddleMouseUp(S32 x, S32 y, MASK mask) = 0;
+    virtual bool    handleRightMouseDown(S32 x, S32 y, MASK mask) = 0;
+    virtual bool    handleRightMouseUp(S32 x, S32 y, MASK mask) = 0;
+    virtual bool    handleDoubleClick(S32 x, S32 y, MASK mask) = 0;
 
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask) = 0;
-    virtual BOOL    handleScrollWheel(S32 x, S32 y, S32 clicks) = 0;
-    virtual BOOL    handleScrollHWheel(S32 x, S32 y, S32 clicks) = 0;
-    virtual BOOL    handleToolTip(S32 x, S32 y, MASK mask) = 0;
+    virtual bool    handleHover(S32 x, S32 y, MASK mask) = 0;
+    virtual bool    handleScrollWheel(S32 x, S32 y, S32 clicks) = 0;
+    virtual bool    handleScrollHWheel(S32 x, S32 y, S32 clicks) = 0;
+    virtual bool    handleToolTip(S32 x, S32 y, MASK mask) = 0;
     virtual const std::string& getName() const = 0;
 
     virtual void    onMouseCaptureLost() = 0;
@@ -67,7 +67,7 @@ public:
     virtual void    screenPointToLocal(S32 screen_x, S32 screen_y, S32* local_x, S32* local_y) const = 0;
     virtual void    localPointToScreen(S32 local_x, S32 local_y, S32* screen_x, S32* screen_y) const = 0;
 
-    virtual BOOL hasMouseCapture() = 0;
+    virtual bool hasMouseCapture() = 0;
 };
 
 #endif
diff --git a/indra/llwindow/llpreeditor.h b/indra/llwindow/llpreeditor.h
index 943d70c3dd..492a3e9e88 100644
--- a/indra/llwindow/llpreeditor.h
+++ b/indra/llwindow/llpreeditor.h
@@ -34,7 +34,7 @@ class LLPreeditor
 public:
 
     typedef std::vector<S32> segment_lengths_t;
-    typedef std::vector<BOOL> standouts_t;
+    typedef std::deque<bool> standouts_t;
 
     // We don't delete against LLPreeditor, but compilers complain without this...
 
@@ -79,7 +79,7 @@ public:
     // Locations are relative to the app window and measured in GL coordinate space (before scaling.)
     // query_position is IN argument, and other three are OUT.
 
-    virtual BOOL getPreeditLocation(S32 query_position, LLCoordGL *coord, LLRect *bounds, LLRect *control) const = 0;
+    virtual bool getPreeditLocation(S32 query_position, LLCoordGL *coord, LLRect *bounds, LLRect *control) const = 0;
 
     // Get the size (height) of the current font used in this preeditor.
 
@@ -93,9 +93,9 @@ public:
     // Handle a UTF-32 char on this preeditor, i.e., add the character
     // to the contents.
     // This is a back door of the method of same name of LLWindowCallback.
-    // called_from_parent should be set to FALSE if calling through LLPreeditor.
+    // called_from_parent should be set to false if calling through LLPreeditor.
 
-    virtual BOOL handleUnicodeCharHere(llwchar uni_char) = 0;
+    virtual bool handleUnicodeCharHere(llwchar uni_char) = 0;
 };
 
 #endif
diff --git a/indra/llwindow/llwindow.cpp b/indra/llwindow/llwindow.cpp
index 6556bc09c6..325f1280b9 100644
--- a/indra/llwindow/llwindow.cpp
+++ b/indra/llwindow/llwindow.cpp
@@ -46,8 +46,8 @@
 // Globals
 //
 LLSplashScreen *gSplashScreenp = NULL;
-BOOL gDebugClicks = FALSE;
-BOOL gDebugWindowProc = FALSE;
+bool gDebugClicks = false;
+bool gDebugWindowProc = false;
 
 const S32 gURLProtocolWhitelistCount = 5;
 const std::string gURLProtocolWhitelist[] = { "secondlife:", "http:", "https:", "data:", "mailto:" };
@@ -63,10 +63,10 @@ const std::string gURLProtocolWhitelist[] = { "secondlife:", "http:", "https:",
 S32 OSMessageBox(const std::string& text, const std::string& caption, U32 type)
 {
     // Properly hide the splash screen when displaying the message box
-    BOOL was_visible = FALSE;
+    bool was_visible = false;
     if (LLSplashScreen::isVisible())
     {
-        was_visible = TRUE;
+        was_visible = true;
         LLSplashScreen::hide();
     }
 
@@ -97,9 +97,9 @@ S32 OSMessageBox(const std::string& text, const std::string& caption, U32 type)
 // LLWindow
 //
 
-LLWindow::LLWindow(LLWindowCallbacks* callbacks, BOOL fullscreen, U32 flags)
+LLWindow::LLWindow(LLWindowCallbacks* callbacks, bool fullscreen, U32 flags)
     : mCallbacks(callbacks),
-      mPostQuit(TRUE),
+      mPostQuit(true),
       mFullscreen(fullscreen),
       mFullscreenWidth(0),
       mFullscreenHeight(0),
@@ -109,13 +109,13 @@ LLWindow::LLWindow(LLWindowCallbacks* callbacks, BOOL fullscreen, U32 flags)
       mNumSupportedResolutions(0),
       mCurrentCursor(UI_CURSOR_ARROW),
       mNextCursor(UI_CURSOR_ARROW),
-      mCursorHidden(FALSE),
+      mCursorHidden(false),
       mBusyCount(0),
-      mIsMouseClipping(FALSE),
+      mIsMouseClipping(false),
       mMinWindowWidth(0),
       mMinWindowHeight(0),
       mSwapMethod(SWAP_METHOD_UNDEFINED),
-      mHideCursorPermanent(FALSE),
+      mHideCursorPermanent(false),
       mFlags(flags),
       mHighSurrogate(0),
       mRefreshRate(0)
@@ -127,15 +127,15 @@ LLWindow::~LLWindow()
 }
 
 //virtual
-BOOL LLWindow::isValid()
+bool LLWindow::isValid()
 {
-    return TRUE;
+    return true;
 }
 
 //virtual
-BOOL LLWindow::canDelete()
+bool LLWindow::canDelete()
 {
-    return TRUE;
+    return true;
 }
 
 //virtual
@@ -178,9 +178,9 @@ ECursorType LLWindow::getCursor() const
 }
 
 //virtual
-BOOL LLWindow::dialogColorPicker(F32 *r, F32 *g, F32 *b)
+bool LLWindow::dialogColorPicker(F32 *r, F32 *g, F32 *b)
 {
-    return FALSE;
+    return false;
 }
 
 void *LLWindow::getMediaWindow()
@@ -189,7 +189,7 @@ void *LLWindow::getMediaWindow()
     return getPlatformWindow();
 }
 
-BOOL LLWindow::setSize(LLCoordScreen size)
+bool LLWindow::setSize(LLCoordScreen size)
 {
     if (!getMaximized())
     {
@@ -199,7 +199,7 @@ BOOL LLWindow::setSize(LLCoordScreen size)
     return setSizeImpl(size);
 }
 
-BOOL LLWindow::setSize(LLCoordWindow size)
+bool LLWindow::setSize(LLCoordWindow size)
 {
     //HACK: we are inconsistently using minimum window dimensions
     // in this case, we are constraining the inner "client" rect and other times
@@ -241,19 +241,19 @@ void LLWindow::processMiscNativeEvents()
 }
 
 //virtual
-BOOL LLWindow::isPrimaryTextAvailable()
+bool LLWindow::isPrimaryTextAvailable()
 {
-    return FALSE; // no
+    return false; // no
 }
 //virtual
-BOOL LLWindow::pasteTextFromPrimary(LLWString &dst)
+bool LLWindow::pasteTextFromPrimary(LLWString &dst)
 {
-    return FALSE; // fail
+    return false; // fail
 }
 // virtual
-BOOL LLWindow::copyTextToPrimary(const LLWString &src)
+bool LLWindow::copyTextToPrimary(const LLWString &src)
 {
-    return FALSE; // fail
+    return false; // fail
 }
 
 // static
@@ -336,7 +336,7 @@ void LLWindow::handleUnicodeUTF16(U16 utf16, MASK mask)
 // static
 bool LLSplashScreen::isVisible()
 {
-    return gSplashScreenp ? true: false;
+    return gSplashScreenp;
 }
 
 // static
@@ -402,14 +402,13 @@ static std::set<LLWindow*> sWindowList;
 LLWindow* LLWindowManager::createWindow(
     LLWindowCallbacks* callbacks,
     const std::string& title, const std::string& name, S32 x, S32 y, S32 width, S32 height, U32 flags,
-    BOOL fullscreen,
-    BOOL clearBg,
-    BOOL enable_vsync,
-    BOOL use_gl,
-    BOOL ignore_pixel_depth,
+    bool fullscreen,
+    bool clearBg,
+    bool enable_vsync,
+    bool use_gl,
+    bool ignore_pixel_depth,
     U32 fsaa_samples,
     U32 max_cores,
-    U32 max_vram,
     F32 max_gl_version)
 {
     LLWindow* new_window = nullptr;
@@ -427,7 +426,7 @@ LLWindow* LLWindowManager::createWindow(
 #elif LL_WINDOWS
         new_window = new LLWindowWin32(callbacks,
             title, name, x, y, width, height, flags,
-            fullscreen, clearBg, enable_vsync, use_gl, ignore_pixel_depth, fsaa_samples, max_cores, max_vram, max_gl_version);
+            fullscreen, clearBg, enable_vsync, use_gl, ignore_pixel_depth, fsaa_samples, max_cores, max_gl_version);
 #elif LL_DARWIN
         new_window = new LLWindowMacOSX(callbacks,
             title, name, x, y, width, height, flags,
@@ -441,7 +440,7 @@ LLWindow* LLWindowManager::createWindow(
             fullscreen, clearBg, enable_vsync, use_gl, ignore_pixel_depth);
     }
 
-    if (FALSE == new_window->isValid())
+    if (false == new_window->isValid())
     {
         delete new_window;
         LL_WARNS() << "LLWindowManager::create() : Error creating window." << LL_ENDL;
@@ -451,13 +450,13 @@ LLWindow* LLWindowManager::createWindow(
     return new_window;
 }
 
-BOOL LLWindowManager::destroyWindow(LLWindow* window)
+bool LLWindowManager::destroyWindow(LLWindow* window)
 {
     if (sWindowList.find(window) == sWindowList.end())
     {
         LL_ERRS() << "LLWindowManager::destroyWindow() : Window pointer not valid, this window doesn't exist!"
             << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     window->close();
@@ -466,10 +465,10 @@ BOOL LLWindowManager::destroyWindow(LLWindow* window)
 
     delete window;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowManager::isWindowValid(LLWindow *window)
+bool LLWindowManager::isWindowValid(LLWindow *window)
 {
     return sWindowList.find(window) != sWindowList.end();
 }
diff --git a/indra/llwindow/llwindow.h b/indra/llwindow/llwindow.h
index aff9334cb6..5e06e665f3 100644
--- a/indra/llwindow/llwindow.h
+++ b/indra/llwindow/llwindow.h
@@ -63,21 +63,21 @@ public:
     virtual void show() = 0;
     virtual void hide() = 0;
     virtual void close() = 0;
-    virtual BOOL getVisible() = 0;
-    virtual BOOL getMinimized() = 0;
-    virtual BOOL getMaximized() = 0;
-    virtual BOOL maximize() = 0;
+    virtual bool getVisible() = 0;
+    virtual bool getMinimized() = 0;
+    virtual bool getMaximized() = 0;
+    virtual bool maximize() = 0;
     virtual void minimize() = 0;
     virtual void restore() = 0;
-    BOOL getFullscreen()    { return mFullscreen; };
-    virtual BOOL getPosition(LLCoordScreen *position) = 0;
-    virtual BOOL getSize(LLCoordScreen *size) = 0;
-    virtual BOOL getSize(LLCoordWindow *size) = 0;
-    virtual BOOL setPosition(LLCoordScreen position) = 0;
-    BOOL setSize(LLCoordScreen size);
-    BOOL setSize(LLCoordWindow size);
+    bool getFullscreen()    { return mFullscreen; };
+    virtual bool getPosition(LLCoordScreen *position) = 0;
+    virtual bool getSize(LLCoordScreen *size) = 0;
+    virtual bool getSize(LLCoordWindow *size) = 0;
+    virtual bool setPosition(LLCoordScreen position) = 0;
+    bool setSize(LLCoordScreen size);
+    bool setSize(LLCoordWindow size);
     virtual void setMinSize(U32 min_width, U32 min_height, bool enforce_immediately = true);
-    virtual BOOL switchContext(BOOL fullscreen, const LLCoordScreen &size, BOOL enable_vsync, const LLCoordScreen * const posp = NULL) = 0;
+    virtual bool switchContext(bool fullscreen, const LLCoordScreen &size, bool enable_vsync, const LLCoordScreen * const posp = NULL) = 0;
 
     //create a new GL context that shares a namespace with this Window's main GL context and make it current on the current thread
     // returns a pointer to be handed back to destroySharedConext/makeContextCurrent
@@ -90,14 +90,14 @@ public:
 
     virtual void toggleVSync(bool enable_vsync) = 0;
 
-    virtual BOOL setCursorPosition(LLCoordWindow position) = 0;
-    virtual BOOL getCursorPosition(LLCoordWindow *position) = 0;
+    virtual bool setCursorPosition(LLCoordWindow position) = 0;
+    virtual bool getCursorPosition(LLCoordWindow *position) = 0;
 #if LL_WINDOWS
-    virtual BOOL getCursorDelta(LLCoordCommon* delta) = 0;
+    virtual bool getCursorDelta(LLCoordCommon* delta) = 0;
 #endif
     virtual void showCursor() = 0;
     virtual void hideCursor() = 0;
-    virtual BOOL isCursorHidden() = 0;
+    virtual bool isCursorHidden() = 0;
     virtual void showCursorFromMouseMove() = 0;
     virtual void hideCursorUntilMouseMove() = 0;
 
@@ -124,22 +124,22 @@ public:
 
     virtual void captureMouse() = 0;
     virtual void releaseMouse() = 0;
-    virtual void setMouseClipping( BOOL b ) = 0;
+    virtual void setMouseClipping( bool b ) = 0;
 
-    virtual BOOL isClipboardTextAvailable() = 0;
-    virtual BOOL pasteTextFromClipboard(LLWString &dst) = 0;
-    virtual BOOL copyTextToClipboard(const LLWString &src) = 0;
+    virtual bool isClipboardTextAvailable() = 0;
+    virtual bool pasteTextFromClipboard(LLWString &dst) = 0;
+    virtual bool copyTextToClipboard(const LLWString &src) = 0;
 
-    virtual BOOL isPrimaryTextAvailable();
-    virtual BOOL pasteTextFromPrimary(LLWString &dst);
-    virtual BOOL copyTextToPrimary(const LLWString &src);
+    virtual bool isPrimaryTextAvailable();
+    virtual bool pasteTextFromPrimary(LLWString &dst);
+    virtual bool copyTextToPrimary(const LLWString &src);
 
     virtual void flashIcon(F32 seconds) = 0;
     virtual F32 getGamma() = 0;
-    virtual BOOL setGamma(const F32 gamma) = 0; // Set the gamma
+    virtual bool setGamma(const F32 gamma) = 0; // Set the gamma
     virtual void setFSAASamples(const U32 fsaa_samples) = 0; //set number of FSAA samples
     virtual U32  getFSAASamples() = 0;
-    virtual BOOL restoreGamma() = 0;            // Restore original gamma table (before updating gamma)
+    virtual bool restoreGamma() = 0;            // Restore original gamma table (before updating gamma)
     virtual ESwapMethod getSwapMethod() { return mSwapMethod; }
     virtual void processMiscNativeEvents();
     virtual void gatherInput() = 0;
@@ -151,12 +151,12 @@ public:
     // handy coordinate space conversion routines
     // NB: screen to window and vice verse won't work on width/height coordinate pairs,
     // as the conversion must take into account left AND right border widths, etc.
-    virtual BOOL convertCoords( LLCoordScreen from, LLCoordWindow *to) = 0;
-    virtual BOOL convertCoords( LLCoordWindow from, LLCoordScreen *to) = 0;
-    virtual BOOL convertCoords( LLCoordWindow from, LLCoordGL *to) = 0;
-    virtual BOOL convertCoords( LLCoordGL from, LLCoordWindow *to) = 0;
-    virtual BOOL convertCoords( LLCoordScreen from, LLCoordGL *to) = 0;
-    virtual BOOL convertCoords( LLCoordGL from, LLCoordScreen *to) = 0;
+    virtual bool convertCoords( LLCoordScreen from, LLCoordWindow *to) = 0;
+    virtual bool convertCoords( LLCoordWindow from, LLCoordScreen *to) = 0;
+    virtual bool convertCoords( LLCoordWindow from, LLCoordGL *to) = 0;
+    virtual bool convertCoords( LLCoordGL from, LLCoordWindow *to) = 0;
+    virtual bool convertCoords( LLCoordScreen from, LLCoordGL *to) = 0;
+    virtual bool convertCoords( LLCoordGL from, LLCoordScreen *to) = 0;
 
     // query supported resolutions
     virtual LLWindowResolution* getSupportedResolutions(S32 &num_resolutions) = 0;
@@ -164,15 +164,12 @@ public:
     virtual F32 getPixelAspectRatio() = 0;
     virtual void setNativeAspectRatio(F32 aspect) = 0;
 
-    // query VRAM usage
-    virtual U32 getAvailableVRAMMegabytes() = 0;
-
     virtual void beforeDialog() {}; // prepare to put up an OS dialog (if special measures are required, such as in fullscreen mode)
     virtual void afterDialog() {};  // undo whatever was done in beforeDialog()
 
     // opens system default color picker, modally
-    // Returns TRUE if valid color selected
-    virtual BOOL dialogColorPicker(F32 *r, F32 *g, F32 *b);
+    // Returns true if valid color selected
+    virtual bool dialogColorPicker(F32 *r, F32 *g, F32 *b);
 
 // return a platform-specific window reference (HWND on Windows, WindowRef on the Mac, Gtk window on Linux)
     virtual void *getPlatformWindow() = 0;
@@ -181,7 +178,7 @@ public:
     virtual void *getMediaWindow();
 
     // control platform's Language Text Input mechanisms.
-    virtual void allowLanguageTextInput(LLPreeditor *preeditor, BOOL b) {}
+    virtual void allowLanguageTextInput(LLPreeditor *preeditor, bool b) {}
     virtual void setLanguageTextInput( const LLCoordGL & pos ) {};
     virtual void updateLanguageTextInputArea() {}
     virtual void interruptLanguageTextInput() {}
@@ -209,21 +206,21 @@ public:
 
     virtual S32 getRefreshRate() { return mRefreshRate; }
 protected:
-    LLWindow(LLWindowCallbacks* callbacks, BOOL fullscreen, U32 flags);
+    LLWindow(LLWindowCallbacks* callbacks, bool fullscreen, U32 flags);
     virtual ~LLWindow();
     // Defaults to true
-    virtual BOOL isValid();
+    virtual bool isValid();
     // Defaults to true
-    virtual BOOL canDelete();
+    virtual bool canDelete();
 
-    virtual BOOL setSizeImpl(LLCoordScreen size) = 0;
-    virtual BOOL setSizeImpl(LLCoordWindow size) = 0;
+    virtual bool setSizeImpl(LLCoordScreen size) = 0;
+    virtual bool setSizeImpl(LLCoordWindow size) = 0;
 
 protected:
     LLWindowCallbacks*  mCallbacks;
 
-    BOOL        mPostQuit;      // should this window post a quit message when destroyed?
-    BOOL        mFullscreen;
+    bool        mPostQuit;      // should this window post a quit message when destroyed?
+    bool        mFullscreen;
     S32         mFullscreenWidth;
     S32         mFullscreenHeight;
     S32         mFullscreenBits;
@@ -232,11 +229,11 @@ protected:
     S32         mNumSupportedResolutions;
     ECursorType mCurrentCursor;
     ECursorType mNextCursor;
-    BOOL        mCursorHidden;
+    bool        mCursorHidden;
     S32         mBusyCount; // how deep is the "cursor busy" stack?
-    BOOL        mIsMouseClipping;  // Is this window currently clipping the mouse
+    bool        mIsMouseClipping;  // Is this window currently clipping the mouse
     ESwapMethod mSwapMethod;
-    BOOL        mHideCursorPermanent;
+    bool        mHideCursorPermanent;
     U32         mFlags;
     U16         mHighSurrogate;
     S32         mMinWindowWidth;
@@ -281,20 +278,20 @@ protected:
     virtual void updateImpl(const std::string& string) = 0;
     virtual void hideImpl() = 0;
 
-    static BOOL sVisible;
+    static bool sVisible;
 
 };
 
 // Platform-neutral for accessing the platform specific message box
 S32 OSMessageBox(const std::string& text, const std::string& caption, U32 type);
-const U32 OSMB_OK = 0;
-const U32 OSMB_OKCANCEL = 1;
-const U32 OSMB_YESNO = 2;
+constexpr U32 OSMB_OK = 0;
+constexpr U32 OSMB_OKCANCEL = 1;
+constexpr U32 OSMB_YESNO = 2;
 
-const S32 OSBTN_YES = 0;
-const S32 OSBTN_NO = 1;
-const S32 OSBTN_OK = 2;
-const S32 OSBTN_CANCEL = 3;
+constexpr S32 OSBTN_YES = 0;
+constexpr S32 OSBTN_NO = 1;
+constexpr S32 OSBTN_OK = 2;
+constexpr S32 OSBTN_CANCEL = 3;
 
 //
 // LLWindowManager
@@ -307,29 +304,26 @@ public:
         LLWindowCallbacks* callbacks,
         const std::string& title, const std::string& name, S32 x, S32 y, S32 width, S32 height,
         U32 flags = 0,
-        BOOL fullscreen = FALSE,
-        BOOL clearBg = FALSE,
-        BOOL enable_vsync = FALSE,
-        BOOL use_gl = TRUE,
-        BOOL ignore_pixel_depth = FALSE,
+        bool fullscreen = false,
+        bool clearBg = false,
+        bool enable_vsync = false,
+        bool use_gl = true,
+        bool ignore_pixel_depth = false,
         U32 fsaa_samples = 0,
         U32 max_cores = 0,
-        U32 max_vram = 0,
         F32 max_gl_version = 4.6f);
-    static BOOL destroyWindow(LLWindow* window);
-    static BOOL isWindowValid(LLWindow *window);
+    static bool destroyWindow(LLWindow* window);
+    static bool isWindowValid(LLWindow *window);
 };
 
 //
 // helper funcs
 //
-extern BOOL gDebugWindowProc;
+extern bool gDebugWindowProc;
 
 // Protocols, like "http" and "https" we support in URLs
 extern const S32 gURLProtocolWhitelistCount;
 extern const std::string gURLProtocolWhitelist[];
 //extern const std::string gURLProtocolWhitelistHandler[];
 
-void simpleEscapeString ( std::string& stringIn  );
-
 #endif // _LL_window_h_
diff --git a/indra/llwindow/llwindowcallbacks.cpp b/indra/llwindow/llwindowcallbacks.cpp
index ddf913045f..624ecd5030 100644
--- a/indra/llwindow/llwindowcallbacks.cpp
+++ b/indra/llwindow/llwindowcallbacks.cpp
@@ -32,39 +32,39 @@
 // LLWindowCallbacks
 //
 
-BOOL LLWindowCallbacks::handleTranslatedKeyDown(const KEY key, const MASK mask, BOOL repeated)
+bool LLWindowCallbacks::handleTranslatedKeyDown(const KEY key, const MASK mask, bool repeated)
 {
-    return FALSE;
+    return false;
 }
 
 
-BOOL LLWindowCallbacks::handleTranslatedKeyUp(const KEY key, const MASK mask)
+bool LLWindowCallbacks::handleTranslatedKeyUp(const KEY key, const MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
-void LLWindowCallbacks::handleScanKey(KEY key, BOOL key_down, BOOL key_up, BOOL key_level)
+void LLWindowCallbacks::handleScanKey(KEY key, bool key_down, bool key_up, bool key_level)
 {
 }
 
-BOOL LLWindowCallbacks::handleUnicodeChar(llwchar uni_char, MASK mask)
+bool LLWindowCallbacks::handleUnicodeChar(llwchar uni_char, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleUnicodeString(char *uni_str, bool editing)
+bool LLWindowCallbacks::handleUnicodeString(char *uni_str, bool editing)
 {
 	return FALSE;
 }
 
-BOOL LLWindowCallbacks::handleMouseDown(LLWindow *window, const LLCoordGL pos, MASK mask)
+bool LLWindowCallbacks::handleMouseDown(LLWindow *window, const LLCoordGL pos, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleMouseUp(LLWindow *window, const LLCoordGL pos, MASK mask)
+bool LLWindowCallbacks::handleMouseUp(LLWindow *window, const LLCoordGL pos, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
 void LLWindowCallbacks::handleMouseLeave(LLWindow *window)
@@ -72,54 +72,54 @@ void LLWindowCallbacks::handleMouseLeave(LLWindow *window)
     return;
 }
 
-BOOL LLWindowCallbacks::handleCloseRequest(LLWindow *window)
+bool LLWindowCallbacks::handleCloseRequest(LLWindow *window)
 {
     //allow the window to close
-    return TRUE;
+    return true;
 }
 
 void LLWindowCallbacks::handleQuit(LLWindow *window)
 {
 }
 
-BOOL LLWindowCallbacks::handleRightMouseDown(LLWindow *window, const LLCoordGL pos, MASK mask)
+bool LLWindowCallbacks::handleRightMouseDown(LLWindow *window, const LLCoordGL pos, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleRightMouseUp(LLWindow *window, const LLCoordGL pos, MASK mask)
+bool LLWindowCallbacks::handleRightMouseUp(LLWindow *window, const LLCoordGL pos, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleMiddleMouseDown(LLWindow *window, const LLCoordGL pos, MASK mask)
+bool LLWindowCallbacks::handleMiddleMouseDown(LLWindow *window, const LLCoordGL pos, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleMiddleMouseUp(LLWindow *window, const LLCoordGL pos, MASK mask)
+bool LLWindowCallbacks::handleMiddleMouseUp(LLWindow *window, const LLCoordGL pos, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleOtherMouseDown(LLWindow *window, const LLCoordGL pos, MASK mask, S32 button)
+bool LLWindowCallbacks::handleOtherMouseDown(LLWindow *window, const LLCoordGL pos, MASK mask, S32 button)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleOtherMouseUp(LLWindow *window, const LLCoordGL pos, MASK mask, S32 button)
+bool LLWindowCallbacks::handleOtherMouseUp(LLWindow *window, const LLCoordGL pos, MASK mask, S32 button)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleActivate(LLWindow *window, BOOL activated)
+bool LLWindowCallbacks::handleActivate(LLWindow *window, bool activated)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleActivateApp(LLWindow *window, BOOL activating)
+bool LLWindowCallbacks::handleActivateApp(LLWindow *window, bool activating)
 {
-    return FALSE;
+    return false;
 }
 
 void LLWindowCallbacks::handleMouseMove(LLWindow *window, const LLCoordGL pos, MASK mask)
@@ -155,15 +155,15 @@ void LLWindowCallbacks::handleMenuSelect(LLWindow *window, const S32 menu_item)
 {
 }
 
-BOOL LLWindowCallbacks::handlePaint(LLWindow *window, const S32 x, const S32 y,
+bool LLWindowCallbacks::handlePaint(LLWindow *window, const S32 x, const S32 y,
                                     const S32 width, const S32 height)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleDoubleClick(LLWindow *window, const LLCoordGL pos, MASK mask)
+bool LLWindowCallbacks::handleDoubleClick(LLWindow *window, const LLCoordGL pos, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
 void LLWindowCallbacks::handleWindowBlock(LLWindow *window)
@@ -183,24 +183,24 @@ LLWindowCallbacks::DragNDropResult LLWindowCallbacks::handleDragNDrop(LLWindow *
     return LLWindowCallbacks::DND_NONE;
 }
 
-BOOL LLWindowCallbacks::handleTimerEvent(LLWindow *window)
+bool LLWindowCallbacks::handleTimerEvent(LLWindow *window)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleDeviceChange(LLWindow *window)
+bool LLWindowCallbacks::handleDeviceChange(LLWindow *window)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleDPIChanged(LLWindow *window, F32 ui_scale_factor, S32 window_width, S32 window_height)
+bool LLWindowCallbacks::handleDPIChanged(LLWindow *window, F32 ui_scale_factor, S32 window_width, S32 window_height)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowCallbacks::handleWindowDidChangeScreen(LLWindow *window)
+bool LLWindowCallbacks::handleWindowDidChangeScreen(LLWindow *window)
 {
-    return FALSE;
+    return false;
 }
 
 void LLWindowCallbacks::handlePingWatchdog(LLWindow *window, const char * msg)
diff --git a/indra/llwindow/llwindowcallbacks.h b/indra/llwindow/llwindowcallbacks.h
index b7a843e748..74660e1705 100644
--- a/indra/llwindow/llwindowcallbacks.h
+++ b/indra/llwindow/llwindowcallbacks.h
@@ -33,27 +33,27 @@ class LLWindowCallbacks
 {
 public:
     virtual ~LLWindowCallbacks() {}
-    virtual BOOL handleTranslatedKeyDown(KEY key,  MASK mask, BOOL repeated);
-    virtual BOOL handleTranslatedKeyUp(KEY key,  MASK mask);
-    virtual void handleScanKey(KEY key, BOOL key_down, BOOL key_up, BOOL key_level);
-    virtual BOOL handleUnicodeChar(llwchar uni_char, MASK mask);
-    virtual BOOL handleUnicodeString(char *uni_str, bool editing);
+    virtual bool handleTranslatedKeyDown(KEY key,  MASK mask, bool repeated);
+    virtual bool handleTranslatedKeyUp(KEY key,  MASK mask);
+    virtual void handleScanKey(KEY key, bool key_down, bool key_up, bool key_level);
+    virtual bool handleUnicodeChar(llwchar uni_char, MASK mask);
+    virtual bool handleUnicodeString(char *uni_str, bool editing);
 
-    virtual BOOL handleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
-    virtual BOOL handleMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask);
+    virtual bool handleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
+    virtual bool handleMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask);
     virtual void handleMouseLeave(LLWindow *window);
-    // return TRUE to allow window to close, which will then cause handleQuit to be called
-    virtual BOOL handleCloseRequest(LLWindow *window);
+    // return true to allow window to close, which will then cause handleQuit to be called
+    virtual bool handleCloseRequest(LLWindow *window);
     // window is about to be destroyed, clean up your business
     virtual void handleQuit(LLWindow *window);
-    virtual BOOL handleRightMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
-    virtual BOOL handleRightMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask);
-    virtual BOOL handleMiddleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
-    virtual BOOL handleMiddleMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask);
-    virtual BOOL handleOtherMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask, S32 button);
-    virtual BOOL handleOtherMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask, S32 button);
-    virtual BOOL handleActivate(LLWindow *window, BOOL activated);
-    virtual BOOL handleActivateApp(LLWindow *window, BOOL activating);
+    virtual bool handleRightMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
+    virtual bool handleRightMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask);
+    virtual bool handleMiddleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
+    virtual bool handleMiddleMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask);
+    virtual bool handleOtherMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask, S32 button);
+    virtual bool handleOtherMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask, S32 button);
+    virtual bool handleActivate(LLWindow *window, bool activated);
+    virtual bool handleActivateApp(LLWindow *window, bool activating);
     virtual void handleMouseMove(LLWindow *window,  LLCoordGL pos, MASK mask);
     virtual void handleMouseDragged(LLWindow *window,  LLCoordGL pos, MASK mask);
     virtual void handleScrollWheel(LLWindow *window,  S32 clicks);
@@ -62,15 +62,15 @@ public:
     virtual void handleFocus(LLWindow *window);
     virtual void handleFocusLost(LLWindow *window);
     virtual void handleMenuSelect(LLWindow *window,  S32 menu_item);
-    virtual BOOL handlePaint(LLWindow *window,  S32 x,  S32 y,  S32 width,  S32 height);
-    virtual BOOL handleDoubleClick(LLWindow *window,  LLCoordGL pos, MASK mask);            // double-click of left mouse button
+    virtual bool handlePaint(LLWindow *window,  S32 x,  S32 y,  S32 width,  S32 height);
+    virtual bool handleDoubleClick(LLWindow *window,  LLCoordGL pos, MASK mask);            // double-click of left mouse button
     virtual void handleWindowBlock(LLWindow *window);                           // window is taking over CPU for a while
     virtual void handleWindowUnblock(LLWindow *window);                         // window coming back after taking over CPU for a while
     virtual void handleDataCopy(LLWindow *window, S32 data_type, void *data);
-    virtual BOOL handleTimerEvent(LLWindow *window);
-    virtual BOOL handleDeviceChange(LLWindow *window);
-    virtual BOOL handleDPIChanged(LLWindow *window, F32 ui_scale_factor, S32 window_width, S32 window_height);
-    virtual BOOL handleWindowDidChangeScreen(LLWindow *window);
+    virtual bool handleTimerEvent(LLWindow *window);
+    virtual bool handleDeviceChange(LLWindow *window);
+    virtual bool handleDPIChanged(LLWindow *window, F32 ui_scale_factor, S32 window_width, S32 window_height);
+    virtual bool handleWindowDidChangeScreen(LLWindow *window);
 
     enum DragNDropAction {
         DNDA_START_TRACKING = 0,// Start tracking an incoming drag
diff --git a/indra/llwindow/llwindowheadless.cpp b/indra/llwindow/llwindowheadless.cpp
index bbeb710445..55e5cfd51e 100644
--- a/indra/llwindow/llwindowheadless.cpp
+++ b/indra/llwindow/llwindowheadless.cpp
@@ -34,8 +34,8 @@
 // LLWindowHeadless
 //
 LLWindowHeadless::LLWindowHeadless(LLWindowCallbacks* callbacks, const std::string& title, const std::string& name, S32 x, S32 y, S32 width, S32 height,
-                             U32 flags,  BOOL fullscreen, BOOL clear_background,
-                             BOOL enable_vsync, BOOL use_gl, BOOL ignore_pixel_depth)
+                             U32 flags,  bool fullscreen, bool clear_background,
+                             bool enable_vsync, bool use_gl, bool ignore_pixel_depth)
     : LLWindow(callbacks, fullscreen, flags)
 {
     // Initialize a headless keyboard.
diff --git a/indra/llwindow/llwindowheadless.h b/indra/llwindow/llwindowheadless.h
index af2cdb63fa..5696b69a59 100644
--- a/indra/llwindow/llwindowheadless.h
+++ b/indra/llwindow/llwindowheadless.h
@@ -35,10 +35,10 @@ public:
     /*virtual*/ void show() override {}
     /*virtual*/ void hide() override {}
     /*virtual*/ void close() override {}
-    /*virtual*/ BOOL getVisible() override {return FALSE;}
-    /*virtual*/ BOOL getMinimized() override {return FALSE;}
-    /*virtual*/ BOOL getMaximized() override {return FALSE;}
-    /*virtual*/ BOOL maximize() override {return FALSE;}
+    /*virtual*/ bool getVisible() override {return false;}
+    /*virtual*/ bool getMinimized() override {return false;}
+    /*virtual*/ bool getMaximized() override {return false;}
+    /*virtual*/ bool maximize() override {return false;}
     /*virtual*/ void minimize() override {}
     /*virtual*/ void restore() override {}
     // TODO: LLWindow::getFullscreen() is (intentionally?) NOT virtual.
@@ -46,42 +46,42 @@ public:
     // mistake to shadow the base-class method with an LLWindowHeadless
     // override when called on the subclass, yet call the base-class method
     // when indirecting through a polymorphic pointer or reference?
-    BOOL getFullscreen() {return FALSE;}
-    /*virtual*/ BOOL getPosition(LLCoordScreen *position) override {return FALSE;}
-    /*virtual*/ BOOL getSize(LLCoordScreen *size) override {return FALSE;}
-    /*virtual*/ BOOL getSize(LLCoordWindow *size) override {return FALSE;}
-    /*virtual*/ BOOL setPosition(LLCoordScreen position) override {return FALSE;}
-    /*virtual*/ BOOL setSizeImpl(LLCoordScreen size) override {return FALSE;}
-    /*virtual*/ BOOL setSizeImpl(LLCoordWindow size) override {return FALSE;}
-    /*virtual*/ BOOL switchContext(BOOL fullscreen, const LLCoordScreen &size, BOOL enable_vsync, const LLCoordScreen * const posp = NULL) override {return FALSE;}
+    bool getFullscreen() {return false;}
+    /*virtual*/ bool getPosition(LLCoordScreen *position) override {return false;}
+    /*virtual*/ bool getSize(LLCoordScreen *size) override {return false;}
+    /*virtual*/ bool getSize(LLCoordWindow *size) override {return false;}
+    /*virtual*/ bool setPosition(LLCoordScreen position) override {return false;}
+    /*virtual*/ bool setSizeImpl(LLCoordScreen size) override {return false;}
+    /*virtual*/ bool setSizeImpl(LLCoordWindow size) override {return false;}
+    /*virtual*/ bool switchContext(bool fullscreen, const LLCoordScreen &size, bool enable_vsync, const LLCoordScreen * const posp = NULL) override {return false;}
     void* createSharedContext() override  { return nullptr; }
     void makeContextCurrent(void*) override  {}
     void destroySharedContext(void*) override  {}
     /*virtual*/ void toggleVSync(bool enable_vsync) override { }
-    /*virtual*/ BOOL setCursorPosition(LLCoordWindow position) override {return FALSE;}
-    /*virtual*/ BOOL getCursorPosition(LLCoordWindow *position) override {return FALSE;}
+    /*virtual*/ bool setCursorPosition(LLCoordWindow position) override {return false;}
+    /*virtual*/ bool getCursorPosition(LLCoordWindow *position) override {return false;}
 #if LL_WINDOWS
-    /*virtual*/ BOOL getCursorDelta(LLCoordCommon* delta) override { return FALSE; }
+    /*virtual*/ bool getCursorDelta(LLCoordCommon* delta) override { return false; }
 #endif
     /*virtual*/ void showCursor() override {}
     /*virtual*/ void hideCursor() override {}
     /*virtual*/ void showCursorFromMouseMove() override {}
     /*virtual*/ void hideCursorUntilMouseMove() override {}
-    /*virtual*/ BOOL isCursorHidden() override {return FALSE;}
+    /*virtual*/ bool isCursorHidden() override {return false;}
     /*virtual*/ void updateCursor() override {}
     //virtual ECursorType getCursor() override { return mCurrentCursor; }
     /*virtual*/ void captureMouse() override {}
     /*virtual*/ void releaseMouse() override {}
-    /*virtual*/ void setMouseClipping( BOOL b ) override {}
-    /*virtual*/ BOOL isClipboardTextAvailable() override {return FALSE; }
-    /*virtual*/ BOOL pasteTextFromClipboard(LLWString &dst) override {return FALSE; }
-    /*virtual*/ BOOL copyTextToClipboard(const LLWString &src) override {return FALSE; }
+    /*virtual*/ void setMouseClipping( bool b ) override {}
+    /*virtual*/ bool isClipboardTextAvailable() override {return false; }
+    /*virtual*/ bool pasteTextFromClipboard(LLWString &dst) override {return false; }
+    /*virtual*/ bool copyTextToClipboard(const LLWString &src) override {return false; }
     /*virtual*/ void flashIcon(F32 seconds) override {}
     /*virtual*/ F32 getGamma() override {return 1.0f; }
-    /*virtual*/ BOOL setGamma(const F32 gamma) override {return FALSE; } // Set the gamma
+    /*virtual*/ bool setGamma(const F32 gamma) override {return false; } // Set the gamma
     /*virtual*/ void setFSAASamples(const U32 fsaa_samples) override { }
     /*virtual*/ U32 getFSAASamples() override { return 0; }
-    /*virtual*/ BOOL restoreGamma() override {return FALSE; }   // Restore original gamma table (before updating gamma)
+    /*virtual*/ bool restoreGamma() override {return false; }   // Restore original gamma table (before updating gamma)
     //virtual ESwapMethod getSwapMethod() override { return mSwapMethod; }
     /*virtual*/ void gatherInput() override {}
     /*virtual*/ void delayInputProcessing() override {}
@@ -89,20 +89,18 @@ public:
 
 
     // handy coordinate space conversion routines
-    /*virtual*/ BOOL convertCoords(LLCoordScreen from, LLCoordWindow *to) override { return FALSE; }
-    /*virtual*/ BOOL convertCoords(LLCoordWindow from, LLCoordScreen *to) override { return FALSE; }
-    /*virtual*/ BOOL convertCoords(LLCoordWindow from, LLCoordGL *to) override { return FALSE; }
-    /*virtual*/ BOOL convertCoords(LLCoordGL from, LLCoordWindow *to) override { return FALSE; }
-    /*virtual*/ BOOL convertCoords(LLCoordScreen from, LLCoordGL *to) override { return FALSE; }
-    /*virtual*/ BOOL convertCoords(LLCoordGL from, LLCoordScreen *to) override { return FALSE; }
+    /*virtual*/ bool convertCoords(LLCoordScreen from, LLCoordWindow *to) override { return false; }
+    /*virtual*/ bool convertCoords(LLCoordWindow from, LLCoordScreen *to) override { return false; }
+    /*virtual*/ bool convertCoords(LLCoordWindow from, LLCoordGL *to) override { return false; }
+    /*virtual*/ bool convertCoords(LLCoordGL from, LLCoordWindow *to) override { return false; }
+    /*virtual*/ bool convertCoords(LLCoordScreen from, LLCoordGL *to) override { return false; }
+    /*virtual*/ bool convertCoords(LLCoordGL from, LLCoordScreen *to) override { return false; }
 
     /*virtual*/ LLWindowResolution* getSupportedResolutions(S32 &num_resolutions) override { return NULL; }
     /*virtual*/ F32 getNativeAspectRatio() override { return 1.0f; }
     /*virtual*/ F32 getPixelAspectRatio() override { return 1.0f; }
     /*virtual*/ void setNativeAspectRatio(F32 ratio) override {}
 
-    U32 getAvailableVRAMMegabytes() override { return 4096; }
-
     /*virtual*/ void *getPlatformWindow() override { return 0; }
     /*virtual*/ void bringToFront() override {}
 
@@ -110,8 +108,8 @@ public:
         const std::string& title, const std::string& name,
         S32 x, S32 y,
         S32 width, S32 height,
-        U32 flags,  BOOL fullscreen, BOOL clear_background,
-        BOOL enable_vsync, BOOL use_gl, BOOL ignore_pixel_depth);
+        U32 flags,  bool fullscreen, bool clear_background,
+        bool enable_vsync, bool use_gl, bool ignore_pixel_depth);
     virtual ~LLWindowHeadless();
 
 private:
diff --git a/indra/llwindow/llwindowmacosx-objc.h b/indra/llwindow/llwindowmacosx-objc.h
index 31dc83493e..d9d8bfce1f 100644
--- a/indra/llwindow/llwindowmacosx-objc.h
+++ b/indra/llwindow/llwindowmacosx-objc.h
@@ -30,6 +30,7 @@
 
 #include <map>
 #include <vector>
+#include <deque>
 
 //fir CGSize
 #include <CoreGraphics/CGGeometry.h>
@@ -37,7 +38,7 @@
 typedef std::vector<std::pair<int, bool> > segment_t;
 
 typedef std::vector<int> segment_lengths;
-typedef std::vector<int> segment_standouts;
+typedef std::deque<bool> segment_standouts;
 
 struct attributedStringInfo {
     segment_lengths seg_lengths;
diff --git a/indra/llwindow/llwindowmacosx.cpp b/indra/llwindow/llwindowmacosx.cpp
index 842a41427e..3cfc9d7c84 100644
--- a/indra/llwindow/llwindowmacosx.cpp
+++ b/indra/llwindow/llwindowmacosx.cpp
@@ -51,10 +51,8 @@
 #include <IOKit/hid/IOHIDLib.h>
 #include <IOKit/usb/IOUSBLib.h>
 
-
-
-extern BOOL gDebugWindowProc;
-BOOL gHiDPISupport = TRUE;
+extern bool gDebugWindowProc;
+bool gHiDPISupport = true;
 
 const S32   BITS_PER_PIXEL = 32;
 const S32   MAX_NUM_RESOLUTIONS = 32;
@@ -69,11 +67,11 @@ namespace
 // LLWindowMacOSX
 //
 
-BOOL LLWindowMacOSX::sUseMultGL = FALSE;
+bool LLWindowMacOSX::sUseMultGL = false;
 
 // Cross-platform bits:
 
-BOOL check_for_card(const char* RENDERER, const char* bad_card)
+bool check_for_card(const char* RENDERER, const char* bad_card)
 {
     if (!strnicmp(RENDERER, bad_card, strlen(bad_card)))
     {
@@ -94,15 +92,15 @@ BOOL check_for_card(const char* RENDERER, const char* bad_card)
         S32 button = OSMessageBox(buffer.c_str(), "Unsupported video card", OSMB_YESNO);
         if (OSBTN_YES == button)
         {
-            return FALSE;
+            return false;
         }
         else
         {
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 // Switch to determine whether we capture all displays, or just the main one.
@@ -122,9 +120,9 @@ static LLWindowMacOSX *gWindowImplementation = NULL;
 LLWindowMacOSX::LLWindowMacOSX(LLWindowCallbacks* callbacks,
                                const std::string& title, const std::string& name, S32 x, S32 y, S32 width,
                                S32 height, U32 flags,
-                               BOOL fullscreen, BOOL clearBg,
-                               BOOL enable_vsync, BOOL use_gl,
-                               BOOL ignore_pixel_depth,
+                               bool fullscreen, bool clearBg,
+                               bool enable_vsync, bool use_gl,
+                               bool ignore_pixel_depth,
                                U32 fsaa_samples)
     : LLWindow(NULL, fullscreen, flags)
 {
@@ -146,21 +144,21 @@ LLWindowMacOSX::LLWindowMacOSX(LLWindowCallbacks* callbacks,
     mContext = NULL;
     mPixelFormat = NULL;
     mDisplay = CGMainDisplayID();
-    mSimulatedRightClick = FALSE;
+    mSimulatedRightClick = false;
     mLastModifiers = 0;
-    mHandsOffEvents = FALSE;
-    mCursorDecoupled = FALSE;
+    mHandsOffEvents = false;
+    mCursorDecoupled = false;
     mCursorLastEventDeltaX = 0;
     mCursorLastEventDeltaY = 0;
-    mCursorIgnoreNextDelta = FALSE;
-    mNeedsResize = FALSE;
+    mCursorIgnoreNextDelta = false;
+    mNeedsResize = false;
     mOverrideAspectRatio = 0.f;
-    mMaximized = FALSE;
-    mMinimized = FALSE;
-    mLanguageTextInputAllowed = FALSE;
+    mMaximized = false;
+    mMinimized = false;
+    mLanguageTextInputAllowed = false;
     mPreeditor = NULL;
     mFSAASamples = fsaa_samples;
-    mForceRebuild = FALSE;
+    mForceRebuild = false;
 
     // Get the original aspect ratio of the main device.
     mOriginalAspectRatio = (double)CGDisplayPixelsWide(mDisplay) / (double)CGDisplayPixelsHigh(mDisplay);
@@ -200,7 +198,7 @@ LLWindowMacOSX::LLWindowMacOSX(LLWindowCallbacks* callbacks,
         initCursors();
         setCursor( UI_CURSOR_ARROW );
 
-        allowLanguageTextInput(NULL, FALSE);
+        allowLanguageTextInput(NULL, false);
     }
 
     mCallbacks = callbacks;
@@ -292,7 +290,7 @@ void callRightMouseDown(float *pos, MASK mask)
     LLCoordGL       outCoords;
     outCoords.mX = ll_round(pos[0]);
     outCoords.mY = ll_round(pos[1]);
-    gWindowImplementation->getCallbacks()->handleRightMouseDown(gWindowImplementation, outCoords, gKeyboard->currentMask(TRUE));
+    gWindowImplementation->getCallbacks()->handleRightMouseDown(gWindowImplementation, outCoords, gKeyboard->currentMask(true));
 }
 
 void callRightMouseUp(float *pos, MASK mask)
@@ -305,7 +303,7 @@ void callRightMouseUp(float *pos, MASK mask)
     LLCoordGL       outCoords;
     outCoords.mX = ll_round(pos[0]);
     outCoords.mY = ll_round(pos[1]);
-    gWindowImplementation->getCallbacks()->handleRightMouseUp(gWindowImplementation, outCoords, gKeyboard->currentMask(TRUE));
+    gWindowImplementation->getCallbacks()->handleRightMouseUp(gWindowImplementation, outCoords, gKeyboard->currentMask(true));
 }
 
 void callLeftMouseDown(float *pos, MASK mask)
@@ -318,7 +316,7 @@ void callLeftMouseDown(float *pos, MASK mask)
     LLCoordGL       outCoords;
     outCoords.mX = ll_round(pos[0]);
     outCoords.mY = ll_round(pos[1]);
-    gWindowImplementation->getCallbacks()->handleMouseDown(gWindowImplementation, outCoords, gKeyboard->currentMask(TRUE));
+    gWindowImplementation->getCallbacks()->handleMouseDown(gWindowImplementation, outCoords, gKeyboard->currentMask(true));
 }
 
 void callLeftMouseUp(float *pos, MASK mask)
@@ -331,7 +329,7 @@ void callLeftMouseUp(float *pos, MASK mask)
     LLCoordGL       outCoords;
     outCoords.mX = ll_round(pos[0]);
     outCoords.mY = ll_round(pos[1]);
-    gWindowImplementation->getCallbacks()->handleMouseUp(gWindowImplementation, outCoords, gKeyboard->currentMask(TRUE));
+    gWindowImplementation->getCallbacks()->handleMouseUp(gWindowImplementation, outCoords, gKeyboard->currentMask(true));
 
 }
 
@@ -345,7 +343,7 @@ void callDoubleClick(float *pos, MASK mask)
     LLCoordGL   outCoords;
     outCoords.mX = ll_round(pos[0]);
     outCoords.mY = ll_round(pos[1]);
-    gWindowImplementation->getCallbacks()->handleDoubleClick(gWindowImplementation, outCoords, gKeyboard->currentMask(TRUE));
+    gWindowImplementation->getCallbacks()->handleDoubleClick(gWindowImplementation, outCoords, gKeyboard->currentMask(true));
 }
 
 void callResize(unsigned int width, unsigned int height)
@@ -365,7 +363,7 @@ void callMouseMoved(float *pos, MASK mask)
     gWindowImplementation->getMouseDeltas(deltas);
     outCoords.mX += deltas[0];
     outCoords.mY += deltas[1];
-    gWindowImplementation->getCallbacks()->handleMouseMove(gWindowImplementation, outCoords, gKeyboard->currentMask(TRUE));
+    gWindowImplementation->getCallbacks()->handleMouseMove(gWindowImplementation, outCoords, gKeyboard->currentMask(true));
     //gWindowImplementation->getCallbacks()->handleScrollWheel(gWindowImplementation, 0);
 }
 
@@ -378,7 +376,7 @@ void callMouseDragged(float *pos, MASK mask)
     gWindowImplementation->getMouseDeltas(deltas);
     outCoords.mX += deltas[0];
     outCoords.mY += deltas[1];
-    gWindowImplementation->getCallbacks()->handleMouseDragged(gWindowImplementation, outCoords, gKeyboard->currentMask(TRUE));
+    gWindowImplementation->getCallbacks()->handleMouseDragged(gWindowImplementation, outCoords, gKeyboard->currentMask(true));
 }
 
 void callScrollMoved(float deltaX, float deltaY)
@@ -620,7 +618,7 @@ void LLWindowMacOSX::updateMouseDeltas(float* deltas)
         {
             mCursorLastEventDeltaX = 0;
             mCursorLastEventDeltaY = 0;
-            mCursorIgnoreNextDelta = FALSE;
+            mCursorIgnoreNextDelta = false;
         }
     } else {
         mCursorLastEventDeltaX = 0;
@@ -634,7 +632,7 @@ void LLWindowMacOSX::getMouseDeltas(float* delta)
     delta[1] = mCursorLastEventDeltaY;
 }
 
-BOOL LLWindowMacOSX::createContext(int x, int y, int width, int height, int bits, BOOL fullscreen, BOOL enable_vsync)
+bool LLWindowMacOSX::createContext(int x, int y, int width, int height, int bits, bool fullscreen, bool enable_vsync)
 {
     mFullscreen = fullscreen;
 
@@ -693,7 +691,7 @@ BOOL LLWindowMacOSX::createContext(int x, int y, int width, int height, int bits
         if (err != kCGLNoError)
         {
             setupFailure("Can't activate GL rendering context", "Error", OSMB_OK);
-            return FALSE;
+            return false;
         }
     }
 
@@ -726,15 +724,15 @@ BOOL LLWindowMacOSX::createContext(int x, int y, int width, int height, int bits
     }
     makeFirstResponder(mWindow, mGLView);
 
-    return TRUE;
+    return true;
 }
 
 
 // We only support OS X 10.7's fullscreen app mode which is literally a full screen window that fills a virtual desktop.
 // This makes this method obsolete.
-BOOL LLWindowMacOSX::switchContext(BOOL fullscreen, const LLCoordScreen &size, BOOL enable_vsync, const LLCoordScreen * const posp)
+bool LLWindowMacOSX::switchContext(bool fullscreen, const LLCoordScreen &size, bool enable_vsync, const LLCoordScreen * const posp)
 {
-    return FALSE;
+    return false;
 }
 
 void LLWindowMacOSX::destroyContext()
@@ -804,13 +802,13 @@ void LLWindowMacOSX::show()
 
 void LLWindowMacOSX::hide()
 {
-    setMouseClipping(FALSE);
+    setMouseClipping(false);
 }
 
 //virtual
 void LLWindowMacOSX::minimize()
 {
-    setMouseClipping(FALSE);
+    setMouseClipping(false);
     showCursor();
 }
 
@@ -832,48 +830,48 @@ void LLWindowMacOSX::close()
     //  }
 
     // Make sure cursor is visible and we haven't mangled the clipping state.
-    setMouseClipping(FALSE);
+    setMouseClipping(false);
     showCursor();
 
     destroyContext();
 }
 
-BOOL LLWindowMacOSX::isValid()
+bool LLWindowMacOSX::isValid()
 {
     if(mFullscreen)
     {
-        return(TRUE);
+        return(true);
     }
 
     return (mWindow != NULL);
 }
 
-BOOL LLWindowMacOSX::getVisible()
+bool LLWindowMacOSX::getVisible()
 {
-    BOOL result = FALSE;
+    bool result = false;
 
     if(mFullscreen)
     {
-        result = TRUE;
+        result = true;
     }if (mWindow)
     {
-            result = TRUE;
+            result = true;
     }
 
     return(result);
 }
 
-BOOL LLWindowMacOSX::getMinimized()
+bool LLWindowMacOSX::getMinimized()
 {
     return mMinimized;
 }
 
-BOOL LLWindowMacOSX::getMaximized()
+bool LLWindowMacOSX::getMaximized()
 {
     return mMaximized;
 }
 
-BOOL LLWindowMacOSX::maximize()
+bool LLWindowMacOSX::maximize()
 {
     if (mWindow && !mMaximized)
     {
@@ -882,7 +880,7 @@ BOOL LLWindowMacOSX::maximize()
     return mMaximized;
 }
 
-BOOL LLWindowMacOSX::getFullscreen()
+bool LLWindowMacOSX::getFullscreen()
 {
     return mFullscreen;
 }
@@ -892,7 +890,7 @@ void LLWindowMacOSX::gatherInput()
     updateCursor();
 }
 
-BOOL LLWindowMacOSX::getPosition(LLCoordScreen *position)
+bool LLWindowMacOSX::getPosition(LLCoordScreen *position)
 {
     S32 err = -1;
 
@@ -919,7 +917,7 @@ BOOL LLWindowMacOSX::getPosition(LLCoordScreen *position)
     return (err == noErr);
 }
 
-BOOL LLWindowMacOSX::getSize(LLCoordScreen *size)
+bool LLWindowMacOSX::getSize(LLCoordScreen *size)
 {
     S32 err = -1;
 
@@ -945,7 +943,7 @@ BOOL LLWindowMacOSX::getSize(LLCoordScreen *size)
     return (err == noErr);
 }
 
-BOOL LLWindowMacOSX::getSize(LLCoordWindow *size)
+bool LLWindowMacOSX::getSize(LLCoordWindow *size)
 {
     S32 err = -1;
 
@@ -973,7 +971,7 @@ BOOL LLWindowMacOSX::getSize(LLCoordWindow *size)
     return (err == noErr);
 }
 
-BOOL LLWindowMacOSX::setPosition(const LLCoordScreen position)
+bool LLWindowMacOSX::setPosition(const LLCoordScreen position)
 {
     if(mWindow)
     {
@@ -981,32 +979,32 @@ BOOL LLWindowMacOSX::setPosition(const LLCoordScreen position)
         setWindowPos(mWindow, pos);
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowMacOSX::setSizeImpl(const LLCoordScreen size)
+bool LLWindowMacOSX::setSizeImpl(const LLCoordScreen size)
 {
     if(mWindow)
     {
         LLCoordWindow to;
         convertCoords(size, &to);
         setWindowSize(mWindow, to.mX, to.mY);
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowMacOSX::setSizeImpl(const LLCoordWindow size)
+bool LLWindowMacOSX::setSizeImpl(const LLCoordWindow size)
 {
     if (mWindow)
     {
         const int titlePadding = 22;
         setWindowSize(mWindow, size.mX, size.mY + titlePadding);
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLWindowMacOSX::swapBuffers()
@@ -1061,16 +1059,16 @@ U32 LLWindowMacOSX::getFSAASamples()
 void LLWindowMacOSX::setFSAASamples(const U32 samples)
 {
     mFSAASamples = samples;
-    mForceRebuild = TRUE;
+    mForceRebuild = true;
 }
 
-BOOL LLWindowMacOSX::restoreGamma()
+bool LLWindowMacOSX::restoreGamma()
 {
     CGDisplayRestoreColorSyncSettings();
     return true;
 }
 
-BOOL LLWindowMacOSX::setGamma(const F32 gamma)
+bool LLWindowMacOSX::setGamma(const F32 gamma)
 {
     CGGammaValue redMin;
     CGGammaValue redMax;
@@ -1118,7 +1116,7 @@ BOOL LLWindowMacOSX::setGamma(const F32 gamma)
     return true;
 }
 
-BOOL LLWindowMacOSX::isCursorHidden()
+bool LLWindowMacOSX::isCursorHidden()
 {
     return mCursorHidden;
 }
@@ -1126,31 +1124,31 @@ BOOL LLWindowMacOSX::isCursorHidden()
 
 
 // Constrains the mouse to the window.
-void LLWindowMacOSX::setMouseClipping( BOOL b )
+void LLWindowMacOSX::setMouseClipping( bool b )
 {
     // Just stash the requested state.  We'll simulate this when the cursor is hidden by decoupling.
     mIsMouseClipping = b;
 
     if(b)
     {
-        //      LL_INFOS() << "setMouseClipping(TRUE)" << LL_ENDL;
+        //      LL_INFOS() << "setMouseClipping(true)" << LL_ENDL;
     }
     else
     {
-        //      LL_INFOS() << "setMouseClipping(FALSE)" << LL_ENDL;
+        //      LL_INFOS() << "setMouseClipping(false)" << LL_ENDL;
     }
 
     adjustCursorDecouple();
 }
 
-BOOL LLWindowMacOSX::setCursorPosition(const LLCoordWindow position)
+bool LLWindowMacOSX::setCursorPosition(const LLCoordWindow position)
 {
-    BOOL result = FALSE;
+    bool result = false;
     LLCoordScreen screen_pos;
 
     if (!convertCoords(position, &screen_pos))
     {
-        return FALSE;
+        return false;
     }
 
     CGPoint newPosition;
@@ -1163,7 +1161,7 @@ BOOL LLWindowMacOSX::setCursorPosition(const LLCoordWindow position)
     CGSetLocalEventsSuppressionInterval(0.0);
     if(CGWarpMouseCursorPosition(newPosition) == noErr)
     {
-        result = TRUE;
+        result = true;
     }
 
     // Under certain circumstances, this will trigger us to decouple the cursor.
@@ -1180,13 +1178,13 @@ BOOL LLWindowMacOSX::setCursorPosition(const LLCoordWindow position)
     return result;
 }
 
-BOOL LLWindowMacOSX::getCursorPosition(LLCoordWindow *position)
+bool LLWindowMacOSX::getCursorPosition(LLCoordWindow *position)
 {
     float cursor_point[2];
     LLCoordScreen screen_pos;
 
     if(mWindow == NULL)
-        return FALSE;
+        return false;
 
     getCursorPos(mWindow, cursor_point);
 
@@ -1209,7 +1207,7 @@ BOOL LLWindowMacOSX::getCursorPosition(LLCoordWindow *position)
     position->mX = cursor_point[0] * scale;
     position->mY = cursor_point[1] * scale;
 
-    return TRUE;
+    return true;
 }
 
 void LLWindowMacOSX::adjustCursorDecouple(bool warpingMouse)
@@ -1224,7 +1222,7 @@ void LLWindowMacOSX::adjustCursorDecouple(bool warpingMouse)
                 //          LL_INFOS() << "adjustCursorDecouple: decoupling cursor" << LL_ENDL;
                 CGAssociateMouseAndMouseCursorPosition(false);
                 mCursorDecoupled = true;
-                mCursorIgnoreNextDelta = TRUE;
+                mCursorIgnoreNextDelta = true;
             }
         }
     }
@@ -1262,20 +1260,10 @@ F32 LLWindowMacOSX::getNativeAspectRatio()
 
 F32 LLWindowMacOSX::getPixelAspectRatio()
 {
-    //OS X always enforces a 1:1 pixel aspect ratio, regardless of video mode
+    //macOS always enforces a 1:1 pixel aspect ratio, regardless of video mode
     return 1.f;
 }
 
-U32 LLWindowMacOSX::getAvailableVRAMMegabytes() {
-    // MTL (and MoltenVK) has some additional gpu data, such as recommendedMaxWorkingSetSize and currentAllocatedSize.
-    // But these are not available for OpenGL and/or our current mimimum OS version.
-    // So we will estimate.
-    static const U32 mb = 1024*1024;
-    // We're asked for total available gpu memory, but we only have allocation info on texture usage. So estimate by doubling that.
-    static const U32 total_factor = 2; // estimated total/textures
-    return gGLManager.mVRAM - (LLImageGL::getTextureBytesAllocated() * total_factor/mb);
-}
-
 //static SInt32 oldWindowLevel;
 
 // MBW -- XXX -- There's got to be a better way than this.  Find it, please...
@@ -1294,17 +1282,17 @@ void LLWindowMacOSX::afterDialog()
 
 void LLWindowMacOSX::flashIcon(F32 seconds)
 {
-    // For consistency with OS X conventions, the number of seconds given is ignored and
+    // For consistency with macOS conventions, the number of seconds given is ignored and
     // left up to the OS (which will actually bounce it for one second).
     requestUserAttention();
 }
 
-BOOL LLWindowMacOSX::isClipboardTextAvailable()
+bool LLWindowMacOSX::isClipboardTextAvailable()
 {
     return pasteBoardAvailable();
 }
 
-BOOL LLWindowMacOSX::pasteTextFromClipboard(LLWString &dst)
+bool LLWindowMacOSX::pasteTextFromClipboard(LLWString &dst)
 {
     unsigned short* pboard_data = copyFromPBoard(); // must free returned data
     llutf16string str(pboard_data);
@@ -1319,9 +1307,9 @@ BOOL LLWindowMacOSX::pasteTextFromClipboard(LLWString &dst)
     }
 }
 
-BOOL LLWindowMacOSX::copyTextToClipboard(const LLWString &s)
+bool LLWindowMacOSX::copyTextToClipboard(const LLWString &s)
 {
-    BOOL result = false;
+    bool result = false;
     llutf16string utf16str = wstring_to_utf16str(s);
 
     result = copyToPBoard(utf16str.data(), utf16str.length());
@@ -1331,7 +1319,7 @@ BOOL LLWindowMacOSX::copyTextToClipboard(const LLWString &s)
 
 
 // protected
-BOOL LLWindowMacOSX::resetDisplayResolution()
+bool LLWindowMacOSX::resetDisplayResolution()
 {
     // This is only called from elsewhere in this class, and it's not used by the Mac implementation.
     return true;
@@ -1364,13 +1352,13 @@ LLWindow::LLWindowResolution* LLWindowMacOSX::getSupportedResolutions(S32 &num_r
 
                 if(bits == BITS_PER_PIXEL && width >= 800 && height >= 600)
                 {
-                    BOOL resolution_exists = FALSE;
+                    bool resolution_exists = false;
                     for(S32 i = 0; i < mNumSupportedResolutions; i++)
                     {
                         if (mSupportedResolutions[i].mWidth == width &&
                             mSupportedResolutions[i].mHeight == height)
                         {
-                            resolution_exists = TRUE;
+                            resolution_exists = true;
                         }
                     }
                     if (!resolution_exists)
@@ -1389,21 +1377,21 @@ LLWindow::LLWindowResolution* LLWindowMacOSX::getSupportedResolutions(S32 &num_r
     return mSupportedResolutions;
 }
 
-BOOL LLWindowMacOSX::convertCoords(LLCoordGL from, LLCoordWindow *to)
+bool LLWindowMacOSX::convertCoords(LLCoordGL from, LLCoordWindow *to)
 {
     to->mX = from.mX;
     to->mY = from.mY;
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowMacOSX::convertCoords(LLCoordWindow from, LLCoordGL* to)
+bool LLWindowMacOSX::convertCoords(LLCoordWindow from, LLCoordGL* to)
 {
     to->mX = from.mX;
     to->mY = from.mY;
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowMacOSX::convertCoords(LLCoordScreen from, LLCoordWindow* to)
+bool LLWindowMacOSX::convertCoords(LLCoordScreen from, LLCoordWindow* to)
 {
     if(mWindow)
     {
@@ -1417,12 +1405,12 @@ BOOL LLWindowMacOSX::convertCoords(LLCoordScreen from, LLCoordWindow* to)
         to->mX = mouse_point[0];
         to->mY = mouse_point[1];
 
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowMacOSX::convertCoords(LLCoordWindow from, LLCoordScreen *to)
+bool LLWindowMacOSX::convertCoords(LLCoordWindow from, LLCoordScreen *to)
 {
     if(mWindow)
     {
@@ -1436,19 +1424,19 @@ BOOL LLWindowMacOSX::convertCoords(LLCoordWindow from, LLCoordScreen *to)
         to->mX = mouse_point[0];
         to->mY = mouse_point[1];
 
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLWindowMacOSX::convertCoords(LLCoordScreen from, LLCoordGL *to)
+bool LLWindowMacOSX::convertCoords(LLCoordScreen from, LLCoordGL *to)
 {
     LLCoordWindow window_coord;
 
     return(convertCoords(from, &window_coord) && convertCoords(window_coord, to));
 }
 
-BOOL LLWindowMacOSX::convertCoords(LLCoordGL from, LLCoordScreen *to)
+bool LLWindowMacOSX::convertCoords(LLCoordGL from, LLCoordScreen *to)
 {
     LLCoordWindow window_coord;
 
@@ -1710,8 +1698,8 @@ void LLWindowMacOSX::hideCursor()
     if(!mCursorHidden)
     {
         //      LL_INFOS() << "hideCursor: hiding" << LL_ENDL;
-        mCursorHidden = TRUE;
-        mHideCursorPermanent = TRUE;
+        mCursorHidden = true;
+        mHideCursorPermanent = true;
         hideNSCursor();
     }
     else
@@ -1727,8 +1715,8 @@ void LLWindowMacOSX::showCursor()
     if(mCursorHidden || !isCGCursorVisible())
     {
         //      LL_INFOS() << "showCursor: showing" << LL_ENDL;
-        mCursorHidden = FALSE;
-        mHideCursorPermanent = FALSE;
+        mCursorHidden = false;
+        mHideCursorPermanent = false;
         showNSCursor();
     }
     else
@@ -1752,7 +1740,7 @@ void LLWindowMacOSX::hideCursorUntilMouseMove()
     if (!mHideCursorPermanent)
     {
         hideCursor();
-        mHideCursorPermanent = FALSE;
+        mHideCursorPermanent = false;
     }
 }
 
@@ -2353,9 +2341,9 @@ LLSD LLWindowMacOSX::getNativeKeyData()
     return result;
 }
 
-BOOL LLWindowMacOSX::dialogColorPicker( F32 *r, F32 *g, F32 *b)
+bool LLWindowMacOSX::dialogColorPicker( F32 *r, F32 *g, F32 *b)
 {
-    BOOL    retval = FALSE;
+    bool    retval = false;
     OSErr   error = noErr;
     NColorPickerInfo    info;
 
@@ -2412,12 +2400,12 @@ static long getDictLong (CFDictionaryRef refDict, CFStringRef key)
     return int_value; // otherwise return the long value
 }
 
-void LLWindowMacOSX::allowLanguageTextInput(LLPreeditor *preeditor, BOOL b)
+void LLWindowMacOSX::allowLanguageTextInput(LLPreeditor *preeditor, bool b)
 {
     if (preeditor != mPreeditor && !b)
     {
         // This condition may occur by a call to
-        // setEnabled(BOOL) against LLTextEditor or LLLineEditor
+        // setEnabled(bool) against LLTextEditor or LLLineEditor
         // when the control is not focused.
         // We need to silently ignore the case so that
         // the language input status of the focused control
diff --git a/indra/llwindow/llwindowmacosx.h b/indra/llwindow/llwindowmacosx.h
index 5e09e58a99..f5b6441746 100644
--- a/indra/llwindow/llwindowmacosx.h
+++ b/indra/llwindow/llwindowmacosx.h
@@ -47,71 +47,68 @@ public:
     void show() override;
     void hide() override;
     void close() override;
-    BOOL getVisible() override;
-    BOOL getMinimized() override;
-    BOOL getMaximized() override;
-    BOOL maximize() override;
+    bool getVisible() override;
+    bool getMinimized() override;
+    bool getMaximized() override;
+    bool maximize() override;
     void minimize() override;
     void restore() override;
-    BOOL getFullscreen();
-    BOOL getPosition(LLCoordScreen *position) override;
-    BOOL getSize(LLCoordScreen *size) override;
-    BOOL getSize(LLCoordWindow *size) override;
-    BOOL setPosition(LLCoordScreen position) override;
-    BOOL setSizeImpl(LLCoordScreen size) override;
-    BOOL setSizeImpl(LLCoordWindow size) override;
-    BOOL switchContext(BOOL fullscreen, const LLCoordScreen &size, BOOL enable_vsync, const LLCoordScreen * const posp = NULL) override;
-    BOOL setCursorPosition(LLCoordWindow position) override;
-    BOOL getCursorPosition(LLCoordWindow *position) override;
+    bool getFullscreen();
+    bool getPosition(LLCoordScreen *position) override;
+    bool getSize(LLCoordScreen *size) override;
+    bool getSize(LLCoordWindow *size) override;
+    bool setPosition(LLCoordScreen position) override;
+    bool setSizeImpl(LLCoordScreen size) override;
+    bool setSizeImpl(LLCoordWindow size) override;
+    bool switchContext(bool fullscreen, const LLCoordScreen &size, bool enable_vsync, const LLCoordScreen * const posp = NULL) override;
+    bool setCursorPosition(LLCoordWindow position) override;
+    bool getCursorPosition(LLCoordWindow *position) override;
     void showCursor() override;
     void hideCursor() override;
     void showCursorFromMouseMove() override;
     void hideCursorUntilMouseMove() override;
-    BOOL isCursorHidden() override;
+    bool isCursorHidden() override;
     void updateCursor() override;
     ECursorType getCursor() const override;
     void captureMouse() override;
     void releaseMouse() override;
-    void setMouseClipping( BOOL b ) override;
-    BOOL isClipboardTextAvailable() override;
-    BOOL pasteTextFromClipboard(LLWString &dst) override;
-    BOOL copyTextToClipboard(const LLWString & src) override;
+    void setMouseClipping( bool b ) override;
+    bool isClipboardTextAvailable() override;
+    bool pasteTextFromClipboard(LLWString &dst) override;
+    bool copyTextToClipboard(const LLWString & src) override;
     void flashIcon(F32 seconds) override;
     F32 getGamma() override;
-    BOOL setGamma(const F32 gamma) override; // Set the gamma
+    bool setGamma(const F32 gamma) override; // Set the gamma
     U32 getFSAASamples() override;
     void setFSAASamples(const U32 fsaa_samples) override;
-    BOOL restoreGamma() override;           // Restore original gamma table (before updating gamma)
+    bool restoreGamma() override;           // Restore original gamma table (before updating gamma)
     ESwapMethod getSwapMethod() override { return mSwapMethod; }
     void gatherInput() override;
     void delayInputProcessing() override {};
     void swapBuffers() override;
 
     // handy coordinate space conversion routines
-    BOOL convertCoords(LLCoordScreen from, LLCoordWindow *to) override;
-    BOOL convertCoords(LLCoordWindow from, LLCoordScreen *to) override;
-    BOOL convertCoords(LLCoordWindow from, LLCoordGL *to) override;
-    BOOL convertCoords(LLCoordGL from, LLCoordWindow *to) override;
-    BOOL convertCoords(LLCoordScreen from, LLCoordGL *to) override;
-    BOOL convertCoords(LLCoordGL from, LLCoordScreen *to) override;
+    bool convertCoords(LLCoordScreen from, LLCoordWindow *to) override;
+    bool convertCoords(LLCoordWindow from, LLCoordScreen *to) override;
+    bool convertCoords(LLCoordWindow from, LLCoordGL *to) override;
+    bool convertCoords(LLCoordGL from, LLCoordWindow *to) override;
+    bool convertCoords(LLCoordScreen from, LLCoordGL *to) override;
+    bool convertCoords(LLCoordGL from, LLCoordScreen *to) override;
 
     LLWindowResolution* getSupportedResolutions(S32 &num_resolutions) override;
     F32 getNativeAspectRatio() override;
     F32 getPixelAspectRatio() override;
     void setNativeAspectRatio(F32 ratio) override { mOverrideAspectRatio = ratio; }
 
-    // query VRAM usage
-    /*virtual*/ U32 getAvailableVRAMMegabytes() override;
-
     void beforeDialog() override;
     void afterDialog() override;
 
-    BOOL dialogColorPicker(F32 *r, F32 *g, F32 *b) override;
+    bool dialogColorPicker(F32 *r, F32 *g, F32 *b) override;
 
     void *getPlatformWindow() override;
     void bringToFront() override {};
 
-    void allowLanguageTextInput(LLPreeditor *preeditor, BOOL b) override;
+    void allowLanguageTextInput(LLPreeditor *preeditor, bool b) override;
     void interruptLanguageTextInput() override;
     void spawnWebBrowser(const std::string& escaped_url, bool async) override;
     F32 getSystemUISize() override;
@@ -153,26 +150,26 @@ public:
 protected:
     LLWindowMacOSX(LLWindowCallbacks* callbacks,
         const std::string& title, const std::string& name, int x, int y, int width, int height, U32 flags,
-        BOOL fullscreen, BOOL clearBg, BOOL enable_vsync, BOOL use_gl,
-        BOOL ignore_pixel_depth,
+        bool fullscreen, bool clearBg, bool enable_vsync, bool use_gl,
+        bool ignore_pixel_depth,
         U32 fsaa_samples);
         ~LLWindowMacOSX();
 
     void    initCursors();
-    BOOL    isValid() override;
+    bool    isValid() override;
     void    moveWindow(const LLCoordScreen& position,const LLCoordScreen& size);
 
 
     // Changes display resolution. Returns true if successful
-    BOOL    setDisplayResolution(S32 width, S32 height, S32 bits, S32 refresh);
+    bool    setDisplayResolution(S32 width, S32 height, S32 bits, S32 refresh);
 
     // Go back to last fullscreen display resolution.
-    BOOL    setFullscreenResolution();
+    bool    setFullscreenResolution();
 
     // Restore the display resolution to its value before we ran the app.
-    BOOL    resetDisplayResolution();
+    bool    resetDisplayResolution();
 
-    BOOL    shouldPostQuit() { return mPostQuit; }
+    bool    shouldPostQuit() { return mPostQuit; }
 
     //Satisfy MAINT-3135 and MAINT-3288 with a flag.
     /*virtual */ void setOldResize(bool oldresize) override {setResizeMode(oldresize, mGLView); }
@@ -186,7 +183,7 @@ protected:
     //
 
     // create or re-create the GL context/window.  Called from the constructor and switchContext().
-    BOOL createContext(int x, int y, int width, int height, int bits, BOOL fullscreen, BOOL enable_vsync);
+    bool createContext(int x, int y, int width, int height, int bits, bool fullscreen, bool enable_vsync);
     void destroyContext();
     void setupFailure(const std::string& text, const std::string& caption, U32 type);
     void adjustCursorDecouple(bool warpingMouse = false);
@@ -214,30 +211,30 @@ protected:
     LLRect      mOldMouseClip;  // Screen rect to which the mouse cursor was globally constrained before we changed it in clipMouse()
     std::string mWindowTitle;
     double      mOriginalAspectRatio;
-    BOOL        mSimulatedRightClick;
+    bool        mSimulatedRightClick;
     U32         mLastModifiers;
-    BOOL        mHandsOffEvents;    // When true, temporarially disable CarbonEvent processing.
+    bool        mHandsOffEvents;    // When true, temporarially disable CarbonEvent processing.
     // Used to allow event processing when putting up dialogs in fullscreen mode.
-    BOOL        mCursorDecoupled;
+    bool        mCursorDecoupled;
     S32         mCursorLastEventDeltaX;
     S32         mCursorLastEventDeltaY;
-    BOOL        mCursorIgnoreNextDelta;
-    BOOL        mNeedsResize;       // Constructor figured out the window is too big, it needs a resize.
+    bool        mCursorIgnoreNextDelta;
+    bool        mNeedsResize;       // Constructor figured out the window is too big, it needs a resize.
     LLCoordScreen   mNeedsResizeSize;
     F32         mOverrideAspectRatio;
-    BOOL        mMaximized;
-    BOOL        mMinimized;
+    bool        mMaximized;
+    bool        mMinimized;
     U32         mFSAASamples;
-    BOOL        mForceRebuild;
+    bool        mForceRebuild;
 
     S32 mDragOverrideCursor;
 
     // Input method management through Text Service Manager.
-    BOOL        mLanguageTextInputAllowed;
+    bool        mLanguageTextInputAllowed;
     LLPreeditor*    mPreeditor;
 
 public:
-    static BOOL sUseMultGL;
+    static bool sUseMultGL;
 
     friend class LLWindowManager;
 
diff --git a/indra/llwindow/llwindowmesaheadless.cpp b/indra/llwindow/llwindowmesaheadless.cpp
index 58f8f80d2d..6cbd737ed2 100644
--- a/indra/llwindow/llwindowmesaheadless.cpp
+++ b/indra/llwindow/llwindowmesaheadless.cpp
@@ -40,8 +40,8 @@ U16 *gMesaBuffer = NULL;
 //
 LLWindowMesaHeadless::LLWindowMesaHeadless(LLWindowCallbacks* callbacks,
                                            const std::string& title, const std::string& name, S32 x, S32 y, S32 width, S32 height,
-                             U32 flags,  BOOL fullscreen, BOOL clearBg,
-                             BOOL disable_vsync, BOOL use_gl, BOOL ignore_pixel_depth)
+                             U32 flags,  bool fullscreen, bool clearBg,
+                             bool disable_vsync, bool use_gl, bool ignore_pixel_depth)
     : LLWindow(callbacks, fullscreen, flags)
 {
     if (use_gl)
diff --git a/indra/llwindow/llwindowmesaheadless.h b/indra/llwindow/llwindowmesaheadless.h
index 9aa376a6db..0bf8c46a30 100644
--- a/indra/llwindow/llwindowmesaheadless.h
+++ b/indra/llwindow/llwindowmesaheadless.h
@@ -39,38 +39,38 @@ public:
     /*virtual*/ void show() {};
     /*virtual*/ void hide() {};
     /*virtual*/ void close() {};
-    /*virtual*/ BOOL getVisible() {return FALSE;};
-    /*virtual*/ BOOL getMinimized() {return FALSE;};
-    /*virtual*/ BOOL getMaximized() {return FALSE;};
-    /*virtual*/ BOOL maximize() {return FALSE;};
+    /*virtual*/ bool getVisible() {return false;};
+    /*virtual*/ bool getMinimized() {return false;};
+    /*virtual*/ bool getMaximized() {return false;};
+    /*virtual*/ bool maximize() {return false;};
     /*virtual*/ void minimize() {};
     /*virtual*/ void restore() {};
-    /*virtual*/ BOOL getFullscreen() {return FALSE;};
-    /*virtual*/ BOOL getPosition(LLCoordScreen *position) {return FALSE;};
-    /*virtual*/ BOOL getSize(LLCoordScreen *size) {return FALSE;};
-    /*virtual*/ BOOL getSize(LLCoordWindow *size) {return FALSE;};
-    /*virtual*/ BOOL setPosition(LLCoordScreen position) {return FALSE;};
-    /*virtual*/ BOOL setSizeImpl(LLCoordScreen size) {return FALSE;};
-    /*virtual*/ BOOL switchContext(BOOL fullscreen, const LLCoordScreen &size, BOOL disable_vsync, const LLCoordScreen * const posp = NULL) {return FALSE;};
-    /*virtual*/ BOOL setCursorPosition(LLCoordWindow position) {return FALSE;};
-    /*virtual*/ BOOL getCursorPosition(LLCoordWindow *position) {return FALSE;};
+    /*virtual*/ bool getFullscreen() {return false;};
+    /*virtual*/ bool getPosition(LLCoordScreen *position) {return false;};
+    /*virtual*/ bool getSize(LLCoordScreen *size) {return false;};
+    /*virtual*/ bool getSize(LLCoordWindow *size) {return false;};
+    /*virtual*/ bool setPosition(LLCoordScreen position) {return false;};
+    /*virtual*/ bool setSizeImpl(LLCoordScreen size) {return false;};
+    /*virtual*/ bool switchContext(bool fullscreen, const LLCoordScreen &size, bool disable_vsync, const LLCoordScreen * const posp = NULL) {return false;};
+    /*virtual*/ bool setCursorPosition(LLCoordWindow position) {return false;};
+    /*virtual*/ bool getCursorPosition(LLCoordWindow *position) {return false;};
     /*virtual*/ void showCursor() {};
     /*virtual*/ void hideCursor() {};
     /*virtual*/ void showCursorFromMouseMove() {};
     /*virtual*/ void hideCursorUntilMouseMove() {};
-    /*virtual*/ BOOL isCursorHidden() {return FALSE;};
+    /*virtual*/ bool isCursorHidden() {return false;};
     /*virtual*/ void updateCursor() {};
     //virtual ECursorType getCursor() { return mCurrentCursor; };
     /*virtual*/ void captureMouse() {};
     /*virtual*/ void releaseMouse() {};
-    /*virtual*/ void setMouseClipping( BOOL b ) {};
-    /*virtual*/ BOOL isClipboardTextAvailable() {return FALSE; };
-    /*virtual*/ BOOL pasteTextFromClipboard(LLWString &dst) {return FALSE; };
-    /*virtual*/ BOOL copyTextToClipboard(const LLWString &src) {return FALSE; };
+    /*virtual*/ void setMouseClipping( bool b ) {};
+    /*virtual*/ bool isClipboardTextAvailable() {return false; };
+    /*virtual*/ bool pasteTextFromClipboard(LLWString &dst) {return false; };
+    /*virtual*/ bool copyTextToClipboard(const LLWString &src) {return false; };
     /*virtual*/ void flashIcon(F32 seconds) {};
     /*virtual*/ F32 getGamma() {return 1.0f; };
-    /*virtual*/ BOOL setGamma(const F32 gamma) {return FALSE; }; // Set the gamma
-    /*virtual*/ BOOL restoreGamma() {return FALSE; };   // Restore original gamma table (before updating gamma)
+    /*virtual*/ bool setGamma(const F32 gamma) {return false; }; // Set the gamma
+    /*virtual*/ bool restoreGamma() {return false; };   // Restore original gamma table (before updating gamma)
     /*virtual*/ void setFSAASamples(const U32 fsaa_samples) { /* FSAA not supported yet on Mesa headless.*/ }
     /*virtual*/ U32  getFSAASamples() { return 0; }
     //virtual ESwapMethod getSwapMethod() { return mSwapMethod; }
@@ -80,12 +80,12 @@ public:
     /*virtual*/ void restoreGLContext() {};
 
     // handy coordinate space conversion routines
-    /*virtual*/ BOOL convertCoords(LLCoordScreen from, LLCoordWindow *to) { return FALSE; };
-    /*virtual*/ BOOL convertCoords(LLCoordWindow from, LLCoordScreen *to) { return FALSE; };
-    /*virtual*/ BOOL convertCoords(LLCoordWindow from, LLCoordGL *to) { return FALSE; };
-    /*virtual*/ BOOL convertCoords(LLCoordGL from, LLCoordWindow *to) { return FALSE; };
-    /*virtual*/ BOOL convertCoords(LLCoordScreen from, LLCoordGL *to) { return FALSE; };
-    /*virtual*/ BOOL convertCoords(LLCoordGL from, LLCoordScreen *to) { return FALSE; };
+    /*virtual*/ bool convertCoords(LLCoordScreen from, LLCoordWindow *to) { return false; };
+    /*virtual*/ bool convertCoords(LLCoordWindow from, LLCoordScreen *to) { return false; };
+    /*virtual*/ bool convertCoords(LLCoordWindow from, LLCoordGL *to) { return false; };
+    /*virtual*/ bool convertCoords(LLCoordGL from, LLCoordWindow *to) { return false; };
+    /*virtual*/ bool convertCoords(LLCoordScreen from, LLCoordGL *to) { return false; };
+    /*virtual*/ bool convertCoords(LLCoordGL from, LLCoordScreen *to) { return false; };
 
     /*virtual*/ LLWindowResolution* getSupportedResolutions(S32 &num_resolutions) { return NULL; };
     /*virtual*/ F32 getNativeAspectRatio() { return 1.0f; };
@@ -97,8 +97,8 @@ public:
 
     LLWindowMesaHeadless(LLWindowCallbacks* callbacks,
                          const std::string& title, const std::string& name, S32 x, S32 y, S32 width, S32 height,
-                  U32 flags,  BOOL fullscreen, BOOL clearBg,
-                  BOOL disable_vsync, BOOL use_gl, BOOL ignore_pixel_depth);
+                  U32 flags,  bool fullscreen, bool clearBg,
+                  bool disable_vsync, bool use_gl, bool ignore_pixel_depth);
     ~LLWindowMesaHeadless();
 
 private:
diff --git a/indra/llwindow/llwindowsdl.cpp b/indra/llwindow/llwindowsdl.cpp
index eb689dc48c..cec2fa3e4d 100644
--- a/indra/llwindow/llwindowsdl.cpp
+++ b/indra/llwindow/llwindowsdl.cpp
@@ -57,7 +57,7 @@ extern "C" {
 # include <stdio.h>
 #endif // LL_LINUX
 
-extern BOOL gDebugWindowProc;
+extern bool gDebugWindowProc;
 
 const S32 MAX_NUM_RESOLUTIONS = 200;
 
@@ -70,7 +70,7 @@ static bool ATIbug = false;
 #include <CoreGraphics/CGDirectDisplay.h>
 #include <CoreServices/CoreServices.h>
 
-BOOL gHiDPISupport = TRUE;
+bool gHiDPISupport = true;
 
 namespace
 {
@@ -95,11 +95,11 @@ namespace
 // LLWindowMacOSX
 //
 
-BOOL LLWindowSDL::sUseMultGL = FALSE;
+bool LLWindowSDL::sUseMultGL = false;
 
 #endif
 
-BOOL hasHIDPI = 0;
+bool hasHIDPI = 0;
 
 //
 // LLWindowSDL
@@ -397,9 +397,9 @@ Display* LLWindowSDL::getSDLDisplay()
 LLWindowSDL::LLWindowSDL(LLWindowCallbacks* callbacks,
                          const std::string& title, S32 x, S32 y, S32 width,
                          S32 height, U32 flags,
-                         BOOL fullscreen, BOOL clearBg,
-                         BOOL disable_vsync, BOOL use_gl,
-                         BOOL ignore_pixel_depth, U32 fsaa_samples)
+                         bool fullscreen, bool clearBg,
+                         bool disable_vsync, bool use_gl,
+                         bool ignore_pixel_depth, U32 fsaa_samples)
         : LLWindow(callbacks, fullscreen, flags),
         Lock_Display(NULL),
         //Unlock_Display(NULL), mGamma(1.0f)
@@ -417,7 +417,7 @@ LLWindowSDL::LLWindowSDL(LLWindowCallbacks* callbacks,
     // Ignore use_gl for now, only used for drones on PC
     mWindow = NULL;
     mContext = {};
-    mNeedsResize = FALSE;
+    mNeedsResize = false;
     mOverrideAspectRatio = 0.f;
     mGrabbyKeyFlags = 0;
     mReallyCapturedCount = 0;
@@ -454,7 +454,7 @@ LLWindowSDL::LLWindowSDL(LLWindowCallbacks* callbacks,
     gWindowImplementation = this;
 
 #if LL_X11
-    mFlashing = FALSE;
+    mFlashing = false;
     initialiseX11Clipboard();
 #endif // LL_X11
 
@@ -675,7 +675,7 @@ void LLWindowSDL::tryFindFullscreenSize( int &width, int &height )
     }
 }
 
-BOOL LLWindowSDL::createContext(int x, int y, int width, int height, int bits, BOOL fullscreen, BOOL disable_vsync)
+bool LLWindowSDL::createContext(int x, int y, int width, int height, int bits, bool fullscreen, bool disable_vsync)
 {
     //bool          glneedsinit = false;
 
@@ -794,7 +794,7 @@ BOOL LLWindowSDL::createContext(int x, int y, int width, int height, int bits, B
         {
             LL_WARNS() << "Cannot create GL context " << SDL_GetError() << LL_ENDL;
             setupFailure("GL Context creation error creation error", "Error", OSMB_OK);
-            return FALSE;
+            return false;
         }
         // SDL_GL_SetSwapInterval(1);
     }
@@ -804,7 +804,7 @@ BOOL LLWindowSDL::createContext(int x, int y, int width, int height, int bits, B
     {
         if (mWindow)
         {
-            mFullscreen = TRUE;
+            mFullscreen = true;
             /*
             mFullscreenWidth = mSurface->w;
             mFullscreenHeight = mSurface->h;
@@ -823,7 +823,7 @@ BOOL LLWindowSDL::createContext(int x, int y, int width, int height, int bits, B
         {
             LL_WARNS() << "createContext: fullscreen creation failure. SDL: " << SDL_GetError() << LL_ENDL;
             // No fullscreen support
-            mFullscreen = FALSE;
+            mFullscreen = false;
             mFullscreenWidth   = -1;
             mFullscreenHeight  = -1;
             mFullscreenBits    = -1;
@@ -831,7 +831,7 @@ BOOL LLWindowSDL::createContext(int x, int y, int width, int height, int bits, B
 
             std::string error = llformat("Unable to run fullscreen at %d x %d.\nRunning in window.", width, height);
             OSMessageBox(error, "Error", OSMB_OK);
-            return FALSE;
+            return false;
         }
     }
     else
@@ -840,7 +840,7 @@ BOOL LLWindowSDL::createContext(int x, int y, int width, int height, int bits, B
         {
             LL_WARNS() << "createContext: window creation failure. SDL: " << SDL_GetError() << LL_ENDL;
             setupFailure("Window creation error", "Error", OSMB_OK);
-            return FALSE;
+            return false;
         }
     }
 
@@ -939,7 +939,7 @@ BOOL LLWindowSDL::createContext(int x, int y, int width, int height, int bits, B
                 "will automatically adjust the screen each time it runs.",
                 "Error",
                 OSMB_OK);
-        return FALSE;
+        return false;
 #endif
     }
 
@@ -976,15 +976,15 @@ BOOL LLWindowSDL::createContext(int x, int y, int width, int height, int bits, B
 #endif
 
     // Don't need to get the current gamma, since there's a call that restores it to the system defaults.
-    return TRUE;
+    return true;
 }
 
 
 // changing fullscreen resolution, or switching between windowed and fullscreen mode.
-BOOL LLWindowSDL::switchContext(BOOL fullscreen, const LLCoordScreen &size, BOOL disable_vsync, const LLCoordScreen * const posp)
+bool LLWindowSDL::switchContext(bool fullscreen, const LLCoordScreen &size, bool disable_vsync, const LLCoordScreen * const posp)
 {
-    const BOOL needsRebuild = TRUE;  // Just nuke the context and start over.
-    BOOL result = true;
+    const bool needsRebuild = true;  // Just nuke the context and start over.
+    bool result = true;
 
     LL_INFOS() << "switchContext, fullscreen=" << fullscreen << LL_ENDL;
     stop_glerror();
@@ -1092,86 +1092,86 @@ void LLWindowSDL::close()
     //  }
 
     // Make sure cursor is visible and we haven't mangled the clipping state.
-    setMouseClipping(FALSE);
+    setMouseClipping(false);
     showCursor();
 
     destroyContext();
 }
 
-BOOL LLWindowSDL::isValid()
+bool LLWindowSDL::isValid()
 {
     return (mWindow != NULL);
 }
 
-BOOL LLWindowSDL::getVisible()
+bool LLWindowSDL::getVisible()
 {
-    BOOL result = FALSE;
+    bool result = false;
 
     // *FIX: This isn't really right...
     // Then what is?
     if (mWindow)
     {
-        if( SDL_GetWindowFlags(mWindow) & SDL_WINDOW_SHOWN ) result = TRUE;
+        if( SDL_GetWindowFlags(mWindow) & SDL_WINDOW_SHOWN ) result = true;
     }
 
     return(result);
 }
 
-BOOL LLWindowSDL::getMinimized()
+bool LLWindowSDL::getMinimized()
 {
-    BOOL result = FALSE;
+    bool result = false;
 
     if (mWindow/*&& (1 == mIsMinimized)*/)
     {
-        if( SDL_GetWindowFlags(mWindow) & SDL_WINDOW_MINIMIZED ) result = TRUE;
+        if( SDL_GetWindowFlags(mWindow) & SDL_WINDOW_MINIMIZED ) result = true;
     }
 
     mIsMinimized = result;
     return(result);
 }
 
-BOOL LLWindowSDL::getMaximized()
+bool LLWindowSDL::getMaximized()
 {
-    BOOL result = FALSE;
+    bool result = false;
 
     if (mWindow)
     {
         // TODO
-        if( SDL_GetWindowFlags(mWindow) & SDL_WINDOW_MAXIMIZED ) result = TRUE;
-        else result = FALSE;
+        if( SDL_GetWindowFlags(mWindow) & SDL_WINDOW_MAXIMIZED ) result = true;
+        else result = false;
     }
 
     return(result);
 }
 
-BOOL LLWindowSDL::maximize()
+bool LLWindowSDL::maximize()
 {
     // TODO
-    BOOL result = FALSE;
+    bool result = false;
 
     if (mWindow)
     {
         SDL_MaximizeWindow(mWindow);
-        result = TRUE;
+        result = true;
     }
 
     return result;
 }
 
-BOOL LLWindowSDL::getFullscreen()
+bool LLWindowSDL::getFullscreen()
 {
     return mFullscreen;
 }
 
-BOOL LLWindowSDL::getPosition(LLCoordScreen *position)
+bool LLWindowSDL::getPosition(LLCoordScreen *position)
 {
     // *FIX: can anything be done with this?
     position->mX = 0;
     position->mY = 0;
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowSDL::getSize(LLCoordScreen *size)
+bool LLWindowSDL::getSize(LLCoordScreen *size)
 {
     if (mWindow)
     {
@@ -1181,13 +1181,13 @@ BOOL LLWindowSDL::getSize(LLCoordScreen *size)
         else
         */
         SDL_GetWindowSize(mWindow, &size->mX, &size->mY);
-        return (TRUE);
+        return (true);
     }
 
-    return (FALSE);
+    return (false);
 }
 
-BOOL LLWindowSDL::getSize(LLCoordWindow *size)
+bool LLWindowSDL::getSize(LLCoordWindow *size)
 {
     if (mWindow)
     {
@@ -1195,22 +1195,22 @@ BOOL LLWindowSDL::getSize(LLCoordWindow *size)
             SDL_GL_GetDrawableSize(mWindow, &size->mX, &size->mY);
         else
             SDL_GetWindowSize(mWindow, &size->mX, &size->mY);
-        return (TRUE);
+        return (true);
     }
 
-    return (FALSE);
+    return (false);
 }
 
-BOOL LLWindowSDL::setPosition(const LLCoordScreen position)
+bool LLWindowSDL::setPosition(const LLCoordScreen position)
 {
-    BOOL result = FALSE;
+    bool result = false;
 
     if(mWindow)
     {
         // *FIX: (?)
         //MacMoveWindow(mWindow, position.mX, position.mY, false);
         SDL_SetWindowPosition(mWindow, position.mX, position.mY);
-        result = TRUE;
+        result = true;
     }
 
     return result;
@@ -1239,12 +1239,12 @@ template< typename T > bool setSizeImpl( const T& newSize, SDL_Window *pWin )
     return true;
 }
 
-BOOL LLWindowSDL::setSizeImpl(const LLCoordScreen size)
+bool LLWindowSDL::setSizeImpl(const LLCoordScreen size)
 {
     return ::setSizeImpl( size, mWindow );
 }
 
-BOOL LLWindowSDL::setSizeImpl(const LLCoordWindow size)
+bool LLWindowSDL::setSizeImpl(const LLCoordWindow size)
 {
     return ::setSizeImpl( size, mWindow );
 }
@@ -1273,7 +1273,7 @@ F32 LLWindowSDL::getGamma()
     return 1/mGamma;
 }
 
-BOOL LLWindowSDL::restoreGamma()
+bool LLWindowSDL::restoreGamma()
 {
     //CGDisplayRestoreColorSyncSettings();
     // SDL_SetGamma(1.0f, 1.0f, 1.0f);
@@ -1283,7 +1283,7 @@ BOOL LLWindowSDL::restoreGamma()
     return true;
 }
 
-BOOL LLWindowSDL::setGamma(const F32 gamma)
+bool LLWindowSDL::setGamma(const F32 gamma)
 {
     mGamma = gamma;
     if (mGamma == 0) mGamma = 0.1f;
@@ -1295,7 +1295,7 @@ BOOL LLWindowSDL::setGamma(const F32 gamma)
     return true;
 }
 
-BOOL LLWindowSDL::isCursorHidden()
+bool LLWindowSDL::isCursorHidden()
 {
     return mCursorHidden;
 }
@@ -1303,7 +1303,7 @@ BOOL LLWindowSDL::isCursorHidden()
 
 
 // Constrains the mouse to the window.
-void LLWindowSDL::setMouseClipping( BOOL b )
+void LLWindowSDL::setMouseClipping( bool b )
 {
     //SDL_WM_GrabInput(b ? SDL_GRAB_ON : SDL_GRAB_OFF);
 }
@@ -1327,14 +1327,14 @@ void LLWindowSDL::setMinSize(U32 min_width, U32 min_height, bool enforce_immedia
 #endif
 }
 
-BOOL LLWindowSDL::setCursorPosition(const LLCoordWindow position)
+bool LLWindowSDL::setCursorPosition(const LLCoordWindow position)
 {
-    BOOL result = TRUE;
+    bool result = true;
     LLCoordScreen screen_pos;
 
     if (!convertCoords(position, &screen_pos))
     {
-        return FALSE;
+        return false;
     }
 
     //LL_INFOS() << "setCursorPosition(" << screen_pos.mX << ", " << screen_pos.mY << ")" << LL_ENDL;
@@ -1354,7 +1354,7 @@ BOOL LLWindowSDL::setCursorPosition(const LLCoordWindow position)
     return result;
 }
 
-BOOL LLWindowSDL::getCursorPosition(LLCoordWindow *position)
+bool LLWindowSDL::getCursorPosition(LLCoordWindow *position)
 {
     //Point cursor_point;
     LLCoordScreen screen_pos;
@@ -1429,7 +1429,7 @@ void LLWindowSDL::beforeDialog()
 
     LL_INFOS() << "LLWindowSDL::beforeDialog()" << LL_ENDL;
 
-    if (SDLReallyCaptureInput(FALSE)) // must ungrab input so popup works!
+    if (SDLReallyCaptureInput(false)) // must ungrab input so popup works!
     {
         if (mFullscreen)
         {
@@ -1482,7 +1482,7 @@ void LLWindowSDL::afterDialog()
 
 #if LL_X11
 // set/reset the XWMHints flag for 'urgency' that usually makes the icon flash
-void LLWindowSDL::x11_set_urgent(BOOL urgent)
+void LLWindowSDL::x11_set_urgent(bool urgent)
 {
     if (mSDL_Display && !mFullscreen)
     {
@@ -1523,13 +1523,13 @@ void LLWindowSDL::flashIcon(F32 seconds)
         mFlashTimer.reset();
         mFlashTimer.setTimerExpirySec(remaining_time);
 
-        x11_set_urgent(TRUE);
-        mFlashing = TRUE;
+        x11_set_urgent(true);
+        mFlashing = true;
 #endif // LL_X11
     }
 }
 
-BOOL LLWindowSDL::isClipboardTextAvailable()
+bool LLWindowSDL::isClipboardTextAvailable()
 {
 #if LL_X11
     return mSDL_Display && XGetSelectionOwner(mSDL_Display, XA_CLIPBOARD) != None;
@@ -1538,7 +1538,7 @@ BOOL LLWindowSDL::isClipboardTextAvailable()
 #endif
 }
 
-BOOL LLWindowSDL::pasteTextFromClipboard(LLWString &dst)
+bool LLWindowSDL::pasteTextFromClipboard(LLWString &dst)
 {
 #if LL_X11
     return getSelectionText(XA_CLIPBOARD, dst);
@@ -1548,13 +1548,13 @@ BOOL LLWindowSDL::pasteTextFromClipboard(LLWString &dst)
     {
         dst = LLWString(utf8str_to_wstring(data));
         SDL_free(data);
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 #endif
 }
 
-BOOL LLWindowSDL::copyTextToClipboard(const LLWString &s)
+bool LLWindowSDL::copyTextToClipboard(const LLWString &s)
 {
 #if LL_X11
     return setSelectionText(XA_CLIPBOARD, s);
@@ -1563,31 +1563,31 @@ BOOL LLWindowSDL::copyTextToClipboard(const LLWString &s)
 #endif
 }
 
-BOOL LLWindowSDL::isPrimaryTextAvailable()
+bool LLWindowSDL::isPrimaryTextAvailable()
 {
 #if LL_X11
     LLWString text;
     return getSelectionText(XA_PRIMARY, text) && !text.empty();
 #else
-    return FALSE; // unsupported
+    return false; // unsupported
 #endif
 }
 
-BOOL LLWindowSDL::pasteTextFromPrimary(LLWString &dst)
+bool LLWindowSDL::pasteTextFromPrimary(LLWString &dst)
 {
 #if LL_X11
     return getSelectionText(XA_PRIMARY, dst);
 #else
-    return FALSE; // unsupported
+    return false; // unsupported
 #endif
 }
 
-BOOL LLWindowSDL::copyTextToPrimary(const LLWString &s)
+bool LLWindowSDL::copyTextToPrimary(const LLWString &s)
 {
 #if LL_X11
     return setSelectionText(XA_PRIMARY, s);
 #else
-    return FALSE; // unsupported
+    return false; // unsupported
 #endif
 }
 
@@ -1631,62 +1631,62 @@ LLWindow::LLWindowResolution* LLWindowSDL::getSupportedResolutions(S32 &num_reso
     return mSupportedResolutions;
 }
 
-BOOL LLWindowSDL::convertCoords(LLCoordGL from, LLCoordWindow *to)
+bool LLWindowSDL::convertCoords(LLCoordGL from, LLCoordWindow *to)
 {
     if (!to)
-        return FALSE;
+        return false;
 
     to->mX = from.mX;
     int h;
     SDL_GetWindowSize(mWindow, nullptr, &h);
     to->mY = h - from.mY - 1;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowSDL::convertCoords(LLCoordWindow from, LLCoordGL* to)
+bool LLWindowSDL::convertCoords(LLCoordWindow from, LLCoordGL* to)
 {
     if (!to)
-        return FALSE;
+        return false;
 
     to->mX = from.mX;
     int h;
     SDL_GetWindowSize(mWindow, nullptr, &h);
     to->mY = h - from.mY - 1;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowSDL::convertCoords(LLCoordScreen from, LLCoordWindow* to)
+bool LLWindowSDL::convertCoords(LLCoordScreen from, LLCoordWindow* to)
 {
     if (!to)
-        return FALSE;
+        return false;
 
     // In the fullscreen case, window and screen coordinates are the same.
     to->mX = from.mX;
     to->mY = from.mY;
-    return (TRUE);
+    return (true);
 }
 
-BOOL LLWindowSDL::convertCoords(LLCoordWindow from, LLCoordScreen *to)
+bool LLWindowSDL::convertCoords(LLCoordWindow from, LLCoordScreen *to)
 {
     if (!to)
-        return FALSE;
+        return false;
 
     // In the fullscreen case, window and screen coordinates are the same.
     to->mX = from.mX;
     to->mY = from.mY;
-    return (TRUE);
+    return (true);
 }
 
-BOOL LLWindowSDL::convertCoords(LLCoordScreen from, LLCoordGL *to)
+bool LLWindowSDL::convertCoords(LLCoordScreen from, LLCoordGL *to)
 {
     LLCoordWindow window_coord;
 
     return(convertCoords(from, &window_coord) && convertCoords(window_coord, to));
 }
 
-BOOL LLWindowSDL::convertCoords(LLCoordGL from, LLCoordScreen *to)
+bool LLWindowSDL::convertCoords(LLCoordGL from, LLCoordScreen *to)
 {
     LLCoordWindow window_coord;
 
@@ -1703,7 +1703,7 @@ void LLWindowSDL::setupFailure(const std::string& text, const std::string& capti
     OSMessageBox(text, caption, type);
 }
 
-BOOL LLWindowSDL::SDLReallyCaptureInput(BOOL capture)
+bool LLWindowSDL::SDLReallyCaptureInput(bool capture)
 {
     // note: this used to be safe to call nestedly, but in the
     // end that's not really a wise usage pattern, so don't.
@@ -1775,7 +1775,7 @@ BOOL LLWindowSDL::SDLReallyCaptureInput(BOOL capture)
     return capture == newGrab;
 }
 
-U32 LLWindowSDL::SDLCheckGrabbyKeys(U32 keysym, BOOL gain)
+U32 LLWindowSDL::SDLCheckGrabbyKeys(U32 keysym, bool gain)
 {
     /* part of the fix for SL-13243: Some popular window managers like
        to totally eat alt-drag for the purposes of moving windows.  We
@@ -1923,7 +1923,7 @@ void LLWindowSDL::processMiscNativeEvents()
     pump_timer.setTimerExpirySec(1.0f / 15.0f);
     do
     {
-        g_main_context_iteration(g_main_context_default(), FALSE);
+        g_main_context_iteration(g_main_context_default(), false);
     } while( g_main_context_pending(g_main_context_default()) && !pump_timer.hasExpired());
 #endif
 
@@ -1964,7 +1964,7 @@ void LLWindowSDL::gatherInput()
 
                 //LL_INFOS() << "SDL_MOUSEMOTION " << event.button.x << " " << event.button.y << " gl " << openGlCoord.mX << " " << openGlCoord.mY << LL_ENDL;
 
-                MASK mask = gKeyboard->currentMask(TRUE);
+                MASK mask = gKeyboard->currentMask(true);
                 mCallbacks->handleMouseMove(this, openGlCoord, mask);
                 break;
             }
@@ -1972,7 +1972,7 @@ void LLWindowSDL::gatherInput()
             case SDL_TEXTINPUT:
             {
                 auto string = utf8str_to_utf16str( event.text.text );
-                mKeyModifiers = gKeyboard->currentMask( FALSE );
+                mKeyModifiers = gKeyboard->currentMask( false );
                 mInputType = "textinput";
                 for( auto key: string )
                 {
@@ -2010,8 +2010,8 @@ void LLWindowSDL::gatherInput()
                 }
 
                 // part of the fix for SL-13243
-                if (SDLCheckGrabbyKeys(event.key.keysym.sym, TRUE) != 0)
-                    SDLReallyCaptureInput(TRUE);
+                if (SDLCheckGrabbyKeys(event.key.keysym.sym, true) != 0)
+                    SDLReallyCaptureInput(true);
 
                 break;
 
@@ -2026,8 +2026,8 @@ void LLWindowSDL::gatherInput()
                     mKeyVirtualKey = SDLK_RETURN;
                 }
 
-                if (SDLCheckGrabbyKeys(mKeyVirtualKey, FALSE) == 0)
-                    SDLReallyCaptureInput(FALSE); // part of the fix for SL-13243
+                if (SDLCheckGrabbyKeys(mKeyVirtualKey, false) == 0)
+                    SDLReallyCaptureInput(false); // part of the fix for SL-13243
 
                 gKeyboard->handleKeyUp(mKeyVirtualKey,mKeyModifiers);
                 break;
@@ -2042,7 +2042,7 @@ void LLWindowSDL::gatherInput()
                 openGlCoord.mX *= getSystemUISize();
                 openGlCoord.mY *= getSystemUISize();
 
-                MASK mask = gKeyboard->currentMask(TRUE);
+                MASK mask = gKeyboard->currentMask(true);
 
                 if (event.button.button == SDL_BUTTON_LEFT)   // SDL doesn't manage double clicking...
                 {
@@ -2109,7 +2109,7 @@ void LLWindowSDL::gatherInput()
                 openGlCoord.mX *= getSystemUISize();
                 openGlCoord.mY *= getSystemUISize();
 
-                MASK mask = gKeyboard->currentMask(TRUE);
+                MASK mask = gKeyboard->currentMask(true);
 
                 if (event.button.button == SDL_BUTTON_LEFT)  // left
                     mCallbacks->handleMouseUp(this, openGlCoord, mask);
@@ -2143,13 +2143,13 @@ void LLWindowSDL::gatherInput()
                 {
                     LL_INFOS() << "SDL_WINDOWEVENT_ENTER" << LL_ENDL;
                     if(!mHaveInputFocus) mCallbacks->handleFocus(this);
-                    mHaveInputFocus = TRUE;
+                    mHaveInputFocus = true;
                 }
                 else if(event.window.event == SDL_WINDOWEVENT_LEAVE)
                 {
                     LL_INFOS() << "SDL_WINDOWEVENT_LEAVE" << LL_ENDL;
                     if(mHaveInputFocus) mCallbacks->handleFocusLost(this);
-                    mHaveInputFocus = FALSE;
+                    mHaveInputFocus = false;
                 }
                 else if( event.window.event == SDL_WINDOWEVENT_FOCUS_GAINED ) // <FS:ND> What about SDL_WINDOWEVENT_ENTER (mouse focus)
                 {
@@ -2176,14 +2176,14 @@ void LLWindowSDL::gatherInput()
                 else if(event.window.event == SDL_WINDOWEVENT_MINIMIZED)
                 {
                     LL_INFOS() << "SDL_WINDOWEVENT_MINIMIZED" << LL_ENDL;
-                    if(!mIsMinimized) mCallbacks->handleActivate(this,FALSE);
-                    mIsMinimized = TRUE;
+                    if(!mIsMinimized) mCallbacks->handleActivate(this,false);
+                    mIsMinimized = true;
                 }
                 else if(event.window.event == SDL_WINDOWEVENT_MAXIMIZED)
                 {
                     LL_INFOS() << "SDL_WINDOWEVENT_MAXIMIZED" << LL_ENDL;
-                    if(mIsMinimized) mCallbacks->handleActivate(this,TRUE);
-                    mIsMinimized = FALSE;
+                    if(mIsMinimized) mCallbacks->handleActivate(this,true);
+                    mIsMinimized = false;
                 }
                 */
                 else if (event.window.event == SDL_WINDOWEVENT_EXPOSED)
@@ -2228,8 +2228,8 @@ void LLWindowSDL::gatherInput()
     // expired.
     if (mFlashing && mFlashTimer.hasExpired())
     {
-        x11_set_urgent(FALSE);
-        mFlashing = FALSE;
+        x11_set_urgent(false);
+        mFlashing = false;
     }
 #endif // LL_X11
 }
@@ -2280,10 +2280,10 @@ static SDL_Cursor *makeSDLCursorFromBMP(const char *filename, int hotx, int hoty
                     U8 srcred = pixelp[0];
                     U8 srcgreen = pixelp[1];
                     U8 srcblue = pixelp[2];
-                    BOOL mask_bit = (srcred != 200)
+                    bool mask_bit = (srcred != 200)
                                     || (srcgreen != 200)
                                     || (srcblue != 200);
-                    BOOL data_bit = mask_bit && (srcgreen <= 80);//not 0x80
+                    bool data_bit = mask_bit && (srcgreen <= 80);//not 0x80
                     unsigned char bit_offset = (cursurface->w/8) * i
                                                + j/8;
                     cursor_data[bit_offset] |= (data_bit) << (7 - (j&7));
@@ -2442,8 +2442,8 @@ void LLWindowSDL::hideCursor()
     if(!mCursorHidden)
     {
         // LL_INFOS() << "hideCursor: hiding" << LL_ENDL;
-        mCursorHidden = TRUE;
-        mHideCursorPermanent = TRUE;
+        mCursorHidden = true;
+        mHideCursorPermanent = true;
         SDL_ShowCursor(0);
     }
     else
@@ -2457,8 +2457,8 @@ void LLWindowSDL::showCursor()
     if(mCursorHidden)
     {
         // LL_INFOS() << "showCursor: showing" << LL_ENDL;
-        mCursorHidden = FALSE;
-        mHideCursorPermanent = FALSE;
+        mCursorHidden = false;
+        mHideCursorPermanent = false;
         SDL_ShowCursor(1);
     }
     else
@@ -2480,7 +2480,7 @@ void LLWindowSDL::hideCursorUntilMouseMove()
     if (!mHideCursorPermanent)
     {
         hideCursor();
-        mHideCursorPermanent = FALSE;
+        mHideCursorPermanent = false;
     }
 }
 
@@ -2541,9 +2541,9 @@ S32 OSMessageBoxSDL(const std::string& text, const std::string& caption, U32 typ
     return OSBTN_CANCEL;
 }
 
-BOOL LLWindowSDL::dialogColorPicker( F32 *r, F32 *g, F32 *b)
+bool LLWindowSDL::dialogColorPicker( F32 *r, F32 *g, F32 *b)
 {
-    return (FALSE);
+    return (false);
 }
 
 #if LL_DARWIN
@@ -2743,7 +2743,7 @@ void LLWindowSDL::spawnWebBrowser(const std::string& escaped_url, bool async)
 
 void LLWindowSDL::openFile(const std::string& file_name)
 {
-    spawnWebBrowser("file://"+file_name,TRUE);
+    spawnWebBrowser("file://"+file_name,true);
 }
 
 void *LLWindowSDL::getPlatformWindow()
diff --git a/indra/llwindow/llwindowsdl.h b/indra/llwindow/llwindowsdl.h
index 87a3e15731..8d4aeb5efb 100644
--- a/indra/llwindow/llwindowsdl.h
+++ b/indra/llwindow/llwindowsdl.h
@@ -58,38 +58,38 @@ public:
 
     void close() override;
 
-    BOOL getVisible() override;
+    bool getVisible() override;
 
-    BOOL getMinimized() override;
+    bool getMinimized() override;
 
-    BOOL getMaximized() override;
+    bool getMaximized() override;
 
-    BOOL maximize() override;
+    bool maximize() override;
 
     void minimize() override;
 
     void restore() override;
 
-    BOOL getFullscreen();
+    bool getFullscreen();
 
-    BOOL getPosition(LLCoordScreen *position) override;
+    bool getPosition(LLCoordScreen *position) override;
 
-    BOOL getSize(LLCoordScreen *size) override;
+    bool getSize(LLCoordScreen *size) override;
 
-    BOOL getSize(LLCoordWindow *size) override;
+    bool getSize(LLCoordWindow *size) override;
 
-    BOOL setPosition(LLCoordScreen position) override;
+    bool setPosition(LLCoordScreen position) override;
 
-    BOOL setSizeImpl(LLCoordScreen size) override;
+    bool setSizeImpl(LLCoordScreen size) override;
 
-    BOOL setSizeImpl(LLCoordWindow size) override;
+    bool setSizeImpl(LLCoordWindow size) override;
 
-    BOOL switchContext(BOOL fullscreen, const LLCoordScreen &size, BOOL disable_vsync,
+    bool switchContext(bool fullscreen, const LLCoordScreen &size, bool disable_vsync,
                                    const LLCoordScreen *const posp = NULL) override;
 
-    BOOL setCursorPosition(LLCoordWindow position) override;
+    bool setCursorPosition(LLCoordWindow position) override;
 
-    BOOL getCursorPosition(LLCoordWindow *position) override;
+    bool getCursorPosition(LLCoordWindow *position) override;
 
     void showCursor() override;
 
@@ -99,7 +99,7 @@ public:
 
     void hideCursorUntilMouseMove() override;
 
-    BOOL isCursorHidden() override;
+    bool isCursorHidden() override;
 
     void updateCursor() override;
 
@@ -107,32 +107,32 @@ public:
 
     void releaseMouse() override;
 
-    void setMouseClipping(BOOL b) override;
+    void setMouseClipping(bool b) override;
 
        void setMinSize(U32 min_width, U32 min_height, bool enforce_immediately = true) override;
 
-    BOOL isClipboardTextAvailable() override;
+    bool isClipboardTextAvailable() override;
 
-    BOOL pasteTextFromClipboard(LLWString &dst) override;
+    bool pasteTextFromClipboard(LLWString &dst) override;
 
-    BOOL copyTextToClipboard(const LLWString &src) override;
+    bool copyTextToClipboard(const LLWString &src) override;
 
-    BOOL isPrimaryTextAvailable() override;
+    bool isPrimaryTextAvailable() override;
 
-    BOOL pasteTextFromPrimary(LLWString &dst) override;
+    bool pasteTextFromPrimary(LLWString &dst) override;
 
-    BOOL copyTextToPrimary(const LLWString &src) override;
+    bool copyTextToPrimary(const LLWString &src) override;
 
     void flashIcon(F32 seconds) override;
 
     F32 getGamma() override;
 
-    BOOL setGamma(const F32 gamma) override; // Set the gamma
+    bool setGamma(const F32 gamma) override; // Set the gamma
     U32 getFSAASamples() override;
 
     void setFSAASamples(const U32 samples) override;
 
-    BOOL restoreGamma() override;            // Restore original gamma table (before updating gamma)
+    bool restoreGamma() override;            // Restore original gamma table (before updating gamma)
     ESwapMethod getSwapMethod()  override { return mSwapMethod; }
 
     void processMiscNativeEvents() override;
@@ -146,17 +146,17 @@ public:
     void delayInputProcessing()  override {};
 
     // handy coordinate space conversion routines
-    BOOL convertCoords(LLCoordScreen from, LLCoordWindow *to) override;
+    bool convertCoords(LLCoordScreen from, LLCoordWindow *to) override;
 
-    BOOL convertCoords(LLCoordWindow from, LLCoordScreen *to) override;
+    bool convertCoords(LLCoordWindow from, LLCoordScreen *to) override;
 
-    BOOL convertCoords(LLCoordWindow from, LLCoordGL *to) override;
+    bool convertCoords(LLCoordWindow from, LLCoordGL *to) override;
 
-    BOOL convertCoords(LLCoordGL from, LLCoordWindow *to) override;
+    bool convertCoords(LLCoordGL from, LLCoordWindow *to) override;
 
-    BOOL convertCoords(LLCoordScreen from, LLCoordGL *to) override;
+    bool convertCoords(LLCoordScreen from, LLCoordGL *to) override;
 
-    BOOL convertCoords(LLCoordGL from, LLCoordScreen *to) override;
+    bool convertCoords(LLCoordGL from, LLCoordScreen *to) override;
 
     LLWindowResolution *getSupportedResolutions(S32 &num_resolutions) override;
 
@@ -172,7 +172,7 @@ public:
 
     void afterDialog() override;
 
-    BOOL dialogColorPicker(F32 *r, F32 *g, F32 *b) override;
+    bool dialogColorPicker(F32 *r, F32 *g, F32 *b) override;
 
     void *getPlatformWindow() override;
 
@@ -208,7 +208,7 @@ public:
 #endif // LL_X11
 
 #if LL_DARWIN
-    static BOOL sUseMultGL;
+    static bool sUseMultGL;
 #endif
 
     void *createSharedContext() override;
@@ -224,12 +224,12 @@ public:
 protected:
     LLWindowSDL(LLWindowCallbacks *callbacks,
                 const std::string &title, int x, int y, int width, int height, U32 flags,
-                BOOL fullscreen, BOOL clearBg, BOOL disable_vsync, BOOL use_gl,
-                BOOL ignore_pixel_depth, U32 fsaa_samples);
+                bool fullscreen, bool clearBg, bool disable_vsync, bool use_gl,
+                bool ignore_pixel_depth, U32 fsaa_samples);
 
     ~LLWindowSDL();
 
-    BOOL isValid() override;
+    bool isValid() override;
 
     LLSD getNativeKeyData() override;
 
@@ -240,12 +240,12 @@ protected:
     void moveWindow(const LLCoordScreen &position, const LLCoordScreen &size);
 
     // Changes display resolution. Returns true if successful
-    BOOL setDisplayResolution(S32 width, S32 height, S32 bits, S32 refresh);
+    bool setDisplayResolution(S32 width, S32 height, S32 bits, S32 refresh);
 
     // Go back to last fullscreen display resolution.
-    BOOL setFullscreenResolution();
+    bool setFullscreenResolution();
 
-    BOOL shouldPostQuit() { return mPostQuit; }
+    bool shouldPostQuit() { return mPostQuit; }
 
 protected:
     //
@@ -253,7 +253,7 @@ protected:
     //
 
     // create or re-create the GL context/window.  Called from the constructor and switchContext().
-    BOOL createContext(int x, int y, int width, int height, int bits, BOOL fullscreen, BOOL disable_vsync);
+    bool createContext(int x, int y, int width, int height, int bits, bool fullscreen, bool disable_vsync);
 
     void destroyContext();
 
@@ -261,9 +261,9 @@ protected:
 
     void fixWindowSize(void);
 
-    U32 SDLCheckGrabbyKeys(U32 keysym, BOOL gain);
+    U32 SDLCheckGrabbyKeys(U32 keysym, bool gain);
 
-    BOOL SDLReallyCaptureInput(BOOL capture);
+    bool SDLReallyCaptureInput(bool capture);
 
     //
     // Platform specific variables
@@ -277,7 +277,7 @@ protected:
 
     std::string mWindowTitle;
     double mOriginalAspectRatio;
-    BOOL mNeedsResize;        // Constructor figured out the window is too big, it needs a resize.
+    bool mNeedsResize;        // Constructor figured out the window is too big, it needs a resize.
     LLCoordScreen mNeedsResizeSize;
     F32 mOverrideAspectRatio;
     F32 mGamma;
@@ -294,9 +294,9 @@ protected:
 private:
 #if LL_X11
 
-    void x11_set_urgent(BOOL urgent);
+    void x11_set_urgent(bool urgent);
 
-    BOOL mFlashing;
+    bool mFlashing;
     LLTimer mFlashTimer;
 #endif //LL_X11
 
diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index 12cd5320b8..fee0de7739 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -92,7 +92,7 @@ const F32   ICON_FLASH_TIME = 0.5f;
 const UINT WM_DUMMY_(WM_USER + 0x0017);
 const UINT WM_POST_FUNCTION_(WM_USER + 0x0018);
 
-extern BOOL gDebugWindowProc;
+extern bool gDebugWindowProc;
 
 static std::thread::id sWindowThreadId;
 static std::thread::id sMainThreadId;
@@ -167,10 +167,10 @@ GLuint SafeChoosePixelFormat(HDC &hdc, const PIXELFORMATDESCRIPTOR *ppfd)
 }
 
 //static
-BOOL LLWindowWin32::sIsClassRegistered = FALSE;
+bool LLWindowWin32::sIsClassRegistered = false;
 
-BOOL    LLWindowWin32::sLanguageTextInputAllowed = TRUE;
-BOOL    LLWindowWin32::sWinIMEOpened = FALSE;
+bool    LLWindowWin32::sLanguageTextInputAllowed = true;
+bool    LLWindowWin32::sWinIMEOpened = false;
 HKL     LLWindowWin32::sWinInputLocale = 0;
 DWORD   LLWindowWin32::sWinIMEConversionMode = IME_CMODE_NATIVE;
 DWORD   LLWindowWin32::sWinIMESentenceMode = IME_SMODE_AUTOMATIC;
@@ -189,24 +189,24 @@ public:
 
 public:
     // Wrappers for IMM API.
-    static BOOL     isIME(HKL hkl);
+    static bool     isIME(HKL hkl);
     static HIMC     getContext(HWND hwnd);
-    static BOOL     releaseContext(HWND hwnd, HIMC himc);
-    static BOOL     getOpenStatus(HIMC himc);
-    static BOOL     setOpenStatus(HIMC himc, BOOL status);
-    static BOOL     getConversionStatus(HIMC himc, LPDWORD conversion, LPDWORD sentence);
-    static BOOL     setConversionStatus(HIMC himc, DWORD conversion, DWORD sentence);
-    static BOOL     getCompositionWindow(HIMC himc, LPCOMPOSITIONFORM form);
-    static BOOL     setCompositionWindow(HIMC himc, LPCOMPOSITIONFORM form);
+    static bool     releaseContext(HWND hwnd, HIMC himc);
+    static bool     getOpenStatus(HIMC himc);
+    static bool     setOpenStatus(HIMC himc, bool status);
+    static bool     getConversionStatus(HIMC himc, LPDWORD conversion, LPDWORD sentence);
+    static bool     setConversionStatus(HIMC himc, DWORD conversion, DWORD sentence);
+    static bool     getCompositionWindow(HIMC himc, LPCOMPOSITIONFORM form);
+    static bool     setCompositionWindow(HIMC himc, LPCOMPOSITIONFORM form);
     static LONG     getCompositionString(HIMC himc, DWORD index, LPVOID data, DWORD length);
-    static BOOL     setCompositionString(HIMC himc, DWORD index, LPVOID pComp, DWORD compLength, LPVOID pRead, DWORD readLength);
-    static BOOL     setCompositionFont(HIMC himc, LPLOGFONTW logfont);
-    static BOOL     setCandidateWindow(HIMC himc, LPCANDIDATEFORM candidate_form);
-    static BOOL     notifyIME(HIMC himc, DWORD action, DWORD index, DWORD value);
+    static bool     setCompositionString(HIMC himc, DWORD index, LPVOID pComp, DWORD compLength, LPVOID pRead, DWORD readLength);
+    static bool     setCompositionFont(HIMC himc, LPLOGFONTW logfont);
+    static bool     setCandidateWindow(HIMC himc, LPCANDIDATEFORM candidate_form);
+    static bool     notifyIME(HIMC himc, DWORD action, DWORD index, DWORD value);
 };
 
 // static
-BOOL    LLWinImm::isIME(HKL hkl)
+bool    LLWinImm::isIME(HKL hkl)
 {
     return ImmIsIME(hkl);
 }
@@ -218,43 +218,43 @@ HIMC        LLWinImm::getContext(HWND hwnd)
 }
 
 //static
-BOOL        LLWinImm::releaseContext(HWND hwnd, HIMC himc)
+bool        LLWinImm::releaseContext(HWND hwnd, HIMC himc)
 {
     return ImmReleaseContext(hwnd, himc);
 }
 
 // static
-BOOL        LLWinImm::getOpenStatus(HIMC himc)
+bool        LLWinImm::getOpenStatus(HIMC himc)
 {
     return ImmGetOpenStatus(himc);
 }
 
 // static
-BOOL        LLWinImm::setOpenStatus(HIMC himc, BOOL status)
+bool        LLWinImm::setOpenStatus(HIMC himc, bool status)
 {
     return ImmSetOpenStatus(himc, status);
 }
 
 // static
-BOOL        LLWinImm::getConversionStatus(HIMC himc, LPDWORD conversion, LPDWORD sentence)
+bool        LLWinImm::getConversionStatus(HIMC himc, LPDWORD conversion, LPDWORD sentence)
 {
     return ImmGetConversionStatus(himc, conversion, sentence);
 }
 
 // static
-BOOL        LLWinImm::setConversionStatus(HIMC himc, DWORD conversion, DWORD sentence)
+bool        LLWinImm::setConversionStatus(HIMC himc, DWORD conversion, DWORD sentence)
 {
     return ImmSetConversionStatus(himc, conversion, sentence);
 }
 
 // static
-BOOL        LLWinImm::getCompositionWindow(HIMC himc, LPCOMPOSITIONFORM form)
+bool        LLWinImm::getCompositionWindow(HIMC himc, LPCOMPOSITIONFORM form)
 {
     return ImmGetCompositionWindow(himc, form);
 }
 
 // static
-BOOL        LLWinImm::setCompositionWindow(HIMC himc, LPCOMPOSITIONFORM form)
+bool        LLWinImm::setCompositionWindow(HIMC himc, LPCOMPOSITIONFORM form)
 {
     return ImmSetCompositionWindow(himc, form);
 }
@@ -268,25 +268,25 @@ LONG        LLWinImm::getCompositionString(HIMC himc, DWORD index, LPVOID data,
 
 
 // static
-BOOL        LLWinImm::setCompositionString(HIMC himc, DWORD index, LPVOID pComp, DWORD compLength, LPVOID pRead, DWORD readLength)
+bool        LLWinImm::setCompositionString(HIMC himc, DWORD index, LPVOID pComp, DWORD compLength, LPVOID pRead, DWORD readLength)
 {
     return ImmSetCompositionString(himc, index, pComp, compLength, pRead, readLength);
 }
 
 // static
-BOOL        LLWinImm::setCompositionFont(HIMC himc, LPLOGFONTW pFont)
+bool        LLWinImm::setCompositionFont(HIMC himc, LPLOGFONTW pFont)
 {
     return ImmSetCompositionFont(himc, pFont);
 }
 
 // static
-BOOL        LLWinImm::setCandidateWindow(HIMC himc, LPCANDIDATEFORM form)
+bool        LLWinImm::setCandidateWindow(HIMC himc, LPCANDIDATEFORM form)
 {
     return ImmSetCandidateWindow(himc, form);
 }
 
 // static
-BOOL        LLWinImm::notifyIME(HIMC himc, DWORD action, DWORD index, DWORD value)
+bool        LLWinImm::notifyIME(HIMC himc, DWORD action, DWORD index, DWORD value)
 {
     return ImmNotifyIME(himc, action, index, value);
 }
@@ -350,22 +350,8 @@ struct LLWindowWin32::LLWindowWin32Thread : public LL::ThreadPool
         mGLReady = true;
     }
 
-    // initialzie DXGI adapter (for querying available VRAM)
-    void initDX();
-
-    // initialize D3D (if DXGI cannot be used)
-    void initD3D();
-
-    //clean up DXGI/D3D resources
-    void cleanupDX();
-
-    // call periodically to update available VRAM
-    void updateVRAMUsage();
-
-    U32 getAvailableVRAMMegabytes()
-    {
-        return mAvailableVRAM;
-    }
+    // Use DXGI to check memory (because WMI doesn't report more than 4Gb)
+    void checkDXMem();
 
     /// called by main thread to post work to this window thread
     template <typename CALLABLE>
@@ -407,33 +393,24 @@ struct LLWindowWin32::LLWindowWin32Thread : public LL::ThreadPool
 
     using FuncType = std::function<void()>;
     // call GetMessage() and pull enqueue messages for later processing
-    void gatherInput();
     HWND mWindowHandleThrd = NULL;
     HDC mhDCThrd = 0;
 
     // *HACK: Attempt to prevent startup crashes by deferring memory accounting
     // until after some graphics setup. See SL-20177. -Cosmic,2023-09-18
     bool mGLReady = false;
-    // best guess at available video memory in MB
-    std::atomic<U32> mAvailableVRAM;
-
-    U32 mMaxVRAM = 0; // maximum amount of vram to allow in the "budget", or 0 for no maximum (see updateVRAMUsage)
-
-    IDXGIAdapter3* mDXGIAdapter = nullptr;
-    LPDIRECT3D9 mD3D = nullptr;
-    LPDIRECT3DDEVICE9 mD3DDevice = nullptr;
+    bool mGotGLBuffer = false;
 };
 
 
 LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
                              const std::string& title, const std::string& name, S32 x, S32 y, S32 width,
                              S32 height, U32 flags,
-                             BOOL fullscreen, BOOL clearBg,
-                             BOOL enable_vsync, BOOL use_gl,
-                             BOOL ignore_pixel_depth,
+                             bool fullscreen, bool clearBg,
+                             bool enable_vsync, bool use_gl,
+                             bool ignore_pixel_depth,
                              U32 fsaa_samples,
                              U32 max_cores,
-                             U32 max_vram,
                              F32 max_gl_version)
     :
     LLWindow(callbacks, fullscreen, flags),
@@ -442,7 +419,6 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
 {
     sMainThreadId = LLThread::currentID();
     mWindowThread = new LLWindowWin32Thread();
-    mWindowThread->mMaxVRAM = max_vram;
 
     //MAINT-516 -- force a load of opengl32.dll just in case windows went sideways
     LoadLibrary(L"opengl32.dll");
@@ -454,7 +430,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
         mMaxCores = llmin(mMaxCores, (U32) 64);
         DWORD_PTR mask = 0;
 
-        for (int i = 0; i < mMaxCores; ++i)
+        for (U32 i = 0; i < mMaxCores; ++i)
         {
             mask |= ((DWORD_PTR) 1) << i;
         }
@@ -523,7 +499,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
     mIconResource = gIconResource;
     mOverrideAspectRatio = 0.f;
     mNativeAspectRatio = 0.f;
-    mInputProcessingPaused = FALSE;
+    mInputProcessingPaused = false;
     mPreeditor = NULL;
     mKeyCharCode = 0;
     mKeyScanCode = 0;
@@ -532,7 +508,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
     mhRC = NULL;
     memset(mCurrentGammaRamp, 0, sizeof(mCurrentGammaRamp));
     memset(mPrevGammaRamp, 0, sizeof(mPrevGammaRamp));
-    mCustomGammaSet = FALSE;
+    mCustomGammaSet = false;
     mWindowHandle = NULL;
 
     mRect = {0, 0, 0, 0};
@@ -540,7 +516,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
 
     if (!SystemParametersInfo(SPI_GETMOUSEVANISH, 0, &mMouseVanish, 0))
     {
-        mMouseVanish = TRUE;
+        mMouseVanish = true;
     }
 
     // Initialize the keyboard
@@ -552,7 +528,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
 
     // Initialize (boot strap) the Language text input management,
     // based on the system's (user's) default settings.
-    allowLanguageTextInput(mPreeditor, FALSE);
+    allowLanguageTextInput(mPreeditor, false);
 
     WNDCLASS        wc;
     RECT            window_rect;
@@ -670,7 +646,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
                 mCallbacks->translateString("MBError"), OSMB_OK);
             return;
         }
-        sIsClassRegistered = TRUE;
+        sIsClassRegistered = true;
     }
 
     //-----------------------------------------------------------------------
@@ -698,7 +674,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
     //-----------------------------------------------------------------------
     if (mFullscreen)
     {
-        BOOL success = FALSE;
+        bool success = false;
         DWORD closest_refresh = 0;
 
         for (S32 mode_num = 0;; mode_num++)
@@ -712,7 +688,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
                 dev_mode.dmPelsHeight == height &&
                 dev_mode.dmBitsPerPel == BITS_PER_PIXEL)
             {
-                success = TRUE;
+                success = true;
                 if ((dev_mode.dmDisplayFrequency - current_refresh)
                     < (closest_refresh - current_refresh))
                 {
@@ -724,11 +700,11 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
         if (closest_refresh == 0)
         {
             LL_WARNS("Window") << "Couldn't find display mode " << width << " by " << height << " at " << BITS_PER_PIXEL << " bits per pixel" << LL_ENDL;
-            //success = FALSE;
+            //success = false;
 
             if (!EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dev_mode))
             {
-                success = FALSE;
+                success = false;
             }
             else
             {
@@ -737,12 +713,12 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
                     LL_WARNS("Window") << "Current BBP is OK falling back to that" << LL_ENDL;
                     window_rect.right=width=dev_mode.dmPelsWidth;
                     window_rect.bottom=height=dev_mode.dmPelsHeight;
-                    success = TRUE;
+                    success = true;
                 }
                 else
                 {
                     LL_WARNS("Window") << "Current BBP is BAD" << LL_ENDL;
-                    success = FALSE;
+                    success = false;
                 }
             }
         }
@@ -760,7 +736,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
         // If it failed, we don't want to run fullscreen
         if (success)
         {
-            mFullscreen = TRUE;
+            mFullscreen = true;
             mFullscreenWidth   = dev_mode.dmPelsWidth;
             mFullscreenHeight  = dev_mode.dmPelsHeight;
             mFullscreenBits    = dev_mode.dmBitsPerPel;
@@ -774,7 +750,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
         }
         else
         {
-            mFullscreen = FALSE;
+            mFullscreen = false;
             mFullscreenWidth   = -1;
             mFullscreenHeight  = -1;
             mFullscreenBits    = -1;
@@ -855,7 +831,7 @@ LLWindowWin32::LLWindowWin32(LLWindowCallbacks* callbacks,
 
     // Initialize (boot strap) the Language text input management,
     // based on the system's (or user's) default settings.
-    allowLanguageTextInput(NULL, FALSE);
+    allowLanguageTextInput(NULL, false);
 }
 
 
@@ -885,14 +861,14 @@ void LLWindowWin32::show()
 
 void LLWindowWin32::hide()
 {
-    setMouseClipping(FALSE);
+    setMouseClipping(false);
     ShowWindow(mWindowHandle, SW_HIDE);
 }
 
 //virtual
 void LLWindowWin32::minimize()
 {
-    setMouseClipping(FALSE);
+    setMouseClipping(false);
     showCursor();
     ShowWindow(mWindowHandle, SW_MINIMIZE);
 }
@@ -949,7 +925,7 @@ void LLWindowWin32::close()
 
     // Make sure cursor is visible and we haven't mangled the clipping state.
     showCursor();
-    setMouseClipping(FALSE);
+    setMouseClipping(false);
     if (gKeyboard)
     {
         gKeyboard->resetKeys();
@@ -989,29 +965,29 @@ void LLWindowWin32::close()
     mWindowThread->wakeAndDestroy();
 }
 
-BOOL LLWindowWin32::isValid()
+bool LLWindowWin32::isValid()
 {
     return (mWindowHandle != NULL);
 }
 
-BOOL LLWindowWin32::getVisible()
+bool LLWindowWin32::getVisible()
 {
     return (mWindowHandle && IsWindowVisible(mWindowHandle));
 }
 
-BOOL LLWindowWin32::getMinimized()
+bool LLWindowWin32::getMinimized()
 {
     return (mWindowHandle && IsIconic(mWindowHandle));
 }
 
-BOOL LLWindowWin32::getMaximized()
+bool LLWindowWin32::getMaximized()
 {
     return (mWindowHandle && IsZoomed(mWindowHandle));
 }
 
-BOOL LLWindowWin32::maximize()
+bool LLWindowWin32::maximize()
 {
-    BOOL success = FALSE;
+    bool success = false;
     if (!mWindowHandle) return success;
 
     mWindowThread->post([=]
@@ -1026,56 +1002,56 @@ BOOL LLWindowWin32::maximize()
             }
         });
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::getFullscreen()
+bool LLWindowWin32::getFullscreen()
 {
     return mFullscreen;
 }
 
-BOOL LLWindowWin32::getPosition(LLCoordScreen *position)
+bool LLWindowWin32::getPosition(LLCoordScreen *position)
 {
     position->mX = mRect.left;
     position->mY = mRect.top;
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::getSize(LLCoordScreen *size)
+bool LLWindowWin32::getSize(LLCoordScreen *size)
 {
     size->mX = mRect.right - mRect.left;
     size->mY = mRect.bottom - mRect.top;
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::getSize(LLCoordWindow *size)
+bool LLWindowWin32::getSize(LLCoordWindow *size)
 {
     size->mX = mClientRect.right - mClientRect.left;
     size->mY = mClientRect.bottom - mClientRect.top;
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::setPosition(const LLCoordScreen position)
+bool LLWindowWin32::setPosition(const LLCoordScreen position)
 {
     LLCoordScreen size;
 
     if (!mWindowHandle)
     {
-        return FALSE;
+        return false;
     }
     getSize(&size);
     moveWindow(position, size);
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::setSizeImpl(const LLCoordScreen size)
+bool LLWindowWin32::setSizeImpl(const LLCoordScreen size)
 {
     LLCoordScreen position;
 
     getPosition(&position);
     if (!mWindowHandle)
     {
-        return FALSE;
+        return false;
     }
 
     mWindowThread->post([=]()
@@ -1091,10 +1067,10 @@ BOOL LLWindowWin32::setSizeImpl(const LLCoordScreen size)
         });
 
     moveWindow(position, size);
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::setSizeImpl(const LLCoordWindow size)
+bool LLWindowWin32::setSizeImpl(const LLCoordWindow size)
 {
     RECT window_rect = {0, 0, size.mX, size.mY };
     DWORD dw_ex_style = WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;
@@ -1106,7 +1082,7 @@ BOOL LLWindowWin32::setSizeImpl(const LLCoordWindow size)
 }
 
 // changing fullscreen resolution
-BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BOOL enable_vsync, const LLCoordScreen* const posp)
+bool LLWindowWin32::switchContext(bool fullscreen, const LLCoordScreen& size, bool enable_vsync, const LLCoordScreen* const posp)
 {
     //called from main thread
     GLuint  pixel_format;
@@ -1119,11 +1095,11 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
     RECT    window_rect = { 0, 0, 0, 0 };
     S32 width = size.mX;
     S32 height = size.mY;
-    BOOL auto_show = FALSE;
+    bool auto_show = false;
 
     if (mhRC)
     {
-        auto_show = TRUE;
+        auto_show = true;
         resetDisplayResolution();
     }
 
@@ -1156,8 +1132,8 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
 
     if (fullscreen)
     {
-        mFullscreen = TRUE;
-        BOOL success = FALSE;
+        mFullscreen = true;
+        bool success = false;
         DWORD closest_refresh = 0;
 
         for (S32 mode_num = 0;; mode_num++)
@@ -1171,7 +1147,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
                 dev_mode.dmPelsHeight == height &&
                 dev_mode.dmBitsPerPel == BITS_PER_PIXEL)
             {
-                success = TRUE;
+                success = true;
                 if ((dev_mode.dmDisplayFrequency - current_refresh)
                     < (closest_refresh - current_refresh))
                 {
@@ -1183,7 +1159,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
         if (closest_refresh == 0)
         {
             LL_WARNS("Window") << "Couldn't find display mode " << width << " by " << height << " at " << BITS_PER_PIXEL << " bits per pixel" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         // If we found a good resolution, use it.
@@ -1198,7 +1174,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
 
         if (success)
         {
-            mFullscreen = TRUE;
+            mFullscreen = true;
             mFullscreenWidth = dev_mode.dmPelsWidth;
             mFullscreenHeight = dev_mode.dmPelsHeight;
             mFullscreenBits = dev_mode.dmBitsPerPel;
@@ -1224,19 +1200,19 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
         // If it failed, we don't want to run fullscreen
         else
         {
-            mFullscreen = FALSE;
+            mFullscreen = false;
             mFullscreenWidth = -1;
             mFullscreenHeight = -1;
             mFullscreenBits = -1;
             mFullscreenRefresh = -1;
 
             LL_INFOS("Window") << "Unable to run fullscreen at " << width << "x" << height << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
     else
     {
-        mFullscreen = FALSE;
+        mFullscreen = false;
         window_rect.left = (long)(posp ? posp->mX : 0);
         window_rect.right = (long)width + window_rect.left;         // Windows GDI rects don't include rightmost pixel
         window_rect.top = (long)(posp ? posp->mY : 0);
@@ -1248,7 +1224,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
 
 
     // don't post quit messages when destroying old windows
-    mPostQuit = FALSE;
+    mPostQuit = false;
 
 
     // create window
@@ -1298,7 +1274,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
         close();
         OSMessageBox(mCallbacks->translateString("MBDevContextErr"),
             mCallbacks->translateString("MBError"), OSMB_OK);
-        return FALSE;
+        return false;
     }
 
     LL_INFOS("Window") << "Device context retrieved." << LL_ENDL ;
@@ -1312,7 +1288,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
             OSMessageBox(mCallbacks->translateString("MBPixelFmtErr"),
                 mCallbacks->translateString("MBError"), OSMB_OK);
         close();
-            return FALSE;
+            return false;
         }
     }
     catch (...)
@@ -1321,7 +1297,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
         OSMessageBox(mCallbacks->translateString("MBPixelFmtErr"),
             mCallbacks->translateString("MBError"), OSMB_OK);
         close();
-        return FALSE;
+        return false;
     }
 
     LL_INFOS("Window") << "Pixel format chosen." << LL_ENDL ;
@@ -1333,7 +1309,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
         OSMessageBox(mCallbacks->translateString("MBPixelFmtDescErr"),
             mCallbacks->translateString("MBError"), OSMB_OK);
         close();
-        return FALSE;
+        return false;
     }
 
     // (EXP-1765) dump pixel data to see if there is a pattern that leads to unreproducible crash
@@ -1372,7 +1348,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
         OSMessageBox(mCallbacks->translateString("MBPixelFmtSetErr"),
             mCallbacks->translateString("MBError"), OSMB_OK);
         close();
-        return FALSE;
+        return false;
     }
 
 
@@ -1381,7 +1357,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
         OSMessageBox(mCallbacks->translateString("MBGLContextErr"),
             mCallbacks->translateString("MBError"), OSMB_OK);
         close();
-        return FALSE;
+        return false;
     }
 
     if (!wglMakeCurrent(mhDC, mhRC))
@@ -1389,7 +1365,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
         OSMessageBox(mCallbacks->translateString("MBGLContextActErr"),
             mCallbacks->translateString("MBError"), OSMB_OK);
         close();
-        return FALSE;
+        return false;
     }
 
     LL_INFOS("Window") << "Drawing context is created." << LL_ENDL ;
@@ -1481,7 +1457,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
 
             close();
             show_window_creation_error("Error after wglChoosePixelFormatARB 32-bit");
-            return FALSE;
+            return false;
         }
 
         if (!num_formats)
@@ -1496,7 +1472,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
                 {
                     close();
                     show_window_creation_error("Error after wglChoosePixelFormatARB 32-bit no AA");
-                    return FALSE;
+                    return false;
                 }
             }
 
@@ -1510,7 +1486,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
                 {
                     close();
                     show_window_creation_error("Error after wglChoosePixelFormatARB 24-bit");
-                    return FALSE;
+                    return false;
                 }
 
                 if (!num_formats)
@@ -1522,7 +1498,7 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen& size, BO
                     {
                         close();
                         show_window_creation_error("Error after wglChoosePixelFormatARB 16-bit");
-                        return FALSE;
+                        return false;
                     }
                 }
             }
@@ -1595,7 +1571,7 @@ const   S32   max_format  = (S32)num_formats - 1;
         {
             OSMessageBox(mCallbacks->translateString("MBDevContextErr"), mCallbacks->translateString("MBError"), OSMB_OK);
             close();
-            return FALSE;
+            return false;
         }
 
         if (!SetPixelFormat(mhDC, pixel_format, &pfd))
@@ -1603,7 +1579,7 @@ const   S32   max_format  = (S32)num_formats - 1;
             OSMessageBox(mCallbacks->translateString("MBPixelFmtSetErr"),
                 mCallbacks->translateString("MBError"), OSMB_OK);
             close();
-            return FALSE;
+            return false;
         }
 
         if (wglGetPixelFormatAttribivARB(mhDC, pixel_format, 0, 1, &swap_query, &swap_method))
@@ -1642,7 +1618,7 @@ const   S32   max_format  = (S32)num_formats - 1;
     {
         OSMessageBox(mCallbacks->translateString("MBPixelFmtDescErr"), mCallbacks->translateString("MBError"), OSMB_OK);
         close();
-        return FALSE;
+        return false;
     }
 
     LL_INFOS("Window") << "GL buffer: Color Bits " << S32(pfd.cColorBits)
@@ -1656,7 +1632,7 @@ const   S32   max_format  = (S32)num_formats - 1;
         mhRC = (HGLRC) createSharedContext();
         if (!mhRC)
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -1664,14 +1640,14 @@ const   S32   max_format  = (S32)num_formats - 1;
     {
         OSMessageBox(mCallbacks->translateString("MBGLContextActErr"), mCallbacks->translateString("MBError"), OSMB_OK);
         close();
-        return FALSE;
+        return false;
     }
 
     if (!gGLManager.initGL())
     {
         OSMessageBox(mCallbacks->translateString("MBVideoDrvErr"), mCallbacks->translateString("MBError"), OSMB_OK);
         close();
-        return FALSE;
+        return false;
     }
 
     // Disable vertical sync for swap
@@ -1688,7 +1664,7 @@ const   S32   max_format  = (S32)num_formats - 1;
     SetTimer( mWindowHandle, 0, 1000 / 30, NULL ); // 30 fps timer
 
     // ok to post quit messages now
-    mPostQuit = TRUE;
+    mPostQuit = true;
 
     // *HACK: Attempt to prevent startup crashes by deferring memory accounting
     // until after some graphics setup. See SL-20177. -Cosmic,2023-09-18
@@ -1707,7 +1683,7 @@ const   S32   max_format  = (S32)num_formats - 1;
 
     LL_PROFILER_GPU_CONTEXT;
 
-    return TRUE;
+    return true;
 }
 
 void LLWindowWin32::recreateWindow(RECT window_rect, DWORD dw_ex_style, DWORD dw_style)
@@ -1936,13 +1912,13 @@ void LLWindowWin32::setTitle(const std::string title)
         });
 }
 
-BOOL LLWindowWin32::setCursorPosition(const LLCoordWindow position)
+bool LLWindowWin32::setCursorPosition(const LLCoordWindow position)
 {
     ASSERT_MAIN_THREAD();
 
     if (!mWindowHandle)
     {
-        return FALSE;
+        return false;
     }
 
     LLCoordScreen screen_pos(position.convert());
@@ -1962,31 +1938,31 @@ BOOL LLWindowWin32::setCursorPosition(const LLCoordWindow position)
             SetCursorPos(screen_pos.mX, screen_pos.mY);
         });
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::getCursorPosition(LLCoordWindow *position)
+bool LLWindowWin32::getCursorPosition(LLCoordWindow *position)
 {
     ASSERT_MAIN_THREAD();
     if (!position)
     {
-        return FALSE;
+        return false;
     }
 
     *position = mCursorPosition;
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::getCursorDelta(LLCoordCommon* delta)
+bool LLWindowWin32::getCursorDelta(LLCoordCommon* delta)
 {
     if (delta == nullptr)
     {
-        return FALSE;
+        return false;
     }
 
     *delta = mMouseFrameDelta;
 
-    return TRUE;
+    return true;
 }
 
 void LLWindowWin32::hideCursor()
@@ -2001,8 +1977,8 @@ void LLWindowWin32::hideCursor()
             }
         });
 
-    mCursorHidden = TRUE;
-    mHideCursorPermanent = TRUE;
+    mCursorHidden = true;
+    mHideCursorPermanent = true;
 }
 
 void LLWindowWin32::showCursor()
@@ -2020,8 +1996,8 @@ void LLWindowWin32::showCursor()
             }
         });
 
-    mCursorHidden = FALSE;
-    mHideCursorPermanent = FALSE;
+    mCursorHidden = false;
+    mHideCursorPermanent = false;
 }
 
 void LLWindowWin32::showCursorFromMouseMove()
@@ -2037,11 +2013,11 @@ void LLWindowWin32::hideCursorUntilMouseMove()
     if (!mHideCursorPermanent && mMouseVanish)
     {
         hideCursor();
-        mHideCursorPermanent = FALSE;
+        mHideCursorPermanent = false;
     }
 }
 
-BOOL LLWindowWin32::isCursorHidden()
+bool LLWindowWin32::isCursorHidden()
 {
     return mCursorHidden;
 }
@@ -2161,7 +2137,7 @@ void LLWindowWin32::releaseMouse()
 
 void LLWindowWin32::delayInputProcessing()
 {
-    mInputProcessingPaused = TRUE;
+    mInputProcessingPaused = true;
 }
 
 
@@ -2242,7 +2218,7 @@ void LLWindowWin32::gatherInput()
         }
     }
 
-    mInputProcessingPaused = FALSE;
+    mInputProcessingPaused = false;
 
     updateCursor();
 }
@@ -2287,7 +2263,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
 
         // pass along extended flag in mask
         MASK mask = (l_param >> 16 & KF_EXTENDED) ? MASK_EXTENDED : 0x0;
-        BOOL eat_keystroke = TRUE;
+        bool eat_keystroke = true;
 
         switch (u_msg)
         {
@@ -2309,7 +2285,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
             {
                 WINDOW_IMP_POST(window_imp->mCallbacks->handleDeviceChange(window_imp));
 
-                return TRUE;
+                return 1;
             }
             break;
         }
@@ -2466,8 +2442,9 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
         {
             LL_PROFILE_ZONE_NAMED_CATEGORY_WIN32("mwp - WM_SYSKEYDOWN");
             // allow system keys, such as ALT-F4 to be processed by Windows
-            eat_keystroke = FALSE;
+            eat_keystroke = false;
             // intentional fall-through here
+            [[fallthrough]];
         }
         case WM_KEYDOWN:
         {
@@ -2487,8 +2464,9 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
             break;
         }
         case WM_SYSKEYUP:
-            eat_keystroke = FALSE;
+            eat_keystroke = false;
             // intentional fall-through here
+            [[fallthrough]];
         case WM_KEYUP:
         {
             LL_PROFILE_ZONE_NAMED_CATEGORY_WIN32("mwp - WM_KEYUP");
@@ -2579,9 +2557,9 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                     // characters.  We just need to take care of surrogate pairs sent as two WM_CHAR's
                     // by ourselves.  It is not that tough.  -- Alissa Sabre @ SL
 
-                    // Even if LLWindowCallbacks::handleUnicodeChar(llwchar, BOOL) returned FALSE,
+                    // Even if LLWindowCallbacks::handleUnicodeChar(llwchar, bool) returned false,
                     // we *did* processed the event, so I believe we should not pass it to DefWindowProc...
-                    window_imp->handleUnicodeUTF16((U16)w_param, gKeyboard->currentMask(FALSE));
+                    window_imp->handleUnicodeUTF16((U16)w_param, gKeyboard->currentMask(false));
                 });
             return 0;
         }
@@ -2612,7 +2590,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                             window_imp->interruptLanguageTextInput();
                         }
 
-                        MASK mask = gKeyboard->currentMask(TRUE);
+                        MASK mask = gKeyboard->currentMask(true);
                         auto gl_coord = window_imp->mCursorPosition.convert();
                         window_imp->mCallbacks->handleMouseMove(window_imp, gl_coord, mask);
                         window_imp->mCallbacks->handleMouseDown(window_imp, gl_coord, mask);
@@ -2635,7 +2613,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                         sHandleDoubleClick = true;
                         return;
                     }
-                    MASK mask = gKeyboard->currentMask(TRUE);
+                    MASK mask = gKeyboard->currentMask(true);
 
                     // generate move event to update mouse coordinates
                     window_imp->mCursorPosition = window_coord;
@@ -2659,7 +2637,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                         sHandleDoubleClick = true;
 
 
-                        MASK mask = gKeyboard->currentMask(TRUE);
+                        MASK mask = gKeyboard->currentMask(true);
                         // generate move event to update mouse coordinates
                         window_imp->mCursorPosition = window_coord;
                         window_imp->mCallbacks->handleMouseUp(window_imp, window_imp->mCursorPosition.convert(), mask);
@@ -2680,7 +2658,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                             WINDOW_IMP_POST(window_imp->interruptLanguageTextInput());
                         }
 
-                        MASK mask = gKeyboard->currentMask(TRUE);
+                        MASK mask = gKeyboard->currentMask(true);
                         // generate move event to update mouse coordinates
                         auto gl_coord = window_imp->mCursorPosition.convert();
                         window_imp->mCallbacks->handleMouseMove(window_imp, gl_coord, mask);
@@ -2698,7 +2676,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                 LL_RECORD_BLOCK_TIME(FTM_MOUSEHANDLER);
                 window_imp->postMouseButtonEvent([=]()
                     {
-                        MASK mask = gKeyboard->currentMask(TRUE);
+                        MASK mask = gKeyboard->currentMask(true);
                         window_imp->mCallbacks->handleRightMouseUp(window_imp, window_imp->mCursorPosition.convert(), mask);
                     });
             }
@@ -2718,7 +2696,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                             window_imp->interruptLanguageTextInput();
                         }
 
-                        MASK mask = gKeyboard->currentMask(TRUE);
+                        MASK mask = gKeyboard->currentMask(true);
                         window_imp->mCallbacks->handleMiddleMouseDown(window_imp, window_imp->mCursorPosition.convert(), mask);
                     });
             }
@@ -2732,7 +2710,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                 LL_RECORD_BLOCK_TIME(FTM_MOUSEHANDLER);
                 window_imp->postMouseButtonEvent([=]()
                     {
-                        MASK mask = gKeyboard->currentMask(TRUE);
+                        MASK mask = gKeyboard->currentMask(true);
                         window_imp->mCallbacks->handleMiddleMouseUp(window_imp, window_imp->mCursorPosition.convert(), mask);
                     });
             }
@@ -2750,7 +2728,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                         window_imp->interruptLanguageTextInput();
                     }
 
-                    MASK mask = gKeyboard->currentMask(TRUE);
+                    MASK mask = gKeyboard->currentMask(true);
                     // Windows uses numbers 1 and 2 for buttons, remap to 4, 5
                     window_imp->mCallbacks->handleOtherMouseDown(window_imp, window_imp->mCursorPosition.convert(), mask, button + 3);
                 });
@@ -2767,7 +2745,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                     LL_RECORD_BLOCK_TIME(FTM_MOUSEHANDLER);
 
                     S32 button = GET_XBUTTON_WPARAM(w_param);
-                    MASK mask = gKeyboard->currentMask(TRUE);
+                    MASK mask = gKeyboard->currentMask(true);
                     // Windows uses numbers 1 and 2 for buttons, remap to 4, 5
                     window_imp->mCallbacks->handleOtherMouseUp(window_imp, window_imp->mCursorPosition.convert(), mask, button + 3);
                 });
@@ -2877,7 +2855,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                 {
                     LL_PROFILE_ZONE_NAMED_CATEGORY_WIN32("mwp - WM_MOUSEMOVE lambda");
 
-                    MASK mask = gKeyboard->currentMask(TRUE);
+                    MASK mask = gKeyboard->currentMask(true);
                     window_imp->mMouseMask = mask;
                     window_imp->mCursorPosition = window_coord;
                 });
@@ -2914,19 +2892,19 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
             // means that the window was un-minimized.
             if (w_param == SIZE_RESTORED && window_imp->mLastSizeWParam != SIZE_RESTORED)
             {
-                WINDOW_IMP_POST(window_imp->mCallbacks->handleActivate(window_imp, TRUE));
+                WINDOW_IMP_POST(window_imp->mCallbacks->handleActivate(window_imp, true));
             }
 
             // handle case of window being maximized from fully minimized state
             if (w_param == SIZE_MAXIMIZED && window_imp->mLastSizeWParam != SIZE_MAXIMIZED)
             {
-                WINDOW_IMP_POST(window_imp->mCallbacks->handleActivate(window_imp, TRUE));
+                WINDOW_IMP_POST(window_imp->mCallbacks->handleActivate(window_imp, true));
             }
 
             // Also handle the minimization case
             if (w_param == SIZE_MINIMIZED && window_imp->mLastSizeWParam != SIZE_MINIMIZED)
             {
-                WINDOW_IMP_POST(window_imp->mCallbacks->handleActivate(window_imp, FALSE));
+                WINDOW_IMP_POST(window_imp->mCallbacks->handleActivate(window_imp, false));
             }
 
             // Actually resize all of our views
@@ -2995,8 +2973,6 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                     });
             };
             return 0;
-
-            break;
         }
         case WM_SETTINGCHANGE:
         {
@@ -3005,7 +2981,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
             {
                 if (!SystemParametersInfo(SPI_GETMOUSEVANISH, 0, &window_imp->mMouseVanish, 0))
                 {
-                    WINDOW_IMP_POST(window_imp->mMouseVanish = TRUE);
+                    WINDOW_IMP_POST(window_imp->mMouseVanish = true);
                 }
             }
         }
@@ -3081,6 +3057,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
                 }
             }
         }
+        break;
 
         //list of messages we get often that we don't care to log about
         case WM_NCHITTEST:
@@ -3114,7 +3091,7 @@ LRESULT CALLBACK LLWindowWin32::mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_
     return ret;
 }
 
-BOOL LLWindowWin32::convertCoords(LLCoordGL from, LLCoordWindow *to)
+bool LLWindowWin32::convertCoords(LLCoordGL from, LLCoordWindow *to)
 {
     S32     client_height;
     RECT    client_rect;
@@ -3124,17 +3101,17 @@ BOOL LLWindowWin32::convertCoords(LLCoordGL from, LLCoordWindow *to)
         !GetClientRect(mWindowHandle, &client_rect) ||
         NULL == to)
     {
-        return FALSE;
+        return false;
     }
 
     to->mX = from.mX;
     client_height = client_rect.bottom - client_rect.top;
     to->mY = client_height - from.mY - 1;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::convertCoords(LLCoordWindow from, LLCoordGL* to)
+bool LLWindowWin32::convertCoords(LLCoordWindow from, LLCoordGL* to)
 {
     S32     client_height;
     RECT    client_rect;
@@ -3143,23 +3120,23 @@ BOOL LLWindowWin32::convertCoords(LLCoordWindow from, LLCoordGL* to)
         !GetClientRect(mWindowHandle, &client_rect) ||
         NULL == to)
     {
-        return FALSE;
+        return false;
     }
 
     to->mX = from.mX;
     client_height = client_rect.bottom - client_rect.top;
     to->mY = client_height - from.mY - 1;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::convertCoords(LLCoordScreen from, LLCoordWindow* to)
+bool LLWindowWin32::convertCoords(LLCoordScreen from, LLCoordWindow* to)
 {
     POINT mouse_point;
 
     mouse_point.x = from.mX;
     mouse_point.y = from.mY;
-    BOOL result = ScreenToClient(mWindowHandle, &mouse_point);
+    bool result = ScreenToClient(mWindowHandle, &mouse_point);
 
     if (result)
     {
@@ -3170,13 +3147,13 @@ BOOL LLWindowWin32::convertCoords(LLCoordScreen from, LLCoordWindow* to)
     return result;
 }
 
-BOOL LLWindowWin32::convertCoords(LLCoordWindow from, LLCoordScreen *to)
+bool LLWindowWin32::convertCoords(LLCoordWindow from, LLCoordScreen *to)
 {
     POINT mouse_point;
 
     mouse_point.x = from.mX;
     mouse_point.y = from.mY;
-    BOOL result = ClientToScreen(mWindowHandle, &mouse_point);
+    bool result = ClientToScreen(mWindowHandle, &mouse_point);
 
     if (result)
     {
@@ -3187,44 +3164,44 @@ BOOL LLWindowWin32::convertCoords(LLCoordWindow from, LLCoordScreen *to)
     return result;
 }
 
-BOOL LLWindowWin32::convertCoords(LLCoordScreen from, LLCoordGL *to)
+bool LLWindowWin32::convertCoords(LLCoordScreen from, LLCoordGL *to)
 {
     LLCoordWindow window_coord;
 
     if (!mWindowHandle || (NULL == to))
     {
-        return FALSE;
+        return false;
     }
 
     convertCoords(from, &window_coord);
     convertCoords(window_coord, to);
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::convertCoords(LLCoordGL from, LLCoordScreen *to)
+bool LLWindowWin32::convertCoords(LLCoordGL from, LLCoordScreen *to)
 {
     LLCoordWindow window_coord;
 
     if (!mWindowHandle || (NULL == to))
     {
-        return FALSE;
+        return false;
     }
 
     convertCoords(from, &window_coord);
     convertCoords(window_coord, to);
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLWindowWin32::isClipboardTextAvailable()
+bool LLWindowWin32::isClipboardTextAvailable()
 {
     return IsClipboardFormatAvailable(CF_UNICODETEXT);
 }
 
 
-BOOL LLWindowWin32::pasteTextFromClipboard(LLWString &dst)
+bool LLWindowWin32::pasteTextFromClipboard(LLWString &dst)
 {
-    BOOL success = FALSE;
+    bool success = false;
 
     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
     {
@@ -3239,7 +3216,7 @@ BOOL LLWindowWin32::pasteTextFromClipboard(LLWString &dst)
                     dst = utf16str_to_wstring(utf16str);
                     LLWStringUtil::removeWindowsCR(dst);
                     GlobalUnlock(h_data);
-                    success = TRUE;
+                    success = true;
                 }
             }
             CloseClipboard();
@@ -3250,9 +3227,9 @@ BOOL LLWindowWin32::pasteTextFromClipboard(LLWString &dst)
 }
 
 
-BOOL LLWindowWin32::copyTextToClipboard(const LLWString& wstr)
+bool LLWindowWin32::copyTextToClipboard(const LLWString& wstr)
 {
-    BOOL success = FALSE;
+    bool success = false;
 
     if (OpenClipboard(mWindowHandle))
     {
@@ -3276,7 +3253,7 @@ BOOL LLWindowWin32::copyTextToClipboard(const LLWString& wstr)
 
                 if (SetClipboardData(CF_UNICODETEXT, hglobal_copy_utf16))
                 {
-                    success = TRUE;
+                    success = true;
                 }
             }
         }
@@ -3288,13 +3265,13 @@ BOOL LLWindowWin32::copyTextToClipboard(const LLWString& wstr)
 }
 
 // Constrains the mouse to the window.
-void LLWindowWin32::setMouseClipping( BOOL b )
+void LLWindowWin32::setMouseClipping( bool b )
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_WIN32;
     ASSERT_MAIN_THREAD();
     if( b != mIsMouseClipping )
     {
-        BOOL success = FALSE;
+        bool success = false;
 
         if( b )
         {
@@ -3320,9 +3297,9 @@ void LLWindowWin32::setMouseClipping( BOOL b )
     }
 }
 
-BOOL LLWindowWin32::getClientRectInScreenSpace( RECT* rectp )
+bool LLWindowWin32::getClientRectInScreenSpace( RECT* rectp )
 {
-    BOOL success = FALSE;
+    bool success = false;
 
     RECT client_rect;
     if (mWindowHandle && GetClientRect(mWindowHandle, &client_rect))
@@ -3343,7 +3320,7 @@ BOOL LLWindowWin32::getClientRectInScreenSpace( RECT* rectp )
             bottom_right.x,
             bottom_right.y);
 
-        success = TRUE;
+        success = true;
     }
 
     return success;
@@ -3369,36 +3346,36 @@ F32 LLWindowWin32::getGamma()
     return mCurrentGamma;
 }
 
-BOOL LLWindowWin32::restoreGamma()
+bool LLWindowWin32::restoreGamma()
 {
     ASSERT_MAIN_THREAD();
-    if (mCustomGammaSet != FALSE)
+    if (mCustomGammaSet)
     {
         LL_DEBUGS("Window") << "Restoring gamma" << LL_ENDL;
-        mCustomGammaSet = FALSE;
+        mCustomGammaSet = false;
         return SetDeviceGammaRamp(mhDC, mPrevGammaRamp);
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLWindowWin32::setGamma(const F32 gamma)
+bool LLWindowWin32::setGamma(const F32 gamma)
 {
     ASSERT_MAIN_THREAD();
     mCurrentGamma = gamma;
 
     //Get the previous gamma ramp to restore later.
-    if (mCustomGammaSet == FALSE)
+    if (!mCustomGammaSet)
     {
         if (!gGLManager.mIsIntel) // skip for Intel GPUs (see SL-11341)
         {
             LL_DEBUGS("Window") << "Getting the previous gamma ramp to restore later" << LL_ENDL;
-            if(GetDeviceGammaRamp(mhDC, mPrevGammaRamp) == FALSE)
+            if (!GetDeviceGammaRamp(mhDC, mPrevGammaRamp))
             {
                 LL_WARNS("Window") << "Failed to get the previous gamma ramp" << LL_ENDL;
-                return FALSE;
+                return false;
             }
         }
-        mCustomGammaSet = TRUE;
+        mCustomGammaSet = true;
     }
 
     LL_DEBUGS("Window") << "Setting gamma to " << gamma << LL_ENDL;
@@ -3453,13 +3430,13 @@ LLWindow::LLWindowResolution* LLWindowWin32::getSupportedResolutions(S32 &num_re
                 dev_mode.dmPelsWidth >= 800 &&
                 dev_mode.dmPelsHeight >= 600)
             {
-                BOOL resolution_exists = FALSE;
+                bool resolution_exists = false;
                 for(S32 i = 0; i < mNumSupportedResolutions; i++)
                 {
                     if (mSupportedResolutions[i].mWidth == dev_mode.dmPelsWidth &&
                         mSupportedResolutions[i].mHeight == dev_mode.dmPelsHeight)
                     {
-                        resolution_exists = TRUE;
+                        resolution_exists = true;
                     }
                 }
                 if (!resolution_exists)
@@ -3512,12 +3489,12 @@ F32 LLWindowWin32::getPixelAspectRatio()
 
 // Change display resolution.  Returns true if successful.
 // protected
-BOOL LLWindowWin32::setDisplayResolution(S32 width, S32 height, S32 bits, S32 refresh)
+bool LLWindowWin32::setDisplayResolution(S32 width, S32 height, S32 bits, S32 refresh)
 {
     DEVMODE dev_mode;
     ::ZeroMemory(&dev_mode, sizeof(DEVMODE));
     dev_mode.dmSize = sizeof(DEVMODE);
-    BOOL success = FALSE;
+    bool success = false;
 
     // Don't change anything if we don't have to
     if (EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &dev_mode))
@@ -3528,7 +3505,7 @@ BOOL LLWindowWin32::setDisplayResolution(S32 width, S32 height, S32 bits, S32 re
             dev_mode.dmDisplayFrequency == refresh )
         {
             // ...display mode identical, do nothing
-            return TRUE;
+            return true;
         }
     }
 
@@ -3555,7 +3532,7 @@ BOOL LLWindowWin32::setDisplayResolution(S32 width, S32 height, S32 bits, S32 re
 }
 
 // protected
-BOOL LLWindowWin32::setFullscreenResolution()
+bool LLWindowWin32::setFullscreenResolution()
 {
     if (mFullscreen)
     {
@@ -3563,18 +3540,18 @@ BOOL LLWindowWin32::setFullscreenResolution()
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
 // protected
-BOOL LLWindowWin32::resetDisplayResolution()
+bool LLWindowWin32::resetDisplayResolution()
 {
     LL_DEBUGS("Window") << "resetDisplayResolution START" << LL_ENDL;
 
     LONG cds_result = ChangeDisplaySettings(NULL, 0);
 
-    BOOL success = (DISP_CHANGE_SUCCESSFUL == cds_result);
+    bool success = (DISP_CHANGE_SUCCESSFUL == cds_result);
 
     if (!success)
     {
@@ -3632,13 +3609,13 @@ void LLSplashScreenWin32::updateImpl(const std::string& mesg)
 {
     if (!mWindow) return;
 
-    int output_str_len = MultiByteToWideChar(CP_UTF8, 0, mesg.c_str(), mesg.length(), NULL, 0);
+    int output_str_len = MultiByteToWideChar(CP_UTF8, 0, mesg.c_str(), static_cast<int>(mesg.length()), NULL, 0);
     if( output_str_len>1024 )
         return;
 
     WCHAR w_mesg[1025];//big enought to keep null terminatos
 
-    MultiByteToWideChar (CP_UTF8, 0, mesg.c_str(), mesg.length(), w_mesg, output_str_len);
+    MultiByteToWideChar (CP_UTF8, 0, mesg.c_str(), static_cast<int>(mesg.length()), w_mesg, output_str_len);
 
     //looks like MultiByteToWideChar didn't add null terminator to converted string, see EXT-4858
     w_mesg[output_str_len] = 0;
@@ -3784,9 +3761,9 @@ LLSD LLWindowWin32::getNativeKeyData()
     return result;
 }
 
-BOOL LLWindowWin32::dialogColorPicker( F32 *r, F32 *g, F32 *b )
+bool LLWindowWin32::dialogColorPicker( F32 *r, F32 *g, F32 *b )
 {
-    BOOL retval = FALSE;
+    bool retval = false;
 
     static CHOOSECOLOR cc;
     static COLORREF crCustColors[16];
@@ -3839,7 +3816,7 @@ void LLWindowWin32::focusClient()
         });
 }
 
-void LLWindowWin32::allowLanguageTextInput(LLPreeditor *preeditor, BOOL b)
+void LLWindowWin32::allowLanguageTextInput(LLPreeditor *preeditor, bool b)
 {
     if (b == sLanguageTextInputAllowed || !LLWinImm::isAvailable())
     {
@@ -3849,7 +3826,7 @@ void LLWindowWin32::allowLanguageTextInput(LLPreeditor *preeditor, BOOL b)
     if (preeditor != mPreeditor && !b)
     {
         // This condition may occur with a call to
-        // setEnabled(BOOL) from LLTextEditor or LLLineEditor
+        // setEnabled(bool) from LLTextEditor or LLLineEditor
         // when the control is not focused.
         // We need to silently ignore the case so that
         // the language input status of the focused control
@@ -3879,7 +3856,7 @@ void LLWindowWin32::allowLanguageTextInput(LLPreeditor *preeditor, BOOL b)
             if (sWinIMEOpened && GetKeyboardLayout(0) == sWinInputLocale)
             {
                 HIMC himc = LLWinImm::getContext(mWindowHandle);
-                LLWinImm::setOpenStatus(himc, TRUE);
+                LLWinImm::setOpenStatus(himc, true);
                 LLWinImm::setConversionStatus(himc, sWinIMEConversionMode, sWinIMESentenceMode);
                 LLWinImm::releaseContext(mWindowHandle, himc);
             }
@@ -3905,7 +3882,7 @@ void LLWindowWin32::allowLanguageTextInput(LLPreeditor *preeditor, BOOL b)
                     // We need both ImmSetConversionStatus and ImmSetOpenStatus here to surely disable IME's
                     // keyboard hooking, because Some IME reacts only on the former and some other on the latter...
                     LLWinImm::setConversionStatus(himc, IME_CMODE_NOCONVERSION, sWinIMESentenceMode);
-                    LLWinImm::setOpenStatus(himc, FALSE);
+                    LLWinImm::setOpenStatus(himc, false);
                 }
                 LLWinImm::releaseContext(mWindowHandle, himc);
             }
@@ -4032,14 +4009,14 @@ U32 LLWindowWin32::fillReconvertString(const LLWString &text,
     S32 focus, S32 focus_length, RECONVERTSTRING *reconvert_string)
 {
     const llutf16string text_utf16 = wstring_to_utf16str(text);
-    const DWORD required_size = sizeof(RECONVERTSTRING) + (text_utf16.length() + 1) * sizeof(WCHAR);
+    const DWORD required_size = sizeof(RECONVERTSTRING) + (static_cast<DWORD>(text_utf16.length()) + 1) * sizeof(WCHAR);
     if (reconvert_string && reconvert_string->dwSize >= required_size)
     {
         const DWORD focus_utf16_at = wstring_utf16_length(text, 0, focus);
         const DWORD focus_utf16_length = wstring_utf16_length(text, focus, focus_length);
 
         reconvert_string->dwVersion = 0;
-        reconvert_string->dwStrLen = text_utf16.length();
+        reconvert_string->dwStrLen = static_cast<DWORD>(text_utf16.length());
         reconvert_string->dwStrOffset = sizeof(RECONVERTSTRING);
         reconvert_string->dwCompStrLen = focus_utf16_length;
         reconvert_string->dwCompStrOffset = focus_utf16_at * sizeof(WCHAR);
@@ -4111,7 +4088,7 @@ void LLWindowWin32::handleCompositionMessage(const U32 indexes)
     {
         return;
     }
-    BOOL needs_update = FALSE;
+    bool needs_update = false;
     LLWString result_string;
     LLWString preedit_string;
     S32 preedit_string_utf16_length = 0;
@@ -4134,7 +4111,7 @@ void LLWindowWin32::handleCompositionMessage(const U32 indexes)
                 result_string = utf16str_to_wstring(llutf16string(data, size / sizeof(WCHAR)));
             }
             delete[] data;
-            needs_update = TRUE;
+            needs_update = true;
         }
     }
 
@@ -4151,7 +4128,7 @@ void LLWindowWin32::handleCompositionMessage(const U32 indexes)
                 preedit_string = utf16str_to_wstring(llutf16string(data, size / sizeof(WCHAR)));
             }
             delete[] data;
-            needs_update = TRUE;
+            needs_update = true;
         }
     }
 
@@ -4187,13 +4164,13 @@ void LLWindowWin32::handleCompositionMessage(const U32 indexes)
             size = LLWinImm::getCompositionString(himc, GCS_COMPATTR, data, size);
             if (size == preedit_string_utf16_length)
             {
-                preedit_standouts.assign(preedit_segment_lengths.size(), FALSE);
+                preedit_standouts.assign(preedit_segment_lengths.size(), false);
                 S32 offset = 0;
                 for (U32 i = 0; i < preedit_segment_lengths.size(); i++)
                 {
                     if (ATTR_TARGET_CONVERTED == data[offset] || ATTR_TARGET_NOTCONVERTED == data[offset])
                     {
-                        preedit_standouts[i] = TRUE;
+                        preedit_standouts[i] = true;
                     }
                     offset += wstring_utf16_length(preedit_string, offset, preedit_segment_lengths[i]);
                 }
@@ -4202,7 +4179,7 @@ void LLWindowWin32::handleCompositionMessage(const U32 indexes)
         }
     }
 
-    S32 caret_position = preedit_string.length();
+    S32 caret_position = static_cast<S32>(preedit_string.length());
     if (indexes & GCS_CURSORPOS)
     {
         const S32 caret_position_utf16 = LLWinImm::getCompositionString(himc, GCS_CURSORPOS, NULL, 0);
@@ -4217,7 +4194,7 @@ void LLWindowWin32::handleCompositionMessage(const U32 indexes)
         // I'm not sure this condition really happens, but
         // Windows SDK document says it is an indication
         // of "reset everything."
-        needs_update = TRUE;
+        needs_update = true;
     }
 
     LLWinImm::releaseContext(mWindowHandle, himc);
@@ -4248,11 +4225,11 @@ void LLWindowWin32::handleCompositionMessage(const U32 indexes)
         {
             if (preedit_segment_lengths.size() == 0)
             {
-                preedit_segment_lengths.assign(1, preedit_string.length());
+                preedit_segment_lengths.assign(1, static_cast<S32>(preedit_string.length()));
             }
             if (preedit_standouts.size() == 0)
             {
-                preedit_standouts.assign(preedit_segment_lengths.size(), FALSE);
+                preedit_standouts.assign(preedit_segment_lengths.size(), false);
             }
         }
         mPreeditor->updatePreedit(preedit_string, preedit_segment_lengths, preedit_standouts, caret_position);
@@ -4299,11 +4276,11 @@ LLWindowCallbacks::DragNDropResult LLWindowWin32::completeDragNDropRequest( cons
 }
 
 // Handle WM_IME_REQUEST message.
-// If it handled the message, returns TRUE.  Otherwise, FALSE.
+// If it handled the message, returns true.  Otherwise, false.
 // When it handled the message, the value to be returned from
 // the Window Procedure is set to *result.
 
-BOOL LLWindowWin32::handleImeRequests(WPARAM request, LPARAM param, LRESULT *result)
+bool LLWindowWin32::handleImeRequests(WPARAM request, LPARAM param, LRESULT *result)
 {
     if ( mPreeditor )
     {
@@ -4321,7 +4298,7 @@ BOOL LLWindowWin32::handleImeRequests(WPARAM request, LPARAM param, LRESULT *res
                 form->dwIndex = dwIndex;
 
                 *result = 1;
-                return TRUE;
+                return true;
             }
             case IMR_QUERYCHARPOSITION:
             {
@@ -4341,20 +4318,20 @@ BOOL LLWindowWin32::handleImeRequests(WPARAM request, LPARAM param, LRESULT *res
                 if (!mPreeditor->getPreeditLocation(position, &caret_coord, &preedit_bounds, &text_control))
                 {
                     LL_WARNS("Window") << "*** IMR_QUERYCHARPOSITON called but getPreeditLocation failed." << LL_ENDL;
-                    return FALSE;
+                    return false;
                 }
 
                 fillCharPosition(caret_coord, preedit_bounds, text_control, char_position);
 
                 *result = 1;
-                return TRUE;
+                return true;
             }
             case IMR_COMPOSITIONFONT:
             {
                 fillCompositionLogfont((LOGFONT *)param);
 
                 *result = 1;
-                return TRUE;
+                return true;
             }
             case IMR_RECONVERTSTRING:
             {
@@ -4375,7 +4352,7 @@ BOOL LLWindowWin32::handleImeRequests(WPARAM request, LPARAM param, LRESULT *res
                         // Let the IME to decide the reconversion range, and
                         // adjust the reconvert_string structure accordingly.
                         HIMC himc = LLWinImm::getContext(mWindowHandle);
-                        const BOOL adjusted = LLWinImm::setCompositionString(himc,
+                        const bool adjusted = LLWinImm::setCompositionString(himc,
                                     SCS_QUERYRECONVERTSTRING, reconvert_string, size, NULL, 0);
                         LLWinImm::releaseContext(mWindowHandle, himc);
                         if (adjusted)
@@ -4392,12 +4369,12 @@ BOOL LLWindowWin32::handleImeRequests(WPARAM request, LPARAM param, LRESULT *res
                 }
 
                 *result = size;
-                return TRUE;
+                return true;
             }
             case IMR_CONFIRMRECONVERTSTRING:
             {
-                *result = FALSE;
-                return TRUE;
+                *result = 0;
+                return true;
             }
             case IMR_DOCUMENTFEED:
             {
@@ -4419,14 +4396,14 @@ BOOL LLWindowWin32::handleImeRequests(WPARAM request, LPARAM param, LRESULT *res
 
                 RECONVERTSTRING *reconvert_string = (RECONVERTSTRING *)param;
                 *result = fillReconvertString(context, preedit, 0, reconvert_string);
-                return TRUE;
+                return true;
             }
             default:
-                return FALSE;
+                return false;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 //static
@@ -4552,12 +4529,6 @@ std::vector<std::string> LLWindowWin32::getDynamicFallbackFontList()
     // Fonts previously in getFontListSans() have moved to fonts.xml.
     return std::vector<std::string>();
 }
-
-U32 LLWindowWin32::getAvailableVRAMMegabytes()
-{
-    return mWindowThread ? mWindowThread->getAvailableVRAMMegabytes() : 0;
-}
-
 #endif // LL_WINDOWS
 
 inline LLWindowWin32::LLWindowWin32Thread::LLWindowWin32Thread()
@@ -4626,39 +4597,55 @@ private:
     std::string mPrev;
 };
 
-// Print hardware debug info about available graphics adapters in ordinal order
-void debugEnumerateGraphicsAdapters()
+void LLWindowWin32::LLWindowWin32Thread::checkDXMem()
 {
-    LL_INFOS("Window") << "Enumerating graphics adapters..." << LL_ENDL;
+    if (!mGLReady || mGotGLBuffer) { return; }
+
+    IDXGIFactory4* p_factory = nullptr;
+
+    HRESULT res = CreateDXGIFactory1(__uuidof(IDXGIFactory4), (void**)&p_factory);
 
-    IDXGIFactory1* factory;
-    HRESULT res = CreateDXGIFactory1(__uuidof(IDXGIFactory1), (void**)&factory);
-    if (FAILED(res) || !factory)
+    if (FAILED(res))
     {
         LL_WARNS() << "CreateDXGIFactory1 failed: 0x" << std::hex << res << LL_ENDL;
     }
     else
     {
+        IDXGIAdapter3* p_dxgi_adapter = nullptr;
         UINT graphics_adapter_index = 0;
-        IDXGIAdapter3* dxgi_adapter;
         while (true)
         {
-            res = factory->EnumAdapters(graphics_adapter_index, reinterpret_cast<IDXGIAdapter**>(&dxgi_adapter));
+            res = p_factory->EnumAdapters(graphics_adapter_index, reinterpret_cast<IDXGIAdapter**>(&p_dxgi_adapter));
             if (FAILED(res))
             {
                 if (graphics_adapter_index == 0)
                 {
                     LL_WARNS() << "EnumAdapters failed: 0x" << std::hex << res << LL_ENDL;
                 }
-                else
-                {
-                    LL_INFOS("Window") << "Done enumerating graphics adapters" << LL_ENDL;
-                }
             }
             else
             {
+                if (graphics_adapter_index == 0) // Should it check largest one isntead of first?
+                {
+                    DXGI_QUERY_VIDEO_MEMORY_INFO info;
+                    p_dxgi_adapter->QueryVideoMemoryInfo(0, DXGI_MEMORY_SEGMENT_GROUP_LOCAL, &info);
+
+                    // Alternatively use GetDesc from below to get adapter's memory
+                    UINT64 budget_mb = info.Budget / (1024 * 1024);
+                    if (gGLManager.mVRAM < (S32)budget_mb)
+                    {
+                        gGLManager.mVRAM = (S32)budget_mb;
+                        LL_INFOS("RenderInit") << "New VRAM Budget (DX9): " << gGLManager.mVRAM << " MB" << LL_ENDL;
+                    }
+                    else
+                    {
+                        LL_INFOS("RenderInit") << "VRAM Budget (DX9): " << budget_mb
+                            << " MB, current (WMI): " << gGLManager.mVRAM << " MB" << LL_ENDL;
+                    }
+                }
+
                 DXGI_ADAPTER_DESC desc;
-                dxgi_adapter->GetDesc(&desc);
+                p_dxgi_adapter->GetDesc(&desc);
                 std::wstring description_w((wchar_t*)desc.Description);
                 std::string description(description_w.begin(), description_w.end());
                 LL_INFOS("Window") << "Graphics adapter index: " << graphics_adapter_index << ", "
@@ -4671,10 +4658,10 @@ void debugEnumerateGraphicsAdapters()
                     << "SharedSystemMemory: " << desc.SharedSystemMemory / 1024 / 1024 << LL_ENDL;
             }
 
-            if (dxgi_adapter)
+            if (p_dxgi_adapter)
             {
-                dxgi_adapter->Release();
-                dxgi_adapter = NULL;
+                p_dxgi_adapter->Release();
+                p_dxgi_adapter = NULL;
             }
             else
             {
@@ -4685,168 +4672,12 @@ void debugEnumerateGraphicsAdapters()
         }
     }
 
-    if (factory)
-    {
-        factory->Release();
-    }
-}
-
-void LLWindowWin32::LLWindowWin32Thread::initDX()
-{
-    if (!mGLReady) { return; }
-
-    if (mDXGIAdapter == NULL)
-    {
-        debugEnumerateGraphicsAdapters();
-
-        IDXGIFactory4* pFactory = nullptr;
-
-        HRESULT res = CreateDXGIFactory1(__uuidof(IDXGIFactory4), (void**)&pFactory);
-
-        if (FAILED(res))
-        {
-            LL_WARNS() << "CreateDXGIFactory1 failed: 0x" << std::hex << res << LL_ENDL;
-        }
-        else
-        {
-            res = pFactory->EnumAdapters(0, reinterpret_cast<IDXGIAdapter**>(&mDXGIAdapter));
-            if (FAILED(res))
-            {
-                LL_WARNS() << "EnumAdapters failed: 0x" << std::hex << res << LL_ENDL;
-            }
-            else
-            {
-                LL_INFOS() << "EnumAdapters success" << LL_ENDL;
-            }
-        }
-
-        if (pFactory)
-        {
-            pFactory->Release();
-        }
-    }
-}
-
-void LLWindowWin32::LLWindowWin32Thread::initD3D()
-{
-    if (!mGLReady) { return; }
-
-    if (mDXGIAdapter == NULL && mD3DDevice == NULL && mWindowHandleThrd != 0)
-    {
-        mD3D = Direct3DCreate9(D3D_SDK_VERSION);
-
-        D3DPRESENT_PARAMETERS d3dpp;
-
-        ZeroMemory(&d3dpp, sizeof(d3dpp));
-        d3dpp.Windowed = TRUE;
-        d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
-
-        HRESULT res = mD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, mWindowHandleThrd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &mD3DDevice);
-
-        if (FAILED(res))
-        {
-            LL_WARNS() << "(fallback) CreateDevice failed: 0x" << std::hex << res << LL_ENDL;
-        }
-        else
-        {
-            LL_INFOS() << "(fallback) CreateDevice success" << LL_ENDL;
-        }
-    }
-}
-
-void LLWindowWin32::LLWindowWin32Thread::cleanupDX()
-{
-    //clean up DXGI/D3D resources
-    if (mDXGIAdapter)
-    {
-        mDXGIAdapter->Release();
-        mDXGIAdapter = nullptr;
-    }
-
-    if (mD3DDevice)
-    {
-        mD3DDevice->Release();
-        mD3DDevice = nullptr;
-    }
-
-    if (mD3D)
+    if (p_factory)
     {
-        mD3D->Release();
-        mD3D = nullptr;
+        p_factory->Release();
     }
-}
-
-void LLWindowWin32::LLWindowWin32Thread::updateVRAMUsage()
-{
-    LL_PROFILE_ZONE_SCOPED;
-    if (!mGLReady) { return; }
-
-    if (mDXGIAdapter != nullptr)
-    {
-        // NOTE: what lies below is hand wavy math based on compatibility testing and observation against a variety of hardware
-        //  It doesn't make sense, but please don't refactor it to make sense. -- davep
 
-        DXGI_QUERY_VIDEO_MEMORY_INFO info;
-        mDXGIAdapter->QueryVideoMemoryInfo(0, DXGI_MEMORY_SEGMENT_GROUP_LOCAL, &info);
-#if 0 // debug 0 budget and 0 CU
-        info.Budget = 0;
-        info.CurrentUsage = 0;
-#endif
-
-        U32 budget_mb = info.Budget / 1024 / 1024;
-        gGLManager.mVRAM = llmax(gGLManager.mVRAM, (S32) budget_mb);
-
-        U32 afr_mb = info.AvailableForReservation / 1024 / 1024;
-        // correct for systems that misreport budget
-        if (budget_mb == 0)
-        {
-            // fall back to available for reservation clamped between 512MB and 2GB
-            budget_mb = llclamp(afr_mb, (U32) 512, (U32) 2048);
-        }
-
-        if ( mMaxVRAM != 0)
-        {
-            budget_mb = llmin(budget_mb, mMaxVRAM);
-        }
-
-        U32 cu_mb = info.CurrentUsage / 1024 / 1024;
-
-        // get an estimated usage based on texture bytes allocated
-        U32 eu_mb = LLImageGL::getTextureBytesAllocated() * 2 / 1024 / 1024;
-
-        if (cu_mb == 0)
-        { // current usage is sometimes unreliable on Intel GPUs, fall back to estimated usage
-            cu_mb = llmax((U32)1, eu_mb);
-        }
-        U32 target_mb = budget_mb;
-
-        if (target_mb > 4096)  // if 4GB are installed, try to leave 2GB free
-        {
-            target_mb -= 2048;
-        }
-        else // if less than 4GB are installed, try not to use more than half of it
-        {
-            target_mb /= 2;
-        }
-
-        mAvailableVRAM = cu_mb < target_mb ? target_mb - cu_mb : 0;
-
-#if 0
-
-        F32 eu_error = (F32)((S32)eu_mb - (S32)cu_mb) / (F32)cu_mb;
-        LL_INFOS("Window") << "\nLocal\nAFR: " << info.AvailableForReservation / 1024 / 1024
-            << "\nBudget: " << info.Budget / 1024 / 1024
-            << "\nCR: " << info.CurrentReservation / 1024 / 1024
-            << "\nCU: " << info.CurrentUsage / 1024 / 1024
-            << "\nEU: " << eu_mb << llformat(" (%.2f)", eu_error)
-            << "\nTU: " << target_mb
-            << "\nAM: " << mAvailableVRAM << LL_ENDL;
-#endif
-    }
-    else if (mD3DDevice != NULL)
-    { // fallback to D3D9
-        mAvailableVRAM = mD3DDevice->GetAvailableTextureMem() / 1024 / 1024;
-    }
+    mGotGLBuffer = true;
 }
 
 void LLWindowWin32::LLWindowWin32Thread::run()
@@ -4866,15 +4697,11 @@ void LLWindowWin32::LLWindowWin32Thread::run()
     {
         LL_PROFILE_ZONE_SCOPED_CATEGORY_WIN32;
 
-        // lazily call initD3D inside this loop to catch when mGLReady has been set to true
-        initDX();
+        // Check memory budget using DirectX
+        checkDXMem();
 
         if (mWindowHandleThrd != 0)
         {
-            // lazily call initD3D inside this loop to catch when mWindowHandle has been set, and mGLReady has been set to true
-            // *TODO: Shutdown if this fails when mWindowHandle exists
-            initD3D();
-
             MSG msg;
             BOOL status;
             if (mhDCThrd == 0)
@@ -4907,13 +4734,6 @@ void LLWindowWin32::LLWindowWin32Thread::run()
             getQueue().runPending();
         }
 
-        // update available vram once every 3 seconds
-        static LLFrameTimer vramTimer;
-        if (vramTimer.getElapsedTimeF32() > 3.f)
-        {
-            updateVRAMUsage();
-            vramTimer.reset();
-        }
 #if 0
         {
             LL_PROFILE_ZONE_NAMED_CATEGORY_WIN32("w32t - Sleep");
@@ -4922,8 +4742,6 @@ void LLWindowWin32::LLWindowWin32Thread::run()
         }
 #endif
     }
-
-    cleanupDX();
 }
 
 void LLWindowWin32::LLWindowWin32Thread::wakeAndDestroy()
@@ -5023,7 +4841,6 @@ void LLWindowWin32::LLWindowWin32Thread::wakeAndDestroy()
             // very unsafe
             TerminateThread(pair.second.native_handle(), 0);
             pair.second.detach();
-            cleanupDX();
         }
     }
     LL_DEBUGS("Window") << "thread pool shutdown complete" << LL_ENDL;
diff --git a/indra/llwindow/llwindowwin32.h b/indra/llwindow/llwindowwin32.h
index 33fa67ba50..287402faa0 100644
--- a/indra/llwindow/llwindowwin32.h
+++ b/indra/llwindow/llwindowwin32.h
@@ -48,47 +48,47 @@ public:
     /*virtual*/ void show();
     /*virtual*/ void hide();
     /*virtual*/ void close();
-    /*virtual*/ BOOL getVisible();
-    /*virtual*/ BOOL getMinimized();
-    /*virtual*/ BOOL getMaximized();
-    /*virtual*/ BOOL maximize();
+    /*virtual*/ bool getVisible();
+    /*virtual*/ bool getMinimized();
+    /*virtual*/ bool getMaximized();
+    /*virtual*/ bool maximize();
     /*virtual*/ void minimize();
     /*virtual*/ void restore();
-    /*virtual*/ BOOL getFullscreen();
-    /*virtual*/ BOOL getPosition(LLCoordScreen *position);
-    /*virtual*/ BOOL getSize(LLCoordScreen *size);
-    /*virtual*/ BOOL getSize(LLCoordWindow *size);
-    /*virtual*/ BOOL setPosition(LLCoordScreen position);
-    /*virtual*/ BOOL setSizeImpl(LLCoordScreen size);
-    /*virtual*/ BOOL setSizeImpl(LLCoordWindow size);
-    /*virtual*/ BOOL switchContext(BOOL fullscreen, const LLCoordScreen &size, BOOL enable_vsync, const LLCoordScreen * const posp = NULL);
+    /*virtual*/ bool getFullscreen();
+    /*virtual*/ bool getPosition(LLCoordScreen *position);
+    /*virtual*/ bool getSize(LLCoordScreen *size);
+    /*virtual*/ bool getSize(LLCoordWindow *size);
+    /*virtual*/ bool setPosition(LLCoordScreen position);
+    /*virtual*/ bool setSizeImpl(LLCoordScreen size);
+    /*virtual*/ bool setSizeImpl(LLCoordWindow size);
+    /*virtual*/ bool switchContext(bool fullscreen, const LLCoordScreen &size, bool enable_vsync, const LLCoordScreen * const posp = NULL);
     /*virtual*/ void setTitle(const std::string title);
     void* createSharedContext() override;
     void makeContextCurrent(void* context) override;
     void destroySharedContext(void* context) override;
     /*virtual*/ void toggleVSync(bool enable_vsync);
-    /*virtual*/ BOOL setCursorPosition(LLCoordWindow position);
-    /*virtual*/ BOOL getCursorPosition(LLCoordWindow *position);
-    /*virtual*/ BOOL getCursorDelta(LLCoordCommon* delta);
+    /*virtual*/ bool setCursorPosition(LLCoordWindow position);
+    /*virtual*/ bool getCursorPosition(LLCoordWindow *position);
+    /*virtual*/ bool getCursorDelta(LLCoordCommon* delta);
     /*virtual*/ void showCursor();
     /*virtual*/ void hideCursor();
     /*virtual*/ void showCursorFromMouseMove();
     /*virtual*/ void hideCursorUntilMouseMove();
-    /*virtual*/ BOOL isCursorHidden();
+    /*virtual*/ bool isCursorHidden();
     /*virtual*/ void updateCursor();
     /*virtual*/ ECursorType getCursor() const;
     /*virtual*/ void captureMouse();
     /*virtual*/ void releaseMouse();
-    /*virtual*/ void setMouseClipping( BOOL b );
-    /*virtual*/ BOOL isClipboardTextAvailable();
-    /*virtual*/ BOOL pasteTextFromClipboard(LLWString &dst);
-    /*virtual*/ BOOL copyTextToClipboard(const LLWString &src);
+    /*virtual*/ void setMouseClipping( bool b );
+    /*virtual*/ bool isClipboardTextAvailable();
+    /*virtual*/ bool pasteTextFromClipboard(LLWString &dst);
+    /*virtual*/ bool copyTextToClipboard(const LLWString &src);
     /*virtual*/ void flashIcon(F32 seconds);
     /*virtual*/ F32 getGamma();
-    /*virtual*/ BOOL setGamma(const F32 gamma); // Set the gamma
+    /*virtual*/ bool setGamma(const F32 gamma); // Set the gamma
     /*virtual*/ void setFSAASamples(const U32 fsaa_samples);
     /*virtual*/ U32 getFSAASamples();
-    /*virtual*/ BOOL restoreGamma();            // Restore original gamma table (before updating gamma)
+    /*virtual*/ bool restoreGamma();            // Restore original gamma table (before updating gamma)
     /*virtual*/ ESwapMethod getSwapMethod() { return mSwapMethod; }
     /*virtual*/ void gatherInput();
     /*virtual*/ void delayInputProcessing();
@@ -96,27 +96,25 @@ public:
     /*virtual*/ void restoreGLContext() {};
 
     // handy coordinate space conversion routines
-    /*virtual*/ BOOL convertCoords(LLCoordScreen from, LLCoordWindow *to);
-    /*virtual*/ BOOL convertCoords(LLCoordWindow from, LLCoordScreen *to);
-    /*virtual*/ BOOL convertCoords(LLCoordWindow from, LLCoordGL *to);
-    /*virtual*/ BOOL convertCoords(LLCoordGL from, LLCoordWindow *to);
-    /*virtual*/ BOOL convertCoords(LLCoordScreen from, LLCoordGL *to);
-    /*virtual*/ BOOL convertCoords(LLCoordGL from, LLCoordScreen *to);
+    /*virtual*/ bool convertCoords(LLCoordScreen from, LLCoordWindow *to);
+    /*virtual*/ bool convertCoords(LLCoordWindow from, LLCoordScreen *to);
+    /*virtual*/ bool convertCoords(LLCoordWindow from, LLCoordGL *to);
+    /*virtual*/ bool convertCoords(LLCoordGL from, LLCoordWindow *to);
+    /*virtual*/ bool convertCoords(LLCoordScreen from, LLCoordGL *to);
+    /*virtual*/ bool convertCoords(LLCoordGL from, LLCoordScreen *to);
 
     /*virtual*/ LLWindowResolution* getSupportedResolutions(S32 &num_resolutions);
     /*virtual*/ F32 getNativeAspectRatio();
     /*virtual*/ F32 getPixelAspectRatio();
     /*virtual*/ void setNativeAspectRatio(F32 ratio) { mOverrideAspectRatio = ratio; }
 
-    U32 getAvailableVRAMMegabytes() override;
-
-    /*virtual*/ BOOL dialogColorPicker(F32 *r, F32 *g, F32 *b );
+    /*virtual*/ bool dialogColorPicker(F32 *r, F32 *g, F32 *b );
 
     /*virtual*/ void *getPlatformWindow();
     /*virtual*/ void bringToFront();
     /*virtual*/ void focusClient();
 
-    /*virtual*/ void allowLanguageTextInput(LLPreeditor *preeditor, BOOL b);
+    /*virtual*/ void allowLanguageTextInput(LLPreeditor *preeditor, bool b);
     /*virtual*/ void setLanguageTextInput( const LLCoordGL & pos );
     /*virtual*/ void updateLanguageTextInputArea();
     /*virtual*/ void interruptLanguageTextInput();
@@ -141,47 +139,43 @@ public:
 protected:
     LLWindowWin32(LLWindowCallbacks* callbacks,
         const std::string& title, const std::string& name, int x, int y, int width, int height, U32 flags,
-        BOOL fullscreen, BOOL clearBg, BOOL enable_vsync, BOOL use_gl,
-        BOOL ignore_pixel_depth, U32 fsaa_samples, U32 max_cores, U32 max_vram, F32 max_gl_version);
+        bool fullscreen, bool clearBg, bool enable_vsync, bool use_gl,
+        bool ignore_pixel_depth, U32 fsaa_samples, U32 max_cores, F32 max_gl_version);
     ~LLWindowWin32();
 
     void    initCursors();
-    void    initInputDevices();
     HCURSOR loadColorCursor(LPCTSTR name);
-    BOOL    isValid();
+    bool    isValid();
     void    moveWindow(const LLCoordScreen& position,const LLCoordScreen& size);
     virtual LLSD    getNativeKeyData();
 
     // Changes display resolution. Returns true if successful
-    BOOL    setDisplayResolution(S32 width, S32 height, S32 bits, S32 refresh);
+    bool    setDisplayResolution(S32 width, S32 height, S32 bits, S32 refresh);
 
     // Go back to last fullscreen display resolution.
-    BOOL    setFullscreenResolution();
+    bool    setFullscreenResolution();
 
     // Restore the display resolution to its value before we ran the app.
-    BOOL    resetDisplayResolution();
+    bool    resetDisplayResolution();
 
-    BOOL    shouldPostQuit() { return mPostQuit; }
+    bool    shouldPostQuit() { return mPostQuit; }
 
-    void    fillCompositionForm(const LLRect& bounds, COMPOSITIONFORM *form);
     void    fillCandidateForm(const LLCoordGL& caret, const LLRect& bounds, CANDIDATEFORM *form);
     void    fillCharPosition(const LLCoordGL& caret, const LLRect& bounds, const LLRect& control, IMECHARPOSITION *char_position);
     void    fillCompositionLogfont(LOGFONT *logfont);
     U32     fillReconvertString(const LLWString &text, S32 focus, S32 focus_length, RECONVERTSTRING *reconvert_string);
     void    handleStartCompositionMessage();
     void    handleCompositionMessage(U32 indexes);
-    BOOL    handleImeRequests(WPARAM request, LPARAM param, LRESULT *result);
+    bool    handleImeRequests(WPARAM request, LPARAM param, LRESULT *result);
 
 protected:
     //
     // Platform specific methods
     //
 
-    BOOL    getClientRectInScreenSpace(RECT* rectp);
-    void    updateJoystick( );
+    bool    getClientRectInScreenSpace(RECT* rectp);
 
     static LRESULT CALLBACK mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_param, LPARAM l_param);
-    static BOOL CALLBACK enumChildWindows(HWND h_wnd, LPARAM l_param);
 
 
     //
@@ -209,7 +203,7 @@ protected:
 
     MASK        mMouseMask;
 
-    static BOOL sIsClassRegistered; // has the window class been registered?
+    static bool sIsClassRegistered; // has the window class been registered?
 
     F32         mCurrentGamma;
     U32         mFSAASamples;
@@ -217,16 +211,16 @@ protected:
     F32         mMaxGLVersion; // maximum OpenGL version to attempt to use (clamps to 3.2 - 4.6)
     WORD        mPrevGammaRamp[3][256];
     WORD        mCurrentGammaRamp[3][256];
-    BOOL        mCustomGammaSet;
+    bool        mCustomGammaSet;
 
     LPWSTR      mIconResource;
-    BOOL        mInputProcessingPaused;
+    bool        mInputProcessingPaused;
 
     // The following variables are for Language Text Input control.
     // They are all static, since one context is shared by all LLWindowWin32
     // instances.
-    static BOOL     sLanguageTextInputAllowed;
-    static BOOL     sWinIMEOpened;
+    static bool     sLanguageTextInputAllowed;
+    static bool     sWinIMEOpened;
     static HKL      sWinInputLocale;
     static DWORD    sWinIMEConversionMode;
     static DWORD    sWinIMESentenceMode;
@@ -245,7 +239,7 @@ protected:
     U32             mRawWParam;
     U32             mRawLParam;
 
-    BOOL            mMouseVanish;
+    bool            mMouseVanish;
 
     // Cached values of GetWindowRect and GetClientRect to be used by app thread
     void updateWindowRect();
@@ -288,8 +282,6 @@ private:
 extern LLW32MsgCallback gAsyncMsgCallback;
 extern LPWSTR gIconResource;
 
-static void handleMessage( const MSG& msg );
-
 S32 OSMessageBoxWin32(const std::string& text, const std::string& caption, U32 type);
 
 #endif //LL_LLWINDOWWIN32_H
diff --git a/indra/llxml/llcontrol.cpp b/indra/llxml/llcontrol.cpp
index 5b6d197e52..82e07e03c9 100644
--- a/indra/llxml/llcontrol.cpp
+++ b/indra/llxml/llcontrol.cpp
@@ -59,8 +59,6 @@ template <> eControlType get_control_type<U32>();
 template <> eControlType get_control_type<S32>();
 template <> eControlType get_control_type<F32>();
 template <> eControlType get_control_type<bool>();
-// Yay BOOL, its really an S32.
-//template <> eControlType get_control_type<BOOL> () ;
 template <> eControlType get_control_type<std::string>();
 
 template <> eControlType get_control_type<LLVector3>();
@@ -79,19 +77,19 @@ template <> LLSD convert_to_llsd<LLColor4>(const LLColor4& in);
 template <> LLSD convert_to_llsd<LLColor3>(const LLColor3& in);
 template <> LLSD convert_to_llsd<LLColor4U>(const LLColor4U& in);
 
-template <> bool convert_from_llsd<bool>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> S32 convert_from_llsd<S32>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> U32 convert_from_llsd<U32>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> F32 convert_from_llsd<F32>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> std::string convert_from_llsd<std::string>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> LLWString convert_from_llsd<LLWString>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> LLVector3 convert_from_llsd<LLVector3>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> LLVector3d convert_from_llsd<LLVector3d>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> LLRect convert_from_llsd<LLRect>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> LLColor4 convert_from_llsd<LLColor4>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> LLColor4U convert_from_llsd<LLColor4U>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> LLColor3 convert_from_llsd<LLColor3>(const LLSD& sd, eControlType type, const std::string& control_name);
-template <> LLSD convert_from_llsd<LLSD>(const LLSD& sd, eControlType type, const std::string& control_name);
+template <> bool convert_from_llsd<bool>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> S32 convert_from_llsd<S32>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> U32 convert_from_llsd<U32>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> F32 convert_from_llsd<F32>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> std::string convert_from_llsd<std::string>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> LLWString convert_from_llsd<LLWString>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> LLVector3 convert_from_llsd<LLVector3>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> LLVector3d convert_from_llsd<LLVector3d>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> LLRect convert_from_llsd<LLRect>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> LLColor4 convert_from_llsd<LLColor4>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> LLColor4U convert_from_llsd<LLColor4U>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> LLColor3 convert_from_llsd<LLColor3>(const LLSD& sd, eControlType type, std::string_view control_name);
+template <> LLSD convert_from_llsd<LLSD>(const LLSD& sd, eControlType type, std::string_view control_name);
 
 //this defines the current version of the settings file
 const S32 CURRENT_VERSION = 101;
@@ -178,10 +176,10 @@ LLSD LLControlVariable::getComparableValue(const LLSD& value)
     LLSD storable_value;
     if(TYPE_BOOLEAN == type() && value.isString())
     {
-        BOOL temp;
+        bool temp;
         if(LLStringUtil::convertToBOOL(value.asString(), temp))
         {
-            storable_value = (bool)temp;
+            storable_value = temp;
         }
         else
         {
@@ -212,7 +210,7 @@ LLSD LLControlVariable::getComparableValue(const LLSD& value)
 
 void LLControlVariable::setValue(const LLSD& new_value, bool saved_value)
 {
-    if (mValidateSignal(this, new_value) == false)
+    if (!mValidateSignal(this, new_value))
     {
         // can not set new value, exit
         return;
@@ -220,12 +218,12 @@ void LLControlVariable::setValue(const LLSD& new_value, bool saved_value)
 
     LLSD storable_value = getComparableValue(new_value);
     LLSD original_value = getValue();
-    bool value_changed = llsd_compare(original_value, storable_value) == FALSE;
+    bool value_changed = !llsd_compare(original_value, storable_value);
     if(saved_value)
     {
         // If we're going to save this value, return to default but don't fire
         resetToDefault(false);
-        if (llsd_compare(mValues.back(), storable_value) == FALSE)
+        if (!llsd_compare(mValues.back(), storable_value))
         {
             mValues.push_back(storable_value);
         }
@@ -235,7 +233,7 @@ void LLControlVariable::setValue(const LLSD& new_value, bool saved_value)
         // This is an unsaved value. Its needs to reside at
         // mValues[2] (or greater). It must not affect
         // the result of getSaveValue()
-        if (llsd_compare(mValues.back(), storable_value) == FALSE)
+        if (!llsd_compare(mValues.back(), storable_value))
         {
             while(mValues.size() > 2)
             {
@@ -269,10 +267,10 @@ void LLControlVariable::setDefaultValue(const LLSD& value)
 
     LLSD comparable_value = getComparableValue(value);
     LLSD original_value = getValue();
-    bool value_changed = (llsd_compare(original_value, comparable_value) == FALSE);
+    bool value_changed = !llsd_compare(original_value, comparable_value);
     resetToDefault(false);
     mValues[0] = comparable_value;
-    if(value_changed)
+    if (value_changed)
     {
         firePropertyChanged(original_value);
     }
@@ -343,14 +341,14 @@ LLSD LLControlVariable::getSaveValue() const
     return mValues[0];
 }
 
-LLPointer<LLControlVariable> LLControlGroup::getControl(const std::string& name)
+LLPointer<LLControlVariable> LLControlGroup::getControl(std::string_view name)
 {
     if (mSettingsProfile)
     {
         incrCount(name);
     }
 
-    ctrl_name_table_t::iterator iter = mNameTable.find(name);
+    ctrl_name_table_t::iterator iter = mNameTable.find(name.data());
     return iter == mNameTable.end() ? LLPointer<LLControlVariable>() : iter->second;
 }
 
@@ -465,7 +463,7 @@ std::string LLControlGroup::typeEnumToString(eControlType typeenum)
     return mTypeString[typeenum];
 }
 
-LLControlVariable* LLControlGroup::declareControl(const std::string& name, eControlType type, const LLSD initial_val, const std::string& comment, LLControlVariable::ePersist persist, BOOL hidefromsettingseditor)
+LLControlVariable* LLControlGroup::declareControl(const std::string& name, eControlType type, const LLSD initial_val, const std::string& comment, LLControlVariable::ePersist persist, bool hidefromsettingseditor)
 {
     LLControlVariable* existing_control = getControl(name);
     if (existing_control)
@@ -508,7 +506,7 @@ LLControlVariable* LLControlGroup::declareF32(const std::string& name, const F32
     return declareControl(name, TYPE_F32, initial_val, comment, persist);
 }
 
-LLControlVariable* LLControlGroup::declareBOOL(const std::string& name, const BOOL initial_val, const std::string& comment, LLControlVariable::ePersist persist)
+LLControlVariable* LLControlGroup::declareBOOL(const std::string& name, const bool initial_val, const std::string& comment, LLControlVariable::ePersist persist)
 {
     return declareControl(name, TYPE_BOOLEAN, initial_val, comment, persist);
 }
@@ -553,46 +551,46 @@ LLControlVariable* LLControlGroup::declareLLSD(const std::string& name, const LL
     return declareControl(name, TYPE_LLSD, initial_val, comment, persist);
 }
 
-void LLControlGroup::incrCount(const std::string& name)
+void LLControlGroup::incrCount(std::string_view name)
 {
     if (0.0 == start_time)
     {
         start_time = LLTimer::getTotalSeconds();
     }
-    getCount[name] = getCount[name].asInteger() + 1;
+    getCount[name.data()] = getCount[name.data()].asInteger() + 1;
 }
 
-BOOL LLControlGroup::getBOOL(const std::string& name)
+bool LLControlGroup::getBOOL(std::string_view name)
 {
-    return (BOOL)get<bool>(name);
+    return get<bool>(name);
 }
 
-S32 LLControlGroup::getS32(const std::string& name)
+S32 LLControlGroup::getS32(std::string_view name)
 {
     return get<S32>(name);
 }
 
-U32 LLControlGroup::getU32(const std::string& name)
+U32 LLControlGroup::getU32(std::string_view name)
 {
     return get<U32>(name);
 }
 
-F32 LLControlGroup::getF32(const std::string& name)
+F32 LLControlGroup::getF32(std::string_view name)
 {
     return get<F32>(name);
 }
 
-std::string LLControlGroup::getString(const std::string& name)
+std::string LLControlGroup::getString(std::string_view name)
 {
     return get<std::string>(name);
 }
 
-LLWString LLControlGroup::getWString(const std::string& name)
+LLWString LLControlGroup::getWString(std::string_view name)
 {
     return get<LLWString>(name);
 }
 
-std::string LLControlGroup::getText(const std::string& name)
+std::string LLControlGroup::getText(std::string_view name)
 {
     std::string utf8_string = getString(name);
     LLStringUtil::replaceChar(utf8_string, '^', '\n');
@@ -600,43 +598,43 @@ std::string LLControlGroup::getText(const std::string& name)
     return (utf8_string);
 }
 
-LLVector3 LLControlGroup::getVector3(const std::string& name)
+LLVector3 LLControlGroup::getVector3(std::string_view name)
 {
     return get<LLVector3>(name);
 }
 
-LLVector3d LLControlGroup::getVector3d(const std::string& name)
+LLVector3d LLControlGroup::getVector3d(std::string_view name)
 {
     return get<LLVector3d>(name);
 }
 
-LLQuaternion LLControlGroup::getQuaternion(const std::string& name)
+LLQuaternion LLControlGroup::getQuaternion(std::string_view name)
 {
     return get<LLQuaternion>(name);
 }
 
-LLRect LLControlGroup::getRect(const std::string& name)
+LLRect LLControlGroup::getRect(std::string_view name)
 {
     return get<LLRect>(name);
 }
 
 
-LLColor4 LLControlGroup::getColor(const std::string& name)
+LLColor4 LLControlGroup::getColor(std::string_view name)
 {
     return get<LLColor4>(name);
 }
 
-LLColor4 LLControlGroup::getColor4(const std::string& name)
+LLColor4 LLControlGroup::getColor4(std::string_view name)
 {
     return get<LLColor4>(name);
 }
 
-LLColor3 LLControlGroup::getColor3(const std::string& name)
+LLColor3 LLControlGroup::getColor3(std::string_view name)
 {
     return get<LLColor3>(name);
 }
 
-LLSD LLControlGroup::getLLSD(const std::string& name)
+LLSD LLControlGroup::getLLSD(std::string_view name)
 {
     return get<LLSD>(name);
 }
@@ -659,7 +657,7 @@ LLSD LLControlGroup::asLLSD(bool diffs_only)
     return result;
 }
 
-BOOL LLControlGroup::controlExists(const std::string& name)
+bool LLControlGroup::controlExists(const std::string& name)
 {
     ctrl_name_table_t::iterator iter = mNameTable.find(name);
     return iter != mNameTable.end();
@@ -670,67 +668,67 @@ BOOL LLControlGroup::controlExists(const std::string& name)
 // Set functions
 //-------------------------------------------------------------------
 
-void LLControlGroup::setBOOL(const std::string& name, BOOL val)
+void LLControlGroup::setBOOL(std::string_view name, bool val)
 {
     set<bool>(name, val);
 }
 
 
-void LLControlGroup::setS32(const std::string& name, S32 val)
+void LLControlGroup::setS32(std::string_view name, S32 val)
 {
     set(name, val);
 }
 
 
-void LLControlGroup::setF32(const std::string& name, F32 val)
+void LLControlGroup::setF32(std::string_view name, F32 val)
 {
     set(name, val);
 }
 
 
-void LLControlGroup::setU32(const std::string& name, U32 val)
+void LLControlGroup::setU32(std::string_view name, U32 val)
 {
     set(name, val);
 }
 
 
-void LLControlGroup::setString(const std::string& name, const std::string &val)
+void LLControlGroup::setString(std::string_view name, const std::string &val)
 {
     set(name, val);
 }
 
 
-void LLControlGroup::setVector3(const std::string& name, const LLVector3 &val)
+void LLControlGroup::setVector3(std::string_view name, const LLVector3 &val)
 {
     set(name, val);
 }
 
-void LLControlGroup::setVector3d(const std::string& name, const LLVector3d &val)
+void LLControlGroup::setVector3d(std::string_view name, const LLVector3d &val)
 {
     set(name, val);
 }
 
-void LLControlGroup::setQuaternion(const std::string& name, const LLQuaternion &val)
+void LLControlGroup::setQuaternion(std::string_view name, const LLQuaternion &val)
 {
     set(name, val);
 }
 
-void LLControlGroup::setRect(const std::string& name, const LLRect &val)
+void LLControlGroup::setRect(std::string_view name, const LLRect &val)
 {
     set(name, val);
 }
 
-void LLControlGroup::setColor4(const std::string& name, const LLColor4 &val)
+void LLControlGroup::setColor4(std::string_view name, const LLColor4 &val)
 {
     set(name, val);
 }
 
-void LLControlGroup::setLLSD(const std::string& name, const LLSD& val)
+void LLControlGroup::setLLSD(std::string_view name, const LLSD& val)
 {
     set(name, val);
 }
 
-void LLControlGroup::setUntypedValue(const std::string& name, const LLSD& val)
+void LLControlGroup::setUntypedValue(std::string_view name, const LLSD& val)
 {
     if (name.empty())
     {
@@ -755,7 +753,7 @@ void LLControlGroup::setUntypedValue(const std::string& name, const LLSD& val)
 //---------------------------------------------------------------
 
 // Returns number of controls loaded, so 0 if failure
-U32 LLControlGroup::loadFromFileLegacy(const std::string& filename, BOOL require_declaration, eControlType declare_as)
+U32 LLControlGroup::loadFromFileLegacy(const std::string& filename, bool require_declaration, eControlType declare_as)
 {
     std::string name;
 
@@ -791,7 +789,7 @@ U32 LLControlGroup::loadFromFileLegacy(const std::string& filename, BOOL require
     {
         name = child_nodep->getName();
 
-        BOOL declared = controlExists(name);
+        bool declared = controlExists(name);
 
         if (require_declaration && !declared)
         {
@@ -859,7 +857,7 @@ U32 LLControlGroup::loadFromFileLegacy(const std::string& filename, BOOL require
             break;
         case TYPE_BOOLEAN:
             {
-                BOOL initial = FALSE;
+                bool initial = false;
 
                 child_nodep->getAttributeBOOL("value", initial);
                 control->set(initial);
@@ -952,7 +950,7 @@ U32 LLControlGroup::loadFromFileLegacy(const std::string& filename, BOOL require
     return validitems;
 }
 
-U32 LLControlGroup::saveToFile(const std::string& filename, BOOL nondefault_only)
+U32 LLControlGroup::saveToFile(const std::string& filename, bool nondefault_only)
 {
     LLSD settings;
     int num_saved = 0;
@@ -1004,7 +1002,7 @@ U32 LLControlGroup::loadFromFile(const std::string& filename, bool set_default_v
     {
         infile.close();
         LL_WARNS("Settings") << "Unable to parse LLSD control file " << filename << ". Trying Legacy Method." << LL_ENDL;
-        return loadFromFileLegacy(filename, TRUE, TYPE_STRING);
+        return loadFromFileLegacy(filename, true, TYPE_STRING);
     }
 
     U32 validitems = 0;
@@ -1162,7 +1160,7 @@ void main()
     bar = new LLControlVariable<S32>("gBar", 10, 2, 22);
     gGlobals.addEntry("gBar", bar);
 
-    baz = new LLControlVariable<BOOL>("gBaz", FALSE);
+    baz = new LLControlVariable<bool>("gBaz", false);
     gGlobals.addEntry("gBaz", baz);
 
     // test retrieval
@@ -1190,7 +1188,7 @@ void main()
 
     // ...invalid data type
     getfoo = (F32_CONTROL) gGlobals.resolveName("gFoo");
-    getfoo->set(TRUE);
+    getfoo->set(true);
     getfoo->dump();
 
     // ...out of range data
@@ -1224,13 +1222,7 @@ template <> eControlType get_control_type<bool> ()
 {
     return TYPE_BOOLEAN;
 }
-/*
-// Yay BOOL, its really an S32.
-template <> eControlType get_control_type<BOOL> ()
-{
-    return TYPE_BOOLEAN;
-}
-*/
+
 template <> eControlType get_control_type<std::string>()
 {
     return TYPE_STRING;
@@ -1313,19 +1305,19 @@ template <> LLSD convert_to_llsd<LLColor4U>(const LLColor4U& in)
 
 
 template<>
-bool convert_from_llsd<bool>(const LLSD& sd, eControlType type, const std::string& control_name)
+bool convert_from_llsd<bool>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     if (type == TYPE_BOOLEAN)
         return sd.asBoolean();
     else
     {
-        CONTROL_ERRS << "Invalid BOOL value for " << control_name << ": " << LLControlGroup::typeEnumToString(type) << " " << sd << LL_ENDL;
-        return FALSE;
+        CONTROL_ERRS << "Invalid bool value for " << control_name << ": " << LLControlGroup::typeEnumToString(type) << " " << sd << LL_ENDL;
+        return false;
     }
 }
 
 template<>
-S32 convert_from_llsd<S32>(const LLSD& sd, eControlType type, const std::string& control_name)
+S32 convert_from_llsd<S32>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     if (type == TYPE_S32)
         return sd.asInteger();
@@ -1337,7 +1329,7 @@ S32 convert_from_llsd<S32>(const LLSD& sd, eControlType type, const std::string&
 }
 
 template<>
-U32 convert_from_llsd<U32>(const LLSD& sd, eControlType type, const std::string& control_name)
+U32 convert_from_llsd<U32>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     if (type == TYPE_U32)
         return sd.asInteger();
@@ -1349,7 +1341,7 @@ U32 convert_from_llsd<U32>(const LLSD& sd, eControlType type, const std::string&
 }
 
 template<>
-F32 convert_from_llsd<F32>(const LLSD& sd, eControlType type, const std::string& control_name)
+F32 convert_from_llsd<F32>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     if (type == TYPE_F32)
         return (F32) sd.asReal();
@@ -1361,7 +1353,7 @@ F32 convert_from_llsd<F32>(const LLSD& sd, eControlType type, const std::string&
 }
 
 template<>
-std::string convert_from_llsd<std::string>(const LLSD& sd, eControlType type, const std::string& control_name)
+std::string convert_from_llsd<std::string>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     if (type == TYPE_STRING)
         return sd.asString();
@@ -1373,13 +1365,13 @@ std::string convert_from_llsd<std::string>(const LLSD& sd, eControlType type, co
 }
 
 template<>
-LLWString convert_from_llsd<LLWString>(const LLSD& sd, eControlType type, const std::string& control_name)
+LLWString convert_from_llsd<LLWString>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     return utf8str_to_wstring(convert_from_llsd<std::string>(sd, type, control_name));
 }
 
 template<>
-LLVector3 convert_from_llsd<LLVector3>(const LLSD& sd, eControlType type, const std::string& control_name)
+LLVector3 convert_from_llsd<LLVector3>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     if (type == TYPE_VEC3)
         return (LLVector3)sd;
@@ -1391,7 +1383,7 @@ LLVector3 convert_from_llsd<LLVector3>(const LLSD& sd, eControlType type, const
 }
 
 template<>
-LLVector3d convert_from_llsd<LLVector3d>(const LLSD& sd, eControlType type, const std::string& control_name)
+LLVector3d convert_from_llsd<LLVector3d>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     if (type == TYPE_VEC3D)
         return (LLVector3d)sd;
@@ -1403,7 +1395,7 @@ LLVector3d convert_from_llsd<LLVector3d>(const LLSD& sd, eControlType type, cons
 }
 
 template<>
-LLQuaternion convert_from_llsd<LLQuaternion>(const LLSD& sd, eControlType type, const std::string& control_name)
+LLQuaternion convert_from_llsd<LLQuaternion>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     if (type == TYPE_QUAT)
         return (LLQuaternion)sd;
@@ -1415,7 +1407,7 @@ LLQuaternion convert_from_llsd<LLQuaternion>(const LLSD& sd, eControlType type,
 }
 
 template<>
-LLRect convert_from_llsd<LLRect>(const LLSD& sd, eControlType type, const std::string& control_name)
+LLRect convert_from_llsd<LLRect>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     if (type == TYPE_RECT)
         return LLRect(sd);
@@ -1428,7 +1420,7 @@ LLRect convert_from_llsd<LLRect>(const LLSD& sd, eControlType type, const std::s
 
 
 template<>
-LLColor4 convert_from_llsd<LLColor4>(const LLSD& sd, eControlType type, const std::string& control_name)
+LLColor4 convert_from_llsd<LLColor4>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     if (type == TYPE_COL4)
     {
@@ -1460,7 +1452,7 @@ LLColor4 convert_from_llsd<LLColor4>(const LLSD& sd, eControlType type, const st
 }
 
 template<>
-LLColor3 convert_from_llsd<LLColor3>(const LLSD& sd, eControlType type, const std::string& control_name)
+LLColor3 convert_from_llsd<LLColor3>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     if (type == TYPE_COL3)
         return sd;
@@ -1472,7 +1464,7 @@ LLColor3 convert_from_llsd<LLColor3>(const LLSD& sd, eControlType type, const st
 }
 
 template<>
-LLSD convert_from_llsd<LLSD>(const LLSD& sd, eControlType type, const std::string& control_name)
+LLSD convert_from_llsd<LLSD>(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     return sd;
 }
@@ -1485,7 +1477,6 @@ DECL_LLCC(U32, (U32)666);
 DECL_LLCC(S32, (S32)-666);
 DECL_LLCC(F32, (F32)-666.666);
 DECL_LLCC(bool, true);
-DECL_LLCC(BOOL, FALSE);
 static LLCachedControl<std::string> mySetting_string("TestCachedControlstring", "Default String Value");
 DECL_LLCC(LLVector3, LLVector3(1.0f, 2.0f, 3.0f));
 DECL_LLCC(LLVector3d, LLVector3d(6.0f, 5.0f, 4.0f));
@@ -1504,7 +1495,6 @@ void test_cached_control()
     TEST_LLCC(S32, (S32)-666);
     TEST_LLCC(F32, (F32)-666.666);
     TEST_LLCC(bool, true);
-    TEST_LLCC(BOOL, FALSE);
     if((std::string)mySetting_string != "Default String Value") LL_ERRS() << "Fail string" << LL_ENDL;
     TEST_LLCC(LLVector3, LLVector3(1.0f, 2.0f, 3.0f));
     TEST_LLCC(LLVector3d, LLVector3d(6.0f, 5.0f, 4.0f));
diff --git a/indra/llxml/llcontrol.h b/indra/llxml/llcontrol.h
index 37663a6fb2..1b04729a82 100644
--- a/indra/llxml/llcontrol.h
+++ b/indra/llxml/llcontrol.h
@@ -144,7 +144,7 @@ public:
     LLSD getSaveValue() const;
 
     void set(const LLSD& val)   { setValue(val); }
-    void setValue(const LLSD& value, bool saved_value = TRUE);
+    void setValue(const LLSD& value, bool saved_value = true);
     void setDefaultValue(const LLSD& value);
     void setPersist(ePersist);
     void setHiddenFromSettingsEditor(bool hide);
@@ -177,7 +177,7 @@ LLSD convert_to_llsd(const T& in)
 }
 
 template <class T>
-T convert_from_llsd(const LLSD& sd, eControlType type, const std::string& control_name)
+T convert_from_llsd(const LLSD& sd, eControlType type, std::string_view control_name)
 {
     // needs specialization
     return T(sd);
@@ -201,7 +201,7 @@ public:
     ~LLControlGroup();
     void cleanup();
 
-    LLControlVariablePtr getControl(const std::string& name);
+    LLControlVariablePtr getControl(std::string_view name);
 
     struct ApplyFunctor
     {
@@ -210,11 +210,11 @@ public:
     };
     void applyToAll(ApplyFunctor* func);
 
-    LLControlVariable* declareControl(const std::string& name, eControlType type, const LLSD initial_val, const std::string& comment, LLControlVariable::ePersist persist, BOOL hidefromsettingseditor = FALSE);
+    LLControlVariable* declareControl(const std::string& name, eControlType type, const LLSD initial_val, const std::string& comment, LLControlVariable::ePersist persist, bool hidefromsettingseditor = false);
     LLControlVariable* declareU32(const std::string& name, U32 initial_val, const std::string& comment, LLControlVariable::ePersist persist = LLControlVariable::PERSIST_NONDFT);
     LLControlVariable* declareS32(const std::string& name, S32 initial_val, const std::string& comment, LLControlVariable::ePersist persist = LLControlVariable::PERSIST_NONDFT);
     LLControlVariable* declareF32(const std::string& name, F32 initial_val, const std::string& comment, LLControlVariable::ePersist persist = LLControlVariable::PERSIST_NONDFT);
-    LLControlVariable* declareBOOL(const std::string& name, BOOL initial_val, const std::string& comment, LLControlVariable::ePersist persist = LLControlVariable::PERSIST_NONDFT);
+    LLControlVariable* declareBOOL(const std::string& name, bool initial_val, const std::string& comment, LLControlVariable::ePersist persist = LLControlVariable::PERSIST_NONDFT);
     LLControlVariable* declareString(const std::string& name, const std::string &initial_val, const std::string& comment, LLControlVariable::ePersist persist = LLControlVariable::PERSIST_NONDFT);
     LLControlVariable* declareVec3(const std::string& name, const LLVector3 &initial_val,const std::string& comment,  LLControlVariable::ePersist persist = LLControlVariable::PERSIST_NONDFT);
     LLControlVariable* declareVec3d(const std::string& name, const LLVector3d &initial_val, const std::string& comment, LLControlVariable::ePersist persist = LLControlVariable::PERSIST_NONDFT);
@@ -224,28 +224,28 @@ public:
     LLControlVariable* declareColor3(const std::string& name, const LLColor3 &initial_val, const std::string& comment, LLControlVariable::ePersist persist = LLControlVariable::PERSIST_NONDFT);
     LLControlVariable* declareLLSD(const std::string& name, const LLSD &initial_val, const std::string& comment, LLControlVariable::ePersist persist = LLControlVariable::PERSIST_NONDFT);
 
-    std::string getString(const std::string& name);
-    std::string getText(const std::string& name);
-    BOOL        getBOOL(const std::string& name);
-    S32         getS32(const std::string& name);
-    F32         getF32(const std::string& name);
-    U32         getU32(const std::string& name);
+    std::string getString(std::string_view name);
+    std::string getText(std::string_view name);
+    bool        getBOOL(std::string_view name);
+    S32         getS32(std::string_view name);
+    F32         getF32(std::string_view name);
+    U32         getU32(std::string_view name);
 
-    LLWString   getWString(const std::string& name);
-    LLVector3   getVector3(const std::string& name);
-    LLVector3d  getVector3d(const std::string& name);
-    LLRect      getRect(const std::string& name);
-    LLSD        getLLSD(const std::string& name);
-    LLQuaternion    getQuaternion(const std::string& name);
+    LLWString   getWString(std::string_view name);
+    LLVector3   getVector3(std::string_view name);
+    LLVector3d  getVector3d(std::string_view name);
+    LLRect      getRect(std::string_view name);
+    LLSD        getLLSD(std::string_view name);
+    LLQuaternion    getQuaternion(std::string_view name);
 
-    LLColor4    getColor(const std::string& name);
-    LLColor4    getColor4(const std::string& name);
-    LLColor3    getColor3(const std::string& name);
+    LLColor4    getColor(std::string_view name);
+    LLColor4    getColor4(std::string_view name);
+    LLColor3    getColor3(std::string_view name);
 
     LLSD        asLLSD(bool diffs_only);
 
     // generic getter
-    template<typename T> T get(const std::string& name)
+    template<typename T> T get(std::string_view name)
     {
         LL_PROFILE_ZONE_SCOPED_CATEGORY_LLSD;
         LLControlVariable* control = getControl(name);
@@ -265,23 +265,23 @@ public:
         return convert_from_llsd<T>(value, type, name);
     }
 
-    void    setBOOL(const std::string& name, BOOL val);
-    void    setS32(const std::string& name, S32 val);
-    void    setF32(const std::string& name, F32 val);
-    void    setU32(const std::string& name, U32 val);
-    void    setString(const std::string&  name, const std::string& val);
-    void    setVector3(const std::string& name, const LLVector3 &val);
-    void    setVector3d(const std::string& name, const LLVector3d &val);
-    void    setQuaternion(const std::string& name, const LLQuaternion &val);
-    void    setRect(const std::string& name, const LLRect &val);
-    void    setColor4(const std::string& name, const LLColor4 &val);
-    void    setLLSD(const std::string& name, const LLSD& val);
+    void    setBOOL(std::string_view name, bool val);
+    void    setS32(std::string_view name, S32 val);
+    void    setF32(std::string_view name, F32 val);
+    void    setU32(std::string_view name, U32 val);
+    void    setString(std::string_view  name, const std::string& val);
+    void    setVector3(std::string_view name, const LLVector3 &val);
+    void    setVector3d(std::string_view name, const LLVector3d &val);
+    void    setQuaternion(std::string_view name, const LLQuaternion &val);
+    void    setRect(std::string_view name, const LLRect &val);
+    void    setColor4(std::string_view name, const LLColor4 &val);
+    void    setLLSD(std::string_view name, const LLSD& val);
 
     // type agnostic setter that takes LLSD
-    void    setUntypedValue(const std::string& name, const LLSD& val);
+    void    setUntypedValue(std::string_view name, const LLSD& val);
 
     // generic setter
-    template<typename T> void set(const std::string& name, const T& val)
+    template<typename T> void set(std::string_view name, const T& val)
     {
         LLControlVariable* control = getControl(name);
 
@@ -295,16 +295,16 @@ public:
         }
     }
 
-    BOOL    controlExists(const std::string& name);
+    bool    controlExists(const std::string& name);
 
     // Returns number of controls loaded, 0 if failed
     // If require_declaration is false, will auto-declare controls it finds
     // as the given type.
-    U32 loadFromFileLegacy(const std::string& filename, BOOL require_declaration = TRUE, eControlType declare_as = TYPE_STRING);
-    U32 saveToFile(const std::string& filename, BOOL nondefault_only);
+    U32 loadFromFileLegacy(const std::string& filename, bool require_declaration = true, eControlType declare_as = TYPE_STRING);
+    U32 saveToFile(const std::string& filename, bool nondefault_only);
     U32 loadFromFile(const std::string& filename, bool default_values = false, bool save_values = true);
     void    resetToDefaults();
-    void    incrCount(const std::string& name);
+    void    incrCount(std::string_view name);
 
     bool    mSettingsProfile;
 };
@@ -435,8 +435,6 @@ template <> eControlType get_control_type<U32>();
 template <> eControlType get_control_type<S32>();
 template <> eControlType get_control_type<F32>();
 template <> eControlType get_control_type<bool>();
-// Yay BOOL, its really an S32.
-//template <> eControlType get_control_type<BOOL> ()
 template <> eControlType get_control_type<std::string>();
 template <> eControlType get_control_type<LLVector3>();
 template <> eControlType get_control_type<LLVector3d>();
@@ -454,19 +452,19 @@ template <> LLSD convert_to_llsd<LLRect>(const LLRect& in);
 template <> LLSD convert_to_llsd<LLColor4>(const LLColor4& in);
 template <> LLSD convert_to_llsd<LLColor3>(const LLColor3& in);
 
-template<> std::string convert_from_llsd<std::string>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> LLWString convert_from_llsd<LLWString>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> LLVector3 convert_from_llsd<LLVector3>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> LLVector3d convert_from_llsd<LLVector3d>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> LLQuaternion convert_from_llsd<LLQuaternion>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> LLRect convert_from_llsd<LLRect>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> bool convert_from_llsd<bool>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> S32 convert_from_llsd<S32>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> F32 convert_from_llsd<F32>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> U32 convert_from_llsd<U32>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> LLColor3 convert_from_llsd<LLColor3>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> LLColor4 convert_from_llsd<LLColor4>(const LLSD& sd, eControlType type, const std::string& control_name);
-template<> LLSD convert_from_llsd<LLSD>(const LLSD& sd, eControlType type, const std::string& control_name);
+template<> std::string convert_from_llsd<std::string>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> LLWString convert_from_llsd<LLWString>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> LLVector3 convert_from_llsd<LLVector3>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> LLVector3d convert_from_llsd<LLVector3d>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> LLQuaternion convert_from_llsd<LLQuaternion>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> LLRect convert_from_llsd<LLRect>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> bool convert_from_llsd<bool>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> S32 convert_from_llsd<S32>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> F32 convert_from_llsd<F32>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> U32 convert_from_llsd<U32>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> LLColor3 convert_from_llsd<LLColor3>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> LLColor4 convert_from_llsd<LLColor4>(const LLSD& sd, eControlType type, std::string_view control_name);
+template<> LLSD convert_from_llsd<LLSD>(const LLSD& sd, eControlType type, std::string_view control_name);
 
 //#define TEST_CACHED_CONTROL 1
 #ifdef TEST_CACHED_CONTROL
diff --git a/indra/llxml/llxmlnode.cpp b/indra/llxml/llxmlnode.cpp
index d1c800dc7d..acfd3fb213 100644
--- a/indra/llxml/llxmlnode.cpp
+++ b/indra/llxml/llxmlnode.cpp
@@ -47,13 +47,13 @@
 #include "lldir.h"
 
 // static
-BOOL LLXMLNode::sStripEscapedStrings = TRUE;
-BOOL LLXMLNode::sStripWhitespaceValues = FALSE;
+bool LLXMLNode::sStripEscapedStrings = true;
+bool LLXMLNode::sStripWhitespaceValues = false;
 
 LLXMLNode::LLXMLNode() :
     mID(""),
     mParser(NULL),
-    mIsAttribute(FALSE),
+    mIsAttribute(false),
     mVersionMajor(0),
     mVersionMinor(0),
     mLength(0),
@@ -72,7 +72,7 @@ LLXMLNode::LLXMLNode() :
 {
 }
 
-LLXMLNode::LLXMLNode(const char* name, BOOL is_attribute) :
+LLXMLNode::LLXMLNode(const char* name, bool is_attribute) :
     mID(""),
     mParser(NULL),
     mIsAttribute(is_attribute),
@@ -94,7 +94,7 @@ LLXMLNode::LLXMLNode(const char* name, BOOL is_attribute) :
     mName = gStringTable.addStringEntry(name);
 }
 
-LLXMLNode::LLXMLNode(LLStringTableEntry* name, BOOL is_attribute) :
+LLXMLNode::LLXMLNode(LLStringTableEntry* name, bool is_attribute) :
     mID(""),
     mParser(NULL),
     mIsAttribute(is_attribute),
@@ -196,17 +196,17 @@ LLXMLNode::~LLXMLNode()
     mDefault = NULL;
 }
 
-BOOL LLXMLNode::isNull()
+bool LLXMLNode::isNull()
 {
     return (mName == NULL);
 }
 
 // protected
-BOOL LLXMLNode::removeChild(LLXMLNode *target_child)
+bool LLXMLNode::removeChild(LLXMLNode *target_child)
 {
     if (!target_child)
     {
-        return FALSE;
+        return false;
     }
     if (target_child->mIsAttribute)
     {
@@ -215,7 +215,7 @@ BOOL LLXMLNode::removeChild(LLXMLNode *target_child)
         {
             target_child->mParent = NULL;
             mAttributes.erase(children_itr);
-            return TRUE;
+            return true;
         }
     }
     else if (mChildren.notNull())
@@ -247,7 +247,7 @@ BOOL LLXMLNode::removeChild(LLXMLNode *target_child)
                 {
                     mChildren = NULL;
                 }
-                return TRUE;
+                return true;
             }
             else if (children_itr->first != target_child->mName)
             {
@@ -259,7 +259,7 @@ BOOL LLXMLNode::removeChild(LLXMLNode *target_child)
             }
         }
     }
-    return FALSE;
+    return false;
 }
 
 void LLXMLNode::addChild(LLXMLNodePtr& new_child)
@@ -305,13 +305,13 @@ void LLXMLNode::addChild(LLXMLNodePtr& new_child)
 }
 
 // virtual
-LLXMLNodePtr LLXMLNode::createChild(const char* name, BOOL is_attribute)
+LLXMLNodePtr LLXMLNode::createChild(const char* name, bool is_attribute)
 {
     return createChild(gStringTable.addStringEntry(name), is_attribute);
 }
 
 // virtual
-LLXMLNodePtr LLXMLNode::createChild(LLStringTableEntry* name, BOOL is_attribute)
+LLXMLNodePtr LLXMLNode::createChild(LLStringTableEntry* name, bool is_attribute)
 {
     LLXMLNodePtr ret(new LLXMLNode(name, is_attribute));
     ret->mID.clear();
@@ -320,13 +320,13 @@ LLXMLNodePtr LLXMLNode::createChild(LLStringTableEntry* name, BOOL is_attribute)
     return ret;
 }
 
-BOOL LLXMLNode::deleteChild(LLXMLNode *child)
+bool LLXMLNode::deleteChild(LLXMLNode *child)
 {
     if (removeChild(child))
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 void LLXMLNode::setParent(LLXMLNodePtr& new_parent)
@@ -378,7 +378,7 @@ void XMLCALL StartXMLNode(void *userData,
                           const XML_Char **atts)
 {
     // Create a new node
-    LLXMLNode *new_node_ptr = new LLXMLNode(name, FALSE);
+    LLXMLNode *new_node_ptr = new LLXMLNode(name, false);
 
     LLXMLNodePtr new_node = new_node_ptr;
     new_node->mID.clear();
@@ -483,9 +483,9 @@ void XMLCALL StartXMLNode(void *userData,
 
         // only one attribute child per description
         LLXMLNodePtr attr_node;
-        if (!new_node->getAttribute(attr_name.c_str(), attr_node, FALSE))
+        if (!new_node->getAttribute(attr_name.c_str(), attr_node, false))
         {
-            attr_node = new LLXMLNode(attr_name.c_str(), TRUE);
+            attr_node = new LLXMLNode(attr_name.c_str(), true);
             attr_node->setLineNumber(XML_GetCurrentLineNumber(*new_node_ptr->mParser));
         }
         attr_node->setValue(attr_value);
@@ -511,13 +511,13 @@ void XMLCALL EndXMLNode(void *userData,
     if (LLXMLNode::sStripWhitespaceValues)
     {
         std::string value = node->getValue();
-        BOOL is_empty = TRUE;
+        bool is_empty = true;
         for (std::string::size_type s = 0; s < value.length(); s++)
         {
             char c = value[s];
             if (c != ' ' && c != '\t' && c != '\n')
             {
-                is_empty = FALSE;
+                is_empty = false;
                 break;
             }
         }
@@ -578,7 +578,7 @@ bool LLXMLNode::updateNode(
     if (!node || !update_node)
     {
         LL_WARNS() << "Node invalid" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     //update the node value
@@ -650,7 +650,7 @@ bool LLXMLNode::updateNode(
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 // static
@@ -673,7 +673,7 @@ bool LLXMLNode::parseFile(const std::string& filename, LLXMLNodePtr& node, LLXML
     buffer[nread] = 0;
     fclose(fp);
 
-    bool rv = parseBuffer(buffer, nread, node, defaults_tree);
+    bool rv = parseBuffer(buffer, static_cast<U32>(nread), node, defaults_tree);
     delete [] buffer;
     return rv;
 }
@@ -691,7 +691,7 @@ bool LLXMLNode::parseBuffer(
     XML_SetCharacterDataHandler(my_parser, XMLData);
 
     // Create a root node
-    LLXMLNode *file_node_ptr = new LLXMLNode("XML", FALSE);
+    LLXMLNode *file_node_ptr = new LLXMLNode("XML", false);
     LLXMLNodePtr file_node = file_node_ptr;
 
     file_node->mParser = &my_parser;
@@ -699,7 +699,7 @@ bool LLXMLNode::parseBuffer(
     XML_SetUserData(my_parser, (void *)file_node_ptr);
 
     // Do the parsing
-    if (XML_Parse(my_parser, (const char *)buffer, length, TRUE) != XML_STATUS_OK)
+    if (XML_Parse(my_parser, (const char *)buffer, length, true) != XML_STATUS_OK)
     {
         LL_WARNS() << "Error parsing xml error code: "
                 << XML_ErrorString(XML_GetErrorCode(my_parser))
@@ -739,7 +739,7 @@ bool LLXMLNode::parseStream(
     XML_SetCharacterDataHandler(my_parser, XMLData);
 
     // Create a root node
-    LLXMLNode *file_node_ptr = new LLXMLNode("XML", FALSE);
+    LLXMLNode *file_node_ptr = new LLXMLNode("XML", false);
     LLXMLNodePtr file_node = file_node_ptr;
 
     file_node->mParser = &my_parser;
@@ -787,18 +787,18 @@ bool LLXMLNode::parseStream(
 }
 
 
-BOOL LLXMLNode::isFullyDefault()
+bool LLXMLNode::isFullyDefault()
 {
     if (mDefault.isNull())
     {
-        return FALSE;
+        return false;
     }
-    BOOL has_default_value = (mValue == mDefault->mValue);
-    BOOL has_default_attribute = (mIsAttribute == mDefault->mIsAttribute);
-    BOOL has_default_type = mIsAttribute || (mType == mDefault->mType);
-    BOOL has_default_encoding = mIsAttribute || (mEncoding == mDefault->mEncoding);
-    BOOL has_default_precision = mIsAttribute || (mPrecision == mDefault->mPrecision);
-    BOOL has_default_length = mIsAttribute || (mLength == mDefault->mLength);
+    bool has_default_value = (mValue == mDefault->mValue);
+    bool has_default_attribute = (mIsAttribute == mDefault->mIsAttribute);
+    bool has_default_type = mIsAttribute || (mType == mDefault->mType);
+    bool has_default_encoding = mIsAttribute || (mEncoding == mDefault->mEncoding);
+    bool has_default_precision = mIsAttribute || (mPrecision == mDefault->mPrecision);
+    bool has_default_length = mIsAttribute || (mLength == mDefault->mLength);
 
     if (has_default_value
         && has_default_type
@@ -816,14 +816,14 @@ BOOL LLXMLNode::isFullyDefault()
                 LLXMLNodePtr child = (*children_itr).second;
                 if (!child->isFullyDefault())
                 {
-                    return FALSE;
+                    return false;
                 }
             }
         }
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 // static
@@ -911,10 +911,10 @@ void LLXMLNode::writeToOstream(std::ostream& output_stream, const std::string& i
         return;
     }
 
-    BOOL has_default_type = mDefault.isNull()?FALSE:(mType == mDefault->mType);
-    BOOL has_default_encoding = mDefault.isNull()?FALSE:(mEncoding == mDefault->mEncoding);
-    BOOL has_default_precision = mDefault.isNull()?FALSE:(mPrecision == mDefault->mPrecision);
-    BOOL has_default_length = mDefault.isNull()?FALSE:(mLength == mDefault->mLength);
+    bool has_default_type = mDefault.isNull()?false:(mType == mDefault->mType);
+    bool has_default_encoding = mDefault.isNull()?false:(mEncoding == mDefault->mEncoding);
+    bool has_default_precision = mDefault.isNull()?false:(mPrecision == mDefault->mPrecision);
+    bool has_default_length = mDefault.isNull()?false:(mLength == mDefault->mLength);
 
     // stream the name
     output_stream << indent << "<" << mName->mString << "\n";
@@ -1156,12 +1156,12 @@ void LLXMLNode::scrubToTree(LLXMLNode *tree)
     }
 }
 
-bool LLXMLNode::getChild(const char* name, LLXMLNodePtr& node, BOOL use_default_if_missing)
+bool LLXMLNode::getChild(const char* name, LLXMLNodePtr& node, bool use_default_if_missing)
 {
     return getChild(gStringTable.checkStringEntry(name), node, use_default_if_missing);
 }
 
-bool LLXMLNode::getChild(const LLStringTableEntry* name, LLXMLNodePtr& node, BOOL use_default_if_missing)
+bool LLXMLNode::getChild(const LLStringTableEntry* name, LLXMLNodePtr& node, bool use_default_if_missing)
 {
     if (mChildren.notNull())
     {
@@ -1174,18 +1174,18 @@ bool LLXMLNode::getChild(const LLStringTableEntry* name, LLXMLNodePtr& node, BOO
     }
     if (use_default_if_missing && !mDefault.isNull())
     {
-        return mDefault->getChild(name, node, FALSE);
+        return mDefault->getChild(name, node, false);
     }
     node = NULL;
     return false;
 }
 
-void LLXMLNode::getChildren(const char* name, LLXMLNodeList &children, BOOL use_default_if_missing) const
+void LLXMLNode::getChildren(const char* name, LLXMLNodeList &children, bool use_default_if_missing) const
 {
     getChildren(gStringTable.checkStringEntry(name), children, use_default_if_missing);
 }
 
-void LLXMLNode::getChildren(const LLStringTableEntry* name, LLXMLNodeList &children, BOOL use_default_if_missing) const
+void LLXMLNode::getChildren(const LLStringTableEntry* name, LLXMLNodeList &children, bool use_default_if_missing) const
 {
     if (mChildren.notNull())
     {
@@ -1207,7 +1207,7 @@ void LLXMLNode::getChildren(const LLStringTableEntry* name, LLXMLNodeList &child
     }
     if (children.size() == 0 && use_default_if_missing && !mDefault.isNull())
     {
-        mDefault->getChildren(name, children, FALSE);
+        mDefault->getChildren(name, children, false);
     }
 }
 
@@ -1230,12 +1230,12 @@ void LLXMLNode::getDescendants(const LLStringTableEntry* name, LLXMLNodeList &ch
     }
 }
 
-bool LLXMLNode::getAttribute(const char* name, LLXMLNodePtr& node, BOOL use_default_if_missing)
+bool LLXMLNode::getAttribute(const char* name, LLXMLNodePtr& node, bool use_default_if_missing)
 {
     return getAttribute(gStringTable.checkStringEntry(name), node, use_default_if_missing);
 }
 
-bool LLXMLNode::getAttribute(const LLStringTableEntry* name, LLXMLNodePtr& node, BOOL use_default_if_missing)
+bool LLXMLNode::getAttribute(const LLStringTableEntry* name, LLXMLNodePtr& node, bool use_default_if_missing)
 {
     LLXMLAttribList::const_iterator child_itr = mAttributes.find(name);
     if (child_itr != mAttributes.end())
@@ -1245,7 +1245,7 @@ bool LLXMLNode::getAttribute(const LLStringTableEntry* name, LLXMLNodePtr& node,
     }
     if (use_default_if_missing && !mDefault.isNull())
     {
-        return mDefault->getAttribute(name, node, FALSE);
+        return mDefault->getAttribute(name, node, false);
     }
 
     return false;
@@ -1264,42 +1264,25 @@ bool LLXMLNode::setAttributeString(const char* attr, const std::string& value)
     return false;
 }
 
-BOOL LLXMLNode::hasAttribute(const char* name )
+bool LLXMLNode::hasAttribute(const char* name )
 {
     LLXMLNodePtr node;
     return getAttribute(name, node);
 }
 
-// the structure of these getAttribute_ functions is ugly, but it's because the
-// underlying system is based on BOOL and LLString; if we change
-// so that they're based on more generic mechanisms, these will be
-// simplified.
-bool LLXMLNode::getAttribute_bool(const char* name, bool& value )
-{
-    LLXMLNodePtr node;
-    if (!getAttribute(name, node))
-    {
-        return false;
-    }
-    BOOL temp;
-    bool retval = node->getBoolValue(1, &temp);
-    value = temp;
-    return retval;
-}
-
-BOOL LLXMLNode::getAttributeBOOL(const char* name, BOOL& value )
+bool LLXMLNode::getAttributeBOOL(const char* name, bool& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getBoolValue(1, &value));
 }
 
-BOOL LLXMLNode::getAttributeU8(const char* name, U8& value )
+bool LLXMLNode::getAttributeU8(const char* name, U8& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getByteValue(1, &value));
 }
 
-BOOL LLXMLNode::getAttributeS8(const char* name, S8& value )
+bool LLXMLNode::getAttributeS8(const char* name, S8& value )
 {
     LLXMLNodePtr node;
     S32 val;
@@ -1311,7 +1294,7 @@ BOOL LLXMLNode::getAttributeS8(const char* name, S8& value )
     return true;
 }
 
-BOOL LLXMLNode::getAttributeU16(const char* name, U16& value )
+bool LLXMLNode::getAttributeU16(const char* name, U16& value )
 {
     LLXMLNodePtr node;
     U32 val;
@@ -1323,7 +1306,7 @@ BOOL LLXMLNode::getAttributeU16(const char* name, U16& value )
     return true;
 }
 
-BOOL LLXMLNode::getAttributeS16(const char* name, S16& value )
+bool LLXMLNode::getAttributeS16(const char* name, S16& value )
 {
     LLXMLNodePtr node;
     S32 val;
@@ -1335,73 +1318,73 @@ BOOL LLXMLNode::getAttributeS16(const char* name, S16& value )
     return true;
 }
 
-BOOL LLXMLNode::getAttributeU32(const char* name, U32& value )
+bool LLXMLNode::getAttributeU32(const char* name, U32& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getUnsignedValue(1, &value));
 }
 
-BOOL LLXMLNode::getAttributeS32(const char* name, S32& value )
+bool LLXMLNode::getAttributeS32(const char* name, S32& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getIntValue(1, &value));
 }
 
-BOOL LLXMLNode::getAttributeF32(const char* name, F32& value )
+bool LLXMLNode::getAttributeF32(const char* name, F32& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getFloatValue(1, &value));
 }
 
-BOOL LLXMLNode::getAttributeF64(const char* name, F64& value )
+bool LLXMLNode::getAttributeF64(const char* name, F64& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getDoubleValue(1, &value));
 }
 
-BOOL LLXMLNode::getAttributeColor(const char* name, LLColor4& value )
+bool LLXMLNode::getAttributeColor(const char* name, LLColor4& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getFloatValue(4, value.mV));
 }
 
-BOOL LLXMLNode::getAttributeColor4(const char* name, LLColor4& value )
+bool LLXMLNode::getAttributeColor4(const char* name, LLColor4& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getFloatValue(4, value.mV));
 }
 
-BOOL LLXMLNode::getAttributeColor4U(const char* name, LLColor4U& value )
+bool LLXMLNode::getAttributeColor4U(const char* name, LLColor4U& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getByteValue(4, value.mV));
 }
 
-BOOL LLXMLNode::getAttributeVector3(const char* name, LLVector3& value )
+bool LLXMLNode::getAttributeVector3(const char* name, LLVector3& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getFloatValue(3, value.mV));
 }
 
-BOOL LLXMLNode::getAttributeVector3d(const char* name, LLVector3d& value )
+bool LLXMLNode::getAttributeVector3d(const char* name, LLVector3d& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getDoubleValue(3, value.mdV));
 }
 
-BOOL LLXMLNode::getAttributeQuat(const char* name, LLQuaternion& value )
+bool LLXMLNode::getAttributeQuat(const char* name, LLQuaternion& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getFloatValue(4, value.mQ));
 }
 
-BOOL LLXMLNode::getAttributeUUID(const char* name, LLUUID& value )
+bool LLXMLNode::getAttributeUUID(const char* name, LLUUID& value )
 {
     LLXMLNodePtr node;
     return (getAttribute(name, node) && node->getUUIDValue(1, &value));
 }
 
-BOOL LLXMLNode::getAttributeString(const char* name, std::string& value )
+bool LLXMLNode::getAttributeString(const char* name, std::string& value )
 {
     LLXMLNodePtr node;
     if (!getAttribute(name, node))
@@ -1438,10 +1421,10 @@ const char *LLXMLNode::skipNonWhitespace(const char *str)
 }
 
 /*static */
-const char *LLXMLNode::parseInteger(const char *str, U64 *dest, BOOL *is_negative, U32 precision, Encoding encoding)
+const char *LLXMLNode::parseInteger(const char *str, U64 *dest, bool *is_negative, U32 precision, Encoding encoding)
 {
     *dest = 0;
-    *is_negative = FALSE;
+    *is_negative = false;
 
     str = skipWhitespace(str);
 
@@ -1455,7 +1438,7 @@ const char *LLXMLNode::parseInteger(const char *str, U64 *dest, BOOL *is_negativ
         }
         if (str[0] == '-')
         {
-            *is_negative = TRUE;
+            *is_negative = true;
             ++str;
         }
 
@@ -1656,7 +1639,7 @@ const char *LLXMLNode::parseFloat(const char *str, F64 *dest, U32 precision, Enc
             // Scientific notation!
             ++str;
             U64 exp;
-            BOOL is_negative;
+            bool is_negative;
             str = parseInteger(str, &exp, &is_negative, 64, ENCODING_DECIMAL);
             if (str == NULL)
             {
@@ -1680,7 +1663,7 @@ const char *LLXMLNode::parseFloat(const char *str, F64 *dest, U32 precision, Enc
     if (encoding == ENCODING_HEX)
     {
         U64 bytes_dest;
-        BOOL is_negative;
+        bool is_negative;
         str = parseInteger(str, (U64 *)&bytes_dest, &is_negative, precision, ENCODING_HEX);
         // Upcast to F64
         switch (precision)
@@ -1703,7 +1686,7 @@ const char *LLXMLNode::parseFloat(const char *str, F64 *dest, U32 precision, Enc
     return NULL;
 }
 
-U32 LLXMLNode::getBoolValue(U32 expected_length, BOOL *array)
+U32 LLXMLNode::getBoolValue(U32 expected_length, bool *array)
 {
     llassert(array);
 
@@ -1723,11 +1706,11 @@ U32 LLXMLNode::getBoolValue(U32 expected_length, BOOL *array)
         LLStringUtil::toLower(str_array[i]);
         if (str_array[i] == "false")
         {
-            array[ret_length++] = FALSE;
+            array[ret_length++] = false;
         }
         else if (str_array[i] == "true")
         {
-            array[ret_length++] = TRUE;
+            array[ret_length++] = true;
         }
     }
 
@@ -1773,7 +1756,7 @@ U32 LLXMLNode::getByteValue(U32 expected_length, U8 *array, Encoding encoding)
     for (i=0; i<expected_length; ++i)
     {
         U64 value;
-        BOOL is_negative;
+        bool is_negative;
         value_string = parseInteger(value_string, &value, &is_negative, 8, encoding);
         if (value_string == NULL)
         {
@@ -1825,7 +1808,7 @@ U32 LLXMLNode::getIntValue(U32 expected_length, S32 *array, Encoding encoding)
     for (i=0; i<expected_length; ++i)
     {
         U64 value;
-        BOOL is_negative;
+        bool is_negative;
         value_string = parseInteger(value_string, &value, &is_negative, 32, encoding);
         if (value_string == NULL)
         {
@@ -1879,7 +1862,7 @@ U32 LLXMLNode::getUnsignedValue(U32 expected_length, U32 *array, Encoding encodi
     for (i=0; i<expected_length; ++i)
     {
         U64 value;
-        BOOL is_negative;
+        bool is_negative;
         value_string = parseInteger(value_string, &value, &is_negative, 32, encoding);
         if (value_string == NULL)
         {
@@ -1933,7 +1916,7 @@ U32 LLXMLNode::getLongValue(U32 expected_length, U64 *array, Encoding encoding)
     for (i=0; i<expected_length; ++i)
     {
         U64 value;
-        BOOL is_negative;
+        bool is_negative;
         value_string = parseInteger(value_string, &value, &is_negative, 64, encoding);
         if (value_string == NULL)
         {
@@ -2188,7 +2171,7 @@ U32 LLXMLNode::getNodeRefValue(U32 expected_length, LLXMLNode **array)
     return num_returned_refs;
 }
 
-void LLXMLNode::setBoolValue(U32 length, const BOOL *array)
+void LLXMLNode::setBoolValue(U32 length, const bool *array)
 {
     if (length == 0) return;
 
@@ -2617,7 +2600,7 @@ void LLXMLNode::findDefault(LLXMLNode *defaults_list)
     mDefault = NULL;
 }
 
-BOOL LLXMLNode::deleteChildren(const std::string& name)
+bool LLXMLNode::deleteChildren(const std::string& name)
 {
     U32 removed_count = 0;
     LLXMLNodeList node_list;
@@ -2636,10 +2619,10 @@ BOOL LLXMLNode::deleteChildren(const std::string& name)
             }
         }
     }
-    return removed_count > 0 ? TRUE : FALSE;
+    return removed_count > 0;
 }
 
-BOOL LLXMLNode::deleteChildren(LLStringTableEntry* name)
+bool LLXMLNode::deleteChildren(LLStringTableEntry* name)
 {
     U32 removed_count = 0;
     LLXMLNodeList node_list;
@@ -2658,7 +2641,7 @@ BOOL LLXMLNode::deleteChildren(LLStringTableEntry* name)
             }
         }
     }
-    return removed_count > 0 ? TRUE : FALSE;
+    return removed_count > 0;
 }
 
 void LLXMLNode::setAttributes(LLXMLNode::ValueType type, U32 precision, LLXMLNode::Encoding encoding, U32 length)
@@ -2701,7 +2684,7 @@ U32 LLXMLNode::getChildCount() const
 {
     if (mChildren.notNull())
     {
-        return mChildren->map.size();
+        return static_cast<U32>(mChildren->map.size());
     }
     return 0;
 }
@@ -2720,7 +2703,7 @@ LLXMLNode *get_rand_node(LLXMLNode *node)
 {
     if (node->mChildren.notNull())
     {
-        U32 num_children = node->mChildren->map.size();
+        U32 num_children = static_cast<U32>(node->mChildren->map.size());
         if (get_rand(2) == 0)
         {
             while (true)
@@ -2781,7 +2764,7 @@ void LLXMLNode::createUnitTest(S32 max_num_children)
             child_name.append(1, c);
         }
 
-        LLXMLNode *new_child = createChild(child_name.c_str(), FALSE);
+        LLXMLNode *new_child = createChild(child_name.c_str(), false);
 
         // Random ID
         std::string child_id;
@@ -2808,7 +2791,7 @@ void LLXMLNode::createUnitTest(S32 max_num_children)
             break;
         case 1: // TYPE_BOOLEAN
             {
-                BOOL random_bool_values[30];
+                bool random_bool_values[30];
                 for (U32 value=0; value<array_size; ++value)
                 {
                     random_bool_values[value] = get_rand(2);
@@ -2916,20 +2899,20 @@ void LLXMLNode::createUnitTest(S32 max_num_children)
         }
     }
 
-    createChild("integer_checksum", TRUE)->setUnsignedValue(1, &integer_checksum, LLXMLNode::ENCODING_HEX);
-    createChild("long_checksum", TRUE)->setLongValue(1, &long_checksum, LLXMLNode::ENCODING_HEX);
-    createChild("bool_true_count", TRUE)->setUnsignedValue(1, &bool_true_count, LLXMLNode::ENCODING_HEX);
-    createChild("uuid_checksum", TRUE)->setUUIDValue(1, &uuid_checksum);
-    createChild("noderef_checksum", TRUE)->setUnsignedValue(1, &noderef_checksum, LLXMLNode::ENCODING_HEX);
-    createChild("float_checksum", TRUE)->setUnsignedValue(1, &float_checksum, LLXMLNode::ENCODING_HEX);
+    createChild("integer_checksum", true)->setUnsignedValue(1, &integer_checksum, LLXMLNode::ENCODING_HEX);
+    createChild("long_checksum", true)->setLongValue(1, &long_checksum, LLXMLNode::ENCODING_HEX);
+    createChild("bool_true_count", true)->setUnsignedValue(1, &bool_true_count, LLXMLNode::ENCODING_HEX);
+    createChild("uuid_checksum", true)->setUUIDValue(1, &uuid_checksum);
+    createChild("noderef_checksum", true)->setUnsignedValue(1, &noderef_checksum, LLXMLNode::ENCODING_HEX);
+    createChild("float_checksum", true)->setUnsignedValue(1, &float_checksum, LLXMLNode::ENCODING_HEX);
 }
 
-BOOL LLXMLNode::performUnitTest(std::string &error_buffer)
+bool LLXMLNode::performUnitTest(std::string &error_buffer)
 {
     if (mChildren.isNull())
     {
         error_buffer.append(llformat("ERROR Node %s: No children found.\n", mName->mString));
-        return FALSE;
+        return false;
     }
 
     // Checksums
@@ -2953,14 +2936,14 @@ BOOL LLXMLNode::performUnitTest(std::string &error_buffer)
             if (!node->performUnitTest(error_buffer))
             {
                 error_buffer.append(llformat("Child test failed for %s.\n", mName->mString));
-                //return FALSE;
+                //return false;
             }
             continue;
         }
         if (node->mLength < 1 || node->mLength > 30)
         {
             error_buffer.append(llformat("ERROR Node %s: Invalid array length %d, child %s.\n", mName->mString, node->mLength, node->mName->mString));
-            return FALSE;
+            return false;
         }
         switch (node->mType)
         {
@@ -2969,11 +2952,11 @@ BOOL LLXMLNode::performUnitTest(std::string &error_buffer)
             break;
         case TYPE_BOOLEAN:
             {
-                BOOL bool_array[30];
+                bool bool_array[30];
                 if (node->getBoolValue(node->mLength, bool_array) < node->mLength)
                 {
                     error_buffer.append(llformat("ERROR Node %s: Could not read boolean array, child %s.\n", mName->mString, node->mName->mString));
-                    return FALSE;
+                    return false;
                 }
                 for (U32 pos=0; pos<(U32)node->mLength; ++pos)
                 {
@@ -2992,7 +2975,7 @@ BOOL LLXMLNode::performUnitTest(std::string &error_buffer)
                     if (node->getUnsignedValue(node->mLength, integer_array, node->mEncoding) < node->mLength)
                     {
                         error_buffer.append(llformat("ERROR Node %s: Could not read integer array, child %s.\n", mName->mString, node->mName->mString));
-                        return FALSE;
+                        return false;
                     }
                     for (U32 pos=0; pos<(U32)node->mLength; ++pos)
                     {
@@ -3005,7 +2988,7 @@ BOOL LLXMLNode::performUnitTest(std::string &error_buffer)
                     if (node->getLongValue(node->mLength, integer_array, node->mEncoding) < node->mLength)
                     {
                         error_buffer.append(llformat("ERROR Node %s: Could not read long integer array, child %s.\n", mName->mString, node->mName->mString));
-                        return FALSE;
+                        return false;
                     }
                     for (U32 pos=0; pos<(U32)node->mLength; ++pos)
                     {
@@ -3022,7 +3005,7 @@ BOOL LLXMLNode::performUnitTest(std::string &error_buffer)
                     if (node->getFloatValue(node->mLength, float_array, node->mEncoding) < node->mLength)
                     {
                         error_buffer.append(llformat("ERROR Node %s: Could not read float array, child %s.\n", mName->mString, node->mName->mString));
-                        return FALSE;
+                        return false;
                     }
                     for (U32 pos=0; pos<(U32)node->mLength; ++pos)
                     {
@@ -3036,7 +3019,7 @@ BOOL LLXMLNode::performUnitTest(std::string &error_buffer)
                     if (node->getDoubleValue(node->mLength, float_array, node->mEncoding) < node->mLength)
                     {
                         error_buffer.append(llformat("ERROR Node %s: Could not read float array, child %s.\n", mName->mString, node->mName->mString));
-                        return FALSE;
+                        return false;
                     }
                     for (U32 pos=0; pos<(U32)node->mLength; ++pos)
                     {
@@ -3054,7 +3037,7 @@ BOOL LLXMLNode::performUnitTest(std::string &error_buffer)
                 if (node->getUUIDValue(node->mLength, uuid_array) < node->mLength)
                 {
                     error_buffer.append(llformat("ERROR Node %s: Could not read uuid array, child %s.\n", mName->mString, node->mName->mString));
-                    return FALSE;
+                    return false;
                 }
                 for (U32 pos=0; pos<(U32)node->mLength; ++pos)
                 {
@@ -3071,7 +3054,7 @@ BOOL LLXMLNode::performUnitTest(std::string &error_buffer)
                 if (node->getNodeRefValue(node->mLength, node_array) < node->mLength)
                 {
                     error_buffer.append(llformat("ERROR Node %s: Could not read node ref array, child %s.\n", mName->mString, node->mName->mString));
-                    return FALSE;
+                    return false;
                 }
                 for (U32 pos=0; pos<node->mLength; ++pos)
                 {
@@ -3092,97 +3075,97 @@ BOOL LLXMLNode::performUnitTest(std::string &error_buffer)
     // Compare checksums
     {
         U32 node_integer_checksum = 0;
-        if (!getAttribute("integer_checksum", checksum_node, FALSE) ||
+        if (!getAttribute("integer_checksum", checksum_node, false) ||
             checksum_node->getUnsignedValue(1, &node_integer_checksum, ENCODING_HEX) != 1)
         {
             error_buffer.append(llformat("ERROR Node %s: Integer checksum missing.\n", mName->mString));
-            return FALSE;
+            return false;
         }
         if (node_integer_checksum != integer_checksum)
         {
             error_buffer.append(llformat("ERROR Node %s: Integer checksum mismatch: read %X / calc %X.\n", mName->mString, node_integer_checksum, integer_checksum));
-            return FALSE;
+            return false;
         }
     }
 
     {
         U64 node_long_checksum = 0;
-        if (!getAttribute("long_checksum", checksum_node, FALSE) ||
+        if (!getAttribute("long_checksum", checksum_node, false) ||
             checksum_node->getLongValue(1, &node_long_checksum, ENCODING_HEX) != 1)
         {
             error_buffer.append(llformat("ERROR Node %s: Long Integer checksum missing.\n", mName->mString));
-            return FALSE;
+            return false;
         }
         if (node_long_checksum != long_checksum)
         {
             U32 *pp1 = (U32 *)&node_long_checksum;
             U32 *pp2 = (U32 *)&long_checksum;
             error_buffer.append(llformat("ERROR Node %s: Long Integer checksum mismatch: read %08X%08X / calc %08X%08X.\n", mName->mString, pp1[1], pp1[0], pp2[1], pp2[0]));
-            return FALSE;
+            return false;
         }
     }
 
     {
         U32 node_bool_true_count = 0;
-        if (!getAttribute("bool_true_count", checksum_node, FALSE) ||
+        if (!getAttribute("bool_true_count", checksum_node, false) ||
             checksum_node->getUnsignedValue(1, &node_bool_true_count, ENCODING_HEX) != 1)
         {
             error_buffer.append(llformat("ERROR Node %s: Boolean checksum missing.\n", mName->mString));
-            return FALSE;
+            return false;
         }
         if (node_bool_true_count != bool_true_count)
         {
             error_buffer.append(llformat("ERROR Node %s: Boolean checksum mismatch: read %X / calc %X.\n", mName->mString, node_bool_true_count, bool_true_count));
-            return FALSE;
+            return false;
         }
     }
 
     {
         LLUUID node_uuid_checksum;
-        if (!getAttribute("uuid_checksum", checksum_node, FALSE) ||
+        if (!getAttribute("uuid_checksum", checksum_node, false) ||
             checksum_node->getUUIDValue(1, &node_uuid_checksum) != 1)
         {
             error_buffer.append(llformat("ERROR Node %s: UUID checksum missing.\n", mName->mString));
-            return FALSE;
+            return false;
         }
         if (node_uuid_checksum != uuid_checksum)
         {
             error_buffer.append(llformat("ERROR Node %s: UUID checksum mismatch: read %s / calc %s.\n", mName->mString, node_uuid_checksum.asString().c_str(), uuid_checksum.asString().c_str()));
-            return FALSE;
+            return false;
         }
     }
 
     {
         U32 node_noderef_checksum = 0;
-        if (!getAttribute("noderef_checksum", checksum_node, FALSE) ||
+        if (!getAttribute("noderef_checksum", checksum_node, false) ||
             checksum_node->getUnsignedValue(1, &node_noderef_checksum, ENCODING_HEX) != 1)
         {
             error_buffer.append(llformat("ERROR Node %s: Node Ref checksum missing.\n", mName->mString));
-            return FALSE;
+            return false;
         }
         if (node_noderef_checksum != noderef_checksum)
         {
             error_buffer.append(llformat("ERROR Node %s: Node Ref checksum mismatch: read %X / calc %X.\n", mName->mString, node_noderef_checksum, noderef_checksum));
-            return FALSE;
+            return false;
         }
     }
 
     {
         U32 node_float_checksum = 0;
-        if (!getAttribute("float_checksum", checksum_node, FALSE) ||
+        if (!getAttribute("float_checksum", checksum_node, false) ||
             checksum_node->getUnsignedValue(1, &node_float_checksum, ENCODING_HEX) != 1)
         {
             error_buffer.append(llformat("ERROR Node %s: Float checksum missing.\n", mName->mString));
-            return FALSE;
+            return false;
         }
         if (node_float_checksum != float_checksum)
         {
             error_buffer.append(llformat("ERROR Node %s: Float checksum mismatch: read %X / calc %X.\n", mName->mString, node_float_checksum, float_checksum));
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 LLXMLNodePtr LLXMLNode::getFirstChild() const
diff --git a/indra/llxml/llxmlnode.h b/indra/llxml/llxmlnode.h
index 62ab51fa8c..b8e29bbfef 100644
--- a/indra/llxml/llxmlnode.h
+++ b/indra/llxml/llxmlnode.h
@@ -57,9 +57,9 @@ struct CompareAttributes
     bool operator()(const LLStringTableEntry* const lhs, const LLStringTableEntry* const rhs) const
     {
         if (lhs == NULL)
-            return TRUE;
+            return true;
         if (rhs == NULL)
-            return FALSE;
+            return true;
 
         return strcmp(lhs->mString, rhs->mString) < 0;
     }
@@ -118,14 +118,14 @@ protected:
 
 public:
     LLXMLNode();
-    LLXMLNode(const char* name, BOOL is_attribute);
-    LLXMLNode(LLStringTableEntry* name, BOOL is_attribute);
+    LLXMLNode(const char* name, bool is_attribute);
+    LLXMLNode(LLStringTableEntry* name, bool is_attribute);
     LLXMLNode(const LLXMLNode& rhs);
     LLXMLNodePtr deepCopy();
 
-    BOOL isNull();
+    bool isNull();
 
-    BOOL deleteChild(LLXMLNode* child);
+    bool deleteChild(LLXMLNode* child);
     void addChild(LLXMLNodePtr& new_child);
     void setParent(LLXMLNodePtr& new_parent); // reparent if necessary
 
@@ -165,12 +165,12 @@ public:
     void findID(const std::string& id, LLXMLNodeList &results);
 
 
-    virtual LLXMLNodePtr createChild(const char* name, BOOL is_attribute);
-    virtual LLXMLNodePtr createChild(LLStringTableEntry* name, BOOL is_attribute);
+    virtual LLXMLNodePtr createChild(const char* name, bool is_attribute);
+    virtual LLXMLNodePtr createChild(LLStringTableEntry* name, bool is_attribute);
 
 
     // Getters
-    U32 getBoolValue(U32 expected_length, BOOL *array);
+    U32 getBoolValue(U32 expected_length, bool *array);
     U32 getByteValue(U32 expected_length, U8 *array, Encoding encoding = ENCODING_DEFAULT);
     U32 getIntValue(U32 expected_length, S32 *array, Encoding encoding = ENCODING_DEFAULT);
     U32 getUnsignedValue(U32 expected_length, U32 *array, Encoding encoding = ENCODING_DEFAULT);
@@ -181,29 +181,25 @@ public:
     U32 getUUIDValue(U32 expected_length, LLUUID *array);
     U32 getNodeRefValue(U32 expected_length, LLXMLNode **array);
 
-    BOOL hasAttribute(const char* name );
-
-        // these are designed to be more generic versions of the functions
-    // rather than relying on LL-types
-    bool getAttribute_bool(const char* name, bool& value );
-
-    BOOL getAttributeBOOL(const char* name, BOOL& value );
-    BOOL getAttributeU8(const char* name, U8& value );
-    BOOL getAttributeS8(const char* name, S8& value );
-    BOOL getAttributeU16(const char* name, U16& value );
-    BOOL getAttributeS16(const char* name, S16& value );
-    BOOL getAttributeU32(const char* name, U32& value );
-    BOOL getAttributeS32(const char* name, S32& value );
-    BOOL getAttributeF32(const char* name, F32& value );
-    BOOL getAttributeF64(const char* name, F64& value );
-    BOOL getAttributeColor(const char* name, LLColor4& value );
-    BOOL getAttributeColor4(const char* name, LLColor4& value );
-    BOOL getAttributeColor4U(const char* name, LLColor4U& value );
-    BOOL getAttributeVector3(const char* name, LLVector3& value );
-    BOOL getAttributeVector3d(const char* name, LLVector3d& value );
-    BOOL getAttributeQuat(const char* name, LLQuaternion& value );
-    BOOL getAttributeUUID(const char* name, LLUUID& value );
-    BOOL getAttributeString(const char* name, std::string& value );
+    bool hasAttribute(const char* name );
+
+    bool getAttributeBOOL(const char* name, bool& value );
+    bool getAttributeU8(const char* name, U8& value );
+    bool getAttributeS8(const char* name, S8& value );
+    bool getAttributeU16(const char* name, U16& value );
+    bool getAttributeS16(const char* name, S16& value );
+    bool getAttributeU32(const char* name, U32& value );
+    bool getAttributeS32(const char* name, S32& value );
+    bool getAttributeF32(const char* name, F32& value );
+    bool getAttributeF64(const char* name, F64& value );
+    bool getAttributeColor(const char* name, LLColor4& value );
+    bool getAttributeColor4(const char* name, LLColor4& value );
+    bool getAttributeColor4U(const char* name, LLColor4U& value );
+    bool getAttributeVector3(const char* name, LLVector3& value );
+    bool getAttributeVector3d(const char* name, LLVector3d& value );
+    bool getAttributeQuat(const char* name, LLQuaternion& value );
+    bool getAttributeUUID(const char* name, LLUUID& value );
+    bool getAttributeString(const char* name, std::string& value );
 
     const ValueType& getType() const { return mType; }
     U32 getLength() const { return mLength; }
@@ -212,23 +208,23 @@ public:
     std::string getSanitizedValue() const;
     std::string getTextContents() const;
     const LLStringTableEntry* getName() const { return mName; }
-    BOOL hasName(const char* name) const { return mName == gStringTable.checkStringEntry(name); }
-    BOOL hasName(const std::string& name) const { return mName == gStringTable.checkStringEntry(name.c_str()); }
+    bool hasName(const char* name) const { return mName == gStringTable.checkStringEntry(name); }
+    bool hasName(const std::string& name) const { return mName == gStringTable.checkStringEntry(name.c_str()); }
     const std::string& getID() const { return mID; }
 
     U32 getChildCount() const;
     // getChild returns a Null LLXMLNode (not a NULL pointer) if there is no such child.
     // This child has no value so any getTYPEValue() calls on it will return 0.
-    bool getChild(const char* name, LLXMLNodePtr& node, BOOL use_default_if_missing = TRUE);
-    bool getChild(const LLStringTableEntry* name, LLXMLNodePtr& node, BOOL use_default_if_missing = TRUE);
-    void getChildren(const char* name, LLXMLNodeList &children, BOOL use_default_if_missing = TRUE) const;
-    void getChildren(const LLStringTableEntry* name, LLXMLNodeList &children, BOOL use_default_if_missing = TRUE) const;
+    bool getChild(const char* name, LLXMLNodePtr& node, bool use_default_if_missing = true);
+    bool getChild(const LLStringTableEntry* name, LLXMLNodePtr& node, bool use_default_if_missing = true);
+    void getChildren(const char* name, LLXMLNodeList &children, bool use_default_if_missing = true) const;
+    void getChildren(const LLStringTableEntry* name, LLXMLNodeList &children, bool use_default_if_missing = true) const;
 
     // recursively finds all children at any level matching name
     void getDescendants(const LLStringTableEntry* name, LLXMLNodeList &children) const;
 
-    bool getAttribute(const char* name, LLXMLNodePtr& node, BOOL use_default_if_missing = TRUE);
-    bool getAttribute(const LLStringTableEntry* name, LLXMLNodePtr& node, BOOL use_default_if_missing = TRUE);
+    bool getAttribute(const char* name, LLXMLNodePtr& node, bool use_default_if_missing = true);
+    bool getAttribute(const LLStringTableEntry* name, LLXMLNodePtr& node, bool use_default_if_missing = true);
 
     S32 getLineNumber();
 
@@ -242,7 +238,7 @@ public:
 
     bool setAttributeString(const char* attr, const std::string& value);
 
-    void setBoolValue(const BOOL value) { setBoolValue(1, &value); }
+    void setBoolValue(const bool value) { setBoolValue(1, &value); }
     void setByteValue(const U8 value, Encoding encoding = ENCODING_DEFAULT) { setByteValue(1, &value, encoding); }
     void setIntValue(const S32 value, Encoding encoding = ENCODING_DEFAULT) { setIntValue(1, &value, encoding); }
     void setUnsignedValue(const U32 value, Encoding encoding = ENCODING_DEFAULT) { setUnsignedValue(1, &value, encoding); }
@@ -253,7 +249,7 @@ public:
     void setUUIDValue(const LLUUID value) { setUUIDValue(1, &value); }
     void setNodeRefValue(const LLXMLNode *value) { setNodeRefValue(1, &value); }
 
-    void setBoolValue(U32 length, const BOOL *array);
+    void setBoolValue(U32 length, const bool *array);
     void setByteValue(U32 length, const U8 *array, Encoding encoding = ENCODING_DEFAULT);
     void setIntValue(U32 length, const S32 *array, Encoding encoding = ENCODING_DEFAULT);
     void setUnsignedValue(U32 length, const U32* array, Encoding encoding = ENCODING_DEFAULT);
@@ -283,24 +279,24 @@ public:
     // Delete any child nodes that aren't among the tree's children, recursive
     void scrubToTree(LLXMLNode *tree);
 
-    BOOL deleteChildren(const std::string& name);
-    BOOL deleteChildren(LLStringTableEntry* name);
+    bool deleteChildren(const std::string& name);
+    bool deleteChildren(LLStringTableEntry* name);
     void setAttributes(ValueType type, U32 precision, Encoding encoding, U32 length);
 //  void appendValue(const std::string& value); // Unused
 
     // Unit Testing
     void createUnitTest(S32 max_num_children);
-    BOOL performUnitTest(std::string &error_buffer);
+    bool performUnitTest(std::string &error_buffer);
 
 protected:
-    BOOL removeChild(LLXMLNode* child);
+    bool removeChild(LLXMLNode* child);
 
 public:
     std::string mID;                // The ID attribute of this node
 
     XML_Parser *mParser;        // Temporary pointer while loading
 
-    BOOL mIsAttribute;          // Flag is only used for output formatting
+    bool mIsAttribute;          // Flag is only used for output formatting
     U32 mVersionMajor;          // Version of this tag to use
     U32 mVersionMinor;
     U32 mLength;                // If the length is nonzero, then only return arrays of this length
@@ -315,8 +311,8 @@ public:
     LLXMLNodePtr mPrev;             // Double-linked list previous node
     LLXMLNodePtr mNext;             // Double-linked list next node
 
-    static BOOL sStripEscapedStrings;
-    static BOOL sStripWhitespaceValues;
+    static bool sStripEscapedStrings;
+    static bool sStripWhitespaceValues;
 
 protected:
     LLStringTableEntry *mName;      // The name of this node
@@ -330,10 +326,10 @@ protected:
 
     static const char *skipWhitespace(const char *str);
     static const char *skipNonWhitespace(const char *str);
-    static const char *parseInteger(const char *str, U64 *dest, BOOL *is_negative, U32 precision, Encoding encoding);
+    static const char *parseInteger(const char *str, U64 *dest, bool *is_negative, U32 precision, Encoding encoding);
     static const char *parseFloat(const char *str, F64 *dest, U32 precision, Encoding encoding);
 
-    BOOL isFullyDefault();
+    bool isFullyDefault();
 };
 
 #endif // LL_LLXMLNODE
diff --git a/indra/llxml/llxmlparser.cpp b/indra/llxml/llxmlparser.cpp
index ecd75bd410..e2c7d17e2a 100644
--- a/indra/llxml/llxmlparser.cpp
+++ b/indra/llxml/llxmlparser.cpp
@@ -66,17 +66,17 @@ LLXmlParser::~LLXmlParser()
 }
 
 
-BOOL LLXmlParser::parseFile(const std::string &path)
+bool LLXmlParser::parseFile(const std::string &path)
 {
     llassert( !mDepth );
 
-    BOOL success = TRUE;
+    bool success = true;
 
     LLFILE* file = LLFile::fopen(path, "rb");       /* Flawfinder: ignore */
     if( !file )
     {
         mAuxErrorString = llformat( "Couldn't open file %s", path.c_str());
-        success = FALSE;
+        success = false;
     }
     else
     {
@@ -90,7 +90,7 @@ BOOL LLXmlParser::parseFile(const std::string &path)
         if( !buffer )
         {
             mAuxErrorString = llformat( "Unable to allocate XML buffer while reading file %s", path.c_str() );
-            success = FALSE;
+            success = false;
             goto exit_label;
         }
 
@@ -98,14 +98,14 @@ BOOL LLXmlParser::parseFile(const std::string &path)
         if( bytes_read <= 0 )
         {
             mAuxErrorString = llformat( "Error while reading file  %s", path.c_str() );
-            success = FALSE;
+            success = false;
             goto exit_label;
         }
 
-        if( !XML_ParseBuffer(mParser, bytes_read, TRUE ) )
+        if( !XML_ParseBuffer(mParser, bytes_read, true ) )
         {
             mAuxErrorString = llformat( "Error while parsing file  %s", path.c_str() );
-            success = FALSE;
+            success = false;
         }
 
 exit_label:
diff --git a/indra/llxml/llxmlparser.h b/indra/llxml/llxmlparser.h
index 3a8a927350..0f64def6df 100644
--- a/indra/llxml/llxmlparser.h
+++ b/indra/llxml/llxmlparser.h
@@ -43,7 +43,7 @@ public:
     virtual ~LLXmlParser();
 
     // Parses entire file
-    BOOL parseFile(const std::string &path);
+    bool parseFile(const std::string &path);
 
     //  Parses some input. Returns 0 if a fatal error is detected.
     //  The last call must have isFinal true;
diff --git a/indra/llxml/llxmltree.cpp b/indra/llxml/llxmltree.cpp
index cd41aa6f2d..d66544d0f8 100644
--- a/indra/llxml/llxmltree.cpp
+++ b/indra/llxml/llxmltree.cpp
@@ -61,13 +61,13 @@ void LLXmlTree::cleanup()
 }
 
 
-BOOL LLXmlTree::parseFile(const std::string &path, BOOL keep_contents)
+bool LLXmlTree::parseFile(const std::string &path, bool keep_contents)
 {
     delete mRoot;
     mRoot = NULL;
 
     LLXmlTreeParser parser(this);
-    BOOL success = parser.parseFile( path, &mRoot, keep_contents );
+    bool success = parser.parseFile( path, &mRoot, keep_contents );
     if( !success )
     {
         S32 line_number = parser.getCurrentLineNumber();
@@ -138,16 +138,16 @@ void LLXmlTreeNode::dump( const std::string& prefix )
     LL_CONT << LL_ENDL;
 }
 
-BOOL LLXmlTreeNode::hasAttribute(const std::string& name)
+bool LLXmlTreeNode::hasAttribute(const std::string& name)
 {
-    LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
+    LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString(name);
     attribute_map_t::iterator iter = mAttributes.find(canonical_name);
-    return (iter == mAttributes.end()) ? false : true;
+    return iter != mAttributes.end();
 }
 
 void LLXmlTreeNode::addAttribute(const std::string& name, const std::string& value)
 {
-    LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
+    LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString(name);
     const std::string *newstr = new std::string(value);
     mAttributes[canonical_name] = newstr; // insert + copy
 }
@@ -202,214 +202,214 @@ void LLXmlTreeNode::addChild(LLXmlTreeNode* child)
 
 // These functions assume that name is already in mAttritrubteKeys
 
-BOOL LLXmlTreeNode::getFastAttributeBOOL(LLStdStringHandle canonical_name, BOOL& value)
+bool LLXmlTreeNode::getFastAttributeBOOL(LLStdStringHandle canonical_name, bool& value)
 {
     const std::string *s = getAttribute( canonical_name );
     return s && LLStringUtil::convertToBOOL( *s, value );
 }
 
-BOOL LLXmlTreeNode::getFastAttributeU8(LLStdStringHandle canonical_name, U8& value)
+bool LLXmlTreeNode::getFastAttributeU8(LLStdStringHandle canonical_name, U8& value)
 {
     const std::string *s = getAttribute( canonical_name );
     return s && LLStringUtil::convertToU8( *s, value );
 }
 
-BOOL LLXmlTreeNode::getFastAttributeS8(LLStdStringHandle canonical_name, S8& value)
+bool LLXmlTreeNode::getFastAttributeS8(LLStdStringHandle canonical_name, S8& value)
 {
     const std::string *s = getAttribute( canonical_name );
     return s && LLStringUtil::convertToS8( *s, value );
 }
 
-BOOL LLXmlTreeNode::getFastAttributeS16(LLStdStringHandle canonical_name, S16& value)
+bool LLXmlTreeNode::getFastAttributeS16(LLStdStringHandle canonical_name, S16& value)
 {
     const std::string *s = getAttribute( canonical_name );
     return s && LLStringUtil::convertToS16( *s, value );
 }
 
-BOOL LLXmlTreeNode::getFastAttributeU16(LLStdStringHandle canonical_name, U16& value)
+bool LLXmlTreeNode::getFastAttributeU16(LLStdStringHandle canonical_name, U16& value)
 {
     const std::string *s = getAttribute( canonical_name );
     return s && LLStringUtil::convertToU16( *s, value );
 }
 
-BOOL LLXmlTreeNode::getFastAttributeU32(LLStdStringHandle canonical_name, U32& value)
+bool LLXmlTreeNode::getFastAttributeU32(LLStdStringHandle canonical_name, U32& value)
 {
     const std::string *s = getAttribute( canonical_name );
     return s && LLStringUtil::convertToU32( *s, value );
 }
 
-BOOL LLXmlTreeNode::getFastAttributeS32(LLStdStringHandle canonical_name, S32& value)
+bool LLXmlTreeNode::getFastAttributeS32(LLStdStringHandle canonical_name, S32& value)
 {
     const std::string *s = getAttribute( canonical_name );
     return s && LLStringUtil::convertToS32( *s, value );
 }
 
-BOOL LLXmlTreeNode::getFastAttributeF32(LLStdStringHandle canonical_name, F32& value)
+bool LLXmlTreeNode::getFastAttributeF32(LLStdStringHandle canonical_name, F32& value)
 {
     const std::string *s = getAttribute( canonical_name );
     return s && LLStringUtil::convertToF32( *s, value );
 }
 
-BOOL LLXmlTreeNode::getFastAttributeF64(LLStdStringHandle canonical_name, F64& value)
+bool LLXmlTreeNode::getFastAttributeF64(LLStdStringHandle canonical_name, F64& value)
 {
     const std::string *s = getAttribute( canonical_name );
     return s && LLStringUtil::convertToF64( *s, value );
 }
 
-BOOL LLXmlTreeNode::getFastAttributeColor(LLStdStringHandle canonical_name, LLColor4& value)
+bool LLXmlTreeNode::getFastAttributeColor(LLStdStringHandle canonical_name, LLColor4& value)
 {
     const std::string *s = getAttribute( canonical_name );
-    return s ? LLColor4::parseColor(*s, &value) : FALSE;
+    return s ? LLColor4::parseColor(*s, &value) : false;
 }
 
-BOOL LLXmlTreeNode::getFastAttributeColor4(LLStdStringHandle canonical_name, LLColor4& value)
+bool LLXmlTreeNode::getFastAttributeColor4(LLStdStringHandle canonical_name, LLColor4& value)
 {
     const std::string *s = getAttribute( canonical_name );
-    return s ? LLColor4::parseColor4(*s, &value) : FALSE;
+    return s ? LLColor4::parseColor4(*s, &value) : false;
 }
 
-BOOL LLXmlTreeNode::getFastAttributeColor4U(LLStdStringHandle canonical_name, LLColor4U& value)
+bool LLXmlTreeNode::getFastAttributeColor4U(LLStdStringHandle canonical_name, LLColor4U& value)
 {
     const std::string *s = getAttribute( canonical_name );
-    return s ? LLColor4U::parseColor4U(*s, &value ) : FALSE;
+    return s ? LLColor4U::parseColor4U(*s, &value ) : false;
 }
 
-BOOL LLXmlTreeNode::getFastAttributeVector3(LLStdStringHandle canonical_name, LLVector3& value)
+bool LLXmlTreeNode::getFastAttributeVector3(LLStdStringHandle canonical_name, LLVector3& value)
 {
     const std::string *s = getAttribute( canonical_name );
-    return s ? LLVector3::parseVector3(*s, &value ) : FALSE;
+    return s ? LLVector3::parseVector3(*s, &value ) : false;
 }
 
-BOOL LLXmlTreeNode::getFastAttributeVector3d(LLStdStringHandle canonical_name, LLVector3d& value)
+bool LLXmlTreeNode::getFastAttributeVector3d(LLStdStringHandle canonical_name, LLVector3d& value)
 {
     const std::string *s = getAttribute( canonical_name );
-    return s ? LLVector3d::parseVector3d(*s,  &value ) : FALSE;
+    return s ? LLVector3d::parseVector3d(*s,  &value ) : false;
 }
 
-BOOL LLXmlTreeNode::getFastAttributeQuat(LLStdStringHandle canonical_name, LLQuaternion& value)
+bool LLXmlTreeNode::getFastAttributeQuat(LLStdStringHandle canonical_name, LLQuaternion& value)
 {
     const std::string *s = getAttribute( canonical_name );
-    return s ? LLQuaternion::parseQuat(*s, &value ) : FALSE;
+    return s ? LLQuaternion::parseQuat(*s, &value ) : false;
 }
 
-BOOL LLXmlTreeNode::getFastAttributeUUID(LLStdStringHandle canonical_name, LLUUID& value)
+bool LLXmlTreeNode::getFastAttributeUUID(LLStdStringHandle canonical_name, LLUUID& value)
 {
     const std::string *s = getAttribute( canonical_name );
-    return s ? LLUUID::parseUUID(*s, &value ) : FALSE;
+    return s ? LLUUID::parseUUID(*s, &value ) : false;
 }
 
-BOOL LLXmlTreeNode::getFastAttributeString(LLStdStringHandle canonical_name, std::string& value)
+bool LLXmlTreeNode::getFastAttributeString(LLStdStringHandle canonical_name, std::string& value)
 {
     const std::string *s = getAttribute( canonical_name );
     if( !s )
     {
-        return FALSE;
+        return false;
     }
 
     value = *s;
-    return TRUE;
+    return true;
 }
 
 
 //////////////////////////////////////////////////////////////
 
-BOOL LLXmlTreeNode::getAttributeBOOL(const std::string& name, BOOL& value)
+bool LLXmlTreeNode::getAttributeBOOL(const std::string& name, bool& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeBOOL(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeU8(const std::string& name, U8& value)
+bool LLXmlTreeNode::getAttributeU8(const std::string& name, U8& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeU8(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeS8(const std::string& name, S8& value)
+bool LLXmlTreeNode::getAttributeS8(const std::string& name, S8& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeS8(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeS16(const std::string& name, S16& value)
+bool LLXmlTreeNode::getAttributeS16(const std::string& name, S16& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeS16(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeU16(const std::string& name, U16& value)
+bool LLXmlTreeNode::getAttributeU16(const std::string& name, U16& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeU16(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeU32(const std::string& name, U32& value)
+bool LLXmlTreeNode::getAttributeU32(const std::string& name, U32& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeU32(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeS32(const std::string& name, S32& value)
+bool LLXmlTreeNode::getAttributeS32(const std::string& name, S32& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeS32(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeF32(const std::string& name, F32& value)
+bool LLXmlTreeNode::getAttributeF32(const std::string& name, F32& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeF32(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeF64(const std::string& name, F64& value)
+bool LLXmlTreeNode::getAttributeF64(const std::string& name, F64& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeF64(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeColor(const std::string& name, LLColor4& value)
+bool LLXmlTreeNode::getAttributeColor(const std::string& name, LLColor4& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeColor(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeColor4(const std::string& name, LLColor4& value)
+bool LLXmlTreeNode::getAttributeColor4(const std::string& name, LLColor4& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeColor4(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeColor4U(const std::string& name, LLColor4U& value)
+bool LLXmlTreeNode::getAttributeColor4U(const std::string& name, LLColor4U& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeColor4U(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeVector3(const std::string& name, LLVector3& value)
+bool LLXmlTreeNode::getAttributeVector3(const std::string& name, LLVector3& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeVector3(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeVector3d(const std::string& name, LLVector3d& value)
+bool LLXmlTreeNode::getAttributeVector3d(const std::string& name, LLVector3d& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeVector3d(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeQuat(const std::string& name, LLQuaternion& value)
+bool LLXmlTreeNode::getAttributeQuat(const std::string& name, LLQuaternion& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeQuat(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeUUID(const std::string& name, LLUUID& value)
+bool LLXmlTreeNode::getAttributeUUID(const std::string& name, LLUUID& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeUUID(canonical_name, value);
 }
 
-BOOL LLXmlTreeNode::getAttributeString(const std::string& name, std::string& value)
+bool LLXmlTreeNode::getAttributeString(const std::string& name, std::string& value)
 {
     LLStdStringHandle canonical_name = LLXmlTree::sAttributeKeys.addString( name );
     return getFastAttributeString(canonical_name, value);
@@ -509,8 +509,8 @@ LLXmlTreeParser::LLXmlTreeParser(LLXmlTree* tree)
     : mTree(tree),
       mRoot( NULL ),
       mCurrent( NULL ),
-      mDump( FALSE ),
-      mKeepContents(FALSE)
+      mDump( false ),
+      mKeepContents(false)
 {
 }
 
@@ -518,14 +518,14 @@ LLXmlTreeParser::~LLXmlTreeParser()
 {
 }
 
-BOOL LLXmlTreeParser::parseFile(const std::string &path, LLXmlTreeNode** root, BOOL keep_contents)
+bool LLXmlTreeParser::parseFile(const std::string &path, LLXmlTreeNode** root, bool keep_contents)
 {
     llassert( !mRoot );
     llassert( !mCurrent );
 
     mKeepContents = keep_contents;
 
-    BOOL success = LLXmlParser::parseFile(path);
+    bool success = LLXmlParser::parseFile(path);
 
     *root = mRoot;
     mRoot = NULL;
@@ -688,7 +688,7 @@ void LLXmlTreeParser::unparsedEntityDecl(
 void test_llxmltree()
 {
     LLXmlTree tree;
-    BOOL success = tree.parseFile( "test.xml" );
+    bool success = tree.parseFile( "test.xml" );
     if( success )
     {
         tree.dump();
diff --git a/indra/llxml/llxmltree.h b/indra/llxml/llxmltree.h
index 0f7361c554..120d7d3e56 100644
--- a/indra/llxml/llxmltree.h
+++ b/indra/llxml/llxmltree.h
@@ -55,7 +55,7 @@ public:
     virtual ~LLXmlTree();
     void cleanup();
 
-    virtual BOOL    parseFile(const std::string &path, BOOL keep_contents = TRUE);
+    virtual bool    parseFile(const std::string &path, bool keep_contents = true);
 
     LLXmlTreeNode*  getRoot() { return mRoot; }
 
@@ -97,50 +97,50 @@ public:
     {
         return mName;
     }
-    BOOL hasName( const std::string& name )
+    bool hasName( const std::string& name )
     {
         return mName == name;
     }
 
-    BOOL hasAttribute( const std::string& name );
+    bool hasAttribute( const std::string& name );
 
     // Fast versions use cannonical_name handlee to entru in LLXmlTree::sAttributeKeys string table
-    BOOL            getFastAttributeBOOL(       LLStdStringHandle cannonical_name, BOOL& value );
-    BOOL            getFastAttributeU8(         LLStdStringHandle cannonical_name, U8& value );
-    BOOL            getFastAttributeS8(         LLStdStringHandle cannonical_name, S8& value );
-    BOOL            getFastAttributeU16(        LLStdStringHandle cannonical_name, U16& value );
-    BOOL            getFastAttributeS16(        LLStdStringHandle cannonical_name, S16& value );
-    BOOL            getFastAttributeU32(        LLStdStringHandle cannonical_name, U32& value );
-    BOOL            getFastAttributeS32(        LLStdStringHandle cannonical_name, S32& value );
-    BOOL            getFastAttributeF32(        LLStdStringHandle cannonical_name, F32& value );
-    BOOL            getFastAttributeF64(        LLStdStringHandle cannonical_name, F64& value );
-    BOOL            getFastAttributeColor(      LLStdStringHandle cannonical_name, LLColor4& value );
-    BOOL            getFastAttributeColor4(     LLStdStringHandle cannonical_name, LLColor4& value );
-    BOOL            getFastAttributeColor4U(    LLStdStringHandle cannonical_name, LLColor4U& value );
-    BOOL            getFastAttributeVector3(    LLStdStringHandle cannonical_name, LLVector3& value );
-    BOOL            getFastAttributeVector3d(   LLStdStringHandle cannonical_name, LLVector3d& value );
-    BOOL            getFastAttributeQuat(       LLStdStringHandle cannonical_name, LLQuaternion& value );
-    BOOL            getFastAttributeUUID(       LLStdStringHandle cannonical_name, LLUUID& value );
-    BOOL            getFastAttributeString(     LLStdStringHandle cannonical_name, std::string& value );
+    bool            getFastAttributeBOOL(       LLStdStringHandle cannonical_name, bool& value );
+    bool            getFastAttributeU8(         LLStdStringHandle cannonical_name, U8& value );
+    bool            getFastAttributeS8(         LLStdStringHandle cannonical_name, S8& value );
+    bool            getFastAttributeU16(        LLStdStringHandle cannonical_name, U16& value );
+    bool            getFastAttributeS16(        LLStdStringHandle cannonical_name, S16& value );
+    bool            getFastAttributeU32(        LLStdStringHandle cannonical_name, U32& value );
+    bool            getFastAttributeS32(        LLStdStringHandle cannonical_name, S32& value );
+    bool            getFastAttributeF32(        LLStdStringHandle cannonical_name, F32& value );
+    bool            getFastAttributeF64(        LLStdStringHandle cannonical_name, F64& value );
+    bool            getFastAttributeColor(      LLStdStringHandle cannonical_name, LLColor4& value );
+    bool            getFastAttributeColor4(     LLStdStringHandle cannonical_name, LLColor4& value );
+    bool            getFastAttributeColor4U(    LLStdStringHandle cannonical_name, LLColor4U& value );
+    bool            getFastAttributeVector3(    LLStdStringHandle cannonical_name, LLVector3& value );
+    bool            getFastAttributeVector3d(   LLStdStringHandle cannonical_name, LLVector3d& value );
+    bool            getFastAttributeQuat(       LLStdStringHandle cannonical_name, LLQuaternion& value );
+    bool            getFastAttributeUUID(       LLStdStringHandle cannonical_name, LLUUID& value );
+    bool            getFastAttributeString(     LLStdStringHandle cannonical_name, std::string& value );
 
     // Normal versions find 'name' in LLXmlTree::sAttributeKeys then call fast versions
-    virtual BOOL        getAttributeBOOL(       const std::string& name, BOOL& value );
-    virtual BOOL        getAttributeU8(         const std::string& name, U8& value );
-    virtual BOOL        getAttributeS8(         const std::string& name, S8& value );
-    virtual BOOL        getAttributeU16(        const std::string& name, U16& value );
-    virtual BOOL        getAttributeS16(        const std::string& name, S16& value );
-    virtual BOOL        getAttributeU32(        const std::string& name, U32& value );
-    virtual BOOL        getAttributeS32(        const std::string& name, S32& value );
-    virtual BOOL        getAttributeF32(        const std::string& name, F32& value );
-    virtual BOOL        getAttributeF64(        const std::string& name, F64& value );
-    virtual BOOL        getAttributeColor(      const std::string& name, LLColor4& value );
-    virtual BOOL        getAttributeColor4(     const std::string& name, LLColor4& value );
-    virtual BOOL        getAttributeColor4U(    const std::string& name, LLColor4U& value );
-    virtual BOOL        getAttributeVector3(    const std::string& name, LLVector3& value );
-    virtual BOOL        getAttributeVector3d(   const std::string& name, LLVector3d& value );
-    virtual BOOL        getAttributeQuat(       const std::string& name, LLQuaternion& value );
-    virtual BOOL        getAttributeUUID(       const std::string& name, LLUUID& value );
-    virtual BOOL        getAttributeString(     const std::string& name, std::string& value );
+    virtual bool        getAttributeBOOL(       const std::string& name, bool& value );
+    virtual bool        getAttributeU8(         const std::string& name, U8& value );
+    virtual bool        getAttributeS8(         const std::string& name, S8& value );
+    virtual bool        getAttributeU16(        const std::string& name, U16& value );
+    virtual bool        getAttributeS16(        const std::string& name, S16& value );
+    virtual bool        getAttributeU32(        const std::string& name, U32& value );
+    virtual bool        getAttributeS32(        const std::string& name, S32& value );
+    virtual bool        getAttributeF32(        const std::string& name, F32& value );
+    virtual bool        getAttributeF64(        const std::string& name, F64& value );
+    virtual bool        getAttributeColor(      const std::string& name, LLColor4& value );
+    virtual bool        getAttributeColor4(     const std::string& name, LLColor4& value );
+    virtual bool        getAttributeColor4U(    const std::string& name, LLColor4U& value );
+    virtual bool        getAttributeVector3(    const std::string& name, LLVector3& value );
+    virtual bool        getAttributeVector3d(   const std::string& name, LLVector3d& value );
+    virtual bool        getAttributeQuat(       const std::string& name, LLQuaternion& value );
+    virtual bool        getAttributeUUID(       const std::string& name, LLUUID& value );
+    virtual bool        getAttributeString(     const std::string& name, std::string& value );
 
     const std::string& getContents()
     {
@@ -199,7 +199,7 @@ public:
     LLXmlTreeParser(LLXmlTree* tree);
     virtual ~LLXmlTreeParser();
 
-    BOOL parseFile(const std::string &path, LLXmlTreeNode** root, BOOL keep_contents );
+    bool parseFile(const std::string &path, LLXmlTreeNode** root, bool keep_contents );
 
 protected:
     const std::string& tabs();
@@ -227,8 +227,8 @@ protected:
     LLXmlTree*      mTree;
     LLXmlTreeNode*  mRoot;
     LLXmlTreeNode*  mCurrent;
-    BOOL            mDump;  // Dump parse tree to LL_INFOS() as it is read.
-    BOOL            mKeepContents;
+    bool            mDump;  // Dump parse tree to LL_INFOS() as it is read.
+    bool            mKeepContents;
 };
 
 #endif  // LL_LLXMLTREE_H
diff --git a/indra/llxml/tests/llcontrol_test.cpp b/indra/llxml/tests/llcontrol_test.cpp
index f5f8b285f7..4192e029c5 100644
--- a/indra/llxml/tests/llcontrol_test.cpp
+++ b/indra/llxml/tests/llcontrol_test.cpp
@@ -112,7 +112,7 @@ namespace tut
         LLControlGroup test_cg("foo2");
         std::string temp_test_file = (mTestConfigDir + "setting_llsd_temp.xml");
         mCleanups.push_back(temp_test_file);
-        mCG->saveToFile(temp_test_file.c_str(), TRUE);
+        mCG->saveToFile(temp_test_file.c_str(), true);
         results = test_cg.loadFromFile(temp_test_file.c_str());
         ensure("number of changed settings loaded", (results == 1));
         ensure("value of changed settings loaded", (test_cg.getU32("TestSetting") == 13));
@@ -129,12 +129,12 @@ namespace tut
         int results = mCG->loadFromFile(mTestConfigFile.c_str(), true);
         LLControlVariable* control = mCG->getControl("TestSetting");
         LLSD new_value = 13;
-        control->setValue(new_value, FALSE);
+        control->setValue(new_value, false);
         ensure_equals("value of changed setting", mCG->getU32("TestSetting"), 13);
         LLControlGroup test_cg("foo3");
         std::string temp_test_file = (mTestConfigDir + "setting_llsd_persist_temp.xml");
         mCleanups.push_back(temp_test_file);
-        mCG->saveToFile(temp_test_file.c_str(), TRUE);
+        mCG->saveToFile(temp_test_file.c_str(), true);
         results = test_cg.loadFromFile(temp_test_file.c_str());
         //If we haven't changed any settings, then we shouldn't have any settings to load
         ensure("number of non-persisted changed settings loaded", (results == 0));
diff --git a/indra/media_plugins/cef/mac_volume_catcher.cpp b/indra/media_plugins/cef/mac_volume_catcher.cpp
index 32251c0999..54ebbfe1c7 100644
--- a/indra/media_plugins/cef/mac_volume_catcher.cpp
+++ b/indra/media_plugins/cef/mac_volume_catcher.cpp
@@ -1,6 +1,6 @@
 /**
  * @file mac_volume_catcher.cpp
- * @brief A Mac OS X specific hack to control the volume level of all audio channels opened by a process.
+ * @brief A macOS specific hack to control the volume level of all audio channels opened by a process.
  *
  * @cond
  * $LicenseInfo:firstyear=2010&license=viewerlgpl$
diff --git a/indra/media_plugins/cef/media_plugin_cef.cpp b/indra/media_plugins/cef/media_plugin_cef.cpp
index 1346dd2a52..9c205b558c 100644
--- a/indra/media_plugins/cef/media_plugin_cef.cpp
+++ b/indra/media_plugins/cef/media_plugin_cef.cpp
@@ -816,7 +816,7 @@ void MediaPluginCEF::receiveMessage(const char* message_string)
                 S32 y = message_in.getValueS32("y");
 
                 // only even send left mouse button events to the CEF library
-                // (partially prompted by crash in OS X CEF when sending right button events)
+                // (partially prompted by crash in macOS CEF when sending right button events)
                 // we catch the right click in viewer and display our own context menu anyway
                 S32 button = message_in.getValueS32("button");
                 dullahan::EMouseButton btn = dullahan::MB_MOUSE_BUTTON_LEFT;
diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index b1c1c73786..d639840f70 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -20,12 +20,10 @@ include(DBusGlib)
 endif ()
 include(DragDrop)
 include(EXPAT)
-include(FMODSTUDIO)
 include(Hunspell)
 if (USE_AUTOBUILD_3P OR USE_CONAN)
 include(JPEGEncoderBasic)
 endif ()
-include(JsonCpp)
 include(LLAppearance)
 include(LLAudio)
 if (USE_AUTOBUILD_3P OR USE_CONAN)
@@ -129,7 +127,6 @@ set(viewer_SOURCE_FILES
     llblockedlistitem.cpp
     llblocklist.cpp
     llbox.cpp
-    llbreadcrumbview.cpp
     llbrowsernotification.cpp
     llbuycurrencyhtml.cpp
     llcallingcard.cpp
@@ -387,7 +384,6 @@ set(viewer_SOURCE_FILES
     lllandmarkactions.cpp
     lllandmarklist.cpp
     lllegacyatmospherics.cpp
-    lllistbrowser.cpp
     lllistcontextmenu.cpp
     lllistview.cpp
     lllocalbitmaps.cpp
@@ -527,6 +523,7 @@ set(viewer_SOURCE_FILES
     llpathfindingobject.cpp
     llpathfindingobjectlist.cpp
     llpathfindingpathtool.cpp
+    llpbrterrainfeatures.cpp
     llpersistentnotificationstorage.cpp
     llphysicsmotion.cpp
     llphysicsshapebuilderutil.cpp
@@ -553,7 +550,6 @@ set(viewer_SOURCE_FILES
     llregioninfomodel.cpp
     llregionposition.cpp
     llremoteparcelrequest.cpp
-    llsavedsettingsglue.cpp
     llsaveoutfitcombobtn.cpp
     llscenemonitor.cpp
     llsceneview.cpp
@@ -650,7 +646,6 @@ set(viewer_SOURCE_FILES
     llurlhistory.cpp
     llurllineeditorctrl.cpp
     llurlwhitelist.cpp
-    llvectorperfoptions.cpp
     llversioninfo.cpp
     llviewchildren.cpp
     llviewerassetstats.cpp
@@ -794,7 +789,6 @@ set(viewer_HEADER_FILES
     llblockedlistitem.h
     llblocklist.h
     llbox.h
-    llbreadcrumbview.h
     llbuycurrencyhtml.h
     llcallingcard.h
     llcapabilityprovider.h
@@ -1053,7 +1047,6 @@ set(viewer_HEADER_FILES
     lllandmarkactions.h
     lllandmarklist.h
     lllightconstants.h
-    lllistbrowser.h
     lllistcontextmenu.h
     lllistview.h
     lllocalbitmaps.h
@@ -1180,6 +1173,7 @@ set(viewer_HEADER_FILES
     llpathfindingobject.h
     llpathfindingobjectlist.h
     llpathfindingpathtool.h
+    llpbrterrainfeatures.h
     llpersistentnotificationstorage.h
     llphysicsmotion.h
     llphysicsshapebuilderutil.h
@@ -1208,7 +1202,6 @@ set(viewer_HEADER_FILES
     llremoteparcelrequest.h
     llresourcedata.h
     llrootview.h
-    llsavedsettingsglue.h
     llsaveoutfitcombobtn.h
     llscenemonitor.h
     llsceneview.h
@@ -1309,7 +1302,6 @@ set(viewer_HEADER_FILES
     llurlhistory.h
     llurllineeditorctrl.h
     llurlwhitelist.h
-    llvectorperfoptions.h
     llversioninfo.h
     llviewchildren.h
     llviewerassetstats.h
@@ -1402,7 +1394,6 @@ set(viewer_HEADER_FILES
     llworldmapview.h
     llxmlrpclistener.h
     llxmlrpctransaction.h
-    macmain.h
     noise.h
     pipeline.h
     roles_constants.h
@@ -1455,7 +1446,6 @@ if (DARWIN)
   # Add resource files to the project.
   set(viewer_RESOURCE_FILES
     secondlife.icns
-    macview.r
     Info-SecondLife.plist
     SecondLife.xib/
     # CMake doesn't seem to support Xcode language variants well just yet
@@ -1794,13 +1784,6 @@ if (WINDOWS)
                )
     endif (ADDRESS_SIZE EQUAL 64)
 
-    if (TARGET ll::fmodstudio)
-      list(APPEND COPY_INPUT_DEPENDENCIES
-           ${SHARED_LIB_STAGING_DIR}/fmod.dll
-           ${SHARED_LIB_STAGING_DIR}/fmodL.dll
-          )
-    endif ()
-
     if (TARGET ll::openal)
       list(APPEND COPY_INPUT_DEPENDENCIES
            ${SHARED_LIB_STAGING_DIR}/OpenAL32.dll
@@ -1817,7 +1800,6 @@ if (WINDOWS)
         --arch=${ARCH}
         --artwork=${ARTWORK_DIR}
         "--bugsplat=${BUGSPLAT_DB}"
-        "--fmodstudio=${USE_FMODSTUDIO}"
         "--openal=${USE_OPENAL}"
         --build=${CMAKE_CURRENT_BINARY_DIR}
         --buildtype=$<CONFIG>
@@ -1878,7 +1860,6 @@ if (WINDOWS)
               --arch=${ARCH}
               --artwork=${ARTWORK_DIR}
               "--bugsplat=${BUGSPLAT_DB}"
-              "--fmodstudio=${USE_FMODSTUDIO}"
               "--openal=${USE_OPENAL}"
               --build=${CMAKE_CURRENT_BINARY_DIR}
               --buildtype=$<CONFIG>
@@ -2077,7 +2058,6 @@ if (LINUX)
         --arch=${ARCH}
         --artwork=${ARTWORK_DIR}
         "--bugsplat=${BUGSPLAT_DB}"
-        "--fmodstudio=${USE_FMODSTUDIO}"
         "--openal=${USE_OPENAL}"
         --build=${CMAKE_CURRENT_BINARY_DIR}
         --buildtype=${CMAKE_BUILD_TYPE}
@@ -2105,7 +2085,6 @@ if (LINUX)
       --arch=${ARCH}
       --artwork=${ARTWORK_DIR}
       "--bugsplat=${BUGSPLAT_DB}"
-      "--fmodstudio=${USE_FMODSTUDIO}"
       "--openal=${USE_OPENAL}"
       --build=${CMAKE_CURRENT_BINARY_DIR}
       --buildtype=${CMAKE_BUILD_TYPE}
@@ -2188,7 +2167,6 @@ if (DARWIN)
       --arch=${ARCH}
       --artwork=${ARTWORK_DIR}
       "--bugsplat=${BUGSPLAT_DB}"
-      "--fmodstudio=${USE_FMODSTUDIO}"
       "--openal=${USE_OPENAL}"
       --build=${CMAKE_CURRENT_BINARY_DIR}
       --buildtype=$<CONFIG>
@@ -2248,7 +2226,6 @@ if (DARWIN)
               --arch=${ARCH}
               --artwork=${ARTWORK_DIR}
               "--bugsplat=${BUGSPLAT_DB}"
-              "--fmodstudio=${USE_FMODSTUDIO}"
               "--openal=${USE_OPENAL}"
               --build=${CMAKE_CURRENT_BINARY_DIR}
               --buildtype=$<CONFIG>
@@ -2286,7 +2263,7 @@ if (PACKAGE AND (RELEASE_CRASH_REPORTING OR NON_RELEASE_CRASH_REPORTING) AND VIE
         OUTPUT_VARIABLE PARENT_DIRECTORY_CYGWIN
         OUTPUT_STRIP_TRAILING_WHITESPACE)
       add_custom_command(OUTPUT "${VIEWER_SYMBOL_FILE}"
-        # Use of 'tar ...j' here assumes VIEWER_SYMBOL_FILE endswith .tar.xz;
+        # Use of 'tar ...J' here assumes VIEWER_SYMBOL_FILE endswith .tar.xz;
         # testing a string suffix is painful enough in CMake language that
         # we'll continue assuming it until forced to generalize.
         COMMAND "tar"
diff --git a/indra/newview/app_settings/cmd_line.xml b/indra/newview/app_settings/cmd_line.xml
index 340334aee8..e16a5c7e76 100644
--- a/indra/newview/app_settings/cmd_line.xml
+++ b/indra/newview/app_settings/cmd_line.xml
@@ -209,12 +209,6 @@
       <string>NoAudio</string>
     </map>
 
-    <key>nofmod</key>
-    <map>
-      <key>map-to</key>
-      <string>UseMediaPluginsForStreamingAudio</string>
-    </map>
-
     <key>noninteractive</key>
     <map>
       <key>desc</key>
diff --git a/indra/newview/app_settings/keywords_lsl_default.xml b/indra/newview/app_settings/keywords_lsl_default.xml
index 893b017367..f99b86bd39 100644
--- a/indra/newview/app_settings/keywords_lsl_default.xml
+++ b/indra/newview/app_settings/keywords_lsl_default.xml
@@ -1945,6 +1945,15 @@
             <key>tooltip</key>
             <string/>
          </map>
+         <key>INVENTORY_SETTING</key>
+         <map>
+            <key>type</key>
+            <string>integer</string>
+            <key>value</key>
+            <integer>56</integer>
+            <key>tooltip</key>
+            <string/>
+         </map>
          <key>INVENTORY_SOUND</key>
          <map>
             <key>type</key>
diff --git a/indra/newview/app_settings/logcontrol.xml b/indra/newview/app_settings/logcontrol.xml
index 482012cdd6..51b5c66384 100644
--- a/indra/newview/app_settings/logcontrol.xml
+++ b/indra/newview/app_settings/logcontrol.xml
@@ -71,7 +71,7 @@
 						     <string>Inventory</string>
 						     <string>SceneLoadTiming</string>
 						     <string>Avatar</string>
-						     <string>Voice</string>		
+						     <string>Voice</string>
 						-->
 						</array>
 				</map>
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 9fa7a5c3d1..cc4ac25a06 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -5453,17 +5453,6 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
-    <key>UseMediaPluginsForStreamingAudio</key>
-    <map>
-      <key>Comment</key>
-      <string>Use media plugins (VLC) for streaming audio.</string>
-      <key>Persist</key>
-      <integer>1</integer>
-      <key>Type</key>
-      <string>Boolean</string>
-      <key>Value</key>
-      <integer>0</integer>
-    </map>
     <key>NoHardwareProbe</key>
     <map>
       <key>Comment</key>
@@ -7138,17 +7127,6 @@
         <key>Value</key>
             <integer>1</integer>
         </map>
-  <key>AlwaysRenderFriends</key>
-    <map>
-      <key>Comment</key>
-      <string>Always render friends regardless of max complexity</string>
-      <key>Persist</key>
-      <integer>1</integer>
-      <key>Type</key>
-      <string>Boolean</string>
-      <key>Value</key>
-      <integer>0</integer>
-    </map>
   <key>RenderAvatarCloth</key>
     <map>
       <key>Comment</key>
@@ -7310,7 +7288,7 @@
    <key>RenderHiDPI</key>
   <map>
     <key>Comment</key>
-    <string>Enable support for HiDPI displays, like Retina (MacOS X ONLY, requires restart)</string>
+    <string>Enable support for HiDPI displays, like Retina (macOS ONLY, requires restart)</string>
     <key>Persist</key>
     <integer>1</integer>
     <key>Type</key>
@@ -7741,7 +7719,7 @@
   <key>RenderMaxVRAMBudget</key>
   <map>
     <key>Comment</key>
-    <string>Maximum amount of texture memory to budget for (in MB), or 0 for autodetect.  Requires restart.</string>
+    <string>Maximum amount of texture memory to budget for (in MB), or 0 for autodetect.</string>
     <key>Persist</key>
     <integer>1</integer>
     <key>Type</key>
@@ -8744,6 +8722,17 @@
       <key>Value</key>
       <integer>1</integer>
     </map>
+    <key>NameTagDebugAVRezState</key>
+    <map>
+        <key>Comment</key>
+        <string>Show Avatar Rez state in name tag</string>
+        <key>Persist</key>
+        <integer>0</integer>
+        <key>Type</key>
+        <string>Boolean</string>
+        <key>Value</key>
+        <integer>0</integer>
+    </map>
     <key>RenderInitError</key>
     <map>
       <key>Comment</key>
@@ -9275,17 +9264,6 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
-    <key>RenderTerrainPBRForce</key>
-    <map>
-      <key>Comment</key>
-      <string>Force-load PBR terrain if enabled</string>
-      <key>Persist</key>
-      <integer>0</integer>
-      <key>Type</key>
-      <string>Boolean</string>
-      <key>Value</key>
-      <integer>0</integer>
-    </map>
     <key>RenderTerrainPBRDetail</key>
     <map>
       <key>Comment</key>
@@ -9330,6 +9308,17 @@
       <key>Value</key>
       <real>8.0</real>
     </map>
+    <key>RenderTerrainPBRTransformsEnabled</key>
+    <map>
+      <key>Comment</key>
+      <string>EXPERIMENTAL: Enable PBR Terrain texture transforms.</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>RenderTerrainPBRNormalsEnabled</key>
     <map>
       <key>Comment</key>
@@ -9440,16 +9429,27 @@
       <key>Value</key>
       <integer>1</integer>
     </map>
-    <key>RenderUseImpostors</key>
+    <key>RenderAvatarFriendsOnly</key>
     <map>
-      <key>Comment</key>
-    <string>OBSOLETE and UNUSED. See RenderAvatarMaxNonImpostors and RenderAvatarMaxComplexity.</string>
-      <key>Persist</key>
-    <integer>0</integer>
-      <key>Type</key>
-      <string>Boolean</string>
-      <key>Value</key>
-    <integer>0</integer>
+        <key>Comment</key>
+        <string>When enabled hides all avatars that aren't friends. Does not affect inworld control avatars (animeshes), nor self.</string>
+        <key>Persist</key>
+        <integer>0</integer>
+        <key>Type</key>
+        <string>Boolean</string>
+        <key>Value</key>
+        <real>0</real>
+    </map>
+    <key>RenderAvatarComplexityMode</key>
+    <map>
+        <key>Comment</key>
+        <string>0 - complexity limit applies to everyone, 1 - always show friends, 2 - only show friends</string>
+        <key>Persist</key>
+        <integer>1</integer>
+        <key>Type</key>
+        <string>S32</string>
+        <key>Value</key>
+        <real>0</real>
     </map>
   <key>RenderAvatarMaxNonImpostors</key>
   <map>
@@ -11399,6 +11399,28 @@
       <key>Value</key>
       <string />
     </map>
+    <key>TextureScaleMinAreaFactor</key>
+    <map>
+        <key>Comment</key>
+        <string>Limits how texture scale affects area calculation.</string>
+        <key>Persist</key>
+        <integer>1</integer>
+        <key>Type</key>
+        <string>F32</string>
+        <key>Value</key>
+        <real>0.04</real>
+    </map>
+    <key>TextureScaleMaxAreaFactor</key>
+    <map>
+        <key>Comment</key>
+        <string>Limits how texture scale affects area calculation.</string>
+        <key>Persist</key>
+        <integer>1</integer>
+        <key>Type</key>
+        <string>F32</string>
+        <key>Value</key>
+        <real>25.0</real>
+    </map>
     <key>ThreadPoolSizes</key>
     <map>
       <key>Comment</key>
@@ -12665,7 +12687,7 @@
     <key>Persist</key>
     <integer>1</integer>
     <key>Type</key>
-    <string>S32</string>
+    <string>U32</string>
     <key>Value</key>
     <integer>8</integer>
   </map>
@@ -14995,6 +15017,226 @@
       <key>Value</key>
       <string>00000000-0000-0000-0000-000000000000</string>
     </map>
+    <key>LocalTerrainTransform1ScaleU</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset1 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>1.0</real>
+    </map>
+    <key>LocalTerrainTransform1ScaleV</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset1 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>1.0</real>
+    </map>
+    <key>LocalTerrainTransform1Rotation</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset1 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
+    <key>LocalTerrainTransform1OffsetU</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset1 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
+    <key>LocalTerrainTransform1OffsetV</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset1 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
+    <key>LocalTerrainTransform2ScaleU</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset2 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>1.0</real>
+    </map>
+    <key>LocalTerrainTransform2ScaleV</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset2 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>1.0</real>
+    </map>
+    <key>LocalTerrainTransform2Rotation</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset2 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
+    <key>LocalTerrainTransform2OffsetU</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset2 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
+    <key>LocalTerrainTransform2OffsetV</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset2 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
+    <key>LocalTerrainTransform3ScaleU</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset3 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>1.0</real>
+    </map>
+    <key>LocalTerrainTransform3ScaleV</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset3 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>1.0</real>
+    </map>
+    <key>LocalTerrainTransform3Rotation</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset3 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
+    <key>LocalTerrainTransform3OffsetU</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset3 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
+    <key>LocalTerrainTransform3OffsetV</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset3 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
+    <key>LocalTerrainTransform4ScaleU</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset4 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>1.0</real>
+    </map>
+    <key>LocalTerrainTransform4ScaleV</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset4 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>1.0</real>
+    </map>
+    <key>LocalTerrainTransform4Rotation</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset4 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
+    <key>LocalTerrainTransform4OffsetU</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset4 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
+    <key>LocalTerrainTransform4OffsetV</key>
+    <map>
+      <key>Comment</key>
+      <string>KHR texture transform component if LocalTerrainAsset4 is set</string>
+      <key>Persist</key>
+      <integer>0</integer>
+      <key>Type</key>
+      <string>F32</string>
+      <key>Value</key>
+      <real>0.0</real>
+    </map>
 	<key>PathfindingRetrieveNeighboringRegion</key>
     <map>
       <key>Comment</key>
@@ -15879,5 +16121,16 @@
   <key>Value</key>
   <integer>0</integer>
 </map>
+  <key>GLTFEnabled</key>
+  <map>
+    <key>Comment</key>
+    <string>Enable GLTF support.  Set to true by simulator if the simulator you are connected to supports GLTF Asset upload.  WARNING: Manually setting this to true will enable buttons that can drain your L$ balance by implicitly uploading textures without asking.</string>
+    <key>Persist</key>
+    <integer>0</integer>
+    <key>Type</key>
+    <string>Boolean</string>
+    <key>Value</key>
+    <integer>0</integer>
+  </map>
 </map>
 </llsd>
diff --git a/indra/newview/app_settings/shaders/class1/deferred/aoUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/aoUtil.glsl
index 1c394e1de4..1a065daf89 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/aoUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/aoUtil.glsl
@@ -23,8 +23,7 @@
  * $/LicenseInfo$
  */
 
-uniform sampler2D       noiseMap;
-uniform sampler2D   normalMap;
+uniform sampler2D   noiseMap;
 uniform sampler2D   depthMap;
 
 uniform float ssao_radius;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl
index 438e1d1b33..37dcbbd328 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl
@@ -27,8 +27,6 @@
 
 out vec4 frag_color;
 
-uniform sampler2D diffuseMap;
-
 void main()
 {
     frag_color = vec4(1,1,1,1);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
index 8627ab1852..23a3ca4911 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/blurLightF.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file blurLightF.glsl
  *
  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2007, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -27,7 +27,6 @@
 
 out vec4 frag_color;
 
-uniform sampler2D normalMap;
 uniform sampler2D lightMap;
 
 uniform float dist_factor;
@@ -42,16 +41,16 @@ in vec2 vary_fragcoord;
 vec4 getPosition(vec2 pos_screen);
 vec4 getNorm(vec2 pos_screen);
 
-void main() 
+void main()
 {
     vec2 tc = vary_fragcoord.xy;
     vec4 norm = getNorm(tc);
     vec3 pos = getPosition(tc).xyz;
     vec4 ccol = texture(lightMap, tc).rgba;
-  
+
     vec2 dlt = kern_scale * delta / (1.0+norm.xy*norm.xy);
     dlt /= max(-pos.z*dist_factor, 1.0);
-    
+
     vec2 defined_weight = kern[0].xy; // special case the first (centre) sample's weight in the blur; we have to sample it anyway so we get it for 'free'
     vec4 col = defined_weight.xyxx * ccol;
 
@@ -75,15 +74,15 @@ void main()
     k[1] = (k[0]+k[2])*0.5f;
     k[3] = (k[2]+k[4])*0.5f;
     k[5] = (k[4]+k[6])*0.5f;
-    
+
     for (int i = 1; i < 7; i++)
     {
         vec2 samptc = tc + k[i].z*dlt*2.0;
         samptc /= screen_res;
-        vec3 samppos = getPosition(samptc).xyz; 
+        vec3 samppos = getPosition(samptc).xyz;
 
         float d = dot(norm.xyz, samppos.xyz-pos.xyz);// dist from plane
-        
+
         if (d*d <= pointplanedist_tolerance_pow2)
         {
             col += texture(lightMap, samptc)*k[i].xyxx;
@@ -95,10 +94,10 @@ void main()
     {
         vec2 samptc = tc - k[i].z*dlt*2.0;
         samptc /= screen_res;
-        vec3 samppos = getPosition(samptc).xyz; 
+        vec3 samppos = getPosition(samptc).xyz;
 
         float d = dot(norm.xyz, samppos.xyz-pos.xyz);// dist from plane
-        
+
         if (d*d <= pointplanedist_tolerance_pow2)
         {
             col += texture(lightMap, samptc)*k[i].xyxx;
@@ -108,7 +107,7 @@ void main()
 
     col /= defined_weight.xyxx;
     //col.y *= col.y;
-    
+
     frag_color = max(col, vec4(0));
 
 #ifdef IS_AMD_CARD
diff --git a/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
index 38fbda316b..5193a46ac2 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/deferredUtil.glsl
@@ -50,7 +50,6 @@ SOFTWARE.
 
 uniform sampler2D   normalMap;
 uniform sampler2D   depthMap;
-uniform sampler2D emissiveRect;
 uniform sampler2D projectionMap; // rgba
 uniform sampler2D brdfLut;
 
@@ -487,6 +486,43 @@ vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
     return clamp(color, vec3(0), vec3(10));
 }
 
+vec3 pbrCalcPointLightOrSpotLight(vec3 diffuseColor, vec3 specularColor,
+                    float perceptualRoughness,
+                    float metallic,
+                    vec3 n, // normal
+                    vec3 p, // pixel position
+                    vec3 v, // view vector (negative normalized pixel position)
+                    vec3 lp, // light position
+                    vec3 ld, // light direction (for spotlights)
+                    vec3 lightColor,
+                    float lightSize, float falloff, float is_pointlight, float ambiance)
+{
+    vec3 color = vec3(0,0,0);
+
+    vec3 lv = lp.xyz - p;
+
+    float lightDist = length(lv);
+
+    float dist = lightDist / lightSize;
+    if (dist <= 1.0)
+    {
+        lv /= lightDist;
+
+        float dist_atten = calcLegacyDistanceAttenuation(dist, falloff);
+
+        // spotlight coefficient.
+        float spot = max(dot(-ld, lv), is_pointlight);
+        // spot*spot => GL_SPOT_EXPONENT=2
+        float spot_atten = spot*spot;
+
+        vec3 intensity = spot_atten * dist_atten * lightColor * 3.0; //magic number to balance with legacy materials
+
+        color = intensity*pbrPunctual(diffuseColor, specularColor, perceptualRoughness, metallic, n.xyz, v, lv);
+    }
+
+    return color;
+}
+
 void calcDiffuseSpecular(vec3 baseColor, float metallic, inout vec3 diffuseColor, inout vec3 specularColor)
 {
     vec3 f0 = vec3(0.04);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/exposureF.glsl b/indra/newview/app_settings/shaders/class1/deferred/exposureF.glsl
index eff7221ae7..67890032df 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/exposureF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/exposureF.glsl
@@ -1,28 +1,28 @@
-/** 
+/**
  * @file exposureF.glsl
  *
  * $LicenseInfo:firstyear=2023&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2023, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
- 
+
 /*[EXTRA_CODE_HERE]*/
 
 out vec4 frag_color;
@@ -43,7 +43,7 @@ float lum(vec3 col)
     return dot(l, col);
 }
 
-void main() 
+void main()
 {
     vec2 tc = vec2(0.5,0.5);
 
@@ -53,13 +53,13 @@ void main()
     L /= max_L;
     L = pow(L, 2.0);
     float s = mix(dynamic_exposure_params.z, dynamic_exposure_params.y, L);
-    
+
 #ifdef USE_LAST_EXPOSURE
     float prev = texture(exposureMap, vec2(0.5,0.5)).r;
 
     s = mix(prev, s, min(dt*2.0*abs(prev-s), 0.04));
 #endif
-    
+
     frag_color = max(vec4(s, s, s, dt), vec4(0.0));
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
index 52dfed06ae..2b9cc6ae5a 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/fullbrightF.glsl
@@ -1,28 +1,28 @@
-/** 
+/**
  * @file deferred/fullbrightF.glsl
  *
  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2007, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
- 
+
 /*[EXTRA_CODE_HERE]*/
 
 out vec4 frag_color;
@@ -52,7 +52,7 @@ vec4 applySkyAndWaterFog(vec3 pos, vec3 additive, vec3 atten, vec4 color);
 
 void mirrorClip(vec3 pos);
 
-void main() 
+void main()
 {
     mirrorClip(vary_position);
 #ifdef IS_ALPHA
@@ -90,7 +90,7 @@ void main()
     calcAtmosphericVars(pos.xyz, vec3(0), 1.0, sunlit, amblit, additive, atten);
 
     color.rgb = applySkyAndWaterFog(pos, additive, atten, color).rgb;
-    
+
 #endif
 
 #endif
diff --git a/indra/newview/app_settings/shaders/class1/deferred/globalF.glsl b/indra/newview/app_settings/shaders/class1/deferred/globalF.glsl
index e407dad21c..d493976eba 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/globalF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/globalF.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file class1/deferred/globalF.glsl
  *
  * $LicenseInfo:firstyear=2024&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2024, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
diff --git a/indra/newview/app_settings/shaders/class1/deferred/luminanceF.glsl b/indra/newview/app_settings/shaders/class1/deferred/luminanceF.glsl
index 95b2f80e06..3432bf07ef 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/luminanceF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/luminanceF.glsl
@@ -1,32 +1,32 @@
-/** 
+/**
  * @file luminanceF.glsl
  *
  * $LicenseInfo:firstyear=2023&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2023, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
- 
+
 
 /*[EXTRA_CODE_HERE]*/
 
-// take a luminance sample of diffuseRect and emissiveRect 
+// take a luminance sample of diffuseRect and emissiveRect
 
 out vec4 frag_color;
 
@@ -43,12 +43,12 @@ float lum(vec3 col)
     return dot(l, col);
 }
 
-void main() 
+void main()
 {
     vec2 tc = vary_fragcoord*0.6+0.2;
     tc.y -= 0.1; // HACK - nudge exposure sample down a little bit to favor ground over sky
     vec3 c = texture(diffuseRect, tc).rgb;
-    
+
     vec4  norm         = texture(normalMap, tc);
 
     if (!GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_HDRI) &&
diff --git a/indra/newview/app_settings/shaders/class1/deferred/moonF.glsl b/indra/newview/app_settings/shaders/class1/deferred/moonF.glsl
index 6ef556d7e8..585de99e1d 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/moonF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/moonF.glsl
@@ -1,28 +1,28 @@
-/** 
+/**
  * @file class1\deferred\moonF.glsl
  *
  * $LicenseInfo:firstyear=2005&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2005, 2020 Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
- 
+
 /*[EXTRA_CODE_HERE]*/
 
 out vec4 frag_data[4];
@@ -34,7 +34,7 @@ uniform sampler2D diffuseMap;
 
 in vec2 vary_texcoord0;
 
-void main() 
+void main()
 {
     // Restore Pre-EEP alpha fade moon near horizon
     float fade = 1.0;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbrShadowAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbrShadowAlphaMaskF.glsl
index 35b7602569..07a2218db2 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbrShadowAlphaMaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbrShadowAlphaMaskF.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file pbrShadowAlphaMaskF.glsl
  *
  * $LicenseInfo:firstyear=2023&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2023, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -33,7 +33,7 @@ in vec4 vertex_color;
 in vec2 vary_texcoord0;
 uniform float minimum_alpha;
 
-void main() 
+void main()
 {
     float alpha = texture(diffuseMap,vary_texcoord0.xy).a * vertex_color.a;
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl
index d0fc362db9..ae179d3f37 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbralphaV.glsl
@@ -51,8 +51,6 @@ uniform vec4[2] texture_emissive_transform;
 
 out vec3 vary_fragcoord;
 
-uniform float near_clip;
-
 in vec3 position;
 in vec4 diffuse_color;
 in vec3 normal;
@@ -88,7 +86,7 @@ void main()
 #endif
     gl_Position = vert;
 
-    vary_fragcoord.xyz = vert.xyz + vec3(0,0,near_clip);
+    vary_fragcoord.xyz = vert.xyz;
 
     base_color_texcoord = texture_transform(texcoord0, texture_base_color_transform, texture_matrix0);
     normal_texcoord = texture_transform(texcoord0, texture_normal_transform, texture_matrix0);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
index 380d493636..b521081af9 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbropaqueF.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file pbropaqueF.glsl
  *
  * $LicenseInfo:firstyear=2022&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2022, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -28,7 +28,7 @@
 
 #ifndef IS_HUD
 
-// deferred opaque implementation 
+// deferred opaque implementation
 
 uniform sampler2D diffuseMap;  //always in sRGB space
 
@@ -85,7 +85,7 @@ void main()
     float sign = vary_sign;
     vec3 vN = vary_normal;
     vec3 vT = vary_tangent.xyz;
-    
+
     vec3 vB = sign * cross(vN, vT);
     vec3 tnorm = normalize( vNt.x * vT + vNt.y * vB + vNt.z * vN );
 
@@ -95,7 +95,7 @@ void main()
     //   roughness 0.0
     //   metal     0.0
     vec3 spec = texture(specularMap, metallic_roughness_texcoord.xy).rgb;
-    
+
     spec.g *= roughnessFactor;
     spec.b *= metallicFactor;
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbrterrainF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbrterrainF.glsl
index 0de2d348c3..2cb7ff196b 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbrterrainF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbrterrainF.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file class1\deferred\terrainF.glsl
  *
  * $LicenseInfo:firstyear=2023&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2023, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -31,7 +31,7 @@
 #define TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS -3
 
 #if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
-#define TerrainCoord vec4[2]
+#define TerrainCoord vec4[3]
 #elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
 #define TerrainCoord vec2
 #endif
@@ -131,12 +131,16 @@ uniform vec3[4] emissiveColors;
 uniform vec4 minimum_alphas; // PBR alphaMode: MASK, See: mAlphaCutoff, setAlphaCutoff()
 
 #if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+in vec4[10] vary_coords;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
 in vec4[2] vary_coords;
 #endif
 in vec3 vary_position;
 in vec3 vary_normal;
-in vec3 vary_tangent;
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+in vec3 vary_tangents[4];
 flat in float vary_sign;
+#endif
 in vec4 vary_texcoord0;
 in vec4 vary_texcoord1;
 
@@ -144,17 +148,26 @@ void mirrorClip(vec3 position);
 
 float terrain_mix(TerrainMix tm, vec4 tms4);
 
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+// from mikktspace.com
+vec3 mikktspace(vec3 vNt, vec3 vT)
+{
+    vec3 vN = vary_normal;
+
+    vec3 vB = vary_sign * cross(vN, vT);
+    vec3 tnorm = normalize( vNt.x * vT + vNt.y * vB + vNt.z * vN );
+
+    tnorm *= gl_FrontFacing ? 1.0 : -1.0;
+
+    return tnorm;
+}
+#endif
+
 void main()
 {
     // Make sure we clip the terrain if we're in a mirror.
     mirrorClip(vary_position);
 
-#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
-    TerrainCoord terrain_texcoord = vary_coords;
-#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
-    TerrainCoord terrain_texcoord = vary_texcoord0.xy;
-#endif
-
     float alpha1 = texture(alpha_ramp, vary_texcoord0.zw).a;
     float alpha2 = texture(alpha_ramp,vary_texcoord1.xy).a;
     float alphaFinal = texture(alpha_ramp, vary_texcoord1.zw).a;
@@ -182,9 +195,19 @@ void main()
 
     PBRMix pbr_mix = init_pbr_mix();
     PBRMix mix2;
+    TerrainCoord terrain_texcoord;
     switch (tm.type & MIX_X)
     {
     case MIX_X:
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+        terrain_texcoord[0].xy = vary_coords[0].xy;
+        terrain_texcoord[0].zw = vary_coords[0].zw;
+        terrain_texcoord[1].xy = vary_coords[1].xy;
+        terrain_texcoord[1].zw = vary_coords[1].zw;
+        terrain_texcoord[2].xy = vary_coords[2].xy;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+        terrain_texcoord = vary_coords[0].xy;
+#endif
         mix2 = terrain_sample_and_multiply_pbr(
             terrain_texcoord
             , detail_0_base_color
@@ -207,6 +230,9 @@ void main()
             , emissiveColors[0]
 #endif
         );
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        mix2.vNt = mikktspace(mix2.vNt, vary_tangents[0]);
+#endif
         pbr_mix = mix_pbr(pbr_mix, mix2, tm.weight.x);
         break;
     default:
@@ -215,6 +241,15 @@ void main()
     switch (tm.type & MIX_Y)
     {
     case MIX_Y:
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+        terrain_texcoord[0].xy = vary_coords[2].zw;
+        terrain_texcoord[0].zw = vary_coords[3].xy;
+        terrain_texcoord[1].xy = vary_coords[3].zw;
+        terrain_texcoord[1].zw = vary_coords[4].xy;
+        terrain_texcoord[2].xy = vary_coords[4].zw;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+        terrain_texcoord = vary_coords[0].zw;
+#endif
         mix2 = terrain_sample_and_multiply_pbr(
             terrain_texcoord
             , detail_1_base_color
@@ -237,6 +272,9 @@ void main()
             , emissiveColors[1]
 #endif
         );
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        mix2.vNt = mikktspace(mix2.vNt, vary_tangents[1]);
+#endif
         pbr_mix = mix_pbr(pbr_mix, mix2, tm.weight.y);
         break;
     default:
@@ -245,6 +283,15 @@ void main()
     switch (tm.type & MIX_Z)
     {
     case MIX_Z:
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+        terrain_texcoord[0].xy = vary_coords[5].xy;
+        terrain_texcoord[0].zw = vary_coords[5].zw;
+        terrain_texcoord[1].xy = vary_coords[6].xy;
+        terrain_texcoord[1].zw = vary_coords[6].zw;
+        terrain_texcoord[2].xy = vary_coords[7].xy;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+        terrain_texcoord = vary_coords[1].xy;
+#endif
         mix2 = terrain_sample_and_multiply_pbr(
             terrain_texcoord
             , detail_2_base_color
@@ -267,6 +314,9 @@ void main()
             , emissiveColors[2]
 #endif
         );
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        mix2.vNt = mikktspace(mix2.vNt, vary_tangents[2]);
+#endif
         pbr_mix = mix_pbr(pbr_mix, mix2, tm.weight.z);
         break;
     default:
@@ -275,6 +325,15 @@ void main()
     switch (tm.type & MIX_W)
     {
     case MIX_W:
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+        terrain_texcoord[0].xy = vary_coords[7].zw;
+        terrain_texcoord[0].zw = vary_coords[8].xy;
+        terrain_texcoord[1].xy = vary_coords[8].zw;
+        terrain_texcoord[1].zw = vary_coords[9].xy;
+        terrain_texcoord[2].xy = vary_coords[9].zw;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+        terrain_texcoord = vary_coords[1].zw;
+#endif
         mix2 = terrain_sample_and_multiply_pbr(
             terrain_texcoord
             , detail_3_base_color
@@ -297,6 +356,9 @@ void main()
             , emissiveColors[3]
 #endif
         );
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+        mix2.vNt = mikktspace(mix2.vNt, vary_tangents[3]);
+#endif
         pbr_mix = mix_pbr(pbr_mix, mix2, tm.weight.w);
         break;
     default:
@@ -311,20 +373,12 @@ void main()
     float base_color_factor_alpha = terrain_mix(tm, vec4(baseColorFactors[0].z, baseColorFactors[1].z, baseColorFactors[2].z, baseColorFactors[3].z));
 
 #if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
-    // from mikktspace.com
-    vec3 vNt = pbr_mix.vNt;
-    vec3 vN = vary_normal;
-    vec3 vT = vary_tangent.xyz;
-    
-    vec3 vB = vary_sign * cross(vN, vT);
-    vec3 tnorm = normalize( vNt.x * vT + vNt.y * vB + vNt.z * vN );
-
-    tnorm *= gl_FrontFacing ? 1.0 : -1.0;
+    vec3 tnorm = normalize(pbr_mix.vNt);
 #else
     vec3 tnorm = vary_normal;
-    tnorm *= gl_FrontFacing ? 1.0 : -1.0;
 #endif
-   
+    tnorm *= gl_FrontFacing ? 1.0 : -1.0;
+
 
 #if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_EMISSIVE)
 #define mix_emissive pbr_mix.emissive
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbrterrainUtilF.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbrterrainUtilF.glsl
index 04eb135c90..d1a380bf94 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbrterrainUtilF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbrterrainUtilF.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file class1\deferred\pbrterrainUtilF.glsl
  *
  * $LicenseInfo:firstyear=2023&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2023, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -233,17 +233,12 @@ float terrain_mix(TerrainMix tm, vec4 tms4)
 // Triplanar mapping
 
 // Pre-transformed texture coordinates for each axial uv slice (Packing: xy, yz, (-x)z, unused)
-#define TerrainCoord vec4[2]
+#define TerrainCoord vec4[3]
 
-vec2 _t_uv(vec2 uv_unflipped, float sign_or_zero)
+// If sign_or_zero is positive, use uv_unflippped, otherwise use uv_flipped
+vec2 _t_uv(vec2 uv_unflipped, vec2 uv_flipped, float sign_or_zero)
 {
-    // Handle case where sign is 0
-    float sign = (2.0*sign_or_zero) + 1.0;
-    sign /= abs(sign);
-    // If the vertex normal is negative, flip the texture back
-    // right-side up.
-    vec2 uv = uv_unflipped * vec2(sign, 1);
-    return uv;
+    return mix(uv_flipped, uv_unflipped, max(0.0, sign_or_zero));
 }
 
 vec3 _t_normal_post_1(vec3 vNt0, float sign_or_zero)
@@ -298,9 +293,9 @@ PBRMix terrain_sample_pbr(
 {
     PBRMix mix = init_pbr_mix();
 
-#define get_uv_x() _t_uv(terrain_coord[0].zw, sign(vary_vertex_normal.x))
-#define get_uv_y() _t_uv(terrain_coord[1].xy, sign(vary_vertex_normal.y))
-#define get_uv_z() _t_uv(terrain_coord[0].xy, sign(vary_vertex_normal.z))
+#define get_uv_x() _t_uv(terrain_coord[0].zw, terrain_coord[1].zw, sign(vary_vertex_normal.x))
+#define get_uv_y() _t_uv(terrain_coord[1].xy, terrain_coord[2].xy, sign(vary_vertex_normal.y))
+#define get_uv_z() _t_uv(terrain_coord[0].xy, vec2(0),             sign(vary_vertex_normal.z))
     switch (tw.type & SAMPLE_X)
     {
     case SAMPLE_X:
@@ -379,7 +374,7 @@ PBRMix terrain_sample_pbr(
     default:
         break;
     }
-    
+
     return mix;
 }
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/pbrterrainV.glsl b/indra/newview/app_settings/shaders/class1/deferred/pbrterrainV.glsl
index ed52297314..f8e826bbdb 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/pbrterrainV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/pbrterrainV.glsl
@@ -23,6 +23,11 @@
  * $/LicenseInfo$
  */
 
+#define TERRAIN_PBR_DETAIL_EMISSIVE 0
+#define TERRAIN_PBR_DETAIL_OCCLUSION -1
+#define TERRAIN_PBR_DETAIL_NORMAL -2
+#define TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS -3
+
 uniform mat3 normal_matrix;
 uniform mat4 texture_matrix0;
 uniform mat4 modelview_matrix;
@@ -34,21 +39,25 @@ in vec4 tangent;
 in vec4 diffuse_color;
 in vec2 texcoord1;
 
-#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
-out vec4[2] vary_coords;
-#endif
 out vec3 vary_vertex_normal; // Used by pbrterrainUtilF.glsl
 out vec3 vary_normal;
-out vec3 vary_tangent;
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+out vec3 vary_tangents[4];
 flat out float vary_sign;
+#endif
 out vec4 vary_texcoord0;
 out vec4 vary_texcoord1;
+#if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
+out vec4[10] vary_coords;
+#elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
+out vec4[2] vary_coords;
+#endif
 out vec3 vary_position;
 
-// *HACK: tangent_space_transform should use texture_normal_transform, or maybe
-// we shouldn't use tangent_space_transform at all. See the call to
-// tangent_space_transform below.
-uniform vec4[2] texture_base_color_transform;
+// *HACK: Each material uses only one texture transform, but the KHR texture
+// transform spec allows handling texture transforms separately for each
+// individual texture info.
+uniform vec4[5] terrain_texture_transforms;
 
 vec2 terrain_texture_transform(vec2 vertex_texcoord, vec4[2] khr_gltf_transform);
 vec3 terrain_tangent_space_transform(vec4 vertex_tangent, vec3 vertex_normal, vec4[2] khr_gltf_transform);
@@ -63,31 +72,101 @@ void main()
     vary_vertex_normal = normal;
     vec3 t = normal_matrix * tangent.xyz;
 
-    vary_tangent = normalize(t);
-    // *TODO: Decide if we want this. It may be better to just calculate the
-    // tangents on-the-fly in the fragment shader, due to the subtleties of the
-    // effect of triplanar mapping on UVs.
-    // *HACK: Should be using texture_normal_transform here. The KHR texture
-    // transform spec requires handling texture transforms separately for each
-    // individual texture.
-    vary_tangent = normalize(terrain_tangent_space_transform(vec4(t, tangent.w), n, texture_base_color_transform));
+#if (TERRAIN_PBR_DETAIL >= TERRAIN_PBR_DETAIL_NORMAL)
+    {
+        vec4[2] ttt;
+        // material 1
+        ttt[0].xyz = terrain_texture_transforms[0].xyz;
+        ttt[1].x = terrain_texture_transforms[0].w;
+        ttt[1].y = terrain_texture_transforms[1].x;
+        vary_tangents[0] = normalize(terrain_tangent_space_transform(vec4(t, tangent.w), n, ttt));
+        // material 2
+        ttt[0].xyz = terrain_texture_transforms[1].yzw;
+        ttt[1].xy = terrain_texture_transforms[2].xy;
+        vary_tangents[1] = normalize(terrain_tangent_space_transform(vec4(t, tangent.w), n, ttt));
+        // material 3
+        ttt[0].xy = terrain_texture_transforms[2].zw;
+        ttt[0].z = terrain_texture_transforms[3].x;
+        ttt[1].xy = terrain_texture_transforms[3].yz;
+        vary_tangents[2] = normalize(terrain_tangent_space_transform(vec4(t, tangent.w), n, ttt));
+        // material 4
+        ttt[0].x = terrain_texture_transforms[3].w;
+        ttt[0].yz = terrain_texture_transforms[4].xy;
+        ttt[1].xy = terrain_texture_transforms[4].zw;
+        vary_tangents[3] = normalize(terrain_tangent_space_transform(vec4(t, tangent.w), n, ttt));
+    }
+
     vary_sign = tangent.w;
+#endif
     vary_normal = normalize(n);
 
     // Transform and pass tex coords
-    // *HACK: texture_base_color_transform is used for all of these here, but
-    // the KHR texture transform spec requires handling texture transforms
-    // separately for each individual texture.
+    {
+        vec4[2] ttt;
 #if TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 3
-    // xy
-    vary_coords[0].xy = terrain_texture_transform(position.xy, texture_base_color_transform);
-    // yz
-    vary_coords[0].zw = terrain_texture_transform(position.yz, texture_base_color_transform);
-    // (-x)z
-    vary_coords[1].xy = terrain_texture_transform(position.xz * vec2(-1, 1), texture_base_color_transform);
+// Don't care about upside-down (transform_xy_flipped())
+#define transform_xy()             terrain_texture_transform(position.xy,               ttt)
+#define transform_yz()             terrain_texture_transform(position.yz,               ttt)
+#define transform_negx_z()         terrain_texture_transform(position.xz * vec2(-1, 1), ttt)
+#define transform_yz_flipped()     terrain_texture_transform(position.yz * vec2(-1, 1), ttt)
+#define transform_negx_z_flipped() terrain_texture_transform(position.xz,               ttt)
+        // material 1
+        ttt[0].xyz = terrain_texture_transforms[0].xyz;
+        ttt[1].x = terrain_texture_transforms[0].w;
+        ttt[1].y = terrain_texture_transforms[1].x;
+        vary_coords[0].xy = transform_xy();
+        vary_coords[0].zw = transform_yz();
+        vary_coords[1].xy = transform_negx_z();
+        vary_coords[1].zw = transform_yz_flipped();
+        vary_coords[2].xy = transform_negx_z_flipped();
+        // material 2
+        ttt[0].xyz = terrain_texture_transforms[1].yzw;
+        ttt[1].xy = terrain_texture_transforms[2].xy;
+        vary_coords[2].zw = transform_xy();
+        vary_coords[3].xy = transform_yz();
+        vary_coords[3].zw = transform_negx_z();
+        vary_coords[4].xy = transform_yz_flipped();
+        vary_coords[4].zw = transform_negx_z_flipped();
+        // material 3
+        ttt[0].xy = terrain_texture_transforms[2].zw;
+        ttt[0].z = terrain_texture_transforms[3].x;
+        ttt[1].xy = terrain_texture_transforms[3].yz;
+        vary_coords[5].xy = transform_xy();
+        vary_coords[5].zw = transform_yz();
+        vary_coords[6].xy = transform_negx_z();
+        vary_coords[6].zw = transform_yz_flipped();
+        vary_coords[7].xy = transform_negx_z_flipped();
+        // material 4
+        ttt[0].x = terrain_texture_transforms[3].w;
+        ttt[0].yz = terrain_texture_transforms[4].xy;
+        ttt[1].xy = terrain_texture_transforms[4].zw;
+        vary_coords[7].zw = transform_xy();
+        vary_coords[8].xy = transform_yz();
+        vary_coords[8].zw = transform_negx_z();
+        vary_coords[9].xy = transform_yz_flipped();
+        vary_coords[9].zw = transform_negx_z_flipped();
 #elif TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT == 1
-    vary_texcoord0.xy = terrain_texture_transform(position.xy, texture_base_color_transform);
+        // material 1
+        ttt[0].xyz = terrain_texture_transforms[0].xyz;
+        ttt[1].x = terrain_texture_transforms[0].w;
+        ttt[1].y = terrain_texture_transforms[1].x;
+        vary_coords[0].xy = terrain_texture_transform(position.xy, ttt);
+        // material 2
+        ttt[0].xyz = terrain_texture_transforms[1].yzw;
+        ttt[1].xy = terrain_texture_transforms[2].xy;
+        vary_coords[0].zw = terrain_texture_transform(position.xy, ttt);
+        // material 3
+        ttt[0].xy = terrain_texture_transforms[2].zw;
+        ttt[0].z = terrain_texture_transforms[3].x;
+        ttt[1].xy = terrain_texture_transforms[3].yz;
+        vary_coords[1].xy = terrain_texture_transform(position.xy, ttt);
+        // material 4
+        ttt[0].x = terrain_texture_transforms[3].w;
+        ttt[0].yz = terrain_texture_transforms[4].xy;
+        ttt[1].xy = terrain_texture_transforms[4].zw;
+        vary_coords[1].zw = terrain_texture_transform(position.xy, ttt);
 #endif
+    }
 
     vec4 tc = vec4(texcoord1,0,1);
     vary_texcoord0.zw = tc.xy;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/screenSpaceReflUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/screenSpaceReflUtil.glsl
index a33c4cc58b..6791fe44d9 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/screenSpaceReflUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/screenSpaceReflUtil.glsl
@@ -27,11 +27,11 @@
 
 float random (vec2 uv) 
 {
-    return 0.;
+    return 0.f;
 }
 
 float tapScreenSpaceReflection(int totalSamples, vec2 tc, vec3 viewPos, vec3 n, inout vec4 collectedColor, sampler2D source, float glossiness)
 {
     collectedColor = vec4(0);
-    return 0.;
+    return 0.f;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl
index 9db8f461dd..f208ac746b 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl
@@ -27,8 +27,6 @@
 
 out vec4 frag_color;
 
-uniform sampler2D diffuseMap;
-
 in vec4 post_pos;
 in float target_pos_x;
 in vec4 vertex_color;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
index 16cc7cfbbc..6f7bd2bf3c 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl
@@ -24,7 +24,6 @@
  */
 
 uniform sampler2D   normalMap;
-uniform sampler2D   depthMap;
 
 #if defined(SUN_SHADOW)
 uniform sampler2DShadow shadowMap0;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl b/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl
index 785c748234..41e42b5173 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file class1/deferred/skyF.glsl
  *
  * $LicenseInfo:firstyear=2005&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2005, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -99,9 +99,9 @@ void main()
     else
 #endif
     {
-        // Potential Fill-rate optimization.  Add cloud calculation 
-        // back in and output alpha of 0 (so that alpha culling kills 
-        // the fragment) if the sky wouldn't show up because the clouds 
+        // Potential Fill-rate optimization.  Add cloud calculation
+        // back in and output alpha of 0 (so that alpha culling kills
+        // the fragment) if the sky wouldn't show up because the clouds
         // are fully opaque.
 
         color = vary_HazeColor;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl b/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
index 24d2db2183..ea00d240df 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/skyV.glsl
@@ -102,7 +102,7 @@ void main()
 
     // Initialize temp variables
     vec3 sunlight = (sun_up_factor == 1) ? sunlight_color : moonlight_color * 0.7; //magic 0.7 to match legacy color
-    
+
     // Sunlight attenuation effect (hue and brightness) due to atmosphere
     // this is used later for sunlight modulation at various altitudes
     vec3 light_atten = (blue_density + vec3(haze_density * 0.25)) * (density_multiplier * max_y);
@@ -152,7 +152,7 @@ void main()
     sunlight *= max(0.0, (1. - cloud_shadow));
 
     // Haze color below cloud
-    vec3 add_below_cloud = (blue_horizon * blue_weight * (sunlight + ambient) 
+    vec3 add_below_cloud = (blue_horizon * blue_weight * (sunlight + ambient)
                          + (haze_horizon * haze_weight) * (sunlight * haze_glow + ambient));
 
     // Attenuate cloud color by atmosphere
diff --git a/indra/newview/app_settings/shaders/class1/deferred/terrainF.glsl b/indra/newview/app_settings/shaders/class1/deferred/terrainF.glsl
index 5f598f84a7..1fd31e0546 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/terrainF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/terrainF.glsl
@@ -1,28 +1,28 @@
-/** 
+/**
  * @file class1\deferred\terrainF.glsl
  *
  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2007, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
- 
+
 /*[EXTRA_CODE_HERE]*/
 
 out vec4 frag_data[4];
@@ -44,7 +44,7 @@ void main()
 {
     mirrorClip(pos);
     /// Note: This should duplicate the blending functionality currently used for the terrain rendering.
-    
+
     vec4 color0 = texture(detail_0, vary_texcoord0.xy);
     vec4 color1 = texture(detail_1, vary_texcoord0.xy);
     vec4 color2 = texture(detail_2, vary_texcoord0.xy);
@@ -54,10 +54,10 @@ void main()
     float alpha2 = texture(alpha_ramp,vary_texcoord1.xy).a;
     float alphaFinal = texture(alpha_ramp, vary_texcoord1.zw).a;
     vec4 outColor = mix( mix(color3, color2, alpha2), mix(color1, color0, alpha1), alphaFinal );
-   
-    outColor.a = 0.0; // yes, downstream atmospherics 
-    
-    frag_data[0] = outColor;
+
+    outColor.a = 0.0; // yes, downstream atmospherics
+
+    frag_data[0] = max(outColor, vec4(0));
     frag_data[1] = vec4(0.0,0.0,0.0,-1.0);
     vec3 nvn = normalize(vary_normal);
     frag_data[2] = vec4(nvn.xyz, GBUFFER_FLAG_HAS_ATMOS);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/terrainV.glsl b/indra/newview/app_settings/shaders/class1/deferred/terrainV.glsl
index b4ab7cd169..7fc0e98513 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/terrainV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/terrainV.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file class1\environment\terrainV.glsl
  *
  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2007, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -44,15 +44,15 @@ uniform vec4 object_plane_t;
 vec2 texgen_object(vec4 vpos, mat4 mat, vec4 tp0, vec4 tp1)
 {
     vec4 tcoord;
-    
+
     tcoord.x = dot(vpos, tp0);
     tcoord.y = dot(vpos, tp1);
     tcoord.z = 0;
     tcoord.w = 1;
 
-    tcoord = mat * tcoord; 
-    
-    return tcoord.xy; 
+    tcoord = mat * tcoord;
+
+    return tcoord.xy;
 }
 
 void main()
@@ -65,12 +65,12 @@ void main()
     pos = (modelview_matrix*pre_pos).xyz;
 
     vary_normal = normalize(normal_matrix * normal);
-    
+
     // Transform and pass tex coords
     vary_texcoord0.xy = texgen_object(vec4(position, 1.0), texture_matrix0, object_plane_s, object_plane_t);
-    
+
     vec4 t = vec4(texcoord1,0,1);
-    
+
     vary_texcoord0.zw = t.xy;
     vary_texcoord1.xy = t.xy-vec2(2.0, 0.0);
     vary_texcoord1.zw = t.xy-vec2(1.0, 0.0);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/textureUtilV.glsl b/indra/newview/app_settings/shaders/class1/deferred/textureUtilV.glsl
index 7c02cb9d4a..767416d564 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/textureUtilV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/textureUtilV.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file class1/deferred/textureUtilV.glsl
  *
  * $LicenseInfo:firstyear=2023&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2023, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -48,6 +48,7 @@ vec2 khr_texture_transform(vec2 texcoord, vec2 scale, float rotation, vec2 offse
     return (transform * vec3(texcoord, 1)).xy;
 }
 
+// A texture transform function for PBR materials applied to shape prims/Collada model prims
 // vertex_texcoord - The UV texture coordinates sampled from the vertex at
 //     runtime. Per SL convention, this is in a right-handed UV coordinate
 //     system. Collada models also have right-handed UVs.
@@ -134,7 +135,7 @@ vec3 tangent_space_transform(vec4 vertex_tangent, vec3 vertex_normal, vec4[2] kh
     return (weights.x * vertex_binormal.xyz) + (weights.y * vertex_tangent.xyz);
 }
 
-// Similar to tangent_space_transform but no no texture animation support.
+// Similar to tangent_space_transform but no texture animation support.
 vec3 terrain_tangent_space_transform(vec4 vertex_tangent, vec3 vertex_normal, vec4[2] khr_gltf_transform)
 {
     // Immediately convert to left-handed coordinate system ((0,1) -> (0, -1))
diff --git a/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl b/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl
index 7e1d906878..d7f6d20547 100644
--- a/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/srgbF.glsl
@@ -23,8 +23,6 @@
  * $/LicenseInfo$
  */
 
- uniform sampler2D exposureMap;
-
 vec3 srgb_to_linear(vec3 cs)
 {
     vec3 low_range = cs / vec3(12.92);
diff --git a/indra/newview/app_settings/shaders/class1/gltf/pbrmetallicroughnessF.glsl b/indra/newview/app_settings/shaders/class1/gltf/pbrmetallicroughnessF.glsl
new file mode 100644
index 0000000000..ac4ff50552
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/gltf/pbrmetallicroughnessF.glsl
@@ -0,0 +1,325 @@
+/**
+ * @file pbrmetallicroughnessF.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2022, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+
+// GLTF pbrMetallicRoughness implementation
+
+uniform int gltf_material_id;
+
+vec3 emissiveColor = vec3(0,0,0);
+float metallicFactor = 1.0;
+float roughnessFactor = 1.0;
+float minimum_alpha = -1.0;
+
+layout (std140) uniform GLTFMaterials
+{
+    // see pbrmetallicroughnessV.glsl for packing
+    vec4 gltf_material_data[MAX_UBO_VEC4S];
+};
+
+void unpackMaterial()
+{
+    if (gltf_material_id > -1)
+    {
+        int idx = gltf_material_id*12;
+        emissiveColor = gltf_material_data[idx+10].rgb;
+        roughnessFactor = gltf_material_data[idx+11].g;
+        metallicFactor = gltf_material_data[idx+11].b;
+        minimum_alpha -= gltf_material_data[idx+11].a;
+    }
+}
+
+// ==================================
+// needed by all variants
+// ==================================
+uniform sampler2D diffuseMap;  //always in sRGB space
+uniform sampler2D emissiveMap;
+in vec3 vary_position;
+in vec4 vertex_color;
+in vec2 base_color_uv;
+in vec2 emissive_uv;
+
+void mirrorClip(vec3 pos);
+vec3 linear_to_srgb(vec3 c);
+vec3 srgb_to_linear(vec3 c);
+// ==================================
+
+
+// ==================================
+// needed by all lit variants
+// ==================================
+#ifndef UNLIT
+uniform sampler2D normalMap;
+uniform sampler2D metallicRoughnessMap;
+uniform sampler2D occlusionMap;
+in vec3 vary_normal;
+in vec3 vary_tangent;
+flat in float vary_sign;
+in vec2 normal_uv;
+in vec2 metallic_roughness_uv;
+in vec2 occlusion_uv;
+#endif
+// ==================================
+
+
+// ==================================
+// needed by all alpha variants
+// ==================================
+#ifdef ALPHA_BLEND
+in vec3 vary_fragcoord;
+uniform vec4 clipPlane;
+uniform float clipSign;
+void waterClip(vec3 pos);
+void calcAtmosphericVarsLinear(vec3 inPositionEye, vec3 norm, vec3 light_dir, out vec3 sunlit, out vec3 amblit, out vec3 atten, out vec3 additive);
+vec4 applySkyAndWaterFog(vec3 pos, vec3 additive, vec3 atten, vec4 color);
+#endif
+// ==================================
+
+
+// ==================================
+// needed by lit alpha
+// ==================================
+#if defined(ALPHA_BLEND) && !defined(UNLIT)
+
+#ifdef HAS_SUN_SHADOW
+uniform sampler2D lightMap;
+uniform vec2 screen_res;
+#endif
+
+// Lights
+// See: LLRender::syncLightState()
+uniform vec4 light_position[8];
+uniform vec3 light_direction[8]; // spot direction
+uniform vec4 light_attenuation[8]; // linear, quadratic, is omni, unused, See: LLPipeline::setupHWLights() and syncLightState()
+uniform vec3 light_diffuse[8];
+uniform vec2 light_deferred_attenuation[8]; // light size and falloff
+
+uniform int sun_up_factor;
+uniform vec3 sun_dir;
+uniform vec3 moon_dir;
+
+void calcHalfVectors(vec3 lv, vec3 n, vec3 v, out vec3 h, out vec3 l, out float nh, out float nl, out float nv, out float vh, out float lightDist);
+float calcLegacyDistanceAttenuation(float distance, float falloff);
+float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen);
+void sampleReflectionProbes(inout vec3 ambenv, inout vec3 glossenv,
+        vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent, vec3 amblit_linear);
+
+void calcDiffuseSpecular(vec3 baseColor, float metallic, inout vec3 diffuseColor, inout vec3 specularColor);
+
+vec3 pbrBaseLight(vec3 diffuseColor,
+                  vec3 specularColor,
+                  float metallic,
+                  vec3 pos,
+                  vec3 norm,
+                  float perceptualRoughness,
+                  vec3 light_dir,
+                  vec3 sunlit,
+                  float scol,
+                  vec3 radiance,
+                  vec3 irradiance,
+                  vec3 colorEmissive,
+                  float ao,
+                  vec3 additive,
+                  vec3 atten);
+
+vec3 pbrCalcPointLightOrSpotLight(vec3 diffuseColor, vec3 specularColor,
+                    float perceptualRoughness,
+                    float metallic,
+                    vec3 n, // normal
+                    vec3 p, // pixel position
+                    vec3 v, // view vector (negative normalized pixel position)
+                    vec3 lp, // light position
+                    vec3 ld, // light direction (for spotlights)
+                    vec3 lightColor,
+                    float lightSize, float falloff, float is_pointlight, float ambiance);
+
+#endif
+// ==================================
+
+
+// ==================================
+// output definition
+// ==================================
+#if defined(ALPHA_BLEND) || defined(UNLIT)
+out vec4 frag_color;
+#else
+out vec4 frag_data[4];
+#endif
+// ==================================
+
+
+void main()
+{
+    unpackMaterial();
+// ==================================
+// all variants
+//   mirror clip
+//   base color
+//   masking
+//   emissive
+// ==================================
+    vec3 pos = vary_position;
+    mirrorClip(pos);
+
+#ifdef ALPHA_BLEND
+    //waterClip(pos);
+#endif
+
+    vec4 basecolor = texture(diffuseMap, base_color_uv.xy).rgba;
+    basecolor.rgb = srgb_to_linear(basecolor.rgb);
+    basecolor *= vertex_color;
+
+    if (basecolor.a < minimum_alpha)
+    {
+        discard;
+    }
+
+    vec3 emissive = emissiveColor;
+    emissive *= srgb_to_linear(texture(emissiveMap, emissive_uv.xy).rgb);
+// ==================================
+
+// ==================================
+// all lit variants
+//   prepare norm
+//   prepare orm
+// ==================================
+#ifndef UNLIT
+    // from mikktspace.com
+    vec3 vNt = texture(normalMap, normal_uv.xy).xyz*2.0-1.0;
+    float sign = vary_sign;
+    vec3 vN = vary_normal;
+    vec3 vT = vary_tangent.xyz;
+
+    vec3 vB = sign * cross(vN, vT);
+    vec3 norm = normalize( vNt.x * vT + vNt.y * vB + vNt.z * vN );
+    norm *= gl_FrontFacing ? 1.0 : -1.0;
+
+    // RGB = Occlusion, Roughness, Metal
+    // default values, see LLViewerTexture::sDefaultPBRORMImagep
+    //   occlusion 1.0
+    //   roughness 0.0
+    //   metal     0.0
+    vec3 orm = texture(metallicRoughnessMap, metallic_roughness_uv.xy).rgb;
+    orm.r = texture(occlusionMap, occlusion_uv.xy).r;
+    orm.g *= roughnessFactor;
+    orm.b *= metallicFactor;
+#endif
+// ==================================
+
+// ==================================
+// non alpha output
+// ==================================
+#ifndef ALPHA_BLEND
+#ifdef UNLIT
+    vec4 color = basecolor;
+    color.rgb += emissive.rgb;
+    frag_color = color;
+#else
+    frag_data[0] = max(vec4(basecolor.rgb, 0.0), vec4(0));
+    frag_data[1] = max(vec4(orm.rgb,0.0), vec4(0));
+    frag_data[2] = vec4(norm, GBUFFER_FLAG_HAS_PBR);
+    frag_data[3] = max(vec4(emissive,0), vec4(0));
+#endif
+#endif
+
+
+// ==================================
+// alpha implementation
+// ==================================
+#ifdef ALPHA_BLEND
+
+    float scol = 1.0;
+    vec3 sunlit;
+    vec3 amblit;
+    vec3 additive;
+    vec3 atten;
+
+    vec3  light_dir;
+
+#ifdef UNLIT
+    light_dir = vec3(0,0,1);
+    vec3 norm = vec3(0,0,1);
+#else
+    light_dir = (sun_up_factor == 1) ? sun_dir : moon_dir;
+#endif
+
+    calcAtmosphericVarsLinear(pos.xyz, norm, light_dir, sunlit, amblit, additive, atten);
+
+#ifndef UNLIT
+    vec3 sunlit_linear = srgb_to_linear(sunlit);
+
+    vec2 frag = vary_fragcoord.xy/vary_fragcoord.z*0.5+0.5;
+
+#ifdef HAS_SUN_SHADOW
+    scol = sampleDirectionalShadow(pos.xyz, norm.xyz, frag);
+#endif
+
+    float perceptualRoughness = orm.g * roughnessFactor;
+    float metallic = orm.b * metallicFactor;
+
+    // PBR IBL
+    float gloss      = 1.0 - perceptualRoughness;
+    vec3  irradiance = vec3(0);
+    vec3  radiance  = vec3(0);
+    sampleReflectionProbes(irradiance, radiance, vary_position.xy*0.5+0.5, pos.xyz, norm.xyz, gloss, true, amblit);
+
+    vec3 diffuseColor;
+    vec3 specularColor;
+    calcDiffuseSpecular(basecolor.rgb, metallic, diffuseColor, specularColor);
+
+    vec3 v = -normalize(pos.xyz);
+
+    vec3 color = pbrBaseLight(diffuseColor, specularColor, metallic, v, norm.xyz, perceptualRoughness, light_dir, sunlit_linear, scol, radiance, irradiance, emissive, orm.r, additive, atten);
+
+    vec3 light = vec3(0);
+
+    // Punctual lights
+#define LIGHT_LOOP(i) light += pbrCalcPointLightOrSpotLight(diffuseColor, specularColor, perceptualRoughness, metallic, norm.xyz, pos.xyz, v, light_position[i].xyz, light_direction[i].xyz, light_diffuse[i].rgb, light_deferred_attenuation[i].x, light_deferred_attenuation[i].y, light_attenuation[i].z, light_attenuation[i].w);
+
+    LIGHT_LOOP(1)
+    LIGHT_LOOP(2)
+    LIGHT_LOOP(3)
+    LIGHT_LOOP(4)
+    LIGHT_LOOP(5)
+    LIGHT_LOOP(6)
+    LIGHT_LOOP(7)
+
+    color.rgb += light.rgb;
+
+    color.rgb = applySkyAndWaterFog(pos.xyz, additive, atten, vec4(color, 1.0)).rgb;
+
+    float a = basecolor.a*vertex_color.a;
+
+    frag_color = max(vec4(color.rgb,a), vec4(0));
+#else // UNLIT
+    vec4 color = basecolor;
+    color.rgb += emissive.rgb;
+    frag_color = color;
+#endif
+#endif  // ALPHA_BLEND
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/gltf/pbrmetallicroughnessV.glsl b/indra/newview/app_settings/shaders/class1/gltf/pbrmetallicroughnessV.glsl
new file mode 100644
index 0000000000..6a628bc852
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/gltf/pbrmetallicroughnessV.glsl
@@ -0,0 +1,330 @@
+/**
+ * @file pbrmetallicroughnessV.glsl
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2022, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+// GLTF pbrMetallicRoughness implementation
+
+uniform mat4 modelview_matrix;
+uniform mat4 projection_matrix;
+
+#ifdef MULTI_UV
+in vec2 texcoord1;
+int base_color_texcoord = 0;
+int emissive_texcoord = 0;
+#ifndef UNLIT
+int normal_texcoord = 0;
+int metallic_roughness_texcoord = 0;
+int occlusion_texcoord = 0;
+#endif
+#endif
+
+uniform int gltf_material_id;
+
+layout (std140) uniform GLTFMaterials
+{
+    // index by gltf_material_id*12
+
+    // [gltf_material_id + [0-1]] -  base color transform
+    // [gltf_material_id + [2-3]] -  normal transform
+    // [gltf_material_id + [4-5]] -  metallic roughness transform
+    // [gltf_material_id + [6-7]] -  emissive transform
+    // [gltf_material_id + [8-9]] -  occlusion transform
+    // [gltf_material_id + 10]    -  emissive factor
+    // [gltf_material_id + 11]    -  .r unused, .g roughness, .b metalness, .a minimum alpha
+
+    // Transforms are packed as follows
+    // packed[0] = vec4(scale.x, scale.y, rotation, offset.x)
+    // packed[1] = vec4(mScale.y, texcoord, 0, 0)
+    vec4 gltf_material_data[MAX_UBO_VEC4S];
+};
+
+vec4[2] texture_base_color_transform;
+vec4[2] texture_normal_transform;
+vec4[2] texture_metallic_roughness_transform;
+vec4[2] texture_emissive_transform;
+vec4[2] texture_occlusion_transform;
+
+void unpackTextureTransforms()
+{
+    if (gltf_material_id != -1)
+    {
+        int idx = gltf_material_id*12;
+
+        texture_base_color_transform[0] = gltf_material_data[idx+0];
+        texture_base_color_transform[1] = gltf_material_data[idx+1];
+
+        texture_normal_transform[0] = gltf_material_data[idx+2];
+        texture_normal_transform[1] = gltf_material_data[idx+3];
+
+        texture_metallic_roughness_transform[0] = gltf_material_data[idx+4];
+        texture_metallic_roughness_transform[1] = gltf_material_data[idx+5];
+
+        texture_emissive_transform[0] = gltf_material_data[idx+6];
+        texture_emissive_transform[1] = gltf_material_data[idx+7];
+
+        texture_occlusion_transform[0] = gltf_material_data[idx+8];
+        texture_occlusion_transform[1] = gltf_material_data[idx+9];
+
+#ifdef MULTI_UV
+        base_color_texcoord = int(gltf_material_data[idx+1].g);
+        emissive_texcoord = int(gltf_material_data[idx+7].g);
+#ifndef UNLIT
+        normal_texcoord = int(gltf_material_data[idx+3].g);
+        metallic_roughness_texcoord = int(gltf_material_data[idx+5].g);
+        occlusion_texcoord = int(gltf_material_data[idx+9].g);
+#endif
+#endif
+    }
+    else
+    {
+        texture_base_color_transform[0] = vec4(1.0, 1.0, 0.0, 0.0);
+        texture_base_color_transform[1] = vec4(0.0, 0.0, 0.0, 0.0);
+
+        texture_normal_transform[0] = vec4(1.0, 1.0, 0.0, 0.0);
+        texture_normal_transform[1] = vec4(0.0, 0.0, 0.0, 0.0);
+
+        texture_metallic_roughness_transform[0] = vec4(1.0, 1.0, 0.0, 0.0);
+        texture_metallic_roughness_transform[1] = vec4(0.0, 0.0, 0.0, 0.0);
+
+        texture_emissive_transform[0] = vec4(1.0, 1.0, 0.0, 0.0);
+        texture_emissive_transform[1] = vec4(0.0, 0.0, 0.0, 0.0);
+
+        texture_occlusion_transform[0] = vec4(1.0, 1.0, 0.0, 0.0);
+        texture_occlusion_transform[1] = vec4(0.0, 0.0, 0.0, 0.0);
+    }
+}
+
+
+in vec3 position;
+in vec4 diffuse_color;
+in vec2 texcoord0;
+out vec2 base_color_uv;
+out vec2 emissive_uv;
+out vec4 vertex_color;
+out vec3 vary_position;
+
+#ifndef UNLIT
+in vec3 normal;
+in vec4 tangent;
+out vec2 normal_uv;
+out vec2 metallic_roughness_uv;
+out vec2 occlusion_uv;
+out vec3 vary_tangent;
+flat out float vary_sign;
+out vec3 vary_normal;
+#endif
+
+vec2 gltf_texture_transform(vec2 texcoord, vec4[2] p)
+{
+    texcoord.y = 1.0 - texcoord.y;
+
+    vec2 Scale = p[0].xy;
+    float Rotation = -p[0].z;
+    vec2 Offset = vec2(p[0].w, p[1].x);
+
+    mat3 translation = mat3(1,0,0, 0,1,0, Offset.x, Offset.y, 1);
+    mat3 rotation = mat3(
+        cos(Rotation), sin(Rotation), 0,
+        -sin(Rotation), cos(Rotation), 0,
+        0, 0, 1);
+
+    mat3 scale = mat3(Scale.x,0,0, 0,Scale.y,0, 0,0,1);
+
+    mat3 matrix = translation * rotation * scale;
+
+    vec2 uvTransformed = ( matrix * vec3(texcoord.xy, 1) ).xy;
+
+    uvTransformed.y = 1.0 - uvTransformed.y;
+
+    return uvTransformed;
+}
+
+#ifndef UNLIT
+vec3 gltf_tangent_space_transform(vec4 vertex_tangent, vec3 vertex_normal, vec4[2] khr_gltf_transform)
+{ //derived from tangent_space_transform in textureUtilV.glsl
+    vec2 weights = vec2(0, 1);
+
+    // Convert to left-handed coordinate system
+    weights.y = -weights.y;
+
+    // Apply KHR_texture_transform (rotation only)
+    float khr_rotation = khr_gltf_transform[0].z;
+    mat2 khr_rotation_mat = mat2(
+        cos(khr_rotation),-sin(khr_rotation),
+        sin(khr_rotation), cos(khr_rotation)
+    );
+    weights = khr_rotation_mat * weights;
+
+    // Convert back to right-handed coordinate system
+    weights.y = -weights.y;
+
+    // Similar to the MikkTSpace-compatible method of extracting the binormal
+    // from the normal and tangent, as seen in the fragment shader
+    vec3 vertex_binormal = vertex_tangent.w * cross(vertex_normal, vertex_tangent.xyz);
+
+    return (weights.x * vertex_binormal.xyz) + (weights.y * vertex_tangent.xyz);
+
+    return vertex_tangent.xyz;
+}
+#endif
+
+#ifdef ALPHA_BLEND
+out vec3 vary_fragcoord;
+#endif
+
+#ifdef HAS_SKIN
+
+layout (std140) uniform GLTFJoints
+{
+    mat3x4 gltf_joints[MAX_NODES_PER_GLTF_OBJECT];
+};
+
+
+in uvec4 joint;
+in vec4 weight4;
+
+mat4 getGLTFTransform()
+{
+    int i;
+
+    vec4 w = weight4;
+
+    uint i1 = joint.x;
+    uint i2 = joint.y;
+    uint i3 = joint.z;
+    uint i4 = joint.w;
+
+    mat3 mat = mat3(gltf_joints[i1])*w.x;
+         mat += mat3(gltf_joints[i2])*w.y;
+         mat += mat3(gltf_joints[i3])*w.z;
+         mat += mat3(gltf_joints[i4])*w.w;
+
+    vec3 trans = vec3(gltf_joints[i1][0].w,gltf_joints[i1][1].w,gltf_joints[i1][2].w)*w.x;
+         trans += vec3(gltf_joints[i2][0].w,gltf_joints[i2][1].w,gltf_joints[i2][2].w)*w.y;
+         trans += vec3(gltf_joints[i3][0].w,gltf_joints[i3][1].w,gltf_joints[i3][2].w)*w.z;
+         trans += vec3(gltf_joints[i4][0].w,gltf_joints[i4][1].w,gltf_joints[i4][2].w)*w.w;
+
+    mat4 ret;
+
+    ret[0] = vec4(mat[0], 0);
+    ret[1] = vec4(mat[1], 0);
+    ret[2] = vec4(mat[2], 0);
+    ret[3] = vec4(trans, 1.0);
+
+    return ret;
+}
+
+#else
+
+layout (std140) uniform GLTFNodes
+{
+    mat3x4 gltf_nodes[MAX_NODES_PER_GLTF_OBJECT];
+};
+
+uniform int gltf_node_id = 0;
+
+mat4 getGLTFTransform()
+{
+    mat4 ret;
+    mat3x4 src = gltf_nodes[gltf_node_id];
+
+    ret[0] = vec4(src[0].xyz, 0);
+    ret[1] = vec4(src[1].xyz, 0);
+    ret[2] = vec4(src[2].xyz, 0);
+
+    ret[3] = vec4(src[0].w, src[1].w, src[2].w, 1);
+
+    return ret;
+}
+
+#endif
+
+void main()
+{
+    unpackTextureTransforms();
+    mat4 mat = getGLTFTransform();
+
+    mat = modelview_matrix * mat;
+
+    vec3 pos = (mat*vec4(position.xyz,1.0)).xyz;
+    vary_position = pos;
+
+    vec4 vert = projection_matrix * vec4(pos, 1.0);
+    gl_Position = vert;
+
+    vec2 bcuv;
+    vec2 emuv;
+
+#ifdef MULTI_UV
+    vec2 uv[2];
+    uv[0] = texcoord0;
+    uv[1] = texcoord1;
+
+    bcuv = uv[base_color_texcoord];
+    emuv = uv[emissive_texcoord];
+#else
+    bcuv = texcoord0;
+    emuv = texcoord0;
+#endif
+
+    base_color_uv = gltf_texture_transform(bcuv, texture_base_color_transform);
+    emissive_uv = gltf_texture_transform(emuv, texture_emissive_transform);
+
+#ifndef UNLIT
+    vec2 normuv;
+    vec2 rmuv;
+    vec2 ouv;
+#ifdef MULTI_UV
+    normuv = uv[normal_texcoord];
+    rmuv = uv[metallic_roughness_texcoord];
+    ouv = uv[occlusion_texcoord];
+#else
+    normuv = texcoord0;
+    rmuv = texcoord0;
+    ouv = texcoord0;
+#endif
+    normal_uv = gltf_texture_transform(normuv, texture_normal_transform);
+    metallic_roughness_uv = gltf_texture_transform(rmuv, texture_metallic_roughness_transform);
+    occlusion_uv = gltf_texture_transform(ouv, texture_occlusion_transform);
+#endif
+
+#ifndef UNLIT
+    vec3 n = (mat*vec4(normal.xyz+position.xyz,1.0)).xyz-pos.xyz;
+    vec3 t = (mat*vec4(tangent.xyz+position.xyz,1.0)).xyz-pos.xyz;
+
+    n = normalize(n);
+    vary_tangent = normalize(gltf_tangent_space_transform(vec4(t, tangent.w), n, texture_normal_transform));
+    vary_sign = tangent.w;
+    vary_normal = n;
+#endif
+
+    vertex_color = diffuse_color;
+#ifdef ALPHA_BLEND
+    vary_fragcoord = vert.xyz;
+#endif
+}
+
+
+
+
diff --git a/indra/newview/app_settings/shaders/class1/interface/copyF.glsl b/indra/newview/app_settings/shaders/class1/interface/copyF.glsl
index edaa2488f0..094d147e86 100644
--- a/indra/newview/app_settings/shaders/class1/interface/copyF.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/copyF.glsl
@@ -25,7 +25,10 @@
 
 in vec2 tc;
 
+#if defined(COPY_DEPTH)
 uniform sampler2D depthMap;
+#endif
+
 uniform sampler2D diffuseMap;
 
 out vec4 frag_color;
diff --git a/indra/newview/app_settings/shaders/class1/interface/normaldebugG.glsl b/indra/newview/app_settings/shaders/class1/interface/normaldebugG.glsl
index 51d05cd507..50737d4742 100644
--- a/indra/newview/app_settings/shaders/class1/interface/normaldebugG.glsl
+++ b/indra/newview/app_settings/shaders/class1/interface/normaldebugG.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file normaldebugG.glsl
  *
  * $LicenseInfo:firstyear=2023&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2023, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
diff --git a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl
index a2125b2aec..38fdd379ea 100644
--- a/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl
+++ b/indra/newview/app_settings/shaders/class1/windlight/atmosphericsFuncs.glsl
@@ -57,9 +57,9 @@ void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, ou
 
     vec3  rel_pos_norm = normalize(rel_pos);
     float rel_pos_len  = length(rel_pos);
-    
+
     vec3  sunlight     = (sun_up_factor == 1) ? sunlight_color: moonlight_color;
-    
+
     // sunlight attenuation effect (hue and brightness) due to atmosphere
     // this is used later for sunlight modulation at various altitudes
     vec3 light_atten = (blue_density + vec3(haze_density * 0.25)) * (density_multiplier * max_y);
@@ -119,7 +119,7 @@ void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, ou
     additive = (blue_horizon.rgb * blue_weight.rgb) * (cs + tmpAmbient.rgb) + (haze_horizon * haze_weight.rgb) * (cs * haze_glow + tmpAmbient.rgb);
 
     // brightness of surface both sunlight and ambient
-    
+
     sunlit = sunlight.rgb;
     amblit = tmpAmbient;
 
@@ -128,7 +128,7 @@ void calcAtmosphericVars(vec3 inPositionEye, vec3 light_dir, float ambFactor, ou
 
 vec3 srgb_to_linear(vec3 col);
 
-// provide a touch of lighting in the opposite direction of the sun light 
+// provide a touch of lighting in the opposite direction of the sun light
     // so areas in shadow don't lose all detail
 float ambientLighting(vec3 norm, vec3 light_dir)
 {
@@ -150,7 +150,7 @@ void calcAtmosphericVarsLinear(vec3 inPositionEye, vec3 norm, vec3 light_dir, ou
     // (allows for mixing of light sources other than sunlight e.g. reflection probes)
     sunlit *= sky_sunlight_scale;
     amblit *= sky_ambient_scale;
-    
+
     amblit = srgb_to_linear(amblit);
     amblit *= ambientLighting(norm, light_dir);
 }
diff --git a/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl b/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
index 059c2a64ce..f4a8051427 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/pbralphaF.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file class1\deferred\pbralphaF.glsl
  *
  * $LicenseInfo:firstyear=2022&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2022, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -87,7 +87,7 @@ vec4 applySkyAndWaterFog(vec3 pos, vec3 additive, vec3 atten, vec4 color);
 void calcHalfVectors(vec3 lv, vec3 n, vec3 v, out vec3 h, out vec3 l, out float nh, out float nl, out float nv, out float vh, out float lightDist);
 float calcLegacyDistanceAttenuation(float distance, float falloff);
 float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen);
-void sampleReflectionProbes(inout vec3 ambenv, inout vec3 glossenv, 
+void sampleReflectionProbes(inout vec3 ambenv, inout vec3 glossenv,
         vec2 tc, vec3 pos, vec3 norm, float glossiness, bool transparent, vec3 amblit_linear);
 
 void mirrorClip(vec3 pos);
@@ -111,15 +111,15 @@ vec3 pbrBaseLight(vec3 diffuseColor,
                   vec3 additive,
                   vec3 atten);
 
-vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor, 
-                    float perceptualRoughness, 
+vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
+                    float perceptualRoughness,
                     float metallic,
                     vec3 n, // normal
                     vec3 v, // surface point to camera
                     vec3 l); //surface point to light
 
-vec3 calcPointLightOrSpotLight(vec3 diffuseColor, vec3 specularColor, 
-                    float perceptualRoughness, 
+vec3 pbrCalcPointLightOrSpotLight(vec3 diffuseColor, vec3 specularColor,
+                    float perceptualRoughness,
                     float metallic,
                     vec3 n, // normal
                     vec3 p, // pixel position
@@ -127,33 +127,7 @@ vec3 calcPointLightOrSpotLight(vec3 diffuseColor, vec3 specularColor,
                     vec3 lp, // light position
                     vec3 ld, // light direction (for spotlights)
                     vec3 lightColor,
-                    float lightSize, float falloff, float is_pointlight, float ambiance)
-{
-    vec3 color = vec3(0,0,0);
-
-    vec3 lv = lp.xyz - p;
-
-    float lightDist = length(lv);
-
-    float dist = lightDist / lightSize;
-    if (dist <= 1.0)
-    {
-        lv /= lightDist;
-
-        float dist_atten = calcLegacyDistanceAttenuation(dist, falloff);
-
-        // spotlight coefficient.
-        float spot = max(dot(-ld, lv), is_pointlight);
-        // spot*spot => GL_SPOT_EXPONENT=2
-        float spot_atten = spot*spot;
-
-        vec3 intensity = spot_atten * dist_atten * lightColor * 3.0; //magic number to balance with legacy materials
-
-        color = intensity*pbrPunctual(diffuseColor, specularColor, perceptualRoughness, metallic, n.xyz, v, lv);
-    }
-
-    return color;
-}
+                    float lightSize, float falloff, float is_pointlight, float ambiance);
 
 void main()
 {
@@ -181,7 +155,7 @@ void main()
     float sign = vary_sign;
     vec3 vN = vary_normal;
     vec3 vT = vary_tangent.xyz;
-    
+
     vec3 vB = sign * cross(vN, vT);
     vec3 norm = normalize( vNt.x * vT + vNt.y * vB + vNt.z * vN );
 
@@ -218,7 +192,7 @@ void main()
     vec3  irradiance = vec3(0);
     vec3  radiance  = vec3(0);
     sampleReflectionProbes(irradiance, radiance, vary_position.xy*0.5+0.5, pos.xyz, norm.xyz, gloss, true, amblit);
-    
+
     vec3 diffuseColor;
     vec3 specularColor;
     calcDiffuseSpecular(col.rgb, metallic, diffuseColor, specularColor);
@@ -230,7 +204,7 @@ void main()
     vec3 light = vec3(0);
 
     // Punctual lights
-#define LIGHT_LOOP(i) light += calcPointLightOrSpotLight(diffuseColor, specularColor, perceptualRoughness, metallic, norm.xyz, pos.xyz, v, light_position[i].xyz, light_direction[i].xyz, light_diffuse[i].rgb, light_deferred_attenuation[i].x, light_deferred_attenuation[i].y, light_attenuation[i].z, light_attenuation[i].w);
+#define LIGHT_LOOP(i) light += pbrCalcPointLightOrSpotLight(diffuseColor, specularColor, perceptualRoughness, metallic, norm.xyz, pos.xyz, v, light_position[i].xyz, light_direction[i].xyz, light_diffuse[i].rgb, light_deferred_attenuation[i].x, light_deferred_attenuation[i].y, light_attenuation[i].z, light_attenuation[i].w);
 
     LIGHT_LOOP(1)
     LIGHT_LOOP(2)
@@ -245,7 +219,7 @@ void main()
     color.rgb = applySkyAndWaterFog(pos.xyz, additive, atten, vec4(color, 1.0)).rgb;
 
     float a = basecolor.a*vertex_color.a;
-    
+
     frag_color = max(vec4(color.rgb,a), vec4(0));
 }
 
@@ -295,7 +269,7 @@ void main()
     // emissiveMap here is a vanilla RGB texture encoded as sRGB, manually convert to linear
     colorEmissive *= srgb_to_linear(texture(emissiveMap, emissive_texcoord.xy).rgb);
 
-    
+
     float a = basecolor.a*vertex_color.a;
     color += colorEmissive;
 
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
index 1bd5f5a718..f6c75e6a9c 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file sunLightF.glsl
  *
  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2007, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -41,7 +41,7 @@ vec4 getPosition(vec2 pos_screen);
 float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen);
 float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen);
 
-void main() 
+void main()
 {
     vec2 pos_screen = vary_fragcoord.xy;
     vec4 pos        = getPosition(pos_screen);
@@ -50,7 +50,7 @@ void main()
     vec4 col;
     col.r = sampleDirectionalShadow(pos.xyz, norm.xyz, pos_screen);
     col.g = 1.0f;
-    col.b = sampleSpotShadow(pos.xyz, norm.xyz, 0, pos_screen); 
+    col.b = sampleSpotShadow(pos.xyz, norm.xyz, 0, pos_screen);
     col.a = sampleSpotShadow(pos.xyz, norm.xyz, 1, pos_screen);
 
     frag_color = clamp(col, vec4(0), vec4(1));
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
index e0333b6044..3437ed4b4c 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl
@@ -1,27 +1,27 @@
-/** 
+/**
  * @file class2/deferred/sunLightSSAOF.glsl
  * $LicenseInfo:firstyear=2007&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2007, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
- 
+
 /*[EXTRA_CODE_HERE]*/
 
 out vec4 frag_color;
@@ -38,7 +38,7 @@ float sampleDirectionalShadow(vec3 shadow_pos, vec3 norm, vec2 pos_screen);
 float sampleSpotShadow(vec3 shadow_pos, vec3 norm, int index, vec2 pos_screen);
 float calcAmbientOcclusion(vec4 pos, vec3 norm, vec2 pos_screen);
 
-void main() 
+void main()
 {
     vec2 pos_screen = vary_fragcoord.xy;
     vec4 pos  = getPosition(pos_screen);
diff --git a/indra/newview/app_settings/shaders/class3/deferred/hazeF.glsl b/indra/newview/app_settings/shaders/class3/deferred/hazeF.glsl
index 4af57e3b80..7b82aa1a0d 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/hazeF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/hazeF.glsl
@@ -25,8 +25,6 @@
 
 out vec4 frag_color;
 
-uniform sampler2D normalMap;
-
 // Inputs
 uniform vec3 sun_dir;
 uniform vec3 moon_dir;
@@ -67,16 +65,16 @@ void main()
     calcAtmosphericVarsLinear(pos.xyz, norm.xyz, light_dir, sunlit, amblit, additive, atten);
 
     vec3 sunlit_linear = srgb_to_linear(sunlit);
-    
+
     // mask off atmospherics below water (when camera is under water)
     bool do_atmospherics = false;
-        
+
     if (dot(vec3(0), waterPlane.xyz) + waterPlane.w > 0.0 ||
         dot(pos.xyz, waterPlane.xyz) + waterPlane.w > 0.0)
     {
         do_atmospherics = true;
     }
-    
+
     vec3  irradiance = vec3(0);
     vec3  radiance  = vec3(0);
 
@@ -101,5 +99,5 @@ void main()
     }
 
     frag_color = max(vec4(color.rgb, alpha), vec4(0)); //output linear since local lights will be added to this shader's results
-    
+
 }
diff --git a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
index 28b1b5f5e6..5ee9aea09d 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/materialF.glsl
@@ -77,7 +77,6 @@ uniform float is_mirror;
 
 uniform vec3 sun_dir;
 uniform vec3 moon_dir;
-in vec2 vary_fragcoord;
 
 uniform mat4 proj_mat;
 uniform mat4 inv_proj;
diff --git a/indra/newview/app_settings/shaders/class3/deferred/multiPointLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/multiPointLightF.glsl
index edfd6cbced..4ed778371f 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/multiPointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/multiPointLightF.glsl
@@ -27,7 +27,6 @@
 
 out vec4 frag_color;
 
-uniform sampler2D depthMap;
 uniform sampler2D diffuseRect;
 uniform sampler2D specularRect;
 uniform sampler2D emissiveRect; // PBR linear packed Occlusion, Roughness, Metal. See: pbropaqueF.glsl
@@ -56,8 +55,8 @@ vec3 srgb_to_linear(vec3 c);
 // Util
 vec3 hue_to_rgb(float hue);
 
-vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor, 
-                    float perceptualRoughness, 
+vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
+                    float perceptualRoughness,
                     float metallic,
                     vec3 n, // normal
                     vec3 v, // surface point to camera
@@ -91,7 +90,7 @@ void main()
         float metallic = orm.b;
         vec3 f0 = vec3(0.04);
         vec3 baseColor = diffuse.rgb;
-        
+
         vec3 diffuseColor = baseColor.rgb*(vec3(1.0)-f0);
         diffuseColor *= 1.0 - metallic;
 
diff --git a/indra/newview/app_settings/shaders/class3/deferred/pointLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/pointLightF.glsl
index 60be9f4407..6c13757149 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/pointLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/pointLightF.glsl
@@ -1,38 +1,36 @@
-/** 
+/**
  * @file class3\deferred\pointLightF.glsl
  *
  * $LicenseInfo:firstyear=2022&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2022, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
- 
+
 /*[EXTRA_CODE_HERE]*/
 
 out vec4 frag_color;
 
 uniform sampler2D diffuseRect;
 uniform sampler2D specularRect;
-uniform sampler2D normalMap;
 uniform sampler2D emissiveRect; // PBR linear packed Occlusion, Roughness, Metal. See: pbropaqueF.glsl
 uniform sampler2D lightFunc;
-uniform sampler2D depthMap;
 
 uniform vec3 env_mat[3];
 uniform float sun_wash;
@@ -59,8 +57,8 @@ vec2 getScreenCoord(vec4 clip);
 vec3 srgb_to_linear(vec3 c);
 float getDepth(vec2 tc);
 
-vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor, 
-                    float perceptualRoughness, 
+vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
+                    float perceptualRoughness,
                     float metallic,
                     vec3 n, // normal
                     vec3 v, // surface point to camera
@@ -93,13 +91,13 @@ void main()
 
     if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR))
     {
-        vec3 colorEmissive = texture(emissiveRect, tc).rgb; 
+        vec3 colorEmissive = texture(emissiveRect, tc).rgb;
         vec3 orm = spec.rgb;
         float perceptualRoughness = orm.g;
         float metallic = orm.b;
         vec3 f0 = vec3(0.04);
         vec3 baseColor = diffuse.rgb;
-        
+
         vec3 diffuseColor = baseColor.rgb*(vec3(1.0)-f0);
         diffuseColor *= 1.0 - metallic;
 
@@ -136,7 +134,7 @@ void main()
                 final_color += lit*scol*color.rgb*spec.rgb;
             }
         }
-    
+
         if (dot(final_color, final_color) <= 0.0)
         {
             discard;
diff --git a/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl b/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
index 47ec8fba55..4bae7b6deb 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/reflectionProbeF.glsl
@@ -51,7 +51,7 @@ layout (std140) uniform ReflectionProbes
     mat4 heroBox;
     // list of bounding spheres for reflection probes sorted by distance to camera (closest first)
     vec4 refSphere[MAX_REFMAP_COUNT];
-    // extra parameters 
+    // extra parameters
     //  x - irradiance scale
     //  y - radiance scale
     //  z - fade in
@@ -102,7 +102,7 @@ bool shouldSampleProbe(int i, vec3 pos)
     if (refIndex[i].w < 0)
     {
         vec4 v = refBox[i] * vec4(pos, 1.0);
-        if (abs(v.x) > 1 || 
+        if (abs(v.x) > 1 ||
             abs(v.y) > 1 ||
             abs(v.z) > 1)
         {
@@ -229,7 +229,7 @@ void preProbeSample(vec3 pos)
                         }
                     }
                     count++;
-                    
+
                     ++neighborIdx;
                 }
 
@@ -251,56 +251,56 @@ void preProbeSample(vec3 pos)
 
 // original reference implementation:
 /*
-bool intersect(const Ray &ray) const 
-{ 
-        float t0, t1; // solutions for t if the ray intersects 
-#if 0 
+bool intersect(const Ray &ray) const
+{
+        float t0, t1; // solutions for t if the ray intersects
+#if 0
         // geometric solution
-        Vec3f L = center - orig; 
-        float tca = L.dotProduct(dir); 
+        Vec3f L = center - orig;
+        float tca = L.dotProduct(dir);
         // if (tca < 0) return false;
-        float d2 = L.dotProduct(L) - tca * tca; 
-        if (d2 > radius2) return false; 
-        float thc = sqrt(radius2 - d2); 
-        t0 = tca - thc; 
-        t1 = tca + thc; 
-#else 
+        float d2 = L.dotProduct(L) - tca * tca;
+        if (d2 > radius2) return false;
+        float thc = sqrt(radius2 - d2);
+        t0 = tca - thc;
+        t1 = tca + thc;
+#else
         // analytic solution
-        Vec3f L = orig - center; 
-        float a = dir.dotProduct(dir); 
-        float b = 2 * dir.dotProduct(L); 
-        float c = L.dotProduct(L) - radius2; 
-        if (!solveQuadratic(a, b, c, t0, t1)) return false; 
-#endif 
-        if (t0 > t1) std::swap(t0, t1); 
- 
-        if (t0 < 0) { 
-            t0 = t1; // if t0 is negative, let's use t1 instead 
-            if (t0 < 0) return false; // both t0 and t1 are negative 
-        } 
- 
-        t = t0; 
- 
-        return true; 
+        Vec3f L = orig - center;
+        float a = dir.dotProduct(dir);
+        float b = 2 * dir.dotProduct(L);
+        float c = L.dotProduct(L) - radius2;
+        if (!solveQuadratic(a, b, c, t0, t1)) return false;
+#endif
+        if (t0 > t1) std::swap(t0, t1);
+
+        if (t0 < 0) {
+            t0 = t1; // if t0 is negative, let's use t1 instead
+            if (t0 < 0) return false; // both t0 and t1 are negative
+        }
+
+        t = t0;
+
+        return true;
 } */
 
 // adapted -- assume that origin is inside sphere, return intersection of ray with edge of sphere
 vec3 sphereIntersect(vec3 origin, vec3 dir, vec3 center, float radius2)
-{ 
-        float t0, t1; // solutions for t if the ray intersects 
+{
+        float t0, t1; // solutions for t if the ray intersects
 
-        vec3 L = center - origin; 
+        vec3 L = center - origin;
         float tca = dot(L,dir);
 
-        float d2 = dot(L,L) - tca * tca; 
+        float d2 = dot(L,L) - tca * tca;
+
+        float thc = sqrt(radius2 - d2);
+        t0 = tca - thc;
+        t1 = tca + thc;
 
-        float thc = sqrt(radius2 - d2); 
-        t0 = tca - thc; 
-        t1 = tca + thc; 
- 
         vec3 v = origin + dir * t1;
-        return v; 
-} 
+        return v;
+}
 
 void swap(inout float a, inout float b)
 {
@@ -312,17 +312,17 @@ void swap(inout float a, inout float b)
 // debug implementation, make no assumptions about origin
 void sphereIntersectDebug(vec3 origin, vec3 dir, vec3 center, float radius2, float depth, inout vec4 col)
 {
-    float t[2]; // solutions for t if the ray intersects 
+    float t[2]; // solutions for t if the ray intersects
 
     // geometric solution
-    vec3 L = center - origin; 
+    vec3 L = center - origin;
     float tca = dot(L, dir);
     // if (tca < 0) return false;
-    float d2 = dot(L, L) - tca * tca; 
-    if (d2 > radius2) return; 
-    float thc = sqrt(radius2 - d2); 
-    t[0] = tca - thc; 
-    t[1] = tca + thc; 
+    float d2 = dot(L, L) - tca * tca;
+    if (d2 > radius2) return;
+    float thc = sqrt(radius2 - d2);
+    t[0] = tca - thc;
+    t[1] = tca + thc;
 
     for (int i = 0; i < 2; ++i)
     {
@@ -411,8 +411,8 @@ void debugBoxCol(vec3 ro, vec3 rd, float t, vec3 p, inout vec4 col)
     bool behind = dot(v,v) > dot(pos,pos);
 
     float w = 0.25;
-   
-    if (behind) 
+
+    if (behind)
     {
         w *= 0.5;
         w /= (length(v)-length(pos))*0.5+1.0;
@@ -426,7 +426,7 @@ void debugBoxCol(vec3 ro, vec3 rd, float t, vec3 p, inout vec4 col)
 
 // cribbed from https://iquilezles.org/articles/intersectors/
 // axis aligned box centered at the origin, with size boxSize
-void boxIntersectionDebug( in vec3 ro, in vec3 p, vec3 boxSize, inout vec4 col) 
+void boxIntersectionDebug( in vec3 ro, in vec3 p, vec3 boxSize, inout vec4 col)
 {
     vec3 rd = normalize(p-ro);
 
@@ -471,7 +471,7 @@ void boxIntersectDebug(vec3 origin, vec3 pos, mat4 i, inout vec4 col)
 // dw - distance weight
 float sphereWeight(vec3 pos, vec3 dir, vec3 origin, float r, vec4 i, out float dw)
 {
-    float r1 = r * 0.5; // 50% of radius (outer sphere to start interpolating down) 
+    float r1 = r * 0.5; // 50% of radius (outer sphere to start interpolating down)
     vec3 delta = pos.xyz - origin;
     float d2 = max(length(delta), 0.001);
 
@@ -495,7 +495,7 @@ float sphereWeight(vec3 pos, vec3 dir, vec3 origin, float r, vec4 i, out float d
 // lod - which mip to sample (lower is higher res, sharper reflections)
 // c - center of probe
 // r2 - radius of probe squared
-// i - index of probe 
+// i - index of probe
 vec3 tapRefMap(vec3 pos, vec3 dir, out float w, out float dw, float lod, vec3 c, int i)
 {
     // parallax adjustment
@@ -514,7 +514,7 @@ vec3 tapRefMap(vec3 pos, vec3 dir, out float w, out float dw, float lod, vec3 c,
 
         float rr = r * r;
 
-        v = sphereIntersect(pos, dir, c, 
+        v = sphereIntersect(pos, dir, c,
         refIndex[i].w < 1 ? 4096.0*4096.0 : // <== effectively disable parallax correction for automatically placed probes to keep from bombing the world with obvious spheres
                 rr);
 
@@ -525,7 +525,7 @@ vec3 tapRefMap(vec3 pos, vec3 dir, out float w, out float dw, float lod, vec3 c,
     vec3 d = normalize(v);
 
     v = env_mat * v;
-    
+
     vec4 ret = textureLod(reflectionProbes, vec4(v.xyz, refIndex[i].x), lod) * refParams[i].y;
 
     return ret.rgb;
@@ -536,7 +536,7 @@ vec3 tapRefMap(vec3 pos, vec3 dir, out float w, out float dw, float lod, vec3 c,
 // dir - pixel normal
 // w - weight of sample (distance and angular attenuation)
 // dw - weight of sample (distance only)
-// i - index of probe 
+// i - index of probe
 vec3 tapIrradianceMap(vec3 pos, vec3 dir, out float w, out float dw, vec3 c, int i, vec3 amblit)
 {
     // parallax adjustment
@@ -554,7 +554,7 @@ vec3 tapIrradianceMap(vec3 pos, vec3 dir, out float w, out float dw, vec3 c, int
         // pad sphere for manual probe extending into automatic probe space
         float rr = r * r;
 
-        v = sphereIntersect(pos, dir, c, 
+        v = sphereIntersect(pos, dir, c,
         refIndex[i].w < 1 ? 4096.0*4096.0 : // <== effectively disable parallax correction for automatically placed probes to keep from bombing the world with obvious spheres
                 rr);
 
@@ -563,7 +563,7 @@ vec3 tapIrradianceMap(vec3 pos, vec3 dir, out float w, out float dw, vec3 c, int
 
     v -= c;
     v = env_mat * v;
-    
+
     vec3 col = textureLod(irradianceProbes, vec4(v.xyz, refIndex[i].x), 0).rgb * refParams[i].x;
 
     col = mix(amblit, col, min(refParams[i].x, 1.0));
@@ -625,7 +625,7 @@ vec3 sampleProbes(vec3 pos, vec3 dir, float lod)
         col[1] *= 1.0/wsum[1];
         col[0] = vec3(0);
     }
-    
+
     return col[1]+col[0];
 }
 
@@ -654,7 +654,7 @@ vec3 sampleProbeAmbient(vec3 pos, vec3 dir, vec3 amblit)
         {
             continue;
         }
-        
+
         {
             float w = 0;
             float dw = 0;
@@ -684,7 +684,7 @@ vec3 sampleProbeAmbient(vec3 pos, vec3 dir, vec3 amblit)
         col[1] *= 1.0/wsum[1];
         col[0] = vec3(0);
     }
-    
+
     return col[1]+col[0];
 }
 
@@ -704,13 +704,13 @@ void tapHeroProbe(inout vec3 glossenv, vec3 pos, vec3 norm, float glossiness)
     {
         float d = 0;
         boxIntersect(pos, norm, heroBox, d, 1.0);
-        
+
         w = max(d, 0);
     }
     else
     {
         float r = heroSphere.w;
-        
+
         w = sphereWeight(pos, refnormpersp, heroSphere.xyz, r, vec4(1), dw);
     }
 
@@ -851,9 +851,9 @@ void sampleReflectionProbesLegacy(out vec3 ambenv, out vec3 glossenv, out vec3 l
     {
         float lod = (1.0-glossiness)*reflection_lods;
         glossenv = sampleProbes(pos, normalize(refnormpersp), lod);
-        
+
     }
-    
+
     if (envIntensity > 0.0)
     {
         legacyenv = sampleProbes(pos, normalize(refnormpersp), 0.0);
diff --git a/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl b/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl
index deb276ef9d..9ac389f926 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/screenSpaceReflPostF.glsl
@@ -52,7 +52,7 @@ float random (vec2 uv);
 
 float tapScreenSpaceReflection(int totalSamples, vec2 tc, vec3 viewPos, vec3 n, inout vec4 collectedColor, sampler2D source, float glossiness);
 
-void main() 
+void main()
 {
     vec2  tc = vary_fragcoord.xy;
     float depth = linearDepth01(getDepth(tc), zNear, zFar);
@@ -60,13 +60,13 @@ void main()
     vec3 pos = getPositionWithDepth(tc, getDepth(tc)).xyz;
     vec4 spec    = texture(specularRect, tc);
     vec2 hitpixel;
-    
+
     vec4 diffuse = texture(diffuseRect, tc);
     vec3 specCol = spec.rgb;
 
     vec4 fcol = texture(diffuseMap, tc);
 
-    if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR)) 
+    if (GET_GBUFFER_FLAG(GBUFFER_FLAG_HAS_PBR))
     {
         vec3 orm = specCol.rgb;
         float perceptualRoughness = orm.g;
diff --git a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
index 494a69efd0..4231d8580e 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
@@ -29,7 +29,6 @@ out vec4 frag_color;
 
 uniform sampler2D diffuseRect;
 uniform sampler2D specularRect;
-uniform sampler2D normalMap;
 uniform sampler2D emissiveRect; // PBR linear packed Occlusion, Roughness, Metal. See: pbropaqueF.glsl
 
 const float M_PI = 3.14159265;
@@ -38,7 +37,6 @@ const float M_PI = 3.14159265;
 uniform sampler2D lightMap;
 #endif
 
-uniform sampler2D depthMap;
 uniform sampler2D     lightFunc;
 
 uniform float blur_size;
@@ -105,8 +103,8 @@ vec3 pbrBaseLight(vec3 diffuseColor,
                   vec3 additive,
                   vec3 atten);
 
-vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor, 
-                    float perceptualRoughness, 
+vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
+                    float perceptualRoughness,
                     float metallic,
                     vec3 n, // normal
                     vec3 v, // surface point to camera
@@ -174,10 +172,10 @@ void main()
         float metallic = orm.b;
         float ao = orm.r;
 
-        
+
         // PBR IBL
         float gloss      = 1.0 - perceptualRoughness;
-        
+
         sampleReflectionProbes(irradiance, radiance, tc, pos.xyz, norm.xyz, gloss, false, amblit_linear);
 
         adjustIrradiance(irradiance, ambocc);
@@ -205,7 +203,7 @@ void main()
     {
         // legacy shaders are still writng sRGB to gbuffer
         baseColor.rgb = srgb_to_linear(baseColor.rgb);
-        
+
         spec.rgb = srgb_to_linear(spec.rgb);
 
         float da          = clamp(dot(norm.xyz, light_dir.xyz), 0.0, 1.0);
@@ -224,7 +222,7 @@ void main()
         vec3 sun_contrib = min(da, scol) * sunlit_linear;
         color.rgb += sun_contrib;
         color.rgb *= baseColor.rgb;
-        
+
         vec3 refnormpersp = reflect(pos.xyz, norm.xyz);
 
         if (spec.a > 0.0)
@@ -254,7 +252,7 @@ void main()
         }
 
         color.rgb = mix(color.rgb, baseColor.rgb, baseColor.a);
-        
+
         if (envIntensity > 0.0)
         {  // add environment map
             applyLegacyEnv(color, legacyenv, spec, pos.xyz, norm.xyz, envIntensity);
diff --git a/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl
index 319fa86148..bc4d36d10d 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/spotLightF.glsl
@@ -1,40 +1,37 @@
-/** 
+/**
  * @file class3\deferred\spotLightF.glsl
  *
  * $LicenseInfo:firstyear=2022&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2022, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
- 
+
 /*[EXTRA_CODE_HERE]*/
 
 out vec4 frag_color;
 
 uniform sampler2D diffuseRect;
 uniform sampler2D specularRect;
-uniform sampler2D depthMap;
-uniform sampler2D normalMap;
 uniform sampler2D emissiveRect; // PBR linear packed Occlusion, Roughness, Metal. See: pbropaqueF.glsl
 uniform samplerCube environmentMap;
 uniform sampler2D lightMap;
-uniform sampler2D projectionMap; // rgba
 uniform sampler2D lightFunc;
 
 uniform mat4 proj_mat; //screen space to light space
@@ -83,8 +80,8 @@ vec4 getPosition(vec2 pos_screen);
 
 const float M_PI = 3.14159265;
 
-vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor, 
-                    float perceptualRoughness, 
+vec3 pbrPunctual(vec3 diffuseColor, vec3 specularColor,
+                    float perceptualRoughness,
                     float metallic,
                     vec3 n, // normal
                     vec3 v, // surface point to camera
@@ -112,13 +109,13 @@ void main()
     }
 
     float shadow = 1.0;
-    
+
     if (proj_shadow_idx >= 0)
     {
         vec4 shd = texture(lightMap, tc);
         shadow = (proj_shadow_idx==0)?shd.b:shd.a;
         shadow += shadow_fade;
-        shadow = clamp(shadow, 0.0, 1.0);        
+        shadow = clamp(shadow, 0.0, 1.0);
     }
 
     vec4 norm = getNorm(tc);
@@ -149,7 +146,7 @@ void main()
         float metallic = orm.b;
         vec3 f0 = vec3(0.04);
         vec3 baseColor = diffuse.rgb;
-        
+
         vec3 diffuseColor = baseColor.rgb*(vec3(1.0)-f0);
         diffuseColor *= 1.0 - metallic;
 
@@ -167,7 +164,7 @@ void main()
             if (nl > 0.0)
             {
                 amb_da += (nl*0.5 + 0.5) * proj_ambiance;
-                
+
                 dlit = getProjectedLightDiffuseColor( l_dist, proj_tc.xy );
 
                 vec3 intensity = dist_atten * dlit * 3.25 * shadow; // Legacy attenuation, magic number to balance with legacy materials
@@ -205,11 +202,11 @@ void main()
                 // unshadowed for consistency between forward and deferred?
                 amb_da += (nl*0.5+0.5) /* * (1.0-shadow) */ * proj_ambiance;
             }
-        
+
             amb_rgb = getProjectedLightAmbiance( amb_da, dist_atten, lit, nl, 1.0, proj_tc.xy );
             final_color += diffuse.rgb * amb_rgb * max(dot(-normalize(lv), n), 0.0);
         }
-    
+
         if (spec.a > 0.0)
         {
             dlit *= min(nl*6.0, 1.0) * dist_atten;
@@ -218,7 +215,7 @@ void main()
 
             float gtdenom = 2 * nh;
             float gt = max(0, min(gtdenom * nv / vh, gtdenom * nl / vh));
-                                
+
             if (nh > 0.0)
             {
                 float scol = fres*texture(lightFunc, vec2(nh, spec.a)).r*gt/(nh*nl);
@@ -226,26 +223,26 @@ void main()
                 speccol = clamp(speccol, vec3(0), vec3(1));
                 final_color += speccol;
             }
-        }   
+        }
 
         if (envIntensity > 0.0)
         {
             vec3 ref = reflect(normalize(pos), n);
-        
+
             //project from point pos in direction ref to plane proj_p, proj_n
             vec3 pdelta = proj_p-pos;
             float ds = dot(ref, proj_n);
-        
+
             if (ds < 0.0)
             {
                 vec3 pfinal = pos + ref * dot(pdelta, proj_n)/ds;
-            
+
                 vec4 stc = (proj_mat * vec4(pfinal.xyz, 1.0));
 
                 if (stc.z > 0.0)
                 {
                     stc /= stc.w;
-                                
+
                     if (stc.x < 1.0 &&
                         stc.y < 1.0 &&
                         stc.x > 0.0 &&
diff --git a/indra/newview/app_settings/shaders/class3/deferred/waterHazeF.glsl b/indra/newview/app_settings/shaders/class3/deferred/waterHazeF.glsl
index f6bef1e498..2bf785e773 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/waterHazeF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/waterHazeF.glsl
@@ -28,8 +28,6 @@ out vec4 frag_color;
 // Inputs
 in vec4 vary_fragcoord;
 
-uniform sampler2D normalMap;
-
 vec4 getPositionWithDepth(vec2 pos_screen, float depth);
 float getDepth(vec2 pos_screen);
 
@@ -43,7 +41,7 @@ void main()
     float depth        = getDepth(tc.xy);
 
     if (above_water > 0)
-    { 
+    {
         // we want to depth test when the camera is above water, but some GPUs have a hard time
         // with depth testing against render targets that are bound for sampling in the same shader
         // so we do it manually here
@@ -60,5 +58,5 @@ void main()
     vec4 fogged = getWaterFogView(pos.xyz);
 
     frag_color = max(fogged, vec4(0)); //output linear since local lights will be added to this shader's results
-    
+
 }
diff --git a/indra/newview/app_settings/shaders/class3/environment/underWaterF.glsl b/indra/newview/app_settings/shaders/class3/environment/underWaterF.glsl
index 728d70ebb2..1c02dc764d 100644
--- a/indra/newview/app_settings/shaders/class3/environment/underWaterF.glsl
+++ b/indra/newview/app_settings/shaders/class3/environment/underWaterF.glsl
@@ -25,7 +25,6 @@
 
 out vec4 frag_color;
 
-uniform sampler2D diffuseMap;
 uniform sampler2D bumpMap;
 
 #ifdef TRANSPARENT_WATER
diff --git a/indra/newview/featuretable.txt b/indra/newview/featuretable.txt
index 8950770172..03849a0326 100644
--- a/indra/newview/featuretable.txt
+++ b/indra/newview/featuretable.txt
@@ -111,7 +111,7 @@ RenderReflectionProbeLevel  1   0
 RenderMirrors				1	0
 RenderHeroProbeResolution	1	256
 RenderHeroProbeDistance		1	4
-RenderHeroProbeUpdateRate	1	4
+RenderHeroProbeUpdateRate	1	6
 RenderHeroProbeConservativeUpdateMultiplier 1 16
 
 //
diff --git a/indra/newview/featuretable_mac.txt b/indra/newview/featuretable_mac.txt
index 0a3415e7f0..7eb977d2fd 100644
--- a/indra/newview/featuretable_mac.txt
+++ b/indra/newview/featuretable_mac.txt
@@ -109,8 +109,8 @@ RenderScreenSpaceReflections 1  0
 RenderReflectionProbeLevel  1   0
 RenderMirrors				1	0
 RenderHeroProbeResolution	1	256
-RenderHeroProbeDistance		1	3
-RenderHeroProbeUpdateRate	1	6
+RenderHeroProbeDistance		1	4
+RenderHeroProbeUpdateRate	1   6
 RenderHeroProbeConservativeUpdateMultiplier 1 16
 
 
diff --git a/indra/newview/fsfloatersearch.cpp b/indra/newview/fsfloatersearch.cpp
index f05e996699..3f79ee7f4b 100644
--- a/indra/newview/fsfloatersearch.cpp
+++ b/indra/newview/fsfloatersearch.cpp
@@ -322,7 +322,7 @@ void FSFloaterSearch::onClose(bool app_quitting)
     }
 }
 
-BOOL FSFloaterSearch::postBuild()
+bool FSFloaterSearch::postBuild()
 {
     childSetAction("people_profile_btn", boost::bind(&FSFloaterSearch::onBtnPeopleProfile, this));
     childSetAction("people_message_btn", boost::bind(&FSFloaterSearch::onBtnPeopleIM, this));
@@ -813,7 +813,7 @@ FSPanelSearchPeople::~FSPanelSearchPeople()
     }
 }
 
-BOOL FSPanelSearchPeople::postBuild()
+bool FSPanelSearchPeople::postBuild()
 {
     mSearchComboBox =   findChild<LLSearchComboBox>("people_edit");
     mSearchResults =    findChild<LLScrollListCtrl>("search_results_people");
@@ -1161,7 +1161,7 @@ FSPanelSearchGroups::~FSPanelSearchGroups()
 {
 }
 
-BOOL FSPanelSearchGroups::postBuild()
+bool FSPanelSearchGroups::postBuild()
 {
     mSearchComboBox =   findChild<LLSearchComboBox>("groups_edit");
     mSearchResults =    findChild<LLScrollListCtrl>("search_results_groups");
@@ -1478,7 +1478,7 @@ FSPanelSearchPlaces::~FSPanelSearchPlaces()
 {
 }
 
-BOOL FSPanelSearchPlaces::postBuild()
+bool FSPanelSearchPlaces::postBuild()
 {
     mSearchComboBox =   findChild<LLSearchComboBox>("places_edit");
     mSearchResults =    findChild<LLScrollListCtrl>("search_results_places");
@@ -1670,8 +1670,8 @@ void FSPanelSearchPlaces::processSearchReply(LLMessageSystem* msg, void**)
     LLUUID      query_id;
     LLUUID      parcel_id;
     std::string name;
-    BOOL        for_sale;
-    BOOL        auction;
+    bool        for_sale;
+    bool        auction;
     F32         dwell;
 
     msg->getUUID("AgentData", "AgentID", agent_id);
@@ -1837,7 +1837,7 @@ FSPanelSearchLand::~FSPanelSearchLand()
 {
 }
 
-BOOL FSPanelSearchLand::postBuild()
+bool FSPanelSearchLand::postBuild()
 {
     mSearchResults  = getChild<LLScrollListCtrl>("search_results_land");
     mPriceEditor    = findChild<LLLineEditor>("price_edit");
@@ -2057,8 +2057,8 @@ void FSPanelSearchLand::processSearchReply(LLMessageSystem* msg, void**)
     std::string name;
     std::string land_sku;
     std::string land_type;
-    BOOL        auction;
-    BOOL        for_sale;
+    bool        auction;
+    bool        for_sale;
     S32         price;
     S32         area;
 
@@ -2242,7 +2242,7 @@ FSPanelSearchClassifieds::~FSPanelSearchClassifieds()
 {
 }
 
-BOOL FSPanelSearchClassifieds::postBuild()
+bool FSPanelSearchClassifieds::postBuild()
 {
     mSearchComboBox = findChild<LLSearchComboBox>("classifieds_edit");
     mSearchResults = getChild<LLScrollListCtrl>("search_results_classifieds");
@@ -2303,7 +2303,7 @@ void FSPanelSearchClassifieds::find()
         return;
     }
     U32 category = mClassifiedsCategory->getValue().asInteger();
-    BOOL auto_renew = FALSE;
+    bool auto_renew = FALSE;
     U32 flags = pack_classified_flags_request(auto_renew, inc_pg, inc_mature, inc_adult);
 
     mResultsReceived = 0;
@@ -2564,7 +2564,7 @@ FSPanelSearchEvents::~FSPanelSearchEvents()
 {
 }
 
-BOOL FSPanelSearchEvents::postBuild()
+bool FSPanelSearchEvents::postBuild()
 {
     mSearchComboBox = findChild<LLSearchComboBox>("events_edit");
     mSearchResults = getChild<LLScrollListCtrl>("search_results_events");
@@ -3035,7 +3035,7 @@ FSPanelSearchWeb::FSPanelSearchWeb() : FSSearchPanelBase()
     }
 }
 
-BOOL FSPanelSearchWeb::postBuild()
+bool FSPanelSearchWeb::postBuild()
 {
     mWebBrowser = getChild<LLMediaCtrl>("search_browser");
     return TRUE;
diff --git a/indra/newview/fsfloatersearch.h b/indra/newview/fsfloatersearch.h
index 61cef8bab9..90e2a8cb89 100644
--- a/indra/newview/fsfloatersearch.h
+++ b/indra/newview/fsfloatersearch.h
@@ -86,7 +86,7 @@ protected:
     const S32& getNumResultsReceived() const { return mResultsReceived; };
 
 private:
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     virtual ~FSPanelSearchPeople();
 
     void onBtnFind();
@@ -125,7 +125,7 @@ public:
     /*virtual*/ void focusDefaultElement();
 
 private:
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     virtual ~FSPanelSearchGroups();
 
     void onBtnFind();
@@ -159,7 +159,7 @@ public:
     /*virtual*/ void focusDefaultElement();
 
 private:
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     virtual ~FSPanelSearchPlaces();
 
     void onBtnFind();
@@ -192,7 +192,7 @@ public:
     static void processSearchReply(LLMessageSystem* msg, void**);
 
 private:
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     virtual ~FSPanelSearchLand();
 
     void onBtnFind();
@@ -227,7 +227,7 @@ public:
     /*virtual*/ void focusDefaultElement();
 
 private:
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     virtual ~FSPanelSearchClassifieds();
 
     void onBtnFind();
@@ -262,7 +262,7 @@ public:
     /*virtual*/ void focusDefaultElement();
 
 private:
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     virtual ~FSPanelSearchEvents();
 
     void onBtnFind();
@@ -298,7 +298,7 @@ class FSPanelSearchWeb : public FSSearchPanelBase
     LOG_CLASS(FSFloaterSearch);
 public:
     FSPanelSearchWeb();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     void loadURL(const SearchQuery &query);
     /*virtual*/ void focusDefaultElement();
     /*virtual*/ void draw();
@@ -335,7 +335,7 @@ public:
     FSFloaterSearch(const Params& key);
     ~FSFloaterSearch();
     void onOpen(const LLSD& key);
-    BOOL postBuild();
+    bool postBuild();
 
     void avatarNameUpdatedCallback(const LLUUID& id, const LLAvatarName& av_name);
     void groupNameUpdatedCallback(const LLUUID& id, const std::string& name, bool is_group);
diff --git a/indra/newview/gltf/README.md b/indra/newview/gltf/README.md
new file mode 100644
index 0000000000..a2d43be1d6
--- /dev/null
+++ b/indra/newview/gltf/README.md
@@ -0,0 +1,156 @@
+# Linden Lab GLTF Implementation
+
+Currently in prototype stage.  Much functionality is missing (blend shapes,
+multiple texture coordinates, etc).
+
+GLTF Specification can be found here: https://registry.khronos.org/glTF/specs/2.0/glTF-2.0.html.
+If this implementation disagrees with the GLTF Specification, the specification is correct.
+
+Class structure and naming should match the GLTF Specification as closely as possible while
+conforming to the LL coding standards.  All code in headers should be contained in the
+LL::GLTF namespace.
+
+The implementation serves both the client and the server.
+
+## Design Principles
+
+- The implementation MUST be capable of round-trip serialization with no data loss beyond F64 to F32 conversions.
+- The implementation MUST use the same indexing scheme as the GLTF specification.  Do not store pointers where the
+- GLTF specification stores indices, store indices.
+- Limit dependencies on llcommon as much as possible.  Prefer std::, boost::, and (soon) glm:: over LL facsimiles.
+- Usage of LLSD is forbidden in the LL::GLTF namespace.
+- Use "using namespace" liberally in .cpp files, but never in .h files.
+- "using Foo = Bar" is permissible in .h files within the LL::GLTF namespace.
+
+## Loading, Copying, and Serialization
+Each class should provide two functions (Primitive shown for example):
+
+```
+// Serialize to the provided json object.
+// "obj" should be "this" in json form on return
+// Do not serialize default values
+void serialize(boost::json::object& obj) const;
+
+// Initialize from a provided json value
+const Primitive& operator=(const Value& src);
+```
+
+"serialize" implementations should use "write":
+
+```
+void Primitive::serialize(boost::json::object& dst) const
+{
+    write(mMaterial, "material", dst, -1);
+    write(mMode, "mode", dst, TINYGLTF_MODE_TRIANGLES);
+    write(mIndices, "indices", dst, INVALID_INDEX);
+    write(mAttributes, "attributes", dst);
+}
+```
+
+And operator= implementations should use "copy":
+
+```
+const Primitive& Primitive::operator=(const Value& src)
+{
+    if (src.is_object())
+    {
+        copy(src, "material", mMaterial);
+        copy(src, "mode", mMode);
+        copy(src, "indices", mIndices);
+        copy(src, "attributes", mAttributes);
+
+        mGLMode = gltf_mode_to_gl_mode(mMode);
+    }
+    return *this;
+}
+```
+
+Parameters to "write" and "copy" MUST be ordered "src" before "dst"
+so the code reads as "write src to dst" and "copy src to dst".
+
+When reading string constants from GLTF json (i.e. "OPAQUE", "TRIANGLES"), these
+strings should be converted to enums inside operator=.  It is permissible to
+store the original strings during prototyping to aid in development, but eventually
+we'll purge these strings from the implementation.  However, implementations MUST
+preserve any and all "name" members.
+
+"write" and "copy" implementations MUST be stored in buffer_util.h.
+As implementers encounter new data types, you'll see compiler errors
+pointing at templates in buffer_util.h.  See vec3 as a known good
+example of how to add support for a new type (there are bad examples, so beware):
+
+```
+// vec3
+template<>
+inline bool copy(const Value& src, vec3& dst)
+{
+    if (src.is_array())
+    {
+        const boost::json::array& arr = src.as_array();
+        if (arr.size() == 3)
+        {
+            if (arr[0].is_double() &&
+                arr[1].is_double() &&
+                arr[2].is_double())
+            {
+                dst = vec3(arr[0].get_double(), arr[1].get_double(), arr[2].get_double());
+            }
+            return true;
+        }
+    }
+    return false;
+}
+
+template<>
+inline bool write(const vec3& src, Value& dst)
+{
+    dst = boost::json::array();
+    boost::json::array& arr = dst.as_array();
+    arr.resize(3);
+    arr[0] = src.x;
+    arr[1] = src.y;
+    arr[2] = src.z;
+    return true;
+}
+
+```
+
+"write" MUST return true if ANY data was written
+"copy" MUST return true if ANY data was copied
+
+Speed is important, but so is safety.  In writers, try to avoid redundant copies
+(prefer resize over push_back, convert dst to an empty array and fill it, don't
+make an array on the stack and copy it into dst).
+
+boost::json WILL throw exceptions if you call as_foo() on a mismatched type but
+WILL NOT throw exceptions on get_foo with a mismatched type.  ALWAYS check is_foo
+before calling as_foo or get_foo.  DO NOT add exception handlers.  If boost throws
+an exception in serialization, the fix is to add type checks.  If we see a large
+number of crash reports from boost::json exceptions, each of those reports
+indicates a place where we're missing "is_foo" checks.  They are gold.  Do not
+bury them with an exception handler.
+
+DO NOT rely on existing type conversion tools in the LL codebase -- LL data models
+conflict with the GLTF specification so we MUST provide conversions independent of
+our existing implementations.
+
+### JSON Serialization ###
+
+
+
+NEVER include buffer_util.h from a header.
+
+Loading from and saving to disk (import/export) is currently done using tinygltf, but this is not a long term
+solution.  Eventually the implementation should rely solely on boost::json for reading and writing .gltf
+files and should handle .bin files natively.
+
+When serializing Images and Buffers to the server, clients MUST store a single UUID "uri" field and nothing else.
+The server MUST reject any data that violates this requirement.
+
+Clients MUST remove any Images from Buffers prior to upload to the server.
+Servers MAY reject Assets that contain Buffers with unreferenced data.
+
+... to be continued.
+
+
+
diff --git a/indra/newview/gltf/accessor.cpp b/indra/newview/gltf/accessor.cpp
index 55d36b7a32..2ef9237f2d 100644
--- a/indra/newview/gltf/accessor.cpp
+++ b/indra/newview/gltf/accessor.cpp
@@ -27,40 +27,272 @@
 #include "../llviewerprecompiledheaders.h"
 
 #include "asset.h"
+#include "buffer_util.h"
+#include "llfilesystem.h"
 
 using namespace LL::GLTF;
+using namespace boost::json;
 
-const Buffer& Buffer::operator=(const tinygltf::Buffer& src)
+namespace LL
 {
-    mData = src.data;
-    mName = src.name;
-    mUri = src.uri;
+    namespace GLTF
+    {
+        Accessor::Type gltf_type_to_enum(const std::string& type)
+        {
+            if (type == "SCALAR")
+            {
+                return Accessor::Type::SCALAR;
+            }
+            else if (type == "VEC2")
+            {
+                return Accessor::Type::VEC2;
+            }
+            else if (type == "VEC3")
+            {
+                return Accessor::Type::VEC3;
+            }
+            else if (type == "VEC4")
+            {
+                return Accessor::Type::VEC4;
+            }
+            else if (type == "MAT2")
+            {
+                return Accessor::Type::MAT2;
+            }
+            else if (type == "MAT3")
+            {
+                return Accessor::Type::MAT3;
+            }
+            else if (type == "MAT4")
+            {
+                return Accessor::Type::MAT4;
+            }
+
+            LL_WARNS("GLTF") << "Unknown accessor type: " << type << LL_ENDL;
+            llassert(false);
+
+            return Accessor::Type::SCALAR;
+        }
+
+        std::string enum_to_gltf_type(Accessor::Type type)
+        {
+            switch (type)
+            {
+            case Accessor::Type::SCALAR:
+                return "SCALAR";
+            case Accessor::Type::VEC2:
+                return "VEC2";
+            case Accessor::Type::VEC3:
+                return "VEC3";
+            case Accessor::Type::VEC4:
+                return "VEC4";
+            case Accessor::Type::MAT2:
+                return "MAT2";
+            case Accessor::Type::MAT3:
+                return "MAT3";
+            case Accessor::Type::MAT4:
+                return "MAT4";
+            }
+
+            LL_WARNS("GLTF") << "Unknown accessor type: " << (S32)type << LL_ENDL;
+            llassert(false);
+
+            return "SCALAR";
+        }
+    }
+}
+
+void Buffer::erase(Asset& asset, S32 offset, S32 length)
+{
+    S32 idx = this - &asset.mBuffers[0];
+
+    mData.erase(mData.begin() + offset, mData.begin() + offset + length);
+
+    llassert(mData.size() <= size_t(INT_MAX));
+    mByteLength = S32(mData.size());
+
+    for (BufferView& view : asset.mBufferViews)
+    {
+        if (view.mBuffer == idx)
+        {
+            if (view.mByteOffset >= offset)
+            {
+                view.mByteOffset -= length;
+            }
+        }
+    }
+}
+
+bool Buffer::prep(Asset& asset)
+{
+    if (mByteLength == 0)
+    {
+        return false;
+    }
+
+    LLUUID id;
+    if (mUri.size() == UUID_STR_SIZE && LLUUID::parseUUID(mUri, &id) && id.notNull())
+    { // loaded from an asset, fetch the buffer data from the asset store
+        LLFileSystem file(id, LLAssetType::AT_GLTF_BIN, LLFileSystem::READ);
+
+        if (mByteLength > file.getSize())
+        {
+            LL_WARNS("GLTF") << "Unexpected glbin size: " << id << " is " << file.getSize() << " bytes, expected " << mByteLength << LL_ENDL;
+            return false;
+        }
+
+        mData.resize(mByteLength);
+        if (!file.read((U8*)mData.data(), mByteLength))
+        {
+            LL_WARNS("GLTF") << "Failed to load buffer data from asset: " << id << LL_ENDL;
+            return false;
+        }
+    }
+    else if (mUri.find("data:") == 0)
+    { // loaded from a data URI, load the texture from the data
+        LL_WARNS() << "Data URIs not yet supported" << LL_ENDL;
+        return false;
+    }
+    else if (!asset.mFilename.empty() &&
+        !mUri.empty()) // <-- uri could be empty if we're loading from .glb
+    {
+        std::string dir = gDirUtilp->getDirName(asset.mFilename);
+        std::string bin_file = dir + gDirUtilp->getDirDelimiter() + mUri;
+
+        std::ifstream file(bin_file, std::ios::binary);
+        if (!file.is_open())
+        {
+            LL_WARNS("GLTF") << "Failed to open file: " << bin_file << LL_ENDL;
+            return false;
+        }
+
+        file.seekg(0, std::ios::end);
+        if (mByteLength > file.tellg())
+        {
+            LL_WARNS("GLTF") << "Unexpected file size: " << bin_file << " is " << file.tellg() << " bytes, expected " << mByteLength << LL_ENDL;
+            return false;
+        }
+        file.seekg(0, std::ios::beg);
+
+        mData.resize(mByteLength);
+        file.read((char*)mData.data(), mData.size());
+    }
+
+    // POSTCONDITION: on success, mData.size == mByteLength
+    llassert(mData.size() == mByteLength);
+    return true;
+}
+
+bool Buffer::save(Asset& asset, const std::string& folder)
+{
+    if (mUri.substr(0, 5) == "data:")
+    {
+        LL_WARNS("GLTF") << "Data URIs not yet supported" << LL_ENDL;
+        return false;
+    }
+
+    std::string bin_file = folder + gDirUtilp->getDirDelimiter();
+
+    if (mUri.empty())
+    {
+        if (mName.empty())
+        {
+            S32 idx = this - &asset.mBuffers[0];
+            mUri = llformat("buffer_%d.bin", idx);
+        }
+        else
+        {
+            mUri = mName + ".bin";
+        }
+    }
+
+    bin_file += mUri;
+
+    std::ofstream file(bin_file, std::ios::binary);
+    if (!file.is_open())
+    {
+        LL_WARNS("GLTF") << "Failed to open file: " << bin_file << LL_ENDL;
+        return false;
+    }
+
+    file.write((char*)mData.data(), mData.size());
+
+    return true;
+}
+
+void Buffer::serialize(object& dst) const
+{
+    write(mName, "name", dst);
+    write(mUri, "uri", dst);
+    write_always(mByteLength, "byteLength", dst);
+};
+
+const Buffer& Buffer::operator=(const Value& src)
+{
+    if (src.is_object())
+    {
+        copy(src, "name", mName);
+        copy(src, "uri", mUri);
+        copy(src, "byteLength", mByteLength);
+
+        // NOTE: DO NOT attempt to handle the uri here.
+        // The uri is a reference to a file that is not loaded until
+        // after the json document is parsed
+    }
     return *this;
 }
 
-const BufferView& BufferView::operator=(const tinygltf::BufferView& src)
+void BufferView::serialize(object& dst) const
 {
-    mBuffer = src.buffer;
-    mByteLength = src.byteLength;
-    mByteOffset = src.byteOffset;
-    mByteStride = src.byteStride;
-    mTarget = src.target;
-    mName = src.name;
+    write_always(mBuffer, "buffer", dst);
+    write_always(mByteLength, "byteLength", dst);
+    write(mByteOffset, "byteOffset", dst, 0);
+    write(mByteStride, "byteStride", dst, 0);
+    write(mTarget, "target", dst, -1);
+    write(mName, "name", dst);
+}
+
+const BufferView& BufferView::operator=(const Value& src)
+{
+    if (src.is_object())
+    {
+        copy(src, "buffer", mBuffer);
+        copy(src, "byteLength", mByteLength);
+        copy(src, "byteOffset", mByteOffset);
+        copy(src, "byteStride", mByteStride);
+        copy(src, "target", mTarget);
+        copy(src, "name", mName);
+    }
     return *this;
 }
 
-const Accessor& Accessor::operator=(const tinygltf::Accessor& src)
+void Accessor::serialize(object& dst) const
 {
-    mBufferView = src.bufferView;
-    mByteOffset = src.byteOffset;
-    mComponentType = src.componentType;
-    mCount = src.count;
-    mType = src.type;
-    mNormalized = src.normalized;
-    mName = src.name;
-    mMax = src.maxValues;
-    mMin = src.minValues;
+    write(mName, "name", dst);
+    write(mBufferView, "bufferView", dst, INVALID_INDEX);
+    write(mByteOffset, "byteOffset", dst, 0);
+    write_always(mComponentType, "componentType", dst);
+    write_always(mCount, "count", dst);
+    write_always(enum_to_gltf_type(mType), "type", dst);
+    write(mNormalized, "normalized", dst, false);
+    write(mMax, "max", dst);
+    write(mMin, "min", dst);
+}
 
+const Accessor& Accessor::operator=(const Value& src)
+{
+    if (src.is_object())
+    {
+        copy(src, "name", mName);
+        copy(src, "bufferView", mBufferView);
+        copy(src, "byteOffset", mByteOffset);
+        copy(src, "componentType", mComponentType);
+        copy(src, "count", mCount);
+        copy(src, "type", mType);
+        copy(src, "normalized", mNormalized);
+        copy(src, "max", mMax);
+        copy(src, "min", mMin);
+    }
     return *this;
 }
 
diff --git a/indra/newview/gltf/accessor.h b/indra/newview/gltf/accessor.h
index 9b8265d8da..ec68c5f624 100644
--- a/indra/newview/gltf/accessor.h
+++ b/indra/newview/gltf/accessor.h
@@ -26,16 +26,16 @@
  * $/LicenseInfo$
  */
 
-#include "../lltinygltfhelper.h"
 #include "llstrider.h"
+#include "boost/json.hpp"
+
+#include "common.h"
 
 // LL GLTF Implementation
 namespace LL
 {
     namespace GLTF
     {
-        class Asset;
-
         constexpr S32 INVALID_INDEX = -1;
 
         class Buffer
@@ -44,52 +44,77 @@ namespace LL
             std::vector<U8> mData;
             std::string mName;
             std::string mUri;
+            S32 mByteLength = 0;
+
+            // erase the given range from this buffer.
+            // also updates all buffer views in given asset that reference this buffer
+            void erase(Asset& asset, S32 offset, S32 length);
+
+            bool prep(Asset& asset);
 
-            const Buffer& operator=(const tinygltf::Buffer& src);
+            void serialize(boost::json::object& obj) const;
+            const Buffer& operator=(const Value& value);
+
+            bool save(Asset& asset, const std::string& folder);
         };
 
         class BufferView
         {
         public:
             S32 mBuffer = INVALID_INDEX;
-            S32 mByteLength;
-            S32 mByteOffset;
-            S32 mByteStride;
-            S32 mTarget;
-            S32 mComponentType;
+            S32 mByteLength = 0;
+            S32 mByteOffset = 0;
+            S32 mByteStride = 0;
+            S32 mTarget = -1;
 
             std::string mName;
 
-            const BufferView& operator=(const tinygltf::BufferView& src);
-            
+            void serialize(boost::json::object& obj) const;
+            const BufferView& operator=(const Value& value);
         };
-        
+
         class Accessor
         {
         public:
-            S32 mBufferView = INVALID_INDEX;
-            S32 mByteOffset;
-            S32 mComponentType;
-            S32 mCount;
-            std::vector<double> mMax;
-            std::vector<double> mMin;
+            enum class Type : U8
+            {
+                SCALAR,
+                VEC2,
+                VEC3,
+                VEC4,
+                MAT2,
+                MAT3,
+                MAT4
+            };
 
-            enum class Type : S32
+            enum class ComponentType : U32
             {
-                SCALAR = TINYGLTF_TYPE_SCALAR,
-                VEC2 = TINYGLTF_TYPE_VEC2,
-                VEC3 = TINYGLTF_TYPE_VEC3,
-                VEC4 = TINYGLTF_TYPE_VEC4,
-                MAT2 = TINYGLTF_TYPE_MAT2,
-                MAT3 = TINYGLTF_TYPE_MAT3,
-                MAT4 = TINYGLTF_TYPE_MAT4
+                BYTE = 5120,
+                UNSIGNED_BYTE = 5121,
+                SHORT = 5122,
+                UNSIGNED_SHORT = 5123,
+                UNSIGNED_INT = 5125,
+                FLOAT = 5126
             };
 
-            S32 mType;
-            bool mNormalized;
+            std::vector<double> mMax;
+            std::vector<double> mMin;
             std::string mName;
+            S32 mBufferView = INVALID_INDEX;
+            S32 mByteOffset = 0;
+            ComponentType mComponentType = ComponentType::BYTE;
+            S32 mCount = 0;
+            Type mType = Type::SCALAR;
+            bool mNormalized = false;
 
-            const Accessor& operator=(const tinygltf::Accessor& src);
+            void serialize(boost::json::object& obj) const;
+            const Accessor& operator=(const Value& value);
         };
+
+        // convert from "SCALAR", "VEC2", etc to Accessor::Type
+        Accessor::Type gltf_type_to_enum(const std::string& type);
+
+        // convert from Accessor::Type to "SCALAR", "VEC2", etc
+        std::string enum_to_gltf_type(Accessor::Type type);
     }
 }
diff --git a/indra/newview/gltf/animation.cpp b/indra/newview/gltf/animation.cpp
index da6d02b356..3dff67d746 100644
--- a/indra/newview/gltf/animation.cpp
+++ b/indra/newview/gltf/animation.cpp
@@ -28,10 +28,12 @@
 
 #include "asset.h"
 #include "buffer_util.h"
+#include "../llskinningutil.h"
 
 using namespace LL::GLTF;
+using namespace boost::json;
 
-void Animation::allocateGLResources(Asset& asset)
+bool Animation::prep(Asset& asset)
 {
     if (!mSamplers.empty())
     {
@@ -39,7 +41,10 @@ void Animation::allocateGLResources(Asset& asset)
         mMaxTime = -FLT_MAX;
         for (auto& sampler : mSamplers)
         {
-            sampler.allocateGLResources(asset);
+            if (!sampler.prep(asset))
+            {
+                return false;
+            }
             mMinTime = llmin(sampler.mMinTime, mMinTime);
             mMaxTime = llmax(sampler.mMaxTime, mMaxTime);
         }
@@ -51,13 +56,29 @@ void Animation::allocateGLResources(Asset& asset)
 
     for (auto& channel : mRotationChannels)
     {
-        channel.allocateGLResources(asset, mSamplers[channel.mSampler]);
+        if (!channel.prep(asset, mSamplers[channel.mSampler]))
+        {
+            return false;
+        }
     }
 
     for (auto& channel : mTranslationChannels)
     {
-        channel.allocateGLResources(asset, mSamplers[channel.mSampler]);
+        if (!channel.prep(asset, mSamplers[channel.mSampler]))
+        {
+            return false;
+        }
+    }
+
+    for (auto& channel : mScaleChannels)
+    {
+        if (!channel.prep(asset, mSamplers[channel.mSampler]))
+        {
+            return false;
+        }
     }
+
+    return true;
 }
 
 void Animation::update(Asset& asset, F32 dt)
@@ -69,23 +90,41 @@ void Animation::update(Asset& asset, F32 dt)
 
 void Animation::apply(Asset& asset, float time)
 {
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+
     // convert time to animation loop time
     time = fmod(time, mMaxTime - mMinTime) + mMinTime;
 
     // apply each channel
-    for (auto& channel : mRotationChannels)
     {
-        channel.apply(asset, mSamplers[channel.mSampler], time);
+        LL_PROFILE_ZONE_NAMED_CATEGORY_GLTF("gltfanim - rotation");
+
+        for (auto& channel : mRotationChannels)
+        {
+            channel.apply(asset, mSamplers[channel.mSampler], time);
+        }
     }
 
-    for (auto& channel : mTranslationChannels)
     {
-        channel.apply(asset, mSamplers[channel.mSampler], time);
+        LL_PROFILE_ZONE_NAMED_CATEGORY_GLTF("gltfanim - translation");
+
+        for (auto& channel : mTranslationChannels)
+        {
+            channel.apply(asset, mSamplers[channel.mSampler], time);
+        }
     }
-};
 
+    {
+        LL_PROFILE_ZONE_NAMED_CATEGORY_GLTF("gltfanim - scale");
+
+        for (auto& channel : mScaleChannels)
+        {
+            channel.apply(asset, mSamplers[channel.mSampler], time);
+        }
+    }
+};
 
-void Animation::Sampler::allocateGLResources(Asset& asset)
+bool Animation::Sampler::prep(Asset& asset)
 {
     Accessor& accessor = asset.mAccessors[mInput];
     mMinTime = accessor.mMin[0];
@@ -95,10 +134,80 @@ void Animation::Sampler::allocateGLResources(Asset& asset)
 
     LLStrider<F32> frame_times = mFrameTimes.data();
     copy(asset, accessor, frame_times);
+
+    return true;
+}
+
+
+void Animation::Sampler::serialize(object& obj) const
+{
+    write(mInput, "input", obj, INVALID_INDEX);
+    write(mOutput, "output", obj, INVALID_INDEX);
+    write(mInterpolation, "interpolation", obj, std::string("LINEAR"));
+    write(mMinTime, "min_time", obj);
+    write(mMaxTime, "max_time", obj);
+}
+
+const Animation::Sampler& Animation::Sampler::operator=(const Value& src)
+{
+    if (src.is_object())
+    {
+        copy(src, "input", mInput);
+        copy(src, "output", mOutput);
+        copy(src, "interpolation", mInterpolation);
+        copy(src, "min_time", mMinTime);
+        copy(src, "max_time", mMaxTime);
+    }
+    return *this;
+}
+
+bool Animation::Channel::Target::operator==(const Channel::Target& rhs) const
+{
+    return mNode == rhs.mNode && mPath == rhs.mPath;
+}
+
+bool Animation::Channel::Target::operator!=(const Channel::Target& rhs) const
+{
+    return !(*this == rhs);
+}
+
+void Animation::Channel::Target::serialize(object& obj) const
+{
+    write(mNode, "node", obj, INVALID_INDEX);
+    write(mPath, "path", obj);
+}
+
+const Animation::Channel::Target& Animation::Channel::Target::operator=(const Value& src)
+{
+    if (src.is_object())
+    {
+        copy(src, "node", mNode);
+        copy(src, "path", mPath);
+    }
+    return *this;
+}
+
+void Animation::Channel::serialize(object& obj) const
+{
+    write(mSampler, "sampler", obj, INVALID_INDEX);
+    write(mTarget, "target", obj);
+}
+
+const Animation::Channel& Animation::Channel::operator=(const Value& src)
+{
+    if (src.is_object())
+    {
+        copy(src, "sampler", mSampler);
+        copy(src, "target", mTarget);
+    }
+    return *this;
 }
 
 void Animation::Sampler::getFrameInfo(Asset& asset, F32 time, U32& frameIndex, F32& t)
 {
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+    llassert(mFrameTimes.size() > 1); // if there is only one frame, there is no need to interpolate
+
     if (time < mMinTime)
     {
         frameIndex = 0;
@@ -106,40 +215,42 @@ void Animation::Sampler::getFrameInfo(Asset& asset, F32 time, U32& frameIndex, F
         return;
     }
 
-    if (mFrameTimes.size() > 1)
+    frameIndex = U32(mFrameTimes.size()) - 2;
+    t = 1.f;
+
+    if (time > mMaxTime)
     {
-        if (time > mMaxTime)
-        {
-            frameIndex = mFrameTimes.size() - 2;
-            t = 1.0f;
-            return;
-        }
+        return;
+    }
+
+    if (time < mLastFrameTime)
+    {
+        mLastFrameIndex = 0;
+    }
+
+    mLastFrameTime = time;
 
-        frameIndex = mFrameTimes.size() - 2;
-        t = 1.f;
+    U32 idx = mLastFrameIndex;
 
-        for (U32 i = 0; i < mFrameTimes.size() - 1; i++)
+    for (U32 i = idx; i < (U32)mFrameTimes.size() - 1; i++)
+    {
+        if (time >= mFrameTimes[i] && time < mFrameTimes[i + 1])
         {
-            if (time >= mFrameTimes[i] && time < mFrameTimes[i + 1])
-            {
-                frameIndex = i;
-                t = (time - mFrameTimes[i]) / (mFrameTimes[i + 1] - mFrameTimes[i]);
-                return;
-            }
+            frameIndex = i;
+            t = (time - mFrameTimes[i]) / (mFrameTimes[i + 1] - mFrameTimes[i]);
+            mLastFrameIndex = frameIndex;
+            return;
         }
     }
-    else
-    {
-        frameIndex = 0;
-        t = 0.0f;
-    }
 }
 
-void Animation::RotationChannel::allocateGLResources(Asset& asset, Animation::Sampler& sampler)
+bool Animation::RotationChannel::prep(Asset& asset, Animation::Sampler& sampler)
 {
     Accessor& accessor = asset.mAccessors[sampler.mOutput];
 
     copy(asset, accessor, mRotations);
+
+    return true;
 }
 
 void Animation::RotationChannel::apply(Asset& asset, Sampler& sampler, F32 time)
@@ -149,30 +260,30 @@ void Animation::RotationChannel::apply(Asset& asset, Sampler& sampler, F32 time)
 
     Node& node = asset.mNodes[mTarget.mNode];
 
-    sampler.getFrameInfo(asset, time, frameIndex, t);
-
-    if (sampler.mFrameTimes.size() == 1)
+    if (sampler.mFrameTimes.size() < 2)
     {
         node.setRotation(mRotations[0]);
     }
     else
     {
+        sampler.getFrameInfo(asset, time, frameIndex, t);
+
         // interpolate
-        LLQuaternion q0(mRotations[frameIndex].get_value());
-        LLQuaternion q1(mRotations[frameIndex + 1].get_value());
+        quat qf = glm::slerp(mRotations[frameIndex], mRotations[frameIndex + 1], t);
 
-        LLQuaternion qf = slerp(t, q0, q1);
+        qf = glm::normalize(qf);
 
-        qf.normalize();
-        node.setRotation(glh::quaternionf(qf.mQ));
+        node.setRotation(qf);
     }
 }
 
-void Animation::TranslationChannel::allocateGLResources(Asset& asset, Animation::Sampler& sampler)
+bool Animation::TranslationChannel::prep(Asset& asset, Animation::Sampler& sampler)
 {
     Accessor& accessor = asset.mAccessors[sampler.mOutput];
 
     copy(asset, accessor, mTranslations);
+
+    return true;
 }
 
 void Animation::TranslationChannel::apply(Asset& asset, Sampler& sampler, F32 time)
@@ -182,29 +293,31 @@ void Animation::TranslationChannel::apply(Asset& asset, Sampler& sampler, F32 ti
 
     Node& node = asset.mNodes[mTarget.mNode];
 
-    sampler.getFrameInfo(asset, time, frameIndex, t);
-
-    if (sampler.mFrameTimes.size() == 1)
+    if (sampler.mFrameTimes.size() < 2)
     {
         node.setTranslation(mTranslations[0]);
     }
     else
     {
+        sampler.getFrameInfo(asset, time, frameIndex, t);
+
         // interpolate
-        const glh::vec3f& v0 = mTranslations[frameIndex];
-        const glh::vec3f& v1 = mTranslations[frameIndex + 1];
+        const vec3& v0 = mTranslations[frameIndex];
+        const vec3& v1 = mTranslations[frameIndex + 1];
 
-        glh::vec3f vf = v0 + t * (v1 - v0);
+        vec3 vf = v0 + t * (v1 - v0);
 
         node.setTranslation(vf);
     }
 }
 
-void Animation::ScaleChannel::allocateGLResources(Asset& asset, Animation::Sampler& sampler)
+bool Animation::ScaleChannel::prep(Asset& asset, Animation::Sampler& sampler)
 {
     Accessor& accessor = asset.mAccessors[sampler.mOutput];
 
     copy(asset, accessor, mScales);
+
+    return true;
 }
 
 void Animation::ScaleChannel::apply(Asset& asset, Sampler& sampler, F32 time)
@@ -214,74 +327,163 @@ void Animation::ScaleChannel::apply(Asset& asset, Sampler& sampler, F32 time)
 
     Node& node = asset.mNodes[mTarget.mNode];
 
-    sampler.getFrameInfo(asset, time, frameIndex, t);
-
-    if (sampler.mFrameTimes.size() == 1)
+    if (sampler.mFrameTimes.size() < 2)
     {
         node.setScale(mScales[0]);
     }
     else
     {
+        sampler.getFrameInfo(asset, time, frameIndex, t);
+
         // interpolate
-        const glh::vec3f& v0 = mScales[frameIndex];
-        const glh::vec3f& v1 = mScales[frameIndex + 1];
+        const vec3& v0 = mScales[frameIndex];
+        const vec3& v1 = mScales[frameIndex + 1];
 
-        glh::vec3f vf = v0 + t * (v1 - v0);
+        vec3 vf = v0 + t * (v1 - v0);
 
         node.setScale(vf);
     }
 }
 
-const Animation& Animation::operator=(const tinygltf::Animation& src)
+void Animation::serialize(object& obj) const
 {
-    mName = src.name;
+    write(mName, "name", obj);
+    write(mSamplers, "samplers", obj);
 
-    mSamplers.resize(src.samplers.size());
-    for (U32 i = 0; i < src.samplers.size(); ++i)
-    {
-        mSamplers[i] = src.samplers[i];
-    }
+    std::vector<Channel> channels;
+    channels.insert(channels.end(), mRotationChannels.begin(), mRotationChannels.end());
+    channels.insert(channels.end(), mTranslationChannels.begin(), mTranslationChannels.end());
+    channels.insert(channels.end(), mScaleChannels.begin(), mScaleChannels.end());
 
-    for (U32 i = 0; i < src.channels.size(); ++i)
+    write(channels, "channels", obj);
+}
+
+const Animation& Animation::operator=(const Value& src)
+{
+    if (src.is_object())
     {
-        if (src.channels[i].target_path == "rotation")
-        {
-            mRotationChannels.push_back(RotationChannel());
-            mRotationChannels.back() = src.channels[i];
-        }
+        const object& obj = src.as_object();
 
-        if (src.channels[i].target_path == "translation")
-        {
-            mTranslationChannels.push_back(TranslationChannel());
-            mTranslationChannels.back() = src.channels[i];
-        }
+        copy(obj, "name", mName);
+        copy(obj, "samplers", mSamplers);
+
+        // make a temporory copy of generic channels
+        std::vector<Channel> channels;
+        copy(obj, "channels", channels);
 
-        if (src.channels[i].target_path == "scale")
+        // break up into channel specific implementations
+        for (auto& channel: channels)
         {
-            mScaleChannels.push_back(ScaleChannel());
-            mScaleChannels.back() = src.channels[i];
+            if (channel.mTarget.mPath == "rotation")
+            {
+                mRotationChannels.push_back(channel);
+            }
+            else if (channel.mTarget.mPath == "translation")
+            {
+                mTranslationChannels.push_back(channel);
+            }
+            else if (channel.mTarget.mPath == "scale")
+            {
+                mScaleChannels.push_back(channel);
+            }
         }
     }
-
     return *this;
 }
 
-void Skin::allocateGLResources(Asset& asset)
+Skin::~Skin()
+{
+    if (mUBO)
+    {
+        glDeleteBuffers(1, &mUBO);
+    }
+}
+
+void Skin::uploadMatrixPalette(Asset& asset)
+{
+    // prepare matrix palette
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+
+    U32 max_joints = LLSkinningUtil::getMaxGLTFJointCount();
+
+    if (mUBO == 0)
+    {
+        glGenBuffers(1, &mUBO);
+    }
+
+    size_t joint_count = llmin<size_t>(max_joints, mJoints.size());
+
+    std::vector<mat4> t_mp;
+
+    t_mp.resize(joint_count);
+
+    for (U32 i = 0; i < joint_count; ++i)
+    {
+        Node& joint = asset.mNodes[mJoints[i]];
+        // build matrix palette in asset space
+        t_mp[i] = joint.mAssetMatrix * mInverseBindMatricesData[i];
+    }
+
+    std::vector<F32> glmp;
+
+    glmp.resize(joint_count * 12);
+
+    F32* mp = glmp.data();
+
+    for (U32 i = 0; i < joint_count; ++i)
+    {
+        F32* m = glm::value_ptr(t_mp[i]);
+
+        U32 idx = i * 12;
+
+        mp[idx + 0] = m[0];
+        mp[idx + 1] = m[1];
+        mp[idx + 2] = m[2];
+        mp[idx + 3] = m[12];
+
+        mp[idx + 4] = m[4];
+        mp[idx + 5] = m[5];
+        mp[idx + 6] = m[6];
+        mp[idx + 7] = m[13];
+
+        mp[idx + 8] = m[8];
+        mp[idx + 9] = m[9];
+        mp[idx + 10] = m[10];
+        mp[idx + 11] = m[14];
+    }
+
+    glBindBuffer(GL_UNIFORM_BUFFER, mUBO);
+    glBufferData(GL_UNIFORM_BUFFER, glmp.size() * sizeof(F32), glmp.data(), GL_STREAM_DRAW);
+    glBindBuffer(GL_UNIFORM_BUFFER, 0);
+}
+
+bool Skin::prep(Asset& asset)
 {
     if (mInverseBindMatrices != INVALID_INDEX)
     {
         Accessor& accessor = asset.mAccessors[mInverseBindMatrices];
         copy(asset, accessor, mInverseBindMatricesData);
     }
+
+    return true;
 }
 
-const Skin& Skin::operator=(const tinygltf::Skin& src)
+const Skin& Skin::operator=(const Value& src)
 {
-    mName = src.name;
-    mSkeleton = src.skeleton;
-    mInverseBindMatrices = src.inverseBindMatrices;
-    mJoints = src.joints;
-
+    if (src.is_object())
+    {
+        copy(src, "name", mName);
+        copy(src, "skeleton", mSkeleton);
+        copy(src, "inverseBindMatrices", mInverseBindMatrices);
+        copy(src, "joints", mJoints);
+    }
     return *this;
 }
 
+void Skin::serialize(object& obj) const
+{
+    write(mInverseBindMatrices, "inverseBindMatrices", obj, INVALID_INDEX);
+    write(mJoints, "joints", obj);
+    write(mName, "name", obj);
+    write(mSkeleton, "skeleton", obj, INVALID_INDEX);
+}
diff --git a/indra/newview/gltf/animation.h b/indra/newview/gltf/animation.h
index 869eae963a..ab8839470a 100644
--- a/indra/newview/gltf/animation.h
+++ b/indra/newview/gltf/animation.h
@@ -27,7 +27,6 @@
  */
 
 #include "accessor.h"
-
 // LL GLTF Implementation
 namespace LL
 {
@@ -50,16 +49,13 @@ namespace LL
                 S32 mOutput = INVALID_INDEX;
                 std::string mInterpolation;
 
-                void allocateGLResources(Asset& asset);
+                F32 mLastFrameTime = 0.f;
+                U32 mLastFrameIndex = 0;
 
-                const Sampler& operator=(const tinygltf::AnimationSampler& src)
-                {
-                    mInput = src.input;
-                    mOutput = src.output;
-                    mInterpolation = src.interpolation;
+                bool prep(Asset& asset);
 
-                    return *this;
-                }
+                void serialize(boost::json::object& dst) const;
+                const Sampler& operator=(const Value& value);
 
                 // get the frame index and time for the specified time
                 // asset -- the asset to reference for Accessors
@@ -77,40 +73,33 @@ namespace LL
                 public:
                     S32 mNode = INVALID_INDEX;
                     std::string mPath;
+
+                    bool operator==(const Target& other) const;
+                    bool operator!=(const Target& other) const;
+
+                    void serialize(boost::json::object& dst) const;
+                    const Target& operator=(const Value& value);
                 };
 
                 S32 mSampler = INVALID_INDEX;
                 Target mTarget;
-                std::string mTargetPath;
-                std::string mName;
-
-                const Channel& operator=(const tinygltf::AnimationChannel& src)
-                {
-                    mSampler = src.sampler;
-
-                    mTarget.mNode = src.target_node;
-                    mTarget.mPath = src.target_path;
-
-                    return *this;
-                }
 
+                void serialize(boost::json::object& dst) const;
+                const Channel& operator=(const Value& value);
             };
 
             class RotationChannel : public Channel
             {
             public:
-                std::vector<glh::quaternionf> mRotations;
+                RotationChannel() = default;
+                RotationChannel(const Channel& channel) : Channel(channel) {}
 
-                const RotationChannel& operator=(const tinygltf::AnimationChannel& src)
-                {
-                    Channel::operator=(src);
-                    return *this;
-                }
+                std::vector<quat> mRotations;
 
                 // prepare data needed for rendering
                 // asset -- asset to reference for Accessors
                 // sampler -- Sampler associated with this channel
-                void allocateGLResources(Asset& asset, Sampler& sampler);
+                bool prep(Asset& asset, Sampler& sampler);
 
                 void apply(Asset& asset, Sampler& sampler, F32 time);
             };
@@ -118,18 +107,15 @@ namespace LL
             class TranslationChannel : public Channel
             {
             public:
-                std::vector<glh::vec3f> mTranslations;
+                TranslationChannel() = default;
+                TranslationChannel(const Channel& channel) : Channel(channel) {}
 
-                const TranslationChannel& operator=(const tinygltf::AnimationChannel& src)
-                {
-                    Channel::operator=(src);
-                    return *this;
-                }
+                std::vector<vec3> mTranslations;
 
                 // prepare data needed for rendering
                 // asset -- asset to reference for Accessors
                 // sampler -- Sampler associated with this channel
-                void allocateGLResources(Asset& asset, Sampler& sampler);
+                bool prep(Asset& asset, Sampler& sampler);
 
                 void apply(Asset& asset, Sampler& sampler, F32 time);
             };
@@ -137,18 +123,15 @@ namespace LL
             class ScaleChannel : public Channel
             {
             public:
-                std::vector<glh::vec3f> mScales;
+                ScaleChannel() = default;
+                ScaleChannel(const Channel& channel) : Channel(channel) {}
 
-                const ScaleChannel& operator=(const tinygltf::AnimationChannel& src)
-                {
-                    Channel::operator=(src);
-                    return *this;
-                }
+                std::vector<vec3> mScales;
 
                 // prepare data needed for rendering
                 // asset -- asset to reference for Accessors
                 // sampler -- Sampler associated with this channel
-                void allocateGLResources(Asset& asset, Sampler& sampler);
+                bool prep(Asset& asset, Sampler& sampler);
 
                 void apply(Asset& asset, Sampler& sampler, F32 time);
             };
@@ -159,7 +142,7 @@ namespace LL
             // min/max time values for all samplers combined
             F32 mMinTime = 0.f;
             F32 mMaxTime = 0.f;
-            
+
             // current time of the animation
             F32 mTime = 0.f;
 
@@ -167,9 +150,10 @@ namespace LL
             std::vector<TranslationChannel> mTranslationChannels;
             std::vector<ScaleChannel> mScaleChannels;
 
-            const Animation& operator=(const tinygltf::Animation& src);
-            
-            void allocateGLResources(Asset& asset);
+            void serialize(boost::json::object& dst) const;
+            const Animation& operator=(const Value& value);
+
+            bool prep(Asset& asset);
 
             void update(Asset& asset, float dt);
 
diff --git a/indra/newview/gltf/asset.cpp b/indra/newview/gltf/asset.cpp
index 313e82bf01..a454e68a92 100644
--- a/indra/newview/gltf/asset.cpp
+++ b/indra/newview/gltf/asset.cpp
@@ -30,48 +30,81 @@
 #include "llvolumeoctree.h"
 #include "../llviewershadermgr.h"
 #include "../llviewercontrol.h"
+#include "../llviewertexturelist.h"
+#include "../pipeline.h"
+#include "buffer_util.h"
+#include <boost/url.hpp>
+#include "llimagejpeg.h"
+#include "../llskinningutil.h"
 
 using namespace LL::GLTF;
+using namespace boost::json;
 
-void Scene::updateTransforms(Asset& asset)
+
+namespace LL
 {
-    LLMatrix4a identity;
-    identity.setIdentity();
-    for (auto& nodeIndex : mNodes)
+    namespace GLTF
     {
-        Node& node = asset.mNodes[nodeIndex];
-        node.updateTransforms(asset, identity);
+        static std::unordered_set<std::string> ExtensionsSupported = {
+            "KHR_materials_unlit",
+            "KHR_texture_transform"
+        };
+
+        Material::AlphaMode gltf_alpha_mode_to_enum(const std::string& alpha_mode)
+        {
+            if (alpha_mode == "OPAQUE")
+            {
+                return Material::AlphaMode::OPAQUE;
+            }
+            else if (alpha_mode == "MASK")
+            {
+                return Material::AlphaMode::MASK;
+            }
+            else if (alpha_mode == "BLEND")
+            {
+                return Material::AlphaMode::BLEND;
+            }
+            else
+            {
+                return Material::AlphaMode::OPAQUE;
+            }
+        }
+
+        std::string enum_to_gltf_alpha_mode(Material::AlphaMode alpha_mode)
+        {
+            switch (alpha_mode)
+            {
+            case Material::AlphaMode::OPAQUE:
+                return "OPAQUE";
+            case Material::AlphaMode::MASK:
+                return "MASK";
+            case Material::AlphaMode::BLEND:
+                return "BLEND";
+            default:
+                return "OPAQUE";
+            }
+        }
     }
 }
 
-void Scene::updateRenderTransforms(Asset& asset, const LLMatrix4a& modelview)
+void Scene::updateTransforms(Asset& asset)
 {
+    mat4 identity = glm::identity<mat4>();
+
     for (auto& nodeIndex : mNodes)
     {
         Node& node = asset.mNodes[nodeIndex];
-        node.updateRenderTransforms(asset, modelview);
+        node.updateTransforms(asset, identity);
     }
 }
 
-void Node::updateRenderTransforms(Asset& asset, const LLMatrix4a& modelview)
+void Node::updateTransforms(Asset& asset, const mat4& parentMatrix)
 {
-    matMul(mMatrix, modelview, mRenderMatrix);
-
-    for (auto& childIndex : mChildren)
-    {
-        Node& child = asset.mNodes[childIndex];
-        child.updateRenderTransforms(asset, mRenderMatrix);
-    }
-}
+    makeMatrixValid();
+    mAssetMatrix = parentMatrix * mMatrix;
 
-LLMatrix4a inverse(const LLMatrix4a& mat);
+    mAssetMatrixInv = glm::inverse(mAssetMatrix);
 
-void Node::updateTransforms(Asset& asset, const LLMatrix4a& parentMatrix)
-{
-    makeMatrixValid();
-    matMul(mMatrix, parentMatrix, mAssetMatrix);
-    mAssetMatrixInv = inverse(mAssetMatrix);
-    
     S32 my_index = this - &asset.mNodes[0];
 
     for (auto& childIndex : mChildren)
@@ -84,32 +117,119 @@ void Node::updateTransforms(Asset& asset, const LLMatrix4a& parentMatrix)
 
 void Asset::updateTransforms()
 {
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
     for (auto& scene : mScenes)
     {
         scene.updateTransforms(*this);
     }
+
+    uploadTransforms();
 }
 
-void Asset::updateRenderTransforms(const LLMatrix4a& modelview)
+void Asset::uploadTransforms()
 {
-#if 0
-    // traverse hierarchy and update render transforms from scratch
-    for (auto& scene : mScenes)
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+    // prepare matrix palette
+    U32 max_nodes = LLSkinningUtil::getMaxGLTFJointCount();
+
+    size_t node_count = llmin<size_t>(max_nodes, mNodes.size());
+
+    std::vector<mat4> t_mp;
+
+    t_mp.resize(node_count);
+
+    for (U32 i = 0; i < node_count; ++i)
     {
-        scene.updateRenderTransforms(*this, modelview);
+        Node& node = mNodes[i];
+        // build matrix palette in asset space
+        t_mp[i] = node.mAssetMatrix;
     }
-#else
-    // use mAssetMatrix to update render transforms from node list
-    for (auto& node : mNodes)
+
+    std::vector<F32> glmp;
+
+    glmp.resize(node_count * 12);
+
+    F32* mp = glmp.data();
+
+    for (U32 i = 0; i < node_count; ++i)
     {
-        //if (node.mMesh != INVALID_INDEX)
-        {
-            matMul(node.mAssetMatrix, modelview, node.mRenderMatrix);
-        }
+        F32* m = glm::value_ptr(t_mp[i]);
+
+        U32 idx = i * 12;
+
+        mp[idx + 0] = m[0];
+        mp[idx + 1] = m[1];
+        mp[idx + 2] = m[2];
+        mp[idx + 3] = m[12];
+
+        mp[idx + 4] = m[4];
+        mp[idx + 5] = m[5];
+        mp[idx + 6] = m[6];
+        mp[idx + 7] = m[13];
+
+        mp[idx + 8] = m[8];
+        mp[idx + 9] = m[9];
+        mp[idx + 10] = m[10];
+        mp[idx + 11] = m[14];
     }
 
-#endif
+    if (mNodesUBO == 0)
+    {
+        glGenBuffers(1, &mNodesUBO);
+    }
 
+    glBindBuffer(GL_UNIFORM_BUFFER, mNodesUBO);
+    glBufferData(GL_UNIFORM_BUFFER, glmp.size() * sizeof(F32), glmp.data(), GL_STREAM_DRAW);
+    glBindBuffer(GL_UNIFORM_BUFFER, 0);
+}
+
+void Asset::uploadMaterials()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+    // see pbrmetallicroughnessV.glsl for the layout of the material UBO
+    std::vector<vec4> md;
+
+    U32 material_size = sizeof(vec4) * 12;
+    U32 max_materials = gGLManager.mMaxUniformBlockSize / material_size;
+
+    U32 mat_count = (U32)mMaterials.size();
+    mat_count = llmin(mat_count, max_materials);
+
+    md.resize(mat_count * 12);
+
+    for (U32 i = 0; i < mat_count*12; i += 12)
+    {
+        Material& material = mMaterials[i/12];
+
+        // add texture transforms and UV indices
+        material.mPbrMetallicRoughness.mBaseColorTexture.mTextureTransform.getPacked(&md[i+0]);
+        md[i + 1].g = (F32)material.mPbrMetallicRoughness.mBaseColorTexture.getTexCoord();
+        material.mNormalTexture.mTextureTransform.getPacked(&md[i + 2]);
+        md[i + 3].g = (F32)material.mNormalTexture.getTexCoord();
+        material.mPbrMetallicRoughness.mMetallicRoughnessTexture.mTextureTransform.getPacked(&md[i+4]);
+        md[i + 5].g = (F32)material.mPbrMetallicRoughness.mMetallicRoughnessTexture.getTexCoord();
+        material.mEmissiveTexture.mTextureTransform.getPacked(&md[i + 6]);
+        md[i + 7].g = (F32)material.mEmissiveTexture.getTexCoord();
+        material.mOcclusionTexture.mTextureTransform.getPacked(&md[i + 8]);
+        md[i + 9].g = (F32)material.mOcclusionTexture.getTexCoord();
+
+        // add material properties
+        F32 min_alpha = material.mAlphaMode == Material::AlphaMode::MASK ? material.mAlphaCutoff : -1.0f;
+        md[i + 10] = vec4(material.mEmissiveFactor, 1.f);
+        md[i + 11] = vec4(0.f,
+            material.mPbrMetallicRoughness.mRoughnessFactor,
+            material.mPbrMetallicRoughness.mMetallicFactor,
+            min_alpha);
+    }
+
+    if (mMaterialsUBO == 0)
+    {
+        glGenBuffers(1, &mMaterialsUBO);
+    }
+
+    glBindBuffer(GL_UNIFORM_BUFFER, mMaterialsUBO);
+    glBufferData(GL_UNIFORM_BUFFER, md.size() * sizeof(vec4), md.data(), GL_STREAM_DRAW);
+    glBindBuffer(GL_UNIFORM_BUFFER, 0);
 }
 
 S32 Asset::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
@@ -133,12 +253,13 @@ S32 Asset::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
     {
         if (node.mMesh != INVALID_INDEX)
         {
-            
             bool newHit = false;
 
+            LLMatrix4a ami;
+            ami.loadu(glm::value_ptr(node.mAssetMatrixInv));
             // transform start and end to this node's local space
-            node.mAssetMatrixInv.affineTransform(start, local_start);
-            node.mAssetMatrixInv.affineTransform(asset_end, local_end);
+            ami.affineTransform(start, local_start);
+            ami.affineTransform(asset_end, local_end);
 
             Mesh& mesh = mMeshes[node.mMesh];
             for (auto& primitive : mesh.mPrimitives)
@@ -161,8 +282,10 @@ S32 Asset::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
 
             if (newHit)
             {
+                LLMatrix4a am;
+                am.loadu(glm::value_ptr(node.mAssetMatrix));
                 // shorten line segment on hit
-                node.mAssetMatrix.affineTransform(p, asset_end); 
+                am.affineTransform(p, asset_end);
 
                 // transform results back to asset space
                 if (intersection)
@@ -172,12 +295,10 @@ S32 Asset::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
 
                 if (normal || tangent)
                 {
-                    LLMatrix4 normalMatrix(node.mAssetMatrixInv.getF32ptr());
-
-                    normalMatrix.transpose();
+                    mat4 normalMatrix = glm::transpose(node.mAssetMatrixInv);
 
                     LLMatrix4a norm_mat;
-                    norm_mat.loadu((F32*)normalMatrix.mMatrix);
+                    norm_mat.loadu(glm::value_ptr(normalMatrix));
 
                     if (normal)
                     {
@@ -219,446 +340,1066 @@ void Node::makeMatrixValid()
 {
     if (!mMatrixValid && mTRSValid)
     {
-        glh::matrix4f rot;
-        mRotation.get_value(rot);
-
-        glh::matrix4f trans;
-        trans.set_translate(mTranslation);
-
-        glh::matrix4f sc;
-        sc.set_scale(mScale);
-
-        glh::matrix4f t;
-        //t = sc * rot * trans; 
-        //t = trans * rot * sc; // best so far, still wrong on negative scale
-        //t = sc * trans * rot;
-        t = trans * sc * rot;
-
-        mMatrix.loadu(t.m);
+        mMatrix = glm::recompose(mScale, mRotation, mTranslation, vec3(0,0,0), vec4(0,0,0,1));
         mMatrixValid = true;
     }
+
+    llassert(mMatrixValid);
 }
 
 void Node::makeTRSValid()
 {
     if (!mTRSValid && mMatrixValid)
     {
-        glh::matrix4f t(mMatrix.getF32ptr());
-
-        glh::vec4f p = t.get_column(3);
-        mTranslation.set_value(p.v[0], p.v[1], p.v[2]);
+        vec3 skew;
+        vec4 perspective;
+        glm::decompose(mMatrix, mScale, mRotation, mTranslation, skew, perspective);
 
-        mScale.set_value(t.get_column(0).length(), t.get_column(1).length(), t.get_column(2).length());
-        mRotation.set_value(t);
         mTRSValid = true;
     }
+
+    llassert(mTRSValid);
 }
 
-void Node::setRotation(const glh::quaternionf& q)
+void Node::setRotation(const quat& q)
 {
     makeTRSValid();
     mRotation = q;
     mMatrixValid = false;
 }
 
-void Node::setTranslation(const glh::vec3f& t)
+void Node::setTranslation(const vec3& t)
 {
     makeTRSValid();
     mTranslation = t;
     mMatrixValid = false;
 }
 
-void Node::setScale(const glh::vec3f& s)
+void Node::setScale(const vec3& s)
 {
     makeTRSValid();
     mScale = s;
     mMatrixValid = false;
 }
 
-const Node& Node::operator=(const tinygltf::Node& src)
+void Node::serialize(object& dst) const
 {
-    F32* dstMatrix = mMatrix.getF32ptr();
+    write(mName, "name", dst);
+    write(mMatrix, "matrix", dst, glm::identity<mat4>());
+    write(mRotation, "rotation", dst, glm::identity<quat>());
+    write(mTranslation, "translation", dst, glm::vec3(0.f, 0.f, 0.f));
+    write(mScale, "scale", dst, vec3(1.f,1.f,1.f));
+    write(mChildren, "children", dst);
+    write(mMesh, "mesh", dst, INVALID_INDEX);
+    write(mSkin, "skin", dst, INVALID_INDEX);
+}
 
-    if (src.matrix.size() == 16)
+const Node& Node::operator=(const Value& src)
+{
+    copy(src, "name", mName);
+    mMatrixValid = copy(src, "matrix", mMatrix);
+    copy(src, "rotation", mRotation);
+    copy(src, "translation", mTranslation);
+    copy(src, "scale", mScale);
+    copy(src, "children", mChildren);
+    copy(src, "mesh", mMesh);
+    copy(src, "skin", mSkin);
+
+    if (!mMatrixValid)
     {
-        // Node has a transformation matrix, just copy it
-        for (U32 i = 0; i < 16; ++i)
+        mTRSValid = true;
+    }
+
+    return *this;
+}
+
+void Image::serialize(object& dst) const
+{
+    write(mUri, "uri", dst);
+    write(mMimeType, "mimeType", dst);
+    write(mBufferView, "bufferView", dst, INVALID_INDEX);
+    write(mName, "name", dst);
+    write(mWidth, "width", dst, -1);
+    write(mHeight, "height", dst, -1);
+    write(mComponent, "component", dst, -1);
+    write(mBits, "bits", dst, -1);
+    write(mPixelType, "pixelType", dst, -1);
+}
+
+const Image& Image::operator=(const Value& src)
+{
+    copy(src, "uri", mUri);
+    copy(src, "mimeType", mMimeType);
+    copy(src, "bufferView", mBufferView);
+    copy(src, "name", mName);
+    copy(src, "width", mWidth);
+    copy(src, "height", mHeight);
+    copy(src, "component", mComponent);
+    copy(src, "bits", mBits);
+    copy(src, "pixelType", mPixelType);
+
+    return *this;
+}
+
+void Asset::update()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+    F32 dt = gFrameTimeSeconds - mLastUpdateTime;
+
+    if (dt > 0.f)
+    {
+        mLastUpdateTime = gFrameTimeSeconds;
+        if (mAnimations.size() > 0)
         {
-            dstMatrix[i] = (F32)src.matrix[i];
+            static LLCachedControl<U32> anim_idx(gSavedSettings, "GLTFAnimationIndex", 0);
+            static LLCachedControl<F32> anim_speed(gSavedSettings, "GLTFAnimationSpeed", 1.f);
+
+            U32 idx = llclamp(anim_idx(), 0U, mAnimations.size() - 1);
+            mAnimations[idx].update(*this, dt*anim_speed);
         }
 
-        mMatrixValid = true;
+        updateTransforms();
+
+        for (auto& skin : mSkins)
+        {
+            skin.uploadMatrixPalette(*this);
+        }
+
+        uploadMaterials();
+
+        {
+            LL_PROFILE_ZONE_NAMED_CATEGORY_GLTF("gltf - addTextureStats");
+
+            for (auto& image : mImages)
+            {
+                if (image.mTexture.notNull())
+                { // HACK - force texture to be loaded full rez
+                    // TODO: calculate actual vsize
+                    image.mTexture->addTextureStats(2048.f * 2048.f);
+                }
+            }
+        }
     }
-    else if (!src.rotation.empty() || !src.translation.empty() || !src.scale.empty())
+}
+
+bool Asset::prep()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+    // check required extensions and fail if not supported
+    bool unsupported = false;
+    for (auto& extension : mExtensionsRequired)
     {
-        // node has rotation/translation/scale, convert to matrix
-        if (src.rotation.size() == 4)
+        if (ExtensionsSupported.find(extension) == ExtensionsSupported.end())
         {
-            mRotation = glh::quaternionf((F32)src.rotation[0], (F32)src.rotation[1], (F32)src.rotation[2], (F32)src.rotation[3]);
+            LL_WARNS() << "Unsupported extension: " << extension << LL_ENDL;
+            unsupported = true;
         }
+    }
+
+    if (unsupported)
+    {
+        return false;
+    }
 
-        if (src.translation.size() == 3)
+    // do buffers first as other resources depend on them
+    for (auto& buffer : mBuffers)
+    {
+        if (!buffer.prep(*this))
         {
-            mTranslation = glh::vec3f((F32)src.translation[0], (F32)src.translation[1], (F32)src.translation[2]);
+            return false;
         }
+    }
 
-        glh::vec3f scale;
-        if (src.scale.size() == 3)
+    for (auto& image : mImages)
+    {
+        if (!image.prep(*this))
         {
-            mScale = glh::vec3f((F32)src.scale[0], (F32)src.scale[1], (F32)src.scale[2]);
+            return false;
         }
-        else
+    }
+
+    for (auto& mesh : mMeshes)
+    {
+        if (!mesh.prep(*this))
         {
-            mScale.set_value(1.f, 1.f, 1.f);
+            return false;
         }
+    }
 
-        mTRSValid = true;
+    for (auto& animation : mAnimations)
+    {
+        if (!animation.prep(*this))
+        {
+            return false;
+        }
     }
-    else
+
+    for (auto& skin : mSkins)
     {
-        // node specifies no transformation, set to identity
-        mMatrix.setIdentity();
+        if (!skin.prep(*this))
+        {
+            return false;
+        }
     }
 
-    mChildren = src.children;
-    mMesh = src.mesh;
-    mSkin = src.skin;
-    mName = src.name;
+    // prepare vertex buffers
 
-    return *this;
-}
+    // material count is number of materials + 1 for default material
+    U32 mat_count = (U32) mMaterials.size() + 1;
 
-void Asset::render(bool opaque, bool rigged)
-{
-    if (rigged)
-    {
-        gGL.loadIdentity();
+    if (LLGLSLShader::sCurBoundShaderPtr == nullptr)
+    { // make sure a shader is bound to satisfy mVertexBuffer->setBuffer
+        gDebugProgram.bind();
     }
 
-    for (auto& node : mNodes)
+    for (S32 double_sided = 0; double_sided < 2; ++double_sided)
     {
-        if (node.mSkin != INVALID_INDEX)
+        RenderData& rd = mRenderData[double_sided];
+        for (U32 i = 0; i < LLGLSLShader::NUM_GLTF_VARIANTS; ++i)
         {
-            if (rigged)
-            {
-                Skin& skin = mSkins[node.mSkin];
-                skin.uploadMatrixPalette(*this, node);
-            }
-            else
-            {
-                //skip static nodes if we're rendering rigged
-                continue;
-            }
+            rd.mBatches[i].resize(mat_count);
         }
-        else if (rigged)
+
+        // for each material
+        for (S32 mat_id = -1; mat_id < (S32)mMaterials.size(); ++mat_id)
         {
-            // skip rigged nodes if we're not rendering rigged
-            continue;
-        }
+            // for each shader variant
+            U32 vertex_count[LLGLSLShader::NUM_GLTF_VARIANTS] = { 0 };
+            U32 index_count[LLGLSLShader::NUM_GLTF_VARIANTS] = { 0 };
 
+            S32 ds_mat = mat_id == -1 ? 0 : mMaterials[mat_id].mDoubleSided;
+            if (ds_mat != double_sided)
+            {
+                continue;
+            }
 
-        if (node.mMesh != INVALID_INDEX)
-        {
-            Mesh& mesh = mMeshes[node.mMesh];
-            for (auto& primitive : mesh.mPrimitives)
+            for (U32 variant = 0; variant < LLGLSLShader::NUM_GLTF_VARIANTS; ++variant)
             {
-                if (!rigged)
-                {
-                    gGL.loadMatrix((F32*)node.mRenderMatrix.mMatrix);
-                }
-                bool cull = true;
-                if (primitive.mMaterial != INVALID_INDEX)
+                U32 attribute_mask = 0;
+                // for each mesh
+                for (auto& mesh : mMeshes)
                 {
-                    Material& material = mMaterials[primitive.mMaterial];
-
-                    if ((material.mMaterial->mAlphaMode == LLGLTFMaterial::ALPHA_MODE_BLEND) == opaque)
+                    // for each primitive
+                    for (auto& primitive : mesh.mPrimitives)
                     {
-                        continue;
+                        if (primitive.mMaterial == mat_id && primitive.mShaderVariant == variant)
+                        {
+                            // accumulate vertex and index counts
+                            primitive.mVertexOffset = vertex_count[variant];
+                            primitive.mIndexOffset = index_count[variant];
+
+                            vertex_count[variant] += primitive.getVertexCount();
+                            index_count[variant] += primitive.getIndexCount();
+
+                            // all primitives of a given variant and material should all have the same attribute mask
+                            llassert(attribute_mask == 0 || primitive.mAttributeMask == attribute_mask);
+                            attribute_mask |= primitive.mAttributeMask;
+                        }
                     }
-                    material.mMaterial->bind();
-                    cull = !material.mMaterial->mDoubleSided;
                 }
-                else
+
+                // allocate vertex buffer and pack it
+                if (vertex_count[variant] > 0)
                 {
-                    if (!opaque)
+                    U32 mat_idx = mat_id + 1;
+                    LLVertexBuffer* vb = new LLVertexBuffer(attribute_mask);
+
+                    rd.mBatches[variant][mat_idx].mVertexBuffer = vb;
+                    vb->allocateBuffer(vertex_count[variant],
+                        index_count[variant] * 2); // hack double index count... TODO: find a better way to indicate 32-bit indices will be used
+                    vb->setBuffer();
+
+                    for (auto& mesh : mMeshes)
                     {
-                        continue;
+                        for (auto& primitive : mesh.mPrimitives)
+                        {
+                            if (primitive.mMaterial == mat_id && primitive.mShaderVariant == variant)
+                            {
+                                primitive.upload(vb);
+                            }
+                        }
                     }
-                    LLFetchedGLTFMaterial::sDefault.bind();
-                }
 
-                LLGLDisable cull_face(!cull ? GL_CULL_FACE : 0);
+                    vb->unmapBuffer();
 
-                primitive.mVertexBuffer->setBuffer();
-                if (primitive.mVertexBuffer->getNumIndices() > 0)
-                {
-                    primitive.mVertexBuffer->draw(primitive.mGLMode, primitive.mVertexBuffer->getNumIndices(), 0);
-                }
-                else
-                {
-                    primitive.mVertexBuffer->drawArrays(primitive.mGLMode, 0, primitive.mVertexBuffer->getNumVerts());
+                    vb->unbind();
                 }
+            }
+        }
+    }
+
+    // sanity check that all primitives have a vertex buffer
+    for (auto& mesh : mMeshes)
+    {
+        for (auto& primitive : mesh.mPrimitives)
+        {
+            llassert(primitive.mVertexBuffer.notNull());
+        }
+    }
 
+    // build render batches
+    for (S32 node_id = 0; node_id < mNodes.size(); ++node_id)
+    {
+        Node& node = mNodes[node_id];
+
+        if (node.mMesh != INVALID_INDEX)
+        {
+            auto& mesh = mMeshes[node.mMesh];
+
+            S32 mat_idx = mesh.mPrimitives[0].mMaterial + 1;
+
+            S32 double_sided = mat_idx == 0 ? 0 : mMaterials[mat_idx - 1].mDoubleSided;
+
+            for (S32 j = 0; j < mesh.mPrimitives.size(); ++j)
+            {
+                auto& primitive = mesh.mPrimitives[j];
+
+                S32 variant = primitive.mShaderVariant;
+
+                RenderData& rd = mRenderData[double_sided];
+                RenderBatch& rb = rd.mBatches[variant][mat_idx];
+
+                rb.mPrimitives.push_back({ j, node_id });
             }
         }
     }
+    return true;
 }
 
-void Asset::renderOpaque()
+Asset::Asset(const Value& src)
 {
-    render(true);
+    *this = src;
 }
 
-void Asset::renderTransparent()
+bool Asset::load(std::string_view filename)
 {
-    render(false);
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+    mFilename = filename;
+    std::string ext = gDirUtilp->getExtension(mFilename);
+
+    std::ifstream file(filename.data(), std::ios::binary);
+    if (file.is_open())
+    {
+        std::string str((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
+        file.close();
+
+        if (ext == "gltf")
+        {
+            Value val = parse(str);
+            *this = val;
+            return prep();
+        }
+        else if (ext == "glb")
+        {
+            return loadBinary(str);
+        }
+        else
+        {
+            LL_WARNS() << "Unsupported file type: " << ext << LL_ENDL;
+            return false;
+        }
+    }
+    else
+    {
+        LL_WARNS() << "Failed to open file: " << filename << LL_ENDL;
+        return false;
+    }
+
+    return false;
 }
 
-void Asset::update()
+bool Asset::loadBinary(const std::string& data)
 {
-    F32 dt = gFrameTimeSeconds - mLastUpdateTime;
+    // load from binary gltf
+    const U8* ptr = (const U8*)data.data();
+    const U8* end = ptr + data.size();
 
-    if (dt > 0.f)
+    if (end - ptr < 12)
     {
-        mLastUpdateTime = gFrameTimeSeconds;
-        if (mAnimations.size() > 0)
-        {
-            static LLCachedControl<U32> anim_idx(gSavedSettings, "GLTFAnimationIndex", 0);
-            static LLCachedControl<F32> anim_speed(gSavedSettings, "GLTFAnimationSpeed", 1.f);
+        LL_WARNS("GLTF") << "GLB file too short" << LL_ENDL;
+        return false;
+    }
 
-            U32 idx = llclamp(anim_idx(), 0U, mAnimations.size() - 1);
-            mAnimations[idx].update(*this, dt*anim_speed);
-        }
+    U32 magic = *(U32*)ptr;
+    ptr += 4;
 
-        updateTransforms();
+    if (magic != 0x46546C67)
+    {
+        LL_WARNS("GLTF") << "Invalid GLB magic" << LL_ENDL;
+        return false;
     }
-}
 
-void Asset::allocateGLResources(const std::string& filename, const tinygltf::Model& model)
-{
-    // do images first as materials may depend on images
-    for (auto& image : mImages)
+    U32 version = *(U32*)ptr;
+    ptr += 4;
+
+    if (version != 2)
     {
-        image.allocateGLResources();
+        LL_WARNS("GLTF") << "Unsupported GLB version" << LL_ENDL;
+        return false;
     }
 
-    // do materials before meshes as meshes may depend on materials
-    for (U32 i = 0; i < mMaterials.size(); ++i)
+    U32 length = *(U32*)ptr;
+    ptr += 4;
+
+    if (length != data.size())
     {
-        mMaterials[i].allocateGLResources(*this);
-        LLTinyGLTFHelper::getMaterialFromModel(filename, model, i, mMaterials[i].mMaterial, mMaterials[i].mName, true);
+        LL_WARNS("GLTF") << "GLB length mismatch" << LL_ENDL;
+        return false;
     }
 
-    for (auto& mesh : mMeshes)
+    U32 chunkLength = *(U32*)ptr;
+    ptr += 4;
+
+    if (end - ptr < chunkLength + 8)
     {
-        mesh.allocateGLResources(*this);
+        LL_WARNS("GLTF") << "GLB chunk too short" << LL_ENDL;
+        return false;
     }
 
-    for (auto& animation : mAnimations)
+    U32 chunkType = *(U32*)ptr;
+    ptr += 4;
+
+    if (chunkType != 0x4E4F534A)
     {
-        animation.allocateGLResources(*this);
+        LL_WARNS("GLTF") << "Invalid GLB chunk type" << LL_ENDL;
+        return false;
     }
 
-    for (auto& skin : mSkins)
+    Value val = parse(std::string_view((const char*)ptr, chunkLength));
+    *this = val;
+
+    if (mBuffers.size() > 0 && mBuffers[0].mUri.empty())
     {
-        skin.allocateGLResources(*this);
+        // load binary chunk
+        ptr += chunkLength;
+
+        if (end - ptr < 8)
+        {
+            LL_WARNS("GLTF") << "GLB chunk too short" << LL_ENDL;
+            return false;
+        }
+
+        chunkLength = *(U32*)ptr;
+        ptr += 4;
+
+        chunkType = *(U32*)ptr;
+        ptr += 4;
+
+        if (chunkType != 0x004E4942)
+        {
+            LL_WARNS("GLTF") << "Invalid GLB chunk type" << LL_ENDL;
+            return false;
+        }
+
+        auto& buffer = mBuffers[0];
+
+        if (ptr + buffer.mByteLength <= end)
+        {
+            buffer.mData.resize(buffer.mByteLength);
+            memcpy(buffer.mData.data(), ptr, buffer.mByteLength);
+            ptr += buffer.mByteLength;
+        }
+        else
+        {
+            LL_WARNS("GLTF") << "Buffer too short" << LL_ENDL;
+            return false;
+        }
     }
+
+    return prep();
 }
 
-const Asset& Asset::operator=(const tinygltf::Model& src)
+const Asset& Asset::operator=(const Value& src)
 {
-    mScenes.resize(src.scenes.size());
-    for (U32 i = 0; i < src.scenes.size(); ++i)
+    if (src.is_object())
     {
-        mScenes[i] = src.scenes[i];
+        const object& obj = src.as_object();
+
+        const auto it = obj.find("asset");
+
+        if (it != obj.end())
+        {
+            const Value& asset = it->value();
+
+            copy(asset, "version", mVersion);
+            copy(asset, "minVersion", mMinVersion);
+            copy(asset, "generator", mGenerator);
+            copy(asset, "copyright", mCopyright);
+            copy(asset, "extras", mExtras);
+        }
+
+        copy(obj, "scene", mScene);
+        copy(obj, "scenes", mScenes);
+        copy(obj, "nodes", mNodes);
+        copy(obj, "meshes", mMeshes);
+        copy(obj, "materials", mMaterials);
+        copy(obj, "buffers", mBuffers);
+        copy(obj, "bufferViews", mBufferViews);
+        copy(obj, "textures", mTextures);
+        copy(obj, "samplers", mSamplers);
+        copy(obj, "images", mImages);
+        copy(obj, "accessors", mAccessors);
+        copy(obj, "animations", mAnimations);
+        copy(obj, "skins", mSkins);
+        copy(obj, "extensionsUsed", mExtensionsUsed);
+        copy(obj, "extensionsRequired", mExtensionsRequired);
     }
 
-    mNodes.resize(src.nodes.size());
-    for (U32 i = 0; i < src.nodes.size(); ++i)
+    return *this;
+}
+
+void Asset::serialize(object& dst) const
+{
+    static const std::string sGenerator = "Linden Lab GLTF Prototype v0.1";
+
+    dst["asset"] = object{};
+    object& asset = dst["asset"].get_object();
+
+    write(mVersion, "version", asset);
+    write(mMinVersion, "minVersion", asset, std::string());
+    write(sGenerator, "generator", asset);
+    write(mScene, "scene", dst, INVALID_INDEX);
+    write(mScenes, "scenes", dst);
+    write(mNodes, "nodes", dst);
+    write(mMeshes, "meshes", dst);
+    write(mMaterials, "materials", dst);
+    write(mBuffers, "buffers", dst);
+    write(mBufferViews, "bufferViews", dst);
+    write(mTextures, "textures", dst);
+    write(mSamplers, "samplers", dst);
+    write(mImages, "images", dst);
+    write(mAccessors, "accessors", dst);
+    write(mAnimations, "animations", dst);
+    write(mSkins, "skins", dst);
+    write(mExtensionsUsed, "extensionsUsed", dst);
+    write(mExtensionsRequired, "extensionsRequired", dst);
+}
+
+bool Asset::save(const std::string& filename)
+{
+    // get folder path
+    std::string folder = gDirUtilp->getDirName(filename);
+
+    // save images
+    for (auto& image : mImages)
     {
-        mNodes[i] = src.nodes[i];
+        if (!image.save(*this, folder))
+        {
+            return false;
+        }
     }
 
-    mMeshes.resize(src.meshes.size());
-    for (U32 i = 0; i < src.meshes.size(); ++i)
+    // save buffers
+    // NOTE: save buffers after saving images as saving images
+    // may remove image data from buffers
+    for (auto& buffer : mBuffers)
     {
-        mMeshes[i] = src.meshes[i];
+        if (!buffer.save(*this, folder))
+        {
+            return false;
+        }
     }
 
-    mMaterials.resize(src.materials.size());
-    for (U32 i = 0; i < src.materials.size(); ++i)
+    // save .gltf
+    object obj;
+    serialize(obj);
+    std::string buffer = boost::json::serialize(obj, {});
+    std::ofstream file(filename, std::ios::binary);
+    file.write(buffer.c_str(), buffer.size());
+
+    return true;
+}
+
+void Asset::eraseBufferView(S32 bufferView)
+{
+    mBufferViews.erase(mBufferViews.begin() + bufferView);
+
+    for (auto& accessor : mAccessors)
     {
-        mMaterials[i] = src.materials[i];
+        if (accessor.mBufferView > bufferView)
+        {
+            accessor.mBufferView--;
+        }
     }
 
-    mBuffers.resize(src.buffers.size());
-    for (U32 i = 0; i < src.buffers.size(); ++i)
+    for (auto& image : mImages)
     {
-        mBuffers[i] = src.buffers[i];
+        if (image.mBufferView > bufferView)
+        {
+            image.mBufferView--;
+        }
     }
 
-    mBufferViews.resize(src.bufferViews.size());
-    for (U32 i = 0; i < src.bufferViews.size(); ++i)
+}
+
+LLViewerFetchedTexture* fetch_texture(const LLUUID& id);
+
+bool Image::prep(Asset& asset)
+{
+    LLUUID id;
+    if (mUri.size() == UUID_STR_SIZE && LLUUID::parseUUID(mUri, &id) && id.notNull())
+    { // loaded from an asset, fetch the texture from the asset system
+        mTexture = fetch_texture(id);
+    }
+    else if (mUri.find("data:") == 0)
+    { // embedded in a data URI, load the texture from the URI
+        LL_WARNS() << "Data URIs not yet supported" << LL_ENDL;
+        return false;
+    }
+    else if (mBufferView != INVALID_INDEX)
+    { // embedded in a buffer, load the texture from the buffer
+        BufferView& bufferView = asset.mBufferViews[mBufferView];
+        Buffer& buffer = asset.mBuffers[bufferView.mBuffer];
+
+        U8* data = buffer.mData.data() + bufferView.mByteOffset;
+
+        mTexture = LLViewerTextureManager::getFetchedTextureFromMemory(data, bufferView.mByteLength, mMimeType);
+
+        if (mTexture.isNull())
+        {
+            LL_WARNS("GLTF") << "Failed to load image from buffer:" << LL_ENDL;
+            LL_WARNS("GLTF") << "  image: " << mName << LL_ENDL;
+            LL_WARNS("GLTF") << "  mimeType: " << mMimeType << LL_ENDL;
+
+            return false;
+        }
+    }
+    else if (!asset.mFilename.empty() && !mUri.empty())
+    { // loaded locally and not embedded, load the texture as a local preview
+        std::string dir = gDirUtilp->getDirName(asset.mFilename);
+        std::string img_file = dir + gDirUtilp->getDirDelimiter() + mUri;
+
+        LLUUID tracking_id = LLLocalBitmapMgr::getInstance()->addUnit(img_file);
+        if (tracking_id.notNull())
+        {
+            LLUUID world_id = LLLocalBitmapMgr::getInstance()->getWorldID(tracking_id);
+            mTexture = LLViewerTextureManager::getFetchedTexture(world_id);
+        }
+        else
+        {
+            LL_WARNS("GLTF") << "Failed to load image from file:" << LL_ENDL;
+            LL_WARNS("GLTF") << "  image: " << mName << LL_ENDL;
+            LL_WARNS("GLTF") << "  file: " << img_file << LL_ENDL;
+
+            return false;
+        }
+    }
+    else
     {
-        mBufferViews[i] = src.bufferViews[i];
+        LL_WARNS("GLTF") << "Failed to load image: " << mName << LL_ENDL;
+        return false;
     }
 
-    mTextures.resize(src.textures.size());
-    for (U32 i = 0; i < src.textures.size(); ++i)
+    return true;
+}
+
+
+void Image::clearData(Asset& asset)
+{
+    if (mBufferView != INVALID_INDEX)
     {
-        mTextures[i] = src.textures[i];
+        // remove data from buffer
+        BufferView& bufferView = asset.mBufferViews[mBufferView];
+        Buffer& buffer = asset.mBuffers[bufferView.mBuffer];
+
+        buffer.erase(asset, bufferView.mByteOffset, bufferView.mByteLength);
+
+        asset.eraseBufferView(mBufferView);
     }
 
-    mSamplers.resize(src.samplers.size());
-    for (U32 i = 0; i < src.samplers.size(); ++i)
+    mBufferView = INVALID_INDEX;
+    mWidth = -1;
+    mHeight = -1;
+    mComponent = -1;
+    mBits = -1;
+    mPixelType = -1;
+    mMimeType = "";
+}
+
+bool Image::save(Asset& asset, const std::string& folder)
+{
+    // NOTE:  this *MUST* be a lossless save
+    // Artists use this to save their work repeatedly, so
+    // adding any compression artifacts here will degrade
+    // images over time.
+    std::string name = mName;
+    std::string error;
+    const std::string& delim = gDirUtilp->getDirDelimiter();
+    if (name.empty())
     {
-        mSamplers[i] = src.samplers[i];
+        S32 idx = this - asset.mImages.data();
+        name = llformat("image_%d", idx);
     }
 
-    mImages.resize(src.images.size());
-    for (U32 i = 0; i < src.images.size(); ++i)
+    if (mBufferView != INVALID_INDEX)
     {
-        mImages[i] = src.images[i];
+        // we have the bytes of the original image, save that out in its
+        // original format
+        BufferView& bufferView = asset.mBufferViews[mBufferView];
+        Buffer& buffer = asset.mBuffers[bufferView.mBuffer];
+
+        std::string extension;
+
+        if (mMimeType == "image/jpeg")
+        {
+            extension = ".jpg";
+        }
+        else if (mMimeType == "image/png")
+        {
+            extension = ".png";
+        }
+        else
+        {
+            error = "Unknown mime type, saved as .bin";
+            extension = ".bin";
+        }
+
+        std::string filename = folder + delim + name + extension;
+
+        // set URI to non-j2c file for now, but later we'll want to reference the j2c hash
+        mUri = name + extension;
+
+        std::ofstream file(filename, std::ios::binary);
+        file.write((const char*)buffer.mData.data() + bufferView.mByteOffset, bufferView.mByteLength);
     }
+    else if (mTexture.notNull())
+    {
+        auto bitmapmgr = LLLocalBitmapMgr::getInstance();
+        if (bitmapmgr->isLocal(mTexture->getID()))
+        {
+            LLUUID tracking_id = bitmapmgr->getTrackingID(mTexture->getID());
+            if (tracking_id.notNull())
+            { // copy original file to destination folder
+                std::string source = bitmapmgr->getFilename(tracking_id);
+                if (gDirUtilp->fileExists(source))
+                {
+                    std::string filename = gDirUtilp->getBaseFileName(source);
+                    std::string dest = folder + delim + filename;
 
-    mAccessors.resize(src.accessors.size());
-    for (U32 i = 0; i < src.accessors.size(); ++i)
+                    LLFile::copy(source, dest);
+                    mUri = filename;
+                }
+                else
+                {
+                    error = "File not found: " + source;
+                }
+            }
+            else
+            {
+                error = "Local image missing.";
+            }
+        }
+        else if (!mUri.empty())
+        {
+            std::string from_dir = gDirUtilp->getDirName(asset.mFilename);
+            std::string base_filename = gDirUtilp->getBaseFileName(mUri);
+            std::string filename = from_dir + delim + base_filename;
+            if (gDirUtilp->fileExists(filename))
+            {
+                std::string dest = folder + delim + base_filename;
+                LLFile::copy(filename, dest);
+                mUri = base_filename;
+            }
+            else
+            {
+                error = "Original image file not found: " + filename;
+            }
+        }
+        else
+        {
+            error = "Image is not a local image and has no uri, cannot save.";
+        }
+    }
+
+    if (!error.empty())
     {
-        mAccessors[i] = src.accessors[i];
+        LL_WARNS("GLTF") << "Failed to save " << name << ": " << error << LL_ENDL;
+        return false;
     }
 
-    mAnimations.resize(src.animations.size());
-    for (U32 i = 0; i < src.animations.size(); ++i)
+    clearData(asset);
+
+    return true;
+}
+
+void TextureInfo::serialize(object& dst) const
+{
+    write(mIndex, "index", dst, INVALID_INDEX);
+    write(mTexCoord, "texCoord", dst, 0);
+    write_extensions(dst, &mTextureTransform, "KHR_texture_transform");
+}
+
+S32 TextureInfo::getTexCoord() const
+{
+    if (mTextureTransform.mPresent && mTextureTransform.mTexCoord != INVALID_INDEX)
     {
-        mAnimations[i] = src.animations[i];
+        return mTextureTransform.mTexCoord;
     }
+    return mTexCoord;
+}
 
-    mSkins.resize(src.skins.size());
-    for (U32 i = 0; i < src.skins.size(); ++i)
+bool Material::isMultiUV() const
+{
+    return mPbrMetallicRoughness.mBaseColorTexture.getTexCoord() != 0 ||
+        mPbrMetallicRoughness.mMetallicRoughnessTexture.getTexCoord() != 0 ||
+        mNormalTexture.getTexCoord() != 0 ||
+        mOcclusionTexture.getTexCoord() != 0 ||
+        mEmissiveTexture.getTexCoord() != 0;
+}
+
+const TextureInfo& TextureInfo::operator=(const Value& src)
+{
+    if (src.is_object())
     {
-        mSkins[i] = src.skins[i];
+        copy(src, "index", mIndex);
+        copy(src, "texCoord", mTexCoord);
+        copy_extensions(src, "KHR_texture_transform", &mTextureTransform);
     }
- 
+
     return *this;
 }
 
-const Material& Material::operator=(const tinygltf::Material& src)
+bool TextureInfo::operator==(const TextureInfo& rhs) const
 {
-    mName = src.name;
-    return *this;
+    return mIndex == rhs.mIndex && mTexCoord == rhs.mTexCoord;
+}
+
+bool TextureInfo::operator!=(const TextureInfo& rhs) const
+{
+    return !(*this == rhs);
 }
 
-void Material::allocateGLResources(Asset& asset)
+void OcclusionTextureInfo::serialize(object& dst) const
 {
-    // allocate material
-    mMaterial = new LLFetchedGLTFMaterial();
+    TextureInfo::serialize(dst);
+    write(mStrength, "strength", dst, 1.f);
 }
 
-const Mesh& Mesh::operator=(const tinygltf::Mesh& src)
+const OcclusionTextureInfo& OcclusionTextureInfo::operator=(const Value& src)
 {
-    mPrimitives.resize(src.primitives.size());
-    for (U32 i = 0; i < src.primitives.size(); ++i)
+    TextureInfo::operator=(src);
+
+    if (src.is_object())
     {
-        mPrimitives[i] = src.primitives[i];
+        copy(src, "strength", mStrength);
     }
 
-    mWeights = src.weights;
-    mName = src.name;
-
     return *this;
 }
 
-void Mesh::allocateGLResources(Asset& asset)
+void NormalTextureInfo::serialize(object& dst) const
 {
-    for (auto& primitive : mPrimitives)
+    TextureInfo::serialize(dst);
+    write(mScale, "scale", dst, 1.f);
+}
+
+const NormalTextureInfo& NormalTextureInfo::operator=(const Value& src)
+{
+    TextureInfo::operator=(src);
+    if (src.is_object())
     {
-        primitive.allocateGLResources(asset);
+        copy(src, "index", mIndex);
+        copy(src, "texCoord", mTexCoord);
+        copy(src, "scale", mScale);
     }
+
+    return *this;
 }
 
-const Scene& Scene::operator=(const tinygltf::Scene& src)
+const Material::PbrMetallicRoughness& Material::PbrMetallicRoughness::operator=(const Value& src)
 {
-    mNodes = src.nodes;
-    mName = src.name;
+    if (src.is_object())
+    {
+        copy(src, "baseColorFactor", mBaseColorFactor);
+        copy(src, "baseColorTexture", mBaseColorTexture);
+        copy(src, "metallicFactor", mMetallicFactor);
+        copy(src, "roughnessFactor", mRoughnessFactor);
+        copy(src, "metallicRoughnessTexture", mMetallicRoughnessTexture);
+    }
 
     return *this;
 }
 
-const Texture& Texture::operator=(const tinygltf::Texture& src)
+void Material::PbrMetallicRoughness::serialize(object& dst) const
 {
-    mSampler = src.sampler;
-    mSource = src.source;
-    mName = src.name;
+    write(mBaseColorFactor, "baseColorFactor", dst, vec4(1.f, 1.f, 1.f, 1.f));
+    write(mBaseColorTexture, "baseColorTexture", dst);
+    write(mMetallicFactor, "metallicFactor", dst, 1.f);
+    write(mRoughnessFactor, "roughnessFactor", dst, 1.f);
+    write(mMetallicRoughnessTexture, "metallicRoughnessTexture", dst);
+}
 
+bool Material::PbrMetallicRoughness::operator==(const Material::PbrMetallicRoughness& rhs) const
+{
+    return mBaseColorFactor == rhs.mBaseColorFactor &&
+        mBaseColorTexture == rhs.mBaseColorTexture &&
+        mMetallicFactor == rhs.mMetallicFactor &&
+        mRoughnessFactor == rhs.mRoughnessFactor &&
+        mMetallicRoughnessTexture == rhs.mMetallicRoughnessTexture;
+}
+
+bool Material::PbrMetallicRoughness::operator!=(const Material::PbrMetallicRoughness& rhs) const
+{
+    return !(*this == rhs);
+}
+
+const Material::Unlit& Material::Unlit::operator=(const Value& src)
+{
+    mPresent = true;
     return *this;
 }
 
-const Sampler& Sampler::operator=(const tinygltf::Sampler& src)
+void Material::Unlit::serialize(object& dst) const
 {
-    mMagFilter = src.magFilter;
-    mMinFilter = src.minFilter;
-    mWrapS = src.wrapS;
-    mWrapT = src.wrapT;
-    mName = src.name;
+    // no members and object has already been created, nothing to do
+}
+
+void TextureTransform::getPacked(vec4* packed) const
+{
+    packed[0] = vec4(mScale.x, mScale.y, mRotation, mOffset.x);
+    packed[1] = vec4(mOffset.y, 0.f, 0.f, 0.f);
+}
+
+const TextureTransform& TextureTransform::operator=(const Value& src)
+{
+    mPresent = true;
+    if (src.is_object())
+    {
+        copy(src, "offset", mOffset);
+        copy(src, "rotation", mRotation);
+        copy(src, "scale", mScale);
+        copy(src, "texCoord", mTexCoord);
+    }
 
     return *this;
 }
 
-void Skin::uploadMatrixPalette(Asset& asset, Node& node)
+void TextureTransform::serialize(object& dst) const
 {
-    // prepare matrix palette
+    write(mOffset, "offset", dst, vec2(0.f, 0.f));
+    write(mRotation, "rotation", dst, 0.f);
+    write(mScale, "scale", dst, vec2(1.f, 1.f));
+    write(mTexCoord, "texCoord", dst, -1);
+}
 
-    // modelview will be applied by the shader, so assume matrix palette is in asset space
-    std::vector<glh::matrix4f> t_mp;
 
-    t_mp.resize(mJoints.size());
+void Material::serialize(object& dst) const
+{
+    write(mName, "name", dst);
+    write(mEmissiveFactor, "emissiveFactor", dst, vec3(0.f, 0.f, 0.f));
+    write(mPbrMetallicRoughness, "pbrMetallicRoughness", dst);
+    write(mNormalTexture, "normalTexture", dst);
+    write(mOcclusionTexture, "occlusionTexture", dst);
+    write(mEmissiveTexture, "emissiveTexture", dst);
+    write(mAlphaMode, "alphaMode", dst, Material::AlphaMode::OPAQUE);
+    write(mAlphaCutoff, "alphaCutoff", dst, 0.5f);
+    write(mDoubleSided, "doubleSided", dst, false);
+    write_extensions(dst, &mUnlit, "KHR_materials_unlit");
+}
 
-    for (U32 i = 0; i < mJoints.size(); ++i)
+const Material& Material::operator=(const Value& src)
+{
+    if (src.is_object())
     {
-        Node& joint = asset.mNodes[mJoints[i]];
-        
-        //t_mp[i].set_value(joint.mRenderMatrix.getF32ptr());
-        //t_mp[i] = t_mp[i] * mInverseBindMatricesData[i];
+        copy(src, "name", mName);
+        copy(src, "emissiveFactor", mEmissiveFactor);
+        copy(src, "pbrMetallicRoughness", mPbrMetallicRoughness);
+        copy(src, "normalTexture", mNormalTexture);
+        copy(src, "occlusionTexture", mOcclusionTexture);
+        copy(src, "emissiveTexture", mEmissiveTexture);
+        copy(src, "alphaMode", mAlphaMode);
+        copy(src, "alphaCutoff", mAlphaCutoff);
+        copy(src, "doubleSided", mDoubleSided);
+        copy_extensions(src,
+            "KHR_materials_unlit", &mUnlit );
+    }
+    return *this;
+}
 
-        //t_mp[i].set_value(joint.mRenderMatrix.getF32ptr());
-        //t_mp[i] = mInverseBindMatricesData[i] * t_mp[i];
 
-        t_mp[i].set_value(joint.mRenderMatrix.getF32ptr());
-        t_mp[i] = t_mp[i] * mInverseBindMatricesData[i];
+void Mesh::serialize(object& dst) const
+{
+    write(mPrimitives, "primitives", dst);
+    write(mWeights, "weights", dst);
+    write(mName, "name", dst);
+}
 
+const Mesh& Mesh::operator=(const Value& src)
+{
+    if (src.is_object())
+    {
+        copy(src, "primitives", mPrimitives);
+        copy(src, "weights", mWeights);
+        copy(src, "name", mName);
     }
 
-    std::vector<F32> glmp;
+    return *this;
+}
 
-    glmp.resize(mJoints.size() * 12);
+bool Mesh::prep(Asset& asset)
+{
+    for (auto& primitive : mPrimitives)
+    {
+        if (!primitive.prep(asset))
+        {
+            return false;
+        }
+    }
 
-    F32* mp = glmp.data();
+    return true;
+}
 
-    for (U32 i = 0; i < mJoints.size(); ++i)
-    {
-        F32* m = (F32*)t_mp[i].m;
+void Scene::serialize(object& dst) const
+{
+    write(mNodes, "nodes", dst);
+    write(mName, "name", dst);
+}
 
-        U32 idx = i * 12;
+const Scene& Scene::operator=(const Value& src)
+{
+    copy(src, "nodes", mNodes);
+    copy(src, "name", mName);
 
-        mp[idx + 0] = m[0];
-        mp[idx + 1] = m[1];
-        mp[idx + 2] = m[2];
-        mp[idx + 3] = m[12];
+    return *this;
+}
 
-        mp[idx + 4] = m[4];
-        mp[idx + 5] = m[5];
-        mp[idx + 6] = m[6];
-        mp[idx + 7] = m[13];
+void Texture::serialize(object& dst) const
+{
+    write(mSampler, "sampler", dst, INVALID_INDEX);
+    write(mSource, "source", dst, INVALID_INDEX);
+    write(mName, "name", dst);
+}
 
-        mp[idx + 8] = m[8];
-        mp[idx + 9] = m[9];
-        mp[idx + 10] = m[10];
-        mp[idx + 11] = m[14];
+const Texture& Texture::operator=(const Value& src)
+{
+    if (src.is_object())
+    {
+        copy(src, "sampler", mSampler);
+        copy(src, "source", mSource);
+        copy(src, "name", mName);
     }
 
-    LLGLSLShader::sCurBoundShaderPtr->uniformMatrix3x4fv(LLViewerShaderMgr::AVATAR_MATRIX,
-        mJoints.size(),
-        FALSE,
-        (GLfloat*)glmp.data());
+    return *this;
+}
+
+void Sampler::serialize(object& dst) const
+{
+    write(mMagFilter, "magFilter", dst, LINEAR);
+    write(mMinFilter, "minFilter", dst, LINEAR_MIPMAP_LINEAR);
+    write(mWrapS, "wrapS", dst, REPEAT);
+    write(mWrapT, "wrapT", dst, REPEAT);
+    write(mName, "name", dst);
 }
 
+const Sampler& Sampler::operator=(const Value& src)
+{
+    copy(src, "magFilter", mMagFilter);
+    copy(src, "minFilter", mMinFilter);
+    copy(src, "wrapS", mWrapS);
+    copy(src, "wrapT", mWrapT);
+    copy(src, "name", mName);
+
+    return *this;
+}
+
+
diff --git a/indra/newview/gltf/asset.h b/indra/newview/gltf/asset.h
index 5ceac74a8a..27821659db 100644
--- a/indra/newview/gltf/asset.h
+++ b/indra/newview/gltf/asset.h
@@ -28,13 +28,21 @@
 
 #include "llvertexbuffer.h"
 #include "llvolumeoctree.h"
-#include "../lltinygltfhelper.h"
 #include "accessor.h"
 #include "primitive.h"
 #include "animation.h"
+#include "boost/json.hpp"
+#include "common.h"
+#include "../llviewertexture.h"
+#include "llglslshader.h"
 
 extern F32SecondsImplicit       gFrameTimeSeconds;
 
+// wingdi defines OPAQUE, which conflicts with our enum
+#if defined(OPAQUE)
+#undef OPAQUE
+#endif
+
 // LL GLTF Implementation
 namespace LL
 {
@@ -42,18 +50,118 @@ namespace LL
     {
         class Asset;
 
+        class Extension
+        {
+        public:
+            // true if this extension is present in the gltf file
+            // otherwise false
+            bool mPresent = false;
+        };
+
+        class TextureTransform : public Extension // KHR_texture_transform implementation
+        {
+        public:
+            vec2 mOffset = vec2(0.f, 0.f);
+            F32 mRotation = 0.f;
+            vec2 mScale = vec2(1.f, 1.f);
+            S32 mTexCoord = INVALID_INDEX;
+
+            // get the texture transform as a packed array of vec4's
+            // dst MUST point to at least 2 vec4's
+            void getPacked(vec4* dst) const;
+
+            const TextureTransform& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
+        };
+
+        class TextureInfo
+        {
+        public:
+            S32 mIndex = INVALID_INDEX;
+            S32 mTexCoord = 0;
+
+            TextureTransform mTextureTransform;
+
+            bool operator==(const TextureInfo& rhs) const;
+            bool operator!=(const TextureInfo& rhs) const;
+
+            // get the UV channel that should be used for sampling this texture
+            // returns mTextureTransform.mTexCoord if present and valid, otherwise mTexCoord
+            S32 getTexCoord() const;
+
+            const TextureInfo& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
+        };
+
+        class NormalTextureInfo : public TextureInfo
+        {
+        public:
+            F32 mScale = 1.0f;
+
+            const NormalTextureInfo& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
+        };
+
+        class OcclusionTextureInfo : public TextureInfo
+        {
+        public:
+            F32 mStrength = 1.0f;
+
+            const OcclusionTextureInfo& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
+        };
+
         class Material
         {
         public:
-            // use LLFetchedGLTFMaterial for now, but eventually we'll want to use
-            // a more flexible GLTF material implementation instead of the fixed packing
-            // version we use for sharable GLTF material assets
-            LLPointer<LLFetchedGLTFMaterial> mMaterial;
+
+            class Unlit : public Extension // KHR_materials_unlit implementation
+            {
+            public:
+                const Unlit& operator=(const Value& src);
+                void serialize(boost::json::object& dst) const;
+            };
+
+            enum class AlphaMode
+            {
+                OPAQUE,
+                MASK,
+                BLEND
+            };
+
+
+            class PbrMetallicRoughness
+            {
+            public:
+                vec4 mBaseColorFactor = vec4(1.f,1.f,1.f,1.f);
+                TextureInfo mBaseColorTexture;
+                F32 mMetallicFactor = 1.0f;
+                F32 mRoughnessFactor = 1.0f;
+                TextureInfo mMetallicRoughnessTexture;
+
+                bool operator==(const PbrMetallicRoughness& rhs) const;
+                bool operator!=(const PbrMetallicRoughness& rhs) const;
+                const PbrMetallicRoughness& operator=(const Value& src);
+                void serialize(boost::json::object& dst) const;
+            };
+
+
+            PbrMetallicRoughness mPbrMetallicRoughness;
+            NormalTextureInfo mNormalTexture;
+            OcclusionTextureInfo mOcclusionTexture;
+            TextureInfo mEmissiveTexture;
+
             std::string mName;
+            vec3 mEmissiveFactor = vec3(0.f, 0.f, 0.f);
+            AlphaMode mAlphaMode = AlphaMode::OPAQUE;
+            F32 mAlphaCutoff = 0.5f;
+            bool mDoubleSided = false;
+            Unlit mUnlit;
 
-            const Material& operator=(const tinygltf::Material& src);
+            bool isMultiUV() const;
 
-            void allocateGLResources(Asset& asset);
+            const Material& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
         };
 
         class Mesh
@@ -63,22 +171,22 @@ namespace LL
             std::vector<double> mWeights;
             std::string mName;
 
-            const Mesh& operator=(const tinygltf::Mesh& src);
+            const Mesh& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
 
-            void allocateGLResources(Asset& asset);
+            bool prep(Asset& asset);
         };
 
         class Node
         {
         public:
-            LLMatrix4a mMatrix; //local transform
-            LLMatrix4a mRenderMatrix; //transform for rendering
-            LLMatrix4a mAssetMatrix; //transform from local to asset space
-            LLMatrix4a mAssetMatrixInv; //transform from asset to local space
+            mat4 mMatrix = glm::identity<mat4>(); //local transform
+            mat4 mAssetMatrix; //transform from local to asset space
+            mat4 mAssetMatrixInv; //transform from asset to local space
 
-            glh::vec3f mTranslation;
-            glh::quaternionf mRotation;
-            glh::vec3f mScale;
+            vec3  mTranslation = vec3(0,0,0);
+            quat mRotation = glm::identity<quat>();
+            vec3 mScale = vec3(1.f,1.f,1.f);
 
             // if true, mMatrix is valid and up to date
             bool mMatrixValid = false;
@@ -96,14 +204,11 @@ namespace LL
 
             std::string mName;
 
-            const Node& operator=(const tinygltf::Node& src);
-
-            // Set mRenderMatrix to a transform that can be used for the current render pass
-            // modelview -- parent's render matrix
-            void updateRenderTransforms(Asset& asset, const LLMatrix4a& modelview);
+            const Node& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
 
             // update mAssetMatrix and mAssetMatrixInv
-            void updateTransforms(Asset& asset, const LLMatrix4a& parentMatrix);
+            void updateTransforms(Asset& asset, const mat4& parentMatrix);
 
             // ensure mMatrix is valid -- if mMatrixValid is false and mTRSValid is true, will update mMatrix to match Translation/Rotation/Scale
             void makeMatrixValid();
@@ -113,30 +218,35 @@ namespace LL
 
             // Set rotation of this node
             // SIDE EFFECT: invalidates mMatrix
-            void setRotation(const glh::quaternionf& rotation);
+            void setRotation(const quat& rotation);
 
             // Set translation of this node
             // SIDE EFFECT: invalidates mMatrix
-            void setTranslation(const glh::vec3f& translation);
+            void setTranslation(const vec3& translation);
 
             // Set scale of this node
             // SIDE EFFECT: invalidates mMatrix
-            void setScale(const glh::vec3f& scale);
+            void setScale(const vec3& scale);
         };
 
         class Skin
         {
         public:
+            ~Skin();
+
             S32 mInverseBindMatrices = INVALID_INDEX;
             S32 mSkeleton = INVALID_INDEX;
+
+            U32 mUBO = 0;
             std::vector<S32> mJoints;
             std::string mName;
-            std::vector<glh::matrix4f> mInverseBindMatricesData;
+            std::vector<mat4> mInverseBindMatricesData;
 
-            void allocateGLResources(Asset& asset);
-            void uploadMatrixPalette(Asset& asset, Node& node);
+            bool prep(Asset& asset);
+            void uploadMatrixPalette(Asset& asset);
 
-            const Skin& operator=(const tinygltf::Skin& src);
+            const Skin& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
         };
 
         class Scene
@@ -145,10 +255,11 @@ namespace LL
             std::vector<S32> mNodes;
             std::string mName;
 
-            const Scene& operator=(const tinygltf::Scene& src);
+            const Scene& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
 
             void updateTransforms(Asset& asset);
-            void updateRenderTransforms(Asset& asset, const LLMatrix4a& modelview);
+            void updateRenderTransforms(Asset& asset, const mat4& modelview);
         };
 
         class Texture
@@ -158,19 +269,21 @@ namespace LL
             S32 mSource = INVALID_INDEX;
             std::string mName;
 
-            const Texture& operator=(const tinygltf::Texture& src);
+            const Texture& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
         };
 
         class Sampler
         {
         public:
-            S32 mMagFilter;
-            S32 mMinFilter;
-            S32 mWrapS;
-            S32 mWrapT;
+            S32 mMagFilter = LINEAR;
+            S32 mMinFilter = LINEAR_MIPMAP_LINEAR;
+            S32 mWrapS = REPEAT;
+            S32 mWrapT = REPEAT;
             std::string mName;
 
-            const Sampler& operator=(const tinygltf::Sampler& src);
+            const Sampler& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
         };
 
         class Image
@@ -179,38 +292,64 @@ namespace LL
             std::string mName;
             std::string mUri;
             std::string mMimeType;
-            std::vector<U8> mData;
-            S32 mWidth;
-            S32 mHeight;
-            S32 mComponent;
-            S32 mBits;
+
+            S32 mBufferView = INVALID_INDEX;
+
+            S32 mWidth = -1;
+            S32 mHeight = -1;
+            S32 mComponent = -1;
+            S32 mBits = -1;
+            S32 mPixelType = -1;
+
             LLPointer<LLViewerFetchedTexture> mTexture;
 
-            const Image& operator=(const tinygltf::Image& src)
-            {
-                mName = src.name;
-                mUri = src.uri;
-                mMimeType = src.mimeType;
-                mData = src.image;
-                mWidth = src.width;
-                mHeight = src.height;
-                mComponent = src.component;
-                mBits = src.bits;
-
-                return *this;
-            }
-
-            void allocateGLResources()
+            const Image& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
+
+            // save image to disk
+            // may remove image data from bufferviews and convert to
+            // file uri if necessary
+            bool save(Asset& asset, const std::string& filename);
+
+            // erase the buffer view associated with this image
+            // free any associated GLTF resources
+            // preserve only uri and name
+            void clearData(Asset& asset);
+
+            bool prep(Asset& asset);
+        };
+
+        // Render Batch -- vertex buffer and list of primitives to render using
+        // said vertex buffer
+        class RenderBatch
+        {
+        public:
+            struct PrimitiveData
             {
-                // allocate texture
+                S32 mPrimitiveIndex = INVALID_INDEX;
+                S32 mNodeIndex = INVALID_INDEX;
+            };
+
+            LLPointer<LLVertexBuffer> mVertexBuffer;
+            std::vector<PrimitiveData> mPrimitives;
+        };
 
-            }
+        class RenderData
+        {
+        public:
+            // list of render batches
+            // indexed by [material index + 1](0 is reserved for default material)
+            // there should be exactly one render batch per material per variant
+            std::vector<RenderBatch> mBatches[LLGLSLShader::NUM_GLTF_VARIANTS];
         };
 
+
         // C++ representation of a GLTF Asset
-        class Asset : public LLRefCount
+        class Asset
         {
         public:
+
+            static const std::string minVersion_default;
             std::vector<Scene> mScenes;
             std::vector<Node> mNodes;
             std::vector<Mesh> mMeshes;
@@ -223,12 +362,38 @@ namespace LL
             std::vector<Accessor> mAccessors;
             std::vector<Animation> mAnimations;
             std::vector<Skin> mSkins;
+            std::vector<std::string> mExtensionsUsed;
+            std::vector<std::string> mExtensionsRequired;
+
+            std::string mVersion;
+            std::string mGenerator;
+            std::string mMinVersion;
+            std::string mCopyright;
+
+            S32 mScene = INVALID_INDEX;
+            Value mExtras;
+
+            U32 mPendingBuffers = 0;
+
+            // local file this asset was loaded from (if any)
+            std::string mFilename;
 
             // the last time update() was called according to gFrameTimeSeconds
             F32 mLastUpdateTime = gFrameTimeSeconds;
 
-            // prepare the asset for rendering
-            void allocateGLResources(const std::string& filename, const tinygltf::Model& model);
+            // data used for rendering
+            // 0 - single sided
+            // 1 - double sided
+            RenderData mRenderData[2];
+
+            // UBO for storing node transforms
+            U32 mNodesUBO = 0;
+
+            // UBO for storing material data
+            U32 mMaterialsUBO = 0;
+
+            // prepare for first time use
+            bool prep();
 
             // Called periodically (typically once per frame)
             // Any ongoing work (such as animations) should be handled here
@@ -240,12 +405,11 @@ namespace LL
             // update asset-to-node and node-to-asset transforms
             void updateTransforms();
 
-            // update node render transforms
-            void updateRenderTransforms(const LLMatrix4a& modelview);
+            // upload matrices to UBO
+            void uploadTransforms();
 
-            void render(bool opaque, bool rigged = false);
-            void renderOpaque();
-            void renderTransparent();
+            // upload materils to UBO
+            void uploadMaterials();
 
             // return the index of the node that the line segment intersects with, or -1 if no hit
             // input and output values must be in this asset's local coordinate frame
@@ -257,8 +421,37 @@ namespace LL
                 S32* primitive_hitp = nullptr           // return the index of the primitive that was hit
             );
 
-            const Asset& operator=(const tinygltf::Model& src);
+            Asset() = default;
+            Asset(const Value& src);
+
+            // load from given file
+            // accepts .gltf and .glb files
+            // Any existing data will be lost
+            // returns result of prep() on success
+            bool load(std::string_view filename);
+
+            // load .glb contents from memory
+            // data - binary contents of .glb file
+            // returns result of prep() on success
+            bool loadBinary(const std::string& data);
 
+            const Asset& operator=(const Value& src);
+            void serialize(boost::json::object& dst) const;
+
+            // save the asset to the given .gltf file
+            // saves images and bins alongside the gltf file
+            bool save(const std::string& filename);
+
+            // remove the bufferview at the given index
+            // updates all bufferview indices in this Asset as needed
+            void eraseBufferView(S32 bufferView);
+
+            // return true if this Asset has been loaded as a local preview
+            // Local previews may be uploaded or exported to disk
+            bool isLocalPreview() { return !mFilename.empty(); }
         };
+
+        Material::AlphaMode gltf_alpha_mode_to_enum(const std::string& alpha_mode);
+        std::string enum_to_gltf_alpha_mode(Material::AlphaMode alpha_mode);
     }
 }
diff --git a/indra/newview/gltf/buffer_util.h b/indra/newview/gltf/buffer_util.h
index 4e6f5901e7..40f9448aaf 100644
--- a/indra/newview/gltf/buffer_util.h
+++ b/indra/newview/gltf/buffer_util.h
@@ -31,60 +31,65 @@
 // whenever we add support for more types
 
 #ifdef _MSC_VER
-#define LL_FUNCSIG __FUNCSIG__ 
+#define LL_FUNCSIG __FUNCSIG__
 #else
 #define LL_FUNCSIG __PRETTY_FUNCTION__
 #endif
 
+#include "accessor.h"
+
 namespace LL
 {
     namespace GLTF
     {
+
+        using string_view = boost::json::string_view;
+
         // copy one Scalar from src to dst
         template<class S, class T>
-        static void copyScalar(S* src, T& dst)
+        inline void copyScalar(S* src, T& dst)
         {
             LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL;
         }
 
         // copy one vec2 from src to dst
         template<class S, class T>
-        static void copyVec2(S* src, T& dst)
+        inline void copyVec2(S* src, T& dst)
         {
             LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL;
         }
 
         // copy one vec3 from src to dst
         template<class S, class T>
-        static void copyVec3(S* src, T& dst)
+        inline void copyVec3(S* src, T& dst)
         {
             LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL;
         }
 
         // copy one vec4 from src to dst
         template<class S, class T>
-        static void copyVec4(S* src, T& dst)
+        inline void copyVec4(S* src, T& dst)
         {
             LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL;
         }
 
-        // copy one vec2 from src to dst
+        // copy one mat2 from src to dst
         template<class S, class T>
-        static void copyMat2(S* src, T& dst)
+        inline void copyMat2(S* src, T& dst)
         {
             LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL;
         }
 
-        // copy one vec3 from src to dst
+        // copy one mat3 from src to dst
         template<class S, class T>
-        static void copyMat3(S* src, T& dst)
+        inline void copyMat3(S* src, T& dst)
         {
             LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL;
         }
 
-        // copy one vec4 from src to dst
+        // copy one mat4 from src to dst
         template<class S, class T>
-        static void copyMat4(S* src, T& dst)
+        inline void copyMat4(S* src, T& dst)
         {
             LL_ERRS() << "TODO: implement " << LL_FUNCSIG << LL_ENDL;
         }
@@ -93,135 +98,138 @@ namespace LL
         // concrete implementations for different types of source and destination
         //=========================================================================================================
 
-// suppress unused function warning -- clang complains here but these specializations are definitely used
-#if defined(__clang__)
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wunused-function"
-#endif
-
         template<>
-        void copyScalar<F32, F32>(F32* src, F32& dst)
+        inline void copyScalar<F32, F32>(F32* src, F32& dst)
         {
             dst = *src;
         }
 
         template<>
-        void copyScalar<U32, U32>(U32* src, U32& dst)
+        inline void copyScalar<U32, U32>(U32* src, U32& dst)
         {
             dst = *src;
         }
 
         template<>
-        void copyScalar<U32, U16>(U32* src, U16& dst)
+        inline void copyScalar<U32, U16>(U32* src, U16& dst)
         {
             dst = *src;
         }
 
         template<>
-        void copyScalar<U16, U16>(U16* src, U16& dst)
+        inline void copyScalar<U16, U16>(U16* src, U16& dst)
         {
             dst = *src;
         }
 
         template<>
-        void copyScalar<U16, U32>(U16* src, U32& dst)
+        inline void copyScalar<U16, U32>(U16* src, U32& dst)
         {
             dst = *src;
         }
 
         template<>
-        void copyScalar<U8, U16>(U8* src, U16& dst)
+        inline void copyScalar<U8, U16>(U8* src, U16& dst)
         {
             dst = *src;
         }
 
         template<>
-        void copyScalar<U8, U32>(U8* src, U32& dst)
+        inline void copyScalar<U8, U32>(U8* src, U32& dst)
         {
             dst = *src;
         }
 
         template<>
-        void copyVec2<F32, LLVector2>(F32* src, LLVector2& dst)
+        inline void copyVec2<F32, LLVector2>(F32* src, LLVector2& dst)
         {
             dst.set(src[0], src[1]);
         }
 
         template<>
-        void copyVec3<F32, glh::vec3f>(F32* src, glh::vec3f& dst)
+        inline void copyVec3<F32, vec3>(F32* src, vec3& dst)
         {
-            dst.set_value(src[0], src[1], src[2]);
+            dst = vec3(src[0], src[1], src[2]);
         }
 
         template<>
-        void copyVec3<F32, LLVector4a>(F32* src, LLVector4a& dst)
+        inline void copyVec3<F32, LLVector4a>(F32* src, LLVector4a& dst)
         {
             dst.load3(src);
         }
 
         template<>
-        void copyVec3<U16, LLColor4U>(U16* src, LLColor4U& dst)
+        inline void copyVec3<U16, LLColor4U>(U16* src, LLColor4U& dst)
         {
             dst.set(src[0], src[1], src[2], 255);
         }
 
         template<>
-        void copyVec4<U8, LLColor4U>(U8* src, LLColor4U& dst)
+        inline void copyVec4<U8, LLColor4U>(U8* src, LLColor4U& dst)
         {
             dst.set(src[0], src[1], src[2], src[3]);
         }
 
         template<>
-        void copyVec4<U16, LLColor4U>(U16* src, LLColor4U& dst)
+        inline void copyVec4<U16, U64>(U16* src, U64& dst)
+        {
+            U16* data = (U16*)&dst;
+            data[0] = src[0];
+            data[1] = src[1];
+            data[2] = src[2];
+            data[3] = src[3];
+        }
+
+        template<>
+        inline void copyVec4<U16, LLColor4U>(U16* src, LLColor4U& dst)
         {
             dst.set(src[0], src[1], src[2], src[3]);
         }
 
         template<>
-        void copyVec4<F32, LLColor4U>(F32* src, LLColor4U& dst)
+        inline void copyVec4<F32, LLColor4U>(F32* src, LLColor4U& dst)
         {
             dst.set(src[0]*255, src[1]*255, src[2]*255, src[3]*255);
         }
 
         template<>
-        void copyVec4<F32, LLVector4a>(F32* src, LLVector4a& dst)
+        inline void copyVec4<F32, LLVector4a>(F32* src, LLVector4a& dst)
         {
             dst.loadua(src);
         }
 
         template<>
-        void copyVec4<U16, LLVector4a>(U16* src, LLVector4a& dst)
+        inline void copyVec4<U16, LLVector4a>(U16* src, LLVector4a& dst)
         {
             dst.set(src[0], src[1], src[2], src[3]);
         }
 
         template<>
-        void copyVec4<U8, LLVector4a>(U8* src, LLVector4a& dst)
+        inline void copyVec4<U8, LLVector4a>(U8* src, LLVector4a& dst)
         {
             dst.set(src[0], src[1], src[2], src[3]);
         }
 
         template<>
-        void copyVec4<F32, glh::quaternionf>(F32* src, glh::quaternionf& dst)
+        inline void copyVec4<F32, quat>(F32* src, quat& dst)
         {
-            dst.set_value(src);
+            dst.x = src[0];
+            dst.y = src[1];
+            dst.z = src[2];
+            dst.w = src[3];
         }
 
         template<>
-        void copyMat4<F32, glh::matrix4f>(F32* src, glh::matrix4f& dst)
+        inline void copyMat4<F32, mat4>(F32* src, mat4& dst)
         {
-            dst.set_value(src);
+            dst = glm::make_mat4(src);
         }
 
-#if defined(__clang__)
-#pragma clang diagnostic pop
-#endif
-
         //=========================================================================================================
 
         // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy
         template<class S, class T>
-        static void copyScalar(S* src, LLStrider<T> dst, S32 stride, S32 count)
+        inline void copyScalar(S* src, LLStrider<T> dst, S32 stride, S32 count)
         {
             for (S32 i = 0; i < count; ++i)
             {
@@ -233,7 +241,7 @@ namespace LL
 
         // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy
         template<class S, class T>
-        static void copyVec2(S* src, LLStrider<T> dst, S32 stride, S32 count)
+        inline void copyVec2(S* src, LLStrider<T> dst, S32 stride, S32 count)
         {
             for (S32 i = 0; i < count; ++i)
             {
@@ -245,7 +253,7 @@ namespace LL
 
         // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy
         template<class S, class T>
-        static void copyVec3(S* src, LLStrider<T> dst, S32 stride, S32 count)
+        inline void copyVec3(S* src, LLStrider<T> dst, S32 stride, S32 count)
         {
             for (S32 i = 0; i < count; ++i)
             {
@@ -257,7 +265,7 @@ namespace LL
 
         // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy
         template<class S, class T>
-        static void copyVec4(S* src, LLStrider<T> dst, S32 stride, S32 count)
+        inline void copyVec4(S* src, LLStrider<T> dst, S32 stride, S32 count)
         {
             for (S32 i = 0; i < count; ++i)
             {
@@ -269,7 +277,7 @@ namespace LL
 
         // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy
         template<class S, class T>
-        static void copyMat2(S* src, LLStrider<T> dst, S32 stride, S32 count)
+        inline void copyMat2(S* src, LLStrider<T> dst, S32 stride, S32 count)
         {
             for (S32 i = 0; i < count; ++i)
             {
@@ -281,7 +289,7 @@ namespace LL
 
         // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy
         template<class S, class T>
-        static void copyMat3(S* src, LLStrider<T> dst, S32 stride, S32 count)
+        inline void copyMat3(S* src, LLStrider<T> dst, S32 stride, S32 count)
         {
             for (S32 i = 0; i < count; ++i)
             {
@@ -293,7 +301,7 @@ namespace LL
 
         // copy from src to dst, stride is the number of bytes between each element in src, count is number of elements to copy
         template<class S, class T>
-        static void copyMat4(S* src, LLStrider<T> dst, S32 stride, S32 count)
+        inline void copyMat4(S* src, LLStrider<T> dst, S32 stride, S32 count)
         {
             for (S32 i = 0; i < count; ++i)
             {
@@ -304,39 +312,39 @@ namespace LL
         }
 
         template<class S, class T>
-        static void copy(Asset& asset, Accessor& accessor, const S* src, LLStrider<T>& dst, S32 byteStride)
+        inline void copy(Asset& asset, Accessor& accessor, const S* src, LLStrider<T>& dst, S32 byteStride)
         {
-            if (accessor.mType == (S32)Accessor::Type::SCALAR)
+            if (accessor.mType == Accessor::Type::SCALAR)
             {
                 S32 stride = byteStride == 0 ? sizeof(S) * 1 : byteStride;
                 copyScalar((S*)src, dst, stride, accessor.mCount);
             }
-            else if (accessor.mType == (S32)Accessor::Type::VEC2)
+            else if (accessor.mType == Accessor::Type::VEC2)
             {
                 S32 stride = byteStride == 0 ? sizeof(S) * 2 : byteStride;
                 copyVec2((S*)src, dst, stride, accessor.mCount);
             }
-            else if (accessor.mType == (S32)Accessor::Type::VEC3)
+            else if (accessor.mType == Accessor::Type::VEC3)
             {
                 S32 stride = byteStride == 0 ? sizeof(S) * 3 : byteStride;
                 copyVec3((S*)src, dst, stride, accessor.mCount);
             }
-            else if (accessor.mType == (S32)Accessor::Type::VEC4)
+            else if (accessor.mType == Accessor::Type::VEC4)
             {
                 S32 stride = byteStride == 0 ? sizeof(S) * 4 : byteStride;
                 copyVec4((S*)src, dst, stride, accessor.mCount);
             }
-            else if (accessor.mType == (S32)Accessor::Type::MAT2)
+            else if (accessor.mType == Accessor::Type::MAT2)
             {
                 S32 stride = byteStride == 0 ? sizeof(S) * 4 : byteStride;
                 copyMat2((S*)src, dst, stride, accessor.mCount);
             }
-            else if (accessor.mType == (S32)Accessor::Type::MAT3)
+            else if (accessor.mType == Accessor::Type::MAT3)
             {
                 S32 stride = byteStride == 0 ? sizeof(S) * 9 : byteStride;
                 copyMat3((S*)src, dst, stride, accessor.mCount);
             }
-            else if (accessor.mType == (S32)Accessor::Type::MAT4)
+            else if (accessor.mType == Accessor::Type::MAT4)
             {
                 S32 stride = byteStride == 0 ? sizeof(S) * 16 : byteStride;
                 copyMat4((S*)src, dst, stride, accessor.mCount);
@@ -349,54 +357,701 @@ namespace LL
 
         // copy data from accessor to strider
         template<class T>
-        static void copy(Asset& asset, Accessor& accessor, LLStrider<T>& dst)
+        inline void copy(Asset& asset, Accessor& accessor, LLStrider<T>& dst)
         {
             const BufferView& bufferView = asset.mBufferViews[accessor.mBufferView];
             const Buffer& buffer = asset.mBuffers[bufferView.mBuffer];
             const U8* src = buffer.mData.data() + bufferView.mByteOffset + accessor.mByteOffset;
 
-            if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_FLOAT)
+            switch (accessor.mComponentType)
             {
-                LL::GLTF::copy(asset, accessor, (const F32*)src, dst, bufferView.mByteStride);
+            case Accessor::ComponentType::FLOAT:
+                copy(asset, accessor, (const F32*)src, dst, bufferView.mByteStride);
+                break;
+            case Accessor::ComponentType::UNSIGNED_INT:
+                copy(asset, accessor, (const U32*)src, dst, bufferView.mByteStride);
+                break;
+            case Accessor::ComponentType::SHORT:
+                copy(asset, accessor, (const S16*)src, dst, bufferView.mByteStride);
+                break;
+            case Accessor::ComponentType::UNSIGNED_SHORT:
+                copy(asset, accessor, (const U16*)src, dst, bufferView.mByteStride);
+                break;
+            case Accessor::ComponentType::BYTE:
+                copy(asset, accessor, (const S8*)src, dst, bufferView.mByteStride);
+                break;
+            case Accessor::ComponentType::UNSIGNED_BYTE:
+                copy(asset, accessor, (const U8*)src, dst, bufferView.mByteStride);
+                break;
+            default:
+                LL_ERRS("GLTF") << "Invalid component type" << LL_ENDL;
+                break;
             }
-            else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_UNSIGNED_SHORT)
+        }
+
+        // copy data from accessor to vector
+        template<class T>
+        inline void copy(Asset& asset, Accessor& accessor, std::vector<T>& dst)
+        {
+            dst.resize(accessor.mCount);
+            LLStrider<T> strider = dst.data();
+            copy(asset, accessor, strider);
+        }
+
+
+        //=========================================================================================================
+        // boost::json copying utilities
+        // ========================================================================================================
+
+        //====================== unspecialized base template, single value ===========================
+
+        // to/from Value
+        template<typename T>
+        inline bool copy(const Value& src, T& dst)
+        {
+            dst = src;
+            return true;
+        }
+
+        template<typename T>
+        inline bool write(const T& src, Value& dst)
+        {
+            dst = boost::json::object();
+            src.serialize(dst.as_object());
+            return true;
+        }
+
+        template<typename T>
+        inline bool copy(const Value& src, std::unordered_map<std::string, T>& dst)
+        {
+            if (src.is_object())
             {
-                LL::GLTF::copy(asset, accessor, (const U16*)src, dst, bufferView.mByteStride);
+                const boost::json::object& obj = src.as_object();
+                for (const auto& [key, value] : obj)
+                {
+                    copy<T>(value, dst[key]);
+                }
+                return true;
             }
-            else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_UNSIGNED_INT)
+            return false;
+        }
+
+        template<typename T>
+        inline bool write(const std::unordered_map<std::string, T>& src, Value& dst)
+        {
+            boost::json::object obj;
+            for (const auto& [key, value] : src)
             {
-                LL::GLTF::copy(asset, accessor, (const U32*)src, dst, bufferView.mByteStride);
+                Value v;
+                if (write<T>(value, v))
+                {
+                    obj[key] = v;
+                }
+                else
+                {
+                    return false;
+                }
             }
-            else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_UNSIGNED_BYTE)
+            dst = obj;
+            return true;
+        }
+
+        // to/from array
+        template<typename T>
+        inline bool copy(const Value& src, std::vector<T>& dst)
+        {
+            if (src.is_array())
             {
-                LL::GLTF::copy(asset, accessor, (const U8*)src, dst, bufferView.mByteStride);
+                const boost::json::array& arr = src.get_array();
+                dst.resize(arr.size());
+                for (size_t i = 0; i < arr.size(); ++i)
+                {
+                    copy(arr[i], dst[i]);
+                }
+                return true;
             }
-            else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_SHORT)
+
+            return false;
+        }
+
+        template<typename T>
+        inline bool write(const std::vector<T>& src, Value& dst)
+        {
+            boost::json::array arr;
+            for (const T& t : src)
             {
-                LL::GLTF::copy(asset, accessor, (const S16*)src, dst, bufferView.mByteStride);
+                Value v;
+                if (write(t, v))
+                {
+                    arr.push_back(v);
+                }
+                else
+                {
+                    return false;
+                }
             }
-            else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_BYTE)
+            dst = arr;
+            return true;
+        }
+
+        // to/from object member
+        template<typename T>
+        inline bool copy(const boost::json::object& src, string_view member, T& dst)
+        {
+            auto it = src.find(member);
+            if (it != src.end())
             {
-                LL::GLTF::copy(asset, accessor, (const S8*)src, dst, bufferView.mByteStride);
+                return copy(it->value(), dst);
             }
-            else if (accessor.mComponentType == TINYGLTF_COMPONENT_TYPE_DOUBLE)
+            return false;
+        }
+
+        // always write a member to an object without checking default
+        template<typename T>
+        inline bool write_always(const T& src, string_view member, boost::json::object& dst)
+        {
+            Value& v = dst[member];
+            if (!write(src, v))
             {
-                LL::GLTF::copy(asset, accessor, (const F64*)src, dst, bufferView.mByteStride);
+                dst.erase(member);
+                return false;
             }
-            else
+            return true;
+        }
+
+
+        // to/from extension
+
+        // for internal use only, use copy_extensions instead
+        template<typename T>
+        inline bool _copy_extension(const boost::json::object& extensions, std::string_view member, T* dst)
+        {
+            if (extensions.contains(member))
             {
-                LL_ERRS("GLTF") << "Unsupported component type" << LL_ENDL;
+                return copy(extensions.at(member), *dst);
             }
+
+            return false;
         }
 
-        // copy data from accessor to vector
-        template<class T>
-        static void copy(Asset& asset, Accessor& accessor, std::vector<T>& dst)
+        // Copy all extensions from src.extensions to provided destinations
+        // Usage:
+        //  copy_extensions(src,
+        //                  "KHR_materials_unlit", &mUnlit,
+        //                  "KHR_materials_pbrSpecularGlossiness", &mPbrSpecularGlossiness);
+        // returns true if any of the extensions are copied
+        template<class... Types>
+        inline bool copy_extensions(const boost::json::value& src, Types... args)
         {
-            dst.resize(accessor.mCount);
-            LLStrider<T> strider = dst.data();
-            copy(asset, accessor, strider);
+            // extract the extensions object (don't assume it exists and verify that it is an object)
+            if (src.is_object())
+            {
+                boost::json::object obj = src.get_object();
+                if (obj.contains("extensions"))
+                {
+                    const boost::json::value& extensions = obj.at("extensions");
+                    if (extensions.is_object())
+                    {
+                        const boost::json::object& ext_obj = extensions.as_object();
+                        bool success = false;
+                        // copy each extension, return true if any of them succeed, do not short circuit on success
+                        U32 count = sizeof...(args);
+                        for (U32 i = 0; i < count; i += 2)
+                        {
+                            if (_copy_extension(ext_obj, args...))
+                            {
+                                success = true;
+                            }
+                        }
+                        return success;
+                    }
+                }
+            }
+
+            return false;
         }
+
+        // internal use aonly, use write_extensions instead
+        template<typename T>
+        inline bool _write_extension(boost::json::object& extensions, const T* src, string_view member)
+        {
+            if (src->mPresent)
+            {
+                Value v;
+                if (write(*src, v))
+                {
+                    extensions[member] = v;
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        // Write all extensions to dst.extensions
+        // Usage:
+        //  write_extensions(dst,
+        //                   mUnlit, "KHR_materials_unlit",
+        //                   mPbrSpecularGlossiness, "KHR_materials_pbrSpecularGlossiness");
+        // returns true if any of the extensions are written
+        template<class... Types>
+        inline bool write_extensions(boost::json::object& dst, Types... args)
+        {
+            bool success = false;
+
+            boost::json::object extensions;
+            U32 count = sizeof...(args) - 1;
+
+            for (U32 i = 0; i < count; i += 2)
+            {
+                if (_write_extension(extensions, args...))
+                {
+                    success = true;
+                }
+            }
+
+            if (success)
+            {
+                dst["extensions"] = extensions;
+            }
+
+            return success;
+        }
+
+        // conditionally write a member to an object if the member
+        // is not the default value
+        template<typename T>
+        inline bool write(const T& src, string_view member, boost::json::object& dst, const T& default_value = T())
+        {
+            if (src != default_value)
+            {
+                return write_always(src, member, dst);
+            }
+            return false;
+        }
+
+        template<typename T>
+        inline bool write(const std::unordered_map<std::string, T>& src, string_view member, boost::json::object& dst, const std::unordered_map<std::string, T>& default_value = std::unordered_map<std::string, T>())
+        {
+            if (!src.empty())
+            {
+                Value v;
+                if (write<T>(src, v))
+                {
+                    dst[member] = v;
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        template<typename T>
+        inline bool write(const std::vector<T>& src, string_view member, boost::json::object& dst, const std::vector<T>& deafault_value = std::vector<T>())
+        {
+            if (!src.empty())
+            {
+                Value v;
+                if (write(src, v))
+                {
+                    dst[member] = v;
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        template<typename T>
+        inline bool copy(const Value& src, string_view member, T& dst)
+        {
+            if (src.is_object())
+            {
+                const boost::json::object& obj = src.as_object();
+                return copy(obj, member, dst);
+            }
+
+            return false;
+        }
+
+        // Accessor::ComponentType
+        template<>
+        inline bool copy(const Value& src, Accessor::ComponentType& dst)
+        {
+            if (src.is_int64())
+            {
+                dst = (Accessor::ComponentType)src.get_int64();
+                return true;
+            }
+            return false;
+        }
+
+        template<>
+        inline bool write(const Accessor::ComponentType& src, Value& dst)
+        {
+            dst = (S32)src;
+            return true;
+        }
+
+        //Primitive::Mode
+        template<>
+        inline bool copy(const Value& src, Primitive::Mode& dst)
+        {
+            if (src.is_int64())
+            {
+                dst = (Primitive::Mode)src.get_int64();
+                return true;
+            }
+            return false;
+        }
+
+        template<>
+        inline bool write(const Primitive::Mode& src, Value& dst)
+        {
+            dst = (S32)src;
+            return true;
+        }
+
+        // vec4
+        template<>
+        inline bool copy(const Value& src, vec4& dst)
+        {
+            if (src.is_array())
+            {
+                const boost::json::array& arr = src.as_array();
+                if (arr.size() == 4)
+                {
+                    vec4 v;
+                    std::error_code ec;
+
+                    v.x = arr[0].to_number<F32>(ec); if (ec) return false;
+                    v.y = arr[1].to_number<F32>(ec); if (ec) return false;
+                    v.z = arr[2].to_number<F32>(ec); if (ec) return false;
+                    v.w = arr[3].to_number<F32>(ec); if (ec) return false;
+
+                    dst = v;
+
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        template<>
+        inline bool write(const vec4& src, Value& dst)
+        {
+            dst = boost::json::array();
+            boost::json::array& arr = dst.get_array();
+            arr.resize(4);
+            arr[0] = src.x;
+            arr[1] = src.y;
+            arr[2] = src.z;
+            arr[3] = src.w;
+            return true;
+        }
+
+        // quat
+        template<>
+        inline bool copy(const Value& src, quat& dst)
+        {
+            if (src.is_array())
+            {
+                const boost::json::array& arr = src.as_array();
+                if (arr.size() == 4)
+                {
+                    std::error_code ec;
+                    dst.x = arr[0].to_number<F32>(ec); if (ec) return false;
+                    dst.y = arr[1].to_number<F32>(ec); if (ec) return false;
+                    dst.z = arr[2].to_number<F32>(ec); if (ec) return false;
+                    dst.w = arr[3].to_number<F32>(ec); if (ec) return false;
+
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        template<>
+        inline bool write(const quat& src, Value& dst)
+        {
+            dst = boost::json::array();
+            boost::json::array& arr = dst.get_array();
+            arr.resize(4);
+            arr[0] = src.x;
+            arr[1] = src.y;
+            arr[2] = src.z;
+            arr[3] = src.w;
+            return true;
+        }
+
+
+        // vec3
+        template<>
+        inline bool copy(const Value& src, vec3& dst)
+        {
+            if (src.is_array())
+            {
+                const boost::json::array& arr = src.as_array();
+                if (arr.size() == 3)
+                {
+                    std::error_code ec;
+                    vec3 t;
+                    t.x = arr[0].to_number<F32>(ec); if (ec) return false;
+                    t.y = arr[1].to_number<F32>(ec); if (ec) return false;
+                    t.z = arr[2].to_number<F32>(ec); if (ec) return false;
+
+                    dst = t;
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        template<>
+        inline bool write(const vec3& src, Value& dst)
+        {
+            dst = boost::json::array();
+            boost::json::array& arr = dst.as_array();
+            arr.resize(3);
+            arr[0] = src.x;
+            arr[1] = src.y;
+            arr[2] = src.z;
+            return true;
+        }
+
+        // vec2
+        template<>
+        inline bool copy(const Value& src, vec2& dst)
+        {
+            if (src.is_array())
+            {
+                const boost::json::array& arr = src.as_array();
+                if (arr.size() == 2)
+                {
+                    std::error_code ec;
+                    vec2 t;
+                    t.x = arr[0].to_number<F32>(ec); if (ec) return false;
+                    t.y = arr[1].to_number<F32>(ec); if (ec) return false;
+
+                    dst = t;
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        template<>
+        inline bool write(const vec2& src, Value& dst)
+        {
+            dst = boost::json::array();
+            boost::json::array& arr = dst.as_array();
+            arr.resize(2);
+            arr[0] = src.x;
+            arr[1] = src.y;
+
+            return true;
+        }
+
+        // bool
+        template<>
+        inline bool copy(const Value& src, bool& dst)
+        {
+            if (src.is_bool())
+            {
+                dst = src.get_bool();
+                return true;
+            }
+            return false;
+        }
+
+        template<>
+        inline bool write(const bool& src, Value& dst)
+        {
+            dst = src;
+            return true;
+        }
+
+        // F32
+        template<>
+        inline bool copy(const Value& src, F32& dst)
+        {
+            std::error_code ec;
+            F32 t = src.to_number<F32>(ec); if (ec) return false;
+            dst = t;
+            return true;
+        }
+
+        template<>
+        inline bool write(const F32& src, Value& dst)
+        {
+            dst = src;
+            return true;
+        }
+
+
+        // U32
+        template<>
+        inline bool copy(const Value& src, U32& dst)
+        {
+            if (src.is_int64())
+            {
+                dst = src.get_int64();
+                return true;
+            }
+            return false;
+        }
+
+        template<>
+        inline bool write(const U32& src, Value& dst)
+        {
+            dst = src;
+            return true;
+        }
+
+        // F64
+        template<>
+        inline bool copy(const Value& src, F64& dst)
+        {
+            std::error_code ec;
+            F64 t = src.to_number<F64>(ec); if (ec) return false;
+            dst = t;
+            return true;
+        }
+
+        template<>
+        inline bool write(const F64& src, Value& dst)
+        {
+            dst = src;
+            return true;
+        }
+
+        // Accessor::Type
+        template<>
+        inline bool copy(const Value& src, Accessor::Type& dst)
+        {
+            if (src.is_string())
+            {
+                dst = gltf_type_to_enum(src.get_string().c_str());
+                return true;
+            }
+            return false;
+        }
+
+        template<>
+        inline bool write(const Accessor::Type& src, Value& dst)
+        {
+            dst = enum_to_gltf_type(src);
+            return true;
+        }
+
+        // S32
+        template<>
+        inline bool copy(const Value& src, S32& dst)
+        {
+            if (src.is_int64())
+            {
+                dst = src.get_int64();
+                return true;
+            }
+            return false;
+        }
+
+        template<>
+        inline bool write(const S32& src, Value& dst)
+        {
+            dst = src;
+            return true;
+        }
+
+
+        // std::string
+        template<>
+        inline bool copy(const Value& src, std::string& dst)
+        {
+            if (src.is_string())
+            {
+                dst = src.get_string().c_str();
+                return true;
+            }
+            return false;
+        }
+
+        template<>
+        inline bool write(const std::string& src, Value& dst)
+        {
+            dst = src;
+            return true;
+        }
+
+        // mat4
+        template<>
+        inline bool copy(const Value& src, mat4& dst)
+        {
+            if (src.is_array())
+            {
+                const boost::json::array& arr = src.get_array();
+                if (arr.size() == 16)
+                {
+                    // populate a temporary local in case
+                    // we hit an error in the middle of the array
+                    // (don't partially write a matrix)
+                    mat4 t;
+                    F32* p = glm::value_ptr(t);
+
+                    for (U32 i = 0; i < arr.size(); ++i)
+                    {
+                        std::error_code ec;
+                        p[i] = arr[i].to_number<F32>(ec);
+                        if (ec)
+                        {
+                            return false;
+                        }
+                    }
+
+                    dst = t;
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        template<>
+        inline bool write(const mat4& src, Value& dst)
+        {
+            dst = boost::json::array();
+            boost::json::array& arr = dst.get_array();
+            arr.resize(16);
+            const F32* p = glm::value_ptr(src);
+            for (U32 i = 0; i < 16; ++i)
+            {
+                arr[i] = p[i];
+            }
+            return true;
+        }
+
+        // Material::AlphaMode
+        template<>
+        inline bool copy(const Value& src, Material::AlphaMode& dst)
+        {
+            if (src.is_string())
+            {
+                dst = gltf_alpha_mode_to_enum(src.get_string().c_str());
+                return true;
+            }
+            return true;
+        }
+
+        template<>
+        inline bool write(const Material::AlphaMode& src, Value& dst)
+        {
+            dst = enum_to_gltf_alpha_mode(src);
+            return true;
+        }
+
+        //
+        // ========================================================================================================
+
     }
 }
 
+
+
+
diff --git a/indra/newview/gltf/common.h b/indra/newview/gltf/common.h
new file mode 100644
index 0000000000..b9698d4017
--- /dev/null
+++ b/indra/newview/gltf/common.h
@@ -0,0 +1,97 @@
+#pragma once
+
+/**
+ * @file common.h
+ * @brief LL GLTF Implementation
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#define GLM_ENABLE_EXPERIMENTAL 1
+
+#include "glm/vec2.hpp"
+#include "glm/vec3.hpp"
+#include "glm/vec4.hpp"
+#include "glm/mat4x4.hpp"
+#include "glm/gtc/type_ptr.hpp"
+#include "glm/ext/quaternion_float.hpp"
+#include "glm/gtx/quaternion.hpp"
+#include "glm/gtx/matrix_decompose.hpp"
+#include <boost/json.hpp>
+
+// Common types and constants used in the GLTF implementation
+namespace LL
+{
+    namespace GLTF
+    {
+        using Value = boost::json::value;
+
+        using mat4 = glm::mat4;
+        using vec4 = glm::vec4;
+        using vec3 = glm::vec3;
+        using vec2 = glm::vec2;
+        using quat = glm::quat;
+
+        constexpr S32 LINEAR = 9729;
+        constexpr S32 NEAREST = 9728;
+        constexpr S32 NEAREST_MIPMAP_NEAREST = 9984;
+        constexpr S32 LINEAR_MIPMAP_NEAREST = 9985;
+        constexpr S32 NEAREST_MIPMAP_LINEAR = 9986;
+        constexpr S32 LINEAR_MIPMAP_LINEAR = 9987;
+        constexpr S32 CLAMP_TO_EDGE = 33071;
+        constexpr S32 MIRRORED_REPEAT = 33648;
+        constexpr S32 REPEAT = 10497;
+
+
+        class Asset;
+        class Material;
+        class TextureInfo;
+        class NormalTextureInfo;
+        class OcclusionTextureInfo;
+        class Mesh;
+        class Node;
+        class Scene;
+        class Texture;
+        class Sampler;
+        class Image;
+        class Animation;
+        class Skin;
+        class Camera;
+        class Light;
+        class Primitive;
+        class Accessor;
+        class BufferView;
+        class Buffer;
+
+        enum class TextureType : U8
+        {
+            BASE_COLOR = 0,
+            NORMAL,
+            METALLIC_ROUGHNESS,
+            OCCLUSION,
+            EMISSIVE
+        };
+
+        constexpr U32 TEXTURE_TYPE_COUNT = 5;
+    }
+}
+
diff --git a/indra/newview/gltf/primitive.cpp b/indra/newview/gltf/primitive.cpp
index 46af87ebbb..7613d81af4 100644
--- a/indra/newview/gltf/primitive.cpp
+++ b/indra/newview/gltf/primitive.cpp
@@ -28,12 +28,299 @@
 
 #include "asset.h"
 #include "buffer_util.h"
+#include "../llviewershadermgr.h"
+
+#include "mikktspace/mikktspace.hh"
+
+#if LL_USESYSTEMLIBS
+#include <meshoptimizer.h>
+#else
+#include "meshoptimizer/meshoptimizer.h"
+#endif
 
-#include "../lltinygltfhelper.h"
 
 using namespace LL::GLTF;
+using namespace boost::json;
+
 
-void Primitive::allocateGLResources(Asset& asset)
+// Mesh data useful for Mikktspace tangent generation (and flat normal generation)
+struct MikktMesh
+{
+    std::vector<LLVector3> p;       //positions
+    std::vector<LLVector3> n;       //normals
+    std::vector<LLVector4> t;       //tangents
+    std::vector<LLVector2> tc0;     //texcoords 0
+    std::vector<LLVector2> tc1;     //texcoords 1
+    std::vector<LLColor4U> c;       //colors
+    std::vector<LLVector4> w;       //weights
+    std::vector<U64> j;             //joints
+
+    // initialize from src primitive and make an unrolled triangle list
+    // returns false if the Primitive cannot be converted to a triangle list
+    bool copy(const Primitive* prim)
+    {
+        bool indexed = !prim->mIndexArray.empty();
+        size_t vert_count = indexed ? prim->mIndexArray.size() : prim->mPositions.size();
+
+        size_t triangle_count = 0;
+
+        if (prim->mMode == Primitive::Mode::TRIANGLE_STRIP ||
+            prim->mMode == Primitive::Mode::TRIANGLE_FAN)
+        {
+            triangle_count = vert_count - 2;
+        }
+        else if (prim->mMode == Primitive::Mode::TRIANGLES)
+        {
+            triangle_count = vert_count / 3;
+        }
+        else
+        {
+            LL_WARNS("GLTF") << "Unsupported primitive mode for conversion to triangles: " << (S32)prim->mMode << LL_ENDL;
+            return false;
+        }
+
+        vert_count = triangle_count * 3;
+        llassert(vert_count <= size_t(U32_MAX));  // triangle_count will also naturally be under the limit
+
+        p.resize(vert_count);
+        n.resize(vert_count);
+        tc0.resize(vert_count);
+        c.resize(vert_count);
+
+        bool has_normals = !prim->mNormals.empty();
+        if (has_normals)
+        {
+            n.resize(vert_count);
+        }
+        bool has_tangents = !prim->mTangents.empty();
+        if (has_tangents)
+        {
+            t.resize(vert_count);
+        }
+
+        bool rigged = !prim->mWeights.empty();
+        if (rigged)
+        {
+            w.resize(vert_count);
+            j.resize(vert_count);
+        }
+
+        bool multi_uv = !prim->mTexCoords1.empty();
+        if (multi_uv)
+        {
+            tc1.resize(vert_count);
+        }
+
+        for (U32 tri_idx = 0; tri_idx < U32(triangle_count); ++tri_idx)
+        {
+            U32 idx[3];
+
+            if (prim->mMode == Primitive::Mode::TRIANGLES)
+            {
+                idx[0] = tri_idx * 3;
+                idx[1] = tri_idx * 3 + 1;
+                idx[2] = tri_idx * 3 + 2;
+            }
+            else if (prim->mMode == Primitive::Mode::TRIANGLE_STRIP)
+            {
+                idx[0] = tri_idx;
+                idx[1] = tri_idx + 1;
+                idx[2] = tri_idx + 2;
+
+                if (tri_idx % 2 != 0)
+                {
+                    std::swap(idx[1], idx[2]);
+                }
+            }
+            else if (prim->mMode == Primitive::Mode::TRIANGLE_FAN)
+            {
+                idx[0] = 0;
+                idx[1] = tri_idx + 1;
+                idx[2] = tri_idx + 2;
+            }
+
+            if (indexed)
+            {
+                idx[0] = prim->mIndexArray[idx[0]];
+                idx[1] = prim->mIndexArray[idx[1]];
+                idx[2] = prim->mIndexArray[idx[2]];
+            }
+
+            for (U32 v = 0; v < 3; ++v)
+            {
+                U32 i = tri_idx * 3 + v;
+                p[i].set(prim->mPositions[idx[v]].getF32ptr());
+                tc0[i].set(prim->mTexCoords0[idx[v]]);
+                c[i] = prim->mColors[idx[v]];
+
+                if (multi_uv)
+                {
+                    tc1[i].set(prim->mTexCoords1[idx[v]]);
+                }
+
+                if (has_normals)
+                {
+                    n[i].set(prim->mNormals[idx[v]].getF32ptr());
+                }
+
+                if (rigged)
+                {
+                    w[i].set(prim->mWeights[idx[v]].getF32ptr());
+                    j[i] = prim->mJoints[idx[v]];
+                }
+            }
+        }
+
+        return true;
+    }
+
+    void genNormals()
+    {
+        size_t tri_count = p.size() / 3;
+        for (size_t i = 0; i < tri_count; ++i)
+        {
+            LLVector3 v0 = p[i * 3];
+            LLVector3 v1 = p[i * 3 + 1];
+            LLVector3 v2 = p[i * 3 + 2];
+
+            LLVector3 normal = (v1 - v0) % (v2 - v0);
+            normal.normalize();
+
+            n[i * 3] = normal;
+            n[i * 3 + 1] = normal;
+            n[i * 3 + 2] = normal;
+        }
+    }
+
+    void genTangents()
+    {
+        t.resize(p.size());
+        mikk::Mikktspace ctx(*this);
+        ctx.genTangSpace();
+    }
+
+    // write to target primitive as an indexed triangle list
+    // Only modifies runtime data, does not modify the original GLTF data
+    void write(Primitive* prim) const
+    {
+        //re-weld
+        std::vector<meshopt_Stream> mos =
+        {
+            { &p[0], sizeof(LLVector3), sizeof(LLVector3) },
+            { &n[0], sizeof(LLVector3), sizeof(LLVector3) },
+            { &t[0], sizeof(LLVector4), sizeof(LLVector4) },
+            { &tc0[0], sizeof(LLVector2), sizeof(LLVector2) },
+            { &c[0], sizeof(LLColor4U), sizeof(LLColor4U) }
+        };
+
+        if (!w.empty())
+        {
+            mos.push_back({ &w[0], sizeof(LLVector4), sizeof(LLVector4) });
+            mos.push_back({ &j[0], sizeof(U64), sizeof(U64) });
+        }
+
+        if (!tc1.empty())
+        {
+            mos.push_back({ &tc1[0], sizeof(LLVector2), sizeof(LLVector2) });
+        }
+
+        std::vector<U32> remap;
+        remap.resize(p.size());
+
+        size_t stream_count = mos.size();
+
+        size_t vert_count = meshopt_generateVertexRemapMulti(&remap[0], nullptr, p.size(), p.size(), mos.data(), stream_count);
+
+        prim->mTexCoords0.resize(vert_count);
+        prim->mNormals.resize(vert_count);
+        prim->mTangents.resize(vert_count);
+        prim->mPositions.resize(vert_count);
+        prim->mColors.resize(vert_count);
+        if (!w.empty())
+        {
+            prim->mWeights.resize(vert_count);
+            prim->mJoints.resize(vert_count);
+        }
+        if (!tc1.empty())
+                    {
+            prim->mTexCoords1.resize(vert_count);
+        }
+
+        prim->mIndexArray.resize(remap.size());
+
+        for (int i = 0; i < remap.size(); ++i)
+        {
+            U32 src_idx = i;
+            U32 dst_idx = remap[i];
+
+            prim->mIndexArray[i] = dst_idx;
+
+            prim->mPositions[dst_idx].load3(p[src_idx].mV);
+            prim->mNormals[dst_idx].load3(n[src_idx].mV);
+            prim->mTexCoords0[dst_idx] = tc0[src_idx];
+            prim->mTangents[dst_idx].loadua(t[src_idx].mV);
+            prim->mColors[dst_idx] = c[src_idx];
+
+            if (!w.empty())
+            {
+                prim->mWeights[dst_idx].loadua(w[src_idx].mV);
+                prim->mJoints[dst_idx] = j[src_idx];
+            }
+
+            if (!tc1.empty())
+            {
+                prim->mTexCoords1[dst_idx] = tc1[src_idx];
+            }
+        }
+
+        prim->mGLMode = LLRender::TRIANGLES;
+    }
+
+    uint32_t GetNumFaces()
+    {
+        return uint32_t(p.size()/3);
+    }
+
+    uint32_t GetNumVerticesOfFace(const uint32_t face_num)
+    {
+        return 3;
+    }
+
+    mikk::float3 GetPosition(const uint32_t face_num, const uint32_t vert_num)
+    {
+        F32* v = p[face_num * 3 + vert_num].mV;
+        return mikk::float3(v);
+    }
+
+    mikk::float3 GetTexCoord(const uint32_t face_num, const uint32_t vert_num)
+    {
+        F32* uv = tc0[face_num * 3 + vert_num].mV;
+        return mikk::float3(uv[0], 1.f-uv[1], 1.0f);
+    }
+
+    mikk::float3 GetNormal(const uint32_t face_num, const uint32_t vert_num)
+    {
+        F32* normal = n[face_num * 3 + vert_num].mV;
+        return mikk::float3(normal);
+    }
+
+    void SetTangentSpace(const uint32_t face_num, const uint32_t vert_num, mikk::float3 T, bool orientation)
+    {
+        S32 i = face_num * 3 + vert_num;
+        t[i].set(T.x, T.y, T.z, orientation ? 1.0f : -1.0f);
+    }
+};
+
+
+static void vertical_flip(std::vector<LLVector2>& texcoords)
+{
+    for (auto& tc : texcoords)
+    {
+        tc[1] = 1.f - tc[1];
+    }
+}
+
+bool Primitive::prep(Asset& asset)
 {
     // allocate vertex buffer
     // We diverge from the intent of the GLTF format here to work with our existing render pipeline
@@ -66,7 +353,11 @@ void Primitive::allocateGLResources(Asset& asset)
         }
         else if (attribName == "TEXCOORD_0")
         {
-            copy(asset, accessor, mTexCoords);
+            copy(asset, accessor, mTexCoords0);
+        }
+        else if (attribName == "TEXCOORD_1")
+        {
+            copy(asset, accessor, mTexCoords1);
         }
         else if (attribName == "JOINTS_0")
         {
@@ -83,41 +374,46 @@ void Primitive::allocateGLResources(Asset& asset)
     {
         Accessor& accessor = asset.mAccessors[mIndices];
         copy(asset, accessor, mIndexArray);
+
+        for (auto& idx : mIndexArray)
+        {
+            if (idx >= mPositions.size())
+            {
+                LL_WARNS("GLTF") << "Invalid index array" << LL_ENDL;
+                return false;
+            }
+        }
+    }
+    else
+    { //everything must be indexed at runtime
+        mIndexArray.resize(mPositions.size());
+        for (U32 i = 0; i < mPositions.size(); ++i)
+        {
+            mIndexArray[i] = i;
+        }
     }
 
-    U32 mask = ATTRIBUTE_MASK;
+    U32 mask = LLVertexBuffer::MAP_VERTEX;
+
+    mShaderVariant = 0;
 
     if (!mWeights.empty())
     {
+        mShaderVariant |= LLGLSLShader::GLTFVariant::RIGGED;
         mask |= LLVertexBuffer::MAP_WEIGHT4;
+        mask |= LLVertexBuffer::MAP_JOINT;
     }
 
-    mVertexBuffer = new LLVertexBuffer(mask);
-    mVertexBuffer->allocateBuffer(mPositions.size(), mIndexArray.size()*2); // double the size of the index buffer for 32-bit indices
-
-    mVertexBuffer->setBuffer();
-    mVertexBuffer->setPositionData(mPositions.data());
-
-    if (!mIndexArray.empty())
+    if (mTexCoords0.empty())
     {
-        mVertexBuffer->setIndexData(mIndexArray.data());
+        mTexCoords0.resize(mPositions.size());
     }
 
-    if (mTexCoords.empty())
-    {
-        mTexCoords.resize(mPositions.size());
-    }
+    mask |= LLVertexBuffer::MAP_TEXCOORD0;
 
-    // flip texcoord y, upload, then flip back (keep the off-spec data in vram only)
-    for (auto& tc : mTexCoords)
+    if (!mTexCoords1.empty())
     {
-        tc[1] = 1.f - tc[1];
-    }
-    mVertexBuffer->setTexCoord0Data(mTexCoords.data());
-
-    for (auto& tc : mTexCoords)
-    {
-        tc[1] = 1.f - tc[1];
+        mask |= LLVertexBuffer::MAP_TEXCOORD1;
     }
 
     if (mColors.empty())
@@ -125,54 +421,176 @@ void Primitive::allocateGLResources(Asset& asset)
         mColors.resize(mPositions.size(), LLColor4U::white);
     }
 
+    mask |= LLVertexBuffer::MAP_COLOR;
+
+    bool unlit = false;
+
     // bake material basecolor into color array
     if (mMaterial != INVALID_INDEX)
     {
         const Material& material = asset.mMaterials[mMaterial];
-        LLColor4 baseColor = material.mMaterial->mBaseColor;
+        LLColor4 baseColor(glm::value_ptr(material.mPbrMetallicRoughness.mBaseColorFactor));
         for (auto& dst : mColors)
         {
             dst = LLColor4U(baseColor * LLColor4(dst));
         }
+
+        if (material.mUnlit.mPresent)
+        { // material uses KHR_materials_unlit
+            mShaderVariant |= LLGLSLShader::GLTFVariant::UNLIT;
+            unlit = true;
+        }
+
+        if (material.isMultiUV())
+        {
+            mShaderVariant |= LLGLSLShader::GLTFVariant::MULTI_UV;
+        }
+    }
+
+    if (mNormals.empty() && !unlit)
+    {
+        mTangents.clear();
+
+        if (mMode == Mode::POINTS || mMode == Mode::LINES || mMode == Mode::LINE_LOOP || mMode == Mode::LINE_STRIP)
+        { //no normals and no surfaces, this primitive is unlit
+            mTangents.clear();
+            mShaderVariant |= LLGLSLShader::GLTFVariant::UNLIT;
+            unlit = true;
+        }
+        else
+        {
+            // unroll into non-indexed array of flat shaded triangles
+            MikktMesh data;
+            if (!data.copy(this))
+            {
+                return false;
+            }
+
+            data.genNormals();
+            data.genTangents();
+            data.write(this);
+        }
+    }
+
+    if (mTangents.empty() && !unlit)
+    { // NOTE: must be done last because tangent generation rewrites the other arrays
+        // adapted from usage of Mikktspace in llvolume.cpp
+        if (mMode == Mode::POINTS || mMode == Mode::LINES || mMode == Mode::LINE_LOOP || mMode == Mode::LINE_STRIP)
+        {
+            // for points and lines, just make sure tangent is perpendicular to normal
+            mTangents.resize(mNormals.size());
+            LLVector4a up(0.f, 0.f, 1.f, 0.f);
+            LLVector4a left(1.f, 0.f, 0.f, 0.f);
+            for (U32 i = 0; i < mNormals.size(); ++i)
+            {
+                if (fabsf(mNormals[i].getF32ptr()[2]) < 0.999f)
+                {
+                    mTangents[i] = up.cross3(mNormals[i]);
+                }
+                else
+                {
+                    mTangents[i] = left.cross3(mNormals[i]);
+                }
+
+                mTangents[i].getF32ptr()[3] = 1.f;
+            }
+        }
+        else
+        {
+            MikktMesh data;
+            if (!data.copy(this))
+            {
+                return false;
+            }
+
+            data.genTangents();
+            data.write(this);
+        }
     }
 
-    mVertexBuffer->setColorData(mColors.data());
+    if (!mNormals.empty())
+    {
+        mask |= LLVertexBuffer::MAP_NORMAL;
+    }
 
-    if (mNormals.empty())
+    if (!mTangents.empty())
     {
-        mNormals.resize(mPositions.size(), LLVector4a(0, 0, 1, 0));
+        mask |= LLVertexBuffer::MAP_TANGENT;
     }
 
-    mVertexBuffer->setNormalData(mNormals.data());
+    mAttributeMask = mask;
 
-    if (mTangents.empty())
+    if (mMaterial != INVALID_INDEX)
     {
-        // TODO: generate tangents if needed
-        mTangents.resize(mPositions.size(), LLVector4a(1, 0, 0, 1));
+        Material& material = asset.mMaterials[mMaterial];
+        if (material.mAlphaMode == Material::AlphaMode::BLEND)
+        {
+            mShaderVariant |= LLGLSLShader::GLTFVariant::ALPHA_BLEND;
+        }
     }
 
-    mVertexBuffer->setTangentData(mTangents.data());
+    createOctree();
+
+    return true;
+}
+
+void Primitive::upload(LLVertexBuffer* buffer)
+{
+    mVertexBuffer = buffer;
+    // we store these buffer sizes as S32 elsewhere
+    llassert(mPositions.size() <= size_t(S32_MAX));
+    llassert(mIndexArray.size() <= size_t(S32_MAX / 2));
+
+    llassert(mVertexBuffer != nullptr);
+
+    // assert that buffer can hold this primitive
+    llassert(mVertexBuffer->getNumVerts() >= mPositions.size() + mVertexOffset);
+    llassert(mVertexBuffer->getNumIndices() >= mIndexArray.size() + mIndexOffset);
+    llassert(mVertexBuffer->getTypeMask() == mAttributeMask);
+
+    U32 offset = mVertexOffset;
+    U32 count = getVertexCount();
+
+    mVertexBuffer->setPositionData(mPositions.data(), offset, count);
+    mVertexBuffer->setColorData(mColors.data(), offset, count);
+
+    if (!mNormals.empty())
+    {
+        mVertexBuffer->setNormalData(mNormals.data(), offset, count);
+    }
+    if (!mTangents.empty())
+    {
+        mVertexBuffer->setTangentData(mTangents.data(), offset, count);
+    }
 
     if (!mWeights.empty())
     {
-        std::vector<LLVector4a> weight_data;
-        weight_data.resize(mWeights.size());
+        mVertexBuffer->setWeight4Data(mWeights.data(), offset, count);
+        mVertexBuffer->setJointData(mJoints.data(), offset, count);
+    }
 
-        F32 max_weight = 1.f - FLT_EPSILON*100.f;
-        LLVector4a maxw(max_weight, max_weight, max_weight, max_weight);
-        for (U32 i = 0; i < mWeights.size(); ++i)
-        {
-            LLVector4a& w = weight_data[i];
-            w.setMin(mWeights[i], maxw);
-            w.add(mJoints[i]);
-        };
+    // flip texcoord y, upload, then flip back (keep the off-spec data in vram only)
+    vertical_flip(mTexCoords0);
+    mVertexBuffer->setTexCoord0Data(mTexCoords0.data(), offset, count);
+    vertical_flip(mTexCoords0);
 
-        mVertexBuffer->setWeight4Data(weight_data.data());
+    if (!mTexCoords1.empty())
+    {
+        vertical_flip(mTexCoords1);
+        mVertexBuffer->setTexCoord1Data(mTexCoords1.data(), offset, count);
+        vertical_flip(mTexCoords1);
     }
 
-    createOctree();
-
-    mVertexBuffer->unbind();
+    if (!mIndexArray.empty())
+    {
+        std::vector<U32> index_array;
+        index_array.resize(mIndexArray.size());
+        for (U32 i = 0; i < mIndexArray.size(); ++i)
+        {
+            index_array[i] = mIndexArray[i] + mVertexOffset;
+        }
+        mVertexBuffer->setIndexData(index_array.data(), mIndexOffset, getIndexCount());
+    }
 }
 
 void initOctreeTriangle(LLVolumeTriangle* tri, F32 scaler, S32 i0, S32 i1, S32 i2, const LLVector4a& v0, const LLVector4a& v1, const LLVector4a& v2)
@@ -218,9 +636,9 @@ void Primitive::createOctree()
 
     F32 scaler = 0.25f;
 
-    if (mMode == TINYGLTF_MODE_TRIANGLES)
+    if (mMode == Mode::TRIANGLES)
     {
-        const U32 num_triangles = mVertexBuffer->getNumIndices() / 3;
+        const U32 num_triangles = getIndexCount() / 3;
         // Initialize all the triangles we need
         mOctreeTriangles.resize(num_triangles);
 
@@ -242,9 +660,9 @@ void Primitive::createOctree()
             mOctree->insert(tri);
         }
     }
-    else if (mMode == TINYGLTF_MODE_TRIANGLE_STRIP)
+    else if (mMode == Mode::TRIANGLE_STRIP)
     {
-        const U32 num_triangles = mVertexBuffer->getNumIndices() - 2;
+        const U32 num_triangles = getIndexCount() - 2;
         // Initialize all the triangles we need
         mOctreeTriangles.resize(num_triangles);
 
@@ -266,9 +684,9 @@ void Primitive::createOctree()
             mOctree->insert(tri);
         }
     }
-    else if (mMode == TINYGLTF_MODE_TRIANGLE_FAN)
+    else if (mMode == Mode::TRIANGLE_FAN)
     {
-        const U32 num_triangles = mVertexBuffer->getNumIndices() - 2;
+        const U32 num_triangles = getIndexCount() - 2;
         // Initialize all the triangles we need
         mOctreeTriangles.resize(num_triangles);
 
@@ -290,10 +708,10 @@ void Primitive::createOctree()
             mOctree->insert(tri);
         }
     }
-    else if (mMode == TINYGLTF_MODE_POINTS ||
-            mMode == TINYGLTF_MODE_LINE ||
-        mMode == TINYGLTF_MODE_LINE_LOOP ||
-        mMode == TINYGLTF_MODE_LINE_STRIP)
+    else if (mMode == Mode::POINTS ||
+            mMode == Mode::LINES ||
+        mMode == Mode::LINE_LOOP ||
+        mMode == Mode::LINE_STRIP)
     {
         // nothing to do, no volume... maybe add some collision geometry around these primitive types?
     }
@@ -327,13 +745,13 @@ const LLVolumeTriangle* Primitive::lineSegmentIntersect(const LLVector4a& start,
     //create a proxy LLVolumeFace for the raycast
     LLVolumeFace face;
     face.mPositions = mPositions.data();
-    face.mTexCoords = mTexCoords.data();
+    face.mTexCoords = mTexCoords0.data();
     face.mNormals = mNormals.data();
     face.mTangents = mTangents.data();
     face.mIndices = nullptr; // unreferenced
 
-    face.mNumIndices = mIndexArray.size();
-    face.mNumVertices = mPositions.size();
+    face.mNumIndices = S32(mIndexArray.size());
+    face.mNumVertices = S32(mPositions.size());
 
     LLOctreeTriangleRayIntersect intersect(start, dir, &face, &closest_t, intersection, tex_coord, normal, tangent_out);
     intersect.traverse(mOctree);
@@ -351,50 +769,48 @@ Primitive::~Primitive()
     mOctree = nullptr;
 }
 
-
-const Primitive& Primitive::operator=(const tinygltf::Primitive& src)
+LLRender::eGeomModes gltf_mode_to_gl_mode(Primitive::Mode mode)
 {
-    // load material
-    mMaterial = src.material;
-
-    // load mode
-    mMode = src.mode;
-
-    // load indices
-    mIndices = src.indices;
-
-    // load attributes
-    for (auto& it : src.attributes)
-    {
-        mAttributes[it.first] = it.second;
-    }
-
-    switch (mMode)
-    {
-    case TINYGLTF_MODE_POINTS:
-        mGLMode = LLRender::POINTS;
-        break;
-    case TINYGLTF_MODE_LINE:
-        mGLMode = LLRender::LINES;
-        break;
-    case TINYGLTF_MODE_LINE_LOOP:
-        mGLMode = LLRender::LINE_LOOP;
-        break;
-    case TINYGLTF_MODE_LINE_STRIP:
-        mGLMode = LLRender::LINE_STRIP;
-        break;
-    case TINYGLTF_MODE_TRIANGLES:
-        mGLMode = LLRender::TRIANGLES;
-        break;
-    case TINYGLTF_MODE_TRIANGLE_STRIP:
-        mGLMode = LLRender::TRIANGLE_STRIP;
-        break;
-    case TINYGLTF_MODE_TRIANGLE_FAN:
-        mGLMode = LLRender::TRIANGLE_FAN;
-        break;
+    switch (mode)
+    {
+    case Primitive::Mode::POINTS:
+        return LLRender::POINTS;
+    case Primitive::Mode::LINES:
+        return LLRender::LINES;
+    case Primitive::Mode::LINE_LOOP:
+        return LLRender::LINE_LOOP;
+    case Primitive::Mode::LINE_STRIP:
+        return LLRender::LINE_STRIP;
+    case Primitive::Mode::TRIANGLES:
+        return LLRender::TRIANGLES;
+    case Primitive::Mode::TRIANGLE_STRIP:
+        return LLRender::TRIANGLE_STRIP;
+    case Primitive::Mode::TRIANGLE_FAN:
+        return LLRender::TRIANGLE_FAN;
     default:
-        mGLMode = GL_TRIANGLES;
+        return LLRender::TRIANGLES;
     }
+}
+
+void Primitive::serialize(boost::json::object& dst) const
+{
+    write(mMaterial, "material", dst, -1);
+    write(mMode, "mode", dst, Primitive::Mode::TRIANGLES);
+    write(mIndices, "indices", dst, INVALID_INDEX);
+    write(mAttributes, "attributes", dst);
+}
 
+const Primitive& Primitive::operator=(const Value& src)
+{
+    if (src.is_object())
+    {
+        copy(src, "material", mMaterial);
+        copy(src, "mode", mMode);
+        copy(src, "indices", mIndices);
+        copy(src, "attributes", mAttributes);
+
+        mGLMode = gltf_mode_to_gl_mode(mMode);
+    }
     return *this;
 }
+
diff --git a/indra/newview/gltf/primitive.h b/indra/newview/gltf/primitive.h
index 07e8e7deb2..304eb26432 100644
--- a/indra/newview/gltf/primitive.h
+++ b/indra/newview/gltf/primitive.h
@@ -28,35 +28,39 @@
 
 #include "llvertexbuffer.h"
 #include "llvolumeoctree.h"
+#include "boost/json.hpp"
 
 // LL GLTF Implementation
 namespace LL
 {
     namespace GLTF
     {
+        using Value = boost::json::value;
         class Asset;
 
-        constexpr U32 ATTRIBUTE_MASK =
-            LLVertexBuffer::MAP_VERTEX |
-            LLVertexBuffer::MAP_NORMAL |
-            LLVertexBuffer::MAP_TEXCOORD0 |
-            LLVertexBuffer::MAP_TANGENT |
-            LLVertexBuffer::MAP_COLOR;
-
         class Primitive
         {
         public:
-            ~Primitive();
+            enum class Mode : U8
+            {
+                POINTS,
+                LINES,
+                LINE_LOOP,
+                LINE_STRIP,
+                TRIANGLES,
+                TRIANGLE_STRIP,
+                TRIANGLE_FAN
+            };
 
-            // GPU copy of mesh data
-            LLPointer<LLVertexBuffer> mVertexBuffer;
+            ~Primitive();
 
             // CPU copy of mesh data
-            std::vector<LLVector2> mTexCoords;
+            std::vector<LLVector2> mTexCoords0;
+            std::vector<LLVector2> mTexCoords1;
             std::vector<LLVector4a> mNormals;
             std::vector<LLVector4a> mTangents;
             std::vector<LLVector4a> mPositions;
-            std::vector<LLVector4a> mJoints;
+            std::vector<U64> mJoints;
             std::vector<LLVector4a> mWeights;
             std::vector<LLColor4U> mColors;
             std::vector<U32> mIndexArray;
@@ -64,18 +68,33 @@ namespace LL
             // raycast acceleration structure
             LLPointer<LLVolumeOctree> mOctree;
             std::vector<LLVolumeTriangle> mOctreeTriangles;
-            
+
             S32 mMaterial = -1;
-            U32 mMode = TINYGLTF_MODE_TRIANGLES; // default to triangles
-            U32 mGLMode = LLRender::TRIANGLES;
+            Mode mMode = Mode::TRIANGLES; // default to triangles
+            LLRender::eGeomModes mGLMode = LLRender::TRIANGLES; // for use with LLRender
             S32 mIndices = -1;
-            std::unordered_map<std::string, int> mAttributes;
+
+            // shader variant according to LLGLSLShader::GLTFVariant flags
+            U8 mShaderVariant = 0;
+
+            // vertex attribute mask
+            U32 mAttributeMask = 0;
+
+            // backpointer to vertex buffer (owned by Asset)
+            LLPointer<LLVertexBuffer> mVertexBuffer;
+            U32 mVertexOffset = 0;
+            U32 mIndexOffset = 0;
+
+            U32 getVertexCount() const { return (U32) mPositions.size(); }
+            U32 getIndexCount() const { return (U32) mIndexArray.size(); }
+
+            std::unordered_map<std::string, S32> mAttributes;
 
             // create octree based on vertex buffer
             // must be called before buffer is unmapped and after buffer is populated with good data
             void createOctree();
 
-            //get the LLVolumeTriangle that intersects with the given line segment at the point 
+            //get the LLVolumeTriangle that intersects with the given line segment at the point
             //closest to start.  Moves end to the point of intersection.  Returns nullptr if no intersection.
             //Line segment must be in the same coordinate frame as this Primitive
             const LLVolumeTriangle* lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
@@ -84,10 +103,16 @@ namespace LL
                 LLVector4a* normal = NULL,               // return the surface normal at the intersection point
                 LLVector4a* tangent = NULL             // return the surface tangent at the intersection point
             );
-            
-            const Primitive& operator=(const tinygltf::Primitive& src);
 
-            void allocateGLResources(Asset& asset);
+            void serialize(boost::json::object& obj) const;
+            const Primitive& operator=(const Value& src);
+
+            bool prep(Asset& asset);
+
+            // upload geometry to given vertex buffer
+            // asserts that buffer is bound
+            // asserts that buffer is valid for this primitive
+            void upload(LLVertexBuffer* buffer);
         };
     }
 }
diff --git a/indra/newview/gltfscenemanager.cpp b/indra/newview/gltfscenemanager.cpp
index 7003eab6d0..7b2de4d6de 100644
--- a/indra/newview/gltfscenemanager.cpp
+++ b/indra/newview/gltfscenemanager.cpp
@@ -39,7 +39,14 @@
 #include "gltf/asset.h"
 #include "pipeline.h"
 #include "llviewershadermgr.h"
+#include "llviewertexturelist.h"
+#include "llimagej2c.h"
+#include "llfloaterperms.h"
+#include "llagentbenefits.h"
+#include "llfilesystem.h"
+#include "boost/json.hpp"
 
+#define GLTF_SIM_SUPPORT 1
 
 using namespace LL;
 
@@ -66,38 +73,253 @@ void GLTFSceneManager::load()
                 }
             },
             LLFilePicker::FFLOAD_GLTF,
-            true);
+            false);
     }
     else
     {
-        LLNotificationsUtil::add("GLTFPreviewSelection");
+        LLNotificationsUtil::add("GLTFOpenSelection");
     }
 }
 
-void GLTFSceneManager::load(const std::string& filename)
+void GLTFSceneManager::saveAs()
 {
-    tinygltf::Model model;
-    LLTinyGLTFHelper::loadModel(filename, model);
-
-    LLPointer<Asset> asset = new Asset();
-    *asset = model;
+    LLViewerObject* obj = LLSelectMgr::instance().getSelection()->getFirstRootObject();
+    if (obj && obj->mGLTFAsset)
+    {
+        LLFilePickerReplyThread::startPicker(
+            [](const std::vector<std::string>& filenames, LLFilePicker::ELoadFilter load_filter, LLFilePicker::ESaveFilter save_filter)
+            {
+                if (LLAppViewer::instance()->quitRequested())
+                {
+                    return;
+                }
+                if (filenames.size() > 0)
+                {
+                    GLTFSceneManager::instance().save(filenames[0]);
+                }
+            },
+            LLFilePicker::FFSAVE_GLTF,
+            "scene.gltf");
+    }
+    else
+    {
+        LLNotificationsUtil::add("GLTFSaveSelection");
+    }
+}
 
-    gDebugProgram.bind(); // bind a shader to satisfy LLVertexBuffer assertions
-    asset->allocateGLResources(filename, model);
-    asset->updateTransforms();
+void GLTFSceneManager::uploadSelection()
+{
+    if (mUploadingAsset)
+    { // upload already in progress
+        LLNotificationsUtil::add("GLTFUploadInProgress");
+        return;
+    }
 
-    // hang the asset off the currently selected object, or off of the avatar if no object is selected
     LLViewerObject* obj = LLSelectMgr::instance().getSelection()->getFirstRootObject();
+    if (obj && obj->mGLTFAsset)
+    {
+        // make a copy of the asset prior to uploading
+        mUploadingAsset = std::make_shared<Asset>();
+        mUploadingObject = obj;
+        *mUploadingAsset = *obj->mGLTFAsset;
 
-    if (obj)
-    { // assign to self avatar
-        obj->mGLTFAsset = asset;
+        GLTF::Asset& asset = *mUploadingAsset;
+
+        for (auto& image : asset.mImages)
+        {
+            if (image.mTexture.notNull())
+            {
+                mPendingImageUploads++;
+
+                LLPointer<LLImageRaw> raw;
+
+                if (image.mBufferView != INVALID_INDEX)
+                {
+                    BufferView& view = asset.mBufferViews[image.mBufferView];
+                    Buffer& buffer = asset.mBuffers[view.mBuffer];
+
+                    raw = LLViewerTextureManager::getRawImageFromMemory(buffer.mData.data() + view.mByteOffset, view.mByteLength, image.mMimeType);
+
+                    image.clearData(asset);
+                }
+                else
+                {
+                    raw = image.mTexture->getCachedRawImage();
+                }
+
+                if (raw.notNull())
+                {
+                    LLPointer<LLImageJ2C> j2c = LLViewerTextureList::convertToUploadFile(raw);
+
+                    std::string buffer;
+                    buffer.assign((const char*)j2c->getData(), j2c->getDataSize());
+
+                    LLUUID asset_id = LLUUID::generateNewID();
+
+                    std::string name;
+                    S32 idx = (S32)(&image - &asset.mImages[0]);
+
+                    if (image.mName.empty())
+                    {
+
+                        name = llformat("Image_%d", idx);
+                    }
+                    else
+                    {
+                        name = image.mName;
+                    }
 
-        if (std::find(mObjects.begin(), mObjects.end(), obj) == mObjects.end())
+                    LLNewBufferedResourceUploadInfo::uploadFailure_f failure = [this](LLUUID assetId, LLSD response, std::string reason)
+                        {
+                            // TODO: handle failure
+                            mPendingImageUploads--;
+                            return false;
+                        };
+
+
+                    LLNewBufferedResourceUploadInfo::uploadFinish_f finish = [this, idx, raw, j2c](LLUUID assetId, LLSD response)
+                        {
+                            if (mUploadingAsset && mUploadingAsset->mImages.size() > idx)
+                            {
+                                mUploadingAsset->mImages[idx].mUri = assetId.asString();
+                                mPendingImageUploads--;
+                            }
+                        };
+
+                    S32 expected_upload_cost = LLAgentBenefitsMgr::current().getTextureUploadCost(j2c);
+
+                    LLResourceUploadInfo::ptr_t uploadInfo(std::make_shared<LLNewBufferedResourceUploadInfo>(
+                        buffer,
+                        asset_id,
+                        name,
+                        name,
+                        0,
+                        LLFolderType::FT_TEXTURE,
+                        LLInventoryType::IT_TEXTURE,
+                        LLAssetType::AT_TEXTURE,
+                        LLFloaterPerms::getNextOwnerPerms("Uploads"),
+                        LLFloaterPerms::getGroupPerms("Uploads"),
+                        LLFloaterPerms::getEveryonePerms("Uploads"),
+                        expected_upload_cost,
+                        false,
+                        finish,
+                        failure));
+
+                    upload_new_resource(uploadInfo);
+                }
+            }
+        }
+
+        // upload .bin
+        for (auto& bin : asset.mBuffers)
         {
-            mObjects.push_back(obj);
+            mPendingBinaryUploads++;
+
+            S32 idx = (S32)(&bin - &asset.mBuffers[0]);
+
+            std::string buffer;
+            buffer.assign((const char*)bin.mData.data(), bin.mData.size());
+
+            LLUUID asset_id = LLUUID::generateNewID();
+
+            LLNewBufferedResourceUploadInfo::uploadFailure_f failure = [this](LLUUID assetId, LLSD response, std::string reason)
+                {
+                    // TODO: handle failure
+                    mPendingBinaryUploads--;
+                    mUploadingAsset = nullptr;
+                    mUploadingObject = nullptr;
+                    LL_WARNS("GLTF") << "Failed to upload GLTF binary: " << reason << LL_ENDL;
+                    LL_WARNS("GLTF") << response << LL_ENDL;
+                    return false;
+                };
+
+            LLNewBufferedResourceUploadInfo::uploadFinish_f finish = [this, idx](LLUUID assetId, LLSD response)
+                {
+                    if (mUploadingAsset && mUploadingAsset->mBuffers.size() > idx)
+                    {
+                        mUploadingAsset->mBuffers[idx].mUri = assetId.asString();
+                        mPendingBinaryUploads--;
+
+                        // HACK: save buffer to cache to emulate a successful download
+                        LLFileSystem cache(assetId, LLAssetType::AT_GLTF_BIN, LLFileSystem::WRITE);
+                        auto& data = mUploadingAsset->mBuffers[idx].mData;
+
+                        llassert(data.size() <= size_t(S32_MAX));
+                        cache.write((const U8 *) data.data(), S32(data.size()));
+                    }
+                };
+#if GLTF_SIM_SUPPORT
+            S32 expected_upload_cost = 1;
+
+            LLResourceUploadInfo::ptr_t uploadInfo(std::make_shared<LLNewBufferedResourceUploadInfo>(
+                buffer,
+                asset_id,
+                "",
+                "",
+                0,
+                LLFolderType::FT_NONE,
+                LLInventoryType::IT_GLTF_BIN,
+                LLAssetType::AT_GLTF_BIN,
+                LLFloaterPerms::getNextOwnerPerms("Uploads"),
+                LLFloaterPerms::getGroupPerms("Uploads"),
+                LLFloaterPerms::getEveryonePerms("Uploads"),
+                expected_upload_cost,
+                false,
+                finish,
+                failure));
+
+            upload_new_resource(uploadInfo);
+#else
+            // dummy finish
+            finish(LLUUID::generateNewID(), LLSD());
+#endif
+        }
+    }
+    else
+    {
+        LLNotificationsUtil::add("GLTFUploadSelection");
+    }
+}
+
+void GLTFSceneManager::save(const std::string& filename)
+{
+    LLViewerObject* obj = LLSelectMgr::instance().getSelection()->getFirstRootObject();
+    if (obj && obj->mGLTFAsset)
+    {
+        Asset* asset = obj->mGLTFAsset.get();
+        if (!asset->save(filename))
+        {
+            LLNotificationsUtil::add("GLTFSaveFailed");
+        }
+    }
+}
+
+void GLTFSceneManager::load(const std::string& filename)
+{
+    std::shared_ptr<Asset> asset = std::make_shared<Asset>();
+
+    if (asset->load(filename))
+    {
+        gDebugProgram.bind(); // bind a shader to satisfy LLVertexBuffer assertions
+        asset->updateTransforms();
+
+        // hang the asset off the currently selected object, or off of the avatar if no object is selected
+        LLViewerObject* obj = LLSelectMgr::instance().getSelection()->getFirstRootObject();
+
+        if (obj)
+        { // assign to self avatar
+            obj->mGLTFAsset = asset;
+            obj->markForUpdate();
+            if (std::find(mObjects.begin(), mObjects.end(), obj) == mObjects.end())
+            {
+                mObjects.push_back(obj);
+            }
         }
     }
+    else
+    {
+        LLNotificationsUtil::add("GLTFLoadFailed");
+    }
 }
 
 GLTFSceneManager::~GLTFSceneManager()
@@ -115,8 +337,108 @@ void GLTFSceneManager::renderAlpha()
     render(false);
 }
 
+void GLTFSceneManager::addGLTFObject(LLViewerObject* obj, LLUUID gltf_id)
+{
+    llassert(obj->getVolume()->getParams().getSculptID() == gltf_id);
+    llassert(obj->getVolume()->getParams().getSculptType() == LL_SCULPT_TYPE_GLTF);
+
+    obj->ref();
+    gAssetStorage->getAssetData(gltf_id, LLAssetType::AT_GLTF, onGLTFLoadComplete, obj);
+}
+
+//static
+void GLTFSceneManager::onGLTFBinLoadComplete(const LLUUID& id, LLAssetType::EType asset_type, void* user_data, S32 status, LLExtStat ext_status)
+{
+    LLViewerObject* obj = (LLViewerObject*)user_data;
+    llassert(asset_type == LLAssetType::AT_GLTF_BIN);
+
+    if (status == LL_ERR_NOERR)
+    {
+        if (obj)
+        {
+            // find the Buffer with the given id in the asset
+            if (obj->mGLTFAsset)
+            {
+                obj->mGLTFAsset->mPendingBuffers--;
+
+
+                if (obj->mGLTFAsset->mPendingBuffers == 0)
+                {
+                    if (obj->mGLTFAsset->prep())
+                    {
+                        GLTFSceneManager& mgr = GLTFSceneManager::instance();
+                        if (std::find(mgr.mObjects.begin(), mgr.mObjects.end(), obj) == mgr.mObjects.end())
+                        {
+                            GLTFSceneManager::instance().mObjects.push_back(obj);
+                        }
+                    }
+                    else
+                    {
+                        LL_WARNS("GLTF") << "Failed to prepare GLTF asset: " << id << LL_ENDL;
+                        obj->mGLTFAsset = nullptr;
+                    }
+                }
+            }
+        }
+    }
+    else
+    {
+        LL_WARNS("GLTF") << "Failed to load GLTF asset: " << id << LL_ENDL;
+        obj->unref();
+    }
+}
+
+//static
+void GLTFSceneManager::onGLTFLoadComplete(const LLUUID& id, LLAssetType::EType asset_type, void* user_data, S32 status, LLExtStat ext_status)
+{
+    LLViewerObject* obj = (LLViewerObject*)user_data;
+    llassert(asset_type == LLAssetType::AT_GLTF);
+
+    if (status == LL_ERR_NOERR)
+    {
+        if (obj)
+        {
+            LLFileSystem file(id, asset_type, LLFileSystem::READ);
+            std::string data;
+            S32 file_size = file.getSize();
+            data.resize(file_size);
+            file.read((U8*)data.data(), file_size);
+
+            boost::json::value json = boost::json::parse(data);
+
+            std::shared_ptr<Asset> asset = std::make_shared<Asset>(json);
+            obj->mGLTFAsset = asset;
+
+            for (auto& buffer : asset->mBuffers)
+            {
+                // for now just assume the buffer is already in the asset cache
+                LLUUID buffer_id;
+                if (LLUUID::parseUUID(buffer.mUri, &buffer_id))
+                {
+                    asset->mPendingBuffers++;
+
+                    gAssetStorage->getAssetData(buffer_id, LLAssetType::AT_GLTF_BIN, onGLTFBinLoadComplete, obj);
+                }
+                else
+                {
+                    LL_WARNS("GLTF") << "Buffer URI is not a valid UUID: " << buffer.mUri << LL_ENDL;
+                    obj->unref();
+                    return;
+                }
+            }
+        }
+    }
+    else
+    {
+        LL_WARNS("GLTF") << "Failed to load GLTF asset: " << id << LL_ENDL;
+        obj->unref();
+    }
+}
+
 void GLTFSceneManager::update()
 {
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+
     for (U32 i = 0; i < mObjects.size(); ++i)
     {
         if (mObjects[i]->isDead() || mObjects[i]->mGLTFAsset == nullptr)
@@ -126,21 +448,125 @@ void GLTFSceneManager::update()
             continue;
         }
 
-        Asset* asset = mObjects[i]->mGLTFAsset;
+        mObjects[i]->mGLTFAsset->update();
+    }
+
+    // process pending uploads
+    if (mUploadingAsset && !mGLTFUploadPending)
+    {
+        if (mPendingImageUploads == 0 && mPendingBinaryUploads == 0)
+        {
+            boost::json::object obj;
+            mUploadingAsset->serialize(obj);
+            std::string buffer = boost::json::serialize(obj, {});
+
+            LLNewBufferedResourceUploadInfo::uploadFailure_f failure = [this](LLUUID assetId, LLSD response, std::string reason)
+                {
+                    // TODO: handle failure
+                    LL_WARNS("GLTF") << "Failed to upload GLTF json: " << reason << LL_ENDL;
+                    LL_WARNS("GLTF") << response << LL_ENDL;
 
-        asset->update();
+                    mUploadingAsset = nullptr;
+                    mUploadingObject = nullptr;
+                    mGLTFUploadPending = false;
+                    return false;
+                };
+
+            LLNewBufferedResourceUploadInfo::uploadFinish_f finish = [this, buffer](LLUUID assetId, LLSD response)
+            {
+                LLAppViewer::instance()->postToMainCoro(
+                    [=]()
+                    {
+                        if (mUploadingAsset)
+                        {
+                            // HACK: save buffer to cache to emulate a successful upload
+                            LLFileSystem cache(assetId, LLAssetType::AT_GLTF, LLFileSystem::WRITE);
+
+                            LL_INFOS("GLTF") << "Uploaded GLTF json: " << assetId << LL_ENDL;
+                            llassert(buffer.size() <= size_t(S32_MAX));
+                            cache.write((const U8 *) buffer.c_str(), S32(buffer.size()));
+
+                            mUploadingAsset = nullptr;
+                        }
+
+                        if (mUploadingObject)
+                        {
+                            mUploadingObject->mGLTFAsset = nullptr;
+                            mUploadingObject->setGLTFAsset(assetId);
+                            mUploadingObject->markForUpdate();
+                            mUploadingObject = nullptr;
+                        }
+
+                        mGLTFUploadPending = false;
+                    });
+            };
+
+#if GLTF_SIM_SUPPORT
+            S32 expected_upload_cost = 1;
+            LLUUID asset_id = LLUUID::generateNewID();
+
+            mGLTFUploadPending = true;
+
+            LLResourceUploadInfo::ptr_t uploadInfo(std::make_shared<LLNewBufferedResourceUploadInfo>(
+                buffer,
+                asset_id,
+                "",
+                "",
+                0,
+                LLFolderType::FT_NONE,
+                LLInventoryType::IT_GLTF,
+                LLAssetType::AT_GLTF,
+                LLFloaterPerms::getNextOwnerPerms("Uploads"),
+                LLFloaterPerms::getGroupPerms("Uploads"),
+                LLFloaterPerms::getEveryonePerms("Uploads"),
+                expected_upload_cost,
+                false,
+                finish,
+                failure));
+
+            upload_new_resource(uploadInfo);
+#else
+            // dummy finish
+            finish(LLUUID::generateNewID(), LLSD());
+#endif
+        }
+    }
+}
 
+void GLTFSceneManager::render(bool opaque, bool rigged, bool unlit)
+{
+    U8 variant = 0;
+    if (rigged)
+    {
+        variant |= LLGLSLShader::GLTFVariant::RIGGED;
+    }
+    if (!opaque)
+    {
+        variant |= LLGLSLShader::GLTFVariant::ALPHA_BLEND;
     }
+    if (unlit)
+    {
+        variant |= LLGLSLShader::GLTFVariant::UNLIT;
+    }
+
+    render(variant);
 }
 
-void GLTFSceneManager::render(bool opaque, bool rigged)
+void GLTFSceneManager::render(U8 variant)
 {
-    // for debugging, just render the whole scene as opaque
-    // by traversing the whole scenegraph
-    // Assumes camera transform is already set and
-    // appropriate shader is already bound
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+    // just render the whole scene by traversing the whole scenegraph
+    // Assumes camera transform is already set and appropriate shader is already bound.
+    // Eventually we'll want a smarter render pipe that has pre-sorted the scene graph
+    // into buckets by material and shader.
+
+    // HACK -- implicitly render multi-uv variant
+    if (!(variant & LLGLSLShader::GLTFVariant::MULTI_UV))
+    {
+        render((U8) (variant | LLGLSLShader::GLTFVariant::MULTI_UV));
+    }
 
-    gGL.matrixMode(LLRender::MM_MODELVIEW);
+    bool rigged = variant & LLGLSLShader::GLTFVariant::RIGGED;
 
     for (U32 i = 0; i < mObjects.size(); ++i)
     {
@@ -151,24 +577,205 @@ void GLTFSceneManager::render(bool opaque, bool rigged)
             continue;
         }
 
-        Asset* asset = mObjects[i]->mGLTFAsset;
-
+        Asset* asset = mObjects[i]->mGLTFAsset.get();
         gGL.pushMatrix();
 
         LLMatrix4a mat = mObjects[i]->getGLTFAssetToAgentTransform();
 
-        LLMatrix4a modelview;
-        modelview.loadu(gGLModelView);
-
-        matMul(mat, modelview, modelview);
+        // provide a modelview matrix that goes from asset to camera space
+        // (matrix palettes are in asset space)
+        gGL.loadMatrix(gGLModelView);
+        gGL.multMatrix(mat.getF32ptr());
 
-        asset->updateRenderTransforms(modelview);
-        asset->render(opaque, rigged);
+        render(*asset, variant);
 
         gGL.popMatrix();
     }
 }
 
+void GLTFSceneManager::render(Asset& asset, U8 variant)
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+
+    for (U32 ds = 0; ds < 2; ++ds)
+    {
+        RenderData& rd = asset.mRenderData[ds];
+        auto& batches = rd.mBatches[variant];
+
+        if (batches.empty())
+        {
+            return;
+        }
+
+        LLGLDisable cull_face(ds == 1 ? GL_CULL_FACE : 0);
+
+        bool opaque = !(variant & LLGLSLShader::GLTFVariant::ALPHA_BLEND);
+        bool rigged = variant & LLGLSLShader::GLTFVariant::RIGGED;
+
+        bool shader_bound = false;
+
+        for (U32 i = 0; i < batches.size(); ++i)
+        {
+            if (batches[i].mPrimitives.empty() || batches[i].mVertexBuffer.isNull())
+            {
+                continue;
+            }
+
+            if (!shader_bound)
+            { // don't bind the shader until we know we have somthing to render
+                if (opaque)
+                {
+                    gGLTFPBRMetallicRoughnessProgram.bind(variant);
+                }
+                else
+                { // alpha shaders need all the shadow map setup etc
+                    gPipeline.bindDeferredShader(gGLTFPBRMetallicRoughnessProgram.mGLTFVariants[variant]);
+                }
+
+                if (!rigged)
+                {
+                    glBindBufferBase(GL_UNIFORM_BUFFER, LLGLSLShader::UB_GLTF_NODES, asset.mNodesUBO);
+                }
+
+                glBindBufferBase(GL_UNIFORM_BUFFER, LLGLSLShader::UB_GLTF_MATERIALS, asset.mMaterialsUBO);
+
+                for (U32 i = 0; i < TEXTURE_TYPE_COUNT; ++i)
+                {
+                    mLastTexture[i] = -2;
+                }
+
+                gGL.syncMatrices();
+                shader_bound = true;
+            }
+
+            {
+                LL_PROFILE_ZONE_NAMED_CATEGORY_GLTF("gltfdc - set vb");
+                batches[i].mVertexBuffer->setBuffer();
+            }
+
+            S32 mat_idx = i - 1;
+            if (mat_idx != INVALID_INDEX)
+            {
+                Material& material = asset.mMaterials[mat_idx];
+                bind(asset, material);
+            }
+            else
+            {
+                LLFetchedGLTFMaterial::sDefault.bind();
+                LLGLSLShader::sCurBoundShaderPtr->uniform1i(LLShaderMgr::GLTF_MATERIAL_ID, -1);
+            }
+
+            for (auto& pdata : batches[i].mPrimitives)
+            {
+                LL_PROFILE_ZONE_NAMED_CATEGORY_GLTF("GLTF draw call");
+                Node& node = asset.mNodes[pdata.mNodeIndex];
+                Mesh& mesh = asset.mMeshes[node.mMesh];
+                Primitive& primitive = mesh.mPrimitives[pdata.mPrimitiveIndex];
+
+                if (rigged)
+                {
+                    LL_PROFILE_ZONE_NAMED_CATEGORY_GLTF("gltfdc - bind skin");
+                    llassert(node.mSkin != INVALID_INDEX);
+                    Skin& skin = asset.mSkins[node.mSkin];
+                    glBindBufferBase(GL_UNIFORM_BUFFER, LLGLSLShader::UB_GLTF_JOINTS, skin.mUBO);
+                }
+                else
+                {
+                    LLGLSLShader::sCurBoundShaderPtr->uniform1i(LLShaderMgr::GLTF_NODE_ID, pdata.mNodeIndex);
+                }
+
+                {
+                    LL_PROFILE_ZONE_NAMED_CATEGORY_GLTF("gltfdc - push vb");
+
+                    primitive.mVertexBuffer->drawRangeFast(primitive.mGLMode, primitive.mVertexOffset, primitive.mVertexOffset + primitive.getVertexCount() - 1, primitive.getIndexCount(), primitive.mIndexOffset);
+                }
+            }
+        }
+    }
+}
+
+void GLTFSceneManager::bindTexture(Asset& asset, TextureType texture_type, TextureInfo& info, LLViewerTexture* fallback)
+{
+    U8 type_idx = (U8)texture_type;
+
+    if (info.mIndex == mLastTexture[type_idx])
+    { //already bound
+        return;
+    }
+
+    S32 uniform[] =
+    {
+        LLShaderMgr::DIFFUSE_MAP,
+        LLShaderMgr::NORMAL_MAP,
+        LLShaderMgr::METALLIC_ROUGHNESS_MAP,
+        LLShaderMgr::OCCLUSION_MAP,
+        LLShaderMgr::EMISSIVE_MAP
+    };
+
+    S32 channel = LLGLSLShader::sCurBoundShaderPtr->getTextureChannel(uniform[(U8)type_idx]);
+
+    if (channel > -1)
+    {
+        glActiveTexture(GL_TEXTURE0 + channel);
+
+        if (info.mIndex != INVALID_INDEX)
+        {
+            Texture& texture = asset.mTextures[info.mIndex];
+
+            LLViewerTexture* tex = asset.mImages[texture.mSource].mTexture;
+            if (tex)
+            {
+                LL_PROFILE_ZONE_NAMED_CATEGORY_GLTF("gl bind texture");
+                glBindTexture(GL_TEXTURE_2D, tex->getTexName());
+
+                if (channel != -1 && texture.mSampler != -1)
+                { // set sampler state
+                    Sampler& sampler = asset.mSamplers[texture.mSampler];
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, sampler.mWrapS);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, sampler.mWrapT);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, sampler.mMagFilter);
+
+                    // NOTE: do not set min filter.  Always respect client preference for min filter
+                }
+                else
+                {
+                    // set default sampler state
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+                }
+            }
+            else
+            {
+                glBindTexture(GL_TEXTURE_2D, fallback->getTexName());
+            }
+        }
+        else
+        {
+            glBindTexture(GL_TEXTURE_2D, fallback->getTexName());
+        }
+    }
+}
+
+
+void GLTFSceneManager::bind(Asset& asset, Material& material)
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_GLTF;
+    LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
+
+    bindTexture(asset, TextureType::BASE_COLOR, material.mPbrMetallicRoughness.mBaseColorTexture, LLViewerFetchedTexture::sWhiteImagep);
+
+    if (!LLPipeline::sShadowRender)
+    {
+        bindTexture(asset, TextureType::NORMAL, material.mNormalTexture, LLViewerFetchedTexture::sFlatNormalImagep);
+        bindTexture(asset, TextureType::METALLIC_ROUGHNESS, material.mPbrMetallicRoughness.mMetallicRoughnessTexture, LLViewerFetchedTexture::sWhiteImagep);
+        bindTexture(asset, TextureType::OCCLUSION, material.mOcclusionTexture, LLViewerFetchedTexture::sWhiteImagep);
+        bindTexture(asset, TextureType::EMISSIVE, material.mEmissiveTexture, LLViewerFetchedTexture::sWhiteImagep);
+    }
+
+    shader->uniform1i(LLShaderMgr::GLTF_MATERIAL_ID, &material - &asset.mMaterials[0]);
+}
+
 LLMatrix4a inverse(const LLMatrix4a& mat)
 {
     glh::matrix4f m((F32*)mat.mMatrix);
@@ -178,7 +785,7 @@ LLMatrix4a inverse(const LLMatrix4a& mat)
     return ret;
 }
 
-bool GLTFSceneManager::lineSegmentIntersect(LLVOVolume* obj, Asset* asset, const LLVector4a& start, const LLVector4a& end, S32 face, BOOL pick_transparent, BOOL pick_rigged, BOOL pick_unselectable, S32* node_hit, S32* primitive_hit,
+bool GLTFSceneManager::lineSegmentIntersect(LLVOVolume* obj, Asset* asset, const LLVector4a& start, const LLVector4a& end, S32 face, bool pick_transparent, bool pick_rigged, bool pick_unselectable, S32* node_hit, S32* primitive_hit,
     LLVector4a* intersection, LLVector2* tex_coord, LLVector4a* normal, LLVector4a* tangent)
 
 {
@@ -272,10 +879,10 @@ bool GLTFSceneManager::lineSegmentIntersect(LLVOVolume* obj, Asset* asset, const
 }
 
 LLDrawable* GLTFSceneManager::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
-    BOOL pick_transparent,
-    BOOL pick_rigged,
-    BOOL pick_unselectable,
-    BOOL pick_reflection_probe,
+    bool pick_transparent,
+    bool pick_rigged,
+    bool pick_unselectable,
+    bool pick_reflection_probe,
     S32* node_hit,                   // return the index of the node that was hit
     S32* primitive_hit,               // return the index of the primitive that was hit
     LLVector4a* intersection,         // return the intersection point
@@ -298,7 +905,7 @@ LLDrawable* GLTFSceneManager::lineSegmentIntersect(const LLVector4a& start, cons
         }
 
         // temporary debug -- always double check objects that have GLTF scenes hanging off of them even if the ray doesn't intersect the object bounds
-        if (lineSegmentIntersect((LLVOVolume*) mObjects[i].get(), mObjects[i]->mGLTFAsset, start, local_end, -1, pick_transparent, pick_rigged, pick_unselectable, node_hit, primitive_hit, &position, tex_coord, normal, tangent))
+        if (lineSegmentIntersect((LLVOVolume*) mObjects[i].get(), mObjects[i]->mGLTFAsset.get(), start, local_end, -1, pick_transparent, pick_rigged, pick_unselectable, node_hit, primitive_hit, &position, tex_coord, normal, tangent))
         {
             local_end = position;
             if (intersection)
@@ -326,16 +933,21 @@ void renderAssetDebug(LLViewerObject* obj, Asset* asset)
     // assumes modelview matrix is already set
 
     gGL.pushMatrix();
-
     // get raycast in asset space
     LLMatrix4a agent_to_asset = obj->getAgentToGLTFAssetTransform();
 
-    LLVector4a start;
-    LLVector4a end;
+    gGL.multMatrix(agent_to_asset.getF32ptr());
+
+    vec4 start;
+    vec4 end;
 
-    agent_to_asset.affineTransform(gDebugRaycastStart, start);
-    agent_to_asset.affineTransform(gDebugRaycastEnd, end);
+    LLVector4a t;
+    agent_to_asset.affineTransform(gDebugRaycastStart, t);
+    start = glm::make_vec4(t.getF32ptr());
+    agent_to_asset.affineTransform(gDebugRaycastEnd, t);
+    end = glm::make_vec4(t.getF32ptr());
 
+    start.w = end.w = 1.0;
 
     for (auto& node : asset->mNodes)
     {
@@ -343,7 +955,8 @@ void renderAssetDebug(LLViewerObject* obj, Asset* asset)
 
         if (node.mMesh != INVALID_INDEX)
         {
-            gGL.loadMatrix((F32*)node.mRenderMatrix.mMatrix);
+            gGL.pushMatrix();
+            gGL.multMatrix((F32*)glm::value_ptr(node.mAssetMatrix));
 
             // draw bounding box of mesh primitives
             if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_BBOXES))
@@ -361,24 +974,24 @@ void renderAssetDebug(LLViewerObject* obj, Asset* asset)
                 }
             }
 
-#if 0
+#if 1
             if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_RAYCAST))
             {
                 gGL.flush();
                 glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
 
                 // convert raycast to node local space
-                LLVector4a local_start;
-                LLVector4a local_end;
-
-                node.mAssetMatrixInv.affineTransform(start, local_start);
-                node.mAssetMatrixInv.affineTransform(end, local_end);
+                vec4 local_start = node.mAssetMatrixInv * start;
+                vec4 local_end = node.mAssetMatrixInv * end;
 
                 for (auto& primitive : mesh.mPrimitives)
                 {
                     if (primitive.mOctree.notNull())
                     {
-                        renderOctreeRaycast(local_start, local_end, primitive.mOctree);
+                        LLVector4a s, e;
+                        s.load3(glm::value_ptr(local_start));
+                        e.load3(glm::value_ptr(local_end));
+                        renderOctreeRaycast(s, e, primitive.mOctree);
                     }
                 }
 
@@ -386,6 +999,7 @@ void renderAssetDebug(LLViewerObject* obj, Asset* asset)
                 glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
             }
 #endif
+            gGL.popMatrix();
         }
     }
 
@@ -404,35 +1018,15 @@ void GLTFSceneManager::renderDebug()
 
     gDebugProgram.bind();
 
+    gGL.pushMatrix();
+    gGL.loadMatrix(gGLModelView);
+
     LLGLDisable cullface(GL_CULL_FACE);
     LLGLEnable blend(GL_BLEND);
     gGL.setSceneBlendType(LLRender::BT_ALPHA);
     gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
     gPipeline.disableLights();
 
-    // force update all mRenderMatrix, not just nodes with meshes
-    for (auto& obj : mObjects)
-    {
-        if (obj->isDead() || obj->mGLTFAsset == nullptr)
-        {
-            continue;
-        }
-
-        LLMatrix4a mat = obj->getGLTFAssetToAgentTransform();
-
-        LLMatrix4a modelview;
-        modelview.loadu(gGLModelView);
-
-        matMul(mat, modelview, modelview);
-
-        Asset* asset = obj->mGLTFAsset;
-
-        for (auto& node : asset->mNodes)
-        {
-            matMul(node.mAssetMatrix, modelview, node.mRenderMatrix);
-        }
-    }
-
     for (auto& obj : mObjects)
     {
         if (obj->isDead() || obj->mGLTFAsset == nullptr)
@@ -440,14 +1034,7 @@ void GLTFSceneManager::renderDebug()
             continue;
         }
 
-        Asset* asset = obj->mGLTFAsset;
-
-        LLMatrix4a mat = obj->getGLTFAssetToAgentTransform();
-
-        LLMatrix4a modelview;
-        modelview.loadu(gGLModelView);
-
-        matMul(mat, modelview, modelview);
+        Asset* asset = obj->mGLTFAsset.get();
 
         renderAssetDebug(obj, asset);
     }
@@ -458,10 +1045,7 @@ void GLTFSceneManager::renderDebug()
         for (U32 i = 0; i < 2; ++i)
         {
             LLGLDepthTest depth(GL_TRUE, i == 0 ? GL_FALSE : GL_TRUE, i == 0 ? GL_GREATER : GL_LEQUAL);
-            LLGLState blend(GL_BLEND, i == 0 ? TRUE : FALSE);
-
-
-            gGL.pushMatrix();
+            LLGLState blend(GL_BLEND, i == 0 ? GL_TRUE : GL_FALSE);
 
             for (auto& obj : mObjects)
             {
@@ -470,21 +1054,16 @@ void GLTFSceneManager::renderDebug()
                     continue;
                 }
 
-                LLMatrix4a mat = obj->getGLTFAssetToAgentTransform();
+                gGL.pushMatrix();
 
-                LLMatrix4a modelview;
-                modelview.loadu(gGLModelView);
+                gGL.multMatrix(obj->getGLTFAssetToAgentTransform().getF32ptr());
 
-                matMul(mat, modelview, modelview);
-
-                Asset* asset = obj->mGLTFAsset;
+                Asset* asset = obj->mGLTFAsset.get();
 
                 for (auto& node : asset->mNodes)
                 {
-                    // force update all mRenderMatrix, not just nodes with meshes
-                    matMul(node.mAssetMatrix, modelview, node.mRenderMatrix);
-
-                    gGL.loadMatrix(node.mRenderMatrix.getF32ptr());
+                    gGL.pushMatrix();
+                    gGL.multMatrix(glm::value_ptr(node.mAssetMatrix));
                     // render x-axis red, y-axis green, z-axis blue
                     gGL.color4f(1.f, 0.f, 0.f, 0.5f);
                     gGL.begin(LLRender::LINES);
@@ -514,16 +1093,18 @@ void GLTFSceneManager::renderDebug()
                     {
                         Node& child = asset->mNodes[child_idx];
                         gGL.vertex3f(0.f, 0.f, 0.f);
-                        gGL.vertex3fv(child.mMatrix.getTranslation().getF32ptr());
+
+
+                        gGL.vertex3fv(glm::value_ptr(child.mMatrix[3]));
                     }
                     gGL.end();
                     gGL.flush();
+                    gGL.popMatrix();
                 }
-            }
 
-            gGL.popMatrix();
+                gGL.popMatrix();
+            }
         }
-
     }
 
 
@@ -533,32 +1114,41 @@ void GLTFSceneManager::renderDebug()
         S32 primitive_hit = -1;
         LLVector4a intersection;
 
-        LLDrawable* drawable = lineSegmentIntersect(gDebugRaycastStart, gDebugRaycastEnd, TRUE, TRUE, TRUE, TRUE, &node_hit, &primitive_hit, &intersection, nullptr, nullptr, nullptr);
+        LLDrawable* drawable = lineSegmentIntersect(gDebugRaycastStart, gDebugRaycastEnd, true, true, true, true, &node_hit, &primitive_hit, &intersection, nullptr, nullptr, nullptr);
 
         if (drawable)
         {
-            gGL.pushMatrix();
-            Asset* asset = drawable->getVObj()->mGLTFAsset;
-            Node* node = &asset->mNodes[node_hit];
-            Primitive* primitive = &asset->mMeshes[node->mMesh].mPrimitives[primitive_hit];
 
-            gGL.flush();
-            glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
-            gGL.color3f(1, 0, 1);
-            drawBoxOutline(intersection, LLVector4a(0.1f, 0.1f, 0.1f, 0.f));
-
-            gGL.loadMatrix((F32*) node->mRenderMatrix.mMatrix);
+            LLViewerObject* obj = drawable->getVObj();
+            if (obj)
+            {
+                gGL.pushMatrix();
+                gGL.multMatrix(obj->getGLTFAssetToAgentTransform().getF32ptr());
+                Asset* asset = obj->mGLTFAsset.get();
+                Node* node = &asset->mNodes[node_hit];
+                Primitive* primitive = &asset->mMeshes[node->mMesh].mPrimitives[primitive_hit];
 
+                gGL.flush();
+                glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+                gGL.color3f(1, 0, 1);
+                drawBoxOutline(intersection, LLVector4a(0.1f, 0.1f, 0.1f, 0.f));
 
+                gGL.multMatrix(glm::value_ptr(node->mAssetMatrix));
 
-            auto* listener = (LLVolumeOctreeListener*) primitive->mOctree->getListener(0);
-            drawBoxOutline(listener->mBounds[0], listener->mBounds[1]);
+                auto* listener = (LLVolumeOctreeListener*)primitive->mOctree->getListener(0);
+                drawBoxOutline(listener->mBounds[0], listener->mBounds[1]);
 
-            gGL.flush();
-            glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
-            gGL.popMatrix();
+                gGL.flush();
+                glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                gGL.popMatrix();
+            }
         }
     }
+
+    gGL.popMatrix();
     gDebugProgram.unbind();
+
 }
 
+
+
diff --git a/indra/newview/gltfscenemanager.h b/indra/newview/gltfscenemanager.h
index 7966606dfa..853bca59d0 100644
--- a/indra/newview/gltfscenemanager.h
+++ b/indra/newview/gltfscenemanager.h
@@ -28,6 +28,10 @@
 
 #include "llsingleton.h"
 #include "llviewerobject.h"
+#include "gltf/common.h"
+
+class LLVOVolume;
+class LLDrawable;
 
 namespace LL
 {
@@ -40,16 +44,30 @@ namespace LL
         void load(); // open filepicker to choose asset
         void load(const std::string& filename); // load asset from filename
 
+        void saveAs(); // open filepicker and choose file to save selected asset to
+        void save(const std::string& filename); // save selected asset to filename (suitable for use in external programs)
+        void uploadSelection(); // decompose selected asset and upload to simulator
+
         void update();
-        void render(bool opaque, bool rigged = false);
+        void render(bool opaque, bool rigged = false, bool unlit = false);
+
+        // render the given variant of all assets
+        // variant - bitmask according to LLGLSLShader::GLTFVariant flags
+        void render(U8 variant);
+
+        void render(LL::GLTF::Asset& asset, U8 variant);
+
+        // bind the given material for rendering
+        void bind(LL::GLTF::Asset& asset, LL::GLTF::Material& material);
+        void bindTexture(LL::GLTF::Asset& asset, LL::GLTF::TextureType texture_type, LL::GLTF::TextureInfo& info, LLViewerTexture* fallback);
         void renderOpaque();
         void renderAlpha();
 
         LLDrawable* lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
-            BOOL pick_transparent,
-            BOOL pick_rigged,
-            BOOL pick_unselectable,
-            BOOL pick_reflection_probe,
+            bool pick_transparent,
+            bool pick_rigged,
+            bool pick_unselectable,
+            bool pick_reflection_probe,
             S32* node_hit,                   // return the index of the node that was hit
             S32* primitive_hit,              // return the index of the primitive that was hit
             LLVector4a* intersection,         // return the intersection point
@@ -57,12 +75,30 @@ namespace LL
             LLVector4a* normal,               // return the surface normal at the intersection point
             LLVector4a* tangent);           // return the surface tangent at the intersection point
 
-        bool lineSegmentIntersect(LLVOVolume* obj, GLTF::Asset* asset, const LLVector4a& start, const LLVector4a& end, S32 face, BOOL pick_transparent, BOOL pick_rigged, BOOL pick_unselectable, S32* face_hitp, S32* primitive_hitp,
+        bool lineSegmentIntersect(LLVOVolume* obj, LL::GLTF::Asset* asset, const LLVector4a& start, const LLVector4a& end, S32 face, bool pick_transparent, bool pick_rigged, bool pick_unselectable, S32* face_hitp, S32* primitive_hitp,
             LLVector4a* intersection, LLVector2* tex_coord, LLVector4a* normal, LLVector4a* tangent);
 
         void renderDebug();
 
+        void addGLTFObject(LLViewerObject* object, LLUUID gltf_id);
+        static void onGLTFLoadComplete(const LLUUID& id, LLAssetType::EType asset_type, void* user_data, S32 status, LLExtStat ext_status);
+        static void onGLTFBinLoadComplete(const LLUUID& id, LLAssetType::EType asset_type, void* user_data, S32 status, LLExtStat ext_status);
+
         std::vector<LLPointer<LLViewerObject>> mObjects;
+
+        std::shared_ptr<GLTF::Asset> mUploadingAsset;
+        bool mGLTFUploadPending = false;
+        LLPointer<LLViewerObject> mUploadingObject;
+        U32 mPendingImageUploads = 0;
+        U32 mPendingBinaryUploads = 0;
+        U32 mPendingGLTFUploads = 0;
+
+        U32 mJointUBO = 0;
+
+
+        // render loop state
+        S32 mLastTexture[GLTF::TEXTURE_TYPE_COUNT] = { -2, -2, -2, -2, -2 };
+
     };
 }
 
diff --git a/indra/newview/installers/darwin/apple-notarize.sh b/indra/newview/installers/darwin/apple-notarize.sh
index d90772ec0e..cc4435e614 100755
--- a/indra/newview/installers/darwin/apple-notarize.sh
+++ b/indra/newview/installers/darwin/apple-notarize.sh
@@ -17,7 +17,7 @@ if [[ -f "$CONFIG_FILE" ]]; then
                                    --asc-provider $ASC_PROVIDER \
                                    --file "$zip_file" 2>&1)
         echo $res
-        
+
         requestUUID=$(echo $res | awk '/RequestUUID/ { print $NF; }')
         if [[ -n $requestUUID ]]; then
             in_progress=1
@@ -26,7 +26,7 @@ if [[ -f "$CONFIG_FILE" ]]; then
                 res=$(xcrun altool --notarization-info "$requestUUID" \
                                             --username $USERNAME \
                                             --password $PASSWORD 2>&1)
-                if [[ $res != *"in progress"* ]]; then 
+                if [[ $res != *"in progress"* ]]; then
                     in_progress=0
                 fi
                 echo "."
diff --git a/indra/newview/installers/darwin/fix_application_icon_position.sh b/indra/newview/installers/darwin/fix_application_icon_position.sh
index 62abcdd07e..841defe96c 100755
--- a/indra/newview/installers/darwin/fix_application_icon_position.sh
+++ b/indra/newview/installers/darwin/fix_application_icon_position.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-# just run this script each time after you change the installer's name to fix the icon misalignment 
+# just run this script each time after you change the installer's name to fix the icon misalignment
 mydir="$(dirname "$0")"
 # If there's more than one DMG in more than one build directory, pick the most
 # recent one.
diff --git a/indra/newview/installers/windows/FILES_ARE_UNICODE_UTF-16LE.txt b/indra/newview/installers/windows/FILES_ARE_UNICODE_UTF-16LE.txt
index 185c0180fb..30f9349111 100644
--- a/indra/newview/installers/windows/FILES_ARE_UNICODE_UTF-16LE.txt
+++ b/indra/newview/installers/windows/FILES_ARE_UNICODE_UTF-16LE.txt
@@ -1,6 +1,6 @@
-The language files in this directory are Unicode (Little-Endian) format, also known as UTF-16 LE.

-

-This is the format required for NSIS Unicode.  See http://www.scratchpaper.com/ for details.

-

-James Cook

-September 2008

+The language files in this directory are Unicode (Little-Endian) format, also known as UTF-16 LE.
+
+This is the format required for NSIS Unicode.  See http://www.scratchpaper.com/ for details.
+
+James Cook
+September 2008
diff --git a/indra/newview/linux_tools/register_secondlifeprotocol.sh b/indra/newview/linux_tools/register_secondlifeprotocol.sh
index 16e73cb854..33c34d7a76 100755
--- a/indra/newview/linux_tools/register_secondlifeprotocol.sh
+++ b/indra/newview/linux_tools/register_secondlifeprotocol.sh
@@ -27,7 +27,7 @@ for LLKDECONFIG in kde-config kde4-config; do
         LLKDEPROTODIR=`$LLKDECONFIG --path services | cut -d ':' -f 1`
         if [ -d "$LLKDEPROTODIR" ]; then
             LLKDEPROTOFILE=${LLKDEPROTODIR}/secondlife.protocol
-            cat > ${LLKDEPROTOFILE} <<EOF || echo Warning: Did not register secondlife:// handler with KDE: Could not write ${LLKDEPROTOFILE} 
+            cat > ${LLKDEPROTOFILE} <<EOF || echo Warning: Did not register secondlife:// handler with KDE: Could not write ${LLKDEPROTOFILE}
 [Protocol]
 exec=${HANDLER} '%u'
 protocol=secondlife
diff --git a/indra/newview/llagent.cpp b/indra/newview/llagent.cpp
index 68136c8396..2f5b0f04e3 100644
--- a/indra/newview/llagent.cpp
+++ b/indra/newview/llagent.cpp
@@ -102,7 +102,7 @@ using namespace LLAvatarAppearanceDefines;
 
 extern LLMenuBarGL* gMenuBarView;
 
-const BOOL ANIMATE = TRUE;
+const bool ANIMATE = true;
 const U8 AGENT_STATE_TYPING =   0x04;
 const U8 AGENT_STATE_EDITING =  0x10;
 
@@ -186,7 +186,7 @@ private:
 class LLTeleportRequestViaLure : public LLTeleportRequestViaLandmark
 {
 public:
-    LLTeleportRequestViaLure(const LLUUID &pLureId, BOOL pIsLureGodLike);
+    LLTeleportRequestViaLure(const LLUUID &pLureId, bool pIsLureGodLike);
     virtual ~LLTeleportRequestViaLure();
 
     virtual void toOstream(std::ostream& os) const;
@@ -196,10 +196,10 @@ public:
     virtual void startTeleport();
 
 protected:
-    inline BOOL isLureGodLike() const {return mIsLureGodLike;};
+    inline bool isLureGodLike() const {return mIsLureGodLike;};
 
 private:
-    BOOL mIsLureGodLike;
+    bool mIsLureGodLike;
 };
 
 class LLTeleportRequestViaLocation : public LLTeleportRequest
@@ -372,7 +372,7 @@ bool LLAgent::isMicrophoneOn(const LLSD& sdname)
 //-----------------------------------------------------------------------------
 LLAgent::LLAgent() :
     mGroupPowers(0),
-    mHideGroupTitle(FALSE),
+    mHideGroupTitle(false),
     mGroupID(),
 
     mInitialized(false),
@@ -404,7 +404,7 @@ LLAgent::LLAgent() :
     mHttpPolicy(LLCore::HttpRequest::DEFAULT_POLICY_ID),
     mTeleportState(TELEPORT_NONE),
     mRegionp(NULL),
-    mInterestListMode(LLViewerRegion::IL_MODE_DEFAULT),
+    mInterestListMode(IL_MODE_DEFAULT),
 
     mAgentOriginGlobal(),
     mPositionGlobal(),
@@ -416,24 +416,24 @@ LLAgent::LLAgent() :
     mRenderState(0),
     mTypingTimer(),
 
-    mViewsPushed(FALSE),
+    mViewsPushed(false),
 
-    mCustomAnim(FALSE),
-    mShowAvatar(TRUE),
+    mCustomAnim(false),
+    mShowAvatar(true),
     mFrameAgent(),
 
     mIsDoNotDisturb(false),
 
     mControlFlags(0x00000000),
-    mbFlagsDirty(FALSE),
-    mbFlagsNeedReset(FALSE),
+    mbFlagsDirty(false),
+    mbFlagsNeedReset(false),
 
-    mAutoPilot(FALSE),
-    mAutoPilotFlyOnStop(FALSE),
-    mAutoPilotAllowFlying(TRUE),
+    mAutoPilot(false),
+    mAutoPilotFlyOnStop(false),
+    mAutoPilotAllowFlying(true),
     mAutoPilotTargetGlobal(),
     mAutoPilotStopDistance(1.f),
-    mAutoPilotUseRotation(FALSE),
+    mAutoPilotUseRotation(false),
     mAutoPilotTargetFacing(LLVector3::zero),
     mAutoPilotTargetDist(0.f),
     mAutoPilotNoProgressFrameCount(0),
@@ -441,18 +441,18 @@ LLAgent::LLAgent() :
     mAutoPilotFinishedCallback(NULL),
     mAutoPilotCallbackData(NULL),
 
-    mMovementKeysLocked(FALSE),
+    mMovementKeysLocked(false),
 
     mEffectColor(new LLUIColor(LLColor4(0.f, 1.f, 1.f, 1.f))),
 
-    mHaveHomePosition(FALSE),
+    mHaveHomePosition(false),
     mHomeRegionHandle( 0 ),
     mNearChatRadius(CHAT_NORMAL_RADIUS / 2.f),
 
     mNextFidgetTime(0.f),
     mCurrentFidget(0),
     mFirstLogin(false),
-    mOutfitChosen(FALSE),
+    mOutfitChosen(false),
 
     mVoiceConnected(false),
 
@@ -480,7 +480,7 @@ void LLAgent::init()
 {
     mMoveTimer.start();
 
-    gSavedSettings.declareBOOL("SlowMotionAnimation", FALSE, "Declared in code", LLControlVariable::PERSIST_NO);
+    gSavedSettings.declareBOOL("SlowMotionAnimation", false, "Declared in code", LLControlVariable::PERSIST_NO);
     gSavedSettings.getControl("SlowMotionAnimation")->getSignal()->connect(boost::bind(&handleSlowMotionAnimation, _2));
 
     // *Note: this is where LLViewerCamera::getInstance() used to be constructed.
@@ -846,26 +846,26 @@ void LLAgent::movePitch(F32 mag)
 
 
 // Does this parcel allow you to fly?
-BOOL LLAgent::canFly()
+bool LLAgent::canFly()
 {
-    if (isGodlike()) return TRUE;
+    if (isGodlike()) return true;
 
     LLViewerRegion* regionp = getRegion();
-    if (regionp && regionp->getBlockFly()) return FALSE;
+    if (regionp && regionp->getBlockFly()) return false;
 
     LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
-    if (!parcel) return FALSE;
+    if (!parcel) return false;
 
     // Allow owners to fly on their own land.
     if (LLViewerParcelMgr::isParcelOwnedByAgent(parcel, GP_LAND_ALLOW_FLY))
     {
-        return TRUE;
+        return true;
     }
 
     return parcel->getAllowFly();
 }
 
-BOOL LLAgent::getFlying() const
+bool LLAgent::getFlying() const
 {
     return mControlFlags & AGENT_CONTROL_FLY;
 }
@@ -873,7 +873,7 @@ BOOL LLAgent::getFlying() const
 //-----------------------------------------------------------------------------
 // setFlying()
 //-----------------------------------------------------------------------------
-void LLAgent::setFlying(BOOL fly, BOOL fail_sound)
+void LLAgent::setFlying(bool fly, bool fail_sound)
 {
     if (isAgentAvatarValid())
     {
@@ -896,7 +896,7 @@ void LLAgent::setFlying(BOOL fly, BOOL fail_sound)
 
     if (fly)
     {
-        BOOL was_flying = getFlying();
+        bool was_flying = getFlying();
         if (!canFly() && !was_flying)
         {
             // parcel doesn't let you start fly
@@ -923,7 +923,7 @@ void LLAgent::setFlying(BOOL fly, BOOL fail_sound)
     // Update Movement Controls according to Fly mode
     LLFloaterMove::setFlyingMode(fly);
 
-    mbFlagsDirty = TRUE;
+    mbFlagsDirty = true;
 }
 
 
@@ -939,7 +939,7 @@ void LLAgent::toggleFlying()
         LLToolPie::instance().stopClickToWalk();
     }
 
-    BOOL fly = !gAgent.getFlying();
+    bool fly = !gAgent.getFlying();
 
     gAgent.mMoveTimer.reset();
     LLFirstUse::notMoving(false);
@@ -951,7 +951,7 @@ void LLAgent::toggleFlying()
 // static
 bool LLAgent::enableFlying()
 {
-    BOOL sitting = FALSE;
+    bool sitting = false;
     if (isAgentAvatarValid())
     {
         sitting = gAgentAvatarp->isSitting();
@@ -962,7 +962,7 @@ bool LLAgent::enableFlying()
 // static
 bool LLAgent::isSitting()
 {
-    BOOL sitting = FALSE;
+    bool sitting = false;
     if (isAgentAvatarValid())
     {
         sitting = gAgentAvatarp->isSitting();
@@ -998,9 +998,9 @@ void LLAgent::capabilityReceivedCallback(const LLUUID &region_id, LLViewerRegion
             LLAppViewer::instance()->updateNameLookupUrl(regionp);
         }
 
-        if (gAgent.getInterestListMode() == LLViewerRegion::IL_MODE_360)
+        if (gAgent.getInterestListMode() == IL_MODE_360)
         {
-            gAgent.changeInterestListMode(LLViewerRegion::IL_MODE_360);
+            gAgent.changeInterestListMode(IL_MODE_360);
         }
     }
 }
@@ -1147,7 +1147,7 @@ void LLAgent::removeRegionChangedCallback(boost::signals2::connection callback)
 //-----------------------------------------------------------------------------
 // inPrelude()
 //-----------------------------------------------------------------------------
-BOOL LLAgent::inPrelude()
+bool LLAgent::inPrelude()
 {
     return mRegionp && mRegionp->isPrelude();
 }
@@ -1166,7 +1166,7 @@ std::string LLAgent::getRegionCapability(const std::string &name)
 // canManageEstate()
 //-----------------------------------------------------------------------------
 
-BOOL LLAgent::canManageEstate() const
+bool LLAgent::canManageEstate() const
 {
     return mRegionp && mRegionp->canManageEstate();
 }
@@ -1312,7 +1312,7 @@ boost::signals2::connection LLAgent::whenPositionChanged(position_signal_t::slot
 //-----------------------------------------------------------------------------
 S32 LLAgent::getRegionsVisited() const
 {
-    return mRegionsVisited.size();
+    return static_cast<S32>(mRegionsVisited.size());
 }
 
 //-----------------------------------------------------------------------------
@@ -1542,7 +1542,7 @@ U32 LLAgent::getControlFlags()
 void LLAgent::setControlFlags(U32 mask)
 {
     mControlFlags |= mask;
-    mbFlagsDirty = TRUE;
+    mbFlagsDirty = true;
 }
 
 
@@ -1555,14 +1555,14 @@ void LLAgent::clearControlFlags(U32 mask)
     mControlFlags &= ~mask;
     if (old_flags != mControlFlags)
     {
-        mbFlagsDirty = TRUE;
+        mbFlagsDirty = true;
     }
 }
 
 //-----------------------------------------------------------------------------
 // controlFlagsDirty()
 //-----------------------------------------------------------------------------
-BOOL LLAgent::controlFlagsDirty() const
+bool LLAgent::controlFlagsDirty() const
 {
     return mbFlagsDirty;
 }
@@ -1572,7 +1572,7 @@ BOOL LLAgent::controlFlagsDirty() const
 //-----------------------------------------------------------------------------
 void LLAgent::enableControlFlagReset()
 {
-    mbFlagsNeedReset = TRUE;
+    mbFlagsNeedReset = true;
 }
 
 //-----------------------------------------------------------------------------
@@ -1582,8 +1582,8 @@ void LLAgent::resetControlFlags()
 {
     if (mbFlagsNeedReset)
     {
-        mbFlagsNeedReset = FALSE;
-        mbFlagsDirty = FALSE;
+        mbFlagsNeedReset = false;
+        mbFlagsDirty = false;
         // reset all of the ephemeral flags
         // some flags are managed elsewhere
         mControlFlags &= AGENT_CONTROL_AWAY | AGENT_CONTROL_FLY | AGENT_CONTROL_MOUSELOOK;
@@ -1630,7 +1630,7 @@ void LLAgent::clearAFK()
 //-----------------------------------------------------------------------------
 // getAFK()
 //-----------------------------------------------------------------------------
-BOOL LLAgent::getAFK() const
+bool LLAgent::getAFK() const
 {
     return (mControlFlags & AGENT_CONTROL_AWAY) != 0;
 }
@@ -1667,11 +1667,11 @@ void LLAgent::startAutoPilotGlobal(
     const LLVector3d &target_global,
     const std::string& behavior_name,
     const LLQuaternion *target_rotation,
-    void (*finish_callback)(BOOL, void *),
+    void (*finish_callback)(bool, void *),
     void *callback_data,
     F32 stop_distance,
     F32 rot_threshold,
-    BOOL allow_flying)
+    bool allow_flying)
 {
     if (!isAgentAvatarValid())
     {
@@ -1728,38 +1728,38 @@ void LLAgent::startAutoPilotGlobal(
     }
     else
     {
-        mAutoPilotFlyOnStop = FALSE;
+        mAutoPilotFlyOnStop = false;
     }
 
     if (distance > 30.0 && mAutoPilotAllowFlying)
     {
-        setFlying(TRUE);
+        setFlying(true);
     }
 
     if ( distance > 1.f &&
         mAutoPilotAllowFlying &&
         heightDelta > (sqrtf(mAutoPilotStopDistance) + 1.f))
     {
-        setFlying(TRUE);
+        setFlying(true);
         // Do not force flying for "Sit" behavior to prevent flying after pressing "Stand"
         // from an object. See EXT-1655.
         if ("Sit" != mAutoPilotBehaviorName)
-            mAutoPilotFlyOnStop = TRUE;
+            mAutoPilotFlyOnStop = true;
     }
 
-    mAutoPilot = TRUE;
+    mAutoPilot = true;
     setAutoPilotTargetGlobal(target_global);
 
     if (target_rotation)
     {
-        mAutoPilotUseRotation = TRUE;
+        mAutoPilotUseRotation = true;
         mAutoPilotTargetFacing = LLVector3::x_axis * *target_rotation;
         mAutoPilotTargetFacing.mV[VZ] = 0.f;
         mAutoPilotTargetFacing.normalize();
     }
     else
     {
-        mAutoPilotUseRotation = FALSE;
+        mAutoPilotUseRotation = false;
     }
 
     mAutoPilotNoProgressFrameCount = 0;
@@ -1797,7 +1797,7 @@ void LLAgent::setAutoPilotTargetGlobal(const LLVector3d &target_global)
 //-----------------------------------------------------------------------------
 // startFollowPilot()
 //-----------------------------------------------------------------------------
-void LLAgent::startFollowPilot(const LLUUID &leader_id, BOOL allow_flying, F32 stop_distance)
+void LLAgent::startFollowPilot(const LLUUID &leader_id, bool allow_flying, F32 stop_distance)
 {
     mLeaderID = leader_id;
     if ( mLeaderID.isNull() ) return;
@@ -1823,11 +1823,11 @@ void LLAgent::startFollowPilot(const LLUUID &leader_id, BOOL allow_flying, F32 s
 //-----------------------------------------------------------------------------
 // stopAutoPilot()
 //-----------------------------------------------------------------------------
-void LLAgent::stopAutoPilot(BOOL user_cancel)
+void LLAgent::stopAutoPilot(bool user_cancel)
 {
     if (mAutoPilot)
     {
-        mAutoPilot = FALSE;
+        mAutoPilot = false;
         if (mAutoPilotUseRotation && !user_cancel)
         {
             resetAxes(mAutoPilotTargetFacing);
@@ -1885,7 +1885,7 @@ void LLAgent::autoPilot(F32 *delta_yaw)
 
         if (gAgentAvatarp->mInAir && mAutoPilotAllowFlying)
         {
-            setFlying(TRUE);
+            setFlying(true);
         }
 
         LLVector3 at;
@@ -2080,7 +2080,7 @@ void LLAgent::propagate(const F32 dt)
     // handle auto-land behavior
     if (isAgentAvatarValid())
     {
-        BOOL in_air = gAgentAvatarp->mInAir;
+        bool in_air = gAgentAvatarp->mInAir;
         LLVector3 land_vel = getVelocity();
         land_vel.mV[VZ] = 0.f;
 
@@ -2090,7 +2090,7 @@ void LLAgent::propagate(const F32 dt)
             && gSavedSettings.getBOOL("AutomaticFly"))
         {
             // land automatically
-            setFlying(FALSE);
+            setFlying(false);
         }
     }
 
@@ -2154,23 +2154,23 @@ std::ostream& operator<<(std::ostream &s, const LLAgent &agent)
     return s;
 }
 
-// TRUE if your own avatar needs to be rendered.  Usually only
+// true if your own avatar needs to be rendered.  Usually only
 // in third person and build.
 //-----------------------------------------------------------------------------
 // needsRenderAvatar()
 //-----------------------------------------------------------------------------
-BOOL LLAgent::needsRenderAvatar()
+bool LLAgent::needsRenderAvatar()
 {
     if (gAgentCamera.cameraMouselook() && !LLVOAvatar::sVisibleInFirstPerson)
     {
-        return FALSE;
+        return false;
     }
 
     return mShowAvatar && mOutfitChosen;
 }
 
-// TRUE if we need to render your own avatar's head.
-BOOL LLAgent::needsRenderHead()
+// true if we need to render your own avatar's head.
+bool LLAgent::needsRenderHead()
 {
     return (LLVOAvatar::sVisibleInFirstPerson && LLPipeline::sReflectionRender) || (mShowAvatar && !gAgentCamera.cameraMouselook());
 }
@@ -2203,7 +2203,7 @@ void LLAgent::startTyping()
         sendAnimationRequest(ANIM_AGENT_TYPE, ANIM_REQUEST_START);
     }
     (LLFloaterReg::getTypedInstance<LLFloaterIMNearbyChat>("nearby_chat"))->
-            sendChatFromViewer("", CHAT_TYPE_START, FALSE);
+            sendChatFromViewer("", CHAT_TYPE_START, false);
 }
 
 //-----------------------------------------------------------------------------
@@ -2216,7 +2216,7 @@ void LLAgent::stopTyping()
         clearRenderState(AGENT_STATE_TYPING);
         sendAnimationRequest(ANIM_AGENT_TYPE, ANIM_REQUEST_STOP);
         (LLFloaterReg::getTypedInstance<LLFloaterIMNearbyChat>("nearby_chat"))->
-                sendChatFromViewer("", CHAT_TYPE_STOP, FALSE);
+                sendChatFromViewer("", CHAT_TYPE_STOP, false);
     }
 }
 
@@ -2291,19 +2291,19 @@ void LLAgent::endAnimationUpdateUI()
         // show mouse cursor
         gViewerWindow->showCursor();
         // show menus
-        gMenuBarView->setVisible(TRUE);
-        LLNavigationBar::getInstance()->setVisible(TRUE && gSavedSettings.getBOOL("ShowNavbarNavigationPanel"));
+        gMenuBarView->setVisible(true);
+        LLNavigationBar::getInstance()->setVisible(true && gSavedSettings.getBOOL("ShowNavbarNavigationPanel"));
         gStatusBar->setVisibleForMouselook(true);
 
         static LLCachedControl<bool> show_mini_location_panel(gSavedSettings, "ShowMiniLocationPanel");
         if (show_mini_location_panel)
         {
-            LLPanelTopInfoBar::getInstance()->setVisible(TRUE);
+            LLPanelTopInfoBar::getInstance()->setVisible(true);
         }
 
-        LLChicletBar::getInstance()->setVisible(TRUE);
+        LLChicletBar::getInstance()->setVisible(true);
 
-        LLPanelStandStopFlying::getInstance()->setVisible(TRUE);
+        LLPanelStandStopFlying::getInstance()->setVisible(true);
 
         LLToolMgr::getInstance()->setCurrentToolset(gBasicToolset);
 
@@ -2315,7 +2315,7 @@ void LLAgent::endAnimationUpdateUI()
         }
 
         // Only pop if we have pushed...
-        if (TRUE == mViewsPushed)
+        if (true == mViewsPushed)
         {
 #if 0 // Use this once all floaters are registered
             LLFloaterReg::restoreVisibleInstances();
@@ -2340,14 +2340,14 @@ void LLAgent::endAnimationUpdateUI()
 
             gFloaterView->popVisibleAll(skip_list);
 #endif
-            mViewsPushed = FALSE;
+            mViewsPushed = false;
         }
 
 
         gAgentCamera.setLookAt(LOOKAT_TARGET_CLEAR);
         if( gMorphView )
         {
-            gMorphView->setVisible( FALSE );
+            gMorphView->setVisible( false );
         }
 
         // Disable mouselook-specific animations
@@ -2386,7 +2386,7 @@ void LLAgent::endAnimationUpdateUI()
 
         if( gMorphView )
         {
-            gMorphView->setVisible( FALSE );
+            gMorphView->setVisible( false );
         }
 
         if (isAgentAvatarValid())
@@ -2396,7 +2396,7 @@ void LLAgent::endAnimationUpdateUI()
                 sendAnimationRequest(ANIM_AGENT_CUSTOMIZE, ANIM_REQUEST_STOP);
                 sendAnimationRequest(ANIM_AGENT_CUSTOMIZE_DONE, ANIM_REQUEST_START);
 
-                mCustomAnim = FALSE ;
+                mCustomAnim = false ;
             }
 
         }
@@ -2412,19 +2412,19 @@ void LLAgent::endAnimationUpdateUI()
     {
         // clean up UI
         // first show anything hidden by UI toggle
-        gViewerWindow->setUIVisibility(TRUE);
+        gViewerWindow->setUIVisibility(true);
 
         // then hide stuff we want hidden for mouselook
         gToolBarView->setToolBarsVisible(false);
-        gMenuBarView->setVisible(FALSE);
-        LLNavigationBar::getInstance()->setVisible(FALSE);
+        gMenuBarView->setVisible(false);
+        LLNavigationBar::getInstance()->setVisible(false);
         gStatusBar->setVisibleForMouselook(false);
 
-        LLPanelTopInfoBar::getInstance()->setVisible(FALSE);
+        LLPanelTopInfoBar::getInstance()->setVisible(false);
 
-        LLChicletBar::getInstance()->setVisible(FALSE);
+        LLChicletBar::getInstance()->setVisible(false);
 
-        LLPanelStandStopFlying::getInstance()->setVisible(FALSE);
+        LLPanelStandStopFlying::getInstance()->setVisible(false);
 
         // clear out camera lag effect
         gAgentCamera.clearCameraLag();
@@ -2434,7 +2434,7 @@ void LLAgent::endAnimationUpdateUI()
 
         LLToolMgr::getInstance()->setCurrentToolset(gMouselookToolset);
 
-        mViewsPushed = TRUE;
+        mViewsPushed = true;
 
         if (mMouselookModeInSignal)
         {
@@ -2451,15 +2451,15 @@ void LLAgent::endAnimationUpdateUI()
         LLFloaterView::skip_list_t skip_list;
         skip_list.insert(LLFloaterReg::findInstance("mini_map"));
         skip_list.insert(LLFloaterReg::findInstance("beacons"));
-        gFloaterView->pushVisibleAll(FALSE, skip_list);
+        gFloaterView->pushVisibleAll(false, skip_list);
 #endif
 
         if( gMorphView )
         {
-            gMorphView->setVisible(FALSE);
+            gMorphView->setVisible(false);
         }
 
-        gConsole->setVisible( TRUE );
+        gConsole->setVisible( true );
 
         if (isAgentAvatarValid())
         {
@@ -2508,7 +2508,7 @@ void LLAgent::endAnimationUpdateUI()
 
         if( gMorphView )
         {
-            gMorphView->setVisible( TRUE );
+            gMorphView->setVisible( true );
         }
 
         // freeze avatar
@@ -3061,7 +3061,7 @@ bool LLAgent::requestGetCapability(const std::string &capName, httpCallback_t cb
     return false;
 }
 
-BOOL LLAgent::getAdminOverride() const
+bool LLAgent::getAdminOverride() const
 {
     return mAgentAccess->getAdminOverride();
 }
@@ -3071,7 +3071,7 @@ void LLAgent::setMaturity(char text)
     mAgentAccess->setMaturity(text);
 }
 
-void LLAgent::setAdminOverride(BOOL b)
+void LLAgent::setAdminOverride(bool b)
 {
     mAgentAccess->setAdminOverride(b);
 }
@@ -3123,43 +3123,43 @@ void LLAgent::buildFullnameAndTitle(std::string& name) const
     }
 }
 
-BOOL LLAgent::isInGroup(const LLUUID& group_id, BOOL ignore_god_mode /* FALSE */) const
+bool LLAgent::isInGroup(const LLUUID& group_id, bool ignore_god_mode /* false */) const
 {
     if (!ignore_god_mode && isGodlike())
         return true;
 
-    U32 count = mGroups.size();
-    for(U32 i = 0; i < count; ++i)
+    auto count = mGroups.size();
+    for(size_t i = 0; i < count; ++i)
     {
         if(mGroups[i].mID == group_id)
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 // This implementation should mirror LLAgentInfo::hasPowerInGroup
-BOOL LLAgent::hasPowerInGroup(const LLUUID& group_id, U64 power) const
+bool LLAgent::hasPowerInGroup(const LLUUID& group_id, U64 power) const
 {
     if (isGodlikeWithoutAdminMenuFakery())
         return true;
 
     // GP_NO_POWERS can also mean no power is enough to grant an ability.
-    if (GP_NO_POWERS == power) return FALSE;
+    if (GP_NO_POWERS == power) return false;
 
-    U32 count = mGroups.size();
-    for(U32 i = 0; i < count; ++i)
+    auto count = mGroups.size();
+    for(size_t i = 0; i < count; ++i)
     {
         if(mGroups[i].mID == group_id)
         {
-            return (BOOL)((mGroups[i].mPowers & power) > 0);
+            return (bool)((mGroups[i].mPowers & power) > 0);
         }
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLAgent::hasPowerInActiveGroup(U64 power) const
+bool LLAgent::hasPowerInActiveGroup(U64 power) const
 {
     return (mGroupID.notNull() && (hasPowerInGroup(mGroupID, power)));
 }
@@ -3169,8 +3169,8 @@ U64 LLAgent::getPowerInGroup(const LLUUID& group_id) const
     if (isGodlike())
         return GP_ALL_POWERS;
 
-    U32 count = mGroups.size();
-    for(U32 i = 0; i < count; ++i)
+    auto count = mGroups.size();
+    for(size_t i = 0; i < count; ++i)
     {
         if(mGroups[i].mID == group_id)
         {
@@ -3181,24 +3181,24 @@ U64 LLAgent::getPowerInGroup(const LLUUID& group_id) const
     return GP_NO_POWERS;
 }
 
-BOOL LLAgent::getGroupData(const LLUUID& group_id, LLGroupData& data) const
+bool LLAgent::getGroupData(const LLUUID& group_id, LLGroupData& data) const
 {
-    S32 count = mGroups.size();
-    for(S32 i = 0; i < count; ++i)
+    auto count = mGroups.size();
+    for(size_t i = 0; i < count; ++i)
     {
         if(mGroups[i].mID == group_id)
         {
             data = mGroups[i];
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 S32 LLAgent::getGroupContribution(const LLUUID& group_id) const
 {
-    S32 count = mGroups.size();
-    for(S32 i = 0; i < count; ++i)
+    auto count = mGroups.size();
+    for(size_t i = 0; i < count; ++i)
     {
         if(mGroups[i].mID == group_id)
         {
@@ -3209,10 +3209,10 @@ S32 LLAgent::getGroupContribution(const LLUUID& group_id) const
     return 0;
 }
 
-BOOL LLAgent::setGroupContribution(const LLUUID& group_id, S32 contribution)
+bool LLAgent::setGroupContribution(const LLUUID& group_id, S32 contribution)
 {
-    S32 count = mGroups.size();
-    for(S32 i = 0; i < count; ++i)
+    auto count = mGroups.size();
+    for(size_t i = 0; i < count; ++i)
     {
         if(mGroups[i].mID == group_id)
         {
@@ -3226,16 +3226,16 @@ BOOL LLAgent::setGroupContribution(const LLUUID& group_id, S32 contribution)
             msg->addUUID("GroupID", group_id);
             msg->addS32("Contribution", contribution);
             sendReliableMessage();
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLAgent::setUserGroupFlags(const LLUUID& group_id, BOOL accept_notices, BOOL list_in_profile)
+bool LLAgent::setUserGroupFlags(const LLUUID& group_id, bool accept_notices, bool list_in_profile)
 {
-    S32 count = mGroups.size();
-    for(S32 i = 0; i < count; ++i)
+    auto count = mGroups.size();
+    for(size_t i = 0; i < count; ++i)
     {
         if(mGroups[i].mID == group_id)
         {
@@ -3252,13 +3252,13 @@ BOOL LLAgent::setUserGroupFlags(const LLUUID& group_id, BOOL accept_notices, BOO
             msg->nextBlock("NewData");
             msg->addBOOL("ListInProfile", list_in_profile);
             sendReliableMessage();
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLAgent::canJoinGroups() const
+bool LLAgent::canJoinGroups() const
 {
     return (S32)mGroups.size() < LLAgentBenefitsMgr::current().getGroupMembershipLimit();
 }
@@ -3304,16 +3304,15 @@ void LLAgent::sendAnimationRequests(const std::vector<LLUUID> &anim_ids, EAnimRe
     msg->addUUIDFast(_PREHASH_AgentID, getID());
     msg->addUUIDFast(_PREHASH_SessionID, getSessionID());
 
-    for (S32 i = 0; i < anim_ids.size(); i++)
+    for (const LLUUID& uuid : anim_ids)
     {
-        if (anim_ids[i].isNull())
+        if (uuid.notNull())
         {
-            continue;
+            msg->nextBlockFast(_PREHASH_AnimationList);
+            msg->addUUIDFast(_PREHASH_AnimID, uuid);
+            msg->addBOOLFast(_PREHASH_StartAnim, request == ANIM_REQUEST_START);
+            num_valid_anims++;
         }
-        msg->nextBlockFast(_PREHASH_AnimationList);
-        msg->addUUIDFast(_PREHASH_AnimID, (anim_ids[i]) );
-        msg->addBOOLFast(_PREHASH_StartAnim, (request == ANIM_REQUEST_START) ? TRUE : FALSE);
-        num_valid_anims++;
     }
 
     msg->nextBlockFast(_PREHASH_PhysicalAvatarEventList);
@@ -3338,8 +3337,8 @@ void LLAgent::sendAnimationRequest(const LLUUID &anim_id, EAnimRequest request)
     msg->addUUIDFast(_PREHASH_SessionID, getSessionID());
 
     msg->nextBlockFast(_PREHASH_AnimationList);
-    msg->addUUIDFast(_PREHASH_AnimID, (anim_id) );
-    msg->addBOOLFast(_PREHASH_StartAnim, (request == ANIM_REQUEST_START) ? TRUE : FALSE);
+    msg->addUUIDFast(_PREHASH_AnimID, anim_id);
+    msg->addBOOLFast(_PREHASH_StartAnim, request == ANIM_REQUEST_START);
 
     msg->nextBlockFast(_PREHASH_PhysicalAvatarEventList);
     msg->addBinaryDataFast(_PREHASH_TypeData, NULL, 0);
@@ -3363,7 +3362,7 @@ void LLAgent::sendAnimationStateReset()
 
     msg->nextBlockFast(_PREHASH_AnimationList);
     msg->addUUIDFast(_PREHASH_AnimID, LLUUID::null );
-    msg->addBOOLFast(_PREHASH_StartAnim, FALSE);
+    msg->addBOOLFast(_PREHASH_StartAnim, false);
 
     msg->nextBlockFast(_PREHASH_PhysicalAvatarEventList);
     msg->addBinaryDataFast(_PREHASH_TypeData, NULL, 0);
@@ -3404,7 +3403,7 @@ void LLAgent::sendWalkRun(bool running)
         msgsys->nextBlockFast(_PREHASH_AgentData);
         msgsys->addUUIDFast(_PREHASH_AgentID, getID());
         msgsys->addUUIDFast(_PREHASH_SessionID, getSessionID());
-        msgsys->addBOOLFast(_PREHASH_AlwaysRun, BOOL(running) );
+        msgsys->addBOOLFast(_PREHASH_AlwaysRun, bool(running) );
         sendReliableMessage();
     }
 }
@@ -3416,23 +3415,23 @@ void LLAgent::friendsChanged()
     mProxyForAgents = collector.mProxy;
 }
 
-BOOL LLAgent::isGrantedProxy(const LLPermissions& perm)
+bool LLAgent::isGrantedProxy(const LLPermissions& perm)
 {
     return (mProxyForAgents.count(perm.getOwner()) > 0);
 }
 
-BOOL LLAgent::allowOperation(PermissionBit op,
+bool LLAgent::allowOperation(PermissionBit op,
                              const LLPermissions& perm,
                              U64 group_proxy_power,
                              U8 god_minimum)
 {
     // Check god level.
-    if (getGodLevel() >= god_minimum) return TRUE;
+    if (getGodLevel() >= god_minimum) return true;
 
-    if (!perm.isOwned()) return FALSE;
+    if (!perm.isOwned()) return false;
 
     // A group member with group_proxy_power can act as owner.
-    BOOL is_group_owned;
+    bool is_group_owned;
     LLUUID owner_id;
     perm.getOwnership(owner_id, is_group_owned);
     LLUUID group_id(perm.getGroup());
@@ -3488,37 +3487,37 @@ void LLAgent::initOriginGlobal(const LLVector3d &origin_global)
     mAgentOriginGlobal = origin_global;
 }
 
-BOOL LLAgent::leftButtonGrabbed() const
+bool LLAgent::leftButtonGrabbed() const
 {
-    const BOOL camera_mouse_look = gAgentCamera.cameraMouselook();
+    const bool camera_mouse_look = gAgentCamera.cameraMouselook();
     return (!camera_mouse_look && mControlsTakenCount[CONTROL_LBUTTON_DOWN_INDEX] > 0)
         || (camera_mouse_look && mControlsTakenCount[CONTROL_ML_LBUTTON_DOWN_INDEX] > 0)
         || (!camera_mouse_look && mControlsTakenPassedOnCount[CONTROL_LBUTTON_DOWN_INDEX] > 0)
         || (camera_mouse_look && mControlsTakenPassedOnCount[CONTROL_ML_LBUTTON_DOWN_INDEX] > 0);
 }
 
-BOOL LLAgent::rotateGrabbed() const
+bool LLAgent::rotateGrabbed() const
 {
     return (mControlsTakenCount[CONTROL_YAW_POS_INDEX] > 0)
         || (mControlsTakenCount[CONTROL_YAW_NEG_INDEX] > 0);
 }
 
-BOOL LLAgent::forwardGrabbed() const
+bool LLAgent::forwardGrabbed() const
 {
     return (mControlsTakenCount[CONTROL_AT_POS_INDEX] > 0);
 }
 
-BOOL LLAgent::backwardGrabbed() const
+bool LLAgent::backwardGrabbed() const
 {
     return (mControlsTakenCount[CONTROL_AT_NEG_INDEX] > 0);
 }
 
-BOOL LLAgent::upGrabbed() const
+bool LLAgent::upGrabbed() const
 {
     return (mControlsTakenCount[CONTROL_UP_POS_INDEX] > 0);
 }
 
-BOOL LLAgent::downGrabbed() const
+bool LLAgent::downGrabbed() const
 {
     return (mControlsTakenCount[CONTROL_UP_NEG_INDEX] > 0);
 }
@@ -3814,9 +3813,9 @@ void LLAgent::processScriptControlChange(LLMessageSystem *msg, void **)
     S32 block_count = msg->getNumberOfBlocks("Data");
     for (S32 block_index = 0; block_index < block_count; block_index++)
     {
-        BOOL take_controls;
+        bool take_controls;
         U32 controls;
-        BOOL passon;
+        bool passon;
         U32 i;
         msg->getBOOL("Data", "TakeControls", take_controls, block_index);
         if (take_controls)
@@ -3938,19 +3937,19 @@ void LLAgent::processControlRelease(LLMessageSystem *msg, void **)
 }
 */
 
-BOOL LLAgent::anyControlGrabbed() const
+bool LLAgent::anyControlGrabbed() const
 {
     for (U32 i = 0; i < TOTAL_CONTROLS; i++)
     {
         if (gAgent.mControlsTakenCount[i] > 0)
-            return TRUE;
+            return true;
         if (gAgent.mControlsTakenPassedOnCount[i] > 0)
-            return TRUE;
+            return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLAgent::isControlGrabbed(S32 control_index) const
+bool LLAgent::isControlGrabbed(S32 control_index) const
 {
     return mControlsTakenCount[control_index] > 0;
 }
@@ -3966,22 +3965,22 @@ void LLAgent::forceReleaseControls()
 
 void LLAgent::setHomePosRegion( const U64& region_handle, const LLVector3& pos_region)
 {
-    mHaveHomePosition = TRUE;
+    mHaveHomePosition = true;
     mHomeRegionHandle = region_handle;
     mHomePosRegion = pos_region;
 }
 
-BOOL LLAgent::getHomePosGlobal( LLVector3d* pos_global )
+bool LLAgent::getHomePosGlobal( LLVector3d* pos_global )
 {
     if(!mHaveHomePosition)
     {
-        return FALSE;
+        return false;
     }
     F32 x = 0;
     F32 y = 0;
     from_region_handle( mHomeRegionHandle, &x, &y);
     pos_global->setVec( x + mHomePosRegion.mV[VX], y + mHomePosRegion.mV[VY], mHomePosRegion.mV[VZ] );
-    return TRUE;
+    return true;
 }
 
 bool LLAgent::isInHomeRegion()
@@ -4064,7 +4063,7 @@ bool LLAgent::teleportCore(bool is_local)
 
     // Close all pie menus, deselect land, etc.
     // Don't change the camera until we know teleport succeeded. JC
-    gAgentCamera.resetView(FALSE);
+    gAgentCamera.resetView(false);
 
     // local logic
     add(LLStatViewer::TELEPORT, 1);
@@ -4075,7 +4074,7 @@ bool LLAgent::teleportCore(bool is_local)
     }
     else
     {
-        gTeleportDisplay = TRUE;
+        gTeleportDisplay = true;
         LL_INFOS("Teleport") << "Non-local, setting teleport state to TELEPORT_START" << LL_ENDL;
         gAgent.setTeleportState( LLAgent::TELEPORT_START );
     }
@@ -4104,7 +4103,7 @@ void LLAgent::clearTeleportRequest()
 {
     if(LLVoiceClient::instanceExists())
     {
-        LLVoiceClient::getInstance()->setHidden(FALSE);
+        LLVoiceClient::getInstance()->setHidden(false);
     }
     mTeleportRequest.reset();
     mTPNeedsNeabyChatSeparator = false;
@@ -4134,7 +4133,7 @@ void LLAgent::startTeleportRequest()
     LL_INFOS("Telport") << "Agent handling start teleport request." << LL_ENDL;
     if(LLVoiceClient::instanceExists())
     {
-        LLVoiceClient::getInstance()->setHidden(TRUE);
+        LLVoiceClient::getInstance()->setHidden(true);
     }
     if (hasPendingTeleportRequest())
     {
@@ -4142,7 +4141,7 @@ void LLAgent::startTeleportRequest()
         mTeleportCanceled.reset();
         if  (!isMaturityPreferenceSyncedWithServer())
         {
-            gTeleportDisplay = TRUE;
+            gTeleportDisplay = true;
             LL_INFOS("Teleport") << "Maturity preference not synced yet, setting teleport state to TELEPORT_PENDING" << LL_ENDL;
             setTeleportState(TELEPORT_PENDING);
         }
@@ -4217,13 +4216,13 @@ void LLAgent::handleTeleportFailed()
     LL_WARNS("Teleport") << "Agent handling teleport failure!" << LL_ENDL;
     if(LLVoiceClient::instanceExists())
     {
-        LLVoiceClient::getInstance()->setHidden(FALSE);
+        LLVoiceClient::getInstance()->setHidden(false);
     }
 
     setTeleportState(LLAgent::TELEPORT_NONE);
     // Unlock the UI if the progress bar has been shown.
-//     gViewerWindow->setShowProgress(FALSE);
-//     gTeleportDisplay = FALSE;
+//     gViewerWindow->setShowProgress(false);
+//     gTeleportDisplay = false;
 
     if (mTeleportRequest)
     {
@@ -4269,14 +4268,14 @@ void LLAgent::addTPNearbyChatSeparator()
 
         LLChat chat;
         chat.mFromName = location_name;
-        chat.mMuted = FALSE;
+        chat.mMuted = false;
         chat.mFromID = LLUUID::null;
         chat.mSourceType = CHAT_SOURCE_TELEPORT;
         chat.mChatStyle = CHAT_STYLE_TELEPORT_SEP;
         chat.mText = "";
 
         LLSD args;
-        args["do_not_log"] = TRUE;
+        args["do_not_log"] = true;
         nearby_chat->addMessage(chat, true, args);
     }
 }
@@ -4360,13 +4359,13 @@ void LLAgent::doTeleportViaLandmark(const LLUUID& landmark_asset_id)
     }
 }
 
-void LLAgent::teleportViaLure(const LLUUID& lure_id, BOOL godlike)
+void LLAgent::teleportViaLure(const LLUUID& lure_id, bool godlike)
 {
     mTeleportRequest = LLTeleportRequestPtr(new LLTeleportRequestViaLure(lure_id, godlike));
     startTeleportRequest();
 }
 
-void LLAgent::doTeleportViaLure(const LLUUID& lure_id, BOOL godlike)
+void LLAgent::doTeleportViaLure(const LLUUID& lure_id, bool godlike)
 {
     LLViewerRegion* regionp = getRegion();
     if(regionp && teleportCore())
@@ -4433,7 +4432,7 @@ void LLAgent::restoreCanceledTeleportRequest()
         gAgent.setTeleportState( LLAgent::TELEPORT_REQUESTED );
         mTeleportRequest = mTeleportCanceled;
         mTeleportCanceled.reset();
-        gTeleportDisplay = TRUE;
+        gTeleportDisplay = true;
         gTeleportDisplayTimer.reset();
     }
 }
@@ -4511,7 +4510,7 @@ void LLAgent::doTeleportViaLocationLookAt(const LLVector3d& pos_global)
 
     if(!gAgentCamera.isfollowCamLocked())
     {
-        gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);  // detach camera form avatar, so it keeps direction
+        gAgentCamera.setFocusOnAvatar(false, ANIMATE);  // detach camera form avatar, so it keeps direction
     }
 
     U64 region_handle = to_region_handle(pos_global);
@@ -4597,7 +4596,7 @@ void LLAgent::stopCurrentAnimations()
             else
             {
                 // stop this animation locally
-                gAgentAvatarp->stopMotion(anim_it->first, TRUE);
+                gAgentAvatarp->stopMotion(anim_it->first, true);
                 // ...and tell the server to tell everyone.
                 anim_ids.push_back(anim_it->first);
             }
@@ -4694,7 +4693,7 @@ void LLAgent::requestEnterGodMode()
     msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
     msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
     msg->nextBlockFast(_PREHASH_RequestBlock);
-    msg->addBOOLFast(_PREHASH_Godlike, TRUE);
+    msg->addBOOLFast(_PREHASH_Godlike, true);
     msg->addUUIDFast(_PREHASH_Token, LLUUID::null);
 
     // simulators need to know about your request
@@ -4709,7 +4708,7 @@ void LLAgent::requestLeaveGodMode()
     msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
     msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
     msg->nextBlockFast(_PREHASH_RequestBlock);
-    msg->addBOOLFast(_PREHASH_Godlike, FALSE);
+    msg->addBOOLFast(_PREHASH_Godlike, false);
     msg->addUUIDFast(_PREHASH_Token, LLUUID::null);
 
     // simulator needs to know about your request
@@ -4902,7 +4901,7 @@ const std::string& LLAgent::getTeleportStateName() const
 void LLAgent::parseTeleportMessages(const std::string& xml_filename)
 {
     LLXMLNodePtr root;
-    BOOL success = LLUICtrlFactory::getLayeredXMLNode(xml_filename, root);
+    bool success = LLUICtrlFactory::getLayeredXMLNode(xml_filename, root);
 
     if (!success || !root || !root->hasName( "teleport_messages" ))
     {
@@ -5090,7 +5089,7 @@ void LLTeleportRequestViaLandmark::restartTeleport()
 // LLTeleportRequestViaLure
 //-----------------------------------------------------------------------------
 
-LLTeleportRequestViaLure::LLTeleportRequestViaLure(const LLUUID &pLureId, BOOL pIsLureGodLike)
+LLTeleportRequestViaLure::LLTeleportRequestViaLure(const LLUUID &pLureId, bool pIsLureGodLike)
     : LLTeleportRequestViaLandmark(pLureId),
     mIsLureGodLike(pIsLureGodLike)
 {
diff --git a/indra/newview/llagent.h b/indra/newview/llagent.h
index 71fa4e20b1..9cd3e80f69 100644
--- a/indra/newview/llagent.h
+++ b/indra/newview/llagent.h
@@ -43,7 +43,7 @@
 #include <boost/shared_ptr.hpp>
 #include <boost/signals2.hpp>
 
-extern const BOOL   ANIMATE;
+extern const bool   ANIMATE;
 extern const U8     AGENT_STATE_TYPING;  // Typing indication
 extern const U8     AGENT_STATE_EDITING; // Set when agent has objects selected
 
@@ -78,8 +78,8 @@ struct LLGroupData
     LLUUID mID;
     LLUUID mInsigniaID;
     U64 mPowers;
-    BOOL mAcceptNotices;
-    BOOL mListInProfile;
+    bool mAcceptNotices;
+    bool mListInProfile;
     S32 mContribution;
     std::string mName;
 };
@@ -118,7 +118,7 @@ private:
 public:
     void            onAppFocusGained();
     void            setFirstLogin(bool b);
-    // Return TRUE if the database reported this login as the first for this particular user.
+    // Return true if the database reported this login as the first for this particular user.
     bool            isFirstLogin() const    { return mFirstLogin; }
     bool            isInitialized() const   { return mInitialized; }
 
@@ -169,10 +169,10 @@ public:
     // On the very first login, outfit needs to be chosen by some
     // mechanism, usually by loading the requested initial outfit.  We
     // don't render the avatar until the choice is made.
-    BOOL            isOutfitChosen() const  { return mOutfitChosen; }
-    void            setOutfitChosen(BOOL b) { mOutfitChosen = b; }
+    bool            isOutfitChosen() const  { return mOutfitChosen; }
+    void            setOutfitChosen(bool b) { mOutfitChosen = b; }
 private:
-    BOOL            mOutfitChosen;
+    bool            mOutfitChosen;
 
 /**                    Identity
  **                                                                            **
@@ -238,13 +238,13 @@ private:
 public:
     void            setStartPosition(U32 location_id); // Marks current location as start, sends information to servers
     void            setHomePosRegion(const U64& region_handle, const LLVector3& pos_region);
-    BOOL            getHomePosGlobal(LLVector3d* pos_global);
+    bool            getHomePosGlobal(LLVector3d* pos_global);
     bool            isInHomeRegion();
 
 private:
     void            setStartPositionSuccess(const LLSD &result);
 
-    BOOL            mHaveHomePosition;
+    bool            mHaveHomePosition;
     U64             mHomeRegionHandle;
     LLVector3       mHomePosRegion;
 
@@ -271,7 +271,7 @@ public:
     void            setRegion(LLViewerRegion *regionp);
     LLViewerRegion  *getRegion() const;
     LLHost          getRegionHost() const;
-    BOOL            inPrelude();
+    bool            inPrelude();
 
     // Capability
     std::string     getRegionCapability(const std::string &name); // short hand for if (getRegion()) { getRegion()->getCapability(name) }
@@ -352,11 +352,11 @@ private:
     // Fly
     //--------------------------------------------------------------------
 public:
-    BOOL            getFlying() const;
-    void            setFlying(BOOL fly, BOOL fail_sound = FALSE);
+    bool            getFlying() const;
+    void            setFlying(bool fly, bool fail_sound = false);
     static void     toggleFlying();
     static bool     enableFlying();
-    BOOL            canFly();           // Does this parcel allow you to fly?
+    bool            canFly();           // Does this parcel allow you to fly?
     static bool     isSitting();
 
     //--------------------------------------------------------------------
@@ -409,7 +409,7 @@ private:
 public:
     void            setAFK();
     void            clearAFK();
-    BOOL            getAFK() const;
+    bool            getAFK() const;
     static const F32 MIN_AFK_TIME;
 
     //--------------------------------------------------------------------
@@ -461,12 +461,12 @@ private:
     // Grab
     //--------------------------------------------------------------------
 public:
-    BOOL            leftButtonGrabbed() const;
-    BOOL            rotateGrabbed() const;
-    BOOL            forwardGrabbed() const;
-    BOOL            backwardGrabbed() const;
-    BOOL            upGrabbed() const;
-    BOOL            downGrabbed() const;
+    bool            leftButtonGrabbed() const;
+    bool            rotateGrabbed() const;
+    bool            forwardGrabbed() const;
+    bool            backwardGrabbed() const;
+    bool            upGrabbed() const;
+    bool            downGrabbed() const;
 
     //--------------------------------------------------------------------
     // Controls
@@ -475,22 +475,22 @@ public:
     U32             getControlFlags();
     void            setControlFlags(U32 mask);      // Performs bitwise mControlFlags |= mask
     void            clearControlFlags(U32 mask);    // Performs bitwise mControlFlags &= ~mask
-    BOOL            controlFlagsDirty() const;
+    bool            controlFlagsDirty() const;
     void            enableControlFlagReset();
     void            resetControlFlags();
-    BOOL            anyControlGrabbed() const;      // True iff a script has taken over a control
-    BOOL            isControlGrabbed(S32 control_index) const;
+    bool            anyControlGrabbed() const;      // True iff a script has taken over a control
+    bool            isControlGrabbed(S32 control_index) const;
     // Send message to simulator to force grabbed controls to be
     // released, in case of a poorly written script.
     void            forceReleaseControls();
-    void            setFlagsDirty() { mbFlagsDirty = TRUE; }
+    void            setFlagsDirty() { mbFlagsDirty = true; }
 
 private:
     S32             mControlsTakenCount[TOTAL_CONTROLS];
     S32             mControlsTakenPassedOnCount[TOTAL_CONTROLS];
     U32             mControlFlags;                  // Replacement for the mFooKey's
-    BOOL            mbFlagsDirty;
-    BOOL            mbFlagsNeedReset;               // ! HACK ! For preventing incorrect flags sent when crossing region boundaries
+    bool            mbFlagsDirty;
+    bool            mbFlagsNeedReset;               // ! HACK ! For preventing incorrect flags sent when crossing region boundaries
 
     //--------------------------------------------------------------------
     // Animations
@@ -506,8 +506,8 @@ public:
 
     void            endAnimationUpdateUI();
     void            unpauseAnimation() { mPauseRequest = NULL; }
-    BOOL            getCustomAnim() const { return mCustomAnim; }
-    void            setCustomAnim(BOOL anim) { mCustomAnim = anim; }
+    bool            getCustomAnim() const { return mCustomAnim; }
+    void            setCustomAnim(bool anim) { mCustomAnim = anim; }
 
     typedef boost::signals2::signal<void ()> camera_signal_t;
     boost::signals2::connection setMouselookModeInCallback( const camera_signal_t::slot_type& cb );
@@ -516,9 +516,9 @@ public:
 private:
     camera_signal_t* mMouselookModeInSignal;
     camera_signal_t* mMouselookModeOutSignal;
-    BOOL            mCustomAnim;        // Current animation is ANIM_AGENT_CUSTOMIZE ?
+    bool            mCustomAnim;        // Current animation is ANIM_AGENT_CUSTOMIZE ?
     LLPointer<LLPauseRequestHandle> mPauseRequest;
-    BOOL            mViewsPushed;       // Keep track of whether or not we have pushed views
+    bool            mViewsPushed;       // Keep track of whether or not we have pushed views
 
 /**                    Animation
  **                                                                            **
@@ -544,8 +544,8 @@ public:
     void            moveYaw(F32 mag, bool reset_view = true);
     void            movePitch(F32 mag);
 
-    BOOL            isMovementLocked() const                { return mMovementKeysLocked; }
-    void            setMovementLocked(BOOL set_locked)  { mMovementKeysLocked = set_locked; }
+    bool            isMovementLocked() const                { return mMovementKeysLocked; }
+    void            setMovementLocked(bool set_locked)  { mMovementKeysLocked = set_locked; }
 
     //--------------------------------------------------------------------
     // Move the avatar's frame
@@ -564,12 +564,12 @@ public:
     // Autopilot
     //--------------------------------------------------------------------
 public:
-    BOOL            getAutoPilot() const                { return mAutoPilot; }
+    bool            getAutoPilot() const                { return mAutoPilot; }
     LLVector3d      getAutoPilotTargetGlobal() const    { return mAutoPilotTargetGlobal; }
     LLUUID          getAutoPilotLeaderID() const        { return mLeaderID; }
     F32             getAutoPilotStopDistance() const    { return mAutoPilotStopDistance; }
     F32             getAutoPilotTargetDist() const      { return mAutoPilotTargetDist; }
-    BOOL            getAutoPilotUseRotation() const     { return mAutoPilotUseRotation; }
+    bool            getAutoPilotUseRotation() const     { return mAutoPilotUseRotation; }
     LLVector3       getAutoPilotTargetFacing() const    { return mAutoPilotTargetFacing; }
     F32             getAutoPilotRotationThreshold() const   { return mAutoPilotRotationThreshold; }
     std::string     getAutoPilotBehaviorName() const    { return mAutoPilotBehaviorName; }
@@ -577,30 +577,30 @@ public:
     void            startAutoPilotGlobal(const LLVector3d &pos_global,
                                          const std::string& behavior_name = std::string(),
                                          const LLQuaternion *target_rotation = NULL,
-                                         void (*finish_callback)(BOOL, void *) = NULL, void *callback_data = NULL,
+                                         void (*finish_callback)(bool, void *) = NULL, void *callback_data = NULL,
                                          F32 stop_distance = 0.f, F32 rotation_threshold = 0.03f,
-                                         BOOL allow_flying = TRUE);
-    void            startFollowPilot(const LLUUID &leader_id, BOOL allow_flying = TRUE, F32 stop_distance = 0.5f);
-    void            stopAutoPilot(BOOL user_cancel = FALSE);
+                                         bool allow_flying = true);
+    void            startFollowPilot(const LLUUID &leader_id, bool allow_flying = true, F32 stop_distance = 0.5f);
+    void            stopAutoPilot(bool user_cancel = false);
     void            setAutoPilotTargetGlobal(const LLVector3d &target_global);
     void            autoPilot(F32 *delta_yaw);          // Autopilot walking action, angles in radians
     void            renderAutoPilotTarget();
 private:
-    BOOL            mAutoPilot;
-    BOOL            mAutoPilotFlyOnStop;
-    BOOL            mAutoPilotAllowFlying;
+    bool            mAutoPilot;
+    bool            mAutoPilotFlyOnStop;
+    bool            mAutoPilotAllowFlying;
     LLVector3d      mAutoPilotTargetGlobal;
     F32             mAutoPilotStopDistance;
-    BOOL            mAutoPilotUseRotation;
+    bool            mAutoPilotUseRotation;
     LLVector3       mAutoPilotTargetFacing;
     F32             mAutoPilotTargetDist;
     S32             mAutoPilotNoProgressFrameCount;
     F32             mAutoPilotRotationThreshold;
     std::string     mAutoPilotBehaviorName;
-    void            (*mAutoPilotFinishedCallback)(BOOL, void *);
+    void            (*mAutoPilotFinishedCallback)(bool, void *);
     void*           mAutoPilotCallbackData;
     LLUUID          mLeaderID;
-    BOOL            mMovementKeysLocked;
+    bool            mMovementKeysLocked;
 
 /**                    Movement
  **                                                                            **
@@ -644,7 +644,7 @@ private:
 public:
     void            teleportViaLandmark(const LLUUID& landmark_id);         // Teleport to a landmark
     void            teleportHome()  { teleportViaLandmark(LLUUID::null); }  // Go home
-    void            teleportViaLure(const LLUUID& lure_id, BOOL godlike);   // To an invited location
+    void            teleportViaLure(const LLUUID& lure_id, bool godlike);   // To an invited location
     void            teleportViaLocation(const LLVector3d& pos_global);      // To a global location - this will probably need to be deprecated
     void            teleportViaLocationLookAt(const LLVector3d& pos_global);// To a global location, preserving camera rotation
     void            teleportCancel();                                       // May or may not be allowed by server
@@ -690,7 +690,7 @@ private:
                                     const LLVector3& pos_local,             // Go to a named location home
                                     bool look_at_from_camera = false);
     void            doTeleportViaLandmark(const LLUUID& landmark_id);           // Teleport to a landmark
-    void            doTeleportViaLure(const LLUUID& lure_id, BOOL godlike); // To an invited location
+    void            doTeleportViaLure(const LLUUID& lure_id, bool godlike); // To an invited location
     void            doTeleportViaLocation(const LLVector3d& pos_global);        // To a global location - this will probably need to be deprecated
     void            doTeleportViaLocationLookAt(const LLVector3d& pos_global);// To a global location, preserving camera rotation
 
@@ -738,14 +738,14 @@ private:
 
 public:
     // Checks if agent can modify an object based on the permissions and the agent's proxy status.
-    BOOL            isGrantedProxy(const LLPermissions& perm);
-    BOOL            allowOperation(PermissionBit op,
+    bool            isGrantedProxy(const LLPermissions& perm);
+    bool            allowOperation(PermissionBit op,
                                    const LLPermissions& perm,
                                    U64 group_proxy_power = 0,
                                    U8 god_minimum = GOD_MAINTENANCE);
     const LLAgentAccess& getAgentAccess();
-    BOOL            canManageEstate() const;
-    BOOL            getAdminOverride() const;
+    bool            canManageEstate() const;
+    bool            getAdminOverride() const;
 private:
     LLAgentAccess * mAgentAccess;
 
@@ -756,7 +756,7 @@ public:
     bool            isGodlike() const;
     bool            isGodlikeWithoutAdminMenuFakery() const;
     U8              getGodLevel() const;
-    void            setAdminOverride(BOOL b);
+    void            setAdminOverride(bool b);
     void            setGodLevel(U8 god_level);
     void            requestEnterGodMode();
     void            requestLeaveGodMode();
@@ -827,13 +827,13 @@ private:
 
 public:
     LLQuaternion    getHeadRotation();
-    BOOL            needsRenderAvatar(); // TRUE when camera mode is such that your own avatar should draw
-    BOOL            needsRenderHead();
-    void            setShowAvatar(BOOL show) { mShowAvatar = show; }
-    BOOL            getShowAvatar() const { return mShowAvatar; }
+    bool            needsRenderAvatar(); // true when camera mode is such that your own avatar should draw
+    bool            needsRenderHead();
+    void            setShowAvatar(bool show) { mShowAvatar = show; }
+    bool            getShowAvatar() const { return mShowAvatar; }
 
 private:
-    BOOL            mShowAvatar;        // Should we render the avatar?
+    bool            mShowAvatar;        // Should we render the avatar?
 
     //--------------------------------------------------------------------
     // Rendering state bitmap helpers
@@ -865,15 +865,15 @@ private:
 
 public:
     const LLUUID    &getGroupID() const         { return mGroupID; }
-    // Get group information by group_id, or FALSE if not in group.
-    BOOL            getGroupData(const LLUUID& group_id, LLGroupData& data) const;
+    // Get group information by group_id, or false if not in group.
+    bool            getGroupData(const LLUUID& group_id, LLGroupData& data) const;
     // Get just the agent's contribution to the given group.
     S32             getGroupContribution(const LLUUID& group_id) const;
     // Update internal datastructures and update the server.
-    BOOL            setGroupContribution(const LLUUID& group_id, S32 contribution);
-    BOOL            setUserGroupFlags(const LLUUID& group_id, BOOL accept_notices, BOOL list_in_profile);
+    bool            setGroupContribution(const LLUUID& group_id, S32 contribution);
+    bool            setUserGroupFlags(const LLUUID& group_id, bool accept_notices, bool list_in_profile);
     const std::string &getGroupName() const     { return mGroupName; }
-    BOOL            canJoinGroups() const;
+    bool            canJoinGroups() const;
 private:
     std::string     mGroupName;
     LLUUID          mGroupID;
@@ -883,10 +883,10 @@ private:
     //--------------------------------------------------------------------
 public:
     // Checks against all groups in the entire agent group list.
-    BOOL            isInGroup(const LLUUID& group_id, BOOL ingnore_God_mod = FALSE) const;
+    bool            isInGroup(const LLUUID& group_id, bool ingnore_God_mod = false) const;
 protected:
     // Only used for building titles.
-    BOOL            isGroupMember() const       { return !mGroupID.isNull(); }
+    bool            isGroupMember() const       { return !mGroupID.isNull(); }
 public:
     std::vector<LLGroupData> mGroups;
 
@@ -894,18 +894,18 @@ public:
     // Group Title
     //--------------------------------------------------------------------
 public:
-    void            setHideGroupTitle(BOOL hide)    { mHideGroupTitle = hide; }
-    BOOL            isGroupTitleHidden() const      { return mHideGroupTitle; }
+    void            setHideGroupTitle(bool hide)    { mHideGroupTitle = hide; }
+    bool            isGroupTitleHidden() const      { return mHideGroupTitle; }
 private:
     std::string     mGroupTitle;                    // Honorific, like "Sir"
-    BOOL            mHideGroupTitle;
+    bool            mHideGroupTitle;
 
     //--------------------------------------------------------------------
     // Group Powers
     //--------------------------------------------------------------------
 public:
-    BOOL            hasPowerInGroup(const LLUUID& group_id, U64 power) const;
-    BOOL            hasPowerInActiveGroup(const U64 power) const;
+    bool            hasPowerInGroup(const LLUUID& group_id, U64 power) const;
+    bool            hasPowerInActiveGroup(const U64 power) const;
     U64             getPowerInGroup(const LLUUID& group_id) const;
     U64             mGroupPowers;
 
diff --git a/indra/newview/llagentcamera.cpp b/indra/newview/llagentcamera.cpp
index 8e8d7e6c50..15d3b93818 100644
--- a/indra/newview/llagentcamera.cpp
+++ b/indra/newview/llagentcamera.cpp
@@ -123,14 +123,14 @@ LLAgentCamera::LLAgentCamera() :
     mHUDTargetZoom(1.f),
     mHUDCurZoom(1.f),
 
-    mForceMouselook(FALSE),
+    mForceMouselook(false),
 
     mCameraMode( CAMERA_MODE_THIRD_PERSON ),
     mLastCameraMode( CAMERA_MODE_THIRD_PERSON ),
 
     mCameraPreset(CAMERA_PRESET_REAR_VIEW),
 
-    mCameraAnimating( FALSE ),
+    mCameraAnimating( false ),
     mAnimationCameraStartGlobal(),
     mAnimationFocusStartGlobal(),
     mAnimationTimer(),
@@ -146,21 +146,21 @@ LLAgentCamera::LLAgentCamera() :
     mTargetCameraDistance(2.f),
     mCameraZoomFraction(1.f),           // deprecated
     mThirdPersonHeadOffset(0.f, 0.f, 1.f),
-    mSitCameraEnabled(FALSE),
+    mSitCameraEnabled(false),
     mCameraSmoothingLastPositionGlobal(),
     mCameraSmoothingLastPositionAgent(),
     mCameraSmoothingStop(false),
 
     mCameraUpVector(LLVector3::z_axis), // default is straight up
 
-    mFocusOnAvatar(TRUE),
-    mAllowChangeToFollow(FALSE),
+    mFocusOnAvatar(true),
+    mAllowChangeToFollow(false),
     mFocusGlobal(),
     mFocusTargetGlobal(),
     mFocusObject(NULL),
     mFocusObjectDist(0.f),
     mFocusObjectOffset(),
-    mTrackFocusObject(TRUE),
+    mTrackFocusObject(true),
 
     mAtKey(0), // Either 1, 0, or -1... indicates that movement-key is pressed
     mWalkKey(0), // like AtKey, but causes less forward thrust
@@ -279,7 +279,7 @@ LLAgentCamera::~LLAgentCamera()
 //-----------------------------------------------------------------------------
 // resetView()
 //-----------------------------------------------------------------------------
-void LLAgentCamera::resetView(BOOL reset_camera, BOOL change_camera)
+void LLAgentCamera::resetView(bool reset_camera, bool change_camera)
 {
     if (gDisconnected)
     {
@@ -288,7 +288,7 @@ void LLAgentCamera::resetView(BOOL reset_camera, BOOL change_camera)
 
     if (gAgent.getAutoPilot())
     {
-        gAgent.stopAutoPilot(TRUE);
+        gAgent.stopAutoPilot(true);
     }
 
     LLSelectMgr::getInstance()->unhighlightAll();
@@ -348,7 +348,7 @@ void LLAgentCamera::resetView(BOOL reset_camera, BOOL change_camera)
             gAgent.resetAxes(lerp(gAgent.getAtAxis(), agent_at_axis, LLSmoothInterpolation::getInterpolant(0.3f)));
         }
 
-        setFocusOnAvatar(TRUE, ANIMATE);
+        setFocusOnAvatar(true, ANIMATE);
 
         mCameraFOVZoomFactor = 0.f;
     }
@@ -381,7 +381,7 @@ void LLAgentCamera::unlockView()
         {
             setFocusGlobal(LLVector3d::zero, gAgentAvatarp->mID);
         }
-        setFocusOnAvatar(FALSE, FALSE); // no animation
+        setFocusOnAvatar(false, false); // no animation
     }
 }
 
@@ -572,16 +572,16 @@ LLVector3 LLAgentCamera::calcFocusOffset(LLViewerObject *object, LLVector3 origi
 //-----------------------------------------------------------------------------
 // calcCameraMinDistance()
 //-----------------------------------------------------------------------------
-BOOL LLAgentCamera::calcCameraMinDistance(F32 &obj_min_distance)
+bool LLAgentCamera::calcCameraMinDistance(F32 &obj_min_distance)
 {
-    BOOL soft_limit = FALSE; // is the bounding box to be treated literally (volumes) or as an approximation (avatars)
+    bool soft_limit = false; // is the bounding box to be treated literally (volumes) or as an approximation (avatars)
 
     if (!mFocusObject || mFocusObject->isDead() ||
         mFocusObject->isMesh() ||
         isDisableCameraConstraints())
     {
         obj_min_distance = 0.f;
-        return TRUE;
+        return true;
     }
 
     if (mFocusObject->mDrawable.isNull())
@@ -593,7 +593,7 @@ BOOL LLAgentCamera::calcCameraMinDistance(F32 &obj_min_distance)
         LL_ERRS() << "Focus object with no drawable!" << LL_ENDL;
 #endif
         obj_min_distance = 0.f;
-        return TRUE;
+        return true;
     }
 
     LLQuaternion inv_object_rot = ~mFocusObject->getRenderRotation();
@@ -612,20 +612,20 @@ BOOL LLAgentCamera::calcCameraMinDistance(F32 &obj_min_distance)
         object_extents.mV[VX] *= AVATAR_ZOOM_MIN_X_FACTOR;
         object_extents.mV[VY] *= AVATAR_ZOOM_MIN_Y_FACTOR;
         object_extents.mV[VZ] *= AVATAR_ZOOM_MIN_Z_FACTOR;
-        soft_limit = TRUE;
+        soft_limit = true;
     }
     LLVector3 abs_target_offset = target_offset_origin;
     abs_target_offset.abs();
 
     LLVector3 target_offset_dir = target_offset_origin;
 
-    BOOL target_outside_object_extents = FALSE;
+    bool target_outside_object_extents = false;
 
     for (U32 i = VX; i <= VZ; i++)
     {
         if (abs_target_offset.mV[i] * 2.f > object_extents.mV[i] + OBJECT_EXTENTS_PADDING)
         {
-            target_outside_object_extents = TRUE;
+            target_outside_object_extents = true;
         }
         if (camera_offset_target.mV[i] > 0.f)
         {
@@ -722,11 +722,11 @@ BOOL LLAgentCamera::calcCameraMinDistance(F32 &obj_min_distance)
     {
         if (camera_offset_clip > 0.f && target_offset_clip > 0.f)
         {
-            return FALSE;
+            return false;
         }
         else if (camera_offset_clip < 0.f && target_offset_clip < 0.f)
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -735,7 +735,7 @@ BOOL LLAgentCamera::calcCameraMinDistance(F32 &obj_min_distance)
 
     obj_min_distance += LLViewerCamera::getInstance()->getNear() + (soft_limit ? 0.1f : 0.2f);
 
-    return TRUE;
+    return true;
 }
 
 F32 LLAgentCamera::getCameraZoomFraction(bool get_third_person)
@@ -749,11 +749,6 @@ F32 LLAgentCamera::getCameraZoomFraction(bool get_third_person)
         return mHUDTargetZoom;
     }
 
-    if (isDisableCameraConstraints())
-    {
-        return mCameraZoomFraction;
-    }
-
     if (get_third_person || (mFocusOnAvatar && cameraThirdPerson()))
     {
         return clamp_rescale(mCameraZoomFraction, MIN_ZOOM_FRACTION, MAX_ZOOM_FRACTION, 1.f, 0.f);
@@ -767,6 +762,10 @@ F32 LLAgentCamera::getCameraZoomFraction(bool get_third_person)
 
     F32 min_zoom;
     F32 max_zoom = getCameraMaxZoomDistance();
+    if (isDisableCameraConstraints())
+    {
+        max_zoom = MAX_CAMERA_DISTANCE_FROM_OBJECT;
+    }
 
     F32 distance = (F32)mCameraFocusOffsetTarget.magVec();
     if (mFocusObject.notNull())
@@ -798,10 +797,6 @@ void LLAgentCamera::setCameraZoomFraction(F32 fraction)
     {
         mHUDTargetZoom = fraction;
     }
-    else if (isDisableCameraConstraints())
-    {
-        mCameraZoomFraction = fraction;
-    }
     else if (mFocusOnAvatar && cameraThirdPerson())
     {
         mCameraZoomFraction = rescale(fraction, 0.f, 1.f, MAX_ZOOM_FRACTION, MIN_ZOOM_FRACTION);
@@ -816,6 +811,10 @@ void LLAgentCamera::setCameraZoomFraction(F32 fraction)
     {
         F32 min_zoom = LAND_MIN_ZOOM;
         F32 max_zoom = getCameraMaxZoomDistance();
+        if (isDisableCameraConstraints())
+        {
+            max_zoom = MAX_CAMERA_DISTANCE_FROM_OBJECT;
+        }
 
         if (mFocusObject.notNull())
         {
@@ -994,7 +993,7 @@ void LLAgentCamera::cameraOrbitIn(const F32 meters)
         if (!gSavedSettings.getBOOL("FreezeTime") && mCameraZoomFraction < MIN_ZOOM_FRACTION && meters > 0.f)
         {
             // No need to animate, camera is already there.
-            changeCameraToMouselook(FALSE);
+            changeCameraToMouselook(false);
         }
 
         if (!isDisableCameraConstraints())
@@ -1195,7 +1194,7 @@ void LLAgentCamera::updateLookAt(const S32 mouse_x, const S32 mouse_y)
 
 static LLTrace::BlockTimerStatHandle FTM_UPDATE_CAMERA("Camera");
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 //-----------------------------------------------------------------------------
 // updateCamera()
@@ -1226,8 +1225,8 @@ void LLAgentCamera::updateCamera()
 
     if (cameraThirdPerson() && (mFocusOnAvatar || mAllowChangeToFollow) && LLFollowCamMgr::getInstance()->getActiveFollowCamParams())
     {
-        mAllowChangeToFollow = FALSE;
-        mFocusOnAvatar = TRUE;
+        mAllowChangeToFollow = false;
+        mFocusOnAvatar = true;
         changeCameraToFollow();
     }
 
@@ -1334,12 +1333,12 @@ void LLAgentCamera::updateCamera()
             }
             else
             {
-                changeCameraToThirdPerson(TRUE);
+                changeCameraToThirdPerson(true);
             }
         }
     }
 
-    BOOL hit_limit;
+    bool hit_limit;
     LLVector3d camera_pos_global;
     LLVector3d camera_target_global = calcCameraPositionTargetGlobal(&hit_limit);
     mCameraVirtualPositionAgent = gAgent.getPosAgentFromGlobal(camera_target_global);
@@ -1349,7 +1348,7 @@ void LLAgentCamera::updateCamera()
     mCameraFOVZoomFactor = calcCameraFOVZoomFactor();
     camera_target_global = focus_target_global + (camera_target_global - focus_target_global) * (1.f + mCameraFOVZoomFactor);
 
-    gAgent.setShowAvatar(TRUE); // can see avatar by default
+    gAgent.setShowAvatar(true); // can see avatar by default
 
     // Adjust position for animation
     if (mCameraAnimating)
@@ -1362,8 +1361,8 @@ void LLAgentCamera::updateCamera()
         // linear interpolation
         F32 fraction_of_animation = time / mAnimationDuration;
 
-        BOOL isfirstPerson = mCameraMode == CAMERA_MODE_MOUSELOOK;
-        BOOL wasfirstPerson = mLastCameraMode == CAMERA_MODE_MOUSELOOK;
+        bool isfirstPerson = mCameraMode == CAMERA_MODE_MOUSELOOK;
+        bool wasfirstPerson = mLastCameraMode == CAMERA_MODE_MOUSELOOK;
         F32 fraction_animation_to_skip;
 
         if (mAnimationCameraStartGlobal == camera_target_global)
@@ -1382,7 +1381,7 @@ void LLAgentCamera::updateCamera()
         {
             if (fraction_of_animation < animation_start_fraction || fraction_of_animation > animation_finish_fraction )
             {
-                gAgent.setShowAvatar(FALSE);
+                gAgent.setShowAvatar(false);
             }
 
             // ...adjust position for animation
@@ -1393,13 +1392,13 @@ void LLAgentCamera::updateCamera()
         else
         {
             // ...animation complete
-            mCameraAnimating = FALSE;
+            mCameraAnimating = false;
 
             camera_pos_global = camera_target_global;
             mFocusGlobal = focus_target_global;
 
             gAgent.endAnimationUpdateUI();
-            gAgent.setShowAvatar(TRUE);
+            gAgent.setShowAvatar(true);
         }
 
         if (isAgentAvatarValid() && (mCameraMode != CAMERA_MODE_MOUSELOOK))
@@ -1411,11 +1410,11 @@ void LLAgentCamera::updateCamera()
     {
         camera_pos_global = camera_target_global;
         mFocusGlobal = focus_target_global;
-        gAgent.setShowAvatar(TRUE);
+        gAgent.setShowAvatar(true);
     }
 
     // smoothing
-    if (TRUE)
+    if (true)
     {
         LLVector3d agent_pos = gAgent.getPositionGlobal();
         LLVector3d camera_pos_agent = camera_pos_global - agent_pos;
@@ -1428,7 +1427,7 @@ void LLAgentCamera::updateCamera()
         {
             const F32 SMOOTHING_HALF_LIFE = 0.02f;
 
-            F32 smoothing = LLSmoothInterpolation::getInterpolant(gSavedSettings.getF32("CameraPositionSmoothing") * SMOOTHING_HALF_LIFE, FALSE);
+            F32 smoothing = LLSmoothInterpolation::getInterpolant(gSavedSettings.getF32("CameraPositionSmoothing") * SMOOTHING_HALF_LIFE, false);
 
             if (mFocusOnAvatar && !mFocusObject) // we differentiate on avatar mode
             {
@@ -1751,7 +1750,7 @@ F32 LLAgentCamera::calcCameraFOVZoomFactor()
 //-----------------------------------------------------------------------------
 // calcCameraPositionTargetGlobal()
 //-----------------------------------------------------------------------------
-LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(BOOL *hit_limit)
+LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(bool *hit_limit)
 {
     // Compute base camera position and look-at points.
     F32         camera_land_height;
@@ -1759,7 +1758,7 @@ LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(BOOL *hit_limit)
         gAgent.getPositionGlobal() :
         gAgent.getPosGlobalFromAgent(getAvatarRootPosition());
 
-    BOOL        isConstrained = FALSE;
+    bool        isConstrained = false;
     LLVector3d  head_offset;
     head_offset.setVec(mThirdPersonHeadOffset);
 
@@ -1986,7 +1985,7 @@ LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(BOOL *hit_limit)
             if(camera_distance > max_dist)
             {
                 camera_position_global = gAgent.getPositionGlobal() + (max_dist/camera_distance)*camera_offset;
-                isConstrained = TRUE;
+                isConstrained = true;
             }
         }
 
@@ -1997,7 +1996,7 @@ LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(BOOL *hit_limit)
 //          {
 //              camera_position_global = last_position_global;
 //
-//              isConstrained = TRUE;
+//              isConstrained = true;
 //          }
     }
 
@@ -2008,7 +2007,7 @@ LLVector3d LLAgentCamera::calcCameraPositionTargetGlobal(BOOL *hit_limit)
     if (camera_position_global.mdV[VZ] < minZ)
     {
         camera_position_global.mdV[VZ] = minZ;
-        isConstrained = TRUE;
+        isConstrained = true;
     }
 
     if (hit_limit)
@@ -2090,7 +2089,7 @@ void LLAgentCamera::handleScrollWheel(S32 clicks)
             mFollowCam.zoom(clicks);
             if (mFollowCam.isZoomedToMinimumDistance())
             {
-                changeCameraToMouselook(FALSE);
+                changeCameraToMouselook(false);
             }
         }
     }
@@ -2166,7 +2165,7 @@ void LLAgentCamera::resetCamera()
 //-----------------------------------------------------------------------------
 // changeCameraToMouselook()
 //-----------------------------------------------------------------------------
-void LLAgentCamera::changeCameraToMouselook(BOOL animate)
+void LLAgentCamera::changeCameraToMouselook(bool animate)
 {
     if (!gSavedSettings.getBOOL("EnableMouselook")
         || LLViewerJoystick::getInstance()->getOverrideCamera())
@@ -2216,7 +2215,7 @@ void LLAgentCamera::changeCameraToMouselook(BOOL animate)
         }
         else
         {
-            mCameraAnimating = FALSE;
+            mCameraAnimating = false;
             gAgent.endAnimationUpdateUI();
         }
     }
@@ -2252,7 +2251,7 @@ void LLAgentCamera::changeCameraToDefault()
 //-----------------------------------------------------------------------------
 // changeCameraToFollow()
 //-----------------------------------------------------------------------------
-void LLAgentCamera::changeCameraToFollow(BOOL animate)
+void LLAgentCamera::changeCameraToFollow(bool animate)
 {
     if (LLViewerJoystick::getInstance()->getOverrideCamera())
     {
@@ -2263,7 +2262,7 @@ void LLAgentCamera::changeCameraToFollow(BOOL animate)
     {
         if (mCameraMode == CAMERA_MODE_MOUSELOOK)
         {
-            animate = FALSE;
+            animate = false;
         }
         startCameraAnimation();
 
@@ -2297,7 +2296,7 @@ void LLAgentCamera::changeCameraToFollow(BOOL animate)
         }
         else
         {
-            mCameraAnimating = FALSE;
+            mCameraAnimating = false;
             gAgent.endAnimationUpdateUI();
         }
     }
@@ -2306,7 +2305,7 @@ void LLAgentCamera::changeCameraToFollow(BOOL animate)
 //-----------------------------------------------------------------------------
 // changeCameraToThirdPerson()
 //-----------------------------------------------------------------------------
-void LLAgentCamera::changeCameraToThirdPerson(BOOL animate)
+void LLAgentCamera::changeCameraToThirdPerson(bool animate)
 {
     if (LLViewerJoystick::getInstance()->getOverrideCamera())
     {
@@ -2345,7 +2344,7 @@ void LLAgentCamera::changeCameraToThirdPerson(BOOL animate)
         {
             mCurrentCameraDistance = MIN_CAMERA_DISTANCE;
             mTargetCameraDistance = MIN_CAMERA_DISTANCE;
-            animate = FALSE;
+            animate = false;
         }
         updateLastCamera();
         mCameraMode = CAMERA_MODE_THIRD_PERSON;
@@ -2368,7 +2367,7 @@ void LLAgentCamera::changeCameraToThirdPerson(BOOL animate)
     }
     else
     {
-        mCameraAnimating = FALSE;
+        mCameraAnimating = false;
         gAgent.endAnimationUpdateUI();
     }
 }
@@ -2408,7 +2407,7 @@ void LLAgentCamera::changeCameraToCustomizeAvatar()
         gFocusMgr.setMouseCapture( NULL );
         if( gMorphView )
         {
-            gMorphView->setVisible( TRUE );
+            gMorphView->setVisible( true );
         }
         // Remove any pitch or rotation from the avatar
         LLVector3 at = gAgent.getAtAxis();
@@ -2417,7 +2416,7 @@ void LLAgentCamera::changeCameraToCustomizeAvatar()
         gAgent.resetAxes(at);
 
         gAgent.sendAnimationRequest(ANIM_AGENT_CUSTOMIZE, ANIM_REQUEST_START);
-        gAgent.setCustomAnim(TRUE);
+        gAgent.setCustomAnim(true);
         gAgentAvatarp->startMotion(ANIM_AGENT_CUSTOMIZE);
         LLMotion* turn_motion = gAgentAvatarp->findMotion(ANIM_AGENT_CUSTOMIZE);
 
@@ -2453,7 +2452,7 @@ void LLAgentCamera::switchCameraPreset(ECameraPreset preset)
     mCameraZoomFraction = 1.f;
 
     //focusing on avatar in that case means following him on movements
-    mFocusOnAvatar = TRUE;
+    mFocusOnAvatar = true;
 
     mCameraPreset = preset;
 
@@ -2491,7 +2490,7 @@ void LLAgentCamera::startCameraAnimation()
     mAnimationFocusStartGlobal = mFocusGlobal;
     setAnimationDuration(gSavedSettings.getF32("ZoomTime"));
     mAnimationTimer.reset();
-    mCameraAnimating = TRUE;
+    mCameraAnimating = true;
 }
 
 //-----------------------------------------------------------------------------
@@ -2499,7 +2498,7 @@ void LLAgentCamera::startCameraAnimation()
 //-----------------------------------------------------------------------------
 void LLAgentCamera::stopCameraAnimation()
 {
-    mCameraAnimating = FALSE;
+    mCameraAnimating = false;
 }
 
 void LLAgentCamera::clearFocusObject()
@@ -2679,7 +2678,7 @@ void LLAgentCamera::setCameraPosAndFocusGlobal(const LLVector3d& camera_pos, con
 //-----------------------------------------------------------------------------
 void LLAgentCamera::setSitCamera(const LLUUID &object_id, const LLVector3 &camera_pos, const LLVector3 &camera_focus)
 {
-    BOOL camera_enabled = !object_id.isNull();
+    bool camera_enabled = !object_id.isNull();
 
     if (camera_enabled)
     {
@@ -2690,7 +2689,7 @@ void LLAgentCamera::setSitCamera(const LLUUID &object_id, const LLVector3 &camer
             mSitCameraPos = camera_pos;
             mSitCameraFocus = camera_focus;
             mSitCameraReferenceObject = reference_object;
-            mSitCameraEnabled = TRUE;
+            mSitCameraEnabled = true;
         }
     }
     else
@@ -2698,14 +2697,14 @@ void LLAgentCamera::setSitCamera(const LLUUID &object_id, const LLVector3 &camer
         mSitCameraPos.clearVec();
         mSitCameraFocus.clearVec();
         mSitCameraReferenceObject = NULL;
-        mSitCameraEnabled = FALSE;
+        mSitCameraEnabled = false;
     }
 }
 
 //-----------------------------------------------------------------------------
 // setFocusOnAvatar()
 //-----------------------------------------------------------------------------
-void LLAgentCamera::setFocusOnAvatar(BOOL focus_on_avatar, BOOL animate, BOOL reset_axes)
+void LLAgentCamera::setFocusOnAvatar(bool focus_on_avatar, bool animate, bool reset_axes)
 {
     if (focus_on_avatar != mFocusOnAvatar)
     {
@@ -2752,14 +2751,14 @@ void LLAgentCamera::setFocusOnAvatar(BOOL focus_on_avatar, BOOL animate, BOOL re
     {
         // keep camera focus point consistent, even though it is now unlocked
         setFocusGlobal(gAgent.getPositionGlobal() + calcThirdPersonFocusOffset(), gAgent.getID());
-        mAllowChangeToFollow = FALSE;
+        mAllowChangeToFollow = false;
     }
 
     mFocusOnAvatar = focus_on_avatar;
 }
 
 
-BOOL LLAgentCamera::setLookAt(ELookAtType target_type, LLViewerObject *object, LLVector3 position)
+bool LLAgentCamera::setLookAt(ELookAtType target_type, LLViewerObject *object, LLVector3 position)
 {
     if(object && object->isAttachment())
     {
@@ -2828,7 +2827,7 @@ void LLAgentCamera::lookAtLastChat()
         new_camera_pos += left * 0.3f;
         new_camera_pos += up * 0.2f;
 
-        setFocusOnAvatar(FALSE, FALSE);
+        setFocusOnAvatar(false, false);
 
         if (chatter_av->mHeadp)
         {
@@ -2859,7 +2858,7 @@ void LLAgentCamera::lookAtLastChat()
         new_camera_pos += left * 0.3f;
         new_camera_pos += up * 0.2f;
 
-        setFocusOnAvatar(FALSE, FALSE);
+        setFocusOnAvatar(false, false);
 
         setFocusGlobal(chatter->getPositionGlobal(), gAgent.getLastChatter());
         mCameraFocusOffsetTarget = gAgent.getPosGlobalFromAgent(new_camera_pos) - chatter->getPositionGlobal();
@@ -2871,12 +2870,12 @@ bool LLAgentCamera::isfollowCamLocked()
     return mFollowCam.getPositionLocked();
 }
 
-BOOL LLAgentCamera::setPointAt(EPointAtType target_type, LLViewerObject *object, LLVector3 position)
+bool LLAgentCamera::setPointAt(EPointAtType target_type, LLViewerObject *object, LLVector3 position)
 {
     // disallow pointing at attachments and avatars
     if (object && (object->isAttachment() || object->isAvatar()))
     {
-        return FALSE;
+        return false;
     }
     if (!mPointAt || mPointAt->isDead())
     {
diff --git a/indra/newview/llagentcamera.h b/indra/newview/llagentcamera.h
index 4a9e5efadf..52571f3c55 100644
--- a/indra/newview/llagentcamera.h
+++ b/indra/newview/llagentcamera.h
@@ -89,14 +89,14 @@ private:
     //--------------------------------------------------------------------
 public:
     void            changeCameraToDefault();
-    void            changeCameraToMouselook(BOOL animate = TRUE);
-    void            changeCameraToThirdPerson(BOOL animate = TRUE);
+    void            changeCameraToMouselook(bool animate = true);
+    void            changeCameraToThirdPerson(bool animate = true);
     void            changeCameraToCustomizeAvatar(); // Trigger transition animation
-    void            changeCameraToFollow(BOOL animate = TRUE);  // Ventrella
-    BOOL            cameraThirdPerson() const       { return (mCameraMode == CAMERA_MODE_THIRD_PERSON && mLastCameraMode == CAMERA_MODE_THIRD_PERSON); }
-    BOOL            cameraMouselook() const         { return (mCameraMode == CAMERA_MODE_MOUSELOOK && mLastCameraMode == CAMERA_MODE_MOUSELOOK); }
-    BOOL            cameraCustomizeAvatar() const   { return (mCameraMode == CAMERA_MODE_CUSTOMIZE_AVATAR /*&& !mCameraAnimating*/); }
-    BOOL            cameraFollow() const            { return (mCameraMode == CAMERA_MODE_FOLLOW && mLastCameraMode == CAMERA_MODE_FOLLOW); }
+    void            changeCameraToFollow(bool animate = true);  // Ventrella
+    bool            cameraThirdPerson() const       { return (mCameraMode == CAMERA_MODE_THIRD_PERSON && mLastCameraMode == CAMERA_MODE_THIRD_PERSON); }
+    bool            cameraMouselook() const         { return (mCameraMode == CAMERA_MODE_MOUSELOOK && mLastCameraMode == CAMERA_MODE_MOUSELOOK); }
+    bool            cameraCustomizeAvatar() const   { return (mCameraMode == CAMERA_MODE_CUSTOMIZE_AVATAR /*&& !mCameraAnimating*/); }
+    bool            cameraFollow() const            { return (mCameraMode == CAMERA_MODE_FOLLOW && mLastCameraMode == CAMERA_MODE_FOLLOW); }
     ECameraMode     getCameraMode() const           { return mCameraMode; }
     ECameraMode     getLastCameraMode() const       { return mLastCameraMode; }
     void            updateCamera();                 // Call once per frame to update camera location/orientation
@@ -139,10 +139,10 @@ private:
 public:
     LLVector3d      getCameraPositionGlobal() const;
     const LLVector3 &getCameraPositionAgent() const;
-    LLVector3d      calcCameraPositionTargetGlobal(BOOL *hit_limit = NULL); // Calculate the camera position target
+    LLVector3d      calcCameraPositionTargetGlobal(bool *hit_limit = NULL); // Calculate the camera position target
     F32             getCameraMinOffGround();        // Minimum height off ground for this mode, meters
     void            setCameraCollidePlane(const LLVector4 &plane) { mCameraCollidePlane = plane; }
-    BOOL            calcCameraMinDistance(F32 &obj_min_distance);
+    bool            calcCameraMinDistance(F32 &obj_min_distance);
     F32             getCurrentCameraBuildOffset()   { return (F32)mCameraFocusOffset.length(); }
     void            clearCameraLag() { mCameraLag.clearVec(); }
 private:
@@ -175,12 +175,12 @@ private:
     //--------------------------------------------------------------------
 public:
     void            setupSitCamera();
-    BOOL            sitCameraEnabled()      { return mSitCameraEnabled; }
+    bool            sitCameraEnabled()      { return mSitCameraEnabled; }
     void            setSitCamera(const LLUUID &object_id,
                                  const LLVector3 &camera_pos = LLVector3::zero, const LLVector3 &camera_focus = LLVector3::zero);
 private:
     LLPointer<LLViewerObject> mSitCameraReferenceObject; // Object to which camera is related when sitting
-    BOOL            mSitCameraEnabled;      // Use provided camera information when sitting?
+    bool            mSitCameraEnabled;      // Use provided camera information when sitting?
     LLVector3       mSitCameraPos;          // Root relative camera pos when sitting
     LLVector3       mSitCameraFocus;        // Root relative camera target when sitting
 
@@ -188,15 +188,15 @@ private:
     // Animation
     //--------------------------------------------------------------------
 public:
-    void            setCameraAnimating(BOOL b)          { mCameraAnimating = b; }
-    BOOL            getCameraAnimating()                { return mCameraAnimating; }
+    void            setCameraAnimating(bool b)          { mCameraAnimating = b; }
+    bool            getCameraAnimating()                { return mCameraAnimating; }
     void            setAnimationDuration(F32 seconds);
     void            startCameraAnimation();
     void            stopCameraAnimation();
 private:
     LLFrameTimer    mAnimationTimer;    // Seconds that transition animation has been active
     F32             mAnimationDuration; // In seconds
-    BOOL            mCameraAnimating;                   // Camera is transitioning from one mode to another
+    bool            mCameraAnimating;                   // Camera is transitioning from one mode to another
     LLVector3d      mAnimationCameraStartGlobal;        // Camera start position, global coords
     LLVector3d      mAnimationFocusStartGlobal;         // Camera focus point, global coords
 
@@ -206,43 +206,43 @@ private:
 public:
     LLVector3d      calcFocusPositionTargetGlobal();
     LLVector3       calcFocusOffset(LLViewerObject *object, LLVector3 pos_agent, S32 x, S32 y);
-    BOOL            getFocusOnAvatar() const        { return mFocusOnAvatar; }
+    bool            getFocusOnAvatar() const        { return mFocusOnAvatar; }
     LLPointer<LLViewerObject>&  getFocusObject()    { return mFocusObject; }
     F32             getFocusObjectDist() const      { return mFocusObjectDist; }
     void            updateFocusOffset();
     void            validateFocusObject();
     void            setFocusGlobal(const LLPickInfo& pick);
     void            setFocusGlobal(const LLVector3d &focus, const LLUUID &object_id = LLUUID::null);
-    void            setFocusOnAvatar(BOOL focus, BOOL animate, BOOL reset_axes = TRUE);
+    void            setFocusOnAvatar(bool focus, bool animate, bool reset_axes = true);
     void            setCameraPosAndFocusGlobal(const LLVector3d& pos, const LLVector3d& focus, const LLUUID &object_id);
     void            clearFocusObject();
     void            setFocusObject(LLViewerObject* object);
-    void            setAllowChangeToFollow(BOOL focus)  { mAllowChangeToFollow = focus; }
-    void            setObjectTracking(BOOL track)   { mTrackFocusObject = track; }
+    void            setAllowChangeToFollow(bool focus)  { mAllowChangeToFollow = focus; }
+    void            setObjectTracking(bool track)   { mTrackFocusObject = track; }
     const LLVector3d &getFocusGlobal() const        { return mFocusGlobal; }
     const LLVector3d &getFocusTargetGlobal() const  { return mFocusTargetGlobal; }
 private:
     LLVector3d      mCameraFocusOffset;             // Offset from focus point in build mode
     LLVector3d      mCameraFocusOffsetTarget;       // Target towards which we are lerping the camera's focus offset
-    BOOL            mFocusOnAvatar;
-    BOOL            mAllowChangeToFollow;
+    bool            mFocusOnAvatar;
+    bool            mAllowChangeToFollow;
     LLVector3d      mFocusGlobal;
     LLVector3d      mFocusTargetGlobal;
     LLPointer<LLViewerObject> mFocusObject;
     F32             mFocusObjectDist;
     LLVector3       mFocusObjectOffset;
-    BOOL            mTrackFocusObject;
+    bool            mTrackFocusObject;
 
     //--------------------------------------------------------------------
     // Lookat / Pointat
     //--------------------------------------------------------------------
 public:
     void            updateLookAt(const S32 mouse_x, const S32 mouse_y);
-    BOOL            setLookAt(ELookAtType target_type, LLViewerObject *object = NULL, LLVector3 position = LLVector3::zero);
+    bool            setLookAt(ELookAtType target_type, LLViewerObject *object = NULL, LLVector3 position = LLVector3::zero);
     ELookAtType     getLookAtType();
     void            lookAtLastChat();
     void            slamLookAt(const LLVector3 &look_at); // Set the physics data
-    BOOL            setPointAt(EPointAtType target_type, LLViewerObject *object = NULL, LLVector3 position = LLVector3::zero);
+    bool            setPointAt(EPointAtType target_type, LLViewerObject *object = NULL, LLVector3 position = LLVector3::zero);
     EPointAtType    getPointAtType();
 public:
     LLPointer<LLHUDEffectLookAt> mLookAt;
@@ -294,7 +294,7 @@ public:
     //--------------------------------------------------------------------
 public:
     // Called whenever the agent moves.  Puts camera back in default position, deselects items, etc.
-    void            resetView(BOOL reset_camera = TRUE, BOOL change_camera = FALSE);
+    void            resetView(bool reset_camera = true, bool change_camera = false);
     // Called on camera movement.  Unlocks camera from the default position behind the avatar.
     void            unlockView();
 public:
@@ -304,10 +304,10 @@ public:
     // Mouselook
     //--------------------------------------------------------------------
 public:
-    BOOL            getForceMouselook() const           { return mForceMouselook; }
-    void            setForceMouselook(BOOL mouselook)   { mForceMouselook = mouselook; }
+    bool            getForceMouselook() const           { return mForceMouselook; }
+    void            setForceMouselook(bool mouselook)   { mForceMouselook = mouselook; }
 private:
-    BOOL            mForceMouselook;
+    bool            mForceMouselook;
 
     //--------------------------------------------------------------------
     // HUD
diff --git a/indra/newview/llagentlanguage.cpp b/indra/newview/llagentlanguage.cpp
index caf5950e53..3a29b85783 100644
--- a/indra/newview/llagentlanguage.cpp
+++ b/indra/newview/llagentlanguage.cpp
@@ -48,7 +48,7 @@ void LLAgentLanguage::onChange()
 {
     // Clear inventory cache so that default names of inventory items
     // appear retranslated (EXT-8308).
-    gSavedSettings.setBOOL("PurgeCacheOnNextStartup", TRUE);
+    gSavedSettings.setBOOL("PurgeCacheOnNextStartup", true);
 }
 
 // send language settings to the sim
diff --git a/indra/newview/llagentlistener.cpp b/indra/newview/llagentlistener.cpp
index 54998f3945..005a518910 100644
--- a/indra/newview/llagentlistener.cpp
+++ b/indra/newview/llagentlistener.cpp
@@ -347,10 +347,10 @@ void LLAgentListener::startAutoPilot(LLSD const & event_data)
         rotation_threshold = event_data["rotation_threshold"].asReal();
     }
 
-    BOOL allow_flying = TRUE;
+    bool allow_flying = true;
     if (event_data.has("allow_flying"))
     {
-        allow_flying = (BOOL) event_data["allow_flying"].asBoolean();
+        allow_flying = (bool) event_data["allow_flying"].asBoolean();
         mAgent.setFlying(allow_flying);
     }
 
@@ -411,10 +411,10 @@ void LLAgentListener::startFollowPilot(LLSD const & event_data)
 {
     LLUUID target_id;
 
-    BOOL allow_flying = TRUE;
+    bool allow_flying = true;
     if (event_data.has("allow_flying"))
     {
-        allow_flying = (BOOL) event_data["allow_flying"].asBoolean();
+        allow_flying = (bool) event_data["allow_flying"].asBoolean();
     }
 
     if (event_data.has("leader_id"))
@@ -469,7 +469,7 @@ void LLAgentListener::setAutoPilotTarget(LLSD const & event_data) const
 
 void LLAgentListener::stopAutoPilot(LLSD const & event_data) const
 {
-    BOOL user_cancel = FALSE;
+    bool user_cancel = false;
     if (event_data.has("user_cancel"))
     {
         user_cancel = event_data["user_cancel"].asBoolean();
diff --git a/indra/newview/llagentpicksinfo.cpp b/indra/newview/llagentpicksinfo.cpp
index 17464dcef9..e2a2d2d8a9 100644
--- a/indra/newview/llagentpicksinfo.cpp
+++ b/indra/newview/llagentpicksinfo.cpp
@@ -123,5 +123,5 @@ void LLAgentPicksInfo::onServerRespond(LLAvatarData* picks)
         return;
     }
 
-    setNumberOfPicks(picks->picks_list.size());
+    setNumberOfPicks(static_cast<S32>(picks->picks_list.size()));
 }
diff --git a/indra/newview/llagentpicksinfo.h b/indra/newview/llagentpicksinfo.h
index edd41d8746..9bc105a655 100644
--- a/indra/newview/llagentpicksinfo.h
+++ b/indra/newview/llagentpicksinfo.h
@@ -60,7 +60,7 @@ public:
     S32 getMaxNumberOfPicks() { return mMaxNumberOfPicks; }
 
     /**
-     * Returns TRUE if Agent has maximum allowed number of Picks.
+     * Returns true if Agent has maximum allowed number of Picks.
      */
     bool isPickLimitReached();
 
diff --git a/indra/newview/llagentpilot.cpp b/indra/newview/llagentpilot.cpp
index ecb705ec2d..40f1679663 100644
--- a/indra/newview/llagentpilot.cpp
+++ b/indra/newview/llagentpilot.cpp
@@ -42,15 +42,15 @@ LLAgentPilot gAgentPilot;
 
 LLAgentPilot::LLAgentPilot() :
     mNumRuns(-1),
-    mQuitAfterRuns(FALSE),
-    mRecording(FALSE),
+    mQuitAfterRuns(false),
+    mRecording(false),
     mLastRecordTime(0.f),
-    mStarted(FALSE),
-    mPlaying(FALSE),
+    mStarted(false),
+    mPlaying(false),
     mCurrentAction(0),
-    mOverrideCamera(FALSE),
-    mLoop(TRUE),
-    mReplaySession(FALSE)
+    mOverrideCamera(false),
+    mLoop(true),
+    mReplaySession(false)
 {
 }
 
@@ -221,14 +221,14 @@ void LLAgentPilot::startRecord()
     mActions.clear();
     mTimer.reset();
     addAction(STRAIGHT);
-    mRecording = TRUE;
+    mRecording = true;
 }
 
 void LLAgentPilot::stopRecord()
 {
     gAgentPilot.addAction(STRAIGHT);
     gAgentPilot.save();
-    mRecording = FALSE;
+    mRecording = false;
 }
 
 void LLAgentPilot::addAction(enum EActionType action_type)
@@ -252,7 +252,7 @@ void LLAgentPilot::startPlayback()
 {
     if (!mPlaying)
     {
-        mPlaying = TRUE;
+        mPlaying = true;
         mCurrentAction = 0;
         mTimer.reset();
 
@@ -261,12 +261,12 @@ void LLAgentPilot::startPlayback()
             LL_INFOS() << "Starting playback, moving to waypoint 0" << LL_ENDL;
             gAgent.startAutoPilotGlobal(mActions[0].mTarget);
             moveCamera();
-            mStarted = FALSE;
+            mStarted = false;
         }
         else
         {
             LL_INFOS() << "No autopilot data, cancelling!" << LL_ENDL;
-            mPlaying = FALSE;
+            mPlaying = false;
         }
     }
 }
@@ -275,7 +275,7 @@ void LLAgentPilot::stopPlayback()
 {
     if (mPlaying)
     {
-        mPlaying = FALSE;
+        mPlaying = false;
         mCurrentAction = 0;
         mTimer.reset();
         gAgent.stopAutoPilot();
@@ -347,7 +347,7 @@ void LLAgentPilot::updateTarget()
                     {
                         LL_INFOS() << "At start, beginning playback" << LL_ENDL;
                         mTimer.reset();
-                        mStarted = TRUE;
+                        mStarted = true;
                     }
                 }
             }
diff --git a/indra/newview/llagentpilot.h b/indra/newview/llagentpilot.h
index 42ca716511..eff38d2468 100644
--- a/indra/newview/llagentpilot.h
+++ b/indra/newview/llagentpilot.h
@@ -68,35 +68,35 @@ public:
     void addWaypoint();
     void moveCamera();
 
-    void setReplaySession(BOOL new_val) { mReplaySession = new_val; }
-    BOOL getReplaySession() { return mReplaySession; }
+    void setReplaySession(bool new_val) { mReplaySession = new_val; }
+    bool getReplaySession() { return mReplaySession; }
 
-    void setLoop(BOOL new_val) { mLoop = new_val; }
-    BOOL getLoop() { return mLoop; }
+    void setLoop(bool new_val) { mLoop = new_val; }
+    bool getLoop() { return mLoop; }
 
-    void setQuitAfterRuns(BOOL quit_val) { mQuitAfterRuns = quit_val; }
+    void setQuitAfterRuns(bool quit_val) { mQuitAfterRuns = quit_val; }
     void setNumRuns(S32 num_runs) { mNumRuns = num_runs; }
 
 private:
 
 
 
-    BOOL    mLoop;
-    BOOL    mReplaySession;
+    bool    mLoop;
+    bool    mReplaySession;
 
     S32     mNumRuns;
-    BOOL    mQuitAfterRuns;
+    bool    mQuitAfterRuns;
 
     void setAutopilotTarget(const S32 id);
 
-    BOOL    mRecording;
+    bool    mRecording;
     F32     mLastRecordTime;
 
-    BOOL    mStarted;
-    BOOL    mPlaying;
+    bool    mStarted;
+    bool    mPlaying;
     S32     mCurrentAction;
 
-    BOOL    mOverrideCamera;
+    bool    mOverrideCamera;
 
     class Action
     {
diff --git a/indra/newview/llagentui.cpp b/indra/newview/llagentui.cpp
index 6657ed9857..81a3942d8a 100644
--- a/indra/newview/llagentui.cpp
+++ b/indra/newview/llagentui.cpp
@@ -68,19 +68,19 @@ void LLAgentUI::buildSLURL(LLSLURL& slurl, const bool escaped /*= true*/)
 }
 
 //static
-BOOL LLAgentUI::checkAgentDistance(const LLVector3& pole, F32 radius)
+bool LLAgentUI::checkAgentDistance(const LLVector3& pole, F32 radius)
 {
     F32 delta_x = gAgent.getPositionAgent().mV[VX] - pole.mV[VX];
     F32 delta_y = gAgent.getPositionAgent().mV[VY] - pole.mV[VY];
 
     return  sqrt( delta_x* delta_x + delta_y* delta_y ) < radius;
 }
-BOOL LLAgentUI::buildLocationString(std::string& str, ELocationFormat fmt,const LLVector3& agent_pos_region)
+bool LLAgentUI::buildLocationString(std::string& str, ELocationFormat fmt,const LLVector3& agent_pos_region)
 {
     LLViewerRegion* region = gAgent.getRegion();
     LLParcel* parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
 
-    if (!region || !parcel) return FALSE;
+    if (!region || !parcel) return false;
 
     S32 pos_x = S32(agent_pos_region.mV[VX] + 0.5f);
     S32 pos_y = S32(agent_pos_region.mV[VY] + 0.5f);
@@ -186,9 +186,9 @@ BOOL LLAgentUI::buildLocationString(std::string& str, ELocationFormat fmt,const
         }
     }
     str = buffer;
-    return TRUE;
+    return true;
 }
-BOOL LLAgentUI::buildLocationString(std::string& str, ELocationFormat fmt)
+bool LLAgentUI::buildLocationString(std::string& str, ELocationFormat fmt)
 {
     return buildLocationString(str,fmt, gAgent.getPositionAgent());
 }
diff --git a/indra/newview/llagentui.h b/indra/newview/llagentui.h
index cbf5a095db..aae55d6444 100644
--- a/indra/newview/llagentui.h
+++ b/indra/newview/llagentui.h
@@ -46,14 +46,14 @@ public:
 
     static void buildSLURL(LLSLURL& slurl, const bool escaped = true);
     //build location string using the current position of gAgent.
-    static BOOL buildLocationString(std::string& str, ELocationFormat fmt = LOCATION_FORMAT_LANDMARK);
+    static bool buildLocationString(std::string& str, ELocationFormat fmt = LOCATION_FORMAT_LANDMARK);
     //build location string using a region position of the avatar.
-    static BOOL buildLocationString(std::string& str, ELocationFormat fmt,const LLVector3& agent_pos_region);
+    static bool buildLocationString(std::string& str, ELocationFormat fmt,const LLVector3& agent_pos_region);
     /**
      * @brief Check whether  the agent is in neighborhood of the pole  Within same region
      * @return true if the agent is in neighborhood.
      */
-    static BOOL checkAgentDistance(const LLVector3& local_pole, F32 radius);
+    static bool checkAgentDistance(const LLVector3& local_pole, F32 radius);
 };
 
 #endif //LLAGENTUI_H
diff --git a/indra/newview/llagentwearables.cpp b/indra/newview/llagentwearables.cpp
index d2046c0f83..faa5d801dd 100644
--- a/indra/newview/llagentwearables.cpp
+++ b/indra/newview/llagentwearables.cpp
@@ -56,7 +56,7 @@
 
 LLAgentWearables gAgentWearables;
 
-BOOL LLAgentWearables::mInitialWearablesUpdateReceived = FALSE;
+bool LLAgentWearables::mInitialWearablesUpdateReceived = false;
 
 using namespace LLAvatarAppearanceDefines;
 
@@ -76,7 +76,7 @@ void set_default_permissions(LLViewerInventoryItem* item)
 
         item->setPermissions(perm);
 
-        item->updateServer(FALSE);
+        item->updateServer(false);
     }
 }
 
@@ -194,7 +194,7 @@ struct LLAgentDumper
 
 LLAgentWearables::LLAgentWearables() :
     LLWearableData(),
-    mWearablesLoaded(FALSE)
+    mWearablesLoaded(false)
 ,   mCOFChangeInProgress(false)
 {
 }
@@ -304,7 +304,7 @@ void LLAgentWearables::addWearabletoAgentInventoryDone(const LLWearableType::ETy
         item->setAssetUUID(wearable->getAssetID());
         item->setTransactionID(wearable->getTransactionID());
         gInventory.addChangedMask(LLInventoryObserver::INTERNAL, item_id);
-        item->updateServer(FALSE);
+        item->updateServer(false);
     }
     gInventory.notifyObservers();
 }
@@ -375,7 +375,7 @@ void LLAgentWearables::saveWearableAs(const LLWearableType::EType type,
                                       const U32 index,
                                       const std::string& new_name,
                                       const std::string& description,
-                                      BOOL save_in_lost_and_found)
+                                      bool save_in_lost_and_found)
 {
     if (!isWearableCopyable(type, index))
     {
@@ -493,13 +493,13 @@ void LLAgentWearables::setWearableName(const LLUUID& item_id, const std::string&
 }
 
 
-BOOL LLAgentWearables::isWearableModifiable(LLWearableType::EType type, U32 index) const
+bool LLAgentWearables::isWearableModifiable(LLWearableType::EType type, U32 index) const
 {
     LLUUID item_id = getWearableItemID(type, index);
-    return item_id.notNull() ? isWearableModifiable(item_id) : FALSE;
+    return item_id.notNull() ? isWearableModifiable(item_id) : false;
 }
 
-BOOL LLAgentWearables::isWearableModifiable(const LLUUID& item_id) const
+bool LLAgentWearables::isWearableModifiable(const LLUUID& item_id) const
 {
     const LLUUID& linked_id = gInventory.getLinkedItemID(item_id);
     if (linked_id.notNull())
@@ -508,13 +508,13 @@ BOOL LLAgentWearables::isWearableModifiable(const LLUUID& item_id) const
         if (item && item->getPermissions().allowModifyBy(gAgent.getID(),
                                                          gAgent.getGroupID()))
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLAgentWearables::isWearableCopyable(LLWearableType::EType type, U32 index) const
+bool LLAgentWearables::isWearableCopyable(LLWearableType::EType type, U32 index) const
 {
     LLUUID item_id = getWearableItemID(type, index);
     if (!item_id.isNull())
@@ -523,27 +523,11 @@ BOOL LLAgentWearables::isWearableCopyable(LLWearableType::EType type, U32 index)
         if (item && item->getPermissions().allowCopyBy(gAgent.getID(),
                                                        gAgent.getGroupID()))
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
-}
-
-/*
-  U32 LLAgentWearables::getWearablePermMask(LLWearableType::EType type)
-  {
-  LLUUID item_id = getWearableItemID(type);
-  if (!item_id.isNull())
-  {
-  LLInventoryItem* item = gInventory.getItem(item_id);
-  if (item)
-  {
-  return item->getPermissions().getMaskOwner();
-  }
-  }
-  return PERM_NONE;
-  }
-*/
+    return false;
+}
 
 LLInventoryItem* LLAgentWearables::getWearableInventoryItem(LLWearableType::EType type, U32 index)
 {
@@ -617,13 +601,13 @@ const LLViewerWearable* LLAgentWearables::getViewerWearable(const LLWearableType
 }
 
 // static
-BOOL LLAgentWearables::selfHasWearable(LLWearableType::EType type)
+bool LLAgentWearables::selfHasWearable(LLWearableType::EType type)
 {
     return (gAgentWearables.getWearableCount(type) > 0);
 }
 
 // virtual
-void LLAgentWearables::wearableUpdated(LLWearable *wearable, BOOL removed)
+void LLAgentWearables::wearableUpdated(LLWearable *wearable, bool removed)
 {
     if (isAgentAvatarValid())
     {
@@ -675,9 +659,9 @@ const LLUUID LLAgentWearables::getWearableAssetID(LLWearableType::EType type, U3
         return LLUUID();
 }
 
-BOOL LLAgentWearables::isWearingItem(const LLUUID& item_id) const
+bool LLAgentWearables::isWearingItem(const LLUUID& item_id) const
 {
-    return getWearableFromItemID(item_id) != NULL;
+    return getWearableFromItemID(item_id) != nullptr;
 }
 
 void LLAgentWearables::addLocalTextureObject(const LLWearableType::EType wearable_type, const LLAvatarAppearanceDefines::ETextureIndex texture_type, U32 wearable_index)
@@ -772,21 +756,21 @@ void LLAgentWearables::createStandardWearables()
 
     if (!isAgentAvatarValid()) return;
 
-    const BOOL create[LLWearableType::WT_COUNT] =
+    constexpr bool create[LLWearableType::WT_COUNT] =
         {
-            TRUE,  //LLWearableType::WT_SHAPE
-            TRUE,  //LLWearableType::WT_SKIN
-            TRUE,  //LLWearableType::WT_HAIR
-            TRUE,  //LLWearableType::WT_EYES
-            TRUE,  //LLWearableType::WT_SHIRT
-            TRUE,  //LLWearableType::WT_PANTS
-            TRUE,  //LLWearableType::WT_SHOES
-            TRUE,  //LLWearableType::WT_SOCKS
-            FALSE, //LLWearableType::WT_JACKET
-            FALSE, //LLWearableType::WT_GLOVES
-            TRUE,  //LLWearableType::WT_UNDERSHIRT
-            TRUE,  //LLWearableType::WT_UNDERPANTS
-            FALSE  //LLWearableType::WT_SKIRT
+            true,  //LLWearableType::WT_SHAPE
+            true,  //LLWearableType::WT_SKIN
+            true,  //LLWearableType::WT_HAIR
+            true,  //LLWearableType::WT_EYES
+            true,  //LLWearableType::WT_SHIRT
+            true,  //LLWearableType::WT_PANTS
+            true,  //LLWearableType::WT_SHOES
+            true,  //LLWearableType::WT_SOCKS
+            false, //LLWearableType::WT_JACKET
+            false, //LLWearableType::WT_GLOVES
+            true,  //LLWearableType::WT_UNDERSHIRT
+            true,  //LLWearableType::WT_UNDERPANTS
+            false  //LLWearableType::WT_SKIRT
         };
 
     LLPointer<LLInventoryCallback> cb = new OnWearableItemCreatedCB;
@@ -865,7 +849,7 @@ void LLAgentWearables::makeNewOutfitDone(S32 type, U32 index)
 void LLAgentWearables::addWearableToAgentInventory(LLPointer<LLInventoryCallback> cb,
                                                    LLViewerWearable* wearable,
                                                    const LLUUID& category_id,
-                                                   BOOL notify)
+                                                   bool notify)
 {
     create_inventory_wearable(gAgent.getID(),
                           gAgent.getSessionID(),
@@ -980,16 +964,16 @@ void LLAgentWearables::setWearableOutfit(const LLInventoryItem::item_array_t& it
 {
     LL_INFOS() << "setWearableOutfit() start" << LL_ENDL;
 
-    S32 count = wearables.size();
+    auto count = wearables.size();
     llassert(items.size() == count);
 
     // Check for whether outfit already matches the one requested
     S32 matched = 0, mismatched = 0;
     const S32 arr_size = LLWearableType::WT_COUNT;
     S32 type_counts[arr_size];
-    BOOL update_inventory = FALSE;
+    bool update_inventory{ false };
     std::fill(type_counts,type_counts+arr_size,0);
-    for (S32 i = 0; i < count; i++)
+    for (size_t i = 0; i < count; i++)
     {
         LLViewerWearable* new_wearable = wearables[i];
         LLPointer<LLInventoryItem> new_item = items[i];
@@ -1025,7 +1009,7 @@ void LLAgentWearables::setWearableOutfit(const LLInventoryItem::item_array_t& it
                                 << curr_wearable->getName() << " vs " << new_item->getName()
                                 << " item ids " << curr_wearable->getItemID() << " vs " << new_item->getUUID()
                                 << LL_ENDL;
-            update_inventory = TRUE;
+            update_inventory = true;
             continue;
         }
         // If we got here, everything matches.
@@ -1092,7 +1076,7 @@ void LLAgentWearables::setWearableOutfit(const LLInventoryItem::item_array_t& it
                 pushWearable(type,new_wearable);
             }
 
-            const BOOL removed = FALSE;
+            constexpr bool removed = false;
             wearableUpdated(new_wearable, removed);
         }
     }
@@ -1110,7 +1094,7 @@ void LLAgentWearables::setWearableOutfit(const LLInventoryItem::item_array_t& it
 
     if (isAgentAvatarValid())
     {
-        gAgentAvatarp->setCompositeUpdatesEnabled(TRUE);
+        gAgentAvatarp->setCompositeUpdatesEnabled(true);
 
         // If we have not yet declouded, we may want to use
         // baked texture UUIDs sent from the first objectUpdate message
@@ -1124,7 +1108,7 @@ void LLAgentWearables::setWearableOutfit(const LLInventoryItem::item_array_t& it
     }
 
     // Start rendering & update the server
-    mWearablesLoaded = TRUE;
+    mWearablesLoaded = true;
 
     notifyLoadingFinished();
 
@@ -1423,7 +1407,7 @@ void LLAgentWearables::userRemoveMultipleAttachments(llvo_vec_t& objects_to_remo
 void LLAgentWearables::userAttachMultipleAttachments(LLInventoryModel::item_array_t& obj_item_array)
 {
     // Build a compound message to send all the objects that need to be rezzed.
-    S32 obj_count = obj_item_array.size();
+    auto obj_count = obj_item_array.size();
     if (obj_count > 0)
     {
         LL_DEBUGS("Avatar") << "ATT attaching multiple, total obj_count " << obj_count << LL_ENDL;
@@ -1434,7 +1418,7 @@ void LLAgentWearables::userAttachMultipleAttachments(LLInventoryModel::item_arra
         ++it)
     {
         const LLInventoryItem* item = *it;
-        LLAttachmentsMgr::instance().addAttachmentRequest(item->getLinkedUUID(), 0, TRUE);
+        LLAttachmentsMgr::instance().addAttachmentRequest(item->getLinkedUUID(), 0, true);
     }
 }
 
@@ -1452,7 +1436,7 @@ bool LLAgentWearables::canMoveWearable(const LLUUID& item_id, bool closer_to_bod
     return wearable != marginal_wearable;
 }
 
-BOOL LLAgentWearables::areWearablesLoaded() const
+bool LLAgentWearables::areWearablesLoaded() const
 {
     return mWearablesLoaded;
 }
@@ -1620,7 +1604,7 @@ void LLAgentWearables::editWearable(const LLUUID& item_id)
         return;
     }
 
-    const BOOL disable_camera_switch = LLWearableType::getInstance()->getDisableCameraSwitch(wearable->getType());
+    const bool disable_camera_switch = LLWearableType::getInstance()->getDisableCameraSwitch(wearable->getType());
     LLPanel* panel = LLFloaterSidePanelContainer::getPanel("appearance");
     LLSidepanelAppearance::editWearable(wearable, panel, disable_camera_switch);
 }
diff --git a/indra/newview/llagentwearables.h b/indra/newview/llagentwearables.h
index de3d91b87c..3b8ff93c76 100644
--- a/indra/newview/llagentwearables.h
+++ b/indra/newview/llagentwearables.h
@@ -66,16 +66,14 @@ public:
     // Queries
     //--------------------------------------------------------------------
 public:
-    BOOL            isWearingItem(const LLUUID& item_id) const;
-    BOOL            isWearableModifiable(LLWearableType::EType type, U32 index /*= 0*/) const;
-    BOOL            isWearableModifiable(const LLUUID& item_id) const;
+    bool            isWearingItem(const LLUUID& item_id) const;
+    bool            isWearableModifiable(LLWearableType::EType type, U32 index /*= 0*/) const;
+    bool            isWearableModifiable(const LLUUID& item_id) const;
 
-    BOOL            isWearableCopyable(LLWearableType::EType type, U32 index /*= 0*/) const;
-    BOOL            areWearablesLoaded() const;
+    bool            isWearableCopyable(LLWearableType::EType type, U32 index /*= 0*/) const;
+    bool            areWearablesLoaded() const;
     bool            isCOFChangeInProgress() const { return mCOFChangeInProgress; }
     F32             getCOFChangeTime() const { return mCOFChangeTimer.getElapsedTimeF32(); }
-    void            updateWearablesLoaded();
-    void            checkWearablesLoaded() const;
     bool            canMoveWearable(const LLUUID& item_id, bool closer_to_body) const;
 
     // Note: False for shape, skin, eyes, and hair, unless you have MORE than 1.
@@ -95,13 +93,13 @@ public:
     LLViewerWearable*       getViewerWearable(const LLWearableType::EType type, U32 index /*= 0*/);
     const LLViewerWearable* getViewerWearable(const LLWearableType::EType type, U32 index /*= 0*/) const;
     LLInventoryItem*    getWearableInventoryItem(LLWearableType::EType type, U32 index /*= 0*/);
-    static BOOL         selfHasWearable(LLWearableType::EType type);
+    static bool         selfHasWearable(LLWearableType::EType type);
 
     //--------------------------------------------------------------------
     // Setters
     //--------------------------------------------------------------------
 private:
-    /*virtual*/void wearableUpdated(LLWearable *wearable, BOOL removed);
+    /*virtual*/void wearableUpdated(LLWearable *wearable, bool removed);
 public:
     void            setWearableItem(LLInventoryItem* new_item, LLViewerWearable* wearable, bool do_append = false);
     void            setWearableOutfit(const LLInventoryItem::item_array_t& items, const std::vector< LLViewerWearable* >& wearables);
@@ -116,20 +114,18 @@ protected:
     void            addWearableToAgentInventory(LLPointer<LLInventoryCallback> cb,
                                                 LLViewerWearable* wearable,
                                                 const LLUUID& category_id = LLUUID::null,
-                                                BOOL notify = TRUE);
+                                                bool notify = true);
     void            addWearabletoAgentInventoryDone(const LLWearableType::EType type,
                                                     const U32 index,
                                                     const LLUUID& item_id,
                                                     LLViewerWearable* wearable);
-    void            recoverMissingWearable(const LLWearableType::EType type, U32 index /*= 0*/);
-    void            recoverMissingWearableDone();
 
     //--------------------------------------------------------------------
     // Editing/moving wearables
     //--------------------------------------------------------------------
 
 public:
-    static void     createWearable(LLWearableType::EType type, bool wear = false, const LLUUID& parent_id = LLUUID::null, std::function<void(const LLUUID&)> created_cb = NULL);
+    static void     createWearable(LLWearableType::EType type, bool wear = false, const LLUUID& parent_id = LLUUID::null, std::function<void(const LLUUID&)> created_cb = nullptr);
     static void     editWearable(const LLUUID& item_id);
     bool            moveWearable(const LLViewerInventoryItem* item, bool closer_to_body);
 
@@ -159,7 +155,7 @@ private:
     // Save Wearables
     //--------------------------------------------------------------------
 public:
-    void            saveWearableAs(const LLWearableType::EType type, const U32 index, const std::string& new_name, const std::string& description, BOOL save_in_lost_and_found);
+    void            saveWearableAs(const LLWearableType::EType type, const U32 index, const std::string& new_name, const std::string& description, bool save_in_lost_and_found);
     void            saveWearable(const LLWearableType::EType type, const U32 index,
                                  const std::string new_name = "");
     void            saveAllWearables();
@@ -212,13 +208,13 @@ private:
     // Member variables
     //--------------------------------------------------------------------
 private:
-    static BOOL     mInitialWearablesUpdateReceived;
-    BOOL            mWearablesLoaded;
+    static bool     mInitialWearablesUpdateReceived;
+    bool            mWearablesLoaded;
 
     /**
      * True if agent's outfit is being changed now.
      */
-    BOOL            mCOFChangeInProgress;
+    bool            mCOFChangeInProgress;
     LLTimer         mCOFChangeTimer;
 
     //--------------------------------------------------------------------------------
diff --git a/indra/newview/llaisapi.cpp b/indra/newview/llaisapi.cpp
index b2ce4d56dd..11c5ffecb6 100644
--- a/indra/newview/llaisapi.cpp
+++ b/indra/newview/llaisapi.cpp
@@ -786,7 +786,7 @@ void AISAPI::FetchOrphans(completion_t callback)
 void AISAPI::EnqueueAISCommand(const std::string &procName, LLCoprocedureManager::CoProcedure_t proc)
 {
     LLCoprocedureManager &inst = LLCoprocedureManager::instance();
-    S32 pending_in_pool = inst.countPending("AIS");
+    auto pending_in_pool = inst.countPending("AIS");
     std::string procFullName = "AIS(" + procName + ")";
     if (pending_in_pool < MAX_SIMULTANEOUS_COROUTINES)
     {
@@ -815,7 +815,7 @@ void AISAPI::onIdle(void *userdata)
     if (!sPostponedQuery.empty())
     {
         LLCoprocedureManager &inst = LLCoprocedureManager::instance();
-        S32 pending_in_pool = inst.countPending("AIS");
+        auto pending_in_pool = inst.countPending("AIS");
         while (pending_in_pool < MAX_SIMULTANEOUS_COROUTINES && !sPostponedQuery.empty())
         {
             ais_query_item_t &item = sPostponedQuery.front();
@@ -1198,7 +1198,7 @@ void AISUpdate::parseItem(const LLSD& item_map)
         // Default to current values where not provided.
         new_item->copyViewerItem(curr_item);
     }
-    BOOL rv = new_item->unpackMessage(item_map);
+    bool rv = new_item->unpackMessage(item_map);
     if (rv)
     {
         if (mFetch)
@@ -1243,7 +1243,7 @@ void AISUpdate::parseLink(const LLSD& link_map, S32 depth)
         // Default to current values where not provided.
         new_link->copyViewerItem(curr_link);
     }
-    BOOL rv = new_link->unpackMessage(link_map);
+    bool rv = new_link->unpackMessage(link_map);
     if (rv)
     {
         const LLUUID& parent_id = new_link->getParentUUID();
@@ -1340,7 +1340,7 @@ void AISUpdate::parseCategory(const LLSD& category_map, S32 depth)
             new_cat = new LLViewerInventoryCategory(LLUUID::null);
         }
     }
-    BOOL rv = new_cat->unpackMessage(category_map);
+    bool rv = new_cat->unpackMessage(category_map);
     // *NOTE: unpackMessage does not unpack version or descendent count.
     if (rv)
     {
@@ -1356,7 +1356,7 @@ void AISUpdate::parseCategory(const LLSD& category_map, S32 depth)
             uuid_int_map_t::const_iterator lookup_it = mCatDescendentsKnown.find(category_id);
             if (mCatDescendentsKnown.end() != lookup_it)
             {
-                S32 descendent_count = lookup_it->second;
+                S32 descendent_count = static_cast<S32>(lookup_it->second);
                 LL_DEBUGS("Inventory") << "Setting descendents count to " << descendent_count
                     << " for category " << category_id << LL_ENDL;
                 new_cat->setDescendentCount(descendent_count);
@@ -1407,7 +1407,7 @@ void AISUpdate::parseCategory(const LLSD& category_map, S32 depth)
             uuid_int_map_t::const_iterator lookup_it = mCatDescendentsKnown.find(category_id);
             if (mCatDescendentsKnown.end() != lookup_it)
             {
-                S32 descendent_count = lookup_it->second;
+                S32 descendent_count = static_cast<S32>(lookup_it->second);
                 LL_DEBUGS("Inventory") << "Setting descendents count to " << descendent_count
                     << " for new category " << category_id << LL_ENDL;
                 new_cat->setDescendentCount(descendent_count);
@@ -1583,7 +1583,7 @@ void AISUpdate::doUpdate()
     checkTimeout();
 
     // Do version/descendant accounting.
-    for (std::map<LLUUID,S32>::const_iterator catit = mCatDescendentDeltas.begin();
+    for (std::map<LLUUID,size_t>::const_iterator catit = mCatDescendentDeltas.begin();
          catit != mCatDescendentDeltas.end(); ++catit)
     {
         LL_DEBUGS("Inventory") << "descendant accounting for " << catit->first << LL_ENDL;
@@ -1607,7 +1607,7 @@ void AISUpdate::doUpdate()
         LLViewerInventoryCategory* cat = gInventory.getCategory(cat_id);
         if (cat)
         {
-            S32 descendent_delta = catit->second;
+            S32 descendent_delta = static_cast<S32>(catit->second);
             S32 old_count = cat->getDescendentCount();
             LL_DEBUGS("Inventory") << "Updating descendant count for "
                                    << cat->getName() << " " << cat_id
@@ -1676,7 +1676,7 @@ void AISUpdate::doUpdate()
                 LLPointer<LLViewerInventoryItem> new_item = lost_it->second;
 
                 new_item->setParent(lost_uuid);
-                new_item->updateParentOnServer(FALSE);
+                new_item->updateParentOnServer(false);
             }
         }
     }
@@ -1731,7 +1731,7 @@ void AISUpdate::doUpdate()
          ucv_it != mCatVersionsUpdated.end(); ++ucv_it)
     {
         const LLUUID id = ucv_it->first;
-        S32 version = ucv_it->second;
+        S32 version = static_cast<S32>(ucv_it->second);
         LLViewerInventoryCategory *cat = gInventory.getCategory(id);
         LL_DEBUGS("Inventory") << "cat version update " << cat->getName() << " to version " << cat->getVersion() << LL_ENDL;
         if (cat->getVersion() != version)
diff --git a/indra/newview/llaisapi.h b/indra/newview/llaisapi.h
index 0dabd9f678..dd490c8268 100644
--- a/indra/newview/llaisapi.h
+++ b/indra/newview/llaisapi.h
@@ -134,7 +134,7 @@ private:
     // Todo: make throttle work over all fetch requests isntead of per-request
     const F32 AIS_EXPIRY_SECONDS = 0.008f;
 
-    typedef std::map<LLUUID,S32> uuid_int_map_t;
+    typedef std::map<LLUUID,size_t> uuid_int_map_t;
     uuid_int_map_t mCatDescendentDeltas;
     uuid_int_map_t mCatDescendentsKnown;
     uuid_int_map_t mCatVersionsUpdated;
diff --git a/indra/newview/llappearancemgr.cpp b/indra/newview/llappearancemgr.cpp
index 97e1c1e6ee..9dd23a5319 100644
--- a/indra/newview/llappearancemgr.cpp
+++ b/indra/newview/llappearancemgr.cpp
@@ -124,18 +124,18 @@ public:
     }
 
     /*virtual*/
-    BOOL tick()
+    bool tick()
     {
         if(mEventTimer.hasExpired())
         {
             LLAppearanceMgr::instance().setOutfitLocked(false);
         }
-        return FALSE;
+        return false;
     }
     void stop() { mEventTimer.stop(); }
     void start() { mEventTimer.start(); }
     void reset() { mEventTimer.reset(); }
-    BOOL getStarted() { return mEventTimer.getStarted(); }
+    bool getStarted() { return mEventTimer.getStarted(); }
 
     LLTimer&  getEventTimer() { return mEventTimer;}
 };
@@ -332,7 +332,7 @@ public:
 
     // virtual
     // Will be deleted after returning true - only safe to do this if all callbacks have fired.
-    BOOL tick()
+    bool tick()
     {
         // mPendingRequests will be zero if all requests have been
         // responded to.  mWaitTimes.empty() will be true if we have
@@ -719,7 +719,7 @@ public:
     bool isMostRecent();
     void handleLateArrivals();
     void resetTime(F32 timeout);
-    static S32 countActive() { return sActiveHoldingPatterns.size(); }
+    static S32 countActive() { return static_cast<S32>(sActiveHoldingPatterns.size()); }
     S32 index() { return mIndex; }
 
 private:
@@ -1335,7 +1335,7 @@ void LLWearableHoldingPattern::onWearableAssetFetch(LLViewerWearable *wearable)
                     wearable_item->setAssetUUID(new_wearable->getAssetID());
                     wearable_item->setTransactionID(new_wearable->getTransactionID());
                     gInventory.updateItem(wearable_item, LLInventoryObserver::INTERNAL);
-                    wearable_item->updateServer(FALSE);
+                    wearable_item->updateServer(false);
 
                     use_count++;
                 }
@@ -1374,7 +1374,7 @@ static void removeDuplicateItems(LLInventoryModel::item_array_t& items)
     // encountered, so we actually keep the *last* of each duplicate
     // item.  This is needed to give the right priority when adding
     // duplicate items to an existing outfit.
-    for (S32 i=items.size()-1; i>=0; i--)
+    for (S32 i = static_cast<S32>(items.size()) - 1; i >= 0; i--)
     {
         LLViewerInventoryItem *item = items.at(i);
         LLUUID item_id = item->getLinkedUUID();
@@ -1735,7 +1735,7 @@ void LLAppearanceMgr::takeOffOutfit(const LLUUID& cat_id)
     LLInventoryModel::item_array_t items;
     LLFindWearablesEx collector(/*is_worn=*/ true, /*include_body_parts=*/ false);
 
-    gInventory.collectDescendentsIf(cat_id, cats, items, FALSE, collector);
+    gInventory.collectDescendentsIf(cat_id, cats, items, false, collector);
 
     LLInventoryModel::item_array_t::const_iterator it = items.begin();
     const LLInventoryModel::item_array_t::const_iterator it_end = items.end();
@@ -1918,7 +1918,7 @@ void LLAppearanceMgr::shallowCopyCategoryContents(const LLUUID& src_id, const LL
     }
 }
 
-BOOL LLAppearanceMgr::getCanMakeFolderIntoOutfit(const LLUUID& folder_id)
+bool LLAppearanceMgr::getCanMakeFolderIntoOutfit(const LLUUID& folder_id)
 {
     // These are the wearable items that are required for considering this
     // folder as containing a complete outfit.
@@ -1945,7 +1945,7 @@ BOOL LLAppearanceMgr::getCanMakeFolderIntoOutfit(const LLUUID& folder_id)
         }
     }
 
-    // If the folder contains the required wearables, return TRUE.
+    // If the folder contains the required wearables, return true.
     return ((required_wearables & folder_wearables) == required_wearables);
 }
 
@@ -2133,11 +2133,11 @@ void LLAppearanceMgr::filterWearableItems(
         items.clear();
         for (S32 i=0; i<LLWearableType::WT_COUNT; i++)
         {
-            S32 size = items_by_type[i].size();
+            auto size = items_by_type[i].size();
             if (size <= 0)
                 continue;
-            S32 start_index = llmax(0,size-max_per_type);
-            for (S32 j = start_index; j<size; j++)
+            auto start_index = llmax(0,size-max_per_type);
+            for (size_t j = start_index; j<size; j++)
             {
                 items.push_back(items_by_type[i][j]);
             }
@@ -2908,7 +2908,7 @@ void LLAppearanceMgr::wearInventoryCategoryOnAvatar( LLInventoryCategory* catego
         LLFloaterSidePanelContainer::showPanel("appearance", LLSD().with("type", "edit_outfit"));
     }
 
-    LLAppearanceMgr::changeOutfit(TRUE, category->getUUID(), append);
+    LLAppearanceMgr::changeOutfit(true, category->getUUID(), append);
 }
 
 // FIXME do we really want to search entire inventory for matching name?
@@ -3588,7 +3588,7 @@ struct WearablesOrderComparator
     LOG_CLASS(WearablesOrderComparator);
     WearablesOrderComparator(const LLWearableType::EType type)
     {
-        mControlSize = build_order_string(type, 0).size();
+        mControlSize = static_cast<U32>(build_order_string(type, 0).size());
     };
 
     bool operator()(const LLInventoryItem* item1, const LLInventoryItem* item2)
@@ -3623,7 +3623,7 @@ void LLAppearanceMgr::getWearableOrderingDescUpdates(LLInventoryModel::item_arra
 
     for (U32 type = LLWearableType::WT_SHIRT; type < LLWearableType::WT_COUNT; type++)
     {
-        U32 size = items_by_type[type].size();
+        U32 size = static_cast<U32>(items_by_type[type].size());
         if (!size) continue;
 
         //sinking down invalid items which need reordering
@@ -4243,12 +4243,12 @@ bool LLAppearanceMgr::moveWearable(LLViewerInventoryItem* item, bool closer_to_b
 
     // FIXME switch to use AISv3 where supported.
     //items need to be updated on a dataserver
-    item->setComplete(TRUE);
-    item->updateServer(FALSE);
+    item->setComplete(true);
+    item->updateServer(false);
     gInventory.updateItem(item);
 
-    swap_item->setComplete(TRUE);
-    swap_item->updateServer(FALSE);
+    swap_item->setComplete(true);
+    swap_item->updateServer(false);
     gInventory.updateItem(swap_item);
 
     //to cause appearance of the agent to be updated
@@ -4402,15 +4402,15 @@ void LLAppearanceMgr::unregisterAttachment(const LLUUID& item_id)
     mAttachmentsChangeSignal();
 }
 
-BOOL LLAppearanceMgr::getIsInCOF(const LLUUID& obj_id) const
+bool LLAppearanceMgr::getIsInCOF(const LLUUID& obj_id) const
 {
     const LLUUID& cof = getCOF();
     if (obj_id == cof)
-        return TRUE;
+        return true;
     const LLInventoryObject* obj = gInventory.getObject(obj_id);
     if (obj && obj->getParentUUID() == cof)
-        return TRUE;
-    return FALSE;
+        return true;
+    return false;
 }
 
 bool LLAppearanceMgr::getIsInCOF(const LLInventoryObject* obj) const
@@ -4577,7 +4577,7 @@ public:
         LLInventoryModel::item_array_t* items;
         gInventory.getDirectDescendentsOf(mComplete.front(), cats, items);
 
-        S32 count = items->size();
+        auto count = items->size();
         if(!count)
         {
             LL_WARNS() << "Nothing fetched in category " << mComplete.front()
@@ -4593,7 +4593,7 @@ public:
         S32 version = cat ? cat->getVersion() : -2;
         LL_INFOS() << "stage1, category " << mComplete.front() << " got " << count << " items, version " << version << " passing to stage2 " << LL_ENDL;
         uuid_vec_t ids;
-        for(S32 i = 0; i < count; ++i)
+        for(size_t i = 0; i < count; ++i)
         {
             ids.push_back(items->at(i)->getUUID());
         }
@@ -4762,7 +4762,7 @@ public:
                 LLAppearanceMgr::getInstance()->wearInventoryCategory(category, true, false);
 
                 // *TODOw: This may not be necessary if initial outfit is chosen already -- josh
-                gAgent.setOutfitChosen(TRUE);
+                gAgent.setOutfitChosen(true);
             }
         }
 
diff --git a/indra/newview/llappearancemgr.h b/indra/newview/llappearancemgr.h
index e5de92b653..6c45a32856 100644
--- a/indra/newview/llappearancemgr.h
+++ b/indra/newview/llappearancemgr.h
@@ -87,7 +87,7 @@ public:
                              LLPointer<LLInventoryCallback> cb);
 
     // Return whether this folder contains minimal contents suitable for making a full outfit.
-    BOOL getCanMakeFolderIntoOutfit(const LLUUID& folder_id);
+    bool getCanMakeFolderIntoOutfit(const LLUUID& folder_id);
 
     // Determine whether a given outfit can be removed.
     bool getCanRemoveOutfit(const LLUUID& outfit_cat_id);
@@ -292,7 +292,7 @@ private:
     // Item-specific convenience functions
 public:
     // Is this in the COF?
-    BOOL getIsInCOF(const LLUUID& obj_id) const;
+    bool getIsInCOF(const LLUUID& obj_id) const;
     bool getIsInCOF(const LLInventoryObject* obj) const;
     // Is this in the COF and can the user delete it from the COF?
     bool getIsProtectedCOFItem(const LLUUID& obj_id) const;
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index f46580c6c0..c93a3f6d0d 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -197,7 +197,6 @@
 
 #include "llworld.h"
 #include "llhudeffecttrail.h"
-#include "llvectorperfoptions.h"
 #include "llslurl.h"
 #include "llurlregistry.h"
 #include "llwatchdog.h"
@@ -288,12 +287,12 @@ static LLAppViewerListener sAppViewerListener(LLAppViewer::instance);
 extern void init_apple_menu(const char* product);
 #endif // LL_DARWIN
 
-extern BOOL gRandomizeFramerate;
-extern BOOL gPeriodicSlowFrame;
-extern BOOL gDebugGL;
+extern bool gRandomizeFramerate;
+extern bool gPeriodicSlowFrame;
+extern bool gDebugGL;
 
 #if LL_DARWIN
-extern BOOL gHiDPISupport;
+extern bool gHiDPISupport;
 #endif
 
 ////////////////////////////////////////////////////////////
@@ -302,8 +301,8 @@ extern BOOL gHiDPISupport;
 F32 gSimLastTime; // Used in LLAppViewer::init and send_viewer_stats()
 F32 gSimFrames;
 
-BOOL gShowObjectUpdates = FALSE;
-BOOL gUseQuickTime = TRUE;
+bool gShowObjectUpdates = false;
+bool gUseQuickTime = true;
 
 eLastExecEvent gLastExecEvent = LAST_EXEC_NORMAL;
 S32 gLastExecDuration = -1; // (<0 indicates unknown)
@@ -345,12 +344,12 @@ F32 gLogoutMaxTime = LOGOUT_REQUEST_TIME;
 S32 gPendingMetricsUploads = 0;
 
 
-BOOL                gDisconnected = FALSE;
+bool                gDisconnected = false;
 
 // used to restore texture state after a mode switch
 LLFrameTimer    gRestoreGLTimer;
-BOOL            gRestoreGL = FALSE;
-bool            gUseWireframe = FALSE;
+bool            gRestoreGL = false;
+bool            gUseWireframe = false;
 
 LLMemoryInfo gSysMemory;
 U64Bytes gMemoryAllocated(0); // updated in display_stats() in llviewerdisplay.cpp
@@ -362,15 +361,16 @@ LLVector3           gRelativeWindVec(0.0, 0.0, 0.0);
 
 U32     gPacketsIn = 0;
 
-BOOL                gPrintMessagesThisFrame = FALSE;
+bool                gPrintMessagesThisFrame = false;
 
-BOOL gRandomizeFramerate = FALSE;
-BOOL gPeriodicSlowFrame = FALSE;
+bool gRandomizeFramerate = false;
+bool gPeriodicSlowFrame = false;
 
-BOOL gCrashOnStartup = FALSE;
-BOOL gLogoutInProgress = FALSE;
+bool gCrashOnStartup = false;
+bool gLLErrorActivated = false;
+bool gLogoutInProgress = false;
 
-BOOL gSimulateMemLeak = FALSE;
+bool gSimulateMemLeak = false;
 
 // We don't want anyone, especially threads working on the graphics pipeline,
 // to have to block due to this WorkQueue being full.
@@ -385,7 +385,7 @@ const std::string START_MARKER_FILE_NAME("SecondLife.start_marker");
 const std::string ERROR_MARKER_FILE_NAME("SecondLife.error_marker");
 const std::string LLERROR_MARKER_FILE_NAME("SecondLife.llerror_marker");
 const std::string LOGOUT_MARKER_FILE_NAME("SecondLife.logout_marker");
-static BOOL gDoDisconnect = FALSE;
+static bool gDoDisconnect = false;
 static std::string gLaunchFileOnQuit;
 
 // Used on Win32 for other apps to identify our window (eg, win_setup)
@@ -499,7 +499,7 @@ bool    create_text_segment_icon_from_url_match(LLUrlMatch* match,LLTextBase* ba
     LLIconCtrl* icon;
 
     if( match->getMenuName() == "menu_url_group.xml" // See LLUrlEntryGroup constructor
-        || gAgent.isInGroup(match_id, TRUE)) //This check seems unfiting, urls are either /agent or /group
+        || gAgent.isInGroup(match_id, true)) //This check seems unfiting, urls are either /agent or /group
     {
         LLGroupIconCtrl::Params icon_params;
         icon_params.group_id = match_id;
@@ -580,7 +580,7 @@ static void settings_to_globals()
 static void settings_modify()
 {
     LLPipeline::sRenderTransparentWater = gSavedSettings.getBOOL("RenderTransparentWater");
-    LLPipeline::sRenderDeferred = TRUE; // FALSE is deprecated
+    LLPipeline::sRenderDeferred = true; // false is deprecated
     LLRenderTarget::sUseFBO             = LLPipeline::sRenderDeferred;
     LLVOSurfacePatch::sLODFactor        = gSavedSettings.getF32("RenderTerrainLODFactor");
     LLVOSurfacePatch::sLODFactor *= LLVOSurfacePatch::sLODFactor; //square lod factor to get exponential range of [1,4]
@@ -663,8 +663,8 @@ LLAppViewer::LLAppViewer()
     mLastAgentForceUpdate(0),
     mMainloopTimeout(NULL),
     mAgentRegionLastAlive(false),
-    mRandomizeFramerate(LLCachedControl<bool>(gSavedSettings,"Randomize Framerate", FALSE)),
-    mPeriodicSlowFrame(LLCachedControl<bool>(gSavedSettings,"Periodic Slow Frame", FALSE)),
+    mRandomizeFramerate(LLCachedControl<bool>(gSavedSettings,"Randomize Framerate", false)),
+    mPeriodicSlowFrame(LLCachedControl<bool>(gSavedSettings,"Periodic Slow Frame", false)),
     mFastTimerLogThread(NULL),
     mSettingsLocationList(NULL),
     mIsFirstRun(false)
@@ -948,7 +948,7 @@ bool LLAppViewer::init()
     //
     // Initialize the window
     //
-    gGLActive = TRUE;
+    gGLActive = true;
     initWindow();
     LL_INFOS("InitInfo") << "Window is initialized." << LL_ENDL ;
 
@@ -1136,7 +1136,7 @@ bool LLAppViewer::init()
       LLNotificationsUtil::add("CorruptedProtectedDataStore");
     }
 
-    gGLActive = FALSE;
+    gGLActive = false;
 
 #if 0 // LL_RELEASE_FOR_DOWNLOAD && !LL_LINUX
     // Skip updater if this is a non-interactive instance
@@ -1344,7 +1344,7 @@ bool LLAppViewer::frame()
         }
         catch (std::bad_alloc&)
         {
-            LLMemory::logMemoryInfo(TRUE);
+            LLMemory::logMemoryInfo(true);
             LLFloaterMemLeak* mem_leak_instance = LLFloaterReg::findTypedInstance<LLFloaterMemLeak>("mem_leaking");
             if (mem_leak_instance)
             {
@@ -1526,7 +1526,7 @@ bool LLAppViewer::doFrame()
             {
                 LL_PROFILE_ZONE_NAMED_CATEGORY_APP("df Display");
                 pingMainloopTimeout("Main:Display");
-                gGLActive = TRUE;
+                gGLActive = true;
 
                 display();
 
@@ -1537,7 +1537,7 @@ bool LLAppViewer::doFrame()
                     gPipeline.mReflectionMapManager.update();
                     LLFloaterSnapshot::update(); // take snapshots
                     LLFloaterSimpleSnapshot::update();
-                    gGLActive = FALSE;
+                    gGLActive = false;
                 }
 
                 if (LLViewerStatsRecorder::instanceExists())
@@ -1701,7 +1701,7 @@ bool LLAppViewer::doFrame()
 
 S32 LLAppViewer::updateTextureThreads(F32 max_time)
 {
-    S32 work_pending = 0;
+    size_t work_pending = 0;
     {
         LL_PROFILE_ZONE_NAMED_CATEGORY_APP("Texture Cache");
         work_pending += LLAppViewer::getTextureCache()->update(max_time); // unpauses the texture cache thread
@@ -1714,7 +1714,7 @@ S32 LLAppViewer::updateTextureThreads(F32 max_time)
         LL_PROFILE_ZONE_NAMED_CATEGORY_APP("Image Fetch");
         work_pending += LLAppViewer::getTextureFetch()->update(max_time); // unpauses the texture fetch thread
     }
-    return work_pending;
+    return static_cast<S32>(work_pending);
 }
 
 void LLAppViewer::flushLFSIO()
@@ -1780,7 +1780,7 @@ bool LLAppViewer::cleanup()
 
     //flag all elements as needing to be destroyed immediately
     // to ensure shutdown order
-    LLMortician::setZealous(TRUE);
+    LLMortician::setZealous(true);
 
     // Give any remaining SLPlugin instances a chance to exit cleanly.
     LLPluginProcessParent::shutdown();
@@ -1989,7 +1989,7 @@ bool LLAppViewer::cleanup()
 
     // Must do this after all panels have been deleted because panels that have persistent rects
     // save their rects on delete.
-    gSavedSettings.saveToFile(gSavedSettings.getString("ClientSettingsFile"), TRUE);
+    gSavedSettings.saveToFile(gSavedSettings.getString("ClientSettingsFile"), true);
 
     LLUIColorTable::instance().saveUserSettings();
 
@@ -2008,7 +2008,7 @@ bool LLAppViewer::cleanup()
     }
     else
     {
-        gSavedPerAccountSettings.saveToFile(gSavedSettings.getString("PerAccountSettingsFile"), TRUE);
+        gSavedPerAccountSettings.saveToFile(gSavedSettings.getString("PerAccountSettingsFile"), true);
         LL_INFOS() << "Saved settings" << LL_ENDL;
 
         if (LLViewerParcelAskPlay::instanceExists())
@@ -2018,7 +2018,7 @@ bool LLAppViewer::cleanup()
     }
 
     std::string warnings_settings_filename = gDirUtilp->getExpandedFilename(LL_PATH_USER_SETTINGS, getSettingsFilename("Default", "Warnings"));
-    gWarningSettings.saveToFile(warnings_settings_filename, TRUE);
+    gWarningSettings.saveToFile(warnings_settings_filename, true);
 
     // Save URL history file
     LLURLHistory::saveFile("url_history.xml");
@@ -2061,9 +2061,9 @@ bool LLAppViewer::cleanup()
     while(1)
     {
         S32 pending = 0;
-        pending += LLAppViewer::getTextureCache()->update(1); // unpauses the worker thread
-        pending += LLAppViewer::getImageDecodeThread()->update(1); // unpauses the image thread
-        pending += LLAppViewer::getTextureFetch()->update(1); // unpauses the texture fetch thread
+        pending += static_cast<S32>(LLAppViewer::getTextureCache()->update(1)); // unpauses the worker thread
+        pending += static_cast<S32>(LLAppViewer::getImageDecodeThread()->update(1)); // unpauses the image thread
+        pending += static_cast<S32>(LLAppViewer::getTextureFetch()->update(1)); // unpauses the texture fetch thread
         pending += LLLFSThread::updateClass(0);
         F64 idle_time = idleTimer.getElapsedTimeF64();
         if(!pending)
@@ -2387,6 +2387,7 @@ void LLAppViewer::initLoggingAndGetLastDuration()
 
         // Set the log file to SecondLife.log
         LLError::logToFile(log_file);
+        LL_INFOS() << "Started logging to " << log_file << LL_ENDL;
         if (!duration_log_msg.empty())
         {
             LL_WARNS("MarkerFile") << duration_log_msg << LL_ENDL;
@@ -2440,7 +2441,7 @@ bool LLAppViewer::loadSettingsFromDirectory(const std::string& location_key,
                 && gSavedSettings.controlExists(file.file_name_setting))
             {
                 // try to find filename stored in file_name_setting control
-                full_settings_path = gSavedSettings.getString(file.file_name_setting);
+                full_settings_path = gSavedSettings.getString(file.file_name_setting());
                 if (full_settings_path.empty())
                 {
                     continue;
@@ -2560,7 +2561,7 @@ bool LLAppViewer::initConfiguration()
     //Load settings files list
     std::string settings_file_list = gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, "settings_files.xml");
     LLXMLNodePtr root;
-    BOOL success = LLXMLNode::parseFile(settings_file_list, root, NULL);
+    bool success = LLXMLNode::parseFile(settings_file_list, root, NULL);
     if (!success)
     {
         LL_WARNS() << "Cannot load default configuration file " << settings_file_list << LL_ENDL;
@@ -2627,7 +2628,7 @@ bool LLAppViewer::initConfiguration()
         c->setValue(true, false);
     }
 
-    gSavedSettings.setBOOL("QAMode", TRUE );
+    gSavedSettings.setBOOL("QAMode", true );
     gSavedSettings.setS32("WatchdogEnabled", 0);
 #endif
 
@@ -2689,7 +2690,7 @@ bool LLAppViewer::initConfiguration()
         // like determining screen DPI value and so on
         mIsFirstRun = true;
 
-        gSavedSettings.setBOOL("FirstRunThisInstall", FALSE);
+        gSavedSettings.setBOOL("FirstRunThisInstall", false);
     }
 
     if (clp.hasOption("sessionsettings"))
@@ -2793,7 +2794,7 @@ bool LLAppViewer::initConfiguration()
     std::string test_name(gSavedSettings.getString("LogMetrics"));
     if (! test_name.empty())
     {
-        LLTrace::BlockTimer::sMetricLog = TRUE;
+        LLTrace::BlockTimer::sMetricLog = true;
         // '--logmetrics' is specified with a named test metric argument so the data gathering is done only on that test
         // In the absence of argument, every metric would be gathered (makes for a rather slow run and hard to decipher report...)
         LL_INFOS() << "'--logmetrics' argument : " << test_name << LL_ENDL;
@@ -2817,19 +2818,19 @@ bool LLAppViewer::initConfiguration()
 
     if (gSavedSettings.getBOOL("DebugSession"))
     {
-        gDebugSession = TRUE;
-        gDebugGL = TRUE;
+        gDebugSession = true;
+        gDebugGL = true;
 
         ll_init_fail_log(gDirUtilp->getExpandedFilename(LL_PATH_LOGS, "test_failures.log"));
     }
 
     if (gSavedSettings.getBOOL("RenderDebugGLSession"))
     {
-        gDebugGLSession = TRUE;
-        gDebugGL = TRUE;
+        gDebugGLSession = true;
+        gDebugGL = true;
         // gDebugGL can cause excessive logging
         // so it's limited to a single session
-        gSavedSettings.setBOOL("RenderDebugGLSession", FALSE);
+        gSavedSettings.setBOOL("RenderDebugGLSession", false);
     }
 
     const LLControlVariable* skinfolder = gSavedSettings.getControl("SkinCurrent");
@@ -2857,10 +2858,10 @@ bool LLAppViewer::initConfiguration()
 
     if (gNonInteractive)
     {
-        tempSetControl("AllowMultipleViewers", "TRUE");
-        tempSetControl("SLURLPassToOtherInstance", "FALSE");
-        tempSetControl("RenderWater", "FALSE");
-        tempSetControl("FlyingAtExit", "FALSE");
+        tempSetControl("AllowMultipleViewers", "true");
+        tempSetControl("SLURLPassToOtherInstance", "false");
+        tempSetControl("RenderWater", "false");
+        tempSetControl("FlyingAtExit", "false");
         tempSetControl("WindowWidth", "1024");
         tempSetControl("WindowHeight", "200");
         LLError::setEnabledLogTypesMask(0);
@@ -3006,8 +3007,8 @@ bool LLAppViewer::initConfiguration()
         LLControlVariable* enable_voice = gSavedSettings.getControl("EnableVoiceChat");
         if(enable_voice)
         {
-            const BOOL DO_NOT_PERSIST = FALSE;
-            enable_voice->setValue(LLSD(FALSE), DO_NOT_PERSIST);
+            const bool DO_NOT_PERSIST = false;
+            enable_voice->setValue(LLSD(false), DO_NOT_PERSIST);
         }
     }
 
@@ -3123,7 +3124,7 @@ bool LLAppViewer::initWindow()
     gHeadlessClient = gSavedSettings.getBOOL("HeadlessClient");
 
     // always start windowed
-    BOOL ignorePixelDepth = gSavedSettings.getBOOL("IgnorePixelDepth");
+    bool ignorePixelDepth = gSavedSettings.getBOOL("IgnorePixelDepth");
 
     LLViewerWindow::Params window_params;
     window_params
@@ -3196,8 +3197,8 @@ bool LLAppViewer::initWindow()
     }
 
     // Set this flag in case we crash while initializing GL
-    gSavedSettings.setBOOL("RenderInitError", TRUE);
-    gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile"), TRUE );
+    gSavedSettings.setBOOL("RenderInitError", true);
+    gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile"), true );
 
     gPipeline.init();
     LL_INFOS("AppInit") << "gPipeline Initialized" << LL_ENDL;
@@ -3205,8 +3206,8 @@ bool LLAppViewer::initWindow()
     stop_glerror();
     gViewerWindow->initGLDefaults();
 
-    gSavedSettings.setBOOL("RenderInitError", FALSE);
-    gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile"), TRUE );
+    gSavedSettings.setBOOL("RenderInitError", false);
+    gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile"), true );
 
     //If we have a startup crash, it's usually near GL initialization, so simulate that.
     if(gCrashOnStartup)
@@ -3221,7 +3222,7 @@ bool LLAppViewer::initWindow()
     if (gSavedSettings.getBOOL("FirstLoginThisInstall") && meetsRequirementsForMaximizedStart())
     {
         LL_INFOS("AppInit") << "This client met the requirements for a maximized initial screen." << LL_ENDL;
-        gSavedSettings.setBOOL("WindowMaximized", TRUE);
+        gSavedSettings.setBOOL("WindowMaximized", true);
     }
 
     if (gSavedSettings.getBOOL("WindowMaximized"))
@@ -3388,7 +3389,7 @@ LLSD LLAppViewer::getViewerInfo() const
     info["NET_BANDWITH"] = gSavedSettings.getF32("ThrottleBandwidthKBPS");
     info["LOD_FACTOR"] = gSavedSettings.getF32("RenderVolumeLODFactor");
     info["RENDER_QUALITY"] = (F32)gSavedSettings.getU32("RenderQualityPerformance");
-    info["TEXTURE_MEMORY"] = gGLManager.mVRAM;
+    info["TEXTURE_MEMORY"] = LLSD::Integer(gGLManager.mVRAM);
 
 #if LL_DARWIN
     info["HIDPI"] = gHiDPISupport;
@@ -3529,7 +3530,7 @@ std::string LLAppViewer::getViewerInfoString(bool default_string) const
         else
         {
             // array value: build KEY_0, KEY_1 etc. entries
-            for (LLSD::Integer n(0), size(ii->second.size()); n < size; ++n)
+            for (LLSD::Integer n(0), size(static_cast<LLSD::Integer>(ii->second.size())); n < size; ++n)
             {
                 args[STRINGIZE(ii->first << '_' << n)] = ii->second[n].asString();
             }
@@ -3577,9 +3578,9 @@ std::string LLAppViewer::getViewerInfoString(bool default_string) const
 
 void LLAppViewer::cleanupSavedSettings()
 {
-    gSavedSettings.setBOOL("MouseSun", FALSE);
+    gSavedSettings.setBOOL("MouseSun", false);
 
-    gSavedSettings.setBOOL("UseEnergy", TRUE);              // force toggle to turn off, since sends message to simulator
+    gSavedSettings.setBOOL("UseEnergy", true);              // force toggle to turn off, since sends message to simulator
 
     gSavedSettings.setBOOL("DebugWindowProc", gDebugWindowProc);
 
@@ -3594,7 +3595,7 @@ void LLAppViewer::cleanupSavedSettings()
     // as we don't track it in callbacks
     if(NULL != gViewerWindow)
     {
-        BOOL maximized = gViewerWindow->getWindow()->getMaximized();
+        bool maximized = gViewerWindow->getWindow()->getMaximized();
         if (!maximized)
         {
             LLCoordScreen window_pos;
@@ -3772,7 +3773,7 @@ void LLAppViewer::recordMarkerVersion(LLAPRFile& marker_file)
     }
 
     // record the viewer version in the marker file
-    marker_file.write(marker_version.data(), marker_version.length());
+    marker_file.write(marker_version.data(), static_cast<S32>(marker_version.length()));
 }
 
 bool LLAppViewer::markerIsSameVersion(const std::string& marker_name) const
@@ -3871,7 +3872,7 @@ void LLAppViewer::processMarkerFiles()
         initLoggingAndGetLastDuration();
         // Create the marker file for this execution & lock it; it will be deleted on a clean exit
         apr_status_t s;
-        s = mMarkerFile.open(mMarkerFileName, LL_APR_WB, TRUE);
+        s = mMarkerFile.open(mMarkerFileName, LL_APR_WB, true);
 
         if (s == APR_SUCCESS && mMarkerFile.getFileHandle())
         {
@@ -4059,7 +4060,7 @@ void LLAppViewer::requestQuit()
         gAgentAvatarp->updateAvatarRezMetrics(true); // force a last packet to be sent.
     }
 
-    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral*)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, TRUE);
+    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral*)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, true);
     effectp->setPositionGlobal(gAgent.getPositionGlobal());
     effectp->setColor(LLColor4U(gAgent.getEffectColor()));
     LLHUDManager::getInstance()->sendEffects();
@@ -4118,7 +4119,7 @@ static bool finish_early_exit(const LLSD& notification, const LLSD& response)
 void LLAppViewer::earlyExit(const std::string& name, const LLSD& substitutions)
 {
     LL_WARNS() << "app_early_exit: " << name << LL_ENDL;
-    gDoDisconnect = TRUE;
+    gDoDisconnect = true;
     LLNotificationsUtil::add(name, substitutions, LLSD(), finish_early_exit);
 }
 
@@ -4126,7 +4127,7 @@ void LLAppViewer::earlyExit(const std::string& name, const LLSD& substitutions)
 void LLAppViewer::earlyExitNoNotify()
 {
     LL_WARNS() << "app_early_exit with no notification: " << LL_ENDL;
-    gDoDisconnect = TRUE;
+    gDoDisconnect = true;
     finish_early_exit( LLSD(), LLSD() );
 }
 
@@ -4157,7 +4158,7 @@ void LLAppViewer::migrateCacheDirectory()
     // Only do this once per fresh install of this version.
     if (gSavedSettings.getBOOL("MigrateCacheDirectory"))
     {
-        gSavedSettings.setBOOL("MigrateCacheDirectory", FALSE);
+        gSavedSettings.setBOOL("MigrateCacheDirectory", false);
 
         std::string old_cache_dir = gDirUtilp->add(gDirUtilp->getOSUserAppDir(), "cache");
         std::string new_cache_dir = gDirUtilp->getCacheDir(true);
@@ -4240,7 +4241,7 @@ U32 LLAppViewer::getObjectCacheVersion()
 bool LLAppViewer::initCache()
 {
     mPurgeCache = false;
-    BOOL read_only = mSecondInstance ? TRUE : FALSE;
+    bool read_only = mSecondInstance;
     LLAppViewer::getTextureCache()->setReadOnly(read_only) ;
     LLVOCache::initParamSingleton(read_only);
 
@@ -4265,7 +4266,7 @@ bool LLAppViewer::initCache()
     if (gSavedSettings.getS32("LocalCacheVersion") != LLAppViewer::getTextureCacheVersion())
     {
         texture_cache_mismatch = true;
-        if(!read_only)
+        if (!read_only)
         {
             gSavedSettings.setS32("LocalCacheVersion", LLAppViewer::getTextureCacheVersion());
 
@@ -4274,7 +4275,7 @@ bool LLAppViewer::initCache()
         }
     }
 
-    if(!read_only)
+    if (!read_only)
     {
         // Purge cache if user requested it
         if (gSavedSettings.getBOOL("PurgeCacheOnStartup") ||
@@ -4449,7 +4450,7 @@ void LLAppViewer::forceDisconnect(const std::string& mesg)
     }
 
     LLSD args;
-    gDoDisconnect = TRUE;
+    gDoDisconnect = true;
 
     if (LLStartUp::getStartupState() < STATE_STARTED)
     {
@@ -4472,7 +4473,7 @@ void LLAppViewer::badNetworkHandler()
     // Flush all of our caches on exit in the case of disconnect due to
     // invalid packets.
 
-    mPurgeCacheOnExit = TRUE;
+    mPurgeCacheOnExit = true;
 
     std::ostringstream message;
     message <<
@@ -4500,8 +4501,8 @@ void LLAppViewer::saveFinalSnapshot()
         gSavedSettings.setVector3d("FocusPosOnLogout", gAgentCamera.calcFocusPositionTargetGlobal());
         gSavedSettings.setVector3d("CameraPosOnLogout", gAgentCamera.calcCameraPositionTargetGlobal());
         gViewerWindow->setCursor(UI_CURSOR_WAIT);
-        gAgentCamera.changeCameraToThirdPerson( FALSE );    // don't animate, need immediate switch
-        gSavedSettings.setBOOL("ShowParcelOwners", FALSE);
+        gAgentCamera.changeCameraToThirdPerson( false );    // don't animate, need immediate switch
+        gSavedSettings.setBOOL("ShowParcelOwners", false);
         idle();
 
         std::string snap_filename = gDirUtilp->getLindenUserDir();
@@ -4511,12 +4512,12 @@ void LLAppViewer::saveFinalSnapshot()
         gViewerWindow->saveSnapshot(snap_filename,
                                     gViewerWindow->getWindowWidthRaw(),
                                     gViewerWindow->getWindowHeightRaw(),
-                                    FALSE,
+                                    false,
                                     gSavedSettings.getBOOL("RenderHUDInSnapshot"),
-                                    TRUE,
+                                    true,
                                     LLSnapshotModel::SNAPSHOT_TYPE_COLOR,
                                     LLSnapshotModel::SNAPSHOT_FORMAT_PNG);
-        mSavedFinalSnapshot = TRUE;
+        mSavedFinalSnapshot = true;
 
         if (gAgent.isInHomeRegion())
         {
@@ -4704,13 +4705,13 @@ void LLAppViewer::idle()
     if (LLStartUp::getStartupState() < STATE_STARTED)
     {
         // Skip rest if idle startup returns false (essentially, no world yet)
-        gGLActive = TRUE;
+        gGLActive = true;
         if (!idle_startup())
         {
-            gGLActive = FALSE;
+            gGLActive = false;
             return;
         }
-        gGLActive = FALSE;
+        gGLActive = false;
     }
 
 
@@ -4746,7 +4747,7 @@ void LLAppViewer::idle()
         F32 agent_update_time = agent_update_timer.getElapsedTimeF32();
         F32 agent_force_update_time = mLastAgentForceUpdate + agent_update_time;
         bool timed_out = agent_update_time > (1.0f / (F32)AGENT_UPDATES_PER_SECOND);
-        BOOL force_send =
+        bool force_send =
             // if there is something to send
             (gAgent.controlFlagsDirty() && timed_out)
             // if something changed
@@ -5059,7 +5060,7 @@ void LLAppViewer::idle()
     // forcibly quit if it has taken too long
     if (mQuitRequested)
     {
-        gGLActive = TRUE;
+        gGLActive = true;
         idleShutdown();
     }
 }
@@ -5117,7 +5118,7 @@ void LLAppViewer::idleShutdown()
         static S32 total_uploads = 0;
         // Sometimes total upload count can change during logout.
         total_uploads = llmax(total_uploads, pending_uploads);
-        gViewerWindow->setShowProgress(TRUE);
+        gViewerWindow->setShowProgress(true);
         S32 finished_uploads = total_uploads - pending_uploads;
         F32 percent = 100.f * finished_uploads / total_uploads;
         gViewerWindow->setProgressPercent(percent);
@@ -5129,7 +5130,7 @@ void LLAppViewer::idleShutdown()
         && gLogoutTimer.getElapsedTimeF32() < SHUTDOWN_UPLOAD_SAVE_TIME
         && !logoutRequestSent())
     {
-        gViewerWindow->setShowProgress(TRUE);
+        gViewerWindow->setShowProgress(true);
         gViewerWindow->setProgressPercent(100.f);
         gViewerWindow->setProgressString(LLTrans::getString("LoggingOut"));
         return;
@@ -5141,7 +5142,7 @@ void LLAppViewer::idleShutdown()
         sendLogoutRequest();
 
         // Wait for a LogoutReply message
-        gViewerWindow->setShowProgress(TRUE);
+        gViewerWindow->setShowProgress(true);
         gViewerWindow->setProgressPercent(100.f);
         gViewerWindow->setProgressString(LLTrans::getString("LoggingOut"));
         return;
@@ -5161,7 +5162,7 @@ void LLAppViewer::sendLogoutRequest()
     if(!mLogoutRequestSent && gMessageSystem)
     {
         //Set internal status variables and marker files before actually starting the logout process
-        gLogoutInProgress = TRUE;
+        gLogoutInProgress = true;
         if (!mSecondInstance)
         {
             mLogoutMarkerFileName = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,LOGOUT_MARKER_FILE_NAME);
@@ -5191,7 +5192,7 @@ void LLAppViewer::sendLogoutRequest()
 
         gLogoutTimer.reset();
         gLogoutMaxTime = LOGOUT_REQUEST_TIME;
-        mLogoutRequestSent = TRUE;
+        mLogoutRequestSent = true;
 
         if(LLVoiceClient::instanceExists())
         {
@@ -5216,7 +5217,7 @@ void LLAppViewer::updateNameLookupUrl(const LLViewerRegion * regionp)
     if (have_capability)
     {
         // we have support for display names, use it
-        U32 url_size = name_lookup_url.size();
+        auto url_size = name_lookup_url.size();
         // capabilities require URLs with slashes before query params:
         // https://<host>:<port>/cap/<uuid>/?ids=<blah>
         // but the caps are granted like:
@@ -5241,6 +5242,11 @@ void LLAppViewer::updateNameLookupUrl(const LLViewerRegion * regionp)
     }
 }
 
+void LLAppViewer::postToMainCoro(const LL::WorkQueue::Work& work)
+{
+    gMainloopWork.post(work);
+}
+
 void LLAppViewer::idleNameCache()
 {
     // Neither old nor new name cache can function before agent has a region
@@ -5363,7 +5369,7 @@ void LLAppViewer::idleNetwork()
         if (gPrintMessagesThisFrame)
         {
             LL_INFOS() << "Decoded " << total_decoded << " msgs this frame!" << LL_ENDL;
-            gPrintMessagesThisFrame = FALSE;
+            gPrintMessagesThisFrame = false;
         }
     }
     add(LLStatViewer::NUM_NEW_OBJECTS, gObjectList.mNumNewObjects);
@@ -5462,7 +5468,7 @@ void LLAppViewer::disconnectViewer()
     LLDestroyClassList::instance().fireCallbacks();
 
     cleanup_xfer_manager();
-    gDisconnected = TRUE;
+    gDisconnected = true;
 
     // Pass the connection state to LLUrlEntryParcel not to attempt
     // parcel info requests while disconnected.
diff --git a/indra/newview/llappviewer.h b/indra/newview/llappviewer.h
index 4f18e722f2..08fbbaa390 100644
--- a/indra/newview/llappviewer.h
+++ b/indra/newview/llappviewer.h
@@ -227,6 +227,9 @@ public:
 
     void updateNameLookupUrl(const LLViewerRegion* regionp);
 
+    // post given work to the "mainloop" work queue for handling on the main thread
+    void postToMainCoro(const LL::WorkQueue::Work& work);
+
 protected:
     virtual bool initWindow(); // Initialize the viewer's window.
     virtual void initLoggingAndGetLastDuration(); // Initialize log files, logging system
@@ -344,7 +347,7 @@ const S32 AGENT_FORCE_UPDATES_PER_SECOND  = 1;
 // "// llstartup" indicates that llstartup is the only client for this global.
 
 extern LLSD gDebugInfo;
-extern BOOL gShowObjectUpdates;
+extern bool gShowObjectUpdates;
 
 typedef enum
 {
@@ -385,10 +388,10 @@ extern S32 gPendingMetricsUploads;
 extern F32 gSimLastTime;
 extern F32 gSimFrames;
 
-extern BOOL     gDisconnected;
+extern bool     gDisconnected;
 
 extern LLFrameTimer gRestoreGLTimer;
-extern BOOL         gRestoreGL;
+extern bool         gRestoreGL;
 extern bool     gUseWireframe;
 
 extern LLMemoryInfo gSysMemory;
@@ -399,13 +402,13 @@ extern std::string gLastVersionChannel;
 extern LLVector3 gWindVec;
 extern LLVector3 gRelativeWindVec;
 extern U32  gPacketsIn;
-extern BOOL gPrintMessagesThisFrame;
+extern bool gPrintMessagesThisFrame;
 
 extern LLUUID gBlackSquareID;
 
-extern BOOL gRandomizeFramerate;
-extern BOOL gPeriodicSlowFrame;
+extern bool gRandomizeFramerate;
+extern bool gPeriodicSlowFrame;
 
-extern BOOL gSimulateMemLeak;
+extern bool gSimulateMemLeak;
 
 #endif // LL_LLAPPVIEWER_H
diff --git a/indra/newview/llappviewermacosx-objc.mm b/indra/newview/llappviewermacosx-objc.mm
index 5d9ca24db2..9b6bfe621b 100644
--- a/indra/newview/llappviewermacosx-objc.mm
+++ b/indra/newview/llappviewermacosx-objc.mm
@@ -25,7 +25,7 @@
  */ 
 
 #if !defined LL_DARWIN
-	#error "Use only with Mac OS X"
+	#error "Use only with macOS"
 #endif
 
 #import <Cocoa/Cocoa.h>
diff --git a/indra/newview/llappviewermacosx.cpp b/indra/newview/llappviewermacosx.cpp
index fcdcd3ab9b..4162c0479a 100644
--- a/indra/newview/llappviewermacosx.cpp
+++ b/indra/newview/llappviewermacosx.cpp
@@ -27,7 +27,7 @@
 #include "llviewerprecompiledheaders.h"
 
 #if !defined LL_DARWIN
-    #error "Use only with Mac OS X"
+    #error "Use only with macOS"
 #endif
 
 #define LL_CARBON_CRASH_HANDLER 1
diff --git a/indra/newview/llappviewerwin32.cpp b/indra/newview/llappviewerwin32.cpp
index a13e4de308..51a8942192 100644
--- a/indra/newview/llappviewerwin32.cpp
+++ b/indra/newview/llappviewerwin32.cpp
@@ -75,8 +75,9 @@
 // Bugsplat (http://bugsplat.com) crash reporting tool
 #ifdef LL_BUGSPLAT
 #include "BugSplat.h"
-#include "json/reader.h"                 // JsonCpp
+#include "boost/json.hpp"                 // Boost.Json
 #include "llagent.h"                // for agent location
+#include "llstartup.h"
 #include "llviewerregion.h"
 #include "llvoavatarself.h"         // for agent name
 
@@ -138,8 +139,7 @@ namespace
             // We don't have an email address for any user. Hijack this
             // metadata field for the platform identifier.
             sBugSplatSender->setDefaultUserEmail(
-                WCSTR(STRINGIZE(LLOSInfo::instance().getOSStringSimple() << " ("
-                                << ADDRESS_SIZE << "-bit)")));
+                WCSTR(LLOSInfo::instance().getOSStringSimple()));
 
             if (gAgentAvatarp)
             {
@@ -152,6 +152,8 @@ namespace
 
             // LL_ERRS message, when there is one
             sBugSplatSender->setDefaultUserDescription(WCSTR(LLError::getFatalMessage()));
+            // App state
+            sBugSplatSender->setAttribute(WCSTR(L"AppState"), WCSTR(LLStartUp::getStartupStateString()));
 
             if (gAgent.getRegion())
             {
@@ -522,7 +524,7 @@ int APIENTRY wWinMain(HINSTANCE hInstance,
         }
 #endif
 
-        gGLActive = TRUE;
+        gGLActive = true;
 
         viewer_app_ptr->cleanup();
 
@@ -694,24 +696,25 @@ bool LLAppViewerWin32::init()
         }
         else
         {
-            Json::Reader reader;
-            Json::Value build_data;
-            if (!reader.parse(inf, build_data, false)) // don't collect comments
+            boost::json::error_code ec;
+            boost::json::value build_data = boost::json::parse(inf, ec);
+            if(ec.failed())
             {
                 // gah, the typo is baked into Json::Reader API
                 LL_WARNS("BUGSPLAT") << "Can't initialize BugSplat, can't parse '" << build_data_fname
-                    << "': " << reader.getFormatedErrorMessages() << LL_ENDL;
+                    << "': " << ec.what() << LL_ENDL;
             }
             else
             {
-                Json::Value BugSplat_DB = build_data["BugSplat DB"];
-                if (!BugSplat_DB)
+                if (!build_data.is_object() || !build_data.as_object().contains("BugSplat DB"))
                 {
                     LL_WARNS("BUGSPLAT") << "Can't initialize BugSplat, no 'BugSplat DB' entry in '"
                         << build_data_fname << "'" << LL_ENDL;
                 }
                 else
                 {
+                    boost::json::value BugSplat_DB = build_data.at("BugSplat DB");
+
                     // Got BugSplat_DB, onward!
                     std::wstring version_string(WSTRINGIZE(LL_VIEWER_VERSION_MAJOR << '.' <<
                         LL_VIEWER_VERSION_MINOR << '.' <<
@@ -733,7 +736,7 @@ bool LLAppViewerWin32::init()
 
                     // have to convert normal wide strings to strings of __wchar_t
                     sBugSplatSender = new MiniDmpSender(
-                        WCSTR(BugSplat_DB.asString()),
+                        WCSTR(boost::json::value_to<std::string>(BugSplat_DB)),
                         WCSTR(LL_TO_WSTRING(LL_VIEWER_CHANNEL)),
                         WCSTR(version_string),
                         nullptr,              // szAppIdentifier -- set later
@@ -819,17 +822,17 @@ bool LLAppViewerWin32::initHardwareTest()
     // Do driver verification and initialization based on DirectX
     // hardware polling and driver versions
     //
-    if (TRUE == gSavedSettings.getBOOL("ProbeHardwareOnStartup") && FALSE == gSavedSettings.getBOOL("NoHardwareProbe"))
+    if (true == gSavedSettings.getBOOL("ProbeHardwareOnStartup") && false == gSavedSettings.getBOOL("NoHardwareProbe"))
     {
         // per DEV-11631 - disable hardware probing for everything
         // but vram.
-        BOOL vram_only = TRUE;
+        bool vram_only = true;
 
         LLSplashScreen::update(LLTrans::getString("StartupDetectingHardware"));
 
         LL_DEBUGS("AppInit") << "Attempting to poll DirectX for hardware info" << LL_ENDL;
         gDXHardware.setWriteDebugFunc(write_debug_dx);
-        BOOL probe_ok = gDXHardware.getInfo(vram_only);
+        bool probe_ok = gDXHardware.getInfo(vram_only);
 
         if (!probe_ok
             && gWarningSettings.getBOOL("AboutDirectX9"))
@@ -850,12 +853,12 @@ bool LLAppViewerWin32::initHardwareTest()
                 LLWeb::loadURLExternal("http://secondlife.com/support/", false);
                 return false;
             }
-            gWarningSettings.setBOOL("AboutDirectX9", FALSE);
+            gWarningSettings.setBOOL("AboutDirectX9", false);
         }
         LL_DEBUGS("AppInit") << "Done polling DirectX for hardware info" << LL_ENDL;
 
         // Only probe once after installation
-        gSavedSettings.setBOOL("ProbeHardwareOnStartup", FALSE);
+        gSavedSettings.setBOOL("ProbeHardwareOnStartup", false);
 
         // Disable so debugger can work
         std::string splash_msg;
@@ -935,7 +938,7 @@ bool LLAppViewerWin32::sendURLToOtherInstance(const std::string& url)
         COPYDATASTRUCT cds;
         const S32 SLURL_MESSAGE_TYPE = 0;
         cds.dwData = SLURL_MESSAGE_TYPE;
-        cds.cbData = url.length() + 1;
+        cds.cbData = static_cast<DWORD>(url.length()) + 1;
         cds.lpData = (void*)url.c_str();
 
         LRESULT msg_result = SendMessage(other_window, WM_COPYDATA, NULL, (LPARAM)&cds);
diff --git a/indra/newview/llattachmentsmgr.cpp b/indra/newview/llattachmentsmgr.cpp
index 7baf5f6119..deabcd9f42 100644
--- a/indra/newview/llattachmentsmgr.cpp
+++ b/indra/newview/llattachmentsmgr.cpp
@@ -55,7 +55,7 @@ LLAttachmentsMgr::~LLAttachmentsMgr()
 
 void LLAttachmentsMgr::addAttachmentRequest(const LLUUID& item_id,
                                             const U8 attachment_pt,
-                                            const BOOL add)
+                                            const bool add)
 {
     LLViewerInventoryItem *item = gInventory.getItem(item_id);
 
@@ -296,7 +296,7 @@ void LLAttachmentsMgr::LLItemRequestTimes::addTime(const LLUUID& inv_item_id)
 void LLAttachmentsMgr::LLItemRequestTimes::removeTime(const LLUUID& inv_item_id)
 {
     LLInventoryItem *item = gInventory.getItem(inv_item_id);
-    S32 remove_count = (*this).erase(inv_item_id);
+    auto remove_count = (*this).erase(inv_item_id);
     if (remove_count)
     {
         LL_DEBUGS("Avatar") << "ATT " << mOpName << " removing request time "
@@ -304,18 +304,18 @@ void LLAttachmentsMgr::LLItemRequestTimes::removeTime(const LLUUID& inv_item_id)
     }
 }
 
-BOOL LLAttachmentsMgr::LLItemRequestTimes::getTime(const LLUUID& inv_item_id, LLTimer& timer) const
+bool LLAttachmentsMgr::LLItemRequestTimes::getTime(const LLUUID& inv_item_id, LLTimer& timer) const
 {
     std::map<LLUUID,LLTimer>::const_iterator it = (*this).find(inv_item_id);
     if (it != (*this).end())
     {
         timer = it->second;
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLAttachmentsMgr::LLItemRequestTimes::wasRequestedRecently(const LLUUID& inv_item_id) const
+bool LLAttachmentsMgr::LLItemRequestTimes::wasRequestedRecently(const LLUUID& inv_item_id) const
 {
     LLTimer request_time;
     if (getTime(inv_item_id, request_time))
@@ -325,7 +325,7 @@ BOOL LLAttachmentsMgr::LLItemRequestTimes::wasRequestedRecently(const LLUUID& in
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
diff --git a/indra/newview/llattachmentsmgr.h b/indra/newview/llattachmentsmgr.h
index 513daafabe..2428acfb38 100644
--- a/indra/newview/llattachmentsmgr.h
+++ b/indra/newview/llattachmentsmgr.h
@@ -69,13 +69,13 @@ public:
     {
         LLUUID mItemID;
         U8 mAttachmentPt;
-        BOOL mAdd;
+        bool mAdd;
     };
     typedef std::deque<AttachmentsInfo> attachments_vec_t;
 
     void addAttachmentRequest(const LLUUID& item_id,
                               const U8 attachment_pt,
-                              const BOOL add);
+                              const bool add);
     void onAttachmentRequested(const LLUUID& item_id);
     void requestAttachments(attachments_vec_t& attachment_requests);
     static void onIdle(void *);
@@ -95,8 +95,8 @@ private:
         LLItemRequestTimes(const std::string& op_name, F32 timeout);
         void addTime(const LLUUID& inv_item_id);
         void removeTime(const LLUUID& inv_item_id);
-        BOOL wasRequestedRecently(const LLUUID& item_id) const;
-        BOOL getTime(const LLUUID& inv_item_id, LLTimer& timer) const;
+        bool wasRequestedRecently(const LLUUID& item_id) const;
+        bool getTime(const LLUUID& inv_item_id, LLTimer& timer) const;
 
     private:
         F32 mTimeout;
diff --git a/indra/newview/llautoreplace.cpp b/indra/newview/llautoreplace.cpp
index e1d494f7c7..f200ca8e31 100644
--- a/indra/newview/llautoreplace.cpp
+++ b/indra/newview/llautoreplace.cpp
@@ -81,7 +81,7 @@ void LLAutoReplace::autoreplaceCallback(S32& replacement_start, S32& replacement
                         replacement_start = word_start;
                         replacement_length = word_end - word_start + 1;
                         replacement_string = utf8str_to_wstring(replacement_word);
-                        S32 size_change = replacement_string.size() - old_string.size();
+                        S32 size_change = static_cast<S32>(replacement_string.size() - old_string.size());
                         cursor_pos += size_change;
                     }
                 }
diff --git a/indra/newview/llavataractions.cpp b/indra/newview/llavataractions.cpp
index 2857235dd2..038030a1f6 100644
--- a/indra/newview/llavataractions.cpp
+++ b/indra/newview/llavataractions.cpp
@@ -527,7 +527,7 @@ void LLAvatarActions::teleport_request_callback(const LLSD& notification, const
         msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
 
         msg->nextBlockFast(_PREHASH_MessageBlock);
-        msg->addBOOLFast(_PREHASH_FromGroup, FALSE);
+        msg->addBOOLFast(_PREHASH_FromGroup, false);
         msg->addUUIDFast(_PREHASH_ToAgentID, notification["substitutions"]["uuid"] );
         msg->addU8Fast(_PREHASH_Offline, IM_ONLINE);
         msg->addU8Fast(_PREHASH_Dialog, IM_TELEPORT_REQUEST);
@@ -652,8 +652,8 @@ void LLAvatarActions::csr(const LLUUID& id, std::string name)
     std::string url = "http://csr.lindenlab.com/agent/";
 
     // slow and stupid, but it's late
-    S32 len = name.length();
-    for (S32 i = 0; i < len; i++)
+    auto len = name.length();
+    for (size_t i = 0; i < len; i++)
     {
         if (name[i] == ' ')
         {
@@ -716,7 +716,7 @@ namespace action_give_inventory
      */
     static LLInventoryPanel* get_active_inventory_panel()
     {
-        LLInventoryPanel* active_panel = LLInventoryPanel::getActiveInventoryPanel(FALSE);
+        LLInventoryPanel* active_panel = LLInventoryPanel::getActiveInventoryPanel(false);
         LLFloater* floater_appearance = LLFloaterReg::findInstance("appearance");
         if (!active_panel || (floater_appearance && floater_appearance->hasFocus()))
         {
@@ -828,11 +828,11 @@ namespace action_give_inventory
             return;
         }
 
-        S32 count = LLShareInfo::instance().mAvatarNames.size();
+        auto count = LLShareInfo::instance().mAvatarNames.size();
         bool shared = count && !inventory_selected_uuids.empty();
 
         // iterate through avatars
-        for(S32 i = 0; i < count; ++i)
+        for(size_t i = 0; i < count; ++i)
         {
             const LLUUID& avatar_uuid = LLShareInfo::instance().mAvatarUuids[i];
 
@@ -1055,7 +1055,7 @@ void LLAvatarActions::shareWithAvatars(LLView * panel)
     LLFloater* root_floater = gFloaterView->getParentFloater(panel);
     LLInventoryPanel* inv_panel = dynamic_cast<LLInventoryPanel*>(panel);
     LLFloaterAvatarPicker* picker =
-        LLFloaterAvatarPicker::show(boost::bind(give_inventory, _1, _2, inv_panel), TRUE, FALSE, FALSE, root_floater->getName());
+        LLFloaterAvatarPicker::show(boost::bind(give_inventory, _1, _2, inv_panel), true, false, false, root_floater->getName());
     if (!picker)
     {
         return;
@@ -1077,7 +1077,7 @@ void LLAvatarActions::shareWithAvatars(const uuid_set_t inventory_selected_uuids
     using namespace action_give_inventory;
 
     LLFloaterAvatarPicker* picker =
-        LLFloaterAvatarPicker::show(boost::bind(give_inventory_ids, _1, _2, inventory_selected_uuids), TRUE, FALSE, FALSE, root_floater->getName());
+        LLFloaterAvatarPicker::show(boost::bind(give_inventory_ids, _1, _2, inventory_selected_uuids), true, false, false, root_floater->getName());
     if (!picker)
     {
         return;
@@ -1288,7 +1288,7 @@ bool LLAvatarActions::handleRemove(const LLSD& notification, const LLSD& respons
             case 0: // YES
                 if( ip->isRightGrantedTo(LLRelationship::GRANT_MODIFY_OBJECTS))
                 {
-                    LLAvatarTracker::instance().empower(id, FALSE);
+                    LLAvatarTracker::instance().empower(id, false);
                     LLAvatarTracker::instance().notifyObservers();
                 }
                 LLAvatarTracker::instance().terminateBuddy(id);
diff --git a/indra/newview/llavatarlist.cpp b/indra/newview/llavatarlist.cpp
index e467f74f9c..8f858fe4e1 100644
--- a/indra/newview/llavatarlist.cpp
+++ b/indra/newview/llavatarlist.cpp
@@ -246,7 +246,7 @@ void LLAvatarList::setDirty(bool val /*= true*/, bool force_refresh /*= false*/)
 //////////////////////////////////////////////////////////////////////////
 void LLAvatarList::refresh()
 {
-    bool have_names         = TRUE;
+    bool have_names         = true;
     bool add_limit_exceeded = false;
     bool modified           = false;
     bool have_filter        = !mNameFilter.empty();
@@ -415,7 +415,7 @@ S32 LLAvatarList::notifyParent(const LLSD& info)
     return LLFlatListViewEx::notifyParent(info);
 }
 
-void LLAvatarList::addNewItem(const LLUUID& id, const std::string& name, BOOL is_online, EAddPosition pos)
+void LLAvatarList::addNewItem(const LLUUID& id, const std::string& name, bool is_online, EAddPosition pos)
 {
     LLAvatarListItem* item = new LLAvatarListItem();
     item->setShowCompleteName(mShowCompleteName);
@@ -437,9 +437,9 @@ void LLAvatarList::addNewItem(const LLUUID& id, const std::string& name, BOOL is
 }
 
 // virtual
-BOOL LLAvatarList::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLAvatarList::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLUICtrl::handleRightMouseDown(x, y, mask);
+    bool handled = LLUICtrl::handleRightMouseDown(x, y, mask);
     if ( mContextMenu)
     {
         uuid_vec_t selected_uuids;
@@ -449,7 +449,7 @@ BOOL LLAvatarList::handleRightMouseDown(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLAvatarList::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLAvatarList::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     gFocusMgr.setMouseCapture(this);
 
@@ -461,7 +461,7 @@ BOOL LLAvatarList::handleMouseDown(S32 x, S32 y, MASK mask)
     return LLFlatListViewEx::handleMouseDown(x, y, mask);
 }
 
-BOOL LLAvatarList::handleMouseUp( S32 x, S32 y, MASK mask )
+bool LLAvatarList::handleMouseUp( S32 x, S32 y, MASK mask )
 {
     if(hasMouseCapture())
     {
@@ -471,7 +471,7 @@ BOOL LLAvatarList::handleMouseUp( S32 x, S32 y, MASK mask )
     return LLFlatListViewEx::handleMouseUp(x, y, mask);
 }
 
-BOOL LLAvatarList::handleHover(S32 x, S32 y, MASK mask)
+bool LLAvatarList::handleHover(S32 x, S32 y, MASK mask)
 {
     bool handled = hasMouseCapture();
     if(handled)
@@ -500,9 +500,9 @@ BOOL LLAvatarList::handleHover(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-void LLAvatarList::setVisible(BOOL visible)
+void LLAvatarList::setVisible(bool visible)
 {
-    if ( visible == FALSE && mContextMenu )
+    if (!visible && mContextMenu )
     {
         mContextMenu->hide();
     }
diff --git a/indra/newview/llavatarlist.h b/indra/newview/llavatarlist.h
index 2352c7cd55..af5bfefcde 100644
--- a/indra/newview/llavatarlist.h
+++ b/indra/newview/llavatarlist.h
@@ -65,7 +65,7 @@ public:
 
     virtual void clear();
 
-    virtual void setVisible(BOOL visible);
+    virtual void setVisible(bool visible);
 
     void setNameFilter(const std::string& filter);
     void setDirty(bool val = true, bool force_refresh = false);
@@ -84,10 +84,10 @@ public:
     bool getIconsVisible() const { return mShowIcons; }
     const std::string getIconParamName() const{return mIconParamName;}
     std::string getAvatarName(LLAvatarName av_name);
-    virtual BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMouseDown( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
+    virtual bool handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseDown( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
 
     // Return true if filter has at least one match.
     bool filterHasMatches();
@@ -105,7 +105,7 @@ public:
 protected:
     void refresh();
 
-    void addNewItem(const LLUUID& id, const std::string& name, BOOL is_online, EAddPosition pos = ADD_BOTTOM);
+    void addNewItem(const LLUUID& id, const std::string& name, bool is_online, EAddPosition pos = ADD_BOTTOM);
     void computeDifference(
         const uuid_vec_t& vnew,
         uuid_vec_t& vadded,
diff --git a/indra/newview/llavatarlistitem.cpp b/indra/newview/llavatarlistitem.cpp
index 5f243d18c0..880910d18e 100644
--- a/indra/newview/llavatarlistitem.cpp
+++ b/indra/newview/llavatarlistitem.cpp
@@ -103,7 +103,7 @@ LLAvatarListItem::~LLAvatarListItem()
     }
 }
 
-BOOL  LLAvatarListItem::postBuild()
+bool LLAvatarListItem::postBuild()
 {
     mAvatarIcon = getChild<LLAvatarIconCtrl>("avatar_icon");
     mAvatarName = getChild<LLTextBox>("avatar_name");
@@ -141,10 +141,10 @@ BOOL  LLAvatarListItem::postBuild()
         sStaticInitialized = true;
     }
 
-    return TRUE;
+    return true;
 }
 
-void LLAvatarListItem::handleVisibilityChange ( BOOL new_visibility )
+void LLAvatarListItem::handleVisibilityChange ( bool new_visibility )
 {
     //Adjust positions of icons (info button etc) when
     //speaking indicator visibility was changed/toggled while panel was closed (not visible)
@@ -325,7 +325,7 @@ void LLAvatarListItem::setShowProfileBtn(bool show)
 void LLAvatarListItem::showSpeakingIndicator(bool visible)
 {
     // Already done? Then do nothing.
-    if (mSpeakingIndicator->getVisible() == (BOOL)visible)
+    if (mSpeakingIndicator->getVisible() == (bool)visible)
         return;
 // Disabled to not contradict with SpeakingIndicatorManager functionality. EXT-3976
 // probably this method should be totally removed.
@@ -336,7 +336,7 @@ void LLAvatarListItem::showSpeakingIndicator(bool visible)
 void LLAvatarListItem::setAvatarIconVisible(bool visible)
 {
     // Already done? Then do nothing.
-    if (mAvatarIcon->getVisible() == (BOOL)visible)
+    if (mAvatarIcon->getVisible() == (bool)visible)
     {
         return;
     }
@@ -356,17 +356,17 @@ void LLAvatarListItem::onProfileBtnClick()
     LLAvatarActions::showProfile(mAvatarId);
 }
 
-BOOL LLAvatarListItem::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLAvatarListItem::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if(mInfoBtn->getRect().pointInRect(x, y))
     {
         onInfoBtnClick();
-        return TRUE;
+        return true;
     }
     if(mProfileBtn->getRect().pointInRect(x, y))
     {
         onProfileBtnClick();
-        return TRUE;
+        return true;
     }
     return LLPanel::handleDoubleClick(x, y, mask);
 }
diff --git a/indra/newview/llavatarlistitem.h b/indra/newview/llavatarlistitem.h
index 3f6dcb0783..2e4c597d30 100644
--- a/indra/newview/llavatarlistitem.h
+++ b/indra/newview/llavatarlistitem.h
@@ -79,12 +79,12 @@ public:
     LLAvatarListItem(bool not_from_ui_factory = true);
     virtual ~LLAvatarListItem();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     /**
      * Processes notification from speaker indicator to update children when indicator's visibility is changed.
      */
-    virtual void handleVisibilityChange ( BOOL new_visibility );
+    virtual void handleVisibilityChange ( bool new_visibility );
     virtual S32 notifyParent(const LLSD& info);
     virtual void onMouseLeave(S32 x, S32 y, MASK mask);
     virtual void onMouseEnter(S32 x, S32 y, MASK mask);
@@ -115,7 +115,7 @@ public:
     void onInfoBtnClick();
     void onProfileBtnClick();
 
-    /*virtual*/ BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleDoubleClick(S32 x, S32 y, MASK mask);
 
 protected:
     /**
diff --git a/indra/newview/llavatarpropertiesprocessor.cpp b/indra/newview/llavatarpropertiesprocessor.cpp
index 715649e844..edbf81526d 100644
--- a/indra/newview/llavatarpropertiesprocessor.cpp
+++ b/indra/newview/llavatarpropertiesprocessor.cpp
@@ -228,7 +228,7 @@ std::string LLAvatarPropertiesProcessor::paymentInfo(const LLAvatarData* avatar_
     bool transacted = (avatar_data->flags & AVATAR_TRANSACTED);
     bool identified = (avatar_data->flags & AVATAR_IDENTIFIED);
     // Not currently getting set in dataserver/lldataavatar.cpp for privacy considerations
-    //BOOL age_verified = (avatar_data->flags & AVATAR_AGEVERIFIED);
+    //bool age_verified = (avatar_data->flags & AVATAR_AGEVERIFIED);
 
     const char* payment_text;
     if (transacted)
@@ -616,7 +616,7 @@ void LLAvatarPropertiesProcessor::sendPickInfoUpdate(const LLPickData* new_pick)
     msg->addUUID(_PREHASH_CreatorID, new_pick->creator_id);
 
     //legacy var need to be deleted
-    msg->addBOOL(_PREHASH_TopPick, FALSE);
+    msg->addBOOL(_PREHASH_TopPick, false);
 
     // fills in on simulator if null
     msg->addUUID(_PREHASH_ParcelID, new_pick->parcel_id);
diff --git a/indra/newview/llavatarpropertiesprocessor.h b/indra/newview/llavatarpropertiesprocessor.h
index c73cc69e62..a490f3da10 100644
--- a/indra/newview/llavatarpropertiesprocessor.h
+++ b/indra/newview/llavatarpropertiesprocessor.h
@@ -131,7 +131,7 @@ struct LLAvatarData
 struct LLAvatarData::LLGroupData
 {
     U64 group_powers;
-    BOOL accept_notices;
+    bool accept_notices;
     std::string group_title;
     LLUUID group_id;
     std::string group_name;
@@ -143,14 +143,14 @@ struct LLPickData
     LLUUID agent_id;
     LLUUID pick_id;
     LLUUID creator_id;
-    BOOL top_pick;
+    bool top_pick;
     LLUUID parcel_id;
     std::string name;
     std::string desc;
     LLUUID snapshot_id;
     LLVector3d pos_global;
     S32 sort_order;
-    BOOL enabled;
+    bool enabled;
 
     //used only in read requests
     std::string user_name;
diff --git a/indra/newview/llavatarrenderinfoaccountant.cpp b/indra/newview/llavatarrenderinfoaccountant.cpp
index ec9cf2c8b7..b0befa62e6 100644
--- a/indra/newview/llavatarrenderinfoaccountant.cpp
+++ b/indra/newview/llavatarrenderinfoaccountant.cpp
@@ -236,8 +236,6 @@ void LLAvatarRenderInfoAccountant::avatarRenderInfoReportCoro(std::string url, U
             !avatar->isControlAvatar() &&                       // Not part of an animated object
             avatar->getObjectHost() == regionp->getHost())      // Ensure it's on the same region
         {
-            avatar->calculateUpdateRenderComplexity();          // Make sure the numbers are up-to-date
-
             LLSD info = LLSD::emptyMap();
             U32 avatar_complexity = avatar->getVisualComplexity();
             if (avatar_complexity > 0)
diff --git a/indra/newview/llavatarrendernotifier.cpp b/indra/newview/llavatarrendernotifier.cpp
index 61fc9d00f3..07a5c871ae 100644
--- a/indra/newview/llavatarrendernotifier.cpp
+++ b/indra/newview/llavatarrendernotifier.cpp
@@ -306,7 +306,7 @@ void LLHUDRenderNotifier::updateNotificationHUD(hud_complexity_list_t complexity
     }
 
     mHUDComplexityList = complexity;
-    mHUDsCount = mHUDComplexityList.size();
+    mHUDsCount = static_cast<S32>(mHUDComplexityList.size());
 
     static LLCachedControl<U32> show_my_complexity_changes(gSavedSettings, "ShowMyComplexityChanges", 20);
     if (!show_my_complexity_changes)
diff --git a/indra/newview/llblockedlistitem.cpp b/indra/newview/llblockedlistitem.cpp
index 875e8e0bf1..2a0255fb10 100644
--- a/indra/newview/llblockedlistitem.cpp
+++ b/indra/newview/llblockedlistitem.cpp
@@ -51,7 +51,7 @@ LLBlockedListItem::LLBlockedListItem(const LLMute* item)
     buildFromFile("panel_blocked_list_item.xml");
 }
 
-BOOL LLBlockedListItem::postBuild()
+bool LLBlockedListItem::postBuild()
 {
     mTitleCtrl = getChild<LLTextBox>("item_name");
     mTitleCtrl->setValue(mItemName);
@@ -62,27 +62,27 @@ BOOL LLBlockedListItem::postBuild()
     case LLMute::EXTERNAL:
         {
             LLAvatarIconCtrl* avatar_icon = getChild<LLAvatarIconCtrl>("avatar_icon");
-            avatar_icon->setVisible(TRUE);
+            avatar_icon->setVisible(true);
             avatar_icon->setValue(mItemID);
         }
         break;
     case LLMute::GROUP:
         {
             LLGroupIconCtrl* group_icon = getChild<LLGroupIconCtrl>("group_icon");
-            group_icon->setVisible(TRUE);
+            group_icon->setVisible(true);
             group_icon->setValue(mItemID);
         }
         break;
     case LLMute::OBJECT:
     case LLMute::BY_NAME:
-        getChild<LLUICtrl>("object_icon")->setVisible(TRUE);
+        getChild<LLUICtrl>("object_icon")->setVisible(true);
         break;
 
     default:
         break;
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLBlockedListItem::onMouseEnter(S32 x, S32 y, MASK mask)
diff --git a/indra/newview/llblockedlistitem.h b/indra/newview/llblockedlistitem.h
index 3eeefd622b..01894ad11a 100644
--- a/indra/newview/llblockedlistitem.h
+++ b/indra/newview/llblockedlistitem.h
@@ -49,7 +49,7 @@ class LLBlockedListItem : public LLPanel
 public:
 
     LLBlockedListItem(const LLMute* item);
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     void onMouseEnter(S32 x, S32 y, MASK mask);
     void onMouseLeave(S32 x, S32 y, MASK mask);
diff --git a/indra/newview/llblocklist.cpp b/indra/newview/llblocklist.cpp
index 31b83cfb57..89516a8a84 100644
--- a/indra/newview/llblocklist.cpp
+++ b/indra/newview/llblocklist.cpp
@@ -47,7 +47,7 @@ LLBlockList::LLBlockList(const Params& p)
 {
 
     LLMuteList::getInstance()->addObserver(this);
-    mMuteListSize = LLMuteList::getInstance()->getMutes().size();
+    mMuteListSize = static_cast<U32>(LLMuteList::getInstance()->getMutes().size());
 
     // Set up context menu.
     LLUICtrl::CommitCallbackRegistry::ScopedRegistrar registrar;
@@ -92,7 +92,7 @@ void LLBlockList::createList()
 BlockListActionType LLBlockList::getCurrentMuteListActionType()
 {
     BlockListActionType type = NONE;
-    U32 curSize = LLMuteList::getInstance()->getMutes().size();
+    U32 curSize = static_cast<U32>(LLMuteList::getInstance()->getMutes().size());
     if( curSize > mMuteListSize)
         type = ADD;
     else if(curSize < mMuteListSize)
@@ -113,9 +113,9 @@ void LLBlockList::onChangeDetailed(const LLMute &mute)
     refresh();
 }
 
-BOOL LLBlockList::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLBlockList::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLUICtrl::handleRightMouseDown(x, y, mask);
+    bool handled = LLUICtrl::handleRightMouseDown(x, y, mask);
 
     LLToggleableMenu* context_menu = mContextMenu.get();
     if (context_menu && size())
@@ -266,7 +266,7 @@ void LLBlockList::refresh()
             selectItemPair(getItemPair(next_selected), true);
         }
     }
-    mMuteListSize = LLMuteList::getInstance()->getMutes().size();
+    mMuteListSize = static_cast<U32>(LLMuteList::getInstance()->getMutes().size());
 
     // Sort the list.
     sort();
diff --git a/indra/newview/llblocklist.h b/indra/newview/llblocklist.h
index 86598f2da1..64e8246f43 100644
--- a/indra/newview/llblocklist.h
+++ b/indra/newview/llblocklist.h
@@ -54,7 +54,7 @@ public:
     LLBlockList(const Params& p);
     virtual ~LLBlockList();
 
-    virtual BOOL        handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool        handleRightMouseDown(S32 x, S32 y, MASK mask);
     LLToggleableMenu*   getContextMenu() const { return mContextMenu.get(); }
     LLBlockedListItem*  getBlockedItem() const;
 
diff --git a/indra/newview/llbreadcrumbview.cpp b/indra/newview/llbreadcrumbview.cpp
deleted file mode 100644
index 59158f50ba..0000000000
--- a/indra/newview/llbreadcrumbview.cpp
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * @file llbreadcrumbview.cpp
- * @brief UI widget for displaying position in a folder hierarchy and allowing
- * the user to click on a location in the hierarchy.
- *
- * $LicenseInfo:firstyear=2009&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-#include "llviewerprecompiledheaders.h"
-
-#include "llbreadcrumbview.h"
-
-// TODO
diff --git a/indra/newview/llbreadcrumbview.h b/indra/newview/llbreadcrumbview.h
deleted file mode 100644
index 328d39b47e..0000000000
--- a/indra/newview/llbreadcrumbview.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/**
- * @file llbreadcrumbview.h
- * @brief UI widget for displaying position in a folder hierarchy and allowing
- * the user to click on a location in the hierarchy.
- *
- * $LicenseInfo:firstyear=2009&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-#ifndef LLBREADCRUMBVIEW_H
-#define LLBREADCRUMBVIEW_H
-
-#endif // LLBREADCRUMBVIEW_H
diff --git a/indra/newview/llbreastmotion.cpp b/indra/newview/llbreastmotion.cpp
deleted file mode 100644
index 5e445bb360..0000000000
--- a/indra/newview/llbreastmotion.cpp
+++ /dev/null
@@ -1,395 +0,0 @@
-/**
- * @file llbreastmotion.cpp
- * @brief Implementation of LLBreastMotion class.
- *
- * $LicenseInfo:firstyear=2011&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2011, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-//-----------------------------------------------------------------------------
-// Header Files
-//-----------------------------------------------------------------------------
-#include "llviewerprecompiledheaders.h"
-#include "linden_common.h"
-
-#include "m3math.h"
-#include "v3dmath.h"
-
-#include "llbreastmotion.h"
-#include "llcharacter.h"
-#include "llviewercontrol.h"
-#include "llviewervisualparam.h"
-#include "llvoavatarself.h"
-
-#define MIN_REQUIRED_PIXEL_AREA_BREAST_MOTION 0.f;
-
-#define N_PARAMS 2
-
-// User-set params
-static const std::string breast_param_names_user[N_PARAMS] =
-{
-    "Breast_Female_Cleavage_Driver",
-    "Breast_Gravity_Driver"
-};
-
-// Params driven by this algorithm
-static const std::string breast_param_names_driven[N_PARAMS] =
-{
-    "Breast_Female_Cleavage",
-    "Breast_Gravity"
-};
-
-
-
-LLBreastMotion::LLBreastMotion(const LLUUID &id) :
-    LLMotion(id),
-    mCharacter(NULL)
-{
-    mName = "breast_motion";
-    mChestState = new LLJointState;
-
-    mBreastMassParam = (F32)1.0;
-    mBreastDragParam = LLVector3((F32)0.1, (F32)0.1, (F32)0.1);
-    mBreastSmoothingParam = (U32)2;
-    mBreastGravityParam = (F32)0.0;
-
-    mBreastSpringParam = LLVector3((F32)3.0, (F32)0.0, (F32)3.0);
-    mBreastGainParam = LLVector3((F32)50.0, (F32)0.0, (F32)50.0);
-    mBreastDampingParam = LLVector3((F32)0.3, (F32)0.0, (F32)0.3);
-    mBreastMaxVelocityParam = LLVector3((F32)10.0, (F32)0.0, (F32)10.0);
-
-    mBreastParamsUser[0] = mBreastParamsUser[1] = mBreastParamsUser[2] = NULL;
-    mBreastParamsDriven[0] = mBreastParamsDriven[1] = mBreastParamsDriven[2] = NULL;
-
-    mCharLastPosition_world_pt = LLVector3(0,0,0);
-    mCharLastVelocity_local_vec = LLVector3(0,0,0);
-    mCharLastAcceleration_local_vec = LLVector3(0,0,0);
-    mBreastLastPosition_local_pt = LLVector3(0,0,0);
-    mBreastLastUpdatePosition_local_pt = LLVector3(0,0,0);
-    mBreastVelocity_local_vec = LLVector3(0,0,0);
-}
-
-LLBreastMotion::~LLBreastMotion()
-{
-}
-
-BOOL LLBreastMotion::onActivate()
-{
-    return TRUE;
-}
-
-void LLBreastMotion::onDeactivate()
-{
-}
-
-LLMotion::LLMotionInitStatus LLBreastMotion::onInitialize(LLCharacter *character)
-{
-    mCharacter = character;
-
-    if (!mChestState->setJoint(character->getJoint("mChest")))
-    {
-        return STATUS_FAILURE;
-    }
-
-    mChestState->setUsage(LLJointState::ROT);
-    addJointState( mChestState );
-
-    for (U32 i=0; i < N_PARAMS; i++)
-    {
-        mBreastParamsUser[i] = NULL;
-        mBreastParamsDriven[i] = NULL;
-        mBreastParamsMin[i] = 0;
-        mBreastParamsMax[i] = 0;
-        if (breast_param_names_user[i] != "" && breast_param_names_driven[i] != "")
-        {
-            mBreastParamsUser[i] = (LLViewerVisualParam*)mCharacter->getVisualParam(breast_param_names_user[i].c_str());
-            mBreastParamsDriven[i] = (LLViewerVisualParam*)mCharacter->getVisualParam(breast_param_names_driven[i].c_str());
-            if (mBreastParamsDriven[i])
-            {
-                mBreastParamsMin[i] = mBreastParamsDriven[i]->getMinWeight();
-                mBreastParamsMax[i] = mBreastParamsDriven[i]->getMaxWeight();
-            }
-        }
-    }
-
-    mTimer.reset();
-    return STATUS_SUCCESS;
-}
-
-F32 LLBreastMotion::getMinPixelArea()
-{
-    return MIN_REQUIRED_PIXEL_AREA_BREAST_MOTION;
-}
-
-
-F32 LLBreastMotion::calculateTimeDelta()
-{
-    const F32 time = mTimer.getElapsedTimeF32();
-    const F32 time_delta = time - mLastTime;
-    mLastTime = time;
-    return time_delta;
-}
-
-// Local space means "parameter space".
-LLVector3 LLBreastMotion::toLocal(const LLVector3 &world_vector)
-{
-    LLVector3 local_vec(0,0,0);
-
-    LLJoint *chest_joint = mChestState->getJoint();
-    const LLQuaternion world_rot = chest_joint->getWorldRotation();
-
-    // Cleavage
-    LLVector3 breast_dir_world_vec = LLVector3(-1,0,0) * world_rot; // -1 b/c cleavage param changes opposite to direction
-    breast_dir_world_vec.normalize();
-    local_vec[0] = world_vector * breast_dir_world_vec;
-
-    // Up-Down Bounce
-    LLVector3 breast_up_dir_world_vec = LLVector3(0,0,1) * world_rot;
-    breast_up_dir_world_vec.normalize();
-    local_vec[1] = world_vector * breast_up_dir_world_vec;
-
-    return local_vec;
-}
-
-LLVector3 LLBreastMotion::calculateVelocity_local(const F32 time_delta)
-{
-    LLJoint *chest_joint = mChestState->getJoint();
-    const LLVector3 world_pos_pt = chest_joint->getWorldPosition();
-    const LLQuaternion world_rot = chest_joint->getWorldRotation();
-    const LLVector3 last_world_pos_pt = mCharLastPosition_world_pt;
-    const LLVector3 char_velocity_world_vec = (world_pos_pt-last_world_pos_pt) / time_delta;
-    const LLVector3 char_velocity_local_vec = toLocal(char_velocity_world_vec);
-
-    return char_velocity_local_vec;
-}
-
-LLVector3 LLBreastMotion::calculateAcceleration_local(const LLVector3 &new_char_velocity_local_vec,
-                                                      const F32 time_delta)
-{
-    LLVector3 char_acceleration_local_vec = new_char_velocity_local_vec - mCharLastVelocity_local_vec;
-
-    char_acceleration_local_vec =
-        char_acceleration_local_vec * 1.0/mBreastSmoothingParam +
-        mCharLastAcceleration_local_vec * (mBreastSmoothingParam-1.0)/mBreastSmoothingParam;
-
-    mCharLastAcceleration_local_vec = char_acceleration_local_vec;
-
-    return char_acceleration_local_vec;
-}
-
-BOOL LLBreastMotion::onUpdate(F32 time, U8* joint_mask)
-{
-    // Skip if disabled globally.
-    if (!gSavedSettings.getBOOL("AvatarPhysics"))
-    {
-        return TRUE;
-    }
-
-    // Higher LOD is better.  This controls the granularity
-    // and frequency of updates for the motions.
-    const F32 lod_factor = LLVOAvatar::sPhysicsLODFactor;
-    if (lod_factor == 0)
-    {
-        return TRUE;
-    }
-
-    if (mCharacter->getSex() != SEX_FEMALE) return TRUE;
-    const F32 time_delta = calculateTimeDelta();
-    if (time_delta < .01 || time_delta > 10.0) return TRUE;
-
-
-    ////////////////////////////////////////////////////////////////////////////////
-    // Get all parameters and settings
-    //
-
-    mBreastMassParam = mCharacter->getVisualParamWeight("Breast_Physics_Mass");
-    mBreastSmoothingParam = (U32)(mCharacter->getVisualParamWeight("Breast_Physics_Smoothing"));
-    mBreastGravityParam = mCharacter->getVisualParamWeight("Breast_Physics_Gravity");
-
-    mBreastSpringParam[0] = mCharacter->getVisualParamWeight("Breast_Physics_Side_Spring");
-    mBreastGainParam[0] = mCharacter->getVisualParamWeight("Breast_Physics_Side_Gain");
-    mBreastDampingParam[0] = mCharacter->getVisualParamWeight("Breast_Physics_Side_Damping");
-    mBreastMaxVelocityParam[0] = mCharacter->getVisualParamWeight("Breast_Physics_Side_Max_Velocity");
-    mBreastDragParam[0] = mCharacter->getVisualParamWeight("Breast_Physics_Side_Drag");
-
-    mBreastSpringParam[1] = mCharacter->getVisualParamWeight("Breast_Physics_UpDown_Spring");
-    mBreastGainParam[1] = mCharacter->getVisualParamWeight("Breast_Physics_UpDown_Gain");
-    mBreastDampingParam[1] = mCharacter->getVisualParamWeight("Breast_Physics_UpDown_Damping");
-    mBreastMaxVelocityParam[1] = mCharacter->getVisualParamWeight("Breast_Physics_UpDown_Max_Velocity");
-    mBreastDragParam[1] = mCharacter->getVisualParamWeight("Breast_Physics_UpDown_Drag");
-
-
-    // Get the current morph parameters.
-    LLVector3 breast_user_local_pt(0,0,0);
-    for (U32 i=0; i < N_PARAMS; i++)
-    {
-        if (mBreastParamsUser[i] != NULL)
-        {
-            breast_user_local_pt[i] = mBreastParamsUser[i]->getWeight();
-        }
-    }
-
-    LLVector3 breast_current_local_pt = mBreastLastPosition_local_pt;
-
-    //
-    // End parameters and settings
-    ////////////////////////////////////////////////////////////////////////////////
-
-
-    ////////////////////////////////////////////////////////////////////////////////
-    // Calculate velocity and acceleration in parameter space.
-    //
-
-    const LLVector3 char_velocity_local_vec = calculateVelocity_local(time_delta);
-    const LLVector3 char_acceleration_local_vec = calculateAcceleration_local(char_velocity_local_vec, time_delta);
-    mCharLastVelocity_local_vec = char_velocity_local_vec;
-
-    LLJoint *chest_joint = mChestState->getJoint();
-    mCharLastPosition_world_pt = chest_joint->getWorldPosition();
-
-    //
-    // End velocity and acceleration
-    ////////////////////////////////////////////////////////////////////////////////
-
-
-    ////////////////////////////////////////////////////////////////////////////////
-    // Calculate the total force
-    //
-
-    // Spring force is a restoring force towards the original user-set breast position.
-    // F = kx
-    const LLVector3 spring_length_local = breast_current_local_pt-breast_user_local_pt;
-    LLVector3 force_spring_local_vec = -spring_length_local; force_spring_local_vec *= mBreastSpringParam;
-
-    // Acceleration is the force that comes from the change in velocity of the torso.
-    // F = ma + mg
-    LLVector3 force_accel_local_vec = char_acceleration_local_vec * mBreastMassParam;
-    const LLVector3 force_gravity_local_vec = toLocal(LLVector3(0,0,1))* mBreastGravityParam * mBreastMassParam;
-    force_accel_local_vec += force_gravity_local_vec;
-    force_accel_local_vec *= mBreastGainParam;
-
-    // Damping is a restoring force that opposes the current velocity.
-    // F = -kv
-    LLVector3 force_damping_local_vec = -mBreastDampingParam;
-    force_damping_local_vec *= mBreastVelocity_local_vec;
-
-    // Drag is a force imparted by velocity, intuitively it is similar to wind resistance.
-    // F = .5v*v
-    LLVector3 force_drag_local_vec = .5*char_velocity_local_vec;
-    force_drag_local_vec *= char_velocity_local_vec;
-    force_drag_local_vec *= mBreastDragParam[0];
-
-    LLVector3 force_net_local_vec =
-        force_accel_local_vec +
-        force_gravity_local_vec +
-        force_spring_local_vec +
-        force_damping_local_vec +
-        force_drag_local_vec;
-
-    //
-    // End total force
-    ////////////////////////////////////////////////////////////////////////////////
-
-
-    ////////////////////////////////////////////////////////////////////////////////
-    // Calculate new params
-    //
-
-    // Calculate the new acceleration based on the net force.
-    // a = F/m
-    LLVector3 acceleration_local_vec = force_net_local_vec / mBreastMassParam;
-    mBreastVelocity_local_vec += acceleration_local_vec;
-    mBreastVelocity_local_vec.clamp(-mBreastMaxVelocityParam*100.0, mBreastMaxVelocityParam*100.0);
-
-    // Temporary debugging setting to cause all avatars to move, for profiling purposes.
-    if (gSavedSettings.getBOOL("AvatarPhysicsTest"))
-    {
-        mBreastVelocity_local_vec[0] = sin(mTimer.getElapsedTimeF32()*4.0)*5.0;
-        mBreastVelocity_local_vec[1] = sin(mTimer.getElapsedTimeF32()*3.0)*5.0;
-    }
-    // Calculate the new parameters and clamp them to the min/max ranges.
-    LLVector3 new_local_pt = breast_current_local_pt + mBreastVelocity_local_vec*time_delta;
-    new_local_pt.clamp(mBreastParamsMin,mBreastParamsMax);
-
-    // Set the new parameters.
-    for (U32 i=0; i < 3; i++)
-    {
-        // If the param is disabled, just set the param to the user value.
-        if (mBreastMaxVelocityParam[i] == 0)
-        {
-            new_local_pt[i] = breast_user_local_pt[i];
-        }
-        if (mBreastParamsDriven[i])
-        {
-            mCharacter->setVisualParamWeight(mBreastParamsDriven[i],
-                                             new_local_pt[i]);
-        }
-    }
-
-    mBreastLastPosition_local_pt = new_local_pt;
-
-    //
-    // End calculate new params
-    ////////////////////////////////////////////////////////////////////////////////
-
-
-    ////////////////////////////////////////////////////////////////////////////////
-    // Conditionally update the visual params
-    //
-
-    // Updating the visual params (i.e. what the user sees) is fairly expensive.
-    // So only update if the params have changed enough, and also take into account
-    // the graphics LOD settings.
-
-    // For non-self, if the avatar is small enough visually, then don't update.
-    const BOOL is_self = (dynamic_cast<LLVOAvatarSelf *>(this) != NULL);
-    if (!is_self)
-    {
-        const F32 area_for_max_settings = 0.0;
-        const F32 area_for_min_settings = 1400.0;
-
-        const F32 area_for_this_setting = area_for_max_settings + (area_for_min_settings-area_for_max_settings)*(1.0-lod_factor);
-        const F32 pixel_area = fsqrtf(mCharacter->getPixelArea());
-        if (pixel_area < area_for_this_setting)
-        {
-            return TRUE;
-        }
-    }
-
-    // If the parameter hasn't changed enough, then don't update.
-    LLVector3 position_diff = mBreastLastUpdatePosition_local_pt-new_local_pt;
-    for (U32 i=0; i < 3; i++)
-    {
-        const F32 min_delta = (1.0-lod_factor)*(mBreastParamsMax[i]-mBreastParamsMin[i])/2.0;
-        if (llabs(position_diff[i]) > min_delta)
-        {
-            mCharacter->updateVisualParams();
-            mBreastLastUpdatePosition_local_pt = new_local_pt;
-            return TRUE;
-        }
-    }
-
-    //
-    // End update visual params
-    ////////////////////////////////////////////////////////////////////////////////
-
-    return TRUE;
-}
diff --git a/indra/newview/llbreastmotion.h b/indra/newview/llbreastmotion.h
deleted file mode 100644
index f1c508d4b7..0000000000
--- a/indra/newview/llbreastmotion.h
+++ /dev/null
@@ -1,154 +0,0 @@
-/**
- * @file llbreastmotion.h
- * @brief Implementation of LLBreastMotion class.
- *
- * $LicenseInfo:firstyear=2011&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2011, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLBREASTMOTION_H
-#define LL_LLBREASTMOTION_H
-
-//-----------------------------------------------------------------------------
-// Header files
-//-----------------------------------------------------------------------------
-#include "llmotion.h"
-#include "llframetimer.h"
-
-#define BREAST_MOTION_FADEIN_TIME 1.0f
-#define BREAST_MOTION_FADEOUT_TIME 1.0f
-
-class LLViewerVisualParam;
-
-//-----------------------------------------------------------------------------
-// class LLBreastMotion
-//-----------------------------------------------------------------------------
-class LLBreastMotion :
-    public LLMotion
-{
-public:
-    // Constructor
-    LLBreastMotion(const LLUUID &id);
-
-    // Destructor
-    virtual ~LLBreastMotion();
-
-public:
-    //-------------------------------------------------------------------------
-    // functions to support MotionController and MotionRegistry
-    //-------------------------------------------------------------------------
-
-    // static constructor
-    // all subclasses must implement such a function and register it
-    static LLMotion *create(const LLUUID &id) { return new LLBreastMotion(id); }
-
-public:
-    //-------------------------------------------------------------------------
-    // animation callbacks to be implemented by subclasses
-    //-------------------------------------------------------------------------
-
-    // motions must specify whether or not they loop
-    virtual BOOL getLoop() { return TRUE; }
-
-    // motions must report their total duration
-    virtual F32 getDuration() { return 0.0; }
-
-    // motions must report their "ease in" duration
-    virtual F32 getEaseInDuration() { return BREAST_MOTION_FADEIN_TIME; }
-
-    // motions must report their "ease out" duration.
-    virtual F32 getEaseOutDuration() { return BREAST_MOTION_FADEOUT_TIME; }
-
-    // called to determine when a motion should be activated/deactivated based on avatar pixel coverage
-    virtual F32 getMinPixelArea();
-
-    // motions must report their priority
-    virtual LLJoint::JointPriority getPriority() { return LLJoint::MEDIUM_PRIORITY; }
-
-    virtual LLMotionBlendType getBlendType() { return ADDITIVE_BLEND; }
-
-    // run-time (post constructor) initialization,
-    // called after parameters have been set
-    // must return true to indicate success and be available for activation
-    virtual LLMotionInitStatus onInitialize(LLCharacter *character);
-
-    // called when a motion is activated
-    // must return TRUE to indicate success, or else
-    // it will be deactivated
-    virtual BOOL onActivate();
-
-    // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
-
-    // called when a motion is deactivated
-    virtual void onDeactivate();
-
-protected:
-    LLVector3 toLocal(const LLVector3 &world_vector);
-    LLVector3 calculateVelocity_local(const F32 time_delta);
-    LLVector3 calculateAcceleration_local(const LLVector3 &new_char_velocity_local_vec,
-                                          const F32 time_delta);
-    F32 calculateTimeDelta();
-private:
-    //-------------------------------------------------------------------------
-    // joint states to be animated
-    //-------------------------------------------------------------------------
-    LLPointer<LLJointState> mChestState;
-    LLCharacter*        mCharacter;
-
-
-    //-------------------------------------------------------------------------
-    // miscellaneous parameters
-    //-------------------------------------------------------------------------
-    LLViewerVisualParam *mBreastParamsUser[3];
-    LLViewerVisualParam *mBreastParamsDriven[3];
-    LLVector3           mBreastParamsMin;
-    LLVector3           mBreastParamsMax;
-
-    LLVector3           mCharLastPosition_world_pt; // Last position of the avatar
-    LLVector3           mCharLastVelocity_local_vec; // How fast the character is moving
-    LLVector3           mCharLastAcceleration_local_vec; // Change in character velocity
-
-    LLVector3           mBreastLastPosition_local_pt; // Last parameters for breast
-    LLVector3           mBreastVelocity_local_vec; // How fast the breast params are moving
-    LLVector3           mBreastLastUpdatePosition_local_pt; // Last parameters when visual update was sent
-
-
-    F32 mBreastMassParam;
-    F32 mBreastGravityParam;
-    U32 mBreastSmoothingParam;
-
-    LLVector3 mBreastSpringParam;
-    LLVector3 mBreastDampingParam;
-    LLVector3 mBreastGainParam;
-    LLVector3 mBreastMaxVelocityParam;
-    LLVector3 mBreastDragParam;
-
-    LLFrameTimer    mTimer;
-    F32             mLastTime;
-
-    U32            mFileTicks;
-};
-
-#endif // LL_LLBREASTMOTION_H
-
diff --git a/indra/newview/llbuycurrencyhtml.cpp b/indra/newview/llbuycurrencyhtml.cpp
index 115e68b396..e6c4d44573 100644
--- a/indra/newview/llbuycurrencyhtml.cpp
+++ b/indra/newview/llbuycurrencyhtml.cpp
@@ -138,9 +138,9 @@ void LLBuyCurrencyHTML::showDialog( bool specific_sum_requested, const std::stri
         buy_currency_floater->navigateToFinalURL();
 
         // make it visible and raise to front
-        BOOL visible = TRUE;
+        bool visible = true;
         buy_currency_floater->setVisible( visible );
-        BOOL take_focus = TRUE;
+        bool take_focus = true;
         buy_currency_floater->setFrontmost( take_focus );
 
         // spec calls for floater to be centered on client window
diff --git a/indra/newview/llcallbacklist.cpp b/indra/newview/llcallbacklist.cpp
index 1674750351..c474f2885b 100644
--- a/indra/newview/llcallbacklist.cpp
+++ b/indra/newview/llcallbacklist.cpp
@@ -191,10 +191,10 @@ public:
     }
 
 private:
-    BOOL tick()
+    bool tick()
     {
         mCallable();
-        return TRUE;
+        return true;
     }
 
     nullary_func_t mCallable;
@@ -215,7 +215,7 @@ public:
     {
     }
 private:
-    BOOL tick()
+    bool tick()
     {
         return mCallable();
     }
diff --git a/indra/newview/llcallingcard.cpp b/indra/newview/llcallingcard.cpp
index f5bc2343fb..039164cd6e 100644
--- a/indra/newview/llcallingcard.cpp
+++ b/indra/newview/llcallingcard.cpp
@@ -26,16 +26,11 @@
 
 #include "llviewerprecompiledheaders.h"
 
-#if LL_WINDOWS
-#pragma warning( disable : 4800 ) // performance warning in <functional>
-#endif
-
 #include "llcallingcard.h"
 
 #include <algorithm>
 
 #include "indra_constants.h"
-//#include "llcachename.h"
 #include "llstl.h"
 #include "lltimer.h"
 #include "lluuid.h"
@@ -99,7 +94,7 @@ LLAvatarTracker::LLAvatarTracker() :
     mTrackingData(NULL),
     mTrackedAgentValid(false),
     mModifyMask(0x0),
-    mIsNotifyObservers(FALSE)
+    mIsNotifyObservers(false)
 {
 }
 
@@ -497,7 +492,7 @@ void LLAvatarTracker::notifyObservers()
         return;
     }
     LL_PROFILE_ZONE_SCOPED
-    mIsNotifyObservers = TRUE;
+    mIsNotifyObservers = true;
 
     observer_list_t observers(mObservers);
     observer_list_t::iterator it = observers.begin();
@@ -514,7 +509,7 @@ void LLAvatarTracker::notifyObservers()
 
     mModifyMask = LLFriendObserver::NONE;
     mChangedBuddyIDs.clear();
-    mIsNotifyObservers = FALSE;
+    mIsNotifyObservers = false;
 }
 
 void LLAvatarTracker::addParticularFriendObserver(const LLUUID& buddy_id, LLFriendObserver* observer)
@@ -685,7 +680,7 @@ void LLAvatarTracker::processNotify(LLMessageSystem* msg, bool online)
 {
     LL_PROFILE_ZONE_SCOPED
     S32 count = msg->getNumberOfBlocksFast(_PREHASH_AgentBlock);
-    BOOL chat_notify = gSavedSettings.getBOOL("ChatOnlineNotification");
+    bool chat_notify = gSavedSettings.getBOOL("ChatOnlineNotification");
 
     LL_DEBUGS() << "Received " << count << " online notifications **** " << LL_ENDL;
     if(count > 0)
@@ -749,7 +744,7 @@ static void on_avatar_name_cache_notify(const LLUUID& agent_id,
         notification =
             LLNotifications::instance().add("FriendOnlineOffline",
                                      args,
-                                     payload.with("respond_on_mousedown", TRUE),
+                                     payload.with("respond_on_mousedown", true),
                                      boost::bind(&LLAvatarActions::startIM, agent_id));
     }
     else
diff --git a/indra/newview/llcallingcard.h b/indra/newview/llcallingcard.h
index 07de0ff3ce..48b93fdf9d 100644
--- a/indra/newview/llcallingcard.h
+++ b/indra/newview/llcallingcard.h
@@ -210,7 +210,7 @@ private:
     LLAvatarTracker(const LLAvatarTracker&);
     bool operator==(const LLAvatarTracker&);
 
-    BOOL mIsNotifyObservers;
+    bool mIsNotifyObservers;
 
 public:
     // don't you dare create or delete this object
diff --git a/indra/newview/llchannelmanager.cpp b/indra/newview/llchannelmanager.cpp
index f66a9865fc..060430862b 100644
--- a/indra/newview/llchannelmanager.cpp
+++ b/indra/newview/llchannelmanager.cpp
@@ -161,7 +161,7 @@ void LLChannelManager::onStartUpToastClose()
 {
     if(mStartUpChannel)
     {
-        mStartUpChannel->setVisible(FALSE);
+        mStartUpChannel->setVisible(false);
         mStartUpChannel->closeStartUpToast();
         removeChannelByID(STARTUP_CHANNEL_UUID);
         mStartUpChannel = NULL;
@@ -261,8 +261,8 @@ LLNotificationsUI::LLScreenChannel* LLChannelManager::getNotificationScreenChann
 
     if (channel == NULL)
     {
-        LL_WARNS() << "Can't find screen channel by Notification Channel UUID" << LL_ENDL;
-        llassert(!"Can't find screen channel by Notification Channel UUID");
+        LL_WARNS() << "Can't find screen channel by NotificationChannelUUID" << LL_ENDL;
+        llassert(!"Can't find screen channel by NotificationChannelUUID");
     }
 
     return channel;
diff --git a/indra/newview/llchatbar.cpp b/indra/newview/llchatbar.cpp
index 705552a5c1..4f90db17c0 100644
--- a/indra/newview/llchatbar.cpp
+++ b/indra/newview/llchatbar.cpp
@@ -63,7 +63,7 @@
 //
 // Globals
 //
-const F32 AGENT_TYPING_TIMEOUT = 5.f;   // seconds
+constexpr F32 AGENT_TYPING_TIMEOUT = 5.f;   // seconds
 
 LLChatBar *gChatBar = NULL;
 
@@ -89,11 +89,11 @@ LLChatBar::LLChatBar()
     mInputEditor(NULL),
     mGestureLabelTimer(),
     mLastSpecialChatChannel(0),
-    mIsBuilt(FALSE),
+    mIsBuilt(false),
     mGestureCombo(NULL),
     mObserver(NULL)
 {
-    //setIsChrome(TRUE);
+    //setIsChrome(true);
 }
 
 
@@ -105,7 +105,7 @@ LLChatBar::~LLChatBar()
     // LLView destructor cleans up children
 }
 
-BOOL LLChatBar::postBuild()
+bool LLChatBar::postBuild()
 {
     getChild<LLUICtrl>("Say")->setCommitCallback(boost::bind(&LLChatBar::onClickSay, this, _1));
 
@@ -118,18 +118,18 @@ BOOL LLChatBar::postBuild()
     mInputEditor->setKeystrokeCallback(&onInputEditorKeystroke, this);
     mInputEditor->setFocusLostCallback(boost::bind(&LLChatBar::onInputEditorFocusLost));
     mInputEditor->setFocusReceivedCallback(boost::bind(&LLChatBar::onInputEditorGainFocus));
-    mInputEditor->setCommitOnFocusLost( FALSE );
-    mInputEditor->setRevertOnEsc( FALSE );
-    mInputEditor->setIgnoreTab(TRUE);
-    mInputEditor->setPassDelete(TRUE);
-    mInputEditor->setReplaceNewlinesWithSpaces(FALSE);
+    mInputEditor->setCommitOnFocusLost( false );
+    mInputEditor->setRevertOnEsc( false );
+    mInputEditor->setIgnoreTab(true);
+    mInputEditor->setPassDelete(true);
+    mInputEditor->setReplaceNewlinesWithSpaces(false);
 
     mInputEditor->setMaxTextLength(DB_CHAT_MSG_STR_LEN);
-    mInputEditor->setEnableLineHistory(TRUE);
+    mInputEditor->setEnableLineHistory(true);
 
-    mIsBuilt = TRUE;
+    mIsBuilt = true;
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------
@@ -137,9 +137,9 @@ BOOL LLChatBar::postBuild()
 //-----------------------------------------------------------------------
 
 // virtual
-BOOL LLChatBar::handleKeyHere( KEY key, MASK mask )
+bool LLChatBar::handleKeyHere( KEY key, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if( KEY_RETURN == key )
     {
@@ -147,13 +147,13 @@ BOOL LLChatBar::handleKeyHere( KEY key, MASK mask )
         {
             // shout
             sendChat(CHAT_TYPE_SHOUT);
-            handled = TRUE;
+            handled = true;
         }
         else if (mask == MASK_NONE)
         {
             // say
             sendChat( CHAT_TYPE_NORMAL );
-            handled = TRUE;
+            handled = true;
         }
     }
     // only do this in main chatbar
@@ -161,7 +161,7 @@ BOOL LLChatBar::handleKeyHere( KEY key, MASK mask )
     {
         stopChat();
 
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
@@ -199,7 +199,7 @@ void LLChatBar::refreshGestures()
         mGestureCombo->clearRows();
 
         // collect list of unique gestures
-        std::map <std::string, BOOL> unique;
+        std::map <std::string, bool> unique;
         LLGestureMgr::item_map_t::const_iterator it;
         const LLGestureMgr::item_map_t& active_gestures = LLGestureMgr::instance().getActiveGestures();
         for (it = active_gestures.begin(); it != active_gestures.end(); ++it)
@@ -209,13 +209,13 @@ void LLChatBar::refreshGestures()
             {
                 if (!gesture->mTrigger.empty())
                 {
-                    unique[gesture->mTrigger] = TRUE;
+                    unique[gesture->mTrigger] = true;
                 }
             }
         }
 
         // add unique gestures
-        std::map <std::string, BOOL>::iterator it2;
+        std::map <std::string, bool>::iterator it2;
         for (it2 = unique.begin(); it2 != unique.end(); ++it2)
         {
             mGestureCombo->addSimpleElement((*it2).first);
@@ -238,13 +238,13 @@ void LLChatBar::refreshGestures()
 }
 
 // Move the cursor to the correct input field.
-void LLChatBar::setKeyboardFocus(BOOL focus)
+void LLChatBar::setKeyboardFocus(bool focus)
 {
     if (focus)
     {
         if (mInputEditor)
         {
-            mInputEditor->setFocus(TRUE);
+            mInputEditor->setFocus(true);
             mInputEditor->selectAll();
         }
     }
@@ -254,13 +254,13 @@ void LLChatBar::setKeyboardFocus(BOOL focus)
         {
             mInputEditor->deselect();
         }
-        setFocus(FALSE);
+        setFocus(false);
     }
 }
 
 
 // Ignore arrow keys in chat bar
-void LLChatBar::setIgnoreArrowKeys(BOOL b)
+void LLChatBar::setIgnoreArrowKeys(bool b)
 {
     if (mInputEditor)
     {
@@ -268,7 +268,7 @@ void LLChatBar::setIgnoreArrowKeys(BOOL b)
     }
 }
 
-BOOL LLChatBar::inputEditorHasFocus()
+bool LLChatBar::inputEditorHasFocus()
 {
     return mInputEditor && mInputEditor->hasFocus();
 }
@@ -409,15 +409,15 @@ void LLChatBar::startChat(const char* line)
     //TODO* remove DUMMY chat
     //if(gBottomTray && gBottomTray->getChatBox())
     //{
-    //  gBottomTray->setVisible(TRUE);
-    //  gBottomTray->getChatBox()->setFocus(TRUE);
+    //  gBottomTray->setVisible(true);
+    //  gBottomTray->getChatBox()->setFocus(true);
     //}
 
     // *TODO Vadim: Why was this code commented out?
 
-//  gChatBar->setVisible(TRUE);
-//  gChatBar->setKeyboardFocus(TRUE);
-//  gSavedSettings.setBOOL("ChatVisible", TRUE);
+//  gChatBar->setVisible(true);
+//  gChatBar->setKeyboardFocus(true);
+//  gSavedSettings.setBOOL("ChatVisible", true);
 //
 //  if (line && gChatBar->mInputEditor)
 //  {
@@ -436,13 +436,13 @@ void LLChatBar::stopChat()
     //TODO* remove DUMMY chat
     //if(gBottomTray && gBottomTray->getChatBox())
     ///{
-    //  gBottomTray->getChatBox()->setFocus(FALSE);
+    //  gBottomTray->getChatBox()->setFocus(false);
     //}
 
     // *TODO Vadim: Why was this code commented out?
 
 //  // In simple UI mode, we never release focus from the chat bar
-//  gChatBar->setKeyboardFocus(FALSE);
+//  gChatBar->setKeyboardFocus(false);
 //
 //  // If we typed a movement key and pressed return during the
 //  // same frame, the keyboard handlers will see the key as having
@@ -454,8 +454,8 @@ void LLChatBar::stopChat()
 //  gAgent.stopTyping();
 //
 //  // hide chat bar so it doesn't grab focus back
-//  gChatBar->setVisible(FALSE);
-//  gSavedSettings.setBOOL("ChatVisible", FALSE);
+//  gChatBar->setVisible(false);
+//  gSavedSettings.setBOOL("ChatVisible", false);
 }
 
 // static
@@ -470,7 +470,7 @@ void LLChatBar::onInputEditorKeystroke( LLLineEditor* caller, void* userdata )
     // to eat trailing spaces that might be part of a gesture.
     LLWStringUtil::trimHead(raw_text);
 
-    S32 length = raw_text.length();
+    auto length = raw_text.length();
 
     if( (length > 0) && (raw_text[0] != '/') )  // forward slash is used for escape (eg. emote) sequences
     {
@@ -518,7 +518,7 @@ void LLChatBar::onInputEditorKeystroke( LLLineEditor* caller, void* userdata )
 
                 // Select to end of line, starting from the character
                 // after the last one the user typed.
-                self->mInputEditor->setSelection(length, outlength);
+                self->mInputEditor->setSelection(static_cast<S32>(length), outlength);
             }
         }
 
@@ -557,16 +557,16 @@ void LLChatBar::onClickSay( LLUICtrl* ctrl )
     sendChat(chat_type);
 }
 
-void LLChatBar::sendChatFromViewer(const std::string &utf8text, EChatType type, BOOL animate)
+void LLChatBar::sendChatFromViewer(const std::string &utf8text, EChatType type, bool animate)
 {
     sendChatFromViewer(utf8str_to_wstring(utf8text), type, animate);
 }
 
-void LLChatBar::sendChatFromViewer(const LLWString &wtext, EChatType type, BOOL animate)
+void LLChatBar::sendChatFromViewer(const LLWString &wtext, EChatType type, bool animate)
 {
     // as soon as we say something, we no longer care about teaching the user
     // how to chat
-    gWarningSettings.setBOOL("FirstOtherChatBeforeUser", FALSE);
+    gWarningSettings.setBOOL("FirstOtherChatBeforeUser", false);
 
     // Look for "/20 foo" channel chats.
     S32 channel = 0;
@@ -641,13 +641,13 @@ void LLChatBar::onCommitGesture(LLUICtrl* ctrl)
         if (!revised_text.empty())
         {
             // Don't play nodding animation
-            sendChatFromViewer(revised_text, CHAT_TYPE_NORMAL, FALSE);
+            sendChatFromViewer(revised_text, CHAT_TYPE_NORMAL, false);
         }
     }
     mGestureLabelTimer.start();
     if (mGestureCombo != NULL)
     {
         // free focus back to chat bar
-        mGestureCombo->setFocus(FALSE);
+        mGestureCombo->setFocus(false);
     }
 }
diff --git a/indra/newview/llchatbar.h b/indra/newview/llchatbar.h
index 1217976e2e..5eede61708 100644
--- a/indra/newview/llchatbar.h
+++ b/indra/newview/llchatbar.h
@@ -47,20 +47,20 @@ public:
     // constructor for inline chat-bars (e.g. hosted in chat history window)
     LLChatBar();
     ~LLChatBar();
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool handleKeyHere(KEY key, MASK mask);
 
     void        refresh();
     void        refreshGestures();
 
     // Move cursor into chat input field.
-    void        setKeyboardFocus(BOOL b);
+    void        setKeyboardFocus(bool b);
 
     // Ignore arrow keys for chat bar
-    void        setIgnoreArrowKeys(BOOL b);
+    void        setIgnoreArrowKeys(bool b);
 
-    BOOL        inputEditorHasFocus();
+    bool        inputEditorHasFocus();
     std::string getCurrentChat();
 
     // since chat bar logic is reused for chat history
@@ -69,8 +69,8 @@ public:
 
     // Send a chat (after stripping /20foo channel chats).
     // "Animate" means the nodding animation for regular text.
-    void        sendChatFromViewer(const LLWString &wtext, EChatType type, BOOL animate);
-    void        sendChatFromViewer(const std::string &utf8text, EChatType type, BOOL animate);
+    void        sendChatFromViewer(const LLWString &wtext, EChatType type, bool animate);
+    void        sendChatFromViewer(const std::string &utf8text, EChatType type, bool animate);
 
     // If input of the form "/20foo" or "/20 foo", returns "foo" and channel 20.
     // Otherwise returns input and channel 0.
@@ -101,7 +101,7 @@ protected:
     // Which non-zero channel did we last chat on?
     S32             mLastSpecialChatChannel;
 
-    BOOL            mIsBuilt;
+    bool            mIsBuilt;
     LLComboBox*     mGestureCombo;
 
     LLChatBarGestureObserver* mObserver;
diff --git a/indra/newview/llchathistory.cpp b/indra/newview/llchathistory.cpp
index 4a08eace62..fc50691ece 100644
--- a/indra/newview/llchathistory.cpp
+++ b/indra/newview/llchathistory.cpp
@@ -90,7 +90,7 @@ public:
         }
 
         LLUUID object_id;
-        if (!object_id.set(params[0], FALSE))
+        if (!object_id.set(params[0], false))
         {
             return false;
         }
@@ -155,7 +155,7 @@ public:
         }
     }
 
-    BOOL handleMouseUp(S32 x, S32 y, MASK mask)
+    bool handleMouseUp(S32 x, S32 y, MASK mask)
     {
         return LLPanel::handleMouseUp(x,y,mask);
     }
@@ -577,7 +577,7 @@ public:
         return false;
     }
 
-    BOOL postBuild()
+    bool postBuild()
     {
         setDoubleClickCallback(boost::bind(&LLChatHistoryHeader::showInspector, this));
 
@@ -591,7 +591,7 @@ public:
         if (mInfoCtrl)
         {
             mInfoCtrl->setCommitCallback(boost::bind(&LLChatHistoryHeader::onClickInfoCtrl, mInfoCtrl));
-            mInfoCtrl->setVisible(FALSE);
+            mInfoCtrl->setVisible(false);
         }
         else
         {
@@ -619,12 +619,12 @@ public:
         return  child->pointInView(local_x, local_y);
     }
 
-    BOOL handleRightMouseDown(S32 x, S32 y, MASK mask)
+    bool handleRightMouseDown(S32 x, S32 y, MASK mask)
     {
         if(pointInChild("avatar_icon",x,y) || pointInChild("user_name",x,y))
         {
             showContextMenu(x,y);
-            return TRUE;
+            return true;
         }
 
         return LLPanel::handleRightMouseDown(x,y,mask);
@@ -695,7 +695,7 @@ public:
             updateMinUserNameWidth();
             LLColor4 sep_color = LLUIColorTable::instance().getColor("ChatTeleportSeparatorColor");
             setTransparentColor(sep_color);
-            mTimeBoxTextBox->setVisible(FALSE);
+            mTimeBoxTextBox->setVisible(false);
         }
         else if (chat.mFromName.empty()
                  || mSourceType == CHAT_SOURCE_SYSTEM)
@@ -725,8 +725,8 @@ public:
                  mSourceType == CHAT_SOURCE_AGENT)
         {
             //if it's an avatar name with a username add formatting
-            S32 username_start = chat.mFromName.rfind(" (");
-            S32 username_end = chat.mFromName.rfind(')');
+            auto username_start = chat.mFromName.rfind(" (");
+            auto username_end = chat.mFromName.rfind(')');
 
             if (username_start != std::string::npos &&
                 username_end == (chat.mFromName.length() - 1))
@@ -744,7 +744,7 @@ public:
                     style_params_name.font.name("SansSerifSmall");
                     style_params_name.font.style("NORMAL");
                     style_params_name.readonly_color(userNameColor);
-                    user_name->appendText("  - " + username, FALSE, style_params_name);
+                    user_name->appendText("  - " + username, false, style_params_name);
                 }
             }
             else
@@ -830,7 +830,7 @@ public:
             user_name->reshape(user_name_rect.getWidth(), user_name_rect.getHeight());
             user_name->setRect(user_name_rect);
 
-            time_box->setVisible(TRUE);
+            time_box->setVisible(true);
         }
 
         LLPanel::draw();
@@ -982,7 +982,7 @@ protected:
 
     void hideInfoCtrl()
     {
-        mInfoCtrl->setVisible(FALSE);
+        mInfoCtrl->setVisible(false);
     }
 
 private:
@@ -1042,7 +1042,7 @@ private:
             style_params_name.font.name("SansSerifSmall");
             style_params_name.font.style("NORMAL");
             style_params_name.readonly_color(userNameColor);
-            user_name->appendText("  - " + av_name.getUserName(), FALSE, style_params_name);
+            user_name->appendText("  - " + av_name.getUserName(), false, style_params_name);
         }
         setToolTip( av_name.getUserName() );
         // name might have changed, update width
@@ -1223,7 +1223,7 @@ void LLChatHistory::appendMessage(const LLChat& chat, const LLSD &args, const LL
     if (mNotifyAboutUnreadMsg && !mEditor->scrolledToEnd() && !from_me && !chat.mFromName.empty())
     {
         mUnreadChatSources.insert(chat.mFromName);
-        mMoreChatPanel->setVisible(TRUE);
+        mMoreChatPanel->setVisible(true);
         std::string chatters;
         for (const std::string& source : mUnreadChatSources)
         {
@@ -1541,7 +1541,7 @@ void LLChatHistory::draw()
     if (mEditor->scrolledToEnd())
     {
         mUnreadChatSources.clear();
-        mMoreChatPanel->setVisible(FALSE);
+        mMoreChatPanel->setVisible(false);
     }
 
     LLUICtrl::draw();
diff --git a/indra/newview/llchatitemscontainerctrl.cpp b/indra/newview/llchatitemscontainerctrl.cpp
index 2b875c708d..d517f5a19d 100644
--- a/indra/newview/llchatitemscontainerctrl.cpp
+++ b/indra/newview/llchatitemscontainerctrl.cpp
@@ -43,9 +43,9 @@
 
 #include "llslurl.h"
 
-static const S32 msg_left_offset = 10;
-static const S32 msg_right_offset = 10;
-static const S32 msg_height_pad = 5;
+static constexpr S32 msg_left_offset = 10;
+static constexpr S32 msg_right_offset = 10;
+static constexpr S32 msg_height_pad = 5;
 
 //*******************************************************************************************************************
 // LLObjectHandler
@@ -62,7 +62,7 @@ public:
         if (params.size() < 2) return false;
 
         LLUUID object_id;
-        if (!object_id.set(params[0], FALSE))
+        if (!object_id.set(params[0], false))
         {
             return false;
         }
@@ -93,7 +93,7 @@ LLFloaterIMNearbyChatToastPanel* LLFloaterIMNearbyChatToastPanel::createInstance
     return item;
 }
 
-void    LLFloaterIMNearbyChatToastPanel::reshape        (S32 width, S32 height, BOOL called_from_parent )
+void    LLFloaterIMNearbyChatToastPanel::reshape        (S32 width, S32 height, bool called_from_parent )
 {
     LLPanel::reshape(width, height,called_from_parent);
 
@@ -122,7 +122,7 @@ void    LLFloaterIMNearbyChatToastPanel::reshape        (S32 width, S32 height,
     msg_text->setRect(msg_text_rect);
 }
 
-BOOL LLFloaterIMNearbyChatToastPanel::postBuild()
+bool LLFloaterIMNearbyChatToastPanel::postBuild()
 {
     return LLPanel::postBuild();
 }
@@ -171,7 +171,7 @@ void LLFloaterIMNearbyChatToastPanel::addMessage(LLSD& notification)
         {
             style_params.font.style = "ITALIC";
         }
-        mMsgText->appendText(messageText, TRUE, style_params);
+        mMsgText->appendText(messageText, true, style_params);
     }
 
     snapToMessageHeight();
@@ -234,7 +234,7 @@ void LLFloaterIMNearbyChatToastPanel::init(LLSD& notification)
             style_params_name.link_href = notification["sender_slurl"].asString();
             style_params_name.is_link = true;
 
-            mMsgText->appendText(str_sender, FALSE, style_params_name);
+            mMsgText->appendText(str_sender, false, style_params_name);
 
         }
         else
@@ -293,7 +293,7 @@ void LLFloaterIMNearbyChatToastPanel::init(LLSD& notification)
         {
             style_params.font.style = "ITALIC";
         }
-        mMsgText->appendText(messageText, FALSE, style_params);
+        mMsgText->appendText(messageText, false, style_params);
     }
 
 
@@ -326,12 +326,12 @@ void LLFloaterIMNearbyChatToastPanel::onMouseEnter              (S32 x, S32 y, M
         return;
 }
 
-BOOL    LLFloaterIMNearbyChatToastPanel::handleMouseDown    (S32 x, S32 y, MASK mask)
+bool    LLFloaterIMNearbyChatToastPanel::handleMouseDown    (S32 x, S32 y, MASK mask)
 {
     return LLPanel::handleMouseDown(x,y,mask);
 }
 
-BOOL    LLFloaterIMNearbyChatToastPanel::handleMouseUp  (S32 x, S32 y, MASK mask)
+bool    LLFloaterIMNearbyChatToastPanel::handleMouseUp  (S32 x, S32 y, MASK mask)
 {
     /*
     fix for request  EXT-4780
@@ -344,18 +344,17 @@ BOOL    LLFloaterIMNearbyChatToastPanel::handleMouseUp  (S32 x, S32 y, MASK mask
     S32 local_y = y - mMsgText->getRect().mBottom;
 
     //if text_box process mouse up (ussually this is click on url) - we didn't show nearby_chat.
-    if (mMsgText->pointInView(local_x, local_y) )
+    if (mMsgText->pointInView(local_x, local_y))
     {
-        if (mMsgText->handleMouseUp(local_x,local_y,mask) == TRUE)
-            return TRUE;
-        else
-        {
-            LLFloaterReg::getTypedInstance<LLFloaterIMNearbyChat>("nearby_chat")->showHistory();
-            return FALSE;
-        }
+        if (mMsgText->handleMouseUp(local_x, local_y, mask))
+            return true;
+
+        LLFloaterReg::getTypedInstance<LLFloaterIMNearbyChat>("nearby_chat")->showHistory();
+        return false;
     }
+
     LLFloaterReg::getTypedInstance<LLFloaterIMNearbyChat>("nearby_chat")->showHistory();
-    return LLPanel::handleMouseUp(x,y,mask);
+    return LLPanel::handleMouseUp(x, y, mask);
 }
 
 void    LLFloaterIMNearbyChatToastPanel::setHeaderVisibility(EShowItemHeader e)
@@ -374,7 +373,7 @@ bool    LLFloaterIMNearbyChatToastPanel::canAddText ()
     return msg_text->getLineCount()<10;
 }
 
-BOOL    LLFloaterIMNearbyChatToastPanel::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool    LLFloaterIMNearbyChatToastPanel::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     LLUICtrl* avatar_icon = getChild<LLUICtrl>("avatar_icon", false);
 
@@ -383,7 +382,7 @@ BOOL    LLFloaterIMNearbyChatToastPanel::handleRightMouseDown(S32 x, S32 y, MASK
 
     //eat message for avatar icon if msg was from object
     if(avatar_icon->pointInView(local_x, local_y) && mSourceType != CHAT_SOURCE_AGENT)
-        return TRUE;
+        return true;
     return LLPanel::handleRightMouseDown(x,y,mask);
 }
 void LLFloaterIMNearbyChatToastPanel::draw()
diff --git a/indra/newview/llchatitemscontainerctrl.h b/indra/newview/llchatitemscontainerctrl.h
index d041615060..4ae73a0c43 100644
--- a/indra/newview/llchatitemscontainerctrl.h
+++ b/indra/newview/llchatitemscontainerctrl.h
@@ -66,15 +66,15 @@ public:
 
     void    onMouseLeave    (S32 x, S32 y, MASK mask);
     void    onMouseEnter    (S32 x, S32 y, MASK mask);
-    BOOL    handleMouseDown (S32 x, S32 y, MASK mask);
-    BOOL    handleMouseUp   (S32 x, S32 y, MASK mask);
+    bool    handleMouseDown (S32 x, S32 y, MASK mask);
+    bool    handleMouseUp   (S32 x, S32 y, MASK mask);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
-    void    reshape     (S32 width, S32 height, BOOL called_from_parent = TRUE);
+    void    reshape     (S32 width, S32 height, bool called_from_parent = true);
 
     void    setHeaderVisibility(EShowItemHeader e);
-    BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask);
+    bool    handleRightMouseDown(S32 x, S32 y, MASK mask);
 
     virtual void init(LLSD& data);
     virtual void addMessage(LLSD& data);
diff --git a/indra/newview/llchiclet.cpp b/indra/newview/llchiclet.cpp
index 3d328e66c8..4c0f160f6f 100644
--- a/indra/newview/llchiclet.cpp
+++ b/indra/newview/llchiclet.cpp
@@ -56,7 +56,7 @@ LLSysWellChiclet::Params::Params()
     , max_displayed_count("max_displayed_count", 99)
 {
     button.name = "button";
-    button.tab_stop = FALSE;
+    button.tab_stop = false;
     button.label = LLStringUtil::null;
 }
 
@@ -114,7 +114,7 @@ boost::signals2::connection LLSysWellChiclet::setClickCallback(
     return mButton->setClickedCallback(cb);
 }
 
-void LLSysWellChiclet::setToggleState(BOOL toggled) {
+void LLSysWellChiclet::setToggleState(bool toggled) {
     mButton->setToggleState(toggled);
 }
 
@@ -148,7 +148,7 @@ void LLSysWellChiclet::updateWidget(bool is_window_empty)
     }
 }
 // virtual
-BOOL LLSysWellChiclet::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLSysWellChiclet::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     LLContextMenu* menu_avatar = mContextMenuHandle.get();
     if(!menu_avatar)
@@ -161,7 +161,7 @@ BOOL LLSysWellChiclet::handleRightMouseDown(S32 x, S32 y, MASK mask)
         menu_avatar->show(x, y);
         LLMenuGL::showPopup(this, menu_avatar, x, y);
     }
-    return TRUE;
+    return true;
 }
 
 /************************************************************************/
@@ -284,11 +284,11 @@ boost::signals2::connection LLChiclet::setLeftButtonClickCallback(
     return setCommitCallback(cb);
 }
 
-BOOL LLChiclet::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLChiclet::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     onCommit();
     childrenHandleMouseDown(x,y,mask);
-    return TRUE;
+    return true;
 }
 
 boost::signals2::connection LLChiclet::setChicletSizeChangedCallback(
@@ -339,12 +339,12 @@ LLIMChiclet::~LLIMChiclet()
 }
 
 /* virtual*/
-BOOL LLIMChiclet::postBuild()
+bool LLIMChiclet::postBuild()
 {
     mChicletButton = getChild<LLButton>("chiclet_button");
     mChicletButton->setCommitCallback(boost::bind(&LLIMChiclet::onMouseDown, this));
     mChicletButton->setDoubleClickCallback(boost::bind(&LLIMChiclet::onMouseDown, this));
-    return TRUE;
+    return true;
 }
 
 void LLIMChiclet::enableCounterControl(bool enable)
@@ -387,7 +387,7 @@ void LLIMChiclet::setToggleState(bool toggle)
     mChicletButton->setToggleState(toggle);
 }
 
-BOOL LLIMChiclet::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLIMChiclet::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     auto menu = static_cast<LLMenuGL*>(mPopupMenuHandle.get());
     if(!menu)
@@ -403,7 +403,7 @@ BOOL LLIMChiclet::handleRightMouseDown(S32 x, S32 y, MASK mask)
         LLMenuGL::showPopup(this, menu, x, y);
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLIMChiclet::hidePopupMenu()
@@ -411,7 +411,7 @@ void LLIMChiclet::hidePopupMenu()
     auto menu = mPopupMenuHandle.get();
     if (menu)
     {
-        menu->setVisible(FALSE);
+        menu->setVisible(false);
     }
 }
 
@@ -503,7 +503,7 @@ void LLChicletPanel::objectChicletCallback(const LLSD& data)
     }
 }
 
-BOOL LLChicletPanel::postBuild()
+bool LLChicletPanel::postBuild()
 {
     LLPanel::postBuild();
     LLIMModel::instance().addNewMsgCallback(boost::bind(&LLChicletPanel::onMessageCountChanged, this, _1));
@@ -525,7 +525,7 @@ BOOL LLChicletPanel::postBuild()
     mRightScrollButton->setHeldDownCallback(boost::bind(&LLChicletPanel::onRightScrollHeldDown,this));
     mRightScrollButton->setEnabled(false);
 
-    return TRUE;
+    return true;
 }
 
 void LLChicletPanel::onCurrentVoiceChannelChanged(const LLUUID& session_id)
@@ -711,7 +711,7 @@ void LLChicletPanel::scrollToChiclet(const LLChiclet* chiclet)
     }
 }
 
-void LLChicletPanel::reshape(S32 width, S32 height, BOOL called_from_parent )
+void LLChicletPanel::reshape(S32 width, S32 height, bool called_from_parent )
 {
     LLPanel::reshape(width,height,called_from_parent);
 
@@ -999,7 +999,7 @@ boost::signals2::connection LLChicletPanel::setChicletClickedCallback(
     return setCommitCallback(cb);
 }
 
-BOOL LLChicletPanel::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLChicletPanel::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if(clicks > 0)
     {
@@ -1009,7 +1009,7 @@ BOOL LLChicletPanel::handleScrollWheel(S32 x, S32 y, S32 clicks)
     {
         scrollLeft();
     }
-    return TRUE;
+    return true;
 }
 
 bool LLChicletPanel::isAnyIMFloaterDoked()
diff --git a/indra/newview/llchiclet.h b/indra/newview/llchiclet.h
index 39b5e01d80..ce8968253b 100644
--- a/indra/newview/llchiclet.h
+++ b/indra/newview/llchiclet.h
@@ -104,8 +104,8 @@ public:
     {
         Params()
         {
-            changeDefault(draw_tooltip, FALSE);
-            changeDefault(mouse_opaque, FALSE);
+            changeDefault(draw_tooltip, false);
+            changeDefault(mouse_opaque, false);
             changeDefault(default_icon_name, "Generic_Person");
         };
     };
@@ -214,7 +214,7 @@ protected:
     /**
      * Notifies subscribers about click on chiclet.
      */
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
 
     /**
      * Notifies subscribers about chiclet size changed event.
@@ -257,7 +257,7 @@ public:
     /**
      * It is used for default setting up of chicklet:click handler, etc.
      */
-    BOOL postBuild();
+    bool postBuild();
 
     /**
      * Sets IM session name. This name will be displayed in chiclet tooltip.
@@ -303,7 +303,7 @@ public:
     /**
      * Displays popup menu.
      */
-    virtual BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleRightMouseDown(S32 x, S32 y, MASK mask);
 
     void hidePopupMenu();
 
@@ -485,7 +485,7 @@ public:
 
     /*virtual*/ ~LLSysWellChiclet();
 
-    void setToggleState(BOOL toggled);
+    void setToggleState(bool toggled);
 
     void setNewMessagesState(bool new_messages);
     //this method should change a widget according to state of the SysWellWindow
@@ -507,7 +507,7 @@ protected:
     /**
      * Displays menu.
      */
-    virtual BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleRightMouseDown(S32 x, S32 y, MASK mask);
 
     virtual void createMenu() = 0;
 
@@ -628,7 +628,7 @@ public:
     /**
      * Returns number of hosted chiclets.
      */
-    S32 getChicletCount() {return mChicletList.size();};
+    S32 getChicletCount() { return static_cast<S32>(mChicletList.size()); }
 
     /**
      * Returns index of chiclet in list.
@@ -663,7 +663,7 @@ public:
     boost::signals2::connection setChicletClickedCallback(
         const commit_callback_t& cb);
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     /**
      * Handler for the Voice Client's signal. Finds a corresponding chiclet and toggles its SpeakerControl
@@ -673,7 +673,7 @@ public:
     /**
      * Reshapes controls and rearranges chiclets if needed.
      */
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE );
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true );
 
     /*virtual*/ void draw();
 
@@ -778,7 +778,7 @@ protected:
     /**
      * Callback for mouse wheel scrolled, calls scrollRight() or scrollLeft()
      */
-    BOOL handleScrollWheel(S32 x, S32 y, S32 clicks);
+    bool handleScrollWheel(S32 x, S32 y, S32 clicks);
 
     /**
      * Notifies subscribers about click on chiclet.
@@ -854,7 +854,7 @@ T* LLChicletPanel::createChiclet(const LLUUID& session_id, S32 index)
 template<class T>
 T* LLChicletPanel::createChiclet(const LLUUID& session_id)
 {
-    return createChiclet<T>(session_id, mChicletList.size());
+    return createChiclet<T>(session_id, static_cast<S32>(mChicletList.size()));
 }
 
 template<class T>
diff --git a/indra/newview/llchicletbar.cpp b/indra/newview/llchicletbar.cpp
index 442176fdf5..bef96d0f11 100644
--- a/indra/newview/llchicletbar.cpp
+++ b/indra/newview/llchicletbar.cpp
@@ -45,7 +45,7 @@ LLChicletBar::LLChicletBar()
     buildFromFile("panel_chiclet_bar.xml");
 }
 
-BOOL LLChicletBar::postBuild()
+bool LLChicletBar::postBuild()
 {
     mToolbarStack = getChild<LLLayoutStack>("toolbar_stack");
     mChicletPanel = getChild<LLChicletPanel>("chiclet_list");
@@ -55,7 +55,7 @@ BOOL LLChicletBar::postBuild()
     LLPanelTopInfoBar::instance().setResizeCallback(boost::bind(&LLChicletBar::fitWithTopInfoBar, this));
     LLPanelTopInfoBar::instance().setVisibleCallback(boost::bind(&LLChicletBar::fitWithTopInfoBar, this));
 
-    return TRUE;
+    return true;
 }
 
 void LLChicletBar::showWellButton(const std::string& well_name, bool visible)
@@ -78,7 +78,7 @@ void LLChicletBar::log(LLView* panel, const std::string& descr)
         << LL_ENDL;
 }
 
-void LLChicletBar::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLChicletBar::reshape(S32 width, S32 height, bool called_from_parent)
 {
     static S32 debug_calling_number = 0;
     LL_DEBUGS() << "**************************************** " << ++debug_calling_number << LL_ENDL;
diff --git a/indra/newview/llchicletbar.h b/indra/newview/llchicletbar.h
index 748245cad6..53abebc7ab 100644
--- a/indra/newview/llchicletbar.h
+++ b/indra/newview/llchicletbar.h
@@ -43,11 +43,11 @@ class LLChicletBar
 
 public:
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     LLChicletPanel* getChicletPanel() { return mChicletPanel; }
 
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent) override;
+    void reshape(S32 width, S32 height, bool called_from_parent) override;
 
 
     /**
diff --git a/indra/newview/llcofwearables.cpp b/indra/newview/llcofwearables.cpp
index c43864d85f..47803edc73 100644
--- a/indra/newview/llcofwearables.cpp
+++ b/indra/newview/llcofwearables.cpp
@@ -69,7 +69,7 @@ protected:
         // Hide the "Create new <WEARABLE_TYPE>" if it's irrelevant.
         if (w_type == LLWearableType::WT_NONE)
         {
-            menu_item->setVisible(FALSE);
+            menu_item->setVisible(false);
             return;
         }
 
@@ -307,7 +307,7 @@ LLCOFWearables::~LLCOFWearables()
 }
 
 // virtual
-BOOL LLCOFWearables::postBuild()
+bool LLCOFWearables::postBuild()
 {
     mAttachments = getChild<LLFlatListView>("list_attachments");
     mClothing = getChild<LLFlatListView>("list_clothing");
@@ -618,13 +618,13 @@ void LLCOFWearables::populateClothingList(LLAppearanceMgr::wearables_by_type_t&
 
     for (U32 type = LLWearableType::WT_SHIRT; type < LLWearableType::WT_COUNT; ++type)
     {
-        U32 size = clothing_by_type[type].size();
+        auto size = clothing_by_type[type].size();
         if (!size) continue;
 
         LLAppearanceMgr::sortItemsByActualDescription(clothing_by_type[type]);
 
         //clothing items are displayed in reverse order, from furthest ones to closest ones (relatively to the body)
-        for (U32 i = size; i != 0; --i)
+        for (size_t i = size; i != 0; --i)
         {
             LLViewerInventoryItem* item = clothing_by_type[type][i-1];
 
@@ -647,8 +647,8 @@ void LLCOFWearables::addClothingTypesDummies(const LLAppearanceMgr::wearables_by
 
     for (U32 type = LLWearableType::WT_SHIRT; type < LLWearableType::WT_COUNT; type++)
     {
-        U32 size = clothing_by_type[type].size();
-        if (size) continue;
+        if (clothing_by_type[type].empty())
+            continue;
 
         LLWearableType::EType w_type = static_cast<LLWearableType::EType>(type);
         LLPanelInventoryListItemBase* item_panel = LLPanelDummyClothingListItem::create(w_type);
diff --git a/indra/newview/llcofwearables.h b/indra/newview/llcofwearables.h
index 7a5ddbb16d..6f0e97a98b 100644
--- a/indra/newview/llcofwearables.h
+++ b/indra/newview/llcofwearables.h
@@ -68,7 +68,7 @@ public:
     LLCOFWearables();
     virtual ~LLCOFWearables();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     LLUUID getSelectedUUID();
     bool getSelectedUUIDs(uuid_vec_t& selected_ids);
diff --git a/indra/newview/llcolorswatch.cpp b/indra/newview/llcolorswatch.cpp
index 43e3d0c642..97d2345778 100644
--- a/indra/newview/llcolorswatch.cpp
+++ b/indra/newview/llcolorswatch.cpp
@@ -59,7 +59,7 @@ LLColorSwatchCtrl::Params::Params()
 
 LLColorSwatchCtrl::LLColorSwatchCtrl(const Params& p)
 :   LLUICtrl(p),
-    mValid( TRUE ),
+    mValid( true ),
     mColor(p.color()),
     mCanApplyImmediately(p.can_apply_immediately),
     mAlphaGradientImage(p.alpha_background_image),
@@ -108,22 +108,22 @@ LLColorSwatchCtrl::~LLColorSwatchCtrl ()
     }
 }
 
-BOOL LLColorSwatchCtrl::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLColorSwatchCtrl::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     return handleMouseDown(x, y, mask);
 }
 
-BOOL LLColorSwatchCtrl::handleHover(S32 x, S32 y, MASK mask)
+bool LLColorSwatchCtrl::handleHover(S32 x, S32 y, MASK mask)
 {
     getWindow()->setCursor(UI_CURSOR_HAND);
-    return TRUE;
+    return true;
 }
 
-BOOL LLColorSwatchCtrl::handleUnicodeCharHere(llwchar uni_char)
+bool LLColorSwatchCtrl::handleUnicodeCharHere(llwchar uni_char)
 {
     if( ' ' == uni_char )
     {
-        showPicker(TRUE);
+        showPicker(true);
     }
     return LLUICtrl::handleUnicodeCharHere(uni_char);
 }
@@ -139,7 +139,7 @@ void LLColorSwatchCtrl::setOriginal(const LLColor4& color)
     }
 }
 
-void LLColorSwatchCtrl::set(const LLColor4& color, BOOL update_picker, BOOL from_event)
+void LLColorSwatchCtrl::set(const LLColor4& color, bool update_picker, bool from_event)
 {
     mColor = color;
     LLFloaterColorPicker* pickerp = (LLFloaterColorPicker*)mPickerHandle.get();
@@ -158,17 +158,17 @@ void LLColorSwatchCtrl::setLabel(const std::string& label)
     mCaption->setText(label);
 }
 
-BOOL LLColorSwatchCtrl::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLColorSwatchCtrl::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // Route future Mouse messages here preemptively.  (Release on mouse up.)
     // No handler is needed for capture lost since this object has no state that depends on it.
     gFocusMgr.setMouseCapture( this );
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLColorSwatchCtrl::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLColorSwatchCtrl::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     // We only handle the click if the click both started and ended within us
     if( hasMouseCapture() )
@@ -184,13 +184,13 @@ BOOL LLColorSwatchCtrl::handleMouseUp(S32 x, S32 y, MASK mask)
 
             // Focus the widget now in order to return the focus
             // after the color picker is closed.
-            setFocus(TRUE);
+            setFocus(true);
 
-            showPicker(FALSE);
+            showPicker(false);
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 // assumes GL state is set for 2D
@@ -202,7 +202,7 @@ void LLColorSwatchCtrl::draw()
     mBorder->setKeyboardFocusHighlight(hasFocus());
     // Draw border
     LLRect border( 0, getRect().getHeight(), getRect().getWidth(), mLabelHeight );
-    gl_rect_2d( border, mBorderColor.get(), FALSE );
+    gl_rect_2d( border, mBorderColor.get(), false );
 
     LLRect interior = border;
     interior.stretch( -1 );
@@ -217,7 +217,7 @@ void LLColorSwatchCtrl::draw()
         }
 
         // Draw the color swatch
-        gl_rect_2d(interior, mColor % alpha, TRUE);
+        gl_rect_2d(interior, mColor % alpha, true);
 
         if (!mColor.isOpaque())
         {
@@ -244,7 +244,7 @@ void LLColorSwatchCtrl::draw()
         else
         {
             // Draw grey and an X
-            gl_rect_2d(interior, LLColor4::grey % alpha, TRUE);
+            gl_rect_2d(interior, LLColor4::grey % alpha, true);
 
             gl_draw_x(interior, LLColor4::black % alpha);
         }
@@ -253,7 +253,7 @@ void LLColorSwatchCtrl::draw()
     LLUICtrl::draw();
 }
 
-void LLColorSwatchCtrl::setEnabled( BOOL enabled )
+void LLColorSwatchCtrl::setEnabled( bool enabled )
 {
     mCaption->setEnabled( enabled );
     LLView::setEnabled( enabled );
@@ -272,7 +272,7 @@ void LLColorSwatchCtrl::setEnabled( BOOL enabled )
 
 void LLColorSwatchCtrl::setValue(const LLSD& value)
 {
-    set(LLColor4(value), TRUE, TRUE);
+    set(LLColor4(value), true, true);
 }
 
 //////////////////////////////////////////////////////////////////////////////
@@ -316,7 +316,7 @@ void LLColorSwatchCtrl::onColorChanged ( void* data, EColorPickOp pick_op )
             {
                 // both select and cancel close LLFloaterColorPicker
                 // but COLOR_CHANGE does not
-                subject->setFocus(TRUE);
+                subject->setFocus(true);
             }
         }
     }
@@ -337,7 +337,7 @@ void LLColorSwatchCtrl::closeFloaterColorPicker()
     mPickerHandle.markDead();
 }
 
-void LLColorSwatchCtrl::setValid(BOOL valid )
+void LLColorSwatchCtrl::setValid(bool valid )
 {
     mValid = valid;
 
@@ -348,7 +348,7 @@ void LLColorSwatchCtrl::setValid(BOOL valid )
     }
 }
 
-void LLColorSwatchCtrl::showPicker(BOOL take_focus)
+void LLColorSwatchCtrl::showPicker(bool take_focus)
 {
     LLFloaterColorPicker* pickerp = (LLFloaterColorPicker*)mPickerHandle.get();
     if (!pickerp)
@@ -370,7 +370,7 @@ void LLColorSwatchCtrl::showPicker(BOOL take_focus)
 
     if (take_focus)
     {
-        pickerp->setFocus(TRUE);
+        pickerp->setFocus(true);
     }
 }
 
diff --git a/indra/newview/llcolorswatch.h b/indra/newview/llcolorswatch.h
index 81cf04e7b9..2ef715d648 100644
--- a/indra/newview/llcolorswatch.h
+++ b/indra/newview/llcolorswatch.h
@@ -76,26 +76,26 @@ public:
     /*virtual*/ LLSD getValue() const { return mColor.getValue(); }
     const LLColor4& get()                           { return mColor; }
 
-    void            set(const LLColor4& color, BOOL update_picker = FALSE, BOOL from_event = FALSE);
+    void            set(const LLColor4& color, bool update_picker = false, bool from_event = false);
     void            setOriginal(const LLColor4& color);
-    void            setValid(BOOL valid);
+    void            setValid(bool valid);
     void            setLabel(const std::string& label);
     void            setLabelWidth(S32 label_width) {mLabelWidth =label_width;}
-    void            setCanApplyImmediately(BOOL apply) { mCanApplyImmediately = apply; }
+    void            setCanApplyImmediately(bool apply) { mCanApplyImmediately = apply; }
     void            setOnCancelCallback(commit_callback_t cb) { mOnCancelCallback = cb; }
     void            setOnSelectCallback(commit_callback_t cb) { mOnSelectCallback = cb; }
     void            setPreviewCallback(commit_callback_t cb) { mPreviewCallback = cb; }
     void            setFallbackImage(LLPointer<LLUIImage> image) { mFallbackImage = image; }
 
-    void            showPicker(BOOL take_focus);
+    void            showPicker(bool take_focus);
 
-    /*virtual*/ BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleDoubleClick(S32 x,S32 y,MASK mask);
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleUnicodeCharHere(llwchar uni_char);
+    /*virtual*/ bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleDoubleClick(S32 x,S32 y,MASK mask);
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleUnicodeCharHere(llwchar uni_char);
     /*virtual*/ void    draw();
-    /*virtual*/ void    setEnabled( BOOL enabled );
+    /*virtual*/ void    setEnabled( bool enabled );
 
     static void     onColorChanged ( void* data, EColorPickOp pick_op = COLOR_CHANGE );
     void            closeFloaterColorPicker();
diff --git a/indra/newview/llcommandlineparser.cpp b/indra/newview/llcommandlineparser.cpp
index 2ada35aa60..f301af9511 100644
--- a/indra/newview/llcommandlineparser.cpp
+++ b/indra/newview/llcommandlineparser.cpp
@@ -378,8 +378,8 @@ bool LLCommandLineParser::parseCommandLineString(const std::string& str)
     if (!str.empty())
     {
         bool add_last_c = true;
-        S32 last_c_pos = str.size() - 1; //don't get out of bounds on pos+1, last char will be processed separately
-        for (S32 pos = 0; pos < last_c_pos; ++pos)
+        auto last_c_pos = str.size() - 1; //don't get out of bounds on pos+1, last char will be processed separately
+        for (size_t pos = 0; pos < last_c_pos; ++pos)
         {
             cmd_line_string.append(&str[pos], 1);
             if (str[pos] == '\\')
@@ -571,8 +571,8 @@ void setControlValueCB(const LLCommandLineParser::token_vector_t& value,
                 std::string token(onevalue(option, value));
 
                 // There's a token. check the string for true/false/1/0 etc.
-                BOOL result = false;
-                BOOL gotSet = LLStringUtil::convertToBOOL(token, result);
+                bool result = false;
+                bool gotSet = LLStringUtil::convertToBOOL(token, result);
                 if (gotSet)
                 {
                     ctrl->setValue(LLSD(result), false);
diff --git a/indra/newview/llcommunicationchannel.cpp b/indra/newview/llcommunicationchannel.cpp
index 074d60d879..810b282722 100644
--- a/indra/newview/llcommunicationchannel.cpp
+++ b/indra/newview/llcommunicationchannel.cpp
@@ -54,7 +54,7 @@ bool LLCommunicationChannel::filterByDoNotDisturbStatus(LLNotificationPtr)
 
 S32 LLCommunicationChannel::getHistorySize() const
 {
-    return mHistory.size();
+    return static_cast<S32>(mHistory.size());
 }
 
 LLCommunicationChannel::history_list_t::const_iterator LLCommunicationChannel::beginHistory() const
diff --git a/indra/newview/llcompilequeue.cpp b/indra/newview/llcompilequeue.cpp
index 0006a48de5..552ea75559 100644
--- a/indra/newview/llcompilequeue.cpp
+++ b/indra/newview/llcompilequeue.cpp
@@ -195,12 +195,12 @@ LLFloaterScriptQueue::~LLFloaterScriptQueue()
 {
 }
 
-BOOL LLFloaterScriptQueue::postBuild()
+bool LLFloaterScriptQueue::postBuild()
 {
     childSetAction("close",onCloseBtn,this);
-    getChildView("close")->setEnabled(FALSE);
+    getChildView("close")->setEnabled(false);
     setVisible(true);
-    return TRUE;
+    return true;
 }
 
 // static
@@ -216,7 +216,7 @@ void LLFloaterScriptQueue::addObject(const LLUUID& id, std::string name)
     mObjectList.push_back(obj);
 }
 
-BOOL LLFloaterScriptQueue::start()
+bool LLFloaterScriptQueue::start()
 {
     std::string buffer;
 
@@ -243,7 +243,7 @@ void LLFloaterScriptQueue::addStringMessage(const std::string &message)
 }
 
 
-BOOL LLFloaterScriptQueue::isDone() const
+bool LLFloaterScriptQueue::isDone() const
 {
     return (mCurrentObjectID.isNull() && (mObjectList.size() == 0));
 }
@@ -271,7 +271,7 @@ void LLFloaterCompileQueue::experienceIdsReceived( const LLSD& content )
     }
 }
 
-BOOL LLFloaterCompileQueue::hasExperience( const LLUUID& id ) const
+bool LLFloaterCompileQueue::hasExperience( const LLUUID& id ) const
 {
     return mExperienceIds.find(id) != mExperienceIds.end();
 }
@@ -536,7 +536,7 @@ bool LLFloaterCompileQueue::startQueue()
 
             LLCoreHttpUtil::HttpCoroutineAdapter::callbackHttpGet(lookup_url,
                 success, failure);
-            return TRUE;
+            return true;
         }
     }
 
@@ -637,7 +637,7 @@ bool LLFloaterRunQueue::runObjectScripts(LLHandle<LLFloaterScriptQueue> hfloater
     msg->nextBlockFast(_PREHASH_Script);
     msg->addUUIDFast(_PREHASH_ObjectID, object->getID());
     msg->addUUIDFast(_PREHASH_ItemID, inventory->getUUID());
-    msg->addBOOLFast(_PREHASH_Running, TRUE);
+    msg->addBOOLFast(_PREHASH_Running, true);
     msg->sendReliable(object->getRegion()->getHost());
 
     return true;
@@ -694,7 +694,7 @@ bool LLFloaterNotRunQueue::stopObjectScripts(LLHandle<LLFloaterScriptQueue> hflo
     msg->nextBlockFast(_PREHASH_Script);
     msg->addUUIDFast(_PREHASH_ObjectID, object->getID());
     msg->addUUIDFast(_PREHASH_ItemID, inventory->getUUID());
-    msg->addBOOLFast(_PREHASH_Running, FALSE);
+    msg->addBOOLFast(_PREHASH_Running, false);
     msg->sendReliable(object->getRegion()->getHost());
 
     return true;
@@ -815,7 +815,7 @@ void LLFloaterScriptQueue::objectScriptProcessingQueueCoro(std::string action, L
         }
 
         floater->addStringMessage("Done");
-        floater->getChildView("close")->setEnabled(TRUE);
+        floater->getChildView("close")->setEnabled(true);
     }
     catch (LLCheckedHandleBase::Stale &)
     {
diff --git a/indra/newview/llcompilequeue.h b/indra/newview/llcompilequeue.h
index ba5e27d75a..951d4800e8 100644
--- a/indra/newview/llcompilequeue.h
+++ b/indra/newview/llcompilequeue.h
@@ -53,15 +53,15 @@ public:
     LLFloaterScriptQueue(const LLSD& key);
     virtual ~LLFloaterScriptQueue();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     void setMono(bool mono) { mMono = mono; }
 
     // addObject() accepts an object id.
     void addObject(const LLUUID& id, std::string name);
 
-    // start() returns TRUE if the queue has started, otherwise FALSE.
-    BOOL start();
+    // start() returns true if the queue has started, otherwise false.
+    bool start();
 
     void addProcessingMessage(const std::string &message, const LLSD &args);
     void addStringMessage(const std::string &message);
@@ -72,7 +72,7 @@ protected:
     static void onCloseBtn(void* user_data);
 
     // returns true if this is done
-    BOOL isDone() const;
+    bool isDone() const;
 
     virtual bool startQueue() = 0;
 
@@ -123,7 +123,7 @@ class LLFloaterCompileQueue : public LLFloaterScriptQueue
 public:
 
     void experienceIdsReceived( const LLSD& content );
-    BOOL hasExperience(const LLUUID& id)const;
+    bool hasExperience(const LLUUID& id)const;
 
 protected:
     LLFloaterCompileQueue(const LLSD& key);
diff --git a/indra/newview/llcontrolavatar.cpp b/indra/newview/llcontrolavatar.cpp
index b7317272a1..716333b217 100644
--- a/indra/newview/llcontrolavatar.cpp
+++ b/indra/newview/llcontrolavatar.cpp
@@ -51,7 +51,7 @@ LLControlAvatar::LLControlAvatar(const LLUUID& id, const LLPCode pcode, LLViewer
     mScaleConstraintFixup(1.0),
     mRegionChanged(false)
 {
-    mIsDummy = TRUE;
+    mIsDummy = true;
     mIsControlAvatar = true;
     mEnableDefaultMotions = false;
 }
@@ -292,7 +292,7 @@ void LLControlAvatar::updateVolumeGeom()
         return;
     if (mRootVolp->mDrawable->isActive())
     {
-        mRootVolp->mDrawable->makeStatic(FALSE);
+        mRootVolp->mDrawable->makeStatic(false);
     }
     mRootVolp->mDrawable->makeActive();
     gPipeline.markMoved(mRootVolp->mDrawable);
@@ -424,11 +424,11 @@ void LLControlAvatar::updateDebugText()
         S32 total_linkset_count = 0;
         if (mRootVolp)
         {
-            total_linkset_count = 1 + mRootVolp->getChildren().size();
+            total_linkset_count = 1 + static_cast<S32>(mRootVolp->getChildren().size());
         }
         std::vector<LLVOVolume*> volumes;
         getAnimatedVolumes(volumes);
-        S32 animated_volume_count = volumes.size();
+        S32 animated_volume_count = static_cast<S32>(volumes.size());
         std::string active_string;
         std::string type_string;
         std::string lod_string;
@@ -616,9 +616,9 @@ void LLControlAvatar::updateAnimations()
 // virtual
 LLViewerObject* LLControlAvatar::lineSegmentIntersectRiggedAttachments(const LLVector4a& start, const LLVector4a& end,
                                       S32 face,
-                                      BOOL pick_transparent,
-                                      BOOL pick_rigged,
-                                      BOOL pick_unselectable,
+                                      bool pick_transparent,
+                                      bool pick_rigged,
+                                      bool pick_unselectable,
                                       S32* face_hit,
                                       LLVector4a* intersection,
                                       LLVector2* tex_coord,
@@ -695,7 +695,7 @@ bool LLControlAvatar::shouldRenderRigged() const
 }
 
 // virtual
-BOOL LLControlAvatar::isImpostor()
+bool LLControlAvatar::isImpostor()
 {
     // Attached animated objects should match state of their attached av.
     LLVOAvatar *attached_av = getAttachedAvatar();
diff --git a/indra/newview/llcontrolavatar.h b/indra/newview/llcontrolavatar.h
index ca98659ecd..0d94fe08ee 100644
--- a/indra/newview/llcontrolavatar.h
+++ b/indra/newview/llcontrolavatar.h
@@ -69,9 +69,9 @@ public:
     virtual LLViewerObject* lineSegmentIntersectRiggedAttachments(
         const LLVector4a& start, const LLVector4a& end,
         S32 face = -1,                    // which face to check, -1 = ALL_SIDES
-        BOOL pick_transparent = FALSE,
-        BOOL pick_rigged = FALSE,
-        BOOL pick_unselectable = TRUE,
+        bool pick_transparent = false,
+        bool pick_rigged = false,
+        bool pick_unselectable = true,
         S32* face_hit = NULL,             // which face was hit
         LLVector4a* intersection = NULL,   // return the intersection point
         LLVector2* tex_coord = NULL,      // return the texture coordinates of the intersection point
@@ -84,7 +84,8 @@ public:
 
     virtual bool shouldRenderRigged() const;
 
-    virtual BOOL isImpostor();
+    virtual bool isImpostor();
+    virtual bool isBuddy() const { return false; }
 
     bool mPlaying;
 
diff --git a/indra/newview/llconversationlog.cpp b/indra/newview/llconversationlog.cpp
index dd4ca845a0..ed563cbec9 100644
--- a/indra/newview/llconversationlog.cpp
+++ b/indra/newview/llconversationlog.cpp
@@ -215,7 +215,7 @@ void LLConversationLog::enableLogging(S32 log_mode)
     notifyObservers();
 }
 
-void LLConversationLog::logConversation(const LLUUID& session_id, BOOL has_offline_msg)
+void LLConversationLog::logConversation(const LLUUID& session_id, bool has_offline_msg)
 {
     const LLIMModel::LLIMSession* session = LLIMModel::instance().findIMSession(session_id);
     LLConversation* conversation = findConversation(session);
@@ -272,7 +272,7 @@ void LLConversationLog::updateConversationName(const LLIMModel::LLIMSession* ses
     }
 }
 
-void LLConversationLog::updateOfflineIMs(const LLIMModel::LLIMSession* session, BOOL new_messages)
+void LLConversationLog::updateOfflineIMs(const LLIMModel::LLIMSession* session, bool new_messages)
 {
     if (!session)
     {
@@ -354,7 +354,7 @@ void LLConversationLog::removeObserver(LLConversationLogObserver* observer)
     mObservers.erase(observer);
 }
 
-void LLConversationLog::sessionAdded(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id, BOOL has_offline_msg)
+void LLConversationLog::sessionAdded(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id, bool has_offline_msg)
 {
     logConversation(session_id, has_offline_msg);
 }
diff --git a/indra/newview/llconversationlog.h b/indra/newview/llconversationlog.h
index 5d6b57233f..b3a5be321e 100644
--- a/indra/newview/llconversationlog.h
+++ b/indra/newview/llconversationlog.h
@@ -125,7 +125,7 @@ public:
     void removeObserver(LLConversationLogObserver* observer);
 
     // LLIMSessionObserver triggers
-    virtual void sessionAdded(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id, BOOL has_offline_msg) override;
+    virtual void sessionAdded(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id, bool has_offline_msg) override;
     virtual void sessionActivated(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id) override {}; // Stub
     virtual void sessionRemoved(const LLUUID& session_id) override{}                                            // Stub
     virtual void sessionVoiceOrIMStarted(const LLUUID& session_id) override{};                              // Stub
@@ -179,7 +179,7 @@ private:
     /**
      * adds conversation to the conversation list and notifies observers
      */
-    void logConversation(const LLUUID& session_id, BOOL has_offline_msg);
+    void logConversation(const LLUUID& session_id, bool has_offline_msg);
 
     void notifyParticularConversationObservers(const LLUUID& session_id, U32 mask);
 
@@ -191,7 +191,7 @@ private:
     void createConversation(const LLIMModel::LLIMSession* session);
     void updateConversationTimestamp(LLConversation* conversation);
     void updateConversationName(const LLIMModel::LLIMSession* session, const std::string& name);
-    void updateOfflineIMs(const LLIMModel::LLIMSession* session, BOOL new_messages);
+    void updateOfflineIMs(const LLIMModel::LLIMSession* session, bool new_messages);
 
 
 
diff --git a/indra/newview/llconversationloglist.cpp b/indra/newview/llconversationloglist.cpp
index 838062795b..65863f0a5e 100644
--- a/indra/newview/llconversationloglist.cpp
+++ b/indra/newview/llconversationloglist.cpp
@@ -86,16 +86,15 @@ void LLConversationLogList::draw()
     LLFlatListViewEx::draw();
 }
 
-BOOL LLConversationLogList::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLConversationLogList::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLUICtrl::handleRightMouseDown(x, y, mask);
+    bool handled = LLUICtrl::handleRightMouseDown(x, y, mask);
 
     LLToggleableMenu* context_menu = mContextMenu.get();
+    if (context_menu && size())
     {
         context_menu->buildDrawLabels();
-        if (context_menu && size())
-            context_menu->updateParent(LLMenuGL::sMenuContainer);
-
+        context_menu->updateParent(LLMenuGL::sMenuContainer);
         LLMenuGL::showPopup(this, context_menu, x, y);
     }
 
@@ -370,7 +369,7 @@ bool LLConversationLogList::isActionEnabled(const LLSD& userdata)
 
     bool is_p2p   = LLIMModel::LLIMSession::P2P_SESSION == stype;
     bool is_group = LLIMModel::LLIMSession::GROUP_SESSION == stype;
-    bool is_group_member = is_group && gAgent.isInGroup(selected_id, TRUE);
+    bool is_group_member = is_group && gAgent.isInGroup(selected_id, true);
 
     if ("can_im" == command_name)
     {
diff --git a/indra/newview/llconversationloglist.h b/indra/newview/llconversationloglist.h
index 6435527b0d..6372f6c9a3 100644
--- a/indra/newview/llconversationloglist.h
+++ b/indra/newview/llconversationloglist.h
@@ -59,7 +59,7 @@ public:
 
     virtual void draw();
 
-    virtual BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleRightMouseDown(S32 x, S32 y, MASK mask);
 
     LLToggleableMenu*   getContextMenu() const { return mContextMenu.get(); }
 
diff --git a/indra/newview/llconversationloglistitem.cpp b/indra/newview/llconversationloglistitem.cpp
index 2c411ef0ef..20d5b0175b 100644
--- a/indra/newview/llconversationloglistitem.cpp
+++ b/indra/newview/llconversationloglistitem.cpp
@@ -62,7 +62,7 @@ LLConversationLogListItem::~LLConversationLogListItem()
     mIMFloaterShowedConnection.disconnect();
 }
 
-BOOL LLConversationLogListItem::postBuild()
+bool LLConversationLogListItem::postBuild()
 {
     initIcons();
 
@@ -77,7 +77,7 @@ BOOL LLConversationLogListItem::postBuild()
     getChild<LLButton>("delete_btn")->setClickedCallback(boost::bind(&LLConversationLogListItem::onRemoveBtnClicked, this));
     setDoubleClickCallback(boost::bind(&LLConversationLogListItem::onDoubleClick, this));
 
-    return TRUE;
+    return true;
 }
 
 void LLConversationLogListItem::initIcons()
@@ -88,14 +88,14 @@ void LLConversationLogListItem::initIcons()
         case LLIMModel::LLIMSession::ADHOC_SESSION:
         {
             LLAvatarIconCtrl* avatar_icon = getChild<LLAvatarIconCtrl>("avatar_icon");
-            avatar_icon->setVisible(TRUE);
+            avatar_icon->setVisible(true);
             avatar_icon->setValue(mConversation->getParticipantID());
             break;
         }
         case LLIMModel::LLIMSession::GROUP_SESSION:
         {
             LLGroupIconCtrl* group_icon = getChild<LLGroupIconCtrl>("group_icon");
-            group_icon->setVisible(TRUE);
+            group_icon->setVisible(true);
             group_icon->setValue(mConversation->getSessionID());
             break;
         }
@@ -105,7 +105,7 @@ void LLConversationLogListItem::initIcons()
 
     if (mConversation->hasOfflineMessages())
     {
-            getChild<LLIconCtrl>("unread_ims_icon")->setVisible(TRUE);
+            getChild<LLIconCtrl>("unread_ims_icon")->setVisible(true);
     }
 }
 
@@ -150,7 +150,7 @@ void LLConversationLogListItem::onIMFloaterShown(const LLUUID& session_id)
 {
     if (mConversation->getSessionID() == session_id)
     {
-        getChild<LLIconCtrl>("unread_ims_icon")->setVisible(FALSE);
+        getChild<LLIconCtrl>("unread_ims_icon")->setVisible(false);
     }
 }
 
diff --git a/indra/newview/llconversationloglistitem.h b/indra/newview/llconversationloglistitem.h
index 9c13efc6cb..31436c5c24 100644
--- a/indra/newview/llconversationloglistitem.h
+++ b/indra/newview/llconversationloglistitem.h
@@ -53,7 +53,7 @@ public:
 
     virtual void setValue(const LLSD& value);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     void onIMFloaterShown(const LLUUID& session_id);
     void onRemoveBtnClicked();
diff --git a/indra/newview/llconversationmodel.h b/indra/newview/llconversationmodel.h
index 3a3c26f955..c1e48c63a9 100644
--- a/indra/newview/llconversationmodel.h
+++ b/indra/newview/llconversationmodel.h
@@ -79,23 +79,23 @@ public:
     virtual LLPointer<LLUIImage> getOpenIcon() const { return getIcon(); }
     virtual LLFontGL::StyleFlags getLabelStyle() const { return LLFontGL::NORMAL; }
     virtual std::string getLabelSuffix() const { return LLStringUtil::null; }
-    virtual BOOL isItemRenameable() const { return TRUE; }
-    virtual BOOL renameItem(const std::string& new_name) { mName = new_name; mNeedsRefresh = true; return TRUE; }
-    virtual BOOL isItemMovable( void ) const { return FALSE; }
-    virtual BOOL isItemRemovable(bool check_worn = true) const { return FALSE; }
-    virtual BOOL isItemInTrash( void) const { return FALSE; }
-    virtual BOOL removeItem() { return FALSE; }
+    virtual bool isItemRenameable() const { return true; }
+    virtual bool renameItem(const std::string& new_name) { mName = new_name; mNeedsRefresh = true; return true; }
+    virtual bool isItemMovable( void ) const { return false; }
+    virtual bool isItemRemovable(bool check_worn = true) const { return false; }
+    virtual bool isItemInTrash( void) const { return false; }
+    virtual bool removeItem() { return false; }
     virtual void removeBatch(std::vector<LLFolderViewModelItem*>& batch) { }
     virtual void move( LLFolderViewModelItem* parent_listener ) { }
     virtual bool isItemCopyable(bool can_copy_as_link = true) const { return false; }
-    virtual BOOL copyToClipboard() const { return FALSE; }
-    virtual BOOL cutToClipboard() { return FALSE; }
-    virtual BOOL isClipboardPasteable() const { return FALSE; }
+    virtual bool copyToClipboard() const { return false; }
+    virtual bool cutToClipboard() { return false; }
+    virtual bool isClipboardPasteable() const { return false; }
     virtual void pasteFromClipboard() { }
     virtual void pasteLinkFromClipboard() { }
     virtual void buildContextMenu(LLMenuGL& menu, U32 flags) { }
-    virtual BOOL isUpToDate() const { return TRUE; }
-    virtual bool hasChildren() const { return FALSE; }
+    virtual bool isUpToDate() const { return true; }
+    virtual bool hasChildren() const { return false; }
     virtual void addChild(LLFolderViewModelItem* child);
 
     virtual bool potentiallyVisible() { return true; }
@@ -119,13 +119,13 @@ public:
     virtual const bool getDistanceToAgent(F64& distance) const { return false; }
 
     // This method will be called to determine if a drop can be
-    // performed, and will set drop to TRUE if a drop is
+    // performed, and will set drop to true if a drop is
     // requested.
-    // Returns TRUE if a drop is possible/happened, FALSE otherwise.
-    virtual BOOL dragOrDrop(MASK mask, BOOL drop,
+    // Returns true if a drop is possible/happened, false otherwise.
+    virtual bool dragOrDrop(MASK mask, bool drop,
                             EDragAndDropType cargo_type,
                             void* cargo_data,
-                            std::string& tooltip_msg) { return FALSE; }
+                            std::string& tooltip_msg) { return false; }
 
 //  bool hasSameValues(std::string name, const LLUUID& uuid) { return ((name == mName) && (uuid == mUUID)); }
     bool hasSameValue(const LLUUID& uuid) { return (uuid == mUUID); }
@@ -160,7 +160,7 @@ public:
     ~LLConversationItemSession();
 
     /*virtual*/ bool hasChildren() const;
-    LLPointer<LLUIImage> getIcon() const { return NULL; }
+    LLPointer<LLUIImage> getIcon() const { return nullptr; }
     void setSessionID(const LLUUID& session_id) { mUUID = session_id; mNeedsRefresh = true; }
     void addParticipant(LLConversationItemParticipant* participant);
     void updateName(LLConversationItemParticipant* participant);
diff --git a/indra/newview/llconversationview.cpp b/indra/newview/llconversationview.cpp
index 117dab8d58..eac1ee2a3c 100644
--- a/indra/newview/llconversationview.cpp
+++ b/indra/newview/llconversationview.cpp
@@ -206,7 +206,7 @@ bool LLConversationViewSession::isHighlightActive()
     return (mFlashStateOn ? (mFlashTimer->isFlashingInProgress() ? mFlashTimer->isCurrentlyHighlighted() : true) : mIsCurSelection);
 }
 
-BOOL LLConversationViewSession::postBuild()
+bool LLConversationViewSession::postBuild()
 {
     LLFolderViewItem::postBuild();
 
@@ -278,7 +278,7 @@ BOOL LLConversationViewSession::postBuild()
         refresh(); // requires vmi
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLConversationViewSession::draw()
@@ -286,7 +286,7 @@ void LLConversationViewSession::draw()
     getViewModelItem()->update();
 
     const LLFolderViewItem::Params& default_params = LLUICtrlFactory::getDefaultParams<LLFolderViewItem>();
-    const BOOL show_context = (getRoot() ? getRoot()->getShowSelectionContext() : FALSE);
+    const bool show_context = (getRoot() ? getRoot()->getShowSelectionContext() : false);
 
     // Indicate that flash can start (moot operation if already started, done or not flashing)
     startFlashing();
@@ -322,10 +322,10 @@ void LLConversationViewSession::draw()
     LLView::draw();
 }
 
-BOOL LLConversationViewSession::handleMouseDown( S32 x, S32 y, MASK mask )
+bool LLConversationViewSession::handleMouseDown( S32 x, S32 y, MASK mask )
 {
     //Will try to select a child node and then itself (if a child was not selected)
-    BOOL result = LLFolderViewFolder::handleMouseDown(x, y, mask);
+    bool result = LLFolderViewFolder::handleMouseDown(x, y, mask);
 
     //This node (conversation) was selected and a child (participant) was not
     if(result && getRoot())
@@ -351,9 +351,9 @@ BOOL LLConversationViewSession::handleMouseDown( S32 x, S32 y, MASK mask )
     return result;
 }
 
-BOOL LLConversationViewSession::handleMouseUp( S32 x, S32 y, MASK mask )
+bool LLConversationViewSession::handleMouseUp( S32 x, S32 y, MASK mask )
 {
-    BOOL result = LLFolderViewFolder::handleMouseUp(x, y, mask);
+    bool result = LLFolderViewFolder::handleMouseUp(x, y, mask);
 
     LLFloater* volume_floater = LLFloaterReg::findInstance("floater_voice_volume");
     LLFloater* chat_volume_floater = LLFloaterReg::findInstance("chat_voice");
@@ -374,9 +374,9 @@ BOOL LLConversationViewSession::handleMouseUp( S32 x, S32 y, MASK mask )
     return result;
 }
 
-BOOL LLConversationViewSession::handleRightMouseDown( S32 x, S32 y, MASK mask )
+bool LLConversationViewSession::handleRightMouseDown( S32 x, S32 y, MASK mask )
 {
-    BOOL result = LLFolderViewFolder::handleRightMouseDown(x, y, mask);
+    bool result = LLFolderViewFolder::handleRightMouseDown(x, y, mask);
 
     if(result)
     {
@@ -446,7 +446,7 @@ void LLConversationViewSession::toggleCollapsedMode(bool is_collapsed)
     mItemPanel->translate(mCollapsedMode ? -h_pad : h_pad, 0);
 }
 
-void LLConversationViewSession::setVisibleIfDetached(BOOL visible)
+void LLConversationViewSession::setVisibleIfDetached(bool visible)
 {
     // Do this only if the conversation floater has been torn off (i.e. no multi floater host) and is not minimized
     // Note: minimized dockable floaters are brought to front hence unminimized when made visible and we don't want that here
@@ -616,7 +616,7 @@ void LLConversationViewParticipant::initFromParams(const LLConversationViewParti
     addChild(outputMonitor);
 }
 
-BOOL LLConversationViewParticipant::postBuild()
+bool LLConversationViewParticipant::postBuild()
 {
     mAvatarIcon = getChild<LLAvatarIconCtrl>("avatar_icon");
 
@@ -640,7 +640,7 @@ BOOL LLConversationViewParticipant::postBuild()
         LLFolderViewItem::postBuild();
         refresh();
     }
-    return TRUE;
+    return true;
 }
 
 void LLConversationViewParticipant::draw()
@@ -653,7 +653,7 @@ void LLConversationViewParticipant::draw()
     static LLUIColor sFocusOutlineColor = LLUIColorTable::instance().getColor("InventoryFocusOutlineColor", DEFAULT_WHITE);
     static LLUIColor sMouseOverColor = LLUIColorTable::instance().getColor("InventoryMouseOverColor", DEFAULT_WHITE);
 
-    const BOOL show_context = (getRoot() ? getRoot()->getShowSelectionContext() : FALSE);
+    const bool show_context = (getRoot() ? getRoot()->getShowSelectionContext() : false);
 
     const LLFontGL* font = getLabelFontForStyle(mLabelStyle);
     F32 right_x  = 0;
@@ -765,9 +765,9 @@ void LLConversationViewParticipant::onInfoBtnClick()
     LLFloaterReg::showInstance("inspect_avatar", LLSD().with("avatar_id", mUUID));
 }
 
-BOOL LLConversationViewParticipant::handleMouseDown( S32 x, S32 y, MASK mask )
+bool LLConversationViewParticipant::handleMouseDown( S32 x, S32 y, MASK mask )
 {
-    BOOL result = LLFolderViewItem::handleMouseDown(x, y, mask);
+    bool result = LLFolderViewItem::handleMouseDown(x, y, mask);
 
     if(result && getRoot())
     {
diff --git a/indra/newview/llconversationview.h b/indra/newview/llconversationview.h
index 5f3e4bfe64..8eb6392121 100644
--- a/indra/newview/llconversationview.h
+++ b/indra/newview/llconversationview.h
@@ -69,11 +69,11 @@ public:
 
     /*virtual*/ void destroyView();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void draw();
-    /*virtual*/ BOOL handleMouseDown( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL handleRightMouseDown( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL handleMouseUp( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleMouseDown( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleRightMouseDown( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleMouseUp( S32 x, S32 y, MASK mask );
 
     /*virtual*/ S32 arrange(S32* width, S32* height);
 
@@ -83,7 +83,7 @@ public:
 
     void toggleCollapsedMode(bool is_collapsed);
 
-    void setVisibleIfDetached(BOOL visible);
+    void setVisibleIfDetached(bool visible);
     LLConversationViewParticipant* findParticipant(const LLUUID& participant_id);
 
     void showVoiceIndicator(bool visible);
@@ -151,14 +151,14 @@ public:
     void onMouseLeave(S32 x, S32 y, MASK mask);
 
     /*virtual*/ S32 getLabelXPos();
-    /*virtual*/ BOOL handleMouseDown( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleMouseDown( S32 x, S32 y, MASK mask );
     void allowSpeakingIndicator(bool val);
 
 protected:
     friend class LLUICtrlFactory;
     LLConversationViewParticipant( const Params& p );
     void initFromParams(const Params& params);
-    BOOL postBuild();
+    bool postBuild();
     /*virtual*/ void draw();
     /*virtual*/ S32 arrange(S32* width, S32* height);
 
diff --git a/indra/newview/llcurrencyuimanager.cpp b/indra/newview/llcurrencyuimanager.cpp
index 6726b6a111..06c87343e2 100644
--- a/indra/newview/llcurrencyuimanager.cpp
+++ b/indra/newview/llcurrencyuimanager.cpp
@@ -413,8 +413,8 @@ void LLCurrencyUIManager::Impl::currencyKey(S32 value)
         //cannot just simply refresh the whole UI, as the edit field will
         // get reset and the cursor will change...
 
-        mPanel.getChildView("currency_est")->setVisible(FALSE);
-        mPanel.getChildView("getting_data")->setVisible(TRUE);
+        mPanel.getChildView("currency_est")->setVisible(false);
+        mPanel.getChildView("getting_data")->setVisible(true);
     }
 
     mCurrencyChanged = true;
@@ -443,13 +443,13 @@ void LLCurrencyUIManager::Impl::updateUI()
 {
     if (mHidden)
     {
-        mPanel.getChildView("currency_action")->setVisible(FALSE);
-        mPanel.getChildView("currency_amt")->setVisible(FALSE);
-        mPanel.getChildView("currency_est")->setVisible(FALSE);
+        mPanel.getChildView("currency_action")->setVisible(false);
+        mPanel.getChildView("currency_amt")->setVisible(false);
+        mPanel.getChildView("currency_est")->setVisible(false);
         return;
     }
 
-    mPanel.getChildView("currency_action")->setVisible(TRUE);
+    mPanel.getChildView("currency_action")->setVisible(true);
 
     LLLineEditor* lindenAmount = mPanel.getChild<LLLineEditor>("currency_amt");
     if (lindenAmount)
@@ -483,7 +483,7 @@ void LLCurrencyUIManager::Impl::updateUI()
         ||mPanel.getChildView("currency_est")->getVisible()
         || mPanel.getChildView("error_web")->getVisible())
     {
-        mPanel.getChildView("getting_data")->setVisible(FALSE);
+        mPanel.getChildView("getting_data")->setVisible(false);
     }
 }
 
diff --git a/indra/newview/llcylinder.cpp b/indra/newview/llcylinder.cpp
index 6e1fd41b87..c347d3e1be 100644
--- a/indra/newview/llcylinder.cpp
+++ b/indra/newview/llcylinder.cpp
@@ -48,7 +48,7 @@ void LLCone::render(S32 sides)
     gGL.begin(LLRender::TRIANGLE_FAN);
     gGL.vertex3f(0,0,0);
 
-    for (U32 i = 0; i < sides; i++)
+    for (S32 i = 0; i < sides; i++)
     {
         F32 a = (F32) i/sides * F_PI*2.f;
         F32 x = cosf(a)*0.5f;
@@ -61,7 +61,7 @@ void LLCone::render(S32 sides)
 
     gGL.begin(LLRender::TRIANGLE_FAN);
     gGL.vertex3f(0.f, 0.f, 0.5f);
-    for (U32 i = 0; i < sides; i++)
+    for (S32 i = 0; i < sides; i++)
     {
         F32 a = (F32) i/sides * F_PI*2.f;
         F32 x = cosf(a)*0.5f;
diff --git a/indra/newview/lldebugmessagebox.cpp b/indra/newview/lldebugmessagebox.cpp
index 7d305fe261..91ea36706e 100644
--- a/indra/newview/lldebugmessagebox.cpp
+++ b/indra/newview/lldebugmessagebox.cpp
@@ -45,7 +45,7 @@ std::map<std::string, LLDebugVarMessageBox*> LLDebugVarMessageBox::sInstances;
 
 LLDebugVarMessageBox::LLDebugVarMessageBox(const std::string& title, EDebugVarType var_type, void *var) :
     LLFloater(LLSD()),
-    mVarType(var_type), mVarData(var), mAnimate(FALSE)
+    mVarType(var_type), mVarData(var), mAnimate(false)
 {
     setRect(LLRect(10,160,400,10));
 
diff --git a/indra/newview/lldebugmessagebox.h b/indra/newview/lldebugmessagebox.h
index e95fe5a192..3160ee24b5 100644
--- a/indra/newview/lldebugmessagebox.h
+++ b/indra/newview/lldebugmessagebox.h
@@ -80,7 +80,7 @@ protected:
     LLButton*       mAnimateButton;
     LLTextBox*      mText;
     std::string     mTitle;
-    BOOL            mAnimate;
+    bool            mAnimate;
 
     static std::map<std::string, LLDebugVarMessageBox*> sInstances;
 };
diff --git a/indra/newview/lldebugview.cpp b/indra/newview/lldebugview.cpp
index 12b38458a2..b88d11886a 100644
--- a/indra/newview/lldebugview.cpp
+++ b/indra/newview/lldebugview.cpp
@@ -94,14 +94,14 @@ void LLDebugView::init()
     gSceneView = new LLSceneView(r);
     gSceneView->setFollowsTop();
     gSceneView->setFollowsLeft();
-    gSceneView->setVisible(FALSE);
+    gSceneView->setVisible(false);
     addChild(gSceneView);
     gSceneView->setRect(rect);
 
     gSceneMonitorView = new LLSceneMonitorView(r);
     gSceneMonitorView->setFollowsTop();
     gSceneMonitorView->setFollowsLeft();
-    gSceneMonitorView->setVisible(FALSE);
+    gSceneMonitorView->setVisible(false);
     addChild(gSceneMonitorView);
     gSceneMonitorView->setRect(rect);
 
@@ -116,7 +116,7 @@ void LLDebugView::init()
     tvp.visible(false);
     gTextureView = LLUICtrlFactory::create<LLTextureView>(tvp);
     addChild(gTextureView);
-    //gTextureView->reshape(r.getWidth(), r.getHeight(), TRUE);
+    //gTextureView->reshape(r.getWidth(), r.getHeight(), true);
 }
 
 void LLDebugView::draw()
diff --git a/indra/newview/lldebugview.h b/indra/newview/lldebugview.h
index 0f6da06a6f..8fa2acc3c9 100644
--- a/indra/newview/lldebugview.h
+++ b/indra/newview/lldebugview.h
@@ -57,7 +57,7 @@ public:
     void init();
     void draw();
 
-    void setStatsVisible(BOOL visible);
+    void setStatsVisible(bool visible);
 
     LLFastTimerView* mFastTimerView;
     LLConsole*       mDebugConsolep;
diff --git a/indra/newview/lldensityctrl.cpp b/indra/newview/lldensityctrl.cpp
deleted file mode 100644
index 3997227ef0..0000000000
--- a/indra/newview/lldensityctrl.cpp
+++ /dev/null
@@ -1,225 +0,0 @@
-/**
-* @file lldensityctrl.cpp
-* @brief Control for specifying density over a height range for sky settings.
-*
-* $LicenseInfo:firstyear=2011&license=viewerlgpl$
-* Second Life Viewer Source Code
-* Copyright (C) 2011, Linden Research, Inc.
-*
-* This library is free software; you can redistribute it and/or
-* modify it under the terms of the GNU Lesser General Public
-* License as published by the Free Software Foundation;
-* version 2.1 of the License only.
-*
-* This library is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-* Lesser General Public License for more details.
-*
-* You should have received a copy of the GNU Lesser General Public
-* License along with this library; if not, write to the Free Software
-* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-*
-* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
-* $/LicenseInfo$
-*/
-
-#include "llviewerprecompiledheaders.h"
-
-#include "lldensityctrl.h"
-
-#include "llslider.h"
-#include "llsliderctrl.h"
-#include "llsettingssky.h"
-
-static LLDefaultChildRegistry::Register<LLDensityCtrl> register_density_control("densityctrl");
-
-const std::string LLDensityCtrl::DENSITY_RAYLEIGH("density_rayleigh");
-const std::string LLDensityCtrl::DENSITY_MIE("density_mie");
-const std::string LLDensityCtrl::DENSITY_ABSORPTION("density_absorption");
-
-namespace
-{
-    const std::string   FIELD_SKY_DENSITY_PROFILE_EXPONENTIAL("level_exponential");
-    const std::string   FIELD_SKY_DENSITY_PROFILE_EXPONENTIAL_SCALE("exponential_scale");
-    const std::string   FIELD_SKY_DENSITY_PROFILE_LINEAR("level_linear");
-    const std::string   FIELD_SKY_DENSITY_PROFILE_CONSTANT("level_constant");
-    const std::string   FIELD_SKY_DENSITY_MAX_ALTITUDE("max_altitude");
-    const std::string   FIELD_SKY_DENSITY_ANISO_FACTOR("aniso_factor");
-    const std::string   FIELD_SKY_DENSITY_ANISO_FACTOR_LABEL("aniso_factor_label");
-}
-
-const std::string& LLDensityCtrl::NameForDensityProfileType(DensityProfileType t)
-{
-    switch (t)
-    {
-        case Rayleigh:   return DENSITY_RAYLEIGH;
-        case Mie:        return DENSITY_MIE;
-        case Absorption: return DENSITY_ABSORPTION;
-        default:
-            break;
-    }
-
-    llassert(false);
-    return DENSITY_RAYLEIGH;
-}
-
-LLDensityCtrl::Params::Params()
-: image_density_feedback("image_density_feedback")
-, lbl_exponential("label_exponential")
-, lbl_exponential_scale("label_exponential_scale")
-, lbl_linear("label_linear")
-, lbl_constant("label_constant")
-, lbl_max_altitude("label_max_altitude")
-, lbl_aniso_factor("label_aniso_factor")
-, profile_type(LLDensityCtrl::Rayleigh)
-{
-}
-
-LLDensityCtrl::LLDensityCtrl(const Params& params)
-: mProfileType(params.profile_type)
-, mImgDensityFeedback(params.image_density_feedback)
-{
-
-}
-
-LLSD LLDensityCtrl::getProfileConfig()
-{
-    LLSD config;
-    switch (mProfileType)
-    {
-        case Rayleigh:   return mSkySettings->getRayleighConfigs();
-        case Mie:        return mSkySettings->getMieConfigs();
-        case Absorption: return mSkySettings->getAbsorptionConfigs();
-        default:
-            break;
-    }
-    llassert(false);
-    return config;
-}
-
-BOOL LLDensityCtrl::postBuild()
-{
-    getChild<LLUICtrl>(FIELD_SKY_DENSITY_PROFILE_EXPONENTIAL)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onExponentialChanged(); });
-    getChild<LLUICtrl>(FIELD_SKY_DENSITY_PROFILE_EXPONENTIAL_SCALE)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onExponentialScaleFactorChanged(); });
-    getChild<LLUICtrl>(FIELD_SKY_DENSITY_PROFILE_LINEAR)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onLinearChanged(); });
-    getChild<LLUICtrl>(FIELD_SKY_DENSITY_PROFILE_CONSTANT)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onConstantChanged(); });
-    getChild<LLUICtrl>(FIELD_SKY_DENSITY_MAX_ALTITUDE)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onMaxAltitudeChanged(); });
-    getChild<LLUICtrl>(FIELD_SKY_DENSITY_ANISO_FACTOR)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onAnisoFactorChanged(); });
-
-    if (mProfileType != Mie)
-    {
-        getChild<LLUICtrl>(FIELD_SKY_DENSITY_ANISO_FACTOR_LABEL)->setValue(false);
-        getChild<LLUICtrl>(FIELD_SKY_DENSITY_ANISO_FACTOR)->setVisible(false);
-    }
-
-    return TRUE;
-}
-
-void LLDensityCtrl::setEnabled(BOOL enabled)
-{
-    getChild<LLUICtrl>(FIELD_SKY_DENSITY_PROFILE_EXPONENTIAL)->setEnabled(enabled);
-    getChild<LLUICtrl>(FIELD_SKY_DENSITY_PROFILE_EXPONENTIAL_SCALE)->setEnabled(enabled);
-    getChild<LLUICtrl>(FIELD_SKY_DENSITY_PROFILE_LINEAR)->setEnabled(enabled);
-    getChild<LLUICtrl>(FIELD_SKY_DENSITY_PROFILE_CONSTANT)->setEnabled(enabled);
-    getChild<LLUICtrl>(FIELD_SKY_DENSITY_MAX_ALTITUDE)->setEnabled(enabled);
-
-    if (mProfileType == Mie)
-    {
-        getChild<LLUICtrl>(FIELD_SKY_DENSITY_ANISO_FACTOR)->setEnabled(enabled);
-    }
-}
-
-void LLDensityCtrl::refresh()
-{
-    if (!mSkySettings)
-    {
-        setAllChildrenEnabled(FALSE);
-        setEnabled(FALSE);
-        return;
-    }
-
-    setEnabled(TRUE);
-    setAllChildrenEnabled(TRUE);
-
-    LLSD config = getProfileConfig();
-
-    getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_PROFILE_EXPONENTIAL)->setValue(config[LLSettingsSky::SETTING_DENSITY_PROFILE_EXP_TERM]);
-    getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_PROFILE_EXPONENTIAL_SCALE)->setValue(config[LLSettingsSky::SETTING_DENSITY_PROFILE_EXP_SCALE_FACTOR]);
-    getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_PROFILE_LINEAR)->setValue(config[LLSettingsSky::SETTING_DENSITY_PROFILE_LINEAR_TERM]);
-    getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_PROFILE_CONSTANT)->setValue(config[LLSettingsSky::SETTING_DENSITY_PROFILE_CONSTANT_TERM]);
-    getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_MAX_ALTITUDE)->setValue(config[LLSettingsSky::SETTING_DENSITY_PROFILE_WIDTH]);
-
-    if (mProfileType == Mie)
-    {
-        getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_ANISO_FACTOR)->setValue(config[LLSettingsSky::SETTING_MIE_ANISOTROPY_FACTOR]);
-    }
-}
-
-void LLDensityCtrl::updateProfile()
-{
-    F32 exponential_term  = getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_PROFILE_EXPONENTIAL)->getValueF32();
-    F32 exponential_scale = getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_PROFILE_EXPONENTIAL_SCALE)->getValueF32();
-    F32 linear_term       = getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_PROFILE_LINEAR)->getValueF32();
-    F32 constant_term     = getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_PROFILE_CONSTANT)->getValueF32();
-    F32 max_alt           = getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_MAX_ALTITUDE)->getValueF32();
-    F32 aniso_factor      = 0.0f;
-
-    if (mProfileType == Mie)
-    {
-        aniso_factor = getChild<LLSliderCtrl>(FIELD_SKY_DENSITY_ANISO_FACTOR)->getValueF32();
-    }
-
-    LLSD profile = LLSettingsSky::createSingleLayerDensityProfile(max_alt, exponential_term, exponential_scale, linear_term, constant_term, aniso_factor);
-
-    switch (mProfileType)
-    {
-        case Rayleigh: mSkySettings->setRayleighConfigs(profile); break;
-        case Mie: mSkySettings->setMieConfigs(profile); break;
-        case Absorption: mSkySettings->setAbsorptionConfigs(profile); break;
-        default:
-            break;
-    }
-}
-
-void LLDensityCtrl::onExponentialChanged()
-{
-    updateProfile();
-    updatePreview();
-}
-
-void LLDensityCtrl::onExponentialScaleFactorChanged()
-{
-    updateProfile();
-    updatePreview();
-}
-
-void LLDensityCtrl::onLinearChanged()
-{
-    updateProfile();
-    updatePreview();
-}
-
-void LLDensityCtrl::onConstantChanged()
-{
-    updateProfile();
-    updatePreview();
-}
-
-void LLDensityCtrl::onMaxAltitudeChanged()
-{
-    updateProfile();
-    updatePreview();
-}
-
-void LLDensityCtrl::onAnisoFactorChanged()
-{
-    updateProfile();
-}
-
-void LLDensityCtrl::updatePreview()
-{
-    // AdvancedAtmospherics TODO
-    // Generate image according to current density profile
-}
-
diff --git a/indra/newview/lldensityctrl.h b/indra/newview/lldensityctrl.h
deleted file mode 100644
index 1bc0f0ef1a..0000000000
--- a/indra/newview/lldensityctrl.h
+++ /dev/null
@@ -1,104 +0,0 @@
-/**
-* @file lldensityctrl.h
-* @brief Control for specifying density over a height range for sky settings.
-*
-* $LicenseInfo:firstyear=2011&license=viewerlgpl$
-* Second Life Viewer Source Code
-* Copyright (C) 2011, Linden Research, Inc.
-*
-* This library is free software; you can redistribute it and/or
-* modify it under the terms of the GNU Lesser General Public
-* License as published by the Free Software Foundation;
-* version 2.1 of the License only.
-*
-* This library is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-* Lesser General Public License for more details.
-*
-* You should have received a copy of the GNU Lesser General Public
-* License along with this library; if not, write to the Free Software
-* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-*
-* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
-* $/LicenseInfo$
-*/
-
-#ifndef LLDENSITY_CTRL_H
-#define LLDENSITY_CTRL_H
-
-#include "lluictrl.h"
-#include "llsettingssky.h"
-#include "lltextbox.h"
-#include "llsliderctrl.h"
-
-class LLDensityCtrl : public LLUICtrl
-{
-public:
-    static const std::string DENSITY_RAYLEIGH;
-    static const std::string DENSITY_MIE;
-    static const std::string DENSITY_ABSORPTION;
-
-    // Type of density profile this tab is updating
-    enum DensityProfileType
-    {
-        Rayleigh,
-        Mie,
-        Absorption
-    };
-
-    static const std::string& NameForDensityProfileType(DensityProfileType t);
-
-    struct Params : public LLInitParam::Block<Params, LLUICtrl::Params>
-    {
-        Optional<LLTextBox::Params>         lbl_exponential,
-            lbl_exponential_scale,
-            lbl_linear,
-            lbl_constant,
-            lbl_max_altitude,
-            lbl_aniso_factor;
-
-        Optional<LLSliderCtrl::Params> exponential_slider,
-        exponential_scale_slider,
-        linear_slider,
-        constant_slider,
-        aniso_factor_slider;
-
-        Optional<LLUIImage*> image_density_feedback;
-
-        DensityProfileType profile_type;
-        Params();
-    };
-
-    virtual BOOL            postBuild() override;
-    virtual void            setEnabled(BOOL enabled) override;
-
-    void setProfileType(DensityProfileType t) { mProfileType = t; }
-
-    void refresh();
-    void updateProfile();
-
-    LLSettingsSky::ptr_t    getSky() const                                          { return mSkySettings; }
-    void                    setSky(const LLSettingsSky::ptr_t &sky)                 { mSkySettings = sky; refresh(); }
-
-protected:
-    friend class LLUICtrlFactory;
-    LLDensityCtrl(const Params&);
-
-    LLSD getProfileConfig();
-    void updatePreview();
-
-private:
-    void onExponentialChanged();
-    void onExponentialScaleFactorChanged();
-    void onLinearChanged();
-    void onConstantChanged();
-    void onMaxAltitudeChanged();
-    void onAnisoFactorChanged();
-
-    DensityProfileType    mProfileType = Rayleigh;
-    LLUIImage*            mImgDensityFeedback = nullptr;
-    LLSettingsSky::ptr_t  mSkySettings;
-};
-
-#endif LLDENSITY_CTRL_H
diff --git a/indra/newview/lldirpicker.cpp b/indra/newview/lldirpicker.cpp
index a228cd7159..defbbdec25 100644
--- a/indra/newview/lldirpicker.cpp
+++ b/indra/newview/lldirpicker.cpp
@@ -45,11 +45,6 @@
   #include "FL/Fl.H"
   #include "FL/Fl_Native_File_Chooser.H"
 #endif
-//
-// Globals
-//
-
-LLDirPicker LLDirPicker::sInstance;
 
 #if LL_WINDOWS
 #include <shlobj.h>
@@ -79,63 +74,90 @@ bool LLDirPicker::check_local_file_access_enabled()
 
 LLDirPicker::LLDirPicker() :
     mFileName(NULL),
-    mLocked(false)
+    mLocked(false),
+    pDialog(NULL)
 {
-    bi.hwndOwner = NULL;
-    bi.pidlRoot = NULL;
-    bi.pszDisplayName = NULL;
-    bi.lpszTitle = NULL;
-    bi.ulFlags = BIF_USENEWUI;
-    bi.lpfn = NULL;
-    bi.lParam = NULL;
-    bi.iImage = 0;
 }
 
 LLDirPicker::~LLDirPicker()
 {
-    // nothing
+    mEventListener.disconnect();
 }
 
-BOOL LLDirPicker::getDir(std::string* filename, bool blocking)
+void LLDirPicker::reset()
 {
-    if( mLocked )
+    if (pDialog)
     {
-        return FALSE;
+        IFileDialog* p_file_dialog = (IFileDialog*)pDialog;
+        p_file_dialog->Close(S_FALSE);
+        pDialog = NULL;
     }
+}
 
-    // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+bool LLDirPicker::getDir(std::string* filename, bool blocking)
+{
+    if (mLocked)
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL success = FALSE;
+    // if local file browsing is turned off, return without opening dialog
+    if (!check_local_file_access_enabled())
+    {
+        return false;
+    }
 
+    bool success = false;
 
     if (blocking)
     {
         // Modal, so pause agent
         send_agent_pause();
     }
-
-    bi.hwndOwner = (HWND)gViewerWindow->getPlatformWindow();
+    else if (!mEventListener.connected())
+    {
+        mEventListener = LLEventPumps::instance().obtain("LLApp").listen(
+            "DirPicker",
+            [this](const LLSD& stat)
+            {
+                std::string status(stat["status"]);
+                if (status != "running")
+                {
+                    reset();
+                }
+                return false;
+            });
+    }
 
     ::OleInitialize(NULL);
-    LPITEMIDLIST pIDL = ::SHBrowseForFolder(&bi);
 
-    if(pIDL != NULL)
+    IFileDialog* p_file_dialog;
+    if (SUCCEEDED(CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&p_file_dialog))))
     {
-        WCHAR buffer[_MAX_PATH] = {'\0'};
-
-        if(::SHGetPathFromIDList(pIDL, buffer) != 0)
+        DWORD dwOptions;
+        if (SUCCEEDED(p_file_dialog->GetOptions(&dwOptions)))
         {
-            // Set the string value.
-
-            mDir = utf16str_to_utf8str(llutf16string(buffer));
-            success = TRUE;
+            p_file_dialog->SetOptions(dwOptions | FOS_PICKFOLDERS);
         }
-        // free the item id list
-        CoTaskMemFree(pIDL);
+        HWND owner = (HWND)gViewerWindow->getPlatformWindow();
+        pDialog = p_file_dialog;
+        if (SUCCEEDED(p_file_dialog->Show(owner)))
+        {
+            IShellItem* psi;
+            if (SUCCEEDED(p_file_dialog->GetResult(&psi)))
+            {
+                wchar_t* pwstr = NULL;
+                if (SUCCEEDED(psi->GetDisplayName(SIGDN_FILESYSPATH, &pwstr)))
+                {
+                    mDir = ll_convert_wide_to_string(pwstr);
+                    CoTaskMemFree(pwstr);
+                    success = true;
+                }
+                psi->Release();
+            }
+        }
+        pDialog = NULL;
+        p_file_dialog->Release();
     }
 
     ::OleUninitialize();
@@ -179,7 +201,7 @@ void LLDirPicker::reset()
 
 
 //static
-BOOL LLDirPicker::getDir(std::string* filename, bool blocking)
+bool LLDirPicker::getDir(std::string* filename, bool blocking)
 {
     LLFilePicker::ELoadFilter filter=LLFilePicker::FFLOAD_DIRECTORY;
 
@@ -221,14 +243,14 @@ void LLDirPicker::reset()
 #endif
 }
 
-BOOL LLDirPicker::getDir(std::string* filename, bool blocking)
+bool LLDirPicker::getDir(std::string* filename, bool blocking)
 {
     reset();
 
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
-        return FALSE;
+        return false;
     }
 
 #ifdef LL_FLTK
@@ -281,9 +303,9 @@ void LLDirPicker::reset()
 {
 }
 
-BOOL LLDirPicker::getDir(std::string* filename, bool blocking)
+bool LLDirPicker::getDir(std::string* filename, bool blocking)
 {
-    return FALSE;
+    return false;
 }
 
 std::string LLDirPicker::getDirName()
diff --git a/indra/newview/lldirpicker.h b/indra/newview/lldirpicker.h
index fd56f37310..4bbe7db144 100644
--- a/indra/newview/lldirpicker.h
+++ b/indra/newview/lldirpicker.h
@@ -57,10 +57,7 @@ class LLFilePicker;
 class LLDirPicker
 {
 public:
-    // calling this before main() is undefined
-    static LLDirPicker& instance( void ) { return sInstance; }
-
-    BOOL getDir(std::string* filename, bool blocking = true);
+    bool getDir(std::string* filename, bool blocking = true);
     std::string getDirName();
 
     // clear any lists of buffers or whatever, and make sure the dir
@@ -89,11 +86,8 @@ private:
     std::string* mFileName;
     std::string  mDir;
     bool mLocked;
-
-    static LLDirPicker sInstance;
-#if LL_WINDOWS
-    BROWSEINFO bi;
-#endif
+    void *pDialog;
+    boost::signals2::connection mEventListener;
 
 public:
     // don't call these directly please.
diff --git a/indra/newview/lldndbutton.cpp b/indra/newview/lldndbutton.cpp
index 5f8d02e3aa..6ba2de1589 100644
--- a/indra/newview/lldndbutton.cpp
+++ b/indra/newview/lldndbutton.cpp
@@ -35,7 +35,7 @@ LLDragAndDropButton::LLDragAndDropButton(const Params& params)
 : LLButton(params)
 {}
 
-BOOL LLDragAndDropButton::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept, std::string& tooltip_msg)
+bool LLDragAndDropButton::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept, std::string& tooltip_msg)
 {
     if (mDragDropHandler)
     {
diff --git a/indra/newview/lldndbutton.h b/indra/newview/lldndbutton.h
index 8a790600e9..277c2aad69 100644
--- a/indra/newview/lldndbutton.h
+++ b/indra/newview/lldndbutton.h
@@ -48,7 +48,7 @@ public:
     LLDragAndDropButton(const Params& params);
 
     typedef boost::function<bool (
-        S32 /*x*/, S32 /*y*/, MASK /*mask*/, BOOL /*drop*/,
+        S32 /*x*/, S32 /*y*/, MASK /*mask*/, bool /*drop*/,
         EDragAndDropType /*cargo_type*/,
         void* /*cargo_data*/,
         EAcceptance* /*accept*/,
@@ -64,9 +64,9 @@ public:
     /**
      * Process Drag-And-Drop by delegating the event to drag_drop_handler_t.
      *
-     * @return BOOL - value returned by drag_drop_handler_t if it is set, FALSE otherwise.
+     * @return bool - value returned by drag_drop_handler_t if it is set, false otherwise.
      */
-    /*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    /*virtual*/ bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
         EDragAndDropType cargo_type,
         void* cargo_data,
         EAcceptance* accept,
diff --git a/indra/newview/lldonotdisturbnotificationstorage.cpp b/indra/newview/lldonotdisturbnotificationstorage.cpp
index 18456d132f..b4ced668d0 100644
--- a/indra/newview/lldonotdisturbnotificationstorage.cpp
+++ b/indra/newview/lldonotdisturbnotificationstorage.cpp
@@ -55,7 +55,7 @@ LLDoNotDisturbNotificationStorageTimer::~LLDoNotDisturbNotificationStorageTimer(
 
 }
 
-BOOL LLDoNotDisturbNotificationStorageTimer::tick()
+bool LLDoNotDisturbNotificationStorageTimer::tick()
 {
     LLDoNotDisturbNotificationStorage * doNotDisturbNotificationStorage =  LLDoNotDisturbNotificationStorage::getInstance();
 
@@ -64,7 +64,7 @@ BOOL LLDoNotDisturbNotificationStorageTimer::tick()
     {
         doNotDisturbNotificationStorage->saveNotifications();
     }
-    return FALSE;
+    return false;
 }
 
 LLDoNotDisturbNotificationStorage::LLDoNotDisturbNotificationStorage()
diff --git a/indra/newview/lldonotdisturbnotificationstorage.h b/indra/newview/lldonotdisturbnotificationstorage.h
index 1432d37de6..6683646a9b 100644
--- a/indra/newview/lldonotdisturbnotificationstorage.h
+++ b/indra/newview/lldonotdisturbnotificationstorage.h
@@ -42,7 +42,7 @@ public:
     ~LLDoNotDisturbNotificationStorageTimer();
 
 public:
-    BOOL tick();
+    bool tick();
 };
 
 class LLDoNotDisturbNotificationStorage : public LLParamSingleton<LLDoNotDisturbNotificationStorage>, public LLNotificationStorage
diff --git a/indra/newview/lldrawable.cpp b/indra/newview/lldrawable.cpp
index 12a7a22e24..26fdf51485 100644
--- a/indra/newview/lldrawable.cpp
+++ b/indra/newview/lldrawable.cpp
@@ -232,7 +232,7 @@ const LLMatrix4& LLDrawable::getRenderMatrix() const
     return isRoot() ? getWorldMatrix() : getParent()->getWorldMatrix();
 }
 
-BOOL LLDrawable::isLight() const
+bool LLDrawable::isLight() const
 {
     LLViewerObject* objectp = mVObjp;
     if ( objectp && (objectp->getPCode() == LL_PCODE_VOLUME) && !isDead())
@@ -241,7 +241,7 @@ BOOL LLDrawable::isLight() const
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -339,7 +339,7 @@ LLFace* LLDrawable::addFace(const LLTextureEntry *te, LLViewerTexture *texturep)
 
     face = new LLFace(this, mVObjp);
 
-    face->setTEOffset(mFaces.size());
+    face->setTEOffset(static_cast<S32>(mFaces.size()));
     face->setTexture(texturep);
     face->setPoolType(gPipeline.getPoolTypeFromTE(te, texturep));
 
@@ -361,7 +361,7 @@ LLFace* LLDrawable::addFace(const LLTextureEntry *te, LLViewerTexture *texturep,
     LLFace *face;
     face = new LLFace(this, mVObjp);
 
-    face->setTEOffset(mFaces.size());
+    face->setTEOffset(static_cast<S32>(mFaces.size()));
     face->setTexture(texturep);
     face->setNormalMap(normalp);
     face->setPoolType(gPipeline.getPoolTypeFromTE(te, texturep));
@@ -384,7 +384,7 @@ LLFace* LLDrawable::addFace(const LLTextureEntry *te, LLViewerTexture *texturep,
     LLFace *face;
     face = new LLFace(this, mVObjp);
 
-    face->setTEOffset(mFaces.size());
+    face->setTEOffset(static_cast<S32>(mFaces.size()));
     face->setTexture(texturep);
     face->setNormalMap(normalp);
     face->setSpecularMap(specularp);
@@ -417,7 +417,7 @@ void LLDrawable::setNumFaces(const S32 newFaces, LLFacePool *poolp, LLViewerText
     else // (newFaces > mFaces.size())
     {
         mFaces.reserve(newFaces);
-        for (int i = mFaces.size(); i<newFaces; i++)
+        for (auto i = mFaces.size(); i<newFaces; i++)
         {
             addFace(poolp, texturep);
         }
@@ -442,7 +442,7 @@ void LLDrawable::setNumFacesFast(const S32 newFaces, LLFacePool *poolp, LLViewer
     else // (newFaces > mFaces.size())
     {
         mFaces.reserve(newFaces);
-        for (int i = mFaces.size(); i<newFaces; i++)
+        for (auto i = mFaces.size(); i<newFaces; i++)
         {
             addFace(poolp, texturep);
         }
@@ -455,10 +455,10 @@ void LLDrawable::mergeFaces(LLDrawable* src)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWABLE
 
-    U32 face_count = mFaces.size() + src->mFaces.size();
+    auto face_count = mFaces.size() + src->mFaces.size();
 
     mFaces.reserve(face_count);
-    for (U32 i = 0; i < src->mFaces.size(); i++)
+    for (size_t i = 0; i < src->mFaces.size(); i++)
     {
         LLFace* facep = src->mFaces[i];
         facep->setDrawable(this);
@@ -550,7 +550,7 @@ void LLDrawable::makeActive()
 }
 
 
-void LLDrawable::makeStatic(BOOL warning_enabled)
+void LLDrawable::makeStatic(bool warning_enabled)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWABLE
 
@@ -598,11 +598,11 @@ void LLDrawable::makeStatic(BOOL warning_enabled)
 }
 
 // Returns "distance" between target destination and resulting xfrom
-F32 LLDrawable::updateXform(BOOL undamped)
+F32 LLDrawable::updateXform(bool undamped)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWABLE
 
-    BOOL damped = !undamped;
+    bool damped = !undamped;
 
     // Position
     const LLVector3 old_pos(mXform.getPosition());
@@ -721,7 +721,7 @@ F32 LLDrawable::updateXform(BOOL undamped)
 
     if (mSpatialBridge)
     {
-        gPipeline.markMoved(mSpatialBridge, FALSE);
+        gPipeline.markMoved(mSpatialBridge, false);
     }
     return dist_squared;
 }
@@ -734,7 +734,7 @@ void LLDrawable::setRadius(F32 radius)
     }
 }
 
-void LLDrawable::moveUpdatePipeline(BOOL moved)
+void LLDrawable::moveUpdatePipeline(bool moved)
 {
     if (moved)
     {
@@ -763,17 +763,17 @@ void LLDrawable::movePartition()
     }
 }
 
-BOOL LLDrawable::updateMove()
+bool LLDrawable::updateMove()
 {
     if (isDead())
     {
         LL_WARNS() << "Update move on dead drawable!" << LL_ENDL;
-        return TRUE;
+        return true;
     }
 
     if (mVObjp.isNull())
     {
-        return FALSE;
+        return false;
     }
 
     makeActive();
@@ -781,21 +781,21 @@ BOOL LLDrawable::updateMove()
     return isState(MOVE_UNDAMPED) ? updateMoveUndamped() : updateMoveDamped();
 }
 
-BOOL LLDrawable::updateMoveUndamped()
+bool LLDrawable::updateMoveUndamped()
 {
-    F32 dist_squared = updateXform(TRUE);
+    F32 dist_squared = updateXform(true);
 
     mGeneration++;
 
     if (!isState(LLDrawable::INVISIBLE))
     {
-        BOOL moved = (dist_squared > 0.001f && dist_squared < 255.99f);
+        bool moved = (dist_squared > 0.001f && dist_squared < 255.99f);
         moveUpdatePipeline(moved);
         mVObjp->updateText();
     }
 
     mVObjp->clearChanged(LLXform::MOVED);
-    return TRUE;
+    return true;
 }
 
 void LLDrawable::updatePartition()
@@ -808,7 +808,7 @@ void LLDrawable::updatePartition()
     }
     else if (mSpatialBridge)
     {
-        gPipeline.markMoved(mSpatialBridge, FALSE);
+        gPipeline.markMoved(mSpatialBridge, false);
     }
     else
     {
@@ -817,22 +817,22 @@ void LLDrawable::updatePartition()
     }
 }
 
-BOOL LLDrawable::updateMoveDamped()
+bool LLDrawable::updateMoveDamped()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWABLE
 
-    F32 dist_squared = updateXform(FALSE);
+    F32 dist_squared = updateXform(false);
 
     mGeneration++;
 
     if (!isState(LLDrawable::INVISIBLE))
     {
-        BOOL moved = (dist_squared > 0.001f && dist_squared < 128.0f);
+        bool moved = (dist_squared > 0.001f && dist_squared < 128.0f);
         moveUpdatePipeline(moved);
         mVObjp->updateText();
     }
 
-    BOOL done_moving = (dist_squared == 0.0f) ? TRUE : FALSE;
+    bool done_moving = dist_squared == 0.0f;
 
     if (done_moving)
     {
@@ -942,12 +942,12 @@ void LLDrawable::updateTexture()
     }
 }
 
-BOOL LLDrawable::updateGeometry()
+bool LLDrawable::updateGeometry()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWABLE
 
     llassert(mVObjp.notNull());
-    BOOL res = mVObjp && mVObjp->updateGeometry(this);
+    bool res = mVObjp && mVObjp->updateGeometry(this);
     return res;
 }
 
@@ -1054,7 +1054,7 @@ void LLDrawable::updateBinRadius()
     }
 }
 
-void LLDrawable::updateSpecialHoverCursor(BOOL enabled)
+void LLDrawable::updateSpecialHoverCursor(bool enabled)
 {
     // TODO: maintain a list of objects that have special
     // hover cursors, then use that list for per-frame
@@ -1244,7 +1244,7 @@ LLSpatialPartition* LLDrawable::getSpatialPartition()
 // Spatial Partition Bridging Drawable
 //=======================================
 
-LLSpatialBridge::LLSpatialBridge(LLDrawable* root, BOOL render_by_group, U32 data_mask, LLViewerRegion* regionp) :
+LLSpatialBridge::LLSpatialBridge(LLDrawable* root, bool render_by_group, U32 data_mask, LLViewerRegion* regionp) :
     LLDrawable(root->getVObj(), true),
     LLSpatialPartition(data_mask, render_by_group, regionp)
 {
@@ -1409,7 +1409,7 @@ void LLSpatialBridge::transformExtents(const LLVector4a* src, LLVector4a* dst)
 }
 
 
-void LLDrawable::setVisible(LLCamera& camera, std::vector<LLDrawable*>* results, BOOL for_select)
+void LLDrawable::setVisible(LLCamera& camera, std::vector<LLDrawable*>* results, bool for_select)
 {
     LLViewerOctreeEntryData::setVisible();
 
@@ -1466,7 +1466,7 @@ public:
     }
 };
 
-void LLSpatialBridge::setVisible(LLCamera& camera_in, std::vector<LLDrawable*>* results, BOOL for_select)
+void LLSpatialBridge::setVisible(LLCamera& camera_in, std::vector<LLDrawable*>* results, bool for_select)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWABLE
 
@@ -1489,8 +1489,8 @@ void LLSpatialBridge::setVisible(LLCamera& camera_in, std::vector<LLDrawable*>*
             av = objparent->mDrawable;
             LLSpatialGroup* group = av->getSpatialGroup();
 
-            BOOL impostor = FALSE;
-            BOOL loaded = FALSE;
+            bool impostor = false;
+            bool loaded = false;
             if (objparent->isAvatar())
             {
                 LLVOAvatar* avatarp = (LLVOAvatar*) objparent;
@@ -1624,13 +1624,13 @@ void LLSpatialBridge::makeActive()
     LL_ERRS() << "makeActive called on spatial bridge" << LL_ENDL;
 }
 
-void LLSpatialBridge::move(LLDrawable *drawablep, LLSpatialGroup *curp, BOOL immediate)
+void LLSpatialBridge::move(LLDrawable *drawablep, LLSpatialGroup *curp, bool immediate)
 {
     LLSpatialPartition::move(drawablep, curp, immediate);
-    gPipeline.markMoved(this, FALSE);
+    gPipeline.markMoved(this, false);
 }
 
-BOOL LLSpatialBridge::updateMove()
+bool LLSpatialBridge::updateMove()
 {
     llassert_always(mDrawable);
     llassert_always(mDrawable->mVObjp);
@@ -1641,9 +1641,9 @@ BOOL LLSpatialBridge::updateMove()
     mOctree->balance();
     if (part)
     {
-        part->move(this, getSpatialGroup(), TRUE);
+        part->move(this, getSpatialGroup(), true);
     }
-    return TRUE;
+    return true;
 }
 
 void LLSpatialBridge::shiftPos(const LLVector4a& vec)
@@ -1703,33 +1703,33 @@ const LLVector3 LLDrawable::getPositionAgent() const
     }
 }
 
-BOOL LLDrawable::isAnimating() const
+bool LLDrawable::isAnimating() const
 {
     if (!getVObj())
     {
-        return TRUE;
+        return true;
     }
 
     if (getScale() != mVObjp->getScale())
     {
-        return TRUE;
+        return true;
     }
 
     if (mVObjp->getPCode() == LLViewerObject::LL_VO_PART_GROUP)
     {
-        return TRUE;
+        return true;
     }
     if (mVObjp->getPCode() == LLViewerObject::LL_VO_HUD_PART_GROUP)
     {
-        return TRUE;
+        return true;
     }
 
     /*if (!isRoot() && !mVObjp->getAngularVelocity().isExactlyZero())
     { //target omega
-        return TRUE;
+        return true;
     }*/
 
-    return FALSE;
+    return false;
 }
 
 void LLDrawable::updateFaceSize(S32 idx)
diff --git a/indra/newview/lldrawable.h b/indra/newview/lldrawable.h
index 726667813a..a7ac9da618 100644
--- a/indra/newview/lldrawable.h
+++ b/indra/newview/lldrawable.h
@@ -84,13 +84,13 @@ public:
     LLDrawable(LLViewerObject *vobj, bool new_entry = false);
 
     void markDead();            // Mark this drawable as dead
-    BOOL isDead() const         { return isState(DEAD); }
-    BOOL isNew() const          { return !isState(BUILT); }
-    BOOL isUnload() const       { return isState(FOR_UNLOAD); }
+    bool isDead() const         { return isState(DEAD); }
+    bool isNew() const          { return !isState(BUILT); }
+    bool isUnload() const       { return isState(FOR_UNLOAD); }
 
-    BOOL isLight() const;
+    bool isLight() const;
 
-    virtual void setVisible(LLCamera& camera_in, std::vector<LLDrawable*>* results = NULL, BOOL for_select = FALSE);
+    virtual void setVisible(LLCamera& camera_in, std::vector<LLDrawable*>* results = NULL, bool for_select = false);
 
     LLSpatialGroup* getSpatialGroup()const          {return (LLSpatialGroup*)getGroup();}
     LLViewerRegion* getRegion()               const { return mVObjp->getRegion(); }
@@ -116,20 +116,20 @@ public:
     LLXformMatrix*      getXform() { return &mXform; }
 
     U32                 getState()           const { return mState; }
-    BOOL                isState   (U32 bits) const { return ((mState & bits) != 0); }
+    bool                isState   (U32 bits) const { return ((mState & bits) != 0); }
     void                setState  (U32 bits)       { mState |= bits; }
     void                clearState(U32 bits)       { mState &= ~bits; }
 
-    BOOL                isAvatar()  const           { return mVObjp.notNull() && mVObjp->isAvatar(); }
-    BOOL                isRoot() const              { return !mParent || mParent->isAvatar(); }
+    bool                isAvatar()  const           { return mVObjp.notNull() && mVObjp->isAvatar(); }
+    bool                isRoot() const              { return !mParent || mParent->isAvatar(); }
     LLDrawable*         getRoot();
-    BOOL                isSpatialRoot() const       { return !mParent || mParent->isAvatar(); }
-    virtual BOOL        isSpatialBridge() const     { return FALSE; }
+    bool                isSpatialRoot() const       { return !mParent || mParent->isAvatar(); }
+    virtual bool        isSpatialBridge() const     { return false; }
     virtual LLSpatialPartition* asPartition()       { return NULL; }
     LLDrawable*         getParent() const           { return mParent; }
 
     // must set parent through LLViewerObject::     ()
-    //BOOL                setParent(LLDrawable *parent);
+    //bool                setParent(LLDrawable *parent);
 
     inline LLFace*      getFace(const S32 i) const;
     inline S32          getNumFaces()        const;
@@ -151,32 +151,32 @@ public:
     void destroy();
 
     void update();
-    F32 updateXform(BOOL undamped);
+    F32 updateXform(bool undamped);
 
     virtual void makeActive();
-    /*virtual*/ void makeStatic(BOOL warning_enabled = TRUE);
+    /*virtual*/ void makeStatic(bool warning_enabled = true);
 
-    BOOL isActive() const                           { return isState(ACTIVE); }
-    BOOL isStatic() const                           { return !isActive(); }
-    BOOL isAnimating() const;
+    bool isActive() const                           { return isState(ACTIVE); }
+    bool isStatic() const                           { return !isActive(); }
+    bool isAnimating() const;
 
-    virtual BOOL updateMove();
+    virtual bool updateMove();
     virtual void movePartition();
 
     void updateTexture();
     void updateMaterial();
     virtual void updateDistance(LLCamera& camera, bool force_update);
-    BOOL updateGeometry();
+    bool updateGeometry();
     void updateFaceSize(S32 idx);
 
-    void updateSpecialHoverCursor(BOOL enabled);
+    void updateSpecialHoverCursor(bool enabled);
 
     virtual void shiftPos(const LLVector4a &shift_vector);
 
     S32 getGeneration() const                   { return mGeneration; }
 
-    BOOL getLit() const                         { return isState(UNLIT) ? FALSE : TRUE; }
-    void setLit(BOOL lit)                       { lit ? clearState(UNLIT) : setState(UNLIT); }
+    bool getLit() const                         { return !isState(UNLIT); }
+    void setLit(bool lit)                       { lit ? clearState(UNLIT) : setState(UNLIT); }
 
     bool isVisible() const;
     bool isRecentlyVisible() const;
@@ -195,7 +195,7 @@ public:
     virtual void updateBinRadius();
 
     void setRenderType(S32 type)                { mRenderType = type; }
-    BOOL isRenderType(S32 type)                 { return mRenderType == type; }
+    bool isRenderType(S32 type)                 { return mRenderType == type; }
     S32  getRenderType()                        { return mRenderType; }
 
     // Debugging methods
@@ -214,10 +214,10 @@ public:
 
 protected:
     ~LLDrawable() { destroy(); }
-    void moveUpdatePipeline(BOOL moved);
+    void moveUpdatePipeline(bool moved);
     void updatePartition();
-    BOOL updateMoveDamped();
-    BOOL updateMoveUndamped();
+    bool updateMoveDamped();
+    bool updateMoveUndamped();
 
 public:
     friend class LLPipeline;
@@ -244,11 +244,11 @@ public:
         {
             if (lhs->isVisible() && !rhs->isVisible())
             {
-                return TRUE; //visible things come first
+                return true; //visible things come first
             }
             else if (!lhs->isVisible() && rhs->isVisible())
             {
-                return FALSE; //rhs is visible, comes first
+                return false; //rhs is visible, comes first
             }
 
             return lhs->mDistanceWRTCamera < rhs->mDistanceWRTCamera; // farthest = last
diff --git a/indra/newview/lldrawpool.cpp b/indra/newview/lldrawpool.cpp
index 7532b1fc85..ba7d17cf21 100644
--- a/indra/newview/lldrawpool.cpp
+++ b/indra/newview/lldrawpool.cpp
@@ -269,20 +269,20 @@ void LLFacePool::enqueue(LLFace* facep)
 }
 
 // virtual
-BOOL LLFacePool::addFace(LLFace *facep)
+bool LLFacePool::addFace(LLFace *facep)
 {
     addFaceReference(facep);
-    return TRUE;
+    return true;
 }
 
 // virtual
-BOOL LLFacePool::removeFace(LLFace *facep)
+bool LLFacePool::removeFace(LLFace *facep)
 {
     removeFaceReference(facep);
 
     vector_replace_with_last(mDrawFace, facep);
 
-    return TRUE;
+    return true;
 }
 
 // Not absolutely sure if we should be resetting all of the chained pools as well - djs
@@ -315,7 +315,7 @@ void LLFacePool::addFaceReference(LLFace *facep)
 {
     if (-1 == facep->getReferenceIndex())
     {
-        facep->setReferenceIndex(mReferences.size());
+        facep->setReferenceIndex(static_cast<S32>(mReferences.size()));
         mReferences.push_back(facep);
     }
 }
@@ -328,9 +328,9 @@ void LLFacePool::pushFaceGeometry()
     }
 }
 
-BOOL LLFacePool::verify() const
+bool LLFacePool::verify() const
 {
-    BOOL ok = TRUE;
+    bool ok = true;
 
     for (std::vector<LLFace*>::const_iterator iter = mDrawFace.begin();
          iter != mDrawFace.end(); iter++)
@@ -340,11 +340,11 @@ BOOL LLFacePool::verify() const
         {
             LL_INFOS() << "Face in wrong pool!" << LL_ENDL;
             facep->printDebugInfo();
-            ok = FALSE;
+            ok = false;
         }
         else if (!facep->verify())
         {
-            ok = FALSE;
+            ok = false;
         }
     }
 
@@ -356,7 +356,7 @@ void LLFacePool::printDebugInfo() const
     LL_INFOS() << "Pool " << this << " Type: " << getType() << LL_ENDL;
 }
 
-BOOL LLFacePool::LLOverrideFaceColor::sOverrideFaceColor = FALSE;
+bool LLFacePool::LLOverrideFaceColor::sOverrideFaceColor = false;
 
 void LLFacePool::LLOverrideFaceColor::setColor(const LLColor4& color)
 {
@@ -674,7 +674,7 @@ bool LLRenderPass::uploadMatrixPalette(LLVOAvatar* avatar, LLMeshSkinInfo* skinI
         return false;
     }
     const LLVOAvatar::MatrixPaletteCache& mpc = avatar->updateSkinInfoMatrixPalette(skinInfo);
-    U32 count = mpc.mMatrixPalette.size();
+    U32 count = static_cast<U32>(mpc.mMatrixPalette.size());
 
     if (count == 0)
     {
@@ -684,7 +684,7 @@ bool LLRenderPass::uploadMatrixPalette(LLVOAvatar* avatar, LLMeshSkinInfo* skinI
 
     LLGLSLShader::sCurBoundShaderPtr->uniformMatrix3x4fv(LLViewerShaderMgr::AVATAR_MATRIX,
         count,
-        FALSE,
+        false,
         (GLfloat*)&(mpc.mGLMp[0]));
 
     return true;
@@ -758,9 +758,12 @@ void LLRenderPass::pushGLTFBatch(LLDrawInfo& params)
 {
     auto& mat = params.mGLTFMaterial;
 
-    mat->bind(params.mTexture);
+    if (mat.notNull())
+    {
+        mat->bind(params.mTexture);
+    }
 
-    LLGLDisable cull_face(mat->mDoubleSided ? GL_CULL_FACE : 0);
+    LLGLDisable cull_face(mat.notNull() && mat->mDoubleSided ? GL_CULL_FACE : 0);
 
     setup_texture_matrix(params);
 
diff --git a/indra/newview/lldrawpool.h b/indra/newview/lldrawpool.h
index 789d8d45c9..01a29f71a0 100644
--- a/indra/newview/lldrawpool.h
+++ b/indra/newview/lldrawpool.h
@@ -80,13 +80,13 @@ public:
     LLDrawPool(const U32 type);
     virtual ~LLDrawPool();
 
-    virtual BOOL isDead() = 0;
+    virtual bool isDead() = 0;
 
     S32 getId() const { return mId; }
     U32 getType() const { return mType; }
 
-    BOOL getSkipRenderFlag() const { return mSkipRender;}
-    void setSkipRenderFlag( BOOL flag ) { mSkipRender = flag; }
+    bool getSkipRenderFlag() const { return mSkipRender;}
+    void setSkipRenderFlag( bool flag ) { mSkipRender = flag; }
 
     virtual LLViewerTexture *getDebugTexture();
     virtual void beginRenderPass( S32 pass );
@@ -111,19 +111,19 @@ public:
     virtual void render(S32 pass = 0) {};
     virtual void prerender() {};
     virtual U32 getVertexDataMask() { return 0; } // DEPRECATED -- draw pool doesn't actually determine vertex data mask any more
-    virtual BOOL verify() const { return TRUE; }        // Verify that all data in the draw pool is correct!
+    virtual bool verify() const { return true; }        // Verify that all data in the draw pool is correct!
     virtual S32 getShaderLevel() const { return mShaderLevel; }
 
     static LLDrawPool* createPool(const U32 type, LLViewerTexture *tex0 = NULL);
     virtual LLViewerTexture* getTexture() = 0;
-    virtual BOOL isFacePool() { return FALSE; }
+    virtual bool isFacePool() { return false; }
     virtual void resetDrawOrders() = 0;
     virtual void pushFaceGeometry() {}
 
     S32 mShaderLevel;
     S32 mId;
     U32 mType;              // Type of draw pool
-    BOOL mSkipRender;
+    bool mSkipRender;
 };
 
 class LLRenderPass : public LLDrawPool
@@ -345,7 +345,7 @@ public:
     virtual ~LLRenderPass();
     /*virtual*/ LLViewerTexture* getDebugTexture() { return NULL; }
     LLViewerTexture* getTexture() { return NULL; }
-    BOOL isDead() { return FALSE; }
+    bool isDead() { return false; }
     void resetDrawOrders() { }
 
     static void applyModelMatrix(const LLDrawInfo& params);
@@ -404,16 +404,16 @@ public:
     LLFacePool(const U32 type);
     virtual ~LLFacePool();
 
-    BOOL isDead() { return mReferences.empty(); }
+    bool isDead() { return mReferences.empty(); }
 
     virtual LLViewerTexture *getTexture();
     virtual void dirtyTextures(const std::set<LLViewerFetchedTexture*>& textures);
 
     virtual void enqueue(LLFace *face);
-    virtual BOOL addFace(LLFace *face);
-    virtual BOOL removeFace(LLFace *face);
+    virtual bool addFace(LLFace *face);
+    virtual bool removeFace(LLFace *face);
 
-    virtual BOOL verify() const;        // Verify that all data in the draw pool is correct!
+    virtual bool verify() const;        // Verify that all data in the draw pool is correct!
 
     virtual void resetDrawOrders();
     void resetAll();
@@ -427,7 +427,7 @@ public:
 
     void printDebugInfo() const;
 
-    BOOL isFacePool() { return TRUE; }
+    bool isFacePool() { return true; }
 
     // call drawIndexed on every draw face
     void pushFaceGeometry();
@@ -446,24 +446,24 @@ public:
         LLOverrideFaceColor(LLDrawPool* pool)
             : mOverride(sOverrideFaceColor), mPool(pool)
         {
-            sOverrideFaceColor = TRUE;
+            sOverrideFaceColor = true;
         }
         LLOverrideFaceColor(LLDrawPool* pool, const LLColor4& color)
             : mOverride(sOverrideFaceColor), mPool(pool)
         {
-            sOverrideFaceColor = TRUE;
+            sOverrideFaceColor = true;
             setColor(color);
         }
         LLOverrideFaceColor(LLDrawPool* pool, const LLColor4U& color)
             : mOverride(sOverrideFaceColor), mPool(pool)
         {
-            sOverrideFaceColor = TRUE;
+            sOverrideFaceColor = true;
             setColor(color);
         }
         LLOverrideFaceColor(LLDrawPool* pool, F32 r, F32 g, F32 b, F32 a)
             : mOverride(sOverrideFaceColor), mPool(pool)
         {
-            sOverrideFaceColor = TRUE;
+            sOverrideFaceColor = true;
             setColor(r, g, b, a);
         }
         ~LLOverrideFaceColor()
@@ -473,9 +473,9 @@ public:
         void setColor(const LLColor4& color);
         void setColor(const LLColor4U& color);
         void setColor(F32 r, F32 g, F32 b, F32 a);
-        BOOL mOverride;
+        bool mOverride;
         LLDrawPool* mPool;
-        static BOOL sOverrideFaceColor;
+        static bool sOverrideFaceColor;
     };
 };
 
diff --git a/indra/newview/lldrawpoolalpha.cpp b/indra/newview/lldrawpoolalpha.cpp
index 60cfe9440d..34da5b29d4 100644
--- a/indra/newview/lldrawpoolalpha.cpp
+++ b/indra/newview/lldrawpoolalpha.cpp
@@ -53,7 +53,7 @@
 
 #include "llenvironment.h"
 
-BOOL LLDrawPoolAlpha::sShowDebugAlpha = FALSE;
+bool LLDrawPoolAlpha::sShowDebugAlpha = false;
 
 #define current_shader (LLGLSLShader::sCurBoundShaderPtr)
 
@@ -93,7 +93,7 @@ S32 LLDrawPoolAlpha::getNumPostDeferredPasses()
 }
 
 // set some common parameters on the given shader to prepare for alpha rendering
-static void prepare_alpha_shader(LLGLSLShader* shader, bool textureGamma, bool deferredEnvironment, F32 water_sign)
+static void prepare_alpha_shader(LLGLSLShader* shader, bool deferredEnvironment, F32 water_sign)
 {
     static LLCachedControl<F32> displayGamma(gSavedSettings, "RenderDeferredDisplayGamma");
     F32 gamma = displayGamma;
@@ -132,19 +132,15 @@ static void prepare_alpha_shader(LLGLSLShader* shader, bool textureGamma, bool d
     {
         shader->setMinimumAlpha(MINIMUM_ALPHA);
     }
-    if (textureGamma)
-    {
-        shader->uniform1f(LLShaderMgr::TEXTURE_GAMMA, 2.2f);
-    }
 
     //also prepare rigged variant
     if (shader->mRiggedVariant && shader->mRiggedVariant != shader)
     {
-        prepare_alpha_shader(shader->mRiggedVariant, textureGamma, deferredEnvironment, water_sign);
+        prepare_alpha_shader(shader->mRiggedVariant, deferredEnvironment, water_sign);
     }
 }
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 void LLDrawPoolAlpha::renderPostDeferred(S32 pass)
 {
@@ -171,36 +167,36 @@ void LLDrawPoolAlpha::renderPostDeferred(S32 pass)
     llassert(LLPipeline::sRenderDeferred);
 
     emissive_shader = &gDeferredEmissiveProgram;
-    prepare_alpha_shader(emissive_shader, true, false, water_sign);
+    prepare_alpha_shader(emissive_shader, false, water_sign);
 
     pbr_emissive_shader = &gPBRGlowProgram;
-    prepare_alpha_shader(pbr_emissive_shader, true, false, water_sign);
+    prepare_alpha_shader(pbr_emissive_shader, false, water_sign);
 
 
     fullbright_shader   =
         (LLPipeline::sImpostorRender) ? &gDeferredFullbrightAlphaMaskProgram :
         (LLPipeline::sRenderingHUDs) ? &gHUDFullbrightAlphaMaskAlphaProgram :
         &gDeferredFullbrightAlphaMaskAlphaProgram;
-    prepare_alpha_shader(fullbright_shader, true, true, water_sign);
+    prepare_alpha_shader(fullbright_shader, true, water_sign);
 
     simple_shader   =
         (LLPipeline::sImpostorRender) ? &gDeferredAlphaImpostorProgram :
         (LLPipeline::sRenderingHUDs) ? &gHUDAlphaProgram :
         &gDeferredAlphaProgram;
 
-    prepare_alpha_shader(simple_shader, false, true, water_sign); //prime simple shader (loads shadow relevant uniforms)
+    prepare_alpha_shader(simple_shader, true, water_sign); //prime simple shader (loads shadow relevant uniforms)
 
     LLGLSLShader* materialShader = gDeferredMaterialProgram;
     for (int i = 0; i < LLMaterial::SHADER_COUNT*2; ++i)
     {
-        prepare_alpha_shader(&materialShader[i], false, true, water_sign);
+        prepare_alpha_shader(&materialShader[i], true, water_sign);
     }
 
     pbr_shader =
         (LLPipeline::sRenderingHUDs) ? &gHUDPBRAlphaProgram :
         &gDeferredPBRAlphaProgram;
 
-    prepare_alpha_shader(pbr_shader, false, true, water_sign);
+    prepare_alpha_shader(pbr_shader, true, water_sign);
 
     // explicitly unbind here so render loop doesn't make assumptions about the last shader
     // already being setup for rendering
@@ -261,13 +257,12 @@ void LLDrawPoolAlpha::forwardRender(bool rigged)
     mAlphaDFactor = LLRender::BF_ONE_MINUS_SOURCE_ALPHA;       // }
     gGL.blendFunc(mColorSFactor, mColorDFactor, mAlphaSFactor, mAlphaDFactor);
 
-    if (rigged)
+    if (rigged && mType == LLDrawPool::POOL_ALPHA_POST_WATER)
     { // draw GLTF scene to depth buffer before rigged alpha
-        gPipeline.bindDeferredShader(gDeferredPBRAlphaProgram);
         LL::GLTFSceneManager::instance().render(false, false);
-
-        gPipeline.bindDeferredShader(*gDeferredPBRAlphaProgram.mRiggedVariant);
         LL::GLTFSceneManager::instance().render(false, true);
+        LL::GLTFSceneManager::instance().render(false, false, true);
+        LL::GLTFSceneManager::instance().render(false, true, true);
     }
 
     // If the face is more than 90% transparent, then don't update the Depth buffer for Dof
@@ -587,8 +582,8 @@ void LLDrawPoolAlpha::renderRiggedPbrEmissives(std::vector<LLDrawInfo*>& emissiv
 void LLDrawPoolAlpha::renderAlpha(U32 mask, bool depth_only, bool rigged)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWPOOL;
-    BOOL initialized_lighting = FALSE;
-    BOOL light_enabled = TRUE;
+    bool initialized_lighting = false;
+    bool light_enabled = true;
 
     LLVOAvatar* lastAvatar = nullptr;
     U64 lastMeshId = 0;
@@ -710,18 +705,18 @@ void LLDrawPoolAlpha::renderAlpha(U32 mask, bool depth_only, bool rigged)
                         // Turn off lighting if it hasn't already been so.
                         if (light_enabled || !initialized_lighting)
                         {
-                            initialized_lighting = TRUE;
+                            initialized_lighting = true;
                             target_shader = fullbright_shader;
 
-                            light_enabled = FALSE;
+                            light_enabled = false;
                         }
                     }
                     // Turn on lighting if it isn't already.
                     else if (!light_enabled || !initialized_lighting)
                     {
-                        initialized_lighting = TRUE;
+                        initialized_lighting = true;
                         target_shader = simple_shader;
-                        light_enabled = TRUE;
+                        light_enabled = true;
                     }
 
                     if (LLPipeline::sRenderingHUDs)
@@ -929,7 +924,7 @@ bool LLDrawPoolAlpha::uploadMatrixPalette(const LLDrawInfo& params)
         return false;
     }
     const LLVOAvatar::MatrixPaletteCache& mpc = params.mAvatar.get()->updateSkinInfoMatrixPalette(params.mSkinInfo);
-    U32 count = mpc.mMatrixPalette.size();
+    U32 count = static_cast<U32>(mpc.mMatrixPalette.size());
 
     if (count == 0)
     {
@@ -939,7 +934,7 @@ bool LLDrawPoolAlpha::uploadMatrixPalette(const LLDrawInfo& params)
 
     LLGLSLShader::sCurBoundShaderPtr->uniformMatrix3x4fv(LLViewerShaderMgr::AVATAR_MATRIX,
         count,
-        FALSE,
+        false,
         (GLfloat*)&(mpc.mGLMp[0]));
 
     return true;
diff --git a/indra/newview/lldrawpoolalpha.h b/indra/newview/lldrawpoolalpha.h
index a968149a22..0abe001714 100644
--- a/indra/newview/lldrawpoolalpha.h
+++ b/indra/newview/lldrawpoolalpha.h
@@ -63,12 +63,12 @@ public:
 
     void renderDebugAlpha();
 
-    void renderGroupAlpha(LLSpatialGroup* group, U32 type, U32 mask, BOOL texture = TRUE);
+    void renderGroupAlpha(LLSpatialGroup* group, U32 type, U32 mask, bool texture = true);
     void renderAlpha(U32 mask, bool depth_only = false, bool rigged = false);
     void renderAlphaHighlight();
     bool uploadMatrixPalette(const LLDrawInfo& params);
 
-    static BOOL sShowDebugAlpha;
+    static bool sShowDebugAlpha;
 
 private:
     LLGLSLShader* target_shader;
diff --git a/indra/newview/lldrawpoolavatar.cpp b/indra/newview/lldrawpoolavatar.cpp
index 9581ee2e60..9afc705d3e 100644
--- a/indra/newview/lldrawpoolavatar.cpp
+++ b/indra/newview/lldrawpoolavatar.cpp
@@ -56,8 +56,8 @@
 static U32 sShaderLevel = 0;
 
 LLGLSLShader* LLDrawPoolAvatar::sVertexProgram = NULL;
-BOOL    LLDrawPoolAvatar::sSkipOpaque = FALSE;
-BOOL    LLDrawPoolAvatar::sSkipTransparent = FALSE;
+bool    LLDrawPoolAvatar::sSkipOpaque = false;
+bool    LLDrawPoolAvatar::sSkipTransparent = false;
 S32     LLDrawPoolAvatar::sShadowPass = -1;
 S32 LLDrawPoolAvatar::sDiffuseChannel = 0;
 F32 LLDrawPoolAvatar::sMinimumAlpha = 0.2f;
@@ -67,7 +67,7 @@ LLUUID gBlackSquareID;
 static bool is_deferred_render = false;
 static bool is_post_deferred_render = false;
 
-extern BOOL gUseGLPick;
+extern bool gUseGLPick;
 
 F32 CLOTHING_GRAVITY_EFFECT = 0.7f;
 F32 CLOTHING_ACCEL_FORCE_FACTOR = 0.2f;
@@ -95,8 +95,8 @@ S32 AVATAR_OFFSET_TEX0 = 32;
 S32 AVATAR_OFFSET_TEX1 = 40;
 S32 AVATAR_VERTEX_BYTES = 48;
 
-BOOL gAvatarEmbossBumpMap = FALSE;
-static BOOL sRenderingSkinned = FALSE;
+bool gAvatarEmbossBumpMap = false;
+static bool sRenderingSkinned = false;
 S32 normal_channel = -1;
 S32 specular_channel = -1;
 S32 cube_channel = -1;
@@ -115,16 +115,16 @@ LLDrawPoolAvatar::~LLDrawPoolAvatar()
 }
 
 // virtual
-BOOL LLDrawPoolAvatar::isDead()
+bool LLDrawPoolAvatar::isDead()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR
 
     if (!LLFacePool::isDead())
     {
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 S32 LLDrawPoolAvatar::getShaderLevel() const
@@ -167,7 +167,7 @@ void LLDrawPoolAvatar::beginDeferredPass(S32 pass)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
 
-    sSkipTransparent = TRUE;
+    sSkipTransparent = true;
     is_deferred_render = true;
 
     if (LLPipeline::sImpostorRender)
@@ -193,7 +193,7 @@ void LLDrawPoolAvatar::endDeferredPass(S32 pass)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
 
-    sSkipTransparent = FALSE;
+    sSkipTransparent = false;
     is_deferred_render = false;
 
     if (LLPipeline::sImpostorRender)
@@ -231,10 +231,10 @@ void LLDrawPoolAvatar::beginPostDeferredPass(S32 pass)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR
 
-    sSkipOpaque = TRUE;
+    sSkipOpaque = true;
     sShaderLevel = mShaderLevel;
     sVertexProgram = &gDeferredAvatarAlphaProgram;
-    sRenderingSkinned = TRUE;
+    sRenderingSkinned = true;
 
     gPipeline.bindDeferredShader(*sVertexProgram);
 
@@ -247,8 +247,8 @@ void LLDrawPoolAvatar::endPostDeferredPass(S32 pass)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR
     // if we're in software-blending, remember to set the fence _after_ we draw so we wait till this rendering is done
-    sRenderingSkinned = FALSE;
-    sSkipOpaque = FALSE;
+    sRenderingSkinned = false;
+    sSkipOpaque = false;
 
     gPipeline.unbindDeferredShader(*sVertexProgram);
     sDiffuseChannel = 0;
@@ -288,7 +288,7 @@ void LLDrawPoolAvatar::beginShadowPass(S32 pass)
 
         if ((sShaderLevel > 0))  // for hardware blending
         {
-            sRenderingSkinned = TRUE;
+            sRenderingSkinned = true;
             sVertexProgram->bind();
         }
 
@@ -308,7 +308,7 @@ void LLDrawPoolAvatar::beginShadowPass(S32 pass)
 
         if ((sShaderLevel > 0))  // for hardware blending
         {
-            sRenderingSkinned = TRUE;
+            sRenderingSkinned = true;
             sVertexProgram->bind();
         }
 
@@ -328,7 +328,7 @@ void LLDrawPoolAvatar::beginShadowPass(S32 pass)
 
         if ((sShaderLevel > 0))  // for hardware blending
         {
-            sRenderingSkinned = TRUE;
+            sRenderingSkinned = true;
             sVertexProgram->bind();
         }
 
@@ -345,7 +345,7 @@ void LLDrawPoolAvatar::endShadowPass(S32 pass)
         sVertexProgram->unbind();
     }
     sVertexProgram = NULL;
-    sRenderingSkinned = FALSE;
+    sRenderingSkinned = false;
     LLDrawPoolAvatar::sShadowPass = -1;
 }
 
@@ -370,8 +370,17 @@ void LLDrawPoolAvatar::renderShadow(S32 pass)
         return;
     }
 
+    static LLCachedControl<bool> friends_only(gSavedSettings, "RenderAvatarFriendsOnly", false);
+    if (friends_only()
+        && !avatarp->isControlAvatar()
+        && !avatarp->isSelf()
+        && !avatarp->isBuddy())
+    {
+        return;
+    }
+
     LLVOAvatar::AvatarOverallAppearance oa = avatarp->getOverallAppearance();
-    BOOL impostor = !LLPipeline::sImpostorRender && avatarp->isImpostor();
+    bool impostor = !LLPipeline::sImpostorRender && avatarp->isImpostor();
     // no shadows if the shadows are causing this avatar to breach the limit.
     if (avatarp->isTooSlow() || impostor || (oa == LLVOAvatar::AOA_INVISIBLE))
     {
@@ -546,7 +555,7 @@ void LLDrawPoolAvatar::beginDeferredImpostor()
 
     sVertexProgram = &gDeferredImpostorProgram;
     specular_channel = sVertexProgram->enableTexture(LLViewerShaderMgr::SPECULAR_MAP);
-    normal_channel = sVertexProgram->enableTexture(LLViewerShaderMgr::DEFERRED_NORMAL);
+    normal_channel = sVertexProgram->enableTexture(LLViewerShaderMgr::NORMAL_MAP);
     sDiffuseChannel = sVertexProgram->enableTexture(LLViewerShaderMgr::DIFFUSE_MAP);
     sVertexProgram->bind();
     sVertexProgram->setMinimumAlpha(0.01f);
@@ -557,7 +566,7 @@ void LLDrawPoolAvatar::endDeferredImpostor()
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR
 
     sShaderLevel = mShaderLevel;
-    sVertexProgram->disableTexture(LLViewerShaderMgr::DEFERRED_NORMAL);
+    sVertexProgram->disableTexture(LLViewerShaderMgr::NORMAL_MAP);
     sVertexProgram->disableTexture(LLViewerShaderMgr::SPECULAR_MAP);
     sVertexProgram->disableTexture(LLViewerShaderMgr::DIFFUSE_MAP);
     gPipeline.unbindDeferredShader(*sVertexProgram);
@@ -594,7 +603,7 @@ void LLDrawPoolAvatar::beginSkinned()
 
     sVertexProgram = &gAvatarProgram;
 
-    sRenderingSkinned = TRUE;
+    sRenderingSkinned = true;
 
     sVertexProgram->bind();
     sVertexProgram->setMinimumAlpha(LLDrawPoolAvatar::sMinimumAlpha);
@@ -607,7 +616,7 @@ void LLDrawPoolAvatar::endSkinned()
     // if we're in software-blending, remember to set the fence _after_ we draw so we wait till this rendering is done
     if (sShaderLevel > 0)
     {
-        sRenderingSkinned = FALSE;
+        sRenderingSkinned = false;
         sVertexProgram->disableTexture(LLViewerShaderMgr::BUMP_MAP);
         gGL.getTexUnit(0)->activate();
         sVertexProgram->unbind();
@@ -632,7 +641,7 @@ void LLDrawPoolAvatar::beginDeferredSkinned()
 
     sShaderLevel = mShaderLevel;
     sVertexProgram = &gDeferredAvatarProgram;
-    sRenderingSkinned = TRUE;
+    sRenderingSkinned = true;
 
     sVertexProgram->bind();
     sVertexProgram->setMinimumAlpha(LLDrawPoolAvatar::sMinimumAlpha);
@@ -645,7 +654,7 @@ void LLDrawPoolAvatar::endDeferredSkinned()
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR
 
     // if we're in software-blending, remember to set the fence _after_ we draw so we wait till this rendering is done
-    sRenderingSkinned = FALSE;
+    sRenderingSkinned = false;
     sVertexProgram->unbind();
 
     sVertexProgram->disableTexture(LLViewerShaderMgr::DIFFUSE_MAP);
@@ -723,7 +732,18 @@ void LLDrawPoolAvatar::renderAvatars(LLVOAvatar* single_avatar, S32 pass)
         return;
     }
 
-    BOOL impostor = !LLPipeline::sImpostorRender && avatarp->isImpostor() && !single_avatar;
+    static LLCachedControl<bool> friends_only(gSavedSettings, "RenderAvatarFriendsOnly", false);
+    if (!single_avatar
+        && friends_only()
+        && !avatarp->isUIAvatar()
+        && !avatarp->isControlAvatar()
+        && !avatarp->isSelf()
+        && !avatarp->isBuddy())
+    {
+        return;
+    }
+
+    bool impostor = !LLPipeline::sImpostorRender && avatarp->isImpostor() && !single_avatar;
 
     if (( avatarp->isInMuteList()
           || impostor
diff --git a/indra/newview/lldrawpoolavatar.h b/indra/newview/lldrawpoolavatar.h
index 3160b9e706..1a53861a03 100644
--- a/indra/newview/lldrawpoolavatar.h
+++ b/indra/newview/lldrawpoolavatar.h
@@ -60,7 +60,7 @@ public:
     };
 
     ~LLDrawPoolAvatar();
-    /*virtual*/ BOOL isDead();
+    /*virtual*/ bool isDead();
 
 typedef enum
     {
@@ -120,8 +120,8 @@ typedef enum
 
     void renderAvatars(LLVOAvatar *single_avatar, S32 pass = -1); // renders only one avatar if single_avatar is not null.
 
-    static BOOL sSkipOpaque;
-    static BOOL sSkipTransparent;
+    static bool sSkipOpaque;
+    static bool sSkipTransparent;
     static S32  sShadowPass;
     static S32 sDiffuseChannel;
     static F32 sMinimumAlpha;
@@ -136,5 +136,5 @@ extern S32 AVATAR_OFFSET_TEX1;
 extern S32 AVATAR_VERTEX_BYTES;
 const S32 AVATAR_BUFFER_ELEMENTS = 8192; // Needs to be enough to store all avatar vertices.
 
-extern BOOL gAvatarEmbossBumpMap;
+extern bool gAvatarEmbossBumpMap;
 #endif // LL_LLDRAWPOOLAVATAR_H
diff --git a/indra/newview/lldrawpoolbump.cpp b/indra/newview/lldrawpoolbump.cpp
index 9b71d09db3..4ca8a184e8 100644
--- a/indra/newview/lldrawpoolbump.cpp
+++ b/indra/newview/lldrawpoolbump.cpp
@@ -77,7 +77,7 @@ static LLGLSLShader* shader = NULL;
 static S32 cube_channel = -1;
 static S32 diffuse_channel = -1;
 static S32 bump_channel = -1;
-static BOOL shiny = FALSE;
+static bool shiny = false;
 
 // Enabled after changing LLViewerTexture::mNeedsCreateTexture to an
 // LLAtomicBool; this should work just fine, now. HB
@@ -165,7 +165,7 @@ void LLStandardBumpmap::addstandard()
         gStandardBumpmapList[LLStandardBumpmap::sStandardBumpmapCount].mImage =
             LLViewerTextureManager::getFetchedTexture(LLUUID(bump_image_id));
         gStandardBumpmapList[LLStandardBumpmap::sStandardBumpmapCount].mImage->setBoostLevel(LLGLTexture::LOCAL) ;
-        gStandardBumpmapList[LLStandardBumpmap::sStandardBumpmapCount].mImage->setLoadedCallback(LLBumpImageList::onSourceStandardLoaded, 0, TRUE, FALSE, NULL, NULL );
+        gStandardBumpmapList[LLStandardBumpmap::sStandardBumpmapCount].mImage->setLoadedCallback(LLBumpImageList::onSourceStandardLoaded, 0, true, false, NULL, NULL );
         gStandardBumpmapList[LLStandardBumpmap::sStandardBumpmapCount].mImage->forceToSaveRawImage(0, 30.f) ;
         LLStandardBumpmap::sStandardBumpmapCount++;
     }
@@ -198,7 +198,7 @@ void LLStandardBumpmap::destroyGL()
 LLDrawPoolBump::LLDrawPoolBump()
 :  LLRenderPass(LLDrawPool::POOL_BUMP)
 {
-    shiny = FALSE;
+    shiny = false;
 }
 
 
@@ -354,7 +354,7 @@ void LLDrawPoolBump::beginFullbrightShiny()
         diffuse_channel = 0;
     }
 
-    shiny = TRUE;
+    shiny = true;
 }
 
 void LLDrawPoolBump::renderFullbrightShiny()
@@ -406,7 +406,7 @@ void LLDrawPoolBump::endFullbrightShiny()
 
     diffuse_channel = -1;
     cube_channel = 0;
-    shiny = FALSE;
+    shiny = false;
 }
 
 void LLDrawPoolBump::renderGroup(LLSpatialGroup* group, U32 type, bool texture = true)
@@ -426,7 +426,7 @@ void LLDrawPoolBump::renderGroup(LLSpatialGroup* group, U32 type, bool texture =
 
 
 // static
-BOOL LLDrawPoolBump::bindBumpMap(LLDrawInfo& params, S32 channel)
+bool LLDrawPoolBump::bindBumpMap(LLDrawInfo& params, S32 channel)
 {
     U8 bump_code = params.mBump;
 
@@ -434,7 +434,7 @@ BOOL LLDrawPoolBump::bindBumpMap(LLDrawInfo& params, S32 channel)
 }
 
 //static
-BOOL LLDrawPoolBump::bindBumpMap(LLFace* face, S32 channel)
+bool LLDrawPoolBump::bindBumpMap(LLFace* face, S32 channel)
 {
     const LLTextureEntry* te = face->getTextureEntry();
     if (te)
@@ -443,11 +443,11 @@ BOOL LLDrawPoolBump::bindBumpMap(LLFace* face, S32 channel)
         return bindBumpMap(bump_code, face->getTexture(), channel);
     }
 
-    return FALSE;
+    return false;
 }
 
 //static
-BOOL LLDrawPoolBump::bindBumpMap(U8 bump_code, LLViewerTexture* texture, S32 channel)
+bool LLDrawPoolBump::bindBumpMap(U8 bump_code, LLViewerTexture* texture, S32 channel)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWPOOL;
     //Note: texture atlas does not support bump texture now.
@@ -455,7 +455,7 @@ BOOL LLDrawPoolBump::bindBumpMap(U8 bump_code, LLViewerTexture* texture, S32 cha
     if(!tex)
     {
         //if the texture is not a fetched texture
-        return FALSE;
+        return false;
     }
 
     LLViewerTexture* bump = NULL;
@@ -491,10 +491,10 @@ BOOL LLDrawPoolBump::bindBumpMap(U8 bump_code, LLViewerTexture* texture, S32 cha
             gGL.getTexUnit(channel)->bind(bump);
         }
 
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 //static
@@ -549,7 +549,7 @@ void LLDrawPoolBump::renderDeferred(S32 pass)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWPOOL; //LL_RECORD_BLOCK_TIME(FTM_RENDER_BUMP);
 
-    shiny = TRUE;
+    shiny = true;
     for (int i = 0; i < 2; ++i)
     {
         bool rigged = i == 1;
@@ -597,7 +597,7 @@ void LLDrawPoolBump::renderDeferred(S32 pass)
         gGL.getTexUnit(0)->activate();
     }
 
-    shiny = FALSE;
+    shiny = false;
 }
 
 
@@ -699,17 +699,19 @@ void LLBumpImageList::addTextureStats(U8 bump, const LLUUID& base_image_id, F32
 
 void LLBumpImageList::updateImages()
 {
+    llassert(LLCoros::on_main_thread_main_coro()); // This code is not thread safe
+
     for (bump_image_map_t::iterator iter = mBrightnessEntries.begin(); iter != mBrightnessEntries.end(); )
     {
         LLViewerTexture* image = iter->second;
         if( image )
         {
-            BOOL destroy = TRUE;
+            bool destroy = true;
             if( image->hasGLTexture())
             {
                 if( image->getBoundRecently() )
                 {
-                    destroy = FALSE;
+                    destroy = false;
                 }
                 else
                 {
@@ -733,12 +735,12 @@ void LLBumpImageList::updateImages()
         LLViewerTexture* image = curiter->second;
         if( image )
         {
-            BOOL destroy = TRUE;
+            bool destroy = true;
             if( image->hasGLTexture())
             {
                 if( image->getBoundRecently() )
                 {
-                    destroy = FALSE;
+                    destroy = false;
                 }
                 else
                 {
@@ -765,7 +767,7 @@ LLViewerTexture* LLBumpImageList::getBrightnessDarknessImage(LLViewerFetchedText
     LLViewerTexture* bump = NULL;
 
     bump_image_map_t* entries_list = NULL;
-    void (*callback_func)( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata ) = NULL;
+    void (*callback_func)( bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata ) = NULL;
 
     switch( bump_code )
     {
@@ -789,7 +791,7 @@ LLViewerTexture* LLBumpImageList::getBrightnessDarknessImage(LLViewerFetchedText
     }
     else
     {
-        (*entries_list)[src_image->getID()] = LLViewerTextureManager::getLocalTexture( TRUE );
+        (*entries_list)[src_image->getID()] = LLViewerTextureManager::getLocalTexture( true );
         bump = (*entries_list)[src_image->getID()]; // In case callback was called immediately and replaced the image
     }
 
@@ -800,7 +802,7 @@ LLViewerTexture* LLBumpImageList::getBrightnessDarknessImage(LLViewerFetchedText
             //(LLPipeline::sRenderDeferred && bump->getComponents() != 4))
         {
             src_image->setBoostLevel(LLGLTexture::BOOST_BUMP) ;
-            src_image->setLoadedCallback( callback_func, 0, TRUE, FALSE, new LLUUID(src_image->getID()), NULL );
+            src_image->setLoadedCallback( callback_func, 0, true, false, new LLUUID(src_image->getID()), NULL );
             src_image->forceToSaveRawImage(0) ;
         }
     }
@@ -810,7 +812,7 @@ LLViewerTexture* LLBumpImageList::getBrightnessDarknessImage(LLViewerFetchedText
 
 
 // static
-void LLBumpImageList::onSourceBrightnessLoaded( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata )
+void LLBumpImageList::onSourceBrightnessLoaded( bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata )
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWPOOL;
     LLUUID* source_asset_id = (LLUUID*)userdata;
@@ -822,7 +824,7 @@ void LLBumpImageList::onSourceBrightnessLoaded( BOOL success, LLViewerFetchedTex
 }
 
 // static
-void LLBumpImageList::onSourceDarknessLoaded( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata )
+void LLBumpImageList::onSourceDarknessLoaded( bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata )
 {
     LLUUID* source_asset_id = (LLUUID*)userdata;
     LLBumpImageList::onSourceLoaded( success, src_vi, src, *source_asset_id, BE_DARKNESS );
@@ -832,7 +834,7 @@ void LLBumpImageList::onSourceDarknessLoaded( BOOL success, LLViewerFetchedTextu
     }
 }
 
-void LLBumpImageList::onSourceStandardLoaded( BOOL success, LLViewerFetchedTexture* src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata)
+void LLBumpImageList::onSourceStandardLoaded( bool success, LLViewerFetchedTexture* src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata)
 {
     if (success && LLPipeline::sRenderDeferred)
     {
@@ -850,11 +852,14 @@ void LLBumpImageList::onSourceStandardLoaded( BOOL success, LLViewerFetchedTextu
 
 void LLBumpImageList::generateNormalMapFromAlpha(LLImageRaw* src, LLImageRaw* nrm_image)
 {
+    LLImageDataSharedLock lockIn(src);
+    LLImageDataLock lockOut(nrm_image);
+
     U8* nrm_data = nrm_image->getData();
     S32 resX = src->getWidth();
     S32 resY = src->getHeight();
 
-    U8* src_data = src->getData();
+    const U8* src_data = src->getData();
 
     S32 src_cmp = src->getComponents();
 
@@ -904,7 +909,7 @@ void LLBumpImageList::generateNormalMapFromAlpha(LLImageRaw* src, LLImageRaw* nr
 }
 
 // static
-void LLBumpImageList::onSourceLoaded( BOOL success, LLViewerTexture *src_vi, LLImageRaw* src, LLUUID& source_asset_id, EBumpEffect bump_code )
+void LLBumpImageList::onSourceLoaded( bool success, LLViewerTexture *src_vi, LLImageRaw* src, LLUUID& source_asset_id, EBumpEffect bump_code )
 {
     LL_PROFILE_ZONE_SCOPED;
 
@@ -912,6 +917,7 @@ void LLBumpImageList::onSourceLoaded( BOOL success, LLViewerTexture *src_vi, LLI
     {
         LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWPOOL;
 
+        LLImageDataSharedLock lock(src);
 
         bump_image_map_t& entries_list(bump_code == BE_BRIGHTNESS ? gBumpImageList.mBrightnessEntries : gBumpImageList.mDarknessEntries );
         bump_image_map_t::iterator iter = entries_list.find(source_asset_id);
@@ -922,7 +928,7 @@ void LLBumpImageList::onSourceLoaded( BOOL success, LLViewerTexture *src_vi, LLI
                             iter->second->getWidth() != src->getWidth() ||
                             iter->second->getHeight() != src->getHeight()) // bump not cached yet or has changed resolution
             { //make sure an entry exists for this image
-                entries_list[src_vi->getID()] = LLViewerTextureManager::getLocalTexture(TRUE);
+                entries_list[src_vi->getID()] = LLViewerTextureManager::getLocalTexture(true);
                 iter = entries_list.find(src_vi->getID());
             }
         }
@@ -934,7 +940,7 @@ void LLBumpImageList::onSourceLoaded( BOOL success, LLViewerTexture *src_vi, LLI
             U8* dst_data = dst_image->getData();
             S32 dst_data_size = dst_image->getDataSize();
 
-            U8* src_data = src->getData();
+            const U8* src_data = src->getData();
             S32 src_data_size = src->getDataSize();
 
             S32 src_components = src->getComponents();
@@ -1091,7 +1097,7 @@ void LLBumpImageList::onSourceLoaded( BOOL success, LLViewerTexture *src_vi, LLI
                 bump_ptr->ref();
                 auto create_func = [=]()
                 {
-                    img->setUseMipMaps(TRUE);
+                    img->setUseMipMaps(true);
                     // upload dst_image to GPU (greyscale in red channel)
                     img->setExplicitFormat(GL_RED, GL_RED);
 
@@ -1105,7 +1111,7 @@ void LLBumpImageList::onSourceLoaded( BOOL success, LLViewerTexture *src_vi, LLI
                     //  Note: bump will still point at GPU copy of dst_image
                     bump_ptr->setExplicitFormat(GL_RGBA, GL_RGBA);
                     LLGLuint tex_name;
-                    img->createGLTexture(0, nullptr, 0, 0, true, &tex_name);
+                    img->createGLTexture(0, nullptr, false, 0, true, &tex_name);
 
                     // point render target at empty buffer
                     sRenderTarget.setColorAttachment(img, tex_name);
@@ -1117,7 +1123,7 @@ void LLBumpImageList::onSourceLoaded( BOOL success, LLViewerTexture *src_vi, LLI
                         LLGLDepthTest depth(GL_FALSE);
                         LLGLDisable cull(GL_CULL_FACE);
                         LLGLDisable blend(GL_BLEND);
-                        gGL.setColorMask(TRUE, TRUE);
+                        gGL.setColorMask(true, true);
 
                         gNormalMapGenProgram.bind();
 
diff --git a/indra/newview/lldrawpoolbump.h b/indra/newview/lldrawpoolbump.h
index a1ed555996..65cb9af015 100644
--- a/indra/newview/lldrawpoolbump.h
+++ b/indra/newview/lldrawpoolbump.h
@@ -43,10 +43,10 @@ class LLViewerFetchedTexture;
 class LLDrawPoolBump : public LLRenderPass
 {
 protected :
-    LLDrawPoolBump(const U32 type):LLRenderPass(type) { mShiny = FALSE; }
+    LLDrawPoolBump(const U32 type):LLRenderPass(type) { mShiny = false; }
 public:
     static U32 sVertexMask;
-    BOOL mShiny;
+    bool mShiny;
 
     virtual U32 getVertexDataMask() override { return sVertexMask; }
 
@@ -76,11 +76,11 @@ public:
     virtual S32 getNumPostDeferredPasses() override { return 1; }
     /*virtual*/ void renderPostDeferred(S32 pass) override;
 
-    static BOOL bindBumpMap(LLDrawInfo& params, S32 channel = -2);
-    static BOOL bindBumpMap(LLFace* face, S32 channel = -2);
+    static bool bindBumpMap(LLDrawInfo& params, S32 channel = -2);
+    static bool bindBumpMap(LLFace* face, S32 channel = -2);
 
 private:
-    static BOOL bindBumpMap(U8 bump_code, LLViewerTexture* tex, S32 channel);
+    static bool bindBumpMap(U8 bump_code, LLViewerTexture* tex, S32 channel);
     bool mRigged = false; // if true, doing a rigged pass
 
 };
@@ -140,14 +140,14 @@ public:
     LLViewerTexture*    getBrightnessDarknessImage(LLViewerFetchedTexture* src_image, U8 bump_code);
     void        addTextureStats(U8 bump, const LLUUID& base_image_id, F32 virtual_size);
 
-    static void onSourceBrightnessLoaded( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata );
-    static void onSourceDarknessLoaded( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata );
-    static void onSourceStandardLoaded( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata );
+    static void onSourceBrightnessLoaded( bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata );
+    static void onSourceDarknessLoaded( bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata );
+    static void onSourceStandardLoaded( bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata );
     static void generateNormalMapFromAlpha(LLImageRaw* src, LLImageRaw* nrm_image);
 
 
 private:
-    static void onSourceLoaded( BOOL success, LLViewerTexture *src_vi, LLImageRaw* src, LLUUID& source_asset_id, EBumpEffect bump );
+    static void onSourceLoaded( bool success, LLViewerTexture *src_vi, LLImageRaw* src, LLUUID& source_asset_id, EBumpEffect bump );
 
 private:
     typedef std::unordered_map<LLUUID, LLPointer<LLViewerTexture> > bump_image_map_t;
diff --git a/indra/newview/lldrawpoolmaterials.cpp b/indra/newview/lldrawpoolmaterials.cpp
index a098230d91..bbc93c2af9 100644
--- a/indra/newview/lldrawpoolmaterials.cpp
+++ b/indra/newview/lldrawpoolmaterials.cpp
@@ -250,7 +250,7 @@ void LLDrawPoolMaterials::renderDeferred(S32 pass)
             if (params.mAvatar != lastAvatar)
             {
                 const LLVOAvatar::MatrixPaletteCache& mpc = params.mAvatar->updateSkinInfoMatrixPalette(params.mSkinInfo);
-                U32 count = mpc.mMatrixPalette.size();
+                U32 count = static_cast<U32>(mpc.mMatrixPalette.size());
 
                 if (count == 0)
                 {
@@ -260,7 +260,7 @@ void LLDrawPoolMaterials::renderDeferred(S32 pass)
 
                 mShader->uniformMatrix3x4fv(LLViewerShaderMgr::AVATAR_MATRIX,
                     count,
-                    FALSE,
+                    false,
                     (GLfloat*)&(mpc.mGLMp[0]));
             }
         }
diff --git a/indra/newview/lldrawpoolpbropaque.cpp b/indra/newview/lldrawpoolpbropaque.cpp
index a32b6b1687..4ea23412e6 100644
--- a/indra/newview/lldrawpoolpbropaque.cpp
+++ b/indra/newview/lldrawpoolpbropaque.cpp
@@ -1,25 +1,25 @@
-/** 
+/**
  * @file lldrawpoolpbropaque.cpp
  * @brief LLDrawPoolGLTFPBR class implementation
  *
  * $LicenseInfo:firstyear=2022&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2022, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -54,12 +54,14 @@ void LLDrawPoolGLTFPBR::renderDeferred(S32 pass)
 {
     llassert(!LLPipeline::sRenderingHUDs);
 
-    gDeferredPBROpaqueProgram.bind();
+    if (mRenderType == LLPipeline::RENDER_TYPE_PASS_GLTF_PBR_ALPHA_MASK)
+    {
+        LL::GLTFSceneManager::instance().renderOpaque();
+    }
 
-    LL::GLTFSceneManager::instance().renderOpaque();
+    gDeferredPBROpaqueProgram.bind();
     pushGLTFBatches(mRenderType);
 
-
     gDeferredPBROpaqueProgram.bind(true);
     LL::GLTFSceneManager::instance().render(true, true);
     pushRiggedGLTFBatches(mRenderType + 1);
diff --git a/indra/newview/lldrawpoolsimple.cpp b/indra/newview/lldrawpoolsimple.cpp
index 2b0ae260dc..836a90adab 100644
--- a/indra/newview/lldrawpoolsimple.cpp
+++ b/indra/newview/lldrawpoolsimple.cpp
@@ -36,43 +36,12 @@
 #include "llspatialpartition.h"
 #include "llviewershadermgr.h"
 #include "llrender.h"
+#include "gltfscenemanager.h"
 
 static LLTrace::BlockTimerStatHandle FTM_RENDER_SIMPLE_DEFERRED("Deferred Simple");
 static LLTrace::BlockTimerStatHandle FTM_RENDER_GRASS_DEFERRED("Deferred Grass");
 
 
-static void setup_simple_shader(LLGLSLShader* shader)
-{
-    shader->bind();
-}
-
-static void setup_glow_shader(LLGLSLShader* shader)
-{
-    setup_simple_shader(shader);
-    if (LLPipeline::sRenderDeferred && !LLPipeline::sRenderingHUDs)
-    {
-        shader->uniform1f(LLShaderMgr::TEXTURE_GAMMA, 2.2f);
-    }
-    else
-    {
-        shader->uniform1f(LLShaderMgr::TEXTURE_GAMMA, 1.f);
-    }
-}
-
-static void setup_fullbright_shader(LLGLSLShader* shader)
-{
-    setup_glow_shader(shader);
-
-    S32 channel = shader->enableTexture(LLShaderMgr::EXPOSURE_MAP);
-    if (channel > -1)
-    {
-        gGL.getTexUnit(channel)->bind(&gPipeline.mExposureMap);
-    }
-
-    shader->uniform1f(LLViewerShaderMgr::FULLBRIGHT, 1.f);
-}
-
-
 void LLDrawPoolGlow::renderPostDeferred(S32 pass)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWPOOL;
@@ -89,12 +58,12 @@ void LLDrawPoolGlow::renderPostDeferred(S32 pass)
     gGL.setColorMask(false, true);
 
     //first pass -- static objects
-    setup_glow_shader(shader);
+    shader->bind();
     pushBatches(LLRenderPass::PASS_GLOW, true, true);
 
     // second pass -- rigged objects
     shader = shader->mRiggedVariant;
-    setup_glow_shader(shader);
+    shader->bind();
     pushRiggedBatches(LLRenderPass::PASS_GLOW_RIGGED, true, true);
 
     gGL.setColorMask(true, false);
@@ -133,11 +102,11 @@ void LLDrawPoolSimple::renderDeferred(S32 pass)
     LLGLDisable blend(GL_BLEND);
 
     //render static
-    setup_simple_shader(&gDeferredDiffuseProgram);
+    gDeferredDiffuseProgram.bind();
     pushBatches(LLRenderPass::PASS_SIMPLE, true, true);
 
     //render rigged
-    setup_simple_shader(gDeferredDiffuseProgram.mRiggedVariant);
+    gDeferredDiffuseProgram.bind(true);
     pushRiggedBatches(LLRenderPass::PASS_SIMPLE_RIGGED, true, true);
 }
 
@@ -150,11 +119,11 @@ void LLDrawPoolAlphaMask::renderDeferred(S32 pass)
     LLGLSLShader* shader = &gDeferredDiffuseAlphaMaskProgram;
 
     //render static
-    setup_simple_shader(shader);
+    shader->bind();
     pushMaskBatches(LLRenderPass::PASS_ALPHA_MASK, true, true);
 
     //render rigged
-    setup_simple_shader(shader->mRiggedVariant);
+    shader->bind(true);
     pushRiggedMaskBatches(LLRenderPass::PASS_ALPHA_MASK_RIGGED, true, true);
 }
 
@@ -201,13 +170,13 @@ void LLDrawPoolFullbright::renderPostDeferred(S32 pass)
     gGL.setSceneBlendType(LLRender::BT_ALPHA);
 
     // render static
-    setup_fullbright_shader(shader);
+    shader->bind();
     pushBatches(LLRenderPass::PASS_FULLBRIGHT, true, true);
 
     if (!LLPipeline::sRenderingHUDs)
     {
         // render rigged
-        setup_fullbright_shader(shader->mRiggedVariant);
+        shader->bind(true);
         pushRiggedBatches(LLRenderPass::PASS_FULLBRIGHT_RIGGED, true, true);
     }
 }
@@ -216,6 +185,10 @@ void LLDrawPoolFullbrightAlphaMask::renderPostDeferred(S32 pass)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWPOOL; //LL_RECORD_BLOCK_TIME(FTM_RENDER_FULLBRIGHT);
 
+    // render unrigged unlit GLTF
+    LL::GLTFSceneManager::instance().render(true, false, true);
+    LL::GLTFSceneManager::instance().render(true, true, true);
+
     LLGLSLShader* shader = nullptr;
     if (LLPipeline::sRenderingHUDs)
     {
@@ -229,13 +202,13 @@ void LLDrawPoolFullbrightAlphaMask::renderPostDeferred(S32 pass)
     LLGLDisable blend(GL_BLEND);
 
     // render static
-    setup_fullbright_shader(shader);
+    shader->bind();
     pushMaskBatches(LLRenderPass::PASS_FULLBRIGHT_ALPHA_MASK, true, true);
 
     if (!LLPipeline::sRenderingHUDs)
     {
         // render rigged
-        setup_fullbright_shader(shader->mRiggedVariant);
+        shader->bind(true);
         pushRiggedMaskBatches(LLRenderPass::PASS_FULLBRIGHT_ALPHA_MASK_RIGGED, true, true);
     }
 }
diff --git a/indra/newview/lldrawpoolterrain.cpp b/indra/newview/lldrawpoolterrain.cpp
index 02a77dc418..c8af45a907 100644
--- a/indra/newview/lldrawpoolterrain.cpp
+++ b/indra/newview/lldrawpoolterrain.cpp
@@ -202,11 +202,11 @@ void LLDrawPoolTerrain::drawLoop()
 
 void LLDrawPoolTerrain::renderFullShader()
 {
-    const BOOL use_local_materials = gLocalTerrainMaterials.materialsReady(true, false);
+    const bool use_local_materials = gLocalTerrainMaterials.makeMaterialsReady(true, false);
     // Hack! Get the region that this draw pool is rendering from!
     LLViewerRegion *regionp = mDrawFace[0]->getDrawable()->getVObj()->getRegion();
     LLVLComposition *compp = regionp->getComposition();
-    const BOOL use_textures = !use_local_materials && (compp->getMaterialType() == LLTerrainMaterials::Type::TEXTURE);
+    const bool use_textures = !use_local_materials && (compp->getMaterialType() == LLTerrainMaterials::Type::TEXTURE);
 
     if (use_textures)
     {
@@ -325,12 +325,12 @@ void LLDrawPoolTerrain::renderFullShaderTextures()
 }
 
 // *TODO: Investigate use of bindFast for PBR terrain textures
-void LLDrawPoolTerrain::renderFullShaderPBR(BOOL local_materials)
+void LLDrawPoolTerrain::renderFullShaderPBR(bool local_materials)
 {
     // Hack! Get the region that this draw pool is rendering from!
     LLViewerRegion *regionp = mDrawFace[0]->getDrawable()->getVObj()->getRegion();
     LLVLComposition *compp = regionp->getComposition();
-    LLPointer<LLFetchedGLTFMaterial> (*fetched_materials)[LLVLComposition::ASSET_COUNT] = &compp->mDetailMaterials;
+    LLPointer<LLFetchedGLTFMaterial> (*fetched_materials)[LLVLComposition::ASSET_COUNT] = &compp->mDetailRenderMaterials;
 
     constexpr U32 terrain_material_count = LLVLComposition::ASSET_COUNT;
 #ifdef SHOW_ASSERT
@@ -341,7 +341,7 @@ void LLDrawPoolTerrain::renderFullShaderPBR(BOOL local_materials)
     if (local_materials)
     {
         // Override region terrain with the global local override terrain
-        fetched_materials = &gLocalTerrainMaterials.mDetailMaterials;
+        fetched_materials = &gLocalTerrainMaterials.mDetailRenderMaterials;
     }
     const LLGLTFMaterial* materials[terrain_material_count];
     for (U32 i = 0; i < terrain_material_count; ++i)
@@ -432,14 +432,50 @@ void LLDrawPoolTerrain::renderFullShaderPBR(BOOL local_materials)
     LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
     llassert(shader);
 
-    LLGLTFMaterial::TextureTransform base_color_transform;
-    base_color_transform.mScale = LLVector2(sPBRDetailScale, sPBRDetailScale);
-    // *TODO: mOffset and mRotation left at defaults for now. (per-material texture transforms are implemented in another branch)
-    F32 base_color_packed[8];
-    base_color_transform.getPacked(base_color_packed);
-    // *HACK: Use the same texture repeats for all PBR terrain textures for now
-    // (not compliant with KHR texture transform spec)
-    shader->uniform4fv(LLShaderMgr::TEXTURE_BASE_COLOR_TRANSFORM, 2, (F32*)base_color_packed);
+    // Like for PBR materials, PBR terrain texture transforms are defined by
+    // the KHR_texture_transform spec, but with the following notable
+    // differences:
+    //   1) The PBR UV origin is defined as the Southwest corner of the region,
+    //      with positive U facing East and positive V facing South.
+    //   2) There is an additional scaling factor RenderTerrainPBRScale. If
+    //      we've done our math right, RenderTerrainPBRScale should not affect the
+    //      overall behavior of KHR_texture_transform
+    //   3) There is only one texture transform per material, whereas
+    //      KHR_texture_transform supports one texture transform per texture info.
+    //      i.e. this isn't fully compliant with KHR_texture_transform, but is
+    //      compliant when all texture infos used by a material have the same
+    //      texture transform.
+    LLGLTFMaterial::TextureTransform::PackTight transforms_packed[terrain_material_count];
+    for (U32 i = 0; i < terrain_material_count; ++i)
+    {
+        const LLFetchedGLTFMaterial* fetched_material = (*fetched_materials)[i].get();
+        LLGLTFMaterial::TextureTransform transform;
+        if (fetched_material)
+        {
+            transform = fetched_material->mTextureTransform[LLGLTFMaterial::GLTF_TEXTURE_INFO_BASE_COLOR];
+#ifdef SHOW_ASSERT
+            // Assert condition where the contents of the texture transforms
+            // differ per texture info - we currently don't support this case.
+            for (U32 ti = 1; ti < LLGLTFMaterial::GLTF_TEXTURE_INFO_COUNT; ++ti)
+            {
+                llassert(fetched_material->mTextureTransform[0] == fetched_material->mTextureTransform[ti]);
+            }
+#endif
+        }
+        // *NOTE: Notice here we are combining the scale from
+        // RenderTerrainPBRScale into the KHR_texture_transform. This only
+        // works if the scale is uniform and no other transforms are
+        // applied to the terrain UVs.
+        transform.mScale.mV[VX] *= sPBRDetailScale;
+        transform.mScale.mV[VY] *= sPBRDetailScale;
+
+        transform.getPackedTight(transforms_packed[i]);
+    }
+    const U32 transform_param_count = LLGLTFMaterial::TextureTransform::PACK_TIGHT_SIZE * terrain_material_count;
+    constexpr U32 vec4_size = 4;
+    const U32 transform_vec4_count = (transform_param_count + (vec4_size - 1)) / vec4_size;
+    llassert(transform_vec4_count == 5); // If false, need to update shader
+    shader->uniform4fv(LLShaderMgr::TERRAIN_TEXTURE_TRANSFORMS, transform_vec4_count, (F32*)transforms_packed);
 
     LLSettingsWater::ptr_t pwater = LLEnvironment::instance().getCurrentWater();
 
diff --git a/indra/newview/lldrawpoolterrain.h b/indra/newview/lldrawpoolterrain.h
index 5ee91eb47c..a8097fb58b 100644
--- a/indra/newview/lldrawpoolterrain.h
+++ b/indra/newview/lldrawpoolterrain.h
@@ -80,7 +80,7 @@ protected:
     void renderFull4TU();
     void renderFullShader();
     void renderFullShaderTextures();
-    void renderFullShaderPBR(BOOL local_materials = false);
+    void renderFullShaderPBR(bool local_materials = false);
     void drawLoop();
 
 private:
diff --git a/indra/newview/lldrawpooltree.cpp b/indra/newview/lldrawpooltree.cpp
index 43620747d4..6efd503574 100644
--- a/indra/newview/lldrawpooltree.cpp
+++ b/indra/newview/lldrawpooltree.cpp
@@ -132,9 +132,9 @@ void LLDrawPoolTree::endShadowPass(S32 pass)
     gDeferredTreeShadowProgram.unbind();
 }
 
-BOOL LLDrawPoolTree::verify() const
+bool LLDrawPoolTree::verify() const
 {
-    return TRUE;
+    return true;
 }
 
 LLViewerTexture *LLDrawPoolTree::getTexture()
diff --git a/indra/newview/lldrawpooltree.h b/indra/newview/lldrawpooltree.h
index 773c28ad66..b13ae6c16d 100644
--- a/indra/newview/lldrawpooltree.h
+++ b/indra/newview/lldrawpooltree.h
@@ -55,7 +55,7 @@ public:
     /*virtual*/ void endShadowPass(S32 pass);
     /*virtual*/ void renderShadow(S32 pass);
 
-    /*virtual*/ BOOL verify() const;
+    /*virtual*/ bool verify() const;
     /*virtual*/ LLViewerTexture *getTexture();
     /*virtual*/ LLViewerTexture *getDebugTexture();
     /*virtual*/ LLColor3 getDebugColor() const; // For AGP debug display
diff --git a/indra/newview/lldrawpoolwater.cpp b/indra/newview/lldrawpoolwater.cpp
index 938bcc37ff..71b82b77eb 100644
--- a/indra/newview/lldrawpoolwater.cpp
+++ b/indra/newview/lldrawpoolwater.cpp
@@ -49,12 +49,12 @@
 #include "llsettingssky.h"
 #include "llsettingswater.h"
 
-BOOL LLDrawPoolWater::sSkipScreenCopy = FALSE;
-BOOL LLDrawPoolWater::sNeedsReflectionUpdate = TRUE;
-BOOL LLDrawPoolWater::sNeedsDistortionUpdate = TRUE;
+bool LLDrawPoolWater::sSkipScreenCopy = false;
+bool LLDrawPoolWater::sNeedsReflectionUpdate = true;
+bool LLDrawPoolWater::sNeedsDistortionUpdate = true;
 F32 LLDrawPoolWater::sWaterFogEnd = 0.f;
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 LLDrawPoolWater::LLDrawPoolWater() : LLFacePool(POOL_WATER)
 {
@@ -256,7 +256,7 @@ void LLDrawPoolWater::renderPostDeferred(S32 pass)
 
         if (mShaderLevel == 1)
         {
-            fog_color.mV[VW] = log(fog_density) / log(2);
+            fog_color.mV[VALPHA] = log(fog_density) / log(2);
         }
 
         F32 water_height = environment.getWaterHeight();
@@ -325,8 +325,8 @@ void LLDrawPoolWater::renderPostDeferred(S32 pass)
                 // Note non-void water being drawn, updates required
                 if (!edge)  // SL-16461 remove !LLPipeline::sUseOcclusion check
                 {
-                    sNeedsReflectionUpdate = TRUE;
-                    sNeedsDistortionUpdate = TRUE;
+                    sNeedsReflectionUpdate = true;
+                    sNeedsDistortionUpdate = true;
                 }
             }
         }
diff --git a/indra/newview/lldrawpoolwater.h b/indra/newview/lldrawpoolwater.h
index a9944e27e6..f64477a059 100644
--- a/indra/newview/lldrawpoolwater.h
+++ b/indra/newview/lldrawpoolwater.h
@@ -44,9 +44,9 @@ protected:
     LLPointer<LLViewerTexture> mOpaqueWaterImagep;
 
 public:
-    static BOOL sSkipScreenCopy;
-    static BOOL sNeedsReflectionUpdate;
-    static BOOL sNeedsDistortionUpdate;
+    static bool sSkipScreenCopy;
+    static bool sNeedsReflectionUpdate;
+    static bool sNeedsDistortionUpdate;
     static F32 sWaterFogEnd;
 
     enum
diff --git a/indra/newview/lldrawpoolwlsky.cpp b/indra/newview/lldrawpoolwlsky.cpp
index c16b6408d7..047e9a8112 100644
--- a/indra/newview/lldrawpoolwlsky.cpp
+++ b/indra/newview/lldrawpoolwlsky.cpp
@@ -46,7 +46,7 @@
 #include "llsettingsvo.h"
 #include "llviewercontrol.h"
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 static LLStaticHashedString sCamPosLocal("camPosLocal");
 static LLStaticHashedString sCustomAlpha("custom_alpha");
diff --git a/indra/newview/lldrawpoolwlsky.h b/indra/newview/lldrawpoolwlsky.h
index 19e1e060fa..3c4b94b467 100644
--- a/indra/newview/lldrawpoolwlsky.h
+++ b/indra/newview/lldrawpoolwlsky.h
@@ -43,7 +43,7 @@ public:
     LLDrawPoolWLSky(void);
     /*virtual*/ ~LLDrawPoolWLSky();
 
-    /*virtual*/ BOOL isDead() { return FALSE; }
+    /*virtual*/ bool isDead() { return false; }
 
     /*virtual*/ S32 getNumDeferredPasses() { return 1; }
     /*virtual*/ void beginDeferredPass(S32 pass);
@@ -52,13 +52,13 @@ public:
 
     /*virtual*/ LLViewerTexture *getDebugTexture();
     /*virtual*/ U32 getVertexDataMask() { return SKY_VERTEX_DATA_MASK; }
-    /*virtual*/ BOOL verify() const { return TRUE; }        // Verify that all data in the draw pool is correct!
+    /*virtual*/ bool verify() const { return true; }        // Verify that all data in the draw pool is correct!
     /*virtual*/ S32 getShaderLevel() const { return mShaderLevel; }
 
     //static LLDrawPool* createPool(const U32 type, LLViewerTexture *tex0 = NULL);
 
     /*virtual*/ LLViewerTexture* getTexture();
-    /*virtual*/ BOOL isFacePool() { return FALSE; }
+    /*virtual*/ bool isFacePool() { return false; }
     /*virtual*/ void resetDrawOrders();
 
     static void cleanupGL();
diff --git a/indra/newview/lldynamictexture.cpp b/indra/newview/lldynamictexture.cpp
index f1145948a7..fe6cd4e37d 100644
--- a/indra/newview/lldynamictexture.cpp
+++ b/indra/newview/lldynamictexture.cpp
@@ -50,8 +50,8 @@ S32 LLViewerDynamicTexture::sNumRenders = 0;
 //-----------------------------------------------------------------------------
 // LLViewerDynamicTexture()
 //-----------------------------------------------------------------------------
-LLViewerDynamicTexture::LLViewerDynamicTexture(S32 width, S32 height, S32 components, EOrder order, BOOL clamp) :
-    LLViewerTexture(width, height, components, FALSE),
+LLViewerDynamicTexture::LLViewerDynamicTexture(S32 width, S32 height, S32 components, EOrder order, bool clamp) :
+    LLViewerTexture(width, height, components, false),
     mClamp(clamp)
 {
     llassert((1 <= components) && (components <= 4));
@@ -85,10 +85,10 @@ S8 LLViewerDynamicTexture::getType() const
 void LLViewerDynamicTexture::generateGLTexture()
 {
     LLViewerTexture::generateGLTexture() ;
-    generateGLTexture(-1, 0, 0, FALSE);
+    generateGLTexture(-1, 0, 0, false);
 }
 
-void LLViewerDynamicTexture::generateGLTexture(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, BOOL swap_bytes)
+void LLViewerDynamicTexture::generateGLTexture(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, bool swap_bytes)
 {
     if (mComponents < 1 || mComponents > 4)
     {
@@ -100,7 +100,7 @@ void LLViewerDynamicTexture::generateGLTexture(LLGLint internal_format, LLGLenum
     {
         setExplicitFormat(internal_format, primary_format, type_format, swap_bytes);
     }
-    createGLTexture(0, raw_image, 0, TRUE, LLGLTexture::DYNAMIC_TEX);
+    createGLTexture(0, raw_image, 0, true, LLGLTexture::DYNAMIC_TEX);
     setAddressMode((mClamp) ? LLTexUnit::TAM_CLAMP : LLTexUnit::TAM_WRAP);
     mGLTexturep->setGLTextureCreated(false);
 }
@@ -108,15 +108,15 @@ void LLViewerDynamicTexture::generateGLTexture(LLGLint internal_format, LLGLenum
 //-----------------------------------------------------------------------------
 // render()
 //-----------------------------------------------------------------------------
-BOOL LLViewerDynamicTexture::render()
+bool LLViewerDynamicTexture::render()
 {
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
 // preRender()
 //-----------------------------------------------------------------------------
-void LLViewerDynamicTexture::preRender(BOOL clear_depth)
+void LLViewerDynamicTexture::preRender(bool clear_depth)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
 
@@ -142,7 +142,7 @@ void LLViewerDynamicTexture::preRender(BOOL clear_depth)
 //-----------------------------------------------------------------------------
 // postRender()
 //-----------------------------------------------------------------------------
-void LLViewerDynamicTexture::postRender(BOOL success)
+void LLViewerDynamicTexture::postRender(bool success)
 {
     {
         if (success)
@@ -181,14 +181,14 @@ void LLViewerDynamicTexture::postRender(BOOL success)
 // updateDynamicTextures()
 // Calls update on each dynamic texture.  Calls each group in order: "first," then "middle," then "last."
 //-----------------------------------------------------------------------------
-BOOL LLViewerDynamicTexture::updateAllInstances()
+bool LLViewerDynamicTexture::updateAllInstances()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
 
     sNumRenders = 0;
     if (gGLManager.mIsDisabled)
     {
-        return TRUE;
+        return true;
     }
 
     LLRenderTarget& bake_target = gPipeline.mAuxillaryRT.deferredScreen;
@@ -196,7 +196,7 @@ BOOL LLViewerDynamicTexture::updateAllInstances()
     if (!bake_target.isComplete())
     {
         llassert(false);
-        return FALSE;
+        return false;
     }
     llassert(bake_target.getWidth() >= LLPipeline::MAX_BAKE_WIDTH);
     llassert(bake_target.getHeight() >= LLPipeline::MAX_BAKE_WIDTH);
@@ -207,8 +207,8 @@ BOOL LLViewerDynamicTexture::updateAllInstances()
     LLGLSLShader::unbind();
     LLVertexBuffer::unbind();
 
-    BOOL result = FALSE;
-    BOOL ret = FALSE ;
+    bool result = false;
+    bool ret = false ;
     for( S32 order = 0; order < ORDER_COUNT; order++ )
     {
         for (instance_list_t::iterator iter = LLViewerDynamicTexture::sInstances[order].begin();
@@ -217,19 +217,19 @@ BOOL LLViewerDynamicTexture::updateAllInstances()
             LLViewerDynamicTexture *dynamicTexture = *iter;
             if (dynamicTexture->needsRender())
             {
-                llassert(dynamicTexture->getFullWidth() <= LLPipeline::MAX_BAKE_WIDTH);
-                llassert(dynamicTexture->getFullHeight() <= LLPipeline::MAX_BAKE_WIDTH);
+                llassert(dynamicTexture->getFullWidth() <= S32(LLPipeline::MAX_BAKE_WIDTH));
+                llassert(dynamicTexture->getFullHeight() <= S32(LLPipeline::MAX_BAKE_WIDTH));
 
                 glClear(GL_DEPTH_BUFFER_BIT);
 
                 gGL.color4f(1,1,1,1);
                 dynamicTexture->setBoundTarget(&bake_target);
                 dynamicTexture->preRender();    // Must be called outside of startRender()
-                result = FALSE;
+                result = false;
                 if (dynamicTexture->render())
                 {
-                    ret = TRUE ;
-                    result = TRUE;
+                    ret = true ;
+                    result = true;
                     sNumRenders++;
                 }
                 gGL.flush();
diff --git a/indra/newview/lldynamictexture.h b/indra/newview/lldynamictexture.h
index 118afb4d5a..375828fefa 100644
--- a/indra/newview/lldynamictexture.h
+++ b/indra/newview/lldynamictexture.h
@@ -60,7 +60,7 @@ public:
                      S32 height,
                      S32 components,        // = 4,
                      EOrder order,          // = ORDER_MIDDLE,
-                     BOOL clamp);
+                     bool clamp);
 
     /*virtual*/ S8 getType() const ;
 
@@ -69,15 +69,15 @@ public:
 
     S32         getSize()       { return mFullWidth * mFullHeight * mComponents; }
 
-    virtual BOOL needsRender() { return TRUE; }
-    virtual void preRender(BOOL clear_depth = TRUE);
-    virtual BOOL render();
-    virtual void postRender(BOOL success);
+    virtual bool needsRender() { return true; }
+    virtual void preRender(bool clear_depth = true);
+    virtual bool render();
+    virtual void postRender(bool success);
 
     virtual void restoreGLTexture() {}
     virtual void destroyGLTexture() {}
 
-    static BOOL updateAllInstances();
+    static bool updateAllInstances();
     static void destroyGL() ;
     static void restoreGL() ;
 
@@ -85,10 +85,10 @@ public:
 
 protected:
     void generateGLTexture();
-    void generateGLTexture(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, BOOL swap_bytes = FALSE);
+    void generateGLTexture(LLGLint internal_format, LLGLenum primary_format, LLGLenum type_format, bool swap_bytes = false);
 
 protected:
-    BOOL mClamp;
+    bool mClamp;
     LLCoordGL mOrigin;
     LL_ALIGN_16(LLCamera mCamera);
 
diff --git a/indra/newview/llemote.cpp b/indra/newview/llemote.cpp
index 95ced2008f..e952a29c54 100644
--- a/indra/newview/llemote.cpp
+++ b/indra/newview/llemote.cpp
@@ -74,7 +74,7 @@ LLMotion::LLMotionInitStatus LLEmote::onInitialize(LLCharacter *character)
 //-----------------------------------------------------------------------------
 // LLEmote::onActivate()
 //-----------------------------------------------------------------------------
-BOOL LLEmote::onActivate()
+bool LLEmote::onActivate()
 {
     LLVisualParam* default_param = mCharacter->getVisualParam( "Express_Closed_Mouth" );
     if( default_param )
@@ -89,14 +89,14 @@ BOOL LLEmote::onActivate()
         mCharacter->updateVisualParams();
     }
 
-    return TRUE;
+    return true;
 }
 
 
 //-----------------------------------------------------------------------------
 // LLEmote::onUpdate()
 //-----------------------------------------------------------------------------
-BOOL LLEmote::onUpdate(F32 time, U8* joint_mask)
+bool LLEmote::onUpdate(F32 time, U8* joint_mask)
 {
     if( mParam )
     {
@@ -116,7 +116,7 @@ BOOL LLEmote::onUpdate(F32 time, U8* joint_mask)
         mCharacter->updateVisualParams();
     }
 
-    return TRUE;
+    return true;
 }
 
 
diff --git a/indra/newview/llemote.h b/indra/newview/llemote.h
index f1b9d4a18d..3c453fee7b 100644
--- a/indra/newview/llemote.h
+++ b/indra/newview/llemote.h
@@ -69,7 +69,7 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() { return FALSE; }
+    virtual bool getLoop() { return false; }
 
     // motions must report their total duration
     virtual F32 getDuration() { return EMOTE_MORPH_FADEIN_TIME + EMOTE_MORPH_IN_TIME + EMOTE_MORPH_FADEOUT_TIME; }
@@ -94,19 +94,19 @@ public:
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate();
+    virtual bool onActivate();
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask);
 
     // called when a motion is deactivated
     virtual void onDeactivate();
 
-    virtual BOOL canDeprecate() { return FALSE; }
+    virtual bool canDeprecate() { return false; }
 
 protected:
 
diff --git a/indra/newview/llenvironment.cpp b/indra/newview/llenvironment.cpp
index 3c0a523317..8884905cf0 100644
--- a/indra/newview/llenvironment.cpp
+++ b/indra/newview/llenvironment.cpp
@@ -757,7 +757,7 @@ namespace
         LLEnvironment::DayInstance::ptr_t   getBaseDayInstance() const  { return mBaseDayInstance; }
         void                                setBaseDayInstance(const LLEnvironment::DayInstance::ptr_t &baseday);
 
-        S32                                 countExperiencesActive() const { return mActiveExperiences.size(); }
+        S32                                 countExperiencesActive() const { return static_cast<S32>(mActiveExperiences.size()); }
 
         bool                                isOverriddenSky() const { return !mSkyExperience.isNull(); }
         bool                                isOverriddenWater() const { return !mWaterExperience.isNull(); }
@@ -1647,7 +1647,7 @@ LLVector4 LLEnvironment::getRotatedLightNorm() const
     return toLightNorm(light_direction);
 }
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 //-------------------------------------------------------------------------
 void LLEnvironment::update(const LLViewerCamera * cam)
@@ -1680,15 +1680,15 @@ void LLEnvironment::update(const LLViewerCamera * cam)
         end_shaders = LLViewerShaderMgr::instance()->endShaders();
         for (shaders_iter = LLViewerShaderMgr::instance()->beginShaders(); shaders_iter != end_shaders; ++shaders_iter)
         {
-            if ((shaders_iter->mProgramObject != 0)
-                && (gPipeline.canUseWindLightShaders()
-                || shaders_iter->mShaderGroup == LLGLSLShader::SG_WATER))
+            shaders_iter->mUniformsDirty = true;
+            if (shaders_iter->mRiggedVariant)
             {
-                shaders_iter->mUniformsDirty = TRUE;
-                if (shaders_iter->mRiggedVariant)
-                {
-                    shaders_iter->mRiggedVariant->mUniformsDirty = TRUE;
-                }
+                shaders_iter->mRiggedVariant->mUniformsDirty = true;
+            }
+
+            for (auto& variant : shaders_iter->mGLTFVariants)
+            {
+                variant.mUniformsDirty = true;
             }
         }
     }
@@ -2512,7 +2512,7 @@ LLSettingsDay::ptr_t LLEnvironment::createDayCycleFromEnvironment(EnvSelection_t
 
     if (type == "sky")
     {
-        for (S32 idx = 1; idx < LLSettingsDay::TRACK_MAX; ++idx)
+        for (U32 idx = 1; idx < LLSettingsDay::TRACK_MAX; ++idx)
             day->clearCycleTrack(idx);
         day->setSettingsAtKeyframe(settings, 0.0f, 1);
     }
diff --git a/indra/newview/lleventnotifier.cpp b/indra/newview/lleventnotifier.cpp
index 93389bbc0f..16897e9ebd 100644
--- a/indra/newview/lleventnotifier.cpp
+++ b/indra/newview/lleventnotifier.cpp
@@ -294,14 +294,13 @@ void LLEventNotifier::load(const LLSD& event_options)
 }
 
 
-
-BOOL LLEventNotifier::hasNotification(const U32 event_id)
+bool LLEventNotifier::hasNotification(const U32 event_id)
 {
     if (mEventNotifications.find(event_id) != mEventNotifications.end())
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 void LLEventNotifier::remove(const U32 event_id)
diff --git a/indra/newview/lleventnotifier.h b/indra/newview/lleventnotifier.h
index d8ab2bafce..f013f6d02e 100644
--- a/indra/newview/lleventnotifier.h
+++ b/indra/newview/lleventnotifier.h
@@ -68,7 +68,7 @@ public:
     void load(const LLSD& event_options);   // In the format that it comes in from login
     void remove(U32 event_id);
 
-    BOOL hasNotification(const U32 event_id);
+    bool hasNotification(const U32 event_id);
     void serverPushRequest(U32 event_id, bool add);
 
     typedef std::map<U32, LLEventNotification *> en_map;
diff --git a/indra/newview/llexpandabletextbox.cpp b/indra/newview/llexpandabletextbox.cpp
index 7ac90a04db..4c105176b6 100644
--- a/indra/newview/llexpandabletextbox.cpp
+++ b/indra/newview/llexpandabletextbox.cpp
@@ -93,12 +93,12 @@ public:
     }
     /*virtual*/ bool    canEdit() const { return false; }
     // eat handleMouseDown event so we get the mouseup event
-    /*virtual*/ BOOL    handleMouseDown(S32 x, S32 y, MASK mask) { return TRUE; }
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask) { mEditor.onCommit(); return TRUE; }
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask)
+    /*virtual*/ bool    handleMouseDown(S32 x, S32 y, MASK mask) { return true; }
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask) { mEditor.onCommit(); return true; }
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask)
     {
         LLUI::getInstance()->getWindow()->setCursor(UI_CURSOR_HAND);
-        return TRUE;
+        return true;
     }
 private:
     LLTextBase& mEditor;
@@ -115,11 +115,11 @@ LLExpandableTextBox::LLTextBoxEx::LLTextBoxEx(const Params& p)
     mExpanderLabel(p.label.isProvided() ? p.label : LLTrans::getString("More")),
     mExpanderVisible(false)
 {
-    setIsChrome(TRUE);
+    setIsChrome(true);
     setMaxTextLength(p.max_text_length);
 }
 
-void LLExpandableTextBox::LLTextBoxEx::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLExpandableTextBox::LLTextBoxEx::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLTextEditor::reshape(width, height, called_from_parent);
 }
@@ -253,11 +253,11 @@ void LLExpandableTextBox::draw()
 {
     if(mBGVisible && !mExpanded)
     {
-        gl_rect_2d(getLocalRect(), mBGColor.get(), TRUE);
+        gl_rect_2d(getLocalRect(), mBGColor.get(), true);
     }
     if(mExpandedBGVisible && mExpanded)
     {
-        gl_rect_2d(getLocalRect(), mExpandedBGColor.get(), TRUE);
+        gl_rect_2d(getLocalRect(), mExpandedBGColor.get(), true);
     }
 
     collapseIfPosChanged();
@@ -389,10 +389,10 @@ void LLExpandableTextBox::expandTextBox()
 
     // expand text box
     localRectToOtherView(expanded_rect, &expanded_screen_rect, getParent());
-    reshape(expanded_screen_rect.getWidth(), expanded_screen_rect.getHeight(), FALSE);
+    reshape(expanded_screen_rect.getWidth(), expanded_screen_rect.getHeight(), false);
     setRect(expanded_screen_rect);
 
-    setFocus(TRUE);
+    setFocus(true);
     // this lets us receive top_lost event(needed to collapse text box)
     // it also draws text box above all other ui elements
     gViewerWindow->addPopup(this);
@@ -409,7 +409,7 @@ void LLExpandableTextBox::collapseTextBox()
 
     mExpanded = false;
 
-    reshape(mCollapsedRect.getWidth(), mCollapsedRect.getHeight(), FALSE);
+    reshape(mCollapsedRect.getWidth(), mCollapsedRect.getHeight(), false);
     setRect(mCollapsedRect);
 
     updateTextBoxRect();
@@ -436,7 +436,7 @@ void LLExpandableTextBox::updateTextShape()
     updateTextBoxRect();
 }
 
-void LLExpandableTextBox::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLExpandableTextBox::reshape(S32 width, S32 height, bool called_from_parent)
 {
     mExpanded = false;
     LLUICtrl::reshape(width, height, called_from_parent);
diff --git a/indra/newview/llexpandabletextbox.h b/indra/newview/llexpandabletextbox.h
index d992f3131a..f074b0e6ad 100644
--- a/indra/newview/llexpandabletextbox.h
+++ b/indra/newview/llexpandabletextbox.h
@@ -52,7 +52,7 @@ protected:
         };
 
         // adds or removes "More" link as needed
-        /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+        /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
         /*virtual*/ void setText(const LLStringExplicit& text, const LLStyle::Params& input_params = LLStyle::Params());
         void setTextBase(const std::string& text) { LLTextBase::setText(text); }
 
@@ -147,7 +147,7 @@ public:
      * *HACK: Update the inner textbox shape.
      */
     void updateTextShape();
-    virtual void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual void reshape(S32 width, S32 height, bool called_from_parent = true);
 
     /**
      * Draws text box, collapses text box if its expanded and its parent's position changed
diff --git a/indra/newview/llexternaleditor.cpp b/indra/newview/llexternaleditor.cpp
index f96dd6fe67..3decd15bbd 100644
--- a/indra/newview/llexternaleditor.cpp
+++ b/indra/newview/llexternaleditor.cpp
@@ -136,8 +136,8 @@ size_t LLExternalEditor::tokenize(string_vec_t& tokens, const std::string& str)
 
     tokenizer tokens_list(str, sep);
     tokenizer::iterator token_iter;
-    BOOL inside_quotes = FALSE;
-    BOOL last_was_space = FALSE;
+    bool inside_quotes = false;
+    bool last_was_space = false;
     for (token_iter = tokens_list.begin(); token_iter != tokens_list.end(); ++token_iter)
     {
         if (!strncmp("\"",(*token_iter).c_str(),2))
@@ -149,7 +149,7 @@ size_t LLExternalEditor::tokenize(string_vec_t& tokens, const std::string& str)
             if(inside_quotes)
             {
                 tokens.back().append(std::string(" "));
-                last_was_space = TRUE;
+                last_was_space = true;
             }
         }
         else
@@ -158,7 +158,7 @@ size_t LLExternalEditor::tokenize(string_vec_t& tokens, const std::string& str)
             if (last_was_space)
             {
                 tokens.back().append(to_push);
-                last_was_space = FALSE;
+                last_was_space = false;
             }
             else
             {
diff --git a/indra/newview/llface.cpp b/indra/newview/llface.cpp
index e46043b77e..a25879ab3a 100644
--- a/indra/newview/llface.cpp
+++ b/indra/newview/llface.cpp
@@ -62,7 +62,7 @@
 static LLStaticHashedString sTextureIndexIn("texture_index_in");
 static LLStaticHashedString sColorIn("color_in");
 
-BOOL LLFace::sSafeRenderSelect = TRUE; // FALSE
+bool LLFace::sSafeRenderSelect = true; // false
 
 
 #define DOTVEC(a,b) (a.mV[0]*b.mV[0] + a.mV[1]*b.mV[1] + a.mV[2]*b.mV[2])
@@ -322,7 +322,7 @@ void LLFace::dirtyTexture()
                 LLVOVolume* vobj = drawablep->getVOVolume();
                 if (vobj)
                 {
-                    vobj->mLODChanged = TRUE;
+                    vobj->mLODChanged = true;
 
                     vobj->updateVisualComplexity();
                 }
@@ -628,13 +628,6 @@ void LLFace::renderOneWireframe(const LLColor4 &color, F32 fogCfx, bool wirefram
 
     {
         LLGLDisable depth(wireframe_selection ? 0 : GL_BLEND);
-        //LLGLEnable stencil(wireframe_selection ? 0 : GL_STENCIL_TEST);
-
-        if (!wireframe_selection)
-        { //modify wireframe into outline selection mode
-            glStencilFunc(GL_NOTEQUAL, 2, 0xffff);
-            glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
-        }
 
 #if GL_VERSION_1_1
         LLGLEnable offset(GL_POLYGON_OFFSET_LINE);
@@ -811,8 +804,8 @@ bool less_than_max_mag(const LLVector4a& vec)
     return lt == 0x7;
 }
 
-BOOL LLFace::genVolumeBBoxes(const LLVolume &volume, S32 f,
-                             const LLMatrix4& mat_vert_in, BOOL global_volume)
+bool LLFace::genVolumeBBoxes(const LLVolume &volume, S32 f,
+                             const LLMatrix4& mat_vert_in, bool global_volume)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE
 
@@ -837,7 +830,7 @@ BOOL LLFace::genVolumeBBoxes(const LLVolume &volume, S32 f,
         {
             LL_DEBUGS("RiggedBox") << "skipping face " << f << ", bad num vertices "
                                    << face.mNumVertices << " " << face.mNumIndices << " " << face.mWeights << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         //VECTORIZE THIS
@@ -876,7 +869,7 @@ BOOL LLFace::genVolumeBBoxes(const LLVolume &volume, S32 f,
         updateCenterAgent();
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -1146,7 +1139,7 @@ void push_for_transform(LLVertexBuffer* buff, U32 source_count, U32 dest_count)
     }
 }
 
-BOOL LLFace::getGeometryVolume(const LLVolume& volume,
+bool LLFace::getGeometryVolume(const LLVolume& volume,
                                 S32 face_index,
                                 const LLMatrix4& mat_vert_in,
                                 const LLMatrix3& mat_norm_in,
@@ -1167,7 +1160,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
                 " Attempt get access to: " << face_index << LL_ENDL;
             llassert(no_debug_assert);
         }
-        return FALSE;
+        return false;
     }
 
     bool rigged = isState(RIGGED);
@@ -1183,7 +1176,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
 
     if (mVertexBuffer.notNull())
     {
-        if (num_indices + (S32) mIndicesIndex > mVertexBuffer->getNumIndices())
+        if (num_indices + mIndicesIndex > mVertexBuffer->getNumIndices())
         {
             if (gDebugGL)
             {
@@ -1196,17 +1189,17 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
                         << " Pool Type: " << mPoolType << LL_ENDL;
                 llassert(no_debug_assert);
             }
-            return FALSE;
+            return false;
         }
 
-        if (num_vertices + mGeomIndex > mVertexBuffer->getNumVerts())
+        if (num_vertices + (U32)mGeomIndex > mVertexBuffer->getNumVerts())
         {
             if (gDebugGL)
             {
                 LL_WARNS() << "Vertex buffer overflow!" << LL_ENDL;
                 llassert(no_debug_assert);
             }
-            return FALSE;
+            return false;
         }
     }
 
@@ -1220,9 +1213,9 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
     LLStrider<U16> indicesp;
     LLStrider<LLVector4> wght;
 
-    BOOL full_rebuild = force_rebuild || mDrawablep->isState(LLDrawable::REBUILD_VOLUME);
+    bool full_rebuild = force_rebuild || mDrawablep->isState(LLDrawable::REBUILD_VOLUME);
 
-    BOOL global_volume = mDrawablep->getVOVolume()->isVolumeGlobal();
+    bool global_volume = mDrawablep->getVOVolume()->isVolumeGlobal();
     LLVector3 scale;
     if (global_volume)
     {
@@ -1244,8 +1237,8 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
     const LLTextureEntry *tep = mVObjp->getTE(face_index);
     const U8 bump_code = tep ? tep->getBumpmap() : 0;
 
-    BOOL is_static = mDrawablep->isStatic();
-    BOOL is_global = is_static;
+    bool is_static = mDrawablep->isStatic();
+    bool is_global = is_static;
 
     LLVector3 center_sum(0.f, 0.f, 0.f);
 
@@ -1258,11 +1251,15 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
         clearState(GLOBAL);
     }
 
-    LLColor4U color = tep->getColor();
-
-    if (tep->getGLTFRenderMaterial())
+    LLColor4U color{};
+    if (tep)
     {
-        color = tep->getGLTFRenderMaterial()->mBaseColor;
+        color = tep->getColor();
+
+        if (tep->getGLTFRenderMaterial())
+        {
+            color = tep->getGLTFRenderMaterial()->mBaseColor;
+        }
     }
 
     if (rebuild_color)
@@ -1598,7 +1595,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
                             mask.setElement<2>();
                             mask.setElement<3>();
 
-                            U32 count = num_vertices/2 + num_vertices%2;
+                            S32 count = num_vertices/2 + num_vertices%2;
 
                             for (S32 i = 0; i < count; i++)
                             {
@@ -2014,7 +2011,7 @@ BOOL LLFace::getGeometryVolume(const LLVolume& volume,
     }
 
 
-    return TRUE;
+    return true;
 }
 
 void LLFace::renderIndexed()
@@ -2027,18 +2024,18 @@ void LLFace::renderIndexed()
 }
 
 //check if the face has a media
-BOOL LLFace::hasMedia() const
+bool LLFace::hasMedia() const
 {
     if(mHasMedia)
     {
-        return TRUE ;
+        return true ;
     }
     if(mTexture[LLRender::DIFFUSE_MAP].notNull())
     {
         return mTexture[LLRender::DIFFUSE_MAP]->hasParcelMedia() ;  //if has a parcel media
     }
 
-    return FALSE ; //no media.
+    return false ; //no media.
 }
 
 const F32 LEAST_IMPORTANCE = 0.05f ;
@@ -2055,7 +2052,7 @@ F32 LLFace::getTextureVirtualSize()
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     F32 radius;
     F32 cos_angle_to_view_dir;
-    BOOL in_frustum = calcPixelArea(cos_angle_to_view_dir, radius);
+    bool in_frustum = calcPixelArea(cos_angle_to_view_dir, radius);
 
     if (mPixelArea < F_ALMOST_ZERO || !in_frustum)
     {
@@ -2099,7 +2096,7 @@ F32 LLFace::getTextureVirtualSize()
     return face_area;
 }
 
-BOOL LLFace::calcPixelArea(F32& cos_angle_to_view_dir, F32& radius)
+bool LLFace::calcPixelArea(F32& cos_angle_to_view_dir, F32& radius)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_FACE;
 
@@ -2285,19 +2282,19 @@ F32 LLFace::adjustPixelArea(F32 importance, F32 pixel_area)
     return pixel_area ;
 }
 
-BOOL LLFace::verify(const U32* indices_array) const
+bool LLFace::verify(const U32* indices_array) const
 {
-    BOOL ok = TRUE;
+    bool ok = true;
 
     if( mVertexBuffer.isNull() )
     { //no vertex buffer, face is implicitly valid
-        return TRUE;
+        return true;
     }
 
     // First, check whether the face data fits within the pool's range.
-    if ((mGeomIndex + mGeomCount) > mVertexBuffer->getNumVerts())
+    if ((U32)(mGeomIndex + mGeomCount) > mVertexBuffer->getNumVerts())
     {
-        ok = FALSE;
+        ok = false;
         LL_INFOS() << "Face references invalid vertices!" << LL_ENDL;
     }
 
@@ -2305,18 +2302,18 @@ BOOL LLFace::verify(const U32* indices_array) const
 
     if (!indices_count)
     {
-        return TRUE;
+        return true;
     }
 
     if (indices_count > LL_MAX_INDICES_COUNT)
     {
-        ok = FALSE;
+        ok = false;
         LL_INFOS() << "Face has bogus indices count" << LL_ENDL;
     }
 
     if (mIndicesIndex + mIndicesCount > mVertexBuffer->getNumIndices())
     {
-        ok = FALSE;
+        ok = false;
         LL_INFOS() << "Face references invalid indices!" << LL_ENDL;
     }
 
@@ -2333,13 +2330,13 @@ BOOL LLFace::verify(const U32* indices_array) const
         {
             LL_WARNS() << "Face index too low!" << LL_ENDL;
             LL_INFOS() << "i:" << i << " Index:" << indicesp[i] << " GStart: " << geom_start << LL_ENDL;
-            ok = FALSE;
+            ok = false;
         }
         else if (delta >= geom_count)
         {
             LL_WARNS() << "Face index too high!" << LL_ENDL;
             LL_INFOS() << "i:" << i << " Index:" << indicesp[i] << " GEnd: " << geom_start + geom_count << LL_ENDL;
-            ok = FALSE;
+            ok = false;
         }
     }
 #endif
diff --git a/indra/newview/llface.h b/indra/newview/llface.h
index 6ee636a6c5..917f3aa0b2 100644
--- a/indra/newview/llface.h
+++ b/indra/newview/llface.h
@@ -107,7 +107,7 @@ public:
     void            switchTexture(U32 ch, LLViewerTexture* new_texture);
     void            dirtyTexture();
     LLXformMatrix*  getXform()          const   { return mXform; }
-    BOOL            hasGeometry()       const   { return mGeomCount > 0; }
+    bool            hasGeometry()       const   { return mGeomCount > 0; }
     LLVector3       getPositionAgent()  const;
     LLVector2       surfaceToTexture(LLVector2 surface_coord, const LLVector4a& position, const LLVector4a& normal);
     void            getPlanarProjectedParams(LLQuaternion* face_rot, LLVector3* face_pos, F32* scale) const;
@@ -117,14 +117,14 @@ public:
     U32             getState()          const   { return mState; }
     void            setState(U32 state)         { mState |= state; }
     void            clearState(U32 state)       { mState &= ~state; }
-    BOOL            isState(U32 state)  const   { return ((mState & state) != 0) ? TRUE : FALSE; }
+    bool            isState(U32 state)  const   { return (mState & state) != 0; }
     void            setVirtualSize(F32 size) { mVSize = size; }
     void            setPixelArea(F32 area)  { mPixelArea = area; }
     F32             getVirtualSize() const { return mVSize; }
     F32             getPixelArea() const { return mPixelArea; }
 
-    S32             getIndexInTex(U32 ch) const {llassert(ch < LLRender::NUM_TEXTURE_CHANNELS); return mIndexInTex[ch];}
-    void            setIndexInTex(U32 ch, S32 index) { llassert(ch < LLRender::NUM_TEXTURE_CHANNELS);  mIndexInTex[ch] = index ;}
+    S32             getIndexInTex(U32 ch) const      { llassert(ch < LLRender::NUM_TEXTURE_CHANNELS); return mIndexInTex[ch]; }
+    void            setIndexInTex(U32 ch, S32 index) { llassert(ch < LLRender::NUM_TEXTURE_CHANNELS); mIndexInTex[ch] = index; }
 
     void            setWorldMatrix(const LLMatrix4& mat);
     const LLTextureEntry* getTextureEntry() const { return mVObjp->getTE(mTEOffset); }
@@ -155,7 +155,7 @@ public:
     //for volumes
     void updateRebuildFlags();
     bool canRenderAsMask(); // logic helper
-    BOOL getGeometryVolume(const LLVolume& volume,
+    bool getGeometryVolume(const LLVolume& volume,
                             S32 face_index,
                             const LLMatrix4& mat_vert,
                             const LLMatrix3& mat_normal,
@@ -182,8 +182,8 @@ public:
 
     void        setSize(S32 numVertices, S32 num_indices = 0, bool align = false);
 
-    BOOL        genVolumeBBoxes(const LLVolume &volume, S32 f,
-                                    const LLMatrix4& mat_vert_in, BOOL global_volume = FALSE);
+    bool        genVolumeBBoxes(const LLVolume &volume, S32 f,
+                                    const LLMatrix4& mat_vert_in, bool global_volume = false);
 
     void        init(LLDrawable* drawablep, LLViewerObject* objp);
     void        destroy();
@@ -200,7 +200,7 @@ public:
     S32         getReferenceIndex()         const   { return mReferenceIndex; }
     void        setReferenceIndex(const S32 index)  { mReferenceIndex = index; }
 
-    BOOL        verify(const U32* indices_array = NULL) const;
+    bool        verify(const U32* indices_array = NULL) const;
     void        printDebugInfo() const;
 
     void        setGeomIndex(U16 idx);
@@ -212,12 +212,12 @@ public:
     void        resetVirtualSize();
 
     void        setHasMedia(bool has_media)  { mHasMedia = has_media ;}
-    BOOL        hasMedia() const ;
+    bool        hasMedia() const ;
 
     void        setMediaAllowed(bool is_media_allowed)  { mIsMediaAllowed = is_media_allowed; }
-    BOOL        isMediaAllowed() const { return mIsMediaAllowed; }
+    bool        isMediaAllowed() const { return mIsMediaAllowed; }
 
-    BOOL        switchTexture() ;
+    bool        switchTexture() ;
 
     //vertex buffer tracking
     void setVertexBuffer(LLVertexBuffer* buffer);
@@ -239,7 +239,7 @@ public: //aligned members
 private:
     friend class LLViewerTextureList;
     F32         adjustPartialOverlapPixelArea(F32 cos_angle_to_view_dir, F32 radius );
-    BOOL        calcPixelArea(F32& cos_angle_to_view_dir, F32& radius) ;
+    bool        calcPixelArea(F32& cos_angle_to_view_dir, F32& radius) ;
 public:
     static F32 calcImportanceToCamera(F32 to_view_dir, F32 dist);
     static F32 adjustPixelArea(F32 importance, F32 pixel_area) ;
@@ -309,7 +309,7 @@ private:
     U32 mDrawOrderIndex = 0; // see setDrawOrderIndex
 
 protected:
-    static BOOL sSafeRenderSelect;
+    static bool sSafeRenderSelect;
 
 public:
     struct CompareDistanceGreater
diff --git a/indra/newview/llface.inl b/indra/newview/llface.inl
deleted file mode 100644
index 566917d800..0000000000
--- a/indra/newview/llface.inl
+++ /dev/null
@@ -1,160 +0,0 @@
-/**
- * @file llface.inl
- * @brief Inline functions for LLFace
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLFACE_INL
-#define LL_LLFACE_INL
-
-#include "llglheaders.h"
-#include "llrender.h"
-
-inline BOOL LLFace::getDirty() const
-{
-    return (mGeneration != mDrawPoolp->mGeneration);
-}
-
-inline void LLFace::clearDirty()
-{
-    mGeneration = mDrawPoolp->mGeneration;
-}
-
-inline const LLTextureEntry* LLFace::getTextureEntry()   const
-{
-    return mVObjp->getTE(mTEOffset);
-}
-
-inline LLDrawPool* LLFace::getPool()     const
-{
-    return mDrawPoolp;
-}
-
-inline S32 LLFace::getStride()   const
-{
-    return mDrawPoolp->getStride();
-}
-
-inline LLDrawable* LLFace::getDrawable() const
-{
-    return mDrawablep;
-}
-
-inline LLViewerObject* LLFace::getViewerObject() const
-{
-    return mVObjp;
-}
-
-inline S32  LLFace::getColors     (LLStrider<LLColor4U> &colors)
-{
-    if (!mGeomCount)
-    {
-        return -1;
-    }
-    LLColor4U *colorp = NULL;
-    if (isState(BACKLIST))
-    {
-        if (!mBackupMem)
-        {
-            printDebugInfo();
-            LL_ERRS() << "No backup memory for face" << LL_ENDL;
-        }
-        colorp = (LLColor4U*)(mBackupMem + (4 * mIndicesCount) + (mGeomCount * mDrawPoolp->getStride()));
-        colors = colorp;
-        return 0;
-    }
-    else
-    {
-        llassert(mGeomIndex >= 0);
-        if (!mDrawPoolp->getColorStrider(colors, mGeomIndex))
-        {
-            printDebugInfo();
-            LL_ERRS() << "No color pointer for a color strider!" << LL_ENDL;
-        }
-        mDrawPoolp->setDirtyColors();
-        return mGeomIndex;
-    }
-}
-
-inline S32  LLFace::getTexCoords  (LLStrider<LLVector2> &texCoords, S32 pass )
-{
-    if (!mGeomCount)
-    {
-        return -1;
-    }
-    if (isState(BACKLIST))
-    {
-        if (!mBackupMem)
-        {
-            printDebugInfo();
-            LL_ERRS() << "No backup memory for face" << LL_ENDL;
-        }
-        texCoords = (LLVector2*)(mBackupMem + (4 * mIndicesCount) + mDrawPoolp->mDataOffsets[LLDrawPool::DATA_TEX_COORDS0 + pass]);
-        texCoords.setStride( mDrawPoolp->getStride());
-        return 0;
-    }
-    else
-    {
-        llassert(mGeomIndex >= 0);
-        mDrawPoolp->getTexCoordStrider(texCoords, mGeomIndex, pass );
-        mDrawPoolp->setDirty();
-        return mGeomIndex;
-    }
-}
-
-inline S32  LLFace::getIndices    (U32*  &indicesp)
-{
-    if (isState(BACKLIST))
-    {
-        indicesp = (U32*)mBackupMem;
-        return 0;
-    }
-    else
-    {
-        indicesp = mDrawPoolp->getIndices(mIndicesIndex);
-        llassert(mGeomIndex >= 0);
-        return mGeomIndex;
-    }
-}
-
-inline const U32* LLFace::getRawIndices() const
-{
-    llassert(!isState(BACKLIST));
-
-    return &mDrawPoolp->mIndices[mIndicesIndex];
-}
-
-
-inline void LLFace::bindTexture(S32 stage) const
-{
-    if (mTexture)
-    {
-        mTexture->bindTexture(stage);
-    }
-    else
-    {
-        LLImageGL::unbindTexture(stage, GL_TEXTURE_2D);
-    }
-}
-
-#endif
diff --git a/indra/newview/llfasttimerview.cpp b/indra/newview/llfasttimerview.cpp
index 4851f65c48..7391209935 100644
--- a/indra/newview/llfasttimerview.cpp
+++ b/indra/newview/llfasttimerview.cpp
@@ -59,15 +59,15 @@
 
 using namespace LLTrace;
 
-static const S32 MAX_VISIBLE_HISTORY = 12;
-static const S32 LINE_GRAPH_HEIGHT = 240;
-static const S32 MIN_BAR_HEIGHT = 3;
-static const S32 RUNNING_AVERAGE_WIDTH = 100;
-static const S32 NUM_FRAMES_HISTORY = 200;
+static constexpr S32 MAX_VISIBLE_HISTORY = 12;
+static constexpr S32 LINE_GRAPH_HEIGHT = 240;
+static constexpr S32 MIN_BAR_HEIGHT = 3;
+static constexpr S32 RUNNING_AVERAGE_WIDTH = 100;
+static constexpr S32 NUM_FRAMES_HISTORY = 200;
 
 std::vector<BlockTimerStatHandle*> ft_display_idx; // line of table entry for display purposes (for collapse)
 
-BOOL LLFastTimerView::sAnalyzePerformance = FALSE;
+bool LLFastTimerView::sAnalyzePerformance = false;
 
 S32 get_depth(const BlockTimerStatHandle* blockp)
 {
@@ -126,16 +126,16 @@ void LLFastTimerView::setPauseState(bool pause_state)
     mPauseHistory = pause_state;
 }
 
-BOOL LLFastTimerView::postBuild()
+bool LLFastTimerView::postBuild()
 {
     LLButton& pause_btn = getChildRef<LLButton>("pause_btn");
     mScrollBar = getChild<LLScrollbar>("scroll_vert");
 
     pause_btn.setCommitCallback(boost::bind(&LLFastTimerView::onPause, this));
-    return TRUE;
+    return true;
 }
 
-BOOL LLFastTimerView::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLFastTimerView::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     if (mHoverTimer )
     {
@@ -148,14 +148,14 @@ BOOL LLFastTimerView::handleRightMouseDown(S32 x, S32 y, MASK mask)
         {
             mHoverTimer->getParent()->getTreeNode().mCollapsed = true;
         }
-        return TRUE;
+        return true;
     }
     else if (mBarRect.pointInRect(x, y))
     {
         S32 bar_idx = MAX_VISIBLE_HISTORY - ((y - mBarRect.mBottom) * (MAX_VISIBLE_HISTORY + 2) / mBarRect.getHeight());
         bar_idx = llclamp(bar_idx, 0, MAX_VISIBLE_HISTORY);
         mStatsIndex = mScrollIndex + bar_idx;
-        return TRUE;
+        return true;
     }
     return LLFloater::handleRightMouseDown(x, y, mask);
 }
@@ -172,7 +172,7 @@ BlockTimerStatHandle* LLFastTimerView::getLegendID(S32 y)
     return NULL;
 }
 
-BOOL LLFastTimerView::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLFastTimerView::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     for(LLTrace::block_timer_tree_df_iterator_t it = LLTrace::begin_block_timer_tree_df(FTM_FRAME);
         it != LLTrace::end_block_timer_tree_df();
@@ -180,10 +180,10 @@ BOOL LLFastTimerView::handleDoubleClick(S32 x, S32 y, MASK mask)
     {
         (*it)->getTreeNode().mCollapsed = false;
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLFastTimerView::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLFastTimerView::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (x < mScrollBar->getRect().mLeft)
     {
@@ -201,13 +201,13 @@ BOOL LLFastTimerView::handleMouseDown(S32 x, S32 y, MASK mask)
     else if (mGraphRect.pointInRect(x, y))
     {
         gFocusMgr.setMouseCapture(this);
-        return TRUE;
+        return true;
     }
 
     return LLFloater::handleMouseDown(x, y, mask);
 }
 
-BOOL LLFastTimerView::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLFastTimerView::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if (hasMouseCapture())
     {
@@ -216,14 +216,14 @@ BOOL LLFastTimerView::handleMouseUp(S32 x, S32 y, MASK mask)
     return LLFloater::handleMouseUp(x, y, mask);;
 }
 
-BOOL LLFastTimerView::handleHover(S32 x, S32 y, MASK mask)
+bool LLFastTimerView::handleHover(S32 x, S32 y, MASK mask)
 {
     if (hasMouseCapture())
     {
         F32 lerp = llclamp(1.f - (F32) (x - mGraphRect.mLeft) / (F32) mGraphRect.getWidth(), 0.f, 1.f);
         mScrollIndex = ll_round( lerp * (F32)(mRecording.getNumRecordedPeriods() - MAX_VISIBLE_HISTORY));
         mScrollIndex = llclamp( mScrollIndex, 0, (S32)mRecording.getNumRecordedPeriods());
-        return TRUE;
+        return true;
     }
     mHoverTimer = NULL;
     mHoverID = NULL;
@@ -238,7 +238,7 @@ BOOL LLFastTimerView::handleHover(S32 x, S32 y, MASK mask)
                                 MAX_VISIBLE_HISTORY);
         if (mHoverBarIndex == 0)
         {
-            return TRUE;
+            return true;
         }
         else if (mHoverBarIndex < 0)
         {
@@ -249,7 +249,7 @@ BOOL LLFastTimerView::handleHover(S32 x, S32 y, MASK mask)
 
         TimerBar* hover_bar = NULL;
         F32Seconds mouse_time_offset = ((F32)(x - mBarRect.mLeft) / (F32)mBarRect.getWidth()) * mTotalTimeDisplay;
-        for (int bar_index = 0, end_index = LLTrace::BlockTimerStatHandle::instance_tracker_t::instanceCount();
+        for (size_t bar_index = 0, end_index = LLTrace::BlockTimerStatHandle::instance_tracker_t::instanceCount();
             bar_index < end_index;
             ++bar_index)
         {
@@ -314,7 +314,7 @@ static std::string get_tooltip(BlockTimerStatHandle& timer, S32 history_index, P
     return tooltip;
 }
 
-BOOL LLFastTimerView::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLFastTimerView::handleToolTip(S32 x, S32 y, MASK mask)
 {
     if(mPauseHistory && mBarRect.pointInRect(x, y))
     {
@@ -331,7 +331,7 @@ BOOL LLFastTimerView::handleToolTip(S32 x, S32 y, MASK mask)
                 .sticky_rect(screen_rect)
                 .delay_time(0.f));
 
-            return TRUE;
+            return true;
         }
     }
     else
@@ -344,7 +344,7 @@ BOOL LLFastTimerView::handleToolTip(S32 x, S32 y, MASK mask)
             {
                 LLToolTipMgr::instance().show(get_tooltip(*idp, 0, mRecording));
 
-                return TRUE;
+                return true;
             }
         }
     }
@@ -352,7 +352,7 @@ BOOL LLFastTimerView::handleToolTip(S32 x, S32 y, MASK mask)
     return LLFloater::handleToolTip(x, y, mask);
 }
 
-BOOL LLFastTimerView::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLFastTimerView::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if (x < mBarRect.mLeft)
     {
@@ -366,7 +366,7 @@ BOOL LLFastTimerView::handleScrollWheel(S32 x, S32 y, S32 clicks)
                             0,
                             llmin((S32)mRecording.getNumRecordedPeriods(), (S32)mRecording.getNumRecordedPeriods() - MAX_VISIBLE_HISTORY));
     }
-    return TRUE;
+    return true;
 }
 
 static BlockTimerStatHandle FTM_RENDER_TIMER("Timers");
@@ -440,7 +440,7 @@ void LLFastTimerView::onOpen(const LLSD& key)
 
 void LLFastTimerView::onClose(bool app_quitting)
 {
-    setVisible(FALSE);
+    setVisible(false);
 }
 
 void saveChart(const std::string& label, const char* suffix, LLImageRaw* scratch)
@@ -448,6 +448,8 @@ void saveChart(const std::string& label, const char* suffix, LLImageRaw* scratch
     // disable use of glReadPixels which messes up nVidia nSight graphics debugging
     if (!LLRender::sNsightDebugSupport)
     {
+        LLImageDataSharedLock lock(scratch);
+
         //read result back into raw image
         glReadPixels(0, 0, 1024, 512, GL_RGB, GL_UNSIGNED_BYTE, scratch->getData());
 
@@ -704,7 +706,7 @@ void LLFastTimerView::exportCharts(const std::string& base, const std::string& t
 
         gGL.color3fv(base_col.mV);
         U32 count = 0;
-        U32 total_count = base_execution.size();
+        U32 total_count = static_cast<U32>(base_execution.size());
 
         last_p.clear();
 
@@ -726,7 +728,7 @@ void LLFastTimerView::exportCharts(const std::string& base, const std::string& t
             LLGLEnable blend(GL_BLEND);
             gGL.color3fv(cur_col.mV);
             count = 0;
-            total_count = cur_execution.size();
+            total_count = static_cast<U32>(cur_execution.size());
 
             for (std::vector<LLSD::Real>::iterator iter = cur_execution.begin(); iter != cur_execution.end(); ++iter)
             {
@@ -1018,7 +1020,7 @@ void LLFastTimerView::drawLineGraph()
 
     //highlight visible range
     {
-        S32 first_frame = mRecording.getNumRecordedPeriods() - mScrollIndex;
+        S32 first_frame = static_cast<S32>(mRecording.getNumRecordedPeriods()) - mScrollIndex;
         S32 last_frame = first_frame - MAX_VISIBLE_HISTORY;
 
         F32 frame_delta = ((F32) (mGraphRect.getWidth()))/(mRecording.getNumRecordedPeriods()-1);
@@ -1081,7 +1083,7 @@ void LLFastTimerView::drawLineGraph()
         F32 time_scale_factor = (F32)mGraphRect.getHeight() / max_time.value();
         F32 hz_scale_factor = (F32) mGraphRect.getHeight() / (1.f / max_time.value());
 
-        for (U32 j = mRecording.getNumRecordedPeriods();
+        for (U32 j = static_cast<U32>(mRecording.getNumRecordedPeriods());
             j > 0;
             j--)
         {
@@ -1274,7 +1276,7 @@ void LLFastTimerView::drawLegend()
             }
 
             x += dx;
-            BOOL is_child_of_hover_item = (idp == mHoverID);
+            bool is_child_of_hover_item = (idp == mHoverID);
             BlockTimerStatHandle* next_parent = idp->getParent();
             while(!is_child_of_hover_item && next_parent)
             {
@@ -1383,31 +1385,31 @@ void LLFastTimerView::drawBorders( S32 y, const S32 x_start, S32 bar_height, S32
         S32 by = y + 6 + (S32)LLFontGL::getFontMonospace()->getLineHeight();
 
         //heading
-        gl_rect_2d(x_start-5, by, getRect().getWidth()-5, y+5, LLColor4::grey, FALSE);
+        gl_rect_2d(x_start-5, by, getRect().getWidth()-5, y+5, LLColor4::grey, false);
 
         //tree view
-        gl_rect_2d(5, by, x_start-10, 5, LLColor4::grey, FALSE);
+        gl_rect_2d(5, by, x_start-10, 5, LLColor4::grey, false);
 
         by = y + 5;
         //average bar
-        gl_rect_2d(x_start-5, by, getRect().getWidth()-5, by-bar_height-dy-5, LLColor4::grey, FALSE);
+        gl_rect_2d(x_start-5, by, getRect().getWidth()-5, by-bar_height-dy-5, LLColor4::grey, false);
 
         by -= bar_height*2+dy;
 
         //current frame bar
-        gl_rect_2d(x_start-5, by, getRect().getWidth()-5, by-bar_height-dy-2, LLColor4::grey, FALSE);
+        gl_rect_2d(x_start-5, by, getRect().getWidth()-5, by-bar_height-dy-2, LLColor4::grey, false);
 
         by -= bar_height+dy+1;
 
         //history bars
-        gl_rect_2d(x_start-5, by, getRect().getWidth()-5, LINE_GRAPH_HEIGHT-bar_height-dy-2, LLColor4::grey, FALSE);
+        gl_rect_2d(x_start-5, by, getRect().getWidth()-5, LINE_GRAPH_HEIGHT-bar_height-dy-2, LLColor4::grey, false);
 
         by = LINE_GRAPH_HEIGHT-dy;
 
         //line graph
         //mGraphRect = LLRect(x_start-5, by, getRect().getWidth()-5, 5);
 
-        gl_rect_2d(mGraphRect, FALSE);
+        gl_rect_2d(mGraphRect, false);
     }
 }
 
@@ -1649,7 +1651,7 @@ S32 LLFastTimerView::drawBar(LLRect bar_rect, TimerBarRow& row, S32 image_width,
     bool children_visible = visible && !time_block->getTreeNode().mCollapsed;
 
     bar_index++;
-    const U32 num_bars = LLTrace::BlockTimerStatHandle::instance_tracker_t::instanceCount();
+    const auto num_bars = LLTrace::BlockTimerStatHandle::instance_tracker_t::instanceCount();
     if (bar_index < num_bars && row.mBars[bar_index].mFirstChild)
     {
         bool is_last = false;
diff --git a/indra/newview/llfasttimerview.h b/indra/newview/llfasttimerview.h
index f9050bd926..e0ef52f166 100644
--- a/indra/newview/llfasttimerview.h
+++ b/indra/newview/llfasttimerview.h
@@ -40,9 +40,9 @@ class LLFastTimerView : public LLFloater
 public:
     LLFastTimerView(const LLSD&);
     ~LLFastTimerView();
-    BOOL postBuild();
+    bool postBuild();
 
-    static BOOL sAnalyzePerformance;
+    static bool sAnalyzePerformance;
 
     static void outputAllMetrics();
     static void doAnalysis(std::string baseline, std::string target, std::string output);
@@ -55,13 +55,13 @@ private:
 
 public:
 
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
-    virtual BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL handleToolTip(S32 x, S32 y, MASK mask);
-    virtual BOOL handleScrollWheel(S32 x, S32 y, S32 clicks);
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleDoubleClick(S32 x, S32 y, MASK mask);
+    virtual bool handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool handleHover(S32 x, S32 y, MASK mask);
+    virtual bool handleToolTip(S32 x, S32 y, MASK mask);
+    virtual bool handleScrollWheel(S32 x, S32 y, S32 clicks);
     virtual void draw();
     virtual void onOpen(const LLSD& key);
     virtual void onClose(bool app_quitting);
diff --git a/indra/newview/llfavoritesbar.cpp b/indra/newview/llfavoritesbar.cpp
index d3c9cd26d7..377710c170 100644
--- a/indra/newview/llfavoritesbar.cpp
+++ b/indra/newview/llfavoritesbar.cpp
@@ -79,7 +79,7 @@ public:
     }
 
     void setLandmarkID(const LLUUID& id) { mLandmarkID = id; }
-    const LLUUID& getLandmarkId() const { return mLandmarkID; }
+    const LLUUID& getLandmarkID() const { return mLandmarkID; }
 
     const std::string& getName()
     {
@@ -160,7 +160,7 @@ class LLFavoriteLandmarkButton : public LLButton
 {
 public:
 
-    BOOL handleToolTip(S32 x, S32 y, MASK mask)
+    bool handleToolTip(S32 x, S32 y, MASK mask)
     {
         std::string region_name = mLandmarkInfoGetter.getName();
 
@@ -176,10 +176,10 @@ public:
 
             LLToolTipMgr::instance().show(params);
         }
-        return TRUE;
+        return true;
     }
 
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask)
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask)
     {
         LLFavoritesBarCtrl* fb = dynamic_cast<LLFavoritesBarCtrl*>(getParent());
 
@@ -192,7 +192,7 @@ public:
     }
 
     void setLandmarkID(const LLUUID& id){ mLandmarkInfoGetter.setLandmarkID(id); }
-    const LLUUID& getLandmarkId() const { return mLandmarkInfoGetter.getLandmarkId(); }
+    const LLUUID& getLandmarkID() const { return mLandmarkInfoGetter.getLandmarkID(); }
 
     void onMouseEnter(S32 x, S32 y, MASK mask)
     {
@@ -224,7 +224,7 @@ private:
 class LLFavoriteLandmarkMenuItem : public LLMenuItemCallGL
 {
 public:
-    BOOL handleToolTip(S32 x, S32 y, MASK mask)
+    bool handleToolTip(S32 x, S32 y, MASK mask)
     {
         std::string region_name = mLandmarkInfoGetter.getName();
         if (!region_name.empty())
@@ -234,33 +234,34 @@ public:
             params.sticky_rect = calcScreenRect();
             LLToolTipMgr::instance().show(params);
         }
-        return TRUE;
+        return true;
     }
 
-    void setLandmarkID(const LLUUID& id){ mLandmarkInfoGetter.setLandmarkID(id); }
+    const LLUUID& getLandmarkID() const { return mLandmarkInfoGetter.getLandmarkID(); }
+    void setLandmarkID(const LLUUID& id) { mLandmarkInfoGetter.setLandmarkID(id); }
 
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask)
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask)
     {
         if (mMouseDownSignal)
             (*mMouseDownSignal)(this, x, y, mask);
         return LLMenuItemCallGL::handleMouseDown(x, y, mask);
     }
 
-    virtual BOOL handleMouseUp(S32 x, S32 y, MASK mask)
+    virtual bool handleMouseUp(S32 x, S32 y, MASK mask)
     {
         if (mMouseUpSignal)
             (*mMouseUpSignal)(this, x, y, mask);
         return LLMenuItemCallGL::handleMouseUp(x, y, mask);
     }
 
-    virtual BOOL handleHover(S32 x, S32 y, MASK mask)
+    virtual bool handleHover(S32 x, S32 y, MASK mask)
     {
         if (fb)
         {
             fb->handleHover(x, y, mask);
         }
 
-        return TRUE;
+        return true;
     }
 
     void initFavoritesBarPointer(LLFavoritesBarCtrl* fb) { this->fb = fb; }
@@ -278,21 +279,50 @@ private:
 /**
  * This class was introduced just for fixing the following issue:
  * EXT-836 Nav bar: Favorites overflow menu passes left-mouse click through.
- * We must explicitly handle drag and drop event by returning TRUE
+ * We must explicitly handle drag and drop event by returning true
  * because otherwise LLToolDragAndDrop will initiate drag and drop operation
  * with the world.
  */
 class LLFavoriteLandmarkToggleableMenu : public LLToggleableMenu
 {
 public:
-    virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
-                                   EDragAndDropType cargo_type,
-                                   void* cargo_data,
-                                   EAcceptance* accept,
-                                   std::string& tooltip_msg)
+    // virtual
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop, EDragAndDropType cargo_type,
+        void* cargo_data, EAcceptance* accept, std::string& tooltip_msg) override
+    {
+        mToolbar->handleDragAndDropToMenu(x, y, mask, drop, cargo_type, cargo_data, accept, tooltip_msg);
+        return true;
+    }
+
+    // virtual
+    bool handleHover(S32 x, S32 y, MASK mask) override
+    {
+        mIsHovering = true;
+        LLToggleableMenu::handleHover(x, y, mask);
+        mIsHovering = false;
+        return true;
+    }
+
+    // virtual
+    void setVisible(bool visible) override
     {
-        *accept = ACCEPT_NO;
-        return TRUE;
+        // Avoid of hiding the menu during hovering
+        if (visible || !mIsHovering)
+        {
+            LLToggleableMenu::setVisible(visible);
+        }
+    }
+
+    void setToolbar(LLFavoritesBarCtrl* toolbar)
+    {
+        mToolbar = toolbar;
+    }
+
+    ~LLFavoriteLandmarkToggleableMenu()
+    {
+        // Enable subsequent setVisible(false)
+        mIsHovering = false;
+        setVisible(false);
     }
 
 protected:
@@ -301,6 +331,10 @@ protected:
     {
     }
 
+private:
+    LLFavoritesBarCtrl* mToolbar { nullptr };
+    bool mIsHovering { false };
+
     friend class LLUICtrlFactory;
 };
 
@@ -323,8 +357,8 @@ public:
             LLFavoritesBarCtrl::sWaitingForCallabck = 0.f;
             LLFavoritesOrderStorage::instance().setSortIndex(item, mSortField);
 
-            item->setComplete(TRUE);
-            item->updateServer(FALSE);
+            item->setComplete(true);
+            item->updateServer(false);
 
             gInventory.updateItem(item);
             gInventory.notifyObservers();
@@ -382,12 +416,13 @@ LLFavoritesBarCtrl::LLFavoritesBarCtrl(const LLFavoritesBarCtrl::Params& p)
     mOverflowMenuHandle(),
     mContextMenuHandle(),
     mImageDragIndication(p.image_drag_indication),
-    mShowDragMarker(FALSE),
+    mShowDragMarker(false),
     mLandingTab(NULL),
     mLastTab(NULL),
     mItemsListDirty(false),
     mUpdateDropDownItems(true),
     mRestoreOverflowMenu(false),
+    mDragToOverflowMenu(false),
     mGetPrevItems(true),
     mMouseX(0),
     mMouseY(0),
@@ -422,20 +457,19 @@ LLFavoritesBarCtrl::~LLFavoritesBarCtrl()
 {
     gInventory.removeObserver(this);
 
-    if (mOverflowMenuHandle.get()) mOverflowMenuHandle.get()->die();
-    if (mContextMenuHandle.get()) mContextMenuHandle.get()->die();
+    if (mOverflowMenuHandle.get())
+        mOverflowMenuHandle.get()->die();
+    if (mContextMenuHandle.get())
+        mContextMenuHandle.get()->die();
 }
 
-BOOL LLFavoritesBarCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
-                                   EDragAndDropType cargo_type,
-                                   void* cargo_data,
-                                   EAcceptance* accept,
-                                   std::string& tooltip_msg)
+bool LLFavoritesBarCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
+    EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept, std::string& tooltip_msg)
 {
     *accept = ACCEPT_NO;
 
     LLToolDragAndDrop::ESource source = LLToolDragAndDrop::getInstance()->getSource();
-    if (LLToolDragAndDrop::SOURCE_AGENT != source && LLToolDragAndDrop::SOURCE_LIBRARY != source) return FALSE;
+    if (LLToolDragAndDrop::SOURCE_AGENT != source && LLToolDragAndDrop::SOURCE_LIBRARY != source) return false;
 
     switch (cargo_type)
     {
@@ -456,26 +490,52 @@ BOOL LLFavoritesBarCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
             // Copy the item into the favorites folder (if it's not already there).
             LLInventoryItem *item = (LLInventoryItem *)cargo_data;
 
-            if (LLFavoriteLandmarkButton* dest = dynamic_cast<LLFavoriteLandmarkButton*>(findChildByLocalCoords(x, y)))
+            if (mDragToOverflowMenu)
             {
-                setLandingTab(dest);
+                LLView* overflow_menu = mOverflowMenuHandle.get();
+                if (overflow_menu && !overflow_menu->isDead() && overflow_menu->getVisible())
+                {
+                    overflow_menu->handleHover(x, y, mask);
+                }
             }
-            else if (mLastTab && (x >= mLastTab->getRect().mRight))
+            else // Drag to the toolbar itself
             {
-                /*
-                 * the condition dest == NULL can be satisfied not only in the case
-                 * of dragging to the right from the last tab of the favbar. there is a
-                 * small gap between each tab. if the user drags something exactly there
-                 * then mLandingTab will be set to NULL and the dragged item will be pushed
-                 * to the end of the favorites bar. this is incorrect behavior. that's why
-                 * we need an additional check which excludes the case described previously
-                 * making sure that the mouse pointer is beyond the last tab.
-                 */
-                setLandingTab(NULL);
+                // Drag to a landmark button?
+                if (LLFavoriteLandmarkButton* dest = dynamic_cast<LLFavoriteLandmarkButton*>(findChildByLocalCoords(x, y)))
+                {
+                    setLandingTab(dest);
+                }
+                else
+                {
+                    // Drag to the "More" button?
+                    if (mMoreTextBox && mMoreTextBox->getVisible() && mMoreTextBox->getRect().pointInRect(x, y))
+                    {
+                        LLView* overflow_menu = mOverflowMenuHandle.get();
+                        if (!overflow_menu || overflow_menu->isDead() || !overflow_menu->getVisible())
+                        {
+                            showDropDownMenu();
+                        }
+                    }
+
+                    // Drag to the right of the last landmark button?
+                    if (mLastTab && (x >= mLastTab->getRect().mRight))
+                    {
+                        /*
+                         * the condition dest == NULL can be satisfied not only in the case
+                         * of dragging to the right from the last tab of the favbar. there is a
+                         * small gap between each tab. if the user drags something exactly there
+                         * then mLandingTab will be set to NULL and the dragged item will be pushed
+                         * to the end of the favorites bar. this is incorrect behavior. that's why
+                         * we need an additional check which excludes the case described previously
+                         * making sure that the mouse pointer is beyond the last tab.
+                         */
+                        setLandingTab(NULL);
+                    }
+                }
             }
 
-            // check if we are dragging an existing item from the favorites bar
-            bool existing_drop = false;
+            // Check whether we are dragging an existing item from the favorites bar
+            bool existing_item = false;
             if (item && mDragItemId == item->getUUID())
             {
                 // There is a chance of mDragItemId being obsolete
@@ -483,21 +543,19 @@ BOOL LLFavoritesBarCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
                 // results in viewer not geting a 'mouse up' signal
                 for (LLInventoryModel::item_array_t::iterator i = mItems.begin(); i != mItems.end(); ++i)
                 {
-                    LLViewerInventoryItem* currItem = *i;
-
-                    if (currItem->getUUID() == mDragItemId)
+                    if ((*i)->getUUID() == mDragItemId)
                     {
-                        existing_drop = true;
+                        existing_item = true;
                         break;
                     }
                 }
             }
 
-            if (existing_drop)
+            if (existing_item)
             {
                 *accept = ACCEPT_YES_SINGLE;
 
-                showDragMarker(TRUE);
+                showDragMarker(true);
 
                 if (drop)
                 {
@@ -515,7 +573,7 @@ BOOL LLFavoritesBarCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
 
                 *accept = ACCEPT_YES_COPY_MULTI;
 
-                showDragMarker(TRUE);
+                showDragMarker(true);
 
                 if (drop)
                 {
@@ -533,85 +591,59 @@ BOOL LLFavoritesBarCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
         break;
     }
 
-    return TRUE;
+    return true;
+}
+
+bool LLFavoritesBarCtrl::handleDragAndDropToMenu(S32 x, S32 y, MASK mask, bool drop,
+    EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept, std::string& tooltip_msg)
+{
+    mDragToOverflowMenu = true;
+    bool handled = handleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data, accept, tooltip_msg);
+    mDragToOverflowMenu = false;
+    return handled;
 }
 
 void LLFavoritesBarCtrl::handleExistingFavoriteDragAndDrop(S32 x, S32 y)
 {
-    if (mItems.empty())
-    {
-        // Isn't supposed to be empty
+    if (LL_UNLIKELY(mItems.empty()))
         return;
-    }
 
-    // Identify the button hovered and the side to drop
-    LLFavoriteLandmarkButton* dest = dynamic_cast<LLFavoriteLandmarkButton*>(mLandingTab);
-    bool insert_before = true;
-    if (!dest)
-    {
-        insert_before = false;
-        dest = dynamic_cast<LLFavoriteLandmarkButton*>(mLastTab);
-    }
+    LLUUID target_id;
+    bool insert_before = false;
+    if (!findDragAndDropTarget(target_id, insert_before, x, y))
+        return;
 
     // There is no need to handle if an item was dragged onto itself
-    if (dest && dest->getLandmarkId() == mDragItemId)
-    {
+    if (target_id == mDragItemId)
         return;
-    }
-
-    // Insert the dragged item in the right place
-    if (dest)
-    {
-        LLInventoryModel::updateItemsOrder(mItems, mDragItemId, dest->getLandmarkId(), insert_before);
-    }
-    else
-    {
-        // This can happen when the item list is empty
-        mItems.push_back(gInventory.getItem(mDragItemId));
-    }
 
+    // Move the dragged item to the right place in the array
+    LLInventoryModel::updateItemsOrder(mItems, mDragItemId, target_id, insert_before);
     LLFavoritesOrderStorage::instance().saveItemsOrder(mItems);
 
-    LLToggleableMenu* menu = (LLToggleableMenu*) mOverflowMenuHandle.get();
-
-    if (menu && menu->getVisible())
+    LLView* menu = mOverflowMenuHandle.get();
+    if (menu && !menu->isDead() && menu->getVisible())
     {
-        menu->setVisible(FALSE);
-        showDropDownMenu();
+        updateOverflowMenuItems();
+        positionAndShowOverflowMenu();
     }
 }
 
 void LLFavoritesBarCtrl::handleNewFavoriteDragAndDrop(LLInventoryItem *item, const LLUUID& favorites_id, S32 x, S32 y)
 {
     // Identify the button hovered and the side to drop
-    LLFavoriteLandmarkButton* dest = NULL;
-    bool insert_before = true;
-    if (!mItems.empty())
-    {
-        // [MAINT-2386] When multiple landmarks are selected and dragged onto an empty favorites bar,
-        //      the viewer would crash when casting mLastTab below, as mLastTab is still null when the
-        //      second landmark is being added.
-        //      To ensure mLastTab is valid, we need to call updateButtons() at the end of this function
-        dest = dynamic_cast<LLFavoriteLandmarkButton*>(mLandingTab);
-        if (!dest)
-        {
-            insert_before = false;
-            dest = dynamic_cast<LLFavoriteLandmarkButton*>(mLastTab);
-        }
-    }
-
+    LLUUID target_id;
+    bool insert_before = false;
     // There is no need to handle if an item was dragged onto itself
-    if (dest && dest->getLandmarkId() == mDragItemId)
-    {
+    if (findDragAndDropTarget(target_id, insert_before, x, y) && (target_id == mDragItemId))
         return;
-    }
 
     LLPointer<LLViewerInventoryItem> viewer_item = new LLViewerInventoryItem(item);
 
-    // Insert the dragged item in the right place
-    if (dest)
+    // Insert the dragged item to the right place
+    if (target_id.notNull())
     {
-        insertItem(mItems, dest->getLandmarkId(), viewer_item, insert_before);
+        insertItem(mItems, target_id, viewer_item, insert_before);
     }
     else
     {
@@ -638,8 +670,8 @@ void LLFavoritesBarCtrl::handleNewFavoriteDragAndDrop(LLInventoryItem *item, con
         {
             LLFavoritesOrderStorage::instance().setSortIndex(currItem, ++sortField);
 
-            currItem->setComplete(TRUE);
-            currItem->updateServer(FALSE);
+            currItem->setComplete(true);
+            currItem->updateServer(false);
 
             gInventory.updateItem(currItem);
         }
@@ -671,9 +703,74 @@ void LLFavoritesBarCtrl::handleNewFavoriteDragAndDrop(LLInventoryItem *item, con
     //      landmarks to an empty favorites bar.
     updateButtons();
 
+    LLView* overflow_menu = mOverflowMenuHandle.get();
+    if (overflow_menu && !overflow_menu->isDead() && overflow_menu->getVisible())
+    {
+        updateOverflowMenuItems();
+        positionAndShowOverflowMenu();
+    }
+
     LL_INFOS("FavoritesBar") << "Copied inventory item #" << item->getUUID() << " to favorites." << LL_ENDL;
 }
 
+bool LLFavoritesBarCtrl::findDragAndDropTarget(LLUUID& target_id, bool& insert_before, S32 x, S32 y)
+{
+    if (mItems.empty())
+        return false;
+
+    if (mDragToOverflowMenu)
+    {
+        LLView* overflow_menu = mOverflowMenuHandle.get();
+        if (LL_UNLIKELY(!overflow_menu || overflow_menu->isDead() || !overflow_menu->getVisible()))
+            return false;
+
+        // Identify the menu item hovered and the side to drop
+        LLFavoriteLandmarkMenuItem* target_item = dynamic_cast<LLFavoriteLandmarkMenuItem*>(overflow_menu->childFromPoint(x, y));
+        if (target_item)
+        {
+            insert_before = true;
+        }
+        else
+        {
+            // Choose the bottom landmark menu item
+            auto begin = overflow_menu->getChildList()->begin();
+            auto end = overflow_menu->getChildList()->end();
+            auto check = [](const LLView* child) -> bool
+                {
+                    return dynamic_cast<const LLFavoriteLandmarkMenuItem*>(child);
+                };
+            // Menu items are placed in the backward order, so the bottom goes first
+            auto it = std::find_if(begin, end, check);
+            if (LL_UNLIKELY(it == end))
+                return false;
+            target_item = (LLFavoriteLandmarkMenuItem*)*it;
+            insert_before = false;
+        }
+        target_id = target_item->getLandmarkID();
+    }
+    else
+    {
+        // Identify the button hovered and the side to drop
+        LLFavoriteLandmarkButton* hovered_button = dynamic_cast<LLFavoriteLandmarkButton*>(mLandingTab);
+        if (hovered_button)
+        {
+            insert_before = true;
+        }
+        else
+        {
+            // Choose the right landmark button
+            hovered_button = dynamic_cast<LLFavoriteLandmarkButton*>(mLastTab);
+            if (LL_UNLIKELY(!hovered_button))
+                return false;
+
+            insert_before = false;
+        }
+        target_id = hovered_button->getLandmarkID();
+    }
+
+    return true;
+}
+
 //virtual
 void LLFavoritesBarCtrl::changed(U32 mask)
 {
@@ -718,7 +815,7 @@ void LLFavoritesBarCtrl::changed(U32 mask)
 }
 
 //virtual
-void LLFavoritesBarCtrl::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLFavoritesBarCtrl::reshape(S32 width, S32 height, bool called_from_parent)
 {
     S32 delta_width = width - getRect().getWidth();
     S32 delta_height = height - getRect().getHeight();
@@ -750,7 +847,7 @@ void LLFavoritesBarCtrl::draw()
             mImageDragIndication->draw(rect.mRight, rect.getHeight(), w, h);
         }
         // Once drawn, mark this false so we won't draw it again (unless we hit the favorite bar again)
-        mShowDragMarker = FALSE;
+        mShowDragMarker = false;
     }
     if (mItemsChangedTimer.getStarted())
     {
@@ -837,12 +934,12 @@ void LLFavoritesBarCtrl::updateButtons(bool force_update)
 
     if(mItems.empty())
     {
-        mBarLabel->setVisible(TRUE);
+        mBarLabel->setVisible(true);
         mLastTab = NULL;
     }
     else
     {
-        mBarLabel->setVisible(FALSE);
+        mBarLabel->setVisible(false);
     }
     const child_list_t* childs = getChildList();
     child_list_const_iter_t child_it = childs->begin();
@@ -859,7 +956,7 @@ void LLFavoritesBarCtrl::updateButtons(bool force_update)
                 if (item)
                 {
                     // an child's order  and mItems  should be same
-                    if (button->getLandmarkId() != item->getUUID() // sort order has been changed
+                    if (button->getLandmarkID() != item->getUUID() // sort order has been changed
                         || button->getLabelSelected() != item->getName()) // favorite's name has been changed
                     {
                         break;
@@ -933,11 +1030,7 @@ void LLFavoritesBarCtrl::updateButtons(bool force_update)
         {
             // mMoreTextBox was removed, so LLFavoriteLandmarkButtons
             // should be the only ones in the list
-            LLFavoriteLandmarkButton* button = dynamic_cast<LLFavoriteLandmarkButton*> (childs->back());
-            if (button)
-            {
-                mLastTab = button;
-            }
+            mLastTab = dynamic_cast<LLFavoriteLandmarkButton*>(childs->back());
         }
 
         mFirstDropDownItem = j;
@@ -945,25 +1038,23 @@ void LLFavoritesBarCtrl::updateButtons(bool force_update)
         if (mFirstDropDownItem < mItems.size())
         {
             // if updateButton had been called it means:
-            //or there are some new favorites, or width had been changed
+            // or there are some new favorites, or width had been changed
             // so if we need to display chevron button,  we must update dropdown items too.
             mUpdateDropDownItems = true;
             S32 buttonHGap = button_params.rect.left; // default value
-            LLRect rect;
             // Chevron button should stay right aligned
-            rect.setOriginAndSize(getRect().mRight - mMoreTextBox->getRect().getWidth() - buttonHGap, 0,
-                    mMoreTextBox->getRect().getWidth(),
-                    mMoreTextBox->getRect().getHeight());
+            LLRect rect(mMoreTextBox->getRect());
+            rect.translate(getRect().mRight - rect.mRight - buttonHGap, 0);
 
             addChild(mMoreTextBox);
             mMoreTextBox->setRect(rect);
-            mMoreTextBox->setVisible(TRUE);
+            mMoreTextBox->setVisible(true);
         }
         // Update overflow menu
         LLToggleableMenu* overflow_menu = static_cast <LLToggleableMenu*> (mOverflowMenuHandle.get());
         if (overflow_menu && overflow_menu->getVisible() && (overflow_menu->getItemCount() != mDropDownItemsCount))
         {
-            overflow_menu->setVisible(FALSE);
+            overflow_menu->setVisible(false);
             if (mUpdateDropDownItems)
             {
                 showDropDownMenu();
@@ -1027,7 +1118,7 @@ LLButton* LLFavoritesBarCtrl::createButton(const LLPointer<LLViewerInventoryItem
 }
 
 
-BOOL LLFavoritesBarCtrl::postBuild()
+bool LLFavoritesBarCtrl::postBuild()
 {
     // make the popup menu available
     LLMenuGL* menu = LLUICtrlFactory::getInstance()->createFromFile<LLMenuGL>("menu_favorites.xml", gMenuHolder, LLViewerMenuHolderGL::child_registry_t::instance());
@@ -1038,14 +1129,14 @@ BOOL LLFavoritesBarCtrl::postBuild()
     menu->setBackgroundColor(LLUIColorTable::instance().getColor("MenuPopupBgColor"));
     mContextMenuHandle = menu->getHandle();
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLFavoritesBarCtrl::collectFavoriteItems(LLInventoryModel::item_array_t &items)
+bool LLFavoritesBarCtrl::collectFavoriteItems(LLInventoryModel::item_array_t &items)
 {
 
     if (mFavoriteFolderId.isNull())
-        return FALSE;
+        return false;
 
 
     LLInventoryModel::cat_array_t cats;
@@ -1065,7 +1156,7 @@ BOOL LLFavoritesBarCtrl::collectFavoriteItems(LLInventoryModel::item_array_t &it
         LLFavoritesOrderStorage::instance().mSaveOnExit = true;
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLFavoritesBarCtrl::onMoreTextBoxClicked()
@@ -1086,14 +1177,16 @@ void LLFavoritesBarCtrl::showDropDownMenu()
     {
         if (mUpdateDropDownItems)
         {
-            updateMenuItems(menu);
+            updateOverflowMenuItems();
+        }
+        else
+        {
+            menu->buildDrawLabels();
         }
 
-        menu->buildDrawLabels();
         menu->updateParent(LLMenuGL::sMenuContainer);
         menu->setButtonRect(mMoreTextBox->getRect(), this);
-        positionAndShowMenu(menu);
-        mDropDownItemsCount = menu->getItemCount();
+        positionAndShowOverflowMenu();
     }
 }
 
@@ -1107,12 +1200,14 @@ void LLFavoritesBarCtrl::createOverflowMenu()
     menu_p.max_scrollable_items = 10;
     menu_p.preferred_width = DROP_DOWN_MENU_WIDTH;
 
-    LLToggleableMenu* menu = LLUICtrlFactory::create<LLFavoriteLandmarkToggleableMenu>(menu_p);
+    LLFavoriteLandmarkToggleableMenu* menu = LLUICtrlFactory::create<LLFavoriteLandmarkToggleableMenu>(menu_p);
+    menu->setToolbar(this);
     mOverflowMenuHandle = menu->getHandle();
 }
 
-void LLFavoritesBarCtrl::updateMenuItems(LLToggleableMenu* menu)
+void LLFavoritesBarCtrl::updateOverflowMenuItems()
 {
+    LLToggleableMenu* menu = (LLToggleableMenu*)mOverflowMenuHandle.get();
     menu->empty();
 
     U32 widest_item = 0;
@@ -1141,6 +1236,8 @@ void LLFavoritesBarCtrl::updateMenuItems(LLToggleableMenu* menu)
         menu->addChild(menu_item);
     }
 
+    menu->buildDrawLabels();
+    mDropDownItemsCount = menu->getItemCount();
     addOpenLandmarksMenuItem(menu);
     mUpdateDropDownItems = false;
 }
@@ -1153,7 +1250,7 @@ void LLFavoritesBarCtrl::fitLabelWidth(LLMenuItemCallGL* menu_item)
     // Check whether item name wider than menu
     if (menu_item->getNominalWidth() > max_width)
     {
-        S32 chars_total = item_name.length();
+        S32 chars_total = static_cast<S32>(item_name.length());
         S32 chars_fitted = 1;
         menu_item->setLabel(LLStringExplicit(""));
         S32 label_space = max_width - menu_item->getFont()->getWidth("...") -
@@ -1197,8 +1294,9 @@ void LLFavoritesBarCtrl::addOpenLandmarksMenuItem(LLToggleableMenu* menu)
     menu->addChild(menu_item);
 }
 
-void LLFavoritesBarCtrl::positionAndShowMenu(LLToggleableMenu* menu)
+void LLFavoritesBarCtrl::positionAndShowOverflowMenu()
 {
+    LLToggleableMenu* menu = (LLToggleableMenu*)mOverflowMenuHandle.get();
     U32 max_width = llmin(DROP_DOWN_MENU_WIDTH, getRect().getWidth());
 
     S32 menu_x = getRect().getWidth() - max_width;
@@ -1264,9 +1362,9 @@ void LLFavoritesBarCtrl::onButtonRightClick( LLUUID item_id,LLView* fav_button,S
     LLMenuGL::showPopup(fav_button, menu, x, y);
 }
 
-BOOL LLFavoritesBarCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLFavoritesBarCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = childrenHandleRightMouseDown( x, y, mask) != NULL;
+    bool handled = childrenHandleRightMouseDown( x, y, mask) != NULL;
     if(!handled && !gMenuHolder->hasVisibleMenu())
     {
         show_navbar_context_menu(this,x,y);
@@ -1277,7 +1375,7 @@ BOOL LLFavoritesBarCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
 }
 void copy_slurl_to_clipboard_cb(std::string& slurl)
 {
-    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(slurl),0,slurl.size());
+    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(slurl), 0, static_cast<S32>(slurl.size()));
 
     LLSD args;
     args["SLURL"] = slurl;
@@ -1407,7 +1505,7 @@ bool LLFavoritesBarCtrl::onRenameCommit(const LLSD& notification, const LLSD& re
         {
             LLPointer<LLViewerInventoryItem> new_item = new LLViewerInventoryItem(item);
             new_item->rename(landmark_name);
-            new_item->updateServer(FALSE);
+            new_item->updateServer(false);
             gInventory.updateItem(new_item);
         }
     }
@@ -1415,17 +1513,17 @@ bool LLFavoritesBarCtrl::onRenameCommit(const LLSD& notification, const LLSD& re
     return false;
 }
 
-BOOL LLFavoritesBarCtrl::isClipboardPasteable() const
+bool LLFavoritesBarCtrl::isClipboardPasteable() const
 {
     if (!LLClipboard::instance().hasContents())
     {
-        return FALSE;
+        return false;
     }
 
     std::vector<LLUUID> objects;
     LLClipboard::instance().pasteFromClipboard(objects);
-    S32 count = objects.size();
-    for(S32 i = 0; i < count; i++)
+    auto count = objects.size();
+    for(size_t i = 0; i < count; i++)
     {
         const LLUUID &item_id = objects.at(i);
 
@@ -1433,16 +1531,16 @@ BOOL LLFavoritesBarCtrl::isClipboardPasteable() const
         const LLInventoryCategory *cat = gInventory.getCategory(item_id);
         if (cat)
         {
-            return FALSE;
+            return false;
         }
 
         const LLInventoryItem *item = gInventory.getItem(item_id);
         if (item && LLAssetType::AT_LANDMARK != item->getType())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 void LLFavoritesBarCtrl::pasteFromClipboard() const
@@ -1453,9 +1551,9 @@ void LLFavoritesBarCtrl::pasteFromClipboard() const
         LLInventoryItem* item = NULL;
         std::vector<LLUUID> objects;
         LLClipboard::instance().pasteFromClipboard(objects);
-        S32 count = objects.size();
+        auto count = objects.size();
         LLUUID parent_id(mFavoriteFolderId);
-        for(S32 i = 0; i < count; i++)
+        for(size_t i = 0; i < count; i++)
         {
             item = model->getItem(objects.at(i));
             if (item)
@@ -1482,11 +1580,11 @@ void LLFavoritesBarCtrl::onButtonMouseDown(LLUUID id, LLUICtrl* ctrl, S32 x, S32
     LLMenuGL* menu = (LLMenuGL*)mContextMenuHandle.get();
     if(menu && menu->getVisible())
     {
-        menu->setVisible(FALSE);
+        menu->setVisible(false);
     }
 
     mDragItemId = id;
-    mStartDrag = TRUE;
+    mStartDrag = true;
 
     S32 screenX, screenY;
     localPointToScreen(x, y, &screenX, &screenY);
@@ -1496,7 +1594,7 @@ void LLFavoritesBarCtrl::onButtonMouseDown(LLUUID id, LLUICtrl* ctrl, S32 x, S32
 
 void LLFavoritesBarCtrl::onButtonMouseUp(LLUUID id, LLUICtrl* ctrl, S32 x, S32 y, MASK mask)
 {
-    mStartDrag = FALSE;
+    mStartDrag = false;
     mDragItemId = LLUUID::null;
 }
 
@@ -1504,12 +1602,12 @@ void LLFavoritesBarCtrl::onEndDrag()
 {
     mEndDragConnection.disconnect();
 
-    showDragMarker(FALSE);
+    showDragMarker(false);
     mDragItemId = LLUUID::null;
     LLView::getWindow()->setCursor(UI_CURSOR_ARROW);
 }
 
-BOOL LLFavoritesBarCtrl::handleHover(S32 x, S32 y, MASK mask)
+bool LLFavoritesBarCtrl::handleHover(S32 x, S32 y, MASK mask)
 {
     if (mDragItemId != LLUUID::null && mStartDrag)
     {
@@ -1522,13 +1620,13 @@ BOOL LLFavoritesBarCtrl::handleHover(S32 x, S32 y, MASK mask)
                 DAD_LANDMARK, mDragItemId,
                 LLToolDragAndDrop::SOURCE_LIBRARY);
 
-            mStartDrag = FALSE;
+            mStartDrag = false;
 
             return LLToolDragAndDrop::getInstance()->handleHover(x, y, mask);
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 LLUICtrl* LLFavoritesBarCtrl::findChildByLocalCoords(S32 x, S32 y)
@@ -1551,19 +1649,20 @@ LLUICtrl* LLFavoritesBarCtrl::findChildByLocalCoords(S32 x, S32 y)
             }
         }
     }
+
     return ctrl;
 }
 
-BOOL LLFavoritesBarCtrl::needToSaveItemsOrder(const LLInventoryModel::item_array_t& items)
+bool LLFavoritesBarCtrl::needToSaveItemsOrder(const LLInventoryModel::item_array_t& items)
 {
-    BOOL result = FALSE;
+    bool result = false;
 
     // if there is an item without sort order field set, we need to save items order
     for (LLInventoryModel::item_array_t::const_iterator i = items.begin(); i != items.end(); ++i)
     {
         if (LLFavoritesOrderStorage::instance().getSortIndex((*i)->getUUID()) < 0)
         {
-            result = TRUE;
+            result = true;
             break;
         }
     }
@@ -1967,8 +2066,8 @@ void LLFavoritesOrderStorage::saveItemsOrder( const LLInventoryModel::item_array
 
         setSortIndex(item, ++sortField);
 
-        item->setComplete(TRUE);
-        item->updateServer(FALSE);
+        item->setComplete(true);
+        item->updateServer(false);
 
         gInventory.updateItem(item);
 
@@ -1999,7 +2098,7 @@ void LLFavoritesOrderStorage::rearrangeFavoriteLandmarks(const LLUUID& source_it
     saveItemsOrder(items);
 }
 
-BOOL LLFavoritesOrderStorage::saveFavoritesRecord(bool pref_changed)
+bool LLFavoritesOrderStorage::saveFavoritesRecord(bool pref_changed)
 {
     pref_changed |= mRecreateFavoriteStorage;
     mRecreateFavoriteStorage = false;
@@ -2007,13 +2106,13 @@ BOOL LLFavoritesOrderStorage::saveFavoritesRecord(bool pref_changed)
     // Can get called before inventory is done initializing.
     if (!gInventory.isInventoryUsable())
     {
-        return FALSE;
+        return false;
     }
 
     LLUUID favorite_folder= gInventory.findCategoryUUIDForType(LLFolderType::FT_FAVORITE);
     if (favorite_folder.isNull())
     {
-        return FALSE;
+        return false;
     }
 
     LLInventoryModel::item_array_t items;
@@ -2125,11 +2224,11 @@ BOOL LLFavoritesOrderStorage::saveFavoritesRecord(bool pref_changed)
         mPrevFavorites = items;
     }
 
-    return TRUE;
+    return true;
 
 }
 
-void LLFavoritesOrderStorage::showFavoritesOnLoginChanged(BOOL show)
+void LLFavoritesOrderStorage::showFavoritesOnLoginChanged(bool show)
 {
     if (show)
     {
@@ -2160,8 +2259,10 @@ bool LLFavoritesOrderStorage::isStorageUpdateNeeded()
 
 void AddFavoriteLandmarkCallback::fire(const LLUUID& inv_item_id)
 {
-    if (mTargetLandmarkId.isNull()) return;
-
-    LLFavoritesOrderStorage::instance().rearrangeFavoriteLandmarks(inv_item_id, mTargetLandmarkId);
+    if (!mTargetLandmarkId.isNull())
+    {
+        LLFavoritesOrderStorage::instance().rearrangeFavoriteLandmarks(inv_item_id, mTargetLandmarkId);
+    }
 }
+
 // EOF
diff --git a/indra/newview/llfavoritesbar.h b/indra/newview/llfavoritesbar.h
index 92f5809b87..ee18f3ed45 100644
--- a/indra/newview/llfavoritesbar.h
+++ b/indra/newview/llfavoritesbar.h
@@ -57,29 +57,28 @@ protected:
 public:
     virtual ~LLFavoritesBarCtrl();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild() override;
 
-    /*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
-                                   EDragAndDropType cargo_type,
-                                   void* cargo_data,
-                                   EAcceptance* accept,
-                                   std::string& tooltip_msg);
+    /*virtual*/ bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
+        EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept, std::string& tooltip_msg) override;
+    bool handleDragAndDropToMenu(S32 x, S32 y, MASK mask, bool drop,
+        EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept, std::string& tooltip_msg);
 
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    handleRightMouseDown(S32 x, S32 y, MASK mask) override;
     // LLInventoryObserver observer trigger
-    virtual void changed(U32 mask);
-    virtual void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
-    virtual void draw();
+    /*virtual*/ void changed(U32 mask) override;
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true) override;
+    /*virtual*/ void draw() override;
 
-    void showDragMarker(BOOL show) { mShowDragMarker = show; }
+    void showDragMarker(bool show) { mShowDragMarker = show; }
     void setLandingTab(LLUICtrl* tab) { mLandingTab = tab; }
 
 protected:
     void updateButtons(bool force_update = false);
     LLButton* createButton(const LLPointer<LLViewerInventoryItem> item, const LLButton::Params& button_params, S32 x_offset );
     const LLButton::Params& getButtonParams();
-    BOOL collectFavoriteItems(LLInventoryModel::item_array_t &items);
+    bool collectFavoriteItems(LLInventoryModel::item_array_t &items);
 
     void onButtonClick(LLUUID id);
     void onButtonRightClick(LLUUID id,LLView* button,S32 x,S32 y,MASK mask);
@@ -92,7 +91,7 @@ protected:
     bool enableSelected(const LLSD& userdata);
     void doToSelected(const LLSD& userdata);
     static bool onRenameCommit(const LLSD& notification, const LLSD& response);
-    BOOL isClipboardPasteable() const;
+    bool isClipboardPasteable() const;
     void pasteFromClipboard() const;
 
     void showDropDownMenu();
@@ -108,7 +107,7 @@ protected:
     S32 mDropDownItemsCount;
     bool mUpdateDropDownItems;
     bool mRestoreOverflowMenu;
-
+    bool mDragToOverflowMenu;
     bool mGetPrevItems;
 
     LLUUID mSelectedItemID;
@@ -118,21 +117,23 @@ protected:
 private:
     /*
      * Helper function to make code more readable. It handles all drag and drop
-     * operations of the existing favorites items on the favorites bar.
+     * operations of the existing favorites items to the favorites bar to on the overflow menu.
      */
     void handleExistingFavoriteDragAndDrop(S32 x, S32 y);
 
     /*
      * Helper function to make code more readable. It handles all drag and drop
-     * operations of the new landmark to the favorites bar.
+     * operations of the new landmark to the favorites bar or to the overflow menu.
      */
     void handleNewFavoriteDragAndDrop(LLInventoryItem *item, const LLUUID& favorites_id, S32 x, S32 y);
 
     // finds a control under the specified LOCAL point
     LLUICtrl* findChildByLocalCoords(S32 x, S32 y);
 
+    bool findDragAndDropTarget(LLUUID &target_id, bool &insert_before, S32 x, S32 y);
+
     // checks if the current order of the favorites items must be saved
-    BOOL needToSaveItemsOrder(const LLInventoryModel::item_array_t& items);
+    bool needToSaveItemsOrder(const LLInventoryModel::item_array_t& items);
 
     /**
      * inserts an item identified by insertedItemId BEFORE an item identified by beforeItemId.
@@ -145,23 +146,23 @@ private:
 
     void createOverflowMenu();
 
-    void updateMenuItems(LLToggleableMenu* menu);
+    void updateOverflowMenuItems();
 
     // Fits menu item label width with favorites menu width
     void fitLabelWidth(LLMenuItemCallGL* menu_item);
 
     void addOpenLandmarksMenuItem(LLToggleableMenu* menu);
 
-    void positionAndShowMenu(LLToggleableMenu* menu);
+    void positionAndShowOverflowMenu();
 
-    BOOL mShowDragMarker;
+    bool mShowDragMarker;
     LLUICtrl* mLandingTab;
     LLUICtrl* mLastTab;
     LLTextBox* mMoreTextBox;
     LLTextBox* mBarLabel;
 
     LLUUID mDragItemId;
-    BOOL mStartDrag;
+    bool mStartDrag;
     LLInventoryModel::item_array_t mItems;
 
     static F64 sWaitingForCallabck;
@@ -224,8 +225,8 @@ public:
     // Remove record of current user's favorites from file on disk.
     static void removeFavoritesRecordOfUser();
 
-    BOOL saveFavoritesRecord(bool pref_changed = false);
-    void showFavoritesOnLoginChanged(BOOL show);
+    bool saveFavoritesRecord(bool pref_changed = false);
+    void showFavoritesOnLoginChanged(bool show);
 
     bool isStorageUpdateNeeded();
 
diff --git a/indra/newview/llfeaturemanager.cpp b/indra/newview/llfeaturemanager.cpp
index 5be48a3630..ac7d7b755b 100644
--- a/indra/newview/llfeaturemanager.cpp
+++ b/indra/newview/llfeaturemanager.cpp
@@ -71,8 +71,8 @@ const char FEATURE_TABLE_FILENAME[] = "featuretable.txt";
 
 #if 0                               // consuming code in #if 0 below
 #endif
-LLFeatureInfo::LLFeatureInfo(const std::string& name, const BOOL available, const F32 level)
-    : mValid(TRUE), mName(name), mAvailable(available), mRecommendedLevel(level)
+LLFeatureInfo::LLFeatureInfo(const std::string& name, const bool available, const F32 level)
+    : mValid(true), mName(name), mAvailable(available), mRecommendedLevel(level)
 {
 }
 
@@ -85,7 +85,7 @@ LLFeatureList::~LLFeatureList()
 {
 }
 
-void LLFeatureList::addFeature(const std::string& name, const BOOL available, const F32 level)
+void LLFeatureList::addFeature(const std::string& name, const bool available, const F32 level)
 {
     if (mFeatures.count(name))
     {
@@ -100,7 +100,7 @@ void LLFeatureList::addFeature(const std::string& name, const BOOL available, co
     mFeatures[name] = fi;
 }
 
-BOOL LLFeatureList::isFeatureAvailable(const std::string& name)
+bool LLFeatureList::isFeatureAvailable(const std::string& name)
 {
     if (mFeatures.count(name))
     {
@@ -109,9 +109,9 @@ BOOL LLFeatureList::isFeatureAvailable(const std::string& name)
 
     LL_WARNS_ONCE("RenderInit") << "Feature " << name << " not on feature list!" << LL_ENDL;
 
-    // changing this to TRUE so you have to explicitly disable
+    // changing this to true so you have to explicitly disable
     // something for it to be disabled
-    return TRUE;
+    return true;
 }
 
 F32 LLFeatureList::getRecommendedValue(const std::string& name)
@@ -126,7 +126,7 @@ F32 LLFeatureList::getRecommendedValue(const std::string& name)
     return 0;
 }
 
-BOOL LLFeatureList::maskList(LLFeatureList &mask)
+bool LLFeatureList::maskList(LLFeatureList &mask)
 {
     LL_DEBUGS_ONCE() << "Masking with " << mask.mName << LL_ENDL;
     //
@@ -169,7 +169,7 @@ BOOL LLFeatureList::maskList(LLFeatureList &mask)
         dump();
     LL_CONT << LL_ENDL;
 
-    return TRUE;
+    return true;
 }
 
 void LLFeatureList::dump()
@@ -197,7 +197,7 @@ static const std::vector<std::string> sGraphicsLevelNames = boost::assign::list_
 
 U32 LLFeatureManager::getMaxGraphicsLevel() const
 {
-    return sGraphicsLevelNames.size() - 1;
+    return static_cast<U32>(sGraphicsLevelNames.size()) - 1;
 }
 
 bool LLFeatureManager::isValidGraphicsLevel(U32 level) const
@@ -244,13 +244,13 @@ LLFeatureList *LLFeatureManager::findMask(const std::string& name)
     return NULL;
 }
 
-BOOL LLFeatureManager::maskFeatures(const std::string& name)
+bool LLFeatureManager::maskFeatures(const std::string& name)
 {
     LLFeatureList *maskp = findMask(name);
     if (!maskp)
     {
         LL_DEBUGS("RenderInit") << "Unknown feature mask " << name << LL_ENDL;
-        return FALSE;
+        return false;
     }
     LL_INFOS("RenderInit") << "Applying GPU Feature list: " << name << LL_ENDL;
     return maskList(*maskp);
@@ -295,7 +295,7 @@ bool LLFeatureManager::parseFeatureTable(std::string filename)
     if (!file)
     {
         LL_WARNS("RenderInit") << "Unable to open feature table " << filename << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // Check file version
@@ -458,7 +458,7 @@ bool LLFeatureManager::loadGPUClass()
 
     // defaults
     mGPUString = gGLManager.getRawGLString();
-    mGPUSupported = TRUE;
+    mGPUSupported = true;
 
     return true; // indicates that a gpu value was established
 }
@@ -540,7 +540,7 @@ void LLFeatureManager::applyFeatures(bool skipFeatures)
         // handle all the different types
         if(ctrl->isType(TYPE_BOOLEAN))
         {
-            gSavedSettings.setBOOL(mIt->first, (BOOL)getRecommendedValue(mIt->first));
+            gSavedSettings.setBOOL(mIt->first, (bool)getRecommendedValue(mIt->first));
         }
         else if (ctrl->isType(TYPE_S32))
         {
diff --git a/indra/newview/llfeaturemanager.h b/indra/newview/llfeaturemanager.h
index c333e2caeb..22de6afbae 100644
--- a/indra/newview/llfeaturemanager.h
+++ b/indra/newview/llfeaturemanager.h
@@ -50,15 +50,15 @@ typedef enum EGPUClass
 class LLFeatureInfo
 {
 public:
-    LLFeatureInfo() : mValid(FALSE), mAvailable(FALSE), mRecommendedLevel(-1) {}
-    LLFeatureInfo(const std::string& name, const BOOL available, const F32 level);
+    LLFeatureInfo() : mValid(false), mAvailable(false), mRecommendedLevel(-1) {}
+    LLFeatureInfo(const std::string& name, const bool available, const F32 level);
 
-    BOOL isValid() const    { return mValid; };
+    bool isValid() const    { return mValid; };
 
 public:
-    BOOL        mValid;
+    bool        mValid;
     std::string mName;
-    BOOL        mAvailable;
+    bool        mAvailable;
     F32         mRecommendedLevel;
 };
 
@@ -71,17 +71,17 @@ public:
     LLFeatureList(const std::string& name);
     virtual ~LLFeatureList();
 
-    BOOL isFeatureAvailable(const std::string& name);
+    bool isFeatureAvailable(const std::string& name);
     F32 getRecommendedValue(const std::string& name);
 
-    void setFeatureAvailable(const std::string& name, const BOOL available);
+    void setFeatureAvailable(const std::string& name, const bool available);
     void setRecommendedLevel(const std::string& name, const F32 level);
 
     bool loadFeatureList(LLFILE *fp);
 
-    BOOL maskList(LLFeatureList &mask);
+    bool maskList(LLFeatureList &mask);
 
-    void addFeature(const std::string& name, const BOOL available, const F32 level);
+    void addFeature(const std::string& name, const bool available, const F32 level);
 
     feature_map_t& getFeatures()
     {
@@ -115,17 +115,17 @@ public:
     // get the measured GPU memory bandwidth in GB/sec
     // may return 0 of benchmark has not been run or failed to run
     F32 getGPUMemoryBandwidth() { return mGPUMemoryBandwidth; }
-    BOOL isGPUSupported()               { return mGPUSupported; }
+    bool isGPUSupported()               { return mGPUSupported; }
     F32 getExpectedGLVersion()          { return mExpectedGLVersion; }
 
     void cleanupFeatureTables();
 
     S32 getVersion() const              { return mTableVersion; }
-    void setSafe(const BOOL safe)       { mSafe = safe; }
-    BOOL isSafe() const                 { return mSafe; }
+    void setSafe(const bool safe)       { mSafe = safe; }
+    bool isSafe() const                 { return mSafe; }
 
     LLFeatureList *findMask(const std::string& name);
-    BOOL maskFeatures(const std::string& name);
+    bool maskFeatures(const std::string& name);
 
     // set the graphics to low, medium, high, or ultra.
     // skipFeatures forces skipping of mostly hardware settings
@@ -156,32 +156,32 @@ protected:
     bool loadGPUClass();
 
     bool parseFeatureTable(std::string filename);
-    ///< @returns TRUE is file parsed correctly, FALSE if not
+    ///< @returns true is file parsed correctly, false if not
 
     void initBaseMask();
 
     std::map<std::string, LLFeatureList *> mMaskList;
     std::set<std::string> mSkippedFeatures;
-    BOOL        mInited;
+    bool        mInited;
     S32         mTableVersion;
-    BOOL        mSafe;                  // Reinitialize everything to the "safe" mask
+    bool        mSafe;                  // Reinitialize everything to the "safe" mask
     EGPUClass   mGPUClass;
     F32         mGPUMemoryBandwidth = 0.f;  // measured memory bandwidth of GPU in GB/second
     F32         mExpectedGLVersion;     //expected GL version according to gpu table
     std::string mGPUString;
-    BOOL        mGPUSupported;
+    bool        mGPUSupported;
 };
 
 inline
 LLFeatureManager::LLFeatureManager()
 :   LLFeatureList("default"),
 
-    mInited(FALSE),
+    mInited(false),
     mTableVersion(0),
-    mSafe(FALSE),
+    mSafe(false),
     mGPUClass(GPU_CLASS_UNKNOWN),
     mExpectedGLVersion(0.f),
-    mGPUSupported(FALSE)
+    mGPUSupported(false)
 {
 }
 
diff --git a/indra/newview/llfetchedgltfmaterial.cpp b/indra/newview/llfetchedgltfmaterial.cpp
index 5296f40119..c2821d56d6 100644
--- a/indra/newview/llfetchedgltfmaterial.cpp
+++ b/indra/newview/llfetchedgltfmaterial.cpp
@@ -46,7 +46,7 @@ LLFetchedGLTFMaterial::LLFetchedGLTFMaterial()
 
 LLFetchedGLTFMaterial::~LLFetchedGLTFMaterial()
 {
-    
+
 }
 
 LLFetchedGLTFMaterial& LLFetchedGLTFMaterial::operator=(const LLFetchedGLTFMaterial& rhs)
@@ -142,7 +142,6 @@ void LLFetchedGLTFMaterial::bind(LLViewerTexture* media_tex)
         mTextureTransform[GLTF_TEXTURE_INFO_EMISSIVE].getPacked(emissive_packed);
         shader->uniform4fv(LLShaderMgr::TEXTURE_EMISSIVE_TRANSFORM, 2, (F32*)emissive_packed);
     }
-
 }
 
 LLViewerFetchedTexture* fetch_texture(const LLUUID& id)
@@ -150,8 +149,8 @@ LLViewerFetchedTexture* fetch_texture(const LLUUID& id)
     LLViewerFetchedTexture* img = nullptr;
     if (id.notNull())
     {
-        img = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
-        img->addTextureStats(64.f * 64.f, TRUE);
+        img = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+        img->addTextureStats(64.f * 64.f, true);
     }
     return img;
 };
diff --git a/indra/newview/llfetchedgltfmaterial.h b/indra/newview/llfetchedgltfmaterial.h
index 7550c75b45..634a4853b0 100644
--- a/indra/newview/llfetchedgltfmaterial.h
+++ b/indra/newview/llfetchedgltfmaterial.h
@@ -70,7 +70,7 @@ public:
     static LLFetchedGLTFMaterial sDefault;
 protected:
     // Lifetime management
-    
+
     void materialBegin();
     void materialComplete(bool success);
 
diff --git a/indra/newview/llfilepicker.cpp b/indra/newview/llfilepicker.cpp
index 7f0a8d3787..0791489c84 100644
--- a/indra/newview/llfilepicker.cpp
+++ b/indra/newview/llfilepicker.cpp
@@ -174,9 +174,9 @@ void LLFilePicker::reset()
 
 #if LL_WINDOWS
 
-BOOL LLFilePicker::setupFilter(ELoadFilter filter)
+bool LLFilePicker::setupFilter(ELoadFilter filter)
 {
-    BOOL res = TRUE;
+    bool res = true;
     switch (filter)
     {
     case FFLOAD_ALL:
@@ -247,24 +247,24 @@ BOOL LLFilePicker::setupFilter(ELoadFilter filter)
             L"\0";
         break;
     default:
-        res = FALSE;
+        res = false;
         break;
     }
     return res;
 }
 
-BOOL LLFilePicker::getOpenFile(ELoadFilter filter, bool blocking)
+bool LLFilePicker::getOpenFile(ELoadFilter filter, bool blocking)
 {
-    if( mLocked )
+    if (mLocked)
     {
-        return FALSE;
+        return false;
     }
-    BOOL success = FALSE;
+    bool success = false;
 
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
-        return FALSE;
+        return false;
     }
 
     // don't provide default file selection
@@ -304,27 +304,27 @@ BOOL LLFilePicker::getOpenFile(ELoadFilter filter, bool blocking)
     return success;
 }
 
-BOOL LLFilePicker::getOpenFileModeless(ELoadFilter filter,
+bool LLFilePicker::getOpenFileModeless(ELoadFilter filter,
                                        void (*callback)(bool, std::vector<std::string> &, void*),
                                        void *userdata)
 {
     // not supposed to be used yet, use LLFilePickerThread
     LL_ERRS() << "NOT IMPLEMENTED" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
-BOOL LLFilePicker::getMultipleOpenFiles(ELoadFilter filter, bool blocking)
+bool LLFilePicker::getMultipleOpenFiles(ELoadFilter filter, bool blocking)
 {
     if( mLocked )
     {
-        return FALSE;
+        return false;
     }
-    BOOL success = FALSE;
+    bool success = false;
 
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
-        return FALSE;
+        return false;
     }
 
     // don't provide default file selection
@@ -390,27 +390,27 @@ BOOL LLFilePicker::getMultipleOpenFiles(ELoadFilter filter, bool blocking)
     return success;
 }
 
-BOOL LLFilePicker::getMultipleOpenFilesModeless(ELoadFilter filter,
+bool LLFilePicker::getMultipleOpenFilesModeless(ELoadFilter filter,
                                                 void (*callback)(bool, std::vector<std::string> &, void*),
                                                 void *userdata )
 {
     // not supposed to be used yet, use LLFilePickerThread
     LL_ERRS() << "NOT IMPLEMENTED" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
-BOOL LLFilePicker::getSaveFile(ESaveFilter filter, const std::string& filename, bool blocking)
+bool LLFilePicker::getSaveFile(ESaveFilter filter, const std::string& filename, bool blocking)
 {
     if( mLocked )
     {
-        return FALSE;
+        return false;
     }
-    BOOL success = FALSE;
+    bool success = false;
 
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
-        return FALSE;
+        return false;
     }
 
     mOFN.lpstrFile = mFilesW;
@@ -520,11 +520,11 @@ BOOL LLFilePicker::getSaveFile(ESaveFilter filter, const std::string& filename,
     case FFSAVE_GLTF:
         if (filename.empty())
         {
-            wcsncpy( mFilesW,L"untitled.glb", FILENAME_BUFFER_SIZE);    /*Flawfinder: ignore*/
+            wcsncpy( mFilesW,L"untitled.gltf", FILENAME_BUFFER_SIZE);   /*Flawfinder: ignore*/
         }
-        mOFN.lpstrDefExt = L"glb";
+        mOFN.lpstrDefExt = L"gltf";
         mOFN.lpstrFilter =
-            L"glTF Asset File (*.gltf *.glb)\0*.gltf;*.glb\0" \
+            L"glTF Asset File (*.gltf)\0*.gltf\0" \
             L"\0";
         break;
     case FFSAVE_XML:
@@ -576,7 +576,7 @@ BOOL LLFilePicker::getSaveFile(ESaveFilter filter, const std::string& filename,
         mOFN.lpstrFilter = L"LSL Files (*.lsl)\0*.lsl\0" L"\0";
         break;
     default:
-        return FALSE;
+        return false;
     }
 
 
@@ -619,14 +619,14 @@ BOOL LLFilePicker::getSaveFile(ESaveFilter filter, const std::string& filename,
     return success;
 }
 
-BOOL LLFilePicker::getSaveFileModeless(ESaveFilter filter,
+bool LLFilePicker::getSaveFileModeless(ESaveFilter filter,
                                        const std::string& filename,
                                        void (*callback)(bool, std::string&, void*),
                                        void *userdata)
 {
     // not supposed to be used yet, use LLFilePickerThread
     LL_ERRS() << "NOT IMPLEMENTED" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
 #elif LL_DARWIN
@@ -701,10 +701,10 @@ std::unique_ptr<std::vector<std::string>> LLFilePicker::navOpenFilterProc(ELoadF
     return allowedv;
 }
 
-bool    LLFilePicker::doNavChooseDialog(ELoadFilter filter)
+bool LLFilePicker::doNavChooseDialog(ELoadFilter filter)
 {
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
         return false;
     }
@@ -728,12 +728,12 @@ bool    LLFilePicker::doNavChooseDialog(ELoadFilter filter)
     return false;
 }
 
-bool    LLFilePicker::doNavChooseDialogModeless(ELoadFilter filter,
+bool LLFilePicker::doNavChooseDialogModeless(ELoadFilter filter,
                                                 void (*callback)(bool, std::vector<std::string> &,void*),
                                                 void *userdata)
 {
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
         return false;
     }
@@ -796,7 +796,7 @@ void set_nav_save_data(LLFilePicker::ESaveFilter filter, std::string &extension,
         case LLFilePicker::FFSAVE_GLTF:
             type = "\?\?\?\?";
             creator = "\?\?\?\?";
-            extension = "glb";
+            extension = "gltf";
             break;
 
         case LLFilePicker::FFSAVE_XML:
@@ -832,7 +832,7 @@ void set_nav_save_data(LLFilePicker::ESaveFilter filter, std::string &extension,
     }
 }
 
-bool    LLFilePicker::doNavSaveDialog(ESaveFilter filter, const std::string& filename)
+bool LLFilePicker::doNavSaveDialog(ESaveFilter filter, const std::string& filename)
 {
     // Setup the type, creator, and extension
     std::string     extension, type, creator;
@@ -862,7 +862,7 @@ bool    LLFilePicker::doNavSaveDialog(ESaveFilter filter, const std::string& fil
     return false;
 }
 
-bool    LLFilePicker::doNavSaveDialogModeless(ESaveFilter filter,
+bool LLFilePicker::doNavSaveDialogModeless(ESaveFilter filter,
                                               const std::string& filename,
                                               void (*callback)(bool, std::string&, void*),
                                               void *userdata)
@@ -886,17 +886,17 @@ bool    LLFilePicker::doNavSaveDialogModeless(ESaveFilter filter,
     return true;
 }
 
-BOOL LLFilePicker::getOpenFile(ELoadFilter filter, bool blocking)
+bool LLFilePicker::getOpenFile(ELoadFilter filter, bool blocking)
 {
     if( mLocked )
-        return FALSE;
+        return false;
 
-    BOOL success = FALSE;
+    bool success = false;
 
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
-        return FALSE;
+        return false;
     }
 
     reset();
@@ -906,7 +906,6 @@ BOOL LLFilePicker::getOpenFile(ELoadFilter filter, bool blocking)
 
     if (filter == FFLOAD_DIRECTORY) //This should only be called from lldirpicker.
     {
-
         mPickOptions |= ( F_NAV_SUPPORT | F_DIRECTORY );
         mPickOptions &= ~F_FILE;
     }
@@ -942,17 +941,17 @@ BOOL LLFilePicker::getOpenFile(ELoadFilter filter, bool blocking)
 }
 
 
-BOOL LLFilePicker::getOpenFileModeless(ELoadFilter filter,
+bool LLFilePicker::getOpenFileModeless(ELoadFilter filter,
                                        void (*callback)(bool, std::vector<std::string> &, void*),
                                        void *userdata)
 {
-    if( mLocked )
-        return FALSE;
+    if (mLocked)
+        return false;
 
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
-        return FALSE;
+        return false;
     }
 
     reset();
@@ -975,18 +974,18 @@ BOOL LLFilePicker::getOpenFileModeless(ELoadFilter filter,
     return doNavChooseDialogModeless(filter, callback, userdata);
 }
 
-BOOL LLFilePicker::getMultipleOpenFiles(ELoadFilter filter, bool blocking)
+bool LLFilePicker::getMultipleOpenFiles(ELoadFilter filter, bool blocking)
 {
-    if( mLocked )
-        return FALSE;
+    if (mLocked)
+        return false;
 
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL success = FALSE;
+    bool success = false;
 
     reset();
 
@@ -1021,17 +1020,17 @@ BOOL LLFilePicker::getMultipleOpenFiles(ELoadFilter filter, bool blocking)
 }
 
 
-BOOL LLFilePicker::getMultipleOpenFilesModeless(ELoadFilter filter,
+bool LLFilePicker::getMultipleOpenFilesModeless(ELoadFilter filter,
                                                 void (*callback)(bool, std::vector<std::string> &, void*),
                                                 void *userdata )
 {
-    if( mLocked )
-        return FALSE;
+    if (mLocked)
+        return false;
 
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
-        return FALSE;
+        return false;
     }
 
     reset();
@@ -1043,15 +1042,16 @@ BOOL LLFilePicker::getMultipleOpenFilesModeless(ELoadFilter filter,
     return doNavChooseDialogModeless(filter, callback, userdata);
 }
 
-BOOL LLFilePicker::getSaveFile(ESaveFilter filter, const std::string& filename, bool blocking)
+bool LLFilePicker::getSaveFile(ESaveFilter filter, const std::string& filename, bool blocking)
 {
 
-    if( mLocked )
+    if (mLocked)
         return false;
-    BOOL success = false;
+
+    bool success = false;
 
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
         return false;
     }
@@ -1084,16 +1084,16 @@ BOOL LLFilePicker::getSaveFile(ESaveFilter filter, const std::string& filename,
     return success;
 }
 
-BOOL LLFilePicker::getSaveFileModeless(ESaveFilter filter,
+bool LLFilePicker::getSaveFileModeless(ESaveFilter filter,
                                        const std::string& filename,
                                        void (*callback)(bool, std::string&, void*),
                                        void *userdata)
 {
-    if( mLocked )
+    if (mLocked)
         return false;
 
     // if local file browsing is turned off, return without opening dialog
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
         return false;
     }
@@ -1137,17 +1137,17 @@ BOOL LLFilePicker::getMultipleOpenFilesModeless(ELoadFilter filter,
 
 
 
-BOOL LLFilePicker::getSaveFile( ESaveFilter filter, const std::string& filename, bool blocking )
+bool LLFilePicker::getSaveFile( ESaveFilter filter, const std::string& filename, bool blocking )
 {
     return openFileDialog( filter, blocking, eSaveFile );
 }
 
-BOOL LLFilePicker::getOpenFile( ELoadFilter filter, bool blocking )
+bool LLFilePicker::getOpenFile( ELoadFilter filter, bool blocking )
 {
     return openFileDialog( filter, blocking, eOpenFile );
 }
 
-BOOL LLFilePicker::getMultipleOpenFiles( ELoadFilter filter, bool blocking)
+bool LLFilePicker::getMultipleOpenFiles( ELoadFilter filter, bool blocking)
 {
     return openFileDialog( filter, blocking, eOpenMultiple );
 }
@@ -1336,13 +1336,13 @@ bool LLFilePicker::openFileDialog( int32_t filter, bool blocking, EType aType )
 // Hacky stubs designed to facilitate fake getSaveFile and getOpenFile with
 // static results, when we don't have a real filepicker.
 
-BOOL LLFilePicker::getSaveFile( ESaveFilter filter, const std::string& filename, bool blocking )
+bool LLFilePicker::getSaveFile( ESaveFilter filter, const std::string& filename, bool blocking )
 {
     // if local file browsing is turned off, return without opening dialog
     // (Even though this is a stub, I think we still should not return anything at all)
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
-        return FALSE;
+        return false;
     }
 
     reset();
@@ -1352,27 +1352,27 @@ BOOL LLFilePicker::getSaveFile( ESaveFilter filter, const std::string& filename,
     if (!filename.empty())
     {
         mFiles.push_back(gDirUtilp->getLindenUserDir() + gDirUtilp->getDirDelimiter() + filename);
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLFilePicker::getSaveFileModeless(ESaveFilter filter,
+bool LLFilePicker::getSaveFileModeless(ESaveFilter filter,
                                        const std::string& filename,
                                        void (*callback)(bool, std::string&, void*),
                                        void *userdata)
 {
     LL_ERRS() << "NOT IMPLEMENTED" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
-BOOL LLFilePicker::getOpenFile( ELoadFilter filter, bool blocking )
+bool LLFilePicker::getOpenFile( ELoadFilter filter, bool blocking )
 {
     // if local file browsing is turned off, return without opening dialog
     // (Even though this is a stub, I think we still should not return anything at all)
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
-        return FALSE;
+        return false;
     }
 
     reset();
@@ -1388,58 +1388,58 @@ BOOL LLFilePicker::getOpenFile( ELoadFilter filter, bool blocking )
     }
     mFiles.push_back(filename);
     LL_INFOS() << "getOpenFile: Will try to open file: " << filename << LL_ENDL;
-    return TRUE;
+    return true;
 }
 
-BOOL LLFilePicker::getOpenFileModeless(ELoadFilter filter,
+bool LLFilePicker::getOpenFileModeless(ELoadFilter filter,
                                        void (*callback)(bool, std::vector<std::string> &, void*),
                                        void *userdata)
 {
     LL_ERRS() << "NOT IMPLEMENTED" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
-BOOL LLFilePicker::getMultipleOpenFiles( ELoadFilter filter, bool blocking)
+bool LLFilePicker::getMultipleOpenFiles( ELoadFilter filter, bool blocking)
 {
     // if local file browsing is turned off, return without opening dialog
     // (Even though this is a stub, I think we still should not return anything at all)
-    if ( check_local_file_access_enabled() == false )
+    if (!check_local_file_access_enabled())
     {
-        return FALSE;
+        return false;
     }
 
     reset();
-    return FALSE;
+    return false;
 }
 
-BOOL LLFilePicker::getMultipleOpenFilesModeless(ELoadFilter filter,
+bool LLFilePicker::getMultipleOpenFilesModeless(ELoadFilter filter,
                                                 void (*callback)(bool, std::vector<std::string> &, void*),
                                                 void *userdata )
 {
     LL_ERRS() << "NOT IMPLEMENTED" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
 #endif // LL_FLTK
 
 #else // not implemented
 
-BOOL LLFilePicker::getSaveFile( ESaveFilter filter, const std::string& filename, bool blocking )
+bool LLFilePicker::getSaveFile( ESaveFilter filter, const std::string& filename, bool blocking )
 {
     reset();
-    return FALSE;
+    return false;
 }
 
-BOOL LLFilePicker::getOpenFile( ELoadFilter filter, bool blocking )
+bool LLFilePicker::getOpenFile( ELoadFilter filter, bool blocking )
 {
     reset();
-    return FALSE;
+    return false;
 }
 
-BOOL LLFilePicker::getMultipleOpenFiles( ELoadFilter filter, bool blocking)
+bool LLFilePicker::getMultipleOpenFiles( ELoadFilter filter, bool blocking)
 {
     reset();
-    return FALSE;
+    return false;
 }
 
 #endif // LL_LINUX
diff --git a/indra/newview/llfilepicker.h b/indra/newview/llfilepicker.h
index faffee7aba..b99156c61e 100644
--- a/indra/newview/llfilepicker.h
+++ b/indra/newview/llfilepicker.h
@@ -101,17 +101,17 @@ public:
     };
 
     // open the dialog. This is a modal operation
-    BOOL getSaveFile( ESaveFilter filter = FFSAVE_ALL, const std::string& filename = LLStringUtil::null, bool blocking = true);
-    BOOL getSaveFileModeless(ESaveFilter filter,
+    bool getSaveFile( ESaveFilter filter = FFSAVE_ALL, const std::string& filename = LLStringUtil::null, bool blocking = true);
+    bool getSaveFileModeless(ESaveFilter filter,
                              const std::string& filename,
                              void (*callback)(bool, std::string&, void*),
                              void *userdata);
-    BOOL getOpenFile( ELoadFilter filter = FFLOAD_ALL, bool blocking = true  );
+    bool getOpenFile( ELoadFilter filter = FFLOAD_ALL, bool blocking = true  );
     // Todo: implement getOpenFileModeless and getMultipleOpenFilesModeless
     // for windows and use directly instead of ugly LLFilePickerThread
-    BOOL getOpenFileModeless( ELoadFilter filter, void (*callback)(bool, std::vector<std::string> &, void*), void *userdata); // MAC only.
-    BOOL getMultipleOpenFiles( ELoadFilter filter = FFLOAD_ALL, bool blocking = true );
-    BOOL getMultipleOpenFilesModeless( ELoadFilter filter, void (*callback)(bool, std::vector<std::string> &, void*), void *userdata ); // MAC only
+    bool getOpenFileModeless( ELoadFilter filter, void (*callback)(bool, std::vector<std::string> &, void*), void *userdata); // MAC only.
+    bool getMultipleOpenFiles( ELoadFilter filter = FFLOAD_ALL, bool blocking = true );
+    bool getMultipleOpenFilesModeless( ELoadFilter filter, void (*callback)(bool, std::vector<std::string> &, void*), void *userdata ); // MAC only
 
     // Get the filename(s) found. getFirstFile() sets the pointer to
     // the start of the structure and allows the start of iteration.
@@ -154,7 +154,7 @@ private:
     OPENFILENAMEW mOFN;             // for open and save dialogs
     WCHAR mFilesW[FILENAME_BUFFER_SIZE];
 
-    BOOL setupFilter(ELoadFilter filter);
+    bool setupFilter(ELoadFilter filter);
 #endif
 
 #if LL_DARWIN
diff --git a/indra/newview/llfilepicker_mac.mm b/indra/newview/llfilepicker_mac.mm
index 4dd8bea4e1..b21bc724fb 100644
--- a/indra/newview/llfilepicker_mac.mm
+++ b/indra/newview/llfilepicker_mac.mm
@@ -121,7 +121,7 @@ void doLoadDialogModeless(const std::vector<std::string>* allowed_types,
         [panel beginWithCompletionHandler:^(NSModalResponse result)
         {
             std::vector<std::string> outfiles;
-            if (result == NSOKButton)
+            if (result == NSModalResponseOK)
             {
                 NSArray *filesToOpen = [panel URLs];
                 int i, count = [filesToOpen count];
diff --git a/indra/newview/llfirstuse.cpp b/indra/newview/llfirstuse.cpp
index 8c0aa4b8a5..ca42958c41 100644
--- a/indra/newview/llfirstuse.cpp
+++ b/indra/newview/llfirstuse.cpp
@@ -144,7 +144,7 @@ void LLFirstUse::firstUseNotification(const std::string& control_var, bool enabl
         LL_DEBUGS("LLFirstUse") << "Disabling first use notification " << notification_name << LL_ENDL;
         LLNotifications::instance().cancelByName(notification_name);
         // redundantly clear settings var here, in case there are no notifications to cancel
-        gWarningSettings.setBOOL(control_var, FALSE);
+        gWarningSettings.setBOOL(control_var, false);
     }
 
 }
@@ -169,7 +169,7 @@ bool LLFirstUse::processNotification(const LLSD& notify)
         if (notification)
         {
             // disable any future notifications
-            gWarningSettings.setBOOL(notification->getPayload()["control_var"], FALSE);
+            gWarningSettings.setBOOL((std::string)notification->getPayload()["control_var"], false);
         }
     }
     return false;
diff --git a/indra/newview/llflexibleobject.cpp b/indra/newview/llflexibleobject.cpp
index 7ed62d68bd..367803b78a 100644
--- a/indra/newview/llflexibleobject.cpp
+++ b/indra/newview/llflexibleobject.cpp
@@ -60,8 +60,8 @@ LLVolumeImplFlexible::LLVolumeImplFlexible(LLViewerObject* vo, LLFlexibleObjectD
 {
     static U32 seed = 0;
     mID = seed++;
-    mInitialized = FALSE;
-    mUpdated = FALSE;
+    mInitialized = false;
+    mUpdated = false;
     mInitializedRes = -1;
     mSimulateRes = 0;
     mCollisionSphereRadius = 0.f;
@@ -72,13 +72,13 @@ LLVolumeImplFlexible::LLVolumeImplFlexible(LLViewerObject* vo, LLFlexibleObjectD
         mVO->mDrawable->makeActive() ;
     }
 
-    mInstanceIndex = sInstanceList.size();
+    mInstanceIndex = static_cast<S32>(sInstanceList.size());
     sInstanceList.push_back(this);
 }//-----------------------------------------------
 
 LLVolumeImplFlexible::~LLVolumeImplFlexible()
 {
-    S32 end_idx = sInstanceList.size()-1;
+    S32 end_idx = static_cast<S32>(sInstanceList.size()) - 1;
 
     if (end_idx != mInstanceIndex)
     {
@@ -119,7 +119,7 @@ LLQuaternion LLVolumeImplFlexible::getFrameRotation() const
     return mVO->getRenderRotation();
 }
 
-void LLVolumeImplFlexible::onParameterChanged(U16 param_type, LLNetworkData *data, BOOL in_use, bool local_origin)
+void LLVolumeImplFlexible::onParameterChanged(U16 param_type, LLNetworkData *data, bool in_use, bool local_origin)
 {
     if (param_type == LLNetworkData::PARAMS_FLEXIBLE)
     {
@@ -324,7 +324,7 @@ void LLVolumeImplFlexible::updateRenderRes()
     {
         mSimulateRes = new_res;
         setAttributesOfAllSections();
-        mInitialized = TRUE;
+        mInitialized = true;
     }
 }
 //---------------------------------------------------------------------------------
@@ -433,7 +433,7 @@ void LLVolumeImplFlexible::doFlexibleUpdate()
     LLPath *path = &volume->getPath();
     if ((mSimulateRes == 0 || !mInitialized) && mVO->mDrawable->isVisible())
     {
-        BOOL force_update = mSimulateRes == 0 ? TRUE : FALSE;
+        bool force_update = mSimulateRes == 0;
         doIdleUpdate();
 
         if (!force_update || !gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_FLEXIBLE))
@@ -442,10 +442,10 @@ void LLVolumeImplFlexible::doFlexibleUpdate()
         }
     }
 
-    if(!mInitialized || !mAttributes)
+    if (!mInitialized || !mAttributes)
     {
         //the object is not visible
-        return ;
+        return;
     }
 
     // Fix for MAINT-1894
@@ -668,7 +668,7 @@ void LLVolumeImplFlexible::doFlexibleUpdate()
     S32 num_render_sections = 1<<mRenderRes;
     if (path->getPathLength() != num_render_sections+1)
     {
-        ((LLVOVolume*) mVO)->mVolumeChanged = TRUE;
+        ((LLVOVolume*) mVO)->mVolumeChanged = true;
         volume->resizePath(num_render_sections+1);
     }
 
@@ -708,7 +708,7 @@ void LLVolumeImplFlexible::doFlexibleUpdate()
         if (!mUpdated || (np-pos).magVec()/mVO->mDrawable->mDistanceWRTCamera > 0.001f)
         {
             new_point->mPos.load3((newSection[i].mPosition * rel_xform).mV);
-            mUpdated = FALSE;
+            mUpdated = false;
         }
 
         new_point->mRot.loadu(LLMatrix3(rot));
@@ -741,17 +741,17 @@ void LLVolumeImplFlexible::doFlexibleRebuild(bool rebuild_volume)
         volume->regen();
     }
 
-    mUpdated = TRUE;
+    mUpdated = true;
 }
 
 //------------------------------------------------------------------
 
-void LLVolumeImplFlexible::onSetScale(const LLVector3& scale, BOOL damped)
+void LLVolumeImplFlexible::onSetScale(const LLVector3& scale, bool damped)
 {
     setAttributesOfAllSections((LLVector3*) &scale);
 }
 
-BOOL LLVolumeImplFlexible::doUpdateGeometry(LLDrawable *drawable)
+bool LLVolumeImplFlexible::doUpdateGeometry(LLDrawable *drawable)
 {
     LL_PROFILE_ZONE_SCOPED;
     LLVOVolume *volume = (LLVOVolume*)mVO;
@@ -770,21 +770,21 @@ BOOL LLVolumeImplFlexible::doUpdateGeometry(LLDrawable *drawable)
             LLVOAvatar* avatar = (LLVOAvatar*) parent;
             if (avatar->isImpostor() && !avatar->needsImpostorUpdate())
             {
-                return TRUE;
+                return true;
             }
         }
     }
 
     if (volume->mDrawable.isNull())
     {
-        return TRUE; // No update to complete
+        return true; // No update to complete
     }
 
     if (volume->mLODChanged)
     {
         LLVolumeParams volume_params = volume->getVolume()->getParams();
         volume->setVolume(volume_params, 0);
-        mUpdated = FALSE;
+        mUpdated = false;
     }
 
     volume->updateRelativeXform();
@@ -792,12 +792,12 @@ BOOL LLVolumeImplFlexible::doUpdateGeometry(LLDrawable *drawable)
     doFlexibleUpdate();
 
     // Object may have been rotated, which means it needs a rebuild.  See SL-47220
-    BOOL    rotated = FALSE;
+    bool    rotated = false;
     LLQuaternion cur_rotation = getFrameRotation();
     if ( cur_rotation != mLastFrameRotation )
     {
         mLastFrameRotation = cur_rotation;
-        rotated = TRUE;
+        rotated = true;
     }
 
     if (volume->mLODChanged || volume->mFaceMappingChanged ||
@@ -822,14 +822,14 @@ BOOL LLVolumeImplFlexible::doUpdateGeometry(LLDrawable *drawable)
         volume->genBBoxes(isVolumeGlobal());
     }
 
-    volume->mVolumeChanged = FALSE;
-    volume->mLODChanged = FALSE;
-    volume->mFaceMappingChanged = FALSE;
+    volume->mVolumeChanged = false;
+    volume->mLODChanged = false;
+    volume->mFaceMappingChanged = false;
 
     // clear UV flag
     drawable->clearState(LLDrawable::UV);
 
-    return TRUE;
+    return true;
 }
 
 //----------------------------------------------------------------------------------
diff --git a/indra/newview/llflexibleobject.h b/indra/newview/llflexibleobject.h
index b4a8659c41..958bf9029c 100644
--- a/indra/newview/llflexibleobject.h
+++ b/indra/newview/llflexibleobject.h
@@ -87,11 +87,11 @@ private:
         LLVolumeInterfaceType getInterfaceType() const      { return INTERFACE_FLEXIBLE; }
         void updateRenderRes();
         void doIdleUpdate();
-        BOOL doUpdateGeometry(LLDrawable *drawable);
+        bool doUpdateGeometry(LLDrawable *drawable);
         LLVector3 getPivotPosition() const;
         void onSetVolume(const LLVolumeParams &volume_params, const S32 detail);
-        void onSetScale(const LLVector3 &scale, BOOL damped);
-        void onParameterChanged(U16 param_type, LLNetworkData *data, BOOL in_use, bool local_origin);
+        void onSetScale(const LLVector3 &scale, bool damped);
+        void onParameterChanged(U16 param_type, LLNetworkData *data, bool in_use, bool local_origin);
         void onShift(const LLVector4a &shift_vector);
         bool isVolumeUnique() const { return true; }
         bool isVolumeGlobal() const { return true; }
@@ -125,8 +125,8 @@ private:
         LLQuaternion                mParentRotation;
         LLQuaternion                mLastFrameRotation;
         LLQuaternion                mLastSegmentRotation;
-        BOOL                        mInitialized;
-        BOOL                        mUpdated;
+        bool                        mInitialized;
+        bool                        mUpdated;
         LLFlexibleObjectData*       mAttributes;
         LLFlexibleObjectSection     mSection    [ (1<<FLEXIBLE_OBJECT_MAX_SECTIONS)+1 ];
         S32                         mInitializedRes;
diff --git a/indra/newview/llfloater360capture.cpp b/indra/newview/llfloater360capture.cpp
index f3b924a306..66796276a9 100644
--- a/indra/newview/llfloater360capture.cpp
+++ b/indra/newview/llfloater360capture.cpp
@@ -1,4 +1,4 @@
-/**
+/**
  * @file llfloater360capture.cpp
  * @author Callum Prentice (callum@lindenlab.com)
  * @brief Floater code for the 360 Capture feature
@@ -67,7 +67,7 @@ LLFloater360Capture::LLFloater360Capture(const LLSD& key)
     mStartILMode = gAgent.getInterestListMode();
 
     // send everything to us for as long as this floater is open
-    gAgent.changeInterestListMode(LLViewerRegion::IL_MODE_360);
+    gAgent.changeInterestListMode(IL_MODE_360);
 }
 
 LLFloater360Capture::~LLFloater360Capture()
@@ -91,7 +91,7 @@ LLFloater360Capture::~LLFloater360Capture()
     }
 }
 
-BOOL LLFloater360Capture::postBuild()
+bool LLFloater360Capture::postBuild()
 {
     mCaptureBtn = getChild<LLUICtrl>("capture_button");
     mCaptureBtn->setCommitCallback(boost::bind(&LLFloater360Capture::onCapture360ImagesBtn, this));
@@ -360,6 +360,8 @@ void LLFloater360Capture::encodeAndSave(LLPointer<LLImageRaw> raw_image, const s
     int jpeg_encode_quality = gSavedSettings.getU32("360CaptureJPEGEncodeQuality");
     LLPointer<LLImageJPEG> jpeg_image = new LLImageJPEG(jpeg_encode_quality);
 
+    LLImageDataSharedLock lock(raw_image);
+
     // Actually encode the JPEG image. This is where a lot of time
     // is spent now that the snapshot capture process has been
     // optimized.  The encode_time parameter doesn't appear to be
@@ -410,14 +412,16 @@ void LLFloater360Capture::suspendForAFrame()
 // Probably not needed anymore but saving here just in case.
 void LLFloater360Capture::mockSnapShot(LLImageRaw* raw)
 {
+    LLImageDataLock lock(raw);
+
     unsigned int width = raw->getWidth();
     unsigned int height = raw->getHeight();
     unsigned int depth = raw->getComponents();
     unsigned char* pixels = raw->getData();
 
-    for (int y = 0; y < height; y++)
+    for (unsigned int y = 0; y < height; y++)
     {
-        for (int x = 0; x < width; x++)
+        for (unsigned int x = 0; x < width; x++)
         {
             unsigned long offset = y * width * depth + x * depth;
             unsigned char red = x * 256 / width;
@@ -449,7 +453,7 @@ void LLFloater360Capture::capture360Images()
     if (gSavedSettings.getBOOL("360CaptureHideAvatars"))
     {
         // Turn off the avatar if UI tells us to hide it.
-        // Note: the original call to gAvatar.hide(FALSE) did *not* hide
+        // Note: the original call to gAvatar.hide(false) did *not* hide
         // attachments and so for most residents, there would be some debris
         // left behind in the snapshot.
         // Note: this toggles so if it set to on, this will turn it off and
@@ -458,7 +462,7 @@ void LLFloater360Capture::capture360Images()
         // was set to off - I think this is what we need
         LLPipeline::toggleRenderTypeControl(LLPipeline::RENDER_TYPE_AVATAR);
         LLPipeline::toggleRenderTypeControl(LLPipeline::RENDER_TYPE_PARTICLES);
-        LLPipeline::sRenderAttachedLights = FALSE;
+        LLPipeline::sRenderAttachedLights = false;
     }
 
     // these are the 6 directions we will point the camera - essentially,
@@ -807,7 +811,7 @@ void LLFloater360Capture::freezeWorld(bool enable)
     {
         // restart the clouds moving if they were not paused before
         // we starting using the 360 capture floater
-        if (clouds_scroll_paused == false)
+        if (!clouds_scroll_paused)
         {
             LLEnvironment::instance().resumeCloudScroll();
         }
diff --git a/indra/newview/llfloater360capture.h b/indra/newview/llfloater360capture.h
index 3fb2c7f3c7..f0b4057645 100644
--- a/indra/newview/llfloater360capture.h
+++ b/indra/newview/llfloater360capture.h
@@ -46,7 +46,7 @@ class LLFloater360Capture:
         LLFloater360Capture(const LLSD& key);
 
         ~LLFloater360Capture();
-        BOOL postBuild() override;
+        bool postBuild() override;
         void onOpen(const LLSD& key) override;
         void handleMediaEvent(LLPluginClassMedia* self, EMediaEvent event) override;
 
diff --git a/indra/newview/llfloaterabout.cpp b/indra/newview/llfloaterabout.cpp
index ccedf84073..a6419f5ad4 100644
--- a/indra/newview/llfloaterabout.cpp
+++ b/indra/newview/llfloaterabout.cpp
@@ -83,7 +83,7 @@ private:
     virtual ~LLFloaterAbout();
 
 public:
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
 
     /// Obtain the data used to fill out the contents string. This is
     /// separated so that we can programmatically access the same info.
@@ -122,7 +122,7 @@ LLFloaterAbout::~LLFloaterAbout()
 {
 }
 
-BOOL LLFloaterAbout::postBuild()
+bool LLFloaterAbout::postBuild()
 {
     center();
     LLViewerTextEditor *support_widget =
@@ -157,7 +157,7 @@ BOOL LLFloaterAbout::postBuild()
     support_widget->blockUndo();
 
     // Fix views
-    support_widget->setEnabled(FALSE);
+    support_widget->setEnabled(false);
     support_widget->startOfDoc();
 
     // Get the names of contributors, extracted from .../doc/contributions.txt by viewer_manifest.py at build time
@@ -175,7 +175,7 @@ BOOL LLFloaterAbout::postBuild()
         LL_WARNS("AboutInit") << "Could not read contributors file at " << contributors_path << LL_ENDL;
     }
     contrib_names_widget->setText(contributors);
-    contrib_names_widget->setEnabled(FALSE);
+    contrib_names_widget->setEnabled(false);
     contrib_names_widget->startOfDoc();
 
     // Get the Versions and Copyrights, created at build time
@@ -188,7 +188,7 @@ BOOL LLFloaterAbout::postBuild()
         licenses_widget->clear();
         while ( std::getline(licenses_file, license_line) )
         {
-            licenses_widget->appendText(license_line+"\n", FALSE,
+            licenses_widget->appendText(license_line+"\n", false,
                                         LLStyle::Params() .color(about_color));
         }
         licenses_file.close();
@@ -198,10 +198,10 @@ BOOL LLFloaterAbout::postBuild()
         // this case will use the (out of date) hard coded value from the XUI
         LL_INFOS("AboutInit") << "Could not read licenses file at " << licenses_path << LL_ENDL;
     }
-    licenses_widget->setEnabled(FALSE);
+    licenses_widget->setEnabled(false);
     licenses_widget->startOfDoc();
 
-    return TRUE;
+    return true;
 }
 
 LLSD LLFloaterAbout::getInfo()
@@ -337,7 +337,7 @@ void LLFloaterAbout::setSupportText(const std::string& server_release_notes_url)
     LLUIColor about_color = LLUIColorTable::instance().getColor("TextFgReadOnlyColor");
     support_widget->clear();
     support_widget->appendText(LLAppViewer::instance()->getViewerInfoString(),
-                               FALSE, LLStyle::Params() .color(about_color));
+                               false, LLStyle::Params() .color(about_color));
 }
 
 //This is bound as a callback in postBuild()
@@ -354,11 +354,11 @@ void LLFloaterAbout::setUpdateListener()
     //   => update ready for install
     //version directory, .done file and either .skip or .next file exists
     //   => update deferred
-    BOOL downloads = false;
+    bool downloads = false;
     std::string downloadDir = "";
-    BOOL done = false;
-    BOOL next = false;
-    BOOL skip = false;
+    bool done = false;
+    bool next = false;
+    bool skip = false;
 
     LLSD info(LLFloaterAbout::getInfo());
     std::string version = info["VIEWER_VERSION_STR"].asString();
diff --git a/indra/newview/llfloateraddpaymentmethod.cpp b/indra/newview/llfloateraddpaymentmethod.cpp
index 4df993e49f..fc962ce89f 100644
--- a/indra/newview/llfloateraddpaymentmethod.cpp
+++ b/indra/newview/llfloateraddpaymentmethod.cpp
@@ -41,12 +41,12 @@ LLFloaterAddPaymentMethod::~LLFloaterAddPaymentMethod()
 {
 }
 
-BOOL LLFloaterAddPaymentMethod::postBuild()
+bool LLFloaterAddPaymentMethod::postBuild()
 {
-    setCanDrag(FALSE);
+    setCanDrag(false);
     getChild<LLButton>("continue_btn")->setCommitCallback(boost::bind(&LLFloaterAddPaymentMethod::onContinueBtn, this));
     getChild<LLButton>("close_btn")->setCommitCallback(boost::bind(&LLFloaterAddPaymentMethod::onCloseBtn, this));
-    return TRUE;
+    return true;
 }
 
 void LLFloaterAddPaymentMethod::onOpen(const LLSD& key)
diff --git a/indra/newview/llfloateraddpaymentmethod.h b/indra/newview/llfloateraddpaymentmethod.h
index a513893d70..252caf8f5b 100644
--- a/indra/newview/llfloateraddpaymentmethod.h
+++ b/indra/newview/llfloateraddpaymentmethod.h
@@ -34,8 +34,8 @@ class LLFloaterAddPaymentMethod:
 {
     friend class LLFloaterReg;
 public:
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void onOpen(const LLSD& key);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
 
 private:
     LLFloaterAddPaymentMethod(const LLSD& key);
diff --git a/indra/newview/llfloaterauction.cpp b/indra/newview/llfloaterauction.cpp
index f4a9400120..a87ddfd76e 100644
--- a/indra/newview/llfloaterauction.cpp
+++ b/indra/newview/llfloaterauction.cpp
@@ -43,7 +43,6 @@
 #include "llmimetypes.h"
 #include "llnotifications.h"
 #include "llnotificationsutil.h"
-#include "llsavedsettingsglue.h"
 #include "llviewertexturelist.h"
 #include "llviewerparcelmgr.h"
 #include "llviewerregion.h"
@@ -87,9 +86,9 @@ LLFloaterAuction::~LLFloaterAuction()
 {
 }
 
-BOOL LLFloaterAuction::postBuild()
+bool LLFloaterAuction::postBuild()
 {
-    return TRUE;
+    return true;
 }
 
 void LLFloaterAuction::onOpen(const LLSD& key)
@@ -111,9 +110,9 @@ void LLFloaterAuction::initialize()
         mParcelUpdateCapUrl = region->getCapability("ParcelPropertiesUpdate");
 
         getChild<LLUICtrl>("parcel_text")->setValue(parcelp->getName());
-        getChildView("snapshot_btn")->setEnabled(TRUE);
-        getChildView("reset_parcel_btn")->setEnabled(TRUE);
-        getChildView("start_auction_btn")->setEnabled(TRUE);
+        getChildView("snapshot_btn")->setEnabled(true);
+        getChildView("reset_parcel_btn")->setEnabled(true);
+        getChildView("start_auction_btn")->setEnabled(true);
 
         U32 estate_id = LLEstateInfoModel::instance().getID();
         // Only enable "Sell to Anyone" on Teen grid or if we don't know the ID yet
@@ -178,18 +177,20 @@ void LLFloaterAuction::onClickSnapshot(void* data)
     LLPointer<LLImageRaw> raw = new LLImageRaw;
 
     gForceRenderLandFence = self->getChild<LLUICtrl>("fence_check")->getValue().asBoolean();
-    BOOL success = gViewerWindow->rawSnapshot(raw,
+    bool success = gViewerWindow->rawSnapshot(raw,
                                               gViewerWindow->getWindowWidthScaled(),
                                               gViewerWindow->getWindowHeightScaled(),
-                                              TRUE,
-                                              FALSE,
-                                              FALSE, //UI
-                                              FALSE, //HUD
-                                              FALSE);
-    gForceRenderLandFence = FALSE;
+                                              true,
+                                              false,
+                                              false, //UI
+                                              false, //HUD
+                                              false);
+    gForceRenderLandFence = false;
 
     if (success)
     {
+        LLImageDataLock lock(raw);
+
         self->mTransactionID.generate();
         self->mImageID = self->mTransactionID.makeAssetID(gAgent.getSecureSessionID());
 
@@ -215,7 +216,7 @@ void LLFloaterAuction::onClickSnapshot(void* data)
         LLFileSystem j2c_file(self->mImageID, LLAssetType::AT_TEXTURE, LLFileSystem::WRITE);
         j2c_file.write(j2c->getData(), j2c->getDataSize());
 
-        self->mImage = LLViewerTextureManager::getLocalTexture((LLImageRaw*)raw, FALSE);
+        self->mImage = LLViewerTextureManager::getLocalTexture((LLImageRaw*)raw, false);
         gGL.getTexUnit(0)->bind(self->mImage);
         self->mImage->setAddressMode(LLTexUnit::TAM_CLAMP);
     }
@@ -239,14 +240,14 @@ void LLFloaterAuction::onClickStartAuction(void* data)
         gAssetStorage->storeAssetData(self->mTransactionID, LLAssetType::AT_IMAGE_TGA,
                                     &auction_tga_upload_done,
                                     (void*)name,
-                                    FALSE);
+                                    false);
         self->getWindow()->incBusyCount();
 
         std::string* j2c_name = new std::string(parcel_name.asString());
         gAssetStorage->storeAssetData(self->mTransactionID, LLAssetType::AT_TEXTURE,
                                    &auction_j2c_upload_done,
                                    (void*)j2c_name,
-                                   FALSE);
+                                   false);
         self->getWindow()->incBusyCount();
 
         LLNotificationsUtil::add("UploadingAuctionSnapshot");
diff --git a/indra/newview/llfloaterauction.h b/indra/newview/llfloaterauction.h
index 3514d6cc3c..d736b36db1 100644
--- a/indra/newview/llfloaterauction.h
+++ b/indra/newview/llfloaterauction.h
@@ -47,8 +47,8 @@ class LLFloaterAuction : public LLFloater
     friend class LLFloaterReg;
 public:
     // LLFloater interface
-    /*virtual*/ void onOpen(const LLSD& key);
-    /*virtual*/ void draw();
+    void onOpen(const LLSD& key) override;
+    void draw() override;
 
 private:
 
@@ -63,7 +63,7 @@ private:
     bool onSellToAnyoneConfirmed(const LLSD& notification, const LLSD& response);   // Sell confirmation clicked
     static void onClickStartAuction(void* data);
 
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
 
     void doResetParcel();
     void doSellToAnyone();
diff --git a/indra/newview/llfloaterautoreplacesettings.cpp b/indra/newview/llfloaterautoreplacesettings.cpp
index bdcaf2dc22..99f24e161e 100644
--- a/indra/newview/llfloaterautoreplacesettings.cpp
+++ b/indra/newview/llfloaterautoreplacesettings.cpp
@@ -82,7 +82,7 @@ void LLFloaterAutoReplaceSettings::onClose(bool app_quitting)
     cleanUp();
 }
 
-BOOL LLFloaterAutoReplaceSettings::postBuild(void)
+bool LLFloaterAutoReplaceSettings::postBuild(void)
 {
     // get copies of the current settings that we will operate on
     mEnabled  = gSavedSettings.getBOOL("AutoReplace");
diff --git a/indra/newview/llfloaterautoreplacesettings.h b/indra/newview/llfloaterautoreplacesettings.h
index 7f1953d485..94a7c00c15 100644
--- a/indra/newview/llfloaterautoreplacesettings.h
+++ b/indra/newview/llfloaterautoreplacesettings.h
@@ -40,10 +40,8 @@ class LLFloaterAutoReplaceSettings : public LLFloater
 public:
     LLFloaterAutoReplaceSettings(const LLSD& key);
 
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void onClose(bool app_quitting);
-
-    void setData(void * data);
+    bool postBuild() override;
+    void onClose(bool app_quitting) override;
 
 private:
 
diff --git a/indra/newview/llfloateravatar.cpp b/indra/newview/llfloateravatar.cpp
index 929a7addb4..6a38d7549c 100644
--- a/indra/newview/llfloateravatar.cpp
+++ b/indra/newview/llfloateravatar.cpp
@@ -52,7 +52,7 @@ LLFloaterAvatar::~LLFloaterAvatar()
     }
 }
 
-BOOL LLFloaterAvatar::postBuild()
+bool LLFloaterAvatar::postBuild()
 {
     mAvatarPicker = findChild<LLMediaCtrl>("avatar_picker_contents");
     if (mAvatarPicker)
@@ -60,7 +60,7 @@ BOOL LLFloaterAvatar::postBuild()
         mAvatarPicker->clearCache();
     }
     enableResizeCtrls(true, true, false);
-    return TRUE;
+    return true;
 }
 
 
diff --git a/indra/newview/llfloateravatar.h b/indra/newview/llfloateravatar.h
index 0832eef665..fb591c8306 100644
--- a/indra/newview/llfloateravatar.h
+++ b/indra/newview/llfloateravatar.h
@@ -37,8 +37,8 @@ class LLFloaterAvatar:
     friend class LLFloaterReg;
 private:
     LLFloaterAvatar(const LLSD& key);
-    /*virtual*/ ~LLFloaterAvatar();
-    /*virtual*/ BOOL postBuild();
+    ~LLFloaterAvatar();
+    bool postBuild() override;
 
     LLMediaCtrl* mAvatarPicker;
 };
diff --git a/indra/newview/llfloateravatarpicker.cpp b/indra/newview/llfloateravatarpicker.cpp
index f903b1bd8d..6087e6c0ee 100644
--- a/indra/newview/llfloateravatarpicker.cpp
+++ b/indra/newview/llfloateravatarpicker.cpp
@@ -61,9 +61,9 @@ static const U32 AVATAR_PICKER_SEARCH_TIMEOUT = 180U;
 static std::map<LLUUID, LLAvatarName> sAvatarNameMap;
 
 LLFloaterAvatarPicker* LLFloaterAvatarPicker::show(select_callback_t callback,
-                                                   BOOL allow_multiple,
-                                                   BOOL closeOnSelect,
-                                                   BOOL skip_agent,
+                                                   bool allow_multiple,
+                                                   bool closeOnSelect,
+                                                   bool skip_agent,
                                                    const std::string& name,
                                                    LLView * frustumOrigin)
 {
@@ -78,7 +78,7 @@ LLFloaterAvatarPicker* LLFloaterAvatarPicker::show(select_callback_t callback,
 
     floater->mSelectionCallback = callback;
     floater->setAllowMultiple(allow_multiple);
-    floater->mNearMeListComplete = FALSE;
+    floater->mNearMeListComplete = false;
     floater->mCloseOnSelect = closeOnSelect;
     floater->mExcludeAgentFromSearchResults = skip_agent;
 
@@ -103,9 +103,9 @@ LLFloaterAvatarPicker* LLFloaterAvatarPicker::show(select_callback_t callback,
 LLFloaterAvatarPicker::LLFloaterAvatarPicker(const LLSD& key)
   : LLFloater(key),
     mNumResultsReturned(0),
-    mNearMeListComplete(FALSE),
-    mCloseOnSelect(FALSE),
-    mExcludeAgentFromSearchResults(FALSE),
+    mNearMeListComplete(false),
+    mCloseOnSelect(false),
+    mExcludeAgentFromSearchResults(false),
     mContextConeOpacity (0.f),
     mContextConeInAlpha(CONTEXT_CONE_IN_ALPHA),
     mContextConeOutAlpha(CONTEXT_CONE_OUT_ALPHA),
@@ -114,19 +114,19 @@ LLFloaterAvatarPicker::LLFloaterAvatarPicker(const LLSD& key)
     mCommitCallbackRegistrar.add("Refresh.FriendList", boost::bind(&LLFloaterAvatarPicker::populateFriend, this));
 }
 
-BOOL LLFloaterAvatarPicker::postBuild()
+bool LLFloaterAvatarPicker::postBuild()
 {
     getChild<LLLineEditor>("Edit")->setKeystrokeCallback( boost::bind(&LLFloaterAvatarPicker::editKeystroke, this, _1, _2),NULL);
 
     childSetAction("Find", boost::bind(&LLFloaterAvatarPicker::onBtnFind, this));
-    getChildView("Find")->setEnabled(FALSE);
+    getChildView("Find")->setEnabled(false);
     childSetAction("Refresh", boost::bind(&LLFloaterAvatarPicker::onBtnRefresh, this));
     getChild<LLUICtrl>("near_me_range")->setCommitCallback(boost::bind(&LLFloaterAvatarPicker::onRangeAdjust, this));
 
     LLScrollListCtrl* searchresults = getChild<LLScrollListCtrl>("SearchResults");
     searchresults->setDoubleClickCallback( boost::bind(&LLFloaterAvatarPicker::onBtnSelect, this));
     searchresults->setCommitCallback(boost::bind(&LLFloaterAvatarPicker::onList, this));
-    getChildView("SearchResults")->setEnabled(FALSE);
+    getChildView("SearchResults")->setEnabled(false);
 
     LLScrollListCtrl* nearme = getChild<LLScrollListCtrl>("NearMe");
     nearme->setDoubleClickCallback(boost::bind(&LLFloaterAvatarPicker::onBtnSelect, this));
@@ -137,10 +137,10 @@ BOOL LLFloaterAvatarPicker::postBuild()
     getChild<LLUICtrl>("Friends")->setCommitCallback(boost::bind(&LLFloaterAvatarPicker::onList, this));
 
     childSetAction("ok_btn", boost::bind(&LLFloaterAvatarPicker::onBtnSelect, this));
-    getChildView("ok_btn")->setEnabled(FALSE);
+    getChildView("ok_btn")->setEnabled(false);
     childSetAction("cancel_btn", boost::bind(&LLFloaterAvatarPicker::onBtnClose, this));
 
-    getChild<LLUICtrl>("Edit")->setFocus(TRUE);
+    getChild<LLUICtrl>("Edit")->setFocus(true);
 
     LLPanel* search_panel = getChild<LLPanel>("SearchPanel");
     if (search_panel)
@@ -154,13 +154,13 @@ BOOL LLFloaterAvatarPicker::postBuild()
     getChild<LLTabContainer>("ResidentChooserTabs")->setCommitCallback(
         boost::bind(&LLFloaterAvatarPicker::onTabChanged, this));
 
-    setAllowMultiple(FALSE);
+    setAllowMultiple(false);
 
     center();
 
     populateFriend();
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterAvatarPicker::setOkBtnEnableCb(validate_callback_t cb)
@@ -248,12 +248,12 @@ void LLFloaterAvatarPicker::onBtnSelect()
             mSelectionCallback(avatar_ids, avatar_names);
         }
     }
-    getChild<LLScrollListCtrl>("SearchResults")->deselectAllItems(TRUE);
-    getChild<LLScrollListCtrl>("NearMe")->deselectAllItems(TRUE);
-    getChild<LLScrollListCtrl>("Friends")->deselectAllItems(TRUE);
+    getChild<LLScrollListCtrl>("SearchResults")->deselectAllItems(true);
+    getChild<LLScrollListCtrl>("NearMe")->deselectAllItems(true);
+    getChild<LLScrollListCtrl>("Friends")->deselectAllItems(true);
     if(mCloseOnSelect)
     {
-        mCloseOnSelect = FALSE;
+        mCloseOnSelect = false;
         closeFloater();
     }
 }
@@ -262,7 +262,7 @@ void LLFloaterAvatarPicker::onBtnRefresh()
 {
     getChild<LLScrollListCtrl>("NearMe")->deleteAllItems();
     getChild<LLScrollListCtrl>("NearMe")->setCommentText(getString("searching"));
-    mNearMeListComplete = FALSE;
+    mNearMeListComplete = false;
 }
 
 void LLFloaterAvatarPicker::onBtnClose()
@@ -282,8 +282,8 @@ void LLFloaterAvatarPicker::onList()
 
 void LLFloaterAvatarPicker::populateNearMe()
 {
-    BOOL all_loaded = TRUE;
-    BOOL empty = TRUE;
+    bool all_loaded = true;
+    bool empty = true;
     LLScrollListCtrl* near_me_scroller = getChild<LLScrollListCtrl>("NearMe");
     near_me_scroller->deleteAllItems();
 
@@ -301,7 +301,7 @@ void LLFloaterAvatarPicker::populateNearMe()
         {
             element["columns"][0]["column"] = "name";
             element["columns"][0]["value"] = LLCacheName::getDefaultName();
-            all_loaded = FALSE;
+            all_loaded = false;
         }
         else
         {
@@ -313,27 +313,27 @@ void LLFloaterAvatarPicker::populateNearMe()
             sAvatarNameMap[av] = av_name;
         }
         near_me_scroller->addElement(element);
-        empty = FALSE;
+        empty = false;
     }
 
     if (empty)
     {
-        getChildView("NearMe")->setEnabled(FALSE);
-        getChildView("ok_btn")->setEnabled(FALSE);
+        getChildView("NearMe")->setEnabled(false);
+        getChildView("ok_btn")->setEnabled(false);
         near_me_scroller->setCommentText(getString("no_one_near"));
     }
     else
     {
-        getChildView("NearMe")->setEnabled(TRUE);
-        getChildView("ok_btn")->setEnabled(TRUE);
+        getChildView("NearMe")->setEnabled(true);
+        getChildView("ok_btn")->setEnabled(true);
         near_me_scroller->selectFirstItem();
         onList();
-        near_me_scroller->setFocus(TRUE);
+        near_me_scroller->setFocus(true);
     }
 
     if (all_loaded)
     {
-        mNearMeListComplete = TRUE;
+        mNearMeListComplete = true;
     }
 }
 
@@ -353,7 +353,7 @@ void LLFloaterAvatarPicker::populateFriend()
     {
         friends_scroller->addStringUUIDItem(it->second, it->first);
     }
-    friends_scroller->sortByColumnIndex(0, TRUE);
+    friends_scroller->sortByColumnIndex(0, true);
 }
 
 void LLFloaterAvatarPicker::drawFrustum()
@@ -385,7 +385,7 @@ void LLFloaterAvatarPicker::draw()
     }
 }
 
-BOOL LLFloaterAvatarPicker::visibleItemsSelected() const
+bool LLFloaterAvatarPicker::visibleItemsSelected() const
 {
     LLPanel* active_panel = getChild<LLTabContainer>("ResidentChooserTabs")->getCurrentPanel();
 
@@ -401,7 +401,7 @@ BOOL LLFloaterAvatarPicker::visibleItemsSelected() const
     {
         return getChild<LLScrollListCtrl>("Friends")->getFirstSelectedIndex() >= 0;
     }
-    return FALSE;
+    return false;
 }
 
 /*static*/
@@ -501,11 +501,11 @@ void LLFloaterAvatarPicker::find()
     getChild<LLScrollListCtrl>("SearchResults")->deleteAllItems();
     getChild<LLScrollListCtrl>("SearchResults")->setCommentText(getString("searching"));
 
-    getChildView("ok_btn")->setEnabled(FALSE);
+    getChildView("ok_btn")->setEnabled(false);
     mNumResultsReturned = 0;
 }
 
-void LLFloaterAvatarPicker::setAllowMultiple(BOOL allow_multiple)
+void LLFloaterAvatarPicker::setAllowMultiple(bool allow_multiple)
 {
     getChild<LLScrollListCtrl>("SearchResults")->setAllowMultipleSelection(allow_multiple);
     getChild<LLScrollListCtrl>("NearMe")->setAllowMultipleSelection(allow_multiple);
@@ -536,8 +536,8 @@ LLScrollListCtrl* LLFloaterAvatarPicker::getActiveList()
     return list;
 }
 
-BOOL LLFloaterAvatarPicker::handleDragAndDrop(S32 x, S32 y, MASK mask,
-                                              BOOL drop, EDragAndDropType cargo_type,
+bool LLFloaterAvatarPicker::handleDragAndDrop(S32 x, S32 y, MASK mask,
+                                              bool drop, EDragAndDropType cargo_type,
                                               void *cargo_data, EAcceptance *accept,
                                               std::string& tooltip_msg)
 {
@@ -549,7 +549,7 @@ BOOL LLFloaterAvatarPicker::handleDragAndDrop(S32 x, S32 y, MASK mask,
         if (localRectToOtherView(rc_point, &rc_list, list))
         {
             // Keep selected only one item
-            list->deselectAllItems(TRUE);
+            list->deselectAllItems(true);
             list->selectItemAt(rc_list.mLeft, rc_list.mBottom, mask);
             LLScrollListItem* selection = list->getFirstSelected();
             if (selection)
@@ -571,7 +571,7 @@ BOOL LLFloaterAvatarPicker::handleDragAndDrop(S32 x, S32 y, MASK mask,
         }
     }
     *accept = ACCEPT_NO;
-    return TRUE;
+    return true;
 }
 
 
@@ -618,7 +618,7 @@ void LLFloaterAvatarPicker::processAvatarPickerReply(LLMessageSystem* msg, void*
         search_results->deleteAllItems();
     }
 
-    BOOL found_one = FALSE;
+    bool found_one = false;
     S32 num_new_rows = msg->getNumberOfBlocks("Data");
     for (S32 i = 0; i < num_new_rows; i++)
     {
@@ -634,14 +634,14 @@ void LLFloaterAvatarPicker::processAvatarPickerReply(LLMessageSystem* msg, void*
                 LLStringUtil::format_map_t map;
                 map["[TEXT]"] = floater->getChild<LLUICtrl>("Edit")->getValue().asString();
                 avatar_name = floater->getString("not_found", map);
-                search_results->setEnabled(FALSE);
-                floater->getChildView("ok_btn")->setEnabled(FALSE);
+                search_results->setEnabled(false);
+                floater->getChildView("ok_btn")->setEnabled(false);
             }
             else
             {
                 avatar_name = LLCacheName::buildFullName(first_name, last_name);
-                search_results->setEnabled(TRUE);
-                found_one = TRUE;
+                search_results->setEnabled(true);
+                found_one = true;
 
                 LLAvatarName av_name;
                 av_name.fromString(avatar_name);
@@ -659,10 +659,10 @@ void LLFloaterAvatarPicker::processAvatarPickerReply(LLMessageSystem* msg, void*
 
     if (found_one)
     {
-        floater->getChildView("ok_btn")->setEnabled(TRUE);
+        floater->getChildView("ok_btn")->setEnabled(true);
         search_results->selectFirstItem();
         floater->onList();
-        search_results->setFocus(TRUE);
+        search_results->setFocus(true);
     }
 }
 
@@ -724,14 +724,14 @@ void LLFloaterAvatarPicker::processResponse(const LLUUID& query_id, const LLSD&
             {
                 getChildView("ok_btn")->setEnabled(true);
                 search_results->setEnabled(true);
-                search_results->sortByColumnIndex(1, TRUE);
+                search_results->sortByColumnIndex(1, true);
                 std::string text = getChild<LLUICtrl>("Edit")->getValue().asString();
-                if (!search_results->selectItemByLabel(text, TRUE, 1))
+                if (!search_results->selectItemByLabel(text, true, 1))
                 {
                     search_results->selectFirstItem();
                 }
                 onList();
-                search_results->setFocus(TRUE);
+                search_results->setFocus(true);
             }
         }
     }
@@ -743,7 +743,7 @@ void LLFloaterAvatarPicker::editKeystroke(LLLineEditor* caller, void* user_data)
 }
 
 // virtual
-BOOL LLFloaterAvatarPicker::handleKeyHere(KEY key, MASK mask)
+bool LLFloaterAvatarPicker::handleKeyHere(KEY key, MASK mask)
 {
     if (key == KEY_RETURN && mask == MASK_NONE)
     {
@@ -755,12 +755,12 @@ BOOL LLFloaterAvatarPicker::handleKeyHere(KEY key, MASK mask)
         {
             onBtnSelect();
         }
-        return TRUE;
+        return true;
     }
     else if (key == KEY_ESCAPE && mask == MASK_NONE)
     {
         closeFloater();
-        return TRUE;
+        return true;
     }
 
     return LLFloater::handleKeyHere(key, mask);
diff --git a/indra/newview/llfloateravatarpicker.h b/indra/newview/llfloateravatarpicker.h
index f50b46f181..330f1a1226 100644
--- a/indra/newview/llfloateravatarpicker.h
+++ b/indra/newview/llfloateravatarpicker.h
@@ -46,29 +46,29 @@ public:
     typedef boost::function<void (const uuid_vec_t&, const std::vector<LLAvatarName>&)> select_callback_t;
     // Call this to select an avatar.
     static LLFloaterAvatarPicker* show(select_callback_t callback,
-                                       BOOL allow_multiple = FALSE,
-                                       BOOL closeOnSelect = FALSE,
-                                       BOOL skip_agent = FALSE,
+                                       bool allow_multiple = false,
+                                       bool closeOnSelect = false,
+                                       bool skip_agent = false,
                                        const std::string& name = "",
                                        LLView * frustumOrigin = NULL);
 
     LLFloaterAvatarPicker(const LLSD& key);
     virtual ~LLFloaterAvatarPicker();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     void setOkBtnEnableCb(validate_callback_t cb);
 
     static void processAvatarPickerReply(class LLMessageSystem* msg, void**);
     void processResponse(const LLUUID& query_id, const LLSD& content);
 
-    BOOL handleDragAndDrop(S32 x, S32 y, MASK mask,
-                           BOOL drop, EDragAndDropType cargo_type,
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask,
+                           bool drop, EDragAndDropType cargo_type,
                            void *cargo_data, EAcceptance *accept,
                            std::string& tooltip_msg);
 
     void openFriendsTab();
-    BOOL isExcludeAgentFromSearchResults() {return mExcludeAgentFromSearchResults;}
+    bool isExcludeAgentFromSearchResults() {return mExcludeAgentFromSearchResults;}
 
 private:
     void editKeystroke(class LLLineEditor* caller, void* user_data);
@@ -84,22 +84,22 @@ private:
 
     void populateNearMe();
     void populateFriend();
-    BOOL visibleItemsSelected() const; // Returns true if any items in the current tab are selected.
+    bool visibleItemsSelected() const; // Returns true if any items in the current tab are selected.
 
     static void findCoro(std::string url, LLUUID mQueryID, std::string mName);
     void find();
-    void setAllowMultiple(BOOL allow_multiple);
+    void setAllowMultiple(bool allow_multiple);
     LLScrollListCtrl* getActiveList();
 
     void drawFrustum();
     virtual void draw();
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool handleKeyHere(KEY key, MASK mask);
 
     LLUUID              mQueryID;
     int                 mNumResultsReturned;
-    BOOL                mNearMeListComplete;
-    BOOL                mCloseOnSelect;
-    BOOL                mExcludeAgentFromSearchResults;
+    bool                mNearMeListComplete;
+    bool                mCloseOnSelect;
+    bool                mExcludeAgentFromSearchResults;
     LLHandle <LLView>   mFrustumOrigin;
     F32                 mContextConeOpacity;
     F32                 mContextConeInAlpha;
diff --git a/indra/newview/llfloateravatarrendersettings.cpp b/indra/newview/llfloateravatarrendersettings.cpp
index bc860308b3..9101e6eb29 100644
--- a/indra/newview/llfloateravatarrendersettings.cpp
+++ b/indra/newview/llfloateravatarrendersettings.cpp
@@ -84,13 +84,13 @@ LLFloaterAvatarRenderSettings::~LLFloaterAvatarRenderSettings()
     LLRenderMuteList::getInstance()->removeObserver(&sAvatarRenderMuteListObserver);
 }
 
-BOOL LLFloaterAvatarRenderSettings::postBuild()
+bool LLFloaterAvatarRenderSettings::postBuild()
 {
     LLFloater::postBuild();
     mAvatarSettingsList = getChild<LLNameListCtrl>("render_settings_list");
     mAvatarSettingsList->setRightMouseDownCallback(boost::bind(&LLFloaterAvatarRenderSettings::onAvatarListRightClick, this, _1, _2, _3));
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterAvatarRenderSettings::draw()
@@ -224,10 +224,10 @@ void LLFloaterAvatarRenderSettings::onClickAdd(const LLSD& userdata)
         visual_setting = S32(LLVOAvatar::AV_ALWAYS_RENDER);
     }
 
-    LLView * button = findChild<LLButton>("plus_btn", TRUE);
+    LLView * button = findChild<LLButton>("plus_btn", true);
     LLFloater* root_floater = gFloaterView->getParentFloater(this);
     LLFloaterAvatarPicker * picker = LLFloaterAvatarPicker::show(boost::bind(&LLFloaterAvatarRenderSettings::callbackAvatarPicked, this, _1, visual_setting),
-                                                                    FALSE, TRUE, FALSE, root_floater->getName(), button);
+                                                                    false, true, false, root_floater->getName(), button);
 
     if (root_floater)
     {
@@ -259,14 +259,14 @@ void LLFloaterAvatarRenderSettings::setAvatarRenderSetting(const LLUUID& av_id,
     }
 }
 
-BOOL LLFloaterAvatarRenderSettings::handleKeyHere(KEY key, MASK mask )
+bool LLFloaterAvatarRenderSettings::handleKeyHere(KEY key, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (KEY_DELETE == key)
     {
         setAvatarRenderSetting(mAvatarSettingsList->getCurrentID(), (S32)LLVOAvatar::AV_RENDER_NORMALLY);
-        handled = TRUE;
+        handled = true;
     }
     return handled;
 }
diff --git a/indra/newview/llfloateravatarrendersettings.h b/indra/newview/llfloateravatarrendersettings.h
index 2e0a844afd..962a810f2d 100644
--- a/indra/newview/llfloateravatarrendersettings.h
+++ b/indra/newview/llfloateravatarrendersettings.h
@@ -40,10 +40,10 @@ public:
     LLFloaterAvatarRenderSettings(const LLSD& key);
     virtual ~LLFloaterAvatarRenderSettings();
 
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void onOpen(const LLSD& key);
-    /*virtual*/ void draw();
-    /*virtual*/ BOOL handleKeyHere(KEY key, MASK mask );
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
+    void draw() override;
+    bool handleKeyHere(KEY key, MASK mask) override;
 
     void onAvatarListRightClick(LLUICtrl* ctrl, S32 x, S32 y);
 
@@ -59,7 +59,6 @@ public:
 
 private:
     void callbackAvatarPicked(const uuid_vec_t& ids, S32 visual_setting);
-    void removePicker();
 
     bool mNeedsUpdate;
     LLListContextMenu* mContextMenu;
diff --git a/indra/newview/llfloateravatartextures.cpp b/indra/newview/llfloateravatartextures.cpp
index 023e1501f6..b85e3cb267 100644
--- a/indra/newview/llfloateravatartextures.cpp
+++ b/indra/newview/llfloateravatartextures.cpp
@@ -51,7 +51,7 @@ LLFloaterAvatarTextures::~LLFloaterAvatarTextures()
 {
 }
 
-BOOL LLFloaterAvatarTextures::postBuild()
+bool LLFloaterAvatarTextures::postBuild()
 {
     for (U32 i=0; i < TEX_NUM_INDICES; i++)
     {
@@ -63,7 +63,7 @@ BOOL LLFloaterAvatarTextures::postBuild()
     childSetAction("Dump", onClickDump, this);
 
     refresh();
-    return TRUE;
+    return true;
 }
 
 void LLFloaterAvatarTextures::draw()
diff --git a/indra/newview/llfloateravatartextures.h b/indra/newview/llfloateravatartextures.h
index ee94f58cf4..b92992e163 100644
--- a/indra/newview/llfloateravatartextures.h
+++ b/indra/newview/llfloateravatartextures.h
@@ -40,10 +40,10 @@ public:
     LLFloaterAvatarTextures(const LLSD& id);
     virtual ~LLFloaterAvatarTextures();
 
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void draw();
+    bool postBuild() override;
+    void draw() override;
 
-    void refresh();
+    void refresh() override;
 
 private:
     static void onClickDump(void*);
diff --git a/indra/newview/llfloaterbanduration.cpp b/indra/newview/llfloaterbanduration.cpp
index 6ba6c30cab..c9141322e3 100644
--- a/indra/newview/llfloaterbanduration.cpp
+++ b/indra/newview/llfloaterbanduration.cpp
@@ -35,16 +35,16 @@ LLFloaterBanDuration::LLFloaterBanDuration(const LLSD& target)
 {
 }
 
-BOOL LLFloaterBanDuration::postBuild()
+bool LLFloaterBanDuration::postBuild()
 {
     childSetAction("ok_btn", boost::bind(&LLFloaterBanDuration::onClickBan, this));
     childSetAction("cancel_btn", boost::bind(&LLFloaterBanDuration::onClickCancel, this));
 
     getChild<LLUICtrl>("ban_duration_radio")->setCommitCallback(boost::bind(&LLFloaterBanDuration::onClickRadio, this));
     getChild<LLRadioGroup>("ban_duration_radio")->setSelectedIndex(0);
-    getChild<LLUICtrl>("ban_hours")->setEnabled(FALSE);
+    getChild<LLUICtrl>("ban_hours")->setEnabled(false);
 
-    return TRUE;
+    return true;
 }
 
 LLFloaterBanDuration* LLFloaterBanDuration::show(select_callback_t callback, uuid_vec_t ids)
diff --git a/indra/newview/llfloaterbanduration.h b/indra/newview/llfloaterbanduration.h
index e8ec7cc669..4793b524f7 100644
--- a/indra/newview/llfloaterbanduration.h
+++ b/indra/newview/llfloaterbanduration.h
@@ -35,7 +35,7 @@ class LLFloaterBanDuration : public LLFloater
 
 public:
     LLFloaterBanDuration(const LLSD& target);
-    BOOL postBuild();
+    bool postBuild() override;
     static LLFloaterBanDuration* show(select_callback_t callback, uuid_vec_t id);
 
 private:
diff --git a/indra/newview/llfloaterbeacons.cpp b/indra/newview/llfloaterbeacons.cpp
index fb1da84e79..11c1c2a9f2 100644
--- a/indra/newview/llfloaterbeacons.cpp
+++ b/indra/newview/llfloaterbeacons.cpp
@@ -52,9 +52,9 @@ LLFloaterBeacons::LLFloaterBeacons(const LLSD& seed)
     mCommitCallbackRegistrar.add("Beacons.UICheck", boost::bind(&LLFloaterBeacons::onClickUICheck, this,_1));
 }
 
-BOOL LLFloaterBeacons::postBuild()
+bool LLFloaterBeacons::postBuild()
 {
-    return TRUE;
+    return true;
 }
 
 // Callback attached to each check box control to both affect their main purpose
@@ -73,10 +73,10 @@ void LLFloaterBeacons::onClickUICheck(LLUICtrl *ctrl)
             LLPipeline::getRenderScriptedBeacons() )
         {
             LLPipeline::setRenderScriptedBeacons(false);
-            getChild<LLCheckBoxCtrl>("scripted")->setControlValue(LLSD(FALSE));
-            getChild<LLCheckBoxCtrl>("scripted")->setValue(FALSE);
-            getChild<LLCheckBoxCtrl>("touch_only")->setControlValue(LLSD(TRUE)); // just to be sure it's in sync with llpipeline
-            getChild<LLCheckBoxCtrl>("touch_only")->setValue(TRUE);
+            getChild<LLCheckBoxCtrl>("scripted")->setControlValue(LLSD(false));
+            getChild<LLCheckBoxCtrl>("scripted")->setValue(false);
+            getChild<LLCheckBoxCtrl>("touch_only")->setControlValue(LLSD(true)); // just to be sure it's in sync with llpipeline
+            getChild<LLCheckBoxCtrl>("touch_only")->setValue(true);
         }
     }
     else if(name == "scripted")
@@ -88,10 +88,10 @@ void LLFloaterBeacons::onClickUICheck(LLUICtrl *ctrl)
             LLPipeline::getRenderScriptedBeacons() )
         {
             LLPipeline::setRenderScriptedTouchBeacons(false);
-            getChild<LLCheckBoxCtrl>("touch_only")->setControlValue(LLSD(FALSE));
-            getChild<LLCheckBoxCtrl>("touch_only")->setValue(FALSE);
-            getChild<LLCheckBoxCtrl>("scripted")->setControlValue(LLSD(TRUE)); // just to be sure it's in sync with llpipeline
-            getChild<LLCheckBoxCtrl>("scripted")->setValue(TRUE);
+            getChild<LLCheckBoxCtrl>("touch_only")->setControlValue(LLSD(false));
+            getChild<LLCheckBoxCtrl>("touch_only")->setValue(false);
+            getChild<LLCheckBoxCtrl>("scripted")->setControlValue(LLSD(true)); // just to be sure it's in sync with llpipeline
+            getChild<LLCheckBoxCtrl>("scripted")->setValue(true);
         }
     }
     else if(name == "physical")       LLPipeline::setRenderPhysicalBeacons(check->get());
@@ -107,10 +107,10 @@ void LLFloaterBeacons::onClickUICheck(LLUICtrl *ctrl)
             !LLPipeline::getRenderHighlights() )
         {
             LLPipeline::setRenderBeacons(true);
-            getChild<LLCheckBoxCtrl>("beacons")->setControlValue(LLSD(TRUE));
-            getChild<LLCheckBoxCtrl>("beacons")->setValue(TRUE);
-            getChild<LLCheckBoxCtrl>("highlights")->setControlValue(LLSD(FALSE)); // just to be sure it's in sync with llpipeline
-            getChild<LLCheckBoxCtrl>("highlights")->setValue(FALSE);
+            getChild<LLCheckBoxCtrl>("beacons")->setControlValue(LLSD(true));
+            getChild<LLCheckBoxCtrl>("beacons")->setValue(true);
+            getChild<LLCheckBoxCtrl>("highlights")->setControlValue(LLSD(false)); // just to be sure it's in sync with llpipeline
+            getChild<LLCheckBoxCtrl>("highlights")->setValue(false);
         }
     }
     else if(name == "beacons")
@@ -122,10 +122,10 @@ void LLFloaterBeacons::onClickUICheck(LLUICtrl *ctrl)
             !LLPipeline::getRenderHighlights() )
         {
             LLPipeline::setRenderHighlights(true);
-            getChild<LLCheckBoxCtrl>("highlights")->setControlValue(LLSD(TRUE));
-            getChild<LLCheckBoxCtrl>("highlights")->setValue(TRUE);
-            getChild<LLCheckBoxCtrl>("beacons")->setControlValue(LLSD(FALSE)); // just to be sure it's in sync with llpipeline
-            getChild<LLCheckBoxCtrl>("beacons")->setValue(FALSE);
+            getChild<LLCheckBoxCtrl>("highlights")->setControlValue(LLSD(true));
+            getChild<LLCheckBoxCtrl>("highlights")->setValue(true);
+            getChild<LLCheckBoxCtrl>("beacons")->setControlValue(LLSD(false)); // just to be sure it's in sync with llpipeline
+            getChild<LLCheckBoxCtrl>("beacons")->setValue(false);
         }
     }
 }
diff --git a/indra/newview/llfloaterbeacons.h b/indra/newview/llfloaterbeacons.h
index 629934c346..f54fb2a50a 100644
--- a/indra/newview/llfloaterbeacons.h
+++ b/indra/newview/llfloaterbeacons.h
@@ -36,7 +36,7 @@ class LLFloaterBeacons : public LLFloater
 
 public:
 
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
 
     // Needed to make the floater visibility toggle the beacons.
     // Too bad we can't just add control_name="BeaconAlwaysOn" to the XML.
diff --git a/indra/newview/llfloaterbigpreview.cpp b/indra/newview/llfloaterbigpreview.cpp
index 023607f9ab..ba682494bb 100644
--- a/indra/newview/llfloaterbigpreview.cpp
+++ b/indra/newview/llfloaterbigpreview.cpp
@@ -61,7 +61,7 @@ void LLFloaterBigPreview::closeOnFloaterOwnerClosing(LLFloater* floaterp)
     }
 }
 
-BOOL LLFloaterBigPreview::postBuild()
+bool LLFloaterBigPreview::postBuild()
 {
     mPreviewPlaceholder = getChild<LLUICtrl>("big_preview_placeholder");
     return LLFloater::postBuild();
diff --git a/indra/newview/llfloaterbigpreview.h b/indra/newview/llfloaterbigpreview.h
index 62e878233b..1d5804acf5 100644
--- a/indra/newview/llfloaterbigpreview.h
+++ b/indra/newview/llfloaterbigpreview.h
@@ -35,7 +35,7 @@ public:
     LLFloaterBigPreview(const LLSD& key);
     ~LLFloaterBigPreview();
 
-    BOOL postBuild();
+    bool postBuild();
     void draw();
     void onCancel();
 
diff --git a/indra/newview/llfloaterbuildoptions.cpp b/indra/newview/llfloaterbuildoptions.cpp
index 51139477a0..cf3c4d29f3 100644
--- a/indra/newview/llfloaterbuildoptions.cpp
+++ b/indra/newview/llfloaterbuildoptions.cpp
@@ -49,9 +49,9 @@ LLFloaterBuildOptions::LLFloaterBuildOptions(const LLSD& key)
 LLFloaterBuildOptions::~LLFloaterBuildOptions()
 {}
 
-BOOL LLFloaterBuildOptions::postBuild()
+bool LLFloaterBuildOptions::postBuild()
 {
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -63,5 +63,5 @@ void LLFloaterBuildOptions::onOpen(const LLSD& key)
 // virtual
 void LLFloaterBuildOptions::onClose(bool app_quitting)
 {
-    mObjectSelection = NULL;
+    mObjectSelection = nullptr;
 }
diff --git a/indra/newview/llfloaterbuildoptions.h b/indra/newview/llfloaterbuildoptions.h
index 7b550a7807..9b87e4d764 100644
--- a/indra/newview/llfloaterbuildoptions.h
+++ b/indra/newview/llfloaterbuildoptions.h
@@ -43,10 +43,10 @@ class LLFloaterBuildOptions
     :   public LLFloater
 {
 public:
-    virtual BOOL postBuild();
+    bool postBuild() override;
 
-    /*virtual*/ void onOpen(const LLSD& key);
-    /*virtual*/ void onClose(bool app_quitting);
+    void onOpen(const LLSD& key) override;
+    void onClose(bool app_quitting) override;
 
 private:
     friend class LLFloaterReg;
diff --git a/indra/newview/llfloaterbulkpermission.cpp b/indra/newview/llfloaterbulkpermission.cpp
index 243c546169..c09c02d32b 100644
--- a/indra/newview/llfloaterbulkpermission.cpp
+++ b/indra/newview/llfloaterbulkpermission.cpp
@@ -53,7 +53,7 @@
 
 LLFloaterBulkPermission::LLFloaterBulkPermission(const LLSD& seed)
 :   LLFloater(seed),
-    mDone(FALSE)
+    mDone(false)
 {
     mID.generate();
     mCommitCallbackRegistrar.add("BulkPermission.Ok",       boost::bind(&LLFloaterBulkPermission::onOkBtn, this));
@@ -64,7 +64,7 @@ LLFloaterBulkPermission::LLFloaterBulkPermission(const LLSD& seed)
     mCommitCallbackRegistrar.add("BulkPermission.CommitCopy",   boost::bind(&LLFloaterBulkPermission::onCommitCopy, this));
 }
 
-BOOL LLFloaterBulkPermission::postBuild()
+bool LLFloaterBulkPermission::postBuild()
 {
     mBulkChangeIncludeAnimations = gSavedSettings.getBOOL("BulkChangeIncludeAnimations");
     mBulkChangeIncludeBodyParts = gSavedSettings.getBOOL("BulkChangeIncludeBodyParts");
@@ -89,7 +89,7 @@ BOOL LLFloaterBulkPermission::postBuild()
     {
         mBulkChangeNextOwnerTransfer = true;
     }
-    return TRUE;
+    return true;
 }
 
 void LLFloaterBulkPermission::doApply()
@@ -120,7 +120,7 @@ void LLFloaterBulkPermission::doApply()
     }
     else
     {
-        mDone = FALSE;
+        mDone = false;
         if (!start())
         {
             LL_WARNS() << "Unexpected bulk permission change failure." << LL_ENDL;
@@ -204,16 +204,16 @@ void LLFloaterBulkPermission::onCloseBtn()
 void LLFloaterBulkPermission::onCommitCopy()
 {
     // Implements fair use
-    BOOL copyable = gSavedSettings.getBOOL("BulkChangeNextOwnerCopy");
+    bool copyable = gSavedSettings.getBOOL("BulkChangeNextOwnerCopy");
     if(!copyable)
     {
-        gSavedSettings.setBOOL("BulkChangeNextOwnerTransfer", TRUE);
+        gSavedSettings.setBOOL("BulkChangeNextOwnerTransfer", true);
     }
     LLCheckBoxCtrl* xfer =getChild<LLCheckBoxCtrl>("next_owner_transfer");
     xfer->setEnabled(copyable);
 }
 
-BOOL LLFloaterBulkPermission::start()
+bool LLFloaterBulkPermission::start()
 {
     // note: number of top-level objects to modify is mObjectIDs.size().
     getChild<LLScrollListCtrl>("queue output")->setCommentText(getString("start_text"));
@@ -221,10 +221,10 @@ BOOL LLFloaterBulkPermission::start()
 }
 
 // Go to the next object and start if found. Returns false if no objects left, true otherwise.
-BOOL LLFloaterBulkPermission::nextObject()
+bool LLFloaterBulkPermission::nextObject()
 {
-    S32 count;
-    BOOL successful_start = FALSE;
+    size_t count;
+    bool successful_start = false;
     do
     {
         count = mObjectIDs.size();
@@ -240,18 +240,18 @@ BOOL LLFloaterBulkPermission::nextObject()
     if(isDone() && !mDone)
     {
         getChild<LLScrollListCtrl>("queue output")->setCommentText(getString("done_text"));
-        mDone = TRUE;
+        mDone = true;
     }
     return successful_start;
 }
 
 // Pop the top object off of the queue.
-// Return TRUE if the queue has started, otherwise FALSE.
-BOOL LLFloaterBulkPermission::popNext()
+// Return true if the queue has started, otherwise false.
+bool LLFloaterBulkPermission::popNext()
 {
     // get the head element from the container, and attempt to get its inventory.
-    BOOL rv = FALSE;
-    S32 count = mObjectIDs.size();
+    bool rv = false;
+    auto count = mObjectIDs.size();
     if(mCurrentObjectID.isNull() && (count > 0))
     {
         mCurrentObjectID = mObjectIDs.at(0);
@@ -264,7 +264,7 @@ BOOL LLFloaterBulkPermission::popNext()
             LLUUID* id = new LLUUID(mID);
             registerVOInventoryListener(obj,id);
             requestVOInventory();
-            rv = TRUE;
+            rv = true;
         }
         else
         {
@@ -276,7 +276,7 @@ BOOL LLFloaterBulkPermission::popNext()
 }
 
 
-void LLFloaterBulkPermission::doCheckUncheckAll(BOOL check)
+void LLFloaterBulkPermission::doCheckUncheckAll(bool check)
 {
     gSavedSettings.setBOOL("BulkChangeIncludeAnimations", check);
     gSavedSettings.setBOOL("BulkChangeIncludeBodyParts" , check);
@@ -352,7 +352,7 @@ void LLFloaterBulkPermission::handleInventory(LLViewerObject* viewer_obj, LLInve
                     perm.setMaskEveryone(LLFloaterPerms::getEveryonePerms("BulkChange"));
                     perm.setMaskGroup(LLFloaterPerms::getGroupPerms("BulkChange"));
                     new_item->setPermissions(perm); // here's the beef
-                    updateInventory(object,new_item,TASK_INVENTORY_ITEM_KEY,FALSE);
+                    updateInventory(object,new_item,TASK_INVENTORY_ITEM_KEY,false);
                     //status_text.setArg("[STATUS]", getString("status_ok_text"));
                     status_text.setArg("[STATUS]", "");
                 }
diff --git a/indra/newview/llfloaterbulkpermission.h b/indra/newview/llfloaterbulkpermission.h
index a1f6b3d898..23ca45b611 100644
--- a/indra/newview/llfloaterbulkpermission.h
+++ b/indra/newview/llfloaterbulkpermission.h
@@ -41,16 +41,16 @@ class LLFloaterBulkPermission : public LLFloater, public LLVOInventoryListener
     friend class LLFloaterReg;
 public:
 
-    BOOL postBuild();
+    bool postBuild();
 
 private:
 
     LLFloaterBulkPermission(const LLSD& seed);
     virtual ~LLFloaterBulkPermission() {}
 
-    BOOL start(); // returns TRUE if the queue has started, otherwise FALSE.
-    BOOL nextObject();
-    BOOL popNext();
+    bool start(); // returns true if the queue has started, otherwise false.
+    bool nextObject();
+    bool popNext();
 
     // This is the callback method for the viewer object currently
     // being worked on.
@@ -73,15 +73,15 @@ private:
     void onOkBtn();
     void onApplyBtn();
     void onCommitCopy();
-    void onCheckAll() { doCheckUncheckAll(TRUE); }
-    void onUncheckAll() { doCheckUncheckAll(FALSE); }
+    void onCheckAll() { doCheckUncheckAll(true); }
+    void onUncheckAll() { doCheckUncheckAll(false); }
 
     // returns true if this is done
-    BOOL isDone() const { return (mCurrentObjectID.isNull() || (mObjectIDs.size() == 0)); }
+    bool isDone() const { return (mCurrentObjectID.isNull() || (mObjectIDs.size() == 0)); }
 
     //Read the settings and Apply the permissions
     void doApply();
-    void doCheckUncheckAll(BOOL check);
+    void doCheckUncheckAll(bool check);
 
 private:
     // UI
@@ -91,7 +91,7 @@ private:
     // Object Queue
     std::vector<LLUUID> mObjectIDs;
     LLUUID mCurrentObjectID;
-    BOOL mDone;
+    bool mDone;
 
     bool mBulkChangeIncludeAnimations;
     bool mBulkChangeIncludeBodyParts;
diff --git a/indra/newview/llfloaterbump.cpp b/indra/newview/llfloaterbump.cpp
index 8138a3c976..162ad5e108 100644
--- a/indra/newview/llfloaterbump.cpp
+++ b/indra/newview/llfloaterbump.cpp
@@ -77,7 +77,7 @@ LLFloaterBump::~LLFloaterBump()
     }
 }
 
-BOOL LLFloaterBump::postBuild()
+bool LLFloaterBump::postBuild()
 {
     mList = getChild<LLScrollListCtrl>("bump_list");
     mList->setAllowMultipleSelection(false);
@@ -93,7 +93,7 @@ BOOL LLFloaterBump::postBuild()
         menu->setItemVisible(std::string("Impostor seperator"), false);
     }
 
-    return TRUE;
+    return true;
 }
 // virtual
 void LLFloaterBump::onOpen(const LLSD& key)
diff --git a/indra/newview/llfloaterbump.h b/indra/newview/llfloaterbump.h
index 0ca7df50dd..53e730d73f 100644
--- a/indra/newview/llfloaterbump.h
+++ b/indra/newview/llfloaterbump.h
@@ -43,8 +43,8 @@ protected:
     void onScrollListRightClicked(LLUICtrl* ctrl, S32 x, S32 y);
 
 public:
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void onOpen(const LLSD& key);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
 
     static LLFloaterBump* getInstance();
 
diff --git a/indra/newview/llfloaterbuy.cpp b/indra/newview/llfloaterbuy.cpp
index ff2922e2ac..7d2d836689 100644
--- a/indra/newview/llfloaterbuy.cpp
+++ b/indra/newview/llfloaterbuy.cpp
@@ -54,10 +54,10 @@ LLFloaterBuy::LLFloaterBuy(const LLSD& key)
 {
 }
 
-BOOL LLFloaterBuy::postBuild()
+bool LLFloaterBuy::postBuild()
 {
-    getChildView("object_list")->setEnabled(FALSE);
-    getChildView("item_list")->setEnabled(FALSE);
+    getChildView("object_list")->setEnabled(false);
+    getChildView("item_list")->setEnabled(false);
 
     getChild<LLUICtrl>("cancel_btn")->setCommitCallback( boost::bind(&LLFloaterBuy::onClickCancel, this));
     getChild<LLUICtrl>("buy_btn")->setCommitCallback( boost::bind(&LLFloaterBuy::onClickBuy, this));
@@ -70,12 +70,12 @@ BOOL LLFloaterBuy::postBuild()
     // mid-session and the saved rect is off-center.
     center();
 
-    return TRUE;
+    return true;
 }
 
 LLFloaterBuy::~LLFloaterBuy()
 {
-    mObjectSelection = NULL;
+    mObjectSelection = nullptr;
 }
 
 void LLFloaterBuy::reset()
@@ -128,7 +128,7 @@ void LLFloaterBuy::show(const LLSaleInfo& sale_info)
 
     LLUUID owner_id;
     std::string owner_name;
-    BOOL owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, owner_name);
+    bool owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, owner_name);
     if (!owners_identical)
     {
         LLNotificationsUtil::add("BuyObjectOneOwner");
@@ -246,12 +246,12 @@ void LLFloaterBuy::inventoryChanged(LLViewerObject* obj,
         LLSD row;
 
         // Compute icon for this item
-        BOOL item_is_multi = FALSE;
+        bool item_is_multi = false;
         if (( inv_item->getFlags() & LLInventoryItemFlags::II_FLAGS_LANDMARK_VISITED
             || inv_item->getFlags() & LLInventoryItemFlags::II_FLAGS_OBJECT_HAS_MULTIPLE_ITEMS)
             && !(inv_item->getFlags() & LLInventoryItemFlags::II_FLAGS_SUBTYPE_MASK))
         {
-            item_is_multi = TRUE;
+            item_is_multi = true;
         }
 
         std::string icon_name = LLInventoryIcon::getIconName(inv_item->getType(),
diff --git a/indra/newview/llfloaterbuy.h b/indra/newview/llfloaterbuy.h
index 41e0161ed5..8c8a3efc64 100644
--- a/indra/newview/llfloaterbuy.h
+++ b/indra/newview/llfloaterbuy.h
@@ -49,19 +49,18 @@ public:
     LLFloaterBuy(const LLSD& key);
     ~LLFloaterBuy();
 
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void onClose(bool app_quitting);
+    bool postBuild() override;
+    void onClose(bool app_quitting) override;
 
     static void show(const LLSaleInfo& sale_info);
 
 protected:
     void reset();
 
-    void requestObjectInventories();
-    /*virtual*/ void inventoryChanged(LLViewerObject* obj,
-                                 LLInventoryObject::object_list_t* inv,
-                                 S32 serial_num,
-                                 void* data);
+    void inventoryChanged(LLViewerObject* obj,
+        LLInventoryObject::object_list_t* inv,
+        S32 serial_num,
+        void* data) override;
 
     void onSelectionChanged();
     void showViews(bool show);
diff --git a/indra/newview/llfloaterbuycontents.cpp b/indra/newview/llfloaterbuycontents.cpp
index 955dc79f13..ae4dfb8d42 100644
--- a/indra/newview/llfloaterbuycontents.cpp
+++ b/indra/newview/llfloaterbuycontents.cpp
@@ -57,15 +57,15 @@ LLFloaterBuyContents::LLFloaterBuyContents(const LLSD& key)
 {
 }
 
-BOOL LLFloaterBuyContents::postBuild()
+bool LLFloaterBuyContents::postBuild()
 {
 
     getChild<LLUICtrl>("cancel_btn")->setCommitCallback( boost::bind(&LLFloaterBuyContents::onClickCancel, this));
     getChild<LLUICtrl>("buy_btn")->setCommitCallback( boost::bind(&LLFloaterBuyContents::onClickBuy, this));
 
-    getChildView("item_list")->setEnabled(FALSE);
-    getChildView("buy_btn")->setEnabled(FALSE);
-    getChildView("wear_check")->setEnabled(FALSE);
+    getChildView("item_list")->setEnabled(false);
+    getChildView("buy_btn")->setEnabled(false);
+    getChildView("wear_check")->setEnabled(false);
 
     setDefaultBtn("cancel_btn"); // to avoid accidental buy (SL-43130)
 
@@ -75,7 +75,7 @@ BOOL LLFloaterBuyContents::postBuild()
     // mid-session and the saved rect is off-center.
     center();
 
-    return TRUE;
+    return true;
 }
 
 LLFloaterBuyContents::~LLFloaterBuyContents()
@@ -107,7 +107,7 @@ void LLFloaterBuyContents::show(const LLSaleInfo& sale_info)
 
     LLUUID owner_id;
     std::string owner_name;
-    BOOL owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, owner_name);
+    bool owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, owner_name);
     if (!owners_identical)
     {
         LLNotificationsUtil::add("BuyContentsOneOwner");
@@ -167,10 +167,10 @@ void LLFloaterBuyContents::inventoryChanged(LLViewerObject* obj,
 
     // default to turning off the buy button.
     LLView* buy_btn = getChildView("buy_btn");
-    buy_btn->setEnabled(FALSE);
+    buy_btn->setEnabled(false);
 
     LLUUID owner_id;
-    BOOL is_group_owned;
+    bool is_group_owned;
     LLAssetType::EType asset_type;
     LLInventoryType::EType inv_type;
     S32 wearable_count = 0;
@@ -208,17 +208,17 @@ void LLFloaterBuyContents::inventoryChanged(LLViewerObject* obj,
 
         // There will be at least one item shown in the display, so go
         // ahead and enable the buy button.
-        buy_btn->setEnabled(TRUE);
+        buy_btn->setEnabled(true);
 
         // Create the line in the list
         LLSD row;
 
-        BOOL item_is_multi = FALSE;
+        bool item_is_multi = false;
         if ((inv_item->getFlags() & LLInventoryItemFlags::II_FLAGS_LANDMARK_VISITED
             || inv_item->getFlags() & LLInventoryItemFlags::II_FLAGS_OBJECT_HAS_MULTIPLE_ITEMS)
             && !(inv_item->getFlags() & LLInventoryItemFlags::II_FLAGS_SUBTYPE_MASK))
         {
-            item_is_multi = TRUE;
+            item_is_multi = true;
         }
 
         std::string icon_name = LLInventoryIcon::getIconName(inv_item->getType(),
@@ -256,7 +256,7 @@ void LLFloaterBuyContents::inventoryChanged(LLViewerObject* obj,
 
     if (wearable_count > 0)
     {
-        getChildView("wear_check")->setEnabled(TRUE);
+        getChildView("wear_check")->setEnabled(true);
         getChild<LLUICtrl>("wear_check")->setValue(LLSD(false) );
     }
 }
@@ -276,7 +276,7 @@ void LLFloaterBuyContents::onClickBuy()
     // We may want to wear this item
     if (getChild<LLUICtrl>("wear_check")->getValue())
     {
-        LLInventoryState::sWearNewClothing = TRUE;
+        LLInventoryState::sWearNewClothing = true;
     }
 
     // Put the items where we put new folders.
diff --git a/indra/newview/llfloaterbuycontents.h b/indra/newview/llfloaterbuycontents.h
index c397b11400..cbb36d446d 100644
--- a/indra/newview/llfloaterbuycontents.h
+++ b/indra/newview/llfloaterbuycontents.h
@@ -48,14 +48,13 @@ public:
 
     LLFloaterBuyContents(const LLSD& key);
     ~LLFloaterBuyContents();
-    /*virtual*/ BOOL    postBuild();
+    bool postBuild() override;
 
 protected:
-    void requestObjectInventories();
-    /*virtual*/ void inventoryChanged(LLViewerObject* obj,
-                                 LLInventoryObject::object_list_t* inv,
-                                 S32 serial_num,
-                                 void* data);
+    void inventoryChanged(LLViewerObject* obj,
+        LLInventoryObject::object_list_t* inv,
+        S32 serial_num,
+        void* data) override;
 
     void onClickBuy();
     void onClickCancel();
diff --git a/indra/newview/llfloaterbuycurrency.cpp b/indra/newview/llfloaterbuycurrency.cpp
index e1bc110061..e41f893c43 100644
--- a/indra/newview/llfloaterbuycurrency.cpp
+++ b/indra/newview/llfloaterbuycurrency.cpp
@@ -66,13 +66,13 @@ public:
     void noTarget();
     void target(const std::string& name, S32 price);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     void updateUI();
     void collapsePanels(bool collapse);
 
     virtual void draw();
-    virtual BOOL canClose();
+    virtual bool canClose();
 
     void onClickBuy();
     void onClickCancel();
@@ -135,7 +135,7 @@ void LLFloaterBuyCurrencyUI::target(const std::string& name, S32 price)
 
 
 // virtual
-BOOL LLFloaterBuyCurrencyUI::postBuild()
+bool LLFloaterBuyCurrencyUI::postBuild()
 {
     mManager.prepare();
 
@@ -146,7 +146,7 @@ BOOL LLFloaterBuyCurrencyUI::postBuild()
 
     updateUI();
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterBuyCurrencyUI::draw()
@@ -169,7 +169,7 @@ void LLFloaterBuyCurrencyUI::draw()
     LLFloater::draw();
 }
 
-BOOL LLFloaterBuyCurrencyUI::canClose()
+bool LLFloaterBuyCurrencyUI::canClose()
 {
     return mManager.canCancel();
 }
@@ -180,11 +180,11 @@ void LLFloaterBuyCurrencyUI::updateUI()
     mManager.updateUI(!hasError && !mManager.buying());
 
     // hide most widgets - we'll turn them on as needed next
-    getChildView("info_buying")->setVisible(FALSE);
-    getChildView("info_need_more")->setVisible(FALSE);
-    getChildView("purchase_warning_repurchase")->setVisible(FALSE);
-    getChildView("purchase_warning_notenough")->setVisible(FALSE);
-    getChildView("contacting")->setVisible(FALSE);
+    getChildView("info_buying")->setVisible(false);
+    getChildView("info_need_more")->setVisible(false);
+    getChildView("purchase_warning_repurchase")->setVisible(false);
+    getChildView("purchase_warning_notenough")->setVisible(false);
+    getChildView("contacting")->setVisible(false);
 
     if (hasError)
     {
@@ -199,15 +199,15 @@ void LLFloaterBuyCurrencyUI::updateUI()
     else
     {
         // display the main Buy L$ interface
-        getChildView("normal_background")->setVisible(TRUE);
+        getChildView("normal_background")->setVisible(true);
 
         if (mHasTarget)
         {
-            getChildView("info_need_more")->setVisible(TRUE);
+            getChildView("info_need_more")->setVisible(true);
         }
         else
         {
-            getChildView("info_buying")->setVisible(TRUE);
+            getChildView("info_buying")->setVisible(true);
         }
 
         if (mManager.buying())
@@ -224,18 +224,18 @@ void LLFloaterBuyCurrencyUI::updateUI()
         }
 
         S32 balance = gStatusBar->getBalance();
-        getChildView("balance_label")->setVisible(TRUE);
-        getChildView("balance_amount")->setVisible(TRUE);
+        getChildView("balance_label")->setVisible(true);
+        getChildView("balance_amount")->setVisible(true);
         getChild<LLUICtrl>("balance_amount")->setTextArg("[AMT]", llformat("%d", balance));
 
         S32 buying = mManager.getAmount();
-        getChildView("buying_label")->setVisible(TRUE);
-        getChildView("buying_amount")->setVisible(TRUE);
+        getChildView("buying_label")->setVisible(true);
+        getChildView("buying_amount")->setVisible(true);
         getChild<LLUICtrl>("buying_amount")->setTextArg("[AMT]", llformat("%d", buying));
 
         S32 total = balance + buying;
-        getChildView("total_label")->setVisible(TRUE);
-        getChildView("total_amount")->setVisible(TRUE);
+        getChildView("total_label")->setVisible(true);
+        getChildView("total_amount")->setVisible(true);
         getChild<LLUICtrl>("total_amount")->setTextArg("[AMT]", llformat("%d", total));
 
         if (mHasTarget)
diff --git a/indra/newview/llfloaterbuycurrencyhtml.cpp b/indra/newview/llfloaterbuycurrencyhtml.cpp
index c138cd5f2e..d3712869b0 100644
--- a/indra/newview/llfloaterbuycurrencyhtml.cpp
+++ b/indra/newview/llfloaterbuycurrencyhtml.cpp
@@ -42,13 +42,13 @@ LLFloaterBuyCurrencyHTML::LLFloaterBuyCurrencyHTML( const LLSD& key ):
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLFloaterBuyCurrencyHTML::postBuild()
+bool LLFloaterBuyCurrencyHTML::postBuild()
 {
     // observer media events
     mBrowser = getChild<LLMediaCtrl>( "browser" );
     mBrowser->addObserver( this );
 
-    return TRUE;
+    return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/indra/newview/llfloaterbuycurrencyhtml.h b/indra/newview/llfloaterbuycurrencyhtml.h
index 23555b261f..23a29cae4c 100644
--- a/indra/newview/llfloaterbuycurrencyhtml.h
+++ b/indra/newview/llfloaterbuycurrencyhtml.h
@@ -37,7 +37,7 @@ class LLFloaterBuyCurrencyHTML :
     public:
         LLFloaterBuyCurrencyHTML( const LLSD& key );
 
-        /*virtual*/ BOOL postBuild();
+        /*virtual*/ bool postBuild();
         /*virtual*/ void onClose( bool app_quitting );
 
         // inherited from LLViewerMediaObserver
diff --git a/indra/newview/llfloaterbuyland.cpp b/indra/newview/llfloaterbuyland.cpp
index ac45e50c08..570a223908 100644
--- a/indra/newview/llfloaterbuyland.cpp
+++ b/indra/newview/llfloaterbuyland.cpp
@@ -187,7 +187,7 @@ public:
 
     void tellUserError(const std::string& message, const std::string& uri);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     void startBuyPreConfirm();
     void startBuyPostConfirm(const std::string& password);
@@ -197,7 +197,7 @@ public:
      void onClickErrorWeb();
 
     virtual void draw();
-    virtual BOOL canClose();
+    virtual bool canClose();
 
     void onVisibilityChanged ( const LLSD& new_visibility );
 
@@ -306,7 +306,7 @@ void LLFloaterBuyLandUI::onClose(bool app_quitting)
     // This object holds onto observer, transactions, and parcel state.
     // Despite being single_instance, destroy it to call destructors and clean
     // everything up.
-    setVisible(FALSE);
+    setVisible(false);
     destroy();
 }
 
@@ -569,7 +569,7 @@ void LLFloaterBuyLandUI::updateCovenantInfo()
     LLTextBox* box = getChild<LLTextBox>("covenant_text");
     if(box)
     {
-        box->setVisible(FALSE);
+        box->setVisible(false);
     }
 
     // send EstateCovenantInfo message
@@ -605,14 +605,14 @@ void LLFloaterBuyLandUI::updateFloaterCovenantText(const std::string &string, co
         refreshUI();
 
         // remove the line stating that you must agree
-        box->setVisible(FALSE);
+        box->setVisible(false);
     }
     else
     {
         check->setEnabled(true);
 
         // remove the line stating that you must agree
-        box->setVisible(TRUE);
+        box->setVisible(true);
     }
 }
 
@@ -733,7 +733,7 @@ void LLFloaterBuyLandUI::runWebSitePrep(const std::string& password)
         return;
     }
 
-    BOOL remove_contribution = getChild<LLUICtrl>("remove_contribution")->getValue().asBoolean();
+    bool remove_contribution = getChild<LLUICtrl>("remove_contribution")->getValue().asBoolean();
     mParcelBuyInfo = LLViewerParcelMgr::getInstance()->setupParcelBuy(gAgent.getID(), gAgent.getSessionID(),
                         gAgent.getGroupID(), mIsForGroup, mIsClaim, remove_contribution);
 
@@ -929,7 +929,7 @@ void LLFloaterBuyLandUI::tellUserError(
 
 
 // virtual
-BOOL LLFloaterBuyLandUI::postBuild()
+bool LLFloaterBuyLandUI::postBuild()
 {
     setVisibleCallback(boost::bind(&LLFloaterBuyLandUI::onVisibilityChanged, this, _2));
 
@@ -941,7 +941,7 @@ BOOL LLFloaterBuyLandUI::postBuild()
 
     center();
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterBuyLandUI::setParcel(LLViewerRegion* region, LLParcelSelectionHandle parcel)
@@ -994,7 +994,7 @@ void LLFloaterBuyLandUI::draw()
 }
 
 // virtual
-BOOL LLFloaterBuyLandUI::canClose()
+bool LLFloaterBuyLandUI::canClose()
 {
     // mTransactionType check for pre-buy estimation stage and mCurrency to allow exit after transaction
     bool can_close = !mTransaction && (mTransactionType != TransactionBuy || mCurrency.canCancel());
@@ -1097,9 +1097,9 @@ void LLFloaterBuyLandUI::refreshUI()
     }
     else
     {
-        getChildView("step_error")->setVisible(FALSE);
-        getChildView("error_message")->setVisible(FALSE);
-        getChildView("error_web")->setVisible(FALSE);
+        getChildView("step_error")->setVisible(false);
+        getChildView("error_message")->setVisible(false);
+        getChildView("error_web")->setVisible(false);
     }
 
 
@@ -1134,16 +1134,16 @@ void LLFloaterBuyLandUI::refreshUI()
             levels->setCurrentByIndex(mUserPlanChoice);
         }
 
-        getChildView("step_1")->setVisible(TRUE);
-        getChildView("account_action")->setVisible(TRUE);
-        getChildView("account_reason")->setVisible(TRUE);
+        getChildView("step_1")->setVisible(true);
+        getChildView("account_action")->setVisible(true);
+        getChildView("account_reason")->setVisible(true);
     }
     else
     {
-        getChildView("step_1")->setVisible(FALSE);
-        getChildView("account_action")->setVisible(FALSE);
-        getChildView("account_reason")->setVisible(FALSE);
-        getChildView("account_level")->setVisible(FALSE);
+        getChildView("step_1")->setVisible(false);
+        getChildView("account_action")->setVisible(false);
+        getChildView("account_reason")->setVisible(false);
+        getChildView("account_level")->setVisible(false);
     }
 
     // section two: land use fees
@@ -1201,15 +1201,15 @@ void LLFloaterBuyLandUI::refreshUI()
 
         getChild<LLUICtrl>("land_use_reason")->setValue(message);
 
-        getChildView("step_2")->setVisible(TRUE);
-        getChildView("land_use_action")->setVisible(TRUE);
-        getChildView("land_use_reason")->setVisible(TRUE);
+        getChildView("step_2")->setVisible(true);
+        getChildView("land_use_action")->setVisible(true);
+        getChildView("land_use_reason")->setVisible(true);
     }
     else
     {
-        getChildView("step_2")->setVisible(FALSE);
-        getChildView("land_use_action")->setVisible(FALSE);
-        getChildView("land_use_reason")->setVisible(FALSE);
+        getChildView("step_2")->setVisible(false);
+        getChildView("land_use_action")->setVisible(false);
+        getChildView("land_use_reason")->setVisible(false);
     }
 
     // section three: purchase & currency
@@ -1281,18 +1281,18 @@ void LLFloaterBuyLandUI::refreshUI()
                             llformat("%d", minContribution));
         getChildView("remove_contribution")->setVisible( showRemoveContribution);
 
-        getChildView("step_3")->setVisible(TRUE);
-        getChildView("purchase_action")->setVisible(TRUE);
-        getChildView("currency_reason")->setVisible(TRUE);
-        getChildView("currency_balance")->setVisible(TRUE);
+        getChildView("step_3")->setVisible(true);
+        getChildView("purchase_action")->setVisible(true);
+        getChildView("currency_reason")->setVisible(true);
+        getChildView("currency_balance")->setVisible(true);
     }
     else
     {
-        getChildView("step_3")->setVisible(FALSE);
-        getChildView("purchase_action")->setVisible(FALSE);
-        getChildView("currency_reason")->setVisible(FALSE);
-        getChildView("currency_balance")->setVisible(FALSE);
-        getChildView("remove_group_donation")->setVisible(FALSE);
+        getChildView("step_3")->setVisible(false);
+        getChildView("purchase_action")->setVisible(false);
+        getChildView("currency_reason")->setVisible(false);
+        getChildView("currency_balance")->setVisible(false);
+        getChildView("remove_group_donation")->setVisible(false);
     }
 
 
diff --git a/indra/newview/llfloaterbvhpreview.cpp b/indra/newview/llfloaterbvhpreview.cpp
index 1fb0a72d3e..5330518ba5 100644
--- a/indra/newview/llfloaterbvhpreview.cpp
+++ b/indra/newview/llfloaterbvhpreview.cpp
@@ -188,14 +188,14 @@ std::map <std::string, std::string> LLFloaterBvhPreview::getJointAliases()
 //-----------------------------------------------------------------------------
 // postBuild()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterBvhPreview::postBuild()
+bool LLFloaterBvhPreview::postBuild()
 {
     LLKeyframeMotion* motionp = NULL;
     LLBVHLoader* loaderp = NULL;
 
     if (!LLFloaterNameDesc::postBuild())
     {
-        return FALSE;
+        return false;
     }
 
     getChild<LLUICtrl>("name_form")->setCommitCallback(boost::bind(&LLFloaterBvhPreview::onCommitName, this));
@@ -220,7 +220,7 @@ BOOL LLFloaterBvhPreview::postBuild()
     mStopButton = getChild<LLButton>( "stop_btn");
     mStopButton->setClickedCallback(boost::bind(&LLFloaterBvhPreview::onBtnStop, this));
 
-    getChildView("bad_animation_text")->setVisible(FALSE);
+    getChildView("bad_animation_text")->setVisible(false);
 
     mAnimPreview = new LLPreviewAnimation(256, 256);
 
@@ -294,7 +294,7 @@ BOOL LLFloaterBvhPreview::postBuild()
         loaderp->serialize(dp);
         dp.reset();
         LL_INFOS("BVH") << "Deserializing motionp" << LL_ENDL;
-        BOOL success = motionp && motionp->deserialize(dp, mMotionID, false);
+        bool success = motionp && motionp->deserialize(dp, mMotionID, false);
         LL_INFOS("BVH") << "Done" << LL_ENDL;
 
         delete []buffer;
@@ -331,7 +331,7 @@ BOOL LLFloaterBvhPreview::postBuild()
             getChild<LLUICtrl>("hand_pose_combo")->setValue(LLHandMotion::getHandPoseName(motionp->getHandPose()));
             getChild<LLUICtrl>("ease_in_time")->setValue(LLSD(motionp->getEaseInDuration()));
             getChild<LLUICtrl>("ease_out_time")->setValue(LLSD(motionp->getEaseOutDuration()));
-            setEnabled(TRUE);
+            setEnabled(true);
             std::string seconds_string;
             seconds_string = llformat(" - %.2f seconds", motionp->getDuration());
 
@@ -363,7 +363,7 @@ BOOL LLFloaterBvhPreview::postBuild()
             }
         }
 
-        //setEnabled(FALSE);
+        //setEnabled(false);
         mMotionID.setNull();
         mAnimPreview = NULL;
     }
@@ -372,7 +372,7 @@ BOOL LLFloaterBvhPreview::postBuild()
 
     delete loaderp;
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -382,7 +382,7 @@ LLFloaterBvhPreview::~LLFloaterBvhPreview()
 {
     mAnimPreview = NULL;
 
-    setEnabled(FALSE);
+    setEnabled(false);
 }
 
 //-----------------------------------------------------------------------------
@@ -433,7 +433,7 @@ void LLFloaterBvhPreview::resetMotion()
         return;
 
     LLVOAvatar* avatarp = mAnimPreview->getDummyAvatar();
-    BOOL paused = avatarp->areAnimationsPaused();
+    bool paused = avatarp->areAnimationsPaused();
 
     LLKeyframeMotion* motionp = dynamic_cast<LLKeyframeMotion*>(avatarp->findMotion(mMotionID));
     if( motionp )
@@ -471,7 +471,7 @@ void LLFloaterBvhPreview::resetMotion()
 //-----------------------------------------------------------------------------
 // handleMouseDown()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterBvhPreview::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLFloaterBvhPreview::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (mPreviewRect.pointInRect(x, y))
     {
@@ -480,7 +480,7 @@ BOOL LLFloaterBvhPreview::handleMouseDown(S32 x, S32 y, MASK mask)
         gViewerWindow->hideCursor();
         mLastMouseX = x;
         mLastMouseY = y;
-        return TRUE;
+        return true;
     }
 
     return LLFloater::handleMouseDown(x, y, mask);
@@ -489,9 +489,9 @@ BOOL LLFloaterBvhPreview::handleMouseDown(S32 x, S32 y, MASK mask)
 //-----------------------------------------------------------------------------
 // handleMouseUp()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterBvhPreview::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLFloaterBvhPreview::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    gFocusMgr.setMouseCapture(FALSE);
+    gFocusMgr.setMouseCapture(nullptr);
     gViewerWindow->showCursor();
     return LLFloater::handleMouseUp(x, y, mask);
 }
@@ -499,7 +499,7 @@ BOOL LLFloaterBvhPreview::handleMouseUp(S32 x, S32 y, MASK mask)
 //-----------------------------------------------------------------------------
 // handleHover()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterBvhPreview::handleHover(S32 x, S32 y, MASK mask)
+bool LLFloaterBvhPreview::handleHover(S32 x, S32 y, MASK mask)
 {
     MASK local_mask = mask & ~MASK_ALT;
 
@@ -548,13 +548,13 @@ BOOL LLFloaterBvhPreview::handleHover(S32 x, S32 y, MASK mask)
         gViewerWindow->setCursor(UI_CURSOR_TOOLZOOMIN);
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // handleScrollWheel()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterBvhPreview::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLFloaterBvhPreview::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if (!mAnimPreview)
         return false;
@@ -562,7 +562,7 @@ BOOL LLFloaterBvhPreview::handleScrollWheel(S32 x, S32 y, S32 clicks)
     mAnimPreview->zoom((F32)clicks * -0.2f);
     mAnimPreview->requestUpdate();
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -672,13 +672,13 @@ void LLFloaterBvhPreview::onCommitBaseAnim()
     {
         LLVOAvatar* avatarp = mAnimPreview->getDummyAvatar();
 
-        BOOL paused = avatarp->areAnimationsPaused();
+        bool paused = avatarp->areAnimationsPaused();
 
         // stop all other possible base motions
-        avatarp->stopMotion(mIDList["Standing"], TRUE);
-        avatarp->stopMotion(mIDList["Walking"], TRUE);
-        avatarp->stopMotion(mIDList["Sitting"], TRUE);
-        avatarp->stopMotion(mIDList["Flying"], TRUE);
+        avatarp->stopMotion(mIDList["Standing"], true);
+        avatarp->stopMotion(mIDList["Walking"], true);
+        avatarp->stopMotion(mIDList["Sitting"], true);
+        avatarp->stopMotion(mIDList["Flying"], true);
 
         resetMotion();
 
@@ -723,7 +723,7 @@ void LLFloaterBvhPreview::onCommitLoopIn()
     {
         motionp->setLoopIn((F32)getChild<LLUICtrl>("loop_in_point")->getValue().asReal() / 100.f);
         resetMotion();
-        getChild<LLUICtrl>("loop_check")->setValue(LLSD(TRUE));
+        getChild<LLUICtrl>("loop_check")->setValue(LLSD(true));
         onCommitLoop();
     }
 }
@@ -743,7 +743,7 @@ void LLFloaterBvhPreview::onCommitLoopOut()
     {
         motionp->setLoopOut((F32)getChild<LLUICtrl>("loop_out_point")->getValue().asReal() * 0.01f * motionp->getDuration());
         resetMotion();
-        getChild<LLUICtrl>("loop_check")->setValue(LLSD(TRUE));
+        getChild<LLUICtrl>("loop_check")->setValue(LLSD(true));
         onCommitLoop();
     }
 }
@@ -939,22 +939,22 @@ void LLFloaterBvhPreview::refresh()
     bool show_play = true;
     if (!mAnimPreview)
     {
-        getChildView("bad_animation_text")->setVisible(TRUE);
+        getChildView("bad_animation_text")->setVisible(true);
         // play button visible but disabled
-        mPlayButton->setEnabled(FALSE);
-        mStopButton->setEnabled(FALSE);
-        getChildView("ok_btn")->setEnabled(FALSE);
+        mPlayButton->setEnabled(false);
+        mStopButton->setEnabled(false);
+        getChildView("ok_btn")->setEnabled(false);
     }
     else
     {
-        getChildView("bad_animation_text")->setVisible(FALSE);
+        getChildView("bad_animation_text")->setVisible(false);
         // re-enabled in case previous animation was bad
-        mPlayButton->setEnabled(TRUE);
-        mStopButton->setEnabled(TRUE);
+        mPlayButton->setEnabled(true);
+        mStopButton->setEnabled(true);
         LLVOAvatar* avatarp = mAnimPreview->getDummyAvatar();
         if (avatarp->isMotionActive(mMotionID))
         {
-            mStopButton->setEnabled(TRUE);
+            mStopButton->setEnabled(true);
             LLKeyframeMotion* motionp = (LLKeyframeMotion*)avatarp->findMotion(mMotionID);
             if (!avatarp->areAnimationsPaused())
             {
@@ -972,7 +972,7 @@ void LLFloaterBvhPreview::refresh()
             // Motion just finished playing
             mPauseRequest = avatarp->requestPause();
         }
-        getChildView("ok_btn")->setEnabled(TRUE);
+        getChildView("ok_btn")->setEnabled(true);
         mAnimPreview->requestUpdate();
     }
     mPlayButton->setVisible(show_play);
@@ -1036,9 +1036,9 @@ void LLFloaterBvhPreview::onBtnOK(void* userdata)
 //-----------------------------------------------------------------------------
 // LLPreviewAnimation
 //-----------------------------------------------------------------------------
-LLPreviewAnimation::LLPreviewAnimation(S32 width, S32 height) : LLViewerDynamicTexture(width, height, 3, ORDER_MIDDLE, FALSE)
+LLPreviewAnimation::LLPreviewAnimation(S32 width, S32 height) : LLViewerDynamicTexture(width, height, 3, ORDER_MIDDLE, false)
 {
-    mNeedsUpdate = TRUE;
+    mNeedsUpdate = true;
     mCameraDistance = PREVIEW_CAMERA_DISTANCE;
     mCameraYaw = 0.f;
     mCameraPitch = 0.f;
@@ -1055,10 +1055,10 @@ LLPreviewAnimation::LLPreviewAnimation(S32 width, S32 height) : LLViewerDynamicT
     mDummyAvatar->hideSkirt();
 
     // stop extraneous animations
-    mDummyAvatar->stopMotion( ANIM_AGENT_HEAD_ROT, TRUE );
-    mDummyAvatar->stopMotion( ANIM_AGENT_EYE, TRUE );
-    mDummyAvatar->stopMotion( ANIM_AGENT_BODY_NOISE, TRUE );
-    mDummyAvatar->stopMotion( ANIM_AGENT_BREATHE_ROT, TRUE );
+    mDummyAvatar->stopMotion( ANIM_AGENT_HEAD_ROT, true );
+    mDummyAvatar->stopMotion( ANIM_AGENT_EYE, true );
+    mDummyAvatar->stopMotion( ANIM_AGENT_BODY_NOISE, true );
+    mDummyAvatar->stopMotion( ANIM_AGENT_BREATHE_ROT, true );
 }
 
 //-----------------------------------------------------------------------------
@@ -1078,9 +1078,9 @@ S8 LLPreviewAnimation::getType() const
 //-----------------------------------------------------------------------------
 // update()
 //-----------------------------------------------------------------------------
-BOOL    LLPreviewAnimation::render()
+bool    LLPreviewAnimation::render()
 {
-    mNeedsUpdate = FALSE;
+    mNeedsUpdate = false;
     LLVOAvatar* avatarp = mDummyAvatar;
 
     gGL.matrixMode(LLRender::MM_PROJECTION);
@@ -1123,7 +1123,7 @@ BOOL    LLPreviewAnimation::render()
 
     camera->setViewNoBroadcast(LLViewerCamera::getInstance()->getDefaultFOV() / mCameraZoom);
     camera->setAspect((F32) mFullWidth / (F32) mFullHeight);
-    camera->setPerspective(FALSE, mOrigin.mX, mOrigin.mY, mFullWidth, mFullHeight, FALSE);
+    camera->setPerspective(false, mOrigin.mX, mOrigin.mY, mFullWidth, mFullHeight, false);
 
     //SJB: Animation is updated in LLVOAvatar::updateCharacter
 
@@ -1145,7 +1145,7 @@ BOOL    LLPreviewAnimation::render()
     }
 
     gGL.color4f(1,1,1,1);
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -1153,7 +1153,7 @@ BOOL    LLPreviewAnimation::render()
 //-----------------------------------------------------------------------------
 void LLPreviewAnimation::requestUpdate()
 {
-    mNeedsUpdate = TRUE;
+    mNeedsUpdate = true;
 }
 
 //-----------------------------------------------------------------------------
diff --git a/indra/newview/llfloaterbvhpreview.h b/indra/newview/llfloaterbvhpreview.h
index 9de74c39cd..ae64521492 100644
--- a/indra/newview/llfloaterbvhpreview.h
+++ b/indra/newview/llfloaterbvhpreview.h
@@ -47,18 +47,18 @@ public:
 
     /*virtual*/ S8 getType() const ;
 
-    BOOL    render();
+    bool    render();
     void    requestUpdate();
     void    rotate(F32 yaw_radians, F32 pitch_radians);
     void    zoom(F32 zoom_delta);
     void    setZoom(F32 zoom_amt);
     void    pan(F32 right, F32 up);
-    virtual BOOL needsUpdate() { return mNeedsUpdate; }
+    virtual bool needsUpdate() { return mNeedsUpdate; }
 
     LLVOAvatar* getDummyAvatar() { return mDummyAvatar; }
 
 protected:
-    BOOL                mNeedsUpdate;
+    bool                mNeedsUpdate;
     F32                 mCameraDistance;
     F32                 mCameraYaw;
     F32                 mCameraPitch;
@@ -73,12 +73,12 @@ public:
     LLFloaterBvhPreview(const std::string& filename);
     virtual ~LLFloaterBvhPreview();
 
-    BOOL postBuild();
+    bool postBuild();
 
-    BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    BOOL handleHover(S32 x, S32 y, MASK mask);
-    BOOL handleScrollWheel(S32 x, S32 y, S32 clicks);
+    bool handleMouseDown(S32 x, S32 y, MASK mask);
+    bool handleMouseUp(S32 x, S32 y, MASK mask);
+    bool handleHover(S32 x, S32 y, MASK mask);
+    bool handleScrollWheel(S32 x, S32 y, S32 clicks);
     void onMouseCaptureLost();
 
     void refresh();
diff --git a/indra/newview/llfloatercamera.cpp b/indra/newview/llfloatercamera.cpp
index b08af851c3..76ac730362 100644
--- a/indra/newview/llfloatercamera.cpp
+++ b/indra/newview/llfloatercamera.cpp
@@ -72,7 +72,7 @@ public:
 
     LLPanelCameraZoom() { onCreate(); }
 
-    /* virtual */ BOOL  postBuild();
+    /* virtual */ bool  postBuild();
     /* virtual */ void  draw();
 
 protected:
@@ -138,13 +138,13 @@ void set_view_visible(LLView* parent, const std::string& name, bool visible)
     parent->getChildView(name)->setVisible(visible);
 }
 
-BOOL LLPanelCameraItem::postBuild()
+bool LLPanelCameraItem::postBuild()
 {
     setMouseEnterCallback(boost::bind(set_view_visible, this, "hovered_icon", true));
     setMouseLeaveCallback(boost::bind(set_view_visible, this, "hovered_icon", false));
     setMouseDownCallback(boost::bind(&LLPanelCameraItem::onAnyMouseClick, this));
     setRightMouseDownCallback(boost::bind(&LLPanelCameraItem::onAnyMouseClick, this));
-    return TRUE;
+    return true;
 }
 
 void LLPanelCameraItem::onAnyMouseClick()
@@ -176,7 +176,7 @@ void LLPanelCameraZoom::onCreate()
     mCommitCallbackRegistrar.add("Camera.rotate", boost::bind(&LLPanelCameraZoom::onCameraRotate, this));
 }
 
-BOOL LLPanelCameraZoom::postBuild()
+bool LLPanelCameraZoom::postBuild()
 {
     mPlusBtn  = getChild<LLButton>("zoom_plus_btn");
     mMinusBtn = getChild<LLButton>("zoom_minus_btn");
@@ -426,7 +426,7 @@ void LLFloaterCamera::onOpen(const LLSD& key)
         updateState();
     else
         toPrevMode();
-    mClosed = FALSE;
+    mClosed = false;
 
     populatePresetCombo();
 
@@ -449,25 +449,25 @@ void LLFloaterCamera::onClose(bool app_quitting)
         mPrevMode = CAMERA_CTRL_MODE_PAN;
 
     switchMode(CAMERA_CTRL_MODE_PAN);
-    mClosed = TRUE;
+    mClosed = true;
 
-    gAgent.setMovementLocked(FALSE);
+    gAgent.setMovementLocked(false);
 }
 
 LLFloaterCamera::LLFloaterCamera(const LLSD& val)
 :   LLFloater(val),
-    mClosed(FALSE),
+    mClosed(false),
     mCurrMode(CAMERA_CTRL_MODE_PAN),
     mPrevMode(CAMERA_CTRL_MODE_PAN)
 {
     LLHints::getInstance()->registerHintTarget("view_popup", getHandle());
     mCommitCallbackRegistrar.add("CameraPresets.ChangeView", boost::bind(&LLFloaterCamera::onClickCameraItem, _2));
     mCommitCallbackRegistrar.add("CameraPresets.Save", boost::bind(&LLFloaterCamera::onSavePreset, this));
-    mCommitCallbackRegistrar.add("CameraPresets.ShowPresetsList", boost::bind(&LLFloaterReg::showInstance, "camera_presets", LLSD(), FALSE));
+    mCommitCallbackRegistrar.add("CameraPresets.ShowPresetsList", boost::bind(&LLFloaterReg::showInstance, "camera_presets", LLSD(), false));
 }
 
 // virtual
-BOOL LLFloaterCamera::postBuild()
+bool LLFloaterCamera::postBuild()
 {
     updateTransparency(TT_ACTIVE); // force using active floater transparency (STORM-730)
 
@@ -480,7 +480,7 @@ BOOL LLFloaterCamera::postBuild()
     mPresetCombo = getChild<LLComboBox>("preset_combo");
     mPreciseCtrls = getChild<LLButton>("precise_btn");
 
-    mPreciseCtrls->setClickedCallback(boost::bind(&LLFloaterReg::showInstance, "prefs_view_advanced", LLSD(), FALSE));
+    mPreciseCtrls->setClickedCallback(boost::bind(&LLFloaterReg::showInstance, "prefs_view_advanced", LLSD(), false));
 
     mPresetCombo->setCommitCallback(boost::bind(&LLFloaterCamera::onCustomPresetSelected, this));
     LLPresetsManager::getInstance()->setPresetListChangeCameraCallback(boost::bind(&LLFloaterCamera::populatePresetCombo, this));
@@ -588,7 +588,7 @@ void LLFloaterCamera::switchMode(ECameraControlMode mode)
 
     default:
         //normally we won't occur here
-        llassert_always(FALSE);
+        llassert_always(false);
     }
 }
 
diff --git a/indra/newview/llfloatercamera.h b/indra/newview/llfloatercamera.h
index 561e9a5bb3..7db903f470 100644
--- a/indra/newview/llfloatercamera.h
+++ b/indra/newview/llfloatercamera.h
@@ -92,7 +92,7 @@ private:
     /* return instance if it exists - created by LLFloaterReg */
     static LLFloaterCamera* findInstance();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     F32 getCurrentTransparency();
 
@@ -129,7 +129,7 @@ private:
     // remains true until preset camera mode is chosen, or pan button is clicked, or escape pressed
     static bool sFreeCamera;
     static bool sAppearanceEditing;
-    BOOL mClosed;
+    bool mClosed;
     ECameraControlMode mPrevMode;
     ECameraControlMode mCurrMode;
     std::map<ECameraControlMode, LLButton*> mMode2Button;
@@ -164,7 +164,7 @@ public:
         Optional<CommitCallbackParam> mousedown_callback;
         Params();
     };
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /** setting on/off background icon to indicate selected state */
     /*virtual*/ void setValue(const LLSD& value);
     // sends commit signal
diff --git a/indra/newview/llfloatercamerapresets.cpp b/indra/newview/llfloatercamerapresets.cpp
index eaf03dea81..b033af2564 100644
--- a/indra/newview/llfloatercamerapresets.cpp
+++ b/indra/newview/llfloatercamerapresets.cpp
@@ -38,14 +38,14 @@ LLFloaterCameraPresets::LLFloaterCameraPresets(const LLSD& key)
 LLFloaterCameraPresets::~LLFloaterCameraPresets()
 {}
 
-BOOL LLFloaterCameraPresets::postBuild()
+bool LLFloaterCameraPresets::postBuild()
 {
     mPresetList = getChild<LLFlatListView>("preset_list");
     mPresetList->setCommitCallback(boost::bind(&LLFloaterCameraPresets::onSelectionChange, this));
     mPresetList->setCommitOnSelectionChange(true);
     LLPresetsManager::getInstance()->setPresetListChangeCameraCallback(boost::bind(&LLFloaterCameraPresets::populateList, this));
 
-    return TRUE;
+    return true;
 }
 void LLFloaterCameraPresets::onOpen(const LLSD& key)
 {
@@ -99,7 +99,7 @@ LLCameraPresetFlatItem::~LLCameraPresetFlatItem()
 {
 }
 
-BOOL LLCameraPresetFlatItem::postBuild()
+bool LLCameraPresetFlatItem::postBuild()
 {
     mDeleteBtn = getChild<LLButton>("delete_btn");
     mDeleteBtn->setVisible(false);
diff --git a/indra/newview/llfloatercamerapresets.h b/indra/newview/llfloatercamerapresets.h
index 082cb4c4dd..4e12617242 100644
--- a/indra/newview/llfloatercamerapresets.h
+++ b/indra/newview/llfloatercamerapresets.h
@@ -34,7 +34,7 @@ class LLFloaterCameraPresets : public LLFloater
 {
     friend class LLFloaterReg;
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     virtual void onOpen(const LLSD& key);
 
     void populateList();
@@ -55,7 +55,7 @@ public:
 
     void setValue(const LLSD& value);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     virtual void onMouseEnter(S32 x, S32 y, MASK mask);
     virtual void onMouseLeave(S32 x, S32 y, MASK mask);
 
diff --git a/indra/newview/llfloaterchangeitemthumbnail.cpp b/indra/newview/llfloaterchangeitemthumbnail.cpp
index ec01571e32..3e2e7cb7a3 100644
--- a/indra/newview/llfloaterchangeitemthumbnail.cpp
+++ b/indra/newview/llfloaterchangeitemthumbnail.cpp
@@ -52,26 +52,32 @@
 class LLThumbnailImagePicker : public LLFilePickerThread
 {
 public:
-    LLThumbnailImagePicker(const LLUUID &item_id);
-    LLThumbnailImagePicker(const LLUUID &item_id, const LLUUID &task_id);
+    LLThumbnailImagePicker(const LLUUID &item_id, LLFloaterSimpleSnapshot::completion_t callback);
+    LLThumbnailImagePicker(const LLUUID &item_id, const LLUUID &task_id, LLFloaterSimpleSnapshot::completion_t callback);
     ~LLThumbnailImagePicker();
     void notify(const std::vector<std::string>& filenames) override;
 
 private:
     LLUUID mInventoryId;
     LLUUID mTaskId;
+    LLFloaterSimpleSnapshot::completion_t mCallback;
 };
 
-LLThumbnailImagePicker::LLThumbnailImagePicker(const LLUUID &item_id)
+LLThumbnailImagePicker::LLThumbnailImagePicker(const LLUUID &item_id,
+                                               LLFloaterSimpleSnapshot::completion_t callback)
     : LLFilePickerThread(LLFilePicker::FFLOAD_IMAGE)
     , mInventoryId(item_id)
+    , mCallback(callback)
 {
 }
 
-LLThumbnailImagePicker::LLThumbnailImagePicker(const LLUUID &item_id, const LLUUID &task_id)
+LLThumbnailImagePicker::LLThumbnailImagePicker(const LLUUID &item_id,
+                                               const LLUUID &task_id,
+                                               LLFloaterSimpleSnapshot::completion_t callback)
     : LLFilePickerThread(LLFilePicker::FFLOAD_IMAGE)
     , mInventoryId(item_id)
     , mTaskId(task_id)
+    , mCallback(callback)
 {
 }
 
@@ -91,12 +97,13 @@ void LLThumbnailImagePicker::notify(const std::vector<std::string>& filenames)
         return;
     }
 
-    LLFloaterSimpleSnapshot::uploadThumbnail(file_path, mInventoryId, mTaskId);
+    LLFloaterSimpleSnapshot::uploadThumbnail(file_path, mInventoryId, mTaskId, mCallback);
 }
 
 LLFloaterChangeItemThumbnail::LLFloaterChangeItemThumbnail(const LLSD& key)
     : LLFloater(key)
     , mObserverInitialized(false)
+    , mMultipleThumbnails(false)
     , mTooltipState(TOOLTIP_NONE)
 {
 }
@@ -107,15 +114,17 @@ LLFloaterChangeItemThumbnail::~LLFloaterChangeItemThumbnail()
     removeVOInventoryListener();
 }
 
-BOOL LLFloaterChangeItemThumbnail::postBuild()
+bool LLFloaterChangeItemThumbnail::postBuild()
 {
     mItemNameText = getChild<LLUICtrl>("item_name");
     mItemTypeIcon = getChild<LLIconCtrl>("item_type_icon");
     mThumbnailCtrl = getChild<LLThumbnailCtrl>("item_thumbnail");
     mToolTipTextBox = getChild<LLTextBox>("tooltip_text");
+    mMultipleTextBox = getChild<LLTextBox>("multiple_lbl");
 
     LLSD tooltip_text;
     mToolTipTextBox->setValue(tooltip_text);
+    mMultipleTextBox->setVisible(false);
 
     LLButton *upload_local = getChild<LLButton>("upload_local");
     upload_local->setClickedCallback(onUploadLocal, (void*)this);
@@ -152,21 +161,55 @@ BOOL LLFloaterChangeItemThumbnail::postBuild()
 
 void LLFloaterChangeItemThumbnail::onOpen(const LLSD& key)
 {
-    if (!key.has("item_id") && !key.isUUID())
+    if (!key.has("item_id") && !key.isUUID() && !key.isArray())
     {
         closeFloater();
     }
 
-    if (key.isUUID())
+    mItemList.clear();
+    mMultipleThumbnails = false;
+    if (key.isArray())
     {
-        mItemId = key.asUUID();
+        if (key.size() > 50)
+        {
+            // incident avoidance
+            LLNotificationsUtil::add("ThumbnailSelectionTooLarge");
+            closeFloater();
+        }
+
+        LLUUID image_id;
+        for (LLSD::array_const_iterator it = key.beginArray(); it != key.endArray(); ++it)
+        {
+            LLInventoryObject* obj = gInventory.getObject(it->asUUID());
+            if (obj)
+            {
+                if (mItemList.empty())
+                {
+                    image_id = obj->getThumbnailUUID();
+                }
+                mItemList.insert(it->asUUID());
+                if (image_id != obj->getThumbnailUUID())
+                {
+                    mMultipleThumbnails = true;
+                }
+            }
+        }
+    }
+    else if (key.isUUID())
+    {
+        mItemList.insert(key.asUUID());
     }
     else
     {
-        mItemId = key["item_id"].asUUID();
+        mItemList.insert(key["item_id"].asUUID());
         mTaskId = key["task_id"].asUUID();
     }
 
+    if (mItemList.size() == 0)
+    {
+        closeFloater();
+    }
+
     refreshFromInventory();
 }
 
@@ -180,11 +223,11 @@ void LLFloaterChangeItemThumbnail::onMouseEnter(S32 x, S32 y, MASK mask)
     mPasteFromClipboardBtn->setEnabled(LLClipboard::instance().hasContents());
 }
 
-BOOL LLFloaterChangeItemThumbnail::handleDragAndDrop(
+bool LLFloaterChangeItemThumbnail::handleDragAndDrop(
     S32 x,
     S32 y,
     MASK mask,
-    BOOL drop,
+    bool drop,
     EDragAndDropType cargo_type,
     void *cargo_data,
     EAcceptance *accept,
@@ -214,14 +257,14 @@ BOOL LLFloaterChangeItemThumbnail::handleDragAndDrop(
 
     LL_DEBUGS("UserInput") << "dragAndDrop handled by LLFloaterChangeItemThumbnail " << getKey() << LL_ENDL;
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterChangeItemThumbnail::changed(U32 mask)
 {
     //LLInventoryObserver
 
-    if (mTaskId.notNull() || mItemId.isNull())
+    if (mTaskId.notNull() || mItemList.size() == 0)
     {
         // Task inventory or not set up yet
         return;
@@ -229,13 +272,13 @@ void LLFloaterChangeItemThumbnail::changed(U32 mask)
 
     const std::set<LLUUID>& mChangedItemIDs = gInventory.getChangedIDs();
     std::set<LLUUID>::const_iterator it;
+    const LLUUID expected_id = *mItemList.begin();
 
     for (it = mChangedItemIDs.begin(); it != mChangedItemIDs.end(); it++)
     {
-        // set dirty for 'item profile panel' only if changed item is the item for which 'item profile panel' is shown (STORM-288)
-        if (*it == mItemId)
+        // check if there's a change we're interested in.
+        if (*it == expected_id)
         {
-            // if there's a change we're interested in.
             if ((mask & (LLInventoryObserver::LABEL | LLInventoryObserver::INTERNAL | LLInventoryObserver::REMOVE)) != 0)
             {
                 refreshFromInventory();
@@ -255,6 +298,12 @@ void LLFloaterChangeItemThumbnail::inventoryChanged(LLViewerObject* object,
 
 LLInventoryObject* LLFloaterChangeItemThumbnail::getInventoryObject()
 {
+    if (mItemList.size() == 0)
+    {
+        return NULL;
+    }
+
+    const LLUUID item_id = *mItemList.begin();
     LLInventoryObject* obj = NULL;
     if (mTaskId.isNull())
     {
@@ -265,7 +314,7 @@ LLInventoryObject* LLFloaterChangeItemThumbnail::getInventoryObject()
             mObserverInitialized = true;
         }
 
-        obj = gInventory.getObject(mItemId);
+        obj = gInventory.getObject(item_id);
     }
     else
     {
@@ -278,7 +327,7 @@ LLInventoryObject* LLFloaterChangeItemThumbnail::getInventoryObject()
                 mObserverInitialized = false;
             }
 
-            obj = object->getInventoryObject(mItemId);
+            obj = object->getInventoryObject(item_id);
         }
     }
     return obj;
@@ -337,7 +386,7 @@ void LLFloaterChangeItemThumbnail::refreshFromObject(LLInventoryObject* obj)
     {
         setTitle(getString("title_item_thumbnail"));
 
-        icon_img = LLInventoryIcon::getIcon(item->getType(), item->getInventoryType(), item->getFlags(), FALSE);
+        icon_img = LLInventoryIcon::getIcon(item->getType(), item->getInventoryType(), item->getFlags(), false);
         mRemoveImageBtn->setEnabled(thumbnail_id.notNull() && ((item->getActualType() != LLAssetType::AT_TEXTURE) || (item->getAssetUUID() != thumbnail_id)));
     }
     else
@@ -357,7 +406,7 @@ void LLFloaterChangeItemThumbnail::refreshFromObject(LLInventoryObject* obj)
                 LLInventoryModel::item_array_t items;
                 // Not LLIsOfAssetType, because we allow links
                 LLIsOutfitTextureType f;
-                gInventory.getDirectDescendentsOf(mItemId, cats, items, f);
+                gInventory.getDirectDescendentsOf(*mItemList.begin(), cats, items, f);
 
                 if (1 == items.size())
                 {
@@ -384,12 +433,44 @@ void LLFloaterChangeItemThumbnail::refreshFromObject(LLInventoryObject* obj)
             mRemoveImageBtn->setEnabled(thumbnail_id.notNull());
         }
     }
-    mItemTypeIcon->setImage(icon_img);
-    mItemNameText->setValue(obj->getName());
+    if (mItemList.size() == 1)
+    {
+        mItemTypeIcon->setImage(icon_img);
+        mItemTypeIcon->setVisible(true);
+        mMultipleTextBox->setVisible(false);
+        mItemNameText->setValue(obj->getName());
+        mItemNameText->setToolTip(std::string());
+    }
+    else
+    {
+        mItemTypeIcon->setVisible(false);
+        mMultipleTextBox->setVisible(mMultipleThumbnails);
+        mItemNameText->setValue(getString("multiple_item_names"));
+
+        // Display first five names as a tooltip
+        const S32 ITEMS_TO_SHOW = 5;
+        std::string items_str;
+        uuid_set_t::iterator iter = mItemList.begin();
+        uuid_set_t::iterator end = mItemList.end();
+        for (S32 i = 0; (iter != end) && (i < ITEMS_TO_SHOW); iter++, i++)
+        {
+            LLInventoryObject* pobj = gInventory.getObject(*iter);
+            if (pobj)
+            {
+                items_str += pobj->getName();
+                items_str += '\n';
+            }
+        }
+        if (mItemList.size() > ITEMS_TO_SHOW)
+        {
+            items_str += "...";
+        }
+        mItemNameText->setToolTip(items_str);
+    }
 
     mThumbnailCtrl->setValue(thumbnail_id);
 
-    mCopyToClipboardBtn->setEnabled(thumbnail_id.notNull());
+    mCopyToClipboardBtn->setEnabled(thumbnail_id.notNull() && !mMultipleThumbnails);
     mPasteFromClipboardBtn->setEnabled(LLClipboard::instance().hasContents());
 
     // todo: some elements might not support setting thumbnails
@@ -401,7 +482,17 @@ void LLFloaterChangeItemThumbnail::onUploadLocal(void *userdata)
 {
     LLFloaterChangeItemThumbnail *self = (LLFloaterChangeItemThumbnail*)userdata;
 
-    (new LLThumbnailImagePicker(self->mItemId, self->mTaskId))->getFile();
+    LLUUID task_id = self->mTaskId;
+    uuid_set_t inventory_ids = self->mItemList;
+    LLHandle<LLFloater> handle = self->getHandle();
+    (new LLThumbnailImagePicker(
+        *self->mItemList.begin(),
+        self->mTaskId,
+        [inventory_ids, task_id, handle](const LLUUID& asset_id)
+        {
+            onUploadComplete(asset_id, task_id, inventory_ids, handle);
+        }
+    ))->getFile();
 
     LLFloater* floaterp = self->mPickerHandle.get();
     if (floaterp)
@@ -428,7 +519,7 @@ void LLFloaterChangeItemThumbnail::onUploadSnapshot(void *userdata)
     else
     {
         LLSD key;
-        key["item_id"] = self->mItemId;
+        key["item_id"] = *self->mItemList.begin();
         key["task_id"] = self->mTaskId;
         LLFloaterSimpleSnapshot* snapshot_floater = (LLFloaterSimpleSnapshot*)LLFloaterReg::showInstance("simple_snapshot", key, true);
         if (snapshot_floater)
@@ -436,6 +527,14 @@ void LLFloaterChangeItemThumbnail::onUploadSnapshot(void *userdata)
             self->addDependentFloater(snapshot_floater);
             self->mSnapshotHandle = snapshot_floater->getHandle();
             snapshot_floater->setOwner(self);
+            LLUUID task_id = self->mTaskId;
+            uuid_set_t inventory_ids = self->mItemList;
+            LLHandle<LLFloater> handle = self->getHandle();
+            snapshot_floater->setComplectionCallback(
+                [inventory_ids, task_id, handle](const LLUUID& asset_id)
+                {
+                    onUploadComplete(asset_id, task_id, inventory_ids, handle);
+                });
         }
     }
 
@@ -532,7 +631,7 @@ void LLFloaterChangeItemThumbnail::onRemove(void *userdata)
     LLFloaterChangeItemThumbnail *self = (LLFloaterChangeItemThumbnail*)userdata;
 
     LLSD payload;
-    payload["item_id"] = self->mItemId;
+    payload["item_id"] = *self->mItemList.begin();
     payload["object_id"] = self->mTaskId;
     LLNotificationsUtil::add("DeleteThumbnail", LLSD(), payload, boost::bind(&LLFloaterChangeItemThumbnail::onRemovalConfirmation, _1, _2, self->getHandle()));
 }
@@ -551,7 +650,8 @@ void LLFloaterChangeItemThumbnail::onRemovalConfirmation(const LLSD& notificatio
 struct ImageLoadedData
 {
     LLUUID mThumbnailId;
-    LLUUID mObjectId;
+    LLUUID mTaskId;
+    uuid_set_t mItemIds;
     LLHandle<LLFloater> mFloaterHandle;
     bool mSilent;
     // Keep image reference to prevent deletion on timeout
@@ -581,7 +681,8 @@ void LLFloaterChangeItemThumbnail::assignAndValidateAsset(const LLUUID &asset_id
             mExpectingAssetId = asset_id;
         }
         ImageLoadedData *data = new ImageLoadedData();
-        data->mObjectId = mItemId;
+        data->mTaskId = mTaskId;
+        data->mItemIds = mItemList;
         data->mThumbnailId = asset_id;
         data->mFloaterHandle = getHandle();
         data->mSilent = silent;
@@ -589,11 +690,11 @@ void LLFloaterChangeItemThumbnail::assignAndValidateAsset(const LLUUID &asset_id
 
         texturep->setLoadedCallback(onImageDataLoaded,
             MAX_DISCARD_LEVEL, // Don't need full image, just size data
-            FALSE,
-            FALSE,
+            false,
+            false,
             (void*)data,
             NULL,
-            FALSE);
+            false);
     }
     else
     {
@@ -647,12 +748,12 @@ bool LLFloaterChangeItemThumbnail::validateAsset(const LLUUID &asset_id)
 
 //static
 void LLFloaterChangeItemThumbnail::onImageDataLoaded(
-    BOOL success,
+    bool success,
     LLViewerFetchedTexture *src_vi,
     LLImageRaw* src,
     LLImageRaw* aux_src,
     S32 discard_level,
-    BOOL final,
+    bool final,
     void* userdata)
 {
     if (!userdata) return;
@@ -663,10 +764,13 @@ void LLFloaterChangeItemThumbnail::onImageDataLoaded(
 
     if (success)
     {
-        // Update the item, set it even if floater is dead
+        // Update items, set thumnails even if floater is dead
         if (validateAsset(data->mThumbnailId))
         {
-            setThumbnailId(data->mThumbnailId, data->mObjectId);
+            for (const LLUUID& id : data->mItemIds)
+            {
+                setThumbnailId(data->mThumbnailId, data->mTaskId, id);
+            }
         }
         else if (!data->mSilent)
         {
@@ -690,12 +794,12 @@ void LLFloaterChangeItemThumbnail::onImageDataLoaded(
 
 //static
 void LLFloaterChangeItemThumbnail::onFullImageLoaded(
-    BOOL success,
+    bool success,
     LLViewerFetchedTexture* src_vi,
     LLImageRaw* src,
     LLImageRaw* aux_src,
     S32 discard_level,
-    BOOL final,
+    bool final,
     void* userdata)
 {
     if (!userdata) return;
@@ -716,11 +820,23 @@ void LLFloaterChangeItemThumbnail::onFullImageLoaded(
         }
         else if (src_vi->getFullWidth() > LLFloaterSimpleSnapshot::THUMBNAIL_SNAPSHOT_DIM_MAX)
         {
-            LLFloaterSimpleSnapshot::uploadThumbnail(src, data->mObjectId, LLUUID::null);
+            LLUUID task_id = data->mTaskId;
+            uuid_set_t inventory_ids = data->mItemIds;
+            LLHandle<LLFloater> handle = data->mFloaterHandle;
+            LLFloaterSimpleSnapshot::uploadThumbnail(src,
+                                                     *data->mItemIds.begin(),
+                                                     task_id,
+                                                     [inventory_ids, task_id, handle](const LLUUID& asset_id)
+                                                     {
+                                                         onUploadComplete(asset_id, task_id, inventory_ids, handle);
+                                                     });
         }
         else
         {
-            setThumbnailId(data->mThumbnailId, data->mObjectId);
+            for (const LLUUID& id : data->mItemIds)
+            {
+                setThumbnailId(data->mThumbnailId, data->mTaskId, id);
+            }
         }
     }
 
@@ -745,12 +861,12 @@ void LLFloaterChangeItemThumbnail::showTexturePicker(const LLUUID &thumbnail_id)
             thumbnail_id,
             thumbnail_id,
             thumbnail_id,
-            FALSE,
-            TRUE,
+            false,
+            true,
             "SELECT PHOTO",
             PERM_NONE,
             PERM_NONE,
-            FALSE,
+            false,
             NULL,
             PICK_TEXTURE);
 
@@ -770,8 +886,8 @@ void LLFloaterChangeItemThumbnail::showTexturePicker(const LLUUID &thumbnail_id)
             }
             );
 
-            texture_floaterp->setLocalTextureEnabled(FALSE);
-            texture_floaterp->setBakeTextureEnabled(FALSE);
+            texture_floaterp->setLocalTextureEnabled(false);
+            texture_floaterp->setBakeTextureEnabled(false);
             texture_floaterp->setCanApplyImmediately(false);
             texture_floaterp->setCanApply(false, true, false /*Hide 'preview disabled'*/);
             texture_floaterp->setMinDimentionsLimits(LLFloaterSimpleSnapshot::THUMBNAIL_SNAPSHOT_DIM_MIN);
@@ -781,7 +897,7 @@ void LLFloaterChangeItemThumbnail::showTexturePicker(const LLUUID &thumbnail_id)
 
         floaterp->openFloater();
     }
-    floaterp->setFocus(TRUE);
+    floaterp->setFocus(true);
 }
 
 void LLFloaterChangeItemThumbnail::onTexturePickerCommit()
@@ -838,19 +954,34 @@ void LLFloaterChangeItemThumbnail::onTexturePickerCommit()
                 && (texturep->getCachedRawImageLevel() == 0 || texturep->getRawImageLevel() == 0)
                 && (texturep->isCachedRawImageReady() || texturep->isRawImageValid()))
             {
+                LLUUID task_id = mTaskId;
+                uuid_set_t inventory_ids = mItemList;
+                LLHandle<LLFloater> handle = getHandle();
+                LLFloaterSimpleSnapshot::completion_t callback =
+                    [inventory_ids, task_id, handle](const LLUUID& asset_id)
+                    {
+                        onUploadComplete(asset_id, task_id, inventory_ids, handle);
+                    };
                 if (texturep->isRawImageValid())
                 {
-                    LLFloaterSimpleSnapshot::uploadThumbnail(texturep->getRawImage(), mItemId, mTaskId);
+                    LLFloaterSimpleSnapshot::uploadThumbnail(texturep->getRawImage(),
+                                                             *mItemList.begin(),
+                                                             mTaskId,
+                                                             callback);
                 }
                 else
                 {
-                    LLFloaterSimpleSnapshot::uploadThumbnail(texturep->getCachedRawImage(), mItemId, mTaskId);
+                    LLFloaterSimpleSnapshot::uploadThumbnail(texturep->getCachedRawImage(),
+                                                             *mItemList.begin(),
+                                                             mTaskId,
+                                                             callback);
                 }
             }
             else
             {
                 ImageLoadedData* data = new ImageLoadedData();
-                data->mObjectId = mItemId;
+                data->mTaskId = mTaskId;
+                data->mItemIds = mItemList;
                 data->mThumbnailId = asset_id;
                 data->mFloaterHandle = getHandle();
                 data->mSilent = false;
@@ -860,11 +991,11 @@ void LLFloaterChangeItemThumbnail::onTexturePickerCommit()
                 texturep->setMinDiscardLevel(0);
                 texturep->setLoadedCallback(onFullImageLoaded,
                                             0, // Need best quality
-                                            TRUE,
-                                            FALSE,
+                                            true,
+                                            false,
                                             (void*)data,
                                             NULL,
-                                            FALSE);
+                                            false);
                 texturep->forceToSaveRawImage(0);
             }
             return;
@@ -874,6 +1005,41 @@ void LLFloaterChangeItemThumbnail::onTexturePickerCommit()
     }
 }
 
+//static
+void LLFloaterChangeItemThumbnail::onUploadComplete(const LLUUID& asset_id,
+                                                    const LLUUID& task_id,
+                                                    const uuid_set_t& inventory_ids,
+                                                    LLHandle<LLFloater> handle)
+{
+    if (asset_id.isNull())
+    {
+        // failure
+        return;
+    }
+    uuid_set_t::iterator iter = inventory_ids.begin();
+    uuid_set_t::iterator end = inventory_ids.end();
+    if (iter == end)
+    {
+        LL_WARNS() << "Received empty item list!" << LL_ENDL;
+    }
+    else
+    {
+        iter++; // first element was set by upload
+        for (; iter != end; iter++)
+        {
+            setThumbnailId(asset_id, task_id, *iter);
+        }
+    }
+    if (!handle.isDead())
+    {
+        LLFloaterChangeItemThumbnail* floater = (LLFloaterChangeItemThumbnail*)handle.get();
+        if (floater)
+        {
+            floater->mMultipleThumbnails = false;
+            floater->mMultipleTextBox->setVisible(false);
+        }
+    }
+}
 
 void LLFloaterChangeItemThumbnail::setThumbnailId(const LLUUID &new_thumbnail_id)
 {
@@ -889,20 +1055,28 @@ void LLFloaterChangeItemThumbnail::setThumbnailId(const LLUUID &new_thumbnail_id
         return;
     }
 
-    setThumbnailId(new_thumbnail_id, mItemId, obj);
+    for (const LLUUID &id : mItemList)
+    {
+        setThumbnailId(new_thumbnail_id, id, obj);
+    }
 }
 
-void LLFloaterChangeItemThumbnail::setThumbnailId(const LLUUID& new_thumbnail_id, const LLUUID& object_id)
+void LLFloaterChangeItemThumbnail::setThumbnailId(const LLUUID& new_thumbnail_id, const LLUUID& task_id, const LLUUID& inv_obj_id)
 {
-    LLInventoryObject* obj = gInventory.getObject(object_id);
+    if (task_id.notNull())
+    {
+        LL_WARNS() << "Not supported" << LL_ENDL;
+        return;
+    }
+    LLInventoryObject* obj = gInventory.getObject(inv_obj_id);
     if (!obj)
     {
         return;
     }
 
-    setThumbnailId(new_thumbnail_id, object_id, obj);
+    setThumbnailId(new_thumbnail_id, inv_obj_id, obj);
 }
-void LLFloaterChangeItemThumbnail::setThumbnailId(const LLUUID& new_thumbnail_id, const LLUUID& object_id, LLInventoryObject* obj)
+void LLFloaterChangeItemThumbnail::setThumbnailId(const LLUUID& new_thumbnail_id, const LLUUID& inv_obj_id, LLInventoryObject* obj)
 {
     if (obj->getThumbnailUUID() != new_thumbnail_id)
     {
@@ -920,12 +1094,12 @@ void LLFloaterChangeItemThumbnail::setThumbnailId(const LLUUID& new_thumbnail_id
         LLViewerInventoryCategory* view_folder = dynamic_cast<LLViewerInventoryCategory*>(obj);
         if (view_folder)
         {
-            update_inventory_category(object_id, updates, NULL);
+            update_inventory_category(inv_obj_id, updates, NULL);
         }
         LLViewerInventoryItem* view_item = dynamic_cast<LLViewerInventoryItem*>(obj);
         if (view_item)
         {
-            update_inventory_item(object_id, updates, NULL);
+            update_inventory_item(inv_obj_id, updates, NULL);
         }
     }
 }
diff --git a/indra/newview/llfloaterchangeitemthumbnail.h b/indra/newview/llfloaterchangeitemthumbnail.h
index bad5342e73..46f63801fe 100644
--- a/indra/newview/llfloaterchangeitemthumbnail.h
+++ b/indra/newview/llfloaterchangeitemthumbnail.h
@@ -45,16 +45,16 @@ public:
     LLFloaterChangeItemThumbnail(const LLSD& key);
     ~LLFloaterChangeItemThumbnail();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
     void onOpen(const LLSD& key) override;
     void onFocusReceived() override;
     void onMouseEnter(S32 x, S32 y, MASK mask) override;
 
-    BOOL handleDragAndDrop(
+    bool handleDragAndDrop(
         S32 x,
         S32 y,
         MASK mask,
-        BOOL drop,
+        bool drop,
         EDragAndDropType cargo_type,
         void *cargo_data,
         EAcceptance *accept,
@@ -83,27 +83,28 @@ private:
     static void onRemovalConfirmation(const LLSD& notification, const LLSD& response, LLHandle<LLFloater> handle);
 
     void assignAndValidateAsset(const LLUUID &asset_id, bool silent = false);
-    static void onImageDataLoaded(BOOL success,
+    static void onImageDataLoaded(bool success,
         LLViewerFetchedTexture *src_vi,
         LLImageRaw* src,
         LLImageRaw* aux_src,
         S32 discard_level,
-        BOOL final,
+        bool final,
         void* userdata);
-    static void onFullImageLoaded(BOOL success,
+    static void onFullImageLoaded(bool success,
                                   LLViewerFetchedTexture* src_vi,
                                   LLImageRaw* src,
                                   LLImageRaw* aux_src,
                                   S32 discard_level,
-                                  BOOL final,
+                                  bool final,
                                   void* userdata);
 
     void showTexturePicker(const LLUUID &thumbnail_id);
     void onTexturePickerCommit();
+    static void onUploadComplete(const LLUUID& asset_id, const LLUUID& task_id, const uuid_set_t& inventory_ids, LLHandle<LLFloater> handle);
 
     void setThumbnailId(const LLUUID &new_thumbnail_id);
-    static void setThumbnailId(const LLUUID& new_thumbnail_id, const LLUUID& object_id);
-    static void setThumbnailId(const LLUUID& new_thumbnail_id, const LLUUID& object_id, LLInventoryObject* obj);
+    static void setThumbnailId(const LLUUID& new_thumbnail_id, const LLUUID& task_id, const LLUUID& inv_obj_id);
+    static void setThumbnailId(const LLUUID& new_thumbnail_id, const LLUUID& inv_obj_id, LLInventoryObject* obj);
 
     enum EToolTipState
     {
@@ -120,8 +121,9 @@ private:
     void onButtonMouseLeave(LLUICtrl* button, const LLSD& param, EToolTipState state);
 
     bool mObserverInitialized;
+    bool mMultipleThumbnails; // for multiselection
     EToolTipState mTooltipState;
-    LLUUID mItemId;
+    uuid_set_t mItemList;
     LLUUID mTaskId;
     LLUUID mExpectingAssetId;
 
@@ -129,6 +131,7 @@ private:
     LLUICtrl *mItemNameText;
     LLThumbnailCtrl *mThumbnailCtrl;
     LLTextBox *mToolTipTextBox;
+    LLTextBox *mMultipleTextBox;
     LLButton *mCopyToClipboardBtn;
     LLButton *mPasteFromClipboardBtn;
     LLButton *mRemoveImageBtn;
diff --git a/indra/newview/llfloaterclassified.cpp b/indra/newview/llfloaterclassified.cpp
index 3520b0f67a..9001f2198e 100644
--- a/indra/newview/llfloaterclassified.cpp
+++ b/indra/newview/llfloaterclassified.cpp
@@ -51,9 +51,9 @@ void LLFloaterClassified::onOpen(const LLSD& key)
     LLFloater::onOpen(key);
 }
 
-BOOL LLFloaterClassified::postBuild()
+bool LLFloaterClassified::postBuild()
 {
-    return TRUE;
+    return true;
 }
 
 
diff --git a/indra/newview/llfloaterclassified.h b/indra/newview/llfloaterclassified.h
index 2c95d82b2c..45bd56695d 100644
--- a/indra/newview/llfloaterclassified.h
+++ b/indra/newview/llfloaterclassified.h
@@ -37,7 +37,7 @@ public:
     virtual ~LLFloaterClassified();
 
     void onOpen(const LLSD& key) override;
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     bool matchesKey(const LLSD& key) override;
 };
diff --git a/indra/newview/llfloatercolorpicker.cpp b/indra/newview/llfloatercolorpicker.cpp
index 8ad13367c0..603f54fb49 100644
--- a/indra/newview/llfloatercolorpicker.cpp
+++ b/indra/newview/llfloatercolorpicker.cpp
@@ -68,12 +68,12 @@
 //
 //////////////////////////////////////////////////////////////////////////////
 
-LLFloaterColorPicker::LLFloaterColorPicker (LLColorSwatchCtrl* swatch, BOOL show_apply_immediate )
+LLFloaterColorPicker::LLFloaterColorPicker (LLColorSwatchCtrl* swatch, bool show_apply_immediate )
     : LLFloater(LLSD()),
       mComponents           ( 3 ),
-      mMouseDownInLumRegion ( FALSE ),
-      mMouseDownInHueRegion ( FALSE ),
-      mMouseDownInSwatch    ( FALSE ),
+      mMouseDownInLumRegion ( false ),
+      mMouseDownInHueRegion ( false ),
+      mMouseDownInSwatch    ( false ),
       // *TODO: Specify this in XML
       mRGBViewerImageLeft   ( 140 ),
       mRGBViewerImageTop    ( 356 ),
@@ -99,7 +99,7 @@ LLFloaterColorPicker::LLFloaterColorPicker (LLColorSwatchCtrl* swatch, BOOL show
       mPaletteRegionWidth   ( mLumRegionLeft + mLumRegionWidth - 10 ),
       mPaletteRegionHeight  ( 40 ),
       mSwatch               ( swatch ),
-      mActive               ( TRUE ),
+      mActive               ( true ),
       mCanApplyImmediately  ( show_apply_immediate ),
       mContextConeOpacity   ( 0.f ),
       mContextConeInAlpha   (CONTEXT_CONE_IN_ALPHA),
@@ -113,8 +113,8 @@ LLFloaterColorPicker::LLFloaterColorPicker (LLColorSwatchCtrl* swatch, BOOL show
 
     if (!mCanApplyImmediately)
     {
-        mApplyImmediateCheck->setEnabled(FALSE);
-        mApplyImmediateCheck->set(FALSE);
+        mApplyImmediateCheck->setEnabled(false);
+        mApplyImmediateCheck->set(false);
     }
 }
 
@@ -131,6 +131,8 @@ void LLFloaterColorPicker::createUI ()
     // create RGB type area (not really RGB but it's got R,G & B in it.,..
 
     LLPointer<LLImageRaw> raw = new LLImageRaw ( mRGBViewerImageWidth, mRGBViewerImageHeight, mComponents );
+    LLImageDataLock lock(raw);
+
     U8* bits = raw->getData();
     S32 linesize = mRGBViewerImageWidth * mComponents;
     for ( S32 y = 0; y < mRGBViewerImageHeight; ++y )
@@ -151,7 +153,7 @@ void LLFloaterColorPicker::createUI ()
             * ( bits + x + y * linesize + 2 ) = ( U8 )( bVal * 255.0f );
         }
     }
-    mRGBImage = LLViewerTextureManager::getLocalTexture( (LLImageRaw*)raw, FALSE );
+    mRGBImage = LLViewerTextureManager::getLocalTexture( (LLImageRaw*)raw, false );
     gGL.getTexUnit(0)->bind(mRGBImage);
     mRGBImage->setAddressMode(LLTexUnit::TAM_CLAMP);
 
@@ -167,15 +169,15 @@ void LLFloaterColorPicker::createUI ()
 void LLFloaterColorPicker::showUI ()
 {
     openFloater(getKey());
-    setVisible ( TRUE );
-    setFocus ( TRUE );
+    setVisible ( true );
+    setFocus ( true );
 
     // HACK: if system color picker is required - close the SL one we made and use default system dialog
     if ( gSavedSettings.getBOOL ( "UseDefaultColorPicker" ) )
     {
         LLColorSwatchCtrl* swatch = getSwatch ();
 
-        setVisible ( FALSE );
+        setVisible ( false );
 
         // code that will get switched in for default system color picker
         if ( swatch )
@@ -205,14 +207,14 @@ void LLFloaterColorPicker::showUI ()
 
 //////////////////////////////////////////////////////////////////////////////
 // called after the dialog is rendered
-BOOL LLFloaterColorPicker::postBuild()
+bool LLFloaterColorPicker::postBuild()
 {
     mCancelBtn = getChild<LLButton>( "cancel_btn" );
     mCancelBtn->setClickedCallback ( onClickCancel, this );
 
     mSelectBtn = getChild<LLButton>( "select_btn");
     mSelectBtn->setClickedCallback ( onClickSelect, this );
-    mSelectBtn->setFocus ( TRUE );
+    mSelectBtn->setFocus ( true );
 
     mPipetteBtn = getChild<LLButton>("color_pipette" );
 
@@ -233,7 +235,7 @@ BOOL LLFloaterColorPicker::postBuild()
 
     LLToolPipette::getInstance()->setToolSelectCallback(boost::bind(&LLFloaterColorPicker::onColorSelect, this, _1));
 
-    return TRUE;
+    return true;
 }
 
 //////////////////////////////////////////////////////////////////////////////
@@ -419,7 +421,7 @@ void LLFloaterColorPicker::onClickSelect ( void* data )
 
 void LLFloaterColorPicker::onClickPipette( )
 {
-    BOOL pipette_active = mPipetteBtn->getToggleState();
+    bool pipette_active = mPipetteBtn->getToggleState();
     pipette_active = !pipette_active;
     if (pipette_active)
     {
@@ -466,8 +468,8 @@ void LLFloaterColorPicker::onColorSelect( const LLTextureEntry& te )
 
 void LLFloaterColorPicker::onMouseCaptureLost()
 {
-    setMouseDownInHueRegion(FALSE);
-    setMouseDownInLumRegion(FALSE);
+    setMouseDownInHueRegion(false);
+    setMouseDownInLumRegion(false);
 }
 
 F32 LLFloaterColorPicker::getSwatchTransparency()
@@ -476,7 +478,7 @@ F32 LLFloaterColorPicker::getSwatchTransparency()
     return getTransparencyType() == TT_ACTIVE ? 1.f : LLFloater::getCurrentTransparency();
 }
 
-BOOL LLFloaterColorPicker::isColorChanged()
+bool LLFloaterColorPicker::isColorChanged()
 {
     return ((getOrigR() != getCurR()) || (getOrigG() != getCurG()) || (getOrigB() != getCurB()));
 }
@@ -521,7 +523,7 @@ void LLFloaterColorPicker::draw()
                  mRGBViewerImageLeft + mRGBViewerImageWidth + 1,
                  mRGBViewerImageTop,
                  LLColor4 ( 0.0f, 0.0f, 0.0f, alpha ),
-                 FALSE );
+                 false );
 
     // draw luminance slider
     for ( S32 y = 0; y < mLumRegionHeight; ++y )
@@ -543,7 +545,7 @@ void LLFloaterColorPicker::draw()
     gl_triangle_2d ( startX, startY,
             startX + mLumMarkerSize, startY - mLumMarkerSize,
                 startX + mLumMarkerSize, startY + mLumMarkerSize,
-                    LLColor4 ( 0.75f, 0.75f, 0.75f, 1.0f ), TRUE );
+                    LLColor4 ( 0.75f, 0.75f, 0.75f, 1.0f ), true );
 
     // draw luminance slider outline
     gl_rect_2d ( mLumRegionLeft,
@@ -551,7 +553,7 @@ void LLFloaterColorPicker::draw()
                  mLumRegionLeft + mLumRegionWidth + 1,
                  mLumRegionTop,
                  LLColor4 ( 0.0f, 0.0f, 0.0f, 1.0f ),
-                 FALSE );
+                 false );
 
     // draw selected color swatch
     gl_rect_2d ( mSwatchRegionLeft,
@@ -559,7 +561,7 @@ void LLFloaterColorPicker::draw()
                  mSwatchRegionLeft + mSwatchRegionWidth,
                  mSwatchRegionTop,
                  LLColor4 ( getCurR (), getCurG (), getCurB (), alpha ),
-                 TRUE );
+                 true );
 
     // draw selected color swatch outline
     gl_rect_2d ( mSwatchRegionLeft,
@@ -567,7 +569,7 @@ void LLFloaterColorPicker::draw()
                  mSwatchRegionLeft + mSwatchRegionWidth + 1,
                  mSwatchRegionTop,
                  LLColor4 ( 0.0f, 0.0f, 0.0f, 1.0f ),
-                 FALSE );
+                 false );
 
     // color palette code is a little more involved so break it out into its' own method
     drawPalette ();
@@ -635,8 +637,8 @@ void LLFloaterColorPicker::drawPalette ()
             // draw palette entry color
             if ( mPalette [ curEntry ] )
             {
-                gl_rect_2d ( x1 + 2, y1 - 2, x2 - 2, y2 + 2, *mPalette [ curEntry++ ] % alpha, TRUE );
-                gl_rect_2d ( x1 + 1, y1 - 1, x2 - 1, y2 + 1, LLColor4 ( 0.0f, 0.0f, 0.0f, 1.0f ), FALSE );
+                gl_rect_2d ( x1 + 2, y1 - 2, x2 - 2, y2 + 2, *mPalette [ curEntry++ ] % alpha, true );
+                gl_rect_2d ( x1 + 1, y1 - 1, x2 - 1, y2 + 1, LLColor4 ( 0.0f, 0.0f, 0.0f, 1.0f ), false );
             }
         }
     }
@@ -740,7 +742,7 @@ void LLFloaterColorPicker::onTextEntryChanged ( LLUICtrl* ctrl )
 
 //////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLFloaterColorPicker::updateRgbHslFromPoint ( S32 xPosIn, S32 yPosIn )
+bool LLFloaterColorPicker::updateRgbHslFromPoint ( S32 xPosIn, S32 yPosIn )
 {
     if ( xPosIn >= mRGBViewerImageLeft &&
          xPosIn <= mRGBViewerImageLeft + mRGBViewerImageWidth &&
@@ -753,7 +755,7 @@ BOOL LLFloaterColorPicker::updateRgbHslFromPoint ( S32 xPosIn, S32 yPosIn )
                     getCurL () );
 
         // indicate a value changed
-        return TRUE;
+        return true;
     }
     else
     if ( xPosIn >= mLumRegionLeft &&
@@ -768,15 +770,15 @@ BOOL LLFloaterColorPicker::updateRgbHslFromPoint ( S32 xPosIn, S32 yPosIn )
                     ( ( F32 )yPosIn - ( ( F32 )mRGBViewerImageTop - ( F32 )mRGBViewerImageHeight ) ) / ( F32 )mRGBViewerImageHeight );
 
         // indicate a value changed
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 //////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLFloaterColorPicker::handleMouseDown ( S32 x, S32 y, MASK mask )
+bool LLFloaterColorPicker::handleMouseDown ( S32 x, S32 y, MASK mask )
 {
     // make it the frontmost
     gFloaterView->bringToFront(this);
@@ -791,13 +793,13 @@ BOOL LLFloaterColorPicker::handleMouseDown ( S32 x, S32 y, MASK mask )
     {
         gFocusMgr.setMouseCapture(this);
         // mouse button down
-        setMouseDownInHueRegion ( TRUE );
+        setMouseDownInHueRegion ( true );
 
         // update all values based on initial click
         updateRgbHslFromPoint ( x, y );
 
         // required by base class
-        return TRUE;
+        return true;
     }
 
     // rect containing RGB area
@@ -810,10 +812,10 @@ BOOL LLFloaterColorPicker::handleMouseDown ( S32 x, S32 y, MASK mask )
     {
         gFocusMgr.setMouseCapture(this);
         // mouse button down
-        setMouseDownInLumRegion ( TRUE );
+        setMouseDownInLumRegion ( true );
 
         // required by base class
-        return TRUE;
+        return true;
     }
 
     // rect containing swatch area
@@ -822,13 +824,13 @@ BOOL LLFloaterColorPicker::handleMouseDown ( S32 x, S32 y, MASK mask )
                         mSwatchRegionLeft + mSwatchRegionWidth,
                         mSwatchRegionTop - mSwatchRegionHeight );
 
-    setMouseDownInSwatch( FALSE );
+    setMouseDownInSwatch( false );
     if ( swatchRect.pointInRect ( x, y ) )
     {
-        setMouseDownInSwatch( TRUE );
+        setMouseDownInSwatch( true );
 
         // required - dont drag windows here.
-        return TRUE;
+        return true;
     }
 
     // rect containing palette area
@@ -842,7 +844,7 @@ BOOL LLFloaterColorPicker::handleMouseDown ( S32 x, S32 y, MASK mask )
         // release keyboard focus so we can change text values
         if (gFocusMgr.childHasKeyboardFocus(this))
         {
-            mSelectBtn->setFocus(TRUE);
+            mSelectBtn->setFocus(true);
         }
 
         // calculate which palette index we selected
@@ -865,7 +867,7 @@ BOOL LLFloaterColorPicker::handleMouseDown ( S32 x, S32 y, MASK mask )
             updateTextEntry ();
         }
 
-        return TRUE;
+        return true;
     }
 
     // dispatch to base class for the rest of things
@@ -875,7 +877,7 @@ BOOL LLFloaterColorPicker::handleMouseDown ( S32 x, S32 y, MASK mask )
 
 //////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLFloaterColorPicker::handleHover ( S32 x, S32 y, MASK mask )
+bool LLFloaterColorPicker::handleHover ( S32 x, S32 y, MASK mask )
 {
     // if we're the front most window
     if ( isFrontmost () )
@@ -895,7 +897,7 @@ BOOL LLFloaterColorPicker::handleHover ( S32 x, S32 y, MASK mask )
                 clamped_y = llclamp(y, mLumRegionTop - mLumRegionHeight, mLumRegionTop);
             }
 
-            // update the stored RGB/HSL values using the mouse position - returns TRUE if RGB was updated
+            // update the stored RGB/HSL values using the mouse position - returns true if RGB was updated
             if ( updateRgbHslFromPoint ( clamped_x, clamped_y ) )
             {
                 // update text entry fields
@@ -933,7 +935,7 @@ BOOL LLFloaterColorPicker::handleHover ( S32 x, S32 y, MASK mask )
                 highlightEntry = xOffset + yOffset * numPaletteColumns;
             }
 
-            return TRUE;
+            return true;
         }
     }
 
@@ -943,7 +945,7 @@ BOOL LLFloaterColorPicker::handleHover ( S32 x, S32 y, MASK mask )
 
 //////////////////////////////////////////////////////////////////////////////
 // reverts state once mouse button is released
-BOOL LLFloaterColorPicker::handleMouseUp ( S32 x, S32 y, MASK mask )
+bool LLFloaterColorPicker::handleMouseUp ( S32 x, S32 y, MASK mask )
 {
     getWindow()->setCursor ( UI_CURSOR_ARROW );
 
@@ -1001,8 +1003,8 @@ BOOL LLFloaterColorPicker::handleMouseUp ( S32 x, S32 y, MASK mask )
     }
 
     // mouse button not down anymore
-    setMouseDownInHueRegion ( FALSE );
-    setMouseDownInLumRegion ( FALSE );
+    setMouseDownInHueRegion ( false );
+    setMouseDownInLumRegion ( false );
 
     // mouse button not down in color swatch anymore
     mMouseDownInSwatch = false;
@@ -1027,10 +1029,10 @@ void LLFloaterColorPicker::cancelSelection ()
     LLColorSwatchCtrl::onColorChanged( getSwatch(), LLColorSwatchCtrl::COLOR_CANCEL );
 
     // hide picker dialog
-    this->setVisible ( FALSE );
+    this->setVisible ( false );
 }
 
-void LLFloaterColorPicker::setMouseDownInHueRegion ( BOOL mouse_down_in_region )
+void LLFloaterColorPicker::setMouseDownInHueRegion ( bool mouse_down_in_region )
 {
     mMouseDownInHueRegion = mouse_down_in_region;
     if (mouse_down_in_region)
@@ -1038,12 +1040,12 @@ void LLFloaterColorPicker::setMouseDownInHueRegion ( BOOL mouse_down_in_region )
         if (gFocusMgr.childHasKeyboardFocus(this))
         {
             // get focus out of spinners so that they can update freely
-            mSelectBtn->setFocus(TRUE);
+            mSelectBtn->setFocus(true);
         }
     }
 }
 
-void LLFloaterColorPicker::setMouseDownInLumRegion ( BOOL mouse_down_in_region )
+void LLFloaterColorPicker::setMouseDownInLumRegion ( bool mouse_down_in_region )
 {
     mMouseDownInLumRegion = mouse_down_in_region;
     if (mouse_down_in_region)
@@ -1051,12 +1053,12 @@ void LLFloaterColorPicker::setMouseDownInLumRegion ( BOOL mouse_down_in_region )
         if (gFocusMgr.childHasKeyboardFocus(this))
         {
             // get focus out of spinners so that they can update freely
-            mSelectBtn->setFocus(TRUE);
+            mSelectBtn->setFocus(true);
         }
     }
 }
 
-void LLFloaterColorPicker::setMouseDownInSwatch (BOOL mouse_down_in_swatch)
+void LLFloaterColorPicker::setMouseDownInSwatch (bool mouse_down_in_swatch)
 {
     mMouseDownInSwatch = mouse_down_in_swatch;
     if (mouse_down_in_swatch)
@@ -1064,12 +1066,12 @@ void LLFloaterColorPicker::setMouseDownInSwatch (BOOL mouse_down_in_swatch)
         if (gFocusMgr.childHasKeyboardFocus(this))
         {
             // get focus out of spinners so that they can update freely
-            mSelectBtn->setFocus(TRUE);
+            mSelectBtn->setFocus(true);
         }
     }
 }
 
-void LLFloaterColorPicker::setActive(BOOL active)
+void LLFloaterColorPicker::setActive(bool active)
 {
     // shut down pipette tool if active
     if (!active && mPipetteBtn->getToggleState())
diff --git a/indra/newview/llfloatercolorpicker.h b/indra/newview/llfloatercolorpicker.h
index ab7c6e3a43..5c27fffd08 100644
--- a/indra/newview/llfloatercolorpicker.h
+++ b/indra/newview/llfloatercolorpicker.h
@@ -44,15 +44,15 @@ class LLFloaterColorPicker
     : public LLFloater
 {
     public:
-        LLFloaterColorPicker (LLColorSwatchCtrl* swatch, BOOL show_apply_immediate = FALSE);
+        LLFloaterColorPicker (LLColorSwatchCtrl* swatch, bool show_apply_immediate = false);
         virtual ~LLFloaterColorPicker ();
 
         // overrides
-        virtual BOOL postBuild ();
+        virtual bool postBuild ();
         virtual void draw ();
-        virtual BOOL handleMouseDown ( S32 x, S32 y, MASK mask );
-        virtual BOOL handleMouseUp ( S32 x, S32 y, MASK mask );
-        virtual BOOL handleHover ( S32 x, S32 y, MASK mask );
+        virtual bool handleMouseDown ( S32 x, S32 y, MASK mask );
+        virtual bool handleMouseUp ( S32 x, S32 y, MASK mask );
+        virtual bool handleHover ( S32 x, S32 y, MASK mask );
         virtual void onMouseCaptureLost();
         virtual F32  getSwatchTransparency();
 
@@ -87,7 +87,7 @@ class LLFloaterColorPicker
         F32  getCurL () { return curL; };
 
         // updates current RGB/HSL values based on point in picker
-        BOOL updateRgbHslFromPoint ( S32 xPosIn, S32 yPosIn );
+        bool updateRgbHslFromPoint ( S32 xPosIn, S32 yPosIn );
 
         // updates text entry fields with current RGB/HSL
         void updateTextEntry ();
@@ -95,16 +95,16 @@ class LLFloaterColorPicker
         void stopUsingPipette();
 
         // mutator / accessor for mouse button pressed in region
-        void setMouseDownInHueRegion ( BOOL mouse_down_in_region );
-        BOOL getMouseDownInHueRegion () { return mMouseDownInHueRegion; };
+        void setMouseDownInHueRegion ( bool mouse_down_in_region );
+        bool getMouseDownInHueRegion () { return mMouseDownInHueRegion; };
 
-        void setMouseDownInLumRegion ( BOOL mouse_down_in_region );
-        BOOL getMouseDownInLumRegion () { return mMouseDownInLumRegion; };
+        void setMouseDownInLumRegion ( bool mouse_down_in_region );
+        bool getMouseDownInLumRegion () { return mMouseDownInLumRegion; };
 
-        void setMouseDownInSwatch (BOOL mouse_down_in_swatch);
-        BOOL getMouseDownInSwatch () { return mMouseDownInSwatch; }
+        void setMouseDownInSwatch (bool mouse_down_in_swatch);
+        bool getMouseDownInSwatch () { return mMouseDownInSwatch; }
 
-        BOOL isColorChanged ();
+        bool isColorChanged ();
 
         // called when text entries (RGB/HSL etc.) are changed by user
         void onTextEntryChanged ( LLUICtrl* ctrl );
@@ -113,7 +113,7 @@ class LLFloaterColorPicker
         void hslToRgb ( F32 hValIn, F32 sValIn, F32 lValIn, F32& rValOut, F32& gValOut, F32& bValOut );
         F32  hueToRgb ( F32 val1In, F32 val2In, F32 valHUeIn );
 
-        void setActive(BOOL active);
+        void setActive(bool active);
 
     protected:
         // callbacks
@@ -142,9 +142,9 @@ class LLFloaterColorPicker
 
         const S32 mComponents;
 
-        BOOL mMouseDownInLumRegion;
-        BOOL mMouseDownInHueRegion;
-        BOOL mMouseDownInSwatch;
+        bool mMouseDownInLumRegion;
+        bool mMouseDownInHueRegion;
+        bool mMouseDownInSwatch;
 
         const S32 mRGBViewerImageLeft;
         const S32 mRGBViewerImageTop;
@@ -181,11 +181,11 @@ class LLFloaterColorPicker
         LLColorSwatchCtrl* mSwatch;
 
         // are we actively tied to some output?
-        BOOL    mActive;
+        bool    mActive;
 
         // enable/disable immediate updates
         LLCheckBoxCtrl* mApplyImmediateCheck;
-        BOOL mCanApplyImmediately;
+        bool mCanApplyImmediately;
 
         LLButton* mSelectBtn;
         LLButton* mCancelBtn;
diff --git a/indra/newview/llfloaterconversationlog.cpp b/indra/newview/llfloaterconversationlog.cpp
index 23f5c1e96d..648d3af5a5 100644
--- a/indra/newview/llfloaterconversationlog.cpp
+++ b/indra/newview/llfloaterconversationlog.cpp
@@ -39,7 +39,7 @@ LLFloaterConversationLog::LLFloaterConversationLog(const LLSD& key)
     mEnableCallbackRegistrar.add("CallLog.Check",   boost::bind(&LLFloaterConversationLog::isActionChecked, this, _2));
 }
 
-BOOL LLFloaterConversationLog::postBuild()
+bool LLFloaterConversationLog::postBuild()
 {
     mConversationLogList = getChild<LLConversationLogList>("conversation_log_list");
 
diff --git a/indra/newview/llfloaterconversationlog.h b/indra/newview/llfloaterconversationlog.h
index 9327fae227..85ca37c530 100644
--- a/indra/newview/llfloaterconversationlog.h
+++ b/indra/newview/llfloaterconversationlog.h
@@ -37,9 +37,9 @@ public:
     LLFloaterConversationLog(const LLSD& key);
     virtual ~LLFloaterConversationLog(){};
 
-    virtual BOOL postBuild();
+    bool postBuild() override;
 
-    virtual void draw();
+    void draw() override;
 
     void onFilterEdit(const std::string& search_string);
 
diff --git a/indra/newview/llfloaterconversationpreview.cpp b/indra/newview/llfloaterconversationpreview.cpp
index 92bf91ab05..837aa858f5 100644
--- a/indra/newview/llfloaterconversationpreview.cpp
+++ b/indra/newview/llfloaterconversationpreview.cpp
@@ -60,7 +60,7 @@ LLFloaterConversationPreview::~LLFloaterConversationPreview()
 {
 }
 
-BOOL LLFloaterConversationPreview::postBuild()
+bool LLFloaterConversationPreview::postBuild()
 {
     mChatHistory = getChild<LLChatHistory>("chat_history");
 
@@ -108,7 +108,7 @@ void LLFloaterConversationPreview::setPages(std::list<LLSD>* messages, const std
             delete mMessages; // Clean up temporary message list with "Loading..." text
         }
         mMessages = messages;
-        mCurrentPage = (mMessages->size() ? (mMessages->size() - 1) / mPageSize : 0);
+        mCurrentPage = (mMessages->size() ? (static_cast<int>(mMessages->size()) - 1) / mPageSize : 0);
 
         mPageSpinner->setEnabled(true);
         mPageSpinner->setMaxValue(mCurrentPage+1);
diff --git a/indra/newview/llfloaterconversationpreview.h b/indra/newview/llfloaterconversationpreview.h
index f7f54a318d..563592fb20 100644
--- a/indra/newview/llfloaterconversationpreview.h
+++ b/indra/newview/llfloaterconversationpreview.h
@@ -41,12 +41,12 @@ public:
     LLFloaterConversationPreview(const LLSD& session_id);
     virtual ~LLFloaterConversationPreview();
 
-    virtual BOOL postBuild();
+    bool postBuild() override;
     void setPages(std::list<LLSD>* messages,const std::string& file_name);
 
-    virtual void draw();
-    virtual void onOpen(const LLSD& key);
-    virtual void onClose(bool app_quitting);
+    void draw() override;
+    void onOpen(const LLSD& key) override;
+    void onClose(bool app_quitting) override;
 
 private:
     void onMoreHistoryBtnClick();
diff --git a/indra/newview/llfloatercreatelandmark.cpp b/indra/newview/llfloatercreatelandmark.cpp
index f810f3afe7..77ea544c5d 100644
--- a/indra/newview/llfloatercreatelandmark.cpp
+++ b/indra/newview/llfloatercreatelandmark.cpp
@@ -117,7 +117,7 @@ LLFloaterCreateLandmark::~LLFloaterCreateLandmark()
     removeObserver();
 }
 
-BOOL LLFloaterCreateLandmark::postBuild()
+bool LLFloaterCreateLandmark::postBuild()
 {
     mFolderCombo = getChild<LLComboBox>("folder_combo");
     mLandmarkTitleEditor = getChild<LLLineEditor>("title_editor");
@@ -132,7 +132,7 @@ BOOL LLFloaterCreateLandmark::postBuild()
 
     mLandmarksID = gInventory.findCategoryUUIDForType(LLFolderType::FT_LANDMARK);
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterCreateLandmark::removeObserver()
@@ -349,7 +349,7 @@ void LLFloaterCreateLandmark::onSaveClicked()
         gInventory.accountForUpdate(update);
 
         new_item->setParent(folder_id);
-        new_item->updateParentOnServer(FALSE);
+        new_item->updateParentOnServer(false);
     }
 
     removeObserver();
diff --git a/indra/newview/llfloatercreatelandmark.h b/indra/newview/llfloatercreatelandmark.h
index 89e0a0bb6a..bcf9d8578c 100644
--- a/indra/newview/llfloatercreatelandmark.h
+++ b/indra/newview/llfloatercreatelandmark.h
@@ -45,8 +45,8 @@ public:
     LLFloaterCreateLandmark(const LLSD& key);
     ~LLFloaterCreateLandmark();
 
-    BOOL postBuild();
-    void onOpen(const LLSD& key);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
 
     void setItem(const uuid_set_t& items);
     void updateItem(const uuid_set_t& items, U32 mask);
diff --git a/indra/newview/llfloaterdeleteprefpreset.cpp b/indra/newview/llfloaterdeleteprefpreset.cpp
index 6b87ec2f98..1a01122afb 100644
--- a/indra/newview/llfloaterdeleteprefpreset.cpp
+++ b/indra/newview/llfloaterdeleteprefpreset.cpp
@@ -42,7 +42,7 @@ LLFloaterDeletePrefPreset::LLFloaterDeletePrefPreset(const LLSD &key)
 }
 
 // virtual
-BOOL LLFloaterDeletePrefPreset::postBuild()
+bool LLFloaterDeletePrefPreset::postBuild()
 {
     LLFloaterPreference* preferences = LLFloaterReg::getTypedInstance<LLFloaterPreference>("preferences");
     if (preferences)
@@ -53,7 +53,7 @@ BOOL LLFloaterDeletePrefPreset::postBuild()
     getChild<LLButton>("cancel")->setCommitCallback(boost::bind(&LLFloaterDeletePrefPreset::onBtnCancel, this));
     LLPresetsManager::instance().setPresetListChangeCallback(boost::bind(&LLFloaterDeletePrefPreset::onPresetsListChange, this));
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterDeletePrefPreset::onOpen(const LLSD& key)
diff --git a/indra/newview/llfloaterdeleteprefpreset.h b/indra/newview/llfloaterdeleteprefpreset.h
index f94374edc4..f6ba8c2d19 100644
--- a/indra/newview/llfloaterdeleteprefpreset.h
+++ b/indra/newview/llfloaterdeleteprefpreset.h
@@ -38,8 +38,8 @@ class LLFloaterDeletePrefPreset : public LLFloater
 public:
     LLFloaterDeletePrefPreset(const LLSD &key);
 
-    /*virtual*/ BOOL    postBuild();
-    /*virtual*/ void    onOpen(const LLSD& key);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
 
     void onBtnDelete();
     void onBtnCancel();
diff --git a/indra/newview/llfloaterdestinations.cpp b/indra/newview/llfloaterdestinations.cpp
index 81d7d0078b..93cf02e835 100644
--- a/indra/newview/llfloaterdestinations.cpp
+++ b/indra/newview/llfloaterdestinations.cpp
@@ -45,10 +45,10 @@ LLFloaterDestinations::~LLFloaterDestinations()
 {
 }
 
-BOOL LLFloaterDestinations::postBuild()
+bool LLFloaterDestinations::postBuild()
 {
     enableResizeCtrls(true, true, false);
-    return TRUE;
+    return true;
 }
 
 
diff --git a/indra/newview/llfloaterdestinations.h b/indra/newview/llfloaterdestinations.h
index 3b88f5cc60..e2bc06882a 100644
--- a/indra/newview/llfloaterdestinations.h
+++ b/indra/newview/llfloaterdestinations.h
@@ -36,8 +36,8 @@ class LLFloaterDestinations:
     friend class LLFloaterReg;
 private:
     LLFloaterDestinations(const LLSD& key);
-    /*virtual*/ ~LLFloaterDestinations();
-    /*virtual*/ BOOL postBuild();
+    ~LLFloaterDestinations();
+    bool postBuild() override;
 };
 
 #endif
diff --git a/indra/newview/llfloaterdisplayname.cpp b/indra/newview/llfloaterdisplayname.cpp
index 261dc86e59..236aadfbc1 100644
--- a/indra/newview/llfloaterdisplayname.cpp
+++ b/indra/newview/llfloaterdisplayname.cpp
@@ -45,7 +45,7 @@ class LLFloaterDisplayName : public LLFloater
 public:
     LLFloaterDisplayName(const LLSD& key);
     virtual ~LLFloaterDisplayName() { }
-    /*virtual*/ BOOL    postBuild();
+    /*virtual*/ bool    postBuild();
     void onSave();
     void onReset();
     void onCancel();
@@ -87,7 +87,7 @@ void LLFloaterDisplayName::onOpen(const LLSD& key)
         getChild<LLUICtrl>("save_btn")->setEnabled(false);
         getChild<LLUICtrl>("display_name_editor")->setEnabled(false);
         getChild<LLUICtrl>("display_name_confirm")->setEnabled(false);
-        getChild<LLUICtrl>("cancel_btn")->setFocus(TRUE);
+        getChild<LLUICtrl>("cancel_btn")->setFocus(true);
 
     }
     else
@@ -100,7 +100,7 @@ void LLFloaterDisplayName::onOpen(const LLSD& key)
     }
 }
 
-BOOL LLFloaterDisplayName::postBuild()
+bool LLFloaterDisplayName::postBuild()
 {
     getChild<LLUICtrl>("reset_btn")->setCommitCallback(boost::bind(&LLFloaterDisplayName::onReset, this));
     getChild<LLUICtrl>("cancel_btn")->setCommitCallback(boost::bind(&LLFloaterDisplayName::onCancel, this));
@@ -108,7 +108,7 @@ BOOL LLFloaterDisplayName::postBuild()
 
     center();
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterDisplayName::onCacheSetName(bool success,
@@ -171,7 +171,7 @@ void LLFloaterDisplayName::onReset()
     {
         // UI is enabled, fill the first field
         getChild<LLUICtrl>("display_name_confirm")->clear();
-        getChild<LLUICtrl>("display_name_confirm")->setFocus(TRUE);
+        getChild<LLUICtrl>("display_name_confirm")->setFocus(true);
     }
     else
     {
diff --git a/indra/newview/llfloatereditenvironmentbase.cpp b/indra/newview/llfloatereditenvironmentbase.cpp
index 109c7a286c..bd5839ed17 100644
--- a/indra/newview/llfloatereditenvironmentbase.cpp
+++ b/indra/newview/llfloatereditenvironmentbase.cpp
@@ -443,7 +443,7 @@ void LLFloaterEditEnvironmentBase::onInventoryCreated(LLUUID asset_id, LLUUID in
     }
 
     clearDirtyFlag();
-    setFocus(TRUE);                 // Call back the focus...
+    setFocus(true);                 // Call back the focus...
     loadInventoryItem(inventory_id, can_trans);
 }
 
diff --git a/indra/newview/llfloatereditenvironmentbase.h b/indra/newview/llfloatereditenvironmentbase.h
index 1b7771fe94..37fda5d33e 100644
--- a/indra/newview/llfloatereditenvironmentbase.h
+++ b/indra/newview/llfloatereditenvironmentbase.h
@@ -57,7 +57,7 @@ public:
 
     virtual LLSettingsBase::ptr_t   getEditSettings()   const = 0;
 
-    virtual BOOL            isDirty() const override            { return getIsDirty(); }
+    virtual bool            isDirty() const override            { return getIsDirty(); }
 
 protected:
     typedef std::function<void()> on_confirm_fn;
diff --git a/indra/newview/llfloatereditextdaycycle.cpp b/indra/newview/llfloatereditextdaycycle.cpp
index 2db1ef381d..ebccb2214c 100644
--- a/indra/newview/llfloatereditextdaycycle.cpp
+++ b/indra/newview/llfloatereditextdaycycle.cpp
@@ -203,7 +203,7 @@ LLFloaterEditExtDayCycle::~LLFloaterEditExtDayCycle()
 }
 
 // virtual
-BOOL LLFloaterEditExtDayCycle::postBuild()
+bool LLFloaterEditExtDayCycle::postBuild()
 {
     getChild<LLLineEditor>(TXT_DAY_NAME)->setKeystrokeCallback(boost::bind(&LLFloaterEditExtDayCycle::onCommitName, this, _1, _2), NULL);
 
@@ -264,7 +264,7 @@ BOOL LLFloaterEditExtDayCycle::postBuild()
             panel->setOnDirtyFlagChanged([this](LLPanel *, bool val) { onPanelDirtyFlagChanged(val); });
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterEditExtDayCycle::onOpen(const LLSD& key)
@@ -423,7 +423,7 @@ void LLFloaterEditExtDayCycle::onClose(bool app_quitting)
 }
 
 
-void LLFloaterEditExtDayCycle::onVisibilityChange(BOOL new_visibility)
+void LLFloaterEditExtDayCycle::onVisibilityChange(bool new_visibility)
 {
 }
 
@@ -534,7 +534,7 @@ void LLFloaterEditExtDayCycle::setEditName(const std::string &name)
 }
 
 /* virtual */
-BOOL LLFloaterEditExtDayCycle::handleKeyUp(KEY key, MASK mask, BOOL called_from_parent)
+bool LLFloaterEditExtDayCycle::handleKeyUp(KEY key, MASK mask, bool called_from_parent)
 {
     if (!mEditDay)
     {
@@ -890,7 +890,7 @@ void LLFloaterEditExtDayCycle::onFrameSliderCallback(const LLSD &data)
         keymap_t::iterator it = mSliderKeyMap.find(curslider);
         if (it != mSliderKeyMap.end())
         {
-            if (gKeyboard->currentMask(TRUE) == MASK_SHIFT && mShiftCopyEnabled && mCanMod)
+            if (gKeyboard->currentMask(true) == MASK_SHIFT && mShiftCopyEnabled && mCanMod)
             {
                 // don't move the point/frame as long as shift is pressed and user is attempting to copy
                 // handleKeyUp will do the move if user releases key too early.
@@ -961,7 +961,7 @@ void LLFloaterEditExtDayCycle::onFrameSliderMouseDown(S32 x, S32 y, MASK mask)
 
     std::string slidername = mFramesSlider->getCurSlider();
 
-    mShiftCopyEnabled = !slidername.empty() && gKeyboard->currentMask(TRUE) == MASK_SHIFT;
+    mShiftCopyEnabled = !slidername.empty() && gKeyboard->currentMask(true) == MASK_SHIFT;
 
     if (!slidername.empty())
     {
@@ -1195,7 +1195,7 @@ void LLFloaterEditExtDayCycle::updateButtons()
         }
         else
         {
-            for (S32 track = 1; track < LLSettingsDay::TRACK_MAX; ++track)
+            for (U32 track = 1; track < LLSettingsDay::TRACK_MAX; ++track)
             {
                 if (track == mCurrentTrack)
                     continue;
@@ -1213,14 +1213,14 @@ void LLFloaterEditExtDayCycle::updateButtons()
     mDeleteFrameButton->setEnabled(can_manipulate && isRemovingFrameAllowed());
     mLoadFrame->setEnabled(can_manipulate);
 
-    BOOL enable_play = mEditDay ? TRUE : FALSE;
+    bool enable_play = (bool)mEditDay;
     childSetEnabled(BTN_PLAY, enable_play);
     childSetEnabled(BTN_SKIP_BACK, enable_play);
     childSetEnabled(BTN_SKIP_FORWARD, enable_play);
 
     // update track buttons
     bool extended_env = LLEnvironment::instance().isExtendedEnvironmentEnabled();
-    for (S32 track = 0; track < LLSettingsDay::TRACK_MAX; ++track)
+    for (U32 track = 0; track < LLSettingsDay::TRACK_MAX; ++track)
     {
         LLButton* button = getChild<LLButton>(track_tabs[track], true);
         button->setEnabled(extended_env);
@@ -1562,8 +1562,8 @@ void LLFloaterEditExtDayCycle::startPlay()
     gIdleCallbacks.addFunction(onIdlePlay, this);
     mPlayStartFrame = mTimeSlider->getCurSliderValue();
 
-    getChild<LLView>("play_layout", true)->setVisible(FALSE);
-    getChild<LLView>("pause_layout", true)->setVisible(TRUE);
+    getChild<LLView>("play_layout", true)->setVisible(false);
+    getChild<LLView>("pause_layout", true)->setVisible(true);
 }
 
 void LLFloaterEditExtDayCycle::stopPlay()
@@ -1577,8 +1577,8 @@ void LLFloaterEditExtDayCycle::stopPlay()
     F32 frame = mTimeSlider->getCurSliderValue();
     selectFrame(frame, LLSettingsDay::DEFAULT_FRAME_SLOP_FACTOR);
 
-    getChild<LLView>("play_layout", true)->setVisible(TRUE);
-    getChild<LLView>("pause_layout", true)->setVisible(FALSE);
+    getChild<LLView>("play_layout", true)->setVisible(true);
+    getChild<LLView>("pause_layout", true)->setVisible(false);
 }
 
 //static
@@ -1698,7 +1698,7 @@ void LLFloaterEditExtDayCycle::doOpenInventoryFloater(LLSettingsType::type_e typ
         picker->setTrackMode(LLFloaterSettingsPicker::TRACK_NONE);
     }
     picker->openFloater();
-    picker->setFocus(TRUE);
+    picker->setFocus(true);
 }
 
 void LLFloaterEditExtDayCycle::onPickerCommitSetting(LLUUID item_id, S32 track)
diff --git a/indra/newview/llfloatereditextdaycycle.h b/indra/newview/llfloatereditextdaycycle.h
index 0f32a1b5e2..655915b6e8 100644
--- a/indra/newview/llfloatereditextdaycycle.h
+++ b/indra/newview/llfloatereditextdaycycle.h
@@ -79,12 +79,12 @@ public:
                                 LLFloaterEditExtDayCycle(const LLSD &key);
     virtual                     ~LLFloaterEditExtDayCycle();
 
-    virtual BOOL                postBuild() override;
+    virtual bool                postBuild() override;
     virtual void                onOpen(const LLSD& key) override;
     virtual void                onClose(bool app_quitting) override;
     //virtual void                onFocusReceived() override;
     //virtual void                onFocusLost() override;
-    virtual void                onVisibilityChange(BOOL new_visibility) override;
+    virtual void                onVisibilityChange(bool new_visibility) override;
 
     connection_t                setEditCommitSignal(edit_commit_signal_t::slot_type cb);
 
@@ -100,7 +100,7 @@ public:
     virtual LLSettingsBase::ptr_t getEditSettings()   const override { return mEditDay; }
 
 
-    BOOL                        handleKeyUp(KEY key, MASK mask, BOOL called_from_parent) override;
+    bool                        handleKeyUp(KEY key, MASK mask, bool called_from_parent) override;
 
 protected:
     virtual void                setEditSettingsAndUpdate(const LLSettingsBase::ptr_t &settings) override;
diff --git a/indra/newview/llfloatereditsky.cpp b/indra/newview/llfloatereditsky.cpp
deleted file mode 100644
index 58e58cfc5d..0000000000
--- a/indra/newview/llfloatereditsky.cpp
+++ /dev/null
@@ -1,699 +0,0 @@
-/**
- * @file llfloatereditsky.cpp
- * @brief Floater to create or edit a sky preset
- *
- * $LicenseInfo:firstyear=2011&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2011, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "llviewerprecompiledheaders.h"
-
-#include "llfloatereditsky.h"
-
-#include <boost/make_shared.hpp>
-
-// libs
-#include "llbutton.h"
-#include "llcheckboxctrl.h"
-#include "llcombobox.h"
-#include "llmultisliderctrl.h"
-#include "llnotifications.h"
-#include "llnotificationsutil.h"
-#include "llsliderctrl.h"
-#include "lltabcontainer.h"
-#include "lltimectrl.h"
-#include "lljoystickbutton.h"
-
-// newview
-#include "llagent.h"
-#include "llcolorswatch.h"
-#include "llregioninfomodel.h"
-#include "llviewerregion.h"
-
-#include "v3colorutil.h"
-#include "llenvironment.h"
-#include "llenvadapters.h"
-
-namespace
-{
-    const F32 WL_SUN_AMBIENT_SLIDER_SCALE(3.0f);
-    const F32 WL_BLUE_HORIZON_DENSITY_SCALE(2.0f);
-    const F32 WL_CLOUD_SLIDER_SCALE(1.0f);
-}
-
-
-static F32 time24_to_sun_pos(F32 time24)
-{
-    F32 sun_pos = fmodf((time24 - 6) / 24.0f, 1.0f);
-    if (sun_pos < 0) ++sun_pos;
-    return sun_pos;
-}
-
-LLFloaterEditSky::LLFloaterEditSky(const LLSD &key):
-    LLFloater(key),
-    mSkyPresetNameEditor(NULL),
-    mSkyPresetCombo(NULL),
-    mMakeDefaultCheckBox(NULL),
-    mSaveButton(NULL),
-    mSkyAdapter()
-{
-}
-
-// virtual
-BOOL LLFloaterEditSky::postBuild()
-{
-    mSkyPresetNameEditor = getChild<LLLineEditor>("sky_preset_name");
-    mSkyPresetCombo = getChild<LLComboBox>("sky_preset_combo");
-    mMakeDefaultCheckBox = getChild<LLCheckBoxCtrl>("make_default_cb");
-    mSaveButton = getChild<LLButton>("save");
-    mSkyAdapter = std::make_shared<LLSkySettingsAdapter>();
-
-    LLEnvironment::instance().setSkyListChange(boost::bind(&LLFloaterEditSky::onSkyPresetListChange, this));
-
-    initCallbacks();
-
-//  // Create the sun position scrubber on the slider.
-//  getChild<LLMultiSliderCtrl>("WLSunPos")->addSlider(12.f);
-
-    return TRUE;
-}
-
-// virtual
-void LLFloaterEditSky::onOpen(const LLSD& key)
-{
-    bool new_preset = isNewPreset();
-    std::string param = key.asString();
-    std::string floater_title = getString(std::string("title_") + param);
-    std::string hint = getString(std::string("hint_" + param));
-
-    // Update floater title.
-    setTitle(floater_title);
-
-    // Update the hint at the top.
-    getChild<LLUICtrl>("hint")->setValue(hint);
-
-    // Hide the hint to the right of the combo if we're invoked to create a new preset.
-    getChildView("note")->setVisible(!new_preset);
-
-    // Switch between the sky presets combobox and preset name input field.
-    mSkyPresetCombo->setVisible(!new_preset);
-    mSkyPresetNameEditor->setVisible(new_preset);
-
-    reset();
-}
-
-// virtual
-void LLFloaterEditSky::onClose(bool app_quitting)
-{
-    if (!app_quitting) // there's no point to change environment if we're quitting
-    {
-        LLEnvironment::instance().clearEnvironment(LLEnvironment::ENV_EDIT);
-        LLEnvironment::instance().setSelectedEnvironment(LLEnvironment::ENV_LOCAL);
-    }
-}
-
-// virtual
-void LLFloaterEditSky::draw()
-{
-    syncControls();
-    LLFloater::draw();
-}
-
-void LLFloaterEditSky::initCallbacks(void)
-{
-    // *TODO: warn user if a region environment update comes while we're editing a region sky preset.
-
-    mSkyPresetNameEditor->setKeystrokeCallback(boost::bind(&LLFloaterEditSky::onSkyPresetNameEdited, this), NULL);
-    mSkyPresetCombo->setCommitCallback(boost::bind(&LLFloaterEditSky::onSkyPresetSelected, this));
-    mSkyPresetCombo->setTextEntryCallback(boost::bind(&LLFloaterEditSky::onSkyPresetNameEdited, this));
-
-    mSaveButton->setCommitCallback(boost::bind(&LLFloaterEditSky::onBtnSave, this));
-    getChild<LLButton>("cancel")->setCommitCallback(boost::bind(&LLFloaterEditSky::onBtnCancel, this));
-
-    // Connect to region info updates.
-    LLRegionInfoModel::instance().setUpdateCallback(boost::bind(&LLFloaterEditSky::onRegionInfoUpdate, this));
-
-    // sunlight
-    getChild<LLUICtrl>("WLSunlight")->setCommitCallback(boost::bind(&LLFloaterEditSky::onColorControlMoved, this, _1, &mSkyAdapter->mSunlight));
-
-    // glow
-    getChild<LLUICtrl>("WLGlowR")->setCommitCallback(boost::bind(&LLFloaterEditSky::onGlowRMoved, this, _1, &mSkyAdapter->mGlow));
-    getChild<LLUICtrl>("WLGlowB")->setCommitCallback(boost::bind(&LLFloaterEditSky::onGlowBMoved, this, _1, &mSkyAdapter->mGlow));
-
-    // time of day
-//     getChild<LLUICtrl>("WLSunPos")->setCommitCallback(boost::bind(&LLFloaterEditSky::onSunMoved, this, _1, &mSkyAdapter->mLightnorm));     // multi-slider
-//  getChild<LLTimeCtrl>("WLDayTime")->setCommitCallback(boost::bind(&LLFloaterEditSky::onTimeChanged, this));                          // time ctrl
-//     getChild<LLUICtrl>("WLEastAngle")->setCommitCallback(boost::bind(&LLFloaterEditSky::onSunMoved, this, _1, &mSkyAdapter->mLightnorm));
-    getChild<LLJoystickQuaternion>("WLSunRotation")->setCommitCallback(boost::bind(&LLFloaterEditSky::onSunRotationChanged, this));
-    getChild<LLJoystickQuaternion>("WLMoonRotation")->setCommitCallback(boost::bind(&LLFloaterEditSky::onMoonRotationChanged, this));
-
-    // Clouds
-
-    // Cloud Color
-    getChild<LLUICtrl>("WLCloudColor")->setCommitCallback(boost::bind(&LLFloaterEditSky::onColorControlMoved, this, _1, &mSkyAdapter->mCloudColor));
-
-    // Cloud
-    getChild<LLUICtrl>("WLCloudX")->setCommitCallback(boost::bind(&LLFloaterEditSky::onColorControlRMoved, this, _1, &mSkyAdapter->mCloudMain));
-    getChild<LLUICtrl>("WLCloudY")->setCommitCallback(boost::bind(&LLFloaterEditSky::onColorControlGMoved, this, _1, &mSkyAdapter->mCloudMain));
-    getChild<LLUICtrl>("WLCloudDensity")->setCommitCallback(boost::bind(&LLFloaterEditSky::onColorControlBMoved, this, _1, &mSkyAdapter->mCloudMain));
-
-    // Cloud Detail
-    getChild<LLUICtrl>("WLCloudDetailX")->setCommitCallback(boost::bind(&LLFloaterEditSky::onColorControlRMoved, this, _1, &mSkyAdapter->mCloudDetail));
-    getChild<LLUICtrl>("WLCloudDetailY")->setCommitCallback(boost::bind(&LLFloaterEditSky::onColorControlGMoved, this, _1, &mSkyAdapter->mCloudDetail));
-    getChild<LLUICtrl>("WLCloudDetailDensity")->setCommitCallback(boost::bind(&LLFloaterEditSky::onColorControlBMoved, this, _1, &mSkyAdapter->mCloudDetail));
-
-    // Cloud extras
-    getChild<LLUICtrl>("WLCloudCoverage")->setCommitCallback(boost::bind(&LLFloaterEditSky::onFloatControlMoved, this, _1, &mSkyAdapter->mCloudCoverage));
-    getChild<LLUICtrl>("WLCloudScale")->setCommitCallback(boost::bind(&LLFloaterEditSky::onFloatControlMoved, this, _1, &mSkyAdapter->mCloudScale));
-    getChild<LLUICtrl>("WLCloudScrollX")->setCommitCallback(boost::bind(&LLFloaterEditSky::onCloudScrollXMoved, this, _1));
-    getChild<LLUICtrl>("WLCloudScrollY")->setCommitCallback(boost::bind(&LLFloaterEditSky::onCloudScrollYMoved, this, _1));
-
-
-    // Dome
-    getChild<LLUICtrl>("WLGamma")->setCommitCallback(boost::bind(&LLFloaterEditSky::onFloatControlMoved, this, _1, &mSkyAdapter->mWLGamma));
-    getChild<LLUICtrl>("WLStarAlpha")->setCommitCallback(boost::bind(&LLFloaterEditSky::onStarAlphaMoved, this, _1));
-}
-
-//=================================================================================================
-
-void LLFloaterEditSky::syncControls()
-{
-    LLSettingsSky::ptr_t psky = LLEnvironment::instance().getCurrentSky();
-    mEditSettings = psky;
-
-    std::string name = psky->getName();
-
-    mSkyPresetNameEditor->setText(name);
-    mSkyPresetCombo->setValue(name);
-
-    // Lighting
-
-    // sunlight
-    mSkyAdapter->mSunlight.setColor3( psky->getSunlightColor() );
-    setColorSwatch("WLSunlight", mSkyAdapter->mSunlight, WL_SUN_AMBIENT_SLIDER_SCALE);
-
-    // glow
-    mSkyAdapter->mGlow.setColor3( psky->getGlow() );
-    childSetValue("WLGlowR", 2 - mSkyAdapter->mGlow.getRed() / 20.0f);
-    childSetValue("WLGlowB", -mSkyAdapter->mGlow.getBlue() / 5.0f);
-
-// LLSettingsSky::azimalt_t azal = psky->getSunRotationAzAl();
-//
-//  F32 time24 = sun_pos_to_time24(azal.second / F_TWO_PI);
-//  getChild<LLMultiSliderCtrl>("WLSunPos")->setCurSliderValue(time24, TRUE);
-//  getChild<LLTimeCtrl>("WLDayTime")->setTime24(time24);
-//  childSetValue("WLEastAngle", azal.first / F_TWO_PI);
-    getChild<LLJoystickQuaternion>("WLSunRotation")->setRotation(psky->getSunRotation());
-    getChild<LLJoystickQuaternion>("WLMoonRotation")->setRotation(psky->getMoonRotation());
-
-    // Clouds
-
-    // Cloud Color
-    mSkyAdapter->mCloudColor.setColor3( psky->getCloudColor() );
-    setColorSwatch("WLCloudColor", mSkyAdapter->mCloudColor, WL_CLOUD_SLIDER_SCALE);
-
-    // Cloud
-    mSkyAdapter->mCloudMain.setColor3( psky->getCloudPosDensity1() );
-    childSetValue("WLCloudX", mSkyAdapter->mCloudMain.getRed());
-    childSetValue("WLCloudY", mSkyAdapter->mCloudMain.getGreen());
-    childSetValue("WLCloudDensity", mSkyAdapter->mCloudMain.getBlue());
-
-    // Cloud Detail
-    mSkyAdapter->mCloudDetail.setColor3( psky->getCloudPosDensity2() );
-    childSetValue("WLCloudDetailX", mSkyAdapter->mCloudDetail.getRed());
-    childSetValue("WLCloudDetailY", mSkyAdapter->mCloudDetail.getGreen());
-    childSetValue("WLCloudDetailDensity", mSkyAdapter->mCloudDetail.getBlue());
-
-    // Cloud extras
-    mSkyAdapter->mCloudCoverage = psky->getCloudShadow();
-    mSkyAdapter->mCloudScale = psky->getCloudScale();
-    childSetValue("WLCloudCoverage", (F32) mSkyAdapter->mCloudCoverage);
-    childSetValue("WLCloudScale", (F32) mSkyAdapter->mCloudScale);
-
-    // cloud scrolling
-    LLVector2 scroll_rate = psky->getCloudScrollRate();
-
-    // LAPRAS: These should go away...
-    childDisable("WLCloudLockX");
-    childDisable("WLCloudLockY");
-
-    // disable if locked, enable if not
-    childEnable("WLCloudScrollX");
-    childEnable("WLCloudScrollY");
-
-    // *HACK cloud scrolling is off my an additive of 10
-    childSetValue("WLCloudScrollX", scroll_rate[0] - 10.0f);
-    childSetValue("WLCloudScrollY", scroll_rate[1] - 10.0f);
-
-    // Tweak extras
-
-    mSkyAdapter->mWLGamma = psky->getGamma();
-    childSetValue("WLGamma", (F32) mSkyAdapter->mWLGamma);
-
-    childSetValue("WLStarAlpha", psky->getStarBrightness());
-}
-
-void LLFloaterEditSky::setColorSwatch(const std::string& name, const WLColorControl& from_ctrl, F32 k)
-{
-    // Set the value, dividing it by <k> first.
-    LLColor4 color = from_ctrl.getColor4();
-    getChild<LLColorSwatchCtrl>(name)->set(color / k);
-}
-
-// color control callbacks
-void LLFloaterEditSky::onColorControlMoved(LLUICtrl* ctrl, WLColorControl* color_ctrl)
-{
-    LLColorSwatchCtrl* swatch = static_cast<LLColorSwatchCtrl*>(ctrl);
-    LLColor4 color_vec(swatch->get().mV);
-
-    // Multiply RGB values by the appropriate factor.
-    F32 k = WL_CLOUD_SLIDER_SCALE;
-    if (color_ctrl->getIsSunOrAmbientColor())
-    {
-        k = WL_SUN_AMBIENT_SLIDER_SCALE;
-    }
-    else if (color_ctrl->getIsBlueHorizonOrDensity())
-    {
-        k = WL_BLUE_HORIZON_DENSITY_SCALE;
-    }
-
-    color_vec *= k; // intensity isn't affected by the multiplication
-
-    // Set intensity to maximum of the RGB values.
-    color_vec.mV[3] = color_max(color_vec);
-
-    // Apply the new RGBI value.
-    color_ctrl->setColor4(color_vec);
-    color_ctrl->update(mEditSettings);
-}
-
-void LLFloaterEditSky::onColorControlRMoved(LLUICtrl* ctrl, void* userdata)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-    WLColorControl* color_ctrl = static_cast<WLColorControl *>(userdata);
-
-    F32 red_value = sldr_ctrl->getValueF32();
-    F32 k = 1.0f;
-
-    if (color_ctrl->getIsSunOrAmbientColor())
-    {
-        k = WL_SUN_AMBIENT_SLIDER_SCALE;
-    }
-    if (color_ctrl->getIsBlueHorizonOrDensity())
-    {
-        k = WL_BLUE_HORIZON_DENSITY_SCALE;
-    }
-    color_ctrl->setRed(red_value * k);
-
-    adjustIntensity(color_ctrl, red_value, k);
-    color_ctrl->update(mEditSettings);
-}
-
-void LLFloaterEditSky::onColorControlGMoved(LLUICtrl* ctrl, void* userdata)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-    WLColorControl* color_ctrl = static_cast<WLColorControl *>(userdata);
-
-    F32 green_value = sldr_ctrl->getValueF32();
-    F32 k = 1.0f;
-
-    if (color_ctrl->getIsSunOrAmbientColor())
-    {
-        k = WL_SUN_AMBIENT_SLIDER_SCALE;
-    }
-    if (color_ctrl->getIsBlueHorizonOrDensity())
-    {
-        k = WL_BLUE_HORIZON_DENSITY_SCALE;
-    }
-    color_ctrl->setGreen(green_value * k);
-
-    adjustIntensity(color_ctrl, green_value, k);
-    color_ctrl->update(mEditSettings);
-}
-
-void LLFloaterEditSky::onColorControlBMoved(LLUICtrl* ctrl, void* userdata)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-    WLColorControl* color_ctrl = static_cast<WLColorControl *>(userdata);
-
-    F32 blue_value = sldr_ctrl->getValueF32();
-    F32 k = 1.0f;
-
-    if (color_ctrl->getIsSunOrAmbientColor())
-    {
-        k = WL_SUN_AMBIENT_SLIDER_SCALE;
-    }
-    if (color_ctrl->getIsBlueHorizonOrDensity())
-    {
-        k = WL_BLUE_HORIZON_DENSITY_SCALE;
-    }
-    color_ctrl->setBlue(blue_value * k);
-
-    adjustIntensity(color_ctrl, blue_value, k);
-    color_ctrl->update(mEditSettings);
-}
-
-void LLFloaterEditSky::adjustIntensity(WLColorControl *ctrl, F32 val, F32 scale)
-{
-    if (ctrl->getHasSliderName())
-    {
-        LLColor4 color = ctrl->getColor4();
-        F32 i = color_max(color) / scale;
-        ctrl->setIntensity(i);
-        std::string name = ctrl->getSliderName();
-        name.append("I");
-
-        childSetValue(name, i);
-    }
-}
-
-
-/// GLOW SPECIFIC CODE
-void LLFloaterEditSky::onGlowRMoved(LLUICtrl* ctrl, void* userdata)
-{
-
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-    WLColorControl* color_ctrl = static_cast<WLColorControl *>(userdata);
-
-    // scaled by 20
-    color_ctrl->setRed((2 - sldr_ctrl->getValueF32()) * 20);
-
-    color_ctrl->update(mEditSettings);
-}
-
-/// \NOTE that we want NEGATIVE (-) B
-void LLFloaterEditSky::onGlowBMoved(LLUICtrl* ctrl, void* userdata)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-    WLColorControl* color_ctrl = static_cast<WLColorControl *>(userdata);
-
-    /// \NOTE that we want NEGATIVE (-) B and NOT by 20 as 20 is too big
-    color_ctrl->setBlue(-sldr_ctrl->getValueF32() * 5);
-
-    color_ctrl->update(mEditSettings);
-}
-
-void LLFloaterEditSky::onFloatControlMoved(LLUICtrl* ctrl, void* userdata)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-    WLFloatControl * floatControl = static_cast<WLFloatControl *>(userdata);
-
-    floatControl->setValue(sldr_ctrl->getValueF32() / floatControl->getMult());
-
-    floatControl->update(mEditSettings);
-}
-
-
-// Lighting callbacks
-
-// time of day
-void LLFloaterEditSky::onSunMoved(LLUICtrl* ctrl, void* userdata)
-{
-    LLMultiSliderCtrl* sun_msldr = getChild<LLMultiSliderCtrl>("WLSunPos");
-    LLSliderCtrl* east_sldr = getChild<LLSliderCtrl>("WLEastAngle");
-    LLTimeCtrl* time_ctrl = getChild<LLTimeCtrl>("WLDayTime");
-    WLColorControl* color_ctrl = static_cast<WLColorControl *>(userdata);
-
-    F32 time24  = sun_msldr->getCurSliderValue();
-    time_ctrl->setTime24(time24); // sync the time ctrl with the new sun position
-
-    // get the two angles
-    F32 azimuth = F_TWO_PI * east_sldr->getValueF32();
-    F32 altitude = F_TWO_PI * time24_to_sun_pos(time24);
-    mEditSettings->setSunRotation(azimuth, altitude);
-    mEditSettings->setMoonRotation(azimuth + F_PI, -altitude);
-
-    LLVector4 sunnorm( mEditSettings->getSunDirection(), 1.f );
-
-    color_ctrl->update(mEditSettings);
-}
-
-void LLFloaterEditSky::onTimeChanged()
-{
-    F32 time24 = getChild<LLTimeCtrl>("WLDayTime")->getTime24();
-    getChild<LLMultiSliderCtrl>("WLSunPos")->setCurSliderValue(time24, TRUE);
-    onSunMoved(getChild<LLUICtrl>("WLSunPos"), &(mSkyAdapter->mLightnorm));
-}
-
-void LLFloaterEditSky::onSunRotationChanged()
-{
-    LLJoystickQuaternion* sun_spinner = getChild<LLJoystickQuaternion>("WLSunRotation");
-    LLQuaternion sunrot(sun_spinner->getRotation());
-
-    mEditSettings->setSunRotation(sunrot);
-}
-
-void LLFloaterEditSky::onMoonRotationChanged()
-{
-    LLJoystickQuaternion* moon_spinner = getChild<LLJoystickQuaternion>("WLMoonRotation");
-    LLQuaternion moonrot(moon_spinner->getRotation());
-
-    mEditSettings->setMoonRotation(moonrot);
-}
-
-void LLFloaterEditSky::onStarAlphaMoved(LLUICtrl* ctrl)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-
-    mEditSettings->setStarBrightness(sldr_ctrl->getValueF32());
-}
-
-// Clouds
-void LLFloaterEditSky::onCloudScrollXMoved(LLUICtrl* ctrl)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-    // *HACK  all cloud scrolling is off by an additive of 10.
-    mEditSettings->setCloudScrollRateX(sldr_ctrl->getValueF32() + 10.0f);
-}
-
-void LLFloaterEditSky::onCloudScrollYMoved(LLUICtrl* ctrl)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-
-    // *HACK  all cloud scrolling is off by an additive of 10.
-    mEditSettings->setCloudScrollRateY(sldr_ctrl->getValueF32() + 10.0f);
-}
-
-//=================================================================================================
-
-void LLFloaterEditSky::reset()
-{
-    if (isNewPreset())
-    {
-        mSkyPresetNameEditor->setValue(LLSD());
-        mSaveButton->setEnabled(FALSE); // will be enabled as soon as users enters a name
-    }
-    else
-    {
-        refreshSkyPresetsList();
-
-        // Disable controls until a sky preset to edit is selected.
-        enableEditing(false);
-    }
-}
-
-bool LLFloaterEditSky::isNewPreset() const
-{
-    return mKey.asString() == "new";
-}
-
-void LLFloaterEditSky::refreshSkyPresetsList()
-{
-    mSkyPresetCombo->removeall();
-
-    LLEnvironment::list_name_id_t list = LLEnvironment::instance().getSkyList();
-
-    for (LLEnvironment::list_name_id_t::iterator it = list.begin(); it != list.end(); ++it)
-    {
-        mSkyPresetCombo->add((*it).first, llsd::array((*it).first, (*it).second));
-    }
-
-    mSkyPresetCombo->setLabel(getString("combo_label"));
-}
-
-void LLFloaterEditSky::enableEditing(bool enable)
-{
-    // Enable/disable the tab and their contents.
-    LLTabContainer* tab_container = getChild<LLTabContainer>("WindLight Tabs");
-    tab_container->setEnabled(enable);
-    for (S32 i = 0; i < tab_container->getTabCount(); ++i)
-    {
-        tab_container->enableTabButton(i, enable);
-        tab_container->getPanelByIndex(i)->setCtrlsEnabled(enable);
-    }
-
-    // Enable/disable saving.
-    mSaveButton->setEnabled(enable);
-    mMakeDefaultCheckBox->setEnabled(enable);
-}
-
-void LLFloaterEditSky::saveRegionSky()
-{
-#if 0
-    LLWLParamKey key(getSelectedSkyPreset());
-    llassert(key.scope == LLEnvKey::SCOPE_REGION);
-
-    LL_DEBUGS("Windlight") << "Saving region sky preset: " << key.name  << LL_ENDL;
-    LLWLParamManager& wl_mgr = LLWLParamManager::instance();
-    wl_mgr.mCurParams.mName = key.name;
-    wl_mgr.setParamSet(key, wl_mgr.mCurParams);
-
-    // *TODO: save to cached region settings.
-    LL_WARNS("Windlight") << "Saving region sky is not fully implemented yet" << LL_ENDL;
-#endif
-}
-
-std::string LLFloaterEditSky::getSelectedPresetName() const
-{
-    std::string name;
-    if (mSkyPresetNameEditor->getVisible())
-    {
-        name = mSkyPresetNameEditor->getText();
-    }
-    else
-    {
-        LLSD combo_val = mSkyPresetCombo->getValue();
-        name = combo_val[0].asString();
-    }
-
-    return name;
-}
-
-void LLFloaterEditSky::onSkyPresetNameEdited()
-{
-    std::string name = mSkyPresetNameEditor->getText();
-    LLSettingsWater::ptr_t psky = LLEnvironment::instance().getCurrentWater();
-
-    psky->setName(name);
-}
-
-void LLFloaterEditSky::onSkyPresetSelected()
-{
-    std::string name;
-
-    name = getSelectedPresetName();
-
-    LLSettingsSky::ptr_t psky = LLEnvironment::instance().findSkyByName(name);
-
-    if (!psky)
-    {
-        LL_WARNS("WATEREDIT") << "Could not find water preset" << LL_ENDL;
-        enableEditing(false);
-        return;
-    }
-
-    psky = psky->buildClone();
-    LLEnvironment::instance().setEnvironment(LLEnvironment::ENV_EDIT, psky);
-    mEditSettings = psky;
-
-    syncControls();
-    enableEditing(true);
-
-}
-
-bool LLFloaterEditSky::onSaveAnswer(const LLSD& notification, const LLSD& response)
-{
-    S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
-
-    // If they choose save, do it.  Otherwise, don't do anything
-    if (option == 0)
-    {
-        onSaveConfirmed();
-    }
-
-    return false;
-}
-
-void LLFloaterEditSky::onSaveConfirmed()
-{
-    // Save currently displayed water params to the selected preset.
-    std::string name = mEditSettings->getName();
-
-    LL_DEBUGS("Windlight") << "Saving sky preset " << name << LL_ENDL;
-
-    LLEnvironment::instance().addSky(mEditSettings);
-
-    // Change preference if requested.
-    if (mMakeDefaultCheckBox->getEnabled() && mMakeDefaultCheckBox->getValue())
-    {
-        LL_DEBUGS("Windlight") << name << " is now the new preferred sky preset" << LL_ENDL;
-        LLEnvironment::instance().setEnvironment(LLEnvironment::ENV_LOCAL, mEditSettings);
-    }
-
-    closeFloater();
-}
-
-void LLFloaterEditSky::onBtnSave()
-{
-    LLEnvironment::instance().addSky(mEditSettings);
-    LLEnvironment::instance().setEnvironment(LLEnvironment::ENV_LOCAL, mEditSettings);
-
-    closeFloater();
-}
-
-void LLFloaterEditSky::onBtnCancel()
-{
-    closeFloater();
-}
-
-void LLFloaterEditSky::onSkyPresetListChange()
-{
-    refreshSkyPresetsList();
-}
-
-void LLFloaterEditSky::onRegionSettingsChange()
-{
-#if 0
-    // If creating a new sky, don't bother.
-    if (isNewPreset())
-    {
-        return;
-    }
-
-    if (getSelectedSkyPreset().scope == LLEnvKey::SCOPE_REGION) // if editing a region sky
-    {
-        // reset the floater to its initial state
-        reset();
-
-        // *TODO: Notify user?
-    }
-    else // editing a local sky
-    {
-        refreshSkyPresetsList();
-    }
-#endif
-}
-
-void LLFloaterEditSky::onRegionInfoUpdate()
-{
-#if 0
-    bool can_edit = true;
-
-    // If we've selected a region sky preset for editing.
-    if (getSelectedSkyPreset().scope == LLEnvKey::SCOPE_REGION)
-    {
-        // check whether we have the access
-        can_edit = LLEnvManagerNew::canEditRegionSettings();
-    }
-
-    enableEditing(can_edit);
-#endif
-}
diff --git a/indra/newview/llfloatereditwater.cpp b/indra/newview/llfloatereditwater.cpp
deleted file mode 100644
index 9333967b8e..0000000000
--- a/indra/newview/llfloatereditwater.cpp
+++ /dev/null
@@ -1,526 +0,0 @@
-/**
- * @file llfloatereditwater.cpp
- * @brief Floater to create or edit a water preset
- *
- * $LicenseInfo:firstyear=2011&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2011, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "llviewerprecompiledheaders.h"
-
-#include "llfloatereditwater.h"
-
-#include <boost/make_shared.hpp>
-
-// libs
-#include "llbutton.h"
-#include "llcheckboxctrl.h"
-#include "llcolorswatch.h"
-#include "llcombobox.h"
-//#include "llnotifications.h"
-#include "llnotificationsutil.h"
-#include "llsliderctrl.h"
-#include "lltexturectrl.h"
-
-// newview
-#include "llagent.h"
-#include "llregioninfomodel.h"
-#include "llviewerregion.h"
-
-#include "llenvironment.h"
-#include "llsettingswater.h"
-#include "llenvadapters.h"
-
-#include "v3colorutil.h"
-
-#undef max // Fixes a Windows compiler error
-
-LLFloaterEditWater::LLFloaterEditWater(const LLSD &key):
-    LLFloater(key),
-    mWaterPresetNameEditor(NULL),
-    mWaterPresetCombo(NULL),
-    mMakeDefaultCheckBox(NULL),
-    mSaveButton(NULL),
-    mWaterAdapter()
-{
-}
-
-// virtual
-BOOL LLFloaterEditWater::postBuild()
-{
-    mWaterPresetNameEditor = getChild<LLLineEditor>("water_preset_name");
-    mWaterPresetCombo = getChild<LLComboBox>("water_preset_combo");
-    mMakeDefaultCheckBox = getChild<LLCheckBoxCtrl>("make_default_cb");
-    mSaveButton = getChild<LLButton>("save");
-
-    mWaterAdapter = std::make_shared<LLWatterSettingsAdapter>();
-
-    LLEnvironment::instance().setWaterListChange(boost::bind(&LLFloaterEditWater::onWaterPresetListChange, this));
-
-    initCallbacks();
-    refreshWaterPresetsList();
-    syncControls();
-
-    return TRUE;
-}
-
-// virtual
-void LLFloaterEditWater::onOpen(const LLSD& key)
-{
-    bool new_preset = isNewPreset();
-    std::string param = key.asString();
-    std::string floater_title = getString(std::string("title_") + param);
-    std::string hint = getString(std::string("hint_" + param));
-
-    // Update floater title.
-    setTitle(floater_title);
-
-    // Update the hint at the top.
-    getChild<LLUICtrl>("hint")->setValue(hint);
-
-    // Hide the hint to the right of the combo if we're invoked to create a new preset.
-    getChildView("note")->setVisible(!new_preset);
-
-    // Switch between the water presets combobox and preset name input field.
-    mWaterPresetCombo->setVisible(!new_preset);
-    mWaterPresetNameEditor->setVisible(new_preset);
-
-    reset();
-}
-
-// virtual
-void LLFloaterEditWater::onClose(bool app_quitting)
-{
-    if (!app_quitting) // there's no point to change environment if we're quitting
-    {
-        LLEnvironment::instance().clearEnvironment(LLEnvironment::ENV_EDIT);
-        LLEnvironment::instance().setSelectedEnvironment(LLEnvironment::ENV_LOCAL);
-    }
-}
-
-// virtual
-void LLFloaterEditWater::draw()
-{
-    syncControls();
-    LLFloater::draw();
-}
-
-void LLFloaterEditWater::initCallbacks(void)
-{
-    mWaterPresetNameEditor->setKeystrokeCallback(boost::bind(&LLFloaterEditWater::onWaterPresetNameEdited, this), NULL);
-    mWaterPresetCombo->setCommitCallback(boost::bind(&LLFloaterEditWater::onWaterPresetSelected, this));
-    mWaterPresetCombo->setTextEntryCallback(boost::bind(&LLFloaterEditWater::onWaterPresetNameEdited, this));
-
-    mSaveButton->setCommitCallback(boost::bind(&LLFloaterEditWater::onBtnSave, this));
-    getChild<LLButton>("cancel")->setCommitCallback(boost::bind(&LLFloaterEditWater::onBtnCancel, this));
-
-    // Connect to region info updates.
-    LLRegionInfoModel::instance().setUpdateCallback(boost::bind(&LLFloaterEditWater::onRegionInfoUpdate, this));
-
-    //-------------------------------------------------------------------------
-
-    getChild<LLUICtrl>("WaterFogColor")->setCommitCallback(boost::bind(&LLFloaterEditWater::onColorControlMoved, this, _1, &mWaterAdapter->mFogColor));
-
-    // fog density
-    getChild<LLUICtrl>("WaterFogDensity")->setCommitCallback(boost::bind(&LLFloaterEditWater::onExpFloatControlMoved, this, _1, &mWaterAdapter->mFogDensity));
-    getChild<LLUICtrl>("WaterUnderWaterFogMod")->setCommitCallback(boost::bind(&LLFloaterEditWater::onFloatControlMoved, this, _1, &mWaterAdapter->mUnderWaterFogMod));
-
-    // blue density
-    getChild<LLUICtrl>("WaterNormalScaleX")->setCommitCallback(boost::bind(&LLFloaterEditWater::onVector3ControlXMoved, this, _1, &mWaterAdapter->mNormalScale));
-    getChild<LLUICtrl>("WaterNormalScaleY")->setCommitCallback(boost::bind(&LLFloaterEditWater::onVector3ControlYMoved, this, _1, &mWaterAdapter->mNormalScale));
-    getChild<LLUICtrl>("WaterNormalScaleZ")->setCommitCallback(boost::bind(&LLFloaterEditWater::onVector3ControlZMoved, this, _1, &mWaterAdapter->mNormalScale));
-
-    // fresnel
-    getChild<LLUICtrl>("WaterFresnelScale")->setCommitCallback(boost::bind(&LLFloaterEditWater::onFloatControlMoved, this, _1, &mWaterAdapter->mFresnelScale));
-    getChild<LLUICtrl>("WaterFresnelOffset")->setCommitCallback(boost::bind(&LLFloaterEditWater::onFloatControlMoved, this, _1, &mWaterAdapter->mFresnelOffset));
-
-    // scale above/below
-    getChild<LLUICtrl>("WaterScaleAbove")->setCommitCallback(boost::bind(&LLFloaterEditWater::onFloatControlMoved, this, _1, &mWaterAdapter->mScaleAbove));
-    getChild<LLUICtrl>("WaterScaleBelow")->setCommitCallback(boost::bind(&LLFloaterEditWater::onFloatControlMoved, this, _1, &mWaterAdapter->mScaleBelow));
-
-    // blur mult
-    getChild<LLUICtrl>("WaterBlurMult")->setCommitCallback(boost::bind(&LLFloaterEditWater::onFloatControlMoved, this, _1, &mWaterAdapter->mBlurMultiplier));
-
-    // wave direction
-    getChild<LLUICtrl>("WaterWave1DirX")->setCommitCallback(boost::bind(&LLFloaterEditWater::onVector2ControlXMoved, this, _1, &mWaterAdapter->mWave1Dir));
-    getChild<LLUICtrl>("WaterWave1DirY")->setCommitCallback(boost::bind(&LLFloaterEditWater::onVector2ControlYMoved, this, _1, &mWaterAdapter->mWave1Dir));
-    getChild<LLUICtrl>("WaterWave2DirX")->setCommitCallback(boost::bind(&LLFloaterEditWater::onVector2ControlXMoved, this, _1, &mWaterAdapter->mWave2Dir));
-    getChild<LLUICtrl>("WaterWave2DirY")->setCommitCallback(boost::bind(&LLFloaterEditWater::onVector2ControlYMoved, this, _1, &mWaterAdapter->mWave2Dir));
-
-    LLTextureCtrl* texture_ctrl = getChild<LLTextureCtrl>("WaterNormalMap");
-    texture_ctrl->setDefaultImageAssetID(DEFAULT_WATER_NORMAL);
-    texture_ctrl->setCommitCallback(boost::bind(&LLFloaterEditWater::onNormalMapPicked, this, _1));
-}
-
-//=============================================================================
-
-void LLFloaterEditWater::syncControls()
-{
-    // *TODO: Eliminate slow getChild() calls.
-
-    LLSettingsWater::ptr_t pwater = LLEnvironment::instance().getCurrentWater();
-    mEditSettings = pwater;
-
-    std::string name = pwater->getName();
-    mWaterPresetNameEditor->setText(name);
-    mWaterPresetCombo->setValue(name);
-
-    //getChild<LLUICtrl>("WaterGlow")->setValue(col.mV[3]);
-    getChild<LLColorSwatchCtrl>("WaterFogColor")->set(LLColor4(pwater->getWaterFogColor()));
-
-    // fog and wavelets
-    mWaterAdapter->mFogDensity = pwater->getWaterFogDensity();
-    getChild<LLUICtrl>("WaterFogDensity")->setValue(mWaterAdapter->mFogDensity.getExp());
-
-    mWaterAdapter->mUnderWaterFogMod = pwater->getFogMod();
-    getChild<LLUICtrl>("WaterUnderWaterFogMod")->setValue(static_cast<F32>(mWaterAdapter->mUnderWaterFogMod));
-
-    mWaterAdapter->mNormalScale = pwater->getNormalScale();
-    getChild<LLUICtrl>("WaterNormalScaleX")->setValue(mWaterAdapter->mNormalScale.getX());
-    getChild<LLUICtrl>("WaterNormalScaleY")->setValue(mWaterAdapter->mNormalScale.getY());
-    getChild<LLUICtrl>("WaterNormalScaleZ")->setValue(mWaterAdapter->mNormalScale.getZ());
-
-    // Fresnel
-    mWaterAdapter->mFresnelScale = pwater->getFresnelScale();
-    getChild<LLUICtrl>("WaterFresnelScale")->setValue(static_cast<F32>(mWaterAdapter->mFresnelScale));
-    mWaterAdapter->mFresnelOffset = pwater->getFresnelOffset();
-    getChild<LLUICtrl>("WaterFresnelOffset")->setValue(static_cast<F32>(mWaterAdapter->mFresnelOffset));
-
-    // Scale Above/Below
-    mWaterAdapter->mScaleAbove = pwater->getScaleAbove();
-    getChild<LLUICtrl>("WaterScaleAbove")->setValue(static_cast<F32>(mWaterAdapter->mScaleAbove));
-    mWaterAdapter->mScaleBelow = pwater->getScaleBelow();
-    getChild<LLUICtrl>("WaterScaleBelow")->setValue(static_cast<F32>(mWaterAdapter->mScaleBelow));
-
-    // blur mult
-    mWaterAdapter->mBlurMultiplier = pwater->getBlurMultiplier();
-    getChild<LLUICtrl>("WaterBlurMult")->setValue(static_cast<F32>(mWaterAdapter->mBlurMultiplier));
-
-    // wave directions
-    mWaterAdapter->mWave1Dir = pwater->getWave1Dir();
-    getChild<LLUICtrl>("WaterWave1DirX")->setValue(mWaterAdapter->mWave1Dir.getU());
-    getChild<LLUICtrl>("WaterWave1DirY")->setValue(mWaterAdapter->mWave1Dir.getV());
-
-    mWaterAdapter->mWave2Dir = pwater->getWave2Dir();
-    getChild<LLUICtrl>("WaterWave2DirX")->setValue(mWaterAdapter->mWave2Dir.getU());
-    getChild<LLUICtrl>("WaterWave2DirY")->setValue(mWaterAdapter->mWave2Dir.getV());
-
-    LLTextureCtrl* textCtrl = getChild<LLTextureCtrl>("WaterNormalMap");
-    textCtrl->setImageAssetID(pwater->getNormalMapID());
-}
-
-
-// vector control callbacks
-void LLFloaterEditWater::onVector3ControlXMoved(LLUICtrl* ctrl, WLVect3Control* vector_ctrl)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-
-    vector_ctrl->setX( sldr_ctrl->getValueF32() );
-    vector_ctrl->update(mEditSettings);
-}
-
-// vector control callbacks
-void LLFloaterEditWater::onVector3ControlYMoved(LLUICtrl* ctrl, WLVect3Control* vector_ctrl)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-
-    vector_ctrl->setY(sldr_ctrl->getValueF32());
-    vector_ctrl->update(mEditSettings);
-}
-
-// vector control callbacks
-void LLFloaterEditWater::onVector3ControlZMoved(LLUICtrl* ctrl, WLVect3Control* vector_ctrl)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-
-    vector_ctrl->setZ(sldr_ctrl->getValueF32());
-    vector_ctrl->update(mEditSettings);
-}
-
-
-// vector control callbacks
-void LLFloaterEditWater::onVector2ControlXMoved(LLUICtrl* ctrl, WLVect2Control* vector_ctrl)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-
-    vector_ctrl->setU(sldr_ctrl->getValueF32());
-    vector_ctrl->update(mEditSettings);
-}
-
-// vector control callbacks
-void LLFloaterEditWater::onVector2ControlYMoved(LLUICtrl* ctrl, WLVect2Control* vector_ctrl)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-
-    vector_ctrl->setV(sldr_ctrl->getValueF32());
-    vector_ctrl->update(mEditSettings);
-}
-
-void LLFloaterEditWater::onFloatControlMoved(LLUICtrl* ctrl, WLFloatControl* floatControl)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-
-    floatControl->setValue(sldr_ctrl->getValueF32());
-    floatControl->update(mEditSettings);
-}
-
-void LLFloaterEditWater::onExpFloatControlMoved(LLUICtrl* ctrl, WLXFloatControl* expFloatControl)
-{
-    LLSliderCtrl* sldr_ctrl = static_cast<LLSliderCtrl*>(ctrl);
-
-    expFloatControl->setExp(sldr_ctrl->getValueF32());
-    expFloatControl->update(mEditSettings);
-}
-
-void LLFloaterEditWater::onColorControlMoved(LLUICtrl* ctrl, WLColorControl* color_ctrl)
-{
-    LLColorSwatchCtrl* swatch = static_cast<LLColorSwatchCtrl*>(ctrl);
-    color_ctrl->setColor4( swatch->get() );
-    color_ctrl->update(mEditSettings);
-}
-
-void LLFloaterEditWater::onNormalMapPicked(LLUICtrl* ctrl)
-{
-    LLTextureCtrl* textCtrl = static_cast<LLTextureCtrl*>(ctrl);
-    LLUUID textID = textCtrl->getImageAssetID();
-    mEditSettings->setNormalMapID(textID);
-}
-
-//=============================================================================
-
-void LLFloaterEditWater::reset()
-{
-    if (isNewPreset())
-    {
-        mWaterPresetNameEditor->setValue(LLSD());
-        mSaveButton->setEnabled(FALSE); // will be enabled as soon as users enters a name
-    }
-    else
-    {
-        refreshWaterPresetsList();
-
-        // Disable controls until a water preset to edit is selected.
-        enableEditing(false);
-    }
-}
-
-bool LLFloaterEditWater::isNewPreset() const
-{
-    return mKey.asString() == "new";
-}
-
-void LLFloaterEditWater::refreshWaterPresetsList()
-{
-    mWaterPresetCombo->removeall();
-
-    LLEnvironment::list_name_id_t list = LLEnvironment::instance().getWaterList();
-
-    for (LLEnvironment::list_name_id_t::iterator it = list.begin(); it != list.end(); ++it)
-    {
-        mWaterPresetCombo->add((*it).first, llsd::array((*it).first, (*it).second));
-    }
-
-    mWaterPresetCombo->setLabel(getString("combo_label"));
-}
-
-void LLFloaterEditWater::enableEditing(bool enable)
-{
-    // Enable/disable water controls.
-    getChild<LLPanel>("panel_water_preset")->setCtrlsEnabled(enable);
-
-    // Enable/disable saving.
-    mSaveButton->setEnabled(enable);
-    mMakeDefaultCheckBox->setEnabled(enable);
-}
-
-void LLFloaterEditWater::saveRegionWater()
-{
-#if 0
-    llassert(getCurrentScope() == LLEnvKey::SCOPE_REGION); // make sure we're editing region water
-
-    LL_DEBUGS("Windlight") << "Saving region water preset" << LL_ENDL;
-
-    //LLWaterParamSet region_water = water_mgr.mCurParams;
-
-    // *TODO: save to cached region settings.
-    LL_WARNS("Windlight") << "Saving region water is not fully implemented yet" << LL_ENDL;
-#endif
-}
-
-#if 0
-std::string LLFloaterEditWater::getCurrentPresetName() const
-{
-    std::string name;
-    LLEnvKey::EScope scope;
-    getSelectedPreset(name, scope);
-    return name;
-}
-#endif
-
-#if 0
-LLEnvKey::EScope LLFloaterEditWater::getCurrentScope() const
-{
-    std::string name;
-    LLEnvKey::EScope scope;
-    getSelectedPreset(name, scope);
-    return scope;
-}
-#endif
-
-std::string LLFloaterEditWater::getSelectedPresetName() const
-{
-    std::string name;
-    if (mWaterPresetNameEditor->getVisible())
-    {
-        name = mWaterPresetNameEditor->getText();
-    }
-    else
-    {
-        LLSD combo_val = mWaterPresetCombo->getValue();
-        name = combo_val[0].asString();
-    }
-
-    return name;
-}
-
-void LLFloaterEditWater::onWaterPresetNameEdited()
-{
-    std::string name = mWaterPresetNameEditor->getText();
-    LLSettingsWater::ptr_t pwater = LLEnvironment::instance().getCurrentWater();
-
-    pwater->setName(name);
-#if 0
-    // Disable saving a water preset having empty name.
-    mSaveButton->setEnabled(!getCurrentPresetName().empty());
-#endif
-}
-
-void LLFloaterEditWater::onWaterPresetSelected()
-{
-    std::string name;
-
-    name = getSelectedPresetName();
-
-    LLSettingsWater::ptr_t pwater = LLEnvironment::instance().findWaterByName(name);
-
-    if (!pwater)
-    {
-        LL_WARNS("WATEREDIT") << "Could not find water preset" << LL_ENDL;
-        enableEditing(false);
-        return;
-    }
-
-    pwater = pwater->buildClone();
-    LLEnvironment::instance().setEnvironment(LLEnvironment::ENV_EDIT, pwater);
-    mEditSettings = pwater;
-
-    syncControls();
-    enableEditing(true);
-}
-
-bool LLFloaterEditWater::onSaveAnswer(const LLSD& notification, const LLSD& response)
-{
-    S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
-
-    // If they choose save, do it.  Otherwise, don't do anything
-    if (option == 0)
-    {
-        onSaveConfirmed();
-    }
-
-    return false;
-}
-
-void LLFloaterEditWater::onSaveConfirmed()
-{
-    // Save currently displayed water params to the selected preset.
-    std::string name = mEditSettings->getName();
-
-    LL_DEBUGS("Windlight") << "Saving sky preset " << name << LL_ENDL;
-
-    LLEnvironment::instance().addWater(mEditSettings);
-
-    // Change preference if requested.
-    if (mMakeDefaultCheckBox->getEnabled() && mMakeDefaultCheckBox->getValue())
-    {
-        LL_DEBUGS("Windlight") << name << " is now the new preferred water preset" << LL_ENDL;
-        LLEnvironment::instance().setEnvironment(LLEnvironment::ENV_LOCAL, mEditSettings);
-    }
-
-    closeFloater();
-}
-
-void LLFloaterEditWater::onBtnSave()
-{
-    LLEnvironment::instance().addWater(mEditSettings);
-    LLEnvironment::instance().setEnvironment(LLEnvironment::ENV_LOCAL, mEditSettings);
-
-    closeFloater();
-}
-
-void LLFloaterEditWater::onBtnCancel()
-{
-    closeFloater();
-}
-
-void LLFloaterEditWater::onWaterPresetListChange()
-{
-    refreshWaterPresetsList();
-}
-
-void LLFloaterEditWater::onRegionSettingsChange()
-{
-#if 0
-    // If creating a new preset, don't bother.
-    if (isNewPreset())
-    {
-        return;
-    }
-
-    if (getCurrentScope() == LLEnvKey::SCOPE_REGION) // if editing region water
-    {
-        // reset the floater to its initial state
-        reset();
-
-        // *TODO: Notify user?
-    }
-    else // editing a local preset
-    {
-        refreshWaterPresetsList();
-    }
-#endif
-}
-
-void LLFloaterEditWater::onRegionInfoUpdate()
-{
-#if 0
-    bool can_edit = true;
-
-    // If we've selected the region water for editing.
-    if (getCurrentScope() == LLEnvKey::SCOPE_REGION)
-    {
-        // check whether we have the access
-        can_edit = LLEnvManagerNew::canEditRegionSettings();
-    }
-
-    enableEditing(can_edit);
-#endif
-}
diff --git a/indra/newview/llfloateremojipicker.cpp b/indra/newview/llfloateremojipicker.cpp
index c9d14c45f8..a8eea23e4b 100644
--- a/indra/newview/llfloateremojipicker.cpp
+++ b/indra/newview/llfloateremojipicker.cpp
@@ -39,9 +39,9 @@
 #include "llscrolllistctrl.h"
 #include "llscrolllistitem.h"
 #include "llsdserialize.h"
-#include "lltextbox.h" 
+#include "lltextbox.h"
 #include "lltrans.h"
-#include "llviewerchat.h" 
+#include "llviewerchat.h"
 
 namespace {
 // The following variables and constants are used for storing the floater state
@@ -80,7 +80,7 @@ public:
         addChild(mList);
     }
 
-    virtual void updatePanel(BOOL allow_modify) override {}
+    virtual void updatePanel(bool allow_modify) override {}
 
 public:
     LLScrollingPanelList* mList;
@@ -102,19 +102,19 @@ public:
         F32 x = 4; // padding-left
         F32 y = getRect().getHeight() / 2;
         LLFontGL::getFontSansSerif()->render(
-            mText,                      // wstr
-            0,                          // begin_offset
-            x,                          // x
-            y,                          // y
-            LLColor4::white,            // color
-            LLFontGL::LEFT,             // halign
-            LLFontGL::VCENTER,          // valign
-            LLFontGL::NORMAL,           // style
-            LLFontGL::DROP_SHADOW_SOFT, // shadow
-            mText.size());              // max_chars
+            mText,                           // wstr
+            0,                               // begin_offset
+            x,                               // x
+            y,                               // y
+            LLColor4::white,                 // color
+            LLFontGL::LEFT,                  // halign
+            LLFontGL::VCENTER,               // valign
+            LLFontGL::NORMAL,                // style
+            LLFontGL::DROP_SHADOW_SOFT,      // shadow
+            static_cast<S32>(mText.size())); // max_chars
     }
 
-    virtual void updatePanel(BOOL allow_modify) override {}
+    virtual void updatePanel(bool allow_modify) override {}
 
 private:
     const LLWString mText;
@@ -151,7 +151,7 @@ public:
             1);                         // max_chars
     }
 
-    virtual void updatePanel(BOOL allow_modify) override {}
+    virtual void updatePanel(bool allow_modify) override {}
 
     const LLEmojiSearchResult& getData() const { return mData; }
     const LLWString& getChar() const { return mChar; }
@@ -234,17 +234,17 @@ protected:
         {
             std::string text = mTitle.substr(0, mBegin);
             font->renderUTF8(
-                text,                       // text
-                0,                          // begin_offset
-                x0,                         // x
-                y,                          // y
-                color,                      // color
-                LLFontGL::LEFT,             // halign
-                LLFontGL::VCENTER,          // valign
-                LLFontGL::NORMAL,           // style
-                LLFontGL::DROP_SHADOW_SOFT, // shadow
-                text.size(),                // max_chars
-                x1);                        // max_pixels
+                text,                          // text
+                0,                             // begin_offset
+                x0,                            // x
+                y,                             // y
+                color,                         // color
+                LLFontGL::LEFT,                // halign
+                LLFontGL::VCENTER,             // valign
+                LLFontGL::NORMAL,              // style
+                LLFontGL::DROP_SHADOW_SOFT,    // shadow
+                static_cast<S32>(text.size()), // max_chars
+                x1);                           // max_pixels
             F32 dx = font->getWidthF32(text);
             x0 += dx;
             x1 -= dx;
@@ -253,17 +253,17 @@ protected:
         {
             std::string text = mTitle.substr(mBegin, mEnd - mBegin);
             font->renderUTF8(
-                text,                       // text
-                0,                          // begin_offset
-                x0,                         // x
-                y,                          // y
-                LLColor4::yellow6,          // color
-                LLFontGL::LEFT,             // halign
-                LLFontGL::VCENTER,          // valign
-                LLFontGL::NORMAL,           // style
-                LLFontGL::DROP_SHADOW_SOFT, // shadow
-                text.size(),                // max_chars
-                x1);                        // max_pixels
+                text,                          // text
+                0,                             // begin_offset
+                x0,                            // x
+                y,                             // y
+                LLColor4::yellow6,             // color
+                LLFontGL::LEFT,                // halign
+                LLFontGL::VCENTER,             // valign
+                LLFontGL::NORMAL,              // style
+                LLFontGL::DROP_SHADOW_SOFT,    // shadow
+                static_cast<S32>(text.size()), // max_chars
+                x1);                           // max_pixels
             F32 dx = font->getWidthF32(text);
             x0 += dx;
             x1 -= dx;
@@ -272,17 +272,17 @@ protected:
         {
             std::string text = mEnd ? mTitle.substr(mEnd) : mTitle;
             font->renderUTF8(
-                text,                       // text
-                0,                          // begin_offset
-                x0,                         // x
-                y,                          // y
-                color,                      // color
-                LLFontGL::LEFT,             // halign
-                LLFontGL::VCENTER,          // valign
-                LLFontGL::NORMAL,           // style
-                LLFontGL::DROP_SHADOW_SOFT, // shadow
-                text.size(),                // max_chars
-                x1);                        // max_pixels
+                text,                          // text
+                0,                             // begin_offset
+                x0,                            // x
+                y,                             // y
+                color,                         // color
+                LLFontGL::LEFT,                // halign
+                LLFontGL::VCENTER,             // valign
+                LLFontGL::NORMAL,              // style
+                LLFontGL::DROP_SHADOW_SOFT,    // shadow
+                static_cast<S32>(text.size()), // max_chars
+                x1);                           // max_pixels
         }
     }
 
@@ -298,14 +298,14 @@ LLFloaterEmojiPicker::LLFloaterEmojiPicker(const LLSD& key)
 : super(key)
 {
     // This floater should hover on top of our dependent (with the dependent having the focus)
-    setFocusStealsFrontmost(FALSE);
-    setBackgroundVisible(FALSE);
-    setAutoFocus(FALSE);
+    setFocusStealsFrontmost(false);
+    setBackgroundVisible(false);
+    setAutoFocus(false);
 
     loadState();
 }
 
-BOOL LLFloaterEmojiPicker::postBuild()
+bool LLFloaterEmojiPicker::postBuild()
 {
     mGroups = getChild<LLPanel>("Groups");
     mBadge = getChild<LLPanel>("Badge");
@@ -314,7 +314,7 @@ BOOL LLFloaterEmojiPicker::postBuild()
     mDummy = getChild<LLTextBox>("Dummy");
 
     mPreview = new LLEmojiPreviewPanel();
-    mPreview->setVisible(FALSE);
+    mPreview->setVisible(false);
     addChild(mPreview);
 
     return LLFloater::postBuild();
@@ -329,7 +329,7 @@ void LLFloaterEmojiPicker::onOpen(const LLSD& key)
 
     initialize();
 
-    gFloaterView->adjustToFitScreen(this, FALSE);
+    gFloaterView->adjustToFitScreen(this, false);
 }
 
 void LLFloaterEmojiPicker::onClose(bool app_quitting)
@@ -382,7 +382,7 @@ void LLFloaterEmojiPicker::initialize()
             return;
         }
 
-        mGroups->setVisible(FALSE);
+        mGroups->setVisible(false);
         mFocusedIconRow = -1;
         mFocusedIconCol = -1;
         mFocusedIcon = nullptr;
@@ -407,17 +407,17 @@ void LLFloaterEmojiPicker::initialize()
         return;
     }
 
-    mGroups->setVisible(TRUE);
+    mGroups->setVisible(true);
     mPreview->setIcon(nullptr);
     showPreview(true);
 
     mSelectedGroupIndex = groupIndex == ALL_EMOJIS_GROUP_INDEX ? 0 :
-        (1 + std::distance(mFilteredEmojiGroups.begin(),
+        static_cast<U32>((1 + std::distance(mFilteredEmojiGroups.begin(),
             std::find(mFilteredEmojiGroups.begin(), mFilteredEmojiGroups.end(), groupIndex))) %
-        (1 + mFilteredEmojiGroups.size());
+        (1 + mFilteredEmojiGroups.size()));
 
-    mGroupButtons[mSelectedGroupIndex]->setToggleState(TRUE);
-    mGroupButtons[mSelectedGroupIndex]->setUseFontColor(TRUE);
+    mGroupButtons[mSelectedGroupIndex]->setToggleState(true);
+    mGroupButtons[mSelectedGroupIndex]->setUseFontColor(true);
 
     fillEmojis();
 }
@@ -559,9 +559,9 @@ void LLFloaterEmojiPicker::createGroupButton(LLButton::Params& params, const LLR
     button->setMouseLeaveCallback([this](LLUICtrl* ctrl, const LLSD&) { onGroupButtonMouseLeave(ctrl); });
 
     button->setRect(rect);
-    button->setTabStop(FALSE);
+    button->setTabStop(false);
     button->setLabel(LLUIString(LLWString(1, emoji)));
-    button->setUseFontColor(FALSE);
+    button->setUseFontColor(false);
 
     mGroupButtons.push_back(button);
     mGroups->addChild(button);
@@ -598,13 +598,13 @@ void LLFloaterEmojiPicker::selectEmojiGroup(U32 index)
 
     if (mSelectedGroupIndex < mGroupButtons.size())
     {
-        mGroupButtons[mSelectedGroupIndex]->setUseFontColor(FALSE);
-        mGroupButtons[mSelectedGroupIndex]->setToggleState(FALSE);
+        mGroupButtons[mSelectedGroupIndex]->setUseFontColor(false);
+        mGroupButtons[mSelectedGroupIndex]->setToggleState(false);
     }
 
     mSelectedGroupIndex = index;
-    mGroupButtons[mSelectedGroupIndex]->setToggleState(TRUE);
-    mGroupButtons[mSelectedGroupIndex]->setUseFontColor(TRUE);
+    mGroupButtons[mSelectedGroupIndex]->setToggleState(true);
+    mGroupButtons[mSelectedGroupIndex]->setUseFontColor(true);
 
     LLButton* button = mGroupButtons[mSelectedGroupIndex];
     LLRect rect = mBadge->getRect();
@@ -658,7 +658,7 @@ void LLFloaterEmojiPicker::fillEmojis(bool fromResize)
 
     LLScrollingPanelList::Params row_list_params;
     row_list_params.rect = row_panel_params.rect;
-    row_list_params.is_horizontal = TRUE;
+    row_list_params.is_horizontal = true;
     row_list_params.padding = 0;
     row_list_params.spacing = icon_spacing;
 
@@ -800,8 +800,8 @@ void LLFloaterEmojiPicker::createEmojiIcon(const LLEmojiSearchResult& emoji,
 void LLFloaterEmojiPicker::showPreview(bool show)
 {
     //mPreview->setIcon(nullptr);
-    mDummy->setVisible(show ? FALSE : TRUE);
-    mPreview->setVisible(show ? TRUE : FALSE);
+    mDummy->setVisible(show);
+    mPreview->setVisible(show);
 }
 
 void LLFloaterEmojiPicker::onGroupButtonClick(LLUICtrl* ctrl)
@@ -823,7 +823,7 @@ void LLFloaterEmojiPicker::onGroupButtonMouseEnter(LLUICtrl* ctrl)
 {
     if (LLButton* button = dynamic_cast<LLButton*>(ctrl))
     {
-        button->setUseFontColor(TRUE);
+        button->setUseFontColor(true);
     }
 }
 
@@ -897,7 +897,7 @@ void LLFloaterEmojiPicker::onEmojiMouseUp(LLUICtrl* ctrl)
 
         onCommit();
 
-        if (!mHint.empty() || !(gKeyboard->currentMask(TRUE) & MASK_SHIFT))
+        if (!mHint.empty() || !(gKeyboard->currentMask(true) & MASK_SHIFT))
         {
             hideFloater();
         }
@@ -941,15 +941,15 @@ bool LLFloaterEmojiPicker::moveFocusedIconUp()
 
 bool LLFloaterEmojiPicker::moveFocusedIconDown()
 {
-    S32 rowCount = mEmojiGrid->getPanelList().size();
-    for (S32 i = mFocusedIconRow + 1; i < rowCount; ++i)
+    auto rowCount = mEmojiGrid->getPanelList().size();
+    for (size_t i = mFocusedIconRow + 1; i < rowCount; ++i)
     {
         LLScrollingPanel* panel = mEmojiGrid->getPanelList()[i];
         LLEmojiGridRow* row = dynamic_cast<LLEmojiGridRow*>(panel);
         if (row && row->mList->getPanelList().size() > mFocusedIconCol)
         {
             mEmojiScroll->scrollToShowRect(row->getBoundingRect());
-            mFocusedIconRow = i;
+            mFocusedIconRow = static_cast<S32>(i);
             selectFocusedIcon();
             return true;
         }
@@ -977,7 +977,7 @@ bool LLFloaterEmojiPicker::moveFocusedIconPrev()
         if (row && row->mList->getPanelList().size())
         {
             mEmojiScroll->scrollToShowRect(row->getBoundingRect());
-            mFocusedIconCol = row->mList->getPanelList().size() - 1;
+            mFocusedIconCol = static_cast<S32>(row->mList->getPanelList().size()) - 1;
             mFocusedIconRow = i;
             selectFocusedIcon();
             return true;
@@ -994,7 +994,7 @@ bool LLFloaterEmojiPicker::moveFocusedIconNext()
 
     LLScrollingPanel* panel = mEmojiGrid->getPanelList()[mFocusedIconRow];
     LLEmojiGridRow* row = dynamic_cast<LLEmojiGridRow*>(panel);
-    S32 colCount = row ? row->mList->getPanelList().size() : 0;
+    S32 colCount = row ? static_cast<S32>(row->mList->getPanelList().size()) : 0;
     if (mFocusedIconCol < colCount - 1)
     {
         mFocusedIconCol++;
@@ -1002,8 +1002,8 @@ bool LLFloaterEmojiPicker::moveFocusedIconNext()
         return true;
     }
 
-    S32 rowCount = mEmojiGrid->getPanelList().size();
-    for (S32 i = mFocusedIconRow + 1; i < rowCount; ++i)
+    auto rowCount = mEmojiGrid->getPanelList().size();
+    for (size_t i = mFocusedIconRow + 1; i < rowCount; ++i)
     {
         LLScrollingPanel* panel = mEmojiGrid->getPanelList()[i];
         LLEmojiGridRow* row = dynamic_cast<LLEmojiGridRow*>(panel);
@@ -1011,7 +1011,7 @@ bool LLFloaterEmojiPicker::moveFocusedIconNext()
         {
             mEmojiScroll->scrollToShowRect(row->getBoundingRect());
             mFocusedIconCol = 0;
-            mFocusedIconRow = i;
+            mFocusedIconRow = static_cast<S32>(i);
             selectFocusedIcon();
             return true;
         }
@@ -1022,18 +1022,18 @@ bool LLFloaterEmojiPicker::moveFocusedIconNext()
 
 void LLFloaterEmojiPicker::selectGridIcon(LLEmojiGridIcon* icon)
 {
-    icon->setBackgroundVisible(TRUE);
+    icon->setBackgroundVisible(true);
     mPreview->setIcon(icon);
 }
 
 void LLFloaterEmojiPicker::unselectGridIcon(LLEmojiGridIcon* icon)
 {
-    icon->setBackgroundVisible(FALSE);
+    icon->setBackgroundVisible(false);
     mPreview->setIcon(nullptr);
 }
 
 // virtual
-BOOL LLFloaterEmojiPicker::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLFloaterEmojiPicker::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
     if (mask == MASK_NONE)
     {
@@ -1041,19 +1041,19 @@ BOOL LLFloaterEmojiPicker::handleKey(KEY key, MASK mask, BOOL called_from_parent
         {
         case KEY_UP:
             moveFocusedIconUp();
-            return TRUE;
+            return true;
         case KEY_DOWN:
             moveFocusedIconDown();
-            return TRUE;
+            return true;
         case KEY_LEFT:
             moveFocusedIconPrev();
-            return TRUE;
+            return true;
         case KEY_RIGHT:
             moveFocusedIconNext();
-            return TRUE;
+            return true;
         case KEY_ESCAPE:
             hideFloater();
-            return TRUE;
+            return true;
         }
     }
 
@@ -1062,11 +1062,11 @@ BOOL LLFloaterEmojiPicker::handleKey(KEY key, MASK mask, BOOL called_from_parent
         switch (key)
         {
         case KEY_LEFT:
-            selectEmojiGroup((mSelectedGroupIndex + mFilteredEmojis.size()) % mGroupButtons.size());
-            return TRUE;
+            selectEmojiGroup(static_cast<U32>((mSelectedGroupIndex + mFilteredEmojis.size()) % mGroupButtons.size()));
+            return true;
         case KEY_RIGHT:
-            selectEmojiGroup((mSelectedGroupIndex + 1) % mGroupButtons.size());
-            return TRUE;
+            selectEmojiGroup(static_cast<U32>((mSelectedGroupIndex + 1) % mGroupButtons.size()));
+            return true;
         }
     }
 
@@ -1080,7 +1080,7 @@ BOOL LLFloaterEmojiPicker::handleKey(KEY key, MASK mask, BOOL called_from_parent
             onEmojiMouseUp(mFocusedIcon);
         }
         mRecentReturnPressedMs = time;
-        return TRUE;
+        return true;
     }
 
     if (mHint.empty())
@@ -1096,7 +1096,7 @@ BOOL LLFloaterEmojiPicker::handleKey(KEY key, MASK mask, BOOL called_from_parent
                 mFilterPattern += (char)key;
                 initialize();
             }
-            return TRUE;
+            return true;
         }
         else if (key == KEY_BACKSPACE)
         {
@@ -1109,7 +1109,7 @@ BOOL LLFloaterEmojiPicker::handleKey(KEY key, MASK mask, BOOL called_from_parent
                 }
                 initialize();
             }
-            return TRUE;
+            return true;
         }
     }
 
diff --git a/indra/newview/llfloateremojipicker.h b/indra/newview/llfloateremojipicker.h
index bc64cb1f35..b807adb67d 100644
--- a/indra/newview/llfloateremojipicker.h
+++ b/indra/newview/llfloateremojipicker.h
@@ -45,7 +45,7 @@ public:
 
     LLFloaterEmojiPicker(const LLSD& key);
 
-    virtual BOOL postBuild() override;
+    virtual bool postBuild() override;
     virtual void dirtyRect() override;
     virtual void goneFromFront() override;
 
@@ -94,7 +94,7 @@ private:
 
     void onOpen(const LLSD& key) override;
     void onClose(bool app_quitting) override;
-    virtual BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent) override;
+    virtual bool handleKey(KEY key, MASK mask, bool called_from_parent) override;
 
     class LLPanel* mGroups { nullptr };
     class LLPanel* mBadge { nullptr };
diff --git a/indra/newview/llfloaterenvironmentadjust.cpp b/indra/newview/llfloaterenvironmentadjust.cpp
index 242655b0b6..32c4f6205d 100644
--- a/indra/newview/llfloaterenvironmentadjust.cpp
+++ b/indra/newview/llfloaterenvironmentadjust.cpp
@@ -84,7 +84,7 @@ LLFloaterEnvironmentAdjust::~LLFloaterEnvironmentAdjust()
 {}
 
 //-------------------------------------------------------------------------
-BOOL LLFloaterEnvironmentAdjust::postBuild()
+bool LLFloaterEnvironmentAdjust::postBuild()
 {
     getChild<LLUICtrl>(FIELD_SKY_AMBIENT_LIGHT)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onAmbientLightChanged(); });
     getChild<LLUICtrl>(FIELD_SKY_BLUE_HORIZON)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onBlueHorizonChanged(); });
@@ -113,7 +113,7 @@ BOOL LLFloaterEnvironmentAdjust::postBuild()
 
     getChild<LLTextureCtrl>(FIELD_SKY_CLOUD_MAP)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onCloudMapChanged(); });
     getChild<LLTextureCtrl>(FIELD_SKY_CLOUD_MAP)->setDefaultImageAssetID(LLSettingsSky::GetDefaultCloudNoiseTextureId());
-    getChild<LLTextureCtrl>(FIELD_SKY_CLOUD_MAP)->setAllowNoTexture(TRUE);
+    getChild<LLTextureCtrl>(FIELD_SKY_CLOUD_MAP)->setAllowNoTexture(true);
 
     getChild<LLTextureCtrl>(FIELD_WATER_NORMAL_MAP)->setDefaultImageAssetID(LLSettingsWater::GetDefaultWaterNormalAssetId());
     getChild<LLTextureCtrl>(FIELD_WATER_NORMAL_MAP)->setBlankImageAssetID(BLANK_OBJECT_NORMAL);
@@ -122,7 +122,7 @@ BOOL LLFloaterEnvironmentAdjust::postBuild()
     getChild<LLUICtrl>(FIELD_REFLECTION_PROBE_AMBIANCE)->setCommitCallback([this](LLUICtrl*, const LLSD&) { onReflectionProbeAmbianceChanged(); });
 
     refresh();
-    return TRUE;
+    return true;
 }
 
 void LLFloaterEnvironmentAdjust::onOpen(const LLSD& key)
@@ -157,12 +157,12 @@ void LLFloaterEnvironmentAdjust::refresh()
 {
     if (!mLiveSky || !mLiveWater)
     {
-        setAllChildrenEnabled(FALSE);
+        setAllChildrenEnabled(false);
         return;
     }
 
-    setEnabled(TRUE);
-    setAllChildrenEnabled(TRUE);
+    setEnabled(true);
+    setAllChildrenEnabled(true);
 
     getChild<LLColorSwatchCtrl>(FIELD_SKY_AMBIENT_LIGHT)->set(mLiveSky->getAmbientColor() / SLIDER_SCALE_SUN_AMBIENT);
     getChild<LLColorSwatchCtrl>(FIELD_SKY_BLUE_HORIZON)->set(mLiveSky->getBlueHorizon() / SLIDER_SCALE_BLUE_HORIZON_DENSITY);
diff --git a/indra/newview/llfloaterenvironmentadjust.h b/indra/newview/llfloaterenvironmentadjust.h
index 20ab2138b0..c894473582 100644
--- a/indra/newview/llfloaterenvironmentadjust.h
+++ b/indra/newview/llfloaterenvironmentadjust.h
@@ -49,7 +49,7 @@ public:
     virtual                     ~LLFloaterEnvironmentAdjust();
 
 
-    virtual BOOL                postBuild() override;
+    virtual bool                postBuild() override;
     virtual void                onOpen(const LLSD& key) override;
     virtual void                onClose(bool app_quitting) override;
 
diff --git a/indra/newview/llfloaterevent.cpp b/indra/newview/llfloaterevent.cpp
index b07f2963b2..85d3b27f22 100644
--- a/indra/newview/llfloaterevent.cpp
+++ b/indra/newview/llfloaterevent.cpp
@@ -71,7 +71,7 @@ LLFloaterEvent::~LLFloaterEvent()
 }
 
 
-BOOL LLFloaterEvent::postBuild()
+bool LLFloaterEvent::postBuild()
 {
     mBrowser = getChild<LLMediaCtrl>("browser");
     if (mBrowser)
@@ -79,7 +79,7 @@ BOOL LLFloaterEvent::postBuild()
         mBrowser->addObserver(this);
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterEvent::handleMediaEvent(LLPluginClassMedia *self, EMediaEvent event)
diff --git a/indra/newview/llfloaterevent.h b/indra/newview/llfloaterevent.h
index 071b907cd9..3854885a5f 100644
--- a/indra/newview/llfloaterevent.h
+++ b/indra/newview/llfloaterevent.h
@@ -42,7 +42,7 @@ public:
     LLFloaterEvent(const LLSD& key);
     /*virtual*/ ~LLFloaterEvent();
 
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
 
     void setEventID(const U32 event_id);
 
@@ -51,7 +51,7 @@ public:
 
 
 protected:
-    /*virtual*/ void handleMediaEvent(LLPluginClassMedia *self, EMediaEvent event);
+    void handleMediaEvent(LLPluginClassMedia *self, EMediaEvent event) override;
 
     U32             mEventID;
 
diff --git a/indra/newview/llfloaterexperiencepicker.cpp b/indra/newview/llfloaterexperiencepicker.cpp
index 93eaa6b64b..721ffd30a0 100644
--- a/indra/newview/llfloaterexperiencepicker.cpp
+++ b/indra/newview/llfloaterexperiencepicker.cpp
@@ -44,7 +44,7 @@
 #include "lldraghandle.h"
 #include "llpanelexperiencepicker.h"
 
-LLFloaterExperiencePicker* LLFloaterExperiencePicker::show( select_callback_t callback, const LLUUID& key, BOOL allow_multiple, BOOL close_on_select, filter_list filters, LLView * frustumOrigin )
+LLFloaterExperiencePicker* LLFloaterExperiencePicker::show( select_callback_t callback, const LLUUID& key, bool allow_multiple, bool close_on_select, filter_list filters, LLView * frustumOrigin )
 {
     LLFloaterExperiencePicker* floater =
         LLFloaterReg::showTypedInstance<LLFloaterExperiencePicker>("experience_search", key);
@@ -99,7 +99,7 @@ LLFloaterExperiencePicker::~LLFloaterExperiencePicker()
     gFocusMgr.releaseFocusIfNeeded( this );
 }
 
-BOOL LLFloaterExperiencePicker::postBuild()
+bool LLFloaterExperiencePicker::postBuild()
 {
     mSearchPanel = new LLPanelExperiencePicker();
     addChild(mSearchPanel);
diff --git a/indra/newview/llfloaterexperiencepicker.h b/indra/newview/llfloaterexperiencepicker.h
index 49f96dfea0..0a001478f1 100644
--- a/indra/newview/llfloaterexperiencepicker.h
+++ b/indra/newview/llfloaterexperiencepicker.h
@@ -43,14 +43,14 @@ public:
     typedef boost::function<bool (const LLSD&)> filter_function;
     typedef std::vector<filter_function> filter_list;
 
-    static LLFloaterExperiencePicker* show( select_callback_t callback, const LLUUID& key, BOOL allow_multiple, BOOL close_on_select, filter_list filters, LLView * frustumOrigin);
+    static LLFloaterExperiencePicker* show( select_callback_t callback, const LLUUID& key, bool allow_multiple, bool close_on_select, filter_list filters, LLView * frustumOrigin);
 
     LLFloaterExperiencePicker(const LLSD& key);
     virtual ~LLFloaterExperiencePicker();
 
-    BOOL postBuild();
+    bool postBuild() override;
 
-    virtual void    draw();
+    void draw() override;
 private:
 
     LLPanelExperiencePicker* mSearchPanel;
diff --git a/indra/newview/llfloaterexperienceprofile.cpp b/indra/newview/llfloaterexperienceprofile.cpp
index 0966eaa1bf..eb4976fc9e 100644
--- a/indra/newview/llfloaterexperienceprofile.cpp
+++ b/indra/newview/llfloaterexperienceprofile.cpp
@@ -140,7 +140,7 @@ LLFloaterExperienceProfile::~LLFloaterExperienceProfile()
 
 }
 
-BOOL LLFloaterExperienceProfile::postBuild()
+bool LLFloaterExperienceProfile::postBuild()
 {
 
     if (mExperienceId.notNull())
@@ -178,7 +178,7 @@ BOOL LLFloaterExperienceProfile::postBuild()
 
     childSetCommitCallback(EDIT IMG_LOGO, boost::bind(&LLFloaterExperienceProfile::onFieldChanged, this), NULL);
 
-    getChild<LLTextEditor>(EDIT TF_DESC)->setCommitOnFocusLost(TRUE);
+    getChild<LLTextEditor>(EDIT TF_DESC)->setCommitOnFocusLost(true);
 
 
     LLEventPumps::instance().obtain("experience_permission").listen(mExperienceId.asString()+"-profile",
@@ -190,7 +190,7 @@ BOOL LLFloaterExperienceProfile::postBuild()
         changeToEdit();
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterExperienceProfile::experienceCallback(LLHandle<LLFloaterExperienceProfile> handle,  const LLSD& experience )
@@ -314,11 +314,11 @@ void LLFloaterExperienceProfile::refreshExperience( const LLSD& experience )
     LLLayoutPanel* topPanel = getChild<LLLayoutPanel>(PNL_TOP);
 
 
-    imagePanel->setVisible(FALSE);
-    descriptionPanel->setVisible(FALSE);
-    locationPanel->setVisible(FALSE);
-    marketplacePanel->setVisible(FALSE);
-    topPanel->setVisible(FALSE);
+    imagePanel->setVisible(false);
+    descriptionPanel->setVisible(false);
+    locationPanel->setVisible(false);
+    marketplacePanel->setVisible(false);
+    topPanel->setVisible(false);
 
 
     LLTextBox* child = getChild<LLTextBox>(TF_NAME);
@@ -380,9 +380,9 @@ void LLFloaterExperienceProfile::refreshExperience( const LLSD& experience )
     enable = getChild<LLCheckBoxCtrl>(EDIT BTN_PRIVATE);
     enable->set(properties & LLExperienceCache::PROPERTY_PRIVATE);
 
-    topPanel->setVisible(TRUE);
+    topPanel->setVisible(true);
     child=getChild<LLTextBox>(TF_GRID_WIDE);
-    child->setVisible(TRUE);
+    child->setVisible(true);
 
     if(properties & LLExperienceCache::PROPERTY_GRID)
     {
@@ -395,13 +395,13 @@ void LLFloaterExperienceProfile::refreshExperience( const LLSD& experience )
 
     if(getChild<LLButton>(BTN_EDIT)->getVisible())
     {
-        topPanel->setVisible(TRUE);
+        topPanel->setVisible(true);
     }
 
     if(properties & LLExperienceCache::PROPERTY_PRIVILEGED)
     {
         child = getChild<LLTextBox>(TF_PRIVILEGED);
-        child->setVisible(TRUE);
+        child->setVisible(true);
     }
     else
     {
@@ -433,16 +433,16 @@ void LLFloaterExperienceProfile::refreshExperience( const LLSD& experience )
             child->setText(value);
             if(value.size())
             {
-                marketplacePanel->setVisible(TRUE);
+                marketplacePanel->setVisible(true);
             }
             else
             {
-                marketplacePanel->setVisible(FALSE);
+                marketplacePanel->setVisible(false);
             }
         }
         else
         {
-            marketplacePanel->setVisible(FALSE);
+            marketplacePanel->setVisible(false);
         }
 
         linechild = getChild<LLLineEditor>(EDIT TF_MRKT);
@@ -454,7 +454,7 @@ void LLFloaterExperienceProfile::refreshExperience( const LLSD& experience )
 
             LLUUID id = data[IMG_LOGO].asUUID();
             logo->setImageAssetID(id);
-            imagePanel->setVisible(TRUE);
+            imagePanel->setVisible(true);
 
             logo = getChild<LLTextureCtrl>(EDIT IMG_LOGO);
             logo->setImageAssetID(data[IMG_LOGO].asUUID());
@@ -464,8 +464,8 @@ void LLFloaterExperienceProfile::refreshExperience( const LLSD& experience )
     }
     else
     {
-        marketplacePanel->setVisible(FALSE);
-        imagePanel->setVisible(FALSE);
+        marketplacePanel->setVisible(false);
+        imagePanel->setVisible(false);
     }
 
     mDirty=false;
@@ -533,17 +533,17 @@ void LLFloaterExperienceProfile::onFieldChanged()
 }
 
 
-BOOL LLFloaterExperienceProfile::canClose()
+bool LLFloaterExperienceProfile::canClose()
 {
     if(mForceClose || !mDirty)
     {
-        return TRUE;
+        return true;
     }
     else
     {
         // Bring up view-modal dialog: Save changes? Yes, No, Cancel
         LLNotificationsUtil::add("SaveChanges", LLSD(), LLSD(), boost::bind(&LLFloaterExperienceProfile::handleSaveChangesDialog, this, _1, _2, CLOSE));
-        return FALSE;
+        return false;
     }
 }
 
@@ -560,7 +560,7 @@ bool LLFloaterExperienceProfile::handleSaveChangesDialog( const LLSD& notificati
     case 1:  // "No"
         if(action != NOTHING)
         {
-            mForceClose = TRUE;
+            mForceClose = true;
             if(action==CLOSE)
             {
                 closeFloater();
@@ -738,37 +738,37 @@ void LLFloaterExperienceProfile::updatePermission( const LLSD& permission )
 void LLFloaterExperienceProfile::experienceAllowed()
 {
     LLButton* button=getChild<LLButton>(BTN_ALLOW);
-    button->setEnabled(FALSE);
+    button->setEnabled(false);
 
     button=getChild<LLButton>(BTN_FORGET);
-    button->setEnabled(TRUE);
+    button->setEnabled(true);
 
     button=getChild<LLButton>(BTN_BLOCK);
-    button->setEnabled(TRUE);
+    button->setEnabled(true);
 }
 
 void LLFloaterExperienceProfile::experienceForgotten()
 {
     LLButton* button=getChild<LLButton>(BTN_ALLOW);
-    button->setEnabled(TRUE);
+    button->setEnabled(true);
 
     button=getChild<LLButton>(BTN_FORGET);
-    button->setEnabled(FALSE);
+    button->setEnabled(false);
 
     button=getChild<LLButton>(BTN_BLOCK);
-    button->setEnabled(TRUE);
+    button->setEnabled(true);
 }
 
 void LLFloaterExperienceProfile::experienceBlocked()
 {
     LLButton* button=getChild<LLButton>(BTN_ALLOW);
-    button->setEnabled(TRUE);
+    button->setEnabled(true);
 
     button=getChild<LLButton>(BTN_FORGET);
-    button->setEnabled(TRUE);
+    button->setEnabled(true);
 
     button=getChild<LLButton>(BTN_BLOCK);
-    button->setEnabled(FALSE);
+    button->setEnabled(false);
 }
 
 void LLFloaterExperienceProfile::onClose( bool app_quitting )
@@ -918,8 +918,8 @@ void LLFloaterExperienceProfile::experienceIsAdmin(LLHandle<LLFloaterExperienceP
     }
     if (enabled && result["status"].asBoolean())
     {
-        parent->getChild<LLLayoutPanel>(PNL_TOP)->setVisible(TRUE);
-        parent->getChild<LLButton>(BTN_EDIT)->setVisible(TRUE);
+        parent->getChild<LLLayoutPanel>(PNL_TOP)->setVisible(true);
+        parent->getChild<LLButton>(BTN_EDIT)->setVisible(true);
     }
 }
 
diff --git a/indra/newview/llfloaterexperienceprofile.h b/indra/newview/llfloaterexperienceprofile.h
index 16bda14cbf..d23a2be3ce 100644
--- a/indra/newview/llfloaterexperienceprofile.h
+++ b/indra/newview/llfloaterexperienceprofile.h
@@ -60,7 +60,7 @@ public:
 
     void refreshExperience(const LLSD& experience);
     void onSaveComplete( const LLSD& content );
-    virtual BOOL canClose();
+    virtual bool canClose();
 
     virtual void onClose(bool app_quitting);
 protected:
@@ -87,7 +87,7 @@ protected:
     static void experienceCallback(LLHandle<LLFloaterExperienceProfile> handle, const LLSD& experience);
     static bool experiencePermission(LLHandle<LLFloaterExperienceProfile> handle, const LLSD& permission);
 
-    BOOL postBuild();
+    bool postBuild();
     bool setMaturityString(U8 maturity, LLTextBox* child, LLComboBox* combo);
     bool handleSaveChangesDialog(const LLSD& notification, const LLSD& response, PostSaveAction action);
     void doSave( int success_action );
diff --git a/indra/newview/llfloaterexperiences.cpp b/indra/newview/llfloaterexperiences.cpp
index 8fc1d88cc9..e79055fdae 100644
--- a/indra/newview/llfloaterexperiences.cpp
+++ b/indra/newview/llfloaterexperiences.cpp
@@ -58,7 +58,7 @@ LLPanelExperiences* LLFloaterExperiences::addTab(const std::string& name, bool s
     return newPanel;
 }
 
-BOOL LLFloaterExperiences::postBuild()
+bool LLFloaterExperiences::postBuild()
 {
     getChild<LLTabContainer>("xp_tabs")->addTabPanel(new LLPanelExperiencePicker());
     addTab("Allowed_Experiences_Tab", true);
@@ -74,7 +74,7 @@ BOOL LLFloaterExperiences::postBuild()
     getChild<LLTabContainer>("xp_tabs")->addTabPanel(new LLPanelExperienceLog());
     resizeToTabs();
 
-    return TRUE;
+    return true;
 }
 
 
@@ -129,7 +129,7 @@ void LLFloaterExperiences::resizeToTabs()
     {
         rect.mRight = rect.mLeft + tabs->getTotalTabWidth() + TAB_WIDTH_PADDING;
     }
-    reshape(rect.getWidth(), rect.getHeight(), FALSE);
+    reshape(rect.getWidth(), rect.getHeight(), false);
 }
 
 void LLFloaterExperiences::refreshContents()
diff --git a/indra/newview/llfloaterexperiences.h b/indra/newview/llfloaterexperiences.h
index 6fb77c5935..5e657767d2 100644
--- a/indra/newview/llfloaterexperiences.h
+++ b/indra/newview/llfloaterexperiences.h
@@ -47,7 +47,7 @@ protected:
 
     void clearFromRecent(const LLSD& ids);
     void resizeToTabs();
-    /*virtual*/ BOOL    postBuild();
+    /*virtual*/ bool    postBuild();
     void refreshContents();
     void setupRecentTabs();
     LLPanelExperiences* addTab(const std::string& name, bool select);
diff --git a/indra/newview/llfloaterfixedenvironment.cpp b/indra/newview/llfloaterfixedenvironment.cpp
index ad9f83701c..6829e6b479 100644
--- a/indra/newview/llfloaterfixedenvironment.cpp
+++ b/indra/newview/llfloaterfixedenvironment.cpp
@@ -94,12 +94,12 @@ LLFloaterFixedEnvironment::~LLFloaterFixedEnvironment()
     delete mFlyoutControl;
 }
 
-BOOL LLFloaterFixedEnvironment::postBuild()
+bool LLFloaterFixedEnvironment::postBuild()
 {
     mTab = getChild<LLTabContainer>(CONTROL_TAB_AREA);
     mTxtName = getChild<LLLineEditor>(FIELD_SETTINGS_NAME);
 
-    mTxtName->setCommitOnFocusLost(TRUE);
+    mTxtName->setCommitOnFocusLost(true);
     mTxtName->setCommitCallback([this](LLUICtrl *, const LLSD &) { onNameChanged(mTxtName->getValue().asString()); });
 
     getChild<LLButton>(BUTTON_NAME_IMPORT)->setClickedCallback([this](LLUICtrl *, const LLSD &) { onButtonImport(); });
@@ -110,7 +110,7 @@ BOOL LLFloaterFixedEnvironment::postBuild()
     mFlyoutControl->setAction([this](LLUICtrl *ctrl, const LLSD &data) { onButtonApply(ctrl, data); });
     mFlyoutControl->setMenuItemVisible(ACTION_COMMIT, false);
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterFixedEnvironment::onOpen(const LLSD& key)
@@ -367,7 +367,7 @@ void LLFloaterFixedEnvironment::onInventoryCreated(LLUUID asset_id, LLUUID inven
         }
     }
     clearDirtyFlag();
-    setFocus(TRUE);                 // Call back the focus...
+    setFocus(true);                 // Call back the focus...
     loadInventoryItem(inventory_id, can_trans);
 }
 
@@ -404,7 +404,7 @@ void LLFloaterFixedEnvironment::doSelectFromInventory()
 
     picker->setSettingsFilter(mSettings->getSettingsTypeValue());
     picker->openFloater();
-    picker->setFocus(TRUE);
+    picker->setFocus(true);
 }
 
 //=========================================================================
@@ -412,10 +412,10 @@ LLFloaterFixedEnvironmentWater::LLFloaterFixedEnvironmentWater(const LLSD &key):
     LLFloaterFixedEnvironment(key)
 {}
 
-BOOL LLFloaterFixedEnvironmentWater::postBuild()
+bool LLFloaterFixedEnvironmentWater::postBuild()
 {
     if (!LLFloaterFixedEnvironment::postBuild())
-        return FALSE;
+        return false;
 
     LLPanelSettingsWater * panel;
     panel = new LLPanelSettingsWaterMainTab;
@@ -424,7 +424,7 @@ BOOL LLFloaterFixedEnvironmentWater::postBuild()
     panel->setOnDirtyFlagChanged( [this] (LLPanel *, bool value) { onPanelDirtyFlagChanged(value); });
     mTab->addTabPanel(LLTabContainer::TabPanelParams().panel(panel).select_tab(true));
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterFixedEnvironmentWater::updateEditEnvironment(void)
@@ -479,10 +479,10 @@ LLFloaterFixedEnvironmentSky::LLFloaterFixedEnvironmentSky(const LLSD &key) :
     LLFloaterFixedEnvironment(key)
 {}
 
-BOOL LLFloaterFixedEnvironmentSky::postBuild()
+bool LLFloaterFixedEnvironmentSky::postBuild()
 {
     if (!LLFloaterFixedEnvironment::postBuild())
-        return FALSE;
+        return false;
 
     LLPanelSettingsSky * panel;
     panel = new LLPanelSettingsSkyAtmosTab;
@@ -503,7 +503,7 @@ BOOL LLFloaterFixedEnvironmentSky::postBuild()
     panel->setOnDirtyFlagChanged([this](LLPanel *, bool value) { onPanelDirtyFlagChanged(value); });
     mTab->addTabPanel(LLTabContainer::TabPanelParams().panel(panel).select_tab(false));
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterFixedEnvironmentSky::updateEditEnvironment(void)
diff --git a/indra/newview/llfloaterfixedenvironment.h b/indra/newview/llfloaterfixedenvironment.h
index c616cc64bf..ac6acdd568 100644
--- a/indra/newview/llfloaterfixedenvironment.h
+++ b/indra/newview/llfloaterfixedenvironment.h
@@ -50,7 +50,7 @@ public:
                             LLFloaterFixedEnvironment(const LLSD &key);
                             ~LLFloaterFixedEnvironment();
 
-    virtual BOOL            postBuild()                 override;
+    virtual bool            postBuild()                 override;
     virtual void            onOpen(const LLSD& key)     override;
     virtual void            onClose(bool app_quitting)  override;
 
@@ -101,7 +101,7 @@ class LLFloaterFixedEnvironmentWater : public LLFloaterFixedEnvironment
 public:
     LLFloaterFixedEnvironmentWater(const LLSD &key);
 
-    BOOL                    postBuild()                 override;
+    bool                    postBuild()                 override;
 
     virtual void            onOpen(const LLSD& key)     override;
 
@@ -121,7 +121,7 @@ class LLFloaterFixedEnvironmentSky : public LLFloaterFixedEnvironment
 public:
     LLFloaterFixedEnvironmentSky(const LLSD &key);
 
-    BOOL                    postBuild()                 override;
+    bool                    postBuild()                 override;
 
     virtual void            onOpen(const LLSD& key)     override;
     virtual void            onClose(bool app_quitting)  override;
diff --git a/indra/newview/llfloaterforgetuser.cpp b/indra/newview/llfloaterforgetuser.cpp
index 13787c4435..874bb7d545 100644
--- a/indra/newview/llfloaterforgetuser.cpp
+++ b/indra/newview/llfloaterforgetuser.cpp
@@ -56,7 +56,7 @@ LLFloaterForgetUser::~LLFloaterForgetUser()
     }
 }
 
-BOOL LLFloaterForgetUser::postBuild()
+bool LLFloaterForgetUser::postBuild()
 {
     mScrollList = getChild<LLScrollListCtrl>("user_list");
 
@@ -120,12 +120,12 @@ BOOL LLFloaterForgetUser::postBuild()
     bool enable_button = mScrollList->getFirstSelectedIndex() != -1;
     LLCheckBoxCtrl *chk_box = getChild<LLCheckBoxCtrl>("delete_data");
     chk_box->setEnabled(enable_button);
-    chk_box->set(FALSE);
+    chk_box->set(false);
     LLButton *button = getChild<LLButton>("forget");
     button->setEnabled(enable_button);
     button->setCommitCallback(boost::bind(&LLFloaterForgetUser::onForgetClicked, this));
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterForgetUser::onForgetClicked()
@@ -135,7 +135,7 @@ void LLFloaterForgetUser::onForgetClicked()
     const std::string user_id = user_data["user_id"];
 
     LLCheckBoxCtrl *chk_box = getChild<LLCheckBoxCtrl>("delete_data");
-    BOOL delete_data = chk_box->getValue();
+    bool delete_data = chk_box->getValue();
 
     if (delete_data && mUserGridsCount[user_id] > 1)
     {
@@ -192,7 +192,7 @@ void LLFloaterForgetUser::processForgetUser()
 {
     LLScrollListCtrl *scroll_list = getChild<LLScrollListCtrl>("user_list");
     LLCheckBoxCtrl *chk_box = getChild<LLCheckBoxCtrl>("delete_data");
-    BOOL delete_data = chk_box->getValue();
+    bool delete_data = chk_box->getValue();
     LLSD user_data = scroll_list->getSelectedValue();
     const std::string user_id = user_data["user_id"];
     const std::string grid = user_data["grid"];
diff --git a/indra/newview/llfloaterforgetuser.h b/indra/newview/llfloaterforgetuser.h
index 039b24c783..99a724b648 100644
--- a/indra/newview/llfloaterforgetuser.h
+++ b/indra/newview/llfloaterforgetuser.h
@@ -37,7 +37,7 @@ public:
     LLFloaterForgetUser(const LLSD &key);
     ~LLFloaterForgetUser();
 
-    BOOL postBuild();
+    bool postBuild() override;
     void onForgetClicked();
 
 private:
diff --git a/indra/newview/llfloatergesture.cpp b/indra/newview/llfloatergesture.cpp
index 3b2132d4b1..936096d8fe 100644
--- a/indra/newview/llfloatergesture.cpp
+++ b/indra/newview/llfloatergesture.cpp
@@ -51,7 +51,7 @@
 #include "llviewercontrol.h"
 #include "llfloaterperms.h"
 
-BOOL item_name_precedes( LLInventoryItem* a, LLInventoryItem* b )
+bool item_name_precedes( LLInventoryItem* a, LLInventoryItem* b )
 {
     return LLStringUtil::precedesDict( a->getName(), b->getName() );
 }
@@ -85,7 +85,7 @@ public:
             perm.setMaskEveryone(LLFloaterPerms::getEveryonePerms("Gestures"));
             perm.setMaskGroup(LLFloaterPerms::getGroupPerms("Gestures"));
             item->setPermissions(perm);
-            item->updateServer(FALSE);
+            item->updateServer(false);
         }
     }
 };
@@ -188,7 +188,7 @@ LLFloaterGesture::~LLFloaterGesture()
 }
 
 // virtual
-BOOL LLFloaterGesture::postBuild()
+bool LLFloaterGesture::postBuild()
 {
     std::string label;
 
@@ -224,9 +224,9 @@ BOOL LLFloaterGesture::postBuild()
     {
         buildGestureList();
 
-        mGestureList->setFocus(TRUE);
+        mGestureList->setFocus(true);
 
-        const BOOL ascending = TRUE;
+        constexpr bool ascending = true;
         mGestureList->sortByColumn(std::string("name"), ascending);
         mGestureList->selectFirstItem();
     }
@@ -234,7 +234,7 @@ BOOL LLFloaterGesture::postBuild()
     // Update button labels
     onCommitList();
 
-    return TRUE;
+    return true;
 }
 
 
@@ -457,8 +457,8 @@ void LLFloaterGesture::onClickPlay()
     if(!LLGestureMgr::instance().isGestureActive(item_id))
     {
         // we need to inform server about gesture activating to be consistent with LLPreviewGesture and  LLGestureComboList.
-        BOOL inform_server = TRUE;
-        BOOL deactivate_similar = FALSE;
+        bool inform_server = true;
+        bool deactivate_similar = false;
         LLGestureMgr::instance().setGestureLoadedCallback(item_id, boost::bind(&LLFloaterGesture::playGesture, this, item_id));
         LLViewerInventoryItem *item = gInventory.getItem(item_id);
         llassert(item);
@@ -499,13 +499,13 @@ void LLFloaterGesture::onActivateBtnClick()
 
     LLGestureMgr* gm = LLGestureMgr::getInstance();
     uuid_vec_t::const_iterator it = ids.begin();
-    BOOL first_gesture_state = gm->isGestureActive(*it);
-    BOOL is_mixed = FALSE;
+    bool first_gesture_state = gm->isGestureActive(*it);
+    bool is_mixed = false;
     while( ++it != ids.end() )
     {
         if(first_gesture_state != gm->isGestureActive(*it))
         {
-            is_mixed = TRUE;
+            is_mixed = true;
             break;
         }
     }
@@ -678,7 +678,7 @@ void LLFloaterGesture::onDeleteSelected()
             new_item->setParent(trash_id);
             // no need to restamp it though it's a move into trash because
             // it's a brand new item already.
-            new_item->updateParentOnServer(FALSE);
+            new_item->updateParentOnServer(false);
             gInventory.updateItem(new_item);
         }
     }
diff --git a/indra/newview/llfloatergesture.h b/indra/newview/llfloatergesture.h
index ae329da4d1..8116246f31 100644
--- a/indra/newview/llfloatergesture.h
+++ b/indra/newview/llfloatergesture.h
@@ -56,7 +56,7 @@ public:
     LLFloaterGesture(const LLSD& key);
     virtual ~LLFloaterGesture();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     virtual void done ();
     void refreshAll();
     /**
diff --git a/indra/newview/llfloatergodtools.cpp b/indra/newview/llfloatergodtools.cpp
index 3b99139aba..6c1d5b5cca 100644
--- a/indra/newview/llfloatergodtools.cpp
+++ b/indra/newview/llfloatergodtools.cpp
@@ -82,10 +82,10 @@ const F32 SECONDS_BETWEEN_UPDATE_REQUESTS = 5.0f;
 void LLFloaterGodTools::onOpen(const LLSD& key)
 {
     center();
-    setFocus(TRUE);
+    setFocus(true);
 //  LLPanel *panel = getChild<LLTabContainer>("GodTools Tabs")->getCurrentPanel();
 //  if (panel)
-//      panel->setFocus(TRUE);
+//      panel->setFocus(true);
     if (mPanelObjectTools)
         mPanelObjectTools->setTargetAvatar(LLUUID::null);
 
@@ -124,11 +124,11 @@ LLFloaterGodTools::LLFloaterGodTools(const LLSD& key)
     mFactoryMap["request"] = LLCallbackMap(createPanelRequest, this);
 }
 
-BOOL LLFloaterGodTools::postBuild()
+bool LLFloaterGodTools::postBuild()
 {
     sendRegionInfoRequest();
     getChild<LLTabContainer>("GodTools Tabs")->selectTabByName("region");
-    return TRUE;
+    return true;
 }
 // static
 void* LLFloaterGodTools::createPanelGrid(void *userdata)
@@ -200,7 +200,7 @@ void LLFloaterGodTools::showPanel(const std::string& panel_name)
     openFloater();
     LLPanel *panel = getChild<LLTabContainer>("GodTools Tabs")->getCurrentPanel();
     if (panel)
-        panel->setFocus(TRUE);
+        panel->setFocus(true);
 }
 
 // static
@@ -442,22 +442,22 @@ LLPanelRegionTools::LLPanelRegionTools()
     mCommitCallbackRegistrar.add("RegionTools.SaveState",       boost::bind(&LLPanelRegionTools::onSaveState, this));
 }
 
-BOOL LLPanelRegionTools::postBuild()
+bool LLPanelRegionTools::postBuild()
 {
     getChild<LLLineEditor>("region name")->setKeystrokeCallback(onChangeSimName, this);
     getChild<LLLineEditor>("region name")->setPrevalidate(&LLTextValidate::validateASCIIPrintableNoPipe);
     getChild<LLLineEditor>("estate")->setPrevalidate(&LLTextValidate::validatePositiveS32);
     getChild<LLLineEditor>("parentestate")->setPrevalidate(&LLTextValidate::validatePositiveS32);
-    getChildView("parentestate")->setEnabled(FALSE);
+    getChildView("parentestate")->setEnabled(false);
     getChild<LLLineEditor>("gridposx")->setPrevalidate(&LLTextValidate::validatePositiveS32);
-    getChildView("gridposx")->setEnabled(FALSE);
+    getChildView("gridposx")->setEnabled(false);
     getChild<LLLineEditor>("gridposy")->setPrevalidate(&LLTextValidate::validatePositiveS32);
-    getChildView("gridposy")->setEnabled(FALSE);
+    getChildView("gridposy")->setEnabled(false);
 
     getChild<LLLineEditor>("redirectx")->setPrevalidate(&LLTextValidate::validatePositiveS32);
     getChild<LLLineEditor>("redirecty")->setPrevalidate(&LLTextValidate::validatePositiveS32);
 
-    return TRUE;
+    return true;
 }
 
 // Destroys the object
@@ -483,41 +483,41 @@ void LLPanelRegionTools::clearAllWidgets()
 {
     // clear all widgets
     getChild<LLUICtrl>("region name")->setValue("unknown");
-    getChild<LLUICtrl>("region name")->setFocus( FALSE);
+    getChild<LLUICtrl>("region name")->setFocus( false);
 
-    getChild<LLUICtrl>("check prelude")->setValue(FALSE);
-    getChildView("check prelude")->setEnabled(FALSE);
+    getChild<LLUICtrl>("check prelude")->setValue(false);
+    getChildView("check prelude")->setEnabled(false);
 
-    getChild<LLUICtrl>("check fixed sun")->setValue(FALSE);
-    getChildView("check fixed sun")->setEnabled(FALSE);
+    getChild<LLUICtrl>("check fixed sun")->setValue(false);
+    getChildView("check fixed sun")->setEnabled(false);
 
-    getChild<LLUICtrl>("check reset home")->setValue(FALSE);
-    getChildView("check reset home")->setEnabled(FALSE);
+    getChild<LLUICtrl>("check reset home")->setValue(false);
+    getChildView("check reset home")->setEnabled(false);
 
-    getChild<LLUICtrl>("check damage")->setValue(FALSE);
-    getChildView("check damage")->setEnabled(FALSE);
+    getChild<LLUICtrl>("check damage")->setValue(false);
+    getChildView("check damage")->setEnabled(false);
 
-    getChild<LLUICtrl>("check visible")->setValue(FALSE);
-    getChildView("check visible")->setEnabled(FALSE);
+    getChild<LLUICtrl>("check visible")->setValue(false);
+    getChildView("check visible")->setEnabled(false);
 
-    getChild<LLUICtrl>("block terraform")->setValue(FALSE);
-    getChildView("block terraform")->setEnabled(FALSE);
+    getChild<LLUICtrl>("block terraform")->setValue(false);
+    getChildView("block terraform")->setEnabled(false);
 
-    getChild<LLUICtrl>("block dwell")->setValue(FALSE);
-    getChildView("block dwell")->setEnabled(FALSE);
+    getChild<LLUICtrl>("block dwell")->setValue(false);
+    getChildView("block dwell")->setEnabled(false);
 
-    getChild<LLUICtrl>("is sandbox")->setValue(FALSE);
-    getChildView("is sandbox")->setEnabled(FALSE);
+    getChild<LLUICtrl>("is sandbox")->setValue(false);
+    getChildView("is sandbox")->setEnabled(false);
 
     getChild<LLUICtrl>("billable factor")->setValue(BILLABLE_FACTOR_DEFAULT);
-    getChildView("billable factor")->setEnabled(FALSE);
+    getChildView("billable factor")->setEnabled(false);
 
     getChild<LLUICtrl>("land cost")->setValue(PRICE_PER_METER_DEFAULT);
-    getChildView("land cost")->setEnabled(FALSE);
+    getChildView("land cost")->setEnabled(false);
 
-    getChildView("Apply")->setEnabled(FALSE);
-    getChildView("Bake Terrain")->setEnabled(FALSE);
-    getChildView("Autosave now")->setEnabled(FALSE);
+    getChildView("Apply")->setEnabled(false);
+    getChildView("Bake Terrain")->setEnabled(false);
+    getChildView("Autosave now")->setEnabled(false);
 }
 
 
@@ -525,21 +525,21 @@ void LLPanelRegionTools::enableAllWidgets()
 {
     // enable all of the widgets
 
-    getChildView("check prelude")->setEnabled(TRUE);
-    getChildView("check fixed sun")->setEnabled(TRUE);
-    getChildView("check reset home")->setEnabled(TRUE);
-    getChildView("check damage")->setEnabled(TRUE);
-    getChildView("check visible")->setEnabled(FALSE); // use estates to update...
-    getChildView("block terraform")->setEnabled(TRUE);
-    getChildView("block dwell")->setEnabled(TRUE);
-    getChildView("is sandbox")->setEnabled(TRUE);
+    getChildView("check prelude")->setEnabled(true);
+    getChildView("check fixed sun")->setEnabled(true);
+    getChildView("check reset home")->setEnabled(true);
+    getChildView("check damage")->setEnabled(true);
+    getChildView("check visible")->setEnabled(false); // use estates to update...
+    getChildView("block terraform")->setEnabled(true);
+    getChildView("block dwell")->setEnabled(true);
+    getChildView("is sandbox")->setEnabled(true);
 
-    getChildView("billable factor")->setEnabled(TRUE);
-    getChildView("land cost")->setEnabled(TRUE);
+    getChildView("billable factor")->setEnabled(true);
+    getChildView("land cost")->setEnabled(true);
 
-    getChildView("Apply")->setEnabled(FALSE);   // don't enable this one
-    getChildView("Bake Terrain")->setEnabled(TRUE);
-    getChildView("Autosave now")->setEnabled(TRUE);
+    getChildView("Apply")->setEnabled(false);   // don't enable this one
+    getChildView("Bake Terrain")->setEnabled(true);
+    getChildView("Autosave now")->setEnabled(true);
 }
 
 void LLPanelRegionTools::onSaveState(void* userdata)
@@ -718,14 +718,14 @@ void LLPanelRegionTools::setParentEstateID(U32 id)
 
 void LLPanelRegionTools::setCheckFlags(U64 flags)
 {
-    getChild<LLUICtrl>("check prelude")->setValue(is_prelude(flags) ? TRUE : FALSE);
-    getChild<LLUICtrl>("check fixed sun")->setValue(flags & REGION_FLAGS_SUN_FIXED ? TRUE : FALSE);
-    getChild<LLUICtrl>("check reset home")->setValue(flags & REGION_FLAGS_RESET_HOME_ON_TELEPORT ? TRUE : FALSE);
-    getChild<LLUICtrl>("check damage")->setValue(flags & REGION_FLAGS_ALLOW_DAMAGE ? TRUE : FALSE);
-    getChild<LLUICtrl>("check visible")->setValue(flags & REGION_FLAGS_EXTERNALLY_VISIBLE ? TRUE : FALSE);
-    getChild<LLUICtrl>("block terraform")->setValue(flags & REGION_FLAGS_BLOCK_TERRAFORM ? TRUE : FALSE);
-    getChild<LLUICtrl>("block dwell")->setValue(flags & REGION_FLAGS_BLOCK_DWELL ? TRUE : FALSE);
-    getChild<LLUICtrl>("is sandbox")->setValue(flags & REGION_FLAGS_SANDBOX ? TRUE : FALSE );
+    getChild<LLUICtrl>("check prelude")->setValue(is_prelude(flags));
+    getChild<LLUICtrl>("check fixed sun")->setValue(is_flag_set(flags, REGION_FLAGS_SUN_FIXED));
+    getChild<LLUICtrl>("check reset home")->setValue(is_flag_set(flags, REGION_FLAGS_RESET_HOME_ON_TELEPORT));
+    getChild<LLUICtrl>("check damage")->setValue(is_flag_set(flags, REGION_FLAGS_ALLOW_DAMAGE));
+    getChild<LLUICtrl>("check visible")->setValue(is_flag_set(flags, REGION_FLAGS_EXTERNALLY_VISIBLE));
+    getChild<LLUICtrl>("block terraform")->setValue(is_flag_set(flags, REGION_FLAGS_BLOCK_TERRAFORM));
+    getChild<LLUICtrl>("block dwell")->setValue(is_flag_set(flags, REGION_FLAGS_BLOCK_DWELL));
+    getChild<LLUICtrl>("is sandbox")->setValue(is_flag_set(flags, REGION_FLAGS_SANDBOX));
 }
 
 void LLPanelRegionTools::setBillableFactor(F32 billable_factor)
@@ -742,7 +742,7 @@ void LLPanelRegionTools::onChangeAnything()
 {
     if (gAgent.isGodlike())
     {
-        getChildView("Apply")->setEnabled(TRUE);
+        getChildView("Apply")->setEnabled(true);
     }
 }
 
@@ -751,8 +751,8 @@ void LLPanelRegionTools::onChangePrelude()
     // checking prelude auto-checks fixed sun
     if (getChild<LLUICtrl>("check prelude")->getValue().asBoolean())
     {
-        getChild<LLUICtrl>("check fixed sun")->setValue(TRUE);
-        getChild<LLUICtrl>("check reset home")->setValue(TRUE);
+        getChild<LLUICtrl>("check fixed sun")->setValue(true);
+        getChild<LLUICtrl>("check reset home")->setValue(true);
         onChangeAnything();
     }
     // pass on to default onChange handler
@@ -765,7 +765,7 @@ void LLPanelRegionTools::onChangeSimName(LLLineEditor* caller, void* userdata )
     if (userdata && gAgent.isGodlike())
     {
         LLPanelRegionTools* region_tools = (LLPanelRegionTools*) userdata;
-        region_tools->getChildView("Apply")->setEnabled(TRUE);
+        region_tools->getChildView("Apply")->setEnabled(true);
     }
 }
 
@@ -790,7 +790,7 @@ void LLPanelRegionTools::onApplyChanges()
     LLViewerRegion *region = gAgent.getRegion();
     if (region && gAgent.isGodlike())
     {
-        getChildView("Apply")->setEnabled(FALSE);
+        getChildView("Apply")->setEnabled(false);
         god_tools->sendGodUpdateRegionInfo();
         //LLFloaterReg::getTypedInstance<LLFloaterGodTools>("god_tools")->sendGodUpdateRegionInfo();
     }
@@ -824,7 +824,7 @@ void LLPanelRegionTools::onSelectRegion()
 
     LLVector3d north_east(REGION_WIDTH_METERS, REGION_WIDTH_METERS, 0);
     LLViewerParcelMgr::getInstance()->selectLand(regionp->getOriginGlobal(),
-                           regionp->getOriginGlobal() + north_east, FALSE);
+                           regionp->getOriginGlobal() + north_east, false);
 
 }
 
@@ -862,9 +862,9 @@ LLPanelGridTools::~LLPanelGridTools()
 {
 }
 
-BOOL LLPanelGridTools::postBuild()
+bool LLPanelGridTools::postBuild()
 {
-    return TRUE;
+    return true;
 }
 
 void LLPanelGridTools::refresh()
@@ -946,10 +946,10 @@ LLPanelObjectTools::~LLPanelObjectTools()
     // base class will take care of everything
 }
 
-BOOL LLPanelObjectTools::postBuild()
+bool LLPanelObjectTools::postBuild()
 {
     refresh();
-    return TRUE;
+    return true;
 }
 
 void LLPanelObjectTools::setTargetAvatar(const LLUUID &target_id)
@@ -1004,36 +1004,36 @@ U64 LLPanelObjectTools::computeRegionFlags(U64 flags) const
 
 void LLPanelObjectTools::setCheckFlags(U64 flags)
 {
-    getChild<LLUICtrl>("disable scripts")->setValue(flags & REGION_FLAGS_SKIP_SCRIPTS ? TRUE : FALSE);
-    getChild<LLUICtrl>("disable collisions")->setValue(flags & REGION_FLAGS_SKIP_COLLISIONS ? TRUE : FALSE);
-    getChild<LLUICtrl>("disable physics")->setValue(flags & REGION_FLAGS_SKIP_PHYSICS ? TRUE : FALSE);
+    getChild<LLUICtrl>("disable scripts")->setValue(is_flag_set(flags, REGION_FLAGS_SKIP_SCRIPTS));
+    getChild<LLUICtrl>("disable collisions")->setValue(is_flag_set(flags, REGION_FLAGS_SKIP_COLLISIONS));
+    getChild<LLUICtrl>("disable physics")->setValue(is_flag_set(flags, REGION_FLAGS_SKIP_PHYSICS));
 }
 
 
 void LLPanelObjectTools::clearAllWidgets()
 {
-    getChild<LLUICtrl>("disable scripts")->setValue(FALSE);
-    getChildView("disable scripts")->setEnabled(FALSE);
+    getChild<LLUICtrl>("disable scripts")->setValue(false);
+    getChildView("disable scripts")->setEnabled(false);
 
-    getChildView("Apply")->setEnabled(FALSE);
-    getChildView("Set Target")->setEnabled(FALSE);
-    getChildView("Delete Target's Scripted Objects On Others Land")->setEnabled(FALSE);
-    getChildView("Delete Target's Scripted Objects On *Any* Land")->setEnabled(FALSE);
-    getChildView("Delete *ALL* Of Target's Objects")->setEnabled(FALSE);
+    getChildView("Apply")->setEnabled(false);
+    getChildView("Set Target")->setEnabled(false);
+    getChildView("Delete Target's Scripted Objects On Others Land")->setEnabled(false);
+    getChildView("Delete Target's Scripted Objects On *Any* Land")->setEnabled(false);
+    getChildView("Delete *ALL* Of Target's Objects")->setEnabled(false);
 }
 
 
 void LLPanelObjectTools::enableAllWidgets()
 {
-    getChildView("disable scripts")->setEnabled(TRUE);
+    getChildView("disable scripts")->setEnabled(true);
 
-    getChildView("Apply")->setEnabled(FALSE);   // don't enable this one
-    getChildView("Set Target")->setEnabled(TRUE);
-    getChildView("Delete Target's Scripted Objects On Others Land")->setEnabled(TRUE);
-    getChildView("Delete Target's Scripted Objects On *Any* Land")->setEnabled(TRUE);
-    getChildView("Delete *ALL* Of Target's Objects")->setEnabled(TRUE);
-    getChildView("Get Top Colliders")->setEnabled(TRUE);
-    getChildView("Get Top Scripts")->setEnabled(TRUE);
+    getChildView("Apply")->setEnabled(false);   // don't enable this one
+    getChildView("Set Target")->setEnabled(true);
+    getChildView("Delete Target's Scripted Objects On Others Land")->setEnabled(true);
+    getChildView("Delete Target's Scripted Objects On *Any* Land")->setEnabled(true);
+    getChildView("Delete *ALL* Of Target's Objects")->setEnabled(true);
+    getChildView("Get Top Colliders")->setEnabled(true);
+    getChildView("Get Top Scripts")->setEnabled(true);
 }
 
 
@@ -1154,7 +1154,7 @@ void LLPanelObjectTools::onClickSet()
 {
     LLView * button = findChild<LLButton>("Set Target");
     LLFloater * root_floater = gFloaterView->getParentFloater(this);
-    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLPanelObjectTools::callbackAvatarID, this, _1,_2), FALSE, FALSE, FALSE, root_floater->getName(), button);
+    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLPanelObjectTools::callbackAvatarID, this, _1,_2), false, false, false, root_floater->getName(), button);
     // grandparent is a floater, which can have a dependent
     if (picker)
     {
@@ -1167,7 +1167,7 @@ void LLPanelObjectTools::onClickSetBySelection(void* data)
     LLPanelObjectTools* panelp = (LLPanelObjectTools*) data;
     if (!panelp) return;
 
-    const BOOL non_root_ok = TRUE;
+    const bool non_root_ok = true;
     LLSelectNode* node = LLSelectMgr::getInstance()->getSelection()->getFirstRootNode(NULL, non_root_ok);
     if (!node) return;
 
@@ -1195,7 +1195,7 @@ void LLPanelObjectTools::onChangeAnything()
 {
     if (gAgent.isGodlike())
     {
-        getChildView("Apply")->setEnabled(TRUE);
+        getChildView("Apply")->setEnabled(true);
     }
 }
 
@@ -1207,7 +1207,7 @@ void LLPanelObjectTools::onApplyChanges()
     if (region && gAgent.isGodlike())
     {
         // TODO -- implement this
-        getChildView("Apply")->setEnabled(FALSE);
+        getChildView("Apply")->setEnabled(false);
         god_tools->sendGodUpdateRegionInfo();
         //LLFloaterReg::getTypedInstance<LLFloaterGodTools>("god_tools")->sendGodUpdateRegionInfo();
     }
@@ -1231,11 +1231,11 @@ LLPanelRequestTools::~LLPanelRequestTools()
 {
 }
 
-BOOL LLPanelRequestTools::postBuild()
+bool LLPanelRequestTools::postBuild()
 {
     refresh();
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelRequestTools::refresh()
@@ -1344,7 +1344,7 @@ void LLPanelRequestTools::sendRequest(const LLHost& host)
     {
         gXferManager->requestFile(std::string("terrain.raw"), std::string("terrain.raw"), LL_PATH_NONE,
                                   host,
-                                  FALSE,
+                                  false,
                                   terrain_download_done,
                                   NULL);
     }
diff --git a/indra/newview/llfloatergodtools.h b/indra/newview/llfloatergodtools.h
index 3bf5f15b89..03ac91404d 100644
--- a/indra/newview/llfloatergodtools.h
+++ b/indra/newview/llfloatergodtools.h
@@ -102,7 +102,7 @@ protected:
 
 protected:
 
-    /*virtual*/ BOOL    postBuild();
+    /*virtual*/ bool    postBuild();
     // When the floater is going away, reset any options that need to be
     // cleared.
     void resetToolState();
@@ -127,7 +127,7 @@ public:
     LLPanelRegionTools();
     /*virtual*/ ~LLPanelRegionTools();
 
-    BOOL postBuild();
+    bool postBuild();
 
     /*virtual*/ void refresh();
 
@@ -189,7 +189,7 @@ public:
     LLPanelGridTools();
     virtual ~LLPanelGridTools();
 
-    BOOL postBuild();
+    bool postBuild();
 
     void refresh();
 
@@ -213,7 +213,7 @@ public:
     LLPanelObjectTools();
     /*virtual*/ ~LLPanelObjectTools();
 
-    BOOL postBuild();
+    bool postBuild();
 
     /*virtual*/ void refresh();
 
@@ -254,7 +254,7 @@ public:
     LLPanelRequestTools();
     /*virtual*/ ~LLPanelRequestTools();
 
-    BOOL postBuild();
+    bool postBuild();
 
     void refresh();
 
diff --git a/indra/newview/llfloatergotoline.cpp b/indra/newview/llfloatergotoline.cpp
index 005a7b3d4a..09ca0ab530 100644
--- a/indra/newview/llfloatergotoline.cpp
+++ b/indra/newview/llfloatergotoline.cpp
@@ -58,16 +58,16 @@ LLFloaterGotoLine::LLFloaterGotoLine(LLScriptEdCore* editor_core)
         }
 }
 
-BOOL LLFloaterGotoLine::postBuild()
+bool LLFloaterGotoLine::postBuild()
 {
     mGotoBox = getChild<LLLineEditor>("goto_line");
     mGotoBox->setCommitCallback(boost::bind(&LLFloaterGotoLine::onGotoBoxCommit, this));
-    mGotoBox->setCommitOnFocusLost(FALSE);
+    mGotoBox->setCommitOnFocusLost(false);
         getChild<LLLineEditor>("goto_line")->setPrevalidate(LLTextValidate::validateNonNegativeS32);
         childSetAction("goto_btn", onBtnGoto,this);
         setDefaultBtn("goto_btn");
 
-        return TRUE;
+        return true;
 }
 
 //static
@@ -111,7 +111,7 @@ void LLFloaterGotoLine::handleBtnGoto()
                 {
             mEditorCore->mEditor->deselect();
             mEditorCore->mEditor->setCursor(row, column);
-            mEditorCore->mEditor->setFocus(TRUE);
+            mEditorCore->mEditor->setFocus(true);
                 }
         }
 }
@@ -122,17 +122,17 @@ bool LLFloaterGotoLine::hasAccelerators() const
         {
                 return mEditorCore->hasAccelerators();
         }
-        return FALSE;
+        return false;
 }
 
-BOOL LLFloaterGotoLine::handleKeyHere(KEY key, MASK mask)
+bool LLFloaterGotoLine::handleKeyHere(KEY key, MASK mask)
 {
         if (mEditorCore)
         {
                 return mEditorCore->handleKeyHere(key, mask);
         }
 
-        return FALSE;
+        return false;
 }
 
 void LLFloaterGotoLine::onGotoBoxCommit()
@@ -148,11 +148,11 @@ void LLFloaterGotoLine::onGotoBoxCommit()
 
             S32 rownew = 0;
             S32 columnnew = 0;
-            mEditorCore->mEditor->getCurrentLineAndColumn( &rownew, &columnnew, FALSE );  // don't include wordwrap
+            mEditorCore->mEditor->getCurrentLineAndColumn( &rownew, &columnnew, false );  // don't include wordwrap
             if (rownew == row && columnnew == column)
             {
                     mEditorCore->mEditor->deselect();
-                    mEditorCore->mEditor->setFocus(TRUE);
+                    mEditorCore->mEditor->setFocus(true);
                     sInstance->closeFloater();
             } //else do nothing (if the cursor-position didn't change)
                 }
diff --git a/indra/newview/llfloatergotoline.h b/indra/newview/llfloatergotoline.h
index 04618ba881..02f3747cb2 100644
--- a/indra/newview/llfloatergotoline.h
+++ b/indra/newview/llfloatergotoline.h
@@ -40,7 +40,7 @@ public:
         LLFloaterGotoLine(LLScriptEdCore* editor_core);
         ~LLFloaterGotoLine();
 
-        /*virtual*/     BOOL    postBuild();
+        bool postBuild() override;
         static void show(LLScriptEdCore* editor_core);
 
         static void onBtnGoto(void* userdata);
@@ -49,8 +49,8 @@ public:
         LLScriptEdCore* getEditorCore() { return mEditorCore; }
         static LLFloaterGotoLine* getInstance() { return sInstance; }
 
-        virtual bool hasAccelerators() const;
-        virtual BOOL handleKeyHere(KEY key, MASK mask);
+        bool hasAccelerators() const override;
+        bool handleKeyHere(KEY key, MASK mask) override;
 
 private:
 
diff --git a/indra/newview/llfloatergridstatus.cpp b/indra/newview/llfloatergridstatus.cpp
index cfb0f7c20b..b6b844b307 100644
--- a/indra/newview/llfloatergridstatus.cpp
+++ b/indra/newview/llfloatergridstatus.cpp
@@ -43,16 +43,16 @@ const std::string DEFAULT_GRID_STATUS_URL = "http://status.secondlifegrid.net/";
 
 LLFloaterGridStatus::LLFloaterGridStatus(const Params& key) :
     LLFloaterWebContent(key),
-    mIsFirstUpdate(TRUE)
+    mIsFirstUpdate(true)
 {
 }
 
-BOOL LLFloaterGridStatus::postBuild()
+bool LLFloaterGridStatus::postBuild()
 {
     LLFloaterWebContent::postBuild();
     mWebBrowser->addObserver(this);
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterGridStatus::onOpen(const LLSD& key)
@@ -154,7 +154,7 @@ void LLFloaterGridStatus::getGridStatusRSSCoro()
     {
         gToolBarView->flashCommand(LLCommandId("gridstatus"), true);
     }
-    getInstance()->setFirstUpdate(FALSE);
+    getInstance()->setFirstUpdate(false);
 }
 
 // virtual
diff --git a/indra/newview/llfloatergridstatus.h b/indra/newview/llfloatergridstatus.h
index 51fc397574..570479d990 100644
--- a/indra/newview/llfloatergridstatus.h
+++ b/indra/newview/llfloatergridstatus.h
@@ -50,21 +50,21 @@ public:
     static void getGridStatusRSSCoro();
 
     void startGridStatusTimer();
-    BOOL isFirstUpdate() { return mIsFirstUpdate; }
-    void setFirstUpdate(BOOL first_update) { mIsFirstUpdate = first_update; }
+    bool isFirstUpdate() { return mIsFirstUpdate; }
+    void setFirstUpdate(bool first_update) { mIsFirstUpdate = first_update; }
 
     static LLFloaterGridStatus* getInstance();
 
 
 private:
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     void applyPreferredRect();
 
     static std::map<std::string, std::string> sItemsMap;
 
     LLFrameTimer    mGridStatusTimer;
-    BOOL            mIsFirstUpdate;
+    bool            mIsFirstUpdate;
 };
 
 #endif  // LL_LLFLOATERGRIDSTATUS_H
diff --git a/indra/newview/llfloatergroups.cpp b/indra/newview/llfloatergroups.cpp
index 0444927d07..2fd1a482e5 100644
--- a/indra/newview/llfloatergroups.cpp
+++ b/indra/newview/llfloatergroups.cpp
@@ -75,7 +75,7 @@ void LLFloaterGroupPicker::setPowersMask(U64 powers_mask)
 }
 
 
-BOOL LLFloaterGroupPicker::postBuild()
+bool LLFloaterGroupPicker::postBuild()
 {
     LLScrollListCtrl* list_ctrl = getChild<LLScrollListCtrl>("group list");
     if (list_ctrl)
@@ -91,9 +91,9 @@ BOOL LLFloaterGroupPicker::postBuild()
 
     setDefaultBtn("OK");
 
-    getChildView("OK")->setEnabled(TRUE);
+    getChildView("OK")->setEnabled(true);
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterGroupPicker::removeNoneOption()
@@ -179,7 +179,7 @@ void LLPanelGroups::reset()
     enableButtons();
 }
 
-BOOL LLPanelGroups::postBuild()
+bool LLPanelGroups::postBuild()
 {
     childSetCommitCallback("group list", onGroupList, this);
 
@@ -210,7 +210,7 @@ BOOL LLPanelGroups::postBuild()
 
     reset();
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelGroups::enableButtons()
@@ -224,23 +224,23 @@ void LLPanelGroups::enableButtons()
 
     if(group_id != gAgent.getGroupID())
     {
-        getChildView("Activate")->setEnabled(TRUE);
+        getChildView("Activate")->setEnabled(true);
     }
     else
     {
-        getChildView("Activate")->setEnabled(FALSE);
+        getChildView("Activate")->setEnabled(false);
     }
     if (group_id.notNull())
     {
-        getChildView("Info")->setEnabled(TRUE);
-        getChildView("IM")->setEnabled(TRUE);
-        getChildView("Leave")->setEnabled(TRUE);
+        getChildView("Info")->setEnabled(true);
+        getChildView("IM")->setEnabled(true);
+        getChildView("Leave")->setEnabled(true);
     }
     else
     {
-        getChildView("Info")->setEnabled(FALSE);
-        getChildView("IM")->setEnabled(FALSE);
-        getChildView("Leave")->setEnabled(FALSE);
+        getChildView("Info")->setEnabled(false);
+        getChildView("IM")->setEnabled(false);
+        getChildView("Leave")->setEnabled(false);
     }
     getChildView("Create")->setEnabled(gAgent.canJoinGroups());
 }
@@ -342,13 +342,13 @@ void LLPanelGroups::onGroupList(LLUICtrl* ctrl, void* userdata)
 
 void init_group_list(LLScrollListCtrl* group_list, const LLUUID& highlight_id, U64 powers_mask)
 {
-    S32 count = gAgent.mGroups.size();
+    auto count = gAgent.mGroups.size();
     LLUUID id;
     if (!group_list) return;
 
     group_list->operateOnAll(LLCtrlListInterface::OP_DELETE);
 
-    for(S32 i = 0; i < count; ++i)
+    for(size_t i = 0; i < count; ++i)
     {
         id = gAgent.mGroups.at(i).mID;
         LLGroupData* group_datap = &gAgent.mGroups.at(i);
@@ -371,7 +371,7 @@ void init_group_list(LLScrollListCtrl* group_list, const LLUUID& highlight_id, U
         }
     }
 
-    group_list->sortOnce(0, TRUE);
+    group_list->sortOnce(0, true);
 
     // add "none" to list at top
     {
diff --git a/indra/newview/llfloatergroups.h b/indra/newview/llfloatergroups.h
index 1e3d7dd630..be6ced40bf 100644
--- a/indra/newview/llfloatergroups.h
+++ b/indra/newview/llfloatergroups.h
@@ -60,11 +60,7 @@ public:
     typedef boost::signals2::signal<void (LLUUID id)> signal_t;
     void setSelectGroupCallback(const signal_t::slot_type& cb) { mGroupSelectSignal.connect(cb); }
     void setPowersMask(U64 powers_mask);
-    BOOL postBuild();
-
-    // implementation of factory policy
-    static LLFloaterGroupPicker* findInstance(const LLSD& seed);
-    static LLFloaterGroupPicker* createInstance(const LLSD& seed);
+    bool postBuild();
 
     // for cases like inviting avatar to group we don't want the none option
     void removeNoneOption();
@@ -97,7 +93,7 @@ public:
 
 protected:
     // initialize based on the type
-    BOOL postBuild();
+    bool postBuild();
 
     // highlight_id is a group id to highlight
     void enableButtons();
@@ -109,8 +105,6 @@ protected:
     static void onBtnIM(void* userdata);
     static void onBtnLeave(void* userdata);
     static void onBtnSearch(void* userdata);
-    static void onBtnVote(void* userdata);
-    static void onDoubleClickGroup(void* userdata);
 
     void create();
     void activate();
@@ -118,10 +112,6 @@ protected:
     void startIM();
     void leave();
     void search();
-    void callVote();
-
-    static bool callbackLeaveGroup(const LLSD& notification, const LLSD& response);
-
 };
 
 
diff --git a/indra/newview/llfloaterhelpbrowser.cpp b/indra/newview/llfloaterhelpbrowser.cpp
index f651342018..e77fa83606 100644
--- a/indra/newview/llfloaterhelpbrowser.cpp
+++ b/indra/newview/llfloaterhelpbrowser.cpp
@@ -47,7 +47,7 @@ LLFloaterHelpBrowser::LLFloaterHelpBrowser(const LLSD& key)
 {
 }
 
-BOOL LLFloaterHelpBrowser::postBuild()
+bool LLFloaterHelpBrowser::postBuild()
 {
     mBrowser = getChild<LLMediaCtrl>("browser");
     mBrowser->addObserver(this);
@@ -56,7 +56,7 @@ BOOL LLFloaterHelpBrowser::postBuild()
     childSetAction("open_browser", onClickOpenWebBrowser, this);
 
     buildURLHistory();
-    return TRUE;
+    return true;
 }
 
 void LLFloaterHelpBrowser::buildURLHistory()
@@ -74,7 +74,7 @@ void LLFloaterHelpBrowser::buildURLHistory()
 
 void LLFloaterHelpBrowser::onOpen(const LLSD& key)
 {
-    gSavedSettings.setBOOL("HelpFloaterOpen", TRUE);
+    gSavedSettings.setBOOL("HelpFloaterOpen", true);
 
     std::string topic = key.asString();
     mBrowser->navigateTo(LLViewerHelp::instance().getURL(topic));
@@ -85,7 +85,7 @@ void LLFloaterHelpBrowser::onClose(bool app_quitting)
 {
     if (!app_quitting)
     {
-        gSavedSettings.setBOOL("HelpFloaterOpen", FALSE);
+        gSavedSettings.setBOOL("HelpFloaterOpen", false);
     }
     // really really destroy the help browser when it's closed, it'll be recreated.
     destroy(); // really destroy this dialog on closure, it's relatively heavyweight.
diff --git a/indra/newview/llfloaterhelpbrowser.h b/indra/newview/llfloaterhelpbrowser.h
index 0dd944bf92..cbf3704190 100644
--- a/indra/newview/llfloaterhelpbrowser.h
+++ b/indra/newview/llfloaterhelpbrowser.h
@@ -40,7 +40,7 @@ class LLFloaterHelpBrowser :
  public:
     LLFloaterHelpBrowser(const LLSD& key);
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onClose(bool app_quitting);
     /*virtual*/ void onOpen(const LLSD& key);
 
diff --git a/indra/newview/llfloaterhoverheight.cpp b/indra/newview/llfloaterhoverheight.cpp
index 2d9bb61dc1..ef3e306da9 100644
--- a/indra/newview/llfloaterhoverheight.cpp
+++ b/indra/newview/llfloaterhoverheight.cpp
@@ -45,7 +45,7 @@ void LLFloaterHoverHeight::syncFromPreferenceSetting(void *user_data, bool updat
 
     LLFloaterHoverHeight *self = static_cast<LLFloaterHoverHeight*>(user_data);
     LLSliderCtrl* sldrCtrl = self->getChild<LLSliderCtrl>("HoverHeightSlider");
-    sldrCtrl->setValue(value,FALSE);
+    sldrCtrl->setValue(value,false);
 
     if (isAgentAvatarValid() && update_offset)
     {
@@ -56,7 +56,7 @@ void LLFloaterHoverHeight::syncFromPreferenceSetting(void *user_data, bool updat
     }
 }
 
-BOOL LLFloaterHoverHeight::postBuild()
+bool LLFloaterHoverHeight::postBuild()
 {
     LLSliderCtrl* sldrCtrl = getChild<LLSliderCtrl>("HoverHeightSlider");
     sldrCtrl->setMinValue(MIN_HOVER_Z);
@@ -86,7 +86,7 @@ BOOL LLFloaterHoverHeight::postBuild()
     // Set up based on initial region.
     onRegionChanged();
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterHoverHeight::onClose(bool app_quitting)
diff --git a/indra/newview/llfloaterhoverheight.h b/indra/newview/llfloaterhoverheight.h
index 778df644ef..029370b26b 100644
--- a/indra/newview/llfloaterhoverheight.h
+++ b/indra/newview/llfloaterhoverheight.h
@@ -33,7 +33,7 @@ class LLFloaterHoverHeight: public LLFloater
 {
 public:
     LLFloaterHoverHeight(const LLSD& key);
-    BOOL postBuild();
+    bool postBuild();
 
     static void onSliderMoved(LLUICtrl* ctrl, void* userData);
 
diff --git a/indra/newview/llfloaterhowto.cpp b/indra/newview/llfloaterhowto.cpp
index b414db6fc5..6a9f113d53 100644
--- a/indra/newview/llfloaterhowto.cpp
+++ b/indra/newview/llfloaterhowto.cpp
@@ -33,8 +33,8 @@
 #include "llweb.h"
 
 
-const S32 STACK_WIDTH = 300;
-const S32 STACK_HEIGHT = 505; // content will be 500
+constexpr S32 STACK_WIDTH = 300;
+constexpr S32 STACK_HEIGHT = 505; // content will be 500
 
 LLFloaterHowTo::LLFloaterHowTo(const Params& key) :
     LLFloaterWebContent(key)
@@ -42,11 +42,11 @@ LLFloaterHowTo::LLFloaterHowTo(const Params& key) :
     mShowPageTitle = false;
 }
 
-BOOL LLFloaterHowTo::postBuild()
+bool LLFloaterHowTo::postBuild()
 {
     LLFloaterWebContent::postBuild();
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterHowTo::onOpen(const LLSD& key)
@@ -78,14 +78,14 @@ LLFloaterHowTo* LLFloaterHowTo::getInstance()
     return LLFloaterReg::getTypedInstance<LLFloaterHowTo>("guidebook");
 }
 
-BOOL LLFloaterHowTo::handleKeyHere(KEY key, MASK mask)
+bool LLFloaterHowTo::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (KEY_F1 == key )
     {
         closeFloater();
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
diff --git a/indra/newview/llfloaterhowto.h b/indra/newview/llfloaterhowto.h
index 566e5454ad..9d7793817a 100644
--- a/indra/newview/llfloaterhowto.h
+++ b/indra/newview/llfloaterhowto.h
@@ -44,14 +44,14 @@ public:
 
     void onOpen(const LLSD& key) override;
 
-    BOOL handleKeyHere(KEY key, MASK mask) override;
+    bool handleKeyHere(KEY key, MASK mask) override;
 
     static LLFloaterHowTo* getInstance();
 
     bool matchesKey(const LLSD& key) override { return true; /*single instance*/ };
 
 private:
-    BOOL postBuild() override;
+    bool postBuild() override;
 };
 
 #endif  // LL_LLFLOATERHOWTO_H
diff --git a/indra/newview/llfloaterhud.cpp b/indra/newview/llfloaterhud.cpp
index 6c9535d9ad..c5ef187a46 100644
--- a/indra/newview/llfloaterhud.cpp
+++ b/indra/newview/llfloaterhud.cpp
@@ -55,10 +55,10 @@ LLFloaterHUD::LLFloaterHUD(const LLSD& key)
     }
 
     // Opaque background since we never get the focus
-    setBackgroundOpaque(TRUE);
+    setBackgroundOpaque(true);
 }
 
-BOOL LLFloaterHUD::postBuild()
+bool LLFloaterHUD::postBuild()
 {
     mWebBrowser = getChild<LLMediaCtrl>("floater_hud_browser" );
     if (mWebBrowser)
@@ -75,7 +75,7 @@ BOOL LLFloaterHUD::postBuild()
         mWebBrowser->navigateTo(url);
     }
 
-    return TRUE;
+    return true;
 }
 
 // Destructor
diff --git a/indra/newview/llfloaterhud.h b/indra/newview/llfloaterhud.h
index b761794295..710a44fc57 100644
--- a/indra/newview/llfloaterhud.h
+++ b/indra/newview/llfloaterhud.h
@@ -36,7 +36,7 @@ class LLFloaterHUD : public LLFloater
     friend class LLFloaterReg;
 public:
 
-    BOOL postBuild();
+    bool postBuild() override;
 
 private:
     // Handles its own construction and destruction, so private.
diff --git a/indra/newview/llfloaterimagepreview.cpp b/indra/newview/llfloaterimagepreview.cpp
index 73adb2175a..ea49c88755 100644
--- a/indra/newview/llfloaterimagepreview.cpp
+++ b/indra/newview/llfloaterimagepreview.cpp
@@ -87,11 +87,11 @@ LLFloaterImagePreview::LLFloaterImagePreview(const std::string& filename) :
 //-----------------------------------------------------------------------------
 // postBuild()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterImagePreview::postBuild()
+bool LLFloaterImagePreview::postBuild()
 {
     if (!LLFloaterNameDesc::postBuild())
     {
-        return FALSE;
+        return false;
     }
 
     LLCtrlSelectionInterface* iface = childGetSelectionInterface("clothing_type_combo");
@@ -107,12 +107,12 @@ BOOL LLFloaterImagePreview::postBuild()
         PREVIEW_HPAD + PREF_BUTTON_HEIGHT + PREVIEW_HPAD);
     mPreviewImageRect.set(0.f, 1.f, 1.f, 0.f);
 
-    getChildView("bad_image_text")->setVisible(FALSE);
+    getChildView("bad_image_text")->setVisible(false);
 
     if (mRawImagep.notNull() && gAgent.getRegion() != NULL)
     {
         mAvatarPreview = new LLImagePreviewAvatar(256, 256);
-        mAvatarPreview->setPreviewTarget("mPelvis", "mUpperBodyMesh0", mRawImagep, 2.f, FALSE);
+        mAvatarPreview->setPreviewTarget("mPelvis", "mUpperBodyMesh0", mRawImagep, 2.f, false);
 
         mSculptedPreview = new LLImagePreviewSculpted(256, 256);
         mSculptedPreview->setPreviewTarget(mRawImagep, 2.0f);
@@ -122,7 +122,7 @@ BOOL LLFloaterImagePreview::postBuild()
             // We want "lossless_check" to be unchecked when it is disabled, regardless of
             // LosslessJ2CUpload state, so only assign control when enabling checkbox
             LLCheckBoxCtrl* check_box = getChild<LLCheckBoxCtrl>("lossless_check");
-            check_box->setEnabled(TRUE);
+            check_box->setEnabled(true);
             check_box->setControlVariable(gSavedSettings.getControl("LosslessJ2CUpload"));
         }
     }
@@ -130,9 +130,9 @@ BOOL LLFloaterImagePreview::postBuild()
     {
         mAvatarPreview = NULL;
         mSculptedPreview = NULL;
-        getChildView("bad_image_text")->setVisible(TRUE);
-        getChildView("clothing_type_combo")->setEnabled(FALSE);
-        getChildView("ok_btn")->setEnabled(FALSE);
+        getChildView("bad_image_text")->setVisible(true);
+        getChildView("clothing_type_combo")->setEnabled(false);
+        getChildView("ok_btn")->setEnabled(false);
 
         if(!mImageLoadError.empty())
         {
@@ -142,7 +142,7 @@ BOOL LLFloaterImagePreview::postBuild()
 
     getChild<LLUICtrl>("ok_btn")->setCommitCallback(boost::bind(&LLFloaterNameDesc::onBtnOK, this));
 
-    return TRUE;
+    return true;
 }
 
 
@@ -191,28 +191,28 @@ void    LLFloaterImagePreview::onPreviewTypeCommit(LLUICtrl* ctrl, void* userdat
     case 0:
         break;
     case 1:
-        fp->mAvatarPreview->setPreviewTarget("mSkull", "mHairMesh0", fp->mRawImagep, 0.4f, FALSE);
+        fp->mAvatarPreview->setPreviewTarget("mSkull", "mHairMesh0", fp->mRawImagep, 0.4f, false);
         break;
     case 2:
-        fp->mAvatarPreview->setPreviewTarget("mSkull", "mHeadMesh0", fp->mRawImagep, 0.4f, FALSE);
+        fp->mAvatarPreview->setPreviewTarget("mSkull", "mHeadMesh0", fp->mRawImagep, 0.4f, false);
         break;
     case 3:
-        fp->mAvatarPreview->setPreviewTarget("mChest", "mUpperBodyMesh0", fp->mRawImagep, 1.0f, FALSE);
+        fp->mAvatarPreview->setPreviewTarget("mChest", "mUpperBodyMesh0", fp->mRawImagep, 1.0f, false);
         break;
     case 4:
-        fp->mAvatarPreview->setPreviewTarget("mKneeLeft", "mLowerBodyMesh0", fp->mRawImagep, 1.2f, FALSE);
+        fp->mAvatarPreview->setPreviewTarget("mKneeLeft", "mLowerBodyMesh0", fp->mRawImagep, 1.2f, false);
         break;
     case 5:
-        fp->mAvatarPreview->setPreviewTarget("mSkull", "mHeadMesh0", fp->mRawImagep, 0.4f, TRUE);
+        fp->mAvatarPreview->setPreviewTarget("mSkull", "mHeadMesh0", fp->mRawImagep, 0.4f, true);
         break;
     case 6:
-        fp->mAvatarPreview->setPreviewTarget("mChest", "mUpperBodyMesh0", fp->mRawImagep, 1.2f, TRUE);
+        fp->mAvatarPreview->setPreviewTarget("mChest", "mUpperBodyMesh0", fp->mRawImagep, 1.2f, true);
         break;
     case 7:
-        fp->mAvatarPreview->setPreviewTarget("mKneeLeft", "mLowerBodyMesh0", fp->mRawImagep, 1.2f, TRUE);
+        fp->mAvatarPreview->setPreviewTarget("mKneeLeft", "mLowerBodyMesh0", fp->mRawImagep, 1.2f, true);
         break;
     case 8:
-        fp->mAvatarPreview->setPreviewTarget("mKneeLeft", "mSkirtMesh0", fp->mRawImagep, 1.3f, FALSE);
+        fp->mAvatarPreview->setPreviewTarget("mKneeLeft", "mSkirtMesh0", fp->mRawImagep, 1.3f, false);
         break;
     case 9:
         fp->mSculptedPreview->setPreviewTarget(fp->mRawImagep, 2.0f);
@@ -268,7 +268,7 @@ void LLFloaterImagePreview::draw()
             }
             else
             {
-                mImagep = LLViewerTextureManager::getLocalTexture(mRawImagep.get(), FALSE) ;
+                mImagep = LLViewerTextureManager::getLocalTexture(mRawImagep.get(), false) ;
 
                 gGL.getTexUnit(0)->unbind(mImagep->getTarget()) ;
                 gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, mImagep->getTexName());
@@ -344,54 +344,54 @@ bool LLFloaterImagePreview::loadImage(const std::string& src_filename)
 {
     try
     {
-        std::string exten = gDirUtilp->getExtension(src_filename);
-        U32 codec = LLImageBase::getCodecFromExtension(exten);
+    std::string exten = gDirUtilp->getExtension(src_filename);
+    U32 codec = LLImageBase::getCodecFromExtension(exten);
 
-        LLImageDimensionsInfo image_info;
-        if (!image_info.load(src_filename, codec))
-        {
-            mImageLoadError = image_info.getLastError();
-            return false;
-        }
+    LLImageDimensionsInfo image_info;
+    if (!image_info.load(src_filename,codec))
+    {
+        mImageLoadError = image_info.getLastError();
+        return false;
+    }
 
-        S32 max_width = gSavedSettings.getS32("max_texture_dimension_X");
-        S32 max_height = gSavedSettings.getS32("max_texture_dimension_Y");
+    S32 max_width = gSavedSettings.getS32("max_texture_dimension_X");
+    S32 max_height = gSavedSettings.getS32("max_texture_dimension_Y");
 
-        if ((image_info.getWidth() > max_width) || (image_info.getHeight() > max_height))
-        {
-            LLStringUtil::format_map_t args;
-            args["WIDTH"] = llformat("%d", max_width);
-            args["HEIGHT"] = llformat("%d", max_height);
+    if ((image_info.getWidth() > max_width) || (image_info.getHeight() > max_height))
+    {
+        LLStringUtil::format_map_t args;
+        args["WIDTH"] = llformat("%d", max_width);
+        args["HEIGHT"] = llformat("%d", max_height);
 
-            mImageLoadError = LLTrans::getString("texture_load_dimensions_error", args);
-            return false;
-        }
+        mImageLoadError = LLTrans::getString("texture_load_dimensions_error", args);
+        return false;
+    }
 
-        // Load the image
-        LLPointer<LLImageFormatted> image = LLImageFormatted::createFromType(codec);
-        if (image.isNull())
-        {
-            return false;
-        }
-        if (!image->load(src_filename))
-        {
-            return false;
-        }
-        // Decompress or expand it in a raw image structure
-        LLPointer<LLImageRaw> raw_image = new LLImageRaw;
-        if (!image->decode(raw_image, 0.0f))
-        {
-            return false;
-        }
-        // Check the image constraints
-        if ((image->getComponents() != 3) && (image->getComponents() != 4))
-        {
-            image->setLastError("Image files with less than 3 or more than 4 components are not supported.");
-            return false;
-        }
+    // Load the image
+    LLPointer<LLImageFormatted> image = LLImageFormatted::createFromType(codec);
+    if (image.isNull())
+    {
+        return false;
+    }
+    if (!image->load(src_filename))
+    {
+        return false;
+    }
+    // Decompress or expand it in a raw image structure
+    LLPointer<LLImageRaw> raw_image = new LLImageRaw;
+    if (!image->decode(raw_image, 0.0f))
+    {
+        return false;
+    }
+    // Check the image constraints
+    if ((image->getComponents() != 3) && (image->getComponents() != 4))
+    {
+        image->setLastError("Image files with less than 3 or more than 4 components are not supported.");
+        return false;
+    }
 
-        raw_image->biasedScaleToPowerOfTwo(LLViewerFetchedTexture::MAX_IMAGE_SIZE_DEFAULT);
-        mRawImagep = raw_image;
+    raw_image->biasedScaleToPowerOfTwo(LLViewerFetchedTexture::MAX_IMAGE_SIZE_DEFAULT);
+    mRawImagep = raw_image;
     }
     catch (...)
     {
@@ -405,7 +405,7 @@ bool LLFloaterImagePreview::loadImage(const std::string& src_filename)
 //-----------------------------------------------------------------------------
 // handleMouseDown()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterImagePreview::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLFloaterImagePreview::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (mPreviewRect.pointInRect(x, y))
     {
@@ -414,7 +414,7 @@ BOOL LLFloaterImagePreview::handleMouseDown(S32 x, S32 y, MASK mask)
         gViewerWindow->hideCursor();
         mLastMouseX = x;
         mLastMouseY = y;
-        return TRUE;
+        return true;
     }
 
     return LLFloater::handleMouseDown(x, y, mask);
@@ -423,9 +423,9 @@ BOOL LLFloaterImagePreview::handleMouseDown(S32 x, S32 y, MASK mask)
 //-----------------------------------------------------------------------------
 // handleMouseUp()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterImagePreview::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLFloaterImagePreview::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    gFocusMgr.setMouseCapture(FALSE);
+    gFocusMgr.setMouseCapture(nullptr);
     gViewerWindow->showCursor();
     return LLFloater::handleMouseUp(x, y, mask);
 }
@@ -433,7 +433,7 @@ BOOL LLFloaterImagePreview::handleMouseUp(S32 x, S32 y, MASK mask)
 //-----------------------------------------------------------------------------
 // handleHover()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterImagePreview::handleHover(S32 x, S32 y, MASK mask)
+bool LLFloaterImagePreview::handleHover(S32 x, S32 y, MASK mask)
 {
     MASK local_mask = mask & ~MASK_ALT;
 
@@ -547,13 +547,13 @@ BOOL LLFloaterImagePreview::handleHover(S32 x, S32 y, MASK mask)
         gViewerWindow->setCursor(UI_CURSOR_TOOLZOOMIN);
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // handleScrollWheel()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterImagePreview::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLFloaterImagePreview::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if (mPreviewRect.pointInRect(x, y) && mAvatarPreview)
     {
@@ -564,7 +564,7 @@ BOOL LLFloaterImagePreview::handleScrollWheel(S32 x, S32 y, S32 clicks)
         mSculptedPreview->refresh();
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -580,9 +580,9 @@ void LLFloaterImagePreview::onMouseCaptureLostImagePreview(LLMouseHandler* handl
 //-----------------------------------------------------------------------------
 // LLImagePreviewAvatar
 //-----------------------------------------------------------------------------
-LLImagePreviewAvatar::LLImagePreviewAvatar(S32 width, S32 height) : LLViewerDynamicTexture(width, height, 3, ORDER_MIDDLE, FALSE)
+LLImagePreviewAvatar::LLImagePreviewAvatar(S32 width, S32 height) : LLViewerDynamicTexture(width, height, 3, ORDER_MIDDLE, false)
 {
-    mNeedsUpdate = TRUE;
+    mNeedsUpdate = true;
     mTargetJoint = NULL;
     mTargetMesh = NULL;
     mCameraDistance = 0.f;
@@ -608,7 +608,7 @@ S8 LLImagePreviewAvatar::getType() const
     return LLViewerDynamicTexture::LL_IMAGE_PREVIEW_AVATAR ;
 }
 
-void LLImagePreviewAvatar::setPreviewTarget(const std::string& joint_name, const std::string& mesh_name, LLImageRaw* imagep, F32 distance, BOOL male)
+void LLImagePreviewAvatar::setPreviewTarget(const std::string& joint_name, const std::string& mesh_name, LLImageRaw* imagep, F32 distance, bool male)
 {
     mTargetJoint = mDummyAvatar->mRoot->findJoint(joint_name);
     // clear out existing test mesh
@@ -629,11 +629,11 @@ void LLImagePreviewAvatar::setPreviewTarget(const std::string& joint_name, const
         mDummyAvatar->updateVisualParams();
         mDummyAvatar->updateGeometry(mDummyAvatar->mDrawable);
     }
-    mDummyAvatar->mRoot->setVisible(FALSE, TRUE);
+    mDummyAvatar->mRoot->setVisible(false, true);
 
     mTargetMesh = dynamic_cast<LLViewerJointMesh*>(mDummyAvatar->mRoot->findJoint(mesh_name));
     mTargetMesh->setTestTexture(mTextureName);
-    mTargetMesh->setVisible(TRUE, FALSE);
+    mTargetMesh->setVisible(true, false);
     mCameraDistance = distance;
     mCameraZoom = 1.f;
     mCameraPitch = 0.f;
@@ -660,9 +660,9 @@ void LLImagePreviewAvatar::clearPreviewTexture(const std::string& mesh_name)
 //-----------------------------------------------------------------------------
 // update()
 //-----------------------------------------------------------------------------
-BOOL LLImagePreviewAvatar::render()
+bool LLImagePreviewAvatar::render()
 {
-    mNeedsUpdate = FALSE;
+    mNeedsUpdate = false;
     LLVOAvatar* avatarp = mDummyAvatar;
 
     gGL.pushUIMatrix();
@@ -707,7 +707,7 @@ BOOL LLImagePreviewAvatar::render()
 
     LLViewerCamera::getInstance()->setAspect((F32)mFullWidth / mFullHeight);
     LLViewerCamera::getInstance()->setView(LLViewerCamera::getInstance()->getDefaultFOV() / mCameraZoom);
-    LLViewerCamera::getInstance()->setPerspective(FALSE, mOrigin.mX, mOrigin.mY, mFullWidth, mFullHeight, FALSE);
+    LLViewerCamera::getInstance()->setPerspective(false, mOrigin.mX, mOrigin.mY, mFullWidth, mFullHeight, false);
 
     LLVertexBuffer::unbind();
     avatarp->updateLOD();
@@ -729,7 +729,7 @@ BOOL LLImagePreviewAvatar::render()
 
     gGL.popUIMatrix();
     gGL.color4f(1,1,1,1);
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -737,7 +737,7 @@ BOOL LLImagePreviewAvatar::render()
 //-----------------------------------------------------------------------------
 void LLImagePreviewAvatar::refresh()
 {
-    mNeedsUpdate = TRUE;
+    mNeedsUpdate = true;
 }
 
 //-----------------------------------------------------------------------------
@@ -769,9 +769,9 @@ void LLImagePreviewAvatar::pan(F32 right, F32 up)
 // LLImagePreviewSculpted
 //-----------------------------------------------------------------------------
 
-LLImagePreviewSculpted::LLImagePreviewSculpted(S32 width, S32 height) : LLViewerDynamicTexture(width, height, 3, ORDER_MIDDLE, FALSE)
+LLImagePreviewSculpted::LLImagePreviewSculpted(S32 width, S32 height) : LLViewerDynamicTexture(width, height, 3, ORDER_MIDDLE, false)
 {
-    mNeedsUpdate = TRUE;
+    mNeedsUpdate = true;
     mCameraDistance = 0.f;
     mCameraYaw = 0.f;
     mCameraPitch = 0.f;
@@ -807,6 +807,7 @@ void LLImagePreviewSculpted::setPreviewTarget(LLImageRaw* imagep, F32 distance)
 
     if (imagep)
     {
+        LLImageDataSharedLock lock(imagep);
         mVolume->sculpt(imagep->getWidth(), imagep->getHeight(), imagep->getComponents(), imagep->getData(), 0, false);
     }
 
@@ -863,9 +864,9 @@ void LLImagePreviewSculpted::setPreviewTarget(LLImageRaw* imagep, F32 distance)
 //-----------------------------------------------------------------------------
 // render()
 //-----------------------------------------------------------------------------
-BOOL LLImagePreviewSculpted::render()
+bool LLImagePreviewSculpted::render()
 {
-    mNeedsUpdate = FALSE;
+    mNeedsUpdate = false;
     LLGLSUIDefault def;
     LLGLDisable no_blend(GL_BLEND);
     LLGLEnable cull(GL_CULL_FACE);
@@ -909,7 +910,7 @@ BOOL LLImagePreviewSculpted::render()
 
     LLViewerCamera::getInstance()->setAspect((F32) mFullWidth / mFullHeight);
     LLViewerCamera::getInstance()->setView(LLViewerCamera::getInstance()->getDefaultFOV() / mCameraZoom);
-    LLViewerCamera::getInstance()->setPerspective(FALSE, mOrigin.mX, mOrigin.mY, mFullWidth, mFullHeight, FALSE);
+    LLViewerCamera::getInstance()->setPerspective(false, mOrigin.mX, mOrigin.mY, mFullWidth, mFullHeight, false);
 
     const LLVolumeFace &vf = mVolume->getVolumeFace(0);
     U32 num_indices = vf.mNumIndices;
@@ -932,7 +933,7 @@ BOOL LLImagePreviewSculpted::render()
 
     gObjectPreviewProgram.unbind();
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -940,7 +941,7 @@ BOOL LLImagePreviewSculpted::render()
 //-----------------------------------------------------------------------------
 void LLImagePreviewSculpted::refresh()
 {
-    mNeedsUpdate = TRUE;
+    mNeedsUpdate = true;
 }
 
 //-----------------------------------------------------------------------------
diff --git a/indra/newview/llfloaterimagepreview.h b/indra/newview/llfloaterimagepreview.h
index 6cd5bb4ca7..ed395722de 100644
--- a/indra/newview/llfloaterimagepreview.h
+++ b/indra/newview/llfloaterimagepreview.h
@@ -53,15 +53,15 @@ protected:
     void setPreviewTarget(LLImageRaw *imagep, F32 distance);
     void setTexture(U32 name) { mTextureName = name; }
 
-    BOOL render() override;
+    bool render() override;
     void refresh();
     void rotate(F32 yaw_radians, F32 pitch_radians);
     void zoom(F32 zoom_amt);
     void pan(F32 right, F32 up);
-    virtual BOOL needsRender() override { return mNeedsUpdate; }
+    virtual bool needsRender() override { return mNeedsUpdate; }
 
  protected:
-    BOOL        mNeedsUpdate;
+    bool        mNeedsUpdate;
     U32         mTextureName;
     F32         mCameraDistance;
     F32         mCameraYaw;
@@ -83,19 +83,19 @@ public:
 
     S8 getType() const override;
 
-    void setPreviewTarget(const std::string& joint_name, const std::string& mesh_name, LLImageRaw* imagep, F32 distance, BOOL male);
+    void setPreviewTarget(const std::string& joint_name, const std::string& mesh_name, LLImageRaw* imagep, F32 distance, bool male);
     void setTexture(U32 name) { mTextureName = name; }
     void clearPreviewTexture(const std::string& mesh_name);
 
-    BOOL    render() override;
+    bool    render() override;
     void    refresh();
     void    rotate(F32 yaw_radians, F32 pitch_radians);
     void    zoom(F32 zoom_amt);
     void    pan(F32 right, F32 up);
-    virtual BOOL needsRender() override { return mNeedsUpdate; }
+    virtual bool needsRender() override { return mNeedsUpdate; }
 
 protected:
-    BOOL        mNeedsUpdate;
+    bool        mNeedsUpdate;
     LLJoint*    mTargetJoint;
     LLViewerJointMesh*  mTargetMesh;
     F32         mCameraDistance;
@@ -113,14 +113,14 @@ public:
     LLFloaterImagePreview(const std::string& filename);
     virtual ~LLFloaterImagePreview();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     S32 getExpectedUploadCost() const override;
 
-    BOOL handleMouseDown(S32 x, S32 y, MASK mask) override;
-    BOOL handleMouseUp(S32 x, S32 y, MASK mask) override;
-    BOOL handleHover(S32 x, S32 y, MASK mask) override;
-    BOOL handleScrollWheel(S32 x, S32 y, S32 clicks) override;
+    bool handleMouseDown(S32 x, S32 y, MASK mask) override;
+    bool handleMouseUp(S32 x, S32 y, MASK mask) override;
+    bool handleHover(S32 x, S32 y, MASK mask) override;
+    bool handleScrollWheel(S32 x, S32 y, S32 clicks) override;
 
     static void onMouseCaptureLostImagePreview(LLMouseHandler*);
 
diff --git a/indra/newview/llfloaterimcontainer.cpp b/indra/newview/llfloaterimcontainer.cpp
index 8d0f0a0e57..add389748f 100644
--- a/indra/newview/llfloaterimcontainer.cpp
+++ b/indra/newview/llfloaterimcontainer.cpp
@@ -88,7 +88,7 @@ LLFloaterIMContainer::LLFloaterIMContainer(const LLSD& seed, const Params& param
     // Firstly add our self to IMSession observers, so we catch session events
     LLIMMgr::getInstance()->addSessionObserver(this);
 
-    mAutoResize = FALSE;
+    mAutoResize = false;
     LLTransientFloaterMgr::getInstance()->addControlView(LLTransientFloaterMgr::IM, this);
 }
 
@@ -114,7 +114,7 @@ LLFloaterIMContainer::~LLFloaterIMContainer()
     }
 }
 
-void LLFloaterIMContainer::sessionAdded(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id, BOOL has_offline_msg)
+void LLFloaterIMContainer::sessionAdded(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id, bool has_offline_msg)
 {
     addConversationListItem(session_id);
     LLFloaterIMSessionTab::addToHost(session_id);
@@ -182,7 +182,7 @@ void LLFloaterIMContainer::onCurrentChannelChanged(const LLUUID& session_id)
     }
 }
 
-BOOL LLFloaterIMContainer::postBuild()
+bool LLFloaterIMContainer::postBuild()
 {
     mOrigMinWidth = getMinWidth();
     mOrigMinHeight = getMinHeight();
@@ -267,7 +267,7 @@ BOOL LLFloaterIMContainer::postBuild()
         S32 conversations_panel_width = gSavedPerAccountSettings.getS32("ConversationsListPaneWidth");
         LLRect conversations_panel_rect = mConversationsPane->getRect();
         conversations_panel_rect.mRight = conversations_panel_rect.mLeft + conversations_panel_width;
-        mConversationsPane->handleReshape(conversations_panel_rect, TRUE);
+        mConversationsPane->handleReshape(conversations_panel_rect, true);
     }
 
     // Init the sort order now that the root had been created
@@ -294,7 +294,7 @@ BOOL LLFloaterIMContainer::postBuild()
     mParticipantRefreshTimer.setTimerExpirySec(0);
     mParticipantRefreshTimer.start();
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterIMContainer::onOpen(const LLSD& key)
@@ -309,7 +309,7 @@ void LLFloaterIMContainer::onOpen(const LLSD& key)
 
 // virtual
 void LLFloaterIMContainer::addFloater(LLFloater* floaterp,
-                                      BOOL select_added_floater,
+                                      bool select_added_floater,
                                       LLTabContainer::eInsertionPoint insertion_point)
 {
     if(!floaterp) return;
@@ -329,7 +329,7 @@ void LLFloaterIMContainer::addFloater(LLFloater* floaterp,
 
 
     LLIconCtrl* icon = 0;
-    bool is_in_group = gAgent.isInGroup(session_id, TRUE);
+    bool is_in_group = gAgent.isInGroup(session_id, true);
     LLUUID icon_id;
 
     if (is_in_group)
@@ -372,7 +372,7 @@ void LLFloaterIMContainer::addFloater(LLFloater* floaterp,
 void LLFloaterIMContainer::onCloseFloater(LLUUID& id)
 {
     mSessions.erase(id);
-    setFocus(TRUE);
+    setFocus(true);
 }
 
 void LLFloaterIMContainer::onNewMessageReceived(const LLSD& data)
@@ -384,8 +384,8 @@ void LLFloaterIMContainer::onNewMessageReceived(const LLSD& data)
     if(floaterp && current_floater && floaterp != current_floater)
     {
         if(LLMultiFloater::isFloaterFlashing(floaterp))
-            LLMultiFloater::setFloaterFlashing(floaterp, FALSE);
-        LLMultiFloater::setFloaterFlashing(floaterp, TRUE);
+            LLMultiFloater::setFloaterFlashing(floaterp, false);
+        LLMultiFloater::setFloaterFlashing(floaterp, true);
     }
 }
 
@@ -634,7 +634,7 @@ void LLFloaterIMContainer::handleConversationModelEvent(const LLSD& event)
             {
                 participant_view = createConversationViewParticipant(participant_model);
                 participant_view->addToFolder(session_view);
-                participant_view->setVisible(TRUE);
+                participant_view->setVisible(true);
             }
         }
         // Add a participant view to the conversation floater
@@ -718,7 +718,7 @@ void LLFloaterIMContainer::returnFloaterToHost()
     floater->onTearOffClicked();
 }
 
-void LLFloaterIMContainer::setMinimized(BOOL b)
+void LLFloaterIMContainer::setMinimized(bool b)
 {
     bool was_minimized = isMinimized();
     LLMultiFloater::setMinimized(b);
@@ -741,7 +741,7 @@ void LLFloaterIMContainer::setMinimized(BOOL b)
     }
 }
 
-void LLFloaterIMContainer::setVisible(BOOL visible)
+void LLFloaterIMContainer::setVisible(bool visible)
 {
     LLFloaterIMNearbyChat* nearby_chat;
     if (visible)
@@ -823,7 +823,7 @@ void LLFloaterIMContainer::getDetachedConversationFloaters(floater_list_t& float
     }
 }
 
-void LLFloaterIMContainer::setVisibleAndFrontmost(BOOL take_focus, const LLSD& key)
+void LLFloaterIMContainer::setVisibleAndFrontmost(bool take_focus, const LLSD& key)
 {
     LLMultiFloater::setVisibleAndFrontmost(take_focus, key);
     // Do not select "Nearby Chat" conversation, since it will bring its window to front
@@ -988,7 +988,7 @@ void LLFloaterIMContainer::onAddButtonClicked()
 {
     LLView * button = findChild<LLView>("conversations_pane_buttons_expanded")->findChild<LLButton>("add_btn");
     LLFloater* root_floater = gFloaterView->getParentFloater(this);
-    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLFloaterIMContainer::onAvatarPicked, this, _1), TRUE, TRUE, TRUE, root_floater->getName(), button);
+    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLFloaterIMContainer::onAvatarPicked, this, _1), true, true, true, root_floater->getName(), button);
 
     if (picker && root_floater)
     {
@@ -1058,7 +1058,7 @@ void LLFloaterIMContainer::onCustomAction(const LLSD& userdata)
     }
 }
 
-BOOL LLFloaterIMContainer::isActionChecked(const LLSD& userdata)
+bool LLFloaterIMContainer::isActionChecked(const LLSD& userdata)
 {
     LLConversationSort order = mConversationViewModel.getSorter();
     std::string command = userdata.asString();
@@ -1094,7 +1094,7 @@ BOOL LLFloaterIMContainer::isActionChecked(const LLSD& userdata)
     {
         return gSavedSettings.getBOOL("TranslateChat");
     }
-    return FALSE;
+    return false;
 }
 
 void LLFloaterIMContainer::setSortOrderSessions(const LLConversationFilter::ESortOrderType order)
@@ -1706,9 +1706,9 @@ void LLFloaterIMContainer::selectNextConversationByID(const LLUUID& uuid)
 }
 
 // Synchronous select the conversation item and the conversation floater
-BOOL LLFloaterIMContainer::selectConversationPair(const LLUUID& session_id, bool select_widget, bool focus_floater/*=true*/)
+bool LLFloaterIMContainer::selectConversationPair(const LLUUID& session_id, bool select_widget, bool focus_floater/*=true*/)
 {
-    BOOL handled = TRUE;
+    bool handled = true;
     LLFloaterIMSessionTab* session_floater = LLFloaterIMSessionTab::findConversation(session_id);
 
     /* widget processing */
@@ -1717,7 +1717,7 @@ BOOL LLFloaterIMContainer::selectConversationPair(const LLUUID& session_id, bool
         LLFolderViewItem* widget = get_ptr_in_map(mConversationsWidgets,session_id);
         if (widget && widget->getParentFolder())
         {
-            widget->getParentFolder()->setSelection(widget, FALSE, FALSE);
+            widget->getParentFolder()->setSelection(widget, false, false);
             mConversationsRoot->scrollToShowSelection();
         }
     }
@@ -1787,8 +1787,8 @@ void LLFloaterIMContainer::setNearbyDistances()
         // Get the position of the agent
         const LLVector3d& me_pos = gAgent.getPositionGlobal();
         // For each nearby avatar, compute and update the distance
-        int avatar_count = positions.size();
-        for (int i = 0; i < avatar_count; i++)
+        auto avatar_count = positions.size();
+        for (size_t i = 0; i < avatar_count; i++)
         {
             F64 dist = dist_vec_squared(positions[i], me_pos);
             item->setDistance(avatar_ids[i],dist);
@@ -1898,10 +1898,10 @@ bool LLFloaterIMContainer::removeConversationListItem(const LLUUID& uuid, bool c
         is_widget_selected = widget->isSelected();
         if (mConversationsRoot)
         {
-            new_selection = mConversationsRoot->getNextFromChild(widget, FALSE);
+            new_selection = mConversationsRoot->getNextFromChild(widget, false);
             if (!new_selection)
             {
-                new_selection = mConversationsRoot->getPreviousFromChild(widget, FALSE);
+                new_selection = mConversationsRoot->getPreviousFromChild(widget, false);
             }
         }
 
@@ -1918,7 +1918,7 @@ bool LLFloaterIMContainer::removeConversationListItem(const LLUUID& uuid, bool c
     // Don't let the focus fall IW, select and refocus on the first conversation in the list
     if (change_focus)
     {
-        setFocus(TRUE);
+        setFocus(true);
         if (new_selection)
         {
             if (mConversationsWidgets.size() == 1)
@@ -2250,7 +2250,7 @@ void LLFloaterIMContainer::openNearbyChat()
         if (nearby_chat)
         {
             reSelectConversation();
-            nearby_chat->setOpen(TRUE);
+            nearby_chat->setOpen(true);
         }
     }
 }
@@ -2310,27 +2310,27 @@ bool LLFloaterIMContainer::isScrolledOutOfSight(LLConversationViewSession* conve
     return !mConversationsRoot->getVisibleRect().overlaps(widget_rect);
 }
 
-BOOL LLFloaterIMContainer::handleKeyHere(KEY key, MASK mask )
+bool LLFloaterIMContainer::handleKeyHere(KEY key, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if(mask == MASK_ALT)
     {
         if (KEY_RETURN == key )
         {
             expandConversation();
-            handled = TRUE;
+            handled = true;
         }
 
         if ((KEY_DOWN == key ) || (KEY_RIGHT == key))
         {
             selectNextorPreviousConversation(true);
-            handled = TRUE;
+            handled = true;
         }
         if ((KEY_UP == key) || (KEY_LEFT == key))
         {
             selectNextorPreviousConversation(false);
-            handled = TRUE;
+            handled = true;
         }
     }
     return handled;
@@ -2358,11 +2358,11 @@ bool LLFloaterIMContainer::selectNextorPreviousConversation(bool select_next, bo
         {
             if(select_next)
             {
-                new_selection = mConversationsRoot->getNextFromChild(widget, FALSE);
+                new_selection = mConversationsRoot->getNextFromChild(widget, false);
             }
             else
             {
-                new_selection = mConversationsRoot->getPreviousFromChild(widget, FALSE);
+                new_selection = mConversationsRoot->getPreviousFromChild(widget, false);
             }
             if (new_selection)
             {
@@ -2403,12 +2403,12 @@ bool LLFloaterIMContainer::isParticipantListExpanded()
     return is_expanded;
 }
 
-// By default, if torn off session is currently frontmost, LLFloater::isFrontmost() will return FALSE, which can lead to some bugs
+// By default, if torn off session is currently frontmost, LLFloater::isFrontmost() will return false, which can lead to some bugs
 // So LLFloater::isFrontmost() is overriden here to check both selected session and the IM floater itself
 // Exclude "Nearby Chat" session from the check, as "Nearby Chat" window and "Conversations" floater can be brought
 // to front independently
 /*virtual*/
-BOOL LLFloaterIMContainer::isFrontmost()
+bool LLFloaterIMContainer::isFrontmost()
 {
     LLFloaterIMSessionTab* selected_session = LLFloaterIMSessionTab::getConversation(mSelectedSession);
     LLFloaterIMNearbyChat* nearby_chat = LLFloaterReg::findTypedInstance<LLFloaterIMNearbyChat>("nearby_chat");
diff --git a/indra/newview/llfloaterimcontainer.h b/indra/newview/llfloaterimcontainer.h
index 71fe2bd204..e11445d779 100644
--- a/indra/newview/llfloaterimcontainer.h
+++ b/indra/newview/llfloaterimcontainer.h
@@ -56,25 +56,25 @@ public:
     LLFloaterIMContainer(const LLSD& seed, const Params& params = getDefaultParams());
     virtual ~LLFloaterIMContainer();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
     /*virtual*/ void draw();
-    /*virtual*/ void setMinimized(BOOL b);
-    /*virtual*/ void setVisible(BOOL visible);
-    /*virtual*/ void setVisibleAndFrontmost(BOOL take_focus=TRUE, const LLSD& key = LLSD());
+    /*virtual*/ void setMinimized(bool b);
+    /*virtual*/ void setVisible(bool visible);
+    /*virtual*/ void setVisibleAndFrontmost(bool take_focus=true, const LLSD& key = LLSD());
     /*virtual*/ void updateResizeLimits();
     /*virtual*/ void handleReshape(const LLRect& rect, bool by_user);
 
     void onCloseFloater(LLUUID& id);
 
     /*virtual*/ void addFloater(LLFloater* floaterp,
-                                BOOL select_added_floater,
+                                bool select_added_floater,
                                 LLTabContainer::eInsertionPoint insertion_point = LLTabContainer::END);
     void returnFloaterToHost();
     void showConversation(const LLUUID& session_id);
     void selectConversation(const LLUUID& session_id);
     void selectNextConversationByID(const LLUUID& session_id);
-    BOOL selectConversationPair(const LLUUID& session_id, bool select_widget, bool focus_floater = true);
+    bool selectConversationPair(const LLUUID& session_id, bool select_widget, bool focus_floater = true);
     void clearAllFlashStates();
     bool selectAdjacentConversation(bool focus_selected);
     bool selectNextorPreviousConversation(bool select_next, bool focus_selected = true);
@@ -83,7 +83,6 @@ public:
     /*virtual*/ void tabClose();
     void showStub(bool visible);
 
-    static LLFloater* getCurrentVoiceFloater();
     static LLFloaterIMContainer* findInstance();
     static LLFloaterIMContainer* getInstance();
 
@@ -97,7 +96,7 @@ public:
     static void idle(void* user_data);
 
     // LLIMSessionObserver observe triggers
-    /*virtual*/ void sessionAdded(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id, BOOL has_offline_msg);
+    /*virtual*/ void sessionAdded(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id, bool has_offline_msg);
     /*virtual*/ void sessionActivated(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id);
     /*virtual*/ void sessionVoiceOrIMStarted(const LLUUID& session_id);
     /*virtual*/ void sessionRemoved(const LLUUID& session_id);
@@ -116,11 +115,11 @@ public:
     void doToParticipants(const std::string& item, uuid_vec_t& selectedIDS);
 
     void assignResizeLimits();
-    virtual BOOL handleKeyHere(KEY key, MASK mask );
+    virtual bool handleKeyHere(KEY key, MASK mask );
     /*virtual*/ void closeFloater(bool app_quitting = false);
     void closeAllConversations();
     void closeSelectedConversations(const uuid_vec_t& ids);
-    /*virtual*/ BOOL isFrontmost();
+    /*virtual*/ bool isFrontmost();
 
 
 private:
@@ -147,7 +146,7 @@ private:
     void onAddButtonClicked();
     void onAvatarPicked(const uuid_vec_t& ids);
 
-    BOOL isActionChecked(const LLSD& userdata);
+    bool isActionChecked(const LLSD& userdata);
     void onCustomAction (const LLSD& userdata);
     void setSortOrderSessions(const LLConversationFilter::ESortOrderType order);
     void setSortOrderParticipants(const LLConversationFilter::ESortOrderType order);
@@ -213,7 +212,7 @@ public:
     void highlightConversationItemWidget(const LLUUID& session_id, bool is_highlighted);
     bool isScrolledOutOfSight(LLConversationViewSession* conversation_item_widget);
     boost::signals2::connection mMicroChangedSignal;
-    S32 getConversationListItemSize() { return mConversationsWidgets.size(); }
+    S32 getConversationListItemSize() { return static_cast<S32>(mConversationsWidgets.size()); }
     typedef std::list<LLFloater*> floater_list_t;
     void getDetachedConversationFloaters(floater_list_t& floaters);
 
diff --git a/indra/newview/llfloaterimnearbychat.cpp b/indra/newview/llfloaterimnearbychat.cpp
index e64f468cbe..28c651f0cd 100644
--- a/indra/newview/llfloaterimnearbychat.cpp
+++ b/indra/newview/llfloaterimnearbychat.cpp
@@ -71,9 +71,9 @@
 
 S32 LLFloaterIMNearbyChat::sLastSpecialChatChannel = 0;
 
-const S32 EXPANDED_HEIGHT = 266;
-const S32 COLLAPSED_HEIGHT = 60;
-const S32 EXPANDED_MIN_HEIGHT = 150;
+constexpr S32 EXPANDED_HEIGHT = 266;
+constexpr S32 COLLAPSED_HEIGHT = 60;
+constexpr S32 EXPANDED_MIN_HEIGHT = 150;
 
 // legacy callback glue
 void send_chat_from_viewer(const std::string& utf8_out_text, EChatType type, S32 channel);
@@ -120,10 +120,10 @@ LLFloaterIMNearbyChat* LLFloaterIMNearbyChat::buildFloater(const LLSD& key)
 }
 
 //virtual
-BOOL LLFloaterIMNearbyChat::postBuild()
+bool LLFloaterIMNearbyChat::postBuild()
 {
-    setIsSingleInstance(TRUE);
-    BOOL result = LLFloaterIMSessionTab::postBuild();
+    setIsSingleInstance(true);
+    bool result = LLFloaterIMSessionTab::postBuild();
 
     mInputEditor->setAutoreplaceCallback(boost::bind(&LLAutoReplace::autoreplaceCallback, LLAutoReplace::getInstance(), _1, _2, _3, _4, _5));
     mInputEditor->setCommitCallback(boost::bind(&LLFloaterIMNearbyChat::onChatBoxCommit, this));
@@ -154,7 +154,7 @@ void LLFloaterIMNearbyChat::closeHostedFloater()
     // If detached from conversations window close anyway
     if (!getHost())
     {
-        setVisible(FALSE);
+        setVisible(false);
     }
 
     // Should check how many conversations are ongoing. Select next to "Nearby Chat" in case there are some other besides.
@@ -270,7 +270,7 @@ void LLFloaterIMNearbyChat::removeScreenChat()
 }
 
 
-void LLFloaterIMNearbyChat::setVisible(BOOL visible)
+void LLFloaterIMNearbyChat::setVisible(bool visible)
 {
     LLFloaterIMSessionTab::setVisible(visible);
 
@@ -281,7 +281,7 @@ void LLFloaterIMNearbyChat::setVisible(BOOL visible)
 }
 
 
-void LLFloaterIMNearbyChat::setVisibleAndFrontmost(BOOL take_focus, const LLSD& key)
+void LLFloaterIMNearbyChat::setVisibleAndFrontmost(bool take_focus, const LLSD& key)
 {
     LLFloaterIMSessionTab::setVisibleAndFrontmost(take_focus, key);
 
@@ -382,7 +382,7 @@ void LLFloaterIMNearbyChat::showHistory()
     }
     else
     {
-        LLFloaterIMContainer::getInstance()->setFocus(TRUE);
+        LLFloaterIMContainer::getInstance()->setFocus(true);
     }
     setResizeLimits(getMinWidth(), EXPANDED_MIN_HEIGHT);
 }
@@ -393,21 +393,21 @@ std::string LLFloaterIMNearbyChat::getCurrentChat()
 }
 
 // virtual
-BOOL LLFloaterIMNearbyChat::handleKeyHere( KEY key, MASK mask )
+bool LLFloaterIMNearbyChat::handleKeyHere( KEY key, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if( KEY_RETURN == key && mask == MASK_CONTROL)
     {
         // shout
         sendChat(CHAT_TYPE_SHOUT);
-        handled = TRUE;
+        handled = true;
     }
     else if (KEY_RETURN == key && mask == MASK_SHIFT)
     {
         // whisper
         sendChat(CHAT_TYPE_WHISPER);
-        handled = TRUE;
+        handled = true;
     }
 
 
@@ -417,21 +417,21 @@ BOOL LLFloaterIMNearbyChat::handleKeyHere( KEY key, MASK mask )
         if ((KEY_UP == key) || (KEY_LEFT == key))
         {
             floater_container->selectNextorPreviousConversation(false);
-            handled = TRUE;
+            handled = true;
         }
         if ((KEY_DOWN == key ) || (KEY_RIGHT == key))
         {
             floater_container->selectNextorPreviousConversation(true);
-            handled = TRUE;
+            handled = true;
         }
     }
 
     return handled;
 }
 
-BOOL LLFloaterIMNearbyChat::matchChatTypeTrigger(const std::string& in_str, std::string* out_str)
+bool LLFloaterIMNearbyChat::matchChatTypeTrigger(const std::string& in_str, std::string* out_str)
 {
-    U32 in_len = in_str.length();
+    auto in_len = in_str.length();
     S32 cnt = sizeof(sChatTypeTriggers) / sizeof(*sChatTypeTriggers);
 
     bool string_was_found = false;
@@ -470,7 +470,7 @@ void LLFloaterIMNearbyChat::onChatBoxKeystroke()
     // to eat trailing spaces that might be part of a gesture.
     LLWStringUtil::trimHead(raw_text);
 
-    S32 length = raw_text.length();
+    auto length = raw_text.length();
 
     if( (length > 0) && (raw_text[0] != '/') )  // forward slash is used for escape (eg. emote) sequences
     {
@@ -517,7 +517,7 @@ void LLFloaterIMNearbyChat::onChatBoxKeystroke()
                 mInputEditor->setText(utf8_trigger + rest_of_match); // keep original capitalization for user-entered part
                 // Select to end of line, starting from the character
                 // after the last one the user typed.
-                mInputEditor->selectByCursorPosition(utf8_out_str.size()-rest_of_match.size(),utf8_out_str.size());
+                mInputEditor->selectByCursorPosition(static_cast<S32>(utf8_out_str.size() - rest_of_match.size()), static_cast<S32>(utf8_out_str.size()));
             }
 
         }
@@ -549,7 +549,7 @@ void LLFloaterIMNearbyChat::onChatBoxFocusReceived()
 
 EChatType LLFloaterIMNearbyChat::processChatTypeTriggers(EChatType type, std::string &str)
 {
-    U32 length = str.length();
+    auto length = str.length();
     S32 cnt = sizeof(sChatTypeTriggers) / sizeof(*sChatTypeTriggers);
 
     for (S32 n = 0; n < cnt; n++)
@@ -560,7 +560,7 @@ EChatType LLFloaterIMNearbyChat::processChatTypeTriggers(EChatType type, std::st
 
             if (!LLStringUtil::compareInsensitive(trigger, sChatTypeTriggers[n].name))
             {
-                U32 trigger_length = sChatTypeTriggers[n].name.length();
+                auto trigger_length = sChatTypeTriggers[n].name.length();
 
                 // It's to remove space after trigger name
                 if (length > trigger_length && str[trigger_length] == ' ')
@@ -682,8 +682,8 @@ void LLFloaterIMNearbyChat::displaySpeakingIndicator()
     LLUUID id;
 
     id.setNull();
-    mSpeakerMgr->update(FALSE);
-    mSpeakerMgr->getSpeakerList(&speaker_list, FALSE);
+    mSpeakerMgr->update(false);
+    mSpeakerMgr->getSpeakerList(&speaker_list, false);
 
     for (LLSpeakerMgr::speaker_list_t::iterator i = speaker_list.begin(); i != speaker_list.end(); ++i)
     {
@@ -696,12 +696,12 @@ void LLFloaterIMNearbyChat::displaySpeakingIndicator()
     }
 }
 
-void LLFloaterIMNearbyChat::sendChatFromViewer(const std::string &utf8text, EChatType type, BOOL animate)
+void LLFloaterIMNearbyChat::sendChatFromViewer(const std::string &utf8text, EChatType type, bool animate)
 {
     sendChatFromViewer(utf8str_to_wstring(utf8text), type, animate);
 }
 
-void LLFloaterIMNearbyChat::sendChatFromViewer(const LLWString &wtext, EChatType type, BOOL animate)
+void LLFloaterIMNearbyChat::sendChatFromViewer(const LLWString &wtext, EChatType type, bool animate)
 {
     // Look for "/20 foo" channel chats.
     S32 channel = 0;
@@ -754,8 +754,8 @@ void LLFloaterIMNearbyChat::sendChatFromViewer(const LLWString &wtext, EChatType
 bool LLFloaterIMNearbyChat::isWordsName(const std::string& name)
 {
     // checking to see if it's display name plus username in parentheses
-    S32 open_paren = name.find(" (", 0);
-    S32 close_paren = name.find(')', 0);
+    auto open_paren = name.find(" (", 0);
+    auto close_paren = name.find(')', 0);
 
     if (open_paren != std::string::npos &&
         close_paren == name.length()-1)
@@ -765,7 +765,7 @@ bool LLFloaterIMNearbyChat::isWordsName(const std::string& name)
     else
     {
         //checking for a single space
-        S32 pos = name.find(' ', 0);
+        auto pos = name.find(' ', 0);
         return std::string::npos != pos && name.rfind(' ', name.length()) == pos && 0 != pos && name.length()-1 != pos;
     }
 }
@@ -785,7 +785,7 @@ void LLFloaterIMNearbyChat::startChat(const char* line)
             nearby_chat->setMinimized(false);
         }
         nearby_chat->show();
-        nearby_chat->setFocus(TRUE);
+        nearby_chat->setFocus(true);
 
         if (line)
         {
@@ -804,7 +804,7 @@ void LLFloaterIMNearbyChat::stopChat()
     LLFloaterIMNearbyChat* nearby_chat = LLFloaterReg::getTypedInstance<LLFloaterIMNearbyChat>("nearby_chat");
     if (nearby_chat)
     {
-        nearby_chat->mInputEditor->setFocus(FALSE);
+        nearby_chat->mInputEditor->setFocus(false);
         gAgent.stopTyping();
     }
 }
diff --git a/indra/newview/llfloaterimnearbychat.h b/indra/newview/llfloaterimnearbychat.h
index 2c2e19e9ca..abcaa13442 100644
--- a/indra/newview/llfloaterimnearbychat.h
+++ b/indra/newview/llfloaterimnearbychat.h
@@ -50,11 +50,11 @@ public:
 
     static LLFloaterIMNearbyChat* buildFloater(const LLSD& key);
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
     /*virtual*/ void onClose(bool app_quitting);
-    /*virtual*/ void setVisible(BOOL visible);
-    /*virtual*/ void setVisibleAndFrontmost(BOOL take_focus=TRUE, const LLSD& key = LLSD());
+    /*virtual*/ void setVisible(bool visible);
+    /*virtual*/ void setVisibleAndFrontmost(bool take_focus=true, const LLSD& key = LLSD());
     /*virtual*/ void closeHostedFloater();
 
     void loadHistory();
@@ -70,22 +70,22 @@ public:
     LLChatEntry* getChatBox() { return mInputEditor; }
 
     std::string getCurrentChat();
-    S32 getMessageArchiveLength() {return mMessageArchive.size();}
+    S32 getMessageArchiveLength() { return static_cast<S32>(mMessageArchive.size()); }
 
-    virtual BOOL handleKeyHere( KEY key, MASK mask );
+    virtual bool handleKeyHere( KEY key, MASK mask );
 
     static void startChat(const char* line);
     static void stopChat();
 
-    static void sendChatFromViewer(const std::string &utf8text, EChatType type, BOOL animate);
-    static void sendChatFromViewer(const LLWString &wtext, EChatType type, BOOL animate);
+    static void sendChatFromViewer(const std::string &utf8text, EChatType type, bool animate);
+    static void sendChatFromViewer(const LLWString &wtext, EChatType type, bool animate);
 
     static bool isWordsName(const std::string& name);
 
     void showHistory();
 
 protected:
-    static BOOL matchChatTypeTrigger(const std::string& in_str, std::string* out_str);
+    static bool matchChatTypeTrigger(const std::string& in_str, std::string* out_str);
     void onChatBoxKeystroke();
     void onChatBoxFocusLost();
     void onChatBoxFocusReceived();
diff --git a/indra/newview/llfloaterimnearbychathandler.cpp b/indra/newview/llfloaterimnearbychathandler.cpp
index 77ceea19af..ef7ec9e950 100644
--- a/indra/newview/llfloaterimnearbychathandler.cpp
+++ b/indra/newview/llfloaterimnearbychathandler.cpp
@@ -123,7 +123,7 @@ protected:
     {
         if (!toast) return;
         LL_DEBUGS("NearbyChat") << "Pooling toast" << LL_ENDL;
-        toast->setVisible(FALSE);
+        toast->setVisible(false);
         toast->stopTimer();
         toast->setIsHidden(true);
 
@@ -282,7 +282,7 @@ bool    LLFloaterIMNearbyChatScreenChannel::createPoolToast()
 void LLFloaterIMNearbyChatScreenChannel::addChat(LLSD& chat)
 {
     //look in pool. if there is any message
-    if(mStopProcessing)
+    if (mStopProcessing)
         return;
 
     if (mFloaterSnapRegion == NULL)
@@ -297,7 +297,7 @@ void LLFloaterIMNearbyChatScreenChannel::addChat(LLSD& chat)
     find last toast and check ID
     */
 
-    if(m_active_toasts.size())
+    if (m_active_toasts.size())
     {
         LLUUID fromID = chat["from_id"].asUUID();       // agent id or object id
         std::string from = chat["from"].asString();
@@ -306,7 +306,7 @@ void LLFloaterIMNearbyChatScreenChannel::addChat(LLSD& chat)
         {
             LLFloaterIMNearbyChatToastPanel* panel = dynamic_cast<LLFloaterIMNearbyChatToastPanel*>(toast->getPanel());
 
-            if(panel && panel->messageID() == fromID && panel->getFromName() == from && panel->canAddText())
+            if (panel && panel->messageID() == fromID && panel->getFromName() == from && panel->canAddText())
             {
                 panel->addMessage(chat);
                 toast->reshapeToPanel();
@@ -320,7 +320,7 @@ void LLFloaterIMNearbyChatScreenChannel::addChat(LLSD& chat)
 
 
 
-    if(m_toast_pool.empty())
+    if (m_toast_pool.empty())
     {
         //"pool" is empty - create one more panel
         LL_DEBUGS("NearbyChat") << "Empty pool" << LL_ENDL;
@@ -332,15 +332,14 @@ void LLFloaterIMNearbyChatScreenChannel::addChat(LLSD& chat)
 
     int chat_type = chat["chat_type"].asInteger();
 
-    if( ((EChatType)chat_type == CHAT_TYPE_DEBUG_MSG))
+    if (chat_type == CHAT_TYPE_DEBUG_MSG)
     {
-        if(gSavedSettings.getBOOL("ShowScriptErrors") == FALSE)
+        if (!gSavedSettings.getBOOL("ShowScriptErrors"))
             return;
-        if(gSavedSettings.getS32("ShowScriptErrorsLocation")== 1)
+        if (gSavedSettings.getS32("ShowScriptErrorsLocation") == 1)
             return;
     }
 
-
     //take 1st element from pool, (re)initialize it, put it in active toasts
 
     LL_DEBUGS("NearbyChat") << "Getting toast from pool" << LL_ENDL;
@@ -350,7 +349,7 @@ void LLFloaterIMNearbyChatScreenChannel::addChat(LLSD& chat)
 
 
     LLFloaterIMNearbyChatToastPanel* panel = dynamic_cast<LLFloaterIMNearbyChatToastPanel*>(toast->getPanel());
-    if(!panel)
+    if (!panel)
         return;
     panel->init(chat);
 
@@ -442,7 +441,7 @@ void LLFloaterIMNearbyChatScreenChannel::arrangeToasts()
         if (toast)
     {
         toast->setIsHidden(false);
-        toast->setVisible(TRUE);
+        toast->setVisible(true);
         }
     }
 
@@ -487,11 +486,11 @@ void LLFloaterIMNearbyChatHandler::initChannel()
 void LLFloaterIMNearbyChatHandler::processChat(const LLChat& chat_msg,
                                       const LLSD &args)
 {
-    if(chat_msg.mMuted == TRUE)
+    if (chat_msg.mMuted)
         return;
 
-    if(chat_msg.mText.empty())
-        return;//don't process empty messages
+    if (chat_msg.mText.empty())
+        return; // don't process empty messages
 
     LLFloaterReg::getInstance("im_container");
     LLFloaterIMNearbyChat* nearby_chat = LLFloaterReg::getTypedInstance<LLFloaterIMNearbyChat>("nearby_chat");
@@ -522,9 +521,10 @@ void LLFloaterIMNearbyChatHandler::processChat(const LLChat& chat_msg,
     // errors in separate window.
     if (chat_msg.mChatType == CHAT_TYPE_DEBUG_MSG)
     {
-        if (LLFloater::isQuitRequested()) return;
+        if (LLFloater::isQuitRequested())
+            return;
 
-        if(gSavedSettings.getBOOL("ShowScriptErrors") == FALSE)
+        if (!gSavedSettings.getBOOL("ShowScriptErrors"))
             return;
 
         // don't process debug messages from not owned objects, see EXT-7762
@@ -533,7 +533,7 @@ void LLFloaterIMNearbyChatHandler::processChat(const LLChat& chat_msg,
             return;
         }
 
-        if (gSavedSettings.getS32("ShowScriptErrorsLocation")== 1)// show error in window //("ScriptErrorsAsChat"))
+        if (gSavedSettings.getS32("ShowScriptErrorsLocation") == 1)// show error in window //("ScriptErrorsAsChat"))
         {
 
             LLColor4 txt_color;
@@ -550,7 +550,7 @@ void LLFloaterIMNearbyChatHandler::processChat(const LLChat& chat_msg,
 
     nearby_chat->addMessage(chat_msg, true, args);
 
-    if(chat_msg.mSourceType == CHAT_SOURCE_AGENT
+    if (chat_msg.mSourceType == CHAT_SOURCE_AGENT
         && chat_msg.mFromID.notNull()
         && chat_msg.mFromID != gAgentID)
     {
diff --git a/indra/newview/llfloaterimnearbychatlistener.cpp b/indra/newview/llfloaterimnearbychatlistener.cpp
index 616acf0eae..43173d3680 100644
--- a/indra/newview/llfloaterimnearbychatlistener.cpp
+++ b/indra/newview/llfloaterimnearbychatlistener.cpp
@@ -95,6 +95,6 @@ void LLFloaterIMNearbyChatListener::sendChat(LLSD const & chat_data) const
     }
 
     // Send it as if it was typed in
-    mChatbar.sendChatFromViewer(chat_to_send, type_o_chat, ((BOOL)(channel == 0)) && gSavedSettings.getBOOL("PlayChatAnim"));
+    mChatbar.sendChatFromViewer(chat_to_send, type_o_chat, ((bool)(channel == 0)) && gSavedSettings.getBOOL("PlayChatAnim"));
 }
 
diff --git a/indra/newview/llfloaterimsession.cpp b/indra/newview/llfloaterimsession.cpp
index b782515c14..5dd78fe1db 100644
--- a/indra/newview/llfloaterimsession.cpp
+++ b/indra/newview/llfloaterimsession.cpp
@@ -109,7 +109,7 @@ void LLFloaterIMSession::refresh()
         if (mMeTypingTimer.getElapsedTimeF32() > ME_TYPING_TIMEOUT && false == mShouldSendTypingState)
         {
             LL_DEBUGS("TypingMsgs") << "Send additional Start Typing packet" << LL_ENDL;
-            LLIMModel::instance().sendTypingState(mSessionID, mOtherParticipantUUID, TRUE);
+            LLIMModel::instance().sendTypingState(mSessionID, mOtherParticipantUUID, true);
             mMeTypingTimer.reset();
         }
 
@@ -333,7 +333,7 @@ void LLFloaterIMSession::initIMFloater()
     // Disable input editor if session cannot accept text
     if ( mSession && !mSession->mTextIMPossible )
     {
-        mInputEditor->setEnabled(FALSE);
+        mInputEditor->setEnabled(false);
         mInputEditor->setLabel(LLTrans::getString("IM_unavailable_text_label"));
     }
 
@@ -345,9 +345,9 @@ void LLFloaterIMSession::initIMFloater()
 }
 
 //virtual
-BOOL LLFloaterIMSession::postBuild()
+bool LLFloaterIMSession::postBuild()
 {
-    BOOL result = LLFloaterIMSessionTab::postBuild();
+    bool result = LLFloaterIMSessionTab::postBuild();
 
     mInputEditor->setMaxTextLength(1023);
     mInputEditor->setAutoreplaceCallback(boost::bind(&LLAutoReplace::autoreplaceCallback, LLAutoReplace::getInstance(), _1, _2, _3, _4, _5));
@@ -380,7 +380,7 @@ void LLFloaterIMSession::onAddButtonClicked()
 {
     LLView * button = findChild<LLView>("toolbar_panel")->findChild<LLButton>("add_btn");
     LLFloater* root_floater = gFloaterView->getParentFloater(this);
-    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLFloaterIMSession::addSessionParticipants, this, _1), TRUE, TRUE, FALSE, root_floater->getName(), button);
+    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLFloaterIMSession::addSessionParticipants, this, _1), true, true, false, root_floater->getName(), button);
     if (!picker)
     {
         return;
@@ -615,13 +615,13 @@ LLFloaterIMSession* LLFloaterIMSession::show(const LLUUID& session_id)
         LLTabContainer::eInsertionPoint i_pt = LLTabContainer::END;
         if (floater_container)
         {
-            floater_container->addFloater(floater, TRUE, i_pt);
+            floater_container->addFloater(floater, true, i_pt);
         }
     }
 
     floater->openFloater(floater->getKey());
 
-    floater->setVisible(TRUE);
+    floater->setVisible(true);
 
     return floater;
 }
@@ -679,7 +679,7 @@ void LLFloaterIMSession::setDocked(bool docked, bool pop_on_undock)
     }
 }
 
-void LLFloaterIMSession::setMinimized(BOOL b)
+void LLFloaterIMSession::setMinimized(bool b)
 {
     bool wasMinimized = isMinimized();
     LLFloaterIMSessionTab::setMinimized(b);
@@ -696,7 +696,7 @@ void LLFloaterIMSession::setMinimized(BOOL b)
     }
 }
 
-void LLFloaterIMSession::setVisible(BOOL visible)
+void LLFloaterIMSession::setVisible(bool visible)
 {
     LLNotificationsUI::LLScreenChannel* channel = static_cast<LLNotificationsUI::LLScreenChannel*>
         (LLNotificationsUI::LLChannelManager::getInstance()->
@@ -732,7 +732,7 @@ void LLFloaterIMSession::setVisible(BOOL visible)
 
 }
 
-BOOL LLFloaterIMSession::getVisible()
+bool LLFloaterIMSession::getVisible()
 {
     bool visible;
 
@@ -751,7 +751,7 @@ BOOL LLFloaterIMSession::getVisible()
         }
         else
         {
-        // getVisible() returns TRUE when Tabbed IM window is minimized.
+        // getVisible() returns true when Tabbed IM window is minimized.
             visible = is_active && !im_container->isMinimized()
                         && im_container->getVisible();
         }
@@ -764,7 +764,7 @@ BOOL LLFloaterIMSession::getVisible()
     return visible;
 }
 
-void LLFloaterIMSession::setFocus(BOOL focus)
+void LLFloaterIMSession::setFocus(bool focus)
 {
     LLFloaterIMSessionTab::setFocus(focus);
 
@@ -792,8 +792,8 @@ bool LLFloaterIMSession::toggle(const LLUUID& session_id)
         }
         else if(floater && ((!floater->isDocked() || floater->getVisible()) && !floater->hasFocus()))
         {
-            floater->setVisible(TRUE);
-            floater->setFocus(TRUE);
+            floater->setVisible(true);
+            floater->setFocus(true);
             return true;
         }
     }
@@ -999,7 +999,7 @@ void LLFloaterIMSession::setTyping(bool typing)
             if ( mTypingTimer.getElapsedTimeF32() > 1.f )
         {
                 // Still typing, send 'start typing' notification
-                LLIMModel::instance().sendTypingState(mSessionID, mOtherParticipantUUID, TRUE);
+                LLIMModel::instance().sendTypingState(mSessionID, mOtherParticipantUUID, true);
                 mShouldSendTypingState = false;
                 mMeTypingTimer.reset();
             }
@@ -1007,7 +1007,7 @@ void LLFloaterIMSession::setTyping(bool typing)
         else
         {
             // Send 'stop typing' notification immediately
-            LLIMModel::instance().sendTypingState(mSessionID, mOtherParticipantUUID, FALSE);
+            LLIMModel::instance().sendTypingState(mSessionID, mOtherParticipantUUID, false);
                     mShouldSendTypingState = false;
         }
     }
@@ -1017,12 +1017,12 @@ void LLFloaterIMSession::setTyping(bool typing)
         LLIMSpeakerMgr* speaker_mgr = LLIMModel::getInstance()->getSpeakerManager(mSessionID);
         if (speaker_mgr)
         {
-            speaker_mgr->setSpeakerTyping(gAgent.getID(), FALSE);
+            speaker_mgr->setSpeakerTyping(gAgent.getID(), false);
         }
     }
 }
 
-void LLFloaterIMSession::processIMTyping(const LLUUID& from_id, BOOL typing)
+void LLFloaterIMSession::processIMTyping(const LLUUID& from_id, bool typing)
 {
     LL_DEBUGS("TypingMsgs") << "typing=" << typing << LL_ENDL;
     if ( typing )
@@ -1063,7 +1063,7 @@ void LLFloaterIMSession::processAgentListUpdates(const LLSD& body)
                 // process the moderator mutes
                 if (agent_id == gAgentID && agent_data.has("info") && agent_data["info"].has("mutes"))
                 {
-                    BOOL moderator_muted_text = agent_data["info"]["mutes"]["text"].asBoolean();
+                    bool moderator_muted_text = agent_data["info"]["mutes"]["text"].asBoolean();
                     mInputEditor->setEnabled(!moderator_muted_text);
                     std::string label;
                     if (moderator_muted_text)
@@ -1108,7 +1108,7 @@ void LLFloaterIMSession::processSessionUpdate(const LLSD& session_update)
     if ( false && session_update.has("moderated_mode") &&
          session_update["moderated_mode"].has("voice") )
     {
-        BOOL voice_moderated = session_update["moderated_mode"]["voice"];
+        bool voice_moderated = session_update["moderated_mode"]["voice"];
         const std::string session_label = LLIMModel::instance().getName(mSessionID);
 
         if (voice_moderated)
@@ -1141,7 +1141,7 @@ void LLFloaterIMSession::draw()
 }
 
 // virtual
-BOOL LLFloaterIMSession::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLFloaterIMSession::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                     EDragAndDropType cargo_type,
                                     void* cargo_data,
                                     EAcceptance* accept,
@@ -1164,7 +1164,7 @@ BOOL LLFloaterIMSession::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
                 cargo_type, cargo_data, accept);
     }
 
-    return TRUE;
+    return true;
 }
 
 bool LLFloaterIMSession::dropPerson(LLUUID* person_id, bool drop)
@@ -1187,21 +1187,21 @@ bool LLFloaterIMSession::dropPerson(LLUUID* person_id, bool drop)
     return res;
 }
 
-BOOL LLFloaterIMSession::isInviteAllowed() const
+bool LLFloaterIMSession::isInviteAllowed() const
 {
     return ( (IM_SESSION_CONFERENCE_START == mDialog)
              || (IM_SESSION_INVITE == mDialog && !gAgent.isInGroup(mSessionID))
              || mIsP2PChat);
 }
 
-BOOL LLFloaterIMSession::inviteToSession(const uuid_vec_t& ids)
+bool LLFloaterIMSession::inviteToSession(const uuid_vec_t& ids)
 {
     LLViewerRegion* region = gAgent.getRegion();
     bool is_region_exist = region != NULL;
 
     if (is_region_exist)
     {
-        S32 count = ids.size();
+        auto count = ids.size();
 
         if( isInviteAllowed() && (count > 0) )
         {
@@ -1211,7 +1211,7 @@ BOOL LLFloaterIMSession::inviteToSession(const uuid_vec_t& ids)
 
             LLSD data;
             data["params"] = LLSD::emptyArray();
-            for (int i = 0; i < count; i++)
+            for (size_t i = 0; i < count; i++)
             {
                 data["params"].append(ids[i]);
             }
@@ -1275,7 +1275,7 @@ Note: OTHER_TYPING_TIMEOUT must be > ME_TYPING_TIMEOUT for proper operation of t
         LLIMSpeakerMgr* speaker_mgr = LLIMModel::getInstance()->getSpeakerManager(mSessionID);
         if ( speaker_mgr )
         {
-            speaker_mgr->setSpeakerTyping(from_id, TRUE);
+            speaker_mgr->setSpeakerTyping(from_id, true);
         }
     }
 }
@@ -1292,7 +1292,7 @@ void LLFloaterIMSession::removeTypingIndicator(const LLUUID& from_id)
             LLIMSpeakerMgr* speaker_mgr = LLIMModel::getInstance()->getSpeakerManager(mSessionID);
             if (speaker_mgr)
             {
-                speaker_mgr->setSpeakerTyping(from_id, FALSE);
+                speaker_mgr->setSpeakerTyping(from_id, false);
             }
         }
     }
diff --git a/indra/newview/llfloaterimsession.h b/indra/newview/llfloaterimsession.h
index 5180b0cee1..7bc54cf3da 100644
--- a/indra/newview/llfloaterimsession.h
+++ b/indra/newview/llfloaterimsession.h
@@ -64,15 +64,15 @@ public:
     void initIMFloater();
 
     // LLView overrides
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void setMinimized(BOOL b);
-    /*virtual*/ void setVisible(BOOL visible);
-    /*virtual*/ BOOL getVisible();
-    /*virtual*/ void setFocus(BOOL focus);
+    /*virtual*/ bool postBuild();
+    /*virtual*/ void setMinimized(bool b);
+    /*virtual*/ void setVisible(bool visible);
+    /*virtual*/ bool getVisible();
+    /*virtual*/ void setFocus(bool focus);
     // Check typing timeout timer.
 
     /*virtual*/ void draw();
-    /*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    /*virtual*/ bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
         EDragAndDropType cargo_type,
         void* cargo_data,
         EAcceptance* accept,
@@ -121,7 +121,7 @@ public:
             const LLVoiceChannel::EState& old_state,
             const LLVoiceChannel::EState& new_state);
 
-    void processIMTyping(const LLUUID& from_id, BOOL typing);
+    void processIMTyping(const LLUUID& from_id, bool typing);
     void processAgentListUpdates(const LLSD& body);
     void processSessionUpdate(const LLSD& session_update);
 
@@ -147,8 +147,8 @@ private:
 
     bool dropPerson(LLUUID* person_id, bool drop);
 
-    BOOL isInviteAllowed() const;
-    BOOL inviteToSession(const uuid_vec_t& agent_ids);
+    bool isInviteAllowed() const;
+    bool inviteToSession(const uuid_vec_t& agent_ids);
     static void onInputEditorFocusReceived( LLFocusableElement* caller,void* userdata );
     static void onInputEditorFocusLost(LLFocusableElement* caller, void* userdata);
     static void onInputEditorKeystroke(LLTextEditor* caller, void* userdata);
diff --git a/indra/newview/llfloaterimsessiontab.cpp b/indra/newview/llfloaterimsessiontab.cpp
index 0ed84c381f..a0b56b14f0 100644
--- a/indra/newview/llfloaterimsessiontab.cpp
+++ b/indra/newview/llfloaterimsessiontab.cpp
@@ -78,7 +78,7 @@ LLFloaterIMSessionTab::LLFloaterIMSessionTab(const LLSD& session_id)
     mInputPanels(NULL),
     mChatLayoutPanelHeight(0)
 {
-    setAutoFocus(FALSE);
+    setAutoFocus(false);
     mSession = LLIMModel::getInstance()->findIMSession(mSessionID);
 
     mCommitCallbackRegistrar.add("IMSession.Menu.Action",
@@ -161,7 +161,7 @@ LLFloaterIMSessionTab* LLFloaterIMSessionTab::getConversation(const LLUUID& uuid
 };
 
 // virtual
-void LLFloaterIMSessionTab::setVisible(BOOL visible)
+void LLFloaterIMSessionTab::setVisible(bool visible)
 {
     if (visible && !mHasVisibleBeenInitialized)
     {
@@ -184,7 +184,7 @@ void LLFloaterIMSessionTab::setVisible(BOOL visible)
 }
 
 // virtual
-void LLFloaterIMSessionTab::setFocus(BOOL focus)
+void LLFloaterIMSessionTab::setFocus(bool focus)
 {
     super::setFocus(focus);
 
@@ -195,7 +195,7 @@ void LLFloaterIMSessionTab::setFocus(BOOL focus)
 
         if (mInputEditor)
         {
-            mInputEditor->setFocus(TRUE);
+            mInputEditor->setFocus(true);
         }
     }
 }
@@ -258,9 +258,9 @@ void LLFloaterIMSessionTab::assignResizeLimits()
 }
 
 // virtual
-BOOL LLFloaterIMSessionTab::postBuild()
+bool LLFloaterIMSessionTab::postBuild()
 {
-    BOOL result;
+    bool result;
 
     mBodyStack = getChild<LLLayoutStack>("main_stack");
     mParticipantListAndHistoryStack = getChild<LLLayoutStack>("im_panels");
@@ -329,8 +329,8 @@ BOOL LLFloaterIMSessionTab::postBuild()
 
     mInputEditor->setTextExpandedCallback(boost::bind(&LLFloaterIMSessionTab::reshapeChatLayoutPanel, this));
     mInputEditor->setMouseUpCallback(boost::bind(&LLFloaterIMSessionTab::onInputEditorClicked, this));
-    mInputEditor->setCommitOnFocusLost( FALSE );
-    mInputEditor->setPassDelete(TRUE);
+    mInputEditor->setCommitOnFocusLost( false );
+    mInputEditor->setPassDelete(true);
     mInputEditor->setFont(LLViewerChat::getChatFont());
 
     mChatLayoutPanelHeight = mChatLayoutPanel->getRect().getHeight();
@@ -477,19 +477,19 @@ void LLFloaterIMSessionTab::onInputEditorClicked()
 
 void LLFloaterIMSessionTab::onEmojiRecentPanelToggleBtnClicked()
 {
-    BOOL show = mEmojiRecentPanel->getVisible() ? FALSE : TRUE;
+    bool show = !mEmojiRecentPanel->getVisible();
     if (show)
     {
         initEmojiRecentPanel();
     }
 
     mEmojiRecentPanel->setVisible(show);
-    mInputEditor->setFocus(TRUE);
+    mInputEditor->setFocus(true);
 }
 
 void LLFloaterIMSessionTab::onEmojiPickerShowBtnClicked()
 {
-    mInputEditor->setFocus(TRUE);
+    mInputEditor->setFocus(true);
     mInputEditor->showEmojiHelper();
 }
 
@@ -498,8 +498,8 @@ void LLFloaterIMSessionTab::initEmojiRecentPanel()
     std::list<llwchar>& recentlyUsed = LLFloaterEmojiPicker::getRecentlyUsed();
     if (recentlyUsed.empty())
     {
-        mEmojiRecentEmptyText->setVisible(TRUE);
-        mEmojiRecentContainer->setVisible(FALSE);
+        mEmojiRecentEmptyText->setVisible(true);
+        mEmojiRecentContainer->setVisible(false);
     }
     else
     {
@@ -509,8 +509,8 @@ void LLFloaterIMSessionTab::initEmojiRecentPanel()
             emojis += emoji;
         }
         mEmojiRecentIconsCtrl->setEmojis(emojis);
-        mEmojiRecentEmptyText->setVisible(FALSE);
-        mEmojiRecentContainer->setVisible(TRUE);
+        mEmojiRecentEmptyText->setVisible(false);
+        mEmojiRecentContainer->setVisible(true);
     }
 }
 
@@ -587,13 +587,13 @@ void LLFloaterIMSessionTab::appendMessage(const LLChat& chat, const LLSD& args)
     mChatHistory->appendMessage(chat, chat_args);
 }
 
-void LLFloaterIMSessionTab::updateUsedEmojis(LLWString text)
+void LLFloaterIMSessionTab::updateUsedEmojis(LLWStringView text)
 {
     LLEmojiDictionary* dictionary = LLEmojiDictionary::getInstance();
     llassert_always(dictionary);
 
     bool emojiSent = false;
-    for (llwchar& c : text)
+    for (const llwchar& c : text)
     {
         if (dictionary->isEmoji(c))
         {
@@ -674,7 +674,7 @@ void LLFloaterIMSessionTab::addConversationViewParticipant(LLConversationItem* p
         mConversationsWidgets[uuid] = participant_view;
         participant_view->addToFolder(mConversationsRoot);
         participant_view->addToSession(mSessionID);
-        participant_view->setVisible(TRUE);
+        participant_view->setVisible(true);
     }
 }
 
@@ -688,7 +688,7 @@ void LLFloaterIMSessionTab::removeConversationViewParticipant(const LLUUID& part
         {
             // This is the last pointer, remove participant from session
             // before participant gets deleted on destroyView.
-            // 
+            //
             // Floater (widget) and participant's view can simultaneously
             // co-own the model, in which case view is responsible for
             // the deletion and floater is free to clear and recreate
@@ -697,7 +697,7 @@ void LLFloaterIMSessionTab::removeConversationViewParticipant(const LLUUID& part
             // See "add_participant".
             //
             // Todo: If it keeps causing issues turn participants
-            // into LLPointers in the session 
+            // into LLPointers in the session
             LLParticipantList* session = getParticipantList();
             if (session)
             {
@@ -740,7 +740,7 @@ void LLFloaterIMSessionTab::refreshConversation()
         if (widget_it->second->getViewModelItem())
         {
             widget_it->second->refresh();
-            widget_it->second->setVisible(TRUE);
+            widget_it->second->setVisible(true);
         }
         ++widget_it;
     }
@@ -985,7 +985,7 @@ void LLFloaterIMSessionTab::forceReshape()
 
 void LLFloaterIMSessionTab::reshapeChatLayoutPanel()
 {
-    mChatLayoutPanel->reshape(mChatLayoutPanel->getRect().getWidth(), mInputEditor->getRect().getHeight() + mInputEditorPad, FALSE);
+    mChatLayoutPanel->reshape(mChatLayoutPanel->getRect().getWidth(), mInputEditor->getRect().getHeight() + mInputEditorPad, false);
 }
 
 // static
@@ -1146,7 +1146,7 @@ void LLFloaterIMSessionTab::onOpen(const LLSD& key)
 
     mInputButtonPanel->setVisible(isTornOff());
 
-    setFocus(TRUE);
+    setFocus(true);
 }
 
 
@@ -1178,8 +1178,7 @@ void LLFloaterIMSessionTab::onTearOffClicked()
 
 void LLFloaterIMSessionTab::updateGearBtn()
 {
-
-    BOOL prevVisibility = mGearBtn->getVisible();
+    bool prevVisibility = mGearBtn->getVisible();
     mGearBtn->setVisible(checkIfTornOff() && mIsP2PChat);
 
 
@@ -1324,9 +1323,9 @@ LLView* LLFloaterIMSessionTab::getChatHistory()
     return mChatHistory;
 }
 
-BOOL LLFloaterIMSessionTab::handleKeyHere(KEY key, MASK mask )
+bool LLFloaterIMSessionTab::handleKeyHere(KEY key, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if(mask == MASK_ALT)
     {
@@ -1334,17 +1333,17 @@ BOOL LLFloaterIMSessionTab::handleKeyHere(KEY key, MASK mask )
         if (KEY_RETURN == key && !isTornOff())
         {
             floater_container->expandConversation();
-            handled = TRUE;
+            handled = true;
         }
         if ((KEY_UP == key) || (KEY_LEFT == key))
         {
             floater_container->selectNextorPreviousConversation(false);
-            handled = TRUE;
+            handled = true;
         }
         if ((KEY_DOWN == key ) || (KEY_RIGHT == key))
         {
             floater_container->selectNextorPreviousConversation(true);
-            handled = TRUE;
+            handled = true;
         }
     }
     return handled;
diff --git a/indra/newview/llfloaterimsessiontab.h b/indra/newview/llfloaterimsessiontab.h
index 00b43f499b..0a8502cfc5 100644
--- a/indra/newview/llfloaterimsessiontab.h
+++ b/indra/newview/llfloaterimsessiontab.h
@@ -77,10 +77,10 @@ public:
 
     // LLFloater overrides
     /*virtual*/ void onOpen(const LLSD& key);
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void draw();
-    /*virtual*/ void setVisible(BOOL visible);
-    /*virtual*/ void setFocus(BOOL focus);
+    /*virtual*/ void setVisible(bool visible);
+    /*virtual*/ void setFocus(bool focus);
     /*virtual*/ void closeFloater(bool app_quitting = false);
 
     // Handle the left hand participant list widgets
@@ -97,7 +97,7 @@ public:
     virtual void updateMessages() {}
     LLConversationItem* getCurSelectedViewModelItem();
     void forceReshape();
-    virtual BOOL handleKeyHere( KEY key, MASK mask );
+    virtual bool handleKeyHere( KEY key, MASK mask );
     bool isMessagePaneExpanded(){return mMessagePaneExpanded;}
     void setMessagePaneExpanded(bool expanded){mMessagePaneExpanded = expanded;}
     void restoreFloater();
@@ -147,7 +147,7 @@ protected:
     std::string appendTime();
     void assignResizeLimits();
 
-    void updateUsedEmojis(LLWString text);
+    void updateUsedEmojis(LLWStringView text);
 
     S32  mFloaterExtraWidth;
 
diff --git a/indra/newview/llfloaterinspect.cpp b/indra/newview/llfloaterinspect.cpp
index 7190bccb81..4f993ca0e1 100644
--- a/indra/newview/llfloaterinspect.cpp
+++ b/indra/newview/llfloaterinspect.cpp
@@ -47,7 +47,7 @@
 
 LLFloaterInspect::LLFloaterInspect(const LLSD& key)
   : LLFloater(key),
-    mDirty(FALSE),
+    mDirty(false),
     mOwnerNameCacheConnection(),
     mCreatorNameCacheConnection()
 {
@@ -56,7 +56,7 @@ LLFloaterInspect::LLFloaterInspect(const LLSD& key)
     mCommitCallbackRegistrar.add("Inspect.SelectObject",    boost::bind(&LLFloaterInspect::onSelectObject, this));
 }
 
-BOOL LLFloaterInspect::postBuild()
+bool LLFloaterInspect::postBuild()
 {
     mObjectList = getChild<LLScrollListCtrl>("object_list");
 //  childSetAction("button owner",onClickOwnerProfile, this);
@@ -65,7 +65,7 @@ BOOL LLFloaterInspect::postBuild()
 
     refresh();
 
-    return TRUE;
+    return true;
 }
 
 LLFloaterInspect::~LLFloaterInspect(void)
@@ -89,13 +89,13 @@ LLFloaterInspect::~LLFloaterInspect(void)
     }
     else
     {
-        LLFloaterReg::showInstance("build", LLSD(), TRUE);
+        LLFloaterReg::showInstance("build", LLSD(), true);
     }
 }
 
 void LLFloaterInspect::onOpen(const LLSD& key)
 {
-    BOOL forcesel = LLSelectMgr::getInstance()->setForceSelection(TRUE);
+    bool forcesel = LLSelectMgr::getInstance()->setForceSelection(true);
     LLToolMgr::getInstance()->setTransientTool(LLToolCompInspect::getInstance());
     LLSelectMgr::getInstance()->setForceSelection(forcesel);    // restore previouis value
     mObjectSelection = LLSelectMgr::getInstance()->getSelection();
@@ -345,7 +345,7 @@ void LLFloaterInspect::draw()
     if (mDirty)
     {
         refresh();
-        mDirty = FALSE;
+        mDirty = false;
     }
 
     LLFloater::draw();
diff --git a/indra/newview/llfloaterinspect.h b/indra/newview/llfloaterinspect.h
index a18aba1155..961c6c8dc3 100644
--- a/indra/newview/llfloaterinspect.h
+++ b/indra/newview/llfloaterinspect.h
@@ -44,12 +44,12 @@ public:
 
 //  static void show(void* ignored = NULL);
     void onOpen(const LLSD& key);
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     void dirty();
     LLUUID getSelectedUUID();
     virtual void draw();
     virtual void refresh();
-//  static BOOL isVisible();
+//  static bool isVisible();
     virtual void onFocusReceived();
     void onClickCreatorProfile();
     void onClickOwnerProfile();
@@ -58,7 +58,7 @@ public:
     LLScrollListCtrl* mObjectList;
 protected:
     // protected members
-    void setDirty() { mDirty = TRUE; }
+    void setDirty() { mDirty = true; }
     bool mDirty;
 
 private:
diff --git a/indra/newview/llfloaterinventorysettings.cpp b/indra/newview/llfloaterinventorysettings.cpp
index 29d6e90a33..e5ee69f240 100644
--- a/indra/newview/llfloaterinventorysettings.cpp
+++ b/indra/newview/llfloaterinventorysettings.cpp
@@ -36,9 +36,9 @@ LLFloaterInventorySettings::LLFloaterInventorySettings(const LLSD& key)
 LLFloaterInventorySettings::~LLFloaterInventorySettings()
 {}
 
-BOOL LLFloaterInventorySettings::postBuild()
+bool LLFloaterInventorySettings::postBuild()
 {
     getChild<LLButton>("ok_btn")->setCommitCallback(boost::bind(&LLFloater::closeFloater, this, false));
-    return TRUE;
+    return true;
 }
 
diff --git a/indra/newview/llfloaterinventorysettings.h b/indra/newview/llfloaterinventorysettings.h
index 50304276c7..3fe3a001b9 100644
--- a/indra/newview/llfloaterinventorysettings.h
+++ b/indra/newview/llfloaterinventorysettings.h
@@ -35,7 +35,7 @@ class LLFloaterInventorySettings
     friend class LLFloaterReg;
 
 public:
-    virtual BOOL postBuild();
+    bool postBuild() override;
 
 private:
     LLFloaterInventorySettings(const LLSD& key);
diff --git a/indra/newview/llfloaterinventorythumbnailshelper.cpp b/indra/newview/llfloaterinventorythumbnailshelper.cpp
index 814f88e9b9..9775eda697 100644
--- a/indra/newview/llfloaterinventorythumbnailshelper.cpp
+++ b/indra/newview/llfloaterinventorythumbnailshelper.cpp
@@ -52,7 +52,7 @@ LLFloaterInventoryThumbnailsHelper::~LLFloaterInventoryThumbnailsHelper()
 {
 }
 
-BOOL LLFloaterInventoryThumbnailsHelper::postBuild()
+bool LLFloaterInventoryThumbnailsHelper::postBuild()
 {
     mInventoryThumbnailsList = getChild<LLScrollListCtrl>("inventory_thumbnails_list");
     mInventoryThumbnailsList->setAllowMultipleSelection(true);
diff --git a/indra/newview/llfloaterinventorythumbnailshelper.h b/indra/newview/llfloaterinventorythumbnailshelper.h
index b42a85d1a5..71eeef31ee 100644
--- a/indra/newview/llfloaterinventorythumbnailshelper.h
+++ b/indra/newview/llfloaterinventorythumbnailshelper.h
@@ -40,7 +40,7 @@ class LLFloaterInventoryThumbnailsHelper:
         friend class LLFloaterReg;
     private:
         LLFloaterInventoryThumbnailsHelper(const LLSD& key);
-        BOOL postBuild() override;
+        bool postBuild() override;
         ~LLFloaterInventoryThumbnailsHelper();
 
         LLScrollListCtrl* mInventoryThumbnailsList;
diff --git a/indra/newview/llfloaterjoystick.cpp b/indra/newview/llfloaterjoystick.cpp
index 128cf56be0..7db3621a4b 100644
--- a/indra/newview/llfloaterjoystick.cpp
+++ b/indra/newview/llfloaterjoystick.cpp
@@ -132,7 +132,7 @@ void LLFloaterJoystick::draw()
     LLFloater::draw();
 }
 
-BOOL LLFloaterJoystick::postBuild()
+bool LLFloaterJoystick::postBuild()
 {
     center();
     F32 range = gSavedSettings.getBOOL("Cursor3D") ? 128.f : 2.f;
@@ -160,7 +160,7 @@ BOOL LLFloaterJoystick::postBuild()
 
     refresh();
     refreshListOfDevices();
-    return TRUE;
+    return true;
 }
 
 LLFloaterJoystick::~LLFloaterJoystick()
@@ -416,7 +416,7 @@ void LLFloaterJoystick::onCommitJoystickEnabled(LLUICtrl*, void *joy_panel)
         joystick_enabled = true;
     }
     gSavedSettings.setBOOL("JoystickEnabled", joystick_enabled);
-    BOOL flycam_enabled = self->mCheckFlycamEnabled->get();
+    bool flycam_enabled = self->mCheckFlycamEnabled->get();
 
     if (!joystick_enabled || !flycam_enabled)
     {
diff --git a/indra/newview/llfloaterjoystick.h b/indra/newview/llfloaterjoystick.h
index e304431153..b94223a738 100644
--- a/indra/newview/llfloaterjoystick.h
+++ b/indra/newview/llfloaterjoystick.h
@@ -39,7 +39,7 @@ class LLFloaterJoystick : public LLFloater
 
 public:
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     virtual void refresh();
     virtual void apply();   // Apply the changed values.
     virtual void cancel();  // Cancel the changed values.
diff --git a/indra/newview/llfloaterlagmeter.cpp b/indra/newview/llfloaterlagmeter.cpp
index 3d4d0e55d4..28fa8dea9a 100644
--- a/indra/newview/llfloaterlagmeter.cpp
+++ b/indra/newview/llfloaterlagmeter.cpp
@@ -50,11 +50,11 @@ LLFloaterLagMeter::LLFloaterLagMeter(const LLSD& key)
     mCommitCallbackRegistrar.add("LagMeter.ClickShrink",  boost::bind(&LLFloaterLagMeter::onClickShrink, this));
 }
 
-BOOL LLFloaterLagMeter::postBuild()
+bool LLFloaterLagMeter::postBuild()
 {
     // Don't let this window take keyboard focus -- it's confusing to
     // lose arrow-key driving when testing lag.
-    setIsChrome(TRUE);
+    setIsChrome(true);
 
     // were we shrunk last time?
     if (isShrunk())
@@ -117,7 +117,7 @@ BOOL LLFloaterLagMeter::postBuild()
 //  childSetAction("minimize", onClickShrink, this);
     updateControls(isShrunk()); // if expanded append colon to the labels (EXT-4079)
 
-    return TRUE;
+    return true;
 }
 LLFloaterLagMeter::~LLFloaterLagMeter()
 {
@@ -179,10 +179,6 @@ void LLFloaterLagMeter::determineClient()
         {
             mClientCause->setText( getString("client_texture_loading_cause_msg", mStringArgs) );
         }
-        else if(LLViewerTexture::isMemoryForTextureLow())
-        {
-            mClientCause->setText( getString("client_texture_memory_cause_msg", mStringArgs) );
-        }
         else
         {
             mClientCause->setText( getString("client_complex_objects_cause_msg", mStringArgs) );
@@ -348,7 +344,7 @@ void LLFloaterLagMeter::updateControls(bool shrink)
         button->setLabel( getString("bigger_label", mStringArgs) );
     }
     // Don't put keyboard focus on the button
-    button->setFocus(FALSE);
+    button->setFocus(false);
 
 //  self->mClientText->setVisible(self->mShrunk);
 //  self->mClientCause->setVisible(self->mShrunk);
@@ -365,7 +361,7 @@ void LLFloaterLagMeter::updateControls(bool shrink)
 //  self->mShrunk = !self->mShrunk;
 }
 
-BOOL LLFloaterLagMeter::isShrunk()
+bool LLFloaterLagMeter::isShrunk()
 {
     return gSavedSettings.getBOOL("LagMeterShrunk");
 }
diff --git a/indra/newview/llfloaterlagmeter.h b/indra/newview/llfloaterlagmeter.h
index 774a42b2d3..1b5ff65781 100644
--- a/indra/newview/llfloaterlagmeter.h
+++ b/indra/newview/llfloaterlagmeter.h
@@ -37,7 +37,7 @@ class LLFloaterLagMeter : public LLFloater
 
 public:
     /*virtual*/ void draw();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 private:
 
     LLFloaterLagMeter(const LLSD& key);
@@ -46,7 +46,7 @@ private:
     void determineNetwork();
     void determineServer();
     void updateControls(bool shrink);
-    BOOL isShrunk();
+    bool isShrunk();
 
     void onClickShrink();
 
diff --git a/indra/newview/llfloaterland.cpp b/indra/newview/llfloaterland.cpp
index a6afa03e6a..9a794d1775 100644
--- a/indra/newview/llfloaterland.cpp
+++ b/indra/newview/llfloaterland.cpp
@@ -93,8 +93,8 @@ static std::string OWNER_GROUP      = "2";
 static std::string MATURITY         = "[MATURITY]";
 
 // constants used in callbacks below - syntactic sugar.
-static const BOOL BUY_GROUP_LAND = TRUE;
-static const BOOL BUY_PERSONAL_LAND = FALSE;
+static const bool BUY_GROUP_LAND = true;
+static const bool BUY_PERSONAL_LAND = false;
 LLPointer<LLParcelSelection> LLPanelLandGeneral::sSelectionForBuyPass = NULL;
 
 // Statics
@@ -125,7 +125,7 @@ class LLPanelLandExperiences
 {
 public:
     LLPanelLandExperiences(LLSafeHandle<LLParcelSelection>& parcelp);
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     void refresh();
 
     void experienceAdded(const LLUUID& id, U32 xp_type, U32 access_type);
@@ -155,7 +155,7 @@ public:
         return ((parcelp) ? (parcelp->getArea() >= MINIMUM_PARCEL_SIZE) : false);
     }
 
-    virtual BOOL        postBuild() override;
+    virtual bool        postBuild() override;
     virtual void        refresh() override;
 
     virtual LLParcel *  getParcel() override;
@@ -318,7 +318,7 @@ LLFloaterLand::LLFloaterLand(const LLSD& seed)
     LLViewerParcelMgr::getInstance()->addObserver( sObserver );
 }
 
-BOOL LLFloaterLand::postBuild()
+bool LLFloaterLand::postBuild()
 {
     setVisibleCallback(boost::bind(&LLFloaterLand::onVisibilityChanged, this, _2));
 
@@ -331,7 +331,7 @@ BOOL LLFloaterLand::postBuild()
         tab->selectTab(sLastTab);
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -439,19 +439,19 @@ void* LLFloaterLand::createPanelLandEnvironment(void* data)
 
 LLPanelLandGeneral::LLPanelLandGeneral(LLParcelSelectionHandle& parcel)
 :   LLPanel(),
-    mUncheckedSell(FALSE),
+    mUncheckedSell(false),
     mParcel(parcel)
 {
 }
 
-BOOL LLPanelLandGeneral::postBuild()
+bool LLPanelLandGeneral::postBuild()
 {
     mEditName = getChild<LLLineEditor>("Name");
     mEditName->setCommitCallback(onCommitAny, this);
     getChild<LLLineEditor>("Name")->setPrevalidate(LLTextValidate::validateASCIIPrintableNoPipe);
 
     mEditDesc = getChild<LLTextEditor>("Description");
-    mEditDesc->setCommitOnFocusLost(TRUE);
+    mEditDesc->setCommitOnFocusLost(true);
     mEditDesc->setCommitCallback(onCommitAny, this);
     mEditDesc->setContentTrusted(false);
     // No prevalidate function - historically the prevalidate function was broken,
@@ -544,7 +544,7 @@ BOOL LLPanelLandGeneral::postBuild()
 
     if(gDisconnected)
     {
-        return TRUE;
+        return true;
     }
 
     // note: on region change this will not be re checked, should not matter on Agni as
@@ -566,7 +566,7 @@ BOOL LLPanelLandGeneral::postBuild()
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -578,51 +578,51 @@ LLPanelLandGeneral::~LLPanelLandGeneral()
 // public
 void LLPanelLandGeneral::refresh()
 {
-    mEditName->setEnabled(FALSE);
+    mEditName->setEnabled(false);
     mEditName->setText(LLStringUtil::null);
 
-    mEditDesc->setEnabled(FALSE);
+    mEditDesc->setEnabled(false);
     mEditDesc->setText(getString("no_selection_text"));
 
     mTextSalePending->setText(LLStringUtil::null);
-    mTextSalePending->setEnabled(FALSE);
+    mTextSalePending->setEnabled(false);
 
-    mBtnDeedToGroup->setEnabled(FALSE);
-    mBtnSetGroup->setEnabled(FALSE);
-    mBtnStartAuction->setEnabled(FALSE);
+    mBtnDeedToGroup->setEnabled(false);
+    mBtnSetGroup->setEnabled(false);
+    mBtnStartAuction->setEnabled(false);
 
-    mCheckDeedToGroup   ->set(FALSE);
-    mCheckDeedToGroup   ->setEnabled(FALSE);
-    mCheckContributeWithDeed->set(FALSE);
-    mCheckContributeWithDeed->setEnabled(FALSE);
+    mCheckDeedToGroup   ->set(false);
+    mCheckDeedToGroup   ->setEnabled(false);
+    mCheckContributeWithDeed->set(false);
+    mCheckContributeWithDeed->setEnabled(false);
 
     mTextOwner->setText(LLStringUtil::null);
     mContentRating->setText(LLStringUtil::null);
     mLandType->setText(LLStringUtil::null);
     mBtnProfile->setLabel(getString("profile_text"));
-    mBtnProfile->setEnabled(FALSE);
+    mBtnProfile->setEnabled(false);
 
     mTextClaimDate->setText(LLStringUtil::null);
     mTextGroup->setText(LLStringUtil::null);
     mTextPrice->setText(LLStringUtil::null);
 
-    mSaleInfoForSale1->setVisible(FALSE);
-    mSaleInfoForSale2->setVisible(FALSE);
-    mSaleInfoForSaleObjects->setVisible(FALSE);
-    mSaleInfoForSaleNoObjects->setVisible(FALSE);
-    mSaleInfoNotForSale->setVisible(FALSE);
-    mBtnSellLand->setVisible(FALSE);
-    mBtnStopSellLand->setVisible(FALSE);
+    mSaleInfoForSale1->setVisible(false);
+    mSaleInfoForSale2->setVisible(false);
+    mSaleInfoForSaleObjects->setVisible(false);
+    mSaleInfoForSaleNoObjects->setVisible(false);
+    mSaleInfoNotForSale->setVisible(false);
+    mBtnSellLand->setVisible(false);
+    mBtnStopSellLand->setVisible(false);
 
     mTextPriceLabel->setText(LLStringUtil::null);
     mTextDwell->setText(LLStringUtil::null);
 
-    mBtnBuyLand->setEnabled(FALSE);
-    mBtnScriptLimits->setEnabled(FALSE);
-    mBtnBuyGroupLand->setEnabled(FALSE);
-    mBtnReleaseLand->setEnabled(FALSE);
-    mBtnReclaimLand->setEnabled(FALSE);
-    mBtnBuyPass->setEnabled(FALSE);
+    mBtnBuyLand->setEnabled(false);
+    mBtnScriptLimits->setEnabled(false);
+    mBtnBuyGroupLand->setEnabled(false);
+    mBtnReleaseLand->setEnabled(false);
+    mBtnReclaimLand->setEnabled(false);
+    mBtnBuyPass->setEnabled(false);
 
     if(gDisconnected)
     {
@@ -635,24 +635,24 @@ void LLPanelLandGeneral::refresh()
     if(regionp && (regionp->getOwner() == gAgent.getID()))
     {
         region_owner = true;
-        mBtnReleaseLand->setVisible(FALSE);
-        mBtnReclaimLand->setVisible(TRUE);
+        mBtnReleaseLand->setVisible(false);
+        mBtnReclaimLand->setVisible(true);
     }
     else
     {
-        mBtnReleaseLand->setVisible(TRUE);
-        mBtnReclaimLand->setVisible(FALSE);
+        mBtnReleaseLand->setVisible(true);
+        mBtnReclaimLand->setVisible(false);
     }
     LLParcel *parcel = mParcel->getParcel();
     if (parcel)
     {
         // something selected, hooray!
-        BOOL is_leased = (LLParcel::OS_LEASED == parcel->getOwnershipStatus());
-        BOOL region_xfer = FALSE;
+        bool is_leased = (LLParcel::OS_LEASED == parcel->getOwnershipStatus());
+        bool region_xfer = false;
         if(regionp
            && !(regionp->getRegionFlag(REGION_FLAGS_BLOCK_LAND_RESELL)))
         {
-            region_xfer = TRUE;
+            region_xfer = true;
         }
 
         if (regionp)
@@ -662,57 +662,57 @@ void LLPanelLandGeneral::refresh()
         }
 
         // estate owner/manager cannot edit other parts of the parcel
-        BOOL estate_manager_sellable = !parcel->getAuctionID()
+        bool estate_manager_sellable = !parcel->getAuctionID()
                                         && gAgent.canManageEstate()
                                         // estate manager/owner can only sell parcels owned by estate owner
                                         && regionp
                                         && (parcel->getOwnerID() == regionp->getOwner());
-        BOOL owner_sellable = region_xfer && !parcel->getAuctionID()
+        bool owner_sellable = region_xfer && !parcel->getAuctionID()
                             && LLViewerParcelMgr::isParcelModifiableByAgent(
                                         parcel, GP_LAND_SET_SALE_INFO);
-        BOOL can_be_sold = owner_sellable || estate_manager_sellable;
+        bool can_be_sold = owner_sellable || estate_manager_sellable;
 
         const LLUUID &owner_id = parcel->getOwnerID();
-        BOOL is_public = parcel->isPublic();
+        bool is_public = parcel->isPublic();
 
         // Is it owned?
         if (is_public)
         {
             mTextSalePending->setText(LLStringUtil::null);
-            mTextSalePending->setEnabled(FALSE);
+            mTextSalePending->setEnabled(false);
             mTextOwner->setText(getString("public_text"));
-            mTextOwner->setEnabled(FALSE);
-            mBtnProfile->setEnabled(FALSE);
+            mTextOwner->setEnabled(false);
+            mBtnProfile->setEnabled(false);
             mTextClaimDate->setText(LLStringUtil::null);
-            mTextClaimDate->setEnabled(FALSE);
+            mTextClaimDate->setEnabled(false);
             mTextGroup->setText(getString("none_text"));
-            mTextGroup->setEnabled(FALSE);
-            mBtnStartAuction->setEnabled(FALSE);
+            mTextGroup->setEnabled(false);
+            mBtnStartAuction->setEnabled(false);
         }
         else
         {
             if(!is_leased && (owner_id == gAgent.getID()))
             {
                 mTextSalePending->setText(getString("need_tier_to_modify"));
-                mTextSalePending->setEnabled(TRUE);
+                mTextSalePending->setEnabled(true);
             }
             else if(parcel->getAuctionID())
             {
                 mTextSalePending->setText(getString("auction_id_text"));
                 mTextSalePending->setTextArg("[ID]", llformat("%u", parcel->getAuctionID()));
-                mTextSalePending->setEnabled(TRUE);
+                mTextSalePending->setEnabled(true);
             }
             else
             {
                 // not the owner, or it is leased
                 mTextSalePending->setText(LLStringUtil::null);
-                mTextSalePending->setEnabled(FALSE);
+                mTextSalePending->setEnabled(false);
             }
             //refreshNames();
-            mTextOwner->setEnabled(TRUE);
+            mTextOwner->setEnabled(true);
 
             // We support both group and personal profiles
-            mBtnProfile->setEnabled(TRUE);
+            mBtnProfile->setEnabled(true);
 
             if (parcel->getGroupID().isNull())
             {
@@ -720,7 +720,7 @@ void LLPanelLandGeneral::refresh()
                 mBtnProfile->setLabel(getString("profile_text"));
 
                 mTextGroup->setText(getString("none_text"));
-                mTextGroup->setEnabled(FALSE);
+                mTextGroup->setEnabled(false);
             }
             else
             {
@@ -728,7 +728,7 @@ void LLPanelLandGeneral::refresh()
                 mBtnProfile->setLabel(getString("info_text"));
 
                 //mTextGroup->setText("HIPPOS!");//parcel->getGroupName());
-                mTextGroup->setEnabled(TRUE);
+                mTextGroup->setEnabled(true);
             }
 
             // Display claim date
@@ -740,25 +740,25 @@ void LLPanelLandGeneral::refresh()
             mTextClaimDate->setText(claim_date_str);
             mTextClaimDate->setEnabled(is_leased);
 
-            BOOL enable_auction = (gAgent.getGodLevel() >= GOD_LIAISON)
+            bool enable_auction = (gAgent.getGodLevel() >= GOD_LIAISON)
                                   && (owner_id == GOVERNOR_LINDEN_ID)
                                   && (parcel->getAuctionID() == 0);
             mBtnStartAuction->setEnabled(enable_auction);
         }
 
         // Display options
-        BOOL can_edit_identity = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_CHANGE_IDENTITY);
+        bool can_edit_identity = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_CHANGE_IDENTITY);
         mEditName->setEnabled(can_edit_identity);
         mEditDesc->setEnabled(can_edit_identity);
         mEditDesc->setParseURLs(!can_edit_identity);
 
-        BOOL can_edit_agent_only = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_NO_POWERS);
+        bool can_edit_agent_only = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_NO_POWERS);
         mBtnSetGroup->setEnabled(can_edit_agent_only && !parcel->getIsGroupOwned());
 
         const LLUUID& group_id = parcel->getGroupID();
 
         // Can only allow deeding if you own it and it's got a group.
-        BOOL enable_deed = (owner_id == gAgent.getID()
+        bool enable_deed = (owner_id == gAgent.getID()
                             && group_id.notNull()
                             && gAgent.isInGroup(group_id));
         // You don't need special powers to allow your object to
@@ -770,7 +770,7 @@ void LLPanelLandGeneral::refresh()
 
         // Actually doing the deeding requires you to have GP_LAND_DEED
         // powers in the group.
-        BOOL can_deed = gAgent.hasPowerInGroup(group_id, GP_LAND_DEED);
+        bool can_deed = gAgent.hasPowerInGroup(group_id, GP_LAND_DEED);
         mBtnDeedToGroup->setEnabled(   parcel->getAllowDeedToGroup()
                                     && group_id.notNull()
                                     && can_deed
@@ -780,10 +780,10 @@ void LLPanelLandGeneral::refresh()
         mEditName->setText( parcel->getName() );
         mEditDesc->setText( parcel->getDesc() );
 
-        BOOL for_sale = parcel->getForSale();
+        bool for_sale = parcel->getForSale();
 
-        mBtnSellLand->setVisible(FALSE);
-        mBtnStopSellLand->setVisible(FALSE);
+        mBtnSellLand->setVisible(false);
+        mBtnStopSellLand->setVisible(false);
 
         // show pricing information
         S32 area;
@@ -812,19 +812,19 @@ void LLPanelLandGeneral::refresh()
 
         if (for_sale)
         {
-            mSaleInfoForSale1->setVisible(TRUE);
-            mSaleInfoForSale2->setVisible(TRUE);
+            mSaleInfoForSale1->setVisible(true);
+            mSaleInfoForSale2->setVisible(true);
             if (parcel->getSellWithObjects())
             {
-                mSaleInfoForSaleObjects->setVisible(TRUE);
-                mSaleInfoForSaleNoObjects->setVisible(FALSE);
+                mSaleInfoForSaleObjects->setVisible(true);
+                mSaleInfoForSaleNoObjects->setVisible(false);
             }
             else
             {
-                mSaleInfoForSaleObjects->setVisible(FALSE);
-                mSaleInfoForSaleNoObjects->setVisible(TRUE);
+                mSaleInfoForSaleObjects->setVisible(false);
+                mSaleInfoForSaleNoObjects->setVisible(true);
             }
-            mSaleInfoNotForSale->setVisible(FALSE);
+            mSaleInfoNotForSale->setVisible(false);
 
             F32 cost_per_sqm = 0.0f;
             if (area > 0)
@@ -837,19 +837,19 @@ void LLPanelLandGeneral::refresh()
             mSaleInfoForSale1->setTextArg("[PRICE_PER_SQM]", llformat("%.1f", cost_per_sqm));
             if (can_be_sold)
             {
-                mBtnStopSellLand->setVisible(TRUE);
+                mBtnStopSellLand->setVisible(true);
             }
         }
         else
         {
-            mSaleInfoForSale1->setVisible(FALSE);
-            mSaleInfoForSale2->setVisible(FALSE);
-            mSaleInfoForSaleObjects->setVisible(FALSE);
-            mSaleInfoForSaleNoObjects->setVisible(FALSE);
-            mSaleInfoNotForSale->setVisible(TRUE);
+            mSaleInfoForSale1->setVisible(false);
+            mSaleInfoForSale2->setVisible(false);
+            mSaleInfoForSaleObjects->setVisible(false);
+            mSaleInfoForSaleNoObjects->setVisible(false);
+            mSaleInfoNotForSale->setVisible(true);
             if (can_be_sold)
             {
-                mBtnSellLand->setVisible(TRUE);
+                mBtnSellLand->setVisible(true);
             }
         }
 
@@ -869,15 +869,15 @@ void LLPanelLandGeneral::refresh()
         }
         else
         {
-            BOOL is_owner_release = LLViewerParcelMgr::isParcelOwnedByAgent(parcel, GP_LAND_RELEASE);
-            BOOL is_manager_release = (gAgent.canManageEstate() &&
+            bool is_owner_release = LLViewerParcelMgr::isParcelOwnedByAgent(parcel, GP_LAND_RELEASE);
+            bool is_manager_release = (gAgent.canManageEstate() &&
                                     regionp &&
                                     (parcel->getOwnerID() != regionp->getOwner()));
-            BOOL can_release = is_owner_release || is_manager_release;
+            bool can_release = is_owner_release || is_manager_release;
             mBtnReleaseLand->setEnabled( can_release );
         }
 
-        BOOL use_pass = parcel->getOwnerID()!= gAgent.getID() && parcel->getParcelFlag(PF_USE_PASS_LIST) && !LLViewerParcelMgr::getInstance()->isCollisionBanned();;
+        bool use_pass = parcel->getOwnerID()!= gAgent.getID() && parcel->getParcelFlag(PF_USE_PASS_LIST) && !LLViewerParcelMgr::getInstance()->isCollisionBanned();;
         mBtnBuyPass->setEnabled(use_pass);
 
     }
@@ -996,7 +996,7 @@ void LLPanelLandGeneral::setGroup(const LLUUID& group_id)
 // static
 void LLPanelLandGeneral::onClickBuyLand(void* data)
 {
-    BOOL* for_group = (BOOL*)data;
+    bool* for_group = (bool*)data;
     LLViewerParcelMgr::getInstance()->startBuyLand(*for_group);
 }
 
@@ -1035,7 +1035,7 @@ void LLPanelLandGeneral::onClickReclaim(void*)
 }
 
 // static
-BOOL LLPanelLandGeneral::enableBuyPass(void* data)
+bool LLPanelLandGeneral::enableBuyPass(void* data)
 {
     LLPanelLandGeneral* panelp = (LLPanelLandGeneral*)data;
     LLParcel* parcel = panelp != NULL ? panelp->mParcel->getParcel() : LLViewerParcelMgr::getInstance()->getParcelSelection()->getParcel();
@@ -1123,8 +1123,8 @@ void LLPanelLandGeneral::onCommitAny(LLUICtrl *ctrl, void *userdata)
     parcel->setName(name);
     parcel->setDesc(desc);
 
-    BOOL allow_deed_to_group= panelp->mCheckDeedToGroup->get();
-    BOOL contribute_with_deed = panelp->mCheckContributeWithDeed->get();
+    bool allow_deed_to_group= panelp->mCheckDeedToGroup->get();
+    bool contribute_with_deed = panelp->mCheckContributeWithDeed->get();
 
     parcel->setParcelFlag(PF_ALLOW_DEED_TO_GROUP, allow_deed_to_group);
     parcel->setContributeWithDeed(contribute_with_deed);
@@ -1150,7 +1150,7 @@ void LLPanelLandGeneral::onClickStopSellLand(void* data)
     LLPanelLandGeneral* panelp = (LLPanelLandGeneral*)data;
     LLParcel* parcel = panelp->mParcel->getParcel();
 
-    parcel->setParcelFlag(PF_FOR_SALE, FALSE);
+    parcel->setParcelFlag(PF_FOR_SALE, false);
     parcel->setSalePrice(0);
     parcel->setAuthorizedBuyerID(LLUUID::null);
 
@@ -1183,18 +1183,18 @@ LLPanelLandObjects::LLPanelLandObjects(LLParcelSelectionHandle& parcel)
         mBtnRefresh(NULL),
         mBtnReturnOwnerList(NULL),
         mOwnerList(NULL),
-        mFirstReply(TRUE),
+        mFirstReply(true),
         mSelectedCount(0),
-        mSelectedIsGroup(FALSE)
+        mSelectedIsGroup(false)
 {
 }
 
 
 
-BOOL LLPanelLandObjects::postBuild()
+bool LLPanelLandObjects::postBuild()
 {
 
-    mFirstReply = TRUE;
+    mFirstReply = true;
     mParcelObjectBonus = getChild<LLTextBox>("parcel_object_bonus");
     mSWTotalObjects = getChild<LLTextBox>("objects_available");
     mObjectContribution = getChild<LLTextBox>("object_contrib_text");
@@ -1240,12 +1240,12 @@ BOOL LLPanelLandObjects::postBuild()
 
     mOwnerList = getChild<LLNameListCtrl>("owner list");
     mOwnerList->setIsFriendCallback(LLAvatarActions::isFriend);
-    mOwnerList->sortByColumnIndex(3, FALSE);
+    mOwnerList->sortByColumnIndex(3, false);
     childSetCommitCallback("owner list", onCommitList, this);
     mOwnerList->setDoubleClickCallback(onDoubleClickOwner, this);
     mOwnerList->setContextMenu(LLScrollListCtrl::MENU_AVATAR);
 
-    return TRUE;
+    return true;
 }
 
 
@@ -1272,7 +1272,7 @@ void LLPanelLandObjects::onDoubleClickOwner(void *userdata)
             return;
         }
         // Is this a group?
-        BOOL is_group = cell->getValue().asString() == OWNER_GROUP;
+        bool is_group = cell->getValue().asString() == OWNER_GROUP;
         if (is_group)
         {
             LLGroupActions::show(owner_id);
@@ -1289,19 +1289,19 @@ void LLPanelLandObjects::refresh()
 {
     LLParcel *parcel = mParcel->getParcel();
 
-    mBtnShowOwnerObjects->setEnabled(FALSE);
-    mBtnShowGroupObjects->setEnabled(FALSE);
-    mBtnShowOtherObjects->setEnabled(FALSE);
-    mBtnReturnOwnerObjects->setEnabled(FALSE);
-    mBtnReturnGroupObjects->setEnabled(FALSE);
-    mBtnReturnOtherObjects->setEnabled(FALSE);
-    mCleanOtherObjectsTime->setEnabled(FALSE);
-    mBtnRefresh->           setEnabled(FALSE);
-    mBtnReturnOwnerList->   setEnabled(FALSE);
+    mBtnShowOwnerObjects->setEnabled(false);
+    mBtnShowGroupObjects->setEnabled(false);
+    mBtnShowOtherObjects->setEnabled(false);
+    mBtnReturnOwnerObjects->setEnabled(false);
+    mBtnReturnGroupObjects->setEnabled(false);
+    mBtnReturnOtherObjects->setEnabled(false);
+    mCleanOtherObjectsTime->setEnabled(false);
+    mBtnRefresh->           setEnabled(false);
+    mBtnReturnOwnerList->   setEnabled(false);
 
     mSelectedOwners.clear();
     mOwnerList->deleteAllItems();
-    mOwnerList->setEnabled(FALSE);
+    mOwnerList->setEnabled(false);
 
     if (!parcel || gDisconnected)
     {
@@ -1340,12 +1340,12 @@ void LLPanelLandObjects::refresh()
 
         if (parcel_object_bonus != 1.0f)
         {
-            mParcelObjectBonus->setVisible(TRUE);
+            mParcelObjectBonus->setVisible(true);
             mParcelObjectBonus->setTextArg("[BONUS]", llformat("%.2f", parcel_object_bonus));
         }
         else
         {
-            mParcelObjectBonus->setVisible(FALSE);
+            mParcelObjectBonus->setVisible(false);
         }
 
         if (sw_total > sw_max)
@@ -1369,30 +1369,30 @@ void LLPanelLandObjects::refresh()
         mSelectedObjects->setTextArg("[COUNT]", llformat("%d", selected));
         mCleanOtherObjectsTime->setText(llformat("%d", mOtherTime));
 
-        BOOL can_return_owned = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_RETURN_GROUP_OWNED);
-        BOOL can_return_group_set = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_RETURN_GROUP_SET);
-        BOOL can_return_other = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_RETURN_NON_GROUP);
+        bool can_return_owned = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_RETURN_GROUP_OWNED);
+        bool can_return_group_set = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_RETURN_GROUP_SET);
+        bool can_return_other = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_RETURN_NON_GROUP);
 
         if (can_return_owned || can_return_group_set || can_return_other)
         {
             if (owned && can_return_owned)
             {
-                mBtnShowOwnerObjects->setEnabled(TRUE);
-                mBtnReturnOwnerObjects->setEnabled(TRUE);
+                mBtnShowOwnerObjects->setEnabled(true);
+                mBtnReturnOwnerObjects->setEnabled(true);
             }
             if (group && can_return_group_set)
             {
-                mBtnShowGroupObjects->setEnabled(TRUE);
-                mBtnReturnGroupObjects->setEnabled(TRUE);
+                mBtnShowGroupObjects->setEnabled(true);
+                mBtnReturnGroupObjects->setEnabled(true);
             }
             if (other && can_return_other)
             {
-                mBtnShowOtherObjects->setEnabled(TRUE);
-                mBtnReturnOtherObjects->setEnabled(TRUE);
+                mBtnShowOtherObjects->setEnabled(true);
+                mBtnReturnOtherObjects->setEnabled(true);
             }
 
-            mCleanOtherObjectsTime->setEnabled(TRUE);
-            mBtnRefresh->setEnabled(TRUE);
+            mCleanOtherObjectsTime->setEnabled(true);
+            mBtnRefresh->setEnabled(true);
         }
     }
 }
@@ -1617,8 +1617,8 @@ void LLPanelLandObjects::onClickRefresh(void* userdata)
     // ready the list for results
     self->mOwnerList->deleteAllItems();
     self->mOwnerList->setCommentText(LLTrans::getString("Searching"));
-    self->mOwnerList->setEnabled(FALSE);
-    self->mFirstReply = TRUE;
+    self->mOwnerList->setEnabled(false);
+    self->mFirstReply = true;
 
     // send the message
     msg->newMessageFast(_PREHASH_ParcelObjectOwnersRequest);
@@ -1649,18 +1649,18 @@ void LLPanelLandObjects::processParcelObjectOwnersReply(LLMessageSystem *msg, vo
     S32 rows = msg->getNumberOfBlocksFast(_PREHASH_Data);
     //uuid_list_t return_ids;
     LLUUID  owner_id;
-    BOOL    is_group_owned;
+    bool    is_group_owned;
     S32     object_count;
     U32     most_recent_time = 0;
-    BOOL    is_online;
+    bool    is_online;
     std::string object_count_str;
-    //BOOL b_need_refresh = FALSE;
+    //bool b_need_refresh = false;
 
     // If we were waiting for the first reply, clear the "Searching..." text.
     if (self->mFirstReply)
     {
         self->mOwnerList->deleteAllItems();
-        self->mFirstReply = FALSE;
+        self->mFirstReply = false;
     }
 
     for(S32 i = 0; i < rows; ++i)
@@ -1720,7 +1720,7 @@ void LLPanelLandObjects::processParcelObjectOwnersReply(LLMessageSystem *msg, vo
     }
     else
     {
-        self->mOwnerList->setEnabled(TRUE);
+        self->mOwnerList->setEnabled(true);
     }
 
     self->mBtnRefresh->setEnabled(true);
@@ -1731,7 +1731,7 @@ void LLPanelLandObjects::onCommitList(LLUICtrl* ctrl, void* data)
 {
     LLPanelLandObjects* self = (LLPanelLandObjects*)data;
 
-    if (FALSE == self->mOwnerList->getCanSelect())
+    if (false == self->mOwnerList->getCanSelect())
     {
         return;
     }
@@ -1755,7 +1755,7 @@ void LLPanelLandObjects::onCommitList(LLUICtrl* ctrl, void* data)
         // Set the selection, and enable the return button.
         self->mSelectedOwners.clear();
         self->mSelectedOwners.insert(item->getUUID());
-        self->mBtnReturnOwnerList->setEnabled(TRUE);
+        self->mBtnReturnOwnerList->setEnabled(true);
 
         // Highlight this user's objects
         clickShowCore(self, RT_LIST, &(self->mSelectedOwners));
@@ -1934,7 +1934,7 @@ LLPanelLandOptions::LLPanelLandOptions(LLParcelSelectionHandle& parcel)
 }
 
 
-BOOL LLPanelLandOptions::postBuild()
+bool LLPanelLandOptions::postBuild()
 {
     mCheckEditObjects = getChild<LLCheckBoxCtrl>( "edit objects check");
     childSetCommitCallback("edit objects check", onCommitAny, this);
@@ -1992,8 +1992,8 @@ BOOL LLPanelLandOptions::postBuild()
     if (gAgent.wantsPGOnly())
     {
         // Disable these buttons if they are PG (Teen) users
-        mMatureCtrl->setVisible(FALSE);
-        mMatureCtrl->setEnabled(FALSE);
+        mMatureCtrl->setVisible(false);
+        mMatureCtrl->setEnabled(false);
     }
 
 
@@ -2001,7 +2001,7 @@ BOOL LLPanelLandOptions::postBuild()
     if (mSnapshotCtrl)
     {
         mSnapshotCtrl->setCommitCallback( onCommitAny, this );
-        mSnapshotCtrl->setAllowNoTexture ( TRUE );
+        mSnapshotCtrl->setAllowNoTexture ( true );
         mSnapshotCtrl->setImmediateFilterPermMask(PERM_COPY | PERM_TRANSFER);
         mSnapshotCtrl->setDnDFilterPermMask(PERM_COPY | PERM_TRANSFER);
     }
@@ -2024,7 +2024,7 @@ BOOL LLPanelLandOptions::postBuild()
     mLandingTypeCombo = getChild<LLComboBox>( "landing type");
     childSetCommitCallback("landing type", onCommitAny, this);
 
-    return TRUE;
+    return true;
 }
 
 
@@ -2041,55 +2041,55 @@ void LLPanelLandOptions::refresh()
     LLParcel *parcel = mParcel->getParcel();
     if (!parcel || gDisconnected)
     {
-        mCheckEditObjects   ->set(FALSE);
-        mCheckEditObjects   ->setEnabled(FALSE);
+        mCheckEditObjects   ->set(false);
+        mCheckEditObjects   ->setEnabled(false);
 
-        mCheckEditGroupObjects  ->set(FALSE);
-        mCheckEditGroupObjects  ->setEnabled(FALSE);
+        mCheckEditGroupObjects  ->set(false);
+        mCheckEditGroupObjects  ->setEnabled(false);
 
-        mCheckAllObjectEntry    ->set(FALSE);
-        mCheckAllObjectEntry    ->setEnabled(FALSE);
+        mCheckAllObjectEntry    ->set(false);
+        mCheckAllObjectEntry    ->setEnabled(false);
 
-        mCheckGroupObjectEntry  ->set(FALSE);
-        mCheckGroupObjectEntry  ->setEnabled(FALSE);
+        mCheckGroupObjectEntry  ->set(false);
+        mCheckGroupObjectEntry  ->setEnabled(false);
 
-        mCheckSafe          ->set(FALSE);
-        mCheckSafe          ->setEnabled(FALSE);
+        mCheckSafe          ->set(false);
+        mCheckSafe          ->setEnabled(false);
 
-        mCheckFly           ->set(FALSE);
-        mCheckFly           ->setEnabled(FALSE);
+        mCheckFly           ->set(false);
+        mCheckFly           ->setEnabled(false);
 
-        mCheckGroupScripts  ->set(FALSE);
-        mCheckGroupScripts  ->setEnabled(FALSE);
+        mCheckGroupScripts  ->set(false);
+        mCheckGroupScripts  ->setEnabled(false);
 
-        mCheckOtherScripts  ->set(FALSE);
-        mCheckOtherScripts  ->setEnabled(FALSE);
+        mCheckOtherScripts  ->set(false);
+        mCheckOtherScripts  ->setEnabled(false);
 
-        mPushRestrictionCtrl->set(FALSE);
-        mPushRestrictionCtrl->setEnabled(FALSE);
+        mPushRestrictionCtrl->set(false);
+        mPushRestrictionCtrl->setEnabled(false);
 
-        mSeeAvatarsCtrl->set(TRUE);
-        mSeeAvatarsCtrl->setEnabled(FALSE);
-        mSeeAvatarsText->setEnabled(FALSE);
+        mSeeAvatarsCtrl->set(true);
+        mSeeAvatarsCtrl->setEnabled(false);
+        mSeeAvatarsText->setEnabled(false);
 
         mLandingTypeCombo->setCurrentByIndex(0);
-        mLandingTypeCombo->setEnabled(FALSE);
+        mLandingTypeCombo->setEnabled(false);
 
         mSnapshotCtrl->setImageAssetID(LLUUID::null);
-        mSnapshotCtrl->setEnabled(FALSE);
+        mSnapshotCtrl->setEnabled(false);
 
         mLocationText->setTextArg("[LANDING]", getString("landing_point_none"));
-        mSetBtn->setEnabled(FALSE);
-        mClearBtn->setEnabled(FALSE);
+        mSetBtn->setEnabled(false);
+        mClearBtn->setEnabled(false);
 
-        mMatureCtrl->setEnabled(FALSE);
+        mMatureCtrl->setEnabled(false);
     }
     else
     {
         // something selected, hooray!
 
         // Display options
-        BOOL can_change_options = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_OPTIONS);
+        bool can_change_options = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_OPTIONS);
         mCheckEditObjects   ->set( parcel->getAllowModify() );
         mCheckEditObjects   ->setEnabled( can_change_options );
 
@@ -2119,7 +2119,7 @@ void LLPanelLandOptions::refresh()
         {
             mPushRestrictionCtrl->setLabel(getString("push_restrict_region_text"));
             mPushRestrictionCtrl->setEnabled(false);
-            mPushRestrictionCtrl->set(TRUE);
+            mPushRestrictionCtrl->set(true);
         }
         else
         {
@@ -2131,7 +2131,7 @@ void LLPanelLandOptions::refresh()
         mSeeAvatarsCtrl->setEnabled(can_change_options && parcel->getHaveNewParcelLimitData());
         mSeeAvatarsText->setEnabled(can_change_options && parcel->getHaveNewParcelLimitData());
 
-        BOOL can_change_landing_point = LLViewerParcelMgr::isParcelModifiableByAgent(parcel,
+        bool can_change_landing_point = LLViewerParcelMgr::isParcelModifiableByAgent(parcel,
                                                         GP_LAND_SET_LANDING_POINT);
         mLandingTypeCombo->setCurrentByIndex((S32)parcel->getLandingType());
         mLandingTypeCombo->setEnabled( can_change_landing_point );
@@ -2166,13 +2166,13 @@ void LLPanelLandOptions::refresh()
         if (gAgent.wantsPGOnly())
         {
             // Disable these buttons if they are PG (Teen) users
-            mMatureCtrl->setVisible(FALSE);
-            mMatureCtrl->setEnabled(FALSE);
+            mMatureCtrl->setVisible(false);
+            mMatureCtrl->setEnabled(false);
         }
         else
         {
             // not teen so fill in the data for the maturity control
-            mMatureCtrl->setVisible(TRUE);
+            mMatureCtrl->setVisible(true);
             LLStyle::Params style;
             style.image(LLUI::getUIImage(gFloaterView->getParentFloater(this)->getString("maturity_icon_moderate")));
             LLCheckBoxWithTBAcess* fullaccess_mature_ctrl = (LLCheckBoxWithTBAcess*)mMatureCtrl;
@@ -2180,7 +2180,7 @@ void LLPanelLandOptions::refresh()
             fullaccess_mature_ctrl->getTextBox()->appendImageSegment(style);
             fullaccess_mature_ctrl->getTextBox()->appendText(getString("mature_check_mature"), false);
             fullaccess_mature_ctrl->setToolTip(getString("mature_check_mature_tooltip"));
-            fullaccess_mature_ctrl->reshape(fullaccess_mature_ctrl->getRect().getWidth(), fullaccess_mature_ctrl->getRect().getHeight(), FALSE);
+            fullaccess_mature_ctrl->reshape(fullaccess_mature_ctrl->getRect().getWidth(), fullaccess_mature_ctrl->getRect().getHeight(), false);
 
             // they can see the checkbox, but its disposition depends on the
             // state of the region
@@ -2189,8 +2189,8 @@ void LLPanelLandOptions::refresh()
             {
                 if (regionp->getSimAccess() == SIM_ACCESS_PG)
                 {
-                    mMatureCtrl->setEnabled(FALSE);
-                    mMatureCtrl->set(FALSE);
+                    mMatureCtrl->setEnabled(false);
+                    mMatureCtrl->set(false);
                 }
                 else if (regionp->getSimAccess() == SIM_ACCESS_MATURE)
                 {
@@ -2199,8 +2199,8 @@ void LLPanelLandOptions::refresh()
                 }
                 else if (regionp->getSimAccess() == SIM_ACCESS_ADULT)
                 {
-                    mMatureCtrl->setEnabled(FALSE);
-                    mMatureCtrl->set(TRUE);
+                    mMatureCtrl->setEnabled(false);
+                    mMatureCtrl->set(true);
                     mMatureCtrl->setLabel(getString("mature_check_adult"));
                     mMatureCtrl->setToolTip(getString("mature_check_adult_tooltip"));
                 }
@@ -2222,12 +2222,12 @@ void LLPanelLandOptions::refreshSearch()
     LLParcel *parcel = mParcel->getParcel();
     if (!parcel || gDisconnected)
     {
-        mCheckShowDirectory->set(FALSE);
-        mCheckShowDirectory->setEnabled(FALSE);
+        mCheckShowDirectory->set(false);
+        mCheckShowDirectory->setEnabled(false);
 
         const std::string& none_string = LLParcel::getCategoryString(LLParcel::C_NONE);
         mCategoryCombo->setValue(none_string);
-        mCategoryCombo->setEnabled(FALSE);
+        mCategoryCombo->setEnabled(false);
         return;
     }
 
@@ -2240,7 +2240,7 @@ void LLPanelLandOptions::refreshSearch()
             && region
             && !(region->getRegionFlag(REGION_FLAGS_BLOCK_PARCEL_SEARCH));
 
-    BOOL show_directory = parcel->getParcelFlag(PF_SHOW_DIRECTORY);
+    bool show_directory = parcel->getParcelFlag(PF_SHOW_DIRECTORY);
     mCheckShowDirectory->set(show_directory);
 
     // Set by string in case the order in UI doesn't match the order by index.
@@ -2315,21 +2315,21 @@ void LLPanelLandOptions::onCommitAny(LLUICtrl *ctrl, void *userdata)
     }
 
     // Extract data from UI
-    BOOL create_objects     = self->mCheckEditObjects->get();
-    BOOL create_group_objects   = self->mCheckEditGroupObjects->get() || self->mCheckEditObjects->get();
-    BOOL all_object_entry       = self->mCheckAllObjectEntry->get();
-    BOOL group_object_entry = self->mCheckGroupObjectEntry->get() || self->mCheckAllObjectEntry->get();
-    BOOL allow_terraform    = false; // removed from UI so always off now - self->mCheckEditLand->get();
-    BOOL allow_damage       = !self->mCheckSafe->get();
-    BOOL allow_fly          = self->mCheckFly->get();
-    BOOL allow_landmark     = TRUE; // cannot restrict landmark creation
-    BOOL allow_other_scripts    = self->mCheckOtherScripts->get();
-    BOOL allow_group_scripts    = self->mCheckGroupScripts->get() || allow_other_scripts;
-    BOOL allow_publish      = FALSE;
-    BOOL mature_publish     = self->mMatureCtrl->get();
-    BOOL push_restriction   = self->mPushRestrictionCtrl->get();
-    BOOL see_avs            = self->mSeeAvatarsCtrl->get();
-    BOOL show_directory     = self->mCheckShowDirectory->get();
+    bool create_objects     = self->mCheckEditObjects->get();
+    bool create_group_objects   = self->mCheckEditGroupObjects->get() || self->mCheckEditObjects->get();
+    bool all_object_entry       = self->mCheckAllObjectEntry->get();
+    bool group_object_entry = self->mCheckGroupObjectEntry->get() || self->mCheckAllObjectEntry->get();
+    bool allow_terraform    = false; // removed from UI so always off now - self->mCheckEditLand->get();
+    bool allow_damage       = !self->mCheckSafe->get();
+    bool allow_fly          = self->mCheckFly->get();
+    bool allow_landmark     = true; // cannot restrict landmark creation
+    bool allow_other_scripts    = self->mCheckOtherScripts->get();
+    bool allow_group_scripts    = self->mCheckGroupScripts->get() || allow_other_scripts;
+    bool allow_publish      = false;
+    bool mature_publish     = self->mMatureCtrl->get();
+    bool push_restriction   = self->mPushRestrictionCtrl->get();
+    bool see_avs            = self->mSeeAvatarsCtrl->get();
+    bool show_directory     = self->mCheckShowDirectory->get();
     // we have to get the index from a lookup, not from the position in the dropdown!
     S32  category_index     = LLParcel::getCategoryFromString(self->mCategoryCombo->getSelectedValue());
     S32  landing_type_index = self->mLandingTypeCombo->getCurrentIndex();
@@ -2441,7 +2441,7 @@ LLPanelLandAccess::LLPanelLandAccess(LLParcelSelectionHandle& parcel)
 }
 
 
-BOOL LLPanelLandAccess::postBuild()
+bool LLPanelLandAccess::postBuild()
 {
     childSetCommitCallback("public_access", onCommitPublicAccess, this);
     childSetCommitCallback("limit_payment", onCommitAny, this);
@@ -2460,19 +2460,19 @@ BOOL LLPanelLandAccess::postBuild()
     mListAccess = getChild<LLNameListCtrl>("AccessList");
     if (mListAccess)
     {
-        mListAccess->sortByColumnIndex(0, TRUE); // ascending
+        mListAccess->sortByColumnIndex(0, true); // ascending
         mListAccess->setContextMenu(LLScrollListCtrl::MENU_AVATAR);
     }
 
     mListBanned = getChild<LLNameListCtrl>("BannedList");
     if (mListBanned)
     {
-        mListBanned->sortByColumnIndex(0, TRUE); // ascending
+        mListBanned->sortByColumnIndex(0, true); // ascending
         mListBanned->setContextMenu(LLScrollListCtrl::MENU_AVATAR);
         mListBanned->setAlternateSort();
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -2488,9 +2488,9 @@ void LLPanelLandAccess::refresh()
     // Display options
     if (parcel && !gDisconnected)
     {
-        BOOL use_access_list = parcel->getParcelFlag(PF_USE_ACCESS_LIST);
-        BOOL use_group = parcel->getParcelFlag(PF_USE_ACCESS_GROUP);
-        BOOL public_access = !use_access_list;
+        bool use_access_list = parcel->getParcelFlag(PF_USE_ACCESS_LIST);
+        bool use_group = parcel->getParcelFlag(PF_USE_ACCESS_GROUP);
+        bool public_access = !use_access_list;
 
         if (parcel->getRegionAllowAccessOverride())
         {
@@ -2499,8 +2499,8 @@ void LLPanelLandAccess::refresh()
         }
         else
         {
-            getChild<LLUICtrl>("public_access")->setValue(TRUE);
-            getChild<LLUICtrl>("GroupCheck")->setValue(FALSE);
+            getChild<LLUICtrl>("public_access")->setValue(true);
+            getChild<LLUICtrl>("GroupCheck")->setValue(false);
         }
         std::string group_name;
         gCacheName->getGroupName(parcel->getGroupID(), group_name);
@@ -2512,7 +2512,7 @@ void LLPanelLandAccess::refresh()
             // Clear the sort order so we don't re-sort on every add.
             mListAccess->clearSortOrder();
             mListAccess->deleteAllItems();
-            S32 count = parcel->mAccessList.size();
+            auto count = parcel->mAccessList.size();
             getChild<LLUICtrl>("AllowedText")->setTextArg("[COUNT]", llformat("%d",count));
             getChild<LLUICtrl>("AllowedText")->setTextArg("[MAX]", llformat("%d",PARCEL_MAX_ACCESS_LIST));
 
@@ -2549,9 +2549,9 @@ void LLPanelLandAccess::refresh()
                     }
                     prefix.append(" " + parent_floater->getString("Remaining") + ") ");
                 }
-                mListAccess->addNameItem(entry.mID, ADD_DEFAULT, TRUE, "", prefix);
+                mListAccess->addNameItem(entry.mID, ADD_DEFAULT, true, "", prefix);
             }
-            mListAccess->sortByName(TRUE);
+            mListAccess->sortByName(true);
         }
 
         // Ban List
@@ -2560,7 +2560,7 @@ void LLPanelLandAccess::refresh()
             // Clear the sort order so we don't re-sort on every add.
             mListBanned->clearSortOrder();
             mListBanned->deleteAllItems();
-            S32 count = parcel->mBanList.size();
+            auto count = parcel->mBanList.size();
             getChild<LLUICtrl>("BanCheck")->setTextArg("[COUNT]", llformat("%d",count));
             getChild<LLUICtrl>("BanCheck")->setTextArg("[MAX]", llformat("%d",PARCEL_MAX_ACCESS_LIST));
 
@@ -2617,12 +2617,12 @@ void LLPanelLandAccess::refresh()
                 columns[1]["alt_value"] = entry.mTime != 0 ? std::to_string(seconds) : "Always";
                 mListBanned->addElement(item);
             }
-            mListBanned->sortByName(TRUE);
+            mListBanned->sortByName(true);
         }
 
         if(parcel->getRegionDenyAnonymousOverride())
         {
-            getChild<LLUICtrl>("limit_payment")->setValue(TRUE);
+            getChild<LLUICtrl>("limit_payment")->setValue(true);
             getChild<LLUICtrl>("limit_payment")->setLabelArg("[ESTATE_PAYMENT_LIMIT]", getString("access_estate_defined") );
         }
         else
@@ -2632,7 +2632,7 @@ void LLPanelLandAccess::refresh()
         }
         if(parcel->getRegionDenyAgeUnverifiedOverride())
         {
-            getChild<LLUICtrl>("limit_age_verified")->setValue(TRUE);
+            getChild<LLUICtrl>("limit_age_verified")->setValue(true);
             getChild<LLUICtrl>("limit_age_verified")->setLabelArg("[ESTATE_AGE_LIMIT]", getString("access_estate_defined") );
         }
         else
@@ -2641,7 +2641,7 @@ void LLPanelLandAccess::refresh()
             getChild<LLUICtrl>("limit_age_verified")->setLabelArg("[ESTATE_AGE_LIMIT]", std::string() );
         }
 
-        BOOL use_pass = parcel->getParcelFlag(PF_USE_PASS_LIST);
+        bool use_pass = parcel->getParcelFlag(PF_USE_PASS_LIST);
         getChild<LLUICtrl>("PassCheck")->setValue(use_pass);
         LLCtrlSelectionInterface* passcombo = childGetSelectionInterface("pass_combo");
         if (passcombo)
@@ -2660,12 +2660,12 @@ void LLPanelLandAccess::refresh()
     }
     else
     {
-        getChild<LLUICtrl>("public_access")->setValue(FALSE);
-        getChild<LLUICtrl>("limit_payment")->setValue(FALSE);
-        getChild<LLUICtrl>("limit_age_verified")->setValue(FALSE);
-        getChild<LLUICtrl>("GroupCheck")->setValue(FALSE);
+        getChild<LLUICtrl>("public_access")->setValue(false);
+        getChild<LLUICtrl>("limit_payment")->setValue(false);
+        getChild<LLUICtrl>("limit_age_verified")->setValue(false);
+        getChild<LLUICtrl>("GroupCheck")->setValue(false);
         getChild<LLUICtrl>("GroupCheck")->setLabelArg("[GROUP]", LLStringUtil::null );
-        getChild<LLUICtrl>("PassCheck")->setValue(FALSE);
+        getChild<LLUICtrl>("PassCheck")->setValue(false);
         getChild<LLUICtrl>("PriceSpin")->setValue((F32)PARCEL_PASS_PRICE_DEFAULT);
         getChild<LLUICtrl>("HoursSpin")->setValue(PARCEL_PASS_HOURS_DEFAULT );
         getChild<LLUICtrl>("AccessList")->setToolTipArg(LLStringExplicit("[LISTED]"), llformat("%d",0));
@@ -2677,26 +2677,26 @@ void LLPanelLandAccess::refresh()
 
 void LLPanelLandAccess::refresh_ui()
 {
-    getChildView("public_access")->setEnabled(FALSE);
-    getChildView("limit_payment")->setEnabled(FALSE);
-    getChildView("limit_age_verified")->setEnabled(FALSE);
-    getChildView("GroupCheck")->setEnabled(FALSE);
-    getChildView("PassCheck")->setEnabled(FALSE);
-    getChildView("pass_combo")->setEnabled(FALSE);
-    getChildView("PriceSpin")->setEnabled(FALSE);
-    getChildView("HoursSpin")->setEnabled(FALSE);
-    getChildView("AccessList")->setEnabled(FALSE);
-    getChildView("BannedList")->setEnabled(FALSE);
-    getChildView("add_allowed")->setEnabled(FALSE);
-    getChildView("remove_allowed")->setEnabled(FALSE);
-    getChildView("add_banned")->setEnabled(FALSE);
-    getChildView("remove_banned")->setEnabled(FALSE);
+    getChildView("public_access")->setEnabled(false);
+    getChildView("limit_payment")->setEnabled(false);
+    getChildView("limit_age_verified")->setEnabled(false);
+    getChildView("GroupCheck")->setEnabled(false);
+    getChildView("PassCheck")->setEnabled(false);
+    getChildView("pass_combo")->setEnabled(false);
+    getChildView("PriceSpin")->setEnabled(false);
+    getChildView("HoursSpin")->setEnabled(false);
+    getChildView("AccessList")->setEnabled(false);
+    getChildView("BannedList")->setEnabled(false);
+    getChildView("add_allowed")->setEnabled(false);
+    getChildView("remove_allowed")->setEnabled(false);
+    getChildView("add_banned")->setEnabled(false);
+    getChildView("remove_banned")->setEnabled(false);
 
     LLParcel *parcel = mParcel->getParcel();
     if (parcel && !gDisconnected)
     {
-        BOOL can_manage_allowed = false;
-        BOOL can_manage_banned = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_MANAGE_BANNED);
+        bool can_manage_allowed = false;
+        bool can_manage_banned = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_MANAGE_BANNED);
 
         if (parcel->getRegionAllowAccessOverride())
         {   // Estate owner may have disabled allowing the parcel owner from managing access.
@@ -2704,14 +2704,14 @@ void LLPanelLandAccess::refresh_ui()
         }
 
         getChildView("public_access")->setEnabled(can_manage_allowed);
-        BOOL public_access = getChild<LLUICtrl>("public_access")->getValue().asBoolean();
+        bool public_access = getChild<LLUICtrl>("public_access")->getValue().asBoolean();
         if (public_access)
         {
             bool override = false;
             if(parcel->getRegionDenyAnonymousOverride())
             {
                 override = true;
-                getChildView("limit_payment")->setEnabled(FALSE);
+                getChildView("limit_payment")->setEnabled(false);
             }
             else
             {
@@ -2720,7 +2720,7 @@ void LLPanelLandAccess::refresh_ui()
             if(parcel->getRegionDenyAgeUnverifiedOverride())
             {
                 override = true;
-                getChildView("limit_age_verified")->setEnabled(FALSE);
+                getChildView("limit_age_verified")->setEnabled(false);
             }
             else
             {
@@ -2734,17 +2734,17 @@ void LLPanelLandAccess::refresh_ui()
             {
                 getChildView("Only Allow")->setToolTip(std::string());
             }
-            getChildView("PassCheck")->setEnabled(FALSE);
-            getChildView("pass_combo")->setEnabled(FALSE);
-            getChildView("AccessList")->setEnabled(FALSE);
+            getChildView("PassCheck")->setEnabled(false);
+            getChildView("pass_combo")->setEnabled(false);
+            getChildView("AccessList")->setEnabled(false);
         }
         else
         {
-            getChildView("limit_payment")->setEnabled(FALSE);
-            getChildView("limit_age_verified")->setEnabled(FALSE);
+            getChildView("limit_payment")->setEnabled(false);
+            getChildView("limit_age_verified")->setEnabled(false);
 
 
-            BOOL sell_passes = getChild<LLUICtrl>("PassCheck")->getValue().asBoolean();
+            bool sell_passes = getChild<LLUICtrl>("PassCheck")->getValue().asBoolean();
             getChildView("PassCheck")->setEnabled(can_manage_allowed);
             if (sell_passes)
             {
@@ -2760,13 +2760,13 @@ void LLPanelLandAccess::refresh_ui()
             getChildView("GroupCheck")->setEnabled(can_manage_allowed && can_allow_groups);
         }
         getChildView("AccessList")->setEnabled(can_manage_allowed);
-        S32 allowed_list_count = parcel->mAccessList.size();
+        auto allowed_list_count = parcel->mAccessList.size();
         getChildView("add_allowed")->setEnabled(can_manage_allowed && allowed_list_count < PARCEL_MAX_ACCESS_LIST);
-        BOOL has_selected = (mListAccess && mListAccess->getSelectionInterface()->getFirstSelectedIndex() >= 0);
+        bool has_selected = (mListAccess && mListAccess->getSelectionInterface()->getFirstSelectedIndex() >= 0);
         getChildView("remove_allowed")->setEnabled(can_manage_allowed && has_selected);
 
         getChildView("BannedList")->setEnabled(can_manage_banned);
-        S32 banned_list_count = parcel->mBanList.size();
+        auto banned_list_count = parcel->mBanList.size();
         getChildView("add_banned")->setEnabled(can_manage_banned && banned_list_count < PARCEL_MAX_ACCESS_LIST);
         has_selected = (mListBanned && mListBanned->getSelectionInterface()->getFirstSelectedIndex() >= 0);
         getChildView("remove_banned")->setEnabled(can_manage_banned && has_selected);
@@ -2817,8 +2817,8 @@ void LLPanelLandAccess::onCommitGroupCheck(LLUICtrl *ctrl, void *userdata)
         return;
     }
 
-    BOOL use_pass_list = !self->getChild<LLUICtrl>("public_access")->getValue().asBoolean();
-    BOOL use_access_group = self->getChild<LLUICtrl>("GroupCheck")->getValue().asBoolean();
+    bool use_pass_list = !self->getChild<LLUICtrl>("public_access")->getValue().asBoolean();
+    bool use_access_group = self->getChild<LLUICtrl>("GroupCheck")->getValue().asBoolean();
     LLCtrlSelectionInterface* passcombo = self->childGetSelectionInterface("pass_combo");
     if (passcombo)
     {
@@ -2846,30 +2846,30 @@ void LLPanelLandAccess::onCommitAny(LLUICtrl *ctrl, void *userdata)
     }
 
     // Extract data from UI
-    BOOL public_access = self->getChild<LLUICtrl>("public_access")->getValue().asBoolean();
-    BOOL use_access_group = self->getChild<LLUICtrl>("GroupCheck")->getValue().asBoolean();
+    bool public_access = self->getChild<LLUICtrl>("public_access")->getValue().asBoolean();
+    bool use_access_group = self->getChild<LLUICtrl>("GroupCheck")->getValue().asBoolean();
     if (use_access_group)
     {
         std::string group_name;
         if (!gCacheName->getGroupName(parcel->getGroupID(), group_name))
         {
-            use_access_group = FALSE;
+            use_access_group = false;
         }
     }
 
-    BOOL limit_payment = FALSE, limit_age_verified = FALSE;
-    BOOL use_access_list = FALSE;
-    BOOL use_pass_list = FALSE;
+    bool limit_payment = false, limit_age_verified = false;
+    bool use_access_list = false;
+    bool use_pass_list = false;
 
     if (public_access)
     {
-        use_access_list = FALSE;
+        use_access_list = false;
         limit_payment = self->getChild<LLUICtrl>("limit_payment")->getValue().asBoolean();
         limit_age_verified = self->getChild<LLUICtrl>("limit_age_verified")->getValue().asBoolean();
     }
     else
     {
-        use_access_list = TRUE;
+        use_access_list = true;
         use_pass_list = self->getChild<LLUICtrl>("PassCheck")->getValue().asBoolean();
         LLCtrlSelectionInterface* passcombo = self->childGetSelectionInterface("pass_combo");
         if (passcombo)
@@ -2878,7 +2878,7 @@ void LLPanelLandAccess::onCommitAny(LLUICtrl *ctrl, void *userdata)
             {
                 if (passcombo->getSelectedValue().asString() == "group")
                 {
-                    use_access_group = FALSE;
+                    use_access_group = false;
                 }
             }
         }
@@ -2891,7 +2891,7 @@ void LLPanelLandAccess::onCommitAny(LLUICtrl *ctrl, void *userdata)
     parcel->setParcelFlag(PF_USE_ACCESS_GROUP,  use_access_group);
     parcel->setParcelFlag(PF_USE_ACCESS_LIST,   use_access_list);
     parcel->setParcelFlag(PF_USE_PASS_LIST,     use_pass_list);
-    parcel->setParcelFlag(PF_USE_BAN_LIST,      TRUE);
+    parcel->setParcelFlag(PF_USE_BAN_LIST,      true);
     parcel->setParcelFlag(PF_DENY_ANONYMOUS,    limit_payment);
     parcel->setParcelFlag(PF_DENY_AGEUNVERIFIED, limit_age_verified);
 
@@ -2910,7 +2910,7 @@ void LLPanelLandAccess::onClickAddAccess()
     LLView * button = findChild<LLButton>("add_allowed");
     LLFloater * root_floater = gFloaterView->getParentFloater(this);
     LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(
-        boost::bind(&LLPanelLandAccess::callbackAvatarCBAccess, this, _1), FALSE, FALSE, FALSE, root_floater->getName(), button);
+        boost::bind(&LLPanelLandAccess::callbackAvatarCBAccess, this, _1), false, false, false, root_floater->getName(), button);
     if (picker)
     {
         root_floater->addDependentFloater(picker);
@@ -2967,7 +2967,7 @@ void LLPanelLandAccess::onClickAddBanned()
     LLView * button = findChild<LLButton>("add_banned");
     LLFloater * root_floater = gFloaterView->getParentFloater(this);
     LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(
-        boost::bind(&LLPanelLandAccess::callbackAvatarCBBanned, this, _1), TRUE, FALSE, FALSE, root_floater->getName(), button);
+        boost::bind(&LLPanelLandAccess::callbackAvatarCBBanned, this, _1), true, false, false, root_floater->getName(), button);
     if (picker)
     {
         root_floater->addDependentFloater(picker);
@@ -3051,13 +3051,13 @@ LLPanelLandCovenant::~LLPanelLandCovenant()
 {
 }
 
-BOOL LLPanelLandCovenant::postBuild()
+bool LLPanelLandCovenant::postBuild()
 {
     mLastRegionID = LLUUID::null;
     mNextUpdateTime = 0;
     mTextEstateOwner = getChild<LLTextBox>("estate_owner_text");
     mTextEstateOwner->setIsFriendCallback(LLAvatarActions::isFriend);
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -3224,7 +3224,7 @@ LLPanelLandExperiences::LLPanelLandExperiences( LLSafeHandle<LLParcelSelection>&
 }
 
 
-BOOL LLPanelLandExperiences::postBuild()
+bool LLPanelLandExperiences::postBuild()
 {
     mAllowed = setupList("panel_allowed", EXPERIENCE_KEY_TYPE_ALLOWED, AL_ALLOW_EXPERIENCE);
     mBlocked = setupList("panel_blocked", EXPERIENCE_KEY_TYPE_BLOCKED, AL_BLOCK_EXPERIENCE);
@@ -3235,8 +3235,8 @@ BOOL LLPanelLandExperiences::postBuild()
     // no privileged ones
     mBlocked->addFilter(boost::bind(LLPanelExperiencePicker::FilterWithoutProperties, _1, LLExperienceCache::PROPERTY_PRIVILEGED|LLExperienceCache::PROPERTY_GRID));
 
-    getChild<LLLayoutPanel>("trusted_layout_panel")->setVisible(FALSE);
-    getChild<LLTextBox>("experiences_help_text")->setVisible(FALSE);
+    getChild<LLLayoutPanel>("trusted_layout_panel")->setVisible(false);
+    getChild<LLTextBox>("experiences_help_text")->setVisible(false);
     getChild<LLTextBox>("allowed_text_help")->setText(getString("allowed_parcel_text"));
     getChild<LLTextBox>("blocked_text_help")->setText(getString("blocked_parcel_text"));
 
@@ -3291,13 +3291,13 @@ void LLPanelLandExperiences::refreshPanel(LLPanelExperienceListEditor* panel, U3
     if (!parcel || gDisconnected)
     {
         // disable the panel
-        panel->setEnabled(FALSE);
+        panel->setEnabled(false);
         panel->setExperienceIds(LLSD::emptyArray());
     }
     else
     {
         // enable the panel
-        panel->setEnabled(TRUE);
+        panel->setEnabled(true);
         LLAccessEntry::map entries = parcel->getExperienceKeysByType(xp_type);
         LLAccessEntry::map::iterator it = entries.begin();
         LLSD ids = LLSD::emptyArray();
@@ -3326,17 +3326,17 @@ LLPanelLandEnvironment::LLPanelLandEnvironment(LLParcelSelectionHandle& parcel)
 {
 }
 
-BOOL LLPanelLandEnvironment::postBuild()
+bool LLPanelLandEnvironment::postBuild()
 {
     if (!LLPanelEnvironmentInfo::postBuild())
-        return FALSE;
+        return false;
 
     getChild<LLUICtrl>(BTN_USEDEFAULT)->setLabelArg("[USEDEFAULT]", getString(STR_LABEL_USEREGION));
-    getChild<LLUICtrl>(CHK_ALLOWOVERRIDE)->setVisible(FALSE);
-    getChild<LLUICtrl>(PNL_REGION_MSG)->setVisible(FALSE);
-    getChild<LLUICtrl>(PNL_ENVIRONMENT_ALTITUDES)->setVisible(TRUE);
+    getChild<LLUICtrl>(CHK_ALLOWOVERRIDE)->setVisible(false);
+    getChild<LLUICtrl>(PNL_REGION_MSG)->setVisible(false);
+    getChild<LLUICtrl>(PNL_ENVIRONMENT_ALTITUDES)->setVisible(true);
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelLandEnvironment::refresh()
diff --git a/indra/newview/llfloaterland.h b/indra/newview/llfloaterland.h
index d024de199f..3560304566 100644
--- a/indra/newview/llfloaterland.h
+++ b/indra/newview/llfloaterland.h
@@ -82,7 +82,7 @@ public:
     LLParcel* getCurrentSelectedParcel();
 
     virtual void onOpen(const LLSD& key);
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
 private:
     // Does its own instance management, so clients not allowed
@@ -130,7 +130,7 @@ public:
     // we send an update to the simulator, it usually replies with the
     // parcel information, causing the land to be reselected.  This allows
     // us to suppress that behavior.
-    static BOOL sRequestReplyOnUpdate;
+    static bool sRequestReplyOnUpdate;
 };
 
 
@@ -153,7 +153,7 @@ public:
     static void onClickRelease(void*);
     static void onClickReclaim(void*);
     static void onClickBuyPass(void* deselect_when_done);
-    static BOOL enableBuyPass(void*);
+    static bool enableBuyPass(void*);
     static void onCommitAny(LLUICtrl* ctrl, void *userdata);
     static void finalizeCommit(void * userdata);
     static void onForSaleChange(LLUICtrl *ctrl, void * userdata);
@@ -175,10 +175,10 @@ public:
     static void confirmSaleChange(S32 landSize, S32 salePrice, std::string authorizedName, void(*callback)(void*), void* userdata);
     static void callbackConfirmSaleChange(S32 option, void* userdata);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
 protected:
-    BOOL            mUncheckedSell; // True only when verifying land information when land is for sale on sale info change
+    bool            mUncheckedSell; // True only when verifying land information when land is for sale on sale info change
 
     LLTextBox*      mLabelName;
     LLLineEditor*   mEditName;
@@ -274,7 +274,7 @@ public:
     static void onCommitClean(LLUICtrl* caller, void* user_data);
     static void processParcelObjectOwnersReply(LLMessageSystem *msg, void **);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
 protected:
 
@@ -302,12 +302,12 @@ protected:
     LLPointer<LLUIImage>    mIconAvatarOffline;
     LLPointer<LLUIImage>    mIconGroup;
 
-    BOOL            mFirstReply;
+    bool            mFirstReply;
 
     uuid_list_t     mSelectedOwners;
     std::string     mSelectedName;
     S32             mSelectedCount;
-    BOOL            mSelectedIsGroup;
+    bool            mSelectedIsGroup;
 
     LLSafeHandle<LLParcelSelection>&    mParcel;
 };
@@ -319,7 +319,7 @@ class LLPanelLandOptions
 public:
     LLPanelLandOptions(LLSafeHandle<LLParcelSelection>& parcelp);
     virtual ~LLPanelLandOptions();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void draw();
     /*virtual*/ void refresh();
 
@@ -378,7 +378,7 @@ public:
     static void onClickRemoveAccess(void*);
     static void onClickRemoveBanned(void*);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     void onClickAddAccess();
     void onClickAddBanned();
@@ -400,7 +400,7 @@ class LLPanelLandCovenant
 public:
     LLPanelLandCovenant(LLSafeHandle<LLParcelSelection>& parcelp);
     virtual ~LLPanelLandCovenant();
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     void refresh();
     static void updateCovenantText(const std::string& string);
     static void updateEstateName(const std::string& name);
diff --git a/indra/newview/llfloaterlandholdings.cpp b/indra/newview/llfloaterlandholdings.cpp
index d33756c53b..63c05b14f8 100644
--- a/indra/newview/llfloaterlandholdings.cpp
+++ b/indra/newview/llfloaterlandholdings.cpp
@@ -60,24 +60,24 @@ LLFloaterLandHoldings::LLFloaterLandHoldings(const LLSD& key)
 :   LLFloater(key),
     mActualArea(0),
     mBillableArea(0),
-    mFirstPacketReceived(FALSE),
+    mFirstPacketReceived(false),
     mSortColumn(""),
-    mSortAscending(TRUE)
+    mSortAscending(true)
 {
 }
 
-BOOL LLFloaterLandHoldings::postBuild()
+bool LLFloaterLandHoldings::postBuild()
 {
     childSetAction("Teleport", onClickTeleport, this);
     childSetAction("Show on Map", onClickMap, this);
 
     // Grant list
     LLScrollListCtrl* grant_list = getChild<LLScrollListCtrl>("grant list");
-    grant_list->sortByColumnIndex(0, TRUE);
+    grant_list->sortByColumnIndex(0, true);
     grant_list->setDoubleClickCallback(onGrantList, this);
 
-    S32 count = gAgent.mGroups.size();
-    for(S32 i = 0; i < count; ++i)
+    auto count = gAgent.mGroups.size();
+    for(size_t i = 0; i < count; ++i)
     {
         LLUUID id(gAgent.mGroups.at(i).mID);
         LLUIString areastr = getString("area_string");
@@ -99,7 +99,7 @@ BOOL LLFloaterLandHoldings::postBuild()
 
     center();
 
-    return TRUE;
+    return true;
 }
 
 
@@ -139,10 +139,10 @@ void LLFloaterLandHoldings::draw()
 void LLFloaterLandHoldings::refresh()
 {
     LLCtrlSelectionInterface *list = childGetSelectionInterface("parcel list");
-    BOOL enable_btns = FALSE;
+    bool enable_btns = false;
     if (list && list->getFirstSelectedIndex()> -1)
     {
-        enable_btns = TRUE;
+        enable_btns = true;
     }
 
     getChildView("Teleport")->setEnabled(enable_btns);
@@ -183,7 +183,7 @@ void LLFloaterLandHoldings::processPlacesReply(LLMessageSystem* msg, void**)
     // If this is the first packet, clear out the "loading..." indicator
     if (!self->mFirstPacketReceived)
     {
-        self->mFirstPacketReceived = TRUE;
+        self->mFirstPacketReceived = true;
         list->operateOnAll(LLCtrlSelectionInterface::OP_DELETE);
     }
 
diff --git a/indra/newview/llfloaterlandholdings.h b/indra/newview/llfloaterlandholdings.h
index 7e99c9e671..d8a823e49c 100644
--- a/indra/newview/llfloaterlandholdings.h
+++ b/indra/newview/llfloaterlandholdings.h
@@ -41,7 +41,7 @@ public:
     LLFloaterLandHoldings(const LLSD& key);
     virtual ~LLFloaterLandHoldings();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     virtual void onOpen(const LLSD& key);
     virtual void draw();
 
@@ -69,10 +69,10 @@ protected:
 
     // Has a packet of data been received?
     // Used to clear out the mParcelList's "Loading..." indicator
-    BOOL mFirstPacketReceived;
+    bool mFirstPacketReceived;
 
     std::string mSortColumn;
-    BOOL mSortAscending;
+    bool mSortAscending;
 };
 
 #endif
diff --git a/indra/newview/llfloaterlinkreplace.cpp b/indra/newview/llfloaterlinkreplace.cpp
index bd1d8ddae8..c961070787 100644
--- a/indra/newview/llfloaterlinkreplace.cpp
+++ b/indra/newview/llfloaterlinkreplace.cpp
@@ -52,7 +52,7 @@ LLFloaterLinkReplace::~LLFloaterLinkReplace()
 {
 }
 
-BOOL LLFloaterLinkReplace::postBuild()
+bool LLFloaterLinkReplace::postBuild()
 {
     mStartBtn = getChild<LLButton>("btn_start");
     mStartBtn->setCommitCallback(boost::bind(&LLFloaterLinkReplace::onStartClicked, this));
@@ -68,7 +68,7 @@ BOOL LLFloaterLinkReplace::postBuild()
 
     mStatusText = getChild<LLTextBox>("status_text");
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterLinkReplace::onOpen(const LLSD& key)
@@ -199,8 +199,8 @@ void LLFloaterLinkReplace::onStartClickedResponse(const LLSD& notification, cons
                 args["NUM"] = llformat("%d", mRemainingItems);
                 mStatusText->setText(getString("ItemsRemaining", args));
 
-                mStartBtn->setEnabled(FALSE);
-                mRefreshBtn->setEnabled(FALSE);
+                mStartBtn->setEnabled(false);
+                mRefreshBtn->setEnabled(false);
 
                 mEventTimer.start();
                 tick();
@@ -296,8 +296,8 @@ void LLFloaterLinkReplace::decreaseOpenItemCount()
     if (mRemainingItems == 0)
     {
         mStatusText->setText(getString("ReplaceFinished"));
-        mStartBtn->setEnabled(TRUE);
-        mRefreshBtn->setEnabled(TRUE);
+        mStartBtn->setEnabled(true);
+        mRefreshBtn->setEnabled(true);
         mEventTimer.stop();
         LL_INFOS() << "Inventory link replace finished." << LL_ENDL;
     }
@@ -310,7 +310,7 @@ void LLFloaterLinkReplace::decreaseOpenItemCount()
     }
 }
 
-BOOL LLFloaterLinkReplace::tick()
+bool LLFloaterLinkReplace::tick()
 {
     LL_DEBUGS() << "Calling tick - remaining items = " << mRemainingInventoryItems.size() << LL_ENDL;
 
@@ -329,7 +329,7 @@ BOOL LLFloaterLinkReplace::tick()
     }
     processBatch(current_batch);
 
-    return FALSE;
+    return false;
 }
 
 void LLFloaterLinkReplace::processBatch(LLInventoryModel::item_array_t items)
@@ -378,7 +378,7 @@ void LLFloaterLinkReplace::processBatch(LLInventoryModel::item_array_t items)
 
 static LLDefaultChildRegistry::Register<LLInventoryLinkReplaceDropTarget> r("inventory_link_replace_drop_target");
 
-BOOL LLInventoryLinkReplaceDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLInventoryLinkReplaceDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                                            EDragAndDropType cargo_type,
                                                            void* cargo_data,
                                                            EAcceptance* accept,
@@ -411,7 +411,7 @@ BOOL LLInventoryLinkReplaceDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask
         *accept = ACCEPT_NO;
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLInventoryLinkReplaceDropTarget::setItem(LLInventoryItem* item)
diff --git a/indra/newview/llfloaterlinkreplace.h b/indra/newview/llfloaterlinkreplace.h
index 0eee0d6935..7f9f0b59e1 100644
--- a/indra/newview/llfloaterlinkreplace.h
+++ b/indra/newview/llfloaterlinkreplace.h
@@ -56,13 +56,13 @@ public:
         return mDADSignal.connect(cb);
     }
 
-    virtual BOOL postBuild()
+    virtual bool postBuild()
     {
-        setEnabled(FALSE);
+        setEnabled(false);
         return LLLineEditor::postBuild();
     }
 
-    virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    virtual bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                    EDragAndDropType cargo_type,
                                    void* cargo_data,
                                    EAcceptance* accept,
@@ -86,10 +86,10 @@ public:
     LLFloaterLinkReplace(const LLSD& key);
     virtual ~LLFloaterLinkReplace();
 
-    BOOL postBuild();
+    bool postBuild();
     virtual void onOpen(const LLSD& key);
 
-    virtual BOOL tick();
+    virtual bool tick();
 
 private:
     void checkEnableStart();
diff --git a/indra/newview/llfloaterloadprefpreset.cpp b/indra/newview/llfloaterloadprefpreset.cpp
index 77fd37c741..2396e2659a 100644
--- a/indra/newview/llfloaterloadprefpreset.cpp
+++ b/indra/newview/llfloaterloadprefpreset.cpp
@@ -41,7 +41,7 @@ LLFloaterLoadPrefPreset::LLFloaterLoadPrefPreset(const LLSD &key)
 }
 
 // virtual
-BOOL LLFloaterLoadPrefPreset::postBuild()
+bool LLFloaterLoadPrefPreset::postBuild()
 {
     LLFloaterPreference* preferences = LLFloaterReg::getTypedInstance<LLFloaterPreference>("preferences");
     if (preferences)
@@ -52,7 +52,7 @@ BOOL LLFloaterLoadPrefPreset::postBuild()
     getChild<LLButton>("cancel")->setCommitCallback(boost::bind(&LLFloaterLoadPrefPreset::onBtnCancel, this));
     LLPresetsManager::instance().setPresetListChangeCallback(boost::bind(&LLFloaterLoadPrefPreset::onPresetsListChange, this));
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterLoadPrefPreset::onOpen(const LLSD& key)
diff --git a/indra/newview/llfloaterloadprefpreset.h b/indra/newview/llfloaterloadprefpreset.h
index e0b5b4979e..9e7d03f0c4 100644
--- a/indra/newview/llfloaterloadprefpreset.h
+++ b/indra/newview/llfloaterloadprefpreset.h
@@ -38,8 +38,8 @@ class LLFloaterLoadPrefPreset : public LLFloater
 public:
     LLFloaterLoadPrefPreset(const LLSD &key);
 
-    /*virtual*/ BOOL    postBuild();
-    /*virtual*/ void    onOpen(const LLSD& key);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
 
     void onBtnOk();
     void onBtnCancel();
diff --git a/indra/newview/llfloatermap.cpp b/indra/newview/llfloatermap.cpp
index 6b7f52b0d0..83abbb0357 100755
--- a/indra/newview/llfloatermap.cpp
+++ b/indra/newview/llfloatermap.cpp
@@ -75,7 +75,7 @@ LLFloaterMap::~LLFloaterMap()
 {
 }
 
-BOOL LLFloaterMap::postBuild()
+bool LLFloaterMap::postBuild()
 {
     mMap = getChild<LLNetMap>("Net Map");
     mMap->setToolTipMsg(getString("ToolTipMsg"));
@@ -117,13 +117,13 @@ BOOL LLFloaterMap::postBuild()
     return true;
 }
 
-BOOL LLFloaterMap::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLFloaterMap::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     // If floater is minimized, minimap should be shown on doubleclick (STORM-299)
     if (isMinimized())
     {
-        setMinimized(FALSE);
-        return TRUE;
+        setMinimized(false);
+        return true;
     }
 
     LLVector3d pos_global = mMap->viewPosToGlobal(x, y);
@@ -144,7 +144,7 @@ BOOL LLFloaterMap::handleDoubleClick(S32 x, S32 y, MASK mask)
     {
         LLFloaterReg::showInstance("world_map");
     }
-    return TRUE;
+    return true;
 }
 
 void LLFloaterMap::setDirectionPos(LLTextBox *text_box, F32 rotation)
@@ -229,19 +229,19 @@ void LLFloaterMap::draw()
     // Note: we can't just gAgent.check cameraMouselook() because the transition states are wrong.
     if(gAgentCamera.cameraMouselook())
     {
-        setMouseOpaque(FALSE);
-        getDragHandle()->setMouseOpaque(FALSE);
+        setMouseOpaque(false);
+        getDragHandle()->setMouseOpaque(false);
     }
     else
     {
-        setMouseOpaque(TRUE);
-        getDragHandle()->setMouseOpaque(TRUE);
+        setMouseOpaque(true);
+        getDragHandle()->setMouseOpaque(true);
     }
 
     LLFloater::draw();
 }
 
-void LLFloaterMap::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLFloaterMap::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLFloater::reshape(width, height, called_from_parent);
 
diff --git a/indra/newview/llfloatermap.h b/indra/newview/llfloatermap.h
index 333424ba71..1955372567 100644
--- a/indra/newview/llfloatermap.h
+++ b/indra/newview/llfloatermap.h
@@ -42,10 +42,10 @@ public:
     static LLFloaterMap* getInstance();
     virtual ~LLFloaterMap();
 
-    /*virtual*/ BOOL    postBuild();
-    /*virtual*/ BOOL    handleDoubleClick( S32 x, S32 y, MASK mask );
-    /*virtual*/ void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
-    /*virtual*/ void    draw();
+    bool    postBuild() override;
+    bool    handleDoubleClick( S32 x, S32 y, MASK mask ) override;
+    void    reshape(S32 width, S32 height, bool called_from_parent = true) override;
+    void    draw() override;
 
 private:
     void setDirectionPos( LLTextBox* text_box, F32 rotation );
diff --git a/indra/newview/llfloatermarketplacelistings.cpp b/indra/newview/llfloatermarketplacelistings.cpp
index 266648bc54..f20fea01c5 100644
--- a/indra/newview/llfloatermarketplacelistings.cpp
+++ b/indra/newview/llfloatermarketplacelistings.cpp
@@ -62,7 +62,7 @@ LLPanelMarketplaceListings::LLPanelMarketplaceListings()
     mEnableCallbackRegistrar.add("Marketplace.ViewSort.CheckItem",  boost::bind(&LLPanelMarketplaceListings::onViewSortMenuItemCheck,   this, _2));
 }
 
-BOOL LLPanelMarketplaceListings::postBuild()
+bool LLPanelMarketplaceListings::postBuild()
 {
     childSetAction("add_btn", boost::bind(&LLPanelMarketplaceListings::onAddButtonClicked, this));
     childSetAction("audit_btn", boost::bind(&LLPanelMarketplaceListings::onAuditButtonClicked, this));
@@ -71,19 +71,19 @@ BOOL LLPanelMarketplaceListings::postBuild()
     mFilterEditor->setCommitCallback(boost::bind(&LLPanelMarketplaceListings::onFilterEdit, this, _2));
 
     mAuditBtn = getChild<LLButton>("audit_btn");
-    mAuditBtn->setEnabled(FALSE);
+    mAuditBtn->setEnabled(false);
 
     return LLPanel::postBuild();
 }
 
-BOOL LLPanelMarketplaceListings::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLPanelMarketplaceListings::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                        EDragAndDropType cargo_type,
                        void* cargo_data,
                        EAcceptance* accept,
                        std::string& tooltip_msg)
 {
     LLView * handled_view = childrenHandleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data, accept, tooltip_msg);
-    BOOL handled = (handled_view != NULL);
+    bool handled = (handled_view != NULL);
     // Special case the drop zone
     if (handled && (handled_view->getName() == "marketplace_drop_zone"))
     {
@@ -190,7 +190,7 @@ void LLPanelMarketplaceListings::draw()
     LLPanel::draw();
 }
 
-void LLPanelMarketplaceListings::onSelectionChange(LLInventoryPanel *panel, const std::deque<LLFolderViewItem*>& items, BOOL user_action)
+void LLPanelMarketplaceListings::onSelectionChange(LLInventoryPanel *panel, const std::deque<LLFolderViewItem*>& items, bool user_action)
 {
     panel->onSelectionChange(items, user_action);
 }
@@ -251,8 +251,8 @@ void LLPanelMarketplaceListings::onAddButtonClicked()
         if (panel)
         {
             gInventory.notifyObservers();
-            panel->setSelectionByID(new_cat_id, TRUE);
-            panel->getRootFolder()->setNeedsAutoRename(TRUE);
+            panel->setSelectionByID(new_cat_id, true);
+            panel->getRootFolder()->setNeedsAutoRename(true);
         }
     }
     );
@@ -395,7 +395,7 @@ LLFloaterMarketplaceListings::~LLFloaterMarketplaceListings()
     delete mCategoryAddedObserver;
 }
 
-BOOL LLFloaterMarketplaceListings::postBuild()
+bool LLFloaterMarketplaceListings::postBuild()
 {
     mInventoryStatus = getChild<LLTextBox>("marketplace_status");
     mInventoryInitializationInProgress = getChild<LLView>("initialization_progress_indicator");
@@ -420,7 +420,7 @@ BOOL LLFloaterMarketplaceListings::postBuild()
     }
 
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterMarketplaceListings::onClose(bool app_quitting)
@@ -577,7 +577,7 @@ S32 LLFloaterMarketplaceListings::getFolderCount()
         LLInventoryModel::item_array_t * items;
         gInventory.getDirectDescendentsOf(mRootFolderId, cats, items);
 
-        return (cats->size() + items->size());
+        return static_cast<S32>(cats->size() + items->size());
     }
     else
     {
@@ -612,7 +612,7 @@ void LLFloaterMarketplaceListings::updateView()
     {
         // Just show the loading indicator in that case and fetch the data (fetch will be skipped if it's already loading)
         mInventoryInitializationInProgress->setVisible(true);
-        mPanelListings->setVisible(FALSE);
+        mPanelListings->setVisible(false);
         fetchContents();
         return;
     }
@@ -629,13 +629,13 @@ void LLFloaterMarketplaceListings::updateView()
             // We need to rebuild the tabs cleanly the first time we make them visible
             setPanels();
         }
-        mPanelListings->setVisible(TRUE);
-        mInventoryPlaceholder->setVisible(FALSE);
+        mPanelListings->setVisible(true);
+        mInventoryPlaceholder->setVisible(false);
     }
     else
     {
-        mPanelListings->setVisible(FALSE);
-        mInventoryPlaceholder->setVisible(TRUE);
+        mPanelListings->setVisible(false);
+        mInventoryPlaceholder->setVisible(true);
 
         std::string text;
         std::string title;
@@ -704,7 +704,7 @@ bool LLFloaterMarketplaceListings::isAccepted(EAcceptance accept)
     return (accept >= ACCEPT_YES_COPY_SINGLE);
 }
 
-BOOL LLFloaterMarketplaceListings::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLFloaterMarketplaceListings::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                         EDragAndDropType cargo_type,
                                         void* cargo_data,
                                         EAcceptance* accept,
@@ -713,14 +713,14 @@ BOOL LLFloaterMarketplaceListings::handleDragAndDrop(S32 x, S32 y, MASK mask, BO
     // If there's no panel to accept drops or no existing marketplace listings folder, we refuse all drop
     if (!mPanelListings || mRootFolderId.isNull())
     {
-        return FALSE;
+        return false;
     }
 
     tooltip_msg = "";
 
     // Pass to the children
     LLView * handled_view = childrenHandleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data, accept, tooltip_msg);
-    BOOL handled = (handled_view != NULL);
+    bool handled = (handled_view != NULL);
 
     // If no one handled it or it was not accepted and we drop on an empty panel, we try to accept it at the floater level
     // as if it was dropped on the marketplace listings root folder
@@ -737,7 +737,7 @@ BOOL LLFloaterMarketplaceListings::handleDragAndDrop(S32 x, S32 y, MASK mask, BO
     return handled;
 }
 
-BOOL LLFloaterMarketplaceListings::handleHover(S32 x, S32 y, MASK mask)
+bool LLFloaterMarketplaceListings::handleHover(S32 x, S32 y, MASK mask)
 {
     return LLFloater::handleHover(x, y, mask);
 }
@@ -785,9 +785,9 @@ LLFloaterAssociateListing::~LLFloaterAssociateListing()
     gFocusMgr.releaseFocusIfNeeded( this );
 }
 
-BOOL LLFloaterAssociateListing::postBuild()
+bool LLFloaterAssociateListing::postBuild()
 {
-    getChild<LLButton>("OK")->setCommitCallback(boost::bind(&LLFloaterAssociateListing::apply, this, TRUE));
+    getChild<LLButton>("OK")->setCommitCallback(boost::bind(&LLFloaterAssociateListing::apply, this, true));
     getChild<LLButton>("Cancel")->setCommitCallback(boost::bind(&LLFloaterAssociateListing::cancel, this));
     getChild<LLLineEditor>("listing_id")->setPrevalidate(&LLTextValidate::validateNonNegativeS32);
     center();
@@ -795,17 +795,17 @@ BOOL LLFloaterAssociateListing::postBuild()
     return LLFloater::postBuild();
 }
 
-BOOL LLFloaterAssociateListing::handleKeyHere(KEY key, MASK mask)
+bool LLFloaterAssociateListing::handleKeyHere(KEY key, MASK mask)
 {
     if (key == KEY_RETURN && mask == MASK_NONE)
     {
         apply();
-        return TRUE;
+        return true;
     }
     else if (key == KEY_ESCAPE && mask == MASK_NONE)
     {
         cancel();
-        return TRUE;
+        return true;
     }
 
     return LLFloater::handleKeyHere(key, mask);
@@ -827,11 +827,11 @@ void LLFloaterAssociateListing::callback_apply(const LLSD& notification, const L
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
     if (option == 0) // YES
     {
-        apply(FALSE);
+        apply(false);
     }
 }
 
-void LLFloaterAssociateListing::apply(BOOL user_confirm)
+void LLFloaterAssociateListing::apply(bool user_confirm)
 {
     if (mUUID.notNull())
     {
@@ -876,17 +876,17 @@ mEditor(NULL)
 {
 }
 
-BOOL LLFloaterMarketplaceValidation::postBuild()
+bool LLFloaterMarketplaceValidation::postBuild()
 {
     childSetAction("OK", onOK, this);
 
     // This widget displays the validation messages
     mEditor = getChild<LLTextEditor>("validation_text");
-    mEditor->setEnabled(FALSE);
-    mEditor->setFocus(TRUE);
+    mEditor->setEnabled(false);
+    mEditor->setFocus(true);
     mEditor->setValue(LLSD());
 
-    return TRUE;
+    return true;
 }
 
 LLFloaterMarketplaceValidation::~LLFloaterMarketplaceValidation()
@@ -1021,7 +1021,7 @@ LLFloaterItemProperties::~LLFloaterItemProperties()
 {
 }
 
-BOOL LLFloaterItemProperties::postBuild()
+bool LLFloaterItemProperties::postBuild()
 {
     return LLFloater::postBuild();
 }
diff --git a/indra/newview/llfloatermarketplacelistings.h b/indra/newview/llfloatermarketplacelistings.h
index e7bd5031e9..09b3dc64b6 100644
--- a/indra/newview/llfloatermarketplacelistings.h
+++ b/indra/newview/llfloatermarketplacelistings.h
@@ -52,8 +52,8 @@ class LLPanelMarketplaceListings : public LLPanel
 {
 public:
     LLPanelMarketplaceListings();
-    BOOL postBuild();
-    BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    bool postBuild();
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                            EDragAndDropType cargo_type,
                            void* cargo_data,
                            EAcceptance* accept,
@@ -72,7 +72,7 @@ private:
     bool onViewSortMenuItemCheck(const LLSD& userdata);
     void onAddButtonClicked();
     void onAuditButtonClicked();
-    void onSelectionChange(LLInventoryPanel *panel, const std::deque<LLFolderViewItem*>& items, BOOL user_action);
+    void onSelectionChange(LLInventoryPanel *panel, const std::deque<LLFolderViewItem*>& items, bool user_action);
     void onTabChange();
     void onFilterEdit(const std::string& search_string);
 
@@ -99,8 +99,8 @@ public:
     void initializeMarketPlace();
 
     // virtuals
-    BOOL postBuild();
-    BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    bool postBuild();
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                            EDragAndDropType cargo_type,
                            void* cargo_data,
                            EAcceptance* accept,
@@ -108,7 +108,7 @@ public:
 
     void showNotification(const LLNotificationPtr& notification);
 
-    BOOL handleHover(S32 x, S32 y, MASK mask);
+    bool handleHover(S32 x, S32 y, MASK mask);
     void onMouseLeave(S32 x, S32 y, MASK mask);
 
 protected:
@@ -152,8 +152,8 @@ class LLFloaterAssociateListing : public LLFloater
 {
     friend class LLFloaterReg;
 public:
-    virtual BOOL postBuild();
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool postBuild();
+    virtual bool handleKeyHere(KEY key, MASK mask);
 
     static LLFloaterAssociateListing* show(const LLUUID& folder_id);
 
@@ -162,7 +162,7 @@ private:
     virtual ~LLFloaterAssociateListing();
 
     // UI Callbacks
-    void apply(BOOL user_confirm = TRUE);
+    void apply(bool user_confirm = true);
     void cancel();
     void callback_apply(const LLSD& notification, const LLSD& response);
 
@@ -184,7 +184,7 @@ public:
     LLFloaterMarketplaceValidation(const LLSD& key);
     virtual ~LLFloaterMarketplaceValidation();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     virtual void draw();
     virtual void onOpen(const LLSD& key);
 
@@ -219,7 +219,7 @@ public:
     LLFloaterItemProperties(const LLSD& key);
     virtual ~LLFloaterItemProperties();
 
-    BOOL postBuild();
+    bool postBuild();
     virtual void onOpen(const LLSD& key);
 
 private:
diff --git a/indra/newview/llfloatermediasettings.cpp b/indra/newview/llfloatermediasettings.cpp
index c1bbbf29be..2496887c9d 100644
--- a/indra/newview/llfloatermediasettings.cpp
+++ b/indra/newview/llfloatermediasettings.cpp
@@ -80,7 +80,7 @@ LLFloaterMediaSettings::~LLFloaterMediaSettings()
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLFloaterMediaSettings::postBuild()
+bool LLFloaterMediaSettings::postBuild()
 {
     mApplyBtn = getChild<LLButton>("Apply");
     mApplyBtn->setClickedCallback(onBtnApply, this);
@@ -121,7 +121,7 @@ BOOL LLFloaterMediaSettings::postBuild()
 
     sInstance = this;
 
-    return TRUE;
+    return true;
 }
 
 //static
diff --git a/indra/newview/llfloatermediasettings.h b/indra/newview/llfloatermediasettings.h
index ceaea91d23..38730ddc98 100644
--- a/indra/newview/llfloatermediasettings.h
+++ b/indra/newview/llfloatermediasettings.h
@@ -41,9 +41,9 @@ public:
     LLFloaterMediaSettings(const LLSD& key);
     ~LLFloaterMediaSettings();
 
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void onOpen(const LLSD& key);
-    /*virtual*/ void onClose(bool app_quitting);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
+    void onClose(bool app_quitting) override;
 
     static LLFloaterMediaSettings* getInstance();
     static bool instanceExists();
@@ -55,7 +55,7 @@ public:
     const std::string getHomeUrl();
     //bool passesWhiteList( const std::string& test_url );
 
-    virtual void    draw();
+    virtual void    draw() override;
 
     bool mIdenticalHasMediaInfo;
     bool mMultipleMedia;
diff --git a/indra/newview/llfloatermemleak.cpp b/indra/newview/llfloatermemleak.cpp
index fda9eeca51..cd5bea1be4 100644
--- a/indra/newview/llfloatermemleak.cpp
+++ b/indra/newview/llfloatermemleak.cpp
@@ -40,9 +40,9 @@ U32 LLFloaterMemLeak::sMemLeakingSpeed = 0 ; //bytes leaked per frame
 U32 LLFloaterMemLeak::sMaxLeakedMem = 0 ; //maximum allowed leaked memory
 U32 LLFloaterMemLeak::sTotalLeaked = 0 ;
 S32 LLFloaterMemLeak::sStatus = LLFloaterMemLeak::STOP ;
-BOOL LLFloaterMemLeak::sbAllocationFailed = FALSE ;
+bool LLFloaterMemLeak::sbAllocationFailed = false ;
 
-extern BOOL gSimulateMemLeak;
+extern bool gSimulateMemLeak;
 
 LLFloaterMemLeak::LLFloaterMemLeak(const LLSD& key)
     : LLFloater(key)
@@ -57,7 +57,7 @@ LLFloaterMemLeak::LLFloaterMemLeak(const LLSD& key)
 }
 //----------------------------------------------
 
-BOOL LLFloaterMemLeak::postBuild(void)
+bool LLFloaterMemLeak::postBuild(void)
 {
     F32 a, b ;
     a = getChild<LLUICtrl>("leak_speed")->getValue().asReal();
@@ -79,8 +79,8 @@ BOOL LLFloaterMemLeak::postBuild(void)
         sMaxLeakedMem = ((U32)b) << 20 ;
     }
 
-    sbAllocationFailed = FALSE ;
-    return TRUE ;
+    sbAllocationFailed = false ;
+    return true ;
 }
 LLFloaterMemLeak::~LLFloaterMemLeak()
 {
@@ -105,14 +105,14 @@ void LLFloaterMemLeak::release()
 
     sStatus = STOP ;
     sTotalLeaked = 0 ;
-    sbAllocationFailed = FALSE ;
-    gSimulateMemLeak = FALSE;
+    sbAllocationFailed = false ;
+    gSimulateMemLeak = false;
 }
 
 void LLFloaterMemLeak::stop()
 {
     sStatus = STOP ;
-    sbAllocationFailed = TRUE ;
+    sbAllocationFailed = true ;
 }
 
 void LLFloaterMemLeak::idle()
@@ -122,7 +122,7 @@ void LLFloaterMemLeak::idle()
         return ;
     }
 
-    sbAllocationFailed = FALSE ;
+    sbAllocationFailed = false ;
 
     if(RELEASE == sStatus)
     {
@@ -183,7 +183,7 @@ void LLFloaterMemLeak::onChangeMaxMemLeaking()
 void LLFloaterMemLeak::onClickStart()
 {
     sStatus = START ;
-    gSimulateMemLeak = TRUE;
+    gSimulateMemLeak = true;
 }
 
 void LLFloaterMemLeak::onClickStop()
@@ -198,7 +198,7 @@ void LLFloaterMemLeak::onClickRelease()
 
 void LLFloaterMemLeak::onClickClose()
 {
-    setVisible(FALSE);
+    setVisible(false);
 }
 
 void LLFloaterMemLeak::draw()
diff --git a/indra/newview/llfloatermemleak.h b/indra/newview/llfloatermemleak.h
index 6b760cc236..810c946e61 100644
--- a/indra/newview/llfloatermemleak.h
+++ b/indra/newview/llfloatermemleak.h
@@ -35,8 +35,8 @@ class LLFloaterMemLeak : public LLFloater
 public:
     /// initialize all the callbacks for the menu
 
-    virtual BOOL postBuild() ;
-    virtual void draw() ;
+    bool postBuild() override;
+    void draw() override;
 
     void onChangeLeakingSpeed();
     void onChangeMaxMemLeaking();
@@ -67,7 +67,7 @@ private:
     static U32 sMaxLeakedMem ; //maximum allowed leaked memory
     static U32 sTotalLeaked ;
     static S32 sStatus ; //0: stop ; >0: start ; <0: release
-    static BOOL sbAllocationFailed ;
+    static bool sbAllocationFailed ;
 
     std::vector<char*> mLeakedMem ;
 };
diff --git a/indra/newview/llfloatermodelpreview.cpp b/indra/newview/llfloatermodelpreview.cpp
index 0ef7353eac..a91cdba5c0 100644
--- a/indra/newview/llfloatermodelpreview.cpp
+++ b/indra/newview/llfloatermodelpreview.cpp
@@ -75,15 +75,15 @@ LLFloaterModelPreview* LLFloaterModelPreview::sInstance = NULL;
 // should be represented by Retain spinner with values from 1 to 100 by 1.
 // To achieve this, RETAIN_COEFFICIENT is used while creating spinner
 // and when value is requested from spinner.
-const double RETAIN_COEFFICIENT = 100;
+constexpr double RETAIN_COEFFICIENT = 100;
 
 // "Cosine%" decomp parameter has values from 0.9 to 1 by 0.001
 // But according to the UI spec for upload model floater, this parameter
 // should be represented by Smooth combobox with only 10 values.
 // So this const is used as a size of Smooth combobox list.
-const S32 SMOOTH_VALUES_NUMBER = 10;
-const S32 PREVIEW_RENDER_SIZE = 1024;
-const F32 PREVIEW_CAMERA_DISTANCE = 16.f;
+constexpr S32 SMOOTH_VALUES_NUMBER = 10;
+constexpr S32 PREVIEW_RENDER_SIZE = 1024;
+constexpr F32 PREVIEW_CAMERA_DISTANCE = 16.f;
 
 class LLMeshFilePicker : public LLFilePickerThread
 {
@@ -148,11 +148,11 @@ mAvatarTabIndex(0)
 //-----------------------------------------------------------------------------
 // postBuild()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterModelPreview::postBuild()
+bool LLFloaterModelPreview::postBuild()
 {
     if (!LLFloater::postBuild())
     {
-        return FALSE;
+        return false;
     }
 
     childSetCommitCallback("cancel_btn", onCancel, this);
@@ -283,14 +283,14 @@ BOOL LLFloaterModelPreview::postBuild()
         mCalculateBtn->setEnabled(false);
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // reshape()
 //-----------------------------------------------------------------------------
 
-void LLFloaterModelPreview::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLFloaterModelPreview::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLFloaterModelUploadBase::reshape(width, height, called_from_parent);
 
@@ -849,7 +849,7 @@ void LLFloaterModelPreview::draw()
 //-----------------------------------------------------------------------------
 // handleMouseDown()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterModelPreview::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLFloaterModelPreview::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (mPreviewRect.pointInRect(x, y))
     {
@@ -858,7 +858,7 @@ BOOL LLFloaterModelPreview::handleMouseDown(S32 x, S32 y, MASK mask)
         gViewerWindow->hideCursor();
         mLastMouseX = x;
         mLastMouseY = y;
-        return TRUE;
+        return true;
     }
 
     return LLFloater::handleMouseDown(x, y, mask);
@@ -867,9 +867,9 @@ BOOL LLFloaterModelPreview::handleMouseDown(S32 x, S32 y, MASK mask)
 //-----------------------------------------------------------------------------
 // handleMouseUp()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterModelPreview::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLFloaterModelPreview::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    gFocusMgr.setMouseCapture(FALSE);
+    gFocusMgr.setMouseCapture(nullptr);
     gViewerWindow->showCursor();
     return LLFloater::handleMouseUp(x, y, mask);
 }
@@ -877,7 +877,7 @@ BOOL LLFloaterModelPreview::handleMouseUp(S32 x, S32 y, MASK mask)
 //-----------------------------------------------------------------------------
 // handleHover()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterModelPreview::handleHover (S32 x, S32 y, MASK mask)
+bool LLFloaterModelPreview::handleHover (S32 x, S32 y, MASK mask)
 {
     MASK local_mask = mask & ~MASK_ALT;
 
@@ -928,13 +928,13 @@ BOOL LLFloaterModelPreview::handleHover (S32 x, S32 y, MASK mask)
         gViewerWindow->setCursor(UI_CURSOR_TOOLZOOMIN);
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // handleScrollWheel()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterModelPreview::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLFloaterModelPreview::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if (mPreviewRect.pointInRect(x, y) && mModelPreview)
     {
@@ -945,7 +945,7 @@ BOOL LLFloaterModelPreview::handleScrollWheel(S32 x, S32 y, S32 clicks)
     {
         LLFloaterModelUploadBase::handleScrollWheel(x, y, clicks);
     }
-    return TRUE;
+    return true;
 }
 
 /*virtual*/
@@ -1420,7 +1420,7 @@ void LLFloaterModelPreview::updateAvatarTab(bool highlight_overrides)
                 LLModel* model = instance.mModel;
                 const LLMeshSkinInfo *skin = &model->mSkinInfo;
                 U32 joint_count = LLSkinningUtil::getMeshJointCount(skin);
-                U32 bind_count = highlight_overrides ? skin->mAlternateBindMatrix.size() : 0; // simply do not include overrides if data is not needed
+                U32 bind_count = highlight_overrides ? static_cast<U32>(skin->mAlternateBindMatrix.size()) : 0; // simply do not include overrides if data is not needed
                 if (bind_count > 0 && bind_count != joint_count)
                 {
                     std::ostringstream out;
@@ -1544,7 +1544,7 @@ void LLFloaterModelPreview::addStringToLogTab(const std::string& str, bool flash
     }
 
     LLWString text = utf8str_to_wstring(str);
-    S32 add_text_len = text.length() + 1; // newline
+    S32 add_text_len = static_cast<S32>(text.length()) + 1; // newline
     S32 editor_max_len = mUploadLogText->getMaxTextLength();
     if (add_text_len > editor_max_len)
         {
diff --git a/indra/newview/llfloatermodelpreview.h b/indra/newview/llfloatermodelpreview.h
index 20e645532b..6adc084fe8 100644
--- a/indra/newview/llfloatermodelpreview.h
+++ b/indra/newview/llfloatermodelpreview.h
@@ -69,16 +69,16 @@ public:
     LLFloaterModelPreview(const LLSD& key);
     virtual ~LLFloaterModelPreview();
 
-    virtual BOOL postBuild();
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual bool postBuild();
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
 
     void initModelPreview();
     static bool showModelPreview();
 
-    BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    BOOL handleHover(S32 x, S32 y, MASK mask);
-    BOOL handleScrollWheel(S32 x, S32 y, S32 clicks);
+    bool handleMouseDown(S32 x, S32 y, MASK mask);
+    bool handleMouseUp(S32 x, S32 y, MASK mask);
+    bool handleHover(S32 x, S32 y, MASK mask);
+    bool handleScrollWheel(S32 x, S32 y, S32 clicks);
 
     /*virtual*/ void onOpen(const LLSD& key);
     /*virtual*/ void onClose(bool app_quitting);
diff --git a/indra/newview/llfloatermyenvironment.cpp b/indra/newview/llfloatermyenvironment.cpp
index f93af9c312..df4526e69d 100644
--- a/indra/newview/llfloatermyenvironment.cpp
+++ b/indra/newview/llfloatermyenvironment.cpp
@@ -97,7 +97,7 @@ LLFloaterMyEnvironment::~LLFloaterMyEnvironment()
 }
 
 
-BOOL LLFloaterMyEnvironment::postBuild()
+bool LLFloaterMyEnvironment::postBuild()
 {
     mInventoryList = getChild<LLInventoryPanel>(PANEL_SETTINGS);
 
@@ -108,7 +108,7 @@ BOOL LLFloaterMyEnvironment::postBuild()
 
         mInventoryList->setFilterTypes(filter_types);
 
-        mInventoryList->setSelectCallback([this](const std::deque<LLFolderViewItem*>&, BOOL) { onSelectionChange(); });
+        mInventoryList->setSelectCallback([this](const std::deque<LLFolderViewItem*>&, bool) { onSelectionChange(); });
         mInventoryList->setShowFolderState(mShowFolders);
         mInventoryList->setFilterSettingsTypes(mTypeFilter);
     }
@@ -122,8 +122,8 @@ BOOL LLFloaterMyEnvironment::postBuild()
     mFilterEdit->setCommitCallback([this](LLUICtrl*, const LLSD& param){ onFilterEdit(param.asString()); });
 
     childSetCommitCallback(BUTTON_DELETE, [this](LLUICtrl *, void*) { onDeleteSelected(); }, nullptr);
-    mSavedFolderState.setApply(FALSE);
-    return TRUE;
+    mSavedFolderState.setApply(false);
+    return true;
 }
 
 void LLFloaterMyEnvironment::refresh()
@@ -205,7 +205,7 @@ void LLFloaterMyEnvironment::onFilterEdit(const std::string& search_string)
             return;
         }
 
-        mSavedFolderState.setApply(TRUE);
+        mSavedFolderState.setApply(true);
         mInventoryList->getRootFolder()->applyFunctorRecursively(mSavedFolderState);
         // add folder with current item to list of previously opened folders
         LLOpenFoldersWithSelection opener;
@@ -216,7 +216,7 @@ void LLFloaterMyEnvironment::onFilterEdit(const std::string& search_string)
     else if (mInventoryList->getFilterSubString().empty())
     {
         // first letter in search term, save existing folder open state
-        mSavedFolderState.setApply(FALSE);
+        mSavedFolderState.setApply(false);
         mInventoryList->getRootFolder()->applyFunctorRecursively(mSavedFolderState);
     }
 
@@ -247,7 +247,7 @@ void LLFloaterMyEnvironment::onDeleteSelected()
 
             LLPointer<LLViewerInventoryItem> new_item = new LLViewerInventoryItem(inv_item);
             new_item->setParent(trash_id);
-            new_item->updateParentOnServer(FALSE);
+            new_item->updateParentOnServer(false);
             gInventory.updateItem(new_item);
         }
     }
diff --git a/indra/newview/llfloatermyenvironment.h b/indra/newview/llfloatermyenvironment.h
index 54e23c4f6e..8e81b8e5e2 100644
--- a/indra/newview/llfloatermyenvironment.h
+++ b/indra/newview/llfloatermyenvironment.h
@@ -43,7 +43,7 @@ public:
                                     LLFloaterMyEnvironment(const LLSD& key);
     virtual                         ~LLFloaterMyEnvironment();
 
-    virtual BOOL                    postBuild() override;
+    virtual bool                    postBuild() override;
     virtual void                    refresh() override;
 
     virtual void                    onOpen(const LLSD& key) override;
diff --git a/indra/newview/llfloatermyscripts.cpp b/indra/newview/llfloatermyscripts.cpp
index 5426629430..0283855f15 100644
--- a/indra/newview/llfloatermyscripts.cpp
+++ b/indra/newview/llfloatermyscripts.cpp
@@ -36,7 +36,7 @@
 #include "lltrans.h"
 #include "llviewerregion.h"
 
-const S32 SIZE_OF_ONE_KB = 1024;
+constexpr S32 SIZE_OF_ONE_KB = 1024;
 
 LLFloaterMyScripts::LLFloaterMyScripts(const LLSD& seed)
     : LLFloater(seed),
@@ -50,14 +50,14 @@ LLFloaterMyScripts::LLFloaterMyScripts(const LLSD& seed)
 {
 }
 
-BOOL LLFloaterMyScripts::postBuild()
+bool LLFloaterMyScripts::postBuild()
 {
     childSetAction("refresh_list_btn", onClickRefresh, this);
 
     std::string msg_waiting = LLTrans::getString("ScriptLimitsRequestWaiting");
     getChild<LLUICtrl>("loading_text")->setValue(LLSD(msg_waiting));
     mAttachmentDetailsRequested = requestAttachmentDetails();
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -137,7 +137,7 @@ void LLFloaterMyScripts::setAttachmentDetails(LLSD content)
         return;
     }
 
-    S32 number_attachments = content["attachments"].size();
+    S32 number_attachments = static_cast<S32>(content["attachments"].size());
 
     for(int i = 0; i < number_attachments; i++)
     {
@@ -148,7 +148,7 @@ void LLFloaterMyScripts::setAttachmentDetails(LLSD content)
             humanReadableLocation = LLTrans::getString(actualLocation.c_str());
         }
 
-        S32 number_objects = content["attachments"][i]["objects"].size();
+        S32 number_objects = static_cast<S32>(content["attachments"][i]["objects"].size());
         for(int j = 0; j < number_objects; j++)
         {
             LLUUID task_id = content["attachments"][i]["objects"][j]["id"].asUUID();
diff --git a/indra/newview/llfloatermyscripts.h b/indra/newview/llfloatermyscripts.h
index 857a2d72f2..09affabd6a 100644
--- a/indra/newview/llfloatermyscripts.h
+++ b/indra/newview/llfloatermyscripts.h
@@ -35,8 +35,8 @@ class LLFloaterMyScripts : public LLFloater
 public:
     LLFloaterMyScripts(const LLSD& seed);
 
-    BOOL postBuild();
-    /*virtual*/ void onOpen(const LLSD& key);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
     void setAttachmentDetails(LLSD content);
     void setAttachmentSummary(LLSD content);
     bool requestAttachmentDetails();
diff --git a/indra/newview/llfloaternamedesc.cpp b/indra/newview/llfloaternamedesc.cpp
index b47deb838b..01c50d89c5 100644
--- a/indra/newview/llfloaternamedesc.cpp
+++ b/indra/newview/llfloaternamedesc.cpp
@@ -64,7 +64,7 @@ const S32 PREVIEW_HPAD = PREVIEW_RESIZE_HANDLE_SIZE;
 //-----------------------------------------------------------------------------
 LLFloaterNameDesc::LLFloaterNameDesc(const LLSD& filename )
     : LLFloater(filename),
-      mIsAudio(FALSE)
+      mIsAudio(false)
 {
     mFilenameAndPath = filename.asString();
     mFilename = gDirUtilp->getBaseFileName(mFilenameAndPath, false);
@@ -73,7 +73,7 @@ LLFloaterNameDesc::LLFloaterNameDesc(const LLSD& filename )
 //-----------------------------------------------------------------------------
 // postBuild()
 //-----------------------------------------------------------------------------
-BOOL LLFloaterNameDesc::postBuild()
+bool LLFloaterNameDesc::postBuild()
 {
     LLRect r;
 
@@ -135,7 +135,7 @@ BOOL LLFloaterNameDesc::postBuild()
 
     setDefaultBtn("ok_btn");
 
-    return TRUE;
+    return true;
 }
 
 S32 LLFloaterNameDesc::getExpectedUploadCost() const
@@ -186,7 +186,7 @@ void LLFloaterNameDesc::doCommit()
 //-----------------------------------------------------------------------------
 void LLFloaterNameDesc::onBtnOK( )
 {
-    getChildView("ok_btn")->setEnabled(FALSE); // don't allow inadvertent extra uploads
+    getChildView("ok_btn")->setEnabled(false); // don't allow inadvertent extra uploads
 
     LLAssetStorage::LLStoreAssetCallback callback;
     S32 expected_upload_cost = getExpectedUploadCost();
@@ -233,17 +233,17 @@ void LLFloaterNameDesc::onBtnCancel()
 LLFloaterSoundPreview::LLFloaterSoundPreview(const LLSD& filename )
     : LLFloaterNameDesc(filename)
 {
-    mIsAudio = TRUE;
+    mIsAudio = true;
 }
 
-BOOL LLFloaterSoundPreview::postBuild()
+bool LLFloaterSoundPreview::postBuild()
 {
     if (!LLFloaterNameDesc::postBuild())
     {
-        return FALSE;
+        return false;
     }
     getChild<LLUICtrl>("ok_btn")->setCommitCallback(boost::bind(&LLFloaterNameDesc::onBtnOK, this));
-    return TRUE;
+    return true;
 }
 
 
@@ -256,14 +256,14 @@ LLFloaterAnimPreview::LLFloaterAnimPreview(const LLSD& filename )
 {
 }
 
-BOOL LLFloaterAnimPreview::postBuild()
+bool LLFloaterAnimPreview::postBuild()
 {
     if (!LLFloaterNameDesc::postBuild())
     {
-        return FALSE;
+        return false;
     }
     getChild<LLUICtrl>("ok_btn")->setCommitCallback(boost::bind(&LLFloaterNameDesc::onBtnOK, this));
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -273,15 +273,15 @@ BOOL LLFloaterAnimPreview::postBuild()
 LLFloaterScriptPreview::LLFloaterScriptPreview(const LLSD& filename )
     : LLFloaterNameDesc(filename)
 {
-    mIsText = TRUE;
+    mIsText = true;
 }
 
-BOOL LLFloaterScriptPreview::postBuild()
+bool LLFloaterScriptPreview::postBuild()
 {
     if (!LLFloaterNameDesc::postBuild())
     {
-        return FALSE;
+        return false;
     }
     getChild<LLUICtrl>("ok_btn")->setCommitCallback(boost::bind(&LLFloaterNameDesc::onBtnOK, this));
-    return TRUE;
+    return true;
 }
diff --git a/indra/newview/llfloaternamedesc.h b/indra/newview/llfloaternamedesc.h
index 4b3a9b536d..aa5571ccc0 100644
--- a/indra/newview/llfloaternamedesc.h
+++ b/indra/newview/llfloaternamedesc.h
@@ -41,7 +41,7 @@ class LLFloaterNameDesc : public LLFloater
 public:
     LLFloaterNameDesc(const LLSD& filename);
     virtual ~LLFloaterNameDesc();
-    virtual BOOL postBuild();
+    bool postBuild() override;
 
     void        onBtnOK();
     void        onBtnCancel();
@@ -50,10 +50,10 @@ public:
     virtual S32 getExpectedUploadCost() const;
 
 protected:
-    virtual void        onCommit();
+    virtual void        onCommit() override;
 
 protected:
-    BOOL        mIsAudio;
+    bool        mIsAudio;
     bool        mIsText;
 
     std::string     mFilenameAndPath;
@@ -64,21 +64,21 @@ class LLFloaterSoundPreview : public LLFloaterNameDesc
 {
 public:
     LLFloaterSoundPreview(const LLSD& filename );
-    virtual BOOL postBuild();
+    bool postBuild() override;
 };
 
 class LLFloaterAnimPreview : public LLFloaterNameDesc
 {
 public:
     LLFloaterAnimPreview(const LLSD& filename );
-    virtual BOOL postBuild();
+    bool postBuild() override;
 };
 
 class LLFloaterScriptPreview : public LLFloaterNameDesc
 {
 public:
     LLFloaterScriptPreview(const LLSD& filename );
-    virtual BOOL postBuild();
+    bool postBuild() override;
 };
 
 #endif  // LL_LLFLOATERNAMEDESC_H
diff --git a/indra/newview/llfloaternewfeaturenotification.cpp b/indra/newview/llfloaternewfeaturenotification.cpp
index 989b9c3b44..369727ff1e 100644
--- a/indra/newview/llfloaternewfeaturenotification.cpp
+++ b/indra/newview/llfloaternewfeaturenotification.cpp
@@ -38,9 +38,9 @@ LLFloaterNewFeatureNotification::~LLFloaterNewFeatureNotification()
 {
 }
 
-BOOL LLFloaterNewFeatureNotification::postBuild()
+bool LLFloaterNewFeatureNotification::postBuild()
 {
-    setCanDrag(FALSE);
+    setCanDrag(false);
     getChild<LLButton>("close_btn")->setCommitCallback(boost::bind(&LLFloaterNewFeatureNotification::onCloseBtn, this));
 
     const std::string title_txt = "title_txt";
@@ -57,7 +57,7 @@ BOOL LLFloaterNewFeatureNotification::postBuild()
         reshape(rect.getWidth() + 90, rect.getHeight() + 45);
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterNewFeatureNotification::onOpen(const LLSD& key)
diff --git a/indra/newview/llfloaternewfeaturenotification.h b/indra/newview/llfloaternewfeaturenotification.h
index 42f624a04a..5afb8e71e8 100644
--- a/indra/newview/llfloaternewfeaturenotification.h
+++ b/indra/newview/llfloaternewfeaturenotification.h
@@ -34,7 +34,7 @@ class LLFloaterNewFeatureNotification:
 {
     friend class LLFloaterReg;
 public:
-    BOOL postBuild() override;
+    bool postBuild() override;
     void onOpen(const LLSD& key) override;
 
 private:
diff --git a/indra/newview/llfloaternotificationsconsole.cpp b/indra/newview/llfloaternotificationsconsole.cpp
index dbeb5ca573..a819b30e30 100644
--- a/indra/newview/llfloaternotificationsconsole.cpp
+++ b/indra/newview/llfloaternotificationsconsole.cpp
@@ -42,7 +42,7 @@ class LLNotificationChannelPanel : public LLLayoutPanel
 public:
     LLNotificationChannelPanel(const Params& p);
     ~LLNotificationChannelPanel();
-    BOOL postBuild();
+    bool postBuild();
 
 private:
     bool update(const LLSD& payload);
@@ -72,7 +72,7 @@ LLNotificationChannelPanel::~LLNotificationChannelPanel()
     }
 }
 
-BOOL LLNotificationChannelPanel::postBuild()
+bool LLNotificationChannelPanel::postBuild()
 {
     LLButton* header_button = getChild<LLButton>("header");
     header_button->setLabel(mChannelPtr->getName());
@@ -83,7 +83,7 @@ BOOL LLNotificationChannelPanel::postBuild()
     LLScrollListCtrl* scroll = getChild<LLScrollListCtrl>("notifications_list");
     scroll->setDoubleClickCallback(onClickNotification, this);
     scroll->setRect(LLRect( getRect().mLeft, getRect().mTop, getRect().mRight, 0));
-    return TRUE;
+    return true;
 }
 
 //static
@@ -117,7 +117,7 @@ void LLNotificationChannelPanel::onClickNotification(void* user_data)
         void* data = firstselected->getUserdata();
         if (data)
         {
-            gFloaterView->getParentFloater(self)->addDependentFloater(new LLFloaterNotification((LLNotification*)data), TRUE);
+            gFloaterView->getParentFloater(self)->addDependentFloater(new LLFloaterNotification((LLNotification*)data), true);
         }
     }
 }
@@ -154,7 +154,7 @@ LLFloaterNotificationConsole::LLFloaterNotificationConsole(const LLSD& key)
     mCommitCallbackRegistrar.add("ClickAdd",     boost::bind(&LLFloaterNotificationConsole::onClickAdd, this));
 }
 
-BOOL LLFloaterNotificationConsole::postBuild()
+bool LLFloaterNotificationConsole::postBuild()
 {
     // these are in the order of processing
     addChannel("Unexpired");
@@ -181,7 +181,7 @@ BOOL LLFloaterNotificationConsole::postBuild()
     }
     notifications->sortByName();
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterNotificationConsole::addChannel(const std::string& name, bool open)
@@ -240,7 +240,7 @@ LLFloaterNotification::LLFloaterNotification(LLNotification* note)
     buildFromFile("floater_notification.xml");
 }
 
-BOOL LLFloaterNotification::postBuild()
+bool LLFloaterNotification::postBuild()
 {
     setTitle(mNote->getName());
     getChild<LLUICtrl>("payload")->setValue(mNote->getMessage());
@@ -250,7 +250,7 @@ BOOL LLFloaterNotification::postBuild()
     LLNotificationFormPtr form(mNote->getForm());
     if(!form)
     {
-        return TRUE;
+        return true;
     }
 
     responses_combo->setCommitCallback(onCommitResponse, this);
@@ -264,7 +264,7 @@ BOOL LLFloaterNotification::postBuild()
         response_list->addSimpleElement(text);
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterNotification::respond()
diff --git a/indra/newview/llfloaternotificationsconsole.h b/indra/newview/llfloaternotificationsconsole.h
index 75161f8096..d644f74e13 100644
--- a/indra/newview/llfloaternotificationsconsole.h
+++ b/indra/newview/llfloaternotificationsconsole.h
@@ -41,7 +41,7 @@ class LLFloaterNotificationConsole :
 public:
 
     // LLPanel
-    BOOL postBuild();
+    bool postBuild();
 
     void addChannel(const std::string& type, bool open = false);
     void updateResizeLimits(LLLayoutStack &stack);
@@ -64,7 +64,7 @@ public:
     LLFloaterNotification(LLNotification* note);
 
     // LLPanel
-    BOOL postBuild();
+    bool postBuild();
     void respond();
 
 private:
diff --git a/indra/newview/llfloaternotificationstabbed.cpp b/indra/newview/llfloaternotificationstabbed.cpp
index 28ef403cf7..e571011acf 100644
--- a/indra/newview/llfloaternotificationstabbed.cpp
+++ b/indra/newview/llfloaternotificationstabbed.cpp
@@ -58,7 +58,7 @@ LLFloaterNotificationsTabbed::LLFloaterNotificationsTabbed(const LLSD& key) : LL
 }
 
 //---------------------------------------------------------------------------------
-BOOL LLFloaterNotificationsTabbed::postBuild()
+bool LLFloaterNotificationsTabbed::postBuild()
 {
     mGroupInviteMessageList = getChild<LLNotificationListView>("group_invite_notification_list");
     mGroupNoticeMessageList = getChild<LLNotificationListView>("group_notice_notification_list");
@@ -78,14 +78,14 @@ BOOL LLFloaterNotificationsTabbed::postBuild()
 
     // get a corresponding channel
     initChannel();
-    BOOL rv = LLTransientDockableFloater::postBuild();
+    bool rv = LLTransientDockableFloater::postBuild();
 
     setTitle(getString("title_notification_tabbed_window"));
     return rv;
 }
 
 //---------------------------------------------------------------------------------
-void LLFloaterNotificationsTabbed::setMinimized(BOOL minimize)
+void LLFloaterNotificationsTabbed::setMinimized(bool minimize)
 {
     LLTransientDockableFloater::setMinimized(minimize);
 }
@@ -101,7 +101,7 @@ void LLFloaterNotificationsTabbed::handleReshape(const LLRect& rect, bool by_use
 void LLFloaterNotificationsTabbed::onStartUpToastClick(S32 x, S32 y, MASK mask)
 {
     // just set floater visible. Screen channels will be cleared.
-    setVisible(TRUE);
+    setVisible(true);
 }
 
 //---------------------------------------------------------------------------------
@@ -140,7 +140,7 @@ void LLFloaterNotificationsTabbed::removeItemByID(const LLUUID& id, std::string
     // hide chiclet window if there are no items left
     if(isWindowEmpty())
     {
-        setVisible(FALSE);
+        setVisible(false);
     }
 }
 
@@ -168,7 +168,7 @@ void LLFloaterNotificationsTabbed::initChannel()
 }
 
 //---------------------------------------------------------------------------------
-void LLFloaterNotificationsTabbed::setVisible(BOOL visible)
+void LLFloaterNotificationsTabbed::setVisible(bool visible)
 {
     if (visible)
     {
@@ -186,7 +186,7 @@ void LLFloaterNotificationsTabbed::setVisible(BOOL visible)
     }
 
     // do not show empty window
-    if (NULL == mNotificationsSeparator || isWindowEmpty()) visible = FALSE;
+    if (NULL == mNotificationsSeparator || isWindowEmpty()) visible = false;
 
     LLTransientDockableFloater::setVisible(visible);
 
@@ -356,7 +356,7 @@ void LLFloaterNotificationsTabbed::collapseAllOnCurrentTab()
     {
         LLNotificationListItem* notify_item = dynamic_cast<LLNotificationListItem*>(*iter);
         if (notify_item)
-            notify_item->setExpanded(FALSE);
+            notify_item->setExpanded(false);
     }
 }
 
@@ -411,7 +411,7 @@ void LLFloaterNotificationsTabbed::onItemClick(LLNotificationListItem* item)
     }
     else
     {
-        item->setExpanded(TRUE);
+        item->setExpanded(true);
     }
 }
 
diff --git a/indra/newview/llfloaternotificationstabbed.h b/indra/newview/llfloaternotificationstabbed.h
index 4cdcce82c1..87e880c8d2 100644
--- a/indra/newview/llfloaternotificationstabbed.h
+++ b/indra/newview/llfloaternotificationstabbed.h
@@ -72,7 +72,7 @@ public:
 
     LLFloaterNotificationsTabbed(const LLSD& key);
     virtual ~LLFloaterNotificationsTabbed();
-    BOOL postBuild();
+    bool postBuild();
 
     // other interface functions
     // check is window empty
@@ -85,11 +85,11 @@ public:
     void updateNotificationCounter(S32 panelIndex, S32 counterValue, std::string stringName);
 
     // Operating with outfit
-    virtual void setVisible(BOOL visible);
+    virtual void setVisible(bool visible);
 
     /*virtual*/ void    setDocked(bool docked, bool pop_on_undock = true);
     // override LLFloater's minimization according to EXT-1216
-    /*virtual*/ void    setMinimized(BOOL minimize);
+    /*virtual*/ void    setMinimized(bool minimize);
     /*virtual*/ void    handleReshape(const LLRect& rect, bool by_user);
 
     void onStartUpToastClick(S32 x, S32 y, MASK mask);
@@ -101,8 +101,8 @@ public:
     static LLFloaterNotificationsTabbed* getInstance(const LLSD& key = LLSD());
 
     // size constants for the window and for its elements
-    static const S32 MAX_WINDOW_HEIGHT      = 200;
-    static const S32 MIN_WINDOW_WIDTH       = 318;
+    static constexpr S32 MAX_WINDOW_HEIGHT      = 200;
+    static constexpr S32 MIN_WINDOW_WIDTH       = 318;
 
 private:
     // init Window's channel
diff --git a/indra/newview/llfloaterobjectweights.cpp b/indra/newview/llfloaterobjectweights.cpp
index 090b0657d1..26b7304b9a 100644
--- a/indra/newview/llfloaterobjectweights.cpp
+++ b/indra/newview/llfloaterobjectweights.cpp
@@ -84,7 +84,7 @@ LLFloaterObjectWeights::~LLFloaterObjectWeights()
 }
 
 // virtual
-BOOL LLFloaterObjectWeights::postBuild()
+bool LLFloaterObjectWeights::postBuild()
 {
     mSelectedObjects = getChild<LLTextBox>("objects");
     mSelectedPrims = getChild<LLTextBox>("prims");
@@ -99,7 +99,7 @@ BOOL LLFloaterObjectWeights::postBuild()
     mRemainingCapacity = getChild<LLTextBox>("remaining_capacity");
     mTotalCapacity = getChild<LLTextBox>("total_capacity");
 
-    return TRUE;
+    return true;
 }
 
 // virtual
diff --git a/indra/newview/llfloaterobjectweights.h b/indra/newview/llfloaterobjectweights.h
index 10e790f5aa..3b999f6b9b 100644
--- a/indra/newview/llfloaterobjectweights.h
+++ b/indra/newview/llfloaterobjectweights.h
@@ -58,7 +58,7 @@ public:
     LLFloaterObjectWeights(const LLSD& key);
     ~LLFloaterObjectWeights();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     /*virtual*/ void onOpen(const LLSD& key);
 
diff --git a/indra/newview/llfloateropenobject.cpp b/indra/newview/llfloateropenobject.cpp
index 408eac6289..b06e35f65d 100644
--- a/indra/newview/llfloateropenobject.cpp
+++ b/indra/newview/llfloateropenobject.cpp
@@ -53,7 +53,7 @@
 LLFloaterOpenObject::LLFloaterOpenObject(const LLSD& key)
 :   LLFloater(key),
     mPanelInventoryObject(NULL),
-    mDirty(TRUE)
+    mDirty(true)
 {
     mCommitCallbackRegistrar.add("OpenObject.MoveToInventory",  boost::bind(&LLFloaterOpenObject::onClickMoveToInventory, this));
     mCommitCallbackRegistrar.add("OpenObject.Cancel",           boost::bind(&LLFloaterOpenObject::onClickCancel, this));
@@ -65,13 +65,13 @@ LLFloaterOpenObject::~LLFloaterOpenObject()
 }
 
 // virtual
-BOOL LLFloaterOpenObject::postBuild()
+bool LLFloaterOpenObject::postBuild()
 {
     getChild<LLUICtrl>("object_name")->setTextArg("[DESC]", std::string("Object") ); // *Note: probably do not want to translate this
     mPanelInventoryObject = getChild<LLPanelObjectInventory>("object_contents");
 
     refresh();
-    return TRUE;
+    return true;
 }
 
 void LLFloaterOpenObject::onOpen(const LLSD& key)
@@ -97,18 +97,18 @@ void LLFloaterOpenObject::refresh()
     mPanelInventoryObject->refresh();
 
     std::string name = "";
-    BOOL enabled = FALSE;
+    bool enabled = false;
 
     LLSelectNode* node = mObjectSelection->getFirstRootNode();
     if (node)
     {
         name = node->mName;
-        enabled = TRUE;
+        enabled = true;
     }
     else
     {
         name = "";
-        enabled = FALSE;
+        enabled = false;
     }
 
     getChild<LLUICtrl>("object_name")->setTextArg("[DESC]", name);
@@ -123,14 +123,14 @@ void LLFloaterOpenObject::draw()
     if (mDirty)
     {
         refresh();
-        mDirty = FALSE;
+        mDirty = false;
     }
     LLFloater::draw();
 }
 
 void LLFloaterOpenObject::dirty()
 {
-    mDirty = TRUE;
+    mDirty = true;
 }
 
 
@@ -184,9 +184,9 @@ void LLFloaterOpenObject::callbackCreateInventoryCategory(const LLUUID& category
 
     // Copy and/or move the items into the newly created folder.
     // Ignore any "you're going to break this item" messages.
-    BOOL success = move_inv_category_world_to_agent(object_id,
+    bool success = move_inv_category_world_to_agent(object_id,
                                                     category_id,
-                                                    TRUE,
+                                                    true,
                                                     [](S32 result, void* data, const LLMoveInv*)
                                                     {
                                                         callbackMoveInventory(result, data);
diff --git a/indra/newview/llfloateropenobject.h b/indra/newview/llfloateropenobject.h
index 58d491a5d7..3670dbc5e6 100644
--- a/indra/newview/llfloateropenobject.h
+++ b/indra/newview/llfloateropenobject.h
@@ -55,7 +55,7 @@ public:
 
 protected:
 
-    /*virtual*/ BOOL    postBuild();
+    /*virtual*/ bool    postBuild();
     void refresh();
     void draw();
     virtual void onOpen(const LLSD& key);
@@ -76,7 +76,7 @@ protected:
 
     LLPanelObjectInventory* mPanelInventoryObject;
     LLSafeHandle<LLObjectSelection> mObjectSelection;
-    BOOL mDirty;
+    bool mDirty;
 };
 
 #endif
diff --git a/indra/newview/llfloaterpathfindingcharacters.cpp b/indra/newview/llfloaterpathfindingcharacters.cpp
index b6775f3061..848672b1fc 100644
--- a/indra/newview/llfloaterpathfindingcharacters.cpp
+++ b/indra/newview/llfloaterpathfindingcharacters.cpp
@@ -65,17 +65,17 @@ void LLFloaterPathfindingCharacters::onClose(bool pIsAppQuitting)
     LLFloaterPathfindingObjects::onClose( pIsAppQuitting );
 }
 
-BOOL LLFloaterPathfindingCharacters::isShowPhysicsCapsule() const
+bool LLFloaterPathfindingCharacters::isShowPhysicsCapsule() const
 {
     return mShowPhysicsCapsuleCheckBox->get();
 }
 
-void LLFloaterPathfindingCharacters::setShowPhysicsCapsule(BOOL pIsShowPhysicsCapsule)
+void LLFloaterPathfindingCharacters::setShowPhysicsCapsule(bool pIsShowPhysicsCapsule)
 {
     mShowPhysicsCapsuleCheckBox->set(pIsShowPhysicsCapsule && (LLPathingLib::getInstance() != NULL));
 }
 
-BOOL LLFloaterPathfindingCharacters::isPhysicsCapsuleEnabled(LLUUID& id, LLVector3& pos, LLQuaternion& rot) const
+bool LLFloaterPathfindingCharacters::isPhysicsCapsuleEnabled(LLUUID& id, LLVector3& pos, LLQuaternion& rot) const
 {
     id = mSelectedCharacterId;
     // Physics capsule is enable if the checkbox is enabled and if we can get the required render
@@ -117,7 +117,7 @@ LLFloaterPathfindingCharacters::~LLFloaterPathfindingCharacters()
 {
 }
 
-BOOL LLFloaterPathfindingCharacters::postBuild()
+bool LLFloaterPathfindingCharacters::postBuild()
 {
     mBeaconColor = LLUIColorTable::getInstance()->getColor("PathfindingCharacterBeaconColor");
 
@@ -195,7 +195,7 @@ void LLFloaterPathfindingCharacters::onShowPhysicsCapsuleClicked()
     {
         if (isShowPhysicsCapsule())
         {
-            setShowPhysicsCapsule(FALSE);
+            setShowPhysicsCapsule(false);
         }
     }
     else
@@ -246,7 +246,7 @@ void LLFloaterPathfindingCharacters::updateStateOnDisplayControls()
     mShowPhysicsCapsuleCheckBox->setEnabled(isEditEnabled);
     if (!isEditEnabled)
     {
-        setShowPhysicsCapsule(FALSE);
+        setShowPhysicsCapsule(false);
     }
 }
 
@@ -284,7 +284,7 @@ void LLFloaterPathfindingCharacters::showCapsule() const
             if (LLPathingLib::getInstance() != NULL)
             {
                 LLPathingLib::getInstance()->createPhysicsCapsuleRep(character->getLength(), character->getRadius(),
-                    character->isHorizontal(), character->getUUID());
+                    (BOOL)character->isHorizontal(), character->getUUID());
             }
         }
 
diff --git a/indra/newview/llfloaterpathfindingcharacters.h b/indra/newview/llfloaterpathfindingcharacters.h
index 4f9c7aadc0..1215bb72ec 100644
--- a/indra/newview/llfloaterpathfindingcharacters.h
+++ b/indra/newview/llfloaterpathfindingcharacters.h
@@ -44,10 +44,10 @@ class LLFloaterPathfindingCharacters : public LLFloaterPathfindingObjects
 public:
     virtual void                                    onClose(bool pIsAppQuitting);
 
-    BOOL                                            isShowPhysicsCapsule() const;
-    void                                            setShowPhysicsCapsule(BOOL pIsShowPhysicsCapsule);
+    bool                                            isShowPhysicsCapsule() const;
+    void                                            setShowPhysicsCapsule(bool pIsShowPhysicsCapsule);
 
-    BOOL                                            isPhysicsCapsuleEnabled(LLUUID& id, LLVector3& pos, LLQuaternion& rot) const;
+    bool                                            isPhysicsCapsuleEnabled(LLUUID& id, LLVector3& pos, LLQuaternion& rot) const;
 
     static void                                     openCharactersWithSelectedObjects();
     static LLHandle<LLFloaterPathfindingCharacters> getInstanceHandle();
@@ -58,7 +58,7 @@ protected:
     LLFloaterPathfindingCharacters(const LLSD& pSeed);
     virtual ~LLFloaterPathfindingCharacters();
 
-    virtual BOOL                       postBuild();
+    virtual bool                       postBuild();
 
     virtual void                       requestGetObjects();
 
diff --git a/indra/newview/llfloaterpathfindingconsole.cpp b/indra/newview/llfloaterpathfindingconsole.cpp
index f2dffb2b67..994a5c0c02 100644
--- a/indra/newview/llfloaterpathfindingconsole.cpp
+++ b/indra/newview/llfloaterpathfindingconsole.cpp
@@ -30,10 +30,6 @@
 
 #include "llfloaterpathfindingconsole.h"
 
-#include <vector>
-
-#include <boost/signals2.hpp>
-
 #include "llagent.h"
 #include "llbutton.h"
 #include "llcheckboxctrl.h"
@@ -46,7 +42,6 @@
 #include "llpanel.h"
 #include "llpathfindingnavmeshzone.h"
 #include "llpathfindingpathtool.h"
-#include "llpathinglib.h"
 #include "llsliderctrl.h"
 #include "llsd.h"
 #include "lltabcontainer.h"
@@ -95,7 +90,7 @@ LLHandle<LLFloaterPathfindingConsole> LLFloaterPathfindingConsole::sInstanceHand
 // LLFloaterPathfindingConsole
 //---------------------------------------------------------------------------
 
-BOOL LLFloaterPathfindingConsole::postBuild()
+bool LLFloaterPathfindingConsole::postBuild()
 {
     mViewTestTabContainer = findChild<LLTabContainer>("view_test_tab_container");
     llassert(mViewTestTabContainer != NULL);
@@ -297,94 +292,94 @@ LLHandle<LLFloaterPathfindingConsole> LLFloaterPathfindingConsole::getInstanceHa
     return sInstanceHandle;
 }
 
-BOOL LLFloaterPathfindingConsole::isRenderNavMesh() const
+bool LLFloaterPathfindingConsole::isRenderNavMesh() const
 {
     return mShowNavMeshCheckBox->get();
 }
 
-void LLFloaterPathfindingConsole::setRenderNavMesh(BOOL pIsRenderNavMesh)
+void LLFloaterPathfindingConsole::setRenderNavMesh(bool pIsRenderNavMesh)
 {
     mShowNavMeshCheckBox->set(pIsRenderNavMesh);
     setNavMeshRenderState();
 }
 
-BOOL LLFloaterPathfindingConsole::isRenderWalkables() const
+bool LLFloaterPathfindingConsole::isRenderWalkables() const
 {
     return mShowWalkablesCheckBox->get();
 }
 
-void LLFloaterPathfindingConsole::setRenderWalkables(BOOL pIsRenderWalkables)
+void LLFloaterPathfindingConsole::setRenderWalkables(bool pIsRenderWalkables)
 {
     mShowWalkablesCheckBox->set(pIsRenderWalkables);
 }
 
-BOOL LLFloaterPathfindingConsole::isRenderStaticObstacles() const
+bool LLFloaterPathfindingConsole::isRenderStaticObstacles() const
 {
     return mShowStaticObstaclesCheckBox->get();
 }
 
-void LLFloaterPathfindingConsole::setRenderStaticObstacles(BOOL pIsRenderStaticObstacles)
+void LLFloaterPathfindingConsole::setRenderStaticObstacles(bool pIsRenderStaticObstacles)
 {
     mShowStaticObstaclesCheckBox->set(pIsRenderStaticObstacles);
 }
 
-BOOL LLFloaterPathfindingConsole::isRenderMaterialVolumes() const
+bool LLFloaterPathfindingConsole::isRenderMaterialVolumes() const
 {
     return mShowMaterialVolumesCheckBox->get();
 }
 
-void LLFloaterPathfindingConsole::setRenderMaterialVolumes(BOOL pIsRenderMaterialVolumes)
+void LLFloaterPathfindingConsole::setRenderMaterialVolumes(bool pIsRenderMaterialVolumes)
 {
     mShowMaterialVolumesCheckBox->set(pIsRenderMaterialVolumes);
 }
 
-BOOL LLFloaterPathfindingConsole::isRenderExclusionVolumes() const
+bool LLFloaterPathfindingConsole::isRenderExclusionVolumes() const
 {
     return mShowExclusionVolumesCheckBox->get();
 }
 
-void LLFloaterPathfindingConsole::setRenderExclusionVolumes(BOOL pIsRenderExclusionVolumes)
+void LLFloaterPathfindingConsole::setRenderExclusionVolumes(bool pIsRenderExclusionVolumes)
 {
     mShowExclusionVolumesCheckBox->set(pIsRenderExclusionVolumes);
 }
 
-BOOL LLFloaterPathfindingConsole::isRenderWorld() const
+bool LLFloaterPathfindingConsole::isRenderWorld() const
 {
     return mShowWorldCheckBox->get();
 }
 
-void LLFloaterPathfindingConsole::setRenderWorld(BOOL pIsRenderWorld)
+void LLFloaterPathfindingConsole::setRenderWorld(bool pIsRenderWorld)
 {
     mShowWorldCheckBox->set(pIsRenderWorld);
     setWorldRenderState();
 }
 
-BOOL LLFloaterPathfindingConsole::isRenderWorldMovablesOnly() const
+bool LLFloaterPathfindingConsole::isRenderWorldMovablesOnly() const
 {
     return (mShowWorldCheckBox->get() && mShowWorldMovablesOnlyCheckBox->get());
 }
 
-void LLFloaterPathfindingConsole::setRenderWorldMovablesOnly(BOOL pIsRenderWorldMovablesOnly)
+void LLFloaterPathfindingConsole::setRenderWorldMovablesOnly(bool pIsRenderWorldMovablesOnly)
 {
     mShowWorldMovablesOnlyCheckBox->set(pIsRenderWorldMovablesOnly);
 }
 
-BOOL LLFloaterPathfindingConsole::isRenderWaterPlane() const
+bool LLFloaterPathfindingConsole::isRenderWaterPlane() const
 {
     return mShowRenderWaterPlaneCheckBox->get();
 }
 
-void LLFloaterPathfindingConsole::setRenderWaterPlane(BOOL pIsRenderWaterPlane)
+void LLFloaterPathfindingConsole::setRenderWaterPlane(bool pIsRenderWaterPlane)
 {
     mShowRenderWaterPlaneCheckBox->set(pIsRenderWaterPlane);
 }
 
-BOOL LLFloaterPathfindingConsole::isRenderXRay() const
+bool LLFloaterPathfindingConsole::isRenderXRay() const
 {
     return mShowXRayCheckBox->get();
 }
 
-void LLFloaterPathfindingConsole::setRenderXRay(BOOL pIsRenderXRay)
+void LLFloaterPathfindingConsole::setRenderXRay(bool pIsRenderXRay)
 {
     mShowXRayCheckBox->set(pIsRenderXRay);
 }
@@ -603,8 +598,8 @@ void LLFloaterPathfindingConsole::handleNavMeshZoneStatus(LLPathfindingNavMeshZo
 void LLFloaterPathfindingConsole::onRegionBoundaryCross()
 {
     initializeNavMeshZoneForCurrentRegion();
-    setRenderWorld(TRUE);
-    setRenderWorldMovablesOnly(FALSE);
+    setRenderWorld(true);
+    setRenderWorldMovablesOnly(false);
 }
 
 void LLFloaterPathfindingConsole::onPathEvent()
@@ -644,15 +639,15 @@ void LLFloaterPathfindingConsole::onPathEvent()
 void LLFloaterPathfindingConsole::setDefaultInputs()
 {
     mViewTestTabContainer->selectTab(XUI_VIEW_TAB_INDEX);
-    setRenderWorld(TRUE);
-    setRenderWorldMovablesOnly(FALSE);
-    setRenderNavMesh(FALSE);
-    setRenderWalkables(FALSE);
-    setRenderMaterialVolumes(FALSE);
-    setRenderStaticObstacles(FALSE);
-    setRenderExclusionVolumes(FALSE);
-    setRenderWaterPlane(FALSE);
-    setRenderXRay(FALSE);
+    setRenderWorld(true);
+    setRenderWorldMovablesOnly(false);
+    setRenderNavMesh(false);
+    setRenderWalkables(false);
+    setRenderMaterialVolumes(false);
+    setRenderStaticObstacles(false);
+    setRenderExclusionVolumes(false);
+    setRenderWaterPlane(false);
+    setRenderXRay(false);
 }
 
 void LLFloaterPathfindingConsole::setConsoleState(EConsoleState pConsoleState)
@@ -665,18 +660,18 @@ void LLFloaterPathfindingConsole::setConsoleState(EConsoleState pConsoleState)
 
 void LLFloaterPathfindingConsole::setWorldRenderState()
 {
-    BOOL renderWorld = isRenderWorld();
+    bool renderWorld = isRenderWorld();
 
     mShowWorldMovablesOnlyCheckBox->setEnabled(renderWorld && mShowWorldCheckBox->getEnabled());
     if (!renderWorld)
     {
-        mShowWorldMovablesOnlyCheckBox->set(FALSE);
+        mShowWorldMovablesOnlyCheckBox->set(false);
     }
 }
 
 void LLFloaterPathfindingConsole::setNavMeshRenderState()
 {
-    BOOL renderNavMesh = isRenderNavMesh();
+    bool renderNavMesh = isRenderNavMesh();
 
     mShowNavMeshWalkabilityLabel->setEnabled(renderNavMesh);
     mShowNavMeshWalkabilityComboBox->setEnabled(renderNavMesh);
@@ -702,106 +697,106 @@ void LLFloaterPathfindingConsole::updateControlsOnConsoleState()
     case kConsoleStateRegionNotEnabled :
     case kConsoleStateRegionLoading :
         mViewTestTabContainer->selectTab(XUI_VIEW_TAB_INDEX);
-        mViewTab->setEnabled(FALSE);
-        mShowLabel->setEnabled(FALSE);
-        mShowWorldCheckBox->setEnabled(FALSE);
-        mShowWorldMovablesOnlyCheckBox->setEnabled(FALSE);
-        mShowNavMeshCheckBox->setEnabled(FALSE);
-        mShowNavMeshWalkabilityLabel->setEnabled(FALSE);
-        mShowNavMeshWalkabilityComboBox->setEnabled(FALSE);
-        mShowWalkablesCheckBox->setEnabled(FALSE);
-        mShowStaticObstaclesCheckBox->setEnabled(FALSE);
-        mShowMaterialVolumesCheckBox->setEnabled(FALSE);
-        mShowExclusionVolumesCheckBox->setEnabled(FALSE);
-        mShowRenderWaterPlaneCheckBox->setEnabled(FALSE);
-        mShowXRayCheckBox->setEnabled(FALSE);
-        mTestTab->setEnabled(FALSE);
-        mCtrlClickLabel->setEnabled(FALSE);
-        mShiftClickLabel->setEnabled(FALSE);
-        mCharacterWidthLabel->setEnabled(FALSE);
-        mCharacterWidthUnitLabel->setEnabled(FALSE);
-        mCharacterWidthSlider->setEnabled(FALSE);
-        mCharacterTypeLabel->setEnabled(FALSE);
-        mCharacterTypeComboBox->setEnabled(FALSE);
-        mClearPathButton->setEnabled(FALSE);
+        mViewTab->setEnabled(false);
+        mShowLabel->setEnabled(false);
+        mShowWorldCheckBox->setEnabled(false);
+        mShowWorldMovablesOnlyCheckBox->setEnabled(false);
+        mShowNavMeshCheckBox->setEnabled(false);
+        mShowNavMeshWalkabilityLabel->setEnabled(false);
+        mShowNavMeshWalkabilityComboBox->setEnabled(false);
+        mShowWalkablesCheckBox->setEnabled(false);
+        mShowStaticObstaclesCheckBox->setEnabled(false);
+        mShowMaterialVolumesCheckBox->setEnabled(false);
+        mShowExclusionVolumesCheckBox->setEnabled(false);
+        mShowRenderWaterPlaneCheckBox->setEnabled(false);
+        mShowXRayCheckBox->setEnabled(false);
+        mTestTab->setEnabled(false);
+        mCtrlClickLabel->setEnabled(false);
+        mShiftClickLabel->setEnabled(false);
+        mCharacterWidthLabel->setEnabled(false);
+        mCharacterWidthUnitLabel->setEnabled(false);
+        mCharacterWidthSlider->setEnabled(false);
+        mCharacterTypeLabel->setEnabled(false);
+        mCharacterTypeComboBox->setEnabled(false);
+        mClearPathButton->setEnabled(false);
         clearPath();
         break;
     case kConsoleStateLibraryNotImplemented :
         mViewTestTabContainer->selectTab(XUI_VIEW_TAB_INDEX);
-        mViewTab->setEnabled(FALSE);
-        mShowLabel->setEnabled(FALSE);
-        mShowWorldCheckBox->setEnabled(FALSE);
-        mShowWorldMovablesOnlyCheckBox->setEnabled(FALSE);
-        mShowNavMeshCheckBox->setEnabled(FALSE);
-        mShowNavMeshWalkabilityLabel->setEnabled(FALSE);
-        mShowNavMeshWalkabilityComboBox->setEnabled(FALSE);
-        mShowWalkablesCheckBox->setEnabled(FALSE);
-        mShowStaticObstaclesCheckBox->setEnabled(FALSE);
-        mShowMaterialVolumesCheckBox->setEnabled(FALSE);
-        mShowExclusionVolumesCheckBox->setEnabled(FALSE);
-        mShowRenderWaterPlaneCheckBox->setEnabled(FALSE);
-        mShowXRayCheckBox->setEnabled(FALSE);
-        mTestTab->setEnabled(FALSE);
-        mCtrlClickLabel->setEnabled(FALSE);
-        mShiftClickLabel->setEnabled(FALSE);
-        mCharacterWidthLabel->setEnabled(FALSE);
-        mCharacterWidthUnitLabel->setEnabled(FALSE);
-        mCharacterWidthSlider->setEnabled(FALSE);
-        mCharacterTypeLabel->setEnabled(FALSE);
-        mCharacterTypeComboBox->setEnabled(FALSE);
-        mClearPathButton->setEnabled(FALSE);
+        mViewTab->setEnabled(false);
+        mShowLabel->setEnabled(false);
+        mShowWorldCheckBox->setEnabled(false);
+        mShowWorldMovablesOnlyCheckBox->setEnabled(false);
+        mShowNavMeshCheckBox->setEnabled(false);
+        mShowNavMeshWalkabilityLabel->setEnabled(false);
+        mShowNavMeshWalkabilityComboBox->setEnabled(false);
+        mShowWalkablesCheckBox->setEnabled(false);
+        mShowStaticObstaclesCheckBox->setEnabled(false);
+        mShowMaterialVolumesCheckBox->setEnabled(false);
+        mShowExclusionVolumesCheckBox->setEnabled(false);
+        mShowRenderWaterPlaneCheckBox->setEnabled(false);
+        mShowXRayCheckBox->setEnabled(false);
+        mTestTab->setEnabled(false);
+        mCtrlClickLabel->setEnabled(false);
+        mShiftClickLabel->setEnabled(false);
+        mCharacterWidthLabel->setEnabled(false);
+        mCharacterWidthUnitLabel->setEnabled(false);
+        mCharacterWidthSlider->setEnabled(false);
+        mCharacterTypeLabel->setEnabled(false);
+        mCharacterTypeComboBox->setEnabled(false);
+        mClearPathButton->setEnabled(false);
         clearPath();
         break;
     case kConsoleStateCheckingVersion :
     case kConsoleStateDownloading :
     case kConsoleStateError :
         mViewTestTabContainer->selectTab(XUI_VIEW_TAB_INDEX);
-        mViewTab->setEnabled(FALSE);
-        mShowLabel->setEnabled(FALSE);
-        mShowWorldCheckBox->setEnabled(FALSE);
-        mShowWorldMovablesOnlyCheckBox->setEnabled(FALSE);
-        mShowNavMeshCheckBox->setEnabled(FALSE);
-        mShowNavMeshWalkabilityLabel->setEnabled(FALSE);
-        mShowNavMeshWalkabilityComboBox->setEnabled(FALSE);
-        mShowWalkablesCheckBox->setEnabled(FALSE);
-        mShowStaticObstaclesCheckBox->setEnabled(FALSE);
-        mShowMaterialVolumesCheckBox->setEnabled(FALSE);
-        mShowExclusionVolumesCheckBox->setEnabled(FALSE);
-        mShowRenderWaterPlaneCheckBox->setEnabled(FALSE);
-        mShowXRayCheckBox->setEnabled(FALSE);
-        mTestTab->setEnabled(FALSE);
-        mCtrlClickLabel->setEnabled(FALSE);
-        mShiftClickLabel->setEnabled(FALSE);
-        mCharacterWidthLabel->setEnabled(FALSE);
-        mCharacterWidthUnitLabel->setEnabled(FALSE);
-        mCharacterWidthSlider->setEnabled(FALSE);
-        mCharacterTypeLabel->setEnabled(FALSE);
-        mCharacterTypeComboBox->setEnabled(FALSE);
-        mClearPathButton->setEnabled(FALSE);
+        mViewTab->setEnabled(false);
+        mShowLabel->setEnabled(false);
+        mShowWorldCheckBox->setEnabled(false);
+        mShowWorldMovablesOnlyCheckBox->setEnabled(false);
+        mShowNavMeshCheckBox->setEnabled(false);
+        mShowNavMeshWalkabilityLabel->setEnabled(false);
+        mShowNavMeshWalkabilityComboBox->setEnabled(false);
+        mShowWalkablesCheckBox->setEnabled(false);
+        mShowStaticObstaclesCheckBox->setEnabled(false);
+        mShowMaterialVolumesCheckBox->setEnabled(false);
+        mShowExclusionVolumesCheckBox->setEnabled(false);
+        mShowRenderWaterPlaneCheckBox->setEnabled(false);
+        mShowXRayCheckBox->setEnabled(false);
+        mTestTab->setEnabled(false);
+        mCtrlClickLabel->setEnabled(false);
+        mShiftClickLabel->setEnabled(false);
+        mCharacterWidthLabel->setEnabled(false);
+        mCharacterWidthUnitLabel->setEnabled(false);
+        mCharacterWidthSlider->setEnabled(false);
+        mCharacterTypeLabel->setEnabled(false);
+        mCharacterTypeComboBox->setEnabled(false);
+        mClearPathButton->setEnabled(false);
         clearPath();
         break;
     case kConsoleStateHasNavMesh :
-        mViewTab->setEnabled(TRUE);
-        mShowLabel->setEnabled(TRUE);
-        mShowWorldCheckBox->setEnabled(TRUE);
+        mViewTab->setEnabled(true);
+        mShowLabel->setEnabled(true);
+        mShowWorldCheckBox->setEnabled(true);
         setWorldRenderState();
-        mShowNavMeshCheckBox->setEnabled(TRUE);
+        mShowNavMeshCheckBox->setEnabled(true);
         setNavMeshRenderState();
-        mShowWalkablesCheckBox->setEnabled(TRUE);
-        mShowStaticObstaclesCheckBox->setEnabled(TRUE);
-        mShowMaterialVolumesCheckBox->setEnabled(TRUE);
-        mShowExclusionVolumesCheckBox->setEnabled(TRUE);
-        mShowRenderWaterPlaneCheckBox->setEnabled(TRUE);
-        mShowXRayCheckBox->setEnabled(TRUE);
-        mTestTab->setEnabled(TRUE);
-        mCtrlClickLabel->setEnabled(TRUE);
-        mShiftClickLabel->setEnabled(TRUE);
-        mCharacterWidthLabel->setEnabled(TRUE);
-        mCharacterWidthUnitLabel->setEnabled(TRUE);
-        mCharacterWidthSlider->setEnabled(TRUE);
-        mCharacterTypeLabel->setEnabled(TRUE);
-        mCharacterTypeComboBox->setEnabled(TRUE);
-        mClearPathButton->setEnabled(TRUE);
+        mShowWalkablesCheckBox->setEnabled(true);
+        mShowStaticObstaclesCheckBox->setEnabled(true);
+        mShowMaterialVolumesCheckBox->setEnabled(true);
+        mShowExclusionVolumesCheckBox->setEnabled(true);
+        mShowRenderWaterPlaneCheckBox->setEnabled(true);
+        mShowXRayCheckBox->setEnabled(true);
+        mTestTab->setEnabled(true);
+        mCtrlClickLabel->setEnabled(true);
+        mShiftClickLabel->setEnabled(true);
+        mCharacterWidthLabel->setEnabled(true);
+        mCharacterWidthUnitLabel->setEnabled(true);
+        mCharacterWidthSlider->setEnabled(true);
+        mCharacterTypeLabel->setEnabled(true);
+        mCharacterTypeComboBox->setEnabled(true);
+        mClearPathButton->setEnabled(true);
         break;
     default :
         llassert(0);
@@ -1065,7 +1060,7 @@ void LLFloaterPathfindingConsole::updatePathTestStatus()
 }
 
 
-BOOL LLFloaterPathfindingConsole::isRenderAnyShapes() const
+bool LLFloaterPathfindingConsole::isRenderAnyShapes() const
 {
     return (isRenderWalkables() || isRenderStaticObstacles() ||
         isRenderMaterialVolumes() ||  isRenderExclusionVolumes());
diff --git a/indra/newview/llfloaterpathfindingconsole.h b/indra/newview/llfloaterpathfindingconsole.h
index 42aee1ec46..bcbc94e10e 100644
--- a/indra/newview/llfloaterpathfindingconsole.h
+++ b/indra/newview/llfloaterpathfindingconsole.h
@@ -55,40 +55,40 @@ class LLFloaterPathfindingConsole
     friend class LLFloaterReg;
 
 public:
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     virtual void onOpen(const LLSD& pKey);
     virtual void onClose(bool pIsAppQuitting);
 
     static LLHandle<LLFloaterPathfindingConsole> getInstanceHandle();
 
-    BOOL isRenderNavMesh() const;
-    void setRenderNavMesh(BOOL pIsRenderNavMesh);
+    bool isRenderNavMesh() const;
+    void setRenderNavMesh(bool pIsRenderNavMesh);
 
-    BOOL isRenderWalkables() const;
-    void setRenderWalkables(BOOL pIsRenderWalkables);
+    bool isRenderWalkables() const;
+    void setRenderWalkables(bool pIsRenderWalkables);
 
-    BOOL isRenderStaticObstacles() const;
-    void setRenderStaticObstacles(BOOL pIsRenderStaticObstacles);
+    bool isRenderStaticObstacles() const;
+    void setRenderStaticObstacles(bool pIsRenderStaticObstacles);
 
-    BOOL isRenderMaterialVolumes() const;
-    void setRenderMaterialVolumes(BOOL pIsRenderMaterialVolumes);
+    bool isRenderMaterialVolumes() const;
+    void setRenderMaterialVolumes(bool pIsRenderMaterialVolumes);
 
-    BOOL isRenderExclusionVolumes() const;
-    void setRenderExclusionVolumes(BOOL pIsRenderExclusionVolumes);
+    bool isRenderExclusionVolumes() const;
+    void setRenderExclusionVolumes(bool pIsRenderExclusionVolumes);
 
-    BOOL isRenderWorld() const;
-    void setRenderWorld(BOOL pIsRenderWorld);
+    bool isRenderWorld() const;
+    void setRenderWorld(bool pIsRenderWorld);
 
-    BOOL isRenderWorldMovablesOnly() const;
-    void setRenderWorldMovablesOnly(BOOL pIsRenderWorldMovablesOnly);
+    bool isRenderWorldMovablesOnly() const;
+    void setRenderWorldMovablesOnly(bool pIsRenderWorldMovablesOnly);
 
-    BOOL isRenderWaterPlane() const;
-    void setRenderWaterPlane(BOOL pIsRenderWaterPlane);
+    bool isRenderWaterPlane() const;
+    void setRenderWaterPlane(bool pIsRenderWaterPlane);
 
-    BOOL isRenderXRay() const;
-    void setRenderXRay(BOOL pIsRenderXRay);
+    bool isRenderXRay() const;
+    void setRenderXRay(bool pIsRenderXRay);
 
-    BOOL isRenderAnyShapes() const;
+    bool isRenderAnyShapes() const;
     U32  getRenderShapeFlags();
 
     LLPathingLib::LLPLCharacterType getRenderHeatmapType() const;
diff --git a/indra/newview/llfloaterpathfindinglinksets.cpp b/indra/newview/llfloaterpathfindinglinksets.cpp
index 66e756720c..7ed64383f0 100644
--- a/indra/newview/llfloaterpathfindinglinksets.cpp
+++ b/indra/newview/llfloaterpathfindinglinksets.cpp
@@ -111,7 +111,7 @@ LLFloaterPathfindingLinksets::~LLFloaterPathfindingLinksets()
 {
 }
 
-BOOL LLFloaterPathfindingLinksets::postBuild()
+bool LLFloaterPathfindingLinksets::postBuild()
 {
     mBeaconColor = LLUIColorTable::getInstance()->getColor("PathfindingLinksetBeaconColor");
 
@@ -577,12 +577,12 @@ void LLFloaterPathfindingLinksets::updateStateOnEditFields()
 
 void LLFloaterPathfindingLinksets::updateStateOnEditLinksetUse()
 {
-    BOOL useWalkable = FALSE;
-    BOOL useStaticObstacle = FALSE;
-    BOOL useDynamicObstacle = FALSE;
-    BOOL useMaterialVolume = FALSE;
-    BOOL useExclusionVolume = FALSE;
-    BOOL useDynamicPhantom = FALSE;
+    bool useWalkable = false;
+    bool useStaticObstacle = false;
+    bool useDynamicObstacle = false;
+    bool useMaterialVolume = false;
+    bool useExclusionVolume = false;
+    bool useDynamicPhantom = false;
 
     LLPathfindingObjectListPtr selectedObjects = getSelectedObjects();
     if ((selectedObjects != NULL) && !selectedObjects->isEmpty())
diff --git a/indra/newview/llfloaterpathfindinglinksets.h b/indra/newview/llfloaterpathfindinglinksets.h
index e14f5c5663..ecf705d2d4 100644
--- a/indra/newview/llfloaterpathfindinglinksets.h
+++ b/indra/newview/llfloaterpathfindinglinksets.h
@@ -55,7 +55,7 @@ protected:
     LLFloaterPathfindingLinksets(const LLSD& pSeed);
     virtual ~LLFloaterPathfindingLinksets();
 
-    virtual BOOL                       postBuild();
+    virtual bool                       postBuild();
 
     virtual void                       requestGetObjects();
 
diff --git a/indra/newview/llfloaterpathfindingobjects.cpp b/indra/newview/llfloaterpathfindingobjects.cpp
index b264df085a..402da273c8 100644
--- a/indra/newview/llfloaterpathfindingobjects.cpp
+++ b/indra/newview/llfloaterpathfindingobjects.cpp
@@ -75,7 +75,7 @@ void LLFloaterPathfindingObjects::onOpen(const LLSD &pKey)
     LLFloater::onOpen(pKey);
 
     selectNoneObjects();
-    mObjectsScrollList->setCommitOnSelectionChange(TRUE);
+    mObjectsScrollList->setCommitOnSelectionChange(true);
 
     if (!mSelectionUpdateSlot.connected())
     {
@@ -112,7 +112,7 @@ void LLFloaterPathfindingObjects::onClose(bool pIsAppQuitting)
         mSelectionUpdateSlot.disconnect();
     }
 
-    mObjectsScrollList->setCommitOnSelectionChange(FALSE);
+    mObjectsScrollList->setCommitOnSelectionChange(false);
     selectNoneObjects();
 
     if (mObjectsSelection.notNull())
@@ -135,7 +135,7 @@ void LLFloaterPathfindingObjects::draw()
         std::vector<LLScrollListItem *> selectedItems = mObjectsScrollList->getAllSelected();
         if (!selectedItems.empty())
         {
-            int numSelectedItems = selectedItems.size();
+            auto numSelectedItems = selectedItems.size();
             S32 nameColumnIndex = getNameColumnIndex();
             const LLColor4 &beaconColor = getBeaconColor();
             const LLColor4 &beaconTextColor = getBeaconTextColor();
@@ -194,7 +194,7 @@ LLFloaterPathfindingObjects::~LLFloaterPathfindingObjects()
     clearAllObjects();
 }
 
-BOOL LLFloaterPathfindingObjects::postBuild()
+bool LLFloaterPathfindingObjects::postBuild()
 {
     mDefaultBeaconColor = LLUIColorTable::getInstance()->getColor("PathfindingDefaultBeaconColor");
     mDefaultBeaconTextColor = LLUIColorTable::getInstance()->getColor("PathfindingDefaultBeaconTextColor");
@@ -204,7 +204,7 @@ BOOL LLFloaterPathfindingObjects::postBuild()
     mObjectsScrollList = findChild<LLScrollListCtrl>("objects_scroll_list");
     llassert(mObjectsScrollList != NULL);
     mObjectsScrollList->setCommitCallback(boost::bind(&LLFloaterPathfindingObjects::onScrollListSelectionChanged, this));
-    mObjectsScrollList->sortByColumnIndex(static_cast<U32>(getNameColumnIndex()), TRUE);
+    mObjectsScrollList->sortByColumnIndex(static_cast<U32>(getNameColumnIndex()), true);
 
     mMessagingStatus = findChild<LLTextBase>("messaging_status");
     llassert(mMessagingStatus != NULL);
@@ -334,7 +334,7 @@ void LLFloaterPathfindingObjects::rebuildObjectsScrollList(bool update_if_needed
     if (!mHasObjectsToBeSelected)
     {
         std::vector<LLScrollListItem*> selectedItems = mObjectsScrollList->getAllSelected();
-        int numSelectedItems = selectedItems.size();
+        auto numSelectedItems = selectedItems.size();
         if (numSelectedItems > 0)
         {
             mObjectsToBeSelected.reserve(selectedItems.size());
@@ -494,14 +494,14 @@ void LLFloaterPathfindingObjects::showFloaterWithSelectionObjects()
         rebuildObjectsScrollList(true);
         if (isMinimized())
         {
-            setMinimized(FALSE);
+            setMinimized(false);
         }
         setVisibleAndFrontmost();
     }
-    setFocus(TRUE);
+    setFocus(true);
 }
 
-BOOL LLFloaterPathfindingObjects::isShowBeacons() const
+bool LLFloaterPathfindingObjects::isShowBeacons() const
 {
     return mShowBeaconCheckBox->get();
 }
@@ -788,22 +788,22 @@ void LLFloaterPathfindingObjects::updateStateOnListControls()
     case kMessagingUnknown:
     case kMessagingGetRequestSent :
     case kMessagingSetRequestSent :
-        mRefreshListButton->setEnabled(FALSE);
-        mSelectAllButton->setEnabled(FALSE);
-        mSelectNoneButton->setEnabled(FALSE);
+        mRefreshListButton->setEnabled(false);
+        mSelectAllButton->setEnabled(false);
+        mSelectNoneButton->setEnabled(false);
         break;
     case kMessagingGetError :
     case kMessagingSetError :
     case kMessagingNotEnabled :
-        mRefreshListButton->setEnabled(TRUE);
-        mSelectAllButton->setEnabled(FALSE);
-        mSelectNoneButton->setEnabled(FALSE);
+        mRefreshListButton->setEnabled(true);
+        mSelectAllButton->setEnabled(false);
+        mSelectNoneButton->setEnabled(false);
         break;
     case kMessagingComplete :
         {
             int numItems = mObjectsScrollList->getItemCount();
             int numSelectedItems = mObjectsScrollList->getNumSelected();
-            mRefreshListButton->setEnabled(TRUE);
+            mRefreshListButton->setEnabled(true);
             mSelectAllButton->setEnabled(numSelectedItems < numItems);
             mSelectNoneButton->setEnabled(numSelectedItems > 0);
         }
@@ -835,7 +835,7 @@ void LLFloaterPathfindingObjects::selectScrollListItemsInWorld()
     std::vector<LLScrollListItem *> selectedItems = mObjectsScrollList->getAllSelected();
     if (!selectedItems.empty())
     {
-        int numSelectedItems = selectedItems.size();
+        auto numSelectedItems = selectedItems.size();
 
         std::vector<LLViewerObject *>viewerObjects;
         viewerObjects.reserve(numSelectedItems);
diff --git a/indra/newview/llfloaterpathfindingobjects.h b/indra/newview/llfloaterpathfindingobjects.h
index 3174a47f65..44fb0fa92d 100644
--- a/indra/newview/llfloaterpathfindingobjects.h
+++ b/indra/newview/llfloaterpathfindingobjects.h
@@ -73,7 +73,7 @@ protected:
     LLFloaterPathfindingObjects(const LLSD &pSeed);
     virtual ~LLFloaterPathfindingObjects();
 
-    virtual BOOL                       postBuild();
+    virtual bool                       postBuild();
 
     virtual void                       requestGetObjects();
     LLPathfindingManager::request_id_t getNewRequestId();
@@ -96,7 +96,7 @@ protected:
 
     void                               showFloaterWithSelectionObjects();
 
-    BOOL                               isShowBeacons() const;
+    bool                               isShowBeacons() const;
     void                               clearAllObjects();
     void                               selectAllObjects();
     void                               selectNoneObjects();
diff --git a/indra/newview/llfloaterpay.cpp b/indra/newview/llfloaterpay.cpp
index d607f2361a..e4e7c4ee39 100644
--- a/indra/newview/llfloaterpay.cpp
+++ b/indra/newview/llfloaterpay.cpp
@@ -83,7 +83,7 @@ class LLFloaterPay : public LLFloater
 public:
     LLFloaterPay(const LLSD& key);
     virtual ~LLFloaterPay();
-    /*virtual*/ BOOL    postBuild();
+    /*virtual*/ bool    postBuild();
     /*virtual*/ void onClose(bool app_quitting);
 
     void setCallback(money_callback callback) { mCallback = callback; }
@@ -104,15 +104,15 @@ private:
     static void onGive(give_money_ptr info);
     void give(S32 amount);
     static void processPayPriceReply(LLMessageSystem* msg, void **userdata);
-    void finishPayUI(const LLUUID& target_id, BOOL is_group);
+    void finishPayUI(const LLUUID& target_id, bool is_group);
 
 protected:
     std::vector<give_money_ptr> mCallbackData;
     money_callback mCallback;
     LLTextBox* mObjectNameText;
     LLUUID mTargetUUID;
-    BOOL mTargetIsGroup;
-    BOOL mHaveName;
+    bool mTargetIsGroup;
+    bool mHaveName;
 
     LLButton* mQuickPayButton[MAX_PAY_BUTTONS];
     give_money_ptr mQuickPayInfo[MAX_PAY_BUTTONS];
@@ -130,8 +130,8 @@ LLFloaterPay::LLFloaterPay(const LLSD& key)
       mCallback(NULL),
       mObjectNameText(NULL),
       mTargetUUID(key.asUUID()),
-      mTargetIsGroup(FALSE),
-      mHaveName(FALSE)
+      mTargetIsGroup(false),
+      mHaveName(false)
 {
 }
 
@@ -150,7 +150,7 @@ LLFloaterPay::~LLFloaterPay()
     gMessageSystem->setHandlerFuncFast(_PREHASH_PayPriceReply, 0, 0);
 }
 
-BOOL LLFloaterPay::postBuild()
+bool LLFloaterPay::postBuild()
 {
     S32 i = 0;
 
@@ -158,7 +158,7 @@ BOOL LLFloaterPay::postBuild()
     mCallbackData.push_back(info);
 
     childSetAction("fastpay 1", boost::bind(LLFloaterPay::onGive, info));
-    getChildView("fastpay 1")->setVisible(FALSE);
+    getChildView("fastpay 1")->setVisible(false);
 
     mQuickPayButton[i] = getChild<LLButton>("fastpay 1");
     mQuickPayInfo[i] = info;
@@ -168,7 +168,7 @@ BOOL LLFloaterPay::postBuild()
     mCallbackData.push_back(info);
 
     childSetAction("fastpay 5", boost::bind(LLFloaterPay::onGive, info));
-    getChildView("fastpay 5")->setVisible(FALSE);
+    getChildView("fastpay 5")->setVisible(false);
 
     mQuickPayButton[i] = getChild<LLButton>("fastpay 5");
     mQuickPayInfo[i] = info;
@@ -178,7 +178,7 @@ BOOL LLFloaterPay::postBuild()
     mCallbackData.push_back(info);
 
     childSetAction("fastpay 10", boost::bind(LLFloaterPay::onGive, info));
-    getChildView("fastpay 10")->setVisible(FALSE);
+    getChildView("fastpay 10")->setVisible(false);
 
     mQuickPayButton[i] = getChild<LLButton>("fastpay 10");
     mQuickPayInfo[i] = info;
@@ -188,15 +188,15 @@ BOOL LLFloaterPay::postBuild()
     mCallbackData.push_back(info);
 
     childSetAction("fastpay 20", boost::bind(LLFloaterPay::onGive, info));
-    getChildView("fastpay 20")->setVisible(FALSE);
+    getChildView("fastpay 20")->setVisible(false);
 
     mQuickPayButton[i] = getChild<LLButton>("fastpay 20");
     mQuickPayInfo[i] = info;
     ++i;
 
 
-    getChildView("amount text")->setVisible(FALSE);
-    getChildView("amount")->setVisible(FALSE);
+    getChildView("amount text")->setVisible(false);
+    getChildView("amount")->setVisible(false);
 
     getChild<LLLineEditor>("amount")->setKeystrokeCallback(&LLFloaterPay::onKeystroke, this);
     getChild<LLLineEditor>("amount")->setPrevalidate(LLTextValidate::validateNonNegativeS32);
@@ -206,12 +206,12 @@ BOOL LLFloaterPay::postBuild()
 
     childSetAction("pay btn", boost::bind(LLFloaterPay::onGive, info));
     setDefaultBtn("pay btn");
-    getChildView("pay btn")->setVisible(FALSE);
-    getChildView("pay btn")->setEnabled(FALSE);
+    getChildView("pay btn")->setVisible(false);
+    getChildView("pay btn")->setEnabled(false);
 
     childSetAction("cancel btn",&LLFloaterPay::onCancel,this);
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -241,25 +241,25 @@ void LLFloaterPay::processPayPriceReply(LLMessageSystem* msg, void **userdata)
 
         if (PAY_PRICE_HIDE == price)
         {
-            self->getChildView("amount")->setVisible(FALSE);
-            self->getChildView("pay btn")->setVisible(FALSE);
-            self->getChildView("amount text")->setVisible(FALSE);
+            self->getChildView("amount")->setVisible(false);
+            self->getChildView("pay btn")->setVisible(false);
+            self->getChildView("amount text")->setVisible(false);
         }
         else if (PAY_PRICE_DEFAULT == price)
         {
-            self->getChildView("amount")->setVisible(TRUE);
-            self->getChildView("pay btn")->setVisible(TRUE);
-            self->getChildView("amount text")->setVisible(TRUE);
+            self->getChildView("amount")->setVisible(true);
+            self->getChildView("pay btn")->setVisible(true);
+            self->getChildView("amount text")->setVisible(true);
         }
         else
         {
             // PAY_PRICE_HIDE and PAY_PRICE_DEFAULT are negative values
             // So we take the absolute value here after we have checked for those cases
 
-            self->getChildView("amount")->setVisible(TRUE);
-            self->getChildView("pay btn")->setVisible(TRUE);
-            self->getChildView("pay btn")->setEnabled(TRUE);
-            self->getChildView("amount text")->setVisible(TRUE);
+            self->getChildView("amount")->setVisible(true);
+            self->getChildView("pay btn")->setVisible(true);
+            self->getChildView("pay btn")->setEnabled(true);
+            self->getChildView("amount text")->setVisible(true);
 
             self->getChild<LLUICtrl>("amount")->setValue(llformat("%d", llabs(price)));
         }
@@ -282,7 +282,7 @@ void LLFloaterPay::processPayPriceReply(LLMessageSystem* msg, void **userdata)
 
                 self->mQuickPayButton[i]->setLabelSelected(button_str);
                 self->mQuickPayButton[i]->setLabelUnselected(button_str);
-                self->mQuickPayButton[i]->setVisible(TRUE);
+                self->mQuickPayButton[i]->setVisible(true);
                 self->mQuickPayInfo[i]->mAmount = pay_button;
 
                 if ( pay_button > max_pay_amount )
@@ -292,7 +292,7 @@ void LLFloaterPay::processPayPriceReply(LLMessageSystem* msg, void **userdata)
             }
             else
             {
-                self->mQuickPayButton[i]->setVisible(FALSE);
+                self->mQuickPayButton[i]->setVisible(false);
             }
         }
 
@@ -345,10 +345,10 @@ void LLFloaterPay::processPayPriceReply(LLMessageSystem* msg, void **userdata)
 
         for (i=num_blocks;i<MAX_PAY_BUTTONS;++i)
         {
-            self->mQuickPayButton[i]->setVisible(FALSE);
+            self->mQuickPayButton[i]->setVisible(false);
         }
 
-        self->reshape( self->getRect().getWidth() + padding_required, self->getRect().getHeight(), FALSE );
+        self->reshape( self->getRect().getWidth() + padding_required, self->getRect().getHeight(), false );
     }
     msg->setHandlerFunc("PayPriceReply",NULL,NULL);
 }
@@ -388,7 +388,7 @@ void LLFloaterPay::payViaObject(money_callback callback, LLSafeHandle<LLObjectSe
     msg->setHandlerFuncFast(_PREHASH_PayPriceReply, processPayPriceReply,(void **)floater);
 
     LLUUID owner_id;
-    BOOL is_group = FALSE;
+    bool is_group = false;
     node->mPermissions->getOwnership(owner_id, is_group);
 
     floater->getChild<LLUICtrl>("object_name_text")->setValue(node->mName);
@@ -407,13 +407,13 @@ void LLFloaterPay::payDirectly(money_callback callback,
     floater->setCallback(callback);
     floater->mObjectSelection = NULL;
 
-    floater->getChildView("amount")->setVisible(TRUE);
-    floater->getChildView("pay btn")->setVisible(TRUE);
-    floater->getChildView("amount text")->setVisible(TRUE);
+    floater->getChildView("amount")->setVisible(true);
+    floater->getChildView("pay btn")->setVisible(true);
+    floater->getChildView("amount text")->setVisible(true);
 
     for(S32 i=0;i<MAX_PAY_BUTTONS;++i)
     {
-        floater->mQuickPayButton[i]->setVisible(TRUE);
+        floater->mQuickPayButton[i]->setVisible(true);
     }
 
     floater->finishPayUI(target_id, is_group);
@@ -436,7 +436,7 @@ bool LLFloaterPay::payConfirmationCallback(const LLSD& notification, const LLSD&
     return false;
 }
 
-void LLFloaterPay::finishPayUI(const LLUUID& target_id, BOOL is_group)
+void LLFloaterPay::finishPayUI(const LLUUID& target_id, bool is_group)
 {
     std::string slurl;
     if (is_group)
@@ -454,7 +454,7 @@ void LLFloaterPay::finishPayUI(const LLUUID& target_id, BOOL is_group)
     // Make sure the amount field has focus
 
     LLLineEditor* amount = getChild<LLLineEditor>("amount");
-    amount->setFocus(TRUE);
+    amount->setFocus(true);
     amount->selectAll();
 
     mTargetIsGroup = is_group;
@@ -505,7 +505,7 @@ void LLFloaterPay::onGive(give_money_ptr info)
     if (amount > PAY_AMOUNT_NOTIFICATION && gStatusBar && gStatusBar->getBalance() > amount)
     {
         LLUUID payee_id = LLUUID::null;
-        BOOL is_group = false;
+        bool is_group = false;
         if (floater->mObjectSelection.notNull())
         {
             LLSelectNode* node = floater->mObjectSelection->getFirstRootNode();
@@ -569,7 +569,7 @@ void LLFloaterPay::give(S32 amount)
                     }
                     S32 tx_type = TRANS_PAY_OBJECT;
                     if(dest_object->isAvatar()) tx_type = TRANS_GIFT;
-                    mCallback(mTargetUUID, region, amount, FALSE, tx_type, object_name);
+                    mCallback(mTargetUUID, region, amount, false, tx_type, object_name);
                     mObjectSelection = NULL;
 
                     // request the object owner in order to check if the owner needs to be unmuted
diff --git a/indra/newview/llfloaterpay.h b/indra/newview/llfloaterpay.h
index fe48d00867..190bf9f013 100644
--- a/indra/newview/llfloaterpay.h
+++ b/indra/newview/llfloaterpay.h
@@ -32,7 +32,7 @@ class LLObjectSelection;
 class LLUUID;
 class LLViewerRegion;
 
-typedef void (*money_callback)(const LLUUID&, LLViewerRegion*,S32,BOOL,S32,const std::string&);
+typedef void (*money_callback)(const LLUUID&, LLViewerRegion*,S32,bool,S32,const std::string&);
 
 namespace LLFloaterPayUtil
 {
diff --git a/indra/newview/llfloaterperformance.cpp b/indra/newview/llfloaterperformance.cpp
index ba655ab760..01579ac165 100644
--- a/indra/newview/llfloaterperformance.cpp
+++ b/indra/newview/llfloaterperformance.cpp
@@ -91,7 +91,7 @@ LLFloaterPerformance::~LLFloaterPerformance()
     delete mUpdateTimer;
 }
 
-BOOL LLFloaterPerformance::postBuild()
+bool LLFloaterPerformance::postBuild()
 {
     mMainPanel = getChild<LLPanel>("panel_performance_main");
     mNearbyPanel = getChild<LLPanel>("panel_performance_nearby");
@@ -152,16 +152,16 @@ BOOL LLFloaterPerformance::postBuild()
     mStartAutotuneBtn->setCommitCallback(boost::bind(&LLFloaterPerformance::startAutotune, this));
     mStopAutotuneBtn->setCommitCallback(boost::bind(&LLFloaterPerformance::stopAutotune, this));
 
-    gSavedPerAccountSettings.declareBOOL("HadEnabledAutoFPS", FALSE, "User had enabled AutoFPS at least once", LLControlVariable::PERSIST_ALWAYS);
+    gSavedPerAccountSettings.declareBOOL("HadEnabledAutoFPS", false, "User had enabled AutoFPS at least once", LLControlVariable::PERSIST_ALWAYS);
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterPerformance::showSelectedPanel(LLPanel* selected_panel)
 {
     hidePanels();
-    mMainPanel->setVisible(FALSE);
-    selected_panel->setVisible(TRUE);
+    mMainPanel->setVisible(false);
+    selected_panel->setVisible(true);
 
     if (mHUDsPanel == selected_panel)
     {
@@ -214,16 +214,16 @@ void LLFloaterPerformance::draw()
 void LLFloaterPerformance::showMainPanel()
 {
     hidePanels();
-    mMainPanel->setVisible(TRUE);
+    mMainPanel->setVisible(true);
 }
 
 void LLFloaterPerformance::hidePanels()
 {
-    mNearbyPanel->setVisible(FALSE);
-    mComplexityPanel->setVisible(FALSE);
-    mHUDsPanel->setVisible(FALSE);
-    mSettingsPanel->setVisible(FALSE);
-    mAutoadjustmentsPanel->setVisible(FALSE);
+    mNearbyPanel->setVisible(false);
+    mComplexityPanel->setVisible(false);
+    mHUDsPanel->setVisible(false);
+    mSettingsPanel->setVisible(false);
+    mAutoadjustmentsPanel->setVisible(false);
 }
 
 void LLFloaterPerformance::initBackBtn(LLPanel* panel)
@@ -321,7 +321,7 @@ void LLFloaterPerformance::populateHUDList()
             }
         }
     }
-    mHUDList->sortByColumnIndex(1, FALSE);
+    mHUDList->sortByColumnIndex(1, false);
     mHUDList->setScrollPos(prev_pos);
     mHUDList->selectItemBySpecialId(prev_selected_id);
 }
@@ -413,7 +413,7 @@ void LLFloaterPerformance::populateObjectList()
             }
         }
     }
-    mObjectList->sortByColumnIndex(1, FALSE);
+    mObjectList->sortByColumnIndex(1, false);
     mObjectList->setScrollPos(prev_pos);
     mObjectList->selectItemBySpecialId(prev_selected_id);
 }
@@ -503,7 +503,7 @@ void LLFloaterPerformance::populateNearbyList()
         }
         char_iter++;
     }
-    mNearbyList->sortByColumnIndex(1, FALSE);
+    mNearbyList->sortByColumnIndex(1, false);
     mNearbyList->setScrollPos(prev_pos);
     mNearbyList->selectByID(prev_selected_id);
 }
@@ -736,7 +736,7 @@ void LLFloaterPerformance::enableAutotuneWarning()
 {
     if (!gSavedPerAccountSettings.getBOOL("HadEnabledAutoFPS") && LLPerfStats::tunables.userAutoTuneEnabled)
     {
-        gSavedPerAccountSettings.setBOOL("HadEnabledAutoFPS", TRUE);
+        gSavedPerAccountSettings.setBOOL("HadEnabledAutoFPS", true);
 
         LLNotificationsUtil::add("EnableAutoFPSWarning", LLSD(), LLSD(),
             [](const LLSD& notif, const LLSD& resp)
diff --git a/indra/newview/llfloaterperformance.h b/indra/newview/llfloaterperformance.h
index 03fa9e8184..797b800b62 100644
--- a/indra/newview/llfloaterperformance.h
+++ b/indra/newview/llfloaterperformance.h
@@ -38,7 +38,7 @@ public:
     LLFloaterPerformance(const LLSD& key);
     virtual ~LLFloaterPerformance();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void draw();
 
     void showSelectedPanel(LLPanel* selected_panel);
diff --git a/indra/newview/llfloaterperms.cpp b/indra/newview/llfloaterperms.cpp
index 15ca87c326..7311f0deb6 100644
--- a/indra/newview/llfloaterperms.cpp
+++ b/indra/newview/llfloaterperms.cpp
@@ -46,9 +46,9 @@ LLFloaterPerms::LLFloaterPerms(const LLSD& seed)
 {
 }
 
-BOOL LLFloaterPerms::postBuild()
+bool LLFloaterPerms::postBuild()
 {
-    return TRUE;
+    return true;
 }
 
 //static
@@ -126,7 +126,7 @@ const std::string LLFloaterPermsDefault::sCategoryNames[CAT_LAST] =
     "Materials"
 };
 
-BOOL LLFloaterPermsDefault::postBuild()
+bool LLFloaterPermsDefault::postBuild()
 {
     if(!gSavedSettings.getBOOL("DefaultUploadPermissionsConverted"))
     {
@@ -162,17 +162,17 @@ void LLFloaterPermsDefault::onCommitCopy(const LLSD& user_data)
     // Implements fair use
     std::string prefix = user_data.asString();
 
-    BOOL copyable = gSavedSettings.getBOOL(prefix+"NextOwnerCopy");
+    bool copyable = gSavedSettings.getBOOL(prefix+"NextOwnerCopy");
     if(!copyable)
     {
-        gSavedSettings.setBOOL(prefix+"NextOwnerTransfer", TRUE);
+        gSavedSettings.setBOOL(prefix+"NextOwnerTransfer", true);
     }
     LLCheckBoxCtrl* xfer = getChild<LLCheckBoxCtrl>(prefix+"_transfer");
     xfer->setEnabled(copyable);
 }
 
-const int MAX_HTTP_RETRIES = 5;
-const float RETRY_TIMEOUT = 5.0;
+constexpr int MAX_HTTP_RETRIES = 5;
+constexpr float RETRY_TIMEOUT = 5.0;
 
 void LLFloaterPermsDefault::sendInitialPerms()
 {
diff --git a/indra/newview/llfloaterperms.h b/indra/newview/llfloaterperms.h
index 639d678781..ad3776a8c6 100644
--- a/indra/newview/llfloaterperms.h
+++ b/indra/newview/llfloaterperms.h
@@ -37,7 +37,7 @@ class LLFloaterPerms : public LLFloater
     friend class LLFloaterReg;
 
 public:
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
 
     // Convenience methods to get current permission preference bitfields from saved settings:
     static U32 getEveryonePerms(std::string prefix=""); // prefix + "EveryoneCopy"
@@ -55,7 +55,7 @@ class LLFloaterPermsDefault : public LLFloater
     friend class LLFloaterReg;
 
 public:
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
     void ok();
     void cancel();
     void onClickOK();
@@ -81,7 +81,7 @@ enum Categories
 
 private:
     LLFloaterPermsDefault(const LLSD& seed);
-    void refresh();
+    void refresh() override;
 
     static const std::string sCategoryNames[CAT_LAST];
     static void updateCapCoro(std::string url);
diff --git a/indra/newview/llfloaterpostprocess.cpp b/indra/newview/llfloaterpostprocess.cpp
index af4f6b53bb..616c13cdc7 100644
--- a/indra/newview/llfloaterpostprocess.cpp
+++ b/indra/newview/llfloaterpostprocess.cpp
@@ -49,7 +49,7 @@ LLFloaterPostProcess::~LLFloaterPostProcess()
 
 
 }
-BOOL LLFloaterPostProcess::postBuild()
+bool LLFloaterPostProcess::postBuild()
 {
     /// Color Filter Callbacks
     childSetCommitCallback("ColorFilterToggle", &LLFloaterPostProcess::onBoolToggle, (char*)"enable_color_filter");
@@ -84,7 +84,7 @@ BOOL LLFloaterPostProcess::postBuild()
     getChild<LLComboBox>("PPSaveEffect")->setCommitCallback(boost::bind(&LLFloaterPostProcess::onSaveEffect, this, editBox));
 
     syncMenu();
-    return TRUE;
+    return true;
 }
 
 // Bool Toggle
diff --git a/indra/newview/llfloaterpostprocess.h b/indra/newview/llfloaterpostprocess.h
index 9e38e34170..50b48d8410 100644
--- a/indra/newview/llfloaterpostprocess.h
+++ b/indra/newview/llfloaterpostprocess.h
@@ -49,7 +49,7 @@ public:
 
     LLFloaterPostProcess(const LLSD& key);
     virtual ~LLFloaterPostProcess();
-    /*virtual*/ BOOL    postBuild();
+    bool postBuild();
 
     /// post process callbacks
     static void onBoolToggle(LLUICtrl* ctrl, void* userData);
@@ -67,11 +67,6 @@ public:
 
     /// sync up sliders
     void syncMenu();
-
-/*
-    void refresh();
-*/
-public:
 };
 
 #endif
diff --git a/indra/newview/llfloaterpreference.cpp b/indra/newview/llfloaterpreference.cpp
index 23ddd087eb..1b62f94a13 100644
--- a/indra/newview/llfloaterpreference.cpp
+++ b/indra/newview/llfloaterpreference.cpp
@@ -181,7 +181,7 @@ bool callback_clear_cache(const LLSD& notification, const LLSD& response)
     if ( option == 0 ) // YES
     {
         // flag client texture cache for clearing next time the client runs
-        gSavedSettings.setBOOL("PurgeCacheOnNextStartup", TRUE);
+        gSavedSettings.setBOOL("PurgeCacheOnNextStartup", true);
         LLNotificationsUtil::add("CacheWillClear");
     }
 
@@ -201,7 +201,7 @@ bool callback_clear_browser_cache(const LLSD& notification, const LLSD& response
         LLNavigationBar::getInstance()->clearHistoryCache();
 
         // flag client texture cache for clearing next time the client runs
-        gSavedSettings.setBOOL("PurgeCacheOnNextStartup", TRUE);
+        gSavedSettings.setBOOL("PurgeCacheOnNextStartup", true);
         LLNotificationsUtil::add("CacheWillClear");
 
         LLSearchHistory::getInstance()->clearHistory();
@@ -430,7 +430,7 @@ void LLFloaterPreference::saveAvatarPropertiesCoro(const std::string cap_url, bo
     LL_DEBUGS("Preferences") << "Agent id: " << gAgentID << " Data: " << data << " Result: " << httpResults << LL_ENDL;
 }
 
-BOOL LLFloaterPreference::postBuild()
+bool LLFloaterPreference::postBuild()
 {
     gSavedSettings.getControl("ChatFontSize")->getSignal()->connect(boost::bind(&LLFloaterIMSessionTab::processChatHistoryStyleUpdate, false));
 
@@ -440,6 +440,12 @@ BOOL LLFloaterPreference::postBuild()
 
     gSavedSettings.getControl("PreferredMaturity")->getSignal()->connect(boost::bind(&LLFloaterPreference::onChangeMaturity, this));
 
+    gSavedSettings.getControl("RenderAvatarComplexityMode")->getSignal()->connect(
+        [this](LLControlVariable* control, const LLSD& new_val, const LLSD& old_val)
+        {
+            onChangeComplexityMode(new_val);
+        });
+
     gSavedPerAccountSettings.getControl("ModelUploadFolder")->getSignal()->connect(boost::bind(&LLFloaterPreference::onChangeModelFolder, this));
     gSavedPerAccountSettings.getControl("PBRUploadFolder")->getSignal()->connect(boost::bind(&LLFloaterPreference::onChangePBRFolder, this));
     gSavedPerAccountSettings.getControl("TextureUploadFolder")->getSignal()->connect(boost::bind(&LLFloaterPreference::onChangeTextureFolder, this));
@@ -450,11 +456,11 @@ BOOL LLFloaterPreference::postBuild()
     if (!tabcontainer->selectTab(gSavedSettings.getS32("LastPrefTab")))
         tabcontainer->selectFirstTab();
 
-    getChild<LLUICtrl>("cache_location")->setEnabled(FALSE); // make it read-only but selectable (STORM-227)
+    getChild<LLUICtrl>("cache_location")->setEnabled(false); // make it read-only but selectable (STORM-227)
     std::string cache_location = gDirUtilp->getExpandedFilename(LL_PATH_CACHE, "");
     setCacheLocation(cache_location);
 
-    getChild<LLUICtrl>("log_path_string")->setEnabled(FALSE); // make it read-only but selectable
+    getChild<LLUICtrl>("log_path_string")->setEnabled(false); // make it read-only but selectable
 
     getChild<LLComboBox>("language_combobox")->setCommitCallback(boost::bind(&LLFloaterPreference::onLanguageChange, this));
 
@@ -480,6 +486,9 @@ BOOL LLFloaterPreference::postBuild()
     fov_slider->setMinValue(LLViewerCamera::getInstance()->getMinView());
     fov_slider->setMaxValue(LLViewerCamera::getInstance()->getMaxView());
 
+    bool enable_complexity = gSavedSettings.getS32("RenderAvatarComplexityMode") != LLVOAvatar::AV_RENDER_ONLY_SHOW_FRIENDS;
+    getChild<LLSliderCtrl>("IndirectMaxComplexity")->setEnabled(enable_complexity);
+
     // Hook up and init for filtering
     mFilterEdit = getChild<LLSearchEditor>("search_prefs_edit");
     mFilterEdit->setKeystrokeCallback(boost::bind(&LLFloaterPreference::onUpdateFilterTerm, this, false));
@@ -507,7 +516,7 @@ BOOL LLFloaterPreference::postBuild()
         getChild<LLComboBox>("language_combobox")->add("System default", LLSD("default"), ADD_TOP, true);
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterPreference::updateDeleteTranscriptsButton()
@@ -517,7 +526,7 @@ void LLFloaterPreference::updateDeleteTranscriptsButton()
 
 void LLFloaterPreference::onDoNotDisturbResponseChanged()
 {
-    // set "DoNotDisturbResponseChanged" TRUE if user edited message differs from default, FALSE otherwise
+    // set "DoNotDisturbResponseChanged" true if user edited message differs from default, false otherwise
     bool response_changed_flag =
             LLTrans::getString("DoNotDisturbModeResponseDefault")
                     != getChild<LLUICtrl>("do_not_disturb_response")->getValue().asString();
@@ -534,7 +543,7 @@ LLFloaterPreference::~LLFloaterPreference()
 
 void LLFloaterPreference::draw()
 {
-    BOOL has_first_selected = (getChildRef<LLScrollListCtrl>("disabled_popups").getFirstSelected()!=NULL);
+    bool has_first_selected = (getChildRef<LLScrollListCtrl>("disabled_popups").getFirstSelected()!=NULL);
     gSavedSettings.setBOOL("FirstSelectedDisabledPopups", has_first_selected);
 
     has_first_selected = (getChildRef<LLScrollListCtrl>("enabled_popups").getFirstSelected()!=NULL);
@@ -589,7 +598,7 @@ void LLFloaterPreference::apply()
 
     LLViewerMedia::getInstance()->setCookiesEnabled(getChild<LLUICtrl>("cookies_enabled")->getValue());
 
-    if (hasChild("web_proxy_enabled", TRUE) &&hasChild("web_proxy_editor", TRUE) && hasChild("web_proxy_port", TRUE))
+    if (hasChild("web_proxy_enabled", true) &&hasChild("web_proxy_editor", true) && hasChild("web_proxy_port", true))
     {
         bool proxy_enable = getChild<LLUICtrl>("web_proxy_enabled")->getValue();
         std::string proxy_address = getChild<LLUICtrl>("web_proxy_editor")->getValue();
@@ -622,7 +631,7 @@ void LLFloaterPreference::apply()
     saveAvatarProperties();
 }
 
-void LLFloaterPreference::cancel()
+void LLFloaterPreference::cancel(const std::vector<std::string> settings_to_skip)
 {
     LLTabContainer* tabcontainer = getChild<LLTabContainer>("pref core");
     // Call cancel() on all panels that derive from LLPanelPreference
@@ -632,7 +641,7 @@ void LLFloaterPreference::cancel()
         LLView* view = *iter;
         LLPanelPreference* panel = dynamic_cast<LLPanelPreference*>(view);
         if (panel)
-            panel->cancel();
+            panel->cancel(settings_to_skip);
     }
     // hide joystick pref floater
     LLFloaterReg::hideInstance("pref_joystick");
@@ -679,7 +688,7 @@ void LLFloaterPreference::cancel()
 void LLFloaterPreference::onOpen(const LLSD& key)
 {
     // this variable and if that follows it are used to properly handle do not disturb mode response message
-    static bool initialized = FALSE;
+    static bool initialized = false;
     // if user is logged in and we haven't initialized do not disturb mode response yet, do it
     if (!initialized && LLStartUp::getStartupState() == STATE_STARTED)
     {
@@ -688,8 +697,8 @@ void LLFloaterPreference::onOpen(const LLSD& key)
         // To keep track of whether do not disturb response is default or changed by user additional setting DoNotDisturbResponseChanged
         // was added into per account settings.
 
-        // initialization should happen once,so setting variable to TRUE
-        initialized = TRUE;
+        // initialization should happen once,so setting variable to true
+        initialized = true;
         // this connection is needed to properly set "DoNotDisturbResponseChanged" setting when user makes changes in
         // do not disturb response message.
         gSavedPerAccountSettings.getControl("DoNotDisturbModeResponse")->getSignal()->connect(boost::bind(&LLFloaterPreference::onDoNotDisturbResponseChanged, this));
@@ -862,7 +871,7 @@ void LLFloaterPreference::setRecommendedSettings()
 
 void LLFloaterPreference::resetAutotuneSettings()
 {
-    gSavedSettings.setBOOL("AutoTuneFPS", FALSE);
+    gSavedSettings.setBOOL("AutoTuneFPS", false);
 
     const std::string autotune_settings[] = {
         "AutoTuneLock",
@@ -976,12 +985,12 @@ void LLFloaterPreference::onBtnOK(const LLSD& userdata)
         }
 
         LLUIColorTable::instance().saveUserSettings();
-        gSavedSettings.saveToFile(gSavedSettings.getString("ClientSettingsFile"), TRUE);
+        gSavedSettings.saveToFile(gSavedSettings.getString("ClientSettingsFile"), true);
 
         //Only save once logged in and loaded per account settings
         if(mGotPersonalInfo)
         {
-            gSavedPerAccountSettings.saveToFile(gSavedSettings.getString("PerAccountSettingsFile"), TRUE);
+            gSavedPerAccountSettings.saveToFile(gSavedSettings.getString("PerAccountSettingsFile"), true);
     }
     }
     else
@@ -1012,14 +1021,15 @@ void LLFloaterPreference::onBtnCancel(const LLSD& userdata)
         }
         refresh();
     }
-    cancel();
 
     if (userdata.asString() == "closeadvanced")
     {
+        cancel({"RenderQualityPerformance"});
         LLFloaterReg::hideInstance("prefs_graphics_advanced");
     }
     else
     {
+        cancel();
         closeFloater();
     }
 }
@@ -1231,10 +1241,10 @@ void LLFloaterPreference::refreshEnabledState()
     LLCheckBoxCtrl* ctrl_pbr = getChild<LLCheckBoxCtrl>("UsePBRShaders");
 
     //PBR
-    ctrl_pbr->setEnabled(TRUE);
+    ctrl_pbr->setEnabled(true);
 
     // Cannot have floater active until caps have been received
-    getChild<LLButton>("default_creation_permissions")->setEnabled(LLStartUp::getStartupState() < STATE_STARTED ? false : true);
+    getChild<LLButton>("default_creation_permissions")->setEnabled(LLStartUp::getStartupState() >= STATE_STARTED);
 
     getChildView("block_list")->setEnabled(LLLoginInstance::getInstance()->authSuccess());
 }
@@ -1327,9 +1337,9 @@ void LLFloaterPreference::onClickEnablePopup()
     for (itor = items.begin(); itor != items.end(); ++itor)
     {
         LLNotificationTemplatePtr templatep = LLNotifications::instance().getTemplate(*(std::string*)((*itor)->getUserdata()));
-        //gSavedSettings.setWarning(templatep->mName, TRUE);
+        //gSavedSettings.setWarning(templatep->mName, true);
         std::string notification_name = templatep->mName;
-        LLUI::getInstance()->mSettingGroups["ignores"]->setBOOL(notification_name, TRUE);
+        LLUI::getInstance()->mSettingGroups["ignores"]->setBOOL(notification_name, true);
     }
 
     buildPopupLists();
@@ -1478,28 +1488,28 @@ void LLFloaterPreference::setPersonalInfo(const std::string& visibility)
     if (visibility == VISIBILITY_DEFAULT)
     {
         mOriginalHideOnlineStatus = false;
-        getChildView("online_visibility")->setEnabled(TRUE);
+        getChildView("online_visibility")->setEnabled(true);
     }
     else if (visibility == VISIBILITY_HIDDEN)
     {
         mOriginalHideOnlineStatus = true;
-        getChildView("online_visibility")->setEnabled(TRUE);
+        getChildView("online_visibility")->setEnabled(true);
     }
     else
     {
         mOriginalHideOnlineStatus = true;
     }
 
-    getChild<LLUICtrl>("online_searchresults")->setEnabled(TRUE);
-    getChildView("friends_online_notify_checkbox")->setEnabled(TRUE);
+    getChild<LLUICtrl>("online_searchresults")->setEnabled(true);
+    getChildView("friends_online_notify_checkbox")->setEnabled(true);
     getChild<LLUICtrl>("online_visibility")->setValue(mOriginalHideOnlineStatus);
     getChild<LLUICtrl>("online_visibility")->setLabelArg("[DIR_VIS]", mDirectoryVisibility);
 
-    getChildView("favorites_on_login_check")->setEnabled(TRUE);
-    getChildView("log_path_button")->setEnabled(TRUE);
-    getChildView("chat_font_size")->setEnabled(TRUE);
-    getChildView("conversation_log_combo")->setEnabled(TRUE);
-    getChild<LLUICtrl>("voice_call_friends_only_check")->setEnabled(TRUE);
+    getChildView("favorites_on_login_check")->setEnabled(true);
+    getChildView("log_path_button")->setEnabled(true);
+    getChildView("chat_font_size")->setEnabled(true);
+    getChildView("conversation_log_combo")->setEnabled(true);
+    getChild<LLUICtrl>("voice_call_friends_only_check")->setEnabled(true);
     getChild<LLUICtrl>("voice_call_friends_only_check")->setValue(gSavedPerAccountSettings.getBOOL("VoiceCallsFriendsOnly"));
 }
 
@@ -1669,6 +1679,12 @@ void LLFloaterPreference::onChangeMaturity()
     getChild<LLIconCtrl>("rating_icon_adult")->setVisible(sim_access == SIM_ACCESS_ADULT);
 }
 
+void LLFloaterPreference::onChangeComplexityMode(const LLSD& newvalue)
+{
+    bool enable_complexity = newvalue.asInteger() != LLVOAvatar::AV_RENDER_ONLY_SHOW_FRIENDS;
+    getChild<LLSliderCtrl>("IndirectMaxComplexity")->setEnabled(enable_complexity);
+}
+
 std::string get_category_path(LLFolderType::EType cat_type)
 {
     LLUUID cat_id = gInventory.findUserDefinedCategoryUUIDForType(cat_type);
@@ -1785,9 +1801,9 @@ void LLFloaterPreference::onAtmosShaderChange()
     if(ctrl_alm)
     {
         //Deferred/SSAO/Shadows
-        BOOL bumpshiny = LLCubeMap::sUseCubeMaps && LLFeatureManager::getInstance()->isFeatureAvailable("RenderObjectBump") && gSavedSettings.getBOOL("RenderObjectBump");
-        BOOL shaders = gSavedSettings.getBOOL("WindLightUseAtmosShaders");
-        BOOL enabled = LLFeatureManager::getInstance()->isFeatureAvailable("RenderDeferred") &&
+        bool bumpshiny = LLCubeMap::sUseCubeMaps && LLFeatureManager::getInstance()->isFeatureAvailable("RenderObjectBump") && gSavedSettings.getBOOL("RenderObjectBump");
+        bool shaders = gSavedSettings.getBOOL("WindLightUseAtmosShaders");
+        bool enabled = LLFeatureManager::getInstance()->isFeatureAvailable("RenderDeferred") &&
                         bumpshiny &&
                         shaders;
 
@@ -2001,12 +2017,12 @@ public:
 
 protected:
 
-    BOOL tick()
+    bool tick()
     {
         mCallback(mNewValue);
         mEventTimer.stop();
 
-        return FALSE;
+        return false;
     }
 
 private:
@@ -2028,31 +2044,31 @@ LLPanelPreference::LLPanelPreference()
 }
 
 //virtual
-BOOL LLPanelPreference::postBuild()
+bool LLPanelPreference::postBuild()
 {
     ////////////////////// PanelGeneral ///////////////////
-    if (hasChild("display_names_check", TRUE))
+    if (hasChild("display_names_check", true))
     {
-        BOOL use_people_api = gSavedSettings.getBOOL("UsePeopleAPI");
+        bool use_people_api = gSavedSettings.getBOOL("UsePeopleAPI");
         LLCheckBoxCtrl* ctrl_display_name = getChild<LLCheckBoxCtrl>("display_names_check");
         ctrl_display_name->setEnabled(use_people_api);
         if (!use_people_api)
         {
-            ctrl_display_name->setValue(FALSE);
+            ctrl_display_name->setValue(false);
         }
     }
 
     ////////////////////// PanelVoice ///////////////////
-    if (hasChild("voice_unavailable", TRUE))
+    if (hasChild("voice_unavailable", true))
     {
-        BOOL voice_disabled = gSavedSettings.getBOOL("CmdLineDisableVoice");
+        bool voice_disabled = gSavedSettings.getBOOL("CmdLineDisableVoice");
         getChildView("voice_unavailable")->setVisible( voice_disabled);
         getChildView("enable_voice_check")->setVisible( !voice_disabled);
     }
 
     //////////////////////PanelSkins ///////////////////
 
-    if (hasChild("skin_selection", TRUE))
+    if (hasChild("skin_selection", true))
     {
         LLFloaterPreference::refreshSkin(this);
 
@@ -2066,32 +2082,32 @@ BOOL LLPanelPreference::postBuild()
     }
 
     //////////////////////PanelPrivacy ///////////////////
-    if (hasChild("media_enabled", TRUE))
+    if (hasChild("media_enabled", true))
     {
         bool media_enabled = gSavedSettings.getBOOL("AudioStreamingMedia");
 
         getChild<LLCheckBoxCtrl>("media_enabled")->set(media_enabled);
         getChild<LLCheckBoxCtrl>("autoplay_enabled")->setEnabled(media_enabled);
     }
-    if (hasChild("music_enabled", TRUE))
+    if (hasChild("music_enabled", true))
     {
         getChild<LLCheckBoxCtrl>("music_enabled")->set(gSavedSettings.getBOOL("AudioStreamingMusic"));
     }
-    if (hasChild("voice_call_friends_only_check", TRUE))
+    if (hasChild("voice_call_friends_only_check", true))
     {
         getChild<LLCheckBoxCtrl>("voice_call_friends_only_check")->setCommitCallback(boost::bind(&showFriendsOnlyWarning, _1, _2));
     }
-    if (hasChild("allow_multiple_viewer_check", TRUE))
+    if (hasChild("allow_multiple_viewer_check", true))
     {
         getChild<LLCheckBoxCtrl>("allow_multiple_viewer_check")->setCommitCallback(boost::bind(&showMultipleViewersWarning, _1, _2));
     }
-    if (hasChild("favorites_on_login_check", TRUE))
+    if (hasChild("favorites_on_login_check", true))
     {
         getChild<LLCheckBoxCtrl>("favorites_on_login_check")->setCommitCallback(boost::bind(&handleFavoritesOnLoginChanged, _1, _2));
         bool show_favorites_at_login = LLPanelLogin::getShowFavorites();
         getChild<LLCheckBoxCtrl>("favorites_on_login_check")->setValue(show_favorites_at_login);
     }
-    if (hasChild("mute_chb_label", TRUE))
+    if (hasChild("mute_chb_label", true))
     {
         getChild<LLTextBox>("mute_chb_label")->setShowCursorHand(false);
         getChild<LLTextBox>("mute_chb_label")->setSoundFlags(LLView::MOUSE_UP);
@@ -2099,7 +2115,7 @@ BOOL LLPanelPreference::postBuild()
     }
 
     //////////////////////PanelSetup ///////////////////
-    if (hasChild("max_bandwidth", TRUE))
+    if (hasChild("max_bandwidth", true))
     {
         mBandWidthUpdater = new LLPanelPreference::Updater(boost::bind(&handleBandwidthChanged, _1), BANDWIDTH_UPDATER_TIMEOUT);
         gSavedSettings.getControl("ThrottleBandwidthKBPS")->getSignal()->connect(boost::bind(&LLPanelPreference::Updater::update, mBandWidthUpdater, _2));
@@ -2228,7 +2244,7 @@ void LLPanelPreference::toggleMuteWhenMinimized()
     }
 }
 
-void LLPanelPreference::cancel()
+void LLPanelPreference::cancel(const std::vector<std::string> settings_to_skip)
 {
     for (control_values_map_t::iterator iter =  mSavedValues.begin();
          iter !=  mSavedValues.end(); ++iter)
@@ -2241,6 +2257,12 @@ void LLPanelPreference::cancel()
             continue;
         }
 
+        auto found = std::find(settings_to_skip.begin(), settings_to_skip.end(), control->getName());
+        if (found != settings_to_skip.end())
+        {
+            continue;
+        }
+
         control->set(ctrl_value);
     }
 
@@ -2262,7 +2284,7 @@ void LLPanelPreference::setControlFalse(const LLSD& user_data)
     LLControlVariable* control = findControl(control_name);
 
     if (control)
-        control->set(LLSD(FALSE));
+        control->set(LLSD(false));
 }
 
 void LLPanelPreference::updateMediaAutoPlayCheckbox(LLUICtrl* ctrl)
@@ -2339,7 +2361,7 @@ private:
 static LLPanelInjector<LLPanelPreferenceGraphics> t_pref_graph("panel_preference_graphics");
 static LLPanelInjector<LLPanelPreferencePrivacy> t_pref_privacy("panel_preference_privacy");
 
-BOOL LLPanelPreferenceGraphics::postBuild()
+bool LLPanelPreferenceGraphics::postBuild()
 {
     LLFloaterReg::showInstance("prefs_graphics_advanced");
     LLFloaterReg::hideInstance("prefs_graphics_advanced");
@@ -2483,9 +2505,9 @@ void LLPanelPreferenceGraphics::resetDirtyChilds()
     }
 }
 
-void LLPanelPreferenceGraphics::cancel()
+void LLPanelPreferenceGraphics::cancel(const std::vector<std::string> settings_to_skip)
 {
-    LLPanelPreference::cancel();
+    LLPanelPreference::cancel(settings_to_skip);
 }
 void LLPanelPreferenceGraphics::saveSettings()
 {
@@ -2526,7 +2548,7 @@ LLPanelPreferenceControls::~LLPanelPreferenceControls()
 {
 }
 
-BOOL LLPanelPreferenceControls::postBuild()
+bool LLPanelPreferenceControls::postBuild()
 {
     // populate list of controls
     pControlsTable = getChild<LLScrollListCtrl>("controls_list");
@@ -2536,7 +2558,7 @@ BOOL LLPanelPreferenceControls::postBuild()
     pKeyModeBox->setCommitCallback(boost::bind(&LLPanelPreferenceControls::onModeCommit, this));
     getChild<LLButton>("restore_defaults")->setCommitCallback(boost::bind(&LLPanelPreferenceControls::onRestoreDefaultsBtn, this));
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelPreferenceControls::regenerateControls()
@@ -2773,7 +2795,7 @@ void LLPanelPreferenceControls::apply()
     }
 }
 
-void LLPanelPreferenceControls::cancel()
+void LLPanelPreferenceControls::cancel(const std::vector<std::string> settings_to_skip)
 {
     for (U32 i = 0; i < LLKeyConflictHandler::MODE_COUNT - 1; ++i)
     {
@@ -2862,7 +2884,7 @@ void LLPanelPreferenceControls::onListCommit()
             if (root_floater)
                 root_floater->addDependentFloater(dialog);
             dialog->openFloater();
-            dialog->setFocus(TRUE);
+            dialog->setFocus(true);
         }
     }
     else
@@ -3128,12 +3150,12 @@ LLFloaterPreferenceProxy::~LLFloaterPreferenceProxy()
 {
 }
 
-BOOL LLFloaterPreferenceProxy::postBuild()
+bool LLFloaterPreferenceProxy::postBuild()
 {
     LLRadioGroup* socksAuth = getChild<LLRadioGroup>("socks5_auth_type");
     if (!socksAuth)
     {
-        return FALSE;
+        return false;
     }
     if (socksAuth->getSelectedValue().asString() == "None")
     {
@@ -3148,7 +3170,7 @@ BOOL LLFloaterPreferenceProxy::postBuild()
         getChild<LLLineEditor>("socks5_password")->setValue(socks_cred->getAuthenticator()["creds"].asString());
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterPreferenceProxy::onOpen(const LLSD& key)
@@ -3300,9 +3322,9 @@ void LLFloaterPreferenceProxy::onChangeSocksSettings()
     // Check for invalid states for the other HTTP proxy radio
     LLRadioGroup* otherHttpProxy = getChild<LLRadioGroup>("other_http_proxy_type");
     if ((otherHttpProxy->getSelectedValue().asString() == "Socks" &&
-            getChild<LLCheckBoxCtrl>("socks_proxy_enabled")->get() == FALSE )||(
+            !getChild<LLCheckBoxCtrl>("socks_proxy_enabled")->get())||(
                     otherHttpProxy->getSelectedValue().asString() == "Web" &&
-                    getChild<LLCheckBoxCtrl>("web_proxy_enabled")->get() == FALSE ) )
+                    !getChild<LLCheckBoxCtrl>("web_proxy_enabled")->get()))
     {
         otherHttpProxy->selectFirstItem();
     }
@@ -3311,10 +3333,10 @@ void LLFloaterPreferenceProxy::onChangeSocksSettings()
 
 void LLFloaterPreference::onUpdateFilterTerm(bool force)
 {
-    LLWString seachValue = utf8str_to_wstring( mFilterEdit->getValue() );
-    LLWStringUtil::toLower( seachValue );
+    LLWString seachValue = utf8str_to_wstring(mFilterEdit->getValue());
+    LLWStringUtil::toLower(seachValue);
 
-    if( !mSearchData || (mSearchData->mLastFilter == seachValue && !force))
+    if (!mSearchData || (mSearchData->mLastFilter == seachValue && !force))
         return;
 
     if (mSearchDataDirty)
@@ -3325,14 +3347,13 @@ void LLFloaterPreference::onUpdateFilterTerm(bool force)
 
     mSearchData->mLastFilter = seachValue;
 
-    if( !mSearchData->mRootTab )
+    if (!mSearchData->mRootTab)
         return;
 
     mSearchData->mRootTab->hightlightAndHide( seachValue );
     filterIgnorableNotifications();
 
-    LLTabContainer *pRoot = getChild< LLTabContainer >( "pref core" );
-    if( pRoot )
+    if (LLTabContainer* pRoot = getChild<LLTabContainer>("pref core"))
         pRoot->selectFirstTab();
 }
 
@@ -3349,72 +3370,69 @@ void LLFloaterPreference::filterIgnorableNotifications()
 
 void collectChildren( LLView const *aView, ll::prefs::PanelDataPtr aParentPanel, ll::prefs::TabContainerDataPtr aParentTabContainer )
 {
-    if( !aView )
+    if (!aView)
         return;
 
-    llassert_always( aParentPanel || aParentTabContainer );
+    llassert_always(aParentPanel || aParentTabContainer);
 
-    LLView::child_list_const_iter_t itr = aView->beginChild();
-    LLView::child_list_const_iter_t itrEnd = aView->endChild();
-
-    while( itr != itrEnd )
+    for (LLView* pView : *aView->getChildList())
     {
-        LLView *pView = *itr;
+        if (!pView)
+            continue;
+
         ll::prefs::PanelDataPtr pCurPanelData = aParentPanel;
         ll::prefs::TabContainerDataPtr pCurTabContainer = aParentTabContainer;
-        if( !pView )
-            continue;
-        LLPanel const *pPanel = dynamic_cast< LLPanel const *>( pView );
-        LLTabContainer const *pTabContainer = dynamic_cast< LLTabContainer const *>( pView );
-        ll::ui::SearchableControl const *pSCtrl = dynamic_cast< ll::ui::SearchableControl const *>( pView );
 
-        if( pTabContainer )
+        LLPanel const *pPanel = dynamic_cast<LLPanel const*>(pView);
+        LLTabContainer const *pTabContainer = dynamic_cast<LLTabContainer const*>(pView);
+        ll::ui::SearchableControl const *pSCtrl = dynamic_cast<ll::ui::SearchableControl const*>( pView );
+
+        if (pTabContainer)
         {
             pCurPanelData.reset();
 
-            pCurTabContainer = ll::prefs::TabContainerDataPtr( new ll::prefs::TabContainerData );
-            pCurTabContainer->mTabContainer = const_cast< LLTabContainer *>( pTabContainer );
+            pCurTabContainer = ll::prefs::TabContainerDataPtr(new ll::prefs::TabContainerData);
+            pCurTabContainer->mTabContainer = const_cast< LLTabContainer *>(pTabContainer);
             pCurTabContainer->mLabel = pTabContainer->getLabel();
             pCurTabContainer->mPanel = 0;
 
-            if( aParentPanel )
-                aParentPanel->mChildPanel.push_back( pCurTabContainer );
-            if( aParentTabContainer )
-                aParentTabContainer->mChildPanel.push_back( pCurTabContainer );
+            if (aParentPanel)
+                aParentPanel->mChildPanel.push_back(pCurTabContainer);
+            if (aParentTabContainer)
+                aParentTabContainer->mChildPanel.push_back(pCurTabContainer);
         }
-        else if( pPanel )
+        else if (pPanel)
         {
             pCurTabContainer.reset();
 
-            pCurPanelData = ll::prefs::PanelDataPtr( new ll::prefs::PanelData );
+            pCurPanelData = ll::prefs::PanelDataPtr(new ll::prefs::PanelData);
             pCurPanelData->mPanel = pPanel;
             pCurPanelData->mLabel = pPanel->getLabel();
 
             llassert_always( aParentPanel || aParentTabContainer );
 
-            if( aParentTabContainer )
-                aParentTabContainer->mChildPanel.push_back( pCurPanelData );
-            else if( aParentPanel )
-                aParentPanel->mChildPanel.push_back( pCurPanelData );
+            if (aParentTabContainer)
+                aParentTabContainer->mChildPanel.push_back(pCurPanelData);
+            else if (aParentPanel)
+                aParentPanel->mChildPanel.push_back(pCurPanelData);
         }
-        else if( pSCtrl && pSCtrl->getSearchText().size() )
+        else if (pSCtrl && pSCtrl->getSearchText().size())
         {
-            ll::prefs::SearchableItemPtr item = ll::prefs::SearchableItemPtr( new ll::prefs::SearchableItem() );
+            ll::prefs::SearchableItemPtr item = ll::prefs::SearchableItemPtr(new ll::prefs::SearchableItem());
             item->mView = pView;
             item->mCtrl = pSCtrl;
 
-            item->mLabel = utf8str_to_wstring( pSCtrl->getSearchText() );
-            LLWStringUtil::toLower( item->mLabel );
+            item->mLabel = utf8str_to_wstring(pSCtrl->getSearchText());
+            LLWStringUtil::toLower(item->mLabel);
 
-            llassert_always( aParentPanel || aParentTabContainer );
+            llassert_always(aParentPanel || aParentTabContainer);
 
-            if( aParentPanel )
-                aParentPanel->mChildren.push_back( item );
-            if( aParentTabContainer )
-                aParentTabContainer->mChildren.push_back( item );
+            if (aParentPanel)
+                aParentPanel->mChildren.push_back(item);
+            if (aParentTabContainer)
+                aParentTabContainer->mChildren.push_back(item);
         }
-        collectChildren( pView, pCurPanelData, pCurTabContainer );
-        ++itr;
+        collectChildren(pView, pCurPanelData, pCurTabContainer);
     }
 }
 
diff --git a/indra/newview/llfloaterpreference.h b/indra/newview/llfloaterpreference.h
index bb7892362c..c26569f17c 100644
--- a/indra/newview/llfloaterpreference.h
+++ b/indra/newview/llfloaterpreference.h
@@ -79,9 +79,9 @@ public:
     ~LLFloaterPreference();
 
     void apply();
-    void cancel();
+    void cancel(const std::vector<std::string> settings_to_skip = {});
     /*virtual*/ void draw();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
     /*virtual*/ void onClose(bool app_quitting);
     /*virtual*/ void changed();
@@ -164,7 +164,6 @@ public:
     void onClickLogPath();
     void changeLogPath(const std::vector<std::string>& filenames, std::string proposed_name);
     bool moveTranscriptsAndLog();
-    void enableHistory();
     void setPersonalInfo(const std::string& visibility);
     void refreshEnabledState();
     void onCommitWindowedMode();
@@ -174,10 +173,8 @@ public:
 
     void refreshUI();
 
-    void onCommitMediaEnabled();
-    void onCommitMusicEnabled();
-    void applyResolution();
     void onChangeMaturity();
+    void onChangeComplexityMode(const LLSD& newvalue);
     void onChangeModelFolder();
     void onChangePBRFolder();
     void onChangeTextureFolder();
@@ -199,7 +196,6 @@ public:
     void buildPopupLists();
     static void refreshSkin(void* data);
     void selectPanel(const LLSD& name);
-    void saveCameraPreset(std::string& preset);
     void saveGraphicsPreset(std::string& preset);
 
     void setRecommendedSettings();
@@ -250,12 +246,12 @@ class LLPanelPreference : public LLPanel
 {
 public:
     LLPanelPreference();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     virtual ~LLPanelPreference();
 
     virtual void apply();
-    virtual void cancel();
+    virtual void cancel(const std::vector<std::string> settings_to_skip = {});
     void setControlFalse(const LLSD& user_data);
     virtual void setHardwareDefaults();
 
@@ -296,16 +292,14 @@ private:
 class LLPanelPreferenceGraphics : public LLPanelPreference
 {
 public:
-    BOOL postBuild();
+    bool postBuild();
     void draw();
-    void cancel();
+    void cancel(const std::vector<std::string> settings_to_skip = {});
     void saveSettings();
     void resetDirtyChilds();
     void setHardwareDefaults();
     void setPresetText();
 
-    static const std::string getPresetsPath();
-
 protected:
     bool hasDirtyChilds();
 
@@ -321,10 +315,10 @@ public:
     LLPanelPreferenceControls();
     virtual ~LLPanelPreferenceControls();
 
-    BOOL postBuild();
+    bool postBuild();
 
     void apply();
-    void cancel();
+    void cancel(const std::vector<std::string> settings_to_skip = {});
     void saveSettings();
     void resetDirtyChilds();
 
@@ -392,7 +386,7 @@ public:
     void cancel();
 
 protected:
-    BOOL postBuild();
+    bool postBuild();
     void onOpen(const LLSD& key);
     void onClose(bool app_quitting);
     void saveSettings();
diff --git a/indra/newview/llfloaterpreferencesgraphicsadvanced.cpp b/indra/newview/llfloaterpreferencesgraphicsadvanced.cpp
index ae1c5cf6c9..7c9fa161d5 100644
--- a/indra/newview/llfloaterpreferencesgraphicsadvanced.cpp
+++ b/indra/newview/llfloaterpreferencesgraphicsadvanced.cpp
@@ -51,18 +51,17 @@ LLFloaterPreferenceGraphicsAdvanced::LLFloaterPreferenceGraphicsAdvanced(const L
 
     mCommitCallbackRegistrar.add("Pref.Cancel", boost::bind(&LLFloaterPreferenceGraphicsAdvanced::onBtnCancel, this, _2));
     mCommitCallbackRegistrar.add("Pref.OK",     boost::bind(&LLFloaterPreferenceGraphicsAdvanced::onBtnOK, this, _2));
-
-    mImpostorsChangedSignal = gSavedSettings.getControl("RenderAvatarMaxNonImpostors")->getSignal()->connect(boost::bind(&LLFloaterPreferenceGraphicsAdvanced::updateIndirectMaxNonImpostors, this, _2));
 }
 
 LLFloaterPreferenceGraphicsAdvanced::~LLFloaterPreferenceGraphicsAdvanced()
 {
     mComplexityChangedSignal.disconnect();
+    mComplexityModeChangedSignal.disconnect();
     mLODFactorChangedSignal.disconnect();
-    mImpostorsChangedSignal.disconnect();
+    mNumImpostorsChangedSignal.disconnect();
 }
 
-BOOL LLFloaterPreferenceGraphicsAdvanced::postBuild()
+bool LLFloaterPreferenceGraphicsAdvanced::postBuild()
 {
     // Don't do this on Mac as their braindead GL versioning
     // sets this when 8x and 16x are indeed available
@@ -76,12 +75,30 @@ BOOL LLFloaterPreferenceGraphicsAdvanced::postBuild()
     }
 
     LLCheckBoxCtrl *use_HiDPI = getChild<LLCheckBoxCtrl>("use HiDPI");
-    use_HiDPI->setVisible(FALSE);
+    use_HiDPI->setVisible(false);
 #endif
 
-    mComplexityChangedSignal = gSavedSettings.getControl("RenderAvatarMaxComplexity")->getCommitSignal()->connect(boost::bind(&LLFloaterPreferenceGraphicsAdvanced::updateComplexityText, this));
-    mLODFactorChangedSignal = gSavedSettings.getControl("RenderVolumeLODFactor")->getCommitSignal()->connect(boost::bind(&LLFloaterPreferenceGraphicsAdvanced::updateObjectMeshDetailText, this));
-    return TRUE;
+    mComplexityChangedSignal = gSavedSettings.getControl("RenderAvatarMaxComplexity")->getCommitSignal()->connect(
+        [this](LLControlVariable* control, const LLSD& new_val, const LLSD& old_val)
+        {
+            updateComplexityText();
+        });
+    mComplexityModeChangedSignal = gSavedSettings.getControl("RenderAvatarComplexityMode")->getSignal()->connect(
+        [this](LLControlVariable* control, const LLSD& new_val, const LLSD& old_val)
+        {
+            updateComplexityMode(new_val);
+        });
+    mLODFactorChangedSignal = gSavedSettings.getControl("RenderVolumeLODFactor")->getCommitSignal()->connect(
+        [this](LLControlVariable* control, const LLSD& new_val, const LLSD& old_val)
+        {
+            updateObjectMeshDetailText();
+        });
+    mNumImpostorsChangedSignal = gSavedSettings.getControl("RenderAvatarMaxNonImpostors")->getSignal()->connect(
+        [this](LLControlVariable* control, const LLSD& new_val, const LLSD& old_val)
+        {
+            updateIndirectMaxNonImpostors(new_val);
+        });
+    return true;
 }
 
 void LLFloaterPreferenceGraphicsAdvanced::onOpen(const LLSD& key)
@@ -94,7 +111,7 @@ void LLFloaterPreferenceGraphicsAdvanced::onClickCloseBtn(bool app_quitting)
     LLFloaterPreference* instance = LLFloaterReg::findTypedInstance<LLFloaterPreference>("preferences");
     if (instance)
     {
-        instance->cancel();
+        instance->cancel({"RenderQualityPerformance"});
     }
     updateMaxComplexity();
 }
@@ -145,6 +162,10 @@ void LLFloaterPreferenceGraphicsAdvanced::refresh()
         gSavedSettings.getU32("RenderAvatarMaxComplexity"),
         getChild<LLTextBox>("IndirectMaxComplexityText", true));
     refreshEnabledState();
+
+    bool enable_complexity = gSavedSettings.getS32("RenderAvatarComplexityMode") != LLVOAvatar::AV_RENDER_ONLY_SHOW_FRIENDS;
+    getChild<LLSliderCtrl>("IndirectMaxComplexity")->setEnabled(enable_complexity);
+    getChild<LLSliderCtrl>("IndirectMaxNonImpostors")->setEnabled(enable_complexity);
 }
 
 void LLFloaterPreferenceGraphicsAdvanced::refreshEnabledGraphics()
@@ -160,6 +181,13 @@ void LLFloaterPreferenceGraphicsAdvanced::updateMaxComplexity()
         getChild<LLTextBox>("IndirectMaxComplexityText"));
 }
 
+void LLFloaterPreferenceGraphicsAdvanced::updateComplexityMode(const LLSD& newvalue)
+{
+    bool enable_complexity = newvalue.asInteger() != LLVOAvatar::AV_RENDER_ONLY_SHOW_FRIENDS;
+    getChild<LLSliderCtrl>("IndirectMaxComplexity")->setEnabled(enable_complexity);
+    getChild<LLSliderCtrl>("IndirectMaxNonImpostors")->setEnabled(enable_complexity);
+}
+
 void LLFloaterPreferenceGraphicsAdvanced::updateComplexityText()
 {
     LLAvatarComplexityControls::setText(gSavedSettings.getU32("RenderAvatarMaxComplexity"),
@@ -256,96 +284,96 @@ void LLFloaterPreferenceGraphicsAdvanced::disableUnavailableSettings()
     // disabled windlight
     if (!LLFeatureManager::getInstance()->isFeatureAvailable("WindLightUseAtmosShaders"))
     {
-        ctrl_wind_light->setEnabled(FALSE);
-        ctrl_wind_light->setValue(FALSE);
+        ctrl_wind_light->setEnabled(false);
+        ctrl_wind_light->setValue(false);
 
-        sky->setEnabled(FALSE);
-        sky_text->setEnabled(FALSE);
+        sky->setEnabled(false);
+        sky_text->setEnabled(false);
 
         //deferred needs windlight, disable deferred
-        ctrl_shadows->setEnabled(FALSE);
+        ctrl_shadows->setEnabled(false);
         ctrl_shadows->setValue(0);
-        shadows_text->setEnabled(FALSE);
+        shadows_text->setEnabled(false);
 
-        ctrl_ssao->setEnabled(FALSE);
-        ctrl_ssao->setValue(FALSE);
+        ctrl_ssao->setEnabled(false);
+        ctrl_ssao->setValue(false);
 
-        ctrl_dof->setEnabled(FALSE);
-        ctrl_dof->setValue(FALSE);
+        ctrl_dof->setEnabled(false);
+        ctrl_dof->setValue(false);
 
-        ctrl_deferred->setEnabled(FALSE);
-        ctrl_deferred->setValue(FALSE);
+        ctrl_deferred->setEnabled(false);
+        ctrl_deferred->setValue(false);
     }
 
     // disabled deferred
     if (!LLFeatureManager::getInstance()->isFeatureAvailable("RenderDeferred"))
     {
-        ctrl_shadows->setEnabled(FALSE);
+        ctrl_shadows->setEnabled(false);
         ctrl_shadows->setValue(0);
-        shadows_text->setEnabled(FALSE);
+        shadows_text->setEnabled(false);
 
-        ctrl_ssao->setEnabled(FALSE);
-        ctrl_ssao->setValue(FALSE);
+        ctrl_ssao->setEnabled(false);
+        ctrl_ssao->setValue(false);
 
-        ctrl_dof->setEnabled(FALSE);
-        ctrl_dof->setValue(FALSE);
+        ctrl_dof->setEnabled(false);
+        ctrl_dof->setValue(false);
 
-        ctrl_deferred->setEnabled(FALSE);
-        ctrl_deferred->setValue(FALSE);
+        ctrl_deferred->setEnabled(false);
+        ctrl_deferred->setValue(false);
     }
 
     // disabled deferred SSAO
     if (!LLFeatureManager::getInstance()->isFeatureAvailable("RenderDeferredSSAO"))
     {
-        ctrl_ssao->setEnabled(FALSE);
-        ctrl_ssao->setValue(FALSE);
+        ctrl_ssao->setEnabled(false);
+        ctrl_ssao->setValue(false);
     }
 
     // disabled deferred shadows
     if (!LLFeatureManager::getInstance()->isFeatureAvailable("RenderShadowDetail"))
     {
-        ctrl_shadows->setEnabled(FALSE);
+        ctrl_shadows->setEnabled(false);
         ctrl_shadows->setValue(0);
-        shadows_text->setEnabled(FALSE);
+        shadows_text->setEnabled(false);
     }
 
     // disabled reflections
     if (!LLFeatureManager::getInstance()->isFeatureAvailable("RenderReflectionDetail"))
     {
-        ctrl_reflections->setEnabled(FALSE);
-        ctrl_reflections->setValue(FALSE);
-        reflections_text->setEnabled(FALSE);
+        ctrl_reflections->setEnabled(false);
+        ctrl_reflections->setValue(false);
+        reflections_text->setEnabled(false);
     }
 
     // disabled av
     if (!LLFeatureManager::getInstance()->isFeatureAvailable("RenderAvatarVP"))
     {
-        ctrl_avatar_vp->setEnabled(FALSE);
-        ctrl_avatar_vp->setValue(FALSE);
+        ctrl_avatar_vp->setEnabled(false);
+        ctrl_avatar_vp->setValue(false);
 
-        ctrl_avatar_cloth->setEnabled(FALSE);
-        ctrl_avatar_cloth->setValue(FALSE);
+        ctrl_avatar_cloth->setEnabled(false);
+        ctrl_avatar_cloth->setValue(false);
 
         //deferred needs AvatarVP, disable deferred
-        ctrl_shadows->setEnabled(FALSE);
+        ctrl_shadows->setEnabled(false);
         ctrl_shadows->setValue(0);
-        shadows_text->setEnabled(FALSE);
+        shadows_text->setEnabled(false);
 
-        ctrl_ssao->setEnabled(FALSE);
-        ctrl_ssao->setValue(FALSE);
+        ctrl_ssao->setEnabled(false);
+        ctrl_ssao->setValue(false);
 
-        ctrl_dof->setEnabled(FALSE);
-        ctrl_dof->setValue(FALSE);
+        ctrl_dof->setEnabled(false);
+        ctrl_dof->setValue(false);
 
-        ctrl_deferred->setEnabled(FALSE);
-        ctrl_deferred->setValue(FALSE);
+        ctrl_deferred->setEnabled(false);
+        ctrl_deferred->setValue(false);
     }
 
     // disabled cloth
     if (!LLFeatureManager::getInstance()->isFeatureAvailable("RenderAvatarCloth"))
     {
-        ctrl_avatar_cloth->setEnabled(FALSE);
-        ctrl_avatar_cloth->setValue(FALSE);
+        ctrl_avatar_cloth->setEnabled(false);
+        ctrl_avatar_cloth->setValue(false);
     }
 }
 
@@ -355,14 +383,14 @@ void LLFloaterPreferenceGraphicsAdvanced::refreshEnabledState()
     LLTextBox* reflections_text = getChild<LLTextBox>("ReflectionsText");
 
     // Reflections
-    BOOL reflections = LLCubeMap::sUseCubeMaps;
+    bool reflections = LLCubeMap::sUseCubeMaps;
     ctrl_reflections->setEnabled(reflections);
     reflections_text->setEnabled(reflections);
 
     // Bump & Shiny
     LLCheckBoxCtrl* bumpshiny_ctrl = getChild<LLCheckBoxCtrl>("BumpShiny");
     bool bumpshiny = LLCubeMap::sUseCubeMaps && LLFeatureManager::getInstance()->isFeatureAvailable("RenderObjectBump");
-    bumpshiny_ctrl->setEnabled(bumpshiny ? TRUE : FALSE);
+    bumpshiny_ctrl->setEnabled(bumpshiny);
 
     // Avatar Mode
     // Enable Avatar Shaders
@@ -374,44 +402,37 @@ void LLFloaterPreferenceGraphicsAdvanced::refreshEnabledState()
     if (LLViewerShaderMgr::sInitialized)
     {
         S32 max_avatar_shader = LLViewerShaderMgr::instance()->mMaxAvatarShaderLevel;
-        avatar_vp_enabled = (max_avatar_shader > 0) ? TRUE : FALSE;
+        avatar_vp_enabled = max_avatar_shader > 0;
     }
 
     ctrl_avatar_vp->setEnabled(avatar_vp_enabled);
 
-    if (gSavedSettings.getBOOL("RenderAvatarVP") == FALSE)
-    {
-        ctrl_avatar_cloth->setEnabled(FALSE);
-    }
-    else
-    {
-        ctrl_avatar_cloth->setEnabled(TRUE);
-    }
+    ctrl_avatar_cloth->setEnabled(gSavedSettings.getBOOL("RenderAvatarVP"));
 
     // Vertex Shaders, Global Shader Enable
     // SL-12594 Basic shaders are always enabled. DJH TODO clean up now-orphaned state handling code
     LLSliderCtrl* terrain_detail = getChild<LLSliderCtrl>("TerrainDetail");   // can be linked with control var
     LLTextBox* terrain_text = getChild<LLTextBox>("TerrainDetailText");
 
-    terrain_detail->setEnabled(FALSE);
-    terrain_text->setEnabled(FALSE);
+    terrain_detail->setEnabled(false);
+    terrain_text->setEnabled(false);
 
     // WindLight
     //LLCheckBoxCtrl* ctrl_wind_light = getChild<LLCheckBoxCtrl>("WindLightUseAtmosShaders");
-    //ctrl_wind_light->setEnabled(TRUE);
+    //ctrl_wind_light->setEnabled(true);
     LLSliderCtrl* sky = getChild<LLSliderCtrl>("SkyMeshDetail");
     LLTextBox* sky_text = getChild<LLTextBox>("SkyMeshDetailText");
-    sky->setEnabled(TRUE);
-    sky_text->setEnabled(TRUE);
+    sky->setEnabled(true);
+    sky_text->setEnabled(true);
 
-    BOOL enabled = TRUE;
+    bool enabled = true;
 #if 0 // deferred always on now
     //Deferred/SSAO/Shadows
     LLCheckBoxCtrl* ctrl_deferred = getChild<LLCheckBoxCtrl>("UseLightShaders");
 
     enabled = LLFeatureManager::getInstance()->isFeatureAvailable("RenderDeferred") &&
-        ((bumpshiny_ctrl && bumpshiny_ctrl->get()) ? TRUE : FALSE) &&
-        (ctrl_wind_light->get()) ? TRUE : FALSE;
+        bumpshiny_ctrl && bumpshiny_ctrl->get() &&
+        ctrl_wind_light->get();
 
     ctrl_deferred->setEnabled(enabled);
 #endif
@@ -419,7 +440,7 @@ void LLFloaterPreferenceGraphicsAdvanced::refreshEnabledState()
     LLCheckBoxCtrl* ctrl_pbr = getChild<LLCheckBoxCtrl>("UsePBRShaders");
 
     //PBR
-    ctrl_pbr->setEnabled(TRUE);
+    ctrl_pbr->setEnabled(true);
 
     LLCheckBoxCtrl* ctrl_ssao = getChild<LLCheckBoxCtrl>("UseSSAO");
     LLCheckBoxCtrl* ctrl_dof = getChild<LLCheckBoxCtrl>("UseDoF");
@@ -427,7 +448,7 @@ void LLFloaterPreferenceGraphicsAdvanced::refreshEnabledState()
     LLTextBox* shadow_text = getChild<LLTextBox>("RenderShadowDetailText");
 
     // note, okay here to get from ctrl_deferred as it's twin, ctrl_deferred2 will alway match it
-    enabled = enabled && LLFeatureManager::getInstance()->isFeatureAvailable("RenderDeferredSSAO");// && (ctrl_deferred->get() ? TRUE : FALSE);
+    enabled = enabled && LLFeatureManager::getInstance()->isFeatureAvailable("RenderDeferredSSAO");// && ctrl_deferred->get();
 
     //ctrl_deferred->set(gSavedSettings.getBOOL("RenderDeferred"));
 
@@ -443,12 +464,12 @@ void LLFloaterPreferenceGraphicsAdvanced::refreshEnabledState()
 
     if (!LLFeatureManager::getInstance()->isFeatureAvailable("RenderVBOEnable"))
     {
-        getChildView("vbo")->setEnabled(FALSE);
+        getChildView("vbo")->setEnabled(false);
     }
 
     if (!LLFeatureManager::getInstance()->isFeatureAvailable("RenderCompressTextures"))
     {
-        getChildView("texture compression")->setEnabled(FALSE);
+        getChildView("texture compression")->setEnabled(false);
     }
 
     // if no windlight shaders, turn off nighttime brightness, gamma, and fog distance
diff --git a/indra/newview/llfloaterpreferencesgraphicsadvanced.h b/indra/newview/llfloaterpreferencesgraphicsadvanced.h
index bab51b712b..61203be068 100644
--- a/indra/newview/llfloaterpreferencesgraphicsadvanced.h
+++ b/indra/newview/llfloaterpreferencesgraphicsadvanced.h
@@ -37,7 +37,7 @@ class LLFloaterPreferenceGraphicsAdvanced : public LLFloater
 public:
     LLFloaterPreferenceGraphicsAdvanced(const LLSD& key);
     ~LLFloaterPreferenceGraphicsAdvanced();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     void onOpen(const LLSD& key);
     void onClickCloseBtn(bool app_quitting);
     void disableUnavailableSettings();
@@ -48,6 +48,7 @@ public:
     void updateIndirectMaxNonImpostors(const LLSD& newvalue);
     void setMaxNonImpostorsText(U32 value, LLTextBox* text_box);
     void updateMaxComplexity();
+    void updateComplexityMode(const LLSD& newvalue);
     void updateComplexityText();
     void updateObjectMeshDetailText();
     void refresh();
@@ -60,9 +61,10 @@ protected:
     void        onBtnOK(const LLSD& userdata);
     void        onBtnCancel(const LLSD& userdata);
 
-    boost::signals2::connection mImpostorsChangedSignal;
     boost::signals2::connection mComplexityChangedSignal;
+    boost::signals2::connection mComplexityModeChangedSignal;
     boost::signals2::connection mLODFactorChangedSignal;
+    boost::signals2::connection mNumImpostorsChangedSignal;
 };
 
 #endif //LLFLOATERPREFERENCEGRAPHICSADVANCED_H
diff --git a/indra/newview/llfloaterpreviewtrash.cpp b/indra/newview/llfloaterpreviewtrash.cpp
index af33e43109..21e7585c40 100644
--- a/indra/newview/llfloaterpreviewtrash.cpp
+++ b/indra/newview/llfloaterpreviewtrash.cpp
@@ -37,7 +37,7 @@ LLFloaterPreviewTrash::LLFloaterPreviewTrash(const LLSD& key)
 {
 }
 
-BOOL LLFloaterPreviewTrash::postBuild()
+bool LLFloaterPreviewTrash::postBuild()
 {
     getChild<LLUICtrl>("empty_btn")->setCommitCallback(
         boost::bind(&LLFloaterPreviewTrash::onClickEmpty, this));
@@ -49,7 +49,7 @@ BOOL LLFloaterPreviewTrash::postBuild()
     // mid-session and the saved rect is off-center.
     center();
 
-    return TRUE;
+    return true;
 }
 
 LLFloaterPreviewTrash::~LLFloaterPreviewTrash()
@@ -60,7 +60,7 @@ LLFloaterPreviewTrash::~LLFloaterPreviewTrash()
 // static
 void LLFloaterPreviewTrash::show()
 {
-    LLFloaterReg::showTypedInstance<LLFloaterPreviewTrash>("preview_trash", LLSD(), TRUE);
+    LLFloaterReg::showTypedInstance<LLFloaterPreviewTrash>("preview_trash", LLSD(), true);
 }
 
 // static
diff --git a/indra/newview/llfloaterpreviewtrash.h b/indra/newview/llfloaterpreviewtrash.h
index 7d130077c5..2be36cb188 100644
--- a/indra/newview/llfloaterpreviewtrash.h
+++ b/indra/newview/llfloaterpreviewtrash.h
@@ -39,7 +39,7 @@ public:
 
     LLFloaterPreviewTrash(const LLSD& key);
     ~LLFloaterPreviewTrash();
-    /*virtual*/ BOOL    postBuild();
+    bool postBuild() override;
 
 protected:
     void onClickEmpty();
diff --git a/indra/newview/llfloaterprofile.cpp b/indra/newview/llfloaterprofile.cpp
index 8df42a4faa..ee92785b6f 100644
--- a/indra/newview/llfloaterprofile.cpp
+++ b/indra/newview/llfloaterprofile.cpp
@@ -59,11 +59,11 @@ void LLFloaterProfile::onOpen(const LLSD& key)
     mNameCallbackConnection = LLAvatarNameCache::get(mAvatarId, boost::bind(&LLFloaterProfile::onAvatarNameCache, this, _1, _2));
 }
 
-BOOL LLFloaterProfile::postBuild()
+bool LLFloaterProfile::postBuild()
 {
     mPanelProfile = findChild<LLPanelProfile>(PANEL_PROFILE_VIEW);
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterProfile::onClickCloseBtn(bool app_quitting)
diff --git a/indra/newview/llfloaterprofile.h b/indra/newview/llfloaterprofile.h
index b3ed02fc2c..20c82c07b1 100644
--- a/indra/newview/llfloaterprofile.h
+++ b/indra/newview/llfloaterprofile.h
@@ -40,7 +40,7 @@ public:
     LLFloaterProfile(const LLSD& key);
     virtual ~LLFloaterProfile();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void onOpen(const LLSD& key) override;
     void onClickCloseBtn(bool app_quitting = false) override;
diff --git a/indra/newview/llfloaterprofiletexture.cpp b/indra/newview/llfloaterprofiletexture.cpp
index 7108047a6b..47b3aa015b 100644
--- a/indra/newview/llfloaterprofiletexture.cpp
+++ b/indra/newview/llfloaterprofiletexture.cpp
@@ -129,7 +129,7 @@ void LLProfileImageCtrl::setImageAssetId(const LLUUID& asset_id)
         if ((mImage->getFullWidth() * mImage->getFullHeight()) == 0)
         {
             mImage->setLoadedCallback(LLProfileImageCtrl::onImageLoaded,
-                                      0, TRUE, FALSE, new LLHandle<LLUICtrl>(getHandle()), &mCallbackTextureList);
+                                      0, true, false, new LLHandle<LLUICtrl>(getHandle()), &mCallbackTextureList);
         }
         else
         {
@@ -147,12 +147,12 @@ void LLProfileImageCtrl::onImageLoaded(bool success, LLViewerFetchedTexture* img
 }
 
 // static
-void LLProfileImageCtrl::onImageLoaded(BOOL success,
+void LLProfileImageCtrl::onImageLoaded(bool success,
                                           LLViewerFetchedTexture* src_vi,
                                           LLImageRaw* src,
                                           LLImageRaw* aux_src,
                                           S32 discard_level,
-                                          BOOL final,
+                                          bool final,
                                           void* userdata)
 {
     if (!userdata) return;
@@ -196,19 +196,19 @@ LLFloaterProfileTexture::~LLFloaterProfileTexture()
 }
 
 // virtual
-BOOL LLFloaterProfileTexture::postBuild()
+bool LLFloaterProfileTexture::postBuild()
 {
     mProfileIcon = getChild<LLProfileImageCtrl>("profile_pic");
-    mProfileIcon->setImageLoadedCallback([this](BOOL success, LLViewerFetchedTexture* imagep) {onImageLoaded(success, imagep); });
+    mProfileIcon->setImageLoadedCallback([this](bool success, LLViewerFetchedTexture* imagep) {onImageLoaded(success, imagep); });
 
     mCloseButton = getChild<LLButton>("close_btn");
     mCloseButton->setCommitCallback([this](LLUICtrl*, void*) { closeFloater(); }, nullptr);
 
-    return TRUE;
+    return true;
 }
 
 // virtual
-void LLFloaterProfileTexture::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLFloaterProfileTexture::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLFloater::reshape(width, height, called_from_parent);
 }
@@ -251,7 +251,7 @@ void LLFloaterProfileTexture::updateDimensions()
     //reshape floater
     reshape(width, height);
 
-    gFloaterView->adjustToFitScreen(this, FALSE);
+    gFloaterView->adjustToFitScreen(this, false);
 }
 
 void LLFloaterProfileTexture::draw()
@@ -279,7 +279,7 @@ void LLFloaterProfileTexture::loadAsset(const LLUUID &image_id)
     updateDimensions();
 }
 
-void LLFloaterProfileTexture::onImageLoaded(BOOL success, LLViewerFetchedTexture* imagep)
+void LLFloaterProfileTexture::onImageLoaded(bool success, LLViewerFetchedTexture* imagep)
 {
     if (success)
     {
diff --git a/indra/newview/llfloaterprofiletexture.h b/indra/newview/llfloaterprofiletexture.h
index 12efbab572..cdb1b92ba9 100644
--- a/indra/newview/llfloaterprofiletexture.h
+++ b/indra/newview/llfloaterprofiletexture.h
@@ -1,25 +1,25 @@
-/** 
+/**
  * @file llfloaterprofiletexture.h
  * @brief LLFloaterProfileTexture class definition
  *
  * $LicenseInfo:firstyear=2022&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2022, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -54,12 +54,12 @@ public:
     boost::signals2::connection setImageLoadedCallback(const image_loaded_signal_t::slot_type& cb);
 private:
     void onImageLoaded(bool success, LLViewerFetchedTexture* src_vi);
-    static void onImageLoaded(BOOL success,
+    static void onImageLoaded(bool success,
                               LLViewerFetchedTexture* src_vi,
                               LLImageRaw* src,
                               LLImageRaw* aux_src,
                               S32 discard_level,
-                              BOOL final,
+                              bool final,
                               void* userdata);
     void releaseTexture();
 
@@ -85,13 +85,13 @@ public:
     void resetAsset();
     void loadAsset(const LLUUID &image_id);
 
-    void onImageLoaded(BOOL success, LLViewerFetchedTexture* imagep);
+    void onImageLoaded(bool success, LLViewerFetchedTexture* imagep);
 
-    void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE) override;
+    void reshape(S32 width, S32 height, bool called_from_parent = true) override;
 
     LLHandle<LLFloater> getHandle() const { return LLFloater::getHandle(); }
 protected:
-    BOOL postBuild() override;
+    bool postBuild() override;
 
 private:
     void updateDimensions();
diff --git a/indra/newview/llfloaterregiondebugconsole.cpp b/indra/newview/llfloaterregiondebugconsole.cpp
index afcd07f1ec..26647333dc 100644
--- a/indra/newview/llfloaterregiondebugconsole.cpp
+++ b/indra/newview/llfloaterregiondebugconsole.cpp
@@ -106,7 +106,7 @@ LLFloaterRegionDebugConsole::~LLFloaterRegionDebugConsole()
     mReplySignalConnection.disconnect();
 }
 
-BOOL LLFloaterRegionDebugConsole::postBuild()
+bool LLFloaterRegionDebugConsole::postBuild()
 {
     LLLineEditor* input = getChild<LLLineEditor>("region_debug_console_input");
     input->setEnableLineHistory(true);
@@ -126,12 +126,12 @@ BOOL LLFloaterRegionDebugConsole::postBuild()
             mOutput->appendText(
                 CONSOLE_NOT_SUPPORTED + PROMPT,
                 false);
-            return TRUE;
+            return true;
         }
     }
 
     mOutput->appendText("> ", false);
-    return TRUE;
+    return true;
 }
 
 void LLFloaterRegionDebugConsole::onInput(LLUICtrl* ctrl, const LLSD& param)
diff --git a/indra/newview/llfloaterregiondebugconsole.h b/indra/newview/llfloaterregiondebugconsole.h
index e7dc0f3a5f..a26cf1a30f 100644
--- a/indra/newview/llfloaterregiondebugconsole.h
+++ b/indra/newview/llfloaterregiondebugconsole.h
@@ -43,8 +43,7 @@ public:
     LLFloaterRegionDebugConsole(LLSD const & key);
     virtual ~LLFloaterRegionDebugConsole();
 
-    // virtual
-    BOOL postBuild();
+    bool postBuild() override;
 
     void onInput(LLUICtrl* ctrl, const LLSD& param);
 
diff --git a/indra/newview/llfloaterregioninfo.cpp b/indra/newview/llfloaterregioninfo.cpp
index 0a66b7d037..6d30cb1f95 100644
--- a/indra/newview/llfloaterregioninfo.cpp
+++ b/indra/newview/llfloaterregioninfo.cpp
@@ -68,6 +68,7 @@
 #include "llnamelistctrl.h"
 #include "llnotifications.h"
 #include "llnotificationsutil.h"
+#include "llpbrterrainfeatures.h"
 #include "llregioninfomodel.h"
 #include "llscrolllistitem.h"
 #include "llsliderctrl.h"
@@ -195,7 +196,7 @@ public:
 
     bool                refreshFromRegion(LLViewerRegion* region);
 
-    virtual BOOL        postBuild() override;
+    virtual bool        postBuild() override;
     virtual void        onOpen(const LLSD& key) override {};
 
     virtual S32         getParcelId() override { return INVALID_PARCEL_ID; }
@@ -233,7 +234,7 @@ LLFloaterRegionInfo::LLFloaterRegionInfo(const LLSD& seed)
     mRegionChangedCallback()
 {}
 
-BOOL LLFloaterRegionInfo::postBuild()
+bool LLFloaterRegionInfo::postBuild()
 {
     mTab = getChild<LLTabContainer>("region_panels");
     mTab->setCommitCallback(boost::bind(&LLFloaterRegionInfo::onTabSelected, this, _2));
@@ -263,7 +264,16 @@ BOOL LLFloaterRegionInfo::postBuild()
 
     panel = new LLPanelRegionTerrainInfo;
     mInfoPanels.push_back(panel);
-    panel->buildFromFile("panel_region_terrain.xml");
+    static LLCachedControl<bool> feature_pbr_terrain_enabled(gSavedSettings, "RenderTerrainPBREnabled", false);
+    static LLCachedControl<bool> feature_pbr_terrain_transforms_enabled(gSavedSettings, "RenderTerrainPBRTransformsEnabled", false);
+    if (!feature_pbr_terrain_transforms_enabled || !feature_pbr_terrain_enabled)
+    {
+        panel->buildFromFile("panel_region_terrain.xml");
+    }
+    else
+    {
+        panel->buildFromFile("panel_region_terrain_texture_transform.xml");
+    }
     mTab->addTabPanel(panel);
 
     mEnvironmentPanel = new LLPanelRegionEnvironment;
@@ -278,7 +288,7 @@ BOOL LLFloaterRegionInfo::postBuild()
 
     if(gDisconnected)
     {
-        return TRUE;
+        return true;
     }
 
     if(!gAgent.getRegionCapability("RegionExperiences").empty())
@@ -296,7 +306,7 @@ BOOL LLFloaterRegionInfo::postBuild()
     // Request region info when agent region changes.
     mRegionChangedCallback = gAgent.addRegionChangedCallback(boost::bind(&LLFloaterRegionInfo::onRegionChanged, this));
 
-    return TRUE;
+    return true;
 }
 
 LLFloaterRegionInfo::~LLFloaterRegionInfo()
@@ -344,11 +354,11 @@ void LLFloaterRegionInfo::requestRegionInfo()
     LLTabContainer* tab = findChild<LLTabContainer>("region_panels");
     if (tab)
     {
-        tab->getChild<LLPanel>("General")->setCtrlsEnabled(FALSE);
-        tab->getChild<LLPanel>("Debug")->setCtrlsEnabled(FALSE);
-        tab->getChild<LLPanel>("Terrain")->setCtrlsEnabled(FALSE);
-        tab->getChild<LLPanel>("Estate")->setCtrlsEnabled(FALSE);
-        tab->getChild<LLPanel>("Access")->setCtrlsEnabled(FALSE);
+        tab->getChild<LLPanel>("General")->setCtrlsEnabled(false);
+        tab->getChild<LLPanel>("Debug")->setCtrlsEnabled(false);
+        tab->getChild<LLPanel>("Terrain")->setAllChildrenEnabled(false, true);
+        tab->getChild<LLPanel>("Estate")->setCtrlsEnabled(false);
+        tab->getChild<LLPanel>("Access")->setCtrlsEnabled(false);
     }
 
     // Must allow anyone to request the RegionInfo data
@@ -419,7 +429,7 @@ void LLFloaterRegionInfo::processRegionInfo(LLMessageSystem* msg)
     LLTabContainer* tab = floater->getChild<LLTabContainer>("region_panels");
 
     LLViewerRegion* region = gAgent.getRegion();
-    BOOL allow_modify = gAgent.isGodlike() || (region && region->canManageEstate());
+    bool allow_modify = gAgent.isGodlike() || (region && region->canManageEstate());
 
     // *TODO: Replace parsing msg with accessing the region info model.
     LLRegionInfoModel& region_info = LLRegionInfoModel::instance();
@@ -435,7 +445,7 @@ void LLFloaterRegionInfo::processRegionInfo(LLMessageSystem* msg)
     F32 water_height;
     F32 terrain_raise_limit;
     F32 terrain_lower_limit;
-    BOOL use_estate_sun;
+    bool use_estate_sun;
     F32 sun_hour;
     msg->getString("RegionInfo", "SimName", sim_name);
     msg->getU8("RegionInfo", "MaxAgents", agent_limit);
@@ -497,17 +507,17 @@ void LLFloaterRegionInfo::processRegionInfo(LLMessageSystem* msg)
     panel->getChild<LLUICtrl>("region_type")->setValue(LLSD(sim_type));
     panel->getChild<LLUICtrl>("version_channel_text")->setValue(gLastVersionChannel);
 
-    panel->getChild<LLUICtrl>("block_terraform_check")->setValue((region_flags & REGION_FLAGS_BLOCK_TERRAFORM) ? TRUE : FALSE );
-    panel->getChild<LLUICtrl>("block_fly_check")->setValue((region_flags & REGION_FLAGS_BLOCK_FLY) ? TRUE : FALSE );
-    panel->getChild<LLUICtrl>("block_fly_over_check")->setValue((region_flags & REGION_FLAGS_BLOCK_FLYOVER) ? TRUE : FALSE );
-    panel->getChild<LLUICtrl>("allow_damage_check")->setValue((region_flags & REGION_FLAGS_ALLOW_DAMAGE) ? TRUE : FALSE );
-    panel->getChild<LLUICtrl>("restrict_pushobject")->setValue((region_flags & REGION_FLAGS_RESTRICT_PUSHOBJECT) ? TRUE : FALSE );
-    panel->getChild<LLUICtrl>("allow_land_resell_check")->setValue((region_flags & REGION_FLAGS_BLOCK_LAND_RESELL) ? FALSE : TRUE );
-    panel->getChild<LLUICtrl>("allow_parcel_changes_check")->setValue((region_flags & REGION_FLAGS_ALLOW_PARCEL_CHANGES) ? TRUE : FALSE );
-    panel->getChild<LLUICtrl>("block_parcel_search_check")->setValue((region_flags & REGION_FLAGS_BLOCK_PARCEL_SEARCH) ? TRUE : FALSE );
-    panel->getChild<LLUICtrl>("agent_limit_spin")->setValue(LLSD((F32)agent_limit) );
-    panel->getChild<LLUICtrl>("object_bonus_spin")->setValue(LLSD(object_bonus_factor) );
-    panel->getChild<LLUICtrl>("access_combo")->setValue(LLSD(sim_access) );
+    panel->getChild<LLUICtrl>("block_terraform_check")->setValue(is_flag_set(region_flags, REGION_FLAGS_BLOCK_TERRAFORM));
+    panel->getChild<LLUICtrl>("block_fly_check")->setValue(is_flag_set(region_flags, REGION_FLAGS_BLOCK_FLY));
+    panel->getChild<LLUICtrl>("block_fly_over_check")->setValue(is_flag_set(region_flags, REGION_FLAGS_BLOCK_FLYOVER));
+    panel->getChild<LLUICtrl>("allow_damage_check")->setValue(is_flag_set(region_flags, REGION_FLAGS_ALLOW_DAMAGE));
+    panel->getChild<LLUICtrl>("restrict_pushobject")->setValue(is_flag_set(region_flags, REGION_FLAGS_RESTRICT_PUSHOBJECT));
+    panel->getChild<LLUICtrl>("allow_land_resell_check")->setValue(!is_flag_set(region_flags, REGION_FLAGS_BLOCK_LAND_RESELL));
+    panel->getChild<LLUICtrl>("allow_parcel_changes_check")->setValue(is_flag_set(region_flags, REGION_FLAGS_ALLOW_PARCEL_CHANGES));
+    panel->getChild<LLUICtrl>("block_parcel_search_check")->setValue(is_flag_set(region_flags, REGION_FLAGS_BLOCK_PARCEL_SEARCH));
+    panel->getChild<LLUICtrl>("agent_limit_spin")->setValue(LLSD((F32)agent_limit));
+    panel->getChild<LLUICtrl>("object_bonus_spin")->setValue(LLSD(object_bonus_factor));
+    panel->getChild<LLUICtrl>("access_combo")->setValue(LLSD(sim_access));
 
     panel->getChild<LLSpinCtrl>("agent_limit_spin")->setMaxValue(hard_agent_limit);
 
@@ -521,7 +531,7 @@ void LLFloaterRegionInfo::processRegionInfo(LLMessageSystem* msg)
 
     U32 parent_estate_id;
     msg->getU32("RegionInfo", "ParentEstateID", parent_estate_id);
-    BOOL teen_grid = (parent_estate_id == 5);  // *TODO add field to estate table and test that
+    bool teen_grid = (parent_estate_id == 5);  // *TODO add field to estate table and test that
     panel->getChildView("access_combo")->setEnabled(gAgent.isGodlike() || (region && region->canManageEstate() && !teen_grid));
     panel->setCtrlsEnabled(allow_modify);
 
@@ -530,9 +540,9 @@ void LLFloaterRegionInfo::processRegionInfo(LLMessageSystem* msg)
     panel = tab->getChild<LLPanel>("Debug");
 
     panel->getChild<LLUICtrl>("region_text")->setValue(LLSD(sim_name) );
-    panel->getChild<LLUICtrl>("disable_scripts_check")->setValue(LLSD((BOOL)((region_flags & REGION_FLAGS_SKIP_SCRIPTS) ? TRUE : FALSE )) );
-    panel->getChild<LLUICtrl>("disable_collisions_check")->setValue(LLSD((BOOL)((region_flags & REGION_FLAGS_SKIP_COLLISIONS) ? TRUE : FALSE )) );
-    panel->getChild<LLUICtrl>("disable_physics_check")->setValue(LLSD((BOOL)((region_flags & REGION_FLAGS_SKIP_PHYSICS) ? TRUE : FALSE )) );
+    panel->getChild<LLUICtrl>("disable_scripts_check")->setValue(LLSD((bool)(region_flags & REGION_FLAGS_SKIP_SCRIPTS)));
+    panel->getChild<LLUICtrl>("disable_collisions_check")->setValue(LLSD((bool)(region_flags & REGION_FLAGS_SKIP_COLLISIONS)));
+    panel->getChild<LLUICtrl>("disable_physics_check")->setValue(LLSD((bool)(region_flags & REGION_FLAGS_SKIP_PHYSICS)));
     panel->setCtrlsEnabled(allow_modify);
 
     // TERRAIN PANEL
@@ -543,7 +553,7 @@ void LLFloaterRegionInfo::processRegionInfo(LLMessageSystem* msg)
     panel->getChild<LLUICtrl>("terrain_raise_spin")->setValue(region_info.mTerrainRaiseLimit);
     panel->getChild<LLUICtrl>("terrain_lower_spin")->setValue(region_info.mTerrainLowerLimit);
 
-    panel->setCtrlsEnabled(allow_modify);
+    panel->setAllChildrenEnabled(allow_modify, true);
 
     if (floater->getVisible())
     {
@@ -554,6 +564,20 @@ void LLFloaterRegionInfo::processRegionInfo(LLMessageSystem* msg)
 }
 
 // static
+void LLFloaterRegionInfo::sRefreshFromRegion(LLViewerRegion* region)
+{
+    if (region != gAgent.getRegion()) { return; }
+
+    LLFloaterRegionInfo* floater = LLFloaterReg::getTypedInstance<LLFloaterRegionInfo>("region_info");
+    if (!floater) { return; }
+
+    if (floater->getVisible() && region == gAgent.getRegion())
+    {
+        floater->refreshFromRegion(region);
+    }
+}
+
+// static
 LLPanelEstateInfo* LLFloaterRegionInfo::getPanelEstate()
 {
     LLFloaterRegionInfo* floater = LLFloaterReg::getTypedInstance<LLFloaterRegionInfo>("region_info");
@@ -642,12 +666,12 @@ void LLFloaterRegionInfo::disableTabCtrls()
 {
     LLTabContainer* tab = getChild<LLTabContainer>("region_panels");
 
-    tab->getChild<LLPanel>("General")->setCtrlsEnabled(FALSE);
-    tab->getChild<LLPanel>("Debug")->setCtrlsEnabled(FALSE);
-    tab->getChild<LLPanel>("Terrain")->setCtrlsEnabled(FALSE);
-    tab->getChild<LLPanel>("panel_env_info")->setCtrlsEnabled(FALSE);
-    tab->getChild<LLPanel>("Estate")->setCtrlsEnabled(FALSE);
-    tab->getChild<LLPanel>("Access")->setCtrlsEnabled(FALSE);
+    tab->getChild<LLPanel>("General")->setCtrlsEnabled(false);
+    tab->getChild<LLPanel>("Debug")->setCtrlsEnabled(false);
+    tab->getChild<LLPanel>("Terrain")->setAllChildrenEnabled(false, true);
+    tab->getChild<LLPanel>("panel_env_info")->setCtrlsEnabled(false);
+    tab->getChild<LLPanel>("Estate")->setCtrlsEnabled(false);
+    tab->getChild<LLPanel>("Access")->setCtrlsEnabled(false);
 }
 
 void LLFloaterRegionInfo::onTabSelected(const LLSD& param)
@@ -750,7 +774,7 @@ void LLPanelRegionInfo::onChangeText(LLLineEditor* caller, void* user_data)
 
 
 // virtual
-BOOL LLPanelRegionInfo::postBuild()
+bool LLPanelRegionInfo::postBuild()
 {
     // If the panel has an Apply button, set a callback for it.
     LLUICtrl* apply_btn = findChild<LLUICtrl>("apply_btn");
@@ -760,7 +784,7 @@ BOOL LLPanelRegionInfo::postBuild()
     }
 
     refresh();
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -808,7 +832,7 @@ void LLPanelRegionInfo::sendEstateOwnerMessage(
     msg->sendReliable(mHost);
 }
 
-void LLPanelRegionInfo::enableButton(const std::string& btn_name, BOOL enable)
+void LLPanelRegionInfo::enableButton(const std::string& btn_name, bool enable)
 {
     LLView* button = findChildView(btn_name);
     if (button) button->setEnabled(enable);
@@ -817,7 +841,7 @@ void LLPanelRegionInfo::enableButton(const std::string& btn_name, BOOL enable)
 void LLPanelRegionInfo::disableButton(const std::string& btn_name)
 {
     LLView* button = findChildView(btn_name);
-    if (button) button->setEnabled(FALSE);
+    if (button) button->setEnabled(false);
 }
 
 void LLPanelRegionInfo::initCtrl(const std::string& name)
@@ -825,6 +849,13 @@ void LLPanelRegionInfo::initCtrl(const std::string& name)
     getChild<LLUICtrl>(name)->setCommitCallback(boost::bind(&LLPanelRegionInfo::onChangeAnything, this));
 }
 
+template<typename CTRL>
+void LLPanelRegionInfo::initAndSetCtrl(CTRL*& ctrl, const std::string& name)
+{
+    initCtrl(name);
+    ctrl = findChild<CTRL>(name);
+}
+
 void LLPanelRegionInfo::onClickManageTelehub()
 {
     LLFloaterReg::hideInstance("region_info");
@@ -836,9 +867,9 @@ void LLPanelRegionInfo::onClickManageTelehub()
 //
 bool LLPanelRegionGeneralInfo::refreshFromRegion(LLViewerRegion* region)
 {
-    BOOL allow_modify = gAgent.isGodlike() || (region && region->canManageEstate());
+    bool allow_modify = gAgent.isGodlike() || (region && region->canManageEstate());
     setCtrlsEnabled(allow_modify);
-    getChildView("apply_btn")->setEnabled(FALSE);
+    getChildView("apply_btn")->setEnabled(false);
     getChildView("access_text")->setEnabled(allow_modify);
     // getChildView("access_combo")->setEnabled(allow_modify);
     // now set in processRegionInfo for teen grid detection
@@ -852,7 +883,7 @@ bool LLPanelRegionGeneralInfo::refreshFromRegion(LLViewerRegion* region)
     return LLPanelRegionInfo::refreshFromRegion(region);
 }
 
-BOOL LLPanelRegionGeneralInfo::postBuild()
+bool LLPanelRegionGeneralInfo::postBuild()
 {
     // Enable the "Apply" button if something is changed. JC
     initCtrl("block_terraform_check");
@@ -879,7 +910,7 @@ BOOL LLPanelRegionGeneralInfo::postBuild()
     }
 
     refresh();
-    return TRUE;
+    return true;
 }
 
 void LLPanelRegionGeneralInfo::onBtnSet()
@@ -919,7 +950,7 @@ void LLPanelRegionGeneralInfo::onClickKick()
     LLView * button = findChild<LLButton>("kick_btn");
     LLFloater* parent_floater = gFloaterView->getParentFloater(this);
     LLFloater* child_floater = LLFloaterAvatarPicker::show(boost::bind(&LLPanelRegionGeneralInfo::onKickCommit, this, _1),
-                                                                                FALSE, TRUE, FALSE, parent_floater->getName(), button);
+                                                                                false, true, false, parent_floater->getName(), button);
     if (child_floater)
     {
         parent_floater->addDependentFloater(child_floater);
@@ -1024,7 +1055,7 @@ bool LLPanelRegionGeneralInfo::onMessageCommit(const LLSD& notification, const L
 // strings[7] = restrict pushobject
 // strings[8] = 'Y' - allow parcel subdivide, 'N' - not
 // strings[9] = 'Y' - block parcel search, 'N' - allow
-BOOL LLPanelRegionGeneralInfo::sendUpdate()
+bool LLPanelRegionGeneralInfo::sendUpdate()
 {
     LL_INFOS() << "LLPanelRegionGeneralInfo::sendUpdate()" << LL_ENDL;
 
@@ -1093,13 +1124,13 @@ BOOL LLPanelRegionGeneralInfo::sendUpdate()
         LLNotificationsUtil::add("RegionMaturityChange");
     }
 
-    return TRUE;
+    return true;
 }
 
 /////////////////////////////////////////////////////////////////////////////
 // LLPanelRegionDebugInfo
 /////////////////////////////////////////////////////////////////////////////
-BOOL LLPanelRegionDebugInfo::postBuild()
+bool LLPanelRegionDebugInfo::postBuild()
 {
     LLPanelRegionInfo::postBuild();
     initCtrl("disable_scripts_check");
@@ -1114,16 +1145,16 @@ BOOL LLPanelRegionDebugInfo::postBuild()
     childSetAction("cancel_restart_btn", onClickCancelRestart, this);
     childSetAction("region_debug_console_btn", onClickDebugConsole, this);
 
-    return TRUE;
+    return true;
 }
 
 // virtual
 bool LLPanelRegionDebugInfo::refreshFromRegion(LLViewerRegion* region)
 {
-    BOOL allow_modify = gAgent.isGodlike() || (region && region->canManageEstate());
+    bool allow_modify = gAgent.isGodlike() || (region && region->canManageEstate());
     setCtrlsEnabled(allow_modify);
-    getChildView("apply_btn")->setEnabled(FALSE);
-    getChildView("target_avatar_name")->setEnabled(FALSE);
+    getChildView("apply_btn")->setEnabled(false);
+    getChildView("target_avatar_name")->setEnabled(false);
 
     getChildView("choose_avatar_btn")->setEnabled(allow_modify);
     getChildView("return_scripts")->setEnabled(allow_modify && !mTargetAvatar.isNull());
@@ -1140,7 +1171,7 @@ bool LLPanelRegionDebugInfo::refreshFromRegion(LLViewerRegion* region)
 }
 
 // virtual
-BOOL LLPanelRegionDebugInfo::sendUpdate()
+bool LLPanelRegionDebugInfo::sendUpdate()
 {
     LL_INFOS() << "LLPanelRegionDebugInfo::sendUpdate" << LL_ENDL;
     strings_t strings;
@@ -1157,7 +1188,7 @@ BOOL LLPanelRegionDebugInfo::sendUpdate()
 
     LLUUID invoice(LLFloaterRegionInfo::getLastInvoice());
     sendEstateOwnerMessage(gMessageSystem, "setregiondebug", invoice, strings);
-    return TRUE;
+    return true;
 }
 
 void LLPanelRegionDebugInfo::onClickChooseAvatar()
@@ -1165,7 +1196,7 @@ void LLPanelRegionDebugInfo::onClickChooseAvatar()
     LLView * button = findChild<LLButton>("choose_avatar_btn");
     LLFloater* parent_floater = gFloaterView->getParentFloater(this);
     LLFloater * child_floater = LLFloaterAvatarPicker::show(boost::bind(&LLPanelRegionDebugInfo::callbackAvatarID, this, _1, _2),
-                                                                                    FALSE, TRUE, FALSE, parent_floater->getName(), button);
+                                                                                    false, true, false, parent_floater->getName(), button);
     if (child_floater)
     {
         parent_floater->addDependentFloater(child_floater);
@@ -1468,7 +1499,7 @@ bool LLPanelRegionTerrainInfo::validateMaterials()
     return valid;
 }
 
-BOOL LLPanelRegionTerrainInfo::validateTextureHeights()
+bool LLPanelRegionTerrainInfo::validateTextureHeights()
 {
     for (S32 i = 0; i < CORNER_COUNT; ++i)
     {
@@ -1477,11 +1508,11 @@ BOOL LLPanelRegionTerrainInfo::validateTextureHeights()
 
         if (getChild<LLUICtrl>(low)->getValue().asReal() > getChild<LLUICtrl>(high)->getValue().asReal())
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 /////////////////////////////////////////////////////////////////////////////
@@ -1494,17 +1525,23 @@ LLPanelRegionTerrainInfo::LLPanelRegionTerrainInfo()
     const LLUUID (&default_textures)[LLVLComposition::ASSET_COUNT] = LLVLComposition::getDefaultTextures();
     for (S32 i = 0; i < LLTerrainMaterials::ASSET_COUNT; ++i)
     {
+        mTextureDetailCtrl[i] = nullptr;
+        mMaterialDetailCtrl[i] = nullptr;
+
         mLastSetTextures[i] = default_textures[i];
-    }
-    for (S32 i = 0; i < LLTerrainMaterials::ASSET_COUNT; ++i)
-    {
         mLastSetMaterials[i] = BLANK_MATERIAL_ASSET_ID;
+
+        mMaterialScaleUCtrl[i] = nullptr;
+        mMaterialScaleVCtrl[i] = nullptr;
+        mMaterialRotationCtrl[i] = nullptr;
+        mMaterialOffsetUCtrl[i] = nullptr;
+        mMaterialOffsetVCtrl[i] = nullptr;
     }
 }
 
 // Initialize statics
 
-BOOL LLPanelRegionTerrainInfo::postBuild()
+bool LLPanelRegionTerrainInfo::postBuild()
 {
     LLPanelRegionInfo::postBuild();
 
@@ -1519,15 +1556,18 @@ BOOL LLPanelRegionTerrainInfo::postBuild()
 
     for(S32 i = 0; i < LLTerrainMaterials::ASSET_COUNT; ++i)
     {
-        buffer = llformat("texture_detail_%d", i);
-        initCtrl(buffer);
-        mTextureDetailCtrl[i] = findChild<LLTextureCtrl>(buffer);
-    }
-    for(S32 i = 0; i < LLTerrainMaterials::ASSET_COUNT; ++i)
-    {
-        buffer = llformat("material_detail_%d", i);
-        initCtrl(buffer);
-        mMaterialDetailCtrl[i] = findChild<LLTextureCtrl>(buffer);
+        initAndSetCtrl(mTextureDetailCtrl[i], llformat("texture_detail_%d", i));
+        if (mTextureDetailCtrl[i])
+        {
+            mTextureDetailCtrl[i]->setBakeTextureEnabled(false);
+        }
+        initAndSetCtrl(mMaterialDetailCtrl[i], llformat("material_detail_%d", i));
+
+        initAndSetCtrl(mMaterialScaleUCtrl[i], llformat("terrain%dScaleU", i));
+        initAndSetCtrl(mMaterialScaleVCtrl[i], llformat("terrain%dScaleV", i));
+        initAndSetCtrl(mMaterialRotationCtrl[i], llformat("terrain%dRotation", i));
+        initAndSetCtrl(mMaterialOffsetUCtrl[i], llformat("terrain%dOffsetU", i));
+        initAndSetCtrl(mMaterialOffsetVCtrl[i], llformat("terrain%dOffsetV", i));
     }
 
     for(S32 i = 0; i < CORNER_COUNT; ++i)
@@ -1579,6 +1619,17 @@ void LLPanelRegionTerrainInfo::updateForMaterialType()
         }
     }
 
+    // Toggle visibility of terrain tabs
+    LLTabContainer* terrain_tabs = findChild<LLTabContainer>("terrain_tabs");
+    if (terrain_tabs)
+    {
+        LLPanel* pbr_terrain_repeats_tab = findChild<LLPanel>("terrain_transform_panel");
+        if (pbr_terrain_repeats_tab)
+        {
+            terrain_tabs->setTabVisibility(pbr_terrain_repeats_tab, show_material_controls);
+        }
+    }
+
     // Toggle visibility of labels
     LLUICtrl* texture_label = findChild<LLUICtrl>("detail_texture_text");
     if (texture_label) { texture_label->setVisible(show_texture_controls); }
@@ -1602,13 +1653,13 @@ void LLPanelRegionTerrainInfo::updateForMaterialType()
 // virtual
 bool LLPanelRegionTerrainInfo::refreshFromRegion(LLViewerRegion* region)
 {
-    BOOL owner_or_god = gAgent.isGodlike()
+    bool owner_or_god = gAgent.isGodlike()
                         || (region && (region->getOwner() == gAgent.getID()));
-    BOOL owner_or_god_or_manager = owner_or_god
+    bool owner_or_god_or_manager = owner_or_god
                         || (region && region->isEstateManager());
-    setCtrlsEnabled(owner_or_god_or_manager);
+    setAllChildrenEnabled(owner_or_god_or_manager, true);
 
-    getChildView("apply_btn")->setEnabled(FALSE);
+    getChildView("apply_btn")->setEnabled(false);
 
     if (region)
     {
@@ -1618,8 +1669,8 @@ bool LLPanelRegionTerrainInfo::refreshFromRegion(LLViewerRegion* region)
 
         static LLCachedControl<bool> feature_pbr_terrain_enabled(gSavedSettings, "RenderTerrainPBREnabled", false);
 
-        const bool textures_ready = compp->texturesReady(false, false);
-        const bool materials_ready = feature_pbr_terrain_enabled && compp->materialsReady(false, false);
+        const bool textures_ready = compp->makeTexturesReady(false, false);
+        const bool materials_ready = feature_pbr_terrain_enabled && compp->makeMaterialsReady(false, false);
 
         bool set_texture_swatches;
         bool set_material_swatches;
@@ -1707,6 +1758,21 @@ bool LLPanelRegionTerrainInfo::refreshFromRegion(LLViewerRegion* region)
             }
         }
 
+        for(S32 i = 0; i < LLTerrainMaterials::ASSET_COUNT; ++i)
+        {
+            if (!mMaterialScaleUCtrl[i] || !mMaterialScaleVCtrl[i] || !mMaterialRotationCtrl[i] || !mMaterialOffsetUCtrl[i] || !mMaterialOffsetVCtrl[i]) { continue; }
+            const LLGLTFMaterial* mat_override = compp->getMaterialOverride(i);
+            if (!mat_override) { mat_override = &LLGLTFMaterial::sDefault; }
+
+            // Assume all texture transforms have the same value
+            const LLGLTFMaterial::TextureTransform& transform = mat_override->mTextureTransform[LLGLTFMaterial::GLTF_TEXTURE_INFO_BASE_COLOR];
+            mMaterialScaleUCtrl[i]->setValue(transform.mScale.mV[VX]);
+            mMaterialScaleVCtrl[i]->setValue(transform.mScale.mV[VY]);
+            mMaterialRotationCtrl[i]->setValue(transform.mRotation * RAD_TO_DEG);
+            mMaterialOffsetUCtrl[i]->setValue(transform.mOffset.mV[VX]);
+            mMaterialOffsetVCtrl[i]->setValue(transform.mOffset.mV[VY]);
+        }
+
         std::string buffer;
         for(S32 i = 0; i < CORNER_COUNT; ++i)
         {
@@ -1734,20 +1800,27 @@ bool LLPanelRegionTerrainInfo::refreshFromRegion(LLViewerRegion* region)
 
 
 // virtual
-BOOL LLPanelRegionTerrainInfo::sendUpdate()
+bool LLPanelRegionTerrainInfo::sendUpdate()
 {
-    LL_INFOS() << "LLPanelRegionTerrainInfo::sendUpdate" << LL_ENDL;
+    LL_INFOS() << __FUNCTION__ << LL_ENDL;
+
+    LLUICtrl* apply_btn = getChild<LLUICtrl>("apply_btn");
+    if (apply_btn && !apply_btn->getEnabled())
+    {
+        LL_WARNS() << "Duplicate update, ignored" << LL_ENDL;
+        return false;
+    }
 
     // Make sure user hasn't chosen wacky textures.
     if (!validateTextureSizes())
     {
-        return FALSE;
+        return false;
     }
 
     // Prevent applying unsupported alpha blend/double-sided materials
     if (!validateMaterials())
     {
-        return FALSE;
+        return false;
     }
 
     // Check if terrain Elevation Ranges are correct
@@ -1757,11 +1830,11 @@ BOOL LLPanelRegionTerrainInfo::sendUpdate()
         {
             LLNotificationsUtil::add("ConfirmTextureHeights", LLSD(), LLSD(), boost::bind(&LLPanelRegionTerrainInfo::callbackTextureHeights, this, _1, _2));
             mAskedTextureHeights = true;
-            return FALSE;
+            return false;
         }
         else if (!mConfirmedTextureHeights)
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -1837,7 +1910,52 @@ BOOL LLPanelRegionTerrainInfo::sendUpdate()
 
     sendEstateOwnerMessage(msg, "texturecommit", invoice, strings);
 
-    return TRUE;
+    // ========================================
+    // POST to ModifyRegion endpoint, if enabled
+
+    static LLCachedControl<bool> feature_pbr_terrain_transforms_enabled(gSavedSettings, "RenderTerrainPBRTransformsEnabled", false);
+    if (material_type == LLTerrainMaterials::Type::PBR && feature_pbr_terrain_transforms_enabled)
+    {
+        LLTerrainMaterials composition;
+        for (S32 i = 0; i < LLTerrainMaterials::ASSET_COUNT; ++i)
+        {
+            LLPointer<LLGLTFMaterial> mat_override = new LLGLTFMaterial();
+
+            const bool transform_controls_valid = mMaterialScaleUCtrl[i] && mMaterialScaleVCtrl[i] && mMaterialRotationCtrl[i] && mMaterialOffsetUCtrl[i] && mMaterialOffsetVCtrl[i];
+            if (transform_controls_valid)
+            {
+                // Set texture transforms for all texture infos to the same value,
+                // because the PBR terrain shader doesn't currently support
+                // different transforms per texture info. See also
+                // LLDrawPoolTerrain::renderFullShaderPBR .
+                for (U32 tt = 0; tt < LLGLTFMaterial::GLTF_TEXTURE_INFO_COUNT; ++tt)
+                {
+                    LLGLTFMaterial::TextureTransform& transform = mat_override->mTextureTransform[tt];
+                    transform.mScale.mV[VX] = mMaterialScaleUCtrl[i]->getValue().asReal();
+                    transform.mScale.mV[VY] = mMaterialScaleVCtrl[i]->getValue().asReal();
+                    transform.mRotation = mMaterialRotationCtrl[i]->getValue().asReal() * DEG_TO_RAD;
+                    transform.mOffset.mV[VX] = mMaterialOffsetUCtrl[i]->getValue().asReal();
+                    transform.mOffset.mV[VY] = mMaterialOffsetVCtrl[i]->getValue().asReal();
+                }
+            }
+
+            if (*mat_override == LLGLTFMaterial::sDefault) { mat_override = nullptr; }
+            composition.setMaterialOverride(i, mat_override.get());
+        }
+
+        // queueModify leads to a few messages being sent back and forth:
+        //   viewer: POST ModifyRegion
+        //   simulator: RegionHandshake
+        //   viewer: GET ModifyRegion
+        LLViewerRegion* region = gAgent.getRegion();
+        llassert(region);
+        if (region)
+        {
+            LLPBRTerrainFeatures::queueModify(*region, composition);
+        }
+    }
+
+    return true;
 }
 
 bool LLPanelRegionTerrainInfo::callbackTextureHeights(const LLSD& notification, const LLSD& response)
@@ -1853,7 +1971,7 @@ bool LLPanelRegionTerrainInfo::callbackTextureHeights(const LLSD& notification,
     }
     else if (option == 2) // don't ask
     {
-        gSavedSettings.setBOOL("RegionCheckTextureHeights", FALSE);
+        gSavedSettings.setBOOL("RegionCheckTextureHeights", false);
         mConfirmedTextureHeights = true;
     }
 
@@ -1968,7 +2086,7 @@ void LLPanelEstateInfo::onClickKickUser()
     LLView * button = findChild<LLButton>("kick_user_from_estate_btn");
     LLFloater* parent_floater = gFloaterView->getParentFloater(this);
     LLFloater* child_floater = LLFloaterAvatarPicker::show(boost::bind(&LLPanelEstateInfo::onKickUserCommit, this, _1),
-                                                                        FALSE, TRUE, FALSE, parent_floater->getName(), button);
+                                                                        false, true, false, parent_floater->getName(), button);
     if (child_floater)
     {
         parent_floater->addDependentFloater(child_floater);
@@ -2109,13 +2227,13 @@ void LLPanelEstateInfo::updateEstateName(const std::string& name)
 
 void LLPanelEstateInfo::updateControls(LLViewerRegion* region)
 {
-    BOOL god = gAgent.isGodlike();
-    BOOL owner = (region && (region->getOwner() == gAgent.getID()));
-    BOOL manager = (region && region->isEstateManager());
+    bool god = gAgent.isGodlike();
+    bool owner = (region && (region->getOwner() == gAgent.getID()));
+    bool manager = (region && region->isEstateManager());
     setCtrlsEnabled(god || owner || manager);
 
-    getChildView("apply_btn")->setEnabled(FALSE);
-    getChildView("estate_owner")->setEnabled(TRUE);
+    getChildView("apply_btn")->setEnabled(false);
+    getChildView("estate_owner")->setEnabled(true);
     getChildView("message_estate_btn")->setEnabled(god || owner || manager);
     getChildView("kick_user_from_estate_btn")->setEnabled(god || owner || manager);
 
@@ -2160,7 +2278,7 @@ bool LLPanelEstateInfo::estateUpdate(LLMessageSystem* msg)
 }
 
 
-BOOL LLPanelEstateInfo::postBuild()
+bool LLPanelEstateInfo::postBuild()
 {
     // set up the callbacks for the generic controls
     initCtrl("externally_visible_radio");
@@ -2176,7 +2294,7 @@ BOOL LLPanelEstateInfo::postBuild()
 
     getChild<LLUICtrl>("parcel_access_override")->setCommitCallback(boost::bind(&LLPanelEstateInfo::onChangeAccessOverride, this));
 
-    getChild<LLUICtrl>("externally_visible_radio")->setFocus(TRUE);
+    getChild<LLUICtrl>("externally_visible_radio")->setFocus(true);
 
     getChild<LLTextBox>("estate_owner")->setIsFriendCallback(LLAvatarActions::isFriend);
 
@@ -2194,7 +2312,7 @@ void LLPanelEstateInfo::refresh()
     getChildView("limit_bots")->setEnabled(public_access);
 
     // if this is set to false, then the limit fields are meaningless and should be turned off
-    if (public_access == false)
+    if (!public_access)
     {
         getChild<LLUICtrl>("limit_payment")->setValue(false);
         getChild<LLUICtrl>("limit_age_verified")->setValue(false);
@@ -2222,7 +2340,7 @@ void LLPanelEstateInfo::refreshFromEstate()
     refresh();
 }
 
-BOOL LLPanelEstateInfo::sendUpdate()
+bool LLPanelEstateInfo::sendUpdate()
 {
     LL_INFOS() << "LLPanelEsateInfo::sendUpdate()" << LL_ENDL;
 
@@ -2239,7 +2357,7 @@ BOOL LLPanelEstateInfo::sendUpdate()
         // for normal estates, just make the change
         LLNotifications::instance().forceResponse(params, 0);
     }
-    return TRUE;
+    return true;
 }
 
 bool LLPanelEstateInfo::callbackChangeLindenEstate(const LLSD& notification, const LLSD& response)
@@ -2426,7 +2544,7 @@ bool LLPanelEstateCovenant::estateUpdate(LLMessageSystem* msg)
 }
 
 // virtual
-BOOL LLPanelEstateCovenant::postBuild()
+bool LLPanelEstateCovenant::postBuild()
 {
     mEstateNameText = getChild<LLTextBox>("estate_name_text");
     mEstateOwnerText = getChild<LLTextBox>("estate_owner_text");
@@ -2446,7 +2564,7 @@ void LLPanelEstateCovenant::updateChild(LLUICtrl* child_ctrl)
 }
 
 // virtual
-BOOL LLPanelEstateCovenant::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLPanelEstateCovenant::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                   EDragAndDropType cargo_type,
                                   void* cargo_data,
                                   EAcceptance* accept,
@@ -2457,7 +2575,7 @@ BOOL LLPanelEstateCovenant::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop
     if (!gAgent.canManageEstate())
     {
         *accept = ACCEPT_NO;
-        return TRUE;
+        return true;
     }
 
     switch(cargo_type)
@@ -2477,7 +2595,7 @@ BOOL LLPanelEstateCovenant::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop
         break;
     }
 
-    return TRUE;
+    return true;
 }
 
 // static
@@ -2526,7 +2644,7 @@ bool LLPanelEstateCovenant::confirmResetCovenantCallback(const LLSD& notificatio
 
 void LLPanelEstateCovenant::loadInvItem(LLInventoryItem *itemp)
 {
-    const BOOL high_priority = TRUE;
+    const bool high_priority = true;
     if (itemp)
     {
         gAssetStorage->getInvItemAsset(gAgent.getRegionHost(),
@@ -2638,9 +2756,9 @@ void LLPanelEstateCovenant::sendChangeCovenantID(const LLUUID &asset_id)
 }
 
 // virtual
-BOOL LLPanelEstateCovenant::sendUpdate()
+bool LLPanelEstateCovenant::sendUpdate()
 {
-    return TRUE;
+    return true;
 }
 
 std::string LLPanelEstateCovenant::getEstateName() const
@@ -2807,13 +2925,13 @@ bool LLDispatchSetEstateExperience::operator()(
     return true;
 }
 
-BOOL LLPanelRegionExperiences::postBuild()
+bool LLPanelRegionExperiences::postBuild()
 {
     mAllowed = setupList("panel_allowed", ESTATE_EXPERIENCE_ALLOWED_ADD, ESTATE_EXPERIENCE_ALLOWED_REMOVE);
     mTrusted = setupList("panel_trusted", ESTATE_EXPERIENCE_TRUSTED_ADD, ESTATE_EXPERIENCE_TRUSTED_REMOVE);
     mBlocked = setupList("panel_blocked", ESTATE_EXPERIENCE_BLOCKED_ADD, ESTATE_EXPERIENCE_BLOCKED_REMOVE);
 
-    getChild<LLLayoutPanel>("trusted_layout_panel")->setVisible(TRUE);
+    getChild<LLLayoutPanel>("trusted_layout_panel")->setVisible(true);
     getChild<LLTextBox>("experiences_help_text")->setText(getString("estate_caption"));
     getChild<LLTextBox>("trusted_text_help")->setText(getString("trusted_estate_text"));
     getChild<LLTextBox>("allowed_text_help")->setText(getString("allowed_estate_text"));
@@ -2954,7 +3072,7 @@ std::string LLPanelRegionExperiences::regionCapabilityQuery(LLViewerRegion* regi
 
 bool LLPanelRegionExperiences::refreshFromRegion(LLViewerRegion* region)
 {
-    BOOL allow_modify = gAgent.isGodlike() || (region && region->canManageEstate());
+    bool allow_modify = gAgent.isGodlike() || (region && region->canManageEstate());
 
     mAllowed->loading();
     mAllowed->setReadonly(!allow_modify);
@@ -2993,7 +3111,7 @@ LLSD LLPanelRegionExperiences::addIds(LLPanelExperienceListEditor* panel)
 }
 
 
-BOOL LLPanelRegionExperiences::sendUpdate()
+bool LLPanelRegionExperiences::sendUpdate()
 {
     LLViewerRegion* region = gAgent.getRegion();
 
@@ -3006,7 +3124,7 @@ BOOL LLPanelRegionExperiences::sendUpdate()
     LLExperienceCache::instance().setRegionExperiences(boost::bind(&LLPanelRegionExperiences::regionCapabilityQuery, region, _1),
         content, boost::bind(&LLPanelRegionExperiences::infoCallback, getDerivedHandle<LLPanelRegionExperiences>(), _1));
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelRegionExperiences::itemChanged( U32 event_type, const LLUUID& id )
@@ -3071,13 +3189,13 @@ LLPanelEstateAccess::LLPanelEstateAccess()
 : LLPanelRegionInfo(), mPendingUpdate(false)
 {}
 
-BOOL LLPanelEstateAccess::postBuild()
+bool LLPanelEstateAccess::postBuild()
 {
     getChild<LLUICtrl>("allowed_avatar_name_list")->setCommitCallback(boost::bind(&LLPanelEstateInfo::onChangeChildCtrl, this, _1));
     LLNameListCtrl *avatar_name_list = getChild<LLNameListCtrl>("allowed_avatar_name_list");
     if (avatar_name_list)
     {
-        avatar_name_list->setCommitOnSelectionChange(TRUE);
+        avatar_name_list->setCommitOnSelectionChange(true);
         avatar_name_list->setMaxItemCount(ESTATE_MAX_ACCESS_IDS);
     }
 
@@ -3090,7 +3208,7 @@ BOOL LLPanelEstateAccess::postBuild()
     LLNameListCtrl* group_name_list = getChild<LLNameListCtrl>("allowed_group_name_list");
     if (group_name_list)
     {
-        group_name_list->setCommitOnSelectionChange(TRUE);
+        group_name_list->setCommitOnSelectionChange(true);
         group_name_list->setMaxItemCount(ESTATE_MAX_ACCESS_IDS);
     }
 
@@ -3103,7 +3221,7 @@ BOOL LLPanelEstateAccess::postBuild()
     LLNameListCtrl* banned_name_list = getChild<LLNameListCtrl>("banned_avatar_name_list");
     if (banned_name_list)
     {
-        banned_name_list->setCommitOnSelectionChange(TRUE);
+        banned_name_list->setCommitOnSelectionChange(true);
         banned_name_list->setMaxItemCount(ESTATE_MAX_BANNED_IDS);
     }
 
@@ -3116,36 +3234,41 @@ BOOL LLPanelEstateAccess::postBuild()
     LLNameListCtrl* manager_name_list = getChild<LLNameListCtrl>("estate_manager_name_list");
     if (manager_name_list)
     {
-        manager_name_list->setCommitOnSelectionChange(TRUE);
+        manager_name_list->setCommitOnSelectionChange(true);
         manager_name_list->setMaxItemCount(ESTATE_MAX_MANAGERS * 4);    // Allow extras for dupe issue
     }
 
     childSetAction("add_estate_manager_btn", boost::bind(&LLPanelEstateAccess::onClickAddEstateManager, this));
     childSetAction("remove_estate_manager_btn", boost::bind(&LLPanelEstateAccess::onClickRemoveEstateManager, this));
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelEstateAccess::updateControls(LLViewerRegion* region)
 {
-    BOOL god = gAgent.isGodlike();
-    BOOL owner = (region && (region->getOwner() == gAgent.getID()));
-    BOOL manager = (region && region->isEstateManager());
-    BOOL enable_cotrols = god || owner || manager;
+    bool god = gAgent.isGodlike();
+    bool owner = (region && (region->getOwner() == gAgent.getID()));
+    bool manager = (region && region->isEstateManager());
+    bool enable_cotrols = god || owner || manager;
     setCtrlsEnabled(enable_cotrols);
 
-    BOOL has_allowed_avatar = getChild<LLNameListCtrl>("allowed_avatar_name_list")->getFirstSelected() ? TRUE : FALSE;
-    BOOL has_allowed_group = getChild<LLNameListCtrl>("allowed_group_name_list")->getFirstSelected() ? TRUE : FALSE;
-    BOOL has_banned_agent = getChild<LLNameListCtrl>("banned_avatar_name_list")->getFirstSelected() ? TRUE : FALSE;
-    BOOL has_estate_manager = getChild<LLNameListCtrl>("estate_manager_name_list")->getFirstSelected() ? TRUE : FALSE;
+    LLNameListCtrl* allowedAvatars = getChild<LLNameListCtrl>("allowed_avatar_name_list");
+    LLNameListCtrl* allowedGroups = getChild<LLNameListCtrl>("allowed_group_name_list");
+    LLNameListCtrl* bannedAvatars = getChild<LLNameListCtrl>("banned_avatar_name_list");
+    LLNameListCtrl* estateManagers = getChild<LLNameListCtrl>("estate_manager_name_list");
+
+    bool has_allowed_avatar = allowedAvatars->getFirstSelected();
+    bool has_allowed_group = allowedGroups->getFirstSelected();
+    bool has_banned_agent = bannedAvatars->getFirstSelected();
+    bool has_estate_manager = estateManagers->getFirstSelected();
 
     getChildView("add_allowed_avatar_btn")->setEnabled(enable_cotrols);
     getChildView("remove_allowed_avatar_btn")->setEnabled(has_allowed_avatar && enable_cotrols);
-    getChildView("allowed_avatar_name_list")->setEnabled(enable_cotrols);
+    allowedAvatars->setEnabled(enable_cotrols);
 
     getChildView("add_allowed_group_btn")->setEnabled(enable_cotrols);
     getChildView("remove_allowed_group_btn")->setEnabled(has_allowed_group && enable_cotrols);
-    getChildView("allowed_group_name_list")->setEnabled(enable_cotrols);
+    allowedGroups->setEnabled(enable_cotrols);
 
     // Can't ban people from mainland, orientation islands, etc. because this
     // creates much network traffic and server load.
@@ -3154,12 +3277,12 @@ void LLPanelEstateAccess::updateControls(LLViewerRegion* region)
     bool enable_ban = enable_cotrols && !linden_estate;
     getChildView("add_banned_avatar_btn")->setEnabled(enable_ban);
     getChildView("remove_banned_avatar_btn")->setEnabled(has_banned_agent && enable_ban);
-    getChildView("banned_avatar_name_list")->setEnabled(enable_cotrols);
+    bannedAvatars->setEnabled(enable_cotrols);
 
     // estate managers can't add estate managers
     getChildView("add_estate_manager_btn")->setEnabled(god || owner);
     getChildView("remove_estate_manager_btn")->setEnabled(has_estate_manager && (god || owner));
-    getChildView("estate_manager_name_list")->setEnabled(god || owner);
+    estateManagers->setEnabled(god || owner);
 
     if (enable_cotrols != mCtrlsEnabled)
     {
@@ -3400,7 +3523,7 @@ bool LLPanelEstateAccess::accessAddCore2(const LLSD& notification, const LLSD& r
 
     // avatar picker yes multi-select, yes close-on-select
     LLFloater* child_floater = LLFloaterAvatarPicker::show(boost::bind(&LLPanelEstateAccess::accessAddCore3, _1, _2, (void*)change_info),
-        TRUE, TRUE, FALSE, parent_floater_name, button);
+        true, true, false, parent_floater_name, button);
 
     //Allows the closed parent floater to close the child floater (avatar picker)
     if (child_floater)
@@ -3866,7 +3989,7 @@ void LLPanelEstateAccess::requestEstateGetAccessCoro(std::string url)
             LLUUID id = (*it)["id"].asUUID();
             allowed_agent_name_list->addNameItem(id);
         }
-        allowed_agent_name_list->sortByName(TRUE);
+        allowed_agent_name_list->sortByName(true);
     }
 
     LLNameListCtrl* banned_agent_name_list = panel->getChild<LLNameListCtrl>("banned_avatar_name_list");
@@ -3909,7 +4032,7 @@ void LLPanelEstateAccess::requestEstateGetAccessCoro(std::string url)
 
             banned_agent_name_list->addElement(item);
         }
-        banned_agent_name_list->sortByName(TRUE);
+        banned_agent_name_list->sortByName(true);
     }
 
     LLNameListCtrl* allowed_group_name_list = panel->getChild<LLNameListCtrl>("allowed_group_name_list");
@@ -3928,7 +4051,7 @@ void LLPanelEstateAccess::requestEstateGetAccessCoro(std::string url)
             LLUUID id = (*it)["id"].asUUID();
             allowed_group_name_list->addGroupNameItem(id);
         }
-        allowed_group_name_list->sortByName(TRUE);
+        allowed_group_name_list->sortByName(true);
     }
 
     LLNameListCtrl* estate_manager_name_list = panel->getChild<LLNameListCtrl>("estate_manager_name_list");
@@ -3947,7 +4070,7 @@ void LLPanelEstateAccess::requestEstateGetAccessCoro(std::string url)
             LLUUID id = (*it)["agent_id"].asUUID();
             estate_manager_name_list->addNameItem(id);
         }
-        estate_manager_name_list->sortByName(TRUE);
+        estate_manager_name_list->sortByName(true);
     }
 
 
@@ -3992,7 +4115,7 @@ void LLPanelEstateAccess::searchAgent(LLNameListCtrl* listCtrl, const std::strin
     }
     else
     {
-        listCtrl->deselectAllItems(TRUE);
+        listCtrl->deselectAllItems(true);
     }
 }
 
@@ -4022,7 +4145,7 @@ void LLPanelEstateAccess::copyListToClipboard(std::string list_name)
         }
     }
 
-    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(list_to_copy), 0, list_to_copy.length());
+    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(list_to_copy), 0, static_cast<S32>(list_to_copy.length()));
 }
 
 bool LLPanelEstateAccess::refreshFromRegion(LLViewerRegion* region)
@@ -4046,21 +4169,21 @@ LLPanelRegionEnvironment::~LLPanelRegionEnvironment()
         mCommitConnect.disconnect();
 }
 
-BOOL LLPanelRegionEnvironment::postBuild()
+bool LLPanelRegionEnvironment::postBuild()
 {
     LLEstateInfoModel& estate_info = LLEstateInfoModel::instance();
 
     if (!LLPanelEnvironmentInfo::postBuild())
-        return FALSE;
+        return false;
 
     getChild<LLUICtrl>(BTN_USEDEFAULT)->setLabelArg("[USEDEFAULT]", getString(STR_LABEL_USEDEFAULT));
-    getChild<LLUICtrl>(CHK_ALLOWOVERRIDE)->setVisible(TRUE);
-    getChild<LLUICtrl>(PNL_ENVIRONMENT_ALTITUDES)->setVisible(TRUE);
+    getChild<LLUICtrl>(CHK_ALLOWOVERRIDE)->setVisible(true);
+    getChild<LLUICtrl>(PNL_ENVIRONMENT_ALTITUDES)->setVisible(true);
 
     getChild<LLUICtrl>(CHK_ALLOWOVERRIDE)->setCommitCallback([this](LLUICtrl *, const LLSD &value){ onChkAllowOverride(value.asBoolean()); });
 
     mCommitConnect = estate_info.setCommitCallback(boost::bind(&LLPanelRegionEnvironment::refreshFromEstate, this));
-    return TRUE;
+    return true;
 }
 
 
diff --git a/indra/newview/llfloaterregioninfo.h b/indra/newview/llfloaterregioninfo.h
index c96e11b5be..5623bc20cb 100644
--- a/indra/newview/llfloaterregioninfo.h
+++ b/indra/newview/llfloaterregioninfo.h
@@ -79,12 +79,13 @@ public:
 
     void onOpen(const LLSD& key) override;
     void onClose(bool app_quitting) override;
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     static void processEstateOwnerRequest(LLMessageSystem* msg, void**);
 
     // get and process region info if necessary.
     static void processRegionInfo(LLMessageSystem* msg);
+    static void sRefreshFromRegion(LLViewerRegion* region);
 
     static const LLUUID& getLastInvoice() { return sRequestInvoice; }
     static void nextInvoice() { sRequestInvoice.generate(); }
@@ -146,20 +147,21 @@ public:
     virtual bool refreshFromRegion(LLViewerRegion* region);
     virtual bool estateUpdate(LLMessageSystem* msg) { return true; }
 
-    BOOL postBuild() override;
+    bool postBuild() override;
     virtual void updateChild(LLUICtrl* child_ctrl);
 
-    void enableButton(const std::string& btn_name, BOOL enable = TRUE);
+    void enableButton(const std::string& btn_name, bool enable = true);
     void disableButton(const std::string& btn_name);
 
     void onClickManageTelehub();
 
 protected:
     void initCtrl(const std::string& name);
+    template<typename CTRL> void initAndSetCtrl(CTRL*& ctrl, const std::string& name);
 
-    // Returns TRUE if update sent and apply button should be
+    // Returns true if update sent and apply button should be
     // disabled.
-    virtual BOOL sendUpdate() { return TRUE; }
+    virtual bool sendUpdate() { return true; }
 
     typedef std::vector<std::string> strings_t;
     //typedef std::vector<U32> integers_t;
@@ -188,13 +190,13 @@ public:
 
     bool refreshFromRegion(LLViewerRegion* region) override;
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void onBtnSet();
     void setObjBonusFactor(F32 object_bonus_factor) {mObjBonusFactor = object_bonus_factor;}
 
 protected:
-    BOOL sendUpdate() override;
+    bool sendUpdate() override;
     void onClickKick();
     void onKickCommit(const uuid_vec_t& ids);
     static void onClickKickAll(void* userdata);
@@ -216,12 +218,12 @@ public:
         :   LLPanelRegionInfo(), mTargetAvatar() {}
     ~LLPanelRegionDebugInfo() {}
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     bool refreshFromRegion(LLViewerRegion* region) override;
 
 protected:
-    BOOL sendUpdate() override;
+    bool sendUpdate() override;
 
     void onClickChooseAvatar();
     void callbackAvatarID(const uuid_vec_t& ids, const std::vector<LLAvatarName> names);
@@ -248,14 +250,14 @@ public:
     LLPanelRegionTerrainInfo();
     ~LLPanelRegionTerrainInfo() {}
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     bool refreshFromRegion(LLViewerRegion* region) override;                // refresh local settings from region update from simulator
     void setEnvControls(bool available);                                    // Whether environment settings are available for this region
 
     bool validateTextureSizes();
     bool validateMaterials();
-    BOOL validateTextureHeights();
+    bool validateTextureHeights();
 
     //static void onChangeAnything(LLUICtrl* ctrl, void* userData);         // callback for any change, to enable commit button
 
@@ -269,7 +271,7 @@ public:
     bool callbackTextureHeights(const LLSD& notification, const LLSD& response);
 
 protected:
-    BOOL sendUpdate() override;
+    bool sendUpdate() override;
 
 private:
     bool mConfirmedTextureHeights;
@@ -277,8 +279,15 @@ private:
     LLCheckBoxCtrl* mMaterialTypeCtrl = nullptr;
     LLTextureCtrl* mTextureDetailCtrl[LLTerrainMaterials::ASSET_COUNT];
     LLTextureCtrl* mMaterialDetailCtrl[LLTerrainMaterials::ASSET_COUNT];
+
     LLUUID mLastSetTextures[LLTerrainMaterials::ASSET_COUNT];
     LLUUID mLastSetMaterials[LLTerrainMaterials::ASSET_COUNT];
+
+    LLSpinCtrl* mMaterialScaleUCtrl[LLTerrainMaterials::ASSET_COUNT];
+    LLSpinCtrl* mMaterialScaleVCtrl[LLTerrainMaterials::ASSET_COUNT];
+    LLSpinCtrl* mMaterialRotationCtrl[LLTerrainMaterials::ASSET_COUNT];
+    LLSpinCtrl* mMaterialOffsetUCtrl[LLTerrainMaterials::ASSET_COUNT];
+    LLSpinCtrl* mMaterialOffsetVCtrl[LLTerrainMaterials::ASSET_COUNT];
 };
 
 /////////////////////////////////////////////////////////////////////////////
@@ -317,7 +326,7 @@ public:
     bool refreshFromRegion(LLViewerRegion* region) override;
     bool estateUpdate(LLMessageSystem* msg) override;
 
-    BOOL postBuild() override;
+    bool postBuild() override;
     void updateChild(LLUICtrl* child_ctrl) override;
     void refresh() override;
 
@@ -329,14 +338,14 @@ public:
     void setOwnerName(const std::string& name);
 
 protected:
-    BOOL sendUpdate() override;
+    bool sendUpdate() override;
     // confirmation dialog callback
     bool callbackChangeLindenEstate(const LLSD& notification, const LLSD& response);
 
     void commitEstateAccess();
     void commitEstateManagers();
 
-    BOOL checkSunHourSlider(LLUICtrl* child_ctrl);
+    bool checkSunHourSlider(LLUICtrl* child_ctrl);
 
     U32 mEstateID;
 };
@@ -349,14 +358,14 @@ public:
     LLPanelEstateCovenant();
     ~LLPanelEstateCovenant() {}
 
-    BOOL postBuild() override;
+    bool postBuild() override;
     void updateChild(LLUICtrl* child_ctrl) override;
     bool refreshFromRegion(LLViewerRegion* region) override;
     bool estateUpdate(LLMessageSystem* msg) override;
 
     // LLView overrides
-    BOOL handleDragAndDrop(S32 x, S32 y, MASK mask,
-                           BOOL drop, EDragAndDropType cargo_type,
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask,
+                           bool drop, EDragAndDropType cargo_type,
                            void *cargo_data, EAcceptance *accept,
                            std::string& tooltip_msg) override;
     static bool confirmChangeCovenantCallback(const LLSD& notification, const LLSD& response);
@@ -391,7 +400,7 @@ public:
     } EAssetStatus;
 
 protected:
-    BOOL sendUpdate() override;
+    bool sendUpdate() override;
     LLTextBox*              mEstateNameText;
     LLTextBox*              mEstateOwnerText;
     LLTextBox*              mLastModifiedText;
@@ -410,7 +419,7 @@ class LLPanelRegionExperiences : public LLPanelRegionInfo
 
 public:
     LLPanelRegionExperiences(){}
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     static bool experienceCoreConfirm(const LLSD& notification, const LLSD& response);
     static void sendEstateExperienceDelta(U32 flags, const LLUUID& agent_id);
@@ -421,7 +430,7 @@ public:
     void processResponse( const LLSD& content );
 
 protected:
-    BOOL sendUpdate() override;
+    bool sendUpdate() override;
 
 private:
     void refreshRegionExperiences();
@@ -447,7 +456,7 @@ class LLPanelEstateAccess : public LLPanelRegionInfo
 public:
     LLPanelEstateAccess();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
     void updateChild(LLUICtrl* child_ctrl) override;
 
     void updateControls(LLViewerRegion* region);
@@ -498,7 +507,7 @@ private:
     void copyListToClipboard(std::string list_name);
 
     bool mPendingUpdate;
-    BOOL mCtrlsEnabled;
+    bool mCtrlsEnabled;
 };
 
 #endif
diff --git a/indra/newview/llfloaterregionrestarting.cpp b/indra/newview/llfloaterregionrestarting.cpp
index 1df2825fe0..6b795e5bc5 100644
--- a/indra/newview/llfloaterregionrestarting.cpp
+++ b/indra/newview/llfloaterregionrestarting.cpp
@@ -50,7 +50,7 @@ LLFloaterRegionRestarting::~LLFloaterRegionRestarting()
     mRegionChangedConnection.disconnect();
 }
 
-BOOL LLFloaterRegionRestarting::postBuild()
+bool LLFloaterRegionRestarting::postBuild()
 {
     mRegionChangedConnection = gAgent.addRegionChangedCallback(boost::bind(&LLFloaterRegionRestarting::regionChange, this));
 
@@ -66,7 +66,7 @@ BOOL LLFloaterRegionRestarting::postBuild()
 
     refresh();
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterRegionRestarting::regionChange()
@@ -74,11 +74,11 @@ void LLFloaterRegionRestarting::regionChange()
     close();
 }
 
-BOOL LLFloaterRegionRestarting::tick()
+bool LLFloaterRegionRestarting::tick()
 {
     refresh();
 
-    return FALSE;
+    return false;
 }
 
 void LLFloaterRegionRestarting::refresh()
diff --git a/indra/newview/llfloaterregionrestarting.h b/indra/newview/llfloaterregionrestarting.h
index ab080073e7..ee836dd00d 100644
--- a/indra/newview/llfloaterregionrestarting.h
+++ b/indra/newview/llfloaterregionrestarting.h
@@ -42,8 +42,8 @@ public:
 private:
     LLFloaterRegionRestarting(const LLSD& key);
     virtual ~LLFloaterRegionRestarting();
-    virtual BOOL postBuild();
-    virtual BOOL tick();
+    virtual bool postBuild();
+    virtual bool tick();
     virtual void refresh();
     virtual void draw();
     virtual void regionChange();
diff --git a/indra/newview/llfloaterreporter.cpp b/indra/newview/llfloaterreporter.cpp
index bcfe422d7a..e2c6305f4f 100644
--- a/indra/newview/llfloaterreporter.cpp
+++ b/indra/newview/llfloaterreporter.cpp
@@ -151,10 +151,10 @@ LLFloaterReporter::LLFloaterReporter(const LLSD& key)
     mScreenID(),
     mAbuserID(),
     mOwnerName(),
-    mDeselectOnClose( FALSE ),
-    mPicking( FALSE),
+    mDeselectOnClose( false ),
+    mPicking( false),
     mPosition(),
-    mCopyrightWarningSeen( FALSE ),
+    mCopyrightWarningSeen( false ),
     mResourceDatap(new LLResourceData()),
     mAvatarNameCacheConnection()
 {
@@ -162,13 +162,13 @@ LLFloaterReporter::LLFloaterReporter(const LLSD& key)
 }
 
 // virtual
-BOOL LLFloaterReporter::postBuild()
+bool LLFloaterReporter::postBuild()
 {
     LLSLURL slurl;
     LLAgentUI::buildSLURL(slurl);
     getChild<LLUICtrl>("abuse_location_edit")->setValue(slurl.getSLURLString());
 
-    enableControls(TRUE);
+    enableControls(true);
 
     // convert the position to a string
     LLVector3d pos = gAgent.getPositionGlobal();
@@ -185,7 +185,7 @@ BOOL LLFloaterReporter::postBuild()
     getChild<LLUICtrl>("owner_name")->setValue(LLStringUtil::null);
     mOwnerName = LLStringUtil::null;
 
-    getChild<LLUICtrl>("summary_edit")->setFocus(TRUE);
+    getChild<LLUICtrl>("summary_edit")->setFocus(true);
 
     mDefaultSummary = getChild<LLUICtrl>("details_edit")->getValue().asString();
 
@@ -229,7 +229,7 @@ BOOL LLFloaterReporter::postBuild()
 
     center();
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -268,11 +268,11 @@ void LLFloaterReporter::onIdle(void* user_data)
     }
 }
 
-void LLFloaterReporter::enableControls(BOOL enable)
+void LLFloaterReporter::enableControls(bool enable)
 {
     getChildView("category_combo")->setEnabled(enable);
     getChildView("chat_check")->setEnabled(enable);
-    getChildView("screenshot")->setEnabled(FALSE);
+    getChildView("screenshot")->setEnabled(false);
     getChildView("pick_btn")->setEnabled(enable);
     getChildView("summary_edit")->setEnabled(enable);
     getChildView("details_edit")->setEnabled(enable);
@@ -365,10 +365,10 @@ void LLFloaterReporter::getObjectInfo(const LLUUID& object_id)
 
 void LLFloaterReporter::onClickSelectAbuser()
 {
-    LLView * button = findChild<LLButton>("select_abuser", TRUE);
+    LLView * button = findChild<LLButton>("select_abuser", true);
 
     LLFloater * root_floater = gFloaterView->getParentFloater(this);
-    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLFloaterReporter::callbackAvatarID, this, _1, _2), FALSE, TRUE, FALSE, root_floater->getName(), button);
+    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLFloaterReporter::callbackAvatarID, this, _1, _2), false, true, false, root_floater->getName(), button);
     if (picker)
     {
         root_floater->addDependentFloater(picker);
@@ -504,7 +504,7 @@ void LLFloaterReporter::onClickSend(void *userdata)
                     category_value == IP_PERMISSONS_EXPLOIT)
                 {
                     LLNotificationsUtil::add("HelpReportAbuseContainsCopyright");
-                    self->mCopyrightWarningSeen = TRUE;
+                    self->mCopyrightWarningSeen = true;
                     return;
                 }
             }
@@ -528,8 +528,8 @@ void LLFloaterReporter::onClickSend(void *userdata)
         }
         else
         {
-            self->getChildView("send_btn")->setEnabled(FALSE);
-            self->getChildView("cancel_btn")->setEnabled(FALSE);
+            self->getChildView("send_btn")->setEnabled(false);
+            self->getChildView("cancel_btn")->setEnabled(false);
             // the callback from uploading the image calls sendReportViaLegacy()
             self->uploadImage();
         }
@@ -543,7 +543,7 @@ void LLFloaterReporter::onClickCancel(void *userdata)
     LLFloaterReporter *self = (LLFloaterReporter *)userdata;
 
     // reset flag in case the next report also contains this text
-    self->mCopyrightWarningSeen = FALSE;
+    self->mCopyrightWarningSeen = false;
 
     if (self->mPicking)
     {
@@ -559,12 +559,12 @@ void LLFloaterReporter::onClickObjPicker(void *userdata)
     LLFloaterReporter *self = (LLFloaterReporter *)userdata;
     LLToolObjPicker::getInstance()->setExitCallback(LLFloaterReporter::closePickTool, self);
     LLToolMgr::getInstance()->setTransientTool(LLToolObjPicker::getInstance());
-    self->mPicking = TRUE;
+    self->mPicking = true;
     self->getChild<LLUICtrl>("object_name")->setValue(LLStringUtil::null);
     self->getChild<LLUICtrl>("owner_name")->setValue(LLStringUtil::null);
     self->mOwnerName = LLStringUtil::null;
     LLButton* pick_btn = self->getChild<LLButton>("pick_btn");
-    if (pick_btn) pick_btn->setToggleState(TRUE);
+    if (pick_btn) pick_btn->setToggleState(true);
 }
 
 
@@ -577,9 +577,9 @@ void LLFloaterReporter::closePickTool(void *userdata)
     self->getObjectInfo(object_id);
 
     LLToolMgr::getInstance()->clearTransientTool();
-    self->mPicking = FALSE;
+    self->mPicking = false;
     LLButton* pick_btn = self->getChild<LLButton>("pick_btn");
-    if (pick_btn) pick_btn->setToggleState(FALSE);
+    if (pick_btn) pick_btn->setToggleState(false);
 }
 
 
@@ -594,7 +594,7 @@ void LLFloaterReporter::showFromMenu(EReportType report_type)
     LLFloaterReporter* reporter_floater = LLFloaterReg::findTypedInstance<LLFloaterReporter>("reporter");
     if(reporter_floater && reporter_floater->isInVisibleChain())
     {
-        gSavedPerAccountSettings.setBOOL("PreviousScreenshotForReport", FALSE);
+        gSavedPerAccountSettings.setBOOL("PreviousScreenshotForReport", false);
     }
     reporter_floater = LLFloaterReg::showTypedInstance<LLFloaterReporter>("reporter", LLSD());
     if (reporter_floater)
@@ -609,7 +609,7 @@ void LLFloaterReporter::show(const LLUUID& object_id, const std::string& avatar_
     LLFloaterReporter* reporter_floater = LLFloaterReg::findTypedInstance<LLFloaterReporter>("reporter");
     if(reporter_floater && reporter_floater->isInVisibleChain())
     {
-        gSavedPerAccountSettings.setBOOL("PreviousScreenshotForReport", FALSE);
+        gSavedPerAccountSettings.setBOOL("PreviousScreenshotForReport", false);
     }
     reporter_floater = LLFloaterReg::showTypedInstance<LLFloaterReporter>("reporter");
     if (avatar_name.empty())
@@ -627,7 +627,7 @@ void LLFloaterReporter::show(const LLUUID& object_id, const std::string& avatar_
     }
 
     // Need to deselect on close
-    reporter_floater->mDeselectOnClose = TRUE;
+    reporter_floater->mDeselectOnClose = true;
 }
 
 
@@ -637,13 +637,13 @@ void LLFloaterReporter::showFromExperience( const LLUUID& experience_id )
     LLFloaterReporter* reporter_floater = LLFloaterReg::findTypedInstance<LLFloaterReporter>("reporter");
     if(reporter_floater && reporter_floater->isInVisibleChain())
     {
-        gSavedPerAccountSettings.setBOOL("PreviousScreenshotForReport", FALSE);
+        gSavedPerAccountSettings.setBOOL("PreviousScreenshotForReport", false);
     }
     reporter_floater = LLFloaterReg::showTypedInstance<LLFloaterReporter>("reporter");
     reporter_floater->getExperienceInfo(experience_id);
 
     // Need to deselect on close
-    reporter_floater->mDeselectOnClose = TRUE;
+    reporter_floater->mDeselectOnClose = true;
 }
 
 
@@ -739,7 +739,7 @@ LLSD LLFloaterReporter::gatherReport()
     if (!regionp) return LLSD(); // *TODO handle this failure case more gracefully
 
     // reset flag in case the next report also contains this text
-    mCopyrightWarningSeen = FALSE;
+    mCopyrightWarningSeen = false;
 
     std::ostringstream summary;
     if (!LLGridManager::getInstance()->isInProductionGrid())
@@ -873,7 +873,7 @@ void LLFloaterReporter::sendReportViaCaps(std::string url, std::string sshot_url
 
 void LLFloaterReporter::takeScreenshot(bool use_prev_screenshot)
 {
-    gSavedPerAccountSettings.setBOOL("PreviousScreenshotForReport", TRUE);
+    gSavedPerAccountSettings.setBOOL("PreviousScreenshotForReport", true);
     if(!use_prev_screenshot)
     {
         std::string screenshot_filename(gDirUtilp->getLindenUserDir() + gDirUtilp->getDirDelimiter() + SCREEN_PREV_FILENAME);
@@ -917,7 +917,7 @@ void LLFloaterReporter::takeScreenshot(bool use_prev_screenshot)
     // store in the image list so it doesn't try to fetch from the server
     LLPointer<LLViewerFetchedTexture> image_in_list =
         LLViewerTextureManager::getFetchedTexture(mResourceDatap->mAssetInfo.mUuid);
-    image_in_list->createGLTexture(0, mImageRaw, 0, TRUE, LLGLTexture::OTHER);
+    image_in_list->createGLTexture(0, mImageRaw, 0, true, LLGLTexture::OTHER);
 
     // the texture picker then uses that texture
     LLTextureCtrl* texture = getChild<LLTextureCtrl>("screenshot");
@@ -937,14 +937,14 @@ void LLFloaterReporter::takeNewSnapshot()
     const S32 IMAGE_HEIGHT = 768;
 
     // Take a screenshot, but don't draw this floater.
-    setVisible(FALSE);
-    if (!gViewerWindow->rawSnapshot(mImageRaw,IMAGE_WIDTH, IMAGE_HEIGHT, TRUE, FALSE, TRUE /*UI*/, TRUE, FALSE))
+    setVisible(false);
+    if (!gViewerWindow->rawSnapshot(mImageRaw,IMAGE_WIDTH, IMAGE_HEIGHT, true, false, true /*UI*/, true, false))
     {
         LL_WARNS() << "Unable to take screenshot" << LL_ENDL;
-        setVisible(TRUE);
+        setVisible(true);
         return;
     }
-    setVisible(TRUE);
+    setVisible(true);
 
     if(gSavedPerAccountSettings.getBOOL("PreviousScreenshotForReport"))
     {
@@ -988,7 +988,7 @@ void LLFloaterReporter::uploadImage()
     gAssetStorage->storeAssetData(mResourceDatap->mAssetInfo.mTransactionID,
                                     mResourceDatap->mAssetInfo.mType,
                                     LLFloaterReporter::uploadDoneCallback,
-                                    (void*)mResourceDatap, TRUE);
+                                    (void*)mResourceDatap, true);
 }
 
 
diff --git a/indra/newview/llfloaterreporter.h b/indra/newview/llfloaterreporter.h
index f10fcc8a0c..31b05235a6 100644
--- a/indra/newview/llfloaterreporter.h
+++ b/indra/newview/llfloaterreporter.h
@@ -80,7 +80,7 @@ class LLFloaterReporter
 public:
     LLFloaterReporter(const LLSD& key);
     /*virtual*/ ~LLFloaterReporter();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
     /*virtual*/ void onClose(bool app_quitting);
 
@@ -119,7 +119,7 @@ private:
     void sendReportViaLegacy(const LLSD & report);
     void sendReportViaCaps(std::string url, std::string sshot_url, const LLSD & report);
     void setPosBox(const LLVector3d &pos);
-    void enableControls(BOOL own_avatar);
+    void enableControls(bool own_avatar);
     void getExperienceInfo(const LLUUID& object_id);
     void getObjectInfo(const LLUUID& object_id);
     void callbackAvatarID(const uuid_vec_t& ids, const std::vector<LLAvatarName> names);
@@ -137,10 +137,10 @@ private:
     LLUUID          mExperienceID;
     // Store the real name, not the link, for upstream reporting
     std::string     mOwnerName;
-    BOOL            mDeselectOnClose;
-    BOOL            mPicking;
+    bool            mDeselectOnClose;
+    bool            mPicking;
     LLVector3       mPosition;
-    BOOL            mCopyrightWarningSeen;
+    bool            mCopyrightWarningSeen;
     std::string     mDefaultSummary;
     LLResourceData* mResourceDatap;
     boost::signals2::connection mAvatarNameCacheConnection;
diff --git a/indra/newview/llfloatersavecamerapreset.cpp b/indra/newview/llfloatersavecamerapreset.cpp
index 0224d8652e..53c5e6ce31 100644
--- a/indra/newview/llfloatersavecamerapreset.cpp
+++ b/indra/newview/llfloatersavecamerapreset.cpp
@@ -47,7 +47,7 @@ LLFloaterSaveCameraPreset::LLFloaterSaveCameraPreset(const LLSD &key)
 }
 
 // virtual
-BOOL LLFloaterSaveCameraPreset::postBuild()
+bool LLFloaterSaveCameraPreset::postBuild()
 {
     mPresetCombo = getChild<LLComboBox>("preset_combo");
 
@@ -64,7 +64,7 @@ BOOL LLFloaterSaveCameraPreset::postBuild()
 
     LLPresetsManager::instance().setPresetListChangeCallback(boost::bind(&LLFloaterSaveCameraPreset::onPresetsListChange, this));
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterSaveCameraPreset::onPresetNameEdited()
@@ -113,7 +113,7 @@ void LLFloaterSaveCameraPreset::onBtnSave()
             gSavedSettings.setVector3("CameraOffsetRearView", gAgentCamera.getCurrentCameraOffset());
             gSavedSettings.setVector3d("FocusOffsetRearView", gAgentCamera.getCurrentFocusOffset());
             gAgentCamera.resetCameraZoomFraction();
-            gAgentCamera.setFocusOnAvatar(TRUE, TRUE, FALSE);
+            gAgentCamera.setFocusOnAvatar(true, true, false);
         }
         else
         {
diff --git a/indra/newview/llfloatersavecamerapreset.h b/indra/newview/llfloatersavecamerapreset.h
index b90b406d1f..b37713a81a 100644
--- a/indra/newview/llfloatersavecamerapreset.h
+++ b/indra/newview/llfloatersavecamerapreset.h
@@ -40,8 +40,8 @@ class LLFloaterSaveCameraPreset : public LLModalDialog
 public:
     LLFloaterSaveCameraPreset(const LLSD &key);
 
-    /*virtual*/ BOOL    postBuild();
-    /*virtual*/ void    onOpen(const LLSD& key);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
 
     void onBtnSave();
     void onBtnCancel();
diff --git a/indra/newview/llfloatersaveprefpreset.cpp b/indra/newview/llfloatersaveprefpreset.cpp
index f70dc04d14..170f74abd3 100644
--- a/indra/newview/llfloatersaveprefpreset.cpp
+++ b/indra/newview/llfloatersaveprefpreset.cpp
@@ -42,7 +42,7 @@ LLFloaterSavePrefPreset::LLFloaterSavePrefPreset(const LLSD &key)
 }
 
 // virtual
-BOOL LLFloaterSavePrefPreset::postBuild()
+bool LLFloaterSavePrefPreset::postBuild()
 {
     LLFloaterPreference* preferences = LLFloaterReg::getTypedInstance<LLFloaterPreference>("preferences");
     if (preferences)
@@ -61,7 +61,7 @@ BOOL LLFloaterSavePrefPreset::postBuild()
     mSaveButton = getChild<LLButton>("save");
     mPresetCombo = getChild<LLComboBox>("preset_combo");
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterSavePrefPreset::onPresetNameEdited()
diff --git a/indra/newview/llfloatersaveprefpreset.h b/indra/newview/llfloatersaveprefpreset.h
index c6bfbd37ba..db48749e38 100644
--- a/indra/newview/llfloatersaveprefpreset.h
+++ b/indra/newview/llfloatersaveprefpreset.h
@@ -38,8 +38,8 @@ class LLFloaterSavePrefPreset : public LLFloater
 public:
     LLFloaterSavePrefPreset(const LLSD &key);
 
-    /*virtual*/ BOOL    postBuild();
-    /*virtual*/ void    onOpen(const LLSD& key);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
 
     void onBtnSave();
     void onBtnCancel();
diff --git a/indra/newview/llfloatersceneloadstats.cpp b/indra/newview/llfloatersceneloadstats.cpp
index 99b098e205..58b32bde9b 100644
--- a/indra/newview/llfloatersceneloadstats.cpp
+++ b/indra/newview/llfloatersceneloadstats.cpp
@@ -34,7 +34,7 @@ LLFloaterSceneLoadStats::LLFloaterSceneLoadStats( const LLSD& key )
 :   LLFloater(key)
 {}
 
-BOOL LLFloaterSceneLoadStats::postBuild()
+bool LLFloaterSceneLoadStats::postBuild()
 {
-    return TRUE;
+    return true;
 }
diff --git a/indra/newview/llfloatersceneloadstats.h b/indra/newview/llfloatersceneloadstats.h
index f6b99d7dab..1522e54137 100644
--- a/indra/newview/llfloatersceneloadstats.h
+++ b/indra/newview/llfloatersceneloadstats.h
@@ -36,7 +36,7 @@ private:
     LLFloaterSceneLoadStats(const LLSD& key);
 
 public:
-    BOOL postBuild();
+    bool postBuild() override;
 
 };
 
diff --git a/indra/newview/llfloaterscriptdebug.cpp b/indra/newview/llfloaterscriptdebug.cpp
index 8331e034c0..49cb5d34ff 100644
--- a/indra/newview/llfloaterscriptdebug.cpp
+++ b/indra/newview/llfloaterscriptdebug.cpp
@@ -55,9 +55,9 @@ LLFloaterScriptDebug::LLFloaterScriptDebug(const LLSD& key)
 {
     // avoid resizing of the window to match
     // the initial size of the tabbed-childs, whenever a tab is opened or closed
-    mAutoResize = FALSE;
+    mAutoResize = false;
     // enabled autocous blocks controling focus via  LLFloaterReg::showInstance
-    setAutoFocus(FALSE);
+    setAutoFocus(false);
 }
 
 LLFloaterScriptDebug::~LLFloaterScriptDebug()
@@ -69,26 +69,26 @@ void LLFloaterScriptDebug::show(const LLUUID& object_id)
     addOutputWindow(object_id);
 }
 
-BOOL LLFloaterScriptDebug::postBuild()
+bool LLFloaterScriptDebug::postBuild()
 {
     LLMultiFloater::postBuild();
 
     if (mTabContainer)
     {
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-void LLFloaterScriptDebug::setVisible(BOOL visible)
+void LLFloaterScriptDebug::setVisible(bool visible)
 {
     if(visible)
     {
         LLFloaterScriptDebugOutput* floater_output = LLFloaterReg::findTypedInstance<LLFloaterScriptDebugOutput>("script_debug_output", LLUUID::null);
         if (floater_output == NULL)
         {
-            floater_output = dynamic_cast<LLFloaterScriptDebugOutput*>(LLFloaterReg::showInstance("script_debug_output", LLUUID::null, FALSE));
+            floater_output = dynamic_cast<LLFloaterScriptDebugOutput*>(LLFloaterReg::showInstance("script_debug_output", LLUUID::null, false));
             if (floater_output)
             {
                 addFloater(floater_output, false);
@@ -119,7 +119,7 @@ LLFloater* LLFloaterScriptDebug::addOutputWindow(const LLUUID &object_id)
 
     LLFloater::setFloaterHost(host);
     // prevent stealing focus, see EXT-8040
-    LLFloater* floaterp = LLFloaterReg::showInstance("script_debug_output", object_id, FALSE);
+    LLFloater* floaterp = LLFloaterReg::showInstance("script_debug_output", object_id, false);
     LLFloater::setFloaterHost(NULL);
 
     return floaterp;
@@ -140,12 +140,12 @@ void LLFloaterScriptDebug::addScriptLine(const std::string &utf8mesg, const std:
         {
             if (isAgentAvatarValid())
             {
-                ((LLViewerObject*)gAgentAvatarp)->setIcon(LLViewerTextureManager::getFetchedTextureFromFile("script_error.j2c", FTT_LOCAL_FILE, TRUE, LLGLTexture::BOOST_UI));
+                ((LLViewerObject*)gAgentAvatarp)->setIcon(LLViewerTextureManager::getFetchedTextureFromFile("script_error.j2c", FTT_LOCAL_FILE, true, LLGLTexture::BOOST_UI));
             }
         }
         else
         {
-            objectp->setIcon(LLViewerTextureManager::getFetchedTextureFromFile("script_error.j2c", FTT_LOCAL_FILE, TRUE, LLGLTexture::BOOST_UI));
+            objectp->setIcon(LLViewerTextureManager::getFetchedTextureFromFile("script_error.j2c", FTT_LOCAL_FILE, true, LLGLTexture::BOOST_UI));
         }
         floater_label = llformat("%s(%.0f, %.0f, %.0f)",
                         user_name.c_str(),
@@ -184,14 +184,14 @@ LLFloaterScriptDebugOutput::LLFloaterScriptDebugOutput(const LLSD& object_id)
     mObjectID(object_id.asUUID())
 {
     // enabled autocous blocks controling focus via  LLFloaterReg::showInstance
-    setAutoFocus(FALSE);
+    setAutoFocus(false);
 }
 
-BOOL LLFloaterScriptDebugOutput::postBuild()
+bool LLFloaterScriptDebugOutput::postBuild()
 {
     LLFloater::postBuild();
     mHistoryEditor = getChild<LLViewerTextEditor>("Chat History Editor");
-    return TRUE;
+    return true;
 }
 
 LLFloaterScriptDebugOutput::~LLFloaterScriptDebugOutput()
@@ -202,8 +202,8 @@ void LLFloaterScriptDebugOutput::addLine(const std::string &utf8mesg, const std:
 {
     if (mObjectID.isNull())
     {
-        setCanTearOff(FALSE);
-        setCanClose(FALSE);
+        setCanTearOff(false);
+        setCanClose(false);
     }
     else
     {
diff --git a/indra/newview/llfloaterscriptdebug.h b/indra/newview/llfloaterscriptdebug.h
index 9a5ccecb8c..972202257b 100644
--- a/indra/newview/llfloaterscriptdebug.h
+++ b/indra/newview/llfloaterscriptdebug.h
@@ -37,8 +37,8 @@ class LLFloaterScriptDebug : public LLMultiFloater
 public:
     LLFloaterScriptDebug(const LLSD& key);
     virtual ~LLFloaterScriptDebug();
-    virtual BOOL postBuild();
-    virtual void setVisible(BOOL visible);
+    virtual bool postBuild();
+    virtual void setVisible(bool visible);
     static void show(const LLUUID& object_id);
 
     /*virtual*/ void closeFloater(bool app_quitting = false);
@@ -59,7 +59,7 @@ public:
 
     void addLine(const std::string &utf8mesg, const std::string &user_name, const LLColor4& color);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
 protected:
     LLTextEditor* mHistoryEditor;
diff --git a/indra/newview/llfloaterscriptedprefs.cpp b/indra/newview/llfloaterscriptedprefs.cpp
index 89c5d3617c..a38c4b51f2 100644
--- a/indra/newview/llfloaterscriptedprefs.cpp
+++ b/indra/newview/llfloaterscriptedprefs.cpp
@@ -40,7 +40,7 @@ LLFloaterScriptEdPrefs::LLFloaterScriptEdPrefs(const LLSD& key)
     mCommitCallbackRegistrar.add("ScriptPref.getUIColor",   boost::bind(&LLFloaterScriptEdPrefs::getUIColor, this ,_1, _2));
 }
 
-BOOL LLFloaterScriptEdPrefs::postBuild()
+bool LLFloaterScriptEdPrefs::postBuild()
 {
     mEditor = getChild<LLScriptEditor>("Script Preview");
     if (mEditor)
@@ -48,7 +48,7 @@ BOOL LLFloaterScriptEdPrefs::postBuild()
         mEditor->initKeywords();
         mEditor->loadKeywords();
     }
-    return TRUE;
+    return true;
 }
 
 void LLFloaterScriptEdPrefs::applyUIColor(LLUICtrl* ctrl, const LLSD& param)
diff --git a/indra/newview/llfloaterscriptedprefs.h b/indra/newview/llfloaterscriptedprefs.h
index 135c5bb6c7..6654832a6d 100644
--- a/indra/newview/llfloaterscriptedprefs.h
+++ b/indra/newview/llfloaterscriptedprefs.h
@@ -37,7 +37,7 @@ class LLFloaterScriptEdPrefs : public LLFloater
 {
 public:
     LLFloaterScriptEdPrefs(const LLSD& key);
-    BOOL postBuild();
+    bool postBuild() override;
 
 private:
     ~LLFloaterScriptEdPrefs() {};
diff --git a/indra/newview/llfloaterscriptlimits.cpp b/indra/newview/llfloaterscriptlimits.cpp
index 8f3260ca3e..b3452a25c5 100644
--- a/indra/newview/llfloaterscriptlimits.cpp
+++ b/indra/newview/llfloaterscriptlimits.cpp
@@ -88,14 +88,14 @@ LLFloaterScriptLimits::LLFloaterScriptLimits(const LLSD& seed)
 {
 }
 
-BOOL LLFloaterScriptLimits::postBuild()
+bool LLFloaterScriptLimits::postBuild()
 {
     mTab = getChild<LLTabContainer>("scriptlimits_panels");
 
     if(!mTab)
     {
         LL_WARNS() << "Error! couldn't get scriptlimits_panels, aborting Script Information setup" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // contruct the panel
@@ -104,7 +104,7 @@ BOOL LLFloaterScriptLimits::postBuild()
     panel_memory->buildFromFile( "panel_script_limits_region_memory.xml");
     mTab->addTabPanel(panel_memory);
     mTab->selectTab(0);
-    return TRUE;
+    return true;
 }
 
 LLFloaterScriptLimits::~LLFloaterScriptLimits()
@@ -132,10 +132,10 @@ LLPanelScriptLimitsInfo::LLPanelScriptLimitsInfo()
 
 
 // virtual
-BOOL LLPanelScriptLimitsInfo::postBuild()
+bool LLPanelScriptLimitsInfo::postBuild()
 {
     refresh();
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -156,9 +156,9 @@ LLPanelScriptLimitsRegionMemory::~LLPanelScriptLimitsRegionMemory()
     }
 };
 
-BOOL LLPanelScriptLimitsRegionMemory::getLandScriptResources()
+bool LLPanelScriptLimitsRegionMemory::getLandScriptResources()
 {
-    if (!gAgent.getRegion()) return FALSE;
+    if (!gAgent.getRegion()) return false;
 
     LLSD body;
     std::string url = gAgent.getRegion()->getCapability("LandResources");
@@ -166,11 +166,11 @@ BOOL LLPanelScriptLimitsRegionMemory::getLandScriptResources()
     {
         LLCoros::instance().launch("LLPanelScriptLimitsRegionMemory::getLandScriptResourcesCoro",
             boost::bind(&LLPanelScriptLimitsRegionMemory::getLandScriptResourcesCoro, this, url));
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -403,7 +403,7 @@ void LLPanelScriptLimitsRegionMemory::setRegionDetails(LLSD content)
         return;
     }
 
-    S32 number_parcels = content["parcels"].size();
+    auto number_parcels = content["parcels"].size();
 
     LLStringUtil::format_map_t args_parcels;
     args_parcels["[PARCELS]"] = llformat ("%d", number_parcels);
@@ -418,10 +418,10 @@ void LLPanelScriptLimitsRegionMemory::setRegionDetails(LLSD content)
     bool has_locations = false;
     bool has_local_ids = false;
 
-    for(S32 i = 0; i < number_parcels; i++)
+    for(size_t i = 0; i < number_parcels; i++)
     {
         std::string parcel_name = content["parcels"][i]["name"].asString();
-        S32 number_objects = content["parcels"][i]["objects"].size();
+        auto number_objects = content["parcels"][i]["objects"].size();
 
         S32 local_id = 0;
         if(content["parcels"][i].has("local_id"))
@@ -431,7 +431,7 @@ void LLPanelScriptLimitsRegionMemory::setRegionDetails(LLSD content)
             local_id = content["parcels"][i]["local_id"].asInteger();
         }
 
-        for(S32 j = 0; j < number_objects; j++)
+        for(size_t j = 0; j < number_objects; j++)
         {
             S32 size = content["parcels"][i]["objects"][j]["resources"]["memory"].asInteger() / SIZE_OF_ONE_KB;
 
@@ -468,7 +468,7 @@ void LLPanelScriptLimitsRegionMemory::setRegionDetails(LLSD content)
             // ...and if not use the slightly more painful method of disovery:
             else
             {
-                BOOL name_is_cached;
+                bool name_is_cached;
                 if (is_group_owned)
                 {
                     name_is_cached = gCacheName->getGroupName(owner_id, owner_buf);
@@ -640,7 +640,7 @@ void LLPanelScriptLimitsRegionMemory::setRegionSummary(LLSD content)
     }
 }
 
-BOOL LLPanelScriptLimitsRegionMemory::postBuild()
+bool LLPanelScriptLimitsRegionMemory::postBuild()
 {
     childSetAction("refresh_list_btn", onClickRefresh, this);
     childSetAction("highlight_btn", onClickHighlight, this);
@@ -652,7 +652,7 @@ BOOL LLPanelScriptLimitsRegionMemory::postBuild()
     LLScrollListCtrl *list = getChild<LLScrollListCtrl>("scripts_list");
     if(!list)
     {
-        return FALSE;
+        return false;
     }
     list->setCommitCallback(boost::bind(&LLPanelScriptLimitsRegionMemory::checkButtonsEnabled, this));
     checkButtonsEnabled();
@@ -661,13 +661,13 @@ BOOL LLPanelScriptLimitsRegionMemory::postBuild()
     for(S32 column = 0; column < list->getNumColumns(); column++)
     {
         LLScrollListColumn* columnp = list->getColumn(column);
-        columnp->mHeader->setHasResizableElement(TRUE);
+        columnp->mHeader->setHasResizableElement(true);
     }
 
     return StartRequestChain();
 }
 
-BOOL LLPanelScriptLimitsRegionMemory::StartRequestChain()
+bool LLPanelScriptLimitsRegionMemory::StartRequestChain()
 {
     LLUUID region_id;
 
@@ -677,7 +677,7 @@ BOOL LLPanelScriptLimitsRegionMemory::StartRequestChain()
         getChild<LLUICtrl>("loading_text")->setValue(LLSD(std::string("")));
         //might have to do parent post build here
         //if not logic below could use early outs
-        return FALSE;
+        return false;
     }
     LLParcel* parcel = instance->getCurrentSelectedParcel();
     LLViewerRegion* region = LLViewerParcelMgr::getInstance()->getSelectionRegion();
@@ -693,7 +693,7 @@ BOOL LLPanelScriptLimitsRegionMemory::StartRequestChain()
         {
             std::string msg_wrong_region = LLTrans::getString("ScriptLimitsRequestWrongRegion");
             getChild<LLUICtrl>("loading_text")->setValue(LLSD(msg_wrong_region));
-            return FALSE;
+            return false;
         }
 
         LLVector3d pos_global = region->getCenterGlobal();
@@ -898,10 +898,10 @@ void LLPanelScriptLimitsRegionMemory::returnObjects()
         return;
     }
 
-    S32 number_parcels = mContent["parcels"].size();
+    auto number_parcels = mContent["parcels"].size();
 
     // a message per parcel containing all objects to be returned from that parcel
-    for(S32 i = 0; i < number_parcels; i++)
+    for(size_t i = 0; i < number_parcels; i++)
     {
         S32 local_id = 0;
         if(mContent["parcels"][i].has("local_id"))
diff --git a/indra/newview/llfloaterscriptlimits.h b/indra/newview/llfloaterscriptlimits.h
index 8c5bdb99cd..e1eb8cb079 100644
--- a/indra/newview/llfloaterscriptlimits.h
+++ b/indra/newview/llfloaterscriptlimits.h
@@ -47,7 +47,7 @@ class LLFloaterScriptLimits : public LLFloater
     friend class LLFloaterReg;
 public:
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     // from LLPanel
     virtual void refresh();
@@ -71,7 +71,7 @@ class LLPanelScriptLimitsInfo : public LLPanel
 public:
     LLPanelScriptLimitsInfo();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     virtual void updateChild(LLUICtrl* child_ctrl);
 
 protected:
@@ -102,14 +102,14 @@ public:
     ~LLPanelScriptLimitsRegionMemory();
 
     // LLPanel
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     void setRegionDetails(LLSD content);
     void setRegionSummary(LLSD content);
 
-    BOOL StartRequestChain();
+    bool StartRequestChain();
 
-    BOOL getLandScriptResources();
+    bool getLandScriptResources();
     void clearList();
     void showBeacon();
     void returnObjectsFromParcel(S32 local_id);
diff --git a/indra/newview/llfloatersearch.cpp b/indra/newview/llfloatersearch.cpp
index bd32807bb9..d3c8bf3451 100644
--- a/indra/newview/llfloatersearch.cpp
+++ b/indra/newview/llfloatersearch.cpp
@@ -100,12 +100,12 @@ LLFloaterSearch::LLFloaterSearch(const Params& key) :
     mCollectionType.insert("people");
 }
 
-BOOL LLFloaterSearch::postBuild()
+bool LLFloaterSearch::postBuild()
 {
     LLFloaterWebContent::postBuild();
     mWebBrowser->addObserver(this);
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterSearch::onOpen(const LLSD& key)
@@ -115,7 +115,7 @@ void LLFloaterSearch::onOpen(const LLSD& key)
     p.allow_address_entry = false;
 
     LLFloaterWebContent::onOpen(p);
-    mWebBrowser->setFocus(TRUE);
+    mWebBrowser->setFocus(true);
     search(p.search);
 }
 
@@ -147,7 +147,7 @@ void LLFloaterSearch::search(const SearchQuery &p)
     }
 
     // reset the god level warning as we're sending the latest state
-    getChildView("refresh_search")->setVisible(FALSE);
+    getChildView("refresh_search")->setVisible(false);
     mSearchGodLevel = gAgent.getGodLevel();
 
     // work out the subdir to use based on the requested category
diff --git a/indra/newview/llfloatersearch.h b/indra/newview/llfloatersearch.h
index 5350c34c56..beaac2ad2f 100644
--- a/indra/newview/llfloatersearch.h
+++ b/indra/newview/llfloatersearch.h
@@ -83,7 +83,7 @@ public:
     void godLevelChanged(U8 godlevel);
 
 private:
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     std::set<std::string> mSearchType;
     std::set<std::string> mCollectionType;
diff --git a/indra/newview/llfloatersellland.cpp b/indra/newview/llfloatersellland.cpp
index f44c9ea953..691458d80a 100644
--- a/indra/newview/llfloatersellland.cpp
+++ b/indra/newview/llfloatersellland.cpp
@@ -99,7 +99,7 @@ private:
     void onBuyerNameCache(const LLAvatarName& av_name);
 
 public:
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     bool setParcel(LLViewerRegion* region, LLParcelSelectionHandle parcel);
     static bool callbackHighlightTransferable(const LLSD& notification, const LLSD& response);
@@ -165,7 +165,7 @@ void LLFloaterSellLandUI::SelectionObserver::changed()
     }
 }
 
-BOOL LLFloaterSellLandUI::postBuild()
+bool LLFloaterSellLandUI::postBuild()
 {
     childSetCommitCallback("sell_to", onChangeValue, this);
     childSetCommitCallback("price", onChangeValue, this);
@@ -177,7 +177,7 @@ BOOL LLFloaterSellLandUI::postBuild()
     childSetAction("show_objects", doShowObjects, this);
     center();
     getChild<LLUICtrl>("profile_scroll")->setTabStop(true);
-    return TRUE;
+    return true;
 }
 
 bool LLFloaterSellLandUI::setParcel(LLViewerRegion* region, LLParcelSelectionHandle parcel)
@@ -289,13 +289,13 @@ void LLFloaterSellLandUI::refreshUI()
         F32 per_meter_price = 0;
         per_meter_price = F32(mParcelPrice) / F32(mParcelActualArea);
         getChild<LLUICtrl>("price_per_m")->setTextArg("[PER_METER]", llformat("%0.2f", per_meter_price));
-        getChildView("price_per_m")->setVisible(TRUE);
+        getChildView("price_per_m")->setVisible(true);
 
         setBadge("step_price", BADGE_OK);
     }
     else
     {
-        getChildView("price_per_m")->setVisible(FALSE);
+        getChildView("price_per_m")->setVisible(false);
 
         if (price_str.empty())
         {
@@ -310,8 +310,8 @@ void LLFloaterSellLandUI::refreshUI()
     if (mSellToBuyer)
     {
         getChild<LLUICtrl>("sell_to")->setValue("user");
-        getChildView("sell_to_agent")->setVisible(TRUE);
-        getChildView("sell_to_select_agent")->setVisible(TRUE);
+        getChildView("sell_to_agent")->setVisible(true);
+        getChildView("sell_to_select_agent")->setVisible(true);
     }
     else
     {
@@ -323,8 +323,8 @@ void LLFloaterSellLandUI::refreshUI()
         {
             getChild<LLUICtrl>("sell_to")->setValue("select");
         }
-        getChildView("sell_to_agent")->setVisible(FALSE);
-        getChildView("sell_to_select_agent")->setVisible(FALSE);
+        getChildView("sell_to_agent")->setVisible(false);
+        getChildView("sell_to_select_agent")->setVisible(false);
     }
 
     // Must select Sell To: Anybody, or User (with a specified username)
@@ -351,11 +351,11 @@ void LLFloaterSellLandUI::refreshUI()
 
     if (valid_sell_to && valid_price && valid_sell_objects)
     {
-        getChildView("sell_btn")->setEnabled(TRUE);
+        getChildView("sell_btn")->setEnabled(true);
     }
     else
     {
-        getChildView("sell_btn")->setEnabled(FALSE);
+        getChildView("sell_btn")->setEnabled(false);
     }
 }
 
@@ -398,7 +398,7 @@ void LLFloaterSellLandUI::onChangeValue(LLUICtrl *ctrl, void *userdata)
 void LLFloaterSellLandUI::doSelectAgent()
 {
     LLView * button = findChild<LLView>("sell_to_select_agent");
-    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLFloaterSellLandUI::callbackAvatarPick, this, _1, _2), FALSE, TRUE, FALSE, this->getName(), button);
+    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLFloaterSellLandUI::callbackAvatarPick, this, _1, _2), false, true, false, this->getName(), button);
     // grandparent is a floater, in order to set up dependency
     if (picker)
     {
@@ -532,7 +532,7 @@ bool LLFloaterSellLandUI::onConfirmSale(const LLSD& notification, const LLSD& re
 //      return;
 //  }
 
-    parcel->setParcelFlag(PF_FOR_SALE, TRUE);
+    parcel->setParcelFlag(PF_FOR_SALE, true);
     parcel->setSalePrice(sale_price);
     bool sell_with_objects = false;
     if ("yes" == getChild<LLUICtrl>("sell_objects")->getValue().asString())
diff --git a/indra/newview/llfloatersettingsdebug.cpp b/indra/newview/llfloatersettingsdebug.cpp
index 0c5762e4b1..17707e808e 100644
--- a/indra/newview/llfloatersettingsdebug.cpp
+++ b/indra/newview/llfloatersettingsdebug.cpp
@@ -47,7 +47,7 @@ LLFloaterSettingsDebug::LLFloaterSettingsDebug(const LLSD& key)
 LLFloaterSettingsDebug::~LLFloaterSettingsDebug()
 {}
 
-BOOL LLFloaterSettingsDebug::postBuild()
+bool LLFloaterSettingsDebug::postBuild()
 {
     enableResizeCtrls(true, false, true);
 
@@ -56,14 +56,14 @@ BOOL LLFloaterSettingsDebug::postBuild()
     getChild<LLFilterEditor>("filter_input")->setCommitCallback(boost::bind(&LLFloaterSettingsDebug::setSearchFilter, this, _2));
 
     mSettingList = getChild<LLScrollListCtrl>("setting_list");
-    mSettingList->setCommitOnSelectionChange(TRUE);
+    mSettingList->setCommitOnSelectionChange(true);
     mSettingList->setCommitCallback(boost::bind(&LLFloaterSettingsDebug::onSettingSelect, this));
 
     updateList();
 
     gSavedSettings.getControl("DebugSettingsHideDefault")->getCommitSignal()->connect(boost::bind(&LLFloaterSettingsDebug::updateList, this, false));
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterSettingsDebug::draw()
@@ -247,7 +247,7 @@ void LLFloaterSettingsDebug::updateControl(LLControlVariable* controlp)
         switch(type)
         {
           case TYPE_U32:
-            spinner1->setVisible(TRUE);
+            spinner1->setVisible(true);
             spinner1->setLabel(std::string("value")); // Debug, don't translate
             if (!spinner1->hasFocus())
             {
@@ -259,7 +259,7 @@ void LLFloaterSettingsDebug::updateControl(LLControlVariable* controlp)
             }
             break;
           case TYPE_S32:
-            spinner1->setVisible(TRUE);
+            spinner1->setVisible(true);
             spinner1->setLabel(std::string("value")); // Debug, don't translate
             if (!spinner1->hasFocus())
             {
@@ -271,7 +271,7 @@ void LLFloaterSettingsDebug::updateControl(LLControlVariable* controlp)
             }
             break;
           case TYPE_F32:
-            spinner1->setVisible(TRUE);
+            spinner1->setVisible(true);
             spinner1->setLabel(std::string("value")); // Debug, don't translate
             if (!spinner1->hasFocus())
             {
@@ -293,7 +293,7 @@ void LLFloaterSettingsDebug::updateControl(LLControlVariable* controlp)
             }
             break;
           case TYPE_STRING:
-            getChildView("val_text")->setVisible( TRUE);
+            getChildView("val_text")->setVisible( true);
             if (!getChild<LLUICtrl>("val_text")->hasFocus())
             {
                 getChild<LLUICtrl>("val_text")->setValue(sd);
@@ -303,11 +303,11 @@ void LLFloaterSettingsDebug::updateControl(LLControlVariable* controlp)
           {
             LLVector3 v;
             v.setValue(sd);
-            spinner1->setVisible(TRUE);
+            spinner1->setVisible(true);
             spinner1->setLabel(std::string("X"));
-            spinner2->setVisible(TRUE);
+            spinner2->setVisible(true);
             spinner2->setLabel(std::string("Y"));
-            spinner3->setVisible(TRUE);
+            spinner3->setVisible(true);
             spinner3->setLabel(std::string("Z"));
             if (!spinner1->hasFocus())
             {
@@ -330,11 +330,11 @@ void LLFloaterSettingsDebug::updateControl(LLControlVariable* controlp)
           {
             LLVector3d v;
             v.setValue(sd);
-            spinner1->setVisible(TRUE);
+            spinner1->setVisible(true);
             spinner1->setLabel(std::string("X"));
-            spinner2->setVisible(TRUE);
+            spinner2->setVisible(true);
             spinner2->setLabel(std::string("Y"));
-            spinner3->setVisible(TRUE);
+            spinner3->setVisible(true);
             spinner3->setLabel(std::string("Z"));
             if (!spinner1->hasFocus())
             {
@@ -357,13 +357,13 @@ void LLFloaterSettingsDebug::updateControl(LLControlVariable* controlp)
           {
               LLQuaternion q;
               q.setValue(sd);
-              spinner1->setVisible(TRUE);
+              spinner1->setVisible(true);
               spinner1->setLabel(std::string("X"));
-              spinner2->setVisible(TRUE);
+              spinner2->setVisible(true);
               spinner2->setLabel(std::string("Y"));
-              spinner3->setVisible(TRUE);
+              spinner3->setVisible(true);
               spinner3->setLabel(std::string("Z"));
-              spinner4->setVisible(TRUE);
+              spinner4->setVisible(true);
               spinner4->setLabel(std::string("S"));
               if (!spinner1->hasFocus())
               {
@@ -391,13 +391,13 @@ void LLFloaterSettingsDebug::updateControl(LLControlVariable* controlp)
           {
             LLRect r;
             r.setValue(sd);
-            spinner1->setVisible(TRUE);
+            spinner1->setVisible(true);
             spinner1->setLabel(std::string("Left"));
-            spinner2->setVisible(TRUE);
+            spinner2->setVisible(true);
             spinner2->setLabel(std::string("Right"));
-            spinner3->setVisible(TRUE);
+            spinner3->setVisible(true);
             spinner3->setLabel(std::string("Bottom"));
-            spinner4->setVisible(TRUE);
+            spinner4->setVisible(true);
             spinner4->setLabel(std::string("Top"));
             if (!spinner1->hasFocus())
             {
@@ -441,13 +441,13 @@ void LLFloaterSettingsDebug::updateControl(LLControlVariable* controlp)
           {
             LLColor4 clr;
             clr.setValue(sd);
-            color_swatch->setVisible(TRUE);
+            color_swatch->setVisible(true);
             // only set if changed so color picker doesn't update
             if(clr != LLColor4(color_swatch->getValue()))
             {
-                color_swatch->set(LLColor4(sd), TRUE, FALSE);
+                color_swatch->set(LLColor4(sd), true, false);
             }
-            spinner4->setVisible(TRUE);
+            spinner4->setVisible(true);
             spinner4->setLabel(std::string("Alpha"));
             if (!spinner4->hasFocus())
             {
@@ -462,7 +462,7 @@ void LLFloaterSettingsDebug::updateControl(LLControlVariable* controlp)
           {
             LLColor3 clr;
             clr.setValue(sd);
-            color_swatch->setVisible(TRUE);
+            color_swatch->setVisible(true);
             color_swatch->setValue(sd);
             break;
           }
diff --git a/indra/newview/llfloatersettingsdebug.h b/indra/newview/llfloatersettingsdebug.h
index 5a392e766c..4df0dc8dd2 100644
--- a/indra/newview/llfloatersettingsdebug.h
+++ b/indra/newview/llfloatersettingsdebug.h
@@ -39,7 +39,7 @@ class LLFloaterSettingsDebug
 
 public:
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     virtual void draw();
 
     void updateControl(LLControlVariable* control);
diff --git a/indra/newview/llfloatersidepanelcontainer.cpp b/indra/newview/llfloatersidepanelcontainer.cpp
index c99d156c3a..2f6d14d6b5 100644
--- a/indra/newview/llfloatersidepanelcontainer.cpp
+++ b/indra/newview/llfloatersidepanelcontainer.cpp
@@ -125,7 +125,7 @@ LLPanel* LLFloaterSidePanelContainer::openChildPanel(const std::string& panel_na
     }
     else if (!hasFocus())
     {
-        setFocus(TRUE);
+        setFocus(true);
     }
 
     LLPanel* panel = NULL;
diff --git a/indra/newview/llfloatersimplesnapshot.cpp b/indra/newview/llfloatersimplesnapshot.cpp
index 5d65bf2d0d..c0de8ab811 100644
--- a/indra/newview/llfloatersimplesnapshot.cpp
+++ b/indra/newview/llfloatersimplesnapshot.cpp
@@ -50,7 +50,7 @@ const S32 LLFloaterSimpleSnapshot::THUMBNAIL_SNAPSHOT_DIM_MIN = 64;
 
 static const std::string THUMBNAIL_UPLOAD_CAP = "InventoryThumbnailUpload";
 
-void post_thumbnail_image_coro(std::string cap_url, std::string path_to_image, LLSD first_data)
+void post_thumbnail_image_coro(std::string cap_url, std::string path_to_image, LLSD first_data, LLFloaterSimpleSnapshot::completion_t callback)
 {
     LLCore::HttpRequest::policy_t httpPolicy(LLCore::HttpRequest::DEFAULT_POLICY_ID);
     LLCoreHttpUtil::HttpCoroutineAdapter::ptr_t
@@ -129,6 +129,11 @@ void post_thumbnail_image_coro(std::string cap_url, std::string path_to_image, L
         {
             LL_WARNS("Thumbnail") << "Failed to upload image " << result << LL_ENDL;
         }
+
+        if (callback)
+        {
+            callback(LLUUID());
+        }
         return;
     }
 
@@ -153,6 +158,11 @@ void post_thumbnail_image_coro(std::string cap_url, std::string path_to_image, L
         // Are we supposed to get BulkUpdateInventory?
         gInventory.addChangedMask(LLInventoryObserver::INTERNAL, item_id);
     }
+
+    if (callback)
+    {
+        callback(result["new_asset"].asUUID());
+    }
 }
 
 ///----------------------------------------------------------------------------
@@ -218,8 +228,8 @@ void LLFloaterSimpleSnapshot::Impl::updateResolution(void* data)
         if (original_width != width || original_height != height)
         {
             // hide old preview as the aspect ratio could be wrong
-            checkAutoSnapshot(previewp, FALSE);
-            previewp->updateSnapshot(TRUE);
+            checkAutoSnapshot(previewp, false);
+            previewp->updateSnapshot(true);
         }
     }
 }
@@ -258,7 +268,7 @@ LLFloaterSimpleSnapshot::~LLFloaterSimpleSnapshot()
 {
 }
 
-BOOL LLFloaterSimpleSnapshot::postBuild()
+bool LLFloaterSimpleSnapshot::postBuild()
 {
     childSetAction("new_snapshot_btn", ImplBase::onClickNewSnapshot, this);
     childSetAction("save_btn", boost::bind(&LLFloaterSimpleSnapshot::onSend, this));
@@ -281,15 +291,15 @@ BOOL LLFloaterSimpleSnapshot::postBuild()
     impl->setAdvanced(true);
     impl->setSkipReshaping(true);
 
-    previewp->mKeepAspectRatio = FALSE;
+    previewp->mKeepAspectRatio = false;
     previewp->setThumbnailPlaceholderRect(getThumbnailPlaceholderRect());
     previewp->setAllowRenderUI(false);
-    previewp->setThumbnailSubsampled(TRUE);
+    previewp->setThumbnailSubsampled(true);
 
-    return TRUE;
+    return true;
 }
 
-const S32 PREVIEW_OFFSET_Y = 70;
+constexpr S32 PREVIEW_OFFSET_Y = 70;
 
 void LLFloaterSimpleSnapshot::draw()
 {
@@ -338,12 +348,12 @@ void LLFloaterSimpleSnapshot::onOpen(const LLSD& key)
     LLSnapshotLivePreview* preview = getPreviewView();
     if (preview)
     {
-        preview->updateSnapshot(TRUE);
+        preview->updateSnapshot(true);
     }
-    focusFirstItem(FALSE);
-    gSnapshotFloaterView->setEnabled(TRUE);
-    gSnapshotFloaterView->setVisible(TRUE);
-    gSnapshotFloaterView->adjustToFitScreen(this, FALSE);
+    focusFirstItem(false);
+    gSnapshotFloaterView->setEnabled(true);
+    gSnapshotFloaterView->setVisible(true);
+    gSnapshotFloaterView->adjustToFitScreen(this, false);
 
     impl->updateControls(this);
     impl->setStatus(ImplBase::STATUS_READY);
@@ -364,7 +374,7 @@ void LLFloaterSimpleSnapshot::onSend()
     std::string temp_file = gDirUtilp->getTempFilename();
     if (previewp->createUploadFile(temp_file, THUMBNAIL_SNAPSHOT_DIM_MAX, THUMBNAIL_SNAPSHOT_DIM_MIN))
     {
-        uploadImageUploadFile(temp_file, mInventoryId, mTaskId);
+        uploadImageUploadFile(temp_file, mInventoryId, mTaskId, mUploadCompletionCallback);
         closeFloater();
     }
     else
@@ -372,6 +382,10 @@ void LLFloaterSimpleSnapshot::onSend()
         LLSD notif_args;
         notif_args["REASON"] = LLImage::getLastThreadError().c_str();
         LLNotificationsUtil::add("CannotUploadTexture", notif_args);
+        if (mUploadCompletionCallback)
+        {
+            mUploadCompletionCallback(LLUUID::null);
+        }
     }
 }
 
@@ -381,7 +395,10 @@ void LLFloaterSimpleSnapshot::postSave()
 }
 
 // static
-void LLFloaterSimpleSnapshot::uploadThumbnail(const std::string &file_path, const LLUUID &inventory_id, const LLUUID &task_id)
+void LLFloaterSimpleSnapshot::uploadThumbnail(const std::string &file_path,
+                                              const LLUUID &inventory_id,
+                                              const LLUUID &task_id,
+                                              completion_t callback)
 {
     // generate a temp texture file for coroutine
     std::string temp_file = gDirUtilp->getTempFilename();
@@ -394,11 +411,14 @@ void LLFloaterSimpleSnapshot::uploadThumbnail(const std::string &file_path, cons
         LL_WARNS("Thumbnail") << "Failed to upload thumbnail for " << inventory_id << " " << task_id << ", reason: " << notif_args["REASON"].asString() << LL_ENDL;
         return;
     }
-    uploadImageUploadFile(temp_file, inventory_id, task_id);
+    uploadImageUploadFile(temp_file, inventory_id, task_id, callback);
 }
 
 // static
-void LLFloaterSimpleSnapshot::uploadThumbnail(LLPointer<LLImageRaw> raw_image, const LLUUID& inventory_id, const LLUUID& task_id)
+void LLFloaterSimpleSnapshot::uploadThumbnail(LLPointer<LLImageRaw> raw_image,
+                                              const LLUUID& inventory_id,
+                                              const LLUUID& task_id,
+                                              completion_t callback)
 {
     std::string temp_file = gDirUtilp->getTempFilename();
     if (!LLViewerTextureList::createUploadFile(raw_image, temp_file, THUMBNAIL_SNAPSHOT_DIM_MAX, THUMBNAIL_SNAPSHOT_DIM_MIN))
@@ -409,11 +429,14 @@ void LLFloaterSimpleSnapshot::uploadThumbnail(LLPointer<LLImageRaw> raw_image, c
         LL_WARNS("Thumbnail") << "Failed to upload thumbnail for " << inventory_id << " " << task_id << ", reason: " << notif_args["REASON"].asString() << LL_ENDL;
         return;
     }
-    uploadImageUploadFile(temp_file, inventory_id, task_id);
+    uploadImageUploadFile(temp_file, inventory_id, task_id, callback);
 }
 
 // static
-void LLFloaterSimpleSnapshot::uploadImageUploadFile(const std::string &temp_file, const LLUUID &inventory_id, const LLUUID &task_id)
+void LLFloaterSimpleSnapshot::uploadImageUploadFile(const std::string &temp_file,
+                                                    const LLUUID &inventory_id,
+                                                    const LLUUID &task_id,
+                                                    completion_t callback)
 {
     LLSD data;
 
@@ -442,7 +465,7 @@ void LLFloaterSimpleSnapshot::uploadImageUploadFile(const std::string &temp_file
     }
 
     LLCoros::instance().launch("postAgentUserImageCoro",
-        boost::bind(post_thumbnail_image_coro, cap_url, temp_file, data));
+        boost::bind(post_thumbnail_image_coro, cap_url, temp_file, data, callback));
 }
 
 void LLFloaterSimpleSnapshot::update()
@@ -482,7 +505,7 @@ void LLFloaterSimpleSnapshot::saveTexture()
         return;
     }
 
-    previewp->saveTexture(TRUE, getInventoryId().asString());
+    previewp->saveTexture(true, getInventoryId().asString());
     closeFloater();
 }
 
diff --git a/indra/newview/llfloatersimplesnapshot.h b/indra/newview/llfloatersimplesnapshot.h
index f6b79fd2ea..487e77469c 100644
--- a/indra/newview/llfloatersimplesnapshot.h
+++ b/indra/newview/llfloatersimplesnapshot.h
@@ -44,7 +44,7 @@ public:
     LLFloaterSimpleSnapshot(const LLSD& key);
     ~LLFloaterSimpleSnapshot();
 
-    BOOL postBuild();
+    bool postBuild();
     void onOpen(const LLSD& key);
     void draw();
 
@@ -62,8 +62,17 @@ public:
     void setOwner(LLView *owner_view) { mOwner = owner_view; }
 
     void postSave();
-    static void uploadThumbnail(const std::string &file_path, const LLUUID &inventory_id, const LLUUID &task_id);
-    static void uploadThumbnail(LLPointer<LLImageRaw> raw_image, const LLUUID& inventory_id, const LLUUID& task_id);
+
+    typedef boost::function<void(const LLUUID& asset_id)> completion_t;
+    void setComplectionCallback(completion_t callback) { mUploadCompletionCallback = callback; }
+    static void uploadThumbnail(const std::string &file_path,
+                                const LLUUID &inventory_id,
+                                const LLUUID &task_id,
+                                completion_t callback = completion_t());
+    static void uploadThumbnail(LLPointer<LLImageRaw> raw_image,
+                                const LLUUID& inventory_id,
+                                const LLUUID& task_id,
+                                completion_t callback = completion_t());
 
     class Impl;
     friend class Impl;
@@ -76,13 +85,17 @@ private:
     void onCancel();
 
     // uploads upload-ready file
-    static void uploadImageUploadFile(const std::string &temp_file, const LLUUID &inventory_id, const LLUUID &task_id);
+    static void uploadImageUploadFile(const std::string &temp_file,
+                                      const LLUUID &inventory_id,
+                                      const LLUUID &task_id,
+                                      completion_t callback);
 
     LLUUID mInventoryId;
     LLUUID mTaskId;
 
     LLView* mOwner;
     F32  mContextConeOpacity;
+    completion_t mUploadCompletionCallback;
 };
 
 ///----------------------------------------------------------------------------
diff --git a/indra/newview/llfloatersnapshot.cpp b/indra/newview/llfloatersnapshot.cpp
index 68ed0f5873..2bac7d6360 100644
--- a/indra/newview/llfloatersnapshot.cpp
+++ b/indra/newview/llfloatersnapshot.cpp
@@ -100,7 +100,7 @@ LLSpinCtrl* LLFloaterSnapshot::Impl::getHeightSpinner(LLFloaterSnapshotBase* flo
     return active_panel ? active_panel->getHeightSpinner() : floater->getChild<LLSpinCtrl>("snapshot_height");
 }
 
-void LLFloaterSnapshot::Impl::enableAspectRatioCheckbox(LLFloaterSnapshotBase* floater, BOOL enable)
+void LLFloaterSnapshot::Impl::enableAspectRatioCheckbox(LLFloaterSnapshotBase* floater, bool enable)
 {
     LLPanelSnapshot* active_panel = getActivePanel(floater);
     if (active_panel)
@@ -109,7 +109,7 @@ void LLFloaterSnapshot::Impl::enableAspectRatioCheckbox(LLFloaterSnapshotBase* f
     }
 }
 
-void LLFloaterSnapshot::Impl::setAspectRatioCheckboxValue(LLFloaterSnapshotBase* floater, BOOL checked)
+void LLFloaterSnapshot::Impl::setAspectRatioCheckboxValue(LLFloaterSnapshotBase* floater, bool checked)
 {
     LLPanelSnapshot* active_panel = getActivePanel(floater);
     if (active_panel)
@@ -145,8 +145,8 @@ LLSnapshotModel::ESnapshotLayerType LLFloaterSnapshot::Impl::getLayerType(LLFloa
 void LLFloaterSnapshot::Impl::setResolution(LLFloaterSnapshotBase* floater, const std::string& comboname)
 {
     LLComboBox* combo = floater->getChild<LLComboBox>(comboname);
-        combo->setVisible(TRUE);
-    updateResolution(combo, floater, FALSE); // to sync spinners with combo
+        combo->setVisible(true);
+    updateResolution(combo, floater, false); // to sync spinners with combo
 }
 
 //virtual
@@ -179,7 +179,7 @@ void LLFloaterSnapshotBase::ImplBase::updateLayout(LLFloaterSnapshotBase* floate
 
     floaterp->getChild<LLUICtrl>("image_res_text")->setVisible(mAdvanced);
     floaterp->getChild<LLUICtrl>("file_size_label")->setVisible(mAdvanced);
-    if (floaterp->hasChild("360_label", TRUE))
+    if (floaterp->hasChild("360_label", true))
     {
         floaterp->getChild<LLUICtrl>("360_label")->setVisible(mAdvanced);
     }
@@ -197,7 +197,7 @@ void LLFloaterSnapshotBase::ImplBase::updateLayout(LLFloaterSnapshotBase* floate
     if (use_freeze_frame)
     {
         // stop all mouse events at fullscreen preview layer
-        floaterp->getParent()->setMouseOpaque(TRUE);
+        floaterp->getParent()->setMouseOpaque(true);
 
         // shrink to smaller layout
         // *TODO: unneeded?
@@ -206,8 +206,8 @@ void LLFloaterSnapshotBase::ImplBase::updateLayout(LLFloaterSnapshotBase* floate
         // can see and interact with fullscreen preview now
         if (previewp)
         {
-            previewp->setVisible(TRUE);
-            previewp->setEnabled(TRUE);
+            previewp->setVisible(true);
+            previewp->setEnabled(true);
         }
 
         //RN: freeze all avatars
@@ -220,7 +220,7 @@ void LLFloaterSnapshotBase::ImplBase::updateLayout(LLFloaterSnapshotBase* floate
         }
 
         // freeze everything else
-        gSavedSettings.setBOOL("FreezeTime", TRUE);
+        gSavedSettings.setBOOL("FreezeTime", true);
 
         if (LLToolMgr::getInstance()->getCurrentToolset() != gCameraToolset)
         {
@@ -230,20 +230,20 @@ void LLFloaterSnapshotBase::ImplBase::updateLayout(LLFloaterSnapshotBase* floate
     }
     else // turning off freeze frame mode
     {
-        floaterp->getParent()->setMouseOpaque(FALSE);
+        floaterp->getParent()->setMouseOpaque(false);
         // *TODO: unneeded?
         floaterp->reshape(floaterp->getRect().getWidth(), floaterp->getRect().getHeight());
         if (previewp)
         {
-            previewp->setVisible(FALSE);
-            previewp->setEnabled(FALSE);
+            previewp->setVisible(false);
+            previewp->setEnabled(false);
         }
 
         //RN: thaw all avatars
         floaterp->impl->mAvatarPauseHandles.clear();
 
         // thaw everything else
-        gSavedSettings.setBOOL("FreezeTime", FALSE);
+        gSavedSettings.setBOOL("FreezeTime", false);
 
         // restore last tool (e.g. pie menu, etc)
         if (floaterp->impl->mLastToolset)
@@ -324,8 +324,8 @@ void LLFloaterSnapshot::Impl::updateControls(LLFloaterSnapshotBase* floater)
     }
 
     LLSnapshotLivePreview* previewp = getPreviewView();
-    BOOL got_bytes = previewp && previewp->getDataSize() > 0;
-    BOOL got_snap = previewp && previewp->getSnapshotUpToDate();
+    bool got_bytes = previewp && previewp->getDataSize() > 0;
+    bool got_snap = previewp && previewp->getSnapshotUpToDate();
 
     // *TODO: Separate maximum size for Web images from postcards
     LL_DEBUGS() << "Is snapshot up-to-date? " << got_snap << LL_ENDL;
@@ -433,11 +433,11 @@ void LLFloaterSnapshotBase::ImplBase::setNeedRefresh(bool need)
 }
 
 // virtual
-void LLFloaterSnapshotBase::ImplBase::checkAutoSnapshot(LLSnapshotLivePreview* previewp, BOOL update_thumbnail)
+void LLFloaterSnapshotBase::ImplBase::checkAutoSnapshot(LLSnapshotLivePreview* previewp, bool update_thumbnail)
 {
     if (previewp)
     {
-        BOOL autosnap = gSavedSettings.getBOOL("AutoSnapshot");
+        bool autosnap = gSavedSettings.getBOOL("AutoSnapshot");
         LL_DEBUGS() << "updating " << (autosnap ? "snapshot" : "thumbnail") << LL_ENDL;
         previewp->updateSnapshot(autosnap, update_thumbnail, autosnap ? AUTO_SNAPSHOT_TIME_DELAY : 0.f);
     }
@@ -452,7 +452,7 @@ void LLFloaterSnapshotBase::ImplBase::onClickNewSnapshot(void* data)
     {
         floater->impl->setStatus(ImplBase::STATUS_READY);
         LL_DEBUGS() << "updating snapshot" << LL_ENDL;
-        previewp->mForceUpdateSnapshot = TRUE;
+        previewp->mForceUpdateSnapshot = true;
     }
 }
 
@@ -473,11 +473,11 @@ void LLFloaterSnapshotBase::ImplBase::onClickAutoSnap(LLUICtrl *ctrl, void* data
 // static
 void LLFloaterSnapshotBase::ImplBase::onClickNoPost(LLUICtrl *ctrl, void* data)
 {
-    BOOL no_post = ((LLCheckBoxCtrl*)ctrl)->get();
+    bool no_post = ((LLCheckBoxCtrl*)ctrl)->get();
     gSavedSettings.setBOOL("RenderSnapshotNoPost", no_post);
 
     LLFloaterSnapshotBase* view = (LLFloaterSnapshotBase*)data;
-    view->getPreviewView()->updateSnapshot(TRUE, TRUE);
+    view->getPreviewView()->updateSnapshot(true, true);
     view->impl->updateControls(view);
 }
 
@@ -496,7 +496,7 @@ void LLFloaterSnapshotBase::ImplBase::onClickFilter(LLUICtrl *ctrl, void* data)
             LLComboBox* filterbox = static_cast<LLComboBox *>(view->getChild<LLComboBox>("filters_combobox"));
             std::string filter_name = (filterbox->getCurrentIndex() ? filterbox->getSimple() : "");
             previewp->setFilter(filter_name);
-            previewp->updateSnapshot(TRUE);
+            previewp->updateSnapshot(true);
         }
     }
 }
@@ -513,7 +513,7 @@ void LLFloaterSnapshotBase::ImplBase::onClickUICheck(LLUICtrl *ctrl, void* data)
         LLSnapshotLivePreview* previewp = view->getPreviewView();
         if(previewp)
         {
-            previewp->updateSnapshot(TRUE, TRUE);
+            previewp->updateSnapshot(true, true);
         }
         view->impl->updateControls(view);
     }
@@ -531,13 +531,13 @@ void LLFloaterSnapshotBase::ImplBase::onClickHUDCheck(LLUICtrl *ctrl, void* data
         LLSnapshotLivePreview* previewp = view->getPreviewView();
         if(previewp)
         {
-            previewp->updateSnapshot(TRUE, TRUE);
+            previewp->updateSnapshot(true, true);
         }
         view->impl->updateControls(view);
     }
 }
 
-void LLFloaterSnapshot::Impl::applyKeepAspectCheck(LLFloaterSnapshotBase* view, BOOL checked)
+void LLFloaterSnapshot::Impl::applyKeepAspectCheck(LLFloaterSnapshotBase* view, bool checked)
 {
     gSavedSettings.setBOOL("KeepAspectForSnapshot", checked);
 
@@ -557,12 +557,12 @@ void LLFloaterSnapshot::Impl::applyKeepAspectCheck(LLFloaterSnapshotBase* view,
 
             S32 w, h ;
             previewp->getSize(w, h) ;
-            updateSpinners(view, previewp, w, h, TRUE); // may change w and h
+            updateSpinners(view, previewp, w, h, true); // may change w and h
 
             LL_DEBUGS() << "updating thumbnail" << LL_ENDL;
             previewp->setSize(w, h) ;
-            previewp->updateSnapshot(TRUE);
-            checkAutoSnapshot(previewp, TRUE);
+            previewp->updateSnapshot(true);
+            checkAutoSnapshot(previewp, true);
         }
     }
 }
@@ -596,26 +596,26 @@ void LLFloaterSnapshot::Impl::checkAspectRatio(LLFloaterSnapshotBase *view, S32
     // Don't round texture sizes; textures are commonly stretched in world, profiles, etc and need to be "squashed" during upload, not cropped here
     if (LLSnapshotModel::SNAPSHOT_TEXTURE == getActiveSnapshotType(view))
     {
-        previewp->mKeepAspectRatio = FALSE ;
+        previewp->mKeepAspectRatio = false ;
         return ;
     }
 
-    BOOL keep_aspect = FALSE, enable_cb = FALSE;
+    bool keep_aspect = false, enable_cb = false;
 
     if (0 == index) // current window size
     {
-        enable_cb = FALSE;
-        keep_aspect = TRUE;
+        enable_cb = false;
+        keep_aspect = true;
     }
     else if (-1 == index) // custom
     {
-        enable_cb = TRUE;
+        enable_cb = true;
         keep_aspect = gSavedSettings.getBOOL("KeepAspectForSnapshot");
     }
     else // predefined resolution
     {
-        enable_cb = FALSE;
-        keep_aspect = FALSE;
+        enable_cb = false;
+        keep_aspect = false;
     }
 
     view->impl->mAspectRatioCheckOff = !enable_cb;
@@ -672,7 +672,7 @@ void LLFloaterSnapshot::Impl::setFinished(bool finished, bool ok, const std::str
 }
 
 // Apply a new resolution selected from the given combobox.
-void LLFloaterSnapshot::Impl::updateResolution(LLUICtrl* ctrl, void* data, BOOL do_update)
+void LLFloaterSnapshot::Impl::updateResolution(LLUICtrl* ctrl, void* data, bool do_update)
 {
     LLComboBox* combobox = (LLComboBox*)ctrl;
     LLFloaterSnapshot *view = (LLFloaterSnapshot *)data;
@@ -771,10 +771,10 @@ void LLFloaterSnapshot::Impl::updateResolution(LLUICtrl* ctrl, void* data, BOOL
             previewp->setSize(width, height);
 
             // hide old preview as the aspect ratio could be wrong
-            checkAutoSnapshot(previewp, FALSE);
+            checkAutoSnapshot(previewp, false);
             LL_DEBUGS() << "updating thumbnail" << LL_ENDL;
             // Don't update immediately, give window chance to redraw
-            getPreviewView()->updateSnapshot(TRUE, FALSE, 1.f);
+            getPreviewView()->updateSnapshot(true, false, 1.f);
             if(do_update)
             {
                 LL_DEBUGS() << "Will update controls" << LL_ENDL;
@@ -798,8 +798,8 @@ void LLFloaterSnapshot::Impl::onCommitLayerTypes(LLUICtrl* ctrl, void*data)
         {
             previewp->setSnapshotBufferType((LLSnapshotModel::ESnapshotLayerType)combobox->getCurrentIndex());
         }
-        view->impl->checkAutoSnapshot(previewp, TRUE);
-        previewp->updateSnapshot(TRUE, TRUE);
+        view->impl->checkAutoSnapshot(previewp, true);
+        previewp->updateSnapshot(true, true);
     }
 }
 
@@ -818,7 +818,7 @@ void LLFloaterSnapshot::Impl::onImageFormatChange(LLFloaterSnapshotBase* view)
     {
         gSavedSettings.setS32("SnapshotFormat", getImageFormat(view));
         LL_DEBUGS() << "image format changed, updating snapshot" << LL_ENDL;
-        getPreviewView()->updateSnapshot(TRUE);
+        getPreviewView()->updateSnapshot(true);
         updateControls(view);
     }
 }
@@ -832,7 +832,7 @@ void LLFloaterSnapshot::Impl::comboSetCustom(LLFloaterSnapshotBase* floater, con
 }
 
 // Update supplied width and height according to the constrain proportions flag; limit them by max_val.
-BOOL LLFloaterSnapshot::Impl::checkImageSize(LLSnapshotLivePreview* previewp, S32& width, S32& height, BOOL isWidthChanged, S32 max_value)
+bool LLFloaterSnapshot::Impl::checkImageSize(LLSnapshotLivePreview* previewp, S32& width, S32& height, bool isWidthChanged, S32 max_value)
 {
     S32 w = width ;
     S32 h = height ;
@@ -841,7 +841,7 @@ BOOL LLFloaterSnapshot::Impl::checkImageSize(LLSnapshotLivePreview* previewp, S3
     {
         if(gViewerWindow->getWindowWidthRaw() < 1 || gViewerWindow->getWindowHeightRaw() < 1)
         {
-            return FALSE ;
+            return false ;
         }
 
         //aspect ratio of the current window
@@ -887,7 +887,7 @@ void LLFloaterSnapshot::Impl::setImageSizeSpinnersValues(LLFloaterSnapshotBase*
     }
 }
 
-void LLFloaterSnapshot::Impl::updateSpinners(LLFloaterSnapshotBase* view, LLSnapshotLivePreview* previewp, S32& width, S32& height, BOOL is_width_changed)
+void LLFloaterSnapshot::Impl::updateSpinners(LLFloaterSnapshotBase* view, LLSnapshotLivePreview* previewp, S32& width, S32& height, bool is_width_changed)
 {
     getWidthSpinner(view)->resetDirty();
     getHeightSpinner(view)->resetDirty();
@@ -914,13 +914,13 @@ void LLFloaterSnapshot::Impl::applyCustomResolution(LLFloaterSnapshotBase* view,
             previewp->setMaxImageSize((S32) getWidthSpinner(view)->getMaxValue()) ;
 
             previewp->setSize(w,h);
-            checkAutoSnapshot(previewp, FALSE);
+            checkAutoSnapshot(previewp, false);
             comboSetCustom(view, "profile_size_combo");
             comboSetCustom(view, "postcard_size_combo");
             comboSetCustom(view, "texture_size_combo");
             comboSetCustom(view, "local_size_combo");
             LL_DEBUGS() << "applied custom resolution, updating thumbnail" << LL_ENDL;
-            previewp->updateSnapshot(TRUE);
+            previewp->updateSnapshot(true);
         }
     }
 }
@@ -956,7 +956,7 @@ LLFloaterSnapshotBase::~LLFloaterSnapshotBase()
     if (impl->mPreviewHandle.get()) impl->mPreviewHandle.get()->die();
 
     //unfreeze everything else
-    gSavedSettings.setBOOL("FreezeTime", FALSE);
+    gSavedSettings.setBOOL("FreezeTime", false);
 
     if (impl->mLastToolset)
     {
@@ -982,7 +982,7 @@ LLFloaterSnapshot::~LLFloaterSnapshot()
 }
 
 // virtual
-BOOL LLFloaterSnapshot::postBuild()
+bool LLFloaterSnapshot::postBuild()
 {
     mRefreshBtn = getChild<LLUICtrl>("new_snapshot_btn");
     childSetAction("new_snapshot_btn", ImplBase::onClickNewSnapshot, this);
@@ -1000,7 +1000,7 @@ BOOL LLFloaterSnapshot::postBuild()
 
     childSetCommitCallback("layer_types", Impl::onCommitLayerTypes, this);
     getChild<LLUICtrl>("layer_types")->setValue("colors");
-    getChildView("layer_types")->setEnabled(FALSE);
+    getChildView("layer_types")->setEnabled(false);
 
     getChild<LLUICtrl>("freeze_frame_check")->setValue(gSavedSettings.getBOOL("UseFreezeFrame"));
     childSetCommitCallback("freeze_frame_check", ImplBase::onCommitFreezeFrame, this);
@@ -1064,7 +1064,7 @@ BOOL LLFloaterSnapshot::postBuild()
 
     previewp->setThumbnailPlaceholderRect(getThumbnailPlaceholderRect());
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -1123,13 +1123,13 @@ void LLFloaterSnapshot::onOpen(const LLSD& key)
     if(preview)
     {
         LL_DEBUGS() << "opened, updating snapshot" << LL_ENDL;
-        preview->setAllowFullScreenPreview(TRUE);
-        preview->updateSnapshot(TRUE);
+        preview->setAllowFullScreenPreview(true);
+        preview->updateSnapshot(true);
     }
-    focusFirstItem(FALSE);
-    gSnapshotFloaterView->setEnabled(TRUE);
-    gSnapshotFloaterView->setVisible(TRUE);
-    gSnapshotFloaterView->adjustToFitScreen(this, FALSE);
+    focusFirstItem(false);
+    gSnapshotFloaterView->setEnabled(true);
+    gSnapshotFloaterView->setVisible(true);
+    gSnapshotFloaterView->adjustToFitScreen(this, false);
 
     impl->updateControls(this);
     impl->setAdvanced(gSavedSettings.getBOOL("AdvanceSnapshot"));
@@ -1153,18 +1153,18 @@ void LLFloaterSnapshot::on360Snapshot()
 //virtual
 void LLFloaterSnapshotBase::onClose(bool app_quitting)
 {
-    getParent()->setMouseOpaque(FALSE);
+    getParent()->setMouseOpaque(false);
 
     //unfreeze everything, hide fullscreen preview
     LLSnapshotLivePreview* previewp = getPreviewView();
     if (previewp)
     {
-        previewp->setAllowFullScreenPreview(FALSE);
-        previewp->setVisible(FALSE);
-        previewp->setEnabled(FALSE);
+        previewp->setAllowFullScreenPreview(false);
+        previewp->setVisible(false);
+        previewp->setEnabled(false);
     }
 
-    gSavedSettings.setBOOL("FreezeTime", FALSE);
+    gSavedSettings.setBOOL("FreezeTime", false);
     impl->mAvatarPauseHandles.clear();
 
     if (impl->mLastToolset)
@@ -1263,17 +1263,17 @@ S32 LLFloaterSnapshot::notify(const LLSD& info)
     return 0;
 }
 
-BOOL LLFloaterSnapshot::isWaitingState()
+bool LLFloaterSnapshot::isWaitingState()
 {
     return (impl->getStatus() == ImplBase::STATUS_WORKING);
 }
 
-BOOL LLFloaterSnapshotBase::ImplBase::updatePreviewList(bool initialized)
+bool LLFloaterSnapshotBase::ImplBase::updatePreviewList(bool initialized)
 {
     if (!initialized)
-        return FALSE;
+        return false;
 
-    BOOL changed = FALSE;
+    bool changed = false;
     LL_DEBUGS() << "npreviews: " << LLSnapshotLivePreview::sList.size() << LL_ENDL;
     for (std::set<LLSnapshotLivePreview*>::iterator iter = LLSnapshotLivePreview::sList.begin();
         iter != LLSnapshotLivePreview::sList.end(); ++iter)
@@ -1424,7 +1424,7 @@ LLSnapshotFloaterView::~LLSnapshotFloaterView()
 }
 
 // virtual
-BOOL LLSnapshotFloaterView::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLSnapshotFloaterView::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
     // use default handler when not in freeze-frame mode
     if(!gSavedSettings.getBOOL("FreezeTime"))
@@ -1440,13 +1440,13 @@ BOOL LLSnapshotFloaterView::handleKey(KEY key, MASK mask, BOOL called_from_paren
     else
     {
         // bounce keystrokes back down
-        LLFloaterView::handleKey(key, mask, TRUE);
+        LLFloaterView::handleKey(key, mask, true);
     }
-    return TRUE;
+    return true;
 }
 
 // virtual
-BOOL LLSnapshotFloaterView::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLSnapshotFloaterView::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // use default handler when not in freeze-frame mode
     if(!gSavedSettings.getBOOL("FreezeTime"))
@@ -1458,11 +1458,11 @@ BOOL LLSnapshotFloaterView::handleMouseDown(S32 x, S32 y, MASK mask)
     {
         LLToolMgr::getInstance()->getCurrentTool()->handleMouseDown( x, y, mask );
     }
-    return TRUE;
+    return true;
 }
 
 // virtual
-BOOL LLSnapshotFloaterView::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLSnapshotFloaterView::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     // use default handler when not in freeze-frame mode
     if(!gSavedSettings.getBOOL("FreezeTime"))
@@ -1474,11 +1474,11 @@ BOOL LLSnapshotFloaterView::handleMouseUp(S32 x, S32 y, MASK mask)
     {
         LLToolMgr::getInstance()->getCurrentTool()->handleMouseUp( x, y, mask );
     }
-    return TRUE;
+    return true;
 }
 
 // virtual
-BOOL LLSnapshotFloaterView::handleHover(S32 x, S32 y, MASK mask)
+bool LLSnapshotFloaterView::handleHover(S32 x, S32 y, MASK mask)
 {
     // use default handler when not in freeze-frame mode
     if(!gSavedSettings.getBOOL("FreezeTime"))
@@ -1490,5 +1490,5 @@ BOOL LLSnapshotFloaterView::handleHover(S32 x, S32 y, MASK mask)
     {
         LLToolMgr::getInstance()->getCurrentTool()->handleHover( x, y, mask );
     }
-    return TRUE;
+    return true;
 }
diff --git a/indra/newview/llfloatersnapshot.h b/indra/newview/llfloatersnapshot.h
index b70d07434a..ac5a472b03 100644
--- a/indra/newview/llfloatersnapshot.h
+++ b/indra/newview/llfloatersnapshot.h
@@ -119,13 +119,13 @@ public:
     virtual EStatus getStatus() const { return mStatus; }
     virtual void setNeedRefresh(bool need);
 
-    static BOOL updatePreviewList(bool initialized);
+    static bool updatePreviewList(bool initialized);
 
     void setAdvanced(bool advanced) { mAdvanced = advanced; }
     void setSkipReshaping(bool skip) { mSkipReshaping = skip; }
 
     virtual LLSnapshotModel::ESnapshotLayerType getLayerType(LLFloaterSnapshotBase* floater) = 0;
-    virtual void checkAutoSnapshot(LLSnapshotLivePreview* floater, BOOL update_thumbnail = FALSE);
+    virtual void checkAutoSnapshot(LLSnapshotLivePreview* floater, bool update_thumbnail = false);
     void setWorking(bool working);
     virtual void setFinished(bool finished, bool ok = true, const std::string& msg = LLStringUtil::null) = 0;
 
@@ -150,7 +150,7 @@ public:
     LLFloaterSnapshot(const LLSD& key);
     /*virtual*/ ~LLFloaterSnapshot();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
     /*virtual*/ S32 notify(const LLSD& info);
 
@@ -167,7 +167,7 @@ public:
     void saveLocal(const snapshot_saved_signal_t::slot_type& success_cb, const snapshot_saved_signal_t::slot_type& failure_cb);
     static void setAgentEmail(const std::string& email);
 
-    BOOL isWaitingState();
+    bool isWaitingState();
 
     class Impl;
     friend class Impl;
@@ -187,24 +187,24 @@ public:
     ~Impl()
     {}
 
-    void applyKeepAspectCheck(LLFloaterSnapshotBase* view, BOOL checked);
-    void updateResolution(LLUICtrl* ctrl, void* data, BOOL do_update = TRUE);
+    void applyKeepAspectCheck(LLFloaterSnapshotBase* view, bool checked);
+    void updateResolution(LLUICtrl* ctrl, void* data, bool do_update = true);
     static void onCommitLayerTypes(LLUICtrl* ctrl, void*data);
     void onImageQualityChange(LLFloaterSnapshotBase* view, S32 quality_val);
     void onImageFormatChange(LLFloaterSnapshotBase* view);
     void applyCustomResolution(LLFloaterSnapshotBase* view, S32 w, S32 h);
     static void onSendingPostcardFinished(LLFloaterSnapshotBase* floater, bool status);
-    BOOL checkImageSize(LLSnapshotLivePreview* previewp, S32& width, S32& height, BOOL isWidthChanged, S32 max_value);
+    bool checkImageSize(LLSnapshotLivePreview* previewp, S32& width, S32& height, bool isWidthChanged, S32 max_value);
     void setImageSizeSpinnersValues(LLFloaterSnapshotBase *view, S32 width, S32 height);
-    void updateSpinners(LLFloaterSnapshotBase* view, LLSnapshotLivePreview* previewp, S32& width, S32& height, BOOL is_width_changed);
+    void updateSpinners(LLFloaterSnapshotBase* view, LLSnapshotLivePreview* previewp, S32& width, S32& height, bool is_width_changed);
     static void onSnapshotUploadFinished(LLFloaterSnapshotBase* floater, bool status);
 
     /*virtual*/ LLPanelSnapshot* getActivePanel(LLFloaterSnapshotBase* floater, bool ok_if_not_found = true);
     /*virtual*/ LLSnapshotModel::ESnapshotFormat getImageFormat(LLFloaterSnapshotBase* floater);
     LLSpinCtrl* getWidthSpinner(LLFloaterSnapshotBase* floater);
     LLSpinCtrl* getHeightSpinner(LLFloaterSnapshotBase* floater);
-    void enableAspectRatioCheckbox(LLFloaterSnapshotBase* floater, BOOL enable);
-    void setAspectRatioCheckboxValue(LLFloaterSnapshotBase* floater, BOOL checked);
+    void enableAspectRatioCheckbox(LLFloaterSnapshotBase* floater, bool enable);
+    void setAspectRatioCheckboxValue(LLFloaterSnapshotBase* floater, bool checked);
     /*virtual*/ std::string getSnapshotPanelPrefix();
 
     void setResolution(LLFloaterSnapshotBase* floater, const std::string& comboname);
@@ -232,10 +232,10 @@ protected:
 public:
     virtual ~LLSnapshotFloaterView();
 
-    /*virtual*/ BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent);
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleKey(KEY key, MASK mask, bool called_from_parent);
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
 };
 
 extern LLSnapshotFloaterView* gSnapshotFloaterView;
diff --git a/indra/newview/llfloatersounddevices.cpp b/indra/newview/llfloatersounddevices.cpp
index a5064fa53d..f11c5c0ad8 100644
--- a/indra/newview/llfloatersounddevices.cpp
+++ b/indra/newview/llfloatersounddevices.cpp
@@ -51,7 +51,7 @@ LLFloaterSoundDevices::~LLFloaterSoundDevices()
 }
 
 // virtual
-BOOL LLFloaterSoundDevices::postBuild()
+bool LLFloaterSoundDevices::postBuild()
 {
     LLTransientDockableFloater::postBuild();
 
@@ -65,7 +65,7 @@ BOOL LLFloaterSoundDevices::postBuild()
         getChild<LLUICtrl>("voice_output_device")->setCommitCallback(boost::bind(&LLPanelVoiceDeviceSettings::apply, panel));
         getChild<LLUICtrl>("mic_volume_slider")->setCommitCallback(boost::bind(&LLPanelVoiceDeviceSettings::apply, panel));
     }
-    return TRUE;
+    return true;
 }
 
 //virtual
@@ -75,7 +75,7 @@ void LLFloaterSoundDevices::setDocked(bool docked, bool pop_on_undock/* = true*/
 }
 
 // virtual
-void LLFloaterSoundDevices::setFocus( BOOL b )
+void LLFloaterSoundDevices::setFocus(bool b)
 {
     LLTransientDockableFloater::setFocus(b);
 
diff --git a/indra/newview/llfloatersounddevices.h b/indra/newview/llfloatersounddevices.h
index b68e1c737b..9b21b62747 100644
--- a/indra/newview/llfloatersounddevices.h
+++ b/indra/newview/llfloatersounddevices.h
@@ -39,9 +39,9 @@ public:
     LLFloaterSoundDevices(const LLSD& key);
     ~LLFloaterSoundDevices();
 
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void setDocked(bool docked, bool pop_on_undock = true);
-    /*virtual*/ void setFocus( BOOL b );
+    bool postBuild() override;
+    void setDocked(bool docked, bool pop_on_undock = true) override;
+    void setFocus(bool b) override;
 };
 
 
diff --git a/indra/newview/llfloaterspellchecksettings.cpp b/indra/newview/llfloaterspellchecksettings.cpp
index 47ec3a16fb..735776f7e5 100644
--- a/indra/newview/llfloaterspellchecksettings.cpp
+++ b/indra/newview/llfloaterspellchecksettings.cpp
@@ -61,7 +61,7 @@ void LLFloaterSpellCheckerSettings::draw()
     getChild<LLUICtrl>("spellcheck_remove_btn")->setEnabled(enable_remove);
 }
 
-BOOL LLFloaterSpellCheckerSettings::postBuild(void)
+bool LLFloaterSpellCheckerSettings::postBuild(void)
 {
     gSavedSettings.getControl("SpellCheck")->getSignal()->connect(boost::bind(&LLFloaterSpellCheckerSettings::refreshDictionaries, this, false));
     LLSpellChecker::setSettingsChangeCallback(boost::bind(&LLFloaterSpellCheckerSettings::onSpellCheckSettingsChange, this));
@@ -248,7 +248,7 @@ LLFloaterSpellCheckerImport::LLFloaterSpellCheckerImport(const LLSD& key)
 {
 }
 
-BOOL LLFloaterSpellCheckerImport::postBuild(void)
+bool LLFloaterSpellCheckerImport::postBuild()
 {
     getChild<LLUICtrl>("dictionary_path_browse")->setCommitCallback(boost::bind(&LLFloaterSpellCheckerImport::onBtnBrowse, this));
     getChild<LLUICtrl>("ok_btn")->setCommitCallback(boost::bind(&LLFloaterSpellCheckerImport::onBtnOK, this));
diff --git a/indra/newview/llfloaterspellchecksettings.h b/indra/newview/llfloaterspellchecksettings.h
index ab64625b8d..f05bf68040 100644
--- a/indra/newview/llfloaterspellchecksettings.h
+++ b/indra/newview/llfloaterspellchecksettings.h
@@ -34,10 +34,10 @@ class LLFloaterSpellCheckerSettings : public LLFloater
 public:
     LLFloaterSpellCheckerSettings(const LLSD& key);
 
-    /*virtual*/ void draw();
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void onOpen(const LLSD& key);
-    /*virtual*/ void onClose(bool app_quitting);
+    void draw() override;
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
+    void onClose(bool app_quitting) override;
 
 protected:
     void onBtnImport();
@@ -52,7 +52,7 @@ class LLFloaterSpellCheckerImport : public LLFloater
 public:
     LLFloaterSpellCheckerImport(const LLSD& key);
 
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
 
 protected:
     void onBtnBrowse();
diff --git a/indra/newview/llfloatertelehub.cpp b/indra/newview/llfloatertelehub.cpp
index 20e281f454..e49b5045e3 100644
--- a/indra/newview/llfloatertelehub.cpp
+++ b/indra/newview/llfloatertelehub.cpp
@@ -53,7 +53,7 @@ LLFloaterTelehub::LLFloaterTelehub(const LLSD& key)
 {
 }
 
-BOOL LLFloaterTelehub::postBuild()
+bool LLFloaterTelehub::postBuild()
 {
     gMessageSystem->setHandlerFunc("TelehubInfo", processTelehubInfo);
 
@@ -66,10 +66,10 @@ BOOL LLFloaterTelehub::postBuild()
     if (list)
     {
         // otherwise you can't walk with arrow keys while floater is up
-        list->setAllowKeyboardMovement(FALSE);
+        list->setAllowKeyboardMovement(false);
     }
 
-    return TRUE;
+    return true;
 }
 void LLFloaterTelehub::onOpen(const LLSD& key)
 {
@@ -100,29 +100,29 @@ void LLFloaterTelehub::draw()
 // Per-frame updates, because we don't have a selection manager observer.
 void LLFloaterTelehub::refresh()
 {
-    const BOOL children_ok = TRUE;
+    constexpr bool children_ok = true;
     LLViewerObject* object = mObjectSelection->getFirstRootObject(children_ok);
 
-    BOOL have_selection = (object != NULL);
-    BOOL all_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME );
+    bool have_selection = (object != NULL);
+    bool all_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME );
     getChildView("connect_btn")->setEnabled(have_selection && all_volume);
 
-    BOOL have_telehub = mTelehubObjectID.notNull();
+    bool have_telehub = mTelehubObjectID.notNull();
     getChildView("disconnect_btn")->setEnabled(have_telehub);
 
-    BOOL space_avail = (mNumSpawn < MAX_SPAWNPOINTS_PER_TELEHUB);
+    bool space_avail = (mNumSpawn < MAX_SPAWNPOINTS_PER_TELEHUB);
     getChildView("add_spawn_point_btn")->setEnabled(have_selection && all_volume && space_avail);
 
     LLScrollListCtrl* list = getChild<LLScrollListCtrl>("spawn_points_list");
     if (list)
     {
-        BOOL enable_remove = (list->getFirstSelected() != NULL);
+        bool enable_remove = (list->getFirstSelected() != NULL);
         getChildView("remove_spawn_point_btn")->setEnabled(enable_remove);
     }
 }
 
 // static
-BOOL LLFloaterTelehub::renderBeacons()
+bool LLFloaterTelehub::renderBeacons()
 {
     // only render if we've got a telehub
     LLFloaterTelehub* floater = LLFloaterReg::findTypedInstance<LLFloaterTelehub>("telehubs");
diff --git a/indra/newview/llfloatertelehub.h b/indra/newview/llfloatertelehub.h
index a42ed6e85c..2ae450ba32 100644
--- a/indra/newview/llfloatertelehub.h
+++ b/indra/newview/llfloatertelehub.h
@@ -41,15 +41,15 @@ public:
     LLFloaterTelehub(const LLSD& key);
     ~LLFloaterTelehub();
 
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void onOpen(const LLSD& key);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
 
-    /*virtual*/ void draw();
+    void draw() override;
 
-    static BOOL renderBeacons();
+    static bool renderBeacons();
     static void addBeacons();
 
-    void refresh();
+    void refresh() override;
     void sendTelehubInfoRequest();
 
     void onClickConnect();
diff --git a/indra/newview/llfloatertestinspectors.cpp b/indra/newview/llfloatertestinspectors.cpp
index f6f4324e71..7f8d122435 100644
--- a/indra/newview/llfloatertestinspectors.cpp
+++ b/indra/newview/llfloatertestinspectors.cpp
@@ -45,7 +45,7 @@ LLFloaterTestInspectors::LLFloaterTestInspectors(const LLSD& seed)
 LLFloaterTestInspectors::~LLFloaterTestInspectors()
 {}
 
-BOOL LLFloaterTestInspectors::postBuild()
+bool LLFloaterTestInspectors::postBuild()
 {
     // Test the dummy widget construction code
     getChild<LLUICtrl>("intentionally-not-found")->setEnabled(true);
diff --git a/indra/newview/llfloatertestinspectors.h b/indra/newview/llfloatertestinspectors.h
index 32954df66d..ab634771d5 100644
--- a/indra/newview/llfloatertestinspectors.h
+++ b/indra/newview/llfloatertestinspectors.h
@@ -40,7 +40,7 @@ private:
     LLFloaterTestInspectors(const LLSD& seed);
     ~LLFloaterTestInspectors();
 
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
 
     // Button callback to show
     void showAvatarInspector(LLUICtrl*, const LLSD& avatar_id);
diff --git a/indra/newview/llfloatertools.cpp b/indra/newview/llfloatertools.cpp
index ccecdd89f0..aadc5b9580 100644
--- a/indra/newview/llfloatertools.cpp
+++ b/indra/newview/llfloatertools.cpp
@@ -217,10 +217,10 @@ LLPCode toolData[]={
     LL_PCODE_LEGACY_TREE,
     LL_PCODE_LEGACY_GRASS};
 
-BOOL    LLFloaterTools::postBuild()
+bool    LLFloaterTools::postBuild()
 {
     // Hide until tool selected
-    setVisible(FALSE);
+    setVisible(false);
 
     // Since we constantly show and hide this during drags, don't
     // make sounds on visibility changes.
@@ -243,13 +243,13 @@ BOOL    LLFloaterTools::postBuild()
     mBtnUnlink          = getChild<LLButton>("unlink_btn");
 
     mCheckSelectIndividual  = getChild<LLCheckBoxCtrl>("checkbox edit linked parts");
-    getChild<LLUICtrl>("checkbox edit linked parts")->setValue((BOOL)gSavedSettings.getBOOL("EditLinkedParts"));
+    getChild<LLUICtrl>("checkbox edit linked parts")->setValue((bool)gSavedSettings.getBOOL("EditLinkedParts"));
     mCheckSnapToGrid        = getChild<LLCheckBoxCtrl>("checkbox snap to grid");
-    getChild<LLUICtrl>("checkbox snap to grid")->setValue((BOOL)gSavedSettings.getBOOL("SnapEnabled"));
+    getChild<LLUICtrl>("checkbox snap to grid")->setValue((bool)gSavedSettings.getBOOL("SnapEnabled"));
     mCheckStretchUniform    = getChild<LLCheckBoxCtrl>("checkbox uniform");
-    getChild<LLUICtrl>("checkbox uniform")->setValue((BOOL)gSavedSettings.getBOOL("ScaleUniform"));
+    getChild<LLUICtrl>("checkbox uniform")->setValue((bool)gSavedSettings.getBOOL("ScaleUniform"));
     mCheckStretchTexture    = getChild<LLCheckBoxCtrl>("checkbox stretch textures");
-    getChild<LLUICtrl>("checkbox stretch textures")->setValue((BOOL)gSavedSettings.getBOOL("ScaleStretchTextures"));
+    getChild<LLUICtrl>("checkbox stretch textures")->setValue((bool)gSavedSettings.getBOOL("ScaleStretchTextures"));
     mComboGridMode          = getChild<LLComboBox>("combobox grid mode");
 
     //
@@ -268,13 +268,13 @@ BOOL    LLFloaterTools::postBuild()
         }
     }
     mCheckCopySelection = getChild<LLCheckBoxCtrl>("checkbox copy selection");
-    getChild<LLUICtrl>("checkbox copy selection")->setValue((BOOL)gSavedSettings.getBOOL("CreateToolCopySelection"));
+    getChild<LLUICtrl>("checkbox copy selection")->setValue((bool)gSavedSettings.getBOOL("CreateToolCopySelection"));
     mCheckSticky = getChild<LLCheckBoxCtrl>("checkbox sticky");
-    getChild<LLUICtrl>("checkbox sticky")->setValue((BOOL)gSavedSettings.getBOOL("CreateToolKeepSelected"));
+    getChild<LLUICtrl>("checkbox sticky")->setValue((bool)gSavedSettings.getBOOL("CreateToolKeepSelected"));
     mCheckCopyCenters = getChild<LLCheckBoxCtrl>("checkbox copy centers");
-    getChild<LLUICtrl>("checkbox copy centers")->setValue((BOOL)gSavedSettings.getBOOL("CreateToolCopyCenters"));
+    getChild<LLUICtrl>("checkbox copy centers")->setValue((bool)gSavedSettings.getBOOL("CreateToolCopyCenters"));
     mCheckCopyRotates = getChild<LLCheckBoxCtrl>("checkbox copy rotates");
-    getChild<LLUICtrl>("checkbox copy rotates")->setValue((BOOL)gSavedSettings.getBOOL("CreateToolCopyRotates"));
+    getChild<LLUICtrl>("checkbox copy rotates")->setValue((bool)gSavedSettings.getBOOL("CreateToolCopyRotates"));
 
     mRadioGroupLand         = getChild<LLRadioGroup>("land_radio_group");
     mBtnApplyToSelection    = getChild<LLButton>("button apply to selection");
@@ -290,7 +290,7 @@ BOOL    LLFloaterTools::postBuild()
     if(mTab)
     {
         mTab->setFollows(FOLLOWS_TOP | FOLLOWS_LEFT);
-        mTab->setBorderVisible(FALSE);
+        mTab->setBorderVisible(false);
         mTab->selectFirstTab();
     }
 
@@ -305,7 +305,7 @@ BOOL    LLFloaterTools::postBuild()
 
     sShowObjectCost = gSavedSettings.getBOOL("ShowObjectRenderingCost");
 
-    return TRUE;
+    return true;
 }
 
 // Create the popupview with a dummy center.  It will be moved into place
@@ -365,12 +365,12 @@ LLFloaterTools::LLFloaterTools(const LLSD& key)
 
     mLandImpactsObserver(NULL),
 
-    mDirty(TRUE),
-    mHasSelection(TRUE)
+    mDirty(true),
+    mHasSelection(true)
 {
     gFloaterTools = this;
 
-    setAutoFocus(FALSE);
+    setAutoFocus(false);
     mFactoryMap["General"] = LLCallbackMap(createPanelPermissions, this);//LLPanelPermissions
     mFactoryMap["Object"] = LLCallbackMap(createPanelObject, this);//LLPanelObject
     mFactoryMap["Features"] = LLCallbackMap(createPanelVolume, this);//LLPanelVolume
@@ -425,7 +425,7 @@ void LLFloaterTools::refresh()
     const S32 INFO_WIDTH = getRect().getWidth();
     const S32 INFO_HEIGHT = 384;
     LLRect object_info_rect(0, 0, INFO_WIDTH, -INFO_HEIGHT);
-    BOOL all_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME );
+    bool all_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME );
 
     S32 idx_features = mTab->getPanelIndexByTitle(PANEL_NAMES[PANEL_FEATURES]);
     S32 idx_face = mTab->getPanelIndexByTitle(PANEL_NAMES[PANEL_FACE]);
@@ -560,17 +560,17 @@ void LLFloaterTools::refresh()
 
 void LLFloaterTools::draw()
 {
-    BOOL has_selection = !LLSelectMgr::getInstance()->getSelection()->isEmpty();
+    bool has_selection = !LLSelectMgr::getInstance()->getSelection()->isEmpty();
     if(!has_selection && (mHasSelection != has_selection))
     {
-        mDirty = TRUE;
+        mDirty = true;
     }
     mHasSelection = has_selection;
 
     if (mDirty)
     {
         refresh();
-        mDirty = FALSE;
+        mDirty = false;
     }
 
     //  mCheckSelectIndividual->set(gSavedSettings.getBOOL("EditLinkedParts"));
@@ -579,7 +579,7 @@ void LLFloaterTools::draw()
 
 void LLFloaterTools::dirty()
 {
-    mDirty = TRUE;
+    mDirty = true;
     LLFloaterOpenObject* instance = LLFloaterReg::findTypedInstance<LLFloaterOpenObject>("openobject");
     if (instance) instance->dirty();
 }
@@ -588,12 +588,12 @@ void LLFloaterTools::dirty()
 // floater is closed.
 void LLFloaterTools::resetToolState()
 {
-    gCameraBtnZoom = TRUE;
-    gCameraBtnOrbit = FALSE;
-    gCameraBtnPan = FALSE;
+    gCameraBtnZoom = true;
+    gCameraBtnOrbit = false;
+    gCameraBtnPan = false;
 
-    gGrabBtnSpin = FALSE;
-    gGrabBtnVertical = FALSE;
+    gGrabBtnSpin = false;
+    gGrabBtnVertical = false;
 }
 
 void LLFloaterTools::updatePopup(LLCoordGL center, MASK mask)
@@ -613,7 +613,7 @@ void LLFloaterTools::updatePopup(LLCoordGL center, MASK mask)
     }
 
     // Focus buttons
-    BOOL focus_visible = (  tool == LLToolCamera::getInstance() );
+    bool focus_visible = (  tool == LLToolCamera::getInstance() );
 
     mBtnFocus   ->setToggleState( focus_visible );
 
@@ -647,7 +647,7 @@ void LLFloaterTools::updatePopup(LLCoordGL center, MASK mask)
     getChild<LLUICtrl>("slider zoom")->setValue(gAgentCamera.getCameraZoomFraction() * 0.5f);
 
     // Move buttons
-    BOOL move_visible = (tool == LLToolGrab::getInstance());
+    bool move_visible = (tool == LLToolGrab::getInstance());
 
     if (mBtnMove) mBtnMove  ->setToggleState( move_visible );
 
@@ -672,7 +672,7 @@ void LLFloaterTools::updatePopup(LLCoordGL center, MASK mask)
     }
 
     // Edit buttons
-    BOOL edit_visible = tool == LLToolCompTranslate::getInstance() ||
+    bool edit_visible = tool == LLToolCompTranslate::getInstance() ||
                         tool == LLToolCompRotate::getInstance() ||
                         tool == LLToolCompScale::getInstance() ||
                         tool == LLToolFace::getInstance() ||
@@ -750,7 +750,7 @@ void LLFloaterTools::updatePopup(LLCoordGL center, MASK mask)
     if (mCheckStretchUniformLabel) mCheckStretchUniformLabel->setVisible( edit_visible );
 
     // Create buttons
-    BOOL create_visible = (tool == LLToolCompCreate::getInstance());
+    bool create_visible = (tool == LLToolCompCreate::getInstance());
 
     mBtnCreate  ->setToggleState(   tool == LLToolCompCreate::getInstance() );
 
@@ -760,7 +760,7 @@ void LLFloaterTools::updatePopup(LLCoordGL center, MASK mask)
         // don't highlight any placer button
         for (std::vector<LLButton*>::size_type i = 0; i < mButtons.size(); i++)
         {
-            mButtons[i]->setToggleState(FALSE);
+            mButtons[i]->setToggleState(false);
             mButtons[i]->setVisible( create_visible );
         }
     }
@@ -771,7 +771,7 @@ void LLFloaterTools::updatePopup(LLCoordGL center, MASK mask)
         {
             LLPCode pcode = LLToolPlacer::getObjectType();
             LLPCode button_pcode = toolData[t];
-            BOOL state = (pcode == button_pcode);
+            bool state = (pcode == button_pcode);
             mButtons[t]->setToggleState( state );
             mButtons[t]->setVisible( create_visible );
         }
@@ -786,7 +786,7 @@ void LLFloaterTools::updatePopup(LLCoordGL center, MASK mask)
     if (mCheckCopyRotates && mCheckCopySelection) mCheckCopyRotates->setEnabled( mCheckCopySelection->get() );
 
     // Land buttons
-    BOOL land_visible = (tool == LLToolBrushLand::getInstance() || tool == LLToolSelectLand::getInstance() );
+    bool land_visible = (tool == LLToolBrushLand::getInstance() || tool == LLToolSelectLand::getInstance() );
 
     mCostTextBorder->setVisible(!land_visible);
 
@@ -855,7 +855,7 @@ void LLFloaterTools::updatePopup(LLCoordGL center, MASK mask)
 
 
 // virtual
-BOOL LLFloaterTools::canClose()
+bool LLFloaterTools::canClose()
 {
     // don't close when quitting, so camera will stay put
     return !LLApp::isExiting();
@@ -881,17 +881,17 @@ void LLFloaterTools::onOpen(const LLSD& key)
         // so it won't be getting any layout or visibility updates, update once
         // further updates will come from updateLayout()
         LLCoordGL select_center_screen;
-        MASK    mask = gKeyboard->currentMask(TRUE);
+        MASK    mask = gKeyboard->currentMask(true);
         updatePopup(select_center_screen, mask);
     }
 
-    //gMenuBarView->setItemVisible("BuildTools", TRUE);
+    //gMenuBarView->setItemVisible("BuildTools", true);
 }
 
 // virtual
 void LLFloaterTools::onClose(bool app_quitting)
 {
-    mTab->setVisible(FALSE);
+    mTab->setVisible(false);
 
     LLViewerJoystick::getInstance()->moveAvatar(false);
 
@@ -904,7 +904,7 @@ void LLFloaterTools::onClose(bool app_quitting)
 
     // exit component selection mode
     LLSelectMgr::getInstance()->promoteSelectionToRoot();
-    gSavedSettings.setBOOL("EditLinkedParts", FALSE);
+    gSavedSettings.setBOOL("EditLinkedParts", false);
 
     gViewerWindow->showCursor();
 
@@ -919,7 +919,7 @@ void LLFloaterTools::onClose(bool app_quitting)
     // so manually reset tool to default (pie menu tool)
     LLToolMgr::getInstance()->getCurrentToolset()->selectFirstTool();
 
-    //gMenuBarView->setItemVisible("BuildTools", FALSE);
+    //gMenuBarView->setItemVisible("BuildTools", false);
     LLFloaterReg::hideInstance("media_settings");
 
     // hide the advanced object weights floater
@@ -934,7 +934,7 @@ void LLFloaterTools::onClose(bool app_quitting)
     if(sPreviousFocusOnAvatar)
     {
         sPreviousFocusOnAvatar = false;
-        gAgentCamera.setAllowChangeToFollow(TRUE);
+        gAgentCamera.setAllowChangeToFollow(true);
     }
 }
 
@@ -953,18 +953,18 @@ void commit_radio_group_move(LLUICtrl* ctrl)
     std::string selected = group->getValue().asString();
     if (selected == "radio move")
     {
-        gGrabBtnVertical = FALSE;
-        gGrabBtnSpin = FALSE;
+        gGrabBtnVertical = false;
+        gGrabBtnSpin = false;
     }
     else if (selected == "radio lift")
     {
-        gGrabBtnVertical = TRUE;
-        gGrabBtnSpin = FALSE;
+        gGrabBtnVertical = true;
+        gGrabBtnSpin = false;
     }
     else if (selected == "radio spin")
     {
-        gGrabBtnVertical = FALSE;
-        gGrabBtnSpin = TRUE;
+        gGrabBtnVertical = false;
+        gGrabBtnSpin = true;
     }
 }
 
@@ -974,21 +974,21 @@ void commit_radio_group_focus(LLUICtrl* ctrl)
     std::string selected = group->getValue().asString();
     if (selected == "radio zoom")
     {
-        gCameraBtnZoom = TRUE;
-        gCameraBtnOrbit = FALSE;
-        gCameraBtnPan = FALSE;
+        gCameraBtnZoom = true;
+        gCameraBtnOrbit = false;
+        gCameraBtnPan = false;
     }
     else if (selected == "radio orbit")
     {
-        gCameraBtnZoom = FALSE;
-        gCameraBtnOrbit = TRUE;
-        gCameraBtnPan = FALSE;
+        gCameraBtnZoom = false;
+        gCameraBtnOrbit = true;
+        gCameraBtnPan = false;
     }
     else if (selected == "radio pan")
     {
-        gCameraBtnZoom = FALSE;
-        gCameraBtnOrbit = FALSE;
-        gCameraBtnPan = TRUE;
+        gCameraBtnZoom = false;
+        gCameraBtnOrbit = false;
+        gCameraBtnPan = true;
     }
 }
 
@@ -1074,7 +1074,7 @@ void commit_select_component(void *data)
         gFocusMgr.setKeyboardFocus(NULL);
     }
 
-    BOOL select_individuals = floaterp->mCheckSelectIndividual->get();
+    bool select_individuals = floaterp->mCheckSelectIndividual->get();
     gSavedSettings.setBOOL("EditLinkedParts", select_individuals);
     floaterp->dirty();
 
@@ -1092,7 +1092,7 @@ void commit_select_component(void *data)
 void LLFloaterTools::setObjectType( LLPCode pcode )
 {
     LLToolPlacer::setObjectType( pcode );
-    gSavedSettings.setBOOL("CreateToolCopySelection", FALSE);
+    gSavedSettings.setBOOL("CreateToolCopySelection", false);
     gFocusMgr.setMouseCapture(NULL);
 }
 
diff --git a/indra/newview/llfloatertools.h b/indra/newview/llfloatertools.h
index f6e03afc11..f9c3b401bb 100644
--- a/indra/newview/llfloatertools.h
+++ b/indra/newview/llfloatertools.h
@@ -55,7 +55,7 @@ class LLFloaterTools
 : public LLFloater
 {
 public:
-    virtual BOOL    postBuild();
+    virtual bool    postBuild();
     static  void*   createPanelPermissions(void*    vdata);
     static  void*   createPanelObject(void* vdata);
     static  void*   createPanelVolume(void* vdata);
@@ -67,7 +67,7 @@ public:
     virtual ~LLFloaterTools();
 
     /*virtual*/ void onOpen(const LLSD& key);
-    /*virtual*/ BOOL canClose();
+    /*virtual*/ bool canClose();
     /*virtual*/ void onClose(bool app_quitting);
     /*virtual*/ void draw();
     /*virtual*/ void onFocusReceived();
@@ -181,8 +181,8 @@ public:
     LLObjectSelectionHandle mObjectSelection;
 
 private:
-    BOOL                    mDirty;
-    BOOL                    mHasSelection;
+    bool                    mDirty;
+    bool                    mHasSelection;
 
     std::map<std::string, std::string> mStatusText;
 
diff --git a/indra/newview/llfloatertopobjects.cpp b/indra/newview/llfloatertopobjects.cpp
index c630daa836..64b22c4bb1 100644
--- a/indra/newview/llfloatertopobjects.cpp
+++ b/indra/newview/llfloatertopobjects.cpp
@@ -73,7 +73,7 @@ void LLFloaterTopObjects::show()
 */
 LLFloaterTopObjects::LLFloaterTopObjects(const LLSD& key)
 :   LLFloater(key),
-    mInitialized(FALSE),
+    mInitialized(false),
     mtotalScore(0.f)
 {
     mCommitCallbackRegistrar.add("TopObjects.ShowBeacon",       boost::bind(&LLFloaterTopObjects::onClickShowBeacon, this));
@@ -93,12 +93,12 @@ LLFloaterTopObjects::~LLFloaterTopObjects()
 }
 
 // virtual
-BOOL LLFloaterTopObjects::postBuild()
+bool LLFloaterTopObjects::postBuild()
 {
     mObjectsScrollList = getChild<LLScrollListCtrl>("objects_list");
-    mObjectsScrollList->setFocus(TRUE);
+    mObjectsScrollList->setFocus(true);
     mObjectsScrollList->setDoubleClickCallback(onDoubleClickObjectsList, this);
-    mObjectsScrollList->setCommitOnSelectionChange(TRUE);
+    mObjectsScrollList->setCommitOnSelectionChange(true);
     mObjectsScrollList->setCommitCallback(boost::bind(&LLFloaterTopObjects::onSelectionChanged, this));
 
     setDefaultBtn("show_beacon_btn");
@@ -107,7 +107,7 @@ BOOL LLFloaterTopObjects::postBuild()
     mFlags = 0;
     mFilter.clear();
 
-    return TRUE;
+    return true;
 }
 // static
 void LLFloaterTopObjects::setMode(U32 mode)
@@ -129,7 +129,7 @@ void LLFloaterTopObjects::handle_land_reply(LLMessageSystem* msg, void** data)
         if (!instance->mObjectListIDs.size() && !instance->mInitialized)
         {
             instance->onRefresh();
-            instance->mInitialized = TRUE;
+            instance->mInitialized = true;
         }
     }
     else
diff --git a/indra/newview/llfloatertopobjects.h b/indra/newview/llfloatertopobjects.h
index a3f987f2e1..5ceace6d01 100644
--- a/indra/newview/llfloatertopobjects.h
+++ b/indra/newview/llfloatertopobjects.h
@@ -62,7 +62,7 @@ public:
 
     void clearList();
     void updateSelectionInfo();
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     void onRefresh();
 
@@ -104,7 +104,7 @@ private:
     U32 mFlags;
     std::string mFilter;
 
-    BOOL mInitialized;
+    bool mInitialized;
 
     F32 mtotalScore;
 
diff --git a/indra/newview/llfloatertos.cpp b/indra/newview/llfloatertos.cpp
index 241d44ddf8..63ba51e559 100644
--- a/indra/newview/llfloatertos.cpp
+++ b/indra/newview/llfloatertos.cpp
@@ -56,7 +56,7 @@ LLFloaterTOS::LLFloaterTOS(const LLSD& data)
 {
 }
 
-BOOL LLFloaterTOS::postBuild()
+bool LLFloaterTOS::postBuild()
 {
     childSetAction("Continue", onContinue, this);
     childSetAction("Cancel", onCancel, this);
@@ -66,11 +66,11 @@ BOOL LLFloaterTOS::postBuild()
     {
         // this displays the critical message
         LLUICtrl *tos_text = getChild<LLUICtrl>("tos_text");
-        tos_text->setEnabled( FALSE );
-        tos_text->setFocus(TRUE);
+        tos_text->setEnabled(false);
+        tos_text->setFocus(true);
         tos_text->setValue(LLSD(mMessage));
 
-        return TRUE;
+        return true;
     }
 
     // disable Agree to TOS radio button until the page has fully loaded
@@ -78,7 +78,7 @@ BOOL LLFloaterTOS::postBuild()
 
     // hide the SL text widget if we're displaying TOS with using a browser widget.
     LLUICtrl *editor = getChild<LLUICtrl>("tos_text");
-    editor->setVisible( FALSE );
+    editor->setVisible(false);
 
     LLMediaCtrl* web_browser = getChild<LLMediaCtrl>("tos_html");
     if ( web_browser )
@@ -113,7 +113,7 @@ BOOL LLFloaterTOS::postBuild()
 #endif
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterTOS::setSiteIsAlive( bool alive )
diff --git a/indra/newview/llfloatertos.h b/indra/newview/llfloatertos.h
index b4f08be00b..3bec4da58d 100644
--- a/indra/newview/llfloatertos.h
+++ b/indra/newview/llfloatertos.h
@@ -47,9 +47,9 @@ public:
     LLFloaterTOS(const LLSD& data);
     virtual ~LLFloaterTOS();
 
-    BOOL postBuild();
+    bool postBuild() override;
 
-    virtual void draw();
+    void draw() override;
 
     static void     updateAgree( LLUICtrl *, void* userdata );
     static void     onContinue( void* userdata );
@@ -60,7 +60,7 @@ public:
     void            updateAgreeEnabled(bool enabled);
 
     // inherited from LLViewerMediaObserver
-    /*virtual*/ void handleMediaEvent(LLPluginClassMedia* self, EMediaEvent event);
+    void handleMediaEvent(LLPluginClassMedia* self, EMediaEvent event) override;
 
 private:
     static void testSiteIsAliveCoro(LLHandle<LLFloater> handle, std::string url);
@@ -70,8 +70,6 @@ private:
     bool            mSiteAlive;
     bool            mRealNavigateBegun;
     std::string     mReplyPumpName;
-
-
 };
 
 #endif // LL_LLFLOATERTOS_H
diff --git a/indra/newview/llfloatertoybox.cpp b/indra/newview/llfloatertoybox.cpp
index 635d1e2bc4..f6257dbd3d 100644
--- a/indra/newview/llfloatertoybox.cpp
+++ b/indra/newview/llfloatertoybox.cpp
@@ -57,7 +57,7 @@ bool compare_localized_command_labels(LLCommand * cmd1, LLCommand * cmd2)
     return (lab1 < lab2);
 }
 
-BOOL LLFloaterToybox::postBuild()
+bool LLFloaterToybox::postBuild()
 {
     mToolBar = getChild<LLToolBar>("toybox_toolbar");
 
@@ -94,7 +94,7 @@ BOOL LLFloaterToybox::postBuild()
         mToolBar->addCommand((*it)->id());
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterToybox::draw()
@@ -151,7 +151,7 @@ void LLFloaterToybox::onBtnClearAll()
     LLNotificationsUtil::add("ConfirmClearAllToybox");
 }
 
-BOOL LLFloaterToybox::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLFloaterToybox::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
     EDragAndDropType cargo_type,
     void* cargo_data,
     EAcceptance* accept,
diff --git a/indra/newview/llfloatertoybox.h b/indra/newview/llfloatertoybox.h
index fa7ef51703..4fe723c8cb 100644
--- a/indra/newview/llfloatertoybox.h
+++ b/indra/newview/llfloatertoybox.h
@@ -41,13 +41,13 @@ public:
     virtual ~LLFloaterToybox();
 
     // virtuals
-    BOOL postBuild();
-    void draw();
-    /*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    bool postBuild() override;
+    void draw() override;
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
         EDragAndDropType cargo_type,
         void* cargo_data,
         EAcceptance* accept,
-        std::string& tooltip_msg);
+        std::string& tooltip_msg) override;
 
 protected:
     void onBtnClearAll();
diff --git a/indra/newview/llfloatertranslationsettings.cpp b/indra/newview/llfloatertranslationsettings.cpp
index 61c4e05183..71fd7fbb41 100644
--- a/indra/newview/llfloatertranslationsettings.cpp
+++ b/indra/newview/llfloatertranslationsettings.cpp
@@ -52,7 +52,7 @@ LLFloaterTranslationSettings::LLFloaterTranslationSettings(const LLSD& key)
 }
 
 // virtual
-BOOL LLFloaterTranslationSettings::postBuild()
+bool LLFloaterTranslationSettings::postBuild()
 {
     mMachineTranslationCB = getChild<LLCheckBoxCtrl>("translate_chat_checkbox");
     mLanguageCombo = getChild<LLComboBox>("translate_language_combo");
@@ -106,15 +106,15 @@ BOOL LLFloaterTranslationSettings::postBuild()
                                                });
 
     center();
-    return TRUE;
+    return true;
 }
 
 // virtual
 void LLFloaterTranslationSettings::onOpen(const LLSD& key)
 {
     mMachineTranslationCB->setValue(gSavedSettings.getBOOL("TranslateChat"));
-    mLanguageCombo->setSelectedByValue(gSavedSettings.getString("TranslateLanguage"), TRUE);
-    mTranslationServiceRadioGroup->setSelectedByValue(gSavedSettings.getString("TranslationService"), TRUE);
+    mLanguageCombo->setSelectedByValue(gSavedSettings.getString("TranslateLanguage"), true);
+    mTranslationServiceRadioGroup->setSelectedByValue(gSavedSettings.getString("TranslationService"), true);
 
     LLSD azure_key = gSavedSettings.getLLSD("AzureTranslateAPIKey");
     if (azure_key.isMap() && !azure_key["id"].asString().empty())
@@ -135,22 +135,22 @@ void LLFloaterTranslationSettings::onOpen(const LLSD& key)
     }
     else
     {
-        mAzureAPIKeyEditor->setTentative(TRUE);
+        mAzureAPIKeyEditor->setTentative(true);
         mAzureAPIRegionEditor->setTentative(true);
-        mAzureKeyVerified = FALSE;
+        mAzureKeyVerified = false;
     }
 
     std::string google_key = gSavedSettings.getString("GoogleTranslateAPIKey");
     if (!google_key.empty())
     {
         mGoogleAPIKeyEditor->setText(google_key);
-        mGoogleAPIKeyEditor->setTentative(FALSE);
+        mGoogleAPIKeyEditor->setTentative(false);
         verifyKey(LLTranslate::SERVICE_GOOGLE, google_key, false);
     }
     else
     {
-        mGoogleAPIKeyEditor->setTentative(TRUE);
-        mGoogleKeyVerified = FALSE;
+        mGoogleAPIKeyEditor->setTentative(true);
+        mGoogleKeyVerified = false;
     }
 
     LLSD deepl_key = gSavedSettings.getLLSD("DeepLTranslateAPIKey");
@@ -163,8 +163,8 @@ void LLFloaterTranslationSettings::onOpen(const LLSD& key)
     }
     else
     {
-        mDeepLAPIKeyEditor->setTentative(TRUE);
-        mDeepLKeyVerified = FALSE;
+        mDeepLAPIKeyEditor->setTentative(true);
+        mDeepLKeyVerified = false;
     }
 
     updateControlsEnabledState();
@@ -340,7 +340,7 @@ void LLFloaterTranslationSettings::onEditorFocused(LLFocusableElement* control)
         if (editor->getTentative())
         {
             editor->setText(LLStringUtil::null);
-            editor->setTentative(FALSE);
+            editor->setTentative(false);
         }
     }
 }
diff --git a/indra/newview/llfloatertranslationsettings.h b/indra/newview/llfloatertranslationsettings.h
index 1801184c7e..3995059900 100644
--- a/indra/newview/llfloatertranslationsettings.h
+++ b/indra/newview/llfloatertranslationsettings.h
@@ -39,13 +39,13 @@ class LLFloaterTranslationSettings : public LLFloater
 {
 public:
     LLFloaterTranslationSettings(const LLSD& key);
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void onOpen(const LLSD& key);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
 
     void setAzureVerified(bool ok, bool alert, S32 status);
     void setGoogleVerified(bool ok, bool alert, S32 status);
     void setDeepLVerified(bool ok, bool alert, S32 status);
-    void onClose(bool app_quitting);
+    void onClose(bool app_quitting) override;
 
 private:
     std::string getSelectedService() const;
diff --git a/indra/newview/llfloateruipreview.cpp b/indra/newview/llfloateruipreview.cpp
index b2de352793..69459a4e98 100644
--- a/indra/newview/llfloateruipreview.cpp
+++ b/indra/newview/llfloateruipreview.cpp
@@ -139,23 +139,23 @@ public:
     virtual ~LLFloaterUIPreview();
 
     std::string getLocStr(S32 ID);                          // fetches the localization string based on what is selected in the drop-down menu
-    void displayFloater(BOOL click, S32 ID);            // needs to be public so live file can call it when it finds an update
+    void displayFloater(bool click, S32 ID);            // needs to be public so live file can call it when it finds an update
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onClose(bool app_quitting);
 
     void refreshList();                                     // refresh list (empty it out and fill it up from scratch)
     void addFloaterEntry(const std::string& path);          // add a single file's entry to the list of floaters
 
-    static BOOL containerType(LLView* viewp);               // check if the element is a container type and tree traverses need to look at its children
+    static bool containerType(LLView* viewp);               // check if the element is a container type and tree traverses need to look at its children
 
 public:
     LLPreviewedFloater*         mDisplayedFloater;          // the floater which is currently being displayed
     LLPreviewedFloater*         mDisplayedFloater_2;            // the floater which is currently being displayed
     LLGUIPreviewLiveFile*       mLiveFile;                  // live file for checking for updates to the currently-displayed XML file
     LLOverlapPanel*             mOverlapPanel;              // custom overlapping elements panel
-    // BOOL                     mHighlightingDiffs;         // bool for whether localization diffs are being highlighted or not
-    BOOL                        mHighlightingOverlaps;      // bool for whether overlapping elements are being highlighted
+    // bool                     mHighlightingDiffs;         // bool for whether localization diffs are being highlighted or not
+    bool                        mHighlightingOverlaps;      // bool for whether overlapping elements are being highlighted
 
     // typedef std::map<std::string,std::pair<std::list<std::string>,std::list<std::string> > > DiffMap; // this version copies the lists etc., and thus is bad memory-wise
     typedef std::list<std::string> StringList;
@@ -196,11 +196,11 @@ private:
     void highlightChangedElements();                                // look up the list of elements to highlight and highlight them in the current floater
     void highlightChangedFiles();                                   // look up the list of changed files to highlight and highlight them in the scroll list
     void findOverlapsInChildren(LLView* parent);                    // fill the map below with element overlap information
-    static BOOL overlapIgnorable(LLView* viewp);                    // check it the element can be ignored for overlap/localization purposes
+    static bool overlapIgnorable(LLView* viewp);                    // check it the element can be ignored for overlap/localization purposes
 
     // check if two elements overlap using their rectangles
     // used instead of llrect functions because by adding a few pixels of leeway I can cut down drastically on the number of overlaps
-    BOOL elementOverlap(LLView* view1, LLView* view2);
+    bool elementOverlap(LLView* view1, LLView* view2);
 
     // Button/drop-down action listeners (self explanatory)
     void onClickDisplayFloater(S32 id);
@@ -244,7 +244,7 @@ public:
     virtual ~LLGUIPreviewLiveFile();
     LLFloaterUIPreview* mParent;
     LLFadeEventTimer* mFadeTimer;   // timer for fade-to-yellow-and-back effect to warn that file has been reloaded
-    BOOL mFirstFade;                // setting this avoids showing the fade reload warning on first load
+    bool mFirstFade;                // setting this avoids showing the fade reload warning on first load
     std::string mFileName;
 protected:
     bool loadFile();
@@ -255,10 +255,10 @@ class LLFadeEventTimer : public LLEventTimer
 {
 public:
     LLFadeEventTimer(F32 refresh, LLGUIPreviewLiveFile* parent);
-    BOOL tick();
+    bool tick();
     LLGUIPreviewLiveFile* mParent;
 private:
-    BOOL mFadingOut;            // fades in then out; this is toggled in between
+    bool mFadingOut;            // fades in then out; this is toggled in between
     LLColor4 mOriginalColor;    // original color; color is reset to this after fade is coimplete
 };
 
@@ -274,9 +274,9 @@ public:
     }
 
     virtual void draw();
-    BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-    BOOL handleToolTip(S32 x, S32 y, MASK mask);
-    BOOL selectElement(LLView* parent, int x, int y, int depth);    // select element to display its overlappers
+    bool handleRightMouseDown(S32 x, S32 y, MASK mask);
+    bool handleToolTip(S32 x, S32 y, MASK mask);
+    bool selectElement(LLView* parent, int x, int y, int depth);    // select element to display its overlappers
 
     LLFloaterUIPreview* mFloaterUIPreview;
 
@@ -312,7 +312,7 @@ LLLocalizationResetForcer::~LLLocalizationResetForcer()
 LLGUIPreviewLiveFile::LLGUIPreviewLiveFile(std::string path, std::string name, LLFloaterUIPreview* parent)
         : mFileName(name),
         mParent(parent),
-        mFirstFade(TRUE),
+        mFirstFade(true),
         mFadeTimer(NULL),
         LLLiveFile(path, 1.0)
 {}
@@ -330,10 +330,10 @@ LLGUIPreviewLiveFile::~LLGUIPreviewLiveFile()
 // Live file load
 bool LLGUIPreviewLiveFile::loadFile()
 {
-    mParent->displayFloater(FALSE,1);   // redisplay the floater
-    if(mFirstFade)  // only fade if it wasn't just clicked on; can't use "clicked" BOOL below because of an oddity with setting LLLiveFile initial state
+    mParent->displayFloater(false,1);   // redisplay the floater
+    if(mFirstFade)  // only fade if it wasn't just clicked on; can't use "clicked" bool below because of an oddity with setting LLLiveFile initial state
     {
-        mFirstFade = FALSE;
+        mFirstFade = false;
     }
     else
     {
@@ -349,24 +349,24 @@ bool LLGUIPreviewLiveFile::loadFile()
 // Initialize fade event timer
 LLFadeEventTimer::LLFadeEventTimer(F32 refresh, LLGUIPreviewLiveFile* parent)
     : mParent(parent),
-    mFadingOut(TRUE),
+    mFadingOut(true),
     LLEventTimer(refresh)
 {
     mOriginalColor = mParent->mParent->mDisplayedFloater->getBackgroundColor();
 }
 
 // Single tick of fade event timer: increment the color
-BOOL LLFadeEventTimer::tick()
+bool LLFadeEventTimer::tick()
 {
     float diff = 0.04f;
-    if(TRUE == mFadingOut)  // set fade for in/out color direction
+    if(true == mFadingOut)  // set fade for in/out color direction
     {
         diff = -diff;
     }
 
     if(NULL == mParent) // no more need to tick, so suicide
     {
-        return TRUE;
+        return true;
     }
 
     // Set up colors
@@ -386,10 +386,10 @@ BOOL LLFadeEventTimer::tick()
 
     if(bg_color[2] <= 0.0f) // end of fade out, start fading in
     {
-        mFadingOut = FALSE;
+        mFadingOut = false;
     }
 
-    return FALSE;
+    return false;
 }
 
 // Constructor
@@ -398,8 +398,8 @@ LLFloaterUIPreview::LLFloaterUIPreview(const LLSD& key)
     mDisplayedFloater(NULL),
     mDisplayedFloater_2(NULL),
     mLiveFile(NULL),
-    // sHighlightingDiffs(FALSE),
-    mHighlightingOverlaps(FALSE),
+    // sHighlightingDiffs(false),
+    mHighlightingOverlaps(false),
     mLastDisplayedX(0),
     mLastDisplayedY(0)
 {
@@ -424,7 +424,7 @@ LLFloaterUIPreview::~LLFloaterUIPreview()
 }
 
 // Perform post-build setup (defined in superclass)
-BOOL LLFloaterUIPreview::postBuild()
+bool LLFloaterUIPreview::postBuild()
 {
     LLPanel* main_panel_tmp = getChild<LLPanel>("main_panel");              // get a pointer to the main panel in order to...
     mFileList = main_panel_tmp->getChild<LLScrollListCtrl>("name_list");    // save pointer to file list
@@ -482,8 +482,8 @@ BOOL LLFloaterUIPreview::postBuild()
     mDelim = gDirUtilp->getDirDelimiter();  // initialize delimiter to dir sep slash
 
     // refresh list of available languages (EN will still be default)
-    BOOL found = TRUE;
-    BOOL found_en_us = FALSE;
+    bool found = true;
+    bool found_en_us = false;
     std::string language_directory;
     std::string xui_dir = get_xui_dir();    // directory containing localizations -- don't forget trailing delim
     mLanguageSelection->removeall();                                                                                // clear out anything temporarily in list from XML
@@ -503,7 +503,7 @@ BOOL LLFloaterUIPreview::postBuild()
             {
                 if(!strncmp("en",language_directory.c_str(),5))                                                 // remember if we've seen en, so we can make it default
                 {
-                    found_en_us = TRUE;
+                    found_en_us = true;
                 }
                 else
                 {
@@ -528,7 +528,7 @@ BOOL LLFloaterUIPreview::postBuild()
 
     refreshList();                                                                                                  // refresh the list of available floaters
 
-    return TRUE;
+    return true;
 }
 
 // Callback for language combo box selection: refresh current floater when you change languages
@@ -542,7 +542,7 @@ void LLFloaterUIPreview::onLanguageComboSelect(LLUICtrl* ctrl)
         if(mDisplayedFloater)
         {
             onClickCloseDisplayedFloater(PRIMARY_FLOATER);
-            displayFloater(TRUE,1);
+            displayFloater(true,1);
         }
     }
     else
@@ -550,7 +550,7 @@ void LLFloaterUIPreview::onLanguageComboSelect(LLUICtrl* ctrl)
         if(mDisplayedFloater_2)
         {
             onClickCloseDisplayedFloater(PRIMARY_FLOATER);
-            displayFloater(TRUE,2); // *TODO: make take an arg
+            displayFloater(true,2); // *TODO: make take an arg
         }
     }
 
@@ -642,7 +642,7 @@ void LLFloaterUIPreview::refreshList()
     // Note: the mask doesn't seem to accept regular expressions, so there need to be two directory searches here
     mFileList->clearRows();     // empty list
     std::string name;
-    BOOL found = TRUE;
+    bool found = true;
 
     LLDirIterator floater_iter(getLocalizedDirectory(), "floater_*.xml");
     while(found)                // for every floater file that matches the pattern
@@ -652,7 +652,7 @@ void LLFloaterUIPreview::refreshList()
             addFloaterEntry(name.c_str());  // and add it to the list (file name only; localization code takes care of rest of path)
         }
     }
-    found = TRUE;
+    found = true;
 
     LLDirIterator inspect_iter(getLocalizedDirectory(), "inspect_*.xml");
     while(found)                // for every inspector file that matches the pattern
@@ -662,7 +662,7 @@ void LLFloaterUIPreview::refreshList()
             addFloaterEntry(name.c_str());  // and add it to the list (file name only; localization code takes care of rest of path)
         }
     }
-    found = TRUE;
+    found = true;
 
     LLDirIterator menu_iter(getLocalizedDirectory(), "menu_*.xml");
     while(found)                // for every menu file that matches the pattern
@@ -672,7 +672,7 @@ void LLFloaterUIPreview::refreshList()
             addFloaterEntry(name.c_str());  // and add it to the list (file name only; localization code takes care of rest of path)
         }
     }
-    found = TRUE;
+    found = true;
 
     LLDirIterator panel_iter(getLocalizedDirectory(), "panel_*.xml");
     while(found)                // for every panel file that matches the pattern
@@ -682,7 +682,7 @@ void LLFloaterUIPreview::refreshList()
             addFloaterEntry(name.c_str());  // and add it to the list (file name only; localization code takes care of rest of path)
         }
     }
-    found = TRUE;
+    found = true;
 
     LLDirIterator sidepanel_iter(getLocalizedDirectory(), "sidepanel_*.xml");
     while(found)                // for every sidepanel file that matches the pattern
@@ -715,7 +715,7 @@ void LLFloaterUIPreview::addFloaterEntry(const std::string& path)
     // Get name of floater:
     LLXmlTree xml_tree;
     std::string full_path = getLocalizedDirectory() + path;         // get full path
-    BOOL success = xml_tree.parseFile(full_path.c_str(), TRUE);     // parse xml
+    bool success = xml_tree.parseFile(full_path.c_str(), true);     // parse xml
     std::string entry_name;
     std::string entry_title;
     if(success)
@@ -772,13 +772,13 @@ void LLFloaterUIPreview::addFloaterEntry(const std::string& path)
 // Respond to button click to display/refresh currently-selected floater
 void LLFloaterUIPreview::onClickDisplayFloater(S32 caller_id)
 {
-    displayFloater(TRUE, caller_id);
+    displayFloater(true, caller_id);
 }
 
 // Saves the current floater/panel
 void LLFloaterUIPreview::onClickSaveFloater(S32 caller_id)
 {
-    displayFloater(TRUE, caller_id);
+    displayFloater(true, caller_id);
     popupAndPrintWarning("Save-floater functionality removed, use XML schema to clean up XUI files");
 }
 
@@ -790,7 +790,7 @@ void LLFloaterUIPreview::onClickSaveAll(S32 caller_id)
     for (int index = 0; index < listSize; index++)
     {
         mFileList->selectNthItem(index);
-        displayFloater(TRUE, caller_id);
+        displayFloater(true, caller_id);
     }
     popupAndPrintWarning("Save-floater functionality removed, use XML schema to clean up XUI files");
 }
@@ -798,7 +798,7 @@ void LLFloaterUIPreview::onClickSaveAll(S32 caller_id)
 // Actually display the floater
 // Only set up a new live file if this came from a click (at which point there should be no existing live file), rather than from the live file's update itself;
 // otherwise, we get an infinite loop as the live file keeps recreating itself.  That means this function is generally called twice.
-void LLFloaterUIPreview::displayFloater(BOOL click, S32 ID)
+void LLFloaterUIPreview::displayFloater(bool click, S32 ID)
 {
     // Convince UI that we're in a different language (the one selected on the drop-down menu)
     LLLocalizationResetForcer reset_forcer(this, ID);                       // save old language in reset forcer object (to be reset upon destruction when it falls out of scope)
@@ -806,7 +806,7 @@ void LLFloaterUIPreview::displayFloater(BOOL click, S32 ID)
     LLPreviewedFloater** floaterp = (ID == 1 ? &(mDisplayedFloater) : &(mDisplayedFloater_2));
     if(ID == 1)
     {
-        BOOL floater_already_open = mDisplayedFloater != NULL;
+        bool floater_already_open = mDisplayedFloater != NULL;
         if(floater_already_open)                                            // if we are already displaying a floater
         {
             mLastDisplayedX = mDisplayedFloater->calcScreenRect().mLeft;    // save floater's last known position to put the new one there
@@ -860,7 +860,7 @@ void LLFloaterUIPreview::displayFloater(BOOL click, S32 ID)
         panel->buildFromFile(path);                                     // build it
         panel->setOrigin(2,2);                                          // reset its origin point so it's not offset by -left or other XUI attributes
         (*floaterp)->setTitle(path);                                    // use the file name as its title, since panels have no guaranteed meaningful name attribute
-        panel->setUseBoundingRect(TRUE);                                // enable the use of its outer bounding rect (normally disabled because it's O(n) on the number of sub-elements)
+        panel->setUseBoundingRect(true);                                // enable the use of its outer bounding rect (normally disabled because it's O(n) on the number of sub-elements)
         panel->updateBoundingRect();                                    // update bounding rect
         LLRect bounding_rect = panel->getBoundingRect();                // get the bounding rect
         LLRect new_rect = panel->getRect();                             // get the panel's rect
@@ -880,15 +880,15 @@ void LLFloaterUIPreview::displayFloater(BOOL click, S32 ID)
 
     // *HACK: Remove ability to close it; if you close it, its destructor gets called, but we don't know it's null and try to delete it again,
     // resulting in a double free
-    (*floaterp)->setCanClose(FALSE);
+    (*floaterp)->setCanClose(false);
 
     if(ID == 1)
     {
-        mCloseOtherButton->setEnabled(TRUE);    // enable my floater's close button
+        mCloseOtherButton->setEnabled(true);    // enable my floater's close button
     }
     else
     {
-        mCloseOtherButton_2->setEnabled(TRUE);
+        mCloseOtherButton_2->setEnabled(true);
     }
 
     // Add localization to title so user knows whether it's localized or defaulted to en
@@ -921,7 +921,7 @@ void LLFloaterUIPreview::displayFloater(BOOL click, S32 ID)
 
     if(ID == 1)
     {
-        mToggleOverlapButton->setEnabled(TRUE);
+        mToggleOverlapButton->setEnabled(true);
     }
 
     if(LLView::sHighlightingDiffs && click && ID == 1)
@@ -1035,7 +1035,7 @@ void LLFloaterUIPreview::getExecutablePath(const std::vector<std::string>& filen
 #if LL_DARWIN
     // on Mac, if it's an application bundle, figure out the actual path from the Info.plist file
     CFStringRef path_cfstr = CFStringCreateWithCString(kCFAllocatorDefault, chosen_path.c_str(), kCFStringEncodingMacRoman);        // get path as a CFStringRef
-    CFURLRef path_url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, path_cfstr, kCFURLPOSIXPathStyle, TRUE);         // turn it into a CFURLRef
+    CFURLRef path_url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, path_cfstr, kCFURLPOSIXPathStyle, true);         // turn it into a CFURLRef
     CFBundleRef chosen_bundle = CFBundleCreate(kCFAllocatorDefault, path_url);                                              // get a handle for the bundle
     if(NULL != chosen_bundle)
     {
@@ -1114,13 +1114,13 @@ void LLFloaterUIPreview::onClickToggleDiffHighlighting()
     {
         // Get the file and make sure it exists
         std::string path_in_textfield = mDiffPathTextBox->getText();    // get file path
-        BOOL error = FALSE;
+        bool error = false;
 
         if(std::string("") == path_in_textfield)                                    // check for blank file
         {
             std::string warning = "Unable to highlight differences because no file was provided; fill in the relevant text field";
             popupAndPrintWarning(warning);
-            error = TRUE;
+            error = true;
         }
 
         llstat dummy;
@@ -1128,13 +1128,13 @@ void LLFloaterUIPreview::onClickToggleDiffHighlighting()
         {
             std::string warning = std::string("Unable to highlight differences because an invalid path to a difference file was provided:\"") + path_in_textfield + "\"";
             popupAndPrintWarning(warning);
-            error = TRUE;
+            error = true;
         }
 
         // Build a list of changed elements as given by the XML
         std::list<std::string> changed_element_names;
         LLXmlTree xml_tree;
-        BOOL success = xml_tree.parseFile(path_in_textfield.c_str(), TRUE);
+        bool success = xml_tree.parseFile(path_in_textfield.c_str(), true);
 
         if(success && !error)
         {
@@ -1164,7 +1164,7 @@ void LLFloaterUIPreview::onClickToggleDiffHighlighting()
                     {
                         std::string warning = std::string("Child was neither a file or an error, but rather the following:\"") + std::string(child->getName()) + "\"";
                         popupAndPrintWarning(warning);
-                        error = TRUE;
+                        error = true;
                         break;
                     }
                 }
@@ -1173,19 +1173,19 @@ void LLFloaterUIPreview::onClickToggleDiffHighlighting()
             {
                 std::string warning = std::string("Root node not named XuiDelta:\"") + path_in_textfield + "\"";
                 popupAndPrintWarning(warning);
-                error = TRUE;
+                error = true;
             }
         }
         else if(!error)
         {
             std::string warning = std::string("Unable to create tree from XML:\"") + path_in_textfield + "\"";
             popupAndPrintWarning(warning);
-            error = TRUE;
+            error = true;
         }
 
         if(error)   // if we encountered an error, reset the button to off
         {
-            mToggleHighlightButton->setToggleState(FALSE);
+            mToggleHighlightButton->setToggleState(false);
         }
         else        // only toggle if we didn't encounter an error
         {
@@ -1259,17 +1259,17 @@ void LLFloaterUIPreview::highlightChangedElements()
         boost::char_separator<char> sep(".");
         tokenizer tokens(*iter, sep);
         tokenizer::iterator token_iter;
-        BOOL failed = FALSE;
+        bool failed = false;
         for(token_iter = tokens.begin(); token_iter != tokens.end(); ++token_iter)
         {
-            element = element->findChild<LLView>(*token_iter,FALSE);    // try to find element: don't recur, and don't create if missing
+            element = element->findChild<LLView>(*token_iter,false);    // try to find element: don't recur, and don't create if missing
 
             // if we still didn't find it...
             if(NULL == element)
             {
                 LL_INFOS() << "Unable to find element in XuiDelta file named \"" << *iter << "\" in file \"" << mLiveFile->mFileName <<
                             "\". The element may no longer exist, the path may be incorrect, or it may not be a non-displayable element (not an LLView) such as a \"string\" type." << LL_ENDL;
-                failed = TRUE;
+                failed = true;
                 break;
             }
         }
@@ -1302,10 +1302,10 @@ void LLFloaterUIPreview::highlightChangedFiles()
 {
     for(DiffMap::iterator iter = mDiffsMap.begin(); iter != mDiffsMap.end(); ++iter)    // for every file listed in diffs
     {
-        LLScrollListItem* item = mFileList->getItemByLabel(std::string(iter->first), FALSE, 1);
+        LLScrollListItem* item = mFileList->getItemByLabel(std::string(iter->first), false, 1);
         if(item)
         {
-            item->setHighlighted(TRUE);
+            item->setHighlighted(true);
         }
     }
 }
@@ -1315,8 +1315,8 @@ void LLFloaterUIPreview::onClickCloseDisplayedFloater(S32 caller_id)
 {
     if(caller_id == PRIMARY_FLOATER)
     {
-        mCloseOtherButton->setEnabled(FALSE);
-        mToggleOverlapButton->setEnabled(FALSE);
+        mCloseOtherButton->setEnabled(false);
+        mToggleOverlapButton->setEnabled(false);
 
         if(mDisplayedFloater)
         {
@@ -1343,7 +1343,7 @@ void LLFloaterUIPreview::onClickCloseDisplayedFloater(S32 caller_id)
     }
     else
     {
-        mCloseOtherButton_2->setEnabled(FALSE);
+        mCloseOtherButton_2->setEnabled(false);
         delete mDisplayedFloater_2;
         mDisplayedFloater_2 = NULL;
     }
@@ -1370,7 +1370,7 @@ void append_view_tooltip(LLView* tooltip_view, std::string *tooltip_msg)
     tooltip_msg->append( msg );
 }
 
-BOOL LLPreviewedFloater::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLPreviewedFloater::handleToolTip(S32 x, S32 y, MASK mask)
 {
     if (!sShowRectangles)
     {
@@ -1414,13 +1414,13 @@ BOOL LLPreviewedFloater::handleToolTip(S32 x, S32 y, MASK mask)
     LLToolTipMgr::instance().show(LLToolTip::Params()
         .message(tooltip_msg)
         .max_width(400));
-    return TRUE;
+    return true;
 }
 
-BOOL LLPreviewedFloater::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLPreviewedFloater::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     selectElement(this,x,y,0);
-    return TRUE;
+    return true;
 }
 
 // *NOTE: In order to hide all of the overlapping elements of the selected element so as to see it in context, here is what you would need to do:
@@ -1428,15 +1428,15 @@ BOOL LLPreviewedFloater::handleRightMouseDown(S32 x, S32 y, MASK mask)
 // what you've really selected is a list of elements: the one you clicked on and everything that overlaps it.
 // -The user then selects one of the elements from this list the overlap panel (click handling to the overlap panel would have to be added).
 //  This becomes the final selection (as opposed to the intermediate selection that was just made).
-// -Everything else that is currently displayed on the overlap panel should be hidden from view in the previewed floater itself (setVisible(FALSE)).
+// -Everything else that is currently displayed on the overlap panel should be hidden from view in the previewed floater itself (setVisible(false)).
 // -Subsequent clicks on other elements in the overlap panel (they should still be there) should make other elements the final selection.
 // -On close or on the click of a new button, everything should be shown again and all selection state should be cleared.
 //   ~Jacob, 8/08
-BOOL LLPreviewedFloater::selectElement(LLView* parent, int x, int y, int depth)
+bool LLPreviewedFloater::selectElement(LLView* parent, int x, int y, int depth)
 {
     if(getVisible())
     {
-        BOOL handled = FALSE;
+        bool handled = false;
         if(LLFloaterUIPreview::containerType(parent))
         {
             for(child_list_const_iter_t child_it = parent->getChildList()->begin(); child_it != parent->getChildList()->end(); ++child_it)
@@ -1448,7 +1448,7 @@ BOOL LLPreviewedFloater::selectElement(LLView* parent, int x, int y, int depth)
                     child->getVisible() &&
                     selectElement(child, x, y, ++depth))
                 {
-                    handled = TRUE;
+                    handled = true;
                     break;
                 }
             }
@@ -1458,11 +1458,11 @@ BOOL LLPreviewedFloater::selectElement(LLView* parent, int x, int y, int depth)
         {
             LLView::sPreviewClickedElement = parent;
         }
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -1473,7 +1473,7 @@ void LLPreviewedFloater::draw()
         // Set and unset sDrawPreviewHighlights flag so as to avoid using two flags
         if(mFloaterUIPreview->mHighlightingOverlaps)
         {
-            LLView::sDrawPreviewHighlights = TRUE;
+            LLView::sDrawPreviewHighlights = true;
         }
 
         // If we're looking for truncations, draw debug rects for the displayed
@@ -1493,7 +1493,7 @@ void LLPreviewedFloater::draw()
 
         if(mFloaterUIPreview->mHighlightingOverlaps)
         {
-            LLView::sDrawPreviewHighlights = FALSE;
+            LLView::sDrawPreviewHighlights = false;
         }
     }
 }
@@ -1519,7 +1519,7 @@ void LLFloaterUIPreview::onClickToggleOverlapping()
     else
     {
         mHighlightingOverlaps = !mHighlightingOverlaps;
-        displayFloater(FALSE,1);
+        displayFloater(false,1);
         setRect(LLRect(getRect().mLeft,getRect().mTop,getRect().mRight + mOverlapPanel->getRect().getWidth(),getRect().mBottom));
         setResizeLimits(width + mOverlapPanel->getRect().getWidth(), height);
     }
@@ -1564,7 +1564,7 @@ void LLFloaterUIPreview::findOverlapsInChildren(LLView* parent)
 // *HACK: don't overlap with the drag handle and various other elements
 // This is using dynamic casts because there is no object-oriented way to tell which elements contain localizable text.  These are a few that are ignorable.
 // *NOTE: If a list of elements which have localizable content were created, this function should return false if viewp's class is in that list.
-BOOL LLFloaterUIPreview::overlapIgnorable(LLView* viewp)
+bool LLFloaterUIPreview::overlapIgnorable(LLView* viewp)
 {
     return  NULL != dynamic_cast<LLDragHandle*>(viewp) ||
             NULL != dynamic_cast<LLViewBorder*>(viewp) ||
@@ -1573,13 +1573,13 @@ BOOL LLFloaterUIPreview::overlapIgnorable(LLView* viewp)
 
 // *HACK: these are the only two container types as of 8/08, per Richard
 // This is using dynamic casts because there is no object-oriented way to tell which elements are containers.
-BOOL LLFloaterUIPreview::containerType(LLView* viewp)
+bool LLFloaterUIPreview::containerType(LLView* viewp)
 {
     return NULL != dynamic_cast<LLPanel*>(viewp) || NULL != dynamic_cast<LLLayoutStack*>(viewp);
 }
 
 // Check if two llview's rectangles overlap, with some tolerance
-BOOL LLFloaterUIPreview::elementOverlap(LLView* view1, LLView* view2)
+bool LLFloaterUIPreview::elementOverlap(LLView* view1, LLView* view2)
 {
     LLSD rec1 = view1->getRect().getValue();
     LLSD rec2 = view2->getRect().getValue();
@@ -1600,7 +1600,7 @@ void LLOverlapPanel::draw()
     if(!LLView::sPreviewClickedElement)
     {
         LLUI::translate(5,getRect().getHeight()-20);    // translate to top-5,left-5
-        LLView::sDrawPreviewHighlights = FALSE;
+        LLView::sDrawPreviewHighlights = false;
         LLFontGL::getFontSansSerifSmall()->renderUTF8(current_selection_text, 0, 0, 0, text_color,
                 LLFontGL::LEFT, LLFontGL::BASELINE, LLFontGL::NORMAL, LLFontGL::NO_SHADOW);
     }
@@ -1616,7 +1616,7 @@ void LLOverlapPanel::draw()
         if(overlappers.size() == 0)
         {
             LLUI::translate(5,getRect().getHeight()-20);    // translate to top-5,left-5
-            LLView::sDrawPreviewHighlights = FALSE;
+            LLView::sDrawPreviewHighlights = false;
             std::string current_selection = std::string(current_selection_text + LLView::sPreviewClickedElement->getName() + " (no elements overlap)");
             S32 text_width = LLFontGL::getFontSansSerifSmall()->getWidth(current_selection) + 10;
             LLFontGL::getFontSansSerifSmall()->renderUTF8(current_selection, 0, 0, 0, text_color,
@@ -1628,10 +1628,10 @@ void LLOverlapPanel::draw()
         }
 
         // recalculate required with and height; otherwise use cached
-        BOOL need_to_recalculate_bounds = FALSE;
+        bool need_to_recalculate_bounds = false;
         if(mLastClickedElement == NULL)
         {
-            need_to_recalculate_bounds = TRUE;
+            need_to_recalculate_bounds = true;
         }
 
         if(NULL == mLastClickedElement)
@@ -1681,7 +1681,7 @@ void LLOverlapPanel::draw()
         }
 
         LLUI::translate(5,getRect().getHeight()-10);    // translate to top left
-        LLView::sDrawPreviewHighlights = FALSE;
+        LLView::sDrawPreviewHighlights = false;
 
         // draw currently-selected element at top of overlappers
         LLUI::translate(0,-mSpacing);
diff --git a/indra/newview/llfloaterurlentry.cpp b/indra/newview/llfloaterurlentry.cpp
index 6d75c4eb94..7651b2528f 100644
--- a/indra/newview/llfloaterurlentry.cpp
+++ b/indra/newview/llfloaterurlentry.cpp
@@ -60,7 +60,7 @@ LLFloaterURLEntry::~LLFloaterURLEntry()
     sInstance = NULL;
 }
 
-BOOL LLFloaterURLEntry::postBuild()
+bool LLFloaterURLEntry::postBuild()
 {
     mMediaURLEdit = getChild<LLComboBox>("media_entry");
 
@@ -71,7 +71,7 @@ BOOL LLFloaterURLEntry::postBuild()
     childSetAction("clear_btn", onBtnClear, this);
     // clear media list button
     LLSD parcel_history = LLURLHistory::getURLHistory("parcel");
-    bool enable_clear_button = parcel_history.size() > 0 ? true : false;
+    bool enable_clear_button = parcel_history.size() > 0;
     getChildView("clear_btn")->setEnabled(enable_clear_button );
 
     // OK button
@@ -80,7 +80,7 @@ BOOL LLFloaterURLEntry::postBuild()
     setDefaultBtn("ok_btn");
     buildURLHistory();
 
-    return TRUE;
+    return true;
 }
 void LLFloaterURLEntry::buildURLHistory()
 {
diff --git a/indra/newview/llfloaterurlentry.h b/indra/newview/llfloaterurlentry.h
index 8118803422..d8cd946279 100644
--- a/indra/newview/llfloaterurlentry.h
+++ b/indra/newview/llfloaterurlentry.h
@@ -41,8 +41,8 @@ public:
     // Can only be shown by LLPanelLandMedia, and pushes data back into
     // that panel via the handle.
     static LLHandle<LLFloater> show(LLHandle<LLPanel> panel_land_media_handle, const std::string media_url);
-    /*virtual*/ BOOL    postBuild();
-    /*virtual*/ void onClose( bool app_quitting );
+    bool    postBuild() override;
+    void onClose( bool app_quitting ) override;
     void headerFetchComplete(S32 status, const std::string& mime_type);
 
     bool addURLToCombobox(const std::string& media_url);
diff --git a/indra/newview/llfloatervoiceeffect.cpp b/indra/newview/llfloatervoiceeffect.cpp
index 4bde73c7ec..9f7c9aba87 100644
--- a/indra/newview/llfloatervoiceeffect.cpp
+++ b/indra/newview/llfloatervoiceeffect.cpp
@@ -56,7 +56,7 @@ LLFloaterVoiceEffect::~LLFloaterVoiceEffect()
 }
 
 // virtual
-BOOL LLFloaterVoiceEffect::postBuild()
+bool LLFloaterVoiceEffect::postBuild()
 {
     setDefaultBtn("record_btn");
     getChild<LLButton>("record_btn")->setFocus(true);
@@ -81,7 +81,7 @@ BOOL LLFloaterVoiceEffect::postBuild()
     refreshEffectList();
     updateControls();
 
-    return TRUE;
+    return true;
 }
 
 // virtual
diff --git a/indra/newview/llfloatervoiceeffect.h b/indra/newview/llfloatervoiceeffect.h
index f45c46dcd9..323beb64ae 100644
--- a/indra/newview/llfloatervoiceeffect.h
+++ b/indra/newview/llfloatervoiceeffect.h
@@ -44,8 +44,8 @@ public:
     LLFloaterVoiceEffect(const LLSD& key);
     virtual ~LLFloaterVoiceEffect();
 
-    virtual BOOL postBuild();
-    virtual void onClose(bool app_quitting);
+    bool postBuild() override;
+    void onClose(bool app_quitting) override;
 
 private:
     enum ColumnIndex
@@ -58,7 +58,7 @@ private:
     void updateControls();
 
     /// Called by voice effect provider when voice effect list is changed.
-    virtual void onVoiceEffectChanged(bool effect_list_updated);
+    virtual void onVoiceEffectChanged(bool effect_list_updated) override;
 
     void onClickRecord();
     void onClickPlay();
diff --git a/indra/newview/llfloatervoicevolume.cpp b/indra/newview/llfloatervoicevolume.cpp
index ec1a09f877..17783ee810 100644
--- a/indra/newview/llfloatervoicevolume.cpp
+++ b/indra/newview/llfloatervoicevolume.cpp
@@ -60,7 +60,7 @@ public:
     LLFloaterVoiceVolume(const LLSD& avatar_id);
     virtual ~LLFloaterVoiceVolume();
 
-    /*virtual*/ BOOL postBuild(void);
+    /*virtual*/ bool postBuild(void);
 
     // Because floater is single instance, need to re-parse data on each spawn
     // (for example, inspector about same avatar but in different position)
@@ -104,7 +104,7 @@ LLFloaterVoiceVolume::~LLFloaterVoiceVolume()
 }
 
 /*virtual*/
-BOOL LLFloaterVoiceVolume::postBuild(void)
+bool LLFloaterVoiceVolume::postBuild(void)
 {
     getChild<LLUICtrl>("mute_btn")->setCommitCallback(
         boost::bind(&LLFloaterVoiceVolume::onClickMuteVolume, this) );
@@ -112,7 +112,7 @@ BOOL LLFloaterVoiceVolume::postBuild(void)
     getChild<LLUICtrl>("volume_slider")->setCommitCallback(
         boost::bind(&LLFloaterVoiceVolume::onVolumeChange, this, _2));
 
-    return TRUE;
+    return true;
 }
 
 
diff --git a/indra/newview/llfloaterwebcontent.cpp b/indra/newview/llfloaterwebcontent.cpp
index 71f1181566..f5b5b8293f 100644
--- a/indra/newview/llfloaterwebcontent.cpp
+++ b/indra/newview/llfloaterwebcontent.cpp
@@ -84,7 +84,7 @@ LLFloaterWebContent::LLFloaterWebContent( const Params& params )
     mCommitCallbackRegistrar.add( "WebContent.TestURL", boost::bind(&LLFloaterWebContent::onTestURL, this, _2));
 }
 
-BOOL LLFloaterWebContent::postBuild()
+bool LLFloaterWebContent::postBuild()
 {
     // these are used in a bunch of places so cache them
     mWebBrowser        = getChild< LLMediaCtrl >( "webbrowser" );
@@ -111,7 +111,7 @@ BOOL LLFloaterWebContent::postBuild()
     // initialize the URL history using the system URL History manager
     initializeURLHistory();
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterWebContent::initializeURLHistory()
diff --git a/indra/newview/llfloaterwebcontent.h b/indra/newview/llfloaterwebcontent.h
index e4f8cf4279..9bb6d73e5e 100644
--- a/indra/newview/llfloaterwebcontent.h
+++ b/indra/newview/llfloaterwebcontent.h
@@ -77,7 +77,7 @@ public:
     static void geometryChanged(const std::string &uuid, S32 x, S32 y, S32 width, S32 height);
     void geometryChanged(S32 x, S32 y, S32 width, S32 height);
 
-    /* virtual */ BOOL postBuild();
+    /* virtual */ bool postBuild();
     /* virtual */ void onOpen(const LLSD& key);
     /* virtual */ bool matchesKey(const LLSD& key);
     /* virtual */ void onClose(bool app_quitting);
diff --git a/indra/newview/llfloaterwhitelistentry.cpp b/indra/newview/llfloaterwhitelistentry.cpp
index d0ad176625..ca6c34484a 100644
--- a/indra/newview/llfloaterwhitelistentry.cpp
+++ b/indra/newview/llfloaterwhitelistentry.cpp
@@ -51,7 +51,7 @@ LLFloaterWhiteListEntry::~LLFloaterWhiteListEntry()
 
 ///////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLFloaterWhiteListEntry::postBuild()
+bool LLFloaterWhiteListEntry::postBuild()
 {
     mWhiteListEdit = getChild<LLLineEditor>("whitelist_entry");
 
@@ -60,7 +60,7 @@ BOOL LLFloaterWhiteListEntry::postBuild()
 
     setDefaultBtn("ok_btn");
 
-    return TRUE;
+    return true;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/indra/newview/llfloaterwhitelistentry.h b/indra/newview/llfloaterwhitelistentry.h
index 9e4e6b381c..bb6944635b 100644
--- a/indra/newview/llfloaterwhitelistentry.h
+++ b/indra/newview/llfloaterwhitelistentry.h
@@ -38,7 +38,7 @@ class LLFloaterWhiteListEntry :
         LLFloaterWhiteListEntry(const LLSD& key);
         ~LLFloaterWhiteListEntry();
 
-        BOOL postBuild();
+        bool postBuild() override;
 
     private:
         LLLineEditor* mWhiteListEdit;
diff --git a/indra/newview/llfloaterwindowsize.cpp b/indra/newview/llfloaterwindowsize.cpp
index 1ae7ea9692..442695c3bc 100644
--- a/indra/newview/llfloaterwindowsize.cpp
+++ b/indra/newview/llfloaterwindowsize.cpp
@@ -63,7 +63,7 @@ LLFloaterWindowSize::LLFloaterWindowSize(const LLSD& key)
 LLFloaterWindowSize::~LLFloaterWindowSize()
 {}
 
-BOOL LLFloaterWindowSize::postBuild()
+bool LLFloaterWindowSize::postBuild()
 {
     center();
     initWindowSizeControls();
@@ -72,7 +72,7 @@ BOOL LLFloaterWindowSize::postBuild()
     getChild<LLUICtrl>("cancel_btn")->setCommitCallback(
         boost::bind(&LLFloaterWindowSize::onClickCancel, this));
     setDefaultBtn("set_btn");
-    return TRUE;
+    return true;
 }
 
 void LLFloaterWindowSize::initWindowSizeControls()
diff --git a/indra/newview/llfloaterwindowsize.h b/indra/newview/llfloaterwindowsize.h
index aabbe401d7..49bd08e549 100644
--- a/indra/newview/llfloaterwindowsize.h
+++ b/indra/newview/llfloaterwindowsize.h
@@ -40,7 +40,7 @@ private:
     virtual ~LLFloaterWindowSize();
 
 public:
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
     void initWindowSizeControls();
     void onClickSet();
     void onClickCancel();
diff --git a/indra/newview/llfloaterworldmap.cpp b/indra/newview/llfloaterworldmap.cpp
index bb4ae7e8ab..2a72a361d6 100755
--- a/indra/newview/llfloaterworldmap.cpp
+++ b/indra/newview/llfloaterworldmap.cpp
@@ -209,7 +209,7 @@ public:
 
         //Get the ID
         LLUUID id;
-        if (!id.set( params[0], FALSE ))
+        if (!id.set( params[0], false ))
         {
             return false;
         }
@@ -278,9 +278,9 @@ LLFloaterWorldMap::LLFloaterWorldMap(const LLSD& key)
     mFriendObserver(NULL),
     mCompletingRegionName(),
     mCompletingRegionPos(),
-    mWaitingForTracker(FALSE),
-    mIsClosing(FALSE),
-    mSetToUserPosition(TRUE),
+    mWaitingForTracker(false),
+    mIsClosing(false),
+    mSetToUserPosition(true),
     mTrackedLocation(0,0,0),
     mTrackedStatus(LLTracker::TRACKING_NOTHING),
     mListFriendCombo(NULL),
@@ -312,7 +312,7 @@ void* LLFloaterWorldMap::createWorldMapView(void* data)
     return new LLWorldMapView();
 }
 
-BOOL LLFloaterWorldMap::postBuild()
+bool LLFloaterWorldMap::postBuild()
 {
     mMapView = dynamic_cast<LLWorldMapView*>(getChild<LLPanel>("objects_mapview"));
     mMapView->setPan(0, 0, true);
@@ -345,7 +345,7 @@ BOOL LLFloaterWorldMap::postBuild()
 
     onChangeMaturity();
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -388,7 +388,7 @@ void LLFloaterWorldMap::onOpen(const LLSD& key)
 
     bool center_on_target = (key.asString() == "center");
 
-    mIsClosing = FALSE;
+    mIsClosing = false;
 
     mMapView->clearLastClick();
 
@@ -414,7 +414,7 @@ void LLFloaterWorldMap::onOpen(const LLSD& key)
         const LLUUID landmark_folder_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_LANDMARK);
         LLInventoryModelBackgroundFetch::instance().start(landmark_folder_id);
 
-        getChild<LLUICtrl>("location")->setFocus( TRUE);
+        getChild<LLUICtrl>("location")->setFocus( true);
         gFocusMgr.triggerFocusFlash();
 
         buildAvatarIDList();
@@ -426,7 +426,7 @@ void LLFloaterWorldMap::onOpen(const LLSD& key)
 
     if (center_on_target)
     {
-        centerOnTarget(FALSE);
+        centerOnTarget(false);
     }
 }
 
@@ -437,14 +437,14 @@ void LLFloaterWorldMap::reloadIcons(void*)
 }
 
 // virtual
-BOOL LLFloaterWorldMap::handleHover(S32 x, S32 y, MASK mask)
+bool LLFloaterWorldMap::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL handled;
+    bool handled;
     handled = LLFloater::handleHover(x, y, mask);
     return handled;
 }
 
-BOOL LLFloaterWorldMap::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLFloaterWorldMap::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if (!isMinimized() && isFrontmost())
     {
@@ -465,7 +465,7 @@ BOOL LLFloaterWorldMap::handleScrollWheel(S32 x, S32 y, S32 clicks)
 
 
 // virtual
-void LLFloaterWorldMap::reshape( S32 width, S32 height, BOOL called_from_parent )
+void LLFloaterWorldMap::reshape( S32 width, S32 height, bool called_from_parent )
 {
     LLFloater::reshape( width, height, called_from_parent );
 }
@@ -529,16 +529,16 @@ void LLFloaterWorldMap::draw()
     // check for completion of tracking data
     if (mWaitingForTracker)
     {
-        centerOnTarget(TRUE);
+        centerOnTarget(true);
     }
 
-    getChildView("Teleport")->setEnabled((BOOL)tracking_status);
-    //  getChildView("Clear")->setEnabled((BOOL)tracking_status);
-    getChildView("Show Destination")->setEnabled((BOOL)tracking_status || LLWorldMap::getInstance()->isTracking());
+    getChildView("Teleport")->setEnabled((bool)tracking_status);
+    //  getChildView("Clear")->setEnabled((bool)tracking_status);
+    getChildView("Show Destination")->setEnabled((bool)tracking_status || LLWorldMap::getInstance()->isTracking());
     getChildView("copy_slurl")->setEnabled((mSLURL.isValid()) );
 
-    setMouseOpaque(TRUE);
-    getDragHandle()->setMouseOpaque(TRUE);
+    setMouseOpaque(true);
+    getDragHandle()->setMouseOpaque(true);
 
     mMapView->zoom((F32)getChild<LLUICtrl>("zoom slider")->getValue().asReal());
 
@@ -599,13 +599,13 @@ void LLFloaterWorldMap::trackLandmark( const LLUUID& landmark_item_id )
     if (!iface) return;
 
     buildLandmarkIDLists();
-    BOOL found = FALSE;
+    bool found = false;
     S32 idx;
     for (idx = 0; idx < mLandmarkItemIDList.size(); idx++)
     {
         if ( mLandmarkItemIDList.at(idx) == landmark_item_id)
         {
-            found = TRUE;
+            found = true;
             break;
         }
     }
@@ -754,7 +754,7 @@ void LLFloaterWorldMap::updateLocation()
             gotSimName = LLWorldMap::getInstance()->simNameFromPosGlobal( agentPos, agent_sim_name );
             if ( gotSimName )
             {
-                mSetToUserPosition = FALSE;
+                mSetToUserPosition = false;
 
                 // Fill out the location field
                 getChild<LLUICtrl>("location")->setValue(agent_sim_name);
@@ -966,8 +966,8 @@ void LLFloaterWorldMap::buildLandmarkIDLists()
     mLandmarkAssetIDList.reserve(mLandmarkAssetIDList.size() + items.size());
     mLandmarkItemIDList.reserve(mLandmarkItemIDList.size() + items.size());
 
-    S32 count = items.size();
-    for(S32 i = 0; i < count; ++i)
+    auto count = items.size();
+    for(size_t i = 0; i < count; ++i)
     {
         LLInventoryItem* item = items.at(i);
 
@@ -993,7 +993,7 @@ F32 LLFloaterWorldMap::getDistanceToDestination(const LLVector3d &destination,
 }
 
 
-void LLFloaterWorldMap::clearLocationSelection(BOOL clear_ui, BOOL dest_reached)
+void LLFloaterWorldMap::clearLocationSelection(bool clear_ui, bool dest_reached)
 {
     LLCtrlListInterface *list = mListSearchResults;
     if (list && (!dest_reached || (list->getItemCount() == 1)))
@@ -1005,7 +1005,7 @@ void LLFloaterWorldMap::clearLocationSelection(BOOL clear_ui, BOOL dest_reached)
 }
 
 
-void LLFloaterWorldMap::clearLandmarkSelection(BOOL clear_ui)
+void LLFloaterWorldMap::clearLandmarkSelection(bool clear_ui)
 {
     if (clear_ui || !childHasKeyboardFocus("landmark combo"))
     {
@@ -1018,7 +1018,7 @@ void LLFloaterWorldMap::clearLandmarkSelection(BOOL clear_ui)
 }
 
 
-void LLFloaterWorldMap::clearAvatarSelection(BOOL clear_ui)
+void LLFloaterWorldMap::clearAvatarSelection(bool clear_ui)
 {
     if (clear_ui || !childHasKeyboardFocus("friend combo"))
     {
@@ -1246,7 +1246,7 @@ void LLFloaterWorldMap::onLocationCommit()
         return;
     }
 
-    clearLocationSelection(FALSE);
+    clearLocationSelection(false);
     mCompletingRegionName = "";
     mLastRegionName = "";
 
@@ -1302,12 +1302,12 @@ void LLFloaterWorldMap::onClearBtn()
     LLTracker::stopTracking(true);
     LLWorldMap::getInstance()->cancelTracking();
     mSLURL = LLSLURL();                 // Clear the SLURL since it's invalid
-    mSetToUserPosition = TRUE;  // Revert back to the current user position
+    mSetToUserPosition = true;  // Revert back to the current user position
 }
 
 void LLFloaterWorldMap::onShowTargetBtn()
 {
-    centerOnTarget(TRUE);
+    centerOnTarget(true);
 }
 
 void LLFloaterWorldMap::onShowAgentBtn()
@@ -1349,7 +1349,7 @@ void LLFloaterWorldMap::onExpandCollapseBtn()
 }
 
 // protected
-void LLFloaterWorldMap::centerOnTarget(BOOL animate)
+void LLFloaterWorldMap::centerOnTarget(bool animate)
 {
     LLVector3d pos_global;
     if(LLTracker::getTrackingStatus() != LLTracker::TRACKING_NOTHING)
@@ -1359,7 +1359,7 @@ void LLFloaterWorldMap::centerOnTarget(BOOL animate)
         // absolute zero, and keep trying in the draw loop
         if (tracked_position.isExactlyZero())
         {
-            mWaitingForTracker = TRUE;
+            mWaitingForTracker = true;
             return;
         }
         else
@@ -1386,7 +1386,7 @@ void LLFloaterWorldMap::centerOnTarget(BOOL animate)
     mMapView->setPanWithInterpTime(-llfloor((F32)(pos_global.mdV[VX] * map_scale / REGION_WIDTH_METERS)),
                            -llfloor((F32)(pos_global.mdV[VY] * map_scale / REGION_WIDTH_METERS)),
                            !animate, 0.1f);
-    mWaitingForTracker = FALSE;
+    mWaitingForTracker = false;
 }
 
 // protected
@@ -1411,7 +1411,7 @@ void LLFloaterWorldMap::fly()
 // protected
 void LLFloaterWorldMap::teleport()
 {
-    BOOL teleport_home = FALSE;
+    bool teleport_home = false;
     LLVector3d pos_global;
     LLAvatarTracker& av_tracker = LLAvatarTracker::instance();
 
@@ -1426,7 +1426,7 @@ void LLFloaterWorldMap::teleport()
     {
         if( LLTracker::getTrackedLandmarkAssetID() == sHomeID )
         {
-            teleport_home = TRUE;
+            teleport_home = true;
         }
         else
         {
@@ -1485,12 +1485,12 @@ void LLFloaterWorldMap::flyToLandmark()
 
 void LLFloaterWorldMap::teleportToLandmark()
 {
-    BOOL has_destination = FALSE;
+    bool has_destination = false;
     LLUUID destination_id; // Null means "home"
 
     if( LLTracker::getTrackedLandmarkAssetID() == sHomeID )
     {
-        has_destination = TRUE;
+        has_destination = true;
     }
     else
     {
@@ -1499,7 +1499,7 @@ void LLFloaterWorldMap::teleportToLandmark()
         if(landmark && landmark->getGlobalPos(global_pos))
         {
             destination_id = LLTracker::getTrackedLandmarkAssetID();
-            has_destination = TRUE;
+            has_destination = true;
         }
         else if(landmark)
         {
@@ -1552,7 +1552,7 @@ void LLFloaterWorldMap::updateSims(bool found_null_sim)
     LLScrollListCtrl *list = getChild<LLScrollListCtrl>("search_results");
     list->operateOnAll(LLCtrlListInterface::OP_DELETE);
 
-    S32 name_length = mCompletingRegionName.length();
+    auto name_length = mCompletingRegionName.length();
 
     LLSD match;
 
@@ -1600,7 +1600,7 @@ void LLFloaterWorldMap::updateSims(bool found_null_sim)
         {
             list->selectFirstItem();
         }
-        getChild<LLUICtrl>("search_results")->setFocus(TRUE);
+        getChild<LLUICtrl>("search_results")->setFocus(true);
         onCommitSearchResult();
     }
     else
@@ -1615,7 +1615,7 @@ void LLFloaterWorldMap::onTeleportFinished()
 {
     if(isInVisibleChain())
     {
-        mMapView->setPan(0, 0, TRUE);
+        mMapView->setPan(0, 0, true);
     }
 }
 
@@ -1680,11 +1680,11 @@ void LLFloaterWorldMap::onChangeMaturity()
     // disable mature / adult events.
     if (!can_access_mature)
     {
-        gSavedSettings.setBOOL("ShowMatureEvents", FALSE);
+        gSavedSettings.setBOOL("ShowMatureEvents", false);
     }
     if (!can_access_adult)
     {
-        gSavedSettings.setBOOL("ShowAdultEvents", FALSE);
+        gSavedSettings.setBOOL("ShowAdultEvents", false);
     }
 }
 
@@ -1707,14 +1707,14 @@ LLPanelHideBeacon* LLPanelHideBeacon::getInstance()
 }
 
 
-BOOL LLPanelHideBeacon::postBuild()
+bool LLPanelHideBeacon::postBuild()
 {
     mHideButton = getChild<LLButton>("hide_beacon_btn");
     mHideButton->setCommitCallback(boost::bind(&LLPanelHideBeacon::onHideButtonClick, this));
 
     gViewerWindow->setOnWorldViewRectUpdated(boost::bind(&LLPanelHideBeacon::updatePosition, this));
 
-    return TRUE;
+    return true;
 }
 
 //virtual
@@ -1731,7 +1731,7 @@ void LLPanelHideBeacon::draw()
 }
 
 //virtual
-void LLPanelHideBeacon::setVisible(BOOL visible)
+void LLPanelHideBeacon::setVisible(bool visible)
 {
     if (gAgentCamera.getCameraMode() == CAMERA_MODE_MOUSELOOK) visible = false;
 
diff --git a/indra/newview/llfloaterworldmap.h b/indra/newview/llfloaterworldmap.h
index 25306d0601..6765157e55 100644
--- a/indra/newview/llfloaterworldmap.h
+++ b/indra/newview/llfloaterworldmap.h
@@ -56,16 +56,16 @@ public:
     static LLFloaterWorldMap* getInstance();
 
     static void *createWorldMapView(void* data);
-    BOOL postBuild();
+    bool postBuild();
 
     /*virtual*/ void onOpen(const LLSD& key);
     /*virtual*/ void onClose(bool app_quitting);
 
     static void reloadIcons(void*);
 
-    /*virtual*/ void reshape( S32 width, S32 height, BOOL called_from_parent = TRUE );
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleScrollWheel(S32 x, S32 y, S32 clicks);
+    /*virtual*/ void reshape( S32 width, S32 height, bool called_from_parent = true );
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleScrollWheel(S32 x, S32 y, S32 clicks);
     /*virtual*/ void draw();
 
     /*virtual*/ void onFocusLost();
@@ -94,9 +94,9 @@ public:
     // A z_attenuation of 0.0f collapses the distance into the X-Y plane
     F32             getDistanceToDestination(const LLVector3d& pos_global, F32 z_attenuation = 0.5f) const;
 
-    void            clearLocationSelection(BOOL clear_ui = FALSE, BOOL dest_reached = FALSE);
-    void            clearAvatarSelection(BOOL clear_ui = FALSE);
-    void            clearLandmarkSelection(BOOL clear_ui = FALSE);
+    void            clearLocationSelection(bool clear_ui = false, bool dest_reached = false);
+    void            clearAvatarSelection(bool clear_ui = false);
+    void            clearLandmarkSelection(bool clear_ui = false);
 
     // Adjust the maximally zoomed out limit of the zoom slider so you can
     // see the whole world, plus a little.
@@ -133,7 +133,7 @@ protected:
 
     void            onExpandCollapseBtn();
 
-    void            centerOnTarget(BOOL animate);
+    void            centerOnTarget(bool animate);
     void            updateLocation();
 
     // fly to the tracked item, if there is one
@@ -180,10 +180,10 @@ private:
     LLVector3               mCompletingRegionPos;
 
     std::string             mLastRegionName;
-    BOOL                    mWaitingForTracker;
+    bool                    mWaitingForTracker;
 
-    BOOL                    mIsClosing;
-    BOOL                    mSetToUserPosition;
+    bool                    mIsClosing;
+    bool                    mSetToUserPosition;
 
     LLVector3d              mTrackedLocation;
     LLTracker::ETrackingStatus mTrackedStatus;
@@ -207,8 +207,8 @@ public:
     static LLPanelHideBeacon* getInstance();
 
     LLPanelHideBeacon();
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void setVisible(BOOL visible);
+    /*virtual*/ bool postBuild();
+    /*virtual*/ void setVisible(bool visible);
     /*virtual*/ void draw();
 
 private:
diff --git a/indra/newview/llfolderviewmodelinventory.h b/indra/newview/llfolderviewmodelinventory.h
index c8fb155176..48b4ee5fd9 100644
--- a/indra/newview/llfolderviewmodelinventory.h
+++ b/indra/newview/llfolderviewmodelinventory.h
@@ -45,10 +45,10 @@ public:
     virtual PermissionMask getPermissionMask() const = 0;
     virtual LLFolderType::EType getPreferredType() const = 0;
     virtual void showProperties(void) = 0;
-    virtual BOOL isItemInTrash( void) const { return FALSE; } // TODO: make   into pure virtual.
+    virtual bool isItemInTrash( void) const { return false; } // TODO: make   into pure virtual.
     virtual bool isItemInOutfits() const { return false; }
-    virtual BOOL isAgentInventory() const { return FALSE; }
-    virtual BOOL isUpToDate() const = 0;
+    virtual bool isAgentInventory() const { return false; }
+    virtual bool isUpToDate() const = 0;
     virtual void addChild(LLFolderViewModelItem* child);
     virtual bool hasChildren() const = 0;
     virtual LLInventoryType::EType getInventoryType() const = 0;
@@ -62,7 +62,7 @@ public:
     virtual bool filter( LLFolderViewFilter& filter);
     virtual bool filterChildItem( LLFolderViewModelItem* item, LLFolderViewFilter& filter);
 
-    virtual BOOL startDrag(EDragAndDropType* type, LLUUID* id) const = 0;
+    virtual bool startDrag(EDragAndDropType* type, LLUUID* id) const = 0;
     virtual LLToolDragAndDrop::ESource getDragSource() const = 0;
 protected:
     bool mPrevPassedAllFilters;
diff --git a/indra/newview/llfollowcam.cpp b/indra/newview/llfollowcam.cpp
index 561ac96504..89f77414a1 100644
--- a/indra/newview/llfollowcam.cpp
+++ b/indra/newview/llfollowcam.cpp
@@ -443,9 +443,9 @@ void LLFollowCam::update()
 
 
 //-------------------------------------------------------------------------------------
-BOOL LLFollowCam::updateBehindnessConstraint(LLVector3 focus, LLVector3& cam_position)
+bool LLFollowCam::updateBehindnessConstraint(LLVector3 focus, LLVector3& cam_position)
 {
-    BOOL constraint_active = FALSE;
+    bool constraint_active = false;
     // only apply this stuff if the behindness angle is something other than opened up all the way
     if ( mBehindnessMaxAngle < FOLLOW_CAM_MAX_BEHINDNESS_ANGLE - FOLLOW_CAM_BEHINDNESS_EPSILON )
     {
@@ -486,7 +486,7 @@ BOOL LLFollowCam::updateBehindnessConstraint(LLVector3 focus, LLVector3& cam_pos
             F32 fraction = ((cameraOffsetAngle - mBehindnessMaxAngle) / cameraOffsetAngle) * LLSmoothInterpolation::getInterpolant(mBehindnessLag);
             cam_position = focus + horizontalSubjectBack * (slerp(fraction, camera_offset_rotation, LLQuaternion::DEFAULT));
             cam_position.mV[VZ] = cameraZ; // clamp z value back to what it was before we started messing with it
-            constraint_active = TRUE;
+            constraint_active = true;
         }
     }
     return constraint_active;
@@ -839,7 +839,7 @@ void LLFollowCamMgr::setCameraActive( const LLUUID& source, bool active )
 
 void LLFollowCamMgr::removeFollowCamParams(const LLUUID& source)
 {
-    setCameraActive(source, FALSE);
+    setCameraActive(source, false);
     LLFollowCamParams* params = getParamsForID(source);
     mParamMap.erase(source);
     delete params;
diff --git a/indra/newview/llfollowcam.h b/indra/newview/llfollowcam.h
index 509d654fb6..20f3d45cbb 100644
--- a/indra/newview/llfollowcam.h
+++ b/indra/newview/llfollowcam.h
@@ -188,7 +188,7 @@ protected:
     //------------------------------------------
 protected:
         void    calculatePitchSineAndCosine();
-        BOOL    updateBehindnessConstraint(LLVector3 focus, LLVector3& cam_position);
+        bool    updateBehindnessConstraint(LLVector3 focus, LLVector3& cam_position);
 
 };// end of FollowCam class
 
diff --git a/indra/newview/llfriendcard.cpp b/indra/newview/llfriendcard.cpp
index 3f9c3ee683..5300627cec 100644
--- a/indra/newview/llfriendcard.cpp
+++ b/indra/newview/llfriendcard.cpp
@@ -83,7 +83,7 @@ const LLUUID& get_folder_uuid(const LLUUID& parentFolderUUID, LLInventoryCollect
     gInventory.collectDescendentsIf(parentFolderUUID, cats, items,
         LLInventoryModel::EXCLUDE_TRASH, matchFunctor);
 
-    S32 cats_count = cats.size();
+    auto cats_count = cats.size();
 
     if (cats_count > 1)
     {
@@ -177,7 +177,7 @@ void LLFriendCardsManager::putAvatarData(const LLUUID& avatarID)
     LL_INFOS() << "Store avatar data, avatarID: " << avatarID << LL_ENDL;
     std::pair< avatar_uuid_set_t::iterator, bool > pr;
     pr = mBuddyIDSet.insert(avatarID);
-    if (pr.second == false)
+    if (!pr.second)
     {
         LL_WARNS() << "Trying to add avatar UUID for the stored avatar: "
             << avatarID
@@ -244,7 +244,7 @@ bool LLFriendCardsManager::isObjDirectDescendentOfCategory(const LLInventoryObje
             {
                 LLUUID creator_id = item->getCreatorUUID();
                 LLViewerInventoryItem* cur_item = NULL;
-                for ( S32 i = items->size() - 1; i >= 0; --i )
+                for (S32 i = static_cast<S32>(items->size()) - 1; i >= 0; --i)
                 {
                     cur_item = items->at(i);
                     if ( creator_id == cur_item->getCreatorUUID() )
@@ -261,7 +261,7 @@ bool LLFriendCardsManager::isObjDirectDescendentOfCategory(const LLInventoryObje
             // Note: UUID's of compared items also may be not equal.
             std::string obj_name = obj->getName();
             LLViewerInventoryItem* cur_item = NULL;
-            for ( S32 i = items->size() - 1; i >= 0; --i )
+            for (S32 i = static_cast<S32>(items->size()) - 1; i >= 0; --i)
             {
                 cur_item = items->at(i);
                 if ( obj->getType() != cur_item->getType() )
@@ -281,7 +281,7 @@ bool LLFriendCardsManager::isObjDirectDescendentOfCategory(const LLInventoryObje
         // then return true. Note: UUID's of compared items also may be not equal.
         std::string obj_name = obj->getName();
         LLViewerInventoryCategory* cur_cat = NULL;
-        for ( S32 i = cats->size() - 1; i >= 0; --i )
+        for (S32 i = static_cast<S32>(cats->size()) - 1; i >= 0; --i)
         {
             cur_cat = cats->at(i);
             if ( obj->getType() != cur_cat->getType() )
@@ -303,7 +303,7 @@ bool LLFriendCardsManager::isCategoryInFriendFolder(const LLViewerInventoryCateg
 {
     if (NULL == cat)
         return false;
-    return TRUE == gInventory.isObjectDescendentOf(cat->getUUID(), findFriendFolderUUIDImpl());
+    return true == gInventory.isObjectDescendentOf(cat->getUUID(), findFriendFolderUUIDImpl());
 }
 
 bool LLFriendCardsManager::isAnyFriendCategory(const LLUUID& catID) const
@@ -312,7 +312,7 @@ bool LLFriendCardsManager::isAnyFriendCategory(const LLUUID& catID) const
     if (catID == friendFolderID)
         return true;
 
-    return TRUE == gInventory.isObjectDescendentOf(catID, friendFolderID);
+    return true == gInventory.isObjectDescendentOf(catID, friendFolderID);
 }
 
 void LLFriendCardsManager::syncFriendCardsFolders()
diff --git a/indra/newview/llgesturemgr.cpp b/indra/newview/llgesturemgr.cpp
index 5671f6dd59..8ee11cdbd2 100644
--- a/indra/newview/llgesturemgr.cpp
+++ b/indra/newview/llgesturemgr.cpp
@@ -65,7 +65,7 @@ const F32 MAX_WAIT_KEY_SECS = 60.f * 10.f;
 // Lightweight constructor.
 // init() does the heavy lifting.
 LLGestureMgr::LLGestureMgr()
-:   mValid(FALSE),
+:   mValid(false),
     mPlaying(),
     mActive(),
     mLoadingCount(0)
@@ -145,8 +145,8 @@ void LLGestureMgr::activateGesture(const LLUUID& item_id)
     mLoadingCount = 1;
     mDeactivateSimilarNames.clear();
 
-    const BOOL inform_server = TRUE;
-    const BOOL deactivate_similar = FALSE;
+    const bool inform_server = true;
+    const bool deactivate_similar = false;
     activateGestureWithAsset(item_id, asset_id, inform_server, deactivate_similar);
 }
 
@@ -185,8 +185,8 @@ void LLGestureMgr::activateGestures(LLViewerInventoryItem::item_array_t& items)
         }
 
         // Don't inform server, we'll do that in bulk
-        const BOOL no_inform_server = FALSE;
-        const BOOL deactivate_similar = TRUE;
+        const bool no_inform_server = false;
+        const bool deactivate_similar = true;
         activateGestureWithAsset(item->getUUID(), item->getAssetUUID(),
                                  no_inform_server,
                                  deactivate_similar);
@@ -195,7 +195,7 @@ void LLGestureMgr::activateGestures(LLViewerInventoryItem::item_array_t& items)
     // Inform the database of this change
     LLMessageSystem* msg = gMessageSystem;
 
-    BOOL start_message = TRUE;
+    bool start_message = true;
 
     for (it = items.begin(); it != items.end(); ++it)
     {
@@ -213,7 +213,7 @@ void LLGestureMgr::activateGestures(LLViewerInventoryItem::item_array_t& items)
             msg->addUUID("AgentID", gAgent.getID());
             msg->addUUID("SessionID", gAgent.getSessionID());
             msg->addU32("Flags", 0x0);
-            start_message = FALSE;
+            start_message = false;
         }
 
         msg->nextBlock("Data");
@@ -224,7 +224,7 @@ void LLGestureMgr::activateGestures(LLViewerInventoryItem::item_array_t& items)
         if (msg->getCurrentSendTotal() > MTUBYTES)
         {
             gAgent.sendReliableMessage();
-            start_message = TRUE;
+            start_message = true;
         }
     }
 
@@ -238,8 +238,8 @@ void LLGestureMgr::activateGestures(LLViewerInventoryItem::item_array_t& items)
 struct LLLoadInfo
 {
     LLUUID mItemID;
-    BOOL mInformServer;
-    BOOL mDeactivateSimilar;
+    bool mInformServer;
+    bool mDeactivateSimilar;
 };
 
 // If inform_server is true, will send a message upstream to update
@@ -249,8 +249,8 @@ struct LLLoadInfo
  */
 void LLGestureMgr::activateGestureWithAsset(const LLUUID& item_id,
                                                 const LLUUID& asset_id,
-                                                BOOL inform_server,
-                                                BOOL deactivate_similar)
+                                                bool inform_server,
+                                                bool deactivate_similar)
 {
     const LLUUID& base_item_id = gInventory.getLinkedItemID(item_id);
 
@@ -284,7 +284,7 @@ void LLGestureMgr::activateGestureWithAsset(const LLUUID& item_id,
         info->mInformServer = inform_server;
         info->mDeactivateSimilar = deactivate_similar;
 
-        const BOOL high_priority = TRUE;
+        const bool high_priority = true;
         gAssetStorage->getAssetData(asset_id,
                                     LLAssetType::AT_GESTURE,
                                     onLoadComplete,
@@ -391,7 +391,7 @@ void LLGestureMgr::deactivateSimilarGestures(LLMultiGesture* in, const LLUUID& i
 
     // Inform database of the change
     LLMessageSystem* msg = gMessageSystem;
-    BOOL start_message = TRUE;
+    bool start_message = true;
     uuid_vec_t::const_iterator vit = gest_item_ids.begin();
     while (vit != gest_item_ids.end())
     {
@@ -402,7 +402,7 @@ void LLGestureMgr::deactivateSimilarGestures(LLMultiGesture* in, const LLUUID& i
             msg->addUUID("AgentID", gAgent.getID());
             msg->addUUID("SessionID", gAgent.getSessionID());
             msg->addU32("Flags", 0x0);
-            start_message = FALSE;
+            start_message = false;
         }
 
         msg->nextBlock("Data");
@@ -412,7 +412,7 @@ void LLGestureMgr::deactivateSimilarGestures(LLMultiGesture* in, const LLUUID& i
         if (msg->getCurrentSendTotal() > MTUBYTES)
         {
             gAgent.sendReliableMessage();
-            start_message = TRUE;
+            start_message = true;
         }
 
         ++vit;
@@ -437,7 +437,7 @@ void LLGestureMgr::deactivateSimilarGestures(LLMultiGesture* in, const LLUUID& i
 }
 
 
-BOOL LLGestureMgr::isGestureActive(const LLUUID& item_id)
+bool LLGestureMgr::isGestureActive(const LLUUID& item_id)
 {
     const LLUUID& base_item_id = gInventory.getLinkedItemID(item_id);
     item_map_t::iterator it = mActive.find(base_item_id);
@@ -445,24 +445,24 @@ BOOL LLGestureMgr::isGestureActive(const LLUUID& item_id)
 }
 
 
-BOOL LLGestureMgr::isGesturePlaying(const LLUUID& item_id)
+bool LLGestureMgr::isGesturePlaying(const LLUUID& item_id)
 {
     const LLUUID& base_item_id = gInventory.getLinkedItemID(item_id);
 
     item_map_t::iterator it = mActive.find(base_item_id);
-    if (it == mActive.end()) return FALSE;
+    if (it == mActive.end()) return false;
 
     LLMultiGesture* gesture = (*it).second;
-    if (!gesture) return FALSE;
+    if (!gesture) return false;
 
     return gesture->mPlaying;
 }
 
-BOOL LLGestureMgr::isGesturePlaying(LLMultiGesture* gesture)
+bool LLGestureMgr::isGesturePlaying(LLMultiGesture* gesture)
 {
     if(!gesture)
     {
-        return FALSE;
+        return false;
     }
 
     return gesture->mPlaying;
@@ -501,10 +501,10 @@ void LLGestureMgr::replaceGesture(const LLUUID& item_id, LLMultiGesture* new_ges
 
         LLLoadInfo* info = new LLLoadInfo;
         info->mItemID = base_item_id;
-        info->mInformServer = TRUE;
-        info->mDeactivateSimilar = FALSE;
+        info->mInformServer = true;
+        info->mDeactivateSimilar = false;
 
-        const BOOL high_priority = TRUE;
+        const bool high_priority = true;
         gAssetStorage->getAssetData(asset_id,
                                     LLAssetType::AT_GESTURE,
                                     onLoadComplete,
@@ -540,7 +540,7 @@ void LLGestureMgr::playGesture(LLMultiGesture* gesture, bool fromKeyPress)
     gesture->mTriggeredByKey = fromKeyPress;
 
     // Add to list of playing
-    gesture->mPlaying = TRUE;
+    gesture->mPlaying = true;
     mPlaying.push_back(gesture);
 
     // Load all needed assets to minimize the delays
@@ -569,7 +569,7 @@ void LLGestureMgr::playGesture(LLMultiGesture* gesture, bool fromKeyPress)
                                     LLAssetType::AT_ANIMATION,
                                     onAssetLoadComplete,
                                     (void *)id,
-                                    TRUE);
+                                    true);
                 }
                 break;
             }
@@ -586,7 +586,7 @@ void LLGestureMgr::playGesture(LLMultiGesture* gesture, bool fromKeyPress)
                                     LLAssetType::AT_SOUND,
                                     onAssetLoadComplete,
                                     NULL,
-                                    TRUE);
+                                    true);
                 }
                 break;
             }
@@ -628,12 +628,12 @@ void LLGestureMgr::playGesture(const LLUUID& item_id)
 // Iterates through space delimited tokens in string, triggering any gestures found.
 // Generates a revised string that has the found tokens replaced by their replacement strings
 // and (as a minor side effect) has multiple spaces in a row replaced by single spaces.
-BOOL LLGestureMgr::triggerAndReviseString(const std::string &utf8str, std::string* revised_string)
+bool LLGestureMgr::triggerAndReviseString(const std::string &utf8str, std::string* revised_string)
 {
     std::string tokenized = utf8str;
 
-    BOOL found_gestures = FALSE;
-    BOOL first_token = TRUE;
+    bool found_gestures = false;
+    bool first_token = true;
 
     typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
     boost::char_separator<char> sep(" ");
@@ -671,7 +671,7 @@ BOOL LLGestureMgr::triggerAndReviseString(const std::string &utf8str, std::strin
             {
                 // choose one at random
                 {
-                    S32 random = ll_rand(matching.size());
+                    S32 random = ll_rand(static_cast<S32>(matching.size()));
 
                     gesture = matching[random];
 
@@ -697,7 +697,7 @@ BOOL LLGestureMgr::triggerAndReviseString(const std::string &utf8str, std::strin
                                 revised_string->append( gesture->mReplaceText );
                         }
                     }
-                    found_gestures = TRUE;
+                    found_gestures = true;
                 }
             }
         }
@@ -714,14 +714,14 @@ BOOL LLGestureMgr::triggerAndReviseString(const std::string &utf8str, std::strin
                 revised_string->append( cur_token );
         }
 
-        first_token = FALSE;
+        first_token = false;
         gesture = NULL;
     }
     return found_gestures;
 }
 
 
-BOOL LLGestureMgr::triggerGesture(KEY key, MASK mask)
+bool LLGestureMgr::triggerGesture(KEY key, MASK mask)
 {
     std::vector <LLMultiGesture *> matching;
     item_map_t::iterator it;
@@ -736,7 +736,7 @@ BOOL LLGestureMgr::triggerGesture(KEY key, MASK mask)
 
         if (gesture->mKey == key
             && gesture->mMask == mask
-            && gesture->mWaitingKeyRelease == FALSE)
+            && gesture->mWaitingKeyRelease == false)
         {
             matching.push_back(gesture);
         }
@@ -745,18 +745,18 @@ BOOL LLGestureMgr::triggerGesture(KEY key, MASK mask)
     // choose one and play it
     if (matching.size() > 0)
     {
-        U32 random = ll_rand(matching.size());
+        U32 random = ll_rand(static_cast<S32>(matching.size()));
 
         LLMultiGesture* gesture = matching[random];
 
-        playGesture(gesture, TRUE);
-        return TRUE;
+        playGesture(gesture, true);
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL LLGestureMgr::triggerGestureRelease(KEY key, MASK mask)
+bool LLGestureMgr::triggerGestureRelease(KEY key, MASK mask)
 {
     std::vector <LLMultiGesture *> matching;
     item_map_t::iterator it;
@@ -772,7 +772,7 @@ BOOL LLGestureMgr::triggerGestureRelease(KEY key, MASK mask)
         if (gesture->mKey == key
             && gesture->mMask == mask)
         {
-            gesture->mKeyReleased = TRUE;
+            gesture->mKeyReleased = true;
         }
     }
 
@@ -783,7 +783,7 @@ BOOL LLGestureMgr::triggerGestureRelease(KEY key, MASK mask)
 
 S32 LLGestureMgr::getPlayingCount() const
 {
-    return mPlaying.size();
+    return static_cast<S32>(mPlaying.size());
 }
 
 
@@ -890,7 +890,7 @@ void LLGestureMgr::stepGesture(LLMultiGesture* gesture)
     }
 
     // Run the current steps
-    BOOL waiting = FALSE;
+    bool waiting = false;
     while (!waiting && gesture->mPlaying)
     {
         // Get the current step, if there is one.
@@ -904,7 +904,7 @@ void LLGestureMgr::stepGesture(LLMultiGesture* gesture)
         else
         {
             // step stays null, we're off the end
-            gesture->mWaitingAtEnd = TRUE;
+            gesture->mWaitingAtEnd = true;
         }
 
 
@@ -919,12 +919,12 @@ void LLGestureMgr::stepGesture(LLMultiGesture* gesture)
                 && gesture->mPlayingAnimIDs.empty()))
             {
                 // all animations are done playing
-                gesture->mWaitingAtEnd = FALSE;
-                gesture->mPlaying = FALSE;
+                gesture->mWaitingAtEnd = false;
+                gesture->mPlaying = false;
             }
             else
             {
-                waiting = TRUE;
+                waiting = true;
             }
             continue;
         }
@@ -937,20 +937,20 @@ void LLGestureMgr::stepGesture(LLMultiGesture* gesture)
             if (gesture->mKeyReleased)
             {
                 // wait is done, continue execution
-                gesture->mWaitingKeyRelease = FALSE;
+                gesture->mWaitingKeyRelease = false;
                 gesture->mCurrentStep++;
             }
             else if (gesture->mWaitTimer.getElapsedTimeF32() > MAX_WAIT_KEY_SECS)
             {
                 LL_INFOS("GestureMgr") << "Waited too long for key release, continuing gesture."
                     << LL_ENDL;
-                gesture->mWaitingKeyRelease = FALSE;
+                gesture->mWaitingKeyRelease = false;
                 gesture->mCurrentStep++;
             }
             else
             {
                 // we're waiting, so execution is done for now
-                waiting = TRUE;
+                waiting = true;
             }
             continue;
         }
@@ -965,7 +965,7 @@ void LLGestureMgr::stepGesture(LLMultiGesture* gesture)
                 && gesture->mPlayingAnimIDs.empty()))
             {
                 // all animations are done playing
-                gesture->mWaitingAnimations = FALSE;
+                gesture->mWaitingAnimations = false;
                 gesture->mCurrentStep++;
             }
             else if (gesture->mWaitTimer.getElapsedTimeF32() > MAX_WAIT_ANIM_SECS)
@@ -973,12 +973,12 @@ void LLGestureMgr::stepGesture(LLMultiGesture* gesture)
                 // we've waited too long for an animation
                 LL_INFOS("GestureMgr") << "Waited too long for animations to stop, continuing gesture."
                     << LL_ENDL;
-                gesture->mWaitingAnimations = FALSE;
+                gesture->mWaitingAnimations = false;
                 gesture->mCurrentStep++;
             }
             else
             {
-                waiting = TRUE;
+                waiting = true;
             }
             continue;
         }
@@ -994,13 +994,13 @@ void LLGestureMgr::stepGesture(LLMultiGesture* gesture)
             if (elapsed > wait_step->mWaitSeconds)
             {
                 // wait is done, continue execution
-                gesture->mWaitingTimer = FALSE;
+                gesture->mWaitingTimer = false;
                 gesture->mCurrentStep++;
             }
             else
             {
                 // we're waiting, so execution is done for now
-                waiting = TRUE;
+                waiting = true;
             }
             continue;
         }
@@ -1060,7 +1060,7 @@ void LLGestureMgr::runStep(LLMultiGesture* gesture, LLGestureStep* step)
             // Don't animate the nodding, as this might not blend with
             // other playing animations.
 
-            const BOOL animate = FALSE;
+            const bool animate = false;
 
             (LLFloaterReg::getTypedInstance<LLFloaterIMNearbyChat>("nearby_chat"))->
                     sendChatFromViewer(chat_text, CHAT_TYPE_NORMAL, animate);
@@ -1072,23 +1072,23 @@ void LLGestureMgr::runStep(LLMultiGesture* gesture, LLGestureStep* step)
         {
             LLGestureStepWait* wait_step = (LLGestureStepWait*)step;
             if (gesture->mTriggeredByKey // Only wait here IF we were triggered by a key!
-                && gesture->mWaitingKeyRelease == FALSE // We can only do this once! Prevent gestures infinitely running
+                && gesture->mWaitingKeyRelease == false // We can only do this once! Prevent gestures infinitely running
                 && wait_step->mFlags & WAIT_FLAG_KEY_RELEASE)
             {
                 // Lets wait for the key release first so we don't hold up re-presses
-                gesture->mWaitingKeyRelease = TRUE;
-                gesture->mKeyReleased = FALSE;
+                gesture->mWaitingKeyRelease = true;
+                gesture->mKeyReleased = false;
                 // Use the wait timer as a deadlock breaker for key release waits.
                 gesture->mWaitTimer.reset();
             }
             else if (wait_step->mFlags & WAIT_FLAG_TIME)
             {
-                gesture->mWaitingTimer = TRUE;
+                gesture->mWaitingTimer = true;
                 gesture->mWaitTimer.reset();
             }
             else if (wait_step->mFlags & WAIT_FLAG_ALL_ANIM)
             {
-                gesture->mWaitingAnimations = TRUE;
+                gesture->mWaitingAnimations = true;
                 // Use the wait timer as a deadlock breaker for animation waits.
                 gesture->mWaitTimer.reset();
             }
@@ -1115,8 +1115,8 @@ void LLGestureMgr::onLoadComplete(const LLUUID& asset_uuid,
     LLLoadInfo* info = (LLLoadInfo*)user_data;
 
     LLUUID item_id = info->mItemID;
-    BOOL inform_server = info->mInformServer;
-    BOOL deactivate_similar = info->mDeactivateSimilar;
+    bool inform_server = info->mInformServer;
+    bool deactivate_similar = info->mDeactivateSimilar;
 
     delete info;
     info = NULL;
@@ -1137,7 +1137,7 @@ void LLGestureMgr::onLoadComplete(const LLUUID& asset_uuid,
         LLMultiGesture* gesture = new LLMultiGesture();
 
         LLDataPackerAsciiBuffer dp(&buffer[0], size+1);
-        BOOL ok = gesture->deserialize(dp);
+        bool ok = gesture->deserialize(dp);
 
         if (ok)
         {
@@ -1460,9 +1460,9 @@ void LLGestureMgr::notifyObservers()
     }
 }
 
-BOOL LLGestureMgr::matchPrefix(const std::string& in_str, std::string* out_str)
+bool LLGestureMgr::matchPrefix(const std::string& in_str, std::string* out_str)
 {
-    S32 in_len = in_str.length();
+    auto in_len = in_str.length();
 
     //return whole trigger, if received text equals to it
     item_map_t::iterator it;
@@ -1475,7 +1475,7 @@ BOOL LLGestureMgr::matchPrefix(const std::string& in_str, std::string* out_str)
             if (!LLStringUtil::compareInsensitive(in_str, trigger))
             {
                 *out_str = trigger;
-                return TRUE;
+                return true;
             }
         }
     }
@@ -1490,7 +1490,7 @@ BOOL LLGestureMgr::matchPrefix(const std::string& in_str, std::string* out_str)
         {
             const std::string& trigger = gesture->getTrigger();
 
-            if (in_len > (S32)trigger.length())
+            if (in_len > trigger.length())
             {
                 // too short, bail out
                 continue;
@@ -1526,7 +1526,7 @@ BOOL LLGestureMgr::matchPrefix(const std::string& in_str, std::string* out_str)
                 }
                 if (rest_of_match.compare("") == 0)
                 {
-                    return TRUE;
+                    return true;
                 }
                 if (buf.compare("") != 0)
                 {
@@ -1540,10 +1540,10 @@ BOOL LLGestureMgr::matchPrefix(const std::string& in_str, std::string* out_str)
     if (rest_of_match.compare("") != 0)
     {
         *out_str = in_str+rest_of_match;
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 
diff --git a/indra/newview/llgesturemgr.h b/indra/newview/llgesturemgr.h
index b41f0ee106..8db36c6d89 100644
--- a/indra/newview/llgesturemgr.h
+++ b/indra/newview/llgesturemgr.h
@@ -80,11 +80,11 @@ public:
 
     // Load gesture into in-memory active form.
     // Can be called even if the inventory item isn't loaded yet.
-    // inform_server TRUE will send message upstream to update database
+    // inform_server true will send message upstream to update database
     // user_gesture_active table, which isn't necessary on login.
     // deactivate_similar will cause other gestures with the same trigger phrase
     // or keybinding to be deactivated.
-    void activateGestureWithAsset(const LLUUID& item_id, const LLUUID& asset_id, BOOL inform_server, BOOL deactivate_similar);
+    void activateGestureWithAsset(const LLUUID& item_id, const LLUUID& asset_id, bool inform_server, bool deactivate_similar);
 
     // Takes gesture out of active list and deletes it.
     void deactivateGesture(const LLUUID& item_id);
@@ -93,18 +93,18 @@ public:
     // or this hot key.
     void deactivateSimilarGestures(LLMultiGesture* gesture, const LLUUID& in_item_id);
 
-    BOOL isGestureActive(const LLUUID& item_id);
+    bool isGestureActive(const LLUUID& item_id);
 
-    BOOL isGesturePlaying(const LLUUID& item_id);
+    bool isGesturePlaying(const LLUUID& item_id);
 
-    BOOL isGesturePlaying(LLMultiGesture* gesture);
+    bool isGesturePlaying(LLMultiGesture* gesture);
 
     const item_map_t& getActiveGestures() const { return mActive; }
     // Force a gesture to be played, for example, if it is being
     // previewed.
     void playGesture(LLMultiGesture* gesture, bool fromKeyPress);
     void playGesture(LLMultiGesture* gesture) {
-        playGesture(gesture, FALSE);
+        playGesture(gesture, false);
     }
     void playGesture(const LLUUID& item_id);
 
@@ -122,18 +122,18 @@ public:
         mCallbackMap[inv_item_id] = cb;
     }
     // Trigger a random gesture that matches this key.
-    // Returns TRUE if it finds a gesture bound to that key.
-    BOOL triggerGesture(KEY key, MASK mask);
+    // Returns true if it finds a gesture bound to that key.
+    bool triggerGesture(KEY key, MASK mask);
 
     // Trigger release wait on all gestures that matches this key.
-    // Returns TRUE if it finds a gesture bound to that key.
-    BOOL triggerGestureRelease(KEY key, MASK mask);
+    // Returns true if it finds a gesture bound to that key.
+    bool triggerGestureRelease(KEY key, MASK mask);
 
     // Trigger all gestures referenced as substrings in this string
-    BOOL triggerAndReviseString(const std::string &str, std::string *revised_string = NULL);
+    bool triggerAndReviseString(const std::string &str, std::string *revised_string = NULL);
 
     // Does some gesture have this key bound?
-    BOOL isKeyBound(KEY key, MASK mask);
+    bool isKeyBound(KEY key, MASK mask);
 
     S32 getPlayingCount() const;
 
@@ -144,7 +144,7 @@ public:
     // Overriding so we can update active gesture names and notify observers
     void changed(U32 mask) override;
 
-    BOOL matchPrefix(const std::string& in_str, std::string* out_str);
+    bool matchPrefix(const std::string& in_str, std::string* out_str);
 
     // Copy item ids into the vector
     void getItemIDs(uuid_vec_t* ids);
@@ -187,7 +187,7 @@ private:
     std::vector<LLGestureManagerObserver*> mObservers;
     callback_map_t mCallbackMap;
     std::vector<LLMultiGesture*> mPlaying;
-    BOOL mValid;
+    bool mValid;
 
     std::set<LLUUID> mLoadingAssets;
 
diff --git a/indra/newview/llgiveinventory.cpp b/indra/newview/llgiveinventory.cpp
index abe44ae019..1259b65ebe 100644
--- a/indra/newview/llgiveinventory.cpp
+++ b/indra/newview/llgiveinventory.cpp
@@ -79,7 +79,7 @@ bool LLGiveable::operator()(LLInventoryCategory* cat, LLInventoryItem* item)
            !item->getPermissions().allowOperationBy(PERM_TRANSFER,
                                 gAgent.getID()))
         {
-            allowed = FALSE;
+            allowed = false;
         }
         if (allowed &&
            !item->getPermissions().allowCopyBy(gAgent.getID()))
@@ -242,9 +242,9 @@ bool LLGiveInventory::doGiveInventoryCategory(const LLUUID& to_agent,
         items,
         LLInventoryModel::EXCLUDE_TRASH,
         giveable);
-    S32 count = cats.size();
+    auto count = cats.size();
     bool complete = true;
-    for(S32 i = 0; i < count; ++i)
+    for(size_t i = 0; i < count; ++i)
     {
         if (!gInventory.isCategoryComplete(cats.at(i)->getUUID()))
         {
@@ -392,7 +392,7 @@ void LLGiveInventory::commitGiveInventoryItem(const LLUUID& to_agent,
     pack_instant_message(
         gMessageSystem,
         gAgentID,
-        FALSE,
+        false,
         gAgentSessionID,
         to_agent,
         name,
@@ -409,7 +409,7 @@ void LLGiveInventory::commitGiveInventoryItem(const LLUUID& to_agent,
     gAgent.sendReliableMessage();
 
     // VEFFECT: giveInventory
-    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, TRUE);
+    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, true);
     effectp->setSourceObject(gAgentAvatarp);
     effectp->setTargetObject(gObjectList.findObject(to_agent));
     effectp->setDuration(LL_HUD_DUR_SHORT);
@@ -446,8 +446,8 @@ bool LLGiveInventory::handleCopyProtectedCategory(const LLSD& notification, cons
                 items,
                 LLInventoryModel::EXCLUDE_TRASH,
                 remove);
-            S32 count = items.size();
-            for(S32 i = 0; i < count; ++i)
+            auto count = items.size();
+            for(size_t i = 0; i < count; ++i)
             {
                 gInventory.deleteObject(items.at(i)->getUUID());
             }
@@ -503,7 +503,7 @@ bool LLGiveInventory::commitGiveInventoryCategory(const LLUUID& to_agent,
     // MAX ITEMS is based on (sizeof(uuid)+2) * count must be <
     // MTUBYTES or 18 * count < 1200 => count < 1200/18 =>
     // 66. I've cut it down a bit from there to give some pad.
-    S32 count = items.size() + cats.size();
+    auto count = items.size() + cats.size();
     if (count > MAX_ITEMS)
     {
         LLNotificationsUtil::add("TooManyItems");
@@ -520,7 +520,7 @@ bool LLGiveInventory::commitGiveInventoryCategory(const LLUUID& to_agent,
         LLAgentUI::buildFullname(name);
         LLUUID transaction_id;
         transaction_id.generate();
-        S32 bucket_size = (sizeof(U8) + UUID_BYTES) * (count + 1);
+        S32 bucket_size = (sizeof(U8) + UUID_BYTES) * (static_cast<S32>(count) + 1);
         U8* bucket = new U8[bucket_size];
         U8* pos = bucket;
         U8 type = (U8)cat->getType();
@@ -549,7 +549,7 @@ bool LLGiveInventory::commitGiveInventoryCategory(const LLUUID& to_agent,
         pack_instant_message(
             gMessageSystem,
             gAgent.getID(),
-            FALSE,
+            false,
             gAgent.getSessionID(),
             to_agent,
             name,
@@ -567,7 +567,7 @@ bool LLGiveInventory::commitGiveInventoryCategory(const LLUUID& to_agent,
         delete[] bucket;
 
         // VEFFECT: giveInventoryCategory
-        LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, TRUE);
+        LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, true);
         effectp->setSourceObject(gAgentAvatarp);
         effectp->setTargetObject(gObjectList.findObject(to_agent));
         effectp->setDuration(LL_HUD_DUR_SHORT);
diff --git a/indra/newview/llglsandbox.cpp b/indra/newview/llglsandbox.cpp
index a688689013..08f8918e5d 100644
--- a/indra/newview/llglsandbox.cpp
+++ b/indra/newview/llglsandbox.cpp
@@ -77,7 +77,7 @@ void LLToolSelectRect::handleRectangleSelection(S32 x, S32 y, MASK mask)
     F32 select_dist_squared = gSavedSettings.getF32("MaxSelectDistance");
     select_dist_squared = select_dist_squared * select_dist_squared;
 
-    BOOL deselect = (mask == MASK_CONTROL);
+    bool deselect = (mask == MASK_CONTROL);
     S32 left =  llmin(x, mDragStartX);
     S32 right = llmax(x, mDragStartX);
     S32 top =   llmax(y, mDragStartY);
@@ -94,16 +94,16 @@ void LLToolSelectRect::handleRectangleSelection(S32 x, S32 y, MASK mask)
     S32 width = right - left + 1;
     S32 height = top - bottom + 1;
 
-    BOOL grow_selection = FALSE;
-    BOOL shrink_selection = FALSE;
+    bool grow_selection = false;
+    bool shrink_selection = false;
 
     if (height > mDragLastHeight || width > mDragLastWidth)
     {
-        grow_selection = TRUE;
+        grow_selection = true;
     }
     if (height < mDragLastHeight || width < mDragLastWidth)
     {
-        shrink_selection = TRUE;
+        shrink_selection = true;
     }
 
     if (!grow_selection && !shrink_selection)
@@ -122,7 +122,7 @@ void LLToolSelectRect::handleRectangleSelection(S32 x, S32 y, MASK mask)
     gGL.matrixMode(LLRender::MM_PROJECTION);
     gGL.pushMatrix();
 
-    BOOL limit_select_distance = gSavedSettings.getBOOL("LimitSelectDistance");
+    bool limit_select_distance = gSavedSettings.getBOOL("LimitSelectDistance");
     if (limit_select_distance)
     {
         // ...select distance from control
@@ -187,7 +187,7 @@ void LLToolSelectRect::handleRectangleSelection(S32 x, S32 y, MASK mask)
                 LLSpatialPartition* part = region->getSpatialPartition(i);
                 if (part)
                 {
-                    part->cull(*LLViewerCamera::getInstance(), &potentials, TRUE);
+                    part->cull(*LLViewerCamera::getInstance(), &potentials, true);
                 }
             }
         }
@@ -605,7 +605,7 @@ void LLViewerParcelMgr::renderHighlightSegments(const U8* segments, LLViewerRegi
 }
 
 
-void LLViewerParcelMgr::renderCollisionSegments(U8* segments, BOOL use_pass, LLViewerRegion* regionp)
+void LLViewerParcelMgr::renderCollisionSegments(U8* segments, bool use_pass, LLViewerRegion* regionp)
 {
 
     S32 x, y;
@@ -744,7 +744,7 @@ void LLViewerParcelMgr::renderCollisionSegments(U8* segments, BOOL use_pass, LLV
 void LLViewerParcelMgr::resetCollisionTimer()
 {
     mCollisionTimer.reset();
-    mRenderCollision = TRUE;
+    mRenderCollision = true;
 }
 
 void draw_line_cube(F32 width, const LLVector3& center)
@@ -869,7 +869,7 @@ void LLViewerObjectList::renderObjectBeacons()
             }
             LLHUDText *hud_textp = (LLHUDText *)LLHUDObject::addHUDObject(LLHUDObject::LL_HUD_TEXT);
 
-            hud_textp->setZCompare(FALSE);
+            hud_textp->setZCompare(false);
             LLColor4 color;
             color = debug_beacon.mTextColor;
             color.mV[3] *= 1.f;
@@ -939,7 +939,7 @@ public:
     {
         // takes (count, pointer)
         // &vector[0] gets pointer to contiguous array
-        LLImageGL::generateTextures(source.size(), &source[0]);
+        LLImageGL::generateTextures(static_cast<S32>(source.size()), &source[0]);
     }
 
     ~TextureHolder()
@@ -950,7 +950,7 @@ public:
                 texUnit->unbind(LLTexUnit::TT_TEXTURE);
         }
         // ensure that we delete these textures regardless of how we exit
-        LLImageGL::deleteTextures(source.size(), &source[0]);
+        LLImageGL::deleteTextures(static_cast<S32>(source.size()), &source[0]);
     }
 
     bool bind(U32 index)
@@ -1009,7 +1009,7 @@ F32 gpu_benchmark()
         gBenchmarkProgram.mShaderFiles.push_back(std::make_pair("interface/benchmarkV.glsl", GL_VERTEX_SHADER));
         gBenchmarkProgram.mShaderFiles.push_back(std::make_pair("interface/benchmarkF.glsl", GL_FRAGMENT_SHADER));
         gBenchmarkProgram.mShaderLevel = 1;
-        if (!gBenchmarkProgram.createShader(NULL, NULL))
+        if (!gBenchmarkProgram.createShader())
         {
             return -1.f;
         }
diff --git a/indra/newview/llgltfmateriallist.cpp b/indra/newview/llgltfmateriallist.cpp
index 4c9dc8f7cd..215f3dd3a7 100644
--- a/indra/newview/llgltfmateriallist.cpp
+++ b/indra/newview/llgltfmateriallist.cpp
@@ -47,9 +47,6 @@
 #include "tinygltf/tiny_gltf.h"
 #include <strstream>
 
-#include "json/reader.h"
-#include "json/value.h"
-
 #include <unordered_set>
 
 LLGLTFMaterialList gGLTFMaterialList;
@@ -76,7 +73,7 @@ static bool is_valid_update(const LLSD& data)
         ++count;
     }
     else
-    { 
+    {
         LL_WARNS() << "Missing required parameter: object_id" << LL_ENDL;
         return false;
     }
@@ -96,7 +93,7 @@ static bool is_valid_update(const LLSD& data)
         ++count;
     }
     else
-    { 
+    {
         LL_WARNS() << "Missing required parameter: side" << LL_ENDL;
         return false;
     }
@@ -122,7 +119,7 @@ static bool is_valid_update(const LLSD& data)
     }
 
     if (count < 3)
-    { 
+    {
         LL_WARNS() << "Only specified object_id and side, update won't actually change anything and is just noise" << LL_ENDL;
         return false;
     }
@@ -176,7 +173,7 @@ void LLGLTFMaterialList::applyOverrideMessage(LLMessageSystem* msg, const std::s
     LLSDSerialize::fromNotation(data, str, data_in.length());
 
     const LLHost& host = msg->getSender();
-    
+
     LLViewerRegion* region = LLWorld::instance().getRegion(host);
     llassert(region);
 
@@ -202,14 +199,14 @@ void LLGLTFMaterialList::applyOverrideMessage(LLMessageSystem* msg, const std::s
         bool has_te[MAX_TES] = { false };
 
         if (tes.isArray()) // NOTE: if no "te" array exists, this is a malformed message (null out all overrides will come in as an empty te array)
-        { 
+        {
             LLGLTFOverrideCacheEntry cache;
             cache.mLocalId = local_id;
             cache.mObjectId = id;
             cache.mRegionHandle = region->getHandle();
 
-            U32 count = llmin(tes.size(), MAX_TES);
-            for (U32 i = 0; i < count; ++i)
+            auto count = llmin(tes.size(), MAX_TES);
+            for (size_t i = 0; i < count; ++i)
             {
                 LLGLTFMaterial* mat = new LLGLTFMaterial(); // setTEGLTFMaterialOverride and cache will take ownership
                 mat->applyOverrideLLSD(od[i]);
@@ -255,7 +252,7 @@ void LLGLTFMaterialList::queueOverrideUpdate(const LLUUID& id, S32 side, LLGLTFM
 {
 #if 0
     override_list_t& overrides = mQueuedOverrides[id];
-    
+
     if (overrides.size() < side + 1)
     {
         overrides.resize(side + 1);
@@ -375,7 +372,7 @@ void LLGLTFMaterialList::queueUpdate(const LLSD& data)
     {
         sUpdates = LLSD::emptyArray();
     }
-    
+
     sUpdates[sUpdates.size()] = data;
 }
 
@@ -383,7 +380,7 @@ void LLGLTFMaterialList::flushUpdates(void(*done_callback)(bool))
 {
     LLSD& data = sUpdates;
 
-    S32 i = data.size();
+    auto i = data.size();
 
     for (ModifyMaterialData& e : sModifyQueue)
     {
@@ -395,7 +392,7 @@ void LLGLTFMaterialList::flushUpdates(void(*done_callback)(bool))
 
         data[i]["object_id"] = e.object_id;
         data[i]["side"] = e.side;
-         
+
         if (e.has_override)
         {
             data[i]["gltf_json"] = e.override_data.asJSON();
@@ -494,7 +491,7 @@ void LLGLTFMaterialList::onAssetLoadComplete(const LLUUID& id, LLAssetType::ETyp
                 }
 
                 buffer.resize(size);
-                file.read((U8*)&buffer[0], buffer.size());
+                file.read((U8*)&buffer[0], static_cast<S32>(buffer.size()));
             }
 
             {
@@ -503,7 +500,7 @@ void LLGLTFMaterialList::onAssetLoadComplete(const LLUUID& id, LLAssetType::ETyp
                 LLSD asset;
 
                 // read file into buffer
-                std::istrstream str(&buffer[0], buffer.size());
+                std::istrstream str(&buffer[0], static_cast<S32>(buffer.size()));
 
                 if (LLSDSerialize::deserialize(asset, str, buffer.size()))
                 {
@@ -520,7 +517,7 @@ void LLGLTFMaterialList::onAssetLoadComplete(const LLUUID& id, LLAssetType::ETyp
                                 LL_PROFILE_ZONE_SCOPED;
                                 tinygltf::TinyGLTF gltf;
 
-                                if (!gltf.LoadASCIIFromString(&asset_data->mModelIn, &error_msg, &warn_msg, data.c_str(), data.length(), ""))
+                                if (!gltf.LoadASCIIFromString(&asset_data->mModelIn, &error_msg, &warn_msg, data.c_str(), static_cast<U32>(data.length()), ""))
                                 {
                                     LL_WARNS("GLTF") << "Failed to decode material asset: "
                                         << LL_NEWLINE
@@ -581,7 +578,7 @@ LLFetchedGLTFMaterial* LLGLTFMaterialList::getMaterial(const LLUUID& id)
 
             gAssetStorage->getAssetData(id, LLAssetType::AT_MATERIAL, onAssetLoadComplete, (void*)user_data);
         }
-        
+
         return mat;
     }
 
diff --git a/indra/newview/llgltfmateriallist.h b/indra/newview/llgltfmateriallist.h
index 6eab86ff0a..982538f106 100644
--- a/indra/newview/llgltfmateriallist.h
+++ b/indra/newview/llgltfmateriallist.h
@@ -79,14 +79,14 @@ public:
     static void flushUpdates(void(*done_callback)(bool) = nullptr);
 
     static void addSelectionUpdateCallback(void(*update_callback)(const LLUUID& object_id, S32 side));
-    
+
     // Queue an explicit LLSD ModifyMaterialParams update apply given override data
     //  overrides -- LLSD map (or array of maps) in the format:
     //      object_id   UUID(required)      id of object
     //      side        integer(required)   TE index of face to set, or -1 for all faces
     //      gltf_json   string(optional)    override data to set, empty string nulls out override data, omissions of this parameter keeps existing data
     //      asset_id    UUID(optional)      id of material asset to set, omission of this parameter keeps existing material asset id
-    //    
+    //
     // NOTE: Unless you already have a gltf_json string you want to send, strongly prefer using queueModify
     // If the queue/flush API is insufficient, extend it.
     static void queueUpdate(const LLSD& data);
diff --git a/indra/newview/llgltfmaterialpreviewmgr.cpp b/indra/newview/llgltfmaterialpreviewmgr.cpp
index 730a625879..a198d1bdf4 100644
--- a/indra/newview/llgltfmaterialpreviewmgr.cpp
+++ b/indra/newview/llgltfmaterialpreviewmgr.cpp
@@ -118,7 +118,7 @@ namespace
             }
             else
             {
-                img = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+                img = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
             }
         }
         if (img)
@@ -185,7 +185,7 @@ namespace
 };  // namespace
 
 LLGLTFPreviewTexture::LLGLTFPreviewTexture(LLPointer<LLFetchedGLTFMaterial> material, S32 width)
-    : LLViewerDynamicTexture(width, width, 4, EOrder::ORDER_MIDDLE, FALSE)
+    : LLViewerDynamicTexture(width, width, 4, EOrder::ORDER_MIDDLE, false)
     , mGLTFMaterial(material)
 {
 }
@@ -196,7 +196,7 @@ LLPointer<LLGLTFPreviewTexture> LLGLTFPreviewTexture::create(LLPointer<LLFetched
     return new LLGLTFPreviewTexture(material, LLPipeline::MAX_BAKE_WIDTH);
 }
 
-BOOL LLGLTFPreviewTexture::needsRender()
+bool LLGLTFPreviewTexture::needsRender()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
 
@@ -211,7 +211,7 @@ BOOL LLGLTFPreviewTexture::needsRender()
     return false;
 }
 
-void LLGLTFPreviewTexture::preRender(BOOL clear_depth)
+void LLGLTFPreviewTexture::preRender(bool clear_depth)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
 
@@ -393,7 +393,7 @@ void fixup_shader_constants(LLGLSLShader& shader)
         const S32 channel = shader.getTextureChannel(LLShaderMgr::DEFERRED_SHADOW0+i);
         if (channel != -1)
         {
-            gGL.getTexUnit(channel)->bind(LLViewerFetchedTexture::sWhiteImagep, TRUE);
+            gGL.getTexUnit(channel)->bind(LLViewerFetchedTexture::sWhiteImagep, true);
         }
     }
 }
@@ -419,11 +419,11 @@ struct SetTemporarily
 
 }; // namespace
 
-BOOL LLGLTFPreviewTexture::render()
+bool LLGLTFPreviewTexture::render()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
 
-    if (!mShouldRender) { return FALSE; }
+    if (!mShouldRender) { return false; }
 
     glClearColor(0, 0, 0, 0);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -464,7 +464,7 @@ BOOL LLGLTFPreviewTexture::render()
     camera.lookAt(origin, object_position);
     camera.setAspect(mFullHeight / mFullWidth);
     const LLRect texture_rect(0, mFullHeight, mFullWidth, 0);
-    camera.setPerspective(NOT_FOR_SELECTION, texture_rect.mLeft, texture_rect.mBottom, texture_rect.getWidth(), texture_rect.getHeight(), FALSE, camera.getNear(), MAX_FAR_CLIP*2.f);
+    camera.setPerspective(NOT_FOR_SELECTION, texture_rect.mLeft, texture_rect.mBottom, texture_rect.getWidth(), texture_rect.getHeight(), false, camera.getNear(), MAX_FAR_CLIP*2.f);
 
     // Generate sphere object on-the-fly. Discard afterwards. (Vertex buffer is
     // discarded, but the sphere should be cached in LLVolumeMgr.)
@@ -554,10 +554,10 @@ BOOL LLGLTFPreviewTexture::render()
     gPipeline.mReflectionMapManager.forceDefaultProbeAndUpdateUniforms(false);
     gSavedSettings.set<S32>("RenderLocalLightCount", old_local_light_count);
 
-    return TRUE;
+    return true;
 }
 
-void LLGLTFPreviewTexture::postRender(BOOL success)
+void LLGLTFPreviewTexture::postRender(bool success)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_UI;
 
diff --git a/indra/newview/llgltfmaterialpreviewmgr.h b/indra/newview/llgltfmaterialpreviewmgr.h
index 981c8b0592..f320886157 100644
--- a/indra/newview/llgltfmaterialpreviewmgr.h
+++ b/indra/newview/llgltfmaterialpreviewmgr.h
@@ -40,10 +40,10 @@ public:
     // Width scales with size of material's textures
     static LLPointer<LLGLTFPreviewTexture> create(LLPointer<LLFetchedGLTFMaterial> material);
 
-    BOOL needsRender() override;
-    void preRender(BOOL clear_depth = TRUE) override;
-    BOOL render() override;
-    void postRender(BOOL success) override;
+    bool needsRender() override;
+    void preRender(bool clear_depth = true) override;
+    bool render() override;
+    void postRender(bool success) override;
 
     struct MaterialLoadLevels
     {
diff --git a/indra/newview/llgroupactions.cpp b/indra/newview/llgroupactions.cpp
index 58cb1a614d..ba9c9fa13f 100644
--- a/indra/newview/llgroupactions.cpp
+++ b/indra/newview/llgroupactions.cpp
@@ -118,7 +118,7 @@ public:
         }
 
         LLUUID group_id;
-        if (!group_id.set(tokens[0], FALSE))
+        if (!group_id.set(tokens[0], false))
         {
             return false;
         }
@@ -186,7 +186,7 @@ public:
             }
             else if (!gdatap->isMemberDataComplete())
             {
-                LL_WARNS() << "LLGroupMgr::getInstance()->getGroupData()->isMemberDataComplete() was FALSE" << LL_ENDL;
+                LL_WARNS() << "LLGroupMgr::getInstance()->getGroupData()->isMemberDataComplete() was false" << LL_ENDL;
                 processGroupData();
                 mRequestProcessed = true;
             }
@@ -425,7 +425,7 @@ void LLGroupActions::show(const LLUUID &group_id, bool expand_notices_tab)
     LLFloater *floater = LLFloaterReg::getTypedInstance<LLFloaterSidePanelContainer>("people");
     if (!floater->isFrontmost())
     {
-        floater->setVisibleAndFrontmost(TRUE, params);
+        floater->setVisibleAndFrontmost(true, params);
     }
 }
 
diff --git a/indra/newview/llgrouplist.cpp b/indra/newview/llgrouplist.cpp
index 38b2f4adc8..7659e5f082 100644
--- a/indra/newview/llgrouplist.cpp
+++ b/indra/newview/llgrouplist.cpp
@@ -163,9 +163,9 @@ void LLGroupList::draw()
 }
 
 // virtual
-BOOL LLGroupList::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLGroupList::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLUICtrl::handleRightMouseDown(x, y, mask);
+    bool handled = LLUICtrl::handleRightMouseDown(x, y, mask);
 
     if (mForAgent)
     {
@@ -182,9 +182,9 @@ BOOL LLGroupList::handleRightMouseDown(S32 x, S32 y, MASK mask)
 }
 
 // virtual
-BOOL LLGroupList::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLGroupList::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLView::handleDoubleClick(x, y, mask);
+    bool handled = LLView::handleDoubleClick(x, y, mask);
     // Handle double click only for the selected item in the list, skip clicks on empty space.
     if (handled)
     {
@@ -223,7 +223,7 @@ void LLGroupList::refresh()
     if (mForAgent)
     {
         const LLUUID&       highlight_id    = gAgent.getGroupID();
-        S32                 count           = gAgent.mGroups.size();
+        S32                 count           = static_cast<S32>(gAgent.mGroups.size());
         LLUUID              id;
         bool                have_filter     = !mNameFilter.empty();
 
@@ -426,7 +426,7 @@ LLGroupListItem::~LLGroupListItem()
 }
 
 //virtual
-BOOL  LLGroupListItem::postBuild()
+bool  LLGroupListItem::postBuild()
 {
     mGroupIcon = getChild<LLGroupIconCtrl>("group_icon");
     mGroupNameBox = getChild<LLTextBox>("group_name");
@@ -457,7 +457,7 @@ BOOL  LLGroupListItem::postBuild()
     // have icons of different sizes so we need to figure it per file.
     mIconWidth = mGroupNameBox->getRect().mLeft - mGroupIcon->getRect().mLeft;
 
-    return TRUE;
+    return true;
 }
 
 //virtual
@@ -482,9 +482,9 @@ void LLGroupListItem::onMouseEnter(S32 x, S32 y, MASK mask)
             {
                 if (mVisibilityHideBtn)
                 {
-                    mVisibilityHideBtn->setVisible(agent_gdatap.mListInProfile);
-                    mVisibilityShowBtn->setVisible(!agent_gdatap.mListInProfile);
-                }
+                mVisibilityHideBtn->setVisible(agent_gdatap.mListInProfile);
+                mVisibilityShowBtn->setVisible(!agent_gdatap.mListInProfile);
+            }
                 mNoticesBtn->setVisible(true);
             }
         }
@@ -544,7 +544,7 @@ void LLGroupListItem::setGroupIconID(const LLUUID& group_icon_id)
 void LLGroupListItem::setGroupIconVisible(bool visible)
 {
     // Already done? Then do nothing.
-    if (mGroupIcon->getVisible() == (BOOL)visible)
+    if (mGroupIcon->getVisible() == (bool)visible)
         return;
 
     // Show/hide the group icon.
diff --git a/indra/newview/llgrouplist.h b/indra/newview/llgrouplist.h
index 0e2dcf5fb3..19d4e82a93 100644
--- a/indra/newview/llgrouplist.h
+++ b/indra/newview/llgrouplist.h
@@ -60,8 +60,8 @@ public:
     void enableForAgent(bool show_icons);
 
     virtual void draw(); // from LLView
-    /*virtual*/ BOOL handleRightMouseDown(S32 x, S32 y, MASK mask); // from LLView
-    /*virtual*/ BOOL handleDoubleClick(S32 x, S32 y, MASK mask); // from LLView
+    /*virtual*/ bool handleRightMouseDown(S32 x, S32 y, MASK mask); // from LLView
+    /*virtual*/ bool handleDoubleClick(S32 x, S32 y, MASK mask); // from LLView
 
     void setNameFilter(const std::string& filter);
     void toggleIcons();
@@ -103,7 +103,7 @@ class LLGroupListItem : public LLPanel
 public:
     LLGroupListItem(bool for_agent, bool show_icons);
     ~LLGroupListItem();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void setValue(const LLSD& value);
     void onMouseEnter(S32 x, S32 y, MASK mask);
     void onMouseLeave(S32 x, S32 y, MASK mask);
diff --git a/indra/newview/llgroupmgr.cpp b/indra/newview/llgroupmgr.cpp
index ceb3c63bc7..100aacb8ac 100644
--- a/indra/newview/llgroupmgr.cpp
+++ b/indra/newview/llgroupmgr.cpp
@@ -93,7 +93,7 @@ LLGroupMemberData::LLGroupMemberData(const LLUUID& id,
                                         U64 agent_powers,
                                         const std::string& title,
                                         const std::string& online_status,
-                                        BOOL is_owner) :
+                                        bool is_owner) :
     mID(id),
     mContribution(contribution),
     mAgentPowers(agent_powers),
@@ -137,7 +137,7 @@ LLGroupRoleData::LLGroupRoleData(const LLUUID& role_id,
                                 const S32 member_count) :
     mRoleID(role_id),
     mMemberCount(member_count),
-    mMembersNeedsSort(FALSE)
+    mMembersNeedsSort(false)
 {
     mRoleData.mRoleName = role_name;
     mRoleData.mRoleTitle = role_title;
@@ -152,7 +152,7 @@ LLGroupRoleData::LLGroupRoleData(const LLUUID& role_id,
     mRoleID(role_id),
     mRoleData(role_data),
     mMemberCount(member_count),
-    mMembersNeedsSort(FALSE)
+    mMembersNeedsSort(false)
 {
 
 }
@@ -162,20 +162,20 @@ LLGroupRoleData::~LLGroupRoleData()
 }
 
 S32 LLGroupRoleData::getMembersInRole(uuid_vec_t members,
-                                      BOOL needs_sort)
+                                      bool needs_sort)
 {
     if (mRoleID.isNull())
     {
         // This is the everyone role, just return the size of members,
         // because everyone is in the everyone role.
-        return members.size();
+        return static_cast<S32>(members.size());
     }
 
     // Sort the members list, if needed.
     if (mMembersNeedsSort)
     {
         std::sort(mMemberIDs.begin(), mMemberIDs.end());
-        mMembersNeedsSort = FALSE;
+        mMembersNeedsSort = false;
     }
     if (needs_sort)
     {
@@ -184,7 +184,7 @@ S32 LLGroupRoleData::getMembersInRole(uuid_vec_t members,
     }
 
     // Return the number of members in the intersection.
-    S32 max_size = llmin( members.size(), mMemberIDs.size() );
+    auto max_size = llmin( members.size(), mMemberIDs.size() );
     uuid_vec_t in_role( max_size );
     uuid_vec_t::iterator in_role_end;
     in_role_end = std::set_intersection(mMemberIDs.begin(), mMemberIDs.end(),
@@ -195,7 +195,7 @@ S32 LLGroupRoleData::getMembersInRole(uuid_vec_t members,
 
 void LLGroupRoleData::addMember(const LLUUID& member)
 {
-    mMembersNeedsSort = TRUE;
+    mMembersNeedsSort = true;
     mMemberIDs.push_back(member);
 }
 
@@ -205,7 +205,7 @@ bool LLGroupRoleData::removeMember(const LLUUID& member)
 
     if (it != mMemberIDs.end())
     {
-        mMembersNeedsSort = TRUE;
+        mMembersNeedsSort = true;
         mMemberIDs.erase(it);
         return true;
     }
@@ -215,7 +215,7 @@ bool LLGroupRoleData::removeMember(const LLUUID& member)
 
 void LLGroupRoleData::clearMembers()
 {
-    mMembersNeedsSort = FALSE;
+    mMembersNeedsSort = false;
     mMemberIDs.clear();
 }
 
@@ -226,13 +226,13 @@ void LLGroupRoleData::clearMembers()
 
 LLGroupMgrGroupData::LLGroupMgrGroupData(const LLUUID& id) :
     mID(id),
-    mShowInList(TRUE),
-    mOpenEnrollment(FALSE),
+    mShowInList(true),
+    mOpenEnrollment(false),
     mMembershipFee(0),
-    mAllowPublish(FALSE),
-    mListInProfile(FALSE),
-    mMaturePublish(FALSE),
-    mChanged(FALSE),
+    mAllowPublish(false),
+    mListInProfile(false),
+    mMaturePublish(false),
+    mChanged(false),
     mMemberCount(0),
     mRoleCount(0),
     mReceivedRoleMemberPairs(0),
@@ -252,7 +252,7 @@ void LLGroupMgrGroupData::setAccessed()
     mAccessTime = (F32)LLFrameTimer::getTotalSeconds();
 }
 
-BOOL LLGroupMgrGroupData::getRoleData(const LLUUID& role_id, LLRoleData& role_data)
+bool LLGroupMgrGroupData::getRoleData(const LLUUID& role_id, LLRoleData& role_data)
 {
     role_data_map_t::const_iterator it;
 
@@ -260,10 +260,10 @@ BOOL LLGroupMgrGroupData::getRoleData(const LLUUID& role_id, LLRoleData& role_da
     it = mRoleChanges.find(role_id);
     if (it != mRoleChanges.end())
     {
-        if ((*it).second.mChangeType == RC_DELETE) return FALSE;
+        if ((*it).second.mChangeType == RC_DELETE) return false;
 
         role_data = (*it).second;
-        return TRUE;
+        return true;
     }
 
     // Ok, no changes, hasn't been deleted, isn't a new role, just find the role.
@@ -271,11 +271,11 @@ BOOL LLGroupMgrGroupData::getRoleData(const LLUUID& role_id, LLRoleData& role_da
     if (rit != mRoles.end())
     {
         role_data = (*rit).second->getRoleData();
-        return TRUE;
+        return true;
     }
 
     // This role must not exist.
-    return FALSE;
+    return false;
 }
 
 
@@ -337,7 +337,7 @@ void LLGroupMgrGroupData::setRoleData(const LLUUID& role_id, LLRoleData role_dat
     }
 }
 
-BOOL LLGroupMgrGroupData::pendingRoleChanges()
+bool LLGroupMgrGroupData::pendingRoleChanges()
 {
     return (!mRoleChanges.empty());
 }
@@ -517,7 +517,7 @@ bool LLGroupMgrGroupData::changeRoleMember(const LLUUID& role_id,
 
         //TODO move this into addrole function
         //see if they added someone to the owner role and update isOwner
-        gmd->mIsOwner = (role_id == mOwnerRole) ? TRUE : gmd->mIsOwner;
+        gmd->mIsOwner = (role_id == mOwnerRole) ? true : gmd->mIsOwner;
     }
     else if (RMC_REMOVE == rmc)
     {
@@ -526,7 +526,7 @@ bool LLGroupMgrGroupData::changeRoleMember(const LLUUID& role_id,
         gmd->removeRole(role_id);
 
         //see if they removed someone from the owner role and update isOwner
-        gmd->mIsOwner = (role_id == mOwnerRole) ? FALSE : gmd->mIsOwner;
+        gmd->mIsOwner = (role_id == mOwnerRole) ? false : gmd->mIsOwner;
     }
 
     lluuid_pair role_member;
@@ -568,7 +568,7 @@ bool LLGroupMgrGroupData::changeRoleMember(const LLUUID& role_id,
 
     recalcAgentPowers(member_id);
 
-    mChanged = TRUE;
+    mChanged = true;
     return true;
 }
 
@@ -980,7 +980,7 @@ void LLGroupMgr::processGroupMembersReply(LLMessageSystem* msg, void** data)
         std::string online_status;
         std::string title;
         U64 agent_powers = 0;
-        BOOL is_owner = FALSE;
+        bool is_owner = false;
 
         S32 num_members = msg->getNumberOfBlocksFast(_PREHASH_MemberData);
         for (S32 i = 0; i < num_members; i++)
@@ -1049,7 +1049,7 @@ void LLGroupMgr::processGroupMembersReply(LLMessageSystem* msg, void** data)
         }
     }
 
-    group_datap->mChanged = TRUE;
+    group_datap->mChanged = true;
     LLGroupMgr::getInstance()->notifyObservers(GC_MEMBER_DATA);
 }
 
@@ -1075,7 +1075,7 @@ void LLGroupMgr::processGroupPropertiesReply(LLMessageSystem* msg, void** data)
     LLUUID group_id;
     std::string name;
     std::string charter;
-    BOOL    show_in_list = FALSE;
+    bool    show_in_list = false;
     LLUUID  founder_id;
     U64     powers_mask = GP_NO_POWERS;
     S32     money = 0;
@@ -1083,11 +1083,11 @@ void LLGroupMgr::processGroupPropertiesReply(LLMessageSystem* msg, void** data)
     LLUUID  insignia_id;
     LLUUID  owner_role;
     U32     membership_fee = 0;
-    BOOL    open_enrollment = FALSE;
+    bool    open_enrollment = false;
     S32     num_group_members = 0;
     S32     num_group_roles = 0;
-    BOOL    allow_publish = FALSE;
-    BOOL    mature = FALSE;
+    bool    allow_publish = false;
+    bool    mature = false;
 
     msg->getUUIDFast(_PREHASH_GroupData, _PREHASH_GroupID, group_id );
     msg->getUUIDFast(_PREHASH_GroupData, _PREHASH_FounderID, founder_id);
@@ -1122,7 +1122,7 @@ void LLGroupMgr::processGroupPropertiesReply(LLMessageSystem* msg, void** data)
     group_datap->mRoleCount = num_group_roles + 1; // Add the everyone role.
 
     group_datap->mGroupPropertiesDataComplete = true;
-    group_datap->mChanged = TRUE;
+    group_datap->mChanged = true;
 
     properties_request_map_t::iterator request = LLGroupMgr::getInstance()->mPropRequests.find(group_id);
     if (request != LLGroupMgr::getInstance()->mPropRequests.end())
@@ -1219,7 +1219,7 @@ void LLGroupMgr::processGroupRoleDataReply(LLMessageSystem* msg, void** data)
         }
     }
 
-    group_datap->mChanged = TRUE;
+    group_datap->mChanged = true;
     LLGroupMgr::getInstance()->notifyObservers(GC_ROLE_DATA);
 }
 
@@ -1329,7 +1329,7 @@ void LLGroupMgr::processGroupRoleMembersReply(LLMessageSystem* msg, void** data)
         group_datap->mRoleMembersRequestID.setNull();
     }
 
-    group_datap->mChanged = TRUE;
+    group_datap->mChanged = true;
     LLGroupMgr::getInstance()->notifyObservers(GC_ROLE_MEMBER_DATA);
 
     if (group_datap->mPendingBanRequest)
@@ -1379,7 +1379,7 @@ void LLGroupMgr::processGroupTitlesReply(LLMessageSystem* msg, void** data)
         }
     }
 
-    group_datap->mChanged = TRUE;
+    group_datap->mChanged = true;
     LLGroupMgr::getInstance()->notifyObservers(GC_TITLES);
 }
 
@@ -1389,7 +1389,7 @@ void LLGroupMgr::processEjectGroupMemberReply(LLMessageSystem* msg, void ** data
     LL_DEBUGS("GrpMgr") << "processEjectGroupMemberReply" << LL_ENDL;
     LLUUID group_id;
     msg->getUUIDFast(_PREHASH_GroupData, _PREHASH_GroupID, group_id);
-    BOOL success;
+    bool success;
     msg->getBOOLFast(_PREHASH_EjectData, _PREHASH_Success, success);
 
     // If we had a failure, the group panel needs to be updated.
@@ -1404,7 +1404,7 @@ void LLGroupMgr::processJoinGroupReply(LLMessageSystem* msg, void ** data)
 {
     LL_DEBUGS("GrpMgr") << "processJoinGroupReply" << LL_ENDL;
     LLUUID group_id;
-    BOOL success;
+    bool success;
     msg->getUUIDFast(_PREHASH_GroupData, _PREHASH_GroupID, group_id);
     msg->getBOOLFast(_PREHASH_GroupData, _PREHASH_Success, success);
 
@@ -1424,7 +1424,7 @@ void LLGroupMgr::processLeaveGroupReply(LLMessageSystem* msg, void ** data)
 {
     LL_DEBUGS("GrpMgr") << "processLeaveGroupReply" << LL_ENDL;
     LLUUID group_id;
-    BOOL success;
+    bool success;
     msg->getUUIDFast(_PREHASH_GroupData, _PREHASH_GroupID, group_id);
     msg->getBOOLFast(_PREHASH_GroupData, _PREHASH_Success, success);
 
@@ -1443,7 +1443,7 @@ void LLGroupMgr::processLeaveGroupReply(LLMessageSystem* msg, void ** data)
 void LLGroupMgr::processCreateGroupReply(LLMessageSystem* msg, void ** data)
 {
     LLUUID group_id;
-    BOOL success;
+    bool success;
     std::string message;
 
     msg->getUUIDFast(_PREHASH_ReplyData, _PREHASH_GroupID, group_id );
@@ -1460,8 +1460,8 @@ void LLGroupMgr::processCreateGroupReply(LLMessageSystem* msg, void ** data)
         // This is so when we go to modify the group we will be able to do so.
         // This isn't actually too bad because real data will come down in 2 or 3 miliseconds and replace this.
         LLGroupData gd;
-        gd.mAcceptNotices = TRUE;
-        gd.mListInProfile = TRUE;
+        gd.mAcceptNotices = true;
+        gd.mListInProfile = true;
         gd.mContribution = 0;
         gd.mID = group_id;
         gd.mName = "new group";
@@ -1546,7 +1546,7 @@ void LLGroupMgr::notifyObservers(LLGroupChange gc)
             {
                 oi->second->changed(gc);
             }
-            gi->second->mChanged = FALSE;
+            gi->second->mChanged = false;
 
 
             // notify LLParticularGroupObserver
@@ -1685,7 +1685,7 @@ void LLGroupMgr::sendGroupRoleMembersRequest(const LLUUID& group_id)
             LL_INFOS("GrpMgr") << " Pending: " << (group_datap->mPendingRoleMemberRequest ? "Y" : "N")
                 << " MemberDataComplete: " << (group_datap->mMemberDataComplete ? "Y" : "N")
                 << " RoleDataComplete: " << (group_datap->mRoleDataComplete ? "Y" : "N") << LL_ENDL;
-            group_datap->mPendingRoleMemberRequest = TRUE;
+            group_datap->mPendingRoleMemberRequest = true;
             return;
         }
 
@@ -1744,11 +1744,11 @@ void LLGroupMgr::sendGroupTitleUpdate(const LLUUID& group_id, const LLUUID& titl
     {
         if (iter->mRoleID == title_role_id)
         {
-            iter->mSelected = TRUE;
+            iter->mSelected = true;
         }
         else if (iter->mSelected)
         {
-            iter->mSelected = FALSE;
+            iter->mSelected = false;
         }
     }
 }
@@ -1759,9 +1759,9 @@ void LLGroupMgr::sendCreateGroupRequest(const std::string& name,
                                         U8 show_in_list,
                                         const LLUUID& insignia,
                                         S32 membership_fee,
-                                        BOOL open_enrollment,
-                                        BOOL allow_publish,
-                                        BOOL mature_publish)
+                                        bool open_enrollment,
+                                        bool allow_publish,
+                                        bool mature_publish)
 {
     LLMessageSystem* msg = gMessageSystem;
     msg->newMessage("CreateGroupRequest");
@@ -1807,7 +1807,7 @@ void LLGroupMgr::sendUpdateGroupInfo(const LLUUID& group_id)
     gAgent.sendReliableMessage();
 
     // Not expecting a response, so let anyone else watching know the data has changed.
-    group_datap->mChanged = TRUE;
+    group_datap->mChanged = true;
     notifyObservers(GC_PROPERTIES);
 }
 
@@ -1853,7 +1853,7 @@ void LLGroupMgr::sendGroupRoleMemberChanges(const LLUUID& group_id)
     group_datap->mRoleMemberChanges.clear();
 
     // Not expecting a response, so let anyone else watching know the data has changed.
-    group_datap->mChanged = TRUE;
+    group_datap->mChanged = true;
     notifyObservers(GC_ROLE_MEMBER_DATA);
 }
 
@@ -2147,7 +2147,7 @@ void LLGroupMgr::processGroupBanRequest(const LLSD& content)
         gdatap->createBanEntry(ban_id, ban_data);
     }
 
-    gdatap->mChanged = TRUE;
+    gdatap->mChanged = true;
     LLGroupMgr::getInstance()->notifyObservers(GC_BANLIST);
 }
 
@@ -2251,7 +2251,7 @@ void LLGroupMgr::processCapGroupMembersRequest(const LLSD& content)
         LL_INFOS("GrpMgr") << "Received empty group members list for group id: " << group_id.asString() << LL_ENDL;
         // Set mMemberDataComplete for correct handling of empty responses. See MAINT-5237
         group_datap->mMemberDataComplete = true;
-        group_datap->mChanged = TRUE;
+        group_datap->mChanged = true;
         LLGroupMgr::getInstance()->notifyObservers(GC_MEMBER_DATA);
         return;
     }
@@ -2267,7 +2267,7 @@ void LLGroupMgr::processCapGroupMembersRequest(const LLSD& content)
     S32         contribution;
     U64         member_powers;
     // If this is changed to a bool, make sure to change the LLGroupMemberData constructor
-    BOOL        is_owner;
+    bool        is_owner;
 
     // Compute this once, rather than every time.
     U64 default_powers  = llstrtou64(defaults["default_powers"].asString().c_str(), NULL, 16);
@@ -2355,7 +2355,7 @@ void LLGroupMgr::processCapGroupMembersRequest(const LLSD& content)
         sendGroupRoleMembersRequest(group_id);
     }
 
-    group_datap->mChanged = TRUE;
+    group_datap->mChanged = true;
     notifyObservers(GC_MEMBER_DATA);
 
 }
@@ -2371,7 +2371,7 @@ void LLGroupMgr::sendGroupRoleChanges(const LLUUID& group_id)
         group_datap->sendRoleChanges();
 
         // Not expecting a response, so let anyone else watching know the data has changed.
-        group_datap->mChanged = TRUE;
+        group_datap->mChanged = true;
         notifyObservers(GC_ROLE_DATA);
     }
 }
@@ -2389,7 +2389,7 @@ bool LLGroupMgr::parseRoleActions(const std::string& xml_filename)
 {
     LLXMLNodePtr root;
 
-    BOOL success = LLUICtrlFactory::getLayeredXMLNode(xml_filename, root);
+    bool success = LLUICtrlFactory::getLayeredXMLNode(xml_filename, root);
 
     if (!success || !root || !root->hasName( "role_actions" ))
     {
diff --git a/indra/newview/llgroupmgr.h b/indra/newview/llgroupmgr.h
index c12a0b019a..18efae7654 100644
--- a/indra/newview/llgroupmgr.h
+++ b/indra/newview/llgroupmgr.h
@@ -84,14 +84,14 @@ public:
                         U64 agent_powers,
                         const std::string& title,
                         const std::string& online_status,
-                        BOOL is_owner);
+                        bool is_owner);
 
     ~LLGroupMemberData();
 
     const LLUUID& getID() const { return mID; }
     S32 getContribution() const { return mContribution; }
     U64 getAgentPowers() const { return mAgentPowers; }
-    BOOL isOwner() const { return mIsOwner; }
+    bool isOwner() const { return mIsOwner; }
     const std::string& getTitle() const { return mTitle; }
     const std::string& getOnlineStatus() const { return mOnlineStatus; }
     void addRole(const LLUUID& role, LLGroupRoleData* rd);
@@ -100,7 +100,7 @@ public:
     role_list_t::iterator roleBegin() { return mRolesList.begin(); }
     role_list_t::iterator roleEnd() { return mRolesList.end(); }
 
-    BOOL isInRole(const LLUUID& role_id) { return (mRolesList.find(role_id) != mRolesList.end()); }
+    bool isInRole(const LLUUID& role_id) { return (mRolesList.find(role_id) != mRolesList.end()); }
 
 private:
     LLUUID  mID;
@@ -108,7 +108,7 @@ private:
     U64     mAgentPowers;
     std::string mTitle;
     std::string mOnlineStatus;
-    BOOL    mIsOwner;
+    bool    mIsOwner;
     role_list_t mRolesList;
 };
 
@@ -150,8 +150,8 @@ public:
     const LLUUID& getID() const { return mRoleID; }
 
     const uuid_vec_t& getRoleMembers() const { return mMemberIDs; }
-    S32 getMembersInRole(uuid_vec_t members, BOOL needs_sort = TRUE);
-    S32 getTotalMembersInRole() { return mMemberCount ? mMemberCount : mMemberIDs.size(); } //FIXME: Returns 0 for Everyone role when Member list isn't yet loaded, see MAINT-5225
+    S32 getMembersInRole(uuid_vec_t members, bool needs_sort = true);
+    S32 getTotalMembersInRole() { return mMemberCount ? mMemberCount : static_cast<S32>(mMemberIDs.size()); } //FIXME: Returns 0 for Everyone role when Member list isn't yet loaded, see MAINT-5225
 
     LLRoleData getRoleData() const { return mRoleData; }
     void setRoleData(LLRoleData data) { mRoleData = data; }
@@ -169,7 +169,7 @@ public:
 
 protected:
     LLGroupRoleData()
-    : mMemberCount(0), mMembersNeedsSort(FALSE) {}
+    : mMemberCount(0), mMembersNeedsSort(false) {}
 
     LLUUID mRoleID;
     LLRoleData  mRoleData;
@@ -178,7 +178,7 @@ protected:
     S32 mMemberCount;
 
 private:
-    BOOL mMembersNeedsSort;
+    bool mMembersNeedsSort;
 };
 
 struct LLRoleMemberChange
@@ -221,7 +221,7 @@ struct LLGroupTitle
 {
     std::string mTitle;
     LLUUID      mRoleID;
-    BOOL        mSelected;
+    bool        mSelected;
 };
 
 class LLGroupMgrGroupData
@@ -234,11 +234,11 @@ public:
 
     const LLUUID& getID() { return mID; }
 
-    BOOL getRoleData(const LLUUID& role_id, LLRoleData& role_data);
+    bool getRoleData(const LLUUID& role_id, LLRoleData& role_data);
     void setRoleData(const LLUUID& role_id, LLRoleData role_data);
     void createRole(const LLUUID& role_id, LLRoleData role_data);
     void deleteRole(const LLUUID& role_id);
-    BOOL pendingRoleChanges();
+    bool pendingRoleChanges();
 
     void addRolePower(const LLUUID& role_id, U64 power);
     void removeRolePower(const LLUUID& role_id, U64 power);
@@ -297,15 +297,15 @@ public:
     LLUUID              mOwnerRole;
     std::string         mName;
     std::string         mCharter;
-    BOOL                mShowInList;
+    bool                mShowInList;
     LLUUID              mInsigniaID;
     LLUUID              mFounderID;
-    BOOL                mOpenEnrollment;
+    bool                mOpenEnrollment;
     S32                 mMembershipFee;
-    BOOL                mAllowPublish;
-    BOOL                mListInProfile;
-    BOOL                mMaturePublish;
-    BOOL                mChanged;
+    bool                mAllowPublish;
+    bool                mListInProfile;
+    bool                mMaturePublish;
+    bool                mChanged;
     S32                 mMemberCount;
     S32                 mRoleCount;
 
@@ -398,9 +398,9 @@ public:
                                        U8 show_in_list,
                                        const LLUUID& insignia,
                                        S32 membership_fee,
-                                       BOOL open_enrollment,
-                                       BOOL allow_publish,
-                                       BOOL mature_publish);
+                                       bool open_enrollment,
+                                       bool allow_publish,
+                                       bool mature_publish);
 
     static void sendGroupMemberJoin(const LLUUID& group_id);
     static void sendGroupMemberInvites(const LLUUID& group_id, std::map<LLUUID,LLUUID>& role_member_pairs);
diff --git a/indra/newview/llheroprobemanager.cpp b/indra/newview/llheroprobemanager.cpp
index efe72128d4..66ccdd2b32 100644
--- a/indra/newview/llheroprobemanager.cpp
+++ b/indra/newview/llheroprobemanager.cpp
@@ -42,8 +42,8 @@
 #include "llviewerjoystick.h"
 #include "llviewermediafocus.h"
 
-extern BOOL gCubeSnapshot;
-extern BOOL gTeleportDisplay;
+extern bool gCubeSnapshot;
+extern bool gTeleportDisplay;
 
 // get the next highest power of two of v (or v if v is already a power of two)
 //defined in llvertexbuffer.cpp
@@ -101,7 +101,7 @@ void LLHeroProbeManager::update()
         U32 count = log2((F32)res) + 0.5f;
 
         mMipChain.resize(count);
-        for (int i = 0; i < count; ++i)
+        for (U32 i = 0; i < count; ++i)
         {
             mMipChain[i].allocate(res, res, GL_RGBA16F);
             res /= 2;
@@ -188,18 +188,8 @@ void LLHeroProbeManager::update()
                 LLVector3(0, 0, -1)
             };
 
-            // Iterate through each face of the cube
-            for (int i = 0; i < 6; i++)
-            {
-                float cube_facing = fmax(-1, fmin(1.0f, cameraDirection * cubeFaces[i]));
-
-                cube_facing = 1 - cube_facing;
-
-                mFaceUpdateList[i] = ceilf(cube_facing * gPipeline.RenderHeroProbeConservativeUpdateMultiplier);
-            }
-
-            
             mProbes[0]->mOrigin = probe_pos;
+            mProbes[0]->mRadius = mNearestHero->getScale().magVec() * 0.5f;
         }
         else
         {
@@ -208,7 +198,7 @@ void LLHeroProbeManager::update()
 
         mHeroProbeStrength = 1;
     }
-}
+    }
 
 void LLHeroProbeManager::renderProbes()
 {
@@ -220,9 +210,10 @@ void LLHeroProbeManager::renderProbes()
 
     static LLCachedControl<S32> sDetail(gSavedSettings, "RenderHeroReflectionProbeDetail", -1);
     static LLCachedControl<S32> sLevel(gSavedSettings, "RenderHeroReflectionProbeLevel", 3);
+    static LLCachedControl<S32> sUpdateRate(gSavedSettings, "RenderHeroProbeUpdateRate", 0);
 
     F32 near_clip = 0.01f;
-    if (mNearestHero != nullptr && (gPipeline.RenderHeroProbeUpdateRate == 0 || (gFrameCount % gPipeline.RenderHeroProbeUpdateRate) == 0) &&
+    if (mNearestHero != nullptr &&
         !gTeleportDisplay && !gDisconnected && !LLAppViewer::instance()->logoutRequestSent())
     {
         LL_PROFILE_ZONE_NAMED_CATEGORY_DISPLAY("hpmu - realtime");
@@ -230,22 +221,38 @@ void LLHeroProbeManager::renderProbes()
         bool radiance_pass = gPipeline.mReflectionMapManager.isRadiancePass();
 
         gPipeline.mReflectionMapManager.mRadiancePass = true;
-        mRenderingMirror                              = true;
+        mRenderingMirror = true;
+
+        S32 rate = sUpdateRate;
+
+        // rate must be divisor of 6 (1, 2, 3, or 6)
+        if (rate < 1)
+        {
+            rate = 1;
+        }
+        else if (rate > 3)
+        {
+            rate = 6;
+        }
 
-        doOcclusion();
+        S32 face = gFrameCount % 6;
 
-        for (U32 j = 0; j < mProbes.size(); j++)
+        if (!mProbes.empty() && !mProbes[0].isNull() && !mProbes[0]->mOccluded)
         {
+            LL_PROFILE_ZONE_NUM(gFrameCount % rate);
+            LL_PROFILE_ZONE_NUM(rate);
+
             for (U32 i = 0; i < 6; ++i)
             {
-                if (mFaceUpdateList[i] > 0 && mCurrentProbeUpdateFrame % mFaceUpdateList[i] == 0)
-                {
-                    updateProbeFace(mProbes[j], i, mNearestHero->getReflectionProbeIsDynamic() && sDetail > 0, near_clip);
-                    mCurrentProbeUpdateFrame = 0;
+                if ((gFrameCount % rate) == (i % rate))
+                { // update 6/rate faces per frame
+                    LL_PROFILE_ZONE_NUM(i);
+                    updateProbeFace(mProbes[0], i, mNearestHero->getReflectionProbeIsDynamic() && sDetail > 0, near_clip);
                 }
             }
-            generateRadiance(mProbes[j]);
+            generateRadiance(mProbes[0]);
         }
+
         mRenderingMirror = false;
 
         gPipeline.mReflectionMapManager.mRadiancePass = radiance_pass;
@@ -253,8 +260,6 @@ void LLHeroProbeManager::renderProbes()
         mProbes[0]->mViewerObject = mNearestHero;
         mProbes[0]->autoAdjustOrigin();
     }
-
-    mCurrentProbeUpdateFrame++;
 }
 
 // Do the reflection map update render passes.
@@ -359,7 +364,8 @@ void LLHeroProbeManager::updateProbeFace(LLReflectionMap* probe, U32 face, bool
 
             res /= 2;
 
-            S32 mip = i - (mMipChain.size() - mips);
+            llassert(mMipChain.size() <= size_t(S32_MAX));
+            GLint mip = i - (S32(mMipChain.size()) - mips);
 
             if (mip >= 0)
             {
@@ -387,6 +393,7 @@ void LLHeroProbeManager::updateProbeFace(LLReflectionMap* probe, U32 face, bool
 // Useful when we may not always be rendering a full set of faces of the probe.
 void LLHeroProbeManager::generateRadiance(LLReflectionMap* probe)
 {
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_DISPLAY;
     S32 sourceIdx = mReflectionProbeCount;
 
     // Unlike the reflectionmap manager, all probes are considered "realtime" for hero probes.
@@ -487,7 +494,8 @@ void LLHeroProbeManager::updateUniforms()
         mHeroData.heroSphere.mV[3] = mProbes[0]->mRadius;
     }
 
-    mHeroData.heroMipCount = mMipChain.size();
+    llassert(mMipChain.size() <= size_t(S32_MAX));
+    mHeroData.heroMipCount = S32(mMipChain.size());
 }
 
 void LLHeroProbeManager::renderDebug()
@@ -592,7 +600,7 @@ void LLHeroProbeManager::doOcclusion()
 
     for (auto& probe : mProbes)
     {
-        if (probe != nullptr && probe != mDefaultProbe)
+        if (probe != nullptr)
         {
             probe->doOcclusion(eye);
         }
diff --git a/indra/newview/llheroprobemanager.h b/indra/newview/llheroprobemanager.h
index e45b0049b2..28852770c3 100644
--- a/indra/newview/llheroprobemanager.h
+++ b/indra/newview/llheroprobemanager.h
@@ -51,18 +51,18 @@ class alignas(16) LLHeroProbeManager
 {
     LL_ALIGN_NEW
 public:
-    enum class DetailLevel 
+    enum class DetailLevel
     {
         STATIC_ONLY = 0,
         STATIC_AND_DYNAMIC,
         REALTIME = 2
     };
 
-    // allocate an environment map of the given resolution 
+    // allocate an environment map of the given resolution
     LLHeroProbeManager();
     ~LLHeroProbeManager();
 
-    // release any GL state 
+    // release any GL state
     void cleanup();
 
     // maintain reflection probes
@@ -90,11 +90,11 @@ public:
     LLVector3 mMirrorPosition;
     LLVector3     mMirrorNormal;
     HeroProbeData mHeroData;
-    
+
 private:
     friend class LLPipeline;
     friend class LLReflectionMapManager;
-    
+
     // update UBO used for rendering (call only once per render pipe flush)
     void updateUniforms();
 
@@ -103,7 +103,7 @@ private:
     // render target for cube snapshots
     // used to generate mipmaps without doing a copy-to-texture
     LLRenderTarget mRenderTarget;
-    
+
     LLRenderTarget mHeroRenderTarget;
 
     std::vector<LLRenderTarget> mMipChain;
@@ -120,7 +120,7 @@ private:
     // update the specified face of the specified probe
     void updateProbeFace(LLReflectionMap* probe, U32 face, bool is_dynamic, F32 near_clip);
     void generateRadiance(LLReflectionMap *probe);
-    
+
     // list of active reflection maps
     std::vector<LLPointer<LLReflectionMap>> mProbes;
 
@@ -136,10 +136,10 @@ private:
 
     // resolution of reflection probes
     U32 mProbeResolution = 1024;
-    
+
     // maximum LoD of reflection probes (mip levels - 1)
     F32 mMaxProbeLOD = 6.f;
-    
+
     F32 mHeroProbeStrength = 1.f;
     bool mIsInTransition = false;
 
@@ -147,10 +147,7 @@ private:
     bool mReset = false;
 
     bool mRenderingMirror = false;
-    std::map<int, int> mFaceUpdateList;
-    
-    U32 mCurrentProbeUpdateFrame = 0;
-    
+
     std::vector<LLPointer<LLVOVolume>>                       mHeroVOList;
     LLPointer<LLVOVolume>                                 mNearestHero;
 
diff --git a/indra/newview/llhints.cpp b/indra/newview/llhints.cpp
index 1de2a64d72..d480274691 100644
--- a/indra/newview/llhints.cpp
+++ b/indra/newview/llhints.cpp
@@ -110,7 +110,7 @@ public:
 
     LLHintPopup(const Params&);
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     void onClickClose()
     {
@@ -180,7 +180,7 @@ LLHintPopup::LLHintPopup(const LLHintPopup::Params& p)
     }
 }
 
-BOOL LLHintPopup::postBuild()
+bool LLHintPopup::postBuild()
 {
     LLTextBox& hint_text = getChildRef<LLTextBox>("hint_text");
     hint_text.setText(mNotification->getMessage());
@@ -193,7 +193,7 @@ BOOL LLHintPopup::postBuild()
     reshape(getRect().getWidth(), getRect().getHeight() + delta_height);
     hint_text.reshape(hint_text.getRect().getWidth(), hint_text.getRect().getHeight() + delta_height);
 //  hint_text.translate(0, -delta_height);
-    return TRUE;
+    return true;
 }
 
 void LLHintPopup::draw()
diff --git a/indra/newview/llhudeffect.cpp b/indra/newview/llhudeffect.cpp
index f845284c8c..4d6636aa4c 100644
--- a/indra/newview/llhudeffect.cpp
+++ b/indra/newview/llhudeffect.cpp
@@ -42,9 +42,9 @@ LLHUDEffect::LLHUDEffect(const U8 type)
     mDuration(1.f),
     mColor()
 {
-    mNeedsSendToSim = FALSE;
-    mOriginatedHere = FALSE;
-    mDead = FALSE;
+    mNeedsSendToSim = false;
+    mOriginatedHere = false;
+    mDead = false;
 }
 
 LLHUDEffect::~LLHUDEffect()
@@ -94,23 +94,23 @@ void LLHUDEffect::setDuration(const F32 duration)
     mDuration = duration;
 }
 
-void LLHUDEffect::setNeedsSendToSim(const BOOL send_to_sim)
+void LLHUDEffect::setNeedsSendToSim(const bool send_to_sim)
 {
     mNeedsSendToSim = send_to_sim;
 }
 
-BOOL LLHUDEffect::getNeedsSendToSim() const
+bool LLHUDEffect::getNeedsSendToSim() const
 {
     return mNeedsSendToSim;
 }
 
 
-void LLHUDEffect::setOriginatedHere(const BOOL orig_here)
+void LLHUDEffect::setOriginatedHere(const bool orig_here)
 {
     mOriginatedHere = orig_here;
 }
 
-BOOL LLHUDEffect::getOriginatedHere() const
+bool LLHUDEffect::getOriginatedHere() const
 {
     return mOriginatedHere;
 }
@@ -122,7 +122,7 @@ void LLHUDEffect::getIDType(LLMessageSystem *mesgsys, S32 blocknum, LLUUID &id,
     mesgsys->getU8Fast(_PREHASH_Effect, _PREHASH_Type, type, blocknum);
 }
 
-BOOL LLHUDEffect::isDead() const
+bool LLHUDEffect::isDead() const
 {
     return mDead;
 }
diff --git a/indra/newview/llhudeffect.h b/indra/newview/llhudeffect.h
index e5f05599c9..cace745de6 100644
--- a/indra/newview/llhudeffect.h
+++ b/indra/newview/llhudeffect.h
@@ -40,17 +40,17 @@ class LLMessageSystem;
 class LLHUDEffect : public LLHUDObject
 {
 public:
-    void setNeedsSendToSim(const BOOL send_to_sim);
-    BOOL getNeedsSendToSim() const;
-    void setOriginatedHere(const BOOL orig_here);
-    BOOL getOriginatedHere() const;
+    void setNeedsSendToSim(const bool send_to_sim);
+    bool getNeedsSendToSim() const;
+    void setOriginatedHere(const bool orig_here);
+    bool getOriginatedHere() const;
 
     void setDuration(const F32 duration);
     void setColor(const LLColor4U &color);
     void setID(const LLUUID &id);
     const LLUUID &getID() const;
 
-    BOOL isDead() const;
+    bool isDead() const;
 
     friend class LLHUDManager;
 protected:
@@ -70,8 +70,8 @@ protected:
     F32         mDuration;
     LLColor4U   mColor;
 
-    BOOL        mNeedsSendToSim;
-    BOOL        mOriginatedHere;
+    bool        mNeedsSendToSim;
+    bool        mOriginatedHere;
 };
 
 #endif // LL_LLHUDEFFECT_H
diff --git a/indra/newview/llhudeffectbeam.cpp b/indra/newview/llhudeffectbeam.cpp
index b3e98ba561..74d0e0af0b 100644
--- a/indra/newview/llhudeffectbeam.cpp
+++ b/indra/newview/llhudeffectbeam.cpp
@@ -116,7 +116,7 @@ void LLHUDEffectBeam::packData(LLMessageSystem *mesgsys)
 void LLHUDEffectBeam::unpackData(LLMessageSystem *mesgsys, S32 blocknum)
 {
     LL_ERRS() << "Got beam!" << LL_ENDL;
-    BOOL use_target_object;
+    bool use_target_object;
     LLVector3d new_target;
     U8 packed_data[41];
 
diff --git a/indra/newview/llhudeffectlookat.cpp b/indra/newview/llhudeffectlookat.cpp
index eb49e53c86..c8b7e00776 100644
--- a/indra/newview/llhudeffectlookat.cpp
+++ b/indra/newview/llhudeffectlookat.cpp
@@ -42,7 +42,7 @@
 #include "llxmltree.h"
 
 
-BOOL LLHUDEffectLookAt::sDebugLookAt = FALSE;
+bool LLHUDEffectLookAt::sDebugLookAt = false;
 
 // packet layout
 const S32 SOURCE_AVATAR = 0;
@@ -138,11 +138,11 @@ static LLAttentionSet
     gGirlAttentions(GIRL_ATTS);
 
 
-static BOOL loadGender(LLXmlTreeNode* gender)
+static bool loadGender(LLXmlTreeNode* gender)
 {
     if( !gender)
     {
-        return FALSE;
+        return false;
     }
     std::string str;
     gender->getAttributeString("name", str);
@@ -162,7 +162,7 @@ static BOOL loadGender(LLXmlTreeNode* gender)
         else if(str == "select")       attention = &attentions[LOOKAT_TARGET_SELECT];
         else if(str == "focus")        attention = &attentions[LOOKAT_TARGET_FOCUS];
         else if(str == "mouselook")    attention = &attentions[LOOKAT_TARGET_MOUSELOOK];
-        else return FALSE;
+        else return false;
 
         F32 priority, timeout;
         attention_node->getAttributeF32("priority", priority);
@@ -171,30 +171,30 @@ static BOOL loadGender(LLXmlTreeNode* gender)
         attention->mPriority = priority;
         attention->mTimeout = timeout;
     }
-    return TRUE;
+    return true;
 }
 
-static BOOL loadAttentions()
+static bool loadAttentions()
 {
-    static BOOL first_time = TRUE;
+    static bool first_time = true;
     if( ! first_time)
     {
-        return TRUE; // maybe not ideal but otherwise it can continue to fail forever.
+        return true; // maybe not ideal but otherwise it can continue to fail forever.
     }
-    first_time = FALSE;
+    first_time = false;
 
     std::string filename;
     filename = gDirUtilp->getExpandedFilename(LL_PATH_CHARACTER,"attentions.xml");
     LLXmlTree xml_tree;
-    BOOL success = xml_tree.parseFile( filename, FALSE );
+    bool success = xml_tree.parseFile( filename, false );
     if( !success )
     {
-        return FALSE;
+        return false;
     }
     LLXmlTreeNode* root = xml_tree.getRoot();
     if( !root )
     {
-        return FALSE;
+        return false;
     }
 
     //-------------------------------------------------------------------------
@@ -203,7 +203,7 @@ static BOOL loadAttentions()
     if( !root->hasName( "linden_attentions" ) )
     {
         LL_WARNS() << "Invalid linden_attentions file header: " << filename << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     std::string version;
@@ -211,7 +211,7 @@ static BOOL loadAttentions()
     if( !root->getFastAttributeString( version_string, version ) || (version != "1.0") )
     {
         LL_WARNS() << "Invalid linden_attentions file version: " << version << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     //-------------------------------------------------------------------------
@@ -223,11 +223,11 @@ static BOOL loadAttentions()
     {
         if( !loadGender( child ) )
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -389,29 +389,29 @@ void LLHUDEffectLookAt::setTargetPosGlobal(const LLVector3d &target_pos_global)
 // setLookAt()
 // called by agent logic to set look at behavior locally, and propagate to sim
 //-----------------------------------------------------------------------------
-BOOL LLHUDEffectLookAt::setLookAt(ELookAtType target_type, LLViewerObject *object, LLVector3 position)
+bool LLHUDEffectLookAt::setLookAt(ELookAtType target_type, LLViewerObject *object, LLVector3 position)
 {
     if (!mSourceObject)
     {
-        return FALSE;
+        return false;
     }
 
     if (target_type >= LOOKAT_NUM_TARGETS)
     {
         LL_WARNS() << "Bad target_type " << (int)target_type << " - ignoring." << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // must be same or higher priority than existing effect
     if ((*mAttentions)[target_type].mPriority < (*mAttentions)[mTargetType].mPriority)
     {
-        return FALSE;
+        return false;
     }
 
     F32 current_time  = mTimer.getElapsedTimeF32();
 
     // type of lookat behavior or target object has changed
-    BOOL lookAtChanged = (target_type != mTargetType) || (object != mTargetObject);
+    bool lookAtChanged = (target_type != mTargetType) || (object != mTargetObject);
 
     // lookat position has moved a certain amount and we haven't just sent an update
     lookAtChanged = lookAtChanged || ((dist_vec_squared(position, mLastSentOffsetGlobal) > MIN_DELTAPOS_FOR_UPDATE_SQUARED) &&
@@ -422,7 +422,7 @@ BOOL LLHUDEffectLookAt::setLookAt(ELookAtType target_type, LLViewerObject *objec
         mLastSentOffsetGlobal = position;
         F32 timeout = (*mAttentions)[target_type].mTimeout;
         setDuration(timeout);
-        setNeedsSendToSim(TRUE);
+        setNeedsSendToSim(true);
     }
 
     if (target_type == LOOKAT_TARGET_CLEAR)
@@ -445,7 +445,7 @@ BOOL LLHUDEffectLookAt::setLookAt(ELookAtType target_type, LLViewerObject *objec
 
         update();
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -553,7 +553,7 @@ void LLHUDEffectLookAt::update()
         {
             clearLookAtTarget();
             // look at timed out (only happens on own avatar), so tell everyone
-            setNeedsSendToSim(TRUE);
+            setNeedsSendToSim(true);
         }
     }
 
@@ -610,7 +610,7 @@ bool LLHUDEffectLookAt::calcTargetPosition()
         {
             LLVOAvatar *target_av = (LLVOAvatar *)target_obj;
 
-            BOOL looking_at_self = source_avatar->isSelf() && target_av->isSelf();
+            bool looking_at_self = source_avatar->isSelf() && target_av->isSelf();
 
             // if selecting self, stare forward
             if (looking_at_self && mTargetOffsetGlobal.magVecSquared() < MIN_TARGET_OFFSET_SQUARED)
diff --git a/indra/newview/llhudeffectlookat.h b/indra/newview/llhudeffectlookat.h
index 9e92212cc8..0e57422ee1 100644
--- a/indra/newview/llhudeffectlookat.h
+++ b/indra/newview/llhudeffectlookat.h
@@ -57,7 +57,7 @@ public:
     /*virtual*/ void markDead();
     /*virtual*/ void setSourceObject(LLViewerObject* objectp);
 
-    BOOL setLookAt(ELookAtType target_type, LLViewerObject *object, LLVector3 position);
+    bool setLookAt(ELookAtType target_type, LLViewerObject *object, LLVector3 position);
     void clearLookAtTarget();
 
     ELookAtType getLookAtType() { return mTargetType; }
@@ -79,7 +79,7 @@ protected:
     void setTargetPosGlobal(const LLVector3d &target_pos_global);
 
 public:
-    static BOOL sDebugLookAt;
+    static bool sDebugLookAt;
 
 private:
     ELookAtType                 mTargetType;
diff --git a/indra/newview/llhudeffectpointat.cpp b/indra/newview/llhudeffectpointat.cpp
index bfa81c7fd1..eeb38cd6aa 100644
--- a/indra/newview/llhudeffectpointat.cpp
+++ b/indra/newview/llhudeffectpointat.cpp
@@ -72,7 +72,7 @@ const S32 POINTAT_PRIORITIES[POINTAT_NUM_TARGETS] =
 
 // statics
 
-BOOL LLHUDEffectPointAt::sDebugPointAt;
+bool LLHUDEffectPointAt::sDebugPointAt;
 
 
 //-----------------------------------------------------------------------------
@@ -219,39 +219,39 @@ void LLHUDEffectPointAt::setTargetPosGlobal(const LLVector3d &target_pos_global)
 // setPointAt()
 // called by agent logic to set look at behavior locally, and propagate to sim
 //-----------------------------------------------------------------------------
-BOOL LLHUDEffectPointAt::setPointAt(EPointAtType target_type, LLViewerObject *object, LLVector3 position)
+bool LLHUDEffectPointAt::setPointAt(EPointAtType target_type, LLViewerObject *object, LLVector3 position)
 {
     if (!mSourceObject)
     {
-        return FALSE;
+        return false;
     }
 
     if (target_type >= POINTAT_NUM_TARGETS)
     {
         LL_WARNS() << "Bad target_type " << (int)target_type << " - ignoring." << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // must be same or higher priority than existing effect
     if (POINTAT_PRIORITIES[target_type] < POINTAT_PRIORITIES[mTargetType])
     {
-        return FALSE;
+        return false;
     }
 
     F32 current_time  = mTimer.getElapsedTimeF32();
 
     // type of pointat behavior or target object has changed
-    BOOL targetTypeChanged = (target_type != mTargetType) ||
+    bool targetTypeChanged = (target_type != mTargetType) ||
         (object != mTargetObject);
 
-    BOOL targetPosChanged = (dist_vec_squared(position, mLastSentOffsetGlobal) > MIN_DELTAPOS_FOR_UPDATE_SQUARED) &&
+    bool targetPosChanged = (dist_vec_squared(position, mLastSentOffsetGlobal) > MIN_DELTAPOS_FOR_UPDATE_SQUARED) &&
         ((current_time - mLastSendTime) > (1.f / MAX_SENDS_PER_SEC));
 
     if (targetTypeChanged || targetPosChanged)
     {
         mLastSentOffsetGlobal = position;
         setDuration(POINTAT_TIMEOUTS[target_type]);
-        setNeedsSendToSim(TRUE);
+        setNeedsSendToSim(true);
 //      LL_INFOS() << "Sending pointat data" << LL_ENDL;
     }
 
@@ -278,7 +278,7 @@ BOOL LLHUDEffectPointAt::setPointAt(EPointAtType target_type, LLViewerObject *ob
         update();
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
diff --git a/indra/newview/llhudeffectpointat.h b/indra/newview/llhudeffectpointat.h
index 501e2992e2..34257d8da9 100644
--- a/indra/newview/llhudeffectpointat.h
+++ b/indra/newview/llhudeffectpointat.h
@@ -50,7 +50,7 @@ public:
     /*virtual*/ void markDead();
     /*virtual*/ void setSourceObject(LLViewerObject* objectp);
 
-    BOOL setPointAt(EPointAtType target_type, LLViewerObject *object, LLVector3 position);
+    bool setPointAt(EPointAtType target_type, LLViewerObject *object, LLVector3 position);
     void clearPointAtTarget();
 
     EPointAtType getPointAtType() { return mTargetType; }
@@ -70,7 +70,7 @@ protected:
     bool calcTargetPosition();
     void update();
 public:
-    static BOOL sDebugPointAt;
+    static bool sDebugPointAt;
 private:
     EPointAtType                mTargetType;
     LLVector3d                  mTargetOffsetGlobal;
diff --git a/indra/newview/llhudeffecttrail.cpp b/indra/newview/llhudeffecttrail.cpp
index ebdb15746b..48abd730c9 100644
--- a/indra/newview/llhudeffecttrail.cpp
+++ b/indra/newview/llhudeffecttrail.cpp
@@ -42,7 +42,7 @@
 #include "llvoavatar.h"
 #include "llworld.h"
 
-LLHUDEffectSpiral::LLHUDEffectSpiral(const U8 type) : LLHUDEffect(type), mbInit(FALSE)
+LLHUDEffectSpiral::LLHUDEffectSpiral(const U8 type) : LLHUDEffect(type), mbInit(false)
 {
     mKillTime = 10.f;
     mVMag = 1.f;
@@ -167,7 +167,7 @@ void LLHUDEffectSpiral::triggerLocal()
 {
     mKillTime = mTimer.getElapsedTimeF32() + mDuration;
 
-    BOOL show_beam = gSavedSettings.getBOOL("ShowSelectionBeam");
+    bool show_beam = gSavedSettings.getBOOL("ShowSelectionBeam");
 
     LLColor4 color;
     color.setVec(mColor);
@@ -247,7 +247,7 @@ void LLHUDEffectSpiral::triggerLocal()
         }
     }
 
-    mbInit = TRUE;
+    mbInit = true;
 }
 
 void LLHUDEffectSpiral::setTargetObject(LLViewerObject *objp)
diff --git a/indra/newview/llhudeffecttrail.h b/indra/newview/llhudeffecttrail.h
index 39418ccef0..042dfd8f20 100644
--- a/indra/newview/llhudeffecttrail.h
+++ b/indra/newview/llhudeffecttrail.h
@@ -76,7 +76,7 @@ private:
     F32                             mOffset[NUM_TRAIL_POINTS];
     */
 
-    BOOL                            mbInit;
+    bool                            mbInit;
     LLPointer<LLViewerPartSource>   mPartSourcep;
 
     F32                             mKillTime;
diff --git a/indra/newview/llhudicon.cpp b/indra/newview/llhudicon.cpp
index dfff6c1dc4..8fa4118a40 100644
--- a/indra/newview/llhudicon.cpp
+++ b/indra/newview/llhudicon.cpp
@@ -65,7 +65,7 @@ LLHUDIcon::LLHUDIcon(const U8 type) :
             LLHUDObject(type),
             mImagep(NULL),
             mScale(0.1f),
-            mHidden(FALSE)
+            mHidden(false)
 {
     sIconInstances.push_back(this);
 }
@@ -186,15 +186,15 @@ void LLHUDIcon::markDead()
     LLHUDObject::markDead();
 }
 
-BOOL LLHUDIcon::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, LLVector4a* intersection)
+bool LLHUDIcon::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, LLVector4a* intersection)
 {
     if (mHidden)
-        return FALSE;
+        return false;
 
     if (mSourceObject.isNull() || mImagep.isNull())
     {
         markDead();
-        return FALSE;
+        return false;
     }
 
     LLVector3 obj_position = mSourceObject->getRenderPosition();
@@ -233,7 +233,7 @@ BOOL LLHUDIcon::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
     if (time_elapsed > MAX_VISIBLE_TIME)
     {
         markDead();
-        return FALSE;
+        return false;
     }
 
     F32 image_aspect = (F32)mImagep->getFullWidth() / (F32)mImagep->getFullHeight() ;
@@ -272,10 +272,10 @@ BOOL LLHUDIcon::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
             dir.mul(t);
             intersection->setAdd(start, dir);
         }
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 //static
@@ -312,7 +312,7 @@ void LLHUDIcon::updateAll()
 }
 
 //static
-BOOL LLHUDIcon::iconsNearby()
+bool LLHUDIcon::iconsNearby()
 {
     return !sIconInstances.empty();
 }
diff --git a/indra/newview/llhudicon.h b/indra/newview/llhudicon.h
index edc843aa8c..b18a4a3b76 100644
--- a/indra/newview/llhudicon.h
+++ b/indra/newview/llhudicon.h
@@ -62,12 +62,12 @@ public:
     static void cleanupDeadIcons();
     static S32 getNumInstances();
 
-    static BOOL iconsNearby();
+    static bool iconsNearby();
 
-    BOOL getHidden() const { return mHidden; }
-    void setHidden( BOOL hide ) { mHidden = hide; }
+    bool getHidden() const { return mHidden; }
+    void setHidden( bool hide ) { mHidden = hide; }
 
-    BOOL lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, LLVector4a* intersection);
+    bool lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, LLVector4a* intersection);
 
 protected:
     LLHUDIcon(const U8 type);
@@ -79,7 +79,7 @@ private:
     LLFrameTimer    mLifeTimer;
     F32             mDistance;
     F32             mScale;
-    BOOL            mHidden;
+    bool            mHidden;
 
     typedef std::vector<LLPointer<LLHUDIcon> > icon_instance_t;
     static icon_instance_t sIconInstances;
diff --git a/indra/newview/llhudmanager.cpp b/indra/newview/llhudmanager.cpp
index 531ca804ef..fd8efe6816 100644
--- a/indra/newview/llhudmanager.cpp
+++ b/indra/newview/llhudmanager.cpp
@@ -96,7 +96,7 @@ void LLHUDManager::sendEffects()
             msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
             msg->nextBlockFast(_PREHASH_Effect);
             hep->packData(msg);
-            hep->setNeedsSendToSim(FALSE);
+            hep->setNeedsSendToSim(false);
             gAgent.sendMessage();
         }
     }
@@ -125,7 +125,7 @@ void LLHUDManager::cleanupEffects()
     }
 }
 
-LLHUDEffect *LLHUDManager::createViewerEffect(const U8 type, BOOL send_to_sim, BOOL originated_here)
+LLHUDEffect *LLHUDManager::createViewerEffect(const U8 type, bool send_to_sim, bool originated_here)
 {
     // SJB: DO NOT USE addHUDObject!!! Not all LLHUDObjects are LLHUDEffects!
     LLHUDEffect *hep = LLHUDObject::addHUDEffect(type);
@@ -191,7 +191,7 @@ void LLHUDManager::processViewerEffect(LLMessageSystem *mesgsys, void **user_dat
         {
             if (!effectp)
             {
-                effectp = LLHUDManager::getInstance()->createViewerEffect(effect_type, FALSE, FALSE);
+                effectp = LLHUDManager::getInstance()->createViewerEffect(effect_type, false, false);
             }
 
             if (effectp)
diff --git a/indra/newview/llhudmanager.h b/indra/newview/llhudmanager.h
index 27e5bafe61..58de31a061 100644
--- a/indra/newview/llhudmanager.h
+++ b/indra/newview/llhudmanager.h
@@ -40,7 +40,7 @@ class LLHUDManager : public LLSingleton<LLHUDManager>
     ~LLHUDManager();
 
 public:
-    LLHUDEffect *createViewerEffect(const U8 type, BOOL send_to_sim = TRUE, BOOL originated_here = TRUE);
+    LLHUDEffect *createViewerEffect(const U8 type, bool send_to_sim = true, bool originated_here = true);
 
     void updateEffects();
     void sendEffects();
diff --git a/indra/newview/llhudnametag.cpp b/indra/newview/llhudnametag.cpp
index f873eff87d..e1bf6c2077 100644
--- a/indra/newview/llhudnametag.cpp
+++ b/indra/newview/llhudnametag.cpp
@@ -65,7 +65,7 @@ const F32 LOD_2_SCREEN_COVERAGE = 0.40f;
 
 std::set<LLPointer<LLHUDNameTag> > LLHUDNameTag::sTextObjects;
 std::vector<LLPointer<LLHUDNameTag> > LLHUDNameTag::sVisibleTextObjects;
-BOOL LLHUDNameTag::sDisplayText = TRUE ;
+bool LLHUDNameTag::sDisplayText = true ;
 const F32 LLHUDNameTag::NAMETAG_MAX_WIDTH = 298.f;
 const F32 LLHUDNameTag::HUD_TEXT_MAX_WIDTH = 190.f;
 
@@ -77,13 +77,13 @@ bool llhudnametag_further_away::operator()(const LLPointer<LLHUDNameTag>& lhs, c
 
 LLHUDNameTag::LLHUDNameTag(const U8 type)
 :   LLHUDObject(type),
-    mDoFade(TRUE),
+    mDoFade(true),
     mFadeDistance(8.f),
     mFadeRange(4.f),
     mLastDistance(0.f),
-    mZCompare(TRUE),
-    mVisibleOffScreen(FALSE),
-    mOffscreen(FALSE),
+    mZCompare(true),
+    mVisibleOffScreen(false),
+    mOffscreen(false),
     mColor(1.f, 1.f, 1.f, 1.f),
 //  mScale(),
     mWidth(0.f),
@@ -102,7 +102,7 @@ LLHUDNameTag::LLHUDNameTag(const U8 type)
     mTextAlignment(ALIGN_TEXT_CENTER),
     mVertAlignment(ALIGN_VERT_CENTER),
     mLOD(0),
-    mHidden(FALSE)
+    mHidden(false)
 {
     LLPointer<LLHUDNameTag> ptr(this);
     sTextObjects.insert(ptr);
@@ -116,17 +116,17 @@ LLHUDNameTag::~LLHUDNameTag()
 }
 
 
-BOOL LLHUDNameTag::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, LLVector4a& intersection, BOOL debug_render)
+bool LLHUDNameTag::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, LLVector4a& intersection, bool debug_render)
 {
     if (!mVisible || mHidden)
     {
-        return FALSE;
+        return false;
     }
 
     // don't pick text that isn't bound to a viewerobject
     if (!mSourceObject || mSourceObject->mDrawable.isNull())
     {
-        return FALSE;
+        return false;
     }
 
     F32 alpha_factor = 1.f;
@@ -141,7 +141,7 @@ BOOL LLHUDNameTag::lineSegmentIntersect(const LLVector4a& start, const LLVector4
     }
     if (text_color.mV[3] < 0.01f)
     {
-        return FALSE;
+        return false;
     }
 
     mOffsetY = lltrunc(mHeight * ((mVertAlignment == ALIGN_VERT_CENTER) ? 0.5f : 1.f));
@@ -176,7 +176,7 @@ BOOL LLHUDNameTag::lineSegmentIntersect(const LLVector4a& start, const LLVector4
     LLVector3 height_vec = mHeight * y_pixel_vec;
 
     LLCoordGL screen_pos;
-    LLViewerCamera::getInstance()->projectPosAgentToScreen(position, screen_pos, FALSE);
+    LLViewerCamera::getInstance()->projectPosAgentToScreen(position, screen_pos, false);
 
     LLVector2 screen_offset;
     screen_offset = updateScreenPos(mPositionOffset);
@@ -216,11 +216,11 @@ BOOL LLHUDNameTag::lineSegmentIntersect(const LLVector4a& start, const LLVector4
         {
             dir.mul(t);
             intersection.setAdd(start, dir);
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLHUDNameTag::render()
@@ -230,11 +230,11 @@ void LLHUDNameTag::render()
     {
         LLGLDepthTest gls_depth(GL_TRUE, GL_FALSE);
         //LLGLDisable gls_stencil(GL_STENCIL_TEST);
-        renderText(FALSE);
+        renderText(false);
     }
 }
 
-void LLHUDNameTag::renderText(BOOL for_select)
+void LLHUDNameTag::renderText(bool for_select)
 {
     if (!mVisible || mHidden)
     {
@@ -257,7 +257,7 @@ void LLHUDNameTag::renderText(BOOL for_select)
         gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);
     }
 
-    LLGLState gls_blend(GL_BLEND, for_select ? FALSE : TRUE);
+    LLGLState gls_blend(GL_BLEND, !for_select);
 
     LLColor4 shadow_color(0.f, 0.f, 0.f, 1.f);
     F32 alpha_factor = 1.f;
@@ -296,7 +296,7 @@ void LLHUDNameTag::renderText(BOOL for_select)
     mRadius = (width_vec + height_vec).magVec() * 0.5f;
 
     LLCoordGL screen_pos;
-    LLViewerCamera::getInstance()->projectPosAgentToScreen(mPositionAgent, screen_pos, FALSE);
+    LLViewerCamera::getInstance()->projectPosAgentToScreen(mPositionAgent, screen_pos, false);
 
     LLVector2 screen_offset = updateScreenPos(mPositionOffset);
 
@@ -342,7 +342,7 @@ void LLHUDNameTag::renderText(BOOL for_select)
 
             LLColor4 label_color(0.f, 0.f, 0.f, 1.f);
             label_color.mV[VALPHA] = alpha_factor;
-            hud_render_text(segment_iter->getText(), render_position, *fontp, segment_iter->mStyle, LLFontGL::NO_SHADOW, x_offset, y_offset, label_color, FALSE);
+            hud_render_text(segment_iter->getText(), render_position, *fontp, segment_iter->mStyle, LLFontGL::NO_SHADOW, x_offset, y_offset, label_color, false);
         }
     }
 
@@ -387,7 +387,7 @@ void LLHUDNameTag::renderText(BOOL for_select)
             text_color = segment_iter->mColor;
             text_color.mV[VALPHA] *= alpha_factor;
 
-            hud_render_text(segment_iter->getText(), render_position, *fontp, style, shadow, x_offset, y_offset, text_color, FALSE);
+            hud_render_text(segment_iter->getText(), render_position, *fontp, style, shadow, x_offset, y_offset, text_color, false);
         }
     }
     /// Reset the default color to white.  The renderer expects this to be the default.
@@ -443,7 +443,7 @@ void LLHUDNameTag::addLine(const std::string &text_utf8,
                 // "QualityAssurance AssuresQuality1" will end up as "QualityAssurance AssuresQua..." because we are enforcing single line
                 do
                 {
-                    S32 segment_length = font->maxDrawableChars(iter->substr(line_length).c_str(), max_pixels, wline.length(), LLFontGL::ANYWHERE);
+                    auto segment_length = font->maxDrawableChars(iter->substr(line_length).c_str(), max_pixels, static_cast<S32>(wline.length()), LLFontGL::ANYWHERE);
                     if (segment_length + line_length < wline.length()) // since we only draw one string, line_length should be 0
                     {
                         // token does does not fit into signle line, need to draw "...".
@@ -451,7 +451,7 @@ void LLHUDNameTag::addLine(const std::string &text_utf8,
                         const LLWString dots_pad(utf8str_to_wstring(std::string("....")));
                         S32 elipses_width = font->getWidthF32(dots_pad.c_str());
                         // truncated string length
-                        segment_length = font->maxDrawableChars(iter->substr(line_length).c_str(), max_pixels - elipses_width, wline.length(), LLFontGL::ANYWHERE);
+                        segment_length = font->maxDrawableChars(iter->substr(line_length).c_str(), max_pixels - elipses_width, static_cast<S32>(wline.length()), LLFontGL::ANYWHERE);
                         const LLWString dots(utf8str_to_wstring(std::string("...")));
                         LLHUDTextSegment segment(iter->substr(line_length, segment_length) + dots, style, color, font);
                         mTextSegments.push_back(segment);
@@ -472,7 +472,7 @@ void LLHUDNameTag::addLine(const std::string &text_utf8,
                 // "QualityAssurance AssuresQuality 1" will be split into two lines "QualityAssurance" and "AssuresQuality"
                 do
                 {
-                    S32 segment_length = font->maxDrawableChars(iter->substr(line_length).c_str(), max_pixels, wline.length(), LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
+                    S32 segment_length = font->maxDrawableChars(iter->substr(line_length).c_str(), max_pixels, static_cast<S32>(wline.length()), LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
                     LLHUDTextSegment segment(iter->substr(line_length, segment_length), style, color, font);
                     mTextSegments.push_back(segment);
                     line_length += segment_length;
@@ -511,7 +511,7 @@ void LLHUDNameTag::addLabel(const std::string& label_utf8, F32 max_pixels)
             do
             {
                 S32 segment_length = mFontp->maxDrawableChars(iter->substr(line_length).c_str(),
-                    max_pixels, wstr.length(), LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
+                    max_pixels, static_cast<S32>(wstr.length()), LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
                 LLHUDTextSegment segment(iter->substr(line_length, segment_length), LLFontGL::NORMAL, mColor, mFontp);
                 mLabelSegments.push_back(segment);
                 line_length += segment_length;
@@ -522,7 +522,7 @@ void LLHUDNameTag::addLabel(const std::string& label_utf8, F32 max_pixels)
     }
 }
 
-void LLHUDNameTag::setZCompare(const BOOL zcompare)
+void LLHUDNameTag::setZCompare(const bool zcompare)
 {
     mZCompare = zcompare;
 }
@@ -554,7 +554,7 @@ void LLHUDNameTag::setAlpha(F32 alpha)
 }
 
 
-void LLHUDNameTag::setDoFade(const BOOL do_fade)
+void LLHUDNameTag::setDoFade(const bool do_fade)
 {
     mDoFade = do_fade;
 }
@@ -571,7 +571,7 @@ void LLHUDNameTag::updateVisibility()
     if (!mSourceObject)
     {
         //LL_WARNS() << "LLHUDNameTag::updateScreenPos -- mSourceObject is NULL!" << LL_ENDL;
-        mVisible = TRUE;
+        mVisible = true;
         sVisibleTextObjects.push_back(LLPointer<LLHUDNameTag> (this));
         return;
     }
@@ -579,7 +579,7 @@ void LLHUDNameTag::updateVisibility()
     // Not visible if parent object is dead
     if (mSourceObject->isDead())
     {
-        mVisible = FALSE;
+        mVisible = false;
         return;
     }
 
@@ -590,7 +590,7 @@ void LLHUDNameTag::updateVisibility()
 
     if (dir_from_camera * LLViewerCamera::getInstance()->getAtAxis() <= 0.f)
     { //text is behind camera, don't render
-        mVisible = FALSE;
+        mVisible = false;
         return;
     }
 
@@ -607,7 +607,7 @@ void LLHUDNameTag::updateVisibility()
 
     if (mLOD >= 3 || !mTextSegments.size() || (mDoFade && (mLastDistance > mFadeDistance + mFadeRange)))
     {
-        mVisible = FALSE;
+        mVisible = false;
         return;
     }
 
@@ -620,21 +620,21 @@ void LLHUDNameTag::updateVisibility()
             (x_pixel_vec * mPositionOffset.mV[VX]) +
             (y_pixel_vec * mPositionOffset.mV[VY]);
 
-    mOffscreen = FALSE;
+    mOffscreen = false;
     if (!LLViewerCamera::getInstance()->sphereInFrustum(render_position, mRadius))
     {
         if (!mVisibleOffScreen)
         {
-            mVisible = FALSE;
+            mVisible = false;
             return;
         }
         else
         {
-            mOffscreen = TRUE;
+            mOffscreen = true;
         }
     }
 
-    mVisible = TRUE;
+    mVisible = true;
     sVisibleTextObjects.push_back(LLPointer<LLHUDNameTag> (this));
 }
 
@@ -646,7 +646,7 @@ LLVector2 LLHUDNameTag::updateScreenPos(LLVector2 &offset)
     LLVector3 y_pixel_vec;
     LLViewerCamera::getInstance()->getPixelVectors(mPositionAgent, y_pixel_vec, x_pixel_vec);
     LLVector3 world_pos = mPositionAgent + (offset.mV[VX] * x_pixel_vec) + (offset.mV[VY] * y_pixel_vec);
-    if (!LLViewerCamera::getInstance()->projectPosAgentToScreen(world_pos, screen_pos, FALSE) && mVisibleOffScreen)
+    if (!LLViewerCamera::getInstance()->projectPosAgentToScreen(world_pos, screen_pos, false) && mVisibleOffScreen)
     {
         // bubble off-screen, so find a spot for it along screen edge
         LLViewerCamera::getInstance()->projectPosAgentToScreenEdge(world_pos, screen_pos);
diff --git a/indra/newview/llhudnametag.h b/indra/newview/llhudnametag.h
index 36d774cccf..9abd8f33cc 100644
--- a/indra/newview/llhudnametag.h
+++ b/indra/newview/llhudnametag.h
@@ -111,9 +111,9 @@ public:
     void setFont(const LLFontGL* font);
     void setColor(const LLColor4 &color);
     void setAlpha(F32 alpha);
-    void setZCompare(const BOOL zcompare);
-    void setDoFade(const BOOL do_fade);
-    void setVisibleOffScreen(BOOL visible) { mVisibleOffScreen = visible; }
+    void setZCompare(const bool zcompare);
+    void setDoFade(const bool do_fade);
+    void setVisibleOffScreen(bool visible) { mVisibleOffScreen = visible; }
 
     // mMaxLines of -1 means unlimited lines.
     void setMaxLines(S32 max_lines) { mMaxLines = max_lines; }
@@ -128,37 +128,37 @@ public:
     friend class LLHUDObject;
     /*virtual*/ F32 getDistance() const { return mLastDistance; }
     S32  getLOD() const { return mLOD; }
-    BOOL getVisible() const { return mVisible; }
-    BOOL getHidden() const { return mHidden; }
-    void setHidden( BOOL hide ) { mHidden = hide; }
+    bool getVisible() const { return mVisible; }
+    bool getHidden() const { return mHidden; }
+    void setHidden( bool hide ) { mHidden = hide; }
     void shift(const LLVector3& offset);
     F32 getWorldHeight() const;
 
-    BOOL lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, LLVector4a& intersection, BOOL debug_render = FALSE);
+    bool lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, LLVector4a& intersection, bool debug_render = false);
 
     static void shiftAll(const LLVector3& offset);
     static void addPickable(std::set<LLViewerObject*> &pick_list);
     static void reshape();
-    static void setDisplayText(BOOL flag) { sDisplayText = flag ; }
+    static void setDisplayText(bool flag) { sDisplayText = flag ; }
 
 protected:
     LLHUDNameTag(const U8 type);
 
     /*virtual*/ void render();
-    void renderText(BOOL for_select);
+    void renderText(bool for_select);
     static void updateAll();
     void setLOD(S32 lod);
     S32 getMaxLines();
 
 private:
     ~LLHUDNameTag();
-    BOOL            mDoFade;
+    bool            mDoFade;
     F32             mFadeRange;
     F32             mFadeDistance;
     F32             mLastDistance;
-    BOOL            mZCompare;
-    BOOL            mVisibleOffScreen;
-    BOOL            mOffscreen;
+    bool            mZCompare;
+    bool            mVisibleOffScreen;
+    bool            mOffscreen;
     LLColor4        mColor;
 //  LLVector3       mScale;
     F32             mWidth;
@@ -180,11 +180,11 @@ private:
     ETextAlignment  mTextAlignment;
     EVertAlignment  mVertAlignment;
     S32             mLOD;
-    BOOL            mHidden;
+    bool            mHidden;
     LLPointer<LLUIImage> mRoundedRectImgp;
     LLPointer<LLUIImage> mRoundedRectTopImgp;
 
-    static BOOL    sDisplayText ;
+    static bool    sDisplayText ;
     static std::set<LLPointer<LLHUDNameTag> > sTextObjects;
     static std::vector<LLPointer<LLHUDNameTag> > sVisibleTextObjects;
 //  static std::vector<LLPointer<LLHUDNameTag> > sVisibleHUDTextObjects;
diff --git a/indra/newview/llhudobject.cpp b/indra/newview/llhudobject.cpp
index e922e8230c..e6fbfbfb38 100644
--- a/indra/newview/llhudobject.cpp
+++ b/indra/newview/llhudobject.cpp
@@ -52,7 +52,7 @@ struct hud_object_further_away
 
 bool hud_object_further_away::operator()(const LLPointer<LLHUDObject>& lhs, const LLPointer<LLHUDObject>& rhs) const
 {
-    return (lhs->getDistance() > rhs->getDistance()) ? true : false;
+    return lhs->getDistance() > rhs->getDistance();
 }
 
 
@@ -61,9 +61,9 @@ LLHUDObject::LLHUDObject(const U8 type) :
     mSourceObject(NULL),
     mTargetObject(NULL)
 {
-    mVisible = TRUE;
+    mVisible = true;
     mType = type;
-    mDead = FALSE;
+    mDead = false;
 }
 
 LLHUDObject::~LLHUDObject()
@@ -72,8 +72,8 @@ LLHUDObject::~LLHUDObject()
 
 void LLHUDObject::markDead()
 {
-    mVisible = FALSE;
-    mDead = TRUE;
+    mVisible = false;
+    mDead = true;
     mSourceObject = NULL;
     mTargetObject = NULL;
 }
diff --git a/indra/newview/llhudobject.h b/indra/newview/llhudobject.h
index 13953d2329..8c628e3f92 100644
--- a/indra/newview/llhudobject.h
+++ b/indra/newview/llhudobject.h
@@ -58,7 +58,7 @@ public:
     void setPositionGlobal(const LLVector3d &position_global);
     void setPositionAgent(const LLVector3 &position_agent);
 
-    BOOL isVisible() const { return mVisible; }
+    bool isVisible() const { return mVisible; }
 
     U8 getType() const { return mType; }
 
@@ -109,8 +109,8 @@ protected:
 
 protected:
     U8              mType;
-    BOOL            mDead;
-    BOOL            mVisible;
+    bool            mDead;
+    bool            mVisible;
     LLVector3d      mPositionGlobal;
     LLPointer<LLViewerObject> mSourceObject;
     LLPointer<LLViewerObject> mTargetObject;
diff --git a/indra/newview/llhudrender.cpp b/indra/newview/llhudrender.cpp
index 563f1dbf96..ead45b7dcc 100644
--- a/indra/newview/llhudrender.cpp
+++ b/indra/newview/llhudrender.cpp
@@ -44,7 +44,7 @@ void hud_render_utf8text(const std::string &str, const LLVector3 &pos_agent,
                      const LLFontGL::ShadowType shadow,
                      const F32 x_offset, const F32 y_offset,
                      const LLColor4& color,
-                     const BOOL orthographic)
+                     const bool orthographic)
 {
     LLWString wstr(utf8str_to_wstring(str));
     hud_render_text(wstr, pos_agent, font, style, shadow, x_offset, y_offset, color, orthographic);
@@ -56,7 +56,7 @@ void hud_render_text(const LLWString &wstr, const LLVector3 &pos_agent,
                     const LLFontGL::ShadowType shadow,
                     const F32 x_offset, const F32 y_offset,
                     const LLColor4& color,
-                    const BOOL orthographic)
+                    const bool orthographic)
 {
     LLViewerCamera* camera = LLViewerCamera::getInstance();
     // Do cheap plane culling
@@ -140,7 +140,7 @@ void hud_render_text(const LLWString &wstr, const LLVector3 &pos_agent,
     LLUI::translate((F32) winX*1.0f/LLFontGL::sScaleX, (F32) winY*1.0f/(LLFontGL::sScaleY), -(((F32) winZ*2.f)-1.f));
     F32 right_x;
 
-    font.render(wstr, 0, 0, 1, color, LLFontGL::LEFT, LLFontGL::BASELINE, style, shadow, wstr.length(), 1000, &right_x, /*use_ellipses*/false, /*use_color*/true);
+    font.render(wstr, 0, 0, 1, color, LLFontGL::LEFT, LLFontGL::BASELINE, style, shadow, static_cast<S32>(wstr.length()), 1000, &right_x, /*use_ellipses*/false, /*use_color*/true);
 
     LLUI::popMatrix();
     gGL.popMatrix();
diff --git a/indra/newview/llhudrender.h b/indra/newview/llhudrender.h
index 5b95ff9b71..eb8f07e4d4 100644
--- a/indra/newview/llhudrender.h
+++ b/indra/newview/llhudrender.h
@@ -41,7 +41,7 @@ void hud_render_text(const LLWString &wstr,
                      const F32 x_offset,
                      const F32 y_offset,
                      const LLColor4& color,
-                     const BOOL orthographic);
+                     const bool orthographic);
 
 // Legacy, slower
 void hud_render_utf8text(const std::string &str,
@@ -52,7 +52,7 @@ void hud_render_utf8text(const std::string &str,
                          const F32 x_offset,
                          const F32 y_offset,
                          const LLColor4& color,
-                         const BOOL orthographic);
+                         const bool orthographic);
 
 
 #endif //LL_LLHUDRENDER_H
diff --git a/indra/newview/llhudtext.cpp b/indra/newview/llhudtext.cpp
index 736c0a5bcd..5ee0ab437d 100644
--- a/indra/newview/llhudtext.cpp
+++ b/indra/newview/llhudtext.cpp
@@ -58,7 +58,7 @@ const F32 MAX_DRAW_DISTANCE = 300.f;
 std::set<LLPointer<LLHUDText> > LLHUDText::sTextObjects;
 std::vector<LLPointer<LLHUDText> > LLHUDText::sVisibleTextObjects;
 std::vector<LLPointer<LLHUDText> > LLHUDText::sVisibleHUDTextObjects;
-BOOL LLHUDText::sDisplayText = TRUE ;
+bool LLHUDText::sDisplayText = true ;
 
 bool lltextobject_further_away::operator()(const LLPointer<LLHUDText>& lhs, const LLPointer<LLHUDText>& rhs) const
 {
@@ -68,8 +68,8 @@ bool lltextobject_further_away::operator()(const LLPointer<LLHUDText>& lhs, cons
 
 LLHUDText::LLHUDText(const U8 type) :
             LLHUDObject(type),
-            mOnHUDAttachment(FALSE),
-//          mVisibleOffScreen(FALSE),
+            mOnHUDAttachment(false),
+//          mVisibleOffScreen(false),
             mWidth(0.f),
             mHeight(0.f),
             mFontp(LLFontGL::getFontSansSerifSmall()),
@@ -80,14 +80,14 @@ LLHUDText::LLHUDText(const U8 type) :
             mTextAlignment(ALIGN_TEXT_CENTER),
             mVertAlignment(ALIGN_VERT_CENTER),
 //          mLOD(0),
-            mHidden(FALSE)
+            mHidden(false)
 {
     mColor = LLColor4(1.f, 1.f, 1.f, 1.f);
-    mDoFade = TRUE;
+    mDoFade = true;
     mFadeDistance = 8.f;
     mFadeRange = 4.f;
-    mZCompare = TRUE;
-    mOffscreen = FALSE;
+    mZCompare = true;
+    mOffscreen = false;
     mRadius = 0.1f;
     LLPointer<LLHUDText> ptr(this);
     sTextObjects.insert(ptr);
@@ -116,7 +116,7 @@ void LLHUDText::renderText()
 
     gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE);
 
-    LLGLState gls_blend(GL_BLEND, TRUE);
+    LLGLState gls_blend(GL_BLEND, true);
 
     LLColor4 shadow_color(0.f, 0.f, 0.f, 1.f);
     F32 alpha_factor = 1.f;
@@ -274,7 +274,7 @@ void LLHUDText::addLine(const std::string &text_utf8,
             do
             {
                 F32 max_pixels = HUD_TEXT_MAX_WIDTH_NO_BUBBLE;
-                S32 segment_length = font->maxDrawableChars(iter->substr(line_length).c_str(), max_pixels, wline.length(), LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
+                S32 segment_length = font->maxDrawableChars(iter->substr(line_length).c_str(), max_pixels, static_cast<S32>(wline.length()), LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
                 LLHUDTextSegment segment(iter->substr(line_length, segment_length), style, color, font);
                 mTextSegments.push_back(segment);
                 line_length += segment_length;
@@ -285,7 +285,7 @@ void LLHUDText::addLine(const std::string &text_utf8,
     }
 }
 
-void LLHUDText::setZCompare(const BOOL zcompare)
+void LLHUDText::setZCompare(const bool zcompare)
 {
     mZCompare = zcompare;
 }
@@ -317,7 +317,7 @@ void LLHUDText::setAlpha(F32 alpha)
 }
 
 
-void LLHUDText::setDoFade(const BOOL do_fade)
+void LLHUDText::setDoFade(const bool do_fade)
 {
     mDoFade = do_fade;
 }
@@ -334,7 +334,7 @@ void LLHUDText::updateVisibility()
     if (!mSourceObject)
     {
         // Beacons
-        mVisible = TRUE;
+        mVisible = true;
         if (mOnHUDAttachment)
         {
             sVisibleHUDTextObjects.push_back(LLPointer<LLHUDText> (this));
@@ -349,14 +349,14 @@ void LLHUDText::updateVisibility()
     // Not visible if parent object is dead
     if (mSourceObject->isDead())
     {
-        mVisible = FALSE;
+        mVisible = false;
         return;
     }
 
     // for now, all text on hud objects is visible
     if (mOnHUDAttachment)
     {
-        mVisible = TRUE;
+        mVisible = true;
         sVisibleHUDTextObjects.push_back(LLPointer<LLHUDText> (this));
         mLastDistance = mPositionAgent.mV[VX];
         return;
@@ -369,7 +369,7 @@ void LLHUDText::updateVisibility()
 
     if (dir_from_camera * LLViewerCamera::getInstance()->getAtAxis() <= 0.f)
     { //text is behind camera, don't render
-        mVisible = FALSE;
+        mVisible = false;
         return;
     }
 
@@ -386,7 +386,7 @@ void LLHUDText::updateVisibility()
 
     if (!mTextSegments.size() || (mDoFade && (mLastDistance > mFadeDistance + mFadeRange)))
     {
-        mVisible = FALSE;
+        mVisible = false;
         return;
     }
 
@@ -407,7 +407,7 @@ void LLHUDText::updateVisibility()
 
     if(last_distance_center > max_draw_distance)
     {
-        mVisible = FALSE;
+        mVisible = false;
         return;
     }
 
@@ -421,21 +421,21 @@ void LLHUDText::updateVisibility()
             (x_pixel_vec * mPositionOffset.mV[VX]) +
             (y_pixel_vec * mPositionOffset.mV[VY]);
 
-    mOffscreen = FALSE;
+    mOffscreen = false;
     if (!LLViewerCamera::getInstance()->sphereInFrustum(render_position, mRadius))
     {
 //      if (!mVisibleOffScreen)
 //      {
-            mVisible = FALSE;
+            mVisible = false;
             return;
 //      }
 //      else
 //      {
-//          mOffscreen = TRUE;
+//          mOffscreen = true;
 //      }
     }
 
-    mVisible = TRUE;
+    mVisible = true;
     sVisibleTextObjects.push_back(LLPointer<LLHUDText> (this));
 }
 
@@ -447,7 +447,7 @@ LLVector2 LLHUDText::updateScreenPos(LLVector2 &offset)
     LLVector3 y_pixel_vec;
     LLViewerCamera::getInstance()->getPixelVectors(mPositionAgent, y_pixel_vec, x_pixel_vec);
 //  LLVector3 world_pos = mPositionAgent + (offset.mV[VX] * x_pixel_vec) + (offset.mV[VY] * y_pixel_vec);
-//  if (!LLViewerCamera::getInstance()->projectPosAgentToScreen(world_pos, screen_pos, FALSE) && mVisibleOffScreen)
+//  if (!LLViewerCamera::getInstance()->projectPosAgentToScreen(world_pos, screen_pos, false) && mVisibleOffScreen)
 //  {
 //      // bubble off-screen, so find a spot for it along screen edge
 //      LLViewerCamera::getInstance()->projectPosAgentToScreenEdge(world_pos, screen_pos);
diff --git a/indra/newview/llhudtext.h b/indra/newview/llhudtext.h
index 1bfd12256e..a81fdebb17 100644
--- a/indra/newview/llhudtext.h
+++ b/indra/newview/llhudtext.h
@@ -97,9 +97,9 @@ public:
     void setFont(const LLFontGL* font);
     void setColor(const LLColor4 &color);
     void setAlpha(F32 alpha);
-    void setZCompare(const BOOL zcompare);
-    void setDoFade(const BOOL do_fade);
-//  void setVisibleOffScreen(BOOL visible) { mVisibleOffScreen = visible; }
+    void setZCompare(const bool zcompare);
+    void setDoFade(const bool do_fade);
+//  void setVisibleOffScreen(bool visible) { mVisibleOffScreen = visible; }
 
     // mMaxLines of -1 means unlimited lines.
     void setMaxLines(S32 max_lines) { mMaxLines = max_lines; }
@@ -113,16 +113,16 @@ public:
     /*virtual*/ void markDead();
     friend class LLHUDObject;
     /*virtual*/ F32 getDistance() const { return mLastDistance; }
-    BOOL getVisible() { return mVisible; }
-    BOOL getHidden() const { return mHidden; }
-    void setHidden( BOOL hide ) { mHidden = hide; }
-    void setOnHUDAttachment(BOOL on_hud) { mOnHUDAttachment = on_hud; }
+    bool getVisible() { return mVisible; }
+    bool getHidden() const { return mHidden; }
+    void setHidden( bool hide ) { mHidden = hide; }
+    void setOnHUDAttachment(bool on_hud) { mOnHUDAttachment = on_hud; }
     void shift(const LLVector3& offset);
 
     static void shiftAll(const LLVector3& offset);
     static void renderAllHUD();
     static void reshape();
-    static void setDisplayText(BOOL flag) { sDisplayText = flag ; }
+    static void setDisplayText(bool flag) { sDisplayText = flag ; }
 
 protected:
     LLHUDText(const U8 type);
@@ -134,14 +134,14 @@ protected:
 
 private:
     ~LLHUDText();
-    BOOL            mOnHUDAttachment;
-    BOOL            mDoFade;
+    bool            mOnHUDAttachment;
+    bool            mDoFade;
     F32             mFadeRange;
     F32             mFadeDistance;
     F32             mLastDistance;
-    BOOL            mZCompare;
-//  BOOL            mVisibleOffScreen;
-    BOOL            mOffscreen;
+    bool            mZCompare;
+//  bool            mVisibleOffScreen;
+    bool            mOffscreen;
     LLColor4        mColor;
     LLVector3       mScale;
     F32             mWidth;
@@ -160,9 +160,9 @@ private:
     std::vector<LLHUDTextSegment> mTextSegments;
     ETextAlignment  mTextAlignment;
     EVertAlignment  mVertAlignment;
-    BOOL            mHidden;
+    bool            mHidden;
 
-    static BOOL    sDisplayText ;
+    static bool    sDisplayText ;
     static std::set<LLPointer<LLHUDText> > sTextObjects;
     static std::vector<LLPointer<LLHUDText> > sVisibleTextObjects;
     static std::vector<LLPointer<LLHUDText> > sVisibleHUDTextObjects;
diff --git a/indra/newview/llhudview.cpp b/indra/newview/llhudview.cpp
index be4c5f9d33..23fdf4b0fd 100644
--- a/indra/newview/llhudview.cpp
+++ b/indra/newview/llhudview.cpp
@@ -62,11 +62,11 @@ void LLHUDView::draw()
 }
 
 /*virtual*/
-BOOL LLHUDView::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLHUDView::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (LLTracker::handleMouseDown(x, y))
     {
-        return TRUE;
+        return true;
     }
     return LLView::handleMouseDown(x, y, mask);
 }
diff --git a/indra/newview/llhudview.h b/indra/newview/llhudview.h
index dd99996818..1a98d635d0 100644
--- a/indra/newview/llhudview.h
+++ b/indra/newview/llhudview.h
@@ -42,7 +42,7 @@ public:
     virtual void draw();
 
 protected:
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
 };
 
 extern LLHUDView *gHUDView;
diff --git a/indra/newview/llimpanel.cpp b/indra/newview/llimpanel.cpp
deleted file mode 100644
index 3de18ba92f..0000000000
--- a/indra/newview/llimpanel.cpp
+++ /dev/null
@@ -1,978 +0,0 @@
-/**
- * @file llimpanel.cpp
- * @brief LLIMPanel class definition
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "llviewerprecompiledheaders.h"
-
-#include "llimpanel.h"
-
-#include "indra_constants.h"
-#include "llfloaterreg.h"
-#include "llfocusmgr.h"
-#include "llfontgl.h"
-#include "llrect.h"
-#include "llerror.h"
-#include "llmultifloater.h"
-#include "llstring.h"
-#include "message.h"
-#include "lltextbox.h"
-
-#include "llagent.h"
-#include "llbutton.h"
-#include "llcallingcard.h"
-#include "llchannelmanager.h"
-#include "llchat.h"
-#include "llchiclet.h"
-#include "llconsole.h"
-#include "llgroupactions.h"
-#include "llfloater.h"
-#include "llfloateractivespeakers.h"
-#include "llavataractions.h"
-#include "llinventory.h"
-#include "llinventorymodel.h"
-#include "llfloaterinventory.h"
-#include "lliconctrl.h"
-#include "llkeyboard.h"
-#include "lllineeditor.h"
-#include "llpanelimcontrolpanel.h"
-#include "llrecentpeople.h"
-#include "llresmgr.h"
-#include "lltooldraganddrop.h"
-#include "lltrans.h"
-#include "lltabcontainer.h"
-#include "llviewertexteditor.h"
-#include "llviewermessage.h"
-#include "llviewerstats.h"
-#include "llviewercontrol.h"
-#include "lluictrlfactory.h"
-#include "llviewerwindow.h"
-#include "llvoicechannel.h"
-#include "lllogchat.h"
-#include "llweb.h"
-#include "llhttpclient.h"
-#include "llmutelist.h"
-#include "llstylemap.h"
-#include "llappviewer.h"
-
-//
-// Constants
-//
-const S32 LINE_HEIGHT = 16;
-const S32 MIN_WIDTH = 200;
-const S32 MIN_HEIGHT = 130;
-
-//
-// Statics
-//
-//
-static std::string sTitleString = "Instant Message with [NAME]";
-static std::string sTypingStartString = "[NAME]: ...";
-static std::string sSessionStartString = "Starting session with [NAME] please wait.";
-
-
-//
-// LLFloaterIMPanel
-//
-
-LLFloaterIMPanel::LLFloaterIMPanel(const std::string& session_label,
-                                   const LLUUID& session_id,
-                                   const LLUUID& other_participant_id,
-                                   const std::vector<LLUUID>& ids,
-                                   EInstantMessage dialog)
-:   LLFloater(session_id),
-    mInputEditor(NULL),
-    mHistoryEditor(NULL),
-    mSessionUUID(session_id),
-    mSessionLabel(session_label),
-    mSessionInitialized(FALSE),
-    mSessionStartMsgPos(0),
-    mOtherParticipantUUID(other_participant_id),
-    mDialog(dialog),
-    mSessionInitialTargetIDs(ids),
-    mTyping(FALSE),
-    mOtherTyping(FALSE),
-    mTypingLineStartIndex(0),
-    mSentTypingState(TRUE),
-    mNumUnreadMessages(0),
-    mShowSpeakersOnConnect(TRUE),
-    mTextIMPossible(TRUE),
-    mProfileButtonEnabled(TRUE),
-    mCallBackEnabled(TRUE),
-    mSpeakerPanel(NULL),
-    mFirstKeystrokeTimer(),
-    mLastKeystrokeTimer()
-{
-    std::string xml_filename;
-    switch(mDialog)
-    {
-    case IM_SESSION_GROUP_START:
-        mFactoryMap["active_speakers_panel"] = LLCallbackMap(createSpeakersPanel, this);
-        xml_filename = "floater_instant_message_group.xml";
-        break;
-    case IM_SESSION_INVITE:
-        mFactoryMap["active_speakers_panel"] = LLCallbackMap(createSpeakersPanel, this);
-        if (gAgent.isInGroup(mSessionUUID))
-        {
-            xml_filename = "floater_instant_message_group.xml";
-        }
-        else // must be invite to ad hoc IM
-        {
-            xml_filename = "floater_instant_message_ad_hoc.xml";
-        }
-        break;
-    case IM_SESSION_P2P_INVITE:
-        xml_filename = "floater_instant_message.xml";
-        break;
-    case IM_SESSION_CONFERENCE_START:
-        mFactoryMap["active_speakers_panel"] = LLCallbackMap(createSpeakersPanel, this);
-        xml_filename = "floater_instant_message_ad_hoc.xml";
-        break;
-    // just received text from another user
-    case IM_NOTHING_SPECIAL:
-
-        xml_filename = "floater_instant_message.xml";
-
-        mTextIMPossible = LLVoiceClient::getInstance()->isSessionTextIMPossible(mSessionUUID);
-        mProfileButtonEnabled = LLVoiceClient::getInstance()->isParticipantAvatar(mSessionUUID);
-        mCallBackEnabled = LLVoiceClient::getInstance()->isSessionCallBackPossible(mSessionUUID);
-        break;
-    default:
-        LL_WARNS() << "Unknown session type" << LL_ENDL;
-        xml_filename = "floater_instant_message.xml";
-        break;
-    }
-
-    LLUICtrlFactory::getInstance()->buildFloater(this, xml_filename, NULL);
-
-    setTitle(mSessionLabel);
-    mInputEditor->setMaxTextLength(DB_IM_MSG_STR_LEN);
-    // enable line history support for instant message bar
-    mInputEditor->setEnableLineHistory(TRUE);
-
-    //*TODO we probably need the same "awaiting message" thing in LLFloaterIMSession
-    LLIMModel::LLIMSession* im_session = LLIMModel::getInstance()->findIMSession(mSessionUUID);
-    if (!im_session)
-    {
-        llerror("im session with id " + mSessionUUID.asString() + " does not exist!", 0);
-        return;
-    }
-
-    mSessionInitialized =  im_session->mSessionInitialized;
-    if (!mSessionInitialized)
-    {
-        //locally echo a little "starting session" message
-        LLUIString session_start = sSessionStartString;
-
-        session_start.setArg("[NAME]", getTitle());
-        mSessionStartMsgPos =
-            mHistoryEditor->getWText().length();
-
-        addHistoryLine(
-            session_start,
-            LLUIColorTable::instance().getColor("SystemChatColor"),
-            false);
-    }
-}
-
-
-LLFloaterIMPanel::~LLFloaterIMPanel()
-{
-    //delete focus lost callback
-    mFocusCallbackConnection.disconnect();
-}
-
-BOOL LLFloaterIMPanel::postBuild()
-{
-    setVisibleCallback(boost::bind(&LLFloaterIMPanel::onVisibilityChange, this, _2));
-
-    mInputEditor = getChild<LLLineEditor>("chat_editor");
-    mInputEditor->setFocusReceivedCallback( boost::bind(onInputEditorFocusReceived, _1, this) );
-    mFocusCallbackConnection = mInputEditor->setFocusLostCallback( boost::bind(onInputEditorFocusLost, _1, this));
-    mInputEditor->setKeystrokeCallback( onInputEditorKeystroke, this );
-    mInputEditor->setCommitCallback( onCommitChat, this );
-    mInputEditor->setCommitOnFocusLost( FALSE );
-    mInputEditor->setRevertOnEsc( FALSE );
-    mInputEditor->setReplaceNewlinesWithSpaces( FALSE );
-
-    childSetAction("profile_callee_btn", onClickProfile, this);
-    childSetAction("group_info_btn", onClickGroupInfo, this);
-
-    childSetAction("start_call_btn", onClickStartCall, this);
-    childSetAction("end_call_btn", onClickEndCall, this);
-    childSetAction("send_btn", onClickSend, this);
-    childSetAction("toggle_active_speakers_btn", onClickToggleActiveSpeakers, this);
-
-    childSetAction("moderator_kick_speaker", onKickSpeaker, this);
-    //LLButton* close_btn = getChild<LLButton>("close_btn");
-    //close_btn->setClickedCallback(&LLFloaterIMPanel::onClickClose, this);
-
-    mHistoryEditor = getChild<LLViewerTextEditor>("im_history");
-
-    if ( IM_SESSION_GROUP_START == mDialog )
-    {
-        childSetEnabled("profile_btn", FALSE);
-    }
-
-    if(!mProfileButtonEnabled)
-    {
-        childSetEnabled("profile_callee_btn", FALSE);
-    }
-
-    sTitleString = getString("title_string");
-    sTypingStartString = getString("typing_start_string");
-    sSessionStartString = getString("session_start_string");
-
-    if (mSpeakerPanel)
-    {
-        mSpeakerPanel->refreshSpeakers();
-    }
-
-    if (mDialog == IM_NOTHING_SPECIAL)
-    {
-        childSetAction("mute_btn", onClickMuteVoice, this);
-        childSetCommitCallback("speaker_volume", onVolumeChange, this);
-    }
-
-    setDefaultBtn("send_btn");
-    return TRUE;
-}
-
-void* LLFloaterIMPanel::createSpeakersPanel(void* data)
-{
-    LLFloaterIMPanel* floaterp = (LLFloaterIMPanel*)data;
-    LLIMSpeakerMgr* speaker_mgr = LLIMModel::getInstance()->getSpeakerManager(floaterp->mSessionUUID);
-    floaterp->mSpeakerPanel = new LLPanelActiveSpeakers(speaker_mgr, TRUE);
-    return floaterp->mSpeakerPanel;
-}
-
-//static
-void LLFloaterIMPanel::onClickMuteVoice(void* user_data)
-{
-    LLFloaterIMPanel* floaterp = (LLFloaterIMPanel*)user_data;
-    if (floaterp)
-    {
-        BOOL is_muted = LLMuteList::getInstance()->isMuted(floaterp->mOtherParticipantUUID, LLMute::flagVoiceChat);
-
-        LLMute mute(floaterp->mOtherParticipantUUID, floaterp->getTitle(), LLMute::AGENT);
-        if (!is_muted)
-        {
-            LLMuteList::getInstance()->add(mute, LLMute::flagVoiceChat);
-        }
-        else
-        {
-            LLMuteList::getInstance()->remove(mute, LLMute::flagVoiceChat);
-        }
-    }
-}
-
-//static
-void LLFloaterIMPanel::onVolumeChange(LLUICtrl* source, void* user_data)
-{
-    LLFloaterIMPanel* floaterp = (LLFloaterIMPanel*)user_data;
-    if (floaterp)
-    {
-        LLVoiceClient::getInstance()->setUserVolume(floaterp->mOtherParticipantUUID, (F32)source->getValue().asReal());
-    }
-}
-
-
-// virtual
-void LLFloaterIMPanel::draw()
-{
-    LLViewerRegion* region = gAgent.getRegion();
-
-    BOOL enable_connect = (region && region->getCapability("ChatSessionRequest") != "")
-                      && mSessionInitialized
-                      && LLVoiceClient::getInstance()->voiceEnabled()
-                      && mCallBackEnabled;
-
-    // hide/show start call and end call buttons
-    LLVoiceChannel* voice_channel = LLIMModel::getInstance()->getVoiceChannel(mSessionUUID);
-    if (!voice_channel)
-        return;
-
-    childSetVisible("end_call_btn", LLVoiceClient::getInstance()->voiceEnabled() && voice_channel->getState() >= LLVoiceChannel::STATE_CALL_STARTED);
-    childSetVisible("start_call_btn", LLVoiceClient::getInstance()->voiceEnabled() && voice_channel->getState() < LLVoiceChannel::STATE_CALL_STARTED);
-    childSetEnabled("start_call_btn", enable_connect);
-    childSetEnabled("send_btn", !childGetValue("chat_editor").asString().empty());
-
-    LLPointer<LLSpeaker> self_speaker;
-    LLIMSpeakerMgr* speaker_mgr = LLIMModel::getInstance()->getSpeakerManager(mSessionUUID);
-    if (speaker_mgr)
-    {
-        self_speaker = speaker_mgr->findSpeaker(gAgent.getID());
-    }
-    if(!mTextIMPossible)
-    {
-        mInputEditor->setEnabled(FALSE);
-        mInputEditor->setLabel(getString("unavailable_text_label"));
-    }
-    else if (self_speaker.notNull() && self_speaker->mModeratorMutedText)
-    {
-        mInputEditor->setEnabled(FALSE);
-        mInputEditor->setLabel(getString("muted_text_label"));
-    }
-    else
-    {
-        mInputEditor->setEnabled(TRUE);
-        mInputEditor->setLabel(getString("default_text_label"));
-    }
-
-    // show speakers window when voice first connects
-    if (mShowSpeakersOnConnect && voice_channel->isActive())
-    {
-        childSetVisible("active_speakers_panel", TRUE);
-        mShowSpeakersOnConnect = FALSE;
-    }
-    childSetValue("toggle_active_speakers_btn", childIsVisible("active_speakers_panel"));
-
-    if (mTyping)
-    {
-        // Time out if user hasn't typed for a while.
-        if (mLastKeystrokeTimer.getElapsedTimeF32() > LLAgent::TYPING_TIMEOUT_SECS)
-        {
-            setTyping(FALSE);
-        }
-
-        // If we are typing, and it's been a little while, send the
-        // typing indicator
-        if (!mSentTypingState
-            && mFirstKeystrokeTimer.getElapsedTimeF32() > 1.f)
-        {
-            sendTypingState(TRUE);
-            mSentTypingState = TRUE;
-        }
-    }
-
-    // use embedded panel if available
-    if (mSpeakerPanel)
-    {
-        if (mSpeakerPanel->getVisible())
-        {
-            mSpeakerPanel->refreshSpeakers();
-        }
-    }
-    else
-    {
-        // refresh volume and mute checkbox
-        childSetVisible("speaker_volume", LLVoiceClient::getInstance()->voiceEnabled() && voice_channel->isActive());
-        childSetValue("speaker_volume", LLVoiceClient::getInstance()->getUserVolume(mOtherParticipantUUID));
-
-        childSetValue("mute_btn", LLMuteList::getInstance()->isMuted(mOtherParticipantUUID, LLMute::flagVoiceChat));
-        childSetVisible("mute_btn", LLVoiceClient::getInstance()->voiceEnabled() && voice_channel->isActive());
-    }
-    LLFloater::draw();
-}
-
-class LLSessionInviteResponder : public LLHTTPClient::Responder
-{
-    LOG_CLASS(LLSessionInviteResponder);
-public:
-    LLSessionInviteResponder(const LLUUID& session_id)
-    {
-        mSessionID = session_id;
-    }
-
-protected:
-    void httpFailure()
-    {
-        LL_WARNS() << "Error inviting all agents to session " << dumpResponse() << LL_ENDL;
-        //throw something back to the viewer here?
-    }
-
-private:
-    LLUUID mSessionID;
-};
-
-BOOL LLFloaterIMPanel::inviteToSession(const std::vector<LLUUID>& ids)
-{
-    LLViewerRegion* region = gAgent.getRegion();
-    if (!region)
-    {
-        return FALSE;
-    }
-
-    S32 count = ids.size();
-
-    if( isInviteAllowed() && (count > 0) )
-    {
-        LL_INFOS() << "LLFloaterIMPanel::inviteToSession() - inviting participants" << LL_ENDL;
-
-        std::string url = region->getCapability("ChatSessionRequest");
-
-        LLSD data;
-
-        data["params"] = LLSD::emptyArray();
-        for (int i = 0; i < count; i++)
-        {
-            data["params"].append(ids[i]);
-        }
-
-        data["method"] = "invite";
-        data["session-id"] = mSessionUUID;
-        LLHTTPClient::post(
-            url,
-            data,
-            new LLSessionInviteResponder(
-                mSessionUUID));
-    }
-    else
-    {
-        LL_INFOS() << "LLFloaterIMPanel::inviteToSession -"
-                << " no need to invite agents for "
-                << mDialog << LL_ENDL;
-        // successful add, because everyone that needed to get added
-        // was added.
-    }
-
-    return TRUE;
-}
-
-void LLFloaterIMPanel::addHistoryLine(const std::string &utf8msg, const LLColor4& color, bool log_to_file, const LLUUID& source, const std::string& name)
-{
-    // start tab flashing when receiving im for background session from user
-    if (source != LLUUID::null)
-    {
-        LLMultiFloater* hostp = getHost();
-        if( !isInVisibleChain()
-            && hostp
-            && source != gAgent.getID())
-        {
-            hostp->setFloaterFlashing(this, TRUE);
-        }
-    }
-
-    // Now we're adding the actual line of text, so erase the
-    // "Foo is typing..." text segment, and the optional timestamp
-    // if it was present. JC
-    removeTypingIndicator(NULL);
-
-    // Actually add the line
-    std::string timestring;
-    bool prepend_newline = true;
-    if (gSavedSettings.getBOOL("IMShowTimestamps"))
-    {
-        timestring = mHistoryEditor->appendTime(prepend_newline);
-        prepend_newline = false;
-    }
-
-    std::string separator_string(": ");
-
-    // 'name' is a sender name that we want to hotlink so that clicking on it opens a profile.
-    if (!name.empty()) // If name exists, then add it to the front of the message.
-    {
-        // Don't hotlink any messages from the system (e.g. "Second Life:"), so just add those in plain text.
-        if (name == SYSTEM_FROM)
-        {
-            mHistoryEditor->appendText(name + separator_string, prepend_newline, LLStyle::Params().color(color));
-        }
-        else
-        {
-            // Convert the name to a hotlink and add to message.
-            mHistoryEditor->appendText(name + separator_string, prepend_newline, LLStyleMap::instance().lookupAgent(source));
-        }
-        prepend_newline = false;
-    }
-    mHistoryEditor->appendText(utf8msg, prepend_newline, LLStyle::Params().color(color));
-    mHistoryEditor->blockUndo();
-
-    if (!isInVisibleChain())
-    {
-        mNumUnreadMessages++;
-    }
-}
-
-
-void LLFloaterIMPanel::setInputFocus( BOOL b )
-{
-    mInputEditor->setFocus( b );
-}
-
-
-void LLFloaterIMPanel::selectAll()
-{
-    mInputEditor->selectAll();
-}
-
-
-void LLFloaterIMPanel::selectNone()
-{
-    mInputEditor->deselect();
-}
-
-BOOL LLFloaterIMPanel::handleKeyHere( KEY key, MASK mask )
-{
-    BOOL handled = FALSE;
-    if( KEY_RETURN == key && mask == MASK_NONE)
-    {
-        sendMsg();
-        handled = TRUE;
-    }
-    else if ( KEY_ESCAPE == key )
-    {
-        handled = TRUE;
-        gFocusMgr.setKeyboardFocus(NULL);
-    }
-
-    // May need to call base class LLPanel::handleKeyHere if not handled
-    // in order to tab between buttons.  JNC 1.2.2002
-    return handled;
-}
-
-BOOL LLFloaterIMPanel::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
-                                  EDragAndDropType cargo_type,
-                                  void* cargo_data,
-                                  EAcceptance* accept,
-                                  std::string& tooltip_msg)
-{
-
-    if (mDialog == IM_NOTHING_SPECIAL)
-    {
-        LLToolDragAndDrop::handleGiveDragAndDrop(mOtherParticipantUUID, mSessionUUID, drop,
-                                                 cargo_type, cargo_data, accept);
-    }
-
-    // handle case for dropping calling cards (and folders of calling cards) onto invitation panel for invites
-    else if (isInviteAllowed())
-    {
-        *accept = ACCEPT_NO;
-
-        if (cargo_type == DAD_CALLINGCARD)
-        {
-            if (dropCallingCard((LLInventoryItem*)cargo_data, drop))
-            {
-                *accept = ACCEPT_YES_MULTI;
-            }
-        }
-        else if (cargo_type == DAD_CATEGORY)
-        {
-            if (dropCategory((LLInventoryCategory*)cargo_data, drop))
-            {
-                *accept = ACCEPT_YES_MULTI;
-            }
-        }
-    }
-    return TRUE;
-}
-
-BOOL LLFloaterIMPanel::dropCallingCard(LLInventoryItem* item, BOOL drop)
-{
-    BOOL rv = isInviteAllowed();
-    if(rv && item && item->getCreatorUUID().notNull())
-    {
-        if(drop)
-        {
-            std::vector<LLUUID> ids;
-            ids.push_back(item->getCreatorUUID());
-            inviteToSession(ids);
-        }
-    }
-    else
-    {
-        // set to false if creator uuid is null.
-        rv = FALSE;
-    }
-    return rv;
-}
-
-BOOL LLFloaterIMPanel::dropCategory(LLInventoryCategory* category, BOOL drop)
-{
-    BOOL rv = isInviteAllowed();
-    if(rv && category)
-    {
-        LLInventoryModel::cat_array_t cats;
-        LLInventoryModel::item_array_t items;
-        LLUniqueBuddyCollector buddies;
-        gInventory.collectDescendentsIf(category->getUUID(),
-                                        cats,
-                                        items,
-                                        LLInventoryModel::EXCLUDE_TRASH,
-                                        buddies);
-        S32 count = items.count();
-        if(count == 0)
-        {
-            rv = FALSE;
-        }
-        else if(drop)
-        {
-            std::vector<LLUUID> ids;
-            ids.reserve(count);
-            for(S32 i = 0; i < count; ++i)
-            {
-                ids.push_back(items.get(i)->getCreatorUUID());
-            }
-            inviteToSession(ids);
-        }
-    }
-    return rv;
-}
-
-BOOL LLFloaterIMPanel::isInviteAllowed() const
-{
-
-    return ( (IM_SESSION_CONFERENCE_START == mDialog)
-             || (IM_SESSION_INVITE == mDialog) );
-}
-
-
-// static
-void LLFloaterIMPanel::onTabClick(void* userdata)
-{
-    LLFloaterIMPanel* self = (LLFloaterIMPanel*) userdata;
-    self->setInputFocus(TRUE);
-}
-
-
-// static
-void LLFloaterIMPanel::onClickProfile( void* userdata )
-{
-    //  Bring up the Profile window
-    LLFloaterIMPanel* self = (LLFloaterIMPanel*) userdata;
-
-    if (self->getOtherParticipantID().notNull())
-    {
-        LLAvatarActions::showProfile(self->getOtherParticipantID());
-    }
-}
-
-// static
-void LLFloaterIMPanel::onClickGroupInfo( void* userdata )
-{
-    //  Bring up the Profile window
-    LLFloaterIMPanel* self = (LLFloaterIMPanel*) userdata;
-
-    LLGroupActions::show(self->mSessionUUID);
-
-}
-
-// static
-void LLFloaterIMPanel::onClickClose( void* userdata )
-{
-    LLFloaterIMPanel* self = (LLFloaterIMPanel*) userdata;
-    if(self)
-    {
-        self->closeFloater();
-    }
-}
-
-// static
-void LLFloaterIMPanel::onClickStartCall(void* userdata)
-{
-    LLFloaterIMPanel* self = (LLFloaterIMPanel*) userdata;
-
-    gIMMgr->startCall(self->mSessionUUID);
-}
-
-// static
-void LLFloaterIMPanel::onClickEndCall(void* userdata)
-{
-    LLFloaterIMPanel* self = (LLFloaterIMPanel*) userdata;
-
-    gIMMgr->endCall(self->mSessionUUID);
-}
-
-// static
-void LLFloaterIMPanel::onClickSend(void* userdata)
-{
-    LLFloaterIMPanel* self = (LLFloaterIMPanel*)userdata;
-    self->sendMsg();
-}
-
-// static
-void LLFloaterIMPanel::onClickToggleActiveSpeakers(void* userdata)
-{
-    LLFloaterIMPanel* self = (LLFloaterIMPanel*)userdata;
-
-    self->childSetVisible("active_speakers_panel", !self->childIsVisible("active_speakers_panel"));
-}
-
-// static
-void LLFloaterIMPanel::onCommitChat(LLUICtrl* caller, void* userdata)
-{
-    LLFloaterIMPanel* self= (LLFloaterIMPanel*) userdata;
-    self->sendMsg();
-}
-
-// static
-void LLFloaterIMPanel::onInputEditorFocusReceived( LLFocusableElement* caller, void* userdata )
-{
-    LLFloaterIMPanel* self= (LLFloaterIMPanel*) userdata;
-    self->mHistoryEditor->setCursorAndScrollToEnd();
-}
-
-// static
-void LLFloaterIMPanel::onInputEditorFocusLost(LLFocusableElement* caller, void* userdata)
-{
-    LLFloaterIMPanel* self = (LLFloaterIMPanel*) userdata;
-    self->setTyping(FALSE);
-}
-
-// static
-void LLFloaterIMPanel::onInputEditorKeystroke(LLLineEditor* caller, void* userdata)
-{
-    LLFloaterIMPanel* self = (LLFloaterIMPanel*)userdata;
-    std::string text = self->mInputEditor->getText();
-    if (!text.empty())
-    {
-        self->setTyping(TRUE);
-    }
-    else
-    {
-        // Deleting all text counts as stopping typing.
-        self->setTyping(FALSE);
-    }
-}
-
-// virtual
-void LLFloaterIMPanel::onClose(bool app_quitting)
-{
-    setTyping(FALSE);
-
-    gIMMgr->leaveSession(mSessionUUID);
-
-    // *HACK hide the voice floater
-    LLFloaterReg::hideInstance("voice_call", mSessionUUID);
-}
-
-void LLFloaterIMPanel::onVisibilityChange(const LLSD& new_visibility)
-{
-    if (new_visibility.asBoolean())
-    {
-        mNumUnreadMessages = 0;
-    }
-
-    LLVoiceChannel* voice_channel = LLIMModel::getInstance()->getVoiceChannel(mSessionUUID);
-    if (voice_channel && voice_channel->getState() == LLVoiceChannel::STATE_CONNECTED)
-    {
-        if (new_visibility.asBoolean())
-            LLFloaterReg::showInstance("voice_call", mSessionUUID);
-        else
-            LLFloaterReg::hideInstance("voice_call", mSessionUUID);
-    }
-}
-
-void LLFloaterIMPanel::sendMsg()
-{
-    if (!gAgent.isGodlike()
-        && (mDialog == IM_NOTHING_SPECIAL)
-        && mOtherParticipantUUID.isNull())
-    {
-        LL_INFOS() << "Cannot send IM to everyone unless you're a god." << LL_ENDL;
-        return;
-    }
-
-    if (mInputEditor)
-    {
-        LLWString text = mInputEditor->getConvertedText();
-        if(!text.empty())
-        {
-            // store sent line in history, duplicates will get filtered
-            if (mInputEditor) mInputEditor->updateHistory();
-            // Truncate and convert to UTF8 for transport
-            std::string utf8_text = wstring_to_utf8str(text);
-            utf8_text = utf8str_truncate(utf8_text, MAX_MSG_BUF_SIZE - 1);
-
-            if ( mSessionInitialized )
-            {
-                LLIMModel::sendMessage(utf8_text,
-                                mSessionUUID,
-                                mOtherParticipantUUID,
-                                mDialog);
-
-            }
-            else
-            {
-                //queue up the message to send once the session is
-                //initialized
-                mQueuedMsgsForInit.append(utf8_text);
-            }
-        }
-
-        LLViewerStats::getInstance()->incStat(LLViewerStats::ST_IM_COUNT);
-
-        mInputEditor->setText(LLStringUtil::null);
-    }
-
-    // Don't need to actually send the typing stop message, the other
-    // client will infer it from receiving the message.
-    mTyping = FALSE;
-    mSentTypingState = TRUE;
-}
-
-void LLFloaterIMPanel::processSessionUpdate(const LLSD& session_update)
-{
-    if (
-        session_update.has("moderated_mode") &&
-        session_update["moderated_mode"].has("voice") )
-    {
-        BOOL voice_moderated = session_update["moderated_mode"]["voice"];
-
-        if (voice_moderated)
-        {
-            setTitle(mSessionLabel + std::string(" ") + getString("moderated_chat_label"));
-        }
-        else
-        {
-            setTitle(mSessionLabel);
-        }
-
-
-        //update the speakers dropdown too, if it's available
-        if (mSpeakerPanel)
-        {
-            mSpeakerPanel->setVoiceModerationCtrlMode(voice_moderated);
-        }
-    }
-}
-
-void LLFloaterIMPanel::sessionInitReplyReceived(const LLUUID& session_id)
-{
-    mSessionUUID = session_id;
-    mSessionInitialized = TRUE;
-
-    //we assume the history editor hasn't moved at all since
-    //we added the starting session message
-    //so, we count how many characters to remove
-    S32 chars_to_remove = mHistoryEditor->getWText().length() -
-        mSessionStartMsgPos;
-    mHistoryEditor->removeTextFromEnd(chars_to_remove);
-
-    //and now, send the queued msg
-    LLSD::array_iterator iter;
-    for ( iter = mQueuedMsgsForInit.beginArray();
-          iter != mQueuedMsgsForInit.endArray();
-          ++iter)
-    {
-        LLIMModel::sendMessage(
-            iter->asString(),
-            mSessionUUID,
-            mOtherParticipantUUID,
-            mDialog);
-    }
-}
-
-void LLFloaterIMPanel::setTyping(BOOL typing)
-{
-    LLIMSpeakerMgr* speaker_mgr = LLIMModel::getInstance()->getSpeakerManager(mSessionUUID);
-    if (typing)
-    {
-        // Every time you type something, reset this timer
-        mLastKeystrokeTimer.reset();
-
-        if (!mTyping)
-        {
-            // You just started typing.
-            mFirstKeystrokeTimer.reset();
-
-            // Will send typing state after a short delay.
-            mSentTypingState = FALSE;
-        }
-
-        if (speaker_mgr)
-            speaker_mgr->setSpeakerTyping(gAgent.getID(), TRUE);
-    }
-    else
-    {
-        if (mTyping)
-        {
-            // you just stopped typing, send state immediately
-            sendTypingState(FALSE);
-            mSentTypingState = TRUE;
-        }
-        if (speaker_mgr)
-            speaker_mgr->setSpeakerTyping(gAgent.getID(), FALSE);
-    }
-
-    mTyping = typing;
-}
-
-void LLFloaterIMPanel::sendTypingState(BOOL typing)
-{
-    // Don't want to send typing indicators to multiple people, potentially too
-    // much network traffic.  Only send in person-to-person IMs.
-    if (mDialog != IM_NOTHING_SPECIAL) return;
-
-    LLIMModel::instance().sendTypingState(mSessionUUID, mOtherParticipantUUID, typing);
-}
-
-
-void LLFloaterIMPanel::processIMTyping(const LLIMInfo* im_info, BOOL typing)
-{
-    if (typing)
-    {
-        // other user started typing
-        addTypingIndicator(im_info->mName);
-    }
-    else
-    {
-        // other user stopped typing
-        removeTypingIndicator(im_info);
-    }
-}
-
-
-void LLFloaterIMPanel::addTypingIndicator(const std::string &name)
-{
-    // we may have lost a "stop-typing" packet, don't add it twice
-    if (!mOtherTyping)
-    {
-        mTypingLineStartIndex = mHistoryEditor->getWText().length();
-        LLUIString typing_start = sTypingStartString;
-        typing_start.setArg("[NAME]", name);
-        addHistoryLine(typing_start, LLUIColorTable::instance().getColor("SystemChatColor"), false);
-        mOtherTypingName = name;
-        mOtherTyping = TRUE;
-    }
-    // MBW -- XXX -- merge from release broke this (argument to this function changed from an LLIMInfo to a name)
-    // Richard will fix.
-//  mSpeakers->setSpeakerTyping(im_info->mFromID, TRUE);
-}
-
-
-void LLFloaterIMPanel::removeTypingIndicator(const LLIMInfo* im_info)
-{
-    if (mOtherTyping)
-    {
-        // Must do this first, otherwise addHistoryLine calls us again.
-        mOtherTyping = FALSE;
-
-        S32 chars_to_remove = mHistoryEditor->getWText().length() - mTypingLineStartIndex;
-        mHistoryEditor->removeTextFromEnd(chars_to_remove);
-        if (im_info)
-        {
-            LLIMSpeakerMgr* speaker_mgr = LLIMModel::getInstance()->getSpeakerManager(mSessionUUID);
-            if (speaker_mgr)
-            {
-                speaker_mgr->setSpeakerTyping(im_info->mFromID, FALSE);
-            }
-        }
-    }
-}
-
-//static
-void LLFloaterIMPanel::onKickSpeaker(void* user_data)
-{
-
-}
diff --git a/indra/newview/llimpanel.h b/indra/newview/llimpanel.h
deleted file mode 100644
index 01cd0c5861..0000000000
--- a/indra/newview/llimpanel.h
+++ /dev/null
@@ -1,212 +0,0 @@
-/**
- * @file llimpanel.h
- * @brief LLIMPanel class definition
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_IMPANEL_H
-#define LL_IMPANEL_H
-
-#include "lldockablefloater.h"
-#include "lllogchat.h"
-#include "lluuid.h"
-#include "lldarray.h"
-#include "llinstantmessage.h"
-#include "llvoiceclient.h"
-#include "llstyle.h"
-
-class LLLineEditor;
-class LLViewerTextEditor;
-class LLInventoryItem;
-class LLInventoryCategory;
-class LLIMSpeakerMgr;
-class LLPanelActiveSpeakers;
-class LLPanelChatControlPanel;
-
-class LLFloaterIMPanel : public LLFloater
-{
-public:
-
-    // The session id is the id of the session this is for. The target
-    // refers to the user (or group) that where this session serves as
-    // the default. For example, if you open a session though a
-    // calling card, a new session id will be generated, but the
-    // target_id will be the agent referenced by the calling card.
-    LLFloaterIMPanel(const std::string& session_label,
-                     const LLUUID& session_id,
-                     const LLUUID& target_id,
-                     const std::vector<LLUUID>& ids,
-                     EInstantMessage dialog);
-    virtual ~LLFloaterIMPanel();
-
-    /*virtual*/ BOOL postBuild();
-
-    // Check typing timeout timer.
-    /*virtual*/ void draw();
-
-    /*virtual*/ void onClose(bool app_quitting);
-    void onVisibilityChange(const LLSD& new_visibility);
-
-    // add target ids to the session.
-    // Return TRUE if successful, otherwise FALSE.
-    BOOL inviteToSession(const std::vector<LLUUID>& agent_ids);
-
-    void addHistoryLine(const std::string &utf8msg,
-                        const LLColor4& color = LLColor4::white,
-                        bool log_to_file = true,
-                        const LLUUID& source = LLUUID::null,
-                        const std::string& name = LLStringUtil::null);
-
-    void setInputFocus( BOOL b );
-
-    void selectAll();
-    void selectNone();
-
-    S32 getNumUnreadMessages() { return mNumUnreadMessages; }
-
-    BOOL handleKeyHere(KEY key, MASK mask);
-    BOOL handleDragAndDrop(S32 x, S32 y, MASK mask,
-                           BOOL drop, EDragAndDropType cargo_type,
-                           void *cargo_data, EAcceptance *accept,
-                           std::string& tooltip_msg);
-
-    static void     onInputEditorFocusReceived( LLFocusableElement* caller, void* userdata );
-    static void     onInputEditorFocusLost(LLFocusableElement* caller, void* userdata);
-    static void     onInputEditorKeystroke(LLLineEditor* caller, void* userdata);
-    static void     onCommitChat(LLUICtrl* caller, void* userdata);
-    static void     onTabClick( void* userdata );
-
-    static void     onClickProfile( void* userdata );
-    static void     onClickGroupInfo( void* userdata );
-    static void     onClickClose( void* userdata );
-    static void     onClickStartCall( void* userdata );
-    static void     onClickEndCall( void* userdata );
-    static void     onClickSend( void* userdata );
-    static void     onClickToggleActiveSpeakers( void* userdata );
-    static void*    createSpeakersPanel(void* data);
-    static void     onKickSpeaker(void* user_data);
-
-    //callbacks for P2P muting and volume control
-    static void onClickMuteVoice(void* user_data);
-    static void onVolumeChange(LLUICtrl* source, void* user_data);
-
-    const LLUUID& getSessionID() const { return mSessionUUID; }
-    const LLUUID& getOtherParticipantID() const { return mOtherParticipantUUID; }
-    void processSessionUpdate(const LLSD& update);
-    EInstantMessage getDialogType() const { return mDialog; }
-    void setDialogType(EInstantMessage dialog) { mDialog = dialog; }
-
-    void sessionInitReplyReceived(const LLUUID& im_session_id);
-
-    // Handle other participant in the session typing.
-    void processIMTyping(const LLIMInfo* im_info, BOOL typing);
-
-private:
-    // Called by UI methods.
-    void sendMsg();
-
-    // for adding agents via the UI. Return TRUE if possible, do it if
-    BOOL dropCallingCard(LLInventoryItem* item, BOOL drop);
-    BOOL dropCategory(LLInventoryCategory* category, BOOL drop);
-
-    // test if local agent can add agents.
-    BOOL isInviteAllowed() const;
-
-    // Called whenever the user starts or stops typing.
-    // Sends the typing state to the other user if necessary.
-    void setTyping(BOOL typing);
-
-    // Add the "User is typing..." indicator.
-    void addTypingIndicator(const std::string &name);
-
-    // Remove the "User is typing..." indicator.
-    void removeTypingIndicator(const LLIMInfo* im_info);
-
-    void sendTypingState(BOOL typing);
-
-private:
-    LLLineEditor* mInputEditor;
-    LLViewerTextEditor* mHistoryEditor;
-
-    // The value of the mSessionUUID depends on how the IM session was started:
-    //   one-on-one  ==> random id
-    //   group ==> group_id
-    //   inventory folder ==> folder item_id
-    //   911 ==> Gaurdian_Angel_Group_ID ^ gAgent.getID()
-    LLUUID mSessionUUID;
-
-    std::string mSessionLabel;
-
-    BOOL mSessionInitialized;
-    LLSD mQueuedMsgsForInit;
-
-    // The value mOtherParticipantUUID depends on how the IM session was started:
-    //   one-on-one = recipient's id
-    //   group ==> group_id
-    //   inventory folder ==> first target id in list
-    //   911 ==> sender
-    LLUUID mOtherParticipantUUID;
-    std::vector<LLUUID> mSessionInitialTargetIDs;
-
-    EInstantMessage mDialog;
-
-    // Are you currently typing?
-    BOOL mTyping;
-
-    // Is other user currently typing?
-    BOOL mOtherTyping;
-
-    // name of other user who is currently typing
-    std::string mOtherTypingName;
-
-    // Where does the "User is typing..." line start?
-    S32 mTypingLineStartIndex;
-    // Where does the "Starting session..." line start?
-    S32 mSessionStartMsgPos;
-
-    S32 mNumUnreadMessages;
-
-    BOOL mSentTypingState;
-
-    BOOL mShowSpeakersOnConnect;
-
-    BOOL mTextIMPossible;
-    BOOL mProfileButtonEnabled;
-    BOOL mCallBackEnabled;
-
-    LLPanelActiveSpeakers* mSpeakerPanel;
-
-    // Optimization:  Don't send "User is typing..." until the
-    // user has actually been typing for a little while.  Prevents
-    // extra IMs for brief "lol" type utterences.
-    LLFrameTimer mFirstKeystrokeTimer;
-
-    // Timer to detect when user has stopped typing.
-    LLFrameTimer mLastKeystrokeTimer;
-
-    boost::signals2::connection mFocusCallbackConnection;
-
-    void disableWhileSessionStarting();
-};
-
-#endif  // LL_IMPANEL_H
diff --git a/indra/newview/llimprocessing.cpp b/indra/newview/llimprocessing.cpp
index ff803ae312..e2e83ef42b 100644
--- a/indra/newview/llimprocessing.cpp
+++ b/indra/newview/llimprocessing.cpp
@@ -118,7 +118,7 @@ static std::string clean_name_from_im(const std::string& name, EInstantMessage t
 }
 
 static std::string clean_name_from_task_im(const std::string& msg,
-    BOOL from_group)
+    bool from_group)
 {
     boost::smatch match;
     static const boost::regex returned_exp(
@@ -203,7 +203,7 @@ void inventory_offer_handler(LLOfferInfo* info)
 
     // Strip any SLURL from the message display. (DEV-2754)
     std::string msg = info->mDesc;
-    int indx = msg.find(" ( http://slurl.com/secondlife/");
+    auto indx = msg.find(" ( http://slurl.com/secondlife/");
     if (indx == std::string::npos)
     {
         // try to find new slurl host
@@ -249,7 +249,7 @@ void inventory_offer_handler(LLOfferInfo* info)
     // faked for toast one.
     payload["object_id"] = object_id;
     // Flag indicating that this notification is faked for toast.
-    payload["give_inventory_notification"] = FALSE;
+    payload["give_inventory_notification"] = false;
     args["OBJECTFROMNAME"] = info->mFromName;
     args["NAME"] = info->mFromName;
     if (info->mFromGroup)
@@ -278,7 +278,7 @@ void inventory_offer_handler(LLOfferInfo* info)
         p.name = info->mFromID == gAgentID ? "OwnObjectGiveItem" : "ObjectGiveItem";
 
         // Pop up inv offer chiclet and let the user accept (keep), or reject (and silently delete) the inventory.
-        LLPostponedNotification::add<LLPostponedOfferNotification>(p, info->mFromID, info->mFromGroup == TRUE);
+        LLPostponedNotification::add<LLPostponedOfferNotification>(p, info->mFromID, info->mFromGroup);
     }
     else // Agent -> Agent Inventory Offer
     {
@@ -315,7 +315,7 @@ void inventory_offer_handler(LLOfferInfo* info)
         if (!bAutoAccept) // if we auto accept, do not pester the user
         {
             // Inform user that there is a script floater via toast system
-            payload["give_inventory_notification"] = TRUE;
+            payload["give_inventory_notification"] = true;
             p.payload = payload;
             LLPostponedNotification::add<LLPostponedOfferNotification>(p, info->mFromID, false);
         }
@@ -412,7 +412,7 @@ static void notification_display_name_callback(const LLUUID& id,
 }
 
 void LLIMProcessing::processNewMessage(LLUUID from_id,
-    BOOL from_group,
+    bool from_group,
     LLUUID to_id,
     U8 offline,
     EInstantMessage dialog, // U8
@@ -445,14 +445,14 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
     // IDEVO convert new-style "Resident" names for display
     name = clean_name_from_im(name, dialog);
 
-    BOOL is_do_not_disturb = gAgent.isDoNotDisturb();
-    BOOL is_muted = LLMuteList::getInstance()->isMuted(from_id, name, LLMute::flagTextChat)
+    bool is_do_not_disturb = gAgent.isDoNotDisturb();
+    bool is_muted = LLMuteList::getInstance()->isMuted(from_id, name, LLMute::flagTextChat)
         // object IMs contain sender object id in session_id (STORM-1209)
         || (dialog == IM_FROM_TASK && LLMuteList::getInstance()->isMuted(session_id));
-    BOOL is_owned_by_me = FALSE;
-    BOOL is_friend = (LLAvatarTracker::instance().getBuddyInfo(from_id) == NULL) ? false : true;
-    BOOL accept_im_from_only_friend = gSavedPerAccountSettings.getBOOL("VoiceCallsFriendsOnly");
-    BOOL is_linden = chat.mSourceType != CHAT_SOURCE_OBJECT &&
+    bool is_owned_by_me = false;
+    bool is_friend = LLAvatarTracker::instance().getBuddyInfo(from_id) != NULL;
+    bool accept_im_from_only_friend = gSavedPerAccountSettings.getBOOL("VoiceCallsFriendsOnly");
+    bool is_linden = chat.mSourceType != CHAT_SOURCE_OBJECT &&
         LLMuteList::isLinden(name);
 
     chat.mMuted = is_muted;
@@ -640,8 +640,8 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
             {
                 // aux_id contains group id, binary bucket contains name and asset type
                 group_id = aux_id;
-                has_inventory = binary_bucket_size > 1 ? TRUE : FALSE;
-                from_group = TRUE; // inaccurate value correction
+                has_inventory = binary_bucket_size > 1;
+                from_group = true; // inaccurate value correction
                 if (has_inventory)
                 {
                     std::string str_bucket = ll_safe_string((char*)binary_bucket, binary_bucket_size);
@@ -701,7 +701,7 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
             }
             else
             {
-                S32 index = original_name.find(" Resident");
+                auto index = original_name.find(" Resident");
                 if (index != std::string::npos)
                 {
                     original_name = original_name.substr(0, index);
@@ -865,7 +865,7 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
                 bucketp = (struct offer_agent_bucket_t*) &binary_bucket[0];
                 info->mType = (LLAssetType::EType) bucketp->asset_type;
                 info->mObjectID = bucketp->object_id;
-                info->mFromObject = FALSE;
+                info->mFromObject = false;
             }
             else // IM_TASK_INVENTORY_OFFERED
             {
@@ -894,7 +894,7 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
                     LL_WARNS("Messaging") << "Malformed inventory offer from object, type might be " << info->mType << LL_ENDL;
                 }
                 info->mObjectID = LLUUID::null;
-                info->mFromObject = TRUE;
+                info->mFromObject = true;
             }
 
             info->mIM = dialog;
@@ -1252,7 +1252,7 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
                 LLSD payload;
                 payload["from_id"] = from_id;
                 payload["lure_id"] = session_id;
-                payload["godlike"] = FALSE;
+                payload["godlike"] = false;
                 payload["region_maturity"] = region_access;
 
                 if (!canUserAccessDstRegion)
@@ -1357,7 +1357,7 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
             LLSD payload;
             payload["from_id"] = from_id;
             payload["lure_id"] = session_id;
-            payload["godlike"] = TRUE;
+            payload["godlike"] = true;
             payload["region_maturity"] = region_access;
 
             if (!canUserAccessDstRegion)
@@ -1494,7 +1494,7 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
 
 void LLIMProcessing::requestOfflineMessages()
 {
-    static BOOL requested = FALSE;
+    static bool requested = false;
     if (!requested
         && gMessageSystem
         && !gDisconnected
@@ -1521,7 +1521,7 @@ void LLIMProcessing::requestOfflineMessages()
             LLCoros::instance().launch("LLIMProcessing::requestOfflineMessagesCoro",
                 boost::bind(&LLIMProcessing::requestOfflineMessagesCoro, cap_url));
         }
-        requested = TRUE;
+        requested = true;
     }
 }
 
@@ -1621,7 +1621,7 @@ void LLIMProcessing::requestOfflineMessagesCoro(std::string url)
         }
 
         // Todo: once drtsim-451 releases, remove the string option
-        BOOL from_group;
+        bool from_group;
         if (message_data["from_group"].isInteger())
         {
             from_group = message_data["from_group"].asInteger();
@@ -1637,23 +1637,29 @@ void LLIMProcessing::requestOfflineMessagesCoro(std::string url)
         {
             session_id = message_data["asset_id"].asUUID();
         }
-        LLIMProcessing::processNewMessage(
-            message_data["from_agent_id"].asUUID(),
-            from_group,
-            message_data["to_agent_id"].asUUID(),
-            message_data.has("offline") ? static_cast<U8>(message_data["offline"].asInteger()) : IM_OFFLINE,
-            dialog,
-            session_id,
-            static_cast<U32>(message_data["timestamp"].asInteger()),
-            message_data["from_agent_name"].asString(),
-            message_data["message"].asString(),
-            static_cast<U32>((message_data.has("parent_estate_id")) ? message_data["parent_estate_id"].asInteger() : 1), // 1 - IMMainland
-            message_data["region_id"].asUUID(),
-            position,
-            bin_bucket.data(),
-            bin_bucket.size(),
-            sender,
-            message_data["asset_id"].asUUID());
+
+        LLAppViewer::instance()->postToMainCoro([=]()
+            {
+                std::vector<U8> local_bin_bucket = bin_bucket;
+                LLHost local_sender = sender;
+                LLIMProcessing::processNewMessage(
+                    message_data["from_agent_id"].asUUID(),
+                    from_group,
+                    message_data["to_agent_id"].asUUID(),
+                    message_data.has("offline") ? static_cast<U8>(message_data["offline"].asInteger()) : IM_OFFLINE,
+                    dialog,
+                    session_id,
+                    static_cast<U32>(message_data["timestamp"].asInteger()),
+                    message_data["from_agent_name"].asString(),
+                    message_data["message"].asString(),
+                    static_cast<U32>((message_data.has("parent_estate_id")) ? message_data["parent_estate_id"].asInteger() : 1), // 1 - IMMainland
+                    message_data["region_id"].asUUID(),
+                    position,
+                    local_bin_bucket.data(),
+                    S32(local_bin_bucket.size()),
+                    local_sender,
+                    message_data["asset_id"].asUUID());
+            });
 
     }
 }
diff --git a/indra/newview/llimprocessing.h b/indra/newview/llimprocessing.h
index 4d20b963a4..030d28b198 100644
--- a/indra/newview/llimprocessing.h
+++ b/indra/newview/llimprocessing.h
@@ -34,7 +34,7 @@ class LLIMProcessing
 public:
     // Pre-process message for IM manager
     static void processNewMessage(LLUUID from_id,
-        BOOL from_group,
+        bool from_group,
         LLUUID to_id,
         U8 offline,
         EInstantMessage dialog, // U8
diff --git a/indra/newview/llimview.cpp b/indra/newview/llimview.cpp
index a29b883f6b..d402f8b74f 100644
--- a/indra/newview/llimview.cpp
+++ b/indra/newview/llimview.cpp
@@ -117,16 +117,16 @@ const LLUUID LLOutgoingCallDialog::OCD_KEY = LLUUID("7CF78E11-0CFE-498D-ADB9-141
 LLIMMgr* gIMMgr = NULL;
 
 
-BOOL LLSessionTimeoutTimer::tick()
+bool LLSessionTimeoutTimer::tick()
 {
-    if (mSessionId.isNull()) return TRUE;
+    if (mSessionId.isNull()) return true;
 
     LLIMModel::LLIMSession* session = LLIMModel::getInstance()->findIMSession(mSessionId);
     if (session && !session->mSessionInitialized)
     {
         gIMMgr->showSessionStartError("session_initialization_timed_out_error", mSessionId);
     }
-    return TRUE;
+    return true;
 }
 
 
@@ -224,26 +224,26 @@ void notify_of_message(const LLSD& msg, bool is_dnd_msg)
         if (msg["source_type"].asInteger() == CHAT_SOURCE_OBJECT)
         {
             user_preferences = gSavedSettings.getString("NotificationObjectIMOptions");
-            if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundObjectIM") == TRUE))
+            if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundObjectIM")))
             {
                 make_ui_sound("UISndNewIncomingIMSession");
             }
         }
         else
         {
-        user_preferences = gSavedSettings.getString("NotificationNearbyChatOptions");
-            if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundNearbyChatIM") == TRUE))
+            user_preferences = gSavedSettings.getString("NotificationNearbyChatOptions");
+            if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundNearbyChatIM")))
             {
                 make_ui_sound("UISndNewIncomingIMSession");
-    }
+            }
         }
     }
-    else if(session->isP2PSessionType())
+    else if (session->isP2PSessionType())
     {
         if (LLAvatarTracker::instance().isBuddy(participant_id))
         {
             user_preferences = gSavedSettings.getString("NotificationFriendIMOptions");
-            if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundFriendIM") == TRUE))
+            if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundFriendIM")))
             {
                 make_ui_sound("UISndNewIncomingIMSession");
             }
@@ -251,24 +251,24 @@ void notify_of_message(const LLSD& msg, bool is_dnd_msg)
         else
         {
             user_preferences = gSavedSettings.getString("NotificationNonFriendIMOptions");
-            if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundNonFriendIM") == TRUE))
+            if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundNonFriendIM")))
             {
                 make_ui_sound("UISndNewIncomingIMSession");
+            }
         }
     }
-    }
-    else if(session->isAdHocSessionType())
+    else if (session->isAdHocSessionType())
     {
         user_preferences = gSavedSettings.getString("NotificationConferenceIMOptions");
-        if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundConferenceIM") == TRUE))
+        if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundConferenceIM")))
         {
             make_ui_sound("UISndNewIncomingIMSession");
-    }
+        }
     }
     else if(session->isGroupSessionType())
     {
         user_preferences = gSavedSettings.getString("NotificationGroupChatOptions");
-        if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundGroupChatIM") == TRUE))
+        if (!gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundGroupChatIM")))
         {
             make_ui_sound("UISndNewIncomingIMSession");
         }
@@ -318,8 +318,7 @@ void notify_of_message(const LLSD& msg, bool is_dnd_msg)
         else
         {
             store_dnd_message = true;
-            }
-
+        }
     }
 
     // 2. Flash line item
@@ -773,7 +772,7 @@ LLIMModel::LLIMSession::LLIMSession(const LLUUID& session_id,
     }
     else
     {
-        //tick returns TRUE - timer will be deleted after the tick
+        //tick returns true - timer will be deleted after the tick
         new LLSessionTimeoutTimer(mSessionID, SESSION_INITIALIZATION_TIMEOUT);
     }
 
@@ -868,7 +867,7 @@ void LLIMModel::LLIMSession::onAdHocNameCache(const LLAvatarName& av_name)
 
     if (!av_name.isValidName())
     {
-        S32 separator_index = mName.rfind(" ");
+        auto separator_index = mName.rfind(" ");
         std::string name = mName.substr(0, separator_index);
         ++separator_index;
         std::string conference_word = mName.substr(separator_index, mName.length());
@@ -1044,7 +1043,7 @@ void LLIMModel::LLIMSession::addMessage(const std::string& from,
     if (mSpeakers && from_id.notNull())
     {
         mSpeakers->speakerChatted(from_id);
-        mSpeakers->setSpeakerTyping(from_id, FALSE);
+        mSpeakers->setSpeakerTyping(from_id, false);
     }
 }
 
@@ -1302,7 +1301,7 @@ void LLIMModel::LLIMSession::addMessagesFromServerHistory(const LLSD& history,
         }
     }
 
-    S32 shifted_size = shift_msgs.size();
+    auto shifted_size = shift_msgs.size();
     while (shift_msgs.size() > 0)
     {   // Finally add back any new messages, and tweak the index value to be correct.
         LLSD newer_message = shift_msgs.front();
@@ -1364,7 +1363,7 @@ LLIMModel::LLIMSession* LLIMModel::findIMSession(const LLUUID& session_id) const
 //*TODO consider switching to using std::set instead of std::list for holding LLUUIDs across the whole code
 LLIMModel::LLIMSession* LLIMModel::findAdHocIMSession(const uuid_vec_t& ids)
 {
-    S32 num = ids.size();
+    auto num = ids.size();
     if (!num) return NULL;
 
     if (mId2SessionMap.empty()) return NULL;
@@ -1407,7 +1406,7 @@ bool LLIMModel::LLIMSession::isOutgoingAdHoc() const
 
 bool LLIMModel::LLIMSession::isAdHoc()
 {
-    return IM_SESSION_CONFERENCE_START == mType || (IM_SESSION_INVITE == mType && !gAgent.isInGroup(mSessionID, TRUE));
+    return IM_SESSION_CONFERENCE_START == mType || (IM_SESSION_INVITE == mType && !gAgent.isInGroup(mSessionID, true));
 }
 
 bool LLIMModel::LLIMSession::isP2P()
@@ -1417,7 +1416,7 @@ bool LLIMModel::LLIMSession::isP2P()
 
 bool LLIMModel::LLIMSession::isGroupChat()
 {
-    return IM_SESSION_GROUP_START == mType || (IM_SESSION_INVITE == mType && gAgent.isInGroup(mSessionID, TRUE));
+    return IM_SESSION_GROUP_START == mType || (IM_SESSION_INVITE == mType && gAgent.isInGroup(mSessionID, true));
 }
 
 LLUUID LLIMModel::LLIMSession::generateOutgoingAdHocHash() const
@@ -1618,7 +1617,7 @@ void LLIMModel::getMessagesSilently(const LLUUID& session_id, chat_message_list_
         return;
     }
 
-    int i = session->mMsgs.size() - start_index;
+    int i = static_cast<int>(session->mMsgs.size()) - start_index;
 
     for (chat_message_list_t::iterator iter = session->mMsgs.begin();
         iter != session->mMsgs.end() && i > 0;
@@ -1874,7 +1873,7 @@ const std::string& LLIMModel::getHistoryFileName(const LLUUID& session_id) const
 
 
 // TODO get rid of other participant ID
-void LLIMModel::sendTypingState(LLUUID session_id, LLUUID other_participant_id, BOOL typing)
+void LLIMModel::sendTypingState(LLUUID session_id, LLUUID other_participant_id, bool typing)
 {
     std::string name;
     LLAgentUI::buildFullname(name);
@@ -1882,7 +1881,7 @@ void LLIMModel::sendTypingState(LLUUID session_id, LLUUID other_participant_id,
     pack_instant_message(
         gMessageSystem,
         gAgent.getID(),
-        FALSE,
+        false,
         gAgent.getSessionID(),
         other_participant_id,
         name,
@@ -1902,7 +1901,7 @@ void LLIMModel::sendLeaveSession(const LLUUID& session_id, const LLUUID& other_p
         pack_instant_message(
             gMessageSystem,
             gAgent.getID(),
-            FALSE,
+            false,
             gAgent.getSessionID(),
             other_participant_id,
             name,
@@ -1950,7 +1949,7 @@ void LLIMModel::sendMessage(const std::string& utf8_text,
         pack_instant_message(
             gMessageSystem,
             gAgent.getID(),
-            FALSE,
+            false,
             gAgent.getSessionID(),
             other_participant_id,
             name.c_str(),
@@ -2009,7 +2008,7 @@ void LLIMModel::sendMessage(const std::string& utf8_text,
         if (speaker_mgr)
         {
             speaker_mgr->speakerChatted(gAgentID);
-            speaker_mgr->setSpeakerTyping(gAgentID, FALSE);
+            speaker_mgr->setSpeakerTyping(gAgentID, false);
         }
     }
 
@@ -2074,7 +2073,7 @@ void session_starter_helper(
     msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
 
     msg->nextBlockFast(_PREHASH_MessageBlock);
-    msg->addBOOLFast(_PREHASH_FromGroup, FALSE);
+    msg->addBOOLFast(_PREHASH_FromGroup, false);
     msg->addUUIDFast(_PREHASH_ToAgentID, other_participant_id);
     msg->addU8Fast(_PREHASH_Offline, IM_ONLINE);
     msg->addU8Fast(_PREHASH_Dialog, im_type);
@@ -2099,12 +2098,12 @@ void start_deprecated_conference_chat(
 {
     U8* bucket;
     U8* pos;
-    S32 count;
+    size_t count;
     S32 bucket_size;
 
     // *FIX: this could suffer from endian issues
     count = agents_to_invite.size();
-    bucket_size = UUID_BYTES * count;
+    bucket_size = UUID_BYTES * static_cast<S32>(count);
     bucket = new U8[bucket_size];
     pos = bucket;
 
@@ -2238,7 +2237,7 @@ LLUUID LLIMMgr::computeSessionID(
         }
     }
 
-    if (gAgent.isInGroup(session_id, TRUE) && (session_id != other_participant_id))
+    if (gAgent.isInGroup(session_id, true) && (session_id != other_participant_id))
     {
         LL_WARNS() << "Group session id different from group id: IM type = " << dialog << ", session id = " << session_id << ", group id = " << other_participant_id << LL_ENDL;
     }
@@ -2321,7 +2320,7 @@ LLIMMgr::onConfirmForceCloseError(
     LLFloater* floater = LLFloaterIMSession::findInstance(session_id);
     if ( floater )
     {
-        floater->closeFloater(FALSE);
+        floater->closeFloater(false);
     }
     return false;
 }
@@ -2476,7 +2475,7 @@ LLCallDialog::LLCallDialog(const LLSD& payload)
       mPayload(payload),
       mLifetime(DEFAULT_LIFETIME)
 {
-    setAutoFocus(FALSE);
+    setAutoFocus(false);
     // force docked state since this floater doesn't save it between recreations
     setDocked(true);
 }
@@ -2486,14 +2485,14 @@ LLCallDialog::~LLCallDialog()
     LLUI::getInstance()->removePopup(this);
 }
 
-BOOL LLCallDialog::postBuild()
+bool LLCallDialog::postBuild()
 {
     if (!LLDockableFloater::postBuild() || !gToolBarView)
-        return FALSE;
+        return false;
 
     dockToToolbarButton("speak");
 
-    return TRUE;
+    return true;
 }
 
 void LLCallDialog::dockToToolbarButton(const std::string& toolbarButtonName)
@@ -2567,7 +2566,7 @@ void LLCallDialog::setIcon(const LLSD& session_id, const LLSD& participant_id)
 {
     bool participant_is_avatar = LLVoiceClient::getInstance()->isParticipantAvatar(session_id);
 
-    bool is_group = participant_is_avatar && gAgent.isInGroup(session_id, TRUE);
+    bool is_group = participant_is_avatar && gAgent.isInGroup(session_id, true);
 
     LLAvatarIconCtrl* avatar_icon = getChild<LLAvatarIconCtrl>("avatar_icon");
     LLGroupIconCtrl* group_icon = getChild<LLGroupIconCtrl>("group_icon");
@@ -2756,13 +2755,13 @@ void LLOutgoingCallDialog::onCancel(void* user_data)
 }
 
 
-BOOL LLOutgoingCallDialog::postBuild()
+bool LLOutgoingCallDialog::postBuild()
 {
-    BOOL success = LLCallDialog::postBuild();
+    bool success = LLCallDialog::postBuild();
 
     childSetAction("Cancel", onCancel, this);
 
-    setCanDrag(FALSE);
+    setCanDrag(false);
 
     return success;
 }
@@ -2810,14 +2809,14 @@ void LLIncomingCallDialog::onLifetimeExpired()
     }
 }
 
-BOOL LLIncomingCallDialog::postBuild()
+bool LLIncomingCallDialog::postBuild()
 {
     LLCallDialog::postBuild();
 
     if (!mPayload.isMap() || mPayload.size() == 0)
     {
         LL_INFOS("IMVIEW") << "IncomingCall: invalid argument" << LL_ENDL;
-        return TRUE;
+        return true;
     }
 
     LLUUID session_id = mPayload["session_id"].asUUID();
@@ -2827,14 +2826,14 @@ BOOL LLIncomingCallDialog::postBuild()
     if (session_id.isNull() && caller_id.asUUID().isNull())
     {
         LL_INFOS("IMVIEW") << "IncomingCall: invalid ids" << LL_ENDL;
-        return TRUE;
+        return true;
     }
 
     std::string notify_box_type = mPayload["notify_box_type"].asString();
     if (!is_voice_call_type(notify_box_type))
     {
         LL_INFOS("IMVIEW") << "IncomingCall: notify_box_type was not provided" << LL_ENDL;
-        return TRUE;
+        return true;
     }
 
     // init notification's lifetime
@@ -2845,7 +2844,7 @@ BOOL LLIncomingCallDialog::postBuild()
     }
 
     std::string call_type;
-    if (gAgent.isInGroup(session_id, TRUE))
+    if (gAgent.isInGroup(session_id, true))
     {
         LLStringUtil::format_map_t args;
         LLGroupData data;
@@ -2896,8 +2895,8 @@ BOOL LLIncomingCallDialog::postBuild()
     bool is_avatar = LLVoiceClient::getInstance()->isParticipantAvatar(session_id);
     getChildView("Start IM")->setVisible( is_avatar && notify_box_type != "VoiceInviteAdHoc" && notify_box_type != "VoiceInviteGroup");
 
-    setCanDrag(FALSE);
-    return TRUE;
+    setCanDrag(false);
+    return true;
 }
 
 void LLIncomingCallDialog::setCallerName(const std::string& ui_title,
@@ -3017,7 +3016,7 @@ void LLIncomingCallDialog::processCallResponse(S32 response, const LLSD &payload
                 case IM_SESSION_CONFERENCE_START:
                 case IM_SESSION_GROUP_START:
                 case IM_SESSION_INVITE:
-                    if (gAgent.isInGroup(session_id, TRUE))
+                    if (gAgent.isInGroup(session_id, true))
                     {
                         LLGroupData data;
                         if (!gAgent.getGroupData(session_id, data)) break;
@@ -3125,7 +3124,7 @@ LLIMMgr::LLIMMgr()
 
     LLIMModel::getInstance()->addNewMsgCallback(boost::bind(&LLFloaterIMSession::sRemoveTypingIndicator, _1));
 
-    gSavedPerAccountSettings.declareBOOL("FetchGroupChatHistory", TRUE, "Fetch recent messages from group chat servers when a group window opens", LLControlVariable::PERSIST_ALWAYS);
+    gSavedPerAccountSettings.declareBOOL("FetchGroupChatHistory", true, "Fetch recent messages from group chat servers when a group window opens", LLControlVariable::PERSIST_ALWAYS);
 }
 
 // Add a message to a session.
@@ -3239,7 +3238,7 @@ void LLIMMgr::addMessage(
             }
 
             //Play sound for new conversations
-            if (!skip_message & !gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundNewConversation") == TRUE))
+            if (!skip_message & !gAgent.isDoNotDisturb() && (gSavedSettings.getBOOL("PlaySoundNewConversation")))
             {
                 make_ui_sound("UISndNewIncomingIMSession");
             }
@@ -3501,7 +3500,7 @@ void LLIMMgr::inviteToSession(
     // voice invite question is different from default only for group call (EXT-7118)
     std::string question_type = "VoiceInviteQuestionDefault";
 
-    BOOL voice_invite = FALSE;
+    bool voice_invite = false;
     bool is_linden = LLMuteList::isLinden(caller_name);
 
 
@@ -3509,21 +3508,21 @@ void LLIMMgr::inviteToSession(
     {
         //P2P is different...they only have voice invitations
         notify_box_type = "VoiceInviteP2P";
-        voice_invite = TRUE;
+        voice_invite = true;
     }
-    else if ( gAgent.isInGroup(session_id, TRUE) )
+    else if ( gAgent.isInGroup(session_id, true) )
     {
         //only really old school groups have voice invitations
         notify_box_type = "VoiceInviteGroup";
         question_type = "VoiceInviteQuestionGroup";
-        voice_invite = TRUE;
+        voice_invite = true;
     }
     else if ( inv_type == INVITATION_TYPE_VOICE )
     {
         //else it's an ad-hoc
         //and a voice ad-hoc
         notify_box_type = "VoiceInviteAdHoc";
-        voice_invite = TRUE;
+        voice_invite = true;
     }
     else if ( inv_type == INVITATION_TYPE_IMMEDIATE )
     {
@@ -3614,7 +3613,7 @@ void LLIMMgr::inviteToSession(
         }
         else
         {
-            LLFloaterReg::showInstance("incoming_call", payload, FALSE);
+            LLFloaterReg::showInstance("incoming_call", payload, false);
         }
 
         // Add the caller to the Recent List here (at this point
@@ -3636,7 +3635,7 @@ void LLIMMgr::onInviteNameLookup(LLSD payload, const LLUUID& id, const LLAvatarN
 
     std::string notify_box_type = payload["notify_box_type"].asString();
 
-    LLFloaterReg::showInstance("incoming_call", payload, FALSE);
+    LLFloaterReg::showInstance("incoming_call", payload, false);
 }
 
 //*TODO disconnects all sessions
@@ -3645,7 +3644,7 @@ void LLIMMgr::disconnectAllSessions()
     //*TODO disconnects all IM sessions
 }
 
-BOOL LLIMMgr::hasSession(const LLUUID& session_id)
+bool LLIMMgr::hasSession(const LLUUID& session_id)
 {
     return LLIMModel::getInstance()->findIMSession(session_id) != NULL;
 }
@@ -3874,7 +3873,7 @@ bool LLIMMgr::endCall(const LLUUID& session_id)
     if (im_session)
     {
         // need to update speakers' state
-        im_session->mSpeakers->update(FALSE);
+        im_session->mSpeakers->update(false);
     }
     return true;
 }
@@ -3934,7 +3933,7 @@ void LLIMMgr::noteOfflineUsers(
     const LLUUID& session_id,
     const std::vector<LLUUID>& ids)
 {
-    S32 count = ids.size();
+    auto count = ids.size();
     if(count == 0)
     {
         const std::string& only_user = LLTrans::getString("only_user_message");
@@ -3972,7 +3971,7 @@ void LLIMMgr::noteMutedUsers(const LLUUID& session_id,
         return;
     }
 
-    S32 count = ids.size();
+    auto count = ids.size();
     if(count > 0)
     {
         LLIMModel* im_model = LLIMModel::getInstance();
@@ -3992,15 +3991,15 @@ void LLIMMgr::noteMutedUsers(const LLUUID& session_id,
 
 void LLIMMgr::processIMTypingStart(const LLUUID& from_id, const EInstantMessage im_type)
 {
-    processIMTypingCore(from_id, im_type, TRUE);
+    processIMTypingCore(from_id, im_type, true);
 }
 
 void LLIMMgr::processIMTypingStop(const LLUUID& from_id, const EInstantMessage im_type)
 {
-    processIMTypingCore(from_id, im_type, FALSE);
+    processIMTypingCore(from_id, im_type, false);
 }
 
-void LLIMMgr::processIMTypingCore(const LLUUID& from_id, const EInstantMessage im_type, BOOL typing)
+void LLIMMgr::processIMTypingCore(const LLUUID& from_id, const EInstantMessage im_type, bool typing)
 {
     LLUUID session_id = computeSessionID(im_type, from_id);
     LLFloaterIMSession* im_floater = LLFloaterIMSession::findInstance(session_id);
@@ -4210,7 +4209,7 @@ public:
             time_t timestamp =
                 (time_t) message_params["timestamp"].asInteger();
 
-            BOOL is_do_not_disturb = gAgent.isDoNotDisturb();
+            bool is_do_not_disturb = gAgent.isDoNotDisturb();
 
             //don't return if user is muted b/c proper way to ignore a muted user who
             //initiated an adhoc/group conference is to create then leave the session (see STORM-1731)
@@ -4270,7 +4269,7 @@ public:
                 return;
             }
 
-            BOOL session_type_p2p = input["body"]["voice"].get("invitation_type").asInteger() == EMultiAgentChatSessionType::P2P_CHAT_SESSION;
+            bool session_type_p2p = input["body"]["voice"].get("invitation_type").asInteger() == EMultiAgentChatSessionType::P2P_CHAT_SESSION;
             LL_DEBUGS("Voice") << "Received voice information from the server: " << input["body"]<< LL_ENDL;
             gIMMgr->inviteToSession(
                 input["body"]["session_id"].asUUID(),
diff --git a/indra/newview/llimview.h b/indra/newview/llimview.h
index 9fd5e9d5c4..99b19c9fa9 100644
--- a/indra/newview/llimview.h
+++ b/indra/newview/llimview.h
@@ -51,7 +51,7 @@ class LLSessionTimeoutTimer : public LLEventTimer
 public:
     LLSessionTimeoutTimer(const LLUUID& session_id, F32 period) : LLEventTimer(period), mSessionId(session_id) {}
     virtual ~LLSessionTimeoutTimer() {};
-    /* virtual */ BOOL tick();
+    /* virtual */ bool tick();
 
 private:
     LLUUID mSessionId;
@@ -300,7 +300,7 @@ public:
     static void sendLeaveSession(const LLUUID& session_id, const LLUUID& other_participant_id);
     static bool sendStartSession(const LLUUID& temp_session_id, const LLUUID& other_participant_id,
                           const uuid_vec_t& ids, EInstantMessage dialog, bool p2p_as_adhoc_call);
-    static void sendTypingState(LLUUID session_id, LLUUID other_participant_id, BOOL typing);
+    static void sendTypingState(LLUUID session_id, LLUUID other_participant_id, bool typing);
     static void sendMessage(const std::string& utf8_text, const LLUUID& im_session_id,
                                 const LLUUID& other_participant_id, EInstantMessage dialog);
 
@@ -333,7 +333,7 @@ class LLIMSessionObserver
 {
 public:
     virtual ~LLIMSessionObserver() {}
-    virtual void sessionAdded(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id, BOOL has_offline_msg) = 0;
+    virtual void sessionAdded(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id, bool has_offline_msg) = 0;
     virtual void sessionActivated(const LLUUID& session_id, const std::string& name, const LLUUID& other_participant_id) = 0;
     virtual void sessionVoiceOrIMStarted(const LLUUID& session_id) = 0;
     virtual void sessionRemoved(const LLUUID& session_id) = 0;
@@ -441,7 +441,7 @@ public:
     // good connection.
     void disconnectAllSessions();
 
-    BOOL hasSession(const LLUUID& session_id);
+    bool hasSession(const LLUUID& session_id);
 
     static LLUUID computeSessionID(EInstantMessage dialog, const LLUUID& other_participant_id);
 
@@ -501,7 +501,7 @@ private:
     void noteOfflineUsers(const LLUUID& session_id, const std::vector<LLUUID>& ids);
     void noteMutedUsers(const LLUUID& session_id, const std::vector<LLUUID>& ids);
 
-    void processIMTypingCore(const LLUUID& from_id, const EInstantMessage im_type, BOOL typing);
+    void processIMTypingCore(const LLUUID& from_id, const EInstantMessage im_type, bool typing);
 
     static void onInviteNameLookup(LLSD payload, const LLUUID& id, const LLAvatarName& name);
 
@@ -556,7 +556,7 @@ public:
     LLCallDialog(const LLSD& payload);
     virtual ~LLCallDialog();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     void dockToToolbarButton(const std::string& toolbarButtonName);
 
@@ -601,7 +601,7 @@ public:
         }
     }
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
     static void onAccept(void* user_data);
@@ -627,7 +627,7 @@ class LLOutgoingCallDialog : public LLCallDialog
 public:
     LLOutgoingCallDialog(const LLSD& payload);
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     void show(const LLSD& key);
 
     static void onCancel(void* user_data);
diff --git a/indra/newview/llinspect.cpp b/indra/newview/llinspect.cpp
index 101b9bdc2d..bfef4860c4 100644
--- a/indra/newview/llinspect.cpp
+++ b/indra/newview/llinspect.cpp
@@ -93,15 +93,15 @@ void LLInspect::onFocusLost()
 }
 
 // virtual
-BOOL LLInspect::handleHover(S32 x, S32 y, MASK mask)
+bool LLInspect::handleHover(S32 x, S32 y, MASK mask)
 {
     mOpenTimer.pause();
     return LLView::handleHover(x, y, mask);
 }
 
-BOOL LLInspect::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLInspect::handleToolTip(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
 
     //delegate handling of tooltip to the hovered child
@@ -115,7 +115,7 @@ BOOL LLInspect::handleToolTip(S32 x, S32 y, MASK mask)
         //set up delay if there is no visible tooltip at this moment
         params.delay_time =  LLToolTipMgr::instance().toolTipVisible() ? 0.f : LLUI::getInstance()->mSettingGroups["config"]->getF32( "ToolTipDelay" );
         LLToolTipMgr::instance().show(params);
-        handled = TRUE;
+        handled = true;
     }
     return handled;
 }
diff --git a/indra/newview/llinspect.h b/indra/newview/llinspect.h
index 881043389d..8113bf460b 100644
--- a/indra/newview/llinspect.h
+++ b/indra/newview/llinspect.h
@@ -40,8 +40,8 @@ public:
     /// Inspectors have a custom fade-in/fade-out animation
     /*virtual*/ void draw();
 
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleToolTip(S32 x, S32 y, MASK mask);
     /*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask);
 
     /// Start open animation
diff --git a/indra/newview/llinspectavatar.cpp b/indra/newview/llinspectavatar.cpp
index 2bd4796bd0..b03b7beed6 100644
--- a/indra/newview/llinspectavatar.cpp
+++ b/indra/newview/llinspectavatar.cpp
@@ -67,7 +67,7 @@ public:
     LLInspectAvatar(const LLSD& avatar_id);
     virtual ~LLInspectAvatar();
 
-    /*virtual*/ BOOL postBuild(void);
+    /*virtual*/ bool postBuild(void);
 
     // Because floater is single instance, need to re-parse data on each spawn
     // (for example, inspector about same avatar but in different position)
@@ -179,7 +179,7 @@ LLInspectAvatar::~LLInspectAvatar()
 }
 
 /*virtual*/
-BOOL LLInspectAvatar::postBuild(void)
+bool LLInspectAvatar::postBuild(void)
 {
     getChild<LLUICtrl>("mute_btn")->setCommitCallback(
         boost::bind(&LLInspectAvatar::onClickMuteVolume, this) );
@@ -187,7 +187,7 @@ BOOL LLInspectAvatar::postBuild(void)
     getChild<LLUICtrl>("volume_slider")->setCommitCallback(
         boost::bind(&LLInspectAvatar::onVolumeChange, this, _2));
 
-    return TRUE;
+    return true;
 }
 
 // Multiple calls to showInstance("inspect_avatar", foo) will provide different
@@ -265,8 +265,8 @@ void LLInspectAvatar::processAvatarData(LLAvatarData* data)
     std::string birth_date = LLTrans::getString(data->hide_age ?
         "AvatarBirthDateFormatShort" :
         "AvatarBirthDateFormatFull");
-    LLStringUtil::format(birth_date, LLSD().with("datetime", (S32)data->born_on.secondsSinceEpoch()));
-    args["[BORN_ON]"] = birth_date;
+        LLStringUtil::format(birth_date, LLSD().with("datetime", (S32) data->born_on.secondsSinceEpoch()));
+        args["[BORN_ON]"] = birth_date;
     args["[AGE]"] = data->hide_age ?
         LLStringUtilBase<char>::null :
         LLDateUtil::ageFromDate(data->born_on, LLDate::now());
diff --git a/indra/newview/llinspectobject.cpp b/indra/newview/llinspectobject.cpp
index eccc359a3a..eb2cdb8632 100644
--- a/indra/newview/llinspectobject.cpp
+++ b/indra/newview/llinspectobject.cpp
@@ -70,7 +70,7 @@ public:
     LLInspectObject(const LLSD& object_id);
     virtual ~LLInspectObject();
 
-    /*virtual*/ BOOL postBuild(void);
+    /*virtual*/ bool postBuild(void);
 
     // Because floater is single instance, need to re-parse data on each spawn
     // (for example, inspector about same avatar but in different position)
@@ -149,7 +149,7 @@ LLInspectObject::~LLInspectObject()
 }
 
 /*virtual*/
-BOOL LLInspectObject::postBuild(void)
+bool LLInspectObject::postBuild(void)
 {
     // The XML file has sample data in it.  Clear that out so we don't
     // flicker when data arrives off network.
@@ -187,7 +187,7 @@ BOOL LLInspectObject::postBuild(void)
             boost::bind(&LLInspectObject::update, this));
     }
 
-    return TRUE;
+    return true;
 }
 
 // Multiple calls to showInstance("inspect_avatar", foo) will provide different
@@ -218,14 +218,14 @@ void LLInspectObject::onOpen(const LLSD& data)
         LLViewerMediaFocus::getInstance()->clearFocus();
 
         LLSelectMgr::instance().deselectAll();
-        mObjectSelection = LLSelectMgr::instance().selectObjectAndFamily(obj,FALSE,TRUE);
+        mObjectSelection = LLSelectMgr::instance().selectObjectAndFamily(obj,false,true);
 
         // Mark this as a transient selection
         struct SetTransient : public LLSelectedNodeFunctor
         {
             bool apply(LLSelectNode* node)
             {
-                node->setTransient(TRUE);
+                node->setTransient(true);
                 return true;
             }
         } functor;
@@ -372,7 +372,7 @@ void LLInspectObject::updateButtons(LLSelectNode* nodep)
     }
 
     // No flash
-    focusFirstItem(FALSE, FALSE);
+    focusFirstItem(false, false);
 }
 
 void LLInspectObject::updateSitLabel(LLSelectNode* nodep)
diff --git a/indra/newview/llinspectremoteobject.cpp b/indra/newview/llinspectremoteobject.cpp
index bf4ca40397..0060fe544d 100644
--- a/indra/newview/llinspectremoteobject.cpp
+++ b/indra/newview/llinspectremoteobject.cpp
@@ -51,7 +51,7 @@ public:
     LLInspectRemoteObject(const LLSD& object_id);
     virtual ~LLInspectRemoteObject() {};
 
-    /*virtual*/ BOOL postBuild(void);
+    /*virtual*/ bool postBuild(void);
     /*virtual*/ void onOpen(const LLSD& avatar_id);
 
     void onClickMap();
@@ -80,7 +80,7 @@ LLInspectRemoteObject::LLInspectRemoteObject(const LLSD& sd) :
 }
 
 /*virtual*/
-BOOL LLInspectRemoteObject::postBuild(void)
+bool LLInspectRemoteObject::postBuild(void)
 {
     // hook up the inspector's buttons
     getChild<LLUICtrl>("map_btn")->setCommitCallback(
@@ -90,7 +90,7 @@ BOOL LLInspectRemoteObject::postBuild(void)
     getChild<LLUICtrl>("close_btn")->setCommitCallback(
         boost::bind(&LLInspectRemoteObject::onClickClose, this));
 
-    return TRUE;
+    return true;
 }
 
 /*virtual*/
diff --git a/indra/newview/llinspecttexture.cpp b/indra/newview/llinspecttexture.cpp
index add9a22f15..75366c4831 100644
--- a/indra/newview/llinspecttexture.cpp
+++ b/indra/newview/llinspecttexture.cpp
@@ -146,7 +146,7 @@ void LLTexturePreviewView::draw()
         if (4 == m_Image->getComponents())
         {
             const LLColor4 color(.098f, .098f, .098f);
-            gl_rect_2d(rctClient, color, TRUE);
+            gl_rect_2d(rctClient, color, true);
         }
         gl_draw_scaled_image(rctClient.mLeft, rctClient.mBottom, rctClient.getWidth(), rctClient.getHeight(), m_Image);
 
diff --git a/indra/newview/llinspecttoast.cpp b/indra/newview/llinspecttoast.cpp
index 2e05893489..e3bf960c6d 100644
--- a/indra/newview/llinspecttoast.cpp
+++ b/indra/newview/llinspecttoast.cpp
@@ -46,7 +46,7 @@ public:
     virtual ~LLInspectToast();
 
     /*virtual*/ void onOpen(const LLSD& notification_id);
-    /*virtual*/ BOOL handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleToolTip(S32 x, S32 y, MASK mask);
     /*virtual*/ void deleteAllChildren();
     /*virtual*/ void removeChild(LLView* child);
 private:
@@ -96,14 +96,14 @@ void LLInspectToast::onOpen(const LLSD& notification_id)
         LL_WARNS() << "Could not get toast's panel." << LL_ENDL;
         return;
     }
-    panel->setVisible(TRUE);
-    panel->setMouseOpaque(FALSE);
+    panel->setVisible(true);
+    panel->setMouseOpaque(false);
     if(mPanel != NULL && mPanel->getParent() == this)
     {
         LLInspect::removeChild(mPanel);
     }
     addChild(panel);
-    panel->setFocus(TRUE);
+    panel->setFocus(true);
     mPanel = panel;
 
 
@@ -115,7 +115,7 @@ void LLInspectToast::onOpen(const LLSD& notification_id)
 }
 
 // virtual
-BOOL LLInspectToast::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLInspectToast::handleToolTip(S32 x, S32 y, MASK mask)
 {
     // We don't like the way LLInspect handles tooltips
     // (black tooltips look weird),
diff --git a/indra/newview/llinventorybridge.cpp b/indra/newview/llinventorybridge.cpp
index bbd8e20c68..df57504969 100644
--- a/indra/newview/llinventorybridge.cpp
+++ b/indra/newview/llinventorybridge.cpp
@@ -124,7 +124,7 @@ bool isMarketplaceSendAction(const std::string& action)
 
 bool isPanelActive(const std::string& panel_name)
 {
-    LLInventoryPanel *active_panel = LLInventoryPanel::getActiveInventoryPanel(FALSE);
+    LLInventoryPanel *active_panel = LLInventoryPanel::getActiveInventoryPanel(false);
     return (active_panel && (active_panel->getName() == panel_name));
 }
 
@@ -207,7 +207,7 @@ public:
                         panel->getRootFolder()->update();
                         has_elements = true;
                     }
-                    panel->getRootFolder()->changeSelection(item, TRUE);
+                    panel->getRootFolder()->changeSelection(item, true);
                 }
             }
         }
@@ -232,7 +232,7 @@ LLInvFVBridge::LLInvFVBridge(LLInventoryPanel* inventory,
     mUUID(uuid),
     mRoot(root),
     mInvType(LLInventoryType::IT_NONE),
-    mIsLink(FALSE),
+    mIsLink(false),
     LLFolderViewModelItemInventory(inventory->getRootViewModel())
 {
     mInventoryPanel = inventory->getInventoryPanelHandle();
@@ -309,23 +309,23 @@ void LLInvFVBridge::setCreationDate(time_t creation_date_utc)
 
 
 // Can be destroyed (or moved to trash)
-BOOL LLInvFVBridge::isItemRemovable(bool check_worn) const
+bool LLInvFVBridge::isItemRemovable(bool check_worn) const
 {
     return get_is_item_removable(getInventoryModel(), mUUID, check_worn);
 }
 
 // Can be moved to another folder
-BOOL LLInvFVBridge::isItemMovable() const
+bool LLInvFVBridge::isItemMovable() const
 {
-    return TRUE;
+    return true;
 }
 
-BOOL LLInvFVBridge::isLink() const
+bool LLInvFVBridge::isLink() const
 {
     return mIsLink;
 }
 
-BOOL LLInvFVBridge::isLibraryItem() const
+bool LLInvFVBridge::isLibraryItem() const
 {
     return gInventory.isObjectDescendentOf(getUUID(),gInventory.getLibraryRootFolderID());
 }
@@ -334,19 +334,19 @@ BOOL LLInvFVBridge::isLibraryItem() const
 /**
  * @brief Adds this item into clipboard storage
  */
-BOOL LLInvFVBridge::cutToClipboard()
+bool LLInvFVBridge::cutToClipboard()
 {
     const LLInventoryObject* obj = gInventory.getObject(mUUID);
     if (obj && isItemMovable() && isItemRemovable())
     {
         const LLUUID &marketplacelistings_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_MARKETPLACE_LISTINGS);
-        const BOOL cut_from_marketplacelistings = gInventory.isObjectDescendentOf(mUUID, marketplacelistings_id);
+        const bool cut_from_marketplacelistings = gInventory.isObjectDescendentOf(mUUID, marketplacelistings_id);
 
         if (cut_from_marketplacelistings && (LLMarketplaceData::instance().isInActiveFolder(mUUID) ||
                                              LLMarketplaceData::instance().isListedAndActive(mUUID)))
         {
             LLUUID parent_uuid = obj->getParentUUID();
-            BOOL result = perform_cutToClipboard();
+            bool result = perform_cutToClipboard();
             gInventory.addChangedMask(LLInventoryObserver::STRUCTURE, parent_uuid);
             return result;
         }
@@ -356,7 +356,7 @@ BOOL LLInvFVBridge::cutToClipboard()
             return perform_cutToClipboard();
         }
     }
-    return FALSE;
+    return false;
 }
 
 // virtual
@@ -370,17 +370,17 @@ bool LLInvFVBridge::isCutToClipboard()
 }
 
 // Callback for cutToClipboard if DAMA required...
-BOOL LLInvFVBridge::callback_cutToClipboard(const LLSD& notification, const LLSD& response)
+bool LLInvFVBridge::callback_cutToClipboard(const LLSD& notification, const LLSD& response)
 {
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
     if (option == 0) // YES
     {
         return perform_cutToClipboard();
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLInvFVBridge::perform_cutToClipboard()
+bool LLInvFVBridge::perform_cutToClipboard()
 {
     const LLInventoryObject* obj = gInventory.getObject(mUUID);
     if (obj && isItemMovable() && isItemRemovable())
@@ -388,24 +388,24 @@ BOOL LLInvFVBridge::perform_cutToClipboard()
         LLClipboard::instance().setCutMode(true);
         return LLClipboard::instance().addToClipboard(mUUID);
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLInvFVBridge::copyToClipboard() const
+bool LLInvFVBridge::copyToClipboard() const
 {
     const LLInventoryObject* obj = gInventory.getObject(mUUID);
     if (obj && isItemCopyable())
     {
         return LLClipboard::instance().addToClipboard(mUUID);
     }
-    return FALSE;
+    return false;
 }
 
 void LLInvFVBridge::showProperties()
 {
     if (isMarketplaceListingsFolder())
     {
-        LLFloaterReg::showInstance("item_properties", LLSD().with("id",mUUID),TRUE);
+        LLFloaterReg::showInstance("item_properties", LLSD().with("id",mUUID),true);
         // Force it to show on top as this floater has a tendency to hide when confirmation dialog shows up
         LLFloater* floater_properties = LLFloaterReg::findInstance("item_properties", LLSD().with("id",mUUID));
         if (floater_properties)
@@ -454,8 +454,8 @@ void LLInvFVBridge::removeBatch(std::vector<LLFolderViewModelItem*>& batch)
     LLViewerInventoryCategory* cat = NULL;
     LLInventoryModel::cat_array_t   descendent_categories;
     LLInventoryModel::item_array_t  descendent_items;
-    S32 count = batch.size();
-    S32 i,j;
+    size_t count = batch.size();
+    size_t i,j;
     for(i = 0; i < count; ++i)
     {
         bridge = (LLInvFVBridge*)(batch[i]);
@@ -476,7 +476,7 @@ void LLInvFVBridge::removeBatch(std::vector<LLFolderViewModelItem*>& batch)
         cat = (LLViewerInventoryCategory*)model->getCategory(bridge->getUUID());
         if (cat)
         {
-            gInventory.collectDescendents( cat->getUUID(), descendent_categories, descendent_items, FALSE );
+            gInventory.collectDescendents( cat->getUUID(), descendent_categories, descendent_items, false );
             for (j=0; j<descendent_items.size(); j++)
             {
                 if(LLAssetType::AT_GESTURE == descendent_items[j]->getType())
@@ -506,8 +506,8 @@ void  LLInvFVBridge::removeBatchNoCheck(std::vector<LLFolderViewModelItem*>&  ba
     uuid_vec_t move_ids;
     LLInventoryModel::update_map_t update;
     bool start_new_message = true;
-    S32 count = batch.size();
-    S32 i;
+    size_t count = batch.size();
+    size_t i;
 
     // first, hide any 'preview' floaters that correspond to the items
     // being deleted.
@@ -542,7 +542,7 @@ void  LLInvFVBridge::removeBatchNoCheck(std::vector<LLFolderViewModelItem*>&  ba
                 msg->nextBlockFast(_PREHASH_AgentData);
                 msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
                 msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
-                msg->addBOOLFast(_PREHASH_Stamp, TRUE);
+                msg->addBOOLFast(_PREHASH_Stamp, true);
             }
             msg->nextBlockFast(_PREHASH_InventoryData);
             msg->addUUIDFast(_PREHASH_ItemID, item->getUUID());
@@ -583,7 +583,7 @@ void  LLInvFVBridge::removeBatchNoCheck(std::vector<LLFolderViewModelItem*>&  ba
                 msg->nextBlockFast(_PREHASH_AgentData);
                 msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
                 msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
-                msg->addBOOL("Stamp", TRUE);
+                msg->addBOOL("Stamp", true);
             }
             msg->nextBlockFast(_PREHASH_InventoryData);
             msg->addUUIDFast(_PREHASH_FolderID, cat->getUUID());
@@ -620,40 +620,37 @@ void  LLInvFVBridge::removeBatchNoCheck(std::vector<LLFolderViewModelItem*>&  ba
     model->notifyObservers();
 }
 
-BOOL LLInvFVBridge::isClipboardPasteable() const
+bool LLInvFVBridge::isClipboardPasteable() const
 {
-    // Return FALSE on degenerated cases: empty clipboard, no inventory, no agent
+    // Return false on degenerated cases: empty clipboard, no inventory, no agent
     if (!LLClipboard::instance().hasContents() || !isAgentInventory())
     {
-        return FALSE;
+        return false;
     }
     LLInventoryModel* model = getInventoryModel();
     if (!model)
     {
-        return FALSE;
+        return false;
     }
 
     // In cut mode, whatever is on the clipboard is always pastable
     if (LLClipboard::instance().isCutMode())
     {
-        return TRUE;
+        return true;
     }
 
     // In normal mode, we need to check each element of the clipboard to know if we can paste or not
     std::vector<LLUUID> objects;
     LLClipboard::instance().pasteFromClipboard(objects);
-    S32 count = objects.size();
-    for(S32 i = 0; i < count; i++)
+    for (const auto& item_id : objects)
     {
-        const LLUUID &item_id = objects.at(i);
-
         // Folders are pastable if all items in there are copyable
         const LLInventoryCategory *cat = model->getCategory(item_id);
         if (cat)
         {
             LLFolderBridge cat_br(mInventoryPanel.get(), mRoot, item_id);
             if (!cat_br.isItemCopyable(false))
-            return FALSE;
+            return false;
             // Skip to the next item in the clipboard
             continue;
         }
@@ -662,49 +659,48 @@ BOOL LLInvFVBridge::isClipboardPasteable() const
         LLItemBridge item_br(mInventoryPanel.get(), mRoot, item_id);
         if (!item_br.isItemCopyable(false))
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLInvFVBridge::isClipboardPasteableAsLink() const
+bool LLInvFVBridge::isClipboardPasteableAsLink() const
 {
     if (!LLClipboard::instance().hasContents() || !isAgentInventory())
     {
-        return FALSE;
+        return false;
     }
     const LLInventoryModel* model = getInventoryModel();
     if (!model)
     {
-        return FALSE;
+        return false;
     }
 
     std::vector<LLUUID> objects;
     LLClipboard::instance().pasteFromClipboard(objects);
-    S32 count = objects.size();
-    for(S32 i = 0; i < count; i++)
+    for (const auto& item_id : objects)
     {
-        const LLInventoryItem *item = model->getItem(objects.at(i));
+        const LLInventoryItem *item = model->getItem(item_id);
         if (item)
         {
             if (!LLAssetType::lookupCanLink(item->getActualType()))
             {
-                return FALSE;
+                return false;
             }
 
             if (gInventory.isObjectDescendentOf(item->getUUID(), gInventory.getLibraryRootFolderID()))
             {
-                return FALSE;
+                return false;
             }
         }
-        const LLViewerInventoryCategory *cat = model->getCategory(objects.at(i));
+        const LLViewerInventoryCategory *cat = model->getCategory(item_id);
         if (cat && LLFolderType::lookupIsProtectedType(cat->getPreferredType()))
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 void disable_context_entries_if_present(LLMenuGL& menu,
@@ -738,12 +734,12 @@ void disable_context_entries_if_present(LLMenuGL& menu,
 
         if (found)
         {
-            menu_item->setVisible(TRUE);
+            menu_item->setVisible(true);
             // A bit of a hack so we can remember that some UI element explicitly set this to be visible
             // so that some other UI element from multi-select doesn't later set this invisible.
-            menu_item->pushVisible(TRUE);
+            menu_item->pushVisible(true);
 
-            menu_item->setEnabled(FALSE);
+            menu_item->setEnabled(false);
         }
     }
 }
@@ -792,7 +788,7 @@ void hide_context_entries(LLMenuGL& menu,
         {
             if (!menu_item->getLastVisible())
             {
-                menu_item->setVisible(FALSE);
+                menu_item->setVisible(false);
             }
 
             if (menu_item->getEnabled())
@@ -807,16 +803,16 @@ void hide_context_entries(LLMenuGL& menu,
                 menuentry_vec_t::const_iterator itor2 = std::find(exceptions.begin(), exceptions.end(), name);
                 if (itor2 == exceptions.end())
                 {
-                    menu_item->setEnabled(FALSE);
+                    menu_item->setEnabled(false);
                 }
             }
         }
         else
         {
-            menu_item->setVisible(TRUE);
+            menu_item->setVisible(true);
             // A bit of a hack so we can remember that some UI element explicitly set this to be visible
             // so that some other UI element from multi-select doesn't later set this invisible.
-            menu_item->pushVisible(TRUE);
+            menu_item->pushVisible(true);
 
             bool enabled = true;
             for (itor2 = disabled_entries.begin(); enabled && (itor2 != disabled_entries.end()); ++itor2)
@@ -1075,7 +1071,7 @@ void LLInvFVBridge::addDeleteContextMenuOptions(menuentry_vec_t &items,
 void LLInvFVBridge::addOpenRightClickMenuOption(menuentry_vec_t &items)
 {
     const LLInventoryObject *obj = getInventoryObject();
-    const BOOL is_link = (obj && obj->getIsLinkType());
+    const bool is_link = (obj && obj->getIsLinkType());
 
     if (is_link)
         items.push_back(std::string("Open Original"));
@@ -1187,11 +1183,11 @@ void LLInvFVBridge::addMarketplaceContextMenuOptions(U32 flags,
         LLUUID local_version_folder_id = nested_parent_id(mUUID,depth-1);
         LLInventoryModel::cat_array_t categories;
         LLInventoryModel::item_array_t items;
-        gInventory.collectDescendents(local_version_folder_id, categories, items, FALSE);
-        LLCachedControl<U32> max_depth(gSavedSettings, "InventoryOutboxMaxFolderDepth", 4);
-        LLCachedControl<U32> max_count(gSavedSettings, "InventoryOutboxMaxFolderCount", 20);
-        if (categories.size() >= max_count
-            || depth > (max_depth + 1))
+        gInventory.collectDescendents(local_version_folder_id, categories, items, false);
+        static LLCachedControl<U32> max_depth(gSavedSettings, "InventoryOutboxMaxFolderDepth", 4);
+        static LLCachedControl<U32> max_count(gSavedSettings, "InventoryOutboxMaxFolderCount", 20);
+        if (categories.size() >= (size_t)max_count
+            || (U32)depth > (max_depth + 1))
         {
             disabled_items.push_back(std::string("New Folder"));
         }
@@ -1233,9 +1229,9 @@ bool LLInvFVBridge::canMenuCut()
 }
 
 // *TODO: remove this
-BOOL LLInvFVBridge::startDrag(EDragAndDropType* type, LLUUID* id) const
+bool LLInvFVBridge::startDrag(EDragAndDropType* type, LLUUID* id) const
 {
-    BOOL rv = FALSE;
+    bool rv = false;
 
     const LLInventoryObject* obj = getInventoryObject();
 
@@ -1244,7 +1240,7 @@ BOOL LLInvFVBridge::startDrag(EDragAndDropType* type, LLUUID* id) const
         *type = LLViewerAssetType::lookupDragAndDropType(obj->getActualType());
         if(*type == DAD_NONE)
         {
-            return FALSE;
+            return false;
         }
 
         *id = obj->getUUID();
@@ -1255,7 +1251,7 @@ BOOL LLInvFVBridge::startDrag(EDragAndDropType* type, LLUUID* id) const
             LLInventoryModelBackgroundFetch::instance().start(obj->getUUID());
         }
 
-        rv = TRUE;
+        rv = true;
     }
 
     return rv;
@@ -1284,27 +1280,27 @@ LLInventoryFilter* LLInvFVBridge::getInventoryFilter() const
     return panel ? &(panel->getFilter()) : NULL;
 }
 
-BOOL LLInvFVBridge::isItemInTrash() const
+bool LLInvFVBridge::isItemInTrash() const
 {
     LLInventoryModel* model = getInventoryModel();
-    if(!model) return FALSE;
+    if(!model) return false;
     const LLUUID trash_id = model->findCategoryUUIDForType(LLFolderType::FT_TRASH);
     return model->isObjectDescendentOf(mUUID, trash_id);
 }
 
-BOOL LLInvFVBridge::isLinkedObjectInTrash() const
+bool LLInvFVBridge::isLinkedObjectInTrash() const
 {
-    if (isItemInTrash()) return TRUE;
+    if (isItemInTrash()) return true;
 
     const LLInventoryObject *obj = getInventoryObject();
     if (obj && obj->getIsLinkType())
     {
         LLInventoryModel* model = getInventoryModel();
-        if(!model) return FALSE;
+        if(!model) return false;
         const LLUUID trash_id = model->findCategoryUUIDForType(LLFolderType::FT_TRASH);
         return model->isObjectDescendentOf(obj->getLinkedUUID(), trash_id);
     }
-    return FALSE;
+    return false;
 }
 
 bool LLInvFVBridge::isItemInOutfits() const
@@ -1317,68 +1313,68 @@ bool LLInvFVBridge::isItemInOutfits() const
     return isCOFFolder() || (my_outfits_cat == mUUID) || model->isObjectDescendentOf(mUUID, my_outfits_cat);
 }
 
-BOOL LLInvFVBridge::isLinkedObjectMissing() const
+bool LLInvFVBridge::isLinkedObjectMissing() const
 {
     const LLInventoryObject *obj = getInventoryObject();
     if (!obj)
     {
-        return TRUE;
+        return true;
     }
     if (obj->getIsLinkType() && LLAssetType::lookupIsLinkType(obj->getType()))
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLInvFVBridge::isAgentInventory() const
+bool LLInvFVBridge::isAgentInventory() const
 {
     const LLInventoryModel* model = getInventoryModel();
-    if(!model) return FALSE;
-    if(gInventory.getRootFolderID() == mUUID) return TRUE;
+    if(!model) return false;
+    if(gInventory.getRootFolderID() == mUUID) return true;
     return model->isObjectDescendentOf(mUUID, gInventory.getRootFolderID());
 }
 
-BOOL LLInvFVBridge::isCOFFolder() const
+bool LLInvFVBridge::isCOFFolder() const
 {
     return LLAppearanceMgr::instance().getIsInCOF(mUUID);
 }
 
 // *TODO : Suppress isInboxFolder() once Merchant Outbox is fully deprecated
-BOOL LLInvFVBridge::isInboxFolder() const
+bool LLInvFVBridge::isInboxFolder() const
 {
     const LLUUID inbox_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_INBOX);
 
     if (inbox_id.isNull())
     {
-        return FALSE;
+        return false;
     }
 
     return gInventory.isObjectDescendentOf(mUUID, inbox_id);
 }
 
-BOOL LLInvFVBridge::isMarketplaceListingsFolder() const
+bool LLInvFVBridge::isMarketplaceListingsFolder() const
 {
     const LLUUID folder_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_MARKETPLACE_LISTINGS);
 
     if (folder_id.isNull())
     {
-        return FALSE;
+        return false;
     }
 
     return gInventory.isObjectDescendentOf(mUUID, folder_id);
 }
 
-BOOL LLInvFVBridge::isItemPermissive() const
+bool LLInvFVBridge::isItemPermissive() const
 {
-    return FALSE;
+    return false;
 }
 
 // static
 void LLInvFVBridge::changeItemParent(LLInventoryModel* model,
                                      LLViewerInventoryItem* item,
                                      const LLUUID& new_parent_id,
-                                     BOOL restamp)
+                                     bool restamp)
 {
     model->changeItemParent(item, new_parent_id, restamp);
 }
@@ -1387,7 +1383,7 @@ void LLInvFVBridge::changeItemParent(LLInventoryModel* model,
 void LLInvFVBridge::changeCategoryParent(LLInventoryModel* model,
                                          LLViewerInventoryCategory* cat,
                                          const LLUUID& new_parent_id,
-                                         BOOL restamp)
+                                         bool restamp)
 {
     model->changeCategoryParent(cat, new_parent_id, restamp);
 }
@@ -1912,7 +1908,7 @@ void LLItemBridge::restoreItem()
 
         const LLUUID new_parent = model->findCategoryUUIDForType(is_snapshot? LLFolderType::FT_SNAPSHOT_CATEGORY : LLFolderType::assetTypeToFolderType(item->getType()));
         // do not restamp on restore.
-        LLInvFVBridge::changeItemParent(model, item, new_parent, FALSE);
+        LLInvFVBridge::changeItemParent(model, item, new_parent, false);
     }
 }
 
@@ -2050,29 +2046,29 @@ std::string LLItemBridge::getLabelSuffix() const
     if(item)
     {
         // Any type can have the link suffix...
-        BOOL broken_link = LLAssetType::lookupIsLinkType(item->getType());
+        bool broken_link = LLAssetType::lookupIsLinkType(item->getType());
         if (broken_link) return BROKEN_LINK;
 
-        BOOL link = item->getIsLinkType();
+        bool link = item->getIsLinkType();
         if (link) return LINK;
 
         // ...but it's a bit confusing to put nocopy/nomod/etc suffixes on calling cards.
         if(LLAssetType::AT_CALLINGCARD != item->getType()
            && item->getPermissions().getOwner() == gAgent.getID())
         {
-            BOOL copy = item->getPermissions().allowCopyBy(gAgent.getID());
+            bool copy = item->getPermissions().allowCopyBy(gAgent.getID());
             if (!copy)
             {
                 suffix += " ";
                 suffix += NO_COPY;
             }
-            BOOL mod = item->getPermissions().allowModifyBy(gAgent.getID());
+            bool mod = item->getPermissions().allowModifyBy(gAgent.getID());
             if (!mod)
             {
                 suffix += suffix.empty() ? " " : ",";
                 suffix += NO_MOD;
             }
-            BOOL xfer = item->getPermissions().allowOperationBy(PERM_TRANSFER,
+            bool xfer = item->getPermissions().allowOperationBy(PERM_TRANSFER,
                                                                 gAgent.getID());
             if (!xfer)
             {
@@ -2095,7 +2091,7 @@ time_t LLItemBridge::getCreationDate() const
 }
 
 
-BOOL LLItemBridge::isItemRenameable() const
+bool LLItemBridge::isItemRenameable() const
 {
     LLViewerInventoryItem* item = getItem();
     if(item)
@@ -2104,32 +2100,32 @@ BOOL LLItemBridge::isItemRenameable() const
         // what the calling card points to.
         if (item->getInventoryType() == LLInventoryType::IT_CALLINGCARD)
         {
-            return FALSE;
+            return false;
         }
 
         if (!item->isFinished()) // EXT-8662
         {
-            return FALSE;
+            return false;
         }
 
         if (isInboxFolder())
         {
-            return FALSE;
+            return false;
         }
 
         return (item->getPermissions().allowModifyBy(gAgent.getID()));
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLItemBridge::renameItem(const std::string& new_name)
+bool LLItemBridge::renameItem(const std::string& new_name)
 {
     if(!isItemRenameable())
-        return FALSE;
+        return false;
     LLPreview::dirty(mUUID);
     LLInventoryModel* model = getInventoryModel();
     if(!model)
-        return FALSE;
+        return false;
     LLViewerInventoryItem* item = getItem();
     if(item && (item->getName() != new_name))
     {
@@ -2137,30 +2133,30 @@ BOOL LLItemBridge::renameItem(const std::string& new_name)
         updates["name"] = new_name;
         update_inventory_item(item->getUUID(),updates, NULL);
     }
-    // return FALSE because we either notified observers (& therefore
+    // return false because we either notified observers (& therefore
     // rebuilt) or we didn't update.
-    return FALSE;
+    return false;
 }
 
-BOOL LLItemBridge::removeItem()
+bool LLItemBridge::removeItem()
 {
     if(!isItemRemovable())
     {
-        return FALSE;
+        return false;
     }
 
     // move it to the trash
     LLInventoryModel* model = getInventoryModel();
-    if(!model) return FALSE;
+    if(!model) return false;
     const LLUUID& trash_id = model->findCategoryUUIDForType(LLFolderType::FT_TRASH);
     LLViewerInventoryItem* item = getItem();
-    if (!item) return FALSE;
+    if (!item) return false;
     if (item->getType() != LLAssetType::AT_LSL_TEXT)
     {
-        LLPreview::hide(mUUID, TRUE);
+        LLPreview::hide(mUUID, true);
     }
     // Already in trash
-    if (model->isObjectDescendentOf(mUUID, trash_id)) return FALSE;
+    if (model->isObjectDescendentOf(mUUID, trash_id)) return false;
 
     LLNotification::Params params("ConfirmItemDeleteHasLinks");
     params.functor.function(boost::bind(&LLItemBridge::confirmRemoveItem, this, _1, _2));
@@ -2175,42 +2171,41 @@ BOOL LLItemBridge::removeItem()
         if (!item->getIsLinkType())
         {
             LLInventoryModel::item_array_t item_array = gInventory.collectLinksTo(mUUID);
-            const U32 num_links = item_array.size();
-            if (num_links > 0)
+            if (!item_array.empty())
             {
                 // Warn if the user is will break any links when deleting this item.
                 LLNotifications::instance().add(params);
-                return FALSE;
+                return false;
             }
         }
     }
 
     LLNotifications::instance().forceResponse(params, 0);
     model->checkTrashOverflow();
-    return TRUE;
+    return true;
 }
 
-BOOL LLItemBridge::confirmRemoveItem(const LLSD& notification, const LLSD& response)
+bool LLItemBridge::confirmRemoveItem(const LLSD& notification, const LLSD& response)
 {
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
-    if (option != 0) return FALSE;
+    if (option != 0) return false;
 
     LLInventoryModel* model = getInventoryModel();
-    if (!model) return FALSE;
+    if (!model) return false;
 
     LLViewerInventoryItem* item = getItem();
-    if (!item) return FALSE;
+    if (!item) return false;
 
     const LLUUID& trash_id = model->findCategoryUUIDForType(LLFolderType::FT_TRASH);
     // if item is not already in trash
     if(item && !model->isObjectDescendentOf(mUUID, trash_id))
     {
         // move to trash, and restamp
-        LLInvFVBridge::changeItemParent(model, item, trash_id, TRUE);
+        LLInvFVBridge::changeItemParent(model, item, trash_id, true);
         // delete was successful
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 bool LLItemBridge::isItemCopyable(bool can_copy_as_link) const
@@ -2260,14 +2255,14 @@ const LLUUID& LLItemBridge::getThumbnailUUID() const
     return LLUUID::null;
 }
 
-BOOL LLItemBridge::isItemPermissive() const
+bool LLItemBridge::isItemPermissive() const
 {
     LLViewerInventoryItem* item = getItem();
     if(item)
     {
         return item->getIsFullPerm();
     }
-    return FALSE;
+    return false;
 }
 
 // +=================================================+
@@ -2277,17 +2272,17 @@ BOOL LLItemBridge::isItemPermissive() const
 LLHandle<LLFolderBridge> LLFolderBridge::sSelf;
 
 // Can be moved to another folder
-BOOL LLFolderBridge::isItemMovable() const
+bool LLFolderBridge::isItemMovable() const
 {
     LLInventoryObject* obj = getInventoryObject();
     if(obj)
     {
         // If it's a protected type folder, we can't move it
         if (LLFolderType::lookupIsProtectedType(((LLInventoryCategory*)obj)->getPreferredType()))
-            return FALSE;
-        return TRUE;
+            return false;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 void LLFolderBridge::selectItem()
@@ -2345,10 +2340,9 @@ void LLFolderBridge::buildDisplayName() const
 
 std::string LLFolderBridge::getLabelSuffix() const
 {
-    static LLCachedControl<F32> folder_loading_message_delay(gSavedSettings, "FolderLoadingMessageWaitTime", 0.5f);
     static LLCachedControl<bool> xui_debug(gSavedSettings, "DebugShowXUINames", 0);
 
-    if (mIsLoading && mTimeSinceRequestStart.getElapsedTimeF32() >= folder_loading_message_delay())
+    if (mIsLoading && mTimeSinceRequestStart.getElapsedTimeF32() >= FOLDER_LOADING_MESSAGE_DELAY)
     {
         return llformat(" ( %s ) ", LLTrans::getString("LoadingData").c_str());
     }
@@ -2375,9 +2369,9 @@ std::string LLFolderBridge::getLabelSuffix() const
     {
         LLInventoryModel::cat_array_t cat_array;
         LLInventoryModel::item_array_t item_array;
-        gInventory.collectDescendents(getUUID(), cat_array, item_array, TRUE);
-        S32 count = item_array.size();
-        if(count > 0)
+        gInventory.collectDescendents(getUUID(), cat_array, item_array, true);
+        auto count = item_array.size();
+        if (count > 0)
         {
             std::ostringstream oss;
             oss << count;
@@ -2424,30 +2418,30 @@ void LLFolderBridge::update()
 }
 
 // Can be destroyed (or moved to trash)
-BOOL LLFolderBridge::isItemRemovable(bool check_worn) const
+bool LLFolderBridge::isItemRemovable(bool check_worn) const
 {
     if (!get_is_category_and_children_removable(getInventoryModel(), mUUID, check_worn))
     {
-        return FALSE;
+        return false;
     }
 
     if (isMarketplaceListingsFolder()
         && (!LLMarketplaceData::instance().isSLMDataFetched() || LLMarketplaceData::instance().getActivationState(mUUID)))
     {
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLFolderBridge::isUpToDate() const
+bool LLFolderBridge::isUpToDate() const
 {
     LLInventoryModel* model = getInventoryModel();
-    if(!model) return FALSE;
+    if(!model) return false;
     LLViewerInventoryCategory* category = (LLViewerInventoryCategory*)model->getCategory(mUUID);
     if( !category )
     {
-        return FALSE;
+        return false;
     }
 
     return category->getVersion() != LLViewerInventoryCategory::VERSION_UNKNOWN;
@@ -2495,10 +2489,10 @@ bool LLFolderBridge::isItemCopyable(bool can_copy_as_link) const
     return true;
 }
 
-BOOL LLFolderBridge::isClipboardPasteable() const
+bool LLFolderBridge::isClipboardPasteable() const
 {
     if ( ! LLInvFVBridge::isClipboardPasteable() )
-        return FALSE;
+        return false;
 
     // Don't allow pasting duplicates to the Calling Card/Friends subfolders, see bug EXT-1599
     if ( LLFriendCardsManager::instance().isCategoryInFriendFolder( getCategory() ) )
@@ -2506,7 +2500,7 @@ BOOL LLFolderBridge::isClipboardPasteable() const
         LLInventoryModel* model = getInventoryModel();
         if ( !model )
         {
-            return FALSE;
+            return false;
         }
 
         std::vector<LLUUID> objects;
@@ -2515,44 +2509,42 @@ BOOL LLFolderBridge::isClipboardPasteable() const
 
         // Search for the direct descendent of current Friends subfolder among all pasted items,
         // and return false if is found.
-        for(S32 i = objects.size() - 1; i >= 0; --i)
+        for (S32 i = static_cast<S32>(objects.size()) - 1; i >= 0; --i)
         {
             const LLUUID &obj_id = objects.at(i);
             if ( LLFriendCardsManager::instance().isObjDirectDescendentOfCategory(model->getObject(obj_id), current_cat) )
             {
-                return FALSE;
+                return false;
             }
         }
 
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLFolderBridge::isClipboardPasteableAsLink() const
+bool LLFolderBridge::isClipboardPasteableAsLink() const
 {
     // Check normal paste-as-link permissions
     if (!LLInvFVBridge::isClipboardPasteableAsLink())
     {
-        return FALSE;
+        return false;
     }
 
     const LLInventoryModel* model = getInventoryModel();
     if (!model)
     {
-        return FALSE;
+        return false;
     }
 
     const LLViewerInventoryCategory *current_cat = getCategory();
     if (current_cat)
     {
-        const BOOL is_in_friend_folder = LLFriendCardsManager::instance().isCategoryInFriendFolder( current_cat );
+        const bool is_in_friend_folder = LLFriendCardsManager::instance().isCategoryInFriendFolder( current_cat );
         const LLUUID &current_cat_id = current_cat->getUUID();
         std::vector<LLUUID> objects;
         LLClipboard::instance().pasteFromClipboard(objects);
-        S32 count = objects.size();
-        for(S32 i = 0; i < count; i++)
+        for (const auto& obj_id : objects)
         {
-            const LLUUID &obj_id = objects.at(i);
             const LLInventoryCategory *cat = model->getCategory(obj_id);
             if (cat)
             {
@@ -2561,7 +2553,7 @@ BOOL LLFolderBridge::isClipboardPasteableAsLink() const
                 if ((cat_id == current_cat_id) ||
                     model->isObjectDescendentOf(current_cat_id, cat_id))
                 {
-                    return FALSE;
+                    return false;
                 }
             }
             // Don't allow pasting duplicates to the Calling Card/Friends subfolders, see bug EXT-1599
@@ -2572,30 +2564,30 @@ BOOL LLFolderBridge::isClipboardPasteableAsLink() const
                 // in case type of obj_id is LLInventoryItem.
                 if ( LLFriendCardsManager::instance().isObjDirectDescendentOfCategory(model->getObject(obj_id), current_cat) )
                 {
-                    return FALSE;
+                    return false;
                 }
             }
         }
     }
-    return TRUE;
+    return true;
 
 }
 
 
-BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
-                                            BOOL drop,
+bool LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
+                                            bool drop,
                                             std::string& tooltip_msg,
-                                            BOOL is_link,
-                                            BOOL user_confirm,
+                                            bool is_link,
+                                            bool user_confirm,
                                             LLPointer<LLInventoryCallback> cb)
 {
 
     LLInventoryModel* model = getInventoryModel();
 
-    if (!inv_cat) return FALSE; // shouldn't happen, but in case item is incorrectly parented in which case inv_cat will be NULL
-    if (!model) return FALSE;
-    if (!isAgentAvatarValid()) return FALSE;
-    if (!isAgentInventory()) return FALSE; // cannot drag categories into library
+    if (!inv_cat) return false; // shouldn't happen, but in case item is incorrectly parented in which case inv_cat will be NULL
+    if (!model) return false;
+    if (!isAgentAvatarValid()) return false;
+    if (!isAgentInventory()) return false; // cannot drag categories into library
 
     LLInventoryPanel* destination_panel = mInventoryPanel.get();
     if (!destination_panel) return false;
@@ -2608,18 +2600,18 @@ BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
     const LLUUID &marketplacelistings_id = model->findCategoryUUIDForType(LLFolderType::FT_MARKETPLACE_LISTINGS);
     const LLUUID from_folder_uuid = inv_cat->getParentUUID();
 
-    const BOOL move_is_into_current_outfit = (mUUID == current_outfit_id);
-    const BOOL move_is_into_marketplacelistings = model->isObjectDescendentOf(mUUID, marketplacelistings_id);
-    const BOOL move_is_from_marketplacelistings = model->isObjectDescendentOf(cat_id, marketplacelistings_id);
+    const bool move_is_into_current_outfit = (mUUID == current_outfit_id);
+    const bool move_is_into_marketplacelistings = model->isObjectDescendentOf(mUUID, marketplacelistings_id);
+    const bool move_is_from_marketplacelistings = model->isObjectDescendentOf(cat_id, marketplacelistings_id);
 
     // check to make sure source is agent inventory, and is represented there.
     LLToolDragAndDrop::ESource source = LLToolDragAndDrop::getInstance()->getSource();
-    const BOOL is_agent_inventory = (model->getCategory(cat_id) != NULL)
+    const bool is_agent_inventory = (model->getCategory(cat_id) != NULL)
         && (LLToolDragAndDrop::SOURCE_AGENT == source);
 
-    BOOL accept = FALSE;
+    bool accept = false;
     U64 filter_types = filter->getFilterTypes();
-    BOOL use_filter = filter_types && (filter_types&LLInventoryFilter::FILTERTYPE_DATE || (filter_types&LLInventoryFilter::FILTERTYPE_OBJECT)==0);
+    bool use_filter = filter_types && (filter_types&LLInventoryFilter::FILTERTYPE_DATE || (filter_types&LLInventoryFilter::FILTERTYPE_OBJECT)==0);
 
     if (is_agent_inventory)
     {
@@ -2628,44 +2620,44 @@ BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
         const LLUUID &my_outifts_id = model->findCategoryUUIDForType(LLFolderType::FT_MY_OUTFITS);
         const LLUUID &lost_and_found_id = model->findCategoryUUIDForType(LLFolderType::FT_LOST_AND_FOUND);
 
-        const BOOL move_is_into_trash = (mUUID == trash_id) || model->isObjectDescendentOf(mUUID, trash_id);
-        const BOOL move_is_into_my_outfits = (mUUID == my_outifts_id) || model->isObjectDescendentOf(mUUID, my_outifts_id);
-        const BOOL move_is_into_outfit = move_is_into_my_outfits || (getCategory() && getCategory()->getPreferredType()==LLFolderType::FT_OUTFIT);
-        const BOOL move_is_into_current_outfit = (getCategory() && getCategory()->getPreferredType()==LLFolderType::FT_CURRENT_OUTFIT);
-        const BOOL move_is_into_landmarks = (mUUID == landmarks_id) || model->isObjectDescendentOf(mUUID, landmarks_id);
-        const BOOL move_is_into_lost_and_found = model->isObjectDescendentOf(mUUID, lost_and_found_id);
+        const bool move_is_into_trash = (mUUID == trash_id) || model->isObjectDescendentOf(mUUID, trash_id);
+        const bool move_is_into_my_outfits = (mUUID == my_outifts_id) || model->isObjectDescendentOf(mUUID, my_outifts_id);
+        const bool move_is_into_outfit = move_is_into_my_outfits || (getCategory() && getCategory()->getPreferredType()==LLFolderType::FT_OUTFIT);
+        const bool move_is_into_current_outfit = (getCategory() && getCategory()->getPreferredType()==LLFolderType::FT_CURRENT_OUTFIT);
+        const bool move_is_into_landmarks = (mUUID == landmarks_id) || model->isObjectDescendentOf(mUUID, landmarks_id);
+        const bool move_is_into_lost_and_found = model->isObjectDescendentOf(mUUID, lost_and_found_id);
 
         //--------------------------------------------------------------------------------
         // Determine if folder can be moved.
         //
 
-        BOOL is_movable = TRUE;
+        bool is_movable = true;
 
         if (is_movable && (marketplacelistings_id == cat_id))
         {
-            is_movable = FALSE;
+            is_movable = false;
             tooltip_msg = LLTrans::getString("TooltipOutboxCannotMoveRoot");
         }
         if (is_movable && move_is_from_marketplacelistings && LLMarketplaceData::instance().getActivationState(cat_id))
         {
             // If the incoming folder is listed and active (and is therefore either the listing or the version folder),
             // then moving is *not* allowed
-            is_movable = FALSE;
+            is_movable = false;
             tooltip_msg = LLTrans::getString("TooltipOutboxDragActive");
         }
         if (is_movable && (mUUID == cat_id))
         {
-            is_movable = FALSE;
+            is_movable = false;
             tooltip_msg = LLTrans::getString("TooltipDragOntoSelf");
         }
         if (is_movable && (model->isObjectDescendentOf(mUUID, cat_id)))
         {
-            is_movable = FALSE;
+            is_movable = false;
             tooltip_msg = LLTrans::getString("TooltipDragOntoOwnChild");
         }
         if (is_movable && LLFolderType::lookupIsProtectedType(inv_cat->getPreferredType()))
         {
-            is_movable = FALSE;
+            is_movable = false;
             // tooltip?
         }
 
@@ -2700,21 +2692,21 @@ BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
         }
         if(is_movable && move_is_into_current_outfit && is_link)
         {
-            is_movable = FALSE;
+            is_movable = false;
         }
         if (is_movable && move_is_into_lost_and_found)
         {
-            is_movable = FALSE;
+            is_movable = false;
         }
         if (is_movable && (mUUID == model->findCategoryUUIDForType(LLFolderType::FT_FAVORITE)))
         {
-            is_movable = FALSE;
+            is_movable = false;
             // tooltip?
         }
         if (is_movable && (getPreferredType() == LLFolderType::FT_MARKETPLACE_STOCK))
         {
             // One cannot move a folder into a stock folder
-            is_movable = FALSE;
+            is_movable = false;
             // tooltip?
         }
 
@@ -2722,14 +2714,14 @@ BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
         LLInventoryModel::item_array_t descendent_items;
         if (is_movable)
         {
-            model->collectDescendents(cat_id, descendent_categories, descendent_items, FALSE);
+            model->collectDescendents(cat_id, descendent_categories, descendent_items, false);
             for (S32 i=0; i < descendent_categories.size(); ++i)
             {
                 LLInventoryCategory* category = descendent_categories[i];
                 if(LLFolderType::lookupIsProtectedType(category->getPreferredType()))
                 {
                     // Can't move "special folders" (e.g. Textures Folder).
-                    is_movable = FALSE;
+                    is_movable = false;
                     break;
                 }
             }
@@ -2750,7 +2742,7 @@ BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
             if (items.size() > max_items_to_wear)
             {
                 // Can't move 'large' folders into current outfit: MAINT-4086
-                is_movable = FALSE;
+                is_movable = false;
                 LLStringUtil::format_map_t args;
                 args["AMOUNT"] = llformat("%d", max_items_to_wear);
                 tooltip_msg = LLTrans::getString("TooltipTooManyWearables",args);
@@ -2763,7 +2755,7 @@ BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
                 LLInventoryItem* item = descendent_items[i];
                 if (get_is_item_worn(item->getUUID()))
                 {
-                    is_movable = FALSE;
+                    is_movable = false;
                     break; // It's generally movable, but not into the trash.
                 }
             }
@@ -2778,7 +2770,7 @@ BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
                 // We use getType() instead of getActua;Type() to allow links to landmarks and folders.
                 if (LLAssetType::AT_LANDMARK != item->getType() && LLAssetType::AT_CATEGORY != item->getType())
                 {
-                    is_movable = FALSE;
+                    is_movable = false;
                     break; // It's generally movable, but not into Landmarks.
                 }
             }
@@ -2794,7 +2786,7 @@ BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
 
         if (is_movable && !move_is_into_landmarks)
         {
-            LLInventoryPanel* active_panel = LLInventoryPanel::getActiveInventoryPanel(FALSE);
+            LLInventoryPanel* active_panel = LLInventoryPanel::getActiveInventoryPanel(false);
             is_movable = active_panel != NULL;
 
             // For a folder to pass the filter all its descendants are required to pass.
@@ -2900,7 +2892,7 @@ BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
                 inv_cat->getPreferredType() == LLFolderType::FT_OUTFIT))
             {
                 // traverse category and add all contents to currently worn.
-                BOOL append = true;
+                bool append = true;
                 LLAppearanceMgr::instance().wearInventoryCategory(inv_cat, false, append);
                 if (cb) cb->fire(inv_cat->getUUID());
             }
@@ -2965,7 +2957,7 @@ BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
         if (move_is_into_marketplacelistings)
         {
             tooltip_msg = LLTrans::getString("TooltipOutboxNotInInventory");
-            accept = FALSE;
+            accept = false;
         }
         else
         {
@@ -2992,7 +2984,7 @@ BOOL LLFolderBridge::dragCategoryIntoFolder(LLInventoryCategory* inv_cat,
         if (move_is_into_marketplacelistings)
         {
             tooltip_msg = LLTrans::getString("TooltipOutboxNotInInventory");
-            accept = FALSE;
+            accept = false;
         }
         else
         {
@@ -3052,9 +3044,9 @@ void warn_move_inventory(LLViewerObject* object, std::shared_ptr<LLMoveInv> move
 
 // Move/copy all inventory items from the Contents folder of an in-world
 // object to the agent's inventory, inside a given category.
-BOOL move_inv_category_world_to_agent(const LLUUID& object_id,
+bool move_inv_category_world_to_agent(const LLUUID& object_id,
                                       const LLUUID& category_id,
-                                      BOOL drop,
+                                      bool drop,
                                       std::function<void(S32, void*, const LLMoveInv*)> callback,
                                       void* user_data,
                                       LLInventoryFilter* filter)
@@ -3067,7 +3059,7 @@ BOOL move_inv_category_world_to_agent(const LLUUID& object_id,
     if(!object)
     {
         LL_INFOS() << "Object not found for drop." << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // this folder is coming from an object, as there is only one folder in an object, the root,
@@ -3078,12 +3070,12 @@ BOOL move_inv_category_world_to_agent(const LLUUID& object_id,
     if (inventory_objects.empty())
     {
         LL_INFOS() << "Object contents not found for drop." << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
-    BOOL accept = FALSE;
-    BOOL is_move = FALSE;
-    BOOL use_filter = FALSE;
+    bool accept = false;
+    bool is_move = false;
+    bool use_filter = false;
     if (filter)
     {
         U64 filter_types = filter->getFilterTypes();
@@ -3110,15 +3102,15 @@ BOOL move_inv_category_world_to_agent(const LLUUID& object_id,
             && perm.allowTransferTo(gAgent.getID())))
 //          || gAgent.isGodlike())
         {
-            accept = TRUE;
+            accept = true;
         }
         else if(object->permYouOwner())
         {
             // If the object cannot be copied, but the object the
             // inventory is owned by the agent, then the item can be
             // moved from the task to agent inventory.
-            is_move = TRUE;
-            accept = TRUE;
+            is_move = true;
+            accept = true;
         }
 
         if (accept && use_filter)
@@ -3194,13 +3186,13 @@ void LLRightClickInventoryFetchDescendentsObserver::execute(bool clear_observer)
         LLInventoryModel::item_array_t* item_array;
         gInventory.getDirectDescendentsOf(*current_folder, cat_array, item_array);
 
-        S32 item_count(0);
+        size_t item_count(0);
         if( item_array )
         {
             item_count = item_array->size();
         }
 
-        S32 cat_count(0);
+        size_t cat_count(0);
         if( cat_array )
         {
             cat_count = cat_array->size();
@@ -3219,18 +3211,18 @@ void LLRightClickInventoryFetchDescendentsObserver::execute(bool clear_observer)
         // Fetch the items
         if (item_count)
         {
-            for (S32 i = 0; i < item_count; ++i)
+            for (size_t i = 0; i < item_count; ++i)
             {
-                ids.push_back(item_array->at(i)->getUUID());
+                ids.emplace_back(item_array->at(i)->getUUID());
             }
             outfit = new LLRightClickInventoryFetchObserver(ids);
         }
         // Fetch the subfolders
         if (cat_count)
         {
-            for (S32 i = 0; i < cat_count; ++i)
+            for (size_t i = 0; i < cat_count; ++i)
             {
-                ids.push_back(cat_array->at(i)->getUUID());
+                ids.emplace_back(cat_array->at(i)->getUUID());
             }
             categories = new LLRightClickInventoryFetchDescendentsObserver(ids);
         }
@@ -3315,7 +3307,7 @@ void LLInventoryCopyAndWearObserver::changed(U32 mask)
             {
                 if ((*id_it) == mCatID)
                 {
-                    mFolderAdded = TRUE;
+                    mFolderAdded = true;
                     break;
                 }
             }
@@ -3335,7 +3327,7 @@ void LLInventoryCopyAndWearObserver::changed(U32 mask)
                     mContentsCount)
                 {
                     gInventory.removeObserver(this);
-                    LLAppearanceMgr::instance().wearInventoryCategory(category, FALSE, !mReplace);
+                    LLAppearanceMgr::instance().wearInventoryCategory(category, false, !mReplace);
                     delete this;
                 }
             }
@@ -3381,12 +3373,12 @@ void LLFolderBridge::performAction(LLInventoryModel* model, std::string action)
     }
     else if ("replaceoutfit" == action)
     {
-        modifyOutfit(FALSE);
+        modifyOutfit(false);
         return;
     }
     else if ("addtooutfit" == action)
     {
-        modifyOutfit(TRUE);
+        modifyOutfit(true);
         return;
     }
     else if ("show_in_main_panel" == action)
@@ -3615,7 +3607,7 @@ void LLFolderBridge::copyOutfitToClipboard()
     LLInventoryModel::item_array_t* item_array;
     gInventory.getDirectDescendentsOf(mUUID, cat_array, item_array);
 
-    S32 item_count(0);
+    size_t item_count(0);
     if( item_array )
     {
         item_count = item_array->size();
@@ -3623,7 +3615,7 @@ void LLFolderBridge::copyOutfitToClipboard()
 
     if (item_count)
     {
-        for (S32 i = 0; i < item_count;)
+        for (size_t i = 0; i < item_count;)
         {
             LLSD uuid =item_array->at(i)->getUUID();
             LLViewerInventoryItem* item = gInventory.getItem(uuid);
@@ -3637,7 +3629,7 @@ void LLFolderBridge::copyOutfitToClipboard()
         }
     }
 
-    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(text),0,text.size());
+    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(text), 0, static_cast<S32>(text.size()));
 }
 
 void LLFolderBridge::openItem()
@@ -3687,7 +3679,7 @@ void LLFolderBridge::determineFolderType()
     }
 }
 
-BOOL LLFolderBridge::isItemRenameable() const
+bool LLFolderBridge::isItemRenameable() const
 {
     return get_is_category_renameable(getInventoryModel(), mUUID);
 }
@@ -3701,7 +3693,7 @@ void LLFolderBridge::restoreItem()
         LLInventoryModel* model = getInventoryModel();
         const LLUUID new_parent = model->findCategoryUUIDForType(LLFolderType::assetTypeToFolderType(cat->getType()));
         // do not restamp children on restore
-        LLInvFVBridge::changeCategoryParent(model, cat, new_parent, FALSE);
+        LLInvFVBridge::changeCategoryParent(model, cat, new_parent, false);
     }
 }
 
@@ -3720,15 +3712,15 @@ LLFolderType::EType LLFolderBridge::getPreferredType() const
 // Icons for folders are based on the preferred type
 LLUIImagePtr LLFolderBridge::getIcon() const
 {
-    return getFolderIcon(FALSE);
+    return getFolderIcon(false);
 }
 
 LLUIImagePtr LLFolderBridge::getIconOpen() const
 {
-    return getFolderIcon(TRUE);
+    return getFolderIcon(true);
 }
 
-LLUIImagePtr LLFolderBridge::getFolderIcon(BOOL is_open) const
+LLUIImagePtr LLFolderBridge::getFolderIcon(bool is_open) const
 {
     LLFolderType::EType preferred_type = getPreferredType();
     return LLUI::getUIImage(LLViewerFolderType::lookupIconName(preferred_type, is_open));
@@ -3737,7 +3729,7 @@ LLUIImagePtr LLFolderBridge::getFolderIcon(BOOL is_open) const
 // static : use by LLLinkFolderBridge to get the closed type icons
 LLUIImagePtr LLFolderBridge::getIcon(LLFolderType::EType preferred_type)
 {
-    return LLUI::getUIImage(LLViewerFolderType::lookupIconName(preferred_type, FALSE));
+    return LLUI::getUIImage(LLViewerFolderType::lookupIconName(preferred_type, false));
 }
 
 LLUIImagePtr LLFolderBridge::getIconOverlay() const
@@ -3749,7 +3741,7 @@ LLUIImagePtr LLFolderBridge::getIconOverlay() const
     return NULL;
 }
 
-BOOL LLFolderBridge::renameItem(const std::string& new_name)
+bool LLFolderBridge::renameItem(const std::string& new_name)
 {
 
     LLScrollOnRenameObserver *observer = new LLScrollOnRenameObserver(mUUID, mRoot);
@@ -3757,16 +3749,16 @@ BOOL LLFolderBridge::renameItem(const std::string& new_name)
 
     rename_category(getInventoryModel(), mUUID, new_name);
 
-    // return FALSE because we either notified observers (& therefore
+    // return false because we either notified observers (& therefore
     // rebuilt) or we didn't update.
-    return FALSE;
+    return false;
 }
 
-BOOL LLFolderBridge::removeItem()
+bool LLFolderBridge::removeItem()
 {
     if(!isItemRemovable())
     {
-        return FALSE;
+        return false;
     }
     const LLViewerInventoryCategory *cat = getCategory();
 
@@ -3777,16 +3769,16 @@ BOOL LLFolderBridge::removeItem()
     LLNotification::Params params("ConfirmDeleteProtectedCategory");
     params.payload(payload).substitutions(args).functor.function(boost::bind(&LLFolderBridge::removeItemResponse, this, _1, _2));
     LLNotifications::instance().forceResponse(params, 0);
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLFolderBridge::removeSystemFolder()
+bool LLFolderBridge::removeSystemFolder()
 {
     const LLViewerInventoryCategory *cat = getCategory();
     if (!LLFolderType::lookupIsProtectedType(cat->getPreferredType()))
     {
-        return FALSE;
+        return false;
     }
 
     LLSD payload;
@@ -3798,7 +3790,7 @@ BOOL LLFolderBridge::removeSystemFolder()
     {
         LLNotifications::instance().add(params);
     }
-    return TRUE;
+    return true;
 }
 
 bool LLFolderBridge::removeItemResponse(const LLSD& notification, const LLSD& response)
@@ -3811,9 +3803,9 @@ bool LLFolderBridge::removeItemResponse(const LLSD& notification, const LLSD& re
         // move it to the trash
         LLPreview::hide(mUUID);
         getInventoryModel()->removeCategory(mUUID);
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 //Recursively update the folder's creation date
@@ -3835,9 +3827,9 @@ void LLFolderBridge::pasteFromClipboard()
     if (model && isClipboardPasteable())
     {
         const LLUUID &marketplacelistings_id = model->findCategoryUUIDForType(LLFolderType::FT_MARKETPLACE_LISTINGS);
-        const BOOL paste_into_marketplacelistings = model->isObjectDescendentOf(mUUID, marketplacelistings_id);
+        const bool paste_into_marketplacelistings = model->isObjectDescendentOf(mUUID, marketplacelistings_id);
 
-        BOOL cut_from_marketplacelistings = FALSE;
+        bool cut_from_marketplacelistings = false;
         if (LLClipboard::instance().isCutMode())
         {
             //Items are not removed from folder on "cut", so we need update listing folder on "paste" operation
@@ -3849,7 +3841,7 @@ void LLFolderBridge::pasteFromClipboard()
                 if(gInventory.isObjectDescendentOf(item_id, marketplacelistings_id) && (LLMarketplaceData::instance().isInActiveFolder(item_id) ||
                     LLMarketplaceData::instance().isListedAndActive(item_id)))
                 {
-                    cut_from_marketplacelistings = TRUE;
+                    cut_from_marketplacelistings = true;
                     break;
                 }
             }
@@ -3901,12 +3893,12 @@ void LLFolderBridge::perform_pasteFromClipboard()
         const LLUUID &my_outifts_id = model->findCategoryUUIDForType(LLFolderType::FT_MY_OUTFITS);
         const LLUUID &lost_and_found_id = model->findCategoryUUIDForType(LLFolderType::FT_LOST_AND_FOUND);
 
-        const BOOL move_is_into_current_outfit = (mUUID == current_outfit_id);
-        const BOOL move_is_into_my_outfits = (mUUID == my_outifts_id) || model->isObjectDescendentOf(mUUID, my_outifts_id);
-        const BOOL move_is_into_outfit = move_is_into_my_outfits || (getCategory() && getCategory()->getPreferredType()==LLFolderType::FT_OUTFIT);
-        const BOOL move_is_into_marketplacelistings = model->isObjectDescendentOf(mUUID, marketplacelistings_id);
-        const BOOL move_is_into_favorites = (mUUID == favorites_id);
-        const BOOL move_is_into_lost_and_found = model->isObjectDescendentOf(mUUID, lost_and_found_id);
+        const bool move_is_into_current_outfit = (mUUID == current_outfit_id);
+        const bool move_is_into_my_outfits = (mUUID == my_outifts_id) || model->isObjectDescendentOf(mUUID, my_outifts_id);
+        const bool move_is_into_outfit = move_is_into_my_outfits || (getCategory() && getCategory()->getPreferredType()==LLFolderType::FT_OUTFIT);
+        const bool move_is_into_marketplacelistings = model->isObjectDescendentOf(mUUID, marketplacelistings_id);
+        const bool move_is_into_favorites = (mUUID == favorites_id);
+        const bool move_is_into_lost_and_found = model->isObjectDescendentOf(mUUID, lost_and_found_id);
 
         std::vector<LLUUID> objects;
         LLClipboard::instance().pasteFromClipboard(objects);
@@ -3930,11 +3922,11 @@ void LLFolderBridge::perform_pasteFromClipboard()
                 LLInventoryItem *item = model->getItem(item_id);
                 LLInventoryCategory *cat = model->getCategory(item_id);
 
-                if (item && !can_move_item_to_marketplace(master_folder, dest_folder, item, error_msg, objects.size() - index, true))
+                if (item && !can_move_item_to_marketplace(master_folder, dest_folder, item, error_msg, static_cast<S32>(objects.size()) - index, true))
                 {
                     break;
                 }
-                if (cat && !can_move_folder_to_marketplace(master_folder, dest_folder, cat, error_msg, objects.size() - index, true, true))
+                if (cat && !can_move_folder_to_marketplace(master_folder, dest_folder, cat, error_msg, static_cast<S32>(objects.size()) - index, true, true))
                 {
                     break;
                 }
@@ -4034,7 +4026,7 @@ void LLFolderBridge::perform_pasteFromClipboard()
                             if (viitem)
                             {
                                 //changeItemParent() implicity calls dirtyFilter
-                                changeItemParent(model, viitem, parent_id, FALSE);
+                                changeItemParent(model, viitem, parent_id, false);
                                 if (cb) cb->fire(item_id);
                             }
                         }
@@ -4066,7 +4058,7 @@ void LLFolderBridge::perform_pasteFromClipboard()
                             else
                             {
                                 //changeCategoryParent() implicity calls dirtyFilter
-                                changeCategoryParent(model, vicat, parent_id, FALSE);
+                                changeCategoryParent(model, vicat, parent_id, false);
                             }
                             if (cb) cb->fire(item_id);
                         }
@@ -4088,7 +4080,7 @@ void LLFolderBridge::perform_pasteFromClipboard()
                             else
                             {
                                 //changeItemParent() implicity calls dirtyFilter
-                                changeItemParent(model, viitem, parent_id, FALSE);
+                                changeItemParent(model, viitem, parent_id, false);
                             }
                             if (cb) cb->fire(item_id);
                         }
@@ -4164,10 +4156,10 @@ void LLFolderBridge::pasteLinkFromClipboard()
         const LLUUID &marketplacelistings_id = model->findCategoryUUIDForType(LLFolderType::FT_MARKETPLACE_LISTINGS);
         const LLUUID &my_outifts_id = model->findCategoryUUIDForType(LLFolderType::FT_MY_OUTFITS);
 
-        const BOOL move_is_into_current_outfit = (mUUID == current_outfit_id);
-        const BOOL move_is_into_my_outfits = (mUUID == my_outifts_id) || model->isObjectDescendentOf(mUUID, my_outifts_id);
-        const BOOL move_is_into_outfit = move_is_into_my_outfits || (getCategory() && getCategory()->getPreferredType()==LLFolderType::FT_OUTFIT);
-        const BOOL move_is_into_marketplacelistings = model->isObjectDescendentOf(mUUID, marketplacelistings_id);
+        const bool move_is_into_current_outfit = (mUUID == current_outfit_id);
+        const bool move_is_into_my_outfits = (mUUID == my_outifts_id) || model->isObjectDescendentOf(mUUID, my_outifts_id);
+        const bool move_is_into_outfit = move_is_into_my_outfits || (getCategory() && getCategory()->getPreferredType()==LLFolderType::FT_OUTFIT);
+        const bool move_is_into_marketplacelistings = model->isObjectDescendentOf(mUUID, marketplacelistings_id);
 
         if (move_is_into_marketplacelistings)
         {
@@ -4220,7 +4212,7 @@ void LLFolderBridge::staticFolderOptionsMenu()
     }
 }
 
-BOOL LLFolderBridge::checkFolderForContentsOfType(LLInventoryModel* model, LLInventoryCollectFunctor& is_type)
+bool LLFolderBridge::checkFolderForContentsOfType(LLInventoryModel* model, LLInventoryCollectFunctor& is_type)
 {
     LLInventoryModel::cat_array_t cat_array;
     LLInventoryModel::item_array_t item_array;
@@ -4229,7 +4221,7 @@ BOOL LLFolderBridge::checkFolderForContentsOfType(LLInventoryModel* model, LLInv
                                 item_array,
                                 LLInventoryModel::EXCLUDE_TRASH,
                                 is_type);
-    return ((item_array.size() > 0) ? TRUE : FALSE );
+    return !item_array.empty();
 }
 
 void LLFolderBridge::buildContextMenuOptions(U32 flags, menuentry_vec_t&   items, menuentry_vec_t& disabled_items)
@@ -4401,12 +4393,12 @@ void LLFolderBridge::buildContextMenuOptions(U32 flags, menuentry_vec_t&   items
         }
 
         //Added by aura to force inventory pull on right-click to display folder options correctly. 07-17-06
-        mCallingCards = mWearables = FALSE;
+        mCallingCards = mWearables = false;
 
         LLIsType is_callingcard(LLAssetType::AT_CALLINGCARD);
         if (checkFolderForContentsOfType(model, is_callingcard))
         {
-            mCallingCards=TRUE;
+            mCallingCards=true;
         }
 
         LLFindWearables is_wearable;
@@ -4417,7 +4409,7 @@ void LLFolderBridge::buildContextMenuOptions(U32 flags, menuentry_vec_t&   items
             checkFolderForContentsOfType(model, is_object)   ||
             checkFolderForContentsOfType(model, is_gesture)    )
         {
-            mWearables=TRUE;
+            mWearables=true;
         }
     }
     else
@@ -4438,7 +4430,7 @@ void LLFolderBridge::buildContextMenuOptions(U32 flags, menuentry_vec_t&   items
             checkFolderForContentsOfType(model, is_object) ||
             checkFolderForContentsOfType(model, is_gesture))
         {
-            mWearables = TRUE;
+            mWearables = true;
         }
 
         if (!is_system_folder)
@@ -4647,13 +4639,13 @@ void LLFolderBridge::addOpenFolderMenuOptions(U32 flags, menuentry_vec_t& items)
 bool LLFolderBridge::hasChildren() const
 {
     LLInventoryModel* model = getInventoryModel();
-    if(!model) return FALSE;
+    if(!model) return false;
     LLInventoryModel::EHasChildren has_children;
     has_children = gInventory.categoryHasChildren(mUUID);
     return has_children != LLInventoryModel::CHILDREN_NO;
 }
 
-BOOL LLFolderBridge::dragOrDrop(MASK mask, BOOL drop,
+bool LLFolderBridge::dragOrDrop(MASK mask, bool drop,
                                 EDragAndDropType cargo_type,
                                 void* cargo_data,
                                 std::string& tooltip_msg)
@@ -4673,7 +4665,7 @@ BOOL LLFolderBridge::dragOrDrop(MASK mask, BOOL drop,
 
 
     //LL_INFOS() << "LLFolderBridge::dragOrDrop()" << LL_ENDL;
-    BOOL accept = FALSE;
+    bool accept = false;
     switch(cargo_type)
     {
         case DAD_TEXTURE:
@@ -4690,7 +4682,7 @@ BOOL LLFolderBridge::dragOrDrop(MASK mask, BOOL drop,
         case DAD_MESH:
         case DAD_SETTINGS:
         case DAD_MATERIAL:
-            accept = dragItemIntoFolder(inv_item, drop, tooltip_msg, TRUE, drop_cb);
+            accept = dragItemIntoFolder(inv_item, drop, tooltip_msg, true, drop_cb);
             break;
         case DAD_LINK:
             // DAD_LINK type might mean one of two asset types: AT_LINK or AT_LINK_FOLDER.
@@ -4701,22 +4693,22 @@ BOOL LLFolderBridge::dragOrDrop(MASK mask, BOOL drop,
                 LLInventoryCategory* linked_category = gInventory.getCategory(inv_item->getLinkedUUID());
                 if (linked_category)
                 {
-                    accept = dragCategoryIntoFolder((LLInventoryCategory*)linked_category, drop, tooltip_msg, TRUE, TRUE, drop_cb);
+                    accept = dragCategoryIntoFolder((LLInventoryCategory*)linked_category, drop, tooltip_msg, true, true, drop_cb);
                 }
             }
             else
             {
-                accept = dragItemIntoFolder(inv_item, drop, tooltip_msg, TRUE, drop_cb);
+                accept = dragItemIntoFolder(inv_item, drop, tooltip_msg, true, drop_cb);
             }
             break;
         case DAD_CATEGORY:
             if (LLFriendCardsManager::instance().isAnyFriendCategory(mUUID))
             {
-                accept = FALSE;
+                accept = false;
             }
             else
             {
-                accept = dragCategoryIntoFolder((LLInventoryCategory*)cargo_data, drop, tooltip_msg, FALSE, TRUE, drop_cb);
+                accept = dragCategoryIntoFolder((LLInventoryCategory*)cargo_data, drop, tooltip_msg, false, true, drop_cb);
             }
             break;
         case DAD_ROOT_CATEGORY:
@@ -4844,7 +4836,7 @@ void LLFolderBridge::createWearable(LLFolderBridge* bridge, LLWearableType::ETyp
     LLAgentWearables::createWearable(type, false, parent_id);
 }
 
-void LLFolderBridge::modifyOutfit(BOOL append)
+void LLFolderBridge::modifyOutfit(bool append)
 {
     LLInventoryModel* model = getInventoryModel();
     if(!model) return;
@@ -4872,12 +4864,12 @@ void LLFolderBridge::modifyOutfit(BOOL append)
 
     if (isAgentInventory())
     {
-        LLAppearanceMgr::instance().wearInventoryCategory(cat, FALSE, append);
+        LLAppearanceMgr::instance().wearInventoryCategory(cat, false, append);
     }
     else
     {
         // Library, we need to copy content first
-        LLAppearanceMgr::instance().wearInventoryCategory(cat, TRUE, append);
+        LLAppearanceMgr::instance().wearInventoryCategory(cat, true, append);
     }
 }
 
@@ -5084,15 +5076,15 @@ LLFolderBridge(inventory, root, uuid)
 
 LLUIImagePtr LLMarketplaceFolderBridge::getIcon() const
 {
-    return getMarketplaceFolderIcon(FALSE);
+    return getMarketplaceFolderIcon(false);
 }
 
 LLUIImagePtr LLMarketplaceFolderBridge::getIconOpen() const
 {
-    return getMarketplaceFolderIcon(TRUE);
+    return getMarketplaceFolderIcon(true);
 }
 
-LLUIImagePtr LLMarketplaceFolderBridge::getMarketplaceFolderIcon(BOOL is_open) const
+LLUIImagePtr LLMarketplaceFolderBridge::getMarketplaceFolderIcon(bool is_open) const
 {
     LLFolderType::EType preferred_type = getPreferredType();
     if (!LLMarketplaceData::instance().isUpdating(getUUID()))
@@ -5194,7 +5186,7 @@ bool move_task_inventory_callback(const LLSD& notification, const LLSD& response
         {
             LLInventoryObject::object_list_t inventory_objects;
             object->getInventoryContents(inventory_objects);
-            int contents_count = inventory_objects.size();
+            int contents_count = static_cast<int>(inventory_objects.size());
             LLInventoryCopyAndWearObserver* inventoryObserver = new LLInventoryCopyAndWearObserver(cat_and_wear->mCatID, contents_count, cat_and_wear->mFolderResponded,
                                                                                                     cat_and_wear->mReplace);
 
@@ -5232,8 +5224,8 @@ LLFolderBridge::LLFolderBridge(LLInventoryPanel* inventory,
                                LLFolderView* root,
                                const LLUUID& uuid)
     : LLInvFVBridge(inventory, root, uuid)
-    , mCallingCards(FALSE)
-    , mWearables(FALSE)
+    , mCallingCards(false)
+    , mWearables(false)
     , mIsLoading(false)
     , mShowDescendantsCount(false)
     , mCanDeleteFolderState(CDS_DONE)
@@ -5277,7 +5269,7 @@ void LLFolderBridge::dropToFavorites(LLInventoryItem* inv_item, LLPointer<LLInve
         callback);
 }
 
-void LLFolderBridge::dropToOutfit(LLInventoryItem* inv_item, BOOL move_is_into_current_outfit, LLPointer<LLInventoryCallback> cb)
+void LLFolderBridge::dropToOutfit(LLInventoryItem* inv_item, bool move_is_into_current_outfit, LLPointer<LLInventoryCallback> cb)
 {
     if((inv_item->getInventoryType() == LLInventoryType::IT_TEXTURE) || (inv_item->getInventoryType() == LLInventoryType::IT_SNAPSHOT))
     {
@@ -5373,7 +5365,7 @@ void LLFolderBridge::callback_dropItemIntoFolder(const LLSD& notification, const
     if (option == 0) // YES
     {
         std::string tooltip_msg;
-        dragItemIntoFolder(inv_item, TRUE, tooltip_msg, FALSE);
+        dragItemIntoFolder(inv_item, true, tooltip_msg, false);
     }
 }
 
@@ -5384,24 +5376,24 @@ void LLFolderBridge::callback_dropCategoryIntoFolder(const LLSD& notification, c
     if (option == 0) // YES
     {
         std::string tooltip_msg;
-        dragCategoryIntoFolder(inv_category, TRUE, tooltip_msg, FALSE, FALSE);
+        dragCategoryIntoFolder(inv_category, true, tooltip_msg, false, false);
     }
 }
 
 // This is used both for testing whether an item can be dropped
 // into the folder, as well as performing the actual drop, depending
-// if drop == TRUE.
-BOOL LLFolderBridge::dragItemIntoFolder(LLInventoryItem* inv_item,
-                                        BOOL drop,
+// if drop == true.
+bool LLFolderBridge::dragItemIntoFolder(LLInventoryItem* inv_item,
+                                        bool drop,
                                         std::string& tooltip_msg,
-                                        BOOL user_confirm,
+                                        bool user_confirm,
                                         LLPointer<LLInventoryCallback> cb)
 {
     LLInventoryModel* model = getInventoryModel();
 
-    if (!model || !inv_item) return FALSE;
-    if (!isAgentInventory()) return FALSE; // cannot drag into library
-    if (!isAgentAvatarValid()) return FALSE;
+    if (!model || !inv_item) return false;
+    if (!isAgentInventory()) return false; // cannot drag into library
+    if (!isAgentAvatarValid()) return false;
 
     LLInventoryPanel* destination_panel = mInventoryPanel.get();
     if (!destination_panel) return false;
@@ -5416,33 +5408,33 @@ BOOL LLFolderBridge::dragItemIntoFolder(LLInventoryItem* inv_item,
     const LLUUID &my_outifts_id = model->findCategoryUUIDForType(LLFolderType::FT_MY_OUTFITS);
     const LLUUID from_folder_uuid = inv_item->getParentUUID();
 
-    const BOOL move_is_into_current_outfit = (mUUID == current_outfit_id);
-    const BOOL move_is_into_favorites = (mUUID == favorites_id);
-    const BOOL move_is_into_my_outfits = (mUUID == my_outifts_id) || model->isObjectDescendentOf(mUUID, my_outifts_id);
-    const BOOL move_is_into_outfit = move_is_into_my_outfits || (getCategory() && getCategory()->getPreferredType()==LLFolderType::FT_OUTFIT);
-    const BOOL move_is_into_landmarks = (mUUID == landmarks_id) || model->isObjectDescendentOf(mUUID, landmarks_id);
-    const BOOL move_is_into_marketplacelistings = model->isObjectDescendentOf(mUUID, marketplacelistings_id);
-    const BOOL move_is_from_marketplacelistings = model->isObjectDescendentOf(inv_item->getUUID(), marketplacelistings_id);
+    const bool move_is_into_current_outfit = (mUUID == current_outfit_id);
+    const bool move_is_into_favorites = (mUUID == favorites_id);
+    const bool move_is_into_my_outfits = (mUUID == my_outifts_id) || model->isObjectDescendentOf(mUUID, my_outifts_id);
+    const bool move_is_into_outfit = move_is_into_my_outfits || (getCategory() && getCategory()->getPreferredType()==LLFolderType::FT_OUTFIT);
+    const bool move_is_into_landmarks = (mUUID == landmarks_id) || model->isObjectDescendentOf(mUUID, landmarks_id);
+    const bool move_is_into_marketplacelistings = model->isObjectDescendentOf(mUUID, marketplacelistings_id);
+    const bool move_is_from_marketplacelistings = model->isObjectDescendentOf(inv_item->getUUID(), marketplacelistings_id);
 
     LLToolDragAndDrop::ESource source = LLToolDragAndDrop::getInstance()->getSource();
-    BOOL accept = FALSE;
+    bool accept = false;
     U64 filter_types = filter->getFilterTypes();
     // We shouldn't allow to drop non recent items into recent tab (or some similar transactions)
     // while we are allowing to interact with regular filtered inventory
-    BOOL use_filter = filter_types && (filter_types&LLInventoryFilter::FILTERTYPE_DATE || (filter_types&LLInventoryFilter::FILTERTYPE_OBJECT)==0);
+    bool use_filter = filter_types && (filter_types&LLInventoryFilter::FILTERTYPE_DATE || (filter_types&LLInventoryFilter::FILTERTYPE_OBJECT)==0);
     LLViewerObject* object = NULL;
     if(LLToolDragAndDrop::SOURCE_AGENT == source)
     {
         const LLUUID &trash_id = model->findCategoryUUIDForType(LLFolderType::FT_TRASH);
 
-        const BOOL move_is_into_trash = (mUUID == trash_id) || model->isObjectDescendentOf(mUUID, trash_id);
-        const BOOL move_is_outof_current_outfit = LLAppearanceMgr::instance().getIsInCOF(inv_item->getUUID());
+        const bool move_is_into_trash = (mUUID == trash_id) || model->isObjectDescendentOf(mUUID, trash_id);
+        const bool move_is_outof_current_outfit = LLAppearanceMgr::instance().getIsInCOF(inv_item->getUUID());
 
         //--------------------------------------------------------------------------------
         // Determine if item can be moved.
         //
 
-        BOOL is_movable = TRUE;
+        bool is_movable = true;
 
         switch (inv_item->getActualType())
         {
@@ -5455,7 +5447,7 @@ BOOL LLFolderBridge::dragItemIntoFolder(LLInventoryItem* inv_item,
         // Can't explicitly drag things out of the COF.
         if (move_is_outof_current_outfit)
         {
-            is_movable = FALSE;
+            is_movable = false;
         }
         if (move_is_into_trash)
         {
@@ -5478,15 +5470,15 @@ BOOL LLFolderBridge::dragItemIntoFolder(LLInventoryItem* inv_item,
         // Determine if item can be moved & dropped
         // Note: if user_confirm is false, we already went through those accept logic test and can skip them
 
-        accept = TRUE;
+        accept = true;
 
         if (user_confirm && !is_movable)
         {
-            accept = FALSE;
+            accept = false;
         }
         else if (user_confirm && (mUUID == inv_item->getParentUUID()) && !move_is_into_favorites)
         {
-            accept = FALSE;
+            accept = false;
         }
         else if (user_confirm && (move_is_into_current_outfit || move_is_into_outfit))
         {
@@ -5510,7 +5502,7 @@ BOOL LLFolderBridge::dragItemIntoFolder(LLInventoryItem* inv_item,
             accept = dest_folder->acceptItem(inv_item);
         }
 
-        LLInventoryPanel* active_panel = LLInventoryPanel::getActiveInventoryPanel(FALSE);
+        LLInventoryPanel* active_panel = LLInventoryPanel::getActiveInventoryPanel(false);
 
         // Check whether the item being dragged from active inventory panel
         // passes the filter of the destination panel.
@@ -5639,26 +5631,26 @@ BOOL LLFolderBridge::dragItemIntoFolder(LLInventoryItem* inv_item,
         if (!object)
         {
             LL_INFOS() << "Object not found for drop." << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         // coming from a task. Need to figure out if the person can
         // move/copy this item.
         LLPermissions perm(inv_item->getPermissions());
-        BOOL is_move = FALSE;
+        bool is_move = false;
         if ((perm.allowCopyBy(gAgent.getID(), gAgent.getGroupID())
             && perm.allowTransferTo(gAgent.getID())))
             // || gAgent.isGodlike())
         {
-            accept = TRUE;
+            accept = true;
         }
         else if(object->permYouOwner())
         {
             // If the object cannot be copied, but the object the
             // inventory is owned by the agent, then the item can be
             // moved from the task to agent inventory.
-            is_move = TRUE;
-            accept = TRUE;
+            is_move = true;
+            accept = true;
         }
 
         // Don't allow placing an original item into Current Outfit or an outfit folder
@@ -5666,19 +5658,19 @@ BOOL LLFolderBridge::dragItemIntoFolder(LLInventoryItem* inv_item,
         // *TODO: Probably we should create a link to an item if it was dragged to outfit or COF.
         if (move_is_into_current_outfit || move_is_into_outfit)
         {
-            accept = FALSE;
+            accept = false;
         }
         // Don't allow to move a single item to Favorites or Landmarks
         // if it is not a landmark or a link to a landmark.
         else if ((move_is_into_favorites || move_is_into_landmarks)
                  && !can_move_to_landmarks(inv_item))
         {
-            accept = FALSE;
+            accept = false;
         }
         else if (move_is_into_marketplacelistings)
         {
             tooltip_msg = LLTrans::getString("TooltipOutboxNotInInventory");
-            accept = FALSE;
+            accept = false;
         }
 
         // Check whether the item being dragged from in world
@@ -5721,12 +5713,12 @@ BOOL LLFolderBridge::dragItemIntoFolder(LLInventoryItem* inv_item,
         if (move_is_into_marketplacelistings)
         {
             tooltip_msg = LLTrans::getString("TooltipOutboxNotInInventory");
-            accept = FALSE;
+            accept = false;
         }
         else if ((inv_item->getActualType() == LLAssetType::AT_SETTINGS) && !LLEnvironment::instance().isInventoryEnabled())
         {
             tooltip_msg = LLTrans::getString("NoEnvironmentSettings");
-            accept = FALSE;
+            accept = false;
         }
         else
         {
@@ -5755,12 +5747,12 @@ BOOL LLFolderBridge::dragItemIntoFolder(LLInventoryItem* inv_item,
         LLViewerInventoryItem* item = (LLViewerInventoryItem*)inv_item;
         if(item && item->isFinished())
         {
-            accept = TRUE;
+            accept = true;
 
             if (move_is_into_marketplacelistings)
             {
                 tooltip_msg = LLTrans::getString("TooltipOutboxNotInInventory");
-                accept = FALSE;
+                accept = false;
             }
             else if (move_is_into_current_outfit || move_is_into_outfit)
             {
@@ -5773,7 +5765,7 @@ BOOL LLFolderBridge::dragItemIntoFolder(LLInventoryItem* inv_item,
                 accept = can_move_to_landmarks(inv_item);
             }
 
-            LLInventoryPanel* active_panel = LLInventoryPanel::getActiveInventoryPanel(FALSE);
+            LLInventoryPanel* active_panel = LLInventoryPanel::getActiveInventoryPanel(false);
 
             // Check whether the item being dragged from the library
             // passes the filter of the destination panel.
@@ -5835,10 +5827,10 @@ bool check_category(LLInventoryModel* model,
 
     LLInventoryModel::cat_array_t descendent_categories;
     LLInventoryModel::item_array_t descendent_items;
-    model->collectDescendents(cat_id, descendent_categories, descendent_items, TRUE);
+    model->collectDescendents(cat_id, descendent_categories, descendent_items, true);
 
-    S32 num_descendent_categories = descendent_categories.size();
-    S32 num_descendent_items = descendent_items.size();
+    auto num_descendent_categories = descendent_categories.size();
+    auto num_descendent_items = descendent_items.size();
 
     if (num_descendent_categories + num_descendent_items == 0)
     {
@@ -5848,7 +5840,7 @@ bool check_category(LLInventoryModel* model,
         return check_item(cat_id, active_panel, filter);
     }
 
-    for (S32 i = 0; i < num_descendent_categories; ++i)
+    for (size_t i = 0; i < num_descendent_categories; ++i)
     {
         LLInventoryCategory* category = descendent_categories[i];
         if(!check_category(model, category->getUUID(), active_panel, filter))
@@ -5857,7 +5849,7 @@ bool check_category(LLInventoryModel* model,
         }
     }
 
-    for (S32 i = 0; i < num_descendent_items; ++i)
+    for (size_t i = 0; i < num_descendent_items; ++i)
     {
         LLViewerInventoryItem* item = descendent_items[i];
         if(!check_item(item->getUUID(), active_panel, filter))
@@ -6082,16 +6074,16 @@ LLLandmarkBridge::LLLandmarkBridge(LLInventoryPanel* inventory,
                                    U32 flags/* = 0x00*/) :
     LLItemBridge(inventory, root, uuid)
 {
-    mVisited = FALSE;
+    mVisited = false;
     if (flags & LLInventoryItemFlags::II_FLAGS_LANDMARK_VISITED)
     {
-        mVisited = TRUE;
+        mVisited = true;
     }
 }
 
 LLUIImagePtr LLLandmarkBridge::getIcon() const
 {
-    return LLInventoryIcon::getIcon(LLAssetType::AT_LANDMARK, LLInventoryType::IT_LANDMARK, mVisited, FALSE);
+    return LLInventoryIcon::getIcon(LLAssetType::AT_LANDMARK, LLInventoryType::IT_LANDMARK, mVisited, false);
 }
 
 void LLLandmarkBridge::buildContextMenu(LLMenuGL& menu, U32 flags)
@@ -6271,8 +6263,8 @@ void LLCallingCardBridge::checkSearchBySuffixChanges()
         // changes in mDisplayName are processed by rename function and here it will be always same
         // suffixes are also of fixed length, and we are processing change of one at a time,
         // so it should be safe to use length (note: mSearchableName is capitalized)
-        S32 old_length = mSearchableName.length();
-        S32 new_length = mDisplayName.length() + getLabelSuffix().length();
+        auto old_length = mSearchableName.length();
+        auto new_length = mDisplayName.length() + getLabelSuffix().length();
         if (old_length == new_length)
         {
             return;
@@ -6348,13 +6340,13 @@ void LLCallingCardBridge::performAction(LLInventoryModel* model, std::string act
 
 LLUIImagePtr LLCallingCardBridge::getIcon() const
 {
-    BOOL online = FALSE;
+    bool online = false;
     LLViewerInventoryItem* item = getItem();
     if(item)
     {
         online = LLAvatarTracker::instance().isBuddyOnline(item->getCreatorUUID());
     }
-    return LLInventoryIcon::getIcon(LLAssetType::AT_CALLINGCARD, LLInventoryType::IT_CALLINGCARD, online, FALSE);
+    return LLInventoryIcon::getIcon(LLAssetType::AT_CALLINGCARD, LLInventoryType::IT_CALLINGCARD, online, false);
 }
 
 std::string LLCallingCardBridge::getLabelSuffix() const
@@ -6420,10 +6412,10 @@ void LLCallingCardBridge::buildContextMenu(LLMenuGL& menu, U32 flags)
         getClipboardEntries(true, items, disabled_items, flags);
 
         LLInventoryItem* item = getItem();
-        BOOL good_card = (item
+        bool good_card = (item
                           && (LLUUID::null != item->getCreatorUUID())
                           && (item->getCreatorUUID() != gAgent.getID()));
-        BOOL user_online = FALSE;
+        bool user_online = false;
         if (item)
         {
             user_online = (LLAvatarTracker::instance().isBuddyOnline(item->getCreatorUUID()));
@@ -6449,13 +6441,13 @@ void LLCallingCardBridge::buildContextMenu(LLMenuGL& menu, U32 flags)
     hide_context_entries(menu, items, disabled_items);
 }
 
-BOOL LLCallingCardBridge::dragOrDrop(MASK mask, BOOL drop,
+bool LLCallingCardBridge::dragOrDrop(MASK mask, bool drop,
                                      EDragAndDropType cargo_type,
                                      void* cargo_data,
                                      std::string& tooltip_msg)
 {
     LLViewerInventoryItem* item = getItem();
-    BOOL rv = FALSE;
+    bool rv = false;
     if(item)
     {
         // check the type
@@ -6480,7 +6472,7 @@ BOOL LLCallingCardBridge::dragOrDrop(MASK mask, BOOL drop,
                 if(gInventory.getItem(inv_item->getUUID())
                    && perm.allowOperationBy(PERM_TRANSFER, gAgent.getID()))
                 {
-                    rv = TRUE;
+                    rv = true;
                     if(drop)
                     {
                         LLGiveInventory::doGiveInventoryItem(item->getCreatorUUID(),
@@ -6492,7 +6484,7 @@ BOOL LLCallingCardBridge::dragOrDrop(MASK mask, BOOL drop,
                     // It's not in the user's inventory (it's probably in
                     // an object's contents), so disallow dragging it here.
                     // You can't give something you don't yet have.
-                    rv = FALSE;
+                    rv = false;
                 }
                 break;
             }
@@ -6501,7 +6493,7 @@ BOOL LLCallingCardBridge::dragOrDrop(MASK mask, BOOL drop,
                 LLInventoryCategory* inv_cat = (LLInventoryCategory*)cargo_data;
                 if( gInventory.getCategory( inv_cat->getUUID() ) )
                 {
-                    rv = TRUE;
+                    rv = true;
                     if(drop)
                     {
                         LLGiveInventory::doGiveInventoryCategory(
@@ -6514,7 +6506,7 @@ BOOL LLCallingCardBridge::dragOrDrop(MASK mask, BOOL drop,
                     // It's not in the user's inventory (it's probably in
                     // an object's contents), so disallow dragging it here.
                     // You can't give something you don't yet have.
-                    rv = FALSE;
+                    rv = false;
                 }
                 break;
             }
@@ -6619,8 +6611,8 @@ void LLGestureBridge::performAction(LLInventoryModel* model, std::string action)
         if(!LLGestureMgr::instance().isGestureActive(mUUID))
         {
             // we need to inform server about gesture activating to be consistent with LLPreviewGesture and  LLGestureComboList.
-            BOOL inform_server = TRUE;
-            BOOL deactivate_similar = FALSE;
+            bool inform_server = true;
+            bool deactivate_similar = false;
             LLGestureMgr::instance().setGestureLoadedCallback(mUUID, boost::bind(&LLGestureBridge::playGesture, mUUID));
             LLViewerInventoryItem* item = gInventory.getItem(mUUID);
             llassert(item);
@@ -6650,19 +6642,19 @@ void LLGestureBridge::openItem()
   if (item)
   {
   LLPreviewGesture* preview = LLPreviewGesture::show(mUUID, LLUUID::null);
-  preview->setFocus(TRUE);
+  preview->setFocus(true);
   }
 */
 }
 
-BOOL LLGestureBridge::removeItem()
+bool LLGestureBridge::removeItem()
 {
     // Grab class information locally since *this may be deleted
     // within this function.  Not a great pattern...
     const LLInventoryModel* model = getInventoryModel();
     if(!model)
     {
-        return FALSE;
+        return false;
     }
     const LLUUID item_id = mUUID;
 
@@ -6673,7 +6665,7 @@ BOOL LLGestureBridge::removeItem()
     // If deactivateGesture deleted *this, then return out immediately.
     if (!model->getObject(item_id))
     {
-        return TRUE;
+        return true;
     }
 
     return LLItemBridge::removeItem();
@@ -6836,7 +6828,7 @@ LLObjectBridge::LLObjectBridge(LLInventoryPanel* inventory,
     LLItemBridge(inventory, root, uuid)
 {
     mAttachPt = (flags & 0xff); // low bye of inventory flags
-    mIsMultiObject = ( flags & LLInventoryItemFlags::II_FLAGS_OBJECT_HAS_MULTIPLE_ITEMS ) ?  TRUE: FALSE;
+    mIsMultiObject = is_flag_set(flags, LLInventoryItemFlags::II_FLAGS_OBJECT_HAS_MULTIPLE_ITEMS);
     mInvType = type;
 }
 
@@ -7018,7 +7010,7 @@ bool confirm_attachment_rez(const LLSD& notification, const LLSD& response)
             // attachments are batched up all into one message versus each attachment
             // being sent in its own separate attachments message.
             U8 attachment_pt = notification["payload"]["attachment_point"].asInteger();
-            BOOL is_add = notification["payload"]["is_add"].asBoolean();
+            bool is_add = notification["payload"]["is_add"].asBoolean();
 
             LL_DEBUGS("Avatar") << "ATT calling addAttachmentRequest " << (itemp ? itemp->getName() : "UNKNOWN") << " id " << item_id << LL_ENDL;
             LLAttachmentsMgr::instance().addAttachmentRequest(item_id, attachment_pt, is_add);
@@ -7096,8 +7088,8 @@ void LLObjectBridge::buildContextMenu(LLMenuGL& menu, U32 flags)
                     disabled_items.push_back(std::string("Attach To"));
                     disabled_items.push_back(std::string("Attach To HUD"));
                 }
-                LLMenuGL* attach_menu = menu.findChildMenuByName("Attach To", TRUE);
-                LLMenuGL* attach_hud_menu = menu.findChildMenuByName("Attach To HUD", TRUE);
+                LLMenuGL* attach_menu = menu.findChildMenuByName("Attach To", true);
+                LLMenuGL* attach_hud_menu = menu.findChildMenuByName("Attach To HUD", true);
                 if (attach_menu
                     && (attach_menu->getChildCount() == 0)
                     && attach_hud_menu
@@ -7138,20 +7130,20 @@ void LLObjectBridge::buildContextMenu(LLMenuGL& menu, U32 flags)
     hide_context_entries(menu, items, disabled_items);
 }
 
-BOOL LLObjectBridge::renameItem(const std::string& new_name)
+bool LLObjectBridge::renameItem(const std::string& new_name)
 {
     if(!isItemRenameable())
-        return FALSE;
+        return false;
     LLPreview::dirty(mUUID);
     LLInventoryModel* model = getInventoryModel();
     if(!model)
-        return FALSE;
+        return false;
     LLViewerInventoryItem* item = getItem();
     if(item && (item->getName() != new_name))
     {
         LLPointer<LLViewerInventoryItem> new_item = new LLViewerInventoryItem(item);
         new_item->rename(new_name);
-        new_item->updateServer(FALSE);
+        new_item->updateServer(false);
         model->updateItem(new_item);
         model->notifyObservers();
         buildDisplayName();
@@ -7162,15 +7154,15 @@ BOOL LLObjectBridge::renameItem(const std::string& new_name)
             if(obj)
             {
                 LLSelectMgr::getInstance()->deselectAll();
-                LLSelectMgr::getInstance()->addAsIndividual( obj, SELECT_ALL_TES, FALSE );
+                LLSelectMgr::getInstance()->addAsIndividual( obj, SELECT_ALL_TES, false );
                 LLSelectMgr::getInstance()->selectionSetObjectName( new_name );
                 LLSelectMgr::getInstance()->deselectAll();
             }
         }
     }
-    // return FALSE because we either notified observers (& therefore
+    // return false because we either notified observers (& therefore
     // rebuilt) or we didn't update.
-    return FALSE;
+    return false;
 }
 
 // +=================================================+
@@ -7204,7 +7196,7 @@ LLWearableBridge::LLWearableBridge(LLInventoryPanel* inventory,
     mInvType = inv_type;
 }
 
-BOOL LLWearableBridge::renameItem(const std::string& new_name)
+bool LLWearableBridge::renameItem(const std::string& new_name)
 {
     if (get_is_item_worn(mUUID))
     {
@@ -7228,7 +7220,7 @@ std::string LLWearableBridge::getLabelSuffix() const
 
 LLUIImagePtr LLWearableBridge::getIcon() const
 {
-    return LLInventoryIcon::getIcon(mAssetType, mInvType, mWearableType, FALSE);
+    return LLInventoryIcon::getIcon(mAssetType, mInvType, mWearableType, false);
 }
 
 // virtual
@@ -7278,7 +7270,7 @@ void LLWearableBridge::buildContextMenu(LLMenuGL& menu, U32 flags)
     }
     else
     {   // FWIW, it looks like SUPPRESS_OPEN_ITEM is not set anywhere
-        BOOL can_open = ((flags & SUPPRESS_OPEN_ITEM) != SUPPRESS_OPEN_ITEM);
+        bool can_open = ((flags & SUPPRESS_OPEN_ITEM) != SUPPRESS_OPEN_ITEM);
 
         // If we have clothing, don't add "Open" as it's the same action as "Wear"   SL-18976
         LLViewerInventoryItem* item = getItem();
@@ -7289,7 +7281,7 @@ void LLWearableBridge::buildContextMenu(LLMenuGL& menu, U32 flags)
         }
         if (isLinkedObjectMissing())
         {
-            can_open = FALSE;
+            can_open = false;
         }
         items.push_back(std::string("Share"));
         if (!canShare())
@@ -7367,14 +7359,14 @@ void LLWearableBridge::buildContextMenu(LLMenuGL& menu, U32 flags)
 
 // Called from menus
 // static
-BOOL LLWearableBridge::canWearOnAvatar(void* user_data)
+bool LLWearableBridge::canWearOnAvatar(void* user_data)
 {
     LLWearableBridge* self = (LLWearableBridge*)user_data;
-    if(!self) return FALSE;
+    if(!self) return false;
     if(!self->isAgentInventory())
     {
         LLViewerInventoryItem* item = (LLViewerInventoryItem*)self->getItem();
-        if(!item || !item->isFinished()) return FALSE;
+        if(!item || !item->isFinished()) return false;
     }
     return (!get_is_item_worn(self->mUUID));
 }
@@ -7463,10 +7455,10 @@ void LLWearableBridge::onWearAddOnAvatarArrived( LLViewerWearable* wearable, voi
 }
 
 // static
-BOOL LLWearableBridge::canEditOnAvatar(void* user_data)
+bool LLWearableBridge::canEditOnAvatar(void* user_data)
 {
     LLWearableBridge* self = (LLWearableBridge*)user_data;
-    if(!self) return FALSE;
+    if(!self) return false;
 
     return (get_is_item_worn(self->mUUID));
 }
@@ -7487,14 +7479,14 @@ void LLWearableBridge::editOnAvatar()
 }
 
 // static
-BOOL LLWearableBridge::canRemoveFromAvatar(void* user_data)
+bool LLWearableBridge::canRemoveFromAvatar(void* user_data)
 {
     LLWearableBridge* self = (LLWearableBridge*)user_data;
     if( self && (LLAssetType::AT_BODYPART != self->mAssetType) )
     {
         return get_is_item_worn( self->mUUID );
     }
-    return FALSE;
+    return false;
 }
 
 void LLWearableBridge::removeFromAvatar()
@@ -7552,7 +7544,7 @@ LLSettingsBridge::LLSettingsBridge(LLInventoryPanel* inventory,
 
 LLUIImagePtr LLSettingsBridge::getIcon() const
 {
-    return LLInventoryIcon::getIcon(LLAssetType::AT_SETTINGS, LLInventoryType::IT_SETTINGS, mSettingsType, FALSE);
+    return LLInventoryIcon::getIcon(LLAssetType::AT_SETTINGS, LLInventoryType::IT_SETTINGS, mSettingsType, false);
 }
 
 void LLSettingsBridge::performAction(LLInventoryModel* model, std::string action)
@@ -7658,20 +7650,20 @@ void LLSettingsBridge::buildContextMenu(LLMenuGL& menu, U32 flags)
     hide_context_entries(menu, items, disabled_items);
 }
 
-BOOL LLSettingsBridge::renameItem(const std::string& new_name)
+bool LLSettingsBridge::renameItem(const std::string& new_name)
 {
     /*TODO: change internal settings name? */
     return LLItemBridge::renameItem(new_name);
 }
 
-BOOL LLSettingsBridge::isItemRenameable() const
+bool LLSettingsBridge::isItemRenameable() const
 {
     LLViewerInventoryItem* item = getItem();
     if (item)
     {
         return (item->getPermissions().allowModifyBy(gAgent.getID()));
     }
-    return FALSE;
+    return false;
 }
 
 bool LLSettingsBridge::canUpdateParcel() const
@@ -7780,7 +7772,7 @@ void LLLinkFolderBridge::gotoItem()
         LLFolderViewItem *base_folder = LLInventoryPanel::getActiveInventoryPanel()->getItemByID(cat_uuid);
         if (base_folder)
         {
-            base_folder->setOpen(TRUE);
+            base_folder->setOpen(true);
         }
     }
 }
@@ -7967,7 +7959,7 @@ public:
         if (item)
         {
             LLPreviewGesture* preview = LLPreviewGesture::show(mUUID, LLUUID::null);
-            preview->setFocus(TRUE);
+            preview->setFocus(true);
         }
         LLInvFVBridgeAction::doIt();
     }
@@ -8050,24 +8042,24 @@ public:
     virtual ~LLWearableBridgeAction(){}
 protected:
     LLWearableBridgeAction(const LLUUID& id,LLInventoryModel* model) : LLInvFVBridgeAction(id,model) {}
-    BOOL isItemInTrash() const;
+    bool isItemInTrash() const;
     // return true if the item is in agent inventory. if false, it
     // must be lost or in the inventory library.
-    BOOL isAgentInventory() const;
+    bool isAgentInventory() const;
     void wearOnAvatar();
 };
 
-BOOL LLWearableBridgeAction::isItemInTrash() const
+bool LLWearableBridgeAction::isItemInTrash() const
 {
-    if(!mModel) return FALSE;
+    if(!mModel) return false;
     const LLUUID trash_id = mModel->findCategoryUUIDForType(LLFolderType::FT_TRASH);
     return mModel->isObjectDescendentOf(mUUID, trash_id);
 }
 
-BOOL LLWearableBridgeAction::isAgentInventory() const
+bool LLWearableBridgeAction::isAgentInventory() const
 {
-    if(!mModel) return FALSE;
-    if(gInventory.getRootFolderID() == mUUID) return TRUE;
+    if(!mModel) return false;
+    if(gInventory.getRootFolderID() == mUUID) return true;
     return mModel->isObjectDescendentOf(mUUID, gInventory.getRootFolderID());
 }
 
diff --git a/indra/newview/llinventorybridge.h b/indra/newview/llinventorybridge.h
index 70a457f98c..3e7f74384b 100644
--- a/indra/newview/llinventorybridge.h
+++ b/indra/newview/llinventorybridge.h
@@ -111,35 +111,35 @@ public:
     virtual void closeItem() {}
     virtual void navigateToFolder(bool new_window = false, bool change_mode = false);
     virtual void showProperties();
-    virtual BOOL isItemRenameable() const { return TRUE; }
-    virtual BOOL isMultiPreviewAllowed() { return TRUE; }
-    //virtual BOOL renameItem(const std::string& new_name) {}
-    virtual BOOL isItemRemovable(bool check_worn = true) const;
-    virtual BOOL isItemMovable() const;
-    virtual BOOL isItemInTrash() const;
+    virtual bool isItemRenameable() const { return true; }
+    virtual bool isMultiPreviewAllowed() { return true; }
+    //virtual bool renameItem(const std::string& new_name) {}
+    virtual bool isItemRemovable(bool check_worn = true) const;
+    virtual bool isItemMovable() const;
+    virtual bool isItemInTrash() const;
     virtual bool isItemInOutfits() const;
-    virtual BOOL isLink() const;
-    virtual BOOL isLibraryItem() const;
-    //virtual BOOL removeItem() = 0;
+    virtual bool isLink() const;
+    virtual bool isLibraryItem() const;
+    //virtual bool removeItem() = 0;
     virtual void removeBatch(std::vector<LLFolderViewModelItem*>& batch);
     virtual void move(LLFolderViewModelItem* new_parent_bridge) {}
     virtual bool isItemCopyable(bool can_copy_as_link = true) const { return false; }
-    virtual BOOL copyToClipboard() const;
-    virtual BOOL cutToClipboard();
+    virtual bool copyToClipboard() const;
+    virtual bool cutToClipboard();
     virtual bool isCutToClipboard();
-    virtual BOOL isClipboardPasteable() const;
-    virtual BOOL isClipboardPasteableAsLink() const;
+    virtual bool isClipboardPasteable() const;
+    virtual bool isClipboardPasteableAsLink() const;
     virtual void pasteFromClipboard() {}
     virtual void pasteLinkFromClipboard() {}
     void getClipboardEntries(bool show_asset_id, menuentry_vec_t &items,
                              menuentry_vec_t &disabled_items, U32 flags);
     virtual void buildContextMenu(LLMenuGL& menu, U32 flags);
     virtual LLToolDragAndDrop::ESource getDragSource() const;
-    virtual BOOL startDrag(EDragAndDropType* type, LLUUID* id) const;
-    virtual BOOL dragOrDrop(MASK mask, BOOL drop,
+    virtual bool startDrag(EDragAndDropType* type, LLUUID* id) const;
+    virtual bool dragOrDrop(MASK mask, bool drop,
                             EDragAndDropType cargo_type,
                             void* cargo_data,
-                            std::string& tooltip_msg) { return FALSE; }
+                            std::string& tooltip_msg) { return false; }
     virtual LLInventoryType::EType getInventoryType() const { return mInvType; }
     virtual LLWearableType::EType getWearableType() const { return LLWearableType::WT_NONE; }
     virtual LLSettingsType::type_e getSettingsType() const { return LLSettingsType::ST_NONE; }
@@ -171,28 +171,28 @@ protected:
     LLInventoryModel* getInventoryModel() const;
     LLInventoryFilter* getInventoryFilter() const;
 
-    BOOL isLinkedObjectInTrash() const; // Is this obj or its baseobj in the trash?
-    BOOL isLinkedObjectMissing() const; // Is this a linked obj whose baseobj is not in inventory?
+    bool isLinkedObjectInTrash() const; // Is this obj or its baseobj in the trash?
+    bool isLinkedObjectMissing() const; // Is this a linked obj whose baseobj is not in inventory?
 
-    BOOL isAgentInventory() const; // false if lost or in the inventory library
-    BOOL isCOFFolder() const;       // true if COF or descendant of
-    BOOL isInboxFolder() const;     // true if COF or descendant of   marketplace inbox
+    bool isAgentInventory() const; // false if lost or in the inventory library
+    bool isCOFFolder() const;       // true if COF or descendant of
+    bool isInboxFolder() const;     // true if COF or descendant of   marketplace inbox
 
-    BOOL isMarketplaceListingsFolder() const;     // true if descendant of Marketplace listings folder
+    bool isMarketplaceListingsFolder() const;     // true if descendant of Marketplace listings folder
 
-    virtual BOOL isItemPermissive() const;
+    virtual bool isItemPermissive() const;
     static void changeItemParent(LLInventoryModel* model,
                                  LLViewerInventoryItem* item,
                                  const LLUUID& new_parent,
-                                 BOOL restamp);
+                                 bool restamp);
     static void changeCategoryParent(LLInventoryModel* model,
                                      LLViewerInventoryCategory* item,
                                      const LLUUID& new_parent,
-                                     BOOL restamp);
+                                     bool restamp);
     void removeBatchNoCheck(std::vector<LLFolderViewModelItem*>& batch);
 
-    BOOL callback_cutToClipboard(const LLSD& notification, const LLSD& response);
-    BOOL perform_cutToClipboard();
+    bool callback_cutToClipboard(const LLSD& notification, const LLSD& response);
+    bool perform_cutToClipboard();
 
     LLHandle<LLInventoryPanel> mInventoryPanel;
     LLFolderView* mRoot;
@@ -249,20 +249,20 @@ public:
     virtual LLFontGL::StyleFlags getLabelStyle() const;
     virtual PermissionMask getPermissionMask() const;
     virtual time_t getCreationDate() const;
-    virtual BOOL isItemRenameable() const;
-    virtual BOOL renameItem(const std::string& new_name);
-    virtual BOOL removeItem();
+    virtual bool isItemRenameable() const;
+    virtual bool renameItem(const std::string& new_name);
+    virtual bool removeItem();
     virtual bool isItemCopyable(bool can_copy_as_link = true) const;
-    virtual bool hasChildren() const { return FALSE; }
-    virtual BOOL isUpToDate() const { return TRUE; }
+    virtual bool hasChildren() const { return false; }
+    virtual bool isUpToDate() const { return true; }
     virtual LLUIImagePtr getIconOverlay() const;
 
     LLViewerInventoryItem* getItem() const;
     virtual const LLUUID& getThumbnailUUID() const;
 
 protected:
-    BOOL confirmRemoveItem(const LLSD& notification, const LLSD& response);
-    virtual BOOL isItemPermissive() const;
+    bool confirmRemoveItem(const LLSD& notification, const LLSD& response);
+    virtual bool isItemPermissive() const;
     virtual void buildDisplayName() const;
     void doActionOnCurSelectedLandmark(LLLandmarkList::loaded_callback_t cb);
 
@@ -279,8 +279,8 @@ public:
 
     ~LLFolderBridge();
 
-    BOOL dragItemIntoFolder(LLInventoryItem* inv_item, BOOL drop, std::string& tooltip_msg, BOOL user_confirm = TRUE, LLPointer<LLInventoryCallback> cb = NULL);
-    BOOL dragCategoryIntoFolder(LLInventoryCategory* inv_category, BOOL drop, std::string& tooltip_msg, BOOL is_link = FALSE, BOOL user_confirm = TRUE, LLPointer<LLInventoryCallback> cb = NULL);
+    bool dragItemIntoFolder(LLInventoryItem* inv_item, bool drop, std::string& tooltip_msg, bool user_confirm = true, LLPointer<LLInventoryCallback> cb = NULL);
+    bool dragCategoryIntoFolder(LLInventoryCategory* inv_category, bool drop, std::string& tooltip_msg, bool is_link = false, bool user_confirm = true, LLPointer<LLInventoryCallback> cb = NULL);
     void callback_dropItemIntoFolder(const LLSD& notification, const LLSD& response, LLInventoryItem* inv_item);
     void callback_dropCategoryIntoFolder(const LLSD& notification, const LLSD& response, LLInventoryCategory* inv_category);
 
@@ -289,7 +289,7 @@ public:
     virtual void performAction(LLInventoryModel* model, std::string action);
     virtual void openItem();
     virtual void closeItem();
-    virtual BOOL isItemRenameable() const;
+    virtual bool isItemRenameable() const;
     virtual void selectItem();
     virtual void restoreItem();
 
@@ -304,10 +304,10 @@ public:
 
     void setShowDescendantsCount(bool show_count) {mShowDescendantsCount = show_count;}
 
-    virtual BOOL renameItem(const std::string& new_name);
+    virtual bool renameItem(const std::string& new_name);
 
-    virtual BOOL removeItem();
-    BOOL removeSystemFolder();
+    virtual bool removeItem();
+    bool removeSystemFolder();
     bool removeItemResponse(const LLSD& notification, const LLSD& response);
     void updateHierarchyCreationDate(time_t date);
 
@@ -315,17 +315,17 @@ public:
     virtual void pasteLinkFromClipboard();
     virtual void buildContextMenu(LLMenuGL& menu, U32 flags);
     virtual bool hasChildren() const;
-    virtual BOOL dragOrDrop(MASK mask, BOOL drop,
+    virtual bool dragOrDrop(MASK mask, bool drop,
                             EDragAndDropType cargo_type,
                             void* cargo_data,
                             std::string& tooltip_msg);
 
-    virtual BOOL isItemRemovable(bool check_worn = true) const;
-    virtual BOOL isItemMovable() const ;
-    virtual BOOL isUpToDate() const;
+    virtual bool isItemRemovable(bool check_worn = true) const;
+    virtual bool isItemMovable() const ;
+    virtual bool isUpToDate() const;
     virtual bool isItemCopyable(bool can_copy_as_link = true) const;
-    virtual BOOL isClipboardPasteable() const;
-    virtual BOOL isClipboardPasteableAsLink() const;
+    virtual bool isClipboardPasteable() const;
+    virtual bool isClipboardPasteableAsLink() const;
 
     EInventorySortGroup getSortGroup()  const;
     virtual void update();
@@ -360,14 +360,14 @@ protected:
     static void createNewHair(void* user_data);
     static void createNewEyes(void* user_data);
 
-    BOOL checkFolderForContentsOfType(LLInventoryModel* model, LLInventoryCollectFunctor& typeToCheck);
+    bool checkFolderForContentsOfType(LLInventoryModel* model, LLInventoryCollectFunctor& typeToCheck);
 
-    void modifyOutfit(BOOL append);
+    void modifyOutfit(bool append);
     void copyOutfitToClipboard();
     void determineFolderType();
 
     void dropToFavorites(LLInventoryItem* inv_item, LLPointer<LLInventoryCallback> cb = NULL);
-    void dropToOutfit(LLInventoryItem* inv_item, BOOL move_is_into_current_outfit, LLPointer<LLInventoryCallback> cb = NULL);
+    void dropToOutfit(LLInventoryItem* inv_item, bool move_is_into_current_outfit, LLPointer<LLInventoryCallback> cb = NULL);
     void dropToMyOutfits(LLInventoryCategory* inv_cat, LLPointer<LLInventoryCallback> cb = NULL);
 
     //--------------------------------------------------------------------
@@ -385,7 +385,7 @@ protected:
     void callback_pasteFromClipboard(const LLSD& notification, const LLSD& response);
     void perform_pasteFromClipboard();
     void gatherMessage(std::string& message, S32 depth, LLError::ELevel log_level);
-    LLUIImagePtr getFolderIcon(BOOL is_open) const;
+    LLUIImagePtr getFolderIcon(bool is_open) const;
 
     bool                            mCallingCards;
     bool                            mWearables;
@@ -467,7 +467,7 @@ public:
     virtual LLUIImagePtr getIcon() const;
     virtual void openItem();
 protected:
-    BOOL mVisited;
+    bool mVisited;
 };
 
 class LLCallingCardBridge : public LLItemBridge
@@ -483,7 +483,7 @@ public:
     virtual void performAction(LLInventoryModel* model, std::string action);
     virtual void openItem();
     virtual void buildContextMenu(LLMenuGL& menu, U32 flags);
-    virtual BOOL dragOrDrop(MASK mask, BOOL drop,
+    virtual bool dragOrDrop(MASK mask, bool drop,
                             EDragAndDropType cargo_type,
                             void* cargo_data,
                             std::string& tooltip_msg);
@@ -518,7 +518,7 @@ public:
     virtual std::string getLabelSuffix() const;
     virtual void performAction(LLInventoryModel* model, std::string action);
     virtual void openItem();
-    virtual BOOL removeItem();
+    virtual bool removeItem();
     virtual void buildContextMenu(LLMenuGL& menu, U32 flags);
     static void playGesture(const LLUUID& item_id);
 };
@@ -546,17 +546,17 @@ public:
     virtual LLUIImagePtr    getIcon() const;
     virtual void            performAction(LLInventoryModel* model, std::string action);
     virtual void            openItem();
-    virtual BOOL isItemWearable() const { return TRUE; }
+    virtual bool isItemWearable() const { return true; }
     virtual std::string getLabelSuffix() const;
     virtual void            buildContextMenu(LLMenuGL& menu, U32 flags);
-    virtual BOOL renameItem(const std::string& new_name);
+    virtual bool renameItem(const std::string& new_name);
     LLInventoryObject* getObject() const;
     LLViewerInventoryItem* getItem() const;
     LLViewerInventoryCategory* getCategory() const;
 protected:
     static LLUUID sContextMenuItemID;  // Only valid while the context menu is open.
     U32 mAttachPt;
-    BOOL mIsMultiObject;
+    bool mIsMultiObject;
 };
 
 class LLLSLTextBridge : public LLItemBridge
@@ -581,26 +581,25 @@ public:
     virtual LLUIImagePtr getIcon() const;
     virtual void    performAction(LLInventoryModel* model, std::string action);
     virtual void    openItem();
-    virtual BOOL isItemWearable() const { return TRUE; }
+    virtual bool isItemWearable() const { return true; }
     virtual void    buildContextMenu(LLMenuGL& menu, U32 flags);
     virtual std::string getLabelSuffix() const;
-    virtual BOOL renameItem(const std::string& new_name);
+    virtual bool renameItem(const std::string& new_name);
     virtual LLWearableType::EType getWearableType() const { return mWearableType; }
 
     static void     onWearOnAvatar( void* userdata );   // Access to wearOnAvatar() from menu
-    static BOOL     canWearOnAvatar( void* userdata );
+    static bool     canWearOnAvatar( void* userdata );
     static void     onWearOnAvatarArrived( LLViewerWearable* wearable, void* userdata );
     void            wearOnAvatar();
 
     static void     onWearAddOnAvatarArrived( LLViewerWearable* wearable, void* userdata );
     void            wearAddOnAvatar();
 
-    static BOOL     canEditOnAvatar( void* userdata );  // Access to editOnAvatar() from menu
+    static bool     canEditOnAvatar( void* userdata );  // Access to editOnAvatar() from menu
     static void     onEditOnAvatar( void* userdata );
     void            editOnAvatar();
 
-    static BOOL     canRemoveFromAvatar( void* userdata );
-    static void     removeAllClothesFromAvatar();
+    static bool     canRemoveFromAvatar( void* userdata );
     void            removeFromAvatar();
 protected:
     LLAssetType::EType mAssetType;
@@ -659,10 +658,10 @@ public:
     virtual LLUIImagePtr getIcon() const;
     virtual void    performAction(LLInventoryModel* model, std::string action);
     virtual void    openItem();
-    virtual BOOL    isMultiPreviewAllowed() { return FALSE; }
+    virtual bool    isMultiPreviewAllowed() { return false; }
     virtual void    buildContextMenu(LLMenuGL& menu, U32 flags);
-    virtual BOOL    renameItem(const std::string& new_name);
-    virtual BOOL    isItemRenameable() const;
+    virtual bool    renameItem(const std::string& new_name);
+    virtual bool    isItemRenameable() const;
     virtual LLSettingsType::type_e getSettingsType() const { return mSettingsType; }
 
 protected:
@@ -772,7 +771,7 @@ public:
     virtual LLFontGL::StyleFlags getLabelStyle() const;
 
 private:
-    LLUIImagePtr getMarketplaceFolderIcon(BOOL is_open) const;
+    LLUIImagePtr getMarketplaceFolderIcon(bool is_open) const;
     // Those members are mutable because they are cached variablse to speed up display, not a state variables
     mutable S32 m_depth;
     mutable S32 m_stockCountCache;
@@ -785,9 +784,9 @@ void rez_attachment(LLViewerInventoryItem* item,
 
 // Move items from an in-world object's "Contents" folder to a specified
 // folder in agent inventory.
-BOOL move_inv_category_world_to_agent(const LLUUID& object_id,
+bool move_inv_category_world_to_agent(const LLUUID& object_id,
                                       const LLUUID& category_id,
-                                      BOOL drop,
+                                      bool drop,
                                       std::function<void(S32, void*, const LLMoveInv *)> callback = NULL,
                                       void* user_data = NULL,
                                       LLInventoryFilter* filter = NULL);
diff --git a/indra/newview/llinventoryclipboard.cpp b/indra/newview/llinventoryclipboard.cpp
deleted file mode 100644
index d21e4da880..0000000000
--- a/indra/newview/llinventoryclipboard.cpp
+++ /dev/null
@@ -1,110 +0,0 @@
-/**
- * @file llinventoryclipboard.cpp
- * @brief LLInventoryClipboard class implementation
- *
- * $LicenseInfo:firstyear=2002&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "llviewerprecompiledheaders.h"
-
-#include "llinventoryclipboard.h"
-
-
-LLInventoryClipboard LLInventoryClipboard::sInstance;
-
-///----------------------------------------------------------------------------
-/// Local function declarations, constants, enums, and typedefs
-///----------------------------------------------------------------------------
-
-
-///----------------------------------------------------------------------------
-/// Class LLInventoryClipboard
-///----------------------------------------------------------------------------
-
-LLInventoryClipboard::LLInventoryClipboard()
-: mCutMode(false)
-{
-}
-
-LLInventoryClipboard::~LLInventoryClipboard()
-{
-    reset();
-}
-
-void LLInventoryClipboard::add(const LLUUID& object)
-{
-    mObjects.put(object);
-}
-
-// this stores a single inventory object
-void LLInventoryClipboard::store(const LLUUID& object)
-{
-    reset();
-    mObjects.put(object);
-}
-
-void LLInventoryClipboard::store(const LLDynamicArray<LLUUID>& inv_objects)
-{
-    reset();
-    S32 count = inv_objects.count();
-    for(S32 i = 0; i < count; i++)
-    {
-        mObjects.put(inv_objects[i]);
-    }
-}
-
-void LLInventoryClipboard::cut(const LLUUID& object)
-{
-    if(!mCutMode && !mObjects.empty())
-    {
-        //looks like there are some stored items, reset clipboard state
-        reset();
-    }
-    mCutMode = true;
-    add(object);
-}
-void LLInventoryClipboard::retrieve(LLDynamicArray<LLUUID>& inv_objects) const
-{
-    inv_objects.reset();
-    S32 count = mObjects.count();
-    for(S32 i = 0; i < count; i++)
-    {
-        inv_objects.put(mObjects[i]);
-    }
-}
-
-void LLInventoryClipboard::reset()
-{
-    mObjects.reset();
-    mCutMode = false;
-}
-
-// returns true if the clipboard has something pasteable in it.
-BOOL LLInventoryClipboard::hasContents() const
-{
-    return (mObjects.count() > 0);
-}
-
-
-///----------------------------------------------------------------------------
-/// Local function definitions
-///----------------------------------------------------------------------------
diff --git a/indra/newview/llinventoryclipboard.h b/indra/newview/llinventoryclipboard.h
deleted file mode 100644
index 487325d070..0000000000
--- a/indra/newview/llinventoryclipboard.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/**
- * @file llinventoryclipboard.h
- * @brief LLInventoryClipboard class header file
- *
- * $LicenseInfo:firstyear=2002&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLINVENTORYCLIPBOARD_H
-#define LL_LLINVENTORYCLIPBOARD_H
-
-#include "lldarray.h"
-#include "lluuid.h"
-
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-// Class LLInventoryClipboard
-//
-// This class is used to cut/copy/paste inventory items around the
-// world. This class is accessed through a singleton (only one
-// inventory clipboard for now) which can be referenced using the
-// instance() method.
-//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-class LLInventoryClipboard
-{
-public:
-    // calling this before main() is undefined
-    static LLInventoryClipboard& instance() { return sInstance; }
-
-    // this method adds to the current list.
-    void add(const LLUUID& object);
-
-    // this stores a single inventory object
-    void store(const LLUUID& object);
-
-    // this method stores an array of objects
-    void store(const LLDynamicArray<LLUUID>& inventory_objects);
-
-    void cut(const LLUUID& object);
-    // this method gets the objects in the clipboard by copying them
-    // into the array provided.
-    void retrieve(LLDynamicArray<LLUUID>& inventory_objects) const;
-
-    // this method empties out the clipboard
-    void reset();
-
-    // returns true if the clipboard has something pasteable in it.
-    BOOL hasContents() const;
-    bool isCutMode() const { return mCutMode; }
-
-protected:
-    static LLInventoryClipboard sInstance;
-
-    LLDynamicArray<LLUUID> mObjects;
-    bool mCutMode;
-
-public:
-    // please don't actually call these
-    LLInventoryClipboard();
-    ~LLInventoryClipboard();
-private:
-    // please don't implement these
-    LLInventoryClipboard(const LLInventoryClipboard&);
-    LLInventoryClipboard& operator=(const LLInventoryClipboard&);
-};
-
-
-#endif // LL_LLINVENTORYCLIPBOARD_H
diff --git a/indra/newview/llinventoryfilter.cpp b/indra/newview/llinventoryfilter.cpp
index b9ce90ff7b..114ccfdd3f 100644
--- a/indra/newview/llinventoryfilter.cpp
+++ b/indra/newview/llinventoryfilter.cpp
@@ -96,7 +96,7 @@ bool LLInventoryFilter::check(const LLFolderViewModelItem* item)
     const LLFolderViewModelItemInventory* listener = dynamic_cast<const LLFolderViewModelItemInventory*>(item);
 
     // If it's a folder and we're showing all folders, return automatically.
-    const BOOL is_folder = listener->getInventoryType() == LLInventoryType::IT_CATEGORY;
+    const bool is_folder = listener->getInventoryType() == LLInventoryType::IT_CATEGORY;
     if (is_folder && (mFilterOps.mShowFolderState == LLInventoryFilter::SHOW_ALL_FOLDERS))
     {
         return true;
@@ -297,7 +297,7 @@ bool LLInventoryFilter::checkFolder(const LLUUID& folder_id) const
 
 bool LLInventoryFilter::checkAgainstFilterType(const LLFolderViewModelItemInventory* listener) const
 {
-    if (!listener) return FALSE;
+    if (!listener) return false;
 
     LLInventoryType::EType object_type = listener->getInventoryType();
     const LLUUID object_id = listener->getUUID();
@@ -316,7 +316,7 @@ bool LLInventoryFilter::checkAgainstFilterType(const LLFolderViewModelItemInvent
             // If it has no type, pass it, unless it's a link.
             if (object && object->getIsLinkType())
             {
-                return FALSE;
+                return false;
             }
             break;
         case LLInventoryType::IT_UNKNOWN:
@@ -325,14 +325,14 @@ bool LLInventoryFilter::checkAgainstFilterType(const LLFolderViewModelItemInvent
                 // Unknows are 255 and won't fit in 64 bits.
                 if (mFilterOps.mFilterObjectTypes != 0xffffffffffffffffULL)
                 {
-                    return FALSE;
+                    return false;
                 }
                 break;
             }
         default:
             if ((1LL << object_type & mFilterOps.mFilterObjectTypes) == U64(0))
             {
-                return FALSE;
+                return false;
             }
             break;
         }
@@ -342,7 +342,7 @@ bool LLInventoryFilter::checkAgainstFilterType(const LLFolderViewModelItemInvent
     {
         if (!get_is_item_worn(object_id))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -351,10 +351,10 @@ bool LLInventoryFilter::checkAgainstFilterType(const LLFolderViewModelItemInvent
     // Pass if this item is the target UUID or if it links to the target UUID
     if (filterTypes & FILTERTYPE_UUID)
     {
-        if (!object) return FALSE;
+        if (!object) return false;
 
         if (object->getLinkedUUID() != mFilterOps.mFilterUUID)
-            return FALSE;
+            return false;
     }
 
     ////////////////////////////////////////////////////////////////////////////////
@@ -378,13 +378,13 @@ bool LLInventoryFilter::checkAgainstFilterType(const LLFolderViewModelItemInvent
         {
             if (listener->getCreationDate() < earliest ||
                 listener->getCreationDate() > mFilterOps.mMaxDate)
-                return FALSE;
+                return false;
         }
         else
         {
             if (listener->getCreationDate() > earliest ||
                 listener->getCreationDate() > mFilterOps.mMaxDate)
-                return FALSE;
+                return false;
         }
     }
 
@@ -397,7 +397,7 @@ bool LLInventoryFilter::checkAgainstFilterType(const LLFolderViewModelItemInvent
         if ((object_type == LLInventoryType::IT_WEARABLE) &&
                 (((0x1LL << type) & mFilterOps.mFilterWearableTypes) == 0))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -410,7 +410,7 @@ bool LLInventoryFilter::checkAgainstFilterType(const LLFolderViewModelItemInvent
         if ((object_type == LLInventoryType::IT_SETTINGS) &&
             (((0x1LL << type) & mFilterOps.mFilterSettingsTypes) == 0))
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -434,20 +434,20 @@ bool LLInventoryFilter::checkAgainstFilterType(const LLFolderViewModelItemInvent
                 LLInventoryModel::cat_array_t* cat_array = NULL;
                 LLInventoryModel::item_array_t* item_array = NULL;
                 gInventory.getDirectDescendentsOf(object_id,cat_array,item_array);
-                S32 descendents_actual = 0;
+                size_t descendents_actual = 0;
                 if(cat_array && item_array)
                 {
                     descendents_actual = cat_array->size() + item_array->size();
                 }
                 if (descendents_actual == 0)
                 {
-                    return FALSE;
+                    return false;
                 }
             }
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 bool LLInventoryFilter::checkAgainstFilterType(const LLInventoryItem* item) const
@@ -467,7 +467,7 @@ bool LLInventoryFilter::checkAgainstFilterType(const LLInventoryItem* item) cons
             // If it has no type, pass it, unless it's a link.
             if (item && item->getIsLinkType())
             {
-                return FALSE;
+                return false;
             }
             break;
         case LLInventoryType::IT_UNKNOWN:
@@ -476,14 +476,14 @@ bool LLInventoryFilter::checkAgainstFilterType(const LLInventoryItem* item) cons
                 // Unknows are 255 and won't fit in 64 bits.
                 if (mFilterOps.mFilterObjectTypes != 0xffffffffffffffffULL)
                 {
-                    return FALSE;
+                    return false;
                 }
                 break;
             }
         default:
             if ((1LL << object_type & mFilterOps.mFilterObjectTypes) == U64(0))
             {
-                return FALSE;
+                return false;
             }
             break;
         }
@@ -540,7 +540,7 @@ bool LLInventoryFilter::checkAgainstClipboard(const LLUUID& object_id) const
 
 bool LLInventoryFilter::checkAgainstPermissions(const LLFolderViewModelItemInventory* listener) const
 {
-    if (!listener) return FALSE;
+    if (!listener) return false;
 
     PermissionMask perm = listener->getPermissionMask();
     const LLInvFVBridge *bridge = dynamic_cast<const LLInvFVBridge *>(listener);
@@ -567,18 +567,18 @@ bool LLInventoryFilter::checkAgainstPermissions(const LLInventoryItem* item) con
 
 bool LLInventoryFilter::checkAgainstFilterLinks(const LLFolderViewModelItemInventory* listener) const
 {
-    if (!listener) return TRUE;
+    if (!listener) return true;
 
     const LLUUID object_id = listener->getUUID();
     const LLInventoryObject *object = gInventory.getObject(object_id);
-    if (!object) return TRUE;
+    if (!object) return true;
 
-    const BOOL is_link = object->getIsLinkType();
+    const bool is_link = object->getIsLinkType();
     if (is_link && (mFilterOps.mFilterLinks == FILTERLINK_EXCLUDE_LINKS))
-        return FALSE;
+        return false;
     if (!is_link && (mFilterOps.mFilterLinks == FILTERLINK_ONLY_LINKS))
-        return FALSE;
-    return TRUE;
+        return false;
+    return true;
 }
 
 bool LLInventoryFilter::checkAgainstFilterThumbnails(const LLUUID& object_id) const
@@ -596,47 +596,47 @@ bool LLInventoryFilter::checkAgainstFilterThumbnails(const LLUUID& object_id) co
 
 bool LLInventoryFilter::checkAgainstCreator(const LLFolderViewModelItemInventory* listener) const
 {
-    if (!listener) return TRUE;
-    const BOOL is_folder = listener->getInventoryType() == LLInventoryType::IT_CATEGORY;
+    if (!listener) return true;
+    const bool is_folder = listener->getInventoryType() == LLInventoryType::IT_CATEGORY;
     switch (mFilterOps.mFilterCreatorType)
     {
         case FILTERCREATOR_SELF:
-            if(is_folder) return FALSE;
+            if(is_folder) return false;
             return (listener->getSearchableCreatorName() == mUsername);
         case FILTERCREATOR_OTHERS:
-            if(is_folder) return FALSE;
+            if(is_folder) return false;
             return (listener->getSearchableCreatorName() != mUsername);
         case FILTERCREATOR_ALL:
         default:
-            return TRUE;
+            return true;
     }
 }
 
 bool LLInventoryFilter::checkAgainstSearchVisibility(const LLFolderViewModelItemInventory* listener) const
 {
-    if (!listener || !hasFilterString()) return TRUE;
+    if (!listener || !hasFilterString()) return true;
 
     const LLUUID object_id = listener->getUUID();
     const LLInventoryObject *object = gInventory.getObject(object_id);
-    if (!object) return TRUE;
+    if (!object) return true;
 
-    const BOOL is_link = object->getIsLinkType();
+    const bool is_link = object->getIsLinkType();
     if (is_link && ((mFilterOps.mSearchVisibility & VISIBILITY_LINKS) == 0))
-        return FALSE;
+        return false;
 
     if (listener->isItemInOutfits() && ((mFilterOps.mSearchVisibility & VISIBILITY_OUTFITS) == 0))
-        return FALSE;
+        return false;
 
     if (listener->isItemInTrash() && ((mFilterOps.mSearchVisibility & VISIBILITY_TRASH) == 0))
-        return FALSE;
+        return false;
 
     if (!listener->isAgentInventory() && ((mFilterOps.mSearchVisibility & VISIBILITY_LIBRARY) == 0))
-        return FALSE;
+        return false;
 
-    return TRUE;
+    return true;
 }
 
-const std::string& LLInventoryFilter::getFilterSubString(BOOL trim) const
+const std::string& LLInventoryFilter::getFilterSubString(bool trim) const
 {
     return mFilterSubString;
 }
@@ -964,11 +964,11 @@ void LLInventoryFilter::setFilterSubString(const std::string& string)
         }
 
         // hitting BACKSPACE, for example
-        const BOOL less_restrictive = mFilterSubString.size() >= filter_sub_string_new.size()
+        const bool less_restrictive = mFilterSubString.size() >= filter_sub_string_new.size()
             && !mFilterSubString.substr(0, filter_sub_string_new.size()).compare(filter_sub_string_new);
 
         // appending new characters
-        const BOOL more_restrictive = mFilterSubString.size() < filter_sub_string_new.size()
+        const bool more_restrictive = mFilterSubString.size() < filter_sub_string_new.size()
             && !filter_sub_string_new.substr(0, mFilterSubString.size()).compare(mFilterSubString);
 
         mFilterSubString = filter_sub_string_new;
@@ -1019,8 +1019,8 @@ void LLInventoryFilter::setSearchVisibilityTypes(U32 types)
     if (mFilterOps.mSearchVisibility != types)
     {
         // keep current items only if no perm bits getting turned off
-        BOOL fewer_bits_set = (mFilterOps.mSearchVisibility & ~types);
-        BOOL more_bits_set = (~mFilterOps.mSearchVisibility & types);
+        bool fewer_bits_set = (mFilterOps.mSearchVisibility & ~types);
+        bool more_bits_set = (~mFilterOps.mSearchVisibility & types);
         mFilterOps.mSearchVisibility = types;
 
         if (more_bits_set && fewer_bits_set)
@@ -1057,8 +1057,8 @@ void LLInventoryFilter::setFilterPermissions(PermissionMask perms)
     if (mFilterOps.mPermissions != perms)
     {
         // keep current items only if no perm bits getting turned off
-        BOOL fewer_bits_set = (mFilterOps.mPermissions & ~perms);
-        BOOL more_bits_set = (~mFilterOps.mPermissions & perms);
+        bool fewer_bits_set = (mFilterOps.mPermissions & ~perms);
+        bool more_bits_set = (~mFilterOps.mPermissions & perms);
         mFilterOps.mPermissions = perms;
 
         if (more_bits_set && fewer_bits_set)
@@ -1101,7 +1101,7 @@ void LLInventoryFilter::setDateRange(time_t min_date, time_t max_date)
     }
 }
 
-void LLInventoryFilter::setDateRangeLastLogoff(BOOL sl)
+void LLInventoryFilter::setDateRangeLastLogoff(bool sl)
 {
     static LLCachedControl<U32> s_last_logoff(gSavedPerAccountSettings, "LastLogoff", 0);
     if (sl && !isSinceLogoff())
@@ -1150,8 +1150,8 @@ void LLInventoryFilter::setHoursAgo(U32 hours)
         bool is_increasing_from_zero = is_increasing && !mFilterOps.mHoursAgo && !isSinceLogoff();
 
         // *NOTE: need to cache last filter time, in case filter goes stale
-        BOOL less_restrictive;
-        BOOL more_restrictive;
+        bool less_restrictive;
+        bool more_restrictive;
         if (FILTERDATEDIRECTION_NEWER == mFilterOps.mDateSearchDirection)
         {
             less_restrictive = ((are_date_limits_valid && ((is_increasing && mFilterOps.mHoursAgo))) || !hours);
@@ -1314,8 +1314,8 @@ const std::string& LLInventoryFilter::getFilterText()
 
     std::string filtered_types;
     std::string not_filtered_types;
-    BOOL filtered_by_type = FALSE;
-    BOOL filtered_by_all_types = TRUE;
+    bool filtered_by_type = false;
+    bool filtered_by_all_types = true;
     S32 num_filter_types = 0;
 
     mFilterText.clear();
@@ -1323,158 +1323,158 @@ const std::string& LLInventoryFilter::getFilterText()
     if (isFilterObjectTypesWith(LLInventoryType::IT_ANIMATION))
     {
         filtered_types += LLTrans::getString("Animations");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types += LLTrans::getString("Animations");
 
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_CALLINGCARD))
     {
         filtered_types += LLTrans::getString("Calling Cards");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types += LLTrans::getString("Calling Cards");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_WEARABLE))
     {
         filtered_types +=  LLTrans::getString("Clothing");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types +=  LLTrans::getString("Clothing");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_GESTURE))
     {
         filtered_types +=  LLTrans::getString("Gestures");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types +=  LLTrans::getString("Gestures");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_LANDMARK))
     {
         filtered_types +=  LLTrans::getString("Landmarks");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types +=  LLTrans::getString("Landmarks");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_MATERIAL))
     {
         filtered_types +=  LLTrans::getString("Materials");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types +=  LLTrans::getString("Materials");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_NOTECARD))
     {
         filtered_types +=  LLTrans::getString("Notecards");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types +=  LLTrans::getString("Notecards");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_OBJECT) && isFilterObjectTypesWith(LLInventoryType::IT_ATTACHMENT))
     {
         filtered_types +=  LLTrans::getString("Objects");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types +=  LLTrans::getString("Objects");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_LSL))
     {
         filtered_types +=  LLTrans::getString("Scripts");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types +=  LLTrans::getString("Scripts");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_SOUND))
     {
         filtered_types +=  LLTrans::getString("Sounds");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types +=  LLTrans::getString("Sounds");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_TEXTURE))
     {
         filtered_types +=  LLTrans::getString("Textures");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types +=  LLTrans::getString("Textures");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_SNAPSHOT))
     {
         filtered_types +=  LLTrans::getString("Snapshots");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types +=  LLTrans::getString("Snapshots");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (isFilterObjectTypesWith(LLInventoryType::IT_SETTINGS))
     {
         filtered_types +=  LLTrans::getString("Settings");
-        filtered_by_type = TRUE;
+        filtered_by_type = true;
         num_filter_types++;
     }
     else
     {
         not_filtered_types +=  LLTrans::getString("Settings");
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!LLInventoryModelBackgroundFetch::instance().folderFetchActive()
diff --git a/indra/newview/llinventoryfilter.h b/indra/newview/llinventoryfilter.h
index e45375deca..7203c6f743 100644
--- a/indra/newview/llinventoryfilter.h
+++ b/indra/newview/llinventoryfilter.h
@@ -247,7 +247,7 @@ public:
     void                setSearchVisibilityTypes(const Params& params);
 
     void                setFilterSubString(const std::string& string);
-    const std::string&  getFilterSubString(BOOL trim = FALSE) const;
+    const std::string&  getFilterSubString(bool trim = false) const;
     const std::string&  getFilterSubStringOrig() const { return mFilterSubStringOrig; }
     bool                hasFilterString() const;
 
@@ -257,7 +257,7 @@ public:
     PermissionMask      getFilterPermissions() const;
 
     void                setDateRange(time_t min_date, time_t max_date);
-    void                setDateRangeLastLogoff(BOOL sl);
+    void                setDateRangeLastLogoff(bool sl);
     time_t              getMinDate() const;
     time_t              getMaxDate() const;
 
diff --git a/indra/newview/llinventoryfunctions.cpp b/indra/newview/llinventoryfunctions.cpp
index 016b0880eb..8471b2cea1 100644
--- a/indra/newview/llinventoryfunctions.cpp
+++ b/indra/newview/llinventoryfunctions.cpp
@@ -91,7 +91,7 @@
 #include "llvoavatarself.h"
 #include "llwearablelist.h"
 
-BOOL LLInventoryState::sWearNewClothing = FALSE;
+bool LLInventoryState::sWearNewClothing = false;
 LLUUID LLInventoryState::sWearNewClothingTransactionID;
 std::list<LLUUID> LLInventoryAction::sMarketplaceFolders;
 bool LLInventoryAction::sDeleteConfirmationDisplayed = false;
@@ -156,7 +156,7 @@ S32 count_descendants_items(const LLUUID& cat_id)
     LLInventoryModel::item_array_t* item_array;
     gInventory.getDirectDescendentsOf(cat_id,cat_array,item_array);
 
-    S32 count = item_array->size();
+    S32 count = static_cast<S32>(item_array->size());
 
     LLInventoryModel::cat_array_t cat_array_copy = *cat_array;
     for (LLInventoryModel::cat_array_t::iterator iter = cat_array_copy.begin(); iter != cat_array_copy.end(); iter++)
@@ -553,12 +553,12 @@ public:
     }
 };
 
-BOOL get_is_parent_to_worn_item(const LLUUID& id)
+bool get_is_parent_to_worn_item(const LLUUID& id)
 {
     const LLViewerInventoryCategory* cat = gInventory.getCategory(id);
     if (!cat)
     {
-        return FALSE;
+        return false;
     }
 
     LLInventoryModel::cat_array_t cats;
@@ -585,7 +585,7 @@ BOOL get_is_parent_to_worn_item(const LLUUID& id)
 
                 if (cat == parent_cat)
                 {
-                    return TRUE;
+                    return true;
                 }
 
                 parent_id = parent_cat->getParentUUID();
@@ -593,23 +593,23 @@ BOOL get_is_parent_to_worn_item(const LLUUID& id)
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL get_is_item_worn(const LLUUID& id, const LLViewerInventoryItem* item)
+bool get_is_item_worn(const LLUUID& id, const LLViewerInventoryItem* item)
 {
     if (!item)
-        return FALSE;
+        return false;
 
     if (item->getIsLinkType() && !gInventory.getItem(item->getLinkedUUID()))
     {
-        return FALSE;
+        return false;
     }
 
     // Consider the item as worn if it has links in COF.
     if (LLAppearanceMgr::instance().isLinkedInCOF(id))
     {
-        return TRUE;
+        return true;
     }
 
     switch(item->getType())
@@ -617,55 +617,55 @@ BOOL get_is_item_worn(const LLUUID& id, const LLViewerInventoryItem* item)
         case LLAssetType::AT_OBJECT:
         {
             if (isAgentAvatarValid() && gAgentAvatarp->isWearingAttachment(item->getLinkedUUID()))
-                return TRUE;
+                return true;
             break;
         }
         case LLAssetType::AT_BODYPART:
         case LLAssetType::AT_CLOTHING:
             if(gAgentWearables.isWearingItem(item->getLinkedUUID()))
-                return TRUE;
+                return true;
             break;
         case LLAssetType::AT_GESTURE:
             if (LLGestureMgr::instance().isGestureActive(item->getLinkedUUID()))
-                return TRUE;
+                return true;
             break;
         default:
             break;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL get_is_item_worn(const LLUUID& id)
+bool get_is_item_worn(const LLUUID& id)
 {
     const LLViewerInventoryItem* item = gInventory.getItem(id);
     return get_is_item_worn(id, item);
 }
 
-BOOL get_is_item_worn(const LLViewerInventoryItem* item)
+bool get_is_item_worn(const LLViewerInventoryItem* item)
 {
     if (!item)
     {
-        return FALSE;
+        return false;
     }
     return get_is_item_worn(item->getUUID(), item);
 }
 
-BOOL get_can_item_be_worn(const LLUUID& id)
+bool get_can_item_be_worn(const LLUUID& id)
 {
     const LLViewerInventoryItem* item = gInventory.getItem(id);
     if (!item)
-        return FALSE;
+        return false;
 
     if (LLAppearanceMgr::instance().isLinkedInCOF(item->getLinkedUUID()))
     {
         // an item having links in COF (i.e. a worn item)
-        return FALSE;
+        return false;
     }
 
     if (gInventory.isObjectDescendentOf(id, LLAppearanceMgr::instance().getCOF()))
     {
         // a non-link object in COF (should not normally happen)
-        return FALSE;
+        return false;
     }
 
     const LLUUID trash_id = gInventory.findCategoryUUIDForType(
@@ -685,12 +685,12 @@ BOOL get_can_item_be_worn(const LLUUID& id)
             if (isAgentAvatarValid() && gAgentAvatarp->isWearingAttachment(item->getLinkedUUID()))
             {
                 // Already being worn
-                return FALSE;
+                return false;
             }
             else
             {
                 // Not being worn yet.
-                return TRUE;
+                return true;
             }
             break;
         }
@@ -699,18 +699,18 @@ BOOL get_can_item_be_worn(const LLUUID& id)
             if(gAgentWearables.isWearingItem(item->getLinkedUUID()))
             {
                 // Already being worn
-                return FALSE;
+                return false;
             }
             else
             {
                 // Not being worn yet.
-                return TRUE;
+                return true;
             }
             break;
         default:
             break;
     }
-    return FALSE;
+    return false;
 }
 
 bool get_is_item_removable(const LLInventoryModel* model, const LLUUID& id, bool check_worn)
@@ -792,7 +792,7 @@ void handle_item_edit(const LLUUID& inv_item_id)
     }
 }
 
-BOOL get_is_category_removable(const LLInventoryModel* model, const LLUUID& id)
+bool get_is_category_removable(const LLInventoryModel* model, const LLUUID& id)
 {
     // NOTE: This function doesn't check the folder's children.
     // See LLFolderBridge::isItemRemovable for a function that does
@@ -800,27 +800,27 @@ BOOL get_is_category_removable(const LLInventoryModel* model, const LLUUID& id)
 
     if (!model)
     {
-        return FALSE;
+        return false;
     }
 
     if (!model->isObjectDescendentOf(id, gInventory.getRootFolderID()))
     {
-        return FALSE;
+        return false;
     }
 
-    if (!isAgentAvatarValid()) return FALSE;
+    if (!isAgentAvatarValid()) return false;
 
     const LLInventoryCategory* category = model->getCategory(id);
     if (!category)
     {
-        return FALSE;
+        return false;
     }
 
     const LLFolderType::EType folder_type = category->getPreferredType();
 
     if (LLFolderType::lookupIsProtectedType(folder_type))
     {
-        return FALSE;
+        return false;
     }
 
     // Can't delete the outfit that is currently being worn.
@@ -829,11 +829,11 @@ BOOL get_is_category_removable(const LLInventoryModel* model, const LLUUID& id)
         const LLViewerInventoryItem *base_outfit_link = LLAppearanceMgr::instance().getBaseOutfitLink();
         if (base_outfit_link && (category == base_outfit_link->getLinkedCategory()))
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 bool get_is_category_and_children_removable(LLInventoryModel* model, const LLUUID& folder_id, bool check_worn)
@@ -898,11 +898,11 @@ bool get_is_category_and_children_removable(LLInventoryModel* model, const LLUUI
     return true;
 }
 
-BOOL get_is_category_renameable(const LLInventoryModel* model, const LLUUID& id)
+bool get_is_category_renameable(const LLInventoryModel* model, const LLUUID& id)
 {
     if (!model)
     {
-        return FALSE;
+        return false;
     }
 
     LLViewerInventoryCategory* cat = model->getCategory(id);
@@ -910,9 +910,9 @@ BOOL get_is_category_renameable(const LLInventoryModel* model, const LLUUID& id)
     if (cat && !LLFolderType::lookupIsProtectedType(cat->getPreferredType()) &&
         cat->getOwnerID() == gAgent.getID())
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 void show_task_item_profile(const LLUUID& item_uuid, const LLUUID& object_id)
@@ -1098,7 +1098,7 @@ S32 compute_stock_count(LLUUID cat_uuid, bool force_count /* false */)
         LLInventoryModel::cat_array_t* cat_array;
         LLInventoryModel::item_array_t* item_array;
         gInventory.getDirectDescendentsOf(cat_uuid,cat_array,item_array);
-        return item_array->size();
+        return static_cast<S32>(item_array->size());
     }
 
     // When force_count is true, we do not do any verification of the marketplace status and simply compute
@@ -1327,12 +1327,12 @@ bool can_move_item_to_marketplace(const LLInventoryCategory* root_folder, LLInve
     if (accept)
     {
         // If the dest folder is a stock folder, we do not count the incoming items toward the total (stock items are seen as one)
-        int existing_item_count = (move_in_stock ? 0 : bundle_size);
+        unsigned int existing_item_count = (move_in_stock ? 0 : bundle_size);
 
         // If the dest folder is a stock folder, we do assume that the incoming items are also stock items (they should anyway)
-        int existing_stock_count = (move_in_stock ? bundle_size : 0);
+        unsigned int existing_stock_count = (move_in_stock ? bundle_size : 0);
 
-        int existing_folder_count = 0;
+        unsigned int existing_folder_count = 0;
 
         // Get the version folder: that's where the counts start from
         const LLViewerInventoryCategory * version_folder = ((root_folder && (root_folder != dest_folder)) ? gInventory.getFirstDescendantOf(root_folder->getUUID(), dest_folder->getUUID()) : NULL);
@@ -1348,11 +1348,11 @@ bool can_move_item_to_marketplace(const LLInventoryCategory* root_folder, LLInve
             LLInventoryModel::cat_array_t existing_categories;
             LLInventoryModel::item_array_t existing_items;
 
-            gInventory.collectDescendents(version_folder->getUUID(), existing_categories, existing_items, FALSE);
+            gInventory.collectDescendents(version_folder->getUUID(), existing_categories, existing_items, false);
 
             existing_item_count += count_copyable_items(existing_items) + count_stock_folders(existing_categories);
             existing_stock_count += count_stock_items(existing_items);
-            existing_folder_count += existing_categories.size();
+            existing_folder_count += static_cast<S32>(existing_categories.size());
 
             // If the incoming item is a nocopy (stock) item, we need to consider that it will create a stock folder
             if (!inv_item->getPermissions().allowOperationBy(PERM_COPY, gAgent.getID(), gAgent.getGroupID()) && !move_in_stock)
@@ -1422,9 +1422,9 @@ bool can_move_folder_to_marketplace(const LLInventoryCategory* root_folder, LLIn
     {
         LLInventoryModel::cat_array_t descendent_categories;
         LLInventoryModel::item_array_t descendent_items;
-        gInventory.collectDescendents(inv_cat->getUUID(), descendent_categories, descendent_items, FALSE);
+        gInventory.collectDescendents(inv_cat->getUUID(), descendent_categories, descendent_items, false);
 
-        int dragged_folder_count = descendent_categories.size() + bundle_size;  // Note: We assume that we're moving a bunch of folders in. That might be wrong...
+        int dragged_folder_count = static_cast<int>(descendent_categories.size()) + bundle_size;  // Note: We assume that we're moving a bunch of folders in. That might be wrong...
         int dragged_item_count = count_copyable_items(descendent_items) + count_stock_folders(descendent_categories);
         int dragged_stock_count = count_stock_items(descendent_items);
         int existing_item_count = 0;
@@ -1444,16 +1444,16 @@ bool can_move_folder_to_marketplace(const LLInventoryCategory* root_folder, LLIn
             // Tally the total number of categories and items inside the root folder
             LLInventoryModel::cat_array_t existing_categories;
             LLInventoryModel::item_array_t existing_items;
-            gInventory.collectDescendents(version_folder->getUUID(), existing_categories, existing_items, FALSE);
+            gInventory.collectDescendents(version_folder->getUUID(), existing_categories, existing_items, false);
 
-            existing_folder_count += existing_categories.size();
+            existing_folder_count += static_cast<int>(existing_categories.size());
             existing_item_count += count_copyable_items(existing_items) + count_stock_folders(existing_categories);
             existing_stock_count += count_stock_items(existing_items);
         }
 
-        const int total_folder_count = existing_folder_count + dragged_folder_count;
-        const int total_item_count = existing_item_count + dragged_item_count;
-        const int total_stock_count = existing_stock_count + dragged_stock_count;
+        const unsigned int total_folder_count = existing_folder_count + dragged_folder_count;
+        const unsigned int total_item_count = existing_item_count + dragged_item_count;
+        const unsigned int total_stock_count = existing_stock_count + dragged_stock_count;
 
         if (total_folder_count > gSavedSettings.getU32("InventoryOutboxMaxFolderCount"))
         {
@@ -1876,7 +1876,7 @@ void validate_marketplacelistings(
     }
 
     // How many types of items? Which type is it if only one?
-    S32 count = items_vector.size();
+    auto count = items_vector.size();
     U32 default_key = (U32)(LLInventoryType::IT_COUNT) << 24; // This is the key for any normal copyable item
     U32 unique_key = (count == 1 ? items_vector.begin()->first : default_key); // The key in the case of one item type only
 
@@ -2159,7 +2159,7 @@ void change_item_parent(const LLUUID& item_id, const LLUUID& new_parent_id)
 
         LLPointer<LLViewerInventoryItem> new_item = new LLViewerInventoryItem(inv_item);
         new_item->setParent(new_parent_id);
-        new_item->updateParentOnServer(FALSE);
+        new_item->updateParentOnServer(false);
         gInventory.updateItem(new_item);
         gInventory.notifyObservers();
     }
@@ -2199,7 +2199,7 @@ void move_items_to_folder(const LLUUID& new_cat_uuid, const uuid_vec_t& selected
             LLFolderViewItem* fv_folder = sidepanel_inventory->getActivePanel()->getItemByID(new_cat_uuid);
             if (fv_folder)
             {
-                fv_folder->setOpen(TRUE);
+                fv_folder->setOpen(true);
             }
         }
     }
@@ -2263,7 +2263,7 @@ std::string get_category_path(LLUUID cat_id)
     }
 }
 // Returns true if the item can be moved to Current Outfit or any outfit folder.
-bool can_move_to_outfit(LLInventoryItem* inv_item, BOOL move_is_into_current_outfit)
+bool can_move_to_outfit(LLInventoryItem* inv_item, bool move_is_into_current_outfit)
 {
     LLInventoryType::EType inv_type = inv_item->getInventoryType();
     if ((inv_type != LLInventoryType::IT_WEARABLE) &&
@@ -2295,7 +2295,7 @@ bool can_move_to_outfit(LLInventoryItem* inv_item, BOOL move_is_into_current_out
     return true;
 }
 
-// Returns TRUE if item is a landmark or a link to a landmark
+// Returns true if item is a landmark or a link to a landmark
 // and can be moved to Favorites or Landmarks folder.
 bool can_move_to_landmarks(LLInventoryItem* inv_item)
 {
@@ -2629,40 +2629,40 @@ bool LLIsType::operator()(LLInventoryCategory* cat, LLInventoryItem* item)
 {
     if(mType == LLAssetType::AT_CATEGORY)
     {
-        if(cat) return TRUE;
+        if(cat) return true;
     }
     if(item)
     {
-        if(item->getType() == mType) return TRUE;
+        if(item->getType() == mType) return true;
     }
-    return FALSE;
+    return false;
 }
 
 bool LLIsNotType::operator()(LLInventoryCategory* cat, LLInventoryItem* item)
 {
     if(mType == LLAssetType::AT_CATEGORY)
     {
-        if(cat) return FALSE;
+        if(cat) return false;
     }
     if(item)
     {
-        if(item->getType() == mType) return FALSE;
-        else return TRUE;
+        if(item->getType() == mType) return false;
+        else return true;
     }
-    return TRUE;
+    return true;
 }
 
 bool LLIsOfAssetType::operator()(LLInventoryCategory* cat, LLInventoryItem* item)
 {
     if(mType == LLAssetType::AT_CATEGORY)
     {
-        if(cat) return TRUE;
+        if(cat) return true;
     }
     if(item)
     {
-        if(item->getActualType() == mType) return TRUE;
+        if(item->getActualType() == mType) return true;
     }
-    return FALSE;
+    return false;
 }
 
 bool LLAssetIDAndTypeMatches::operator()(LLInventoryCategory* cat, LLInventoryItem* item)
@@ -2684,7 +2684,7 @@ bool LLIsTypeWithPermissions::operator()(LLInventoryCategory* cat, LLInventoryIt
     {
         if(cat)
         {
-            return TRUE;
+            return true;
         }
     }
     if(item)
@@ -2694,11 +2694,11 @@ bool LLIsTypeWithPermissions::operator()(LLInventoryCategory* cat, LLInventoryIt
             LLPermissions perm = item->getPermissions();
             if ((perm.getMaskBase() & mPerm) == mPerm)
             {
-                return TRUE;
+                return true;
             }
         }
     }
-    return FALSE;
+    return false;
 }
 
 bool LLBuddyCollector::operator()(LLInventoryCategory* cat,
@@ -2742,10 +2742,10 @@ bool LLParticularBuddyCollector::operator()(LLInventoryCategory* cat,
         if((LLAssetType::AT_CALLINGCARD == item->getType())
            && (item->getCreatorUUID() == mBuddyID))
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -2797,9 +2797,9 @@ bool LLFindBrokenLinks::operator()(LLInventoryCategory* cat,
     // it is linked too
     if (item && LLAssetType::lookupIsLinkType(item->getType()))
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 bool LLFindWearables::operator()(LLInventoryCategory* cat,
@@ -2810,10 +2810,10 @@ bool LLFindWearables::operator()(LLInventoryCategory* cat,
         if((item->getType() == LLAssetType::AT_CLOTHING)
            || (item->getType() == LLAssetType::AT_BODYPART))
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 LLFindWearablesEx::LLFindWearablesEx(bool is_worn, bool include_body_parts)
@@ -2905,7 +2905,7 @@ bool LLLinkedItemIDMatches::operator()(LLInventoryCategory* cat, LLInventoryItem
             (item->getLinkedUUID() == mBaseItemID)); // A linked item's assetID will be the compared-to item's itemID.
 }
 
-void LLSaveFolderState::setApply(BOOL apply)
+void LLSaveFolderState::setApply(bool apply)
 {
     mApply = apply;
     // before generating new list of open folders, clear the old one
@@ -2928,7 +2928,7 @@ void LLSaveFolderState::doFolder(LLFolderViewFolder* folder)
         {
             if (!folder->isOpen())
             {
-                folder->setOpen(TRUE);
+                folder->setOpen(true);
             }
         }
         else
@@ -2936,7 +2936,7 @@ void LLSaveFolderState::doFolder(LLFolderViewFolder* folder)
             // keep selected filter in its current state, this is less jarring to user
             if (!folder->isSelected() && folder->isOpen())
             {
-                folder->setOpen(FALSE);
+                folder->setOpen(false);
             }
         }
     }
@@ -2954,7 +2954,7 @@ void LLOpenFilteredFolders::doItem(LLFolderViewItem *item)
 {
     if (item->passedFilter())
     {
-        item->getParentFolder()->setOpenArrangeRecursively(TRUE, LLFolderViewFolder::RECURSE_UP);
+        item->getParentFolder()->setOpenArrangeRecursively(true, LLFolderViewFolder::RECURSE_UP);
     }
 }
 
@@ -2962,12 +2962,12 @@ void LLOpenFilteredFolders::doFolder(LLFolderViewFolder* folder)
 {
     if (folder->LLFolderViewItem::passedFilter() && folder->getParentFolder())
     {
-        folder->getParentFolder()->setOpenArrangeRecursively(TRUE, LLFolderViewFolder::RECURSE_UP);
+        folder->getParentFolder()->setOpenArrangeRecursively(true, LLFolderViewFolder::RECURSE_UP);
     }
     // if this folder didn't pass the filter, and none of its descendants did
     else if (!folder->getViewModelItem()->passedFilter() && !folder->getViewModelItem()->descendantsPassedFilter())
     {
-        folder->setOpenArrangeRecursively(FALSE, LLFolderViewFolder::RECURSE_NO);
+        folder->setOpenArrangeRecursively(false, LLFolderViewFolder::RECURSE_NO);
     }
 }
 
@@ -2975,12 +2975,12 @@ void LLSelectFirstFilteredItem::doItem(LLFolderViewItem *item)
 {
     if (item->passedFilter() && !mItemSelected)
     {
-        item->getRoot()->setSelection(item, FALSE, FALSE);
+        item->getRoot()->setSelection(item, false, false);
         if (item->getParentFolder())
         {
-            item->getParentFolder()->setOpenArrangeRecursively(TRUE, LLFolderViewFolder::RECURSE_UP);
+            item->getParentFolder()->setOpenArrangeRecursively(true, LLFolderViewFolder::RECURSE_UP);
         }
-        mItemSelected = TRUE;
+        mItemSelected = true;
     }
 }
 
@@ -2989,9 +2989,9 @@ void LLSelectFirstFilteredItem::doFolder(LLFolderViewFolder* folder)
     // Skip if folder or item already found, if not filtered or if no parent (root folder is not selectable)
     if (!mFolderSelected && !mItemSelected && folder->LLFolderViewItem::passedFilter() && folder->getParentFolder())
     {
-        folder->getRoot()->setSelection(folder, FALSE, FALSE);
-        folder->getParentFolder()->setOpenArrangeRecursively(TRUE, LLFolderViewFolder::RECURSE_UP);
-        mFolderSelected = TRUE;
+        folder->getRoot()->setSelection(folder, false, false);
+        folder->getParentFolder()->setOpenArrangeRecursively(true, LLFolderViewFolder::RECURSE_UP);
+        mFolderSelected = true;
     }
 }
 
@@ -2999,7 +2999,7 @@ void LLOpenFoldersWithSelection::doItem(LLFolderViewItem *item)
 {
     if (item->getParentFolder() && item->isSelected())
     {
-        item->getParentFolder()->setOpenArrangeRecursively(TRUE, LLFolderViewFolder::RECURSE_UP);
+        item->getParentFolder()->setOpenArrangeRecursively(true, LLFolderViewFolder::RECURSE_UP);
     }
 }
 
@@ -3007,7 +3007,7 @@ void LLOpenFoldersWithSelection::doFolder(LLFolderViewFolder* folder)
 {
     if (folder->getParentFolder() && folder->isSelected())
     {
-        folder->getParentFolder()->setOpenArrangeRecursively(TRUE, LLFolderViewFolder::RECURSE_UP);
+        folder->getParentFolder()->setOpenArrangeRecursively(true, LLFolderViewFolder::RECURSE_UP);
     }
 }
 
@@ -3017,7 +3017,7 @@ void LLInventoryAction::callback_doToSelected(const LLSD& notification, const LL
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
     if (option == 0) // YES
     {
-        doToSelected(model, root, action, FALSE);
+        doToSelected(model, root, action, false);
     }
 }
 
@@ -3026,11 +3026,11 @@ void LLInventoryAction::callback_copySelected(const LLSD& notification, const LL
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
     if (option == 0) // YES, Move no copy item(s)
     {
-        doToSelected(model, root, "copy_or_move_to_marketplace_listings", FALSE);
+        doToSelected(model, root, "copy_or_move_to_marketplace_listings", false);
     }
     else if (option == 1) // NO, Don't move no copy item(s) (leave them behind)
     {
-        doToSelected(model, root, "copy_to_marketplace_listings", FALSE);
+        doToSelected(model, root, "copy_to_marketplace_listings", false);
     }
 }
 
@@ -3063,7 +3063,7 @@ bool get_selection_object_uuids(LLFolderView *root, uuid_vec_t& ids)
 }
 
 
-void LLInventoryAction::doToSelected(LLInventoryModel* model, LLFolderView* root, const std::string& action, BOOL user_confirm)
+void LLInventoryAction::doToSelected(LLInventoryModel* model, LLFolderView* root, const std::string& action, bool user_confirm)
 {
     std::set<LLFolderViewItem*> selected_items = root->getSelectionList();
     if (selected_items.empty()
@@ -3181,7 +3181,7 @@ void LLInventoryAction::doToSelected(LLInventoryModel* model, LLFolderView* root
                 LLInventoryModel::cat_array_t categories;
                 LLInventoryModel::item_array_t items;
 
-                gInventory.collectDescendents(obj_id, categories, items, FALSE);
+                gInventory.collectDescendents(obj_id, categories, items, false);
 
                 for (LLInventoryModel::item_array_t::value_type& item : items)
                 {
@@ -3455,6 +3455,23 @@ void LLInventoryAction::doToSelected(LLInventoryModel* model, LLFolderView* root
             ungroup_folder_items(*ids.begin());
         }
     }
+    else if ("thumbnail" == action)
+    {
+        if (selected_items.size() > 0)
+        {
+            LLSD data;
+            std::set<LLFolderViewItem*>::iterator set_iter;
+            for (set_iter = selected_items.begin(); set_iter != selected_items.end(); ++set_iter)
+            {
+                LLFolderViewItem* folder_item = *set_iter;
+                if (!folder_item) continue;
+                LLInvFVBridge* bridge = (LLInvFVBridge*)folder_item->getViewModelItem();
+                if (!bridge) continue;
+                data.append(bridge->getUUID());
+            }
+            LLFloaterReg::showInstance("change_item_thumbnail", data);
+        }
+    }
     else
     {
         std::set<LLFolderViewItem*>::iterator set_iter;
@@ -3582,7 +3599,7 @@ void LLInventoryAction::onItemsRemovalConfirmation(const LLSD& notification, con
                     LLInventoryModel::cat_array_t categories;
                     LLInventoryModel::item_array_t items;
 
-                    gInventory.collectDescendents(obj_id, categories, items, FALSE);
+                    gInventory.collectDescendents(obj_id, categories, items, false);
 
                     for (LLInventoryModel::item_array_t::value_type& item : items)
                     {
diff --git a/indra/newview/llinventoryfunctions.h b/indra/newview/llinventoryfunctions.h
index 5cb996ad54..a25c0d5ad6 100644
--- a/indra/newview/llinventoryfunctions.h
+++ b/indra/newview/llinventoryfunctions.h
@@ -43,14 +43,14 @@ const S32 COMPUTE_STOCK_NOT_EVALUATED = -2;
  **/
 
 // Is this a parent folder to a worn item
-BOOL get_is_parent_to_worn_item(const LLUUID& id);
+bool get_is_parent_to_worn_item(const LLUUID& id);
 
 // Is this item or its baseitem is worn, attached, etc...
-BOOL get_is_item_worn(const LLUUID& id);
-BOOL get_is_item_worn(const LLViewerInventoryItem* item);
+bool get_is_item_worn(const LLUUID& id);
+bool get_is_item_worn(const LLViewerInventoryItem* item);
 
 // Could this item be worn (correct type + not already being worn)
-BOOL get_can_item_be_worn(const LLUUID& id);
+bool get_can_item_be_worn(const LLUUID& id);
 
 bool get_is_item_removable(const LLInventoryModel* model, const LLUUID& id, bool check_worn);
 
@@ -58,10 +58,10 @@ bool get_is_item_removable(const LLInventoryModel* model, const LLUUID& id, bool
 bool get_is_item_editable(const LLUUID& inv_item_id);
 void handle_item_edit(const LLUUID& inv_item_id);
 
-BOOL get_is_category_removable(const LLInventoryModel* model, const LLUUID& id);
+bool get_is_category_removable(const LLInventoryModel* model, const LLUUID& id);
 bool get_is_category_and_children_removable(LLInventoryModel* model, const LLUUID& folder_id, bool check_worn);
 
-BOOL get_is_category_renameable(const LLInventoryModel* model, const LLUUID& id);
+bool get_is_category_renameable(const LLInventoryModel* model, const LLUUID& id);
 
 void show_item_profile(const LLUUID& item_uuid);
 void show_task_item_profile(const LLUUID& item_uuid, const LLUUID& object_id);
@@ -110,7 +110,7 @@ bool is_only_cats_selected(const uuid_vec_t& selected_uuids);
 bool is_only_items_selected(const uuid_vec_t& selected_uuids);
 std::string get_category_path(LLUUID cat_id);
 
-bool can_move_to_outfit(LLInventoryItem* inv_item, BOOL move_is_into_current_outfit);
+bool can_move_to_outfit(LLInventoryItem* inv_item, bool move_is_into_current_outfit);
 bool can_move_to_landmarks(LLInventoryItem* inv_item);
 bool can_move_to_my_outfits(LLInventoryModel* model, LLInventoryCategory* inv_cat, U32 wear_limit);
 std::string get_localized_folder_name(LLUUID cat_uuid);
@@ -180,7 +180,7 @@ private:
 // Base class for LLInventoryModel::collectDescendentsIf() method
 // which accepts an instance of one of these objects to use as the
 // function to determine if it should be added. Derive from this class
-// and override the () operator to return TRUE if you want to collect
+// and override the () operator to return true if you want to collect
 // the category or item passed in.
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 class LLInventoryCollectFunctor
@@ -230,7 +230,7 @@ protected:
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 // Class LLIsType
 //
-// Implementation of a LLInventoryCollectFunctor which returns TRUE if
+// Implementation of a LLInventoryCollectFunctor which returns true if
 // the type is the type passed in during construction.
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -248,7 +248,7 @@ protected:
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 // Class LLIsNotType
 //
-// Implementation of a LLInventoryCollectFunctor which returns FALSE if the
+// Implementation of a LLInventoryCollectFunctor which returns false if the
 // type is the type passed in during construction, otherwise false.
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 class LLIsNotType : public LLInventoryCollectFunctor
@@ -265,7 +265,7 @@ protected:
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 // Class LLIsOfAssetType
 //
-// Implementation of a LLInventoryCollectFunctor which returns TRUE if
+// Implementation of a LLInventoryCollectFunctor which returns true if
 // the item or category is of asset type passed in during construction.
 // Link types are treated as links, not as the types they point to.
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -284,7 +284,7 @@ protected:
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 // Class LLAssetIDAndTypeMatches
 //
-// Implementation of a LLInventoryCollectFunctor which returns TRUE if
+// Implementation of a LLInventoryCollectFunctor which returns true if
 // the item matches both asset type and asset id.
 // This is needed in case you are looking for a specific type with default id
 // (since null is default for multiple asset types)
@@ -572,13 +572,13 @@ class LLInventoryState
 {
 public:
     // HACK: Until we can route this info through the instant message hierarchy
-    static BOOL sWearNewClothing;
+    static bool sWearNewClothing;
     static LLUUID sWearNewClothingTransactionID;    // wear all clothing in this transaction
 };
 
 struct LLInventoryAction
 {
-    static void doToSelected(LLInventoryModel* model, LLFolderView* root, const std::string& action, BOOL user_confirm = TRUE);
+    static void doToSelected(LLInventoryModel* model, LLFolderView* root, const std::string& action, bool user_confirm = true);
     static void callback_doToSelected(const LLSD& notification, const LLSD& response, class LLInventoryModel* model, class LLFolderView* root, const std::string& action);
     static void callback_copySelected(const LLSD& notification, const LLSD& response, class LLInventoryModel* model, class LLFolderView* root, const std::string& action);
     static void onItemsRemovalConfirmation(const LLSD& notification, const LLSD& response, LLHandle<LLFolderView> root);
diff --git a/indra/newview/llinventorygallery.cpp b/indra/newview/llinventorygallery.cpp
index 329c0d751a..c69f797868 100644
--- a/indra/newview/llinventorygallery.cpp
+++ b/indra/newview/llinventorygallery.cpp
@@ -61,18 +61,18 @@ const S32 GALLERY_ITEMS_PER_ROW_MIN = 2;
 const S32 FAST_LOAD_THUMBNAIL_TRSHOLD = 50; // load folders below this value immediately
 
 // Helper dnd functions
-BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat, BOOL drop, std::string& tooltip_msg, BOOL is_link);
-BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop, std::string& tooltip_msg, BOOL user_confirm);
+bool dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat, bool drop, std::string& tooltip_msg, bool is_link);
+bool dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, bool drop, std::string& tooltip_msg, bool user_confirm);
 void dropToMyOutfits(LLInventoryCategory* inv_cat);
 
 class LLGalleryPanel: public LLPanel
 {
 public:
 
-    BOOL canFocusChildren() const override
+    bool canFocusChildren() const override
     {
         // Tell Tab to not focus children
-        return FALSE;
+        return false;
     }
 
 protected:
@@ -144,7 +144,7 @@ const LLInventoryGallery::Params& LLInventoryGallery::getDefaultParams()
     return LLUICtrlFactory::getDefaultParams<LLInventoryGallery>();
 }
 
-BOOL LLInventoryGallery::postBuild()
+bool LLInventoryGallery::postBuild()
 {
     mScrollPanel = getChild<LLScrollContainer>("gallery_scroll_panel");
     LLPanel::Params params = LLPanel::getDefaultParams();
@@ -153,7 +153,7 @@ BOOL LLInventoryGallery::postBuild()
     mInventoryGalleryMenu = new LLInventoryGalleryContextMenu(this);
     mRootGalleryMenu = new LLInventoryGalleryContextMenu(this);
     mRootGalleryMenu->setRootFolder(true);
-    return TRUE;
+    return true;
 }
 
 LLInventoryGallery::~LLInventoryGallery()
@@ -187,7 +187,7 @@ LLInventoryGallery::~LLInventoryGallery()
         mHiddenItems.pop_back();
         panelp->die();
     }
-    
+
 
     if (gInventory.containsObserver(mCategoriesObserver))
     {
@@ -200,7 +200,7 @@ LLInventoryGallery::~LLInventoryGallery()
         gInventory.removeObserver(mThumbnailsObserver);
     }
     delete mThumbnailsObserver;
-    
+
     LLGestureMgr::instance().removeObserver(mGestureObserver);
     delete mGestureObserver;
 }
@@ -223,7 +223,7 @@ void LLInventoryGallery::setRootFolder(const LLUUID cat_id)
     {
         if (mItemMap[id])
         {
-            mItemMap[id]->setSelected(FALSE);
+            mItemMap[id]->setSelected(false);
         }
     }
 
@@ -257,13 +257,13 @@ void LLInventoryGallery::updateRootFolder()
         {
             updateRemovedItem(mItems[i]->getUUID());
         }
-        S32 hidden_count = mHiddenItems.size();
+        S32 hidden_count = static_cast<S32>(mHiddenItems.size());
         for (S32 i = hidden_count - 1; i >= 0; i--)
         {
             updateRemovedItem(mHiddenItems[i]->getUUID());
         }
         mItemBuildQuery.clear();
-        
+
         if (gInventory.containsObserver(mCategoriesObserver))
         {
             gInventory.removeObserver(mCategoriesObserver);
@@ -284,7 +284,7 @@ void LLInventoryGallery::updateRootFolder()
         mRootChangedSignal();
 
         gInventory.addObserver(mCategoriesObserver);
-        
+
         // Start observing changes in selected category.
         mCategoriesObserver->addCategory(mFolderID,
             boost::bind(&LLInventoryGallery::refreshList, this, mFolderID));
@@ -294,7 +294,7 @@ void LLInventoryGallery::updateRootFolder()
         // the observer will refresh the list as soon as the new items
         // arrive.
         category->fetch();
-        
+
         //refreshList(cat_id);
         LLInventoryModel::cat_array_t* cat_array;
         LLInventoryModel::item_array_t* item_array;
@@ -308,7 +308,7 @@ void LLInventoryGallery::updateRootFolder()
         {
             mItemBuildQuery.insert((*iter)->getUUID());
         }
-        
+
         for (LLInventoryModel::item_array_t::const_iterator iter = item_array->begin();
             iter != item_array->end();
             iter++)
@@ -343,7 +343,7 @@ void LLInventoryGallery::initGallery()
     {
         uuid_vec_t cats;
         getCurrentCategories(cats);
-        int n = cats.size();
+        int n = static_cast<int>(cats.size());
         buildGalleryPanel(n);
         mScrollPanel->addChild(mGalleryPanel);
         for (int i = 0; i < n; i++)
@@ -367,7 +367,7 @@ void LLInventoryGallery::draw()
     }
 }
 
-void LLInventoryGallery::onVisibilityChange(BOOL new_visibility)
+void LLInventoryGallery::onVisibilityChange(bool new_visibility)
 {
     if (new_visibility)
     {
@@ -448,7 +448,7 @@ void LLInventoryGallery::reArrangeRows(S32 row_diff)
         buf_items.push_back(*it);
     }
     mHiddenItems.clear();
-    
+
     mItemsInRow+= row_diff;
     updateGalleryWidth();
 
@@ -458,7 +458,7 @@ void LLInventoryGallery::reArrangeRows(S32 row_diff)
     {
         return compareGalleryItem(item1, item2, sort_by_date, sort_folders_by_name);
     });
-    
+
     for (std::vector<LLInventoryGalleryItem*>::const_iterator it = buf_items.begin(); it != buf_items.end(); ++it)
     {
         (*it)->setHidden(false);
@@ -619,8 +619,8 @@ void LLInventoryGallery::removeFromGalleryMiddle(LLInventoryGalleryItem* item)
         removeFromGalleryLast(mItems[i]);
     }
     removeFromGalleryLast(mItems[n]);
-    int saved_count = saved.size();
-    for (int i = 0; i < saved_count; i++)
+    size_t saved_count = saved.size();
+    for (size_t i = 0; i < saved_count; i++)
     {
         addToGallery(saved.back());
         saved.pop_back();
@@ -735,7 +735,7 @@ void LLInventoryGallery::setFilterSubString(const std::string& string)
 {
     mFilterSubString = string;
     mFilter->setFilterSubString(string);
-    
+
     //reArrangeRows();
 }
 
@@ -763,7 +763,7 @@ bool LLInventoryGallery::checkAgainstFilters(LLInventoryGalleryItem* item, const
     {
         return false;
     }
-    
+
     bool hidden = false;
 
     if(mFilter->getFilterCreatorType() == LLInventoryFilter::FILTERCREATOR_SELF)
@@ -806,7 +806,7 @@ bool LLInventoryGallery::checkAgainstFilters(LLInventoryGalleryItem* item, const
             desc = item->getItemName() + item->getItemNameSuffix();
             break;
     }
-    
+
     LLStringUtil::toUpper(desc);
 
     std::string cur_filter = filter_substring;
@@ -1020,7 +1020,7 @@ void LLInventoryGallery::updateItemThumbnail(LLUUID item_id)
     }
 }
 
-BOOL LLInventoryGallery::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLInventoryGallery::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     if (mSelectedItemIDs.size() > 0)
     {
@@ -1029,7 +1029,7 @@ BOOL LLInventoryGallery::handleRightMouseDown(S32 x, S32 y, MASK mask)
     mLastInteractedUUID = LLUUID::null;
 
     // Scroll is going to always return true
-    BOOL res = LLPanel::handleRightMouseDown(x, y, mask);
+    bool res = LLPanel::handleRightMouseDown(x, y, mask);
 
     if (mLastInteractedUUID.isNull()) // no child were hit
     {
@@ -1039,16 +1039,16 @@ BOOL LLInventoryGallery::handleRightMouseDown(S32 x, S32 y, MASK mask)
             uuid_vec_t selected_uuids;
             selected_uuids.push_back(mFolderID);
             mRootGalleryMenu->show(this, selected_uuids, x, y);
-            return TRUE;
+            return true;
         }
     }
     return res;
 }
 
 
-BOOL LLInventoryGallery::handleKeyHere(KEY key, MASK mask)
+bool LLInventoryGallery::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     switch (key)
     {
         case KEY_RETURN:
@@ -1060,7 +1060,7 @@ BOOL LLInventoryGallery::handleKeyHere(KEY key, MASK mask)
                 if (category)
                 {
                     setRootFolder(*iter);
-                    handled = TRUE;
+                    handled = true;
                 }
                 else
                 {
@@ -1071,7 +1071,7 @@ BOOL LLInventoryGallery::handleKeyHere(KEY key, MASK mask)
                     }
                 }
             }
-            handled = TRUE;
+            handled = true;
             break;
         case KEY_DELETE:
 #if LL_DARWIN
@@ -1083,7 +1083,7 @@ BOOL LLInventoryGallery::handleKeyHere(KEY key, MASK mask)
             {
                 deleteSelection();
             }
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_F2:
@@ -1092,7 +1092,7 @@ BOOL LLInventoryGallery::handleKeyHere(KEY key, MASK mask)
             {
                 mInventoryGalleryMenu->rename(mSelectedItemIDs.front());
             }
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_PAGE_UP:
@@ -1101,7 +1101,7 @@ BOOL LLInventoryGallery::handleKeyHere(KEY key, MASK mask)
             {
                 mScrollPanel->pageUp(30);
             }
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_PAGE_DOWN:
@@ -1110,7 +1110,7 @@ BOOL LLInventoryGallery::handleKeyHere(KEY key, MASK mask)
             {
                 mScrollPanel->pageDown(30);
             }
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_HOME:
@@ -1119,7 +1119,7 @@ BOOL LLInventoryGallery::handleKeyHere(KEY key, MASK mask)
             {
                 mScrollPanel->goToTop();
             }
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_END:
@@ -1128,27 +1128,27 @@ BOOL LLInventoryGallery::handleKeyHere(KEY key, MASK mask)
             {
                 mScrollPanel->goToBottom();
             }
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_LEFT:
             moveLeft(mask);
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_RIGHT:
             moveRight(mask);
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_UP:
             moveUp(mask);
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_DOWN:
             moveDown(mask);
-            handled = TRUE;
+            handled = true;
             break;
 
         default:
@@ -1188,7 +1188,7 @@ void LLInventoryGallery::moveUp(MASK mask)
                     {
                         changeItemSelection(item_id, true);
                     }
-                    item->setFocus(TRUE);
+                    item->setFocus(true);
                     claimEditHandler();
                 }
             }
@@ -1200,7 +1200,7 @@ void LLInventoryGallery::moveUp(MASK mask)
                 {
                     item = mIndexToItemMap[target];
                     toggleSelectionRangeFromLast(item->getUUID());
-                    item->setFocus(TRUE);
+                    item->setFocus(true);
                     claimEditHandler();
                 }
             }
@@ -1233,7 +1233,7 @@ void LLInventoryGallery::moveDown(MASK mask)
                     {
                         changeItemSelection(item_id, true);
                     }
-                    item->setFocus(TRUE);
+                    item->setFocus(true);
                     claimEditHandler();
                 }
             }
@@ -1245,7 +1245,7 @@ void LLInventoryGallery::moveDown(MASK mask)
                 {
                     item = mIndexToItemMap[target];
                     toggleSelectionRangeFromLast(item->getUUID());
-                    item->setFocus(TRUE);
+                    item->setFocus(true);
                     claimEditHandler();
                 }
             }
@@ -1295,7 +1295,7 @@ void LLInventoryGallery::moveLeft(MASK mask)
             {
                 changeItemSelection(item_id, true);
             }
-            item->setFocus(TRUE);
+            item->setFocus(true);
             claimEditHandler();
         }
     }
@@ -1338,7 +1338,7 @@ void LLInventoryGallery::moveRight(MASK mask)
             {
                 changeItemSelection(item_id, true);
             }
-            item->setFocus(TRUE);
+            item->setFocus(true);
             claimEditHandler();
         }
     }
@@ -1443,7 +1443,7 @@ void LLInventoryGallery::onFocusReceived()
         }
         if (focus_item)
         {
-            focus_item->setFocus(TRUE);
+            focus_item->setFocus(true);
         }
     }
     else if (mIndexToItemMap.size() > 0 && mItemsToSelect.empty())
@@ -1455,7 +1455,7 @@ void LLInventoryGallery::onFocusReceived()
 
         LLInventoryGalleryItem* focus_item = mIndexToItemMap[n];
         changeItemSelection(focus_item->getUUID(), true);
-        focus_item->setFocus(TRUE);
+        focus_item->setFocus(true);
     }
 
     LLPanel::onFocusReceived();
@@ -1480,7 +1480,7 @@ void LLInventoryGallery::changeItemSelection(const LLUUID& item_id, bool scroll_
     {
         if (mItemMap[id])
         {
-            mItemMap[id]->setSelected(FALSE);
+            mItemMap[id]->setSelected(false);
         }
     }
     mSelectedItemIDs.clear();
@@ -1501,7 +1501,7 @@ void LLInventoryGallery::changeItemSelection(const LLUUID& item_id, bool scroll_
 
     if (mItemMap[item_id])
     {
-        mItemMap[item_id]->setSelected(TRUE);
+        mItemMap[item_id]->setSelected(true);
     }
     mSelectedItemIDs.push_back(item_id);
     signalSelectionItemID(item_id);
@@ -1529,7 +1529,7 @@ void LLInventoryGallery::addItemSelection(const LLUUID& item_id, bool scroll_to_
 
     if (mItemMap[item_id])
     {
-        mItemMap[item_id]->setSelected(TRUE);
+        mItemMap[item_id]->setSelected(true);
     }
     mSelectedItemIDs.push_back(item_id);
     signalSelectionItemID(item_id);
@@ -1554,7 +1554,7 @@ bool LLInventoryGallery::toggleItemSelection(const LLUUID& item_id, bool scroll_
     {
         if (mItemMap[item_id])
         {
-            mItemMap[item_id]->setSelected(FALSE);
+            mItemMap[item_id]->setSelected(false);
         }
         mSelectedItemIDs.erase(found);
         result = false;
@@ -1563,7 +1563,7 @@ bool LLInventoryGallery::toggleItemSelection(const LLUUID& item_id, bool scroll_
     {
         if (mItemMap[item_id])
         {
-            mItemMap[item_id]->setSelected(TRUE);
+            mItemMap[item_id]->setSelected(true);
         }
         mSelectedItemIDs.push_back(item_id);
         signalSelectionItemID(item_id);
@@ -1631,22 +1631,22 @@ void LLInventoryGallery::copy()
     mFilterSubString.clear();
 }
 
-BOOL LLInventoryGallery::canCopy() const
+bool LLInventoryGallery::canCopy() const
 {
     if (!getVisible() || !getEnabled() || mSelectedItemIDs.empty())
     {
-        return FALSE;
+        return false;
     }
 
     for (const LLUUID& id : mSelectedItemIDs)
     {
         if (!isItemCopyable(id))
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLInventoryGallery::cut()
@@ -1707,11 +1707,11 @@ bool is_category_removable(const LLUUID& folder_id, bool check_worn)
     return true;
 }
 
-BOOL LLInventoryGallery::canCut() const
+bool LLInventoryGallery::canCut() const
 {
     if (!getVisible() || !getEnabled() || mSelectedItemIDs.empty())
     {
-        return FALSE;
+        return false;
     }
 
     for (const LLUUID& id : mSelectedItemIDs)
@@ -1721,16 +1721,16 @@ BOOL LLInventoryGallery::canCut() const
         {
             if (!get_is_category_and_children_removable(&gInventory, id, true))
             {
-                return FALSE;
+                return false;
             }
         }
         else if (!get_is_item_removable(&gInventory, id, true))
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLInventoryGallery::paste()
@@ -1770,7 +1770,7 @@ void LLInventoryGallery::paste()
         {
             if (mItemMap[id])
             {
-                mItemMap[id]->setSelected(FALSE);
+                mItemMap[id]->setSelected(false);
             }
         }
         mSelectedItemIDs.clear();
@@ -1867,35 +1867,32 @@ void LLInventoryGallery::paste(const LLUUID& dest,
     LLClipboard::instance().setCutMode(false);
 }
 
-BOOL LLInventoryGallery::canPaste() const
+bool LLInventoryGallery::canPaste() const
 {
-    // Return FALSE on degenerated cases: empty clipboard, no inventory, no agent
+    // Return false on degenerated cases: empty clipboard, no inventory, no agent
     if (!LLClipboard::instance().hasContents())
     {
-        return FALSE;
+        return false;
     }
 
     // In cut mode, whatever is on the clipboard is always pastable
     if (LLClipboard::instance().isCutMode())
     {
-        return TRUE;
+        return true;
     }
 
     // In normal mode, we need to check each element of the clipboard to know if we can paste or not
-    std::vector<LLUUID> objects;
+    uuid_vec_t objects;
     LLClipboard::instance().pasteFromClipboard(objects);
-    S32 count = objects.size();
-    for (S32 i = 0; i < count; i++)
+    for (const auto& item_id : objects)
     {
-        const LLUUID& item_id = objects.at(i);
-
         // Each item must be copyable to be pastable
         if (!isItemCopyable(item_id))
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 void LLInventoryGallery::onDelete(const LLSD& notification, const LLSD& response, const selection_deque selected_ids)
@@ -1918,7 +1915,7 @@ void LLInventoryGallery::onDelete(const LLSD& notification, const LLSD& response
                     LLInventoryModel::cat_array_t categories;
                     LLInventoryModel::item_array_t items;
 
-                    gInventory.collectDescendents(obj_id, categories, items, FALSE);
+                    gInventory.collectDescendents(obj_id, categories, items, false);
 
                     for (LLInventoryModel::item_array_t::value_type& item : items)
                     {
@@ -1984,7 +1981,7 @@ void LLInventoryGallery::deleteSelection()
             LLInventoryModel::cat_array_t categories;
             LLInventoryModel::item_array_t items;
 
-            gInventory.collectDescendents(id, categories, items, FALSE);
+            gInventory.collectDescendents(id, categories, items, false);
 
             for (LLInventoryModel::item_array_t::value_type& item : items)
             {
@@ -2012,7 +2009,7 @@ void LLInventoryGallery::deleteSelection()
         if (item && get_is_item_worn(item))
         {
             has_worn = true;
-            LLWearableType::EType type = item->getWearableType();            
+            LLWearableType::EType type = item->getWearableType();
             if (type == LLWearableType::WT_SHAPE
                 || type == LLWearableType::WT_SKIN
                 || type == LLWearableType::WT_HAIR
@@ -2113,7 +2110,7 @@ void LLInventoryGallery::pasteAsLink()
         {
             if (mItemMap[id])
             {
-                mItemMap[id]->setSelected(FALSE);
+                mItemMap[id]->setSelected(false);
             }
         }
         mSelectedItemIDs.clear();
@@ -2130,9 +2127,9 @@ void LLInventoryGallery::pasteAsLink(const LLUUID& dest,
                                      const LLUUID& marketplacelistings_id,
                                      const LLUUID& my_outifts_id)
 {
-    const BOOL move_is_into_current_outfit = (dest == current_outfit_id);
-    const BOOL move_is_into_my_outfits = (dest == my_outifts_id) || gInventory.isObjectDescendentOf(dest, my_outifts_id);
-    const BOOL move_is_into_marketplacelistings = gInventory.isObjectDescendentOf(dest, marketplacelistings_id);
+    const bool move_is_into_current_outfit = (dest == current_outfit_id);
+    const bool move_is_into_my_outfits = (dest == my_outifts_id) || gInventory.isObjectDescendentOf(dest, my_outifts_id);
+    const bool move_is_into_marketplacelistings = gInventory.isObjectDescendentOf(dest, marketplacelistings_id);
 
     if (move_is_into_marketplacelistings || move_is_into_current_outfit || move_is_into_my_outfits)
     {
@@ -2168,6 +2165,39 @@ void LLInventoryGallery::pasteAsLink(const LLUUID& dest,
     }
 }
 
+void LLInventoryGallery::doCreate(const LLUUID& dest, const LLSD& userdata)
+{
+
+    LLViewerInventoryCategory* cat = gInventory.getCategory(dest);
+    if (cat && mFolderID != dest)
+    {
+        menu_create_inventory_item(NULL, dest, userdata, LLUUID::null);
+    }
+    else
+    {
+        // todo: needs to reset current floater's filter,
+        // like reset_inventory_filter()
+
+        LLHandle<LLPanel> handle = getHandle();
+        std::function<void(const LLUUID&)> callback_cat_created =
+            [handle](const LLUUID& new_id)
+            {
+                gInventory.notifyObservers();
+                LLInventoryGallery* panel = static_cast<LLInventoryGallery*>(handle.get());
+                if (panel && new_id.notNull())
+                {
+                    panel->clearSelection();
+                    if (panel->mItemMap.count(new_id) != 0)
+                    {
+                        panel->addItemSelection(new_id, true);
+                    }
+                }
+            };
+
+        menu_create_inventory_item(NULL, mFolderID, userdata, LLUUID::null, callback_cat_created);
+    }
+}
+
 void LLInventoryGallery::claimEditHandler()
 {
     gEditMenuHandler = this;
@@ -2355,7 +2385,7 @@ void LLInventoryGallery::onCOFChanged()
     LLCommonUtils::computeDifference(vnew, mCOFLinkedItems, vadded, vremoved);
 
     mCOFLinkedItems = vnew;
-    
+
     for (uuid_vec_t::const_iterator iter = vadded.begin();
         iter != vadded.end();
         ++iter)
@@ -2386,7 +2416,7 @@ void LLInventoryGallery::onGesturesChanged()
     LLCommonUtils::computeDifference(vnew, mActiveGestures, vadded, vremoved);
 
     mActiveGestures = vnew;
-    
+
     for (uuid_vec_t::const_iterator iter = vadded.begin();
         iter != vadded.end();
         ++iter)
@@ -2406,7 +2436,7 @@ void LLInventoryGallery::deselectItem(const LLUUID& category_id)
     LLInventoryGalleryItem* item = mItemMap[category_id];
     if (item && item->isSelected())
     {
-        mItemMap[category_id]->setSelected(FALSE);
+        mItemMap[category_id]->setSelected(false);
         setFocus(true);
         // Todo: support multiselect
         // signalSelectionItemID(LLUUID::null);
@@ -2425,7 +2455,7 @@ void LLInventoryGallery::clearSelection()
     {
         if (mItemMap[id])
         {
-            mItemMap[id]->setSelected(FALSE);
+            mItemMap[id]->setSelected(false);
         }
     }
     if (!mSelectedItemIDs.empty())
@@ -2527,12 +2557,12 @@ bool LLInventoryGallery::isForwardAvailable()
     return (!mForwardFolders.empty() && (mFolderID != mForwardFolders.back()));
 }
 
-BOOL LLInventoryGallery::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLInventoryGallery::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                            EDragAndDropType cargo_type, void* cargo_data,
                                            EAcceptance* accept, std::string& tooltip_msg)
 {
     // have children handle it first
-    BOOL handled = LLView::handleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data,
+    bool handled = LLView::handleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data,
                                             accept, tooltip_msg);
 
     // when drop is not handled by child, it should be handled by the root folder .
@@ -2564,7 +2594,7 @@ void LLInventoryGallery::startDrag()
             ids.push_back(selected_id);
         }
 
-        const LLViewerInventoryCategory* cat = gInventory.getCategory(selected_id);        
+        const LLViewerInventoryCategory* cat = gInventory.getCategory(selected_id);
         if (cat)
         {
             if (gInventory.isObjectDescendentOf(selected_id, gInventory.getLibraryRootFolderID()))
@@ -2642,7 +2672,7 @@ bool LLInventoryGallery::checkAgainstFilterType(const LLUUID& object_id)
             break;
         }
     }
-    
+
     if (filterTypes & LLInventoryFilter::FILTERTYPE_DATE)
     {
         const U16 HOURS_TO_SECONDS = 3600;
@@ -2727,13 +2757,13 @@ LLInventoryGalleryItem::~LLInventoryGalleryItem()
 {
 }
 
-BOOL LLInventoryGalleryItem::postBuild()
+bool LLInventoryGalleryItem::postBuild()
 {
     mNameText = getChild<LLTextBox>("item_name");
     mTextBgPanel = getChild<LLPanel>("text_bg_panel");
     mThumbnailCtrl = getChild<LLThumbnailCtrl>("preview_thumbnail");
 
-    return TRUE;
+    return true;
 }
 
 void LLInventoryGalleryItem::setType(LLAssetType::EType type, LLInventoryType::EType inventory_type, U32 flags, bool is_link)
@@ -2837,7 +2867,7 @@ void LLInventoryGalleryItem::draw()
         LLRect border = mThumbnailCtrl->getRect();
         border.mRight = border.mRight + 1;
         border.mTop = border.mTop + 1;
-        gl_rect_2d(border, border_color.get(), FALSE);
+        gl_rect_2d(border, border_color.get(), false);
     }
 }
 
@@ -2862,7 +2892,7 @@ void LLInventoryGalleryItem::setSelected(bool value)
     }
 }
 
-BOOL LLInventoryGalleryItem::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLInventoryGalleryItem::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // call changeItemSelection directly, before setFocus
     // to avoid autoscroll from LLInventoryGallery::onFocusReceived()
@@ -2878,7 +2908,7 @@ BOOL LLInventoryGalleryItem::handleMouseDown(S32 x, S32 y, MASK mask)
     {
         mGallery->changeItemSelection(mUUID, false);
     }
-    setFocus(TRUE);
+    setFocus(true);
     mGallery->claimEditHandler();
 
     gFocusMgr.setMouseCapture(this);
@@ -2886,10 +2916,10 @@ BOOL LLInventoryGalleryItem::handleMouseDown(S32 x, S32 y, MASK mask)
     S32 screen_y;
     localPointToScreen(x, y, &screen_x, &screen_y );
     LLToolDragAndDrop::getInstance()->setDragStart(screen_x, screen_y);
-    return TRUE;
+    return true;
 }
 
-BOOL LLInventoryGalleryItem::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLInventoryGalleryItem::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     if (!isSelected())
     {
@@ -2900,25 +2930,25 @@ BOOL LLInventoryGalleryItem::handleRightMouseDown(S32 x, S32 y, MASK mask)
         // refresh last interacted
         mGallery->addItemSelection(mUUID, false);
     }
-    setFocus(TRUE);
+    setFocus(true);
     mGallery->claimEditHandler();
     mGallery->showContextMenu(this, x, y, mUUID);
 
     LLUICtrl::handleRightMouseDown(x, y, mask);
-    return TRUE;
+    return true;
 }
 
-BOOL LLInventoryGalleryItem::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLInventoryGalleryItem::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if(hasMouseCapture())
     {
         gFocusMgr.setMouseCapture(NULL);
-        return TRUE;
+        return true;
     }
     return LLPanel::handleMouseUp(x, y, mask);
 }
 
-BOOL LLInventoryGalleryItem::handleHover(S32 x, S32 y, MASK mask)
+bool LLInventoryGalleryItem::handleHover(S32 x, S32 y, MASK mask)
 {
     if(hasMouseCapture())
     {
@@ -2935,7 +2965,7 @@ BOOL LLInventoryGalleryItem::handleHover(S32 x, S32 y, MASK mask)
     return LLUICtrl::handleHover(x,y,mask);
 }
 
-BOOL LLInventoryGalleryItem::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLInventoryGalleryItem::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if (mIsFolder && mGallery)
     {
@@ -2958,10 +2988,10 @@ BOOL LLInventoryGalleryItem::handleDoubleClick(S32 x, S32 y, MASK mask)
         LLInvFVBridgeAction::doAction(mUUID, &gInventory);
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLInventoryGalleryItem::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLInventoryGalleryItem::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                        EDragAndDropType cargo_type,
                        void* cargo_data,
                        EAcceptance* accept,
@@ -2969,19 +2999,19 @@ BOOL LLInventoryGalleryItem::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL dro
 {
     if (!mIsFolder)
     {
-        return FALSE;
+        return false;
     }
     return mGallery->baseHandleDragAndDrop(mUUID, drop, cargo_type, cargo_data, accept, tooltip_msg);
 }
 
-BOOL LLInventoryGalleryItem::handleKeyHere(KEY key, MASK mask)
+bool LLInventoryGalleryItem::handleKeyHere(KEY key, MASK mask)
 {
     if (!mGallery)
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL handled = FALSE;
+    bool handled = false;
     switch (key)
     {
         case KEY_LEFT:
@@ -3085,7 +3115,7 @@ void LLThumbnailsObserver::changed(U32 mask)
     {
         const LLUUID& obj_id = (*iter).first;
         LLItemData& data = (*iter).second;
-        
+
         LLInventoryObject* obj = gInventory.getObject(obj_id);
         if (!obj)
         {
@@ -3128,7 +3158,7 @@ void LLThumbnailsObserver::removeItem(const LLUUID& obj_id)
 // Helper drag&drop functions
 //-----------------------------
 
-BOOL LLInventoryGallery::baseHandleDragAndDrop(LLUUID dest_id, BOOL drop,
+bool LLInventoryGallery::baseHandleDragAndDrop(LLUUID dest_id, bool drop,
                        EDragAndDropType cargo_type,
                        void* cargo_data,
                        EAcceptance* accept,
@@ -3141,7 +3171,7 @@ BOOL LLInventoryGallery::baseHandleDragAndDrop(LLUUID dest_id, BOOL drop,
         clearSelection();
     }
 
-    BOOL accepted = FALSE;
+    bool accepted = false;
     switch(cargo_type)
     {
         case DAD_TEXTURE:
@@ -3173,12 +3203,12 @@ BOOL LLInventoryGallery::baseHandleDragAndDrop(LLUUID dest_id, BOOL drop,
                 LLInventoryCategory* linked_category = gInventory.getCategory(inv_item->getLinkedUUID());
                 if (linked_category)
                 {
-                    accepted = dragCategoryIntoFolder(dest_id, (LLInventoryCategory*)linked_category, drop, tooltip_msg, TRUE);
+                    accepted = dragCategoryIntoFolder(dest_id, (LLInventoryCategory*)linked_category, drop, tooltip_msg, true);
                 }
             }
             else
             {
-                accepted = dragItemIntoFolder(dest_id, inv_item, drop, tooltip_msg, TRUE);
+                accepted = dragItemIntoFolder(dest_id, inv_item, drop, tooltip_msg, true);
             }
             if (accepted && drop && inv_item)
             {
@@ -3188,12 +3218,12 @@ BOOL LLInventoryGallery::baseHandleDragAndDrop(LLUUID dest_id, BOOL drop,
         case DAD_CATEGORY:
             if (LLFriendCardsManager::instance().isAnyFriendCategory(dest_id))
             {
-                accepted = FALSE;
+                accepted = false;
             }
             else
             {
                 LLInventoryCategory* cat_ptr = (LLInventoryCategory*)cargo_data;
-                accepted = dragCategoryIntoFolder(dest_id, cat_ptr, drop, tooltip_msg, FALSE);
+                accepted = dragCategoryIntoFolder(dest_id, cat_ptr, drop, tooltip_msg, false);
                 if (accepted && drop)
                 {
                     mItemsToSelect.push_back(cat_ptr->getUUID());
@@ -3219,23 +3249,23 @@ BOOL LLInventoryGallery::baseHandleDragAndDrop(LLUUID dest_id, BOOL drop,
 }
 
 // copy of LLFolderBridge::dragItemIntoFolder
-BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop, std::string& tooltip_msg, BOOL user_confirm)
+bool dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, bool drop, std::string& tooltip_msg, bool user_confirm)
 {
     LLViewerInventoryCategory * cat = gInventory.getCategory(folder_id);
     if (!cat)
     {
-        return FALSE;
+        return false;
     }
     LLInventoryModel* model = &gInventory;
 
-    if (!model || !inv_item) return FALSE;
+    if (!model || !inv_item) return false;
 
     // cannot drag into library
     if((gInventory.getRootFolderID() != folder_id) && !model->isObjectDescendentOf(folder_id, gInventory.getRootFolderID()))
     {
-        return FALSE;
+        return false;
     }
-    if (!isAgentAvatarValid()) return FALSE;
+    if (!isAgentAvatarValid()) return false;
 
     const LLUUID &current_outfit_id = model->findCategoryUUIDForType(LLFolderType::FT_CURRENT_OUTFIT);
     const LLUUID &favorites_id = model->findCategoryUUIDForType(LLFolderType::FT_FAVORITE);
@@ -3243,29 +3273,29 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
     const LLUUID &marketplacelistings_id = model->findCategoryUUIDForType(LLFolderType::FT_MARKETPLACE_LISTINGS);
     const LLUUID &my_outifts_id = model->findCategoryUUIDForType(LLFolderType::FT_MY_OUTFITS);
 
-    const BOOL move_is_into_current_outfit = (folder_id == current_outfit_id);
-    const BOOL move_is_into_favorites = (folder_id == favorites_id);
-    const BOOL move_is_into_my_outfits = (folder_id == my_outifts_id) || model->isObjectDescendentOf(folder_id, my_outifts_id);
-    const BOOL move_is_into_outfit = move_is_into_my_outfits || (cat && cat->getPreferredType()==LLFolderType::FT_OUTFIT);
-    const BOOL move_is_into_landmarks = (folder_id == landmarks_id) || model->isObjectDescendentOf(folder_id, landmarks_id);
-    const BOOL move_is_into_marketplacelistings = model->isObjectDescendentOf(folder_id, marketplacelistings_id);
-    const BOOL move_is_from_marketplacelistings = model->isObjectDescendentOf(inv_item->getUUID(), marketplacelistings_id);
+    const bool move_is_into_current_outfit = (folder_id == current_outfit_id);
+    const bool move_is_into_favorites = (folder_id == favorites_id);
+    const bool move_is_into_my_outfits = (folder_id == my_outifts_id) || model->isObjectDescendentOf(folder_id, my_outifts_id);
+    const bool move_is_into_outfit = move_is_into_my_outfits || (cat && cat->getPreferredType()==LLFolderType::FT_OUTFIT);
+    const bool move_is_into_landmarks = (folder_id == landmarks_id) || model->isObjectDescendentOf(folder_id, landmarks_id);
+    const bool move_is_into_marketplacelistings = model->isObjectDescendentOf(folder_id, marketplacelistings_id);
+    const bool move_is_from_marketplacelistings = model->isObjectDescendentOf(inv_item->getUUID(), marketplacelistings_id);
 
     LLToolDragAndDrop::ESource source = LLToolDragAndDrop::getInstance()->getSource();
-    BOOL accept = FALSE;
+    bool accept = false;
     LLViewerObject* object = NULL;
     if(LLToolDragAndDrop::SOURCE_AGENT == source)
     {
         const LLUUID &trash_id = model->findCategoryUUIDForType(LLFolderType::FT_TRASH);
 
-        const BOOL move_is_into_trash = (folder_id == trash_id) || model->isObjectDescendentOf(folder_id, trash_id);
-        const BOOL move_is_outof_current_outfit = LLAppearanceMgr::instance().getIsInCOF(inv_item->getUUID());
+        const bool move_is_into_trash = (folder_id == trash_id) || model->isObjectDescendentOf(folder_id, trash_id);
+        const bool move_is_outof_current_outfit = LLAppearanceMgr::instance().getIsInCOF(inv_item->getUUID());
 
         //--------------------------------------------------------------------------------
         // Determine if item can be moved.
         //
 
-        BOOL is_movable = TRUE;
+        bool is_movable = true;
 
         switch (inv_item->getActualType())
         {
@@ -3278,7 +3308,7 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
         // Can't explicitly drag things out of the COF.
         if (move_is_outof_current_outfit)
         {
-            is_movable = FALSE;
+            is_movable = false;
         }
         if (move_is_into_trash)
         {
@@ -3296,20 +3326,20 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
 
         //
         //--------------------------------------------------------------------------------
-        
+
         //--------------------------------------------------------------------------------
         // Determine if item can be moved & dropped
         // Note: if user_confirm is false, we already went through those accept logic test and can skip them
 
-        accept = TRUE;
+        accept = true;
 
         if (user_confirm && !is_movable)
         {
-            accept = FALSE;
+            accept = false;
         }
         else if (user_confirm && (folder_id == inv_item->getParentUUID()) && !move_is_into_favorites)
         {
-            accept = FALSE;
+            accept = false;
         }
         else if (user_confirm && (move_is_into_current_outfit || move_is_into_outfit))
         {
@@ -3322,8 +3352,8 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
         else if (user_confirm && move_is_into_marketplacelistings)
         {
             //disable dropping in or out of marketplace for now
-            return FALSE;
-            
+            return false;
+
             /*const LLViewerInventoryCategory * master_folder = model->getFirstDescendantOf(marketplacelistings_id, folder_id);
             LLViewerInventoryCategory * dest_folder = cat;
             accept = can_move_item_to_marketplace(master_folder, dest_folder, inv_item, tooltip_msg, LLToolDragAndDrop::instance().getCargoCount() - LLToolDragAndDrop::instance().getCargoIndex());*/
@@ -3335,8 +3365,9 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
             LLViewerInventoryCategory * dest_folder = cat;
             accept = dest_folder->acceptItem(inv_item);
         }
-        
-        LLInventoryPanel* active_panel = LLInventoryPanel::getActiveInventoryPanel(FALSE);
+
+        LLInventoryPanel* active_panel = LLInventoryPanel::getActiveInventoryPanel(false);
+
 
         if (accept && drop)
         {
@@ -3357,7 +3388,7 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
             if (user_confirm && (move_is_from_marketplacelistings || move_is_into_marketplacelistings))
             {
                 //disable dropping in or out of marketplace for now
-                return FALSE;
+                return false;
             }
 
             //--------------------------------------------------------------------------------
@@ -3395,7 +3426,7 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
             else if (move_is_into_marketplacelistings)
             {
                 //move_item_to_marketplacelistings(inv_item, mUUID);
-                return FALSE;
+                return false;
             }
             // NORMAL or TRASH folder
             // (move the item, restamp if into trash)
@@ -3409,7 +3440,7 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
 
                 gInventory.changeItemParent((LLViewerInventoryItem*)inv_item, folder_id, move_is_into_trash);
             }
-            
+
             if (move_is_from_marketplacelistings)
             {
                 // If we move from an active (listed) listing, checks that it's still valid, if not, unlist
@@ -3426,7 +3457,7 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
                         }
                     });
                 }*/
-                return FALSE;
+                return false;
             }
 
             //
@@ -3442,7 +3473,7 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
         if (!object)
         {
             LL_INFOS() << "Object not found for drop." << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         // coming from a task. Need to figure out if the person can
@@ -3453,7 +3484,7 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
             && perm.allowTransferTo(gAgent.getID())))
             // || gAgent.isGodlike())
         {
-            accept = TRUE;
+            accept = true;
         }
         else if(object->permYouOwner())
         {
@@ -3461,26 +3492,26 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
             // inventory is owned by the agent, then the item can be
             // moved from the task to agent inventory.
             is_move = true;
-            accept = TRUE;
+            accept = true;
         }
 
         // Don't allow placing an original item into Current Outfit or an outfit folder
         // because they must contain only links to wearable items.
         if (move_is_into_current_outfit || move_is_into_outfit)
         {
-            accept = FALSE;
+            accept = false;
         }
         // Don't allow to move a single item to Favorites or Landmarks
         // if it is not a landmark or a link to a landmark.
         else if ((move_is_into_favorites || move_is_into_landmarks)
                  && !can_move_to_landmarks(inv_item))
         {
-            accept = FALSE;
+            accept = false;
         }
         else if (move_is_into_marketplacelistings)
         {
             tooltip_msg = LLTrans::getString("TooltipOutboxNotInInventory");
-            accept = FALSE;
+            accept = false;
         }
 
         if (accept && drop)
@@ -3511,12 +3542,12 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
         if (move_is_into_marketplacelistings)
         {
             tooltip_msg = LLTrans::getString("TooltipOutboxNotInInventory");
-            accept = FALSE;
+            accept = false;
         }
         else if ((inv_item->getActualType() == LLAssetType::AT_SETTINGS) && !LLEnvironment::instance().isInventoryEnabled())
         {
             tooltip_msg = LLTrans::getString("NoEnvironmentSettings");
-            accept = FALSE;
+            accept = false;
         }
         else
         {
@@ -3538,12 +3569,12 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
         LLViewerInventoryItem* item = (LLViewerInventoryItem*)inv_item;
         if(item && item->isFinished())
         {
-            accept = TRUE;
+            accept = true;
 
             if (move_is_into_marketplacelistings)
             {
                 tooltip_msg = LLTrans::getString("TooltipOutboxNotInInventory");
-                accept = FALSE;
+                accept = false;
             }
             else if (move_is_into_current_outfit || move_is_into_outfit)
             {
@@ -3605,41 +3636,40 @@ BOOL dragItemIntoFolder(LLUUID folder_id, LLInventoryItem* inv_item, BOOL drop,
 }
 
 // copy of LLFolderBridge::dragCategoryIntoFolder
-BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
-                            BOOL drop, std::string& tooltip_msg, BOOL is_link)
+bool dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
+                            bool drop, std::string& tooltip_msg, bool is_link)
 {
-    BOOL user_confirm = TRUE;
+    bool user_confirm = true;
     LLInventoryModel* model = &gInventory;
     LLViewerInventoryCategory * dest_cat = gInventory.getCategory(dest_id);
     if (!dest_cat)
     {
-        return FALSE;
+        return false;
     }
 
-    if (!inv_cat) return FALSE; // shouldn't happen, but in case item is incorrectly parented in which case inv_cat will be NULL
+    if (!inv_cat) return false; // shouldn't happen, but in case item is incorrectly parented in which case inv_cat will be NULL
 
-    if (!isAgentAvatarValid()) return FALSE;
+    if (!isAgentAvatarValid()) return false;
     // cannot drag into library
     if((gInventory.getRootFolderID() != dest_id) && !model->isObjectDescendentOf(dest_id, gInventory.getRootFolderID()))
     {
-        return FALSE;
+        return false;
     }
 
     const LLUUID &cat_id = inv_cat->getUUID();
     const LLUUID &current_outfit_id = model->findCategoryUUIDForType(LLFolderType::FT_CURRENT_OUTFIT);
     const LLUUID &marketplacelistings_id = model->findCategoryUUIDForType(LLFolderType::FT_MARKETPLACE_LISTINGS);
     //const LLUUID from_folder_uuid = inv_cat->getParentUUID();
-    
-    const BOOL move_is_into_current_outfit = (dest_id == current_outfit_id);
-    const BOOL move_is_into_marketplacelistings = model->isObjectDescendentOf(dest_id, marketplacelistings_id);
-    const BOOL move_is_from_marketplacelistings = model->isObjectDescendentOf(cat_id, marketplacelistings_id);
+    const bool move_is_into_current_outfit = (dest_id == current_outfit_id);
+    const bool move_is_into_marketplacelistings = model->isObjectDescendentOf(dest_id, marketplacelistings_id);
+    const bool move_is_from_marketplacelistings = model->isObjectDescendentOf(cat_id, marketplacelistings_id);
 
     // check to make sure source is agent inventory, and is represented there.
     LLToolDragAndDrop::ESource source = LLToolDragAndDrop::getInstance()->getSource();
-    const BOOL is_agent_inventory = (model->getCategory(cat_id) != NULL)
+    const bool is_agent_inventory = (model->getCategory(cat_id) != NULL)
         && (LLToolDragAndDrop::SOURCE_AGENT == source);
 
-    BOOL accept = FALSE;
+    bool accept = false;
 
     if (is_agent_inventory)
     {
@@ -3648,22 +3678,22 @@ BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
         const LLUUID &my_outifts_id = model->findCategoryUUIDForType(LLFolderType::FT_MY_OUTFITS);
         const LLUUID &lost_and_found_id = model->findCategoryUUIDForType(LLFolderType::FT_LOST_AND_FOUND);
 
-        const BOOL move_is_into_trash = (dest_id == trash_id) || model->isObjectDescendentOf(dest_id, trash_id);
-        const BOOL move_is_into_my_outfits = (dest_id == my_outifts_id) || model->isObjectDescendentOf(dest_id, my_outifts_id);
-        const BOOL move_is_into_outfit = move_is_into_my_outfits || (dest_cat && dest_cat->getPreferredType()==LLFolderType::FT_OUTFIT);
-        const BOOL move_is_into_current_outfit = (dest_cat && dest_cat->getPreferredType()==LLFolderType::FT_CURRENT_OUTFIT);
-        const BOOL move_is_into_landmarks = (dest_id == landmarks_id) || model->isObjectDescendentOf(dest_id, landmarks_id);
-        const BOOL move_is_into_lost_and_found = model->isObjectDescendentOf(dest_id, lost_and_found_id);
+        const bool move_is_into_trash = (dest_id == trash_id) || model->isObjectDescendentOf(dest_id, trash_id);
+        const bool move_is_into_my_outfits = (dest_id == my_outifts_id) || model->isObjectDescendentOf(dest_id, my_outifts_id);
+        const bool move_is_into_outfit = move_is_into_my_outfits || (dest_cat && dest_cat->getPreferredType()==LLFolderType::FT_OUTFIT);
+        const bool move_is_into_current_outfit = (dest_cat && dest_cat->getPreferredType()==LLFolderType::FT_CURRENT_OUTFIT);
+        const bool move_is_into_landmarks = (dest_id == landmarks_id) || model->isObjectDescendentOf(dest_id, landmarks_id);
+        const bool move_is_into_lost_and_found = model->isObjectDescendentOf(dest_id, lost_and_found_id);
 
         //--------------------------------------------------------------------------------
         // Determine if folder can be moved.
         //
 
-        BOOL is_movable = TRUE;
+        bool is_movable = true;
 
         if (is_movable && (marketplacelistings_id == cat_id))
         {
-            is_movable = FALSE;
+            is_movable = false;
             tooltip_msg = LLTrans::getString("TooltipOutboxCannotMoveRoot");
         }
         if (is_movable && move_is_from_marketplacelistings)
@@ -3671,22 +3701,22 @@ BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
         {
             // If the incoming folder is listed and active (and is therefore either the listing or the version folder),
             // then moving is *not* allowed
-            is_movable = FALSE;
+            is_movable = false;
             tooltip_msg = LLTrans::getString("TooltipOutboxDragActive");
         }
         if (is_movable && (dest_id == cat_id))
         {
-            is_movable = FALSE;
+            is_movable = false;
             tooltip_msg = LLTrans::getString("TooltipDragOntoSelf");
         }
         if (is_movable && (model->isObjectDescendentOf(dest_id, cat_id)))
         {
-            is_movable = FALSE;
+            is_movable = false;
             tooltip_msg = LLTrans::getString("TooltipDragOntoOwnChild");
         }
         if (is_movable && LLFolderType::lookupIsProtectedType(inv_cat->getPreferredType()))
         {
-            is_movable = FALSE;
+            is_movable = false;
             // tooltip?
         }
 
@@ -3721,36 +3751,36 @@ BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
         }
         if(is_movable && move_is_into_current_outfit && is_link)
         {
-            is_movable = FALSE;
+            is_movable = false;
         }
         if (is_movable && move_is_into_lost_and_found)
         {
-            is_movable = FALSE;
+            is_movable = false;
         }
         if (is_movable && (dest_id == model->findCategoryUUIDForType(LLFolderType::FT_FAVORITE)))
         {
-            is_movable = FALSE;
+            is_movable = false;
             // tooltip?
         }
         if (is_movable && (dest_cat->getPreferredType() == LLFolderType::FT_MARKETPLACE_STOCK))
         {
             // One cannot move a folder into a stock folder
-            is_movable = FALSE;
+            is_movable = false;
             // tooltip?
         }
-        
+
         LLInventoryModel::cat_array_t descendent_categories;
         LLInventoryModel::item_array_t descendent_items;
         if (is_movable)
         {
-            model->collectDescendents(cat_id, descendent_categories, descendent_items, FALSE);
+            model->collectDescendents(cat_id, descendent_categories, descendent_items, false);
             for (S32 i=0; i < descendent_categories.size(); ++i)
             {
                 LLInventoryCategory* category = descendent_categories[i];
                 if(LLFolderType::lookupIsProtectedType(category->getPreferredType()))
                 {
                     // Can't move "special folders" (e.g. Textures Folder).
-                    is_movable = FALSE;
+                    is_movable = false;
                     break;
                 }
             }
@@ -3771,7 +3801,7 @@ BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
             if (items.size() > max_items_to_wear)
             {
                 // Can't move 'large' folders into current outfit: MAINT-4086
-                is_movable = FALSE;
+                is_movable = false;
                 LLStringUtil::format_map_t args;
                 args["AMOUNT"] = llformat("%d", max_items_to_wear);
                 tooltip_msg = LLTrans::getString("TooltipTooManyWearables",args);
@@ -3784,7 +3814,7 @@ BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
                 LLInventoryItem* item = descendent_items[i];
                 if (get_is_item_worn(item->getUUID()))
                 {
-                    is_movable = FALSE;
+                    is_movable = false;
                     break; // It's generally movable, but not into the trash.
                 }
             }
@@ -3799,12 +3829,12 @@ BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
                 // We use getType() instead of getActua;Type() to allow links to landmarks and folders.
                 if (LLAssetType::AT_LANDMARK != item->getType() && LLAssetType::AT_CATEGORY != item->getType())
                 {
-                    is_movable = FALSE;
+                    is_movable = false;
                     break; // It's generally movable, but not into Landmarks.
                 }
             }
         }
-        
+
         if (is_movable && move_is_into_marketplacelistings)
         {
             const LLViewerInventoryCategory * master_folder = model->getFirstDescendantOf(marketplacelistings_id, dest_id);
@@ -3824,7 +3854,7 @@ BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
             if (user_confirm && (move_is_from_marketplacelistings || move_is_into_marketplacelistings))
             {
                 //disable dropping in or out of marketplace for now
-                return FALSE;
+                return false;
             }
             // Look for any gestures and deactivate them
             if (move_is_into_trash)
@@ -3852,7 +3882,7 @@ BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
                 inv_cat->getPreferredType() == LLFolderType::FT_OUTFIT))
             {
                 // traverse category and add all contents to currently worn.
-                BOOL append = true;
+                bool append = true;
                 LLAppearanceMgr::instance().wearInventoryCategory(inv_cat, false, append);
             }
             else if (move_is_into_marketplacelistings)
@@ -3876,8 +3906,8 @@ BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
             if (move_is_from_marketplacelistings)
             {
                 //disable dropping in or out of marketplace for now
-                return FALSE;
-                
+                return false;
+
                 // If we are moving a folder at the listing folder level (i.e. its parent is the marketplace listings folder)
                 /*if (from_folder_uuid == marketplacelistings_id)
                 {
@@ -3915,7 +3945,7 @@ BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
         if (move_is_into_marketplacelistings)
         {
             tooltip_msg = LLTrans::getString("TooltipOutboxNotInInventory");
-            accept = FALSE;
+            accept = false;
         }
         else
         {
@@ -3927,7 +3957,7 @@ BOOL dragCategoryIntoFolder(LLUUID dest_id, LLInventoryCategory* inv_cat,
         if (move_is_into_marketplacelistings)
         {
             tooltip_msg = LLTrans::getString("TooltipOutboxNotInInventory");
-            accept = FALSE;
+            accept = false;
         }
         else
         {
diff --git a/indra/newview/llinventorygallery.h b/indra/newview/llinventorygallery.h
index 51444d24b0..afc7bdc9f8 100644
--- a/indra/newview/llinventorygallery.h
+++ b/indra/newview/llinventorygallery.h
@@ -75,15 +75,15 @@ public:
     LLInventoryGallery(const LLInventoryGallery::Params& params = getDefaultParams());
     ~LLInventoryGallery();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
     void initGallery();
     void draw() override;
-    void onVisibilityChange(BOOL new_visibility) override;
-    BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop, EDragAndDropType cargo_type,
+    void onVisibilityChange(bool new_visibility) override;
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop, EDragAndDropType cargo_type,
                            void* cargo_data, EAcceptance* accept, std::string& tooltip_msg) override;
     void startDrag();
-    BOOL handleRightMouseDown(S32 x, S32 y, MASK mask) override;
-    BOOL handleKeyHere(KEY key, MASK mask) override;
+    bool handleRightMouseDown(S32 x, S32 y, MASK mask) override;
+    bool handleKeyHere(KEY key, MASK mask) override;
     void moveUp(MASK mask);
     void moveDown(MASK mask);
     void moveLeft(MASK mask);
@@ -153,19 +153,20 @@ public:
 
     // Copy & paste (LLEditMenuHandler)
     void    copy() override;
-    BOOL    canCopy() const override;
+    bool    canCopy() const override;
 
     void    cut() override;
-    BOOL    canCut() const override;
+    bool    canCut() const override;
 
     void paste() override;
-    BOOL canPaste() const override;
+    bool canPaste() const override;
 
     // Copy & paste & delete
     static void onDelete(const LLSD& notification, const LLSD& response, const selection_deque selected_ids);
     void deleteSelection();
     bool canDeleteSelection();
     void pasteAsLink();
+    void doCreate(const LLUUID& dest, const LLSD& userdata);
 
     void setSortOrder(U32 order, bool update = false);
     U32 getSortOrder() { return mSortOrder; };
@@ -174,7 +175,7 @@ public:
     void resetEditHandler();
     static bool isItemCopyable(const LLUUID & item_id);
 
-    BOOL baseHandleDragAndDrop(LLUUID dest_id, BOOL drop, EDragAndDropType cargo_type,
+    bool baseHandleDragAndDrop(LLUUID dest_id, bool drop, EDragAndDropType cargo_type,
                                void* cargo_data, EAcceptance* accept, std::string& tooltip_msg);
 
     void showContextMenu(LLUICtrl* ctrl, S32 x, S32 y, const LLUUID& item_id);
@@ -298,19 +299,19 @@ public:
     LLInventoryGalleryItem(const Params& p);
     virtual ~LLInventoryGalleryItem();
 
-    BOOL postBuild();
+    bool postBuild();
     void draw();
-    BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-    BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
-    BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    BOOL handleHover(S32 x, S32 y, MASK mask);
-    BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    bool handleMouseDown(S32 x, S32 y, MASK mask);
+    bool handleRightMouseDown(S32 x, S32 y, MASK mask);
+    bool handleDoubleClick(S32 x, S32 y, MASK mask);
+    bool handleMouseUp(S32 x, S32 y, MASK mask);
+    bool handleHover(S32 x, S32 y, MASK mask);
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                    EDragAndDropType cargo_type,
                                    void* cargo_data,
                                    EAcceptance* accept,
                                    std::string& tooltip_msg);
-    BOOL handleKeyHere(KEY key, MASK mask);
+    bool handleKeyHere(KEY key, MASK mask);
 
     void onFocusLost();
     void onFocusReceived();
diff --git a/indra/newview/llinventorygallerymenu.cpp b/indra/newview/llinventorygallerymenu.cpp
index 5f5474b359..dbf4821ca1 100644
--- a/indra/newview/llinventorygallerymenu.cpp
+++ b/indra/newview/llinventorygallerymenu.cpp
@@ -32,9 +32,11 @@
 #include "llappearancemgr.h"
 #include "llavataractions.h"
 #include "llclipboard.h"
+#include "llenvironment.h"
 #include "llfloaterreg.h"
 #include "llfloatersidepanelcontainer.h"
 #include "llfloaterworldmap.h"
+#include "llfriendcard.h"
 #include "llinventorybridge.h"
 #include "llinventoryfunctions.h"
 #include "llinventorymodel.h"
@@ -48,6 +50,41 @@
 #include "llviewerwindow.h"
 #include "llvoavatarself.h"
 
+
+void modify_outfit(bool append, const LLUUID& cat_id, LLInventoryModel* model)
+{
+    LLViewerInventoryCategory* cat = model->getCategory(cat_id);
+    if (!cat) return;
+
+    // checking amount of items to wear
+    static LLCachedControl<U32> max_items(gSavedSettings, "WearFolderLimit", 125);
+    LLInventoryModel::cat_array_t cats;
+    LLInventoryModel::item_array_t items;
+    LLFindWearablesEx not_worn(/*is_worn=*/ false, /*include_body_parts=*/ false);
+    model->collectDescendentsIf(cat_id,
+                                    cats,
+                                    items,
+                                    LLInventoryModel::EXCLUDE_TRASH,
+                                    not_worn);
+
+    if (items.size() > max_items())
+    {
+        LLSD args;
+        args["AMOUNT"] = llformat("%u", max_items());
+        LLNotificationsUtil::add("TooManyWearables", args);
+        return;
+    }
+    if (model->isObjectDescendentOf(cat_id, gInventory.getRootFolderID()))
+    {
+        LLAppearanceMgr::instance().wearInventoryCategory(cat, false, append);
+    }
+    else
+    {
+        // Library, we need to copy content first
+        LLAppearanceMgr::instance().wearInventoryCategory(cat, true, append);
+    }
+}
+
 LLContextMenu* LLInventoryGalleryContextMenu::createMenu()
 {
     LLUICtrl::CommitCallbackRegistry::ScopedRegistrar registrar;
@@ -57,12 +94,35 @@ LLContextMenu* LLInventoryGalleryContextMenu::createMenu()
     registrar.add("Inventory.FileUploadLocation", boost::bind(&LLInventoryGalleryContextMenu::fileUploadLocation, this, _2));
     registrar.add("Inventory.EmptyTrash", boost::bind(&LLInventoryModel::emptyFolderType, &gInventory, "ConfirmEmptyTrash", LLFolderType::FT_TRASH));
     registrar.add("Inventory.EmptyLostAndFound", boost::bind(&LLInventoryModel::emptyFolderType, &gInventory, "ConfirmEmptyLostAndFound", LLFolderType::FT_LOST_AND_FOUND));
+    registrar.add("Inventory.DoCreate", [this](LLUICtrl*, const LLSD& data)
+                          {
+                              if (mRootFolder)
+                              {
+                                  mGallery->doCreate(mGallery->getRootFolder(), data);
+                              }
+                              else
+                              {
+                                  mGallery->doCreate(mUUIDs.front(), data);
+                              }
+                          });
 
     std::set<LLUUID> uuids(mUUIDs.begin(), mUUIDs.end());
     registrar.add("Inventory.Share", boost::bind(&LLAvatarActions::shareWithAvatars, uuids, gFloaterView->getParentFloater(mGallery)));
 
     enable_registrar.add("Inventory.CanSetUploadLocation", boost::bind(&LLInventoryGalleryContextMenu::canSetUploadLocation, this, _2));
-    
+
+    enable_registrar.add("Inventory.EnvironmentEnabled", [](LLUICtrl*, const LLSD&)
+                         {
+                             return LLEnvironment::instance().isInventoryEnabled();
+                         });
+    enable_registrar.add("Inventory.MaterialsEnabled", [](LLUICtrl*, const LLSD&)
+                         {
+                             std::string agent_url = gAgent.getRegionCapability("UpdateMaterialAgentInventory");
+                             std::string task_url = gAgent.getRegionCapability("UpdateMaterialTaskInventory");
+
+                             return (!agent_url.empty() && !task_url.empty());
+                         });
+
     LLContextMenu* menu = createFromFile("menu_gallery_inventory.xml");
 
     updateMenuItemsVisibility(menu);
@@ -138,7 +198,11 @@ void LLInventoryGalleryContextMenu::doToSelected(const LLSD& userdata)
     }
     else if ("thumbnail" == action)
     {
-        LLSD data(mUUIDs.front());
+        LLSD data;
+        for (const LLUUID& id : mUUIDs)
+        {
+            data.append(id);
+        }
         LLFloaterReg::showInstance("change_item_thumbnail", data);
     }
     else if ("cut" == action)
@@ -186,6 +250,22 @@ void LLInventoryGalleryContextMenu::doToSelected(const LLSD& userdata)
     {
         ungroup_folder_items(mUUIDs.front());
     }
+    else if ("replaceoutfit" == action)
+    {
+        modify_outfit(false, mUUIDs.front(), &gInventory);
+    }
+    else if ("addtooutfit" == action)
+    {
+        modify_outfit(true, mUUIDs.front(), &gInventory);
+    }
+    else if ("removefromoutfit" == action)
+    {
+        LLViewerInventoryCategory* cat = gInventory.getCategory(mUUIDs.front());
+        if (cat)
+        {
+            LLAppearanceMgr::instance().takeOffOutfit(cat->getLinkedUUID());
+        }
+    }
     else if ("take_off" == action || "detach" == action)
     {
         for (LLUUID& selected_id : mUUIDs)
@@ -295,6 +375,54 @@ void LLInventoryGalleryContextMenu::doToSelected(const LLSD& userdata)
             preview_texture->saveAs();
         }
     }
+    else if (("copy_to_marketplace_listings" == action)
+             || ("move_to_marketplace_listings" == action))
+    {
+        LLViewerInventoryItem* itemp = gInventory.getItem(mUUIDs.front());
+        bool copy_operation = "copy_to_marketplace_listings" == action;
+        bool can_copy = itemp ? itemp->getPermissions().allowOperationBy(PERM_COPY, gAgent.getID(), gAgent.getGroupID()) : false;
+
+
+        if (can_copy)
+        {
+            const LLUUID& marketplacelistings_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_MARKETPLACE_LISTINGS);
+            if (itemp)
+            {
+                move_item_to_marketplacelistings(itemp, marketplacelistings_id, copy_operation);
+            }
+        }
+        else
+        {
+            uuid_vec_t lamdba_list = mUUIDs;
+            LLNotificationsUtil::add(
+                "ConfirmCopyToMarketplace",
+                LLSD(),
+                LLSD(),
+                [lamdba_list](const LLSD& notification, const LLSD& response)
+                {
+                    S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
+                    // option == 0  Move no copy item(s)
+                    // option == 1  Don't move no copy item(s) (leave them behind)
+                    bool copy_and_move = option == 0;
+                    const LLUUID& marketplacelistings_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_MARKETPLACE_LISTINGS);
+
+                    // main inventory only allows one item?
+                    LLViewerInventoryItem* itemp = gInventory.getItem(lamdba_list.front());
+                    if (itemp)
+                    {
+                        if (itemp->getPermissions().allowOperationBy(PERM_COPY, gAgent.getID(), gAgent.getGroupID()))
+                        {
+                            move_item_to_marketplacelistings(itemp, marketplacelistings_id, true);
+                        }
+                        else if (copy_and_move)
+                        {
+                            move_item_to_marketplacelistings(itemp, marketplacelistings_id, false);
+                        }
+                    }
+                }
+            );
+        }
+    }
 }
 
 void LLInventoryGalleryContextMenu::rename(const LLUUID& item_id)
@@ -321,7 +449,7 @@ void LLInventoryGalleryContextMenu::onRename(const LLSD& notification, const LLS
     if (!new_name.empty())
     {
         LLUUID id = notification["payload"]["id"].asUUID();
-        
+
         LLViewerInventoryCategory* cat = gInventory.getCategory(id);
         if(cat && (cat->getName() != new_name))
         {
@@ -330,7 +458,7 @@ void LLInventoryGalleryContextMenu::onRename(const LLSD& notification, const LLS
             update_inventory_category(cat->getUUID(),updates, NULL);
             return;
         }
-        
+
         LLViewerInventoryItem* item = gInventory.getItem(id);
         if(item && (item->getName() != new_name))
         {
@@ -379,15 +507,65 @@ bool LLInventoryGalleryContextMenu::canSetUploadLocation(const LLSD& userdata)
 bool is_inbox_folder(LLUUID item_id)
 {
     const LLUUID inbox_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_INBOX);
-    
+
     if (inbox_id.isNull())
     {
         return false;
     }
-    
+
     return gInventory.isObjectDescendentOf(item_id, inbox_id);
 }
 
+bool can_list_on_marketplace(const LLUUID &id)
+{
+    const LLInventoryObject* obj = gInventory.getObject(id);
+    bool can_list = (obj != NULL);
+
+    if (can_list)
+    {
+        const LLUUID& object_id = obj->getLinkedUUID();
+        can_list = object_id.notNull();
+
+        if (can_list)
+        {
+            std::string error_msg;
+            const LLUUID& marketplacelistings_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_MARKETPLACE_LISTINGS);
+            if (marketplacelistings_id.notNull())
+            {
+                LLViewerInventoryCategory* master_folder = gInventory.getCategory(marketplacelistings_id);
+                LLInventoryCategory* cat = gInventory.getCategory(id);
+                if (cat)
+                {
+                    can_list = can_move_folder_to_marketplace(master_folder, master_folder, cat, error_msg);
+                }
+                else
+                {
+                    LLInventoryItem* item = gInventory.getItem(id);
+                    can_list = (item ? can_move_item_to_marketplace(master_folder, master_folder, item, error_msg) : false);
+                }
+            }
+            else
+            {
+                can_list = false;
+            }
+        }
+    }
+
+    return can_list;
+}
+
+bool check_folder_for_contents_of_type(const LLUUID &id, LLInventoryModel* model, LLInventoryCollectFunctor& is_type)
+{
+    LLInventoryModel::cat_array_t cat_array;
+    LLInventoryModel::item_array_t item_array;
+    model->collectDescendentsIf(id,
+                                cat_array,
+                                item_array,
+                                LLInventoryModel::EXCLUDE_TRASH,
+                                is_type);
+    return item_array.size() > 0;
+}
+
 void LLInventoryGalleryContextMenu::updateMenuItemsVisibility(LLContextMenu* menu)
 {
     LLUUID selected_id = mUUIDs.front();
@@ -409,6 +587,7 @@ void LLInventoryGalleryContextMenu::updateMenuItemsVisibility(LLContextMenu* men
     bool is_in_trash = gInventory.isObjectDescendentOf(selected_id, gInventory.findCategoryUUIDForType(LLFolderType::FT_TRASH));
     bool is_lost_and_found = (selected_id == gInventory.findCategoryUUIDForType(LLFolderType::FT_LOST_AND_FOUND));
     bool is_outfits= (selected_id == gInventory.findCategoryUUIDForType(LLFolderType::FT_MY_OUTFITS));
+    bool is_in_favorites = gInventory.isObjectDescendentOf(selected_id, gInventory.findCategoryUUIDForType(LLFolderType::FT_FAVORITE));
     //bool is_favorites= (selected_id == gInventory.findCategoryUUIDForType(LLFolderType::FT_FAVORITE));
 
     bool is_system_folder = false;
@@ -456,6 +635,49 @@ void LLInventoryGalleryContextMenu::updateMenuItemsVisibility(LLContextMenu* men
             items.push_back(std::string("open_in_new_window"));
             items.push_back(std::string("Open Folder Separator"));
         }
+
+        // wearables related functionality for folders.
+        LLFindWearables is_wearable;
+        LLIsType is_object(LLAssetType::AT_OBJECT);
+        LLIsType is_gesture(LLAssetType::AT_GESTURE);
+
+        if (check_folder_for_contents_of_type(selected_id, &gInventory, is_wearable)
+            || check_folder_for_contents_of_type(selected_id, &gInventory, is_object)
+            || check_folder_for_contents_of_type(selected_id, &gInventory, is_gesture))
+        {
+            // Only enable add/replace outfit for non-system folders.
+            if (!is_system_folder)
+            {
+                // Adding an outfit onto another (versus replacing) doesn't make sense.
+                if (folder_type != LLFolderType::FT_OUTFIT)
+                {
+                    items.push_back(std::string("Add To Outfit"));
+                    if (!LLAppearanceMgr::instance().getCanAddToCOF(selected_id))
+                    {
+                        disabled_items.push_back(std::string("Add To Outfit"));
+                    }
+                }
+
+                items.push_back(std::string("Replace Outfit"));
+                if (!LLAppearanceMgr::instance().getCanReplaceCOF(selected_id))
+                {
+                    disabled_items.push_back(std::string("Replace Outfit"));
+                }
+            }
+            if (is_agent_inventory)
+            {
+                items.push_back(std::string("Folder Wearables Separator"));
+                // Note: If user tries to unwear "My Inventory", it's going to deactivate everything including gestures
+                // Might be safer to disable this for "My Inventory"
+                items.push_back(std::string("Remove From Outfit"));
+                if (folder_type != LLFolderType::FT_ROOT_INVENTORY // Unless COF is empty, whih shouldn't be, warrantied to have worn items
+                    && !LLAppearanceMgr::getCanRemoveFromCOF(selected_id)) // expensive from root!
+                {
+                    disabled_items.push_back(std::string("Remove From Outfit"));
+                }
+            }
+            items.push_back(std::string("Outfit Separator"));
+        }
     }
     else
     {
@@ -503,11 +725,30 @@ void LLInventoryGalleryContextMenu::updateMenuItemsVisibility(LLContextMenu* men
     }
     else
     {
+        if (is_agent_inventory && !is_inbox && !is_cof && !is_in_favorites && !is_outfits)
+        {
+            LLViewerInventoryCategory* category = gInventory.getCategory(selected_id);
+            if (!category || !LLFriendCardsManager::instance().isCategoryInFriendFolder(category))
+            {
+                items.push_back(std::string("New Folder"));
+            }
+
+            items.push_back(std::string("create_new"));
+            items.push_back(std::string("New Script"));
+            items.push_back(std::string("New Note"));
+            items.push_back(std::string("New Gesture"));
+            items.push_back(std::string("New Material"));
+            items.push_back(std::string("New Clothes"));
+            items.push_back(std::string("New Body Parts"));
+            items.push_back(std::string("New Settings"));
+        }
+
         if(can_share_item(selected_id))
         {
             items.push_back(std::string("Share"));
         }
-        if (LLClipboard::instance().hasContents() && is_agent_inventory && !is_cof && !is_inbox_folder(selected_id))
+
+        if (LLClipboard::instance().hasContents() && is_agent_inventory && !is_cof && !is_inbox)
         {
             items.push_back(std::string("Paste"));
 
@@ -519,7 +760,7 @@ void LLInventoryGalleryContextMenu::updateMenuItemsVisibility(LLContextMenu* men
         }
         if (is_folder && is_agent_inventory)
         {
-            if (!is_cof && (folder_type != LLFolderType::FT_OUTFIT) && !is_outfits && !is_inbox_folder(selected_id))
+            if (!is_cof && (folder_type != LLFolderType::FT_OUTFIT) && !is_outfits && !is_inbox)
             {
                 if (!gInventory.isObjectDescendentOf(selected_id, gInventory.findCategoryUUIDForType(LLFolderType::FT_CALLINGCARD)) && !isRootFolder())
                 {
@@ -625,7 +866,7 @@ void LLInventoryGalleryContextMenu::updateMenuItemsVisibility(LLContextMenu* men
                 disabled_items.push_back(std::string("Open"));
                 disabled_items.push_back(std::string("Open Original"));
             }
-            
+
             if(LLAssetType::AT_GESTURE == obj->getType())
             {
                 items.push_back(std::string("Gesture Separator"));
@@ -715,6 +956,54 @@ void LLInventoryGalleryContextMenu::updateMenuItemsVisibility(LLContextMenu* men
 
             disabled_items.push_back(std::string("New Folder"));
             disabled_items.push_back(std::string("upload_def"));
+            disabled_items.push_back(std::string("create_new"));
+        }
+
+        if (is_agent_inventory && !mRootFolder)
+        {
+            items.push_back(std::string("New folder from selected"));
+            items.push_back(std::string("Subfolder Separator"));
+            if (!is_only_items_selected(mUUIDs) && !is_only_cats_selected(mUUIDs))
+            {
+                disabled_items.push_back(std::string("New folder from selected"));
+            }
+        }
+
+        // Marketplace
+        bool can_list = false;
+        const LLUUID marketplacelistings_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_MARKETPLACE_LISTINGS);
+        if (marketplacelistings_id.notNull() && !is_inbox && !obj->getIsLinkType())
+        {
+            if (is_folder)
+            {
+                LLViewerInventoryCategory* cat = gInventory.getCategory(selected_id);
+                if (cat
+                    && !LLFolderType::lookupIsProtectedType(cat->getPreferredType())
+                    && gInventory.isObjectDescendentOf(selected_id, gInventory.getRootFolderID()))
+                {
+                    can_list = true;
+                }
+            }
+            else if (selected_item
+                     && selected_item->getPermissions().allowOperationBy(PERM_TRANSFER, gAgent.getID())
+                     && selected_item->getPermissions().getOwner() != ALEXANDRIA_LINDEN_ID
+                     && LLAssetType::AT_CALLINGCARD != selected_item->getType())
+            {
+                can_list = true;
+            }
+        }
+
+        if (can_list)
+        {
+            items.push_back(std::string("Marketplace Separator"));
+            items.push_back(std::string("Marketplace Copy"));
+            items.push_back(std::string("Marketplace Move"));
+
+            if (!can_list_on_marketplace(selected_id))
+            {
+                disabled_items.push_back(std::string("Marketplace Copy"));
+                disabled_items.push_back(std::string("Marketplace Move"));
+            }
         }
     }
 
diff --git a/indra/newview/llinventoryicon.cpp b/indra/newview/llinventoryicon.cpp
index a8e59b61c5..94b8c4bebf 100644
--- a/indra/newview/llinventoryicon.cpp
+++ b/indra/newview/llinventoryicon.cpp
@@ -110,7 +110,7 @@ LLIconDictionary::LLIconDictionary()
 LLUIImagePtr LLInventoryIcon::getIcon(LLAssetType::EType asset_type,
                                       LLInventoryType::EType inventory_type,
                                       U32 misc_flag,
-                                      BOOL item_is_multi)
+                                      bool item_is_multi)
 {
     const std::string& icon_name = getIconName(asset_type, inventory_type, misc_flag, item_is_multi);
     return LLUI::getUIImage(icon_name);
@@ -124,7 +124,7 @@ LLUIImagePtr LLInventoryIcon::getIcon(LLInventoryType::EIconName idx)
 const std::string& LLInventoryIcon::getIconName(LLAssetType::EType asset_type,
                                                 LLInventoryType::EType inventory_type,
                                                 U32 misc_flag,
-                                                BOOL item_is_multi)
+                                                bool item_is_multi)
 {
     LLInventoryType::EIconName idx = LLInventoryType::ICONNAME_OBJECT;
     if (item_is_multi)
diff --git a/indra/newview/llinventoryicon.h b/indra/newview/llinventoryicon.h
index ca17956252..32e2d8b29d 100644
--- a/indra/newview/llinventoryicon.h
+++ b/indra/newview/llinventoryicon.h
@@ -37,13 +37,13 @@ public:
     static const std::string& getIconName(LLAssetType::EType asset_type,
                                           LLInventoryType::EType inventory_type = LLInventoryType::IT_NONE,
                                           U32 misc_flag = 0, // different meanings depending on item type
-                                          BOOL item_is_multi = FALSE);
+                                          bool item_is_multi = false);
     static const std::string& getIconName(LLInventoryType::EIconName idx);
 
     static LLPointer<class LLUIImage> getIcon(LLAssetType::EType asset_type,
                                 LLInventoryType::EType inventory_type = LLInventoryType::IT_NONE,
                                 U32 misc_flag = 0, // different meanings depending on item type
-                                BOOL item_is_multi = FALSE);
+                                bool item_is_multi = false);
     static LLPointer<class LLUIImage> getIcon(LLInventoryType::EIconName idx);
 
 protected:
diff --git a/indra/newview/llinventorylistitem.cpp b/indra/newview/llinventorylistitem.cpp
index af5319587f..e210975a5a 100644
--- a/indra/newview/llinventorylistitem.cpp
+++ b/indra/newview/llinventorylistitem.cpp
@@ -158,12 +158,12 @@ void LLPanelInventoryListItemBase::setShowWidget(LLUICtrl* ctrl, bool show)
     ctrl->setEnabled(show);
 }
 
-BOOL LLPanelInventoryListItemBase::postBuild()
+bool LLPanelInventoryListItemBase::postBuild()
 {
     LLViewerInventoryItem* inv_item = getItem();
     if (inv_item)
     {
-        mIconImage = LLInventoryIcon::getIcon(inv_item->getType(), inv_item->getInventoryType(), inv_item->getFlags(), FALSE);
+        mIconImage = LLInventoryIcon::getIcon(inv_item->getType(), inv_item->getInventoryType(), inv_item->getFlags(), false);
         updateItem(inv_item->getName());
     }
 
@@ -172,7 +172,7 @@ BOOL LLPanelInventoryListItemBase::postBuild()
     setWidgetsVisible(false);
     reshapeWidgets();
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelInventoryListItemBase::setValue(const LLSD& value)
@@ -182,7 +182,7 @@ void LLPanelInventoryListItemBase::setValue(const LLSD& value)
     mSelected = value["selected"];
 }
 
-BOOL LLPanelInventoryListItemBase::handleHover(S32 x, S32 y, MASK mask)
+bool LLPanelInventoryListItemBase::handleHover(S32 x, S32 y, MASK mask)
 {
     mHovered = true;
     return LLPanel::handleHover(x, y, mask);
@@ -399,13 +399,13 @@ void LLPanelInventoryListItemBase::setTitle(const std::string& title,
         highlit_text);
 }
 
-BOOL LLPanelInventoryListItemBase::handleToolTip( S32 x, S32 y, MASK mask)
+bool LLPanelInventoryListItemBase::handleToolTip( S32 x, S32 y, MASK mask)
 {
     LLRect text_box_rect = mTitleCtrl->getRect();
     if (text_box_rect.pointInRect(x, y) &&
         mTitleCtrl->getTextPixelWidth() <= text_box_rect.getWidth())
     {
-        return FALSE;
+        return false;
     }
     return LLPanel::handleToolTip(x, y, mask);
 }
diff --git a/indra/newview/llinventorylistitem.h b/indra/newview/llinventorylistitem.h
index 0d10e26633..21540a380b 100644
--- a/indra/newview/llinventorylistitem.h
+++ b/indra/newview/llinventorylistitem.h
@@ -117,7 +117,7 @@ public:
     /**
      * Inheritors need to call base implementation of postBuild()
      */
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     /**
      * Handles item selection
@@ -130,7 +130,7 @@ public:
     /*virtual*/ S32  notify(const LLSD& info);
 
     /* Highlights item */
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
     /* Removes item highlight */
     /*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask);
 
@@ -153,7 +153,7 @@ public:
     LLViewerInventoryItem* getItem() const;
 
     void setSeparatorVisible(bool visible) { mSeparatorVisible = visible; }
-    void resetHighlight() { mHovered = FALSE; }
+    void resetHighlight() { mHovered = false; }
 
     virtual ~LLPanelInventoryListItemBase(){}
 
@@ -194,7 +194,7 @@ protected:
     /**
      * Show tool tip if item name text size > panel size
      */
-    virtual BOOL handleToolTip( S32 x, S32 y, MASK mask);
+    virtual bool handleToolTip( S32 x, S32 y, MASK mask);
 
     const LLUUID mInventoryItemUUID;
     bool mHovered;
diff --git a/indra/newview/llinventorymodel.cpp b/indra/newview/llinventorymodel.cpp
index c6192ddf1a..53ea02983a 100644
--- a/indra/newview/llinventorymodel.cpp
+++ b/indra/newview/llinventorymodel.cpp
@@ -79,7 +79,7 @@
 // Increment this if the inventory contents change in a non-backwards-compatible way.
 // For viewer 2, the addition of link items makes a pre-viewer-2 cache incorrect.
 const S32 LLInventoryModel::sCurrentInvCacheVersion = 3;
-BOOL LLInventoryModel::sFirstTimeInViewer2 = TRUE;
+bool LLInventoryModel::sFirstTimeInViewer2 = true;
 
 S32 LLInventoryModel::sPendingSystemFolders = 0;
 
@@ -87,7 +87,7 @@ S32 LLInventoryModel::sPendingSystemFolders = 0;
 /// Local function declarations, constants, enums, and typedefs
 ///----------------------------------------------------------------------------
 
-//BOOL decompress_file(const char* src_filename, const char* dst_filename);
+//bool decompress_file(const char* src_filename, const char* dst_filename);
 static const char PRODUCTION_CACHE_FORMAT_STRING[] = "%s.inv.llsd";
 static const char GRID_CACHE_FORMAT_STRING[] = "%s.%s.inv.llsd";
 static const char * const LOG_INV("Inventory");
@@ -316,7 +316,7 @@ public:
         if (LLInventoryState::sWearNewClothing)
         {
             LLInventoryState::sWearNewClothingTransactionID = tid;
-            LLInventoryState::sWearNewClothing = FALSE;
+            LLInventoryState::sWearNewClothing = false;
         }
 
         if (tid.notNull() && tid == LLInventoryState::sWearNewClothingTransactionID)
@@ -333,7 +333,7 @@ public:
 
         if (LLInventoryState::sWearNewClothing && wearable_ids.size() > 0)
         {
-            LLInventoryState::sWearNewClothing = FALSE;
+            LLInventoryState::sWearNewClothing = false;
 
             size_t count = wearable_ids.size();
             for (S32 i = 0; i < count; ++i)
@@ -441,7 +441,7 @@ LLInventoryModel::LLInventoryModel()
     mParentChildCategoryTree(),
     mParentChildItemTree(),
     mLastItem(NULL),
-    mIsNotifyObservers(FALSE),
+    mIsNotifyObservers(false),
     mModifyMask(LLInventoryObserver::ALL),
     mChangedItemIDs(),
     mBulkFecthCallbackSlot(),
@@ -493,10 +493,10 @@ void LLInventoryModel::cleanupInventory()
 
 // This is a convenience function to check if one object has a parent
 // chain up to the category specified by UUID.
-BOOL LLInventoryModel::isObjectDescendentOf(const LLUUID& obj_id,
+bool LLInventoryModel::isObjectDescendentOf(const LLUUID& obj_id,
                                             const LLUUID& cat_id) const
 {
-    if (obj_id == cat_id) return TRUE;
+    if (obj_id == cat_id) return true;
 
     const LLInventoryObject* obj = getObject(obj_id);
     while(obj)
@@ -504,17 +504,17 @@ BOOL LLInventoryModel::isObjectDescendentOf(const LLUUID& obj_id,
         const LLUUID& parent_id = obj->getParentUUID();
         if( parent_id.isNull() )
         {
-            return FALSE;
+            return false;
         }
         if(parent_id == cat_id)
         {
-            return TRUE;
+            return true;
         }
         // Since we're scanning up the parents, we only need to check
         // in the category list.
         obj = getCategory(parent_id);
     }
-    return FALSE;
+    return false;
 }
 
 const LLViewerInventoryCategory *LLInventoryModel::getFirstNondefaultParent(const LLUUID& obj_id) const
@@ -657,12 +657,12 @@ LLViewerInventoryCategory* LLInventoryModel::getCategory(const LLUUID& id) const
 
 S32 LLInventoryModel::getItemCount() const
 {
-    return mItemMap.size();
+    return static_cast<S32>(mItemMap.size());
 }
 
 S32 LLInventoryModel::getCategoryCount() const
 {
-    return mCategoryMap.size();
+    return static_cast<S32>(mCategoryMap.size());
 }
 
 // Return the direct descendents of the id provided. The array
@@ -782,7 +782,7 @@ void LLInventoryModel::consolidateForType(const LLUUID& main_id, LLFolderType::E
         for (std::vector<LLUUID>::const_iterator it = list_uuids.begin(); it != list_uuids.end(); ++it)
         {
             LLViewerInventoryItem* item = getItem(*it);
-            changeItemParent(item, main_id, TRUE);
+            changeItemParent(item, main_id, true);
         }
 
         // Move all folders to the main folder
@@ -794,7 +794,7 @@ void LLInventoryModel::consolidateForType(const LLUUID& main_id, LLFolderType::E
         for (std::vector<LLUUID>::const_iterator it = list_uuids.begin(); it != list_uuids.end(); ++it)
         {
             LLViewerInventoryCategory* cat = getCategory(*it);
-            changeCategoryParent(cat, main_id, TRUE);
+            changeCategoryParent(cat, main_id, true);
         }
 
         // Purge the emptied folder
@@ -805,7 +805,7 @@ void LLInventoryModel::consolidateForType(const LLUUID& main_id, LLFolderType::E
             const LLUUID trash_id = findCategoryUUIDForType(LLFolderType::FT_TRASH);
             if (trash_id.notNull())
             {
-                changeCategoryParent(cat, trash_id, TRUE);
+                changeCategoryParent(cat, trash_id, true);
             }
         }
         remove_inventory_category(folder_id, NULL);
@@ -822,17 +822,14 @@ void LLInventoryModel::ensureCategoryForTypeExists(LLFolderType::EType preferred
     }
     else if (root_id.notNull())
     {
-        cat_array_t* cats = NULL;
-        cats = get_ptr_in_map(mParentChildCategoryTree, root_id);
+        cat_array_t* cats = get_ptr_in_map(mParentChildCategoryTree, root_id);
         if (cats)
         {
-            S32 count = cats->size();
-            for (S32 i = 0; i < count; ++i)
+            for (auto& p_cat : *cats)
             {
-                LLViewerInventoryCategory* p_cat = cats->at(i);
                 if (p_cat && p_cat->getPreferredType() == preferred_type)
                 {
-                    const LLUUID& folder_id = cats->at(i)->getUUID();
+                    const LLUUID& folder_id = p_cat->getUUID();
                     if (rv.isNull() || folder_id < rv)
                     {
                         rv = folder_id;
@@ -891,17 +888,14 @@ const LLUUID LLInventoryModel::findCategoryUUIDForTypeInRoot(
     }
     else if (root_id.notNull())
     {
-        cat_array_t* cats = NULL;
-        cats = get_ptr_in_map(mParentChildCategoryTree, root_id);
+        cat_array_t* cats = get_ptr_in_map(mParentChildCategoryTree, root_id);
         if(cats)
         {
-            S32 count = cats->size();
-            for(S32 i = 0; i < count; ++i)
+            for (auto& p_cat : *cats)
             {
-                LLViewerInventoryCategory* p_cat = cats->at(i);
                 if(p_cat && p_cat->getPreferredType() == preferred_type)
                 {
-                    const LLUUID& folder_id = cats->at(i)->getUUID();
+                    const LLUUID& folder_id = p_cat->getUUID();
                     if (rv.isNull() || folder_id < rv)
                     {
                         rv = folder_id;
@@ -1257,14 +1251,14 @@ public:
     virtual bool operator()(LLInventoryCategory* cat,
                             LLInventoryItem* item)
     {
-        return TRUE;
+        return true;
     }
 };
 
 void LLInventoryModel::collectDescendents(const LLUUID& id,
                                           cat_array_t& cats,
                                           item_array_t& items,
-                                          BOOL include_trash)
+                                          bool include_trash)
 {
     LLAlwaysCollect always;
     collectDescendentsIf(id, cats, items, include_trash, always);
@@ -1273,7 +1267,7 @@ void LLInventoryModel::collectDescendents(const LLUUID& id,
 void LLInventoryModel::collectDescendentsIf(const LLUUID& id,
                                             cat_array_t& cats,
                                             item_array_t& items,
-                                            BOOL include_trash,
+                                            bool include_trash,
                                             LLInventoryCollectFunctor& add)
 {
     // Start with categories
@@ -1286,10 +1280,8 @@ void LLInventoryModel::collectDescendentsIf(const LLUUID& id,
     cat_array_t* cat_array = get_ptr_in_map(mParentChildCategoryTree, id);
     if(cat_array)
     {
-        S32 count = cat_array->size();
-        for(S32 i = 0; i < count; ++i)
+        for (auto& cat : *cat_array)
         {
-            LLViewerInventoryCategory* cat = cat_array->at(i);
             if(add(cat,NULL))
             {
                 cats.push_back(cat);
@@ -1298,16 +1290,13 @@ void LLInventoryModel::collectDescendentsIf(const LLUUID& id,
         }
     }
 
-    LLViewerInventoryItem* item = NULL;
     item_array_t* item_array = get_ptr_in_map(mParentChildItemTree, id);
 
     // Move onto items
     if(item_array)
     {
-        S32 count = item_array->size();
-        for(S32 i = 0; i < count; ++i)
+        for (auto& item : *item_array)
         {
-            item = item_array->at(i);
             if(add(NULL, item))
             {
                 items.push_back(item);
@@ -1400,7 +1389,9 @@ U32 LLInventoryModel::updateItem(const LLViewerInventoryItem* item, U32 mask)
         return mask;
     }
 
-    if (item->getType() == LLAssetType::AT_MESH)
+    if (item->getType() == LLAssetType::AT_MESH ||
+        item->getType() == LLAssetType::AT_GLTF ||
+        item->getType() == LLAssetType::AT_GLTF_BIN)
     {
         return mask;
     }
@@ -1474,7 +1465,7 @@ U32 LLInventoryModel::updateItem(const LLViewerInventoryItem* item, U32 mask)
         {
             // Parent id at server is null, so update server even if item already is in the same folder
             old_item->setParent(new_parent_id);
-            new_item->updateParentOnServer(FALSE);
+            new_item->updateParentOnServer(false);
         }
         mask |= LLInventoryObserver::INTERNAL;
     }
@@ -1495,7 +1486,7 @@ U32 LLInventoryModel::updateItem(const LLViewerInventoryItem* item, U32 mask)
                 gInventory.accountForUpdate(update);
 
                 // *FIX: bit of a hack to call update server from here...
-                new_item->updateParentOnServer(FALSE);
+                new_item->updateParentOnServer(false);
                 item_array->push_back(new_item);
             }
             else
@@ -1540,7 +1531,7 @@ U32 LLInventoryModel::updateItem(const LLViewerInventoryItem* item, U32 mask)
                     gInventory.accountForUpdate(update);
                     // *FIX: bit of a hack to call update server from
                     // here...
-                    new_item->updateParentOnServer(FALSE);
+                    new_item->updateParentOnServer(false);
                     item_array->push_back(new_item);
                 }
                 else
@@ -1558,7 +1549,7 @@ U32 LLInventoryModel::updateItem(const LLViewerInventoryItem* item, U32 mask)
         // Target ID is stored in the description field of the card.
         LLUUID id;
         std::string desc = new_item->getDescription();
-        BOOL isId = desc.empty() ? FALSE : id.set(desc, FALSE);
+        bool isId = desc.empty() ? false : id.set(desc, false);
         if (isId)
         {
             // Valid UUID; set the item UUID and rename it
@@ -1593,7 +1584,7 @@ LLInventoryModel::cat_array_t* LLInventoryModel::getUnlockedCatArray(const LLUUI
     cat_array_t* cat_array = get_ptr_in_map(mParentChildCategoryTree, id);
     if (cat_array)
     {
-        llassert_always(mCategoryLock[id] == false);
+        llassert_always(!mCategoryLock[id]);
     }
     return cat_array;
 }
@@ -1603,7 +1594,7 @@ LLInventoryModel::item_array_t* LLInventoryModel::getUnlockedItemArray(const LLU
     item_array_t* item_array = get_ptr_in_map(mParentChildItemTree, id);
     if (item_array)
     {
-        llassert_always(mItemLock[id] == false);
+        llassert_always(!mItemLock[id]);
     }
     return item_array;
 }
@@ -1675,8 +1666,8 @@ void LLInventoryModel::updateCategory(const LLViewerInventoryCategory* cat, U32
         }
 
         // make space in the tree for this category's children.
-        llassert_always(mCategoryLock[new_cat->getUUID()] == false);
-        llassert_always(mItemLock[new_cat->getUUID()] == false);
+        llassert_always(!mCategoryLock[new_cat->getUUID()]);
+        llassert_always(!mItemLock[new_cat->getUUID()]);
         cat_array_t* catsp = new cat_array_t;
         item_array_t* itemsp = new item_array_t;
         mParentChildCategoryTree[new_cat->getUUID()] = catsp;
@@ -1732,7 +1723,7 @@ void LLInventoryModel::moveObject(const LLUUID& object_id, const LLUUID& cat_id)
 // Migrated from llinventoryfunctions
 void LLInventoryModel::changeItemParent(LLViewerInventoryItem* item,
                                         const LLUUID& new_parent_id,
-                                        BOOL restamp)
+                                        bool restamp)
 {
     if (item->getParentUUID() == new_parent_id)
     {
@@ -1760,7 +1751,7 @@ void LLInventoryModel::changeItemParent(LLViewerInventoryItem* item,
 // Migrated from llinventoryfunctions
 void LLInventoryModel::changeCategoryParent(LLViewerInventoryCategory* cat,
                                             const LLUUID& new_parent_id,
-                                            BOOL restamp)
+                                            bool restamp)
 {
     if (!cat)
     {
@@ -1906,10 +1897,10 @@ void LLInventoryModel::onDescendentsPurgedFromServer(const LLUUID& object_id, bo
                            categories,
                            items,
                            LLInventoryModel::INCLUDE_TRASH);
-        S32 count = items.size();
+        auto count = items.size();
 
         LLUUID uu_id;
-        for(S32 i = 0; i < count; ++i)
+        for(size_t i = 0; i < count; ++i)
         {
             uu_id = items.at(i)->getUUID();
 
@@ -1985,7 +1976,7 @@ void LLInventoryModel::onObjectDeletedFromServer(const LLUUID& object_id, bool f
         LLViewerInventoryItem *item = getItem(object_id);
         if (item && (item->getType() != LLAssetType::AT_LSL_TEXT))
         {
-            LLPreview::hide(object_id, TRUE);
+            LLPreview::hide(object_id, true);
         }
         deleteObject(object_id, fix_broken_links, do_notify_observers);
     }
@@ -2104,7 +2095,7 @@ void LLInventoryModel::removeObserver(LLInventoryObserver* observer)
     mObservers.erase(observer);
 }
 
-BOOL LLInventoryModel::containsObserver(LLInventoryObserver* observer) const
+bool LLInventoryModel::containsObserver(LLInventoryObserver* observer) const
 {
     return mObservers.find(observer) != mObservers.end();
 }
@@ -2147,7 +2138,7 @@ void LLInventoryModel::notifyObservers()
         return;
     }
 
-    mIsNotifyObservers = TRUE;
+    mIsNotifyObservers = true;
     for (observer_list_t::iterator iter = mObservers.begin();
          iter != mObservers.end(); )
     {
@@ -2170,7 +2161,7 @@ void LLInventoryModel::notifyObservers()
     mChangedItemIDsBacklog.clear();
     mAddedItemIDsBacklog.clear();
 
-    mIsNotifyObservers = FALSE;
+    mIsNotifyObservers = false;
 }
 
 // store flag for change
@@ -2689,8 +2680,8 @@ bool LLInventoryModel::loadSkeleton(
         }
     }
 
-    S32 cached_category_count = 0;
-    S32 cached_item_count = 0;
+    size_t cached_category_count = 0;
+    size_t cached_item_count = 0;
     if(!temp_cats.empty())
     {
         update_map_t child_counts;
@@ -2739,12 +2730,10 @@ bool LLInventoryModel::loadSkeleton(
             // found to generate a set of categories we should add. We
             // will go through each category loaded and if the version
             // does not match, invalidate the version.
-            S32 count = categories.size();
             cat_set_t::iterator not_cached = temp_cats.end();
-            std::set<LLUUID> cached_ids;
-            for(S32 i = 0; i < count; ++i)
+            uuid_set_t cached_ids;
+            for (auto& cat : categories)
             {
-                LLViewerInventoryCategory* cat = categories[i];
                 cat_set_t::iterator cit = temp_cats.find(cat);
                 if (cit == temp_cats.end())
                 {
@@ -2965,13 +2954,13 @@ void LLInventoryModel::buildParentChildMap()
         cats.push_back(cat);
         if (mParentChildCategoryTree.count(cat->getUUID()) == 0)
         {
-            llassert_always(mCategoryLock[cat->getUUID()] == false);
+            llassert_always(!mCategoryLock[cat->getUUID()]);
             catsp = new cat_array_t;
             mParentChildCategoryTree[cat->getUUID()] = catsp;
         }
         if (mParentChildItemTree.count(cat->getUUID()) == 0)
         {
-            llassert_always(mItemLock[cat->getUUID()] == false);
+            llassert_always(!mItemLock[cat->getUUID()]);
             itemsp = new item_array_t;
             mParentChildItemTree[cat->getUUID()] = itemsp;
         }
@@ -2990,13 +2979,11 @@ void LLInventoryModel::buildParentChildMap()
     // Now we have a structure with all of the categories that we can
     // iterate over and insert into the correct place in the child
     // category tree.
-    S32 count = cats.size();
     S32 i;
     S32 lost = 0;
     cat_array_t lost_cats;
-    for(i = 0; i < count; ++i)
+    for (auto& cat : cats)
     {
-        LLViewerInventoryCategory* cat = cats.at(i);
         catsp = getUnlockedCatArray(cat->getParentUUID());
         if(catsp &&
            // Only the two root folders should be children of null.
@@ -3050,10 +3037,10 @@ void LLInventoryModel::buildParentChildMap()
         // FIXME note that updateServer() fails with protected
         // types, so this will not work as intended in that case.
         // UpdateServer uses AIS, AIS cat move is not implemented yet
-        // cat->updateServer(TRUE);
+        // cat->updateServer(true);
 
         // MoveInventoryFolder message, intentionally per item
-        cat->updateParentOnServer(FALSE);
+        cat->updateParentOnServer(false);
         catsp = getUnlockedCatArray(cat->getParentUUID());
         if(catsp)
         {
@@ -3065,7 +3052,7 @@ void LLInventoryModel::buildParentChildMap()
         }
     }
 
-    const BOOL COF_exists = (findCategoryUUIDForType(LLFolderType::FT_CURRENT_OUTFIT) != LLUUID::null);
+    const bool COF_exists = (findCategoryUUIDForType(LLFolderType::FT_CURRENT_OUTFIT) != LLUUID::null);
     sFirstTimeInViewer2 = !COF_exists || gAgent.isFirstLogin();
 
 
@@ -3082,13 +3069,10 @@ void LLInventoryModel::buildParentChildMap()
             items.push_back(item);
         }
     }
-    count = items.size();
     lost = 0;
     uuid_vec_t lost_item_ids;
-    for(i = 0; i < count; ++i)
+    for (auto& item : items)
     {
-        LLPointer<LLViewerInventoryItem> item;
-        item = items.at(i);
         itemsp = getUnlockedItemArray(item->getParentUUID());
         if(itemsp)
         {
@@ -3121,18 +3105,18 @@ void LLInventoryModel::buildParentChildMap()
     {
         LL_WARNS(LOG_INV) << "Found " << lost << " lost items." << LL_ENDL;
         LLMessageSystem* msg = gMessageSystem;
-        BOOL start_new_message = TRUE;
+        bool start_new_message = true;
         const LLUUID lnf = findCategoryUUIDForType(LLFolderType::FT_LOST_AND_FOUND);
         for(uuid_vec_t::iterator it = lost_item_ids.begin() ; it < lost_item_ids.end(); ++it)
         {
             if(start_new_message)
             {
-                start_new_message = FALSE;
+                start_new_message = false;
                 msg->newMessageFast(_PREHASH_MoveInventoryItem);
                 msg->nextBlockFast(_PREHASH_AgentData);
                 msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
                 msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
-                msg->addBOOLFast(_PREHASH_Stamp, FALSE);
+                msg->addBOOLFast(_PREHASH_Stamp, false);
             }
             msg->nextBlockFast(_PREHASH_InventoryData);
             msg->addUUIDFast(_PREHASH_ItemID, (*it));
@@ -3140,7 +3124,7 @@ void LLInventoryModel::buildParentChildMap()
             msg->addString("NewName", NULL);
             if(msg->isSendFull(NULL))
             {
-                start_new_message = TRUE;
+                start_new_message = true;
                 gAgent.sendReliableMessage();
             }
         }
@@ -3469,12 +3453,9 @@ bool LLInventoryModel::saveToFile(const std::string& filename,
 
         fileXML << LLSDOStreamer<LLSDNotationFormatter>(cache_ver) << std::endl;
 
-        S32 count = categories.size();
         S32 cat_count = 0;
-        S32 i;
-        for (i = 0; i < count; ++i)
+        for (auto& cat : categories)
         {
-            LLViewerInventoryCategory* cat = categories[i];
             if (cat->getVersion() != LLViewerInventoryCategory::VERSION_UNKNOWN)
             {
                 fileXML << LLSDOStreamer<LLSDNotationFormatter>(cat->exportLLSD()) << std::endl;
@@ -3488,10 +3469,10 @@ bool LLInventoryModel::saveToFile(const std::string& filename,
             }
         }
 
-        S32 it_count = items.size();
-        for (i = 0; i < it_count; ++i)
+        auto it_count = items.size();
+        for (auto& item : items)
         {
-            fileXML << LLSDOStreamer<LLSDNotationFormatter>(items[i]->asLLSD()) << std::endl;
+            fileXML << LLSDOStreamer<LLSDNotationFormatter>(item->asLLSD()) << std::endl;
 
             if (fileXML.fail())
             {
@@ -3952,16 +3933,14 @@ void LLInventoryModel::processBulkUpdateInventory(LLMessageSystem* msg, void**)
     if (LLInventoryState::sWearNewClothing)
     {
         LLInventoryState::sWearNewClothingTransactionID = tid;
-        LLInventoryState::sWearNewClothing = FALSE;
+        LLInventoryState::sWearNewClothing = false;
     }
 
     if (tid.notNull() && tid == LLInventoryState::sWearNewClothingTransactionID)
     {
-        count = wearable_ids.size();
-        for (i = 0; i < count; ++i)
+        for (const auto& wearable_id : wearable_ids)
         {
-            LLViewerInventoryItem* wearable_item;
-            wearable_item = gInventory.getItem(wearable_ids[i]);
+            LLViewerInventoryItem* wearable_item = gInventory.getItem(wearable_id);
             LLAppearanceMgr::instance().wearItemOnAvatar(wearable_item->getUUID(), true, true);
         }
     }
@@ -4056,7 +4035,7 @@ void LLInventoryModel::emptyFolderType(const std::string notification, LLFolderT
             LLInventoryModel::item_array_t items;
             const LLUUID trash_id = findCategoryUUIDForType(preferred_type);
             gInventory.collectDescendents(trash_id, cats, items, LLInventoryModel::INCLUDE_TRASH); //All descendants
-            S32 item_count = items.size() + cats.size();
+            S32 item_count = static_cast<S32>(items.size() + cats.size());
             args["COUNT"] = item_count;
         }
         LLNotificationsUtil::add(notification, args, LLSD(),
@@ -4084,7 +4063,7 @@ void LLInventoryModel::removeItem(const LLUUID& item_id)
         if (new_parent.notNull())
         {
             LL_INFOS("Inventory") << "Moving to Trash (" << new_parent << "):" << LL_ENDL;
-            changeItemParent(item, new_parent, TRUE);
+            changeItemParent(item, new_parent, true);
         }
     }
 }
@@ -4099,7 +4078,7 @@ void LLInventoryModel::removeCategory(const LLUUID& category_id)
     // Look for any gestures and deactivate them
     LLInventoryModel::cat_array_t   descendent_categories;
     LLInventoryModel::item_array_t  descendent_items;
-    collectDescendents(category_id, descendent_categories, descendent_items, FALSE);
+    collectDescendents(category_id, descendent_categories, descendent_items, false);
 
     for (LLInventoryModel::item_array_t::const_iterator iter = descendent_items.begin();
          iter != descendent_items.end();
@@ -4120,7 +4099,7 @@ void LLInventoryModel::removeCategory(const LLUUID& category_id)
         const LLUUID trash_id = findCategoryUUIDForType(LLFolderType::FT_TRASH);
         if (trash_id.notNull())
         {
-            changeCategoryParent(cat, trash_id, TRUE);
+            changeCategoryParent(cat, trash_id, true);
         }
     }
 
@@ -4178,7 +4157,7 @@ void  LLInventoryModel::checkTrashOverflow()
     LLInventoryModel::item_array_t items;
     const LLUUID trash_id = findCategoryUUIDForType(LLFolderType::FT_TRASH);
     gInventory.collectDescendents(trash_id, cats, items, LLInventoryModel::INCLUDE_TRASH);
-    S32 item_count = items.size() + cats.size();
+    auto item_count = items.size() + cats.size();
 
     if (item_count >= trash_max_capacity)
     {
@@ -4226,13 +4205,13 @@ void LLInventoryModel::setLibraryOwnerID(const LLUUID& val)
 }
 
 // static
-BOOL LLInventoryModel::getIsFirstTimeInViewer2()
+bool LLInventoryModel::getIsFirstTimeInViewer2()
 {
     // Do not call this before parentchild map is built.
     if (!gInventory.mIsAgentInvUsable)
     {
         LL_WARNS() << "Parent Child Map not yet built; guessing as first time in viewer2." << LL_ENDL;
-        return TRUE;
+        return true;
     }
 
     return sFirstTimeInViewer2;
@@ -4851,9 +4830,9 @@ std::string LLInventoryModel::getFullPath(const LLInventoryObject *obj) const
 
 
 #if 0
-BOOL decompress_file(const char* src_filename, const char* dst_filename)
+bool decompress_file(const char* src_filename, const char* dst_filename)
 {
-    BOOL rv = FALSE;
+    bool rv = false;
     gzFile src = NULL;
     U8* buffer = NULL;
     LLFILE* dst = NULL;
@@ -4881,7 +4860,7 @@ BOOL decompress_file(const char* src_filename, const char* dst_filename)
     } while(gzeof(src) == 0);
 
     // success
-    rv = TRUE;
+    rv = true;
 
  err_decompress:
     if(src != NULL) gzclose(src);
@@ -4987,7 +4966,7 @@ void LLInventoryModel::FetchItemHttpHandler::processData(LLSD & content, LLCore:
     LLInventoryModel::update_map_t update;
     LLUUID folder_id;
     LLSD content_items(content["items"]);
-    const S32 count(content_items.size());
+    const S32 count(static_cast<S32>(content_items.size()));
 
     // Does this loop ever execute more than once?
     for (S32 i(0); i < count; ++i)
diff --git a/indra/newview/llinventorymodel.h b/indra/newview/llinventorymodel.h
index e179f4a740..1472b705e4 100644
--- a/indra/newview/llinventorymodel.h
+++ b/indra/newview/llinventorymodel.h
@@ -225,11 +225,11 @@ private:
     // Login
     //--------------------------------------------------------------------
 public:
-    static BOOL getIsFirstTimeInViewer2();
+    static bool getIsFirstTimeInViewer2();
     static bool  isSysFoldersReady() { return (sPendingSystemFolders == 0); }
 
 private:
-    static BOOL sFirstTimeInViewer2;
+    static bool sFirstTimeInViewer2;
     const static S32 sCurrentInvCacheVersion; // expected inventory cache version
 
     static S32 sPendingSystemFolders;
@@ -272,8 +272,8 @@ public:
     //    Do not store a copy of the pointers collected - use them, and
     //    collect them again later if you need to reference the same objects.
     enum {
-        EXCLUDE_TRASH = FALSE,
-        INCLUDE_TRASH = TRUE
+        EXCLUDE_TRASH = false,
+        INCLUDE_TRASH = true
     };
     // Simpler existence test if matches don't actually need to be collected.
     bool hasMatchingDirectDescendent(const LLUUID& cat_id,
@@ -281,11 +281,11 @@ public:
     void collectDescendents(const LLUUID& id,
                             cat_array_t& categories,
                             item_array_t& items,
-                            BOOL include_trash);
+                            bool include_trash);
     void collectDescendentsIf(const LLUUID& id,
                               cat_array_t& categories,
                               item_array_t& items,
-                              BOOL include_trash,
+                              bool include_trash,
                               LLInventoryCollectFunctor& add);
 
     // Collect all items in inventory that are linked to item_id.
@@ -293,7 +293,7 @@ public:
     item_array_t collectLinksTo(const LLUUID& item_id);
 
     // Check if one object has a parent chain up to the category specified by UUID.
-    BOOL isObjectDescendentOf(const LLUUID& obj_id, const LLUUID& cat_id) const;
+    bool isObjectDescendentOf(const LLUUID& obj_id, const LLUUID& cat_id) const;
 
     enum EAncestorResult{
         ANCESTOR_OK = 0,
@@ -404,12 +404,12 @@ public:
     // Migrated from llinventoryfunctions
     void changeItemParent(LLViewerInventoryItem* item,
                           const LLUUID& new_parent_id,
-                          BOOL restamp);
+                          bool restamp);
 
     // Migrated from llinventoryfunctions
     void changeCategoryParent(LLViewerInventoryCategory* cat,
                               const LLUUID& new_parent_id,
-                              BOOL restamp);
+                              bool restamp);
 
     // Marks links from a "possibly" broken list for a rebuild
     // clears the list
@@ -577,7 +577,7 @@ protected:
 private:
     // Flag set when notifyObservers is being called, to look for bugs
     // where it's called recursively.
-    BOOL mIsNotifyObservers;
+    bool mIsNotifyObservers;
     // Variables used to track what has changed since the last notify.
     U32 mModifyMask;
     changed_items_t mChangedItemIDs;
@@ -599,7 +599,7 @@ public:
     // If the observer is destroyed, be sure to remove it.
     void addObserver(LLInventoryObserver* observer);
     void removeObserver(LLInventoryObserver* observer);
-    BOOL containsObserver(LLInventoryObserver* observer) const;
+    bool containsObserver(LLInventoryObserver* observer) const;
 private:
     typedef std::set<LLInventoryObserver*> observer_list_t;
     observer_list_t mObservers;
diff --git a/indra/newview/llinventorymodelbackgroundfetch.cpp b/indra/newview/llinventorymodelbackgroundfetch.cpp
index 77cf5bdcf2..d9ace1542b 100644
--- a/indra/newview/llinventorymodelbackgroundfetch.cpp
+++ b/indra/newview/llinventorymodelbackgroundfetch.cpp
@@ -250,7 +250,7 @@ bool LLInventoryModelBackgroundFetch::isEverythingFetched() const
     return mAllRecursiveFoldersFetched;
 }
 
-BOOL LLInventoryModelBackgroundFetch::folderFetchActive() const
+bool LLInventoryModelBackgroundFetch::folderFetchActive() const
 {
     return mFolderFetchActive;
 }
@@ -751,7 +751,7 @@ void LLInventoryModelBackgroundFetch::bulkFetchViaAis()
     // Reserve one request for actions outside of fetch (like renames)
     const U32 max_concurrent_fetches = llclamp(ais_pool - 1, 1, 50);
 
-    if (mFetchCount >= max_concurrent_fetches)
+    if ((U32)mFetchCount >= max_concurrent_fetches)
     {
         return;
     }
@@ -764,7 +764,7 @@ void LLInventoryModelBackgroundFetch::bulkFetchViaAis()
     const F64 end_time = curent_time + max_time;
     S32 last_fetch_count = mFetchCount;
 
-    while (!mFetchFolderQueue.empty() && mFetchCount < max_concurrent_fetches && curent_time < end_time)
+    while (!mFetchFolderQueue.empty() && (U32)mFetchCount < max_concurrent_fetches && curent_time < end_time)
     {
         const FetchQueueInfo & fetch_info(mFetchFolderQueue.front());
         bulkFetchViaAis(fetch_info);
@@ -775,7 +775,7 @@ void LLInventoryModelBackgroundFetch::bulkFetchViaAis()
     // Ideally we shouldn't fetch items if recursive fetch isn't done,
     // but there is a chance some request will start timeouting and recursive
     // fetch will get stuck on a signle folder, don't block item fetch in such case
-    while (!mFetchItemQueue.empty() && mFetchCount < max_concurrent_fetches && curent_time < end_time)
+    while (!mFetchItemQueue.empty() && (U32)mFetchCount < max_concurrent_fetches && curent_time < end_time)
     {
         const FetchQueueInfo& fetch_info(mFetchItemQueue.front());
         bulkFetchViaAis(fetch_info);
@@ -1126,8 +1126,8 @@ void LLInventoryModelBackgroundFetch::bulkFetch()
                             folder_sd["folder_id"] = cat->getUUID();
                             folder_sd["owner_id"] = cat->getOwnerID();
                             folder_sd["sort_order"] = LLSD::Integer(sort_order);
-                            folder_sd["fetch_folders"] = LLSD::Boolean(TRUE); //(LLSD::Boolean)sFullFetchStarted;
-                            folder_sd["fetch_items"] = LLSD::Boolean(TRUE);
+                            folder_sd["fetch_folders"] = LLSD::Boolean(true); //(LLSD::Boolean)sFullFetchStarted;
+                            folder_sd["fetch_items"] = LLSD::Boolean(true);
 
                             if (ALEXANDRIA_LINDEN_ID == cat->getOwnerID())
                             {
@@ -1409,7 +1409,7 @@ void BGFolderHttpHandler::processData(LLSD & content, LLCore::HttpResponse * res
                         gInventory.accountForUpdate(update);
 
                         titem->setParent(lost_uuid);
-                        titem->updateParentOnServer(FALSE);
+                        titem->updateParentOnServer(false);
                         gInventory.updateItem(titem);
                     }
                 }
@@ -1513,7 +1513,7 @@ void BGFolderHttpHandler::processFailure(LLCore::HttpStatus status, LLCore::Http
             return;
         }
 
-        S32 size = mRequestSD["folders"].size();
+        auto size = mRequestSD["folders"].size();
 
         if (size > 1)
         {
@@ -1530,7 +1530,7 @@ void BGFolderHttpHandler::processFailure(LLCore::HttpStatus status, LLCore::Http
                 {
                     recursive_cats.push_back(folder_id);
                 }
-                if (folders.size() == (S32)(size / 2))
+                if (folders.size() == (size / 2))
                 {
                     LLSD request_body;
                     request_body["folders"] = folders;
@@ -1571,7 +1571,7 @@ void BGFolderHttpHandler::processFailure(LLCore::HttpStatus status, LLCore::Http
         {
             LLSD folder_sd(*folder_it);
             LLUUID folder_id(folder_sd["folder_id"].asUUID());
-            const BOOL recursive = getIsRecursive(folder_id);
+            const bool recursive = getIsRecursive(folder_id);
             fetcher->addRequestAtFront(folder_id, recursive, true);
         }
     }
@@ -1608,7 +1608,7 @@ void BGFolderHttpHandler::processFailure(const char * const reason, LLCore::Http
         {
             LLSD folder_sd(*folder_it);
             LLUUID folder_id(folder_sd["folder_id"].asUUID());
-            const BOOL recursive = getIsRecursive(folder_id);
+            const bool recursive = getIsRecursive(folder_id);
             fetcher->addRequestAtFront(folder_id, recursive, true);
         }
     }
diff --git a/indra/newview/llinventorymodelbackgroundfetch.h b/indra/newview/llinventorymodelbackgroundfetch.h
index 54077b71b2..b3fbe66c69 100644
--- a/indra/newview/llinventorymodelbackgroundfetch.h
+++ b/indra/newview/llinventorymodelbackgroundfetch.h
@@ -60,7 +60,7 @@ public:
     // AIS3 only
     void fetchCOF(nullary_func_t callback);
 
-    BOOL folderFetchActive() const;
+    bool folderFetchActive() const;
     bool isEverythingFetched() const; // completing the fetch once per session should be sufficient
 
     bool libraryFetchStarted() const;
diff --git a/indra/newview/llinventoryobserver.cpp b/indra/newview/llinventoryobserver.cpp
index 1c76c154a1..ac791e224e 100644
--- a/indra/newview/llinventoryobserver.cpp
+++ b/indra/newview/llinventoryobserver.cpp
@@ -85,7 +85,7 @@ LLInventoryFetchObserver::LLInventoryFetchObserver(const uuid_vec_t& ids)
     setFetchIDs(ids);
 }
 
-BOOL LLInventoryFetchObserver::isFinished() const
+bool LLInventoryFetchObserver::isFinished() const
 {
     return mIncomplete.empty();
 }
@@ -454,14 +454,14 @@ void LLInventoryFetchDescendentsObserver::startFetch()
     }
 }
 
-BOOL LLInventoryFetchDescendentsObserver::isCategoryComplete(const LLViewerInventoryCategory* cat) const
+bool LLInventoryFetchDescendentsObserver::isCategoryComplete(const LLViewerInventoryCategory* cat) const
 {
     const S32 version = cat->getVersion();
     const S32 expected_num_descendents = cat->getDescendentCount();
     if ((version == LLViewerInventoryCategory::VERSION_UNKNOWN) ||
         (expected_num_descendents == LLViewerInventoryCategory::DESCENDENT_COUNT_UNKNOWN))
     {
-        return FALSE;
+        return false;
     }
     // it might be complete - check known descendents against
     // currently available.
@@ -475,14 +475,14 @@ BOOL LLInventoryFetchDescendentsObserver::isCategoryComplete(const LLViewerInven
         // that the cat just doesn't have any items or subfolders).
         // Unrecoverable, so just return done so that this observer can be cleared
         // from memory.
-        return TRUE;
+        return true;
     }
-    const S32 current_num_known_descendents = cats->size() + items->size();
+    const S32 current_num_known_descendents = static_cast<S32>(cats->size() + items->size());
 
     // Got the number of descendents that we were expecting, so we're done.
     if (current_num_known_descendents == expected_num_descendents)
     {
-        return TRUE;
+        return true;
     }
 
     // Error condition, but recoverable.  This happens if something was added to the
@@ -492,9 +492,9 @@ BOOL LLInventoryFetchDescendentsObserver::isCategoryComplete(const LLViewerInven
     {
         LL_WARNS() << "Category '" << cat->getName() << "' expected descendentcount:" << expected_num_descendents << " descendents but got descendentcount:" << current_num_known_descendents << LL_ENDL;
         const_cast<LLViewerInventoryCategory *>(cat)->setDescendentCount(current_num_known_descendents);
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 LLInventoryFetchComboObserver::LLInventoryFetchComboObserver(const uuid_vec_t& folder_ids,
@@ -715,7 +715,7 @@ void LLInventoryCategoriesObserver::changed(U32 mask)
             continue;
         }
 
-        const S32 current_num_known_descendents = cats->size() + items->size();
+        const S32 current_num_known_descendents = static_cast<S32>(cats->size() + items->size());
 
         bool cat_changed = false;
 
@@ -795,7 +795,7 @@ bool LLInventoryCategoriesObserver::addCategory(const LLUUID& cat_id, callback_t
         }
         else
         {
-            current_num_known_descendents = cats->size() + items->size();
+            current_num_known_descendents = static_cast<S32>(cats->size() + items->size());
         }
     }
 
diff --git a/indra/newview/llinventoryobserver.h b/indra/newview/llinventoryobserver.h
index 43bcf14d89..950b02d3cf 100644
--- a/indra/newview/llinventoryobserver.h
+++ b/indra/newview/llinventoryobserver.h
@@ -80,7 +80,7 @@ public:
     void setFetchID(const LLUUID& id);
     void setFetchIDs(const uuid_vec_t& ids);
 
-    BOOL isFinished() const;
+    bool isFinished() const;
 
     virtual void startFetch() = 0;
     virtual void changed(U32 mask) = 0;
@@ -131,7 +131,7 @@ public:
     virtual void startFetch();
     /*virtual*/ void changed(U32 mask);
 protected:
-    BOOL isCategoryComplete(const LLViewerInventoryCategory* cat) const;
+    bool isCategoryComplete(const LLViewerInventoryCategory* cat) const;
 };
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/indra/newview/llinventorypanel.cpp b/indra/newview/llinventorypanel.cpp
index 6f8a33933f..43bfe76b7f 100644
--- a/indra/newview/llinventorypanel.cpp
+++ b/indra/newview/llinventorypanel.cpp
@@ -377,7 +377,7 @@ void LLInventoryPanel::initializeViewBuilding()
 }
 
 /*virtual*/
-void LLInventoryPanel::onVisibilityChange(BOOL new_visibility)
+void LLInventoryPanel::onVisibilityChange(bool new_visibility)
 {
     if (new_visibility && mViewsInitialized == VIEWS_UNINITIALIZED)
     {
@@ -476,7 +476,7 @@ U32 LLInventoryPanel::getSortOrder() const
     return getFolderViewModel()->getSorter().getSortOrder();
 }
 
-void LLInventoryPanel::setSinceLogoff(BOOL sl)
+void LLInventoryPanel::setSinceLogoff(bool sl)
 {
     getFilter().setDateRangeLastLogoff(sl);
 }
@@ -563,7 +563,7 @@ void LLInventoryPanel::itemChanged(const LLUUID& item_id, U32 mask, const LLInve
                 view_item->refresh();
             }
             LLFolderViewFolder* parent = view_item->getParentFolder();
-            if(parent)
+            if(parent && parent->getViewModelItem())
             {
                 parent->getViewModelItem()->dirtyDescendantsFilter();
             }
@@ -614,7 +614,7 @@ void LLInventoryPanel::itemChanged(const LLUUID& item_id, U32 mask, const LLInve
     // Sort the folder.
     if (mask & LLInventoryObserver::SORT)
     {
-        if (view_folder)
+        if (view_folder && view_folder->getViewModelItem())
         {
             view_folder->getViewModelItem()->requestSort();
         }
@@ -645,7 +645,7 @@ void LLInventoryPanel::itemChanged(const LLUUID& item_id, U32 mask, const LLInve
             // Select any newly created object that has the auto rename at top of folder root set.
             if(mFolderRoot.get()->getRoot()->needsAutoRename())
             {
-                setSelection(item_id, FALSE);
+                setSelection(item_id, false);
             }
             updateFolderLabel(model_item->getParentUUID());
         }
@@ -659,7 +659,8 @@ void LLInventoryPanel::itemChanged(const LLUUID& item_id, U32 mask, const LLInve
             // Don't process the item if it is the root
             if (old_parent)
             {
-                LLFolderViewModelItemInventory* viewmodel_folder = static_cast<LLFolderViewModelItemInventory*>(old_parent->getViewModelItem());
+                LLFolderViewModelItem* old_parent_vmi = old_parent->getViewModelItem();
+                LLFolderViewModelItemInventory* viewmodel_folder = static_cast<LLFolderViewModelItemInventory*>(old_parent_vmi);
                 LLFolderViewFolder* new_parent =   (LLFolderViewFolder*)getItemByID(model_item->getParentUUID());
                 // Item has been moved.
                 if (old_parent != new_parent)
@@ -674,7 +675,7 @@ void LLInventoryPanel::itemChanged(const LLUUID& item_id, U32 mask, const LLInve
                             const LLUUID trash_id = mInventory->findCategoryUUIDForType(LLFolderType::FT_TRASH);
                             if (trash_id != model_item->getParentUUID() && (mask & LLInventoryObserver::INTERNAL) && new_parent->isOpen())
                             {
-                                setSelection(item_id, FALSE);
+                                setSelection(item_id, false);
                             }
                         }
                         updateFolderLabel(model_item->getParentUUID());
@@ -693,7 +694,10 @@ void LLInventoryPanel::itemChanged(const LLUUID& item_id, U32 mask, const LLInve
                     {
                         updateFolderLabel(viewmodel_folder->getUUID());
                     }
-                    old_parent->getViewModelItem()->dirtyDescendantsFilter();
+                    if (old_parent_vmi)
+                    {
+                        old_parent_vmi->dirtyDescendantsFilter();
+                    }
                 }
             }
         }
@@ -709,11 +713,15 @@ void LLInventoryPanel::itemChanged(const LLUUID& item_id, U32 mask, const LLInve
             view_item->destroyView();
             if(parent)
             {
-                parent->getViewModelItem()->dirtyDescendantsFilter();
-                LLFolderViewModelItemInventory* viewmodel_folder = static_cast<LLFolderViewModelItemInventory*>(parent->getViewModelItem());
-                if(viewmodel_folder)
+                LLFolderViewModelItem* parent_wmi = parent->getViewModelItem();
+                if (parent_wmi)
                 {
-                    updateFolderLabel(viewmodel_folder->getUUID());
+                    parent_wmi->dirtyDescendantsFilter();
+                    LLFolderViewModelItemInventory* viewmodel_folder = static_cast<LLFolderViewModelItemInventory*>(parent_wmi);
+                    if (viewmodel_folder)
+                    {
+                        updateFolderLabel(viewmodel_folder->getUUID());
+                    }
                 }
             }
         }
@@ -883,16 +891,16 @@ void LLInventoryPanel::idle(void* user_data)
             EAcceptance last_accept = LLToolDragAndDrop::getInstance()->getLastAccept();
             if (last_accept == ACCEPT_YES_SINGLE || last_accept == ACCEPT_YES_COPY_SINGLE)
             {
-                panel->mFolderRoot.get()->setShowSingleSelection(TRUE);
+                panel->mFolderRoot.get()->setShowSingleSelection(true);
             }
             else
             {
-                panel->mFolderRoot.get()->setShowSingleSelection(FALSE);
+                panel->mFolderRoot.get()->setShowSingleSelection(false);
             }
         }
         else
         {
-            panel->mFolderRoot.get()->setShowSingleSelection(FALSE);
+            panel->mFolderRoot.get()->setShowSingleSelection(false);
         }
     }
     else
@@ -946,14 +954,14 @@ void LLInventoryPanel::initializeViews(F64 max_time)
         LLFolderViewFolder* lib_folder =   getFolderByID(gInventory.getLibraryRootFolderID());
         if (lib_folder)
         {
-            lib_folder->setOpen(TRUE);
+            lib_folder->setOpen(true);
         }
 
         // Auto close the user's my inventory folder
         LLFolderViewFolder* my_inv_folder =   getFolderByID(gInventory.getRootFolderID());
         if (my_inv_folder)
         {
-            my_inv_folder->setOpenArrangeRecursively(FALSE, LLFolderViewFolder::RECURSE_DOWN);
+            my_inv_folder->setOpenArrangeRecursively(false, LLFolderViewFolder::RECURSE_DOWN);
         }
     }
 }
@@ -1142,7 +1150,7 @@ LLFolderViewItem* LLInventoryPanel::buildViewsTree(const LLUUID& id,
             // In the case of the root folder been shown, open that folder by default once the widget is created
             if (create_root)
             {
-                folder_view_item->setOpen(TRUE);
+                folder_view_item->setOpen(true);
             }
         }
     }
@@ -1220,7 +1228,7 @@ LLFolderViewItem* LLInventoryPanel::buildViewsTree(const LLUUID& id,
         // Make sure panel won't lock in a loop over existing items if
         // folder is enormous and at least some work gets done
         const S32 MIN_ITEMS_PER_CALL = 500;
-        const S32 starting_item_count = mItemMap.size();
+        const S32 starting_item_count = static_cast<S32>(mItemMap.size());
 
         LLFolderViewFolder *parentp = dynamic_cast<LLFolderViewFolder*>(folder_view_item);
         bool done = true;
@@ -1251,7 +1259,7 @@ LLFolderViewItem* LLInventoryPanel::buildViewsTree(const LLUUID& id,
 
                 if (!mBuildChildrenViews
                     && mode == BUILD_TIMELIMIT
-                    && MIN_ITEMS_PER_CALL + starting_item_count < mItemMap.size())
+                    && MIN_ITEMS_PER_CALL + starting_item_count < static_cast<S32>(mItemMap.size()))
                 {
                     // Single folder view, check if we still have time
                     //
@@ -1326,7 +1334,7 @@ void LLInventoryPanel::openStartFolderOrMyInventory()
             && fchild->getViewModelItem()
             && fchild->getViewModelItem()->getName() == "My Inventory")
         {
-            fchild->setOpen(TRUE);
+            fchild->setOpen(true);
             break;
         }
     }
@@ -1348,13 +1356,13 @@ void LLInventoryPanel::openSelected()
 
 void LLInventoryPanel::unSelectAll()
 {
-    mFolderRoot.get()->setSelection(NULL, FALSE, FALSE);
+    mFolderRoot.get()->setSelection(NULL, false, false);
 }
 
 
-BOOL LLInventoryPanel::handleHover(S32 x, S32 y, MASK mask)
+bool LLInventoryPanel::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLView::handleHover(x, y, mask);
+    bool handled = LLView::handleHover(x, y, mask);
     if(handled)
     {
         // getCursor gets current cursor, setCursor sets next cursor
@@ -1370,10 +1378,10 @@ BOOL LLInventoryPanel::handleHover(S32 x, S32 y, MASK mask)
     {
         getWindow()->setCursor(UI_CURSOR_ARROW);
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLInventoryPanel::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLInventoryPanel::handleToolTip(S32 x, S32 y, MASK mask)
 {
     if (const LLFolderViewItem* hover_item_p = (!mFolderRoot.isDead()) ? mFolderRoot.get()->getHoveredItem() : nullptr)
     {
@@ -1398,19 +1406,19 @@ BOOL LLInventoryPanel::handleToolTip(S32 x, S32 y, MASK mask)
                     .delay_time(LLView::getTooltipTimeout())
                     .create_callback(boost::bind(&LLInspectTextureUtil::createInventoryToolTip, _1))
                     .create_params(params));
-            return TRUE;
+            return true;
         }
     }
     return LLPanel::handleToolTip(x, y, mask);
 }
 
-BOOL LLInventoryPanel::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLInventoryPanel::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                    EDragAndDropType cargo_type,
                                    void* cargo_data,
                                    EAcceptance* accept,
                                    std::string& tooltip_msg)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (mAcceptsDragAndDrop)
     {
@@ -1478,11 +1486,11 @@ bool LLInventoryPanel::addBadge(LLBadge * badge)
 
 void LLInventoryPanel::openAllFolders()
 {
-    mFolderRoot.get()->setOpenArrangeRecursively(TRUE, LLFolderViewFolder::RECURSE_DOWN);
+    mFolderRoot.get()->setOpenArrangeRecursively(true, LLFolderViewFolder::RECURSE_DOWN);
     mFolderRoot.get()->arrangeAll();
 }
 
-void LLInventoryPanel::setSelection(const LLUUID& obj_id, BOOL take_keyboard_focus)
+void LLInventoryPanel::setSelection(const LLUUID& obj_id, bool take_keyboard_focus)
 {
     // Don't select objects in COF (e.g. to prevent refocus when items are worn).
     const LLInventoryObject *obj = mInventory->getObject(obj_id);
@@ -1493,7 +1501,7 @@ void LLInventoryPanel::setSelection(const LLUUID& obj_id, BOOL take_keyboard_foc
     setSelectionByID(obj_id, take_keyboard_focus);
 }
 
-void LLInventoryPanel::setSelectCallback(const boost::function<void (const std::deque<LLFolderViewItem*>& items, BOOL user_action)>& cb)
+void LLInventoryPanel::setSelectCallback(const boost::function<void (const std::deque<LLFolderViewItem*>& items, bool user_action)>& cb)
 {
     if (mFolderRoot.get())
     {
@@ -1513,7 +1521,7 @@ LLInventoryPanel::selected_items_t LLInventoryPanel::getSelectedItems() const
     return mFolderRoot.get()->getSelectionList();
 }
 
-void LLInventoryPanel::onSelectionChange(const std::deque<LLFolderViewItem*>& items, BOOL user_action)
+void LLInventoryPanel::onSelectionChange(const std::deque<LLFolderViewItem*>& items, bool user_action)
 {
     // Schedule updating the folder view context menu when all selected items become complete (STORM-373).
     mCompletionObserver->reset();
@@ -1541,7 +1549,7 @@ void LLInventoryPanel::onSelectionChange(const std::deque<LLFolderViewItem*>& it
     LLFolderView* fv = mFolderRoot.get();
     if (fv->needsAutoRename()) // auto-selecting a new user-created asset and preparing to rename
     {
-        fv->setNeedsAutoRename(FALSE);
+        fv->setNeedsAutoRename(false);
         if (items.size()) // new asset is visible and selected
         {
             fv->startRenamingSelectedItem();
@@ -1665,7 +1673,7 @@ bool LLInventoryPanel::beginIMSession()
                                                 item_array,
                                                 LLInventoryModel::EXCLUDE_TRASH,
                                                 is_buddy);
-                S32 count = item_array.size();
+                auto count = item_array.size();
                 if(count > 0)
                 {
                     //*TODO by what to replace that?
@@ -1674,7 +1682,7 @@ bool LLInventoryPanel::beginIMSession()
                     // create the session
                     LLAvatarTracker& at = LLAvatarTracker::instance();
                     LLUUID id;
-                    for(S32 i = 0; i < count; ++i)
+                    for(size_t i = 0; i < count; ++i)
                     {
                         id = item_array.at(i)->getCreatorUUID();
                         if(at.isBuddyOnline(id))
@@ -1761,7 +1769,7 @@ void LLInventoryPanel::purgeSelectedItems()
     const std::set<LLFolderViewItem*> inventory_selected = mFolderRoot.get()->getSelectionList();
     if (inventory_selected.empty()) return;
     LLSD args;
-    S32 count = inventory_selected.size();
+    auto count = inventory_selected.size();
     std::vector<LLUUID> selected_items;
     for (std::set<LLFolderViewItem*>::const_iterator it = inventory_selected.begin(), end_it = inventory_selected.end();
         it != end_it;
@@ -1774,7 +1782,7 @@ void LLInventoryPanel::purgeSelectedItems()
         count += items.size() + cats.size();
         selected_items.push_back(item_id);
     }
-    args["COUNT"] = count;
+    args["COUNT"] = static_cast<S32>(count);
     LLNotificationsUtil::add("PurgeSelectedItems", args, LLSD(), boost::bind(callbackPurgeSelectedItems, _1, _2, selected_items));
 }
 
@@ -1813,7 +1821,7 @@ bool LLInventoryPanel::attachObject(const LLSD& userdata)
     return true;
 }
 
-BOOL LLInventoryPanel::getSinceLogoff()
+bool LLInventoryPanel::getSinceLogoff()
 {
     return getFilter().isSinceLogoff();
 }
@@ -1826,15 +1834,15 @@ void LLInventoryPanel::dumpSelectionInformation(void* user_data)
     iv->mFolderRoot.get()->dumpSelectionInformation();
 }
 
-BOOL is_inventorysp_active()
+bool is_inventorysp_active()
 {
     LLSidepanelInventory *sidepanel_inventory = LLFloaterSidePanelContainer::getPanel<LLSidepanelInventory>("inventory");
-    if (!sidepanel_inventory || !sidepanel_inventory->isInVisibleChain()) return FALSE;
+    if (!sidepanel_inventory || !sidepanel_inventory->isInVisibleChain()) return false;
     return sidepanel_inventory->isMainInventoryPanelActive();
 }
 
 // static
-LLInventoryPanel* LLInventoryPanel::getActiveInventoryPanel(BOOL auto_open)
+LLInventoryPanel* LLInventoryPanel::getActiveInventoryPanel(bool auto_open)
 {
     S32 z_min = S32_MAX;
     LLInventoryPanel* res = NULL;
@@ -1844,7 +1852,7 @@ LLInventoryPanel* LLInventoryPanel::getActiveInventoryPanel(BOOL auto_open)
     if (!floater_inventory)
     {
         LL_WARNS() << "Could not find My Inventory floater" << LL_ENDL;
-        return FALSE;
+        return nullptr;
     }
 
     LLSidepanelInventory *inventory_panel = LLFloaterSidePanelContainer::getPanel<LLSidepanelInventory>("inventory");
@@ -1873,7 +1881,7 @@ LLInventoryPanel* LLInventoryPanel::getActiveInventoryPanel(BOOL auto_open)
         // Make sure the floater is not minimized (STORM-438).
         if (active_inv_floaterp && active_inv_floaterp->isMinimized())
         {
-            active_inv_floaterp->setMinimized(FALSE);
+            active_inv_floaterp->setMinimized(false);
         }
     }
     else if (auto_open)
@@ -1956,7 +1964,7 @@ void LLInventoryPanel::openInventoryPanelAndSetSelection(bool auto_open, const L
             LLFloater* floater_inventory = LLFloaterReg::getInstance("inventory");
             if (floater_inventory)
             {
-                floater_inventory->setFocus(TRUE);
+                floater_inventory->setFocus(true);
             }
             active_panel->setSelection(obj_id, take_keyboard_focus);
         }
@@ -1991,7 +1999,7 @@ void LLInventoryPanel::addHideFolderType(LLFolderType::EType folder_type)
     getFilter().setFilterCategoryTypes(getFilter().getFilterCategoryTypes() & ~(1ULL << folder_type));
 }
 
-BOOL LLInventoryPanel::getIsHiddenFolderType(LLFolderType::EType folder_type) const
+bool LLInventoryPanel::getIsHiddenFolderType(LLFolderType::EType folder_type) const
 {
     return !(getFilter().getFilterCategoryTypes() & (1ULL << folder_type));
 }
@@ -2005,7 +2013,7 @@ void LLInventoryPanel::removeItemID(const LLUUID& id)
 {
     LLInventoryModel::cat_array_t categories;
     LLInventoryModel::item_array_t items;
-    gInventory.collectDescendents(id, categories, items, TRUE);
+    gInventory.collectDescendents(id, categories, items, true);
 
     mItemMap.erase(id);
 
@@ -2045,7 +2053,7 @@ LLFolderViewFolder* LLInventoryPanel::getFolderByID(const LLUUID& id)
 }
 
 
-void LLInventoryPanel::setSelectionByID( const LLUUID& obj_id, BOOL    take_keyboard_focus )
+void LLInventoryPanel::setSelectionByID( const LLUUID& obj_id, bool    take_keyboard_focus )
 {
     LLFolderViewItem* itemp = getItemByID(obj_id);
 
@@ -2060,7 +2068,7 @@ void LLInventoryPanel::setSelectionByID( const LLUUID& obj_id, BOOL    take_keyb
 
     if(itemp && itemp->getViewModelItem())
     {
-        itemp->arrangeAndSet(TRUE, take_keyboard_focus);
+        itemp->arrangeAndSet(true, take_keyboard_focus);
         mSelectThisID.setNull();
         mFocusSelection = false;
         return;
@@ -2093,9 +2101,9 @@ void LLInventoryPanel::doToSelected(const LLSD& userdata)
     return;
 }
 
-BOOL LLInventoryPanel::handleKeyHere( KEY key, MASK mask )
+bool LLInventoryPanel::handleKeyHere( KEY key, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     switch (key)
     {
     case KEY_RETURN:
@@ -2115,7 +2123,7 @@ BOOL LLInventoryPanel::handleKeyHere( KEY key, MASK mask )
                 }
             }
             LLInventoryAction::doToSelected(mInventory, mFolderRoot.get(), "open");
-            handled = TRUE;
+            handled = true;
         }
         break;
     case KEY_DELETE:
@@ -2127,7 +2135,7 @@ BOOL LLInventoryPanel::handleKeyHere( KEY key, MASK mask )
         if (isSelectionRemovable() && (mask == MASK_NONE))
         {
             LLInventoryAction::doToSelected(mInventory, mFolderRoot.get(), "delete");
-            handled = TRUE;
+            handled = true;
         }
         break;
     }
@@ -2238,7 +2246,7 @@ void LLInventorySingleFolderPanel::onFocusReceived()
             if (folder_view->getVisible())
             {
                 const LLFolderViewModelItemInventory* modelp = static_cast<const LLFolderViewModelItemInventory*>(folder_view->getViewModelItem());
-                setSelectionByID(modelp->getUUID(), TRUE);
+                setSelectionByID(modelp->getUUID(), true);
                 // quick and dirty fix: don't scroll on switching focus
                 // todo: better 'tab' support, one that would work for LLInventoryPanel
                 mFolderRoot.get()->stopAutoScollining();
@@ -2259,7 +2267,7 @@ void LLInventorySingleFolderPanel::onFocusReceived()
             if (item_view->getVisible())
             {
                 const LLFolderViewModelItemInventory* modelp = static_cast<const LLFolderViewModelItemInventory*>(item_view->getViewModelItem());
-                setSelectionByID(modelp->getUUID(), TRUE);
+                setSelectionByID(modelp->getUUID(), true);
                 mFolderRoot.get()->stopAutoScollining();
                 break;
             }
@@ -2485,13 +2493,13 @@ void LLAssetFilteredInventoryPanel::initFromParams(const Params& p)
     getFilter().setFilterNoMarketplaceFolder();
 }
 
-BOOL LLAssetFilteredInventoryPanel::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLAssetFilteredInventoryPanel::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
     EDragAndDropType cargo_type,
     void* cargo_data,
     EAcceptance* accept,
     std::string& tooltip_msg)
 {
-    BOOL result = FALSE;
+    bool result = false;
 
     if (mAcceptsDragAndDrop)
     {
diff --git a/indra/newview/llinventorypanel.h b/indra/newview/llinventorypanel.h
index c6984fb53b..6dead2cf6d 100644
--- a/indra/newview/llinventorypanel.h
+++ b/indra/newview/llinventorypanel.h
@@ -161,16 +161,16 @@ public:
     LLFolderViewModelInventory& getRootViewModel() { return mInventoryViewModel; }
 
     // LLView methods
-    /*virtual*/ void onVisibilityChange(BOOL new_visibility) override;
+    /*virtual*/ void onVisibilityChange(bool new_visibility) override;
     void draw() override;
-    /*virtual*/ BOOL handleKeyHere( KEY key, MASK mask ) override;
-    BOOL handleHover(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    /*virtual*/ bool handleKeyHere( KEY key, MASK mask ) override;
+    bool handleHover(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                    EDragAndDropType cargo_type,
                                    void* cargo_data,
                                    EAcceptance* accept,
                                    std::string& tooltip_msg) override;
-                BOOL handleToolTip(S32 x, S32 y, MASK mask) override;
+                bool handleToolTip(S32 x, S32 y, MASK mask) override;
     // LLUICtrl methods
      /*virtual*/ void onFocusLost() override;
      /*virtual*/ void onFocusReceived() override;
@@ -181,8 +181,8 @@ public:
 
     // Call this method to set the selection.
     void openAllFolders();
-    void setSelection(const LLUUID& obj_id, BOOL take_keyboard_focus);
-    void setSelectCallback(const boost::function<void (const std::deque<LLFolderViewItem*>& items, BOOL user_action)>& cb);
+    void setSelection(const LLUUID& obj_id, bool take_keyboard_focus);
+    void setSelectCallback(const boost::function<void (const std::deque<LLFolderViewItem*>& items, bool user_action)>& cb);
     void clearSelection();
     selected_items_t getSelectedItems() const;
 
@@ -198,10 +198,10 @@ public:
     void setFilterSettingsTypes(U64 filter);
     void setFilterSubString(const std::string& string);
     const std::string getFilterSubString();
-    void setSinceLogoff(BOOL sl);
+    void setSinceLogoff(bool sl);
     void setHoursAgo(U32 hours);
     void setDateSearchDirection(U32 direction);
-    BOOL getSinceLogoff();
+    bool getSinceLogoff();
     void setFilterLinks(U64 filter_links);
     void setSearchType(LLInventoryFilter::ESearchType type);
     LLInventoryFilter::ESearchType getSearchType();
@@ -216,7 +216,7 @@ public:
     bool getAllowDropOnRoot() { return mParams.allow_drop_on_root; }
     bool areViewsInitialized() { return mViewsInitialized == VIEWS_INITIALIZED && mFolderRoot.get() && !mFolderRoot.get()->needsArrange(); }
 
-    void onSelectionChange(const std::deque<LLFolderViewItem*> &items, BOOL user_action);
+    void onSelectionChange(const std::deque<LLFolderViewItem*> &items, bool user_action);
 
     LLHandle<LLInventoryPanel> getInventoryPanelHandle() const { return getDerivedHandle<LLInventoryPanel>(); }
 
@@ -242,7 +242,7 @@ public:
 
     // Find whichever inventory panel is active / on top.
     // "Auto_open" determines if we open an inventory panel if none are open.
-    static LLInventoryPanel *getActiveInventoryPanel(BOOL auto_open = TRUE);
+    static LLInventoryPanel *getActiveInventoryPanel(bool auto_open = true);
 
     static void openInventoryPanelAndSetSelection(bool auto_open,
                                                     const LLUUID& obj_id,
@@ -254,7 +254,7 @@ public:
     void removeItemID(const LLUUID& id);
     LLFolderViewItem* getItemByID(const LLUUID& id);
     LLFolderViewFolder* getFolderByID(const LLUUID& id);
-    void setSelectionByID(const LLUUID& obj_id, BOOL take_keyboard_focus);
+    void setSelectionByID(const LLUUID& obj_id, bool take_keyboard_focus);
     void updateSelection();
 
     void setSuppressOpenItemAction(bool supress_open_item) { mSuppressOpenItemAction = supress_open_item; }
@@ -364,13 +364,13 @@ protected:
     virtual bool                typedViewsFilter(const LLUUID& id, LLInventoryObject const* objectp) { return true; }
 
     virtual void                itemChanged(const LLUUID& item_id, U32 mask, const LLInventoryObject* model_item);
-    BOOL                getIsHiddenFolderType(LLFolderType::EType folder_type) const;
+    bool                getIsHiddenFolderType(LLFolderType::EType folder_type) const;
 
     virtual LLFolderView * createFolderRoot(LLUUID root_id );
     virtual LLFolderViewFolder* createFolderViewFolder(LLInvFVBridge * bridge, bool allow_drop);
     virtual LLFolderViewItem*   createFolderViewItem(LLInvFVBridge * bridge);
 
-    boost::function<void(const std::deque<LLFolderViewItem*>& items, BOOL user_action)> mSelectionCallback;
+    boost::function<void(const std::deque<LLFolderViewItem*>& items, bool user_action)> mSelectionCallback;
 private:
     // buildViewsTree does not include some checks and is meant
     // for recursive use, use buildNewViews() for first call
@@ -471,7 +471,7 @@ protected:
 public:
     ~LLAssetFilteredInventoryPanel() {}
 
-    /*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    /*virtual*/ bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
         EDragAndDropType cargo_type,
         void* cargo_data,
         EAcceptance* accept,
diff --git a/indra/newview/lljoystickbutton.cpp b/indra/newview/lljoystickbutton.cpp
index 70a8020d78..00dbf9a9f8 100644
--- a/indra/newview/lljoystickbutton.cpp
+++ b/indra/newview/lljoystickbutton.cpp
@@ -79,7 +79,7 @@ LLJoystick::LLJoystick(const LLJoystick::Params& p)
     mVertSlopFar(0),
     mHorizSlopNear(0),
     mHorizSlopFar(0),
-    mHeldDown(FALSE),
+    mHeldDown(false),
     mHeldDownTimer(),
     mInitialQuadrant(p.quadrant)
 {
@@ -160,7 +160,7 @@ bool LLJoystick::pointInCenterDot(S32 x, S32 y, S32 radius) const
     return in_center_circle;
 }
 
-BOOL LLJoystick::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLJoystick::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     //LL_INFOS() << "joystick mouse down " << x << ", " << y << LL_ENDL;
     bool handles = false;
@@ -177,14 +177,14 @@ BOOL LLJoystick::handleMouseDown(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLJoystick::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLJoystick::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     // LL_INFOS() << "joystick mouse up " << x << ", " << y << LL_ENDL;
 
     if( hasMouseCapture() )
     {
         mLastMouse.set(x, y);
-        mHeldDown = FALSE;
+        mHeldDown = false;
         onMouseUp();
     }
 
@@ -192,7 +192,7 @@ BOOL LLJoystick::handleMouseUp(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLJoystick::handleHover(S32 x, S32 y, MASK mask)
+bool LLJoystick::handleHover(S32 x, S32 y, MASK mask)
 {
     if( hasMouseCapture() )
     {
@@ -220,7 +220,7 @@ void LLJoystick::onBtnHeldDown(void *userdata)
     LLJoystick *self = (LLJoystick *)userdata;
     if (self)
     {
-        self->mHeldDown = TRUE;
+        self->mHeldDown = true;
         self->onHeldDown();
     }
 }
@@ -419,11 +419,11 @@ void LLJoystickAgentSlide::onHeldDown()
 
 LLJoystickCameraRotate::LLJoystickCameraRotate(const LLJoystickCameraRotate::Params& p)
 :   LLJoystick(p),
-    mInLeft( FALSE ),
-    mInTop( FALSE ),
-    mInRight( FALSE ),
-    mInBottom( FALSE ),
-    mInCenter( FALSE )
+    mInLeft( false ),
+    mInTop( false ),
+    mInRight( false ),
+    mInBottom( false ),
+    mInCenter( false )
 {
     mCenterImageName = "Cam_Rotate_Center";
 }
@@ -444,9 +444,9 @@ void LLJoystickCameraRotate::updateSlop()
 }
 
 
-BOOL LLJoystickCameraRotate::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLJoystickCameraRotate::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    gAgent.setMovementLocked(TRUE);
+    gAgent.setMovementLocked(true);
     updateSlop();
 
     // Set initial offset based on initial click location
@@ -461,7 +461,7 @@ BOOL LLJoystickCameraRotate::handleMouseDown(S32 x, S32 y, MASK mask)
         mInitialOffset.mX = 0;
         mInitialOffset.mY = 0;
         mInitialQuadrant = JQ_ORIGIN;
-        mInCenter = TRUE;
+        mInCenter = true;
 
         resetJoystickCamera();
     }
@@ -497,18 +497,18 @@ BOOL LLJoystickCameraRotate::handleMouseDown(S32 x, S32 y, MASK mask)
     return LLJoystick::handleMouseDown(x, y, mask);
 }
 
-BOOL LLJoystickCameraRotate::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLJoystickCameraRotate::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    gAgent.setMovementLocked(FALSE);
-    mInCenter = FALSE;
+    gAgent.setMovementLocked(false);
+    mInCenter = false;
     return LLJoystick::handleMouseUp(x, y, mask);
 }
 
-BOOL LLJoystickCameraRotate::handleHover(S32 x, S32 y, MASK mask)
+bool LLJoystickCameraRotate::handleHover(S32 x, S32 y, MASK mask)
 {
     if (!pointInCenterDot(x, y, CENTER_DOT_RADIUS))
     {
-        mInCenter = FALSE;
+        mInCenter = false;
     }
 
     return LLJoystick::handleHover(x, y, mask);
@@ -568,7 +568,7 @@ F32 LLJoystickCameraRotate::getOrbitRate()
 
 
 // Only used for drawing
-void LLJoystickCameraRotate::setToggleState( BOOL left, BOOL top, BOOL right, BOOL bottom )
+void LLJoystickCameraRotate::setToggleState( bool left, bool top, bool right, bool bottom )
 {
     mInLeft = left;
     mInTop = top;
@@ -737,7 +737,7 @@ LLJoystickQuaternion::LLJoystickQuaternion(const LLJoystickQuaternion::Params &p
     }
 }
 
-void LLJoystickQuaternion::setToggleState(BOOL left, BOOL top, BOOL right, BOOL bottom)
+void LLJoystickQuaternion::setToggleState(bool left, bool top, bool right, bool bottom)
 {
     mInLeft = left;
     mInTop = top;
@@ -745,7 +745,7 @@ void LLJoystickQuaternion::setToggleState(BOOL left, BOOL top, BOOL right, BOOL
     mInBottom = bottom;
 }
 
-BOOL LLJoystickQuaternion::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLJoystickQuaternion::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     updateSlop();
 
@@ -788,7 +788,7 @@ BOOL LLJoystickQuaternion::handleMouseDown(S32 x, S32 y, MASK mask)
     return LLJoystick::handleMouseDown(x, y, mask);
 }
 
-BOOL LLJoystickQuaternion::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLJoystickQuaternion::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     return LLJoystick::handleMouseUp(x, y, mask);
 }
diff --git a/indra/newview/lljoystickbutton.h b/indra/newview/lljoystickbutton.h
index 053cf0348a..12394ca63e 100644
--- a/indra/newview/lljoystickbutton.h
+++ b/indra/newview/lljoystickbutton.h
@@ -63,9 +63,9 @@ public:
     };
     LLJoystick(const Params&);
 
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
 
     virtual void    onMouseUp() {}
     virtual void    onHeldDown() = 0;
@@ -100,7 +100,7 @@ protected:
     S32                 mVertSlopFar;               // where the slop regions end
     S32                 mHorizSlopNear;             // where the slop regions end
     S32                 mHorizSlopFar;              // where the slop regions end
-    BOOL                mHeldDown;
+    bool                mHeldDown;
     LLFrameTimer        mHeldDownTimer;
 };
 
@@ -145,11 +145,11 @@ public:
 
     LLJoystickCameraRotate(const LLJoystickCameraRotate::Params&);
 
-    virtual void    setToggleState( BOOL left, BOOL top, BOOL right, BOOL bottom );
+    virtual void    setToggleState( bool left, bool top, bool right, bool bottom );
 
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
     virtual void    onHeldDown();
     virtual void    resetJoystickCamera();
     virtual void    draw();
@@ -160,11 +160,11 @@ protected:
     void            drawRotatedImage( LLPointer<LLUIImage> image, S32 rotations );
 
 protected:
-    BOOL            mInLeft;
-    BOOL            mInTop;
-    BOOL            mInRight;
-    BOOL            mInBottom;
-    BOOL            mInCenter;
+    bool            mInLeft;
+    bool            mInTop;
+    bool            mInRight;
+    bool            mInBottom;
+    bool            mInCenter;
 
     std::string     mCenterImageName;
 };
@@ -199,10 +199,10 @@ public:
 
     LLJoystickQuaternion(const LLJoystickQuaternion::Params &);
 
-    virtual void    setToggleState(BOOL left, BOOL top, BOOL right, BOOL bottom);
+    virtual void    setToggleState(bool left, bool top, bool right, bool bottom);
 
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
     virtual void    onHeldDown();
     virtual void    draw();
 
@@ -214,10 +214,10 @@ protected:
     virtual void    updateSlop();
     void            drawRotatedImage(LLPointer<LLUIImage> image, S32 rotations);
 
-    BOOL            mInLeft;
-    BOOL            mInTop;
-    BOOL            mInRight;
-    BOOL            mInBottom;
+    bool            mInLeft;
+    bool            mInTop;
+    bool            mInRight;
+    bool            mInBottom;
 
     S32             mXAxisIndex;
     S32             mYAxisIndex;
diff --git a/indra/newview/llkeyconflict.cpp b/indra/newview/llkeyconflict.cpp
index af70025647..666ab4f5d0 100644
--- a/indra/newview/llkeyconflict.cpp
+++ b/indra/newview/llkeyconflict.cpp
@@ -476,8 +476,8 @@ void LLKeyConflictHandler::saveToSettings(bool temporary)
                 // so make sure to cleanup.
                 // Also this helps in keeping file small.
                 iter->second.mKeyBind.trimEmpty();
-                U32 size = iter->second.mKeyBind.getDataCount();
-                for (U32 i = 0; i < size; ++i)
+                auto size = iter->second.mKeyBind.getDataCount();
+                for (size_t i = 0; i < size; ++i)
                 {
                     if (iter->first.empty())
                     {
@@ -491,7 +491,7 @@ void LLKeyConflictHandler::saveToSettings(bool temporary)
                         continue;
                     }
 
-                    LLKeyData data = key.mKeyBind.getKeyData(i);
+                    LLKeyData data = key.mKeyBind.getKeyData(static_cast<U32>(i));
                     // Still write empty LLKeyData to make sure we will maintain UI position
                     if (data.mKey == KEY_NONE)
                     {
diff --git a/indra/newview/lllandmarkactions.cpp b/indra/newview/lllandmarkactions.cpp
index a5f53900ff..73425e9f4c 100644
--- a/indra/newview/lllandmarkactions.cpp
+++ b/indra/newview/lllandmarkactions.cpp
@@ -84,12 +84,12 @@ class LLFetchLandmarksByName : public LLInventoryCollectFunctor
 {
 private:
     std::string name;
-    BOOL use_substring;
+    bool use_substring;
     //this member will be contain copy of founded items to keep the result unique
     std::set<std::string> check_duplicate;
 
 public:
-LLFetchLandmarksByName(std::string &landmark_name, BOOL if_use_substring)
+LLFetchLandmarksByName(std::string &landmark_name, bool if_use_substring)
 :name(landmark_name),
 use_substring(if_use_substring)
     {
@@ -178,7 +178,7 @@ static void fetch_landmarks(LLInventoryModel::cat_array_t& cats,
         add);
 }
 
-LLInventoryModel::item_array_t LLLandmarkActions::fetchLandmarksByName(std::string& name, BOOL use_substring)
+LLInventoryModel::item_array_t LLLandmarkActions::fetchLandmarksByName(std::string& name, bool use_substring)
 {
     LLInventoryModel::cat_array_t cats;
     LLInventoryModel::item_array_t items;
diff --git a/indra/newview/lllandmarkactions.h b/indra/newview/lllandmarkactions.h
index 29ffc1dcee..1abf10e110 100644
--- a/indra/newview/lllandmarkactions.h
+++ b/indra/newview/lllandmarkactions.h
@@ -45,7 +45,7 @@ public:
     /**
      * @brief Fetches landmark LLViewerInventoryItems for the given landmark name.
      */
-    static LLInventoryModel::item_array_t fetchLandmarksByName(std::string& name, BOOL if_use_substring);
+    static LLInventoryModel::item_array_t fetchLandmarksByName(std::string& name, bool if_use_substring);
     /**
      * @brief Checks whether landmark exists for current agent position.
      */
diff --git a/indra/newview/lllandmarklist.cpp b/indra/newview/lllandmarklist.cpp
index 6ec77bca86..3fa0ab99f3 100644
--- a/indra/newview/lllandmarklist.cpp
+++ b/indra/newview/lllandmarklist.cpp
@@ -118,7 +118,7 @@ void LLLandmarkList::processGetAssetReply(
             file.read((U8*)&buffer[0], file_length);
             buffer[file_length] = 0;
 
-            LLLandmark* landmark = LLLandmark::constructFromString(&buffer[0], buffer.size());
+            LLLandmark* landmark = LLLandmark::constructFromString(&buffer[0], static_cast<S32>(buffer.size()));
             if (landmark)
             {
                 gLandmarkList.mList[uuid] = landmark;
@@ -176,12 +176,12 @@ void LLLandmarkList::processGetAssetReply(
     }
 }
 
-BOOL LLLandmarkList::isAssetInLoadedCallbackMap(const LLUUID& asset_uuid)
+bool LLLandmarkList::isAssetInLoadedCallbackMap(const LLUUID& asset_uuid)
 {
     return mLoadedCallbackMap.find(asset_uuid) != mLoadedCallbackMap.end();
 }
 
-BOOL LLLandmarkList::assetExists(const LLUUID& asset_uuid)
+bool LLLandmarkList::assetExists(const LLUUID& asset_uuid)
 {
     return mList.count(asset_uuid) != 0 || mBadList.count(asset_uuid) != 0;
 }
diff --git a/indra/newview/lllandmarklist.h b/indra/newview/lllandmarklist.h
index bea5c84a9b..508148abde 100644
--- a/indra/newview/lllandmarklist.h
+++ b/indra/newview/lllandmarklist.h
@@ -49,7 +49,7 @@ public:
     //const LLLandmark* getFirst()  { return mList.getFirstData(); }
     //const LLLandmark* getNext()   { return mList.getNextData(); }
 
-    BOOL assetExists(const LLUUID& asset_uuid);
+    bool assetExists(const LLUUID& asset_uuid);
     LLLandmark* getAsset(const LLUUID& asset_uuid, loaded_callback_t cb = NULL);
     static void processGetAssetReply(
         const LLUUID& uuid,
@@ -58,9 +58,9 @@ public:
         S32 status,
         LLExtStat ext_status );
 
-    // Returns TRUE if loading the landmark with given asset_uuid has been requested
+    // Returns true if loading the landmark with given asset_uuid has been requested
     // but is not complete yet.
-    BOOL isAssetInLoadedCallbackMap(const LLUUID& asset_uuid);
+    bool isAssetInLoadedCallbackMap(const LLUUID& asset_uuid);
 
 protected:
     void onRegionHandle(const LLUUID& landmark_id);
diff --git a/indra/newview/lllegacyatmospherics.cpp b/indra/newview/lllegacyatmospherics.cpp
index e5b681106a..1403845d07 100644
--- a/indra/newview/lllegacyatmospherics.cpp
+++ b/indra/newview/lllegacyatmospherics.cpp
@@ -180,7 +180,7 @@ LLAtmospherics::LLAtmospherics()
     mWorldScale(1.f)
 {
     /// WL PARAMS
-    mInitialized = FALSE;
+    mInitialized = false;
     mAmbientScale = gSavedSettings.getF32("SkyAmbientScale");
     mNightColorShift = gSavedSettings.getColor3("SkyNightColorShift");
     mFogColor.mV[VRED] = mFogColor.mV[VGREEN] = mFogColor.mV[VBLUE] = 0.5f;
@@ -505,7 +505,7 @@ void LLAtmospherics::updateFog(const F32 distance, const LLVector3& tosun_in)
 }
 
 // Functions used a lot.
-F32 color_norm_pow(LLColor3& col, F32 e, BOOL postmultiply)
+F32 color_norm_pow(LLColor3& col, F32 e, bool postmultiply)
 {
     F32 mv = color_max(col);
     if (0 == mv)
diff --git a/indra/newview/lllegacyatmospherics.h b/indra/newview/lllegacyatmospherics.h
index ade6ed9569..17a01c1e04 100644
--- a/indra/newview/lllegacyatmospherics.h
+++ b/indra/newview/lllegacyatmospherics.h
@@ -267,7 +267,7 @@ protected:
     F32                 mHazeConcentration;
     F32                 mCloudDensity;
     F32                 mWind;
-    BOOL                mInitialized;
+    bool                mInitialized;
     LLVector3           mLastLightingDirection;
     LLColor3            mLastTotalAmbient;
     F32                 mAmbientScale;
diff --git a/indra/newview/lllistbrowser.cpp b/indra/newview/lllistbrowser.cpp
deleted file mode 100644
index 143415adee..0000000000
--- a/indra/newview/lllistbrowser.cpp
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * @file lllistbrowser.cpp
- * @brief UI widget showing a search filter, list view, icon action buttons,
- * and verb action buttons, as usually embedded in the side tray.
- *
- * $LicenseInfo:firstyear=2009&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-#include "llviewerprecompiledheaders.h"
-
-#include "lllistbrowser.h"
-
-// TODO
diff --git a/indra/newview/lllistbrowser.h b/indra/newview/lllistbrowser.h
deleted file mode 100644
index 9cd5c730a9..0000000000
--- a/indra/newview/lllistbrowser.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/**
- * @file lllistbrowser.h
- * @brief UI widget showing a search filter, list view, icon action buttons,
- * and verb action buttons, as usually embedded in the side tray.
- *
- * $LicenseInfo:firstyear=2009&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-#ifndef LLLISTBROWSER_H
-#define LLLISTBROWSER_H
-
-#endif // LLLISTBROWSER_H
diff --git a/indra/newview/lllocalbitmaps.cpp b/indra/newview/lllocalbitmaps.cpp
index 5b7243ece2..6ab5e05b7d 100644
--- a/indra/newview/lllocalbitmaps.cpp
+++ b/indra/newview/lllocalbitmaps.cpp
@@ -72,7 +72,7 @@
 /*=======================================*/
 
 static const F32 LL_LOCAL_TIMER_HEARTBEAT   = 3.0;
-static const BOOL LL_LOCAL_USE_MIPMAPS      = true;
+static const bool LL_LOCAL_USE_MIPMAPS      = true;
 static const S32 LL_LOCAL_DISCARD_LEVEL     = 0;
 static const bool LL_LOCAL_SLAM_FOR_DEBUG   = true;
 static const bool LL_LOCAL_REPLACE_ON_DEL   = true;
@@ -438,7 +438,7 @@ std::vector<LLViewerObject*> LLLocalBitmap::prepUpdateObjects(LLUUID old_id, U32
     std::vector<LLViewerObject*> obj_list;
     LLViewerFetchedTexture* old_texture = gTextureList.findImage(old_id, TEX_LIST_STANDARD);
 
-    for(U32 face_iterator = 0; face_iterator < old_texture->getNumFaces(channel); face_iterator++)
+    for (S32 face_iterator = 0; face_iterator < old_texture->getNumFaces(channel); face_iterator++)
     {
         // getting an object from a face
         LLFace* face_to_object = (*old_texture->getFaceList(channel))[face_iterator];
@@ -554,7 +554,7 @@ void LLLocalBitmap::updateUserPrims(LLUUID old_id, LLUUID new_id, U32 channel)
 void LLLocalBitmap::updateUserVolumes(LLUUID old_id, LLUUID new_id, U32 channel)
 {
     LLViewerFetchedTexture* old_texture = gTextureList.findImage(old_id, TEX_LIST_STANDARD);
-    for (U32 volume_iter = 0; volume_iter < old_texture->getNumVolumes(channel); volume_iter++)
+    for (S32 volume_iter = 0; volume_iter < old_texture->getNumVolumes(channel); volume_iter++)
     {
         LLVOVolume* volobjp = (*old_texture->getVolumeList(channel))[volume_iter];
         switch (channel)
@@ -579,7 +579,7 @@ void LLLocalBitmap::updateUserVolumes(LLUUID old_id, LLUUID new_id, U32 channel)
                 LLSculptParams* old_params = (LLSculptParams*)object->getParameterEntry(LLNetworkData::PARAMS_SCULPT);
                 LLSculptParams new_params(*old_params);
                 new_params.setSculptTexture(new_id, (*old_params).getSculptType());
-                object->setParameterEntry(LLNetworkData::PARAMS_SCULPT, new_params, TRUE);
+                object->setParameterEntry(LLNetworkData::PARAMS_SCULPT, new_params, true);
             }
         }
     }
@@ -613,7 +613,7 @@ void LLLocalBitmap::updateUserLayers(LLUUID old_id, LLUUID new_id, LLWearableTyp
                         U32 index;
                         if (gAgentWearables.getWearableIndex(wearable,index))
                         {
-                            gAgentAvatarp->setLocalTexture(reg_texind, gTextureList.getImage(new_id), FALSE, index);
+                            gAgentAvatarp->setLocalTexture(reg_texind, gTextureList.getImage(new_id), false, index);
                             gAgentAvatarp->wearableUpdated(type);
                             /* telling the manager to rebake once update cycle is fully done */
                             LLLocalBitmapMgr::getInstance()->setNeedsRebake();
@@ -1009,10 +1009,10 @@ bool LLLocalBitmapTimer::isRunning()
     return mEventTimer.getStarted();
 }
 
-BOOL LLLocalBitmapTimer::tick()
+bool LLLocalBitmapTimer::tick()
 {
     LLLocalBitmapMgr::getInstance()->doUpdates();
-    return FALSE;
+    return false;
 }
 
 /*=======================================*/
@@ -1091,8 +1091,9 @@ bool LLLocalBitmapMgr::checkTextureDimensions(std::string filename)
         return false;
     }
 
-    S32 max_width = gSavedSettings.getS32("max_texture_dimension_X");
-    S32 max_height = gSavedSettings.getS32("max_texture_dimension_Y");
+    // allow loading up to 4x max rez but implicitly downrez to max rez before upload
+    S32 max_width = gSavedSettings.getS32("max_texture_dimension_X")*4;
+    S32 max_height = gSavedSettings.getS32("max_texture_dimension_Y")*4;
 
     if ((image_info.getWidth() > max_width) || (image_info.getHeight() > max_height))
     {
@@ -1137,6 +1138,20 @@ void LLLocalBitmapMgr::delUnit(LLUUID tracking_id)
     }
 }
 
+LLUUID LLLocalBitmapMgr::getTrackingID(const LLUUID& world_id) const
+{
+    for (local_list_citer iter = mBitmapList.begin(); iter != mBitmapList.end(); iter++)
+    {
+        LLLocalBitmap* unit = *iter;
+        if (unit->getWorldID() == world_id)
+        {
+            return unit->getTrackingID();
+        }
+    }
+
+    return LLUUID::null;
+}
+
 LLUUID LLLocalBitmapMgr::getWorldID(const LLUUID &tracking_id) const
 {
     LLUUID world_id = LLUUID::null;
diff --git a/indra/newview/lllocalbitmaps.h b/indra/newview/lllocalbitmaps.h
index 5dbc514f56..e169f96e70 100644
--- a/indra/newview/lllocalbitmaps.h
+++ b/indra/newview/lllocalbitmaps.h
@@ -121,7 +121,7 @@ class LLLocalBitmapTimer : public LLEventTimer
         void startTimer();
         void stopTimer();
         bool isRunning();
-        BOOL tick();
+        bool tick();
 
 };
 
@@ -135,6 +135,7 @@ public:
     void         delUnit(LLUUID tracking_id);
     bool        checkTextureDimensions(std::string filename);
 
+    LLUUID       getTrackingID(const LLUUID& world_id) const;
     LLUUID       getWorldID(const LLUUID &tracking_id) const;
     bool         isLocal(const LLUUID& world_id) const;
     std::string  getFilename(const LLUUID &tracking_id) const;
diff --git a/indra/newview/lllocalgltfmaterials.cpp b/indra/newview/lllocalgltfmaterials.cpp
index 58f06d7748..fab18f2d26 100644
--- a/indra/newview/lllocalgltfmaterials.cpp
+++ b/indra/newview/lllocalgltfmaterials.cpp
@@ -177,6 +177,8 @@ bool LLLocalGLTFMaterial::updateSelf()
                         }
                     }
 
+                    materialBegin();
+                    materialComplete(true);
                     updated = true;
                 }
 
@@ -201,6 +203,8 @@ bool LLLocalGLTFMaterial::updateSelf()
                         LLNotificationsUtil::add("LocalBitmapsUpdateFailedFinal", notif_args);
 
                         mLinkStatus = LS_BROKEN;
+                        materialBegin();
+                        materialComplete(false);
                     }
                 }
             }
@@ -218,6 +222,8 @@ bool LLLocalGLTFMaterial::updateSelf()
             LLNotificationsUtil::add("LocalBitmapsUpdateFileNotFound", notif_args);
 
             mLinkStatus = LS_BROKEN;
+            materialBegin();
+            materialComplete(false);
         }
     }
 
@@ -301,11 +307,11 @@ bool LLLocalGLTFMaterialTimer::isRunning()
     return mEventTimer.getStarted();
 }
 
-BOOL LLLocalGLTFMaterialTimer::tick()
+bool LLLocalGLTFMaterialTimer::tick()
 {
     // todo: do on idle? No point in timer
     LLLocalGLTFMaterialMgr::getInstance()->doUpdates();
-    return FALSE;
+    return false;
 }
 
 /*=======================================*/
@@ -340,19 +346,19 @@ S32 LLLocalGLTFMaterialMgr::addUnit(const std::string& filename)
     tinygltf::Model model;
     LLTinyGLTFHelper::loadModel(filename, model);
 
-    S32 materials_in_file = model.materials.size();
+    auto materials_in_file = model.materials.size();
     if (materials_in_file <= 0)
     {
         return 0;
     }
 
     S32 loaded_materials = 0;
-    for (S32 i = 0; i < materials_in_file; i++)
+    for (size_t i = 0; i < materials_in_file; i++)
     {
         // Todo: this is rather inefficient, files will be spammed with
         // separate loads and date checks, find a way to improve this.
         // May be doUpdates() should be checking individual files.
-        LLPointer<LLLocalGLTFMaterial> unit = new LLLocalGLTFMaterial(filename, i);
+        LLPointer<LLLocalGLTFMaterial> unit = new LLLocalGLTFMaterial(filename, static_cast<S32>(i));
 
         // load material from file
         if (unit->updateSelf())
diff --git a/indra/newview/lllocalgltfmaterials.h b/indra/newview/lllocalgltfmaterials.h
index a85bbf33ce..b806b54508 100644
--- a/indra/newview/lllocalgltfmaterials.h
+++ b/indra/newview/lllocalgltfmaterials.h
@@ -90,7 +90,7 @@ public:
     void startTimer();
     void stopTimer();
     bool isRunning();
-    BOOL tick();
+    bool tick();
 };
 
 class LLLocalGLTFMaterialMgr : public LLSingleton<LLLocalGLTFMaterialMgr>
diff --git a/indra/newview/lllocationinputctrl.cpp b/indra/newview/lllocationinputctrl.cpp
index aa3eb3993a..54dd5792a0 100644
--- a/indra/newview/lllocationinputctrl.cpp
+++ b/indra/newview/lllocationinputctrl.cpp
@@ -454,7 +454,7 @@ LLLocationInputCtrl::~LLLocationInputCtrl()
     mLocationHistoryConnection.disconnect();
 }
 
-void LLLocationInputCtrl::setEnabled(BOOL enabled)
+void LLLocationInputCtrl::setEnabled(bool enabled)
 {
     LLComboBox::setEnabled(enabled);
     mAddLandmarkBtn->setEnabled(enabled);
@@ -467,7 +467,7 @@ void LLLocationInputCtrl::hideList()
         focusTextEntry();
 }
 
-BOOL LLLocationInputCtrl::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLLocationInputCtrl::handleToolTip(S32 x, S32 y, MASK mask)
 {
 
     if(mAddLandmarkBtn->parentPointInView(x,y))
@@ -495,15 +495,15 @@ BOOL LLLocationInputCtrl::handleToolTip(S32 x, S32 y, MASK mask)
             }
         }
 
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLLocationInputCtrl::handleKeyHere(KEY key, MASK mask)
+bool LLLocationInputCtrl::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL result = LLComboBox::handleKeyHere(key, mask);
+    bool result = LLComboBox::handleKeyHere(key, mask);
 
     if (key == KEY_DOWN && hasFocus() && mList->getItemCount() != 0 && !mList->getVisible())
     {
@@ -516,7 +516,7 @@ BOOL LLLocationInputCtrl::handleKeyHere(KEY key, MASK mask)
 void LLLocationInputCtrl::onTextEntry(LLLineEditor* line_editor)
 {
     KEY key = gKeyboard->currentKey();
-    MASK mask = gKeyboard->currentMask(TRUE);
+    MASK mask = gKeyboard->currentMask(true);
 
     // Typing? (moving cursor should not affect showing the list)
     bool typing = mask != MASK_CONTROL && key != KEY_LEFT && key != KEY_RIGHT && key != KEY_HOME && key != KEY_END;
@@ -556,16 +556,16 @@ void LLLocationInputCtrl::setText(const LLStringExplicit& text)
     {
         mTextEntry->setText(text);
     }
-    mHasAutocompletedText = FALSE;
+    mHasAutocompletedText = false;
 }
 
-void LLLocationInputCtrl::setFocus(BOOL b)
+void LLLocationInputCtrl::setFocus(bool b)
 {
     LLComboBox::setFocus(b);
 
     if (mTextEntry && b && !mList->getVisible())
     {
-        mTextEntry->setFocus(TRUE);
+        mTextEntry->setFocus(true);
     }
 }
 
@@ -612,7 +612,7 @@ void LLLocationInputCtrl::draw()
     LLComboBox::draw();
 }
 
-void LLLocationInputCtrl::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLLocationInputCtrl::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLComboBox::reshape(width, height, called_from_parent);
 
@@ -698,7 +698,7 @@ void LLLocationInputCtrl::onLocationPrearrange(const LLSD& data)
     //Let's add landmarks to the top of the list if any
     if(!filter.empty() )
     {
-        LLInventoryModel::item_array_t landmark_items = LLLandmarkActions::fetchLandmarksByName(filter, TRUE);
+        LLInventoryModel::item_array_t landmark_items = LLLandmarkActions::fetchLandmarksByName(filter, true);
 
         for(U32 i=0; i < landmark_items.size(); i++)
         {
@@ -1026,7 +1026,7 @@ void LLLocationInputCtrl::rebuildLocationHistory(const std::string& filter)
 
 void LLLocationInputCtrl::focusTextEntry()
 {
-    // We can't use "mTextEntry->setFocus(TRUE)" instead because
+    // We can't use "mTextEntry->setFocus(true)" instead because
     // if the "select_on_focus" parameter is true it places the cursor
     // at the beginning (after selecting text), thus screwing up updateSelection().
     if (mTextEntry)
@@ -1114,7 +1114,7 @@ void LLLocationInputCtrl::changeLocationPresentation()
         mTextEntry->setText(LLURI::unescape(slurl.getSLURLString()));
         mTextEntry->selectAll();
 
-        mMaturityButton->setVisible(FALSE);
+        mMaturityButton->setVisible(false);
 
         isHumanReadableLocationVisible = false;
     }
diff --git a/indra/newview/lllocationinputctrl.h b/indra/newview/lllocationinputctrl.h
index 5ab42044cc..56e5555ba5 100644
--- a/indra/newview/lllocationinputctrl.h
+++ b/indra/newview/lllocationinputctrl.h
@@ -88,17 +88,17 @@ public:
     };
 
     // LLView interface
-    /*virtual*/ void        setEnabled(BOOL enabled);
-    /*virtual*/ BOOL        handleToolTip(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL        handleKeyHere(KEY key, MASK mask);
+    /*virtual*/ void        setEnabled(bool enabled);
+    /*virtual*/ bool        handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool        handleKeyHere(KEY key, MASK mask);
     /*virtual*/ void        onFocusReceived();
     /*virtual*/ void        onFocusLost();
     /*virtual*/ void        draw();
-    /*virtual*/ void        reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void        reshape(S32 width, S32 height, bool called_from_parent = true);
     //========================================================================
 
     // LLUICtrl interface
-    /*virtual*/ void        setFocus(BOOL b);
+    /*virtual*/ void        setFocus(bool b);
     //========================================================================
 
     // LLComboBox interface
diff --git a/indra/newview/lllogchat.cpp b/indra/newview/lllogchat.cpp
index 4b650aeebe..329fb881e3 100644
--- a/indra/newview/lllogchat.cpp
+++ b/indra/newview/lllogchat.cpp
@@ -452,16 +452,16 @@ void LLLogChat::loadChatHistory(const std::string& file_name, std::list<LLSD>& m
         return;
     }
 
-    S32 save_num_messages = messages.size();
+    auto save_num_messages = messages.size();
 
     char buffer[LOG_RECALL_SIZE];       /*Flawfinder: ignore*/
     char *bptr;
-    S32 len;
-    bool firstline = TRUE;
+    size_t len;
+    bool firstline = true;
 
     if (load_all_history || fseek(fptr, (LOG_RECALL_SIZE - 1) * -1  , SEEK_END))
     {   //We need to load the whole historyFile or it's smaller than recall size, so get it all.
-        firstline = FALSE;
+        firstline = false;
         if (fseek(fptr, 0, SEEK_SET))
         {
             fclose(fptr);
@@ -476,7 +476,7 @@ void LLLogChat::loadChatHistory(const std::string& file_name, std::list<LLSD>& m
 
         if (firstline)
         {
-            firstline = FALSE;
+            firstline = false;
             continue;
         }
 
@@ -1142,7 +1142,7 @@ void LLLoadHistoryThread::run()
     if(mNewLoad)
     {
         loadHistory(mFileName, mMessages, mLoadParams);
-        int count = mMessages->size();
+        auto count = mMessages->size();
         LL_INFOS() << "mMessages->size(): " << count << LL_ENDL;
         setFinished();
     }
@@ -1189,12 +1189,12 @@ void LLLoadHistoryThread::loadHistory(const std::string& file_name, std::list<LL
     char buffer[LOG_RECALL_SIZE];       /*Flawfinder: ignore*/
 
     char *bptr;
-    S32 len;
-    bool firstline = TRUE;
+    size_t len;
+    bool firstline = true;
 
     if (load_all_history || fseek(fptr, (LOG_RECALL_SIZE - 1) * -1  , SEEK_END))
     {   //We need to load the whole historyFile or it's smaller than recall size, so get it all.
-        firstline = FALSE;
+        firstline = false;
         if (fseek(fptr, 0, SEEK_SET))
         {
             fclose(fptr);
@@ -1214,7 +1214,7 @@ void LLLoadHistoryThread::loadHistory(const std::string& file_name, std::list<LL
 
         if (firstline)
         {
-            firstline = FALSE;
+            firstline = false;
             continue;
         }
         std::string line(remove_utf8_bom(buffer));
diff --git a/indra/newview/lllogininstance.cpp b/indra/newview/lllogininstance.cpp
index cf1aebf26b..a471daf24e 100644
--- a/indra/newview/lllogininstance.cpp
+++ b/indra/newview/lllogininstance.cpp
@@ -198,7 +198,7 @@ void LLLoginInstance::constructAuthParams(LLPointer<LLCredential> user_credentia
     requested_options.append("global-textures");
     if(gSavedSettings.getBOOL("ConnectAsGod"))
     {
-        gSavedSettings.setBOOL("UseDebugMenus", TRUE);
+        gSavedSettings.setBOOL("UseDebugMenus", true);
         requested_options.append("god-connect");
     }
 
@@ -345,7 +345,7 @@ void LLLoginInstance::handleLoginFailure(const LLSD& event)
         data["message"] = message_response;
         data["reply_pump"] = TOS_REPLY_PUMP;
         if (gViewerWindow)
-            gViewerWindow->setShowProgress(FALSE);
+            gViewerWindow->setShowProgress(false);
         LLFloaterReg::showInstance("message_tos", data);
         LLEventPumps::instance().obtain(TOS_REPLY_PUMP)
             .listen(TOS_LISTENER_NAME,
@@ -369,7 +369,7 @@ void LLLoginInstance::handleLoginFailure(const LLSD& event)
         }
 
         if (gViewerWindow)
-            gViewerWindow->setShowProgress(FALSE);
+            gViewerWindow->setShowProgress(false);
 
         LLFloaterReg::showInstance("message_critical", data);
         LLEventPumps::instance().obtain(TOS_REPLY_PUMP)
@@ -408,7 +408,7 @@ void LLLoginInstance::handleLoginFailure(const LLSD& event)
         }
 
         if (gViewerWindow)
-            gViewerWindow->setShowProgress(FALSE);
+            gViewerWindow->setShowProgress(false);
 
         LLSD args;
         args["VERSION"] = login_version;
@@ -447,7 +447,7 @@ void LLLoginInstance::handleLoginFailure(const LLSD& event)
 
         if (gViewerWindow)
         {
-            gViewerWindow->setShowProgress(FALSE);
+            gViewerWindow->setShowProgress(false);
         }
 
         showMFAChallange(LLTrans::getString(response["message_id"]));
@@ -467,7 +467,7 @@ void LLLoginInstance::handleLoginFailure(const LLSD& event)
         LL_WARNS("LLLogin") << "Login failed for an unknown reason: " << LLSDOStreamer<LLSDNotationFormatter>(response) << LL_ENDL;
 
         if (gViewerWindow)
-            gViewerWindow->setShowProgress(FALSE);
+            gViewerWindow->setShowProgress(false);
 
         LLNotificationsUtil::add("LoginFailedUnknown", LLSD::emptyMap(), LLSD::emptyMap(), boost::bind(&LLLoginInstance::handleLoginDisallowed, this, _1, _2));
     }
diff --git a/indra/newview/llmanip.cpp b/indra/newview/llmanip.cpp
index b852ba0e3c..3e39a52813 100644
--- a/indra/newview/llmanip.cpp
+++ b/indra/newview/llmanip.cpp
@@ -99,7 +99,7 @@ void LLManip::rebuild(LLViewerObject* vobj)
 LLManip::LLManip( const std::string& name, LLToolComposite* composite )
     :
     LLTool( name, composite ),
-    mInSnapRegime(FALSE),
+    mInSnapRegime(false),
     mHighlightedPart(LL_NO_PART),
     mManipPart(LL_NO_PART)
 {
@@ -147,7 +147,7 @@ void LLManip::getManipNormal(LLViewerObject* object, EManipPart manip, LLVector3
 }
 
 
-BOOL LLManip::getManipAxis(LLViewerObject* object, EManipPart manip, LLVector3 &axis)
+bool LLManip::getManipAxis(LLViewerObject* object, EManipPart manip, LLVector3 &axis)
 {
     LLVector3 grid_origin;
     LLVector3 grid_scale;
@@ -169,11 +169,11 @@ BOOL LLManip::getManipAxis(LLViewerObject* object, EManipPart manip, LLVector3 &
     }
     else
     {
-        return FALSE;
+        return false;
     }
 
     axis.rotVec( grid_rotation );
-    return TRUE;
+    return true;
 }
 
 F32 LLManip::getSubdivisionLevel(const LLVector3 &reference_point, const LLVector3 &translate_axis, F32 grid_scale, S32 min_pixel_spacing, F32 min_subdivisions, F32 max_subdivisions)
@@ -215,7 +215,7 @@ LLObjectSelectionHandle LLManip::getSelection()
     return mObjectSelection;
 }
 
-BOOL LLManip::handleHover(S32 x, S32 y, MASK mask)
+bool LLManip::handleHover(S32 x, S32 y, MASK mask)
 {
     // We only handle the event if mousedown started with us
     if( hasMouseCapture() )
@@ -224,7 +224,7 @@ BOOL LLManip::handleHover(S32 x, S32 y, MASK mask)
         {
             // Somehow the object got deselected while we were dragging it.
             // Release the mouse
-            setMouseCapture( FALSE );
+            setMouseCapture( false );
         }
 
         LL_DEBUGS("UserInput") << "hover handled by LLManip (active)" << LL_ENDL;
@@ -234,17 +234,17 @@ BOOL LLManip::handleHover(S32 x, S32 y, MASK mask)
         LL_DEBUGS("UserInput") << "hover handled by LLManip (inactive)" << LL_ENDL;
     }
     gViewerWindow->setCursor(UI_CURSOR_ARROW);
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLManip::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLManip::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
     if( hasMouseCapture() )
     {
-        handled = TRUE;
-        setMouseCapture( FALSE );
+        handled = true;
+        setMouseCapture( false );
     }
     return handled;
 }
@@ -254,20 +254,20 @@ void LLManip::updateGridSettings()
     sGridMaxSubdivisionLevel = gSavedSettings.getBOOL("GridSubUnit") ? (F32)gSavedSettings.getS32("GridSubdivision") : 1.f;
 }
 
-BOOL LLManip::getMousePointOnPlaneAgent(LLVector3& point, S32 x, S32 y, LLVector3 origin, LLVector3 normal)
+bool LLManip::getMousePointOnPlaneAgent(LLVector3& point, S32 x, S32 y, LLVector3 origin, LLVector3 normal)
 {
     LLVector3d origin_double = gAgent.getPosGlobalFromAgent(origin);
     LLVector3d global_point;
-    BOOL result = getMousePointOnPlaneGlobal(global_point, x, y, origin_double, normal);
+    bool result = getMousePointOnPlaneGlobal(global_point, x, y, origin_double, normal);
     point = gAgent.getPosAgentFromGlobal(global_point);
     return result;
 }
 
-BOOL LLManip::getMousePointOnPlaneGlobal(LLVector3d& point, S32 x, S32 y, LLVector3d origin, LLVector3 normal) const
+bool LLManip::getMousePointOnPlaneGlobal(LLVector3d& point, S32 x, S32 y, LLVector3d origin, LLVector3 normal) const
 {
     if (mObjectSelection->getSelectType() == SELECT_TYPE_HUD)
     {
-        BOOL result = FALSE;
+        bool result = false;
         F32 mouse_x = ((F32)x / gViewerWindow->getWorldViewWidthScaled() - 0.5f) * LLViewerCamera::getInstance()->getAspect() / gAgentCamera.mHUDCurZoom;
         F32 mouse_y = ((F32)y / gViewerWindow->getWorldViewHeightScaled() - 0.5f) / gAgentCamera.mHUDCurZoom;
 
@@ -282,7 +282,7 @@ BOOL LLManip::getMousePointOnPlaneGlobal(LLVector3d& point, S32 x, S32 y, LLVect
         {
             mouse_pos.mV[VX] = (normal * (origin_agent - mouse_pos))
                                 / (normal.mV[VX]);
-            result = TRUE;
+            result = true;
         }
 
         point = gAgent.getPosGlobalFromAgent(mouse_pos);
@@ -294,13 +294,13 @@ BOOL LLManip::getMousePointOnPlaneGlobal(LLVector3d& point, S32 x, S32 y, LLVect
                                         point, x, y, origin, normal );
     }
 
-    //return FALSE;
+    //return false;
 }
 
 // Given the line defined by mouse cursor (a1 + a_param*(a2-a1)) and the line defined by b1 + b_param*(b2-b1),
 // returns a_param and b_param for the points where lines are closest to each other.
 // Returns false if the two lines are parallel.
-BOOL LLManip::nearestPointOnLineFromMouse( S32 x, S32 y, const LLVector3& b1, const LLVector3& b2, F32 &a_param, F32 &b_param )
+bool LLManip::nearestPointOnLineFromMouse( S32 x, S32 y, const LLVector3& b1, const LLVector3& b2, F32 &a_param, F32 &b_param )
 {
     LLVector3 a1;
     LLVector3 a2;
@@ -318,7 +318,7 @@ BOOL LLManip::nearestPointOnLineFromMouse( S32 x, S32 y, const LLVector3& b1, co
         a2 = gAgentCamera.getCameraPositionAgent() + LLVector3(gViewerWindow->mouseDirectionGlobal(x, y));
     }
 
-    BOOL parallel = TRUE;
+    bool parallel = true;
     LLVector3 a = a2 - a1;
     LLVector3 b = b2 - b1;
 
@@ -332,7 +332,7 @@ BOOL LLManip::nearestPointOnLineFromMouse( S32 x, S32 y, const LLVector3& b1, co
     if( (denom < -F_APPROXIMATELY_ZERO) || (F_APPROXIMATELY_ZERO < denom) )
     {
         a_param = (dist - normal * a1) / denom;
-        parallel = FALSE;
+        parallel = false;
     }
 
     normal = (a % b) % a;   // normal to plane (P) through a and (shortest line between a and b)
@@ -342,7 +342,7 @@ BOOL LLManip::nearestPointOnLineFromMouse( S32 x, S32 y, const LLVector3& b1, co
     if( (denom < -F_APPROXIMATELY_ZERO) || (F_APPROXIMATELY_ZERO < denom) )
     {
         b_param = (dist - normal * b1) / denom;
-        parallel = FALSE;
+        parallel = false;
     }
 
     return parallel;
@@ -369,14 +369,14 @@ LLVector3 LLManip::getPivotPoint()
 }
 
 
-void LLManip::renderGuidelines(BOOL draw_x, BOOL draw_y, BOOL draw_z)
+void LLManip::renderGuidelines(bool draw_x, bool draw_y, bool draw_z)
 {
     LLVector3 grid_origin;
     LLQuaternion grid_rot;
     LLVector3 grid_scale;
     LLSelectMgr::getInstance()->getGrid(grid_origin, grid_rot, grid_scale);
 
-    const BOOL children_ok = TRUE;
+    const bool children_ok = true;
     LLViewerObject* object = mObjectSelection->getFirstRootObject(children_ok);
     if (!object)
     {
@@ -502,7 +502,7 @@ void LLManip::renderTickText(const LLVector3& pos, const std::string& text, cons
 {
     const LLFontGL* big_fontp = LLFontGL::getFontSansSerif();
 
-    BOOL hud_selection = mObjectSelection->getSelectType() == SELECT_TYPE_HUD;
+    bool hud_selection = mObjectSelection->getSelectType() == SELECT_TYPE_HUD;
     gGL.matrixMode(LLRender::MM_MODELVIEW);
     gGL.pushMatrix();
     LLVector3 render_pos = pos;
@@ -560,7 +560,7 @@ void LLManip::renderTickValue(const LLVector3& pos, F32 value, const std::string
         }
     }
 
-    BOOL hud_selection = mObjectSelection->getSelectType() == SELECT_TYPE_HUD;
+    bool hud_selection = mObjectSelection->getSelectType() == SELECT_TYPE_HUD;
     gGL.matrixMode(LLRender::MM_MODELVIEW);
     gGL.pushMatrix();
     {
diff --git a/indra/newview/llmanip.h b/indra/newview/llmanip.h
index 82f85395ea..6208eca967 100644
--- a/indra/newview/llmanip.h
+++ b/indra/newview/llmanip.h
@@ -1,4 +1,4 @@
-/**
+/**
  * @file llmanip.h
  * @brief LLManip class definition
  *
@@ -117,16 +117,16 @@ public:
 
     LLManip( const std::string& name, LLToolComposite* composite );
 
-    virtual BOOL        handleMouseDownOnPart(S32 x, S32 y, MASK mask) = 0;
-    void                renderGuidelines(BOOL draw_x = TRUE, BOOL draw_y = TRUE, BOOL draw_z = TRUE);
+    virtual bool        handleMouseDownOnPart(S32 x, S32 y, MASK mask) = 0;
+    void                renderGuidelines(bool draw_x = true, bool draw_y = true, bool draw_z = true);
     static void         renderXYZ(const LLVector3 &vec);
 
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask);
     virtual void        highlightManipulators(S32 x, S32 y) = 0;
     virtual void        handleSelect();
     virtual void        handleDeselect();
-    virtual BOOL        canAffectSelection() = 0;
+    virtual bool        canAffectSelection() = 0;
 
     EManipPart          getHighlightedPart() { return mHighlightedPart; }
 
@@ -136,18 +136,18 @@ protected:
     LLVector3           getSavedPivotPoint() const;
     LLVector3           getPivotPoint();
     void                getManipNormal(LLViewerObject* object, EManipPart manip, LLVector3 &normal);
-    BOOL                getManipAxis(LLViewerObject* object, EManipPart manip, LLVector3 &axis);
+    bool                getManipAxis(LLViewerObject* object, EManipPart manip, LLVector3 &axis);
     F32                 getSubdivisionLevel(const LLVector3 &reference_point, const LLVector3 &translate_axis, F32 grid_scale, S32 min_pixel_spacing = MIN_DIVISION_PIXEL_WIDTH, F32 min_subdivisions = sGridMinSubdivisionLevel, F32 max_subdivisions = sGridMaxSubdivisionLevel);
     void                renderTickValue(const LLVector3& pos, F32 value, const std::string& suffix, const LLColor4 &color);
     void                renderTickText(const LLVector3& pos, const std::string& suffix, const LLColor4 &color);
     void                updateGridSettings();
-    BOOL                getMousePointOnPlaneGlobal(LLVector3d& point, S32 x, S32 y, LLVector3d origin, LLVector3 normal) const;
-    BOOL                getMousePointOnPlaneAgent(LLVector3& point, S32 x, S32 y, LLVector3 origin, LLVector3 normal);
-    BOOL                nearestPointOnLineFromMouse( S32 x, S32 y, const LLVector3& b1, const LLVector3& b2, F32 &a_param, F32 &b_param );
+    bool                getMousePointOnPlaneGlobal(LLVector3d& point, S32 x, S32 y, LLVector3d origin, LLVector3 normal) const;
+    bool                getMousePointOnPlaneAgent(LLVector3& point, S32 x, S32 y, LLVector3 origin, LLVector3 normal);
+    bool                nearestPointOnLineFromMouse( S32 x, S32 y, const LLVector3& b1, const LLVector3& b2, F32 &a_param, F32 &b_param );
     LLColor4            setupSnapGuideRenderPass(S32 pass);
 protected:
     LLFrameTimer        mHelpTextTimer;
-    BOOL                mInSnapRegime;
+    bool                mInSnapRegime;
     LLSafeHandle<LLObjectSelection> mObjectSelection;
     EManipPart          mHighlightedPart;
     EManipPart          mManipPart;
diff --git a/indra/newview/llmaniprotate.cpp b/indra/newview/llmaniprotate.cpp
index 7e8b5db942..b63b8be095 100644
--- a/indra/newview/llmaniprotate.cpp
+++ b/indra/newview/llmaniprotate.cpp
@@ -95,9 +95,9 @@ LLManipRotate::LLManipRotate( LLToolComposite* composite )
     mCenterToCamMag(0.f),
     mCenterToProfilePlane(),
     mCenterToProfilePlaneMag(0.f),
-    mSendUpdateOnMouseUp( FALSE ),
-    mSmoothRotate( FALSE ),
-    mCamEdgeOn(FALSE),
+    mSendUpdateOnMouseUp( false ),
+    mSmoothRotate( false ),
+    mCamEdgeOn(false),
     mManipulatorScales(1.f, 1.f, 1.f, 1.f)
 { }
 
@@ -120,7 +120,7 @@ void LLManipRotate::render()
     LLGLEnable gl_blend(GL_BLEND);
 
     // You can rotate if you can move
-    LLViewerObject* first_object = mObjectSelection->getFirstMoveableObject(TRUE);
+    LLViewerObject* first_object = mObjectSelection->getFirstMoveableObject(true);
     if( !first_object )
     {
         return;
@@ -202,7 +202,7 @@ void LLManipRotate::render()
                 {
                     gGL.color4f( 0.7f, 0.7f, 0.7f, 0.3f );
                     gGL.diffuseColor4f(0.7f, 0.7f, 0.7f, 0.3f);
-                    gl_circle_2d( 0, 0,  mRadiusMeters, CIRCLE_STEPS, TRUE );
+                    gl_circle_2d( 0, 0,  mRadiusMeters, CIRCLE_STEPS, true );
                 }
 
                 gGL.flush();
@@ -364,11 +364,11 @@ void LLManipRotate::render()
     renderXYZ(euler_angles);
 }
 
-BOOL LLManipRotate::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLManipRotate::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
-    LLViewerObject* first_object = mObjectSelection->getFirstMoveableObject(TRUE);
+    LLViewerObject* first_object = mObjectSelection->getFirstMoveableObject(true);
     if( first_object )
     {
         if( mHighlightedPart != LL_NO_PART )
@@ -381,12 +381,12 @@ BOOL LLManipRotate::handleMouseDown(S32 x, S32 y, MASK mask)
 }
 
 // Assumes that one of the parts of the manipulator was hit.
-BOOL LLManipRotate::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
+bool LLManipRotate::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
 {
-    BOOL can_rotate = canAffectSelection();
+    bool can_rotate = canAffectSelection();
     if (!can_rotate)
     {
-        return FALSE;
+        return false;
     }
 
     highlightManipulators(x, y);
@@ -441,12 +441,12 @@ BOOL LLManipRotate::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
     mAgentSelfAtAxis = gAgent.getAtAxis(); // no point checking if avatar was selected, just save the value
 
     // Route future Mouse messages here preemptively.  (Release on mouse up.)
-    setMouseCapture( TRUE );
-    LLSelectMgr::getInstance()->enableSilhouette(FALSE);
+    setMouseCapture( true );
+    LLSelectMgr::getInstance()->enableSilhouette(false);
 
     mHelpTextTimer.reset();
     sNumTimesHelpTextShown++;
-    return TRUE;
+    return true;
 }
 
 
@@ -461,7 +461,7 @@ LLVector3 LLManipRotate::findNearestPointOnRing( S32 x, S32 y, const LLVector3&
     return center + proj_onto_ring * mRadiusMeters;
 }
 
-BOOL LLManipRotate::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLManipRotate::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     // first, perform normal processing in case this was a quick-click
     handleHover(x, y, mask);
@@ -488,7 +488,7 @@ BOOL LLManipRotate::handleMouseUp(S32 x, S32 y, MASK mask)
 
         // Might have missed last update due to timing.
         LLSelectMgr::getInstance()->sendMultipleUpdate( UPD_ROTATION | UPD_POSITION );
-        LLSelectMgr::getInstance()->enableSilhouette(TRUE);
+        LLSelectMgr::getInstance()->enableSilhouette(true);
         //gAgent.setObjectTracking(gSavedSettings.getBOOL("TrackFocusObject"));
 
         LLSelectMgr::getInstance()->updateSelectionCenter();
@@ -499,14 +499,14 @@ BOOL LLManipRotate::handleMouseUp(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLManipRotate::handleHover(S32 x, S32 y, MASK mask)
+bool LLManipRotate::handleHover(S32 x, S32 y, MASK mask)
 {
     if( hasMouseCapture() )
     {
         if( mObjectSelection->isEmpty() )
         {
             // Somehow the object got deselected while we were dragging it.
-            setMouseCapture( FALSE );
+            setMouseCapture( false );
         }
         else
         {
@@ -522,11 +522,11 @@ BOOL LLManipRotate::handleHover(S32 x, S32 y, MASK mask)
     }
 
     gViewerWindow->setCursor(UI_CURSOR_TOOLROTATE);
-    return TRUE;
+    return true;
 }
 
 
-LLVector3 LLManipRotate::projectToSphere( F32 x, F32 y, BOOL* on_sphere )
+LLVector3 LLManipRotate::projectToSphere( F32 x, F32 y, bool* on_sphere )
 {
     F32 z = 0.f;
     F32 dist_squared = x*x + y*y;
@@ -556,8 +556,8 @@ void LLManipRotate::drag( S32 x, S32 y )
         mRotation = dragConstrained(x, y);
     }
 
-    BOOL damped = mSmoothRotate;
-    mSmoothRotate = FALSE;
+    bool damped = mSmoothRotate;
+    mSmoothRotate = false;
     bool gltf_mode = false;
 
     for (LLObjectSelection::iterator iter = mObjectSelection->begin();
@@ -772,13 +772,13 @@ void LLManipRotate::renderActiveRing( F32 radius, F32 width, const LLColor4& fro
 {
     LLGLEnable cull_face(GL_CULL_FACE);
     {
-        gl_ring(radius, width, back_color, back_color * 0.5f, CIRCLE_STEPS, FALSE);
-        gl_ring(radius, width, back_color, back_color * 0.5f, CIRCLE_STEPS, TRUE);
+        gl_ring(radius, width, back_color, back_color * 0.5f, CIRCLE_STEPS, false);
+        gl_ring(radius, width, back_color, back_color * 0.5f, CIRCLE_STEPS, true);
     }
     {
         LLGLDepthTest gls_depth(GL_FALSE);
-        gl_ring(radius, width, front_color, front_color * 0.5f, CIRCLE_STEPS, FALSE);
-        gl_ring(radius, width, front_color, front_color * 0.5f, CIRCLE_STEPS, TRUE);
+        gl_ring(radius, width, front_color, front_color * 0.5f, CIRCLE_STEPS, false);
+        gl_ring(radius, width, front_color, front_color * 0.5f, CIRCLE_STEPS, true);
     }
 }
 
@@ -813,7 +813,7 @@ void LLManipRotate::renderSnapGuides()
     LLVector3 world_snap_axis;
     LLVector3 test_axis = constraint_axis;
 
-    BOOL constrain_to_ref_object = FALSE;
+    bool constrain_to_ref_object = false;
     if (mObjectSelection->getSelectType() == SELECT_TYPE_ATTACHMENT && isAgentAvatarValid())
     {
         test_axis = test_axis * ~grid_rotation;
@@ -821,7 +821,7 @@ void LLManipRotate::renderSnapGuides()
     else if (LLSelectMgr::getInstance()->getGridMode() == GRID_MODE_REF_OBJECT)
     {
         test_axis = test_axis * ~grid_rotation;
-        constrain_to_ref_object = TRUE;
+        constrain_to_ref_object = true;
     }
 
     test_axis.abs();
@@ -900,17 +900,17 @@ void LLManipRotate::renderSnapGuides()
                 F32 end_angle = atan2(y_axis_snap * edge_normal, x_axis_snap * edge_normal);
                 //F32 start_angle = angle_between((-1.f * LLVector3::x_axis) * snap_guide_rot, edge_normal);
                 F32 start_angle = end_angle - F_PI;
-                gl_arc_2d(0.f, 0.f, mRadiusMeters * SNAP_GUIDE_INNER_RADIUS, CIRCLE_STEPS, FALSE, start_angle, end_angle);
+                gl_arc_2d(0.f, 0.f, mRadiusMeters * SNAP_GUIDE_INNER_RADIUS, CIRCLE_STEPS, false, start_angle, end_angle);
             }
             else
             {
-                gl_circle_2d(0.f, 0.f, mRadiusMeters * SNAP_GUIDE_INNER_RADIUS, CIRCLE_STEPS, FALSE);
+                gl_circle_2d(0.f, 0.f, mRadiusMeters * SNAP_GUIDE_INNER_RADIUS, CIRCLE_STEPS, false);
             }
             gGL.popMatrix();
 
             for (S32 i = 0; i < 64; i++)
             {
-                BOOL render_text = TRUE;
+                bool render_text = true;
                 F32 deg = 5.625f * (F32)i;
                 LLVector3 inner_point;
                 LLVector3 outer_point;
@@ -948,7 +948,7 @@ void LLManipRotate::renderSnapGuides()
                         if (dot > 0.f)
                         {
                             outer_point = inner_point;
-                            render_text = FALSE;
+                            render_text = false;
                         }
                         else
                         {
@@ -1087,7 +1087,7 @@ void LLManipRotate::renderSnapGuides()
                 getObjectAxisClosestToMouse(object_axis);
 
                 // project onto constraint plane
-                LLSelectNode* first_node = mObjectSelection->getFirstMoveableNode(TRUE);
+                LLSelectNode* first_node = mObjectSelection->getFirstMoveableNode(true);
                 object_axis = object_axis * first_node->getObject()->getRenderRotation();
                 object_axis = object_axis - (object_axis * getConstraintAxis()) * getConstraintAxis();
                 object_axis.normVec();
@@ -1179,8 +1179,8 @@ void LLManipRotate::renderSnapGuides()
     }
 }
 
-// Returns TRUE if center of sphere is visible.  Also sets a bunch of member variables that are used later (e.g. mCenterToCam)
-BOOL LLManipRotate::updateVisiblity()
+// Returns true if center of sphere is visible.  Also sets a bunch of member variables that are used later (e.g. mCenterToCam)
+bool LLManipRotate::updateVisiblity()
 {
     // Don't want to recalculate the center of the selection during a drag.
     // Due to packet delays, sometimes half the objects in the selection have their
@@ -1193,7 +1193,7 @@ BOOL LLManipRotate::updateVisiblity()
         mRotationCenter = gAgent.getPosGlobalFromAgent( getPivotPoint() );//LLSelectMgr::getInstance()->getSelectionCenterGlobal();
     }
 
-    BOOL visible = FALSE;
+    bool visible = false;
 
     //Assume that UI scale factor is equivalent for X and Y axis
     F32 ui_scale_factor = LLUI::getScaleFactor().mV[VX];
@@ -1217,7 +1217,7 @@ BOOL LLManipRotate::updateVisiblity()
         // so use getWorldViewHeightRaw as scale factor when converting to pixel coordinates
         mCenterScreen.set((S32)((0.5f - center.mV[VY]) / gAgentCamera.mHUDCurZoom * gViewerWindow->getWorldViewHeightScaled()),
                             (S32)((center.mV[VZ] + 0.5f) / gAgentCamera.mHUDCurZoom * gViewerWindow->getWorldViewHeightScaled()));
-        visible = TRUE;
+        visible = true;
     }
     else
     {
@@ -1238,7 +1238,7 @@ BOOL LLManipRotate::updateVisiblity()
                 F32 max_select_distance = gSavedSettings.getF32("MaxSelectDistance");
                 if (dist_vec_squared(gAgent.getPositionAgent(), center) > (max_select_distance * max_select_distance))
                 {
-                    visible = FALSE;
+                    visible = false;
                 }
             }
 
@@ -1254,16 +1254,16 @@ BOOL LLManipRotate::updateVisiblity()
             }
             else
             {
-                visible = FALSE;
+                visible = false;
             }
         }
     }
 
-    mCamEdgeOn = FALSE;
+    mCamEdgeOn = false;
     F32 axis_onto_cam = mManipPart >= LL_ROT_X ? llabs( getConstraintAxis() * mCenterToCamNorm ) : 0.f;
     if( axis_onto_cam < AXIS_ONTO_CAM_TOLERANCE )
     {
-        mCamEdgeOn = TRUE;
+        mCamEdgeOn = true;
     }
 
     return visible;
@@ -1356,7 +1356,7 @@ LLVector3 LLManipRotate::getConstraintAxis()
 
         LLSelectMgr::getInstance()->getGrid(grid_origin, grid_rotation, grid_scale);
 
-        LLSelectNode* first_node = mObjectSelection->getFirstMoveableNode(TRUE);
+        LLSelectNode* first_node = mObjectSelection->getFirstMoveableNode(true);
         if (first_node)
         {
             // *FIX: get agent local attachment grid working
@@ -1370,7 +1370,7 @@ LLVector3 LLManipRotate::getConstraintAxis()
 
 LLQuaternion LLManipRotate::dragConstrained( S32 x, S32 y )
 {
-    LLSelectNode* first_object_node = mObjectSelection->getFirstMoveableNode(TRUE);
+    LLSelectNode* first_object_node = mObjectSelection->getFirstMoveableNode(true);
     LLVector3 constraint_axis = getConstraintAxis();
     LLVector3 center = gAgent.getPosAgentFromGlobal( mRotationCenter );
 
@@ -1444,7 +1444,7 @@ LLQuaternion LLManipRotate::dragConstrained( S32 x, S32 y )
         }
 
         LLVector3 projected_mouse;
-        BOOL hit = getMousePointOnPlaneAgent(projected_mouse, x, y, snap_plane_center, constraint_axis);
+        bool hit = getMousePointOnPlaneAgent(projected_mouse, x, y, snap_plane_center, constraint_axis);
         projected_mouse -= snap_plane_center;
 
         if (gSavedSettings.getBOOL("SnapEnabled")) {
@@ -1559,9 +1559,9 @@ LLQuaternion LLManipRotate::dragConstrained( S32 x, S32 y )
 
                 if (!mInSnapRegime)
                 {
-                    mSmoothRotate = TRUE;
+                    mSmoothRotate = true;
                 }
-                mInSnapRegime = TRUE;
+                mInSnapRegime = true;
                 // 0 to 360 deg
                 F32 mouse_angle = fmodf(atan2(projected_mouse * axis1, projected_mouse * axis2) * RAD_TO_DEG + 360.f, 360.f);
 
@@ -1593,17 +1593,17 @@ LLQuaternion LLManipRotate::dragConstrained( S32 x, S32 y )
             {
                 if (mInSnapRegime)
                 {
-                    mSmoothRotate = TRUE;
+                    mSmoothRotate = true;
                 }
-                mInSnapRegime = FALSE;
+                mInSnapRegime = false;
             }
         }
         else {
             if (mInSnapRegime)
             {
-                mSmoothRotate = TRUE;
+                mSmoothRotate = true;
             }
-            mInSnapRegime = FALSE;
+            mInSnapRegime = false;
         }
 
         if (!mInSnapRegime)
@@ -1645,9 +1645,9 @@ LLQuaternion LLManipRotate::dragConstrained( S32 x, S32 y )
         {
             if (!mInSnapRegime)
             {
-                mSmoothRotate = TRUE;
+                mSmoothRotate = true;
             }
-            mInSnapRegime = TRUE;
+            mInSnapRegime = true;
             // 0 to 360 deg
             F32 mouse_angle = fmodf(atan2(projected_mouse * axis1, projected_mouse * axis2) * RAD_TO_DEG + 360.f, 360.f);
 
@@ -1676,9 +1676,9 @@ LLQuaternion LLManipRotate::dragConstrained( S32 x, S32 y )
         {
             if (mInSnapRegime)
             {
-                mSmoothRotate = TRUE;
+                mSmoothRotate = true;
             }
-            mInSnapRegime = FALSE;
+            mInSnapRegime = false;
         }
 
         LLVector3 cross_product = mMouseDown % mMouseCur;
@@ -1765,7 +1765,7 @@ void LLManipRotate::highlightManipulators( S32 x, S32 y )
     mHighlightedPart = LL_NO_PART;
 
     //LLBBox bbox = LLSelectMgr::getInstance()->getBBoxOfSelection();
-    LLViewerObject *first_object = mObjectSelection->getFirstMoveableObject(TRUE);
+    LLViewerObject *first_object = mObjectSelection->getFirstMoveableObject(true);
 
     if (!first_object)
     {
@@ -1900,7 +1900,7 @@ void LLManipRotate::highlightManipulators( S32 x, S32 y )
 
 S32 LLManipRotate::getObjectAxisClosestToMouse(LLVector3& object_axis)
 {
-    LLSelectNode* first_object_node = mObjectSelection->getFirstMoveableNode(TRUE);
+    LLSelectNode* first_object_node = mObjectSelection->getFirstMoveableNode(true);
 
     if (!first_object_node)
     {
@@ -1955,9 +1955,9 @@ S32 LLManipRotate::getObjectAxisClosestToMouse(LLVector3& object_axis)
 }
 
 //virtual
-BOOL LLManipRotate::canAffectSelection()
+bool LLManipRotate::canAffectSelection()
 {
-    BOOL can_rotate = mObjectSelection->getObjectCount() != 0;
+    bool can_rotate = mObjectSelection->getObjectCount() != 0;
     if (can_rotate)
     {
         struct f : public LLSelectedObjectFunctor
diff --git a/indra/newview/llmaniprotate.h b/indra/newview/llmaniprotate.h
index 92a8d7fece..fa764a9ced 100644
--- a/indra/newview/llmaniprotate.h
+++ b/indra/newview/llmaniprotate.h
@@ -53,27 +53,27 @@ public:
 
     LLManipRotate( LLToolComposite* composite );
 
-    virtual BOOL    handleMouseDown( S32 x, S32 y, MASK mask );
-    virtual BOOL    handleMouseUp( S32 x, S32 y, MASK mask );
-    virtual BOOL    handleHover( S32 x, S32 y, MASK mask );
+    virtual bool    handleMouseDown( S32 x, S32 y, MASK mask );
+    virtual bool    handleMouseUp( S32 x, S32 y, MASK mask );
+    virtual bool    handleHover( S32 x, S32 y, MASK mask );
     virtual void    render();
 
     virtual void    handleSelect();
 
-    virtual BOOL    handleMouseDownOnPart(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDownOnPart(S32 x, S32 y, MASK mask);
     virtual void    highlightManipulators(S32 x, S32 y);
-    virtual BOOL    canAffectSelection();
+    virtual bool    canAffectSelection();
 
 private:
     void            updateHoverView();
 
     void            drag( S32 x, S32 y );
-    LLVector3       projectToSphere( F32 x, F32 y, BOOL* on_sphere );
+    LLVector3       projectToSphere( F32 x, F32 y, bool* on_sphere );
 
     void            renderSnapGuides();
     void            renderActiveRing(F32 radius, F32 width, const LLColor4& center_color, const LLColor4& side_color);
 
-    BOOL            updateVisiblity();
+    bool            updateVisiblity();
     LLVector3       findNearestPointOnRing( S32 x, S32 y, const LLVector3& center, const LLVector3& axis );
 
     LLQuaternion    dragUnconstrained( S32 x, S32 y );
@@ -104,10 +104,10 @@ private:
     LLVector3           mCenterToProfilePlane;
     F32                 mCenterToProfilePlaneMag;
 
-    BOOL                mSendUpdateOnMouseUp;
+    bool                mSendUpdateOnMouseUp;
 
-    BOOL                mSmoothRotate;
-    BOOL                mCamEdgeOn;
+    bool                mSmoothRotate;
+    bool                mCamEdgeOn;
 
     LLVector4           mManipulatorVertices[6];
     LLVector4           mManipulatorScales;
diff --git a/indra/newview/llmanipscale.cpp b/indra/newview/llmanipscale.cpp
index 3bace98b15..c4f3f01ea1 100644
--- a/indra/newview/llmanipscale.cpp
+++ b/indra/newview/llmanipscale.cpp
@@ -101,37 +101,37 @@ F32 get_default_max_prim_scale(bool is_flora)
 }
 
 // static
-void LLManipScale::setUniform(BOOL b)
+void LLManipScale::setUniform(bool b)
 {
     gSavedSettings.setBOOL("ScaleUniform", b);
 }
 
 // static
-void LLManipScale::setShowAxes(BOOL b)
+void LLManipScale::setShowAxes(bool b)
 {
     gSavedSettings.setBOOL("ScaleShowAxes", b);
 }
 
 // static
-void LLManipScale::setStretchTextures(BOOL b)
+void LLManipScale::setStretchTextures(bool b)
 {
     gSavedSettings.setBOOL("ScaleStretchTextures", b);
 }
 
 // static
-BOOL LLManipScale::getUniform()
+bool LLManipScale::getUniform()
 {
     return gSavedSettings.getBOOL("ScaleUniform");
 }
 
 // static
-BOOL LLManipScale::getShowAxes()
+bool LLManipScale::getShowAxes()
 {
     return gSavedSettings.getBOOL("ScaleShowAxes");
 }
 
 // static
-BOOL LLManipScale::getStretchTextures()
+bool LLManipScale::getStretchTextures()
 {
     return gSavedSettings.getBOOL("ScaleStretchTextures");
 }
@@ -183,7 +183,7 @@ LLManipScale::LLManipScale( LLToolComposite* composite )
     mScaledBoxHandleSize( 1.f ),
     mLastMouseX( -1 ),
     mLastMouseY( -1 ),
-    mSendUpdateOnMouseUp( FALSE ),
+    mSendUpdateOnMouseUp( false ),
     mLastUpdateFlags( 0 ),
     mScaleSnapUnit1(1.f),
     mScaleSnapUnit2(1.f),
@@ -319,9 +319,9 @@ void LLManipScale::render()
     }
 }
 
-BOOL LLManipScale::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLManipScale::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     if(mHighlightedPart != LL_NO_PART)
     {
@@ -332,18 +332,18 @@ BOOL LLManipScale::handleMouseDown(S32 x, S32 y, MASK mask)
 }
 
 // Assumes that one of the arrows on an object was hit.
-BOOL LLManipScale::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
+bool LLManipScale::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
 {
-    BOOL can_scale = canAffectSelection();
+    bool can_scale = canAffectSelection();
     if (!can_scale)
     {
-        return FALSE;
+        return false;
     }
 
     highlightManipulators(x, y);
     S32 hit_part = mHighlightedPart;
 
-    LLSelectMgr::getInstance()->enableSilhouette(FALSE);
+    LLSelectMgr::getInstance()->enableSilhouette(false);
     mManipPart = (EManipPart)hit_part;
 
     LLBBox bbox = LLSelectMgr::getInstance()->getBBoxOfSelection();
@@ -365,15 +365,15 @@ BOOL LLManipScale::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
     // we just started a drag, so save initial object positions, orientations, and scales
     LLSelectMgr::getInstance()->saveSelectedObjectTransform(SELECT_ACTION_TYPE_SCALE);
     // Route future Mouse messages here preemptively.  (Release on mouse up.)
-    setMouseCapture( TRUE );
+    setMouseCapture( true );
 
     mHelpTextTimer.reset();
     sNumTimesHelpTextShown++;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLManipScale::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLManipScale::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     // first, perform normal processing in case this was a quick-click
     handleHover(x, y, mask);
@@ -383,19 +383,19 @@ BOOL LLManipScale::handleMouseUp(S32 x, S32 y, MASK mask)
         if( (LL_FACE_MIN <= (S32)mManipPart)
             && ((S32)mManipPart <= LL_FACE_MAX) )
         {
-            sendUpdates(TRUE,TRUE,FALSE);
+            sendUpdates(true,true,false);
         }
         else
         if( (LL_CORNER_MIN <= (S32)mManipPart)
             && ((S32)mManipPart <= LL_CORNER_MAX) )
         {
-            sendUpdates(TRUE,TRUE,TRUE);
+            sendUpdates(true,true,true);
         }
 
         //send texture update
-        LLSelectMgr::getInstance()->adjustTexturesByScale(TRUE, getStretchTextures());
+        LLSelectMgr::getInstance()->adjustTexturesByScale(true, getStretchTextures());
 
-        LLSelectMgr::getInstance()->enableSilhouette(TRUE);
+        LLSelectMgr::getInstance()->enableSilhouette(true);
         mManipPart = LL_NO_PART;
 
         // Might have missed last update due to UPDATE_DELAY timing
@@ -408,14 +408,14 @@ BOOL LLManipScale::handleMouseUp(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLManipScale::handleHover(S32 x, S32 y, MASK mask)
+bool LLManipScale::handleHover(S32 x, S32 y, MASK mask)
 {
     if( hasMouseCapture() )
     {
         if( mObjectSelection->isEmpty() )
         {
             // Somehow the object got deselected while we were dragging it.
-            setMouseCapture( FALSE );
+            setMouseCapture( false );
         }
         else
         {
@@ -439,10 +439,10 @@ BOOL LLManipScale::handleHover(S32 x, S32 y, MASK mask)
     }
 
     // Patch up textures, if possible.
-    LLSelectMgr::getInstance()->adjustTexturesByScale(FALSE, getStretchTextures());
+    LLSelectMgr::getInstance()->adjustTexturesByScale(false, getStretchTextures());
 
     gViewerWindow->setCursor(UI_CURSOR_TOOLSCALE);
-    return TRUE;
+    return true;
 }
 
 void LLManipScale::highlightManipulators(S32 x, S32 y)
@@ -865,7 +865,7 @@ void LLManipScale::dragCorner( S32 x, S32 y )
     F32 scale_factor = 1.f;
     F32 max_scale    = partToMaxScale(mManipPart, bbox);
     F32 min_scale    = partToMinScale(mManipPart, bbox);
-    BOOL uniform     = LLManipScale::getUniform();
+    bool uniform     = LLManipScale::getUniform();
 
     // check for snapping
     LLVector3 mouse_on_plane1;
@@ -879,7 +879,7 @@ void LLManipScale::dragCorner( S32 x, S32 y )
     LLVector3 projected_drag_pos1 = inverse_projected_vec(mScaleDir, orthogonal_component(mouse_on_plane1, mSnapGuideDir1));
     LLVector3 projected_drag_pos2 = inverse_projected_vec(mScaleDir, orthogonal_component(mouse_on_plane2, mSnapGuideDir2));
 
-    BOOL snap_enabled = gSavedSettings.getBOOL("SnapEnabled");
+    bool snap_enabled = gSavedSettings.getBOOL("SnapEnabled");
     if (snap_enabled && (mouse_on_plane1 - projected_drag_pos1) * mSnapGuideDir1 > mSnapRegimeOffset)
     {
         F32 drag_dist = mScaleDir * projected_drag_pos1; // Projecting the drag position allows for negative results, vs using the length which will result in a "reverse scaling" bug.
@@ -955,7 +955,7 @@ void LLManipScale::dragCorner( S32 x, S32 y )
 
     LLVector3d drag_global = uniform ? mDragStartCenterGlobal : mDragFarHitGlobal;
 
-    // do the root objects i.e. (TRUE == cur->isRootEdit())
+    // do the root objects i.e. (true == cur->isRootEdit())
     for (LLObjectSelection::iterator iter = mObjectSelection->begin();
          iter != mObjectSelection->end(); iter++)
     {
@@ -1006,7 +1006,7 @@ void LLManipScale::dragCorner( S32 x, S32 y )
             }
         }
     }
-    // do the child objects i.e. (FALSE == cur->isRootEdit())
+    // do the child objects i.e. (false == cur->isRootEdit())
     for (LLObjectSelection::iterator iter = mObjectSelection->begin();
          iter != mObjectSelection->end(); iter++)
     {
@@ -1018,7 +1018,7 @@ void LLManipScale::dragCorner( S32 x, S32 y )
             !cur->isAvatar() && !cur->isRootEdit() )
         {
             const LLVector3& scale = selectNode->mSavedScale;
-            cur->setScale( scale_factor * scale, FALSE );
+            cur->setScale( scale_factor * scale, false );
 
             if (!selectNode->mIndividualSelection)
             {
@@ -1080,7 +1080,7 @@ void LLManipScale::dragFace( S32 x, S32 y )
     F32 max_drag_dist = partToMaxScale(mManipPart, bbox);
     F32 min_drag_dist = partToMinScale(mManipPart, bbox);
 
-    BOOL uniform = LLManipScale::getUniform();
+    bool uniform = LLManipScale::getUniform();
     if( uniform )
     {
         drag_delta *= 2.f;
@@ -1090,7 +1090,7 @@ void LLManipScale::dragFace( S32 x, S32 y )
     F32 dist_from_scale_line = dist_vec(scale_center_to_mouse, (mouse_on_scale_line - mScaleCenter));
     F32 dist_along_scale_line = scale_center_to_mouse * mScaleDir;
 
-    BOOL snap_enabled = gSavedSettings.getBOOL("SnapEnabled");
+    bool snap_enabled = gSavedSettings.getBOOL("SnapEnabled");
 
     if (snap_enabled && dist_from_scale_line > mSnapRegimeOffset)
     {
@@ -1166,7 +1166,7 @@ void LLManipScale::dragFace( S32 x, S32 y )
     mDragPointGlobal = drag_point_global;
 }
 
-void LLManipScale::sendUpdates( BOOL send_position_update, BOOL send_scale_update, BOOL corner )
+void LLManipScale::sendUpdates( bool send_position_update, bool send_scale_update, bool corner )
 {
     // Throttle updates to 10 per second.
     static LLTimer  update_timer;
@@ -1179,7 +1179,7 @@ void LLManipScale::sendUpdates( BOOL send_position_update, BOOL send_scale_updat
         if (send_position_update)   update_flags |= UPD_POSITION;
         if (send_scale_update)      update_flags |= UPD_SCALE;
 
-//      BOOL send_type = SEND_INDIVIDUALS;
+//      bool send_type = SEND_INDIVIDUALS;
         if (corner)
         {
             update_flags |= UPD_UNIFORM;
@@ -1192,11 +1192,11 @@ void LLManipScale::sendUpdates( BOOL send_position_update, BOOL send_scale_updat
         {
             LLSelectMgr::getInstance()->sendMultipleUpdate( update_flags );
             update_timer.reset();
-            mSendUpdateOnMouseUp = FALSE;
+            mSendUpdateOnMouseUp = false;
         }
         else
         {
-            mSendUpdateOnMouseUp = TRUE;
+            mSendUpdateOnMouseUp = true;
         }
         dialog_refresh_all();
     }
@@ -1245,7 +1245,7 @@ void LLManipScale::stretchFace( const LLVector3& drag_start_agent, const LLVecto
 
             LLVector3 scale         = cur->getScale();
             scale.mV[axis_index]    = desired_scale;
-            cur->setScale(scale, FALSE);
+            cur->setScale(scale, false);
             rebuild(cur);
             LLVector3 delta_pos;
             if( !getUniform() )
@@ -2076,11 +2076,11 @@ LLVector3 LLManipScale::nearestAxis( const LLVector3& v ) const
 }
 
 // virtual
-BOOL LLManipScale::canAffectSelection()
+bool LLManipScale::canAffectSelection()
 {
     // An selection is scalable if you are allowed to both edit and move
     // everything in it, and it does not have any sitting agents
-    BOOL can_scale = mObjectSelection->getObjectCount() != 0;
+    bool can_scale = mObjectSelection->getObjectCount() != 0;
     if (can_scale)
     {
         struct f : public LLSelectedObjectFunctor
diff --git a/indra/newview/llmanipscale.h b/indra/newview/llmanipscale.h
index e8735e673e..8a615cb7e4 100644
--- a/indra/newview/llmanipscale.h
+++ b/indra/newview/llmanipscale.h
@@ -76,22 +76,22 @@ public:
     LLManipScale( LLToolComposite* composite );
     ~LLManipScale();
 
-    virtual BOOL    handleMouseDown( S32 x, S32 y, MASK mask );
-    virtual BOOL    handleMouseUp( S32 x, S32 y, MASK mask );
-    virtual BOOL    handleHover( S32 x, S32 y, MASK mask );
+    virtual bool    handleMouseDown( S32 x, S32 y, MASK mask );
+    virtual bool    handleMouseUp( S32 x, S32 y, MASK mask );
+    virtual bool    handleHover( S32 x, S32 y, MASK mask );
     virtual void    render();
     virtual void    handleSelect();
 
-    virtual BOOL    handleMouseDownOnPart(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDownOnPart(S32 x, S32 y, MASK mask);
     virtual void    highlightManipulators(S32 x, S32 y);    // decided which manipulator, if any, should be highlighted by mouse hover
-    virtual BOOL    canAffectSelection();
+    virtual bool    canAffectSelection();
 
-    static void     setUniform( BOOL b );
-    static BOOL     getUniform();
-    static void     setStretchTextures( BOOL b );
-    static BOOL     getStretchTextures();
-    static void     setShowAxes( BOOL b );
-    static BOOL     getShowAxes();
+    static void     setUniform( bool b );
+    static bool     getUniform();
+    static void     setStretchTextures( bool b );
+    static bool     getStretchTextures();
+    static void     setShowAxes( bool b );
+    static bool     getShowAxes();
 
 private:
     void            renderCorners( const LLBBox& local_bbox );
@@ -109,7 +109,7 @@ private:
     void            dragFace( S32 x, S32 y );
     void            dragCorner( S32 x, S32 y );
 
-    void            sendUpdates( BOOL send_position_update, BOOL send_scale_update, BOOL corner = FALSE);
+    void            sendUpdates( bool send_position_update, bool send_scale_update, bool corner = false);
 
     LLVector3       faceToUnitVector( S32 part ) const;
     LLVector3       cornerToUnitVector( S32 part ) const;
@@ -148,7 +148,7 @@ private:
     LLVector3d      mDragFarHitGlobal;
     S32             mLastMouseX;
     S32             mLastMouseY;
-    BOOL            mSendUpdateOnMouseUp;
+    bool            mSendUpdateOnMouseUp;
     U32             mLastUpdateFlags;
     typedef std::set<ManipulatorHandle*, compare_manipulators> manipulator_list_t;
     manipulator_list_t mProjectedManipulators;
diff --git a/indra/newview/llmaniptranslate.cpp b/indra/newview/llmaniptranslate.cpp
index b3ecb6403b..c11a98be50 100644
--- a/indra/newview/llmaniptranslate.cpp
+++ b/indra/newview/llmaniptranslate.cpp
@@ -1,4 +1,4 @@
-/**
+/**
  * @file llmaniptranslate.cpp
  * @brief LLManipTranslate class implementation
  *
@@ -111,8 +111,8 @@ LLManipTranslate::LLManipTranslate( LLToolComposite* composite )
 :   LLManip( std::string("Move"), composite ),
     mLastHoverMouseX(-1),
     mLastHoverMouseY(-1),
-    mMouseOutsideSlop(FALSE),
-    mCopyMadeThisDrag(FALSE),
+    mMouseOutsideSlop(false),
+    mCopyMadeThisDrag(false),
     mMouseDownX(-1),
     mMouseDownY(-1),
     mAxisArrowLength(50),
@@ -123,7 +123,7 @@ LLManipTranslate::LLManipTranslate( LLToolComposite* composite )
     mUpdateTimer(),
     mSnapOffsetMeters(0.f),
     mSubdivisions(10.f),
-    mInSnapRegime(FALSE),
+    mInSnapRegime(false),
     mArrowScales(1.f, 1.f, 1.f),
     mPlaneScales(1.f, 1.f, 1.f),
     mPlaneManipPositions(1.f, 1.f, 1.f, 1.f)
@@ -290,9 +290,9 @@ void LLManipTranslate::handleSelect()
     LLManip::handleSelect();
 }
 
-BOOL LLManipTranslate::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLManipTranslate::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     // didn't click in any UI object, so must have clicked in the world
     if( (mHighlightedPart == LL_X_ARROW ||
@@ -309,12 +309,12 @@ BOOL LLManipTranslate::handleMouseDown(S32 x, S32 y, MASK mask)
 }
 
 // Assumes that one of the arrows on an object was hit.
-BOOL LLManipTranslate::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
+bool LLManipTranslate::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
 {
-    BOOL can_move = canAffectSelection();
+    bool can_move = canAffectSelection();
     if (!can_move)
     {
-        return FALSE;
+        return false;
     }
 
     highlightManipulators(x, y);
@@ -327,7 +327,7 @@ BOOL LLManipTranslate::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
         (hit_part != LL_XZ_PLANE) &&
         (hit_part != LL_XY_PLANE) )
     {
-        return TRUE;
+        return true;
     }
 
     mHelpTextTimer.reset();
@@ -335,7 +335,7 @@ BOOL LLManipTranslate::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
 
     LLSelectMgr::getInstance()->getGrid(mGridOrigin, mGridRotation, mGridScale);
 
-    LLSelectMgr::getInstance()->enableSilhouette(FALSE);
+    LLSelectMgr::getInstance()->enableSilhouette(false);
 
     // we just started a drag, so save initial object positions
     LLSelectMgr::getInstance()->saveSelectedObjectTransform(SELECT_ACTION_TYPE_MOVE);
@@ -343,17 +343,17 @@ BOOL LLManipTranslate::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
     mManipPart = (EManipPart)hit_part;
     mMouseDownX = x;
     mMouseDownY = y;
-    mMouseOutsideSlop = FALSE;
+    mMouseOutsideSlop = false;
 
     LLVector3       axis;
 
-    LLSelectNode *selectNode = mObjectSelection->getFirstMoveableNode(TRUE);
+    LLSelectNode *selectNode = mObjectSelection->getFirstMoveableNode(true);
 
     if (!selectNode)
     {
         // didn't find the object in our selection...oh well
         LL_WARNS() << "Trying to translate an unselected object" << LL_ENDL;
-        return TRUE;
+        return true;
     }
 
     LLViewerObject *selected_object = selectNode->getObject();
@@ -362,11 +362,11 @@ BOOL LLManipTranslate::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
         // somehow we lost the object!
         LL_WARNS() << "Translate manip lost the object, no selected object" << LL_ENDL;
         gViewerWindow->setCursor(UI_CURSOR_TOOLTRANSLATE);
-        return TRUE;
+        return true;
     }
 
     // Compute unit vectors for arrow hit and a plane through that vector
-    BOOL axis_exists = getManipAxis(selected_object, mManipPart, axis);
+    bool axis_exists = getManipAxis(selected_object, mManipPart, axis);
     getManipNormal(selected_object, mManipPart, mManipNormal);
 
     //LLVector3 select_center_agent = gAgent.getPosAgentFromGlobal(LLSelectMgr::getInstance()->getSelectionCenterGlobal());
@@ -395,15 +395,15 @@ BOOL LLManipTranslate::handleMouseDownOnPart( S32 x, S32 y, MASK mask )
     LLVector3d object_start_global = gAgent.getPosGlobalFromAgent(getPivotPoint());
     getMousePointOnPlaneGlobal(mDragCursorStartGlobal, x, y, object_start_global, mManipNormal);
     mDragSelectionStartGlobal = object_start_global;
-    mCopyMadeThisDrag = FALSE;
+    mCopyMadeThisDrag = false;
 
     // Route future Mouse messages here preemptively.  (Release on mouse up.)
-    setMouseCapture( TRUE );
+    setMouseCapture( true );
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
+bool LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
 {
     // Translation tool only works if mouse button is down.
     // Bail out if mouse not down.
@@ -415,7 +415,7 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
         gViewerWindow->setCursor(UI_CURSOR_TOOLTRANSLATE);
 
         highlightManipulators(x, y);
-        return TRUE;
+        return true;
     }
 
     // Handle auto-rotation if necessary.
@@ -423,7 +423,7 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
     const F32 ROTATE_ANGLE_PER_SECOND = 30.f * DEG_TO_RAD;
     const S32 ROTATE_H_MARGIN = world_rect.getWidth() / 20;
     const F32 rotate_angle = ROTATE_ANGLE_PER_SECOND / gFPSClamped;
-    BOOL rotated = FALSE;
+    bool rotated = false;
 
     // ...build mode moves camera about focus point
     if (mObjectSelection->getSelectType() != SELECT_TYPE_HUD)
@@ -431,12 +431,12 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
         if (x < ROTATE_H_MARGIN)
         {
             gAgentCamera.cameraOrbitAround(rotate_angle);
-            rotated = TRUE;
+            rotated = true;
         }
         else if (x > world_rect.getWidth() - ROTATE_H_MARGIN)
         {
             gAgentCamera.cameraOrbitAround(-rotate_angle);
-            rotated = TRUE;
+            rotated = true;
         }
     }
 
@@ -447,7 +447,7 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
     {
         LL_DEBUGS("UserInput") << "hover handled by LLManipTranslate (mouse unmoved)" << LL_ENDL;
         gViewerWindow->setCursor(UI_CURSOR_TOOLTRANSLATE);
-        return TRUE;
+        return true;
     }
     mLastHoverMouseX = x;
     mLastHoverMouseY = y;
@@ -460,18 +460,18 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
         {
             LL_DEBUGS("UserInput") << "hover handled by LLManipTranslate (mouse inside slop)" << LL_ENDL;
             gViewerWindow->setCursor(UI_CURSOR_TOOLTRANSLATE);
-            return TRUE;
+            return true;
         }
         else
         {
             // ...just went outside the slop region
-            mMouseOutsideSlop = TRUE;
+            mMouseOutsideSlop = true;
             // If holding down shift, leave behind a copy.
             if (mask == MASK_COPY)
             {
                 // ...we're trying to make a copy
-                LLSelectMgr::getInstance()->selectDuplicate(LLVector3::zero, FALSE);
-                mCopyMadeThisDrag = TRUE;
+                LLSelectMgr::getInstance()->selectDuplicate(LLVector3::zero, false);
+                mCopyMadeThisDrag = true;
 
                 // When we make the copy, we don't want to do any other processing.
                 // If so, the object will also be moved, and the copy will be offset.
@@ -488,13 +488,13 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
 
     // pick the first object to constrain to grid w/ common origin
     // this is so we don't screw up groups
-    LLSelectNode* selectNode = mObjectSelection->getFirstMoveableNode(TRUE);
+    LLSelectNode* selectNode = mObjectSelection->getFirstMoveableNode(true);
     if (!selectNode)
     {
         // somehow we lost the object!
         LL_WARNS() << "Translate manip lost the object, no selectNode" << LL_ENDL;
         gViewerWindow->setCursor(UI_CURSOR_TOOLTRANSLATE);
-        return TRUE;
+        return true;
     }
 
     LLViewerObject* object = selectNode->getObject();
@@ -503,11 +503,11 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
         // somehow we lost the object!
         LL_WARNS() << "Translate manip lost the object, no object in selectNode" << LL_ENDL;
         gViewerWindow->setCursor(UI_CURSOR_TOOLTRANSLATE);
-        return TRUE;
+        return true;
     }
 
     // Compute unit vectors for arrow hit and a plane through that vector
-    BOOL axis_exists = getManipAxis(object, mManipPart, axis_f);        // TODO: move this
+    bool axis_exists = getManipAxis(object, mManipPart, axis_f);        // TODO: move this
 
     axis_d.setVec(axis_f);
 
@@ -530,7 +530,7 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
         {
             LL_DEBUGS("UserInput") << "hover handled by LLManipTranslate (too far)" << LL_ENDL;
             gViewerWindow->setCursor(UI_CURSOR_NOLOCKED);
-            return TRUE;
+            return true;
         }
     }
 
@@ -546,7 +546,7 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
     {
         if (off_axis_magnitude > mSnapOffsetMeters)
         {
-            mInSnapRegime = TRUE;
+            mInSnapRegime = true;
             LLVector3 cursor_snap_agent = gAgent.getPosAgentFromGlobal(cursor_point_snap_line);
 
             F32 cursor_grid_dist = (cursor_snap_agent - mGridOrigin) * axis_f;
@@ -630,16 +630,16 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
             }
             cursor_point_agent = (cursor_point_grid * mGridRotation) + mGridOrigin;
             relative_move.setVec(cursor_point_agent - gAgent.getPosAgentFromGlobal(mDragSelectionStartGlobal));
-            mInSnapRegime = TRUE;
+            mInSnapRegime = true;
         }
         else
         {
-            mInSnapRegime = FALSE;
+            mInSnapRegime = false;
         }
     }
     else
     {
-        mInSnapRegime = FALSE;
+        mInSnapRegime = false;
     }
 
     // Clamp to arrow direction
@@ -712,7 +712,7 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
                     if (selectNode->mIndividualSelection)
                     {
                         // counter-translate child objects if we are moving the root as an individual
-                        object->resetChildrenPosition(old_position_local - new_position_local, TRUE);
+                        object->resetChildrenPosition(old_position_local - new_position_local, true);
                     }
                 }
                 else
@@ -759,14 +759,14 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
                         LLViewerObject* root_object = object->getRootEdit();
                         new_position_agent -= root_object->getPositionAgent();
                         new_position_agent = new_position_agent * ~root_object->getRotation();
-                        object->setPositionParent(new_position_agent, FALSE);
+                        object->setPositionParent(new_position_agent, false);
                         rebuild(object);
                     }
 
                     if (selectNode->mIndividualSelection)
                     {
                         // counter-translate child objects if we are moving the root as an individual
-                        object->resetChildrenPosition(old_position_agent - new_position_agent, TRUE);
+                        object->resetChildrenPosition(old_position_agent - new_position_agent, true);
                     }
                 }
                 selectNode->mLastPositionLocal = object->getPosition();
@@ -781,7 +781,7 @@ BOOL LLManipTranslate::handleHover(S32 x, S32 y, MASK mask)
 
     LL_DEBUGS("UserInput") << "hover handled by LLManipTranslate (active)" << LL_ENDL;
     gViewerWindow->setCursor(UI_CURSOR_TOOLTRANSLATE);
-    return TRUE;
+    return true;
 }
 
 void LLManipTranslate::highlightManipulators(S32 x, S32 y)
@@ -857,9 +857,9 @@ void LLManipTranslate::highlightManipulators(S32 x, S32 y)
     S32 num_arrow_manips = numManips;
 
     // planar manipulators
-    BOOL planar_manip_yz_visible = FALSE;
-    BOOL planar_manip_xz_visible = FALSE;
-    BOOL planar_manip_xy_visible = FALSE;
+    bool planar_manip_yz_visible = false;
+    bool planar_manip_xz_visible = false;
+    bool planar_manip_xy_visible = false;
 
     mManipulatorVertices[numManips] = LLVector4(0.f, mPlaneManipOffsetMeters * (1.f - PLANE_TICK_SIZE * 0.5f), mPlaneManipOffsetMeters * (1.f - PLANE_TICK_SIZE * 0.5f), 1.f);
     mManipulatorVertices[numManips++].scaleVec(mPlaneManipPositions);
@@ -867,7 +867,7 @@ void LLManipTranslate::highlightManipulators(S32 x, S32 y)
     mManipulatorVertices[numManips++].scaleVec(mPlaneManipPositions);
     if (llabs(relative_camera_dir.mV[VX]) > MIN_PLANE_MANIP_DOT_PRODUCT)
     {
-        planar_manip_yz_visible = TRUE;
+        planar_manip_yz_visible = true;
     }
 
     mManipulatorVertices[numManips] = LLVector4(mPlaneManipOffsetMeters * (1.f - PLANE_TICK_SIZE * 0.5f), 0.f, mPlaneManipOffsetMeters * (1.f - PLANE_TICK_SIZE * 0.5f), 1.f);
@@ -876,7 +876,7 @@ void LLManipTranslate::highlightManipulators(S32 x, S32 y)
     mManipulatorVertices[numManips++].scaleVec(mPlaneManipPositions);
     if (llabs(relative_camera_dir.mV[VY]) > MIN_PLANE_MANIP_DOT_PRODUCT)
     {
-        planar_manip_xz_visible = TRUE;
+        planar_manip_xz_visible = true;
     }
 
     mManipulatorVertices[numManips] = LLVector4(mPlaneManipOffsetMeters * (1.f - PLANE_TICK_SIZE * 0.5f), mPlaneManipOffsetMeters * (1.f - PLANE_TICK_SIZE * 0.5f), 0.f, 1.f);
@@ -885,7 +885,7 @@ void LLManipTranslate::highlightManipulators(S32 x, S32 y)
     mManipulatorVertices[numManips++].scaleVec(mPlaneManipPositions);
     if (llabs(relative_camera_dir.mV[VZ]) > MIN_PLANE_MANIP_DOT_PRODUCT)
     {
-        planar_manip_xy_visible = TRUE;
+        planar_manip_xy_visible = true;
     }
 
     // Project up to 9 manipulators to screen space 2*X, 2*Y, 2*Z, 3*planes
@@ -1033,7 +1033,7 @@ F32 LLManipTranslate::getMinGridScale()
 }
 
 
-BOOL LLManipTranslate::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLManipTranslate::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     // first, perform normal processing in case this was a quick-click
     handleHover(x, y, mask);
@@ -1042,12 +1042,12 @@ BOOL LLManipTranslate::handleMouseUp(S32 x, S32 y, MASK mask)
     {
         // make sure arrow colors go back to normal
         mManipPart = LL_NO_PART;
-        LLSelectMgr::getInstance()->enableSilhouette(TRUE);
+        LLSelectMgr::getInstance()->enableSilhouette(true);
 
         // Might have missed last update due to UPDATE_DELAY timing.
         LLSelectMgr::getInstance()->sendMultipleUpdate( UPD_POSITION );
 
-        mInSnapRegime = FALSE;
+        mInSnapRegime = false;
         LLSelectMgr::getInstance()->saveSelectedObjectTransform(SELECT_ACTION_TYPE_PICK);
         //gAgent.setObjectTracking(gSavedSettings.getBOOL("TrackFocusObject"));
     }
@@ -1099,7 +1099,7 @@ void LLManipTranslate::renderSnapGuides()
         return;
     }
 
-    LLSelectNode *first_node = mObjectSelection->getFirstMoveableNode(TRUE);
+    LLSelectNode *first_node = mObjectSelection->getFirstMoveableNode(true);
     if (!first_node)
     {
         return;
@@ -1267,24 +1267,24 @@ void LLManipTranslate::renderSnapGuides()
                 LLVector3 line_end = selection_center + (mSnapOffsetMeters * mSnapOffsetAxis) - (translate_axis * (guide_size_meters * 0.5f + offset_nearest_grid_unit));
                 LLVector3 line_mid = (line_start + line_end) * 0.5f;
 
-                gGL.color4f(line_color.mV[VX], line_color.mV[VY], line_color.mV[VZ], line_color.mV[VW] * 0.2f);
+                gGL.color4f(line_color.mV[VRED], line_color.mV[VGREEN], line_color.mV[VBLUE], line_color.mV[VALPHA] * 0.2f);
                 gGL.vertex3fv(line_start.mV);
-                gGL.color4f(line_color.mV[VX], line_color.mV[VY], line_color.mV[VZ], line_color.mV[VW]);
+                gGL.color4f(line_color.mV[VRED], line_color.mV[VGREEN], line_color.mV[VBLUE], line_color.mV[VALPHA]);
                 gGL.vertex3fv(line_mid.mV);
                 gGL.vertex3fv(line_mid.mV);
-                gGL.color4f(line_color.mV[VX], line_color.mV[VY], line_color.mV[VZ], line_color.mV[VW] * 0.2f);
+                gGL.color4f(line_color.mV[VRED], line_color.mV[VGREEN], line_color.mV[VBLUE], line_color.mV[VALPHA] * 0.2f);
                 gGL.vertex3fv(line_end.mV);
 
                 line_start.setVec(selection_center + (mSnapOffsetAxis * -mSnapOffsetMeters) + (translate_axis * guide_size_meters * 0.5f));
                 line_end.setVec(selection_center + (mSnapOffsetAxis * -mSnapOffsetMeters) - (translate_axis * guide_size_meters * 0.5f));
                 line_mid = (line_start + line_end) * 0.5f;
 
-                gGL.color4f(line_color.mV[VX], line_color.mV[VY], line_color.mV[VZ], line_color.mV[VW] * 0.2f);
+                gGL.color4f(line_color.mV[VRED], line_color.mV[VGREEN], line_color.mV[VBLUE], line_color.mV[VALPHA] * 0.2f);
                 gGL.vertex3fv(line_start.mV);
-                gGL.color4f(line_color.mV[VX], line_color.mV[VY], line_color.mV[VZ], line_color.mV[VW]);
+                gGL.color4f(line_color.mV[VRED], line_color.mV[VGREEN], line_color.mV[VBLUE], line_color.mV[VALPHA]);
                 gGL.vertex3fv(line_mid.mV);
                 gGL.vertex3fv(line_mid.mV);
-                gGL.color4f(line_color.mV[VX], line_color.mV[VY], line_color.mV[VZ], line_color.mV[VW] * 0.2f);
+                gGL.color4f(line_color.mV[VRED], line_color.mV[VGREEN], line_color.mV[VBLUE], line_color.mV[VALPHA] * 0.2f);
                 gGL.vertex3fv(line_end.mV);
 
                 for (S32 i = -num_ticks_per_side; i <= num_ticks_per_side; i++)
@@ -1316,7 +1316,7 @@ void LLManipTranslate::renderSnapGuides()
 
                     tick_end = tick_start + (mSnapOffsetAxis * mSnapOffsetMeters * tick_scale);
 
-                    gGL.color4f(line_color.mV[VX], line_color.mV[VY], line_color.mV[VZ], line_color.mV[VW]);
+                    gGL.color4f(line_color.mV[VRED], line_color.mV[VGREEN], line_color.mV[VBLUE], line_color.mV[VALPHA]);
                     gGL.vertex3fv(tick_start.mV);
                     gGL.vertex3fv(tick_end.mV);
 
@@ -1337,7 +1337,7 @@ void LLManipTranslate::renderSnapGuides()
 
                 gGL.begin(LLRender::LINES);
                 {
-                    gGL.color4f(line_color.mV[VX], line_color.mV[VY], line_color.mV[VZ], line_color.mV[VW]);
+                    gGL.color4f(line_color.mV[VRED], line_color.mV[VGREEN], line_color.mV[VBLUE], line_color.mV[VALPHA]);
 
                     gGL.vertex3fv(line_start.mV);
                     gGL.vertex3fv(line_end.mV);
@@ -1347,7 +1347,7 @@ void LLManipTranslate::renderSnapGuides()
                 // draw snap guide arrow
                 gGL.begin(LLRender::TRIANGLES);
                 {
-                    gGL.color4f(line_color.mV[VX], line_color.mV[VY], line_color.mV[VZ], line_color.mV[VW]);
+                    gGL.color4f(line_color.mV[VRED], line_color.mV[VGREEN], line_color.mV[VBLUE], line_color.mV[VALPHA]);
 
                     LLVector3 arrow_dir;
                     LLVector3 arrow_span = translate_axis;
@@ -1573,13 +1573,13 @@ void LLManipTranslate::renderSnapGuides()
                     switch (mManipPart)
                     {
                       case LL_YZ_PLANE:
-                        renderGuidelines(FALSE, TRUE, TRUE);
+                        renderGuidelines(false, true, true);
                         break;
                       case LL_XZ_PLANE:
-                        renderGuidelines(TRUE, FALSE, TRUE);
+                        renderGuidelines(true, false, true);
                         break;
                       case LL_XY_PLANE:
-                        renderGuidelines(TRUE, TRUE, FALSE);
+                        renderGuidelines(true, true, false);
                         break;
                       default:
                         break;
@@ -1683,8 +1683,8 @@ void LLManipTranslate::highlightIntersection(LLVector3 normal,
         static LLStaticHashedString sClipPlane("clip_plane");
         gClipProgram.uniform4fv(sClipPlane, 1, plane.v);
 
-        BOOL particles = gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_PARTICLES);
-        BOOL clouds = gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_CLOUDS);
+        bool particles = gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_PARTICLES);
+        bool clouds = gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_CLOUDS);
 
         if (particles)
         {
@@ -1700,14 +1700,14 @@ void LLManipTranslate::highlightIntersection(LLVector3 normal,
         glCullFace(GL_FRONT);
         for (U32 i = 0; i < num_types; i++)
         {
-            gPipeline.renderObjects(types[i], LLVertexBuffer::MAP_VERTEX, FALSE);
+            gPipeline.renderObjects(types[i], LLVertexBuffer::MAP_VERTEX, false);
         }
 
         //glStencilOp(GL_DECR, GL_DECR, GL_DECR);
         glCullFace(GL_BACK);
         for (U32 i = 0; i < num_types; i++)
         {
-            gPipeline.renderObjects(types[i], LLVertexBuffer::MAP_VERTEX, FALSE);
+            gPipeline.renderObjects(types[i], LLVertexBuffer::MAP_VERTEX, false);
         }
 
         if (particles)
@@ -1738,11 +1738,6 @@ void LLManipTranslate::highlightIntersection(LLVector3 normal,
         shader->bind();
     }
 
-    if (shader)
-    {
-        shader->bind();
-    }
-
     //draw volume/plane intersections
     {
         gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
@@ -1770,7 +1765,7 @@ void LLManipTranslate::renderText()
     }
     else
     {
-        const BOOL children_ok = TRUE;
+        const bool children_ok = true;
         LLViewerObject* objectp = mObjectSelection->getFirstRootObject(children_ok);
         if (objectp)
         {
@@ -1824,7 +1819,7 @@ void LLManipTranslate::renderTranslationHandles()
         mPlaneManipPositions.mV[VZ] = -1.f;
     }
 
-    LLViewerObject *first_object = mObjectSelection->getFirstMoveableObject(TRUE);
+    LLViewerObject *first_object = mObjectSelection->getFirstMoveableObject(true);
     if (!first_object) return;
 
     LLVector3 selection_center = getPivotPoint();
@@ -2179,7 +2174,7 @@ void LLManipTranslate::renderTranslationHandles()
                             (face >= 3) ? -mConeSize : mConeSize,
                             (face >= 3) ? -mArrowLengthMeters : mArrowLengthMeters,
                             mConeSize,
-                            FALSE);
+                            false);
             }
         }
     }
@@ -2187,7 +2182,7 @@ void LLManipTranslate::renderTranslationHandles()
 }
 
 
-void LLManipTranslate::renderArrow(S32 which_arrow, S32 selected_arrow, F32 box_size, F32 arrow_size, F32 handle_size, BOOL reverse_direction)
+void LLManipTranslate::renderArrow(S32 which_arrow, S32 selected_arrow, F32 box_size, F32 arrow_size, F32 handle_size, bool reverse_direction)
 {
     gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
     LLGLEnable gls_blend(GL_BLEND);
@@ -2289,9 +2284,9 @@ void LLManipTranslate::renderGridVert(F32 x_trans, F32 y_trans, F32 r, F32 g, F3
 }
 
 // virtual
-BOOL LLManipTranslate::canAffectSelection()
+bool LLManipTranslate::canAffectSelection()
 {
-    BOOL can_move = mObjectSelection->getObjectCount() != 0;
+    bool can_move = mObjectSelection->getObjectCount() != 0;
     if (can_move)
     {
         struct f : public LLSelectedObjectFunctor
diff --git a/indra/newview/llmaniptranslate.h b/indra/newview/llmaniptranslate.h
index 60621c8498..c0109db658 100644
--- a/indra/newview/llmaniptranslate.h
+++ b/indra/newview/llmaniptranslate.h
@@ -53,15 +53,15 @@ public:
     static  U32     getGridTexName() ;
     static  void    destroyGL();
     static  void    restoreGL();
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
     virtual void    render();
     virtual void    handleSelect();
 
     virtual void    highlightManipulators(S32 x, S32 y);
-    virtual BOOL    handleMouseDownOnPart(S32 x, S32 y, MASK mask);
-    virtual BOOL    canAffectSelection();
+    virtual bool    handleMouseDownOnPart(S32 x, S32 y, MASK mask);
+    virtual bool    canAffectSelection();
 
 protected:
     enum EHandleType {
@@ -70,7 +70,7 @@ protected:
         HANDLE_SPHERE
     };
 
-    void        renderArrow(S32 which_arrow, S32 selected_arrow, F32 box_size, F32 arrow_size, F32 handle_size, BOOL reverse_direction);
+    void        renderArrow(S32 which_arrow, S32 selected_arrow, F32 box_size, F32 arrow_size, F32 handle_size, bool reverse_direction);
     void        renderTranslationHandles();
     void        renderText();
     void        renderSnapGuides();
@@ -85,8 +85,8 @@ protected:
 private:
     S32         mLastHoverMouseX;
     S32         mLastHoverMouseY;
-    BOOL        mMouseOutsideSlop;      // true after mouse goes outside slop region
-    BOOL        mCopyMadeThisDrag;
+    bool        mMouseOutsideSlop;      // true after mouse goes outside slop region
+    bool        mCopyMadeThisDrag;
     S32         mMouseDownX;
     S32         mMouseDownY;
     F32         mAxisArrowLength;       // pixels
@@ -105,7 +105,7 @@ private:
     LLVector3   mGridOrigin;
     LLVector3   mGridScale;
     F32         mSubdivisions;
-    BOOL        mInSnapRegime;
+    bool        mInSnapRegime;
     LLVector3   mArrowScales;
     LLVector3   mPlaneScales;
     LLVector4   mPlaneManipPositions;
diff --git a/indra/newview/llmarketplacefunctions.cpp b/indra/newview/llmarketplacefunctions.cpp
index c0dd8bf208..7b8211ded8 100644
--- a/indra/newview/llmarketplacefunctions.cpp
+++ b/indra/newview/llmarketplacefunctions.cpp
@@ -42,8 +42,6 @@
 #include "llviewermedia.h"
 #include "llviewernetwork.h"
 #include "llviewerregion.h"
-#include "json/reader.h" // JSON
-#include "json/writer.h" // JSON
 #include "lleventcoro.h"
 #include "llcoros.h"
 #include "llcorehttputil.h"
diff --git a/indra/newview/llmaterialeditor.cpp b/indra/newview/llmaterialeditor.cpp
index 36a0834845..92f8ed949e 100644
--- a/indra/newview/llmaterialeditor.cpp
+++ b/indra/newview/llmaterialeditor.cpp
@@ -104,17 +104,17 @@ LLFloaterComboOptions::~LLFloaterComboOptions()
 
 }
 
-BOOL LLFloaterComboOptions::postBuild()
+bool LLFloaterComboOptions::postBuild()
 {
-    mConfirmButton = getChild<LLButton>("combo_ok", TRUE);
-    mCancelButton = getChild<LLButton>("combo_cancel", TRUE);
-    mComboOptions = getChild<LLComboBox>("combo_options", TRUE);
-    mComboText = getChild<LLTextBox>("combo_text", TRUE);
+    mConfirmButton = getChild<LLButton>("combo_ok", true);
+    mCancelButton = getChild<LLButton>("combo_cancel", true);
+    mComboOptions = getChild<LLComboBox>("combo_options", true);
+    mComboText = getChild<LLTextBox>("combo_text", true);
 
     mConfirmButton->setCommitCallback([this](LLUICtrl* ctrl, const LLSD& param) {onConfirm(); });
     mCancelButton->setCommitCallback([this](LLUICtrl* ctrl, const LLSD& param) {onCancel(); });
 
-    return TRUE;
+    return true;
 }
 
 LLFloaterComboOptions* LLFloaterComboOptions::showUI(
@@ -140,7 +140,7 @@ LLFloaterComboOptions* LLFloaterComboOptions::showUI(
         combo_picker->mComboOptions->selectFirstItem();
 
         combo_picker->openFloater(LLSD(title));
-        combo_picker->setFocus(TRUE);
+        combo_picker->setFocus(true);
         combo_picker->center();
     }
     return combo_picker;
@@ -421,7 +421,7 @@ void LLMaterialEditor::setAuxItem(const LLInventoryItem* item)
     }
 }
 
-BOOL LLMaterialEditor::postBuild()
+bool LLMaterialEditor::postBuild()
 {
     // if this is a 'live editor' instance, it is also
     // single instance and uses live overrides
@@ -482,10 +482,10 @@ BOOL LLMaterialEditor::postBuild()
 
     if (mIsOverride)
     {
-        childSetVisible("base_color_upload_fee", FALSE);
-        childSetVisible("metallic_upload_fee", FALSE);
-        childSetVisible("emissive_upload_fee", FALSE);
-        childSetVisible("normal_upload_fee", FALSE);
+        childSetVisible("base_color_upload_fee", false);
+        childSetVisible("metallic_upload_fee", false);
+        childSetVisible("emissive_upload_fee", false);
+        childSetVisible("normal_upload_fee", false);
     }
     else
     {
@@ -615,7 +615,7 @@ void LLMaterialEditor::setBaseColorId(const LLUUID& id)
 {
     mBaseColorTextureCtrl->setValue(id);
     mBaseColorTextureCtrl->setDefaultImageAssetID(id);
-    mBaseColorTextureCtrl->setTentative(FALSE);
+    mBaseColorTextureCtrl->setTentative(false);
 }
 
 void LLMaterialEditor::setBaseColorUploadId(const LLUUID& id)
@@ -691,7 +691,7 @@ void LLMaterialEditor::setMetallicRoughnessId(const LLUUID& id)
 {
     mMetallicTextureCtrl->setValue(id);
     mMetallicTextureCtrl->setDefaultImageAssetID(id);
-    mMetallicTextureCtrl->setTentative(FALSE);
+    mMetallicTextureCtrl->setTentative(false);
 }
 
 void LLMaterialEditor::setMetallicRoughnessUploadId(const LLUUID& id)
@@ -735,7 +735,7 @@ void LLMaterialEditor::setEmissiveId(const LLUUID& id)
 {
     mEmissiveTextureCtrl->setValue(id);
     mEmissiveTextureCtrl->setDefaultImageAssetID(id);
-    mEmissiveTextureCtrl->setTentative(FALSE);
+    mEmissiveTextureCtrl->setTentative(false);
 }
 
 void LLMaterialEditor::setEmissiveUploadId(const LLUUID& id)
@@ -769,7 +769,7 @@ void LLMaterialEditor::setNormalId(const LLUUID& id)
 {
     mNormalTextureCtrl->setValue(id);
     mNormalTextureCtrl->setDefaultImageAssetID(id);
-    mNormalTextureCtrl->setTentative(FALSE);
+    mNormalTextureCtrl->setTentative(false);
 }
 
 void LLMaterialEditor::setNormalUploadId(const LLUUID& id)
@@ -1263,7 +1263,7 @@ bool LLMaterialEditor::decodeAsset(const std::vector<char>& buffer)
 
                     tinygltf::Model model_in;
 
-                    if (loader.LoadASCIIFromString(&model_in, &error_msg, &warn_msg, data.c_str(), data.length(), ""))
+                    if (loader.LoadASCIIFromString(&model_in, &error_msg, &warn_msg, data.c_str(), static_cast<unsigned int>(data.length()), ""))
                     {
                         // assets are only supposed to have one item
                         // *NOTE: This duplicates some functionality from
@@ -2055,7 +2055,7 @@ void LLMaterialEditor::loadLive()
         }
 
         me->openFloater();
-        me->setFocus(TRUE);
+        me->setFocus(true);
     }
 }
 
@@ -2549,7 +2549,7 @@ void LLMaterialEditor::loadMaterial(const tinygltf::Model &model_in, const std::
     if (open_floater)
     {
         openFloater(getKey());
-        setFocus(TRUE);
+        setFocus(true);
         setCanSave(true);
         setCanSaveAs(true);
 
@@ -2674,7 +2674,7 @@ const std::string LLMaterialEditor::getImageNameFromUri(std::string image_uri, c
     }
 
     // uri doesn't include the type at all
-    if (name_includes_type == false)
+    if (!name_includes_type)
     {
         // uri doesn't include the type and the uri is not empty
         // so we can include everything
@@ -3387,7 +3387,7 @@ void LLMaterialEditor::loadAsset()
                     LLAssetType::AT_MATERIAL,
                     &onLoadComplete,
                     (void*)user_data,
-                    TRUE);
+                    true);
             }
         }
     }
@@ -3419,7 +3419,7 @@ void LLMaterialEditor::loadAsset()
     {
         /*editor->setText(LLStringUtil::null);
         editor->makePristine();
-        editor->setEnabled(TRUE);*/
+        editor->setEnabled(true);*/
         // Don't set asset status here; we may not have set the item id yet
         // (e.g. when this gets called initially)
         //mAssetStatus = PREVIEW_ASSET_LOADED;
@@ -3451,8 +3451,8 @@ void LLMaterialEditor::onLoadComplete(const LLUUID& asset_uuid,
 
             editor->decodeAsset(buffer);
 
-            BOOL allow_modify = editor->canModify(editor->mObjectUUID, editor->getItem());
-            BOOL source_library = editor->mObjectUUID.isNull() && gInventory.isObjectDescendentOf(editor->mItemUUID, gInventory.getLibraryRootFolderID());
+            bool allow_modify = editor->canModify(editor->mObjectUUID, editor->getItem());
+            bool source_library = editor->mObjectUUID.isNull() && gInventory.isObjectDescendentOf(editor->mItemUUID, gInventory.getLibraryRootFolderID());
             editor->setEnableEditing(allow_modify && !source_library);
             editor->resetUnsavedChanges();
             editor->mAssetStatus = PREVIEW_ASSET_LOADED;
@@ -3500,6 +3500,8 @@ void LLMaterialEditor::inventoryChanged(LLViewerObject* object,
 
 void LLMaterialEditor::saveTexture(LLImageJ2C* img, const std::string& name, const LLUUID& asset_id, upload_callback_f cb)
 {
+    LLImageDataSharedLock lock(img);
+
     if (asset_id.isNull()
         || img == nullptr
         || img->getDataSize() == 0)
diff --git a/indra/newview/llmaterialeditor.h b/indra/newview/llmaterialeditor.h
index 11809d26be..232467460e 100644
--- a/indra/newview/llmaterialeditor.h
+++ b/indra/newview/llmaterialeditor.h
@@ -55,7 +55,7 @@ public:
     LLFloaterComboOptions();
 
     virtual ~LLFloaterComboOptions();
-    /*virtual*/ BOOL    postBuild();
+    /*virtual*/ bool    postBuild();
 
     static LLFloaterComboOptions* showUI(
         combo_callback callback,
@@ -164,7 +164,7 @@ class LLMaterialEditor : public LLPreview, public LLVOInventoryListener
     void setAuxItem(const LLInventoryItem* item) override;
 
     // llpanel
-    BOOL postBuild() override;
+    bool postBuild() override;
     void onClickCloseBtn(bool app_quitting = false) override;
 
     void onClose(bool app_quitting) override;
diff --git a/indra/newview/llmaterialmgr.cpp b/indra/newview/llmaterialmgr.cpp
index 271a35ba42..ee5e5b438e 100644
--- a/indra/newview/llmaterialmgr.cpp
+++ b/indra/newview/llmaterialmgr.cpp
@@ -431,7 +431,7 @@ void LLMaterialMgr::onGetResponse(bool success, const LLSD& content, const LLUUI
     const LLSD::Binary& content_binary = content[MATERIALS_CAP_ZIP_FIELD].asBinary();
 
     LLSD response_data;
-    U32 uzip_result = LLUZipHelper::unzip_llsd(response_data, content_binary.data(), content_binary.size());
+    U32 uzip_result = LLUZipHelper::unzip_llsd(response_data, content_binary.data(), static_cast<S32>(content_binary.size()));
     if (uzip_result != LLUZipHelper::ZR_OK)
     {
         LL_WARNS("Materials") << "Cannot unzip LLSD binary content: " << uzip_result << LL_ENDL;
@@ -472,7 +472,7 @@ void LLMaterialMgr::onGetAllResponse(bool success, const LLSD& content, const LL
     const LLSD::Binary& content_binary = content[MATERIALS_CAP_ZIP_FIELD].asBinary();
 
     LLSD response_data;
-    U32 uzip_result = LLUZipHelper::unzip_llsd(response_data, content_binary.data(), content_binary.size());
+    U32 uzip_result = LLUZipHelper::unzip_llsd(response_data, content_binary.data(), static_cast<S32>(content_binary.size()));
     if (uzip_result != LLUZipHelper::ZR_OK)
     {
         LL_WARNS("Materials") << "Cannot unzip LLSD binary content: " << uzip_result << LL_ENDL;
@@ -539,7 +539,7 @@ void LLMaterialMgr::onPutResponse(bool success, const LLSD& content)
     const LLSD::Binary& content_binary = content[MATERIALS_CAP_ZIP_FIELD].asBinary();
 
     LLSD response_data;
-    U32 uzip_result = LLUZipHelper::unzip_llsd(response_data, content_binary.data(), content_binary.size());
+    U32 uzip_result = LLUZipHelper::unzip_llsd(response_data, content_binary.data(), static_cast<S32>(content_binary.size()));
     if (uzip_result != LLUZipHelper::ZR_OK)
     {
         LL_WARNS("Materials") << "Cannot unzip LLSD binary content: " << uzip_result << LL_ENDL;
@@ -670,7 +670,7 @@ void LLMaterialMgr::processGetQueue()
 
         std::string materialString = zip_llsd(materialsData);
 
-        S32 materialSize = materialString.size();
+        auto materialSize = materialString.size();
         if (materialSize <= 0)
         {
             LL_ERRS("Materials") << "cannot zip LLSD binary content" << LL_ENDL;
@@ -960,7 +960,7 @@ void LLMaterialMgr::processPutQueue()
 
         std::string materialString = zip_llsd(materialsData);
 
-        S32 materialSize = materialString.size();
+        auto materialSize = materialString.size();
 
         if (materialSize > 0)
         {
diff --git a/indra/newview/llmaterialmgr.h b/indra/newview/llmaterialmgr.h
index 94cb1c0e15..1279b77ad4 100644
--- a/indra/newview/llmaterialmgr.h
+++ b/indra/newview/llmaterialmgr.h
@@ -102,7 +102,7 @@ private:
         const LLMaterialMgr::TEMaterialPair& lhs,
         const LLMaterialMgr::TEMaterialPair& rhs)
     {
-        return (lhs.te  < rhs.te) ? TRUE :
+        return (lhs.te  < rhs.te) ? true :
             (lhs.materialID < rhs.materialID);
     }
 
diff --git a/indra/newview/llmediactrl.cpp b/indra/newview/llmediactrl.cpp
index 72783408b8..b39a976ebd 100644
--- a/indra/newview/llmediactrl.cpp
+++ b/indra/newview/llmediactrl.cpp
@@ -63,7 +63,7 @@
 #include "llfloaterwebcontent.h"
 #include "llwindowshade.h"
 
-extern BOOL gRestoreGL;
+extern bool gRestoreGL;
 
 static LLDefaultChildRegistry::Register<LLMediaCtrl> r("web_browser");
 
@@ -166,7 +166,7 @@ LLMediaCtrl::~LLMediaCtrl()
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-void LLMediaCtrl::setBorderVisible( BOOL border_visible )
+void LLMediaCtrl::setBorderVisible( bool border_visible )
 {
     if ( mBorder )
     {
@@ -183,9 +183,9 @@ void LLMediaCtrl::setTakeFocusOnClick( bool take_focus )
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::handleHover( S32 x, S32 y, MASK mask )
+bool LLMediaCtrl::handleHover( S32 x, S32 y, MASK mask )
 {
-    if (LLPanel::handleHover(x, y, mask)) return TRUE;
+    if (LLPanel::handleHover(x, y, mask)) return true;
     convertInputCoords(x, y);
 
     if (mMediaSource)
@@ -201,40 +201,40 @@ BOOL LLMediaCtrl::handleHover( S32 x, S32 y, MASK mask )
         handleToolTip(x, y, mask);
     }
 
-    return TRUE;
+    return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::handleScrollWheel( S32 x, S32 y, S32 clicks )
+bool LLMediaCtrl::handleScrollWheel( S32 x, S32 y, S32 clicks )
 {
-    if (LLPanel::handleScrollWheel(x, y, clicks)) return TRUE;
+    if (LLPanel::handleScrollWheel(x, y, clicks)) return true;
     if (mMediaSource && mMediaSource->hasMedia())
     {
         convertInputCoords(x, y);
-        mMediaSource->scrollWheel(x, y, 0, clicks, gKeyboard->currentMask(TRUE));
+        mMediaSource->scrollWheel(x, y, 0, clicks, gKeyboard->currentMask(true));
     }
 
-    return TRUE;
+    return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::handleScrollHWheel(S32 x, S32 y, S32 clicks)
+bool LLMediaCtrl::handleScrollHWheel(S32 x, S32 y, S32 clicks)
 {
-    if (LLPanel::handleScrollHWheel(x, y, clicks)) return TRUE;
+    if (LLPanel::handleScrollHWheel(x, y, clicks)) return true;
     if (mMediaSource && mMediaSource->hasMedia())
     {
         convertInputCoords(x, y);
-        mMediaSource->scrollWheel(x, y, clicks, 0, gKeyboard->currentMask(TRUE));
+        mMediaSource->scrollWheel(x, y, clicks, 0, gKeyboard->currentMask(true));
     }
 
-    return TRUE;
+    return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //  virtual
-BOOL LLMediaCtrl::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLMediaCtrl::handleToolTip(S32 x, S32 y, MASK mask)
 {
     std::string hover_text;
 
@@ -243,7 +243,7 @@ BOOL LLMediaCtrl::handleToolTip(S32 x, S32 y, MASK mask)
 
     if(hover_text.empty())
     {
-        return FALSE;
+        return false;
     }
     else
     {
@@ -258,14 +258,14 @@ BOOL LLMediaCtrl::handleToolTip(S32 x, S32 y, MASK mask)
             .sticky_rect(sticky_rect_screen));
     }
 
-    return TRUE;
+    return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::handleMouseUp( S32 x, S32 y, MASK mask )
+bool LLMediaCtrl::handleMouseUp( S32 x, S32 y, MASK mask )
 {
-    if (LLPanel::handleMouseUp(x, y, mask)) return TRUE;
+    if (LLPanel::handleMouseUp(x, y, mask)) return true;
     convertInputCoords(x, y);
 
     if (mMediaSource)
@@ -275,14 +275,14 @@ BOOL LLMediaCtrl::handleMouseUp( S32 x, S32 y, MASK mask )
 
     gFocusMgr.setMouseCapture( NULL );
 
-    return TRUE;
+    return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::handleMouseDown( S32 x, S32 y, MASK mask )
+bool LLMediaCtrl::handleMouseDown( S32 x, S32 y, MASK mask )
 {
-    if (LLPanel::handleMouseDown(x, y, mask)) return TRUE;
+    if (LLPanel::handleMouseDown(x, y, mask)) return true;
     convertInputCoords(x, y);
 
     if (mMediaSource)
@@ -292,17 +292,17 @@ BOOL LLMediaCtrl::handleMouseDown( S32 x, S32 y, MASK mask )
 
     if (mTakeFocusOnClick)
     {
-        setFocus( TRUE );
+        setFocus( true );
     }
 
-    return TRUE;
+    return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::handleRightMouseUp( S32 x, S32 y, MASK mask )
+bool LLMediaCtrl::handleRightMouseUp( S32 x, S32 y, MASK mask )
 {
-    if (LLPanel::handleRightMouseUp(x, y, mask)) return TRUE;
+    if (LLPanel::handleRightMouseUp(x, y, mask)) return true;
     convertInputCoords(x, y);
 
     if (mMediaSource)
@@ -320,14 +320,14 @@ BOOL LLMediaCtrl::handleRightMouseUp( S32 x, S32 y, MASK mask )
 
     gFocusMgr.setMouseCapture( NULL );
 
-    return TRUE;
+    return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::handleRightMouseDown( S32 x, S32 y, MASK mask )
+bool LLMediaCtrl::handleRightMouseDown( S32 x, S32 y, MASK mask )
 {
-    if (LLPanel::handleRightMouseDown(x, y, mask)) return TRUE;
+    if (LLPanel::handleRightMouseDown(x, y, mask)) return true;
 
     S32 media_x = x, media_y = y;
     convertInputCoords(media_x, media_y);
@@ -339,7 +339,7 @@ BOOL LLMediaCtrl::handleRightMouseDown( S32 x, S32 y, MASK mask )
 
     if (mTakeFocusOnClick)
     {
-        setFocus( TRUE );
+        setFocus( true );
     }
 
     auto menu = mContextMenuHandle.get();
@@ -371,14 +371,14 @@ BOOL LLMediaCtrl::handleRightMouseDown( S32 x, S32 y, MASK mask )
         LLMenuGL::showPopup(this, menu, x, y);
     }
 
-    return TRUE;
+    return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::handleDoubleClick( S32 x, S32 y, MASK mask )
+bool LLMediaCtrl::handleDoubleClick( S32 x, S32 y, MASK mask )
 {
-    if (LLPanel::handleDoubleClick(x, y, mask)) return TRUE;
+    if (LLPanel::handleDoubleClick(x, y, mask)) return true;
     convertInputCoords(x, y);
 
     if (mMediaSource)
@@ -388,10 +388,10 @@ BOOL LLMediaCtrl::handleDoubleClick( S32 x, S32 y, MASK mask )
 
     if (mTakeFocusOnClick)
     {
-        setFocus( TRUE );
+        setFocus( true );
     }
 
-    return TRUE;
+    return true;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -431,11 +431,11 @@ void LLMediaCtrl::onFocusLost()
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::postBuild ()
+bool LLMediaCtrl::postBuild ()
 {
     setVisibleCallback(boost::bind(&LLMediaCtrl::onVisibilityChanged, this, _2));
 
-    return TRUE;
+    return true;
 }
 
 void LLMediaCtrl::onOpenWebInspector()
@@ -446,9 +446,9 @@ void LLMediaCtrl::onOpenWebInspector()
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::handleKeyHere( KEY key, MASK mask )
+bool LLMediaCtrl::handleKeyHere( KEY key, MASK mask )
 {
-    BOOL result = FALSE;
+    bool result = false;
 
     if (mMediaSource)
     {
@@ -463,9 +463,9 @@ BOOL LLMediaCtrl::handleKeyHere( KEY key, MASK mask )
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::handleKeyUpHere(KEY key, MASK mask)
+bool LLMediaCtrl::handleKeyUpHere(KEY key, MASK mask)
 {
-    BOOL result = FALSE;
+    bool result = false;
 
     if (mMediaSource)
     {
@@ -480,7 +480,7 @@ BOOL LLMediaCtrl::handleKeyUpHere(KEY key, MASK mask)
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-void LLMediaCtrl::onVisibilityChange ( BOOL new_visibility )
+void LLMediaCtrl::onVisibilityChange ( bool new_visibility )
 {
     LL_INFOS() << "visibility changed to " << (new_visibility?"true":"false") << LL_ENDL;
     if(mMediaSource)
@@ -491,9 +491,9 @@ void LLMediaCtrl::onVisibilityChange ( BOOL new_visibility )
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLMediaCtrl::handleUnicodeCharHere(llwchar uni_char)
+bool LLMediaCtrl::handleUnicodeCharHere(llwchar uni_char)
 {
-    BOOL result = FALSE;
+    bool result = false;
 
     if (mMediaSource)
     {
@@ -523,7 +523,7 @@ void LLMediaCtrl::onVisibilityChanged ( const LLSD& new_visibility )
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-void LLMediaCtrl::reshape( S32 width, S32 height, BOOL called_from_parent )
+void LLMediaCtrl::reshape( S32 width, S32 height, bool called_from_parent )
 {
     if(!getDecoupleTextureSize())
     {
@@ -782,7 +782,7 @@ void LLMediaCtrl::draw()
     if ( gRestoreGL == 1 || mUpdateScrolls)
     {
         LLRect r = getRect();
-        reshape( r.getWidth(), r.getHeight(), FALSE );
+        reshape( r.getWidth(), r.getHeight(), false );
         mUpdateScrolls = false;
         return;
     }
@@ -990,7 +990,7 @@ void LLMediaCtrl::handleMediaEvent(LLPluginClassMedia* self, EMediaEvent event)
         {
             LL_DEBUGS("Media") <<  "Media event:  MEDIA_EVENT_SIZE_CHANGED " << LL_ENDL;
             LLRect r = getRect();
-            reshape( r.getWidth(), r.getHeight(), FALSE );
+            reshape( r.getWidth(), r.getHeight(), false );
         };
         break;
 
diff --git a/indra/newview/llmediactrl.h b/indra/newview/llmediactrl.h
index 899eab1fea..9f9564af46 100644
--- a/indra/newview/llmediactrl.h
+++ b/indra/newview/llmediactrl.h
@@ -77,7 +77,7 @@ protected:
 public:
         virtual ~LLMediaCtrl();
 
-        void setBorderVisible( BOOL border_visible );
+        void setBorderVisible( bool border_visible );
 
         // For the tutorial window, we don't want to take focus on clicks,
         // as the examples include how to move around with the arrow
@@ -86,15 +86,15 @@ public:
         void setTakeFocusOnClick( bool take_focus );
 
         // handle mouse related methods
-        virtual BOOL handleHover( S32 x, S32 y, MASK mask );
-        virtual BOOL handleMouseUp( S32 x, S32 y, MASK mask );
-        virtual BOOL handleMouseDown( S32 x, S32 y, MASK mask );
-        virtual BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-        virtual BOOL handleRightMouseUp(S32 x, S32 y, MASK mask);
-        virtual BOOL handleDoubleClick( S32 x, S32 y, MASK mask );
-        virtual BOOL handleScrollWheel( S32 x, S32 y, S32 clicks );
-        virtual BOOL handleScrollHWheel( S32 x, S32 y, S32 clicks );
-        virtual BOOL handleToolTip(S32 x, S32 y, MASK mask);
+        virtual bool handleHover( S32 x, S32 y, MASK mask );
+        virtual bool handleMouseUp( S32 x, S32 y, MASK mask );
+        virtual bool handleMouseDown( S32 x, S32 y, MASK mask );
+        virtual bool handleRightMouseDown(S32 x, S32 y, MASK mask);
+        virtual bool handleRightMouseUp(S32 x, S32 y, MASK mask);
+        virtual bool handleDoubleClick( S32 x, S32 y, MASK mask );
+        virtual bool handleScrollWheel( S32 x, S32 y, S32 clicks );
+        virtual bool handleScrollHWheel( S32 x, S32 y, S32 clicks );
+        virtual bool handleToolTip(S32 x, S32 y, MASK mask);
 
         // navigation
         void navigateTo( std::string url_in, std::string mime_type = "", bool clean_browser = false);
@@ -154,13 +154,13 @@ public:
         void setAllowFileDownload(bool allow) { mAllowFileDownload = allow; }
 
         // over-rides
-        virtual BOOL handleKeyHere( KEY key, MASK mask);
-        virtual BOOL handleKeyUpHere(KEY key, MASK mask);
-        virtual void onVisibilityChange ( BOOL new_visibility );
-        virtual BOOL handleUnicodeCharHere(llwchar uni_char);
-        virtual void reshape( S32 width, S32 height, BOOL called_from_parent = TRUE);
+        virtual bool handleKeyHere( KEY key, MASK mask);
+        virtual bool handleKeyUpHere(KEY key, MASK mask);
+        virtual void onVisibilityChange ( bool new_visibility );
+        virtual bool handleUnicodeCharHere(llwchar uni_char);
+        virtual void reshape( S32 width, S32 height, bool called_from_parent = true);
         virtual void draw();
-        virtual BOOL postBuild();
+        virtual bool postBuild();
 
         // focus overrides
         void onFocusLost();
@@ -178,7 +178,7 @@ public:
         virtual bool    wantsKeyUpKeyDown() const;
         virtual bool    wantsReturnKey() const;
 
-        virtual BOOL    acceptsTextInput() const {return TRUE;}
+        virtual bool    acceptsTextInput() const { return true; }
 
     protected:
         void convertInputCoords(S32& x, S32& y);
diff --git a/indra/newview/llmediadataclient.cpp b/indra/newview/llmediadataclient.cpp
index 52898d1b86..0f3e0306af 100644
--- a/indra/newview/llmediadataclient.cpp
+++ b/indra/newview/llmediadataclient.cpp
@@ -418,9 +418,9 @@ LLMediaDataClient::QueueTimer::QueueTimer(F32 time, LLMediaDataClient *mdc)
 }
 
 // virtual
-BOOL LLMediaDataClient::QueueTimer::tick()
+bool LLMediaDataClient::QueueTimer::tick()
 {
-    BOOL result = TRUE;
+    bool result = true;
 
     if (!mMDC.isNull())
     {
@@ -451,7 +451,7 @@ LLMediaDataClient::RetryTimer::RetryTimer(F32 time, Request::ptr_t request)
 }
 
 // virtual
-BOOL LLMediaDataClient::RetryTimer::tick()
+bool LLMediaDataClient::RetryTimer::tick()
 {
     mRequest->stopTracking();
 
@@ -469,7 +469,7 @@ BOOL LLMediaDataClient::RetryTimer::tick()
     mRequest.reset();
 
     // Don't fire again
-    return TRUE;
+    return true;
 }
 
 
@@ -692,7 +692,7 @@ void LLObjectMediaDataClient::sortQueue()
         mQueue.sort(compareRequestScores);
 
         // ...then cull items over the max
-        U32 size = mQueue.size();
+        U32 size = static_cast<U32>(mQueue.size());
         if (size > mMaxSortedQueueSize)
         {
             U32 num_to_cull = (size - mMaxSortedQueueSize);
diff --git a/indra/newview/llmediadataclient.h b/indra/newview/llmediadataclient.h
index ae5e5cd5d4..ca035e79e0 100644
--- a/indra/newview/llmediadataclient.h
+++ b/indra/newview/llmediadataclient.h
@@ -219,7 +219,7 @@ protected:
     {
     public:
         RetryTimer(F32 time, Request::ptr_t);
-        virtual BOOL tick();
+        virtual bool tick();
     private:
         // back-pointer
         Request::ptr_t mRequest;
@@ -286,7 +286,7 @@ private:
     {
     public:
         QueueTimer(F32 time, LLMediaDataClient *mdc);
-        virtual BOOL tick();
+        virtual bool tick();
     private:
         // back-pointer
         LLPointer<LLMediaDataClient> mMDC;
diff --git a/indra/newview/llmenuoptionpathfindingrebakenavmesh.cpp b/indra/newview/llmenuoptionpathfindingrebakenavmesh.cpp
index 1555db6830..54c1b0610e 100644
--- a/indra/newview/llmenuoptionpathfindingrebakenavmesh.cpp
+++ b/indra/newview/llmenuoptionpathfindingrebakenavmesh.cpp
@@ -161,7 +161,7 @@ void LLMenuOptionPathfindingRebakeNavmesh::setMode(ERebakeNavMeshMode pRebakeNav
     mRebakeNavMeshMode = pRebakeNavMeshMode;
 }
 
-void LLMenuOptionPathfindingRebakeNavmesh::handleAgentState(BOOL pCanRebakeRegion)
+void LLMenuOptionPathfindingRebakeNavmesh::handleAgentState(bool pCanRebakeRegion)
 {
     llassert(mIsInitialized);
     mCanRebakeRegion = pCanRebakeRegion;
@@ -221,7 +221,7 @@ void LLMenuOptionPathfindingRebakeNavmesh::handleRegionBoundaryCrossed()
     if (mIsInitialized)
     {
         createNavMeshStatusListenerForCurrentRegion();
-        mCanRebakeRegion = FALSE;
+        mCanRebakeRegion = false;
         LLPathfindingManager::getInstance()->requestGetAgentState();
     }
 }
diff --git a/indra/newview/llmenuoptionpathfindingrebakenavmesh.h b/indra/newview/llmenuoptionpathfindingrebakenavmesh.h
index 22eda5b8f8..5a153f762a 100644
--- a/indra/newview/llmenuoptionpathfindingrebakenavmesh.h
+++ b/indra/newview/llmenuoptionpathfindingrebakenavmesh.h
@@ -65,7 +65,7 @@ protected:
 private:
     void setMode(ERebakeNavMeshMode pRebakeNavMeshMode);
 
-    void handleAgentState(BOOL pCanRebakeRegion);
+    void handleAgentState(bool pCanRebakeRegion);
     void handleRebakeNavMeshResponse(bool pResponseStatus);
     void handleNavMeshStatus(const LLPathfindingNavMeshStatus &pNavMeshStatus);
     void handleRegionBoundaryCrossed();
diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
index f6441f8404..01c922df16 100644
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -448,7 +448,7 @@ U32 get_volume_memory_size(const LLVolume* volume)
     U32 indices = 0;
     U32 vertices = 0;
 
-    for (U32 i = 0; i < volume->getNumVolumeFaces(); ++i)
+    for (S32 i = 0; i < volume->getNumVolumeFaces(); ++i)
     {
         const LLVolumeFace& face = volume->getVolumeFace(i);
         indices += face.mNumIndices;
@@ -916,7 +916,7 @@ void LLMeshRepoThread::run()
             // Dispatch all HttpHandler notifications
             mHttpRequest->update(0L);
         }
-        sRequestWaterLevel = mHttpRequestSet.size();            // Stats data update
+        sRequestWaterLevel = static_cast<S32>(mHttpRequestSet.size());            // Stats data update
 
         // NOTE: order of queue processing intentionally favors LOD requests over header requests
         // Todo: we are processing mLODReqQ, mHeaderReqQ, mSkinRequests, mDecompositionRequests and mPhysicsShapeRequests
@@ -1355,7 +1355,7 @@ bool LLMeshRepoThread::fetchMeshSkinInfo(const LLUUID& mesh_id, bool can_retry)
         {
             //check cache for mesh skin info
             LLFileSystem file(mesh_id, LLAssetType::AT_MESH);
-            if (file.getSize() >= offset+size)
+            if (file.getSize() >= offset + size)
             {
                 U8* buffer = new(std::nothrow) U8[size];
                 if (!buffer)
@@ -1372,7 +1372,7 @@ bool LLMeshRepoThread::fetchMeshSkinInfo(const LLUUID& mesh_id, bool can_retry)
                 bool zero = true;
                 for (S32 i = 0; i < llmin(size, 1024) && zero; ++i)
                 {
-                    zero = buffer[i] > 0 ? false : true;
+                    zero = buffer[i] == 0;
                 }
 
                 if (!zero)
@@ -1486,7 +1486,7 @@ bool LLMeshRepoThread::fetchMeshDecomposition(const LLUUID& mesh_id)
                 bool zero = true;
                 for (S32 i = 0; i < llmin(size, 1024) && zero; ++i)
                 {
-                    zero = buffer[i] > 0 ? false : true;
+                    zero = buffer[i] == 0;
                 }
 
                 if (!zero)
@@ -1584,7 +1584,7 @@ bool LLMeshRepoThread::fetchMeshPhysicsShape(const LLUUID& mesh_id)
                 bool zero = true;
                 for (S32 i = 0; i < llmin(size, 1024) && zero; ++i)
                 {
-                    zero = buffer[i] > 0 ? false : true;
+                    zero = buffer[i] == 0;
                 }
 
                 if (!zero)
@@ -1784,7 +1784,7 @@ bool LLMeshRepoThread::fetchMeshLOD(const LLVolumeParams& mesh_params, S32 lod,
                 bool zero = true;
                 for (S32 i = 0; i < llmin(size, 1024) && zero; ++i)
                 {
-                    zero = buffer[i] > 0 ? false : true;
+                    zero = buffer[i] == 0;
                 }
 
                 if (!zero)
@@ -2293,8 +2293,8 @@ void LLMeshUploadThread::wholeModelToLLSD(LLSD& dest, bool include_textures)
                 mUploadSkin,
                 mUploadJoints,
                 mLockScaleIfJointPosition,
-                FALSE,
-                FALSE,
+                false,
+                false,
                 data.mBaseModel->mSubmodelID);
 
             data.mAssetData = ostr.str();
@@ -2360,17 +2360,19 @@ void LLMeshUploadThread::wholeModelToLLSD(LLSD& dest, bool include_textures)
                 std::stringstream texture_str;
                 if (texture != NULL && include_textures && mUploadTextures)
                 {
-                    if(texture->hasSavedRawImage())
+                    if (texture->hasSavedRawImage())
                     {
+                        LLImageDataLock lock(texture->getSavedRawImage());
+
                         LLPointer<LLImageJ2C> upload_file =
                             LLViewerTextureList::convertToUploadFile(texture->getSavedRawImage());
 
                         if (!upload_file.isNull() && upload_file->getDataSize())
                         {
-                        texture_str.write((const char*) upload_file->getData(), upload_file->getDataSize());
+                            texture_str.write((const char*) upload_file->getData(), upload_file->getDataSize());
+                        }
                     }
                 }
-                }
 
                 if (texture != NULL &&
                     mUploadTextures &&
@@ -2448,8 +2450,8 @@ void LLMeshUploadThread::wholeModelToLLSD(LLSD& dest, bool include_textures)
                 mUploadSkin,
                 mUploadJoints,
                 mLockScaleIfJointPosition,
-                FALSE,
-                FALSE,
+                false,
+                false,
                 data.mBaseModel->mSubmodelID);
 
             data.mAssetData = ostr.str();
@@ -2514,17 +2516,19 @@ void LLMeshUploadThread::wholeModelToLLSD(LLSD& dest, bool include_textures)
                 std::stringstream texture_str;
                 if (texture != NULL && include_textures && mUploadTextures)
                 {
-                    if(texture->hasSavedRawImage())
+                    if (texture->hasSavedRawImage())
                     {
+                        LLImageDataLock lock(texture->getSavedRawImage());
+
                         LLPointer<LLImageJ2C> upload_file =
                             LLViewerTextureList::convertToUploadFile(texture->getSavedRawImage());
 
                         if (!upload_file.isNull() && upload_file->getDataSize())
                         {
-                        texture_str.write((const char*) upload_file->getData(), upload_file->getDataSize());
+                            texture_str.write((const char*) upload_file->getData(), upload_file->getDataSize());
+                        }
                     }
                 }
-                }
 
                 if (texture != NULL &&
                     mUploadTextures &&
@@ -3078,7 +3082,7 @@ void LLMeshHandlerBase::onCompleted(LLCore::HttpHandle handle, LLCore::HttpRespo
         LLCore::BufferArray * body(response->getBody());
         S32 body_offset(0);
         U8 * data(NULL);
-        S32 data_size(body ? body->size() : 0);
+        auto data_size(body ? body->size() : 0);
 
         if (data_size > 0)
         {
@@ -3139,7 +3143,7 @@ void LLMeshHandlerBase::onCompleted(LLCore::HttpHandle handle, LLCore::HttpRespo
             if (data)
             {
                 body->read(body_offset, (char *) data, data_size - body_offset);
-                LLMeshRepository::sBytesReceived += data_size;
+                LLMeshRepository::sBytesReceived += static_cast<U32>(data_size);
             }
             else
             {
@@ -3148,7 +3152,7 @@ void LLMeshHandlerBase::onCompleted(LLCore::HttpHandle handle, LLCore::HttpRespo
             }
         }
 
-        processData(body, body_offset, data, data_size - body_offset);
+        processData(body, body_offset, data, static_cast<S32>(data_size) - body_offset);
 
         delete [] data;
     }
@@ -3620,8 +3624,8 @@ S32 LLMeshRepository::update()
         return 0 ;
     }
 
-    S32 size = mUploadWaitList.size() ;
-    for (S32 i = 0; i < size; ++i)
+    auto size = mUploadWaitList.size() ;
+    for (size_t i = 0; i < size; ++i)
     {
         mUploads.push_back(mUploadWaitList[i]);
         mUploadWaitList[i]->preStart() ;
@@ -3629,7 +3633,7 @@ S32 LLMeshRepository::update()
     }
     mUploadWaitList.clear() ;
 
-    return size ;
+    return static_cast<S32>(size);
 }
 
 void LLMeshRepository::unregisterMesh(LLVOVolume* vobj)
@@ -4378,7 +4382,7 @@ void LLMeshUploadThread::decomposeMeshMatrix(LLMatrix4& transformation,
                                              LLVector3& result_scale)
 {
     // check for reflection
-    BOOL reflected = (transformation.determinant() < 0);
+    bool reflected = (transformation.determinant() < 0);
 
     // compute position
     LLVector3 position = LLVector3(0, 0, 0) * transformation;
@@ -4860,7 +4864,7 @@ void LLPhysicsDecomp::setMeshData(LLCDMeshData& mesh, bool vertex_based)
 {
     mesh.mVertexBase = mCurRequest->mPositions[0].mV;
     mesh.mVertexStrideBytes = 12;
-    mesh.mNumVertices = mCurRequest->mPositions.size();
+    mesh.mNumVertices = static_cast<int>(mCurRequest->mPositions.size());
 
     if(!vertex_based)
     {
@@ -4868,7 +4872,7 @@ void LLPhysicsDecomp::setMeshData(LLCDMeshData& mesh, bool vertex_based)
         mesh.mIndexBase = &(mCurRequest->mIndices[0]);
         mesh.mIndexStrideBytes = 6;
 
-        mesh.mNumTriangles = mCurRequest->mIndices.size()/3;
+        mesh.mNumTriangles = static_cast<int>(mCurRequest->mIndices.size())/3;
     }
 
     if ((vertex_based || mesh.mNumTriangles > 0) && mesh.mNumVertices > 2)
@@ -5199,16 +5203,16 @@ void LLPhysicsDecomp::Request::assignData(LLModel* mdl)
 {
     if (!mdl)
     {
-        return ;
+        return;
     }
 
     U16 index_offset = 0;
-    U16 tri[3] ;
+    U16 tri[3]{};
 
     mPositions.clear();
     mIndices.clear();
-    mBBox[1] = LLVector3(F32_MIN, F32_MIN, F32_MIN) ;
-    mBBox[0] = LLVector3(F32_MAX, F32_MAX, F32_MAX) ;
+    mBBox[1] = LLVector3(F32_MIN, F32_MIN, F32_MIN);
+    mBBox[0] = LLVector3(F32_MAX, F32_MAX, F32_MAX);
 
     //queue up vertex positions and indices
     for (S32 i = 0; i < mdl->getNumVolumeFaces(); ++i)
@@ -5219,36 +5223,34 @@ void LLPhysicsDecomp::Request::assignData(LLModel* mdl)
             continue;
         }
 
-        for (U32 j = 0; j < face.mNumVertices; ++j)
+        for (S32 j = 0; j < face.mNumVertices; ++j)
         {
             mPositions.push_back(LLVector3(face.mPositions[j].getF32ptr()));
-            for(U32 k = 0 ; k < 3 ; k++)
+            for (U32 k = 0 ; k < 3 ; k++)
             {
-                mBBox[0].mV[k] = llmin(mBBox[0].mV[k], mPositions[j].mV[k]) ;
-                mBBox[1].mV[k] = llmax(mBBox[1].mV[k], mPositions[j].mV[k]) ;
+                mBBox[0].mV[k] = llmin(mBBox[0].mV[k], mPositions[j].mV[k]);
+                mBBox[1].mV[k] = llmax(mBBox[1].mV[k], mPositions[j].mV[k]);
             }
         }
 
-        updateTriangleAreaThreshold() ;
+        updateTriangleAreaThreshold();
 
-        for (U32 j = 0; j+2 < face.mNumIndices; j += 3)
+        for (S32 j = 0; j+2 < face.mNumIndices; j += 3)
         {
             tri[0] = face.mIndices[j] + index_offset ;
-            tri[1] = face.mIndices[j + 1] + index_offset ;
-            tri[2] = face.mIndices[j + 2] + index_offset ;
+            tri[1] = face.mIndices[j + 1] + index_offset;
+            tri[2] = face.mIndices[j + 2] + index_offset;
 
-            if(isValidTriangle(tri[0], tri[1], tri[2]))
+            if (isValidTriangle(tri[0], tri[1], tri[2]))
             {
-                mIndices.push_back(tri[0]);
-                mIndices.push_back(tri[1]);
-                mIndices.push_back(tri[2]);
+                mIndices.emplace_back(tri[0]);
+                mIndices.emplace_back(tri[1]);
+                mIndices.emplace_back(tri[2]);
             }
         }
 
         index_offset += face.mNumVertices;
     }
-
-    return ;
 }
 
 void LLPhysicsDecomp::Request::updateTriangleAreaThreshold()
@@ -5279,10 +5281,10 @@ void LLMeshRepository::buildPhysicsMesh(LLModel::Decomposition& decomp)
 {
     decomp.mMesh.resize(decomp.mHull.size());
 
-    for (U32 i = 0; i < decomp.mHull.size(); ++i)
+    for (size_t i = 0; i < decomp.mHull.size(); ++i)
     {
         LLCDHull hull;
-        hull.mNumVertices = decomp.mHull[i].size();
+        hull.mNumVertices = static_cast<int>(decomp.mHull[i].size());
         hull.mVertexBase = decomp.mHull[i][0].mV;
         hull.mVertexStrideBytes = 12;
 
@@ -5301,7 +5303,7 @@ void LLMeshRepository::buildPhysicsMesh(LLModel::Decomposition& decomp)
     if (!decomp.mBaseHull.empty() && decomp.mBaseHullMesh.empty())
     { //get mesh for base hull
         LLCDHull hull;
-        hull.mNumVertices = decomp.mBaseHull.size();
+        hull.mNumVertices = static_cast<int>(decomp.mBaseHull.size());
         hull.mVertexBase = decomp.mBaseHull[0].mV;
         hull.mVertexStrideBytes = 12;
 
@@ -5493,7 +5495,7 @@ void on_new_single_inventory_upload_complete(
 
         // Show the preview panel for textures and sounds to let
         // user know that the image (or snapshot) arrived intact.
-        LLInventoryPanel* panel = LLInventoryPanel::getActiveInventoryPanel(FALSE);
+        LLInventoryPanel* panel = LLInventoryPanel::getActiveInventoryPanel(false);
         if (panel)
         {
 
diff --git a/indra/newview/llmeshrepository.h b/indra/newview/llmeshrepository.h
index b31d726004..b850ade0bb 100644
--- a/indra/newview/llmeshrepository.h
+++ b/indra/newview/llmeshrepository.h
@@ -533,13 +533,13 @@ public:
     // Inherited from LLCore::HttpHandler
     virtual void onCompleted(LLCore::HttpHandle handle, LLCore::HttpResponse * response);
 
-        LLViewerFetchedTexture* FindViewerTexture(const LLImportMaterial& material);
+    static LLViewerFetchedTexture* FindViewerTexture(const LLImportMaterial& material);
 
 private:
     LLHandle<LLWholeModelFeeObserver> mFeeObserverHandle;
     LLHandle<LLWholeModelUploadObserver> mUploadObserverHandle;
 
-    bool mDoUpload; // if FALSE only model data will be requested, otherwise the model will be uploaded
+    bool mDoUpload; // if false only model data will be requested, otherwise the model will be uploaded
     LLSD mModelData;
 
     // llcorehttp library interface objects.
diff --git a/indra/newview/llmimetypes.cpp b/indra/newview/llmimetypes.cpp
index 33d7ec2fc0..ee10b38a9d 100644
--- a/indra/newview/llmimetypes.cpp
+++ b/indra/newview/llmimetypes.cpp
@@ -131,15 +131,15 @@ bool LLMIMETypes::parseMIMETypes(const std::string& xml_filename)
                 }
                 if (child->hasName("allow_resize"))
                 {
-                    BOOL allow_resize = FALSE;
+                    bool allow_resize = false;
                     child->getBoolValue( 1, &allow_resize );
-                    info.mAllowResize = (bool)allow_resize;
+                    info.mAllowResize = allow_resize;
                 }
                 if (child->hasName("allow_looping"))
                 {
-                    BOOL allow_looping = FALSE;
+                    bool allow_looping = false;
                     child->getBoolValue( 1, &allow_looping );
-                    info.mAllowLooping = (bool)allow_looping;
+                    info.mAllowLooping = allow_looping;
                 }
             }
             sWidgetMap[set_name] = info;
diff --git a/indra/newview/llmimetypes.h b/indra/newview/llmimetypes.h
index c38ed18871..4c30eed98e 100644
--- a/indra/newview/llmimetypes.h
+++ b/indra/newview/llmimetypes.h
@@ -105,10 +105,10 @@ public:
         std::string mPlayTip;
             // custom tool tip to display for Play button
 
-        BOOL mAllowResize;
+        bool mAllowResize;
             // enable/disable media size edit fields
 
-        BOOL mAllowLooping;
+        bool mAllowLooping;
             // enable/disable media looping checkbox
     };
     typedef std::map< std::string, LLMIMEInfo > mime_info_map_t;
diff --git a/indra/newview/llmodelpreview.cpp b/indra/newview/llmodelpreview.cpp
index 26f1206c85..9af9f7fd53 100644
--- a/indra/newview/llmodelpreview.cpp
+++ b/indra/newview/llmodelpreview.cpp
@@ -68,6 +68,8 @@
 #include "lltabcontainer.h"
 #include "lltextbox.h"
 
+#include <filesystem>
+
 #include <boost/algorithm/string.hpp>
 
 bool LLModelPreview::sIgnoreLoadedCallback = false;
@@ -93,7 +95,7 @@ const F32 SKIN_WEIGHT_CAMERA_DISTANCE = 16.f;
 
 LLViewerFetchedTexture* bindMaterialDiffuseTexture(const LLImportMaterial& material)
 {
-    LLViewerFetchedTexture *texture = LLViewerTextureManager::getFetchedTexture(material.getDiffuseMap(), FTT_DEFAULT, TRUE, LLGLTexture::BOOST_PREVIEW);
+    LLViewerFetchedTexture *texture = LLViewerTextureManager::getFetchedTexture(material.getDiffuseMap(), FTT_DEFAULT, true, LLGLTexture::BOOST_PREVIEW);
 
     if (texture)
     {
@@ -151,7 +153,7 @@ void FindModel(LLModelLoader::scene& scene, const std::string& name_to_match, LL
 //-----------------------------------------------------------------------------
 
 LLModelPreview::LLModelPreview(S32 width, S32 height, LLFloater* fmp)
-    : LLViewerDynamicTexture(width, height, 3, ORDER_MIDDLE, FALSE), LLMutex()
+    : LLViewerDynamicTexture(width, height, 3, ORDER_MIDDLE, false), LLMutex()
     , mLodsQuery()
     , mLodsWithParsingError()
     , mPelvisZOffset(0.0f)
@@ -165,7 +167,7 @@ LLModelPreview::LLModelPreview(S32 width, S32 height, LLFloater* fmp)
     , mHasDegenerate(false)
     , mImporterDebug(LLCachedControl<bool>(gSavedSettings, "ImporterDebug", false))
 {
-    mNeedsUpdate = TRUE;
+    mNeedsUpdate = true;
     mCameraDistance = 0.f;
     mCameraYaw = 0.f;
     mCameraPitch = 0.f;
@@ -293,7 +295,7 @@ void LLModelPreview::rebuildUploadData()
 
     F32 max_scale = 0.f;
 
-    BOOL legacyMatching = gSavedSettings.getBOOL("ImporterLegacyMatching");
+    bool legacyMatching = gSavedSettings.getBOOL("ImporterLegacyMatching");
     U32 load_state = 0;
 
     for (auto iter = mBaseScene.begin(); iter != mBaseScene.end(); ++iter)
@@ -536,6 +538,32 @@ void LLModelPreview::rebuildUploadData()
             }
             instance.mTransform = mat;
             mUploadData.push_back(instance);
+
+            // if uploading textures, make sure textures are present
+            if (mFMP->childGetValue("upload_textures").asBoolean()) // too early to cheack if still loading
+            {
+                for (auto& mat_pair : instance.mMaterial)
+                {
+                    LLImportMaterial& material = mat_pair.second;
+
+                    if (material.mDiffuseMapFilename.size())
+                    {
+                        LLViewerFetchedTexture* texture = LLMeshUploadThread::FindViewerTexture(material);
+                        if (texture && texture->isMissingAsset())
+                        {
+                            // in case user provided a missing file later
+                            texture->setIsMissingAsset(false);
+                            texture->setLoadedCallback(LLModelPreview::textureLoadedCallback, 0, true, false, this, NULL, false);
+                            texture->forceToSaveRawImage(0, F32_MAX);
+                            texture->updateFetch();
+                            if (mModelLoader)
+                            {
+                                mModelLoader->mNumOfFetchingTextures++;
+                            }
+                        }
+                    }
+                }
+            }
         }
     }
 
@@ -662,7 +690,7 @@ void LLModelPreview::saveUploadData(const std::string& filename,
                 save_skinweights,
                 save_joint_positions,
                 lock_scale_if_joint_position,
-                FALSE, TRUE, instance.mModel->mSubmodelID);
+                false, true, instance.mModel->mSubmodelID);
 
             data["mesh"][instance.mModel->mLocalID] = str.str();
         }
@@ -1062,6 +1090,29 @@ void LLModelPreview::loadModelCallback(S32 loaded_lod)
     { //only replace given LoD
         mModel[loaded_lod] = mModelLoader->mModelList;
         mScene[loaded_lod] = mModelLoader->mScene;
+
+        // Duplicate the model if it is an internal bounding box model
+        if (loaded_lod == LLModel::LOD_PHYSICS &&
+            mBaseModel.size() > 1 && // This makes sense for multiple models only
+            mModelLoader->mModelList.size() == 1 && // Just on the off-chance
+            mModelLoader->mScene.size() == 1 &&     // Just on the off-chance
+            std::filesystem::path(mModelLoader->mFilename).filename() == "cube.dae")
+        {
+            // Create a copy of the just loaded model for each model in mBaseModel
+            const LLModel* origin = mModelLoader->mModelList.front();
+            const LLModelInstance& mi = mModelLoader->mScene.begin()->second.front();
+            for (U32 i = 1; i < mBaseModel.size(); ++i)
+            {
+                LLPointer<LLModel> copy(new LLModel(origin->getParams(), origin->getDetail()));
+                copy->mLabel = origin->mLabel;
+                copy->copyVolumeFaces(origin);
+                copy->mPosition = origin->mPosition;
+                copy->mMaterialList = origin->mMaterialList;
+                mModel[loaded_lod].push_back(copy);
+                mScene[loaded_lod][mi.mTransform].push_back(LLModelInstance(copy, copy->mLabel, mi.mTransform, mi.mMaterial));
+            }
+        }
+
         mVertexBuffer[loaded_lod].clear();
 
         setPreviewLOD(loaded_lod);
@@ -1088,18 +1139,18 @@ void LLModelPreview::loadModelCallback(S32 loaded_lod)
                 mDefaultPhysicsShapeP = out_model;
                 mWarnOfUnmatchedPhyicsMeshes = true;
             }
-            BOOL legacyMatching = gSavedSettings.getBOOL("ImporterLegacyMatching");
+            bool legacyMatching = gSavedSettings.getBOOL("ImporterLegacyMatching");
             if (!legacyMatching)
             {
                 if (!mBaseModel.empty())
                 {
-                    BOOL name_based = FALSE;
-                    BOOL has_submodels = FALSE;
+                    bool name_based = false;
+                    bool has_submodels = false;
                     for (U32 idx = 0; idx < mBaseModel.size(); ++idx)
                     {
                         if (mBaseModel[idx]->mSubmodelID)
                         { // don't do index-based renaming when the base model has submodels
-                            has_submodels = TRUE;
+                            has_submodels = true;
                             if (mImporterDebug)
                             {
                                 std::ostringstream out;
@@ -1120,12 +1171,12 @@ void LLModelPreview::loadModelCallback(S32 loaded_lod)
                         FindModel(mBaseScene, loaded_name, found_model, transform);
                         if (found_model)
                         { // don't rename correctly named models (even if they are placed in a wrong order)
-                            name_based = TRUE;
+                            name_based = true;
                         }
 
                         if (mModel[loaded_lod][idx]->mSubmodelID)
                         { // don't rename the models when loaded LOD model has submodels
-                            has_submodels = TRUE;
+                            has_submodels = true;
                         }
                     }
 
@@ -1159,6 +1210,17 @@ void LLModelPreview::loadModelCallback(S32 loaded_lod)
                                     LLFloaterModelPreview::addStringToLog(out, false);
                                 }
                                 mModel[loaded_lod][idx]->mLabel = name;
+                                // Rename the correspondent instance as well
+                                [&]()
+                                {
+                                    for (auto& p : mScene[loaded_lod])
+                                        for (auto& i : p.second)
+                                            if (i.mModel == mModel[loaded_lod][idx])
+                                            {
+                                                i.mLabel = name;
+                                                return;
+                                            }
+                                }();
                             }
                         }
                     }
@@ -1323,7 +1385,7 @@ F32 LLModelPreview::genMeshOptimizerPerModel(LLModel *base_model, LLModel *targe
     S32 size_indices = 0;
     S32 size_vertices = 0;
 
-    for (U32 face_idx = 0; face_idx < base_model->getNumVolumeFaces(); ++face_idx)
+    for (S32 face_idx = 0; face_idx < base_model->getNumVolumeFaces(); ++face_idx)
     {
         const LLVolumeFace &face = base_model->getVolumeFace(face_idx);
         size_indices += face.mNumIndices;
@@ -1349,7 +1411,7 @@ F32 LLModelPreview::genMeshOptimizerPerModel(LLModel *base_model, LLModel *targe
     S32 combined_positions_shift = 0;
     S32 indices_idx_shift = 0;
     S32 combined_indices_shift = 0;
-    for (U32 face_idx = 0; face_idx < base_model->getNumVolumeFaces(); ++face_idx)
+    for (S32 face_idx = 0; face_idx < base_model->getNumVolumeFaces(); ++face_idx)
     {
         const LLVolumeFace &face = base_model->getVolumeFace(face_idx);
 
@@ -1474,7 +1536,7 @@ F32 LLModelPreview::genMeshOptimizerPerModel(LLModel *base_model, LLModel *targe
     S32 valid_faces = 0;
 
     // Crude method to copy indices back into face
-    for (U32 face_idx = 0; face_idx < base_model->getNumVolumeFaces(); ++face_idx)
+    for (S32 face_idx = 0; face_idx < base_model->getNumVolumeFaces(); ++face_idx)
     {
         const LLVolumeFace &face = base_model->getVolumeFace(face_idx);
 
@@ -1492,7 +1554,7 @@ F32 LLModelPreview::genMeshOptimizerPerModel(LLModel *base_model, LLModel *targe
         // Copy relevant indices and vertices
         for (S32 i = 0; i < size_new_indices; ++i)
         {
-            U32 idx = output_indices[i];
+            S32 idx = (S32)output_indices[i];
 
             if ((i % 3) == 0)
             {
@@ -1521,7 +1583,7 @@ F32 LLModelPreview::genMeshOptimizerPerModel(LLModel *base_model, LLModel *targe
                         // U16 vertices overflow shouldn't happen, but just in case
                         size_new_indices = 0;
                         valid_faces = 0;
-                        for (U32 face_idx = 0; face_idx < base_model->getNumVolumeFaces(); ++face_idx)
+                        for (S32 face_idx = 0; face_idx < base_model->getNumVolumeFaces(); ++face_idx)
                         {
                             genMeshOptimizerPerFace(base_model, target_model, face_idx, indices_decimator, error_threshold, simplification_mode);
                             const LLVolumeFace &face = target_model->getVolumeFace(face_idx);
@@ -1867,7 +1929,7 @@ void LLModelPreview::genMeshOptimizerLODs(S32 which_lod, S32 meshopt_mode, U32 d
             LLModel* target_model = mModel[lod][mdl_idx];
 
             // carry over normalized transform into simplified model
-            for (int i = 0; i < base->getNumVolumeFaces(); ++i)
+            for (S32 i = 0; i < base->getNumVolumeFaces(); ++i)
             {
                 LLVolumeFace& src = base->getVolumeFace(i);
                 LLVolumeFace& dst = target_model->getVolumeFace(i);
@@ -1881,7 +1943,7 @@ void LLModelPreview::genMeshOptimizerLODs(S32 which_lod, S32 meshopt_mode, U32 d
             if (model_meshopt_mode == MESH_OPTIMIZER_PRECISE)
             {
                 // Run meshoptimizer for each face
-                for (U32 face_idx = 0; face_idx < base->getNumVolumeFaces(); ++face_idx)
+                for (S32 face_idx = 0; face_idx < base->getNumVolumeFaces(); ++face_idx)
                 {
                     F32 res = genMeshOptimizerPerFace(base, target_model, face_idx, indices_decimator, lod_error_threshold, MESH_OPTIMIZER_FULL);
                     if (res < 0)
@@ -1897,7 +1959,7 @@ void LLModelPreview::genMeshOptimizerLODs(S32 which_lod, S32 meshopt_mode, U32 d
             if (model_meshopt_mode == MESH_OPTIMIZER_SLOPPY)
             {
                 // Run meshoptimizer for each face
-                for (U32 face_idx = 0; face_idx < base->getNumVolumeFaces(); ++face_idx)
+                for (S32 face_idx = 0; face_idx < base->getNumVolumeFaces(); ++face_idx)
                 {
                     if (genMeshOptimizerPerFace(base, target_model, face_idx, indices_decimator, lod_error_threshold, MESH_OPTIMIZER_NO_TOPOLOGY) < 0)
                     {
@@ -2244,7 +2306,7 @@ void LLModelPreview::updateStatusMessages()
     mModelNoErrors = true;
 
     const U32 lod_high = LLModel::LOD_HIGH;
-    U32 high_submodel_count = mModel[lod_high].size() - countRootModels(mModel[lod_high]);
+    U32 high_submodel_count = static_cast<U32>(mModel[lod_high].size()) - countRootModels(mModel[lod_high]);
 
     for (S32 lod = 0; lod <= lod_high; ++lod)
     {
@@ -2341,7 +2403,7 @@ void LLModelPreview::updateStatusMessages()
 
 
     //warn if hulls have more than 256 points in them
-    BOOL physExceededVertexLimit = FALSE;
+    bool physExceededVertexLimit = false;
     for (U32 i = 0; mModelNoErrors && i < mModel[LLModel::LOD_PHYSICS].size(); ++i)
     {
         LLModel* mdl = mModel[LLModel::LOD_PHYSICS][i];
@@ -2352,7 +2414,7 @@ void LLModelPreview::updateStatusMessages()
             {
                 if (mdl->mPhysics.mHull[j].size() > 256)
                 {
-                    physExceededVertexLimit = TRUE;
+                    physExceededVertexLimit = true;
                     LL_INFOS() << "Physical model " << mdl->mLabel << " exceeds vertex per hull limitations." << LL_ENDL;
                     break;
                 }
@@ -2447,10 +2509,10 @@ void LLModelPreview::updateStatusMessages()
 
                 if (!decomp.empty())
                 {
-                    phys_hulls += decomp.size();
+                    phys_hulls += static_cast<S32>(decomp.size());
                     for (U32 i = 0; i < decomp.size(); ++i)
                     {
-                        phys_points += decomp[i].size();
+                        phys_points += static_cast<S32>(decomp[i].size());
                     }
                 }
                 else
@@ -3075,8 +3137,8 @@ U32 LLModelPreview::loadTextures(LLImportMaterial& material, void* opaque)
         material.mOpaqueData = new LLPointer< LLViewerFetchedTexture >;
         LLPointer< LLViewerFetchedTexture >& tex = (*reinterpret_cast< LLPointer< LLViewerFetchedTexture > * >(material.mOpaqueData));
 
-        tex = LLViewerTextureManager::getFetchedTextureFromUrl("file://" + LLURI::unescape(material.mDiffuseMapFilename), FTT_LOCAL_FILE, TRUE, LLGLTexture::BOOST_PREVIEW);
-        tex->setLoadedCallback(LLModelPreview::textureLoadedCallback, 0, TRUE, FALSE, opaque, NULL, FALSE);
+        tex = LLViewerTextureManager::getFetchedTextureFromUrl("file://" + LLURI::unescape(material.mDiffuseMapFilename), FTT_LOCAL_FILE, true, LLGLTexture::BOOST_PREVIEW);
+        tex->setLoadedCallback(LLModelPreview::textureLoadedCallback, 0, true, false, opaque, NULL, false);
         tex->forceToSaveRawImage(0, F32_MAX);
         material.setDiffuseMap(tex->getID()); // record tex ID
         return 1;
@@ -3128,12 +3190,12 @@ void LLModelPreview::addEmptyFace(LLModel* pTarget)
 //-----------------------------------------------------------------------------
 // Todo: we shouldn't be setting all those UI elements on render.
 // Note: Render happens each frame with skinned avatars
-BOOL LLModelPreview::render()
+bool LLModelPreview::render()
 {
     assert_main_thread();
 
     LLMutexLock lock(this);
-    mNeedsUpdate = FALSE;
+    mNeedsUpdate = false;
 
     bool show_edges = mViewOption["show_edges"];
     bool show_joint_overrides = mViewOption["show_joint_overrides"];
@@ -3344,7 +3406,7 @@ BOOL LLModelPreview::render()
 
     z_near = llclamp(z_far * 0.001f, 0.001f, 0.1f);
 
-    LLViewerCamera::getInstance()->setPerspective(FALSE, mOrigin.mX, mOrigin.mY, width, height, FALSE, z_near, z_far);
+    LLViewerCamera::getInstance()->setPerspective(false, mOrigin.mX, mOrigin.mY, width, height, false, z_near, z_far);
 
     stop_glerror();
 
@@ -3373,7 +3435,7 @@ BOOL LLModelPreview::render()
             else
             {
                 LL_INFOS() << "Vertex Buffer[" << mPreviewLOD << "]" << " is EMPTY!!!" << LL_ENDL;
-                regen = TRUE;
+                regen = true;
             }
         }
 
@@ -3406,12 +3468,12 @@ BOOL LLModelPreview::render()
 
                 gGL.multMatrix((GLfloat*)mat.mMatrix);
 
-                U32 num_models = mVertexBuffer[mPreviewLOD][model].size();
-                for (U32 i = 0; i < num_models; ++i)
+                auto num_models = mVertexBuffer[mPreviewLOD][model].size();
+                for (size_t i = 0; i < num_models; ++i)
                 {
                     if (show_textures)
                     {
-                        int materialCnt = instance.mModel->mMaterialList.size();
+                        auto materialCnt = instance.mModel->mMaterialList.size();
                         if (i < materialCnt)
                         {
                             const std::string& binding = instance.mModel->mMaterialList[i];
@@ -3559,10 +3621,9 @@ BOOL LLModelPreview::render()
 
                         if (render_mesh)
                         {
-                            U32 num_models = mVertexBuffer[LLModel::LOD_PHYSICS][model].size();
-                            if (pass > 0)
-                            {
-                                for (U32 i = 0; i < num_models; ++i)
+                            auto num_models = mVertexBuffer[LLModel::LOD_PHYSICS][model].size();
+                            if (pass > 0){
+                                for (size_t i = 0; i < num_models; ++i)
                                 {
                                     gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
                                     gGL.diffuseColor4fv(PREVIEW_PSYH_FILL_COL.mV);
@@ -3633,8 +3694,8 @@ BOOL LLModelPreview::render()
 
                                 if (physics.mHull.empty())
                                 {
-                                    U32 num_models = mVertexBuffer[LLModel::LOD_PHYSICS][model].size();
-                                    for (U32 v = 0; v < num_models; ++v)
+                                    auto num_models = mVertexBuffer[LLModel::LOD_PHYSICS][model].size();
+                                    for (size_t v = 0; v < num_models; ++v)
                                     {
                                         // Zero this variable for an obligatory buffer initialization
                                         // See https://github.com/secondlife/viewer/issues/912
@@ -3704,7 +3765,7 @@ BOOL LLModelPreview::render()
                         const LLMeshSkinInfo *skin = &model->mSkinInfo;
                         LLSkinningUtil::initJointNums(&model->mSkinInfo, getPreviewAvatar());// inits skin->mJointNums if nessesary
                         U32 joint_count = LLSkinningUtil::getMeshJointCount(skin);
-                        U32 bind_count = skin->mAlternateBindMatrix.size();
+                        auto bind_count = skin->mAlternateBindMatrix.size();
 
                         if (show_joint_overrides
                             && bind_count > 0
@@ -3749,8 +3810,7 @@ BOOL LLModelPreview::render()
                             }
                         }
 
-                        std::size_t size = mVertexBuffer[mPreviewLOD][model].size();
-                        for (U32 i = 0; i < size; ++i)
+                        for (U32 i = 0, e = static_cast<U32>(mVertexBuffer[mPreviewLOD][model].size()); i < e; ++i)
                         {
                             model->mSkinInfo.updateHash();
                             LLRenderPass::uploadMatrixPalette(mPreviewAvatar, &model->mSkinInfo);
@@ -3759,7 +3819,7 @@ BOOL LLModelPreview::render()
 
                             if (show_textures)
                             {
-                                int materialCnt = instance.mModel->mMaterialList.size();
+                                auto materialCnt = instance.mModel->mMaterialList.size();
                                 if (i < materialCnt)
                                 {
                                     const std::string& binding = instance.mModel->mMaterialList[i];
@@ -3842,7 +3902,7 @@ BOOL LLModelPreview::render()
 
     gGL.popMatrix();
 
-    return TRUE;
+    return true;
 }
 
 void LLModelPreview::renderGroundPlane(float z_offset)
@@ -3872,7 +3932,7 @@ void LLModelPreview::renderGroundPlane(float z_offset)
 //-----------------------------------------------------------------------------
 void LLModelPreview::refresh()
 {
-    mNeedsUpdate = TRUE;
+    mNeedsUpdate = true;
 }
 
 //-----------------------------------------------------------------------------
@@ -3941,12 +4001,12 @@ void LLModelPreview::setPreviewLOD(S32 lod)
 
 //static
 void LLModelPreview::textureLoadedCallback(
-    BOOL success,
+    bool success,
     LLViewerFetchedTexture *src_vi,
     LLImageRaw* src,
     LLImageRaw* src_aux,
     S32 discard_level,
-    BOOL final,
+    bool final,
     void* userdata)
 {
     LLModelPreview* preview = (LLModelPreview*)userdata;
diff --git a/indra/newview/llmodelpreview.h b/indra/newview/llmodelpreview.h
index 4fc72788a9..c615070105 100644
--- a/indra/newview/llmodelpreview.h
+++ b/indra/newview/llmodelpreview.h
@@ -147,7 +147,7 @@ public:
     void setTexture(U32 name) { mTextureName = name; }
 
     void setPhysicsFromLOD(S32 lod);
-    BOOL render();
+    bool render();
     void update();
     void genBuffers(S32 lod, bool skinned);
     void clearBuffers();
@@ -155,7 +155,7 @@ public:
     void rotate(F32 yaw_radians, F32 pitch_radians);
     void zoom(F32 zoom_amt);
     void pan(F32 right, F32 up);
-    virtual BOOL needsRender() { return mNeedsUpdate; }
+    virtual bool needsRender() { return mNeedsUpdate; }
     void setPreviewLOD(S32 lod);
     void clearModel(S32 lod);
     void getJointAliases(JointMap& joint_map);
@@ -190,7 +190,7 @@ public:
     U32 getLegacyRigFlags() const { return mLegacyRigFlags; }
     void setLegacyRigFlags(U32 rigFlags) { mLegacyRigFlags = rigFlags; }
 
-    static void textureLoadedCallback(BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* src_aux, S32 discard_level, BOOL final, void* userdata);
+    static void textureLoadedCallback(bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* src_aux, S32 discard_level, bool final, void* userdata);
     static bool lodQueryCallback();
 
     boost::signals2::connection setDetailsCallback(const details_signal_t::slot_type& cb){ return mDetailsSignal.connect(cb); }
@@ -266,7 +266,7 @@ protected:
 
     LLFloater*  mFMP;
 
-    BOOL        mNeedsUpdate;
+    bool        mNeedsUpdate;
     bool        mDirty;
     bool        mGenLOD;
     U32         mTextureName;
diff --git a/indra/newview/llmorphview.cpp b/indra/newview/llmorphview.cpp
index 95c55f8a0c..a5fc813f2f 100644
--- a/indra/newview/llmorphview.cpp
+++ b/indra/newview/llmorphview.cpp
@@ -47,7 +47,7 @@
 
 LLMorphView *gMorphView = NULL;
 
-const F32 MORPH_NEAR_CLIP = 0.1f;
+constexpr F32 MORPH_NEAR_CLIP = 0.1f;
 
 //-----------------------------------------------------------------------------
 // LLMorphView()
@@ -60,7 +60,7 @@ LLMorphView::LLMorphView(const LLMorphView::Params& p)
     mOldCameraNearClip( 0.f ),
     mCameraPitch( 0.f ),
     mCameraYaw( 0.f ),
-    mCameraDrivenByKeys( FALSE )
+    mCameraDrivenByKeys( false )
 {}
 
 //-----------------------------------------------------------------------------
@@ -103,7 +103,7 @@ void    LLMorphView::shutdown()
 //-----------------------------------------------------------------------------
 // setVisible()
 //-----------------------------------------------------------------------------
-void LLMorphView::setVisible(BOOL visible)
+void LLMorphView::setVisible(bool visible)
 {
     if( visible != getVisible() )
     {
@@ -152,7 +152,7 @@ void LLMorphView::updateCamera()
     gAgentCamera.setCameraPosAndFocusGlobal( camera_pos, target_pos, gAgent.getID() );
 }
 
-void LLMorphView::setCameraDrivenByKeys(BOOL b)
+void LLMorphView::setCameraDrivenByKeys(bool b)
 {
     if( mCameraDrivenByKeys != b )
     {
diff --git a/indra/newview/llmorphview.h b/indra/newview/llmorphview.h
index f3af581a85..87f8c25f65 100644
--- a/indra/newview/llmorphview.h
+++ b/indra/newview/llmorphview.h
@@ -49,7 +49,7 @@ public:
     void        shutdown();
 
     // inherited methods
-    /*virtual*/ void    setVisible(BOOL visible);
+    void        setVisible(bool visible) override;
 
     void        setCameraTargetJoint(LLJoint *joint)        {mCameraTargetJoint = joint;}
     LLJoint*    getCameraTargetJoint()                      {return mCameraTargetJoint;}
@@ -58,7 +58,7 @@ public:
     void        setCameraTargetOffset(const LLVector3d& camera_target_offset) {mCameraTargetOffset = camera_target_offset;}
 
     void        updateCamera();
-    void        setCameraDrivenByKeys( BOOL b );
+    void        setCameraDrivenByKeys( bool b );
 
 protected:
     void        initialize();
@@ -75,7 +75,7 @@ protected:
     F32         mCameraPitch;
     F32         mCameraYaw;
 
-    BOOL        mCameraDrivenByKeys;
+    bool        mCameraDrivenByKeys;
 };
 
 //
diff --git a/indra/newview/llmoveview.cpp b/indra/newview/llmoveview.cpp
index 640c7ef766..a8ceaffde8 100644
--- a/indra/newview/llmoveview.cpp
+++ b/indra/newview/llmoveview.cpp
@@ -80,7 +80,7 @@ LLFloaterMove::LLFloaterMove(const LLSD& key)
 LLFloaterMove::~LLFloaterMove()
 {
     // Ensure LLPanelStandStopFlying panel is not among floater's children. See EXT-8458.
-    setVisible(FALSE);
+    setVisible(false);
 
     // Otherwise it can be destroyed and static pointer in LLPanelStandStopFlying::getInstance() will become invalid.
     // Such situation was possible when LLFloaterReg returns "dead" instance of floater.
@@ -88,7 +88,7 @@ LLFloaterMove::~LLFloaterMove()
 }
 
 // virtual
-BOOL LLFloaterMove::postBuild()
+bool LLFloaterMove::postBuild()
 {
     updateTransparency(TT_ACTIVE); // force using active floater transparency (STORM-730)
 
@@ -142,12 +142,12 @@ BOOL LLFloaterMove::postBuild()
 
     gAgent.addParcelChangedCallback(LLFloaterMove::sUpdateFlyingStatus);
 
-    return TRUE;
+    return true;
 }
 
 // *NOTE: we assume that setVisible() is called on floater close.
 // virtual
-void LLFloaterMove::setVisible(BOOL visible)
+void LLFloaterMove::setVisible(bool visible)
 {
     // Do nothing with Stand/Stop Flying panel in excessive calls of this method.
     if (getVisible() == visible)
@@ -190,7 +190,7 @@ F32 LLFloaterMove::getYawRate( F32 time )
 
 
 // static
-void LLFloaterMove::setFlyingMode(BOOL fly)
+void LLFloaterMove::setFlyingMode(bool fly)
 {
     LLFloaterMove* instance = LLFloaterReg::findTypedInstance<LLFloaterMove>("moveview");
     if (instance)
@@ -222,7 +222,7 @@ void LLFloaterMove::setAlwaysRunMode(bool run)
     }
 }
 
-void LLFloaterMove::setFlyingModeImpl(BOOL fly)
+void LLFloaterMove::setFlyingModeImpl(bool fly)
 {
     updateButtonsWithMovementMode(fly ? MM_FLY : (gAgent.getAlwaysRun() ? MM_RUN : MM_WALK));
 }
@@ -236,7 +236,7 @@ void LLFloaterMove::setAlwaysRunModeImpl(bool run)
 }
 
 //static
-void LLFloaterMove::setSittingMode(BOOL bSitting)
+void LLFloaterMove::setSittingMode(bool bSitting)
 {
     if (bSitting)
     {
@@ -310,7 +310,7 @@ void LLFloaterMove::setMovementMode(const EMovementMode mode)
     }
     else
     {
-        gAgent.setFlying(FALSE);
+        gAgent.setFlying(false);
     }
 
     // attempts to set avatar flying can not set it real flying in some cases.
@@ -451,7 +451,7 @@ void LLFloaterMove::sUpdateFlyingStatus()
 
 }
 
-void LLFloaterMove::showModeButtons(BOOL bShow)
+void LLFloaterMove::showModeButtons(bool bShow)
 {
     if (mModeActionsPanel->getVisible() == bShow)
         return;
@@ -466,7 +466,7 @@ void LLFloaterMove::enableInstance()
     {
         if (gAgent.getFlying())
         {
-            instance->showModeButtons(FALSE);
+            instance->showModeButtons(false);
         }
         else
         {
@@ -479,14 +479,14 @@ void LLFloaterMove::onOpen(const LLSD& key)
 {
     if (gAgent.getFlying())
     {
-        setFlyingMode(TRUE);
-        showModeButtons(FALSE);
+        setFlyingMode(true);
+        showModeButtons(false);
     }
 
     if (isAgentAvatarValid() && gAgentAvatarp->isSitting())
     {
-        setSittingMode(TRUE);
-        showModeButtons(FALSE);
+        setSittingMode(true);
+        showModeButtons(false);
     }
 
     sUpdateFlyingStatus();
@@ -499,10 +499,10 @@ void LLFloaterMove::setModeButtonToggleState(const EMovementMode mode)
     mode_control_button_map_t::const_iterator it = mModeControlButtonMap.begin();
     for (; it != mModeControlButtonMap.end(); ++it)
     {
-        it->second->setToggleState(FALSE);
+        it->second->setToggleState(false);
     }
 
-    mModeControlButtonMap[mode]->setToggleState(TRUE);
+    mModeControlButtonMap[mode]->setToggleState(true);
 }
 
 
@@ -542,7 +542,7 @@ void LLPanelStandStopFlying::setStandStopFlyingMode(EStandStopFlyingMode mode)
     panel->mStopFlyingButton->setVisible(SSFM_STOP_FLYING == mode);
 
     //visibility of it should be updated after updating visibility of the buttons
-    panel->setVisible(TRUE);
+    panel->setVisible(true);
 }
 
 //static
@@ -551,10 +551,10 @@ void LLPanelStandStopFlying::clearStandStopFlyingMode(EStandStopFlyingMode mode)
     LLPanelStandStopFlying* panel = getInstance();
     switch(mode) {
     case SSFM_STAND:
-        panel->mStandButton->setVisible(FALSE);
+        panel->mStandButton->setVisible(false);
         break;
     case SSFM_STOP_FLYING:
-        panel->mStopFlyingButton->setVisible(FALSE);
+        panel->mStopFlyingButton->setVisible(false);
         break;
     default:
         LL_ERRS() << "Unexpected EStandStopFlyingMode is passed: " << mode << LL_ENDL;
@@ -562,26 +562,26 @@ void LLPanelStandStopFlying::clearStandStopFlyingMode(EStandStopFlyingMode mode)
 
 }
 
-BOOL LLPanelStandStopFlying::postBuild()
+bool LLPanelStandStopFlying::postBuild()
 {
     mStandButton = getChild<LLButton>("stand_btn");
     mStandButton->setCommitCallback(boost::bind(&LLPanelStandStopFlying::onStandButtonClick, this));
     mStandButton->setCommitCallback(boost::bind(&LLFloaterMove::enableInstance));
-    mStandButton->setVisible(FALSE);
+    mStandButton->setVisible(false);
     LLHints::getInstance()->registerHintTarget("stand_btn", mStandButton->getHandle());
 
     mStopFlyingButton = getChild<LLButton>("stop_fly_btn");
-    //mStopFlyingButton->setCommitCallback(boost::bind(&LLFloaterMove::setFlyingMode, FALSE));
+    //mStopFlyingButton->setCommitCallback(boost::bind(&LLFloaterMove::setFlyingMode, false));
     mStopFlyingButton->setCommitCallback(boost::bind(&LLPanelStandStopFlying::onStopFlyingButtonClick, this));
-    mStopFlyingButton->setVisible(FALSE);
+    mStopFlyingButton->setVisible(false);
 
     gViewerWindow->setOnWorldViewRectUpdated(boost::bind(&LLPanelStandStopFlying::updatePosition, this));
 
-    return TRUE;
+    return true;
 }
 
 //virtual
-void LLPanelStandStopFlying::setVisible(BOOL visible)
+void LLPanelStandStopFlying::setVisible(bool visible)
 {
     //we dont need to show the panel if these buttons are not activated
     if (gAgentCamera.getCameraMode() == CAMERA_MODE_MOUSELOOK) visible = false;
@@ -603,7 +603,7 @@ void LLPanelStandStopFlying::setVisible(BOOL visible)
     LLPanel::setVisible(visible);
 }
 
-BOOL LLPanelStandStopFlying::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLPanelStandStopFlying::handleToolTip(S32 x, S32 y, MASK mask)
 {
     LLToolTipMgr::instance().unblockToolTips();
 
@@ -671,7 +671,7 @@ LLPanelStandStopFlying* LLPanelStandStopFlying::getStandStopFlyingPanel()
     LLPanelStandStopFlying* panel = new LLPanelStandStopFlying();
     panel->buildFromFile("panel_stand_stop_flying.xml");
 
-    panel->setVisible(FALSE);
+    panel->setVisible(false);
     //LLUI::getInstance()->getRootView()->addChild(panel);
 
     LL_INFOS() << "Build LLPanelStandStopFlying panel" << LL_ENDL;
@@ -687,14 +687,14 @@ void LLPanelStandStopFlying::onStandButtonClick()
     LLSelectMgr::getInstance()->deselectAllForStandingUp();
     gAgent.setControlFlags(AGENT_CONTROL_STAND_UP);
 
-    setFocus(FALSE);
+    setFocus(false);
 }
 
 void LLPanelStandStopFlying::onStopFlyingButtonClick()
 {
-    gAgent.setFlying(FALSE);
+    gAgent.setFlying(false);
 
-    setFocus(FALSE); // EXT-482
+    setFocus(false); // EXT-482
 }
 
 /**
diff --git a/indra/newview/llmoveview.h b/indra/newview/llmoveview.h
index 642e6a41be..3690245e1d 100644
--- a/indra/newview/llmoveview.h
+++ b/indra/newview/llmoveview.h
@@ -48,14 +48,14 @@ private:
     ~LLFloaterMove();
 public:
 
-    /*virtual*/ BOOL    postBuild();
-    /*virtual*/ void    setVisible(BOOL visible);
+    /*virtual*/ bool    postBuild();
+    /*virtual*/ void    setVisible(bool visible);
     static F32  getYawRate(F32 time);
-    static void setFlyingMode(BOOL fly);
-    void setFlyingModeImpl(BOOL fly);
+    static void setFlyingMode(bool fly);
+    void setFlyingModeImpl(bool fly);
     static void setAlwaysRunMode(bool run);
     void setAlwaysRunModeImpl(bool run);
-    static void setSittingMode(BOOL bSitting);
+    static void setSittingMode(bool bSitting);
     static void enableInstance();
     /*virtual*/ void onOpen(const LLSD& key);
 
@@ -86,7 +86,7 @@ private:
     void initModeButtonMap();
     void setModeButtonToggleState(const EMovementMode mode);
     void updateButtonsWithMovementMode(const EMovementMode newMode);
-    void showModeButtons(BOOL bShow);
+    void showModeButtons(bool bShow);
 
 public:
 
@@ -141,13 +141,13 @@ public:
     static LLPanelStandStopFlying* getInstance();
     static void setStandStopFlyingMode(EStandStopFlyingMode mode);
     static void clearStandStopFlyingMode(EStandStopFlyingMode mode);
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void setVisible(BOOL visible);
+    /*virtual*/ bool postBuild();
+    /*virtual*/ void setVisible(bool visible);
 
     // *HACK: due to hard enough to have this control aligned with "Move" button while resizing
     // let update its position in each frame
     /*virtual*/ void draw(){updatePosition(); LLPanel::draw();}
-    /*virtual*/ BOOL handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleToolTip(S32 x, S32 y, MASK mask);
 
 
 protected:
diff --git a/indra/newview/llmutelist.cpp b/indra/newview/llmutelist.cpp
index 6c0ba06032..2d51acc063 100644
--- a/indra/newview/llmutelist.cpp
+++ b/indra/newview/llmutelist.cpp
@@ -154,7 +154,7 @@ std::string LLMute::getDisplayType() const
 // LLMuteList()
 //-----------------------------------------------------------------------------
 LLMuteList::LLMuteList() :
-    mIsLoaded(FALSE)
+    mIsLoaded(false)
 {
     gGenericDispatcher.addHandler("emptymutelist", &sDispatchEmptyMuteList);
 
@@ -227,7 +227,7 @@ static LLVOAvatar* find_avatar(const LLUUID& id)
     }
 }
 
-BOOL LLMuteList::add(const LLMute& mute, U32 flags)
+bool LLMuteList::add(const LLMute& mute, U32 flags)
 {
     // Can't mute text from Lindens
     if ((mute.mType == LLMute::AGENT)
@@ -235,7 +235,7 @@ BOOL LLMuteList::add(const LLMute& mute, U32 flags)
     {
         LL_WARNS() << "Trying to mute a Linden; ignored" << LL_ENDL;
         LLNotifications::instance().add("MuteLinden", LLSD(), LLSD());
-        return FALSE;
+        return false;
     }
 
     // Can't mute self.
@@ -243,7 +243,7 @@ BOOL LLMuteList::add(const LLMute& mute, U32 flags)
         && mute.mID == gAgent.getID())
     {
         LL_WARNS() << "Trying to self; ignored" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     static LLCachedControl<S32> mute_list_limit(gSavedSettings, "MuteListLimit", 1000);
@@ -253,7 +253,7 @@ BOOL LLMuteList::add(const LLMute& mute, U32 flags)
         LLSD args;
         args["MUTE_LIMIT"] = mute_list_limit;
         LLNotifications::instance().add(LLNotification::Params("MuteLimitReached").substitutions(args));
-        return FALSE;
+        return false;
     }
 
     if (mute.mType == LLMute::BY_NAME)
@@ -262,14 +262,14 @@ BOOL LLMuteList::add(const LLMute& mute, U32 flags)
         if (mute.mName.empty())
         {
             LL_WARNS() << "Trying to mute empty string by-name" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         // Null mutes must have uuid null
         if (mute.mID.notNull())
         {
             LL_WARNS() << "Trying to add by-name mute with non-null id" << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         std::pair<string_set_t::iterator, bool> result = mLegacyMutes.insert(mute.mName);
@@ -279,13 +279,13 @@ BOOL LLMuteList::add(const LLMute& mute, U32 flags)
             updateAdd(mute);
             notifyObservers();
             notifyObserversDetailed(mute);
-            return TRUE;
+            return true;
         }
         else
         {
             LL_INFOS() << "duplicate mute ignored" << LL_ENDL;
             // was duplicate
-            return FALSE;
+            return false;
         }
     }
     else
@@ -341,13 +341,13 @@ BOOL LLMuteList::add(const LLMute& mute, U32 flags)
                 {
                     LLNotifications::instance().cancelByOwner(localmute.mID);
                 }
-                return TRUE;
+                return true;
             }
         }
     }
 
     // If we were going to return success, we'd have done it by now.
-    return FALSE;
+    return false;
 }
 
 void LLMuteList::updateAdd(const LLMute& mute)
@@ -375,13 +375,13 @@ void LLMuteList::updateAdd(const LLMute& mute)
     {
         LL_WARNS() << "Added elements to non-initialized block list" << LL_ENDL;
     }
-    mIsLoaded = TRUE; // why is this here? -MG
+    mIsLoaded = true; // why is this here? -MG
 }
 
 
-BOOL LLMuteList::remove(const LLMute& mute, U32 flags)
+bool LLMuteList::remove(const LLMute& mute, U32 flags)
 {
-    BOOL found = FALSE;
+    bool found = false;
 
     // First, remove from main list.
     mute_set_t::iterator it = mMutes.find(mute);
@@ -505,14 +505,14 @@ void notify_automute_callback(const LLUUID& agent_id, const LLAvatarName& full_n
 }
 
 
-BOOL LLMuteList::autoRemove(const LLUUID& agent_id, const EAutoReason reason)
+bool LLMuteList::autoRemove(const LLUUID& agent_id, const EAutoReason reason)
 {
-    BOOL removed = FALSE;
+    bool removed = false;
 
     if (isMuted(agent_id))
     {
         LLMute automute(agent_id, LLStringUtil::null, LLMute::AGENT);
-        removed = TRUE;
+        removed = true;
         remove(automute);
 
         LLAvatarName av_name;
@@ -559,19 +559,19 @@ std::vector<LLMute> LLMuteList::getMutes() const
 //-----------------------------------------------------------------------------
 // loadFromFile()
 //-----------------------------------------------------------------------------
-BOOL LLMuteList::loadFromFile(const std::string& filename)
+bool LLMuteList::loadFromFile(const std::string& filename)
 {
     if(!filename.size())
     {
         LL_WARNS() << "Mute List Filename is Empty!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     LLFILE* fp = LLFile::fopen(filename, "rb");     /*Flawfinder: ignore*/
     if (!fp)
     {
         LL_WARNS() << "Couldn't open mute list " << filename << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // *NOTE: Changing the size of these buffers will require changes
@@ -616,25 +616,25 @@ BOOL LLMuteList::loadFromFile(const std::string& filename)
     }
     mPendingAgentNameUpdates.clear();
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
 // saveToFile()
 //-----------------------------------------------------------------------------
-BOOL LLMuteList::saveToFile(const std::string& filename)
+bool LLMuteList::saveToFile(const std::string& filename)
 {
     if(!filename.size())
     {
         LL_WARNS() << "Mute List Filename is Empty!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     LLFILE* fp = LLFile::fopen(filename, "wb");     /*Flawfinder: ignore*/
     if (!fp)
     {
         LL_WARNS() << "Couldn't open mute list " << filename << LL_ENDL;
-        return FALSE;
+        return false;
     }
     // legacy mutes have null uuid
     std::string id_string;
@@ -659,11 +659,11 @@ BOOL LLMuteList::saveToFile(const std::string& filename)
         }
     }
     fclose(fp);
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLMuteList::isMuted(const LLUUID& id, const std::string& name, U32 flags) const
+bool LLMuteList::isMuted(const LLUUID& id, const std::string& name, U32 flags) const
 {
     // for objects, check for muting on their parent prim
     LLViewerObject* mute_object = get_object_to_mute_from_id(id);
@@ -677,21 +677,21 @@ BOOL LLMuteList::isMuted(const LLUUID& id, const std::string& name, U32 flags) c
         // If any of the flags the caller passed are set, this item isn't considered muted for this caller.
         if(flags & mute_it->mFlags)
         {
-            return FALSE;
+            return false;
         }
-        return TRUE;
+        return true;
     }
 
     // empty names can't be legacy-muted
     bool avatar = mute_object && mute_object->isAvatar();
-    if (name.empty() || avatar) return FALSE;
+    if (name.empty() || avatar) return false;
 
     // Look in legacy pile
     string_set_t::const_iterator legacy_it = mLegacyMutes.find(name);
     return legacy_it != mLegacyMutes.end();
 }
 
-BOOL LLMuteList::isMuted(const std::string& username, U32 flags) const
+bool LLMuteList::isMuted(const std::string& username, U32 flags) const
 {
     mute_set_t::const_iterator mute_iter = mMutes.begin();
     while(mute_iter != mMutes.end())
@@ -700,11 +700,11 @@ BOOL LLMuteList::isMuted(const std::string& username, U32 flags) const
         if (mute_iter->mType == LLMute::AGENT
             && LLCacheName::buildUsername(mute_iter->mName) == username)
         {
-            return TRUE;
+            return true;
         }
         mute_iter++;
     }
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
@@ -739,7 +739,7 @@ void LLMuteList::requestFromServer(const LLUUID& agent_id)
     }
     // Double amount of retries due to this request happening during busy stage
     // Ideally this should be turned into a capability
-    gMessageSystem->sendReliable(gAgent.getRegionHost(), LL_DEFAULT_RELIABLE_RETRIES * 2, TRUE, LL_PING_BASED_TIMEOUT_DUMMY, NULL, NULL);
+    gMessageSystem->sendReliable(gAgent.getRegionHost(), LL_DEFAULT_RELIABLE_RETRIES * 2, true, LL_PING_BASED_TIMEOUT_DUMMY, NULL, NULL);
 }
 
 //-----------------------------------------------------------------------------
@@ -782,7 +782,7 @@ void LLMuteList::processMuteListUpdate(LLMessageSystem* msg, void**)
                               filename,
                               LL_PATH_CACHE,
                               msg->getSender(),
-                              TRUE, // make the remote file temporary.
+                              true, // make the remote file temporary.
                               onFileMuteList,
                               (void**)local_filename_and_path,
                               LLXferManager::HIGH_PRIORITY);
@@ -866,7 +866,7 @@ void LLMuteList::removeObserver(LLMuteListObserver* observer)
 
 void LLMuteList::setLoaded()
 {
-    mIsLoaded = TRUE;
+    mIsLoaded = true;
     notifyObservers();
 }
 
diff --git a/indra/newview/llmutelist.h b/indra/newview/llmutelist.h
index fc47e507c3..13d579c61f 100644
--- a/indra/newview/llmutelist.h
+++ b/indra/newview/llmutelist.h
@@ -89,25 +89,25 @@ public:
     void removeObserver(LLMuteListObserver* observer);
 
     // Add either a normal or a BY_NAME mute, for any or all properties.
-    BOOL add(const LLMute& mute, U32 flags = 0);
+    bool add(const LLMute& mute, U32 flags = 0);
 
     // Remove both normal and legacy mutes, for any or all properties.
-    BOOL remove(const LLMute& mute, U32 flags = 0);
-    BOOL autoRemove(const LLUUID& agent_id, const EAutoReason reason);
+    bool remove(const LLMute& mute, U32 flags = 0);
+    bool autoRemove(const LLUUID& agent_id, const EAutoReason reason);
 
     // Name is required to test against legacy text-only mutes.
-    BOOL isMuted(const LLUUID& id, const std::string& name = LLStringUtil::null, U32 flags = 0) const;
+    bool isMuted(const LLUUID& id, const std::string& name = LLStringUtil::null, U32 flags = 0) const;
 
     // Workaround for username-based mute search, a lot of string conversions so use cautiously
     // Expects lower case username
-    BOOL isMuted(const std::string& username, U32 flags = 0) const;
+    bool isMuted(const std::string& username, U32 flags = 0) const;
 
     // Alternate (convenience) form for places we don't need to pass the name, but do need flags
-    BOOL isMuted(const LLUUID& id, U32 flags) const { return isMuted(id, LLStringUtil::null, flags); };
+    bool isMuted(const LLUUID& id, U32 flags) const { return isMuted(id, LLStringUtil::null, flags); };
 
     static bool isLinden(const std::string& name);
 
-    BOOL isLoaded() const { return mIsLoaded; }
+    bool isLoaded() const { return mIsLoaded; }
 
     std::vector<LLMute> getMutes() const;
 
@@ -118,8 +118,8 @@ public:
     void cache(const LLUUID& agent_id);
 
 private:
-    BOOL loadFromFile(const std::string& filename);
-    BOOL saveToFile(const std::string& filename);
+    bool loadFromFile(const std::string& filename);
+    bool saveToFile(const std::string& filename);
 
     void setLoaded();
     void notifyObservers();
@@ -167,7 +167,7 @@ private:
     typedef std::set<LLMuteListObserver*> observer_set_t;
     observer_set_t mObservers;
 
-    BOOL mIsLoaded;
+    bool mIsLoaded;
 
     friend class LLDispatchEmptyMuteList;
 };
diff --git a/indra/newview/llnamebox.cpp b/indra/newview/llnamebox.cpp
index ba4fcbb3cb..0e88fa7461 100644
--- a/indra/newview/llnamebox.cpp
+++ b/indra/newview/llnamebox.cpp
@@ -59,12 +59,12 @@ LLNameBox::~LLNameBox()
     LLNameBox::sInstances.erase(this);
 }
 
-void LLNameBox::setNameID(const LLUUID& name_id, BOOL is_group)
+void LLNameBox::setNameID(const LLUUID& name_id, bool is_group)
 {
     mNameID = name_id;
 
     std::string name;
-    BOOL got_name = FALSE;
+    bool got_name = false;
 
     if (!is_group)
     {
@@ -105,7 +105,7 @@ void LLNameBox::refreshAll(const LLUUID& id, const std::string& full_name, bool
     }
 }
 
-void LLNameBox::setName(const std::string& name, BOOL is_group)
+void LLNameBox::setName(const std::string& name, bool is_group)
 {
     if (mLink)
     {
diff --git a/indra/newview/llnamebox.h b/indra/newview/llnamebox.h
index d98d26d755..336ef8551a 100644
--- a/indra/newview/llnamebox.h
+++ b/indra/newview/llnamebox.h
@@ -51,7 +51,7 @@ public:
 
     virtual ~LLNameBox();
 
-    void setNameID(const LLUUID& name_id, BOOL is_group);
+    void setNameID(const LLUUID& name_id, bool is_group);
 
     void refresh(const LLUUID& id, const std::string& full_name, bool is_group);
 
@@ -62,13 +62,13 @@ protected:
 
     friend class LLUICtrlFactory;
 private:
-    void setName(const std::string& name, BOOL is_group);
+    void setName(const std::string& name, bool is_group);
 
     static std::set<LLNameBox*> sInstances;
 
 private:
     LLUUID mNameID;
-    BOOL mLink;
+    bool mLink;
     std::string mInitialValue;
 
 };
diff --git a/indra/newview/llnameeditor.cpp b/indra/newview/llnameeditor.cpp
index b9dcc98a28..4b5e3bd53e 100644
--- a/indra/newview/llnameeditor.cpp
+++ b/indra/newview/llnameeditor.cpp
@@ -58,7 +58,7 @@ LLNameEditor::~LLNameEditor()
     LLNameEditor::sInstances.erase(this);
 }
 
-void LLNameEditor::setNameID(const LLUUID& name_id, BOOL is_group)
+void LLNameEditor::setNameID(const LLUUID& name_id, bool is_group)
 {
     mNameID = name_id;
 
@@ -100,7 +100,7 @@ void LLNameEditor::refreshAll(const LLUUID& id, const std::string& full_name, bo
 
 void LLNameEditor::setValue( const LLSD& value )
 {
-    setNameID(value.asUUID(), FALSE);
+    setNameID(value.asUUID(), false);
 }
 
 LLSD LLNameEditor::getValue() const
diff --git a/indra/newview/llnameeditor.h b/indra/newview/llnameeditor.h
index 84dd347008..efa2da9fd8 100644
--- a/indra/newview/llnameeditor.h
+++ b/indra/newview/llnameeditor.h
@@ -57,7 +57,7 @@ protected:
 public:
     virtual ~LLNameEditor();
 
-    void setNameID(const LLUUID& name_id, BOOL is_group);
+    void setNameID(const LLUUID& name_id, bool is_group);
 
     void refresh(const LLUUID& id, const std::string& full_name, bool is_group);
 
diff --git a/indra/newview/llnamelistctrl.cpp b/indra/newview/llnamelistctrl.cpp
index dc0f5f89fd..d7ffcb6e25 100644
--- a/indra/newview/llnamelistctrl.cpp
+++ b/indra/newview/llnamelistctrl.cpp
@@ -45,7 +45,7 @@
 
 static LLDefaultChildRegistry::Register<LLNameListCtrl> r("name_list");
 
-static const S32 info_icon_size = 16;
+static constexpr S32 info_icon_size = 16;
 
 void LLNameListCtrl::NameTypeNames::declareValues()
 {
@@ -74,7 +74,7 @@ LLNameListCtrl::LLNameListCtrl(const LLNameListCtrl::Params& p)
 
 // public
 LLScrollListItem* LLNameListCtrl::addNameItem(const LLUUID& agent_id, EAddPosition pos,
-                                 BOOL enabled, const std::string& suffix, const std::string& prefix)
+                                 bool enabled, const std::string& suffix, const std::string& prefix)
 {
     //LL_INFOS() << "LLNameListCtrl::addNameItem " << agent_id << LL_ENDL;
 
@@ -87,19 +87,19 @@ LLScrollListItem* LLNameListCtrl::addNameItem(const LLUUID& agent_id, EAddPositi
 }
 
 // virtual, public
-BOOL LLNameListCtrl::handleDragAndDrop(
+bool LLNameListCtrl::handleDragAndDrop(
         S32 x, S32 y, MASK mask,
-        BOOL drop,
+        bool drop,
         EDragAndDropType cargo_type, void *cargo_data,
         EAcceptance *accept,
         std::string& tooltip_msg)
 {
     if (!mAllowCallingCardDrop)
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (cargo_type == DAD_CALLINGCARD)
     {
@@ -128,7 +128,7 @@ BOOL LLNameListCtrl::handleDragAndDrop(
         }
     }
 
-    handled = TRUE;
+    handled = true;
     LL_DEBUGS("UserInput") << "dragAndDrop handled by LLNameListCtrl " << getName() << LL_ENDL;
 
     return handled;
@@ -216,9 +216,9 @@ void    LLNameListCtrl::mouseOverHighlightNthItem( S32 target_index )
 }
 
 //virtual
-BOOL LLNameListCtrl::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLNameListCtrl::handleToolTip(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     S32 column_index = getColumnIndexFromOffset(x);
     LLNameListItem* hit_item = dynamic_cast<LLNameListItem*>(hitItem(x, y));
     LLFloater* floater = gFloaterView->getParentFloater(this);
@@ -268,7 +268,7 @@ BOOL LLNameListCtrl::handleToolTip(S32 x, S32 y, MASK mask)
                     params.sticky_rect(sticky_rect);
 
                     LLToolTipMgr::getInstance()->show(params);
-                    handled = TRUE;
+                    handled = true;
                 }
             }
         }
@@ -281,7 +281,7 @@ BOOL LLNameListCtrl::handleToolTip(S32 x, S32 y, MASK mask)
 }
 
 // virtual
-BOOL LLNameListCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLNameListCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     LLNameListItem* hit_item = dynamic_cast<LLNameListItem*>(hitItem(x, y));
     LLFloater* floater = gFloaterView->getParentFloater(this);
@@ -291,7 +291,7 @@ BOOL LLNameListCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
         {
             ContextMenuType prev_menu = getContextMenuType();
             setContextMenu(MENU_GROUP);
-            BOOL handled = LLScrollListCtrl::handleRightMouseDown(x, y, mask);
+            bool handled = LLScrollListCtrl::handleRightMouseDown(x, y, mask);
             setContextMenu(prev_menu);
             return handled;
         }
@@ -301,7 +301,7 @@ BOOL LLNameListCtrl::handleRightMouseDown(S32 x, S32 y, MASK mask)
 
 // public
 void LLNameListCtrl::addGroupNameItem(const LLUUID& group_id, EAddPosition pos,
-                                      BOOL enabled)
+                                      bool enabled)
 {
     NameItem item;
     item.value = group_id;
@@ -438,7 +438,7 @@ LLScrollListItem* LLNameListCtrl::addNameItemRow(
     LLScrollListColumn* columnp = getColumn(mNameColumnIndex);
     if (columnp && columnp->mHeader)
     {
-        columnp->mHeader->setHasResizableElement(TRUE);
+        columnp->mHeader->setHasResizableElement(true);
     }
 
     return item;
@@ -496,7 +496,7 @@ void LLNameListCtrl::selectItemBySpecialId(const LLUUID& special_id)
         LLNameListItem* item = dynamic_cast<LLNameListItem*>(*it);
         if (item && item->getSpecialID() == special_id)
         {
-            item->setSelected(TRUE);
+            item->setSelected(true);
             break;
         }
     }
@@ -616,7 +616,7 @@ void LLNameListCtrl::updateColumns(bool force_update)
     }
 }
 
-void LLNameListCtrl::sortByName(BOOL ascending)
+void LLNameListCtrl::sortByName(bool ascending)
 {
     sortByColumnIndex(mNameColumnIndex,ascending);
 }
diff --git a/indra/newview/llnamelistctrl.h b/indra/newview/llnamelistctrl.h
index 111b8d1077..dde85f4d29 100644
--- a/indra/newview/llnamelistctrl.h
+++ b/indra/newview/llnamelistctrl.h
@@ -144,7 +144,7 @@ public:
     // Add a user to the list by name.  It will be added, the name
     // requested from the cache, and updated as necessary.
     LLScrollListItem* addNameItem(const LLUUID& agent_id, EAddPosition pos = ADD_BOTTOM,
-                     BOOL enabled = TRUE, const std::string& suffix = LLStringUtil::null, const std::string& prefix = LLStringUtil::null);
+                     bool enabled = true, const std::string& suffix = LLStringUtil::null, const std::string& prefix = LLStringUtil::null);
     LLScrollListItem* addNameItem(NameItem& item, EAddPosition pos = ADD_BOTTOM);
 
     /*virtual*/ LLScrollListItem* addElement(const LLSD& element, EAddPosition pos = ADD_BOTTOM, void* userdata = NULL);
@@ -154,7 +154,7 @@ public:
     // Add a user to the list by name.  It will be added, the name
     // requested from the cache, and updated as necessary.
     void addGroupNameItem(const LLUUID& group_id, EAddPosition pos = ADD_BOTTOM,
-                          BOOL enabled = TRUE);
+                          bool enabled = true);
     void addGroupNameItem(NameItem& item, EAddPosition pos = ADD_BOTTOM);
 
 
@@ -166,21 +166,21 @@ public:
     LLUUID getSelectedSpecialId();
 
     // LLView interface
-    /*virtual*/ BOOL    handleDragAndDrop(S32 x, S32 y, MASK mask,
-                                      BOOL drop, EDragAndDropType cargo_type, void *cargo_data,
+    /*virtual*/ bool    handleDragAndDrop(S32 x, S32 y, MASK mask,
+                                      bool drop, EDragAndDropType cargo_type, void *cargo_data,
                                       EAcceptance *accept,
                                       std::string& tooltip_msg);
-    /*virtual*/ BOOL handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleToolTip(S32 x, S32 y, MASK mask);
 
-    void setAllowCallingCardDrop(BOOL b) { mAllowCallingCardDrop = b; }
+    void setAllowCallingCardDrop(bool b) { mAllowCallingCardDrop = b; }
 
-    void sortByName(BOOL ascending);
+    void sortByName(bool ascending);
 
     /*virtual*/ void updateColumns(bool force_update);
 
     /*virtual*/ void mouseOverHighlightNthItem( S32 index );
 
-    /*virtual*/ BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleRightMouseDown(S32 x, S32 y, MASK mask);
 
     bool isSpecialType() { return (mNameListType == SPECIAL); }
 
@@ -195,7 +195,7 @@ private:
 private:
     S32             mNameColumnIndex;
     std::string     mNameColumn;
-    BOOL            mAllowCallingCardDrop;
+    bool            mAllowCallingCardDrop;
     bool            mShortNames;  // display name only, no SLID
     typedef std::map<LLUUID, boost::signals2::connection> avatar_name_cache_connection_map_t;
     avatar_name_cache_connection_map_t mAvatarNameCacheConnections;
diff --git a/indra/newview/llnavigationbar.cpp b/indra/newview/llnavigationbar.cpp
index dd496c3bf9..da5bc4b05d 100644
--- a/indra/newview/llnavigationbar.cpp
+++ b/indra/newview/llnavigationbar.cpp
@@ -170,12 +170,12 @@ void LLTeleportHistoryMenuItem::draw()
 
 void LLTeleportHistoryMenuItem::onMouseEnter(S32 x, S32 y, MASK mask)
 {
-    mArrowIcon->setVisible(TRUE);
+    mArrowIcon->setVisible(true);
 }
 
 void LLTeleportHistoryMenuItem::onMouseLeave(S32 x, S32 y, MASK mask)
 {
-    mArrowIcon->setVisible(FALSE);
+    mArrowIcon->setVisible(false);
 }
 
 static LLDefaultChildRegistry::Register<LLPullButton> menu_button("pull_button");
@@ -213,9 +213,9 @@ void LLPullButton::onMouseLeave(S32 x, S32 y, MASK mask)
 }
 
 /*virtual*/
-BOOL LLPullButton::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLPullButton::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLButton::handleMouseDown(x, y, mask);
+    bool handled = LLButton::handleMouseDown(x, y, mask);
     if (handled)
     {
         //if mouse down was handled by button,
@@ -226,7 +226,7 @@ BOOL LLPullButton::handleMouseDown(S32 x, S32 y, MASK mask)
 }
 
 /*virtual*/
-BOOL LLPullButton::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLPullButton::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     // reset data to get ready for next circle
     mLastMouseDown.clear();
@@ -286,7 +286,7 @@ LLNavigationBar::~LLNavigationBar()
     mTeleportFailedConnection.disconnect();
 }
 
-BOOL LLNavigationBar::postBuild()
+bool LLNavigationBar::postBuild()
 {
     mBtnBack    = getChild<LLPullButton>("back_btn");
     mBtnForward = getChild<LLPullButton>("forward_btn");
@@ -295,12 +295,12 @@ BOOL LLNavigationBar::postBuild()
 
     mCmbLocation= getChild<LLLocationInputCtrl>("location_combo");
 
-    mBtnBack->setEnabled(FALSE);
+    mBtnBack->setEnabled(false);
     mBtnBack->setClickedCallback(boost::bind(&LLNavigationBar::onBackButtonClicked, this));
     mBtnBack->setHeldDownCallback(boost::bind(&LLNavigationBar::onBackOrForwardButtonHeldDown, this,_1, _2));
     mBtnBack->setClickDraggingCallback(boost::bind(&LLNavigationBar::showTeleportHistoryMenu, this,_1));
 
-    mBtnForward->setEnabled(FALSE);
+    mBtnForward->setEnabled(false);
     mBtnForward->setClickedCallback(boost::bind(&LLNavigationBar::onForwardButtonClicked, this));
     mBtnForward->setHeldDownCallback(boost::bind(&LLNavigationBar::onBackOrForwardButtonHeldDown, this, _1, _2));
     mBtnForward->setClickDraggingCallback(boost::bind(&LLNavigationBar::showTeleportHistoryMenu, this,_1));
@@ -331,10 +331,10 @@ BOOL LLNavigationBar::postBuild()
     mNavigationPanel->getResizeBar()->setResizeListener(boost::bind(&LLNavigationBar::onNavbarResized, this));
     mFavoritePanel->getResizeBar()->setResizeListener(boost::bind(&LLNavigationBar::onNavbarResized, this));
 
-    return TRUE;
+    return true;
 }
 
-void LLNavigationBar::setVisible(BOOL visible)
+void LLNavigationBar::setVisible(bool visible)
 {
     // change visibility of grandparent layout_panel to animate in and out
     if (getParent())
@@ -360,9 +360,9 @@ void LLNavigationBar::draw()
     LLPanel::draw();
 }
 
-BOOL LLNavigationBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLNavigationBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = childrenHandleRightMouseDown( x, y, mask) != NULL;
+    bool handled = childrenHandleRightMouseDown( x, y, mask) != NULL;
     if(!handled && !gMenuHolder->hasVisibleMenu())
     {
         show_navbar_context_menu(this,x,y);
@@ -459,7 +459,7 @@ void LLNavigationBar::onLocationSelection()
             {
                 LLInventoryModel::item_array_t landmark_items =
                         LLLandmarkActions::fetchLandmarksByName(typed_location,
-                                FALSE);
+                                false);
                 if (!landmark_items.empty())
                 {
                     gAgent.teleportViaLandmark( landmark_items[0]->getAssetUUID());
diff --git a/indra/newview/llnavigationbar.h b/indra/newview/llnavigationbar.h
index 56af1c134f..2bb6af24bc 100755
--- a/indra/newview/llnavigationbar.h
+++ b/indra/newview/llnavigationbar.h
@@ -60,9 +60,9 @@ public:
         }
     };
 
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
 
-    /*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseUp(S32 x, S32 y, MASK mask);
 
     /*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask);
 
@@ -93,9 +93,9 @@ class LLNavigationBar
 public:
 
     /*virtual*/ void    draw() override;
-    /*virtual*/ BOOL handleRightMouseDown(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL    postBuild() override;
-    /*virtual*/ void    setVisible(BOOL visible) override;
+    /*virtual*/ bool handleRightMouseDown(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool    postBuild() override;
+    /*virtual*/ void    setVisible(bool visible) override;
 
     void handleLoginComplete();
     void clearHistoryCache();
@@ -138,7 +138,7 @@ private:
     {
         if (LLNavigationBar::instanceExists())
         {
-            LLNavigationBar::getInstance()->setEnabled(FALSE);
+            LLNavigationBar::getInstance()->setEnabled(false);
         }
     }
 
diff --git a/indra/newview/llnetmap.cpp b/indra/newview/llnetmap.cpp
index d8ac641e56..1410232a0f 100644
--- a/indra/newview/llnetmap.cpp
+++ b/indra/newview/llnetmap.cpp
@@ -69,20 +69,20 @@
 
 static LLDefaultChildRegistry::Register<LLNetMap> r1("net_map");
 
-const F32 LLNetMap::MAP_SCALE_MIN = 32;
-const F32 LLNetMap::MAP_SCALE_FAR = 32;
-const F32 LLNetMap::MAP_SCALE_MEDIUM = 128;
-const F32 LLNetMap::MAP_SCALE_CLOSE = 256;
-const F32 LLNetMap::MAP_SCALE_VERY_CLOSE = 1024;
-const F32 LLNetMap::MAP_SCALE_MAX = 4096;
+constexpr F32 LLNetMap::MAP_SCALE_MIN = 32;
+constexpr F32 LLNetMap::MAP_SCALE_FAR = 32;
+constexpr F32 LLNetMap::MAP_SCALE_MEDIUM = 128;
+constexpr F32 LLNetMap::MAP_SCALE_CLOSE = 256;
+constexpr F32 LLNetMap::MAP_SCALE_VERY_CLOSE = 1024;
+constexpr F32 LLNetMap::MAP_SCALE_MAX = 4096;
 
-const F32 MAP_SCALE_ZOOM_FACTOR = 1.04f; // Zoom in factor per click of scroll wheel (4%)
-const F32 MIN_DOT_RADIUS = 3.5f;
-const F32 DOT_SCALE = 0.75f;
-const F32 MIN_PICK_SCALE = 2.f;
-const S32 MOUSE_DRAG_SLOP = 2;      // How far the mouse needs to move before we think it's a drag
+constexpr F32 MAP_SCALE_ZOOM_FACTOR = 1.04f; // Zoom in factor per click of scroll wheel (4%)
+constexpr F32 MIN_DOT_RADIUS = 3.5f;
+constexpr F32 DOT_SCALE = 0.75f;
+constexpr F32 MIN_PICK_SCALE = 2.f;
+constexpr S32 MOUSE_DRAG_SLOP = 2;      // How far the mouse needs to move before we think it's a drag
 
-const F64 COARSEUPDATE_MAX_Z = 1020.0f;
+constexpr F64 COARSEUPDATE_MAX_Z = 1020.0f;
 
 LLNetMap::LLNetMap (const Params & p)
 :   LLUICtrl (p),
@@ -126,7 +126,7 @@ LLNetMap::~LLNetMap()
     }
 }
 
-BOOL LLNetMap::postBuild()
+bool LLNetMap::postBuild()
 {
     LLUICtrl::CommitCallbackRegistry::ScopedRegistrar commitRegistrar;
     LLUICtrl::EnableCallbackRegistry::ScopedRegistrar enableRegistrar;
@@ -142,7 +142,7 @@ BOOL LLNetMap::postBuild()
     LLMenuGL* menu = LLUICtrlFactory::getInstance()->createFromFile<LLMenuGL>("menu_mini_map.xml", gMenuHolder, LLViewerMenuHolderGL::child_registry_t::instance());
     mPopupMenuHandle = menu->getHandle();
     menu->setItemEnabled("Re-center map", false);
-    return TRUE;
+    return true;
 }
 
 void LLNetMap::setScale( F32 scale )
@@ -345,6 +345,7 @@ void LLNetMap::draw()
             mObjectImageCenterGlobal = viewPosToGlobal(llfloor(new_center.mV[VX]), llfloor(new_center.mV[VY]));
 
             // Create the base texture.
+            LLImageDataLock lock(mObjectRawImagep);
             U8 *default_texture = mObjectRawImagep->getData();
             memset( default_texture, 0, mObjectImagep->getWidth() * mObjectImagep->getHeight() * mObjectImagep->getComponents() );
 
@@ -543,7 +544,7 @@ void LLNetMap::draw()
     LLUICtrl::draw();
 }
 
-void LLNetMap::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLNetMap::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLUICtrl::reshape(width, height, called_from_parent);
     createObjectImage();
@@ -576,7 +577,7 @@ LLVector3 LLNetMap::globalPosToView(const LLVector3d& global_pos)
 }
 
 void LLNetMap::drawTracking(const LLVector3d& pos_global, const LLColor4& color,
-                            BOOL draw_arrow )
+                            bool draw_arrow )
 {
     LLVector3 pos_local = globalPosToView(pos_global);
     if( (pos_local.mV[VX] < 0) ||
@@ -687,7 +688,7 @@ LLVector3d LLNetMap::viewPosToGlobal( S32 x, S32 y )
     return pos_global;
 }
 
-BOOL LLNetMap::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLNetMap::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     // note that clicks are reversed from what you'd think: i.e. > 0  means zoom out, < 0 means zoom in
     F32 new_scale = mScale * pow(MAP_SCALE_ZOOM_FACTOR, -clicks);
@@ -708,7 +709,7 @@ BOOL LLNetMap::handleScrollWheel(S32 x, S32 y, S32 clicks)
     return true;
 }
 
-BOOL LLNetMap::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLNetMap::handleToolTip(S32 x, S32 y, MASK mask)
 {
     if (gDisconnected)
     {
@@ -837,12 +838,12 @@ BOOL LLNetMap::handleToolTip(S32 x, S32 y, MASK mask)
     return true;
 }
 
-BOOL LLNetMap::handleToolTipAgent(const LLUUID& avatar_id)
+bool LLNetMap::handleToolTipAgent(const LLUUID& avatar_id)
 {
     LLAvatarName av_name;
     if (avatar_id.isNull() || !LLAvatarNameCache::get(avatar_id, &av_name))
     {
-        return FALSE;
+        return false;
     }
 
     // only show tooltip if same inspector not already open
@@ -863,7 +864,7 @@ BOOL LLNetMap::handleToolTipAgent(const LLUUID& avatar_id)
 
         LLToolTipMgr::instance().show(p);
     }
-    return TRUE;
+    return true;
 }
 
 // static
@@ -915,6 +916,7 @@ void LLNetMap::renderPoint(const LLVector3 &pos_local, const LLColor4U &color,
         return;
     }
 
+    LLImageDataLock lock(mObjectRawImagep);
     U8 *datap = mObjectRawImagep->getData();
 
     S32 neg_radius = diameter / 2;
@@ -1001,13 +1003,13 @@ void LLNetMap::createObjectImage()
         mObjectRawImagep = new LLImageRaw(img_size, img_size, 4);
         U8* data = mObjectRawImagep->getData();
         memset( data, 0, img_size * img_size * 4 );
-        mObjectImagep = LLViewerTextureManager::getLocalTexture( mObjectRawImagep.get(), FALSE);
+        mObjectImagep = LLViewerTextureManager::getLocalTexture( mObjectRawImagep.get(), false);
     }
     setScale(mScale);
     mUpdateNow = true;
 }
 
-BOOL LLNetMap::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLNetMap::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // Start panning
     gFocusMgr.setMouseCapture(this);
@@ -1018,7 +1020,7 @@ BOOL LLNetMap::handleMouseDown(S32 x, S32 y, MASK mask)
     return true;
 }
 
-BOOL LLNetMap::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLNetMap::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if (abs(mMouseDown.mX - x) < 3 && abs(mMouseDown.mY - y) < 3)
     {
@@ -1051,7 +1053,7 @@ BOOL LLNetMap::handleMouseUp(S32 x, S32 y, MASK mask)
     return false;
 }
 
-BOOL LLNetMap::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLNetMap::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     auto menu = static_cast<LLMenuGL*>(mPopupMenuHandle.get());
     if (menu)
@@ -1062,20 +1064,20 @@ BOOL LLNetMap::handleRightMouseDown(S32 x, S32 y, MASK mask)
         menu->setItemEnabled("Stop Tracking", LLTracker::isTracking(0));
         LLMenuGL::showPopup(this, menu, x, y);
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLNetMap::handleClick(S32 x, S32 y, MASK mask)
+bool LLNetMap::handleClick(S32 x, S32 y, MASK mask)
 {
     // TODO: allow clicking an avatar on minimap to select avatar in the nearby avatar list
     // if(mClosestAgentToCursor.notNull())
     //     mNearbyList->selectUser(mClosestAgentToCursor);
     // Needs a registered observer i guess to accomplish this without using
     // globals to tell the mNearbyList in llpeoplepanel to select the user
-    return TRUE;
+    return true;
 }
 
-BOOL LLNetMap::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLNetMap::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     LLVector3d pos_global = viewPosToGlobal(x, y);
 
@@ -1104,7 +1106,7 @@ BOOL LLNetMap::handleDoubleClick(S32 x, S32 y, MASK mask)
     {
         LLFloaterReg::showInstance("world_map");
     }
-    return TRUE;
+    return true;
 }
 
 F32 LLNetMap::getScaleForName(std::string scale_name)
@@ -1137,7 +1139,7 @@ bool LLNetMap::outsideSlop( S32 x, S32 y, S32 start_x, S32 start_y, S32 slop )
     return (dx <= -slop || slop <= dx || dy <= -slop || slop <= dy);
 }
 
-BOOL LLNetMap::handleHover( S32 x, S32 y, MASK mask )
+bool LLNetMap::handleHover( S32 x, S32 y, MASK mask )
 {
     if (hasMouseCapture())
     {
@@ -1171,7 +1173,7 @@ BOOL LLNetMap::handleHover( S32 x, S32 y, MASK mask )
         gViewerWindow->setCursor( UI_CURSOR_CROSS );
     }
 
-    return TRUE;
+    return true;
 }
 
 bool LLNetMap::isZoomChecked(const LLSD &userdata)
diff --git a/indra/newview/llnetmap.h b/indra/newview/llnetmap.h
index 7e8339acf0..7bb13c9f2b 100644
--- a/indra/newview/llnetmap.h
+++ b/indra/newview/llnetmap.h
@@ -70,17 +70,17 @@ public:
     static const F32 MAP_SCALE_MAX;
 
     /*virtual*/ void    draw();
-    /*virtual*/ BOOL    handleScrollWheel(S32 x, S32 y, S32 clicks);
-    /*virtual*/ BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleHover( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL    handleToolTip( S32 x, S32 y, MASK mask);
-    /*virtual*/ void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
-
-    /*virtual*/ BOOL    postBuild();
-    /*virtual*/ BOOL    handleRightMouseDown( S32 x, S32 y, MASK mask );
-    /*virtual*/ BOOL    handleClick(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleDoubleClick( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool    handleScrollWheel(S32 x, S32 y, S32 clicks);
+    /*virtual*/ bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleHover( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool    handleToolTip( S32 x, S32 y, MASK mask);
+    /*virtual*/ void    reshape(S32 width, S32 height, bool called_from_parent = true);
+
+    /*virtual*/ bool    postBuild();
+    /*virtual*/ bool    handleRightMouseDown( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool    handleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleDoubleClick( S32 x, S32 y, MASK mask );
 
     void            setScale(F32 scale);
 
@@ -105,10 +105,10 @@ private:
 
     void            drawTracking( const LLVector3d& pos_global,
                                   const LLColor4& color,
-                                  BOOL draw_arrow = TRUE);
+                                  bool draw_arrow = true);
     bool            isMouseOnPopupMenu();
     void            updateAboutLandPopupButton();
-    BOOL            handleToolTipAgent(const LLUUID& avatar_id);
+    bool            handleToolTipAgent(const LLUUID& avatar_id);
     static void     showAvatarInspector(const LLUUID& avatar_id);
 
     void            createObjectImage();
diff --git a/indra/newview/llnotificationhandlerutil.cpp b/indra/newview/llnotificationhandlerutil.cpp
index 77ab242d3b..23f1f8fa5a 100644
--- a/indra/newview/llnotificationhandlerutil.cpp
+++ b/indra/newview/llnotificationhandlerutil.cpp
@@ -60,11 +60,9 @@ bool LLHandlerUtil::isIMFloaterOpened(const LLNotificationPtr& notification)
 
     LLUUID from_id = notification->getPayload()["from_id"];
     LLUUID session_id = LLIMMgr::computeSessionID(IM_NOTHING_SPECIAL, from_id);
-    LLFloaterIMSession* im_floater = LLFloaterReg::findTypedInstance<LLFloaterIMSession>("impanel", session_id);
-
-    if (im_floater != NULL)
+    if (LLFloaterIMSession* im_floater = LLFloaterReg::findTypedInstance<LLFloaterIMSession>("impanel", session_id))
     {
-        res = im_floater->getVisible() == TRUE;
+        res = im_floater->getVisible();
     }
 
     return res;
diff --git a/indra/newview/llnotificationlistitem.cpp b/indra/newview/llnotificationlistitem.cpp
index 62349f43b1..5b8b28ebe6 100644
--- a/indra/newview/llnotificationlistitem.cpp
+++ b/indra/newview/llnotificationlistitem.cpp
@@ -56,9 +56,9 @@ LLNotificationListItem::LLNotificationListItem(const Params& p) : LLPanel(p),
     mNotificationName = p.notification_name;
 }
 
-BOOL LLNotificationListItem::postBuild()
+bool LLNotificationListItem::postBuild()
 {
-    BOOL rv = LLPanel::postBuild();
+    bool rv = LLPanel::postBuild();
     mTitleBox = getChild<LLTextBox>("notification_title");
     mTitleBoxExp = getChild<LLTextBox>("notification_title_exp");
     mNoticeTextExp = getChild<LLChatEntry>("notification_text_exp");
@@ -73,7 +73,7 @@ BOOL LLNotificationListItem::postBuild()
     mTitleBox->setValue(mParams.title);
     mTitleBoxExp->setValue(mParams.title);
     mNoticeTextExp->setValue(mParams.title);
-    mNoticeTextExp->setEnabled(FALSE);
+    mNoticeTextExp->setEnabled(false);
     mNoticeTextExp->setTextExpandedCallback(boost::bind(&LLNotificationListItem::reshapeNotification, this));
 
     mTitleBox->setContentTrusted(false);
@@ -99,7 +99,7 @@ BOOL LLNotificationListItem::postBuild()
     mExpandedHeight = (S32)atoi(expanded_height_str.c_str());
     mCondensedHeight = (S32)atoi(condensed_height_str.c_str());
 
-    setExpanded(FALSE);
+    setExpanded(false);
 
     return rv;
 }
@@ -151,9 +151,9 @@ void LLNotificationListItem::onClickCloseBtn()
     close();
 }
 
-BOOL LLNotificationListItem::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLNotificationListItem::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL res = LLPanel::handleMouseUp(x, y, mask);
+    bool res = LLPanel::handleMouseUp(x, y, mask);
     mOnItemClick(this);
     return res;
 }
@@ -208,12 +208,12 @@ std::set<std::string> LLNotificationListItem::getTransactionTypes()
 
 void LLNotificationListItem::onClickExpandBtn()
 {
-    setExpanded(TRUE);
+    setExpanded(true);
 }
 
 void LLNotificationListItem::onClickCondenseBtn()
 {
-    setExpanded(FALSE);
+    setExpanded(false);
 }
 
 void LLNotificationListItem::reshapeNotification()
@@ -221,11 +221,11 @@ void LLNotificationListItem::reshapeNotification()
     if(mExpanded)
     {
         S32 width = this->getRect().getWidth();
-        this->reshape(width, mNoticeTextExp->getRect().getHeight() + mExpandedHeight, FALSE);
+        this->reshape(width, mNoticeTextExp->getRect().getHeight() + mExpandedHeight, false);
     }
 }
 
-void LLNotificationListItem::setExpanded(BOOL value)
+void LLNotificationListItem::setExpanded(bool value)
 {
     mCondensedViewPanel->setVisible(!value);
     mExpandedViewPanel->setVisible(value);
@@ -233,11 +233,11 @@ void LLNotificationListItem::setExpanded(BOOL value)
 
     if (value)
     {
-       this->reshape(width, mNoticeTextExp->getRect().getHeight() + mExpandedHeight, FALSE);
+       this->reshape(width, mNoticeTextExp->getRect().getHeight() + mExpandedHeight, false);
     }
     else
     {
-        this->reshape(width, mCondensedHeight, FALSE);
+        this->reshape(width, mCondensedHeight, false);
     }
     mExpanded = value;
 
@@ -278,12 +278,12 @@ LLGroupInviteNotificationListItem::LLGroupInviteNotificationListItem(const Param
     buildFromFile("panel_notification_list_item.xml");
 }
 
-BOOL LLGroupInviteNotificationListItem::postBuild()
+bool LLGroupInviteNotificationListItem::postBuild()
 {
-    BOOL rv = LLGroupNotificationListItem::postBuild();
+    bool rv = LLGroupNotificationListItem::postBuild();
     setFee(mParams.fee);
     mInviteButtonPanel = getChild<LLPanel>("button_panel");
-    mInviteButtonPanel->setVisible(TRUE);
+    mInviteButtonPanel->setVisible(true);
     mJoinBtn = getChild<LLButton>("join_btn");
     mDeclineBtn = getChild<LLButton>("decline_btn");
     mInfoBtn = getChild<LLButton>("info_btn");
@@ -338,8 +338,8 @@ void LLGroupInviteNotificationListItem::setFee(S32 fee)
     std::string fee_text = getString("group_fee_text", string_args);
     mSenderOrFeeBox->setValue(fee_text);
     mSenderOrFeeBoxExp->setValue(fee_text);
-    mSenderOrFeeBox->setVisible(TRUE);
-    mSenderOrFeeBoxExp->setVisible(TRUE);
+    mSenderOrFeeBox->setVisible(true);
+    mSenderOrFeeBoxExp->setVisible(true);
 }
 
 LLGroupNoticeNotificationListItem::LLGroupNoticeNotificationListItem(const Params& p)
@@ -363,15 +363,15 @@ LLGroupNotificationListItem::~LLGroupNotificationListItem()
     LLGroupMgr::getInstance()->removeObserver(this);
 }
 
-BOOL LLGroupNoticeNotificationListItem::postBuild()
+bool LLGroupNoticeNotificationListItem::postBuild()
 {
-    BOOL rv = LLGroupNotificationListItem::postBuild();
+    bool rv = LLGroupNotificationListItem::postBuild();
 
     mAttachmentTextBox = getChild<LLTextBox>("attachment_text");
     mAttachmentIcon = getChild<LLIconCtrl>("attachment_icon");
     mAttachmentIconExp = getChild<LLIconCtrl>("attachment_icon_exp");
     mAttachmentPanel = getChild<LLPanel>("attachment_panel");
-    mAttachmentPanel->setVisible(FALSE);
+    mAttachmentPanel->setVisible(false);
 
 
     mTitleBox->setValue(mParams.subject);
@@ -391,13 +391,13 @@ BOOL LLGroupNoticeNotificationListItem::postBuild()
     if (mInventoryOffer != NULL)
     {
         mAttachmentTextBox->setValue(mInventoryOffer->mDesc);
-        mAttachmentTextBox->setVisible(TRUE);
-        mAttachmentIcon->setVisible(TRUE);
+        mAttachmentTextBox->setVisible(true);
+        mAttachmentIcon->setVisible(true);
 
         std::string icon_name = LLInventoryIcon::getIconName(mInventoryOffer->mType,
           LLInventoryType::IT_TEXTURE);
         mAttachmentIconExp->setValue(icon_name);
-        mAttachmentIconExp->setVisible(TRUE);
+        mAttachmentIconExp->setVisible(true);
 
         mAttachmentTextBox->setClickedCallback(boost::bind(
             &LLGroupNoticeNotificationListItem::onClickAttachment, this));
@@ -405,14 +405,14 @@ BOOL LLGroupNoticeNotificationListItem::postBuild()
         std::string expanded_height_resize_str = getString("expanded_height_resize_for_attachment");
         mExpandedHeightResize = (S32)atoi(expanded_height_resize_str.c_str());
 
-        mAttachmentPanel->setVisible(TRUE);
+        mAttachmentPanel->setVisible(true);
     }
     return rv;
 }
 
-BOOL LLGroupNotificationListItem::postBuild()
+bool LLGroupNotificationListItem::postBuild()
 {
-    BOOL rv = LLNotificationListItem::postBuild();
+    bool rv = LLNotificationListItem::postBuild();
 
     mGroupIcon = getChild<LLGroupIconCtrl>("group_icon");
     mGroupIconExp = getChild<LLGroupIconCtrl>("group_icon_exp");
@@ -421,8 +421,8 @@ BOOL LLGroupNotificationListItem::postBuild()
     mGroupIcon->setValue(mParams.group_id);
     mGroupIconExp->setValue(mParams.group_id);
 
-    mGroupIcon->setVisible(TRUE);
-    mGroupIconExp->setVisible(TRUE);
+    mGroupIcon->setVisible(true);
+    mGroupIconExp->setVisible(true);
 
     mGroupId = mParams.group_id;
 
@@ -479,12 +479,12 @@ void LLGroupNotificationListItem::setGroupName(std::string name)
         string_args["[GROUP_NAME]"] = llformat("%s", name.c_str());
         std::string group_box_str = getString("group_name_text", string_args);
         mGroupNameBoxExp->setValue(group_box_str);
-        mGroupNameBoxExp->setVisible(TRUE);
+        mGroupNameBoxExp->setVisible(true);
     }
     else
     {
         mGroupNameBoxExp->setValue(LLStringUtil::null);
-        mGroupNameBoxExp->setVisible(FALSE);
+        mGroupNameBoxExp->setVisible(false);
     }
 }
 
@@ -497,13 +497,13 @@ void LLGroupNoticeNotificationListItem::setSender(std::string sender)
         std::string sender_text = getString("sender_resident_text", string_args);
         mSenderOrFeeBox->setValue(sender_text);
         mSenderOrFeeBoxExp->setValue(sender_text);
-        mSenderOrFeeBox->setVisible(TRUE);
-        mSenderOrFeeBoxExp->setVisible(TRUE);
+        mSenderOrFeeBox->setVisible(true);
+        mSenderOrFeeBoxExp->setVisible(true);
     } else {
         mSenderOrFeeBox->setValue(LLStringUtil::null);
         mSenderOrFeeBoxExp->setValue(LLStringUtil::null);
-        mSenderOrFeeBox->setVisible(FALSE);
-        mSenderOrFeeBoxExp->setVisible(FALSE);
+        mSenderOrFeeBox->setVisible(false);
+        mSenderOrFeeBoxExp->setVisible(false);
     }
 }
 void LLGroupNoticeNotificationListItem::close()
@@ -524,7 +524,7 @@ void LLGroupNoticeNotificationListItem::onClickAttachment()
         static const LLUIColor textColor = LLUIColorTable::instance().getColor(
             "GroupNotifyDimmedTextColor");
         mAttachmentTextBox->setColor(textColor);
-        mAttachmentIconExp->setEnabled(FALSE);
+        mAttachmentIconExp->setEnabled(false);
 
         //if attachment isn't openable - notify about saving
         if (!isAttachmentOpenable(mInventoryOffer->mType)) {
@@ -559,16 +559,16 @@ LLTransactionNotificationListItem::LLTransactionNotificationListItem(const Param
     buildFromFile("panel_notification_list_item.xml");
 }
 
-BOOL LLTransactionNotificationListItem::postBuild()
+bool LLTransactionNotificationListItem::postBuild()
 {
-    BOOL rv = LLNotificationListItem::postBuild();
+    bool rv = LLNotificationListItem::postBuild();
     mAvatarIcon = getChild<LLAvatarIconCtrl>("avatar_icon");
     mAvatarIconExp = getChild<LLAvatarIconCtrl>("avatar_icon_exp");
     mAvatarIcon->setValue("System_Notification");
     mAvatarIconExp->setValue("System_Notification");
 
-    mAvatarIcon->setVisible(TRUE);
-    mAvatarIconExp->setVisible(TRUE);
+    mAvatarIcon->setVisible(true);
+    mAvatarIconExp->setVisible(true);
     if((GOVERNOR_LINDEN_ID == mParams.paid_to_id) ||
        (GOVERNOR_LINDEN_ID == mParams.paid_from_id))
     {
@@ -606,14 +606,14 @@ LLSystemNotificationListItem::LLSystemNotificationListItem(const Params& p)
     }
 }
 
-BOOL LLSystemNotificationListItem::postBuild()
+bool LLSystemNotificationListItem::postBuild()
 {
-    BOOL rv = LLNotificationListItem::postBuild();
+    bool rv = LLNotificationListItem::postBuild();
     mSystemNotificationIcon = getChild<LLIconCtrl>("system_notification_icon");
     mSystemNotificationIconExp = getChild<LLIconCtrl>("system_notification_icon_exp");
     if (mSystemNotificationIcon)
-        mSystemNotificationIcon->setVisible(TRUE);
+        mSystemNotificationIcon->setVisible(true);
     if (mSystemNotificationIconExp)
-        mSystemNotificationIconExp->setVisible(TRUE);
+        mSystemNotificationIconExp->setVisible(true);
     return rv;
 }
diff --git a/indra/newview/llnotificationlistitem.h b/indra/newview/llnotificationlistitem.h
index 1c454c5556..2ed90e31b2 100644
--- a/indra/newview/llnotificationlistitem.h
+++ b/indra/newview/llnotificationlistitem.h
@@ -79,7 +79,7 @@ public:
     std::string& getNotificationName() { return mNotificationName; }
 
     // handlers
-    virtual BOOL handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseUp(S32 x, S32 y, MASK mask);
     virtual void onMouseEnter(S32 x, S32 y, MASK mask);
     virtual void onMouseLeave(S32 x, S32 y, MASK mask);
 
@@ -92,8 +92,8 @@ public:
     boost::signals2::connection setOnItemClickCallback(item_callback_t cb) { return mOnItemClick.connect(cb); }
 
     virtual bool showPopup() { return true; }
-    void setExpanded(BOOL value);
-    virtual BOOL postBuild();
+    void setExpanded(bool value);
+    virtual bool postBuild();
     void reshapeNotification();
 
     typedef enum e_time_type
@@ -138,7 +138,7 @@ class LLGroupNotificationListItem
 {
 public:
     virtual ~LLGroupNotificationListItem();
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     void setGroupId(const LLUUID& value);
     // LLGroupMgrObserver observer trigger
@@ -168,7 +168,7 @@ class LLGroupInviteNotificationListItem
 {
 public:
     static std::set<std::string> getTypes();
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     /*virtual*/ bool showPopup() { return false; }
 
@@ -195,7 +195,7 @@ class LLGroupNoticeNotificationListItem
 {
 public:
     static std::set<std::string> getTypes();
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     /*virtual*/ bool showPopup() { return false; }
 
@@ -222,7 +222,7 @@ class LLTransactionNotificationListItem : public LLNotificationListItem
 {
 public:
     static std::set<std::string> getTypes();
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 private:
     friend class LLNotificationListItem;
     LLTransactionNotificationListItem(const Params& p);
@@ -235,7 +235,7 @@ private:
 class LLSystemNotificationListItem : public LLNotificationListItem
 {
 public:
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 private:
     friend class LLNotificationListItem;
     LLSystemNotificationListItem(const Params& p);
diff --git a/indra/newview/llnotificationofferhandler.cpp b/indra/newview/llnotificationofferhandler.cpp
index fd2fa90b8c..b65da28bda 100644
--- a/indra/newview/llnotificationofferhandler.cpp
+++ b/indra/newview/llnotificationofferhandler.cpp
@@ -69,20 +69,19 @@ void LLOfferHandler::initChannel()
 //--------------------------------------------------------------------------
 bool LLOfferHandler::processNotification(const LLNotificationPtr& notification, bool should_log)
 {
-    if(mChannel.isDead())
+    if (mChannel.isDead())
     {
         return false;
     }
 
     // arrange a channel on a screen
-    if(!mChannel.get()->getVisible())
+    if (!mChannel.get()->getVisible())
     {
         initChannel();
     }
 
-
-    if( notification->getPayload().has("give_inventory_notification")
-        && notification->getPayload()["give_inventory_notification"].asBoolean() == false)
+    if (notification->getPayload().has("give_inventory_notification") &&
+        !notification->getPayload()["give_inventory_notification"].asBoolean())
     {
         // This is an original inventory offer, so add a script floater
         LLScriptFloaterManager::instance().onAddNotification(notification->getID());
diff --git a/indra/newview/lloutfitgallery.cpp b/indra/newview/lloutfitgallery.cpp
index 0b127b1b93..96be917019 100644
--- a/indra/newview/lloutfitgallery.cpp
+++ b/indra/newview/lloutfitgallery.cpp
@@ -105,9 +105,9 @@ const LLOutfitGallery::Params& LLOutfitGallery::getDefaultParams()
     return LLUICtrlFactory::getDefaultParams<LLOutfitGallery>();
 }
 
-BOOL LLOutfitGallery::postBuild()
+bool LLOutfitGallery::postBuild()
 {
-    BOOL rv = LLOutfitListBase::postBuild();
+    bool rv = LLOutfitListBase::postBuild();
     mScrollPanel = getChild<LLScrollContainer>("gallery_scroll_panel");
     LLPanel::Params params = LLPanel::getDefaultParams(); // Don't parse XML when creating dummy LLPanel
     mGalleryPanel = LLUICtrlFactory::create<LLPanel>(params);
@@ -123,7 +123,7 @@ void LLOutfitGallery::onOpen(const LLSD& info)
     {
         uuid_vec_t cats;
         getCurrentCategories(cats);
-        int n = cats.size();
+        int n = static_cast<int>(cats.size());
         buildGalleryPanel(n);
         mScrollPanel->addChild(mGalleryPanel);
         for (int i = 0; i < n; i++)
@@ -144,9 +144,9 @@ void LLOutfitGallery::draw()
     }
 }
 
-BOOL LLOutfitGallery::handleKeyHere(KEY key, MASK mask)
+bool LLOutfitGallery::handleKeyHere(KEY key, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     switch (key)
     {
         case KEY_RETURN:
@@ -156,7 +156,7 @@ BOOL LLOutfitGallery::handleKeyHere(KEY key, MASK mask)
                 // Or should it wearSelectedOutfit?
                 getSelectedItem()->openOutfitsContent();
             }
-            handled = TRUE;
+            handled = true;
             break;
         case KEY_DELETE:
 #if LL_DARWIN
@@ -168,12 +168,12 @@ BOOL LLOutfitGallery::handleKeyHere(KEY key, MASK mask)
             {
                 onRemoveOutfit(mSelectedOutfitUUID);
             }
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_F2:
             LLAppearanceMgr::instance().renameOutfit(mSelectedOutfitUUID);
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_PAGE_UP:
@@ -181,7 +181,7 @@ BOOL LLOutfitGallery::handleKeyHere(KEY key, MASK mask)
             {
                 mScrollPanel->pageUp(30);
             }
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_PAGE_DOWN:
@@ -189,7 +189,7 @@ BOOL LLOutfitGallery::handleKeyHere(KEY key, MASK mask)
             {
                 mScrollPanel->pageDown(30);
             }
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_HOME:
@@ -197,7 +197,7 @@ BOOL LLOutfitGallery::handleKeyHere(KEY key, MASK mask)
             {
                 mScrollPanel->goToTop();
             }
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_END:
@@ -205,27 +205,27 @@ BOOL LLOutfitGallery::handleKeyHere(KEY key, MASK mask)
             {
                 mScrollPanel->goToBottom();
             }
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_LEFT:
             moveLeft();
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_RIGHT:
             moveRight();
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_UP:
             moveUp();
-            handled = TRUE;
+            handled = true;
             break;
 
         case KEY_DOWN:
             moveDown();
-            handled = TRUE;
+            handled = true;
             break;
 
         default:
@@ -254,7 +254,7 @@ void LLOutfitGallery::moveUp()
                 item = mIndexToItemMap[n];
                 LLUUID item_id = item->getUUID();
                 ChangeOutfitSelection(nullptr, item_id);
-                item->setFocus(TRUE);
+                item->setFocus(true);
 
                 scrollToShowItem(mSelectedOutfitUUID);
             }
@@ -276,7 +276,7 @@ void LLOutfitGallery::moveDown()
                 item = mIndexToItemMap[n];
                 LLUUID item_id = item->getUUID();
                 ChangeOutfitSelection(nullptr, item_id);
-                item->setFocus(TRUE);
+                item->setFocus(true);
 
                 scrollToShowItem(mSelectedOutfitUUID);
             }
@@ -301,7 +301,7 @@ void LLOutfitGallery::moveLeft()
             item = mIndexToItemMap[n];
             LLUUID item_id = item->getUUID();
             ChangeOutfitSelection(nullptr, item_id);
-            item->setFocus(TRUE);
+            item->setFocus(true);
 
             scrollToShowItem(mSelectedOutfitUUID);
         }
@@ -324,7 +324,7 @@ void LLOutfitGallery::moveRight()
             item = mIndexToItemMap[n];
             LLUUID item_id = item->getUUID();
             ChangeOutfitSelection(nullptr, item_id);
-            item->setFocus(TRUE);
+            item->setFocus(true);
 
             scrollToShowItem(mSelectedOutfitUUID);
         }
@@ -601,8 +601,8 @@ void LLOutfitGallery::removeFromGalleryMiddle(LLOutfitGalleryItem* item)
         removeFromGalleryLast(mItems[i]);
     }
     removeFromGalleryLast(mItems[n]);
-    int saved_count = saved.size();
-    for (int i = 0; i < saved_count; i++)
+    auto saved_count = saved.size();
+    for (size_t i = 0; i < saved_count; i++)
     {
         addToGallery(saved.back());
         saved.pop_back();
@@ -860,11 +860,11 @@ void LLOutfitGallery::onChangeOutfitSelection(LLWearableItemsList* list, const L
         return;
     if (mOutfitMap[mSelectedOutfitUUID])
     {
-        mOutfitMap[mSelectedOutfitUUID]->setSelected(FALSE);
+        mOutfitMap[mSelectedOutfitUUID]->setSelected(false);
     }
     if (mOutfitMap[category_id])
     {
-        mOutfitMap[category_id]->setSelected(TRUE);
+        mOutfitMap[category_id]->setSelected(true);
     }
     // mSelectedOutfitUUID will be set in LLOutfitListBase::ChangeOutfitSelection
 }
@@ -897,15 +897,15 @@ void LLOutfitGallery::updateMessageVisibility()
 {
     if (mItems.empty())
     {
-        mMessageTextBox->setVisible(TRUE);
-        mScrollPanel->setVisible(FALSE);
+        mMessageTextBox->setVisible(true);
+        mScrollPanel->setVisible(false);
         std::string message = getString(getFilterSubString().empty() ? "no_outfits_msg" : "no_matched_outfits_msg");
         mMessageTextBox->setValue(message);
     }
     else
     {
-        mScrollPanel->setVisible(TRUE);
-        mMessageTextBox->setVisible(FALSE);
+        mScrollPanel->setVisible(true);
+        mMessageTextBox->setVisible(false);
     }
 }
 
@@ -934,7 +934,7 @@ LLOutfitGalleryItem::~LLOutfitGalleryItem()
 
 }
 
-BOOL LLOutfitGalleryItem::postBuild()
+bool LLOutfitGalleryItem::postBuild()
 {
     setDefaultImage();
 
@@ -943,7 +943,7 @@ BOOL LLOutfitGalleryItem::postBuild()
     mTextBgPanel = getChild<LLPanel>("text_bg_panel");
     setOutfitWorn(false);
     mHidden = false;
-    return TRUE;
+    return true;
 }
 
 void LLOutfitGalleryItem::draw()
@@ -954,7 +954,7 @@ void LLOutfitGalleryItem::draw()
     LLUIColor border_color = LLUIColorTable::instance().getColor(mSelected ? "OutfitGalleryItemSelected" : "OutfitGalleryItemUnselected", LLColor4::white);
     LLRect border = getChildView("preview_outfit")->getRect();
     border.mRight = border.mRight + 1;
-    gl_rect_2d(border, border_color.get(), FALSE);
+    gl_rect_2d(border, border_color.get(), false);
 
     // If the floater is focused, don't apply its alpha to the texture (STORM-677).
     const F32 alpha = getTransparencyType() == TT_ACTIVE ? 1.0f : getCurrentTransparency();
@@ -1010,31 +1010,31 @@ void LLOutfitGalleryItem::setSelected(bool value)
     setOutfitWorn(mWorn);
 }
 
-BOOL LLOutfitGalleryItem::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLOutfitGalleryItem::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    setFocus(TRUE);
+    setFocus(true);
     return LLUICtrl::handleMouseDown(x, y, mask);
 }
 
-BOOL LLOutfitGalleryItem::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLOutfitGalleryItem::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    setFocus(TRUE);
+    setFocus(true);
     return LLUICtrl::handleRightMouseDown(x, y, mask);
 }
 
-BOOL LLOutfitGalleryItem::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLOutfitGalleryItem::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     return openOutfitsContent() || LLPanel::handleDoubleClick(x, y, mask);
 }
 
-BOOL LLOutfitGalleryItem::handleKeyHere(KEY key, MASK mask)
+bool LLOutfitGalleryItem::handleKeyHere(KEY key, MASK mask)
 {
     if (!mGallery)
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL handled = FALSE;
+    bool handled = false;
     switch (key)
     {
         case KEY_LEFT:
@@ -1110,7 +1110,7 @@ bool LLOutfitGalleryItem::setImageAssetId(LLUUID image_asset_id)
     {
         mImageAssetId = image_asset_id;
         mTexturep = texture;
-        getChildView("preview_outfit")->setVisible(FALSE);
+        getChildView("preview_outfit")->setVisible(false);
         mDefaultImage = false;
         mImageUpdatePending = (texture->getDiscardLevel() == -1);
         return true;
@@ -1127,7 +1127,7 @@ void LLOutfitGalleryItem::setDefaultImage()
 {
     mTexturep = NULL;
     mImageAssetId.setNull();
-    getChildView("preview_outfit")->setVisible(TRUE);
+    getChildView("preview_outfit")->setVisible(true);
     mDefaultImage = true;
     mImageUpdatePending = false;
 }
@@ -1187,10 +1187,11 @@ void LLOutfitGalleryGearMenu::onUpdateItemsVisibility()
 {
     if (!mMenu) return;
     bool have_selection = getSelectedOutfitID().notNull();
-    mMenu->setItemVisible("expand", FALSE);
-    mMenu->setItemVisible("collapse", FALSE);
+    mMenu->setItemVisible("expand", false);
+    mMenu->setItemVisible("collapse", false);
     mMenu->setItemVisible("thumbnail", have_selection);
-    mMenu->setItemVisible("sort_folders_by_name", TRUE);
+    mMenu->setItemVisible("sepatator3", true);
+    mMenu->setItemVisible("sort_folders_by_name", true);
     LLOutfitListGearMenuBase::onUpdateItemsVisibility();
 }
 
@@ -1278,7 +1279,7 @@ void LLOutfitGallery::refreshOutfit(const LLUUID& category_id)
                         LLFloater* appearance_floater = LLFloaterReg::getInstance("appearance");
                         if (appearance_floater)
                         {
-                            appearance_floater->setFocus(TRUE);
+                            appearance_floater->setFocus(true);
                         }
                     }
                     if (item_name == LLAppearanceMgr::sExpectedTextureName)
diff --git a/indra/newview/lloutfitgallery.h b/indra/newview/lloutfitgallery.h
index 97a902ce6a..d921a7fe72 100644
--- a/indra/newview/lloutfitgallery.h
+++ b/indra/newview/lloutfitgallery.h
@@ -71,10 +71,10 @@ public:
     LLOutfitGallery(const LLOutfitGallery::Params& params = getDefaultParams());
     virtual ~LLOutfitGallery();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& info);
     /*virtual*/ void draw();
-    /*virtual*/ BOOL handleKeyHere(KEY key, MASK mask);
+    /*virtual*/ bool handleKeyHere(KEY key, MASK mask);
     void moveUp();
     void moveDown();
     void moveLeft();
@@ -100,7 +100,7 @@ public:
     /*virtual*/ bool hasItemSelected();
     /*virtual*/ bool canWearSelected();
 
-    /*virtual*/ bool getHasExpandableFolders() { return FALSE; }
+    /*virtual*/ bool getHasExpandableFolders() { return false; }
 
     void updateMessageVisibility();
     bool hasDefaultImage(const LLUUID& outfit_cat_id);
@@ -226,12 +226,12 @@ public:
     LLOutfitGalleryItem(const Params& p);
     virtual ~LLOutfitGalleryItem();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void draw();
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleKeyHere(KEY key, MASK mask);
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleKeyHere(KEY key, MASK mask);
     /*virtual*/ void onFocusLost();
     /*virtual*/ void onFocusReceived();
 
diff --git a/indra/newview/lloutfitslist.cpp b/indra/newview/lloutfitslist.cpp
index 84e646a93a..0f5f7aebf8 100644
--- a/indra/newview/lloutfitslist.cpp
+++ b/indra/newview/lloutfitslist.cpp
@@ -110,7 +110,7 @@ LLOutfitsList::~LLOutfitsList()
 {
 }
 
-BOOL LLOutfitsList::postBuild()
+bool LLOutfitsList::postBuild()
 {
     mAccordion = getChild<LLAccordionCtrl>("outfits_accordion");
     mAccordion->setComparator(&OUTFIT_TAB_NAME_COMPARATOR);
@@ -279,11 +279,11 @@ void LLOutfitListBase::performAction(std::string action)
 
     if ("replaceoutfit" == action)
     {
-        LLAppearanceMgr::instance().wearInventoryCategory( cat, FALSE, FALSE );
+        LLAppearanceMgr::instance().wearInventoryCategory( cat, false, false );
     }
     else if ("addtooutfit" == action)
     {
-        LLAppearanceMgr::instance().wearInventoryCategory( cat, FALSE, TRUE );
+        LLAppearanceMgr::instance().wearInventoryCategory( cat, false, true );
     }
     else if ("rename_outfit" == action)
     {
@@ -305,7 +305,7 @@ void LLOutfitsList::onSetSelectedOutfitByUUID(const LLUUID& outfit_uuid)
             LLWearableItemsList* list = dynamic_cast<LLWearableItemsList*>(tab->getAccordionView());
             if (!list) continue;
 
-            tab->setFocus(TRUE);
+            tab->setFocus(true);
             ChangeOutfitSelection(list, outfit_uuid);
 
             tab->changeOpenClose(false);
@@ -376,7 +376,7 @@ void LLOutfitsList::getSelectedItemsUUIDs(uuid_vec_t& selected_uuids) const
         uuid_vec_t uuids;
         (*iter).second->getSelectedUUIDs(uuids);
 
-        S32 prev_size = selected_uuids.size();
+        auto prev_size = selected_uuids.size();
         selected_uuids.resize(prev_size + uuids.size());
         std::copy(uuids.begin(), uuids.end(), selected_uuids.begin() + prev_size);
     }
@@ -443,7 +443,7 @@ void LLOutfitsList::resetItemSelection(LLWearableItemsList* list, const LLUUID&
 
 void LLOutfitsList::onChangeOutfitSelection(LLWearableItemsList* list, const LLUUID& category_id)
 {
-    MASK mask = gKeyboard->currentMask(TRUE);
+    MASK mask = gKeyboard->currentMask(true);
 
     // Reset selection in all previously selected tabs except for the current
     // if new selection is started.
@@ -536,7 +536,7 @@ void LLOutfitsList::onFilterSubStringChanged(const std::string& new_string, cons
         }
         else
         {
-            tab->setVisible(TRUE);
+            tab->setVisible(true);
 
             // Restore tab title when filter is empty
             tab->setTitle(tab->getTitle());
@@ -729,7 +729,7 @@ void LLOutfitsList::onOutfitRightClick(LLUICtrl* ctrl, S32 x, S32 y, const LLUUI
         LLUICtrl* header = tab->findChild<LLUICtrl>("dd_header");
         if (header)
         {
-            header->setFocus(TRUE);
+            header->setFocus(true);
         }
 
         uuid_vec_t selected_uuids;
@@ -924,13 +924,13 @@ void LLOutfitListBase::onIdleRefreshList()
         if (cat)
         {
             std::string name = cat->getName();
-            updateChangedCategoryName(cat, name);
+        updateChangedCategoryName(cat, name);
+    }
 
         curent_time = LLTimer::getTotalSeconds();
         if (curent_time >= end_time)
             return;
     }
-    }
 
     sortOutfits();
     highlightBaseOutfit();
@@ -1020,7 +1020,7 @@ void LLOutfitListBase::ChangeOutfitSelection(LLWearableItemsList* list, const LL
     signalSelectionOutfitUUID(category_id);
 }
 
-BOOL LLOutfitListBase::postBuild()
+bool LLOutfitListBase::postBuild()
 {
     mGearMenu = createGearMenu();
 
@@ -1028,7 +1028,7 @@ BOOL LLOutfitListBase::postBuild()
 
     menu_gear_btn->setMouseDownCallback(boost::bind(&LLOutfitListGearMenuBase::updateItemsVisibility, mGearMenu));
     menu_gear_btn->setMenu(mGearMenu->getMenu());
-    return TRUE;
+    return true;
 }
 
 void LLOutfitListBase::collapseAllFolders()
@@ -1232,7 +1232,7 @@ void LLOutfitListGearMenuBase::onWear()
     if (selected_outfit)
     {
         LLAppearanceMgr::instance().wearInventoryCategory(
-            selected_outfit, /*copy=*/ FALSE, /*append=*/ FALSE);
+            selected_outfit, /*copy=*/ false, /*append=*/ false);
     }
 }
 
@@ -1338,14 +1338,15 @@ LLOutfitListGearMenu::~LLOutfitListGearMenu()
 void LLOutfitListGearMenu::onUpdateItemsVisibility()
 {
     if (!mMenu) return;
-    mMenu->setItemVisible("expand", TRUE);
-    mMenu->setItemVisible("collapse", TRUE);
+    mMenu->setItemVisible("expand", true);
+    mMenu->setItemVisible("collapse", true);
     mMenu->setItemVisible("thumbnail", getSelectedOutfitID().notNull());
-    mMenu->setItemVisible("sort_folders_by_name", FALSE);
+    mMenu->setItemVisible("sepatator3", false);
+    mMenu->setItemVisible("sort_folders_by_name", false);
     LLOutfitListGearMenuBase::onUpdateItemsVisibility();
 }
 
-BOOL LLOutfitAccordionCtrlTab::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLOutfitAccordionCtrlTab::handleToolTip(S32 x, S32 y, MASK mask)
 {
     if (y >= getLocalRect().getHeight() - getHeaderHeight())
     {
@@ -1360,7 +1361,7 @@ BOOL LLOutfitAccordionCtrlTab::handleToolTip(S32 x, S32 y, MASK mask)
                                     .delay_time(LLView::getTooltipTimeout())
                                     .create_callback(boost::bind(&LLInspectTextureUtil::createInventoryToolTip, _1))
                                     .create_params(params));
-        return TRUE;
+        return true;
     }
 
     return LLAccordionCtrlTab::handleToolTip(x, y, mask);
diff --git a/indra/newview/lloutfitslist.h b/indra/newview/lloutfitslist.h
index 11512b6731..f581b419d9 100644
--- a/indra/newview/lloutfitslist.h
+++ b/indra/newview/lloutfitslist.h
@@ -70,7 +70,7 @@ public:
     LLOutfitListBase();
     virtual ~LLOutfitListBase();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& info);
 
     void refreshList(const LLUUID& category_id);
@@ -221,7 +221,7 @@ public:
         Params() : cat_id("cat_id") {}
     };
 
-    virtual BOOL handleToolTip(S32 x, S32 y, MASK mask);
+    virtual bool handleToolTip(S32 x, S32 y, MASK mask);
 
  protected:
     LLOutfitAccordionCtrlTab(const LLOutfitAccordionCtrlTab::Params &p)
@@ -248,7 +248,7 @@ public:
     LLOutfitsList();
     virtual ~LLOutfitsList();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     /*virtual*/ void onOpen(const LLSD& info);
 
@@ -285,7 +285,7 @@ public:
     */
     void onExpandAllFolders();
 
-    /*virtual*/ bool getHasExpandableFolders() { return TRUE; }
+    /*virtual*/ bool getHasExpandableFolders() { return true; }
 
 protected:
     LLOutfitListGearMenuBase* createGearMenu();
diff --git a/indra/newview/lloutputmonitorctrl.cpp b/indra/newview/lloutputmonitorctrl.cpp
index db43c57139..e6421d8a41 100644
--- a/indra/newview/lloutputmonitorctrl.cpp
+++ b/indra/newview/lloutputmonitorctrl.cpp
@@ -231,7 +231,7 @@ void LLOutputMonitorCtrl::draw()
     //  }
 
     //  // Draw rectangle filled with the color.
-    //  gl_rect_2d(xpos, recttop, xpos+rectw, rectbtm, rect_color, TRUE);
+    //  gl_rect_2d(xpos, recttop, xpos+rectw, rectbtm, rect_color, true);
     //  xpos += period;
     //}
 
@@ -239,11 +239,11 @@ void LLOutputMonitorCtrl::draw()
     // Draw bounding box.
     //
     if(mBorder)
-        gl_rect_2d(0, monh, monw, 0, sColorBound, FALSE);
+        gl_rect_2d(0, monh, monw, 0, sColorBound, false);
 }
 
 // virtual
-BOOL LLOutputMonitorCtrl::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLOutputMonitorCtrl::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if (mSpeakerId != gAgentID)
     {
@@ -254,7 +254,7 @@ BOOL LLOutputMonitorCtrl::handleMouseUp(S32 x, S32 y, MASK mask)
         LLFloaterReg::showInstance("chat_voice", LLSD());
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLOutputMonitorCtrl::setIsActiveChannel(bool val)
@@ -267,8 +267,8 @@ void LLOutputMonitorCtrl::setChannelState(EChannelState state)
     mChannelState = state;
     if (state == INACTIVE_CHANNEL)
     {
-        // switchIndicator will set it to TRUE when channel becomes active
-        setVisible(FALSE);
+        // switchIndicator will set it to true when channel becomes active
+        setVisible(false);
     }
 }
 
@@ -325,7 +325,7 @@ void LLOutputMonitorCtrl::onChangeDetailed(const LLMute& mute)
 // virtual
 void LLOutputMonitorCtrl::switchIndicator(bool switch_on)
 {
-    if ((mChannelState != INACTIVE_CHANNEL) && (getVisible() != (BOOL)switch_on))
+    if ((mChannelState != INACTIVE_CHANNEL) && (getVisible() != (bool)switch_on))
     {
         setVisible(switch_on);
 
diff --git a/indra/newview/lloutputmonitorctrl.h b/indra/newview/lloutputmonitorctrl.h
index eefe9800aa..f104bab355 100644
--- a/indra/newview/lloutputmonitorctrl.h
+++ b/indra/newview/lloutputmonitorctrl.h
@@ -68,7 +68,7 @@ public:
 
     // llview overrides
     virtual void    draw();
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
 
     void            setPower(F32 val);
     F32             getPower(F32 val) const { return mPower; }
diff --git a/indra/newview/llpanelavatar.cpp b/indra/newview/llpanelavatar.cpp
index 3f2dc5a415..0e72771bd8 100644
--- a/indra/newview/llpanelavatar.cpp
+++ b/indra/newview/llpanelavatar.cpp
@@ -39,12 +39,7 @@ LLProfileDropTarget::LLProfileDropTarget(const LLProfileDropTarget::Params& p)
     mAgentID(p.agent_id)
 {}
 
-void LLProfileDropTarget::doDrop(EDragAndDropType cargo_type, void* cargo_data)
-{
-    LL_INFOS() << "LLProfileDropTarget::doDrop()" << LL_ENDL;
-}
-
-BOOL LLProfileDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLProfileDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                      EDragAndDropType cargo_type,
                                      void* cargo_data,
                                      EAcceptance* accept,
@@ -55,10 +50,10 @@ BOOL LLProfileDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
         LLToolDragAndDrop::handleGiveDragAndDrop(mAgentID, LLUUID::null, drop,
                                                  cargo_type, cargo_data, accept);
 
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 static LLDefaultChildRegistry::Register<LLProfileDropTarget> r("profile_drop_target");
diff --git a/indra/newview/llpanelavatar.h b/indra/newview/llpanelavatar.h
index ec620b39e1..1b89399771 100644
--- a/indra/newview/llpanelavatar.h
+++ b/indra/newview/llpanelavatar.h
@@ -59,11 +59,9 @@ public:
     LLProfileDropTarget(const Params&);
     ~LLProfileDropTarget() {}
 
-    void doDrop(EDragAndDropType cargo_type, void* cargo_data);
-
     //
     // LLView functionality
-    virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    virtual bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                    EDragAndDropType cargo_type,
                                    void* cargo_data,
                                    EAcceptance* accept,
@@ -97,7 +95,7 @@ public:
     /**
      * Sends update data request to server.
      */
-    virtual void updateData(){};
+    virtual void updateData() {};
 
     /**
      * Clears panel data if viewing avatar info for first time and sends update data request.
diff --git a/indra/newview/llpanelavatartag.cpp b/indra/newview/llpanelavatartag.cpp
index 2c11364dcc..124645e3f9 100644
--- a/indra/newview/llpanelavatartag.cpp
+++ b/indra/newview/llpanelavatartag.cpp
@@ -48,12 +48,12 @@ LLPanelAvatarTag::~LLPanelAvatarTag()
     // Name callbacks will be automatically disconnected since LLPanel is trackable
 }
 
-BOOL LLPanelAvatarTag::postBuild()
+bool LLPanelAvatarTag::postBuild()
 {
     mIcon = getChild<LLAvatarIconCtrl>("avatar_tag_icon");
     mName = getChild<LLTextBox>("sender_tag_name");
     mTime = getChild<LLTextBox>("tag_time");
-    return TRUE;
+    return true;
 }
 
 void LLPanelAvatarTag::draw()
@@ -89,10 +89,10 @@ boost::signals2::connection LLPanelAvatarTag::setLeftButtonClickCallback(
     return setCommitCallback(cb);
 }
 
-BOOL LLPanelAvatarTag::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLPanelAvatarTag::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     onCommit();
-    return TRUE;
+    return true;
 }
 
 void LLPanelAvatarTag::onClick()
diff --git a/indra/newview/llpanelavatartag.h b/indra/newview/llpanelavatartag.h
index a14b7e9dd2..fbc50386a6 100644
--- a/indra/newview/llpanelavatartag.h
+++ b/indra/newview/llpanelavatartag.h
@@ -57,12 +57,12 @@ public:
 
     const LLUUID&   getAvatarId() const { return mAvatarId; }
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void draw();
 
     virtual boost::signals2::connection setLeftButtonClickCallback(
                                                                    const commit_callback_t& cb);
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask);
 
     void onClick();
 private:
@@ -75,7 +75,7 @@ private:
         const LLUUID& id,
         const std::string& first,
         const std::string& last,
-        BOOL is_group);
+        bool is_group);
 
     LLAvatarIconCtrl*       mIcon;          /// status tracking avatar icon
     LLTextBox*              mName;          /// displays avatar name
diff --git a/indra/newview/llpanelblockedlist.cpp b/indra/newview/llpanelblockedlist.cpp
index 5cc567395c..0de22fce25 100644
--- a/indra/newview/llpanelblockedlist.cpp
+++ b/indra/newview/llpanelblockedlist.cpp
@@ -74,10 +74,10 @@ void LLPanelBlockedList::removePicker()
     }
 }
 
-BOOL LLPanelBlockedList::postBuild()
+bool LLPanelBlockedList::postBuild()
 {
     mBlockedList = getChild<LLBlockList>("blocked");
-    mBlockedList->setCommitOnSelectionChange(TRUE);
+    mBlockedList->setCommitOnSelectionChange(true);
     this->setVisibleCallback(boost::bind(&LLPanelBlockedList::removePicker, this));
 
     switch (gSavedSettings.getU32("BlockPeopleSortOrder"))
@@ -181,7 +181,7 @@ void LLPanelBlockedList::onCustomAction(const LLSD& userdata)
     }
 }
 
-BOOL LLPanelBlockedList::isActionChecked(const LLSD& userdata)
+bool LLPanelBlockedList::isActionChecked(const LLSD& userdata)
 {
     std::string item = userdata.asString();
     U32 sort_order = gSavedSettings.getU32("BlockPeopleSortOrder");
@@ -200,13 +200,13 @@ BOOL LLPanelBlockedList::isActionChecked(const LLSD& userdata)
 
 void LLPanelBlockedList::blockResidentByName()
 {
-    const BOOL allow_multiple = FALSE;
-    const BOOL close_on_select = TRUE;
+    const bool allow_multiple = false;
+    const bool close_on_select = true;
 
-    LLView * button = findChild<LLButton>("plus_btn", TRUE);
+    LLView * button = findChild<LLButton>("plus_btn", true);
     LLFloater* root_floater = gFloaterView->getParentFloater(this);
     LLFloaterAvatarPicker * picker = LLFloaterAvatarPicker::show(boost::bind(&LLPanelBlockedList::callbackBlockPicked, this, _1, _2),
-                                                                                    allow_multiple, close_on_select, FALSE, root_floater->getName(), button);
+                                                                                    allow_multiple, close_on_select, false, root_floater->getName(), button);
 
     if (root_floater)
     {
@@ -243,7 +243,7 @@ void LLPanelBlockedList::callbackBlockByName(const std::string& text)
     if (text.empty()) return;
 
     LLMute mute(LLUUID::null, text, LLMute::BY_NAME);
-    BOOL success = LLMuteList::getInstance()->add(mute);
+    bool success = LLMuteList::getInstance()->add(mute);
     if (!success)
     {
         LLNotificationsUtil::add("MuteByNameFailed");
@@ -267,7 +267,7 @@ LLFloaterGetBlockedObjectName::~LLFloaterGetBlockedObjectName()
     gFocusMgr.releaseFocusIfNeeded( this );
 }
 
-BOOL LLFloaterGetBlockedObjectName::postBuild()
+bool LLFloaterGetBlockedObjectName::postBuild()
 {
     getChild<LLButton>("OK")->      setCommitCallback(boost::bind(&LLFloaterGetBlockedObjectName::applyBlocking, this));
     getChild<LLButton>("Cancel")->  setCommitCallback(boost::bind(&LLFloaterGetBlockedObjectName::cancelBlocking, this));
@@ -276,17 +276,17 @@ BOOL LLFloaterGetBlockedObjectName::postBuild()
     return LLFloater::postBuild();
 }
 
-BOOL LLFloaterGetBlockedObjectName::handleKeyHere(KEY key, MASK mask)
+bool LLFloaterGetBlockedObjectName::handleKeyHere(KEY key, MASK mask)
 {
     if (key == KEY_RETURN && mask == MASK_NONE)
     {
         applyBlocking();
-        return TRUE;
+        return true;
     }
     else if (key == KEY_ESCAPE && mask == MASK_NONE)
     {
         cancelBlocking();
-        return TRUE;
+        return true;
     }
 
     return LLFloater::handleKeyHere(key, mask);
diff --git a/indra/newview/llpanelblockedlist.h b/indra/newview/llpanelblockedlist.h
index 59bdd1b6a6..446f3d4bad 100644
--- a/indra/newview/llpanelblockedlist.h
+++ b/indra/newview/llpanelblockedlist.h
@@ -40,9 +40,9 @@ public:
     LLPanelBlockedList();
     ~LLPanelBlockedList(){};
 
-    virtual BOOL postBuild();
-    virtual void draw();
-    virtual void onOpen(const LLSD& key);
+    bool postBuild() override;
+    void draw() override;
+    void onOpen(const LLSD& key) override;
 
     void selectBlocked(const LLUUID& id);
 
@@ -72,7 +72,7 @@ private:
 
     // List commnads
     void onCustomAction(const LLSD& userdata);
-    BOOL isActionChecked(const LLSD& userdata);
+    bool isActionChecked(const LLSD& userdata);
 
     void callbackBlockPicked(const uuid_vec_t& ids, const std::vector<LLAvatarName> names);
     static void callbackBlockByName(const std::string& text);
@@ -92,9 +92,9 @@ class LLFloaterGetBlockedObjectName : public LLFloater
 public:
     typedef boost::function<void (const std::string&)> get_object_name_callback_t;
 
-    virtual BOOL postBuild();
+    bool postBuild() override;
 
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    bool handleKeyHere(KEY key, MASK mask) override;
 
     static LLFloaterGetBlockedObjectName* show(get_object_name_callback_t callback);
 
diff --git a/indra/newview/llpanelclassified.cpp b/indra/newview/llpanelclassified.cpp
index 11d1239459..9fe8f39bd6 100644
--- a/indra/newview/llpanelclassified.cpp
+++ b/indra/newview/llpanelclassified.cpp
@@ -111,7 +111,7 @@ LLPanelClassifiedInfo::~LLPanelClassifiedInfo()
     }
 }
 
-BOOL LLPanelClassifiedInfo::postBuild()
+bool LLPanelClassifiedInfo::postBuild()
 {
     childSetAction("show_on_map_btn", boost::bind(&LLPanelClassifiedInfo::onMapClick, this));
     childSetAction("teleport_btn", boost::bind(&LLPanelClassifiedInfo::onTeleportClick, this));
@@ -125,10 +125,10 @@ BOOL LLPanelClassifiedInfo::postBuild()
     mSnapshotCtrl = getChild<LLTextureCtrl>("classified_snapshot");
     mSnapshotRect = getDefaultSnapshotRect();
 
-    return TRUE;
+    return true;
 }
 
-void LLPanelClassifiedInfo::reshape(S32 width, S32 height, BOOL called_from_parent /* = TRUE */)
+void LLPanelClassifiedInfo::reshape(S32 width, S32 height, bool called_from_parent /* = true */)
 {
     LLPanel::reshape(width, height, called_from_parent);
 
@@ -293,8 +293,8 @@ void LLPanelClassifiedInfo::resetData()
     getChild<LLUICtrl>("auto_renew")->setValue(LLStringUtil::null);
     getChild<LLUICtrl>("creation_date")->setValue(LLStringUtil::null);
     getChild<LLUICtrl>("click_through_text")->setValue(LLStringUtil::null);
-    getChild<LLIconCtrl>("content_type_moderate")->setVisible(FALSE);
-    getChild<LLIconCtrl>("content_type_general")->setVisible(FALSE);
+    getChild<LLIconCtrl>("content_type_moderate")->setVisible(false);
+    getChild<LLIconCtrl>("content_type_general")->setVisible(false);
 }
 
 void LLPanelClassifiedInfo::resetControls()
diff --git a/indra/newview/llpanelclassified.h b/indra/newview/llpanelclassified.h
index 88346df6c3..266b9d222a 100644
--- a/indra/newview/llpanelclassified.h
+++ b/indra/newview/llpanelclassified.h
@@ -49,7 +49,7 @@ public:
 
     /*virtual*/ void onOpen(const LLSD& key);
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     /*virtual*/ void processProperties(void* data, EAvatarProcessorType type);
 
@@ -112,7 +112,7 @@ public:
             const LLVector3d& global_pos,
             const std::string& sim_name);
 
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
 
     /*virtual*/ void draw();
 
diff --git a/indra/newview/llpanelcontents.cpp b/indra/newview/llpanelcontents.cpp
index 489289e814..7b78ad2934 100644
--- a/indra/newview/llpanelcontents.cpp
+++ b/indra/newview/llpanelcontents.cpp
@@ -76,16 +76,16 @@ const char* LLPanelContents::PERMS_GROUP_CONTROL_KEY = "perms_group_control";
 const char* LLPanelContents::PERMS_ANYONE_INTERACT_KEY = "perms_anyone_interact";
 const char* LLPanelContents::PERMS_ANYONE_CONTROL_KEY = "perms_anyone_control";
 
-BOOL LLPanelContents::postBuild()
+bool LLPanelContents::postBuild()
 {
-    setMouseOpaque(FALSE);
+    setMouseOpaque(false);
 
     childSetAction("button new script",&LLPanelContents::onClickNewScript, this);
     childSetAction("button permissions",&LLPanelContents::onClickPermissions, this);
 
     mPanelInventoryObject = getChild<LLPanelObjectInventory>("contents_inventory");
 
-    return TRUE;
+    return true;
 }
 
 LLPanelContents::LLPanelContents()
@@ -105,7 +105,7 @@ void LLPanelContents::getState(LLViewerObject *objectp )
 {
     if( !objectp )
     {
-        getChildView("button new script")->setEnabled(FALSE);
+        getChildView("button new script")->setEnabled(false);
         return;
     }
 
@@ -116,7 +116,7 @@ void LLPanelContents::getState(LLViewerObject *objectp )
     bool editable = gAgent.isGodlike()
                     || (objectp->permModify() && !objectp->isPermanentEnforced()
                            && ( objectp->permYouOwner() || ( !group_id.isNull() && gAgent.isInGroup(group_id) )));  // solves SL-23488
-    BOOL all_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME );
+    bool all_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME );
 
     // Edit script button - ok if object is editable and there's an unambiguous destination for the object.
     getChildView("button new script")->setEnabled(
@@ -131,7 +131,7 @@ void LLPanelContents::getState(LLViewerObject *objectp )
 
 void LLPanelContents::refresh()
 {
-    const BOOL children_ok = TRUE;
+    const bool children_ok = true;
     LLViewerObject* object = LLSelectMgr::getInstance()->getSelection()->getFirstRootObject(children_ok);
 
     getState(object);
@@ -157,7 +157,7 @@ void LLPanelContents::clearContents()
 // static
 void LLPanelContents::onClickNewScript(void *userdata)
 {
-    const BOOL children_ok = TRUE;
+    const bool children_ok = true;
     LLViewerObject* object = LLSelectMgr::getInstance()->getSelection()->getFirstRootObject(children_ok);
     if(object)
     {
@@ -186,7 +186,7 @@ void LLPanelContents::onClickNewScript(void *userdata)
                 LLSaleInfo::DEFAULT,
                 LLInventoryItemFlags::II_FLAGS_NONE,
                 time_corrected());
-        object->saveScript(new_item, TRUE, true);
+        object->saveScript(new_item, true, true);
 
         std::string name = new_item->getName();
 
diff --git a/indra/newview/llpanelcontents.h b/indra/newview/llpanelcontents.h
index 70e9b092cb..748bb76a82 100644
--- a/indra/newview/llpanelcontents.h
+++ b/indra/newview/llpanelcontents.h
@@ -43,7 +43,7 @@ class LLSpinCtrl;
 class LLPanelContents : public LLPanel
 {
 public:
-    virtual BOOL postBuild();
+    virtual bool postBuild();
     LLPanelContents();
     virtual ~LLPanelContents();
 
diff --git a/indra/newview/llpaneleditsky.cpp b/indra/newview/llpaneleditsky.cpp
index 75d1b46e57..5255b3763c 100644
--- a/indra/newview/llpaneleditsky.cpp
+++ b/indra/newview/llpaneleditsky.cpp
@@ -139,7 +139,7 @@ LLPanelSettingsSkyAtmosTab::LLPanelSettingsSkyAtmosTab() :
 }
 
 
-BOOL LLPanelSettingsSkyAtmosTab::postBuild()
+bool LLPanelSettingsSkyAtmosTab::postBuild()
 {
     getChild<LLUICtrl>(FIELD_SKY_AMBIENT_LIGHT)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onAmbientLightChanged(); });
     getChild<LLUICtrl>(FIELD_SKY_BLUE_HORIZON)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onBlueHorizonChanged(); });
@@ -156,11 +156,11 @@ BOOL LLPanelSettingsSkyAtmosTab::postBuild()
     getChild<LLUICtrl>(FIELD_REFLECTION_PROBE_AMBIANCE)->setCommitCallback([this](LLUICtrl*, const LLSD&) { onReflectionProbeAmbianceChanged(); });
     refresh();
 
-    return TRUE;
+    return true;
 }
 
 //virtual
-void LLPanelSettingsSkyAtmosTab::setEnabled(BOOL enabled)
+void LLPanelSettingsSkyAtmosTab::setEnabled(bool enabled)
 {
     LLPanelSettingsSky::setEnabled(enabled);
 
@@ -184,8 +184,8 @@ void LLPanelSettingsSkyAtmosTab::refresh()
 {
     if (!mSkySettings)
     {
-        setAllChildrenEnabled(FALSE);
-        setEnabled(FALSE);
+        setAllChildrenEnabled(false);
+        setEnabled(false);
         return;
     }
 
@@ -357,7 +357,7 @@ LLPanelSettingsSkyCloudTab::LLPanelSettingsSkyCloudTab() :
 {
 }
 
-BOOL LLPanelSettingsSkyCloudTab::postBuild()
+bool LLPanelSettingsSkyCloudTab::postBuild()
 {
     getChild<LLUICtrl>(FIELD_SKY_CLOUD_COLOR)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onCloudColorChanged(); });
     getChild<LLUICtrl>(FIELD_SKY_CLOUD_COVERAGE)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onCloudCoverageChanged(); });
@@ -367,7 +367,7 @@ BOOL LLPanelSettingsSkyCloudTab::postBuild()
     getChild<LLUICtrl>(FIELD_SKY_CLOUD_SCROLL_XY)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onCloudScrollChanged(); });
     getChild<LLTextureCtrl>(FIELD_SKY_CLOUD_MAP)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onCloudMapChanged(); });
     getChild<LLTextureCtrl>(FIELD_SKY_CLOUD_MAP)->setDefaultImageAssetID(LLSettingsSky::GetDefaultCloudNoiseTextureId());
-    getChild<LLTextureCtrl>(FIELD_SKY_CLOUD_MAP)->setAllowNoTexture(TRUE);
+    getChild<LLTextureCtrl>(FIELD_SKY_CLOUD_MAP)->setAllowNoTexture(true);
 
     getChild<LLUICtrl>(FIELD_SKY_CLOUD_DENSITY_X)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onCloudDensityChanged(); });
     getChild<LLUICtrl>(FIELD_SKY_CLOUD_DENSITY_Y)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onCloudDensityChanged(); });
@@ -378,11 +378,11 @@ BOOL LLPanelSettingsSkyCloudTab::postBuild()
 
     refresh();
 
-    return TRUE;
+    return true;
 }
 
 //virtual
-void LLPanelSettingsSkyCloudTab::setEnabled(BOOL enabled)
+void LLPanelSettingsSkyCloudTab::setEnabled(bool enabled)
 {
     LLPanelSettingsSky::setEnabled(enabled);
 
@@ -405,8 +405,8 @@ void LLPanelSettingsSkyCloudTab::refresh()
 {
     if (!mSkySettings)
     {
-        setAllChildrenEnabled(FALSE);
-        setEnabled(FALSE);
+        setAllChildrenEnabled(false);
+        setEnabled(false);
         return;
     }
 
@@ -510,7 +510,7 @@ LLPanelSettingsSkySunMoonTab::LLPanelSettingsSkySunMoonTab() :
 }
 
 
-BOOL LLPanelSettingsSkySunMoonTab::postBuild()
+bool LLPanelSettingsSkySunMoonTab::postBuild()
 {
     getChild<LLUICtrl>(FIELD_SKY_SUN_MOON_COLOR)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onSunMoonColorChanged(); });
     getChild<LLUICtrl>(FIELD_SKY_GLOW_FOCUS)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onGlowChanged(); });
@@ -523,24 +523,24 @@ BOOL LLPanelSettingsSkySunMoonTab::postBuild()
     getChild<LLUICtrl>(FIELD_SKY_SUN_SCALE)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onSunScaleChanged(); });
     getChild<LLTextureCtrl>(FIELD_SKY_SUN_IMAGE)->setBlankImageAssetID(LLSettingsSky::GetBlankSunTextureId());
     getChild<LLTextureCtrl>(FIELD_SKY_SUN_IMAGE)->setDefaultImageAssetID(LLSettingsSky::GetBlankSunTextureId());
-    getChild<LLTextureCtrl>(FIELD_SKY_SUN_IMAGE)->setAllowNoTexture(TRUE);
+    getChild<LLTextureCtrl>(FIELD_SKY_SUN_IMAGE)->setAllowNoTexture(true);
     getChild<LLUICtrl>(FIELD_SKY_MOON_ROTATION)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onMoonRotationChanged(); });
     getChild<LLUICtrl>(FIELD_SKY_MOON_AZIMUTH)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onMoonAzimElevChanged(); });
     getChild<LLUICtrl>(FIELD_SKY_MOON_ELEVATION)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onMoonAzimElevChanged(); });
     getChild<LLUICtrl>(FIELD_SKY_MOON_IMAGE)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onMoonImageChanged(); });
     getChild<LLTextureCtrl>(FIELD_SKY_MOON_IMAGE)->setDefaultImageAssetID(LLSettingsSky::GetDefaultMoonTextureId());
     getChild<LLTextureCtrl>(FIELD_SKY_MOON_IMAGE)->setBlankImageAssetID(LLSettingsSky::GetDefaultMoonTextureId());
-    getChild<LLTextureCtrl>(FIELD_SKY_MOON_IMAGE)->setAllowNoTexture(TRUE);
+    getChild<LLTextureCtrl>(FIELD_SKY_MOON_IMAGE)->setAllowNoTexture(true);
     getChild<LLUICtrl>(FIELD_SKY_MOON_SCALE)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onMoonScaleChanged(); });
     getChild<LLUICtrl>(FIELD_SKY_MOON_BRIGHTNESS)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onMoonBrightnessChanged(); });
 
     refresh();
 
-    return TRUE;
+    return true;
 }
 
 //virtual
-void LLPanelSettingsSkySunMoonTab::setEnabled(BOOL enabled)
+void LLPanelSettingsSkySunMoonTab::setEnabled(bool enabled)
 {
     LLPanelSettingsSky::setEnabled(enabled);
 
@@ -553,8 +553,8 @@ void LLPanelSettingsSkySunMoonTab::setEnabled(BOOL enabled)
         getChild<LLUICtrl>(FIELD_SKY_SUN_SCALE)->setEnabled(enabled);
         getChild<LLUICtrl>(FIELD_SKY_MOON_SCALE)->setEnabled(enabled);
         getChild<LLUICtrl>(FIELD_SKY_MOON_BRIGHTNESS)->setEnabled(enabled);
-        getChildView(PANEL_SKY_SUN_LAYOUT)->setAllChildrenEnabled(TRUE);
-        getChildView(PANEL_SKY_MOON_LAYOUT)->setAllChildrenEnabled(TRUE);
+        getChildView(PANEL_SKY_SUN_LAYOUT)->setAllChildrenEnabled(true);
+        getChildView(PANEL_SKY_MOON_LAYOUT)->setAllChildrenEnabled(true);
     }
 }
 
@@ -562,18 +562,18 @@ void LLPanelSettingsSkySunMoonTab::refresh()
 {
     if (!mSkySettings || !getCanChangeSettings())
     {
-        getChildView(PANEL_SKY_SUN_LAYOUT)->setAllChildrenEnabled(FALSE);
-        getChildView(PANEL_SKY_MOON_LAYOUT)->setAllChildrenEnabled(FALSE);
-        getChildView(FIELD_SKY_SUN_BEACON)->setEnabled(TRUE);
-        getChildView(FIELD_SKY_MOON_BEACON)->setEnabled(TRUE);
+        getChildView(PANEL_SKY_SUN_LAYOUT)->setAllChildrenEnabled(false);
+        getChildView(PANEL_SKY_MOON_LAYOUT)->setAllChildrenEnabled(false);
+        getChildView(FIELD_SKY_SUN_BEACON)->setEnabled(true);
+        getChildView(FIELD_SKY_MOON_BEACON)->setEnabled(true);
 
         if (!mSkySettings)
             return;
     }
     else
     {
-        setEnabled(TRUE);
-        setAllChildrenEnabled(TRUE);
+        setEnabled(true);
+        setAllChildrenEnabled(true);
     }
 
     getChild<LLColorSwatchCtrl>(FIELD_SKY_SUN_MOON_COLOR)->set(mSkySettings->getSunlightColor() / SLIDER_SCALE_SUN_AMBIENT);
@@ -780,7 +780,7 @@ LLPanelSettingsSkyDensityTab::LLPanelSettingsSkyDensityTab()
 {
 }
 
-BOOL LLPanelSettingsSkyDensityTab::postBuild()
+bool LLPanelSettingsSkyDensityTab::postBuild()
 {
     getChild<LLUICtrl>(FIELD_SKY_DENSITY_RAYLEIGH_EXPONENTIAL)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onRayleighExponentialChanged(); });
     getChild<LLUICtrl>(FIELD_SKY_DENSITY_RAYLEIGH_EXPONENTIAL_SCALE)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onRayleighExponentialScaleChanged(); });
@@ -803,10 +803,10 @@ BOOL LLPanelSettingsSkyDensityTab::postBuild()
     getChild<LLUICtrl>(FIELD_SKY_DENSITY_ABSORPTION_MAX_ALTITUDE)->setCommitCallback([this](LLUICtrl *, const LLSD &) { onAbsorptionMaxAltitudeChanged(); });
 
     refresh();
-    return TRUE;
+    return true;
 }
 
-void LLPanelSettingsSkyDensityTab::setEnabled(BOOL enabled)
+void LLPanelSettingsSkyDensityTab::setEnabled(bool enabled)
 {
     LLPanelSettingsSky::setEnabled(enabled);
 
@@ -838,8 +838,8 @@ void LLPanelSettingsSkyDensityTab::refresh()
 {
     if (!mSkySettings)
     {
-        setAllChildrenEnabled(FALSE);
-        setEnabled(FALSE);
+        setAllChildrenEnabled(false);
+        setEnabled(false);
         return;
     }
 
diff --git a/indra/newview/llpaneleditsky.h b/indra/newview/llpaneleditsky.h
index 05cd866f28..bab606bc8e 100644
--- a/indra/newview/llpaneleditsky.h
+++ b/indra/newview/llpaneleditsky.h
@@ -60,8 +60,8 @@ class LLPanelSettingsSkyAtmosTab : public LLPanelSettingsSky
 public:
                             LLPanelSettingsSkyAtmosTab();
 
-    virtual BOOL            postBuild() override;
-    virtual void            setEnabled(BOOL enabled) override;
+    virtual bool            postBuild() override;
+    virtual void            setEnabled(bool enabled) override;
 
 protected:
     virtual void            refresh() override;
@@ -91,8 +91,8 @@ class LLPanelSettingsSkyCloudTab : public LLPanelSettingsSky
 public:
                             LLPanelSettingsSkyCloudTab();
 
-    virtual BOOL            postBuild() override;
-    void                    setEnabled(BOOL enabled) override;
+    virtual bool            postBuild() override;
+    void                    setEnabled(bool enabled) override;
 
 protected:
     virtual void            refresh() override;
@@ -115,8 +115,8 @@ class LLPanelSettingsSkySunMoonTab : public LLPanelSettingsSky
 public:
                             LLPanelSettingsSkySunMoonTab();
 
-    virtual BOOL            postBuild() override;
-    virtual void            setEnabled(BOOL enabled) override;
+    virtual bool            postBuild() override;
+    virtual void            setEnabled(bool enabled) override;
 
 protected:
     virtual void            refresh() override;
@@ -144,8 +144,8 @@ class LLPanelSettingsSkyDensityTab : public LLPanelSettingsSky
 public:
     LLPanelSettingsSkyDensityTab();
 
-    virtual BOOL postBuild() override;
-    virtual void setEnabled(BOOL enabled) override;
+    virtual bool postBuild() override;
+    virtual void setEnabled(bool enabled) override;
 
 protected:
     virtual void refresh() override;
diff --git a/indra/newview/llpaneleditwater.cpp b/indra/newview/llpaneleditwater.cpp
index cf536dd87e..236cb6b97c 100644
--- a/indra/newview/llpaneleditwater.cpp
+++ b/indra/newview/llpaneleditwater.cpp
@@ -76,7 +76,7 @@ LLPanelSettingsWaterMainTab::LLPanelSettingsWaterMainTab():
 }
 
 
-BOOL LLPanelSettingsWaterMainTab::postBuild()
+bool LLPanelSettingsWaterMainTab::postBuild()
 {
     mClrFogColor = getChild<LLColorSwatchCtrl>(FIELD_WATER_FOG_COLOR);
     mTxtNormalMap = getChild<LLTextureCtrl>(FIELD_WATER_NORMAL_MAP);
@@ -106,11 +106,11 @@ BOOL LLPanelSettingsWaterMainTab::postBuild()
 
     refresh();
 
-    return TRUE;
+    return true;
 }
 
 //virtual
-void LLPanelSettingsWaterMainTab::setEnabled(BOOL enabled)
+void LLPanelSettingsWaterMainTab::setEnabled(bool enabled)
 {
     LLPanelSettingsWater::setEnabled(enabled);
     getChild<LLUICtrl>(FIELD_WATER_FOG_DENSITY)->setEnabled(enabled);
@@ -132,8 +132,8 @@ void LLPanelSettingsWaterMainTab::refresh()
 {
     if (!mWaterSettings)
     {
-        setAllChildrenEnabled(FALSE);
-        setEnabled(FALSE);
+        setAllChildrenEnabled(false);
+        setEnabled(false);
         return;
     }
 
diff --git a/indra/newview/llpaneleditwater.h b/indra/newview/llpaneleditwater.h
index f35a5ce2c2..69034789c4 100644
--- a/indra/newview/llpaneleditwater.h
+++ b/indra/newview/llpaneleditwater.h
@@ -65,8 +65,8 @@ class LLPanelSettingsWaterMainTab : public LLPanelSettingsWater
 public:
                             LLPanelSettingsWaterMainTab();
 
-    virtual BOOL            postBuild() override;
-    virtual void            setEnabled(BOOL enabled) override;
+    virtual bool            postBuild() override;
+    virtual void            setEnabled(bool enabled) override;
 
 protected:
     virtual void            refresh() override;
diff --git a/indra/newview/llpaneleditwearable.cpp b/indra/newview/llpaneleditwearable.cpp
index 0c69e68639..a14f1d54a2 100644
--- a/indra/newview/llpaneleditwearable.cpp
+++ b/indra/newview/llpaneleditwearable.cpp
@@ -350,40 +350,40 @@ LLEditWearableDictionary::ColorSwatchCtrls::ColorSwatchCtrls()
 
 LLEditWearableDictionary::TextureCtrls::TextureCtrls()
 {
-        addEntry(TEX_HEAD_BODYPAINT, new PickerControlEntry(TEX_HEAD_BODYPAINT, "Head", LLUUID::null, TRUE));
-        addEntry(TEX_UPPER_BODYPAINT, new PickerControlEntry(TEX_UPPER_BODYPAINT, "Upper Body", LLUUID::null, TRUE));
-        addEntry(TEX_LOWER_BODYPAINT, new PickerControlEntry(TEX_LOWER_BODYPAINT, "Lower Body", LLUUID::null, TRUE));
-        addEntry(TEX_HAIR, new PickerControlEntry(TEX_HAIR, "Texture", LLUUID(gSavedSettings.getString("UIImgDefaultHairUUID")), FALSE));
-        addEntry(TEX_EYES_IRIS, new PickerControlEntry(TEX_EYES_IRIS, "Iris", LLUUID(gSavedSettings.getString("UIImgDefaultEyesUUID")), FALSE));
-        addEntry(TEX_UPPER_SHIRT, new PickerControlEntry(TEX_UPPER_SHIRT, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultShirtUUID")), FALSE));
-        addEntry(TEX_LOWER_PANTS, new PickerControlEntry(TEX_LOWER_PANTS, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultPantsUUID")), FALSE));
-        addEntry(TEX_LOWER_SHOES, new PickerControlEntry(TEX_LOWER_SHOES, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultShoesUUID")), FALSE));
-        addEntry(TEX_LOWER_SOCKS, new PickerControlEntry(TEX_LOWER_SOCKS, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultSocksUUID")), FALSE));
-        addEntry(TEX_UPPER_JACKET, new PickerControlEntry(TEX_UPPER_JACKET, "Upper Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultJacketUUID")), FALSE));
-        addEntry(TEX_LOWER_JACKET, new PickerControlEntry(TEX_LOWER_JACKET, "Lower Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultJacketUUID")), FALSE));
-        addEntry(TEX_SKIRT, new PickerControlEntry(TEX_SKIRT, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultSkirtUUID")), FALSE));
-        addEntry(TEX_UPPER_GLOVES, new PickerControlEntry(TEX_UPPER_GLOVES, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultGlovesUUID")), FALSE));
-        addEntry(TEX_UPPER_UNDERSHIRT, new PickerControlEntry(TEX_UPPER_UNDERSHIRT, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultUnderwearUUID")), FALSE));
-        addEntry(TEX_LOWER_UNDERPANTS, new PickerControlEntry(TEX_LOWER_UNDERPANTS, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultUnderwearUUID")), FALSE));
-        addEntry(TEX_LOWER_ALPHA, new PickerControlEntry(TEX_LOWER_ALPHA, "Lower Alpha", LLUUID(gSavedSettings.getString("UIImgDefaultAlphaUUID")), TRUE));
-        addEntry(TEX_UPPER_ALPHA, new PickerControlEntry(TEX_UPPER_ALPHA, "Upper Alpha", LLUUID(gSavedSettings.getString("UIImgDefaultAlphaUUID")), TRUE));
-        addEntry(TEX_HEAD_ALPHA, new PickerControlEntry(TEX_HEAD_ALPHA, "Head Alpha", LLUUID(gSavedSettings.getString("UIImgDefaultAlphaUUID")), TRUE));
-        addEntry(TEX_EYES_ALPHA, new PickerControlEntry(TEX_EYES_ALPHA, "Eye Alpha", LLUUID(gSavedSettings.getString("UIImgDefaultAlphaUUID")), TRUE));
-        addEntry(TEX_HAIR_ALPHA, new PickerControlEntry(TEX_HAIR_ALPHA, "Hair Alpha", LLUUID(gSavedSettings.getString("UIImgDefaultAlphaUUID")), TRUE));
-        addEntry(TEX_LOWER_TATTOO, new PickerControlEntry(TEX_LOWER_TATTOO, "Lower Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_UPPER_TATTOO, new PickerControlEntry(TEX_UPPER_TATTOO, "Upper Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_HEAD_TATTOO, new PickerControlEntry(TEX_HEAD_TATTOO, "Head Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_LOWER_UNIVERSAL_TATTOO, new PickerControlEntry(TEX_LOWER_UNIVERSAL_TATTOO, "Lower Universal Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_UPPER_UNIVERSAL_TATTOO, new PickerControlEntry(TEX_UPPER_UNIVERSAL_TATTOO, "Upper Universal Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_HEAD_UNIVERSAL_TATTOO, new PickerControlEntry(TEX_HEAD_UNIVERSAL_TATTOO, "Head Universal Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_SKIRT_TATTOO, new PickerControlEntry(TEX_SKIRT_TATTOO, "Skirt Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_HAIR_TATTOO, new PickerControlEntry(TEX_HAIR_TATTOO, "Hair Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_EYES_TATTOO, new PickerControlEntry(TEX_EYES_TATTOO, "Eyes Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_LEFT_ARM_TATTOO, new PickerControlEntry(TEX_LEFT_ARM_TATTOO, "Left Arm Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_LEFT_LEG_TATTOO, new PickerControlEntry(TEX_LEFT_LEG_TATTOO, "Left Leg Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_AUX1_TATTOO, new PickerControlEntry(TEX_AUX1_TATTOO, "Aux1 Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_AUX2_TATTOO, new PickerControlEntry(TEX_AUX2_TATTOO, "Aux2 Tattoo", LLUUID::null, TRUE));
-        addEntry(TEX_AUX3_TATTOO, new PickerControlEntry(TEX_AUX3_TATTOO, "Aux3 Tattoo", LLUUID::null, TRUE));
+        addEntry(TEX_HEAD_BODYPAINT, new PickerControlEntry(TEX_HEAD_BODYPAINT, "Head", LLUUID::null, true));
+        addEntry(TEX_UPPER_BODYPAINT, new PickerControlEntry(TEX_UPPER_BODYPAINT, "Upper Body", LLUUID::null, true));
+        addEntry(TEX_LOWER_BODYPAINT, new PickerControlEntry(TEX_LOWER_BODYPAINT, "Lower Body", LLUUID::null, true));
+        addEntry(TEX_HAIR, new PickerControlEntry(TEX_HAIR, "Texture", LLUUID(gSavedSettings.getString("UIImgDefaultHairUUID")), false));
+        addEntry(TEX_EYES_IRIS, new PickerControlEntry(TEX_EYES_IRIS, "Iris", LLUUID(gSavedSettings.getString("UIImgDefaultEyesUUID")), false));
+        addEntry(TEX_UPPER_SHIRT, new PickerControlEntry(TEX_UPPER_SHIRT, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultShirtUUID")), false));
+        addEntry(TEX_LOWER_PANTS, new PickerControlEntry(TEX_LOWER_PANTS, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultPantsUUID")), false));
+        addEntry(TEX_LOWER_SHOES, new PickerControlEntry(TEX_LOWER_SHOES, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultShoesUUID")), false));
+        addEntry(TEX_LOWER_SOCKS, new PickerControlEntry(TEX_LOWER_SOCKS, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultSocksUUID")), false));
+        addEntry(TEX_UPPER_JACKET, new PickerControlEntry(TEX_UPPER_JACKET, "Upper Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultJacketUUID")), false));
+        addEntry(TEX_LOWER_JACKET, new PickerControlEntry(TEX_LOWER_JACKET, "Lower Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultJacketUUID")), false));
+        addEntry(TEX_SKIRT, new PickerControlEntry(TEX_SKIRT, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultSkirtUUID")), false));
+        addEntry(TEX_UPPER_GLOVES, new PickerControlEntry(TEX_UPPER_GLOVES, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultGlovesUUID")), false));
+        addEntry(TEX_UPPER_UNDERSHIRT, new PickerControlEntry(TEX_UPPER_UNDERSHIRT, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultUnderwearUUID")), false));
+        addEntry(TEX_LOWER_UNDERPANTS, new PickerControlEntry(TEX_LOWER_UNDERPANTS, "Fabric", LLUUID(gSavedSettings.getString("UIImgDefaultUnderwearUUID")), false));
+        addEntry(TEX_LOWER_ALPHA, new PickerControlEntry(TEX_LOWER_ALPHA, "Lower Alpha", LLUUID(gSavedSettings.getString("UIImgDefaultAlphaUUID")), true));
+        addEntry(TEX_UPPER_ALPHA, new PickerControlEntry(TEX_UPPER_ALPHA, "Upper Alpha", LLUUID(gSavedSettings.getString("UIImgDefaultAlphaUUID")), true));
+        addEntry(TEX_HEAD_ALPHA, new PickerControlEntry(TEX_HEAD_ALPHA, "Head Alpha", LLUUID(gSavedSettings.getString("UIImgDefaultAlphaUUID")), true));
+        addEntry(TEX_EYES_ALPHA, new PickerControlEntry(TEX_EYES_ALPHA, "Eye Alpha", LLUUID(gSavedSettings.getString("UIImgDefaultAlphaUUID")), true));
+        addEntry(TEX_HAIR_ALPHA, new PickerControlEntry(TEX_HAIR_ALPHA, "Hair Alpha", LLUUID(gSavedSettings.getString("UIImgDefaultAlphaUUID")), true));
+        addEntry(TEX_LOWER_TATTOO, new PickerControlEntry(TEX_LOWER_TATTOO, "Lower Tattoo", LLUUID::null, true));
+        addEntry(TEX_UPPER_TATTOO, new PickerControlEntry(TEX_UPPER_TATTOO, "Upper Tattoo", LLUUID::null, true));
+        addEntry(TEX_HEAD_TATTOO, new PickerControlEntry(TEX_HEAD_TATTOO, "Head Tattoo", LLUUID::null, true));
+        addEntry(TEX_LOWER_UNIVERSAL_TATTOO, new PickerControlEntry(TEX_LOWER_UNIVERSAL_TATTOO, "Lower Universal Tattoo", LLUUID::null, true));
+        addEntry(TEX_UPPER_UNIVERSAL_TATTOO, new PickerControlEntry(TEX_UPPER_UNIVERSAL_TATTOO, "Upper Universal Tattoo", LLUUID::null, true));
+        addEntry(TEX_HEAD_UNIVERSAL_TATTOO, new PickerControlEntry(TEX_HEAD_UNIVERSAL_TATTOO, "Head Universal Tattoo", LLUUID::null, true));
+        addEntry(TEX_SKIRT_TATTOO, new PickerControlEntry(TEX_SKIRT_TATTOO, "Skirt Tattoo", LLUUID::null, true));
+        addEntry(TEX_HAIR_TATTOO, new PickerControlEntry(TEX_HAIR_TATTOO, "Hair Tattoo", LLUUID::null, true));
+        addEntry(TEX_EYES_TATTOO, new PickerControlEntry(TEX_EYES_TATTOO, "Eyes Tattoo", LLUUID::null, true));
+        addEntry(TEX_LEFT_ARM_TATTOO, new PickerControlEntry(TEX_LEFT_ARM_TATTOO, "Left Arm Tattoo", LLUUID::null, true));
+        addEntry(TEX_LEFT_LEG_TATTOO, new PickerControlEntry(TEX_LEFT_LEG_TATTOO, "Left Leg Tattoo", LLUUID::null, true));
+        addEntry(TEX_AUX1_TATTOO, new PickerControlEntry(TEX_AUX1_TATTOO, "Aux1 Tattoo", LLUUID::null, true));
+        addEntry(TEX_AUX2_TATTOO, new PickerControlEntry(TEX_AUX2_TATTOO, "Aux2 Tattoo", LLUUID::null, true));
+        addEntry(TEX_AUX3_TATTOO, new PickerControlEntry(TEX_AUX3_TATTOO, "Aux3 Tattoo", LLUUID::null, true));
 }
 
 LLEditWearableDictionary::PickerControlEntry::PickerControlEntry(ETextureIndex tex_index,
@@ -657,7 +657,7 @@ bool LLPanelEditWearable::changeHeightUnits(const LLSD& new_value)
         return true;
 }
 
-void LLPanelEditWearable::updateMetricLayout(BOOL new_value)
+void LLPanelEditWearable::updateMetricLayout(bool new_value)
 {
         LLUIString current_metric, replacment_metric;
         current_metric = new_value ? mMeters : mFeet;
@@ -710,7 +710,7 @@ void LLPanelEditWearable::setWearablePanelVisibilityChangeCallback(LLPanel* body
 }
 
 // virtual
-BOOL LLPanelEditWearable::postBuild()
+bool LLPanelEditWearable::postBuild()
 {
         // buttons
         mBtnRevert = getChild<LLButton>("revert_button");
@@ -825,20 +825,20 @@ BOOL LLPanelEditWearable::postBuild()
         gSavedSettings.getControl("HeightUnits")->getSignal()->connect(boost::bind(&LLPanelEditWearable::changeHeightUnits, this, _2));
         updateMetricLayout(gSavedSettings.getBOOL("HeightUnits"));
 
-        return TRUE;
+        return true;
 }
 
 // virtual
 // LLUICtrl
-BOOL LLPanelEditWearable::isDirty() const
+bool LLPanelEditWearable::isDirty() const
 {
-        BOOL isDirty = FALSE;
+        bool isDirty = false;
         if (mWearablePtr)
         {
                 if (mWearablePtr->isDirty() ||
                         (mWearableItem && mNameEditor && mWearableItem->getName().compare(mNameEditor->getText()) != 0))
                 {
-                        isDirty = TRUE;
+                        isDirty = true;
                 }
         }
         return isDirty;
@@ -864,20 +864,20 @@ void LLPanelEditWearable::onClose()
         revertChanges();
 }
 
-void LLPanelEditWearable::setVisible(BOOL visible)
+void LLPanelEditWearable::setVisible(bool visible)
 {
         if (!visible)
         {
-                showWearable(mWearablePtr, FALSE);
+                showWearable(mWearablePtr, false);
         }
         LLPanel::setVisible(visible);
 }
 
-void LLPanelEditWearable::setWearable(LLViewerWearable *wearable, BOOL disable_camera_switch)
+void LLPanelEditWearable::setWearable(LLViewerWearable *wearable, bool disable_camera_switch)
 {
-        showWearable(mWearablePtr, FALSE, disable_camera_switch);
+        showWearable(mWearablePtr, false, disable_camera_switch);
         mWearablePtr = wearable;
-        showWearable(mWearablePtr, TRUE, disable_camera_switch);
+        showWearable(mWearablePtr, true, disable_camera_switch);
 }
 
 //static
@@ -952,7 +952,7 @@ void LLPanelEditWearable::onCommitSexChange()
         gAgentAvatarp->updateSexDependentLayerSets();
 
         gAgentAvatarp->updateVisualParams();
-        showWearable(mWearablePtr, TRUE, TRUE);
+        showWearable(mWearablePtr, true, true);
         updateScrollingPanelUI();
 }
 
@@ -984,7 +984,7 @@ void LLPanelEditWearable::onTexturePickerCommit(const LLUICtrl* ctrl)
                                 U32 index;
                                 if (gAgentWearables.getWearableIndex(getWearable(), index))
                                 {
-                                        gAgentAvatarp->setLocalTexture(entry->mTextureIndex, image, FALSE, index);
+                                        gAgentAvatarp->setLocalTexture(entry->mTextureIndex, image, false, index);
                                         LLVisualParamHint::requestHintUpdates();
                                         gAgentAvatarp->wearableUpdated(type);
                                 }
@@ -1096,7 +1096,7 @@ void LLPanelEditWearable::saveChanges(bool force_save_as)
         {
                 // the name of the wearable has changed, re-save wearable with new name
                 LLAppearanceMgr::instance().removeCOFItemLinks(mWearablePtr->getItemID(), gAgentAvatarp->mEndCustomizeCallback);
-                gAgentWearables.saveWearableAs(mWearablePtr->getType(), index, new_name, description, FALSE);
+                gAgentWearables.saveWearableAs(mWearablePtr->getType(), index, new_name, description, false);
                 mNameEditor->setText(mWearableItem->getName());
         }
         else
@@ -1138,7 +1138,7 @@ void LLPanelEditWearable::revertChanges()
         gAgentAvatarp->wearableUpdated(mWearablePtr->getType());
 }
 
-void LLPanelEditWearable::showWearable(LLViewerWearable* wearable, BOOL show, BOOL disable_camera_switch)
+void LLPanelEditWearable::showWearable(LLViewerWearable* wearable, bool show, bool disable_camera_switch)
 {
         if (!wearable)
         {
@@ -1220,12 +1220,12 @@ void LLPanelEditWearable::showWearable(LLViewerWearable* wearable, BOOL show, BO
                         // Don't show female subparts if you're not female, etc.
                         if (!(gAgentAvatarp->getSex() & subpart_entry->mSex))
                         {
-                                tab->setVisible(FALSE);
+                                tab->setVisible(false);
                                 continue;
                         }
                         else
                         {
-                                tab->setVisible(TRUE);
+                                tab->setVisible(true);
                         }
 
                         // what edit group do we want to extract params for?
@@ -1314,7 +1314,7 @@ void LLPanelEditWearable::changeCamera(U8 subpart)
         if (gSavedSettings.getBOOL("AppearanceCameraMovement"))
         {
                 // Unlock focus from avatar but don't stop animation to not interrupt ANIM_AGENT_CUSTOMIZE
-                gAgentCamera.setFocusOnAvatar(FALSE, gAgentCamera.getCameraAnimating());
+                gAgentCamera.setFocusOnAvatar(false, gAgentCamera.getCameraAnimating());
                 gMorphView->updateCamera();
         }
 }
@@ -1344,7 +1344,7 @@ void LLPanelEditWearable::updateTypeSpecificControls(LLWearableType::EType type)
         {
                 // Update avatar height
                 F32 new_size = gAgentAvatarp->mBodySize.mV[VZ];
-                if (gSavedSettings.getBOOL("HeightUnits") == FALSE)
+                if (!gSavedSettings.getBOOL("HeightUnits"))
                 {
                         // convert meters to feet
                         new_size = new_size / ONE_FOOT;
@@ -1402,7 +1402,7 @@ void LLPanelEditWearable::updateScrollingPanelUI()
                                 continue;
                         }
 
-                        panel_list->updatePanels(TRUE);
+                        panel_list->updatePanels(true);
                 }
         }
 }
@@ -1511,11 +1511,11 @@ void LLPanelEditWearable::buildParamList(LLScrollingPanelList *panel_list, value
                         LLScrollingPanelParamBase *panel_param = NULL;
                         if (wearable && wearable->getType() == LLWearableType::WT_PHYSICS) // Hack to show a different panel for physics.  Should generalize this later.
                         {
-                                panel_param = new LLScrollingPanelParamBase( p, NULL, (*it).second, TRUE, this->getWearable(), jointp);
+                                panel_param = new LLScrollingPanelParamBase( p, NULL, (*it).second, true, this->getWearable(), jointp);
                         }
                         else
                         {
-                                panel_param = new LLScrollingPanelParam( p, NULL, (*it).second, TRUE, this->getWearable(), jointp);
+                                panel_param = new LLScrollingPanelParam( p, NULL, (*it).second, true, this->getWearable(), jointp);
                         }
                         panel_list->addPanel( panel_param );
                 }
@@ -1531,7 +1531,7 @@ void LLPanelEditWearable::updateVerbs()
                 can_copy = mWearableItem->getPermissions().allowCopyBy(gAgentID);
         }
 
-        BOOL is_dirty = isDirty();
+        bool is_dirty = isDirty();
 
         mBtnRevert->setEnabled(is_dirty);
         getChildView("save_as_button")->setEnabled(is_dirty && can_copy);
@@ -1544,7 +1544,7 @@ void LLPanelEditWearable::updateVerbs()
         }
 
         // update back button and title according to dirty state.
-        static BOOL was_dirty = FALSE;
+        static bool was_dirty = false;
         if (was_dirty != is_dirty) // to avoid redundant changes because this method is called from draw
         {
                 static S32 label_width = mBtnBack->getFont()->getWidth(mBackBtnLabel);
@@ -1598,7 +1598,7 @@ void LLPanelEditWearable::onInvisibilityCommit(LLCheckBoxCtrl* checkbox_ctrl, LL
                 mPreviousAlphaTexture[te] = lto->getID();
 
                 LLViewerFetchedTexture* image = LLViewerTextureManager::getFetchedTexture( IMG_INVISIBLE );
-                gAgentAvatarp->setLocalTexture(te, image, FALSE, index);
+                gAgentAvatarp->setLocalTexture(te, image, false, index);
                 gAgentAvatarp->wearableUpdated(getWearable()->getType());
         }
         else
@@ -1620,7 +1620,7 @@ void LLPanelEditWearable::onInvisibilityCommit(LLCheckBoxCtrl* checkbox_ctrl, LL
                         return;
                 }
 
-                gAgentAvatarp->setLocalTexture(te, image, FALSE, index);
+                gAgentAvatarp->setLocalTexture(te, image, false, index);
                 gAgentAvatarp->wearableUpdated(getWearable()->getType());
         }
 
@@ -1667,8 +1667,8 @@ public:
 
         bool handle(const LLSD& params, const LLSD& query_map, const std::string& grid, LLMediaCtrl* web)
         {
-                // change height units TRUE for meters and FALSE for feet
-                BOOL new_value = (gSavedSettings.getBOOL("HeightUnits") == FALSE) ? TRUE : FALSE;
+                // change height units true for meters and false for feet
+                bool new_value = !gSavedSettings.getBOOL("HeightUnits");
                 gSavedSettings.setBOOL("HeightUnits", new_value);
                 return true;
         }
diff --git a/indra/newview/llpaneleditwearable.h b/indra/newview/llpaneleditwearable.h
index 56bc64cc7d..aa4ac915c7 100644
--- a/indra/newview/llpaneleditwearable.h
+++ b/indra/newview/llpaneleditwearable.h
@@ -51,8 +51,8 @@ public:
     LLPanelEditWearable( );
     virtual ~LLPanelEditWearable();
 
-    /*virtual*/ BOOL        postBuild();
-    /*virtual*/ BOOL        isDirty() const;    // LLUICtrl
+    /*virtual*/ bool        postBuild();
+    /*virtual*/ bool        isDirty() const;    // LLUICtrl
     /*virtual*/ void        draw();
                 void        onClose();
 
@@ -60,7 +60,7 @@ public:
     void                changeCamera(U8 subpart);
 
     LLViewerWearable*   getWearable() { return mWearablePtr; }
-    void                setWearable(LLViewerWearable *wearable, BOOL disable_camera_switch = FALSE);
+    void                setWearable(LLViewerWearable *wearable, bool disable_camera_switch = false);
 
     void                saveChanges(bool force_save_as = false);
     void                revertChanges();
@@ -76,12 +76,12 @@ public:
     void                onSaveAsButtonClicked();
     void                saveAsCallback(const LLSD& notification, const LLSD& response);
 
-    virtual void        setVisible(BOOL visible);
+    virtual void        setVisible(bool visible);
 
 private:
     typedef std::map<F32, LLViewerVisualParam*> value_map_t;
 
-    void                showWearable(LLViewerWearable* wearable, BOOL show, BOOL disable_camera_switch = FALSE);
+    void                showWearable(LLViewerWearable* wearable, bool show, bool disable_camera_switch = false);
     void                updateScrollingPanelUI();
     LLPanel*            getPanel(LLWearableType::EType type);
     void                getSortedParams(value_map_t &sorted_params, const std::string &edit_group);
@@ -106,7 +106,7 @@ private:
     bool changeHeightUnits(const LLSD& new_value);
 
     // updates current metric and replacement metric label text
-    void updateMetricLayout(BOOL new_value);
+    void updateMetricLayout(bool new_value);
 
     // updates avatar height label
     void updateAvatarHeightLabel();
diff --git a/indra/newview/llpanelemojicomplete.cpp b/indra/newview/llpanelemojicomplete.cpp
index c7c0627009..9814745bc7 100644
--- a/indra/newview/llpanelemojicomplete.cpp
+++ b/indra/newview/llpanelemojicomplete.cpp
@@ -1,4 +1,4 @@
-/**
+/**
 * @file llpanelemojicomplete.h
 * @brief Header file for LLPanelEmojiComplete
 *
@@ -97,13 +97,13 @@ void LLPanelEmojiComplete::draw()
         if (mVertical)
         {
             x = mRenderRect.mLeft;
-            y = mRenderRect.mTop - (mCurSelected - firstVisibleIdx + 1) * mEmojiHeight;
+            y = mRenderRect.mTop - static_cast<S32>(mCurSelected - firstVisibleIdx + 1) * mEmojiHeight;
             width = mRenderRect.getWidth();
             height = mEmojiHeight;
         }
         else
         {
-            x = mRenderRect.mLeft + (mCurSelected - firstVisibleIdx) * mEmojiWidth;
+            x = mRenderRect.mLeft + static_cast<S32>(mCurSelected - firstVisibleIdx) * mEmojiWidth;
             y = mRenderRect.mBottom;
             width = mEmojiWidth;
             height = mRenderRect.getHeight();
@@ -116,7 +116,7 @@ void LLPanelEmojiComplete::draw()
     F32 textLeft = mVertical ? mRenderRect.mLeft + mEmojiWidth + mPadding : 0;
     F32 textWidth = mVertical ? getRect().getWidth() - textLeft - mPadding : 0;
 
-    for (U32 curIdx = firstVisibleIdx; curIdx < lastVisibleIdx; curIdx++)
+    for (size_t curIdx = firstVisibleIdx; curIdx < lastVisibleIdx; curIdx++)
     {
         LLWString text(1, mEmojis[curIdx].Character);
         mIconFont->render(text, 0, iconCenterX, iconCenterY,
@@ -132,7 +132,7 @@ void LLPanelEmojiComplete::draw()
                 std::string text = shortCode.substr(0, mEmojis[curIdx].Begin);
                 mTextFont->renderUTF8(text, 0, x0, iconCenterY, LLColor4::white,
                     LLFontGL::LEFT, LLFontGL::VCENTER, LLFontGL::NORMAL, LLFontGL::NO_SHADOW,
-                    text.size(), x1);
+                    static_cast<S32>(text.size()), x1);
                 x0 += mTextFont->getWidthF32(text);
                 x1 = textLeft + textWidth - x0;
             }
@@ -141,7 +141,7 @@ void LLPanelEmojiComplete::draw()
                 std::string text = shortCode.substr(mEmojis[curIdx].Begin, mEmojis[curIdx].End - mEmojis[curIdx].Begin);
                 mTextFont->renderUTF8(text, 0, x0, iconCenterY, LLColor4::yellow6,
                     LLFontGL::LEFT, LLFontGL::VCENTER, LLFontGL::NORMAL, LLFontGL::NO_SHADOW,
-                    text.size(), x1);
+                    static_cast<S32>(text.size()), x1);
                 x0 += mTextFont->getWidthF32(text);
                 x1 = textLeft + textWidth - x0;
             }
@@ -150,7 +150,7 @@ void LLPanelEmojiComplete::draw()
                 std::string text = shortCode.substr(mEmojis[curIdx].End);
                 mTextFont->renderUTF8(text, 0, x0, iconCenterY, LLColor4::white,
                     LLFontGL::LEFT, LLFontGL::VCENTER, LLFontGL::NORMAL, LLFontGL::NO_SHADOW,
-                    text.size(), x1);
+                    static_cast<S32>(text.size()), x1);
             }
             iconCenterY -= mEmojiHeight;
         }
@@ -161,10 +161,10 @@ void LLPanelEmojiComplete::draw()
     }
 }
 
-BOOL LLPanelEmojiComplete::handleHover(S32 x, S32 y, MASK mask)
+bool LLPanelEmojiComplete::handleHover(S32 x, S32 y, MASK mask)
 {
     if (mScrollbar && mScrollbar->getVisible() && childrenHandleHover(x, y, mask))
-        return TRUE;
+        return true;
 
     LLVector2 curHover(x, y);
     if ((mLastHover - curHover).lengthSquared() > MIN_MOUSE_MOVE_DELTA)
@@ -175,10 +175,10 @@ BOOL LLPanelEmojiComplete::handleHover(S32 x, S32 y, MASK mask)
         mLastHover = curHover;
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLPanelEmojiComplete::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLPanelEmojiComplete::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
     bool handled = false;
     if (mTotalEmojis && MASK_NONE == mask)
@@ -226,43 +226,43 @@ BOOL LLPanelEmojiComplete::handleKey(KEY key, MASK mask, BOOL called_from_parent
 
     if (handled)
     {
-        return TRUE;
+        return true;
     }
 
     return LLUICtrl::handleKey(key, mask, called_from_parent);
 }
 
-BOOL LLPanelEmojiComplete::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLPanelEmojiComplete::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (mScrollbar && mScrollbar->getVisible() && childrenHandleMouseDown(x, y, mask))
-        return TRUE;
+        return true;
 
     mCurSelected = posToIndex(x, y);
     mLastHover = LLVector2(x, y);
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLPanelEmojiComplete::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLPanelEmojiComplete::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if (mScrollbar && mScrollbar->getVisible() && childrenHandleMouseUp(x, y, mask))
-        return TRUE;
+        return true;
 
     mCurSelected = posToIndex(x, y);
     onCommit();
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLPanelEmojiComplete::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLPanelEmojiComplete::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if (mNoScroll)
-        return FALSE;
+        return false;
 
     if (mScrollbar && mScrollbar->getVisible() && mScrollbar->handleScrollWheel(x, y, clicks))
     {
         mCurSelected = posToIndex(x, y);
-        return TRUE;
+        return true;
     }
 
     if (mTotalEmojis > mVisibleEmojis)
@@ -273,10 +273,10 @@ BOOL LLPanelEmojiComplete::handleScrollWheel(S32 x, S32 y, S32 clicks)
         S32 newScrollPos = llmax(0, (S32)mScrollPos + clicks);
         mScrollPos = llclamp<size_t>((size_t)newScrollPos, 0, mTotalEmojis - mVisibleEmojis);
         mCurSelected = posToIndex(x, y);
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLPanelEmojiComplete::onCommit()
@@ -289,7 +289,7 @@ void LLPanelEmojiComplete::onCommit()
     }
 }
 
-void LLPanelEmojiComplete::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLPanelEmojiComplete::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLUICtrl::reshape(width, height, called_from_parent);
     if (mAutoSize)
@@ -352,7 +352,7 @@ U32 LLPanelEmojiComplete::getMaxShortCodeWidth() const
     U32 max_width = 0;
     for (const LLEmojiSearchResult& result : mEmojis)
     {
-        S32 width = mTextFont->getWidth(result.String);
+        U32 width = mTextFont->getWidth(result.String);
         if (width > max_width)
         {
             max_width = width;
@@ -376,11 +376,11 @@ void LLPanelEmojiComplete::onEmojisChanged()
             {
                 width += mScrollbar->getThickness();
             }
-            height = mVisibleEmojis * mEmojiHeight;
+            height = static_cast<S32>(mVisibleEmojis) * mEmojiHeight;
         }
         else
         {
-            width = mVisibleEmojis * mEmojiWidth;
+            width = static_cast<S32>(mVisibleEmojis) * mEmojiWidth;
             height = getRect().getHeight();
         }
         LLUICtrl::reshape(width, height, false);
@@ -448,21 +448,21 @@ void LLPanelEmojiComplete::updateConstraints()
         if (!mNoScroll && mVisibleEmojis < mTotalEmojis)
         {
             mRenderRect.mRight -= mScrollbar->getThickness();
-            mScrollbar->setDocSize(mTotalEmojis);
-            mScrollbar->setPageSize(mVisibleEmojis);
+            mScrollbar->setDocSize(static_cast<S32>(mTotalEmojis));
+            mScrollbar->setPageSize(static_cast<S32>(mVisibleEmojis));
             mScrollbar->setOrigin(mRenderRect.mRight, 0);
-            mScrollbar->reshape(mScrollbar->getThickness(), mRenderRect.mTop, TRUE);
-            mScrollbar->setVisible(TRUE);
+            mScrollbar->reshape(mScrollbar->getThickness(), mRenderRect.mTop, true);
+            mScrollbar->setVisible(true);
         }
         else
         {
-            mScrollbar->setVisible(FALSE);
+            mScrollbar->setVisible(false);
         }
     }
     else
     {
         mEmojiHeight = mRenderRect.getHeight();
-        mRenderRect.stretch((mRenderRect.getWidth() - mVisibleEmojis * mEmojiWidth) / -2, 0);
+        mRenderRect.stretch((mRenderRect.getWidth() - static_cast<S32>(mVisibleEmojis) * mEmojiWidth) / -2, 0);
     }
 
     updateScrollPos();
@@ -489,7 +489,7 @@ void LLPanelEmojiComplete::updateScrollPos()
 
     if (mScrollbar && mScrollbar->getVisible())
     {
-        mScrollbar->setDocPos(mScrollPos);
+        mScrollbar->setDocPos(static_cast<S32>(mScrollPos));
     }
 }
 
@@ -507,7 +507,7 @@ LLFloaterEmojiComplete::LLFloaterEmojiComplete(const LLSD& sdKey)
     setIsChrome(true);
 }
 
-BOOL LLFloaterEmojiComplete::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLFloaterEmojiComplete::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
     bool handled = false;
     if (MASK_NONE == mask)
@@ -522,7 +522,7 @@ BOOL LLFloaterEmojiComplete::handleKey(KEY key, MASK mask, BOOL called_from_pare
     }
 
     if (handled)
-        return TRUE;
+        return true;
 
     return LLFloater::handleKey(key, mask, called_from_parent);
 }
@@ -545,10 +545,10 @@ void LLFloaterEmojiComplete::onOpen(const LLSD& key)
         setRect(outer_rect);
     }
 
-    gFloaterView->adjustToFitScreen(this, FALSE);
+    gFloaterView->adjustToFitScreen(this, false);
 }
 
-BOOL LLFloaterEmojiComplete::postBuild()
+bool LLFloaterEmojiComplete::postBuild()
 {
     mEmojiCtrl = findChild<LLPanelEmojiComplete>("emoji_complete_ctrl");
     mEmojiCtrl->setCommitCallback(
@@ -564,7 +564,7 @@ BOOL LLFloaterEmojiComplete::postBuild()
     return LLFloater::postBuild();
 }
 
-void LLFloaterEmojiComplete::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLFloaterEmojiComplete::reshape(S32 width, S32 height, bool called_from_parent)
 {
     if (called_from_parent)
     {
diff --git a/indra/newview/llpanelemojicomplete.h b/indra/newview/llpanelemojicomplete.h
index 36a965202e..3dfcc98a39 100644
--- a/indra/newview/llpanelemojicomplete.h
+++ b/indra/newview/llpanelemojicomplete.h
@@ -60,13 +60,13 @@ public:
     virtual ~LLPanelEmojiComplete();
 
     void draw() override;
-    BOOL handleHover(S32 x, S32 y, MASK mask) override;
-    BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent) override;
-    BOOL handleMouseDown(S32 x, S32 y, MASK mask) override;
-    BOOL handleMouseUp(S32 x, S32 y, MASK mask) override;
-    BOOL handleScrollWheel(S32 x, S32 y, S32 clicks) override;
+    bool handleHover(S32 x, S32 y, MASK mask) override;
+    bool handleKey(KEY key, MASK mask, bool called_from_parent) override;
+    bool handleMouseDown(S32 x, S32 y, MASK mask) override;
+    bool handleMouseUp(S32 x, S32 y, MASK mask) override;
+    bool handleScrollWheel(S32 x, S32 y, S32 clicks) override;
     void onCommit() override;
-    void reshape(S32 width, S32 height, BOOL called_from_parent) override;
+    void reshape(S32 width, S32 height, bool called_from_parent) override;
 
 public:
     size_t getEmojiCount() const { return mEmojis.size(); }
@@ -118,10 +118,10 @@ public:
     LLFloaterEmojiComplete(const LLSD& sdKey);
 
 public:
-    BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent) override;
+    bool handleKey(KEY key, MASK mask, bool called_from_parent) override;
     void onOpen(const LLSD& key) override;
-    BOOL postBuild() override;
-    void reshape(S32 width, S32 height, BOOL called_from_parent) override;
+    bool postBuild() override;
+    void reshape(S32 width, S32 height, bool called_from_parent) override;
 
 protected:
     LLPanelEmojiComplete* mEmojiCtrl = nullptr;
diff --git a/indra/newview/llpanelenvironment.cpp b/indra/newview/llpanelenvironment.cpp
index 5f9ff2c5ad..43612865fc 100644
--- a/indra/newview/llpanelenvironment.cpp
+++ b/indra/newview/llpanelenvironment.cpp
@@ -165,7 +165,7 @@ LLPanelEnvironmentInfo::~LLPanelEnvironmentInfo()
         mUpdateConnection.disconnect();
 }
 
-BOOL LLPanelEnvironmentInfo::postBuild()
+bool LLPanelEnvironmentInfo::postBuild()
 {
 
     getChild<LLUICtrl>(BTN_USEDEFAULT)->setCommitCallback([this](LLUICtrl *, const LLSD &){ onBtnDefault(); });
@@ -198,7 +198,7 @@ BOOL LLPanelEnvironmentInfo::postBuild()
     getChild<LLSettingsDropTarget>("sdt_" + alt_prefixes[3])->setPanel(this, alt_prefixes[3]);
     getChild<LLSettingsDropTarget>("sdt_" + alt_prefixes[4])->setPanel(this, alt_prefixes[4]);
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -208,7 +208,7 @@ void LLPanelEnvironmentInfo::onOpen(const LLSD& key)
 }
 
 // virtual
-void LLPanelEnvironmentInfo::onVisibilityChange(BOOL new_visibility)
+void LLPanelEnvironmentInfo::onVisibilityChange(bool new_visibility)
 {
     if (new_visibility)
     {
@@ -339,7 +339,7 @@ void LLPanelEnvironmentInfo::refreshFromEstate()
         refresh();
 }
 
-std::string LLPanelEnvironmentInfo::getNameForTrackIndex(S32 index)
+std::string LLPanelEnvironmentInfo::getNameForTrackIndex(U32 index)
 {
     std::string invname;
     if (!mCurrentEnvironment || index < LLSettingsDay::TRACK_WATER || index >= LLSettingsDay::TRACK_MAX)
@@ -871,7 +871,7 @@ void LLPanelEnvironmentInfo::onBtnSelect()
         picker->setSettingsFilter(LLSettingsType::ST_NONE);
         picker->setSettingsItemId(item_id);
         picker->openFloater();
-        picker->setFocus(TRUE);
+        picker->setFocus(true);
     }
 }
 
@@ -1133,17 +1133,17 @@ LLSettingsDropTarget::LLSettingsDropTarget(const LLSettingsDropTarget::Params& p
     : LLView(p), mEnvironmentInfoPanel(NULL), mDndEnabled(false)
 {}
 
-BOOL LLSettingsDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLSettingsDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
     EDragAndDropType cargo_type,
     void* cargo_data,
     EAcceptance* accept,
     std::string& tooltip_msg)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (getParent() && mDndEnabled)
     {
-        handled = TRUE;
+        handled = true;
 
         switch (cargo_type)
         {
diff --git a/indra/newview/llpanelenvironment.h b/indra/newview/llpanelenvironment.h
index 41c89bdf5a..b478142987 100644
--- a/indra/newview/llpanelenvironment.h
+++ b/indra/newview/llpanelenvironment.h
@@ -47,11 +47,11 @@ public:
                                 LLPanelEnvironmentInfo();
     virtual                     ~LLPanelEnvironmentInfo();
 
-    virtual BOOL                postBuild() override;
+    virtual bool                postBuild() override;
     virtual void                onOpen(const LLSD& key) override;
 
-    virtual BOOL                isDirty() const override            { return getIsDirty(); }
-    virtual void                onVisibilityChange(BOOL new_visibility) override;
+    virtual bool                isDirty() const override            { return getIsDirty(); }
+    virtual void                onVisibilityChange(bool new_visibility) override;
 
     virtual void                refresh() override;
 
@@ -136,7 +136,7 @@ protected:
     virtual bool                isLargeEnough() = 0;
     virtual void                refreshFromSource() = 0;
 
-    std::string                 getNameForTrackIndex(S32 index);
+    std::string                 getNameForTrackIndex(U32 index);
 
     LLFloaterSettingsPicker *   getSettingsPicker(bool create = true);
     LLFloaterEditExtDayCycle *  getEditFloater(bool create = true);
@@ -206,7 +206,7 @@ public:
     LLSettingsDropTarget(const Params&);
     ~LLSettingsDropTarget() {};
 
-    virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    virtual bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
         EDragAndDropType cargo_type,
         void* cargo_data,
         EAcceptance* accept,
diff --git a/indra/newview/llpanelexperiencelisteditor.cpp b/indra/newview/llpanelexperiencelisteditor.cpp
index fd5678e446..01c8e88370 100644
--- a/indra/newview/llpanelexperiencelisteditor.cpp
+++ b/indra/newview/llpanelexperiencelisteditor.cpp
@@ -54,7 +54,7 @@ LLPanelExperienceListEditor::LLPanelExperienceListEditor()
 {
 }
 
-BOOL LLPanelExperienceListEditor::postBuild()
+bool LLPanelExperienceListEditor::postBuild()
 {
     mItems = getChild<LLNameListCtrl>("experience_list");
     mAdd = getChild<LLButton>("btn_add");
@@ -68,7 +68,7 @@ BOOL LLPanelExperienceListEditor::postBuild()
     mItems->setCommitCallback(boost::bind(&LLPanelExperienceListEditor::checkButtonsEnabled, this));
 
     checkButtonsEnabled();
-    return TRUE;
+    return true;
 }
 
 const uuid_list_t& LLPanelExperienceListEditor::getExperienceIds() const
@@ -118,7 +118,7 @@ void LLPanelExperienceListEditor::onAdd()
 
     mKey.generateNewID();
 
-    LLFloaterExperiencePicker* picker=LLFloaterExperiencePicker::show(boost::bind(&LLPanelExperienceListEditor::addExperienceIds, this, _1), mKey, FALSE, TRUE, mFilters, mAdd);
+    LLFloaterExperiencePicker* picker=LLFloaterExperiencePicker::show(boost::bind(&LLPanelExperienceListEditor::addExperienceIds, this, _1), mKey, false, true, mFilters, mAdd);
     mPicker = picker->getDerivedHandle<LLFloaterExperiencePicker>();
 }
 
diff --git a/indra/newview/llpanelexperiencelisteditor.h b/indra/newview/llpanelexperiencelisteditor.h
index d2e72e7f19..7ff1ddac5a 100644
--- a/indra/newview/llpanelexperiencelisteditor.h
+++ b/indra/newview/llpanelexperiencelisteditor.h
@@ -47,7 +47,7 @@ public:
     typedef LLHandle<LLFloaterExperiencePicker> PickerHandle;
     LLPanelExperienceListEditor();
     ~LLPanelExperienceListEditor();
-    BOOL postBuild();
+    bool postBuild();
 
     void loading();
 
diff --git a/indra/newview/llpanelexperiencelog.cpp b/indra/newview/llpanelexperiencelog.cpp
index b4ca76c4b1..24c9d7dced 100644
--- a/indra/newview/llpanelexperiencelog.cpp
+++ b/indra/newview/llpanelexperiencelog.cpp
@@ -54,7 +54,7 @@ LLPanelExperienceLog::LLPanelExperienceLog(  )
     buildFromFile("panel_experience_log.xml");
 }
 
-BOOL LLPanelExperienceLog::postBuild( void )
+bool LLPanelExperienceLog::postBuild()
 {
     LLExperienceLog* log = LLExperienceLog::getInstance();
     mEventList = getChild<LLScrollListCtrl>("experience_log_list");
@@ -82,7 +82,7 @@ BOOL LLPanelExperienceLog::postBuild( void )
     mPageSize = log->getPageSize();
     refresh();
     mNewEvent = LLExperienceLog::instance().addUpdateSignal(boost::bind(&LLPanelExperienceLog::refresh, this));
-    return TRUE;
+    return true;
 }
 
 LLPanelExperienceLog* LLPanelExperienceLog::create()
@@ -102,14 +102,14 @@ void LLPanelExperienceLog::refresh()
         return;
     }
 
-    setAllChildrenEnabled(FALSE);
+    setAllChildrenEnabled(false);
 
     LLSD item;
     bool waiting = false;
     LLUUID waiting_id;
 
-    int itemsToSkip = mPageSize*mCurrentPage;
-    int items = 0;
+    unsigned int itemsToSkip = mPageSize*mCurrentPage;
+    unsigned int items = 0;
     bool moreItems = false;
     LLSD events_to_save = events;
     if (events.isMap() && events.size() != 0)
@@ -126,7 +126,7 @@ void LLPanelExperienceLog::refresh()
                 events_to_save.erase(day->first);
                 continue;
             }
-            int size = dayArray.size();
+            unsigned int size = static_cast<unsigned int>(dayArray.size());
             if(itemsToSkip > size)
             {
                 itemsToSkip -= size;
@@ -137,7 +137,7 @@ void LLPanelExperienceLog::refresh()
                 moreItems = true;
                 break;
             }
-            for(int i = dayArray.size() - itemsToSkip - 1; i >= 0; i--)
+            for(int i = static_cast<int>(dayArray.size()) - itemsToSkip - 1; i >= 0; i--)
             {
                 if(items >= mPageSize)
                 {
@@ -179,9 +179,9 @@ void LLPanelExperienceLog::refresh()
     }
     else
     {
-        setAllChildrenEnabled(TRUE);
+        setAllChildrenEnabled(true);
 
-        mEventList->setEnabled(TRUE);
+        mEventList->setEnabled(true);
         getChild<LLButton>("btn_next")->setEnabled(moreItems);
         getChild<LLButton>("btn_prev")->setEnabled(mCurrentPage>0);
         getChild<LLButton>("btn_clear")->setEnabled(mEventList->getItemCount()>0);
diff --git a/indra/newview/llpanelexperiencelog.h b/indra/newview/llpanelexperiencelog.h
index f99e424d81..fb84e0475a 100644
--- a/indra/newview/llpanelexperiencelog.h
+++ b/indra/newview/llpanelexperiencelog.h
@@ -40,7 +40,7 @@ public:
 
     static LLPanelExperienceLog* create();
 
-    /*virtual*/ BOOL postBuild(void);
+    /*virtual*/ bool postBuild();
 
     void refresh();
 protected:
diff --git a/indra/newview/llpanelexperiencepicker.cpp b/indra/newview/llpanelexperiencepicker.cpp
index 396f1341a2..5a176b8b92 100644
--- a/indra/newview/llpanelexperiencepicker.cpp
+++ b/indra/newview/llpanelexperiencepicker.cpp
@@ -70,28 +70,28 @@ LLPanelExperiencePicker::~LLPanelExperiencePicker()
 {
 }
 
-BOOL LLPanelExperiencePicker::postBuild()
+bool LLPanelExperiencePicker::postBuild()
 {
     getChild<LLLineEditor>(TEXT_EDIT)->setKeystrokeCallback( boost::bind(&LLPanelExperiencePicker::editKeystroke, this, _1, _2),NULL);
 
     childSetAction(BTN_FIND, boost::bind(&LLPanelExperiencePicker::onBtnFind, this));
-    getChildView(BTN_FIND)->setEnabled(TRUE);
+    getChildView(BTN_FIND)->setEnabled(true);
 
     LLScrollListCtrl* searchresults = getChild<LLScrollListCtrl>(LIST_RESULTS);
     searchresults->setDoubleClickCallback( boost::bind(&LLPanelExperiencePicker::onBtnSelect, this));
     searchresults->setCommitCallback(boost::bind(&LLPanelExperiencePicker::onList, this));
-    getChildView(LIST_RESULTS)->setEnabled(FALSE);
+    getChildView(LIST_RESULTS)->setEnabled(false);
     getChild<LLScrollListCtrl>(LIST_RESULTS)->setCommentText(getString("no_results"));
 
     childSetAction(BTN_OK, boost::bind(&LLPanelExperiencePicker::onBtnSelect, this));
-    getChildView(BTN_OK)->setEnabled(FALSE);
+    getChildView(BTN_OK)->setEnabled(false);
     childSetAction(BTN_CANCEL, boost::bind(&LLPanelExperiencePicker::onBtnClose, this));
     childSetAction(BTN_PROFILE, boost::bind(&LLPanelExperiencePicker::onBtnProfile, this));
-    getChildView(BTN_PROFILE)->setEnabled(FALSE);
+    getChildView(BTN_PROFILE)->setEnabled(false);
 
     getChild<LLComboBox>(TEXT_MATURITY)->setCurrentByIndex(gSavedPerAccountSettings.getU32("ExperienceSearchMaturity"));
     getChild<LLComboBox>(TEXT_MATURITY)->setCommitCallback(boost::bind(&LLPanelExperiencePicker::onMaturity, this));
-    getChild<LLUICtrl>(TEXT_EDIT)->setFocus(TRUE);
+    getChild<LLUICtrl>(TEXT_EDIT)->setFocus(true);
 
     childSetAction(BTN_LEFT, boost::bind(&LLPanelExperiencePicker::onPage, this, -1));
     childSetAction(BTN_RIGHT, boost::bind(&LLPanelExperiencePicker::onPage, this, 1));
@@ -102,7 +102,7 @@ BOOL LLPanelExperiencePicker::postBuild()
         // Start searching when Return is pressed in the line editor.
         search_panel->setDefaultBtn(BTN_FIND);
     }
-    return TRUE;
+    return true;
 }
 
 void LLPanelExperiencePicker::editKeystroke( class LLLineEditor* caller, void* user_data )
@@ -140,11 +140,11 @@ void LLPanelExperiencePicker::onBtnFind()
                     getChild<LLScrollListCtrl>(LIST_RESULTS)->deleteAllItems();
                     getChild<LLScrollListCtrl>(LIST_RESULTS)->setCommentText(getString("searching"));
 
-                    getChildView(BTN_OK)->setEnabled(FALSE);
-                    getChildView(BTN_PROFILE)->setEnabled(FALSE);
+                    getChildView(BTN_OK)->setEnabled(false);
+                    getChildView(BTN_PROFILE)->setEnabled(false);
 
-                    getChildView(BTN_RIGHT)->setEnabled(FALSE);
-                    getChildView(BTN_LEFT)->setEnabled(FALSE);
+                    getChildView(BTN_RIGHT)->setEnabled(false);
+                    getChildView(BTN_LEFT)->setEnabled(false);
                     LLExperienceCache::instance().get(experience_id, boost::bind(&LLPanelExperiencePicker::onBtnFind, this));
                     return;
                 }
@@ -176,11 +176,11 @@ void LLPanelExperiencePicker::find()
     getChild<LLScrollListCtrl>(LIST_RESULTS)->deleteAllItems();
     getChild<LLScrollListCtrl>(LIST_RESULTS)->setCommentText(getString("searching"));
 
-    getChildView(BTN_OK)->setEnabled(FALSE);
-    getChildView(BTN_PROFILE)->setEnabled(FALSE);
+    getChildView(BTN_OK)->setEnabled(false);
+    getChildView(BTN_PROFILE)->setEnabled(false);
 
-    getChildView(BTN_RIGHT)->setEnabled(FALSE);
-    getChildView(BTN_LEFT)->setEnabled(FALSE);
+    getChildView(BTN_RIGHT)->setEnabled(false);
+    getChildView(BTN_LEFT)->setEnabled(false);
 }
 
 /*static*/
@@ -266,10 +266,10 @@ void LLPanelExperiencePicker::onBtnSelect()
 
         getSelectedExperienceIds(results, experience_ids);
         mSelectionCallback(experience_ids);
-        getChild<LLScrollListCtrl>(LIST_RESULTS)->deselectAllItems(TRUE);
+        getChild<LLScrollListCtrl>(LIST_RESULTS)->deselectAllItems(true);
         if(mCloseOnSelect)
         {
-            mCloseOnSelect = FALSE;
+            mCloseOnSelect = false;
             onBtnClose();
         }
     }
@@ -368,14 +368,14 @@ void LLPanelExperiencePicker::filterContent()
     {
         getChildView(BTN_OK)->setEnabled(true);
         search_results->setEnabled(true);
-        search_results->sortByColumnIndex(1, TRUE);
+        search_results->sortByColumnIndex(1, true);
         std::string text = getChild<LLUICtrl>(TEXT_EDIT)->getValue().asString();
-        if (!search_results->selectItemByLabel(text, TRUE, 1))
+        if (!search_results->selectItemByLabel(text, true, 1))
         {
             search_results->selectFirstItem();
         }
         onList();
-        search_results->setFocus(TRUE);
+        search_results->setFocus(true);
     }
 }
 
diff --git a/indra/newview/llpanelexperiencepicker.h b/indra/newview/llpanelexperiencepicker.h
index fc8b1d5418..72c0b1b74d 100644
--- a/indra/newview/llpanelexperiencepicker.h
+++ b/indra/newview/llpanelexperiencepicker.h
@@ -47,7 +47,7 @@ public:
     LLPanelExperiencePicker();
     virtual ~LLPanelExperiencePicker();
 
-    BOOL postBuild();
+    bool postBuild();
 
     void addFilter(filter_function func){mFilters.push_back(func);}
     template <class IT>
diff --git a/indra/newview/llpanelexperiences.cpp b/indra/newview/llpanelexperiences.cpp
index 7080aaa3db..6cdeefdbad 100644
--- a/indra/newview/llpanelexperiences.cpp
+++ b/indra/newview/llpanelexperiences.cpp
@@ -51,7 +51,7 @@ LLPanelExperiences::LLPanelExperiences(  )
     buildFromFile("panel_experiences.xml");
 }
 
-BOOL LLPanelExperiences::postBuild( void )
+bool LLPanelExperiences::postBuild( void )
 {
     mExperiencesList = getChild<LLFlatListView>("experiences_list");
     if (hasString("loading_experiences"))
@@ -64,7 +64,7 @@ BOOL LLPanelExperiences::postBuild( void )
     }
     mExperiencesList->setComparator(&NAME_COMPARATOR);
 
-    return TRUE;
+    return true;
 }
 
 
@@ -212,10 +212,10 @@ LLPanelSearchExperiences* LLPanelSearchExperiences::create( const std::string& n
     return panel;
 }
 
-BOOL LLPanelSearchExperiences::postBuild( void )
+bool LLPanelSearchExperiences::postBuild( void )
 {
     childSetAction("search_button", boost::bind(&LLPanelSearchExperiences::doSearch, this));
-    return TRUE;
+    return true;
 }
 
 bool LLExperienceItemComparator::compare(const LLPanel* item1, const LLPanel* item2) const
diff --git a/indra/newview/llpanelexperiences.h b/indra/newview/llpanelexperiences.h
index 7a50ab7666..9c70593a5c 100644
--- a/indra/newview/llpanelexperiences.h
+++ b/indra/newview/llpanelexperiences.h
@@ -40,7 +40,7 @@ class LLPanelSearchExperiences
 public:
     LLPanelSearchExperiences(){}
     static LLPanelSearchExperiences* create(const std::string& name);
-    /*virtual*/ BOOL postBuild(void);
+    /*virtual*/ bool postBuild(void);
 
     void doSearch();
 };
@@ -53,8 +53,7 @@ public:
 
     static LLPanelExperiences* create(const std::string& name);
 
-    /*virtual*/ BOOL postBuild(void);
-    /*virtual*/ void onClosePanel();
+    /*virtual*/ bool postBuild(void);
 
     void setExperienceList(const LLSD& experiences);
     void getExperienceIdsList(std::vector<LLUUID>& result);
diff --git a/indra/newview/llpanelface.cpp b/indra/newview/llpanelface.cpp
index 5e5d5f42d4..8a89c5a1aa 100644
--- a/indra/newview/llpanelface.cpp
+++ b/indra/newview/llpanelface.cpp
@@ -263,7 +263,7 @@ F32     LLPanelFace::getCurrentShinyOffsetV()       { return getChild<LLUICtrl>(
 // Methods
 //
 
-BOOL    LLPanelFace::postBuild()
+bool    LLPanelFace::postBuild()
 {
     childSetCommitCallback("combobox shininess",&LLPanelFace::onCommitShiny,this);
     childSetCommitCallback("combobox bumpiness",&LLPanelFace::onCommitBump,this);
@@ -322,7 +322,7 @@ BOOL    LLPanelFace::postBuild()
 
     LLSpinCtrl*     mCtrlGlow;
 
-    setMouseOpaque(FALSE);
+    setMouseOpaque(false);
 
     LLTextureCtrl*  pbr_ctrl = findChild<LLTextureCtrl>("pbr_control");
     if (pbr_ctrl)
@@ -404,7 +404,7 @@ BOOL    LLPanelFace::postBuild()
         mColorSwatch->setOnSelectCallback(boost::bind(&LLPanelFace::onSelectColor, this, _2));
         mColorSwatch->setFollowsTop();
         mColorSwatch->setFollowsLeft();
-        mColorSwatch->setCanApplyImmediately(TRUE);
+        mColorSwatch->setCanApplyImmediately(true);
     }
 
     mShinyColorSwatch = getChild<LLColorSwatchCtrl>("shinycolorswatch");
@@ -415,7 +415,7 @@ BOOL    LLPanelFace::postBuild()
         mShinyColorSwatch->setOnSelectCallback(boost::bind(&LLPanelFace::onSelectShinyColor, this, _2));
         mShinyColorSwatch->setFollowsTop();
         mShinyColorSwatch->setFollowsLeft();
-        mShinyColorSwatch->setCanApplyImmediately(TRUE);
+        mShinyColorSwatch->setCanApplyImmediately(true);
     }
 
     mLabelColorTransp = getChild<LLTextBox>("color trans");
@@ -482,7 +482,7 @@ BOOL    LLPanelFace::postBuild()
 
     clearCtrls();
 
-    return TRUE;
+    return true;
 }
 
 LLPanelFace::LLPanelFace()
@@ -503,7 +503,7 @@ LLPanelFace::~LLPanelFace()
     unloadMedia();
 }
 
-void LLPanelFace::onVisibilityChange(BOOL new_visibility)
+void LLPanelFace::onVisibilityChange(bool new_visibility)
 {
     if (new_visibility)
     {
@@ -655,7 +655,7 @@ struct LLPanelFaceSetTEFunctor : public LLSelectedTEFunctor
     LLPanelFaceSetTEFunctor(LLPanelFace* panel) : mPanel(panel) {}
     virtual bool apply(LLViewerObject* object, S32 te)
     {
-        BOOL valid;
+        bool valid;
         F32 value;
         std::string prefix;
 
@@ -1021,8 +1021,8 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
         && objectp->getPCode() == LL_PCODE_VOLUME
         && objectp->permModify())
     {
-        BOOL editable = objectp->permModify() && !objectp->isPermanentEnforced();
-        BOOL attachment = objectp->isAttachment();
+        bool editable = objectp->permModify() && !objectp->isPermanentEnforced();
+        bool attachment = objectp->isAttachment();
 
         bool has_pbr_material;
         bool has_faces_without_pbr;
@@ -1237,27 +1237,35 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
 
         // Texture
         {
-            mIsAlpha = FALSE;
             LLGLenum image_format = GL_RGB;
             bool identical_image_format = false;
-            LLSelectedTE::getImageFormat(image_format, identical_image_format);
+            bool missing_asset = false;
+            LLSelectedTE::getImageFormat(image_format, identical_image_format, missing_asset);
 
-            mIsAlpha = FALSE;
-            switch (image_format)
+            if (!missing_asset)
             {
+                mIsAlpha = false;
+                switch (image_format)
+                {
                 case GL_RGBA:
                 case GL_ALPHA:
-                {
-                    mIsAlpha = TRUE;
-                }
-                break;
+                    {
+                        mIsAlpha = true;
+                    }
+                    break;
 
                 case GL_RGB: break;
                 default:
-                {
-                    LL_WARNS() << "Unexpected tex format in LLPanelFace...resorting to no alpha" << LL_ENDL;
+                    {
+                        LL_WARNS() << "Unexpected tex format in LLPanelFace...resorting to no alpha" << LL_ENDL;
+                    }
+                    break;
                 }
-                break;
+            }
+            else
+            {
+                // Don't know image's properties, use material's mode value
+                mIsAlpha = true;
             }
 
             if (LLViewerMedia::getInstance()->textureHasMedia(id))
@@ -1300,41 +1308,45 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
             {
                 if (identical_diffuse)
                 {
-                    texture_ctrl->setTentative(FALSE);
+                    texture_ctrl->setTentative(false);
                     texture_ctrl->setEnabled(editable && !has_pbr_material);
                     texture_ctrl->setImageAssetID(id);
-                    getChildView("combobox alphamode")->setEnabled(editable && mIsAlpha && transparency <= 0.f && !has_pbr_material);
-                    getChildView("label alphamode")->setEnabled(editable && mIsAlpha && !has_pbr_material);
-                    getChildView("maskcutoff")->setEnabled(editable && mIsAlpha && !has_pbr_material);
-                    getChildView("label maskcutoff")->setEnabled(editable && mIsAlpha && !has_pbr_material);
 
-                    texture_ctrl->setBakeTextureEnabled(TRUE);
+                    bool can_change_alpha = editable && mIsAlpha && !missing_asset && !has_pbr_material;
+                    getChildView("combobox alphamode")->setEnabled(can_change_alpha && transparency <= 0.f);
+                    getChildView("label alphamode")->setEnabled(can_change_alpha);
+                    getChildView("maskcutoff")->setEnabled(can_change_alpha);
+                    getChildView("label maskcutoff")->setEnabled(can_change_alpha);
+
+                    texture_ctrl->setBakeTextureEnabled(true);
                 }
                 else if (id.isNull())
                 {
                     // None selected
-                    texture_ctrl->setTentative(FALSE);
-                    texture_ctrl->setEnabled(FALSE);
+                    texture_ctrl->setTentative(false);
+                    texture_ctrl->setEnabled(false);
                     texture_ctrl->setImageAssetID(LLUUID::null);
-                    getChildView("combobox alphamode")->setEnabled(FALSE);
-                    getChildView("label alphamode")->setEnabled(FALSE);
-                    getChildView("maskcutoff")->setEnabled(FALSE);
-                    getChildView("label maskcutoff")->setEnabled(FALSE);
+                    getChildView("combobox alphamode")->setEnabled(false);
+                    getChildView("label alphamode")->setEnabled(false);
+                    getChildView("maskcutoff")->setEnabled(false);
+                    getChildView("label maskcutoff")->setEnabled(false);
 
                     texture_ctrl->setBakeTextureEnabled(false);
                 }
                 else
                 {
                     // Tentative: multiple selected with different textures
-                    texture_ctrl->setTentative(TRUE);
+                    texture_ctrl->setTentative(true);
                     texture_ctrl->setEnabled(editable && !has_pbr_material);
                     texture_ctrl->setImageAssetID(id);
-                    getChildView("combobox alphamode")->setEnabled(editable && mIsAlpha && transparency <= 0.f && !has_pbr_material);
-                    getChildView("label alphamode")->setEnabled(editable && mIsAlpha && !has_pbr_material);
-                    getChildView("maskcutoff")->setEnabled(editable && mIsAlpha && !has_pbr_material);
-                    getChildView("label maskcutoff")->setEnabled(editable && mIsAlpha && !has_pbr_material);
 
-                    texture_ctrl->setBakeTextureEnabled(TRUE);
+                    bool can_change_alpha = editable && mIsAlpha && !missing_asset && !has_pbr_material;
+                    getChildView("combobox alphamode")->setEnabled(can_change_alpha && transparency <= 0.f);
+                    getChildView("label alphamode")->setEnabled(can_change_alpha);
+                    getChildView("maskcutoff")->setEnabled(can_change_alpha);
+                    getChildView("label maskcutoff")->setEnabled(can_change_alpha);
+
+                    texture_ctrl->setBakeTextureEnabled(true);
                 }
 
                 if (attachment)
@@ -1454,9 +1466,9 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
             getChildView("shinyScaleU")->setEnabled(editable && has_material && specmap_id.notNull());
             getChildView("bumpyScaleU")->setEnabled(editable && has_material && normmap_id.notNull());
 
-            BOOL diff_scale_tentative = !(identical && identical_diff_scale_s);
-            BOOL norm_scale_tentative = !(identical && identical_norm_scale_s);
-            BOOL spec_scale_tentative = !(identical && identical_spec_scale_s);
+            bool diff_scale_tentative = !(identical && identical_diff_scale_s);
+            bool norm_scale_tentative = !(identical && identical_norm_scale_s);
+            bool spec_scale_tentative = !(identical && identical_spec_scale_s);
 
             getChild<LLUICtrl>("TexScaleU")->setTentative(  LLSD(diff_scale_tentative));
             getChild<LLUICtrl>("shinyScaleU")->setTentative(LLSD(spec_scale_tentative));
@@ -1485,9 +1497,9 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
             spec_scale_t = editable ? spec_scale_t : 1.0f;
             spec_scale_t *= identical_planar_texgen ? 2.0f : 1.0f;
 
-            BOOL diff_scale_tentative = !identical_diff_scale_t;
-            BOOL norm_scale_tentative = !identical_norm_scale_t;
-            BOOL spec_scale_tentative = !identical_spec_scale_t;
+            bool diff_scale_tentative = !identical_diff_scale_t;
+            bool norm_scale_tentative = !identical_norm_scale_t;
+            bool spec_scale_tentative = !identical_spec_scale_t;
 
             getChildView("TexScaleV")->setEnabled(editable && has_material);
             getChildView("shinyScaleV")->setEnabled(editable && has_material && specmap_id.notNull());
@@ -1523,9 +1535,9 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
             LLSelectedTEMaterial::getNormalOffsetX(norm_offset_s, identical_norm_offset_s);
             LLSelectedTEMaterial::getSpecularOffsetX(spec_offset_s, identical_spec_offset_s);
 
-            BOOL diff_offset_u_tentative = !(align_planar ? identical_planar_aligned : identical_diff_offset_s);
-            BOOL norm_offset_u_tentative = !(align_planar ? identical_planar_aligned : identical_norm_offset_s);
-            BOOL spec_offset_u_tentative = !(align_planar ? identical_planar_aligned : identical_spec_offset_s);
+            bool diff_offset_u_tentative = !(align_planar ? identical_planar_aligned : identical_diff_offset_s);
+            bool norm_offset_u_tentative = !(align_planar ? identical_planar_aligned : identical_norm_offset_s);
+            bool spec_offset_u_tentative = !(align_planar ? identical_planar_aligned : identical_spec_offset_s);
 
             getChild<LLUICtrl>("TexOffsetU")->setValue(  editable ? diff_offset_s : 0.0f);
             getChild<LLUICtrl>("bumpyOffsetU")->setValue(editable ? norm_offset_s : 0.0f);
@@ -1553,9 +1565,9 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
             LLSelectedTEMaterial::getNormalOffsetY(norm_offset_t, identical_norm_offset_t);
             LLSelectedTEMaterial::getSpecularOffsetY(spec_offset_t, identical_spec_offset_t);
 
-            BOOL diff_offset_v_tentative = !(align_planar ? identical_planar_aligned : identical_diff_offset_t);
-            BOOL norm_offset_v_tentative = !(align_planar ? identical_planar_aligned : identical_norm_offset_t);
-            BOOL spec_offset_v_tentative = !(align_planar ? identical_planar_aligned : identical_spec_offset_t);
+            bool diff_offset_v_tentative = !(align_planar ? identical_planar_aligned : identical_diff_offset_t);
+            bool norm_offset_v_tentative = !(align_planar ? identical_planar_aligned : identical_norm_offset_t);
+            bool spec_offset_v_tentative = !(align_planar ? identical_planar_aligned : identical_spec_offset_t);
 
             getChild<LLUICtrl>("TexOffsetV")->setValue(  editable ? diff_offset_t : 0.0f);
             getChild<LLUICtrl>("bumpyOffsetV")->setValue(editable ? norm_offset_t : 0.0f);
@@ -1584,9 +1596,9 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
             LLSelectedTEMaterial::getSpecularRotation(spec_rotation,identical_spec_rotation);
             LLSelectedTEMaterial::getNormalRotation(norm_rotation,identical_norm_rotation);
 
-            BOOL diff_rot_tentative = !(align_planar ? identical_planar_aligned : identical_diff_rotation);
-            BOOL norm_rot_tentative = !(align_planar ? identical_planar_aligned : identical_norm_rotation);
-            BOOL spec_rot_tentative = !(align_planar ? identical_planar_aligned : identical_spec_rotation);
+            bool diff_rot_tentative = !(align_planar ? identical_planar_aligned : identical_diff_rotation);
+            bool norm_rot_tentative = !(align_planar ? identical_planar_aligned : identical_norm_rotation);
+            bool spec_rot_tentative = !(align_planar ? identical_planar_aligned : identical_spec_rotation);
 
             F32 diff_rot_deg = diff_rotation * RAD_TO_DEG;
             F32 norm_rot_deg = norm_rotation * RAD_TO_DEG;
@@ -1715,7 +1727,7 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
                 break;
                 }
 
-                BOOL repeats_tentative = !identical_repeats;
+                bool repeats_tentative = !identical_repeats;
 
                 LLSpinCtrl* rpt_ctrl = getChild<LLSpinCtrl>("rptctrl");
                 if (force_set_values)
@@ -1793,7 +1805,6 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
                     getChild<LLUICtrl>("shinyOffsetV")->setValue(offset_y);
                     getChild<LLUICtrl>("glossiness")->setValue(material->getSpecularLightExponent());
                     getChild<LLUICtrl>("environment")->setValue(material->getEnvironmentIntensity());
-                    getChild<LLUICtrl>("mirror")->setValue(material->getEnvironmentIntensity());
 
                     updateShinyControls(!material->getSpecularID().isNull(), true);
                 }
@@ -1838,7 +1849,7 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
             }
         }
         S32 selected_count = LLSelectMgr::getInstance()->getSelection()->getObjectCount();
-        BOOL single_volume = (selected_count == 1);
+        bool single_volume = (selected_count == 1);
         mMenuClipboardColor->setEnabled(editable && single_volume);
 
         // Set variable values for numeric expressions
@@ -1861,36 +1872,36 @@ void LLPanelFace::updateUI(bool force_set_values /*false*/)
         if (pbr_ctrl)
         {
             pbr_ctrl->setImageAssetID(LLUUID::null);
-            pbr_ctrl->setEnabled(FALSE);
+            pbr_ctrl->setEnabled(false);
         }
         LLTextureCtrl*  texture_ctrl = getChild<LLTextureCtrl>("texture control");
         if (texture_ctrl)
         {
             texture_ctrl->setImageAssetID( LLUUID::null );
-            texture_ctrl->setEnabled( FALSE );  // this is a LLUICtrl, but we don't want it to have keyboard focus so we add it as a child, not a ctrl.
-//          texture_ctrl->setValid(FALSE);
+            texture_ctrl->setEnabled( false );  // this is a LLUICtrl, but we don't want it to have keyboard focus so we add it as a child, not a ctrl.
+//          texture_ctrl->setValid(false);
         }
         LLColorSwatchCtrl* mColorSwatch = getChild<LLColorSwatchCtrl>("colorswatch");
         if (mColorSwatch)
         {
-            mColorSwatch->setEnabled( FALSE );
+            mColorSwatch->setEnabled( false );
             mColorSwatch->setFallbackImage(LLUI::getUIImage("locked_image.j2c") );
-            mColorSwatch->setValid(FALSE);
+            mColorSwatch->setValid(false);
         }
         LLRadioGroup* radio_mat_type = getChild<LLRadioGroup>("radio_material_type");
         if (radio_mat_type)
         {
             radio_mat_type->setSelectedIndex(0);
         }
-        getChildView("color trans")->setEnabled(FALSE);
-        getChildView("rptctrl")->setEnabled(FALSE);
-        getChildView("tex gen")->setEnabled(FALSE);
-        getChildView("label shininess")->setEnabled(FALSE);
-        getChildView("label bumpiness")->setEnabled(FALSE);
-        getChildView("button align")->setEnabled(FALSE);
-        getChildView("pbr_from_inventory")->setEnabled(FALSE);
-        getChildView("edit_selected_pbr")->setEnabled(FALSE);
-        getChildView("save_selected_pbr")->setEnabled(FALSE);
+        getChildView("color trans")->setEnabled(false);
+        getChildView("rptctrl")->setEnabled(false);
+        getChildView("tex gen")->setEnabled(false);
+        getChildView("label shininess")->setEnabled(false);
+        getChildView("label bumpiness")->setEnabled(false);
+        getChildView("button align")->setEnabled(false);
+        getChildView("pbr_from_inventory")->setEnabled(false);
+        getChildView("edit_selected_pbr")->setEnabled(false);
+        getChildView("save_selected_pbr")->setEnabled(false);
 
         updateVisibility();
 
@@ -2000,7 +2011,7 @@ void LLPanelFace::updateUIGLTF(LLViewerObject* objectp, bool& has_pbr_material,
     {
         LLSelectedTE::getPbrMaterialId(pbr_id, identical_pbr, has_pbr_material, has_faces_without_pbr);
 
-        pbr_ctrl->setTentative(identical_pbr ? FALSE : TRUE);
+        pbr_ctrl->setTentative(!identical_pbr);
         pbr_ctrl->setEnabled(settable);
         pbr_ctrl->setImageAssetID(pbr_id);
 
@@ -2116,7 +2127,7 @@ void LLPanelFace::refreshMedia()
         && first_object->permModify()
         ))
     {
-        getChildView("add_media")->setEnabled(FALSE);
+        getChildView("add_media")->setEnabled(false);
         mTitleMediaText->clear();
         clearMediaSettings();
         return;
@@ -2127,13 +2138,13 @@ void LLPanelFace::refreshMedia()
 
     if (!has_media_capability)
     {
-        getChildView("add_media")->setEnabled(FALSE);
+        getChildView("add_media")->setEnabled(false);
         LL_WARNS("LLFloaterToolsMedia") << "Media not enabled (no capability) in this region!" << LL_ENDL;
         clearMediaSettings();
         return;
     }
 
-    BOOL is_nonpermanent_enforced = (LLSelectMgr::getInstance()->getSelection()->getFirstRootNode()
+    bool is_nonpermanent_enforced = (LLSelectMgr::getInstance()->getSelection()->getFirstRootNode()
         && LLSelectMgr::getInstance()->selectGetRootsNonPermanentEnforced())
         || LLSelectMgr::getInstance()->selectGetNonPermanentEnforced();
     bool editable = is_nonpermanent_enforced && (first_object->permModify() || selectedMediaEditable());
@@ -2253,7 +2264,7 @@ void LLPanelFace::refreshMedia()
             }
         }
 
-        getChildView("delete_media")->setEnabled(TRUE);
+        getChildView("delete_media")->setEnabled(true);
     }
 
     U32 materials_media = mComboMatMedia->getCurrentIndex();
@@ -2497,7 +2508,7 @@ void LLPanelFace::updateMediaSettings()
 
     // Auto play
     //value_bool = default_media_data.getAutoPlay();
-    // set default to auto play TRUE -- angela  EXT-5172
+    // set default to auto play true -- angela  EXT-5172
     value_bool = true;
     struct functor_getter_auto_play : public LLSelectedTEGetFunctor< bool >
     {
@@ -2509,7 +2520,7 @@ void LLPanelFace::updateMediaSettings()
                 if (object->getTE(face))
                     if (object->getTE(face)->getMediaData())
                         return object->getTE(face)->getMediaData()->getAutoPlay();
-            //return mMediaEntry.getAutoPlay(); set default to auto play TRUE -- angela  EXT-5172
+            //return mMediaEntry.getAutoPlay(); set default to auto play true -- angela  EXT-5172
             return true;
         };
 
@@ -2523,7 +2534,7 @@ void LLPanelFace::updateMediaSettings()
 
 
     // Auto scale
-    // set default to auto scale TRUE -- angela  EXT-5172
+    // set default to auto scale true -- angela  EXT-5172
     //value_bool = default_media_data.getAutoScale();
     value_bool = true;
     struct functor_getter_auto_scale : public LLSelectedTEGetFunctor< bool >
@@ -2536,7 +2547,7 @@ void LLPanelFace::updateMediaSettings()
                 if (object->getTE(face))
                     if (object->getTE(face)->getMediaData())
                         return object->getTE(face)->getMediaData()->getAutoScale();
-            // return mMediaEntry.getAutoScale();  set default to auto scale TRUE -- angela  EXT-5172
+            // return mMediaEntry.getAutoScale();  set default to auto scale true -- angela  EXT-5172
             return true;
         };
 
@@ -3221,9 +3232,9 @@ void LLPanelFace::onCommitGlow(LLUICtrl* ctrl, void* userdata)
 }
 
 // static
-BOOL LLPanelFace::onDragPbr(LLUICtrl*, LLInventoryItem* item)
+bool LLPanelFace::onDragPbr(LLUICtrl*, LLInventoryItem* item)
 {
-    BOOL accept = TRUE;
+    bool accept = true;
     for (LLObjectSelection::root_iterator iter = LLSelectMgr::getInstance()->getSelection()->root_begin();
         iter != LLSelectMgr::getInstance()->getSelection()->root_end(); iter++)
     {
@@ -3231,7 +3242,7 @@ BOOL LLPanelFace::onDragPbr(LLUICtrl*, LLInventoryItem* item)
         LLViewerObject* obj = node->getObject();
         if (!LLToolDragAndDrop::isInventoryDropAcceptable(obj, item))
         {
-            accept = FALSE;
+            accept = false;
             break;
         }
     }
@@ -3287,9 +3298,9 @@ void LLPanelFace::onSelectPbr(const LLSD& data)
 }
 
 // static
-BOOL LLPanelFace::onDragTexture(LLUICtrl*, LLInventoryItem* item)
+bool LLPanelFace::onDragTexture(LLUICtrl*, LLInventoryItem* item)
 {
-    BOOL accept = TRUE;
+    bool accept = true;
     for (LLObjectSelection::root_iterator iter = LLSelectMgr::getInstance()->getSelection()->root_begin();
         iter != LLSelectMgr::getInstance()->getSelection()->root_end(); iter++)
     {
@@ -3297,7 +3308,7 @@ BOOL LLPanelFace::onDragTexture(LLUICtrl*, LLInventoryItem* item)
         LLViewerObject* obj = node->getObject();
         if (!LLToolDragAndDrop::isInventoryDropAcceptable(obj, item))
         {
-            accept = FALSE;
+            accept = false;
             break;
         }
     }
@@ -3322,13 +3333,14 @@ void LLPanelFace::onSelectTexture(const LLSD& data)
 
     LLGLenum image_format;
     bool identical_image_format = false;
-    LLSelectedTE::getImageFormat(image_format, identical_image_format);
+    bool missing_asset = false;
+    LLSelectedTE::getImageFormat(image_format, identical_image_format, missing_asset);
 
     LLCtrlSelectionInterface* combobox_alphamode =
         childGetSelectionInterface("combobox alphamode");
 
     U32 alpha_mode = LLMaterial::DIFFUSE_ALPHA_MODE_NONE;
-    if (combobox_alphamode)
+    if (combobox_alphamode && !missing_asset)
     {
         switch (image_format)
         {
@@ -4683,7 +4695,7 @@ void LLPanelFace::onPasteTexture(LLViewerObject* objectp, S32 te)
                 else if (full_perm)
                 {
                     // Either library, local or existed as fullperm when user made a copy
-                    LLViewerTexture* image = LLViewerTextureManager::getFetchedTexture(imageid, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+                    LLViewerTexture* image = LLViewerTextureManager::getFetchedTexture(imageid, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
                     objectp->setTEImage(U8(te), image);
                 }
             }
@@ -5228,19 +5240,51 @@ void LLPanelFace::LLSelectedTE::getFace(LLFace*& face_to_return, bool& identical
     identical_face = LLSelectMgr::getInstance()->getSelection()->getSelectedTEValue(&get_te_face_func, face_to_return, false, (LLFace*)nullptr);
 }
 
-void LLPanelFace::LLSelectedTE::getImageFormat(LLGLenum& image_format_to_return, bool& identical_face)
+void LLPanelFace::LLSelectedTE::getImageFormat(LLGLenum& image_format_to_return, bool& identical_face, bool& missing_asset)
 {
-    LLGLenum image_format{};
-    struct LLSelectedTEGetImageFormat : public LLSelectedTEGetFunctor<LLGLenum>
+    struct LLSelectedTEGetmatId : public LLSelectedTEFunctor
     {
-        LLGLenum get(LLViewerObject* object, S32 te_index)
+        LLSelectedTEGetmatId()
+            : mImageFormat(GL_RGB)
+            , mIdentical(true)
+            , mMissingAsset(false)
+            , mFirstRun(true)
         {
-            LLViewerTexture* image = object->getTEImage(te_index);
-            return image ? image->getPrimaryFormat() : GL_RGB;
         }
-    } get_glenum;
-    identical_face = LLSelectMgr::getInstance()->getSelection()->getSelectedTEValue(&get_glenum, image_format);
-    image_format_to_return = image_format;
+        bool apply(LLViewerObject* object, S32 te_index) override
+        {
+            LLViewerTexture* image = object ? object->getTEImage(te_index) : nullptr;
+            LLGLenum format = GL_RGB;
+            bool missing = false;
+            if (image)
+            {
+                format = image->getPrimaryFormat();
+                missing = image->isMissingAsset();
+            }
+
+            if (mFirstRun)
+            {
+                mFirstRun = false;
+                mImageFormat = format;
+                mMissingAsset = missing;
+            }
+            else
+            {
+                mIdentical &= (mImageFormat == format);
+                mIdentical &= (mMissingAsset == missing);
+            }
+            return true;
+        }
+        LLGLenum mImageFormat;
+        bool mIdentical;
+        bool mMissingAsset;
+        bool mFirstRun;
+    } func;
+    LLSelectMgr::getInstance()->getSelection()->applyToTEs(&func);
+
+    image_format_to_return = func.mImageFormat;
+    identical_face = func.mIdentical;
+    missing_asset = func.mMissingAsset;
 }
 
 void LLPanelFace::LLSelectedTE::getTexId(LLUUID& id, bool& identical)
diff --git a/indra/newview/llpanelface.h b/indra/newview/llpanelface.h
index 318c7ccd24..602b05d240 100644
--- a/indra/newview/llpanelface.h
+++ b/indra/newview/llpanelface.h
@@ -100,7 +100,7 @@ public:
 class LLPanelFace : public LLPanel
 {
 public:
-    virtual BOOL    postBuild();
+    virtual bool    postBuild();
     LLPanelFace();
     virtual ~LLPanelFace();
 
@@ -110,7 +110,7 @@ public:
 
     static void onMaterialOverrideReceived(const LLUUID& object_id, S32 side);
 
-    /*virtual*/ void onVisibilityChange(BOOL new_visibility);
+    /*virtual*/ void onVisibilityChange(bool new_visibility);
     /*virtual*/ void draw();
 
     LLMaterialPtr createDefaultMaterial(LLMaterialPtr current_material)
@@ -154,10 +154,10 @@ protected:
     void    onCommitPbr(const LLSD& data);
     void    onCancelPbr(const LLSD& data);
     void    onSelectPbr(const LLSD& data);
-    static BOOL onDragPbr(LLUICtrl* ctrl, LLInventoryItem* item);
+    static bool onDragPbr(LLUICtrl* ctrl, LLInventoryItem* item);
 
-    // this function is to return TRUE if the drag should succeed.
-    static BOOL onDragTexture(LLUICtrl* ctrl, LLInventoryItem* item);
+    // this function is to return true if the drag should succeed.
+    static bool onDragTexture(LLUICtrl* ctrl, LLInventoryItem* item);
 
     void    onCommitTexture(const LLSD& data);
     void    onCancelTexture(const LLSD& data);
@@ -600,7 +600,7 @@ public:
     {
     public:
         static void getFace(class LLFace*& face_to_return, bool& identical_face);
-        static void getImageFormat(LLGLenum& image_format_to_return, bool& identical_face);
+        static void getImageFormat(LLGLenum& image_format_to_return, bool& identical_face, bool& missing_asset);
         static void getTexId(LLUUID& id, bool& identical);
         static void getPbrMaterialId(LLUUID& id, bool& identical, bool& has_pbr, bool& has_faces_without_pbr);
         static void getObjectScaleS(F32& scale_s, bool& identical);
diff --git a/indra/newview/llpanelgroup.cpp b/indra/newview/llpanelgroup.cpp
index 372f1a9d20..519f157973 100644
--- a/indra/newview/llpanelgroup.cpp
+++ b/indra/newview/llpanelgroup.cpp
@@ -62,8 +62,8 @@ static LLPanelInjector<LLPanelGroup> t_panel_group("panel_group_info_sidetray");
 
 LLPanelGroupTab::LLPanelGroupTab()
     : LLPanel(),
-      mAllowEdit(TRUE),
-      mHasModal(FALSE)
+      mAllowEdit(true),
+      mHasModal(false)
 {
     mGroupID = LLUUID::null;
 }
@@ -72,21 +72,21 @@ LLPanelGroupTab::~LLPanelGroupTab()
 {
 }
 
-BOOL LLPanelGroupTab::isVisibleByAgent(LLAgent* agentp)
+bool LLPanelGroupTab::isVisibleByAgent(LLAgent* agentp)
 {
     //default to being visible
-    return TRUE;
+    return true;
 }
 
-BOOL LLPanelGroupTab::postBuild()
+bool LLPanelGroupTab::postBuild()
 {
-    return TRUE;
+    return true;
 }
 
 LLPanelGroup::LLPanelGroup()
 :   LLPanel(),
     LLGroupMgrObserver( LLUUID() ),
-    mSkipRefresh(FALSE),
+    mSkipRefresh(false),
     mButtonJoin(NULL)
 {
     // Set up the factory callbacks.
@@ -146,7 +146,7 @@ void LLPanelGroup::onOpen(const LLSD& key)
 
 }
 
-BOOL LLPanelGroup::postBuild()
+bool LLPanelGroup::postBuild()
 {
     mDefaultNeedsApplyMesg = getString("default_needs_apply_text");
     mWantApplyMesg = getString("want_apply_text");
@@ -196,7 +196,7 @@ BOOL LLPanelGroup::postBuild()
 
     LLVoiceClient::getInstance()->addObserver(this);
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelGroup::reposButton(const std::string& name)
@@ -230,7 +230,7 @@ void LLPanelGroup::reposButtons()
     reposButton("btn_call");
 }
 
-void LLPanelGroup::reshape(S32 width, S32 height, BOOL called_from_parent )
+void LLPanelGroup::reshape(S32 width, S32 height, bool called_from_parent )
 {
     LLPanel::reshape(width, height, called_from_parent );
 
@@ -507,7 +507,7 @@ bool LLPanelGroup::apply(LLPanelGroupTab* tab)
             }
         }
 
-        mSkipRefresh = TRUE;
+        mSkipRefresh = true;
         return true;
     }
 
@@ -560,7 +560,7 @@ void LLPanelGroup::refreshData()
 {
     if(mSkipRefresh)
     {
-        mSkipRefresh = FALSE;
+        mSkipRefresh = false;
         return;
     }
     LLGroupMgr::getInstance()->clearGroupData(getID());
diff --git a/indra/newview/llpanelgroup.h b/indra/newview/llpanelgroup.h
index ddc1613fb6..ede8118720 100644
--- a/indra/newview/llpanelgroup.h
+++ b/indra/newview/llpanelgroup.h
@@ -49,7 +49,7 @@ public:
     LLPanelGroup();
     virtual ~LLPanelGroup();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     void setGroupID(const LLUUID& group_id);
 
@@ -77,7 +77,7 @@ public:
     void callGroup();
     void chatGroup();
 
-    virtual void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual void reshape(S32 width, S32 height, bool called_from_parent = true);
 
     static void showNotice(const std::string& subject,
                            const std::string& message,
@@ -107,7 +107,7 @@ protected:
 
     LLTimer mRefreshTimer;
 
-    BOOL mSkipRefresh;
+    bool mSkipRefresh;
 
     std::string mDefaultNeedsApplyMesg;
     std::string mWantApplyMesg;
@@ -135,7 +135,7 @@ public:
     virtual bool needsApply(std::string& mesg) { return false; }
 
     // Asks if there is currently a modal dialog being shown.
-    virtual BOOL hasModal() { return mHasModal; }
+    virtual bool hasModal() { return mHasModal; }
 
     // Request to apply current data.
     // If returning fail, this function should modify the message to the user.
@@ -148,9 +148,9 @@ public:
     virtual void update(LLGroupChange gc) { }
 
     // This just connects the help button callback.
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
-    virtual BOOL isVisibleByAgent(LLAgent* agentp);
+    virtual bool isVisibleByAgent(LLAgent* agentp);
 
     virtual void setGroupID(const LLUUID& id) {mGroupID = id;};
 
@@ -164,8 +164,8 @@ public:
 
 protected:
     LLUUID  mGroupID;
-    BOOL mAllowEdit;
-    BOOL mHasModal;
+    bool mAllowEdit;
+    bool mHasModal;
 };
 
 #endif // LL_LLPANELGROUP_H
diff --git a/indra/newview/llpanelgroupbulk.cpp b/indra/newview/llpanelgroupbulk.cpp
index e2758524f3..f54ec45a3c 100644
--- a/indra/newview/llpanelgroupbulk.cpp
+++ b/indra/newview/llpanelgroupbulk.cpp
@@ -93,7 +93,7 @@ void LLPanelGroupBulkImpl::callbackClickAdd(void* userdata)
         LLView* button = panelp->findChild<LLButton>("add_button");
         LLFloater* root_floater = gFloaterView->getParentFloater(panelp);
         LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(
-            boost::bind(callbackAddUsers, _1, panelp->mImplementation), TRUE, FALSE, FALSE, root_floater->getName(), button);
+            boost::bind(callbackAddUsers, _1, panelp->mImplementation), true, false, false, root_floater->getName(), button);
         if(picker)
         {
             root_floater->addDependentFloater(picker);
@@ -181,12 +181,12 @@ void LLPanelGroupBulkImpl::handleRemove()
     }
 
     mBulkAgentList->deleteSelectedItems();
-    mRemoveButton->setEnabled(FALSE);
+    mRemoveButton->setEnabled(false);
 
     if( mOKButton && mOKButton->getEnabled() &&
         mBulkAgentList->isEmpty())
     {
-        mOKButton->setEnabled(FALSE);
+        mOKButton->setEnabled(false);
     }
 }
 
@@ -194,9 +194,9 @@ void LLPanelGroupBulkImpl::handleSelection()
 {
     std::vector<LLScrollListItem*> selection = mBulkAgentList->getAllSelected();
     if (selection.empty())
-        mRemoveButton->setEnabled(FALSE);
+        mRemoveButton->setEnabled(false);
     else
-        mRemoveButton->setEnabled(TRUE);
+        mRemoveButton->setEnabled(true);
 }
 
 void LLPanelGroupBulkImpl::addUsers(const std::vector<std::string>& names, const uuid_vec_t& agent_ids)
@@ -241,7 +241,7 @@ void LLPanelGroupBulkImpl::addUsers(const std::vector<std::string>& names, const
 
         // We've successfully added someone to the list.
         if(mOKButton && !mOKButton->getEnabled())
-            mOKButton->setEnabled(TRUE);
+            mOKButton->setEnabled(true);
     }
 }
 
@@ -273,7 +273,7 @@ void LLPanelGroupBulk::clear()
         mImplementation->mBulkAgentList->deleteAllItems();
 
     if(mImplementation->mOKButton)
-        mImplementation->mOKButton->setEnabled(FALSE);
+        mImplementation->mOKButton->setEnabled(false);
 }
 
 void LLPanelGroupBulk::update()
diff --git a/indra/newview/llpanelgroupbulkban.cpp b/indra/newview/llpanelgroupbulkban.cpp
index 6a17a6e56d..3c764887a6 100644
--- a/indra/newview/llpanelgroupbulkban.cpp
+++ b/indra/newview/llpanelgroupbulkban.cpp
@@ -55,16 +55,16 @@ LLPanelGroupBulkBan::LLPanelGroupBulkBan(const LLUUID& group_id) : LLPanelGroupB
     buildFromFile( "panel_group_bulk_ban.xml");
 }
 
-BOOL LLPanelGroupBulkBan::postBuild()
+bool LLPanelGroupBulkBan::postBuild()
 {
-    BOOL recurse = TRUE;
+    constexpr bool recurse = true;
 
     mImplementation->mLoadingText = getString("loading");
     mImplementation->mGroupName = getChild<LLTextBox>("group_name_text", recurse);
     mImplementation->mBulkAgentList = getChild<LLNameListCtrl>("banned_agent_list", recurse);
     if ( mImplementation->mBulkAgentList )
     {
-        mImplementation->mBulkAgentList->setCommitOnSelectionChange(TRUE);
+        mImplementation->mBulkAgentList->setCommitOnSelectionChange(true);
         mImplementation->mBulkAgentList->setCommitCallback(LLPanelGroupBulkImpl::callbackSelect, mImplementation);
     }
 
@@ -81,7 +81,7 @@ BOOL LLPanelGroupBulkBan::postBuild()
     if ( mImplementation->mRemoveButton )
     {
         mImplementation->mRemoveButton->setClickedCallback(LLPanelGroupBulkImpl::callbackClickRemove, mImplementation);
-        mImplementation->mRemoveButton->setEnabled(FALSE);
+        mImplementation->mRemoveButton->setEnabled(false);
     }
 
     mImplementation->mOKButton =
@@ -89,7 +89,7 @@ BOOL LLPanelGroupBulkBan::postBuild()
     if ( mImplementation->mOKButton )
     {
         mImplementation->mOKButton->setClickedCallback(LLPanelGroupBulkBan::callbackClickSubmit, this);
-        mImplementation->mOKButton->setEnabled(FALSE);
+        mImplementation->mOKButton->setEnabled(false);
     }
 
     button = getChild<LLButton>("cancel_button", recurse);
@@ -104,7 +104,7 @@ BOOL LLPanelGroupBulkBan::postBuild()
     mImplementation->mCannotBanYourself = getString("cant_ban_yourself");
 
     update();
-    return TRUE;
+    return true;
 }
 
 // TODO: Refactor the shitty callback functions with void* -- just use boost::bind to call submit() instead.
@@ -161,12 +161,12 @@ void LLPanelGroupBulkBan::submit()
     // remove already banned users and yourself from request.
     std::vector<LLAvatarName> banned_avatar_names;
     std::vector<LLAvatarName> out_of_limit_names;
-    bool banning_self{ false };
-    std::vector<LLUUID>::iterator conflict = std::find(banned_agent_list.begin(), banned_agent_list.end(), gAgentID);
+    bool banning_self = false;
+    std::vector<LLUUID>::iterator conflict = std::find(banned_agent_list.begin(), banned_agent_list.end(), gAgent.getID());
     if (conflict != banned_agent_list.end())
     {
         banned_agent_list.erase(conflict);
-        banning_self = TRUE;
+        banning_self = true;
     }
     if (group_datap)
     {
diff --git a/indra/newview/llpanelgroupbulkban.h b/indra/newview/llpanelgroupbulkban.h
index d7b2ed6e67..db4af1ccd3 100644
--- a/indra/newview/llpanelgroupbulkban.h
+++ b/indra/newview/llpanelgroupbulkban.h
@@ -38,7 +38,7 @@ public:
     LLPanelGroupBulkBan(const LLUUID& group_id);
     ~LLPanelGroupBulkBan() {}
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     static void callbackClickSubmit(void* userdata);
     virtual void submit();
diff --git a/indra/newview/llpanelgroupcreate.cpp b/indra/newview/llpanelgroupcreate.cpp
index 1b8947caee..4a370525ff 100644
--- a/indra/newview/llpanelgroupcreate.cpp
+++ b/indra/newview/llpanelgroupcreate.cpp
@@ -66,28 +66,28 @@ LLPanelGroupCreate::~LLPanelGroupCreate()
 {
 }
 
-BOOL LLPanelGroupCreate::postBuild()
+bool LLPanelGroupCreate::postBuild()
 {
     childSetCommitCallback("back", boost::bind(&LLPanelGroupCreate::onBackBtnClick, this), NULL);
 
-    mComboMature = getChild<LLComboBox>("group_mature_check", TRUE);
-    mCtrlOpenEnrollment = getChild<LLCheckBoxCtrl>("open_enrollement", TRUE);
-    mCtrlEnrollmentFee = getChild<LLCheckBoxCtrl>("check_enrollment_fee", TRUE);
-    mEditCharter = getChild<LLTextEditor>("charter", TRUE);
-    mSpinEnrollmentFee = getChild<LLSpinCtrl>("spin_enrollment_fee", TRUE);
-    mMembershipList = getChild<LLScrollListCtrl>("membership_list", TRUE);
+    mComboMature = getChild<LLComboBox>("group_mature_check", true);
+    mCtrlOpenEnrollment = getChild<LLCheckBoxCtrl>("open_enrollement", true);
+    mCtrlEnrollmentFee = getChild<LLCheckBoxCtrl>("check_enrollment_fee", true);
+    mEditCharter = getChild<LLTextEditor>("charter", true);
+    mSpinEnrollmentFee = getChild<LLSpinCtrl>("spin_enrollment_fee", true);
+    mMembershipList = getChild<LLScrollListCtrl>("membership_list", true);
 
-    mCreateButton = getChild<LLButton>("btn_create", TRUE);
+    mCreateButton = getChild<LLButton>("btn_create", true);
     mCreateButton->setCommitCallback(boost::bind(&LLPanelGroupCreate::onBtnCreate, this));
 
-    mGroupNameEditor = getChild<LLLineEditor>("group_name_editor", TRUE);
+    mGroupNameEditor = getChild<LLLineEditor>("group_name_editor", true);
     mGroupNameEditor->setPrevalidate(LLTextValidate::validateASCIINoLeadingSpace);
 
-    mInsignia = getChild<LLTextureCtrl>("insignia", TRUE);
-    mInsignia->setAllowLocalTexture(FALSE);
-    mInsignia->setCanApplyImmediately(FALSE);
+    mInsignia = getChild<LLTextureCtrl>("insignia", true);
+    mInsignia->setAllowLocalTexture(false);
+    mInsignia->setCanApplyImmediately(false);
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelGroupCreate::onOpen(const LLSD& key)
@@ -97,8 +97,8 @@ void LLPanelGroupCreate::onOpen(const LLSD& key)
     mGroupNameEditor->clear();
     mEditCharter->clear();
     mSpinEnrollmentFee->set(0.f);
-    mCtrlEnrollmentFee->set(FALSE);
-    mCtrlOpenEnrollment->set(FALSE);
+    mCtrlEnrollmentFee->set(false);
+    mCtrlOpenEnrollment->set(false);
     mMembershipList->clearRows();
 
     // populate list
@@ -194,7 +194,7 @@ void LLPanelGroupCreate::onBtnCreate()
     // Validate the group name length.
     std::string gr_name = mGroupNameEditor->getText();
     LLStringUtil::trim(gr_name);
-    S32 group_name_len = gr_name.size();
+    S32 group_name_len = static_cast<S32>(gr_name.size());
     if (group_name_len < DB_GROUP_NAME_MIN_LEN
         || group_name_len > DB_GROUP_NAME_STR_LEN)
     {
diff --git a/indra/newview/llpanelgroupcreate.h b/indra/newview/llpanelgroupcreate.h
index 239258f074..116621f58f 100644
--- a/indra/newview/llpanelgroupcreate.h
+++ b/indra/newview/llpanelgroupcreate.h
@@ -46,9 +46,9 @@ public:
     LLPanelGroupCreate();
     virtual ~LLPanelGroupCreate();
 
-    virtual BOOL postBuild();
+    bool postBuild() override;
 
-    void onOpen(const LLSD& key);
+    void onOpen(const LLSD& key) override;
 
     static void refreshCreatedGroup(const LLUUID& group_id);
 
diff --git a/indra/newview/llpanelgroupexperiences.cpp b/indra/newview/llpanelgroupexperiences.cpp
index 5f564fc870..99c40984a5 100644
--- a/indra/newview/llpanelgroupexperiences.cpp
+++ b/indra/newview/llpanelgroupexperiences.cpp
@@ -50,7 +50,7 @@ LLPanelGroupExperiences::~LLPanelGroupExperiences()
 {
 }
 
-BOOL LLPanelGroupExperiences::postBuild()
+bool LLPanelGroupExperiences::postBuild()
 {
     mExperiencesList = getChild<LLFlatListView>("experiences_list");
     if (hasString("loading_experiences"))
diff --git a/indra/newview/llpanelgroupexperiences.h b/indra/newview/llpanelgroupexperiences.h
index caf91015ec..77c3750174 100644
--- a/indra/newview/llpanelgroupexperiences.h
+++ b/indra/newview/llpanelgroupexperiences.h
@@ -40,7 +40,7 @@ public:
     // LLPanelGroupTab
     virtual void activate();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     virtual void setGroupID(const LLUUID& id);
 
diff --git a/indra/newview/llpanelgroupgeneral.cpp b/indra/newview/llpanelgroupgeneral.cpp
index 9c6f16ee9e..ca429ae2f8 100644
--- a/indra/newview/llpanelgroupgeneral.cpp
+++ b/indra/newview/llpanelgroupgeneral.cpp
@@ -64,8 +64,8 @@ const S32 DECLINE_TO_STATE = 0;
 
 LLPanelGroupGeneral::LLPanelGroupGeneral()
 :   LLPanelGroupTab(),
-    mChanged(FALSE),
-    mFirstUse(TRUE),
+    mChanged(false),
+    mFirstUse(true),
     mGroupNameEditor(NULL),
     mFounderName(NULL),
     mInsignia(NULL),
@@ -87,9 +87,9 @@ LLPanelGroupGeneral::~LLPanelGroupGeneral()
 {
 }
 
-BOOL LLPanelGroupGeneral::postBuild()
+bool LLPanelGroupGeneral::postBuild()
 {
-    bool recurse = true;
+    constexpr bool recurse = true;
 
     mEditCharter = getChild<LLTextEditor>("charter", recurse);
     if(mEditCharter)
@@ -115,7 +115,7 @@ BOOL LLPanelGroupGeneral::postBuild()
         if (gAgent.isTeen())
         {
             // Teens don't get to set mature flag. JC
-            mComboMature->setVisible(FALSE);
+            mComboMature->setVisible(false);
             mComboMature->setCurrentByIndex(NON_MATURE_CONTENT);
         }
     }
@@ -139,8 +139,8 @@ BOOL LLPanelGroupGeneral::postBuild()
         mSpinEnrollmentFee->resetDirty();
     }
 
-    BOOL accept_notices = FALSE;
-    BOOL list_in_profile = FALSE;
+    bool accept_notices = false;
+    bool list_in_profile = false;
     LLGroupData data;
     if(gAgent.getGroupData(mGroupID,data))
     {
@@ -177,13 +177,13 @@ BOOL LLPanelGroupGeneral::postBuild()
     // If the group_id is null, then we are creating a new group
     if (mGroupID.isNull())
     {
-        mEditCharter->setEnabled(TRUE);
+        mEditCharter->setEnabled(true);
 
-        mCtrlShowInGroupList->setEnabled(TRUE);
-        mComboMature->setEnabled(TRUE);
-        mCtrlOpenEnrollment->setEnabled(TRUE);
-        mCtrlEnrollmentFee->setEnabled(TRUE);
-        mSpinEnrollmentFee->setEnabled(TRUE);
+        mCtrlShowInGroupList->setEnabled(true);
+        mComboMature->setEnabled(true);
+        mCtrlOpenEnrollment->setEnabled(true);
+        mCtrlEnrollmentFee->setEnabled(true);
+        mSpinEnrollmentFee->setEnabled(true);
 
     }
 
@@ -196,7 +196,7 @@ void LLPanelGroupGeneral::setupCtrls(LLPanel* panel_group)
     if (mInsignia)
     {
         mInsignia->setCommitCallback(onCommitAny, this);
-        mInsignia->setAllowLocalTexture(FALSE);
+        mInsignia->setAllowLocalTexture(false);
     }
     mFounderName = getChild<LLTextBox>("founder_name");
 
@@ -227,7 +227,7 @@ void LLPanelGroupGeneral::onCommitAny(LLUICtrl* ctrl, void* data)
 void LLPanelGroupGeneral::onCommitUserOnly(LLUICtrl* ctrl, void* data)
 {
     LLPanelGroupGeneral* self = (LLPanelGroupGeneral*)data;
-    self->mChanged = TRUE;
+    self->mChanged = true;
     self->notifyObservers();
 }
 
@@ -253,11 +253,11 @@ void LLPanelGroupGeneral::onCommitEnrollment(LLUICtrl* ctrl, void* data)
 
     if (self->mCtrlEnrollmentFee->get())
     {
-        self->mSpinEnrollmentFee->setEnabled(TRUE);
+        self->mSpinEnrollmentFee->setEnabled(true);
     }
     else
     {
-        self->mSpinEnrollmentFee->setEnabled(FALSE);
+        self->mSpinEnrollmentFee->setEnabled(false);
         self->mSpinEnrollmentFee->set(0);
     }
 }
@@ -291,9 +291,9 @@ void LLPanelGroupGeneral::activate()
         LLGroupMgr::getInstance()->sendGroupTitlesRequest(mGroupID);
         LLGroupMgr::getInstance()->sendGroupPropertiesRequest(mGroupID);
 
-        mFirstUse = FALSE;
+        mFirstUse = false;
     }
-    mChanged = FALSE;
+    mChanged = false;
 
     update(GC_ALL);
 }
@@ -317,7 +317,7 @@ bool LLPanelGroupGeneral::apply(std::string& mesg)
         mComboActiveTitle->resetDirty();
     }
 
-    BOOL has_power_in_group = gAgent.hasPowerInGroup(mGroupID,GP_GROUP_CHANGE_IDENTITY);
+    bool has_power_in_group = gAgent.hasPowerInGroup(mGroupID,GP_GROUP_CHANGE_IDENTITY);
 
     if (has_power_in_group)
     {
@@ -357,7 +357,7 @@ bool LLPanelGroupGeneral::apply(std::string& mesg)
                 }
                 else
                 {
-                    gdatap->mMaturePublish = FALSE;
+                    gdatap->mMaturePublish = false;
                 }
             }
             if (mCtrlShowInGroupList) gdatap->mShowInList = mCtrlShowInGroupList->get();
@@ -381,8 +381,8 @@ bool LLPanelGroupGeneral::apply(std::string& mesg)
         }
     }
 
-    BOOL receive_notices = false;
-    BOOL list_in_profile = false;
+    bool receive_notices = false;
+    bool list_in_profile = false;
     if (mCtrlReceiveNotices)
         receive_notices = mCtrlReceiveNotices->get();
     if (mCtrlListGroup)
@@ -392,14 +392,14 @@ bool LLPanelGroupGeneral::apply(std::string& mesg)
 
     resetDirty();
 
-    mChanged = FALSE;
+    mChanged = false;
 
     return true;
 }
 
 void LLPanelGroupGeneral::cancel()
 {
-    mChanged = FALSE;
+    mChanged = false;
 
     //cancel out all of the click changes to, although since we are
     //shifting tabs or closing the floater, this need not be done...yet
@@ -469,11 +469,11 @@ void LLPanelGroupGeneral::update(LLGroupChange gc)
             if (1 == gdatap->mTitles.size())
             {
                 // Only the everyone title.  Don't bother letting them try changing this.
-                mComboActiveTitle->setEnabled(FALSE);
+                mComboActiveTitle->setEnabled(false);
             }
             else
             {
-                mComboActiveTitle->setEnabled(TRUE);
+                mComboActiveTitle->setEnabled(true);
             }
 
             std::vector<LLGroupTitle>::const_iterator citer = gdatap->mTitles.begin();
@@ -560,7 +560,7 @@ void LLPanelGroupGeneral::update(LLGroupChange gc)
     if (mInsignia) mInsignia->setEnabled(mAllowEdit && can_change_ident);
     if (mEditCharter) mEditCharter->setEnabled(mAllowEdit && can_change_ident);
 
-    if (mGroupNameEditor) mGroupNameEditor->setVisible(FALSE);
+    if (mGroupNameEditor) mGroupNameEditor->setVisible(false);
     if (mFounderName) mFounderName->setText(LLSLURL("agent", gdatap->mFounderID, "inspect").getSLURLString());
     if (mInsignia)
     {
@@ -603,13 +603,13 @@ void LLPanelGroupGeneral::updateChanged()
         mComboActiveTitle
     };
 
-    mChanged = FALSE;
+    mChanged = false;
 
     for( size_t i=0; i<LL_ARRAY_SIZE(check_list); i++ )
     {
         if( check_list[i] && check_list[i]->isDirty() )
         {
-            mChanged = TRUE;
+            mChanged = true;
             break;
         }
     }
@@ -630,17 +630,17 @@ void LLPanelGroupGeneral::reset()
 
     mCtrlListGroup->setEnabled(false);
 
-    mGroupNameEditor->setEnabled(TRUE);
-    mEditCharter->setEnabled(TRUE);
+    mGroupNameEditor->setEnabled(true);
+    mEditCharter->setEnabled(true);
 
     mCtrlShowInGroupList->setEnabled(false);
-    mComboMature->setEnabled(TRUE);
+    mComboMature->setEnabled(true);
 
-    mCtrlOpenEnrollment->setEnabled(TRUE);
+    mCtrlOpenEnrollment->setEnabled(true);
 
-    mCtrlEnrollmentFee->setEnabled(TRUE);
+    mCtrlEnrollmentFee->setEnabled(true);
 
-    mSpinEnrollmentFee->setEnabled(TRUE);
+    mSpinEnrollmentFee->setEnabled(true);
     mSpinEnrollmentFee->set((F32)0);
 
     mGroupNameEditor->setVisible(true);
@@ -708,8 +708,8 @@ void LLPanelGroupGeneral::setGroupID(const LLUUID& id)
         return;
     }
 
-    BOOL accept_notices = FALSE;
-    BOOL list_in_profile = FALSE;
+    bool accept_notices = false;
+    bool list_in_profile = false;
     LLGroupData data;
     if(gAgent.getGroupData(mGroupID,data))
     {
diff --git a/indra/newview/llpanelgroupgeneral.h b/indra/newview/llpanelgroupgeneral.h
index 487d6501a7..e5d766dc40 100644
--- a/indra/newview/llpanelgroupgeneral.h
+++ b/indra/newview/llpanelgroupgeneral.h
@@ -54,7 +54,7 @@ public:
 
     virtual void update(LLGroupChange gc);
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     virtual void draw();
 
@@ -78,8 +78,8 @@ private:
     void updateChanged();
     bool confirmMatureApply(const LLSD& notification, const LLSD& response);
 
-    BOOL            mChanged;
-    BOOL            mFirstUse;
+    bool            mChanged;
+    bool            mFirstUse;
     std::string     mIncompleteMemberDataStr;
 
     // Group information (include any updates in updateChanged)
diff --git a/indra/newview/llpanelgroupinvite.cpp b/indra/newview/llpanelgroupinvite.cpp
index 5327e21571..8a6876f8fc 100644
--- a/indra/newview/llpanelgroupinvite.cpp
+++ b/indra/newview/llpanelgroupinvite.cpp
@@ -253,7 +253,7 @@ void LLPanelGroupInvite::impl::addRoleNames(LLGroupMgrGroupData* gdatap)
     //else if they have the limited add to roles power
     //we add every role the user is in,
     //else we just add to everyone
-    bool is_owner = FALSE;
+    bool is_owner = false;
     bool can_assign_any = gAgent.hasPowerInGroup(mGroupID,
                                                  GP_ROLE_ASSIGN_MEMBER);
     bool can_assign_limited = gAgent.hasPowerInGroup(mGroupID,
@@ -314,7 +314,7 @@ void LLPanelGroupInvite::impl::callbackClickAdd(void* userdata)
         LLView * button = panelp->findChild<LLButton>("add_button");
         LLFloater * root_floater = gFloaterView->getParentFloater(panelp);
         LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(
-            boost::bind(impl::callbackAddUsers, _1, panelp->mImplementation), TRUE, FALSE, FALSE, root_floater->getName(), button);
+            boost::bind(impl::callbackAddUsers, _1, panelp->mImplementation), true, false, false, root_floater->getName(), button);
         if (picker)
         {
             root_floater->addDependentFloater(picker);
@@ -345,7 +345,7 @@ void LLPanelGroupInvite::impl::handleRemove()
 
     // Remove all selected invitees.
     mInvitees->deleteSelectedItems();
-    mRemoveButton->setEnabled(FALSE);
+    mRemoveButton->setEnabled(false);
 }
 
 // static
@@ -363,11 +363,11 @@ void LLPanelGroupInvite::impl::handleSelection()
             mInvitees->getAllSelected();
     if (selection.empty())
     {
-        mRemoveButton->setEnabled(FALSE);
+        mRemoveButton->setEnabled(false);
     }
     else
     {
-        mRemoveButton->setEnabled(TRUE);
+        mRemoveButton->setEnabled(true);
     }
 }
 
@@ -443,7 +443,7 @@ void LLPanelGroupInvite::impl::onAvatarNameCache(const LLUUID& agent_id,
 LLPanelGroupInvite::LLPanelGroupInvite(const LLUUID& group_id)
     : LLPanel(),
       mImplementation(new impl(group_id)),
-      mPendingUpdate(FALSE)
+      mPendingUpdate(false)
 {
     // Pass on construction of this panel to the control factory.
     buildFromFile( "panel_group_invite.xml");
@@ -467,7 +467,7 @@ void LLPanelGroupInvite::clear()
     mImplementation->mInvitees->deleteAllItems();
     mImplementation->mRoleNames->clear();
     mImplementation->mRoleNames->removeall();
-    mImplementation->mOKButton->setEnabled(FALSE);
+    mImplementation->mOKButton->setEnabled(false);
     mImplementation->mInviteeIDs.clear();
 }
 
@@ -544,7 +544,7 @@ void LLPanelGroupInvite::draw()
 
 void LLPanelGroupInvite::update()
 {
-    mPendingUpdate = FALSE;
+    mPendingUpdate = false;
     if (mImplementation->mGroupName)
     {
         mImplementation->mGroupName->setText(mImplementation->mLoadingText);
@@ -630,21 +630,21 @@ void LLPanelGroupInvite::updateLists()
                 LLGroupMgr::getInstance()->sendCapGroupMembersRequest(mImplementation->mGroupID);
             }
         }
-        mPendingUpdate = TRUE;
+        mPendingUpdate = true;
     }
     else
     {
-        mPendingUpdate = FALSE;
+        mPendingUpdate = false;
         if (mImplementation->mOKButton && mImplementation->mRoleNames->getItemCount())
         {
-            mImplementation->mOKButton->setEnabled(TRUE);
+            mImplementation->mOKButton->setEnabled(true);
         }
     }
 }
 
-BOOL LLPanelGroupInvite::postBuild()
+bool LLPanelGroupInvite::postBuild()
 {
-    BOOL recurse = TRUE;
+    constexpr bool recurse = true;
 
     mImplementation->mLoadingText = getString("loading");
     mImplementation->mRoleNames = getChild<LLComboBox>("role_name",
@@ -654,7 +654,7 @@ BOOL LLPanelGroupInvite::postBuild()
         getChild<LLNameListCtrl>("invitee_list", recurse);
     if ( mImplementation->mInvitees )
     {
-        mImplementation->mInvitees->setCommitOnSelectionChange(TRUE);
+        mImplementation->mInvitees->setCommitOnSelectionChange(true);
         mImplementation->mInvitees->setCommitCallback(impl::callbackSelect, mImplementation);
     }
 
@@ -671,7 +671,7 @@ BOOL LLPanelGroupInvite::postBuild()
     if ( mImplementation->mRemoveButton )
     {
         mImplementation->mRemoveButton->setClickedCallback(impl::callbackClickRemove, mImplementation);
-        mImplementation->mRemoveButton->setEnabled(FALSE);
+        mImplementation->mRemoveButton->setEnabled(false);
     }
 
     mImplementation->mOKButton =
@@ -679,7 +679,7 @@ BOOL LLPanelGroupInvite::postBuild()
     if ( mImplementation->mOKButton )
     {
         mImplementation->mOKButton->setClickedCallback(impl::callbackClickOK, mImplementation);
-        mImplementation->mOKButton->setEnabled(FALSE);
+        mImplementation->mOKButton->setEnabled(false);
     }
 
     button = getChild<LLButton>("cancel_button", recurse);
diff --git a/indra/newview/llpanelgroupinvite.h b/indra/newview/llpanelgroupinvite.h
index e79f81226b..08b7996246 100644
--- a/indra/newview/llpanelgroupinvite.h
+++ b/indra/newview/llpanelgroupinvite.h
@@ -43,18 +43,18 @@ public:
      * this callback is being used to add a user whose fullname isn't been loaded before invoking of addUsers().
      */
     void addUserCallback(const LLUUID& id, const LLAvatarName& av_name);
-    void clear();
+    void clear() override;
     void update();
 
     void setCloseCallback(void (*close_callback)(void*), void* data);
 
-    virtual void draw();
-    virtual BOOL postBuild();
+    void draw() override;
+    bool postBuild() override;
 protected:
     class impl;
     impl* mImplementation;
 
-    BOOL mPendingUpdate;
+    bool mPendingUpdate;
     LLUUID mStoreSelected;
     void updateLists();
 };
diff --git a/indra/newview/llpanelgrouplandmoney.cpp b/indra/newview/llpanelgrouplandmoney.cpp
index f104eb12c3..987782836b 100644
--- a/indra/newview/llpanelgrouplandmoney.cpp
+++ b/indra/newview/llpanelgrouplandmoney.cpp
@@ -674,7 +674,7 @@ void LLPanelGroupLandMoney::cancel()
 }
 
 
-BOOL LLPanelGroupLandMoney::postBuild()
+bool LLPanelGroupLandMoney::postBuild()
 {
     /* This power was removed to make group roles simpler
     bool has_parcel_view     = gAgent.hasPowerInGroup(mGroupID,
@@ -722,12 +722,12 @@ BOOL LLPanelGroupLandMoney::postBuild()
 
     if ( mImplementationp->mGroupOverLimitTextp )
     {
-        mImplementationp->mGroupOverLimitTextp->setVisible(FALSE);
+        mImplementationp->mGroupOverLimitTextp->setVisible(false);
     }
 
     if ( mImplementationp->mGroupOverLimitIconp )
     {
-        mImplementationp->mGroupOverLimitIconp->setVisible(FALSE);
+        mImplementationp->mGroupOverLimitIconp->setVisible(false);
     }
 
     if ( !can_view )
@@ -736,7 +736,7 @@ BOOL LLPanelGroupLandMoney::postBuild()
         {
             mImplementationp->mGroupParcelsp->setCommentText(
                             mImplementationp->mCantViewParcelsText);
-            mImplementationp->mGroupParcelsp->setEnabled(FALSE);
+            mImplementationp->mGroupParcelsp->setEnabled(false);
         }
     }
 
@@ -831,7 +831,7 @@ void LLPanelGroupLandMoney::onLandSelectionChanged()
     mImplementationp->mMapButtonp->setEnabled( mImplementationp->mGroupParcelsp->getItemCount() > 0 );
 }
 
-BOOL LLPanelGroupLandMoney::isVisibleByAgent(LLAgent* agentp)
+bool LLPanelGroupLandMoney::isVisibleByAgent(LLAgent* agentp)
 {
     return mAllowEdit && agentp->isInGroup(mGroupID);
 }
@@ -1557,12 +1557,12 @@ void LLPanelGroupLandMoney::setGroupID(const LLUUID& id)
 
     if ( mImplementationp->mGroupOverLimitTextp )
     {
-        mImplementationp->mGroupOverLimitTextp->setVisible(FALSE);
+        mImplementationp->mGroupOverLimitTextp->setVisible(false);
     }
 
     if ( mImplementationp->mGroupOverLimitIconp )
     {
-        mImplementationp->mGroupOverLimitIconp->setVisible(FALSE);
+        mImplementationp->mGroupOverLimitIconp->setVisible(false);
     }
 
     if ( mImplementationp->mGroupParcelsp )
@@ -1572,7 +1572,7 @@ void LLPanelGroupLandMoney::setGroupID(const LLUUID& id)
 
     if ( !can_view && mImplementationp->mGroupParcelsp )
     {
-        mImplementationp->mGroupParcelsp->setEnabled(FALSE);
+        mImplementationp->mGroupParcelsp->setEnabled(false);
     }
 
 
diff --git a/indra/newview/llpanelgrouplandmoney.h b/indra/newview/llpanelgrouplandmoney.h
index 0147acd768..d619e1be0a 100644
--- a/indra/newview/llpanelgrouplandmoney.h
+++ b/indra/newview/llpanelgrouplandmoney.h
@@ -36,8 +36,8 @@ class LLPanelGroupLandMoney : public LLPanelGroupTab
 public:
     LLPanelGroupLandMoney();
     virtual ~LLPanelGroupLandMoney();
-    virtual BOOL postBuild();
-    virtual BOOL isVisibleByAgent(LLAgent* agentp);
+    virtual bool postBuild();
+    virtual bool isVisibleByAgent(LLAgent* agentp);
 
     virtual void activate();
     virtual bool needsApply(std::string& mesg);
diff --git a/indra/newview/llpanelgroupnotices.cpp b/indra/newview/llpanelgroupnotices.cpp
index 3b7e4075c6..483c6876ed 100644
--- a/indra/newview/llpanelgroupnotices.cpp
+++ b/indra/newview/llpanelgroupnotices.cpp
@@ -89,11 +89,9 @@ public:
     LLGroupDropTarget(const Params&);
     ~LLGroupDropTarget() {};
 
-    void doDrop(EDragAndDropType cargo_type, void* cargo_data);
-
     //
     // LLView functionality
-    virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    virtual bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                    EDragAndDropType cargo_type,
                                    void* cargo_data,
                                    EAcceptance* accept,
@@ -114,23 +112,18 @@ LLGroupDropTarget::LLGroupDropTarget(const LLGroupDropTarget::Params& p)
     mGroupID(p.group_id)
 {}
 
-void LLGroupDropTarget::doDrop(EDragAndDropType cargo_type, void* cargo_data)
-{
-    LL_INFOS() << "LLGroupDropTarget::doDrop()" << LL_ENDL;
-}
-
-BOOL LLGroupDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLGroupDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                      EDragAndDropType cargo_type,
                                      void* cargo_data,
                                      EAcceptance* accept,
                                      std::string& tooltip_msg)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (!gAgent.hasPowerInGroup(mGroupID,GP_NOTICES_SEND))
     {
         *accept = ACCEPT_NO;
-        return TRUE;
+        return true;
     }
 
     if(getParent())
@@ -138,7 +131,7 @@ BOOL LLGroupDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
         // check if inside
         //LLRect parent_rect = mParentView->getRect();
         //getRect().set(0, parent_rect.getHeight(), parent_rect.getWidth(), 0);
-        handled = TRUE;
+        handled = true;
 
         // check the type
         switch(cargo_type)
@@ -237,18 +230,18 @@ LLPanelGroupNotices::~LLPanelGroupNotices()
 }
 
 
-BOOL LLPanelGroupNotices::isVisibleByAgent(LLAgent* agentp)
+bool LLPanelGroupNotices::isVisibleByAgent(LLAgent* agentp)
 {
     return mAllowEdit &&
         agentp->hasPowerInGroup(mGroupID, GP_NOTICES_SEND | GP_NOTICES_RECEIVE);
 }
 
-BOOL LLPanelGroupNotices::postBuild()
+bool LLPanelGroupNotices::postBuild()
 {
-    bool recurse = true;
+    constexpr bool recurse = true;
 
     mNoticesList = getChild<LLScrollListCtrl>("notice_list",recurse);
-    mNoticesList->setCommitOnSelectionChange(TRUE);
+    mNoticesList->setCommitOnSelectionChange(true);
     mNoticesList->setCommitCallback(onSelectNotice, this);
     mNoticesList->sortByColumn("date", false);
 
@@ -264,29 +257,29 @@ BOOL LLPanelGroupNotices::postBuild()
     mCreateMessage = getChild<LLTextEditor>("create_message",recurse);
 
     mCreateInventoryName =  getChild<LLLineEditor>("create_inventory_name",recurse);
-    mCreateInventoryName->setTabStop(FALSE);
-    mCreateInventoryName->setEnabled(FALSE);
+    mCreateInventoryName->setTabStop(false);
+    mCreateInventoryName->setEnabled(false);
 
     mCreateInventoryIcon = getChild<LLIconCtrl>("create_inv_icon",recurse);
-    mCreateInventoryIcon->setVisible(FALSE);
+    mCreateInventoryIcon->setVisible(false);
 
     mBtnSendMessage = getChild<LLButton>("send_notice",recurse);
     mBtnSendMessage->setClickedCallback(onClickSendMessage, this);
 
     mBtnRemoveAttachment = getChild<LLButton>("remove_attachment",recurse);
     mBtnRemoveAttachment->setClickedCallback(onClickRemoveAttachment, this);
-    mBtnRemoveAttachment->setEnabled(FALSE);
+    mBtnRemoveAttachment->setEnabled(false);
 
     // View
     mViewSubject = getChild<LLLineEditor>("view_subject",recurse);
     mViewMessage = getChild<LLTextEditor>("view_message",recurse);
 
     mViewInventoryName =  getChild<LLLineEditor>("view_inventory_name",recurse);
-    mViewInventoryName->setTabStop(FALSE);
-    mViewInventoryName->setEnabled(FALSE);
+    mViewInventoryName->setTabStop(false);
+    mViewInventoryName->setEnabled(false);
 
     mViewInventoryIcon = getChild<LLIconCtrl>("view_inv_icon",recurse);
-    mViewInventoryIcon->setVisible(FALSE);
+    mViewInventoryIcon->setVisible(false);
 
     mBtnOpenAttachment = getChild<LLButton>("open_attachment",recurse);
     mBtnOpenAttachment->setClickedCallback(onClickOpenAttachment, this);
@@ -315,15 +308,15 @@ void LLPanelGroupNotices::activate()
 
     mPrevSelectedNotice = LLUUID();
 
-    BOOL can_send = gAgent.hasPowerInGroup(mGroupID,GP_NOTICES_SEND);
-    BOOL can_receive = gAgent.hasPowerInGroup(mGroupID,GP_NOTICES_RECEIVE);
+    bool can_send = gAgent.hasPowerInGroup(mGroupID,GP_NOTICES_SEND);
+    bool can_receive = gAgent.hasPowerInGroup(mGroupID,GP_NOTICES_RECEIVE);
 
     mPanelViewNotice->setEnabled(can_receive);
     mPanelCreateNotice->setEnabled(can_send);
 
     // Always disabled to stop direct editing of attachment names
-    mCreateInventoryName->setEnabled(FALSE);
-    mViewInventoryName->setEnabled(FALSE);
+    mCreateInventoryName->setEnabled(false);
+    mViewInventoryName->setEnabled(false);
 
     // If we can receive notices, grab them right away.
     if (can_receive)
@@ -336,10 +329,10 @@ void LLPanelGroupNotices::setItem(LLPointer<LLInventoryItem> inv_item)
 {
     mInventoryItem = inv_item;
 
-    BOOL item_is_multi = FALSE;
+    bool item_is_multi = false;
     if ( inv_item->getFlags() & LLInventoryItemFlags::II_FLAGS_OBJECT_HAS_MULTIPLE_ITEMS )
     {
-        item_is_multi = TRUE;
+        item_is_multi = true;
     };
 
     std::string icon_name = LLInventoryIcon::getIconName(inv_item->getType(),
@@ -348,13 +341,13 @@ void LLPanelGroupNotices::setItem(LLPointer<LLInventoryItem> inv_item)
                                         item_is_multi );
 
     mCreateInventoryIcon->setValue(icon_name);
-    mCreateInventoryIcon->setVisible(TRUE);
+    mCreateInventoryIcon->setVisible(true);
 
     std::stringstream ss;
     ss << "        " << mInventoryItem->getName();
 
     mCreateInventoryName->setText(ss.str());
-    mBtnRemoveAttachment->setEnabled(TRUE);
+    mBtnRemoveAttachment->setEnabled(true);
 }
 
 void LLPanelGroupNotices::onClickRemoveAttachment(void* data)
@@ -362,8 +355,8 @@ void LLPanelGroupNotices::onClickRemoveAttachment(void* data)
     LLPanelGroupNotices* self = (LLPanelGroupNotices*)data;
     self->mInventoryItem = NULL;
     self->mCreateInventoryName->clear();
-    self->mCreateInventoryIcon->setVisible(FALSE);
-    self->mBtnRemoveAttachment->setEnabled(FALSE);
+    self->mCreateInventoryIcon->setVisible(false);
+    self->mBtnRemoveAttachment->setEnabled(false);
 }
 
 //static
@@ -373,7 +366,7 @@ void LLPanelGroupNotices::onClickOpenAttachment(void* data)
 
     self->mInventoryOffer->forceResponse(IOR_ACCEPT);
     self->mInventoryOffer = NULL;
-    self->mBtnOpenAttachment->setEnabled(FALSE);
+    self->mBtnOpenAttachment->setEnabled(false);
 }
 
 void LLPanelGroupNotices::onClickSendMessage(void* data)
@@ -443,7 +436,7 @@ void LLPanelGroupNotices::onClickNewMessage(void* data)
     self->mCreateSubject->clear();
     self->mCreateMessage->clear();
     if (self->mInventoryItem) onClickRemoveAttachment(self);
-    self->mNoticesList->deselectAllItems(TRUE); // TRUE == don't commit on chnage
+    self->mNoticesList->deselectAllItems(true); // true == don't commit on chnage
 }
 
 void LLPanelGroupNotices::refreshNotices()
@@ -509,13 +502,13 @@ void LLPanelGroupNotices::processNotices(LLMessageSystem* msg)
     std::string subj;
     std::string name;
     U32 timestamp;
-    BOOL has_attachment;
+    bool has_attachment;
     U8 asset_type;
 
     S32 i=0;
     S32 count = msg->getNumberOfBlocks("Data");
 
-    mNoticesList->setEnabled(TRUE);
+    mNoticesList->setEnabled(true);
 
     //save sort state and set unsorted state to prevent unnecessary
     //sorting while adding notices
@@ -529,7 +522,7 @@ void LLPanelGroupNotices::processNotices(LLMessageSystem* msg)
         {
             // Only one entry, the dummy entry.
             mNoticesList->setCommentText(mNoNoticesStr);
-            mNoticesList->setEnabled(FALSE);
+            mNoticesList->setEnabled(false);
             return;
         }
 
@@ -635,19 +628,19 @@ void LLPanelGroupNotices::showNotice(const std::string& subject,
                                                 LLInventoryType::IT_TEXTURE);
 
         mViewInventoryIcon->setValue(icon_name);
-        mViewInventoryIcon->setVisible(TRUE);
+        mViewInventoryIcon->setVisible(true);
 
         std::stringstream ss;
         ss << "        " << inventory_name;
 
         mViewInventoryName->setText(ss.str());
-        mBtnOpenAttachment->setEnabled(TRUE);
+        mBtnOpenAttachment->setEnabled(true);
     }
     else
     {
         mViewInventoryName->clear();
-        mViewInventoryIcon->setVisible(FALSE);
-        mBtnOpenAttachment->setEnabled(FALSE);
+        mViewInventoryIcon->setVisible(false);
+        mBtnOpenAttachment->setEnabled(false);
     }
 }
 
@@ -655,14 +648,14 @@ void LLPanelGroupNotices::arrangeNoticeView(ENoticeView view_type)
 {
     if (CREATE_NEW_NOTICE == view_type)
     {
-        mPanelCreateNotice->setVisible(TRUE);
-        mPanelViewNotice->setVisible(FALSE);
+        mPanelCreateNotice->setVisible(true);
+        mPanelViewNotice->setVisible(false);
     }
     else
     {
-        mPanelCreateNotice->setVisible(FALSE);
-        mPanelViewNotice->setVisible(TRUE);
-        mBtnOpenAttachment->setEnabled(FALSE);
+        mPanelCreateNotice->setVisible(false);
+        mPanelViewNotice->setVisible(true);
+        mBtnOpenAttachment->setEnabled(false);
     }
 }
 void LLPanelGroupNotices::setGroupID(const LLUUID& id)
diff --git a/indra/newview/llpanelgroupnotices.h b/indra/newview/llpanelgroupnotices.h
index 11578eef01..6cb04c0593 100644
--- a/indra/newview/llpanelgroupnotices.h
+++ b/indra/newview/llpanelgroupnotices.h
@@ -50,8 +50,8 @@ public:
     //virtual bool apply(std::string& mesg);
     //virtual void update();
 
-    virtual BOOL postBuild();
-    virtual BOOL isVisibleByAgent(LLAgent* agentp);
+    virtual bool postBuild();
+    virtual bool isVisibleByAgent(LLAgent* agentp);
 
     void setItem(LLPointer<LLInventoryItem> inv_item);
 
diff --git a/indra/newview/llpanelgrouproles.cpp b/indra/newview/llpanelgrouproles.cpp
index 89dcd9182e..bc56b49e5d 100644
--- a/indra/newview/llpanelgrouproles.cpp
+++ b/indra/newview/llpanelgrouproles.cpp
@@ -119,7 +119,7 @@ LLPanelGroupRoles::LLPanelGroupRoles()
     mCurrentTab(NULL),
     mRequestedTab( NULL ),
     mSubTabContainer( NULL ),
-    mFirstUse( TRUE )
+    mFirstUse( true )
 {
 }
 
@@ -127,13 +127,13 @@ LLPanelGroupRoles::~LLPanelGroupRoles()
 {
 }
 
-BOOL LLPanelGroupRoles::postBuild()
+bool LLPanelGroupRoles::postBuild()
 {
     LL_DEBUGS() << "LLPanelGroupRoles::postBuild()" << LL_ENDL;
 
     mSubTabContainer = getChild<LLTabContainer>("roles_tab_container");
 
-    if (!mSubTabContainer) return FALSE;
+    if (!mSubTabContainer) return false;
 
     // Hook up each sub-tabs callback and widgets.
     for (S32 i = 0; i < mSubTabContainer->getTabCount(); ++i)
@@ -143,13 +143,13 @@ BOOL LLPanelGroupRoles::postBuild()
         if (!subtabp)
         {
             LL_WARNS() << "Invalid subtab panel: " << panel->getName() << LL_ENDL;
-            return FALSE;
+            return false;
         }
 
         // Hand the subtab a pointer to this LLPanelGroupRoles, so that it can
         // look around for the widgets it is interested in.
         if (!subtabp->postBuildSubTab(this))
-            return FALSE;
+            return false;
 
         //subtabp->addObserver(this);
     }
@@ -165,7 +165,7 @@ BOOL LLPanelGroupRoles::postBuild()
         mCurrentTab = (LLPanelGroupTab*) mSubTabContainer->getCurrentPanel();
     }
 
-    if (!mCurrentTab) return FALSE;
+    if (!mCurrentTab) return false;
 
     // Act as though this tab was just activated.
     mCurrentTab->activate();
@@ -177,7 +177,7 @@ BOOL LLPanelGroupRoles::postBuild()
     return LLPanelGroupTab::postBuild();
 }
 
-BOOL LLPanelGroupRoles::isVisibleByAgent(LLAgent* agentp)
+bool LLPanelGroupRoles::isVisibleByAgent(LLAgent* agentp)
 {
     /* This power was removed to make group roles simpler
     return agentp->hasPowerInGroup(mGroupID,
@@ -221,9 +221,9 @@ bool LLPanelGroupRoles::handleSubTabSwitch(const LLSD& data)
         args["WANT_APPLY_MESSAGE"] = mWantApplyMesg;
         LLNotificationsUtil::add("PanelGroupApply", args, LLSD(),
             boost::bind(&LLPanelGroupRoles::handleNotifyCallback, this, _1, _2));
-        mHasModal = TRUE;
+        mHasModal = true;
 
-        // Returning FALSE will block a close action from finishing until
+        // Returning false will block a close action from finishing until
         // we get a response back from the user.
         return false;
     }
@@ -253,7 +253,7 @@ void LLPanelGroupRoles::transitionToTab()
 bool LLPanelGroupRoles::handleNotifyCallback(const LLSD& notification, const LLSD& response)
 {
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
-    mHasModal = FALSE;
+    mHasModal = false;
     LLPanelGroupTab* transition_tab = mRequestedTab;
     switch (option)
     {
@@ -266,7 +266,7 @@ bool LLPanelGroupRoles::handleNotifyCallback(const LLSD& notification, const LLS
             // There was a problem doing the apply.
             if ( !apply_mesg.empty() )
             {
-                mHasModal = TRUE;
+                mHasModal = true;
                 LLSD args;
                 args["MESSAGE"] = apply_mesg;
                 LLNotificationsUtil::add("GenericAlert", args, LLSD(), boost::bind(&LLPanelGroupRoles::onModalClose, this, _1, _2));
@@ -296,7 +296,7 @@ bool LLPanelGroupRoles::handleNotifyCallback(const LLSD& notification, const LLS
 
 bool LLPanelGroupRoles::onModalClose(const LLSD& notification, const LLSD& response)
 {
-    mHasModal = FALSE;
+    mHasModal = false;
     return false;
 }
 
@@ -369,7 +369,7 @@ void LLPanelGroupRoles::activate()
         LLGroupMgr::getInstance()->sendGroupPropertiesRequest(mGroupID);
     }
 
-    mFirstUse = FALSE;
+    mFirstUse = false;
 
     LLPanelGroupTab* panelp = (LLPanelGroupTab*) mSubTabContainer->getCurrentPanel();
     if (panelp) panelp->activate();
@@ -389,12 +389,12 @@ bool LLPanelGroupRoles::needsApply(std::string& mesg)
     return panelp->needsApply(mesg);
 }
 
-BOOL LLPanelGroupRoles::hasModal()
+bool LLPanelGroupRoles::hasModal()
 {
-    if (mHasModal) return TRUE;
+    if (mHasModal) return true;
 
     LLPanelGroupTab* panelp = (LLPanelGroupTab*) mSubTabContainer->getCurrentPanel();
-    if (!panelp) return FALSE;
+    if (!panelp) return false;
 
     return panelp->hasModal();
 }
@@ -419,7 +419,7 @@ void LLPanelGroupRoles::setGroupID(const LLUUID& id)
 
     if(mSubTabContainer)
         mSubTabContainer->selectTab(1);
-    group_roles_tab->mFirstOpen = TRUE;
+    group_roles_tab->mFirstOpen = true;
     activate();
 }
 
@@ -437,9 +437,10 @@ LLPanelGroupSubTab::LLPanelGroupSubTab()
 
 LLPanelGroupSubTab::~LLPanelGroupSubTab()
 {
+    mSearchCommitConnection.disconnect();
 }
 
-BOOL LLPanelGroupSubTab::postBuildSubTab(LLView* root)
+bool LLPanelGroupSubTab::postBuildSubTab(LLView* root)
 {
     // Get icons for later use.
     mActionIcons.clear();
@@ -458,18 +459,19 @@ BOOL LLPanelGroupSubTab::postBuildSubTab(LLView* root)
     {
         mActionIcons["partial"] = getString("power_partial_icon");
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLPanelGroupSubTab::postBuild()
+bool LLPanelGroupSubTab::postBuild()
 {
     // Hook up the search widgets.
-    bool recurse = true;
+    constexpr bool recurse = true;
 
     mSearchEditor = findChild<LLFilterEditor>("filter_input", recurse);
     if (mSearchEditor) // SubTab doesn't implement this, only some of derived classes
     {
-        mSearchEditor->setCommitCallback(boost::bind(&LLPanelGroupSubTab::setSearchFilter, this, _2));
+        // panel
+        mSearchCommitConnection = mSearchEditor->setCommitCallback(boost::bind(&LLPanelGroupSubTab::setSearchFilter, this, _2));
     }
 
     return LLPanelGroupTab::postBuild();
@@ -499,15 +501,15 @@ void LLPanelGroupSubTab::setSearchFilter(const std::string& filter)
 
 void LLPanelGroupSubTab::activate()
 {
-    setOthersVisible(TRUE);
+    setOthersVisible(true);
 }
 
 void LLPanelGroupSubTab::deactivate()
 {
-    setOthersVisible(FALSE);
+    setOthersVisible(false);
 }
 
-void LLPanelGroupSubTab::setOthersVisible(BOOL b)
+void LLPanelGroupSubTab::setOthersVisible(bool b)
 {
     if (mHeader)
     {
@@ -543,9 +545,9 @@ void LLPanelGroupSubTab::buildActionsList(LLScrollListCtrl* ctrl,
                                           U64 allowed_by_some,
                                           U64 allowed_by_all,
                                           LLUICtrl::commit_callback_t commit_callback,
-                                          BOOL show_all,
-                                          BOOL filter,
-                                          BOOL is_owner_role)
+                                          bool show_all,
+                                          bool filter,
+                                          bool is_owner_role)
 {
     if (LLGroupMgr::getInstance()->mRoleActionSets.empty())
     {
@@ -575,9 +577,9 @@ void LLPanelGroupSubTab::buildActionCategory(LLScrollListCtrl* ctrl,
                                              U64 allowed_by_all,
                                              LLRoleActionSet* action_set,
                                              LLUICtrl::commit_callback_t commit_callback,
-                                             BOOL show_all,
-                                             BOOL filter,
-                                             BOOL is_owner_role)
+                                             bool show_all,
+                                             bool filter,
+                                             bool is_owner_role)
 {
     LL_DEBUGS() << "Building role list for: " << action_set->mActionSetData->mName << LL_ENDL;
     // See if the allow mask matches anything in this category.
@@ -613,7 +615,7 @@ void LLPanelGroupSubTab::buildActionCategory(LLScrollListCtrl* ctrl,
         std::vector<LLRoleAction*>::iterator ra_end = action_set->mActions.end();
 
         bool items_match_filter = false;
-        BOOL can_change_actions = (!is_owner_role && gAgent.hasPowerInGroup(mGroupID, GP_ROLE_CHANGE_ACTIONS));
+        bool can_change_actions = (!is_owner_role && gAgent.hasPowerInGroup(mGroupID, GP_ROLE_CHANGE_ACTIONS));
 
         for ( ; ra_it != ra_end; ++ra_it)
         {
@@ -724,26 +726,26 @@ void LLPanelGroupSubTab::buildActionCategory(LLScrollListCtrl* ctrl,
 
                 if (show_all)
                 {
-                    check->setTentative(FALSE);
+                    check->setTentative(false);
                     if (allowed_by_some & (*ra_it)->mPowerBit)
                     {
-                        check->set(TRUE);
+                        check->set(true);
                     }
                     else
                     {
-                        check->set(FALSE);
+                        check->set(false);
                     }
                 }
                 else
                 {
-                    check->set(TRUE);
+                    check->set(true);
                     if (show_full_strength)
                     {
-                        check->setTentative(FALSE);
+                        check->setTentative(false);
                     }
                     else
                     {
-                        check->setTentative(TRUE);
+                        check->setTentative(true);
                     }
                 }
 
@@ -766,7 +768,7 @@ void LLPanelGroupSubTab::buildActionCategory(LLScrollListCtrl* ctrl,
     }
 }
 
-void LLPanelGroupSubTab::setFooterEnabled(BOOL enable)
+void LLPanelGroupSubTab::setFooterEnabled(bool enable)
 {
     if (mFooter)
     {
@@ -783,9 +785,9 @@ LLPanelGroupMembersSubTab::LLPanelGroupMembersSubTab()
     mMembersList(NULL),
     mAssignedRolesList(NULL),
     mAllowedActionsList(NULL),
-    mChanged(FALSE),
-    mPendingMemberUpdate(FALSE),
-    mHasMatch(FALSE),
+    mChanged(false),
+    mPendingMemberUpdate(false),
+    mHasMatch(false),
     mNumOwnerAdditions(0)
 {
 }
@@ -806,7 +808,7 @@ LLPanelGroupMembersSubTab::~LLPanelGroupMembersSubTab()
     }
 }
 
-BOOL LLPanelGroupMembersSubTab::postBuildSubTab(LLView* root)
+bool LLPanelGroupMembersSubTab::postBuildSubTab(LLView* root)
 {
     LLPanelGroupSubTab::postBuildSubTab(root);
 
@@ -823,13 +825,13 @@ BOOL LLPanelGroupMembersSubTab::postBuildSubTab(LLView* root)
     mAllowedActionsList = parent->getChild<LLScrollListCtrl>("member_allowed_actions", recurse);
     mActionDescription = parent->getChild<LLTextEditor>("member_action_description", recurse);
 
-    if (!mMembersList || !mAssignedRolesList || !mAllowedActionsList || !mActionDescription) return FALSE;
+    if (!mMembersList || !mAssignedRolesList || !mAllowedActionsList || !mActionDescription) return false;
 
-    mAllowedActionsList->setCommitOnSelectionChange(TRUE);
+    mAllowedActionsList->setCommitOnSelectionChange(true);
     mAllowedActionsList->setCommitCallback(boost::bind(&LLPanelGroupMembersSubTab::updateActionDescription, this));
 
     // We want to be notified whenever a member is selected.
-    mMembersList->setCommitOnSelectionChange(TRUE);
+    mMembersList->setCommitOnSelectionChange(true);
     mMembersList->setCommitCallback(onMemberSelect, this);
     // Show the member's profile on double click.
     mMembersList->setDoubleClickCallback(onMemberDoubleClick, this);
@@ -844,7 +846,7 @@ BOOL LLPanelGroupMembersSubTab::postBuildSubTab(LLView* root)
     std::string order_by = gSavedSettings.getString("GroupMembersSortOrder");
     if(!order_by.empty())
     {
-        mMembersList->sortByColumn(order_by, TRUE);
+        mMembersList->sortByColumn(order_by, true);
     }
 
     LLButton* button = parent->getChild<LLButton>("member_invite", recurse);
@@ -858,17 +860,17 @@ BOOL LLPanelGroupMembersSubTab::postBuildSubTab(LLView* root)
     if ( mEjectBtn )
     {
         mEjectBtn->setClickedCallback(onEjectMembers, this);
-        mEjectBtn->setEnabled(FALSE);
+        mEjectBtn->setEnabled(false);
     }
 
     mBanBtn = parent->getChild<LLButton>("member_ban", recurse);
     if(mBanBtn)
     {
         mBanBtn->setClickedCallback(onBanMember, this);
-        mBanBtn->setEnabled(FALSE);
+        mBanBtn->setEnabled(false);
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelGroupMembersSubTab::setGroupID(const LLUUID& id)
@@ -936,9 +938,9 @@ void LLPanelGroupMembersSubTab::handleMemberSelect()
                      allowed_by_some,
                      allowed_by_all,
                      NULL,
-                     FALSE,
-                     FALSE,
-                     FALSE);
+                     false,
+                     false,
+                     false);
 
     //////////////////////////////////
     // Build the assigned roles list.
@@ -947,9 +949,9 @@ void LLPanelGroupMembersSubTab::handleMemberSelect()
     LLGroupMgrGroupData::role_list_t::iterator iter = gdatap->mRoles.begin();
     LLGroupMgrGroupData::role_list_t::iterator end  = gdatap->mRoles.end();
 
-    BOOL can_ban_members = gAgent.hasPowerInGroup(mGroupID, GP_GROUP_BAN_ACCESS);
-    BOOL can_eject_members = gAgent.hasPowerInGroup(mGroupID, GP_MEMBER_EJECT);
-    BOOL member_is_owner = FALSE;
+    bool can_ban_members = gAgent.hasPowerInGroup(mGroupID, GP_GROUP_BAN_ACCESS);
+    bool can_eject_members = gAgent.hasPowerInGroup(mGroupID, GP_MEMBER_EJECT);
+    bool member_is_owner = false;
 
     for( ; iter != end; ++iter)
     {
@@ -959,14 +961,14 @@ void LLPanelGroupMembersSubTab::handleMemberSelect()
 
         if (group_role_data)
         {
-            const BOOL needs_sort = FALSE;
+            const bool needs_sort = false;
             S32 count = group_role_data->getMembersInRole(
                                             selected_members, needs_sort);
             //check if the user has permissions to assign/remove
             //members to/from the role (but the ability to add/remove
             //should only be based on the "saved" changes to the role
             //not in the temp/meta data. -jwolk
-            BOOL cb_enable = ( (count > 0) ?
+            bool cb_enable = ( (count > 0) ?
                                agentCanRemoveFromRole(mGroupID, role_id) :
                                agentCanAddToRole(mGroupID, role_id) );
 
@@ -994,8 +996,8 @@ void LLPanelGroupMembersSubTab::handleMemberSelect()
                     if ( member_data && member_data->isInRole(gdatap->mOwnerRole) )
                     {
                         // Can't remove other owners.
-                        cb_enable = FALSE;
-                        can_ban_members = FALSE;
+                        cb_enable = false;
+                        can_ban_members = false;
                         break;
                     }
                 }
@@ -1017,10 +1019,10 @@ void LLPanelGroupMembersSubTab::handleMemberSelect()
             // If anyone selected is in any role besides 'Everyone' then they can't be ejected.
             if (role_id.notNull() && (count > 0))
             {
-                can_eject_members = FALSE;
+                can_eject_members = false;
                 if (role_id == gdatap->mOwnerRole)
                 {
-                    member_is_owner = TRUE;
+                    member_is_owner = true;
                 }
             }
 
@@ -1076,12 +1078,12 @@ void LLPanelGroupMembersSubTab::handleMemberSelect()
             LL_WARNS() << "No group role data for " << iter->second << LL_ENDL;
         }
     }
-    mAssignedRolesList->setEnabled(TRUE);
+    mAssignedRolesList->setEnabled(true);
 
     if (gAgent.isGodlike())
     {
-        can_eject_members = TRUE;
-    //  can_ban_members = TRUE;
+        can_eject_members = true;
+    //  can_ban_members = true;
     }
 
     if (!can_eject_members && !member_is_owner)
@@ -1094,8 +1096,8 @@ void LLPanelGroupMembersSubTab::handleMemberSelect()
 
             if ( member_data && member_data->isInRole(gdatap->mOwnerRole) )
             {
-                can_eject_members = TRUE;
-                //can_ban_members = TRUE;
+                can_eject_members = true;
+                //can_ban_members = true;
             }
         }
 
@@ -1107,12 +1109,12 @@ void LLPanelGroupMembersSubTab::handleMemberSelect()
     {
         if( gAgent.hasPowerInGroup(mGroupID, GP_MEMBER_EJECT))
         {
-            can_eject_members = TRUE;
+            can_eject_members = true;
         }
 
         if( gAgent.hasPowerInGroup(mGroupID, GP_GROUP_BAN_ACCESS))
         {
-            can_ban_members = TRUE;
+            can_ban_members = true;
         }
     }
 
@@ -1124,8 +1126,8 @@ void LLPanelGroupMembersSubTab::handleMemberSelect()
         // Don't count the agent.
         if ((*member_iter) == gAgent.getID())
         {
-            can_eject_members = FALSE;
-            can_ban_members = FALSE;
+            can_eject_members = false;
+            can_ban_members = false;
         }
     }
 
@@ -1171,7 +1173,7 @@ void LLPanelGroupMembersSubTab::confirmEjectMembers()
     std::vector<LLScrollListItem*> selection = mMembersList->getAllSelected();
     if (selection.empty()) return;
 
-    S32 selection_count = selection.size();
+    auto selection_count = selection.size();
     if (selection_count == 1)
     {
         LLSD args;
@@ -1257,7 +1259,7 @@ void LLPanelGroupMembersSubTab::handleRoleCheck(const LLUUID& role_id,
     U64 powers_all_have  = GP_ALL_POWERS;
     U64 powers_some_have = 0;
 
-    BOOL   is_owner_role = ( gdatap->mOwnerRole == role_id );
+    bool   is_owner_role = ( gdatap->mOwnerRole == role_id );
     LLUUID member_id;
 
     std::vector<LLScrollListItem*> selection = mMembersList->getAllSelected();
@@ -1329,9 +1331,9 @@ void LLPanelGroupMembersSubTab::handleRoleCheck(const LLUUID& role_id,
                      powers_some_have,
                      powers_all_have,
                      NULL,
-                     FALSE,
-                     FALSE,
-                     FALSE);
+                     false,
+                     false,
+                     false);
 }
 
 // static
@@ -1414,7 +1416,7 @@ void LLPanelGroupMembersSubTab::cancel()
                       DeletePairedPointer());
         mMemberRoleChangeData.clear();
 
-        mChanged = FALSE;
+        mChanged = false;
         notifyObservers();
     }
 }
@@ -1441,7 +1443,7 @@ bool LLPanelGroupMembersSubTab::apply(std::string& mesg)
 
             if ( gdatap->getRoleData(gdatap->mOwnerRole, rd) )
             {
-                mHasModal = TRUE;
+                mHasModal = true;
                 args["ROLE_NAME"] = rd.mRoleName;
                 LLNotificationsUtil::add("AddGroupOwnerWarning",
                                         args,
@@ -1469,7 +1471,7 @@ bool LLPanelGroupMembersSubTab::apply(std::string& mesg)
 bool LLPanelGroupMembersSubTab::addOwnerCB(const LLSD& notification, const LLSD& response)
 {
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
-    mHasModal = FALSE;
+    mHasModal = false;
 
     if (0 == option)
     {
@@ -1512,7 +1514,7 @@ void LLPanelGroupMembersSubTab::applyMemberChanges()
     //force a UI update
     handleMemberSelect();
 
-    mChanged = FALSE;
+    mChanged = false;
     mNumOwnerAdditions = 0;
     notifyObservers();
 }
@@ -1680,8 +1682,8 @@ void LLPanelGroupMembersSubTab::update(LLGroupChange gc)
         && gdatap->isRoleMemberDataComplete())
     {
         mMemberProgress = gdatap->mMembers.begin();
-        mPendingMemberUpdate = TRUE;
-        mHasMatch = FALSE;
+        mPendingMemberUpdate = true;
+        mHasMatch = false;
     }
     else
     {
@@ -1710,7 +1712,7 @@ void LLPanelGroupMembersSubTab::update(LLGroupChange gc)
             // Still busy retreiving role/member mappings.
             retrieved << "Retrieving role member mappings...";
         }
-        mMembersList->setEnabled(FALSE);
+        mMembersList->setEnabled(false);
         mMembersList->setCommentText(retrieved.str());
     }
 }
@@ -1736,7 +1738,7 @@ void LLPanelGroupMembersSubTab::addMemberToList(LLGroupMemberData* data)
 
     mMembersList->addNameItemRow(item_params);
 
-    mHasMatch = TRUE;
+    mHasMatch = true;
 }
 
 void LLPanelGroupMembersSubTab::onNameCache(const LLUUID& update_id, LLGroupMemberData* member, const LLAvatarName& av_name, const LLUUID& av_id)
@@ -1765,7 +1767,7 @@ void LLPanelGroupMembersSubTab::onNameCache(const LLUUID& update_id, LLGroupMemb
         addMemberToList(member);
         if(!mMembersList->getEnabled())
         {
-            mMembersList->setEnabled(TRUE);
+            mMembersList->setEnabled(true);
         }
     }
 
@@ -1773,7 +1775,7 @@ void LLPanelGroupMembersSubTab::onNameCache(const LLUUID& update_id, LLGroupMemb
 
 void LLPanelGroupMembersSubTab::updateMembers()
 {
-    mPendingMemberUpdate = FALSE;
+    mPendingMemberUpdate = false;
 
     // Rebuild the members list.
 
@@ -1838,17 +1840,17 @@ void LLPanelGroupMembersSubTab::updateMembers()
     {
         if (mHasMatch)
         {
-            mMembersList->setEnabled(TRUE);
+            mMembersList->setEnabled(true);
         }
         else if (gdatap->mMembers.size())
         {
-            mMembersList->setEnabled(FALSE);
+            mMembersList->setEnabled(false);
             mMembersList->setCommentText(std::string("No match."));
         }
     }
     else
     {
-        mPendingMemberUpdate = TRUE;
+        mPendingMemberUpdate = true;
     }
 
     // This should clear the other two lists, since nothing is selected.
@@ -1866,7 +1868,7 @@ void LLPanelGroupMembersSubTab::confirmBanMembers()
     std::vector<LLScrollListItem*> selection = mMembersList->getAllSelected();
     if (selection.empty()) return;
 
-    S32 selection_count = selection.size();
+    auto selection_count = selection.size();
     if (selection_count == 1)
     {
         LLSD args;
@@ -1964,8 +1966,8 @@ LLPanelGroupRolesSubTab::LLPanelGroupRolesSubTab()
     mDeleteRoleButton(NULL),
     mCopyRoleButton(NULL),
     mCreateRoleButton(NULL),
-    mFirstOpen(TRUE),
-    mHasRoleChange(FALSE)
+    mFirstOpen(true),
+    mHasRoleChange(false)
 {
 }
 
@@ -1973,7 +1975,7 @@ LLPanelGroupRolesSubTab::~LLPanelGroupRolesSubTab()
 {
 }
 
-BOOL LLPanelGroupRolesSubTab::postBuildSubTab(LLView* root)
+bool LLPanelGroupRolesSubTab::postBuildSubTab(LLView* root)
 {
     LLPanelGroupSubTab::postBuildSubTab(root);
 
@@ -2001,7 +2003,7 @@ BOOL LLPanelGroupRolesSubTab::postBuildSubTab(LLView* root)
         || !mRoleName || !mRoleTitle || !mRoleDescription || !mMemberVisibleCheck)
     {
         LL_WARNS() << "ARG! element not found." << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     mRemoveEveryoneTxt = getString("cant_delete_role");
@@ -2011,7 +2013,7 @@ BOOL LLPanelGroupRolesSubTab::postBuildSubTab(LLView* root)
     if ( mCreateRoleButton )
     {
         mCreateRoleButton->setClickedCallback(onCreateRole, this);
-        mCreateRoleButton->setEnabled(FALSE);
+        mCreateRoleButton->setEnabled(false);
     }
 
     mCopyRoleButton =
@@ -2019,7 +2021,7 @@ BOOL LLPanelGroupRolesSubTab::postBuildSubTab(LLView* root)
     if ( mCopyRoleButton )
     {
         mCopyRoleButton->setClickedCallback(onCopyRole, this);
-        mCopyRoleButton->setEnabled(FALSE);
+        mCopyRoleButton->setEnabled(false);
     }
 
     mDeleteRoleButton =
@@ -2027,31 +2029,31 @@ BOOL LLPanelGroupRolesSubTab::postBuildSubTab(LLView* root)
     if ( mDeleteRoleButton )
     {
         mDeleteRoleButton->setClickedCallback(onDeleteRole, this);
-        mDeleteRoleButton->setEnabled(FALSE);
+        mDeleteRoleButton->setEnabled(false);
     }
 
-    mRolesList->setCommitOnSelectionChange(TRUE);
+    mRolesList->setCommitOnSelectionChange(true);
     mRolesList->setCommitCallback(onRoleSelect, this);
 
     mAssignedMembersList->setContextMenu(LLScrollListCtrl::MENU_AVATAR);
 
     mMemberVisibleCheck->setCommitCallback(onMemberVisibilityChange, this);
 
-    mAllowedActionsList->setCommitOnSelectionChange(TRUE);
+    mAllowedActionsList->setCommitOnSelectionChange(true);
     mAllowedActionsList->setCommitCallback(boost::bind(&LLPanelGroupRolesSubTab::updateActionDescription, this));
 
-    mRoleName->setCommitOnFocusLost(TRUE);
+    mRoleName->setCommitOnFocusLost(true);
     mRoleName->setKeystrokeCallback(onPropertiesKey, this);
 
-    mRoleTitle->setCommitOnFocusLost(TRUE);
+    mRoleTitle->setCommitOnFocusLost(true);
     mRoleTitle->setKeystrokeCallback(onPropertiesKey, this);
 
-    mRoleDescription->setCommitOnFocusLost(TRUE);
+    mRoleDescription->setCommitOnFocusLost(true);
     mRoleDescription->setKeystrokeCallback(boost::bind(&LLPanelGroupRolesSubTab::onDescriptionKeyStroke, this, _1));
 
-    setFooterEnabled(FALSE);
+    setFooterEnabled(false);
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelGroupRolesSubTab::activate()
@@ -2066,9 +2068,9 @@ void LLPanelGroupRolesSubTab::activate()
     mRoleDescription->clear();
     mRoleTitle->clear();
 
-    setFooterEnabled(FALSE);
+    setFooterEnabled(false);
 
-    mHasRoleChange = FALSE;
+    mHasRoleChange = false;
     update(GC_ALL);
 }
 
@@ -2077,7 +2079,7 @@ void LLPanelGroupRolesSubTab::deactivate()
     LL_DEBUGS() << "LLPanelGroupRolesSubTab::deactivate()" << LL_ENDL;
 
     LLPanelGroupSubTab::deactivate();
-    mFirstOpen = FALSE;
+    mFirstOpen = false;
 }
 
 bool LLPanelGroupRolesSubTab::needsApply(std::string& mesg)
@@ -2101,7 +2103,7 @@ bool LLPanelGroupRolesSubTab::apply(std::string& mesg)
     LL_DEBUGS() << "LLPanelGroupRolesSubTab::apply()" << LL_ENDL;
 
     saveRoleChanges(true);
-    mFirstOpen = FALSE;
+    mFirstOpen = false;
     LLGroupMgr::getInstance()->sendGroupRoleChanges(mGroupID);
 
     notifyObservers();
@@ -2111,7 +2113,7 @@ bool LLPanelGroupRolesSubTab::apply(std::string& mesg)
 
 void LLPanelGroupRolesSubTab::cancel()
 {
-    mHasRoleChange = FALSE;
+    mHasRoleChange = false;
     LLGroupMgr::getInstance()->cancelGroupRoleChanges(mGroupID);
 
     notifyObservers();
@@ -2195,12 +2197,12 @@ void LLPanelGroupRolesSubTab::update(LLGroupChange gc)
                 if (matchesSearchFilter(rd.mRoleName, rd.mRoleTitle))
                 {
                     // If this is the everyone role, then EVERYONE is in it.
-                    S32 members_in_role = (*rit).first.isNull() ? gdatap->mMembers.size() : (*rit).second->getTotalMembersInRole();
+                    S32 members_in_role = (*rit).first.isNull() ? static_cast<S32>(gdatap->mMembers.size()) : (*rit).second->getTotalMembersInRole();
                     LLSD row = createRoleItem((*rit).first,rd.mRoleName, rd.mRoleTitle, members_in_role);
                     item = mRolesList->addElement(row, ((*rit).first.isNull()) ? ADD_TOP : ADD_BOTTOM, this);
                     if (had_selection && ((*rit).first == last_selected))
                     {
-                        item->setSelected(TRUE);
+                        item->setSelected(true);
                     }
                 }
             }
@@ -2210,16 +2212,16 @@ void LLPanelGroupRolesSubTab::update(LLGroupChange gc)
             }
         }
 
-        mRolesList->sortByColumn(std::string("name"), TRUE);
+        mRolesList->sortByColumn(std::string("name"), true);
 
         if ( (gdatap->mRoles.size() < (U32)MAX_ROLES)
             && gAgent.hasPowerInGroup(mGroupID, GP_ROLE_CREATE) )
         {
-            mCreateRoleButton->setEnabled(TRUE);
+            mCreateRoleButton->setEnabled(true);
         }
         else
         {
-            mCreateRoleButton->setEnabled(FALSE);
+            mCreateRoleButton->setEnabled(false);
         }
 
         if (had_selection)
@@ -2233,9 +2235,9 @@ void LLPanelGroupRolesSubTab::update(LLGroupChange gc)
             mRoleName->clear();
             mRoleDescription->clear();
             mRoleTitle->clear();
-            setFooterEnabled(FALSE);
-            mDeleteRoleButton->setEnabled(FALSE);
-            mCopyRoleButton->setEnabled(FALSE);
+            setFooterEnabled(false);
+            mDeleteRoleButton->setEnabled(false);
+            mCopyRoleButton->setEnabled(false);
         }
     }
 
@@ -2260,7 +2262,7 @@ void LLPanelGroupRolesSubTab::onRoleSelect(LLUICtrl* ctrl, void* user_data)
 
 void LLPanelGroupRolesSubTab::handleRoleSelect()
 {
-    BOOL can_delete = TRUE;
+    bool can_delete = true;
     LL_DEBUGS() << "LLPanelGroupRolesSubTab::handleRoleSelect()" << LL_ENDL;
 
     mAssignedMembersList->deleteAllItems();
@@ -2280,16 +2282,16 @@ void LLPanelGroupRolesSubTab::handleRoleSelect()
     LLScrollListItem* item = mRolesList->getFirstSelected();
     if (!item)
     {
-        setFooterEnabled(FALSE);
+        setFooterEnabled(false);
         return;
     }
 
-    setFooterEnabled(TRUE);
+    setFooterEnabled(true);
 
     LLRoleData rd;
     if (gdatap->getRoleData(item->getUUID(),rd))
     {
-        BOOL is_owner_role = ( gdatap->mOwnerRole == item->getUUID() );
+        bool is_owner_role = ( gdatap->mOwnerRole == item->getUUID() );
         mRoleName->setText(rd.mRoleName);
         mRoleTitle->setText(rd.mRoleTitle);
         mRoleDescription->setText(rd.mRoleDescription);
@@ -2300,8 +2302,8 @@ void LLPanelGroupRolesSubTab::handleRoleSelect()
                          rd.mRolePowers,
                          0LL,
                          boost::bind(&LLPanelGroupRolesSubTab::handleActionCheck, this, _1, false),
-                         TRUE,
-                         FALSE,
+                         true,
+                         false,
                          is_owner_role);
 
 
@@ -2314,9 +2316,9 @@ void LLPanelGroupRolesSubTab::handleRoleSelect()
         if ( is_owner_role )
             {
                 // you can't delete the owner role
-                can_delete = FALSE;
+                can_delete = false;
                 // ... or hide members with this role
-                mMemberVisibleCheck->setEnabled(FALSE);
+                mMemberVisibleCheck->setEnabled(false);
             }
         else
             {
@@ -2326,9 +2328,9 @@ void LLPanelGroupRolesSubTab::handleRoleSelect()
         if (item->getUUID().isNull())
         {
             // Everyone role, can't edit description or name or delete
-            mRoleDescription->setEnabled(FALSE);
-            mRoleName->setEnabled(FALSE);
-            can_delete = FALSE;
+            mRoleDescription->setEnabled(false);
+            mRoleName->setEnabled(false);
+            can_delete = false;
         }
     }
     else
@@ -2339,9 +2341,9 @@ void LLPanelGroupRolesSubTab::handleRoleSelect()
         mRoleName->clear();
         mRoleDescription->clear();
         mRoleTitle->clear();
-        setFooterEnabled(FALSE);
+        setFooterEnabled(false);
 
-        can_delete = FALSE;
+        can_delete = false;
     }
     mSelectedRole = item->getUUID();
     buildMembersList();
@@ -2445,7 +2447,7 @@ void LLPanelGroupRolesSubTab::handleActionCheck(LLUICtrl* ctrl, bool force)
     {
         // Uncheck the item, for now.  It will be
         // checked if they click 'Yes', below.
-        check->set(FALSE);
+        check->set(false);
 
         LLRoleData rd;
         LLSD args;
@@ -2454,7 +2456,7 @@ void LLPanelGroupRolesSubTab::handleActionCheck(LLUICtrl* ctrl, bool force)
         {
             args["ACTION_NAME"] = rap->mDescription;
             args["ROLE_NAME"] = rd.mRoleName;
-            mHasModal = TRUE;
+            mHasModal = true;
             std::string warning = "AssignDangerousActionWarning";
             if (GP_ROLE_CHANGE_ACTIONS == power)
             {
@@ -2481,7 +2483,7 @@ void LLPanelGroupRolesSubTab::handleActionCheck(LLUICtrl* ctrl, bool force)
         {
             args["ACTION_NAME"] = rap->mDescription;
             args["ROLE_NAME"] = rd.mRoleName;
-            mHasModal = TRUE;
+            mHasModal = true;
 
             std::vector<LLScrollListItem*> all_data = mAllowedActionsList->getAllData();
             std::vector<LLScrollListItem*>::iterator ad_it = all_data.begin();
@@ -2527,9 +2529,9 @@ void LLPanelGroupRolesSubTab::handleActionCheck(LLUICtrl* ctrl, bool force)
             current_role_powers,
             current_role_powers,
             boost::bind(&LLPanelGroupRolesSubTab::handleActionCheck, this, _1, false),
-            TRUE,
-            FALSE,
-            FALSE);
+            true,
+            false,
+            false);
 
     }
 
@@ -2545,7 +2547,7 @@ void LLPanelGroupRolesSubTab::handleActionCheck(LLUICtrl* ctrl, bool force)
         gdatap->removeRolePower(role_id,power);
     }
 
-    mHasRoleChange = TRUE;
+    mHasRoleChange = true;
     notifyObservers();
 
 }
@@ -2554,13 +2556,13 @@ bool LLPanelGroupRolesSubTab::addActionCB(const LLSD& notification, const LLSD&
 {
     if (!check) return false;
 
-    mHasModal = FALSE;
+    mHasModal = false;
 
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
     if (0 == option)
     {
         // User clicked "Yes"
-        check->set(TRUE);
+        check->set(true);
         const bool force_add = true;
         handleActionCheck(check, force_add);
     }
@@ -2573,13 +2575,13 @@ void LLPanelGroupRolesSubTab::onPropertiesKey(LLLineEditor* ctrl, void* user_dat
     LLPanelGroupRolesSubTab* self = static_cast<LLPanelGroupRolesSubTab*>(user_data);
     if (!self) return;
 
-    self->mHasRoleChange = TRUE;
+    self->mHasRoleChange = true;
     self->notifyObservers();
 }
 
 void LLPanelGroupRolesSubTab::onDescriptionKeyStroke(LLTextEditor* caller)
 {
-    mHasRoleChange = TRUE;
+    mHasRoleChange = true;
     notifyObservers();
 }
 
@@ -2589,7 +2591,7 @@ void LLPanelGroupRolesSubTab::onDescriptionCommit(LLUICtrl* ctrl, void* user_dat
     LLPanelGroupRolesSubTab* self = static_cast<LLPanelGroupRolesSubTab*>(user_data);
     if (!self) return;
 
-    self->mHasRoleChange = TRUE;
+    self->mHasRoleChange = true;
     self->notifyObservers();
 }
 
@@ -2653,7 +2655,7 @@ void LLPanelGroupRolesSubTab::handleCreateRole()
     rd.mRoleName = "New Role";
     gdatap->createRole(new_role_id,rd);
 
-    mRolesList->deselectAllItems(TRUE);
+    mRolesList->deselectAllItems(true);
     LLSD row;
     row["id"] = new_role_id;
     row["columns"][0]["column"] = "name";
@@ -2664,7 +2666,7 @@ void LLPanelGroupRolesSubTab::handleCreateRole()
     // put focus on name field and select its contents
     if(mRoleName)
     {
-        mRoleName->setFocus(TRUE);
+        mRoleName->setFocus(true);
         mRoleName->onTabInto();
         gFocusMgr.triggerFocusFlash();
     }
@@ -2704,7 +2706,7 @@ void LLPanelGroupRolesSubTab::handleCopyRole()
     rd.mRoleName += "(Copy)";
     gdatap->createRole(new_role_id,rd);
 
-    mRolesList->deselectAllItems(TRUE);
+    mRolesList->deselectAllItems(true);
     LLSD row;
     row["id"] = new_role_id;
     row["columns"][0]["column"] = "name";
@@ -2715,7 +2717,7 @@ void LLPanelGroupRolesSubTab::handleCopyRole()
     // put focus on name field and select its contents
     if(mRoleName)
     {
-        mRoleName->setFocus(TRUE);
+        mRoleName->setFocus(true);
         mRoleName->onTabInto();
         gFocusMgr.triggerFocusFlash();
     }
@@ -2792,7 +2794,7 @@ void LLPanelGroupRolesSubTab::saveRoleChanges(bool select_saved_role)
         LLScrollListItem* item = mRolesList->addElement(row, ADD_BOTTOM, this);
         item->setSelected(select_saved_role);
 
-        mHasRoleChange = FALSE;
+        mHasRoleChange = false;
     }
 }
 
@@ -2823,9 +2825,9 @@ void LLPanelGroupRolesSubTab::setGroupID(const LLUUID& id)
     if(mRoleDescription) mRoleDescription->clear();
     if(mRoleTitle) mRoleTitle->clear();
 
-    mHasRoleChange = FALSE;
+    mHasRoleChange = false;
 
-    setFooterEnabled(FALSE);
+    setFooterEnabled(false);
 
     LLPanelGroupSubTab::setGroupID(id);
 }
@@ -2843,7 +2845,7 @@ LLPanelGroupActionsSubTab::~LLPanelGroupActionsSubTab()
 {
 }
 
-BOOL LLPanelGroupActionsSubTab::postBuildSubTab(LLView* root)
+bool LLPanelGroupActionsSubTab::postBuildSubTab(LLView* root)
 {
     LLPanelGroupSubTab::postBuildSubTab(root);
 
@@ -2861,15 +2863,15 @@ BOOL LLPanelGroupActionsSubTab::postBuildSubTab(LLView* root)
     mActionRoles = parent->getChild<LLScrollListCtrl>("action_roles",recurse);
     mActionMembers  = parent->getChild<LLNameListCtrl>("action_members",recurse);
 
-    if (!mActionList || !mActionDescription || !mActionRoles || !mActionMembers) return FALSE;
+    if (!mActionList || !mActionDescription || !mActionRoles || !mActionMembers) return false;
 
-    mActionList->setCommitOnSelectionChange(TRUE);
+    mActionList->setCommitOnSelectionChange(true);
     mActionList->setCommitCallback(boost::bind(&LLPanelGroupActionsSubTab::handleActionSelect, this));
     mActionList->setContextMenu(LLScrollListCtrl::MENU_AVATAR);
 
     update(GC_ALL);
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelGroupActionsSubTab::activate()
@@ -2884,9 +2886,9 @@ void LLPanelGroupActionsSubTab::activate()
                      GP_ALL_POWERS,
                      GP_ALL_POWERS,
                      NULL,
-                     FALSE,
-                     TRUE,
-                     FALSE);
+                     false,
+                     true,
+                     false);
 }
 
 void LLPanelGroupActionsSubTab::deactivate()
@@ -2937,9 +2939,9 @@ void LLPanelGroupActionsSubTab::onFilterChanged()
         GP_ALL_POWERS,
         GP_ALL_POWERS,
         NULL,
-        FALSE,
-        TRUE,
-        FALSE);
+        false,
+        true,
+        false);
 }
 
 void LLPanelGroupActionsSubTab::handleActionSelect()
@@ -3050,7 +3052,7 @@ LLPanelGroupBanListSubTab::LLPanelGroupBanListSubTab()
       mDeleteBanButton(NULL)
 {}
 
-BOOL LLPanelGroupBanListSubTab::postBuildSubTab(LLView* root)
+bool LLPanelGroupBanListSubTab::postBuildSubTab(LLView* root)
 {
     LLPanelGroupSubTab::postBuildSubTab(root);
 
@@ -3071,19 +3073,19 @@ BOOL LLPanelGroupBanListSubTab::postBuildSubTab(LLView* root)
     mBanCountText           = parent->getChild<LLTextBase>("ban_count", recurse);
 
     if(!mBanList || !mCreateBanButton || !mDeleteBanButton || !mRefreshBanListButton || !mBanCountText)
-        return FALSE;
+        return false;
 
-    mBanList->setCommitOnSelectionChange(TRUE);
+    mBanList->setCommitOnSelectionChange(true);
     mBanList->setCommitCallback(onBanEntrySelect, this);
 
     mCreateBanButton->setClickedCallback(onCreateBanEntry, this);
-    mCreateBanButton->setEnabled(FALSE);
+    mCreateBanButton->setEnabled(false);
 
     mDeleteBanButton->setClickedCallback(onDeleteBanEntry, this);
-    mDeleteBanButton->setEnabled(FALSE);
+    mDeleteBanButton->setEnabled(false);
 
     mRefreshBanListButton->setClickedCallback(onRefreshBanList, this);
-    mRefreshBanListButton->setEnabled(FALSE);
+    mRefreshBanListButton->setEnabled(false);
 
     setBanCount(0);
 
@@ -3091,8 +3093,8 @@ BOOL LLPanelGroupBanListSubTab::postBuildSubTab(LLView* root)
 
     populateBanList();
 
-    setFooterEnabled(FALSE);
-    return TRUE;
+    setFooterEnabled(false);
+    return true;
 }
 
 void LLPanelGroupBanListSubTab::activate()
@@ -3100,18 +3102,18 @@ void LLPanelGroupBanListSubTab::activate()
     LLPanelGroupSubTab::activate();
 
     mBanList->deselectAllItems();
-    mDeleteBanButton->setEnabled(FALSE);
+    mDeleteBanButton->setEnabled(false);
 
     LLGroupMgrGroupData * group_datap = LLGroupMgr::getInstance()->getGroupData(mGroupID);
     if (group_datap)
     {
         mCreateBanButton->setEnabled(gAgent.hasPowerInGroup(mGroupID, GP_GROUP_BAN_ACCESS) &&
                                      group_datap->mBanList.size() < GB_MAX_BANNED_AGENTS);
-        setBanCount(group_datap->mBanList.size());
+        setBanCount(static_cast<U32>(group_datap->mBanList.size()));
     }
     else
     {
-        mCreateBanButton->setEnabled(FALSE);
+        mCreateBanButton->setEnabled(false);
         setBanCount(0);
     }
 
@@ -3122,7 +3124,7 @@ void LLPanelGroupBanListSubTab::activate()
     //
     LLGroupMgr::getInstance()->sendGroupBanRequest(LLGroupMgr::REQUEST_GET, mGroupID);
 
-    setFooterEnabled(FALSE);
+    setFooterEnabled(false);
     update(GC_ALL);
 }
 
@@ -3153,7 +3155,7 @@ void LLPanelGroupBanListSubTab::handleBanEntrySelect()
 {
     if (gAgent.hasPowerInGroup(mGroupID, GP_GROUP_BAN_ACCESS))
     {
-        mDeleteBanButton->setEnabled(TRUE);
+        mDeleteBanButton->setEnabled(true);
     }
 }
 
@@ -3229,12 +3231,12 @@ void LLPanelGroupBanListSubTab::handleDeleteBanEntry()
 
         // Removing an item removes the selection, we shouldn't be able to click
         // the button anymore until we reselect another entry.
-        mDeleteBanButton->setEnabled(FALSE);
+        mDeleteBanButton->setEnabled(false);
     }
 
     // update ban-count related elements
-    mCreateBanButton->setEnabled(TRUE);
-    setBanCount(gdatap->mBanList.size());
+    mCreateBanButton->setEnabled(true);
+    setBanCount(static_cast<U32>(gdatap->mBanList.size()));
 
     LLGroupMgr::getInstance()->sendGroupBanRequest(LLGroupMgr::REQUEST_POST, mGroupID, LLGroupMgr::BAN_DELETE, ban_ids);
 }
@@ -3250,7 +3252,7 @@ void LLPanelGroupBanListSubTab::onRefreshBanList(void* user_data)
 
 void LLPanelGroupBanListSubTab::handleRefreshBanList()
 {
-    mRefreshBanListButton->setEnabled(FALSE);
+    mRefreshBanListButton->setEnabled(false);
     LLGroupMgr::getInstance()->sendGroupBanRequest(LLGroupMgr::REQUEST_GET, mGroupID);
 }
 
@@ -3258,7 +3260,7 @@ void LLPanelGroupBanListSubTab::onBanListCompleted(bool isComplete)
 {
     if(isComplete)
     {
-        mRefreshBanListButton->setEnabled(TRUE);
+        mRefreshBanListButton->setEnabled(true);
         populateBanList();
     }
 }
@@ -3309,10 +3311,10 @@ void LLPanelGroupBanListSubTab::populateBanList()
         mBanList->addNameItemRow(ban_entry);
     }
 
-    mRefreshBanListButton->setEnabled(TRUE);
+    mRefreshBanListButton->setEnabled(true);
     mCreateBanButton->setEnabled(gAgent.hasPowerInGroup(mGroupID, GP_GROUP_BAN_ACCESS) &&
                                  gdatap->mBanList.size() < GB_MAX_BANNED_AGENTS);
-    setBanCount(gdatap->mBanList.size());
+    setBanCount(static_cast<U32>(gdatap->mBanList.size()));
 }
 
 void LLPanelGroupBanListSubTab::setGroupID(const LLUUID& id)
@@ -3320,6 +3322,6 @@ void LLPanelGroupBanListSubTab::setGroupID(const LLUUID& id)
     if(mBanList)
         mBanList->deleteAllItems();
 
-    setFooterEnabled(FALSE);
+    setFooterEnabled(false);
     LLPanelGroupSubTab::setGroupID(id);
 }
diff --git a/indra/newview/llpanelgrouproles.h b/indra/newview/llpanelgrouproles.h
index da384032cf..e320efa1c7 100644
--- a/indra/newview/llpanelgrouproles.h
+++ b/indra/newview/llpanelgrouproles.h
@@ -53,14 +53,14 @@ public:
     friend class LLPanelGroupRolesSubTab;
     friend class LLPanelGroupActionsSubTab;
 
-    virtual BOOL postBuild();
-    virtual BOOL isVisibleByAgent(LLAgent* agentp);
+    virtual bool postBuild();
+    virtual bool isVisibleByAgent(LLAgent* agentp);
 
 
     bool handleSubTabSwitch(const LLSD& data);
 
     // Checks if the current tab needs to be applied, and tries to switch to the requested tab.
-    BOOL attemptTransition();
+    bool attemptTransition();
 
     // Switches to the requested tab (will close() if requested is NULL)
     void transitionToTab();
@@ -73,7 +73,7 @@ public:
     virtual void activate();
     virtual void deactivate();
     virtual bool needsApply(std::string& mesg);
-    virtual BOOL hasModal();
+    virtual bool hasModal();
     virtual bool apply(std::string& mesg);
     virtual void cancel();
     virtual void update(LLGroupChange gc);
@@ -84,7 +84,7 @@ protected:
     LLPanelGroupTab*        mCurrentTab;
     LLPanelGroupTab*        mRequestedTab;
     LLTabContainer* mSubTabContainer;
-    BOOL                    mFirstUse;
+    bool                    mFirstUse;
 
     std::string             mDefaultNeedsApplyMesg;
     std::string             mWantApplyMesg;
@@ -97,10 +97,10 @@ public:
     LLPanelGroupSubTab();
     virtual ~LLPanelGroupSubTab();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     // This allows sub-tabs to collect child widgets from a higher level in the view hierarchy.
-    virtual BOOL postBuildSubTab(LLView* root);
+    virtual bool postBuildSubTab(LLView* root);
 
     virtual void setSearchFilter( const std::string& filter );
 
@@ -111,7 +111,7 @@ public:
     bool matchesActionSearchFilter(std::string action);
 
 
-    void setFooterEnabled(BOOL enable);
+    void setFooterEnabled(bool enable);
 
     virtual void setGroupID(const LLUUID& id);
 protected:
@@ -119,23 +119,24 @@ protected:
                                  U64 allowed_by_some,
                                  U64 allowed_by_all,
                                  LLUICtrl::commit_callback_t commit_callback,
-                                 BOOL show_all,
-                                 BOOL filter,
-                                 BOOL is_owner_role);
+                                 bool show_all,
+                                 bool filter,
+                                 bool is_owner_role);
     void buildActionCategory(LLScrollListCtrl* ctrl,
                                     U64 allowed_by_some,
                                     U64 allowed_by_all,
                                     LLRoleActionSet* action_set,
                                     LLUICtrl::commit_callback_t commit_callback,
-                                    BOOL show_all,
-                                    BOOL filter,
-                                    BOOL is_owner_role);
+                                    bool show_all,
+                                    bool filter,
+                                    bool is_owner_role);
 
 protected:
     LLPanel* mHeader; // Might not be present in xui of derived class (NULL)
     LLPanel* mFooter;
 
     LLFilterEditor* mSearchEditor;
+    boost::signals2::connection mSearchCommitConnection;
 
     std::string mSearchFilter;
 
@@ -146,7 +147,7 @@ protected:
     bool mHasGroupBanPower; // Used to communicate between action sets due to the dependency between
                             // GP_GROUP_BAN_ACCESS and GP_EJECT_MEMBER and GP_ROLE_REMOVE_MEMBER
 
-    void setOthersVisible(BOOL b);
+    void setOthersVisible(bool b);
 };
 
 
@@ -156,7 +157,7 @@ public:
     LLPanelGroupMembersSubTab();
     virtual ~LLPanelGroupMembersSubTab();
 
-    virtual BOOL postBuildSubTab(LLView* root);
+    virtual bool postBuildSubTab(LLView* root);
 
     static void onMemberSelect(LLUICtrl*, void*);
     void handleMemberSelect();
@@ -219,9 +220,9 @@ protected:
     LLButton*           mEjectBtn;
     LLButton*           mBanBtn;
 
-    BOOL mChanged;
-    BOOL mPendingMemberUpdate;
-    BOOL mHasMatch;
+    bool mChanged;
+    bool mPendingMemberUpdate;
+    bool mHasMatch;
 
     LLTextEditor*   mActionDescription;
 
@@ -240,7 +241,7 @@ public:
     LLPanelGroupRolesSubTab();
     virtual ~LLPanelGroupRolesSubTab();
 
-    virtual BOOL postBuildSubTab(LLView* root);
+    virtual bool postBuildSubTab(LLView* root);
 
     virtual void activate();
     virtual void deactivate();
@@ -281,7 +282,7 @@ public:
 
     virtual void setGroupID(const LLUUID& id);
 
-    BOOL    mFirstOpen;
+    bool    mFirstOpen;
 
 protected:
     void handleActionCheck(LLUICtrl* ctrl, bool force);
@@ -302,7 +303,7 @@ protected:
     LLButton*       mCopyRoleButton;
 
     LLUUID  mSelectedRole;
-    BOOL    mHasRoleChange;
+    bool    mHasRoleChange;
     std::string mRemoveEveryoneTxt;
 };
 
@@ -313,7 +314,7 @@ public:
     LLPanelGroupActionsSubTab();
     virtual ~LLPanelGroupActionsSubTab();
 
-    virtual BOOL postBuildSubTab(LLView* root);
+    virtual bool postBuildSubTab(LLView* root);
 
 
     virtual void activate();
@@ -341,7 +342,7 @@ public:
     LLPanelGroupBanListSubTab();
     virtual ~LLPanelGroupBanListSubTab() {}
 
-    virtual BOOL postBuildSubTab(LLView* root);
+    virtual bool postBuildSubTab(LLView* root);
 
     virtual void activate();
     virtual void update(LLGroupChange gc);
diff --git a/indra/newview/llpanelhome.cpp b/indra/newview/llpanelhome.cpp
index bce7ea2c00..a17d101539 100644
--- a/indra/newview/llpanelhome.cpp
+++ b/indra/newview/llpanelhome.cpp
@@ -52,7 +52,7 @@ void LLPanelHome::onOpen(const LLSD& key)
     mFirstView = false;
 }
 
-BOOL LLPanelHome::postBuild()
+bool LLPanelHome::postBuild()
 {
     mBrowser = getChild<LLMediaCtrl>("browser");
     if (mBrowser)
@@ -64,7 +64,7 @@ BOOL LLPanelHome::postBuild()
         mBrowser->setHomePageUrl(url);
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelHome::handleMediaEvent(LLPluginClassMedia *self, EMediaEvent event)
diff --git a/indra/newview/llpanelhome.h b/indra/newview/llpanelhome.h
index bdb65eb17b..e4687d1765 100644
--- a/indra/newview/llpanelhome.h
+++ b/indra/newview/llpanelhome.h
@@ -44,7 +44,7 @@ class LLPanelHome :
 public:
     LLPanelHome();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
 private:
diff --git a/indra/newview/llpanelland.cpp b/indra/newview/llpanelland.cpp
index ea0114afe7..3e22374294 100644
--- a/indra/newview/llpanelland.cpp
+++ b/indra/newview/llpanelland.cpp
@@ -56,7 +56,7 @@ public:
 };
 
 
-BOOL    LLPanelLandInfo::postBuild()
+bool    LLPanelLandInfo::postBuild()
 {
     childSetAction("button buy land",boost::bind(onClickClaim));
     childSetAction("button abandon land", boost::bind(onClickRelease));
@@ -67,7 +67,7 @@ BOOL    LLPanelLandInfo::postBuild()
     mCheckShowOwners = getChild<LLCheckBoxCtrl>("checkbox show owners");
     getChild<LLUICtrl>("checkbox show owners")->setValue(gSavedSettings.getBOOL("ShowParcelOwners"));
 
-    return TRUE;
+    return true;
 }
 //
 // Methods
@@ -125,11 +125,11 @@ void LLPanelLandInfo::refresh()
         //mTextPrice->setText(LLStringUtil::null);
         getChild<LLUICtrl>("textbox price")->setValue(LLStringUtil::null);
 
-        getChildView("button buy land")->setEnabled(FALSE);
-        getChildView("button abandon land")->setEnabled(FALSE);
-        getChildView("button subdivide land")->setEnabled(FALSE);
-        getChildView("button join land")->setEnabled(FALSE);
-        getChildView("button about land")->setEnabled(FALSE);
+        getChildView("button buy land")->setEnabled(false);
+        getChildView("button abandon land")->setEnabled(false);
+        getChildView("button subdivide land")->setEnabled(false);
+        getChildView("button join land")->setEnabled(false);
+        getChildView("button about land")->setEnabled(false);
     }
     else
     {
@@ -137,30 +137,30 @@ void LLPanelLandInfo::refresh()
         const LLUUID& owner_id = parcel->getOwnerID();
         const LLUUID& auth_buyer_id = parcel->getAuthorizedBuyerID();
 
-        BOOL is_public = parcel->isPublic();
-        BOOL is_for_sale = parcel->getForSale()
+        bool is_public = parcel->isPublic();
+        bool is_for_sale = parcel->getForSale()
             && ((parcel->getSalePrice() > 0) || (auth_buyer_id.notNull()));
-        BOOL can_buy = (is_for_sale
+        bool can_buy = (is_for_sale
                         && (owner_id != gAgent.getID())
                         && ((gAgent.getID() == auth_buyer_id)
                             || (auth_buyer_id.isNull())));
 
         if (is_public && !LLViewerParcelMgr::getInstance()->getParcelSelection()->getMultipleOwners())
         {
-            getChildView("button buy land")->setEnabled(TRUE);
+            getChildView("button buy land")->setEnabled(true);
         }
         else
         {
             getChildView("button buy land")->setEnabled(can_buy);
         }
 
-        BOOL owner_release = LLViewerParcelMgr::isParcelOwnedByAgent(parcel, GP_LAND_RELEASE);
-        BOOL owner_divide =  LLViewerParcelMgr::isParcelOwnedByAgent(parcel, GP_LAND_DIVIDE_JOIN);
+        bool owner_release = LLViewerParcelMgr::isParcelOwnedByAgent(parcel, GP_LAND_RELEASE);
+        bool owner_divide =  LLViewerParcelMgr::isParcelOwnedByAgent(parcel, GP_LAND_DIVIDE_JOIN);
 
-        BOOL manager_releaseable = ( gAgent.canManageEstate()
+        bool manager_releaseable = ( gAgent.canManageEstate()
                                   && (parcel->getOwnerID() == regionp->getOwner()) );
 
-        BOOL manager_divideable = ( gAgent.canManageEstate()
+        bool manager_divideable = ( gAgent.canManageEstate()
                                 && ((parcel->getOwnerID() == regionp->getOwner()) || owner_divide) );
 
         getChildView("button abandon land")->setEnabled(owner_release || manager_releaseable || gAgent.isGodlike());
@@ -183,21 +183,21 @@ void LLPanelLandInfo::refresh()
             //&& LLViewerParcelMgr::getInstance()->getSelfCount() > 1
             && !LLViewerParcelMgr::getInstance()->getParcelSelection()->getWholeParcelSelected())
         {
-            getChildView("button join land")->setEnabled(TRUE);
+            getChildView("button join land")->setEnabled(true);
         }
         else
         {
             LL_DEBUGS() << "Invalid selection for joining land" << LL_ENDL;
-            getChildView("button join land")->setEnabled(FALSE);
+            getChildView("button join land")->setEnabled(false);
         }
 
-        getChildView("button about land")->setEnabled(TRUE);
+        getChildView("button about land")->setEnabled(true);
 
         // show pricing information
         S32 area;
         S32 claim_price;
         S32 rent_price;
-        BOOL for_sale;
+        bool for_sale;
         F32 dwell;
         LLViewerParcelMgr::getInstance()->getDisplayInfo(&area,
                                    &claim_price,
diff --git a/indra/newview/llpanelland.h b/indra/newview/llpanelland.h
index 0beb579cd6..7d0c6936bd 100644
--- a/indra/newview/llpanelland.h
+++ b/indra/newview/llpanelland.h
@@ -43,7 +43,7 @@ public:
     LLPanelLandInfo();
     virtual ~LLPanelLandInfo();
 
-    void refresh();
+    void refresh() override;
     static void refreshAll();
 
     LLCheckBoxCtrl  *mCheckShowOwners;
@@ -56,7 +56,7 @@ protected:
     static void onClickAbout();
 
 protected:
-    virtual BOOL    postBuild();
+    bool postBuild() override;
 
     static LLPanelLandSelectObserver* sObserver;
     static LLPanelLandInfo* sInstance;
diff --git a/indra/newview/llpanellandaudio.cpp b/indra/newview/llpanellandaudio.cpp
index bad9c651a2..143fa5602a 100644
--- a/indra/newview/llpanellandaudio.cpp
+++ b/indra/newview/llpanellandaudio.cpp
@@ -74,7 +74,7 @@ LLPanelLandAudio::~LLPanelLandAudio()
 }
 
 
-BOOL LLPanelLandAudio::postBuild()
+bool LLPanelLandAudio::postBuild()
 {
     mCheckSoundLocal = getChild<LLCheckBoxCtrl>("check sound local");
     childSetCommitCallback("check sound local", onCommitAny, this);
@@ -100,7 +100,7 @@ BOOL LLPanelLandAudio::postBuild()
     mCheckObscureMOAP = getChild<LLCheckBoxCtrl>("obscure_moap");
     childSetCommitCallback("obscure_moap", onCommitAny, this);
 
-    return TRUE;
+    return true;
 }
 
 
@@ -118,7 +118,7 @@ void LLPanelLandAudio::refresh()
         // something selected, hooray!
 
         // Display options
-        BOOL can_change_media = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_CHANGE_MEDIA);
+        bool can_change_media = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_CHANGE_MEDIA);
 
         mCheckSoundLocal->set( parcel->getSoundLocal() );
         mCheckSoundLocal->setEnabled( can_change_media );
@@ -154,7 +154,7 @@ void LLPanelLandAudio::refresh()
         mMusicURLEdit->setText(parcel->getMusicURL());
         mMusicURLEdit->setEnabled( can_change_media );
 
-        BOOL can_change_av_sounds = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_OPTIONS) && parcel->getHaveNewParcelLimitData();
+        bool can_change_av_sounds = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_OPTIONS) && parcel->getHaveNewParcelLimitData();
         mCheckAVSoundAny->set(parcel->getAllowAnyAVSounds());
         mCheckAVSoundAny->setEnabled(can_change_av_sounds);
 
@@ -177,14 +177,14 @@ void LLPanelLandAudio::onCommitAny(LLUICtrl*, void *userdata)
     }
 
     // Extract data from UI
-    BOOL sound_local        = self->mCheckSoundLocal->get();
+    bool sound_local        = self->mCheckSoundLocal->get();
     std::string music_url   = self->mMusicURLEdit->getText();
 
-    BOOL voice_enabled = self->mCheckParcelEnableVoice->get();
-    BOOL voice_estate_chan = !self->mCheckParcelVoiceLocal->get();
+    bool voice_enabled = self->mCheckParcelEnableVoice->get();
+    bool voice_estate_chan = !self->mCheckParcelVoiceLocal->get();
 
-    BOOL any_av_sound       = self->mCheckAVSoundAny->get();
-    BOOL group_av_sound     = TRUE;     // If set to "Everyone" then group is checked as well
+    bool any_av_sound       = self->mCheckAVSoundAny->get();
+    bool group_av_sound     = true;     // If set to "Everyone" then group is checked as well
     if (!any_av_sound)
     {   // If "Everyone" is off, use the value from the checkbox
         group_av_sound = self->mCheckAVSoundGroup->get();
diff --git a/indra/newview/llpanellandaudio.h b/indra/newview/llpanellandaudio.h
index 6a2f6c19fe..9fdcea0f59 100644
--- a/indra/newview/llpanellandaudio.h
+++ b/indra/newview/llpanellandaudio.h
@@ -39,7 +39,7 @@ class LLPanelLandAudio
 public:
     LLPanelLandAudio(LLSafeHandle<LLParcelSelection>& parcelp);
     /*virtual*/ ~LLPanelLandAudio();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     void refresh();
 
 private:
diff --git a/indra/newview/llpanellandmarkinfo.cpp b/indra/newview/llpanellandmarkinfo.cpp
index f30be3faf3..41373cd7f5 100644
--- a/indra/newview/llpanellandmarkinfo.cpp
+++ b/indra/newview/llpanellandmarkinfo.cpp
@@ -69,7 +69,7 @@ LLPanelLandmarkInfo::~LLPanelLandmarkInfo()
 {}
 
 // virtual
-BOOL LLPanelLandmarkInfo::postBuild()
+bool LLPanelLandmarkInfo::postBuild()
 {
     LLPanelPlaceInfo::postBuild();
 
@@ -86,7 +86,7 @@ BOOL LLPanelLandmarkInfo::postBuild()
     icon_m = getString("icon_M");
     icon_r = getString("icon_R");
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -134,9 +134,9 @@ void LLPanelLandmarkInfo::setInfoType(EInfoType type, const LLUUID &folder_id)
         {
             mCurrentTitle = getString("title_create_landmark");
 
-            mLandmarkTitle->setVisible(FALSE);
-            mLandmarkTitleEditor->setVisible(TRUE);
-            mNotesEditor->setEnabled(TRUE);
+            mLandmarkTitle->setVisible(false);
+            mLandmarkTitleEditor->setVisible(true);
+            mNotesEditor->setEnabled(true);
 
             LLViewerParcelMgr* parcel_mgr = LLViewerParcelMgr::getInstance();
             LLParcel* parcel = parcel_mgr->getAgentParcel();
@@ -203,16 +203,16 @@ void LLPanelLandmarkInfo::setInfoType(EInfoType type, const LLUUID &folder_id)
         default:
             mCurrentTitle = getString("title_landmark");
 
-            mLandmarkTitle->setVisible(TRUE);
-            mLandmarkTitleEditor->setVisible(FALSE);
-            mNotesEditor->setEnabled(FALSE);
+            mLandmarkTitle->setVisible(true);
+            mLandmarkTitleEditor->setVisible(false);
+            mNotesEditor->setEnabled(false);
         break;
     }
 
     populateFoldersList();
 
     // Prevent the floater from losing focus (if the sidepanel is undocked).
-    setFocus(TRUE);
+    setFocus(true);
 
     LLPanelPlaceInfo::setInfoType(type);
 }
@@ -338,7 +338,7 @@ void LLPanelLandmarkInfo::displayItemInfo(const LLInventoryItem* pItem)
     mNotesEditor->setText(pItem->getDescription());
 }
 
-void LLPanelLandmarkInfo::toggleLandmarkEditMode(BOOL enabled)
+void LLPanelLandmarkInfo::toggleLandmarkEditMode(bool enabled)
 {
     // If switching to edit mode while creating landmark
     // the "Create Landmark" title remains.
@@ -353,7 +353,7 @@ void LLPanelLandmarkInfo::toggleLandmarkEditMode(BOOL enabled)
         mLandmarkTitle->setText(mLandmarkTitleEditor->getText());
     }
 
-    if (mNotesEditor->getReadOnly() ==  (enabled == TRUE))
+    if (mNotesEditor->getReadOnly() == enabled)
     {
         mLandmarkTitle->setVisible(!enabled);
         mLandmarkTitleEditor->setVisible(enabled);
@@ -368,10 +368,10 @@ void LLPanelLandmarkInfo::toggleLandmarkEditMode(BOOL enabled)
     }
 
     // Prevent the floater from losing focus (if the sidepanel is undocked).
-    setFocus(TRUE);
+    setFocus(true);
 }
 
-void LLPanelLandmarkInfo::setCanEdit(BOOL enabled)
+void LLPanelLandmarkInfo::setCanEdit(bool enabled)
 {
     getChild<LLButton>("edit_btn")->setEnabled(enabled);
 }
@@ -391,7 +391,7 @@ const LLUUID LLPanelLandmarkInfo::getLandmarkFolder() const
     return mFolderCombo->getValue().asUUID();
 }
 
-BOOL LLPanelLandmarkInfo::setLandmarkFolder(const LLUUID& id)
+bool LLPanelLandmarkInfo::setLandmarkFolder(const LLUUID& id)
 {
     return mFolderCombo->setCurrentByID(id);
 }
@@ -545,7 +545,7 @@ void LLPanelLandmarkInfo::collectLandmarkFolders(LLInventoryModel::cat_array_t&
     gInventory.accountForUpdate(update);
 
     mItem->setParent(mNewParentId);
-    mItem->updateParentOnServer(FALSE);
+    mItem->updateParentOnServer(false);
 
     gInventory.updateItem(mItem);
     gInventory.notifyObservers();
diff --git a/indra/newview/llpanellandmarkinfo.h b/indra/newview/llpanellandmarkinfo.h
index f849adada3..af47af06ac 100644
--- a/indra/newview/llpanellandmarkinfo.h
+++ b/indra/newview/llpanellandmarkinfo.h
@@ -40,7 +40,7 @@ public:
     LLPanelLandmarkInfo();
     /*virtual*/ ~LLPanelLandmarkInfo();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     /*virtual*/ void resetLocation();
 
@@ -55,15 +55,15 @@ public:
     // Displays landmark owner, creator and creation date info.
     void displayItemInfo(const LLInventoryItem* pItem);
 
-    void toggleLandmarkEditMode(BOOL enabled);
-    void setCanEdit(BOOL enabled);
+    void toggleLandmarkEditMode(bool enabled);
+    void setCanEdit(bool enabled);
 
     const std::string& getLandmarkTitle() const;
     const std::string getLandmarkNotes() const;
     const LLUUID getLandmarkFolder() const;
 
     // Select current landmark folder in combobox.
-    BOOL setLandmarkFolder(const LLUUID& id);
+    bool setLandmarkFolder(const LLUUID& id);
 
     typedef std::vector<LLPointer<LLViewerInventoryCategory> > cat_array_t;
     static std::string getFullFolderName(const LLViewerInventoryCategory* cat);
diff --git a/indra/newview/llpanellandmarks.cpp b/indra/newview/llpanellandmarks.cpp
index 2a726e3092..99133d1fb3 100644
--- a/indra/newview/llpanellandmarks.cpp
+++ b/indra/newview/llpanellandmarks.cpp
@@ -66,7 +66,7 @@ static void collapse_all_folders(LLFolderView* root_folder);
 static void expand_all_folders(LLFolderView* root_folder);
 static bool has_expanded_folders(LLFolderView* root_folder);
 static bool has_collapsed_folders(LLFolderView* root_folder);
-static void toggle_restore_menu(LLMenuGL* menu, BOOL visible, BOOL enabled);
+static void toggle_restore_menu(LLMenuGL* menu, bool visible, bool enabled);
 
 /**
  * Functor counting expanded and collapsed folders in folder view tree to know
@@ -136,7 +136,7 @@ void LLOpenFolderByID::doFolder(LLFolderViewFolder* folder)
     {
         if (!folder->isOpen())
         {
-            folder->setOpen(TRUE);
+            folder->setOpen(true);
             mIsFolderOpen = true;
         }
     }
@@ -175,16 +175,16 @@ LLLandmarksPanel::~LLLandmarksPanel()
 {
 }
 
-BOOL LLLandmarksPanel::postBuild()
+bool LLLandmarksPanel::postBuild()
 {
     if (!gInventory.isInventoryUsable())
-        return FALSE;
+        return false;
 
     // mast be called before any other initXXX methods to init Gear menu
     initListCommandsHandlers();
     initLandmarksInventoryPanel();
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -292,7 +292,7 @@ void LLLandmarksPanel::updateVerbs()
     }
 }
 
-void LLLandmarksPanel::setItemSelected(const LLUUID& obj_id, BOOL take_keyboard_focus)
+void LLLandmarksPanel::setItemSelected(const LLUUID& obj_id, bool take_keyboard_focus)
 {
     if (!mCurrentSelectedList)
         return;
@@ -301,7 +301,7 @@ void LLLandmarksPanel::setItemSelected(const LLUUID& obj_id, BOOL take_keyboard_
     LLFolderViewItem* item = mCurrentSelectedList->getItemByID(obj_id);
     if (!item)
         return;
-    root->setSelection(item, FALSE, take_keyboard_focus);
+    root->setSelection(item, false, take_keyboard_focus);
     root->scrollToShowSelection();
 }
 
@@ -473,18 +473,18 @@ void LLLandmarksPanel::initListCommandsHandlers()
     {
         mGearLandmarkMenu->setVisibilityChangeCallback(boost::bind(&LLLandmarksPanel::onMenuVisibilityChange, this, _1, _2));
         // show menus even if all items are disabled
-        mGearLandmarkMenu->setAlwaysShowMenu(TRUE);
+        mGearLandmarkMenu->setAlwaysShowMenu(true);
     } // Else corrupted files?
 
     if (mGearFolderMenu)
     {
         mGearFolderMenu->setVisibilityChangeCallback(boost::bind(&LLLandmarksPanel::onMenuVisibilityChange, this, _1, _2));
-        mGearFolderMenu->setAlwaysShowMenu(TRUE);
+        mGearFolderMenu->setAlwaysShowMenu(true);
     }
 
     if (mAddMenu)
     {
-        mAddMenu->setAlwaysShowMenu(TRUE);
+        mAddMenu->setAlwaysShowMenu(true);
     }
 }
 
@@ -887,8 +887,8 @@ void LLLandmarksPanel::onMenuVisibilityChange(LLUICtrl* ctrl, const LLSD& param)
     // We don't have to update items visibility if the menu is hiding.
     if (!new_visibility) return;
 
-    BOOL are_any_items_in_trash = FALSE;
-    BOOL are_all_items_in_trash = TRUE;
+    bool are_any_items_in_trash = false;
+    bool are_all_items_in_trash = true;
 
     LLFolderView* root_folder_view = mCurrentSelectedList ? mCurrentSelectedList->getRootFolder() : NULL;
     if(root_folder_view)
@@ -1004,7 +1004,7 @@ bool LLLandmarksPanel::canItemBeModified(const std::string& command_name, LLFold
     return can_be_modified;
 }
 
-bool LLLandmarksPanel::handleDragAndDropToTrash(BOOL drop, EDragAndDropType cargo_type, void* cargo_data , EAcceptance* accept)
+bool LLLandmarksPanel::handleDragAndDropToTrash(bool drop, EDragAndDropType cargo_type, void* cargo_data , EAcceptance* accept)
 {
     *accept = ACCEPT_NO;
 
@@ -1062,7 +1062,7 @@ void LLLandmarksPanel::doShowOnMap(LLLandmark* landmark)
 
     if (mGearLandmarkMenu)
     {
-        mGearLandmarkMenu->setItemEnabled("show_on_map", TRUE);
+        mGearLandmarkMenu->setItemEnabled("show_on_map", true);
     }
 }
 
@@ -1151,7 +1151,7 @@ static void collapse_all_folders(LLFolderView* root_folder)
     if (!root_folder)
         return;
 
-    root_folder->setOpenArrangeRecursively(FALSE, LLFolderViewFolder::RECURSE_DOWN);
+    root_folder->setOpenArrangeRecursively(false, LLFolderViewFolder::RECURSE_DOWN);
     root_folder->arrangeAll();
 }
 
@@ -1160,7 +1160,7 @@ static void expand_all_folders(LLFolderView* root_folder)
     if (!root_folder)
         return;
 
-    root_folder->setOpenArrangeRecursively(TRUE, LLFolderViewFolder::RECURSE_DOWN);
+    root_folder->setOpenArrangeRecursively(true, LLFolderViewFolder::RECURSE_DOWN);
     root_folder->arrangeAll();
 }
 
@@ -1195,7 +1195,7 @@ static bool has_collapsed_folders(LLFolderView* root_folder)
 // Displays "Restore Item" context menu entry while hiding
 // all other entries or vice versa.
 // Sets "Restore Item" enabled state.
-void toggle_restore_menu(LLMenuGL *menu, BOOL visible, BOOL enabled)
+void toggle_restore_menu(LLMenuGL *menu, bool visible, bool enabled)
 {
     if (!menu) return;
 
@@ -1225,17 +1225,17 @@ LLFavoritesPanel::LLFavoritesPanel()
     buildFromFile("panel_favorites.xml");
 }
 
-BOOL LLFavoritesPanel::postBuild()
+bool LLFavoritesPanel::postBuild()
 {
     if (!gInventory.isInventoryUsable())
-        return FALSE;
+        return false;
 
     // mast be called before any other initXXX methods to init Gear menu
     LLLandmarksPanel::initListCommandsHandlers();
 
     initFavoritesInventoryPanel();
 
-    return TRUE;
+    return true;
 }
 
 void LLFavoritesPanel::initFavoritesInventoryPanel()
diff --git a/indra/newview/llpanellandmarks.h b/indra/newview/llpanellandmarks.h
index 227451607e..30e9188044 100644
--- a/indra/newview/llpanellandmarks.h
+++ b/indra/newview/llpanellandmarks.h
@@ -52,7 +52,7 @@ public:
     LLLandmarksPanel(bool is_landmark_panel);
     virtual ~LLLandmarksPanel();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
     void onSearchEdit(const std::string& string) override;
     void onShowOnMap() override;
     void onShowProfile() override;
@@ -68,7 +68,7 @@ public:
     /**
      * Processes drag-n-drop of the Landmarks and folders into trash button.
      */
-    bool handleDragAndDropToTrash(BOOL drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept) override;
+    bool handleDragAndDropToTrash(bool drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept) override;
 
     void setCurrentSelectedList(LLPlacesInventoryPanel* inventory_list)
     {
@@ -78,7 +78,7 @@ public:
     /**
      * Selects item with "obj_id" in one of accordion tabs.
      */
-    void setItemSelected(const LLUUID& obj_id, BOOL take_keyboard_focus);
+    void setItemSelected(const LLUUID& obj_id, bool take_keyboard_focus);
 
     void updateMenuVisibility(LLUICtrl* menu);
 
@@ -162,7 +162,7 @@ class LLFavoritesPanel : public LLLandmarksPanel
 public:
     LLFavoritesPanel();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
     void initFavoritesInventoryPanel();
 };
 
diff --git a/indra/newview/llpanellandmedia.cpp b/indra/newview/llpanellandmedia.cpp
index 9aff1661ff..294bd4021d 100644
--- a/indra/newview/llpanellandmedia.cpp
+++ b/indra/newview/llpanellandmedia.cpp
@@ -78,12 +78,12 @@ LLPanelLandMedia::~LLPanelLandMedia()
 {
 }
 
-BOOL LLPanelLandMedia::postBuild()
+bool LLPanelLandMedia::postBuild()
 {
 
     mMediaTextureCtrl = getChild<LLTextureCtrl>("media texture");
     mMediaTextureCtrl->setCommitCallback( onCommitAny, this );
-    mMediaTextureCtrl->setAllowNoTexture ( TRUE );
+    mMediaTextureCtrl->setAllowNoTexture ( true );
     mMediaTextureCtrl->setImmediateFilterPermMask(PERM_COPY | PERM_TRANSFER);
     mMediaTextureCtrl->setDnDFilterPermMask(PERM_COPY | PERM_TRANSFER);
 
@@ -112,7 +112,7 @@ BOOL LLPanelLandMedia::postBuild()
     mSetURLButton = getChild<LLButton>("set_media_url");
     childSetAction("set_media_url", onSetBtn, this);
 
-    return TRUE;
+    return true;
 }
 
 
@@ -130,10 +130,10 @@ void LLPanelLandMedia::refresh()
         // something selected, hooray!
 
         // Display options
-        BOOL can_change_media = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_CHANGE_MEDIA);
+        bool can_change_media = LLViewerParcelMgr::isParcelModifiableByAgent(parcel, GP_LAND_CHANGE_MEDIA);
 
         mMediaURLEdit->setText(parcel->getMediaURL());
-        mMediaURLEdit->setEnabled( FALSE );
+        mMediaURLEdit->setEnabled( false );
 
         getChild<LLUICtrl>("current_url")->setValue(parcel->getMediaCurrentURL());
 
@@ -149,14 +149,14 @@ void LLPanelLandMedia::refresh()
         mMediaTypeCombo->setEnabled( can_change_media );
         getChild<LLUICtrl>("mime_type")->setValue(mime_type);
 
-        mMediaAutoScaleCheck->set( parcel->getMediaAutoScale () );
+        mMediaAutoScaleCheck->set( static_cast<bool>(parcel->getMediaAutoScale()) );
         mMediaAutoScaleCheck->setEnabled ( can_change_media );
 
         // Special code to disable looping checkbox for HTML MIME type
         // (DEV-10042 -- Parcel Media: "Loop Media" should be disabled for static media types)
         bool allow_looping = LLMIMETypes::findAllowLooping( mime_type );
         if ( allow_looping )
-            mMediaLoopCheck->set( parcel->getMediaLoop () );
+            mMediaLoopCheck->set( static_cast<bool>(parcel->getMediaLoop()) );
         else
             mMediaLoopCheck->set( false );
         mMediaLoopCheck->setEnabled ( can_change_media && allow_looping );
@@ -275,8 +275,8 @@ void LLPanelLandMedia::onCommitAny(LLUICtrl*, void *userdata)
     std::string media_url   = self->mMediaURLEdit->getText();
     std::string media_desc  = self->mMediaDescEdit->getText();
     std::string mime_type   = self->getChild<LLUICtrl>("mime_type")->getValue().asString();
-    U8 media_auto_scale     = self->mMediaAutoScaleCheck->get();
-    U8 media_loop           = self->mMediaLoopCheck->get();
+    U8 media_auto_scale     = static_cast<U8>(self->mMediaAutoScaleCheck->get());
+    U8 media_loop           = static_cast<U8>(self->mMediaLoopCheck->get());
     S32 media_width         = (S32)self->mMediaWidthCtrl->get();
     S32 media_height        = (S32)self->mMediaHeightCtrl->get();
     LLUUID media_id         = self->mMediaTextureCtrl->getImageAssetID();
diff --git a/indra/newview/llpanellandmedia.h b/indra/newview/llpanellandmedia.h
index 2bcd1fa14d..161784f047 100644
--- a/indra/newview/llpanellandmedia.h
+++ b/indra/newview/llpanellandmedia.h
@@ -39,7 +39,7 @@ class LLPanelLandMedia
 public:
     LLPanelLandMedia(LLSafeHandle<LLParcelSelection>& parcelp);
     /*virtual*/ ~LLPanelLandMedia();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     void refresh();
     void setMediaType(const std::string& media_type);
     void setMediaURL(const std::string& media_type);
diff --git a/indra/newview/llpanellogin.cpp b/indra/newview/llpanellogin.cpp
index 86f56f0949..ed80c8b732 100644
--- a/indra/newview/llpanellogin.cpp
+++ b/indra/newview/llpanellogin.cpp
@@ -74,8 +74,8 @@
 #include "llsdserialize.h"
 
 LLPanelLogin *LLPanelLogin::sInstance = NULL;
-BOOL LLPanelLogin::sCapslockDidNotification = FALSE;
-BOOL LLPanelLogin::sCredentialSet = FALSE;
+bool LLPanelLogin::sCapslockDidNotification = false;
+bool LLPanelLogin::sCredentialSet = false;
 
 // Helper functions
 
@@ -190,10 +190,10 @@ LLPanelLogin::LLPanelLogin(const LLRect &rect,
     mLocationLength(0),
     mShowFavorites(false)
 {
-    setBackgroundVisible(FALSE);
-    setBackgroundOpaque(TRUE);
+    setBackgroundVisible(false);
+    setBackgroundOpaque(true);
 
-    mPasswordModified = FALSE;
+    mPasswordModified = false;
 
     sInstance = this;
 
@@ -321,7 +321,7 @@ LLPanelLogin::LLPanelLogin(const LLRect &rect,
     // STEAM-14: When user presses Enter with this field in focus, initiate login
     username_combo->setCommitCallback(boost::bind(&LLPanelLogin::onUserListCommit, this));
     username_combo->setReturnCallback(boost::bind(&LLPanelLogin::onClickConnect, this));
-    username_combo->setKeystrokeOnEsc(TRUE);
+    username_combo->setKeystrokeOnEsc(true);
 
 
     LLCheckBoxCtrl* remember_name = getChild<LLCheckBoxCtrl>("remember_name");
@@ -335,7 +335,7 @@ void LLPanelLogin::addFavoritesToStartLocation()
     {
         // first login panel has no favorites, just update name length and buttons
         std::string user_defined_name = getChild<LLComboBox>("username_combo")->getSimple();
-        mUsernameLength = user_defined_name.length();
+        mUsernameLength = static_cast<unsigned int>(user_defined_name.length());
         updateLoginButtons();
         return;
     }
@@ -355,7 +355,7 @@ void LLPanelLogin::addFavoritesToStartLocation()
     LLStringUtil::toLower(user_defined_name);
     std::string filename = gDirUtilp->getExpandedFilename(LL_PATH_USER_SETTINGS, "stored_favorites_" + LLGridManager::getInstance()->getGrid() + ".xml");
     std::string old_filename = gDirUtilp->getExpandedFilename(LL_PATH_USER_SETTINGS, "stored_favorites.xml");
-    mUsernameLength = user_defined_name.length();
+    mUsernameLength = static_cast<unsigned int>(user_defined_name.length());
     updateLoginButtons();
 
     std::string::size_type index = user_defined_name.find_first_of(" ._");
@@ -428,7 +428,7 @@ void LLPanelLogin::addFavoritesToStartLocation()
         }
         if (update_password_setting)
         {
-            gSavedSettings.setBOOL("UpdateRememberPasswordSetting", TRUE);
+            gSavedSettings.setBOOL("UpdateRememberPasswordSetting", true);
         }
         break;
     }
@@ -451,7 +451,7 @@ LLPanelLogin::~LLPanelLogin()
 }
 
 // virtual
-void LLPanelLogin::setFocus(BOOL b)
+void LLPanelLogin::setFocus(bool b)
 {
     if(b != hasFocus())
     {
@@ -475,8 +475,8 @@ void LLPanelLogin::giveFocus()
         std::string username = sInstance->getChild<LLUICtrl>("username_combo")->getValue().asString();
         std::string pass = sInstance->getChild<LLUICtrl>("password_edit")->getValue().asString();
 
-        BOOL have_username = !username.empty();
-        BOOL have_pass = !pass.empty();
+        bool have_username = !username.empty();
+        bool have_pass = !pass.empty();
 
         LLLineEditor* edit = NULL;
         LLComboBox* combo = NULL;
@@ -494,12 +494,12 @@ void LLPanelLogin::giveFocus()
 
         if (edit)
         {
-            edit->setFocus(TRUE);
+            edit->setFocus(true);
             edit->selectAll();
         }
         else if (combo)
         {
-            combo->setFocus(TRUE);
+            combo->setFocus(true);
         }
     }
 }
@@ -517,7 +517,7 @@ void LLPanelLogin::show(const LLRect &rect,
     if( !gFocusMgr.getKeyboardFocus() )
     {
         // Grab focus and move cursor to first enabled control
-        sInstance->setFocus(TRUE);
+        sInstance->setFocus(true);
     }
 
     // Make sure that focus always goes here (and use the latest sInstance that was just created)
@@ -579,7 +579,7 @@ void LLPanelLogin::setFields(LLPointer<LLCredential> credential)
         LL_WARNS() << "Attempted fillFields with no login view shown" << LL_ENDL;
         return;
     }
-    sCredentialSet = TRUE;
+    sCredentialSet = true;
     LL_INFOS("Credentials") << "Setting login fields to " << *credential << LL_ENDL;
 
     LLSD identifier = credential.notNull() ? credential->getIdentifier() : LLSD();
@@ -597,13 +597,13 @@ void LLPanelLogin::setFields(LLPointer<LLCredential> credential)
             login_id += lastname;
         }
         sInstance->getChild<LLComboBox>("username_combo")->setLabel(login_id);
-        sInstance->mUsernameLength = login_id.length();
+        sInstance->mUsernameLength = static_cast<unsigned int>(login_id.length());
     }
     else if(identifier.has("type") && (std::string)identifier["type"] == "account")
     {
         std::string login_id = identifier["account_name"].asString();
         sInstance->getChild<LLComboBox>("username_combo")->setLabel(login_id);
-        sInstance->mUsernameLength = login_id.length();
+        sInstance->mUsernameLength = static_cast<unsigned int>(login_id.length());
     }
     else
     {
@@ -627,7 +627,7 @@ void LLPanelLogin::setFields(LLPointer<LLCredential> credential)
         // nice row of asterisks.
         const std::string filler("123456789!123456");
         sInstance->getChild<LLUICtrl>("password_edit")->setValue(filler);
-        sInstance->mPasswordLength = filler.length();
+        sInstance->mPasswordLength = static_cast<unsigned int>(filler.length());
         sInstance->updateLoginButtons();
     }
     else
@@ -715,7 +715,7 @@ void LLPanelLogin::getFields(LLPointer<LLCredential>& credential,
 
 
 // static
-BOOL LLPanelLogin::areCredentialFieldsDirty()
+bool LLPanelLogin::areCredentialFieldsDirty()
 {
     if (!sInstance)
     {
@@ -743,7 +743,7 @@ void LLPanelLogin::updateLocationSelectorsVisibility()
 {
     if (sInstance)
     {
-        BOOL show_server = gSavedSettings.getBOOL("ForceShowGrid");
+        bool show_server = gSavedSettings.getBOOL("ForceShowGrid");
         LLComboBox* server_combo = sInstance->getChild<LLComboBox>("server_combo");
         if ( server_combo )
         {
@@ -793,7 +793,7 @@ void LLPanelLogin::onUpdateStartSLURL(const LLSLURL& new_start_slurl)
             {
 
                 location_combo->setLabel(new_start_slurl.getLocationString());
-                sInstance->mLocationLength = new_start_slurl.getLocationString().length();
+                sInstance->mLocationLength = static_cast<unsigned int>(new_start_slurl.getLocationString().length());
                 sInstance->updateLoginButtons();
             }
         }
@@ -890,7 +890,7 @@ void LLPanelLogin::loadLoginPage()
     // First Login?
     if (gSavedSettings.getBOOL("FirstLoginThisInstall"))
     {
-        params["firstlogin"] = "TRUE"; // not bool: server expects string TRUE
+        params["firstlogin"] = "true"; // not bool: server expects string true
     }
 
     // Channel and Version
@@ -941,7 +941,7 @@ void LLPanelLogin::onClickConnect(bool commit_fields)
         if (commit_fields)
         {
             // JC - Make sure the fields all get committed.
-            sInstance->setFocus(FALSE);
+            sInstance->setFocus(false);
         }
 
         LLComboBox* combo = sInstance->getChild<LLComboBox>("server_combo");
@@ -977,7 +977,7 @@ void LLPanelLogin::onClickConnect(bool commit_fields)
         }
         else
         {
-            sCredentialSet = FALSE;
+            sCredentialSet = false;
             LLPointer<LLCredential> cred;
             bool remember_1, remember_2;
             getFields(cred, remember_1, remember_2);
@@ -1101,7 +1101,7 @@ void LLPanelLogin::onRememberPasswordCheck(void*)
 {
     if (sInstance)
     {
-        gSavedSettings.setBOOL("UpdateRememberPasswordSetting", TRUE);
+        gSavedSettings.setBOOL("UpdateRememberPasswordSetting", true);
 
         LLPointer<LLCredential> cred;
         bool remember_user, remember_password;
@@ -1116,15 +1116,15 @@ void LLPanelLogin::onRememberPasswordCheck(void*)
 void LLPanelLogin::onPassKey(LLLineEditor* caller, void* user_data)
 {
     LLPanelLogin *self = (LLPanelLogin *)user_data;
-    self->mPasswordModified = TRUE;
-    if (gKeyboard->getKeyDown(KEY_CAPSLOCK) && sCapslockDidNotification == FALSE)
+    self->mPasswordModified = true;
+    if (gKeyboard->getKeyDown(KEY_CAPSLOCK) && !sCapslockDidNotification)
     {
         // *TODO: use another way to notify user about enabled caps lock, see EXT-6858
-        sCapslockDidNotification = TRUE;
+        sCapslockDidNotification = true;
     }
 
     LLLineEditor* password_edit(self->getChild<LLLineEditor>("password_edit"));
-    self->mPasswordLength = password_edit->getText().length();
+    self->mPasswordLength = static_cast<unsigned int>(password_edit->getText().length());
     self->updateLoginButtons();
 }
 
@@ -1158,8 +1158,8 @@ void LLPanelLogin::updateServer()
                 // restore creds
                 user_combo->setTextEntry(username);
                 pswd_edit->setValue(password);
-                sInstance->mUsernameLength = username.length();
-                sInstance->mPasswordLength = password.length();
+                sInstance->mUsernameLength = static_cast<unsigned int>(username.length());
+                sInstance->mPasswordLength = static_cast<unsigned int>(password.length());
             }
             else
             {
@@ -1205,7 +1205,7 @@ void LLPanelLogin::updateLoginButtons()
         {
             remember_name->setValue(true);
             LLCheckBoxCtrl* remember_pass = getChild<LLCheckBoxCtrl>("remember_password");
-            remember_pass->setEnabled(TRUE);
+            remember_pass->setEnabled(true);
         } // Note: might be good idea to do "else remember_name->setValue(mRememberedState)" but it might behave 'weird' to user
     }
 }
@@ -1232,7 +1232,7 @@ void LLPanelLogin::populateUserList(LLPointer<LLCredential> credential)
             if (cr_iter->second.notNull()) // basic safety in case of future changes
             {
                 // cr_iter->first == user_id , to be able to be find it in case we select it
-                user_combo->add(LLPanelLogin::getUserName(cr_iter->second), cr_iter->first, ADD_BOTTOM, TRUE);
+                user_combo->add(LLPanelLogin::getUserName(cr_iter->second), cr_iter->first, ADD_BOTTOM, true);
             }
             cr_iter++;
         }
diff --git a/indra/newview/llpanellogin.h b/indra/newview/llpanellogin.h
index 7f4c2487bf..00fd17badf 100644
--- a/indra/newview/llpanellogin.h
+++ b/indra/newview/llpanellogin.h
@@ -49,7 +49,7 @@ public:
                 void *callback_data);
     ~LLPanelLogin();
 
-    virtual void setFocus( BOOL b );
+    virtual void setFocus( bool b );
 
     static void show(const LLRect &rect,
         void (*callback)(S32 option, void* user_data),
@@ -60,9 +60,9 @@ public:
     static void resetFields();
     static void getFields(LLPointer<LLCredential>& credential, bool& remember_user, bool& remember_psswrd);
 
-    static BOOL isCredentialSet() { return sCredentialSet; }
+    static bool isCredentialSet() { return sCredentialSet; }
 
-    static BOOL areCredentialFieldsDirty();
+    static bool areCredentialFieldsDirty();
     static void setLocation(const LLSLURL& slurl);
     static void autologinToLocation(const LLSLURL& slurl);
 
@@ -71,8 +71,6 @@ public:
 
     static void closePanel();
 
-    void setSiteIsAlive( bool alive );
-
     static void loadLoginPage();
     static void giveFocus();
     static void setAlwaysRefresh(bool refresh);
@@ -93,14 +91,12 @@ public:
 private:
     friend class LLPanelLoginListener;
     void addFavoritesToStartLocation();
-    void addUsersWithFavoritesToUsername();
     void onSelectServer();
     void onLocationSLURL();
 
     static void setFields(LLPointer<LLCredential> credential);
 
     static void onClickConnect(bool commit_fields = true);
-    static void onClickNewAccount(void*);
     static void onClickVersion(void*);
     static void onClickForgotPassword(void*);
     static void onClickSignUp(void*);
@@ -109,7 +105,6 @@ private:
     static void onRememberUserCheck(void*);
     static void onRememberPasswordCheck(void*);
     static void onPassKey(LLLineEditor* caller, void* user_data);
-    static void updateServerCombo();
 
 private:
     std::unique_ptr<LLPanelLoginListener> mListener;
@@ -120,14 +115,14 @@ private:
     void            (*mCallback)(S32 option, void *userdata);
     void*           mCallbackData;
 
-    BOOL            mPasswordModified;
+    bool            mPasswordModified;
     bool            mShowFavorites;
 
     static LLPanelLogin* sInstance;
-    static BOOL     sCapslockDidNotification;
+    static bool     sCapslockDidNotification;
     bool            mFirstLoginThisInstall;
 
-    static BOOL sCredentialSet;
+    static bool sCredentialSet;
 
     unsigned int mUsernameLength;
     unsigned int mPasswordLength;
diff --git a/indra/newview/llpanelmaininventory.cpp b/indra/newview/llpanelmaininventory.cpp
index 5111241e92..ba52da0760 100644
--- a/indra/newview/llpanelmaininventory.cpp
+++ b/indra/newview/llpanelmaininventory.cpp
@@ -56,6 +56,7 @@
 #include "lltrans.h"
 #include "llviewermenu.h"
 #include "llviewertexturelist.h"
+#include "llviewerinventory.h"
 #include "llsidepanelinventory.h"
 #include "llfolderview.h"
 #include "llradiogroup.h"
@@ -79,11 +80,11 @@ class LLFloaterInventoryFinder : public LLFloater
 public:
     LLFloaterInventoryFinder( LLPanelMainInventory* inventory_view);
     virtual void draw();
-    /*virtual*/ BOOL    postBuild();
+    /*virtual*/ bool    postBuild();
     void changeFilter(LLInventoryFilter* filter);
     void updateElementsFromFilter();
-    BOOL getCheckShowEmpty();
-    BOOL getCheckSinceLogoff();
+    bool getCheckShowEmpty();
+    bool getCheckSinceLogoff();
     U32 getDateSearchDirection();
 
     void onCreatorSelfFilterCommit();
@@ -138,10 +139,10 @@ LLPanelMainInventory::LLPanelMainInventory(const LLPanel::Params& p)
 
 
     mSavedFolderState = new LLSaveFolderState();
-    mSavedFolderState->setApply(FALSE);
+    mSavedFolderState->setApply(false);
 }
 
-BOOL LLPanelMainInventory::postBuild()
+bool LLPanelMainInventory::postBuild()
 {
     gInventory.addObserver(this);
 
@@ -167,7 +168,7 @@ BOOL LLPanelMainInventory::postBuild()
     if (recent_items_panel)
     {
         // assign default values until we will be sure that we have setting to restore
-        recent_items_panel->setSinceLogoff(TRUE);
+        recent_items_panel->setSinceLogoff(true);
         recent_items_panel->setSortOrder(LLInventoryFilter::SO_DATE);
         recent_items_panel->setShowFolderState(LLInventoryFilter::SHOW_NON_EMPTY_FOLDERS);
         LLInventoryFilter& recent_filter = recent_items_panel->getFilter();
@@ -289,7 +290,7 @@ BOOL LLPanelMainInventory::postBuild()
     // Trigger callback for focus received so we can deselect items in inbox/outbox
     LLFocusableElement::setFocusReceivedCallback(boost::bind(&LLPanelMainInventory::onFocusReceived, this));
 
-    return TRUE;
+    return true;
 }
 
 // Destroys the object
@@ -379,11 +380,11 @@ void LLPanelMainInventory::startSearch()
     // this forces focus to line editor portion of search editor
     if (mFilterEditor)
     {
-        mFilterEditor->focusFirstItem(TRUE);
+        mFilterEditor->focusFirstItem(true);
     }
 }
 
-BOOL LLPanelMainInventory::handleKeyHere(KEY key, MASK mask)
+bool LLPanelMainInventory::handleKeyHere(KEY key, MASK mask)
 {
     LLFolderView* root_folder = mActivePanel ? mActivePanel->getRootFolder() : NULL;
     if (root_folder)
@@ -396,9 +397,9 @@ BOOL LLPanelMainInventory::handleKeyHere(KEY key, MASK mask)
             && mask == MASK_NONE)
         {
             // move focus to inventory proper
-            mActivePanel->setFocus(TRUE);
+            mActivePanel->setFocus(true);
             root_folder->scrollToShowSelection();
-            return TRUE;
+            return true;
         }
 
         if (mActivePanel->hasFocus() && key == KEY_UP)
@@ -595,7 +596,7 @@ void LLPanelMainInventory::findLinks(const LLUUID& item_id, const std::string& i
     filter.setFindAllLinksMode(item_name, item_id);
 
     mFilterEditor->setText(item_name);
-    mFilterEditor->setFocus(TRUE);
+    mFilterEditor->setFocus(true);
 }
 
 void LLPanelMainInventory::setSortBy(const LLSD& userdata)
@@ -722,17 +723,17 @@ void LLPanelMainInventory::updateSearchTypeCombo()
 }
 
 // static
-BOOL LLPanelMainInventory::filtersVisible(void* user_data)
+bool LLPanelMainInventory::filtersVisible(void* user_data)
 {
     LLPanelMainInventory* self = (LLPanelMainInventory*)user_data;
-    if(!self) return FALSE;
+    if(!self) return false;
 
     return self->getFinder() != NULL;
 }
 
 void LLPanelMainInventory::onClearSearch()
 {
-    BOOL initially_active = FALSE;
+    bool initially_active = false;
     LLFloater *finder = getFinder();
     if (mActivePanel && (getActivePanel() != mWornItemsPanel))
     {
@@ -750,7 +751,7 @@ void LLPanelMainInventory::onClearSearch()
     // re-open folders that were initially open in case filter was active
     if (mActivePanel && (mFilterSubString.size() || initially_active) && !mSingleFolderMode)
     {
-        mSavedFolderState->setApply(TRUE);
+        mSavedFolderState->setApply(true);
         mActivePanel->getRootFolder()->applyFunctorRecursively(*mSavedFolderState);
         LLOpenFoldersWithSelection opener;
         mActivePanel->getRootFolder()->applyFunctorRecursively(opener);
@@ -808,7 +809,7 @@ void LLPanelMainInventory::onFilterEdit(const std::string& search_string )
     // save current folder open state if no filter currently applied
     if (!mActivePanel->getFilter().isNotDefault())
     {
-        mSavedFolderState->setApply(FALSE);
+        mSavedFolderState->setApply(false);
         mActivePanel->getRootFolder()->applyFunctorRecursively(*mSavedFolderState);
     }
 
@@ -828,7 +829,7 @@ void LLPanelMainInventory::onFilterEdit(const std::string& search_string )
 
 
  //static
- BOOL LLPanelMainInventory::incrementalFind(LLFolderViewItem* first_item, const char *find_text, BOOL backward)
+ bool LLPanelMainInventory::incrementalFind(LLFolderViewItem* first_item, const char *find_text, bool backward)
  {
     LLPanelMainInventory* active_view = NULL;
 
@@ -848,23 +849,23 @@ void LLPanelMainInventory::onFilterEdit(const std::string& search_string )
 
     if (!active_view)
     {
-        return FALSE;
+        return false;
     }
 
     std::string search_string(find_text);
 
     if (search_string.empty())
     {
-        return FALSE;
+        return false;
     }
 
     if (active_view->getPanel() &&
         active_view->getPanel()->getRootFolder()->search(first_item, search_string, backward))
     {
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
  }
 
 void LLPanelMainInventory::onFilterSelected()
@@ -911,7 +912,7 @@ void LLPanelMainInventory::setFilterSubString(const std::string& string)
     mActivePanel->setFilterSubString(string);
 }
 
-BOOL LLPanelMainInventory::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLPanelMainInventory::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                          EDragAndDropType cargo_type,
                                          void* cargo_data,
                                          EAcceptance* accept,
@@ -919,7 +920,7 @@ BOOL LLPanelMainInventory::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
 {
     // Check to see if we are auto scrolling from the last frame
     LLInventoryPanel* panel = (LLInventoryPanel*)this->getActivePanel();
-    BOOL needsToScroll = panel->getScrollableContainer()->canAutoScroll(x, y);
+    bool needsToScroll = panel->getScrollableContainer()->canAutoScroll(x, y);
     if(mFilterTabs)
     {
         if(needsToScroll)
@@ -928,7 +929,7 @@ BOOL LLPanelMainInventory::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
         }
     }
 
-    BOOL handled = LLPanel::handleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data, accept, tooltip_msg);
+    bool handled = LLPanel::handleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data, accept, tooltip_msg);
 
     return handled;
 }
@@ -1080,7 +1081,7 @@ void LLPanelMainInventory::setSelectCallback(const LLFolderView::signal_t::slot_
     getChild<LLInventoryPanel>(RECENT_ITEMS)->setSelectCallback(cb);
 }
 
-void LLPanelMainInventory::onSelectionChange(LLInventoryPanel *panel, const std::deque<LLFolderViewItem*>& items, BOOL user_action)
+void LLPanelMainInventory::onSelectionChange(LLInventoryPanel *panel, const std::deque<LLFolderViewItem*>& items, bool user_action)
 {
     updateListCommands();
     panel->onSelectionChange(items, user_action);
@@ -1105,7 +1106,7 @@ LLFloaterInventoryFinder::LLFloaterInventoryFinder(LLPanelMainInventory* invento
     updateElementsFromFilter();
 }
 
-BOOL LLFloaterInventoryFinder::postBuild()
+bool LLFloaterInventoryFinder::postBuild()
 {
     const LLRect& viewrect = mPanelMainInventory->getRect();
     setRect(LLRect(viewrect.mLeft - getRect().getWidth(), viewrect.mTop, viewrect.mLeft, viewrect.mTop - getRect().getHeight()));
@@ -1127,7 +1128,7 @@ BOOL LLFloaterInventoryFinder::postBuild()
     childSetAction("Close", onCloseBtn, this);
 
     updateElementsFromFilter();
-    return TRUE;
+    return true;
 }
 void LLFloaterInventoryFinder::onTimeAgo(LLUICtrl *ctrl, void *user_data)
 {
@@ -1216,31 +1217,31 @@ void LLFloaterInventoryFinder::updateElementsFromFilter()
 void LLFloaterInventoryFinder::draw()
 {
     U64 filter = 0xffffffffffffffffULL;
-    BOOL filtered_by_all_types = TRUE;
+    bool filtered_by_all_types = true;
 
     if (!getChild<LLUICtrl>("check_animation")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_ANIMATION);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
 
     if (!getChild<LLUICtrl>("check_calling_card")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_CALLINGCARD);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!getChild<LLUICtrl>("check_clothing")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_WEARABLE);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!getChild<LLUICtrl>("check_gesture")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_GESTURE);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!getChild<LLUICtrl>("check_landmark")->getValue())
@@ -1248,56 +1249,56 @@ void LLFloaterInventoryFinder::draw()
 
     {
         filter &= ~(0x1 << LLInventoryType::IT_LANDMARK);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!getChild<LLUICtrl>("check_material")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_MATERIAL);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!getChild<LLUICtrl>("check_notecard")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_NOTECARD);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!getChild<LLUICtrl>("check_object")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_OBJECT);
         filter &= ~(0x1 << LLInventoryType::IT_ATTACHMENT);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!getChild<LLUICtrl>("check_script")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_LSL);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!getChild<LLUICtrl>("check_sound")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_SOUND);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!getChild<LLUICtrl>("check_texture")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_TEXTURE);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!getChild<LLUICtrl>("check_snapshot")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_SNAPSHOT);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!getChild<LLUICtrl>("check_settings")->getValue())
     {
         filter &= ~(0x1 << LLInventoryType::IT_SETTINGS);
-        filtered_by_all_types = FALSE;
+        filtered_by_all_types = false;
     }
 
     if (!filtered_by_all_types || (mPanelMainInventory->getPanel()->getFilter().getFilterTypes() & LLInventoryFilter::FILTERTYPE_DATE))
@@ -1388,7 +1389,7 @@ void LLFloaterInventoryFinder::onCreatorSelfFilterCommit()
     else if(!show_creator_self || !show_creator_other)
     {
         mPanelMainInventory->getCurrentFilter().setFilterCreator(LLInventoryFilter::FILTERCREATOR_OTHERS);
-        mCreatorOthers->set(TRUE);
+        mCreatorOthers->set(true);
     }
 }
 
@@ -1408,16 +1409,16 @@ void LLFloaterInventoryFinder::onCreatorOtherFilterCommit()
     else if(!show_creator_other || !show_creator_self)
     {
         mPanelMainInventory->getCurrentFilter().setFilterCreator(LLInventoryFilter::FILTERCREATOR_SELF);
-        mCreatorSelf->set(TRUE);
+        mCreatorSelf->set(true);
     }
 }
 
-BOOL LLFloaterInventoryFinder::getCheckShowEmpty()
+bool LLFloaterInventoryFinder::getCheckShowEmpty()
 {
     return getChild<LLUICtrl>("check_show_empty")->getValue();
 }
 
-BOOL LLFloaterInventoryFinder::getCheckSinceLogoff()
+bool LLFloaterInventoryFinder::getCheckSinceLogoff()
 {
     return getChild<LLUICtrl>("check_since_logoff")->getValue();
 }
@@ -1439,19 +1440,19 @@ void LLFloaterInventoryFinder::selectAllTypes(void* user_data)
     LLFloaterInventoryFinder* self = (LLFloaterInventoryFinder*)user_data;
     if(!self) return;
 
-    self->getChild<LLUICtrl>("check_animation")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_calling_card")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_clothing")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_gesture")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_landmark")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_material")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_notecard")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_object")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_script")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_sound")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_texture")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_snapshot")->setValue(TRUE);
-    self->getChild<LLUICtrl>("check_settings")->setValue(TRUE);
+    self->getChild<LLUICtrl>("check_animation")->setValue(true);
+    self->getChild<LLUICtrl>("check_calling_card")->setValue(true);
+    self->getChild<LLUICtrl>("check_clothing")->setValue(true);
+    self->getChild<LLUICtrl>("check_gesture")->setValue(true);
+    self->getChild<LLUICtrl>("check_landmark")->setValue(true);
+    self->getChild<LLUICtrl>("check_material")->setValue(true);
+    self->getChild<LLUICtrl>("check_notecard")->setValue(true);
+    self->getChild<LLUICtrl>("check_object")->setValue(true);
+    self->getChild<LLUICtrl>("check_script")->setValue(true);
+    self->getChild<LLUICtrl>("check_sound")->setValue(true);
+    self->getChild<LLUICtrl>("check_texture")->setValue(true);
+    self->getChild<LLUICtrl>("check_snapshot")->setValue(true);
+    self->getChild<LLUICtrl>("check_settings")->setValue(true);
 }
 
 //static
@@ -1460,19 +1461,19 @@ void LLFloaterInventoryFinder::selectNoTypes(void* user_data)
     LLFloaterInventoryFinder* self = (LLFloaterInventoryFinder*)user_data;
     if(!self) return;
 
-    self->getChild<LLUICtrl>("check_animation")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_calling_card")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_clothing")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_gesture")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_landmark")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_material")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_notecard")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_object")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_script")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_sound")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_texture")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_snapshot")->setValue(FALSE);
-    self->getChild<LLUICtrl>("check_settings")->setValue(FALSE);
+    self->getChild<LLUICtrl>("check_animation")->setValue(false);
+    self->getChild<LLUICtrl>("check_calling_card")->setValue(false);
+    self->getChild<LLUICtrl>("check_clothing")->setValue(false);
+    self->getChild<LLUICtrl>("check_gesture")->setValue(false);
+    self->getChild<LLUICtrl>("check_landmark")->setValue(false);
+    self->getChild<LLUICtrl>("check_material")->setValue(false);
+    self->getChild<LLUICtrl>("check_notecard")->setValue(false);
+    self->getChild<LLUICtrl>("check_object")->setValue(false);
+    self->getChild<LLUICtrl>("check_script")->setValue(false);
+    self->getChild<LLUICtrl>("check_sound")->setValue(false);
+    self->getChild<LLUICtrl>("check_texture")->setValue(false);
+    self->getChild<LLUICtrl>("check_snapshot")->setValue(false);
+    self->getChild<LLUICtrl>("check_settings")->setValue(false);
 }
 
 //////////////////////////////////////////////////////////////////////////////////
@@ -1999,14 +2000,14 @@ void LLPanelMainInventory::onCustomAction(const LLSD& userdata)
     }
 }
 
-void LLPanelMainInventory::onVisibilityChange( BOOL new_visibility )
+void LLPanelMainInventory::onVisibilityChange( bool new_visibility )
 {
     if(!new_visibility)
     {
         LLMenuGL* menu = (LLMenuGL*)mMenuAddHandle.get();
         if (menu)
         {
-            menu->setVisible(FALSE);
+            menu->setVisible(false);
         }
         getActivePanel()->getRootFolder()->finishRenamingItem();
     }
@@ -2037,12 +2038,12 @@ bool LLPanelMainInventory::isSaveTextureEnabled(const LLSD& userdata)
     return false;
 }
 
-BOOL LLPanelMainInventory::isActionEnabled(const LLSD& userdata)
+bool LLPanelMainInventory::isActionEnabled(const LLSD& userdata)
 {
     const std::string command_name = userdata.asString();
     if (command_name == "not_empty")
     {
-        BOOL status = FALSE;
+        bool status = false;
         LLFolderViewItem* current_item = getActivePanel()->getRootFolder()->getCurSelectedItem();
         if (current_item)
         {
@@ -2071,15 +2072,15 @@ BOOL LLPanelMainInventory::isActionEnabled(const LLSD& userdata)
         }
         else{
         LLFolderViewItem* current_item = getActivePanel()->getRootFolder()->getCurSelectedItem();
-        if (!current_item) return FALSE;
+        if (!current_item) return false;
         item_id = static_cast<LLFolderViewModelItemInventory*>(current_item->getViewModelItem())->getUUID();
         }
         const LLViewerInventoryItem *item = gInventory.getItem(item_id);
         if (item && item->getIsLinkType() && !item->getIsBrokenLink())
         {
-            return TRUE;
+            return true;
         }
-        return FALSE;
+        return false;
     }
 
     if (command_name == "find_links")
@@ -2092,30 +2093,30 @@ BOOL LLPanelMainInventory::isActionEnabled(const LLSD& userdata)
         else{
         LLFolderView* root = getActivePanel()->getRootFolder();
         std::set<LLFolderViewItem*> selection_set = root->getSelectionList();
-        if (selection_set.size() != 1) return FALSE;
+        if (selection_set.size() != 1) return false;
         LLFolderViewItem* current_item = root->getCurSelectedItem();
-        if (!current_item) return FALSE;
+        if (!current_item) return false;
         item_id = static_cast<LLFolderViewModelItemInventory*>(current_item->getViewModelItem())->getUUID();
         }
         const LLInventoryObject *obj = gInventory.getObject(item_id);
         if (obj && !obj->getIsLinkType() && LLAssetType::lookupCanLink(obj->getType()))
         {
-            return TRUE;
+            return true;
         }
-        return FALSE;
+        return false;
     }
     // This doesn't currently work, since the viewer can't change an assetID an item.
     if (command_name == "regenerate_link")
     {
         LLFolderViewItem* current_item = getActivePanel()->getRootFolder()->getCurSelectedItem();
-        if (!current_item) return FALSE;
+        if (!current_item) return false;
         const LLUUID& item_id = static_cast<LLFolderViewModelItemInventory*>(current_item->getViewModelItem())->getUUID();
         const LLViewerInventoryItem *item = gInventory.getItem(item_id);
         if (item && item->getIsBrokenLink())
         {
-            return TRUE;
+            return true;
         }
-        return FALSE;
+        return false;
     }
 
     if (command_name == "share")
@@ -2126,9 +2127,9 @@ BOOL LLPanelMainInventory::isActionEnabled(const LLSD& userdata)
         }
         else{
         LLFolderViewItem* current_item = getActivePanel()->getRootFolder()->getCurSelectedItem();
-        if (!current_item) return FALSE;
+        if (!current_item) return false;
         LLSidepanelInventory* parent = LLFloaterSidePanelContainer::getPanel<LLSidepanelInventory>("inventory");
-        return parent ? parent->canShare() : FALSE;
+        return parent ? parent->canShare() : false;
         }
     }
     if (command_name == "empty_trash")
@@ -2144,7 +2145,7 @@ BOOL LLPanelMainInventory::isActionEnabled(const LLSD& userdata)
         return children != LLInventoryModel::CHILDREN_NO && gInventory.isCategoryComplete(trash_id);
     }
 
-    return TRUE;
+    return true;
 }
 
 bool LLPanelMainInventory::isActionVisible(const LLSD& userdata)
@@ -2162,7 +2163,7 @@ bool LLPanelMainInventory::isActionVisible(const LLSD& userdata)
     return true;
 }
 
-BOOL LLPanelMainInventory::isActionChecked(const LLSD& userdata)
+bool LLPanelMainInventory::isActionChecked(const LLSD& userdata)
 {
     U32 sort_order_mask = (mSingleFolderMode && isGalleryViewMode()) ? mCombinationGalleryPanel->getSortOrder() :  getActivePanel()->getSortOrder();
     const std::string command_name = userdata.asString();
@@ -2219,7 +2220,7 @@ BOOL LLPanelMainInventory::isActionChecked(const LLSD& userdata)
         return isCombinationViewMode();
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLPanelMainInventory::setUploadCostIfNeeded()
@@ -2338,7 +2339,7 @@ void LLPanelMainInventory::onCombinationGallerySelectionChanged(const LLUUID& ca
 {
 }
 
-void LLPanelMainInventory::onCombinationInventorySelectionChanged(const std::deque<LLFolderViewItem*>& items, BOOL user_action)
+void LLPanelMainInventory::onCombinationInventorySelectionChanged(const std::deque<LLFolderViewItem*>& items, bool user_action)
 {
     onSelectionChange(mCombinationInventoryPanel, items, user_action);
 }
@@ -2470,9 +2471,9 @@ void LLPanelMainInventory::updateCombinationVisibility()
         && mCombInvUUIDNeedsRename.notNull()
         && mCombinationInventoryPanel->areViewsInitialized())
     {
-        mCombinationInventoryPanel->setSelectionByID(mCombInvUUIDNeedsRename, TRUE);
+        mCombinationInventoryPanel->setSelectionByID(mCombInvUUIDNeedsRename, true);
         mCombinationInventoryPanel->getRootFolder()->scrollToShowSelection();
-        mCombinationInventoryPanel->getRootFolder()->setNeedsAutoRename(TRUE);
+        mCombinationInventoryPanel->getRootFolder()->setNeedsAutoRename(true);
         mCombInvUUIDNeedsRename.setNull();
     }
 }
diff --git a/indra/newview/llpanelmaininventory.h b/indra/newview/llpanelmaininventory.h
index 33205fc062..cad2501645 100644
--- a/indra/newview/llpanelmaininventory.h
+++ b/indra/newview/llpanelmaininventory.h
@@ -65,7 +65,7 @@ public:
     LLPanelMainInventory(const LLPanel::Params& p = getDefaultParams());
     ~LLPanelMainInventory();
 
-    BOOL postBuild();
+    bool postBuild();
 
     enum EViewModeType
     {
@@ -74,17 +74,17 @@ public:
         MODE_COMBINATION
     };
 
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool handleKeyHere(KEY key, MASK mask);
 
     // Inherited functionality
-    /*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    /*virtual*/ bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                        EDragAndDropType cargo_type,
                                        void* cargo_data,
                                        EAcceptance* accept,
                                        std::string& tooltip_msg);
     /*virtual*/ void changed(U32);
     /*virtual*/ void draw();
-    /*virtual*/ void    onVisibilityChange ( BOOL new_visibility );
+    /*virtual*/ void    onVisibilityChange ( bool new_visibility );
 
     LLInventoryPanel* getPanel() { return mActivePanel; }
     LLInventoryPanel* getActivePanel() { return mActivePanel; }
@@ -144,14 +144,14 @@ protected:
     void setFilterTextFromFilter();
     void startSearch();
 
-    void onSelectionChange(LLInventoryPanel *panel, const std::deque<LLFolderViewItem*>& items, BOOL user_action);
+    void onSelectionChange(LLInventoryPanel *panel, const std::deque<LLFolderViewItem*>& items, bool user_action);
 
-    static BOOL filtersVisible(void* user_data);
+    static bool filtersVisible(void* user_data);
     void onClearSearch();
     static void onFoldersByName(void *user_data);
-    static BOOL checkFoldersByName(void *user_data);
+    static bool checkFoldersByName(void *user_data);
 
-    static BOOL incrementalFind(LLFolderViewItem* first_item, const char *find_text, BOOL backward);
+    static bool incrementalFind(LLFolderViewItem* first_item, const char *find_text, bool backward);
     void onFilterSelected();
 
     const std::string getFilterSubString();
@@ -224,8 +224,8 @@ protected:
     void onAddButtonClick();
     void showActionMenu(LLMenuGL* menu, std::string spawning_view_name);
     void onClipboardAction(const LLSD& userdata);
-    BOOL isActionEnabled(const LLSD& command_name);
-    BOOL isActionChecked(const LLSD& userdata);
+    bool isActionEnabled(const LLSD& command_name);
+    bool isActionChecked(const LLSD& userdata);
     void onCustomAction(const LLSD& command_name);
     bool isActionVisible(const LLSD& userdata);
     static bool hasSettingsInventory();
@@ -235,7 +235,7 @@ protected:
 
     void onCombinationRootChanged(bool gallery_clicked);
     void onCombinationGallerySelectionChanged(const LLUUID& category_id);
-    void onCombinationInventorySelectionChanged(const std::deque<LLFolderViewItem*>& items, BOOL user_action);
+    void onCombinationInventorySelectionChanged(const std::deque<LLFolderViewItem*>& items, bool user_action);
     /**
      * Set upload cost in "Upload" sub menu.
      */
diff --git a/indra/newview/llpanelmarketplaceinbox.cpp b/indra/newview/llpanelmarketplaceinbox.cpp
index 331bc96275..0925351350 100644
--- a/indra/newview/llpanelmarketplaceinbox.cpp
+++ b/indra/newview/llpanelmarketplaceinbox.cpp
@@ -54,7 +54,7 @@ LLPanelMarketplaceInbox::LLPanelMarketplaceInbox(const Params& p)
     , mSavedFolderState(NULL)
 {
     mSavedFolderState = new LLSaveFolderState();
-    mSavedFolderState->setApply(FALSE);
+    mSavedFolderState->setApply(false);
 }
 
 LLPanelMarketplaceInbox::~LLPanelMarketplaceInbox()
@@ -63,14 +63,14 @@ LLPanelMarketplaceInbox::~LLPanelMarketplaceInbox()
 }
 
 // virtual
-BOOL LLPanelMarketplaceInbox::postBuild()
+bool LLPanelMarketplaceInbox::postBuild()
 {
     LLFocusableElement::setFocusReceivedCallback(boost::bind(&LLPanelMarketplaceInbox::onFocusReceived, this));
 
     mFreshCountCtrl = getChild<LLUICtrl>("inbox_fresh_new_count");
     mInboxButton = getChild<LLButton>("inbox_btn");
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelMarketplaceInbox::onSelectionChange()
@@ -106,7 +106,7 @@ LLInventoryPanel * LLPanelMarketplaceInbox::setupInventoryPanel()
     mInventoryPanel->getFilter().setEmptyLookupMessage("InventoryInboxNoItems");
 
     // Hide the placeholder text
-    inbox_inventory_placeholder->setVisible(FALSE);
+    inbox_inventory_placeholder->setVisible(false);
 
     return mInventoryPanel;
 }
@@ -122,10 +122,10 @@ void LLPanelMarketplaceInbox::onFocusReceived()
     gSavedPerAccountSettings.setU32("LastInventoryInboxActivity", time_corrected());
 }
 
-BOOL LLPanelMarketplaceInbox::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop, EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string& tooltip_msg)
+bool LLPanelMarketplaceInbox::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop, EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string& tooltip_msg)
 {
     *accept = ACCEPT_NO;
-    return TRUE;
+    return true;
 }
 
 U32 LLPanelMarketplaceInbox::getFreshItemCount() const
@@ -179,7 +179,7 @@ U32 LLPanelMarketplaceInbox::getFreshItemCount() const
 
 U32 LLPanelMarketplaceInbox::getTotalItemCount() const
 {
-    U32 item_count = 0;
+    size_t item_count = 0;
 
     if (mInventoryPanel)
     {
@@ -192,7 +192,7 @@ U32 LLPanelMarketplaceInbox::getTotalItemCount() const
         }
     }
 
-    return item_count;
+    return static_cast<U32>(item_count);
 }
 
 void LLPanelMarketplaceInbox::onClearSearch()
@@ -200,7 +200,7 @@ void LLPanelMarketplaceInbox::onClearSearch()
     if (mInventoryPanel)
     {
         mInventoryPanel->setFilterSubString(LLStringUtil::null);
-        mSavedFolderState->setApply(TRUE);
+        mSavedFolderState->setApply(true);
         mInventoryPanel->getRootFolder()->applyFunctorRecursively(*mSavedFolderState);
         LLOpenFoldersWithSelection opener;
         mInventoryPanel->getRootFolder()->applyFunctorRecursively(opener);
@@ -220,7 +220,7 @@ void LLPanelMarketplaceInbox::onFilterEdit(const std::string& search_string)
 
         if (!mInventoryPanel->getFilter().isNotDefault())
         {
-            mSavedFolderState->setApply(FALSE);
+            mSavedFolderState->setApply(false);
             mInventoryPanel->getRootFolder()->applyFunctorRecursively(*mSavedFolderState);
         }
         mInventoryPanel->setFilterSubString(search_string);
@@ -274,7 +274,7 @@ void LLPanelMarketplaceInbox::draw()
     {
         mInboxButton->setLabel(getString("InboxLabelNoArg"));
 
-        mFreshCountCtrl->setVisible(FALSE);
+        mFreshCountCtrl->setVisible(false);
     }
 
     LLPanel::draw();
diff --git a/indra/newview/llpanelmarketplaceinbox.h b/indra/newview/llpanelmarketplaceinbox.h
index 1393bc1efe..e711bb5e5c 100644
--- a/indra/newview/llpanelmarketplaceinbox.h
+++ b/indra/newview/llpanelmarketplaceinbox.h
@@ -48,11 +48,11 @@ public:
     LLPanelMarketplaceInbox(const Params& p = getDefaultParams());
     ~LLPanelMarketplaceInbox();
 
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
 
-    /*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop, EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string& tooltip_msg);
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop, EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string& tooltip_msg) override;
 
-    /*virtual*/ void draw();
+    void draw() override;
 
     LLInventoryPanel * setupInventoryPanel();
 
@@ -68,7 +68,7 @@ private:
 
     void onSelectionChange();
 
-    void onFocusReceived();
+    void onFocusReceived() override;
 
 private:
     LLUICtrl *          mFreshCountCtrl;
diff --git a/indra/newview/llpanelmarketplaceinboxinventory.cpp b/indra/newview/llpanelmarketplaceinboxinventory.cpp
index 6fd2b7e964..526462b940 100644
--- a/indra/newview/llpanelmarketplaceinboxinventory.cpp
+++ b/indra/newview/llpanelmarketplaceinboxinventory.cpp
@@ -176,13 +176,13 @@ void LLInboxFolderViewFolder::draw()
 
 }
 
-BOOL LLInboxFolderViewFolder::handleMouseDown( S32 x, S32 y, MASK mask )
+bool LLInboxFolderViewFolder::handleMouseDown( S32 x, S32 y, MASK mask )
 {
     deFreshify();
     return LLFolderViewFolder::handleMouseDown(x, y, mask);
 }
 
-BOOL LLInboxFolderViewFolder::handleDoubleClick( S32 x, S32 y, MASK mask )
+bool LLInboxFolderViewFolder::handleDoubleClick( S32 x, S32 y, MASK mask )
 {
     deFreshify();
     return LLFolderViewFolder::handleDoubleClick(x, y, mask);
@@ -252,7 +252,7 @@ void LLInboxFolderViewItem::addToFolder(LLFolderViewFolder* folder)
     }
 }
 
-BOOL LLInboxFolderViewItem::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLInboxFolderViewItem::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     deFreshify();
 
diff --git a/indra/newview/llpanelmarketplaceinboxinventory.h b/indra/newview/llpanelmarketplaceinboxinventory.h
index eb5d809db1..0516846138 100644
--- a/indra/newview/llpanelmarketplaceinboxinventory.h
+++ b/indra/newview/llpanelmarketplaceinboxinventory.h
@@ -71,8 +71,8 @@ public:
     void addItem(LLFolderViewItem* item);
     void draw();
 
-    BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
+    bool handleMouseDown(S32 x, S32 y, MASK mask);
+    bool handleDoubleClick(S32 x, S32 y, MASK mask);
     void selectItem();
 
     void computeFreshness();
@@ -101,7 +101,7 @@ public:
     LLInboxFolderViewItem(const Params& p);
 
     void addToFolder(LLFolderViewFolder* folder);
-    BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
+    bool handleDoubleClick(S32 x, S32 y, MASK mask);
 
     void draw();
 
diff --git a/indra/newview/llpanelmediasettingsgeneral.cpp b/indra/newview/llpanelmediasettingsgeneral.cpp
index 43012d85f4..380c2827ac 100644
--- a/indra/newview/llpanelmediasettingsgeneral.cpp
+++ b/indra/newview/llpanelmediasettingsgeneral.cpp
@@ -80,7 +80,7 @@ LLPanelMediaSettingsGeneral::LLPanelMediaSettingsGeneral() :
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLPanelMediaSettingsGeneral::postBuild()
+bool LLPanelMediaSettingsGeneral::postBuild()
 {
     // connect member vars with UI widgets
     mAutoLoop = getChild< LLCheckBoxCtrl >( LLMediaEntry::AUTO_LOOP_KEY );
@@ -121,7 +121,7 @@ void LLPanelMediaSettingsGeneral::draw()
     checkHomeUrlPassesWhitelist();
 
     // enable/disable pixel values image entry based on auto scale checkbox
-    if ( mAutoScale->getValue().asBoolean() == false )
+    if (!mAutoScale->getValue().asBoolean())
     {
         getChildView( LLMediaEntry::WIDTH_PIXELS_KEY )->setEnabled( true );
         getChildView( LLMediaEntry::HEIGHT_PIXELS_KEY )->setEnabled( true );
@@ -134,10 +134,9 @@ void LLPanelMediaSettingsGeneral::draw()
 
     // enable/disable UI based on type of media
     bool reset_button_is_active = true;
-    if( mPreviewMedia )
+    if (mPreviewMedia)
     {
-        LLPluginClassMedia* media_plugin = mPreviewMedia->getMediaPlugin();
-        if( media_plugin )
+        if (LLPluginClassMedia* media_plugin = mPreviewMedia->getMediaPlugin())
         {
             // turn off volume (if we can) for preview. Note: this really only
             // works for QuickTime movies right now - no way to control the
@@ -147,8 +146,7 @@ void LLPanelMediaSettingsGeneral::draw()
             // some controls are only appropriate for time or browser type plugins
             // so we selectively enable/disable them - need to do it in draw
             // because the information from plugins arrives assynchronously
-            bool show_time_controls = media_plugin->pluginSupportsMediaTime();
-            if ( show_time_controls )
+            if (media_plugin->pluginSupportsMediaTime())
             {
                 getChildView( LLMediaEntry::CURRENT_URL_KEY )->setEnabled( false );
                 reset_button_is_active = false;
diff --git a/indra/newview/llpanelmediasettingsgeneral.h b/indra/newview/llpanelmediasettingsgeneral.h
index 10ce565800..9fe97b9121 100644
--- a/indra/newview/llpanelmediasettingsgeneral.h
+++ b/indra/newview/llpanelmediasettingsgeneral.h
@@ -53,7 +53,7 @@ public:
     // Hook that the floater calls after applying changes to the panel
     void postApply();
 
-    BOOL postBuild();
+    bool postBuild();
     /*virtual*/ void draw();
     /*virtual*/ void onClose(bool app_quitting);
 
diff --git a/indra/newview/llpanelmediasettingspermissions.cpp b/indra/newview/llpanelmediasettingspermissions.cpp
index 437bd2816e..868d492083 100644
--- a/indra/newview/llpanelmediasettingspermissions.cpp
+++ b/indra/newview/llpanelmediasettingspermissions.cpp
@@ -64,7 +64,7 @@ LLPanelMediaSettingsPermissions::LLPanelMediaSettingsPermissions() :
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLPanelMediaSettingsPermissions::postBuild()
+bool LLPanelMediaSettingsPermissions::postBuild()
 {
     // connect member vars with UI widgets
     mControls = getChild< LLComboBox >( LLMediaEntry::CONTROLS_KEY );
@@ -95,7 +95,7 @@ void LLPanelMediaSettingsPermissions::draw()
 
     getChild<LLUICtrl>("perms_group_name")->setValue(LLStringUtil::null);
     LLUUID group_id;
-    BOOL groups_identical = LLSelectMgr::getInstance()->selectGetGroup(group_id);
+    bool groups_identical = LLSelectMgr::getInstance()->selectGetGroup(group_id);
     if (groups_identical)
     {
         if(mPermsGroupName)
@@ -107,7 +107,7 @@ void LLPanelMediaSettingsPermissions::draw()
     {
         if(mPermsGroupName)
         {
-            mPermsGroupName->setNameID(LLUUID::null, TRUE);
+            mPermsGroupName->setNameID(LLUUID::null, true);
             mPermsGroupName->refresh(LLUUID::null, std::string(), true);
         }
     }
diff --git a/indra/newview/llpanelmediasettingspermissions.h b/indra/newview/llpanelmediasettingspermissions.h
index 707c5af61d..3d920b2c39 100644
--- a/indra/newview/llpanelmediasettingspermissions.h
+++ b/indra/newview/llpanelmediasettingspermissions.h
@@ -44,7 +44,7 @@ public:
     LLPanelMediaSettingsPermissions();
     ~LLPanelMediaSettingsPermissions();
 
-    BOOL postBuild();
+    bool postBuild();
     virtual void draw();
 
     // XXX TODO: put these into a common parent class?
diff --git a/indra/newview/llpanelmediasettingssecurity.cpp b/indra/newview/llpanelmediasettingssecurity.cpp
index 96ec1b17eb..6e4e9f426d 100644
--- a/indra/newview/llpanelmediasettingssecurity.cpp
+++ b/indra/newview/llpanelmediasettingssecurity.cpp
@@ -58,7 +58,7 @@ LLPanelMediaSettingsSecurity::LLPanelMediaSettingsSecurity() :
 
 ////////////////////////////////////////////////////////////////////////////////
 //
-BOOL LLPanelMediaSettingsSecurity::postBuild()
+bool LLPanelMediaSettingsSecurity::postBuild()
 {
     mEnableWhiteList = getChild< LLCheckBoxCtrl >( LLMediaEntry::WHITELIST_ENABLE_KEY );
     mWhiteListList = getChild< LLScrollListCtrl >( LLMediaEntry::WHITELIST_KEY );
diff --git a/indra/newview/llpanelmediasettingssecurity.h b/indra/newview/llpanelmediasettingssecurity.h
index ecb4218e01..23c68a8050 100644
--- a/indra/newview/llpanelmediasettingssecurity.h
+++ b/indra/newview/llpanelmediasettingssecurity.h
@@ -40,7 +40,7 @@ public:
     LLPanelMediaSettingsSecurity();
     ~LLPanelMediaSettingsSecurity();
 
-    BOOL postBuild();
+    bool postBuild();
     virtual void draw();
 
     // XXX TODO: put these into a common parent class?
diff --git a/indra/newview/llpanelnearbymedia.cpp b/indra/newview/llpanelnearbymedia.cpp
index a46894988c..2dd4866da3 100644
--- a/indra/newview/llpanelnearbymedia.cpp
+++ b/indra/newview/llpanelnearbymedia.cpp
@@ -29,7 +29,9 @@
 #include "llpanelnearbymedia.h"
 
 #include "llaudioengine.h"
+#include "llbase64.h"
 #include "llcheckboxctrl.h"
+#include "llclipboard.h"
 #include "llcombobox.h"
 #include "llresizebar.h"
 #include "llresizehandle.h"
@@ -53,7 +55,9 @@
 #include "llvovolume.h"
 #include "llstatusbar.h"
 #include "llsdutil.h"
+#include "lltoggleablemenu.h"
 #include "llvieweraudio.h"
+#include "llviewermenu.h"
 
 #include "llfloaterreg.h"
 #include "llfloaterpreference.h" // for the gear icon
@@ -74,10 +78,10 @@ static const LLUUID PARCEL_AUDIO_LIST_ITEM_UUID = LLUUID("DF4B020D-8A24-4B95-AB5
 LLPanelNearByMedia::LLPanelNearByMedia()
 :   mMediaList(NULL),
       mEnableAllCtrl(NULL),
-      mAllMediaDisabled(false),
       mDebugInfoVisible(false),
       mParcelMediaItem(NULL),
-      mParcelAudioItem(NULL)
+      mParcelAudioItem(NULL),
+      mMoreLessBtn(NULL)
 {
     // This is just an initial value, mParcelAudioAutoStart does not affect ParcelMediaAutoPlayEnable
     mParcelAudioAutoStart = gSavedSettings.getS32("ParcelMediaAutoPlayEnable") != 0
@@ -97,6 +101,18 @@ LLPanelNearByMedia::LLPanelNearByMedia()
     mCommitCallbackRegistrar.add("SelectedMediaCtrl.Zoom",      boost::bind(&LLPanelNearByMedia::onClickSelectedMediaZoom, this));
     mCommitCallbackRegistrar.add("SelectedMediaCtrl.Unzoom",    boost::bind(&LLPanelNearByMedia::onClickSelectedMediaUnzoom, this));
 
+    // Context menu handler.
+    mCommitCallbackRegistrar.add("SelectedMediaCtrl.Action",
+                                 [this](LLUICtrl* ctrl, const LLSD& data)
+                                 {
+                                     onMenuAction(data);
+                                 });
+    mEnableCallbackRegistrar.add("SelectedMediaCtrl.Visible",
+                                 [this](LLUICtrl* ctrl, const LLSD& data)
+                                 {
+                                     return onMenuVisible(data);
+                                 });
+
     buildFromFile( "panel_nearby_media.xml");
 }
 
@@ -104,7 +120,7 @@ LLPanelNearByMedia::~LLPanelNearByMedia()
 {
 }
 
-BOOL LLPanelNearByMedia::postBuild()
+bool LLPanelNearByMedia::postBuild()
 {
     LLPanelPulldown::postBuild();
 
@@ -147,6 +163,7 @@ BOOL LLPanelNearByMedia::postBuild()
     mUnzoomCtrl = getChild<LLUICtrl>("unzoom");
     mVolumeSlider = getChild<LLSlider>("volume_slider");
     mMuteBtn = getChild<LLButton>("mute_btn");
+    mMoreLessBtn = getChild<LLButton>("more_btn");
 
     mEmptyNameString = getString("empty_item_text");
     mParcelMediaName = getString("parcel_media_name");
@@ -154,8 +171,8 @@ BOOL LLPanelNearByMedia::postBuild()
     mPlayingString = getString("playing_suffix");
 
     mMediaList->setDoubleClickCallback(onZoomMedia, this);
-    mMediaList->sortByColumnIndex(PROXIMITY_COLUMN, TRUE);
-    mMediaList->sortByColumnIndex(VISIBILITY_COLUMN, FALSE);
+    mMediaList->sortByColumnIndex(PROXIMITY_COLUMN, true);
+    mMediaList->sortByColumnIndex(VISIBILITY_COLUMN, false);
 
     refreshList();
     updateControls();
@@ -166,10 +183,15 @@ BOOL LLPanelNearByMedia::postBuild()
     mLessRect = getRect();
     mLessRect.mBottom = minimized_controls->getRect().mBottom;
 
-    getChild<LLUICtrl>("more_btn")->setVisible(false);
+    mMoreLessBtn->setVisible(false);
     onMoreLess();
 
-    return TRUE;
+    mContextMenu = LLUICtrlFactory::getInstance()->createFromFile<LLToggleableMenu>(
+        "menu_nearby_media.xml",
+        gMenuHolder,
+        LLViewerMenuHolderGL::child_registry_t::instance());
+
+    return true;
 }
 
 void LLPanelNearByMedia::handleMediaAutoPlayChanged(const LLSD& newvalue)
@@ -189,12 +211,11 @@ void LLPanelNearByMedia::handleMediaAutoPlayChanged(const LLSD& newvalue)
 }
 
 /*virtual*/
-void LLPanelNearByMedia::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLPanelNearByMedia::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLPanelPulldown::reshape(width, height, called_from_parent);
 
-    LLButton* more_btn = findChild<LLButton>("more_btn");
-    if (more_btn && more_btn->getValue().asBoolean())
+    if (mMoreLessBtn && mMoreLessBtn->getValue().asBoolean())
     {
         mMoreRect = getRect();
     }
@@ -220,7 +241,7 @@ void LLPanelNearByMedia::draw()
 }
 
 /*virtual*/
-BOOL LLPanelNearByMedia::handleHover(S32 x, S32 y, MASK mask)
+bool LLPanelNearByMedia::handleHover(S32 x, S32 y, MASK mask)
 {
     LLPanelPulldown::handleHover(x, y, mask);
 
@@ -234,6 +255,42 @@ BOOL LLPanelNearByMedia::handleHover(S32 x, S32 y, MASK mask)
     return true;
 }
 
+bool LLPanelNearByMedia::handleRightMouseDown(S32 x, S32 y, MASK mask)
+{
+    S32 x_list, y_list;
+    localPointToOtherView(x, y, &x_list, &y_list, mMediaList);
+    if (mMoreLessBtn->getToggleState()
+        && mMediaList->pointInView(x_list, y_list))
+    {
+        LLScrollListItem* hit_item = mMediaList->hitItem(x_list, y_list);
+        bool selected = hit_item && hit_item->getSelected();
+        if (!selected)
+        {
+            selected = mMediaList->selectItemAt(x_list, y_list, mask);
+        }
+
+        if (selected && mContextMenu)
+        {
+            mContextMenu->buildDrawLabels();
+            mContextMenu->updateParent(LLMenuGL::sMenuContainer);
+            LLMenuGL::showPopup(this, mContextMenu, x, y);
+            return true;
+        }
+    }
+
+    return LLPanelPulldown::handleRightMouseDown(x, y, mask);
+}
+
+
+void LLPanelNearByMedia::onVisibilityChange(bool new_visibility)
+{
+    if (!new_visibility && mContextMenu->getVisible())
+    {
+        gMenuHolder->hideMenus();
+    }
+    LLPanelPulldown::onVisibilityChange(new_visibility);
+}
+
 bool LLPanelNearByMedia::getParcelAudioAutoStart()
 {
     return mParcelAudioAutoStart;
@@ -923,7 +980,7 @@ void LLPanelNearByMedia::onAdvancedButtonClick()
 
 void LLPanelNearByMedia::onMoreLess()
 {
-    bool is_more = getChild<LLButton>("more_btn")->getToggleState();
+    bool is_more = mMoreLessBtn->getToggleState();
     mNearbyMediaPanel->setVisible(is_more);
 
     // enable resizing when expanded
@@ -934,7 +991,7 @@ void LLPanelNearByMedia::onMoreLess()
 
     setShape(new_rect);
 
-    getChild<LLUICtrl>("more_btn")->setVisible(true);
+    mMoreLessBtn->setVisible(true);
 }
 
 void LLPanelNearByMedia::updateControls()
@@ -1174,6 +1231,53 @@ void LLPanelNearByMedia::onClickSelectedMediaUnzoom()
     LLViewerMediaFocus::getInstance()->unZoom();
 }
 
+void LLPanelNearByMedia::onMenuAction(const LLSD& userdata)
+{
+    const std::string command_name = userdata.asString();
+    if ("copy_url" == command_name)
+    {
+        LLClipboard::instance().reset();
+        std::string url = getSelectedUrl();
+
+        if (!url.empty())
+        {
+            LLClipboard::instance().copyToClipboard(utf8str_to_wstring(url), 0, static_cast<S32>(url.size()));
+        }
+    }
+    else if ("copy_data" == command_name)
+    {
+        LLClipboard::instance().reset();
+        std::string url = getSelectedUrl();
+        static const std::string encoding_specifier = "base64,";
+        size_t pos = url.find(encoding_specifier);
+        if (pos != std::string::npos)
+        {
+            pos += encoding_specifier.size();
+            std::string res = LLBase64::decodeAsString(url.substr(pos));
+            LLClipboard::instance().copyToClipboard(utf8str_to_wstring(res), 0, static_cast<S32>(res.size()));
+        }
+        else
+        {
+            url = LLURI::unescape(url);
+            LLClipboard::instance().copyToClipboard(utf8str_to_wstring(url), 0, static_cast<S32>(url.size()));
+        }
+    }
+}
+
+bool LLPanelNearByMedia::onMenuVisible(const LLSD& userdata)
+{
+    const std::string command_name = userdata.asString();
+    if ("copy_data" == command_name)
+    {
+        std::string url = getSelectedUrl();
+        if (url.rfind("data:", 0) == 0)
+        {
+            // might be a a good idea to permit text/html only
+            return true;
+        }
+    }
+    return false;
+}
 
 // static
 void LLPanelNearByMedia::getNameAndUrlHelper(LLViewerMediaImpl* impl, std::string& name, std::string & url, const std::string &defaultName)
@@ -1200,3 +1304,27 @@ void LLPanelNearByMedia::getNameAndUrlHelper(LLViewerMediaImpl* impl, std::strin
     }
 }
 
+std::string LLPanelNearByMedia::getSelectedUrl()
+{
+    std::string url;
+    LLUUID selected_media_id = mMediaList->getValue().asUUID();
+    if (selected_media_id == PARCEL_AUDIO_LIST_ITEM_UUID)
+    {
+        url = LLViewerMedia::getInstance()->getParcelAudioURL();
+    }
+    else if (selected_media_id == PARCEL_MEDIA_LIST_ITEM_UUID)
+    {
+        url = LLViewerParcelMedia::getInstance()->getURL();
+    }
+    else
+    {
+        LLViewerMediaImpl* impl = LLViewerMedia::getInstance()->getMediaImplFromTextureID(selected_media_id);
+        if (NULL != impl)
+        {
+            std::string name;
+            getNameAndUrlHelper(impl, name, url, mEmptyNameString);
+        }
+    }
+    return url;
+}
+
diff --git a/indra/newview/llpanelnearbymedia.h b/indra/newview/llpanelnearbymedia.h
index 703447d85a..3154812745 100644
--- a/indra/newview/llpanelnearbymedia.h
+++ b/indra/newview/llpanelnearbymedia.h
@@ -36,6 +36,7 @@ class LLSlider;
 class LLSliderCtrl;
 class LLCheckBoxCtrl;
 class LLTextBox;
+class LLToggleableMenu;
 class LLComboBox;
 class LLViewerMediaImpl;
 
@@ -43,10 +44,12 @@ class LLPanelNearByMedia : public LLPanelPulldown
 {
 public:
 
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void draw();
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent);
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
+    bool postBuild() override;
+    void draw() override;
+    void reshape(S32 width, S32 height, bool called_from_parent) override;
+    bool handleHover(S32 x, S32 y, MASK mask) override;
+    bool handleRightMouseDown(S32 x, S32 y, MASK mask) override;
+    void onVisibilityChange(bool new_visibility) override;
 
     // this is part of the nearby media *dialog* so we can track whether
     // the user *implicitly* wants audio on or off via their *explicit*
@@ -104,15 +107,12 @@ private:
     void onClickDisableAll();
     void onClickEnableParcelMedia();
     void onClickDisableParcelMedia();
-    void onClickMuteParcelMedia();
-    void onParcelMediaVolumeSlider();
     void onClickParcelMediaPlay();
     void onClickParcelMediaStop();
     void onClickParcelMediaPause();
     void onClickParcelAudioPlay();
     void onClickParcelAudioStop();
     void onClickParcelAudioPause();
-    void onCheckAutoPlay();
     void onAdvancedButtonClick();
     void onMoreLess();
 
@@ -124,6 +124,7 @@ private:
     bool setDisabled(const LLUUID &id, bool disabled);
 
     static void getNameAndUrlHelper(LLViewerMediaImpl* impl, std::string& name, std::string & url, const std::string &defaultName);
+    std::string getSelectedUrl();
 
     void updateColumns();
 
@@ -141,6 +142,8 @@ private:
     void onCommitSelectedMediaVolume();
     void onClickSelectedMediaZoom();
     void onClickSelectedMediaUnzoom();
+    void onMenuAction(const LLSD& userdata);
+    bool onMenuVisible(const LLSD& userdata);
 
     LLUICtrl*           mNearbyMediaPanel;
     LLScrollListCtrl*       mMediaList;
@@ -158,8 +161,8 @@ private:
     LLUICtrl*           mUnzoomCtrl;
     LLSlider*           mVolumeSlider;
     LLButton*           mMuteBtn;
+    LLButton*           mMoreLessBtn;
 
-    bool                mAllMediaDisabled;
     bool                mDebugInfoVisible;
     bool                mParcelAudioAutoStart;
     std::string         mEmptyNameString;
@@ -171,6 +174,7 @@ private:
     LLRect              mLessRect;
     LLScrollListItem*   mParcelMediaItem;
     LLScrollListItem*   mParcelAudioItem;
+    LLToggleableMenu*   mContextMenu;
 };
 
 
diff --git a/indra/newview/llpanelobject.cpp b/indra/newview/llpanelobject.cpp
index 9267604098..0a3a2e753a 100644
--- a/indra/newview/llpanelobject.cpp
+++ b/indra/newview/llpanelobject.cpp
@@ -97,9 +97,9 @@ const F32 MAX_ATTACHMENT_DIST = 3.5f; // meters
 
 //static const std::string LEGACY_FULLBRIGHT_DESC =LLTrans::getString("Fullbright");
 
-BOOL    LLPanelObject::postBuild()
+bool    LLPanelObject::postBuild()
 {
-    setMouseOpaque(FALSE);
+    setMouseOpaque(false);
 
     //--------------------------------------------------------
     // Top
@@ -255,17 +255,17 @@ BOOL    LLPanelObject::postBuild()
         LLAggregatePermissions texture_perms;
         if (LLSelectMgr::getInstance()->selectGetAggregateTexturePermissions(texture_perms))
         {
-            BOOL can_copy =
+            bool can_copy =
                 texture_perms.getValue(PERM_COPY) == LLAggregatePermissions::AP_EMPTY ||
                 texture_perms.getValue(PERM_COPY) == LLAggregatePermissions::AP_ALL;
-            BOOL can_transfer =
+            bool can_transfer =
                 texture_perms.getValue(PERM_TRANSFER) == LLAggregatePermissions::AP_EMPTY ||
                 texture_perms.getValue(PERM_TRANSFER) == LLAggregatePermissions::AP_ALL;
             mCtrlSculptTexture->setCanApplyImmediately(can_copy && can_transfer);
         }
         else
         {
-            mCtrlSculptTexture->setCanApplyImmediately(FALSE);
+            mCtrlSculptTexture->setCanApplyImmediately(false);
         }
     }
 
@@ -280,21 +280,21 @@ BOOL    LLPanelObject::postBuild()
     // Start with everyone disabled
     clearCtrls();
 
-    return TRUE;
+    return true;
 }
 
 LLPanelObject::LLPanelObject()
 :   LLPanel(),
-    mIsPhysical(FALSE),
-    mIsTemporary(FALSE),
-    mIsPhantom(FALSE),
+    mIsPhysical(false),
+    mIsTemporary(false),
+    mIsPhantom(false),
     mSelectedType(MI_BOX),
     mSculptTextureRevert(LLUUID::null),
     mSculptTypeRevert(0),
     mHasClipboardPos(false),
     mHasClipboardSize(false),
     mHasClipboardRot(false),
-    mSizeChanged(FALSE)
+    mSizeChanged(false)
 {
     mCommitCallbackRegistrar.add("PanelObject.menuDoToSelected", boost::bind(&LLPanelObject::menuDoToSelected, this, _2));
     mEnableCallbackRegistrar.add("PanelObject.menuEnable", boost::bind(&LLPanelObject::menuEnableItem, this, _2));
@@ -352,7 +352,7 @@ void LLPanelObject::getState( )
     }
 
     S32 selected_count = LLSelectMgr::getInstance()->getSelection()->getObjectCount();
-    BOOL single_volume = (LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME ))
+    bool single_volume = (LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME ))
                          && (selected_count == 1);
 
     bool enable_move;
@@ -360,8 +360,8 @@ void LLPanelObject::getState( )
 
     LLSelectMgr::getInstance()->selectGetEditMoveLinksetPermissions(enable_move, enable_modify);
 
-    BOOL enable_scale = enable_modify;
-    BOOL enable_rotate = enable_move; // already accounts for a case of children, which needs permModify() as well
+    bool enable_scale = enable_modify;
+    bool enable_rotate = enable_move; // already accounts for a case of children, which needs permModify() as well
 
     LLVector3 vec;
     if (enable_move)
@@ -454,20 +454,20 @@ void LLPanelObject::getState( )
 
     // BUG? Check for all objects being editable?
     S32 roots_selected = LLSelectMgr::getInstance()->getSelection()->getRootObjectCount();
-    BOOL editable = root_objectp->permModify();
+    bool editable = root_objectp->permModify();
 
-    BOOL is_flexible = volobjp && volobjp->isFlexible();
-    BOOL is_permanent = root_objectp->flagObjectPermanent();
-    BOOL is_permanent_enforced = root_objectp->isPermanentEnforced();
-    BOOL is_character = root_objectp->flagCharacter();
+    bool is_flexible = volobjp && volobjp->isFlexible();
+    bool is_permanent = root_objectp->flagObjectPermanent();
+    bool is_permanent_enforced = root_objectp->isPermanentEnforced();
+    bool is_character = root_objectp->flagCharacter();
     llassert(!is_permanent || !is_character); // should never have a permanent object that is also a character
 
     // Lock checkbox - only modifiable if you own the object.
-    BOOL self_owned = (gAgent.getID() == owner_id);
+    bool self_owned = (gAgent.getID() == owner_id);
     mCheckLock->setEnabled( roots_selected > 0 && self_owned && !is_permanent_enforced);
 
     // More lock and debit checkbox - get the values
-    BOOL valid;
+    bool valid;
     U32 owner_mask_on;
     U32 owner_mask_off;
     valid = LLSelectMgr::getInstance()->selectGetPerm(PERM_OWNER, &owner_mask_on, &owner_mask_off);
@@ -477,20 +477,20 @@ void LLPanelObject::getState( )
         if(owner_mask_on & PERM_MOVE)
         {
             // owner can move, so not locked
-            mCheckLock->set(FALSE);
-            mCheckLock->setTentative(FALSE);
+            mCheckLock->set(false);
+            mCheckLock->setTentative(false);
         }
         else if(owner_mask_off & PERM_MOVE)
         {
             // owner can't move, so locked
-            mCheckLock->set(TRUE);
-            mCheckLock->setTentative(FALSE);
+            mCheckLock->set(true);
+            mCheckLock->setTentative(false);
         }
         else
         {
             // some locked, some not locked
-            mCheckLock->set(FALSE);
-            mCheckLock->setTentative(TRUE);
+            mCheckLock->set(false);
+            mCheckLock->setTentative(true);
         }
     }
 
@@ -510,7 +510,7 @@ void LLPanelObject::getState( )
     mCheckTemporary->setEnabled( roots_selected>0 && editable && !is_permanent);
 
     mIsPhantom = root_objectp->flagPhantom();
-    BOOL is_volume_detect = root_objectp->flagVolumeDetect();
+    bool is_volume_detect = root_objectp->flagVolumeDetect();
     llassert(!is_character || !mIsPhantom); // should never have a character that is also a phantom
     mCheckPhantom->set( mIsPhantom );
     mCheckPhantom->setEnabled( roots_selected>0 && editable && !is_flexible && !is_permanent_enforced && !is_character && !is_volume_detect);
@@ -519,10 +519,10 @@ void LLPanelObject::getState( )
 
     S32 selected_item   = MI_BOX;
     S32 selected_hole   = MI_HOLE_SAME;
-    BOOL enabled = FALSE;
-    BOOL hole_enabled = FALSE;
+    bool enabled = false;
+    bool hole_enabled = false;
     F32 scale_x=1.f, scale_y=1.f;
-    BOOL isMesh = FALSE;
+    bool isMesh = false;
 
     if( !objectp || !objectp->getVolume() || !editable || !single_volume)
     {
@@ -568,7 +568,7 @@ void LLPanelObject::getState( )
         scale_x = volume_params.getRatioX();
         scale_y = volume_params.getRatioY();
 
-        BOOL linear_path = (path == LL_PCODE_PATH_LINE) || (path == LL_PCODE_PATH_FLEXIBLE);
+        bool linear_path = (path == LL_PCODE_PATH_LINE) || (path == LL_PCODE_PATH_FLEXIBLE);
         if ( linear_path && profile == LL_PCODE_PROFILE_CIRCLE )
         {
             selected_item = MI_CYLINDER;
@@ -672,7 +672,7 @@ void LLPanelObject::getState( )
         else
         {
             mComboHoleType->setCurrentByIndex( MI_HOLE_SAME );
-            hole_enabled = FALSE;
+            hole_enabled = false;
         }
 
         // Cut interpretation varies based on base object type
@@ -802,38 +802,38 @@ void LLPanelObject::getState( )
 
     // Compute control visibility, label names, and twist range.
     // Start with defaults.
-    BOOL cut_visible                = TRUE;
-    BOOL hollow_visible             = TRUE;
-    BOOL top_size_x_visible         = TRUE;
-    BOOL top_size_y_visible         = TRUE;
-    BOOL top_shear_x_visible        = TRUE;
-    BOOL top_shear_y_visible        = TRUE;
-    BOOL twist_visible              = TRUE;
-    BOOL advanced_cut_visible       = FALSE;
-    BOOL taper_visible              = FALSE;
-    BOOL skew_visible               = FALSE;
-    BOOL radius_offset_visible      = FALSE;
-    BOOL revolutions_visible        = FALSE;
-    BOOL sculpt_texture_visible     = FALSE;
+    bool cut_visible                = true;
+    bool hollow_visible             = true;
+    bool top_size_x_visible         = true;
+    bool top_size_y_visible         = true;
+    bool top_shear_x_visible        = true;
+    bool top_shear_y_visible        = true;
+    bool twist_visible              = true;
+    bool advanced_cut_visible       = false;
+    bool taper_visible              = false;
+    bool skew_visible               = false;
+    bool radius_offset_visible      = false;
+    bool revolutions_visible        = false;
+    bool sculpt_texture_visible     = false;
     F32  twist_min                  = OBJECT_TWIST_LINEAR_MIN;
     F32  twist_max                  = OBJECT_TWIST_LINEAR_MAX;
     F32  twist_inc                  = OBJECT_TWIST_LINEAR_INC;
 
-    BOOL advanced_is_dimple = FALSE;
-    BOOL advanced_is_slice = FALSE;
-    BOOL size_is_hole = FALSE;
+    bool advanced_is_dimple = false;
+    bool advanced_is_slice = false;
+    bool size_is_hole = false;
 
     // Tune based on overall volume type
     switch (selected_item)
     {
     case MI_SPHERE:
-        top_size_x_visible      = FALSE;
-        top_size_y_visible      = FALSE;
-        top_shear_x_visible     = FALSE;
-        top_shear_y_visible     = FALSE;
-        //twist_visible         = FALSE;
-        advanced_cut_visible    = TRUE;
-        advanced_is_dimple      = TRUE;
+        top_size_x_visible      = false;
+        top_size_y_visible      = false;
+        top_shear_x_visible     = false;
+        top_shear_y_visible     = false;
+        //twist_visible         = false;
+        advanced_cut_visible    = true;
+        advanced_is_dimple      = true;
         twist_min               = OBJECT_TWIST_MIN;
         twist_max               = OBJECT_TWIST_MAX;
         twist_inc               = OBJECT_TWIST_INC;
@@ -842,14 +842,14 @@ void LLPanelObject::getState( )
     case MI_TORUS:
     case MI_TUBE:
     case MI_RING:
-        //top_size_x_visible        = FALSE;
-        //top_size_y_visible        = FALSE;
-        size_is_hole            = TRUE;
-        skew_visible            = TRUE;
-        advanced_cut_visible    = TRUE;
-        taper_visible           = TRUE;
-        radius_offset_visible   = TRUE;
-        revolutions_visible     = TRUE;
+        //top_size_x_visible        = false;
+        //top_size_y_visible        = false;
+        size_is_hole            = true;
+        skew_visible            = true;
+        advanced_cut_visible    = true;
+        taper_visible           = true;
+        radius_offset_visible   = true;
+        revolutions_visible     = true;
         twist_min               = OBJECT_TWIST_MIN;
         twist_max               = OBJECT_TWIST_MAX;
         twist_inc               = OBJECT_TWIST_INC;
@@ -857,35 +857,35 @@ void LLPanelObject::getState( )
         break;
 
     case MI_SCULPT:
-        cut_visible             = FALSE;
-        hollow_visible          = FALSE;
-        twist_visible           = FALSE;
-        top_size_x_visible      = FALSE;
-        top_size_y_visible      = FALSE;
-        top_shear_x_visible     = FALSE;
-        top_shear_y_visible     = FALSE;
-        skew_visible            = FALSE;
-        advanced_cut_visible    = FALSE;
-        taper_visible           = FALSE;
-        radius_offset_visible   = FALSE;
-        revolutions_visible     = FALSE;
-        sculpt_texture_visible  = TRUE;
+        cut_visible             = false;
+        hollow_visible          = false;
+        twist_visible           = false;
+        top_size_x_visible      = false;
+        top_size_y_visible      = false;
+        top_shear_x_visible     = false;
+        top_shear_y_visible     = false;
+        skew_visible            = false;
+        advanced_cut_visible    = false;
+        taper_visible           = false;
+        radius_offset_visible   = false;
+        revolutions_visible     = false;
+        sculpt_texture_visible  = true;
 
         break;
 
     case MI_BOX:
-        advanced_cut_visible    = TRUE;
-        advanced_is_slice       = TRUE;
+        advanced_cut_visible    = true;
+        advanced_is_slice       = true;
         break;
 
     case MI_CYLINDER:
-        advanced_cut_visible    = TRUE;
-        advanced_is_slice       = TRUE;
+        advanced_cut_visible    = true;
+        advanced_is_slice       = true;
         break;
 
     case MI_PRISM:
-        advanced_cut_visible    = TRUE;
-        advanced_is_slice       = TRUE;
+        advanced_cut_visible    = true;
+        advanced_is_slice       = true;
         break;
 
     default:
@@ -964,18 +964,18 @@ void LLPanelObject::getState( )
     mLabelSkew      ->setEnabled( enabled );
     mSpinSkew       ->setEnabled( enabled );
 
-    getChildView("scale_hole")->setVisible( FALSE);
-    getChildView("scale_taper")->setVisible( FALSE);
+    getChildView("scale_hole")->setVisible( false);
+    getChildView("scale_taper")->setVisible( false);
     if (top_size_x_visible || top_size_y_visible)
     {
         if (size_is_hole)
         {
-            getChildView("scale_hole")->setVisible( TRUE);
+            getChildView("scale_hole")->setVisible( true);
             getChildView("scale_hole")->setEnabled(enabled);
         }
         else
         {
-            getChildView("scale_taper")->setVisible( TRUE);
+            getChildView("scale_taper")->setVisible( true);
             getChildView("scale_taper")->setEnabled(enabled);
         }
     }
@@ -987,26 +987,26 @@ void LLPanelObject::getState( )
     mSpinShearX     ->setEnabled( enabled );
     mSpinShearY     ->setEnabled( enabled );
 
-    getChildView("advanced_cut")->setVisible( FALSE);
-    getChildView("advanced_dimple")->setVisible( FALSE);
-    getChildView("advanced_slice")->setVisible( FALSE);
+    getChildView("advanced_cut")->setVisible( false);
+    getChildView("advanced_dimple")->setVisible( false);
+    getChildView("advanced_slice")->setVisible( false);
 
     if (advanced_cut_visible)
     {
         if (advanced_is_dimple)
         {
-            getChildView("advanced_dimple")->setVisible( TRUE);
+            getChildView("advanced_dimple")->setVisible( true);
             getChildView("advanced_dimple")->setEnabled(enabled);
         }
 
         else if (advanced_is_slice)
         {
-            getChildView("advanced_slice")->setVisible( TRUE);
+            getChildView("advanced_slice")->setVisible( true);
             getChildView("advanced_slice")->setEnabled(enabled);
         }
         else
         {
-            getChildView("advanced_cut")->setVisible( TRUE);
+            getChildView("advanced_cut")->setVisible( true);
             getChildView("advanced_cut")->setEnabled(enabled);
         }
     }
@@ -1091,14 +1091,14 @@ void LLPanelObject::getState( )
 
             U8 sculpt_type = sculpt_params->getSculptType();
             U8 sculpt_stitching = sculpt_type & LL_SCULPT_TYPE_MASK;
-            BOOL sculpt_invert = sculpt_type & LL_SCULPT_FLAG_INVERT;
-            BOOL sculpt_mirror = sculpt_type & LL_SCULPT_FLAG_MIRROR;
+            bool sculpt_invert = sculpt_type & LL_SCULPT_FLAG_INVERT;
+            bool sculpt_mirror = sculpt_type & LL_SCULPT_FLAG_MIRROR;
             isMesh = (sculpt_stitching == LL_SCULPT_TYPE_MESH);
 
             LLTextureCtrl*  mTextureCtrl = getChild<LLTextureCtrl>("sculpt texture control");
             if(mTextureCtrl)
             {
-                mTextureCtrl->setTentative(FALSE);
+                mTextureCtrl->setTentative(false);
                 mTextureCtrl->setEnabled(editable && !isMesh);
                 if (editable)
                     mTextureCtrl->setImageAssetID(sculpt_params->getSculptTexture());
@@ -1138,7 +1138,7 @@ void LLPanelObject::getState( )
 
             if (mLabelSculptType)
             {
-                mLabelSculptType->setEnabled(TRUE);
+                mLabelSculptType->setEnabled(true);
             }
 
         }
@@ -1161,12 +1161,12 @@ void LLPanelObject::getState( )
 bool LLPanelObject::precommitValidate( const LLSD& data )
 {
     // TODO: Richard will fill this in later.
-    return TRUE; // FALSE means that validation failed and new value should not be commited.
+    return true; // false means that validation failed and new value should not be commited.
 }
 
 void LLPanelObject::sendIsPhysical()
 {
-    BOOL value = mCheckPhysics->get();
+    bool value = mCheckPhysics->get();
     if( mIsPhysical != value )
     {
         LLSelectMgr::getInstance()->selectionUpdatePhysics(value);
@@ -1182,7 +1182,7 @@ void LLPanelObject::sendIsPhysical()
 
 void LLPanelObject::sendIsTemporary()
 {
-    BOOL value = mCheckTemporary->get();
+    bool value = mCheckTemporary->get();
     if( mIsTemporary != value )
     {
         LLSelectMgr::getInstance()->selectionUpdateTemporary(value);
@@ -1199,7 +1199,7 @@ void LLPanelObject::sendIsTemporary()
 
 void LLPanelObject::sendIsPhantom()
 {
-    BOOL value = mCheckPhantom->get();
+    bool value = mCheckPhantom->get();
     if( mIsPhantom != value )
     {
         LLSelectMgr::getInstance()->selectionUpdatePhantom(value);
@@ -1245,7 +1245,7 @@ void LLPanelObject::onCommitParametric( LLUICtrl* ctrl, void* userdata )
 
     if (selected_type == MI_SCULPT)
     {
-        self->mObject->setParameterEntryInUse(LLNetworkData::PARAMS_SCULPT, TRUE, TRUE);
+        self->mObject->setParameterEntryInUse(LLNetworkData::PARAMS_SCULPT, true, true);
         LLSculptParams *sculpt_params = (LLSculptParams *)self->mObject->getParameterEntry(LLNetworkData::PARAMS_SCULPT);
         if (sculpt_params)
             volume_params.setSculptID(sculpt_params->getSculptTexture(), sculpt_params->getSculptType());
@@ -1254,7 +1254,7 @@ void LLPanelObject::onCommitParametric( LLUICtrl* ctrl, void* userdata )
     {
         LLSculptParams *sculpt_params = (LLSculptParams *)self->mObject->getParameterEntry(LLNetworkData::PARAMS_SCULPT);
         if (sculpt_params)
-            self->mObject->setParameterEntryInUse(LLNetworkData::PARAMS_SCULPT, FALSE, TRUE);
+            self->mObject->setParameterEntryInUse(LLNetworkData::PARAMS_SCULPT, false, true);
     }
 
     // Update the volume, if necessary.
@@ -1559,7 +1559,7 @@ void LLPanelObject::getVolumeParams(LLVolumeParams& volume_params)
 }
 
 // BUG: Make work with multiple objects
-void LLPanelObject::sendRotation(BOOL btn_down)
+void LLPanelObject::sendRotation(bool btn_down)
 {
     if (mObject.isNull()) return;
 
@@ -1615,7 +1615,7 @@ void LLPanelObject::sendRotation(BOOL btn_down)
 
 
 // BUG: Make work with multiple objects
-void LLPanelObject::sendScale(BOOL btn_down)
+void LLPanelObject::sendScale(bool btn_down)
 {
     if (mObject.isNull()) return;
 
@@ -1629,20 +1629,20 @@ void LLPanelObject::sendScale(BOOL btn_down)
 
         // check to see if we aren't scaling the textures
         // (in which case the tex coord's need to be recomputed)
-        BOOL dont_stretch_textures = !LLManipScale::getStretchTextures();
+        bool dont_stretch_textures = !LLManipScale::getStretchTextures();
         if (dont_stretch_textures)
         {
             LLSelectMgr::getInstance()->saveSelectedObjectTransform(SELECT_ACTION_TYPE_SCALE);
         }
 
-        mObject->setScale(newscale, TRUE);
+        mObject->setScale(newscale, true);
 
         if(!btn_down)
         {
             LLSelectMgr::getInstance()->sendMultipleUpdate(UPD_SCALE | UPD_POSITION);
         }
 
-        LLSelectMgr::getInstance()->adjustTexturesByScale(TRUE, !dont_stretch_textures);
+        LLSelectMgr::getInstance()->adjustTexturesByScale(true, !dont_stretch_textures);
 //      LL_INFOS() << "scale sent" << LL_ENDL;
     }
     else
@@ -1652,7 +1652,7 @@ void LLPanelObject::sendScale(BOOL btn_down)
 }
 
 
-void LLPanelObject::sendPosition(BOOL btn_down)
+void LLPanelObject::sendPosition(bool btn_down)
 {
     if (mObject.isNull()) return;
 
@@ -1736,7 +1736,7 @@ void LLPanelObject::sendPosition(BOOL btn_down)
             if (mObject->isRootEdit())
             {
                 // only offset by parent's translation
-                mObject->resetChildrenPosition(LLVector3(-delta), TRUE, TRUE) ;
+                mObject->resetChildrenPosition(LLVector3(-delta), true, true) ;
             }
 
             if(!btn_down)
@@ -1766,32 +1766,41 @@ void LLPanelObject::sendSculpt()
     LLUUID sculpt_id = LLUUID::null;
 
     if (mCtrlSculptTexture)
+    {
         sculpt_id = mCtrlSculptTexture->getImageAssetID();
+    }
 
     U8 sculpt_type = 0;
 
     if (mCtrlSculptType)
+    {
         sculpt_type |= mCtrlSculptType->getValue().asInteger();
+    }
 
     bool enabled = sculpt_type != LL_SCULPT_TYPE_MESH;
 
     if (mCtrlSculptMirror)
     {
-        mCtrlSculptMirror->setEnabled(enabled ? TRUE : FALSE);
+        mCtrlSculptMirror->setEnabled(enabled);
     }
+
     if (mCtrlSculptInvert)
     {
-        mCtrlSculptInvert->setEnabled(enabled ? TRUE : FALSE);
+        mCtrlSculptInvert->setEnabled(enabled);
     }
 
     if ((mCtrlSculptMirror) && (mCtrlSculptMirror->get()))
+    {
         sculpt_type |= LL_SCULPT_FLAG_MIRROR;
+    }
 
     if ((mCtrlSculptInvert) && (mCtrlSculptInvert->get()))
+    {
         sculpt_type |= LL_SCULPT_FLAG_INVERT;
+    }
 
     sculpt_params.setSculptTexture(sculpt_id, sculpt_type);
-    mObject->setParameterEntry(LLNetworkData::PARAMS_SCULPT, sculpt_params, TRUE);
+    mObject->setParameterEntry(LLNetworkData::PARAMS_SCULPT, sculpt_params, true);
 }
 
 void LLPanelObject::refresh()
@@ -1890,34 +1899,34 @@ void LLPanelObject::clearCtrls()
 {
     LLPanel::clearCtrls();
 
-    mCheckLock      ->set(FALSE);
-    mCheckLock      ->setEnabled( FALSE );
-    mCheckPhysics   ->set(FALSE);
-    mCheckPhysics   ->setEnabled( FALSE );
-    mCheckTemporary ->set(FALSE);
-    mCheckTemporary ->setEnabled( FALSE );
-    mCheckPhantom   ->set(FALSE);
-    mCheckPhantom   ->setEnabled( FALSE );
+    mCheckLock      ->set(false);
+    mCheckLock      ->setEnabled( false );
+    mCheckPhysics   ->set(false);
+    mCheckPhysics   ->setEnabled( false );
+    mCheckTemporary ->set(false);
+    mCheckTemporary ->setEnabled( false );
+    mCheckPhantom   ->set(false);
+    mCheckPhantom   ->setEnabled( false );
 
     // Disable text labels
-    mLabelPosition  ->setEnabled( FALSE );
-    mLabelSize      ->setEnabled( FALSE );
-    mLabelRotation  ->setEnabled( FALSE );
-    mLabelCut       ->setEnabled( FALSE );
-    mLabelHollow    ->setEnabled( FALSE );
-    mLabelHoleType  ->setEnabled( FALSE );
-    mLabelTwist     ->setEnabled( FALSE );
-    mLabelSkew      ->setEnabled( FALSE );
-    mLabelShear     ->setEnabled( FALSE );
-    mLabelTaper     ->setEnabled( FALSE );
-    mLabelRadiusOffset->setEnabled( FALSE );
-    mLabelRevolutions->setEnabled( FALSE );
-
-    getChildView("scale_hole")->setEnabled(FALSE);
-    getChildView("scale_taper")->setEnabled(FALSE);
-    getChildView("advanced_cut")->setEnabled(FALSE);
-    getChildView("advanced_dimple")->setEnabled(FALSE);
-    getChildView("advanced_slice")->setVisible( FALSE);
+    mLabelPosition  ->setEnabled( false );
+    mLabelSize      ->setEnabled( false );
+    mLabelRotation  ->setEnabled( false );
+    mLabelCut       ->setEnabled( false );
+    mLabelHollow    ->setEnabled( false );
+    mLabelHoleType  ->setEnabled( false );
+    mLabelTwist     ->setEnabled( false );
+    mLabelSkew      ->setEnabled( false );
+    mLabelShear     ->setEnabled( false );
+    mLabelTaper     ->setEnabled( false );
+    mLabelRadiusOffset->setEnabled( false );
+    mLabelRevolutions->setEnabled( false );
+
+    getChildView("scale_hole")->setEnabled(false);
+    getChildView("scale_taper")->setEnabled(false);
+    getChildView("advanced_cut")->setEnabled(false);
+    getChildView("advanced_dimple")->setEnabled(false);
+    getChildView("advanced_slice")->setVisible( false);
 }
 
 //
@@ -1932,7 +1941,7 @@ void LLPanelObject::onCommitLock(LLUICtrl *ctrl, void *data)
 
     if(self->mRootObject.isNull()) return;
 
-    BOOL new_state = self->mCheckLock->get();
+    bool new_state = self->mCheckLock->get();
 
     LLSelectMgr::getInstance()->selectionSetObjectPermissions(PERM_OWNER, !new_state, PERM_MOVE | PERM_MODIFY);
 }
@@ -1941,7 +1950,7 @@ void LLPanelObject::onCommitLock(LLUICtrl *ctrl, void *data)
 void LLPanelObject::onCommitPosition( LLUICtrl* ctrl, void* userdata )
 {
     LLPanelObject* self = (LLPanelObject*) userdata;
-    BOOL btn_down = ((LLSpinCtrl*)ctrl)->isMouseHeldDown() ;
+    bool btn_down = ((LLSpinCtrl*)ctrl)->isMouseHeldDown() ;
     self->sendPosition(btn_down);
 }
 
@@ -1949,7 +1958,7 @@ void LLPanelObject::onCommitPosition( LLUICtrl* ctrl, void* userdata )
 void LLPanelObject::onCommitScale( LLUICtrl* ctrl, void* userdata )
 {
     LLPanelObject* self = (LLPanelObject*) userdata;
-    BOOL btn_down = ((LLSpinCtrl*)ctrl)->isMouseHeldDown() ;
+    bool btn_down = ((LLSpinCtrl*)ctrl)->isMouseHeldDown() ;
     self->sendScale(btn_down);
 }
 
@@ -1957,7 +1966,7 @@ void LLPanelObject::onCommitScale( LLUICtrl* ctrl, void* userdata )
 void LLPanelObject::onCommitRotation( LLUICtrl* ctrl, void* userdata )
 {
     LLPanelObject* self = (LLPanelObject*) userdata;
-    BOOL btn_down = ((LLSpinCtrl*)ctrl)->isMouseHeldDown() ;
+    bool btn_down = ((LLSpinCtrl*)ctrl)->isMouseHeldDown() ;
     self->sendRotation(btn_down);
 }
 
@@ -2000,7 +2009,7 @@ void LLPanelObject::onCommitSculpt( const LLSD& data )
     sendSculpt();
 }
 
-BOOL LLPanelObject::onDropSculpt(LLInventoryItem* item)
+bool LLPanelObject::onDropSculpt(LLInventoryItem* item)
 {
     LLTextureCtrl* mTextureCtrl = getChild<LLTextureCtrl>("sculpt texture control");
 
@@ -2012,7 +2021,7 @@ BOOL LLPanelObject::onDropSculpt(LLInventoryItem* item)
         mSculptTextureRevert = asset;
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -2099,7 +2108,7 @@ bool LLPanelObject::menuEnableItem(const LLSD& userdata)
     if (command == "psr_paste")
     {
         S32 selected_count = LLSelectMgr::getInstance()->getSelection()->getObjectCount();
-        BOOL single_volume = (LLSelectMgr::getInstance()->selectionAllPCode(LL_PCODE_VOLUME))
+        bool single_volume = (LLSelectMgr::getInstance()->selectionAllPCode(LL_PCODE_VOLUME))
             && (selected_count == 1);
 
         if (!single_volume)
@@ -2135,7 +2144,7 @@ bool LLPanelObject::menuEnableItem(const LLSD& userdata)
     else if (command == "psr_copy")
     {
         S32 selected_count = LLSelectMgr::getInstance()->getSelection()->getObjectCount();
-        BOOL single_volume = (LLSelectMgr::getInstance()->selectionAllPCode(LL_PCODE_VOLUME))
+        bool single_volume = (LLSelectMgr::getInstance()->selectionAllPCode(LL_PCODE_VOLUME))
             && (selected_count == 1);
 
         if (!single_volume)
@@ -2210,7 +2219,7 @@ void LLPanelObject::onPastePos()
     mCtrlPosY->set( mClipboardPos.mV[VY] );
     mCtrlPosZ->set( mClipboardPos.mV[VZ] );
 
-    sendPosition(FALSE);
+    sendPosition(false);
 }
 
 void LLPanelObject::onPasteSize()
@@ -2225,7 +2234,7 @@ void LLPanelObject::onPasteSize()
     mCtrlScaleY->set(mClipboardSize.mV[VY]);
     mCtrlScaleZ->set(mClipboardSize.mV[VZ]);
 
-    sendScale(FALSE);
+    sendScale(false);
 }
 
 void LLPanelObject::onPasteRot()
@@ -2236,7 +2245,7 @@ void LLPanelObject::onPasteRot()
     mCtrlRotY->set(mClipboardRot.mV[VY]);
     mCtrlRotZ->set(mClipboardRot.mV[VZ]);
 
-    sendRotation(FALSE);
+    sendRotation(false);
 }
 
 void LLPanelObject::onCopyParams()
@@ -2289,14 +2298,14 @@ void LLPanelObject::onPasteParams()
         LLUUID sculpt_id = mClipboardParams["sculpt"]["id"].asUUID();
         U8 sculpt_type = (U8)mClipboardParams["sculpt"]["type"].asInteger();
         sculpt_params.setSculptTexture(sculpt_id, sculpt_type);
-        objectp->setParameterEntry(LLNetworkData::PARAMS_SCULPT, sculpt_params, TRUE);
+        objectp->setParameterEntry(LLNetworkData::PARAMS_SCULPT, sculpt_params, true);
     }
     else
     {
         LLSculptParams *sculpt_params = (LLSculptParams *)objectp->getParameterEntry(LLNetworkData::PARAMS_SCULPT);
         if (sculpt_params)
         {
-            objectp->setParameterEntryInUse(LLNetworkData::PARAMS_SCULPT, FALSE, TRUE);
+            objectp->setParameterEntryInUse(LLNetworkData::PARAMS_SCULPT, false, true);
         }
     }
 
diff --git a/indra/newview/llpanelobject.h b/indra/newview/llpanelobject.h
index 3754dd3040..bbc069b96f 100644
--- a/indra/newview/llpanelobject.h
+++ b/indra/newview/llpanelobject.h
@@ -51,7 +51,7 @@ public:
     LLPanelObject();
     virtual ~LLPanelObject();
 
-    virtual BOOL    postBuild();
+    virtual bool    postBuild();
     virtual void    draw();
     virtual void    clearCtrls();
 
@@ -81,7 +81,7 @@ public:
     void            onCommitSculpt(const LLSD& data);
     void            onCancelSculpt(const LLSD& data);
     void            onSelectSculpt(const LLSD& data);
-    BOOL            onDropSculpt(LLInventoryItem* item);
+    bool            onDropSculpt(LLInventoryItem* item);
     static void     onCommitSculptType(    LLUICtrl *ctrl, void* userdata);
 
     void            menuDoToSelected(const LLSD& userdata);
@@ -90,9 +90,9 @@ public:
 protected:
     void            getState();
 
-    void            sendRotation(BOOL btn_down);
-    void            sendScale(BOOL btn_down);
-    void            sendPosition(BOOL btn_down);
+    void            sendRotation(bool btn_down);
+    void            sendScale(bool btn_down);
+    void            sendPosition(bool btn_down);
     void            sendIsPhysical();
     void            sendIsTemporary();
     void            sendIsPhantom();
@@ -155,7 +155,7 @@ protected:
     LLSpinCtrl*     mCtrlScaleX;
     LLSpinCtrl*     mCtrlScaleY;
     LLSpinCtrl*     mCtrlScaleZ;
-    BOOL            mSizeChanged;
+    bool            mSizeChanged;
 
     LLMenuButton*   mMenuClipboardRot;
     LLTextBox*      mLabelRotation;
@@ -175,9 +175,9 @@ protected:
     LLCheckBoxCtrl  *mCtrlSculptInvert;
 
     LLVector3       mCurEulerDegrees;       // to avoid sending rotation when not changed
-    BOOL            mIsPhysical;            // to avoid sending "physical" when not changed
-    BOOL            mIsTemporary;           // to avoid sending "temporary" when not changed
-    BOOL            mIsPhantom;             // to avoid sending "phantom" when not changed
+    bool            mIsPhysical;            // to avoid sending "physical" when not changed
+    bool            mIsTemporary;           // to avoid sending "temporary" when not changed
+    bool            mIsPhantom;             // to avoid sending "phantom" when not changed
     S32             mSelectedType;          // So we know what selected type we last were
 
     LLUUID          mSculptTextureRevert;   // so we can revert the sculpt texture on cancel
diff --git a/indra/newview/llpanelobjectinventory.cpp b/indra/newview/llpanelobjectinventory.cpp
index 141a1515d5..d33ccc0216 100644
--- a/indra/newview/llpanelobjectinventory.cpp
+++ b/indra/newview/llpanelobjectinventory.cpp
@@ -123,27 +123,27 @@ public:
 
     virtual LLUIImagePtr getIcon() const;
     virtual void openItem();
-    virtual BOOL canOpenItem() const { return FALSE; }
+    virtual bool canOpenItem() const { return false; }
     virtual void closeItem() {}
     virtual void selectItem() {}
     virtual void navigateToFolder(bool new_window = false, bool change_mode = false) {}
-    virtual BOOL isItemRenameable() const;
-    virtual BOOL renameItem(const std::string& new_name);
-    virtual BOOL isItemMovable() const;
-    virtual BOOL isItemRemovable(bool check_worn = true) const;
-    virtual BOOL removeItem();
+    virtual bool isItemRenameable() const;
+    virtual bool renameItem(const std::string& new_name);
+    virtual bool isItemMovable() const;
+    virtual bool isItemRemovable(bool check_worn = true) const;
+    virtual bool removeItem();
     virtual void removeBatch(std::vector<LLFolderViewModelItem*>& batch);
     virtual void move(LLFolderViewModelItem* parent_listener);
     virtual bool isItemCopyable(bool can_copy_as_link = true) const;
-    virtual BOOL copyToClipboard() const;
-    virtual BOOL cutToClipboard();
-    virtual BOOL isClipboardPasteable() const;
+    virtual bool copyToClipboard() const;
+    virtual bool cutToClipboard();
+    virtual bool isClipboardPasteable() const;
     virtual void pasteFromClipboard();
     virtual void pasteLinkFromClipboard();
     virtual void buildContextMenu(LLMenuGL& menu, U32 flags);
     virtual void performAction(LLInventoryModel* model, std::string action);
-    virtual BOOL isUpToDate() const { return TRUE; }
-    virtual bool hasChildren() const { return FALSE; }
+    virtual bool isUpToDate() const { return true; }
+    virtual bool hasChildren() const { return false; }
     virtual LLInventoryType::EType getInventoryType() const { return LLInventoryType::IT_NONE; }
     virtual LLWearableType::EType getWearableType() const { return LLWearableType::WT_NONE; }
     virtual LLSettingsType::type_e getSettingsType() const { return LLSettingsType::ST_NONE; }
@@ -153,8 +153,8 @@ public:
 
     // LLDragAndDropBridge functionality
     virtual LLToolDragAndDrop::ESource getDragSource() const { return LLToolDragAndDrop::SOURCE_WORLD; }
-    virtual BOOL startDrag(EDragAndDropType* type, LLUUID* id) const;
-    virtual BOOL dragOrDrop(MASK mask, BOOL drop,
+    virtual bool startDrag(EDragAndDropType* type, LLUUID* id) const;
+    virtual bool dragOrDrop(MASK mask, bool drop,
                             EDragAndDropType cargo_type,
                             void* cargo_data,
                             std::string& tooltip_msg);
@@ -236,9 +236,9 @@ const std::string& LLTaskInvFVBridge::getDisplayName() const
         }
 
         const LLPermissions& perm(item->getPermissions());
-        BOOL copy = gAgent.allowOperation(PERM_COPY, perm, GP_OBJECT_MANIPULATE);
-        BOOL mod  = gAgent.allowOperation(PERM_MODIFY, perm, GP_OBJECT_MANIPULATE);
-        BOOL xfer = gAgent.allowOperation(PERM_TRANSFER, perm, GP_OBJECT_MANIPULATE);
+        bool copy = gAgent.allowOperation(PERM_COPY, perm, GP_OBJECT_MANIPULATE);
+        bool mod  = gAgent.allowOperation(PERM_MODIFY, perm, GP_OBJECT_MANIPULATE);
+        bool xfer = gAgent.allowOperation(PERM_TRANSFER, perm, GP_OBJECT_MANIPULATE);
 
         if(!copy)
         {
@@ -277,7 +277,7 @@ void LLTaskInvFVBridge::setCreationDate(time_t creation_date_utc)
 
 LLUIImagePtr LLTaskInvFVBridge::getIcon() const
 {
-    const BOOL item_is_multi = (mFlags & LLInventoryItemFlags::II_FLAGS_OBJECT_HAS_MULTIPLE_ITEMS);
+    const bool item_is_multi = (mFlags & LLInventoryItemFlags::II_FLAGS_OBJECT_HAS_MULTIPLE_ITEMS);
 
     return LLInventoryIcon::getIcon(mAssetType, mInventoryType, 0, item_is_multi );
 }
@@ -288,9 +288,9 @@ void LLTaskInvFVBridge::openItem()
     LL_DEBUGS() << "LLTaskInvFVBridge::openItem()" << LL_ENDL;
 }
 
-BOOL LLTaskInvFVBridge::isItemRenameable() const
+bool LLTaskInvFVBridge::isItemRenameable() const
 {
-    if(gAgent.isGodlike()) return TRUE;
+    if(gAgent.isGodlike()) return true;
     LLViewerObject* object = gObjectList.findObject(mPanel->getTaskUUID());
     if(object)
     {
@@ -298,13 +298,13 @@ BOOL LLTaskInvFVBridge::isItemRenameable() const
         if(item && gAgent.allowOperation(PERM_MODIFY, item->getPermissions(),
                                          GP_OBJECT_MANIPULATE, GOD_LIKE))
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLTaskInvFVBridge::renameItem(const std::string& new_name)
+bool LLTaskInvFVBridge::renameItem(const std::string& new_name)
 {
     LLViewerObject* object = gObjectList.findObject(mPanel->getTaskUUID());
     if(object)
@@ -322,29 +322,29 @@ BOOL LLTaskInvFVBridge::renameItem(const std::string& new_name)
                 false);
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLTaskInvFVBridge::isItemMovable() const
+bool LLTaskInvFVBridge::isItemMovable() const
 {
     //LLViewerObject* object = gObjectList.findObject(mPanel->getTaskUUID());
     //if(object && (object->permModify() || gAgent.isGodlike()))
     //{
-    //  return TRUE;
+    //  return true;
     //}
-    //return FALSE;
-    return TRUE;
+    //return false;
+    return true;
 }
 
-BOOL LLTaskInvFVBridge::isItemRemovable(bool check_worn) const
+bool LLTaskInvFVBridge::isItemRemovable(bool check_worn) const
 {
     const LLViewerObject* object = gObjectList.findObject(mPanel->getTaskUUID());
     if(object
        && (object->permModify() || object->permYouOwner()))
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 bool remove_task_inventory_callback(const LLSD& notification, const LLSD& response, LLPanelObjectInventory* panel)
@@ -372,7 +372,7 @@ bool remove_task_inventory_callback(const LLSD& notification, const LLSD& respon
 // ! REFACTOR ! two_uuids_list_t is also defined in llinventorybridge.h, but differently.
 typedef std::pair<LLUUID, std::list<LLUUID> > panel_two_uuids_list_t;
 typedef std::pair<LLPanelObjectInventory*, panel_two_uuids_list_t> remove_data_t;
-BOOL LLTaskInvFVBridge::removeItem()
+bool LLTaskInvFVBridge::removeItem()
 {
     if(isItemRemovable() && mPanel)
     {
@@ -383,7 +383,7 @@ BOOL LLTaskInvFVBridge::removeItem()
             {
                 // just do it.
                 object->removeInventory(mUUID);
-                return TRUE;
+                return true;
             }
             else
             {
@@ -391,11 +391,11 @@ BOOL LLTaskInvFVBridge::removeItem()
                 payload["task_id"] = mPanel->getTaskUUID();
                 payload["inventory_ids"].append(mUUID);
                 LLNotificationsUtil::add("RemoveItemWarn", LLSD(), payload, boost::bind(&remove_task_inventory_callback, _1, _2, mPanel));
-                return FALSE;
+                return false;
             }
         }
     }
-    return FALSE;
+    return false;
 }
 
 void   LLTaskInvFVBridge::removeBatch(std::vector<LLFolderViewModelItem*>& batch)
@@ -450,19 +450,19 @@ bool LLTaskInvFVBridge::isItemCopyable(bool can_link) const
                                 GP_OBJECT_MANIPULATE);
 }
 
-BOOL LLTaskInvFVBridge::copyToClipboard() const
+bool LLTaskInvFVBridge::copyToClipboard() const
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLTaskInvFVBridge::cutToClipboard()
+bool LLTaskInvFVBridge::cutToClipboard()
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLTaskInvFVBridge::isClipboardPasteable() const
+bool LLTaskInvFVBridge::isClipboardPasteable() const
 {
-    return FALSE;
+    return false;
 }
 
 void LLTaskInvFVBridge::pasteFromClipboard()
@@ -473,7 +473,7 @@ void LLTaskInvFVBridge::pasteLinkFromClipboard()
 {
 }
 
-BOOL LLTaskInvFVBridge::startDrag(EDragAndDropType* type, LLUUID* id) const
+bool LLTaskInvFVBridge::startDrag(EDragAndDropType* type, LLUUID* id) const
 {
     //LL_INFOS() << "LLTaskInvFVBridge::startDrag()" << LL_ENDL;
     if(mPanel)
@@ -493,7 +493,7 @@ BOOL LLTaskInvFVBridge::startDrag(EDragAndDropType* type, LLUUID* id) const
                     // due to a race condition and possible exploit where
                     // attached objects do not update their inventory items
                     // when their contents are manipulated
-                    return FALSE;
+                    return false;
                 }
                 if((can_copy && perm.allowTransferTo(gAgent.getID()))
                    || object->permYouOwner())
@@ -503,21 +503,21 @@ BOOL LLTaskInvFVBridge::startDrag(EDragAndDropType* type, LLUUID* id) const
                     *type = LLViewerAssetType::lookupDragAndDropType(inv->getType());
 
                     *id = inv->getUUID();
-                    return TRUE;
+                    return true;
                 }
             }
         }
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLTaskInvFVBridge::dragOrDrop(MASK mask, BOOL drop,
+bool LLTaskInvFVBridge::dragOrDrop(MASK mask, bool drop,
                                    EDragAndDropType cargo_type,
                                    void* cargo_data,
                                    std::string& tooltip_msg)
 {
     //LL_INFOS() << "LLTaskInvFVBridge::dragOrDrop()" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
 // virtual
@@ -585,18 +585,18 @@ public:
 
     virtual LLUIImagePtr getIcon() const;
     virtual const std::string& getDisplayName() const;
-    virtual BOOL isItemRenameable() const;
-    // virtual BOOL isItemCopyable() const { return FALSE; }
-    virtual BOOL renameItem(const std::string& new_name);
-    virtual BOOL isItemRemovable(bool check_worn = true) const;
+    virtual bool isItemRenameable() const;
+    // virtual bool isItemCopyable() const { return false; }
+    virtual bool renameItem(const std::string& new_name);
+    virtual bool isItemRemovable(bool check_worn = true) const;
     virtual void buildContextMenu(LLMenuGL& menu, U32 flags);
     virtual bool hasChildren() const;
-    virtual BOOL startDrag(EDragAndDropType* type, LLUUID* id) const;
-    virtual BOOL dragOrDrop(MASK mask, BOOL drop,
+    virtual bool startDrag(EDragAndDropType* type, LLUUID* id) const;
+    virtual bool dragOrDrop(MASK mask, bool drop,
                             EDragAndDropType cargo_type,
                             void* cargo_data,
                             std::string& tooltip_msg);
-    virtual BOOL canOpenItem() const { return TRUE; }
+    virtual bool canOpenItem() const { return true; }
     virtual void openItem();
     virtual EInventorySortGroup getSortGroup() const { return SG_NORMAL_FOLDER; }
 };
@@ -638,19 +638,19 @@ const std::string& LLTaskCategoryBridge::getDisplayName() const
     return mDisplayName;
 }
 
-BOOL LLTaskCategoryBridge::isItemRenameable() const
+bool LLTaskCategoryBridge::isItemRenameable() const
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLTaskCategoryBridge::renameItem(const std::string& new_name)
+bool LLTaskCategoryBridge::renameItem(const std::string& new_name)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLTaskCategoryBridge::isItemRemovable(bool check_worn) const
+bool LLTaskCategoryBridge::isItemRemovable(bool check_worn) const
 {
-    return FALSE;
+    return false;
 }
 
 void LLTaskCategoryBridge::buildContextMenu(LLMenuGL& menu, U32 flags)
@@ -662,16 +662,16 @@ void LLTaskCategoryBridge::buildContextMenu(LLMenuGL& menu, U32 flags)
 
 bool LLTaskCategoryBridge::hasChildren() const
 {
-    // return TRUE if we have or do know know if we have children.
-    // *FIX: For now, return FALSE - we will know for sure soon enough.
-    return FALSE;
+    // return true if we have or do know know if we have children.
+    // *FIX: For now, return false - we will know for sure soon enough.
+    return false;
 }
 
 void LLTaskCategoryBridge::openItem()
 {
 }
 
-BOOL LLTaskCategoryBridge::startDrag(EDragAndDropType* type, LLUUID* id) const
+bool LLTaskCategoryBridge::startDrag(EDragAndDropType* type, LLUUID* id) const
 {
     //LL_INFOS() << "LLTaskInvFVBridge::startDrag()" << LL_ENDL;
     if(mPanel && mUUID.notNull())
@@ -680,24 +680,24 @@ BOOL LLTaskCategoryBridge::startDrag(EDragAndDropType* type, LLUUID* id) const
         if(object)
         {
             const LLInventoryObject* cat = object->getInventoryObject(mUUID);
-            if ( (cat) && (move_inv_category_world_to_agent(mUUID, LLUUID::null, FALSE)) )
+            if ( (cat) && (move_inv_category_world_to_agent(mUUID, LLUUID::null, false)) )
             {
                 *type = LLViewerAssetType::lookupDragAndDropType(cat->getType());
                 *id = mUUID;
-                return TRUE;
+                return true;
             }
         }
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLTaskCategoryBridge::dragOrDrop(MASK mask, BOOL drop,
+bool LLTaskCategoryBridge::dragOrDrop(MASK mask, bool drop,
                                       EDragAndDropType cargo_type,
                                       void* cargo_data,
                                       std::string& tooltip_msg)
 {
     //LL_INFOS() << "LLTaskCategoryBridge::dragOrDrop()" << LL_ENDL;
-    BOOL accept = FALSE;
+    bool accept = false;
     LLViewerObject* object = gObjectList.findObject(mPanel->getTaskUUID());
     if(object)
     {
@@ -739,14 +739,14 @@ BOOL LLTaskCategoryBridge::dragOrDrop(MASK mask, BOOL drop,
                && (LLToolDragAndDrop::SOURCE_WORLD != LLToolDragAndDrop::getInstance()->getSource())
                && (LLToolDragAndDrop::SOURCE_NOTECARD != LLToolDragAndDrop::getInstance()->getSource()))
             {
-                accept = TRUE;
+                accept = true;
             }
             if(accept && drop)
             {
                 LLViewerInventoryItem* item = (LLViewerInventoryItem*)cargo_data;
                 // rez in the script active by default, rez in
                 // inactive if the control key is being held down.
-                BOOL active = ((mask & MASK_CONTROL) == 0);
+                bool active = ((mask & MASK_CONTROL) == 0);
                 LLToolDragAndDrop::dropScript(object, item, active,
                                               LLToolDragAndDrop::getInstance()->getSource(),
                                               LLToolDragAndDrop::getInstance()->getSourceID());
@@ -771,7 +771,7 @@ public:
                         const std::string& name) :
         LLTaskInvFVBridge(panel, uuid, name) {}
 
-    virtual BOOL canOpenItem() const { return TRUE; }
+    virtual bool canOpenItem() const { return true; }
     virtual void openItem();
 };
 
@@ -803,7 +803,7 @@ public:
                       const std::string& name) :
         LLTaskInvFVBridge(panel, uuid, name) {}
 
-    virtual BOOL canOpenItem() const { return TRUE; }
+    virtual bool canOpenItem() const { return true; }
     virtual void openItem();
     virtual void performAction(LLInventoryModel* model, std::string action);
     virtual void buildContextMenu(LLMenuGL& menu, U32 flags);
@@ -905,18 +905,18 @@ public:
                             const std::string& name) :
         LLTaskInvFVBridge(panel, uuid, name) {}
 
-    virtual BOOL isItemRenameable() const;
-    virtual BOOL renameItem(const std::string& new_name);
+    virtual bool isItemRenameable() const;
+    virtual bool renameItem(const std::string& new_name);
 };
 
-BOOL LLTaskCallingCardBridge::isItemRenameable() const
+bool LLTaskCallingCardBridge::isItemRenameable() const
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLTaskCallingCardBridge::renameItem(const std::string& new_name)
+bool LLTaskCallingCardBridge::renameItem(const std::string& new_name)
 {
-    return FALSE;
+    return false;
 }
 
 
@@ -932,7 +932,7 @@ public:
                        const std::string& name) :
         LLTaskInvFVBridge(panel, uuid, name) {}
 
-    //static BOOL enableIfCopyable( void* userdata );
+    //static bool enableIfCopyable( void* userdata );
 };
 
 class LLTaskLSLBridge : public LLTaskScriptBridge
@@ -943,9 +943,9 @@ public:
                     const std::string& name) :
         LLTaskScriptBridge(panel, uuid, name) {}
 
-    virtual BOOL canOpenItem() const { return TRUE; }
+    virtual bool canOpenItem() const { return true; }
     virtual void openItem();
-    virtual BOOL removeItem();
+    virtual bool removeItem();
     //virtual void buildContextMenu(LLMenuGL& menu);
 
     //static void copyToInventory(void* userdata);
@@ -968,7 +968,7 @@ void LLTaskLSLBridge::openItem()
         LLLiveLSLEditor* preview = LLFloaterReg::showTypedInstance<LLLiveLSLEditor>("preview_scriptedit", floater_key, TAKE_FOCUS_YES);
         if (preview)
         {
-            LLSelectNode *node = LLSelectMgr::getInstance()->getSelection()->getFirstRootNode(NULL, TRUE);
+            LLSelectNode *node = LLSelectMgr::getInstance()->getSelection()->getFirstRootNode(NULL, true);
             if (node && node->mValid)
             {
                 preview->setObjectName(node->mName);
@@ -982,7 +982,7 @@ void LLTaskLSLBridge::openItem()
     }
 }
 
-BOOL LLTaskLSLBridge::removeItem()
+bool LLTaskLSLBridge::removeItem()
 {
     LLFloaterReg::hideInstance("preview_scriptedit", LLSD(mUUID));
     return LLTaskInvFVBridge::removeItem();
@@ -1014,9 +1014,9 @@ public:
                          const std::string& name) :
         LLTaskInvFVBridge(panel, uuid, name) {}
 
-    virtual BOOL canOpenItem() const { return TRUE; }
+    virtual bool canOpenItem() const { return true; }
     virtual void openItem();
-    virtual BOOL removeItem();
+    virtual bool removeItem();
 };
 
 void LLTaskNotecardBridge::openItem()
@@ -1029,7 +1029,7 @@ void LLTaskNotecardBridge::openItem()
 
     // Note: even if we are not allowed to modify copyable notecard, we should be able to view it
     LLInventoryItem *item = dynamic_cast<LLInventoryItem*>(object->getInventoryObject(mUUID));
-    BOOL item_copy = item && gAgent.allowOperation(PERM_COPY, item->getPermissions(), GP_OBJECT_MANIPULATE);
+    bool item_copy = item && gAgent.allowOperation(PERM_COPY, item->getPermissions(), GP_OBJECT_MANIPULATE);
     if( item_copy
         || object->permModify()
         || gAgent.isGodlike())
@@ -1045,7 +1045,7 @@ void LLTaskNotecardBridge::openItem()
     }
 }
 
-BOOL LLTaskNotecardBridge::removeItem()
+bool LLTaskNotecardBridge::removeItem()
 {
     LLFloaterReg::hideInstance("preview_notecard", LLSD(mUUID));
     return LLTaskInvFVBridge::removeItem();
@@ -1063,9 +1063,9 @@ public:
                         const std::string& name) :
     LLTaskInvFVBridge(panel, uuid, name) {}
 
-    virtual BOOL canOpenItem() const { return TRUE; }
+    virtual bool canOpenItem() const { return true; }
     virtual void openItem();
-    virtual BOOL removeItem();
+    virtual bool removeItem();
 };
 
 void LLTaskGestureBridge::openItem()
@@ -1078,7 +1078,7 @@ void LLTaskGestureBridge::openItem()
     LLPreviewGesture::show(mUUID, mPanel->getTaskUUID());
 }
 
-BOOL LLTaskGestureBridge::removeItem()
+bool LLTaskGestureBridge::removeItem()
 {
     // Don't need to deactivate gesture because gestures inside objects can never be active.
     LLFloaterReg::hideInstance("preview_gesture", LLSD(mUUID));
@@ -1097,9 +1097,9 @@ public:
                           const std::string& name) :
         LLTaskInvFVBridge(panel, uuid, name) {}
 
-    virtual BOOL canOpenItem() const { return TRUE; }
+    virtual bool canOpenItem() const { return true; }
     virtual void openItem();
-    virtual BOOL removeItem();
+    virtual bool removeItem();
 };
 
 void LLTaskAnimationBridge::openItem()
@@ -1117,7 +1117,7 @@ void LLTaskAnimationBridge::openItem()
     }
 }
 
-BOOL LLTaskAnimationBridge::removeItem()
+bool LLTaskAnimationBridge::removeItem()
 {
     LLFloaterReg::hideInstance("preview_anim", LLSD(mUUID));
     return LLTaskInvFVBridge::removeItem();
@@ -1141,7 +1141,7 @@ public:
 
 LLUIImagePtr LLTaskWearableBridge::getIcon() const
 {
-    return LLInventoryIcon::getIcon(mAssetType, mInventoryType, mFlags, FALSE );
+    return LLInventoryIcon::getIcon(mAssetType, mInventoryType, mFlags, false );
 }
 
 ///----------------------------------------------------------------------------
@@ -1163,7 +1163,7 @@ public:
 
 LLUIImagePtr LLTaskSettingsBridge::getIcon() const
 {
-    return LLInventoryIcon::getIcon(mAssetType, mInventoryType, mFlags, FALSE);
+    return LLInventoryIcon::getIcon(mAssetType, mInventoryType, mFlags, false);
 }
 
 LLSettingsType::type_e LLTaskSettingsBridge::getSettingsType() const
@@ -1183,9 +1183,9 @@ public:
                          const std::string& name) :
         LLTaskInvFVBridge(panel, uuid, name) {}
 
-    BOOL canOpenItem() const override { return TRUE; }
+    bool canOpenItem() const override { return true; }
     void openItem() override;
-    BOOL removeItem() override;
+    bool removeItem() override;
 };
 
 void LLTaskMaterialBridge::openItem()
@@ -1198,7 +1198,7 @@ void LLTaskMaterialBridge::openItem()
 
     // Note: even if we are not allowed to modify copyable notecard, we should be able to view it
     LLInventoryItem *item = dynamic_cast<LLInventoryItem*>(object->getInventoryObject(mUUID));
-    BOOL item_copy = item && gAgent.allowOperation(PERM_COPY, item->getPermissions(), GP_OBJECT_MANIPULATE);
+    bool item_copy = item && gAgent.allowOperation(PERM_COPY, item->getPermissions(), GP_OBJECT_MANIPULATE);
     if( item_copy
         || object->permModify()
         || gAgent.isGodlike())
@@ -1211,12 +1211,12 @@ void LLTaskMaterialBridge::openItem()
         {
             mat->setObjectID(mPanel->getTaskUUID());
             mat->openFloater(floater_key);
-            mat->setFocus(TRUE);
+            mat->setFocus(true);
         }
     }
 }
 
-BOOL LLTaskMaterialBridge::removeItem()
+bool LLTaskMaterialBridge::removeItem()
 {
     LLFloaterReg::hideInstance("material_editor", LLSD(mUUID));
     return LLTaskInvFVBridge::removeItem();
@@ -1339,9 +1339,9 @@ LLPanelObjectInventory::LLPanelObjectInventory(const LLPanelObjectInventory::Par
     LLPanel(p),
     mScroller(NULL),
     mFolders(NULL),
-    mHaveInventory(FALSE),
-    mIsInventoryEmpty(TRUE),
-    mInventoryNeedsUpdate(FALSE),
+    mHaveInventory(false),
+    mIsInventoryEmpty(true),
+    mInventoryNeedsUpdate(false),
     mInventoryViewModel(p.name),
     mShowRootFolder(p.show_root_folder)
 {
@@ -1365,7 +1365,7 @@ LLPanelObjectInventory::~LLPanelObjectInventory()
     }
 }
 
-BOOL LLPanelObjectInventory::postBuild()
+bool LLPanelObjectInventory::postBuild()
 {
     // clear contents and initialize menus, sets up mFolders
     reset();
@@ -1373,7 +1373,7 @@ BOOL LLPanelObjectInventory::postBuild()
     // Register an idle update callback
     gIdleCallbacks.addFunction(idle, this);
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelObjectInventory::doToSelected(const LLSD& userdata)
@@ -1383,8 +1383,8 @@ void LLPanelObjectInventory::doToSelected(const LLSD& userdata)
 
 void LLPanelObjectInventory::clearContents()
 {
-    mHaveInventory = FALSE;
-    mIsInventoryEmpty = TRUE;
+    mHaveInventory = false;
+    mIsInventoryEmpty = true;
     if (LLToolDragAndDrop::getInstance() && LLToolDragAndDrop::getInstance()->getSource() == LLToolDragAndDrop::SOURCE_WORLD)
     {
         LLToolDragAndDrop::getInstance()->endDrag();
@@ -1463,7 +1463,7 @@ void LLPanelObjectInventory::inventoryChanged(LLViewerObject* object,
     //      << " task  UUID: " << object->mID << LL_ENDL;
     if(mTaskUUID == object->mID)
     {
-        mInventoryNeedsUpdate = TRUE;
+        mInventoryNeedsUpdate = true;
     }
 }
 
@@ -1475,7 +1475,7 @@ void LLPanelObjectInventory::updateInventory()
     // We're still interested in this task's inventory.
     std::vector<LLUUID> selected_item_ids;
     std::set<LLFolderViewItem*> selected_items;
-    BOOL inventory_has_focus = FALSE;
+    bool inventory_has_focus = false;
     if (mHaveInventory && mFolders)
     {
         selected_items = mFolders->getSelectionList();
@@ -1498,14 +1498,14 @@ void LLPanelObjectInventory::updateInventory()
         if (inventory_root)
         {
             reset();
-            mIsInventoryEmpty = FALSE;
+            mIsInventoryEmpty = false;
             createFolderViews(inventory_root, contents);
-            mFolders->setEnabled(TRUE);
+            mFolders->setEnabled(true);
         }
         else
         {
             // TODO: create an empty inventory
-            mIsInventoryEmpty = TRUE;
+            mIsInventoryEmpty = true;
         }
 
         mHaveInventory = !mIsInventoryEmpty || !objectp->isInventoryDirty();
@@ -1520,8 +1520,8 @@ void LLPanelObjectInventory::updateInventory()
     else
     {
         // TODO: create an empty inventory
-        mIsInventoryEmpty = TRUE;
-        mHaveInventory = TRUE;
+        mIsInventoryEmpty = true;
+        mHaveInventory = true;
     }
 
     // restore previous selection
@@ -1536,12 +1536,12 @@ void LLPanelObjectInventory::updateInventory()
             //HACK: "set" first item then "change" each other one to get keyboard focus right
             if (first_item)
             {
-                mFolders->setSelection(selected_item, TRUE, inventory_has_focus);
-                first_item = FALSE;
+                mFolders->setSelection(selected_item, true, inventory_has_focus);
+                first_item = false;
             }
             else
             {
-                mFolders->changeSelection(selected_item, TRUE);
+                mFolders->changeSelection(selected_item, true);
             }
         }
     }
@@ -1550,7 +1550,7 @@ void LLPanelObjectInventory::updateInventory()
     {
         mFolders->requestArrange();
     }
-    mInventoryNeedsUpdate = FALSE;
+    mInventoryNeedsUpdate = false;
     // Edit menu handler is set in onFocusReceived
 }
 
@@ -1671,8 +1671,8 @@ void LLPanelObjectInventory::createViewsForCategory(LLInventoryObject::object_li
 void LLPanelObjectInventory::refresh()
 {
     //LL_INFOS() << "LLPanelObjectInventory::refresh()" << LL_ENDL;
-    BOOL has_inventory = FALSE;
-    const BOOL non_root_ok = TRUE;
+    bool has_inventory = false;
+    const bool non_root_ok = true;
     LLObjectSelectionHandle selection = LLSelectMgr::getInstance()->getSelection();
     LLSelectNode* node = selection->getFirstRootNode(NULL, non_root_ok);
     if(node && node->mValid)
@@ -1683,7 +1683,7 @@ void LLPanelObjectInventory::refresh()
         {
             // determine if we need to make a request. Start with a
             // default based on if we have inventory at all.
-            BOOL make_request = !mHaveInventory;
+            bool make_request = !mHaveInventory;
 
             // If the task id is different than what we've stored,
             // then make the request.
@@ -1691,7 +1691,7 @@ void LLPanelObjectInventory::refresh()
             {
                 mTaskUUID = object->mID;
                 mAttachmentUUID = object->getAttachmentItemID();
-                make_request = TRUE;
+                make_request = true;
 
                 // This is a new object so pre-emptively clear the contents
                 // Otherwise we show the old stuff until the update comes in
@@ -1717,7 +1717,7 @@ void LLPanelObjectInventory::refresh()
             {
                 if(node->mInventorySerial != object->getInventorySerial() || object->isInventoryDirty())
                 {
-                    make_request = TRUE;
+                    make_request = true;
                 }
             }
 
@@ -1726,7 +1726,7 @@ void LLPanelObjectInventory::refresh()
             {
                 requestVOInventory();
             }
-            has_inventory = TRUE;
+            has_inventory = true;
         }
     }
     if(!has_inventory)
@@ -1795,14 +1795,14 @@ void LLPanelObjectInventory::deleteAllChildren()
     LLView::deleteAllChildren();
 }
 
-BOOL LLPanelObjectInventory::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop, EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string& tooltip_msg)
+bool LLPanelObjectInventory::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop, EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string& tooltip_msg)
 {
     if (mFolders)
     {
         LLFolderViewItem* folderp = mFolders->getNextFromChild(NULL);
         if (!folderp)
         {
-            return FALSE;
+            return false;
         }
         // Try to pass on unmodified mouse coordinates
         S32 local_x = x - mFolders->getRect().mLeft;
@@ -1820,7 +1820,7 @@ BOOL LLPanelObjectInventory::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL dro
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -1886,9 +1886,9 @@ void LLPanelObjectInventory::clearItemIDs()
     mItemMap.clear();
 }
 
-BOOL LLPanelObjectInventory::handleKeyHere( KEY key, MASK mask )
+bool LLPanelObjectInventory::handleKeyHere( KEY key, MASK mask )
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     switch (key)
     {
     case KEY_DELETE:
@@ -1900,23 +1900,23 @@ BOOL LLPanelObjectInventory::handleKeyHere( KEY key, MASK mask )
         if (isSelectionRemovable() && mask == MASK_NONE)
         {
             LLInventoryAction::doToSelected(&gInventory, mFolders, "delete");
-            handled = TRUE;
+            handled = true;
         }
         break;
     }
     return handled;
 }
 
-BOOL LLPanelObjectInventory::isSelectionRemovable()
+bool LLPanelObjectInventory::isSelectionRemovable()
 {
     if (!mFolders || !mFolders->getRoot())
     {
-        return FALSE;
+        return false;
     }
     std::set<LLFolderViewItem*> selection_set = mFolders->getRoot()->getSelectionList();
     if (selection_set.empty())
     {
-        return FALSE;
+        return false;
     }
     for (std::set<LLFolderViewItem*>::iterator iter = selection_set.begin();
         iter != selection_set.end();
@@ -1926,8 +1926,8 @@ BOOL LLPanelObjectInventory::isSelectionRemovable()
         const LLFolderViewModelItemInventory *listener = dynamic_cast<const LLFolderViewModelItemInventory*>(item->getViewModelItem());
         if (!listener || !listener->isItemRemovable() || listener->isItemInTrash())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
diff --git a/indra/newview/llpanelobjectinventory.h b/indra/newview/llpanelobjectinventory.h
index cef1ca90e5..c150a841ae 100644
--- a/indra/newview/llpanelobjectinventory.h
+++ b/indra/newview/llpanelobjectinventory.h
@@ -60,7 +60,7 @@ public:
     LLPanelObjectInventory(const Params&);
     virtual ~LLPanelObjectInventory();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     LLFolderViewModelInventory& getRootViewModel() { return mInventoryViewModel; }
 
@@ -76,7 +76,7 @@ public:
 
     virtual void draw();
     virtual void deleteAllChildren();
-    virtual BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop, EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string& tooltip_msg);
+    virtual bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop, EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string& tooltip_msg);
 
     /*virtual*/ void onFocusLost();
     /*virtual*/ void onFocusReceived();
@@ -101,8 +101,8 @@ protected:
     void removeItemID(const LLUUID& id);
     void clearItemIDs();
 
-    BOOL            handleKeyHere( KEY key, MASK mask );
-    BOOL            isSelectionRemovable();
+    bool            handleKeyHere( KEY key, MASK mask );
+    bool            isSelectionRemovable();
 
 private:
     std::map<LLUUID, LLFolderViewItem*> mItemMap;
@@ -112,9 +112,9 @@ private:
 
     LLUUID mTaskUUID;
     LLUUID mAttachmentUUID;
-    BOOL mHaveInventory; // 'Loading' label and used for initial request
-    BOOL mIsInventoryEmpty; // 'Empty' label
-    BOOL mInventoryNeedsUpdate; // for idle, set on changed callback
+    bool mHaveInventory; // 'Loading' label and used for initial request
+    bool mIsInventoryEmpty; // 'Empty' label
+    bool mInventoryNeedsUpdate; // for idle, set on changed callback
     LLFolderViewModelInventory  mInventoryViewModel;
     bool mShowRootFolder;
 };
diff --git a/indra/newview/llpaneloutfitedit.cpp b/indra/newview/llpaneloutfitedit.cpp
index 1bfae630a0..ce545ae21d 100644
--- a/indra/newview/llpaneloutfitedit.cpp
+++ b/indra/newview/llpaneloutfitedit.cpp
@@ -187,8 +187,8 @@ private:
     // Populate the menu with items like "New Skin", "New Pants", etc.
     static void populateCreateWearableSubmenus(LLMenuGL* menu)
     {
-        LLView* menu_clothes    = gMenuHolder->getChildView("COF.Gear.New_Clothes", FALSE);
-        LLView* menu_bp         = gMenuHolder->getChildView("COF.Gear.New_Body_Parts", FALSE);
+        LLView* menu_clothes    = gMenuHolder->getChildView("COF.Gear.New_Clothes", false);
+        LLView* menu_bp         = gMenuHolder->getChildView("COF.Gear.New_Body_Parts", false);
         LLWearableType * wearable_type_inst = LLWearableType::getInstance();
 
         for (U8 i = LLWearableType::WT_SHAPE; i != (U8) LLWearableType::WT_COUNT; ++i)
@@ -407,7 +407,7 @@ LLPanelOutfitEdit::LLPanelOutfitEdit()
     mGearMenuBtn(NULL)
 {
     mSavedFolderState = new LLSaveFolderState();
-    mSavedFolderState->setApply(FALSE);
+    mSavedFolderState->setApply(false);
 
 
     LLOutfitObserver& observer = LLOutfitObserver::instance();
@@ -440,7 +440,7 @@ LLPanelOutfitEdit::~LLPanelOutfitEdit()
     }
 }
 
-BOOL LLPanelOutfitEdit::postBuild()
+bool LLPanelOutfitEdit::postBuild()
 {
     // gInventory.isInventoryUsable() no longer needs to be tested per Richard's fix for race conditions between inventory and panels
 
@@ -568,7 +568,7 @@ BOOL LLPanelOutfitEdit::postBuild()
     getChild<LLButton>(SAVE_AS_BTN)->setCommitCallback(boost::bind(&LLPanelOutfitEdit::saveOutfit, this, true));
 
     onOutfitChanging(gAgentWearables.isCOFChangeInProgress());
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -595,7 +595,7 @@ void LLPanelOutfitEdit::moveWearable(bool closer_to_body)
 
 void LLPanelOutfitEdit::toggleAddWearablesPanel()
 {
-    BOOL current_visibility = mAddWearablesPanel->getVisible();
+    bool current_visibility = mAddWearablesPanel->getVisible();
     showAddWearablesPanel(!current_visibility);
 }
 
@@ -655,7 +655,7 @@ void LLPanelOutfitEdit::showWearablesFilter()
     }
     else
     {
-        mSearchFilter->setFocus(TRUE);
+        mSearchFilter->setFocus(true);
     }
 }
 
@@ -667,7 +667,7 @@ void LLPanelOutfitEdit::showWearablesListView()
         updateFiltersVisibility();
         mWearableListManager->populateIfNeeded();
     }
-    mListViewBtn->setToggleState(TRUE);
+    mListViewBtn->setToggleState(true);
 }
 
 void LLPanelOutfitEdit::showWearablesFolderView()
@@ -677,7 +677,7 @@ void LLPanelOutfitEdit::showWearablesFolderView()
         updateWearablesPanelVerbButtons();
         updateFiltersVisibility();
     }
-    mFolderViewBtn->setToggleState(TRUE);
+    mFolderViewBtn->setToggleState(true);
 }
 
 void LLPanelOutfitEdit::updateFiltersVisibility()
@@ -693,7 +693,7 @@ void LLPanelOutfitEdit::onFolderViewFilterCommitted(LLUICtrl* ctrl)
 
     mInventoryItemsPanel->setFilterTypes(mFolderViewItemTypes[curr_filter_type].inventoryMask);
 
-    mSavedFolderState->setApply(TRUE);
+    mSavedFolderState->setApply(true);
     mInventoryItemsPanel->getRootFolder()->applyFunctorRecursively(*mSavedFolderState);
 
     LLOpenFoldersWithSelection opener;
@@ -735,7 +735,7 @@ void LLPanelOutfitEdit::onSearchEdit(const std::string& string)
         mInventoryItemsPanel->setFilterSubString(LLStringUtil::null);
         mWearableItemsList->setFilterSubString(LLStringUtil::null, true);
         // re-open folders that were initially open
-        mSavedFolderState->setApply(TRUE);
+        mSavedFolderState->setApply(true);
         mInventoryItemsPanel->getRootFolder()->applyFunctorRecursively(*mSavedFolderState);
         LLOpenFoldersWithSelection opener;
         mInventoryItemsPanel->getRootFolder()->applyFunctorRecursively(opener);
@@ -757,7 +757,7 @@ void LLPanelOutfitEdit::onSearchEdit(const std::string& string)
     // save current folder open state if no filter currently applied
     if (mInventoryItemsPanel->getFilterSubString().empty())
     {
-        mSavedFolderState->setApply(FALSE);
+        mSavedFolderState->setApply(false);
         mInventoryItemsPanel->getRootFolder()->applyFunctorRecursively(*mSavedFolderState);
     }
 
@@ -997,10 +997,10 @@ void LLPanelOutfitEdit::updatePlusButton()
                     current_item->getLocalRect().mBottom);
 
     mAddToLookBtn->setRect(btn_rect);
-    mAddToLookBtn->setEnabled(TRUE);
+    mAddToLookBtn->setEnabled(true);
     if (!mAddToLookBtn->getVisible())
     {
-        mAddToLookBtn->setVisible(TRUE);
+        mAddToLookBtn->setVisible(true);
     }
 
     current_item->addChild(mAddToLookBtn); */
@@ -1167,7 +1167,7 @@ void LLPanelOutfitEdit::update()
     updateVerbs();
 }
 
-BOOL LLPanelOutfitEdit::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLPanelOutfitEdit::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                           EDragAndDropType cargo_type,
                                           void* cargo_data,
                                           EAcceptance* accept,
@@ -1176,7 +1176,7 @@ BOOL LLPanelOutfitEdit::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
     if (cargo_data == NULL)
     {
         LL_WARNS() << "cargo_data is NULL" << LL_ENDL;
-        return TRUE;
+        return true;
     }
 
     switch (cargo_type)
@@ -1214,14 +1214,14 @@ BOOL LLPanelOutfitEdit::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelOutfitEdit::displayCurrentOutfit()
 {
     if (!getVisible())
     {
-        setVisible(TRUE);
+        setVisible(true);
     }
 
     updateCurrentOutfitName();
@@ -1264,8 +1264,8 @@ bool LLPanelOutfitEdit::switchPanels(LLPanel* switch_from_panel, LLPanel* switch
 {
     if(switch_from_panel && switch_to_panel && !switch_to_panel->getVisible())
     {
-        switch_from_panel->setVisible(FALSE);
-        switch_to_panel->setVisible(TRUE);
+        switch_from_panel->setVisible(false);
+        switch_to_panel->setVisible(true);
         return true;
     }
     return false;
@@ -1383,13 +1383,13 @@ void LLPanelOutfitEdit::updateWearablesPanelVerbButtons()
 {
     if(mWearablesListViewPanel->getVisible())
     {
-        mFolderViewBtn->setToggleState(FALSE);
+        mFolderViewBtn->setToggleState(false);
         mFolderViewBtn->setImageOverlay(getString("folder_view_off"), mFolderViewBtn->getImageOverlayHAlign());
         mListViewBtn->setImageOverlay(getString("list_view_on"), mListViewBtn->getImageOverlayHAlign());
     }
     else if(mInventoryItemsPanel->getVisible())
     {
-        mListViewBtn->setToggleState(FALSE);
+        mListViewBtn->setToggleState(false);
         mListViewBtn->setImageOverlay(getString("list_view_off"), mListViewBtn->getImageOverlayHAlign());
         mFolderViewBtn->setImageOverlay(getString("folder_view_on"), mFolderViewBtn->getImageOverlayHAlign());
     }
@@ -1429,9 +1429,9 @@ void LLPanelOutfitEdit::saveListSelection()
             LLFolderViewFolder* parent = item->getParentFolder();
             if(parent)
             {
-                parent->setOpenArrangeRecursively(TRUE, LLFolderViewFolder::RECURSE_UP);
+                parent->setOpenArrangeRecursively(true, LLFolderViewFolder::RECURSE_UP);
             }
-            mInventoryItemsPanel->getRootFolder()->changeSelection(item, TRUE);
+            mInventoryItemsPanel->getRootFolder()->changeSelection(item, true);
         }
         mInventoryItemsPanel->getRootFolder()->scrollToShowSelection();
     }
diff --git a/indra/newview/llpaneloutfitedit.h b/indra/newview/llpaneloutfitedit.h
index ba1b69a5d7..384b7faee4 100644
--- a/indra/newview/llpaneloutfitedit.h
+++ b/indra/newview/llpaneloutfitedit.h
@@ -124,7 +124,7 @@ public:
     LLPanelOutfitEdit();
     /*virtual*/ ~LLPanelOutfitEdit();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
     void moveWearable(bool closer_to_body);
@@ -181,7 +181,7 @@ public:
 
     void resetAccordionState();
 
-    virtual BOOL    handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    virtual bool    handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                       EDragAndDropType cargo_type,
                                       void* cargo_data,
                                       EAcceptance* accept,
diff --git a/indra/newview/llpaneloutfitsinventory.cpp b/indra/newview/llpaneloutfitsinventory.cpp
index edeeb93560..5b595a48b7 100644
--- a/indra/newview/llpaneloutfitsinventory.cpp
+++ b/indra/newview/llpaneloutfitsinventory.cpp
@@ -78,7 +78,7 @@ LLPanelOutfitsInventory::~LLPanelOutfitsInventory()
 }
 
 // virtual
-BOOL LLPanelOutfitsInventory::postBuild()
+bool LLPanelOutfitsInventory::postBuild()
 {
     initTabPanels();
     initListCommandsHandlers();
@@ -96,7 +96,7 @@ BOOL LLPanelOutfitsInventory::postBuild()
     getChild<LLButton>(SAVE_BTN)->setCommitCallback(boost::bind(&LLPanelOutfitsInventory::saveOutfit, this, false));
     getChild<LLButton>(SAVE_AS_BTN)->setCommitCallback(boost::bind(&LLPanelOutfitsInventory::saveOutfit, this, true));
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -137,7 +137,7 @@ void LLPanelOutfitsInventory::onOpen(const LLSD& key)
                 LLFolderViewFolder* first_outfit = dynamic_cast<LLFolderViewFolder*>(my_outfits_folder->getFirstChild());
                 if (first_outfit)
                 {
-                    first_outfit->setOpen(TRUE);
+                    first_outfit->setOpen(true);
                 }
             }
         }
diff --git a/indra/newview/llpaneloutfitsinventory.h b/indra/newview/llpaneloutfitsinventory.h
index c858803ede..0c501d5c71 100644
--- a/indra/newview/llpaneloutfitsinventory.h
+++ b/indra/newview/llpaneloutfitsinventory.h
@@ -46,7 +46,7 @@ public:
     LLPanelOutfitsInventory();
     virtual ~LLPanelOutfitsInventory();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
     void onSearchEdit(const std::string& string);
diff --git a/indra/newview/llpanelpeople.cpp b/indra/newview/llpanelpeople.cpp
index bdf47976d8..28303f3c0d 100644
--- a/indra/newview/llpanelpeople.cpp
+++ b/indra/newview/llpanelpeople.cpp
@@ -313,9 +313,9 @@ public:
         mEventTimer.stop();
     }
 
-    virtual BOOL tick() // from LLEventTimer
+    virtual bool tick() // from LLEventTimer
     {
-        return FALSE;
+        return false;
     }
 };
 
@@ -367,9 +367,9 @@ public:
     }
 
 
-    /*virtual*/ BOOL tick()
+    /*virtual*/ bool tick()
     {
-        if (!mIsActive) return FALSE;
+        if (!mIsActive) return false;
 
         if (mMask & (LLFriendObserver::ADD | LLFriendObserver::REMOVE | LLFriendObserver::ONLINE))
         {
@@ -380,7 +380,7 @@ public:
         mEventTimer.stop();
         mMask = 0;
 
-        return FALSE;
+        return false;
     }
 
     // virtual
@@ -508,10 +508,10 @@ public:
         }
     }
 
-    /*virtual*/ BOOL tick()
+    /*virtual*/ bool tick()
     {
         update();
-        return FALSE;
+        return false;
     }
 private:
 };
@@ -577,6 +577,11 @@ LLPanelPeople::~LLPanelPeople()
     delete mFriendListUpdater;
     delete mRecentListUpdater;
 
+    mNearbyFilterCommitConnection.disconnect();
+    mFriedsFilterCommitConnection.disconnect();
+    mGroupsFilterCommitConnection.disconnect();
+    mRecentFilterCommitConnection.disconnect();
+
     if(LLVoiceClient::instanceExists())
     {
         LLVoiceClient::getInstance()->removeObserver(this);
@@ -609,14 +614,14 @@ void LLPanelPeople::removePicker()
     }
 }
 
-BOOL LLPanelPeople::postBuild()
+bool LLPanelPeople::postBuild()
 {
     S32 max_premium = LLAgentBenefitsMgr::get("Premium").getGroupMembershipLimit();
 
-    getChild<LLFilterEditor>("nearby_filter_input")->setCommitCallback(boost::bind(&LLPanelPeople::onFilterEdit, this, _2));
-    getChild<LLFilterEditor>("friends_filter_input")->setCommitCallback(boost::bind(&LLPanelPeople::onFilterEdit, this, _2));
-    getChild<LLFilterEditor>("groups_filter_input")->setCommitCallback(boost::bind(&LLPanelPeople::onFilterEdit, this, _2));
-    getChild<LLFilterEditor>("recent_filter_input")->setCommitCallback(boost::bind(&LLPanelPeople::onFilterEdit, this, _2));
+    mNearbyFilterCommitConnection = getChild<LLFilterEditor>("nearby_filter_input")->setCommitCallback(boost::bind(&LLPanelPeople::onFilterEdit, this, _2));
+    mFriedsFilterCommitConnection = getChild<LLFilterEditor>("friends_filter_input")->setCommitCallback(boost::bind(&LLPanelPeople::onFilterEdit, this, _2));
+    mGroupsFilterCommitConnection = getChild<LLFilterEditor>("groups_filter_input")->setCommitCallback(boost::bind(&LLPanelPeople::onFilterEdit, this, _2));
+    mRecentFilterCommitConnection = getChild<LLFilterEditor>("recent_filter_input")->setCommitCallback(boost::bind(&LLPanelPeople::onFilterEdit, this, _2));
 
     if(LLAgentBenefitsMgr::current().getGroupMembershipLimit() < max_premium)
     {
@@ -729,7 +734,7 @@ BOOL LLPanelPeople::postBuild()
     mOnlineFriendList->setRefreshCompleteCallback(boost::bind(&LLPanelPeople::onFriendListRefreshComplete, this, _1, _2));
     mAllFriendList->setRefreshCompleteCallback(boost::bind(&LLPanelPeople::onFriendListRefreshComplete, this, _1, _2));
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -831,7 +836,7 @@ void LLPanelPeople::updateNearbyList()
     mNearbyList->setDirty();
 
     DISTANCE_COMPARATOR.updateAvatarsPositions(positions, mNearbyList->getIDs());
-    LLActiveSpeakerMgr::instance().update(TRUE);
+    LLActiveSpeakerMgr::instance().update(true);
 }
 
 void LLPanelPeople::updateRecentList()
@@ -866,8 +871,8 @@ void LLPanelPeople::updateButtons()
         LLPanel* groups_panel = mTabContainer->getCurrentPanel();
         groups_panel->getChildView("minus_btn")->setEnabled(item_selected && selected_id.notNull()); // a real group selected
 
-        U32 groups_count = gAgent.mGroups.size();
-        S32 max_groups = LLAgentBenefitsMgr::current().getGroupMembershipLimit();
+        U32 groups_count = static_cast<U32>(gAgent.mGroups.size());
+        U32 max_groups = LLAgentBenefitsMgr::current().getGroupMembershipLimit();
         U32 groups_remaining = max_groups > groups_count ? max_groups - groups_count : 0;
         groups_panel->getChild<LLUICtrl>("groupcount")->setTextArg("[COUNT]", llformat("%d", groups_count));
         groups_panel->getChild<LLUICtrl>("groupcount")->setTextArg("[REMAINING]", llformat("%d", groups_remaining));
@@ -887,7 +892,7 @@ void LLPanelPeople::updateButtons()
         LLPanel* cur_panel = mTabContainer->getCurrentPanel();
         if (cur_panel)
         {
-            if (cur_panel->hasChild("add_friend_btn", TRUE))
+            if (cur_panel->hasChild("add_friend_btn", true))
                 cur_panel->getChildView("add_friend_btn")->setEnabled(item_selected && !is_friend && !is_self);
 
             if (friends_tab_active)
@@ -961,25 +966,6 @@ void LLPanelPeople::getCurrentItemIDs(uuid_vec_t& selected_uuids) const
 
 }
 
-void LLPanelPeople::showGroupMenu(LLMenuGL* menu)
-{
-    // Shows the menu at the top of the button bar.
-
-    // Calculate its coordinates.
-    // (assumes that groups panel is the current tab)
-    LLPanel* bottom_panel = mTabContainer->getCurrentPanel()->getChild<LLPanel>("bottom_panel");
-    LLPanel* parent_panel = mTabContainer->getCurrentPanel();
-    menu->arrangeAndClear();
-    S32 menu_height = menu->getRect().getHeight();
-    S32 menu_x = -2; // *HACK: compensates HPAD in showPopup()
-    S32 menu_y = bottom_panel->getRect().mTop + menu_height;
-
-    // Actually show the menu.
-    menu->buildDrawLabels();
-    menu->updateParent(LLMenuGL::sMenuContainer);
-    LLMenuGL::showPopup(parent_panel, menu, menu_x, menu_y);
-}
-
 void LLPanelPeople::setSortOrder(LLAvatarList* list, ESortOrder order, bool save)
 {
     switch (order)
@@ -1184,11 +1170,11 @@ bool LLPanelPeople::isItemsFreeOfFriends(const uuid_vec_t& uuids)
 void LLPanelPeople::onAddFriendWizButtonClicked()
 {
     LLPanel* cur_panel = mTabContainer->getCurrentPanel();
-    LLView * button = cur_panel->findChild<LLButton>("friends_add_btn", TRUE);
+    LLView * button = cur_panel->findChild<LLButton>("friends_add_btn", true);
 
     // Show add friend wizard.
     LLFloater* root_floater = gFloaterView->getParentFloater(this);
-    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLPanelPeople::onAvatarPicked, _1, _2), FALSE, TRUE, FALSE, root_floater->getName(), button);
+    LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&LLPanelPeople::onAvatarPicked, _1, _2), false, true, false, root_floater->getName(), button);
     if (!picker)
     {
         return;
diff --git a/indra/newview/llpanelpeople.h b/indra/newview/llpanelpeople.h
index a00700700c..768ba1ef49 100644
--- a/indra/newview/llpanelpeople.h
+++ b/indra/newview/llpanelpeople.h
@@ -50,12 +50,12 @@ public:
     LLPanelPeople();
     virtual ~LLPanelPeople();
 
-    /*virtual*/ BOOL    postBuild();
-    /*virtual*/ void    onOpen(const LLSD& key);
-    /*virtual*/ bool    notifyChildren(const LLSD& info);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
+    bool notifyChildren(const LLSD& info) override;
     // Implements LLVoiceClientStatusObserver::onChange() to enable call buttons
     // when voice is available
-    /*virtual*/ void onChange(EStatusType status, const LLSD& channelInfo, bool proximal);
+    void onChange(EStatusType status, const LLSD& channelInfo, bool proximal) override;
 
     // internals
     class Updater;
@@ -87,7 +87,6 @@ private:
     std::string             getActiveTabName() const;
     LLUUID                  getCurrentItemID() const;
     void                    getCurrentItemIDs(uuid_vec_t& selected_uuids) const;
-    void                    showGroupMenu(LLMenuGL* menu);
     void                    setSortOrder(LLAvatarList* list, ESortOrder order, bool save = true);
 
     // UI callbacks
@@ -148,6 +147,11 @@ private:
     Updater*                mRecentListUpdater;
     Updater*                mButtonsUpdater;
     LLHandle< LLFloater >   mPicker;
+
+    boost::signals2::connection mNearbyFilterCommitConnection;
+    boost::signals2::connection mFriedsFilterCommitConnection;
+    boost::signals2::connection mGroupsFilterCommitConnection;
+    boost::signals2::connection mRecentFilterCommitConnection;
 };
 
 #endif //LL_LLPANELPEOPLE_H
diff --git a/indra/newview/llpanelpermissions.cpp b/indra/newview/llpanelpermissions.cpp
index 90cfcc6d8a..2a27a6e143 100644
--- a/indra/newview/llpanelpermissions.cpp
+++ b/indra/newview/llpanelpermissions.cpp
@@ -151,10 +151,10 @@ std::string click_action_to_string_value( U8 action)
 LLPanelPermissions::LLPanelPermissions() :
     LLPanel()
 {
-    setMouseOpaque(FALSE);
+    setMouseOpaque(false);
 }
 
-BOOL LLPanelPermissions::postBuild()
+bool LLPanelPermissions::postBuild()
 {
     childSetCommitCallback("Object Name",LLPanelPermissions::onCommitName,this);
     getChild<LLLineEditor>("Object Name")->setPrevalidate(LLTextValidate::validateASCIIPrintableNoPipe);
@@ -188,7 +188,7 @@ BOOL LLPanelPermissions::postBuild()
     mLabelOwnerName = getChild<LLTextBox>("Owner Name");
     mLabelCreatorName = getChild<LLTextBox>("Creator Name");
 
-    return TRUE;
+    return true;
 }
 
 
@@ -208,85 +208,85 @@ LLPanelPermissions::~LLPanelPermissions()
 
 void LLPanelPermissions::disableAll()
 {
-    getChildView("perm_modify")->setEnabled(FALSE);
+    getChildView("perm_modify")->setEnabled(false);
     getChild<LLUICtrl>("perm_modify")->setValue(LLStringUtil::null);
 
-    getChildView("pathfinding_attributes_value")->setEnabled(FALSE);
+    getChildView("pathfinding_attributes_value")->setEnabled(false);
     getChild<LLUICtrl>("pathfinding_attributes_value")->setValue(LLStringUtil::null);
 
-    getChildView("Creator:")->setEnabled(FALSE);
-    getChild<LLUICtrl>("Creator Icon")->setVisible(FALSE);
+    getChildView("Creator:")->setEnabled(false);
+    getChild<LLUICtrl>("Creator Icon")->setVisible(false);
     mLabelCreatorName->setValue(LLStringUtil::null);
-    mLabelCreatorName->setEnabled(FALSE);
+    mLabelCreatorName->setEnabled(false);
 
-    getChildView("Owner:")->setEnabled(FALSE);
-    getChild<LLUICtrl>("Owner Icon")->setVisible(FALSE);
-    getChild<LLUICtrl>("Owner Group Icon")->setVisible(FALSE);
+    getChildView("Owner:")->setEnabled(false);
+    getChild<LLUICtrl>("Owner Icon")->setVisible(false);
+    getChild<LLUICtrl>("Owner Group Icon")->setVisible(false);
     mLabelOwnerName->setValue(LLStringUtil::null);
-    mLabelOwnerName->setEnabled(FALSE);
+    mLabelOwnerName->setEnabled(false);
 
-    getChildView("Group:")->setEnabled(FALSE);
+    getChildView("Group:")->setEnabled(false);
     getChild<LLUICtrl>("Group Name Proxy")->setValue(LLStringUtil::null);
-    getChildView("Group Name Proxy")->setEnabled(FALSE);
-    getChildView("button set group")->setEnabled(FALSE);
+    getChildView("Group Name Proxy")->setEnabled(false);
+    getChildView("button set group")->setEnabled(false);
 
     getChild<LLUICtrl>("Object Name")->setValue(LLStringUtil::null);
-    getChildView("Object Name")->setEnabled(FALSE);
-    getChildView("Name:")->setEnabled(FALSE);
+    getChildView("Object Name")->setEnabled(false);
+    getChildView("Name:")->setEnabled(false);
     getChild<LLUICtrl>("Group Name")->setValue(LLStringUtil::null);
-    getChildView("Group Name")->setEnabled(FALSE);
-    getChildView("Description:")->setEnabled(FALSE);
+    getChildView("Group Name")->setEnabled(false);
+    getChildView("Description:")->setEnabled(false);
     getChild<LLUICtrl>("Object Description")->setValue(LLStringUtil::null);
-    getChildView("Object Description")->setEnabled(FALSE);
+    getChildView("Object Description")->setEnabled(false);
 
-    getChild<LLUICtrl>("checkbox share with group")->setValue(FALSE);
-    getChildView("checkbox share with group")->setEnabled(FALSE);
-    getChildView("button deed")->setEnabled(FALSE);
+    getChild<LLUICtrl>("checkbox share with group")->setValue(false);
+    getChildView("checkbox share with group")->setEnabled(false);
+    getChildView("button deed")->setEnabled(false);
 
-    getChild<LLUICtrl>("checkbox allow everyone move")->setValue(FALSE);
-    getChildView("checkbox allow everyone move")->setEnabled(FALSE);
-    getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(FALSE);
-    getChildView("checkbox allow everyone copy")->setEnabled(FALSE);
+    getChild<LLUICtrl>("checkbox allow everyone move")->setValue(false);
+    getChildView("checkbox allow everyone move")->setEnabled(false);
+    getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(false);
+    getChildView("checkbox allow everyone copy")->setEnabled(false);
 
     //Next owner can:
-    getChildView("Next owner can:")->setEnabled(FALSE);
-    getChild<LLUICtrl>("checkbox next owner can modify")->setValue(FALSE);
-    getChildView("checkbox next owner can modify")->setEnabled(FALSE);
-    getChild<LLUICtrl>("checkbox next owner can copy")->setValue(FALSE);
-    getChildView("checkbox next owner can copy")->setEnabled(FALSE);
-    getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(FALSE);
-    getChildView("checkbox next owner can transfer")->setEnabled(FALSE);
+    getChildView("Next owner can:")->setEnabled(false);
+    getChild<LLUICtrl>("checkbox next owner can modify")->setValue(false);
+    getChildView("checkbox next owner can modify")->setEnabled(false);
+    getChild<LLUICtrl>("checkbox next owner can copy")->setValue(false);
+    getChildView("checkbox next owner can copy")->setEnabled(false);
+    getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(false);
+    getChildView("checkbox next owner can transfer")->setEnabled(false);
 
     //checkbox for sale
-    getChild<LLUICtrl>("checkbox for sale")->setValue(FALSE);
-    getChildView("checkbox for sale")->setEnabled(FALSE);
+    getChild<LLUICtrl>("checkbox for sale")->setValue(false);
+    getChildView("checkbox for sale")->setEnabled(false);
 
     //checkbox include in search
-    getChild<LLUICtrl>("search_check")->setValue(FALSE);
-    getChildView("search_check")->setEnabled(FALSE);
+    getChild<LLUICtrl>("search_check")->setValue(false);
+    getChildView("search_check")->setEnabled(false);
 
     LLComboBox* combo_sale_type = getChild<LLComboBox>("sale type");
     combo_sale_type->setValue(LLSaleInfo::FS_COPY);
-    combo_sale_type->setEnabled(FALSE);
+    combo_sale_type->setEnabled(false);
 
-    getChildView("Cost")->setEnabled(FALSE);
+    getChildView("Cost")->setEnabled(false);
     getChild<LLUICtrl>("Cost")->setValue(getString("Cost Default"));
     getChild<LLUICtrl>("Edit Cost")->setValue(LLStringUtil::null);
-    getChildView("Edit Cost")->setEnabled(FALSE);
+    getChildView("Edit Cost")->setEnabled(false);
 
-    getChildView("label click action")->setEnabled(FALSE);
+    getChildView("label click action")->setEnabled(false);
     LLComboBox* combo_click_action = getChild<LLComboBox>("clickaction");
     if (combo_click_action)
     {
-        combo_click_action->setEnabled(FALSE);
+        combo_click_action->setEnabled(false);
         combo_click_action->clear();
     }
-    getChildView("B:")->setVisible(FALSE);
-    getChildView("O:")->setVisible(FALSE);
-    getChildView("G:")->setVisible(FALSE);
-    getChildView("E:")->setVisible(FALSE);
-    getChildView("N:")->setVisible(FALSE);
-    getChildView("F:")->setVisible(FALSE);
+    getChildView("B:")->setVisible(false);
+    getChildView("O:")->setVisible(false);
+    getChildView("G:")->setVisible(false);
+    getChildView("E:")->setVisible(false);
+    getChildView("N:")->setVisible(false);
+    getChildView("F:")->setVisible(false);
 }
 
 void LLPanelPermissions::refresh()
@@ -306,17 +306,17 @@ void LLPanelPermissions::refresh()
         BtnDeedToGroup->setLabelSelected(deedText);
         BtnDeedToGroup->setLabelUnselected(deedText);
     }
-    BOOL root_selected = TRUE;
+    bool root_selected = true;
     LLSelectNode* nodep = LLSelectMgr::getInstance()->getSelection()->getFirstRootNode();
     S32 object_count = LLSelectMgr::getInstance()->getSelection()->getRootObjectCount();
     if(!nodep || 0 == object_count)
     {
         nodep = LLSelectMgr::getInstance()->getSelection()->getFirstNode();
         object_count = LLSelectMgr::getInstance()->getSelection()->getObjectCount();
-        root_selected = FALSE;
+        root_selected = false;
     }
 
-    //BOOL attachment_selected = LLSelectMgr::getInstance()->getSelection()->isAttachment();
+    //bool attachment_selected = LLSelectMgr::getInstance()->getSelection()->isAttachment();
     //attachment_selected = false;
     LLViewerObject* objectp = NULL;
     if(nodep) objectp = nodep->getObject();
@@ -328,13 +328,13 @@ void LLPanelPermissions::refresh()
     }
 
     // figure out a few variables
-    const BOOL is_one_object = (object_count == 1);
+    const bool is_one_object = (object_count == 1);
 
     // BUG: fails if a root and non-root are both single-selected.
-    BOOL is_perm_modify = (LLSelectMgr::getInstance()->getSelection()->getFirstRootNode()
+    bool is_perm_modify = (LLSelectMgr::getInstance()->getSelection()->getFirstRootNode()
                            && LLSelectMgr::getInstance()->selectGetRootsModify())
         || LLSelectMgr::getInstance()->selectGetModify();
-    BOOL is_nonpermanent_enforced = (LLSelectMgr::getInstance()->getSelection()->getFirstRootNode()
+    bool is_nonpermanent_enforced = (LLSelectMgr::getInstance()->getSelection()->getFirstRootNode()
                            && LLSelectMgr::getInstance()->selectGetRootsNonPermanentEnforced())
         || LLSelectMgr::getInstance()->selectGetNonPermanentEnforced();
     const LLFocusableElement* keyboard_focus_view = gFocusMgr.getKeyboardFocus();
@@ -361,7 +361,7 @@ void LLPanelPermissions::refresh()
     {
         ++string_index;
     }
-    getChildView("perm_modify")->setEnabled(TRUE);
+    getChildView("perm_modify")->setEnabled(true);
     getChild<LLUICtrl>("perm_modify")->setValue(MODIFY_INFO_STRINGS[string_index]);
 
     std::string pfAttrName;
@@ -389,11 +389,11 @@ void LLPanelPermissions::refresh()
         pfAttrName = "Pathfinding_Object_Attr_MultiSelect";
     }
 
-    getChildView("pathfinding_attributes_value")->setEnabled(TRUE);
+    getChildView("pathfinding_attributes_value")->setEnabled(true);
     getChild<LLUICtrl>("pathfinding_attributes_value")->setValue(LLTrans::getString(pfAttrName));
 
     // Update creator text field
-    getChildView("Creator:")->setEnabled(TRUE);
+    getChildView("Creator:")->setEnabled(true);
     std::string creator_app_link;
     LLSelectMgr::getInstance()->selectGetCreator(mCreatorID, creator_app_link);
 
@@ -424,14 +424,14 @@ void LLPanelPermissions::refresh()
         mCreatorCacheConnection = LLAvatarNameCache::get(mCreatorID, boost::bind(&LLPanelPermissions::updateCreatorName, this, _1, _2, style_params));
     }
     getChild<LLAvatarIconCtrl>("Creator Icon")->setValue(mCreatorID);
-    getChild<LLAvatarIconCtrl>("Creator Icon")->setVisible(TRUE);
-    mLabelCreatorName->setEnabled(TRUE);
+    getChild<LLAvatarIconCtrl>("Creator Icon")->setVisible(true);
+    mLabelCreatorName->setEnabled(true);
 
     // Update owner text field
-    getChildView("Owner:")->setEnabled(TRUE);
+    getChildView("Owner:")->setEnabled(true);
 
     std::string owner_app_link;
-    const BOOL owners_identical = LLSelectMgr::getInstance()->selectGetOwner(mOwnerID, owner_app_link);
+    const bool owners_identical = LLSelectMgr::getInstance()->selectGetOwner(mOwnerID, owner_app_link);
 
 
     if (LLSelectMgr::getInstance()->selectIsGroupOwned())
@@ -443,8 +443,8 @@ void LLPanelPermissions::refresh()
             style_params.link_href = owner_app_link;
             mLabelOwnerName->setText(group_data->mName, style_params);
             getChild<LLGroupIconCtrl>("Owner Group Icon")->setIconId(group_data->mInsigniaID);
-            getChild<LLGroupIconCtrl>("Owner Group Icon")->setVisible(TRUE);
-            getChild<LLUICtrl>("Owner Icon")->setVisible(FALSE);
+            getChild<LLGroupIconCtrl>("Owner Group Icon")->setVisible(true);
+            getChild<LLUICtrl>("Owner Icon")->setVisible(false);
         }
         else
         {
@@ -487,39 +487,39 @@ void LLPanelPermissions::refresh()
         }
 
         getChild<LLAvatarIconCtrl>("Owner Icon")->setValue(owner_id);
-        getChild<LLAvatarIconCtrl>("Owner Icon")->setVisible(TRUE);
-        getChild<LLUICtrl>("Owner Group Icon")->setVisible(FALSE);
+        getChild<LLAvatarIconCtrl>("Owner Icon")->setVisible(true);
+        getChild<LLUICtrl>("Owner Group Icon")->setVisible(false);
     }
-    mLabelOwnerName->setEnabled(TRUE);
+    mLabelOwnerName->setEnabled(true);
 
     // update group text field
-    getChildView("Group:")->setEnabled(TRUE);
+    getChildView("Group:")->setEnabled(true);
     getChild<LLUICtrl>("Group Name")->setValue(LLStringUtil::null);
     LLUUID group_id;
-    BOOL groups_identical = LLSelectMgr::getInstance()->selectGetGroup(group_id);
+    bool groups_identical = LLSelectMgr::getInstance()->selectGetGroup(group_id);
     if (groups_identical)
     {
         if (mLabelGroupName)
         {
-            mLabelGroupName->setNameID(group_id,TRUE);
-            mLabelGroupName->setEnabled(TRUE);
+            mLabelGroupName->setNameID(group_id,true);
+            mLabelGroupName->setEnabled(true);
         }
     }
     else
     {
         if (mLabelGroupName)
         {
-            mLabelGroupName->setNameID(LLUUID::null, TRUE);
+            mLabelGroupName->setNameID(LLUUID::null, true);
             mLabelGroupName->refresh(LLUUID::null, std::string(), true);
-            mLabelGroupName->setEnabled(FALSE);
+            mLabelGroupName->setEnabled(false);
         }
     }
 
     getChildView("button set group")->setEnabled(root_selected && owners_identical && (mOwnerID == gAgent.getID()) && is_nonpermanent_enforced);
 
-    getChildView("Name:")->setEnabled(TRUE);
+    getChildView("Name:")->setEnabled(true);
     LLLineEditor* LineEditorObjectName = getChild<LLLineEditor>("Object Name");
-    getChildView("Description:")->setEnabled(TRUE);
+    getChildView("Description:")->setEnabled(true);
     LLLineEditor* LineEditorObjectDesc = getChild<LLLineEditor>("Object Description");
 
     if (is_one_object)
@@ -544,44 +544,44 @@ void LLPanelPermissions::refresh()
     }
 
     // figure out the contents of the name, description, & category
-    BOOL edit_name_desc = FALSE;
+    bool edit_name_desc = false;
     if (is_one_object && objectp->permModify() && !objectp->isPermanentEnforced())
     {
-        edit_name_desc = TRUE;
+        edit_name_desc = true;
     }
     if (edit_name_desc)
     {
-        getChildView("Object Name")->setEnabled(TRUE);
-        getChildView("Object Description")->setEnabled(TRUE);
+        getChildView("Object Name")->setEnabled(true);
+        getChildView("Object Description")->setEnabled(true);
     }
     else
     {
-        getChildView("Object Name")->setEnabled(FALSE);
-        getChildView("Object Description")->setEnabled(FALSE);
+        getChildView("Object Name")->setEnabled(false);
+        getChildView("Object Description")->setEnabled(false);
     }
 
     S32 total_sale_price = 0;
     S32 individual_sale_price = 0;
-    BOOL is_for_sale_mixed = FALSE;
-    BOOL is_sale_price_mixed = FALSE;
-    U32 num_for_sale = FALSE;
+    bool is_for_sale_mixed = false;
+    bool is_sale_price_mixed = false;
+    U32 num_for_sale = false;
     LLSelectMgr::getInstance()->selectGetAggregateSaleInfo(num_for_sale,
                                                            is_for_sale_mixed,
                                                            is_sale_price_mixed,
                                                            total_sale_price,
                                                            individual_sale_price);
 
-    const BOOL self_owned = (gAgent.getID() == mOwnerID);
-    const BOOL group_owned = LLSelectMgr::getInstance()->selectIsGroupOwned() ;
-    const BOOL public_owned = (mOwnerID.isNull() && !LLSelectMgr::getInstance()->selectIsGroupOwned());
-    const BOOL can_transfer = LLSelectMgr::getInstance()->selectGetRootsTransfer();
-    const BOOL can_copy = LLSelectMgr::getInstance()->selectGetRootsCopy();
+    const bool self_owned = (gAgent.getID() == mOwnerID);
+    const bool group_owned = LLSelectMgr::getInstance()->selectIsGroupOwned() ;
+    const bool public_owned = (mOwnerID.isNull() && !LLSelectMgr::getInstance()->selectIsGroupOwned());
+    const bool can_transfer = LLSelectMgr::getInstance()->selectGetRootsTransfer();
+    const bool can_copy = LLSelectMgr::getInstance()->selectGetRootsCopy();
 
     if (!owners_identical)
     {
-        getChildView("Cost")->setEnabled(FALSE);
+        getChildView("Cost")->setEnabled(false);
         getChild<LLUICtrl>("Edit Cost")->setValue(LLStringUtil::null);
-        getChildView("Edit Cost")->setEnabled(FALSE);
+        getChildView("Edit Cost")->setEnabled(false);
     }
     // You own these objects.
     else if (self_owned || (group_owned && gAgent.hasPowerInGroup(group_id,GP_OBJECT_SET_SALE)))
@@ -603,11 +603,11 @@ void LLPanelPermissions::refresh()
             // set to the actual cost.
             if ((num_for_sale > 0) && is_for_sale_mixed)
             {
-                edit_price->setTentative(TRUE);
+                edit_price->setTentative(true);
             }
             else if ((num_for_sale > 0) && is_sale_price_mixed)
             {
-                edit_price->setTentative(TRUE);
+                edit_price->setTentative(true);
             }
             else
             {
@@ -616,15 +616,15 @@ void LLPanelPermissions::refresh()
         }
         // The edit fields are only enabled if you can sell this object
         // and the sale price is not mixed.
-        BOOL enable_edit = (num_for_sale && can_transfer) ? !is_for_sale_mixed : FALSE;
+        bool enable_edit = (num_for_sale && can_transfer) ? !is_for_sale_mixed : false;
         getChildView("Cost")->setEnabled(enable_edit);
         getChildView("Edit Cost")->setEnabled(enable_edit);
     }
     // Someone, not you, owns these objects.
     else if (!public_owned)
     {
-        getChildView("Cost")->setEnabled(FALSE);
-        getChildView("Edit Cost")->setEnabled(FALSE);
+        getChildView("Cost")->setEnabled(false);
+        getChildView("Edit Cost")->setEnabled(false);
 
         // Don't show a price if none of the items are for sale.
         if (num_for_sale)
@@ -641,11 +641,11 @@ void LLPanelPermissions::refresh()
     // This is a public object.
     else
     {
-        getChildView("Cost")->setEnabled(FALSE);
+        getChildView("Cost")->setEnabled(false);
         getChild<LLUICtrl>("Cost")->setValue(getString("Cost Default"));
 
         getChild<LLUICtrl>("Edit Cost")->setValue(LLStringUtil::null);
-        getChildView("Edit Cost")->setEnabled(FALSE);
+        getChildView("Edit Cost")->setEnabled(false);
     }
 
     // Enable and disable the permissions checkboxes
@@ -663,22 +663,22 @@ void LLPanelPermissions::refresh()
     U32 next_owner_mask_on      = 0;
     U32 next_owner_mask_off     = 0;
 
-    BOOL valid_base_perms       = LLSelectMgr::getInstance()->selectGetPerm(PERM_BASE,
+    bool valid_base_perms       = LLSelectMgr::getInstance()->selectGetPerm(PERM_BASE,
                                                                             &base_mask_on,
                                                                             &base_mask_off);
-    //BOOL valid_owner_perms =//
+    //bool valid_owner_perms =//
     LLSelectMgr::getInstance()->selectGetPerm(PERM_OWNER,
                                               &owner_mask_on,
                                               &owner_mask_off);
-    BOOL valid_group_perms      = LLSelectMgr::getInstance()->selectGetPerm(PERM_GROUP,
+    bool valid_group_perms      = LLSelectMgr::getInstance()->selectGetPerm(PERM_GROUP,
                                                                             &group_mask_on,
                                                                             &group_mask_off);
 
-    BOOL valid_everyone_perms   = LLSelectMgr::getInstance()->selectGetPerm(PERM_EVERYONE,
+    bool valid_everyone_perms   = LLSelectMgr::getInstance()->selectGetPerm(PERM_EVERYONE,
                                                                             &everyone_mask_on,
                                                                             &everyone_mask_off);
 
-    BOOL valid_next_perms       = LLSelectMgr::getInstance()->selectGetPerm(PERM_NEXT_OWNER,
+    bool valid_next_perms       = LLSelectMgr::getInstance()->selectGetPerm(PERM_NEXT_OWNER,
                                                                             &next_owner_mask_on,
                                                                             &next_owner_mask_off);
 
@@ -688,15 +688,15 @@ void LLPanelPermissions::refresh()
         if (valid_base_perms)
         {
             getChild<LLUICtrl>("B:")->setValue("B: " + mask_to_string(base_mask_on));
-            getChildView("B:")->setVisible(TRUE);
+            getChildView("B:")->setVisible(true);
             getChild<LLUICtrl>("O:")->setValue("O: " + mask_to_string(owner_mask_on));
-            getChildView("O:")->setVisible(TRUE);
+            getChildView("O:")->setVisible(true);
             getChild<LLUICtrl>("G:")->setValue("G: " + mask_to_string(group_mask_on));
-            getChildView("G:")->setVisible(TRUE);
+            getChildView("G:")->setVisible(true);
             getChild<LLUICtrl>("E:")->setValue("E: " + mask_to_string(everyone_mask_on));
-            getChildView("E:")->setVisible(TRUE);
+            getChildView("E:")->setVisible(true);
             getChild<LLUICtrl>("N:")->setValue("N: " + mask_to_string(next_owner_mask_on));
-            getChildView("N:")->setVisible(TRUE);
+            getChildView("N:")->setVisible(true);
         }
         else if(!root_selected)
         {
@@ -706,25 +706,25 @@ void LLPanelPermissions::refresh()
                 if (node && node->mValid)
                 {
                     getChild<LLUICtrl>("B:")->setValue("B: " + mask_to_string( node->mPermissions->getMaskBase()));
-                    getChildView("B:")->setVisible(TRUE);
+                    getChildView("B:")->setVisible(true);
                     getChild<LLUICtrl>("O:")->setValue("O: " + mask_to_string(node->mPermissions->getMaskOwner()));
-                    getChildView("O:")->setVisible(TRUE);
+                    getChildView("O:")->setVisible(true);
                     getChild<LLUICtrl>("G:")->setValue("G: " + mask_to_string(node->mPermissions->getMaskGroup()));
-                    getChildView("G:")->setVisible(TRUE);
+                    getChildView("G:")->setVisible(true);
                     getChild<LLUICtrl>("E:")->setValue("E: " + mask_to_string(node->mPermissions->getMaskEveryone()));
-                    getChildView("E:")->setVisible(TRUE);
+                    getChildView("E:")->setVisible(true);
                     getChild<LLUICtrl>("N:")->setValue("N: " + mask_to_string(node->mPermissions->getMaskNextOwner()));
-                    getChildView("N:")->setVisible(TRUE);
+                    getChildView("N:")->setVisible(true);
                 }
             }
         }
         else
         {
-            getChildView("B:")->setVisible(FALSE);
-            getChildView("O:")->setVisible(FALSE);
-            getChildView("G:")->setVisible(FALSE);
-            getChildView("E:")->setVisible(FALSE);
-            getChildView("N:")->setVisible(FALSE);
+            getChildView("B:")->setVisible(false);
+            getChildView("O:")->setVisible(false);
+            getChildView("G:")->setVisible(false);
+            getChildView("E:")->setVisible(false);
+            getChildView("N:")->setVisible(false);
         }
 
         U32 flag_mask = 0x0;
@@ -734,30 +734,30 @@ void LLPanelPermissions::refresh()
         if (objectp->permTransfer())    flag_mask |= PERM_TRANSFER;
 
         getChild<LLUICtrl>("F:")->setValue("F:" + mask_to_string(flag_mask));
-        getChildView("F:")->setVisible(                             TRUE);
+        getChildView("F:")->setVisible(                             true);
     }
     else
     {
-        getChildView("B:")->setVisible(                             FALSE);
-        getChildView("O:")->setVisible(                             FALSE);
-        getChildView("G:")->setVisible(                             FALSE);
-        getChildView("E:")->setVisible(                             FALSE);
-        getChildView("N:")->setVisible(                             FALSE);
-        getChildView("F:")->setVisible(                             FALSE);
+        getChildView("B:")->setVisible(                             false);
+        getChildView("O:")->setVisible(                             false);
+        getChildView("G:")->setVisible(                             false);
+        getChildView("E:")->setVisible(                             false);
+        getChildView("N:")->setVisible(                             false);
+        getChildView("F:")->setVisible(                             false);
     }
 
-    BOOL has_change_perm_ability = FALSE;
-    BOOL has_change_sale_ability = FALSE;
+    bool has_change_perm_ability = false;
+    bool has_change_sale_ability = false;
 
     if (valid_base_perms && is_nonpermanent_enforced &&
         (self_owned || (group_owned && gAgent.hasPowerInGroup(group_id, GP_OBJECT_MANIPULATE))))
     {
-        has_change_perm_ability = TRUE;
+        has_change_perm_ability = true;
     }
     if (valid_base_perms && is_nonpermanent_enforced &&
        (self_owned || (group_owned && gAgent.hasPowerInGroup(group_id, GP_OBJECT_SET_SALE))))
     {
-        has_change_sale_ability = TRUE;
+        has_change_sale_ability = true;
     }
 
     if (!has_change_perm_ability && !has_change_sale_ability && !root_selected)
@@ -768,15 +768,15 @@ void LLPanelPermissions::refresh()
 
     if (has_change_perm_ability)
     {
-        getChildView("checkbox share with group")->setEnabled(TRUE);
+        getChildView("checkbox share with group")->setEnabled(true);
         getChildView("checkbox allow everyone move")->setEnabled(owner_mask_on & PERM_MOVE);
         getChildView("checkbox allow everyone copy")->setEnabled(owner_mask_on & PERM_COPY && owner_mask_on & PERM_TRANSFER);
     }
     else
     {
-        getChildView("checkbox share with group")->setEnabled(FALSE);
-        getChildView("checkbox allow everyone move")->setEnabled(FALSE);
-        getChildView("checkbox allow everyone copy")->setEnabled(FALSE);
+        getChildView("checkbox share with group")->setEnabled(false);
+        getChildView("checkbox allow everyone move")->setEnabled(false);
+        getChildView("checkbox allow everyone copy")->setEnabled(false);
     }
 
     if (has_change_sale_ability && (owner_mask_on & PERM_TRANSFER))
@@ -787,39 +787,39 @@ void LLPanelPermissions::refresh()
         getChild<LLUICtrl>("checkbox for sale")->setTentative(              is_for_sale_mixed);
         getChildView("sale type")->setEnabled(num_for_sale && can_transfer && !is_sale_price_mixed);
 
-        getChildView("Next owner can:")->setEnabled(TRUE);
+        getChildView("Next owner can:")->setEnabled(true);
         getChildView("checkbox next owner can modify")->setEnabled(base_mask_on & PERM_MODIFY);
         getChildView("checkbox next owner can copy")->setEnabled(base_mask_on & PERM_COPY);
         getChildView("checkbox next owner can transfer")->setEnabled(next_owner_mask_on & PERM_COPY);
     }
     else
     {
-        getChildView("checkbox for sale")->setEnabled(FALSE);
-        getChildView("sale type")->setEnabled(FALSE);
+        getChildView("checkbox for sale")->setEnabled(false);
+        getChildView("sale type")->setEnabled(false);
 
-        getChildView("Next owner can:")->setEnabled(FALSE);
-        getChildView("checkbox next owner can modify")->setEnabled(FALSE);
-        getChildView("checkbox next owner can copy")->setEnabled(FALSE);
-        getChildView("checkbox next owner can transfer")->setEnabled(FALSE);
+        getChildView("Next owner can:")->setEnabled(false);
+        getChildView("checkbox next owner can modify")->setEnabled(false);
+        getChildView("checkbox next owner can copy")->setEnabled(false);
+        getChildView("checkbox next owner can transfer")->setEnabled(false);
     }
 
     if (valid_group_perms)
     {
         if ((group_mask_on & PERM_COPY) && (group_mask_on & PERM_MODIFY) && (group_mask_on & PERM_MOVE))
         {
-            getChild<LLUICtrl>("checkbox share with group")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox share with group")->setTentative(  FALSE);
+            getChild<LLUICtrl>("checkbox share with group")->setValue(true);
+            getChild<LLUICtrl>("checkbox share with group")->setTentative(  false);
             getChildView("button deed")->setEnabled(gAgent.hasPowerInGroup(group_id, GP_OBJECT_DEED) && (owner_mask_on & PERM_TRANSFER) && !group_owned && can_transfer);
         }
         else if ((group_mask_off & PERM_COPY) && (group_mask_off & PERM_MODIFY) && (group_mask_off & PERM_MOVE))
         {
-            getChild<LLUICtrl>("checkbox share with group")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox share with group")->setTentative(  FALSE);
-            getChildView("button deed")->setEnabled(FALSE);
+            getChild<LLUICtrl>("checkbox share with group")->setValue(false);
+            getChild<LLUICtrl>("checkbox share with group")->setTentative(  false);
+            getChildView("button deed")->setEnabled(false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox share with group")->setValue(TRUE);
+            getChild<LLUICtrl>("checkbox share with group")->setValue(true);
             getChild<LLUICtrl>("checkbox share with group")->setTentative(!has_change_perm_ability);
             getChildView("button deed")->setEnabled(gAgent.hasPowerInGroup(group_id, GP_OBJECT_DEED) && (group_mask_on & PERM_MOVE) && (owner_mask_on & PERM_TRANSFER) && !group_owned && can_transfer);
         }
@@ -830,35 +830,35 @@ void LLPanelPermissions::refresh()
         // Move
         if (everyone_mask_on & PERM_MOVE)
         {
-            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   FALSE);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(true);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   false);
         }
         else if (everyone_mask_off & PERM_MOVE)
         {
-            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   FALSE);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(false);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   TRUE);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(true);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   true);
         }
 
         // Copy == everyone can't copy
         if (everyone_mask_on & PERM_COPY)
         {
-            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(TRUE);
+            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(true);
             getChild<LLUICtrl>("checkbox allow everyone copy")->setTentative(   !can_copy || !can_transfer);
         }
         else if (everyone_mask_off & PERM_COPY)
         {
-            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox allow everyone copy")->setTentative(   FALSE);
+            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(false);
+            getChild<LLUICtrl>("checkbox allow everyone copy")->setTentative(   false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox allow everyone copy")->setTentative(   TRUE);
+            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(true);
+            getChild<LLUICtrl>("checkbox allow everyone copy")->setTentative(   true);
         }
     }
 
@@ -867,71 +867,71 @@ void LLPanelPermissions::refresh()
         // Modify == next owner canot modify
         if (next_owner_mask_on & PERM_MODIFY)
         {
-            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( FALSE);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(true);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( false);
         }
         else if (next_owner_mask_off & PERM_MODIFY)
         {
-            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( FALSE);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(false);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( TRUE);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(true);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( true);
         }
 
         // Copy == next owner cannot copy
         if (next_owner_mask_on & PERM_COPY)
         {
-            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(TRUE);
+            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(true);
             getChild<LLUICtrl>("checkbox next owner can copy")->setTentative(   !can_copy);
         }
         else if (next_owner_mask_off & PERM_COPY)
         {
-            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox next owner can copy")->setTentative(   FALSE);
+            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(false);
+            getChild<LLUICtrl>("checkbox next owner can copy")->setTentative(   false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox next owner can copy")->setTentative(   TRUE);
+            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(true);
+            getChild<LLUICtrl>("checkbox next owner can copy")->setTentative(   true);
         }
 
         // Transfer == next owner cannot transfer
         if (next_owner_mask_on & PERM_TRANSFER)
         {
-            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(TRUE);
+            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(true);
             getChild<LLUICtrl>("checkbox next owner can transfer")->setTentative( !can_transfer);
         }
         else if (next_owner_mask_off & PERM_TRANSFER)
         {
-            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox next owner can transfer")->setTentative( FALSE);
+            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(false);
+            getChild<LLUICtrl>("checkbox next owner can transfer")->setTentative( false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox next owner can transfer")->setTentative( TRUE);
+            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(true);
+            getChild<LLUICtrl>("checkbox next owner can transfer")->setTentative( true);
         }
     }
 
     // reflect sale information
     LLSaleInfo sale_info;
-    BOOL valid_sale_info = LLSelectMgr::getInstance()->selectGetSaleInfo(sale_info);
+    bool valid_sale_info = LLSelectMgr::getInstance()->selectGetSaleInfo(sale_info);
     LLSaleInfo::EForSale sale_type = sale_info.getSaleType();
 
     LLComboBox* combo_sale_type = getChild<LLComboBox>("sale type");
     if (valid_sale_info)
     {
         combo_sale_type->setValue(                  sale_type == LLSaleInfo::FS_NOT ? LLSaleInfo::FS_COPY : sale_type);
-        combo_sale_type->setTentative(              FALSE); // unfortunately this doesn't do anything at the moment.
+        combo_sale_type->setTentative(              false); // unfortunately this doesn't do anything at the moment.
     }
     else
     {
         // default option is sell copy, determined to be safest
         combo_sale_type->setValue(                  LLSaleInfo::FS_COPY);
-        combo_sale_type->setTentative(              TRUE); // unfortunately this doesn't do anything at the moment.
+        combo_sale_type->setTentative(              true); // unfortunately this doesn't do anything at the moment.
     }
 
     getChild<LLUICtrl>("checkbox for sale")->setValue((num_for_sale != 0));
@@ -949,9 +949,9 @@ void LLPanelPermissions::refresh()
     }
 
     // Check search status of objects
-    const BOOL all_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME );
+    const bool all_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME );
     bool include_in_search;
-    const BOOL all_include_in_search = LLSelectMgr::getInstance()->selectionGetIncludeInSearch(&include_in_search);
+    const bool all_include_in_search = LLSelectMgr::getInstance()->selectionGetIncludeInSearch(&include_in_search);
     getChildView("search_check")->setEnabled(has_change_sale_ability && all_volume);
     getChild<LLUICtrl>("search_check")->setValue(include_in_search);
     getChild<LLUICtrl>("search_check")->setTentative(               !all_include_in_search);
@@ -970,9 +970,9 @@ void LLPanelPermissions::refresh()
 
     if (LLSelectMgr::getInstance()->getSelection()->isAttachment())
     {
-        getChildView("checkbox for sale")->setEnabled(FALSE);
-        getChildView("Edit Cost")->setEnabled(FALSE);
-        getChild<LLComboBox>("sale type")->setEnabled(FALSE);
+        getChildView("checkbox for sale")->setEnabled(false);
+        getChildView("Edit Cost")->setEnabled(false);
+        getChild<LLComboBox>("sale type")->setEnabled(false);
     }
 
     getChildView("label click action")->setEnabled(is_perm_modify && is_nonpermanent_enforced  && all_volume);
@@ -986,7 +986,7 @@ void shorten_name(std::string &name, const LLStyle::Params& style_params, S32 ma
 
     LLWString wline = utf8str_to_wstring(name);
     // panel supports two lines long names
-    S32 segment_length = font->maxDrawableChars(wline.c_str(), max_pixels, wline.length(), LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
+    S32 segment_length = font->maxDrawableChars(wline.c_str(), max_pixels, static_cast<S32>(wline.length()), LLFontGL::WORD_BOUNDARY_IF_POSSIBLE);
     if (segment_length == wline.length())
     {
         // no work needed
@@ -994,7 +994,7 @@ void shorten_name(std::string &name, const LLStyle::Params& style_params, S32 ma
     }
 
     S32 first_line_length = segment_length;
-    segment_length = font->maxDrawableChars(wline.substr(first_line_length).c_str(), max_pixels, wline.length(), LLFontGL::ANYWHERE);
+    segment_length = font->maxDrawableChars(wline.substr(first_line_length).c_str(), max_pixels, static_cast<S32>(wline.length()), LLFontGL::ANYWHERE);
     if (segment_length + first_line_length == wline.length())
     {
         // no work needed
@@ -1004,7 +1004,7 @@ void shorten_name(std::string &name, const LLStyle::Params& style_params, S32 ma
     // name does not fit, cut it, add ...
     const LLWString dots_pad(utf8str_to_wstring(std::string("....")));
     S32 elipses_width = font->getWidthF32(dots_pad.c_str());
-    segment_length = font->maxDrawableChars(wline.substr(first_line_length).c_str(), max_pixels - elipses_width, wline.length(), LLFontGL::ANYWHERE);
+    segment_length = font->maxDrawableChars(wline.substr(first_line_length).c_str(), max_pixels - elipses_width, static_cast<S32>(wline.length()), LLFontGL::ANYWHERE);
 
     name = name.substr(0, segment_length + first_line_length) + std::string("...");
 }
@@ -1049,7 +1049,7 @@ void LLPanelPermissions::onClickGroup()
 {
     LLUUID owner_id;
     std::string name;
-    BOOL owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, name);
+    bool owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, name);
     LLFloater* parent_floater = gFloaterView->getParentFloater(this);
 
     if(owners_identical && (owner_id == gAgent.getID()))
@@ -1073,7 +1073,7 @@ void LLPanelPermissions::cbGroupID(LLUUID group_id)
 {
     if(mLabelGroupName)
     {
-        mLabelGroupName->setNameID(group_id, TRUE);
+        mLabelGroupName->setNameID(group_id, true);
     }
     LLSelectMgr::getInstance()->sendGroup(group_id);
 }
@@ -1084,10 +1084,10 @@ bool callback_deed_to_group(const LLSD& notification, const LLSD& response)
     if (0 == option)
     {
         LLUUID group_id;
-        BOOL groups_identical = LLSelectMgr::getInstance()->selectGetGroup(group_id);
+        bool groups_identical = LLSelectMgr::getInstance()->selectGetGroup(group_id);
         if(group_id.notNull() && groups_identical && (gAgent.hasPowerInGroup(group_id, GP_OBJECT_DEED)))
         {
-            LLSelectMgr::getInstance()->sendOwner(LLUUID::null, group_id, FALSE);
+            LLSelectMgr::getInstance()->sendOwner(LLUUID::null, group_id, false);
         }
     }
     return false;
@@ -1111,7 +1111,7 @@ void LLPanelPermissions::onCommitPerm(LLUICtrl *ctrl, void *data, U8 field, U32
     // Checkbox will have toggled itself
     // LLPanelPermissions* self = (LLPanelPermissions*)data;
     LLCheckBoxCtrl *check = (LLCheckBoxCtrl *)ctrl;
-    BOOL new_state = check->get();
+    bool new_state = check->get();
 
     LLSelectMgr::getInstance()->selectionSetObjectPermissions(field, new_state, perm);
 }
@@ -1175,7 +1175,7 @@ void LLPanelPermissions::onCommitName(LLUICtrl*, void* data)
         {
             LLPointer<LLViewerInventoryItem> new_item = new LLViewerInventoryItem(item);
             new_item->rename(tb->getText());
-            new_item->updateServer(FALSE);
+            new_item->updateServer(false);
             gInventory.updateItem(new_item);
             gInventory.notifyObservers();
         }
@@ -1202,7 +1202,7 @@ void LLPanelPermissions::onCommitDesc(LLUICtrl*, void* data)
         {
             LLPointer<LLViewerInventoryItem> new_item = new LLViewerInventoryItem(item);
             new_item->setDescription(le->getText());
-            new_item->updateServer(FALSE);
+            new_item->updateServer(false);
             gInventory.updateItem(new_item);
             gInventory.notifyObservers();
         }
@@ -1252,10 +1252,10 @@ void LLPanelPermissions::setAllSaleInfo()
     LLSelectMgr::getInstance()->selectionSetObjectSaleInfo(new_sale_info);
 
     // Note: won't work right if a root and non-root are both single-selected (here and other places).
-    BOOL is_perm_modify = (LLSelectMgr::getInstance()->getSelection()->getFirstRootNode()
+    bool is_perm_modify = (LLSelectMgr::getInstance()->getSelection()->getFirstRootNode()
                            && LLSelectMgr::getInstance()->selectGetRootsModify())
                           || LLSelectMgr::getInstance()->selectGetModify();
-    BOOL is_nonpermanent_enforced = (LLSelectMgr::getInstance()->getSelection()->getFirstRootNode()
+    bool is_nonpermanent_enforced = (LLSelectMgr::getInstance()->getSelection()->getFirstRootNode()
                                      && LLSelectMgr::getInstance()->selectGetRootsNonPermanentEnforced())
                                     || LLSelectMgr::getInstance()->selectGetNonPermanentEnforced();
 
diff --git a/indra/newview/llpanelpermissions.h b/indra/newview/llpanelpermissions.h
index 790ac9920d..77129434ed 100644
--- a/indra/newview/llpanelpermissions.h
+++ b/indra/newview/llpanelpermissions.h
@@ -48,7 +48,7 @@ public:
     LLPanelPermissions();
     virtual ~LLPanelPermissions();
 
-    /*virtual*/ BOOL    postBuild();
+    /*virtual*/ bool    postBuild();
     void updateOwnerName(const LLUUID& owner_id, const LLAvatarName& owner_name, const LLStyle::Params& style_params);
     void updateCreatorName(const LLUUID& creator_id, const LLAvatarName& creator_name, const LLStyle::Params& style_params);
     void refresh();                         // refresh all labels as needed
diff --git a/indra/newview/llpanelplaceinfo.cpp b/indra/newview/llpanelplaceinfo.cpp
index 8a9b2a7ec7..efce55907e 100644
--- a/indra/newview/llpanelplaceinfo.cpp
+++ b/indra/newview/llpanelplaceinfo.cpp
@@ -72,7 +72,7 @@ LLPanelPlaceInfo::~LLPanelPlaceInfo()
 }
 
 //virtual
-BOOL LLPanelPlaceInfo::postBuild()
+bool LLPanelPlaceInfo::postBuild()
 {
     mTitle = getChild<LLTextBox>("title");
     mCurrentTitle = mTitle->getText();
@@ -92,7 +92,7 @@ BOOL LLPanelPlaceInfo::postBuild()
     mScrollingPanelMinHeight = mScrollContainer->getScrolledViewRect().getHeight();
     mScrollingPanelWidth = mScrollingPanel->getRect().getWidth();
 
-    return TRUE;
+    return true;
 }
 
 //virtual
@@ -194,7 +194,7 @@ void LLPanelPlaceInfo::setErrorStatus(S32 status, const std::string& reason)
     mRegionTitle.clear();
 
     // Enable "Back" button that was disabled when parcel request was sent.
-    getChild<LLButton>("back_btn")->setEnabled(TRUE);
+    getChild<LLButton>("back_btn")->setEnabled(true);
 }
 
 // virtual
@@ -258,11 +258,11 @@ void LLPanelPlaceInfo::processParcelInfo(const LLParcelData& parcel_data)
 }
 
 // virtual
-void LLPanelPlaceInfo::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLPanelPlaceInfo::reshape(S32 width, S32 height, bool called_from_parent)
 {
 
     // This if was added to force collapsing description textbox on Windows at the beginning of reshape
-    // (the only case when reshape is skipped here is when it's caused by this textbox, so called_from_parent is FALSE)
+    // (the only case when reshape is skipped here is when it's caused by this textbox, so called_from_parent is false)
     // This way it is consistent with Linux where topLost collapses textbox at the beginning of reshape.
     // On windows it collapsed only after reshape which caused EXT-8342.
     if(called_from_parent)
diff --git a/indra/newview/llpanelplaceinfo.h b/indra/newview/llpanelplaceinfo.h
index 2dbc06dfc2..6e90603ce5 100644
--- a/indra/newview/llpanelplaceinfo.h
+++ b/indra/newview/llpanelplaceinfo.h
@@ -62,7 +62,7 @@ public:
     LLPanelPlaceInfo();
     /*virtual*/ ~LLPanelPlaceInfo();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     // Ignore all old location information, useful if you are
     // recycling an existing dialog and need to clear it.
@@ -89,7 +89,7 @@ public:
 
     /*virtual*/ void processParcelInfo(const LLParcelData& parcel_data);
 
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
 
     // Create a pick for the location specified
     // by global_pos.
diff --git a/indra/newview/llpanelplaceprofile.cpp b/indra/newview/llpanelplaceprofile.cpp
index 3cff72d42a..4ceeaa5d51 100644
--- a/indra/newview/llpanelplaceprofile.cpp
+++ b/indra/newview/llpanelplaceprofile.cpp
@@ -92,7 +92,7 @@ LLPanelPlaceProfile::~LLPanelPlaceProfile()
 }
 
 // virtual
-BOOL LLPanelPlaceProfile::postBuild()
+bool LLPanelPlaceProfile::postBuild()
 {
     LLPanelPlaceInfo::postBuild();
 
@@ -166,7 +166,7 @@ BOOL LLPanelPlaceProfile::postBuild()
     mLastSelectedRegionID = LLUUID::null;
     mNextCovenantUpdateTime = 0;
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -177,8 +177,8 @@ void LLPanelPlaceProfile::resetLocation()
     mLastSelectedRegionID = LLUUID::null;
     mNextCovenantUpdateTime = 0;
 
-    mForSalePanel->setVisible(FALSE);
-    mYouAreHerePanel->setVisible(FALSE);
+    mForSalePanel->setVisible(false);
+    mYouAreHerePanel->setVisible(false);
 
     std::string loading = LLTrans::getString("LoadingData");
 
@@ -222,7 +222,7 @@ void LLPanelPlaceProfile::resetLocation()
     mResaleText->setValue(loading);
     mSaleToText->setValue(loading);
 
-    getChild<LLAccordionCtrlTab>("sales_tab")->setVisible(TRUE);
+    getChild<LLAccordionCtrlTab>("sales_tab")->setVisible(true);
 }
 
 // virtual
@@ -312,7 +312,7 @@ void LLPanelPlaceProfile::processParcelInfo(const LLParcelData& parcel_data)
 }
 
 // virtual
-void LLPanelPlaceProfile::onVisibilityChange(BOOL new_visibility)
+void LLPanelPlaceProfile::onVisibilityChange(bool new_visibility)
 {
     LLPanel::onVisibilityChange(new_visibility);
 
@@ -540,7 +540,7 @@ void LLPanelPlaceProfile::displaySelectedParcelInfo(LLParcel* parcel,
     S32 claim_price;
     S32 rent_price;
     F32 dwell;
-    BOOL for_sale;
+    bool for_sale;
     vpm->getDisplayInfo(&area, &claim_price, &rent_price, &for_sale, &dwell);
     mForSalePanel->setVisible(for_sale);
     if (for_sale)
@@ -553,7 +553,7 @@ void LLPanelPlaceProfile::displaySelectedParcelInfo(LLParcel* parcel,
             // Show sales info to a specific person or a group he belongs to.
             if (auth_buyer_id != gAgent.getID() && !gAgent.isInGroup(auth_buyer_id))
             {
-                for_sale = FALSE;
+                for_sale = false;
             }
         }
         else
@@ -674,7 +674,7 @@ void LLPanelPlaceProfile::updateYouAreHereBanner(void* userdata)
     {
         static F32 radius = gSavedSettings.getF32("YouAreHereDistance");
 
-        BOOL display_banner = gAgent.getRegion()->getRegionID() == self->mLastSelectedRegionID &&
+        bool display_banner = gAgent.getRegion()->getRegionID() == self->mLastSelectedRegionID &&
                                         LLAgentUI::checkAgentDistance(self->mPosRegion, radius);
 
         self->mYouAreHerePanel->setVisible(display_banner);
diff --git a/indra/newview/llpanelplaceprofile.h b/indra/newview/llpanelplaceprofile.h
index e440ebc2e1..45a20fb86a 100644
--- a/indra/newview/llpanelplaceprofile.h
+++ b/indra/newview/llpanelplaceprofile.h
@@ -39,7 +39,7 @@ public:
     LLPanelPlaceProfile();
     /*virtual*/ ~LLPanelPlaceProfile();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     /*virtual*/ void resetLocation();
 
@@ -47,7 +47,7 @@ public:
 
     /*virtual*/ void processParcelInfo(const LLParcelData& parcel_data);
 
-    /*virtual*/ void onVisibilityChange(BOOL new_visibility);
+    /*virtual*/ void onVisibilityChange(bool new_visibility);
 
     // Displays information about the currently selected parcel
     // without sending a request to the server.
diff --git a/indra/newview/llpanelplaces.cpp b/indra/newview/llpanelplaces.cpp
index 67aa51e38a..7deb1d9fd4 100644
--- a/indra/newview/llpanelplaces.cpp
+++ b/indra/newview/llpanelplaces.cpp
@@ -108,7 +108,7 @@ public:
         }
 
         LLUUID parcel_id;
-        if (!parcel_id.set(params[0], FALSE))
+        if (!parcel_id.set(params[0], false))
         {
             return false;
         }
@@ -275,7 +275,7 @@ LLPanelPlaces::~LLPanelPlaces()
     }
 }
 
-BOOL LLPanelPlaces::postBuild()
+bool LLPanelPlaces::postBuild()
 {
     mTeleportBtn = getChild<LLButton>("teleport_btn");
     mTeleportBtn->setClickedCallback(boost::bind(&LLPanelPlaces::onTeleportButtonClicked, this));
@@ -309,7 +309,7 @@ BOOL LLPanelPlaces::postBuild()
 
     LLDragAndDropButton* trash_btn = (LLDragAndDropButton*)mRemoveSelectedBtn;
     trash_btn->setDragAndDropHandler(boost::bind(&LLPanelPlaces::handleDragAndDropToTrash, this
-        , _4 // BOOL drop
+        , _4 // bool drop
         , _5 // EDragAndDropType cargo_type
         , _6 // void* cargo_data
         , _7 // EAcceptance* accept
@@ -323,7 +323,7 @@ BOOL LLPanelPlaces::postBuild()
     mPlaceMenu = LLUICtrlFactory::getInstance()->createFromFile<LLToggleableMenu>("menu_place.xml", gMenuHolder, LLViewerMenuHolderGL::child_registry_t::instance());
     if (mPlaceMenu)
     {
-        mPlaceMenu->setAlwaysShowMenu(TRUE);
+        mPlaceMenu->setAlwaysShowMenu(true);
     }
     else
     {
@@ -343,7 +343,7 @@ BOOL LLPanelPlaces::postBuild()
     }
 
     mButtonsContainer = getChild<LLPanel>("button_layout_panel");
-    mButtonsContainer->setVisible(FALSE);
+    mButtonsContainer->setVisible(false);
     mFilterContainer = getChild<LLLayoutStack>("top_menu_panel");
 
     mFilterEditor = getChild<LLFilterEditor>("Filter");
@@ -360,7 +360,7 @@ BOOL LLPanelPlaces::postBuild()
     mPlaceProfile = findChild<LLPanelPlaceProfile>("panel_place_profile");
     mLandmarkInfo = findChild<LLPanelLandmarkInfo>("panel_landmark_info");
     if (!mPlaceProfile || !mLandmarkInfo)
-        return FALSE;
+        return false;
 
     mPlaceProfileBackBtn = mPlaceProfile->getChild<LLButton>("back_btn");
     mPlaceProfileBackBtn->setClickedCallback(boost::bind(&LLPanelPlaces::onBackButtonClicked, this));
@@ -382,7 +382,7 @@ BOOL LLPanelPlaces::postBuild()
     createTabs();
     updateVerbs();
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelPlaces::onOpen(const LLSD& key)
@@ -403,9 +403,9 @@ void LLPanelPlaces::onOpen(const LLSD& key)
             // The second toggle forces the list to be set to Landmark.
             // This avoids extracting and duplicating all the state logic from togglePlaceInfoPanel()
             // here or some specific private method
-            togglePlaceInfoPanel(FALSE);
+            togglePlaceInfoPanel(false);
             mPlaceInfoType = key_type;
-            togglePlaceInfoPanel(FALSE);
+            togglePlaceInfoPanel(false);
             // Update the active tab
             onTabSelected();
             // Update the buttons at the bottom of the panel
@@ -435,7 +435,7 @@ void LLPanelPlaces::onOpen(const LLSD& key)
             mPosGlobal.setZero();
             mItem = NULL;
             mRegionId.setNull();
-            togglePlaceInfoPanel(TRUE);
+            togglePlaceInfoPanel(true);
 
             if (mPlaceInfoType == AGENT_INFO_TYPE)
             {
@@ -463,7 +463,7 @@ void LLPanelPlaces::onOpen(const LLSD& key)
 
                 mLandmarkInfo->displayParcelInfo(LLUUID(), mPosGlobal);
 
-                mSaveBtn->setEnabled(FALSE);
+                mSaveBtn->setEnabled(false);
             }
             else if (mPlaceInfoType == LANDMARK_INFO_TYPE)
             {
@@ -474,7 +474,7 @@ void LLPanelPlaces::onOpen(const LLSD& key)
                 if (!item)
                     return;
 
-                BOOL is_editable = gInventory.isObjectDescendentOf(id, gInventory.getRootFolderID())
+                bool is_editable = gInventory.isObjectDescendentOf(id, gInventory.getRootFolderID())
                                    && item->getPermissions().allowModifyBy(gAgent.getID());
                 mLandmarkInfo->setCanEdit(is_editable);
 
@@ -574,7 +574,7 @@ void LLPanelPlaces::setItem(LLInventoryItem* item)
     }
 
     // Check if item is in agent's inventory and he has the permission to modify it.
-    BOOL is_landmark_editable = gInventory.isObjectDescendentOf(mItem->getUUID(), gInventory.getRootFolderID()) &&
+    bool is_landmark_editable = gInventory.isObjectDescendentOf(mItem->getUUID(), gInventory.getRootFolderID()) &&
                                 mItem->getPermissions().allowModifyBy(gAgent.getID());
 
     mSaveBtn->setEnabled(is_landmark_editable);
@@ -663,7 +663,7 @@ void LLPanelPlaces::onTabSelected()
     childSetVisible("add_btn_panel", supports_create);
 
     // favorites and inventory can remove items, history can clear history
-    childSetVisible("trash_btn_panel", TRUE);
+    childSetVisible("trash_btn_panel", true);
 
     if (supports_create)
     {
@@ -784,7 +784,7 @@ void LLPanelPlaces::onEditButtonClicked()
 
     isLandmarkEditModeOn = true;
 
-    mLandmarkInfo->toggleLandmarkEditMode(TRUE);
+    mLandmarkInfo->toggleLandmarkEditMode(true);
 
     updateVerbs();
 }
@@ -831,7 +831,7 @@ void LLPanelPlaces::onSaveButtonClicked()
         gInventory.accountForUpdate(update);
 
         new_item->setParent(folder_id);
-        new_item->updateParentOnServer(FALSE);
+        new_item->updateParentOnServer(false);
     }
 
     gInventory.updateItem(new_item);
@@ -851,7 +851,7 @@ void LLPanelPlaces::onCancelButtonClicked()
     }
     else
     {
-        mLandmarkInfo->toggleLandmarkEditMode(FALSE);
+        mLandmarkInfo->toggleLandmarkEditMode(false);
         isLandmarkEditModeOn = false;
 
         updateVerbs();
@@ -898,7 +898,7 @@ void LLPanelPlaces::onOverflowButtonClicked()
     {
         menu = mLandmarkMenu;
 
-        BOOL is_landmark_removable = FALSE;
+        bool is_landmark_removable = false;
         if (mItem.notNull())
         {
             const LLUUID& item_id = mItem->getUUID();
@@ -978,7 +978,7 @@ void LLPanelPlaces::onOverflowMenuItemClicked(const LLSD& param)
 
 void LLPanelPlaces::onBackButtonClicked()
 {
-    togglePlaceInfoPanel(FALSE);
+    togglePlaceInfoPanel(false);
 
     // Resetting mPlaceInfoType when Place Info panel is closed.
     mPlaceInfoType = LLStringUtil::null;
@@ -1023,7 +1023,7 @@ void LLPanelPlaces::onRemoveButtonClicked()
     }
 }
 
-bool LLPanelPlaces::handleDragAndDropToTrash(BOOL drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept)
+bool LLPanelPlaces::handleDragAndDropToTrash(bool drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept)
 {
     if (mActivePanel)
     {
@@ -1032,7 +1032,7 @@ bool LLPanelPlaces::handleDragAndDropToTrash(BOOL drop, EDragAndDropType cargo_t
     return false;
 }
 
-void LLPanelPlaces::togglePlaceInfoPanel(BOOL visible)
+void LLPanelPlaces::togglePlaceInfoPanel(bool visible)
 {
     if (!mPlaceProfile || !mLandmarkInfo)
         return;
@@ -1055,7 +1055,7 @@ void LLPanelPlaces::togglePlaceInfoPanel(BOOL visible)
             // to avoid text blinking.
             mResetInfoTimer.setTimerExpirySec(PLACE_INFO_UPDATE_INTERVAL);
 
-            mLandmarkInfo->setVisible(FALSE);
+            mLandmarkInfo->setVisible(false);
         }
         else if (mPlaceInfoType == AGENT_INFO_TYPE)
         {
@@ -1071,7 +1071,7 @@ void LLPanelPlaces::togglePlaceInfoPanel(BOOL visible)
              mPlaceInfoType == LANDMARK_TAB_INFO_TYPE)
     {
         mLandmarkInfo->setVisible(visible);
-        mPlaceProfile->setVisible(FALSE);
+        mPlaceProfile->setVisible(false);
         if (visible)
         {
             mLandmarkInfo->resetLocation();
@@ -1095,7 +1095,7 @@ void LLPanelPlaces::togglePlaceInfoPanel(BOOL visible)
                 mTabContainer->selectTabPanel(landmarks_panel);
                 if (mItem.notNull())
                 {
-                    landmarks_panel->setItemSelected(mItem->getUUID(), TRUE);
+                    landmarks_panel->setItemSelected(mItem->getUUID(), true);
                 }
                 else
                 {
@@ -1107,7 +1107,7 @@ void LLPanelPlaces::togglePlaceInfoPanel(BOOL visible)
 }
 
 // virtual
-void LLPanelPlaces::onVisibilityChange(BOOL new_visibility)
+void LLPanelPlaces::onVisibilityChange(bool new_visibility)
 {
     LLPanel::onVisibilityChange(new_visibility);
 
@@ -1213,7 +1213,7 @@ void LLPanelPlaces::createTabs()
         childSetVisible("add_btn_panel", supports_create);
 
         // favorites and inventory can remove items, history can clear history
-        childSetVisible("trash_btn_panel", TRUE);
+        childSetVisible("trash_btn_panel", true);
 
         if (supports_create)
         {
diff --git a/indra/newview/llpanelplaces.h b/indra/newview/llpanelplaces.h
index 1e76ad126f..fc04d8d45d 100644
--- a/indra/newview/llpanelplaces.h
+++ b/indra/newview/llpanelplaces.h
@@ -57,7 +57,7 @@ public:
     LLPanelPlaces();
     virtual ~LLPanelPlaces();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
     // Called on parcel selection change to update place information.
@@ -99,11 +99,11 @@ private:
     void onSortingMenuClick();
     void onAddMenuClick();
     void onRemoveButtonClicked();
-    bool handleDragAndDropToTrash(BOOL drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept);
+    bool handleDragAndDropToTrash(bool drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept);
 
-    void togglePlaceInfoPanel(BOOL visible);
+    void togglePlaceInfoPanel(bool visible);
 
-    /*virtual*/ void onVisibilityChange(BOOL new_visibility);
+    /*virtual*/ void onVisibilityChange(bool new_visibility);
 
     void updateVerbs();
 
diff --git a/indra/newview/llpanelplacestab.h b/indra/newview/llpanelplacestab.h
index b58cd2c3e2..90ad83550e 100644
--- a/indra/newview/llpanelplacestab.h
+++ b/indra/newview/llpanelplacestab.h
@@ -54,7 +54,7 @@ public:
     /**
     * Processes drag-n-drop of the Landmarks and folders into trash button.
     */
-    virtual bool handleDragAndDropToTrash(BOOL drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept) = 0;
+    virtual bool handleDragAndDropToTrash(bool drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept) = 0;
 
     bool isTabVisible(); // Check if parent TabContainer is visible.
 
diff --git a/indra/newview/llpanelpresetscamerapulldown.cpp b/indra/newview/llpanelpresetscamerapulldown.cpp
index 124a38bebb..5b0aa28223 100644
--- a/indra/newview/llpanelpresetscamerapulldown.cpp
+++ b/indra/newview/llpanelpresetscamerapulldown.cpp
@@ -54,7 +54,7 @@ LLPanelPresetsCameraPulldown::LLPanelPresetsCameraPulldown()
     buildFromFile( "panel_presets_camera_pulldown.xml");
 }
 
-BOOL LLPanelPresetsCameraPulldown::postBuild()
+bool LLPanelPresetsCameraPulldown::postBuild()
 {
     LLPresetsManager* presetsMgr = LLPresetsManager::getInstance();
     if (presetsMgr)
@@ -128,9 +128,9 @@ void LLPanelPresetsCameraPulldown::onRowClick(const LLSD& user_data)
             LLFloaterCamera::switchToPreset(name);
 
             // Scroll grabbed focus, drop it to prevent selection of parent menu
-            setFocus(FALSE);
+            setFocus(false);
 
-            setVisible(FALSE);
+            setVisible(false);
         }
         else
         {
@@ -146,7 +146,7 @@ void LLPanelPresetsCameraPulldown::onRowClick(const LLSD& user_data)
 void LLPanelPresetsCameraPulldown::onViewButtonClick(const LLSD& user_data)
 {
     // close the minicontrol, we're bringing up the big one
-    setVisible(FALSE);
+    setVisible(false);
 
     LLFloaterReg::toggleInstanceOrBringToFront("camera");
 }
diff --git a/indra/newview/llpanelpresetscamerapulldown.h b/indra/newview/llpanelpresetscamerapulldown.h
index 231a269436..9424a48eaa 100644
--- a/indra/newview/llpanelpresetscamerapulldown.h
+++ b/indra/newview/llpanelpresetscamerapulldown.h
@@ -35,7 +35,7 @@ class LLPanelPresetsCameraPulldown : public LLPanelPulldown
 {
  public:
     LLPanelPresetsCameraPulldown();
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
     void populatePanel();
 
  private:
diff --git a/indra/newview/llpanelpresetspulldown.cpp b/indra/newview/llpanelpresetspulldown.cpp
index 61331aad95..3b0f1273df 100644
--- a/indra/newview/llpanelpresetspulldown.cpp
+++ b/indra/newview/llpanelpresetspulldown.cpp
@@ -57,7 +57,7 @@ LLPanelPresetsPulldown::LLPanelPresetsPulldown()
     buildFromFile( "panel_presets_pulldown.xml");
 }
 
-BOOL LLPanelPresetsPulldown::postBuild()
+bool LLPanelPresetsPulldown::postBuild()
 {
     LLPresetsManager* presetsMgr = LLPresetsManager::getInstance();
     presetsMgr->setPresetListChangeCallback(boost::bind(&LLPanelPresetsPulldown::populatePanel, this));
@@ -125,9 +125,9 @@ void LLPanelPresetsPulldown::onRowClick(const LLSD& user_data)
             LLPresetsManager::getInstance()->loadPreset(PRESETS_GRAPHIC, name);
 
             // Scroll grabbed focus, drop it to prevent selection of parent menu
-            setFocus(FALSE);
+            setFocus(false);
 
-            setVisible(FALSE);
+            setVisible(false);
         }
         else
         {
@@ -143,7 +143,7 @@ void LLPanelPresetsPulldown::onRowClick(const LLSD& user_data)
 void LLPanelPresetsPulldown::onGraphicsButtonClick(const LLSD& user_data)
 {
     // close the minicontrol, we're bringing up the big one
-    setVisible(FALSE);
+    setVisible(false);
 
     // bring up the prefs floater
     LLFloater* prefsfloater = LLFloaterReg::showInstance("preferences");
@@ -162,7 +162,7 @@ void LLPanelPresetsPulldown::onGraphicsButtonClick(const LLSD& user_data)
 
 void LLPanelPresetsPulldown::onAutofpsButtonClick(const LLSD& user_data)
 {
-    setVisible(FALSE);
+    setVisible(false);
     LLFloaterPerformance* performance_floater = LLFloaterReg::showTypedInstance<LLFloaterPerformance>("performance");
     if (performance_floater)
     {
diff --git a/indra/newview/llpanelpresetspulldown.h b/indra/newview/llpanelpresetspulldown.h
index 9ecd5d66f0..b4d001a02e 100644
--- a/indra/newview/llpanelpresetspulldown.h
+++ b/indra/newview/llpanelpresetspulldown.h
@@ -36,7 +36,7 @@ class LLPanelPresetsPulldown : public LLPanelPulldown
 {
  public:
     LLPanelPresetsPulldown();
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
     void populatePanel();
 
  private:
diff --git a/indra/newview/llpanelprimmediacontrols.cpp b/indra/newview/llpanelprimmediacontrols.cpp
index 16cf46529d..1299c8c656 100644
--- a/indra/newview/llpanelprimmediacontrols.cpp
+++ b/indra/newview/llpanelprimmediacontrols.cpp
@@ -141,7 +141,7 @@ LLPanelPrimMediaControls::~LLPanelPrimMediaControls()
 {
 }
 
-BOOL LLPanelPrimMediaControls::postBuild()
+bool LLPanelPrimMediaControls::postBuild()
 {
     mMediaRegion            = getChild<LLView>("media_region");
     mBackCtrl               = getChild<LLUICtrl>("back");
@@ -223,8 +223,8 @@ BOOL LLPanelPrimMediaControls::postBuild()
 
     mCurrentZoom = ZOOM_NONE;
     // clicks on buttons do not remove keyboard focus from media
-    setIsChrome(TRUE);
-    return TRUE;
+    setIsChrome(true);
+    return true;
 }
 
 void LLPanelPrimMediaControls::setMediaFace(LLPointer<LLViewerObject> objectp, S32 face, viewer_media_t media_impl, LLVector3 pick_normal)
@@ -297,7 +297,7 @@ void LLPanelPrimMediaControls::updateShape()
 
     if(!media_impl || gFloaterTools->getVisible())
     {
-        setVisible(FALSE);
+        setVisible(false);
         return;
     }
 
@@ -443,17 +443,17 @@ void LLPanelPrimMediaControls::updateShape()
             switch(result)
             {
                 case LLPluginClassMediaOwner::MEDIA_PLAYING:
-                    mPlayCtrl->setEnabled(FALSE);
-                    mPlayCtrl->setVisible(FALSE);
-                    mPauseCtrl->setEnabled(TRUE);
+                    mPlayCtrl->setEnabled(false);
+                    mPlayCtrl->setVisible(false);
+                    mPauseCtrl->setEnabled(true);
                     mPauseCtrl->setVisible(has_focus);
 
                     break;
                 case LLPluginClassMediaOwner::MEDIA_PAUSED:
                 default:
-                    mPauseCtrl->setEnabled(FALSE);
-                    mPauseCtrl->setVisible(FALSE);
-                    mPlayCtrl->setEnabled(TRUE);
+                    mPauseCtrl->setEnabled(false);
+                    mPauseCtrl->setVisible(false);
+                    mPlayCtrl->setEnabled(true);
                     mPlayCtrl->setVisible(has_focus);
                     break;
             }
@@ -469,17 +469,17 @@ void LLPanelPrimMediaControls::updateShape()
                 mCurrentURL.clear();
             }
 
-            mPlayCtrl->setVisible(FALSE);
-            mPauseCtrl->setVisible(FALSE);
-            mMediaStopCtrl->setVisible(FALSE);
+            mPlayCtrl->setVisible(false);
+            mPauseCtrl->setVisible(false);
+            mMediaStopCtrl->setVisible(false);
             mMediaAddressCtrl->setVisible(has_focus && !mini_controls);
             mMediaAddressCtrl->setEnabled(has_focus && !mini_controls);
-            mMediaPlaySliderPanel->setVisible(FALSE);
-            mMediaPlaySliderPanel->setEnabled(FALSE);
-            mSkipFwdCtrl->setVisible(FALSE);
-            mSkipFwdCtrl->setEnabled(FALSE);
-            mSkipBackCtrl->setVisible(FALSE);
-            mSkipBackCtrl->setEnabled(FALSE);
+            mMediaPlaySliderPanel->setVisible(false);
+            mMediaPlaySliderPanel->setEnabled(false);
+            mSkipFwdCtrl->setVisible(false);
+            mSkipFwdCtrl->setEnabled(false);
+            mSkipBackCtrl->setVisible(false);
+            mSkipBackCtrl->setEnabled(false);
 
             if(media_impl->getVolume() <= 0.0)
             {
@@ -515,17 +515,17 @@ void LLPanelPrimMediaControls::updateShape()
 
             if(result == LLPluginClassMediaOwner::MEDIA_LOADING)
             {
-                mReloadCtrl->setEnabled(FALSE);
-                mReloadCtrl->setVisible(FALSE);
-                mStopCtrl->setEnabled(TRUE);
+                mReloadCtrl->setEnabled(false);
+                mReloadCtrl->setVisible(false);
+                mStopCtrl->setEnabled(true);
                 mStopCtrl->setVisible(has_focus);
             }
             else
             {
-                mReloadCtrl->setEnabled(TRUE);
+                mReloadCtrl->setEnabled(true);
                 mReloadCtrl->setVisible(has_focus);
-                mStopCtrl->setEnabled(FALSE);
-                mStopCtrl->setVisible(FALSE);
+                mStopCtrl->setEnabled(false);
+                mStopCtrl->setVisible(false);
             }
         }
 
@@ -741,7 +741,7 @@ void LLPanelPrimMediaControls::updateShape()
         else
         {
             // I don't think this is correct anymore.  This is done in draw() after the fade has completed.
-            //          setVisible(FALSE);
+            //          setVisible(false);
         }
     }
 }
@@ -834,10 +834,10 @@ void LLPanelPrimMediaControls::draw()
     }
 }
 
-BOOL LLPanelPrimMediaControls::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLPanelPrimMediaControls::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     mInactivityTimer.start();
-    BOOL res = FALSE;
+    bool res = false;
 
     // Unlike other mouse events, we need to handle scroll here otherwise
     // it will be intercepted by camera and won't reach toolpie
@@ -850,10 +850,10 @@ BOOL LLPanelPrimMediaControls::handleScrollWheel(S32 x, S32 y, S32 clicks)
     return res;
 }
 
-BOOL LLPanelPrimMediaControls::handleScrollHWheel(S32 x, S32 y, S32 clicks)
+bool LLPanelPrimMediaControls::handleScrollHWheel(S32 x, S32 y, S32 clicks)
 {
     mInactivityTimer.start();
-    BOOL res = FALSE;
+    bool res = false;
 
     if (LLViewerMediaFocus::getInstance()->isHoveringOverFocused())
     {
@@ -864,19 +864,19 @@ BOOL LLPanelPrimMediaControls::handleScrollHWheel(S32 x, S32 y, S32 clicks)
     return res;
 }
 
-BOOL LLPanelPrimMediaControls::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLPanelPrimMediaControls::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     mInactivityTimer.start();
     return LLPanel::handleMouseDown(x, y, mask);
 }
 
-BOOL LLPanelPrimMediaControls::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLPanelPrimMediaControls::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     mInactivityTimer.start();
     return LLPanel::handleMouseUp(x, y, mask);
 }
 
-BOOL LLPanelPrimMediaControls::handleKeyHere( KEY key, MASK mask )
+bool LLPanelPrimMediaControls::handleKeyHere( KEY key, MASK mask )
 {
     mInactivityTimer.start();
     return LLPanel::handleKeyHere(key, mask);
@@ -934,7 +934,7 @@ void LLPanelPrimMediaControls::close()
 {
     resetZoomLevel(true);
     LLViewerMediaFocus::getInstance()->clearFocus();
-    setVisible(FALSE);
+    setVisible(false);
 }
 
 
@@ -1120,7 +1120,7 @@ void LLPanelPrimMediaControls::updateZoom()
     {
     case ZOOM_NONE:
         {
-            gAgentCamera.setFocusOnAvatar(TRUE, ANIMATE);
+            gAgentCamera.setFocusOnAvatar(true, ANIMATE);
             break;
         }
     case ZOOM_FAR:
@@ -1140,7 +1140,7 @@ void LLPanelPrimMediaControls::updateZoom()
         }
     default:
         {
-            gAgentCamera.setFocusOnAvatar(TRUE, ANIMATE);
+            gAgentCamera.setFocusOnAvatar(true, ANIMATE);
             break;
         }
     }
@@ -1420,7 +1420,7 @@ void LLPanelPrimMediaControls::clearFaceOnFade()
         // Hiding this object makes scroll events go missing after it fades out
         // (see DEV-41755 for a full description of the train wreck).
         // Only hide the controls when we're untargeting.
-        setVisible(FALSE);
+        setVisible(false);
 
         mClearFaceOnFade = false;
         mVolumeSliderVisible = 0;
diff --git a/indra/newview/llpanelprimmediacontrols.h b/indra/newview/llpanelprimmediacontrols.h
index fa7cc81873..57c32e3a5f 100644
--- a/indra/newview/llpanelprimmediacontrols.h
+++ b/indra/newview/llpanelprimmediacontrols.h
@@ -46,14 +46,14 @@ class LLPanelPrimMediaControls : public LLPanel
 public:
     LLPanelPrimMediaControls();
     virtual ~LLPanelPrimMediaControls();
-    /*virtual*/ BOOL postBuild();
-    virtual void draw();
-    virtual BOOL handleScrollWheel(S32 x, S32 y, S32 clicks);
-    virtual BOOL handleScrollHWheel(S32 x, S32 y, S32 clicks);
-
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    bool postBuild() override;
+    void draw() override;
+    bool handleScrollWheel(S32 x, S32 y, S32 clicks) override;
+    bool handleScrollHWheel(S32 x, S32 y, S32 clicks) override;
+
+    bool handleMouseDown(S32 x, S32 y, MASK mask) override;
+    bool handleMouseUp(S32 x, S32 y, MASK mask) override;
+    bool handleKeyHere(KEY key, MASK mask) override;
 
     void updateShape();
     bool isMouseOver();
diff --git a/indra/newview/llpanelprofile.cpp b/indra/newview/llpanelprofile.cpp
index b272f2e868..3bec7abdaf 100644
--- a/indra/newview/llpanelprofile.cpp
+++ b/indra/newview/llpanelprofile.cpp
@@ -46,6 +46,7 @@
 #include "lltexteditor.h"
 #include "lltexturectrl.h"
 #include "lltoggleablemenu.h"
+#include "lltooldraganddrop.h"
 #include "llgrouplist.h"
 #include "llurlaction.h"
 
@@ -321,7 +322,7 @@ public:
     {
         if (params.size() < 2) return false;
         LLUUID avatar_id;
-        if (!avatar_id.set(params[0], FALSE))
+        if (!avatar_id.set(params[0], false))
         {
             return false;
         }
@@ -448,7 +449,7 @@ class LLFloaterProfilePermissions
 public:
     LLFloaterProfilePermissions(LLView * owner, const LLUUID &avatar_id);
     ~LLFloaterProfilePermissions();
-    BOOL postBuild() override;
+    bool postBuild() override;
     void onOpen(const LLSD& key) override;
     void draw() override;
     void changed(U32 mask) override; // LLFriendObserver
@@ -500,7 +501,7 @@ LLFloaterProfilePermissions::~LLFloaterProfilePermissions()
     }
 }
 
-BOOL LLFloaterProfilePermissions::postBuild()
+bool LLFloaterProfilePermissions::postBuild()
 {
     mDescription = getChild<LLTextBase>("perm_description");
     mOnlineStatus = getChild<LLCheckBoxCtrl>("online_check");
@@ -515,7 +516,7 @@ BOOL LLFloaterProfilePermissions::postBuild()
     mOkBtn->setCommitCallback([this](LLUICtrl*, void*) { onApplyRights(); }, nullptr);
     mCancelBtn->setCommitCallback([this](LLUICtrl*, void*) { onCancel(); }, nullptr);
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterProfilePermissions::onOpen(const LLSD& key)
@@ -566,11 +567,11 @@ void LLFloaterProfilePermissions::fillRightsData()
     {
         S32 rights = relation->getRightsGrantedTo();
 
-        BOOL see_online = LLRelationship::GRANT_ONLINE_STATUS & rights ? TRUE : FALSE;
+        bool see_online = LLRelationship::GRANT_ONLINE_STATUS & rights;
         mOnlineStatus->setValue(see_online);
         mMapRights->setEnabled(see_online);
-        mMapRights->setValue(LLRelationship::GRANT_MAP_LOCATION & rights ? TRUE : FALSE);
-        mEditObjectRights->setValue(LLRelationship::GRANT_MODIFY_OBJECTS & rights ? TRUE : FALSE);
+        mMapRights->setValue(LLRelationship::GRANT_MAP_LOCATION & rights);
+        mEditObjectRights->setValue(LLRelationship::GRANT_MODIFY_OBJECTS & rights);
     }
     else
     {
@@ -585,7 +586,7 @@ void LLFloaterProfilePermissions::rightsConfirmationCallback(const LLSD& notific
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
     if (option != 0) // canceled
     {
-        mEditObjectRights->setValue(mEditObjectRights->getValue().asBoolean() ? FALSE : TRUE);
+        mEditObjectRights->setValue(!mEditObjectRights->getValue().asBoolean());
     }
     else
     {
@@ -611,7 +612,7 @@ void LLFloaterProfilePermissions::onCommitSeeOnlineRights()
         if (relation)
         {
             S32 rights = relation->getRightsGrantedTo();
-            mMapRights->setValue(LLRelationship::GRANT_MAP_LOCATION & rights ? TRUE : FALSE);
+            mMapRights->setValue(LLRelationship::GRANT_MAP_LOCATION & rights);
         }
         else
         {
@@ -621,7 +622,7 @@ void LLFloaterProfilePermissions::onCommitSeeOnlineRights()
     }
     else
     {
-        mMapRights->setValue(FALSE);
+        mMapRights->setValue(false);
     }
     mHasUnsavedPermChanges = true;
 }
@@ -713,7 +714,7 @@ LLPanelProfileSecondLife::~LLPanelProfileSecondLife()
     }
 }
 
-BOOL LLPanelProfileSecondLife::postBuild()
+bool LLPanelProfileSecondLife::postBuild()
 {
     mGroupList              = getChild<LLGroupList>("group_list");
     mShowInSearchCombo      = getChild<LLComboBox>("show_in_search");
@@ -747,7 +748,7 @@ BOOL LLPanelProfileSecondLife::postBuild()
     mCantEditObjectsIcon->setMouseUpCallback([this](LLUICtrl*, S32 x, S32 y, MASK mask) { onShowAgentPermissionsDialog(); });
     mSecondLifePic->setMouseUpCallback([this](LLUICtrl*, S32 x, S32 y, MASK mask) { onShowAgentProfileTexture(); });
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelProfileSecondLife::onOpen(const LLSD& key)
@@ -758,7 +759,7 @@ void LLPanelProfileSecondLife::onOpen(const LLSD& key)
 
     LLUUID avatar_id = getAvatarId();
 
-    BOOL own_profile = getSelfProfile();
+    bool own_profile = getSelfProfile();
 
     mGroupList->setShowNone(!own_profile);
 
@@ -795,7 +796,7 @@ void LLPanelProfileSecondLife::onOpen(const LLSD& key)
 
     if (!own_profile)
     {
-        mVoiceStatus = LLAvatarActions::canCall() && (LLAvatarActions::isFriend(avatar_id) ? LLAvatarTracker::instance().isBuddyOnline(avatar_id) : TRUE);
+        mVoiceStatus = LLAvatarActions::canCall() && (LLAvatarActions::isFriend(avatar_id) ? LLAvatarTracker::instance().isBuddyOnline(avatar_id) : true);
         updateOnlineStatus();
         fillRightsData();
     }
@@ -803,6 +804,51 @@ void LLPanelProfileSecondLife::onOpen(const LLSD& key)
     mAvatarNameCacheConnection = LLAvatarNameCache::get(getAvatarId(), boost::bind(&LLPanelProfileSecondLife::onAvatarNameCache, this, _1, _2));
 }
 
+
+bool LLPanelProfileSecondLife::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
+                                          EDragAndDropType cargo_type,
+                                          void* cargo_data,
+                                          EAcceptance* accept,
+                                          std::string& tooltip_msg)
+{
+    // Try children first
+    if (LLPanelProfileTab::handleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data, accept, tooltip_msg)
+        && *accept != ACCEPT_NO)
+    {
+        return true;
+    }
+
+    // No point sharing with own profile
+    if (getSelfProfile())
+    {
+        return false;
+    }
+
+    // Exclude fields that look like they are editable.
+    S32 child_x = 0;
+    S32 child_y = 0;
+    if (localPointToOtherView(x, y, &child_x, &child_y, mDescriptionEdit)
+        && mDescriptionEdit->pointInView(child_x, child_y))
+    {
+        return false;
+    }
+
+    if (localPointToOtherView(x, y, &child_x, &child_y, mGroupList)
+        && mGroupList->pointInView(child_x, child_y))
+    {
+        return false;
+    }
+
+    // Share
+    LLToolDragAndDrop::handleGiveDragAndDrop(getAvatarId(),
+                                             LLUUID::null,
+                                             drop,
+                                             cargo_type,
+                                             cargo_data,
+                                             accept);
+    return true;
+}
+
 void LLPanelProfileSecondLife::refreshName()
 {
     if (!mAvatarNameCacheConnection.connected())
@@ -840,9 +886,9 @@ void LLPanelProfileSecondLife::resetData()
     mCanEditObjectsIcon->setEnabled(false);
     mCantEditObjectsIcon->setEnabled(false);
 
-    childSetVisible("partner_layout", FALSE);
-    childSetVisible("badge_layout", FALSE);
-    childSetVisible("partner_spacer_layout", TRUE);
+    childSetVisible("partner_layout", false);
+    childSetVisible("badge_layout", false);
+    childSetVisible("partner_spacer_layout", true);
 }
 
 void LLPanelProfileSecondLife::processProperties(void* data, EAvatarProcessorType type)
@@ -979,7 +1025,7 @@ void LLPanelProfileSecondLife::fillCommonData(const LLAvatarData* avatar_data)
     if (getSelfProfile())
     {
         mAllowPublish = avatar_data->flags & AVATAR_ALLOW_PUBLISH;
-        mShowInSearchCombo->setValue(mAllowPublish ? TRUE : FALSE);
+        mShowInSearchCombo->setValue(mAllowPublish);
     }
 }
 
@@ -988,7 +1034,7 @@ void LLPanelProfileSecondLife::fillPartnerData(const LLAvatarData* avatar_data)
     LLTextBox* partner_text_ctrl = getChild<LLTextBox>("partner_link");
     if (avatar_data->partner_id.notNull())
     {
-        childSetVisible("partner_layout", TRUE);
+        childSetVisible("partner_layout", true);
         LLStringUtil::format_map_t args;
         args["[LINK]"] = LLSLURL("agent", avatar_data->partner_id, "inspect").getSLURLString();
         std::string partner_text = getString("partner_text", args);
@@ -996,7 +1042,7 @@ void LLPanelProfileSecondLife::fillPartnerData(const LLAvatarData* avatar_data)
     }
     else
     {
-        childSetVisible("partner_layout", FALSE);
+        childSetVisible("partner_layout", false);
     }
 }
 
@@ -1018,48 +1064,48 @@ void LLPanelProfileSecondLife::fillAccountStatus(const LLAvatarData* avatar_data
     {
         getChild<LLUICtrl>("badge_icon")->setValue("Profile_Badge_Linden");
         getChild<LLUICtrl>("badge_text")->setValue(getString("BadgeLinden"));
-        childSetVisible("badge_layout", TRUE);
-        childSetVisible("partner_spacer_layout", FALSE);
+        childSetVisible("badge_layout", true);
+        childSetVisible("partner_spacer_layout", false);
     }
     else if (avatar_data->born_on < sl_release)
     {
         getChild<LLUICtrl>("badge_icon")->setValue("Profile_Badge_Beta");
         getChild<LLUICtrl>("badge_text")->setValue(getString("BadgeBeta"));
-        childSetVisible("badge_layout", TRUE);
-        childSetVisible("partner_spacer_layout", FALSE);
+        childSetVisible("badge_layout", true);
+        childSetVisible("partner_spacer_layout", false);
     }
     else if (customer_lower == "beta_lifetime")
     {
         getChild<LLUICtrl>("badge_icon")->setValue("Profile_Badge_Beta_Lifetime");
         getChild<LLUICtrl>("badge_text")->setValue(getString("BadgeBetaLifetime"));
-        childSetVisible("badge_layout", TRUE);
-        childSetVisible("partner_spacer_layout", FALSE);
+        childSetVisible("badge_layout", true);
+        childSetVisible("partner_spacer_layout", false);
     }
     else if (customer_lower == "lifetime")
     {
         getChild<LLUICtrl>("badge_icon")->setValue("Profile_Badge_Lifetime");
         getChild<LLUICtrl>("badge_text")->setValue(getString("BadgeLifetime"));
-        childSetVisible("badge_layout", TRUE);
-        childSetVisible("partner_spacer_layout", FALSE);
+        childSetVisible("badge_layout", true);
+        childSetVisible("partner_spacer_layout", false);
     }
     else if (customer_lower == "secondlifetime_premium")
     {
         getChild<LLUICtrl>("badge_icon")->setValue("Profile_Badge_Premium_Lifetime");
         getChild<LLUICtrl>("badge_text")->setValue(getString("BadgePremiumLifetime"));
-        childSetVisible("badge_layout", TRUE);
-        childSetVisible("partner_spacer_layout", FALSE);
+        childSetVisible("badge_layout", true);
+        childSetVisible("partner_spacer_layout", false);
     }
     else if (customer_lower == "secondlifetime_premium_plus")
     {
         getChild<LLUICtrl>("badge_icon")->setValue("Profile_Badge_Pplus_Lifetime");
         getChild<LLUICtrl>("badge_text")->setValue(getString("BadgePremiumPlusLifetime"));
-        childSetVisible("badge_layout", TRUE);
-        childSetVisible("partner_spacer_layout", FALSE);
+        childSetVisible("badge_layout", true);
+        childSetVisible("partner_spacer_layout", false);
     }
     else
     {
-        childSetVisible("badge_layout", FALSE);
-        childSetVisible("partner_spacer_layout", TRUE);
+        childSetVisible("badge_layout", false);
+        childSetVisible("partner_spacer_layout", true);
     }
 }
 
@@ -1118,7 +1164,7 @@ void LLPanelProfileSecondLife::fillAgeData(const LLAvatarData* avatar_data)
     LLUICtrl* userAgeCtrl = getChild<LLUICtrl>("user_age");
     if (hide_age)
     {
-        userAgeCtrl->setVisible(FALSE);
+        userAgeCtrl->setVisible(false);
     }
     else
     {
@@ -1129,7 +1175,7 @@ void LLPanelProfileSecondLife::fillAgeData(const LLAvatarData* avatar_data)
         userAgeCtrl->setValue(register_date);
     }
 
-    BOOL showHideAgeCombo = FALSE;
+    bool showHideAgeCombo = false;
     if (getSelfProfile())
     {
         if (LLAvatarPropertiesProcessor::getInstance()->isHideAgeSupportedByServer())
@@ -1139,15 +1185,15 @@ void LLPanelProfileSecondLife::fillAgeData(const LLAvatarData* avatar_data)
             if (now - birth > 365 * 24 * 60 * 60)
             {
                 mHideAge = avatar_data->hide_age;
-                mHideAgeCombo->setValue(mHideAge ? TRUE : FALSE);
-                showHideAgeCombo = TRUE;
+                mHideAgeCombo->setValue(mHideAge);
+                showHideAgeCombo = true;
             }
         }
     }
     mHideAgeCombo->setVisible(showHideAgeCombo);
 }
 
-void LLPanelProfileSecondLife::onImageLoaded(BOOL success, LLViewerFetchedTexture *imagep)
+void LLPanelProfileSecondLife::onImageLoaded(bool success, LLViewerFetchedTexture *imagep)
 {
     LLRect imageRect = mSecondLifePicLayout->getRect();
     if (!success || imagep->getFullWidth() == imagep->getFullHeight())
@@ -1179,7 +1225,7 @@ void LLPanelProfileSecondLife::onChange(EStatusType status, const LLSD& channelI
         return;
     }
 
-    mVoiceStatus = LLAvatarActions::canCall() && (LLAvatarActions::isFriend(getAvatarId()) ? LLAvatarTracker::instance().isBuddyOnline(getAvatarId()) : TRUE);
+    mVoiceStatus = LLAvatarActions::canCall() && (LLAvatarActions::isFriend(getAvatarId()) ? LLAvatarTracker::instance().isBuddyOnline(getAvatarId()) : true);
 }
 
 void LLPanelProfileSecondLife::setAvatarId(const LLUUID& avatar_id)
@@ -1232,12 +1278,12 @@ void LLPanelProfileSecondLife::setLoaded()
 
     if (getSelfProfile())
     {
-        mShowInSearchCombo->setEnabled(TRUE);
+        mShowInSearchCombo->setEnabled(true);
         if (mHideAgeCombo->getVisible())
         {
-            mHideAgeCombo->setEnabled(TRUE);
+            mHideAgeCombo->setEnabled(true);
         }
-        mDescriptionEdit->setEnabled(TRUE);
+        mDescriptionEdit->setEnabled(true);
     }
 }
 
@@ -1384,7 +1430,7 @@ void LLPanelProfileSecondLife::onCommitMenu(const LLSD& userdata)
     else if (item_name == "copy_user_id")
     {
         LLWString wstr = utf8str_to_wstring(getAvatarId().asString());
-        LLClipboard::instance().copyToClipboard(wstr, 0, wstr.size());
+        LLClipboard::instance().copyToClipboard(wstr, 0, static_cast<S32>(wstr.size()));
     }
     else if (item_name == "copy_profile_link")
     {
@@ -1414,7 +1460,7 @@ void LLPanelProfileSecondLife::onCommitMenu(const LLSD& userdata)
         {
             wstr = utf8str_to_wstring(av_name.getUserName());
         }
-        LLClipboard::instance().copyToClipboard(wstr, 0, wstr.size());
+        LLClipboard::instance().copyToClipboard(wstr, 0, static_cast<S32>(wstr.size()));
     }
     else if (item_name == "edit_display_name")
     {
@@ -1552,8 +1598,8 @@ void LLPanelProfileSecondLife::onAvatarNameCacheSetName(const LLUUID& agent_id,
 
 void LLPanelProfileSecondLife::setDescriptionText(const std::string &text)
 {
-    mSaveDescriptionChanges->setEnabled(FALSE);
-    mDiscardDescriptionChanges->setEnabled(FALSE);
+    mSaveDescriptionChanges->setEnabled(false);
+    mDiscardDescriptionChanges->setEnabled(false);
     mHasUnsavedDescriptionChanges = false;
 
     mDescriptionText = text;
@@ -1562,8 +1608,8 @@ void LLPanelProfileSecondLife::setDescriptionText(const std::string &text)
 
 void LLPanelProfileSecondLife::onSetDescriptionDirty()
 {
-    mSaveDescriptionChanges->setEnabled(TRUE);
-    mDiscardDescriptionChanges->setEnabled(TRUE);
+    mSaveDescriptionChanges->setEnabled(true);
+    mDiscardDescriptionChanges->setEnabled(true);
     mHasUnsavedDescriptionChanges = true;
 }
 
@@ -1592,8 +1638,8 @@ void LLPanelProfileSecondLife::onSaveDescriptionChanges()
     mDescriptionText = mDescriptionEdit->getValue().asString();
     saveAgentUserInfoCoro("sl_about_text", mDescriptionText);
 
-    mSaveDescriptionChanges->setEnabled(FALSE);
-    mDiscardDescriptionChanges->setEnabled(FALSE);
+    mSaveDescriptionChanges->setEnabled(false);
+    mDiscardDescriptionChanges->setEnabled(false);
     mHasUnsavedDescriptionChanges = false;
 }
 
@@ -1613,15 +1659,15 @@ void LLPanelProfileSecondLife::onShowAgentPermissionsDialog()
             LLFloaterProfilePermissions * perms = new LLFloaterProfilePermissions(parent_floater, getAvatarId());
             mFloaterPermissionsHandle = perms->getHandle();
             perms->openFloater();
-            perms->setVisibleAndFrontmost(TRUE);
+            perms->setVisibleAndFrontmost(true);
 
             parent_floater->addDependentFloater(mFloaterPermissionsHandle);
         }
     }
     else // already open
     {
-        floater->setMinimized(FALSE);
-        floater->setVisibleAndFrontmost(TRUE);
+        floater->setMinimized(false);
+        floater->setVisibleAndFrontmost(true);
     }
 }
 
@@ -1649,7 +1695,7 @@ void LLPanelProfileSecondLife::onShowAgentProfileTexture()
                 texture_view->resetAsset();
             }
             texture_view->openFloater();
-            texture_view->setVisibleAndFrontmost(TRUE);
+            texture_view->setVisibleAndFrontmost(true);
 
             parent_floater->addDependentFloater(mFloaterProfileTextureHandle);
         }
@@ -1657,8 +1703,8 @@ void LLPanelProfileSecondLife::onShowAgentProfileTexture()
     else // already open
     {
         LLFloaterProfileTexture * texture_view = dynamic_cast<LLFloaterProfileTexture*>(floater);
-        texture_view->setMinimized(FALSE);
-        texture_view->setVisibleAndFrontmost(TRUE);
+        texture_view->setMinimized(false);
+        texture_view->setVisibleAndFrontmost(true);
         if (mSecondLifePic->getImageAssetId().notNull())
         {
             texture_view->loadAsset(mSecondLifePic->getImageAssetId());
@@ -1687,12 +1733,12 @@ void LLPanelProfileSecondLife::onShowTexturePicker()
                 mSecondLifePic->getImageAssetId(),
                 LLUUID::null,
                 mSecondLifePic->getImageAssetId(),
-                FALSE,
-                FALSE,
+                false,
+                false,
                 "SELECT PHOTO",
                 PERM_NONE,
                 PERM_NONE,
-                FALSE,
+                false,
                 NULL,
                 PICK_TEXTURE);
 
@@ -1705,20 +1751,20 @@ void LLPanelProfileSecondLife::onShowTexturePicker()
                     onCommitProfileImage(asset_id);
                 }
             });
-            texture_floaterp->setLocalTextureEnabled(FALSE);
-            texture_floaterp->setBakeTextureEnabled(FALSE);
+            texture_floaterp->setLocalTextureEnabled(false);
+            texture_floaterp->setBakeTextureEnabled(false);
             texture_floaterp->setCanApply(false, true, false);
 
             parent_floater->addDependentFloater(mFloaterTexturePickerHandle);
 
             texture_floaterp->openFloater();
-            texture_floaterp->setFocus(TRUE);
+            texture_floaterp->setFocus(true);
         }
     }
     else
     {
-        floaterp->setMinimized(FALSE);
-        floaterp->setVisibleAndFrontmost(TRUE);
+        floaterp->setMinimized(false);
+        floaterp->setVisibleAndFrontmost(true);
     }
 }
 
@@ -1784,13 +1830,13 @@ void LLPanelProfileWeb::onOpen(const LLSD& key)
     mAvatarNameCacheConnection = LLAvatarNameCache::get(getAvatarId(), boost::bind(&LLPanelProfileWeb::onAvatarNameCache, this, _1, _2));
 }
 
-BOOL LLPanelProfileWeb::postBuild()
+bool LLPanelProfileWeb::postBuild()
 {
     mWebBrowser = getChild<LLMediaCtrl>("profile_html");
     mWebBrowser->addObserver(this);
     mWebBrowser->setHomePageUrl("about:blank");
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelProfileWeb::resetData()
@@ -1805,7 +1851,7 @@ void LLPanelProfileWeb::updateData()
     {
         setIsLoading();
 
-        mWebBrowser->setVisible(TRUE);
+        mWebBrowser->setVisible(true);
         mPerformanceTimer.start();
         mWebBrowser->navigateTo(mURLWebProfile, HTTP_CONTENT_TEXT_HTML);
     }
@@ -1842,7 +1888,7 @@ void LLPanelProfileWeb::onCommitLoad(LLUICtrl* ctrl)
         LLSD::String valstr = ctrl->getValue().asString();
         if (valstr.empty())
         {
-            mWebBrowser->setVisible(TRUE);
+            mWebBrowser->setVisible(true);
             mPerformanceTimer.start();
             mWebBrowser->navigateTo( mURLHome, HTTP_CONTENT_TEXT_HTML );
         }
@@ -1911,7 +1957,7 @@ LLPanelProfileFirstLife::~LLPanelProfileFirstLife()
 {
 }
 
-BOOL LLPanelProfileFirstLife::postBuild()
+bool LLPanelProfileFirstLife::postBuild()
 {
     mDescriptionEdit = getChild<LLTextEditor>("fl_description_edit");
     mPicture = getChild<LLProfileImageCtrl>("real_world_pic");
@@ -1929,7 +1975,7 @@ BOOL LLPanelProfileFirstLife::postBuild()
     mDiscardChanges->setCommitCallback([this](LLUICtrl*, void*) { onDiscardDescriptionChanges(); }, nullptr);
     mDescriptionEdit->setKeystrokeCallback([this](LLTextEditor* caller) { onSetDescriptionDirty(); });
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelProfileFirstLife::onOpen(const LLSD& key)
@@ -1939,7 +1985,7 @@ void LLPanelProfileFirstLife::onOpen(const LLSD& key)
     if (!getSelfProfile())
     {
         // Otherwise as the only focusable element it will be selected
-        mDescriptionEdit->setTabStop(FALSE);
+        mDescriptionEdit->setTabStop(false);
     }
 
     resetData();
@@ -2005,12 +2051,12 @@ void LLPanelProfileFirstLife::onChangePhoto()
                 mPicture->getImageAssetId(),
                 LLUUID::null,
                 mPicture->getImageAssetId(),
-                FALSE,
-                FALSE,
+                false,
+                false,
                 "SELECT PHOTO",
                 PERM_NONE,
                 PERM_NONE,
-                FALSE,
+                false,
                 NULL,
                 PICK_TEXTURE);
 
@@ -2023,19 +2069,19 @@ void LLPanelProfileFirstLife::onChangePhoto()
                     onCommitPhoto(asset_id);
                 }
             });
-            texture_floaterp->setLocalTextureEnabled(FALSE);
+            texture_floaterp->setLocalTextureEnabled(false);
             texture_floaterp->setCanApply(false, true, false);
 
             parent_floater->addDependentFloater(mFloaterTexturePickerHandle);
 
             texture_floaterp->openFloater();
-            texture_floaterp->setFocus(TRUE);
+            texture_floaterp->setFocus(true);
         }
     }
     else
     {
-        floaterp->setMinimized(FALSE);
-        floaterp->setVisibleAndFrontmost(TRUE);
+        floaterp->setMinimized(false);
+        floaterp->setVisibleAndFrontmost(true);
     }
 }
 
@@ -2065,8 +2111,8 @@ void LLPanelProfileFirstLife::onCommitPhoto(const LLUUID& id)
 
 void LLPanelProfileFirstLife::setDescriptionText(const std::string &text)
 {
-    mSaveChanges->setEnabled(FALSE);
-    mDiscardChanges->setEnabled(FALSE);
+    mSaveChanges->setEnabled(false);
+    mDiscardChanges->setEnabled(false);
     mHasUnsavedChanges = false;
 
     mCurrentDescription = text;
@@ -2075,8 +2121,8 @@ void LLPanelProfileFirstLife::setDescriptionText(const std::string &text)
 
 void LLPanelProfileFirstLife::onSetDescriptionDirty()
 {
-    mSaveChanges->setEnabled(TRUE);
-    mDiscardChanges->setEnabled(TRUE);
+    mSaveChanges->setEnabled(true);
+    mDiscardChanges->setEnabled(true);
     mHasUnsavedChanges = true;
 }
 
@@ -2085,8 +2131,8 @@ void LLPanelProfileFirstLife::onSaveDescriptionChanges()
     mCurrentDescription = mDescriptionEdit->getValue().asString();
     saveAgentUserInfoCoro("fl_about_text", mCurrentDescription);
 
-    mSaveChanges->setEnabled(FALSE);
-    mDiscardChanges->setEnabled(FALSE);
+    mSaveChanges->setEnabled(false);
+    mDiscardChanges->setEnabled(false);
     mHasUnsavedChanges = false;
 }
 
@@ -2134,8 +2180,8 @@ void LLPanelProfileFirstLife::setLoaded()
 
     if (getSelfProfile())
     {
-        mDescriptionEdit->setEnabled(TRUE);
-        mPicture->setEnabled(TRUE);
+        mDescriptionEdit->setEnabled(true);
+        mPicture->setEnabled(true);
         mRemovePhoto->setEnabled(mPicture->getImageAssetId().notNull());
     }
 }
@@ -2163,7 +2209,7 @@ void LLPanelProfileNotes::commitUnsavedChanges()
     }
 }
 
-BOOL LLPanelProfileNotes::postBuild()
+bool LLPanelProfileNotes::postBuild()
 {
     mNotesEditor = getChild<LLTextEditor>("notes_edit");
     mSaveChanges = getChild<LLButton>("notes_save_changes");
@@ -2173,7 +2219,7 @@ BOOL LLPanelProfileNotes::postBuild()
     mDiscardChanges->setCommitCallback([this](LLUICtrl*, void*) { onDiscardNotesChanges(); }, nullptr);
     mNotesEditor->setKeystrokeCallback([this](LLTextEditor* caller) { onSetNotesDirty(); });
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelProfileNotes::onOpen(const LLSD& key)
@@ -2185,8 +2231,8 @@ void LLPanelProfileNotes::onOpen(const LLSD& key)
 
 void LLPanelProfileNotes::setNotesText(const std::string &text)
 {
-    mSaveChanges->setEnabled(FALSE);
-    mDiscardChanges->setEnabled(FALSE);
+    mSaveChanges->setEnabled(false);
+    mDiscardChanges->setEnabled(false);
     mHasUnsavedChanges = false;
 
     mCurrentNotes = text;
@@ -2195,8 +2241,8 @@ void LLPanelProfileNotes::setNotesText(const std::string &text)
 
 void LLPanelProfileNotes::onSetNotesDirty()
 {
-    mSaveChanges->setEnabled(TRUE);
-    mDiscardChanges->setEnabled(TRUE);
+    mSaveChanges->setEnabled(true);
+    mDiscardChanges->setEnabled(true);
     mHasUnsavedChanges = true;
 }
 
@@ -2205,8 +2251,8 @@ void LLPanelProfileNotes::onSaveNotesChanges()
     mCurrentNotes = mNotesEditor->getValue().asString();
     saveAgentUserInfoCoro("notes", mCurrentNotes);
 
-    mSaveChanges->setEnabled(FALSE);
-    mDiscardChanges->setEnabled(FALSE);
+    mSaveChanges->setEnabled(false);
+    mDiscardChanges->setEnabled(false);
     mHasUnsavedChanges = false;
 }
 
@@ -2230,7 +2276,7 @@ void LLPanelProfileNotes::processProperties(void* data, EAvatarProcessorType typ
 void LLPanelProfileNotes::processProperties(const LLAvatarData* avatar_data)
 {
     setNotesText(avatar_data->notes);
-    mNotesEditor->setEnabled(TRUE);
+    mNotesEditor->setEnabled(true);
     setLoaded();
 }
 
@@ -2253,9 +2299,9 @@ LLPanelProfile::~LLPanelProfile()
 {
 }
 
-BOOL LLPanelProfile::postBuild()
+bool LLPanelProfile::postBuild()
 {
-    return TRUE;
+    return true;
 }
 
 void LLPanelProfile::onTabChange()
diff --git a/indra/newview/llpanelprofile.h b/indra/newview/llpanelprofile.h
index f0c0565628..c207a4162a 100644
--- a/indra/newview/llpanelprofile.h
+++ b/indra/newview/llpanelprofile.h
@@ -78,6 +78,12 @@ public:
 
     void onOpen(const LLSD& key) override;
 
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
+                                   EDragAndDropType cargo_type,
+                                   void* cargo_data,
+                                   EAcceptance* accept,
+                                   std::string& tooltip_msg) override;
+
     /**
      * LLFriendObserver trigger
      */
@@ -89,7 +95,7 @@ public:
 
     void setAvatarId(const LLUUID& avatar_id) override;
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void resetData() override;
 
@@ -136,7 +142,7 @@ protected:
      */
     void fillAgeData(const LLAvatarData* avatar_data);
 
-    void onImageLoaded(BOOL success, LLViewerFetchedTexture *imagep);
+    void onImageLoaded(bool success, LLViewerFetchedTexture *imagep);
 
     /**
      * Displays avatar's online status if possible.
@@ -219,7 +225,7 @@ public:
 
     void onOpen(const LLSD& key) override;
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void resetData() override;
 
@@ -258,7 +264,7 @@ public:
 
     void onOpen(const LLSD& key) override;
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void processProperties(void* data, EAvatarProcessorType type) override;
     void processProperties(const LLAvatarData* avatar_data);
@@ -309,7 +315,7 @@ public:
 
     void onOpen(const LLSD& key) override;
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void processProperties(void* data, EAvatarProcessorType type) override;
     void processProperties(const LLAvatarData* avatar_data);
@@ -344,7 +350,7 @@ public:
     LLPanelProfile();
     /*virtual*/ ~LLPanelProfile();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void updateData() override;
     void refreshName();
diff --git a/indra/newview/llpanelprofileclassifieds.cpp b/indra/newview/llpanelprofileclassifieds.cpp
index 7ec657d069..62829b0745 100644
--- a/indra/newview/llpanelprofileclassifieds.cpp
+++ b/indra/newview/llpanelprofileclassifieds.cpp
@@ -135,7 +135,7 @@ public:
 
         // get the ID for the classified
         LLUUID classified_id;
-        if (!classified_id.set(params[0], FALSE))
+        if (!classified_id.set(params[0], false))
         {
             return false;
         }
@@ -241,11 +241,11 @@ void LLPanelProfileClassifieds::onOpen(const LLSD& key)
     bool own_profile = getSelfProfile();
     if (own_profile)
     {
-        mNewButton->setVisible(TRUE);
-        mNewButton->setEnabled(FALSE);
+        mNewButton->setVisible(true);
+        mNewButton->setEnabled(false);
 
-        mDeleteButton->setVisible(TRUE);
-        mDeleteButton->setEnabled(FALSE);
+        mDeleteButton->setVisible(true);
+        mDeleteButton->setEnabled(false);
     }
 
     childSetVisible("buttons_header", own_profile);
@@ -266,7 +266,7 @@ void LLPanelProfileClassifieds::selectClassified(const LLUUID& classified_id, bo
                     mTabContainer->selectTabPanel(classified_panel);
                     if (edit)
                     {
-                        classified_panel->setEditMode(TRUE);
+                        classified_panel->setEditMode(true);
                     }
                     break;
                 }
@@ -284,7 +284,7 @@ void LLPanelProfileClassifieds::createClassified()
 {
     if (getIsLoaded())
     {
-        mNoItemsLabel->setVisible(FALSE);
+        mNoItemsLabel->setVisible(false);
         LLPanelProfileClassified* classified_panel = LLPanelProfileClassified::create();
         classified_panel->onOpen(LLSD());
         mTabContainer->addTabPanel(
@@ -300,7 +300,7 @@ void LLPanelProfileClassifieds::createClassified()
     }
 }
 
-BOOL LLPanelProfileClassifieds::postBuild()
+bool LLPanelProfileClassifieds::postBuild()
 {
     mTabContainer = getChild<LLTabContainer>("tab_classifieds");
     mNoItemsLabel = getChild<LLUICtrl>("classifieds_panel_text");
@@ -310,12 +310,12 @@ BOOL LLPanelProfileClassifieds::postBuild()
     mNewButton->setCommitCallback(boost::bind(&LLPanelProfileClassifieds::onClickNewBtn, this));
     mDeleteButton->setCommitCallback(boost::bind(&LLPanelProfileClassifieds::onClickDelete, this));
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelProfileClassifieds::onClickNewBtn()
 {
-    mNoItemsLabel->setVisible(FALSE);
+    mNoItemsLabel->setVisible(false);
     LLPanelProfileClassified* classified_panel = LLPanelProfileClassified::create();
     classified_panel->onOpen(LLSD());
     mTabContainer->addTabPanel(
@@ -364,7 +364,7 @@ void LLPanelProfileClassifieds::callbackDeleteClassified(const LLSD& notificatio
 
         updateButtons();
 
-        BOOL no_data = !mTabContainer->getTabCount();
+        bool no_data = !mTabContainer->getTabCount();
         mNoItemsLabel->setVisible(no_data);
     }
 }
@@ -474,7 +474,7 @@ void LLPanelProfileClassifieds::updateData()
     {
         setIsLoading();
         mNoItemsLabel->setValue(LLTrans::getString("PicksClassifiedsLoadingText"));
-        mNoItemsLabel->setVisible(TRUE);
+        mNoItemsLabel->setVisible(true);
 
         LLAvatarPropertiesProcessor::getInstance()->sendAvatarClassifiedsRequest(avatar_id);
     }
@@ -605,7 +605,7 @@ LLPanelProfileClassified* LLPanelProfileClassified::create()
     return panel;
 }
 
-BOOL LLPanelProfileClassified::postBuild()
+bool LLPanelProfileClassified::postBuild()
 {
     mScrollContainer    = getChild<LLScrollContainer>("profile_scroll");
     mInfoPanel          = getChild<LLView>("info_panel");
@@ -650,8 +650,8 @@ BOOL LLPanelProfileClassified::postBuild()
     mSnapshotCtrl->setOnSelectCallback(boost::bind(&LLPanelProfileClassified::onTextureSelected, this));
     mSnapshotCtrl->setMouseEnterCallback(boost::bind(&LLPanelProfileClassified::onTexturePickerMouseEnter, this));
     mSnapshotCtrl->setMouseLeaveCallback(boost::bind(&LLPanelProfileClassified::onTexturePickerMouseLeave, this));
-    mSnapshotCtrl->setAllowLocalTexture(FALSE);
-    mSnapshotCtrl->setBakeTextureEnabled(FALSE);
+    mSnapshotCtrl->setAllowLocalTexture(false);
+    mSnapshotCtrl->setBakeTextureEnabled(false);
     mEditIcon->setVisible(false);
 
     mMapButton->setCommitCallback(boost::bind(&LLPanelProfileClassified::onMapClick, this));
@@ -675,7 +675,7 @@ BOOL LLPanelProfileClassified::postBuild()
     mContentTypeCombo->setCommitCallback(boost::bind(&LLPanelProfileClassified::onChange, this));
     mAutoRenewEdit->setCommitCallback(boost::bind(&LLPanelProfileClassified::onChange, this));
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelProfileClassified::onOpen(const LLSD& key)
@@ -720,7 +720,7 @@ void LLPanelProfileClassified::onOpen(const LLSD& key)
 
         mSaveButton->setLabelArg("[LABEL]", getString("publish_label"));
 
-        setEditMode(TRUE);
+        setEditMode(true);
         enableSave(true);
         enableEditing(true);
         resetDirty();
@@ -793,7 +793,7 @@ void LLPanelProfileClassified::processProperties(void* data, EAvatarProcessorTyp
         if (mIsNewWithErrors)
         {
             // We just published it
-            setEditMode(FALSE);
+            setEditMode(false);
         }
         mIsNewWithErrors = false;
         mIsNew = false;
@@ -841,13 +841,13 @@ void LLPanelProfileClassified::processProperties(void* data, EAvatarProcessorTyp
 
         if (mEditOnLoad)
         {
-            setEditMode(TRUE);
+            setEditMode(true);
         }
     }
 
 }
 
-void LLPanelProfileClassified::setEditMode(BOOL edit_mode)
+void LLPanelProfileClassified::setEditMode(bool edit_mode)
 {
     mEditMode = edit_mode;
 
@@ -883,7 +883,7 @@ void LLPanelProfileClassified::updateInfoRect()
         // info_scroll_content_panel contains both info and edit panel
         // info panel can be very large and scroll bar will carry over.
         // Resize info panel to prevent scroll carry over when in edit mode.
-        mInfoScroll->reshape(mInfoScroll->getRect().getWidth(), DEFAULT_EDIT_CLASSIFIED_SCROLL_HEIGHT, FALSE);
+        mInfoScroll->reshape(mInfoScroll->getRect().getWidth(), DEFAULT_EDIT_CLASSIFIED_SCROLL_HEIGHT, false);
     }
     else
     {
@@ -893,7 +893,7 @@ void LLPanelProfileClassified::updateInfoRect()
         S32 delta_height = new_height - visible_rect.getHeight() + 5;
 
         LLRect rect = mInfoScroll->getRect();
-        mInfoScroll->reshape(rect.getWidth(), rect.getHeight() + delta_height, FALSE);
+        mInfoScroll->reshape(rect.getWidth(), rect.getHeight() + delta_height, false);
     }
 }
 
@@ -920,7 +920,7 @@ void LLPanelProfileClassified::resetControls()
 
 void LLPanelProfileClassified::onEditClick()
 {
-    setEditMode(TRUE);
+    setEditMode(true);
 }
 
 void LLPanelProfileClassified::onCancelClick()
@@ -945,7 +945,7 @@ void LLPanelProfileClassified::onCancelClick()
 
     setInfoLoaded(false);
 
-    setEditMode(FALSE);
+    setEditMode(false);
 }
 
 void LLPanelProfileClassified::onSaveClick()
@@ -1032,8 +1032,8 @@ void LLPanelProfileClassified::resetData()
     getChild<LLUICtrl>("click_through_text")->setValue(LLStringUtil::null);
     mEditButton->setValue(LLStringUtil::null);
     getChild<LLUICtrl>("creation_date")->setValue(LLStringUtil::null);
-    mContentTypeM->setVisible(FALSE);
-    mContentTypeG->setVisible(FALSE);
+    mContentTypeM->setVisible(false);
+    mContentTypeG->setVisible(false);
 }
 
 void LLPanelProfileClassified::setClassifiedName(const std::string& name)
@@ -1242,14 +1242,14 @@ void LLPanelProfileClassified::onTeleportClick()
     }
 }
 
-BOOL LLPanelProfileClassified::isDirty() const
+bool LLPanelProfileClassified::isDirty() const
 {
     if(mIsNew)
     {
-        return TRUE;
+        return true;
     }
 
-    BOOL dirty = false;
+    bool dirty = false;
     dirty |= mSnapshotCtrl->isDirty();
     dirty |= mClassifiedNameEdit->isDirty();
     dirty |= mClassifiedDescEdit->isDirty();
@@ -1429,7 +1429,7 @@ void LLPanelProfileClassified::doSave()
 
     if (!isNew() && !isNewWithErrors())
     {
-        setEditMode(FALSE);
+        setEditMode(false);
         return;
     }
 
@@ -1487,12 +1487,12 @@ void LLPanelProfileClassified::notifyInvalidName()
 
 void LLPanelProfileClassified::onTexturePickerMouseEnter()
 {
-    mEditIcon->setVisible(TRUE);
+    mEditIcon->setVisible(true);
 }
 
 void LLPanelProfileClassified::onTexturePickerMouseLeave()
 {
-    mEditIcon->setVisible(FALSE);
+    mEditIcon->setVisible(false);
 }
 
 void LLPanelProfileClassified::onTextureSelected()
@@ -1525,14 +1525,14 @@ LLPublishClassifiedFloater::~LLPublishClassifiedFloater()
 {
 }
 
-BOOL LLPublishClassifiedFloater::postBuild()
+bool LLPublishClassifiedFloater::postBuild()
 {
     LLFloater::postBuild();
 
     childSetAction("publish_btn", boost::bind(&LLFloater::closeFloater, this, false));
     childSetAction("cancel_btn", boost::bind(&LLFloater::closeFloater, this, false));
 
-    return TRUE;
+    return true;
 }
 
 void LLPublishClassifiedFloater::setPrice(S32 price)
diff --git a/indra/newview/llpanelprofileclassifieds.h b/indra/newview/llpanelprofileclassifieds.h
index 76e6eb6808..42cd5f8975 100644
--- a/indra/newview/llpanelprofileclassifieds.h
+++ b/indra/newview/llpanelprofileclassifieds.h
@@ -54,7 +54,7 @@ public:
     LLPublishClassifiedFloater(const LLSD& key);
     virtual ~LLPublishClassifiedFloater();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void setPrice(S32 price);
     S32 getPrice();
@@ -74,7 +74,7 @@ public:
     LLPanelProfileClassifieds();
     /*virtual*/ ~LLPanelProfileClassifieds();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void onOpen(const LLSD& key) override;
 
@@ -125,7 +125,7 @@ public:
 
     /*virtual*/ ~LLPanelProfileClassified();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void onOpen(const LLSD& key) override;
 
@@ -171,7 +171,7 @@ public:
 
     void setInfoLoaded(bool loaded) { mInfoLoaded = loaded; }
 
-    BOOL isDirty() const override;
+    bool isDirty() const override;
 
     void resetDirty() override;
 
@@ -193,7 +193,7 @@ public:
 
     S32 getPriceForListing() { return mPriceForListing; }
 
-    void setEditMode(BOOL edit_mode);
+    void setEditMode(bool edit_mode);
     bool getEditMode() {return mEditMode;}
 
     static void setClickThrough(
diff --git a/indra/newview/llpanelprofilepicks.cpp b/indra/newview/llpanelprofilepicks.cpp
index b097e637a4..08f3d3af5a 100644
--- a/indra/newview/llpanelprofilepicks.cpp
+++ b/indra/newview/llpanelprofilepicks.cpp
@@ -113,7 +113,7 @@ public:
 
         // get the ID for the pick_id
         LLUUID pick_id;
-        if (!pick_id.set(params[0], FALSE))
+        if (!pick_id.set(params[0], false))
         {
             return false;
         }
@@ -159,11 +159,11 @@ void LLPanelProfilePicks::onOpen(const LLSD& key)
     bool own_profile = getSelfProfile();
     if (own_profile)
     {
-        mNewButton->setVisible(TRUE);
-        mNewButton->setEnabled(FALSE);
+        mNewButton->setVisible(true);
+        mNewButton->setEnabled(false);
 
-        mDeleteButton->setVisible(TRUE);
-        mDeleteButton->setEnabled(FALSE);
+        mDeleteButton->setVisible(true);
+        mDeleteButton->setEnabled(false);
     }
 
     childSetVisible("buttons_header", own_profile);
@@ -175,7 +175,7 @@ void LLPanelProfilePicks::createPick(const LLPickData &data)
     {
         if (canAddNewPick())
         {
-            mNoItemsLabel->setVisible(FALSE);
+            mNoItemsLabel->setVisible(false);
             LLPanelProfilePick* pick_panel = LLPanelProfilePick::create();
             pick_panel->setAvatarId(getAvatarId());
             pick_panel->processProperties(&data);
@@ -222,7 +222,7 @@ void LLPanelProfilePicks::selectPick(const LLUUID& pick_id)
     }
 }
 
-BOOL LLPanelProfilePicks::postBuild()
+bool LLPanelProfilePicks::postBuild()
 {
     mTabContainer = getChild<LLTabContainer>("tab_picks");
     mNoItemsLabel = getChild<LLUICtrl>("picks_panel_text");
@@ -232,12 +232,12 @@ BOOL LLPanelProfilePicks::postBuild()
     mNewButton->setCommitCallback(boost::bind(&LLPanelProfilePicks::onClickNewBtn, this));
     mDeleteButton->setCommitCallback(boost::bind(&LLPanelProfilePicks::onClickDelete, this));
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelProfilePicks::onClickNewBtn()
 {
-    mNoItemsLabel->setVisible(FALSE);
+    mNoItemsLabel->setVisible(false);
     LLPanelProfilePick* pick_panel = LLPanelProfilePick::create();
     pick_panel->setAvatarId(getAvatarId());
     mTabContainer->addTabPanel(
@@ -431,7 +431,7 @@ void LLPanelProfilePicks::updateData()
     if (!getIsLoaded())
     {
         mNoItemsLabel->setValue(LLTrans::getString("PicksClassifiedsLoadingText"));
-        mNoItemsLabel->setVisible(TRUE);
+        mNoItemsLabel->setVisible(true);
     }
 }
 
@@ -556,29 +556,29 @@ void LLPanelProfilePick::setAvatarId(const LLUUID& avatar_id)
         setSnapshotId(snapshot_id);
         setPickLocation(createLocationText(getLocationNotice(), pick_name, region_name, getPosGlobal()));
 
-        enableSaveButton(TRUE);
+        enableSaveButton(true);
     }
     else
     {
         LLAvatarPropertiesProcessor::getInstance()->sendPickInfoRequest(getAvatarId(), getPickId());
 
-        enableSaveButton(FALSE);
+        enableSaveButton(false);
     }
 
     resetDirty();
 
     if (getSelfProfile())
     {
-        mPickName->setEnabled(TRUE);
-        mPickDescription->setEnabled(TRUE);
+        mPickName->setEnabled(true);
+        mPickDescription->setEnabled(true);
     }
     else
     {
-        mSnapshotCtrl->setEnabled(FALSE);
+        mSnapshotCtrl->setEnabled(false);
     }
 }
 
-BOOL LLPanelProfilePick::postBuild()
+bool LLPanelProfilePick::postBuild()
 {
     mPickName = getChild<LLLineEditor>("pick_name");
     mPickDescription = getChild<LLTextEditor>("pick_desc");
@@ -588,8 +588,8 @@ BOOL LLPanelProfilePick::postBuild()
 
     mSnapshotCtrl = getChild<LLTextureCtrl>("pick_snapshot");
     mSnapshotCtrl->setCommitCallback(boost::bind(&LLPanelProfilePick::onSnapshotChanged, this));
-    mSnapshotCtrl->setAllowLocalTexture(FALSE);
-    mSnapshotCtrl->setBakeTextureEnabled(FALSE);
+    mSnapshotCtrl->setAllowLocalTexture(false);
+    mSnapshotCtrl->setBakeTextureEnabled(false);
 
     childSetAction("teleport_btn", boost::bind(&LLPanelProfilePick::onClickTeleport, this));
     childSetAction("show_on_map_btn", boost::bind(&LLPanelProfilePick::onClickMap, this));
@@ -599,14 +599,14 @@ BOOL LLPanelProfilePick::postBuild()
     mCancelButton->setCommitCallback(boost::bind(&LLPanelProfilePick::onClickCancel, this));
 
     mPickName->setKeystrokeCallback(boost::bind(&LLPanelProfilePick::onPickChanged, this, _1), NULL);
-    mPickName->setEnabled(FALSE);
+    mPickName->setEnabled(false);
 
     mPickDescription->setKeystrokeCallback(boost::bind(&LLPanelProfilePick::onPickChanged, this, _1));
     mPickDescription->setFocusReceivedCallback(boost::bind(&LLPanelProfilePick::onDescriptionFocusReceived, this));
 
-    getChild<LLUICtrl>("pick_location")->setEnabled(FALSE);
+    getChild<LLUICtrl>("pick_location")->setEnabled(false);
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelProfilePick::onDescriptionFocusReceived()
@@ -644,7 +644,7 @@ void LLPanelProfilePick::processProperties(const LLPickData* pick_info)
     setSnapshotId(pick_info->snapshot_id);
     if (!getSelfProfile())
     {
-        mSnapshotCtrl->setEnabled(FALSE);
+        mSnapshotCtrl->setEnabled(false);
     }
     setPickName(pick_info->name);
     setPickDesc(pick_info->desc);
@@ -672,7 +672,7 @@ void LLPanelProfilePick::apply()
 void LLPanelProfilePick::setSnapshotId(const LLUUID& id)
 {
     mSnapshotCtrl->setImageAssetID(id);
-    mSnapshotCtrl->setValid(TRUE);
+    mSnapshotCtrl->setValid(true);
 }
 
 void LLPanelProfilePick::setPickName(const std::string& name)
@@ -711,7 +711,7 @@ void LLPanelProfilePick::onClickTeleport()
     }
 }
 
-void LLPanelProfilePick::enableSaveButton(BOOL enable)
+void LLPanelProfilePick::enableSaveButton(bool enable)
 {
     childSetVisible("save_changes_lp", enable);
 
@@ -722,7 +722,7 @@ void LLPanelProfilePick::enableSaveButton(BOOL enable)
 
 void LLPanelProfilePick::onSnapshotChanged()
 {
-    enableSaveButton(TRUE);
+    enableSaveButton(true);
 }
 
 void LLPanelProfilePick::onPickChanged(LLUICtrl* ctrl)
@@ -745,7 +745,7 @@ void LLPanelProfilePick::resetDirty()
     mLocationChanged = false;
 }
 
-BOOL LLPanelProfilePick::isDirty() const
+bool LLPanelProfilePick::isDirty() const
 {
     if (mNewPick
         || LLPanel::isDirty()
@@ -754,9 +754,9 @@ BOOL LLPanelProfilePick::isDirty() const
         || mPickName->isDirty()
         || mPickDescription->isDirty())
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 void LLPanelProfilePick::onClickSave()
@@ -779,7 +779,7 @@ void LLPanelProfilePick::onClickCancel()
     updateTabLabel(mPickNameStr);
     LLAvatarPropertiesProcessor::getInstance()->sendPickInfoRequest(getAvatarId(), getPickId());
     mLocationChanged = false;
-    enableSaveButton(FALSE);
+    enableSaveButton(false);
 }
 
 std::string LLPanelProfilePick::getLocationNotice()
@@ -833,14 +833,14 @@ void LLPanelProfilePick::sendUpdate()
     pick_data.creator_id = gAgentID;;
 
     //legacy var  need to be deleted
-    pick_data.top_pick = FALSE;
+    pick_data.top_pick = false;
     pick_data.parcel_id = mParcelId;
     pick_data.name = getPickName();
     pick_data.desc = mPickDescription->getValue().asString();
     pick_data.snapshot_id = mSnapshotCtrl->getImageAssetID();
     pick_data.pos_global = getPosGlobal();
     pick_data.sort_order = 0;
-    pick_data.enabled = TRUE;
+    pick_data.enabled = true;
 
     LLAvatarPropertiesProcessor::getInstance()->sendPickInfoUpdate(&pick_data);
 
diff --git a/indra/newview/llpanelprofilepicks.h b/indra/newview/llpanelprofilepicks.h
index 90c527e0f3..e3f50f5576 100644
--- a/indra/newview/llpanelprofilepicks.h
+++ b/indra/newview/llpanelprofilepicks.h
@@ -50,7 +50,7 @@ public:
     LLPanelProfilePicks();
     /*virtual*/ ~LLPanelProfilePicks();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void onOpen(const LLSD& key) override;
 
@@ -108,7 +108,7 @@ public:
 
     /*virtual*/ ~LLPanelProfilePick();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     void setAvatarId(const LLUUID& avatar_id) override;
 
@@ -124,7 +124,7 @@ public:
     /**
      * Returns true if any of Pick properties was changed by user.
      */
-    BOOL isDirty() const override;
+    bool isDirty() const override;
 
     /**
      * Saves changes.
@@ -182,7 +182,7 @@ public:
     /**
      * Enables/disables "Save" button
      */
-    void enableSaveButton(BOOL enable);
+    void enableSaveButton(bool enable);
 
     /**
      * Called when snapshot image changes.
diff --git a/indra/newview/llpanelpulldown.cpp b/indra/newview/llpanelpulldown.cpp
index 075278f44c..f26a9dc362 100644
--- a/indra/newview/llpanelpulldown.cpp
+++ b/indra/newview/llpanelpulldown.cpp
@@ -51,35 +51,35 @@ void LLPanelPulldown::onMouseEnter(S32 x, S32 y, MASK mask)
 /*virtual*/
 void LLPanelPulldown::onTopLost()
 {
-    setFocus(FALSE); // drop focus to prevent transfer to parent
-    setVisible(FALSE);
+    setFocus(false); // drop focus to prevent transfer to parent
+    setVisible(false);
 }
 
 /*virtual*/
-BOOL LLPanelPulldown::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLPanelPulldown::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     LLPanel::handleMouseDown(x, y, mask);
-    return TRUE;
+    return true;
 }
 
 /*virtual*/
-BOOL LLPanelPulldown::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLPanelPulldown::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     LLPanel::handleRightMouseDown(x, y, mask);
-    return TRUE;
+    return true;
 }
 
 /*virtual*/
-BOOL LLPanelPulldown::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLPanelPulldown::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     LLPanel::handleDoubleClick(x, y, mask);
-    return TRUE;
+    return true;
 }
 
-BOOL LLPanelPulldown::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLPanelPulldown::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     LLPanel::handleScrollWheel(x, y, clicks);
-    return TRUE; //If we got here, then we are in Pulldown's rect, consume the event.
+    return true; //If we got here, then we are in Pulldown's rect, consume the event.
 }
 
 /*virtual*/
@@ -90,7 +90,7 @@ void LLPanelPulldown::onMouseLeave(S32 x, S32 y, MASK mask)
 }
 
 /*virtual*/
-void LLPanelPulldown::onVisibilityChange(BOOL new_visibility)
+void LLPanelPulldown::onVisibilityChange(bool new_visibility)
 {
     if (new_visibility)
     {
@@ -114,7 +114,7 @@ void LLPanelPulldown::draw()
 
     if (alpha == 0.f)
     {
-        setFocus(FALSE); // drop focus to prevent transfer to parent
-        setVisible(FALSE);
+        setFocus(false); // drop focus to prevent transfer to parent
+        setVisible(false);
     }
 }
diff --git a/indra/newview/llpanelpulldown.h b/indra/newview/llpanelpulldown.h
index 1bb13d91f9..850ea09664 100644
--- a/indra/newview/llpanelpulldown.h
+++ b/indra/newview/llpanelpulldown.h
@@ -37,16 +37,16 @@ class LLPanelPulldown : public LLPanel
 {
 public:
     LLPanelPulldown();
-    /*virtual*/ void onMouseEnter(S32 x, S32 y, MASK mask);
-    /*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleScrollWheel(S32 x, S32 y, S32 clicks);
-    /*virtual*/ void onTopLost();
-    /*virtual*/ void onVisibilityChange(BOOL new_visibility);
-
-    /*virtual*/ void draw();
+    void onMouseEnter(S32 x, S32 y, MASK mask) override;
+    void onMouseLeave(S32 x, S32 y, MASK mask) override;
+    bool handleMouseDown(S32 x, S32 y, MASK mask) override;
+    bool handleRightMouseDown(S32 x, S32 y, MASK mask) override;
+    bool handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    bool handleScrollWheel(S32 x, S32 y, S32 clicks) override;
+    void onTopLost() override;
+    void onVisibilityChange(bool new_visibility) override;
+
+    void draw() override;
 
 protected:
     LLFrameTimer mHoverTimer;
diff --git a/indra/newview/llpanelsnapshot.cpp b/indra/newview/llpanelsnapshot.cpp
index bd44a2139f..2536dce606 100644
--- a/indra/newview/llpanelsnapshot.cpp
+++ b/indra/newview/llpanelsnapshot.cpp
@@ -41,7 +41,7 @@
 
 #include "llagentbenefits.h"
 
-const S32 MAX_TEXTURE_SIZE = 512 ; //max upload texture size 512 * 512
+constexpr S32 MAX_TEXTURE_SIZE = 512 ; //max upload texture size 512 * 512
 
 S32 power_of_two(S32 sz, S32 upper)
 {
@@ -59,7 +59,7 @@ LLPanelSnapshot::LLPanelSnapshot()
 {}
 
 // virtual
-BOOL LLPanelSnapshot::postBuild()
+bool LLPanelSnapshot::postBuild()
 {
     getChild<LLUICtrl>("save_btn")->setLabelArg("[UPLOAD_COST]", std::to_string(LLAgentBenefitsMgr::current().getTextureUploadCost()));
     getChild<LLUICtrl>(getImageSizeComboName())->setCommitCallback(boost::bind(&LLPanelSnapshot::onResolutionComboCommit, this, _1));
@@ -78,7 +78,7 @@ BOOL LLPanelSnapshot::postBuild()
     updateControls(LLSD());
 
     mSnapshotFloater = getParentByType<LLFloaterSnapshotBase>();
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -104,7 +104,7 @@ LLSnapshotModel::ESnapshotFormat LLPanelSnapshot::getImageFormat() const
     return LLSnapshotModel::SNAPSHOT_FORMAT_JPEG;
 }
 
-void LLPanelSnapshot::enableControls(BOOL enable)
+void LLPanelSnapshot::enableControls(bool enable)
 {
     setCtrlsEnabled(enable);
 }
@@ -133,7 +133,7 @@ S32 LLPanelSnapshot::getTypedPreviewHeight() const
     return getChild<LLUICtrl>(getHeightSpinnerName())->getValue().asInteger();
 }
 
-void LLPanelSnapshot::enableAspectRatioCheckbox(BOOL enable)
+void LLPanelSnapshot::enableAspectRatioCheckbox(bool enable)
 {
     llassert(!getAspectRatioCBName().empty());
     getChild<LLUICtrl>(getAspectRatioCBName())->setEnabled(enable);
diff --git a/indra/newview/llpanelsnapshot.h b/indra/newview/llpanelsnapshot.h
index a960ee8fe1..3f5ad274b8 100644
--- a/indra/newview/llpanelsnapshot.h
+++ b/indra/newview/llpanelsnapshot.h
@@ -43,8 +43,8 @@ class LLPanelSnapshot: public LLPanel
 public:
     LLPanelSnapshot();
 
-    /*virtual*/ BOOL postBuild();
-    /*virtual*/ void onOpen(const LLSD& key);
+    bool postBuild() override;
+    void onOpen(const LLSD& key) override;
 
     virtual std::string getWidthSpinnerName() const = 0;
     virtual std::string getHeightSpinnerName() const = 0;
@@ -56,11 +56,11 @@ public:
     virtual S32 getTypedPreviewHeight() const;
     virtual LLSpinCtrl* getWidthSpinner();
     virtual LLSpinCtrl* getHeightSpinner();
-    virtual void enableAspectRatioCheckbox(BOOL enable);
+    virtual void enableAspectRatioCheckbox(bool enable);
     virtual LLSnapshotModel::ESnapshotFormat getImageFormat() const;
     virtual LLSnapshotModel::ESnapshotType getSnapshotType();
     virtual void updateControls(const LLSD& info) = 0; ///< Update controls from saved settings
-    void enableControls(BOOL enable);
+    void enableControls(bool enable);
 
 protected:
     LLSideTrayPanelContainer* getParentContainer();
diff --git a/indra/newview/llpanelsnapshotinventory.cpp b/indra/newview/llpanelsnapshotinventory.cpp
index 3092ea3b18..4abb89120b 100644
--- a/indra/newview/llpanelsnapshotinventory.cpp
+++ b/indra/newview/llpanelsnapshotinventory.cpp
@@ -50,7 +50,7 @@ class LLPanelSnapshotInventoryBase
 public:
     LLPanelSnapshotInventoryBase();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 protected:
     void onSend();
     /*virtual*/ LLSnapshotModel::ESnapshotType getSnapshotType();
@@ -63,7 +63,7 @@ class LLPanelSnapshotInventory
 
 public:
     LLPanelSnapshotInventory();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
     void onResolutionCommit(LLUICtrl* ctrl);
@@ -85,7 +85,7 @@ class LLPanelOutfitSnapshotInventory
 
 public:
     LLPanelOutfitSnapshotInventory();
-        /*virtual*/ BOOL postBuild();
+        /*virtual*/ bool postBuild();
         /*virtual*/ void onOpen(const LLSD& key);
 
 private:
@@ -107,7 +107,7 @@ LLPanelSnapshotInventoryBase::LLPanelSnapshotInventoryBase()
 {
 }
 
-BOOL LLPanelSnapshotInventoryBase::postBuild()
+bool LLPanelSnapshotInventoryBase::postBuild()
 {
     return LLPanelSnapshot::postBuild();
 }
@@ -124,10 +124,10 @@ LLPanelSnapshotInventory::LLPanelSnapshotInventory()
 }
 
 // virtual
-BOOL LLPanelSnapshotInventory::postBuild()
+bool LLPanelSnapshotInventory::postBuild()
 {
-    getChild<LLSpinCtrl>(getWidthSpinnerName())->setAllowEdit(FALSE);
-    getChild<LLSpinCtrl>(getHeightSpinnerName())->setAllowEdit(FALSE);
+    getChild<LLSpinCtrl>(getWidthSpinnerName())->setAllowEdit(false);
+    getChild<LLSpinCtrl>(getHeightSpinnerName())->setAllowEdit(false);
 
     getChild<LLUICtrl>(getImageSizeComboName())->setCommitCallback(boost::bind(&LLPanelSnapshotInventory::onResolutionCommit, this, _1));
     return LLPanelSnapshotInventoryBase::postBuild();
@@ -148,7 +148,7 @@ void LLPanelSnapshotInventory::updateControls(const LLSD& info)
 
 void LLPanelSnapshotInventory::onResolutionCommit(LLUICtrl* ctrl)
 {
-    BOOL current_window_selected = (getChild<LLComboBox>(getImageSizeComboName())->getCurrentIndex() == 3);
+    bool current_window_selected = (getChild<LLComboBox>(getImageSizeComboName())->getCurrentIndex() == 3);
     getChild<LLSpinCtrl>(getWidthSpinnerName())->setVisible(!current_window_selected);
     getChild<LLSpinCtrl>(getHeightSpinnerName())->setVisible(!current_window_selected);
 }
@@ -183,7 +183,7 @@ LLPanelOutfitSnapshotInventory::LLPanelOutfitSnapshotInventory()
 }
 
 // virtual
-BOOL LLPanelOutfitSnapshotInventory::postBuild()
+bool LLPanelOutfitSnapshotInventory::postBuild()
 {
     return LLPanelSnapshotInventoryBase::postBuild();
 }
diff --git a/indra/newview/llpanelsnapshotlocal.cpp b/indra/newview/llpanelsnapshotlocal.cpp
index bcb1022c81..366030c0fa 100644
--- a/indra/newview/llpanelsnapshotlocal.cpp
+++ b/indra/newview/llpanelsnapshotlocal.cpp
@@ -47,7 +47,7 @@ class LLPanelSnapshotLocal
 
 public:
     LLPanelSnapshotLocal();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
 private:
@@ -79,7 +79,7 @@ LLPanelSnapshotLocal::LLPanelSnapshotLocal()
 }
 
 // virtual
-BOOL LLPanelSnapshotLocal::postBuild()
+bool LLPanelSnapshotLocal::postBuild()
 {
     getChild<LLUICtrl>("image_quality_slider")->setCommitCallback(boost::bind(&LLPanelSnapshotLocal::onQualitySliderCommit, this, _1));
     getChild<LLUICtrl>("local_format_combo")->setCommitCallback(boost::bind(&LLPanelSnapshotLocal::onFormatComboCommit, this, _1));
diff --git a/indra/newview/llpanelsnapshotoptions.cpp b/indra/newview/llpanelsnapshotoptions.cpp
index 28e1f33b16..776de460a9 100644
--- a/indra/newview/llpanelsnapshotoptions.cpp
+++ b/indra/newview/llpanelsnapshotoptions.cpp
@@ -46,7 +46,7 @@ class LLPanelSnapshotOptions
 public:
     LLPanelSnapshotOptions();
     ~LLPanelSnapshotOptions();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
 private:
@@ -75,7 +75,7 @@ LLPanelSnapshotOptions::~LLPanelSnapshotOptions()
 }
 
 // virtual
-BOOL LLPanelSnapshotOptions::postBuild()
+bool LLPanelSnapshotOptions::postBuild()
 {
     mSnapshotFloater = getParentByType<LLFloaterSnapshotBase>();
     return LLPanel::postBuild();
diff --git a/indra/newview/llpanelsnapshotpostcard.cpp b/indra/newview/llpanelsnapshotpostcard.cpp
index 3a25e471bb..23e8789e3f 100644
--- a/indra/newview/llpanelsnapshotpostcard.cpp
+++ b/indra/newview/llpanelsnapshotpostcard.cpp
@@ -56,7 +56,7 @@ class LLPanelSnapshotPostcard
 
 public:
     LLPanelSnapshotPostcard();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
 private:
@@ -92,12 +92,12 @@ LLPanelSnapshotPostcard::LLPanelSnapshotPostcard()
 }
 
 // virtual
-BOOL LLPanelSnapshotPostcard::postBuild()
+bool LLPanelSnapshotPostcard::postBuild()
 {
     // For the first time a user focuses to .the msg box, all text will be selected.
     getChild<LLUICtrl>("msg_form")->setFocusChangedCallback(boost::bind(&LLPanelSnapshotPostcard::onMsgFormFocusRecieved, this));
 
-    getChild<LLUICtrl>("to_form")->setFocus(TRUE);
+    getChild<LLUICtrl>("to_form")->setFocus(true);
 
     getChild<LLUICtrl>("image_quality_slider")->setCommitCallback(boost::bind(&LLPanelSnapshotPostcard::onQualitySliderCommit, this, _1));
 
diff --git a/indra/newview/llpanelsnapshotprofile.cpp b/indra/newview/llpanelsnapshotprofile.cpp
index 7204235407..aa257dea9e 100644
--- a/indra/newview/llpanelsnapshotprofile.cpp
+++ b/indra/newview/llpanelsnapshotprofile.cpp
@@ -49,7 +49,7 @@ class LLPanelSnapshotProfile
 public:
     LLPanelSnapshotProfile();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
 private:
@@ -73,7 +73,7 @@ LLPanelSnapshotProfile::LLPanelSnapshotProfile()
 }
 
 // virtual
-BOOL LLPanelSnapshotProfile::postBuild()
+bool LLPanelSnapshotProfile::postBuild()
 {
     return LLPanelSnapshot::postBuild();
 }
diff --git a/indra/newview/llpanelteleporthistory.cpp b/indra/newview/llpanelteleporthistory.cpp
index 627074efa9..902412d359 100644
--- a/indra/newview/llpanelteleporthistory.cpp
+++ b/indra/newview/llpanelteleporthistory.cpp
@@ -60,7 +60,7 @@ public:
                                              LLDate date, const std::string &hl);
     virtual ~LLTeleportHistoryFlatItem();
 
-    virtual BOOL postBuild();
+    virtual bool postBuild();
 
     /*virtual*/ S32 notify(const LLSD& info);
 
@@ -78,7 +78,7 @@ public:
 
     void onMouseEnter(S32 x, S32 y, MASK mask);
     void onMouseLeave(S32 x, S32 y, MASK mask);
-    virtual BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleRightMouseDown(S32 x, S32 y, MASK mask);
 
     static void showPlaceInfoPanel(S32 index);
 
@@ -148,7 +148,7 @@ LLTeleportHistoryFlatItem::~LLTeleportHistoryFlatItem()
 }
 
 //virtual
-BOOL LLTeleportHistoryFlatItem::postBuild()
+bool LLTeleportHistoryFlatItem::postBuild()
 {
     mTitle = getChild<LLTextBox>("region");
 
@@ -265,11 +265,11 @@ void LLTeleportHistoryFlatItem::onMouseLeave(S32 x, S32 y, MASK mask)
 }
 
 // virtual
-BOOL LLTeleportHistoryFlatItem::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLTeleportHistoryFlatItem::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     LLPanel::handleRightMouseDown(x, y, mask);
     showMenu(x, y);
-    return TRUE;
+    return true;
 }
 
 void LLTeleportHistoryFlatItem::showPlaceInfoPanel(S32 index)
@@ -317,7 +317,7 @@ LLTeleportHistoryFlatItemStorage::getFlatItemForPersistentItem (
             item->setRegionName(persistent_item.mTitle);
             item->setDate(persistent_item.mDate);
             item->setHighlightedText(hl);
-            item->setVisible(TRUE);
+            item->setVisible(true);
             item->updateTitle();
             item->updateTimestamp();
         }
@@ -400,14 +400,14 @@ LLTeleportHistoryPanel::~LLTeleportHistoryPanel()
     mTeleportHistoryChangedConnection.disconnect();
 }
 
-BOOL LLTeleportHistoryPanel::postBuild()
+bool LLTeleportHistoryPanel::postBuild()
 {
     mCommitCallbackRegistrar.add("TeleportHistory.GearMenu.Action", boost::bind(&LLTeleportHistoryPanel::onGearMenuAction, this, _2));
     mEnableCallbackRegistrar.add("TeleportHistory.GearMenu.Enable", boost::bind(&LLTeleportHistoryPanel::isActionEnabled, this, _2));
 
     // init menus before list, since menus are passed to list
     mGearItemMenu = LLUICtrlFactory::getInstance()->createFromFile<LLToggleableMenu>("menu_teleport_history_item.xml", gMenuHolder, LLViewerMenuHolderGL::child_registry_t::instance());
-    mGearItemMenu->setAlwaysShowMenu(TRUE); // all items can be disabled if nothing is selected, show anyway
+    mGearItemMenu->setAlwaysShowMenu(true); // all items can be disabled if nothing is selected, show anyway
     mSortingMenu = LLUICtrlFactory::getInstance()->createFromFile<LLToggleableMenu>("menu_teleport_history_gear.xml", gMenuHolder, LLViewerMenuHolderGL::child_registry_t::instance());
 
     mTeleportHistory = LLTeleportHistoryStorage::getInstance();
@@ -461,7 +461,7 @@ BOOL LLTeleportHistoryPanel::postBuild()
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -598,7 +598,7 @@ void LLTeleportHistoryPanel::getNextTab(const LLDate& item_date, S32& tab_idx, L
 {
     const U32 seconds_in_day = 24 * 60 * 60;
 
-    S32 tabs_cnt = mItemContainers.size();
+    S32 tabs_cnt = static_cast<S32>(mItemContainers.size());
     S32 curr_year = 0, curr_month = 0, curr_day = 0;
 
     tab_date = LLDate::now();
@@ -695,7 +695,7 @@ void LLTeleportHistoryPanel::refresh()
             // tab_boundary_date would be earliest possible date for this tab
             S32 tab_idx = 0;
             getNextTab(date, tab_idx, tab_boundary_date);
-            tab_idx = mItemContainers.size() - 1 - tab_idx;
+            tab_idx = static_cast<S32>(mItemContainers.size()) - 1 - tab_idx;
             if (tab_idx >= 0)
             {
                 LLAccordionCtrlTab* tab = mItemContainers.at(tab_idx);
@@ -743,7 +743,7 @@ void LLTeleportHistoryPanel::refresh()
             break;
     }
 
-    for (S32 n = mItemContainers.size() - 1; n >= 0; --n)
+    for (S32 n = static_cast<S32>(mItemContainers.size()) - 1; n >= 0; --n)
     {
         LLAccordionCtrlTab* tab = mItemContainers.at(n);
         LLFlatListView* fv = getFlatListViewFromTab(tab);
@@ -798,14 +798,14 @@ void LLTeleportHistoryPanel::replaceItem(S32 removed_index)
     LLTeleportHistoryFlatItem* item = LLTeleportHistoryFlatItemStorage::instance()
         .getFlatItemForPersistentItem(mGearItemMenu,
                                       history_items[history_items.size() - 1], // Most recent item, it was added instead of removed
-                                      history_items.size(), // index will be decremented inside loop below
+                                      static_cast<S32>(history_items.size()), // index will be decremented inside loop below
                                       sFilterSubString);
 
     fv->addItem(item, LLUUID::null, ADD_TOP);
 
     // Index of each item, from last to removed item should be decremented
     // to point to the right item in LLTeleportHistoryStorage
-    for (S32 tab_idx = mItemContainers.size() - 1; tab_idx >= 0; --tab_idx)
+    for (S32 tab_idx = static_cast<S32>(mItemContainers.size()) - 1; tab_idx >= 0; --tab_idx)
     {
         LLAccordionCtrlTab* tab = mItemContainers.at(tab_idx);
         if (!tab->getVisible())
@@ -821,8 +821,8 @@ void LLTeleportHistoryPanel::replaceItem(S32 removed_index)
         std::vector<LLPanel*> items;
         fv->getItems(items);
 
-        S32 items_cnt = items.size();
-        for (S32 n = 0; n < items_cnt; ++n)
+        auto items_cnt = items.size();
+        for (size_t n = 0; n < items_cnt; ++n)
         {
             LLTeleportHistoryFlatItem *item = (LLTeleportHistoryFlatItem*) items[n];
 
@@ -857,9 +857,9 @@ void LLTeleportHistoryPanel::showTeleportHistory()
         mTeleportHistory = LLTeleportHistoryStorage::getInstance();
     }
 
-    mCurrentItem = mTeleportHistory->getItems().size() - 1;
+    mCurrentItem = static_cast<S32>(mTeleportHistory->getItems().size()) - 1;
 
-    for (S32 n = mItemContainers.size() - 1; n >= 0; --n)
+    for (S32 n = static_cast<S32>(mItemContainers.size()) - 1; n >= 0; --n)
     {
         LLAccordionCtrlTab* tab = mItemContainers.at(n);
         if (tab)
@@ -884,9 +884,9 @@ void LLTeleportHistoryPanel::handleItemSelect(LLFlatListView* selected)
     if (item)
         mLastSelectedItemIndex = item->getIndex();
 
-    S32 tabs_cnt = mItemContainers.size();
+    auto tabs_cnt = mItemContainers.size();
 
-    for (S32 n = 0; n < tabs_cnt; n++)
+    for (size_t n = 0; n < tabs_cnt; n++)
     {
         LLAccordionCtrlTab* tab = mItemContainers.at(n);
 
@@ -949,8 +949,8 @@ void LLTeleportHistoryPanel::onAccordionTabRightClick(LLView *view, S32 x, S32 y
     mAccordionTabMenu = LLUICtrlFactory::getInstance()->createFromFile<LLContextMenu>(
         "menu_teleport_history_tab.xml", LLMenuGL::sMenuContainer, LLViewerMenuHolderGL::child_registry_t::instance());
 
-    mAccordionTabMenu->setItemVisible("TabOpen", !tab->isExpanded() ? true : false);
-    mAccordionTabMenu->setItemVisible("TabClose", tab->isExpanded() ? true : false);
+    mAccordionTabMenu->setItemVisible("TabOpen", !tab->isExpanded());
+    mAccordionTabMenu->setItemVisible("TabClose", tab->isExpanded());
 
     mAccordionTabMenu->show(x, y);
     LLMenuGL::showPopup(tab, mAccordionTabMenu, x, y);
@@ -1001,7 +1001,7 @@ LLFlatListView* LLTeleportHistoryPanel::getFlatListViewFromTab(LLAccordionCtrlTa
 
 void LLTeleportHistoryPanel::gotSLURLCallback(const std::string& slurl)
 {
-    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(slurl), 0, slurl.size());
+    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(slurl), 0, static_cast<S32>(slurl.size()));
 
     LLSD args;
     args["SLURL"] = slurl;
@@ -1015,9 +1015,9 @@ void LLTeleportHistoryPanel::onGearMenuAction(const LLSD& userdata)
 
     if ("expand_all" == command_name)
     {
-        S32 tabs_cnt = mItemContainers.size();
+        auto tabs_cnt = mItemContainers.size();
 
-        for (S32 n = 0; n < tabs_cnt; n++)
+        for (size_t n = 0; n < tabs_cnt; n++)
         {
             mItemContainers.at(n)->setDisplayChildren(true);
         }
@@ -1025,9 +1025,9 @@ void LLTeleportHistoryPanel::onGearMenuAction(const LLSD& userdata)
     }
     else if ("collapse_all" == command_name)
     {
-        S32 tabs_cnt = mItemContainers.size();
+        auto tabs_cnt = mItemContainers.size();
 
-        for (S32 n = 0; n < tabs_cnt; n++)
+        for (size_t n = 0; n < tabs_cnt; n++)
         {
             mItemContainers.at(n)->setDisplayChildren(false);
         }
@@ -1082,12 +1082,12 @@ bool LLTeleportHistoryPanel::isActionEnabled(const LLSD& userdata) const
     if (command_name == "collapse_all"
         || command_name == "expand_all")
     {
-        S32 tabs_cnt = mItemContainers.size();
+        auto tabs_cnt = mItemContainers.size();
 
         bool has_expanded_tabs = false;
         bool has_collapsed_tabs = false;
 
-        for (S32 n = 0; n < tabs_cnt; n++)
+        for (size_t n = 0; n < tabs_cnt; n++)
         {
             LLAccordionCtrlTab* tab = mItemContainers.at(n);
             if (!tab->getVisible())
diff --git a/indra/newview/llpanelteleporthistory.h b/indra/newview/llpanelteleporthistory.h
index 20cd96a89c..48b795cc5e 100644
--- a/indra/newview/llpanelteleporthistory.h
+++ b/indra/newview/llpanelteleporthistory.h
@@ -46,7 +46,7 @@ public:
     LLTeleportHistoryPanel();
     virtual ~LLTeleportHistoryPanel();
 
-    BOOL postBuild() override;
+    bool postBuild() override;
     void draw() override;
 
     void onSearchEdit(const std::string& string) override;
@@ -62,7 +62,7 @@ public:
     LLToggleableMenu* getSortingMenu() override;
     LLToggleableMenu* getCreateMenu() override;
 
-    bool handleDragAndDropToTrash(BOOL drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept) override { return false; }
+    bool handleDragAndDropToTrash(bool drop, EDragAndDropType cargo_type, void* cargo_data, EAcceptance* accept) override { return false; }
 
 private:
 
diff --git a/indra/newview/llpaneltiptoast.cpp b/indra/newview/llpaneltiptoast.cpp
index 7b512a7737..afed140075 100644
--- a/indra/newview/llpaneltiptoast.cpp
+++ b/indra/newview/llpaneltiptoast.cpp
@@ -28,7 +28,7 @@
 
 #include "llpaneltiptoast.h"
 
-BOOL LLPanelTipToast::postBuild()
+bool LLPanelTipToast::postBuild()
 {
     mMessageText= findChild<LLUICtrl>("message");
 
@@ -40,10 +40,10 @@ BOOL LLPanelTipToast::postBuild()
     else
     {
         llassert(!"Can't find child 'message' text box.");
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelTipToast::onMessageTextClick()
diff --git a/indra/newview/llpaneltiptoast.h b/indra/newview/llpaneltiptoast.h
index f52772fbfe..85f2a7583a 100644
--- a/indra/newview/llpaneltiptoast.h
+++ b/indra/newview/llpaneltiptoast.h
@@ -40,7 +40,7 @@ class LLPanelTipToast : public LLToastPanel
     LOG_CLASS(LLPanelTipToast);
 public:
     LLPanelTipToast(const LLNotificationPtr& notification): LLToastPanel(notification) {}
-    virtual BOOL postBuild();
+    bool postBuild() override;
 private:
     void onMessageTextClick();
     void onPanelClick(S32 x, S32 y, MASK mask);
diff --git a/indra/newview/llpaneltopinfobar.cpp b/indra/newview/llpaneltopinfobar.cpp
index 499c290c66..e7ac11d570 100644
--- a/indra/newview/llpaneltopinfobar.cpp
+++ b/indra/newview/llpaneltopinfobar.cpp
@@ -128,7 +128,7 @@ void LLPanelTopInfoBar::handleLoginComplete()
     update();
 }
 
-BOOL LLPanelTopInfoBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLPanelTopInfoBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     if(!LLUICtrl::CommitCallbackRegistry::getValue("TopInfoBar.Action"))
     {
@@ -136,10 +136,10 @@ BOOL LLPanelTopInfoBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
                 .add("TopInfoBar.Action", boost::bind(&LLPanelTopInfoBar::onContextMenuItemClicked, this, _2));
     }
     show_topinfobar_context_menu(this, x, y);
-    return TRUE;
+    return true;
 }
 
-BOOL LLPanelTopInfoBar::postBuild()
+bool LLPanelTopInfoBar::postBuild()
 {
     mInfoBtn = getChild<LLButton>("place_info_btn");
     mInfoBtn->setClickedCallback(boost::bind(&LLPanelTopInfoBar::onInfoButtonClicked, this));
@@ -172,7 +172,7 @@ BOOL LLPanelTopInfoBar::postBuild()
 
     setVisibleCallback(boost::bind(&LLPanelTopInfoBar::onVisibilityChanged, this, _2));
 
-    return TRUE;
+    return true;
 }
 
 void LLPanelTopInfoBar::onNavBarShowParcelPropertiesCtrlChanged()
@@ -241,7 +241,7 @@ void LLPanelTopInfoBar::setParcelInfoText(const std::string& new_text)
     LLRect rect = mParcelInfoText->getRect();
     rect.setOriginAndSize(rect.mLeft, rect.mBottom, new_text_width, rect.getHeight());
 
-    mParcelInfoText->reshape(rect.getWidth(), rect.getHeight(), TRUE);
+    mParcelInfoText->reshape(rect.getWidth(), rect.getHeight(), true);
     mParcelInfoText->setRect(rect);
     layoutParcelIcons();
 
diff --git a/indra/newview/llpaneltopinfobar.h b/indra/newview/llpaneltopinfobar.h
index 0f072db175..f4238ad5e7 100644
--- a/indra/newview/llpaneltopinfobar.h
+++ b/indra/newview/llpaneltopinfobar.h
@@ -46,8 +46,8 @@ class LLPanelTopInfoBar : public LLPanel, public LLSingleton<LLPanelTopInfoBar>,
 public:
     typedef boost::signals2::signal<void ()> resize_signal_t;
 
-    /*virtual*/ BOOL postBuild() override;
-    /*virtual*/ void draw() override;
+    bool postBuild() override;
+    void draw() override;
 
     /**
      * Updates location and parcel icons on login complete
@@ -83,7 +83,7 @@ private:
      */
     void initParcelIcons();
 
-    BOOL handleRightMouseDown(S32 x, S32 y, MASK mask) override;
+    bool handleRightMouseDown(S32 x, S32 y, MASK mask) override;
 
     /**
      * Handles clicks on the parcel icons.
@@ -158,7 +158,7 @@ private:
     {
         if (LLPanelTopInfoBar::instanceExists())
         {
-            LLPanelTopInfoBar::getInstance()->setEnabled(FALSE);
+            LLPanelTopInfoBar::getInstance()->setEnabled(false);
         }
     }
 
diff --git a/indra/newview/llpanelvoicedevicesettings.cpp b/indra/newview/llpanelvoicedevicesettings.cpp
index 1a9c5716dc..60877494e7 100644
--- a/indra/newview/llpanelvoicedevicesettings.cpp
+++ b/indra/newview/llpanelvoicedevicesettings.cpp
@@ -51,7 +51,7 @@ LLPanelVoiceDeviceSettings::LLPanelVoiceDeviceSettings()
     mCtrlOutputDevices = NULL;
     mInputDevice = gSavedSettings.getString("VoiceInputAudioDevice");
     mOutputDevice = gSavedSettings.getString("VoiceOutputAudioDevice");
-    mDevicesUpdated = FALSE;  //obsolete
+    mDevicesUpdated = false;  //obsolete
     mUseTuningMode = true;
 
     // grab "live" mic volume level
@@ -63,7 +63,7 @@ LLPanelVoiceDeviceSettings::~LLPanelVoiceDeviceSettings()
 {
 }
 
-BOOL LLPanelVoiceDeviceSettings::postBuild()
+bool LLPanelVoiceDeviceSettings::postBuild()
 {
     LLSlider* volume_slider = getChild<LLSlider>("mic_volume_slider");
     // set mic volume tuning slider based on last mic volume setting
@@ -88,11 +88,11 @@ BOOL LLPanelVoiceDeviceSettings::postBuild()
     mCtrlInputDevices->setMouseDownCallback(boost::bind(&LLPanelVoiceDeviceSettings::onInputDevicesClicked, this));
 
 
-    return TRUE;
+    return true;
 }
 
 // virtual
-void LLPanelVoiceDeviceSettings::onVisibilityChange ( BOOL new_visibility )
+void LLPanelVoiceDeviceSettings::onVisibilityChange ( bool new_visibility )
 {
     if (new_visibility)
     {
@@ -103,7 +103,7 @@ void LLPanelVoiceDeviceSettings::onVisibilityChange ( BOOL new_visibility )
         cleanup();
         // when closing this window, turn of visiblity control so that
         // next time preferences is opened we don't suspend voice
-        gSavedSettings.setBOOL("ShowDeviceSettings", FALSE);
+        gSavedSettings.setBOOL("ShowDeviceSettings", false);
     }
 }
 void LLPanelVoiceDeviceSettings::draw()
@@ -116,12 +116,12 @@ void LLPanelVoiceDeviceSettings::draw()
     if (voice_enabled)
     {
         getChildView("wait_text")->setVisible( !is_in_tuning_mode && mUseTuningMode);
-        getChildView("disabled_text")->setVisible(FALSE);
-        mUnmuteBtn->setVisible(FALSE);
+        getChildView("disabled_text")->setVisible(false);
+        mUnmuteBtn->setVisible(false);
     }
     else
     {
-        getChildView("wait_text")->setVisible(FALSE);
+        getChildView("wait_text")->setVisible(false);
 
         static LLCachedControl<bool> chat_enabled(gSavedSettings, "EnableVoiceChat");
         // If voice isn't enabled, it is either disabled or muted
@@ -144,7 +144,7 @@ void LLPanelVoiceDeviceSettings::draw()
             LLView* bar_view = getChild<LLView>(view_name);
             if (bar_view)
             {
-                gl_rect_2d(bar_view->getRect(), LLColor4::grey, TRUE);
+                gl_rect_2d(bar_view->getRect(), LLColor4::grey, true);
 
                 LLColor4 color;
                 if (power_bar_idx < discrete_power)
@@ -158,7 +158,7 @@ void LLPanelVoiceDeviceSettings::draw()
 
                 LLRect color_rect = bar_view->getRect();
                 color_rect.stretch(-1);
-                gl_rect_2d(color_rect, color, TRUE);
+                gl_rect_2d(color_rect, color, true);
             }
         }
     }
@@ -267,7 +267,7 @@ void LLPanelVoiceDeviceSettings::refresh()
                 }
 
                 // Fix invalid input audio device preference.
-                if (!mCtrlInputDevices->setSelectedByValue(mInputDevice, TRUE))
+                if (!mCtrlInputDevices->setSelectedByValue(mInputDevice, true))
                 {
                     mCtrlInputDevices->setValue(DEFAULT_DEVICE);
                     gSavedSettings.setString("VoiceInputAudioDevice", DEFAULT_DEVICE);
@@ -290,7 +290,7 @@ void LLPanelVoiceDeviceSettings::refresh()
                 }
 
                 // Fix invalid output audio device preference.
-                if (!mCtrlOutputDevices->setSelectedByValue(mOutputDevice, TRUE))
+                if (!mCtrlOutputDevices->setSelectedByValue(mOutputDevice, true))
                 {
                     mCtrlOutputDevices->setValue(DEFAULT_DEVICE);
                     gSavedSettings.setString("VoiceOutputAudioDevice", DEFAULT_DEVICE);
@@ -371,5 +371,5 @@ void LLPanelVoiceDeviceSettings::onInputDevicesClicked()
 
 void LLPanelVoiceDeviceSettings::onCommitUnmute()
 {
-    gSavedSettings.setBOOL("EnableVoiceChat", TRUE);
+    gSavedSettings.setBOOL("EnableVoiceChat", true);
 }
diff --git a/indra/newview/llpanelvoicedevicesettings.h b/indra/newview/llpanelvoicedevicesettings.h
index 1c170b135c..815396cbd1 100644
--- a/indra/newview/llpanelvoicedevicesettings.h
+++ b/indra/newview/llpanelvoicedevicesettings.h
@@ -37,14 +37,14 @@ public:
     ~LLPanelVoiceDeviceSettings();
 
     /*virtual*/ void draw();
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     void apply();
     void cancel();
     void refresh();
     void initialize();
     void cleanup();
 
-    /*virtual*/ void onVisibilityChange ( BOOL new_visibility );
+    /*virtual*/ void onVisibilityChange ( bool new_visibility );
 
     void setUseTuningMode(bool use) { mUseTuningMode = use; };
 
@@ -63,7 +63,7 @@ protected:
     class LLComboBox        *mCtrlInputDevices;
     class LLComboBox        *mCtrlOutputDevices;
     class LLButton          *mUnmuteBtn;
-    BOOL mDevicesUpdated;
+    bool mDevicesUpdated;
     bool mUseTuningMode;
     std::map<std::string, std::string> mLocalizedDeviceNames;
 };
diff --git a/indra/newview/llpanelvoiceeffect.cpp b/indra/newview/llpanelvoiceeffect.cpp
index 681d35dafc..a0129b2cb1 100644
--- a/indra/newview/llpanelvoiceeffect.cpp
+++ b/indra/newview/llpanelvoiceeffect.cpp
@@ -61,7 +61,7 @@ LLPanelVoiceEffect::~LLPanelVoiceEffect()
 }
 
 // virtual
-BOOL LLPanelVoiceEffect::postBuild()
+bool LLPanelVoiceEffect::postBuild()
 {
     mVoiceEffectCombo = getChild<LLComboBox>("voice_effect");
 
@@ -78,7 +78,7 @@ BOOL LLPanelVoiceEffect::postBuild()
 
     update(true);
 
-    return TRUE;
+    return true;
 }
 
 //////////////////////////////////////////////////////////////////////////
diff --git a/indra/newview/llpanelvoiceeffect.h b/indra/newview/llpanelvoiceeffect.h
index 4acb8abca2..f920e41081 100644
--- a/indra/newview/llpanelvoiceeffect.h
+++ b/indra/newview/llpanelvoiceeffect.h
@@ -43,14 +43,14 @@ public:
     LLPanelVoiceEffect();
     virtual ~LLPanelVoiceEffect();
 
-    virtual BOOL postBuild();
+    bool postBuild() override;
 
 private:
     void onCommitVoiceEffect();
     void update(bool list_updated);
 
     /// Called by voice effect provider when voice effect list is changed.
-    virtual void onVoiceEffectChanged(bool effect_list_updated);
+    void onVoiceEffectChanged(bool effect_list_updated) override;
 
     // Fixed entries in the Voice Morph list
     typedef enum e_voice_effect_combo_items
diff --git a/indra/newview/llpanelvolume.cpp b/indra/newview/llpanelvolume.cpp
index 701882ac57..16c38bf1f0 100644
--- a/indra/newview/llpanelvolume.cpp
+++ b/indra/newview/llpanelvolume.cpp
@@ -90,7 +90,7 @@ const F32 DEFAULT_GRAVITY_MULTIPLIER = 1.f;
 const F32 DEFAULT_DENSITY = 1000.f;
 
 // "Features" Tab
-BOOL    LLPanelVolume::postBuild()
+bool    LLPanelVolume::postBuild()
 {
     // Flexible Objects Parameters
     {
@@ -213,14 +213,14 @@ BOOL    LLPanelVolume::postBuild()
     // Start with everyone disabled
     clearCtrls();
 
-    return TRUE;
+    return true;
 }
 
 LLPanelVolume::LLPanelVolume()
     : LLPanel(),
       mComboMaterialItemCount(0)
 {
-    setMouseOpaque(FALSE);
+    setMouseOpaque(false);
 
     mCommitCallbackRegistrar.add("PanelVolume.menuDoToSelected", boost::bind(&LLPanelVolume::menuDoToSelected, this, _2));
     mEnableCallbackRegistrar.add("PanelVolume.menuEnable", boost::bind(&LLPanelVolume::menuEnableItem, this, _2));
@@ -285,10 +285,10 @@ void LLPanelVolume::getState( )
     LLSelectMgr::getInstance()->selectGetOwner(owner_id, owner_name);
 
     // BUG? Check for all objects being editable?
-    BOOL editable = root_objectp->permModify() && !root_objectp->isPermanentEnforced();
-    BOOL single_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME )
+    bool editable = root_objectp->permModify() && !root_objectp->isPermanentEnforced();
+    bool single_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME )
         && LLSelectMgr::getInstance()->getSelection()->getObjectCount() == 1;
-    BOOL single_root_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME ) &&
+    bool single_root_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME ) &&
         LLSelectMgr::getInstance()->getSelection()->getRootObjectCount() == 1;
 
     // Select Single Message
@@ -306,26 +306,26 @@ void LLPanelVolume::getState( )
     }
 
     // Light properties
-    BOOL is_light = volobjp && volobjp->getIsLight();
+    bool is_light = volobjp && volobjp->getIsLight();
     getChild<LLUICtrl>("Light Checkbox Ctrl")->setValue(is_light);
     getChildView("Light Checkbox Ctrl")->setEnabled(editable && single_volume && volobjp);
 
     if (is_light && editable && single_volume)
     {
-        //mLabelColor        ->setEnabled( TRUE );
+        //mLabelColor        ->setEnabled( true );
         LLColorSwatchCtrl* LightColorSwatch = getChild<LLColorSwatchCtrl>("colorswatch");
         if(LightColorSwatch)
         {
-            LightColorSwatch->setEnabled( TRUE );
-            LightColorSwatch->setValid( TRUE );
+            LightColorSwatch->setEnabled( true );
+            LightColorSwatch->setValid( true );
             LightColorSwatch->set(volobjp->getLightSRGBBaseColor());
         }
 
         LLTextureCtrl* LightTextureCtrl = getChild<LLTextureCtrl>("light texture control");
         if (LightTextureCtrl)
         {
-            LightTextureCtrl->setEnabled(TRUE);
-            LightTextureCtrl->setValid(TRUE);
+            LightTextureCtrl->setEnabled(true);
+            LightTextureCtrl->setValid(true);
             LightTextureCtrl->setImageAssetID(volobjp->getLightTextureID());
         }
 
@@ -357,14 +357,14 @@ void LLPanelVolume::getState( )
         LLColorSwatchCtrl* LightColorSwatch = getChild<LLColorSwatchCtrl>("colorswatch");
         if(LightColorSwatch)
         {
-            LightColorSwatch->setEnabled( FALSE );
-            LightColorSwatch->setValid( FALSE );
+            LightColorSwatch->setEnabled( false );
+            LightColorSwatch->setValid( false );
         }
         LLTextureCtrl* LightTextureCtrl = getChild<LLTextureCtrl>("light texture control");
         if (LightTextureCtrl)
         {
-            LightTextureCtrl->setEnabled(FALSE);
-            LightTextureCtrl->setValid(FALSE);
+            LightTextureCtrl->setEnabled(false);
+            LightTextureCtrl->setValid(false);
 
             if (objectp->isAttachment())
             {
@@ -386,7 +386,7 @@ void LLPanelVolume::getState( )
     }
 
     // Reflection Probe
-    BOOL is_probe = volobjp && volobjp->isReflectionProbe();
+    bool is_probe = volobjp && volobjp->isReflectionProbe();
     bool is_mirror = volobjp && volobjp->getReflectionProbeIsMirror();
     getChild<LLUICtrl>("Reflection Probe")->setValue(is_probe);
     getChildView("Reflection Probe")->setEnabled(editable && single_volume && volobjp && !volobjp->isMesh());
@@ -442,9 +442,6 @@ void LLPanelVolume::getState( )
             update_type = "Dynamic Mirror";
         }
 
-        getChildView("Probe Ambiance")->setEnabled(!is_mirror);
-        getChildView("Probe Near Clip")->setEnabled(!is_mirror);
-
         getChild<LLComboBox>("Probe Volume Type", true)->setValue(volume_type);
         getChild<LLSpinCtrl>("Probe Ambiance", true)->setValue(volobjp->getReflectionProbeAmbiance());
         getChild<LLSpinCtrl>("Probe Near Clip", true)->setValue(volobjp->getReflectionProbeNearClip());
@@ -452,9 +449,9 @@ void LLPanelVolume::getState( )
     }
 
     // Animated Mesh
-    BOOL is_animated_mesh = single_root_volume && root_volobjp && root_volobjp->isAnimatedObject();
+    bool is_animated_mesh = single_root_volume && root_volobjp && root_volobjp->isAnimatedObject();
     getChild<LLUICtrl>("Animated Mesh Checkbox Ctrl")->setValue(is_animated_mesh);
-    BOOL enabled_animated_object_box = FALSE;
+    bool enabled_animated_object_box = false;
     if (root_volobjp && root_volobjp == volobjp)
     {
         enabled_animated_object_box = single_root_volume && root_volobjp && root_volobjp->canBeAnimatedObject() && editable;
@@ -502,7 +499,7 @@ void LLPanelVolume::getState( )
     }
 
     // Flexible properties
-    BOOL is_flexible = volobjp && volobjp->isFlexible();
+    bool is_flexible = volobjp && volobjp->isFlexible();
     getChild<LLUICtrl>("Flexible1D Checkbox Ctrl")->setValue(is_flexible);
     if (is_flexible || (volobjp && volobjp->canBeFlexible()))
     {
@@ -580,7 +577,7 @@ void LLPanelVolume::getState( )
     std::string LEGACY_FULLBRIGHT_DESC = LLTrans::getString("Fullbright");
     if (editable && single_volume && material_same)
     {
-        mComboMaterial->setEnabled( TRUE );
+        mComboMaterial->setEnabled( true );
         if (material_code == LL_MCODE_LIGHT)
         {
             if (mComboMaterial->getItemCount() == mComboMaterialItemCount)
@@ -601,7 +598,7 @@ void LLPanelVolume::getState( )
     }
     else
     {
-        mComboMaterial->setEnabled( FALSE );
+        mComboMaterial->setEnabled( false );
     }
 
     // Physics properties
@@ -622,7 +619,7 @@ void LLPanelVolume::getState( )
     mComboPhysicsShapeType->removeall();
     mComboPhysicsShapeType->add(getString("None"), LLSD(1));
 
-    BOOL isMesh = FALSE;
+    bool isMesh = false;
     LLSculptParams *sculpt_params = (LLSculptParams *)objectp->getParameterEntry(LLNetworkData::PARAMS_SCULPT);
     if (sculpt_params)
     {
@@ -663,7 +660,7 @@ void LLPanelVolume::getState( )
 bool LLPanelVolume::precommitValidate( const LLSD& data )
 {
     // TODO: Richard will fill this in later.
-    return TRUE; // FALSE means that validation failed and new value should not be commited.
+    return true; // false means that validation failed and new value should not be commited.
 }
 
 
@@ -719,14 +716,14 @@ void LLPanelVolume::clearCtrls()
     LLColorSwatchCtrl* LightColorSwatch = getChild<LLColorSwatchCtrl>("colorswatch");
     if(LightColorSwatch)
     {
-        LightColorSwatch->setEnabled( FALSE );
-        LightColorSwatch->setValid( FALSE );
+        LightColorSwatch->setEnabled( false );
+        LightColorSwatch->setValid( false );
     }
     LLTextureCtrl* LightTextureCtrl = getChild<LLTextureCtrl>("light texture control");
     if(LightTextureCtrl)
     {
-        LightTextureCtrl->setEnabled( FALSE );
-        LightTextureCtrl->setValid( FALSE );
+        LightTextureCtrl->setEnabled( false );
+        LightTextureCtrl->setValid( false );
     }
 
     getChildView("Light Intensity")->setEnabled(false);
@@ -749,12 +746,12 @@ void LLPanelVolume::clearCtrls()
     getChildView("FlexForceY")->setEnabled(false);
     getChildView("FlexForceZ")->setEnabled(false);
 
-    mSpinPhysicsGravity->setEnabled(FALSE);
-    mSpinPhysicsFriction->setEnabled(FALSE);
-    mSpinPhysicsDensity->setEnabled(FALSE);
-    mSpinPhysicsRestitution->setEnabled(FALSE);
+    mSpinPhysicsGravity->setEnabled(false);
+    mSpinPhysicsFriction->setEnabled(false);
+    mSpinPhysicsDensity->setEnabled(false);
+    mSpinPhysicsRestitution->setEnabled(false);
 
-    mComboMaterial->setEnabled( FALSE );
+    mComboMaterial->setEnabled( false );
 }
 
 //
@@ -770,7 +767,7 @@ void LLPanelVolume::sendIsLight()
     }
     LLVOVolume *volobjp = (LLVOVolume *)objectp;
 
-    BOOL value = getChild<LLUICtrl>("Light Checkbox Ctrl")->getValue();
+    bool value = getChild<LLUICtrl>("Light Checkbox Ctrl")->getValue();
     volobjp->setIsLight(value);
     LL_INFOS() << "update light sent" << LL_ENDL;
 }
@@ -792,8 +789,8 @@ void LLPanelVolume::sendIsReflectionProbe()
     }
     LLVOVolume* volobjp = (LLVOVolume*)objectp;
 
-    BOOL value = getChild<LLUICtrl>("Reflection Probe")->getValue();
-    BOOL old_value = volobjp->isReflectionProbe();
+    bool value = getChild<LLUICtrl>("Reflection Probe")->getValue();
+    bool old_value = volobjp->isReflectionProbe();
 
     if (value && value != old_value)
     { // defer to notification util as to whether or not we *really* make this object a reflection probe
@@ -812,7 +809,7 @@ void LLPanelVolume::sendIsReflectionProbe()
             if (in_linkeset)
             {
                 // In linkset with a phantom flag
-                objectp->setFlags(FLAGS_PHANTOM, FALSE);
+                objectp->setFlags(FLAGS_PHANTOM, false);
             }
         }
         volobjp->setIsReflectionProbe(value);
@@ -865,8 +862,8 @@ void LLPanelVolume::sendIsFlexible()
     }
     LLVOVolume *volobjp = (LLVOVolume *)objectp;
 
-    BOOL is_flexible = getChild<LLUICtrl>("Flexible1D Checkbox Ctrl")->getValue();
-    //BOOL is_flexible = mCheckFlexible1D->get();
+    bool is_flexible = getChild<LLUICtrl>("Flexible1D Checkbox Ctrl")->getValue();
+    //bool is_flexible = mCheckFlexible1D->get();
 
     if (is_flexible)
     {
@@ -1084,10 +1081,10 @@ void LLPanelVolume::onPasteFeatures()
     bool is_root = objectp->isRoot();
 
     // Not sure if phantom should go under physics, but doesn't fit elsewhere
-    BOOL is_phantom = clipboard["is_phantom"].asBoolean() && is_root;
+    bool is_phantom = clipboard["is_phantom"].asBoolean() && is_root;
     LLSelectMgr::getInstance()->selectionUpdatePhantom(is_phantom);
 
-    BOOL is_physical = clipboard["is_physical"].asBoolean() && is_root;
+    bool is_physical = clipboard["is_physical"].asBoolean() && is_root;
     LLSelectMgr::getInstance()->selectionUpdatePhysics(is_physical);
 
     if (clipboard.has("physics"))
@@ -1102,7 +1099,7 @@ void LLPanelVolume::onPasteFeatures()
         objectp->setPhysicsFriction(clipboard["physics"]["friction"].asReal());
         objectp->setPhysicsDensity(clipboard["physics"]["density"].asReal());
         objectp->setPhysicsRestitution(clipboard["physics"]["restitution"].asReal());
-        objectp->updateFlags(TRUE);
+        objectp->updateFlags(true);
     }
 
     // Flexible
@@ -1110,7 +1107,7 @@ void LLPanelVolume::onPasteFeatures()
     if (is_flexible && volobjp->canBeFlexible())
     {
         LLVOVolume *volobjp = (LLVOVolume *)objectp;
-        BOOL update_shape = FALSE;
+        bool update_shape = false;
 
         // do before setParameterEntry or it will think that it is already flexi
         update_shape = volobjp->setIsFlexible(is_flexible);
@@ -1230,7 +1227,7 @@ void LLPanelVolume::onPasteLight()
     {
         if (clipboard.has("light"))
         {
-            volobjp->setIsLight(TRUE);
+            volobjp->setIsLight(true);
             volobjp->setLightIntensity((F32)clipboard["light"]["intensity"].asReal());
             volobjp->setLightRadius((F32)clipboard["light"]["radius"].asReal());
             volobjp->setLightFalloff((F32)clipboard["light"]["falloff"].asReal());
@@ -1241,7 +1238,7 @@ void LLPanelVolume::onPasteLight()
         }
         else
         {
-            volobjp->setIsLight(FALSE);
+            volobjp->setIsLight(false);
         }
 
         if (clipboard.has("spot"))
@@ -1256,7 +1253,7 @@ void LLPanelVolume::onPasteLight()
 
         if (clipboard.has("reflection_probe"))
         {
-            volobjp->setIsReflectionProbe(TRUE);
+            volobjp->setIsReflectionProbe(true);
             volobjp->setReflectionProbeIsBox(clipboard["reflection_probe"]["is_box"].asBoolean());
             volobjp->setReflectionProbeAmbiance((F32)clipboard["reflection_probe"]["ambiance"].asReal());
             volobjp->setReflectionProbeNearClip((F32)clipboard["reflection_probe"]["near_clip"].asReal());
@@ -1272,7 +1269,7 @@ void LLPanelVolume::onPasteLight()
                 if (in_linkeset)
                 {
                     // In linkset with a phantom flag
-                    objectp->setFlags(FLAGS_PHANTOM, FALSE);
+                    objectp->setFlags(FLAGS_PHANTOM, false);
                 }
             }
 
@@ -1408,9 +1405,9 @@ void LLPanelVolume::onCommitLight( LLUICtrl* ctrl, void* userdata )
         else if (volobjp->isLightSpotlight())
         { //no longer a spot light
             setLightTextureID(id, item_id, volobjp);
-            //self->getChildView("Light FOV")->setEnabled(FALSE);
-            //self->getChildView("Light Focus")->setEnabled(FALSE);
-            //self->getChildView("Light Ambiance")->setEnabled(FALSE);
+            //self->getChildView("Light FOV")->setEnabled(false);
+            //self->getChildView("Light Focus")->setEnabled(false);
+            //self->getChildView("Light Ambiance")->setEnabled(false);
         }
     }
 
@@ -1464,7 +1461,7 @@ void LLPanelVolume::onCommitProbe(LLUICtrl* ctrl, void* userdata)
             path = LL_PCODE_PATH_CIRCLE;
 
             F32 scale = volobjp->getScale().mV[0];
-            volobjp->setScale(LLVector3(scale, scale, scale), FALSE);
+            volobjp->setScale(LLVector3(scale, scale, scale), false);
             LLSelectMgr::getInstance()->sendMultipleUpdate(UPD_ROTATION | UPD_POSITION | UPD_SCALE);
         }
         else
@@ -1498,7 +1495,7 @@ void LLPanelVolume::setLightTextureID(const LLUUID &asset_id, const LLUUID &item
         if (item && volobjp->isAttachment())
         {
             const LLPermissions& perm = item->getPermissions();
-            BOOL unrestricted = ((perm.getMaskBase() & PERM_ITEM_UNRESTRICTED) == PERM_ITEM_UNRESTRICTED) ? TRUE : FALSE;
+            bool unrestricted = (perm.getMaskBase() & PERM_ITEM_UNRESTRICTED) == PERM_ITEM_UNRESTRICTED;
             if (!unrestricted)
             {
                 // Attachments are in world and in inventory simultaneously,
@@ -1511,6 +1508,7 @@ void LLPanelVolume::setLightTextureID(const LLUUID &asset_id, const LLUUID &item
         {
             LLToolDragAndDrop::handleDropMaterialProtections(volobjp, item, LLToolDragAndDrop::SOURCE_AGENT, LLUUID::null);
         }
+
         volobjp->setLightTextureID(asset_id);
     }
 }
@@ -1568,7 +1566,7 @@ void LLPanelVolume::onCommitAnimatedMeshCheckbox(LLUICtrl *, void*)
         return;
     }
     LLVOVolume *volobjp = (LLVOVolume *)objectp;
-    BOOL animated_mesh = getChild<LLUICtrl>("Animated Mesh Checkbox Ctrl")->getValue();
+    bool animated_mesh = getChild<LLUICtrl>("Animated Mesh Checkbox Ctrl")->getValue();
     U32 flags = volobjp->getExtendedMeshFlags();
     U32 new_flags = flags;
     if (animated_mesh)
@@ -1627,6 +1625,6 @@ void LLPanelVolume::handleResponseChangeToFlexible(const LLSD &pNotification, co
     }
     else
     {
-        getChild<LLUICtrl>("Flexible1D Checkbox Ctrl")->setValue(FALSE);
+        getChild<LLUICtrl>("Flexible1D Checkbox Ctrl")->setValue(false);
     }
 }
diff --git a/indra/newview/llpanelvolume.h b/indra/newview/llpanelvolume.h
index 37b7b13d44..7e31a3135b 100644
--- a/indra/newview/llpanelvolume.h
+++ b/indra/newview/llpanelvolume.h
@@ -52,7 +52,7 @@ public:
     virtual void    draw();
     virtual void    clearCtrls();
 
-    virtual BOOL    postBuild();
+    virtual bool    postBuild();
 
     void            refresh();
 
diff --git a/indra/newview/llpanelvolumepulldown.cpp b/indra/newview/llpanelvolumepulldown.cpp
index 553decca2c..046bcd7f59 100644
--- a/indra/newview/llpanelvolumepulldown.cpp
+++ b/indra/newview/llpanelvolumepulldown.cpp
@@ -55,7 +55,7 @@ LLPanelVolumePulldown::LLPanelVolumePulldown()
     buildFromFile( "panel_volume_pulldown.xml");
 }
 
-BOOL LLPanelVolumePulldown::postBuild()
+bool LLPanelVolumePulldown::postBuild()
 {
     return LLPanelPulldown::postBuild();
 }
@@ -63,7 +63,7 @@ BOOL LLPanelVolumePulldown::postBuild()
 void LLPanelVolumePulldown::onAdvancedButtonClick(const LLSD& user_data)
 {
     // close the global volume minicontrol, we're bringing up the big one
-    setVisible(FALSE);
+    setVisible(false);
 
     // bring up the prefs floater
     LLFloaterPreference* prefsfloater = dynamic_cast<LLFloaterPreference*>
@@ -87,7 +87,7 @@ void LLPanelVolumePulldown::setControlFalse(const LLSD& user_data)
     LLControlVariable* control = findControl(control_name);
 
     if (control)
-        control->set(LLSD(FALSE));
+        control->set(LLSD(false));
 }
 
 void LLPanelVolumePulldown::updateCheckbox(LLUICtrl* ctrl, const LLSD& user_data)
diff --git a/indra/newview/llpanelvolumepulldown.h b/indra/newview/llpanelvolumepulldown.h
index a2816db747..2ebac06972 100644
--- a/indra/newview/llpanelvolumepulldown.h
+++ b/indra/newview/llpanelvolumepulldown.h
@@ -36,7 +36,7 @@ class LLPanelVolumePulldown : public LLPanelPulldown
 {
  public:
     LLPanelVolumePulldown();
-    /*virtual*/ BOOL postBuild();
+    bool postBuild() override;
 
  private:
     void setControlFalse(const LLSD& user_data);
diff --git a/indra/newview/llpanelwearing.cpp b/indra/newview/llpanelwearing.cpp
index 9a7281cda4..c1534c9abd 100644
--- a/indra/newview/llpanelwearing.cpp
+++ b/indra/newview/llpanelwearing.cpp
@@ -193,15 +193,15 @@ protected:
 
     void updateMenuItemsVisibility(LLContextMenu* menu)
     {
-        menu->setItemVisible("touch_attach", TRUE);
+        menu->setItemVisible("touch_attach", true);
         menu->setItemEnabled("touch_attach", 1 == mUUIDs.size());
-        menu->setItemVisible("edit_item", TRUE);
+        menu->setItemVisible("edit_item", true);
         menu->setItemEnabled("edit_item", 1 == mUUIDs.size());
-        menu->setItemVisible("take_off", FALSE);
-        menu->setItemVisible("detach", TRUE);
-        menu->setItemVisible("edit_outfit_separator", FALSE);
-        menu->setItemVisible("show_original", FALSE);
-        menu->setItemVisible("edit_outfit", FALSE);
+        menu->setItemVisible("take_off", false);
+        menu->setItemVisible("detach", true);
+        menu->setItemVisible("edit_outfit_separator", false);
+        menu->setItemVisible("show_original", false);
+        menu->setItemVisible("edit_outfit", false);
     }
 
     LLPanelWearing*         mPanelWearing;
@@ -234,7 +234,7 @@ LLPanelWearing::~LLPanelWearing()
     }
 }
 
-BOOL LLPanelWearing::postBuild()
+bool LLPanelWearing::postBuild()
 {
     mAccordionCtrl = getChild<LLAccordionCtrl>("wearables_accordion");
     mWearablesTab = getChild<LLAccordionCtrlTab>("tab_wearables");
@@ -253,7 +253,7 @@ BOOL LLPanelWearing::postBuild()
 
     menu_gear_btn->setMenu(mGearMenu->getMenu());
 
-    return TRUE;
+    return true;
 }
 
 //virtual
@@ -478,11 +478,11 @@ void LLPanelWearing::getAttachmentLimitsCoro(std::string url)
 void LLPanelWearing::setAttachmentDetails(LLSD content)
 {
     mObjectNames.clear();
-    S32 number_attachments = content["attachments"].size();
-    for(int i = 0; i < number_attachments; i++)
+    auto number_attachments = content["attachments"].size();
+    for(size_t i = 0; i < number_attachments; i++)
     {
-        S32 number_objects = content["attachments"][i]["objects"].size();
-        for(int j = 0; j < number_objects; j++)
+        auto number_objects = content["attachments"][i]["objects"].size();
+        for(size_t j = 0; j < number_objects; j++)
         {
             LLUUID task_id = content["attachments"][i]["objects"][j]["id"].asUUID();
             std::string name = content["attachments"][i]["objects"][j]["name"].asString();
@@ -594,6 +594,6 @@ void LLPanelWearing::copyToClipboard()
         }
     }
 
-    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(text),0,text.size());
+    LLClipboard::instance().copyToClipboard(utf8str_to_wstring(text), 0, static_cast<S32>(text.size()));
 }
 // EOF
diff --git a/indra/newview/llpanelwearing.h b/indra/newview/llpanelwearing.h
index bc1d0afc1b..ea0787d0ef 100644
--- a/indra/newview/llpanelwearing.h
+++ b/indra/newview/llpanelwearing.h
@@ -55,7 +55,7 @@ public:
     LLPanelWearing();
     virtual ~LLPanelWearing();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     /*virtual*/ void draw();
 
diff --git a/indra/newview/llparcelselection.cpp b/indra/newview/llparcelselection.cpp
index 12ac947dea..3bfa886bfe 100644
--- a/indra/newview/llparcelselection.cpp
+++ b/indra/newview/llparcelselection.cpp
@@ -36,8 +36,8 @@
 //
 LLParcelSelection::LLParcelSelection() :
     mParcel(NULL),
-    mSelectedMultipleOwners(FALSE),
-    mWholeParcelSelected(FALSE),
+    mSelectedMultipleOwners(false),
+    mWholeParcelSelected(false),
     mSelectedSelfCount(0),
     mSelectedOtherCount(0),
     mSelectedPublicCount(0)
@@ -46,8 +46,8 @@ LLParcelSelection::LLParcelSelection() :
 
 LLParcelSelection::LLParcelSelection(LLParcel* parcel)  :
     mParcel(parcel),
-    mSelectedMultipleOwners(FALSE),
-    mWholeParcelSelected(FALSE),
+    mSelectedMultipleOwners(false),
+    mWholeParcelSelected(false),
     mSelectedSelfCount(0),
     mSelectedOtherCount(0),
     mSelectedPublicCount(0)
@@ -58,13 +58,13 @@ LLParcelSelection::~LLParcelSelection()
 {
 }
 
-BOOL LLParcelSelection::getMultipleOwners() const
+bool LLParcelSelection::getMultipleOwners() const
 {
     return mSelectedMultipleOwners;
 }
 
 
-BOOL LLParcelSelection::getWholeParcelSelected() const
+bool LLParcelSelection::getWholeParcelSelected() const
 {
     return mWholeParcelSelected;
 }
diff --git a/indra/newview/llparcelselection.h b/indra/newview/llparcelselection.h
index ba2241bc40..f1b20572fc 100644
--- a/indra/newview/llparcelselection.h
+++ b/indra/newview/llparcelselection.h
@@ -57,18 +57,18 @@ public:
     bool    hasOthersSelected() const;
 
     // Does the selection have multiple land owners in it?
-    BOOL    getMultipleOwners() const;
+    bool    getMultipleOwners() const;
 
     // Is the entire parcel selected, or just a part?
-    BOOL    getWholeParcelSelected() const;
+    bool    getWholeParcelSelected() const;
 
 private:
     void setParcel(LLParcel* parcel) { mParcel = parcel; }
 
 private:
     LLParcel*   mParcel;
-    BOOL        mSelectedMultipleOwners;
-    BOOL        mWholeParcelSelected;
+    bool        mSelectedMultipleOwners;
+    bool        mWholeParcelSelected;
     S32         mSelectedSelfCount;
     S32         mSelectedOtherCount;
     S32         mSelectedPublicCount;
diff --git a/indra/newview/llpathfindingcharacter.cpp b/indra/newview/llpathfindingcharacter.cpp
index a376de10ae..66cc26469e 100644
--- a/indra/newview/llpathfindingcharacter.cpp
+++ b/indra/newview/llpathfindingcharacter.cpp
@@ -47,7 +47,7 @@
 LLPathfindingCharacter::LLPathfindingCharacter(const std::string &pUUID, const LLSD& pCharacterData)
     : LLPathfindingObject(pUUID, pCharacterData),
     mCPUTime(0U),
-    mIsHorizontal(FALSE),
+    mIsHorizontal(false),
     mLength(0.0f),
     mRadius(0.0f)
 {
diff --git a/indra/newview/llpathfindingcharacter.h b/indra/newview/llpathfindingcharacter.h
index ac5a113f96..ed621d975a 100644
--- a/indra/newview/llpathfindingcharacter.h
+++ b/indra/newview/llpathfindingcharacter.h
@@ -44,7 +44,7 @@ public:
 
     inline F32  getCPUTime() const   {return mCPUTime;};
 
-    inline BOOL isHorizontal() const {return mIsHorizontal;};
+    inline bool isHorizontal() const {return mIsHorizontal;};
     inline F32  getLength() const    {return mLength;};
     inline F32  getRadius() const    {return mRadius;};
 
@@ -55,7 +55,7 @@ private:
 
     F32  mCPUTime;
 
-    BOOL mIsHorizontal;
+    bool mIsHorizontal;
     F32  mLength;
     F32  mRadius;
 };
diff --git a/indra/newview/llpathfindinglinkset.cpp b/indra/newview/llpathfindinglinkset.cpp
index 8de7a57ae4..47400f9570 100644
--- a/indra/newview/llpathfindinglinkset.cpp
+++ b/indra/newview/llpathfindinglinkset.cpp
@@ -61,10 +61,10 @@ LLPathfindingLinkset::LLPathfindingLinkset(const LLSD& pTerrainData)
     : LLPathfindingObject(),
     mIsTerrain(true),
     mLandImpact(0U),
-    mIsModifiable(FALSE),
-    mCanBeVolume(FALSE),
-    mIsScripted(FALSE),
-    mHasIsScripted(TRUE),
+    mIsModifiable(false),
+    mCanBeVolume(false),
+    mIsScripted(false),
+    mHasIsScripted(true),
     mLinksetUse(kUnknown),
     mWalkabilityCoefficientA(MIN_WALKABILITY_VALUE),
     mWalkabilityCoefficientB(MIN_WALKABILITY_VALUE),
@@ -78,10 +78,10 @@ LLPathfindingLinkset::LLPathfindingLinkset(const std::string &pUUID, const LLSD&
     : LLPathfindingObject(pUUID, pLinksetData),
     mIsTerrain(false),
     mLandImpact(0U),
-    mIsModifiable(TRUE),
-    mCanBeVolume(TRUE),
-    mIsScripted(FALSE),
-    mHasIsScripted(FALSE),
+    mIsModifiable(true),
+    mCanBeVolume(true),
+    mIsScripted(false),
+    mHasIsScripted(false),
     mLinksetUse(kUnknown),
     mWalkabilityCoefficientA(MIN_WALKABILITY_VALUE),
     mWalkabilityCoefficientB(MIN_WALKABILITY_VALUE),
@@ -131,14 +131,14 @@ LLPathfindingLinkset& LLPathfindingLinkset::operator =(const LLPathfindingLinkse
     return *this;
 }
 
-BOOL LLPathfindingLinkset::isPhantom() const
+bool LLPathfindingLinkset::isPhantom() const
 {
     return isPhantom(getLinksetUse());
 }
 
 LLPathfindingLinkset::ELinksetUse LLPathfindingLinkset::getLinksetUseWithToggledPhantom(ELinksetUse pLinksetUse)
 {
-    BOOL isPhantom = LLPathfindingLinkset::isPhantom(pLinksetUse);
+    bool isPhantom = LLPathfindingLinkset::isPhantom(pLinksetUse);
     ENavMeshGenerationCategory navMeshGenerationCategory = getNavMeshGenerationCategory(pLinksetUse);
 
     return getLinksetUse(!isPhantom, navMeshGenerationCategory);
@@ -259,9 +259,9 @@ void LLPathfindingLinkset::parsePathfindingData(const LLSD &pLinksetData)
     llassert(mWalkabilityCoefficientD <= MAX_WALKABILITY_VALUE);
 }
 
-BOOL LLPathfindingLinkset::isPhantom(ELinksetUse pLinksetUse)
+bool LLPathfindingLinkset::isPhantom(ELinksetUse pLinksetUse)
 {
-    BOOL retVal;
+    bool retVal;
 
     switch (pLinksetUse)
     {
diff --git a/indra/newview/llpathfindinglinkset.h b/indra/newview/llpathfindinglinkset.h
index ef236d5949..0f2268861f 100644
--- a/indra/newview/llpathfindinglinkset.h
+++ b/indra/newview/llpathfindinglinkset.h
@@ -56,15 +56,15 @@ public:
 
     inline bool        isTerrain() const                   {return mIsTerrain;};
     inline U32         getLandImpact() const               {return mLandImpact;};
-    BOOL               isModifiable() const                {return mIsModifiable;};
-    BOOL               isPhantom() const;
-    BOOL               canBeVolume() const                 {return mCanBeVolume;};
+    bool               isModifiable() const                {return mIsModifiable;};
+    bool               isPhantom() const;
+    bool               canBeVolume() const                 {return mCanBeVolume;};
     static ELinksetUse getLinksetUseWithToggledPhantom(ELinksetUse pLinksetUse);
 
     inline ELinksetUse getLinksetUse() const               {return mLinksetUse;};
 
-    inline BOOL        isScripted() const                  {return mIsScripted;};
-    inline BOOL        hasIsScripted() const               {return mHasIsScripted;};
+    inline bool        isScripted() const                  {return mIsScripted;};
+    inline bool        hasIsScripted() const               {return mHasIsScripted;};
 
     inline S32         getWalkabilityCoefficientA() const  {return mWalkabilityCoefficientA;};
     inline S32         getWalkabilityCoefficientB() const  {return mWalkabilityCoefficientB;};
@@ -92,7 +92,7 @@ private:
     void                              parseLinksetData(const LLSD &pLinksetData);
     void                              parsePathfindingData(const LLSD &pLinksetData);
 
-    static BOOL                       isPhantom(ELinksetUse pLinksetUse);
+    static bool                       isPhantom(ELinksetUse pLinksetUse);
     static ELinksetUse                getLinksetUse(bool pIsPhantom, ENavMeshGenerationCategory pNavMeshGenerationCategory);
     static ENavMeshGenerationCategory getNavMeshGenerationCategory(ELinksetUse pLinksetUse);
     static LLSD                       convertCategoryToLLSD(ENavMeshGenerationCategory pNavMeshGenerationCategory);
@@ -100,10 +100,10 @@ private:
 
     bool         mIsTerrain;
     U32          mLandImpact;
-    BOOL         mIsModifiable;
-    BOOL         mCanBeVolume;
-    BOOL         mIsScripted;
-    BOOL         mHasIsScripted;
+    bool         mIsModifiable;
+    bool         mCanBeVolume;
+    bool         mIsScripted;
+    bool         mHasIsScripted;
     ELinksetUse  mLinksetUse;
     S32          mWalkabilityCoefficientA;
     S32          mWalkabilityCoefficientB;
diff --git a/indra/newview/llpathfindinglinksetlist.cpp b/indra/newview/llpathfindinglinksetlist.cpp
index ee68db759d..2012d7a094 100644
--- a/indra/newview/llpathfindinglinksetlist.cpp
+++ b/indra/newview/llpathfindinglinksetlist.cpp
@@ -141,15 +141,15 @@ bool LLPathfindingLinksetList::isShowCannotBeVolumeWarning(LLPathfindingLinkset:
     return isShowWarning;
 }
 
-void LLPathfindingLinksetList::determinePossibleStates(BOOL &pCanBeWalkable, BOOL &pCanBeStaticObstacle, BOOL &pCanBeDynamicObstacle,
-    BOOL &pCanBeMaterialVolume, BOOL &pCanBeExclusionVolume, BOOL &pCanBeDynamicPhantom) const
+void LLPathfindingLinksetList::determinePossibleStates(bool &pCanBeWalkable, bool &pCanBeStaticObstacle, bool &pCanBeDynamicObstacle,
+    bool &pCanBeMaterialVolume, bool &pCanBeExclusionVolume, bool &pCanBeDynamicPhantom) const
 {
-    pCanBeWalkable = FALSE;
-    pCanBeStaticObstacle = FALSE;
-    pCanBeDynamicObstacle = FALSE;
-    pCanBeMaterialVolume = FALSE;
-    pCanBeExclusionVolume = FALSE;
-    pCanBeDynamicPhantom = FALSE;
+    pCanBeWalkable = false;
+    pCanBeStaticObstacle = false;
+    pCanBeDynamicObstacle = false;
+    pCanBeMaterialVolume = false;
+    pCanBeExclusionVolume = false;
+    pCanBeDynamicPhantom = false;
 
     for (const_iterator objectIter = begin();
         !(pCanBeWalkable && pCanBeStaticObstacle && pCanBeDynamicObstacle && pCanBeMaterialVolume && pCanBeExclusionVolume && pCanBeDynamicPhantom) && (objectIter != end());
@@ -160,36 +160,36 @@ void LLPathfindingLinksetList::determinePossibleStates(BOOL &pCanBeWalkable, BOO
 
         if (linkset->isTerrain())
         {
-            pCanBeWalkable = TRUE;
+            pCanBeWalkable = true;
         }
         else
         {
             if (linkset->isModifiable())
             {
-                pCanBeWalkable = TRUE;
-                pCanBeStaticObstacle = TRUE;
-                pCanBeDynamicObstacle = TRUE;
-                pCanBeDynamicPhantom = TRUE;
+                pCanBeWalkable = true;
+                pCanBeStaticObstacle = true;
+                pCanBeDynamicObstacle = true;
+                pCanBeDynamicPhantom = true;
                 if (linkset->canBeVolume())
                 {
-                    pCanBeMaterialVolume = TRUE;
-                    pCanBeExclusionVolume = TRUE;
+                    pCanBeMaterialVolume = true;
+                    pCanBeExclusionVolume = true;
                 }
             }
             else if (linkset->isPhantom())
             {
-                pCanBeDynamicPhantom = TRUE;
+                pCanBeDynamicPhantom = true;
                 if (linkset->canBeVolume())
                 {
-                    pCanBeMaterialVolume = TRUE;
-                    pCanBeExclusionVolume = TRUE;
+                    pCanBeMaterialVolume = true;
+                    pCanBeExclusionVolume = true;
                 }
             }
             else
             {
-                pCanBeWalkable = TRUE;
-                pCanBeStaticObstacle = TRUE;
-                pCanBeDynamicObstacle = TRUE;
+                pCanBeWalkable = true;
+                pCanBeStaticObstacle = true;
+                pCanBeDynamicObstacle = true;
             }
         }
     }
diff --git a/indra/newview/llpathfindinglinksetlist.h b/indra/newview/llpathfindinglinksetlist.h
index ae68227824..12b418ada0 100644
--- a/indra/newview/llpathfindinglinksetlist.h
+++ b/indra/newview/llpathfindinglinksetlist.h
@@ -46,8 +46,8 @@ public:
     bool isShowPhantomToggleWarning(LLPathfindingLinkset::ELinksetUse pLinksetUse) const;
     bool isShowCannotBeVolumeWarning(LLPathfindingLinkset::ELinksetUse pLinksetUse) const;
 
-    void determinePossibleStates(BOOL &pCanBeWalkable, BOOL &pCanBeStaticObstacle, BOOL &pCanBeDynamicObstacle,
-        BOOL &pCanBeMaterialVolume, BOOL &pCanBeExclusionVolume, BOOL &pCanBeDynamicPhantom) const;
+    void determinePossibleStates(bool &pCanBeWalkable, bool &pCanBeStaticObstacle, bool &pCanBeDynamicObstacle,
+        bool &pCanBeMaterialVolume, bool &pCanBeExclusionVolume, bool &pCanBeDynamicPhantom) const;
 
 protected:
 
diff --git a/indra/newview/llpathfindingmanager.cpp b/indra/newview/llpathfindingmanager.cpp
index 7b7caa5a79..5e7bc4fb3b 100644
--- a/indra/newview/llpathfindingmanager.cpp
+++ b/indra/newview/llpathfindingmanager.cpp
@@ -363,7 +363,7 @@ void LLPathfindingManager::requestGetAgentState()
 
     if (currentRegion == NULL)
     {
-        mAgentStateSignal(FALSE);
+        mAgentStateSignal(false);
     }
     else
     {
@@ -373,7 +373,7 @@ void LLPathfindingManager::requestGetAgentState()
         }
         else if (!isPathfindingEnabledForRegion(currentRegion))
         {
-            mAgentStateSignal(FALSE);
+            mAgentStateSignal(false);
         }
         else
         {
@@ -708,7 +708,7 @@ void LLPathfindingManager::handleNavMeshStatusUpdate(const LLPathfindingNavMeshS
     }
 }
 
-void LLPathfindingManager::handleAgentState(BOOL pCanRebakeRegion)
+void LLPathfindingManager::handleAgentState(bool pCanRebakeRegion)
 {
     mAgentStateSignal(pCanRebakeRegion);
 }
@@ -831,7 +831,7 @@ void LLAgentStateChangeNode::post(ResponsePtr pResponse, const LLSD &pContext, c
     llassert(pInput.get(SIM_MESSAGE_BODY_FIELD).isMap());
     llassert(pInput.get(SIM_MESSAGE_BODY_FIELD).has(AGENT_STATE_CAN_REBAKE_REGION_FIELD));
     llassert(pInput.get(SIM_MESSAGE_BODY_FIELD).get(AGENT_STATE_CAN_REBAKE_REGION_FIELD).isBoolean());
-    BOOL canRebakeRegion = pInput.get(SIM_MESSAGE_BODY_FIELD).get(AGENT_STATE_CAN_REBAKE_REGION_FIELD).asBoolean();
+    bool canRebakeRegion = pInput.get(SIM_MESSAGE_BODY_FIELD).get(AGENT_STATE_CAN_REBAKE_REGION_FIELD).asBoolean();
 
     LLPathfindingManager::getInstance()->handleAgentState(canRebakeRegion);
 }
diff --git a/indra/newview/llpathfindingmanager.h b/indra/newview/llpathfindingmanager.h
index be03b161a0..663cb3cf34 100644
--- a/indra/newview/llpathfindingmanager.h
+++ b/indra/newview/llpathfindingmanager.h
@@ -83,8 +83,8 @@ public:
 
     void requestGetCharacters(request_id_t pRequestId, object_request_callback_t pCharactersCallback) const;
 
-    typedef boost::function<void (BOOL)>         agent_state_callback_t;
-    typedef boost::signals2::signal<void (BOOL)> agent_state_signal_t;
+    typedef boost::function<void (bool)>         agent_state_callback_t;
+    typedef boost::signals2::signal<void (bool)> agent_state_signal_t;
     typedef boost::signals2::connection          agent_state_slot_t;
 
     agent_state_slot_t registerAgentStateListener(agent_state_callback_t pAgentStateCallback);
@@ -114,7 +114,7 @@ private:
     //void handleNavMeshStatusRequest(const LLPathfindingNavMeshStatus &pNavMeshStatus, LLViewerRegion *pRegion, bool pIsGetStatusOnly);
     void handleNavMeshStatusUpdate(const LLPathfindingNavMeshStatus &pNavMeshStatus);
 
-    void handleAgentState(BOOL pCanRebakeRegion);
+    void handleAgentState(bool pCanRebakeRegion);
 
     LLPathfindingNavMeshPtr getNavMeshForRegion(const LLUUID &pRegionUUID);
     LLPathfindingNavMeshPtr getNavMeshForRegion(LLViewerRegion *pRegion);
diff --git a/indra/newview/llpathfindingnavmesh.cpp b/indra/newview/llpathfindingnavmesh.cpp
index 52a7383da6..c9fbeba2f3 100644
--- a/indra/newview/llpathfindingnavmesh.cpp
+++ b/indra/newview/llpathfindingnavmesh.cpp
@@ -140,12 +140,12 @@ void LLPathfindingNavMesh::handleNavMeshResult(const LLSD &pContent, U32 pNavMes
         if ( pContent.has(NAVMESH_DATA_FIELD) )
         {
             const LLSD::Binary &value = pContent.get(NAVMESH_DATA_FIELD).asBinary();
-            unsigned int binSize = value.size();
+            auto binSize = value.size();
             std::string newStr(reinterpret_cast<const char *>(&value[0]), binSize);
             std::istringstream streamdecomp( newStr );
             size_t decompBinSize = 0;
             bool valid = false;
-            U8* pUncompressedNavMeshContainer = unzip_llsdNavMesh( valid, decompBinSize, streamdecomp, binSize ) ;
+            U8* pUncompressedNavMeshContainer = unzip_llsdNavMesh(valid, decompBinSize, streamdecomp, static_cast<S32>(binSize));
             if ( !valid )
             {
                 LL_WARNS() << "Unable to decompress the navmesh llsd." << LL_ENDL;
diff --git a/indra/newview/llpathfindingobject.h b/indra/newview/llpathfindingobject.h
index 2561e8d66f..17f12efd83 100644
--- a/indra/newview/llpathfindingobject.h
+++ b/indra/newview/llpathfindingobject.h
@@ -56,10 +56,10 @@ public:
     inline const LLUUID&      getUUID() const        {return mUUID;};
     inline const std::string& getName() const        {return mName;};
     inline const std::string& getDescription() const {return mDescription;};
-    inline BOOL               hasOwner() const       {return mOwnerUUID.notNull();};
+    inline bool               hasOwner() const       {return mOwnerUUID.notNull();};
     inline bool               hasOwnerName() const   {return mHasOwnerName;};
     std::string               getOwnerName() const;
-    inline BOOL               isGroupOwned() const   {return mIsGroupOwned;};
+    inline bool               isGroupOwned() const   {return mIsGroupOwned;};
     inline const LLVector3&   getLocation() const    {return mLocation;};
 
     typedef boost::function<void (const LLPathfindingObject *)>         name_callback_t;
@@ -84,7 +84,7 @@ private:
     bool                                     mHasOwnerName;
     LLAvatarName                             mOwnerName;
     LLAvatarNameCache::callback_connection_t mAvatarNameCacheConnection;
-    BOOL                                     mIsGroupOwned;
+    bool                                     mIsGroupOwned;
     LLVector3                                mLocation;
     name_signal_t                            mOwnerNameSignal;
 };
diff --git a/indra/newview/llpathfindingpathtool.cpp b/indra/newview/llpathfindingpathtool.cpp
index a57283d5cd..61791492e7 100644
--- a/indra/newview/llpathfindingpathtool.cpp
+++ b/indra/newview/llpathfindingpathtool.cpp
@@ -35,9 +35,6 @@
 
 #include "llagent.h"
 #include "llpathfindingmanager.h"
-#include "llpathinglib.h"
-#include "llsingleton.h"
-#include "lltool.h"
 #include "llviewercamera.h"
 #include "llviewerregion.h"
 #include "llviewerwindow.h"
@@ -63,9 +60,9 @@ LLPathfindingPathTool::~LLPathfindingPathTool()
 {
 }
 
-BOOL LLPathfindingPathTool::handleMouseDown(S32 pX, S32 pY, MASK pMask)
+bool LLPathfindingPathTool::handleMouseDown(S32 pX, S32 pY, MASK pMask)
 {
-    BOOL returnVal = FALSE;
+    bool returnVal = false;
 
     if (!mIsLeftMouseButtonHeld && !mIsMiddleMouseButtonHeld && !mIsRightMouseButtonHeld)
     {
@@ -76,15 +73,15 @@ BOOL LLPathfindingPathTool::handleMouseDown(S32 pX, S32 pY, MASK pMask)
                 : UI_CURSOR_TOOLPATHFINDING_PATH_END_ADD);
             computeFinalPoints(pX, pY, pMask);
             mIsLeftMouseButtonHeld = true;
-            setMouseCapture(TRUE);
-            returnVal = TRUE;
+            setMouseCapture(true);
+            returnVal = true;
         }
         else if (!isCameraModKeys(pMask))
         {
             gViewerWindow->setCursor(UI_CURSOR_TOOLNO);
             mIsLeftMouseButtonHeld = true;
-            setMouseCapture(TRUE);
-            returnVal = TRUE;
+            setMouseCapture(true);
+            returnVal = true;
         }
     }
     mIsLeftMouseButtonHeld = true;
@@ -92,69 +89,69 @@ BOOL LLPathfindingPathTool::handleMouseDown(S32 pX, S32 pY, MASK pMask)
     return returnVal;
 }
 
-BOOL LLPathfindingPathTool::handleMouseUp(S32 pX, S32 pY, MASK pMask)
+bool LLPathfindingPathTool::handleMouseUp(S32 pX, S32 pY, MASK pMask)
 {
-    BOOL returnVal = FALSE;
+    bool returnVal = false;
 
     if (mIsLeftMouseButtonHeld && !mIsMiddleMouseButtonHeld && !mIsRightMouseButtonHeld)
     {
         computeFinalPoints(pX, pY, pMask);
-        setMouseCapture(FALSE);
-        returnVal = TRUE;
+        setMouseCapture(false);
+        returnVal = true;
     }
     mIsLeftMouseButtonHeld = false;
 
     return returnVal;
 }
 
-BOOL LLPathfindingPathTool::handleMiddleMouseDown(S32 pX, S32 pY, MASK pMask)
+bool LLPathfindingPathTool::handleMiddleMouseDown(S32 pX, S32 pY, MASK pMask)
 {
-    setMouseCapture(TRUE);
+    setMouseCapture(true);
     mIsMiddleMouseButtonHeld = true;
     gViewerWindow->setCursor(UI_CURSOR_TOOLNO);
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLPathfindingPathTool::handleMiddleMouseUp(S32 pX, S32 pY, MASK pMask)
+bool LLPathfindingPathTool::handleMiddleMouseUp(S32 pX, S32 pY, MASK pMask)
 {
     if (!mIsLeftMouseButtonHeld && mIsMiddleMouseButtonHeld && !mIsRightMouseButtonHeld)
     {
-        setMouseCapture(FALSE);
+        setMouseCapture(false);
     }
     mIsMiddleMouseButtonHeld = false;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLPathfindingPathTool::handleRightMouseDown(S32 pX, S32 pY, MASK pMask)
+bool LLPathfindingPathTool::handleRightMouseDown(S32 pX, S32 pY, MASK pMask)
 {
-    setMouseCapture(TRUE);
+    setMouseCapture(true);
     mIsRightMouseButtonHeld = true;
     gViewerWindow->setCursor(UI_CURSOR_TOOLNO);
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLPathfindingPathTool::handleRightMouseUp(S32 pX, S32 pY, MASK pMask)
+bool LLPathfindingPathTool::handleRightMouseUp(S32 pX, S32 pY, MASK pMask)
 {
     if (!mIsLeftMouseButtonHeld && !mIsMiddleMouseButtonHeld && mIsRightMouseButtonHeld)
     {
-        setMouseCapture(FALSE);
+        setMouseCapture(false);
     }
     mIsRightMouseButtonHeld = false;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLPathfindingPathTool::handleDoubleClick(S32 pX, S32 pY, MASK pMask)
+bool LLPathfindingPathTool::handleDoubleClick(S32 pX, S32 pY, MASK pMask)
 {
-    return TRUE;
+    return true;
 }
 
-BOOL LLPathfindingPathTool::handleHover(S32 pX, S32 pY, MASK pMask)
+bool LLPathfindingPathTool::handleHover(S32 pX, S32 pY, MASK pMask)
 {
-    BOOL returnVal = FALSE;
+    bool returnVal = false;
 
     if (!mIsLeftMouseButtonHeld && !mIsMiddleMouseButtonHeld && !mIsRightMouseButtonHeld && !isAnyPathToolModKeys(pMask))
     {
@@ -167,7 +164,7 @@ BOOL LLPathfindingPathTool::handleHover(S32 pX, S32 pY, MASK pMask)
             ? (mIsLeftMouseButtonHeld ? UI_CURSOR_TOOLPATHFINDING_PATH_START_ADD : UI_CURSOR_TOOLPATHFINDING_PATH_START)
             : (mIsLeftMouseButtonHeld ? UI_CURSOR_TOOLPATHFINDING_PATH_END_ADD : UI_CURSOR_TOOLPATHFINDING_PATH_END));
         computeTempPoints(pX, pY, pMask);
-        returnVal = TRUE;
+        returnVal = true;
     }
     else
     {
@@ -178,7 +175,7 @@ BOOL LLPathfindingPathTool::handleHover(S32 pX, S32 pY, MASK pMask)
     return returnVal;
 }
 
-BOOL LLPathfindingPathTool::handleKey(KEY pKey, MASK pMask)
+bool LLPathfindingPathTool::handleKey(KEY pKey, MASK pMask)
 {
     // Eat the escape key or else the camera tool will pick up and reset to default view.  This,
     // in turn, will cause some other methods to get called.  And one of those methods will reset
diff --git a/indra/newview/llpathfindingpathtool.h b/indra/newview/llpathfindingpathtool.h
index 0713616113..189b9d4954 100644
--- a/indra/newview/llpathfindingpathtool.h
+++ b/indra/newview/llpathfindingpathtool.h
@@ -66,17 +66,17 @@ public:
     typedef boost::signals2::signal<void (void)> path_event_signal_t;
     typedef boost::signals2::connection          path_event_slot_t;
 
-    virtual BOOL      handleMouseDown(S32 pX, S32 pY, MASK pMask) override;
-    virtual BOOL      handleMouseUp(S32 pX, S32 pY, MASK pMask) override;
-    virtual BOOL      handleMiddleMouseDown(S32 pX, S32 pY, MASK pMask) override;
-    virtual BOOL      handleMiddleMouseUp(S32 pX, S32 pY, MASK pMask) override;
-    virtual BOOL      handleRightMouseDown(S32 pX, S32 pY, MASK pMask) override;
-    virtual BOOL      handleRightMouseUp(S32 pX, S32 pY, MASK pMask) override;
-    virtual BOOL      handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    virtual bool      handleMouseDown(S32 pX, S32 pY, MASK pMask) override;
+    virtual bool      handleMouseUp(S32 pX, S32 pY, MASK pMask) override;
+    virtual bool      handleMiddleMouseDown(S32 pX, S32 pY, MASK pMask) override;
+    virtual bool      handleMiddleMouseUp(S32 pX, S32 pY, MASK pMask) override;
+    virtual bool      handleRightMouseDown(S32 pX, S32 pY, MASK pMask) override;
+    virtual bool      handleRightMouseUp(S32 pX, S32 pY, MASK pMask) override;
+    virtual bool      handleDoubleClick(S32 x, S32 y, MASK mask) override;
 
-    virtual BOOL      handleHover(S32 pX, S32 pY, MASK pMask) override;
+    virtual bool      handleHover(S32 pX, S32 pY, MASK pMask) override;
 
-    virtual BOOL      handleKey(KEY pKey, MASK pMask) override;
+    virtual bool      handleKey(KEY pKey, MASK pMask) override;
 
     EPathStatus       getPathStatus() const;
 
diff --git a/indra/newview/llpbrterrainfeatures.cpp b/indra/newview/llpbrterrainfeatures.cpp
new file mode 100644
index 0000000000..bb771c6963
--- /dev/null
+++ b/indra/newview/llpbrterrainfeatures.cpp
@@ -0,0 +1,198 @@
+/**
+ * @file   llpbrterrainfeatures.cpp
+ *
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2024, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llpbrterrainfeatures.h"
+
+#include "llappviewer.h"
+#include "llgltfmaterial.h"
+#include "llviewerregion.h"
+#include "llvlcomposition.h"
+
+LLPBRTerrainFeatures gPBRTerrainFeatures;
+
+// static
+void LLPBRTerrainFeatures::queueQuery(LLViewerRegion& region, void(*done_callback)(LLUUID, bool, const LLModifyRegion&))
+{
+    llassert(on_main_thread());
+    llassert(LLCoros::on_main_coro());
+
+    LLUUID region_id = region.getRegionID();
+
+    LLCoros::instance().launch("queryRegionCoro",
+        std::bind(&LLPBRTerrainFeatures::queryRegionCoro,
+            region.getCapability("ModifyRegion"),
+            region_id,
+            done_callback));
+}
+
+// static
+void LLPBRTerrainFeatures::queueModify(LLViewerRegion& region, const LLModifyRegion& composition)
+{
+    llassert(on_main_thread());
+    llassert(LLCoros::on_main_coro());
+
+    LLSD updates = LLSD::emptyMap();
+
+    LLSD override_updates = LLSD::emptyArray();
+    for (S32 i = 0; i < LLTerrainMaterials::ASSET_COUNT; ++i)
+    {
+        const LLGLTFMaterial* material_override = composition.getMaterialOverride(i);
+        LLSD override_update;
+        if (material_override)
+        {
+            LLGLTFMaterial::sDefault.getOverrideLLSD(*material_override, override_update);
+        }
+        else
+        {
+            override_update = LLSD::emptyMap();
+        }
+        override_updates.append(override_update);
+    }
+    updates["overrides"] = override_updates;
+
+    LLCoros::instance().launch("modifyRegionCoro",
+        std::bind(&LLPBRTerrainFeatures::modifyRegionCoro,
+            region.getCapability("ModifyRegion"),
+            updates,
+            nullptr));
+}
+
+// static
+void LLPBRTerrainFeatures::queryRegionCoro(std::string cap_url, LLUUID region_id, void(*done_callback)(LLUUID, bool, const LLModifyRegion&) )
+{
+    LLCore::HttpRequest::policy_t httpPolicy(LLCore::HttpRequest::DEFAULT_POLICY_ID);
+    LLCoreHttpUtil::HttpCoroutineAdapter::ptr_t
+        httpAdapter(new LLCoreHttpUtil::HttpCoroutineAdapter("queryRegionCoro", httpPolicy));
+    LLCore::HttpRequest::ptr_t httpRequest(new LLCore::HttpRequest);
+    LLCore::HttpOptions::ptr_t httpOpts(new LLCore::HttpOptions);
+    LLCore::HttpHeaders::ptr_t httpHeaders;
+
+    httpOpts->setFollowRedirects(true);
+
+    LL_DEBUGS("GLTF") << "Querying features via ModifyRegion endpoint" << LL_ENDL;
+
+    LLSD result = httpAdapter->getAndSuspend(httpRequest, cap_url, httpOpts, httpHeaders);
+
+    LLSD httpResults = result[LLCoreHttpUtil::HttpCoroutineAdapter::HTTP_RESULTS];
+    LLCore::HttpStatus status = LLCoreHttpUtil::HttpCoroutineAdapter::getStatusFromLLSD(httpResults);
+
+    bool success = true;
+    if (!status || !result["success"].asBoolean())
+    {
+        if (result["message"].isUndefined())
+        {
+            LL_WARNS("PBRTerrain") << "Failed to query PBR terrain features." << LL_ENDL;
+        }
+        else
+        {
+            LL_WARNS("PBRTerrain") << "Failed to query PBR terrain features: " << result["message"] << LL_ENDL;
+        }
+        success = false;
+    }
+
+    LLTerrainMaterials* composition = new LLTerrainMaterials();
+
+    if (success)
+    {
+        const LLSD& overrides = result["overrides"];
+        if (!overrides.isArray() || overrides.size() < LLTerrainMaterials::ASSET_COUNT)
+        {
+            LL_WARNS("PBRTerrain") << "Invalid composition format: Missing/invalid overrides" << LL_ENDL;
+            success = false;
+        }
+        else
+        {
+            for (S32 i = 0; i < LLTerrainMaterials::ASSET_COUNT; ++i)
+            {
+                const LLSD& override_llsd = overrides[i];
+                LLPointer<LLGLTFMaterial> material_override = new LLGLTFMaterial();
+                material_override->applyOverrideLLSD(override_llsd);
+                if (*material_override == LLGLTFMaterial::sDefault)
+                {
+                    material_override = nullptr;
+                }
+                composition->setMaterialOverride(i, material_override.get());
+            }
+        }
+    }
+
+    if (done_callback)
+    {
+        LLAppViewer::instance()->postToMainCoro([=]()
+        {
+            done_callback(region_id, success, *composition);
+            delete composition;
+        });
+    }
+    else
+    {
+        delete composition;
+    }
+}
+
+// static
+void LLPBRTerrainFeatures::modifyRegionCoro(std::string cap_url, LLSD updates, void(*done_callback)(bool) )
+{
+    LLCore::HttpRequest::policy_t httpPolicy(LLCore::HttpRequest::DEFAULT_POLICY_ID);
+    LLCoreHttpUtil::HttpCoroutineAdapter::ptr_t
+        httpAdapter(new LLCoreHttpUtil::HttpCoroutineAdapter("modifyRegionCoro", httpPolicy));
+    LLCore::HttpRequest::ptr_t httpRequest(new LLCore::HttpRequest);
+    LLCore::HttpOptions::ptr_t httpOpts(new LLCore::HttpOptions);
+    LLCore::HttpHeaders::ptr_t httpHeaders;
+
+    httpOpts->setFollowRedirects(true);
+
+    LL_DEBUGS("GLTF") << "Applying features via ModifyRegion endpoint: " << updates << LL_ENDL;
+
+    LLSD result = httpAdapter->postAndSuspend(httpRequest, cap_url, updates, httpOpts, httpHeaders);
+
+    LLSD httpResults = result[LLCoreHttpUtil::HttpCoroutineAdapter::HTTP_RESULTS];
+    LLCore::HttpStatus status = LLCoreHttpUtil::HttpCoroutineAdapter::getStatusFromLLSD(httpResults);
+
+    bool success = true;
+    if (!status || !result["success"].asBoolean())
+    {
+        if (result["message"].isUndefined())
+        {
+            LL_WARNS("PBRTerrain") << "Failed to modify PBR terrain features." << LL_ENDL;
+        }
+        else
+        {
+            LL_WARNS("PBRTerrain") << "Failed to modify PBR terrain features: " << result["message"] << LL_ENDL;
+        }
+        success = false;
+    }
+
+    if (done_callback)
+    {
+        LLAppViewer::instance()->postToMainCoro([=]()
+        {
+            done_callback(success);
+        });
+    }
+}
+
diff --git a/indra/newview/llsavedsettingsglue.h b/indra/newview/llpbrterrainfeatures.h
index 61967c53d3..f29d4ebf50 100644
--- a/indra/newview/llsavedsettingsglue.h
+++ b/indra/newview/llpbrterrainfeatures.h
@@ -1,11 +1,9 @@
 /**
- * @file llsavedsettingsglue.h
- * @author James Cook
- * @brief LLSavedSettingsGlue class definition
+ * @file   llpbrterrainfeatures.h
  *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
+ * $LicenseInfo:firstyear=2024&license=viewerlgpl$
  * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
+ * Copyright (C) 2024, Linden Research, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -25,22 +23,26 @@
  * $/LicenseInfo$
  */
 
-#ifndef LL_LLSAVEDSETTINGSGLUE_H
-#define LL_LLSAVEDSETTINGSGLUE_H
 
-class LLUICtrl;
+#pragma once
 
-// Helper to change gSavedSettings from UI widget commit callbacks.
-// Set the widget callback to be one of the setFoo() calls below,
-// and assign the control name as a const char* to the userdata.
-class LLSavedSettingsGlue
+#include <string>
+
+class LLViewerRegion;
+class LLMessageSystem;
+class LLModifyRegion;
+
+// Queries/modifies PBR terrain repeats, possibly other features in the future
+class LLPBRTerrainFeatures
 {
 public:
-    static void setBOOL(LLUICtrl* ctrl, const std::string& name);
-    static void setS32(LLUICtrl* ctrl, const std::string& name);
-    static void setF32(LLUICtrl* ctrl, const std::string& name);
-    static void setU32(LLUICtrl* ctrl, const std::string& name);
-    static void setString(LLUICtrl* ctrl, const std::string& name);
+    static void queueQuery(LLViewerRegion& region, void(*done_callback)(LLUUID, bool, const LLModifyRegion&));
+    static void queueModify(LLViewerRegion& region, const LLModifyRegion& composition);
+
+private:
+    static void queryRegionCoro(std::string cap_url, LLUUID region_id, void(*done_callback)(LLUUID, bool, const LLModifyRegion&) );
+    static void modifyRegionCoro(std::string cap_url, LLSD updates, void(*done_callback)(bool) );
 };
 
-#endif
+extern LLPBRTerrainFeatures gPBRTerrainFeatures;
+
diff --git a/indra/newview/llperfstats.cpp b/indra/newview/llperfstats.cpp
index f8737076b3..64f438976a 100644
--- a/indra/newview/llperfstats.cpp
+++ b/indra/newview/llperfstats.cpp
@@ -131,14 +131,14 @@ namespace LLPerfStats
 
         if(gSavedSettings.getBOOL("AutoTuneLock") && !gSavedSettings.getU32("KeepAutoTuneLock"))
         {
-            gSavedSettings.setBOOL("AutoTuneLock", FALSE);
+            gSavedSettings.setBOOL("AutoTuneLock", false);
         }
 
         LLPerfStats::tunables.userAutoTuneEnabled = LLPerfStats::tunables.userAutoTuneLock;
 
         if (LLPerfStats::tunables.userAutoTuneEnabled && !gSavedSettings.getBOOL("AutoTuneFPS"))
         {
-            gSavedSettings.setBOOL("AutoTuneFPS", TRUE);
+            gSavedSettings.setBOOL("AutoTuneFPS", true);
         }
 
         // Note: The Max ART slider is logarithmic and thus we have an intermediate proxy value
@@ -302,7 +302,7 @@ namespace LLPerfStats
         std::vector<LLVector3d> positions;
         uuid_vec_t avatar_ids;
         LLWorld::getInstance()->getAvatars(&avatar_ids, &positions, our_pos, distance);
-        return positions.size();
+        return static_cast<int>(positions.size());
     }
 
     const U32 NUM_PERIODS = 50;
@@ -378,7 +378,7 @@ namespace LLPerfStats
             auto count = countNearbyAvatars(std::min(LLPipeline::RenderFarClip, tunables.userImpostorDistance));
             if( count != tunables.nonImpostors )
             {
-                tunables.updateNonImposters( (count < LLVOAvatar::NON_IMPOSTORS_MAX_SLIDER)?count : 0 );
+                tunables.updateNonImposters(((U32)count < LLVOAvatar::NON_IMPOSTORS_MAX_SLIDER) ? count : 0);
                 LL_DEBUGS("AutoTune") << "There are " << count << "avatars within " << std::min(LLPipeline::RenderFarClip, tunables.userImpostorDistance) << "m of the camera" << LL_ENDL;
             }
         }
@@ -411,7 +411,7 @@ namespace LLPerfStats
                 return;
             }
 
-            if(belowTargetFPS == false)
+            if (!belowTargetFPS)
             {
                 // this is the first frame under. hold fire to add a little hysteresis
                 belowTargetFPS = true;
@@ -488,7 +488,7 @@ namespace LLPerfStats
                 new_render_limit_ns = std::max((U64)new_render_limit_ns, (U64)LLPerfStats::ART_MINIMUM_NANOS);
 
                 // assign the new value
-                if(renderAvatarMaxART_ns != new_render_limit_ns)
+                if (renderAvatarMaxART_ns != new_render_limit_ns)
                 {
                     renderAvatarMaxART_ns = new_render_limit_ns;
                     tunables.updateSettingsFromRenderCostLimit();
@@ -497,10 +497,10 @@ namespace LLPerfStats
             }
             // LL_DEBUGS() << "AUTO_TUNE: Target frame time:"<< LLPerfStats::raw_to_us(target_frame_time_raw) << "usecs (non_avatar is " << LLPerfStats::raw_to_us(non_avatar_time_raw) << "usecs) Max cost limited=" << renderAvatarMaxART_ns << LL_ENDL;
         }
-        else if(( LLPerfStats::raw_to_ns(target_frame_time_raw) > (LLPerfStats::raw_to_ns(tot_frame_time_raw) + renderAvatarMaxART_ns) ) ||
+        else if ((LLPerfStats::raw_to_ns(target_frame_time_raw) > (LLPerfStats::raw_to_ns(tot_frame_time_raw) + renderAvatarMaxART_ns)) ||
                  (tunables.vsyncEnabled && (target_fps == LLPerfStats::vsync_max_fps) && (target_frame_time_raw > getMeanTotalFrameTime())))
         {
-            if(belowTargetFPS == true)
+            if (belowTargetFPS)
             {
                 // we reached target, force a pause
                 lastGlobalPrefChange = gFrameCount;
@@ -508,15 +508,17 @@ namespace LLPerfStats
             }
 
             // once we're over the FPS target we slow down further
-            if((gFrameCount - lastGlobalPrefChange) > settingsChangeFrequency*3)
+            if ((gFrameCount - lastGlobalPrefChange) > settingsChangeFrequency * 3)
             {
-                if(!tunables.userAutoTuneLock)
+                if (!tunables.userAutoTuneLock)
                 {
                     // we've reached the target and stayed long enough to consider stable.
                     // turn off if we are not locked.
                     tunables.updateUserAutoTuneEnabled(false);
                 }
-                if(renderAvatarMaxART_ns != 0 && LLPerfStats::tunedAvatars > 0 && (tunables.userFPSTuningStrategy != TUNE_SCENE_ONLY) )
+                if (renderAvatarMaxART_ns > 0 &&
+                    LLPerfStats::tunedAvatars > 0 &&
+                    tunables.userFPSTuningStrategy != TUNE_SCENE_ONLY)
                 {
                     // if we have more time to spare let's shift up little in the hope we'll restore an avatar.
                     U64 up_step = LLPerfStats::tunedAvatars > 2 ? LLPerfStats::ART_MIN_ADJUST_UP_NANOS : LLPerfStats::ART_MIN_ADJUST_UP_NANOS * 2;
@@ -524,15 +526,15 @@ namespace LLPerfStats
                     tunables.updateSettingsFromRenderCostLimit();
                     return;
                 }
-                if(tunables.userFPSTuningStrategy != TUNE_AVATARS_ONLY)
+                if (tunables.userFPSTuningStrategy != TUNE_AVATARS_ONLY)
                 {
-                    if( LLPipeline::RenderFarClip < tunables.userTargetDrawDistance )
+                    if (LLPipeline::RenderFarClip < tunables.userTargetDrawDistance)
                     {
                         LLPerfStats::tunables.updateFarClip( std::min(LLPipeline::RenderFarClip + DD_STEP, tunables.userTargetDrawDistance) );
                         LLPerfStats::lastGlobalPrefChange = gFrameCount;
                         return;
                     }
-                    if( (tot_frame_time_raw * 1.5) < target_frame_time_raw )
+                    if ((tot_frame_time_raw * 1.5) < target_frame_time_raw)
                     {
                         // if everything else is "max" and we have >50% headroom let's knock the water quality up a notch at a time.
 # if 0 // RenderReflectionDetail went away
diff --git a/indra/newview/llphysicsmotion.cpp b/indra/newview/llphysicsmotion.cpp
index 9c6a4a7f10..b6bcd6dd7d 100644
--- a/indra/newview/llphysicsmotion.cpp
+++ b/indra/newview/llphysicsmotion.cpp
@@ -120,11 +120,11 @@ public:
                 }
         }
 
-        BOOL initialize();
+        bool initialize();
 
         ~LLPhysicsMotion() {}
 
-        BOOL onUpdate(F32 time);
+        bool onUpdate(F32 time);
 
         LLPointer<LLJointState> getJointState()
         {
@@ -217,20 +217,20 @@ default_controller_map_t initDefaultController()
 
 default_controller_map_t LLPhysicsMotion::sDefaultController = initDefaultController();
 
-BOOL LLPhysicsMotion::initialize()
+bool LLPhysicsMotion::initialize()
 {
         if (!mJointState->setJoint(mCharacter->getJoint(mJointName.c_str())))
-                return FALSE;
+                return false;
         mJointState->setUsage(LLJointState::ROT);
 
         mParamDriver = (LLViewerVisualParam*)mCharacter->getVisualParam(mParamDriverName.c_str());
         if (mParamDriver == NULL)
         {
                 LL_INFOS() << "Failure reading in  [ " << mParamDriverName << " ]" << LL_ENDL;
-                return FALSE;
+                return false;
         }
 
-        return TRUE;
+        return true;
 }
 
 LLPhysicsMotionController::LLPhysicsMotionController(const LLUUID &id) :
@@ -250,9 +250,9 @@ LLPhysicsMotionController::~LLPhysicsMotionController()
         }
 }
 
-BOOL LLPhysicsMotionController::onActivate()
+bool LLPhysicsMotionController::onActivate()
 {
-        return TRUE;
+        return true;
 }
 
 void LLPhysicsMotionController::onDeactivate()
@@ -282,7 +282,7 @@ LLMotion::LLMotionInitStatus LLPhysicsMotionController::onInitialize(LLCharacter
                                                                                                           controller);
                 if (!motion->initialize())
                 {
-                        llassert_always(FALSE);
+                        llassert_always(false);
                         return STATUS_FAILURE;
                 }
                 addMotion(motion);
@@ -305,7 +305,7 @@ LLMotion::LLMotionInitStatus LLPhysicsMotionController::onInitialize(LLCharacter
                                                                                                           controller);
                 if (!motion->initialize())
                 {
-                        llassert_always(FALSE);
+                        llassert_always(false);
                         return STATUS_FAILURE;
                 }
                 addMotion(motion);
@@ -328,7 +328,7 @@ LLMotion::LLMotionInitStatus LLPhysicsMotionController::onInitialize(LLCharacter
                                                                                                           controller);
                 if (!motion->initialize())
                 {
-                        llassert_always(FALSE);
+                        llassert_always(false);
                         return STATUS_FAILURE;
                 }
                 addMotion(motion);
@@ -350,7 +350,7 @@ LLMotion::LLMotionInitStatus LLPhysicsMotionController::onInitialize(LLCharacter
                                                                                                           controller);
                 if (!motion->initialize())
                 {
-                        llassert_always(FALSE);
+                        llassert_always(false);
                         return STATUS_FAILURE;
                 }
                 addMotion(motion);
@@ -373,7 +373,7 @@ LLMotion::LLMotionInitStatus LLPhysicsMotionController::onInitialize(LLCharacter
                                                                                                           controller);
                 if (!motion->initialize())
                 {
-                        llassert_always(FALSE);
+                        llassert_always(false);
                         return STATUS_FAILURE;
                 }
                 addMotion(motion);
@@ -396,7 +396,7 @@ LLMotion::LLMotionInitStatus LLPhysicsMotionController::onInitialize(LLCharacter
                                                                                                           controller);
                 if (!motion->initialize())
                 {
-                        llassert_always(FALSE);
+                        llassert_always(false);
                         return STATUS_FAILURE;
                 }
                 addMotion(motion);
@@ -451,16 +451,16 @@ F32 LLPhysicsMotion::calculateAcceleration_local(const F32 velocity_local, const
         return smoothed_acceleration_local;
 }
 
-BOOL LLPhysicsMotionController::onUpdate(F32 time, U8* joint_mask)
+bool LLPhysicsMotionController::onUpdate(F32 time, U8* joint_mask)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
         // Skip if disabled globally.
         if (!gSavedSettings.getBOOL("AvatarPhysics"))
         {
-                return TRUE;
+                return true;
         }
 
-        BOOL update_visuals = FALSE;
+        bool update_visuals = false;
         for (motion_vec_t::iterator iter = mMotions.begin();
              iter != mMotions.end();
              ++iter)
@@ -472,21 +472,21 @@ BOOL LLPhysicsMotionController::onUpdate(F32 time, U8* joint_mask)
         if (update_visuals)
                 mCharacter->updateVisualParams();
 
-        return TRUE;
+        return true;
 }
 
-// Return TRUE if character has to update visual params.
-BOOL LLPhysicsMotion::onUpdate(F32 time)
+// Return true if character has to update visual params.
+bool LLPhysicsMotion::onUpdate(F32 time)
 {
         // static FILE *mFileWrite = fopen("c:\\temp\\avatar_data.txt","w");
 
         if (!mParamDriver)
-                return FALSE;
+                return false;
 
         if (!mLastTime || mLastTime >= time)
         {
                 mLastTime = time;
-                return FALSE;
+                return false;
         }
 
         ////////////////////////////////////////////////////////////////////////////////
@@ -499,7 +499,7 @@ BOOL LLPhysicsMotion::onUpdate(F32 time)
         if (time_delta > 1.0)
         {
                 mLastTime = time;
-                return FALSE;
+                return false;
         }
 
         // Higher LOD is better.  This controls the granularity
@@ -507,7 +507,7 @@ BOOL LLPhysicsMotion::onUpdate(F32 time)
         const F32 lod_factor = LLVOAvatar::sPhysicsLODFactor;
         if (lod_factor == 0)
         {
-                return TRUE;
+                return true;
         }
 
         LLJoint *joint = mJointState->getJoint();
@@ -520,7 +520,7 @@ BOOL LLPhysicsMotion::onUpdate(F32 time)
         const F32 behavior_drag = getParamValue(DRAG);
         F32 behavior_maxeffect = getParamValue(MAX_EFFECT);
 
-        const BOOL physics_test = FALSE; // Enable this to simulate bouncing on all parts.
+        const bool physics_test = false; // Enable this to simulate bouncing on all parts.
 
         if (physics_test)
                 behavior_maxeffect = 1.0f;
@@ -548,7 +548,7 @@ BOOL LLPhysicsMotion::onUpdate(F32 time)
     // End velocity and acceleration
     ////////////////////////////////////////////////////////////////////////////////
 
-    BOOL update_visuals = FALSE;
+    bool update_visuals = false;
 
     // Break up the physics into a bunch of iterations so that differing framerates will show
     // roughly the same behavior.
@@ -700,14 +700,14 @@ BOOL LLPhysicsMotion::onUpdate(F32 time)
         const F32 area_for_this_setting = area_for_max_settings + (area_for_min_settings-area_for_max_settings)*(1.0-lod_factor);
             const F32 pixel_area = sqrtf(mCharacter->getPixelArea());
 
-        const BOOL is_self = (dynamic_cast<LLVOAvatarSelf *>(mCharacter) != NULL);
+        const bool is_self = (dynamic_cast<LLVOAvatarSelf *>(mCharacter) != NULL);
         if ((pixel_area > area_for_this_setting) || is_self)
         {
             const F32 position_diff_local = llabs(mPositionLastUpdate_local-position_new_local_clamped);
             const F32 min_delta = (1.0001f-lod_factor)*0.4f;
             if (llabs(position_diff_local) > min_delta)
             {
-                update_visuals = TRUE;
+                update_visuals = true;
                 mPositionLastUpdate_local = position_new_local;
             }
         }
diff --git a/indra/newview/llphysicsmotion.h b/indra/newview/llphysicsmotion.h
index e7c31dff52..9f1278d22e 100644
--- a/indra/newview/llphysicsmotion.h
+++ b/indra/newview/llphysicsmotion.h
@@ -66,7 +66,7 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() { return TRUE; }
+    virtual bool getLoop() { return true; }
 
     // motions must report their total duration
     virtual F32 getDuration() { return 0.0; }
@@ -91,14 +91,14 @@ public:
     virtual LLMotionInitStatus onInitialize(LLCharacter *character);
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate();
+    virtual bool onActivate();
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask);
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask);
 
     // called when a motion is deactivated
     virtual void onDeactivate();
diff --git a/indra/newview/llphysicsshapebuilderutil.h b/indra/newview/llphysicsshapebuilderutil.h
index 25b44bbbb5..01c173523b 100644
--- a/indra/newview/llphysicsshapebuilderutil.h
+++ b/indra/newview/llphysicsshapebuilderutil.h
@@ -73,7 +73,8 @@ public:
         {
             return LLVolumeParams::operator<(params);
         }
-        return (params.mForceConvex == false) && (mForceConvex == true);
+
+        return !params.mForceConvex && mForceConvex;
     }
 
     bool shouldForceConvex() const { return mForceConvex; }
diff --git a/indra/newview/llplacesfolderview.cpp b/indra/newview/llplacesfolderview.cpp
index 3661d98c2a..770f927723 100644
--- a/indra/newview/llplacesfolderview.cpp
+++ b/indra/newview/llplacesfolderview.cpp
@@ -39,10 +39,10 @@ LLPlacesFolderView::LLPlacesFolderView(const LLFolderView::Params& p)
     // we do not need auto select functionality in places landmarks, so override default behavior.
     // this disables applying of the LLSelectFirstFilteredItem in LLFolderView::doIdle.
     // Fixed issues: EXT-1631, EXT-4994.
-    mAutoSelectOverride = TRUE;
+    mAutoSelectOverride = true;
 }
 
-BOOL LLPlacesFolderView::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLPlacesFolderView::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     // let children to change selection first
     childrenHandleRightMouseDown(x, y, mask);
diff --git a/indra/newview/llplacesfolderview.h b/indra/newview/llplacesfolderview.h
index 0a3d9ef21b..4b1cbcd992 100644
--- a/indra/newview/llplacesfolderview.h
+++ b/indra/newview/llplacesfolderview.h
@@ -49,7 +49,7 @@ public:
      * Contains workaround for EXT-2786: sets current selected list for landmark
      * panel using @c mParentLandmarksPanel which is set in @c LLLandmarksPanel::initLandmarksPanel
      */
-    /*virtual*/ BOOL handleRightMouseDown( S32 x, S32 y, MASK mask );
+    /*virtual*/ bool handleRightMouseDown( S32 x, S32 y, MASK mask );
 
     /*virtual*/ void updateMenu();
 
diff --git a/indra/newview/llplacesinventorypanel.cpp b/indra/newview/llplacesinventorypanel.cpp
index 23e490e124..03be8a4b2c 100644
--- a/indra/newview/llplacesinventorypanel.cpp
+++ b/indra/newview/llplacesinventorypanel.cpp
@@ -48,7 +48,7 @@ LLPlacesInventoryPanel::LLPlacesInventoryPanel(const Params& p) :
 {
     mInvFVBridgeBuilder = &PLACES_INVENTORY_BUILDER;
     mSavedFolderState = new LLSaveFolderState();
-    mSavedFolderState->setApply(FALSE);
+    mSavedFolderState->setApply(false);
 }
 
 
@@ -90,14 +90,14 @@ LLFolderView * LLPlacesInventoryPanel::createFolderRoot(LLUUID root_id )
 // save current folder open state
 void LLPlacesInventoryPanel::saveFolderState()
 {
-    mSavedFolderState->setApply(FALSE);
+    mSavedFolderState->setApply(false);
     mFolderRoot.get()->applyFunctorRecursively(*mSavedFolderState);
 }
 
 // re-open folders which state was saved
 void LLPlacesInventoryPanel::restoreFolderState()
 {
-    mSavedFolderState->setApply(TRUE);
+    mSavedFolderState->setApply(true);
     mFolderRoot.get()->applyFunctorRecursively(*mSavedFolderState);
     LLOpenFoldersWithSelection opener;
     mFolderRoot.get()->applyFunctorRecursively(opener);
@@ -121,12 +121,12 @@ S32 LLPlacesInventoryPanel::notify(const LLSD& info)
     return 0;
 }
 
-BOOL LLPlacesInventoryPanel::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop, EDragAndDropType cargo_type, void *cargo_data,
+bool LLPlacesInventoryPanel::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop, EDragAndDropType cargo_type, void *cargo_data,
                                                       EAcceptance *accept, std::string &tooltip_msg)
 {
     if (mAcceptsDragAndDrop)
     {
         return LLInventoryPanel::handleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data, accept, tooltip_msg);
     }
-    return FALSE;
+    return false;
 }
diff --git a/indra/newview/llplacesinventorypanel.h b/indra/newview/llplacesinventorypanel.h
index 755db690dd..9b33369f5f 100644
--- a/indra/newview/llplacesinventorypanel.h
+++ b/indra/newview/llplacesinventorypanel.h
@@ -53,7 +53,7 @@ public:
 
     virtual S32 notify(const LLSD& info) override;
 
-    BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop, EDragAndDropType cargo_type, void *cargo_data,
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop, EDragAndDropType cargo_type, void *cargo_data,
                             EAcceptance *accept, std::string &tooltip_msg) override;
 
 private:
diff --git a/indra/newview/llpopupview.cpp b/indra/newview/llpopupview.cpp
index 0b13fc37b9..cc55b3c8db 100644
--- a/indra/newview/llpopupview.cpp
+++ b/indra/newview/llpopupview.cpp
@@ -94,12 +94,12 @@ void LLPopupView::draw()
     LLPanel::draw();
 }
 
-BOOL LLPopupView::handleMouseEvent(boost::function<BOOL(LLView*, S32, S32)> func,
+bool LLPopupView::handleMouseEvent(boost::function<bool(LLView*, S32, S32)> func,
                                    boost::function<bool(LLView*)> predicate,
                                    S32 x, S32 y,
                                    bool close_popups)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     // make a copy of list of popups, in case list is modified during mouse event handling
     popup_list_t popups(mPopups);
@@ -120,7 +120,7 @@ BOOL LLPopupView::handleMouseEvent(boost::function<BOOL(LLView*, S32, S32)> func
         {
             if (func(popup, popup_x, popup_y))
             {
-                handled = TRUE;
+                handled = true;
                 break;
             }
         }
@@ -136,9 +136,9 @@ BOOL LLPopupView::handleMouseEvent(boost::function<BOOL(LLView*, S32, S32)> func
 }
 
 
-BOOL LLPopupView::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLPopupView::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleMouseDown, _1, _2, _3, mask), view_visible_and_enabled, x, y, true);
+    bool handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleMouseDown, _1, _2, _3, mask), view_visible_and_enabled, x, y, true);
     if (!handled)
     {
         handled = LLPanel::handleMouseDown(x, y, mask);
@@ -146,9 +146,9 @@ BOOL LLPopupView::handleMouseDown(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLPopupView::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLPopupView::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleMouseUp, _1, _2, _3, mask), view_visible_and_enabled, x, y, false);
+    bool handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleMouseUp, _1, _2, _3, mask), view_visible_and_enabled, x, y, false);
     if (!handled)
     {
         handled = LLPanel::handleMouseUp(x, y, mask);
@@ -156,9 +156,9 @@ BOOL LLPopupView::handleMouseUp(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLPopupView::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
+bool LLPopupView::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleMiddleMouseDown, _1, _2, _3, mask), view_visible_and_enabled, x, y, true);
+    bool handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleMiddleMouseDown, _1, _2, _3, mask), view_visible_and_enabled, x, y, true);
     if (!handled)
     {
         handled = LLPanel::handleMiddleMouseDown(x, y, mask);
@@ -166,9 +166,9 @@ BOOL LLPopupView::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLPopupView::handleMiddleMouseUp(S32 x, S32 y, MASK mask)
+bool LLPopupView::handleMiddleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleMiddleMouseUp, _1, _2, _3, mask), view_visible_and_enabled, x, y, false);
+    bool handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleMiddleMouseUp, _1, _2, _3, mask), view_visible_and_enabled, x, y, false);
     if (!handled)
     {
         handled = LLPanel::handleMiddleMouseUp(x, y, mask);
@@ -176,9 +176,9 @@ BOOL LLPopupView::handleMiddleMouseUp(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLPopupView::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLPopupView::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleRightMouseDown, _1, _2, _3, mask), view_visible_and_enabled, x, y, true);
+    bool handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleRightMouseDown, _1, _2, _3, mask), view_visible_and_enabled, x, y, true);
     if (!handled)
     {
         handled = LLPanel::handleRightMouseDown(x, y, mask);
@@ -186,9 +186,9 @@ BOOL LLPopupView::handleRightMouseDown(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLPopupView::handleRightMouseUp(S32 x, S32 y, MASK mask)
+bool LLPopupView::handleRightMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleRightMouseUp, _1, _2, _3, mask), view_visible_and_enabled, x, y, false);
+    bool handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleRightMouseUp, _1, _2, _3, mask), view_visible_and_enabled, x, y, false);
     if (!handled)
     {
         handled = LLPanel::handleRightMouseUp(x, y, mask);
@@ -196,9 +196,9 @@ BOOL LLPopupView::handleRightMouseUp(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLPopupView::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLPopupView::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleDoubleClick, _1, _2, _3, mask), view_visible_and_enabled, x, y, false);
+    bool handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleDoubleClick, _1, _2, _3, mask), view_visible_and_enabled, x, y, false);
     if (!handled)
     {
         handled = LLPanel::handleDoubleClick(x, y, mask);
@@ -206,9 +206,9 @@ BOOL LLPopupView::handleDoubleClick(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLPopupView::handleHover(S32 x, S32 y, MASK mask)
+bool LLPopupView::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleHover, _1, _2, _3, mask), view_visible_and_enabled, x, y, false);
+    bool handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleHover, _1, _2, _3, mask), view_visible_and_enabled, x, y, false);
     if (!handled)
     {
         handled = LLPanel::handleHover(x, y, mask);
@@ -216,9 +216,9 @@ BOOL LLPopupView::handleHover(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLPopupView::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLPopupView::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
-    BOOL handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleScrollWheel, _1, _2, _3, clicks), view_visible_and_enabled, x, y, false);
+    bool handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleScrollWheel, _1, _2, _3, clicks), view_visible_and_enabled, x, y, false);
     if (!handled)
     {
         handled = LLPanel::handleScrollWheel(x, y, clicks);
@@ -226,9 +226,9 @@ BOOL LLPopupView::handleScrollWheel(S32 x, S32 y, S32 clicks)
     return handled;
 }
 
-BOOL LLPopupView::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLPopupView::handleToolTip(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleToolTip, _1, _2, _3, mask), view_visible, x, y, false);
+    bool handled = handleMouseEvent(boost::bind(&LLMouseHandler::handleToolTip, _1, _2, _3, mask), view_visible, x, y, false);
     if (!handled)
     {
         handled = LLPanel::handleToolTip(x, y, mask);
@@ -264,8 +264,8 @@ void LLPopupView::clearPopups()
         mPopups.erase(popup_it);
         if (popup)
         {
-            popup->onTopLost();
-        }
+        popup->onTopLost();
     }
 }
+}
 
diff --git a/indra/newview/llpopupview.h b/indra/newview/llpopupview.h
index d42df280bb..4a88866185 100644
--- a/indra/newview/llpopupview.h
+++ b/indra/newview/llpopupview.h
@@ -36,16 +36,16 @@ public:
     ~LLPopupView();
 
     /*virtual*/ void draw();
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMiddleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMiddleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleRightMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleScrollWheel(S32 x, S32 y, S32 clicks);
-    /*virtual*/ BOOL handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMiddleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleMiddleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleRightMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleScrollWheel(S32 x, S32 y, S32 clicks);
+    /*virtual*/ bool handleToolTip(S32 x, S32 y, MASK mask);
 
     void addPopup(LLView* popup);
     void removePopup(LLView* popup);
@@ -55,7 +55,7 @@ public:
     popup_list_t getCurrentPopups() { return mPopups; }
 
 private:
-    BOOL handleMouseEvent(boost::function<BOOL(LLView*, S32, S32)>, boost::function<bool(LLView*)>, S32 x, S32 y, bool close_popups);
+    bool handleMouseEvent(boost::function<bool(LLView*, S32, S32)>, boost::function<bool(LLView*)>, S32 x, S32 y, bool close_popups);
     popup_list_t mPopups;
 };
 #endif //LL_LLROOTVIEW_H
diff --git a/indra/newview/llpresetsmanager.cpp b/indra/newview/llpresetsmanager.cpp
index a6722b1c02..afd58af056 100644
--- a/indra/newview/llpresetsmanager.cpp
+++ b/indra/newview/llpresetsmanager.cpp
@@ -424,7 +424,7 @@ bool LLPresetsManager::setPresetNamesInComboBox(const std::string& subdirectory,
     bool sts = true;
 
     combo->clearRows();
-    combo->setEnabled(TRUE);
+    combo->setEnabled(true);
 
     std::list<std::string> preset_names;
     loadPresetNamesFromDir(subdirectory, preset_names, default_option);
diff --git a/indra/newview/llpreview.cpp b/indra/newview/llpreview.cpp
index df1b2be955..3f3e1766b4 100644
--- a/indra/newview/llpreview.cpp
+++ b/indra/newview/llpreview.cpp
@@ -58,26 +58,26 @@ LLPreview::LLPreview(const LLSD& key)
     mItemUUID(key.has("itemid") ? key.get("itemid").asUUID() : key.asUUID()),
     mObjectUUID(),          // set later by setObjectID()
     mCopyToInvBtn( NULL ),
-    mForceClose(FALSE),
-    mUserResized(FALSE),
-    mCloseAfterSave(FALSE),
+    mForceClose(false),
+    mUserResized(false),
+    mCloseAfterSave(false),
     mAssetStatus(PREVIEW_ASSET_UNLOADED),
-    mDirty(TRUE),
-    mSaveDialogShown(FALSE)
+    mDirty(true),
+    mSaveDialogShown(false)
 {
     mAuxItem = new LLInventoryItem;
     // don't necessarily steal focus on creation -- sometimes these guys pop up without user action
-    setAutoFocus(FALSE);
+    setAutoFocus(false);
 
     gInventory.addObserver(this);
 
     refreshFromItem();
 }
 
-BOOL LLPreview::postBuild()
+bool LLPreview::postBuild()
 {
     refreshFromItem();
-    return TRUE;
+    return true;
 }
 
 LLPreview::~LLPreview()
@@ -142,7 +142,7 @@ void LLPreview::onCommit()
         if (!item->isFinished())
         {
             // We are attempting to save an item that was never loaded
-            LL_WARNS() << "LLPreview::onCommit() called with mIsComplete == FALSE"
+            LL_WARNS() << "LLPreview::onCommit() called with mIsComplete == false"
                     << " Type: " << item->getType()
                     << " ID: " << item->getUUID()
                     << LL_ENDL;
@@ -172,7 +172,7 @@ void LLPreview::onCommit()
         }
         else if(item->getPermissions().getOwner() == gAgent.getID())
         {
-            new_item->updateServer(FALSE);
+            new_item->updateServer(false);
             gInventory.updateItem(new_item);
             gInventory.notifyObservers();
 
@@ -186,7 +186,7 @@ void LLPreview::onCommit()
                     if( obj )
                     {
                         LLSelectMgr::getInstance()->deselectAll();
-                        LLSelectMgr::getInstance()->addAsIndividual( obj, SELECT_ALL_TES, FALSE );
+                        LLSelectMgr::getInstance()->addAsIndividual( obj, SELECT_ALL_TES, false );
                         LLSelectMgr::getInstance()->selectionSetObjectDescription( getChild<LLUICtrl>("desc")->getValue().asString() );
 
                         LLSelectMgr::getInstance()->deselectAll();
@@ -199,7 +199,7 @@ void LLPreview::onCommit()
 
 void LLPreview::changed(U32 mask)
 {
-    mDirty = TRUE;
+    mDirty = true;
 }
 
 void LLPreview::setNotecardInfo(const LLUUID& notecard_inv_id,
@@ -214,7 +214,7 @@ void LLPreview::draw()
     LLFloater::draw();
     if (mDirty)
     {
-        mDirty = FALSE;
+        mDirty = false;
         refreshFromItem();
     }
 }
@@ -239,7 +239,7 @@ void LLPreview::refreshFromItem()
 }
 
 // static
-BOOL LLPreview::canModify(const LLUUID taskUUID, const LLInventoryItem* item)
+bool LLPreview::canModify(const LLUUID taskUUID, const LLInventoryItem* item)
 {
     const LLViewerObject* object = nullptr;
     if (taskUUID.notNull())
@@ -251,12 +251,12 @@ BOOL LLPreview::canModify(const LLUUID taskUUID, const LLInventoryItem* item)
 }
 
 // static
-BOOL LLPreview::canModify(const LLViewerObject* object, const LLInventoryItem* item)
+bool LLPreview::canModify(const LLViewerObject* object, const LLInventoryItem* item)
 {
     if (object && !object->permModify())
     {
         // No permission to edit in-world inventory
-        return FALSE;
+        return false;
     }
 
     return item && gAgent.allowOperation(PERM_MODIFY, item->getPermissions(), GP_OBJECT_MANIPULATE);
@@ -277,7 +277,7 @@ void LLPreview::onRadio(LLUICtrl*, void* userdata)
 }
 
 // static
-void LLPreview::hide(const LLUUID& item_uuid, BOOL no_saving /* = FALSE */ )
+void LLPreview::hide(const LLUUID& item_uuid, bool no_saving /* = false */ )
 {
     LLFloater* floater = LLFloaterReg::findInstance("preview", LLSD(item_uuid));
     if (!floater) floater = LLFloaterReg::findInstance("preview_avatar", LLSD(item_uuid));
@@ -287,7 +287,7 @@ void LLPreview::hide(const LLUUID& item_uuid, BOOL no_saving /* = FALSE */ )
     {
         if ( no_saving )
         {
-            preview->mForceClose = TRUE;
+            preview->mForceClose = true;
         }
         preview->closeFloater();
     }
@@ -302,11 +302,11 @@ void LLPreview::dirty(const LLUUID& item_uuid)
     LLPreview* preview = dynamic_cast<LLPreview*>(floater);
     if(preview)
     {
-        preview->mDirty = TRUE;
+        preview->mDirty = true;
     }
 }
 
-BOOL LLPreview::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLPreview::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if(mClientRect.pointInRect(x, y))
     {
@@ -318,22 +318,22 @@ BOOL LLPreview::handleMouseDown(S32 x, S32 y, MASK mask)
         S32 screen_y;
         localPointToScreen(x, y, &screen_x, &screen_y );
         LLToolDragAndDrop::getInstance()->setDragStart(screen_x, screen_y);
-        return TRUE;
+        return true;
     }
     return LLFloater::handleMouseDown(x, y, mask);
 }
 
-BOOL LLPreview::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLPreview::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if(hasMouseCapture())
     {
         gFocusMgr.setMouseCapture(NULL);
-        return TRUE;
+        return true;
     }
     return LLFloater::handleMouseUp(x, y, mask);
 }
 
-BOOL LLPreview::handleHover(S32 x, S32 y, MASK mask)
+bool LLPreview::handleHover(S32 x, S32 y, MASK mask)
 {
     if(hasMouseCapture())
     {
@@ -442,7 +442,7 @@ void LLPreview::onDiscardBtn(void* data)
     const LLInventoryItem* item = self->getItem();
     if (!item) return;
 
-    self->mForceClose = TRUE;
+    self->mForceClose = true;
     self->closeFloater();
 
     // Move the item to the trash
@@ -460,7 +460,7 @@ void LLPreview::onDiscardBtn(void* data)
         new_item->setParent(trash_id);
         // no need to restamp it though it's a move into trash because
         // it's a brand new item already.
-        new_item->updateParentOnServer(FALSE);
+        new_item->updateParentOnServer(false);
         gInventory.updateItem(new_item);
         gInventory.notifyObservers();
     }
@@ -495,7 +495,7 @@ LLMultiPreview::LLMultiPreview()
     }
     setTitle(LLTrans::getString("MultiPreviewTitle"));
     buildTabContainer();
-    setCanResize(TRUE);
+    setCanResize(true);
 }
 
 void LLMultiPreview::onOpen(const LLSD& key)
diff --git a/indra/newview/llpreview.h b/indra/newview/llpreview.h
index 5b77cc6a25..b8c5477301 100644
--- a/indra/newview/llpreview.h
+++ b/indra/newview/llpreview.h
@@ -68,7 +68,7 @@ public:
     LLPreview(const LLSD& key );
     virtual ~LLPreview();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     virtual void setObjectID(const LLUUID& object_id);
     void setItem( LLInventoryItem* item );
@@ -76,30 +76,27 @@ public:
     void setAssetId(const LLUUID& asset_id);
     const LLInventoryItem* getItem() const; // searches if not constructed with it
 
-    static void hide(const LLUUID& item_uuid, BOOL no_saving = FALSE );
+    static void hide(const LLUUID& item_uuid, bool no_saving = false );
     static void dirty(const LLUUID& item_uuid);
 
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL handleHover(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool handleHover(S32 x, S32 y, MASK mask);
     virtual void onOpen(const LLSD& key);
 
     virtual void setAuxItem( const LLInventoryItem* item );
 
     static void         onBtnCopyToInv(void* userdata);
 
-    void                addKeepDiscardButtons();
     static void         onKeepBtn(void* data);
     static void         onDiscardBtn(void* data);
     /*virtual*/ void    handleReshape(const LLRect& new_rect, bool by_user = false);
 
-    void userResized() { mUserResized = TRUE; };
+    void userResized() { mUserResized = true; };
 
     virtual void loadAsset() { mAssetStatus = PREVIEW_ASSET_LOADED; }
     virtual EAssetStatus getAssetStatus() { return mAssetStatus;}
 
-    static LLPreview* getFirstPreviewForSource(const LLUUID& source_id);
-
     // Why is this at the LLPreview level?  JC
     void setNotecardInfo(const LLUUID& notecard_inv_id, const LLUUID& object_id);
 
@@ -109,21 +106,19 @@ public:
 
     // We can't modify Item or description in preview if either in-world Object
     // or Item  itself is unmodifiable
-    static BOOL canModify(const LLUUID taskUUID, const LLInventoryItem* item);
-    static BOOL canModify(const LLViewerObject* object, const LLInventoryItem* item);
+    static bool canModify(const LLUUID taskUUID, const LLInventoryItem* item);
+    static bool canModify(const LLViewerObject* object, const LLInventoryItem* item);
 
 protected:
     virtual void onCommit();
 
-    void addDescriptionUI();
-
     static void onText(LLUICtrl*, void* userdata);
     static void onRadio(LLUICtrl*, void* userdata);
 
     // for LLInventoryObserver
     virtual void changed(U32 mask);
-    BOOL mDirty;
-    BOOL mSaveDialogShown;
+    bool mDirty;
+    bool mSaveDialogShown;
 
 protected:
     LLUUID mItemUUID;
@@ -140,13 +135,13 @@ protected:
     LLButton* mCopyToInvBtn;
 
     // Close without saving changes
-    BOOL mForceClose;
+    bool mForceClose;
 
-    BOOL mUserResized;
+    bool mUserResized;
 
     // When closing springs a "Want to save?" dialog, we want
     // to keep the preview open until the save completes.
-    BOOL mCloseAfterSave;
+    bool mCloseAfterSave;
 
     EAssetStatus mAssetStatus;
 
diff --git a/indra/newview/llpreviewanim.cpp b/indra/newview/llpreviewanim.cpp
index dfc41b6700..7d11c09738 100644
--- a/indra/newview/llpreviewanim.cpp
+++ b/indra/newview/llpreviewanim.cpp
@@ -50,7 +50,7 @@ LLPreviewAnim::LLPreviewAnim(const LLSD& key)
 }
 
 // virtual
-BOOL LLPreviewAnim::postBuild()
+bool LLPreviewAnim::postBuild()
 {
     childSetCommitCallback("desc", LLPreview::onText, this);
     getChild<LLLineEditor>("desc")->setPrevalidate(&LLTextValidate::validateASCIIPrintableNoPipe);
@@ -58,9 +58,9 @@ BOOL LLPreviewAnim::postBuild()
     pAdvancedStatsTextBox = getChild<LLTextBox>("AdvancedStats");
 
     // Assume that advanced stats start visible (for XUI preview tool's purposes)
-    pAdvancedStatsTextBox->setVisible(FALSE);
+    pAdvancedStatsTextBox->setVisible(false);
     LLRect rect = getRect();
-    reshape(rect.getWidth(), rect.getHeight() - pAdvancedStatsTextBox->getRect().getHeight() - ADVANCED_VPAD, FALSE);
+    reshape(rect.getWidth(), rect.getHeight() - pAdvancedStatsTextBox->getRect().getHeight() - ADVANCED_VPAD, false);
 
     return LLPreview::postBuild();
 }
@@ -180,10 +180,10 @@ void LLPreviewAnim::cleanup()
 {
     this->mItemID = LLUUID::null;
     this->mDidStart = false;
-    getChild<LLUICtrl>("Inworld")->setValue(FALSE);
-    getChild<LLUICtrl>("Locally")->setValue(FALSE);
-    getChild<LLUICtrl>("Inworld")->setEnabled(TRUE);
-    getChild<LLUICtrl>("Locally")->setEnabled(TRUE);
+    getChild<LLUICtrl>("Inworld")->setValue(false);
+    getChild<LLUICtrl>("Locally")->setValue(false);
+    getChild<LLUICtrl>("Inworld")->setEnabled(true);
+    getChild<LLUICtrl>("Locally")->setEnabled(true);
 }
 
 // virtual
@@ -200,19 +200,19 @@ void LLPreviewAnim::onClose(bool app_quitting)
 
 void LLPreviewAnim::showAdvanced()
 {
-    BOOL was_visible =  pAdvancedStatsTextBox->getVisible();
+    bool was_visible =  pAdvancedStatsTextBox->getVisible();
 
     if (was_visible)
     {
-        pAdvancedStatsTextBox->setVisible(FALSE);
+        pAdvancedStatsTextBox->setVisible(false);
         LLRect rect = getRect();
-        reshape(rect.getWidth(), rect.getHeight() - pAdvancedStatsTextBox->getRect().getHeight() - ADVANCED_VPAD, FALSE);
+        reshape(rect.getWidth(), rect.getHeight() - pAdvancedStatsTextBox->getRect().getHeight() - ADVANCED_VPAD, false);
     }
     else
     {
-        pAdvancedStatsTextBox->setVisible(TRUE);
+        pAdvancedStatsTextBox->setVisible(true);
         LLRect rect = getRect();
-        reshape(rect.getWidth(), rect.getHeight() + pAdvancedStatsTextBox->getRect().getHeight() + ADVANCED_VPAD, FALSE);
+        reshape(rect.getWidth(), rect.getHeight() + pAdvancedStatsTextBox->getRect().getHeight() + ADVANCED_VPAD, false);
 
         LLMotion *motion = NULL;
         const LLInventoryItem* item = getItem();
diff --git a/indra/newview/llpreviewanim.h b/indra/newview/llpreviewanim.h
index ccaca6ff96..34fa0cf5cb 100644
--- a/indra/newview/llpreviewanim.h
+++ b/indra/newview/llpreviewanim.h
@@ -38,7 +38,7 @@ class LLPreviewAnim : public LLPreview
 public:
 
     LLPreviewAnim(const LLSD& key);
-    BOOL postBuild() override;
+    bool postBuild() override;
     void onClose(bool app_quitting) override;
     void draw() override;
     void refreshFromItem() override;
diff --git a/indra/newview/llpreviewgesture.cpp b/indra/newview/llpreviewgesture.cpp
index 1d9d69dcfe..7cbbb89313 100644
--- a/indra/newview/llpreviewgesture.cpp
+++ b/indra/newview/llpreviewgesture.cpp
@@ -137,12 +137,12 @@ void LLPreviewGesture::draw()
 }
 
 // virtual
-BOOL LLPreviewGesture::handleKeyHere(KEY key, MASK mask)
+bool LLPreviewGesture::handleKeyHere(KEY key, MASK mask)
 {
     if(('S' == key) && (MASK_CONTROL == (mask & MASK_CONTROL)))
     {
         saveIfNeeded();
-        return TRUE;
+        return true;
     }
 
     return LLPreview::handleKeyHere(key, mask);
@@ -150,13 +150,13 @@ BOOL LLPreviewGesture::handleKeyHere(KEY key, MASK mask)
 
 
 // virtual
-BOOL LLPreviewGesture::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+bool LLPreviewGesture::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                          EDragAndDropType cargo_type,
                                          void* cargo_data,
                                          EAcceptance* accept,
                                          std::string& tooltip_msg)
 {
-    BOOL handled = TRUE;
+    bool handled = true;
     switch(cargo_type)
     {
     case DAD_ANIMATION:
@@ -199,7 +199,7 @@ BOOL LLPreviewGesture::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
                         sound->mSoundName = item->getName();
                     }
                     updateLabel(line);
-                    mDirty = TRUE;
+                    mDirty = true;
                     refresh();
                 }
                 *accept = ACCEPT_YES_COPY_MULTI;
@@ -225,23 +225,23 @@ BOOL LLPreviewGesture::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
 
 
 // virtual
-BOOL LLPreviewGesture::canClose()
+bool LLPreviewGesture::canClose()
 {
 
     if(!mDirty || mForceClose)
     {
-        return TRUE;
+        return true;
     }
     else
     {
         if(!mSaveDialogShown)
         {
-            mSaveDialogShown = TRUE;
+            mSaveDialogShown = true;
             // Bring up view-modal dialog: Save changes? Yes, No, Cancel
             LLNotificationsUtil::add("SaveChanges", LLSD(), LLSD(),
                     boost::bind(&LLPreviewGesture::handleSaveChangesDialog, this, _1, _2) );
         }
-        return FALSE;
+        return false;
     }
 }
 
@@ -268,19 +268,19 @@ void LLPreviewGesture::onVisibilityChanged ( const LLSD& new_visibility )
 
 bool LLPreviewGesture::handleSaveChangesDialog(const LLSD& notification, const LLSD& response)
 {
-    mSaveDialogShown = FALSE;
+    mSaveDialogShown = false;
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
     switch(option)
     {
     case 0:  // "Yes"
         LLGestureMgr::instance().stopGesture(mPreviewGesture);
-        mCloseAfterSave = TRUE;
+        mCloseAfterSave = true;
         onClickSave(this);
         break;
 
     case 1:  // "No"
         LLGestureMgr::instance().stopGesture(mPreviewGesture);
-        mDirty = FALSE; // Force the dirty flag because user has clicked NO on confirm save dialog...
+        mDirty = false; // Force the dirty flag because user has clicked NO on confirm save dialog...
         closeFloater();
         break;
 
@@ -313,7 +313,7 @@ LLPreviewGesture::LLPreviewGesture(const LLSD& key)
     mSaveBtn(NULL),
     mPreviewBtn(NULL),
     mPreviewGesture(NULL),
-    mDirty(FALSE)
+    mDirty(false)
 {
     NONE_LABEL =  LLTrans::getString("---");
     SHIFT_LABEL = LLTrans::getString("KBShift");
@@ -336,7 +336,7 @@ LLPreviewGesture::~LLPreviewGesture()
 }
 
 
-BOOL LLPreviewGesture::postBuild()
+bool LLPreviewGesture::postBuild()
 {
     setVisibleCallback(boost::bind(&LLPreviewGesture::onVisibilityChanged, this, _2));
 
@@ -353,20 +353,20 @@ BOOL LLPreviewGesture::postBuild()
     edit = getChild<LLLineEditor>("trigger_editor");
     edit->setKeystrokeCallback(onKeystrokeCommit, this);
     edit->setCommitCallback(onCommitSetDirty, this);
-    edit->setCommitOnFocusLost(TRUE);
-    edit->setIgnoreTab(TRUE);
+    edit->setCommitOnFocusLost(true);
+    edit->setIgnoreTab(true);
     mTriggerEditor = edit;
 
     text = getChild<LLTextBox>("replace_text");
-    text->setEnabled(FALSE);
+    text->setEnabled(false);
     mReplaceText = text;
 
     edit = getChild<LLLineEditor>("replace_editor");
-    edit->setEnabled(FALSE);
+    edit->setEnabled(false);
     edit->setKeystrokeCallback(onKeystrokeCommit, this);
     edit->setCommitCallback(onCommitSetDirty, this);
-    edit->setCommitOnFocusLost(TRUE);
-    edit->setIgnoreTab(TRUE);
+    edit->setCommitOnFocusLost(true);
+    edit->setIgnoreTab(true);
     mReplaceEditor = edit;
 
     combo = getChild<LLComboBox>( "modifier_combo");
@@ -384,22 +384,22 @@ BOOL LLPreviewGesture::postBuild()
 
     btn = getChild<LLButton>( "add_btn");
     btn->setClickedCallback(onClickAdd, this);
-    btn->setEnabled(FALSE);
+    btn->setEnabled(false);
     mAddBtn = btn;
 
     btn = getChild<LLButton>( "up_btn");
     btn->setClickedCallback(onClickUp, this);
-    btn->setEnabled(FALSE);
+    btn->setEnabled(false);
     mUpBtn = btn;
 
     btn = getChild<LLButton>( "down_btn");
     btn->setClickedCallback(onClickDown, this);
-    btn->setEnabled(FALSE);
+    btn->setEnabled(false);
     mDownBtn = btn;
 
     btn = getChild<LLButton>( "delete_btn");
     btn->setClickedCallback(onClickDelete, this);
-    btn->setEnabled(FALSE);
+    btn->setEnabled(false);
     mDeleteBtn = btn;
 
     list = getChild<LLScrollListCtrl>("step_list");
@@ -410,52 +410,52 @@ BOOL LLPreviewGesture::postBuild()
     mOptionsText = getChild<LLTextBox>("options_text");
 
     combo = getChild<LLComboBox>( "animation_list");
-    combo->setVisible(FALSE);
+    combo->setVisible(false);
     combo->setCommitCallback(onCommitAnimation, this);
     mAnimationCombo = combo;
 
     LLRadioGroup* group;
     group = getChild<LLRadioGroup>("animation_trigger_type");
-    group->setVisible(FALSE);
+    group->setVisible(false);
     group->setCommitCallback(onCommitAnimationTrigger, this);
     mAnimationRadio = group;
 
     combo = getChild<LLComboBox>( "sound_list");
-    combo->setVisible(FALSE);
+    combo->setVisible(false);
     combo->setCommitCallback(onCommitSound, this);
     mSoundCombo = combo;
 
     edit = getChild<LLLineEditor>("chat_editor");
-    edit->setVisible(FALSE);
+    edit->setVisible(false);
     edit->setCommitCallback(onCommitChat, this);
     //edit->setKeystrokeCallback(onKeystrokeCommit, this);
-    edit->setCommitOnFocusLost(TRUE);
-    edit->setIgnoreTab(TRUE);
+    edit->setCommitOnFocusLost(true);
+    edit->setIgnoreTab(true);
     mChatEditor = edit;
 
     check = getChild<LLCheckBoxCtrl>( "wait_key_release_check");
-    check->setVisible(FALSE);
+    check->setVisible(false);
     check->setCommitCallback(onCommitWait, this);
     mWaitKeyReleaseCheck = check;
 
     check = getChild<LLCheckBoxCtrl>( "wait_anim_check");
-    check->setVisible(FALSE);
+    check->setVisible(false);
     check->setCommitCallback(onCommitWait, this);
     mWaitAnimCheck = check;
 
     check = getChild<LLCheckBoxCtrl>( "wait_time_check");
-    check->setVisible(FALSE);
+    check->setVisible(false);
     check->setCommitCallback(onCommitWait, this);
     mWaitTimeCheck = check;
 
     edit = getChild<LLLineEditor>("wait_time_editor");
-    edit->setEnabled(FALSE);
-    edit->setVisible(FALSE);
+    edit->setEnabled(false);
+    edit->setVisible(false);
     edit->setPrevalidate(LLTextValidate::validateFloat);
 //  edit->setKeystrokeCallback(onKeystrokeCommit, this);
-    edit->setCommitOnFocusLost(TRUE);
+    edit->setCommitOnFocusLost(true);
     edit->setCommitCallback(onCommitWaitTime, this);
-    edit->setIgnoreTab(TRUE);
+    edit->setIgnoreTab(true);
     mWaitTimeEditor = edit;
 
     // Buttons at the bottom
@@ -549,11 +549,9 @@ void LLPreviewGesture::addAnimations()
 
     // Copy into something we can sort
     std::vector<LLInventoryItem*> animations;
-
-    S32 count = items.size();
-    for(i = 0; i < count; ++i)
+    for (auto& item : items)
     {
-        animations.push_back( items.at(i) );
+        animations.emplace_back(item);
     }
 
     // Do the sort
@@ -594,12 +592,9 @@ void LLPreviewGesture::addSounds()
 
     // Copy sounds into something we can sort
     std::vector<LLInventoryItem*> sounds;
-
-    S32 i;
-    S32 count = items.size();
-    for(i = 0; i < count; ++i)
+    for (auto& item : items)
     {
-        sounds.push_back( items.at(i) );
+        sounds.emplace_back(item);
     }
 
     // Do the sort
@@ -621,44 +616,44 @@ void LLPreviewGesture::refresh()
     LLPreview::refresh();
     // If previewing or item is incomplete, all controls are disabled
     LLViewerInventoryItem* item = (LLViewerInventoryItem*)getItem();
-    bool is_complete = (item && item->isFinished()) ? true : false;
+    bool is_complete = item && item->isFinished();
     if (mPreviewGesture || !is_complete)
     {
 
-        getChildView("desc")->setEnabled(FALSE);
-        //mDescEditor->setEnabled(FALSE);
-        mTriggerEditor->setEnabled(FALSE);
-        mReplaceText->setEnabled(FALSE);
-        mReplaceEditor->setEnabled(FALSE);
-        mModifierCombo->setEnabled(FALSE);
-        mKeyCombo->setEnabled(FALSE);
-        mLibraryList->setEnabled(FALSE);
-        mAddBtn->setEnabled(FALSE);
-        mUpBtn->setEnabled(FALSE);
-        mDownBtn->setEnabled(FALSE);
-        mDeleteBtn->setEnabled(FALSE);
-        mStepList->setEnabled(FALSE);
-        mOptionsText->setEnabled(FALSE);
-        mAnimationCombo->setEnabled(FALSE);
-        mAnimationRadio->setEnabled(FALSE);
-        mSoundCombo->setEnabled(FALSE);
-        mChatEditor->setEnabled(FALSE);
-        mWaitKeyReleaseCheck->setEnabled(FALSE);
-        mWaitAnimCheck->setEnabled(FALSE);
-        mWaitTimeCheck->setEnabled(FALSE);
-        mWaitTimeEditor->setEnabled(FALSE);
-        mActiveCheck->setEnabled(FALSE);
-        mSaveBtn->setEnabled(FALSE);
+        getChildView("desc")->setEnabled(false);
+        //mDescEditor->setEnabled(false);
+        mTriggerEditor->setEnabled(false);
+        mReplaceText->setEnabled(false);
+        mReplaceEditor->setEnabled(false);
+        mModifierCombo->setEnabled(false);
+        mKeyCombo->setEnabled(false);
+        mLibraryList->setEnabled(false);
+        mAddBtn->setEnabled(false);
+        mUpBtn->setEnabled(false);
+        mDownBtn->setEnabled(false);
+        mDeleteBtn->setEnabled(false);
+        mStepList->setEnabled(false);
+        mOptionsText->setEnabled(false);
+        mAnimationCombo->setEnabled(false);
+        mAnimationRadio->setEnabled(false);
+        mSoundCombo->setEnabled(false);
+        mChatEditor->setEnabled(false);
+        mWaitKeyReleaseCheck->setEnabled(false);
+        mWaitAnimCheck->setEnabled(false);
+        mWaitTimeCheck->setEnabled(false);
+        mWaitTimeEditor->setEnabled(false);
+        mActiveCheck->setEnabled(false);
+        mSaveBtn->setEnabled(false);
 
         // Make sure preview button is enabled, so we can stop it
-        mPreviewBtn->setEnabled(TRUE);
+        mPreviewBtn->setEnabled(true);
         return;
     }
 
-    BOOL modifiable = item->getPermissions().allowModifyBy(gAgent.getID());
+    bool modifiable = item->getPermissions().allowModifyBy(gAgent.getID());
 
     getChildView("desc")->setEnabled(modifiable);
-    mTriggerEditor->setEnabled(TRUE);
+    mTriggerEditor->setEnabled(true);
     mLibraryList->setEnabled(modifiable);
     mStepList->setEnabled(modifiable);
     mOptionsText->setEnabled(modifiable);
@@ -670,27 +665,27 @@ void LLPreviewGesture::refresh()
     mWaitAnimCheck->setEnabled(modifiable);
     mWaitTimeCheck->setEnabled(modifiable);
     mWaitTimeEditor->setEnabled(modifiable);
-    mActiveCheck->setEnabled(TRUE);
+    mActiveCheck->setEnabled(true);
 
     const std::string& trigger = mTriggerEditor->getText();
-    BOOL have_trigger = !trigger.empty();
+    bool have_trigger = !trigger.empty();
 
     const std::string& replace = mReplaceEditor->getText();
-    BOOL have_replace = !replace.empty();
+    bool have_replace = !replace.empty();
 
     LLScrollListItem* library_item = mLibraryList->getFirstSelected();
-    BOOL have_library = (library_item != NULL);
+    bool have_library = (library_item != NULL);
 
     LLScrollListItem* step_item = mStepList->getFirstSelected();
     S32 step_index = mStepList->getFirstSelectedIndex();
     S32 step_count = mStepList->getItemCount();
-    BOOL have_step = (step_item != NULL);
+    bool have_step = (step_item != NULL);
 
     mReplaceText->setEnabled(have_trigger || have_replace);
     mReplaceEditor->setEnabled(have_trigger || have_replace);
 
-    mModifierCombo->setEnabled(TRUE);
-    mKeyCombo->setEnabled(TRUE);
+    mModifierCombo->setEnabled(true);
+    mKeyCombo->setEnabled(true);
 
     mAddBtn->setEnabled(modifiable && have_library);
     mUpBtn->setEnabled(modifiable && have_step && step_index > 0);
@@ -698,14 +693,14 @@ void LLPreviewGesture::refresh()
     mDeleteBtn->setEnabled(modifiable && have_step);
 
     // Assume all not visible
-    mAnimationCombo->setVisible(FALSE);
-    mAnimationRadio->setVisible(FALSE);
-    mSoundCombo->setVisible(FALSE);
-    mChatEditor->setVisible(FALSE);
-    mWaitKeyReleaseCheck->setVisible(FALSE);
-    mWaitAnimCheck->setVisible(FALSE);
-    mWaitTimeCheck->setVisible(FALSE);
-    mWaitTimeEditor->setVisible(FALSE);
+    mAnimationCombo->setVisible(false);
+    mAnimationRadio->setVisible(false);
+    mSoundCombo->setVisible(false);
+    mChatEditor->setVisible(false);
+    mWaitKeyReleaseCheck->setVisible(false);
+    mWaitAnimCheck->setVisible(false);
+    mWaitTimeCheck->setVisible(false);
+    mWaitTimeEditor->setVisible(false);
 
     std::string optionstext;
 
@@ -721,8 +716,8 @@ void LLPreviewGesture::refresh()
             {
                 LLGestureStepAnimation* anim_step = (LLGestureStepAnimation*)step;
                 optionstext = getString("step_anim");
-                mAnimationCombo->setVisible(TRUE);
-                mAnimationRadio->setVisible(TRUE);
+                mAnimationCombo->setVisible(true);
+                mAnimationRadio->setVisible(true);
                 mAnimationRadio->setSelectedIndex((anim_step->mFlags & ANIM_FLAG_STOP) ? 1 : 0);
                 mAnimationCombo->setCurrentByID(anim_step->mAnimAssetID);
                 break;
@@ -731,7 +726,7 @@ void LLPreviewGesture::refresh()
             {
                 LLGestureStepSound* sound_step = (LLGestureStepSound*)step;
                 optionstext = getString("step_sound");
-                mSoundCombo->setVisible(TRUE);
+                mSoundCombo->setVisible(true);
                 mSoundCombo->setCurrentByID(sound_step->mSoundAssetID);
                 break;
             }
@@ -739,7 +734,7 @@ void LLPreviewGesture::refresh()
             {
                 LLGestureStepChat* chat_step = (LLGestureStepChat*)step;
                 optionstext = getString("step_chat");
-                mChatEditor->setVisible(TRUE);
+                mChatEditor->setVisible(true);
                 mChatEditor->setText(chat_step->mChatText);
                 break;
             }
@@ -747,13 +742,13 @@ void LLPreviewGesture::refresh()
             {
                 LLGestureStepWait* wait_step = (LLGestureStepWait*)step;
                 optionstext = getString("step_wait");
-                mWaitKeyReleaseCheck->setVisible(TRUE);
+                mWaitKeyReleaseCheck->setVisible(true);
                 mWaitKeyReleaseCheck->set(wait_step->mFlags & WAIT_FLAG_KEY_RELEASE);
-                mWaitAnimCheck->setVisible(TRUE);
+                mWaitAnimCheck->setVisible(true);
                 mWaitAnimCheck->set(wait_step->mFlags & WAIT_FLAG_ALL_ANIM);
-                mWaitTimeCheck->setVisible(TRUE);
+                mWaitTimeCheck->setVisible(true);
                 mWaitTimeCheck->set(wait_step->mFlags & WAIT_FLAG_TIME);
-                mWaitTimeEditor->setVisible(TRUE);
+                mWaitTimeEditor->setVisible(true);
                 std::string buffer = llformat("%.1f", (double)wait_step->mWaitSeconds);
                 mWaitTimeEditor->setText(buffer);
                 break;
@@ -765,7 +760,7 @@ void LLPreviewGesture::refresh()
 
     mOptionsText->setText(optionstext);
 
-    BOOL active = LLGestureMgr::instance().isGestureActive(mItemUUID);
+    bool active = LLGestureMgr::instance().isGestureActive(mItemUUID);
     mActiveCheck->set(active);
 
     // Can only preview if there are steps
@@ -801,7 +796,7 @@ void LLPreviewGesture::initDefaultGesture()
     mStepList->selectFirstItem();
 
     // this is *new* content, so we are dirty
-    mDirty = TRUE;
+    mDirty = true;
 }
 
 
@@ -834,7 +829,7 @@ void LLPreviewGesture::loadAsset()
     // window if the download gets stalled.
     LLUUID* item_idp = new LLUUID(mItemUUID);
 
-    const BOOL high_priority = TRUE;
+    const bool high_priority = true;
     gAssetStorage->getAssetData(asset_id,
                                 LLAssetType::AT_GESTURE,
                                 onLoadComplete,
@@ -866,7 +861,7 @@ void LLPreviewGesture::onLoadComplete(const LLUUID& asset_uuid,
             LLMultiGesture* gesture = new LLMultiGesture();
 
             LLDataPackerAsciiBuffer dp(&buffer[0], size+1);
-            BOOL ok = gesture->deserialize(dp);
+            bool ok = gesture->deserialize(dp);
 
             if (ok)
             {
@@ -875,7 +870,7 @@ void LLPreviewGesture::onLoadComplete(const LLUUID& asset_uuid,
 
                 self->mStepList->selectFirstItem();
 
-                self->mDirty = FALSE;
+                self->mDirty = false;
                 self->refresh();
                 self->refreshFromItem(); // to update description and title
             }
@@ -951,8 +946,8 @@ void LLPreviewGesture::loadUIFromGesture(LLMultiGesture* gesture)
     mKeyCombo->setEnabledByValue(LLKeyboard::stringFromKey(KEY_F10), gesture->mMask != MASK_CONTROL);
 
     // Make UI steps for each gesture step
-    S32 i;
-    S32 count = gesture->mSteps.size();
+    size_t i;
+    size_t count = gesture->mSteps.size();
     for (i = 0; i < count; ++i)
     {
         LLGestureStep* step = gesture->mSteps[i];
@@ -1153,7 +1148,7 @@ void LLPreviewGesture::saveIfNeeded()
 
             LLLineEditor* descEditor = getChild<LLLineEditor>("desc");
             LLSaveInfo* info = new LLSaveInfo(mItemUUID, mObjectUUID, descEditor->getText(), tid);
-            gAssetStorage->storeAssetData(tid, LLAssetType::AT_GESTURE, onSaveComplete, info, FALSE);
+            gAssetStorage->storeAssetData(tid, LLAssetType::AT_GESTURE, onSaveComplete, info, false);
         }
 
     }
@@ -1206,7 +1201,7 @@ void LLPreviewGesture::onSaveComplete(const LLUUID& asset_uuid, void* user_data,
                 new_item->setDescription(info->mDesc);
                 new_item->setTransactionID(info->mTransactionID);
                 new_item->setAssetUUID(asset_uuid);
-                new_item->updateServer(FALSE);
+                new_item->updateServer(false);
                 gInventory.updateItem(new_item);
                 gInventory.notifyObservers();
             }
@@ -1352,7 +1347,7 @@ void LLPreviewGesture::onCommitKeyorModifier()
 
     mKeyCombo->setEnabledByValue(LLKeyboard::stringFromKey(KEY_F10), mModifierCombo->getSimple() != CTRL_LABEL);
     mModifierCombo->setEnabledByValue(CTRL_LABEL, mKeyCombo->getSimple() != LLKeyboard::stringFromKey(KEY_F10));
-    mDirty = TRUE;
+    mDirty = true;
     refresh();
 }
 
@@ -1371,7 +1366,7 @@ void LLPreviewGesture::updateLabel(LLScrollListItem* item)
 void LLPreviewGesture::onCommitSetDirty(LLUICtrl* ctrl, void* data)
 {
     LLPreviewGesture* self = (LLPreviewGesture*)data;
-    self->mDirty = TRUE;
+    self->mDirty = true;
     self->refresh();
 }
 
@@ -1430,7 +1425,7 @@ void LLPreviewGesture::onCommitAnimation(LLUICtrl* ctrl, void* data)
             // Update the UI label in the list
             updateLabel(step_item);
 
-            self->mDirty = TRUE;
+            self->mDirty = true;
             self->refresh();
         }
     }
@@ -1461,7 +1456,7 @@ void LLPreviewGesture::onCommitAnimationTrigger(LLUICtrl* ctrl, void *data)
             // Update the UI label in the list
             updateLabel(step_item);
 
-            self->mDirty = TRUE;
+            self->mDirty = true;
             self->refresh();
         }
     }
@@ -1487,7 +1482,7 @@ void LLPreviewGesture::onCommitSound(LLUICtrl* ctrl, void* data)
             // Update the UI label in the list
             updateLabel(step_item);
 
-            self->mDirty = TRUE;
+            self->mDirty = true;
             self->refresh();
         }
     }
@@ -1511,7 +1506,7 @@ void LLPreviewGesture::onCommitChat(LLUICtrl* ctrl, void* data)
     // Update the UI label in the list
     updateLabel(step_item);
 
-    self->mDirty = TRUE;
+    self->mDirty = true;
     self->refresh();
 }
 
@@ -1548,7 +1543,7 @@ void LLPreviewGesture::onCommitWait(LLUICtrl* ctrl, void* data)
     // Update the UI label in the list
     updateLabel(step_item);
 
-    self->mDirty = TRUE;
+    self->mDirty = true;
     self->refresh();
 }
 
@@ -1563,7 +1558,7 @@ void LLPreviewGesture::onCommitWaitTime(LLUICtrl* ctrl, void* data)
     LLGestureStep* step = (LLGestureStep*)step_item->getUserdata();
     if (step->getType() != STEP_WAIT) return;
 
-    self->mWaitTimeCheck->set(TRUE);
+    self->mWaitTimeCheck->set(true);
     onCommitWait(ctrl, data);
 }
 
@@ -1596,7 +1591,7 @@ void LLPreviewGesture::onClickAdd(void* data)
     }
 
     self->addStep( (EStepType)library_item_index );
-    self->mDirty = TRUE;
+    self->mDirty = true;
     self->refresh();
 }
 
@@ -1637,7 +1632,7 @@ LLScrollListItem* LLPreviewGesture::addStep( const EStepType step_type )
     mLibraryList->deselectAllItems();
     mStepList->deselectAllItems();
 
-    step_item->setSelected(TRUE);
+    step_item->setSelected(true);
 
     return step_item;
 }
@@ -1697,7 +1692,7 @@ void LLPreviewGesture::onClickUp(void* data)
     if (selected_index > 0)
     {
         self->mStepList->swapWithPrevious(selected_index);
-        self->mDirty = TRUE;
+        self->mDirty = true;
         self->refresh();
     }
 }
@@ -1714,7 +1709,7 @@ void LLPreviewGesture::onClickDown(void* data)
     if (selected_index < count-1)
     {
         self->mStepList->swapWithNext(selected_index);
-        self->mDirty = TRUE;
+        self->mDirty = true;
         self->refresh();
     }
 }
@@ -1734,7 +1729,7 @@ void LLPreviewGesture::onClickDelete(void* data)
 
         self->mStepList->deleteSingleItem(selected_index);
 
-        self->mDirty = TRUE;
+        self->mDirty = true;
         self->refresh();
     }
 }
diff --git a/indra/newview/llpreviewgesture.h b/indra/newview/llpreviewgesture.h
index 1f8017656f..75f22df76f 100644
--- a/indra/newview/llpreviewgesture.h
+++ b/indra/newview/llpreviewgesture.h
@@ -52,18 +52,18 @@ public:
 
     // LLView
     /*virtual*/ void draw();
-    /*virtual*/ BOOL handleKeyHere(KEY key, MASK mask);
-    /*virtual*/ BOOL handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    /*virtual*/ bool handleKeyHere(KEY key, MASK mask);
+    /*virtual*/ bool handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
                                      EDragAndDropType cargo_type,
                                      void* cargo_data,
                                      EAcceptance* accept,
                                      std::string& tooltip_msg);
 
     // LLPanel
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     // LLFloater
-    /*virtual*/ BOOL canClose();
+    /*virtual*/ bool canClose();
     /*virtual*/ void onClose(bool app_quitting);
     /*virtual*/ void onUpdateSucceeded();
     /*virtual*/ void refresh();
@@ -164,7 +164,7 @@ private:
     LLButton*           mPreviewBtn;
 
     LLMultiGesture*     mPreviewGesture;
-    BOOL mDirty;
+    bool mDirty;
 };
 
 #endif // LL_LLPREVIEWGESTURE_H
diff --git a/indra/newview/llpreviewnotecard.cpp b/indra/newview/llpreviewnotecard.cpp
index aa04540536..620b7c8b2d 100644
--- a/indra/newview/llpreviewnotecard.cpp
+++ b/indra/newview/llpreviewnotecard.cpp
@@ -82,14 +82,14 @@ LLPreviewNotecard::~LLPreviewNotecard()
     delete mLiveFile;
 }
 
-BOOL LLPreviewNotecard::postBuild()
+bool LLPreviewNotecard::postBuild()
 {
     mEditor = getChild<LLViewerTextEditor>("Notecard Editor");
     mEditor->setNotecardInfo(mItemUUID, mObjectID, getKey());
     mEditor->makePristine();
 
     childSetAction("Save", onClickSave, this);
-    getChildView("lock")->setVisible( FALSE);
+    getChildView("lock")->setVisible( false);
 
     childSetAction("Delete", onClickDelete, this);
     getChildView("Delete")->setEnabled(false);
@@ -102,7 +102,7 @@ BOOL LLPreviewNotecard::postBuild()
     if (item)
     {
         getChild<LLUICtrl>("desc")->setValue(item->getDescription());
-        BOOL source_library = mObjectUUID.isNull() && gInventory.isObjectDescendentOf(item->getUUID(), gInventory.getLibraryRootFolderID());
+        bool source_library = mObjectUUID.isNull() && gInventory.isObjectDescendentOf(item->getUUID(), gInventory.getLibraryRootFolderID());
         getChildView("Delete")->setEnabled(!source_library);
     }
     getChild<LLLineEditor>("desc")->setPrevalidate(&LLTextValidate::validateASCIIPrintableNoPipe);
@@ -116,7 +116,7 @@ bool LLPreviewNotecard::saveItem()
     return saveIfNeeded(item);
 }
 
-void LLPreviewNotecard::setEnabled( BOOL enabled )
+void LLPreviewNotecard::setEnabled(bool enabled)
 {
 
     LLViewerTextEditor* editor = getChild<LLViewerTextEditor>("Notecard Editor");
@@ -131,7 +131,7 @@ void LLPreviewNotecard::setEnabled( BOOL enabled )
 void LLPreviewNotecard::draw()
 {
     LLViewerTextEditor* editor = getChild<LLViewerTextEditor>("Notecard Editor");
-    BOOL changed = !editor->isPristine();
+    bool changed = !editor->isPristine();
 
     getChildView("Save")->setEnabled(changed && getEnabled());
 
@@ -139,35 +139,35 @@ void LLPreviewNotecard::draw()
 }
 
 // virtual
-BOOL LLPreviewNotecard::handleKeyHere(KEY key, MASK mask)
+bool LLPreviewNotecard::handleKeyHere(KEY key, MASK mask)
 {
     if(('S' == key) && (MASK_CONTROL == (mask & MASK_CONTROL)))
     {
         saveIfNeeded();
-        return TRUE;
+        return true;
     }
 
     return LLPreview::handleKeyHere(key, mask);
 }
 
 // virtual
-BOOL LLPreviewNotecard::canClose()
+bool LLPreviewNotecard::canClose()
 {
     LLViewerTextEditor* editor = getChild<LLViewerTextEditor>("Notecard Editor");
 
     if(mForceClose || editor->isPristine())
     {
-        return TRUE;
+        return true;
     }
     else
     {
         if(!mSaveDialogShown)
         {
-            mSaveDialogShown = TRUE;
+            mSaveDialogShown = true;
             // Bring up view-modal dialog: Save changes? Yes, No, Cancel
             LLNotificationsUtil::add("SaveChanges", LLSD(), LLSD(), boost::bind(&LLPreviewNotecard::handleSaveChangesDialog,this, _1, _2));
         }
-        return FALSE;
+        return false;
     }
 }
 
@@ -239,10 +239,10 @@ void LLPreviewNotecard::loadAsset()
     if(item)
     {
         LLPermissions perm(item->getPermissions());
-        BOOL is_owner = gAgent.allowOperation(PERM_OWNER, perm, GP_OBJECT_MANIPULATE);
-        BOOL allow_copy = gAgent.allowOperation(PERM_COPY, perm, GP_OBJECT_MANIPULATE);
-        BOOL allow_modify = canModify(mObjectUUID, item);
-        BOOL source_library = mObjectUUID.isNull() && gInventory.isObjectDescendentOf(mItemUUID, gInventory.getLibraryRootFolderID());
+        bool is_owner = gAgent.allowOperation(PERM_OWNER, perm, GP_OBJECT_MANIPULATE);
+        bool allow_copy = gAgent.allowOperation(PERM_COPY, perm, GP_OBJECT_MANIPULATE);
+        bool allow_modify = canModify(mObjectUUID, item);
+        bool source_library = mObjectUUID.isNull() && gInventory.isObjectDescendentOf(mItemUUID, gInventory.getLibraryRootFolderID());
 
         if (allow_copy || gAgent.isGodlike())
         {
@@ -251,7 +251,7 @@ void LLPreviewNotecard::loadAsset()
             {
                 editor->setText(LLStringUtil::null);
                 editor->makePristine();
-                editor->setEnabled(TRUE);
+                editor->setEnabled(true);
                 mAssetStatus = PREVIEW_ASSET_LOADED;
             }
             else
@@ -272,7 +272,7 @@ void LLPreviewNotecard::loadAsset()
                         mAssetID.setNull();
                         editor->setText(getString("no_object"));
                         editor->makePristine();
-                        editor->setEnabled(FALSE);
+                        editor->setEnabled(false);
                         mAssetStatus = PREVIEW_ASSET_LOADED;
                         return;
                     }
@@ -294,7 +294,7 @@ void LLPreviewNotecard::loadAsset()
                                                 item->getType(),
                                                 &onLoadComplete,
                                                 (void*)user_data,
-                                                TRUE);
+                                                true);
                 mAssetStatus = PREVIEW_ASSET_LOADING;
             }
         }
@@ -303,20 +303,20 @@ void LLPreviewNotecard::loadAsset()
             mAssetID.setNull();
             editor->setText(getString("not_allowed"));
             editor->makePristine();
-            editor->setEnabled(FALSE);
+            editor->setEnabled(false);
             mAssetStatus = PREVIEW_ASSET_LOADED;
         }
 
         if(!allow_modify)
         {
-            editor->setEnabled(FALSE);
-            getChildView("lock")->setVisible( TRUE);
-            getChildView("Edit")->setEnabled(FALSE);
+            editor->setEnabled(false);
+            getChildView("lock")->setVisible( true);
+            getChildView("Edit")->setEnabled(false);
         }
 
         if((allow_modify || is_owner) && !source_library)
         {
-            getChildView("Delete")->setEnabled(TRUE);
+            getChildView("Delete")->setEnabled(true);
         }
     }
     else if (mObjectUUID.notNull() && mItemUUID.notNull())
@@ -347,7 +347,7 @@ void LLPreviewNotecard::loadAsset()
     {
         editor->setText(LLStringUtil::null);
         editor->makePristine();
-        editor->setEnabled(TRUE);
+        editor->setEnabled(true);
         // Don't set asset status here; we may not have set the item id yet
         // (e.g. when this gets called initially)
         //mAssetStatus = PREVIEW_ASSET_LOADED;
@@ -393,7 +393,7 @@ void LLPreviewNotecard::onLoadComplete(const LLUUID& asset_uuid,
             }
 
             previewEditor->makePristine();
-            BOOL modifiable = preview->canModify(preview->mObjectID, preview->getItem());
+            bool modifiable = preview->canModify(preview->mObjectID, preview->getItem());
             preview->setEnabled(modifiable);
             preview->syncExternal();
             preview->mAssetStatus = PREVIEW_ASSET_LOADED;
@@ -593,13 +593,13 @@ bool LLPreviewNotecard::saveIfNeeded(LLInventoryItem* copyitem, bool sync)
                 LLSaveNotecardInfo* info = new LLSaveNotecardInfo(this, mItemUUID, mObjectUUID,
                                                                 tid, copyitem);
 
-                S32 size = buffer.length() + 1;
+                S32 size = static_cast<S32>(buffer.length()) + 1;
                 file.write((U8*)buffer.c_str(), size);
 
                 gAssetStorage->storeAssetData(tid, LLAssetType::AT_NOTECARD,
                                                 &onSaveComplete,
                                                 (void*)info,
-                                                FALSE);
+                                                false);
                 return true;
             }
             else // !gAssetStorage
@@ -659,7 +659,7 @@ void LLPreviewNotecard::onSaveComplete(const LLUUID& asset_uuid, void* user_data
                 LLPointer<LLViewerInventoryItem> new_item = new LLViewerInventoryItem(item);
                 new_item->setAssetUUID(asset_uuid);
                 new_item->setTransactionID(info->mTransactionID);
-                new_item->updateServer(FALSE);
+                new_item->updateServer(false);
                 gInventory.updateItem(new_item);
                 gInventory.notifyObservers();
             }
@@ -725,17 +725,17 @@ void LLPreviewNotecard::onSaveComplete(const LLUUID& asset_uuid, void* user_data
 
 bool LLPreviewNotecard::handleSaveChangesDialog(const LLSD& notification, const LLSD& response)
 {
-    mSaveDialogShown = FALSE;
+    mSaveDialogShown = false;
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
     switch(option)
     {
     case 0:  // "Yes"
-        mCloseAfterSave = TRUE;
+        mCloseAfterSave = true;
         LLPreviewNotecard::onClickSave((void*)this);
         break;
 
     case 1:  // "No"
-        mForceClose = TRUE;
+        mForceClose = true;
         closeFloater();
         break;
 
@@ -764,7 +764,7 @@ bool LLPreviewNotecard::handleConfirmDeleteDialog(const LLSD& notification, cons
         if (item != NULL)
         {
             const LLUUID trash_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_TRASH);
-            gInventory.changeItemParent(item, trash_id, FALSE);
+            gInventory.changeItemParent(item, trash_id, false);
         }
     }
     else
@@ -782,7 +782,7 @@ bool LLPreviewNotecard::handleConfirmDeleteDialog(const LLSD& notification, cons
     }
 
     // close floater, ignore unsaved changes
-    mForceClose = TRUE;
+    mForceClose = true;
     closeFloater();
     return false;
 }
diff --git a/indra/newview/llpreviewnotecard.h b/indra/newview/llpreviewnotecard.h
index a5cd5510a3..db677b1cf9 100644
--- a/indra/newview/llpreviewnotecard.h
+++ b/indra/newview/llpreviewnotecard.h
@@ -53,14 +53,14 @@ public:
 
     // llview
     void draw() override;
-    BOOL handleKeyHere(KEY key, MASK mask) override;
-    void setEnabled( BOOL enabled ) override;
+    bool handleKeyHere(KEY key, MASK mask) override;
+    void setEnabled(bool enabled) override;
 
     // llfloater
-    BOOL canClose() override;
+    bool canClose() override;
 
     // llpanel
-    BOOL postBuild() override;
+    bool postBuild() override;
 
     // reach into the text editor, and grab the drag item
     const LLInventoryItem* getDragItem();
diff --git a/indra/newview/llpreviewscript.cpp b/indra/newview/llpreviewscript.cpp
index 70458af0e8..c2188ea638 100644
--- a/indra/newview/llpreviewscript.cpp
+++ b/indra/newview/llpreviewscript.cpp
@@ -156,7 +156,7 @@ public:
     LLFloaterScriptSearch(LLScriptEdCore* editor_core);
     ~LLFloaterScriptSearch();
 
-    /*virtual*/ BOOL    postBuild();
+    /*virtual*/ bool    postBuild();
     static void show(LLScriptEdCore* editor_core);
     static void onBtnSearch(void* userdata);
     void handleBtnSearch();
@@ -171,7 +171,7 @@ public:
     static LLFloaterScriptSearch* getInstance() { return sInstance; }
 
     virtual bool hasAccelerators() const;
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool handleKeyHere(KEY key, MASK mask);
 
 private:
 
@@ -210,19 +210,19 @@ LLFloaterScriptSearch::LLFloaterScriptSearch(LLScriptEdCore* editor_core)
     }
 }
 
-BOOL LLFloaterScriptSearch::postBuild()
+bool LLFloaterScriptSearch::postBuild()
 {
     mReplaceBox = getChild<LLLineEditor>("replace_text");
     mSearchBox = getChild<LLLineEditor>("search_text");
     mSearchBox->setCommitCallback(boost::bind(&LLFloaterScriptSearch::onSearchBoxCommit, this));
-    mSearchBox->setCommitOnFocusLost(FALSE);
+    mSearchBox->setCommitOnFocusLost(false);
     childSetAction("search_btn", onBtnSearch,this);
     childSetAction("replace_btn", onBtnReplace,this);
     childSetAction("replace_all_btn", onBtnReplaceAll,this);
 
     setDefaultBtn("search_btn");
 
-    return TRUE;
+    return true;
 }
 
 //static
@@ -299,21 +299,21 @@ bool LLFloaterScriptSearch::hasAccelerators() const
     {
         return mEditorCore->hasAccelerators();
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLFloaterScriptSearch::handleKeyHere(KEY key, MASK mask)
+bool LLFloaterScriptSearch::handleKeyHere(KEY key, MASK mask)
 {
     if (mEditorCore)
     {
-        BOOL handled = mEditorCore->handleKeyHere(key, mask);
+        bool handled = mEditorCore->handleKeyHere(key, mask);
         if (!handled)
         {
             LLFloater::handleKeyHere(key, mask);
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLFloaterScriptSearch::onSearchBoxCommit()
@@ -374,7 +374,7 @@ LLScriptEdCore::LLScriptEdCore(
     const std::string& sample,
     const LLHandle<LLFloater>& floater_handle,
     void (*load_callback)(void*),
-    void (*save_callback)(void*, BOOL),
+    void (*save_callback)(void*, bool),
     void (*search_replace_callback) (void* userdata),
     void* userdata,
     bool live,
@@ -387,19 +387,19 @@ LLScriptEdCore::LLScriptEdCore(
     mSaveCallback( save_callback ),
     mSearchReplaceCallback( search_replace_callback ),
     mUserdata( userdata ),
-    mForceClose( FALSE ),
+    mForceClose( false ),
     mLastHelpToken(NULL),
     mLiveHelpHistorySize(0),
-    mEnableSave(FALSE),
+    mEnableSave(false),
     mLiveFile(NULL),
     mLive(live),
     mContainer(container),
-    mHasScriptData(FALSE),
-    mScriptRemoved(FALSE),
-    mSaveDialogShown(FALSE)
+    mHasScriptData(false),
+    mScriptRemoved(false),
+    mSaveDialogShown(false)
 {
     setFollowsAll();
-    setBorderVisible(FALSE);
+    setBorderVisible(false);
 
     setXMLFilename("panel_script_ed.xml");
     llassert_always(mContainer != NULL);
@@ -429,7 +429,7 @@ void LLLiveLSLEditor::experienceChanged()
     if(mScriptEd->getAssociatedExperience() != mExperiences->getSelectedValue().asUUID())
     {
         mScriptEd->enableSave(getIsModifiable());
-        //getChildView("Save_btn")->setEnabled(TRUE);
+        //getChildView("Save_btn")->setEnabled(true);
         mScriptEd->setAssociatedExperience(mExperiences->getSelectedValue().asUUID());
         updateExperiencePanel();
     }
@@ -473,7 +473,7 @@ void LLLiveLSLEditor::onToggleExperience( LLUICtrl *ui, void* userdata )
     self->updateExperiencePanel();
 }
 
-BOOL LLScriptEdCore::postBuild()
+bool LLScriptEdCore::postBuild()
 {
     mErrorList = getChild<LLScrollListCtrl>("lsl errors");
 
@@ -484,7 +484,7 @@ BOOL LLScriptEdCore::postBuild()
     mEditor = getChild<LLScriptEditor>("Script Editor");
 
     childSetCommitCallback("lsl errors", &LLScriptEdCore::onErrorList, this);
-    childSetAction("Save_btn", boost::bind(&LLScriptEdCore::doSave,this,FALSE));
+    childSetAction("Save_btn", boost::bind(&LLScriptEdCore::doSave,this,false));
     childSetAction("Edit_btn", boost::bind(&LLScriptEdCore::openInExternalEditor, this));
 
     initMenu();
@@ -502,7 +502,7 @@ BOOL LLScriptEdCore::postBuild()
         "menu_lsl_font_size.xml", gMenuHolder, LLViewerMenuHolderGL::child_registry_t::instance());
     getChild<LLMenuButton>("font_btn")->setMenu(context_menu, LLMenuButton::MP_BOTTOM_LEFT, true);
 
-    return TRUE;
+    return true;
 }
 
 void LLScriptEdCore::processKeywords()
@@ -546,7 +546,7 @@ void LLScriptEdCore::initMenu()
     LLMenuItemCallGL* menuItem;
 
     menuItem = getChild<LLMenuItemCallGL>("Save");
-    menuItem->setClickCallback(boost::bind(&LLScriptEdCore::doSave, this, FALSE));
+    menuItem->setClickCallback(boost::bind(&LLScriptEdCore::doSave, this, false));
     menuItem->setEnableCallback(boost::bind(&LLScriptEdCore::hasChanged, this));
 
     menuItem = getChild<LLMenuItemCallGL>("Revert All Changes");
@@ -599,7 +599,7 @@ void LLScriptEdCore::initMenu()
     menuItem->setEnableCallback(boost::bind(&LLScriptEdCore::enableSaveToFileMenu, this));
 }
 
-void LLScriptEdCore::setScriptText(const std::string& text, BOOL is_valid)
+void LLScriptEdCore::setScriptText(const std::string& text, bool is_valid)
 {
     if (mEditor)
     {
@@ -704,14 +704,14 @@ bool LLScriptEdCore::hasChanged()
 
 void LLScriptEdCore::draw()
 {
-    BOOL script_changed = hasChanged();
+    bool script_changed = hasChanged();
     getChildView("Save_btn")->setEnabled(script_changed && !mScriptRemoved);
 
     if( mEditor->hasFocus() )
     {
         S32 line = 0;
         S32 column = 0;
-        mEditor->getCurrentLineAndColumn( &line, &column, FALSE );  // don't include wordwrap
+        mEditor->getCurrentLineAndColumn( &line, &column, false );  // don't include wordwrap
         LLStringUtil::format_map_t args;
         std::string cursor_pos;
         args["[LINE]"] = llformat ("%d", line);
@@ -729,7 +729,7 @@ void LLScriptEdCore::draw()
     LLPanel::draw();
 }
 
-void LLScriptEdCore::updateDynamicHelp(BOOL immediate)
+void LLScriptEdCore::updateDynamicHelp(bool immediate)
 {
     LLFloater* help_floater = mLiveHelpHandle.get();
     if (!help_floater) return;
@@ -880,21 +880,21 @@ void LLScriptEdCore::addHelpItemToHistory(const std::string& help_string)
     mLiveHelpHistorySize++;
 }
 
-BOOL LLScriptEdCore::canClose()
+bool LLScriptEdCore::canClose()
 {
     if(mForceClose || !hasChanged() || mScriptRemoved)
     {
-        return TRUE;
+        return true;
     }
     else
     {
         if(!mSaveDialogShown)
         {
-            mSaveDialogShown = TRUE;
+            mSaveDialogShown = true;
             // Bring up view-modal dialog: Save changes? Yes, No, Cancel
             LLNotificationsUtil::add("SaveChanges", LLSD(), LLSD(), boost::bind(&LLScriptEdCore::handleSaveChangesDialog, this, _1, _2));
         }
-        return FALSE;
+        return false;
     }
 }
 
@@ -906,17 +906,17 @@ void LLScriptEdCore::setEnableEditing(bool enable)
 
 bool LLScriptEdCore::handleSaveChangesDialog(const LLSD& notification, const LLSD& response )
 {
-    mSaveDialogShown = FALSE;
+    mSaveDialogShown = false;
     S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
     switch( option )
     {
     case 0:  // "Yes"
         // close after saving
-            doSave( TRUE );
+            doSave( true );
         break;
 
     case 1:  // "No"
-        mForceClose = TRUE;
+        mForceClose = true;
         // This will close immediately because mForceClose is true, so we won't
         // infinite loop with these dialogs. JC
         ((LLFloater*) getParent())->closeFloater();
@@ -941,7 +941,7 @@ void LLScriptEdCore::onBtnDynamicHelp()
         LLFloater* parent = dynamic_cast<LLFloater*>(getParent());
         llassert(parent);
         if (parent)
-            parent->addDependentFloater(live_help_floater, TRUE);
+            parent->addDependentFloater(live_help_floater, true);
         live_help_floater->childSetCommitCallback("lock_check", onCheckLock, this);
         live_help_floater->getChild<LLUICtrl>("lock_check")->setValue(gSavedSettings.getBOOL("ScriptHelpFollowsCursor"));
         live_help_floater->childSetCommitCallback("history_combo", onHelpComboCommit, this);
@@ -949,7 +949,7 @@ void LLScriptEdCore::onBtnDynamicHelp()
         live_help_floater->childSetAction("fwd_btn", onClickForward, this);
 
         LLMediaCtrl* browser = live_help_floater->getChild<LLMediaCtrl>("lsl_guide_html");
-        browser->setAlwaysRefresh(TRUE);
+        browser->setAlwaysRefresh(true);
 
         LLComboBox* help_combo = live_help_floater->getChild<LLComboBox>("history_combo");
         LLKeywordToken *token;
@@ -969,12 +969,12 @@ void LLScriptEdCore::onBtnDynamicHelp()
         mLiveHelpHistorySize = 0;
     }
 
-    BOOL visible = TRUE;
-    BOOL take_focus = TRUE;
+    bool visible = true;
+    bool take_focus = true;
     live_help_floater->setVisible(visible);
     live_help_floater->setFrontmost(take_focus);
 
-    updateDynamicHelp(TRUE);
+    updateDynamicHelp(true);
 }
 
 //static
@@ -1058,11 +1058,11 @@ void LLScriptEdCore::onBtnInsertFunction(LLUICtrl *ui, void* userdata)
     {
         self->mEditor->insertText(self->mFunctions->getSimple());
     }
-    self->mEditor->setFocus(TRUE);
+    self->mEditor->setFocus(true);
     self->setHelpPage(self->mFunctions->getSimple());
 }
 
-void LLScriptEdCore::doSave( BOOL close_after_save )
+void LLScriptEdCore::doSave( bool close_after_save )
 {
     add(LLStatViewer::LSL_SAVES, 1);
 
@@ -1158,7 +1158,7 @@ void LLScriptEdCore::onErrorList(LLUICtrl*, void* user_data)
         //LL_INFOS() << "LLScriptEdCore::onErrorList() - " << row << ", "
         //<< column << LL_ENDL;
         self->mEditor->setCursor(row, column);
-        self->mEditor->setFocus(TRUE);
+        self->mEditor->setFocus(true);
     }
 }
 
@@ -1170,7 +1170,7 @@ bool LLScriptEdCore::handleReloadFromServerDialog(const LLSD& notification, cons
     case 0: // "Yes"
         if( mLoadCallback )
         {
-            setScriptText(getString("loading"), FALSE);
+            setScriptText(getString("loading"), false);
             mLoadCallback(mUserdata);
         }
         break;
@@ -1203,9 +1203,9 @@ struct LLEntryAndEdCore
 
 void LLScriptEdCore::deleteBridges()
 {
-    S32 count = mBridges.size();
+    auto count = mBridges.size();
     LLEntryAndEdCore* eandc;
-    for(S32 i = 0; i < count; i++)
+    for(size_t i = 0; i < count; i++)
     {
         eandc = mBridges.at(i);
         delete eandc;
@@ -1215,7 +1215,7 @@ void LLScriptEdCore::deleteBridges()
 }
 
 // virtual
-BOOL LLScriptEdCore::handleKeyHere(KEY key, MASK mask)
+bool LLScriptEdCore::handleKeyHere(KEY key, MASK mask)
 {
     bool just_control = MASK_CONTROL == (mask & MASK_MODIFIERS);
 
@@ -1224,10 +1224,10 @@ BOOL LLScriptEdCore::handleKeyHere(KEY key, MASK mask)
         if(mSaveCallback)
         {
             // don't close after saving
-            mSaveCallback(mUserdata, FALSE);
+            mSaveCallback(mUserdata, false);
         }
 
-        return TRUE;
+        return true;
     }
 
     if(('F' == key) && just_control)
@@ -1237,10 +1237,10 @@ BOOL LLScriptEdCore::handleKeyHere(KEY key, MASK mask)
             mSearchReplaceCallback(mUserdata);
         }
 
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLScriptEdCore::onBtnLoadFromFile( void* data )
@@ -1300,7 +1300,7 @@ void LLScriptEdCore::saveScriptToFile(const std::vector<std::string>& filenames,
         llofstream fout(filename.c_str());
         fout << (scriptText);
         fout.close();
-        self->mSaveCallback(self->mUserdata, FALSE);
+        self->mSaveCallback(self->mUserdata, false);
     }
 }
 
@@ -1314,7 +1314,7 @@ bool LLScriptEdCore::canLoadOrSaveToFile( void* userdata )
 bool LLScriptEdCore::enableSaveToFileMenu(void* userdata)
 {
     LLScriptEdCore* self = (LLScriptEdCore*)userdata;
-    if (!self || !self->mEditor) return FALSE;
+    if (!self || !self->mEditor) return false;
     return self->mEditor->canLoadOrSaveToFile();
 }
 
@@ -1322,7 +1322,7 @@ bool LLScriptEdCore::enableSaveToFileMenu(void* userdata)
 bool LLScriptEdCore::enableLoadFromFileMenu(void* userdata)
 {
     LLScriptEdCore* self = (LLScriptEdCore*)userdata;
-    return (self && self->mEditor) ? self->mEditor->canLoadOrSaveToFile() : FALSE;
+    return (self && self->mEditor) ? self->mEditor->canLoadOrSaveToFile() : false;
 }
 
 LLUUID LLScriptEdCore::getAssociatedExperience()const
@@ -1355,26 +1355,26 @@ void LLLiveLSLEditor::updateExperiencePanel()
 {
     if(mScriptEd->getAssociatedExperience().isNull())
     {
-        mExperienceEnabled->set(FALSE);
-        mExperiences->setVisible(FALSE);
+        mExperienceEnabled->set(false);
+        mExperiences->setVisible(false);
         if(mExperienceIds.size()>0)
         {
-            mExperienceEnabled->setEnabled(TRUE);
+            mExperienceEnabled->setEnabled(true);
             mExperienceEnabled->setToolTip(getString("add_experiences"));
         }
         else
         {
-            mExperienceEnabled->setEnabled(FALSE);
+            mExperienceEnabled->setEnabled(false);
             mExperienceEnabled->setToolTip(getString("no_experiences"));
         }
-        getChild<LLButton>("view_profile")->setVisible(FALSE);
+        getChild<LLButton>("view_profile")->setVisible(false);
     }
     else
     {
         mExperienceEnabled->setToolTip(getString("experience_enabled"));
         mExperienceEnabled->setEnabled(getIsModifiable());
-        mExperiences->setVisible(TRUE);
-        mExperienceEnabled->set(TRUE);
+        mExperiences->setVisible(true);
+        mExperienceEnabled->set(true);
         getChild<LLButton>("view_profile")->setToolTip(getString("show_experience_profile"));
         buildExperienceList();
     }
@@ -1431,20 +1431,20 @@ void LLLiveLSLEditor::buildExperienceList()
             item=mExperiences->add(getString("loading"), associated, ADD_TOP);
             last = associated;
         }
-        item->setEnabled(FALSE);
+        item->setEnabled(false);
     }
 
     if(last.notNull())
     {
-        mExperiences->setEnabled(FALSE);
+        mExperiences->setEnabled(false);
         LLExperienceCache::instance().get(last, boost::bind(&LLLiveLSLEditor::buildExperienceList, this));
     }
     else
     {
-        mExperiences->setEnabled(TRUE);
-        mExperiences->sortByName(TRUE);
+        mExperiences->setEnabled(true);
+        mExperiences->sortByName(true);
         mExperiences->setCurrentByIndex(mExperiences->getCurrentIndex());
-        getChild<LLButton>("view_profile")->setVisible(TRUE);
+        getChild<LLButton>("view_profile")->setVisible(true);
     }
 }
 
@@ -1532,21 +1532,22 @@ bool LLScriptEdContainer::onExternalChange(const std::string& filename)
     return true;
 }
 
-BOOL LLScriptEdContainer::handleKeyHere(KEY key, MASK mask)
+bool LLScriptEdContainer::handleKeyHere(KEY key, MASK mask)
 {
     if (('A' == key) && (MASK_CONTROL == (mask & MASK_MODIFIERS)))
     {
         mScriptEd->selectAll();
-        return TRUE;
+        return true;
     }
 
     if (!LLPreview::handleKeyHere(key, mask))
     {
         return mScriptEd->handleKeyHere(key, mask);
     }
-    return TRUE;
+    return true;
 }
-    /// ---------------------------------------------------------------------------
+
+/// ---------------------------------------------------------------------------
 /// LLPreviewLSL
 /// ---------------------------------------------------------------------------
 
@@ -1598,7 +1599,7 @@ LLPreviewLSL::~LLPreviewLSL()
 }
 
 // virtual
-BOOL LLPreviewLSL::postBuild()
+bool LLPreviewLSL::postBuild()
 {
     const LLInventoryItem* item = getItem();
 
@@ -1623,7 +1624,7 @@ void LLPreviewLSL::draw()
     if(!item)
     {
         setTitle(LLTrans::getString("ScriptWasDeleted"));
-        mScriptEd->setItemRemoved(TRUE);
+        mScriptEd->setItemRemoved(true);
     }
     else if (mDirty)
     {
@@ -1668,7 +1669,7 @@ void LLPreviewLSL::loadAsset()
     // then it might be part of the inventory library. If it's in the
     // library, then you can see the script, but not modify it.
     const LLInventoryItem* item = gInventory.getItem(mItemUUID);
-    BOOL is_library = item
+    bool is_library = item
         && !gInventory.isObjectDescendentOf(mItemUUID,
                                             gInventory.getRootFolderID());
     if(!item)
@@ -1678,9 +1679,9 @@ void LLPreviewLSL::loadAsset()
     }
     if(item)
     {
-        BOOL is_copyable = gAgent.allowOperation(PERM_COPY,
+        bool is_copyable = gAgent.allowOperation(PERM_COPY,
                                 item->getPermissions(), GP_OBJECT_MANIPULATE);
-        BOOL is_modifiable = gAgent.allowOperation(PERM_MODIFY,
+        bool is_modifiable = gAgent.allowOperation(PERM_MODIFY,
                                 item->getPermissions(), GP_OBJECT_MANIPULATE);
         if (gAgent.isGodlike() || (is_copyable && (is_modifiable || is_library)))
         {
@@ -1695,14 +1696,14 @@ void LLPreviewLSL::loadAsset()
                                         item->getType(),
                                         &LLPreviewLSL::onLoadComplete,
                                         (void*)new_uuid,
-                                        TRUE);
+                                        true);
             mAssetStatus = PREVIEW_ASSET_LOADING;
         }
         else
         {
-            mScriptEd->setScriptText(mScriptEd->getString("can_not_view"), FALSE);
+            mScriptEd->setScriptText(mScriptEd->getString("can_not_view"), false);
             mScriptEd->mEditor->makePristine();
-            mScriptEd->mFunctions->setEnabled(FALSE);
+            mScriptEd->mFunctions->setEnabled(false);
             mAssetStatus = PREVIEW_ASSET_LOADED;
         }
         getChildView("lock")->setVisible( !is_modifiable);
@@ -1710,14 +1711,14 @@ void LLPreviewLSL::loadAsset()
     }
     else
     {
-        mScriptEd->setScriptText(std::string(HELLO_LSL), TRUE);
-        mScriptEd->setEnableEditing(TRUE);
+        mScriptEd->setScriptText(std::string(HELLO_LSL), true);
+        mScriptEd->setEnableEditing(true);
         mAssetStatus = PREVIEW_ASSET_LOADED;
     }
 }
 
 
-BOOL LLPreviewLSL::canClose()
+bool LLPreviewLSL::canClose()
 {
     return mScriptEd->canClose();
 }
@@ -1748,7 +1749,7 @@ void LLPreviewLSL::onLoad(void* userdata)
 }
 
 // static
-void LLPreviewLSL::onSave(void* userdata, BOOL close_after_save)
+void LLPreviewLSL::onSave(void* userdata, bool close_after_save)
 {
     LLPreviewLSL* self = (LLPreviewLSL*)userdata;
     self->mCloseAfterSave = close_after_save;
@@ -1865,12 +1866,12 @@ void LLPreviewLSL::onLoadComplete(const LLUUID& asset_uuid, LLAssetType::EType t
 
             // put a EOS at the end
             buffer[file_length] = 0;
-            preview->mScriptEd->setScriptText(LLStringExplicit(&buffer[0]), TRUE);
+            preview->mScriptEd->setScriptText(LLStringExplicit(&buffer[0]), true);
             preview->mScriptEd->mEditor->makePristine();
 
             std::string script_name = DEFAULT_SCRIPT_NAME;
             LLInventoryItem* item = gInventory.getItem(*item_uuid);
-            BOOL is_modifiable = FALSE;
+            bool is_modifiable = false;
             if (item)
             {
                 if (!item->getName().empty())
@@ -1879,7 +1880,7 @@ void LLPreviewLSL::onLoadComplete(const LLUUID& asset_uuid, LLAssetType::EType t
                 }
                 if (gAgent.allowOperation(PERM_MODIFY, item->getPermissions(), GP_OBJECT_MANIPULATE))
                 {
-                    is_modifiable = TRUE;
+                    is_modifiable = true;
                 }
             }
             preview->mScriptEd->setScriptName(script_name);
@@ -1937,32 +1938,32 @@ void* LLLiveLSLEditor::createScriptEdPanel(void* userdata)
 
 LLLiveLSLEditor::LLLiveLSLEditor(const LLSD& key) :
     LLScriptEdContainer(key),
-    mAskedForRunningInfo(FALSE),
-    mHaveRunningInfo(FALSE),
-    mCloseAfterSave(FALSE),
+    mAskedForRunningInfo(false),
+    mHaveRunningInfo(false),
+    mCloseAfterSave(false),
     mPendingUploads(0),
-    mIsModifiable(FALSE),
+    mIsModifiable(false),
     mIsNew(false),
-    mIsSaving(FALSE),
+    mIsSaving(false),
     mObjectName("")
 {
     mFactoryMap["script ed panel"] = LLCallbackMap(LLLiveLSLEditor::createScriptEdPanel, this);
 }
 
-BOOL LLLiveLSLEditor::postBuild()
+bool LLLiveLSLEditor::postBuild()
 {
     childSetCommitCallback("running", LLLiveLSLEditor::onRunningCheckboxClicked, this);
-    getChildView("running")->setEnabled(FALSE);
+    getChildView("running")->setEnabled(false);
 
     childSetAction("Reset",&LLLiveLSLEditor::onReset,this);
-    getChildView("Reset")->setEnabled(TRUE);
+    getChildView("Reset")->setEnabled(true);
 
     mMonoCheckbox = getChild<LLCheckBoxCtrl>("mono");
     childSetCommitCallback("mono", &LLLiveLSLEditor::onMonoCheckboxClicked, this);
-    getChildView("mono")->setEnabled(FALSE);
+    getChildView("mono")->setEnabled(true);
 
     mScriptEd->mEditor->makePristine();
-    mScriptEd->mEditor->setFocus(TRUE);
+    mScriptEd->mEditor->setFocus(true);
 
 
     mExperiences = getChild<LLComboBox>("Experiences...");
@@ -1986,7 +1987,7 @@ void LLLiveLSLEditor::callbackLSLCompileSucceeded(const LLUUID& task_id,
     mScriptEd->mErrorList->setCommentText(LLTrans::getString("CompileSuccessful"));
     mScriptEd->mErrorList->setCommentText(LLTrans::getString("SaveComplete"));
     getChild<LLCheckBoxCtrl>("running")->set(is_script_running);
-    mIsSaving = FALSE;
+    mIsSaving = false;
     closeIfNeeded();
 }
 
@@ -2007,7 +2008,7 @@ void LLLiveLSLEditor::callbackLSLCompileFailed(const LLSD& compile_errors)
         mScriptEd->mErrorList->addElement(row);
     }
     mScriptEd->selectFirstError();
-    mIsSaving = FALSE;
+    mIsSaving = false;
     closeIfNeeded();
 }
 
@@ -2039,9 +2040,9 @@ void LLLiveLSLEditor::loadAsset()
                 if(!isGodlike && (!copyManipulate || !mIsModifiable))
                 {
                     mItem = new LLViewerInventoryItem(item);
-                    mScriptEd->setScriptText(getString("not_allowed"), FALSE);
+                    mScriptEd->setScriptText(getString("not_allowed"), false);
                     mScriptEd->mEditor->makePristine();
-                    mScriptEd->enableSave(FALSE);
+                    mScriptEd->enableSave(false);
                     mAssetStatus = PREVIEW_ASSET_LOADED;
                 }
                 else if(copyManipulate || isGodlike)
@@ -2060,24 +2061,24 @@ void LLLiveLSLEditor::loadAsset()
                         item->getType(),
                         &LLLiveLSLEditor::onLoadComplete,
                         (void*)user_data,
-                        TRUE);
+                        true);
                     LLMessageSystem* msg = gMessageSystem;
                     msg->newMessageFast(_PREHASH_GetScriptRunning);
                     msg->nextBlockFast(_PREHASH_Script);
                     msg->addUUIDFast(_PREHASH_ObjectID, mObjectUUID);
                     msg->addUUIDFast(_PREHASH_ItemID, mItemUUID);
                     msg->sendReliable(object->getRegion()->getHost());
-                    mAskedForRunningInfo = TRUE;
+                    mAskedForRunningInfo = true;
                     mAssetStatus = PREVIEW_ASSET_LOADING;
                 }
             }
 
             if(mItem.isNull())
             {
-                mScriptEd->setScriptText(LLStringUtil::null, FALSE);
+                mScriptEd->setScriptText(LLStringUtil::null, false);
                 mScriptEd->mEditor->makePristine();
                 mAssetStatus = PREVIEW_ASSET_LOADED;
-                mIsModifiable = FALSE;
+                mIsModifiable = false;
             }
 
             refreshFromItem();
@@ -2100,8 +2101,8 @@ void LLLiveLSLEditor::loadAsset()
     }
     else
     {
-        mScriptEd->setScriptText(std::string(HELLO_LSL), TRUE);
-        mScriptEd->enableSave(FALSE);
+        mScriptEd->setScriptText(std::string(HELLO_LSL), true);
+        mScriptEd->enableSave(false);
         LLPermissions perm;
         perm.init(gAgent.getID(), gAgent.getID(), LLUUID::null, gAgent.getGroupID());
         perm.initMasks(PERM_ALL, PERM_ALL, PERM_NONE, PERM_NONE, PERM_MOVE | PERM_TRANSFER);
@@ -2138,7 +2139,7 @@ void LLLiveLSLEditor::onLoadComplete(const LLUUID& asset_id,
         if( LL_ERR_NOERR == status )
         {
             instance->loadScriptText(asset_id, type);
-            instance->mScriptEd->setEnableEditing(TRUE);
+            instance->mScriptEd->setEnableEditing(true);
             instance->mAssetStatus = PREVIEW_ASSET_LOADED;
             instance->mScriptEd->setAssetID(asset_id);
         }
@@ -2179,7 +2180,7 @@ void LLLiveLSLEditor::loadScriptText(const LLUUID &uuid, LLAssetType::EType type
 
     buffer[file_length] = '\0';
 
-    mScriptEd->setScriptText(LLStringExplicit(&buffer[0]), TRUE);
+    mScriptEd->setScriptText(LLStringExplicit(&buffer[0]), true);
     mScriptEd->makeEditorPristine();
 
     std::string script_name = DEFAULT_SCRIPT_NAME;
@@ -2198,7 +2199,7 @@ void LLLiveLSLEditor::onRunningCheckboxClicked( LLUICtrl*, void* userdata )
     LLLiveLSLEditor* self = (LLLiveLSLEditor*) userdata;
     LLViewerObject* object = gObjectList.findObject( self->mObjectUUID );
     LLCheckBoxCtrl* runningCheckbox = self->getChild<LLCheckBoxCtrl>("running");
-    BOOL running =  runningCheckbox->get();
+    bool running =  runningCheckbox->get();
     //self->mRunningCheckbox->get();
     if( object )
     {
@@ -2257,14 +2258,14 @@ void LLLiveLSLEditor::draw()
         else
         {
             runningCheckbox->setLabel(getString("public_objects_can_not_run"));
-            runningCheckbox->setEnabled(FALSE);
+            runningCheckbox->setEnabled(false);
 
             // *FIX: Set it to false so that the ui is correct for
             // a box that is released to public. It could be
             // incorrect after a release/claim cycle, but will be
             // correct after clicking on it.
-            runningCheckbox->set(FALSE);
-            mMonoCheckbox->set(FALSE);
+            runningCheckbox->set(false);
+            mMonoCheckbox->set(false);
         }
     }
     else if(!object)
@@ -2272,10 +2273,10 @@ void LLLiveLSLEditor::draw()
         // HACK: Display this information in the title bar.
         // Really ought to put in main window.
         setTitle(LLTrans::getString("ObjectOutOfRange"));
-        runningCheckbox->setEnabled(FALSE);
-        mMonoCheckbox->setEnabled(FALSE);
+        runningCheckbox->setEnabled(false);
+        mMonoCheckbox->setEnabled(false);
         // object may have fallen out of range.
-        mHaveRunningInfo = FALSE;
+        mHaveRunningInfo = false;
     }
 
     LLPreview::draw();
@@ -2292,15 +2293,15 @@ void LLLiveLSLEditor::onSearchReplace(void* userdata)
 
 struct LLLiveLSLSaveData
 {
-    LLLiveLSLSaveData(const LLUUID& id, const LLViewerInventoryItem* item, BOOL active);
+    LLLiveLSLSaveData(const LLUUID& id, const LLViewerInventoryItem* item, bool active);
     LLUUID mSaveObjectID;
     LLPointer<LLViewerInventoryItem> mItem;
-    BOOL mActive;
+    bool mActive;
 };
 
 LLLiveLSLSaveData::LLLiveLSLSaveData(const LLUUID& id,
                                      const LLViewerInventoryItem* item,
-                                     BOOL active) :
+                                     bool active) :
     mSaveObjectID(id),
     mActive(active)
 {
@@ -2308,7 +2309,6 @@ LLLiveLSLSaveData::LLLiveLSLSaveData(const LLUUID& id,
     mItem = new LLViewerInventoryItem(item);
 }
 
-
 /*static*/
 void LLLiveLSLEditor::finishLSLUpload(LLUUID itemId, LLUUID taskId, LLUUID newAssetId, LLSD response, bool isRunning)
 {
@@ -2332,15 +2332,13 @@ void LLLiveLSLEditor::finishLSLUpload(LLUUID itemId, LLUUID taskId, LLUUID newAs
             preview->callbackLSLCompileFailed(response["errors"]);
         }
     }
-
 }
 
-
 // virtual
 void LLLiveLSLEditor::saveIfNeeded(bool sync /*= true*/)
 {
     LLViewerObject* object = gObjectList.findObject(mObjectUUID);
-    if(!object)
+    if (!object)
     {
         LLNotificationsUtil::add("SaveScriptFailObjectNotFound");
         return;
@@ -2365,7 +2363,7 @@ void LLLiveLSLEditor::saveIfNeeded(bool sync /*= true*/)
     }
 
     // Don't need to save if we're pristine
-    if(!mScriptEd->hasChanged())
+    if (!mScriptEd->hasChanged())
     {
         return;
     }
@@ -2373,7 +2371,7 @@ void LLLiveLSLEditor::saveIfNeeded(bool sync /*= true*/)
     mPendingUploads = 0;
 
     // save the script
-    mScriptEd->enableSave(FALSE);
+    mScriptEd->enableSave(false);
     mScriptEd->mEditor->makePristine();
     mScriptEd->mErrorList->deleteAllItems();
     mScriptEd->mEditor->makePristine();
@@ -2382,6 +2380,7 @@ void LLLiveLSLEditor::saveIfNeeded(bool sync /*= true*/)
     {
         mScriptEd->sync();
     }
+
     bool isRunning = getChild<LLCheckBoxCtrl>("running")->get();
     getWindow()->incBusyCount();
     mPendingUploads++;
@@ -2406,16 +2405,16 @@ void LLLiveLSLEditor::saveIfNeeded(bool sync /*= true*/)
     }
 }
 
-BOOL LLLiveLSLEditor::canClose()
+bool LLLiveLSLEditor::canClose()
 {
-    return (mScriptEd->canClose());
+    return mScriptEd->canClose();
 }
 
 void LLLiveLSLEditor::closeIfNeeded()
 {
     getWindow()->decBusyCount();
     mPendingUploads--;
-    if (mPendingUploads <= 0 && mCloseAfterSave)
+    if ((mPendingUploads <= 0) && mCloseAfterSave)
     {
         closeFloater();
     }
@@ -2429,10 +2428,9 @@ void LLLiveLSLEditor::onLoad(void* userdata)
 }
 
 // static
-void LLLiveLSLEditor::onSave(void* userdata, BOOL close_after_save)
+void LLLiveLSLEditor::onSave(void* userdata, bool close_after_save)
 {
-    LLLiveLSLEditor* self = (LLLiveLSLEditor*)userdata;
-    if(self)
+    if (LLLiveLSLEditor* self = (LLLiveLSLEditor*)userdata)
     {
         self->mCloseAfterSave = close_after_save;
         self->mScriptEd->mErrorList->setCommentText("");
@@ -2440,7 +2438,6 @@ void LLLiveLSLEditor::onSave(void* userdata, BOOL close_after_save)
     }
 }
 
-
 // static
 void LLLiveLSLEditor::processScriptRunningReply(LLMessageSystem* msg, void**)
 {
@@ -2452,15 +2449,14 @@ void LLLiveLSLEditor::processScriptRunningReply(LLMessageSystem* msg, void**)
     LLSD floater_key;
     floater_key["taskid"] = object_id;
     floater_key["itemid"] = item_id;
-    LLLiveLSLEditor* instance = LLFloaterReg::findTypedInstance<LLLiveLSLEditor>("preview_scriptedit", floater_key);
-    if(instance)
+    if (LLLiveLSLEditor* instance = LLFloaterReg::findTypedInstance<LLLiveLSLEditor>("preview_scriptedit", floater_key))
     {
-        instance->mHaveRunningInfo = TRUE;
-        BOOL running;
+        instance->mHaveRunningInfo = true;
+        bool running;
         msg->getBOOLFast(_PREHASH_Script, _PREHASH_Running, running);
         LLCheckBoxCtrl* runningCheckbox = instance->getChild<LLCheckBoxCtrl>("running");
         runningCheckbox->set(running);
-        BOOL mono;
+        bool mono;
         msg->getBOOLFast(_PREHASH_Script, "Mono", mono);
         LLCheckBoxCtrl* monoCheckbox = instance->getChild<LLCheckBoxCtrl>("mono");
         monoCheckbox->setEnabled(instance->getIsModifiable() && have_script_upload_cap(object_id));
@@ -2468,7 +2464,6 @@ void LLLiveLSLEditor::processScriptRunningReply(LLMessageSystem* msg, void**)
     }
 }
 
-
 void LLLiveLSLEditor::onMonoCheckboxClicked(LLUICtrl*, void* userdata)
 {
     LLLiveLSLEditor* self = static_cast<LLLiveLSLEditor*>(userdata);
@@ -2476,22 +2471,17 @@ void LLLiveLSLEditor::onMonoCheckboxClicked(LLUICtrl*, void* userdata)
     self->mScriptEd->enableSave(self->getIsModifiable());
 }
 
-BOOL LLLiveLSLEditor::monoChecked() const
+bool LLLiveLSLEditor::monoChecked() const
 {
-    if(NULL != mMonoCheckbox)
-    {
-        return mMonoCheckbox->getValue()? TRUE : FALSE;
-    }
-    return FALSE;
+    return mMonoCheckbox && mMonoCheckbox->getValue();
 }
 
 void LLLiveLSLEditor::setAssociatedExperience( LLHandle<LLLiveLSLEditor> editor, const LLSD& experience )
 {
-    LLLiveLSLEditor* scriptEd = editor.get();
-    if(scriptEd)
+    if (LLLiveLSLEditor* scriptEd = editor.get())
     {
         LLUUID id;
-        if(experience.has(LLExperienceCache::EXPERIENCE_ID))
+        if (experience.has(LLExperienceCache::EXPERIENCE_ID))
         {
             id=experience[LLExperienceCache::EXPERIENCE_ID].asUUID();
         }
diff --git a/indra/newview/llpreviewscript.h b/indra/newview/llpreviewscript.h
index e554f049a5..9a3bc35f12 100644
--- a/indra/newview/llpreviewscript.h
+++ b/indra/newview/llpreviewscript.h
@@ -89,7 +89,7 @@ protected:
         const std::string& sample,
         const LLHandle<LLFloater>& floater_handle,
         void (*load_callback)(void* userdata),
-        void (*save_callback)(void* userdata, BOOL close_after_save),
+        void (*save_callback)(void* userdata, bool close_after_save),
         void (*search_replace_callback)(void* userdata),
         void* userdata,
         bool live,
@@ -97,24 +97,22 @@ protected:
 public:
     ~LLScriptEdCore();
 
-    void            initializeKeywords();
     void            initMenu();
     void            processKeywords();
-    void            processLoaded();
 
     virtual void    draw();
-    /*virtual*/ BOOL    postBuild();
-    BOOL            canClose();
+    /*virtual*/ bool    postBuild();
+    bool            canClose();
     void            setEnableEditing(bool enable);
     bool            canLoadOrSaveToFile( void* userdata );
 
-    void            setScriptText(const std::string& text, BOOL is_valid);
+    void            setScriptText(const std::string& text, bool is_valid);
     void            makeEditorPristine();
     bool            loadScriptText(const std::string& filename);
     bool            writeToFile(const std::string& filename);
     void            sync();
 
-    void            doSave( BOOL close_after_save );
+    void            doSave( bool close_after_save );
 
     bool            handleSaveChangesDialog(const LLSD& notification, const LLSD& response);
     bool            handleReloadFromServerDialog(const LLSD& notification, const LLSD& response);
@@ -150,7 +148,7 @@ public:
     bool isFontSizeChecked(const LLSD &userdata);
     void onChangeFontSize(const LLSD &size_name);
 
-    virtual BOOL handleKeyHere(KEY key, MASK mask);
+    virtual bool handleKeyHere(KEY key, MASK mask);
     void selectAll() { mEditor->selectAll(); }
 
   private:
@@ -161,12 +159,12 @@ public:
 
     void selectFirstError();
 
-    void enableSave(BOOL b) {mEnableSave = b;}
+    void enableSave(bool b) {mEnableSave = b;}
 
 protected:
     void deleteBridges();
     void setHelpPage(const std::string& help_string);
-    void updateDynamicHelp(BOOL immediate = FALSE);
+    void updateDynamicHelp(bool immediate = false);
     bool isKeyword(LLKeywordToken* token);
     void addHelpItemToHistory(const std::string& help_string);
     static void onErrorList(LLUICtrl*, void* user_data);
@@ -178,11 +176,11 @@ private:
     std::string     mScriptName;
     LLScriptEditor* mEditor;
     void            (*mLoadCallback)(void* userdata);
-    void            (*mSaveCallback)(void* userdata, BOOL close_after_save);
+    void            (*mSaveCallback)(void* userdata, bool close_after_save);
     void            (*mSearchReplaceCallback) (void* userdata);
     void*           mUserdata;
     LLComboBox      *mFunctions;
-    BOOL            mForceClose;
+    bool            mForceClose;
     LLPanel*        mCodePanel;
     LLScrollListCtrl* mErrorList;
     std::vector<LLEntryAndEdCore*> mBridges;
@@ -190,12 +188,12 @@ private:
     LLKeywordToken* mLastHelpToken;
     LLFrameTimer    mLiveHelpTimer;
     S32             mLiveHelpHistorySize;
-    BOOL            mEnableSave;
-    BOOL            mHasScriptData;
+    bool            mEnableSave;
+    bool            mHasScriptData;
     LLLiveLSLFile*  mLiveFile;
     LLUUID          mAssociatedExperience;
-    BOOL            mScriptRemoved;
-    BOOL            mSaveDialogShown;
+    bool            mScriptRemoved;
+    bool            mSaveDialogShown;
     LLUUID          mAssetID;
 
     LLScriptEdContainer* mContainer; // parent view
@@ -213,7 +211,7 @@ public:
     LLScriptEdContainer(const LLSD& key);
     LLScriptEdContainer(const LLSD& key, const bool live);
 
-    BOOL handleKeyHere(KEY key, MASK mask);
+    bool handleKeyHere(KEY key, MASK mask);
 
 protected:
     std::string     getTmpFileName(const std::string& script_name);
@@ -237,11 +235,11 @@ public:
     virtual void callbackLSLCompileSucceeded();
     virtual void callbackLSLCompileFailed(const LLSD& compile_errors);
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
 protected:
     virtual void draw();
-    virtual BOOL canClose();
+    virtual bool canClose();
     void closeIfNeeded();
 
     virtual void loadAsset();
@@ -249,7 +247,7 @@ protected:
 
     static void onSearchReplace(void* userdata);
     static void onLoad(void* userdata);
-    static void onSave(void* userdata, BOOL close_after_save);
+    static void onSave(void* userdata, bool close_after_save);
 
     static void onLoadComplete(const LLUUID& uuid,
                                LLAssetType::EType type,
@@ -285,9 +283,9 @@ public:
                                             bool is_script_running);
     virtual void callbackLSLCompileFailed(const LLSD& compile_errors);
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
-    void setIsNew() { mIsNew = TRUE; }
+    void setIsNew() { mIsNew = true; }
 
     static void setAssociatedExperience( LLHandle<LLLiveLSLEditor> editor, const LLSD& experience );
     static void onToggleExperience(LLUICtrl *ui, void* userdata);
@@ -298,24 +296,22 @@ public:
     void updateExperiencePanel();
     void requestExperiences();
     void experienceChanged();
-    void addAssociatedExperience(const LLSD& experience);
 
     void setObjectName(std::string name) { mObjectName = name; }
 
 private:
-    virtual BOOL canClose();
+    virtual bool canClose();
     void closeIfNeeded();
     virtual void draw();
 
     virtual void loadAsset();
-    void loadAsset(BOOL is_new);
     /*virtual*/ void saveIfNeeded(bool sync = true);
-    BOOL monoChecked() const;
+    bool monoChecked() const;
 
 
     static void onSearchReplace(void* userdata);
     static void onLoad(void* userdata);
-    static void onSave(void* userdata, BOOL close_after_save);
+    static void onSave(void* userdata, bool close_after_save);
 
     static void onLoadComplete(const LLUUID& asset_uuid,
                                LLAssetType::EType type,
@@ -325,8 +321,6 @@ private:
 
     void loadScriptText(const LLUUID &uuid, LLAssetType::EType type);
 
-    static void onErrorList(LLUICtrl*, void* user_data);
-
     static void* createScriptEdPanel(void* userdata);
 
     static void onMonoCheckboxClicked(LLUICtrl*, void* userdata);
@@ -337,21 +331,21 @@ private:
 private:
     bool                mIsNew;
     //LLUUID mTransmitID;
-    LLCheckBoxCtrl*     mRunningCheckbox;
-    BOOL                mAskedForRunningInfo;
-    BOOL                mHaveRunningInfo;
-    LLButton*           mResetButton;
+    //LLCheckBoxCtrl*       mRunningCheckbox;
+    bool                mAskedForRunningInfo;
+    bool                mHaveRunningInfo;
+    //LLButton*         mResetButton;
     LLPointer<LLViewerInventoryItem> mItem;
-    BOOL                mCloseAfterSave;
+    bool                mCloseAfterSave;
     // need to save both text and script, so need to decide when done
     S32                 mPendingUploads;
 
-    BOOL                mIsSaving;
+    bool                mIsSaving;
 
-    BOOL getIsModifiable() const { return mIsModifiable; } // Evaluated on load assert
+    bool getIsModifiable() const { return mIsModifiable; } // Evaluated on load assert
 
     LLCheckBoxCtrl* mMonoCheckbox;
-    BOOL mIsModifiable;
+    bool mIsModifiable;
 
 
     LLComboBox*     mExperiences;
diff --git a/indra/newview/llpreviewsound.cpp b/indra/newview/llpreviewsound.cpp
index 3c910171cf..eab40429f9 100644
--- a/indra/newview/llpreviewsound.cpp
+++ b/indra/newview/llpreviewsound.cpp
@@ -48,7 +48,7 @@ LLPreviewSound::LLPreviewSound(const LLSD& key)
 }
 
 // virtual
-BOOL    LLPreviewSound::postBuild()
+bool    LLPreviewSound::postBuild()
 {
     const LLInventoryItem* item = getItem();
     if (item)
diff --git a/indra/newview/llpreviewsound.h b/indra/newview/llpreviewsound.h
index e1bca7f4e3..b456a7e854 100644
--- a/indra/newview/llpreviewsound.h
+++ b/indra/newview/llpreviewsound.h
@@ -38,7 +38,7 @@ public:
     static void auditionSound( void* userdata );
 
 protected:
-    /* virtual */ BOOL  postBuild();
+    bool postBuild() override;
 };
 
 #endif  // LL_LLPREVIEWSOUND_H
diff --git a/indra/newview/llpreviewtexture.cpp b/indra/newview/llpreviewtexture.cpp
index 5e19d770a6..259332a3ff 100644
--- a/indra/newview/llpreviewtexture.cpp
+++ b/indra/newview/llpreviewtexture.cpp
@@ -66,23 +66,24 @@ const F32 PREVIEW_TEXTURE_MIN_ASPECT = 0.005f;
 
 LLPreviewTexture::LLPreviewTexture(const LLSD& key)
     : LLPreview(key),
-      mLoadingFullImage( FALSE ),
-      mShowKeepDiscard(FALSE),
-      mCopyToInv(FALSE),
-      mIsCopyable(FALSE),
-      mIsFullPerm(FALSE),
-      mUpdateDimensions(TRUE),
+      mLoadingFullImage( false ),
+      mSavingMultiple(false),
+      mShowKeepDiscard(false),
+      mCopyToInv(false),
+      mIsCopyable(false),
+      mIsFullPerm(false),
+      mUpdateDimensions(true),
       mLastHeight(0),
       mLastWidth(0),
       mAspectRatio(0.f),
-      mPreviewToSave(FALSE),
+      mPreviewToSave(false),
       mImage(NULL),
       mImageOldBoostLevel(LLGLTexture::BOOST_NONE)
 {
     updateImageID();
     if (key.has("save_as"))
     {
-        mPreviewToSave = TRUE;
+        mPreviewToSave = true;
     }
 }
 
@@ -126,7 +127,7 @@ void LLPreviewTexture::populateRatioList()
 }
 
 // virtual
-BOOL LLPreviewTexture::postBuild()
+bool LLPreviewTexture::postBuild()
 {
     if (mCopyToInv)
     {
@@ -158,7 +159,7 @@ BOOL LLPreviewTexture::postBuild()
             getChild<LLUICtrl>("desc")->setValue(item->getDescription());
             getChild<LLLineEditor>("desc")->setPrevalidate(&LLTextValidate::validateASCIIPrintableNoPipe);
         }
-        BOOL source_library = mObjectUUID.isNull() && gInventory.isObjectDescendentOf(item->getUUID(), gInventory.getLibraryRootFolderID());
+        bool source_library = mObjectUUID.isNull() && gInventory.isObjectDescendentOf(item->getUUID(), gInventory.getLibraryRootFolderID());
         if (source_library)
         {
             getChildView("Discard")->setEnabled(false);
@@ -283,7 +284,7 @@ void LLPreviewTexture::draw()
 
 
 // virtual
-BOOL LLPreviewTexture::canSaveAs() const
+bool LLPreviewTexture::canSaveAs() const
 {
     return mIsFullPerm && !mLoadingFullImage && mImage.notNull() && !mImage->isMissingAsset();
 }
@@ -304,60 +305,44 @@ void LLPreviewTexture::saveTextureToFile(const std::vector<std::string>& filenam
     const LLInventoryItem* item = getItem();
     if (item && mPreviewToSave)
     {
-        mPreviewToSave = FALSE;
+        mPreviewToSave = false;
         LLFloaterReg::showTypedInstance<LLPreviewTexture>("preview_texture", item->getUUID());
     }
 
     // remember the user-approved/edited file name.
     mSaveFileName = filenames[0];
-    mLoadingFullImage = TRUE;
+    mSavingMultiple = false;
+    mLoadingFullImage = true;
     getWindow()->incBusyCount();
 
+    LL_DEBUGS("FileSaveAs") << "Scheduling saving file to " << mSaveFileName << LL_ENDL;
+
     mImage->forceToSaveRawImage(0);//re-fetch the raw image if the old one is removed.
     mImage->setLoadedCallback(LLPreviewTexture::onFileLoadedForSave,
-        0, TRUE, FALSE, new LLUUID(mItemUUID), &mCallbackTextureList);
+        0, true, false, new LLUUID(mItemUUID), &mCallbackTextureList);
 }
 
 
 void LLPreviewTexture::saveMultipleToFile(const std::string& file_name)
 {
     std::string texture_location(gSavedSettings.getString("TextureSaveLocation"));
-    std::string texture_name = file_name.empty() ? getItem()->getName() : file_name;
-
-    std::string filepath;
-    S32 i = 0;
-    S32 err = 0;
-    std::string extension(".png");
-    do
-    {
-        filepath = texture_location;
-        filepath += gDirUtilp->getDirDelimiter();
-        filepath += texture_name;
-
-        if (i != 0)
-        {
-            filepath += llformat("_%.3d", i);
-        }
+    std::string texture_name = LLDir::getScrubbedFileName(file_name.empty() ? getItem()->getName() : file_name);
 
-        filepath += extension;
+    mSaveFileName = texture_location + gDirUtilp->getDirDelimiter() + texture_name + ".png";
 
-        llstat stat_info;
-        err = LLFile::stat( filepath, &stat_info );
-        i++;
-    } while (-1 != err);  // Search until the file is not found (i.e., stat() gives an error).
-
-
-    mSaveFileName = filepath;
-    mLoadingFullImage = TRUE;
+    mSavingMultiple = true;
+    mLoadingFullImage = true;
     getWindow()->incBusyCount();
 
+    LL_DEBUGS("FileSaveAs") << "Scheduling saving file to " << mSaveFileName << LL_ENDL;
+
     mImage->forceToSaveRawImage(0);//re-fetch the raw image if the old one is removed.
     mImage->setLoadedCallback(LLPreviewTexture::onFileLoadedForSave,
-        0, TRUE, FALSE, new LLUUID(mItemUUID), &mCallbackTextureList);
+        0, true, false, new LLUUID(mItemUUID), &mCallbackTextureList);
 }
 
 // virtual
-void LLPreviewTexture::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLPreviewTexture::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLPreview::reshape(width, height, called_from_parent);
 
@@ -412,7 +397,7 @@ void LLPreviewTexture::onFocusReceived()
 
 void LLPreviewTexture::openToSave()
 {
-    mPreviewToSave = TRUE;
+    mPreviewToSave = true;
 }
 
 void LLPreviewTexture::hideCtrlButtons()
@@ -426,12 +411,12 @@ void LLPreviewTexture::hideCtrlButtons()
 }
 
 // static
-void LLPreviewTexture::onFileLoadedForSave(BOOL success,
+void LLPreviewTexture::onFileLoadedForSave(bool success,
                        LLViewerFetchedTexture *src_vi,
                        LLImageRaw* src,
                        LLImageRaw* aux_src,
                        S32 discard_level,
-                       BOOL final,
+                       bool final,
                        void* userdata)
 {
     LLUUID* item_uuid = (LLUUID*) userdata;
@@ -445,14 +430,45 @@ void LLPreviewTexture::onFileLoadedForSave(BOOL success,
         if( self )
         {
             self->getWindow()->decBusyCount();
-            self->mLoadingFullImage = FALSE;
+            self->mLoadingFullImage = false;
         }
     }
 
     if( self && final && success )
     {
+        LL_DEBUGS("FileSaveAs") << "Saving file to " << self->mSaveFileName << LL_ENDL;
         const U32 ext_length = 3;
         std::string extension = self->mSaveFileName.substr( self->mSaveFileName.length() - ext_length);
+
+        std::string filepath;
+        if (self->mSavingMultiple)
+        {
+            std::string part_path = self->mSaveFileName.substr(0, self->mSaveFileName.length() - ext_length - 1);
+
+            S32 i = 0;
+            S32 err = 0;
+            do
+            {
+                filepath = part_path;
+
+                if (i != 0)
+                {
+                    filepath += llformat("_%.3d", i);
+                }
+
+                filepath += ".";
+                filepath += extension;
+
+                llstat stat_info;
+                err = LLFile::stat(filepath, &stat_info);
+                i++;
+            } while (-1 != err);  // Search until the file is not found (i.e., stat() gives an error).
+        }
+        else
+        {
+            filepath = self->mSaveFileName;
+        }
+
         LLStringUtil::toLower(extension);
         // We only support saving in PNG or TGA format
         LLPointer<LLImageFormatted> image;
@@ -468,13 +484,13 @@ void LLPreviewTexture::onFileLoadedForSave(BOOL success,
         if( image && !image->encode( src, 0 ) )
         {
             LLSD args;
-            args["FILE"] = self->mSaveFileName;
+            args["FILE"] = filepath;
             LLNotificationsUtil::add("CannotEncodeFile", args);
         }
-        else if( image && !image->save( self->mSaveFileName ) )
+        else if( image && !image->save(filepath) )
         {
             LLSD args;
-            args["FILE"] = self->mSaveFileName;
+            args["FILE"] = filepath;
             LLNotificationsUtil::add("CannotWriteFile", args);
         }
         else
@@ -482,6 +498,7 @@ void LLPreviewTexture::onFileLoadedForSave(BOOL success,
             self->mSavedFileTimer.reset();
             self->mSavedFileTimer.setTimerExpirySec( SECONDS_TO_SHOW_FILE_SAVED_MSG );
         }
+        LL_DEBUGS("FileSaveAs") << "Done saving file to " << filepath << LL_ENDL;
 
         self->mSaveFileName.clear();
     }
@@ -530,12 +547,12 @@ void LLPreviewTexture::updateDimensions()
     // Reshape the floater only when required
     if (mUpdateDimensions)
     {
-        mUpdateDimensions = FALSE;
+        mUpdateDimensions = false;
 
         //reshape floater
         reshape(getRect().getWidth(), getRect().getHeight());
 
-        gFloaterView->adjustToFitScreen(this, FALSE);
+        gFloaterView->adjustToFitScreen(this, false);
 
         LLRect dim_rect(getChildView("dimensions")->getRect());
         LLRect aspect_label_rect(getChildView("aspect_ratio")->getRect());
@@ -547,7 +564,7 @@ void LLPreviewTexture::updateDimensions()
 // Return true if everything went fine, false if we somewhat modified the ratio as we bumped on border values
 bool LLPreviewTexture::setAspectRatio(const F32 width, const F32 height)
 {
-    mUpdateDimensions = TRUE;
+    mUpdateDimensions = true;
 
     // We don't allow negative width or height. Also, if height is positive but too small, we reset to default
     // A default 0.f value for mAspectRatio means "unconstrained" in the rest of the code
@@ -595,7 +612,7 @@ void LLPreviewTexture::loadAsset()
     mImage->setBoostLevel(LLGLTexture::BOOST_PREVIEW);
     mImage->forceToSaveRawImage(0) ;
     mAssetStatus = PREVIEW_ASSET_LOADING;
-    mUpdateDimensions = TRUE;
+    mUpdateDimensions = true;
     updateDimensions();
     getChildView("save_tex_btn")->setEnabled(canSaveAs());
     if (mObjectUUID.notNull())
@@ -606,7 +623,7 @@ void LLPreviewTexture::loadAsset()
     else
     {
         // check that we can remove item
-        BOOL source_library = gInventory.isObjectDescendentOf(mItemUUID, gInventory.getLibraryRootFolderID());
+        bool source_library = gInventory.isObjectDescendentOf(mItemUUID, gInventory.getLibraryRootFolderID());
         if (source_library)
         {
             getChildView("Discard")->setEnabled(false);
@@ -656,7 +673,7 @@ void LLPreviewTexture::adjustAspectRatio()
                 std::string ratio = std::to_string(num)+":" + std::to_string(denom);
                 mRatiosList.push_back(ratio);
                 combo->add(ratio);
-                combo->setCurrentByIndex(mRatiosList.size()- 1);
+                combo->setCurrentByIndex(static_cast<S32>(mRatiosList.size()) - 1);
             }
             else
             {
@@ -674,7 +691,7 @@ void LLPreviewTexture::adjustAspectRatio()
         }
     }
 
-    mUpdateDimensions = TRUE;
+    mUpdateDimensions = true;
 }
 
 void LLPreviewTexture::updateImageID()
@@ -687,9 +704,9 @@ void LLPreviewTexture::updateImageID()
         // here's the old logic...
         //mShowKeepDiscard = item->getPermissions().getCreator() != gAgent.getID();
         // here's the new logic... 'cos we hate disappearing buttons.
-        mShowKeepDiscard = TRUE;
+        mShowKeepDiscard = true;
 
-        mCopyToInv = FALSE;
+        mCopyToInv = false;
         LLPermissions perm(item->getPermissions());
         mIsCopyable = perm.allowCopyBy(gAgent.getID(), gAgent.getGroupID()) && perm.allowTransferTo(gAgent.getID());
         mIsFullPerm = item->checkPermissionsSet(PERM_ITEM_UNRESTRICTED);
@@ -697,10 +714,10 @@ void LLPreviewTexture::updateImageID()
     else // not an item, assume it's an asset id
     {
         mImageID = mItemUUID;
-        mShowKeepDiscard = FALSE;
-        mCopyToInv = TRUE;
-        mIsCopyable = TRUE;
-        mIsFullPerm = TRUE;
+        mShowKeepDiscard = false;
+        mCopyToInv = true;
+        mIsCopyable = true;
+        mIsFullPerm = true;
     }
 
 }
diff --git a/indra/newview/llpreviewtexture.h b/indra/newview/llpreviewtexture.h
index fda4390993..e55d61ef10 100644
--- a/indra/newview/llpreviewtexture.h
+++ b/indra/newview/llpreviewtexture.h
@@ -43,22 +43,22 @@ public:
 
     virtual void        draw();
 
-    virtual BOOL        canSaveAs() const;
+    virtual bool        canSaveAs() const;
     virtual void        saveAs();
 
     virtual void        loadAsset();
     virtual EAssetStatus    getAssetStatus();
 
-    virtual void        reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    virtual void        reshape(S32 width, S32 height, bool called_from_parent = true);
     virtual void        onFocusReceived();
 
     static void         onFileLoadedForSave(
-                            BOOL success,
+                            bool success,
                             LLViewerFetchedTexture *src_vi,
                             LLImageRaw* src,
                             LLImageRaw* aux_src,
                             S32 discard_level,
-                            BOOL final,
+                            bool final,
                             void* userdata );
     void                openToSave();
 
@@ -73,7 +73,7 @@ public:
 protected:
     void                init();
     void                populateRatioList();
-    /* virtual */ BOOL  postBuild();
+    /* virtual */ bool  postBuild();
     bool                setAspectRatio(const F32 width, const F32 height);
     static void         onAspectRatioCommit(LLUICtrl*,void* userdata);
     void                adjustAspectRatio();
@@ -86,18 +86,19 @@ private:
     S32                 mImageOldBoostLevel;
     std::string         mSaveFileName;
     LLFrameTimer        mSavedFileTimer;
-    BOOL                mLoadingFullImage;
-    BOOL                mShowKeepDiscard;
-    BOOL                mCopyToInv;
+    bool                mSavingMultiple;
+    bool                mLoadingFullImage;
+    bool                mShowKeepDiscard;
+    bool                mCopyToInv;
 
     // Save the image once it's loaded.
-    BOOL                mPreviewToSave;
+    bool                mPreviewToSave;
 
     // This is stored off in a member variable, because the save-as
     // button and drag and drop functionality need to know.
-    BOOL mIsCopyable;
-    BOOL mIsFullPerm;
-    BOOL mUpdateDimensions;
+    bool mIsCopyable;
+    bool mIsFullPerm;
+    bool mUpdateDimensions;
     S32 mLastHeight;
     S32 mLastWidth;
     F32 mAspectRatio;
diff --git a/indra/newview/llprogressview.cpp b/indra/newview/llprogressview.cpp
index ae0face297..9f2d490111 100644
--- a/indra/newview/llprogressview.cpp
+++ b/indra/newview/llprogressview.cpp
@@ -77,7 +77,7 @@ LLProgressView::LLProgressView()
     mFadeFromLoginTimer.stop();
 }
 
-BOOL LLProgressView::postBuild()
+bool LLProgressView::postBuild()
 {
     mProgressBar = getChild<LLProgressBar>("login_progress_bar");
 
@@ -96,12 +96,12 @@ BOOL LLProgressView::postBuild()
     getChild<LLTextBox>("message_text")->setClickedCallback(onClickMessage, this);
 
     // hidden initially, until we need it
-    setVisible(FALSE);
+    setVisible(false);
 
     LLNotifications::instance().getChannel("AlertModal")->connectChanged(boost::bind(&LLProgressView::onAlertModal, this, _1));
 
     sInstance = this;
-    return TRUE;
+    return true;
 }
 
 
@@ -115,24 +115,24 @@ LLProgressView::~LLProgressView()
     sInstance = NULL;
 }
 
-BOOL LLProgressView::handleHover(S32 x, S32 y, MASK mask)
+bool LLProgressView::handleHover(S32 x, S32 y, MASK mask)
 {
     if( childrenHandleHover( x, y, mask ) == NULL )
     {
         gViewerWindow->setCursor(UI_CURSOR_WAIT);
     }
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLProgressView::handleKeyHere(KEY key, MASK mask)
+bool LLProgressView::handleKeyHere(KEY key, MASK mask)
 {
     // Suck up all keystokes except CTRL-Q.
     if( ('Q' == key) && (MASK_CONTROL == mask) )
     {
         LLAppViewer::instance()->userQuit();
     }
-    return TRUE;
+    return true;
 }
 
 void LLProgressView::revealIntroPanel()
@@ -141,20 +141,20 @@ void LLProgressView::revealIntroPanel()
     std::string intro_url = gSavedSettings.getString("PostFirstLoginIntroURL");
     if ( intro_url.length() > 0 &&
             gSavedSettings.getBOOL("BrowserJavascriptEnabled") &&
-            gSavedSettings.getBOOL("PostFirstLoginIntroViewed" ) == FALSE )
+            !gSavedSettings.getBOOL("PostFirstLoginIntroViewed"))
     {
         // hide the progress bar
         getChild<LLView>("stack1")->setVisible(false);
 
         // navigate to intro URL and reveal widget
         mMediaCtrl->navigateTo( intro_url );
-        mMediaCtrl->setVisible( TRUE );
+        mMediaCtrl->setVisible( true );
 
 
         // flag as having seen the new user post login intro
-        gSavedSettings.setBOOL("PostFirstLoginIntroViewed", TRUE );
+        gSavedSettings.setBOOL("PostFirstLoginIntroViewed", true );
 
-        mMediaCtrl->setFocus(TRUE);
+        mMediaCtrl->setFocus(true);
     }
 
     mFadeFromLoginTimer.start();
@@ -173,7 +173,7 @@ void LLProgressView::setStartupComplete()
     }
 }
 
-void LLProgressView::setVisible(BOOL visible)
+void LLProgressView::setVisible(bool visible)
 {
     if (!visible && mFadeFromLoginTimer.getStarted())
     {
@@ -182,14 +182,14 @@ void LLProgressView::setVisible(BOOL visible)
     // hiding progress view
     if (getVisible() && !visible)
     {
-        LLPanel::setVisible(FALSE);
+        LLPanel::setVisible(false);
     }
     // showing progress view
     else if (visible && (!getVisible() || mFadeToWorldTimer.getStarted()))
     {
-        setFocus(TRUE);
+        setFocus(true);
         mFadeToWorldTimer.stop();
-        LLPanel::setVisible(TRUE);
+        LLPanel::setVisible(true);
     }
 }
 
@@ -251,7 +251,7 @@ void LLProgressView::drawLogos(F32 alpha)
                              iter->mDrawRect.getHeight(),
                              iter->mTexturep.get(),
                              UI_VERTEX_COLOR % alpha,
-                             FALSE,
+                             false,
                              iter->mClipRect,
                              iter->mOffsetRect);
     }
@@ -298,7 +298,7 @@ void LLProgressView::draw()
             gFocusMgr.releaseFocusIfNeeded( this );
 
             // turn off panel that hosts intro so we see the world
-            setVisible(FALSE);
+            setVisible(false);
 
             // stop observing events since we no longer care
             mMediaCtrl->remObserver( this );
@@ -368,7 +368,7 @@ void LLProgressView::loadLogo(const std::string &path,
     raw->expandToPowerOfTwo();
 
     TextureData data;
-    data.mTexturep = LLViewerTextureManager::getLocalTexture(raw.get(), FALSE);
+    data.mTexturep = LLViewerTextureManager::getLocalTexture(raw.get(), false);
     data.mDrawRect = pos_rect;
     data.mClipRect = clip_rect;
     data.mOffsetRect = offset_rect;
@@ -401,21 +401,6 @@ void LLProgressView::initLogos()
 
     temp_str += gDirUtilp->getDirDelimiter();
 
-#ifdef LL_FMODSTUDIO
-    // original image size is 264x96, it is on longer side but
-    // with no internal paddings so it gets additional padding
-    icon_width = 77;
-    icon_height = 21;
-    S32 pad_fmod_y = 4;
-    texture_start_x++;
-    loadLogo(temp_str + "fmod_logo.png",
-        image_codec,
-        LLRect(texture_start_x, texture_start_y + pad_fmod_y + icon_height, texture_start_x + icon_width, texture_start_y + pad_fmod_y),
-        default_clip,
-        default_clip);
-
-    texture_start_x += icon_width + default_pad + 1;
-#endif //LL_FMODSTUDIO
 #ifdef LL_HAVOK
     // original image size is 342x113, central element is on a larger side
     // plus internal padding, so it gets slightly more height than desired 32
@@ -506,7 +491,7 @@ void LLProgressView::initStartTexture(S32 location_id, bool is_in_production)
         {
             // HACK: getLocalTexture allows only power of two dimentions
             raw->expandToPowerOfTwo();
-            gStartTexture = LLViewerTextureManager::getLocalTexture(raw.get(), FALSE);
+            gStartTexture = LLViewerTextureManager::getLocalTexture(raw.get(), false);
         }
     }
 
@@ -523,8 +508,8 @@ void LLProgressView::initTextures(S32 location_id, bool is_in_production)
     initStartTexture(location_id, is_in_production);
     initLogos();
 
-    childSetVisible("panel_icons", mLogosList.empty() ? FALSE : TRUE);
-    childSetVisible("panel_top_spacer", mLogosList.empty() ? TRUE : FALSE);
+    childSetVisible("panel_icons", !mLogosList.empty());
+    childSetVisible("panel_top_spacer", mLogosList.empty());
 }
 
 void LLProgressView::releaseTextures()
@@ -532,14 +517,14 @@ void LLProgressView::releaseTextures()
     gStartTexture = NULL;
     mLogosList.clear();
 
-    childSetVisible("panel_top_spacer", TRUE);
-    childSetVisible("panel_icons", FALSE);
+    childSetVisible("panel_top_spacer", true);
+    childSetVisible("panel_icons", false);
 }
 
-void LLProgressView::setCancelButtonVisible(BOOL b, const std::string& label)
+void LLProgressView::setCancelButtonVisible(bool b, const std::string& label)
 {
-    mCancelBtn->setVisible( b );
-    mCancelBtn->setEnabled( b );
+    mCancelBtn->setVisible(b);
+    mCancelBtn->setEnabled(b);
     mCancelBtn->setLabelSelected(label);
     mCancelBtn->setLabelUnselected(label);
 }
@@ -558,8 +543,8 @@ void LLProgressView::onCancelButtonClicked(void*)
     else
     {
         gAgent.teleportCancel();
-        sInstance->mCancelBtn->setEnabled(FALSE);
-        sInstance->setVisible(FALSE);
+        sInstance->mCancelBtn->setEnabled(false);
+        sInstance->setVisible(false);
     }
 }
 
diff --git a/indra/newview/llprogressview.h b/indra/newview/llprogressview.h
index 56756f092a..db3f4a2e32 100644
--- a/indra/newview/llprogressview.h
+++ b/indra/newview/llprogressview.h
@@ -48,15 +48,15 @@ public:
     LLProgressView();
     virtual ~LLProgressView();
 
-    BOOL postBuild();
+    bool postBuild();
 
     /*virtual*/ void draw();
     void drawStartTexture(F32 alpha);
     void drawLogos(F32 alpha);
 
-    /*virtual*/ BOOL handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleKeyHere(KEY key, MASK mask);
-    /*virtual*/ void setVisible(BOOL visible);
+    /*virtual*/ bool handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool handleKeyHere(KEY key, MASK mask);
+    /*virtual*/ void setVisible(bool visible);
 
     // inherited from LLViewerMediaObserver
     /*virtual*/ void handleMediaEvent(LLPluginClassMedia* self, EMediaEvent event);
@@ -76,7 +76,7 @@ public:
     void initTextures(S32 location_id, bool is_in_production);
     void releaseTextures();
 
-    void setCancelButtonVisible(BOOL b, const std::string& label);
+    void setCancelButtonVisible(bool b, const std::string& label);
 
     static void onCancelButtonClicked( void* );
     static void onClickMessage(void*);
diff --git a/indra/newview/llreflectionmap.cpp b/indra/newview/llreflectionmap.cpp
index 2604c2ba53..31fd6f3f07 100644
--- a/indra/newview/llreflectionmap.cpp
+++ b/indra/newview/llreflectionmap.cpp
@@ -56,7 +56,7 @@ void LLReflectionMap::update(U32 resolution, U32 face, bool force_dynamic, F32 n
     llassert(mCubeArray.notNull());
     llassert(mCubeIndex != -1);
     //llassert(LLPipeline::sRenderDeferred);
-    
+
     // make sure we don't walk off the edge of the render target
     while (resolution > gPipeline.mRT->deferredScreen.getWidth() ||
         resolution > gPipeline.mRT->deferredScreen.getHeight())
@@ -65,7 +65,7 @@ void LLReflectionMap::update(U32 resolution, U32 face, bool force_dynamic, F32 n
     }
 
     F32 clip = (near_clip > 0) ? near_clip : getNearClip();
-    
+
     gViewerWindow->cubeSnapshot(LLVector3(mOrigin), mCubeArray, mCubeIndex, face, clip, getIsDynamic() || force_dynamic, useClipPlane, clipPlane);
 }
 
@@ -145,7 +145,7 @@ void LLReflectionMap::autoAdjustOrigin()
             LLVector3 origin(fp);
             F32 height = LLWorld::instance().resolveLandHeightAgent(origin) + 2.f;
             fp[2] = llmax(fp[2], height);
-            
+
             // make sure radius encompasses all objects
             LLSimdScalar r2 = 0.0;
             for (int i = 0; i < 8; ++i)
@@ -165,7 +165,7 @@ void LLReflectionMap::autoAdjustOrigin()
 
             // make sure near clip doesn't poke through ground
             fp[2] = llmax(fp[2], height+mRadius*0.5f);
-            
+
         }
     }
     else if (mViewerObject && !mViewerObject->isDead())
@@ -237,7 +237,7 @@ F32 LLReflectionMap::getNearClip()
 bool LLReflectionMap::getIsDynamic()
 {
     if (gSavedSettings.getS32("RenderReflectionProbeDetail") > (S32) LLReflectionMapManager::DetailLevel::STATIC_ONLY &&
-        mViewerObject && 
+        mViewerObject &&
         mViewerObject->getVolume())
     {
         return ((LLVOVolume*)mViewerObject)->getReflectionProbeIsDynamic();
@@ -247,36 +247,31 @@ bool LLReflectionMap::getIsDynamic()
 }
 
 bool LLReflectionMap::getBox(LLMatrix4& box)
-{ 
+{
     if (mViewerObject)
     {
         LLVolume* volume = mViewerObject->getVolume();
-        if (volume)
+        if (volume && mViewerObject->getReflectionProbeIsBox())
         {
-            LLVOVolume* vobjp = (LLVOVolume*)mViewerObject;
-
-            if (vobjp->getReflectionProbeIsBox())
+            glh::matrix4f mv(gGLModelView);
+            glh::matrix4f scale;
+            LLVector3 s = mViewerObject->getScale().scaledVec(LLVector3(0.5f, 0.5f, 0.5f));
+            mRadius = s.magVec();
+            scale.set_scale(glh::vec3f(s.mV));
+            if (mViewerObject->mDrawable != nullptr)
             {
-                glh::matrix4f mv(gGLModelView);
-                glh::matrix4f scale;
-                LLVector3 s = vobjp->getScale().scaledVec(LLVector3(0.5f, 0.5f, 0.5f));
-                mRadius = s.magVec();
-                scale.set_scale(glh::vec3f(s.mV));
-                if (vobjp->mDrawable != nullptr)
-                {
-                    // object to agent space (no scale)
-                    glh::matrix4f rm((F32*)vobjp->mDrawable->getWorldMatrix().mMatrix);
+                // object to agent space (no scale)
+                glh::matrix4f rm((F32*)mViewerObject->mDrawable->getWorldMatrix().mMatrix);
 
-                    // construct object to camera space (with scale)
-                    mv = mv * rm * scale;
+                // construct object to camera space (with scale)
+                mv = mv * rm * scale;
 
-                    // inverse is camera space to object unit cube 
-                    mv = mv.inverse();
+                // inverse is camera space to object unit cube
+                mv = mv.inverse();
 
-                    box = LLMatrix4(mv.m);
+                box = LLMatrix4(mv.m);
 
-                    return true;
-                }
+                return true;
             }
         }
     }
@@ -337,7 +332,7 @@ void LLReflectionMap::doOcclusion(const LLVector4a& eye)
         mOccluded = false;
         return;
     }
-    
+
     if (mOcclusionQuery == 0)
     { // no query was previously issued, allocate one and issue
         LL_PROFILE_ZONE_NAMED_CATEGORY_PIPELINE("rmdo - glGenQueries");
diff --git a/indra/newview/llreflectionmap.h b/indra/newview/llreflectionmap.h
index 9e888f20d0..117ea4cfa6 100644
--- a/indra/newview/llreflectionmap.h
+++ b/indra/newview/llreflectionmap.h
@@ -36,7 +36,7 @@ class alignas(16) LLReflectionMap : public LLRefCount
 {
     LL_ALIGN_NEW
 public:
-    
+
     enum class ProbeType
     {
         ALL = 0,
@@ -44,8 +44,8 @@ public:
         IRRADIANCE,
         REFLECTION
     };
-    
-    // allocate an environment map of the given resolution 
+
+    // allocate an environment map of the given resolution
     LLReflectionMap();
 
     ~LLReflectionMap();
@@ -86,7 +86,7 @@ public:
 
     // point at which environment map was last generated from (in agent space)
     LLVector4a mOrigin;
-    
+
     // distance from main viewer camera
     F32 mDistance = -1.f;
 
@@ -106,7 +106,7 @@ public:
     // cube map used to sample this environment map
     LLPointer<LLCubeMapArray> mCubeArray;
     S32 mCubeIndex = -1; // index into cube map array or -1 if not currently stored in cube map array
-    
+
     // probe has had at least one full update and is ready to render
     bool mComplete = false;
 
@@ -136,7 +136,7 @@ public:
     GLuint mOcclusionQuery = 0;
     bool mOccluded = false;
     U32 mOcclusionPendingFrames = 0;
-    
+
     ProbeType mType;
 };
 
diff --git a/indra/newview/llreflectionmapmanager.cpp b/indra/newview/llreflectionmapmanager.cpp
index ad5928271c..3130fe3bac 100644
--- a/indra/newview/llreflectionmapmanager.cpp
+++ b/indra/newview/llreflectionmapmanager.cpp
@@ -67,14 +67,14 @@ void load_exr(const std::string& filename)
     const char* err = NULL; // or nullptr in C++11
 
     int ret =  LoadEXRWithLayer(&out, &width, &height, filename.c_str(), /* layername */ nullptr, &err);
-    if (ret == TINYEXR_SUCCESS) 
+    if (ret == TINYEXR_SUCCESS)
     {
         U32 texName = 0;
         LLImageGL::generateTextures(1, &texName);
 
         gEXRImage = new LLImageGL(texName, 4, GL_TEXTURE_2D, GL_RGB16F, GL_RGB16F, GL_FLOAT, LLTexUnit::TAM_CLAMP);
-        gEXRImage->setHasMipMaps(TRUE);
-        gEXRImage->setUseMipMaps(TRUE);
+        gEXRImage->setHasMipMaps(true);
+        gEXRImage->setUseMipMaps(true);
         gEXRImage->setFilteringOption(LLTexUnit::TFO_TRILINEAR);
 
         gGL.getTexUnit(0)->bind(gEXRImage);
@@ -87,12 +87,12 @@ void load_exr(const std::string& filename)
         gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
 
     }
-    else 
+    else
     {
         LLSD notif_args;
         notif_args["WHAT"] = filename;
         notif_args["REASON"] = "Unknown";
-        if (err) 
+        if (err)
         {
             notif_args["REASON"] = std::string(err);
             FreeEXRErrorMessage(err); // release memory of error message.
@@ -119,8 +119,8 @@ void hdri_preview()
         true);
 }
 
-extern BOOL gCubeSnapshot;
-extern BOOL gTeleportDisplay;
+extern bool gCubeSnapshot;
+extern bool gTeleportDisplay;
 
 static U32 sUpdateCount = 0;
 
@@ -231,9 +231,9 @@ void LLReflectionMapManager::update()
     {
         U32 res = mProbeResolution;
         U32 count = log2((F32)res) + 0.5f;
-        
+
         mMipChain.resize(count);
-        for (int i = 0; i < count; ++i)
+        for (U32 i = 0; i < count; ++i)
         {
             mMipChain[i].allocate(res, res, GL_RGB16F);
             res /= 2;
@@ -241,7 +241,7 @@ void LLReflectionMapManager::update()
     }
 
     llassert(mProbes[0] == mDefaultProbe);
-    
+
     LLVector4a camera_pos;
     camera_pos.load3(LLViewerCamera::instance().getOrigin().mV);
 
@@ -256,7 +256,7 @@ void LLReflectionMapManager::update()
     }
 
     mKillList.clear();
-    
+
     // process create list
     for (auto& probe : mCreateList)
     {
@@ -272,12 +272,12 @@ void LLReflectionMapManager::update()
 
 
     bool did_update = false;
-    
+
     static LLCachedControl<S32> sDetail(gSavedSettings, "RenderReflectionProbeDetail", -1);
     static LLCachedControl<S32> sLevel(gSavedSettings, "RenderReflectionProbeLevel", 3);
 
     bool realtime = sDetail >= (S32)LLReflectionMapManager::DetailLevel::REALTIME;
-    
+
     LLReflectionMap* closestDynamic = nullptr;
 
     LLReflectionMap* oldestProbe = nullptr;
@@ -316,7 +316,7 @@ void LLReflectionMapManager::update()
     // next distribute the free indices
     U32 count = llmin(mReflectionProbeCount, (U32)mProbes.size());
 
-    for (S32 i = 1; i < count && !mCubeFree.empty(); ++i)
+    for (U32 i = 1; i < count && !mCubeFree.empty(); ++i)
     {
         // find the closest probe that needs a cube index
         LLReflectionMap* probe = mProbes[i];
@@ -330,7 +330,7 @@ void LLReflectionMapManager::update()
         }
     }
 
-    for (int i = 0; i < mProbes.size(); ++i)
+    for (unsigned int i = 0; i < mProbes.size(); ++i)
     {
         LLReflectionMap* probe = mProbes[i];
         if (probe->getNumRefs() == 1)
@@ -339,7 +339,7 @@ void LLReflectionMapManager::update()
             --i;
             continue;
         }
-        
+
         if (probe != mDefaultProbe &&
             (!probe->isRelevant() || mPaused))
         { // skip irrelevant probes (or all non-default probes if paused)
@@ -442,7 +442,7 @@ void LLReflectionMapManager::update()
     {
         LLReflectionMap* probe = oldestProbe;
         llassert(probe->mCubeIndex != -1);
-        
+
         probe->autoAdjustOrigin();
 
         sUpdateCount++;
@@ -551,17 +551,22 @@ void LLReflectionMapManager::getReflectionMaps(std::vector<LLReflectionMap*>& ma
 
 LLReflectionMap* LLReflectionMapManager::registerSpatialGroup(LLSpatialGroup* group)
 {
-    if (group->getSpatialPartition()->mPartitionType == LLViewerRegion::PARTITION_VOLUME)
+    if (!group)
     {
-        OctreeNode* node = group->getOctreeNode();
-        F32 size = node->getSize().getF32ptr()[0];
-        if (size >= 15.f && size <= 17.f)
-        {
-            return addProbe(group);
-        }
+        return nullptr;
     }
-
-    return nullptr;
+    LLSpatialPartition* part = group->getSpatialPartition();
+    if (!part || part->mPartitionType != LLViewerRegion::PARTITION_VOLUME)
+    {
+        return nullptr;
+    }
+    OctreeNode* node = group->getOctreeNode();
+    F32 size = node->getSize().getF32ptr()[0];
+    if (size < 15.f || size > 17.f)
+    {
+        return nullptr;
+    }
+    return addProbe(group);
 }
 
 LLReflectionMap* LLReflectionMapManager::registerViewerObject(LLViewerObject* vobj)
@@ -631,7 +636,7 @@ void LLReflectionMapManager::doProbeUpdate()
     llassert(mUpdatingProbe != nullptr);
 
     updateProbeFace(mUpdatingProbe, mUpdatingFace);
-    
+
     bool debug_updates = gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_PROBE_UPDATES) && mUpdatingProbe->mViewerObject;
 
     if (++mUpdatingFace == 6)
@@ -684,11 +689,11 @@ void LLReflectionMapManager::updateProbeFace(LLReflectionMap* probe, U32 face)
         touch_default_probe(probe);
 
         gPipeline.pushRenderTypeMask();
-        
+
         //only render sky, water, terrain, and clouds
         gPipeline.andRenderTypeMask(LLPipeline::RENDER_TYPE_SKY, LLPipeline::RENDER_TYPE_WL_SKY,
             LLPipeline::RENDER_TYPE_WATER, LLPipeline::RENDER_TYPE_VOIDWATER, LLPipeline::RENDER_TYPE_CLOUDS, LLPipeline::RENDER_TYPE_TERRAIN, LLPipeline::END_RENDER_TYPES);
-        
+
         probe->update(mRenderTarget.getWidth(), face);
 
         gPipeline.popRenderTypeMask();
@@ -697,7 +702,7 @@ void LLReflectionMapManager::updateProbeFace(LLReflectionMap* probe, U32 face)
     {
         probe->update(mRenderTarget.getWidth(), face);
     }
-    
+
     gPipeline.mRT = &gPipeline.mMainRT;
 
     S32 sourceIdx = mReflectionProbeCount;
@@ -774,15 +779,15 @@ void LLReflectionMapManager::updateProbeFace(LLReflectionMap* probe, U32 face)
                 gGL.getTexUnit(diffuseChannel)->bind(&(mMipChain[i - 1]));
             }
 
-            
+
             gReflectionMipProgram.uniform1f(resScale, 1.f/(mProbeResolution*2));
-            
+
             gPipeline.mScreenTriangleVB->setBuffer();
             gPipeline.mScreenTriangleVB->drawArrays(LLRender::TRIANGLES, 0, 3);
-            
+
             res /= 2;
 
-            S32 mip = i - (mMipChain.size() - mips);
+            GLint mip = i - (static_cast<GLint>(mMipChain.size()) - mips);
 
             if (mip >= 0)
             {
@@ -873,7 +878,7 @@ void LLReflectionMapManager::updateProbeFace(LLReflectionMap* probe, U32 face)
 
             gIrradianceGenProgram.uniform1i(sSourceIdx, sourceIdx);
             gIrradianceGenProgram.uniform1f(LLShaderMgr::REFLECTION_PROBE_MAX_LOD, mMaxProbeLOD);
-            
+
             mVertexBuffer->setBuffer();
             int start_mip = 0;
             // find the mip target to start with based on irradiance map resolution
@@ -952,7 +957,7 @@ void LLReflectionMapManager::updateNeighbors(LLReflectionMap* probe)
     //remove from existing neighbors
     {
         LL_PROFILE_ZONE_NAMED_CATEGORY_DISPLAY("rmmun - clear");
-    
+
         for (auto& other : probe->mNeighbors)
         {
             auto const & iter = std::find(other->mNeighbors.begin(), other->mNeighbors.end(), probe);
@@ -1064,7 +1069,7 @@ void LLReflectionMapManager::updateUniforms()
     bool is_ambiance_pass = gCubeSnapshot && !isRadiancePass();
     F32 ambscale = is_ambiance_pass ? 0.f : 1.f;
     F32 radscale = is_ambiance_pass ? 0.5f : 1.f;
-    
+
     for (auto* refmap : mReflectionMaps)
     {
         if (refmap == nullptr)
@@ -1082,8 +1087,8 @@ void LLReflectionMapManager::updateUniforms()
             //      4. For each bucket, store the index of the nearest probe that might influence pixels in that bucket
             //      5. In the shader, lookup the bucket for the pixel depth to get the index of the first probe that could possibly influence
             //          the current pixel.
-            int depth_min = llclamp(llfloor(refmap->mMinDepth), 0, 255);
-            int depth_max = llclamp(llfloor(refmap->mMaxDepth), 0, 255);
+            unsigned int depth_min = llclamp(llfloor(refmap->mMinDepth), 0, 255);
+            unsigned int depth_max = llclamp(llfloor(refmap->mMaxDepth), 0, 255);
             for (U32 i = depth_min; i <= depth_max; ++i)
             {
                 if (refmap->mMinDepth < minDepth[i])
@@ -1195,7 +1200,7 @@ void LLReflectionMapManager::updateUniforms()
     {
         // fill in gaps in refBucket
         S32 probe_idx = mReflectionProbeCount;
-        
+
         for (int i = 0; i < 256; ++i)
         {
             if (i < count)
@@ -1267,7 +1272,7 @@ void LLReflectionMapManager::setUniforms()
     {
         updateUniforms();
     }
-    glBindBufferBase(GL_UNIFORM_BUFFER, 1, mUBO);
+    glBindBufferBase(GL_UNIFORM_BUFFER, LLGLSLShader::UB_REFLECTION_PROBES, mUBO);
 }
 
 
@@ -1391,7 +1396,7 @@ void LLReflectionMapManager::initReflectionMaps()
             mTexture->allocate(mProbeResolution, 3, mReflectionProbeCount + 2);
 
             mIrradianceMaps = new LLCubeMapArray();
-            mIrradianceMaps->allocate(LL_IRRADIANCE_MAP_RESOLUTION, 3, mReflectionProbeCount, FALSE);
+            mIrradianceMaps->allocate(LL_IRRADIANCE_MAP_RESOLUTION, 3, mReflectionProbeCount, false);
         }
 
         // reset probe state
@@ -1442,9 +1447,9 @@ void LLReflectionMapManager::initReflectionMaps()
         buff->allocateBuffer(4, 0);
 
         LLStrider<LLVector3> v;
-        
+
         buff->getVertexStrider(v);
-        
+
         v[0] = LLVector3(-1, -1, -1);
         v[1] = LLVector3(1, -1, -1);
         v[2] = LLVector3(-1, 1, -1);
@@ -1472,7 +1477,7 @@ void LLReflectionMapManager::cleanup()
 
     mReflectionMaps.clear();
     mUpdatingFace = 0;
-    
+
     mDefaultProbe = nullptr;
     mUpdatingProbe = nullptr;
 
diff --git a/indra/newview/llreflectionmapmanager.h b/indra/newview/llreflectionmapmanager.h
index 5c0651bc24..f81fb30738 100644
--- a/indra/newview/llreflectionmapmanager.h
+++ b/indra/newview/llreflectionmapmanager.h
@@ -67,7 +67,7 @@ public:
 
     // add a probe for the given spatial group
     LLReflectionMap* addProbe(LLSpatialGroup* group = nullptr);
-    
+
     // Populate "maps" with the N most relevant Reflection Maps where N is no more than maps.size()
     // If less than maps.size() ReflectionMaps are available, will assign trailing elements to nullptr.
     //  maps -- presized array of Reflection Map pointers
@@ -160,7 +160,7 @@ private:
 
     // update the specified face of the specified probe
     void updateProbeFace(LLReflectionMap* probe, U32 face);
-    
+
     // list of active reflection maps
     std::vector<LLPointer<LLReflectionMap> > mProbes;
 
diff --git a/indra/newview/llregioninfomodel.cpp b/indra/newview/llregioninfomodel.cpp
index 383ec60543..c15a5559aa 100644
--- a/indra/newview/llregioninfomodel.cpp
+++ b/indra/newview/llregioninfomodel.cpp
@@ -92,8 +92,8 @@ void LLRegionInfoModel::sendRegionTerrain(const LLUUID& invoice) const
     // strings[8] = from estate, float sun_hour
 
     // *NOTE: this resets estate sun info.
-    BOOL estate_global_time = true;
-    BOOL estate_fixed_sun = false;
+    bool estate_global_time = true;
+    bool estate_fixed_sun = false;
     F32 estate_sun_hour = 0.f;
 
     buffer = llformat("%f", mWaterHeight);
diff --git a/indra/newview/llregioninfomodel.h b/indra/newview/llregioninfomodel.h
index e208899372..08608d6fd8 100644
--- a/indra/newview/llregioninfomodel.h
+++ b/indra/newview/llregioninfomodel.h
@@ -70,7 +70,7 @@ public:
     F32         mTerrainLowerLimit;
     F32         mSunHour; // 6..30
 
-    BOOL        mUseEstateSun;
+    bool        mUseEstateSun;
 
     std::string mSimName;
     std::string mSimType;
diff --git a/indra/newview/llsavedsettingsglue.cpp b/indra/newview/llsavedsettingsglue.cpp
deleted file mode 100644
index 4b0132974a..0000000000
--- a/indra/newview/llsavedsettingsglue.cpp
+++ /dev/null
@@ -1,59 +0,0 @@
-/**
- * @file llsavedsettingsglue.cpp
- * @author James Cook
- * @brief LLSavedSettingsGlue class implementation
- *
- * $LicenseInfo:firstyear=2006&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "llviewerprecompiledheaders.h"
-
-#include "llsavedsettingsglue.h"
-
-#include "lluictrl.h"
-
-#include "llviewercontrol.h"
-
-void LLSavedSettingsGlue::setBOOL(LLUICtrl* ctrl, const std::string& name)
-{
-    gSavedSettings.setBOOL(name, ctrl->getValue().asBoolean());
-}
-
-void LLSavedSettingsGlue::setS32(LLUICtrl* ctrl, const std::string& name)
-{
-    gSavedSettings.setS32(name, ctrl->getValue().asInteger());
-}
-
-void LLSavedSettingsGlue::setF32(LLUICtrl* ctrl, const std::string& name)
-{
-    gSavedSettings.setF32(name, (F32)ctrl->getValue().asReal());
-}
-
-void LLSavedSettingsGlue::setU32(LLUICtrl* ctrl, const std::string& name)
-{
-    gSavedSettings.setU32(name, (U32)ctrl->getValue().asInteger());
-}
-
-void LLSavedSettingsGlue::setString(LLUICtrl* ctrl, const std::string& name)
-{
-    gSavedSettings.setString(name, ctrl->getValue().asString());
-}
diff --git a/indra/newview/llscenemonitor.cpp b/indra/newview/llscenemonitor.cpp
index 62c0b6a0a5..cdccaf44e9 100644
--- a/indra/newview/llscenemonitor.cpp
+++ b/indra/newview/llscenemonitor.cpp
@@ -154,7 +154,7 @@ void LLSceneMonitor::generateDitheringTexture(S32 width, S32 height)
         }
     }
 
-    mDitheringTexture = LLViewerTextureManager::getLocalTexture(image_raw.get(), FALSE) ;
+    mDitheringTexture = LLViewerTextureManager::getLocalTexture(image_raw.get(), false) ;
     mDitheringTexture->setAddressMode(LLTexUnit::TAM_WRAP);
     mDitheringTexture->setFilteringOption(LLTexUnit::TFO_POINT);
 
@@ -233,7 +233,7 @@ void LLSceneMonitor::freezeScene()
     }
 
     // freeze everything else
-    gSavedSettings.setBOOL("FreezeTime", TRUE);
+    gSavedSettings.setBOOL("FreezeTime", true);
 
     //disable sky, water and clouds
     gPipeline.clearRenderTypeMask(LLPipeline::RENDER_TYPE_SKY, LLPipeline::RENDER_TYPE_WL_SKY,
@@ -254,7 +254,7 @@ void LLSceneMonitor::unfreezeScene()
     }
 
     // thaw everything else
-    gSavedSettings.setBOOL("FreezeTime", FALSE);
+    gSavedSettings.setBOOL("FreezeTime", false);
 
     //enable sky, water and clouds
     gPipeline.setRenderTypeMask(LLPipeline::RENDER_TYPE_SKY, LLPipeline::RENDER_TYPE_WL_SKY,
@@ -527,7 +527,7 @@ void LLSceneMonitor::dumpToFile(const std::string &file_name)
         os << std::setprecision(10);
 
         LLTrace::PeriodicRecording& scene_load_recording = mSceneLoadRecording.getResults();
-        const U32 frame_count = scene_load_recording.getNumRecordedPeriods();
+        const auto frame_count = scene_load_recording.getNumRecordedPeriods();
 
         F64Seconds frame_time;
 
@@ -673,7 +673,7 @@ LLSceneMonitorView::LLSceneMonitorView(const LLRect& rect)
     :   LLFloater(LLSD())
 {
     setRect(rect);
-    setVisible(FALSE);
+    setVisible(false);
 
     setCanMinimize(false);
     setCanClose(true);
@@ -704,7 +704,7 @@ void LLSceneMonitorView::onTeleportFinished()
     }
 }
 
-void LLSceneMonitorView::onVisibilityChange(BOOL visible)
+void LLSceneMonitorView::onVisibilityChange(bool visible)
 {
     LLSceneMonitor::getInstance()->setDebugViewerVisible(visible);
 }
diff --git a/indra/newview/llscenemonitor.h b/indra/newview/llscenemonitor.h
index ac79543bb9..24260d8970 100644
--- a/indra/newview/llscenemonitor.h
+++ b/indra/newview/llscenemonitor.h
@@ -114,7 +114,7 @@ public:
     ~LLSceneMonitorView();
     virtual void draw();
 
-    virtual void onVisibilityChange(BOOL visible);
+    virtual void onVisibilityChange(bool visible);
 
 protected:
     virtual void onClose(bool app_quitting=false);
diff --git a/indra/newview/llsceneview.cpp b/indra/newview/llsceneview.cpp
index 33af529589..a61474636a 100644
--- a/indra/newview/llsceneview.cpp
+++ b/indra/newview/llsceneview.cpp
@@ -46,7 +46,7 @@ LLSceneView::LLSceneView(const LLRect& rect)
     :   LLFloater(LLSD())
 {
     setRect(rect);
-    setVisible(FALSE);
+    setVisible(false);
 
     setCanMinimize(false);
     setCanClose(true);
@@ -102,7 +102,7 @@ void LLSceneView::draw()
     LLViewerRegion* region = gAgent.getRegion();
     if (region)
     {
-        for (U32 i = 0; i < gObjectList.getNumObjects(); ++i)
+        for (S32 i = 0; i < gObjectList.getNumObjects(); ++i)
         {
             LLViewerObject* object = gObjectList.getObject(i);
 
@@ -194,13 +194,13 @@ void LLSceneView::draw()
 
             F32 size_range = size_domain[1]-size_domain[0];
 
-            U32 count = size[idx].size();
+            auto count = size[idx].size();
 
             F32 total = 0.f;
 
             gGL.begin(LLRender::LINE_STRIP);
 
-            for (U32 i = 0; i < count; ++i)
+            for (size_t i = 0; i < count; ++i)
             {
                 F32 rad = size[idx][i];
                 total += rad;
@@ -260,11 +260,11 @@ void LLSceneView::draw()
 
             U32 triangle_range = tri_domain[1]-tri_domain[0];
 
-            U32 count = triangles[idx].size();
+            auto count = triangles[idx].size();
 
             gGL.begin(LLRender::LINE_STRIP);
             //plot triangles
-            for (U32 i = 0; i < count; ++i)
+            for (size_t i = 0; i < count; ++i)
             {
                 U32 tri_count = triangles[idx][i];
                 F32 y = (F32) (tri_count-tri_domain[0])/triangle_range*tri_rect.getHeight()+tri_rect.mBottom;
@@ -325,13 +325,13 @@ void LLSceneView::draw()
 
             F32 cost_range = streaming_domain[1]-streaming_domain[0];
 
-            U32 count = streaming_cost[idx].size();
+            auto count = streaming_cost[idx].size();
 
             F32 total = 0;
 
             gGL.begin(LLRender::LINE_STRIP);
             //plot triangles
-            for (U32 i = 0; i < count; ++i)
+            for (size_t i = 0; i < count; ++i)
             {
                 F32 sc = streaming_cost[idx][i];
                 total += sc;
@@ -391,13 +391,13 @@ void LLSceneView::draw()
 
             F32 cost_range = physics_domain[1]-physics_domain[0];
 
-            U32 count = physics_cost[idx].size();
+            auto count = physics_cost[idx].size();
 
             F32 total = 0;
 
             gGL.begin(LLRender::LINE_STRIP);
             //plot triangles
-            for (U32 i = 0; i < count; ++i)
+            for (size_t i = 0; i < count; ++i)
             {
                 F32 pc = physics_cost[idx][i];
                 total += pc;
diff --git a/indra/newview/llscreenchannel.cpp b/indra/newview/llscreenchannel.cpp
index 07b86a8f6e..89ec2bf72e 100644
--- a/indra/newview/llscreenchannel.cpp
+++ b/indra/newview/llscreenchannel.cpp
@@ -96,10 +96,10 @@ LLScreenChannelBase::LLScreenChannelBase(const Params& p)
     mID = p.id;
 
     setMouseOpaque( false );
-    setVisible(FALSE);
+    setVisible(false);
 }
 
-BOOL LLScreenChannelBase::postBuild()
+bool LLScreenChannelBase::postBuild()
 {
     if (mFloaterSnapRegion == NULL)
     {
@@ -111,10 +111,10 @@ BOOL LLScreenChannelBase::postBuild()
         mChicletRegion = gViewerWindow->getRootView()->getChildView("chiclet_container");
     }
 
-    return TRUE;
+    return true;
 }
 
-void LLScreenChannelBase::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLScreenChannelBase::reshape(S32 width, S32 height, bool called_from_parent)
 {
     if (mChannelAlignment == CA_CENTRE)
     {
@@ -165,7 +165,7 @@ void LLScreenChannelBase::init(S32 channel_left, S32 channel_right)
     // top and bottom set by updateRect()
     setRect(LLRect(channel_left, 0, channel_right, 0));
     updateRect();
-    setVisible(TRUE);
+    setVisible(true);
 }
 
 void    LLScreenChannelBase::updateRect()
@@ -691,7 +691,7 @@ void LLScreenChannel::showToastsBottom()
         {
             // HACK
             // EXT-2653: it is necessary to prevent overlapping for secondary showed toasts
-            toast->setVisible(TRUE);
+            toast->setVisible(true);
         }
         if(!toast->hasFocus())
         {
@@ -744,7 +744,7 @@ void LLScreenChannel::showToastsCentre()
         toast_rect.setLeftTopAndSize(getRect().mLeft - toast_rect.getWidth() / 2, bottom + toast_rect.getHeight() / 2 + gSavedSettings.getS32("ToastGap"), toast_rect.getWidth() ,toast_rect.getHeight());
         toast->setRect(toast_rect);
 
-        toast->setVisible(TRUE);
+        toast->setVisible(true);
     }
 }
 
@@ -838,7 +838,7 @@ void LLScreenChannel::showToastsTop()
         {
             // HACK
             // EXT-2653: it is necessary to prevent overlapping for secondary showed toasts
-            toast->setVisible(TRUE);
+            toast->setVisible(true);
         }
         if (!toast->hasFocus())
         {
@@ -898,7 +898,7 @@ void LLScreenChannel::createStartUpToast(S32 notif_num, F32 timer)
     mStartUpToastPanel->reshape(getRect().getWidth(), toast_rect.getHeight(), true);
 
     text_box->setValue(text);
-    text_box->setVisible(TRUE);
+    text_box->setVisible(true);
 
     text_box->reshapeToFitText();
     text_box->setOrigin(text_box->getRect().mLeft, (wrapper_panel->getRect().getHeight() - text_box->getRect().getHeight())/2);
@@ -908,7 +908,7 @@ void LLScreenChannel::createStartUpToast(S32 notif_num, F32 timer)
 
     addChild(mStartUpToastPanel);
 
-    mStartUpToastPanel->setVisible(TRUE);
+    mStartUpToastPanel->setVisible(true);
 }
 
 // static --------------------------------------------------------------------------
@@ -943,7 +943,7 @@ void LLScreenChannel::closeStartUpToast()
 {
     if(mStartUpToastPanel != NULL)
     {
-        mStartUpToastPanel->setVisible(FALSE);
+        mStartUpToastPanel->setVisible(false);
         mStartUpToastPanel = NULL;
     }
 }
@@ -975,7 +975,7 @@ void LLScreenChannel::hideToastsFromScreen()
         LLToast* toast = it->getToast();
         if (toast)
         {
-            toast->setVisible(FALSE);
+            toast->setVisible(false);
         }
         else
         {
diff --git a/indra/newview/llscreenchannel.h b/indra/newview/llscreenchannel.h
index 748d4b507e..22fb41e559 100644
--- a/indra/newview/llscreenchannel.h
+++ b/indra/newview/llscreenchannel.h
@@ -76,9 +76,9 @@ public:
 
     LLScreenChannelBase(const Params&);
 
-    BOOL postBuild();
+    bool postBuild();
 
-    void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    void reshape(S32 width, S32 height, bool called_from_parent = true);
 
     // Channel's outfit-functions
     // update channel's size and position in the World View
diff --git a/indra/newview/llscripteditor.cpp b/indra/newview/llscripteditor.cpp
index e03f6302e6..6eb8cf0b37 100644
--- a/indra/newview/llscripteditor.cpp
+++ b/indra/newview/llscripteditor.cpp
@@ -54,7 +54,7 @@ LLScriptEditor::LLScriptEditor(const Params& p)
     }
 }
 
-BOOL LLScriptEditor::postBuild()
+bool LLScriptEditor::postBuild()
 {
     gSavedSettings.getControl("LSLFontSizeName")->getCommitSignal()->connect(boost::bind(&LLScriptEditor::onFontSizeChange, this));
     return LLTextEditor::postBuild();
@@ -120,7 +120,7 @@ void LLScriptEditor::drawLineNumbers()
             if(line.mLineNum != last_line_num && line.mRect.mTop <= scrolled_view_rect.mTop)
             {
                 const LLWString ltext = utf8str_to_wstring(llformat("%d", line.mLineNum ));
-                BOOL is_cur_line = cursor_line == line.mLineNum;
+                bool is_cur_line = cursor_line == line.mLineNum;
                 const U8 style = is_cur_line ? LLFontGL::BOLD : LLFontGL::NORMAL;
                 const LLColor4 fg_color = is_cur_line ? mCursorColor : mReadOnlyFgColor;
                 getScriptFont()->render(
diff --git a/indra/newview/llscripteditor.h b/indra/newview/llscripteditor.h
index 19caa277d9..1632ebe834 100644
--- a/indra/newview/llscripteditor.h
+++ b/indra/newview/llscripteditor.h
@@ -45,7 +45,7 @@ public:
 
     // LLView override
     virtual void    draw();
-    BOOL postBuild();
+    bool postBuild();
 
     void    initKeywords();
     void    loadKeywords();
diff --git a/indra/newview/llscriptfloater.cpp b/indra/newview/llscriptfloater.cpp
index 577d7625c7..22a9dd0027 100644
--- a/indra/newview/llscriptfloater.cpp
+++ b/indra/newview/llscriptfloater.cpp
@@ -87,8 +87,8 @@ bool LLScriptFloater::toggle(const LLUUID& notification_id)
         }
         else
         {
-            floater->setVisible(TRUE);
-            floater->setFocus(FALSE);
+            floater->setVisible(true);
+            floater->setFocus(false);
         }
     }
     // create and show new floater
@@ -113,7 +113,7 @@ LLScriptFloater* LLScriptFloater::show(const LLUUID& notification_id)
     floater->createForm(notification_id);
 
     //LLDialog(LLGiveInventory and LLLoadURL) should no longer steal focus (see EXT-5445)
-    floater->setAutoFocus(FALSE);
+    floater->setAutoFocus(false);
 
     if(LLScriptFloaterManager::OBJ_SCRIPT == LLScriptFloaterManager::getObjectType(notification_id))
     {
@@ -126,7 +126,7 @@ LLScriptFloater* LLScriptFloater::show(const LLUUID& notification_id)
     }
 
     //LLDialog(LLGiveInventory and LLLoadURL) should no longer steal focus (see EXT-5445)
-    LLFloaterReg::showTypedInstance<LLScriptFloater>("script_floater", notification_id, FALSE);
+    LLFloaterReg::showTypedInstance<LLScriptFloater>("script_floater", notification_id, false);
 
     return floater;
 }
@@ -205,7 +205,7 @@ void LLScriptFloater::setDocked(bool docked, bool pop_on_undock /* = true */)
     hideToastsIfNeeded();
 }
 
-void LLScriptFloater::setVisible(BOOL visible)
+void LLScriptFloater::setVisible(bool visible)
 {
     LLDockableFloater::setVisible(visible);
 
diff --git a/indra/newview/llscriptfloater.h b/indra/newview/llscriptfloater.h
index cf413af2cb..8f3b8e99f6 100644
--- a/indra/newview/llscriptfloater.h
+++ b/indra/newview/llscriptfloater.h
@@ -185,7 +185,7 @@ public:
     /**
      * Hide all notification toasts when we show dockable floater
      */
-    /*virtual*/ void setVisible(BOOL visible);
+    /*virtual*/ void setVisible(bool visible);
 
     bool getSavePosition() { return mSaveFloaterPosition; }
 
diff --git a/indra/newview/llscrollingpanelparam.cpp b/indra/newview/llscrollingpanelparam.cpp
index 4c8666bdde..8dfe21e4cb 100644
--- a/indra/newview/llscrollingpanelparam.cpp
+++ b/indra/newview/llscrollingpanelparam.cpp
@@ -50,56 +50,51 @@ const S32 LLScrollingPanelParam::PARAM_HINT_HEIGHT = 128;
 S32 LLScrollingPanelParam::sUpdateDelayFrames = 0;
 
 LLScrollingPanelParam::LLScrollingPanelParam( const LLPanel::Params& panel_params,
-                          LLViewerJointMesh* mesh, LLViewerVisualParam* param, BOOL allow_modify, LLWearable* wearable, LLJoint* jointp, BOOL use_hints )
+                          LLViewerJointMesh* mesh, LLViewerVisualParam* param, bool allow_modify, LLWearable* wearable, LLJoint* jointp, bool use_hints )
     : LLScrollingPanelParamBase( panel_params, mesh, param, allow_modify, wearable, jointp, use_hints)
 {
-    // *HACK To avoid hard coding texture position, lets use border's position for texture.
-    LLViewBorder* left_border = getChild<LLViewBorder>("left_border");
+    mLessBtn = getChild<LLButton>("less");
+    mMoreBtn = getChild<LLButton>("more");
+    mLeftBorder = getChild<LLViewBorder>("left_border");
+    mRightBorder = getChild<LLViewBorder>("right_border");
+    mMinParamText = getChild<LLUICtrl>("min param text");
+    mMaxParamText = getChild<LLUICtrl>("max param text");
 
+    // *HACK To avoid hard coding texture position, lets use border's position for texture.
     static LLUICachedControl<S32> slider_ctrl_height ("UISliderctrlHeight", 0);
-    S32 pos_x = left_border->getRect().mLeft + left_border->getBorderWidth();
-    S32 pos_y = left_border->getRect().mBottom + left_border->getBorderWidth();
+    S32 pos_x = mLeftBorder->getRect().mLeft + mLeftBorder->getBorderWidth();
+    S32 pos_y = mLeftBorder->getRect().mBottom + mLeftBorder->getBorderWidth();
     F32 min_weight = param->getMinWeight();
     F32 max_weight = param->getMaxWeight();
 
     mHintMin = new LLVisualParamHint( pos_x, pos_y, PARAM_HINT_WIDTH, PARAM_HINT_HEIGHT, mesh, (LLViewerVisualParam*) wearable->getVisualParam(param->getID()), wearable,  min_weight, jointp);
-    pos_x = getChild<LLViewBorder>("right_border")->getRect().mLeft + left_border->getBorderWidth();
+    pos_x = mRightBorder->getRect().mLeft + mLeftBorder->getBorderWidth();
     mHintMax = new LLVisualParamHint( pos_x, pos_y, PARAM_HINT_WIDTH, PARAM_HINT_HEIGHT, mesh, (LLViewerVisualParam*) wearable->getVisualParam(param->getID()), wearable, max_weight, jointp );
 
-    mHintMin->setAllowsUpdates( FALSE );
-    mHintMax->setAllowsUpdates( FALSE );
+    mHintMin->setAllowsUpdates( false );
+    mHintMax->setAllowsUpdates( false );
 
-    std::string min_name = LLTrans::getString(param->getMinDisplayName());
-    std::string max_name = LLTrans::getString(param->getMaxDisplayName());
-    getChild<LLUICtrl>("min param text")->setValue(min_name);
-    getChild<LLUICtrl>("max param text")->setValue(max_name);
+    mMinParamText->setValue(LLTrans::getString(param->getMinDisplayName()));
+    mMaxParamText->setValue(LLTrans::getString(param->getMaxDisplayName()));
 
-    LLButton* less = getChild<LLButton>("less");
-    if (less)
-    {
-        less->setMouseDownCallback( LLScrollingPanelParam::onHintMinMouseDown, this );
-        less->setMouseUpCallback( LLScrollingPanelParam::onHintMinMouseUp, this );
-        less->setHeldDownCallback( LLScrollingPanelParam::onHintMinHeldDown, this );
-        less->setHeldDownDelay( PARAM_STEP_TIME_THRESHOLD );
-    }
+    mLessBtn->setMouseDownCallback(LLScrollingPanelParam::onHintMinMouseDown, this);
+    mLessBtn->setMouseUpCallback(LLScrollingPanelParam::onHintMinMouseUp, this);
+    mLessBtn->setHeldDownCallback(LLScrollingPanelParam::onHintMinHeldDown, this);
+    mLessBtn->setHeldDownDelay(PARAM_STEP_TIME_THRESHOLD);
 
-    LLButton* more = getChild<LLButton>("more");
-    if (more)
-    {
-        more->setMouseDownCallback( LLScrollingPanelParam::onHintMaxMouseDown, this );
-        more->setMouseUpCallback( LLScrollingPanelParam::onHintMaxMouseUp, this );
-        more->setHeldDownCallback( LLScrollingPanelParam::onHintMaxHeldDown, this );
-        more->setHeldDownDelay( PARAM_STEP_TIME_THRESHOLD );
-    }
+    mMoreBtn->setMouseDownCallback(LLScrollingPanelParam::onHintMaxMouseDown, this);
+    mMoreBtn->setMouseUpCallback(LLScrollingPanelParam::onHintMaxMouseUp, this);
+    mMoreBtn->setHeldDownCallback(LLScrollingPanelParam::onHintMaxHeldDown, this);
+    mMoreBtn->setHeldDownDelay(PARAM_STEP_TIME_THRESHOLD);
 
-    setVisible(FALSE);
-    setBorderVisible( FALSE );
+    setVisible(false);
+    setBorderVisible( false );
 }
 
 LLScrollingPanelParam::~LLScrollingPanelParam()
 {
 }
-void LLScrollingPanelParam::updatePanel(BOOL allow_modify)
+void LLScrollingPanelParam::updatePanel(bool allow_modify)
 {
     if (!mWearable)
     {
@@ -110,11 +105,11 @@ void LLScrollingPanelParam::updatePanel(BOOL allow_modify)
 
     mHintMin->requestUpdate( sUpdateDelayFrames++ );
     mHintMax->requestUpdate( sUpdateDelayFrames++ );
-    getChildView("less")->setEnabled(mAllowModify);
-    getChildView("more")->setEnabled(mAllowModify);
+    mLessBtn->setEnabled(mAllowModify);
+    mMoreBtn->setEnabled(mAllowModify);
 }
 
-void LLScrollingPanelParam::setVisible( BOOL visible )
+void LLScrollingPanelParam::setVisible( bool visible )
 {
     if( getVisible() != visible )
     {
@@ -141,16 +136,16 @@ void LLScrollingPanelParam::draw()
         return;
     }
 
-    getChildView("less")->setVisible( mHintMin->getVisible());
-    getChildView("more")->setVisible( mHintMax->getVisible());
+    mLessBtn->setVisible( mHintMin->getVisible());
+    mMoreBtn->setVisible( mHintMax->getVisible());
 
     // hide borders if texture has been loaded
-    getChildView("left_border")->setVisible( !mHintMin->getVisible());
-    getChildView("right_border")->setVisible( !mHintMax->getVisible());
+    mLeftBorder->setVisible( !mHintMin->getVisible());
+    mRightBorder->setVisible( !mHintMax->getVisible());
 
     // Draw all the children except for the labels
-    getChildView("min param text")->setVisible( FALSE );
-    getChildView("max param text")->setVisible( FALSE );
+    mMinParamText->setVisible( false );
+    mMaxParamText->setVisible( false );
     LLPanel::draw();
 
     // If we're in a focused floater, don't apply the floater's alpha to visual param hint,
@@ -176,11 +171,11 @@ void LLScrollingPanelParam::draw()
 
 
     // Draw labels on top of the buttons
-    getChildView("min param text")->setVisible( TRUE );
-    drawChild(getChild<LLView>("min param text"));
+    mMinParamText->setVisible( true );
+    drawChild(mMinParamText);
 
-    getChildView("max param text")->setVisible( TRUE );
-    drawChild(getChild<LLView>("max param text"));
+    mMaxParamText->setVisible( true );
+    drawChild(mMaxParamText);
 }
 
 // static
diff --git a/indra/newview/llscrollingpanelparam.h b/indra/newview/llscrollingpanelparam.h
index e4f3f398fe..3aba4e4e40 100644
--- a/indra/newview/llscrollingpanelparam.h
+++ b/indra/newview/llscrollingpanelparam.h
@@ -30,6 +30,8 @@
 
 #include "llscrollingpanelparambase.h"
 
+class LLBorder;
+class LLButton;
 class LLViewerJointMesh;
 class LLViewerVisualParam;
 class LLWearable;
@@ -41,12 +43,12 @@ class LLScrollingPanelParam : public LLScrollingPanelParamBase
 {
 public:
     LLScrollingPanelParam( const LLPanel::Params& panel_params,
-                   LLViewerJointMesh* mesh, LLViewerVisualParam* param, BOOL allow_modify, LLWearable* wearable, LLJoint* jointp, BOOL use_hints = TRUE );
+                   LLViewerJointMesh* mesh, LLViewerVisualParam* param, bool allow_modify, LLWearable* wearable, LLJoint* jointp, bool use_hints = true );
     virtual ~LLScrollingPanelParam();
 
-    virtual void        draw();
-    virtual void        setVisible( BOOL visible );
-    virtual void        updatePanel(BOOL allow_modify);
+    void                draw() override;
+    void                setVisible(bool visible) override;
+    void                updatePanel(bool allow_modify) override;
 
     static void         onSliderMouseDown(LLUICtrl* ctrl, void* userdata);
     static void         onSliderMouseUp(LLUICtrl* ctrl, void* userdata);
@@ -79,7 +81,14 @@ public:
 protected:
     LLTimer             mMouseDownTimer;    // timer for how long mouse has been held down on a hint.
     F32                 mLastHeldTime;
-    BOOL mAllowModify;
+    bool mAllowModify;
+
+    LLButton* mLessBtn;
+    LLButton* mMoreBtn;
+    LLViewBorder* mLeftBorder;
+    LLViewBorder* mRightBorder;
+    LLUICtrl* mMinParamText;
+    LLUICtrl* mMaxParamText;
 };
 
 #endif
diff --git a/indra/newview/llscrollingpanelparambase.cpp b/indra/newview/llscrollingpanelparambase.cpp
index 13651880dd..247639aa48 100644
--- a/indra/newview/llscrollingpanelparambase.cpp
+++ b/indra/newview/llscrollingpanelparambase.cpp
@@ -40,7 +40,7 @@
 #include "llvoavatarself.h"
 
 LLScrollingPanelParamBase::LLScrollingPanelParamBase( const LLPanel::Params& panel_params,
-                              LLViewerJointMesh* mesh, LLViewerVisualParam* param, BOOL allow_modify, LLWearable* wearable, LLJoint* jointp, BOOL use_hints)
+                              LLViewerJointMesh* mesh, LLViewerVisualParam* param, bool allow_modify, LLWearable* wearable, LLJoint* jointp, bool use_hints)
     : LLScrollingPanel( panel_params ),
       mParam(param),
       mAllowModify(allow_modify),
@@ -58,15 +58,15 @@ LLScrollingPanelParamBase::LLScrollingPanelParamBase( const LLPanel::Params& pan
     getChildView("param slider")->setEnabled(mAllowModify);
     childSetCommitCallback("param slider", LLScrollingPanelParamBase::onSliderMoved, this);
 
-    setVisible(FALSE);
-    setBorderVisible( FALSE );
+    setVisible(false);
+    setBorderVisible( false );
 }
 
 LLScrollingPanelParamBase::~LLScrollingPanelParamBase()
 {
 }
 
-void LLScrollingPanelParamBase::updatePanel(BOOL allow_modify)
+void LLScrollingPanelParamBase::updatePanel(bool allow_modify)
 {
     LLViewerVisualParam* param = mParam;
 
diff --git a/indra/newview/llscrollingpanelparambase.h b/indra/newview/llscrollingpanelparambase.h
index 74682bb71c..9deafcc81a 100644
--- a/indra/newview/llscrollingpanelparambase.h
+++ b/indra/newview/llscrollingpanelparambase.h
@@ -42,10 +42,10 @@ class LLScrollingPanelParamBase : public LLScrollingPanel
 {
 public:
     LLScrollingPanelParamBase( const LLPanel::Params& panel_params,
-                   LLViewerJointMesh* mesh, LLViewerVisualParam* param, BOOL allow_modify, LLWearable* wearable, LLJoint* jointp, BOOL use_hints = FALSE );
+                   LLViewerJointMesh* mesh, LLViewerVisualParam* param, bool allow_modify, LLWearable* wearable, LLJoint* jointp, bool use_hints = false );
     virtual ~LLScrollingPanelParamBase();
 
-    virtual void        updatePanel(BOOL allow_modify);
+    void                updatePanel(bool allow_modify) override;
 
     static void         onSliderMoved(LLUICtrl* ctrl, void* userdata);
 
@@ -55,7 +55,7 @@ public:
 public:
     LLViewerVisualParam* mParam;
 protected:
-    BOOL mAllowModify;
+    bool mAllowModify;
     LLWearable *mWearable;
 };
 
diff --git a/indra/newview/llsearchableui.cpp b/indra/newview/llsearchableui.cpp
index 0a3cb803d2..c20f5d4230 100644
--- a/indra/newview/llsearchableui.cpp
+++ b/indra/newview/llsearchableui.cpp
@@ -134,7 +134,7 @@ void ll::statusbar::SearchableItem::setNotHighlighted( )
 
         if (mWasHiddenBySearch)
         {
-            mMenu->setVisible(TRUE);
+            mMenu->setVisible(true);
             mWasHiddenBySearch = false;
         }
     }
@@ -169,7 +169,7 @@ bool ll::statusbar::SearchableItem::hightlightAndHide(LLWString const &aFilter,
     if (mCtrl && !bVisible && !bHighlighted)
     {
         mWasHiddenBySearch = true;
-        mMenu->setVisible(FALSE);
+        mMenu->setVisible(false);
     }
     return bVisible || bHighlighted;
 }
diff --git a/indra/newview/llsearchcombobox.cpp b/indra/newview/llsearchcombobox.cpp
index 5cab2e6f70..10d9ef81eb 100644
--- a/indra/newview/llsearchcombobox.cpp
+++ b/indra/newview/llsearchcombobox.cpp
@@ -71,7 +71,7 @@ LLSearchComboBox::LLSearchComboBox(const Params&p)
     button_params.click_callback.function(boost::bind(&LLSearchComboBox::onSelectionCommit, this));
     mSearchButton = LLUICtrlFactory::create<LLButton>(button_params);
     mTextEntry->addChild(mSearchButton);
-    mTextEntry->setPassDelete(TRUE);
+    mTextEntry->setPassDelete(true);
 
     setButtonVisible(p.dropdown_button_visible);
     mTextEntry->setCommitCallback(boost::bind(&LLComboBox::onTextCommit, this, _2));
@@ -124,7 +124,7 @@ void LLSearchComboBox::onTextEntry(LLLineEditor* line_editor)
 
 void LLSearchComboBox::focusTextEntry()
 {
-    // We can't use "mTextEntry->setFocus(TRUE)" instead because
+    // We can't use "mTextEntry->setFocus(true)" instead because
     // if the "select_on_focus" parameter is true it places the cursor
     // at the beginning (after selecting text), thus screwing up updateSelection().
     if (mTextEntry)
@@ -164,9 +164,9 @@ void LLSearchComboBox::onSelectionCommit()
     setControlValue(search_query);
 }
 
-BOOL LLSearchComboBox::remove(const std::string& name)
+bool LLSearchComboBox::remove(const std::string& name)
 {
-    BOOL found = mList->selectItemByLabel(name, FALSE);
+    bool found = mList->selectItemByLabel(name, false);
 
     if (found)
     {
@@ -186,7 +186,7 @@ void LLSearchComboBox::clearHistory()
     setTextEntry(LLStringUtil::null);
 }
 
-BOOL LLSearchComboBox::handleKeyHere(KEY key,MASK mask )
+bool LLSearchComboBox::handleKeyHere(KEY key,MASK mask )
 {
     if(mTextEntry->hasFocus() && MASK_NONE == mask && KEY_DOWN == key)
     {
diff --git a/indra/newview/llsearchcombobox.h b/indra/newview/llsearchcombobox.h
index 891237e92e..17787ca5e6 100644
--- a/indra/newview/llsearchcombobox.h
+++ b/indra/newview/llsearchcombobox.h
@@ -50,14 +50,14 @@ public:
     /**
      * Removes an entry from combo box, case insensitive
      */
-    BOOL remove(const std::string& name);
+    bool remove(const std::string& name);
 
     /**
      * Clears search history
      */
     void clearHistory();
 
-    /*virtual*/ BOOL handleKeyHere(KEY key, MASK mask);
+    /*virtual*/ bool handleKeyHere(KEY key, MASK mask);
 
     ~LLSearchComboBox();
 
diff --git a/indra/newview/llsechandler_basic.cpp b/indra/newview/llsechandler_basic.cpp
index da7eff7f54..2d8a5eaf13 100644
--- a/indra/newview/llsechandler_basic.cpp
+++ b/indra/newview/llsechandler_basic.cpp
@@ -75,7 +75,7 @@ LLBasicCertificate::LLBasicCertificate(const std::string& pem_cert,
 {
     // BIO_new_mem_buf returns a read only bio, but takes a void* which isn't const
     // so we need to cast it.
-    BIO * pem_bio = BIO_new_mem_buf((void*)pem_cert.c_str(), pem_cert.length());
+    BIO * pem_bio = BIO_new_mem_buf((void*)pem_cert.c_str(), static_cast<int>(pem_cert.length()));
     if(pem_bio == NULL)
     {
         LL_WARNS("SECAPI") << "Could not allocate an openssl memory BIO." << LL_ENDL;
@@ -747,7 +747,7 @@ bool _cert_subdomain_wildcard_match(const std::string& subdomain,
 {
     // split wildcard into the portion before the *, and the portion after
 
-    int wildcard_pos = wildcard.find_first_of('*');
+    auto wildcard_pos = wildcard.find_first_of('*');
     // check the case where there is no wildcard.
     if(wildcard_pos == wildcard.npos)
     {
@@ -759,7 +759,7 @@ bool _cert_subdomain_wildcard_match(const std::string& subdomain,
     if(subdomain.substr(0, wildcard_pos) != wildcard.substr(0, wildcard_pos))
     {
         // the first portions of the strings didn't match
-        return FALSE;
+        return false;
     }
 
     // as the portion of the wildcard string before the * matched, we need to check the
@@ -768,7 +768,7 @@ bool _cert_subdomain_wildcard_match(const std::string& subdomain,
     if(new_wildcard_string.empty())
     {
         // we had nothing after the *, so it's an automatic match
-        return TRUE;
+        return true;
     }
 
     // grab the portion of the remaining wildcard string before the next '*'.  We need to find this
@@ -779,20 +779,20 @@ bool _cert_subdomain_wildcard_match(const std::string& subdomain,
     std::string new_subdomain = subdomain.substr(wildcard_pos, subdomain.npos);
 
     // iterate through the current subdomain, finding instances of the match string.
-    int sub_pos = new_subdomain.find_first_of(new_wildcard_match_string);
+    auto sub_pos = new_subdomain.find_first_of(new_wildcard_match_string);
     while(sub_pos != std::string::npos)
     {
         new_subdomain = new_subdomain.substr(sub_pos, std::string::npos);
         if(_cert_subdomain_wildcard_match(new_subdomain, new_wildcard_string))
         {
-            return TRUE;
+            return true;
         }
         sub_pos = new_subdomain.find_first_of(new_wildcard_match_string, 1);
 
 
     }
     // didn't find any instances of the match string that worked in the subdomain, so fail.
-    return FALSE;
+    return false;
 }
 
 
@@ -811,8 +811,8 @@ bool _cert_hostname_wildcard_match(const std::string& hostname, const std::strin
     std::string new_cn = common_name;
 
     // find the last '.' in the hostname and the match name.
-    int subdomain_pos = new_hostname.find_last_of('.');
-    int subcn_pos = new_cn.find_last_of('.');
+    auto subdomain_pos = new_hostname.find_last_of('.');
+    auto subcn_pos = new_cn.find_last_of('.');
 
     // if the last char is a '.', strip it
     if(subdomain_pos == (new_hostname.length()-1))
@@ -837,7 +837,7 @@ bool _cert_hostname_wildcard_match(const std::string& hostname, const std::strin
         if(!_cert_subdomain_wildcard_match(new_hostname.substr(subdomain_pos+1, std::string::npos),
                                            cn_part))
         {
-            return FALSE;
+            return false;
         }
         new_hostname = new_hostname.substr(0, subdomain_pos);
         new_cn = new_cn.substr(0, subcn_pos);
@@ -849,7 +849,7 @@ bool _cert_hostname_wildcard_match(const std::string& hostname, const std::strin
     if(new_cn == "*")
     {
         // if it's just a '*' we support all child domains as well, so '*.
-        return TRUE;
+        return true;
     }
 
     return _cert_subdomain_wildcard_match(new_hostname, new_cn);
@@ -865,10 +865,10 @@ bool _LLSDArrayIncludesValue(const LLSD& llsd_set, LLSD llsd_value)
     {
         if(valueCompareLLSD((*set_value), llsd_value))
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 void _validateCert(int validation_policy,
@@ -975,7 +975,7 @@ void _validateCert(int validation_policy,
 bool _verify_signature(LLPointer<LLCertificate> parent,
                        LLPointer<LLCertificate> child)
 {
-    bool verify_result = FALSE;
+    bool verify_result = false;
     LLSD cert1, cert2;
     parent->getLLSD(cert1);
     child->getLLSD(cert2);
@@ -1860,7 +1860,7 @@ std::string LLSecAPIBasicHandler::_legacyLoadPassword()
     unsigned char unique_id[MAC_ADDRESS_BYTES];
     LLMachineID::getUniqueID(unique_id, sizeof(unique_id));
     LLXORCipher cipher(unique_id, sizeof(unique_id));
-    cipher.decrypt(&buffer[0], buffer.size());
+    cipher.decrypt(&buffer[0], static_cast<U32>(buffer.size()));
 
     return std::string((const char*)&buffer[0], buffer.size());
 }
@@ -1913,7 +1913,7 @@ bool valueCompareLLSD(const LLSD& lhs, const LLSD& rhs)
 {
     if (lhs.type() != rhs.type())
     {
-        return FALSE;
+        return false;
     }
     if (lhs.isMap())
     {
@@ -1925,7 +1925,7 @@ bool valueCompareLLSD(const LLSD& lhs, const LLSD& rhs)
         {
             if (!rhs.has(litt->first))
             {
-                return FALSE;
+                return false;
             }
         }
 
@@ -1937,14 +1937,14 @@ bool valueCompareLLSD(const LLSD& lhs, const LLSD& rhs)
         {
             if (!lhs.has(ritt->first))
             {
-                return FALSE;
+                return false;
             }
             if (!valueCompareLLSD(lhs[ritt->first], ritt->second))
             {
-                return FALSE;
+                return false;
             }
         }
-        return TRUE;
+        return true;
     }
     else if (lhs.isArray())
     {
@@ -1956,7 +1956,7 @@ bool valueCompareLLSD(const LLSD& lhs, const LLSD& rhs)
         {
             if (!valueCompareLLSD(*ritt, *litt))
             {
-                return FALSE;
+                return false;
             }
             ritt++;
         }
diff --git a/indra/newview/llsechandler_basic.h b/indra/newview/llsechandler_basic.h
index b4108d0c0e..1484c6d0e1 100644
--- a/indra/newview/llsechandler_basic.h
+++ b/indra/newview/llsechandler_basic.h
@@ -138,7 +138,7 @@ public:
     virtual iterator find(const LLSD& params);
 
     // return the number of certs in the store
-    virtual int size() const { return mCerts.size(); }
+    virtual int size() const { return static_cast<int>(mCerts.size()); }
 
     // insert the cert to the store.  if a copy of the cert already exists in the store, it is removed first
     virtual void  add(LLPointer<LLCertificate> cert) { insert(end(), cert); }
diff --git a/indra/newview/llselectmgr.cpp b/indra/newview/llselectmgr.cpp
index 870cd394ee..aed35939a6 100644
--- a/indra/newview/llselectmgr.cpp
+++ b/indra/newview/llselectmgr.cpp
@@ -112,14 +112,14 @@ const S32 MAX_CHILDREN_PER_TASK = 255;
 // Globals
 //
 
-//BOOL gDebugSelectMgr = FALSE;
+//bool gDebugSelectMgr = false;
 
-//BOOL gHideSelectedObjects = FALSE;
-//BOOL gAllowSelectAvatar = FALSE;
+//bool gHideSelectedObjects = false;
+//bool gAllowSelectAvatar = false;
 
-BOOL LLSelectMgr::sRectSelectInclusive = TRUE;
-BOOL LLSelectMgr::sRenderHiddenSelections = TRUE;
-BOOL LLSelectMgr::sRenderLightRadius = FALSE;
+bool LLSelectMgr::sRectSelectInclusive = true;
+bool LLSelectMgr::sRenderHiddenSelections = true;
+bool LLSelectMgr::sRenderLightRadius = false;
 F32 LLSelectMgr::sHighlightThickness = 0.f;
 F32 LLSelectMgr::sHighlightUScale = 0.f;
 F32 LLSelectMgr::sHighlightVScale = 0.f;
@@ -213,12 +213,12 @@ void LLSelectMgr::cleanupGlobals()
 // LLSelectMgr()
 //-----------------------------------------------------------------------------
 LLSelectMgr::LLSelectMgr()
- : mHideSelectedObjects(LLCachedControl<bool>(gSavedSettings, "HideSelectedObjects", FALSE)),
-   mRenderHighlightSelections(LLCachedControl<bool>(gSavedSettings, "RenderHighlightSelections", TRUE)),
-   mAllowSelectAvatar( LLCachedControl<bool>(gSavedSettings, "AllowSelectAvatar", FALSE)),
-   mDebugSelectMgr(LLCachedControl<bool>(gSavedSettings, "DebugSelectMgr", FALSE))
+ : mHideSelectedObjects(LLCachedControl<bool>(gSavedSettings, "HideSelectedObjects", false)),
+   mRenderHighlightSelections(LLCachedControl<bool>(gSavedSettings, "RenderHighlightSelections", true)),
+   mAllowSelectAvatar( LLCachedControl<bool>(gSavedSettings, "AllowSelectAvatar", false)),
+   mDebugSelectMgr(LLCachedControl<bool>(gSavedSettings, "DebugSelectMgr", false))
 {
-    mTEMode = FALSE;
+    mTEMode = false;
     mTextureChannel = LLRender::DIFFUSE_MAP;
     mLastCameraPos.clearVec();
 
@@ -239,7 +239,7 @@ LLSelectMgr::LLSelectMgr()
 
     sRenderLightRadius = gSavedSettings.getBOOL("RenderLightRadius");
 
-    mRenderSilhouettes = TRUE;
+    mRenderSilhouettes = true;
 
     mGridMode = GRID_MODE_WORLD;
     gSavedSettings.setS32("GridMode", (S32)GRID_MODE_WORLD);
@@ -248,8 +248,8 @@ LLSelectMgr::LLSelectMgr()
     mHoverObjects = new LLObjectSelection();
     mHighlightedObjects = new LLObjectSelection();
 
-    mForceSelection = FALSE;
-    mShowSelection = FALSE;
+    mForceSelection = false;
+    mShowSelection = false;
 }
 
 
@@ -481,7 +481,7 @@ LLObjectSelectionHandle LLSelectMgr::selectObjectOnly(LLViewerObject* object, S3
 
     // Place it in the list and tag it.
     // This will refresh dialogs.
-    addAsIndividual(object, face, TRUE, gltf_node, gltf_primitive);
+    addAsIndividual(object, face, true, gltf_node, gltf_primitive);
 
     // Stop the object from moving (this anticipates changes on the
     // simulator in LLTask::userSelect)
@@ -519,7 +519,7 @@ LLObjectSelectionHandle LLSelectMgr::selectObjectOnly(LLViewerObject* object, S3
 //-----------------------------------------------------------------------------
 // Select the object, parents and children.
 //-----------------------------------------------------------------------------
-LLObjectSelectionHandle LLSelectMgr::selectObjectAndFamily(LLViewerObject* obj, BOOL add_to_end, BOOL ignore_select_owned)
+LLObjectSelectionHandle LLSelectMgr::selectObjectAndFamily(LLViewerObject* obj, bool add_to_end, bool ignore_select_owned)
 {
     llassert( obj );
 
@@ -582,7 +582,7 @@ LLObjectSelectionHandle LLSelectMgr::selectObjectAndFamily(LLViewerObject* obj,
     // leave component mode
     if (gSavedSettings.getBOOL("EditLinkedParts"))
     {
-        gSavedSettings.setBOOL("EditLinkedParts", FALSE);
+        gSavedSettings.setBOOL("EditLinkedParts", false);
         promoteSelectionToRoot();
     }
 
@@ -600,7 +600,7 @@ LLObjectSelectionHandle LLSelectMgr::selectObjectAndFamily(LLViewerObject* obj,
 // Select the object, parents and children.
 //-----------------------------------------------------------------------------
 LLObjectSelectionHandle LLSelectMgr::selectObjectAndFamily(const std::vector<LLViewerObject*>& object_list,
-                                                           BOOL send_to_sim)
+                                                           bool send_to_sim)
 {
     // Collect all of the objects, children included
     std::vector<LLViewerObject*> objects;
@@ -652,7 +652,7 @@ LLObjectSelectionHandle LLSelectMgr::selectObjectAndFamily(const std::vector<LLV
     // leave component mode
     if (gSavedSettings.getBOOL("EditLinkedParts"))
     {
-        gSavedSettings.setBOOL("EditLinkedParts", FALSE);
+        gSavedSettings.setBOOL("EditLinkedParts", false);
         promoteSelectionToRoot();
     }
 
@@ -670,9 +670,9 @@ LLObjectSelectionHandle LLSelectMgr::selectObjectAndFamily(const std::vector<LLV
 // handles informing the current tool of the object's deletion.
 //
 // Caller needs to call dialog_refresh_all if necessary.
-BOOL LLSelectMgr::removeObjectFromSelections(const LLUUID &id)
+bool LLSelectMgr::removeObjectFromSelections(const LLUUID &id)
 {
-    BOOL object_found = FALSE;
+    bool object_found = false;
     LLTool *tool = NULL;
 
     tool = LLToolMgr::getInstance()->getCurrentTool();
@@ -682,7 +682,7 @@ BOOL LLSelectMgr::removeObjectFromSelections(const LLUUID &id)
     if( tool_editing_object && tool_editing_object->mID == id)
     {
         tool->stopEditing();
-        object_found = TRUE;
+        object_found = true;
     }
 
     // Iterate through selected objects list and kill the object
@@ -701,15 +701,15 @@ BOOL LLSelectMgr::removeObjectFromSelections(const LLUUID &id)
                 }
 
                 // lose the selection, don't tell simulator, it knows
-                deselectObjectAndFamily(object, FALSE);
-                object_found = TRUE;
+                deselectObjectAndFamily(object, false);
+                object_found = true;
                 break; // must break here, may have removed multiple objects from list
             }
             else if (object->isAvatar() && object->getParent() && ((LLViewerObject*)object->getParent())->mID == id)
             {
                 // It's possible the item being removed has an avatar sitting on it
                 // So remove the avatar that is sitting on the object.
-                deselectObjectAndFamily(object, FALSE);
+                deselectObjectAndFamily(object, false);
                 break; // must break here, may have removed multiple objects from list
             }
         }
@@ -862,7 +862,7 @@ bool LLSelectMgr::enableUnlinkObjects()
     return new_value;
 }
 
-void LLSelectMgr::deselectObjectAndFamily(LLViewerObject* object, BOOL send_to_sim, BOOL include_entire_object)
+void LLSelectMgr::deselectObjectAndFamily(LLViewerObject* object, bool send_to_sim, bool include_entire_object)
 {
     // bail if nothing selected or if object wasn't selected in the first place
     if(!object) return;
@@ -904,7 +904,7 @@ void LLSelectMgr::deselectObjectAndFamily(LLViewerObject* object, BOOL send_to_s
     //-----------------------------------------------------------
     LLViewerRegion* regionp = object->getRegion();
 
-    BOOL start_new_message = TRUE;
+    bool start_new_message = true;
     S32 select_count = 0;
 
     LLMessageSystem* msg = gMessageSystem;
@@ -917,7 +917,7 @@ void LLSelectMgr::deselectObjectAndFamily(LLViewerObject* object, BOOL send_to_s
             msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID() );
             msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
             select_count++;
-            start_new_message = FALSE;
+            start_new_message = false;
         }
 
         msg->nextBlockFast(_PREHASH_ObjectData);
@@ -932,7 +932,7 @@ void LLSelectMgr::deselectObjectAndFamily(LLViewerObject* object, BOOL send_to_s
         {
             msg->sendReliable(regionp->getHost() );
             select_count = 0;
-            start_new_message = TRUE;
+            start_new_message = true;
         }
     }
 
@@ -945,7 +945,7 @@ void LLSelectMgr::deselectObjectAndFamily(LLViewerObject* object, BOOL send_to_s
     updateSelectionCenter();
 }
 
-void LLSelectMgr::deselectObjectOnly(LLViewerObject* object, BOOL send_to_sim)
+void LLSelectMgr::deselectObjectOnly(LLViewerObject* object, bool send_to_sim)
 {
     // bail if nothing selected or if object wasn't selected in the first place
     if (!object) return;
@@ -979,7 +979,7 @@ void LLSelectMgr::deselectObjectOnly(LLViewerObject* object, BOOL send_to_sim)
 // addAsFamily
 //-----------------------------------------------------------------------------
 
-void LLSelectMgr::addAsFamily(std::vector<LLViewerObject*>& objects, BOOL add_to_end)
+void LLSelectMgr::addAsFamily(std::vector<LLViewerObject*>& objects, bool add_to_end)
 {
     for (std::vector<LLViewerObject*>::iterator iter = objects.begin();
          iter != objects.end(); ++iter)
@@ -995,7 +995,7 @@ void LLSelectMgr::addAsFamily(std::vector<LLViewerObject*>& objects, BOOL add_to
 
         if (!objectp->isSelected())
         {
-            LLSelectNode *nodep = new LLSelectNode(objectp, TRUE);
+            LLSelectNode *nodep = new LLSelectNode(objectp, true);
             if (add_to_end)
             {
                 mSelectedObjects->addNodeAtEnd(nodep);
@@ -1004,11 +1004,11 @@ void LLSelectMgr::addAsFamily(std::vector<LLViewerObject*>& objects, BOOL add_to
             {
                 mSelectedObjects->addNode(nodep);
             }
-            objectp->setSelected(TRUE);
+            objectp->setSelected(true);
 
             if (objectp->getNumTEs() > 0)
             {
-                nodep->selectAllTEs(TRUE);
+                nodep->selectAllTEs(true);
                 objectp->setAllTESelected(true);
             }
             else
@@ -1023,7 +1023,7 @@ void LLSelectMgr::addAsFamily(std::vector<LLViewerObject*>& objects, BOOL add_to
             LLSelectNode* select_node = mSelectedObjects->findNode(objectp);
             if (select_node)
             {
-                select_node->setTransient(FALSE);
+                select_node->setTransient(false);
             }
         }
     }
@@ -1033,7 +1033,7 @@ void LLSelectMgr::addAsFamily(std::vector<LLViewerObject*>& objects, BOOL add_to
 //-----------------------------------------------------------------------------
 // addAsIndividual() - a single object, face, etc
 //-----------------------------------------------------------------------------
-void LLSelectMgr::addAsIndividual(LLViewerObject *objectp, S32 face, BOOL undoable, S32 gltf_node, S32 gltf_primitive)
+void LLSelectMgr::addAsIndividual(LLViewerObject *objectp, S32 face, bool undoable, S32 gltf_node, S32 gltf_primitive)
 {
     // check to see if object is already in list
     LLSelectNode *nodep = mSelectedObjects->findNode(objectp);
@@ -1041,23 +1041,23 @@ void LLSelectMgr::addAsIndividual(LLViewerObject *objectp, S32 face, BOOL undoab
     // if not in list, add it
     if (!nodep)
     {
-        nodep = new LLSelectNode(objectp, TRUE);
+        nodep = new LLSelectNode(objectp, true);
         mSelectedObjects->addNode(nodep);
         llassert_always(nodep->getObject());
     }
     else
     {
         // make this a full-fledged selection
-        nodep->setTransient(FALSE);
+        nodep->setTransient(false);
         // Move it to the front of the list
         mSelectedObjects->moveNodeToFront(nodep);
     }
 
     // Make sure the object is tagged as selected
-    objectp->setSelected( TRUE );
+    objectp->setSelected( true );
 
     // And make sure we don't consider it as part of a family
-    nodep->mIndividualSelection = TRUE;
+    nodep->mIndividualSelection = true;
 
     // Handle face selection
     if (objectp->getNumTEs() <= 0)
@@ -1066,12 +1066,12 @@ void LLSelectMgr::addAsIndividual(LLViewerObject *objectp, S32 face, BOOL undoab
     }
     else if (face == SELECT_ALL_TES)
     {
-        nodep->selectAllTEs(TRUE);
+        nodep->selectAllTEs(true);
         objectp->setAllTESelected(true);
     }
     else if (0 <= face && face < SELECT_MAX_TES)
     {
-        nodep->selectTE(face, TRUE);
+        nodep->selectTE(face, true);
         objectp->setTESelected(face, true);
     }
     else
@@ -1083,7 +1083,7 @@ void LLSelectMgr::addAsIndividual(LLViewerObject *objectp, S32 face, BOOL undoab
     // Handle glTF node selection
     if (gltf_node >= 0)
     {
-        nodep->selectGLTFNode(gltf_node, gltf_primitive, TRUE);
+        nodep->selectGLTFNode(gltf_node, gltf_primitive, true);
 
     }
 
@@ -1138,8 +1138,8 @@ LLObjectSelectionHandle LLSelectMgr::setHoverObject(LLViewerObject *objectp, S32
             {
                 continue;
             }
-            LLSelectNode* nodep = new LLSelectNode(cur_objectp, FALSE);
-            nodep->selectTE(face, TRUE);
+            LLSelectNode* nodep = new LLSelectNode(cur_objectp, false);
+            nodep->selectTE(face, true);
             mHoverObjects->addNodeAtEnd(nodep);
         }
 
@@ -1302,7 +1302,7 @@ LLObjectSelectionHandle LLSelectMgr::selectHighlightedObjects()
         mSelectedObjects->addNode(new_nodep);
 
         // flag this object as selected
-        objectp->setSelected(TRUE);
+        objectp->setSelected(true);
         objectp->setAllTESelected(true);
 
         mSelectedObjects->mSelectType = getSelectTypeForObject(objectp);
@@ -1331,7 +1331,7 @@ LLObjectSelectionHandle LLSelectMgr::selectHighlightedObjects()
 
 void LLSelectMgr::deselectHighlightedObjects()
 {
-    BOOL select_linked_set = !gSavedSettings.getBOOL("EditLinkedParts");
+    bool select_linked_set = !gSavedSettings.getBOOL("EditLinkedParts");
     for (std::set<LLPointer<LLViewerObject> >::iterator iter = mRectSelectedObjects.begin();
          iter != mRectSelectedObjects.end(); iter++)
     {
@@ -1355,7 +1355,7 @@ void LLSelectMgr::deselectHighlightedObjects()
 
 void LLSelectMgr::addGridObject(LLViewerObject* objectp)
 {
-    LLSelectNode* nodep = new LLSelectNode(objectp, FALSE);
+    LLSelectNode* nodep = new LLSelectNode(objectp, false);
     mGridObjects.addNodeAtEnd(nodep);
 
     LLViewerObject::const_child_list_t& child_list = objectp->getChildren();
@@ -1363,7 +1363,7 @@ void LLSelectMgr::addGridObject(LLViewerObject* objectp)
          iter != child_list.end(); iter++)
     {
         LLViewerObject* child = *iter;
-        nodep = new LLSelectNode(child, FALSE);
+        nodep = new LLSelectNode(child, false);
         mGridObjects.addNodeAtEnd(nodep);
     }
 }
@@ -1417,7 +1417,7 @@ void LLSelectMgr::getGrid(LLVector3& origin, LLQuaternion &rotation, LLVector3 &
 
         LLVector4a min_extents(F32_MAX);
         LLVector4a max_extents(-F32_MAX);
-        BOOL grid_changed = FALSE;
+        bool grid_changed = false;
         for (LLObjectSelection::iterator iter = mGridObjects.begin();
              iter != mGridObjects.end(); ++iter)
         {
@@ -1428,7 +1428,7 @@ void LLSelectMgr::getGrid(LLVector3& origin, LLQuaternion &rotation, LLVector3 &
                 const LLVector4a* ext = drawable->getSpatialExtents();
                 update_min_max(min_extents, max_extents, ext[0]);
                 update_min_max(min_extents, max_extents, ext[1]);
-                grid_changed = TRUE;
+                grid_changed = true;
             }
         }
         if (grid_changed)
@@ -1450,7 +1450,7 @@ void LLSelectMgr::getGrid(LLVector3& origin, LLQuaternion &rotation, LLVector3 &
     }
     else // GRID_MODE_WORLD or just plain default
     {
-        const BOOL non_root_ok = TRUE;
+        const bool non_root_ok = true;
         LLViewerObject* first_object = mSelectedObjects->getFirstRootObject(non_root_ok);
 
         mGridOrigin.clearVec();
@@ -1498,7 +1498,7 @@ void LLSelectMgr::remove(std::vector<LLViewerObject*>& objects)
         LLSelectNode* nodep = mSelectedObjects->findNode(objectp);
         if (nodep)
         {
-            objectp->setSelected(FALSE);
+            objectp->setSelected(false);
             mSelectedObjects->removeNode(nodep);
             nodep = NULL;
         }
@@ -1511,7 +1511,7 @@ void LLSelectMgr::remove(std::vector<LLViewerObject*>& objects)
 //-----------------------------------------------------------------------------
 // remove() - a single object
 //-----------------------------------------------------------------------------
-void LLSelectMgr::remove(LLViewerObject *objectp, S32 te, BOOL undoable)
+void LLSelectMgr::remove(LLViewerObject *objectp, S32 te, bool undoable)
 {
     // get object node (and verify it is in the selected list)
     LLSelectNode *nodep = mSelectedObjects->findNode(objectp);
@@ -1526,14 +1526,14 @@ void LLSelectMgr::remove(LLViewerObject *objectp, S32 te, BOOL undoable)
         // Remove all faces (or the object doesn't have faces) so remove the node
         mSelectedObjects->removeNode(nodep);
         nodep = NULL;
-        objectp->setSelected( FALSE );
+        objectp->setSelected( false );
     }
     else if (0 <= te && te < SELECT_MAX_TES)
     {
         // ...valid face, check to see if it was on
         if (nodep->isTESelected(te))
         {
-            nodep->selectTE(te, FALSE);
+            nodep->selectTE(te, false);
             objectp->setTESelected(te, false);
         }
         else
@@ -1543,7 +1543,7 @@ void LLSelectMgr::remove(LLViewerObject *objectp, S32 te, BOOL undoable)
         }
 
         // ...check to see if this operation turned off all faces
-        BOOL found = FALSE;
+        bool found = false;
         for (S32 i = 0; i < nodep->getObject()->getNumTEs(); i++)
         {
             found = found || nodep->isTESelected(i);
@@ -1554,7 +1554,7 @@ void LLSelectMgr::remove(LLViewerObject *objectp, S32 te, BOOL undoable)
         {
             mSelectedObjects->removeNode(nodep);
             nodep = NULL;
-            objectp->setSelected( FALSE );
+            objectp->setSelected( false );
             // *FIXME: Doesn't update simulator that object is no longer selected
         }
     }
@@ -1578,7 +1578,7 @@ void LLSelectMgr::removeAll()
          iter != mSelectedObjects->end(); iter++ )
     {
         LLViewerObject *objectp = (*iter)->getObject();
-        objectp->setSelected( FALSE );
+        objectp->setSelected( false );
     }
 
     mSelectedObjects->deleteAllNodes();
@@ -1594,7 +1594,7 @@ void LLSelectMgr::promoteSelectionToRoot()
 {
     std::set<LLViewerObject*> selection_set;
 
-    BOOL selection_changed = FALSE;
+    bool selection_changed = false;
 
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); )
@@ -1605,7 +1605,7 @@ void LLSelectMgr::promoteSelectionToRoot()
 
         if (nodep->mIndividualSelection)
         {
-            selection_changed = TRUE;
+            selection_changed = true;
         }
 
         LLViewerObject* parentp = object;
@@ -1871,7 +1871,7 @@ bool LLSelectMgr::selectionSetImage(const LLUUID& imageid)
             if (mItem && objectp->isAttachment())
             {
                 const LLPermissions& perm = mItem->getPermissions();
-                BOOL unrestricted = ((perm.getMaskBase() & PERM_ITEM_UNRESTRICTED) == PERM_ITEM_UNRESTRICTED) ? TRUE : FALSE;
+                bool unrestricted = (perm.getMaskBase() & PERM_ITEM_UNRESTRICTED) == PERM_ITEM_UNRESTRICTED;
                 if (!unrestricted)
                 {
                     // Attachments are in world and in inventory simultaneously,
@@ -1894,7 +1894,7 @@ bool LLSelectMgr::selectionSetImage(const LLUUID& imageid)
                 // Texture picker defaults aren't inventory items
                 // * Don't need to worry about permissions for them
                 // * Can just apply the texture and be done with it.
-                objectp->setTEImage(te, LLViewerTextureManager::getFetchedTexture(mImageID, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE));
+                objectp->setTEImage(te, LLViewerTextureManager::getFetchedTexture(mImageID, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE));
             }
 
             return true;
@@ -1922,7 +1922,7 @@ bool LLSelectMgr::selectionSetImage(const LLUUID& imageid)
             {
                 object->sendTEUpdate();
                 // 1 particle effect per object
-                LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, TRUE);
+                LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, true);
                 effectp->setSourceObject(gAgentAvatarp);
                 effectp->setTargetObject(object);
                 effectp->setDuration(LL_HUD_DUR_SHORT);
@@ -2036,7 +2036,7 @@ bool LLSelectMgr::selectionSetGLTFMaterial(const LLUUID& mat_id)
             if (!mItem)
             {
                 // 1 particle effect per object
-                LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, TRUE);
+                LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, true);
                 effectp->setSourceObject(gAgentAvatarp);
                 effectp->setTargetObject(object);
                 effectp->setDuration(LL_HUD_DUR_SHORT);
@@ -2194,7 +2194,7 @@ void LLSelectMgr::selectionRevertShinyColors()
     getSelection()->applyToObjects(&sendfunc);
 }
 
-BOOL LLSelectMgr::selectionRevertTextures()
+bool LLSelectMgr::selectionRevertTextures()
 {
     struct f : public LLSelectedTEFunctor
     {
@@ -2212,11 +2212,11 @@ BOOL LLSelectMgr::selectionRevertTextures()
                     if (id.isNull())
                     {
                         // this was probably a no-copy texture, leave image as-is
-                        return FALSE;
+                        return false;
                     }
                     else
                     {
-                        object->setTEImage(te, LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE));
+                        object->setTEImage(te, LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE));
 
                     }
                 }
@@ -2224,7 +2224,7 @@ BOOL LLSelectMgr::selectionRevertTextures()
             return true;
         }
     } setfunc(mSelectedObjects);
-    BOOL revert_successful = getSelection()->applyToTEs(&setfunc);
+    bool revert_successful = getSelection()->applyToTEs(&setfunc);
 
     LLSelectMgrSendFunctor sendfunc;
     getSelection()->applyToObjects(&sendfunc);
@@ -2299,6 +2299,7 @@ void LLSelectMgr::selectionSetBumpmap(U8 bumpmap, const LLUUID &image_id)
         LL_WARNS() << "Attempted to apply no-copy texture to multiple objects" << LL_ENDL;
         return;
     }
+
     if (item && !item->getPermissions().allowOperationBy(PERM_COPY, gAgent.getID()))
     {
         LLViewerObject *object = mSelectedObjects->getFirstRootObject();
@@ -2307,8 +2308,8 @@ void LLSelectMgr::selectionSetBumpmap(U8 bumpmap, const LLUUID &image_id)
             return;
         }
         const LLPermissions& perm = item->getPermissions();
-        BOOL unrestricted = ((perm.getMaskBase() & PERM_ITEM_UNRESTRICTED) == PERM_ITEM_UNRESTRICTED) ? TRUE : FALSE;
-        BOOL attached = object->isAttachment();
+        bool unrestricted = (perm.getMaskBase() & PERM_ITEM_UNRESTRICTED) == PERM_ITEM_UNRESTRICTED;
+        bool attached = object->isAttachment();
         if (attached && !unrestricted)
         {
             // Attachments are in world and in inventory simultaneously,
@@ -2371,6 +2372,7 @@ void LLSelectMgr::selectionSetShiny(U8 shiny, const LLUUID &image_id)
         LL_WARNS() << "Attempted to apply no-copy texture to multiple objects" << LL_ENDL;
         return;
     }
+
     if (item && !item->getPermissions().allowOperationBy(PERM_COPY, gAgent.getID()))
     {
         LLViewerObject *object = mSelectedObjects->getFirstRootObject();
@@ -2379,8 +2381,8 @@ void LLSelectMgr::selectionSetShiny(U8 shiny, const LLUUID &image_id)
             return;
         }
         const LLPermissions& perm = item->getPermissions();
-        BOOL unrestricted = ((perm.getMaskBase() & PERM_ITEM_UNRESTRICTED) == PERM_ITEM_UNRESTRICTED) ? TRUE : FALSE;
-        BOOL attached = object->isAttachment();
+        bool unrestricted = (perm.getMaskBase() & PERM_ITEM_UNRESTRICTED) == PERM_ITEM_UNRESTRICTED;
+        bool attached = object->isAttachment();
         if (attached && !unrestricted)
         {
             // Attachments are in world and in inventory simultaneously,
@@ -2645,9 +2647,9 @@ LLPermissions* LLSelectMgr::findObjectPermissions(const LLViewerObject* object)
 //-----------------------------------------------------------------------------
 // selectionGetGlow()
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectionGetGlow(F32 *glow)
+bool LLSelectMgr::selectionGetGlow(F32 *glow)
 {
-    BOOL identical;
+    bool identical;
     F32 lglow = 0.f;
     struct f1 : public LLSelectedTEGetFunctor<F32>
     {
@@ -2674,7 +2676,7 @@ void LLSelectMgr::selectionSetPhysicsType(U8 type)
             if (object->permModify())
             {
                 object->setPhysicsShapeType(mType);
-                object->updateFlags(TRUE);
+                object->updateFlags(true);
             }
             return true;
         }
@@ -2693,7 +2695,7 @@ void LLSelectMgr::selectionSetFriction(F32 friction)
             if (object->permModify())
             {
                 object->setPhysicsFriction(mFriction);
-                object->updateFlags(TRUE);
+                object->updateFlags(true);
             }
             return true;
         }
@@ -2712,7 +2714,7 @@ void LLSelectMgr::selectionSetGravity(F32 gravity )
             if (object->permModify())
             {
                 object->setPhysicsGravity(mGravity);
-                object->updateFlags(TRUE);
+                object->updateFlags(true);
             }
             return true;
         }
@@ -2731,7 +2733,7 @@ void LLSelectMgr::selectionSetDensity(F32 density )
             if (object->permModify())
             {
                 object->setPhysicsDensity(mDensity);
-                object->updateFlags(TRUE);
+                object->updateFlags(true);
             }
             return true;
         }
@@ -2750,7 +2752,7 @@ void LLSelectMgr::selectionSetRestitution(F32 restitution)
             if (object->permModify())
             {
                 object->setPhysicsRestitution(mRestitution);
-                object->updateFlags(TRUE);
+                object->updateFlags(true);
             }
             return true;
         }
@@ -2783,8 +2785,8 @@ void LLSelectMgr::selectionSetMaterial(U8 material)
     getSelection()->applyToObjects(&sendfunc);
 }
 
-// TRUE if all selected objects have this PCode
-BOOL LLSelectMgr::selectionAllPCode(LLPCode code)
+// true if all selected objects have this PCode
+bool LLSelectMgr::selectionAllPCode(LLPCode code)
 {
     struct f : public LLSelectedObjectFunctor
     {
@@ -2794,19 +2796,19 @@ BOOL LLSelectMgr::selectionAllPCode(LLPCode code)
         {
             if (object->getPCode() != mCode)
             {
-                return FALSE;
+                return false;
             }
             return true;
         }
     } func(code);
-    BOOL res = getSelection()->applyToObjects(&func);
+    bool res = getSelection()->applyToObjects(&func);
     return res;
 }
 
 bool LLSelectMgr::selectionGetIncludeInSearch(bool* include_in_search_out)
 {
     LLViewerObject *object = mSelectedObjects->getFirstRootObject();
-    if (!object) return FALSE;
+    if (!object) return false;
 
     bool include_in_search = object->getIncludeInSearch();
 
@@ -2846,12 +2848,12 @@ void LLSelectMgr::selectionSetIncludeInSearch(bool include_in_search)
         SEND_ONLY_ROOTS);
 }
 
-BOOL LLSelectMgr::selectionGetClickAction(U8 *out_action)
+bool LLSelectMgr::selectionGetClickAction(U8 *out_action)
 {
     LLViewerObject *object = mSelectedObjects->getFirstObject();
     if (!object)
     {
-        return FALSE;
+        return false;
     }
 
     U8 action = object->getClickAction();
@@ -2870,7 +2872,7 @@ BOOL LLSelectMgr::selectionGetClickAction(U8 *out_action)
             return true;
         }
     } func(action);
-    BOOL res = getSelection()->applyToObjects(&func);
+    bool res = getSelection()->applyToObjects(&func);
     return res;
 }
 
@@ -2998,7 +3000,7 @@ void LLSelectMgr::selectionTexScaleAutofit(F32 repeats_per_meter)
                 U32 s_axis, t_axis;
                 if (!LLPrimitive::getTESTAxes(te, &s_axis, &t_axis))
                 {
-                    return TRUE;
+                    return true;
                 }
 
                 F32 new_s = object->getScale().mV[s_axis] * mRepeatsPerMeter;
@@ -3023,7 +3025,7 @@ void LLSelectMgr::selectionTexScaleAutofit(F32 repeats_per_meter)
 //-----------------------------------------------------------------------------
 // adjustTexturesByScale()
 //-----------------------------------------------------------------------------
-void LLSelectMgr::adjustTexturesByScale(BOOL send_to_sim, BOOL stretch)
+void LLSelectMgr::adjustTexturesByScale(bool send_to_sim, bool stretch)
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++)
@@ -3046,13 +3048,13 @@ void LLSelectMgr::adjustTexturesByScale(BOOL send_to_sim, BOOL stretch)
             continue;
         }
 
-        BOOL send = FALSE;
+        bool send = false;
 
         for (U8 te_num = 0; te_num < object->getNumTEs(); te_num++)
         {
             const LLTextureEntry* tep = object->getTE(te_num);
 
-            BOOL planar = tep->getTexGen() == LLTextureEntry::TEX_GEN_PLANAR;
+            bool planar = tep->getTexGen() == LLTextureEntry::TEX_GEN_PLANAR;
             if (planar == stretch)
             {
                 // Figure out how S,T changed with scale operation
@@ -3136,9 +3138,9 @@ void LLSelectMgr::adjustTexturesByScale(BOOL send_to_sim, BOOL stretch)
 
 //-----------------------------------------------------------------------------
 // selectGetAllRootsValid()
-// Returns TRUE if the viewer has information on all selected objects
+// Returns true if the viewer has information on all selected objects
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetAllRootsValid()
+bool LLSelectMgr::selectGetAllRootsValid()
 {
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); ++iter )
@@ -3146,18 +3148,18 @@ BOOL LLSelectMgr::selectGetAllRootsValid()
         LLSelectNode* node = *iter;
         if( !node->mValid )
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 
 //-----------------------------------------------------------------------------
 // selectGetAllValid()
-// Returns TRUE if the viewer has information on all selected objects
+// Returns true if the viewer has information on all selected objects
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetAllValid()
+bool LLSelectMgr::selectGetAllValid()
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); ++iter )
@@ -3165,19 +3167,19 @@ BOOL LLSelectMgr::selectGetAllValid()
         LLSelectNode* node = *iter;
         if( !node->mValid )
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetAllValidAndObjectsFound() - return TRUE if selections are
+// selectGetAllValidAndObjectsFound() - return true if selections are
 // valid and objects are found.
 //
 // For EXT-3114 - same as selectGetModify() without the modify check.
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetAllValidAndObjectsFound()
+bool LLSelectMgr::selectGetAllValidAndObjectsFound()
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++ )
@@ -3186,17 +3188,17 @@ BOOL LLSelectMgr::selectGetAllValidAndObjectsFound()
         LLViewerObject* object = node->getObject();
         if( !object || !node->mValid )
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetModify() - return TRUE if current agent can modify all
+// selectGetModify() - return true if current agent can modify all
 // selected objects.
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetModify()
+bool LLSelectMgr::selectGetModify()
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++ )
@@ -3205,21 +3207,21 @@ BOOL LLSelectMgr::selectGetModify()
         LLViewerObject* object = node->getObject();
         if( !object || !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( !object->permModify() )
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetRootsModify() - return TRUE if current agent can modify all
+// selectGetRootsModify() - return true if current agent can modify all
 // selected root objects.
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetRootsModify()
+bool LLSelectMgr::selectGetRootsModify()
 {
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -3228,30 +3230,30 @@ BOOL LLSelectMgr::selectGetRootsModify()
         LLViewerObject* object = node->getObject();
         if( !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( !object->permModify() )
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetSameRegion() - return TRUE if all objects are in same region
+// selectGetSameRegion() - return true if all objects are in same region
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetSameRegion()
+bool LLSelectMgr::selectGetSameRegion()
 {
     if (getSelection()->isEmpty())
     {
-        return TRUE;
+        return true;
     }
     LLViewerObject* object = getSelection()->getFirstObject();
     if (!object)
     {
-        return FALSE;
+        return false;
     }
     LLViewerRegion* current_region = object->getRegion();
 
@@ -3262,18 +3264,18 @@ BOOL LLSelectMgr::selectGetSameRegion()
         object = node->getObject();
         if (!node->mValid || !object || current_region != object->getRegion())
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetNonPermanentEnforced() - return TRUE if all objects are not
+// selectGetNonPermanentEnforced() - return true if all objects are not
 // permanent enforced
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetNonPermanentEnforced()
+bool LLSelectMgr::selectGetNonPermanentEnforced()
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++ )
@@ -3282,21 +3284,21 @@ BOOL LLSelectMgr::selectGetNonPermanentEnforced()
         LLViewerObject* object = node->getObject();
         if( !object || !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( object->isPermanentEnforced())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetRootsNonPermanentEnforced() - return TRUE if all root objects are
+// selectGetRootsNonPermanentEnforced() - return true if all root objects are
 // not permanent enforced
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetRootsNonPermanentEnforced()
+bool LLSelectMgr::selectGetRootsNonPermanentEnforced()
 {
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -3305,21 +3307,21 @@ BOOL LLSelectMgr::selectGetRootsNonPermanentEnforced()
         LLViewerObject* object = node->getObject();
         if( !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( object->isPermanentEnforced())
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetPermanent() - return TRUE if all objects are permanent
+// selectGetPermanent() - return true if all objects are permanent
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetPermanent()
+bool LLSelectMgr::selectGetPermanent()
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++ )
@@ -3328,21 +3330,21 @@ BOOL LLSelectMgr::selectGetPermanent()
         LLViewerObject* object = node->getObject();
         if( !object || !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( !object->flagObjectPermanent())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetRootsPermanent() - return TRUE if all root objects are
+// selectGetRootsPermanent() - return true if all root objects are
 // permanent
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetRootsPermanent()
+bool LLSelectMgr::selectGetRootsPermanent()
 {
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -3351,21 +3353,21 @@ BOOL LLSelectMgr::selectGetRootsPermanent()
         LLViewerObject* object = node->getObject();
         if( !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( !object->flagObjectPermanent())
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetCharacter() - return TRUE if all objects are character
+// selectGetCharacter() - return true if all objects are character
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetCharacter()
+bool LLSelectMgr::selectGetCharacter()
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++ )
@@ -3374,21 +3376,21 @@ BOOL LLSelectMgr::selectGetCharacter()
         LLViewerObject* object = node->getObject();
         if( !object || !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( !object->flagCharacter())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetRootsCharacter() - return TRUE if all root objects are
+// selectGetRootsCharacter() - return true if all root objects are
 // character
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetRootsCharacter()
+bool LLSelectMgr::selectGetRootsCharacter()
 {
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -3397,21 +3399,21 @@ BOOL LLSelectMgr::selectGetRootsCharacter()
         LLViewerObject* object = node->getObject();
         if( !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( !object->flagCharacter())
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetNonPathfinding() - return TRUE if all objects are not pathfinding
+// selectGetNonPathfinding() - return true if all objects are not pathfinding
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetNonPathfinding()
+bool LLSelectMgr::selectGetNonPathfinding()
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++ )
@@ -3420,21 +3422,21 @@ BOOL LLSelectMgr::selectGetNonPathfinding()
         LLViewerObject* object = node->getObject();
         if( !object || !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( object->flagObjectPermanent() || object->flagCharacter())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetRootsNonPathfinding() - return TRUE if all root objects are not
+// selectGetRootsNonPathfinding() - return true if all root objects are not
 // pathfinding
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetRootsNonPathfinding()
+bool LLSelectMgr::selectGetRootsNonPathfinding()
 {
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -3443,21 +3445,21 @@ BOOL LLSelectMgr::selectGetRootsNonPathfinding()
         LLViewerObject* object = node->getObject();
         if( !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( object->flagObjectPermanent() || object->flagCharacter())
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetNonPermanent() - return TRUE if all objects are not permanent
+// selectGetNonPermanent() - return true if all objects are not permanent
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetNonPermanent()
+bool LLSelectMgr::selectGetNonPermanent()
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++ )
@@ -3466,21 +3468,21 @@ BOOL LLSelectMgr::selectGetNonPermanent()
         LLViewerObject* object = node->getObject();
         if( !object || !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( object->flagObjectPermanent())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetRootsNonPermanent() - return TRUE if all root objects are not
+// selectGetRootsNonPermanent() - return true if all root objects are not
 // permanent
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetRootsNonPermanent()
+bool LLSelectMgr::selectGetRootsNonPermanent()
 {
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -3489,21 +3491,21 @@ BOOL LLSelectMgr::selectGetRootsNonPermanent()
         LLViewerObject* object = node->getObject();
         if( !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( object->flagObjectPermanent())
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetNonCharacter() - return TRUE if all objects are not character
+// selectGetNonCharacter() - return true if all objects are not character
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetNonCharacter()
+bool LLSelectMgr::selectGetNonCharacter()
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++ )
@@ -3512,21 +3514,21 @@ BOOL LLSelectMgr::selectGetNonCharacter()
         LLViewerObject* object = node->getObject();
         if( !object || !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( object->flagCharacter())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetRootsNonCharacter() - return TRUE if all root objects are not
+// selectGetRootsNonCharacter() - return true if all root objects are not
 // character
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetRootsNonCharacter()
+bool LLSelectMgr::selectGetRootsNonCharacter()
 {
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -3535,23 +3537,23 @@ BOOL LLSelectMgr::selectGetRootsNonCharacter()
         LLViewerObject* object = node->getObject();
         if( !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( object->flagCharacter())
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
 //-----------------------------------------------------------------------------
-// selectGetEditableLinksets() - return TRUE if all objects are editable
+// selectGetEditableLinksets() - return true if all objects are editable
 //                               pathfinding linksets
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetEditableLinksets()
+bool LLSelectMgr::selectGetEditableLinksets()
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++ )
@@ -3560,7 +3562,7 @@ BOOL LLSelectMgr::selectGetEditableLinksets()
         LLViewerObject* object = node->getObject();
         if( !object || !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if (object->flagUsePhysics() ||
             object->flagTemporaryOnRez() ||
@@ -3573,17 +3575,17 @@ BOOL LLSelectMgr::selectGetEditableLinksets()
             !object->permYouOwner() &&
             !object->permMove()))
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetViewableCharacters() - return TRUE if all objects are characters
+// selectGetViewableCharacters() - return true if all objects are characters
 //                        viewable within the pathfinding characters floater
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetViewableCharacters()
+bool LLSelectMgr::selectGetViewableCharacters()
 {
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++ )
@@ -3592,22 +3594,22 @@ BOOL LLSelectMgr::selectGetViewableCharacters()
         LLViewerObject* object = node->getObject();
         if( !object || !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if( !object->flagCharacter() ||
             (object->getRegion() != gAgent.getRegion()))
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetRootsTransfer() - return TRUE if current agent can transfer all
+// selectGetRootsTransfer() - return true if current agent can transfer all
 // selected root objects.
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetRootsTransfer()
+bool LLSelectMgr::selectGetRootsTransfer()
 {
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -3616,21 +3618,21 @@ BOOL LLSelectMgr::selectGetRootsTransfer()
         LLViewerObject* object = node->getObject();
         if( !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if(!object->permTransfer())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// selectGetRootsCopy() - return TRUE if current agent can copy all
+// selectGetRootsCopy() - return true if current agent can copy all
 // selected root objects.
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetRootsCopy()
+bool LLSelectMgr::selectGetRootsCopy()
 {
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -3639,14 +3641,14 @@ BOOL LLSelectMgr::selectGetRootsCopy()
         LLViewerObject* object = node->getObject();
         if( !node->mValid )
         {
-            return FALSE;
+            return false;
         }
         if(!object->permCopy())
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
 struct LLSelectGetFirstTest
@@ -3729,7 +3731,7 @@ protected:
     }
 };
 
-BOOL LLSelectMgr::selectGetCreator(LLUUID& result_id, std::string& name)
+bool LLSelectMgr::selectGetCreator(LLUUID& result_id, std::string& name)
 {
     LLSelectGetFirstCreator test;
     getFirst(&test);
@@ -3737,7 +3739,7 @@ BOOL LLSelectMgr::selectGetCreator(LLUUID& result_id, std::string& name)
     if (test.mFirstValue.isNull())
     {
         name = LLTrans::getString("AvatarNameNobody");
-        return FALSE;
+        return false;
     }
 
     result_id = test.mFirstValue;
@@ -3769,14 +3771,14 @@ protected:
     }
 };
 
-BOOL LLSelectMgr::selectGetOwner(LLUUID& result_id, std::string& name)
+bool LLSelectMgr::selectGetOwner(LLUUID& result_id, std::string& name)
 {
     LLSelectGetFirstOwner test;
     getFirst(&test);
 
     if (test.mFirstValue.isNull())
     {
-        return FALSE;
+        return false;
     }
 
     result_id = test.mFirstValue;
@@ -3814,14 +3816,14 @@ protected:
     }
 };
 
-BOOL LLSelectMgr::selectGetLastOwner(LLUUID& result_id, std::string& name)
+bool LLSelectMgr::selectGetLastOwner(LLUUID& result_id, std::string& name)
 {
     LLSelectGetFirstLastOwner test;
     getFirst(&test);
 
     if (test.mFirstValue.isNull())
     {
-        return FALSE;
+        return false;
     }
 
     result_id = test.mFirstValue;
@@ -3851,7 +3853,7 @@ protected:
     }
 };
 
-BOOL LLSelectMgr::selectGetGroup(LLUUID& result_id)
+bool LLSelectMgr::selectGetGroup(LLUUID& result_id)
 {
     LLSelectGetFirstGroup test;
     getFirst(&test);
@@ -3863,7 +3865,7 @@ BOOL LLSelectMgr::selectGetGroup(LLUUID& result_id)
 //-----------------------------------------------------------------------------
 // selectIsGroupOwned()
 // Only operates on root nodes unless editing linked parts.
-// Returns TRUE if the first selected is group owned.
+// Returns true if the first selected is group owned.
 //-----------------------------------------------------------------------------
 struct LLSelectGetFirstGroupOwner : public LLSelectGetFirstTest
 {
@@ -3878,29 +3880,29 @@ protected:
     }
 };
 
-BOOL LLSelectMgr::selectIsGroupOwned()
+bool LLSelectMgr::selectIsGroupOwned()
 {
     LLSelectGetFirstGroupOwner test;
     getFirst(&test);
 
-    return test.mFirstValue.notNull() ? TRUE : FALSE;
+    return test.mFirstValue.notNull();
 }
 
 //-----------------------------------------------------------------------------
 // selectGetPerm()
 // Only operates on root nodes.
-// Returns TRUE if all have valid data.
-// mask_on has bits set to TRUE where all permissions are TRUE
-// mask_off has bits set to TRUE where all permissions are FALSE
+// Returns true if all have valid data.
+// mask_on has bits set to true where all permissions are true
+// mask_off has bits set to true where all permissions are false
 // if a bit is off both in mask_on and mask_off, the values differ within
 // the selection.
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::selectGetPerm(U8 which_perm, U32* mask_on, U32* mask_off)
+bool LLSelectMgr::selectGetPerm(U8 which_perm, U32* mask_on, U32* mask_off)
 {
     U32 mask;
     U32 mask_and    = 0xffffffff;
     U32 mask_or     = 0x00000000;
-    BOOL all_valid  = FALSE;
+    bool all_valid  = false;
 
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++)
@@ -3909,11 +3911,11 @@ BOOL LLSelectMgr::selectGetPerm(U8 which_perm, U32* mask_on, U32* mask_off)
 
         if (!node->mValid)
         {
-            all_valid = FALSE;
+            all_valid = false;
             break;
         }
 
-        all_valid = TRUE;
+        all_valid = true;
 
         switch( which_perm )
         {
@@ -3942,26 +3944,26 @@ BOOL LLSelectMgr::selectGetPerm(U8 which_perm, U32* mask_on, U32* mask_off)
 
     if (all_valid)
     {
-        // ...TRUE through all ANDs means all TRUE
+        // ...true through all ANDs means all true
         *mask_on  = mask_and;
 
-        // ...FALSE through all ORs means all FALSE
+        // ...false through all ORs means all false
         *mask_off = ~mask_or;
-        return TRUE;
+        return true;
     }
     else
     {
         *mask_on  = 0;
         *mask_off = 0;
-        return FALSE;
+        return false;
     }
 }
 
 
 
-BOOL LLSelectMgr::selectGetPermissions(LLPermissions& result_perm)
+bool LLSelectMgr::selectGetPermissions(LLPermissions& result_perm)
 {
-    BOOL first = TRUE;
+    bool first = true;
     LLPermissions perm;
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -3969,13 +3971,13 @@ BOOL LLSelectMgr::selectGetPermissions(LLPermissions& result_perm)
         LLSelectNode* node = *iter;
         if (!node->mValid)
         {
-            return FALSE;
+            return false;
         }
 
         if (first)
         {
             perm = *(node->mPermissions);
-            first = FALSE;
+            first = false;
         }
         else
         {
@@ -3985,7 +3987,7 @@ BOOL LLSelectMgr::selectGetPermissions(LLPermissions& result_perm)
 
     result_perm = perm;
 
-    return TRUE;
+    return true;
 }
 
 
@@ -3993,9 +3995,9 @@ void LLSelectMgr::selectDelete()
 {
     S32 deleteable_count = 0;
 
-    BOOL locked_but_deleteable_object = FALSE;
-    BOOL no_copy_but_deleteable_object = FALSE;
-    BOOL all_owned_by_you = TRUE;
+    bool locked_but_deleteable_object = false;
+    bool no_copy_but_deleteable_object = false;
+    bool all_owned_by_you = true;
 
     for (LLObjectSelection::iterator iter = getSelection()->begin();
          iter != getSelection()->end(); iter++)
@@ -4012,15 +4014,15 @@ void LLSelectMgr::selectDelete()
         // Check to see if you can delete objects which are locked.
         if(!obj->permMove())
         {
-            locked_but_deleteable_object = TRUE;
+            locked_but_deleteable_object = true;
         }
         if(!obj->permCopy())
         {
-            no_copy_but_deleteable_object = TRUE;
+            no_copy_but_deleteable_object = true;
         }
         if(!obj->permYouOwner())
         {
-            all_owned_by_you = FALSE;
+            all_owned_by_you = false;
         }
     }
 
@@ -4115,7 +4117,7 @@ bool LLSelectMgr::confirmDelete(const LLSD& notification, const LLSD& response,
             // VEFFECT: Delete Object - one effect for all deletes
             if (LLSelectMgr::getInstance()->mSelectedObjects->mSelectType != SELECT_TYPE_HUD)
             {
-                LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, TRUE);
+                LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, true);
                 effectp->setPositionGlobal( LLSelectMgr::getInstance()->getSelectionCenterGlobal() );
                 effectp->setColor(LLColor4U(gAgent.getEffectColor()));
                 F32 duration = 0.5f;
@@ -4144,11 +4146,11 @@ void LLSelectMgr::selectForceDelete()
         packDeleteHeader,
         packObjectLocalID,
         logNoOp,
-        (void*)TRUE,
+        (void*)true,
         SEND_ONLY_ROOTS);
 }
 
-BOOL LLSelectMgr::selectGetEditMoveLinksetPermissions(bool &move, bool &modify)
+bool LLSelectMgr::selectGetEditMoveLinksetPermissions(bool &move, bool &modify)
 {
     move = true;
     modify = true;
@@ -4163,7 +4165,7 @@ BOOL LLSelectMgr::selectGetEditMoveLinksetPermissions(bool &move, bool &modify)
         {
             move = false;
             modify = false;
-            return FALSE;
+            return false;
         }
 
         LLViewerObject *root_object = object->getRootEdit();
@@ -4178,18 +4180,18 @@ BOOL LLSelectMgr::selectGetEditMoveLinksetPermissions(bool &move, bool &modify)
         modify = modify && object->permModify();
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLSelectMgr::selectGetAggregateSaleInfo(U32 &num_for_sale,
-                                             BOOL &is_for_sale_mixed,
-                                             BOOL &is_sale_price_mixed,
+                                             bool &is_for_sale_mixed,
+                                             bool &is_sale_price_mixed,
                                              S32 &total_sale_price,
                                              S32 &individual_sale_price)
 {
     num_for_sale = 0;
-    is_for_sale_mixed = FALSE;
-    is_sale_price_mixed = FALSE;
+    is_for_sale_mixed = false;
+    is_sale_price_mixed = false;
     total_sale_price = 0;
     individual_sale_price = 0;
 
@@ -4199,21 +4201,21 @@ void LLSelectMgr::selectGetAggregateSaleInfo(U32 &num_for_sale,
         return;
 
     LLSelectNode *node = *(getSelection()->root_begin());
-    const BOOL first_node_for_sale = node->mSaleInfo.isForSale();
+    const bool first_node_for_sale = node->mSaleInfo.isForSale();
     const S32 first_node_sale_price = node->mSaleInfo.getSalePrice();
 
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++)
     {
         LLSelectNode* node = *iter;
-        const BOOL node_for_sale = node->mSaleInfo.isForSale();
+        const bool node_for_sale = node->mSaleInfo.isForSale();
         const S32 node_sale_price = node->mSaleInfo.getSalePrice();
 
         // Set mixed if the fields don't match the first node's fields.
         if (node_for_sale != first_node_for_sale)
-            is_for_sale_mixed = TRUE;
+            is_for_sale_mixed = true;
         if (node_sale_price != first_node_sale_price)
-            is_sale_price_mixed = TRUE;
+            is_sale_price_mixed = true;
 
         if (node_for_sale)
         {
@@ -4225,16 +4227,16 @@ void LLSelectMgr::selectGetAggregateSaleInfo(U32 &num_for_sale,
     individual_sale_price = first_node_sale_price;
     if (is_for_sale_mixed)
     {
-        is_sale_price_mixed = TRUE;
+        is_sale_price_mixed = true;
         individual_sale_price = 0;
     }
 }
 
-// returns TRUE if all nodes are valid. method also stores an
+// returns true if all nodes are valid. method also stores an
 // accumulated sale info.
-BOOL LLSelectMgr::selectGetSaleInfo(LLSaleInfo& result_sale_info)
+bool LLSelectMgr::selectGetSaleInfo(LLSaleInfo& result_sale_info)
 {
-    BOOL first = TRUE;
+    bool first = true;
     LLSaleInfo sale_info;
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -4242,13 +4244,13 @@ BOOL LLSelectMgr::selectGetSaleInfo(LLSaleInfo& result_sale_info)
         LLSelectNode* node = *iter;
         if (!node->mValid)
         {
-            return FALSE;
+            return false;
         }
 
         if (first)
         {
             sale_info = node->mSaleInfo;
-            first = FALSE;
+            first = false;
         }
         else
         {
@@ -4258,12 +4260,12 @@ BOOL LLSelectMgr::selectGetSaleInfo(LLSaleInfo& result_sale_info)
 
     result_sale_info = sale_info;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLSelectMgr::selectGetAggregatePermissions(LLAggregatePermissions& result_perm)
+bool LLSelectMgr::selectGetAggregatePermissions(LLAggregatePermissions& result_perm)
 {
-    BOOL first = TRUE;
+    bool first = true;
     LLAggregatePermissions perm;
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -4271,13 +4273,13 @@ BOOL LLSelectMgr::selectGetAggregatePermissions(LLAggregatePermissions& result_p
         LLSelectNode* node = *iter;
         if (!node->mValid)
         {
-            return FALSE;
+            return false;
         }
 
         if (first)
         {
             perm = node->mAggregatePerm;
-            first = FALSE;
+            first = false;
         }
         else
         {
@@ -4287,12 +4289,12 @@ BOOL LLSelectMgr::selectGetAggregatePermissions(LLAggregatePermissions& result_p
 
     result_perm = perm;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLSelectMgr::selectGetAggregateTexturePermissions(LLAggregatePermissions& result_perm)
+bool LLSelectMgr::selectGetAggregateTexturePermissions(LLAggregatePermissions& result_perm)
 {
-    BOOL first = TRUE;
+    bool first = true;
     LLAggregatePermissions perm;
     for (LLObjectSelection::root_iterator iter = getSelection()->root_begin();
          iter != getSelection()->root_end(); iter++ )
@@ -4300,14 +4302,14 @@ BOOL LLSelectMgr::selectGetAggregateTexturePermissions(LLAggregatePermissions& r
         LLSelectNode* node = *iter;
         if (!node->mValid)
         {
-            return FALSE;
+            return false;
         }
 
         LLAggregatePermissions t_perm = node->getObject()->permYouOwner() ? node->mAggregateTexturePermOwner : node->mAggregateTexturePerm;
         if (first)
         {
             perm = t_perm;
-            first = FALSE;
+            first = false;
         }
         else
         {
@@ -4317,19 +4319,19 @@ BOOL LLSelectMgr::selectGetAggregateTexturePermissions(LLAggregatePermissions& r
 
     result_perm = perm;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLSelectMgr::isMovableAvatarSelected()
+bool LLSelectMgr::isMovableAvatarSelected()
 {
     if (mAllowSelectAvatar && getSelection()->getObjectCount() == 1)
     {
         // nothing but avatar should be selected, so check that
         // there is only one selected object and it is a root
         LLViewerObject* obj = getSelection()->getFirstRootObject();
-        return obj && obj->isAvatar() && getSelection()->getFirstMoveableNode(TRUE);
+        return obj && obj->isAvatar() && getSelection()->getFirstMoveableNode(true);
     }
-    return FALSE;
+    return false;
 }
 
 //--------------------------------------------------------------------
@@ -4345,7 +4347,7 @@ struct LLDuplicateData
     U32         flags;
 };
 
-void LLSelectMgr::selectDuplicate(const LLVector3& offset, BOOL select_copy)
+void LLSelectMgr::selectDuplicate(const LLVector3& offset, bool select_copy)
 {
     if (mSelectedObjects->isAttachment())
     {
@@ -4382,7 +4384,7 @@ void LLSelectMgr::selectDuplicate(const LLVector3& offset, BOOL select_copy)
              iter != getSelection()->root_end(); iter++ )
         {
             LLSelectNode* node = *iter;
-            node->mDuplicated = TRUE;
+            node->mDuplicated = true;
             node->mDuplicatePos = node->getObject()->getPositionGlobal();
             node->mDuplicateRot = node->getObject()->getRotation();
         }
@@ -4467,22 +4469,22 @@ struct LLDuplicateOnRayData
 {
     LLVector3   mRayStartRegion;
     LLVector3   mRayEndRegion;
-    BOOL        mBypassRaycast;
-    BOOL        mRayEndIsIntersection;
+    bool        mBypassRaycast;
+    bool        mRayEndIsIntersection;
     LLUUID      mRayTargetID;
-    BOOL        mCopyCenters;
-    BOOL        mCopyRotates;
+    bool        mCopyCenters;
+    bool        mCopyRotates;
     U32         mFlags;
 };
 
 void LLSelectMgr::selectDuplicateOnRay(const LLVector3 &ray_start_region,
                                        const LLVector3 &ray_end_region,
-                                       BOOL bypass_raycast,
-                                       BOOL ray_end_is_intersection,
+                                       bool bypass_raycast,
+                                       bool ray_end_is_intersection,
                                        const LLUUID &ray_target_id,
-                                       BOOL copy_centers,
-                                       BOOL copy_rotates,
-                                       BOOL select_copy)
+                                       bool copy_centers,
+                                       bool copy_rotates,
+                                       bool select_copy)
 {
     if (mSelectedObjects->isAttachment())
     {
@@ -4604,12 +4606,12 @@ struct LLOwnerData
 {
     LLUUID  owner_id;
     LLUUID  group_id;
-    BOOL    override;
+    bool    override;
 };
 
 void LLSelectMgr::sendOwner(const LLUUID& owner_id,
                             const LLUUID& group_id,
-                            BOOL override)
+                            bool override)
 {
     LLOwnerData data;
 
@@ -4691,16 +4693,16 @@ void LLSelectMgr::packBuyObjectIDs(LLSelectNode* node, void* data)
 struct LLPermData
 {
     U8 mField;
-    BOOL mSet;
+    bool mSet;
     U32 mMask;
-    BOOL mOverride;
+    bool mOverride;
 };
 
 // TODO: Make this able to fail elegantly.
 void LLSelectMgr::selectionSetObjectPermissions(U8 field,
-                                       BOOL set,
+                                       bool set,
                                        U32 mask,
-                                       BOOL override)
+                                       bool override)
 {
     LLPermData data;
 
@@ -4809,7 +4811,7 @@ void LLSelectMgr::convertTransient()
     for (node_it = mSelectedObjects->begin(); node_it != mSelectedObjects->end(); ++node_it)
     {
         LLSelectNode *nodep = *node_it;
-        nodep->setTransient(FALSE);
+        nodep->setTransient(false);
     }
 }
 
@@ -4951,7 +4953,7 @@ void LLSelectMgr::sendAttach(LLObjectSelectionHandle selection_handle, U8 attach
         return;
     }
 
-    BOOL build_mode = LLToolMgr::getInstance()->inEdit();
+    bool build_mode = LLToolMgr::getInstance()->inEdit();
     // Special case: Attach to default location for this object.
     if (0 == attachment_point ||
         get_if_there(gAgentAvatarp->mAttachmentPoints, (S32)attachment_point, (LLViewerJointAttachment*)NULL))
@@ -5185,7 +5187,7 @@ void LLSelectMgr::saveSelectedObjectTextures()
     {
         virtual bool apply(LLSelectNode* node)
         {
-            node->mValid = FALSE;
+            node->mValid = false;
             return true;
         }
     } func;
@@ -5279,9 +5281,9 @@ void LLSelectMgr::saveSelectedObjectTransform(EActionType action_type)
 
 struct LLSelectMgrApplyFlags : public LLSelectedObjectFunctor
 {
-    LLSelectMgrApplyFlags(U32 flags, BOOL state) : mFlags(flags), mState(state) {}
+    LLSelectMgrApplyFlags(U32 flags, bool state) : mFlags(flags), mState(state) {}
     U32 mFlags;
-    BOOL mState;
+    bool mState;
     virtual bool apply(LLViewerObject* object)
     {
         if ( object->permModify())
@@ -5300,19 +5302,19 @@ struct LLSelectMgrApplyFlags : public LLSelectedObjectFunctor
     }
 };
 
-void LLSelectMgr::selectionUpdatePhysics(BOOL physics)
+void LLSelectMgr::selectionUpdatePhysics(bool physics)
 {
     LLSelectMgrApplyFlags func( FLAGS_USE_PHYSICS, physics);
     getSelection()->applyToObjects(&func);
 }
 
-void LLSelectMgr::selectionUpdateTemporary(BOOL is_temporary)
+void LLSelectMgr::selectionUpdateTemporary(bool is_temporary)
 {
     LLSelectMgrApplyFlags func( FLAGS_TEMPORARY_ON_REZ, is_temporary);
     getSelection()->applyToObjects(&func);
 }
 
-void LLSelectMgr::selectionUpdatePhantom(BOOL is_phantom)
+void LLSelectMgr::selectionUpdatePhantom(bool is_phantom)
 {
     LLSelectMgrApplyFlags func( FLAGS_PHANTOM, is_phantom);
     getSelection()->applyToObjects(&func);
@@ -5383,7 +5385,7 @@ void LLSelectMgr::packDuplicateHeader(void* data)
 // static
 void LLSelectMgr::packDeleteHeader(void* userdata)
 {
-    BOOL force = (BOOL)(intptr_t)userdata;
+    bool force = (bool)(intptr_t)userdata;
 
     gMessageSystem->nextBlockFast(_PREHASH_AgentData);
     gMessageSystem->addUUIDFast(_PREHASH_AgentID, gAgent.getID() );
@@ -5597,7 +5599,7 @@ void LLSelectMgr::sendListToRegions(LLObjectSelectionHandle selected_handle,
         {
             if (node->getObject())
             {
-                BOOL is_root = node->getObject()->isRootEdit();
+                bool is_root = node->getObject()->isRootEdit();
                 if ((mRoots && is_root) || (!mRoots && !is_root))
                 {
                     nodes_to_send.push(node);
@@ -5607,8 +5609,8 @@ void LLSelectMgr::sendListToRegions(LLObjectSelectionHandle selected_handle,
         }
     };
     struct push_all  pushall(nodes_to_send);
-    struct push_some pushroots(nodes_to_send, TRUE);
-    struct push_some pushnonroots(nodes_to_send, FALSE);
+    struct push_some pushroots(nodes_to_send, true);
+    struct push_some pushnonroots(nodes_to_send, false);
 
     switch(send_type)
     {
@@ -5865,8 +5867,8 @@ void LLSelectMgr::processObjectProperties(LLMessageSystem* msg, void** user_data
 
             if (save_textures)
             {
-                BOOL can_copy = FALSE;
-                BOOL can_transfer = FALSE;
+                bool can_copy = false;
+                bool can_transfer = false;
 
                 LLAggregatePermissions::EValue value = LLAggregatePermissions::AP_NONE;
                 if(node->getObject()->permYouOwner())
@@ -5874,12 +5876,12 @@ void LLSelectMgr::processObjectProperties(LLMessageSystem* msg, void** user_data
                     value = ag_texture_perms_owner.getValue(PERM_COPY);
                     if (value == LLAggregatePermissions::AP_EMPTY || value == LLAggregatePermissions::AP_ALL)
                     {
-                        can_copy = TRUE;
+                        can_copy = true;
                     }
                     value = ag_texture_perms_owner.getValue(PERM_TRANSFER);
                     if (value == LLAggregatePermissions::AP_EMPTY || value == LLAggregatePermissions::AP_ALL)
                     {
-                        can_transfer = TRUE;
+                        can_transfer = true;
                     }
                 }
                 else
@@ -5887,12 +5889,12 @@ void LLSelectMgr::processObjectProperties(LLMessageSystem* msg, void** user_data
                     value = ag_texture_perms.getValue(PERM_COPY);
                     if (value == LLAggregatePermissions::AP_EMPTY || value == LLAggregatePermissions::AP_ALL)
                     {
-                        can_copy = TRUE;
+                        can_copy = true;
                     }
                     value = ag_texture_perms.getValue(PERM_TRANSFER);
                     if (value == LLAggregatePermissions::AP_EMPTY || value == LLAggregatePermissions::AP_ALL)
                     {
-                        can_transfer = TRUE;
+                        can_transfer = true;
                     }
                 }
 
@@ -5932,7 +5934,7 @@ void LLSelectMgr::processObjectProperties(LLMessageSystem* msg, void** user_data
                 }
             }
 
-            node->mValid = TRUE;
+            node->mValid = true;
             node->mPermissions->init(creator_id, owner_id,
                                      last_owner_id, group_id);
             node->mPermissions->initMasks(base_mask, owner_mask, everyone_mask, group_mask, next_owner_mask);
@@ -6026,7 +6028,7 @@ void LLSelectMgr::processObjectPropertiesFamily(LLMessageSystem* msg, void** use
 
     if (node)
     {
-        node->mValid = TRUE;
+        node->mValid = true;
         node->mPermissions->init(LLUUID::null, owner_id,
                                  last_owner_id, group_id);
         node->mPermissions->initMasks(base_mask, owner_mask, everyone_mask, group_mask, next_owner_mask);
@@ -6043,7 +6045,7 @@ void LLSelectMgr::processObjectPropertiesFamily(LLMessageSystem* msg, void** use
 // static
 void LLSelectMgr::processForceObjectSelect(LLMessageSystem* msg, void**)
 {
-    BOOL reset_list;
+    bool reset_list;
     msg->getBOOL("Header", "ResetList", reset_list);
 
     if (reset_list)
@@ -6088,7 +6090,7 @@ void LLSelectMgr::updateSilhouettes()
 
     if (!mSilhouetteImagep)
     {
-        mSilhouetteImagep = LLViewerTextureManager::getFetchedTextureFromFile("silhouette.j2c", FTT_LOCAL_FILE, TRUE, LLGLTexture::BOOST_UI);
+        mSilhouetteImagep = LLViewerTextureManager::getFetchedTextureFromFile("silhouette.j2c", FTT_LOCAL_FILE, true, LLGLTexture::BOOST_UI);
     }
 
     mHighlightedObjects->cleanupNodes();
@@ -6124,7 +6126,7 @@ void LLSelectMgr::updateSilhouettes()
         // persists from frame to frame to avoid regenerating object silhouettes
         // mHighlightedObjects includes all siblings of rect selected objects
 
-        BOOL select_linked_set = !gSavedSettings.getBOOL("EditLinkedParts");
+        bool select_linked_set = !gSavedSettings.getBOOL("EditLinkedParts");
 
         // generate list of roots from current object selection
         for (std::set<LLPointer<LLViewerObject> >::iterator iter = mRectSelectedObjects.begin();
@@ -6201,12 +6203,12 @@ void LLSelectMgr::updateSilhouettes()
                 continue;
             }
 
-            LLSelectNode* rect_select_root_node = new LLSelectNode(objectp, TRUE);
-            rect_select_root_node->selectAllTEs(TRUE);
+            LLSelectNode* rect_select_root_node = new LLSelectNode(objectp, true);
+            rect_select_root_node->selectAllTEs(true);
 
             if (!select_linked_set)
             {
-                rect_select_root_node->mIndividualSelection = TRUE;
+                rect_select_root_node->mIndividualSelection = true;
             }
             else
             {
@@ -6221,8 +6223,8 @@ void LLSelectMgr::updateSilhouettes()
                         continue;
                     }
 
-                    LLSelectNode* rect_select_node = new LLSelectNode(child_objectp, TRUE);
-                    rect_select_node->selectAllTEs(TRUE);
+                    LLSelectNode* rect_select_node = new LLSelectNode(child_objectp, true);
+                    rect_select_node->selectAllTEs(true);
                     mHighlightedObjects->addNodeAtEnd(rect_select_node);
                 }
             }
@@ -6234,7 +6236,7 @@ void LLSelectMgr::updateSilhouettes()
         num_sils_genned = 0;
 
         // render silhouettes for highlighted objects
-        //BOOL subtracting_from_selection = (gKeyboard->currentMask(TRUE) == MASK_CONTROL);
+        //bool subtracting_from_selection = (gKeyboard->currentMask(true) == MASK_CONTROL);
         for (S32 pass = 0; pass < 2; pass++)
         {
             for (LLObjectSelection::iterator iter = mHighlightedObjects->begin();
@@ -6246,8 +6248,8 @@ void LLSelectMgr::updateSilhouettes()
                     continue;
 
                 // do roots first, then children so that root flags are cleared ASAP
-                BOOL roots_only = (pass == 0);
-                BOOL is_root = objectp->isRootEdit();
+                bool roots_only = (pass == 0);
+                bool is_root = objectp->isRootEdit();
                 if (roots_only != is_root)
                 {
                     continue;
@@ -6321,8 +6323,8 @@ void LLSelectMgr::updateSelectionSilhouette(LLObjectSelectionHandle object_handl
                 if (!objectp)
                     continue;
                 // do roots first, then children so that root flags are cleared ASAP
-                BOOL roots_only = (pass == 0);
-                BOOL is_root = (objectp->isRootEdit());
+                bool roots_only = (pass == 0);
+                bool is_root = (objectp->isRootEdit());
                 if (roots_only != is_root || objectp->mDrawable.isNull())
                 {
                     continue;
@@ -6352,7 +6354,7 @@ void LLSelectMgr::updateSelectionSilhouette(LLObjectSelectionHandle object_handl
         }
     }
 }
-void LLSelectMgr::renderSilhouettes(BOOL for_hud)
+void LLSelectMgr::renderSilhouettes(bool for_hud)
 {
     if (!mRenderSilhouettes || !mRenderHighlightSelections)
     {
@@ -6405,7 +6407,7 @@ void LLSelectMgr::renderSilhouettes(BOOL for_hud)
         gGL.matrixMode(LLRender::MM_MODELVIEW);
         gGL.pushMatrix();
 
-        BOOL is_hud_object = objectp->isHUDAttachment();
+        bool is_hud_object = objectp->isHUDAttachment();
 
         if (!is_hud_object)
         {
@@ -6529,8 +6531,8 @@ void LLSelectMgr::renderSilhouettes(BOOL for_hud)
                     }
                     else if (node->isTransient())
                     {
-                        BOOL oldHidden = LLSelectMgr::sRenderHiddenSelections;
-                        LLSelectMgr::sRenderHiddenSelections = FALSE;
+                        bool oldHidden = LLSelectMgr::sRenderHiddenSelections;
+                        LLSelectMgr::sRenderHiddenSelections = false;
                         node->renderOneSilhouette(sContextSilhouetteColor);
                         LLSelectMgr::sRenderHiddenSelections = oldHidden;
                     }
@@ -6550,7 +6552,7 @@ void LLSelectMgr::renderSilhouettes(BOOL for_hud)
     if (mHighlightedObjects->getNumNodes())
     {
         // render silhouettes for highlighted objects
-        BOOL subtracting_from_selection = (gKeyboard->currentMask(TRUE) == MASK_CONTROL);
+        bool subtracting_from_selection = (gKeyboard->currentMask(true) == MASK_CONTROL);
         for (S32 pass = 0; pass < 2; pass++)
         {
             for (LLObjectSelection::iterator iter = mHighlightedObjects->begin();
@@ -6611,15 +6613,15 @@ void LLSelectMgr::generateSilhouette(LLSelectNode* nodep, const LLVector3& view_
 //
 // Utility classes
 //
-LLSelectNode::LLSelectNode(LLViewerObject* object, BOOL glow)
+LLSelectNode::LLSelectNode(LLViewerObject* object, bool glow)
 :   mObject(object),
-    mIndividualSelection(FALSE),
-    mTransient(FALSE),
-    mValid(FALSE),
+    mIndividualSelection(false),
+    mTransient(false),
+    mValid(false),
     mPermissions(new LLPermissions()),
     mInventorySerial(0),
-    mSilhouetteExists(FALSE),
-    mDuplicated(FALSE),
+    mSilhouetteExists(false),
+    mDuplicated(false),
     mTESelectMask(0),
     mLastTESelected(0),
     mName(LLStringUtil::null),
@@ -6708,13 +6710,13 @@ LLSelectNode::~LLSelectNode()
     mPermissions = NULL;
 }
 
-void LLSelectNode::selectAllTEs(BOOL b)
+void LLSelectNode::selectAllTEs(bool b)
 {
     mTESelectMask = b ? TE_SELECT_MASK_ALL : 0x0;
     mLastTESelected = 0;
 }
 
-void LLSelectNode::selectTE(S32 te_index, BOOL selected)
+void LLSelectNode::selectTE(S32 te_index, bool selected)
 {
     if (te_index < 0 || te_index >= SELECT_MAX_TES)
     {
@@ -6743,11 +6745,11 @@ void LLSelectNode::selectGLTFNode(S32 node_index, S32 primitive_index, bool sele
     mSelectedGLTFPrimitive = primitive_index;
 }
 
-BOOL LLSelectNode::isTESelected(S32 te_index) const
+bool LLSelectNode::isTESelected(S32 te_index) const
 {
     if (te_index < 0 || te_index >= mObject->getNumTEs())
     {
-        return FALSE;
+        return false;
     }
     return (mTESelectMask & (0x1 << te_index)) != 0;
 }
@@ -6890,17 +6892,17 @@ void LLSelectNode::saveTextureScaleRatios(LLRender::eTexIndex index_to_query)
 
 
 // This implementation should be similar to LLTask::allowOperationOnTask
-BOOL LLSelectNode::allowOperationOnNode(PermissionBit op, U64 group_proxy_power) const
+bool LLSelectNode::allowOperationOnNode(PermissionBit op, U64 group_proxy_power) const
 {
     // Extract ownership.
-    BOOL object_is_group_owned = FALSE;
+    bool object_is_group_owned = false;
     LLUUID object_owner_id;
     mPermissions->getOwnership(object_owner_id, object_is_group_owned);
 
     // Operations on invalid or public objects is not allowed.
     if (!mObject || (mObject->isDead()) || !mPermissions->isOwned())
     {
-        return FALSE;
+        return false;
     }
 
     // The transfer permissions can never be given through proxy.
@@ -6910,7 +6912,7 @@ BOOL LLSelectNode::allowOperationOnNode(PermissionBit op, U64 group_proxy_power)
         if ( !object_is_group_owned
             && (gAgent.getID() == object_owner_id) )
         {
-            return TRUE;
+            return true;
         }
         else
         {
@@ -6926,7 +6928,7 @@ BOOL LLSelectNode::allowOperationOnNode(PermissionBit op, U64 group_proxy_power)
         // no proxy allowed.
         if (mObject->isAttachment() && object_owner_id != gAgent.getID())
         {
-            return FALSE;
+            return false;
         }
     }
 
@@ -6939,7 +6941,7 @@ BOOL LLSelectNode::allowOperationOnNode(PermissionBit op, U64 group_proxy_power)
     // Gods can always operate.
     if (gAgent.isGodlike())
     {
-        return TRUE;
+        return true;
     }
 
     // Check if the agent is in the same group as the object.
@@ -6974,7 +6976,7 @@ BOOL LLSelectNode::allowOperationOnNode(PermissionBit op, U64 group_proxy_power)
     if (PERM_OWNER == op)
     {
         // This this was just a check for ownership, we can now return the answer.
-        return (proxy_agent_id == object_owner_id ? TRUE : FALSE);
+        return proxy_agent_id == object_owner_id;
     }
 
     // check permissions to see if the agent can operate
@@ -7011,7 +7013,7 @@ void LLSelectNode::renderOneSilhouette(const LLColor4 &color)
         return;
     }
 
-    BOOL is_hud_object = objectp->isHUDAttachment();
+    bool is_hud_object = objectp->isHUDAttachment();
 
     if (mSilhouetteVertices.size() == 0 || mSilhouetteNormals.size() != mSilhouetteVertices.size())
     {
@@ -7248,7 +7250,7 @@ void LLSelectMgr::updateSelectionCenter()
         // nothing selected, probably grabbing
         // Ignore by setting to avatar origin.
         mSelectionCenterGlobal.clearVec();
-        mShowSelection = FALSE;
+        mShowSelection = false;
         mSelectionBBox = LLBBox();
         resetAgentHUDZoom();
     }
@@ -7262,7 +7264,7 @@ void LLSelectMgr::updateSelectionCenter()
             resetAgentHUDZoom();
         }
 
-        mShowSelection = FALSE;
+        mShowSelection = false;
         LLBBox bbox;
 
         // have stuff selected
@@ -7271,7 +7273,7 @@ void LLSelectMgr::updateSelectionCenter()
 
         // Initialize the bounding box to the root prim, so the BBox orientation
         // matches the root prim's (affecting the orientation of the manipulators).
-        bbox.addBBoxAgent( (mSelectedObjects->getFirstRootObject(TRUE))->getBoundingBoxAgent() );
+        bbox.addBBoxAgent( (mSelectedObjects->getFirstRootObject(true))->getBoundingBoxAgent() );
 
         for (LLObjectSelection::iterator iter = mSelectedObjects->begin();
              iter != mSelectedObjects->end(); iter++)
@@ -7286,7 +7288,7 @@ void LLSelectMgr::updateSelectionCenter()
                 !root->isChild(gAgentAvatarp) && // not the object you're sitting on
                 !object->isAvatar()) // not another avatar
             {
-                mShowSelection = TRUE;
+                mShowSelection = true;
             }
 
             bbox.addBBoxAgent( object->getBoundingBoxAgent() );
@@ -7429,7 +7431,7 @@ LLBBox LLSelectMgr::getBBoxOfSelection() const
 //-----------------------------------------------------------------------------
 // canUndo()
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::canUndo() const
+bool LLSelectMgr::canUndo() const
 {
     // Can edit or can move
     return const_cast<LLSelectMgr*>(this)->mSelectedObjects->getFirstUndoEnabledObject() != NULL; // HACK: casting away constness - MG;
@@ -7440,7 +7442,7 @@ BOOL LLSelectMgr::canUndo() const
 //-----------------------------------------------------------------------------
 void LLSelectMgr::undo()
 {
-    BOOL select_linked_set = !gSavedSettings.getBOOL("EditLinkedParts");
+    bool select_linked_set = !gSavedSettings.getBOOL("EditLinkedParts");
     LLUUID group_id(gAgent.getGroupID());
     sendListToRegions("Undo", packAgentAndSessionAndGroupID, packObjectID, logNoOp, &group_id, select_linked_set ? SEND_ONLY_ROOTS : SEND_CHILDREN_FIRST);
 }
@@ -7448,7 +7450,7 @@ void LLSelectMgr::undo()
 //-----------------------------------------------------------------------------
 // canRedo()
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::canRedo() const
+bool LLSelectMgr::canRedo() const
 {
     return const_cast<LLSelectMgr*>(this)->mSelectedObjects->getFirstEditableObject() != NULL; // HACK: casting away constness - MG
 }
@@ -7458,7 +7460,7 @@ BOOL LLSelectMgr::canRedo() const
 //-----------------------------------------------------------------------------
 void LLSelectMgr::redo()
 {
-    BOOL select_linked_set = !gSavedSettings.getBOOL("EditLinkedParts");
+    bool select_linked_set = !gSavedSettings.getBOOL("EditLinkedParts");
     LLUUID group_id(gAgent.getGroupID());
     sendListToRegions("Redo", packAgentAndSessionAndGroupID, packObjectID, logNoOp, &group_id, select_linked_set ? SEND_ONLY_ROOTS : SEND_CHILDREN_FIRST);
 }
@@ -7466,7 +7468,7 @@ void LLSelectMgr::redo()
 //-----------------------------------------------------------------------------
 // canDoDelete()
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::canDoDelete() const
+bool LLSelectMgr::canDoDelete() const
 {
     bool can_delete = false;
     // This function is "logically const" - it does not change state in
@@ -7497,7 +7499,7 @@ void LLSelectMgr::doDelete()
 //-----------------------------------------------------------------------------
 // canDeselect()
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::canDeselect() const
+bool LLSelectMgr::canDeselect() const
 {
     return !mSelectedObjects->isEmpty();
 }
@@ -7512,7 +7514,7 @@ void LLSelectMgr::deselect()
 //-----------------------------------------------------------------------------
 // canDuplicate()
 //-----------------------------------------------------------------------------
-BOOL LLSelectMgr::canDuplicate() const
+bool LLSelectMgr::canDuplicate() const
 {
     return const_cast<LLSelectMgr*>(this)->mSelectedObjects->getFirstCopyableObject() != NULL; // HACK: casting away constness - MG
 }
@@ -7522,7 +7524,7 @@ BOOL LLSelectMgr::canDuplicate() const
 void LLSelectMgr::duplicate()
 {
     LLVector3 offset(0.5f, 0.5f, 0.f);
-    selectDuplicate(offset, TRUE);
+    selectDuplicate(offset, true);
 }
 
 ESelectType LLSelectMgr::getSelectTypeForObject(LLViewerObject* object)
@@ -7561,17 +7563,17 @@ void LLSelectMgr::validateSelection()
     getSelection()->applyToObjects(&func);
 }
 
-BOOL LLSelectMgr::canSelectObject(LLViewerObject* object, BOOL ignore_select_owned)
+bool LLSelectMgr::canSelectObject(LLViewerObject* object, bool ignore_select_owned)
 {
     // Never select dead objects
     if (!object || object->isDead())
     {
-        return FALSE;
+        return false;
     }
 
     if (mForceSelection)
     {
-        return TRUE;
+        return true;
     }
 
     if(!ignore_select_owned)
@@ -7580,26 +7582,26 @@ BOOL LLSelectMgr::canSelectObject(LLViewerObject* object, BOOL ignore_select_own
                 (gSavedSettings.getBOOL("SelectMovableOnly") && (!object->permMove() ||  object->isPermanentEnforced())))
         {
             // only select my own objects
-            return FALSE;
+            return false;
         }
     }
 
     // Can't select orphans
-    if (object->isOrphaned()) return FALSE;
+    if (object->isOrphaned()) return false;
 
     // Can't select avatars
-    if (object->isAvatar()) return FALSE;
+    if (object->isAvatar()) return false;
 
     // Can't select land
-    if (object->getPCode() == LLViewerObject::LL_VO_SURFACE_PATCH) return FALSE;
+    if (object->getPCode() == LLViewerObject::LL_VO_SURFACE_PATCH) return false;
 
     ESelectType selection_type = getSelectTypeForObject(object);
-    if (mSelectedObjects->getObjectCount() > 0 && mSelectedObjects->mSelectType != selection_type) return FALSE;
+    if (mSelectedObjects->getObjectCount() > 0 && mSelectedObjects->mSelectType != selection_type) return false;
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLSelectMgr::setForceSelection(BOOL force)
+bool LLSelectMgr::setForceSelection(bool force)
 {
     std::swap(mForceSelection,force);
     return force;
@@ -7678,7 +7680,7 @@ void LLObjectSelection::updateEffects()
 
 S32 LLObjectSelection::getNumNodes()
 {
-    return mList.size();
+    return static_cast<S32>(mList.size());
 }
 
 void LLObjectSelection::addNode(LLSelectNode *nodep)
@@ -7733,7 +7735,7 @@ LLSelectNode* LLObjectSelection::findNode(LLViewerObject* objectp)
 //-----------------------------------------------------------------------------
 // isEmpty()
 //-----------------------------------------------------------------------------
-BOOL LLObjectSelection::isEmpty() const
+bool LLObjectSelection::isEmpty() const
 {
     return (mList.size() == 0);
 }
@@ -7745,7 +7747,7 @@ BOOL LLObjectSelection::isEmpty() const
 S32 LLObjectSelection::getObjectCount()
 {
     cleanupNodes();
-    S32 count = mList.size();
+    S32 count = static_cast<S32>(mList.size());
 
     return count;
 }
@@ -8049,7 +8051,7 @@ bool LLObjectSelection::checkAnimatedObjectLinkable()
 
 bool LLObjectSelection::applyToRootObjects(LLSelectedObjectFunctor* func, bool firstonly)
 {
-    bool result = firstonly ? false : true;
+    bool result = !firstonly;
     for (root_iterator iter = root_begin(); iter != root_end(); )
     {
         root_iterator nextiter = iter++;
@@ -8067,7 +8069,7 @@ bool LLObjectSelection::applyToRootObjects(LLSelectedObjectFunctor* func, bool f
 
 bool LLObjectSelection::applyToTEs(LLSelectedTEFunctor* func, bool firstonly)
 {
-    bool result = firstonly ? false : true;
+    bool result = !firstonly;
     for (iterator iter = begin(); iter != end(); )
     {
         iterator nextiter = iter++;
@@ -8093,7 +8095,7 @@ bool LLObjectSelection::applyToTEs(LLSelectedTEFunctor* func, bool firstonly)
 
 bool LLObjectSelection::applyToNodes(LLSelectedNodeFunctor *func, bool firstonly)
 {
-    bool result = firstonly ? false : true;
+    bool result = !firstonly;
     for (iterator iter = begin(); iter != end(); )
     {
         iterator nextiter = iter++;
@@ -8109,7 +8111,7 @@ bool LLObjectSelection::applyToNodes(LLSelectedNodeFunctor *func, bool firstonly
 
 bool LLObjectSelection::applyToRootNodes(LLSelectedNodeFunctor *func, bool firstonly)
 {
-    bool result = firstonly ? false : true;
+    bool result = !firstonly;
     for (root_iterator iter = root_begin(); iter != root_end(); )
     {
         root_iterator nextiter = iter++;
@@ -8123,9 +8125,9 @@ bool LLObjectSelection::applyToRootNodes(LLSelectedNodeFunctor *func, bool first
     return result;
 }
 
-BOOL LLObjectSelection::isMultipleTESelected()
+bool LLObjectSelection::isMultipleTESelected()
 {
-    BOOL te_selected = FALSE;
+    bool te_selected = false;
     // ...all faces
     for (LLObjectSelection::iterator iter = begin();
          iter != end(); iter++)
@@ -8137,19 +8139,19 @@ BOOL LLObjectSelection::isMultipleTESelected()
             {
                 if(te_selected)
                 {
-                    return TRUE;
+                    return true;
                 }
-                te_selected = TRUE;
+                te_selected = true;
             }
         }
     }
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
 // contains()
 //-----------------------------------------------------------------------------
-BOOL LLObjectSelection::contains(LLViewerObject* object)
+bool LLObjectSelection::contains(LLViewerObject* object)
 {
     return findNode(object) != NULL;
 }
@@ -8158,7 +8160,7 @@ BOOL LLObjectSelection::contains(LLViewerObject* object)
 //-----------------------------------------------------------------------------
 // contains()
 //-----------------------------------------------------------------------------
-BOOL LLObjectSelection::contains(LLViewerObject* object, S32 te)
+bool LLObjectSelection::contains(LLViewerObject* object, S32 te)
 {
     if (te == SELECT_ALL_TES)
     {
@@ -8172,10 +8174,10 @@ BOOL LLObjectSelection::contains(LLViewerObject* object, S32 te)
                 // Optimization
                 if (nodep->getTESelectMask() == TE_SELECT_MASK_ALL)
                 {
-                    return TRUE;
+                    return true;
                 }
 
-                BOOL all_selected = TRUE;
+                bool all_selected = true;
                 for (S32 i = 0; i < object->getNumTEs(); i++)
                 {
                     all_selected = all_selected && nodep->isTESelected(i);
@@ -8183,7 +8185,7 @@ BOOL LLObjectSelection::contains(LLViewerObject* object, S32 te)
                 return all_selected;
             }
         }
-        return FALSE;
+        return false;
     }
     else
     {
@@ -8193,15 +8195,15 @@ BOOL LLObjectSelection::contains(LLViewerObject* object, S32 te)
             LLSelectNode* nodep = *iter;
             if (nodep->getObject() == object && nodep->isTESelected(te))
             {
-                return TRUE;
+                return true;
             }
         }
-        return FALSE;
+        return false;
     }
 }
 
-// returns TRUE is any node is currenly worn as an attachment
-BOOL LLObjectSelection::isAttachment()
+// returns true is any node is currenly worn as an attachment
+bool LLObjectSelection::isAttachment()
 {
     return (mSelectType == SELECT_TYPE_ATTACHMENT || mSelectType == SELECT_TYPE_HUD);
 }
@@ -8242,7 +8244,7 @@ LLSelectNode* LLObjectSelection::getFirstNode(LLSelectedNodeFunctor* func)
     return NULL;
 }
 
-LLSelectNode* LLObjectSelection::getFirstRootNode(LLSelectedNodeFunctor* func, BOOL non_root_ok)
+LLSelectNode* LLObjectSelection::getFirstRootNode(LLSelectedNodeFunctor* func, bool non_root_ok)
 {
     for (root_iterator iter = root_begin(); iter != root_end(); ++iter)
     {
@@ -8264,7 +8266,7 @@ LLSelectNode* LLObjectSelection::getFirstRootNode(LLSelectedNodeFunctor* func, B
 //-----------------------------------------------------------------------------
 // getFirstSelectedObject
 //-----------------------------------------------------------------------------
-LLViewerObject* LLObjectSelection::getFirstSelectedObject(LLSelectedNodeFunctor* func, BOOL get_parent)
+LLViewerObject* LLObjectSelection::getFirstSelectedObject(LLSelectedNodeFunctor* func, bool get_parent)
 {
     LLSelectNode* res = getFirstNode(func);
     if (res && get_parent)
@@ -8290,7 +8292,7 @@ LLViewerObject* LLObjectSelection::getFirstObject()
 //-----------------------------------------------------------------------------
 // getFirstRootObject()
 //-----------------------------------------------------------------------------
-LLViewerObject* LLObjectSelection::getFirstRootObject(BOOL non_root_ok)
+LLViewerObject* LLObjectSelection::getFirstRootObject(bool non_root_ok)
 {
     LLSelectNode* res = getFirstRootNode(NULL, non_root_ok);
     return res ? res->getObject() : NULL;
@@ -8299,7 +8301,7 @@ LLViewerObject* LLObjectSelection::getFirstRootObject(BOOL non_root_ok)
 //-----------------------------------------------------------------------------
 // getFirstMoveableNode()
 //-----------------------------------------------------------------------------
-LLSelectNode* LLObjectSelection::getFirstMoveableNode(BOOL get_root_first)
+LLSelectNode* LLObjectSelection::getFirstMoveableNode(bool get_root_first)
 {
     struct f : public LLSelectedNodeFunctor
     {
@@ -8309,14 +8311,14 @@ LLSelectNode* LLObjectSelection::getFirstMoveableNode(BOOL get_root_first)
             return obj && obj->permMove() && !obj->isPermanentEnforced();
         }
     } func;
-    LLSelectNode* res = get_root_first ? getFirstRootNode(&func, TRUE) : getFirstNode(&func);
+    LLSelectNode* res = get_root_first ? getFirstRootNode(&func, true) : getFirstNode(&func);
     return res;
 }
 
 //-----------------------------------------------------------------------------
 // getFirstCopyableObject()
 //-----------------------------------------------------------------------------
-LLViewerObject* LLObjectSelection::getFirstCopyableObject(BOOL get_parent)
+LLViewerObject* LLObjectSelection::getFirstCopyableObject(bool get_parent)
 {
     struct f : public LLSelectedNodeFunctor
     {
@@ -8364,7 +8366,7 @@ LLViewerObject* LLObjectSelection::getFirstDeleteableObject()
 //-----------------------------------------------------------------------------
 // getFirstEditableObject()
 //-----------------------------------------------------------------------------
-LLViewerObject* LLObjectSelection::getFirstEditableObject(BOOL get_parent)
+LLViewerObject* LLObjectSelection::getFirstEditableObject(bool get_parent)
 {
     struct f : public LLSelectedNodeFunctor
     {
@@ -8380,7 +8382,7 @@ LLViewerObject* LLObjectSelection::getFirstEditableObject(BOOL get_parent)
 //-----------------------------------------------------------------------------
 // getFirstMoveableObject()
 //-----------------------------------------------------------------------------
-LLViewerObject* LLObjectSelection::getFirstMoveableObject(BOOL get_parent)
+LLViewerObject* LLObjectSelection::getFirstMoveableObject(bool get_parent)
 {
     struct f : public LLSelectedNodeFunctor
     {
@@ -8396,7 +8398,7 @@ LLViewerObject* LLObjectSelection::getFirstMoveableObject(BOOL get_parent)
 //-----------------------------------------------------------------------------
 // getFirstUndoEnabledObject()
 //-----------------------------------------------------------------------------
-LLViewerObject* LLObjectSelection::getFirstUndoEnabledObject(BOOL get_parent)
+LLViewerObject* LLObjectSelection::getFirstUndoEnabledObject(bool get_parent)
 {
     struct f : public LLSelectedNodeFunctor
     {
@@ -8484,7 +8486,7 @@ bool LLSelectMgr::selectionMove(const LLVector3& displ,
 
             if (enable_rot)
             {
-                int children_count = obj->getChildren().size();
+                auto children_count = obj->getChildren().size();
                 if (obj_count > 1 && children_count > 0)
                 {
                     // for linked sets, rotate around the group center
@@ -8530,7 +8532,7 @@ bool LLSelectMgr::selectionMove(const LLVector3& displ,
 
         if (enable_pos && enable_rot && obj->mDrawable.notNull())
         {
-            gPipeline.markMoved(obj->mDrawable, TRUE);
+            gPipeline.markMoved(obj->mDrawable, true);
         }
     }
 
diff --git a/indra/newview/llselectmgr.h b/indra/newview/llselectmgr.h
index 02c74d0ab0..0456b109d7 100644
--- a/indra/newview/llselectmgr.h
+++ b/indra/newview/llselectmgr.h
@@ -87,7 +87,7 @@ const S32 SELECT_ALL_TES = -1;
 const S32 SELECT_MAX_TES = 32;
 
 // Do something to all objects in the selection manager.
-// The BOOL return value can be used to indicate if all
+// The bool return value can be used to indicate if all
 // objects are identical (gathering information) or if
 // the operation was successful.
 struct LLSelectedObjectFunctor
@@ -97,7 +97,7 @@ struct LLSelectedObjectFunctor
 };
 
 // Do something to all select nodes in the selection manager.
-// The BOOL return value can be used to indicate if all
+// The bool return value can be used to indicate if all
 // objects are identical (gathering information) or if
 // the operation was successful.
 struct LLSelectedNodeFunctor
@@ -169,21 +169,21 @@ const S32 TE_SELECT_MASK_ALL = 0xFFFFFFFF;
 class LLSelectNode
 {
 public:
-    LLSelectNode(LLViewerObject* object, BOOL do_glow);
+    LLSelectNode(LLViewerObject* object, bool do_glow);
     LLSelectNode(const LLSelectNode& nodep);
     ~LLSelectNode();
 
-    void selectAllTEs(BOOL b);
-    void selectTE(S32 te_index, BOOL selected);
+    void selectAllTEs(bool b);
+    void selectTE(S32 te_index, bool selected);
     void selectGLTFNode(S32 node_index, S32 primitive_index, bool selected);
-    BOOL isTESelected(S32 te_index) const;
+    bool isTESelected(S32 te_index) const;
     bool hasSelectedTE() const { return TE_SELECT_MASK_ALL & mTESelectMask; }
     S32 getLastSelectedTE() const;
     S32 getLastOperatedTE() const { return mLastTESelected; }
     S32 getTESelectMask() { return mTESelectMask; }
     void renderOneSilhouette(const LLColor4 &color);
-    void setTransient(BOOL transient) { mTransient = transient; }
-    BOOL isTransient() const { return mTransient; }
+    void setTransient(bool transient) { mTransient = transient; }
+    bool isTransient() const { return mTransient; }
     LLViewerObject* getObject();
     void setObject(LLViewerObject* object);
     // *NOTE: invalidate stored textures and colors when # faces change
@@ -200,13 +200,13 @@ public:
     // overrides get applied in live material editor
     void saveGLTFMaterials(const uuid_vec_t& materials, const gltf_materials_vec_t& override_materials);
 
-    BOOL allowOperationOnNode(PermissionBit op, U64 group_proxy_power) const;
+    bool allowOperationOnNode(PermissionBit op, U64 group_proxy_power) const;
 
 public:
-    BOOL            mIndividualSelection;       // For root objects and objects individually selected
+    bool            mIndividualSelection;       // For root objects and objects individually selected
 
-    BOOL            mTransient;
-    BOOL            mValid;             // is extra information valid?
+    bool            mTransient;
+    bool            mValid;             // is extra information valid?
     LLPermissions*  mPermissions;
     LLSaleInfo      mSaleInfo;
     LLAggregatePermissions mAggregatePerm;
@@ -224,7 +224,7 @@ public:
     LLVector3       mLastScale;
     LLQuaternion    mSavedRotation;         // for interactively modifying object rotation
     LLQuaternion    mLastRotation;
-    BOOL            mDuplicated;
+    bool            mDuplicated;
     LLVector3d      mDuplicatePos;
     LLQuaternion    mDuplicateRot;
     LLUUID          mItemID;
@@ -241,7 +241,7 @@ public:
     std::vector<LLVector3>  mTextureScaleRatios;
     std::vector<LLVector3>  mSilhouetteVertices;    // array of vertices to render silhouette of object
     std::vector<LLVector3>  mSilhouetteNormals; // array of normals to render silhouette of object
-    BOOL                    mSilhouetteExists;  // need to generate silhouette?
+    bool                    mSilhouetteExists;  // need to generate silhouette?
     S32             mSelectedGLTFNode = -1;
     S32             mSelectedGLTFPrimitive = -1;
 
@@ -316,21 +316,21 @@ public:
 
     void updateEffects();
 
-    BOOL isEmpty() const;
+    bool isEmpty() const;
 
     LLSelectNode*   getFirstNode(LLSelectedNodeFunctor* func = NULL);
-    LLSelectNode*   getFirstRootNode(LLSelectedNodeFunctor* func = NULL, BOOL non_root_ok = FALSE);
-    LLViewerObject* getFirstSelectedObject(LLSelectedNodeFunctor* func, BOOL get_parent = FALSE);
+    LLSelectNode*   getFirstRootNode(LLSelectedNodeFunctor* func = NULL, bool non_root_ok = false);
+    LLViewerObject* getFirstSelectedObject(LLSelectedNodeFunctor* func, bool get_parent = false);
     LLViewerObject* getFirstObject();
-    LLViewerObject* getFirstRootObject(BOOL non_root_ok = FALSE);
+    LLViewerObject* getFirstRootObject(bool non_root_ok = false);
 
-    LLSelectNode*   getFirstMoveableNode(BOOL get_root_first = FALSE);
+    LLSelectNode*   getFirstMoveableNode(bool get_root_first = false);
 
-    LLViewerObject* getFirstEditableObject(BOOL get_parent = FALSE);
-    LLViewerObject* getFirstCopyableObject(BOOL get_parent = FALSE);
+    LLViewerObject* getFirstEditableObject(bool get_parent = false);
+    LLViewerObject* getFirstCopyableObject(bool get_parent = false);
     LLViewerObject* getFirstDeleteableObject();
-    LLViewerObject* getFirstMoveableObject(BOOL get_parent = FALSE);
-    LLViewerObject* getFirstUndoEnabledObject(BOOL get_parent = FALSE);
+    LLViewerObject* getFirstMoveableObject(bool get_parent = false);
+    LLViewerObject* getFirstUndoEnabledObject(bool get_parent = false);
 
     /// Return the object that lead to this selection, possible a child
     LLViewerObject* getPrimaryObject() { return mPrimaryObject; }
@@ -356,19 +356,19 @@ public:
     S32 getTECount();
     S32 getRootObjectCount();
 
-    BOOL isMultipleTESelected();
-    BOOL contains(LLViewerObject* object);
-    BOOL contains(LLViewerObject* object, S32 te);
+    bool isMultipleTESelected();
+    bool contains(LLViewerObject* object);
+    bool contains(LLViewerObject* object, S32 te);
 
-    // returns TRUE is any node is currenly worn as an attachment
-    BOOL isAttachment();
+    // returns true is any node is currenly worn as an attachment
+    bool isAttachment();
 
     bool checkAnimatedObjectEstTris();
     bool checkAnimatedObjectLinkable();
 
     // Apply functors to various subsets of the selected objects
-    // If firstonly is FALSE, returns the AND of all apply() calls.
-    // Else returns TRUE immediately if any apply() call succeeds (i.e. OR with early exit)
+    // If firstonly is false, returns the AND of all apply() calls.
+    // Else returns true immediately if any apply() call succeeds (i.e. OR with early exit)
     bool applyToRootObjects(LLSelectedObjectFunctor* func, bool firstonly = false);
     bool applyToObjects(LLSelectedObjectFunctor* func);
     bool applyToTEs(LLSelectedTEFunctor* func, bool firstonly = false);
@@ -438,9 +438,9 @@ private:
 class LLSelectMgr : public LLEditMenuHandler, public LLSimpleton<LLSelectMgr>
 {
 public:
-    static BOOL                 sRectSelectInclusive;   // do we need to surround an object to pick it?
-    static BOOL                 sRenderHiddenSelections;    // do we show selection silhouettes that are occluded?
-    static BOOL                 sRenderLightRadius; // do we show the radius of selected lights?
+    static bool                 sRectSelectInclusive;   // do we need to surround an object to pick it?
+    static bool                 sRenderHiddenSelections;    // do we show selection silhouettes that are occluded?
+    static bool                 sRenderLightRadius; // do we show the radius of selected lights?
 
     static F32                  sHighlightThickness;
     static F32                  sHighlightUScale;
@@ -468,20 +468,20 @@ public:
     static void cleanupGlobals();
 
     // LLEditMenuHandler interface
-    virtual BOOL canUndo() const;
+    virtual bool canUndo() const;
     virtual void undo();
 
-    virtual BOOL canRedo() const;
+    virtual bool canRedo() const;
     virtual void redo();
 
-    virtual BOOL canDoDelete() const;
+    virtual bool canDoDelete() const;
     virtual void doDelete();
 
     virtual void deselect();
-    virtual BOOL canDeselect() const;
+    virtual bool canDeselect() const;
 
     virtual void duplicate();
-    virtual BOOL canDuplicate() const;
+    virtual bool canDuplicate() const;
 
     void clearSelections();
     void update();
@@ -520,7 +520,7 @@ public:
 
 
     // Returns the previous value of mForceSelection
-    BOOL setForceSelection(BOOL force);
+    bool setForceSelection(bool force);
 
     ////////////////////////////////////////////////////////////////
     // Selection methods
@@ -535,13 +535,13 @@ public:
     //
     // *NOTE: You must hold on to the object selection handle, otherwise
     // the objects will be automatically deselected in 1 frame.
-    LLObjectSelectionHandle selectObjectAndFamily(LLViewerObject* object, BOOL add_to_end = FALSE, BOOL ignore_select_owned = FALSE);
+    LLObjectSelectionHandle selectObjectAndFamily(LLViewerObject* object, bool add_to_end = false, bool ignore_select_owned = false);
 
     // For when you want just a child object.
     LLObjectSelectionHandle selectObjectOnly(LLViewerObject* object, S32 face = SELECT_ALL_TES, S32 gltf_node = -1, S32 gltf_primitive = -1);
 
     // Same as above, but takes a list of objects.  Used by rectangle select.
-    LLObjectSelectionHandle selectObjectAndFamily(const std::vector<LLViewerObject*>& object_list, BOOL send_to_sim = TRUE);
+    LLObjectSelectionHandle selectObjectAndFamily(const std::vector<LLViewerObject*>& object_list, bool send_to_sim = true);
 
     // converts all objects currently highlighted to a selection, and returns it
     LLObjectSelectionHandle selectHighlightedObjects();
@@ -558,8 +558,8 @@ public:
     // Remove
     ////////////////////////////////////////////////////////////////
 
-    void deselectObjectOnly(LLViewerObject* object, BOOL send_to_sim = TRUE);
-    void deselectObjectAndFamily(LLViewerObject* object, BOOL send_to_sim = TRUE, BOOL include_entire_object = FALSE);
+    void deselectObjectOnly(LLViewerObject* object, bool send_to_sim = true);
+    void deselectObjectAndFamily(LLViewerObject* object, bool send_to_sim = true, bool include_entire_object = false);
 
     // Send deselect messages to simulator, then clear the list
     void deselectAll();
@@ -578,7 +578,7 @@ public:
     void unhighlightObjectAndFamily(LLViewerObject *objectp);
     void unhighlightAll();
 
-    BOOL removeObjectFromSelections(const LLUUID &id);
+    bool removeObjectFromSelections(const LLUUID &id);
 
     ////////////////////////////////////////////////////////////////
     // Selection editing
@@ -610,10 +610,10 @@ public:
     EGridMode       getGridMode() { return mGridMode; }
     void            getGrid(LLVector3& origin, LLQuaternion& rotation, LLVector3 &scale, bool for_snap_guides = false);
 
-    BOOL getTEMode() const { return mTEMode; }
-    void setTEMode(BOOL b) { mTEMode = b; }
+    bool getTEMode() const { return mTEMode; }
+    void setTEMode(bool b) { mTEMode = b; }
 
-    BOOL shouldShowSelection() const { return mShowSelection; }
+    bool shouldShowSelection() const { return mShowSelection; }
 
     LLBBox getBBoxOfSelection() const;
     LLBBox getSavedBBoxOfSelection() const { return mSavedSelectionBBox; }
@@ -622,8 +622,8 @@ public:
     void cleanup();
 
     void updateSilhouettes();
-    void renderSilhouettes(BOOL for_hud);
-    void enableSilhouette(BOOL enable) { mRenderSilhouettes = enable; }
+    void renderSilhouettes(bool for_hud);
+    void enableSilhouette(bool enable) { mRenderSilhouettes = enable; }
 
     ////////////////////////////////////////////////////////////////
     // Utility functions that operate on the current selection
@@ -633,15 +633,15 @@ public:
     void saveSelectedShinyColors();
     void saveSelectedObjectTextures();
 
-    void selectionUpdatePhysics(BOOL use_physics);
-    void selectionUpdateTemporary(BOOL is_temporary);
-    void selectionUpdatePhantom(BOOL is_ghost);
+    void selectionUpdatePhysics(bool use_physics);
+    void selectionUpdateTemporary(bool is_temporary);
+    void selectionUpdatePhantom(bool is_ghost);
     void selectionDump();
 
-    BOOL selectionAllPCode(LLPCode code);       // all objects have this PCode
-    BOOL selectionGetClickAction(U8 *out_action);
+    bool selectionAllPCode(LLPCode code);       // all objects have this PCode
+    bool selectionGetClickAction(U8 *out_action);
     bool selectionGetIncludeInSearch(bool* include_in_search_out); // true if all selected objects have same
-    BOOL selectionGetGlow(F32 *glow);
+    bool selectionGetGlow(F32 *glow);
 
     void selectionSetPhysicsType(U8 type);
     void selectionSetGravity(F32 gravity);
@@ -656,7 +656,7 @@ public:
     void selectionSetAlphaOnly(const F32 alpha); // Set only the alpha channel
     void selectionRevertColors();
     void selectionRevertShinyColors();
-    BOOL selectionRevertTextures();
+    bool selectionRevertTextures();
     void selectionRevertGLTFMaterials();
     void selectionSetBumpmap( U8 bumpmap, const LLUUID &image_id );
     void selectionSetTexGen( U8 texgen );
@@ -669,14 +669,14 @@ public:
     void selectionSetMaterialParams(LLSelectedTEMaterialFunctor* material_func, int specific_te = -1);
     void selectionRemoveMaterial();
 
-    void selectionSetObjectPermissions(U8 perm_field, BOOL set, U32 perm_mask, BOOL override = FALSE);
+    void selectionSetObjectPermissions(U8 perm_field, bool set, U32 perm_mask, bool override = false);
     void selectionSetObjectName(const std::string& name);
     void selectionSetObjectDescription(const std::string& desc);
     void selectionSetObjectCategory(const LLCategory& category);
     void selectionSetObjectSaleInfo(const LLSaleInfo& sale_info);
 
     void selectionTexScaleAutofit(F32 repeats_per_meter);
-    void adjustTexturesByScale(BOOL send_to_sim, BOOL stretch);
+    void adjustTexturesByScale(bool send_to_sim, bool stretch);
 
     bool selectionMove(const LLVector3& displ, F32 rx, F32 ry, F32 rz,
                        U32 update_type);
@@ -688,116 +688,116 @@ public:
     // will make sure all selected object meet current criteria, or deselect them otherwise
     void validateSelection();
 
-    // returns TRUE if it is possible to select this object
-    BOOL canSelectObject(LLViewerObject* object, BOOL ignore_select_owned = FALSE);
+    // returns true if it is possible to select this object
+    bool canSelectObject(LLViewerObject* object, bool ignore_select_owned = false);
 
-    // Returns TRUE if the viewer has information on all selected objects
-    BOOL selectGetAllRootsValid();
-    BOOL selectGetAllValid();
-    BOOL selectGetAllValidAndObjectsFound();
+    // Returns true if the viewer has information on all selected objects
+    bool selectGetAllRootsValid();
+    bool selectGetAllValid();
+    bool selectGetAllValidAndObjectsFound();
 
-    // returns TRUE if you can modify all selected objects.
-    BOOL selectGetRootsModify();
-    BOOL selectGetModify();
+    // returns true if you can modify all selected objects.
+    bool selectGetRootsModify();
+    bool selectGetModify();
 
-    // returns TRUE if all objects are in same region
-    BOOL selectGetSameRegion();
+    // returns true if all objects are in same region
+    bool selectGetSameRegion();
 
-    // returns TRUE if is all objects are non-permanent-enforced
-    BOOL selectGetRootsNonPermanentEnforced();
-    BOOL selectGetNonPermanentEnforced();
+    // returns true if is all objects are non-permanent-enforced
+    bool selectGetRootsNonPermanentEnforced();
+    bool selectGetNonPermanentEnforced();
 
-    // returns TRUE if is all objects are permanent
-    BOOL selectGetRootsPermanent();
-    BOOL selectGetPermanent();
+    // returns true if is all objects are permanent
+    bool selectGetRootsPermanent();
+    bool selectGetPermanent();
 
-    // returns TRUE if is all objects are character
-    BOOL selectGetRootsCharacter();
-    BOOL selectGetCharacter();
+    // returns true if is all objects are character
+    bool selectGetRootsCharacter();
+    bool selectGetCharacter();
 
-    // returns TRUE if is all objects are not permanent
-    BOOL selectGetRootsNonPathfinding();
-    BOOL selectGetNonPathfinding();
+    // returns true if is all objects are not permanent
+    bool selectGetRootsNonPathfinding();
+    bool selectGetNonPathfinding();
 
-    // returns TRUE if is all objects are not permanent
-    BOOL selectGetRootsNonPermanent();
-    BOOL selectGetNonPermanent();
+    // returns true if is all objects are not permanent
+    bool selectGetRootsNonPermanent();
+    bool selectGetNonPermanent();
 
-    // returns TRUE if is all objects are not character
-    BOOL selectGetRootsNonCharacter();
-    BOOL selectGetNonCharacter();
+    // returns true if is all objects are not character
+    bool selectGetRootsNonCharacter();
+    bool selectGetNonCharacter();
 
-    BOOL selectGetEditableLinksets();
-    BOOL selectGetViewableCharacters();
+    bool selectGetEditableLinksets();
+    bool selectGetViewableCharacters();
 
-    // returns TRUE if selected objects can be transferred.
-    BOOL selectGetRootsTransfer();
+    // returns true if selected objects can be transferred.
+    bool selectGetRootsTransfer();
 
-    // returns TRUE if selected objects can be copied.
-    BOOL selectGetRootsCopy();
+    // returns true if selected objects can be copied.
+    bool selectGetRootsCopy();
 
-    BOOL selectGetCreator(LLUUID& id, std::string& name);                   // TRUE if all have same creator, returns id
-    BOOL selectGetOwner(LLUUID& id, std::string& name);                 // TRUE if all objects have same owner, returns id
-    BOOL selectGetLastOwner(LLUUID& id, std::string& name);             // TRUE if all objects have same owner, returns id
+    bool selectGetCreator(LLUUID& id, std::string& name);                   // true if all have same creator, returns id
+    bool selectGetOwner(LLUUID& id, std::string& name);                 // true if all objects have same owner, returns id
+    bool selectGetLastOwner(LLUUID& id, std::string& name);             // true if all objects have same owner, returns id
 
-    // returns TRUE if all are the same. id is stuffed with
+    // returns true if all are the same. id is stuffed with
     // the value found if available.
-    BOOL selectGetGroup(LLUUID& id);
-    BOOL selectGetPerm( U8 which_perm, U32* mask_on, U32* mask_off);    // TRUE if all have data, returns two masks, each indicating which bits are all on and all off
+    bool selectGetGroup(LLUUID& id);
+    bool selectGetPerm( U8 which_perm, U32* mask_on, U32* mask_off);    // true if all have data, returns two masks, each indicating which bits are all on and all off
 
-    BOOL selectIsGroupOwned();                                          // TRUE if all root objects have valid data and are group owned.
+    bool selectIsGroupOwned();                                          // true if all root objects have valid data and are group owned.
 
-    // returns TRUE if all the nodes are valid. Accumulates
+    // returns true if all the nodes are valid. Accumulates
     // permissions in the parameter.
-    BOOL selectGetPermissions(LLPermissions& perm);
+    bool selectGetPermissions(LLPermissions& perm);
 
-    // returns TRUE if all the nodes are valid. Depends onto "edit linked" state
+    // returns true if all the nodes are valid. Depends onto "edit linked" state
     // Children in linksets are a bit special - they require not only move permission
     // but also modify if "edit linked" is set, since you move them relative to parent
-    BOOL selectGetEditMoveLinksetPermissions(bool &move, bool &modify);
+    bool selectGetEditMoveLinksetPermissions(bool &move, bool &modify);
 
     // Get a bunch of useful sale information for the object(s) selected.
     // "_mixed" is true if not all objects have the same setting.
     void selectGetAggregateSaleInfo(U32 &num_for_sale,
-                                    BOOL &is_for_sale_mixed,
-                                    BOOL &is_sale_price_mixed,
+                                    bool &is_for_sale_mixed,
+                                    bool &is_sale_price_mixed,
                                     S32 &total_sale_price,
                                     S32 &individual_sale_price);
 
-    // returns TRUE if all nodes are valid.
-    BOOL selectGetCategory(LLCategory& category);
+    // returns true if all nodes are valid.
+    bool selectGetCategory(LLCategory& category);
 
-    // returns TRUE if all nodes are valid. method also stores an
+    // returns true if all nodes are valid. method also stores an
     // accumulated sale info.
-    BOOL selectGetSaleInfo(LLSaleInfo& sale_info);
+    bool selectGetSaleInfo(LLSaleInfo& sale_info);
 
-    // returns TRUE if all nodes are valid. fills passed in object
+    // returns true if all nodes are valid. fills passed in object
     // with the aggregate permissions of the selection.
-    BOOL selectGetAggregatePermissions(LLAggregatePermissions& ag_perm);
+    bool selectGetAggregatePermissions(LLAggregatePermissions& ag_perm);
 
-    // returns TRUE if all nodes are valid. fills passed in object
+    // returns true if all nodes are valid. fills passed in object
     // with the aggregate permissions for texture inventory items of the selection.
-    BOOL selectGetAggregateTexturePermissions(LLAggregatePermissions& ag_perm);
+    bool selectGetAggregateTexturePermissions(LLAggregatePermissions& ag_perm);
 
     LLPermissions* findObjectPermissions(const LLViewerObject* object);
 
-    BOOL isMovableAvatarSelected();
+    bool isMovableAvatarSelected();
 
     void selectDelete();                            // Delete on simulator
     void selectForceDelete();           // just delete, no into trash
-    void selectDuplicate(const LLVector3& offset, BOOL select_copy);    // Duplicate on simulator
+    void selectDuplicate(const LLVector3& offset, bool select_copy);    // Duplicate on simulator
     void repeatDuplicate();
     void selectDuplicateOnRay(const LLVector3 &ray_start_region,
                                 const LLVector3 &ray_end_region,
-                                BOOL bypass_raycast,
-                                BOOL ray_end_is_intersection,
+                                bool bypass_raycast,
+                                bool ray_end_is_intersection,
                                 const LLUUID &ray_target_id,
-                                BOOL copy_centers,
-                                BOOL copy_rotates,
-                                BOOL select_copy);
+                                bool copy_centers,
+                                bool copy_rotates,
+                                bool select_copy);
 
     void sendMultipleUpdate(U32 type);  // Position, rotation, scale all in one
-    void sendOwner(const LLUUID& owner_id, const LLUUID& group_id, BOOL override = FALSE);
+    void sendOwner(const LLUUID& owner_id, const LLUUID& group_id, bool override = false);
     void sendGroup(const LLUUID& group_id);
 
     // Category ID is the UUID of the folder you want to contain the purchase.
@@ -836,16 +836,16 @@ public:
 
     // Internal list maintenance functions. TODO: Make these private!
     void remove(std::vector<LLViewerObject*>& objects);
-    void remove(LLViewerObject* object, S32 te = SELECT_ALL_TES, BOOL undoable = TRUE);
+    void remove(LLViewerObject* object, S32 te = SELECT_ALL_TES, bool undoable = true);
     void removeAll();
-    void addAsIndividual(LLViewerObject* object, S32 te = SELECT_ALL_TES, BOOL undoable = TRUE, S32 gltf_node = -1, S32 gltf_primitive = -1);
+    void addAsIndividual(LLViewerObject* object, S32 te = SELECT_ALL_TES, bool undoable = true, S32 gltf_node = -1, S32 gltf_primitive = -1);
     void promoteSelectionToRoot();
     void demoteSelectionToIndividuals();
 
 private:
     void convertTransient(); // converts temporarily selected objects to full-fledged selections
     ESelectType getSelectTypeForObject(LLViewerObject* object);
-    void addAsFamily(std::vector<LLViewerObject*>& objects, BOOL add_to_end = FALSE);
+    void addAsFamily(std::vector<LLViewerObject*>& objects, bool add_to_end = false);
     void generateSilhouette(LLSelectNode *nodep, const LLVector3& view_point);
     void updateSelectionSilhouette(LLObjectSelectionHandle object_handle, S32& num_sils_genned, std::vector<LLViewerObject*>& changed_objects);
     // Send one message to each region containing an object on selection list.
@@ -922,19 +922,19 @@ private:
     LLVector3               mGridScale;
     EGridMode               mGridMode;
 
-    BOOL                    mTEMode;            // render te
+    bool                    mTEMode;            // render te
     LLRender::eTexIndex mTextureChannel; // diff, norm, or spec, depending on UI editing mode
     LLVector3d              mSelectionCenterGlobal;
     LLBBox                  mSelectionBBox;
 
     LLVector3d              mLastSentSelectionCenterGlobal;
-    BOOL                    mShowSelection; // do we send the selection center name value and do we animate this selection?
+    bool                    mShowSelection; // do we send the selection center name value and do we animate this selection?
     LLVector3d              mLastCameraPos;     // camera position from last generation of selection silhouette
-    BOOL                    mRenderSilhouettes; // do we render the silhouette
+    bool                    mRenderSilhouettes; // do we render the silhouette
     LLBBox                  mSavedSelectionBBox;
 
     LLFrameTimer            mEffectsTimer;
-    BOOL                    mForceSelection;
+    bool                    mForceSelection;
 
     std::vector<LLAnimPauseRequest> mPauseRequests;
 };
@@ -955,7 +955,7 @@ template <typename T> bool LLObjectSelection::getSelectedTEValue(LLSelectedTEGet
     T selected_value = T();
 
     // Now iterate through all TEs to test for sameness
-    bool identical = TRUE;
+    bool identical = true;
     for (iterator iter = begin(); iter != end(); iter++)
     {
         LLSelectNode* node = *iter;
@@ -1026,7 +1026,7 @@ template <typename T> bool LLObjectSelection::isMultipleTEValue(LLSelectedTEGetF
     T selected_value = T();
 
     // Now iterate through all TEs to test for sameness
-    bool unique = TRUE;
+    bool unique = true;
     for (iterator iter = begin(); iter != end(); iter++)
     {
         LLSelectNode* node = *iter;
diff --git a/indra/newview/llsetkeybinddialog.cpp b/indra/newview/llsetkeybinddialog.cpp
index dbab7e53b6..e172e15a0e 100644
--- a/indra/newview/llsetkeybinddialog.cpp
+++ b/indra/newview/llsetkeybinddialog.cpp
@@ -1,25 +1,25 @@
-/** 
+/**
  * @file llsetkeybinddialog.cpp
  * @brief LLSetKeyBindDialog class implementation.
  *
  * $LicenseInfo:firstyear=2019&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2019, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -53,11 +53,11 @@ public:
     virtual ~Updater(){}
 
 protected:
-    BOOL tick()
+    bool tick()
     {
         mCallback(mMask);
         // Deletes itseft after execution
-        return TRUE;
+        return true;
     }
 
 private:
@@ -85,19 +85,19 @@ LLSetKeyBindDialog::~LLSetKeyBindDialog()
 }
 
 //virtual
-BOOL LLSetKeyBindDialog::postBuild()
+bool LLSetKeyBindDialog::postBuild()
 {
     childSetAction("SetEmpty", onBlank, this);
     childSetAction("Default", onDefault, this);
     childSetAction("Cancel", onCancel, this);
-    getChild<LLUICtrl>("Cancel")->setFocus(TRUE);
+    getChild<LLUICtrl>("Cancel")->setFocus(true);
 
     pCheckBox = getChild<LLCheckBoxCtrl>("apply_all");
     pDescription = getChild<LLTextBase>("description");
 
-    gFocusMgr.setKeystrokesOnly(TRUE);
+    gFocusMgr.setKeystrokesOnly(true);
 
-    return TRUE;
+    return true;
 }
 
 //virtual
@@ -162,7 +162,7 @@ void LLSetKeyBindDialog::setParent(LLKeyBindResponderInterface* parent, LLView*
 }
 
 // static
-bool LLSetKeyBindDialog::recordKey(KEY key, MASK mask, BOOL down)
+bool LLSetKeyBindDialog::recordKey(KEY key, MASK mask, bool down)
 {
     if (sRecordKeys)
     {
@@ -180,7 +180,7 @@ bool LLSetKeyBindDialog::recordKey(KEY key, MASK mask, BOOL down)
     return false;
 }
 
-bool LLSetKeyBindDialog::recordAndHandleKey(KEY key, MASK mask, BOOL down)
+bool LLSetKeyBindDialog::recordAndHandleKey(KEY key, MASK mask, bool down)
 {
     if ((key == 'Q' && mask == MASK_CONTROL)
         || key == KEY_ESCAPE)
@@ -214,7 +214,7 @@ bool LLSetKeyBindDialog::recordAndHandleKey(KEY key, MASK mask, BOOL down)
             // Masks by themself are not allowed
             return false;
         }
-        if (down == TRUE)
+        if (down)
         {
             // Most keys are handled on 'down' event because menu is handled on 'down'
             // masks are exceptions to let other keys be handled
@@ -269,14 +269,14 @@ bool LLSetKeyBindDialog::recordAndHandleKey(KEY key, MASK mask, BOOL down)
     return true;
 }
 
-BOOL LLSetKeyBindDialog::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, BOOL down)
+bool LLSetKeyBindDialog::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, bool down)
 {
-    BOOL result = FALSE;
+    bool result = false;
     if (!pParent)
     {
         // we already processed 'down' event, this is 'up', consume
         closeFloater();
-        result = TRUE;
+        result = true;
     }
     if (!result && clicktype == CLICK_LEFT)
     {
@@ -291,8 +291,8 @@ BOOL LLSetKeyBindDialog::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClic
         }
         if (result)
         {
-            setFocus(TRUE);
-            gFocusMgr.setKeystrokesOnly(TRUE);
+            setFocus(true);
+            gFocusMgr.setKeystrokesOnly(true);
         }
         // ignore selection related combinations
         else if (down && (mask & (MASK_SHIFT | MASK_CONTROL)) == 0)
@@ -302,7 +302,7 @@ BOOL LLSetKeyBindDialog::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClic
             {
                 // Note: default doubleclick time is 500ms, but can stretch up to 5s
                 pUpdater = new Updater(boost::bind(&onClickTimeout, this, _1), 0.7f, mask);
-                result = TRUE;
+                result = true;
             }
         }
     }
@@ -314,7 +314,7 @@ BOOL LLSetKeyBindDialog::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClic
         && ((mKeyFilterMask & ALLOW_MASK_MOUSE) != 0 || mask == 0)) // reserved for selection
     {
         setKeyBind(clicktype, KEY_NONE, mask, pCheckBox->getValue().asBoolean());
-        result = TRUE;
+        result = true;
         if (!down)
         {
             // wait for 'up' event before closing
diff --git a/indra/newview/llsetkeybinddialog.h b/indra/newview/llsetkeybinddialog.h
index b0643e37f9..195b4d77d9 100644
--- a/indra/newview/llsetkeybinddialog.h
+++ b/indra/newview/llsetkeybinddialog.h
@@ -59,7 +59,7 @@ public:
     LLSetKeyBindDialog(const LLSD& key);
     ~LLSetKeyBindDialog();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& data);
     /*virtual*/ void onClose(bool app_quiting);
     /*virtual*/ void draw();
@@ -68,9 +68,9 @@ public:
 
     // Wrapper around recordAndHandleKey
     // It does not record, it handles, but handleKey function is already in use
-    static bool recordKey(KEY key, MASK mask, BOOL down);
+    static bool recordKey(KEY key, MASK mask, bool down);
 
-    BOOL handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, BOOL down);
+    bool handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, bool down);
     static void onCancel(void* user_data);
     static void onBlank(void* user_data);
     static void onDefault(void* user_data);
@@ -81,7 +81,7 @@ public:
     class Updater;
 
 private:
-    bool recordAndHandleKey(KEY key, MASK mask, BOOL down);
+    bool recordAndHandleKey(KEY key, MASK mask, bool down);
     void setKeyBind(EMouseClickType click, KEY key, MASK mask, bool all_modes);
     LLKeyBindResponderInterface *pParent;
     LLCheckBoxCtrl *pCheckBox;
diff --git a/indra/newview/llsettingspicker.cpp b/indra/newview/llsettingspicker.cpp
index 648a9503e1..85f0678c4c 100644
--- a/indra/newview/llsettingspicker.cpp
+++ b/indra/newview/llsettingspicker.cpp
@@ -78,7 +78,7 @@ LLFloaterSettingsPicker::LLFloaterSettingsPicker(LLView * owner, LLUUID initial_
     mOwnerHandle = owner->getHandle();
 
     buildFromFile(FLOATER_DEFINITION_XML);
-    setCanMinimize(FALSE);
+    setCanMinimize(false);
 }
 
 
@@ -88,10 +88,10 @@ LLFloaterSettingsPicker::~LLFloaterSettingsPicker()
 }
 
 //-------------------------------------------------------------------------
-BOOL LLFloaterSettingsPicker::postBuild()
+bool LLFloaterSettingsPicker::postBuild()
 {
     if (!LLFloater::postBuild())
-        return FALSE;
+        return false;
 
     std::string prefix = getString(STR_TITLE_PREFIX);
     std::string label = getString(STR_TITLE_SETTINGS);
@@ -115,7 +115,7 @@ BOOL LLFloaterSettingsPicker::postBuild()
 
         // Disable auto selecting first filtered item because it takes away
         // selection from the item set by LLTextureCtrl owning this floater.
-        mInventoryPanel->getRootFolder()->setAutoSelectOverride(TRUE);
+        mInventoryPanel->getRootFolder()->setAutoSelectOverride(true);
 
         // don't put keyboard focus on selected item, because the selection callback
         // will assume that this was user input
@@ -127,7 +127,7 @@ BOOL LLFloaterSettingsPicker::postBuild()
         getChild<LLView>(BTN_SELECT)->setEnabled(mSettingItemID.notNull());
     }
 
-    mNoCopySettingsSelected = FALSE;
+    mNoCopySettingsSelected = false;
 
     childSetAction(BTN_CANCEL, [this](LLUICtrl*, const LLSD& param){ onButtonCancel(); });
     childSetAction(BTN_SELECT, [this](LLUICtrl*, const LLSD& param){ onButtonSelect(); });
@@ -135,9 +135,9 @@ BOOL LLFloaterSettingsPicker::postBuild()
     getChild<LLPanel>(PNL_COMBO)->setVisible(mTrackMode != TRACK_NONE);
 
     // update permission filter once UI is fully initialized
-    mSavedFolderState.setApply(FALSE);
+    mSavedFolderState.setApply(false);
 
-    return TRUE;
+    return true;
 }
 
 void LLFloaterSettingsPicker::onClose(bool app_quitting)
@@ -149,7 +149,7 @@ void LLFloaterSettingsPicker::onClose(bool app_quitting)
     LLView *owner = mOwnerHandle.get();
     if (owner)
     {
-        owner->setFocus(TRUE);
+        owner->setFocus(true);
     }
     mSettingItemID.setNull();
     mInventoryPanel->getRootFolder()->clearSelection();
@@ -218,7 +218,7 @@ void LLFloaterSettingsPicker::onFilterEdit(const std::string& search_string)
             return;
         }
 
-        mSavedFolderState.setApply(TRUE);
+        mSavedFolderState.setApply(true);
         mInventoryPanel->getRootFolder()->applyFunctorRecursively(mSavedFolderState);
         // add folder with current item to list of previously opened folders
         LLOpenFoldersWithSelection opener;
@@ -231,7 +231,7 @@ void LLFloaterSettingsPicker::onFilterEdit(const std::string& search_string)
         // first letter in search term, save existing folder open state
         if (!mInventoryPanel->getFilter().isNotDefault())
         {
-            mSavedFolderState.setApply(FALSE);
+            mSavedFolderState.setApply(false);
             mInventoryPanel->getRootFolder()->applyFunctorRecursively(mSavedFolderState);
         }
     }
@@ -326,7 +326,7 @@ void LLFloaterSettingsPicker::onAssetLoaded(LLUUID asset_id, LLSettingsBase::ptr
         // track 1 always present
         track_selection->add(getString(STR_TRACK_GROUND), LLSD::Integer(LLSettingsDay::TRACK_GROUND_LEVEL), ADD_TOP, true);
         LLUIString formatted_label = getString(STR_TRACK_SKY);
-        for (int i = 2; i < LLSettingsDay::TRACK_MAX; i++)
+        for (U32 i = 2; i < LLSettingsDay::TRACK_MAX; i++)
         {
             if (!pday->isTrackEmpty(i))
             {
@@ -359,9 +359,9 @@ void LLFloaterSettingsPicker::onButtonSelect()
     closeFloater();
 }
 
-BOOL LLFloaterSettingsPicker::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLFloaterSettingsPicker::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
-    BOOL result = FALSE;
+    bool result = false;
     if (mSettingItemID.notNull()
         && mInventoryPanel)
     {
@@ -387,7 +387,7 @@ BOOL LLFloaterSettingsPicker::handleDoubleClick(S32 x, S32 y, MASK mask)
                     }
                     closeFloater();
                     // hit inside panel on selected item, double click should do nothing
-                    result = TRUE;
+                    result = true;
                 }
             }
         }
@@ -400,7 +400,7 @@ BOOL LLFloaterSettingsPicker::handleDoubleClick(S32 x, S32 y, MASK mask)
     return result;
 }
 
-BOOL LLFloaterSettingsPicker::handleKeyHere(KEY key, MASK mask)
+bool LLFloaterSettingsPicker::handleKeyHere(KEY key, MASK mask)
 {
     if ((key == KEY_RETURN) && (mask == MASK_NONE))
     {
@@ -416,7 +416,7 @@ BOOL LLFloaterSettingsPicker::handleKeyHere(KEY key, MASK mask)
                 (*mCommitSignal)(this, res);
             }
             closeFloater();
-            return TRUE;
+            return true;
         }
     }
 
diff --git a/indra/newview/llsettingspicker.h b/indra/newview/llsettingspicker.h
index 7e370af251..29827dfb94 100644
--- a/indra/newview/llsettingspicker.h
+++ b/indra/newview/llsettingspicker.h
@@ -60,7 +60,7 @@ public:
 
     void                    setActive(bool active);
 
-    virtual BOOL            postBuild() override;
+    virtual bool            postBuild() override;
     virtual void            onClose(bool app_quitting) override;
     virtual void            draw() override;
 
@@ -107,8 +107,8 @@ private:
     void                    onAssetLoaded(LLUUID asset_id, LLSettingsBase::ptr_t settings);
     void                    onButtonCancel();
     void                    onButtonSelect();
-    virtual BOOL            handleDoubleClick(S32 x, S32 y, MASK mask) override;
-    BOOL                    handleKeyHere(KEY key, MASK mask) override;
+    virtual bool            handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    bool                    handleKeyHere(KEY key, MASK mask) override;
     void                    onFocusLost() override;
 
 
diff --git a/indra/newview/llsettingsvo.cpp b/indra/newview/llsettingsvo.cpp
index 76632a83ae..42927769de 100644
--- a/indra/newview/llsettingsvo.cpp
+++ b/indra/newview/llsettingsvo.cpp
@@ -69,7 +69,7 @@
 
 #undef  VERIFY_LEGACY_CONVERSION
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 //=========================================================================
 namespace
@@ -181,7 +181,7 @@ void LLSettingsVOBase::onInventoryItemCreated(const LLUUID &inventoryId, LLSetti
         {
             perm.setMaskEveryone(PERM_COPY);
             pitem->setPermissions(perm);
-            pitem->updateServer(FALSE);
+            pitem->updateServer(false);
         }
     }
     if (!settings)
@@ -227,8 +227,8 @@ void LLSettingsVOBase::updateInventoryItem(const LLSettingsBase::ptr_t &settings
         if (settings->getFlag(LLSettingsBase::FLAG_NOTRANS) && new_item->getPermissions().allowOperationBy(PERM_TRANSFER, gAgent.getID()))
         {
             LLPermissions perm(inv_item->getPermissions());
-            perm.setBaseBits(LLUUID::null, FALSE, PERM_TRANSFER);
-            perm.setOwnerBits(LLUUID::null, FALSE, PERM_TRANSFER);
+            perm.setBaseBits(LLUUID::null, false, PERM_TRANSFER);
+            perm.setOwnerBits(LLUUID::null, false, PERM_TRANSFER);
             new_item->setPermissions(perm);
             need_update |= true;
         }
@@ -240,7 +240,7 @@ void LLSettingsVOBase::updateInventoryItem(const LLSettingsBase::ptr_t &settings
         }
         if (need_update)
         {
-            new_item->updateServer(FALSE);
+            new_item->updateServer(false);
             gInventory.updateItem(new_item);
             gInventory.notifyObservers();
         }
@@ -1404,7 +1404,7 @@ LLSettingsDay::ptr_t LLSettingsVODay::buildDeepCloneAndUncompress() const
     U32 flags = getFlags();
     LLSettingsDay::ptr_t day_clone = std::make_shared<LLSettingsVODay>(settings);
 
-    for (S32 i = 0; i < LLSettingsDay::TRACK_MAX; ++i)
+    for (U32 i = 0; i < LLSettingsDay::TRACK_MAX; ++i)
     {
         const LLSettingsDay::CycleTrack_t& track = getCycleTrackConst(i);
         LLSettingsDay::CycleTrack_t::const_iterator iter = track.begin();
diff --git a/indra/newview/llshareavatarhandler.cpp b/indra/newview/llshareavatarhandler.cpp
index 7425aa1a3c..2ec47ed456 100644
--- a/indra/newview/llshareavatarhandler.cpp
+++ b/indra/newview/llshareavatarhandler.cpp
@@ -54,7 +54,7 @@ public:
 
         //Get the ID
         LLUUID id;
-        if (!id.set( params[0], FALSE ))
+        if (!id.set( params[0], false ))
         {
             return false;
         }
diff --git a/indra/newview/llsidepanelappearance.cpp b/indra/newview/llsidepanelappearance.cpp
index eb3dbdbd2e..35d07d1ac8 100644
--- a/indra/newview/llsidepanelappearance.cpp
+++ b/indra/newview/llsidepanelappearance.cpp
@@ -92,7 +92,7 @@ LLSidepanelAppearance::~LLSidepanelAppearance()
 }
 
 // virtual
-BOOL LLSidepanelAppearance::postBuild()
+bool LLSidepanelAppearance::postBuild()
 {
     mOpenOutfitBtn = getChild<LLButton>("openoutfit_btn");
     mOpenOutfitBtn->setClickedCallback(boost::bind(&LLSidepanelAppearance::onOpenOutfitButtonClicked, this));
@@ -142,7 +142,7 @@ BOOL LLSidepanelAppearance::postBuild()
 
     setWearablesLoading(gAgentWearables.isCOFChangeInProgress());
 
-    return TRUE;
+    return true;
 }
 
 // virtual
@@ -195,8 +195,8 @@ void LLSidepanelAppearance::updateToVisibility(const LLSD &new_visibility)
 {
     if (new_visibility["visible"].asBoolean())
     {
-        const BOOL is_outfit_edit_visible = mOutfitEdit && mOutfitEdit->getVisible();
-        const BOOL is_wearable_edit_visible = mEditWearable && mEditWearable->getVisible();
+        const bool is_outfit_edit_visible = mOutfitEdit && mOutfitEdit->getVisible();
+        const bool is_wearable_edit_visible = mEditWearable && mEditWearable->getVisible();
 
         if (is_outfit_edit_visible || is_wearable_edit_visible)
         {
@@ -262,7 +262,7 @@ void LLSidepanelAppearance::onOpenOutfitButtonClicked()
     LLAccordionCtrlTab* tab_outfits = mPanelOutfitsInventory->findChild<LLAccordionCtrlTab>("tab_outfits");
     if (tab_outfits)
     {
-        tab_outfits->changeOpenClose(FALSE);
+        tab_outfits->changeOpenClose(false);
         LLInventoryPanel *inventory_panel = tab_outfits->findChild<LLInventoryPanel>("outfitslist_tab");
         if (inventory_panel)
         {
@@ -271,7 +271,7 @@ void LLSidepanelAppearance::onOpenOutfitButtonClicked()
             if (outfit_folder)
             {
                 outfit_folder->setOpen(!outfit_folder->isOpen());
-                root->setSelection(outfit_folder,TRUE);
+                root->setSelection(outfit_folder,true);
                 root->scrollToShowSelection();
             }
         }
@@ -289,16 +289,16 @@ void LLSidepanelAppearance::onEditAppearanceButtonClicked()
 
 void LLSidepanelAppearance::showOutfitsInventoryPanel()
 {
-    toggleWearableEditPanel(FALSE);
-    toggleOutfitEditPanel(FALSE);
-    toggleMyOutfitsPanel(TRUE, "");
+    toggleWearableEditPanel(false);
+    toggleOutfitEditPanel(false);
+    toggleMyOutfitsPanel(true, "");
 }
 
 void LLSidepanelAppearance::showOutfitsInventoryPanel(const std::string &tab_name)
 {
-    toggleWearableEditPanel(FALSE);
-    toggleOutfitEditPanel(FALSE);
-    toggleMyOutfitsPanel(TRUE, tab_name);
+    toggleWearableEditPanel(false);
+    toggleOutfitEditPanel(false);
+    toggleMyOutfitsPanel(true, tab_name);
 }
 
 void LLSidepanelAppearance::showOutfitEditPanel()
@@ -308,7 +308,7 @@ void LLSidepanelAppearance::showOutfitEditPanel()
     // Accordion's state must be reset in all cases except the one when user
     // is returning back to the mOutfitEdit panel from the mEditWearable panel.
     // The simplest way to control this is to check the visibility state of the mEditWearable
-    // BEFORE it is changed by the call to the toggleWearableEditPanel(FALSE, NULL, TRUE).
+    // BEFORE it is changed by the call to the toggleWearableEditPanel(false, NULL, true).
     if (mEditWearable != NULL && !mEditWearable->getVisible() && mOutfitEdit != NULL)
     {
         mOutfitEdit->resetAccordionState();
@@ -323,19 +323,19 @@ void LLSidepanelAppearance::showOutfitEditPanel()
         return;
     }
 
-    toggleMyOutfitsPanel(FALSE, "");
-    toggleWearableEditPanel(FALSE, NULL, TRUE); // don't switch out of edit appearance mode
-    toggleOutfitEditPanel(TRUE);
+    toggleMyOutfitsPanel(false, "");
+    toggleWearableEditPanel(false, NULL, true); // don't switch out of edit appearance mode
+    toggleOutfitEditPanel(true);
 }
 
-void LLSidepanelAppearance::showWearableEditPanel(LLViewerWearable *wearable /* = NULL*/, BOOL disable_camera_switch)
+void LLSidepanelAppearance::showWearableEditPanel(LLViewerWearable *wearable /* = NULL*/, bool disable_camera_switch)
 {
-    toggleMyOutfitsPanel(FALSE, "");
-    toggleOutfitEditPanel(FALSE, TRUE); // don't switch out of edit appearance mode
-    toggleWearableEditPanel(TRUE, wearable, disable_camera_switch);
+    toggleMyOutfitsPanel(false, "");
+    toggleOutfitEditPanel(false, true); // don't switch out of edit appearance mode
+    toggleWearableEditPanel(true, wearable, disable_camera_switch);
 }
 
-void LLSidepanelAppearance::toggleMyOutfitsPanel(BOOL visible, const std::string& tab_name)
+void LLSidepanelAppearance::toggleMyOutfitsPanel(bool visible, const std::string& tab_name)
 {
     if (!mPanelOutfitsInventory
         || (mPanelOutfitsInventory->getVisible() == visible && tab_name.empty()))
@@ -370,7 +370,7 @@ bool LLSidepanelAppearance::isCOFPanelVisible()
     return false;
 }
 
-void LLSidepanelAppearance::toggleOutfitEditPanel(BOOL visible, BOOL disable_camera_switch)
+void LLSidepanelAppearance::toggleOutfitEditPanel(bool visible, bool disable_camera_switch)
 {
     if (!mOutfitEdit || mOutfitEdit->getVisible() == visible)
     {
@@ -395,7 +395,7 @@ void LLSidepanelAppearance::toggleOutfitEditPanel(BOOL visible, BOOL disable_cam
     }
 }
 
-void LLSidepanelAppearance::toggleWearableEditPanel(BOOL visible, LLViewerWearable *wearable, BOOL disable_camera_switch)
+void LLSidepanelAppearance::toggleWearableEditPanel(bool visible, LLViewerWearable *wearable, bool disable_camera_switch)
 {
     if (!mEditWearable)
     {
@@ -411,7 +411,7 @@ void LLSidepanelAppearance::toggleWearableEditPanel(BOOL visible, LLViewerWearab
     // If we're just switching between outfit and wearable editing or updating item,
     // don't end customization and don't switch camera
     // Don't end customization and don't switch camera without visibility change
-    BOOL change_state = !disable_camera_switch && mEditWearable->getVisible() != visible;
+    bool change_state = !disable_camera_switch && mEditWearable->getVisible() != visible;
 
     if (!wearable)
     {
@@ -462,18 +462,18 @@ void LLSidepanelAppearance::refreshCurrentOutfitName(const std::string& name)
 
         std::string string_name = gAgentWearables.isCOFChangeInProgress() ? "Changing outfits" : "No Outfit";
         mCurrentLookName->setText(getString(string_name));
-        mOpenOutfitBtn->setEnabled(FALSE);
+        mOpenOutfitBtn->setEnabled(false);
     }
     else
     {
         mCurrentLookName->setText(name);
         // Can't just call update verbs since the folder link may not have been created yet.
-        mOpenOutfitBtn->setEnabled(TRUE);
+        mOpenOutfitBtn->setEnabled(true);
     }
 }
 
 //static
-void LLSidepanelAppearance::editWearable(LLViewerWearable *wearable, LLView *data, BOOL disable_camera_switch)
+void LLSidepanelAppearance::editWearable(LLViewerWearable *wearable, LLView *data, bool disable_camera_switch)
 {
     LLFloaterSidePanelContainer::showPanel("appearance", LLSD());
     LLSidepanelAppearance *panel = dynamic_cast<LLSidepanelAppearance*>(data);
diff --git a/indra/newview/llsidepanelappearance.h b/indra/newview/llsidepanelappearance.h
index 239cbd4537..f3d34a857c 100644
--- a/indra/newview/llsidepanelappearance.h
+++ b/indra/newview/llsidepanelappearance.h
@@ -46,12 +46,12 @@ public:
     LLSidepanelAppearance();
     virtual ~LLSidepanelAppearance();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
     void refreshCurrentOutfitName(const std::string& name = "");
 
-    static void editWearable(LLViewerWearable *wearable, LLView *data, BOOL disable_camera_switch = FALSE);
+    static void editWearable(LLViewerWearable *wearable, LLView *data, bool disable_camera_switch = false);
 
     void fetchInventory();
     void inventoryFetched();
@@ -59,7 +59,7 @@ public:
     void showOutfitsInventoryPanel(); // last selected
     void showOutfitsInventoryPanel(const std::string& tab_name);
     void showOutfitEditPanel();
-    void showWearableEditPanel(LLViewerWearable *wearable = NULL, BOOL disable_camera_switch = FALSE);
+    void showWearableEditPanel(LLViewerWearable *wearable = NULL, bool disable_camera_switch = false);
     void setWearablesLoading(bool val);
     void showDefaultSubpart();
     void updateScrollingPanelList();
@@ -75,9 +75,9 @@ private:
     void onOpenOutfitButtonClicked();
     void onEditAppearanceButtonClicked();
 
-    void toggleMyOutfitsPanel(BOOL visible, const std::string& tab_name);
-    void toggleOutfitEditPanel(BOOL visible, BOOL disable_camera_switch = FALSE);
-    void toggleWearableEditPanel(BOOL visible, LLViewerWearable* wearable = NULL, BOOL disable_camera_switch = FALSE);
+    void toggleMyOutfitsPanel(bool visible, const std::string& tab_name);
+    void toggleOutfitEditPanel(bool visible, bool disable_camera_switch = false);
+    void toggleWearableEditPanel(bool visible, LLViewerWearable* wearable = nullptr, bool disable_camera_switch = false);
 
     LLFilterEditor*         mFilterEditor;
     LLPanelOutfitsInventory* mPanelOutfitsInventory;
diff --git a/indra/newview/llsidepanelinventory.cpp b/indra/newview/llsidepanelinventory.cpp
index 0bb9e48a89..0d81f2c099 100644
--- a/indra/newview/llsidepanelinventory.cpp
+++ b/indra/newview/llsidepanelinventory.cpp
@@ -153,7 +153,7 @@ void handleInventoryDisplayInboxChanged()
     }
 }
 
-BOOL LLSidepanelInventory::postBuild()
+bool LLSidepanelInventory::postBuild()
 {
     // UI elements from inventory panel
     {
@@ -223,7 +223,7 @@ BOOL LLSidepanelInventory::postBuild()
         initInventoryViews();
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLSidepanelInventory::updateInbox()
@@ -428,14 +428,14 @@ void LLSidepanelInventory::onBackButtonClicked()
     showInventoryPanel();
 }
 
-void LLSidepanelInventory::onSelectionChange(const std::deque<LLFolderViewItem*> &items, BOOL user_action)
+void LLSidepanelInventory::onSelectionChange(const std::deque<LLFolderViewItem*> &items, bool user_action)
 {
 
 }
 
 void LLSidepanelInventory::showInventoryPanel()
 {
-    mInventoryPanel->setVisible(TRUE);
+    mInventoryPanel->setVisible(true);
 }
 
 void LLSidepanelInventory::initInventoryViews()
@@ -505,7 +505,7 @@ LLInventoryItem *LLSidepanelInventory::getSelectedItem()
 
 U32 LLSidepanelInventory::getSelectedCount()
 {
-    int count = 0;
+    size_t count = 0;
 
     std::set<LLFolderViewItem*> selection_list = mPanelMainInventory->getActivePanel()->getRootFolder()->getSelectionList();
     count += selection_list.size();
@@ -517,7 +517,7 @@ U32 LLSidepanelInventory::getSelectedCount()
         count += selection_list.size();
     }
 
-    return count;
+    return static_cast<U32>(count);
 }
 
 LLInventoryPanel *LLSidepanelInventory::getActivePanel()
@@ -546,7 +546,7 @@ void LLSidepanelInventory::selectAllItemsPanel()
 
 }
 
-BOOL LLSidepanelInventory::isMainInventoryPanelActive() const
+bool LLSidepanelInventory::isMainInventoryPanelActive() const
 {
     return mInventoryPanel->getVisible();
 }
diff --git a/indra/newview/llsidepanelinventory.h b/indra/newview/llsidepanelinventory.h
index a4df090852..b3b3ce4c50 100644
--- a/indra/newview/llsidepanelinventory.h
+++ b/indra/newview/llsidepanelinventory.h
@@ -53,7 +53,7 @@ public:
     void observeInboxCreation();
     void observeInboxModifications(const LLUUID& inboxID);
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     /*virtual*/ void onOpen(const LLSD& key);
 
     LLInventoryPanel* getActivePanel(); // Returns an active inventory panel, if any.
@@ -61,7 +61,7 @@ public:
     LLInventoryPanel* getInboxPanel() const { return mInventoryPanelInbox.get(); }
 
     LLPanelMainInventory* getMainInventoryPanel() const { return mPanelMainInventory; }
-    BOOL isMainInventoryPanelActive() const;
+    bool isMainInventoryPanelActive() const;
 
     void clearSelections(bool clearMain, bool clearInbox);
     std::set<LLFolderViewItem*> getInboxSelectionList();
@@ -88,7 +88,7 @@ protected:
     // Tracks highlighted (selected) item in inventory panel.
     LLInventoryItem *getSelectedItem();
     U32 getSelectedCount();
-    void onSelectionChange(const std::deque<LLFolderViewItem*> &items, BOOL user_action);
+    void onSelectionChange(const std::deque<LLFolderViewItem*> &items, bool user_action);
     // "wear", "teleport", etc.
     void performActionOnSelection(const std::string &action);
 
diff --git a/indra/newview/llsidepanelinventorysubpanel.cpp b/indra/newview/llsidepanelinventorysubpanel.cpp
index 115f06e65f..820ceed296 100644
--- a/indra/newview/llsidepanelinventorysubpanel.cpp
+++ b/indra/newview/llsidepanelinventorysubpanel.cpp
@@ -48,8 +48,8 @@
 // Default constructor
 LLSidepanelInventorySubpanel::LLSidepanelInventorySubpanel(const LLPanel::Params& p)
   : LLPanel(p),
-    mIsDirty(TRUE),
-    mIsEditing(FALSE),
+    mIsDirty(true),
+    mIsEditing(false),
     mCancelBtn(NULL)
 {
 }
@@ -60,7 +60,7 @@ LLSidepanelInventorySubpanel::~LLSidepanelInventorySubpanel()
 }
 
 // virtual
-BOOL LLSidepanelInventorySubpanel::postBuild()
+bool LLSidepanelInventorySubpanel::postBuild()
 {
 
     mCancelBtn = findChild<LLButton>("cancel_btn");
@@ -68,10 +68,10 @@ BOOL LLSidepanelInventorySubpanel::postBuild()
     {
         mCancelBtn->setClickedCallback(boost::bind(&LLSidepanelInventorySubpanel::onCancelButtonClicked, this));
     }
-    return TRUE;
+    return true;
 }
 
-void LLSidepanelInventorySubpanel::setVisible(BOOL visible)
+void LLSidepanelInventorySubpanel::setVisible(bool visible)
 {
     if (visible)
     {
@@ -80,22 +80,22 @@ void LLSidepanelInventorySubpanel::setVisible(BOOL visible)
     LLPanel::setVisible(visible);
 }
 
-void LLSidepanelInventorySubpanel::setIsEditing(BOOL edit)
+void LLSidepanelInventorySubpanel::setIsEditing(bool edit)
 {
     mIsEditing = edit;
-    mIsDirty = TRUE;
+    mIsDirty = true;
 }
 
-BOOL LLSidepanelInventorySubpanel::getIsEditing() const
+bool LLSidepanelInventorySubpanel::getIsEditing() const
 {
 
-    return TRUE; // Default everything to edit mode since we're not using an edit button anymore.
+    return true; // Default everything to edit mode since we're not using an edit button anymore.
     // return mIsEditing;
 }
 
 void LLSidepanelInventorySubpanel::reset()
 {
-    mIsDirty = TRUE;
+    mIsDirty = true;
 }
 
 void LLSidepanelInventorySubpanel::draw()
@@ -104,7 +104,7 @@ void LLSidepanelInventorySubpanel::draw()
     {
         refresh();
         updateVerbs();
-        mIsDirty = FALSE;
+        mIsDirty = false;
     }
 
     LLPanel::draw();
@@ -112,8 +112,8 @@ void LLSidepanelInventorySubpanel::draw()
 
 void LLSidepanelInventorySubpanel::dirty()
 {
-    mIsDirty = TRUE;
-    setIsEditing(FALSE);
+    mIsDirty = true;
+    setIsEditing(false);
 }
 
 void LLSidepanelInventorySubpanel::updateVerbs()
@@ -126,14 +126,14 @@ void LLSidepanelInventorySubpanel::updateVerbs()
 
 void LLSidepanelInventorySubpanel::onEditButtonClicked()
 {
-    setIsEditing(TRUE);
+    setIsEditing(true);
     refresh();
     updateVerbs();
 }
 
 void LLSidepanelInventorySubpanel::onCancelButtonClicked()
 {
-    setIsEditing(FALSE);
+    setIsEditing(false);
     refresh();
     updateVerbs();
 }
diff --git a/indra/newview/llsidepanelinventorysubpanel.h b/indra/newview/llsidepanelinventorysubpanel.h
index 9fa2bbbc00..a11c91561e 100644
--- a/indra/newview/llsidepanelinventorysubpanel.h
+++ b/indra/newview/llsidepanelinventorysubpanel.h
@@ -43,19 +43,19 @@ public:
     LLSidepanelInventorySubpanel(const LLPanel::Params& p = getDefaultParams());
     virtual ~LLSidepanelInventorySubpanel();
 
-    /*virtual*/ void setVisible(BOOL visible);
-    virtual BOOL postBuild();
+    /*virtual*/ void setVisible(bool visible);
+    virtual bool postBuild();
     virtual void draw();
     virtual void reset();
 
     void dirty();
-    void setIsEditing(BOOL edit);
+    void setIsEditing(bool edit);
 protected:
     virtual void refresh() = 0;
     virtual void save() = 0;
     virtual void updateVerbs();
 
-    BOOL getIsEditing() const;
+    bool getIsEditing() const;
 
     //
     // UI Elements
@@ -66,8 +66,8 @@ protected:
     LLButton*                   mCancelBtn;
 
 private:
-    BOOL mIsDirty;      // item properties need to be updated
-    BOOL mIsEditing;    // if we're in edit mode
+    bool mIsDirty;      // item properties need to be updated
+    bool mIsEditing;    // if we're in edit mode
 };
 
 #endif // LL_LLSIDEPANELINVENTORYSUBPANEL_H
diff --git a/indra/newview/llsidepaneliteminfo.cpp b/indra/newview/llsidepaneliteminfo.cpp
index 4506088fd3..7775e3d9f6 100644
--- a/indra/newview/llsidepaneliteminfo.cpp
+++ b/indra/newview/llsidepaneliteminfo.cpp
@@ -152,7 +152,7 @@ LLSidepanelItemInfo::~LLSidepanelItemInfo()
 }
 
 // virtual
-BOOL LLSidepanelItemInfo::postBuild()
+bool LLSidepanelItemInfo::postBuild()
 {
     mChangeThumbnailBtn = getChild<LLUICtrl>("change_thumbnail_btn");
     mItemTypeIcon = getChild<LLIconCtrl>("item_type_icon");
@@ -182,7 +182,7 @@ BOOL LLSidepanelItemInfo::postBuild()
     // "Price" label for edit
     getChild<LLUICtrl>("Edit Cost")->setCommitCallback(boost::bind(&LLSidepanelItemInfo::onCommitSaleInfo, this, _1));
     refresh();
-    return TRUE;
+    return true;
 }
 
 void LLSidepanelItemInfo::setObjectID(const LLUUID& object_id)
@@ -292,16 +292,16 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
 
     // do not enable the UI for incomplete items.
     bool is_complete = item->isFinished();
-    const BOOL cannot_restrict_permissions = LLInventoryType::cannotRestrictPermissions(item->getInventoryType());
-    const BOOL is_calling_card = (item->getInventoryType() == LLInventoryType::IT_CALLINGCARD);
-    const BOOL is_settings = (item->getInventoryType() == LLInventoryType::IT_SETTINGS);
+    const bool cannot_restrict_permissions = LLInventoryType::cannotRestrictPermissions(item->getInventoryType());
+    const bool is_calling_card = (item->getInventoryType() == LLInventoryType::IT_CALLINGCARD);
+    const bool is_settings = (item->getInventoryType() == LLInventoryType::IT_SETTINGS);
     const LLPermissions& perm = item->getPermissions();
-    const BOOL can_agent_manipulate = gAgent.allowOperation(PERM_OWNER, perm,
+    const bool can_agent_manipulate = gAgent.allowOperation(PERM_OWNER, perm,
                                 GP_OBJECT_MANIPULATE);
-    const BOOL can_agent_sell = gAgent.allowOperation(PERM_OWNER, perm,
+    const bool can_agent_sell = gAgent.allowOperation(PERM_OWNER, perm,
                               GP_OBJECT_SET_SALE) &&
         !cannot_restrict_permissions;
-    const BOOL is_link = item->getIsLinkType();
+    const bool is_link = item->getIsLinkType();
 
     const LLUUID trash_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_TRASH);
     bool not_in_trash = (item->getUUID() != trash_id) && !gInventory.isObjectDescendentOf(item->getUUID(), trash_id);
@@ -310,7 +310,7 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
     // item in it.
     LLViewerObject* object = NULL;
     if(!mObjectID.isNull()) object = gObjectList.findObject(mObjectID);
-    BOOL is_obj_modify = TRUE;
+    bool is_obj_modify = true;
     if(object)
     {
         is_obj_modify = object->permOwnerModify();
@@ -318,10 +318,10 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
 
     if(item->getInventoryType() == LLInventoryType::IT_LSL)
     {
-        getChildView("LabelItemExperienceTitle")->setVisible(TRUE);
+        getChildView("LabelItemExperienceTitle")->setVisible(true);
         LLTextBox* tb = getChild<LLTextBox>("LabelItemExperience");
         tb->setText(getString("loading_experience"));
-        tb->setVisible(TRUE);
+        tb->setVisible(true);
         std::string url = std::string();
         if(object && object->getRegion())
         {
@@ -334,19 +334,19 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
     //////////////////////
     // ITEM NAME & DESC //
     //////////////////////
-    BOOL is_modifiable = gAgent.allowOperation(PERM_MODIFY, perm,
+    bool is_modifiable = gAgent.allowOperation(PERM_MODIFY, perm,
                                                GP_OBJECT_MANIPULATE)
         && is_obj_modify && is_complete && not_in_trash;
 
-    getChildView("LabelItemNameTitle")->setEnabled(TRUE);
+    getChildView("LabelItemNameTitle")->setEnabled(true);
     getChildView("LabelItemName")->setEnabled(is_modifiable && !is_calling_card); // for now, don't allow rename of calling cards
     getChild<LLUICtrl>("LabelItemName")->setValue(item->getName());
-    getChildView("LabelItemDescTitle")->setEnabled(TRUE);
+    getChildView("LabelItemDescTitle")->setEnabled(true);
     getChildView("LabelItemDesc")->setEnabled(is_modifiable);
     getChild<LLUICtrl>("LabelItemDesc")->setValue(item->getDescription());
     getChild<LLUICtrl>("item_thumbnail")->setValue(item->getThumbnailUUID());
 
-    LLUIImagePtr icon_img = LLInventoryIcon::getIcon(item->getType(), item->getInventoryType(), item->getFlags(), FALSE);
+    LLUIImagePtr icon_img = LLInventoryIcon::getIcon(item->getType(), item->getInventoryType(), item->getFlags(), false);
     mItemTypeIcon->setImage(icon_img);
 
     // Style for creator and owner links
@@ -389,13 +389,13 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
             mCreatorCacheConnection = LLAvatarNameCache::get(creator_id, boost::bind(&LLSidepanelItemInfo::updateCreatorName, this, _1, _2, style_params));
         }
 
-        getChildView("LabelCreatorTitle")->setEnabled(TRUE);
-        mLabelCreatorName->setEnabled(TRUE);
+        getChildView("LabelCreatorTitle")->setEnabled(true);
+        mLabelCreatorName->setEnabled(true);
     }
     else
     {
-        getChildView("LabelCreatorTitle")->setEnabled(FALSE);
-        mLabelCreatorName->setEnabled(FALSE);
+        getChildView("LabelCreatorTitle")->setEnabled(false);
+        mLabelCreatorName->setEnabled(false);
         mLabelCreatorName->setValue(getString("unknown_multiple"));
     }
 
@@ -446,13 +446,13 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
                 mOwnerCacheConnection = LLAvatarNameCache::get(owner_id, boost::bind(&LLSidepanelItemInfo::updateOwnerName, this, _1, _2, style_params));
             }
         }
-        getChildView("LabelOwnerTitle")->setEnabled(TRUE);
-        mLabelOwnerName->setEnabled(TRUE);
+        getChildView("LabelOwnerTitle")->setEnabled(true);
+        mLabelOwnerName->setEnabled(true);
     }
     else
     {
-        getChildView("LabelOwnerTitle")->setEnabled(FALSE);
-        mLabelOwnerName->setEnabled(FALSE);
+        getChildView("LabelOwnerTitle")->setEnabled(false);
+        mLabelOwnerName->setEnabled(false);
         mLabelOwnerName->setValue(getString("public"));
     }
 
@@ -554,12 +554,12 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
     U32 everyone_mask   = perm.getMaskEveryone();
     U32 next_owner_mask = perm.getMaskNextOwner();
 
-    getChildView("CheckOwnerModify")->setEnabled(FALSE);
-    getChild<LLUICtrl>("CheckOwnerModify")->setValue(LLSD((BOOL)(owner_mask & PERM_MODIFY)));
-    getChildView("CheckOwnerCopy")->setEnabled(FALSE);
-    getChild<LLUICtrl>("CheckOwnerCopy")->setValue(LLSD((BOOL)(owner_mask & PERM_COPY)));
-    getChildView("CheckOwnerTransfer")->setEnabled(FALSE);
-    getChild<LLUICtrl>("CheckOwnerTransfer")->setValue(LLSD((BOOL)(owner_mask & PERM_TRANSFER)));
+    getChildView("CheckOwnerModify")->setEnabled(false);
+    getChild<LLUICtrl>("CheckOwnerModify")->setValue(LLSD((bool)(owner_mask & PERM_MODIFY)));
+    getChildView("CheckOwnerCopy")->setEnabled(false);
+    getChild<LLUICtrl>("CheckOwnerCopy")->setValue(LLSD((bool)(owner_mask & PERM_COPY)));
+    getChildView("CheckOwnerTransfer")->setEnabled(false);
+    getChild<LLUICtrl>("CheckOwnerTransfer")->setValue(LLSD((bool)(owner_mask & PERM_TRANSFER)));
 
     ///////////////////////
     // DEBUG PERMISSIONS //
@@ -569,9 +569,9 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
     {
         childSetVisible("layout_debug_permissions", true);
 
-        BOOL slam_perm          = FALSE;
-        BOOL overwrite_group    = FALSE;
-        BOOL overwrite_everyone = FALSE;
+        bool slam_perm          = false;
+        bool overwrite_group    = false;
+        bool overwrite_everyone = false;
 
         if (item->getType() == LLAssetType::AT_OBJECT)
         {
@@ -618,62 +618,58 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
     // Check for ability to change values.
     if (is_link || cannot_restrict_permissions)
     {
-        getChildView("CheckShareWithGroup")->setEnabled(FALSE);
-        getChildView("CheckEveryoneCopy")->setEnabled(FALSE);
+        getChildView("CheckShareWithGroup")->setEnabled(false);
+        getChildView("CheckEveryoneCopy")->setEnabled(false);
     }
     else if (is_obj_modify && can_agent_manipulate)
     {
-        getChildView("CheckShareWithGroup")->setEnabled(TRUE);
+        getChildView("CheckShareWithGroup")->setEnabled(true);
         getChildView("CheckEveryoneCopy")->setEnabled((owner_mask & PERM_COPY) && (owner_mask & PERM_TRANSFER));
     }
     else
     {
-        getChildView("CheckShareWithGroup")->setEnabled(FALSE);
-        getChildView("CheckEveryoneCopy")->setEnabled(FALSE);
+        getChildView("CheckShareWithGroup")->setEnabled(false);
+        getChildView("CheckEveryoneCopy")->setEnabled(false);
     }
 
     // Set values.
-    BOOL is_group_copy = (group_mask & PERM_COPY) ? TRUE : FALSE;
-    BOOL is_group_modify = (group_mask & PERM_MODIFY) ? TRUE : FALSE;
-    BOOL is_group_move = (group_mask & PERM_MOVE) ? TRUE : FALSE;
+    bool is_group_copy = group_mask & PERM_COPY;
+    bool is_group_modify = group_mask & PERM_MODIFY;
+    bool is_group_move = group_mask & PERM_MOVE;
 
     if (is_group_copy && is_group_modify && is_group_move)
     {
-        getChild<LLUICtrl>("CheckShareWithGroup")->setValue(LLSD((BOOL)TRUE));
-
-        LLCheckBoxCtrl* ctl = getChild<LLCheckBoxCtrl>("CheckShareWithGroup");
-        if(ctl)
+        getChild<LLUICtrl>("CheckShareWithGroup")->setValue(LLSD((bool)true));
+        if (LLCheckBoxCtrl* ctl = getChild<LLCheckBoxCtrl>("CheckShareWithGroup"))
         {
-            ctl->setTentative(FALSE);
+            ctl->setTentative(false);
         }
     }
     else if (!is_group_copy && !is_group_modify && !is_group_move)
     {
-        getChild<LLUICtrl>("CheckShareWithGroup")->setValue(LLSD((BOOL)FALSE));
-        LLCheckBoxCtrl* ctl = getChild<LLCheckBoxCtrl>("CheckShareWithGroup");
-        if(ctl)
+        getChild<LLUICtrl>("CheckShareWithGroup")->setValue(LLSD((bool)false));
+        if (LLCheckBoxCtrl* ctl = getChild<LLCheckBoxCtrl>("CheckShareWithGroup"))
         {
-            ctl->setTentative(FALSE);
+            ctl->setTentative(false);
         }
     }
     else
     {
-        LLCheckBoxCtrl* ctl = getChild<LLCheckBoxCtrl>("CheckShareWithGroup");
-        if(ctl)
+        if (LLCheckBoxCtrl* ctl = getChild<LLCheckBoxCtrl>("CheckShareWithGroup"))
         {
             ctl->setTentative(!ctl->getEnabled());
-            ctl->set(TRUE);
+            ctl->set(true);
         }
     }
 
-    getChild<LLUICtrl>("CheckEveryoneCopy")->setValue(LLSD((BOOL)(everyone_mask & PERM_COPY)));
+    getChild<LLUICtrl>("CheckEveryoneCopy")->setValue(LLSD((bool)(everyone_mask & PERM_COPY)));
 
     ///////////////
     // SALE INFO //
     ///////////////
 
     const LLSaleInfo& sale_info = item->getSaleInfo();
-    BOOL is_for_sale = sale_info.isForSale();
+    bool is_for_sale = sale_info.isForSale();
     LLComboBox* combo_sale_type = getChild<LLComboBox>("ComboBoxSaleType");
     LLUICtrl* edit_cost = getChild<LLUICtrl>("Edit Cost");
 
@@ -683,7 +679,7 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
     {
         getChildView("CheckPurchase")->setEnabled(is_complete);
 
-        getChildView("NextOwnerLabel")->setEnabled(TRUE);
+        getChildView("NextOwnerLabel")->setEnabled(true);
         getChildView("CheckNextOwnerModify")->setEnabled((base_mask & PERM_MODIFY) && !cannot_restrict_permissions);
         getChildView("CheckNextOwnerCopy")->setEnabled((base_mask & PERM_COPY) && !cannot_restrict_permissions && !is_settings);
         getChildView("CheckNextOwnerTransfer")->setEnabled((next_owner_mask & PERM_COPY) && !cannot_restrict_permissions);
@@ -693,15 +689,15 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
     }
     else
     {
-        getChildView("CheckPurchase")->setEnabled(FALSE);
+        getChildView("CheckPurchase")->setEnabled(false);
 
-        getChildView("NextOwnerLabel")->setEnabled(FALSE);
-        getChildView("CheckNextOwnerModify")->setEnabled(FALSE);
-        getChildView("CheckNextOwnerCopy")->setEnabled(FALSE);
-        getChildView("CheckNextOwnerTransfer")->setEnabled(FALSE);
+        getChildView("NextOwnerLabel")->setEnabled(false);
+        getChildView("CheckNextOwnerModify")->setEnabled(false);
+        getChildView("CheckNextOwnerCopy")->setEnabled(false);
+        getChildView("CheckNextOwnerTransfer")->setEnabled(false);
 
-        combo_sale_type->setEnabled(FALSE);
-        edit_cost->setEnabled(FALSE);
+        combo_sale_type->setEnabled(false);
+        edit_cost->setEnabled(false);
     }
 
     // Hide any properties that are not relevant to settings
@@ -725,9 +721,9 @@ void LLSidepanelItemInfo::refreshFromItem(LLViewerInventoryItem* item)
 
     // Set values.
     getChild<LLUICtrl>("CheckPurchase")->setValue(is_for_sale);
-    getChild<LLUICtrl>("CheckNextOwnerModify")->setValue(LLSD(BOOL(next_owner_mask & PERM_MODIFY)));
-    getChild<LLUICtrl>("CheckNextOwnerCopy")->setValue(LLSD(BOOL(next_owner_mask & PERM_COPY)));
-    getChild<LLUICtrl>("CheckNextOwnerTransfer")->setValue(LLSD(BOOL(next_owner_mask & PERM_TRANSFER)));
+    getChild<LLUICtrl>("CheckNextOwnerModify")->setValue(LLSD(bool(next_owner_mask & PERM_MODIFY)));
+    getChild<LLUICtrl>("CheckNextOwnerCopy")->setValue(LLSD(bool(next_owner_mask & PERM_COPY)));
+    getChild<LLUICtrl>("CheckNextOwnerTransfer")->setValue(LLSD(bool(next_owner_mask & PERM_TRANSFER)));
 
     if (is_for_sale)
     {
@@ -957,7 +953,7 @@ void LLSidepanelItemInfo::updatePermissions()
     LLViewerInventoryItem* item = findItem();
     if(!item) return;
 
-    BOOL is_group_owned;
+    bool is_group_owned;
     LLUUID owner_id;
     LLUUID group_id;
     LLPermissions perm(item->getPermissions());
@@ -1066,10 +1062,10 @@ void LLSidepanelItemInfo::updateSaleInfo()
     LLSaleInfo sale_info(item->getSaleInfo());
     if(!gAgent.allowOperation(PERM_TRANSFER, item->getPermissions(), GP_OBJECT_SET_SALE))
     {
-        getChild<LLUICtrl>("CheckPurchase")->setValue(LLSD((BOOL)FALSE));
+        getChild<LLUICtrl>("CheckPurchase")->setValue(LLSD((bool)false));
     }
 
-    if((BOOL)getChild<LLUICtrl>("CheckPurchase")->getValue())
+    if((bool)getChild<LLUICtrl>("CheckPurchase")->getValue())
     {
         // turn on sale info
         LLSaleInfo::EForSale sale_type = LLSaleInfo::FS_COPY;
@@ -1144,7 +1140,7 @@ void LLSidepanelItemInfo::onCommitChanges(LLPointer<LLViewerInventoryItem> item)
         mUpdatePendingId++;
         LLPointer<LLInventoryCallback> callback = new PropertiesChangedCallback(getHandle(), mItemID, mUpdatePendingId);
         update_inventory_item(item.get(), callback);
-        //item->updateServer(FALSE);
+        //item->updateServer(false);
         gInventory.updateItem(item);
         gInventory.notifyObservers();
     }
diff --git a/indra/newview/llsidepaneliteminfo.h b/indra/newview/llsidepaneliteminfo.h
index 45709b82f3..718edc79d6 100644
--- a/indra/newview/llsidepaneliteminfo.h
+++ b/indra/newview/llsidepaneliteminfo.h
@@ -53,7 +53,7 @@ public:
     LLSidepanelItemInfo(const LLPanel::Params& p = getDefaultParams());
     virtual ~LLSidepanelItemInfo();
 
-    /*virtual*/ BOOL postBuild() override;
+    /*virtual*/ bool postBuild() override;
     /*virtual*/ void reset();
 
     void setObjectID(const LLUUID& object_id);
diff --git a/indra/newview/llsidepaneltaskinfo.cpp b/indra/newview/llsidepaneltaskinfo.cpp
index dbcbc6c725..c619b63ef5 100644
--- a/indra/newview/llsidepaneltaskinfo.cpp
+++ b/indra/newview/llsidepaneltaskinfo.cpp
@@ -97,14 +97,13 @@ static std::string click_action_to_string_value(U8 click_action)
         default:
             return "Touch";
     }
-    return "Touch";
 }
 
 // Default constructor
 LLSidepanelTaskInfo::LLSidepanelTaskInfo()
     : mVisibleDebugPermissions(true) // space was allocated by default
 {
-    setMouseOpaque(FALSE);
+    setMouseOpaque(false);
     mSelectionUpdateSlot = LLSelectMgr::instance().mUpdateSignal.connect(boost::bind(&LLSidepanelTaskInfo::refreshAll, this));
     gIdleCallbacks.addFunction(&LLSidepanelTaskInfo::onIdle, (void*)this);
 }
@@ -123,7 +122,7 @@ LLSidepanelTaskInfo::~LLSidepanelTaskInfo()
 }
 
 // virtual
-BOOL LLSidepanelTaskInfo::postBuild()
+bool LLSidepanelTaskInfo::postBuild()
 {
     mOpenBtn = getChild<LLButton>("open_btn");
     mOpenBtn->setClickedCallback(boost::bind(&LLSidepanelTaskInfo::onOpenButtonClicked, this));
@@ -186,10 +185,10 @@ BOOL LLSidepanelTaskInfo::postBuild()
     mDAN = getChild<LLUICtrl>("N:");
     mDAF = getChild<LLUICtrl>("F:");
 
-    return TRUE;
+    return true;
 }
 
-/*virtual*/ void LLSidepanelTaskInfo::onVisibilityChange ( BOOL visible )
+/*virtual*/ void LLSidepanelTaskInfo::onVisibilityChange(bool visible)
 {
     if (visible)
     {
@@ -208,26 +207,26 @@ BOOL LLSidepanelTaskInfo::postBuild()
 void LLSidepanelTaskInfo::disableAll()
 {
     mDACreatorName->setValue(LLStringUtil::null);
-    mDACreatorName->setEnabled(FALSE);
+    mDACreatorName->setEnabled(false);
 
-    mDAOwner->setEnabled(FALSE);
+    mDAOwner->setEnabled(false);
     mDAOwnerName->setValue(LLStringUtil::null);
-    mDAOwnerName->setEnabled(FALSE);
+    mDAOwnerName->setEnabled(false);
 
     mDAObjectName->setValue(LLStringUtil::null);
-    mDAObjectName->setEnabled(FALSE);
-    mDAName->setEnabled(FALSE);
-    mDADescription->setEnabled(FALSE);
+    mDAObjectName->setEnabled(false);
+    mDAName->setEnabled(false);
+    mDADescription->setEnabled(false);
     mDAObjectDescription->setValue(LLStringUtil::null);
-    mDAObjectDescription->setEnabled(FALSE);
+    mDAObjectDescription->setEnabled(false);
 
-    mDAPathfindingAttributes->setEnabled(FALSE);
+    mDAPathfindingAttributes->setEnabled(false);
     mDAPathfindingAttributes->setValue(LLStringUtil::null);
 
-    mDAButtonSetGroup->setEnabled(FALSE);
-    mDAButtonDeed->setEnabled(FALSE);
+    mDAButtonSetGroup->setEnabled(false);
+    mDAButtonDeed->setEnabled(false);
 
-    mDAPermModify->setEnabled(FALSE);
+    mDAPermModify->setEnabled(false);
     mDAPermModify->setValue(LLStringUtil::null);
     mDAEditCost->setValue(LLStringUtil::null);
     mDAComboSaleType->setValue(LLSaleInfo::FS_COPY);
@@ -236,12 +235,12 @@ void LLSidepanelTaskInfo::disableAll()
 
     if (mVisibleDebugPermissions)
     {
-        mDAB->setVisible(FALSE);
-        mDAO->setVisible(FALSE);
-        mDAG->setVisible(FALSE);
-        mDAE->setVisible(FALSE);
-        mDAN->setVisible(FALSE);
-        mDAF->setVisible(FALSE);
+        mDAB->setVisible(false);
+        mDAO->setVisible(false);
+        mDAG->setVisible(false);
+        mDAE->setVisible(false);
+        mDAN->setVisible(false);
+        mDAF->setVisible(false);
 
         LLFloater* parent_floater = gFloaterView->getParentFloater(this);
         LLRect parent_rect = parent_floater->getRect();
@@ -251,45 +250,45 @@ void LLSidepanelTaskInfo::disableAll()
         mVisibleDebugPermissions = false;
     }
 
-    mOpenBtn->setEnabled(FALSE);
-    mPayBtn->setEnabled(FALSE);
-    mBuyBtn->setEnabled(FALSE);
+    mOpenBtn->setEnabled(false);
+    mPayBtn->setEnabled(false);
+    mBuyBtn->setEnabled(false);
 }
 
 void LLSidepanelTaskInfo::disablePermissions()
 {
-    mDACheckboxShareWithGroup->setValue(FALSE);
-    mDACheckboxShareWithGroup->setEnabled(FALSE);
+    mDACheckboxShareWithGroup->setValue(false);
+    mDACheckboxShareWithGroup->setEnabled(false);
 
-    mDACheckboxAllowEveryoneMove->setValue(FALSE);
-    mDACheckboxAllowEveryoneMove->setEnabled(FALSE);
-    mDACheckboxAllowEveryoneCopy->setValue(FALSE);
-    mDACheckboxAllowEveryoneCopy->setEnabled(FALSE);
+    mDACheckboxAllowEveryoneMove->setValue(false);
+    mDACheckboxAllowEveryoneMove->setEnabled(false);
+    mDACheckboxAllowEveryoneCopy->setValue(false);
+    mDACheckboxAllowEveryoneCopy->setEnabled(false);
 
     //Next owner can:
-    mDACheckboxNextOwnerCanModify->setValue(FALSE);
-    mDACheckboxNextOwnerCanModify->setEnabled(FALSE);
-    mDACheckboxNextOwnerCanCopy->setValue(FALSE);
-    mDACheckboxNextOwnerCanCopy->setEnabled(FALSE);
-    mDACheckboxNextOwnerCanTransfer->setValue(FALSE);
-    mDACheckboxNextOwnerCanTransfer->setEnabled(FALSE);
+    mDACheckboxNextOwnerCanModify->setValue(false);
+    mDACheckboxNextOwnerCanModify->setEnabled(false);
+    mDACheckboxNextOwnerCanCopy->setValue(false);
+    mDACheckboxNextOwnerCanCopy->setEnabled(false);
+    mDACheckboxNextOwnerCanTransfer->setValue(false);
+    mDACheckboxNextOwnerCanTransfer->setEnabled(false);
 
     //checkbox for sale
-    mDACheckboxForSale->setValue(FALSE);
-    mDACheckboxForSale->setEnabled(FALSE);
+    mDACheckboxForSale->setValue(false);
+    mDACheckboxForSale->setEnabled(false);
 
     //checkbox include in search
-    mDASearchCheck->setValue(FALSE);
-    mDASearchCheck->setEnabled(FALSE);
+    mDASearchCheck->setValue(false);
+    mDASearchCheck->setEnabled(false);
 
-    mDAComboSaleType->setEnabled(FALSE);
+    mDAComboSaleType->setEnabled(false);
 
-    mDAEditCost->setEnabled(FALSE);
+    mDAEditCost->setEnabled(false);
 
-    mDALabelClickAction->setEnabled(FALSE);
+    mDALabelClickAction->setEnabled(false);
     if (mDAComboClickAction)
     {
-        mDAComboClickAction->setEnabled(FALSE);
+        mDAComboClickAction->setEnabled(false);
         mDAComboClickAction->clear();
     }
 }
@@ -314,14 +313,14 @@ void LLSidepanelTaskInfo::refresh()
         btn_deed_to_group->setLabelUnselected(deedText);
     }
 
-    BOOL root_selected = TRUE;
+    bool root_selected = true;
     LLSelectNode* nodep = mObjectSelection->getFirstRootNode();
     S32 object_count = mObjectSelection->getRootObjectCount();
     if (!nodep || (object_count == 0))
     {
         nodep = mObjectSelection->getFirstNode();
         object_count = mObjectSelection->getObjectCount();
-        root_selected = FALSE;
+        root_selected = false;
     }
 
     LLViewerObject* objectp = NULL;
@@ -338,12 +337,12 @@ void LLSidepanelTaskInfo::refresh()
     }
 
     // figure out a few variables
-    const BOOL is_one_object = (object_count == 1);
+    const bool is_one_object = (object_count == 1);
 
     // BUG: fails if a root and non-root are both single-selected.
-    const BOOL is_perm_modify = (mObjectSelection->getFirstRootNode() && LLSelectMgr::getInstance()->selectGetRootsModify()) ||
+    const bool is_perm_modify = (mObjectSelection->getFirstRootNode() && LLSelectMgr::getInstance()->selectGetRootsModify()) ||
         LLSelectMgr::getInstance()->selectGetModify();
-    const BOOL is_nonpermanent_enforced = (mObjectSelection->getFirstRootNode() && LLSelectMgr::getInstance()->selectGetRootsNonPermanentEnforced()) ||
+    const bool is_nonpermanent_enforced = (mObjectSelection->getFirstRootNode() && LLSelectMgr::getInstance()->selectGetRootsNonPermanentEnforced()) ||
         LLSelectMgr::getInstance()->selectGetNonPermanentEnforced();
 
     S32 string_index = 0;
@@ -368,7 +367,7 @@ void LLSidepanelTaskInfo::refresh()
     {
         ++string_index;
     }
-    getChildView("perm_modify")->setEnabled(TRUE);
+    getChildView("perm_modify")->setEnabled(true);
     getChild<LLUICtrl>("perm_modify")->setValue(MODIFY_INFO_STRINGS[string_index]);
 
     std::string pfAttrName;
@@ -396,11 +395,11 @@ void LLSidepanelTaskInfo::refresh()
         pfAttrName = "Pathfinding_Object_Attr_MultiSelect";
     }
 
-    mDAPathfindingAttributes->setEnabled(TRUE);
+    mDAPathfindingAttributes->setEnabled(true);
     mDAPathfindingAttributes->setValue(LLTrans::getString(pfAttrName));
 
     // Update creator text field
-    getChildView("Creator:")->setEnabled(TRUE);
+    getChildView("Creator:")->setEnabled(true);
 
     std::string creator_name;
     LLUUID creator_id;
@@ -415,14 +414,14 @@ void LLSidepanelTaskInfo::refresh()
     {
         mDACreatorName->setValue(creator_name);
     }
-    mDACreatorName->setEnabled(TRUE);
+    mDACreatorName->setEnabled(true);
 
     // Update owner text field
-    getChildView("Owner:")->setEnabled(TRUE);
+    getChildView("Owner:")->setEnabled(true);
 
     std::string owner_name;
     LLUUID owner_id;
-    const BOOL owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, owner_name);
+    const bool owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, owner_name);
     if (owner_id.isNull())
     {
         if (LLSelectMgr::getInstance()->selectIsGroupOwned())
@@ -455,36 +454,36 @@ void LLSidepanelTaskInfo::refresh()
         mDAOwnerName->setValue(owner_name);
     }
 
-    getChildView("Owner Name")->setEnabled(TRUE);
+    getChildView("Owner Name")->setEnabled(true);
 
     // update group text field
-    getChildView("Group:")->setEnabled(TRUE);
+    getChildView("Group:")->setEnabled(true);
     getChild<LLUICtrl>("Group Name")->setValue(LLStringUtil::null);
     LLUUID group_id;
-    BOOL groups_identical = LLSelectMgr::getInstance()->selectGetGroup(group_id);
+    bool groups_identical = LLSelectMgr::getInstance()->selectGetGroup(group_id);
     if (groups_identical)
     {
         if (mLabelGroupName)
         {
-            mLabelGroupName->setNameID(group_id,TRUE);
-            mLabelGroupName->setEnabled(TRUE);
+            mLabelGroupName->setNameID(group_id,true);
+            mLabelGroupName->setEnabled(true);
         }
     }
     else
     {
         if (mLabelGroupName)
         {
-            mLabelGroupName->setNameID(LLUUID::null, TRUE);
+            mLabelGroupName->setNameID(LLUUID::null, true);
             mLabelGroupName->refresh(LLUUID::null, std::string(), true);
-            mLabelGroupName->setEnabled(FALSE);
+            mLabelGroupName->setEnabled(false);
         }
     }
 
     getChildView("button set group")->setEnabled(owners_identical && (mOwnerID == gAgent.getID()) && is_nonpermanent_enforced);
 
-    getChildView("Name:")->setEnabled(TRUE);
+    getChildView("Name:")->setEnabled(true);
     LLLineEditor* LineEditorObjectName = getChild<LLLineEditor>("Object Name");
-    getChildView("Description:")->setEnabled(TRUE);
+    getChildView("Description:")->setEnabled(true);
     LLLineEditor* LineEditorObjectDesc = getChild<LLLineEditor>("Object Description");
 
     if (is_one_object)
@@ -509,44 +508,44 @@ void LLSidepanelTaskInfo::refresh()
     }
 
     // figure out the contents of the name, description, & category
-    BOOL edit_name_desc = FALSE;
+    bool edit_name_desc = false;
     if (is_one_object && objectp->permModify() && !objectp->isPermanentEnforced())
     {
-        edit_name_desc = TRUE;
+        edit_name_desc = true;
     }
     if (edit_name_desc)
     {
-        getChildView("Object Name")->setEnabled(TRUE);
-        getChildView("Object Description")->setEnabled(TRUE);
+        getChildView("Object Name")->setEnabled(true);
+        getChildView("Object Description")->setEnabled(true);
     }
     else
     {
-        getChildView("Object Name")->setEnabled(FALSE);
-        getChildView("Object Description")->setEnabled(FALSE);
+        getChildView("Object Name")->setEnabled(false);
+        getChildView("Object Description")->setEnabled(false);
     }
 
     S32 total_sale_price = 0;
     S32 individual_sale_price = 0;
-    BOOL is_for_sale_mixed = FALSE;
-    BOOL is_sale_price_mixed = FALSE;
-    U32 num_for_sale = FALSE;
+    bool is_for_sale_mixed = false;
+    bool is_sale_price_mixed = false;
+    U32 num_for_sale = false;
     LLSelectMgr::getInstance()->selectGetAggregateSaleInfo(num_for_sale,
                                                            is_for_sale_mixed,
                                                            is_sale_price_mixed,
                                                            total_sale_price,
                                                            individual_sale_price);
 
-    const BOOL self_owned = (gAgent.getID() == mOwnerID);
-    const BOOL group_owned = LLSelectMgr::getInstance()->selectIsGroupOwned() ;
-    const BOOL public_owned = (mOwnerID.isNull() && !LLSelectMgr::getInstance()->selectIsGroupOwned());
-    const BOOL can_transfer = LLSelectMgr::getInstance()->selectGetRootsTransfer();
-    const BOOL can_copy = LLSelectMgr::getInstance()->selectGetRootsCopy();
+    const bool self_owned = (gAgent.getID() == mOwnerID);
+    const bool group_owned = LLSelectMgr::getInstance()->selectIsGroupOwned() ;
+    const bool public_owned = (mOwnerID.isNull() && !LLSelectMgr::getInstance()->selectIsGroupOwned());
+    const bool can_transfer = LLSelectMgr::getInstance()->selectGetRootsTransfer();
+    const bool can_copy = LLSelectMgr::getInstance()->selectGetRootsCopy();
 
     if (!owners_identical)
     {
-        getChildView("Cost")->setEnabled(FALSE);
+        getChildView("Cost")->setEnabled(false);
         getChild<LLUICtrl>("Edit Cost")->setValue(LLStringUtil::null);
-        getChildView("Edit Cost")->setEnabled(FALSE);
+        getChildView("Edit Cost")->setEnabled(false);
     }
     // You own these objects.
     else if (self_owned || (group_owned && gAgent.hasPowerInGroup(group_id,GP_OBJECT_SET_SALE)))
@@ -570,11 +569,11 @@ void LLSidepanelTaskInfo::refresh()
             // set to the actual cost.
             if ((num_for_sale > 0) && is_for_sale_mixed)
             {
-                edit_price->setTentative(TRUE);
+                edit_price->setTentative(true);
             }
             else if ((num_for_sale > 0) && is_sale_price_mixed)
             {
-                edit_price->setTentative(TRUE);
+                edit_price->setTentative(true);
             }
             else
             {
@@ -583,15 +582,15 @@ void LLSidepanelTaskInfo::refresh()
         }
         // The edit fields are only enabled if you can sell this object
         // and the sale price is not mixed.
-        BOOL enable_edit = (num_for_sale && can_transfer) ? !is_for_sale_mixed : FALSE;
+        bool enable_edit = (num_for_sale && can_transfer) ? !is_for_sale_mixed : false;
         getChildView("Cost")->setEnabled(enable_edit);
         getChildView("Edit Cost")->setEnabled(enable_edit);
     }
     // Someone, not you, owns these objects.
     else if (!public_owned)
     {
-        getChildView("Cost")->setEnabled(FALSE);
-        getChildView("Edit Cost")->setEnabled(FALSE);
+        getChildView("Cost")->setEnabled(false);
+        getChildView("Edit Cost")->setEnabled(false);
 
         // Don't show a price if none of the items are for sale.
         if (num_for_sale)
@@ -608,10 +607,10 @@ void LLSidepanelTaskInfo::refresh()
     // This is a public object.
     else
     {
-        getChildView("Cost")->setEnabled(FALSE);
+        getChildView("Cost")->setEnabled(false);
         getChild<LLSpinCtrl>("Edit Cost")->setLabel(getString("Cost Default"));
         getChild<LLUICtrl>("Edit Cost")->setValue(LLStringUtil::null);
-        getChildView("Edit Cost")->setEnabled(FALSE);
+        getChildView("Edit Cost")->setEnabled(false);
     }
 
     // Enable and disable the permissions checkboxes
@@ -629,22 +628,22 @@ void LLSidepanelTaskInfo::refresh()
     U32 next_owner_mask_on      = 0;
     U32 next_owner_mask_off     = 0;
 
-    BOOL valid_base_perms       = LLSelectMgr::getInstance()->selectGetPerm(PERM_BASE,
+    bool valid_base_perms       = LLSelectMgr::getInstance()->selectGetPerm(PERM_BASE,
                                                                             &base_mask_on,
                                                                             &base_mask_off);
-    //BOOL valid_owner_perms =//
+    //bool valid_owner_perms =//
     LLSelectMgr::getInstance()->selectGetPerm(PERM_OWNER,
                                               &owner_mask_on,
                                               &owner_mask_off);
-    BOOL valid_group_perms      = LLSelectMgr::getInstance()->selectGetPerm(PERM_GROUP,
+    bool valid_group_perms      = LLSelectMgr::getInstance()->selectGetPerm(PERM_GROUP,
                                                                             &group_mask_on,
                                                                             &group_mask_off);
 
-    BOOL valid_everyone_perms   = LLSelectMgr::getInstance()->selectGetPerm(PERM_EVERYONE,
+    bool valid_everyone_perms   = LLSelectMgr::getInstance()->selectGetPerm(PERM_EVERYONE,
                                                                             &everyone_mask_on,
                                                                             &everyone_mask_off);
 
-    BOOL valid_next_perms       = LLSelectMgr::getInstance()->selectGetPerm(PERM_NEXT_OWNER,
+    bool valid_next_perms       = LLSelectMgr::getInstance()->selectGetPerm(PERM_NEXT_OWNER,
                                                                             &next_owner_mask_on,
                                                                             &next_owner_mask_off);
 
@@ -654,19 +653,19 @@ void LLSidepanelTaskInfo::refresh()
         if (valid_base_perms)
         {
             mDAB->setValue("B: " + mask_to_string(base_mask_on));
-            mDAB->setVisible(                           TRUE);
+            mDAB->setVisible(                           true);
 
             mDAO->setValue("O: " + mask_to_string(owner_mask_on));
-            mDAO->setVisible(                           TRUE);
+            mDAO->setVisible(                           true);
 
             mDAG->setValue("G: " + mask_to_string(group_mask_on));
-            mDAG->setVisible(                           TRUE);
+            mDAG->setVisible(                           true);
 
             mDAE->setValue("E: " + mask_to_string(everyone_mask_on));
-            mDAE->setVisible(                           TRUE);
+            mDAE->setVisible(                           true);
 
             mDAN->setValue("N: " + mask_to_string(next_owner_mask_on));
-            mDAN->setVisible(                           TRUE);
+            mDAN->setVisible(                           true);
         }
 
         U32 flag_mask = 0x0;
@@ -676,7 +675,7 @@ void LLSidepanelTaskInfo::refresh()
         if (objectp->permTransfer())    flag_mask |= PERM_TRANSFER;
 
         mDAF->setValue("F:" + mask_to_string(flag_mask));
-        mDAF->setVisible(TRUE);
+        mDAF->setVisible(true);
 
         if (!mVisibleDebugPermissions)
         {
@@ -690,12 +689,12 @@ void LLSidepanelTaskInfo::refresh()
     }
     else if (mVisibleDebugPermissions)
     {
-        mDAB->setVisible(FALSE);
-        mDAO->setVisible(FALSE);
-        mDAG->setVisible(FALSE);
-        mDAE->setVisible(FALSE);
-        mDAN->setVisible(FALSE);
-        mDAF->setVisible(FALSE);
+        mDAB->setVisible(false);
+        mDAO->setVisible(false);
+        mDAG->setVisible(false);
+        mDAE->setVisible(false);
+        mDAN->setVisible(false);
+        mDAF->setVisible(false);
 
         LLFloater* parent_floater = gFloaterView->getParentFloater(this);
         LLRect parent_rect = parent_floater->getRect();
@@ -705,18 +704,18 @@ void LLSidepanelTaskInfo::refresh()
         mVisibleDebugPermissions = false;
     }
 
-    BOOL has_change_perm_ability = FALSE;
-    BOOL has_change_sale_ability = FALSE;
+    bool has_change_perm_ability = false;
+    bool has_change_sale_ability = false;
 
     if (valid_base_perms && is_nonpermanent_enforced &&
         (self_owned || (group_owned && gAgent.hasPowerInGroup(group_id, GP_OBJECT_MANIPULATE))))
     {
-        has_change_perm_ability = TRUE;
+        has_change_perm_ability = true;
     }
     if (valid_base_perms && is_nonpermanent_enforced &&
        (self_owned || (group_owned && gAgent.hasPowerInGroup(group_id, GP_OBJECT_SET_SALE))))
     {
-        has_change_sale_ability = TRUE;
+        has_change_sale_ability = true;
     }
 
     if (!has_change_perm_ability && !has_change_sale_ability && !root_selected)
@@ -727,15 +726,15 @@ void LLSidepanelTaskInfo::refresh()
 
     if (has_change_perm_ability)
     {
-        getChildView("checkbox share with group")->setEnabled(TRUE);
+        getChildView("checkbox share with group")->setEnabled(true);
         getChildView("checkbox allow everyone move")->setEnabled(owner_mask_on & PERM_MOVE);
         getChildView("checkbox allow everyone copy")->setEnabled(owner_mask_on & PERM_COPY && owner_mask_on & PERM_TRANSFER);
     }
     else
     {
-        getChildView("checkbox share with group")->setEnabled(FALSE);
-        getChildView("checkbox allow everyone move")->setEnabled(FALSE);
-        getChildView("checkbox allow everyone copy")->setEnabled(FALSE);
+        getChildView("checkbox share with group")->setEnabled(false);
+        getChildView("checkbox allow everyone move")->setEnabled(false);
+        getChildView("checkbox allow everyone copy")->setEnabled(false);
     }
 
     if (has_change_sale_ability && (owner_mask_on & PERM_TRANSFER))
@@ -752,32 +751,32 @@ void LLSidepanelTaskInfo::refresh()
     }
     else
     {
-        getChildView("checkbox for sale")->setEnabled(FALSE);
-        getChildView("sale type")->setEnabled(FALSE);
+        getChildView("checkbox for sale")->setEnabled(false);
+        getChildView("sale type")->setEnabled(false);
 
-        getChildView("checkbox next owner can modify")->setEnabled(FALSE);
-        getChildView("checkbox next owner can copy")->setEnabled(FALSE);
-        getChildView("checkbox next owner can transfer")->setEnabled(FALSE);
+        getChildView("checkbox next owner can modify")->setEnabled(false);
+        getChildView("checkbox next owner can copy")->setEnabled(false);
+        getChildView("checkbox next owner can transfer")->setEnabled(false);
     }
 
     if (valid_group_perms)
     {
         if ((group_mask_on & PERM_COPY) && (group_mask_on & PERM_MODIFY) && (group_mask_on & PERM_MOVE))
         {
-            getChild<LLUICtrl>("checkbox share with group")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox share with group")->setTentative(  FALSE);
+            getChild<LLUICtrl>("checkbox share with group")->setValue(true);
+            getChild<LLUICtrl>("checkbox share with group")->setTentative(  false);
             getChildView("button deed")->setEnabled(gAgent.hasPowerInGroup(group_id, GP_OBJECT_DEED) && (owner_mask_on & PERM_TRANSFER) && !group_owned && can_transfer);
         }
         else if ((group_mask_off & PERM_COPY) && (group_mask_off & PERM_MODIFY) && (group_mask_off & PERM_MOVE))
         {
-            getChild<LLUICtrl>("checkbox share with group")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox share with group")->setTentative(  FALSE);
-            getChildView("button deed")->setEnabled(FALSE);
+            getChild<LLUICtrl>("checkbox share with group")->setValue(false);
+            getChild<LLUICtrl>("checkbox share with group")->setTentative(  false);
+            getChildView("button deed")->setEnabled(false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox share with group")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox share with group")->setTentative(  TRUE);
+            getChild<LLUICtrl>("checkbox share with group")->setValue(true);
+            getChild<LLUICtrl>("checkbox share with group")->setTentative(  true);
             getChildView("button deed")->setEnabled(gAgent.hasPowerInGroup(group_id, GP_OBJECT_DEED) && (group_mask_on & PERM_MOVE) && (owner_mask_on & PERM_TRANSFER) && !group_owned && can_transfer);
         }
     }
@@ -787,35 +786,35 @@ void LLSidepanelTaskInfo::refresh()
         // Move
         if (everyone_mask_on & PERM_MOVE)
         {
-            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   FALSE);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(true);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   false);
         }
         else if (everyone_mask_off & PERM_MOVE)
         {
-            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   FALSE);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(false);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   TRUE);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setValue(true);
+            getChild<LLUICtrl>("checkbox allow everyone move")->setTentative(   true);
         }
 
         // Copy == everyone can't copy
         if (everyone_mask_on & PERM_COPY)
         {
-            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(TRUE);
+            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(true);
             getChild<LLUICtrl>("checkbox allow everyone copy")->setTentative(   !can_copy || !can_transfer);
         }
         else if (everyone_mask_off & PERM_COPY)
         {
-            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox allow everyone copy")->setTentative(   FALSE);
+            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(false);
+            getChild<LLUICtrl>("checkbox allow everyone copy")->setTentative(   false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox allow everyone copy")->setTentative(   TRUE);
+            getChild<LLUICtrl>("checkbox allow everyone copy")->setValue(true);
+            getChild<LLUICtrl>("checkbox allow everyone copy")->setTentative(   true);
         }
     }
 
@@ -824,71 +823,71 @@ void LLSidepanelTaskInfo::refresh()
         // Modify == next owner canot modify
         if (next_owner_mask_on & PERM_MODIFY)
         {
-            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( FALSE);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(true);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( false);
         }
         else if (next_owner_mask_off & PERM_MODIFY)
         {
-            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( FALSE);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(false);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( TRUE);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setValue(true);
+            getChild<LLUICtrl>("checkbox next owner can modify")->setTentative( true);
         }
 
         // Copy == next owner cannot copy
         if (next_owner_mask_on & PERM_COPY)
         {
-            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(TRUE);
+            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(true);
             getChild<LLUICtrl>("checkbox next owner can copy")->setTentative(   !can_copy);
         }
         else if (next_owner_mask_off & PERM_COPY)
         {
-            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox next owner can copy")->setTentative(   FALSE);
+            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(false);
+            getChild<LLUICtrl>("checkbox next owner can copy")->setTentative(   false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox next owner can copy")->setTentative(   TRUE);
+            getChild<LLUICtrl>("checkbox next owner can copy")->setValue(true);
+            getChild<LLUICtrl>("checkbox next owner can copy")->setTentative(   true);
         }
 
         // Transfer == next owner cannot transfer
         if (next_owner_mask_on & PERM_TRANSFER)
         {
-            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(TRUE);
+            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(true);
             getChild<LLUICtrl>("checkbox next owner can transfer")->setTentative( !can_transfer);
         }
         else if (next_owner_mask_off & PERM_TRANSFER)
         {
-            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(FALSE);
-            getChild<LLUICtrl>("checkbox next owner can transfer")->setTentative( FALSE);
+            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(false);
+            getChild<LLUICtrl>("checkbox next owner can transfer")->setTentative( false);
         }
         else
         {
-            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(TRUE);
-            getChild<LLUICtrl>("checkbox next owner can transfer")->setTentative( TRUE);
+            getChild<LLUICtrl>("checkbox next owner can transfer")->setValue(true);
+            getChild<LLUICtrl>("checkbox next owner can transfer")->setTentative( true);
         }
     }
 
     // reflect sale information
     LLSaleInfo sale_info;
-    BOOL valid_sale_info = LLSelectMgr::getInstance()->selectGetSaleInfo(sale_info);
+    bool valid_sale_info = LLSelectMgr::getInstance()->selectGetSaleInfo(sale_info);
     LLSaleInfo::EForSale sale_type = sale_info.getSaleType();
 
     LLComboBox* combo_sale_type = getChild<LLComboBox>("sale type");
     if (valid_sale_info)
     {
         combo_sale_type->setValue(                  sale_type == LLSaleInfo::FS_NOT ? LLSaleInfo::FS_COPY : sale_type);
-        combo_sale_type->setTentative(              FALSE); // unfortunately this doesn't do anything at the moment.
+        combo_sale_type->setTentative(              false); // unfortunately this doesn't do anything at the moment.
     }
     else
     {
         // default option is sell copy, determined to be safest
         combo_sale_type->setValue(                  LLSaleInfo::FS_COPY);
-        combo_sale_type->setTentative(              TRUE); // unfortunately this doesn't do anything at the moment.
+        combo_sale_type->setTentative(              true); // unfortunately this doesn't do anything at the moment.
     }
 
     getChild<LLUICtrl>("checkbox for sale")->setValue((num_for_sale != 0));
@@ -906,9 +905,9 @@ void LLSidepanelTaskInfo::refresh()
     }
 
     // Check search status of objects
-    const BOOL all_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME );
+    const bool all_volume = LLSelectMgr::getInstance()->selectionAllPCode( LL_PCODE_VOLUME );
     bool include_in_search;
-    const BOOL all_include_in_search = LLSelectMgr::getInstance()->selectionGetIncludeInSearch(&include_in_search);
+    const bool all_include_in_search = LLSelectMgr::getInstance()->selectionGetIncludeInSearch(&include_in_search);
     getChildView("search_check")->setEnabled(has_change_sale_ability && all_volume);
     getChild<LLUICtrl>("search_check")->setValue(include_in_search);
     getChild<LLUICtrl>("search_check")->setTentative(!all_include_in_search);
@@ -944,7 +943,7 @@ void LLSidepanelTaskInfo::onClickGroup()
 {
     LLUUID owner_id;
     std::string name;
-    BOOL owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, name);
+    bool owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, name);
     LLFloater* parent_floater = gFloaterView->getParentFloater(this);
 
     if (owners_identical && (owner_id == gAgent.getID()))
@@ -967,7 +966,7 @@ void LLSidepanelTaskInfo::cbGroupID(LLUUID group_id)
 {
     if (mLabelGroupName)
     {
-        mLabelGroupName->setNameID(group_id, TRUE);
+        mLabelGroupName->setNameID(group_id, true);
     }
     LLSelectMgr::getInstance()->sendGroup(group_id);
 }
@@ -978,13 +977,13 @@ static bool callback_deed_to_group(const LLSD& notification, const LLSD& respons
     if (option == 0)
     {
         LLUUID group_id;
-        const BOOL groups_identical = LLSelectMgr::getInstance()->selectGetGroup(group_id);
+        const bool groups_identical = LLSelectMgr::getInstance()->selectGetGroup(group_id);
         if (group_id.notNull() && groups_identical && (gAgent.hasPowerInGroup(group_id, GP_OBJECT_DEED)))
         {
-            LLSelectMgr::getInstance()->sendOwner(LLUUID::null, group_id, FALSE);
+            LLSelectMgr::getInstance()->sendOwner(LLUUID::null, group_id, false);
         }
     }
-    return FALSE;
+    return false;
 }
 
 void LLSidepanelTaskInfo::onClickDeedToGroup(void *data)
@@ -1005,7 +1004,7 @@ void LLSidepanelTaskInfo::onCommitPerm(LLUICtrl *ctrl, void *data, U8 field, U32
     // Checkbox will have toggled itself
     // LLSidepanelTaskInfo* self = (LLSidepanelTaskInfo*)data;
     LLCheckBoxCtrl *check = (LLCheckBoxCtrl *)ctrl;
-    BOOL new_state = check->get();
+    bool new_state = check->get();
 
     LLSelectMgr::getInstance()->selectionSetObjectPermissions(field, new_state, perm);
 
@@ -1237,7 +1236,7 @@ void LLSidepanelTaskInfo::onCommitIncludeInSearch(LLUICtrl* ctrl, void* data)
 void LLSidepanelTaskInfo::updateVerbs()
 {
     LLSafeHandle<LLObjectSelection> object_selection = LLSelectMgr::getInstance()->getSelection();
-    const BOOL any_selected = (object_selection->getNumNodes() > 0);
+    const bool any_selected = (object_selection->getNumNodes() > 0);
 
     mOpenBtn->setVisible(true);
     mPayBtn->setVisible(true);
@@ -1299,12 +1298,12 @@ void LLSidepanelTaskInfo::refreshAll()
     if (hasFocus())
     {
         focus = gFocusMgr.getKeyboardFocus();
-        setFocus(FALSE);
+        setFocus(false);
     }
     refresh();
     if (focus)
     {
-        focus->setFocus(TRUE);
+        focus->setFocus(true);
     }
 }
 
diff --git a/indra/newview/llsidepaneltaskinfo.h b/indra/newview/llsidepaneltaskinfo.h
index ea457cebe5..3816bb8381 100644
--- a/indra/newview/llsidepaneltaskinfo.h
+++ b/indra/newview/llsidepaneltaskinfo.h
@@ -49,8 +49,8 @@ public:
     LLSidepanelTaskInfo();
     virtual ~LLSidepanelTaskInfo();
 
-    BOOL postBuild() override;
-    void onVisibilityChange ( BOOL new_visibility ) override;
+    bool postBuild() override;
+    void onVisibilityChange (bool new_visibility) override;
 
     void setObjectSelection(LLObjectSelectionHandle selection);
 
diff --git a/indra/newview/llsidetraypanelcontainer.cpp b/indra/newview/llsidetraypanelcontainer.cpp
index bf11b08f64..eb8e05ec27 100644
--- a/indra/newview/llsidetraypanelcontainer.cpp
+++ b/indra/newview/llsidetraypanelcontainer.cpp
@@ -81,12 +81,12 @@ void LLSideTrayPanelContainer::openPreviousPanel()
     }
 }
 
-BOOL LLSideTrayPanelContainer::handleKeyHere(KEY key, MASK mask)
+bool LLSideTrayPanelContainer::handleKeyHere(KEY key, MASK mask)
 {
     // No key press handling code for Panel Container - this disables
     // Tab Container's Alt + Left/Right Button tab switching.
 
-    // Let default handler process key presses, don't simply return TRUE or FALSE
+    // Let default handler process key presses, don't simply return true or false
     // as this may brake some functionality as it did with Copy/Paste for
     // text_editor (ticket EXT-642).
     return LLPanel::handleKeyHere(key, mask);
diff --git a/indra/newview/llsidetraypanelcontainer.h b/indra/newview/llsidetraypanelcontainer.h
index a31a3640d8..5dfd7f2d83 100644
--- a/indra/newview/llsidetraypanelcontainer.h
+++ b/indra/newview/llsidetraypanelcontainer.h
@@ -31,7 +31,7 @@
 
 /**
 * LLSideTrayPanelContainer class acts like LLTabContainer with invisible tabs.
-* It is designed to make panel switching easier, avoid setVisible(TRUE) setVisible(FALSE)
+* It is designed to make panel switching easier, avoid setVisible(true) setVisible(false)
 * calls and related workarounds.
 * use onOpen to open sub panel, pass the name of panel to open
 * in key[PARAM_SUB_PANEL_NAME].
@@ -70,7 +70,7 @@ public:
     * Overrides LLTabContainer::handleKeyHere to disable panel switch on
     * Alt + Left/Right button press.
     */
-    BOOL handleKeyHere(KEY key, MASK mask);
+    bool handleKeyHere(KEY key, MASK mask);
 
     /**
     * Name of parameter that stores panel name to open.
diff --git a/indra/newview/llskinningutil.cpp b/indra/newview/llskinningutil.cpp
index 438b04ff39..9b4ed4c946 100644
--- a/indra/newview/llskinningutil.cpp
+++ b/indra/newview/llskinningutil.cpp
@@ -97,6 +97,12 @@ U32 LLSkinningUtil::getMeshJointCount(const LLMeshSkinInfo *skin)
     return llmin((U32)getMaxJointCount(), (U32)skin->mJointNames.size());
 }
 
+S32 LLSkinningUtil::getMaxGLTFJointCount()
+{
+    // this is the maximum number of 3x4 matrices than can fit in a UBO
+    return gGLManager.mMaxUniformBlockSize / 48;
+}
+
 void LLSkinningUtil::scrubInvalidJoints(LLVOAvatar *avatar, LLMeshSkinInfo* skin)
 {
     if (skin->mInvalidJointsScrubbed)
@@ -131,7 +137,7 @@ void LLSkinningUtil::initSkinningMatrixPalette(
 
     LLMatrix4a world[LL_CHARACTER_MAX_ANIMATED_JOINTS];
 
-    for (U32 j = 0; j < count; ++j)
+    for (S32 j = 0; j < count; ++j)
     {
         S32 joint_num = skin->mJointNums[j];
         LLJoint *joint = avatar->getJoint(joint_num);
@@ -194,7 +200,7 @@ void LLSkinningUtil::checkSkinWeights(LLVector4a* weights, U32 num_vertices, con
 
 void LLSkinningUtil::scrubSkinWeights(LLVector4a* weights, U32 num_vertices, const LLMeshSkinInfo* skin)
 {
-    const S32 max_joints = skin->mJointNames.size();
+    const S32 max_joints = static_cast<S32>(skin->mJointNames.size());
     for (U32 j=0; j<num_vertices; j++)
     {
         F32 *w = weights[j].getF32ptr();
@@ -318,7 +324,7 @@ void LLSkinningUtil::updateRiggingInfo(const LLMeshSkinInfo* skin, LLVOAvatar *a
     if (vol_face.mJointRiggingInfoTab.needsUpdate())
     {
         S32 num_verts = vol_face.mNumVertices;
-        S32 num_joints = skin->mJointNames.size();
+        S32 num_joints = static_cast<S32>(skin->mJointNames.size());
         if (num_verts > 0 && vol_face.mWeights && num_joints > 0)
         {
             initJointNums(const_cast<LLMeshSkinInfo*>(skin), avatar);
diff --git a/indra/newview/llskinningutil.h b/indra/newview/llskinningutil.h
index bd2f8ea04e..aa0c0075af 100644
--- a/indra/newview/llskinningutil.h
+++ b/indra/newview/llskinningutil.h
@@ -40,6 +40,7 @@ class LLJointRiggingInfoTab;
 namespace LLSkinningUtil
 {
     S32 getMaxJointCount();
+    S32 getMaxGLTFJointCount();
     U32 getMeshJointCount(const LLMeshSkinInfo *skin);
     void scrubInvalidJoints(LLVOAvatar *avatar, LLMeshSkinInfo* skin);
     void initSkinningMatrixPalette(LLMatrix4a* mat, S32 count, const LLMeshSkinInfo* skin, LLVOAvatar *avatar);
diff --git a/indra/newview/llsky.cpp b/indra/newview/llsky.cpp
index dc784662e9..82caa14433 100644
--- a/indra/newview/llsky.cpp
+++ b/indra/newview/llsky.cpp
@@ -73,7 +73,7 @@ LLSky::LLSky()
     mFogColor.mV[VALPHA] = 0.0f;
 
     mLightingGeneration = 0;
-    mUpdatedThisFrame = TRUE;
+    mUpdatedThisFrame = true;
 }
 
 
@@ -207,7 +207,7 @@ void LLSky::init()
 
     gSky.setFogRatio(gSavedSettings.getF32("RenderFogRatio"));
 
-    mUpdatedThisFrame = TRUE;
+    mUpdatedThisFrame = true;
 }
 
 
diff --git a/indra/newview/llsky.h b/indra/newview/llsky.h
index 4ece232156..32599dcee2 100644
--- a/indra/newview/llsky.h
+++ b/indra/newview/llsky.h
@@ -72,7 +72,7 @@ public:
     void updateSky();
 
     S32  mLightingGeneration;
-    BOOL mUpdatedThisFrame;
+    bool mUpdatedThisFrame;
 
     void setFogRatio(const F32 fog_ratio);      // Fog distance as fraction of cull distance.
     F32 getFogRatio() const;
diff --git a/indra/newview/llsnapshotlivepreview.cpp b/indra/newview/llsnapshotlivepreview.cpp
index ef0f58ff7a..787dd3b667 100644
--- a/indra/newview/llsnapshotlivepreview.cpp
+++ b/indra/newview/llsnapshotlivepreview.cpp
@@ -56,16 +56,16 @@
 #include "llworld.h"
 #include <boost/filesystem.hpp>
 
-const F32 AUTO_SNAPSHOT_TIME_DELAY = 1.f;
+constexpr F32 AUTO_SNAPSHOT_TIME_DELAY = 1.f;
 
-F32 SHINE_TIME = 0.5f;
-F32 SHINE_WIDTH = 0.6f;
-F32 SHINE_OPACITY = 0.3f;
-F32 FALL_TIME = 0.6f;
-S32 BORDER_WIDTH = 6;
-S32 TOP_PANEL_HEIGHT = 30;
+constexpr F32 SHINE_TIME = 0.5f;
+constexpr F32 SHINE_WIDTH = 0.6f;
+constexpr F32 SHINE_OPACITY = 0.3f;
+constexpr F32 FALL_TIME = 0.6f;
+constexpr S32 BORDER_WIDTH = 6;
+constexpr S32 TOP_PANEL_HEIGHT = 30;
 
-const S32 MAX_TEXTURE_SIZE = 512 ; //max upload texture size 512 * 512
+constexpr S32 MAX_TEXTURE_SIZE = 512 ; //max upload texture size 512 * 512
 
 std::set<LLSnapshotLivePreview*> LLSnapshotLivePreview::sList;
 LLPointer<LLImageFormatted> LLSnapshotLivePreview::sSaveLocalImage = NULL;
@@ -79,24 +79,24 @@ LLSnapshotLivePreview::LLSnapshotLivePreview (const LLSnapshotLivePreview::Param
     mBigThumbnailImage(NULL) ,
     mThumbnailWidth(0),
     mThumbnailHeight(0),
-    mThumbnailSubsampled(FALSE),
+    mThumbnailSubsampled(false),
     mPreviewImageEncoded(NULL),
     mFormattedImage(NULL),
     mShineCountdown(0),
     mFlashAlpha(0.f),
-    mNeedsFlash(TRUE),
+    mNeedsFlash(true),
     mSnapshotQuality(gSavedSettings.getS32("SnapshotQuality")),
     mDataSize(0),
     mSnapshotType(LLSnapshotModel::SNAPSHOT_POSTCARD),
     mSnapshotFormat(LLSnapshotModel::ESnapshotFormat(gSavedSettings.getS32("SnapshotFormat"))),
-    mSnapshotUpToDate(FALSE),
+    mSnapshotUpToDate(false),
     mCameraPos(LLViewerCamera::getInstance()->getOrigin()),
     mCameraRot(LLViewerCamera::getInstance()->getQuaternion()),
-    mSnapshotActive(FALSE),
+    mSnapshotActive(false),
     mSnapshotBufferType(LLSnapshotModel::SNAPSHOT_TYPE_COLOR),
     mFilterName(""),
-    mAllowRenderUI(TRUE),
-    mAllowFullScreenPreview(TRUE),
+    mAllowRenderUI(true),
+    mAllowFullScreenPreview(true),
     mViewContainer(NULL)
 {
     setSnapshotQuality(gSavedSettings.getS32("SnapshotQuality"));
@@ -109,16 +109,16 @@ LLSnapshotLivePreview::LLSnapshotLivePreview (const LLSnapshotLivePreview::Param
     mWidth[1] = gViewerWindow->getWindowWidthRaw();
     mHeight[0] = gViewerWindow->getWindowHeightRaw();
     mHeight[1] = gViewerWindow->getWindowHeightRaw();
-    mImageScaled[0] = FALSE;
-    mImageScaled[1] = FALSE;
+    mImageScaled[0] = false;
+    mImageScaled[1] = false;
 
     mMaxImageSize = MAX_SNAPSHOT_IMAGE_SIZE ;
     mKeepAspectRatio = gSavedSettings.getBOOL("KeepAspectForSnapshot") ;
-    mThumbnailUpdateLock = FALSE ;
-    mThumbnailUpToDate   = FALSE ;
-    mBigThumbnailUpToDate = FALSE ;
+    mThumbnailUpdateLock = false ;
+    mThumbnailUpToDate   = false ;
+    mBigThumbnailUpToDate = false ;
 
-    mForceUpdateSnapshot = FALSE;
+    mForceUpdateSnapshot = false;
 }
 
 LLSnapshotLivePreview::~LLSnapshotLivePreview()
@@ -153,7 +153,7 @@ F32 LLSnapshotLivePreview::getImageAspect()
     return (mKeepAspectRatio ? ((F32)getRect().getWidth()) / ((F32)getRect().getHeight()) : ((F32)getWidth()) / ((F32)getHeight()));
 }
 
-void LLSnapshotLivePreview::updateSnapshot(BOOL new_snapshot, BOOL new_thumbnail, F32 delay)
+void LLSnapshotLivePreview::updateSnapshot(bool new_snapshot, bool new_thumbnail, F32 delay)
 {
     LL_DEBUGS("Snapshot") << "updateSnapshot: mSnapshotUpToDate = " << getSnapshotUpToDate() << LL_ENDL;
 
@@ -167,7 +167,7 @@ void LLSnapshotLivePreview::updateSnapshot(BOOL new_snapshot, BOOL new_thumbnail
             setSize(mWidth[old_image_index], mHeight[old_image_index]);
             mFallAnimTimer.start();
         }
-        mSnapshotUpToDate = FALSE;
+        mSnapshotUpToDate = false;
 
         // Update snapshot source rect depending on whether we keep the aspect ratio.
         LLRect& rect = mImageRect[mCurImageIndex];
@@ -212,8 +212,8 @@ void LLSnapshotLivePreview::updateSnapshot(BOOL new_snapshot, BOOL new_thumbnail
     // Update thumbnail if requested.
     if (new_thumbnail)
     {
-        mThumbnailUpToDate = FALSE ;
-        mBigThumbnailUpToDate = FALSE;
+        mThumbnailUpToDate = false ;
+        mBigThumbnailUpToDate = false;
     }
 }
 
@@ -241,7 +241,7 @@ void LLSnapshotLivePreview::drawPreviewRect(S32 offset_x, S32 offset_y, LLColor4
     glLineWidth(2.0f * line_width) ;
     LLColor4 color(0.0f, 0.0f, 0.0f, 1.0f) ;
     gl_rect_2d( mPreviewRect.mLeft + offset_x, mPreviewRect.mTop + offset_y,
-        mPreviewRect.mRight + offset_x, mPreviewRect.mBottom + offset_y, color, FALSE ) ;
+        mPreviewRect.mRight + offset_x, mPreviewRect.mBottom + offset_y, color, false ) ;
     glLineWidth(line_width) ;
 
     //draw four alpha rectangles to cover areas outside of the snapshot image
@@ -254,20 +254,20 @@ void LLSnapshotLivePreview::drawPreviewRect(S32 offset_x, S32 offset_y, LLColor4
             dwr = mThumbnailWidth - mPreviewRect.getWidth() - dwl ;
 
             gl_rect_2d(mPreviewRect.mLeft + offset_x - dwl, mPreviewRect.mTop + offset_y,
-                mPreviewRect.mLeft + offset_x, mPreviewRect.mBottom + offset_y, alpha_color, TRUE ) ;
+                mPreviewRect.mLeft + offset_x, mPreviewRect.mBottom + offset_y, alpha_color, true ) ;
             gl_rect_2d( mPreviewRect.mRight + offset_x, mPreviewRect.mTop + offset_y,
-                mPreviewRect.mRight + offset_x + dwr, mPreviewRect.mBottom + offset_y, alpha_color, TRUE ) ;
+                mPreviewRect.mRight + offset_x + dwr, mPreviewRect.mBottom + offset_y, alpha_color, true ) ;
         }
 
         if(mThumbnailHeight > mPreviewRect.getHeight())
         {
             S32 dh = (mThumbnailHeight - mPreviewRect.getHeight()) >> 1 ;
             gl_rect_2d(mPreviewRect.mLeft + offset_x - dwl, mPreviewRect.mBottom + offset_y ,
-                mPreviewRect.mRight + offset_x + dwr, mPreviewRect.mBottom + offset_y - dh, alpha_color, TRUE ) ;
+                mPreviewRect.mRight + offset_x + dwr, mPreviewRect.mBottom + offset_y - dh, alpha_color, true ) ;
 
             dh = mThumbnailHeight - mPreviewRect.getHeight() - dh ;
             gl_rect_2d( mPreviewRect.mLeft + offset_x - dwl, mPreviewRect.mTop + offset_y + dh,
-                mPreviewRect.mRight + offset_x + dwr, mPreviewRect.mTop + offset_y, alpha_color, TRUE ) ;
+                mPreviewRect.mRight + offset_x + dwr, mPreviewRect.mTop + offset_y, alpha_color, true ) ;
         }
     }
 }
@@ -323,7 +323,7 @@ void LLSnapshotLivePreview::draw()
             }
             else
             {
-                mNeedsFlash = FALSE;
+                mNeedsFlash = false;
             }
         }
         else
@@ -398,7 +398,7 @@ void LLSnapshotLivePreview::draw()
             gGL.getTexUnit(0)->bind(mViewerImage[old_image_index]);
             // calculate UV scale
             // *FIX get this to work with old image
-            BOOL rescale = !mImageScaled[old_image_index] && mViewerImage[mCurImageIndex].notNull();
+            bool rescale = !mImageScaled[old_image_index] && mViewerImage[mCurImageIndex].notNull();
             F32 uv_width = rescale ? llmin((F32)mWidth[old_image_index] / (F32)mViewerImage[mCurImageIndex]->getWidth(), 1.f) : 1.f;
             F32 uv_height = rescale ? llmin((F32)mHeight[old_image_index] / (F32)mViewerImage[mCurImageIndex]->getHeight(), 1.f) : 1.f;
             gGL.pushMatrix();
@@ -428,7 +428,7 @@ void LLSnapshotLivePreview::draw()
 }
 
 /*virtual*/
-void LLSnapshotLivePreview::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLSnapshotLivePreview::reshape(S32 width, S32 height, bool called_from_parent)
 {
     LLRect old_rect = getRect();
     LLView::reshape(width, height, called_from_parent);
@@ -439,18 +439,18 @@ void LLSnapshotLivePreview::reshape(S32 width, S32 height, BOOL called_from_pare
         {
             // We usually resize only on window reshape, so give it a chance to redraw, assign delay
             updateSnapshot(
-                TRUE, // new snapshot is needed
-                FALSE, // thumbnail will be updated either way.
+                true, // new snapshot is needed
+                false, // thumbnail will be updated either way.
                 AUTO_SNAPSHOT_TIME_DELAY); // shutter delay.
         }
     }
 }
 
-BOOL LLSnapshotLivePreview::setThumbnailImageSize()
+bool LLSnapshotLivePreview::setThumbnailImageSize()
 {
     if (getWidth() < 10 || getHeight() < 10)
     {
-        return FALSE ;
+        return false ;
     }
     S32 width  = (mThumbnailSubsampled ? mPreviewImage->getWidth()  : gViewerWindow->getWindowWidthRaw());
     S32 height = (mThumbnailSubsampled ? mPreviewImage->getHeight() : gViewerWindow->getWindowHeightRaw()) ;
@@ -476,7 +476,7 @@ BOOL LLSnapshotLivePreview::setThumbnailImageSize()
 
     if (mThumbnailWidth > width || mThumbnailHeight > height)
     {
-        return FALSE ;//if the window is too small, ignore thumbnail updating.
+        return false ;//if the window is too small, ignore thumbnail updating.
     }
 
     S32 left = 0 , top = mThumbnailHeight, right = mThumbnailWidth, bottom = 0 ;
@@ -500,10 +500,10 @@ BOOL LLSnapshotLivePreview::setThumbnailImageSize()
     }
     mPreviewRect.set(left - 1, top + 1, right + 1, bottom - 1) ;
 
-    return TRUE ;
+    return true ;
 }
 
-void LLSnapshotLivePreview::generateThumbnailImage(BOOL force_update)
+void LLSnapshotLivePreview::generateThumbnailImage(bool force_update)
 {
     if(mThumbnailUpdateLock) //in the process of updating
     {
@@ -519,17 +519,17 @@ void LLSnapshotLivePreview::generateThumbnailImage(BOOL force_update)
     }
 
     ////lock updating
-    mThumbnailUpdateLock = TRUE ;
+    mThumbnailUpdateLock = true ;
 
     if(!setThumbnailImageSize())
     {
-        mThumbnailUpdateLock = FALSE ;
-        mThumbnailUpToDate = TRUE ;
+        mThumbnailUpdateLock = false ;
+        mThumbnailUpToDate = true ;
         return ;
     }
 
     // Invalidate the big thumbnail when we regenerate the small one
-    mBigThumbnailUpToDate = FALSE;
+    mBigThumbnailUpToDate = false;
 
     if(mThumbnailImage)
     {
@@ -558,7 +558,7 @@ void LLSnapshotLivePreview::generateThumbnailImage(BOOL force_update)
                                          mThumbnailWidth, mThumbnailHeight,
                                          mAllowRenderUI && gSavedSettings.getBOOL("RenderUIInSnapshot"),
                                          gSavedSettings.getBOOL("RenderHUDInSnapshot"),
-                                         FALSE,
+                                         false,
                                          gSavedSettings.getBOOL("RenderSnapshotNoPost"),
                                          mSnapshotBufferType) )
         {
@@ -585,12 +585,12 @@ void LLSnapshotLivePreview::generateThumbnailImage(BOOL force_update)
         }
         // Scale to a power of 2 so it can be mapped to a texture
         raw->expandToPowerOfTwo();
-        mThumbnailImage = LLViewerTextureManager::getLocalTexture(raw.get(), FALSE);
-        mThumbnailUpToDate = TRUE ;
+        mThumbnailImage = LLViewerTextureManager::getLocalTexture(raw.get(), false);
+        mThumbnailUpToDate = true ;
     }
 
     //unlock updating
-    mThumbnailUpdateLock = FALSE ;
+    mThumbnailUpdateLock = false ;
 }
 
 LLViewerTexture* LLSnapshotLivePreview::getBigThumbnailImage()
@@ -633,38 +633,38 @@ LLViewerTexture* LLSnapshotLivePreview::getBigThumbnailImage()
         }
         // Scale to a power of 2 so it can be mapped to a texture
         raw->expandToPowerOfTwo();
-        mBigThumbnailImage = LLViewerTextureManager::getLocalTexture(raw.get(), FALSE);
-        mBigThumbnailUpToDate = TRUE ;
+        mBigThumbnailImage = LLViewerTextureManager::getLocalTexture(raw.get(), false);
+        mBigThumbnailUpToDate = true ;
     }
 
     return mBigThumbnailImage ;
 }
 
 // Called often. Checks whether it's time to grab a new snapshot and if so, does it.
-// Returns TRUE if new snapshot generated, FALSE otherwise.
+// Returns true if new snapshot generated, false otherwise.
 //static
-BOOL LLSnapshotLivePreview::onIdle( void* snapshot_preview )
+bool LLSnapshotLivePreview::onIdle( void* snapshot_preview )
 {
     LLSnapshotLivePreview* previewp = (LLSnapshotLivePreview*)snapshot_preview;
     if (previewp->getWidth() == 0 || previewp->getHeight() == 0)
     {
         LL_WARNS("Snapshot") << "Incorrect dimensions: " << previewp->getWidth() << "x" << previewp->getHeight() << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if (previewp->mSnapshotDelayTimer.getStarted()) // Wait for a snapshot delay timer
     {
         if (!previewp->mSnapshotDelayTimer.hasExpired())
         {
-            return FALSE;
+            return false;
         }
         previewp->mSnapshotDelayTimer.stop();
     }
 
     if (LLToolCamera::getInstance()->hasMouseCapture()) // Hide full-screen preview while camming, either don't take snapshots while ALT-zoom active
     {
-        previewp->setVisible(FALSE);
-        return FALSE;
+        previewp->setVisible(false);
+        return false;
     }
 
     // If we're in freeze-frame and/or auto update mode and camera has moved, update snapshot.
@@ -678,18 +678,18 @@ BOOL LLSnapshotLivePreview::onIdle( void* snapshot_preview )
         previewp->mCameraPos = new_camera_pos;
         previewp->mCameraRot = new_camera_rot;
         // request a new snapshot whenever the camera moves, with a time delay
-        BOOL new_snapshot = gSavedSettings.getBOOL("AutoSnapshot") || previewp->mForceUpdateSnapshot;
+        bool new_snapshot = gSavedSettings.getBOOL("AutoSnapshot") || previewp->mForceUpdateSnapshot;
         LL_DEBUGS("Snapshot") << "camera moved, updating thumbnail" << LL_ENDL;
         previewp->updateSnapshot(
             new_snapshot, // whether a new snapshot is needed or merely invalidate the existing one
-            FALSE, // or if 1st arg is false, whether to produce a new thumbnail image.
+            false, // or if 1st arg is false, whether to produce a new thumbnail image.
             new_snapshot ? AUTO_SNAPSHOT_TIME_DELAY : 0.f); // shutter delay if 1st arg is true.
-        previewp->mForceUpdateSnapshot = FALSE;
+        previewp->mForceUpdateSnapshot = false;
     }
 
     if (previewp->getSnapshotUpToDate() && previewp->getThumbnailUpToDate())
     {
-        return FALSE;
+        return false;
     }
 
     // time to produce a snapshot
@@ -701,13 +701,13 @@ BOOL LLSnapshotLivePreview::onIdle( void* snapshot_preview )
             previewp->mPreviewImage = new LLImageRaw;
         }
 
-        previewp->mSnapshotActive = TRUE;
+        previewp->mSnapshotActive = true;
 
-        previewp->setVisible(FALSE);
-        previewp->setEnabled(FALSE);
+        previewp->setVisible(false);
+        previewp->setEnabled(false);
 
         previewp->getWindow()->incBusyCount();
-        previewp->setImageScaled(FALSE);
+        previewp->setImageScaled(false);
 
         // grab the raw image
         if (gViewerWindow->rawSnapshot(
@@ -718,7 +718,7 @@ BOOL LLSnapshotLivePreview::onIdle( void* snapshot_preview )
                 previewp->getSnapshotType() == LLSnapshotModel::SNAPSHOT_TEXTURE,
                 previewp->mAllowRenderUI && gSavedSettings.getBOOL("RenderUIInSnapshot"),
                 gSavedSettings.getBOOL("RenderHUDInSnapshot"),
-                FALSE,
+                false,
                 gSavedSettings.getBOOL("RenderSnapshotNoPost"),
                 previewp->mSnapshotBufferType,
                 previewp->getMaxImageSize()))
@@ -737,15 +737,15 @@ BOOL LLSnapshotLivePreview::onIdle( void* snapshot_preview )
             }
 
             // The snapshot is updated now...
-            previewp->mSnapshotUpToDate = TRUE;
+            previewp->mSnapshotUpToDate = true;
 
             // We need to update the thumbnail though
             previewp->setThumbnailImageSize();
-            previewp->generateThumbnailImage(TRUE) ;
+            previewp->generateThumbnailImage(true) ;
         }
         previewp->getWindow()->decBusyCount();
         previewp->setVisible(gSavedSettings.getBOOL("UseFreezeFrame") && previewp->mAllowFullScreenPreview); // only show fullscreen preview when in freeze frame mode
-        previewp->mSnapshotActive = FALSE;
+        previewp->mSnapshotActive = false;
         LL_DEBUGS("Snapshot") << "done creating snapshot" << LL_ENDL;
     }
 
@@ -760,7 +760,7 @@ BOOL LLSnapshotLivePreview::onIdle( void* snapshot_preview )
         previewp->mViewContainer->notify(LLSD().with("snapshot-updated", true));
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLSnapshotLivePreview::prepareFreezeFrame()
@@ -768,6 +768,8 @@ void LLSnapshotLivePreview::prepareFreezeFrame()
     // Get the decoded version of the formatted image
     getEncodedImage();
 
+    LLImageDataSharedLock lock(mPreviewImageEncoded);
+
     // We need to scale that a bit for display...
     LLPointer<LLImageRaw> scaled = new LLImageRaw(
         mPreviewImageEncoded->getData(),
@@ -782,15 +784,15 @@ void LLSnapshotLivePreview::prepareFreezeFrame()
         {
             // go ahead and shrink image to appropriate power of 2 for display
             scaled->biasedScaleToPowerOfTwo(1024);
-            setImageScaled(TRUE);
+            setImageScaled(true);
         }
         else
         {
             // expand image but keep original image data intact
-            scaled->expandToPowerOfTwo(1024, FALSE);
+            scaled->expandToPowerOfTwo(1024, false);
         }
 
-        mViewerImage[mCurImageIndex] = LLViewerTextureManager::getLocalTexture(scaled.get(), FALSE);
+        mViewerImage[mCurImageIndex] = LLViewerTextureManager::getLocalTexture(scaled.get(), false);
         LLPointer<LLViewerTexture> curr_preview_image = mViewerImage[mCurImageIndex];
         gGL.getTexUnit(0)->bind(curr_preview_image);
         curr_preview_image->setFilteringOption(getSnapshotType() == LLSnapshotModel::SNAPSHOT_TEXTURE ? LLTexUnit::TFO_ANISOTROPIC : LLTexUnit::TFO_POINT);
@@ -827,6 +829,8 @@ LLPointer<LLImageRaw> LLSnapshotLivePreview::getEncodedImage()
 {
     if (!mPreviewImageEncoded)
     {
+        LLImageDataSharedLock lock(mPreviewImage);
+
         mPreviewImageEncoded = new LLImageRaw;
 
         mPreviewImageEncoded->resize(
@@ -847,7 +851,7 @@ LLPointer<LLImageRaw> LLSnapshotLivePreview::getEncodedImage()
                                                           mPreviewImage->getComponents());
             // Scale it as required by J2C
             scaled->biasedScaleToPowerOfTwo(MAX_TEXTURE_SIZE);
-            setImageScaled(TRUE);
+            setImageScaled(true);
             // Compress to J2C
             if (formatted->encode(scaled, 0.f))
             {
@@ -978,8 +982,10 @@ void LLSnapshotLivePreview::getSize(S32& w, S32& h) const
     h = getHeight();
 }
 
-void LLSnapshotLivePreview::saveTexture(BOOL outfit_snapshot, std::string name)
+void LLSnapshotLivePreview::saveTexture(bool outfit_snapshot, std::string name)
 {
+    LLImageDataSharedLock lock(mPreviewImage);
+
     LL_DEBUGS("Snapshot") << "saving texture: " << mPreviewImage->getWidth() << "x" << mPreviewImage->getHeight() << LL_ENDL;
     // gen a new uuid for this asset
     LLTransactionID tid;
@@ -1059,5 +1065,5 @@ void LLSnapshotLivePreview::saveLocal(LLPointer<LLImageFormatted> image, const s
 {
     sSaveLocalImage = image;
 
-    gViewerWindow->saveImageNumbered(sSaveLocalImage, FALSE, success_cb, failure_cb);
+    gViewerWindow->saveImageNumbered(sSaveLocalImage, false, success_cb, failure_cb);
 }
diff --git a/indra/newview/llsnapshotlivepreview.h b/indra/newview/llsnapshotlivepreview.h
index 072e350e34..c41c21c120 100644
--- a/indra/newview/llsnapshotlivepreview.h
+++ b/indra/newview/llsnapshotlivepreview.h
@@ -59,7 +59,7 @@ public:
     void setContainer(LLView* container) { mViewContainer = container; }
 
     /*virtual*/ void draw();
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent);
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent);
 
     void setSize(S32 w, S32 h);
     void setWidth(S32 w) { mWidth[mCurImageIndex] = w; }
@@ -76,32 +76,32 @@ public:
 
     LLSnapshotModel::ESnapshotType getSnapshotType() const { return mSnapshotType; }
     LLSnapshotModel::ESnapshotFormat getSnapshotFormat() const { return mSnapshotFormat; }
-    BOOL getSnapshotUpToDate() const { return mSnapshotUpToDate; }
-    BOOL isSnapshotActive() { return mSnapshotActive; }
+    bool getSnapshotUpToDate() const { return mSnapshotUpToDate; }
+    bool isSnapshotActive() { return mSnapshotActive; }
     LLViewerTexture* getThumbnailImage() const { return mThumbnailImage ; }
     S32  getThumbnailWidth() const { return mThumbnailWidth ; }
     S32  getThumbnailHeight() const { return mThumbnailHeight ; }
-    BOOL getThumbnailLock() const { return mThumbnailUpdateLock ; }
-    BOOL getThumbnailUpToDate() const { return mThumbnailUpToDate ;}
-    void setThumbnailSubsampled(BOOL subsampled) { mThumbnailSubsampled = subsampled; }
+    bool getThumbnailLock() const { return mThumbnailUpdateLock ; }
+    bool getThumbnailUpToDate() const { return mThumbnailUpToDate ;}
+    void setThumbnailSubsampled(bool subsampled) { mThumbnailSubsampled = subsampled; }
 
     LLViewerTexture* getCurrentImage();
     F32 getImageAspect();
     const LLRect& getImageRect() const { return mImageRect[mCurImageIndex]; }
-    BOOL isImageScaled() const { return mImageScaled[mCurImageIndex]; }
-    void setImageScaled(BOOL scaled) { mImageScaled[mCurImageIndex] = scaled; }
+    bool isImageScaled() const { return mImageScaled[mCurImageIndex]; }
+    void setImageScaled(bool scaled) { mImageScaled[mCurImageIndex] = scaled; }
     const LLVector3d& getPosTakenGlobal() const { return mPosTakenGlobal; }
 
     void setSnapshotType(LLSnapshotModel::ESnapshotType type) { mSnapshotType = type; }
     void setSnapshotFormat(LLSnapshotModel::ESnapshotFormat format);
     bool setSnapshotQuality(S32 quality, bool set_by_user = true);
     void setSnapshotBufferType(LLSnapshotModel::ESnapshotLayerType type) { mSnapshotBufferType = type; }
-    void setAllowRenderUI(BOOL allow) { mAllowRenderUI = allow; }
-    void setAllowFullScreenPreview(BOOL allow) { mAllowFullScreenPreview = allow; }
+    void setAllowRenderUI(bool allow) { mAllowRenderUI = allow; }
+    void setAllowFullScreenPreview(bool allow) { mAllowFullScreenPreview = allow; }
     void setFilter(std::string filter_name) { mFilterName = filter_name; }
     std::string  getFilter() const { return mFilterName; }
-    void updateSnapshot(BOOL new_snapshot, BOOL new_thumbnail = FALSE, F32 delay = 0.f);
-    void saveTexture(BOOL outfit_snapshot = FALSE, std::string name = "");
+    void updateSnapshot(bool new_snapshot, bool new_thumbnail = false, F32 delay = 0.f);
+    void saveTexture(bool outfit_snapshot = false, std::string name = "");
     void saveLocal(const snapshot_saved_signal_t::slot_type& success_cb, const snapshot_saved_signal_t::slot_type& failure_cb);
 
     LLPointer<LLImageFormatted> getFormattedImage();
@@ -110,8 +110,8 @@ public:
 
     /// Sets size of preview thumbnail image and the surrounding rect.
     void setThumbnailPlaceholderRect(const LLRect& rect) {mThumbnailPlaceholderRect = rect; }
-    BOOL setThumbnailImageSize() ;
-    void generateThumbnailImage(BOOL force_update = FALSE) ;
+    bool setThumbnailImageSize() ;
+    void generateThumbnailImage(bool force_update = false) ;
     void resetThumbnailImage() { mThumbnailImage = NULL ; }
     void drawPreviewRect(S32 offset_x, S32 offset_y, LLColor4 alpha_color = LLColor4(0.5f, 0.5f, 0.5f, 0.8f));
     void prepareFreezeFrame();
@@ -120,8 +120,8 @@ public:
     S32  getBigThumbnailWidth() const { return mBigThumbnailWidth ; }
     S32  getBigThumbnailHeight() const { return mBigThumbnailHeight ; }
 
-    // Returns TRUE when snapshot generated, FALSE otherwise.
-    static BOOL onIdle( void* snapshot_preview );
+    // Returns true when snapshot generated, false otherwise.
+    static bool onIdle( void* snapshot_preview );
 
 private:
     LLView*                     mViewContainer;
@@ -131,7 +131,7 @@ private:
     LLRect                      mImageRect[2];
     S32                         mWidth[2];
     S32                         mHeight[2];
-    BOOL                        mImageScaled[2];
+    bool                        mImageScaled[2];
     S32                         mMaxImageSize ;
 
     //thumbnail image
@@ -139,38 +139,38 @@ private:
     S32                         mThumbnailWidth ;
     S32                         mThumbnailHeight ;
     LLRect                      mPreviewRect ;
-    BOOL                        mThumbnailUpdateLock ;
-    BOOL                        mThumbnailUpToDate ;
+    bool                        mThumbnailUpdateLock ;
+    bool                        mThumbnailUpToDate ;
     LLRect                      mThumbnailPlaceholderRect;
-    BOOL                        mThumbnailSubsampled; // TRUE if the thumbnail is a subsampled version of the mPreviewImage
+    bool                        mThumbnailSubsampled; // true if the thumbnail is a subsampled version of the mPreviewImage
 
     LLPointer<LLViewerTexture>  mBigThumbnailImage ;
     S32                         mBigThumbnailWidth;
     S32                         mBigThumbnailHeight;
-    BOOL                        mBigThumbnailUpToDate;
+    bool                        mBigThumbnailUpToDate;
 
     S32                         mCurImageIndex;
     // The logic is mPreviewImage (raw frame) -> mFormattedImage (formatted / filtered) -> mPreviewImageEncoded (decoded back, to show artifacts)
     LLPointer<LLImageRaw>       mPreviewImage;
     LLPointer<LLImageRaw>       mPreviewImageEncoded;
     LLPointer<LLImageFormatted> mFormattedImage;
-    BOOL                        mAllowRenderUI;
-    BOOL                        mAllowFullScreenPreview;
+    bool                        mAllowRenderUI;
+    bool                        mAllowFullScreenPreview;
     LLFrameTimer                mSnapshotDelayTimer;
     S32                         mShineCountdown;
     LLFrameTimer                mShineAnimTimer;
     F32                         mFlashAlpha;
-    BOOL                        mNeedsFlash;
+    bool                        mNeedsFlash;
     LLVector3d                  mPosTakenGlobal;
     S32                         mSnapshotQuality;
     S32                         mDataSize;
     LLSnapshotModel::ESnapshotType              mSnapshotType;
     LLSnapshotModel::ESnapshotFormat    mSnapshotFormat;
-    BOOL                        mSnapshotUpToDate;
+    bool                        mSnapshotUpToDate;
     LLFrameTimer                mFallAnimTimer;
     LLVector3                   mCameraPos;
     LLQuaternion                mCameraRot;
-    BOOL                        mSnapshotActive;
+    bool                        mSnapshotActive;
     LLSnapshotModel::ESnapshotLayerType mSnapshotBufferType;
     std::string                 mFilterName;
 
@@ -178,8 +178,8 @@ private:
 
 public:
     static std::set<LLSnapshotLivePreview*> sList;
-    BOOL                        mKeepAspectRatio ;
-    BOOL                        mForceUpdateSnapshot;
+    bool                        mKeepAspectRatio ;
+    bool                        mForceUpdateSnapshot;
 };
 
 #endif // LL_LLSNAPSHOTLIVEPREVIEW_H
diff --git a/indra/newview/llspatialpartition.cpp b/indra/newview/llspatialpartition.cpp
index 85a73c25cf..c8643a06c0 100644
--- a/indra/newview/llspatialpartition.cpp
+++ b/indra/newview/llspatialpartition.cpp
@@ -70,7 +70,7 @@ static F32 sCurMaxTexPriority = 1.f;
 
 //static counter for frame to switch LOD on
 
-void sg_assert(BOOL expr)
+void sg_assert(bool expr)
 {
 #if LL_OCTREE_PARANOIA_CHECK
     if (!expr)
@@ -136,7 +136,7 @@ void LLSpatialGroup::clearDrawMap()
     mDrawMap.clear();
 }
 
-BOOL LLSpatialGroup::isHUDGroup()
+bool LLSpatialGroup::isHUDGroup()
 {
     return getSpatialPartition() && getSpatialPartition()->isHUDPartition() ;
 }
@@ -218,7 +218,7 @@ void LLSpatialGroup::validateDrawMap()
 #endif
 }
 
-BOOL LLSpatialGroup::updateInGroup(LLDrawable *drawablep, BOOL immediate)
+bool LLSpatialGroup::updateInGroup(LLDrawable *drawablep, bool immediate)
 {
     LL_PROFILE_ZONE_SCOPED;
     drawablep->updateSpatialExtents();
@@ -233,10 +233,10 @@ BOOL LLSpatialGroup::updateInGroup(LLDrawable *drawablep, BOOL immediate)
         unbound();
         setState(OBJECT_DIRTY);
         //setState(GEOM_DIRTY);
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLSpatialGroup::expandExtents(const LLVector4a* addingExtents, const LLXformMatrix& currentTransform)
@@ -293,11 +293,11 @@ void LLSpatialGroup::expandExtents(const LLVector4a* addingExtents, const LLXfor
     mBounds[1].mul(0.5f);
 }
 
-BOOL LLSpatialGroup::addObject(LLDrawable *drawablep)
+bool LLSpatialGroup::addObject(LLDrawable *drawablep)
 {
     if(!drawablep)
     {
-        return FALSE;
+        return false;
     }
     {
         drawablep->setGroup(this);
@@ -314,7 +314,7 @@ BOOL LLSpatialGroup::addObject(LLDrawable *drawablep)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLSpatialGroup::rebuildGeom()
@@ -407,13 +407,13 @@ LLSpatialGroup* LLSpatialGroup::getParent()
     return (LLSpatialGroup*)LLViewerOctreeGroup::getParent();
     }
 
-BOOL LLSpatialGroup::removeObject(LLDrawable *drawablep, BOOL from_octree)
+bool LLSpatialGroup::removeObject(LLDrawable *drawablep, bool from_octree)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_SPATIAL
 
     if(!drawablep)
     {
-        return FALSE;
+        return false;
     }
 
     unbound();
@@ -444,7 +444,7 @@ BOOL LLSpatialGroup::removeObject(LLDrawable *drawablep, BOOL from_octree)
             clearDrawMap();
         }
     }
-    return TRUE;
+    return true;
 }
 
 void LLSpatialGroup::shift(const LLVector4a &offset)
@@ -727,14 +727,14 @@ F32 LLSpatialGroup::getUpdateUrgency() const
     }
 }
 
-BOOL LLSpatialGroup::changeLOD()
+bool LLSpatialGroup::changeLOD()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_SPATIAL
 
     if (hasState(ALPHA_DIRTY | OBJECT_DIRTY))
     {
         //a rebuild is going to happen, update distance and LoD
-        return TRUE;
+        return true;
     }
 
     if (getSpatialPartition()->mSlopRatio > 0.f)
@@ -763,16 +763,16 @@ BOOL LLSpatialGroup::changeLOD()
                                    << " fab ratio " << fabsf(ratio)
                                    << " slop " << getSpatialPartition()->mSlopRatio << LL_ENDL;
 
-            return TRUE;
+            return true;
         }
     }
 
     if (needsUpdate())
     {
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLSpatialGroup::handleInsertion(const TreeNode* node, LLViewerOctreeEntry* entry)
@@ -784,7 +784,7 @@ void LLSpatialGroup::handleInsertion(const TreeNode* node, LLViewerOctreeEntry*
 
 void LLSpatialGroup::handleRemoval(const TreeNode* node, LLViewerOctreeEntry* entry)
 {
-    removeObject((LLDrawable*)entry->getDrawable(), TRUE);
+    removeObject((LLDrawable*)entry->getDrawable(), true);
     LLViewerOctreeGroup::handleRemoval(node, entry);
 }
 
@@ -911,15 +911,15 @@ void LLSpatialGroup::destroyGLState(bool keep_occlusion)
 
 //==============================================
 
-LLSpatialPartition::LLSpatialPartition(U32 data_mask, BOOL render_by_group, LLViewerRegion* regionp)
+LLSpatialPartition::LLSpatialPartition(U32 data_mask, bool render_by_group, LLViewerRegion* regionp)
 : mRenderByGroup(render_by_group), mBridge(NULL)
 {
     mRegionp = regionp;
     mPartitionType = LLViewerRegion::PARTITION_NONE;
     mVertexDataMask = data_mask;
-    mDepthMask = FALSE;
+    mDepthMask = false;
     mSlopRatio = 0.25f;
-    mInfiniteFarClip = FALSE;
+    mInfiniteFarClip = false;
 
     new LLSpatialGroup(mOctree, this);
 }
@@ -930,7 +930,7 @@ LLSpatialPartition::~LLSpatialPartition()
     cleanup();
 }
 
-LLSpatialGroup *LLSpatialPartition::put(LLDrawable *drawablep, BOOL was_visible)
+LLSpatialGroup *LLSpatialPartition::put(LLDrawable *drawablep, bool was_visible)
 {
     LL_PROFILE_ZONE_SCOPED;
     drawablep->updateSpatialExtents();
@@ -956,7 +956,7 @@ LLSpatialGroup *LLSpatialPartition::put(LLDrawable *drawablep, BOOL was_visible)
     return group;
 }
 
-BOOL LLSpatialPartition::remove(LLDrawable *drawablep, LLSpatialGroup *curp)
+bool LLSpatialPartition::remove(LLDrawable *drawablep, LLSpatialGroup *curp)
 {
     LL_PROFILE_ZONE_SCOPED;
     if (!curp->removeObject(drawablep))
@@ -970,10 +970,10 @@ BOOL LLSpatialPartition::remove(LLDrawable *drawablep, LLSpatialGroup *curp)
 
     assert_octree_valid(mOctree);
 
-    return TRUE;
+    return true;
 }
 
-void LLSpatialPartition::move(LLDrawable *drawablep, LLSpatialGroup *curp, BOOL immediate)
+void LLSpatialPartition::move(LLDrawable *drawablep, LLSpatialGroup *curp, bool immediate)
 {
     LL_PROFILE_ZONE_SCOPED;
     // sanity check submitted by open source user bushing Spatula
@@ -984,7 +984,7 @@ void LLSpatialPartition::move(LLDrawable *drawablep, LLSpatialGroup *curp, BOOL
         return;
     }
 
-    BOOL was_visible = curp ? curp->isVisible() : FALSE;
+    bool was_visible = curp ? curp->isVisible() : false;
 
     if (curp && curp->getSpatialPartition() != this)
     {
@@ -1133,7 +1133,7 @@ class LLOctreeCullVisExtents: public LLOctreeCullShadow
 {
 public:
     LLOctreeCullVisExtents(LLCamera* camera, LLVector4a& min, LLVector4a& max)
-        : LLOctreeCullShadow(camera), mMin(min), mMax(max), mEmpty(TRUE) { }
+        : LLOctreeCullShadow(camera), mMin(min), mMax(max), mEmpty(true) { }
 
     virtual bool earlyFail(LLViewerOctreeGroup* base_group)
     {
@@ -1186,7 +1186,7 @@ public:
         {
             if (AABBInFrustumObjectBounds(group) > 0)
             {
-                mEmpty = FALSE;
+                mEmpty = false;
                 const LLVector4a* exts = group->getObjectExtents();
                 update_min_max(mMin, mMax, exts[0]);
                 update_min_max(mMin, mMax, exts[1]);
@@ -1194,14 +1194,14 @@ public:
         }
         else
         {
-            mEmpty = FALSE;
+            mEmpty = false;
             const LLVector4a* exts = group->getExtents();
             update_min_max(mMin, mMax, exts[0]);
             update_min_max(mMin, mMax, exts[1]);
         }
     }
 
-    BOOL mEmpty;
+    bool mEmpty;
     LLVector4a& mMin;
     LLVector4a& mMax;
 };
@@ -1210,7 +1210,7 @@ class LLOctreeCullDetectVisible: public LLOctreeCullShadow
 {
 public:
     LLOctreeCullDetectVisible(LLCamera* camera)
-        : LLOctreeCullShadow(camera), mResult(FALSE) { }
+        : LLOctreeCullShadow(camera), mResult(false) { }
 
     virtual bool earlyFail(LLViewerOctreeGroup* base_group)
     {
@@ -1231,11 +1231,11 @@ public:
     {
         if (base_group->isVisible())
         {
-            mResult = TRUE;
+            mResult = true;
         }
     }
 
-    BOOL mResult;
+    bool mResult;
 };
 
 class LLOctreeSelect : public LLOctreeCull
@@ -1263,7 +1263,7 @@ public:
             {
                 if (drawable->isSpatialBridge())
                 {
-                    drawable->setVisible(*mCamera, mResults, TRUE);
+                    drawable->setVisible(*mCamera, mResults, true);
                 }
                 else
                 {
@@ -1379,7 +1379,7 @@ void LLSpatialPartition::restoreGL()
 {
 }
 
-BOOL LLSpatialPartition::getVisibleExtents(LLCamera& camera, LLVector3& visMin, LLVector3& visMax)
+bool LLSpatialPartition::getVisibleExtents(LLCamera& camera, LLVector3& visMin, LLVector3& visMax)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_SPATIAL;
     LLVector4a visMina, visMaxa;
@@ -1399,14 +1399,14 @@ BOOL LLSpatialPartition::getVisibleExtents(LLCamera& camera, LLVector3& visMin,
     return vis.mEmpty;
 }
 
-BOOL LLSpatialPartition::visibleObjectsInFrustum(LLCamera& camera)
+bool LLSpatialPartition::visibleObjectsInFrustum(LLCamera& camera)
 {
     LLOctreeCullDetectVisible vis(&camera);
     vis.traverse(mOctree);
     return vis.mResult;
 }
 
-S32 LLSpatialPartition::cull(LLCamera &camera, std::vector<LLDrawable *>* results, BOOL for_select)
+S32 LLSpatialPartition::cull(LLCamera &camera, std::vector<LLDrawable *>* results, bool for_select)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_SPATIAL;
 #if LL_OCTREE_PARANOIA_CHECK
@@ -1427,7 +1427,7 @@ S32 LLSpatialPartition::cull(LLCamera &camera, std::vector<LLDrawable *>* result
     return 0;
 }
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 S32 LLSpatialPartition::cull(LLCamera &camera, bool do_occlusion)
 {
@@ -1609,7 +1609,7 @@ bool check_rigged_group(LLDrawable* drawable)
         {
             for (auto& face : root->getFaces())
             {
-                if ((S32)face->getDrawOrderIndex() <= last_draw_index)
+                if ((S32) face->getDrawOrderIndex() <= last_draw_index)
                 {
                     LL_WARNS() << "[(S32)face->getDrawOrderIndex() <= last_draw_index] is true"
                         " (" << (S32)face->getDrawOrderIndex() << " <= " << last_draw_index << ")" << LL_ENDL;
@@ -1626,7 +1626,7 @@ bool check_rigged_group(LLDrawable* drawable)
             {
                 for (auto& face : child->mDrawable->getFaces())
                 {
-                    if ((S32)face->getDrawOrderIndex() <= last_draw_index)
+                    if ((S32) face->getDrawOrderIndex() <= last_draw_index)
                     {
                         LL_WARNS() << "[(S32)face->getDrawOrderIndex() <= last_draw_index] is true"
                             " (" << (S32)face->getDrawOrderIndex() << " <= " << last_draw_index << ")" << LL_ENDL;
@@ -1662,7 +1662,7 @@ void renderOctree(LLSpatialGroup* group)
         col.setVec(0.1f,0.1f,1,0.1f);
 
         {
-            LLGLDepthTest gl_depth(FALSE, FALSE);
+            LLGLDepthTest gl_depth(false, false);
 #if GL_VERSION_1_1
             glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
 #endif
@@ -1796,7 +1796,7 @@ std::set<LLSpatialGroup*> visible_selected_groups;
 
 void renderXRay(LLSpatialGroup* group, LLCamera* camera)
 {
-    BOOL render_objects = (!LLPipeline::sUseOcclusion || !group->isOcclusionState(LLSpatialGroup::OCCLUDED)) && group->isVisible() &&
+    bool render_objects = (!LLPipeline::sUseOcclusion || !group->isOcclusionState(LLSpatialGroup::OCCLUDED)) && group->isVisible() &&
                             !group->isEmpty();
 
     if (render_objects)
@@ -1888,7 +1888,7 @@ void renderUpdateType(LLDrawable* drawablep)
     }
 }
 
-void renderBoundingBox(LLDrawable* drawable, BOOL set_color = TRUE)
+void renderBoundingBox(LLDrawable* drawable, bool set_color = true)
 {
     if (set_color)
     {
@@ -2368,12 +2368,12 @@ void renderPhysicsShape(LLDrawable* drawable, LLVOVolume* volume, bool wireframe
                     LLCDMeshData mesh;
                     mesh.mIndexBase = &index[0];
                     mesh.mVertexBase = pos[0].mV;
-                    mesh.mNumVertices = pos.size();
+                    mesh.mNumVertices = static_cast<int>(pos.size());
                     mesh.mVertexStrideBytes = 12;
                     mesh.mIndexStrideBytes = 6;
                     mesh.mIndexType = LLCDMeshData::INT_16;
 
-                    mesh.mNumTriangles = index.size()/3;
+                    mesh.mNumTriangles = static_cast<int>(index.size())/3;
 
                     LLCDMeshData res;
 
@@ -2773,7 +2773,7 @@ void renderTexelDensity(LLDrawable* drawable)
 
         checkerboard_matrix.initScale(LLVector3(texturep->getWidth(discard_level) / 8, texturep->getHeight(discard_level) / 8, 1.f));
 
-        gGL.getTexUnit(0)->bind(LLViewerTexture::sCheckerBoardImagep, TRUE);
+        gGL.getTexUnit(0)->bind(LLViewerTexture::sCheckerBoardImagep, true);
         gGL.matrixMode(LLRender::MM_TEXTURE);
         gGL.loadMatrix((GLfloat*)&checkerboard_matrix.mMatrix);
 
@@ -2826,7 +2826,7 @@ void renderTexelDensity(LLDrawable* drawable)
     //  //gGL.matrixMode(LLRender::MM_TEXTURE);
     //  glLoadMatrixf((GLfloat*) checkboard_matrix.mMatrix);
 
-    //  gGL.getTexUnit(i)->bind(LLViewerTexture::sCheckerBoardImagep, TRUE);
+    //  gGL.getTexUnit(i)->bind(LLViewerTexture::sCheckerBoardImagep, true);
 
     //  pushVerts(params, LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_TEXCOORD0 | LLVertexBuffer::MAP_COLOR | LLVertexBuffer::MAP_NORMAL );
 
@@ -3467,7 +3467,7 @@ public:
         {
                 continue;
             }
-            renderBoundingBox(drawable, FALSE);
+            renderBoundingBox(drawable, false);
         }
     }
 };
@@ -3662,14 +3662,14 @@ bool LLSpatialPartition::isHUDPartition()
     return mPartitionType == LLViewerRegion::PARTITION_HUD ;
 }
 
-BOOL LLSpatialPartition::isVisible(const LLVector3& v)
+bool LLSpatialPartition::isVisible(const LLVector3& v)
 {
     if (!LLViewerCamera::getInstance()->sphereInFrustum(v, 4.0f))
     {
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 LL_ALIGN_PREFIX(16)
@@ -3685,12 +3685,12 @@ public:
     LLVector4a *mNormal;
     LLVector4a *mTangent;
     LLDrawable* mHit;
-    BOOL mPickTransparent;
-    BOOL mPickRigged;
-    BOOL mPickUnselectable;
-    BOOL mPickReflectionProbe;
+    bool mPickTransparent;
+    bool mPickRigged;
+    bool mPickUnselectable;
+    bool mPickReflectionProbe;
 
-    LLOctreeIntersect(const LLVector4a& start, const LLVector4a& end, BOOL pick_transparent, BOOL pick_rigged, BOOL pick_unselectable, BOOL pick_reflection_probe,
+    LLOctreeIntersect(const LLVector4a& start, const LLVector4a& end, bool pick_transparent, bool pick_rigged, bool pick_unselectable, bool pick_reflection_probe,
                       S32* face_hit, LLVector4a* intersection, LLVector2* tex_coord, LLVector4a* normal, LLVector4a* tangent)
         : mStart(start),
           mEnd(end),
@@ -3811,7 +3811,7 @@ public:
                 }
 
                 if (!skip_check && vobj->lineSegmentIntersect(mStart, mEnd, -1,
-                    (mPickReflectionProbe && vobj->isReflectionProbe()) ? TRUE : mPickTransparent, // always pick transparent when picking selection probe
+                    (mPickReflectionProbe && vobj->isReflectionProbe()) ? true : mPickTransparent, // always pick transparent when picking selection probe
                     mPickRigged, mPickUnselectable, mFaceHit, &intersection, mTexCoord, mNormal, mTangent))
                 {
                     mEnd = intersection;  // shorten ray so we only find CLOSER hits
@@ -3830,10 +3830,10 @@ public:
 } LL_ALIGN_POSTFIX(16);
 
 LLDrawable* LLSpatialPartition::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
-                                                     BOOL pick_transparent,
-                                                     BOOL pick_rigged,
-                                                     BOOL pick_unselectable,
-                                                     BOOL pick_reflection_probe,
+                                                     bool pick_transparent,
+                                                     bool pick_rigged,
+                                                     bool pick_unselectable,
+                                                     bool pick_reflection_probe,
                                                      S32* face_hit,                   // return the face hit
                                                      LLVector4a* intersection,         // return the intersection point
                                                      LLVector2* tex_coord,            // return the texture coordinates of the intersection point
@@ -3849,10 +3849,10 @@ LLDrawable* LLSpatialPartition::lineSegmentIntersect(const LLVector4a& start, co
 }
 
 LLDrawable* LLSpatialGroup::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
-    BOOL pick_transparent,
-    BOOL pick_rigged,
-    BOOL pick_unselectable,
-    BOOL pick_reflection_probe,
+    bool pick_transparent,
+    bool pick_rigged,
+    bool pick_unselectable,
+    bool pick_reflection_probe,
     S32* face_hit,                   // return the face hit
     LLVector4a* intersection,         // return the intersection point
     LLVector2* tex_coord,            // return the texture coordinates of the intersection point
diff --git a/indra/newview/llspatialpartition.h b/indra/newview/llspatialpartition.h
index a78997cef0..c074d6a89a 100644
--- a/indra/newview/llspatialpartition.h
+++ b/indra/newview/llspatialpartition.h
@@ -218,7 +218,7 @@ public:
     }
 
     static U32 sNodeCount;
-    static bool sNoDelete; //deletion of spatial groups and draw info not allowed if TRUE
+    static bool sNoDelete; //deletion of spatial groups and draw info not allowed if true
 
     typedef std::vector<LLPointer<LLSpatialGroup> > sg_vector_t;
     typedef std::vector<LLPointer<LLSpatialBridge> > bridge_list_t;
@@ -280,7 +280,7 @@ public:
 
     LLSpatialGroup(OctreeNode* node, LLSpatialPartition* part);
 
-    BOOL isHUDGroup() ;
+    bool isHUDGroup() ;
 
     void clearDrawMap();
     void validate();
@@ -292,9 +292,9 @@ public:
 
     LLSpatialGroup* getParent();
 
-    BOOL addObject(LLDrawable *drawablep);
-    BOOL removeObject(LLDrawable *drawablep, BOOL from_octree = FALSE);
-    BOOL updateInGroup(LLDrawable *drawablep, BOOL immediate = FALSE); // Update position if it's in the group
+    bool addObject(LLDrawable *drawablep);
+    bool removeObject(LLDrawable *drawablep, bool from_octree = false);
+    bool updateInGroup(LLDrawable *drawablep, bool immediate = false); // Update position if it's in the group
     void expandExtents(const LLVector4a* addingExtents, const LLXformMatrix& currentTransform);
     void shift(const LLVector4a &offset);
 
@@ -303,7 +303,7 @@ public:
 
     void updateDistance(LLCamera& camera);
     F32 getUpdateUrgency() const;
-    BOOL changeLOD();
+    bool changeLOD();
     void rebuildGeom();
     void rebuildMesh();
 
@@ -314,10 +314,10 @@ public:
     void drawObjectBox(LLColor4 col);
 
     LLDrawable* lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
-        BOOL pick_transparent,
-        BOOL pick_rigged,
-        BOOL pick_unselectable,
-        BOOL pick_reflection_probe,
+        bool pick_transparent,
+        bool pick_rigged,
+        bool pick_unselectable,
+        bool pick_reflection_probe,
         S32* face_hit,                          // return the face hit
         LLVector4a* intersection = NULL,         // return the intersection point
         LLVector2* tex_coord = NULL,            // return the texture coordinates of the intersection point
@@ -385,17 +385,17 @@ public:
 class LLSpatialPartition: public LLViewerOctreePartition, public LLGeometryManager
 {
 public:
-    LLSpatialPartition(U32 data_mask,  BOOL render_by_group, LLViewerRegion* regionp);
+    LLSpatialPartition(U32 data_mask,  bool render_by_group, LLViewerRegion* regionp);
     virtual ~LLSpatialPartition();
 
-    LLSpatialGroup *put(LLDrawable *drawablep, BOOL was_visible = FALSE);
-    BOOL remove(LLDrawable *drawablep, LLSpatialGroup *curp);
+    LLSpatialGroup *put(LLDrawable *drawablep, bool was_visible = false);
+    bool remove(LLDrawable *drawablep, LLSpatialGroup *curp);
 
     LLDrawable* lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
-                                     BOOL pick_transparent,
-                                     BOOL pick_rigged,
-                                     BOOL pick_unselectable,
-                                     BOOL pick_reflection_probe,
+                                     bool pick_transparent,
+                                     bool pick_rigged,
+                                     bool pick_unselectable,
+                                     bool pick_reflection_probe,
                                      S32* face_hit,                          // return the face hit
                                      LLVector4a* intersection = NULL,         // return the intersection point
                                      LLVector2* tex_coord = NULL,            // return the texture coordinates of the intersection point
@@ -405,7 +405,7 @@ public:
 
 
     // If the drawable moves, move it here.
-    virtual void move(LLDrawable *drawablep, LLSpatialGroup *curp, BOOL immediate = FALSE);
+    virtual void move(LLDrawable *drawablep, LLSpatialGroup *curp, bool immediate = false);
     virtual void shift(const LLVector4a &offset);
 
     virtual F32 calcDistance(LLSpatialGroup* group, LLCamera& camera);
@@ -414,33 +414,33 @@ public:
     virtual void rebuildGeom(LLSpatialGroup* group);
     virtual void rebuildMesh(LLSpatialGroup* group);
 
-    BOOL visibleObjectsInFrustum(LLCamera& camera);
+    bool visibleObjectsInFrustum(LLCamera& camera);
     /*virtual*/ S32 cull(LLCamera &camera, bool do_occlusion=false); // Cull on arbitrary frustum
-    S32 cull(LLCamera &camera, std::vector<LLDrawable *>* results, BOOL for_select); // Cull on arbitrary frustum
+    S32 cull(LLCamera &camera, std::vector<LLDrawable *>* results, bool for_select); // Cull on arbitrary frustum
 
-    BOOL isVisible(const LLVector3& v);
+    bool isVisible(const LLVector3& v);
     bool isHUDPartition() ;
 
     LLSpatialBridge* asBridge() { return mBridge; }
-    BOOL isBridge() { return asBridge() != NULL; }
+    bool isBridge() { return asBridge() != NULL; }
 
     void renderPhysicsShapes(bool depth_only);
     void renderDebug();
     void renderIntersectingBBoxes(LLCamera* camera);
     void restoreGL();
 
-    BOOL getVisibleExtents(LLCamera& camera, LLVector3& visMin, LLVector3& visMax);
+    bool getVisibleExtents(LLCamera& camera, LLVector3& visMin, LLVector3& visMax);
 
 public:
     LLSpatialBridge* mBridge; // NULL for non-LLSpatialBridge instances, otherwise, mBridge == this
                             // use a pointer instead of making "isBridge" and "asBridge" virtual so it's safe
                             // to call asBridge() from the destructor
 
-    bool mInfiniteFarClip; // if TRUE, frustum culling ignores far clip plane
+    bool mInfiniteFarClip; // if true, frustum culling ignores far clip plane
     const bool mRenderByGroup;
     U32 mVertexDataMask;
     F32 mSlopRatio; //percentage distance must change before drawables receive LOD update (default is 0.25);
-    bool mDepthMask; //if TRUE, objects in this partition will be written to depth during alpha rendering
+    bool mDepthMask; //if true, objects in this partition will be written to depth during alpha rendering
 };
 
 // class for creating bridges between spatial partitions
@@ -452,18 +452,18 @@ protected:
 public:
     typedef std::vector<LLPointer<LLSpatialBridge> > bridge_vector_t;
 
-    LLSpatialBridge(LLDrawable* root, BOOL render_by_group, U32 data_mask, LLViewerRegion* regionp);
+    LLSpatialBridge(LLDrawable* root, bool render_by_group, U32 data_mask, LLViewerRegion* regionp);
 
     void destroyTree();
 
-    virtual BOOL isSpatialBridge() const        { return TRUE; }
+    virtual bool isSpatialBridge() const        { return true; }
     virtual void updateSpatialExtents();
     virtual void updateBinRadius();
-    virtual void setVisible(LLCamera& camera_in, std::vector<LLDrawable*>* results = NULL, BOOL for_select = FALSE);
+    virtual void setVisible(LLCamera& camera_in, std::vector<LLDrawable*>* results = NULL, bool for_select = false);
     virtual void updateDistance(LLCamera& camera_in, bool force_update);
     virtual void makeActive();
-    virtual void move(LLDrawable *drawablep, LLSpatialGroup *curp, BOOL immediate = FALSE);
-    virtual BOOL updateMove();
+    virtual void move(LLDrawable *drawablep, LLSpatialGroup *curp, bool immediate = false);
+    virtual bool updateMove();
     virtual void shiftPos(const LLVector4a& vec);
     virtual void cleanupReferences();
     virtual LLSpatialPartition* asPartition()       { return this; }
@@ -678,7 +678,7 @@ class LLVolumeGeometryManager: public LLGeometryManager
     virtual void rebuildMesh(LLSpatialGroup* group);
     virtual void getGeometry(LLSpatialGroup* group);
     virtual void addGeometryCount(LLSpatialGroup* group, U32& vertex_count, U32& index_count);
-    U32 genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace** faces, U32 face_count, BOOL distance_sort = FALSE, BOOL batch_textures = FALSE, BOOL rigged = FALSE);
+    U32 genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace** faces, U32 face_count, bool distance_sort = false, bool batch_textures = false, bool rigged = false);
     void registerFace(LLSpatialGroup* group, LLFace* facep, U32 type);
 
 private:
@@ -729,7 +729,6 @@ class LLControlAVBridge : public LLVolumeBridge
     using super = LLVolumeBridge;
 public:
     LLControlAVBridge(LLDrawable* drawablep, LLViewerRegion* regionp);
-    virtual void updateSpatialExtents();
 };
 
 class LLHUDBridge : public LLVolumeBridge
diff --git a/indra/newview/llspeakers.cpp b/indra/newview/llspeakers.cpp
index b12e8d15fc..81002139be 100644
--- a/indra/newview/llspeakers.cpp
+++ b/indra/newview/llspeakers.cpp
@@ -50,16 +50,16 @@ LLSpeaker::LLSpeaker(const LLUUID& id, const std::string& name, const ESpeakerTy
     mStatus(LLSpeaker::STATUS_TEXT_ONLY),
     mLastSpokeTime(0.f),
     mSpeechVolume(0.f),
-    mHasSpoken(FALSE),
-    mHasLeftCurrentCall(FALSE),
+    mHasSpoken(false),
+    mHasLeftCurrentCall(false),
     mDotColor(LLColor4::white),
     mID(id),
-    mTyping(FALSE),
+    mTyping(false),
     mSortIndex(0),
     mType(type),
-    mIsModerator(FALSE),
-    mModeratorMutedVoice(FALSE),
-    mModeratorMutedText(FALSE)
+    mIsModerator(false),
+    mModeratorMutedVoice(false),
+    mModeratorMutedText(false)
 {
     if (name.empty() && type == SPEAKER_AGENT)
     {
@@ -181,13 +181,13 @@ LLSpeakerActionTimer::LLSpeakerActionTimer(action_callback_t action_cb, F32 acti
 {
 }
 
-BOOL LLSpeakerActionTimer::tick()
+bool LLSpeakerActionTimer::tick()
 {
     if (mActionCallback)
     {
-        return (BOOL)mActionCallback(mSpeakerId);
+        return (bool)mActionCallback(mSpeakerId);
     }
-    return TRUE;
+    return true;
 }
 
 void LLSpeakerActionTimer::unset()
@@ -361,7 +361,7 @@ void LLSpeakerMgr::initVoiceModerateMode()
     }
 }
 
-void LLSpeakerMgr::update(BOOL resort_ok)
+void LLSpeakerMgr::update(bool resort_ok)
 {
     if (!LLVoiceClient::getInstance())
     {
@@ -377,7 +377,7 @@ void LLSpeakerMgr::update(BOOL resort_ok)
     }
 
     // update status of all current speakers
-    BOOL voice_channel_active = (!mVoiceChannel && LLVoiceClient::getInstance()->inProximalChannel()) || (mVoiceChannel && mVoiceChannel->isActive());
+    bool voice_channel_active = (!mVoiceChannel && LLVoiceClient::getInstance()->inProximalChannel()) || (mVoiceChannel && mVoiceChannel->isActive());
     for (speaker_map_t::iterator speaker_it = mSpeakers.begin(); speaker_it != mSpeakers.end(); speaker_it++)
     {
         LLUUID speaker_id = speaker_it->first;
@@ -386,7 +386,7 @@ void LLSpeakerMgr::update(BOOL resort_ok)
         if (voice_channel_active && LLVoiceClient::getInstance()->getVoiceEnabled(speaker_id))
         {
             speakerp->mSpeechVolume = LLVoiceClient::getInstance()->getCurrentPower(speaker_id);
-            BOOL moderator_muted_voice = LLVoiceClient::getInstance()->getIsModeratorMuted(speaker_id);
+            bool moderator_muted_voice = LLVoiceClient::getInstance()->getIsModeratorMuted(speaker_id);
             if (moderator_muted_voice != speakerp->mModeratorMutedVoice)
             {
                 speakerp->mModeratorMutedVoice = moderator_muted_voice;
@@ -404,7 +404,7 @@ void LLSpeakerMgr::update(BOOL resort_ok)
                 if (speakerp->mStatus != LLSpeaker::STATUS_SPEAKING)
                 {
                     speakerp->mLastSpokeTime = mSpeechTimer.getElapsedTimeF32();
-                    speakerp->mHasSpoken = TRUE;
+                    speakerp->mHasSpoken = true;
                     fireEvent(new LLSpeakerUpdateSpeakerEvent(speakerp), "update_speaker");
                 }
                 speakerp->mStatus = LLSpeaker::STATUS_SPEAKING;
@@ -588,7 +588,7 @@ bool LLSpeakerMgr::removeSpeaker(const LLUUID& speaker_id)
     LL_DEBUGS("Speakers") << "Removed speaker " << speaker_id << LL_ENDL;
     fireEvent(new LLSpeakerListChangeEvent(this, speaker_id), "remove");
 
-    update(TRUE);
+    update(true);
 
     return false;
 }
@@ -606,7 +606,7 @@ LLPointer<LLSpeaker> LLSpeakerMgr::findSpeaker(const LLUUID& speaker_id)
     return found_it->second;
 }
 
-void LLSpeakerMgr::getSpeakerList(speaker_list_t* speaker_list, BOOL include_text)
+void LLSpeakerMgr::getSpeakerList(speaker_list_t* speaker_list, bool include_text)
 {
     speaker_list->clear();
     for (speaker_map_t::iterator speaker_it = mSpeakers.begin(); speaker_it != mSpeakers.end(); ++speaker_it)
@@ -630,7 +630,7 @@ bool LLSpeakerMgr::isSpeakerToBeRemoved(const LLUUID& speaker_id)
     return mSpeakerDelayRemover && mSpeakerDelayRemover->isTimerStarted(speaker_id);
 }
 
-void LLSpeakerMgr::setSpeakerTyping(const LLUUID& speaker_id, BOOL typing)
+void LLSpeakerMgr::setSpeakerTyping(const LLUUID& speaker_id, bool typing)
 {
     LLPointer<LLSpeaker> speakerp = findSpeaker(speaker_id);
     if (speakerp.notNull())
@@ -646,12 +646,12 @@ void LLSpeakerMgr::speakerChatted(const LLUUID& speaker_id)
     if (speakerp.notNull())
     {
         speakerp->mLastSpokeTime = mSpeechTimer.getElapsedTimeF32();
-        speakerp->mHasSpoken = TRUE;
+        speakerp->mHasSpoken = true;
         fireEvent(new LLSpeakerUpdateSpeakerEvent(speakerp), "update_speaker");
     }
 }
 
-BOOL LLSpeakerMgr::isVoiceActive()
+bool LLSpeakerMgr::isVoiceActive()
 {
     // mVoiceChannel = NULL means current voice channel, whatever it is
     return LLVoiceClient::getInstance()->voiceEnabled() && mVoiceChannel && mVoiceChannel->isActive();
@@ -696,7 +696,7 @@ void LLIMSpeakerMgr::setSpeakers(const LLSD& speakers)
 
             if ( speaker_it->second.isMap() )
             {
-                BOOL is_moderator = speakerp->mIsModerator;
+                bool is_moderator = speakerp->mIsModerator;
                 speakerp->mIsModerator = speaker_it->second["is_moderator"];
                 speakerp->mModeratorMutedText =
                     speaker_it->second["mutes"]["text"];
@@ -771,7 +771,7 @@ void LLIMSpeakerMgr::updateSpeakers(const LLSD& update)
 
                 if (agent_info.has("is_moderator"))
                 {
-                    BOOL is_moderator = speakerp->mIsModerator;
+                    bool is_moderator = speakerp->mIsModerator;
                     speakerp->mIsModerator = agent_info["is_moderator"];
                     // Fire event only if moderator changed
                     if ( is_moderator != speakerp->mIsModerator )
@@ -842,7 +842,7 @@ void LLIMSpeakerMgr::moderateVoiceParticipant(const LLUUID& avatar_id, bool unmu
     if (!speakerp || !mVoiceChannel) return;
 
     // *NOTE: mantipov: probably this condition will be incorrect when avatar will be blocked for
-    // text chat via moderation (LLSpeaker::mModeratorMutedText == TRUE)
+    // text chat via moderation (LLSpeaker::mModeratorMutedText == true)
     bool is_in_voice = speakerp->mStatus <= LLSpeaker::STATUS_VOICE_ACTIVE || speakerp->mStatus == LLSpeaker::STATUS_MUTED;
 
     // do not send voice moderation changes for avatars not in voice channel
diff --git a/indra/newview/llspeakers.h b/indra/newview/llspeakers.h
index c16da269e4..ad2461f60f 100644
--- a/indra/newview/llspeakers.h
+++ b/indra/newview/llspeakers.h
@@ -70,16 +70,16 @@ public:
     F32             mLastSpokeTime;     // timestamp when this speaker last spoke
     F32             mSpeechVolume;      // current speech amplitude (timea average rms amplitude?)
     std::string     mDisplayName;       // cache user name for this speaker
-    BOOL            mHasSpoken;         // has this speaker said anything this session?
-    BOOL            mHasLeftCurrentCall;    // has this speaker left the current voice call?
+    bool            mHasSpoken;         // has this speaker said anything this session?
+    bool            mHasLeftCurrentCall;    // has this speaker left the current voice call?
     LLColor4        mDotColor;
     LLUUID          mID;
-    BOOL            mTyping;
+    bool            mTyping;
     S32             mSortIndex;
     ESpeakerType    mType;
-    BOOL            mIsModerator;
-    BOOL            mModeratorMutedVoice;
-    BOOL            mModeratorMutedText;
+    bool            mIsModerator;
+    bool            mModeratorMutedVoice;
+    bool            mModeratorMutedText;
 };
 
 class LLSpeakerUpdateSpeakerEvent : public LLOldEvents::LLEvent
@@ -98,7 +98,7 @@ public:
     /*virtual*/ LLSD getValue();
 private:
     const LLUUID& mSpeakerID;
-    BOOL mIsModerator;
+    bool mIsModerator;
 };
 
 class LLSpeakerTextModerationEvent : public LLOldEvents::LLEvent
@@ -159,7 +159,7 @@ public:
      *
      * If action callback is not specified returns true. Instance will be deleted by LLEventTimer::updateClass().
      */
-    virtual BOOL tick();
+    virtual bool tick();
 
     /**
      * Clears the callback.
@@ -228,18 +228,18 @@ public:
     virtual ~LLSpeakerMgr();
 
     LLPointer<LLSpeaker> findSpeaker(const LLUUID& avatar_id);
-    void update(BOOL resort_ok);
-    void setSpeakerTyping(const LLUUID& speaker_id, BOOL typing);
+    void update(bool resort_ok);
+    void setSpeakerTyping(const LLUUID& speaker_id, bool typing);
     void speakerChatted(const LLUUID& speaker_id);
     LLPointer<LLSpeaker> setSpeaker(const LLUUID& id,
                     const std::string& name = LLStringUtil::null,
                     LLSpeaker::ESpeakerStatus status = LLSpeaker::STATUS_TEXT_ONLY,
                     LLSpeaker::ESpeakerType = LLSpeaker::SPEAKER_AGENT);
 
-    BOOL isVoiceActive();
+    bool isVoiceActive();
 
     typedef std::vector<LLPointer<LLSpeaker> > speaker_list_t;
-    void getSpeakerList(speaker_list_t* speaker_list, BOOL include_text);
+    void getSpeakerList(speaker_list_t* speaker_list, bool include_text);
     LLVoiceChannel* getVoiceChannel() { return mVoiceChannel; }
     void setVoiceChannel(LLVoiceChannel *voiceChannel) { mVoiceChannel = voiceChannel;  }
     const LLUUID getSessionID();
diff --git a/indra/newview/llspeakingindicatormanager.cpp b/indra/newview/llspeakingindicatormanager.cpp
index f16ab3b25a..ca99d351bb 100644
--- a/indra/newview/llspeakingindicatormanager.cpp
+++ b/indra/newview/llspeakingindicatormanager.cpp
@@ -109,9 +109,9 @@ private:
      * Changes state of indicators specified by LLUUIDs
      *
      * @param speakers_uuids - avatars' LLUUIDs whose speaking indicators should be switched
-     * @param switch_on - if TRUE specified indicator will be switched on, off otherwise.
+     * @param switch_on - if true specified indicator will be switched on, off otherwise.
      */
-    void switchSpeakerIndicators(const speaker_ids_t& speakers_uuids, BOOL switch_on);
+    void switchSpeakerIndicators(const speaker_ids_t& speakers_uuids, bool switch_on);
 
     /**
      * Ensures that passed instance of Speaking Indicator does not exist among registered ones.
@@ -154,7 +154,7 @@ void SpeakingIndicatorManager::registerSpeakingIndicator(const LLUUID& speaker_i
     mSpeakingIndicators.insert(value_type);
 
     speaker_ids_t speakers_uuids;
-    BOOL is_in_same_voice = LLVoiceClient::getInstance()->isParticipant(speaker_id);
+    bool is_in_same_voice = LLVoiceClient::getInstance()->isParticipant(speaker_id);
 
     speakers_uuids.insert(speaker_id);
     switchSpeakerIndicators(speakers_uuids, is_in_same_voice);
@@ -201,7 +201,7 @@ void SpeakingIndicatorManager::cleanupSingleton()
 
 void SpeakingIndicatorManager::sOnCurrentChannelChanged(const LLUUID& /*session_id*/)
 {
-    switchSpeakerIndicators(mSwitchedIndicatorsOn, FALSE);
+    switchSpeakerIndicators(mSwitchedIndicatorsOn, false);
     mSwitchedIndicatorsOn.clear();
 }
 
@@ -214,15 +214,15 @@ void SpeakingIndicatorManager::onParticipantsChanged()
 
     LL_DEBUGS("SpeakingIndicator") << "Switching all OFF, count: " << mSwitchedIndicatorsOn.size() << LL_ENDL;
     // switch all indicators off
-    switchSpeakerIndicators(mSwitchedIndicatorsOn, FALSE);
+    switchSpeakerIndicators(mSwitchedIndicatorsOn, false);
     mSwitchedIndicatorsOn.clear();
 
     LL_DEBUGS("SpeakingIndicator") << "Switching all ON, count: " << speakers_uuids.size() << LL_ENDL;
     // then switch current voice participants indicators on
-    switchSpeakerIndicators(speakers_uuids, TRUE);
+    switchSpeakerIndicators(speakers_uuids, true);
 }
 
-void SpeakingIndicatorManager::switchSpeakerIndicators(const speaker_ids_t& speakers_uuids, BOOL switch_on)
+void SpeakingIndicatorManager::switchSpeakerIndicators(const speaker_ids_t& speakers_uuids, bool switch_on)
 {
     LLVoiceChannel* voice_channel = LLVoiceChannel::getCurrentVoiceChannel();
     LLUUID session_id;
diff --git a/indra/newview/llsplitbutton.cpp b/indra/newview/llsplitbutton.cpp
index 5e363b358a..6c252ed31f 100644
--- a/indra/newview/llsplitbutton.cpp
+++ b/indra/newview/llsplitbutton.cpp
@@ -67,7 +67,7 @@ void LLSplitButton::onFocusLost()
     LLUICtrl::onFocusLost();
 }
 
-void LLSplitButton::setFocus(BOOL b)
+void LLSplitButton::setFocus(bool b)
 {
     LLUICtrl::setFocus(b);
 
@@ -75,12 +75,12 @@ void LLSplitButton::setFocus(BOOL b)
     {
         if (mItemsPanel && mItemsPanel->getVisible())
         {
-            mItemsPanel->setFocus(TRUE);
+            mItemsPanel->setFocus(true);
         }
     }
 }
 
-void LLSplitButton::setEnabled(BOOL enabled)
+void LLSplitButton::setEnabled(bool enabled)
 {
     LLView::setEnabled(enabled);
     mArrowBtn->setEnabled(enabled);
@@ -93,7 +93,7 @@ void LLSplitButton::onArrowBtnDown()
     {
         showButtons();
 
-        setFocus(TRUE);
+        setFocus(true);
 
         if (mArrowBtn->hasMouseCapture() || mShownItem->hasMouseCapture())
         {
@@ -126,14 +126,14 @@ void LLSplitButton::onItemSelected(LLUICtrl* ctrl)
     gFocusMgr.setKeyboardFocus(NULL);
 }
 
-BOOL LLSplitButton::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLSplitButton::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     gFocusMgr.setMouseCapture(NULL);
 
     if (mShownItem->parentPointInView(x, y))
     {
         onItemSelected(mShownItem);
-        return TRUE;
+        return true;
     }
 
     for (std::list<LLButton*>::const_iterator it = mHidenItems.begin(); it != mHidenItems.end(); ++it)
@@ -147,10 +147,10 @@ BOOL LLSplitButton::handleMouseUp(S32 x, S32 y, MASK mask)
         if (item->parentPointInView(panel_x, panel_y))
         {
             onItemSelected(item);
-            return TRUE;
+            return true;
         }
     }
-    return TRUE;
+    return true;
 }
 
 void LLSplitButton::showButtons()
@@ -161,21 +161,21 @@ void LLSplitButton::showButtons()
     // effectively putting us into a special draw layer
     gViewerWindow->addPopup(this);
 
-    mItemsPanel->setFocus(TRUE);
+    mItemsPanel->setFocus(true);
 
     //push arrow button down and show the item buttons
-    mArrowBtn->setToggleState(TRUE);
-    mItemsPanel->setVisible(TRUE);
+    mArrowBtn->setToggleState(true);
+    mItemsPanel->setVisible(true);
 
-    setUseBoundingRect(TRUE);
+    setUseBoundingRect(true);
 }
 
 void LLSplitButton::hideButtons()
 {
-    mItemsPanel->setVisible(FALSE);
-    mArrowBtn->setToggleState(FALSE);
+    mItemsPanel->setVisible(false);
+    mArrowBtn->setToggleState(false);
 
-    setUseBoundingRect(FALSE);
+    setUseBoundingRect(false);
     gViewerWindow->removePopup(this);
 }
 
@@ -216,7 +216,7 @@ LLSplitButton::LLSplitButton(const LLSplitButton::Params& p)
 
     //a panel for hidden item buttons
     LLPanel::Params panel_params = p.items_panel;
-    mItemsPanel= prepareItemsPanel(panel_params, p.items.numValidElements());
+    mItemsPanel= prepareItemsPanel(panel_params, static_cast<S32>(p.items.numValidElements()));
     addChild(mItemsPanel);
 
 
diff --git a/indra/newview/llsplitbutton.h b/indra/newview/llsplitbutton.h
index 4571a233fe..b6ee47a9c7 100644
--- a/indra/newview/llsplitbutton.h
+++ b/indra/newview/llsplitbutton.h
@@ -71,8 +71,8 @@ public:
 
     //Overridden
     virtual void    onFocusLost();
-    virtual void    setFocus(BOOL b);
-    virtual void    setEnabled(BOOL enabled);
+    virtual void    setFocus(bool b);
+    virtual void    setEnabled(bool enabled);
 
     //Callbacks
     void    onArrowBtnDown();
@@ -80,7 +80,7 @@ public:
     void    onItemSelected(LLUICtrl* ctrl);
     void    setSelectionCallback(commit_callback_t cb) { mSelectionCallback = cb; }
 
-    virtual BOOL handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseUp(S32 x, S32 y, MASK mask);
 
     virtual void    showButtons();
     virtual void    hideButtons();
diff --git a/indra/newview/llsprite.cpp b/indra/newview/llsprite.cpp
index 60cc406742..e51aeb6080 100644
--- a/indra/newview/llsprite.cpp
+++ b/indra/newview/llsprite.cpp
@@ -60,8 +60,8 @@ LLSprite::LLSprite(const LLUUID &image_uuid) :
     mPitch(0.f),
     mYaw(0.f),
     mPosition(0.0f, 0.0f, 0.0f),
-    mFollow(TRUE),
-    mUseCameraUp(TRUE),
+    mFollow(true),
+    mUseCameraUp(true),
     mColor(0.5f, 0.5f, 0.5f, 1.0f),
     mTexMode(GL_REPLACE)
 {
@@ -266,12 +266,12 @@ void LLSprite::setYaw(F32 yaw)
     mYaw = yaw;
 }
 
-void LLSprite::setFollow(const BOOL follow)
+void LLSprite::setFollow(const bool follow)
 {
     mFollow = follow;
 }
 
-void LLSprite::setUseCameraUp(const BOOL use_up)
+void LLSprite::setUseCameraUp(const bool use_up)
 {
     mUseCameraUp = use_up;
 }
diff --git a/indra/newview/llsprite.h b/indra/newview/llsprite.h
index 604ece43d2..44439bd30c 100644
--- a/indra/newview/llsprite.h
+++ b/indra/newview/llsprite.h
@@ -61,8 +61,8 @@ public:
     void setPitch(const F32 pitch);
     void setSize(const F32 width, const F32 height);
     void setYaw(const F32 yaw);
-    void setFollow(const BOOL follow);
-    void setUseCameraUp(const BOOL use_up);
+    void setFollow(const bool follow);
+    void setUseCameraUp(const bool use_up);
 
     void setTexMode(LLGLenum mode);
     void setColor(const LLColor4 &color);
@@ -85,8 +85,8 @@ private:
     F32 mPitch;
     F32 mYaw;
     LLVector3 mPosition;
-    BOOL mFollow;
-    BOOL mUseCameraUp;
+    bool mFollow;
+    bool mUseCameraUp;
 
     LLColor4 mColor;
     LLGLenum mTexMode;
diff --git a/indra/newview/llstartup.cpp b/indra/newview/llstartup.cpp
index 96ff0fceb4..a8fc1451f5 100644
--- a/indra/newview/llstartup.cpp
+++ b/indra/newview/llstartup.cpp
@@ -40,10 +40,6 @@
 #include "llviewermedia_streamingaudio.h"
 #include "llaudioengine.h"
 
-#ifdef LL_FMODSTUDIO
-# include "llaudioengine_fmodstudio.h"
-#endif
-
 #ifdef LL_OPENAL
 #include "llaudioengine_openal.h"
 #endif
@@ -337,10 +333,18 @@ void update_texture_fetch()
 
 void set_flags_and_update_appearance()
 {
-    LLAppearanceMgr::instance().setAttachmentInvLinkEnable(true);
-    LLAppearanceMgr::instance().updateAppearanceFromCOF(true, true, no_op);
+    // this may be called from a coroutine but has many side effects
+    // in non-thread-safe classes, post to main loop
+    auto work = []()
+        {
+            LLAppearanceMgr::instance().setAttachmentInvLinkEnable(true);
+            LLAppearanceMgr::instance().updateAppearanceFromCOF(true, true, no_op);
+
+            LLInventoryModelBackgroundFetch::instance().start();
+        };
+
+    LLAppViewer::instance()->postToMainCoro(work);
 
-    LLInventoryModelBackgroundFetch::instance().start();
 }
 
 // Returns false to skip other idle processing. Should only return
@@ -385,7 +389,7 @@ bool idle_startup()
 
     const std::string delims (" ");
     std::string system;
-    int begIdx, endIdx;
+    size_t begIdx, endIdx;
     std::string osString = LLOSInfo::instance().getOSStringSimple();
 
     begIdx = osString.find_first_not_of (delims);
@@ -544,7 +548,7 @@ bool idle_startup()
                    LLVersionInfo::instance().getMajor(),
                    LLVersionInfo::instance().getMinor(),
                    LLVersionInfo::instance().getPatch(),
-                   FALSE,
+                   false,
                    std::string(),
                    responder,
                    failure_is_fatal,
@@ -615,7 +619,7 @@ bool idle_startup()
             F32 xfer_throttle_bps = gSavedSettings.getF32("XferThrottle");
             if (xfer_throttle_bps > 1.f)
             {
-                gXferManager->setUseAckThrottling(TRUE);
+                gXferManager->setUseAckThrottling(true);
                 gXferManager->setAckThrottleBPS(xfer_throttle_bps);
             }
             gAssetStorage = new LLViewerAssetStorage(msg, gXferManager);
@@ -629,13 +633,13 @@ bool idle_startup()
             if (inBandwidth != 0.f)
             {
                 LL_DEBUGS("AppInit") << "Setting packetring incoming bandwidth to " << inBandwidth << LL_ENDL;
-                msg->mPacketRing.setUseInThrottle(TRUE);
+                msg->mPacketRing.setUseInThrottle(true);
                 msg->mPacketRing.setInBandwidth(inBandwidth);
             }
             if (outBandwidth != 0.f)
             {
                 LL_DEBUGS("AppInit") << "Setting packetring outgoing bandwidth to " << outBandwidth << LL_ENDL;
-                msg->mPacketRing.setUseOutThrottle(TRUE);
+                msg->mPacketRing.setUseOutThrottle(true);
                 msg->mPacketRing.setOutBandwidth(outBandwidth);
             }
         }
@@ -647,20 +651,11 @@ bool idle_startup()
         // or audio cues in connection UI.
         //-------------------------------------------------
 
-        if (FALSE == gSavedSettings.getBOOL("NoAudio"))
+        if (false == gSavedSettings.getBOOL("NoAudio"))
         {
             delete gAudiop;
             gAudiop = NULL;
 
-#ifdef LL_FMODSTUDIO
-#if !LL_WINDOWS
-            if (NULL == getenv("LL_BAD_FMODSTUDIO_DRIVER"))
-#endif // !LL_WINDOWS
-            {
-                gAudiop = (LLAudioEngine *) new LLAudioEngine_FMODSTUDIO(gSavedSettings.getBOOL("FMODExProfilerEnable"));
-            }
-#endif
-
 #ifdef LL_OPENAL
 #if !LL_WINDOWS
             if (NULL == getenv("LL_BAD_OPENAL_DRIVER"))
@@ -681,21 +676,10 @@ bool idle_startup()
 #endif
                 if (gAudiop->init(window_handle, LLAppViewer::instance()->getSecondLifeTitle()))
                 {
-                    if (FALSE == gSavedSettings.getBOOL("UseMediaPluginsForStreamingAudio"))
-                    {
-                        LL_INFOS("AppInit") << "Using default impl to render streaming audio" << LL_ENDL;
-                        gAudiop->setStreamingAudioImpl(gAudiop->createDefaultStreamingAudioImpl());
-                    }
-
-                    // if the audio engine hasn't set up its own preferred handler for streaming audio
-                    // then set up the generic streaming audio implementation which uses media plugins
-                    if (NULL == gAudiop->getStreamingAudioImpl())
-                    {
-                        LL_INFOS("AppInit") << "Using media plugins to render streaming audio" << LL_ENDL;
-                        gAudiop->setStreamingAudioImpl(new LLStreamingAudio_MediaPlugins());
-                    }
+                    LL_INFOS("AppInit") << "Using media plugins to render streaming audio" << LL_ENDL;
+                    gAudiop->setStreamingAudioImpl(new LLStreamingAudio_MediaPlugins());
 
-                    gAudiop->setMuted(TRUE);
+                    gAudiop->setMuted(true);
                 }
                 else
                 {
@@ -723,15 +707,15 @@ bool idle_startup()
         // Previous initializeLoginInfo may have generated user credentials.  Re-check them.
         if (gUserCredential.isNull())
         {
-            show_connect_box = TRUE;
+            show_connect_box = true;
         }
         else if (gSavedSettings.getBOOL("AutoLogin"))
         {
             // Log into last account
             gRememberPassword = true;
             gRememberUser = true;
-            gSavedSettings.setBOOL("RememberPassword", TRUE);
-            gSavedSettings.setBOOL("RememberUser", TRUE);
+            gSavedSettings.setBOOL("RememberPassword", true);
+            gSavedSettings.setBOOL("RememberUser", true);
             show_connect_box = false;
         }
         else if (gSavedSettings.getLLSD("UserLoginInfo").size() == 3)
@@ -745,7 +729,7 @@ bool idle_startup()
         {
             gRememberPassword = gSavedSettings.getBOOL("RememberPassword");
             gRememberUser = gSavedSettings.getBOOL("RememberUser");
-            show_connect_box = TRUE;
+            show_connect_box = true;
         }
 
         //setup map of datetime strings to codes and slt & local time offset from utc
@@ -754,7 +738,7 @@ bool idle_startup()
 
         // Go to the next startup state
         LLStartUp::setStartupState( STATE_BROWSER_INIT );
-        return FALSE;
+        return false;
     }
 
 
@@ -766,7 +750,7 @@ bool idle_startup()
         display_startup();
         // LLViewerMedia::initBrowser();
         LLStartUp::setStartupState( STATE_LOGIN_SHOW );
-        return FALSE;
+        return false;
     }
 
 
@@ -808,7 +792,7 @@ bool idle_startup()
                 gUserCredential = gLoginHandler.initializeLoginInfo();
             }
             // Make sure the process dialog doesn't hide things
-            gViewerWindow->setShowProgress(FALSE);
+            gViewerWindow->setShowProgress(false);
             // Show the login dialog
             login_show();
             // connect dialog is already shown, so fill in the names
@@ -838,9 +822,9 @@ bool idle_startup()
             LLStartUp::setStartupState( STATE_LOGIN_CLEANUP );
         }
 
-        gViewerWindow->setNormalControlsVisible( FALSE );
-        gLoginMenuBarView->setVisible( TRUE );
-        gLoginMenuBarView->setEnabled( TRUE );
+        gViewerWindow->setNormalControlsVisible( false );
+        gLoginMenuBarView->setVisible( true );
+        gLoginMenuBarView->setEnabled( true );
         show_debug_menus();
 
         // Hide the splash screen
@@ -861,7 +845,7 @@ bool idle_startup()
 #endif
         display_startup();
         timeout.reset();
-        return FALSE;
+        return false;
     }
 
     if (STATE_LOGIN_WAIT == LLStartUp::getStartupState())
@@ -877,7 +861,7 @@ bool idle_startup()
         // display() function will be the one to run display_startup()
         // Sleep so we don't spin the CPU
         ms_sleep(1);
-        return FALSE;
+        return false;
     }
 
     if (STATE_LOGIN_CLEANUP == LLStartUp::getStartupState())
@@ -893,7 +877,7 @@ bool idle_startup()
             // could then change the preferences to fix the issue.
 
             LLStartUp::setStartupState(STATE_LOGIN_SHOW);
-            return FALSE;
+            return false;
         }
 
         // reset the values that could have come in from a slurl
@@ -1038,14 +1022,14 @@ bool idle_startup()
 
         // Display the startup progress bar.
         gViewerWindow->initTextures(agent_location_id);
-        gViewerWindow->setShowProgress(TRUE);
-        gViewerWindow->setProgressCancelButtonVisible(TRUE, LLTrans::getString("Quit"));
+        gViewerWindow->setShowProgress(true);
+        gViewerWindow->setProgressCancelButtonVisible(true, LLTrans::getString("Quit"));
 
         gViewerWindow->revealIntroPanel();
 
         LLStartUp::setStartupState( STATE_LOGIN_AUTH_INIT );
 
-        return FALSE;
+        return false;
     }
 
     if(STATE_LOGIN_AUTH_INIT == LLStartUp::getStartupState())
@@ -1071,7 +1055,7 @@ bool idle_startup()
         login->connect(gUserCredential);
 
         LLStartUp::setStartupState( STATE_LOGIN_CURL_UNSTUCK );
-        return FALSE;
+        return false;
     }
 
     if(STATE_LOGIN_CURL_UNSTUCK == LLStartUp::getStartupState())
@@ -1082,7 +1066,7 @@ bool idle_startup()
         set_startup_status(progress, auth_desc, auth_message);
 
         LLStartUp::setStartupState( STATE_LOGIN_PROCESS_RESPONSE );
-        return FALSE;
+        return false;
     }
 
     if(STATE_LOGIN_PROCESS_RESPONSE == LLStartUp::getStartupState())
@@ -1200,7 +1184,7 @@ bool idle_startup()
                                 general_cert_done);
 
                             reset_login();
-                            gSavedSettings.setBOOL("AutoLogin", FALSE);
+                            gSavedSettings.setBOOL("AutoLogin", false);
                             show_connect_box = true;
                         }
                         if(certificate)
@@ -1227,7 +1211,7 @@ bool idle_startup()
                                                          general_cert_done);
 
                                 reset_login();
-                                gSavedSettings.setBOOL("AutoLogin", FALSE);
+                                gSavedSettings.setBOOL("AutoLogin", false);
                                 show_connect_box = true;
 
                             }
@@ -1271,10 +1255,10 @@ bool idle_startup()
                 LLNotificationsUtil::add("ErrorMessage", args, LLSD(), login_alert_done);
                 transition_back_to_login_panel(emsg.str());
                 show_connect_box = true;
-                return FALSE;
+                return false;
             }
         }
-        return FALSE;
+        return false;
     }
 
     //---------------------------------------------------------------------
@@ -1296,7 +1280,7 @@ bool idle_startup()
 
         // Since we connected, save off the settings so the user doesn't have to
         // type the name/password again if we crash.
-        gSavedSettings.saveToFile(gSavedSettings.getString("ClientSettingsFile"), TRUE);
+        gSavedSettings.saveToFile(gSavedSettings.getString("ClientSettingsFile"), true);
         LLUIColorTable::instance().saveUserSettings();
 
         display_startup();
@@ -1377,7 +1361,7 @@ bool idle_startup()
 
         LLStartUp::setStartupState( STATE_MULTIMEDIA_INIT );
 
-        return FALSE;
+        return false;
     }
 
 
@@ -1390,7 +1374,7 @@ bool idle_startup()
         LLStartUp::multimediaInit();
         LLStartUp::setStartupState( STATE_FONT_INIT );
         display_startup();
-        return FALSE;
+        return false;
     }
 
     // Loading fonts takes several seconds
@@ -1399,7 +1383,7 @@ bool idle_startup()
         LLStartUp::fontInit();
         LLStartUp::setStartupState( STATE_SEED_GRANTED_WAIT );
         display_startup();
-        return FALSE;
+        return false;
     }
 
     //---------------------------------------------------------------------
@@ -1453,7 +1437,7 @@ bool idle_startup()
             }
         }
         display_startup();
-        return FALSE;
+        return false;
     }
 
 
@@ -1478,10 +1462,10 @@ bool idle_startup()
 
         if ( gViewerWindow != NULL)
         {   // This isn't the first logon attempt, so show the UI
-            gViewerWindow->setNormalControlsVisible( TRUE );
+            gViewerWindow->setNormalControlsVisible( true );
         }
-        gLoginMenuBarView->setVisible( FALSE );
-        gLoginMenuBarView->setEnabled( FALSE );
+        gLoginMenuBarView->setVisible( false );
+        gLoginMenuBarView->setEnabled( false );
         display_startup();
 
         // direct logging to the debug console's line buffer
@@ -1506,7 +1490,7 @@ bool idle_startup()
         display_startup();
 
         #ifndef LL_RELEASE_FOR_DOWNLOAD
-            gMessageSystem->setTimeDecodes( TRUE );             // Time the decode of each msg
+            gMessageSystem->setTimeDecodes( true );             // Time the decode of each msg
             gMessageSystem->setTimeDecodesSpamThreshold( 0.05f );  // Spam if a single msg takes over 50ms to decode
         #endif
         display_startup();
@@ -1623,7 +1607,7 @@ bool idle_startup()
 
         gUseCircuitCallbackCalled = false;
 
-        msg->enableCircuit(gFirstSim, TRUE);
+        msg->enableCircuit(gFirstSim, true);
         // now, use the circuit info to tell simulator about us!
         LL_INFOS("AppInit") << "viewer: UserLoginLocationReply() Enabling " << gFirstSim << " with code " << msg->mOurCircuitCode << LL_ENDL;
         msg->newMessageFast(_PREHASH_UseCircuitCode);
@@ -1634,7 +1618,7 @@ bool idle_startup()
         msg->sendReliable(
             gFirstSim,
             gSavedSettings.getS32("UseCircuitCodeMaxRetries"),
-            FALSE,
+            false,
             (F32Seconds)gSavedSettings.getF32("UseCircuitCodeTimeout"),
             use_circuit_callback,
             NULL);
@@ -1642,7 +1626,7 @@ bool idle_startup()
         timeout.reset();
         display_startup();
 
-        return FALSE;
+        return false;
     }
 
     //---------------------------------------------------------------------
@@ -1657,7 +1641,7 @@ bool idle_startup()
             LLStartUp::setStartupState( STATE_AGENT_SEND );
         }
         pump_idle_startup_network();
-        return FALSE;
+        return false;
     }
 
     //---------------------------------------------------------------------
@@ -1687,7 +1671,7 @@ bool idle_startup()
         // But not on first login, because you can't see your avatar then
         if (!gAgent.isFirstLogin())
         {
-            LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, TRUE);
+            LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, true);
             effectp->setPositionGlobal(gAgent.getPositionGlobal());
             effectp->setColor(LLColor4U(gAgent.getEffectColor()));
             LLHUDManager::getInstance()->sendEffects();
@@ -1697,7 +1681,7 @@ bool idle_startup()
 
         timeout.reset();
         display_startup();
-        return FALSE;
+        return false;
     }
 
     //---------------------------------------------------------------------
@@ -1748,7 +1732,7 @@ bool idle_startup()
             }
             reset_login();
         }
-        return FALSE;
+        return false;
     }
 
     //---------------------------------------------------------------------
@@ -1802,7 +1786,7 @@ bool idle_startup()
         display_startup();
         LLStartUp::setStartupState(STATE_INVENTORY_SKEL);
         display_startup();
-        return FALSE;
+        return false;
     }
 
     if (STATE_INVENTORY_SKEL == LLStartUp::getStartupState())
@@ -1834,7 +1818,7 @@ bool idle_startup()
         display_startup();
         LLStartUp::setStartupState(STATE_INVENTORY_SEND2);
         display_startup();
-        return FALSE;
+        return false;
     }
 
     if (STATE_INVENTORY_SEND2 == LLStartUp::getStartupState())
@@ -1914,7 +1898,7 @@ bool idle_startup()
         // visible.  JC
         if (show_hud || gSavedSettings.getBOOL("ShowTutorial"))
         {
-            LLFloaterReg::showInstance("hud", LLSD(), FALSE);
+            LLFloaterReg::showInstance("hud", LLSD(), false);
         }
         display_startup();
 
@@ -1951,7 +1935,7 @@ bool idle_startup()
         LLStartUp::setStartupState(STATE_INVENTORY_CALLBACKS );
         display_startup();
 
-        return FALSE;
+        return false;
     }
 
     //---------------------------------------------------------------------
@@ -1962,7 +1946,7 @@ bool idle_startup()
         if (!LLInventoryModel::isSysFoldersReady())
         {
             display_startup();
-            return FALSE;
+            return false;
         }
 
         LLInventoryModelBackgroundFetch::instance().start();
@@ -2010,7 +1994,7 @@ bool idle_startup()
         LLStartUp::setStartupState( STATE_MISC );
         display_startup();
 
-        return FALSE;
+        return false;
     }
 
 
@@ -2050,12 +2034,12 @@ bool idle_startup()
 
             if (gSavedSettings.getBOOL("ShowHelpOnFirstLogin"))
             {
-                gSavedSettings.setBOOL("HelpFloaterOpen", TRUE);
+                gSavedSettings.setBOOL("HelpFloaterOpen", true);
             }
 
             // Set the show start location to true, now that the user has logged
             // on with this install.
-            gSavedSettings.setBOOL("ShowStartLocation", TRUE);
+            gSavedSettings.setBOOL("ShowStartLocation", true);
         }
 
         display_startup();
@@ -2077,7 +2061,7 @@ bool idle_startup()
         display_startup();
 
         // We're successfully logged in.
-        gSavedSettings.setBOOL("FirstLoginThisInstall", FALSE);
+        gSavedSettings.setBOOL("FirstLoginThisInstall", false);
 
         LLFloaterReg::showInitialVisibleInstances();
 
@@ -2111,8 +2095,8 @@ bool idle_startup()
                 if (item_id.notNull() && asset_id.notNull())
                 {
                     // Could schedule and delay these for later.
-                    const BOOL no_inform_server = FALSE;
-                    const BOOL no_deactivate_similar = FALSE;
+                    const bool no_inform_server = false;
+                    const bool no_deactivate_similar = false;
                     LLGestureMgr::instance().activateGestureWithAsset(item_id, asset_id,
                                          no_inform_server,
                                          no_deactivate_similar);
@@ -2125,7 +2109,7 @@ bool idle_startup()
             LLGestureMgr::instance().setFetchIDs(item_ids);
             LLGestureMgr::instance().startFetch();
         }
-        gDisplaySwapBuffers = TRUE;
+        gDisplaySwapBuffers = true;
         display_startup();
 
         LLMessageSystem* msg = gMessageSystem;
@@ -2168,13 +2152,13 @@ bool idle_startup()
                     && gSavedSettings.getBOOL("RestoreCameraPosOnLogin"))
                 {
                     // restore old camera pos
-                    gAgentCamera.setFocusOnAvatar(FALSE, FALSE);
+                    gAgentCamera.setFocusOnAvatar(false, false);
                     gAgentCamera.setCameraPosAndFocusGlobal(gSavedSettings.getVector3d("CameraPosOnLogout"), gSavedSettings.getVector3d("FocusPosOnLogout"), LLUUID::null);
-                    BOOL limit_hit = FALSE;
+                    bool limit_hit = false;
                     gAgentCamera.calcCameraPositionTargetGlobal(&limit_hit);
                     if (limit_hit)
                     {
-                        gAgentCamera.setFocusOnAvatar(TRUE, FALSE);
+                        gAgentCamera.setFocusOnAvatar(true, false);
                     }
                     gAgentCamera.stopCameraAnimation();
                 }
@@ -2211,7 +2195,7 @@ bool idle_startup()
 
         LLStartUp::setStartupState( STATE_PRECACHE );
         timeout.reset();
-        return FALSE;
+        return false;
     }
 
     if (STATE_PRECACHE == LLStartUp::getStartupState())
@@ -2237,7 +2221,7 @@ bool idle_startup()
         if (isAgentAvatarValid() && !gAgent.isFirstLogin() && !gAgent.isOutfitChosen())
         {
             gAgentWearables.notifyLoadingStarted();
-            gAgent.setOutfitChosen(TRUE);
+            gAgent.setOutfitChosen(true);
             gAgentWearables.sendDummyAgentWearablesUpdate();
             callAfterCOFFetch(set_flags_and_update_appearance);
         }
@@ -2270,7 +2254,7 @@ bool idle_startup()
             display_startup();
         }
 
-        return TRUE;
+        return true;
     }
 
     if (STATE_WEARABLES_WAIT == LLStartUp::getStartupState())
@@ -2316,7 +2300,7 @@ bool idle_startup()
             {
                 LL_DEBUGS("Avatar") << "avatar fully loaded" << LL_ENDL;
                 LLStartUp::setStartupState( STATE_CLEANUP );
-                return TRUE;
+                return true;
             }
         }
         else
@@ -2327,7 +2311,7 @@ bool idle_startup()
                 // We have our clothing, proceed.
                 LL_DEBUGS("Avatar") << "wearables loaded" << LL_ENDL;
                 LLStartUp::setStartupState( STATE_CLEANUP );
-                return TRUE;
+                return true;
             }
         }
         //fall through this frame to STATE_CLEANUP
@@ -2356,7 +2340,7 @@ bool idle_startup()
         LL_DEBUGS("AppInit") << "Done releasing bitmap" << LL_ENDL;
         //gViewerWindow->revealIntroPanel();
         gViewerWindow->setStartupComplete();
-        gViewerWindow->setProgressCancelButtonVisible(FALSE);
+        gViewerWindow->setProgressCancelButtonVisible(false);
         display_startup();
 
         // We're not away from keyboard, even though login might have taken
@@ -2424,10 +2408,10 @@ bool idle_startup()
 
         LLPerfStats::StatsRecorder::setAutotuneInit();
 
-        return TRUE;
+        return true;
     }
 
-    return TRUE;
+    return true;
 }
 
 //
@@ -2441,7 +2425,7 @@ void login_show()
     // Hide the toolbars: may happen to come back here if login fails after login agent but before login in region
     if (gToolBarView)
     {
-        gToolBarView->setVisible(FALSE);
+        gToolBarView->setVisible(false);
     }
 
     LLPanelLogin::show( gViewerWindow->getWindowRectScaled(), login_callback, NULL );
@@ -2463,7 +2447,7 @@ void login_callback(S32 option, void *userdata)
         if (!gSavedSettings.getBOOL("RememberPassword"))
         {
             // turn off the setting and write out to disk
-            gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile") , TRUE );
+            gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile") , true );
             LLUIColorTable::instance().saveUserSettings();
         }
 
@@ -2952,7 +2936,7 @@ void LLStartUp::loadInitialOutfit( const std::string& outfit_folder_name,
         LL_DEBUGS() << "initial outfit category id: " << cat_id << LL_ENDL;
     }
 
-    gAgent.setOutfitChosen(TRUE);
+    gAgent.setOutfitChosen(true);
     gAgentWearables.sendDummyAgentWearablesUpdate();
 }
 
@@ -3001,7 +2985,7 @@ std::string LLStartUp::startupStateToString(EStartupState state)
         RTNENUM( STATE_AGENT_SEND );
         RTNENUM( STATE_AGENT_WAIT );
         RTNENUM( STATE_INVENTORY_SEND );
-        RTNENUM( STATE_INVENTORY_CALLBACKS );
+        RTNENUM(STATE_INVENTORY_CALLBACKS );
         RTNENUM( STATE_INVENTORY_SKEL );
         RTNENUM( STATE_INVENTORY_SEND2 );
         RTNENUM( STATE_MISC );
@@ -3050,13 +3034,18 @@ void reset_login()
 
     if ( gViewerWindow )
     {   // Hide menus and normal buttons
-        gViewerWindow->setNormalControlsVisible( FALSE );
-        gLoginMenuBarView->setVisible( TRUE );
-        gLoginMenuBarView->setEnabled( TRUE );
+        gViewerWindow->setNormalControlsVisible( false );
+        gLoginMenuBarView->setVisible( true );
+        gLoginMenuBarView->setEnabled( true );
     }
 
     // Hide any other stuff
     LLFloaterReg::hideVisibleInstances();
+
+    if (LLStartUp::getStartupState() > STATE_WORLD_INIT)
+    {
+        gViewerWindow->resetStatusBarContainer();
+    }
     LLStartUp::setStartupState( STATE_BROWSER_INIT );
 
     if (LLVoiceClient::instanceExists())
@@ -3437,7 +3426,7 @@ void trust_cert_done(const LLSD& notification, const LLSD& response)
         }
         case OPT_CANCEL_TRUST:
             reset_login();
-            gSavedSettings.setBOOL("AutoLogin", FALSE);
+            gSavedSettings.setBOOL("AutoLogin", false);
             LLStartUp::setStartupState( STATE_LOGIN_SHOW );
         default:
             LLPanelLogin::giveFocus();
@@ -3656,7 +3645,7 @@ bool process_login_success_response()
         gFirstSim.set(sim_ip_str, sim_port);
         if (gFirstSim.isOk())
         {
-            gMessageSystem->enableCircuit(gFirstSim, TRUE);
+            gMessageSystem->enableCircuit(gFirstSim, true);
         }
     }
     std::string region_x_str = response["region_x"];
@@ -3672,7 +3661,7 @@ bool process_login_success_response()
     if (!look_at_str.empty())
     {
         size_t len = look_at_str.size();
-        LLMemoryStream mstr((U8*)look_at_str.c_str(), len);
+        LLMemoryStream mstr((U8*)look_at_str.c_str(), static_cast<S32>(len));
         LLSD sd = LLSDSerialize::fromNotation(mstr, len);
         gAgentStartLookAt = ll_vector3_from_sd(sd);
     }
@@ -3710,7 +3699,7 @@ bool process_login_success_response()
     if(!home_location.empty())
     {
         size_t len = home_location.size();
-        LLMemoryStream mstr((U8*)home_location.c_str(), len);
+        LLMemoryStream mstr((U8*)home_location.c_str(), static_cast<S32>(len));
         LLSD sd = LLSDSerialize::fromNotation(mstr, len);
         S32 region_x = sd["region_handle"][0].asInteger();
         S32 region_y = sd["region_handle"][1].asInteger();
@@ -3755,7 +3744,7 @@ bool process_login_success_response()
             // outfit is chosen on COF contents, initial outfit
             // requested and available, etc.
 
-            //gAgent.setGenderChosen(TRUE);
+            //gAgent.setGenderChosen(true);
         }
 
         bool pacific_daylight_time = false;
@@ -3901,6 +3890,6 @@ void transition_back_to_login_panel(const std::string& emsg)
 {
     // Bounce back to the login screen.
     reset_login(); // calls LLStartUp::setStartupState( STATE_LOGIN_SHOW );
-    gSavedSettings.setBOOL("AutoLogin", FALSE);
+    gSavedSettings.setBOOL("AutoLogin", false);
 }
 
diff --git a/indra/newview/llstatusbar.cpp b/indra/newview/llstatusbar.cpp
index eecf9c60b6..1bab602364 100644
--- a/indra/newview/llstatusbar.cpp
+++ b/indra/newview/llstatusbar.cpp
@@ -124,7 +124,7 @@ LLStatusBar::LLStatusBar(const LLRect& rect)
     setRect(rect);
 
     // status bar can possible overlay menus?
-    setMouseOpaque(FALSE);
+    setMouseOpaque(false);
 
     mBalanceTimer = new LLFrameTimer();
     mHealthTimer = new LLFrameTimer();
@@ -155,13 +155,13 @@ void LLStatusBar::draw()
     LLPanel::draw();
 }
 
-BOOL LLStatusBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLStatusBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     show_navbar_context_menu(this,x,y);
-    return TRUE;
+    return true;
 }
 
-BOOL LLStatusBar::postBuild()
+bool LLStatusBar::postBuild()
 {
     gMenuBarView->setRightMouseDownCallback(boost::bind(&show_navbar_context_menu, _1, _2, _3));
 
@@ -247,22 +247,22 @@ BOOL LLStatusBar::postBuild()
     mPanelPresetsCameraPulldown = new LLPanelPresetsCameraPulldown();
     addChild(mPanelPresetsCameraPulldown);
     mPanelPresetsCameraPulldown->setFollows(FOLLOWS_TOP|FOLLOWS_RIGHT);
-    mPanelPresetsCameraPulldown->setVisible(FALSE);
+    mPanelPresetsCameraPulldown->setVisible(false);
 
     mPanelPresetsPulldown = new LLPanelPresetsPulldown();
     addChild(mPanelPresetsPulldown);
     mPanelPresetsPulldown->setFollows(FOLLOWS_TOP|FOLLOWS_RIGHT);
-    mPanelPresetsPulldown->setVisible(FALSE);
+    mPanelPresetsPulldown->setVisible(false);
 
     mPanelVolumePulldown = new LLPanelVolumePulldown();
     addChild(mPanelVolumePulldown);
     mPanelVolumePulldown->setFollows(FOLLOWS_TOP|FOLLOWS_RIGHT);
-    mPanelVolumePulldown->setVisible(FALSE);
+    mPanelVolumePulldown->setVisible(false);
 
     mPanelNearByMedia = new LLPanelNearByMedia();
     addChild(mPanelNearByMedia);
     mPanelNearByMedia->setFollows(FOLLOWS_TOP|FOLLOWS_RIGHT);
-    mPanelNearByMedia->setVisible(FALSE);
+    mPanelNearByMedia->setVisible(false);
 
     updateBalancePanelPosition();
 
@@ -270,7 +270,7 @@ BOOL LLStatusBar::postBuild()
     mFilterEdit = getChild<LLSearchEditor>( "search_menu_edit" );
     mSearchPanel = getChild<LLPanel>( "menu_search_panel" );
 
-    BOOL search_panel_visible = gSavedSettings.getBOOL("MenuSearch");
+    bool search_panel_visible = gSavedSettings.getBOOL("MenuSearch");
     mSearchPanel->setVisible(search_panel_visible);
     mFilterEdit->setKeystrokeCallback(boost::bind(&LLStatusBar::onUpdateFilterTerm, this));
     mFilterEdit->setCommitCallback(boost::bind(&LLStatusBar::onUpdateFilterTerm, this));
@@ -282,7 +282,7 @@ BOOL LLStatusBar::postBuild()
         updateMenuSearchPosition();
     }
 
-    return TRUE;
+    return true;
 }
 
 // Per-frame updates of visibility
@@ -451,7 +451,7 @@ void LLStatusBar::sendMoneyBalanceRequest()
     }
     // Double amount of retries due to this request initially happening during busy stage
     // Ideally this should be turned into a capability
-    gMessageSystem->sendReliable(gAgent.getRegionHost(), LL_DEFAULT_RELIABLE_RETRIES * 2, TRUE, LL_PING_BASED_TIMEOUT_DUMMY, NULL, NULL);
+    gMessageSystem->sendReliable(gAgent.getRegionHost(), LL_DEFAULT_RELIABLE_RETRIES * 2, true, LL_PING_BASED_TIMEOUT_DUMMY, NULL, NULL);
 }
 
 
@@ -502,7 +502,7 @@ void LLStatusBar::setLandCommitted(S32 committed)
     mSquareMetersCommitted = committed;
 }
 
-BOOL LLStatusBar::isUserTiered() const
+bool LLStatusBar::isUserTiered() const
 {
     return (mSquareMetersCredit > 0);
 }
@@ -548,10 +548,10 @@ void LLStatusBar::onMouseEnterPresetsCamera()
     // show the master presets pull-down
     LLUI::getInstance()->clearPopups();
     LLUI::getInstance()->addPopup(mPanelPresetsCameraPulldown);
-    mPanelNearByMedia->setVisible(FALSE);
-    mPanelVolumePulldown->setVisible(FALSE);
-    mPanelPresetsPulldown->setVisible(FALSE);
-    mPanelPresetsCameraPulldown->setVisible(TRUE);
+    mPanelNearByMedia->setVisible(false);
+    mPanelVolumePulldown->setVisible(false);
+    mPanelPresetsPulldown->setVisible(false);
+    mPanelPresetsCameraPulldown->setVisible(true);
 }
 
 void LLStatusBar::onMouseEnterPresets()
@@ -572,9 +572,9 @@ void LLStatusBar::onMouseEnterPresets()
     // show the master presets pull-down
     LLUI::getInstance()->clearPopups();
     LLUI::getInstance()->addPopup(mPanelPresetsPulldown);
-    mPanelNearByMedia->setVisible(FALSE);
-    mPanelVolumePulldown->setVisible(FALSE);
-    mPanelPresetsPulldown->setVisible(TRUE);
+    mPanelNearByMedia->setVisible(false);
+    mPanelVolumePulldown->setVisible(false);
+    mPanelPresetsPulldown->setVisible(true);
 }
 
 void LLStatusBar::onMouseEnterVolume()
@@ -596,10 +596,10 @@ void LLStatusBar::onMouseEnterVolume()
     // show the master volume pull-down
     LLUI::getInstance()->clearPopups();
     LLUI::getInstance()->addPopup(mPanelVolumePulldown);
-    mPanelPresetsCameraPulldown->setVisible(FALSE);
-    mPanelPresetsPulldown->setVisible(FALSE);
-    mPanelNearByMedia->setVisible(FALSE);
-    mPanelVolumePulldown->setVisible(TRUE);
+    mPanelPresetsCameraPulldown->setVisible(false);
+    mPanelPresetsPulldown->setVisible(false);
+    mPanelNearByMedia->setVisible(false);
+    mPanelVolumePulldown->setVisible(true);
 }
 
 void LLStatusBar::onMouseEnterNearbyMedia()
@@ -621,10 +621,10 @@ void LLStatusBar::onMouseEnterNearbyMedia()
     LLUI::getInstance()->clearPopups();
     LLUI::getInstance()->addPopup(mPanelNearByMedia);
 
-    mPanelPresetsCameraPulldown->setVisible(FALSE);
-    mPanelPresetsPulldown->setVisible(FALSE);
-    mPanelVolumePulldown->setVisible(FALSE);
-    mPanelNearByMedia->setVisible(TRUE);
+    mPanelPresetsCameraPulldown->setVisible(false);
+    mPanelPresetsPulldown->setVisible(false);
+    mPanelVolumePulldown->setVisible(false);
+    mPanelNearByMedia->setVisible(true);
 }
 
 
@@ -658,7 +658,7 @@ void LLStatusBar::onClickFps(void* data)
     LLFloaterReg::toggleInstance("mpv_performance");
 }
 
-BOOL can_afford_transaction(S32 cost)
+bool can_afford_transaction(S32 cost)
 {
     return((cost <= 0)||((gStatusBar) && (gStatusBar->getBalance() >=cost)));
 }
diff --git a/indra/newview/llstatusbar.h b/indra/newview/llstatusbar.h
index 650d7d6c40..7e1ecf08ca 100644
--- a/indra/newview/llstatusbar.h
+++ b/indra/newview/llstatusbar.h
@@ -64,8 +64,8 @@ public:
 
     /*virtual*/ void draw();
 
-    /*virtual*/ BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool handleRightMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool postBuild();
 
     // MANIPULATORS
     void        setBalance(S32 balance);
@@ -88,7 +88,7 @@ public:
     S32         getBalance() const;
     S32         getHealth() const;
 
-    BOOL isUserTiered() const;
+    bool isUserTiered() const;
     S32 getSquareMetersCredit() const;
     S32 getSquareMetersCommitted() const;
     S32 getSquareMetersLeft() const;
@@ -149,7 +149,7 @@ private:
 };
 
 // *HACK: Status bar owns your cached money balance. JC
-BOOL can_afford_transaction(S32 cost);
+bool can_afford_transaction(S32 cost);
 
 extern LLStatusBar *gStatusBar;
 
diff --git a/indra/newview/llsurface.cpp b/indra/newview/llsurface.cpp
index 55ecc7ccc5..e6bced5c92 100644
--- a/indra/newview/llsurface.cpp
+++ b/indra/newview/llsurface.cpp
@@ -90,7 +90,7 @@ LLSurface::LLSurface(U32 type, LLViewerRegion *regionp) :
     // One of each for each camera
     mVisiblePatchCount = 0;
 
-    mHasZData = FALSE;
+    mHasZData = false;
     // "uninitialized" min/max z
     mMinZ = 10000.f;
     mMaxZ = -10000.f;
@@ -243,7 +243,7 @@ void LLSurface::createSTexture()
             }
         }
 
-        mSTexturep = LLViewerTextureManager::getLocalTexture(raw.get(), FALSE);
+        mSTexturep = LLViewerTextureManager::getLocalTexture(raw.get(), false);
         mSTexturep->dontDiscard();
         gGL.getTexUnit(0)->bind(mSTexturep);
         mSTexturep->setAddressMode(LLTexUnit::TAM_CLAMP);
@@ -268,7 +268,7 @@ void LLSurface::createWaterTexture()
             }
         }
 
-        mWaterTexturep = LLViewerTextureManager::getLocalTexture(raw.get(), FALSE);
+        mWaterTexturep = LLViewerTextureManager::getLocalTexture(raw.get(), false);
         mWaterTexturep->dontDiscard();
         gGL.getTexUnit(0)->bind(mWaterTexturep);
         mWaterTexturep->setAddressMode(LLTexUnit::TAM_CLAMP);
@@ -695,7 +695,7 @@ bool LLSurface::idleUpdate(F32 max_update_time)
 template bool LLSurface::idleUpdate</*PBR=*/false>(F32 max_update_time);
 template bool LLSurface::idleUpdate</*PBR=*/true>(F32 max_update_time);
 
-void LLSurface::decompressDCTPatch(LLBitPack &bitpack, LLGroupHeader *gopp, BOOL b_large_patch)
+void LLSurface::decompressDCTPatch(LLBitPack &bitpack, LLGroupHeader *gopp, bool b_large_patch)
 {
 
     LLPatchHeader  ph;
@@ -762,16 +762,16 @@ void LLSurface::decompressDCTPatch(LLBitPack &bitpack, LLGroupHeader *gopp, BOOL
 }
 
 
-// Retrurns TRUE if "position" is within the bounds of surface.
+// Retrurns true if "position" is within the bounds of surface.
 // "position" is region-local
-BOOL LLSurface::containsPosition(const LLVector3 &position)
+bool LLSurface::containsPosition(const LLVector3 &position)
 {
     if (position.mV[VX] < 0.0f  ||  position.mV[VX] > mMetersPerEdge ||
         position.mV[VY] < 0.0f  ||  position.mV[VY] > mMetersPerEdge)
     {
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 
@@ -1034,8 +1034,8 @@ void LLSurface::createPatchData()
         for (i=0; i<mPatchesPerEdge; i++)
         {
             patchp = getPatch(i, j);
-            patchp->mHasReceivedData = FALSE;
-            patchp->mSTexUpdate = TRUE;
+            patchp->mHasReceivedData = false;
+            patchp->mSTexUpdate = true;
 
             S32 data_offset = i * mGridsPerPatchEdge + j * mGridsPerPatchEdge * mGridsPerEdge;
 
@@ -1222,13 +1222,13 @@ F32 LLSurface::getWaterHeight() const
 }
 
 
-BOOL LLSurface::generateWaterTexture(const F32 x, const F32 y,
+bool LLSurface::generateWaterTexture(const F32 x, const F32 y,
                                      const F32 width, const F32 height)
 {
     LL_PROFILE_ZONE_SCOPED
     if (!getWaterTexture())
     {
-        return FALSE;
+        return false;
     }
 
     S32 tex_width = mWaterTexturep->getWidth();
@@ -1314,5 +1314,5 @@ BOOL LLSurface::generateWaterTexture(const F32 x, const F32 y,
     }
 
     mWaterTexturep->setSubImage(raw, x_begin, y_begin, x_end - x_begin, y_end - y_begin);
-    return TRUE;
+    return true;
 }
diff --git a/indra/newview/llsurface.h b/indra/newview/llsurface.h
index 093b141271..324296a4d3 100644
--- a/indra/newview/llsurface.h
+++ b/indra/newview/llsurface.h
@@ -84,7 +84,7 @@ public:
     void disconnectNeighbor(LLSurface *neighborp);
     void disconnectAllNeighbors();
 
-    virtual void decompressDCTPatch(LLBitPack &bitpack, LLGroupHeader *gopp, BOOL b_large_patch);
+    virtual void decompressDCTPatch(LLBitPack &bitpack, LLGroupHeader *gopp, bool b_large_patch);
     virtual void updatePatchVisibilities(LLAgent &agent);
 
     inline F32 getZ(const U32 k) const              { return mSurfaceZ[k]; }
@@ -115,7 +115,7 @@ public:
     template<bool PBR>
     bool idleUpdate(F32 max_update_time);
 
-    BOOL containsPosition(const LLVector3 &position);
+    bool containsPosition(const LLVector3 &position);
 
     void moveZ(const S32 x, const S32 y, const F32 delta);
 
@@ -129,7 +129,7 @@ public:
 
     LLViewerTexture *getSTexture();
     LLViewerTexture *getWaterTexture();
-    BOOL hasZData() const                           { return mHasZData; }
+    bool hasZData() const                           { return mHasZData; }
 
     void dirtyAllPatches(); // Use this to dirty all patches when changing terrain parameters
 
@@ -179,7 +179,7 @@ protected:
     void createPatchData();     // Allocates memory for patches.
     void destroyPatchData();    // Deallocates memory for patches.
 
-    BOOL generateWaterTexture(const F32 x, const F32 y,
+    bool generateWaterTexture(const F32 x, const F32 y,
                         const F32 width, const F32 height);     // Generate texture from composition values.
 
     //F32 updateTexture(LLSurfacePatch *ppatch);
@@ -214,7 +214,7 @@ protected:
 
     LLPatchVertexArray mPVArray;
 
-    BOOL        mHasZData;              // We've received any patch data for this surface.
+    bool        mHasZData;              // We've received any patch data for this surface.
     F32         mMinZ;                  // min z for this region (during the session)
     F32         mMaxZ;                  // max z for this region (during the session)
 
diff --git a/indra/newview/llsurfacepatch.cpp b/indra/newview/llsurfacepatch.cpp
index b26d48b07f..042d770550 100644
--- a/indra/newview/llsurfacepatch.cpp
+++ b/indra/newview/llsurfacepatch.cpp
@@ -47,11 +47,11 @@ extern U64MicrosecondsImplicit gFrameTime;
 extern LLPipeline gPipeline;
 
 LLSurfacePatch::LLSurfacePatch()
-:   mHasReceivedData(FALSE),
-    mSTexUpdate(FALSE),
-    mDirty(FALSE),
-    mDirtyZStats(TRUE),
-    mHeightsGenerated(FALSE),
+:   mHasReceivedData(false),
+    mSTexUpdate(false),
+    mDirty(false),
+    mDirtyZStats(true),
+    mHeightsGenerated(false),
     mDataOffset(0),
     mDataZ(NULL),
     mDataNorm(NULL),
@@ -78,7 +78,7 @@ LLSurfacePatch::LLSurfacePatch()
     }
     for (i = 0; i < 9; i++)
     {
-        mNormalsInvalid[i] = TRUE;
+        mNormalsInvalid[i] = true;
     }
 }
 
@@ -102,12 +102,12 @@ void LLSurfacePatch::dirty()
         LL_WARNS("Terrain") << "No viewer object for this surface patch!" << LL_ENDL;
     }
 
-    mDirtyZStats = TRUE;
-    mHeightsGenerated = FALSE;
+    mDirtyZStats = true;
+    mHeightsGenerated = false;
 
     if (!mDirty)
     {
-        mDirty = TRUE;
+        mDirty = true;
         mSurfacep->dirtySurfacePatch(this);
     }
 }
@@ -137,7 +137,7 @@ void LLSurfacePatch::disconnectNeighbor(LLSurface *surfacep)
             if (getNeighborPatch(i)->mSurfacep == surfacep)
             {
                 setNeighborPatch(i, NULL);
-                mNormalsInvalid[i] = TRUE;
+                mNormalsInvalid[i] = true;
             }
         }
     }
@@ -603,14 +603,14 @@ void LLSurfacePatch::updateVerticalStats()
 
     mSurfacep->mMaxZ = llmax(mMaxZ, mSurfacep->mMaxZ);
     mSurfacep->mMinZ = llmin(mMinZ, mSurfacep->mMinZ);
-    mSurfacep->mHasZData = TRUE;
+    mSurfacep->mHasZData = true;
     mSurfacep->getRegion()->calculateCenterGlobal();
 
     if (mVObjp)
     {
         mVObjp->dirtyPatch();
     }
-    mDirtyZStats = FALSE;
+    mDirtyZStats = false;
 }
 
 
@@ -624,7 +624,7 @@ void LLSurfacePatch::updateNormals()
     U32 grids_per_patch_edge = mSurfacep->getGridsPerPatchEdge();
     U32 grids_per_edge = mSurfacep->getGridsPerEdge();
 
-    BOOL dirty_patch = FALSE;
+    bool dirty_patch = false;
 
     U32 i, j;
     // update the east edge
@@ -637,7 +637,7 @@ void LLSurfacePatch::updateNormals()
             calcNormal<PBR>(grids_per_patch_edge - 2, j, 2);
         }
 
-        dirty_patch = TRUE;
+        dirty_patch = true;
     }
 
     // update the north edge
@@ -650,7 +650,7 @@ void LLSurfacePatch::updateNormals()
             calcNormal<PBR>(i, grids_per_patch_edge - 2, 2);
         }
 
-        dirty_patch = TRUE;
+        dirty_patch = true;
     }
 
     // update the west edge
@@ -661,7 +661,7 @@ void LLSurfacePatch::updateNormals()
             calcNormal<PBR>(0, j, 2);
             calcNormal<PBR>(1, j, 2);
         }
-        dirty_patch = TRUE;
+        dirty_patch = true;
     }
 
     // update the south edge
@@ -672,7 +672,7 @@ void LLSurfacePatch::updateNormals()
             calcNormal<PBR>(i, 0, 2);
             calcNormal<PBR>(i, 1, 2);
         }
-        dirty_patch = TRUE;
+        dirty_patch = true;
     }
 
     // Invalidating the northeast corner is different, because depending on what the adjacent neighbors are,
@@ -750,7 +750,7 @@ void LLSurfacePatch::updateNormals()
         calcNormal<PBR>(grids_per_patch_edge, grids_per_patch_edge - 1, 2);
         calcNormal<PBR>(grids_per_patch_edge - 1, grids_per_patch_edge, 2);
         calcNormal<PBR>(grids_per_patch_edge - 1, grids_per_patch_edge - 1, 2);
-        dirty_patch = TRUE;
+        dirty_patch = true;
     }
 
     // update the middle normals
@@ -763,7 +763,7 @@ void LLSurfacePatch::updateNormals()
                 calcNormal<PBR>(i, j, 2);
             }
         }
-        dirty_patch = TRUE;
+        dirty_patch = true;
     }
 
     if (dirty_patch)
@@ -773,7 +773,7 @@ void LLSurfacePatch::updateNormals()
 
     for (i = 0; i < 9; i++)
     {
-        mNormalsInvalid[i] = FALSE;
+        mNormalsInvalid[i] = false;
     }
 }
 
@@ -844,7 +844,7 @@ void LLSurfacePatch::updateNorthEdge()
 }
 
 
-BOOL LLSurfacePatch::updateTexture()
+bool LLSurfacePatch::updateTexture()
 {
     if (mSTexUpdate)        //  Update texture as needed
     {
@@ -867,11 +867,11 @@ BOOL LLSurfacePatch::updateTexture()
                 if (comp->generateHeights((F32)origin_region[VX], (F32)origin_region[VY],
                                           patch_size, patch_size))
                 {
-                    mHeightsGenerated = TRUE;
+                    mHeightsGenerated = true;
                 }
                 else
                 {
-                    return FALSE;
+                    return false;
                 }
             }
 
@@ -885,11 +885,11 @@ BOOL LLSurfacePatch::updateTexture()
                 }
             }
         }
-        return FALSE;
+        return false;
     }
     else
     {
-        return TRUE;
+        return true;
     }
 }
 
@@ -909,7 +909,7 @@ void LLSurfacePatch::updateGL()
     if (comp->generateMinimapTileLand((F32)origin_region[VX], (F32)origin_region[VY],
                               tex_patch_size, tex_patch_size))
     {
-        mSTexUpdate = FALSE;
+        mSTexUpdate = false;
 
         // Also generate the water texture
         mSurfacep->generateWaterTexture((F32)origin_region.mdV[VX], (F32)origin_region.mdV[VY],
@@ -919,13 +919,13 @@ void LLSurfacePatch::updateGL()
 
 void LLSurfacePatch::dirtyZ()
 {
-    mSTexUpdate = TRUE;
+    mSTexUpdate = true;
 
     // Invalidate all normals in this patch
     U32 i;
     for (i = 0; i < 9; i++)
     {
-        mNormalsInvalid[i] = TRUE;
+        mNormalsInvalid[i] = true;
     }
 
     // Invalidate normals in this and neighboring patches
@@ -933,12 +933,12 @@ void LLSurfacePatch::dirtyZ()
     {
         if (getNeighborPatch(i))
         {
-            getNeighborPatch(i)->mNormalsInvalid[gDirOpposite[i]] = TRUE;
+            getNeighborPatch(i)->mNormalsInvalid[gDirOpposite[i]] = true;
             getNeighborPatch(i)->dirty();
             if (i < 4)
             {
-                getNeighborPatch(i)->mNormalsInvalid[gDirAdjacent[gDirOpposite[i]][0]] = TRUE;
-                getNeighborPatch(i)->mNormalsInvalid[gDirAdjacent[gDirOpposite[i]][1]] = TRUE;
+                getNeighborPatch(i)->mNormalsInvalid[gDirAdjacent[gDirOpposite[i]][0]] = true;
+                getNeighborPatch(i)->mNormalsInvalid[gDirAdjacent[gDirOpposite[i]][1]] = true;
             }
         }
     }
@@ -974,7 +974,7 @@ void LLSurfacePatch::setOriginGlobal(const LLVector3d &origin_global)
     mCenterRegion.mV[VX] = origin_region.mV[VX] + 0.5f*mSurfacep->getGridsPerPatchEdge()*mSurfacep->getMetersPerGrid();
     mCenterRegion.mV[VY] = origin_region.mV[VY] + 0.5f*mSurfacep->getGridsPerPatchEdge()*mSurfacep->getMetersPerGrid();
 
-    mVisInfo.mbIsVisible = FALSE;
+    mVisInfo.mbIsVisible = false;
     mVisInfo.mDistance = 512.0f;
     mVisInfo.mRenderLevel = 0;
     mVisInfo.mRenderStride = mSurfacep->getGridsPerPatchEdge();
@@ -984,8 +984,8 @@ void LLSurfacePatch::setOriginGlobal(const LLVector3d &origin_global)
 void LLSurfacePatch::connectNeighbor(LLSurfacePatch *neighbor_patchp, const U32 direction)
 {
     llassert(neighbor_patchp);
-    mNormalsInvalid[direction] = TRUE;
-    neighbor_patchp->mNormalsInvalid[gDirOpposite[direction]] = TRUE;
+    mNormalsInvalid[direction] = true;
+    neighbor_patchp->mNormalsInvalid[gDirOpposite[direction]] = true;
 
     setNeighborPatch(direction, neighbor_patchp);
     neighbor_patchp->setNeighborPatch(gDirOpposite[direction], this);
@@ -1076,11 +1076,11 @@ void LLSurfacePatch::updateVisibility()
                 }
             }
         }
-        mVisInfo.mbIsVisible = TRUE;
+        mVisInfo.mbIsVisible = true;
     }
     else
     {
-        mVisInfo.mbIsVisible = FALSE;
+        mVisInfo.mbIsVisible = false;
     }
 }
 
@@ -1095,7 +1095,7 @@ LLVector3 LLSurfacePatch::getOriginAgent() const
     return gAgent.getPosAgentFromGlobal(mOriginGlobal);
 }
 
-BOOL LLSurfacePatch::getVisible() const
+bool LLSurfacePatch::getVisible() const
 {
     return mVisInfo.mbIsVisible;
 }
@@ -1112,10 +1112,10 @@ S32 LLSurfacePatch::getRenderLevel() const
 
 void LLSurfacePatch::setHasReceivedData()
 {
-    mHasReceivedData = TRUE;
+    mHasReceivedData = true;
 }
 
-BOOL LLSurfacePatch::getHasReceivedData() const
+bool LLSurfacePatch::getHasReceivedData() const
 {
     return mHasReceivedData;
 }
@@ -1180,11 +1180,11 @@ F32 LLSurfacePatch::getMaxComposition() const
 void LLSurfacePatch::setNeighborPatch(const U32 direction, LLSurfacePatch *neighborp)
 {
     mNeighborPatches[direction] = neighborp;
-    mNormalsInvalid[direction] = TRUE;
+    mNormalsInvalid[direction] = true;
     if (direction < 4)
     {
-        mNormalsInvalid[gDirAdjacent[direction][0]] = TRUE;
-        mNormalsInvalid[gDirAdjacent[direction][1]] = TRUE;
+        mNormalsInvalid[gDirAdjacent[direction][0]] = true;
+        mNormalsInvalid[gDirAdjacent[direction][1]] = true;
     }
 }
 
diff --git a/indra/newview/llsurfacepatch.h b/indra/newview/llsurfacepatch.h
index 94d471b43d..195250d2c0 100644
--- a/indra/newview/llsurfacepatch.h
+++ b/indra/newview/llsurfacepatch.h
@@ -44,13 +44,13 @@ class LLPatchVisibilityInfo
 {
 public:
     LLPatchVisibilityInfo() :
-        mbIsVisible(FALSE),
+        mbIsVisible(false),
         mDistance(0.f),
         mRenderLevel(0),
         mRenderStride(0) { };
     ~LLPatchVisibilityInfo() { };
 
-    BOOL mbIsVisible;
+    bool mbIsVisible;
     F32 mDistance;          // Distance from camera
     S32 mRenderLevel;
     U32 mRenderStride;
@@ -73,7 +73,7 @@ public:
 
     void colorPatch(const U8 r, const U8 g, const U8 b);
 
-    BOOL updateTexture();
+    bool updateTexture();
 
     void updateVerticalStats();
     void updateCompositionStats();
@@ -89,7 +89,7 @@ public:
 
     void dirtyZ(); // Dirty the z values of this patch
     void setHasReceivedData();
-    BOOL getHasReceivedData() const;
+    bool getHasReceivedData() const;
 
     F32 getDistance() const;
     F32 getMaxZ() const;
@@ -134,7 +134,7 @@ public:
     // +---+---+---+
 
 
-    BOOL getVisible() const;
+    bool getVisible() const;
     U32 getRenderStride() const;
     S32 getRenderLevel() const;
 
@@ -144,21 +144,21 @@ public:
     F32 *getDataZ() const                       { return mDataZ; }
 
     void dirty();           // Mark this surface patch as dirty...
-    void clearDirty()                           { mDirty = FALSE; }
+    void clearDirty()                           { mDirty = false; }
 
     void clearVObj();
 
 public:
-    BOOL mHasReceivedData;  // has the patch EVER received height data?
-    BOOL mSTexUpdate;       // Does the surface texture need to be updated?
+    bool mHasReceivedData;  // has the patch EVER received height data?
+    bool mSTexUpdate;       // Does the surface texture need to be updated?
 
 protected:
     LLSurfacePatch *mNeighborPatches[8]; // Adjacent patches
-    BOOL mNormalsInvalid[9];  // Which normals are invalid
+    bool mNormalsInvalid[9];  // Which normals are invalid
 
-    BOOL mDirty;
-    BOOL mDirtyZStats;
-    BOOL mHeightsGenerated;
+    bool mDirty;
+    bool mDirtyZStats;
+    bool mHeightsGenerated;
 
     U32 mDataOffset;
     F32 *mDataZ;
diff --git a/indra/newview/llsyswellitem.cpp b/indra/newview/llsyswellitem.cpp
index a79146ecc8..6da55b0a0a 100644
--- a/indra/newview/llsyswellitem.cpp
+++ b/indra/newview/llsyswellitem.cpp
@@ -68,9 +68,9 @@ void LLSysWellItem::onClickCloseBtn()
 }
 
 //---------------------------------------------------------------------------------
-BOOL LLSysWellItem::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLSysWellItem::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL res = LLPanel::handleMouseDown(x, y, mask);
+    bool res = LLPanel::handleMouseDown(x, y, mask);
     if(!mCloseBtn->getRect().pointInRect(x, y))
         mOnItemClick(this);
 
diff --git a/indra/newview/llsyswellitem.h b/indra/newview/llsyswellitem.h
index 005883460a..0a4e26cb98 100644
--- a/indra/newview/llsyswellitem.h
+++ b/indra/newview/llsyswellitem.h
@@ -55,7 +55,7 @@ public:
     LLUUID getID() { return mID; }
 
     // handlers
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask);
     virtual void onMouseEnter(S32 x, S32 y, MASK mask);
     virtual void onMouseLeave(S32 x, S32 y, MASK mask);
 
diff --git a/indra/newview/llsyswellwindow.cpp b/indra/newview/llsyswellwindow.cpp
index 5c31ad4feb..30142ad601 100644
--- a/indra/newview/llsyswellwindow.cpp
+++ b/indra/newview/llsyswellwindow.cpp
@@ -50,7 +50,7 @@ LLSysWellWindow::LLSysWellWindow(const LLSD& key) : LLTransientDockableFloater(N
 }
 
 //---------------------------------------------------------------------------------
-BOOL LLSysWellWindow::postBuild()
+bool LLSysWellWindow::postBuild()
 {
     mMessageList = getChild<LLFlatListView>("notification_list");
 
@@ -61,7 +61,7 @@ BOOL LLSysWellWindow::postBuild()
 }
 
 //---------------------------------------------------------------------------------
-void LLSysWellWindow::setMinimized(BOOL minimize)
+void LLSysWellWindow::setMinimized(bool minimize)
 {
     LLTransientDockableFloater::setMinimized(minimize);
 }
@@ -77,7 +77,7 @@ void LLSysWellWindow::handleReshape(const LLRect& rect, bool by_user)
 void LLSysWellWindow::onStartUpToastClick(S32 x, S32 y, MASK mask)
 {
     // just set floater visible. Screen channels will be cleared.
-    setVisible(TRUE);
+    setVisible(true);
 }
 
 void LLSysWellWindow::setSysWellChiclet(LLSysWellChiclet* chiclet)
@@ -114,7 +114,7 @@ void LLSysWellWindow::removeItemByID(const LLUUID& id)
     // hide chiclet window if there are no items left
     if(isWindowEmpty())
     {
-        setVisible(FALSE);
+        setVisible(false);
     }
 }
 
@@ -137,7 +137,7 @@ void LLSysWellWindow::initChannel()
 }
 
 //---------------------------------------------------------------------------------
-void LLSysWellWindow::setVisible(BOOL visible)
+void LLSysWellWindow::setVisible(bool visible)
 {
     if (visible)
     {
@@ -150,7 +150,7 @@ void LLSysWellWindow::setVisible(BOOL visible)
     }
 
     // do not show empty window
-    if (NULL == mMessageList || isWindowEmpty()) visible = FALSE;
+    if (NULL == mMessageList || isWindowEmpty()) visible = false;
 
     LLTransientDockableFloater::setVisible(visible);
 
@@ -198,7 +198,7 @@ void LLSysWellWindow::reshapeWindow()
         S32 newWidth = curRect.getWidth() < MIN_WINDOW_WIDTH ? MIN_WINDOW_WIDTH : curRect.getWidth();
 
         curRect.setLeftTopAndSize(curRect.mLeft, curRect.mTop, newWidth, new_window_height);
-        reshape(curRect.getWidth(), curRect.getHeight(), TRUE);
+        reshape(curRect.getWidth(), curRect.getHeight(), true);
         setRect(curRect);
     }
 
@@ -277,20 +277,20 @@ void LLIMWellWindow::ObjectRowPanel::onMouseLeave(S32 x, S32 y, MASK mask)
 
 //---------------------------------------------------------------------------------
 // virtual
-BOOL LLIMWellWindow::ObjectRowPanel::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLIMWellWindow::ObjectRowPanel::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // Pass the mouse down event to the chiclet (EXT-596).
     if (!mChiclet->pointInView(x, y) && !mCloseBtn->getRect().pointInRect(x, y)) // prevent double call of LLIMChiclet::onMouseDown()
     {
         mChiclet->onMouseDown();
-        return TRUE;
+        return true;
     }
 
     return LLPanel::handleMouseDown(x, y, mask);
 }
 
 // virtual
-BOOL LLIMWellWindow::ObjectRowPanel::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLIMWellWindow::ObjectRowPanel::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     return mChiclet->handleRightMouseDown(x, y, mask);
 }
@@ -323,9 +323,9 @@ LLIMWellWindow* LLIMWellWindow::findInstance(const LLSD& key /*= LLSD()*/)
     return LLFloaterReg::findTypedInstance<LLIMWellWindow>("im_well_window", key);
 }
 
-BOOL LLIMWellWindow::postBuild()
+bool LLIMWellWindow::postBuild()
 {
-    BOOL rv = LLSysWellWindow::postBuild();
+    bool rv = LLSysWellWindow::postBuild();
     setTitle(getString("title_im_well_window"));
 
     LLIMChiclet::sFindChicletsSignal.connect(boost::bind(&LLIMWellWindow::findObjectChiclet, this, _1));
@@ -375,7 +375,7 @@ void LLIMWellWindow::removeObjectRow(const LLUUID& notification_id)
     // hide chiclet window if there are no items left
     if(isWindowEmpty())
     {
-        setVisible(FALSE);
+        setVisible(false);
     }
 }
 
diff --git a/indra/newview/llsyswellwindow.h b/indra/newview/llsyswellwindow.h
index fb65680414..618a0e6812 100644
--- a/indra/newview/llsyswellwindow.h
+++ b/indra/newview/llsyswellwindow.h
@@ -48,7 +48,7 @@ public:
 
     LLSysWellWindow(const LLSD& key);
     virtual ~LLSysWellWindow();
-    BOOL postBuild();
+    bool postBuild();
 
     // other interface functions
     // check is window empty
@@ -59,11 +59,11 @@ public:
     LLPanel * findItemByID(const LLUUID& id);
 
     // Operating with outfit
-    virtual void setVisible(BOOL visible);
+    virtual void setVisible(bool visible);
     void adjustWindowPosition();
     /*virtual*/ void    setDocked(bool docked, bool pop_on_undock = true);
     // override LLFloater's minimization according to EXT-1216
-    /*virtual*/ void    setMinimized(BOOL minimize);
+    /*virtual*/ void    setMinimized(bool minimize);
     /*virtual*/ void    handleReshape(const LLRect& rect, bool by_user);
 
     void onStartUpToastClick(S32 x, S32 y, MASK mask);
@@ -71,8 +71,8 @@ public:
     void setSysWellChiclet(LLSysWellChiclet* chiclet);
 
     // size constants for the window and for its elements
-    static const S32 MAX_WINDOW_HEIGHT      = 200;
-    static const S32 MIN_WINDOW_WIDTH       = 318;
+    static constexpr S32 MAX_WINDOW_HEIGHT      = 200;
+    static constexpr S32 MIN_WINDOW_WIDTH       = 318;
 
 protected:
     // init Window's channel
@@ -111,7 +111,7 @@ public:
     static LLIMWellWindow* findInstance(const LLSD& key = LLSD());
     static void initClass() { getInstance(); }
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     void addObjectRow(const LLUUID& notification_id, bool new_message = false);
     void removeObjectRow(const LLUUID& notification_id);
@@ -133,8 +133,8 @@ private:
         virtual ~ObjectRowPanel();
         /*virtual*/ void onMouseEnter(S32 x, S32 y, MASK mask);
         /*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask);
-        /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-        /*virtual*/ BOOL handleRightMouseDown(S32 x, S32 y, MASK mask);
+        /*virtual*/ bool handleMouseDown(S32 x, S32 y, MASK mask);
+        /*virtual*/ bool handleRightMouseDown(S32 x, S32 y, MASK mask);
 
     private:
         void onClosePanel();
diff --git a/indra/newview/lltexturecache.cpp b/indra/newview/lltexturecache.cpp
index 56f26c953b..843da97089 100644
--- a/indra/newview/lltexturecache.cpp
+++ b/indra/newview/lltexturecache.cpp
@@ -96,7 +96,7 @@ private:
 
 public:
     LLTextureCacheWorker(LLTextureCache* cache, const LLUUID& id,
-                         U8* data, S32 datasize, S32 offset,
+                         const U8* data, S32 datasize, S32 offset,
                          S32 imagesize, // for writes
                          LLTextureCache::Responder* responder)
         : LLWorkerClass(cache, "LLTextureCacheWorker"),
@@ -108,7 +108,7 @@ public:
           mOffset(offset),
           mImageSize(imagesize),
           mImageFormat(IMG_CODEC_J2C),
-          mImageLocal(FALSE),
+          mImageLocal(false),
           mResponder(responder),
           mFileHandle(LLLFSThread::nullHandle()),
           mBytesToRead(0),
@@ -145,12 +145,12 @@ protected:
     LLUUID  mID;
 
     U8* mReadData;
-    U8* mWriteData;
+    const U8* mWriteData;
     S32 mDataSize;
     S32 mOffset;
     S32 mImageSize;
     EImageCodec mImageFormat;
-    BOOL mImageLocal;
+    bool mImageLocal;
     LLPointer<LLTextureCache::Responder> mResponder;
     LLLFSThread::handle_t mFileHandle;
     S32 mBytesToRead;
@@ -224,7 +224,7 @@ bool LLTextureCacheLocalFileWorker::doRead()
     else
     {
         mImageSize = local_size;
-        mImageLocal = TRUE;
+        mImageLocal = true;
     }
     return true;
 }
@@ -239,7 +239,7 @@ class LLTextureCacheRemoteWorker : public LLTextureCacheWorker
 {
 public:
     LLTextureCacheRemoteWorker(LLTextureCache* cache, const LLUUID& id,
-                         U8* data, S32 datasize, S32 offset,
+                         const U8* data, S32 datasize, S32 offset,
                          S32 imagesize, // for writes
                          LLPointer<LLImageRaw> raw, S32 discardlevel,
                          LLTextureCache::Responder* responder)
@@ -364,7 +364,7 @@ bool LLTextureCacheRemoteWorker::doRead()
             else
             {
                 mImageSize = local_size;
-                mImageLocal = TRUE;
+                mImageLocal = true;
             }
         }
         else
@@ -796,9 +796,9 @@ LLTextureCache::LLTextureCache(bool threaded)
       mListMutex(),
       mFastCacheMutex(),
       mHeaderAPRFile(NULL),
-      mReadOnly(TRUE), //do not allow to change the texture cache until setReadOnly() is called.
+      mReadOnly(true), //do not allow to change the texture cache until setReadOnly() is called.
       mTexturesSizeTotal(0),
-      mDoPurge(FALSE),
+      mDoPurge(false),
       mFastCachep(NULL),
       mFastCachePoolp(NULL),
       mFastCachePadBuffer(NULL)
@@ -873,7 +873,7 @@ std::string LLTextureCache::getTextureFileName(const LLUUID& id)
 }
 
 //debug
-BOOL LLTextureCache::isInCache(const LLUUID& id)
+bool LLTextureCache::isInCache(const LLUUID& id)
 {
     LLMutexLock lock(&mHeaderMutex);
     id_map_t::const_iterator iter = mHeaderIDMap.find(id);
@@ -882,7 +882,7 @@ BOOL LLTextureCache::isInCache(const LLUUID& id)
 }
 
 //debug
-BOOL LLTextureCache::isInLocal(const LLUUID& id)
+bool LLTextureCache::isInLocal(const LLUUID& id)
 {
     S32 local_size = 0;
     std::string local_filename;
@@ -894,7 +894,7 @@ BOOL LLTextureCache::isInLocal(const LLUUID& id)
         local_size = LLAPRFile::size(local_filename, getLocalAPRFilePool());
         if (local_size > 0)
         {
-            return TRUE ;
+            return true ;
         }
     }
 
@@ -904,7 +904,7 @@ BOOL LLTextureCache::isInLocal(const LLUUID& id)
         local_size = LLAPRFile::size(local_filename, getLocalAPRFilePool());
         if (local_size > 0)
         {
-            return TRUE ;
+            return true ;
         }
     }
 
@@ -914,11 +914,11 @@ BOOL LLTextureCache::isInLocal(const LLUUID& id)
         local_size = LLAPRFile::size(local_filename, getLocalAPRFilePool());
         if (local_size > 0)
         {
-            return TRUE ;
+            return true ;
         }
     }
 
-    return FALSE ;
+    return false ;
 }
 //////////////////////////////////////////////////////////////////////////////
 
@@ -982,14 +982,14 @@ void LLTextureCache::purgeCache(ELLPath location, bool remove_dir)
 }
 
 //is called in the main thread before initCache(...) is called.
-void LLTextureCache::setReadOnly(BOOL read_only)
+void LLTextureCache::setReadOnly(bool read_only)
 {
     mReadOnly = read_only ;
 }
 
 // Called in the main thread.
 // Returns the unused amount of max_size if any
-S64 LLTextureCache::initCache(ELLPath location, S64 max_size, BOOL texture_cache_mismatch)
+S64 LLTextureCache::initCache(ELLPath location, S64 max_size, bool texture_cache_mismatch)
 {
     llassert_always(getPending() == 0) ; //should not start accessing the texture cache before initialized.
 
@@ -1314,7 +1314,7 @@ bool LLTextureCache::updateEntry(S32& idx, Entry& entry, S32 new_image_size, S32
 
         if (purge)
         {
-            mDoPurge = TRUE;
+            mDoPurge = true;
         }
     }
 
@@ -1375,13 +1375,13 @@ U32 LLTextureCache::openAndReadEntries(std::vector<Entry>& entries)
 
 void LLTextureCache::writeEntriesAndClose(const std::vector<Entry>& entries)
 {
-    S32 num_entries = entries.size();
+    auto num_entries = entries.size();
     llassert_always(num_entries == mHeaderEntriesInfo.mEntries);
 
     if (!mReadOnly)
     {
         LLAPRFile* aprfile = openHeaderEntriesFile(false, (S32)sizeof(EntriesInfo));
-        for (S32 idx=0; idx<num_entries; idx++)
+        for (size_t idx=0; idx<num_entries; idx++)
         {
             S32 bytes_written = aprfile->write((void*)(&entries[idx]), (S32)sizeof(Entry));
             if(bytes_written != sizeof(Entry))
@@ -1961,7 +1961,7 @@ bool LLTextureCache::readComplete(handle_t handle, bool abort)
 }
 
 LLTextureCache::handle_t LLTextureCache::writeToCache(const LLUUID& id,
-                                                      U8* data, S32 datasize, S32 imagesize,
+                                                      const U8* data, S32 datasize, S32 imagesize,
                                                       LLPointer<LLImageRaw> rawimage, S32 discardlevel,
                                                       WriteResponder* responder)
 {
@@ -2047,6 +2047,9 @@ LLPointer<LLImageRaw> LLTextureCache::readFromFastCache(const LLUUID& id, S32& d
 bool LLTextureCache::writeToFastCache(LLUUID image_id, S32 id, LLPointer<LLImageRaw> raw, S32 discardlevel)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
+
+    LLImageDataSharedLock lock(raw);
+
     //rescale image if needed
     if (raw.isNull() || raw->isBufferInvalid() || !raw->getData())
     {
@@ -2282,11 +2285,11 @@ bool LLTextureCache::removeFromCache(const LLUUID& id)
 
 LLTextureCache::ReadResponder::ReadResponder()
     : mImageSize(0),
-      mImageLocal(FALSE)
+      mImageLocal(false)
 {
 }
 
-void LLTextureCache::ReadResponder::setData(U8* data, S32 datasize, S32 imagesize, S32 imageformat, BOOL imagelocal)
+void LLTextureCache::ReadResponder::setData(U8* data, S32 datasize, S32 imagesize, S32 imageformat, bool imagelocal)
 {
     if (mFormattedImage.notNull())
     {
diff --git a/indra/newview/lltexturecache.h b/indra/newview/lltexturecache.h
index 6aa3a51e18..faf722dc8f 100644
--- a/indra/newview/lltexturecache.h
+++ b/indra/newview/lltexturecache.h
@@ -87,24 +87,24 @@ public:
     class Responder : public LLResponder
     {
     public:
-        virtual void setData(U8* data, S32 datasize, S32 imagesize, S32 imageformat, BOOL imagelocal) = 0;
+        virtual void setData(U8* data, S32 datasize, S32 imagesize, S32 imageformat, bool imagelocal) = 0;
     };
 
     class ReadResponder : public Responder
     {
     public:
         ReadResponder();
-        void setData(U8* data, S32 datasize, S32 imagesize, S32 imageformat, BOOL imagelocal);
+        void setData(U8* data, S32 datasize, S32 imagesize, S32 imageformat, bool imagelocal);
         void setImage(LLImageFormatted* image) { mFormattedImage = image; }
     protected:
         LLPointer<LLImageFormatted> mFormattedImage;
         S32 mImageSize;
-        BOOL mImageLocal;
+        bool mImageLocal;
     };
 
     class WriteResponder : public Responder
     {
-        void setData(U8* data, S32 datasize, S32 imagesize, S32 imageformat, BOOL imagelocal)
+        void setData(U8* data, S32 datasize, S32 imagesize, S32 imageformat, bool imagelocal)
         {
             // not used
         }
@@ -116,8 +116,8 @@ public:
     /*virtual*/ size_t update(F32 max_time_ms);
 
     void purgeCache(ELLPath location, bool remove_dir = true);
-    void setReadOnly(BOOL read_only) ;
-    S64 initCache(ELLPath location, S64 maxsize, BOOL texture_cache_mismatch);
+    void setReadOnly(bool read_only) ;
+    S64 initCache(ELLPath location, S64 maxsize, bool texture_cache_mismatch);
 
     handle_t readFromCache(const std::string& local_filename, const LLUUID& id, S32 offset, S32 size,
                            ReadResponder* responder);
@@ -125,7 +125,7 @@ public:
     handle_t readFromCache(const LLUUID& id, S32 offset, S32 size,
                            ReadResponder* responder);
     bool readComplete(handle_t handle, bool abort);
-    handle_t writeToCache(const LLUUID& id, U8* data, S32 datasize, S32 imagesize, LLPointer<LLImageRaw> rawimage, S32 discardlevel,
+    handle_t writeToCache(const LLUUID& id, const U8* data, S32 datasize, S32 imagesize, LLPointer<LLImageRaw> rawimage, S32 discardlevel,
                           WriteResponder* responder);
     LLPointer<LLImageRaw> readFromFastCache(const LLUUID& id, S32& discardlevel);
     bool writeComplete(handle_t handle, bool abort = false);
@@ -140,14 +140,14 @@ public:
     void unlockWorkers() { mWorkersMutex.unlock(); }
 
     // debug
-    S32 getNumReads() { return mReaders.size(); }
-    S32 getNumWrites() { return mWriters.size(); }
+    S32 getNumReads() { return static_cast<S32>(mReaders.size()); }
+    S32 getNumWrites() { return static_cast<S32>(mWriters.size()); }
     S64Bytes getUsage() { return S64Bytes(mTexturesSizeTotal); }
     S64Bytes getMaxUsage() { return S64Bytes(sCacheMaxTexturesSize); }
     U32 getEntries() { return mHeaderEntriesInfo.mEntries; }
     U32 getMaxEntries() { return sCacheMaxEntries; };
-    BOOL isInCache(const LLUUID& id) ;
-    BOOL isInLocal(const LLUUID& id) ; //not thread safe at the moment
+    bool isInCache(const LLUUID& id) ;
+    bool isInLocal(const LLUUID& id) ; //not thread safe at the moment
 
 protected:
     // Accessed by LLTextureCacheWorker
@@ -214,7 +214,7 @@ private:
     typedef std::vector<std::pair<LLPointer<Responder>, bool> > responder_list_t;
     responder_list_t mCompletedList;
 
-    BOOL mReadOnly;
+    bool mReadOnly;
 
     // HEADERS (Include first mip)
     std::string mHeaderEntriesFileName;
diff --git a/indra/newview/lltexturectrl.cpp b/indra/newview/lltexturectrl.cpp
index 4744edd5a3..81a70a81cf 100644
--- a/indra/newview/lltexturectrl.cpp
+++ b/indra/newview/lltexturectrl.cpp
@@ -148,12 +148,12 @@ LLFloaterTexturePicker::LLFloaterTexturePicker(
     LLUUID image_asset_id,
     LLUUID default_image_asset_id,
     LLUUID blank_image_asset_id,
-    BOOL tentative,
-    BOOL allow_no_texture,
+    bool tentative,
+    bool allow_no_texture,
     const std::string& label,
     PermissionMask immediate_filter_perm_mask,
     PermissionMask dnd_filter_perm_mask,
-    BOOL can_apply_immediately,
+    bool can_apply_immediately,
     LLUIImagePtr fallback_image,
     EPickInventoryType pick_type)
 :   LLFloater(LLSD()),
@@ -168,12 +168,12 @@ LLFloaterTexturePicker::LLFloaterTexturePicker(
     mLabel(label),
     mTentativeLabel(NULL),
     mResolutionLabel(NULL),
-    mActive( TRUE ),
+    mActive( true ),
     mFilterEdit(NULL),
     mImmediateFilterPermMask(immediate_filter_perm_mask),
     mDnDFilterPermMask(dnd_filter_perm_mask),
     mContextConeOpacity(0.f),
-    mSelectedItemPinned( FALSE ),
+    mSelectedItemPinned( false ),
     mCanApply(true),
     mCanPreview(true),
     mLimitsSet(false),
@@ -184,12 +184,12 @@ LLFloaterTexturePicker::LLFloaterTexturePicker(
     mOnFloaterCloseCallback(NULL),
     mSetImageAssetIDCallback(NULL),
     mOnUpdateImageStatsCallback(NULL),
-    mBakeTextureEnabled(FALSE),
+    mBakeTextureEnabled(false),
     mInventoryPickType(pick_type)
 {
     mCanApplyImmediately = can_apply_immediately;
     buildFromFile("floater_texture_ctrl.xml");
-    setCanMinimize(FALSE);
+    setCanMinimize(false);
 }
 
 LLFloaterTexturePicker::~LLFloaterTexturePicker()
@@ -200,7 +200,7 @@ void LLFloaterTexturePicker::setImageID(const LLUUID& image_id, bool set_selecti
 {
     if( ((mImageAssetID != image_id) || mTentative) && mActive)
     {
-        mNoCopyTextureSelected = FALSE;
+        mNoCopyTextureSelected = false;
         mViewModel->setDirty(); // *TODO: shouldn't we be using setValue() here?
         mImageAssetID = image_id;
 
@@ -242,7 +242,7 @@ void LLFloaterTexturePicker::setImageID(const LLUUID& image_id, bool set_selecti
             }
             if (item_id.isNull())
             {
-                item_id = findItemID(mImageAssetID, FALSE);
+                item_id = findItemID(mImageAssetID, false);
             }
             if (item_id.isNull())
             {
@@ -254,8 +254,8 @@ void LLFloaterTexturePicker::setImageID(const LLUUID& image_id, bool set_selecti
                 if (itemp && !itemp->getPermissions().allowCopyBy(gAgent.getID()))
                 {
                     // no copy texture
-                    getChild<LLUICtrl>("apply_immediate_check")->setValue(FALSE);
-                    mNoCopyTextureSelected = TRUE;
+                    getChild<LLUICtrl>("apply_immediate_check")->setValue(false);
+                    mNoCopyTextureSelected = true;
                 }
             }
 
@@ -278,7 +278,7 @@ void LLFloaterTexturePicker::setImageIDFromItem(const LLInventoryItem* itemp, bo
     setImageID(asset_id, set_selection);
 }
 
-void LLFloaterTexturePicker::setActive( BOOL active )
+void LLFloaterTexturePicker::setActive( bool active )
 {
     if (!active && getChild<LLUICtrl>("Pipette")->getValue().asBoolean())
     {
@@ -287,7 +287,7 @@ void LLFloaterTexturePicker::setActive( BOOL active )
     mActive = active;
 }
 
-void LLFloaterTexturePicker::setCanApplyImmediately(BOOL b)
+void LLFloaterTexturePicker::setCanApplyImmediately(bool b)
 {
     mCanApplyImmediately = b;
 
@@ -415,14 +415,14 @@ bool LLFloaterTexturePicker::updateImageStats()
 }
 
 // virtual
-BOOL LLFloaterTexturePicker::handleDragAndDrop(
+bool LLFloaterTexturePicker::handleDragAndDrop(
         S32 x, S32 y, MASK mask,
-        BOOL drop,
+        bool drop,
         EDragAndDropType cargo_type, void *cargo_data,
         EAcceptance *accept,
         std::string& tooltip_msg)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     bool is_mesh = cargo_type == DAD_MESH;
     bool is_texture = cargo_type == DAD_TEXTURE;
@@ -446,9 +446,9 @@ BOOL LLFloaterTexturePicker::handleDragAndDrop(
     {
         LLInventoryItem *item = (LLInventoryItem *)cargo_data;
 
-        BOOL copy = item->getPermissions().allowCopyBy(gAgent.getID());
-        BOOL mod = item->getPermissions().allowModifyBy(gAgent.getID());
-        BOOL xfer = item->getPermissions().allowOperationBy(PERM_TRANSFER,
+        bool copy = item->getPermissions().allowCopyBy(gAgent.getID());
+        bool mod = item->getPermissions().allowModifyBy(gAgent.getID());
+        bool xfer = item->getPermissions().allowOperationBy(PERM_TRANSFER,
                                                             gAgent.getID());
 
         PermissionMask item_perm_mask = 0;
@@ -477,13 +477,13 @@ BOOL LLFloaterTexturePicker::handleDragAndDrop(
         *accept = ACCEPT_NO;
     }
 
-    handled = TRUE;
+    handled = true;
     LL_DEBUGS("UserInput") << "dragAndDrop handled by LLFloaterTexturePicker " << getName() << LL_ENDL;
 
     return handled;
 }
 
-BOOL LLFloaterTexturePicker::handleKeyHere(KEY key, MASK mask)
+bool LLFloaterTexturePicker::handleKeyHere(KEY key, MASK mask)
 {
     LLFolderView* root_folder = mInventoryPanel->getRootFolder();
 
@@ -498,23 +498,23 @@ BOOL LLFloaterTexturePicker::handleKeyHere(KEY key, MASK mask)
                 LLFolderViewItem* itemp =    mInventoryPanel->getItemByID(gInventory.getRootFolderID());
                 if (itemp)
                 {
-                    root_folder->setSelection(itemp, FALSE, FALSE);
+                    root_folder->setSelection(itemp, false, false);
                 }
             }
             root_folder->scrollToShowSelection();
 
             // move focus to inventory proper
-            mInventoryPanel->setFocus(TRUE);
+            mInventoryPanel->setFocus(true);
 
             // treat this as a user selection of the first filtered result
             commitIfImmediateSet();
 
-            return TRUE;
+            return true;
         }
 
         if (mInventoryPanel->hasFocus() && key == KEY_UP)
         {
-            mFilterEdit->focusFirstItem(TRUE);
+            mFilterEdit->focusFirstItem(true);
         }
     }
 
@@ -543,7 +543,7 @@ void LLFloaterTexturePicker::onClose(bool app_quitting)
 }
 
 // virtual
-BOOL LLFloaterTexturePicker::postBuild()
+bool LLFloaterTexturePicker::postBuild()
 {
     LLFloater::postBuild();
 
@@ -596,7 +596,7 @@ BOOL LLFloaterTexturePicker::postBuild()
 
         // Disable auto selecting first filtered item because it takes away
         // selection from the item set by LLTextureCtrl owning this floater.
-        mInventoryPanel->getRootFolder()->setAutoSelectOverride(TRUE);
+        mInventoryPanel->getRootFolder()->setAutoSelectOverride(true);
 
         // Commented out to scroll to currently selected texture. See EXT-5403.
         // // store this filter as the default one
@@ -610,7 +610,7 @@ BOOL LLFloaterTexturePicker::postBuild()
 
         if(!mImageAssetID.isNull() || mInventoryPickType == PICK_MATERIAL)
         {
-            mInventoryPanel->setSelection(findItemID(mImageAssetID, FALSE), TAKE_FOCUS_NO);
+            mInventoryPanel->setSelection(findItemID(mImageAssetID, false), TAKE_FOCUS_NO);
         }
     }
 
@@ -622,7 +622,7 @@ BOOL LLFloaterTexturePicker::postBuild()
     mLocalScrollCtrl->setCommitCallback(onLocalScrollCommit, this);
     refreshLocalList();
 
-    mNoCopyTextureSelected = FALSE;
+    mNoCopyTextureSelected = false;
 
     getChild<LLUICtrl>("apply_immediate_check")->setValue(mCanApplyImmediately && gSavedSettings.getBOOL("TextureLivePreview"));
     childSetCommitCallback("apply_immediate_check", onApplyImmediateCheck, this);
@@ -632,14 +632,14 @@ BOOL LLFloaterTexturePicker::postBuild()
     childSetAction("Cancel", LLFloaterTexturePicker::onBtnCancel,this);
     childSetAction("Select", LLFloaterTexturePicker::onBtnSelect,this);
 
-    mSavedFolderState.setApply(FALSE);
+    mSavedFolderState.setApply(false);
 
     LLToolPipette::getInstance()->setToolSelectCallback(boost::bind(&LLFloaterTexturePicker::onTextureSelect, this, _1));
 
     getChild<LLComboBox>("l_bake_use_texture_combo_box")->setCommitCallback(onBakeTextureSelect, this);
 
-    setBakeTextureEnabled(TRUE);
-    return TRUE;
+    setBakeTextureEnabled(mInventoryPickType != PICK_MATERIAL);
+    return true;
 }
 
 // virtual
@@ -658,7 +658,7 @@ void LLFloaterTexturePicker::draw()
     mPipetteBtn->setEnabled(mActive);
     mPipetteBtn->setValue(LLToolMgr::getInstance()->getCurrentTool() == LLToolPipette::getInstance());
 
-    //BOOL allow_copy = FALSE;
+    //bool allow_copy = false;
     if( mOwner )
     {
         mTexturep = NULL;
@@ -716,7 +716,7 @@ void LLFloaterTexturePicker::draw()
 
         if (mTentativeLabel)
         {
-            mTentativeLabel->setVisible( FALSE  );
+            mTentativeLabel->setVisible( false  );
         }
 
         mDefaultBtn->setEnabled(mImageAssetID != mDefaultImageAssetID || mTentative);
@@ -732,7 +732,7 @@ void LLFloaterTexturePicker::draw()
 
         // Border
         LLRect border = getChildView("preview_widget")->getRect();
-        gl_rect_2d( border, LLColor4::black, FALSE );
+        gl_rect_2d( border, LLColor4::black, false );
 
 
         // Interior
@@ -767,7 +767,7 @@ void LLFloaterTexturePicker::draw()
         }
         else
         {
-            gl_rect_2d( interior, LLColor4::grey % alpha, TRUE );
+            gl_rect_2d( interior, LLColor4::grey % alpha, true );
 
             // Draw X
             gl_draw_x(interior, LLColor4::black );
@@ -776,7 +776,7 @@ void LLFloaterTexturePicker::draw()
         // Draw Tentative Label over the image
         if( mTentative && !mViewModel->isDirty() )
         {
-            mTentativeLabel->setVisible( TRUE );
+            mTentativeLabel->setVisible( true );
             drawChild(mTentativeLabel);
         }
 
@@ -792,19 +792,19 @@ void LLFloaterTexturePicker::draw()
 
         // After inventory panel filter is applied we have to update
         // constraint rect for the selected item because of folder view
-        // AutoSelectOverride set to TRUE. We force PinningSelectedItem
-        // flag to FALSE state and setting filter "dirty" to update
+        // AutoSelectOverride set to true. We force PinningSelectedItem
+        // flag to false state and setting filter "dirty" to update
         // scroll container to show selected item (see LLFolderView::doIdle()).
         if (!is_filter_active && !mSelectedItemPinned)
         {
             folder_view->setPinningSelectedItem(mSelectedItemPinned);
             folder_view->getViewModelItem()->dirtyFilter();
-            mSelectedItemPinned = TRUE;
+            mSelectedItemPinned = true;
         }
     }
 }
 
-const LLUUID& LLFloaterTexturePicker::findItemID(const LLUUID& asset_id, BOOL copyable_only, BOOL ignore_library)
+const LLUUID& LLFloaterTexturePicker::findItemID(const LLUUID& asset_id, bool copyable_only, bool ignore_library)
 {
     if (asset_id.isNull())
     {
@@ -1038,7 +1038,7 @@ void LLFloaterTexturePicker::onBtnSelect(void* userdata)
 
 void LLFloaterTexturePicker::onBtnPipette()
 {
-    BOOL pipette_active = getChild<LLUICtrl>("Pipette")->getValue().asBoolean();
+    bool pipette_active = getChild<LLUICtrl>("Pipette")->getValue().asBoolean();
     pipette_active = !pipette_active;
     if (pipette_active)
     {
@@ -1050,13 +1050,13 @@ void LLFloaterTexturePicker::onBtnPipette()
     }
 }
 
-void LLFloaterTexturePicker::onSelectionChange(const std::deque<LLFolderViewItem*> &items, BOOL user_action)
+void LLFloaterTexturePicker::onSelectionChange(const std::deque<LLFolderViewItem*> &items, bool user_action)
 {
     if (items.size())
     {
         LLFolderViewItem* first_item = items.front();
         LLInventoryItem* itemp = gInventory.getItem(static_cast<LLFolderViewModelItemInventory*>(first_item->getViewModelItem())->getUUID());
-        mNoCopyTextureSelected = FALSE;
+        mNoCopyTextureSelected = false;
         if (itemp)
         {
             if (!mTextureSelectedCallback.empty())
@@ -1065,7 +1065,7 @@ void LLFloaterTexturePicker::onSelectionChange(const std::deque<LLFolderViewItem
             }
             if (!itemp->getPermissions().allowCopyBy(gAgent.getID()))
             {
-                mNoCopyTextureSelected = TRUE;
+                mNoCopyTextureSelected = true;
             }
             setImageIDFromItem(itemp, false);
             mViewModel->setDirty(); // *TODO: shouldn't we be using setValue() here?
@@ -1129,7 +1129,7 @@ void LLFloaterTexturePicker::onBtnRemove(void* userdata)
             LLScrollListItem* list_item = *iter;
             if (list_item)
             {
-                LLSD data = self->mLocalScrollCtrl->getFirstSelected()->getValue();
+                LLSD data = list_item->getValue();
                 LLUUID tracking_id = data["id"];
                 S32 asset_type = data["type"].asInteger();
 
@@ -1347,7 +1347,7 @@ void LLFloaterTexturePicker::onFilterEdit(const std::string& search_string )
             return;
         }
 
-        mSavedFolderState.setApply(TRUE);
+        mSavedFolderState.setApply(true);
         mInventoryPanel->getRootFolder()->applyFunctorRecursively(mSavedFolderState);
         // add folder with current item to list of previously opened folders
         LLOpenFoldersWithSelection opener;
@@ -1360,7 +1360,7 @@ void LLFloaterTexturePicker::onFilterEdit(const std::string& search_string )
         // first letter in search term, save existing folder open state
         if (!mInventoryPanel->getFilter().isNotDefault())
         {
-            mSavedFolderState.setApply(FALSE);
+            mSavedFolderState.setApply(false);
             mInventoryPanel->getRootFolder()->applyFunctorRecursively(mSavedFolderState);
         }
     }
@@ -1372,19 +1372,19 @@ void LLFloaterTexturePicker::changeMode()
 {
     int index = mModeSelector->getValue().asInteger();
 
-    mDefaultBtn->setVisible(index == PICKER_INVENTORY ? TRUE : FALSE);
-    mBlankBtn->setVisible(index == PICKER_INVENTORY ? TRUE : FALSE);
-    mNoneBtn->setVisible(index == PICKER_INVENTORY ? TRUE : FALSE);
-    mFilterEdit->setVisible(index == PICKER_INVENTORY ? TRUE : FALSE);
-    mInventoryPanel->setVisible(index == PICKER_INVENTORY ? TRUE : FALSE);
+    mDefaultBtn->setVisible(index == PICKER_INVENTORY);
+    mBlankBtn->setVisible(index == PICKER_INVENTORY);
+    mNoneBtn->setVisible(index == PICKER_INVENTORY);
+    mFilterEdit->setVisible(index == PICKER_INVENTORY);
+    mInventoryPanel->setVisible(index == PICKER_INVENTORY);
 
-    getChild<LLButton>("l_add_btn")->setVisible(index == PICKER_LOCAL ? TRUE : FALSE);
-    getChild<LLButton>("l_rem_btn")->setVisible(index == PICKER_LOCAL ? TRUE : FALSE);
-    getChild<LLButton>("l_upl_btn")->setVisible(index == PICKER_LOCAL ? TRUE : FALSE);
-    getChild<LLScrollListCtrl>("l_name_list")->setVisible(index == PICKER_LOCAL ? TRUE : FALSE);
+    getChild<LLButton>("l_add_btn")->setVisible(index == PICKER_LOCAL);
+    getChild<LLButton>("l_rem_btn")->setVisible(index == PICKER_LOCAL);
+    getChild<LLButton>("l_upl_btn")->setVisible(index == PICKER_LOCAL);
+    getChild<LLScrollListCtrl>("l_name_list")->setVisible(index == PICKER_LOCAL);
 
-    getChild<LLComboBox>("l_bake_use_texture_combo_box")->setVisible(index == PICKER_BAKE ? TRUE : FALSE);
-    getChild<LLCheckBoxCtrl>("hide_base_mesh_region")->setVisible(FALSE);// index == 2 ? TRUE : FALSE);
+    getChild<LLComboBox>("l_bake_use_texture_combo_box")->setVisible(index == PICKER_BAKE);
+    getChild<LLCheckBoxCtrl>("hide_base_mesh_region")->setVisible(false);// index == 2);
 
     bool pipette_visible = (index == PICKER_INVENTORY)
         && (mInventoryPickType != PICK_MATERIAL);
@@ -1442,7 +1442,7 @@ void LLFloaterTexturePicker::changeMode()
             val = 10;
         }
 
-        getChild<LLComboBox>("l_bake_use_texture_combo_box")->setSelectedByValue(val, TRUE);
+        getChild<LLComboBox>("l_bake_use_texture_combo_box")->setSelectedByValue(val, true);
     }
 }
 
@@ -1488,14 +1488,14 @@ void LLFloaterTexturePicker::refreshInventoryFilter()
     mInventoryPanel->setFilterTypes(filter_types);
 }
 
-void LLFloaterTexturePicker::setLocalTextureEnabled(BOOL enabled)
+void LLFloaterTexturePicker::setLocalTextureEnabled(bool enabled)
 {
     mModeSelector->setEnabledByValue(1, enabled);
 }
 
-void LLFloaterTexturePicker::setBakeTextureEnabled(BOOL enabled)
+void LLFloaterTexturePicker::setBakeTextureEnabled(bool enabled)
 {
-    BOOL changed = (enabled != mBakeTextureEnabled);
+    bool changed = (enabled != mBakeTextureEnabled);
 
     mBakeTextureEnabled = enabled;
     mModeSelector->setEnabledByValue(2, enabled);
@@ -1549,7 +1549,7 @@ void LLFloaterTexturePicker::setInventoryPickType(EPickInventoryType type)
     // refresh selection
     if (!mImageAssetID.isNull() || mInventoryPickType == PICK_MATERIAL)
     {
-        mInventoryPanel->setSelection(findItemID(mImageAssetID, FALSE), TAKE_FOCUS_NO);
+        mInventoryPanel->setSelection(findItemID(mImageAssetID, false), TAKE_FOCUS_NO);
     }
 }
 
@@ -1603,10 +1603,10 @@ void LLFloaterTexturePicker::onPickerCallback(const std::vector<std::string>& fi
 
 void LLFloaterTexturePicker::onTextureSelect( const LLTextureEntry& te )
 {
-    LLUUID inventory_item_id = findItemID(te.getID(), TRUE);
+    LLUUID inventory_item_id = findItemID(te.getID(), true);
     if (inventory_item_id.notNull())
     {
-        LLToolPipette::getInstance()->setResult(TRUE, "");
+        LLToolPipette::getInstance()->setResult(true, "");
         if (mInventoryPickType == PICK_MATERIAL)
         {
             // tes have no data about material ids
@@ -1619,20 +1619,20 @@ void LLFloaterTexturePicker::onTextureSelect( const LLTextureEntry& te )
             setImageID(te.getID());
         }
 
-        mNoCopyTextureSelected = FALSE;
+        mNoCopyTextureSelected = false;
         LLInventoryItem* itemp = gInventory.getItem(inventory_item_id);
 
         if (itemp && !itemp->getPermissions().allowCopyBy(gAgent.getID()))
         {
             // no copy texture
-            mNoCopyTextureSelected = TRUE;
+            mNoCopyTextureSelected = true;
         }
 
         commitIfImmediateSet();
     }
     else
     {
-        LLToolPipette::getInstance()->setResult(FALSE, LLTrans::getString("InventoryNoTexture"));
+        LLToolPipette::getInstance()->setResult(false, LLTrans::getString("InventoryNoTexture"));
     }
 }
 
@@ -1650,12 +1650,12 @@ LLTextureCtrl::LLTextureCtrl(const LLTextureCtrl::Params& p)
     mOnSelectCallback(NULL),
     mBorderColor( p.border_color() ),
     mAllowNoTexture( p.allow_no_texture ),
-    mAllowLocalTexture( TRUE ),
+    mAllowLocalTexture( true ),
     mImmediateFilterPermMask( PERM_NONE ),
-    mCanApplyImmediately( FALSE ),
-    mNeedsRawImageData( FALSE ),
-    mValid( TRUE ),
-    mShowLoadingPlaceholder( TRUE ),
+    mCanApplyImmediately( false ),
+    mNeedsRawImageData( false ),
+    mValid( true ),
+    mShowLoadingPlaceholder( true ),
     mOpenTexPreview(false),
     mBakeTextureEnabled(true),
     mInventoryPickType(p.pick_type),
@@ -1716,7 +1716,7 @@ LLTextureCtrl::~LLTextureCtrl()
     closeDependentFloater();
 }
 
-void LLTextureCtrl::setShowLoadingPlaceholder(BOOL showLoadingPlaceholder)
+void LLTextureCtrl::setShowLoadingPlaceholder(bool showLoadingPlaceholder)
 {
     mShowLoadingPlaceholder = showLoadingPlaceholder;
 }
@@ -1726,7 +1726,7 @@ void LLTextureCtrl::setCaption(const std::string& caption)
     mCaption->setText( caption );
 }
 
-void LLTextureCtrl::setCanApplyImmediately(BOOL b)
+void LLTextureCtrl::setCanApplyImmediately(bool b)
 {
     mCanApplyImmediately = b;
     LLFloaterTexturePicker* floaterp = (LLFloaterTexturePicker*)mFloaterHandle.get();
@@ -1762,7 +1762,7 @@ void LLTextureCtrl::setFilterPermissionMasks(PermissionMask mask)
     setDnDFilterPermMask(mask);
 }
 
-void LLTextureCtrl::onVisibilityChange(BOOL new_visibility)
+void LLTextureCtrl::onVisibilityChange(bool new_visibility)
 {
     if (!new_visibility)
     {
@@ -1775,7 +1775,7 @@ void LLTextureCtrl::onVisibilityChange(BOOL new_visibility)
     }
 }
 
-void LLTextureCtrl::setVisible( BOOL visible )
+void LLTextureCtrl::setVisible(bool visible )
 {
     if( !visible )
     {
@@ -1784,7 +1784,7 @@ void LLTextureCtrl::setVisible( BOOL visible )
     LLUICtrl::setVisible( visible );
 }
 
-void LLTextureCtrl::setEnabled( BOOL enabled )
+void LLTextureCtrl::setEnabled( bool enabled )
 {
     LLFloaterTexturePicker* floaterp = (LLFloaterTexturePicker*)mFloaterHandle.get();
     if( floaterp )
@@ -1810,7 +1810,7 @@ void LLTextureCtrl::setEnabled( BOOL enabled )
     LLView::setEnabled( enabled );
 }
 
-void LLTextureCtrl::setValid(BOOL valid )
+void LLTextureCtrl::setValid(bool valid )
 {
     mValid = valid;
     if (!valid)
@@ -1818,7 +1818,7 @@ void LLTextureCtrl::setValid(BOOL valid )
         LLFloaterTexturePicker* pickerp = (LLFloaterTexturePicker*)mFloaterHandle.get();
         if (pickerp)
         {
-            pickerp->setActive(FALSE);
+            pickerp->setActive(false);
         }
     }
 }
@@ -1836,7 +1836,7 @@ void LLTextureCtrl::setLabel(const std::string& label)
     mCaption->setText(label);
 }
 
-void LLTextureCtrl::showPicker(BOOL take_focus)
+void LLTextureCtrl::showPicker(bool take_focus)
 {
     // show hourglass cursor when loading inventory window
     // because inventory construction is slooow
@@ -1882,7 +1882,7 @@ void LLTextureCtrl::showPicker(BOOL take_focus)
         {
             texture_floaterp->setSetImageAssetIDCallback(boost::bind(&LLTextureCtrl::setImageAssetID, this, _1));
 
-            texture_floaterp->setBakeTextureEnabled(mBakeTextureEnabled);
+            texture_floaterp->setBakeTextureEnabled(mBakeTextureEnabled && mInventoryPickType != PICK_MATERIAL);
         }
 
         LLFloater* root_floater = gFloaterView->getParentFloater(this);
@@ -1899,7 +1899,7 @@ void LLTextureCtrl::showPicker(BOOL take_focus)
 
     if (take_focus)
     {
-        floaterp->setFocus(TRUE);
+        floaterp->setFocus(true);
     }
 }
 
@@ -1910,7 +1910,7 @@ void LLTextureCtrl::closeDependentFloater()
     if( floaterp && floaterp->isInVisibleChain())
     {
         floaterp->setOwner(NULL);
-        floaterp->setVisible(FALSE);
+        floaterp->setVisible(false);
         floaterp->closeFloater();
     }
 }
@@ -1929,22 +1929,22 @@ public:
     }
 };
 
-BOOL LLTextureCtrl::handleHover(S32 x, S32 y, MASK mask)
+bool LLTextureCtrl::handleHover(S32 x, S32 y, MASK mask)
 {
     getWindow()->setCursor(mBorder->parentPointInView(x,y) ? UI_CURSOR_HAND : UI_CURSOR_ARROW);
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLTextureCtrl::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLTextureCtrl::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLUICtrl::handleMouseDown( x, y , mask );
+    bool handled = LLUICtrl::handleMouseDown( x, y , mask );
 
     if (!handled && mBorder->parentPointInView(x, y))
     {
         if (!mOpenTexPreview)
         {
-            showPicker(FALSE);
+            showPicker(false);
             if (mInventoryPickType == PICK_MATERIAL)
             {
                 //grab materials first...
@@ -1960,7 +1960,7 @@ BOOL LLTextureCtrl::handleMouseDown(S32 x, S32 y, MASK mask)
             {
                 LLInventoryModelBackgroundFetch::instance().start();
             }
-            handled = TRUE;
+            handled = true;
         }
         else
         {
@@ -2015,7 +2015,7 @@ void LLTextureCtrl::onFloaterCommit(ETexturePickOp op, LLPickerSource source, co
 
         if(floaterp->isDirty() || asset_id.notNull()) // mModelView->setDirty does not work.
         {
-            setTentative( FALSE );
+            setTentative( false );
 
             switch(source)
             {
@@ -2036,7 +2036,7 @@ void LLTextureCtrl::onFloaterCommit(ETexturePickOp op, LLPickerSource source, co
                     break;
                 case PICKER_UNKNOWN:
                 default:
-                    mImageItemID = floaterp->findItemID(asset_id, FALSE);
+                    mImageItemID = floaterp->findItemID(asset_id, false);
                     mImageAssetID = asset_id;
                     mLocalTrackingID.setNull();
                     break;
@@ -2112,7 +2112,7 @@ void LLTextureCtrl::setBakeTextureEnabled(bool enabled)
     LLFloaterTexturePicker* floaterp = (LLFloaterTexturePicker*)mFloaterHandle.get();
     if (floaterp)
     {
-        floaterp->setBakeTextureEnabled(enabled);
+        floaterp->setBakeTextureEnabled(enabled && mInventoryPickType != PICK_MATERIAL);
     }
 }
 
@@ -2126,12 +2126,12 @@ void LLTextureCtrl::setInventoryPickType(EPickInventoryType type)
     }
 }
 
-BOOL LLTextureCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask,
-                      BOOL drop, EDragAndDropType cargo_type, void *cargo_data,
+bool LLTextureCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask,
+                      bool drop, EDragAndDropType cargo_type, void *cargo_data,
                       EAcceptance *accept,
                       std::string& tooltip_msg)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     // this downcast may be invalid - but if the second test below
     // returns true, then the cast was valid, and we can perform
@@ -2167,7 +2167,7 @@ BOOL LLTextureCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask,
 
                 // This removes the 'Multiple' overlay, since
                 // there is now only one texture selected.
-                setTentative( FALSE );
+                setTentative( false );
                 onCommit();
             }
         }
@@ -2179,7 +2179,7 @@ BOOL LLTextureCtrl::handleDragAndDrop(S32 x, S32 y, MASK mask,
         *accept = ACCEPT_NO;
     }
 
-    handled = TRUE;
+    handled = true;
     LL_DEBUGS("UserInput") << "dragAndDrop handled by LLTextureCtrl " << getName() << LL_ENDL;
 
     return handled;
@@ -2243,7 +2243,7 @@ void LLTextureCtrl::draw()
             }
             else
             {
-                mTexturep = LLViewerTextureManager::getFetchedTexture(mImageAssetID, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+                mTexturep = LLViewerTextureManager::getFetchedTexture(mImageAssetID, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
                 mTexturep->setBoostLevel(LLGLTexture::BOOST_PREVIEW);
                 mTexturep->forceToSaveRawImage(0);
 
@@ -2260,7 +2260,7 @@ void LLTextureCtrl::draw()
 
     // Border
     LLRect border( 0, getRect().getHeight(), getRect().getWidth(), BTN_HEIGHT_SMALL );
-    gl_rect_2d( border, mBorderColor.get(), FALSE );
+    gl_rect_2d( border, mBorderColor.get(), false );
 
     // Interior
     LLRect interior = border;
@@ -2284,7 +2284,7 @@ void LLTextureCtrl::draw()
     }
     else
     {
-        gl_rect_2d( interior, LLColor4::grey % alpha, TRUE );
+        gl_rect_2d( interior, LLColor4::grey % alpha, true );
 
         // Draw X
         gl_draw_x( interior, LLColor4::black );
@@ -2296,8 +2296,8 @@ void LLTextureCtrl::draw()
     // Using the discard level, do not show the string if the texture is almost but not
     // fully loaded.
     if (mTexturep.notNull() &&
-        (!mTexturep->isFullyLoaded()) &&
-        (mShowLoadingPlaceholder == TRUE))
+        !mTexturep->isFullyLoaded() &&
+        mShowLoadingPlaceholder)
     {
         U32 v_offset = 25;
         LLFontGL* font = LLFontGL::getFontSansSerif();
@@ -2343,11 +2343,11 @@ void LLTextureCtrl::draw()
     LLUICtrl::draw();
 }
 
-BOOL LLTextureCtrl::allowDrop(LLInventoryItem* item, EDragAndDropType cargo_type, std::string& tooltip_msg)
+bool LLTextureCtrl::allowDrop(LLInventoryItem* item, EDragAndDropType cargo_type, std::string& tooltip_msg)
 {
-    BOOL copy = item->getPermissions().allowCopyBy(gAgent.getID());
-    BOOL mod = item->getPermissions().allowModifyBy(gAgent.getID());
-    BOOL xfer = item->getPermissions().allowOperationBy(PERM_TRANSFER,
+    bool copy = item->getPermissions().allowCopyBy(gAgent.getID());
+    bool mod = item->getPermissions().allowModifyBy(gAgent.getID());
+    bool xfer = item->getPermissions().allowOperationBy(PERM_TRANSFER,
                                                         gAgent.getID());
 
     PermissionMask item_perm_mask = 0;
@@ -2364,7 +2364,7 @@ BOOL LLTextureCtrl::allowDrop(LLInventoryItem* item, EDragAndDropType cargo_type
         }
         else
         {
-            return TRUE;
+            return true;
         }
     }
     else
@@ -2375,16 +2375,16 @@ BOOL LLTextureCtrl::allowDrop(LLInventoryItem* item, EDragAndDropType cargo_type
         {
             tooltip_msg.assign(LLTrans::getString("TooltipTextureRestrictedDrop"));
         }
-        return FALSE;
+        return false;
     }
 }
 
-BOOL LLTextureCtrl::doDrop(LLInventoryItem* item)
+bool LLTextureCtrl::doDrop(LLInventoryItem* item)
 {
     // call the callback if it exists.
     if(mDropCallback)
     {
-        // if it returns TRUE, we return TRUE, and therefore the
+        // if it returns true, we return true, and therefore the
         // commit is called above.
         return mDropCallback(this, item);
     }
@@ -2400,15 +2400,15 @@ BOOL LLTextureCtrl::doDrop(LLInventoryItem* item)
 
     setImageAssetID(asset_id);
     mImageItemID = item->getUUID();
-    return TRUE;
+    return true;
 }
 
-BOOL LLTextureCtrl::handleUnicodeCharHere(llwchar uni_char)
+bool LLTextureCtrl::handleUnicodeCharHere(llwchar uni_char)
 {
     if( ' ' == uni_char )
     {
-        showPicker(TRUE);
-        return TRUE;
+        showPicker(true);
+        return true;
     }
     return LLUICtrl::handleUnicodeCharHere(uni_char);
 }
diff --git a/indra/newview/lltexturectrl.h b/indra/newview/lltexturectrl.h
index db36ac9cc2..3c6cff4eaa 100644
--- a/indra/newview/lltexturectrl.h
+++ b/indra/newview/lltexturectrl.h
@@ -50,7 +50,7 @@ class LLViewerFetchedTexture;
 class LLFetchedGLTFMaterial;
 
 // used for setting drag & drop callbacks.
-typedef boost::function<BOOL (LLUICtrl*, LLInventoryItem*)> drag_n_drop_callback;
+typedef boost::function<bool (LLUICtrl*, LLInventoryItem*)> drag_n_drop_callback;
 typedef boost::function<void (LLInventoryItem*)> texture_selected_callback;
 
 // Helper functions for UI that work with picker
@@ -148,21 +148,21 @@ public:
 
     // LLView interface
 
-    BOOL handleMouseDown(S32 x, S32 y, MASK mask) override;
-    BOOL handleDragAndDrop(S32 x, S32 y, MASK mask,
-        BOOL drop, EDragAndDropType cargo_type, void *cargo_data,
+    bool handleMouseDown(S32 x, S32 y, MASK mask) override;
+    bool handleDragAndDrop(S32 x, S32 y, MASK mask,
+        bool drop, EDragAndDropType cargo_type, void *cargo_data,
         EAcceptance *accept,
         std::string& tooltip_msg) override;
-    BOOL handleHover(S32 x, S32 y, MASK mask) override;
-    BOOL handleUnicodeCharHere(llwchar uni_char) override;
+    bool handleHover(S32 x, S32 y, MASK mask) override;
+    bool handleUnicodeCharHere(llwchar uni_char) override;
 
     void draw() override;
-    void setVisible( BOOL visible ) override;
-    void setEnabled( BOOL enabled ) override;
+    void setVisible( bool visible ) override;
+    void setEnabled( bool enabled ) override;
 
-    void onVisibilityChange(BOOL new_visibility) override;
+    void onVisibilityChange(bool new_visibility) override;
 
-    void setValid(BOOL valid);
+    void setValid(bool valid);
 
     // LLUICtrl interface
     void clear() override;
@@ -172,17 +172,17 @@ public:
     LLSD getValue() const override;
 
     // LLTextureCtrl interface
-    void            showPicker(BOOL take_focus);
+    void            showPicker(bool take_focus);
     bool            isPickerShown() { return !mFloaterHandle.isDead(); }
     void            setLabel(const std::string& label);
     void            setLabelWidth(S32 label_width) {mLabelWidth =label_width;}
     const std::string&  getLabel() const                            { return mLabel; }
 
-    void            setAllowNoTexture( BOOL b )                 { mAllowNoTexture = b; }
+    void            setAllowNoTexture( bool b )                 { mAllowNoTexture = b; }
     bool            getAllowNoTexture() const                   { return mAllowNoTexture; }
 
-    void            setAllowLocalTexture(BOOL b)                    { mAllowLocalTexture = b; }
-    BOOL            getAllowLocalTexture() const                    { return mAllowLocalTexture; }
+    void            setAllowLocalTexture(bool b)                    { mAllowLocalTexture = b; }
+    bool            getAllowLocalTexture() const                    { return mAllowLocalTexture; }
 
     const LLUUID&   getImageItemID() { return mImageItemID; }
 
@@ -202,7 +202,7 @@ public:
     void            setOpenTexPreview(bool open_preview) { mOpenTexPreview = open_preview; }
 
     void            setCaption(const std::string& caption);
-    void            setCanApplyImmediately(BOOL b);
+    void            setCanApplyImmediately(bool b);
 
     void            setCanApply(bool can_preview, bool can_apply);
 
@@ -222,10 +222,10 @@ public:
                                     const LLUUID& tracking_id);
 
     // This call is returned when a drag is detected. Your callback
-    // should return TRUE if the drag is acceptable.
+    // should return true if the drag is acceptable.
     void setDragCallback(drag_n_drop_callback cb)   { mDragCallback = cb; }
 
-    // This callback is called when the drop happens. Return TRUE if
+    // This callback is called when the drop happens. Return true if
     // the drop happened - resulting in an on commit callback, but not
     // necessariliy any other change.
     void setDropCallback(drag_n_drop_callback cb)   { mDropCallback = cb; }
@@ -239,7 +239,7 @@ public:
      */
     void setOnTextureSelectedCallback(texture_selected_callback cb);
 
-    void setShowLoadingPlaceholder(BOOL showLoadingPlaceholder);
+    void setShowLoadingPlaceholder(bool showLoadingPlaceholder);
 
     LLViewerFetchedTexture* getTexture() { return mTexturep; }
 
@@ -253,8 +253,8 @@ public:
     LLUUID getLocalTrackingID() { return mLocalTrackingID; }
 
 private:
-    BOOL allowDrop(LLInventoryItem* item, EDragAndDropType cargo_type, std::string& tooltip_msg);
-    BOOL doDrop(LLInventoryItem* item);
+    bool allowDrop(LLInventoryItem* item, EDragAndDropType cargo_type, std::string& tooltip_msg);
+    bool doDrop(LLInventoryItem* item);
 
 private:
     drag_n_drop_callback        mDragCallback;
@@ -278,16 +278,16 @@ private:
     LLTextBox*                  mTentativeLabel;
     LLTextBox*                  mCaption;
     std::string                 mLabel;
-    BOOL                        mAllowNoTexture; // If true, the user can select "none" as an option
-    BOOL                        mAllowLocalTexture;
+    bool                        mAllowNoTexture; // If true, the user can select "none" as an option
+    bool                        mAllowLocalTexture;
     PermissionMask              mImmediateFilterPermMask;
     PermissionMask              mDnDFilterPermMask;
-    BOOL                        mCanApplyImmediately;
-    BOOL                        mCommitOnSelection;
-    BOOL                        mNeedsRawImageData;
+    bool                        mCanApplyImmediately;
+    bool                        mCommitOnSelection;
+    bool                        mNeedsRawImageData;
     LLViewBorder*               mBorder;
-    BOOL                        mValid;
-    BOOL                        mShowLoadingPlaceholder;
+    bool                        mValid;
+    bool                        mShowLoadingPlaceholder;
     std::string                 mLoadingPlaceholderString;
     S32                         mLabelWidth;
     bool                        mOpenTexPreview;
@@ -310,27 +310,27 @@ public:
         LLUUID image_asset_id,
         LLUUID default_image_asset_id,
         LLUUID blank_image_asset_id,
-        BOOL tentative,
-        BOOL allow_no_texture,
+        bool tentative,
+        bool allow_no_texture,
         const std::string& label,
         PermissionMask immediate_filter_perm_mask,
         PermissionMask dnd_filter_perm_mask,
-        BOOL can_apply_immediately,
+        bool can_apply_immediately,
         LLUIImagePtr fallback_image_name,
         EPickInventoryType pick_type);
 
     virtual ~LLFloaterTexturePicker();
 
     // LLView overrides
-    /*virtual*/ BOOL    handleDragAndDrop(S32 x, S32 y, MASK mask,
-        BOOL drop, EDragAndDropType cargo_type, void *cargo_data,
+    /*virtual*/ bool    handleDragAndDrop(S32 x, S32 y, MASK mask,
+        bool drop, EDragAndDropType cargo_type, void *cargo_data,
         EAcceptance *accept,
         std::string& tooltip_msg);
     /*virtual*/ void    draw();
-    /*virtual*/ BOOL    handleKeyHere(KEY key, MASK mask);
+    /*virtual*/ bool    handleKeyHere(KEY key, MASK mask);
 
     // LLFloater overrides
-    /*virtual*/ BOOL    postBuild();
+    /*virtual*/ bool    postBuild();
     /*virtual*/ void    onOpen(const LLSD& key);
     /*virtual*/ void    onClose(bool app_settings);
 
@@ -338,10 +338,10 @@ public:
     void setImageID(const LLUUID& image_asset_id, bool set_selection = true);
     bool updateImageStats(); // true if within limits
     const LLUUID&   getAssetID() { return mImageAssetID; }
-    const LLUUID&   findItemID(const LLUUID& asset_id, BOOL copyable_only, BOOL ignore_library = FALSE);
-    void            setCanApplyImmediately(BOOL b);
+    const LLUUID&   findItemID(const LLUUID& asset_id, bool copyable_only, bool ignore_library = false);
+    void            setCanApplyImmediately(bool b);
 
-    void            setActive(BOOL active);
+    void            setActive(bool active);
 
     LLView*         getOwner() const { return mOwner; }
     void            setOwner(LLView* owner) { mOwner = owner; }
@@ -370,7 +370,7 @@ public:
     //static void       onBtnRevert( void* userdata );
     static void     onBtnBlank(void* userdata);
     static void     onBtnNone(void* userdata);
-    void            onSelectionChange(const std::deque<LLFolderViewItem*> &items, BOOL user_action);
+    void            onSelectionChange(const std::deque<LLFolderViewItem*> &items, bool user_action);
     static void     onApplyImmediateCheck(LLUICtrl* ctrl, void* userdata);
     void            onTextureSelect(const LLTextureEntry& te);
 
@@ -382,8 +382,8 @@ public:
 
     static void     onBakeTextureSelect(LLUICtrl* ctrl, void *userdata);
 
-    void            setLocalTextureEnabled(BOOL enabled);
-    void            setBakeTextureEnabled(BOOL enabled);
+    void            setLocalTextureEnabled(bool enabled);
+    void            setBakeTextureEnabled(bool enabled);
 
     void setInventoryPickType(EPickInventoryType type);
     void setImmediateFilterPermMask(PermissionMask mask);
@@ -405,8 +405,8 @@ protected:
     LLUIImagePtr        mFallbackImage; // What to show if currently selected texture is null.
     LLUUID              mDefaultImageAssetID;
     LLUUID              mBlankImageAssetID;
-    BOOL                mTentative;
-    BOOL                mAllowNoTexture;
+    bool                mTentative;
+    bool                mAllowNoTexture;
     LLUUID              mSpecialCurrentImageAssetID;  // Used when the asset id has no corresponding texture in the user's inventory.
     LLUUID              mOriginalImageAssetID;
 
@@ -417,17 +417,17 @@ protected:
     LLTextBox*          mResolutionWarning;
 
     std::string         mPendingName;
-    BOOL                mActive;
+    bool                mActive;
 
     LLFilterEditor*     mFilterEdit;
     LLInventoryPanel*   mInventoryPanel;
     PermissionMask      mImmediateFilterPermMask;
     PermissionMask      mDnDFilterPermMask;
-    BOOL                mCanApplyImmediately;
-    BOOL                mNoCopyTextureSelected;
+    bool                mCanApplyImmediately;
+    bool                mNoCopyTextureSelected;
     F32                 mContextConeOpacity;
     LLSaveFolderState   mSavedFolderState;
-    BOOL                mSelectedItemPinned;
+    bool                mSelectedItemPinned;
 
     LLComboBox*         mModeSelector;
     LLScrollListCtrl*   mLocalScrollCtrl;
@@ -454,7 +454,7 @@ private:
     set_image_asset_id_callback mSetImageAssetIDCallback;
     set_on_update_image_stats_callback mOnUpdateImageStatsCallback;
 
-    BOOL mBakeTextureEnabled;
+    bool mBakeTextureEnabled;
 
     static S32 sLastPickerMode;
 };
diff --git a/indra/newview/lltexturefetch.cpp b/indra/newview/lltexturefetch.cpp
index 77c28bd3f4..ee13baaa18 100644
--- a/indra/newview/lltexturefetch.cpp
+++ b/indra/newview/lltexturefetch.cpp
@@ -392,7 +392,7 @@ public:
 
     // Threads:  Ttc
     void callbackCacheRead(bool success, LLImageFormatted* image,
-                           S32 imagesize, BOOL islocal);
+                           S32 imagesize, bool islocal);
 
     // Threads:  Ttc
     void callbackCacheWrite(bool success);
@@ -571,13 +571,13 @@ private:
                                 mCachedSize;
     e_request_state mSentRequest;
     handle_t mDecodeHandle;
-    BOOL mLoaded;
-    BOOL mDecoded;
-    BOOL mWritten;
-    BOOL mNeedsAux;
-    BOOL mHaveAllData;
-    BOOL mInLocalCache;
-    BOOL mInCache;
+    bool mLoaded;
+    bool mDecoded;
+    bool mWritten;
+    bool mNeedsAux;
+    bool mHaveAllData;
+    bool mInLocalCache;
+    bool mInCache;
     bool                        mCanUseHTTP;
     S32 mRetryAttempt;
     S32 mActiveCount;
@@ -909,15 +909,15 @@ LLTextureFetchWorker::LLTextureFetchWorker(LLTextureFetch* fetcher,
       mFileSize(0),
       mSkippedStatesTime(0),
       mCachedSize(0),
-      mLoaded(FALSE),
+      mLoaded(false),
       mSentRequest(UNSENT),
       mDecodeHandle(0),
-      mDecoded(FALSE),
-      mWritten(FALSE),
-      mNeedsAux(FALSE),
-      mHaveAllData(FALSE),
-      mInLocalCache(FALSE),
-      mInCache(FALSE),
+      mDecoded(false),
+      mWritten(false),
+      mNeedsAux(false),
+      mHaveAllData(false),
+      mInLocalCache(false),
+      mInCache(false),
       mCanUseHTTP(true),
       mRetryAttempt(0),
       mActiveCount(0),
@@ -1054,7 +1054,7 @@ void LLTextureFetchWorker::resetFormattedData()
     }
     mHttpReplySize = 0;
     mHttpReplyOffset = 0;
-    mHaveAllData = FALSE;
+    mHaveAllData = false;
 }
 
 F32 LLTextureFetchWorker::getImagePriority() const
@@ -1152,10 +1152,10 @@ bool LLTextureFetchWorker::doWork(S32 param)
         mRequestedOffset = 0;
         mFileSize = 0;
         mCachedSize = 0;
-        mLoaded = FALSE;
+        mLoaded = false;
         mSentRequest = UNSENT;
-        mDecoded  = FALSE;
-        mWritten  = FALSE;
+        mDecoded  = false;
+        mWritten  = false;
         if (mHttpBufferArray)
         {
             mHttpBufferArray->release();
@@ -1163,12 +1163,12 @@ bool LLTextureFetchWorker::doWork(S32 param)
         }
         mHttpReplySize = 0;
         mHttpReplyOffset = 0;
-        mHaveAllData = FALSE;
+        mHaveAllData = false;
         clearPackets(); // TODO: Shouldn't be necessary
         mCacheReadHandle = LLTextureCache::nullHandle();
         mCacheWriteHandle = LLTextureCache::nullHandle();
         setState(LOAD_FROM_TEXTURE_CACHE);
-        mInCache = FALSE;
+        mInCache = false;
         mDesiredSize = llmax(mDesiredSize, TEXTURE_CACHE_ENTRY_SIZE); // min desired size is TEXTURE_CACHE_ENTRY_SIZE
         LL_DEBUGS(LOG_TXT) << mID << ": Priority: " << llformat("%8.0f",mImagePriority)
                            << " Desired Discard: " << mDesiredDiscard << " Desired Size: " << mDesiredSize << LL_ENDL;
@@ -1190,7 +1190,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
                 // return false;
             }
             mFileSize = 0;
-            mLoaded = FALSE;
+            mLoaded = false;
 
             add(LLTextureFetch::sCacheAttempt, 1.0);
 
@@ -1264,7 +1264,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
                                   << ", should be >=0" << LL_ENDL;
             }
             setState(DECODE_IMAGE);
-            mInCache = TRUE;
+            mInCache = true;
             mWriteToCacheState = NOT_WRITE ;
             LL_DEBUGS(LOG_TXT) << mID << ": Cached. Bytes: " << mFormattedImage->getDataSize()
                                << " Size: " << llformat("%dx%d",mFormattedImage->getWidth(),mFormattedImage->getHeight())
@@ -1476,7 +1476,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
         }
 
         mRequestedDeltaTimer.reset();
-        mLoaded = FALSE;
+        mLoaded = false;
         mGetStatus = LLCore::HttpStatus();
         mGetReason.clear();
         LL_DEBUGS(LOG_TXT) << "HTTP GET: " << mID << " Offset: " << mRequestedOffset
@@ -1593,7 +1593,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
                 else if (http_not_sat == mGetStatus)
                 {
                     // Allowed, we'll accept whatever data we have as complete.
-                    mHaveAllData = TRUE;
+                    mHaveAllData = true;
                 }
                 else
                 {
@@ -1655,7 +1655,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
                 return true;
             }
 
-            S32 append_size(mHttpBufferArray->size());
+            S32 append_size(static_cast<S32>(mHttpBufferArray->size()));
             S32 total_size(cur_size + append_size);
             S32 src_offset(0);
             llassert_always(append_size == mRequestedSize);
@@ -1664,7 +1664,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
                 // In case of a partial response, our offset may
                 // not be trivially contiguous with the data we have.
                 // Get back into alignment.
-                if ( (mHttpReplyOffset > cur_size) || (cur_size > mHttpReplyOffset + append_size))
+                if ( ((S32)mHttpReplyOffset > cur_size) || (cur_size > (S32)mHttpReplyOffset + append_size))
                 {
                     LL_WARNS(LOG_TXT) << "Partial HTTP response produces break in image data for texture "
                                       << mID << ".  Aborting load."  << LL_ENDL;
@@ -1700,6 +1700,8 @@ bool LLTextureFetchWorker::doWork(S32 param)
                 }
             }
 
+            LLImageDataLock lock(mFormattedImage);
+
             if (mHaveAllData) //the image file is fully loaded.
             {
                 mFileSize = total_size;
@@ -1796,7 +1798,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
         mAuxImage = NULL;
         llassert_always(mFormattedImage.notNull());
         S32 discard = mHaveAllData ? 0 : mLoadedDiscard;
-        mDecoded  = FALSE;
+        mDecoded  = false;
         setState(DECODE_IMAGE_UPDATE);
         LL_DEBUGS(LOG_TXT) << mID << ": Decoding. Bytes: " << mFormattedImage->getDataSize() << " Discard: " << discard
                            << " All Data: " << mHaveAllData << LL_ENDL;
@@ -1871,6 +1873,9 @@ bool LLTextureFetchWorker::doWork(S32 param)
             //return false;
             return doWork(param);
         }
+
+        LLImageDataSharedLock lock(mFormattedImage);
+
         S32 datasize = mFormattedImage->getDataSize();
         if(mFileSize < datasize)//This could happen when http fetching and sim fetching mixed.
         {
@@ -1884,7 +1889,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
             }
         }
         llassert_always(datasize);
-        mWritten = FALSE;
+        mWritten = false;
         setState(WAIT_ON_WRITE);
         ++mCacheWriteCount;
         CacheWriteResponder* responder = new CacheWriteResponder(mFetcher, mID);
@@ -2188,7 +2193,7 @@ S32 LLTextureFetchWorker::callbackHttpGet(LLCore::HttpResponse * response,
     {
         // get length of stream:
         LLCore::BufferArray * body(response->getBody());
-        data_size = body ? body->size() : 0;
+        data_size = body ? static_cast<S32>(body->size()) : 0;
 
         LL_DEBUGS(LOG_TXT) << "HTTP RECEIVED: " << mID.asString() << " Bytes: " << data_size << LL_ENDL;
         if (data_size > 0)
@@ -2234,19 +2239,19 @@ S32 LLTextureFetchWorker::callbackHttpGet(LLCore::HttpResponse * response,
                                       << mFileSize << " datasize:  " << mFormattedImage->getDataSize()
                                       << LL_ENDL;
                 }
-                mHaveAllData = TRUE;
+                mHaveAllData = true;
                 llassert_always(mDecodeHandle == 0);
                 mFormattedImage = NULL; // discard any previous data we had
             }
             else if (data_size < mRequestedSize)
             {
-                mHaveAllData = TRUE;
+                mHaveAllData = true;
             }
             else if (data_size > mRequestedSize)
             {
                 // *TODO: This shouldn't be happening any more  (REALLY don't expect this anymore)
                 LL_WARNS(LOG_TXT) << "data_size = " << data_size << " > requested: " << mRequestedSize << LL_ENDL;
-                mHaveAllData = TRUE;
+                mHaveAllData = true;
                 llassert_always(mDecodeHandle == 0);
                 mFormattedImage = NULL; // discard any previous data we had
             }
@@ -2255,7 +2260,7 @@ S32 LLTextureFetchWorker::callbackHttpGet(LLCore::HttpResponse * response,
         {
             // We requested data but received none (and no error),
             // so presumably we have all of it
-            mHaveAllData = TRUE;
+            mHaveAllData = true;
         }
         mRequestedSize = data_size;
 
@@ -2271,7 +2276,7 @@ S32 LLTextureFetchWorker::callbackHttpGet(LLCore::HttpResponse * response,
         mRequestedSize = -1; // error
     }
 
-    mLoaded = TRUE;
+    mLoaded = true;
 
     return data_size ;
 }
@@ -2280,7 +2285,7 @@ S32 LLTextureFetchWorker::callbackHttpGet(LLCore::HttpResponse * response,
 
 // Threads:  Ttc
 void LLTextureFetchWorker::callbackCacheRead(bool success, LLImageFormatted* image,
-                                             S32 imagesize, BOOL islocal)
+                                             S32 imagesize, bool islocal)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     LLMutexLock lock(&mWorkMutex);                                      // +Mw
@@ -2298,10 +2303,10 @@ void LLTextureFetchWorker::callbackCacheRead(bool success, LLImageFormatted* ima
         mInLocalCache = islocal;
         if (mFileSize != 0 && mFormattedImage->getDataSize() >= mFileSize)
         {
-            mHaveAllData = TRUE;
+            mHaveAllData = true;
         }
     }
-    mLoaded = TRUE;
+    mLoaded = true;
 }                                                                       // -Mw
 
 // Threads:  Ttc
@@ -2313,7 +2318,7 @@ void LLTextureFetchWorker::callbackCacheWrite(bool success)
 //      LL_WARNS(LOG_TXT) << "Write callback for " << mID << " with state = " << mState << LL_ENDL;
         return;
     }
-    mWritten = TRUE;
+    mWritten = true;
 }                                                                       // -Mw
 
 //////////////////////////////////////////////////////////////////////////////
@@ -2358,7 +2363,7 @@ void LLTextureFetchWorker::callbackDecoded(bool success, const std::string &erro
         removeFromCache();
         mDecodedDiscard = -1; // Redundant, here for clarity and paranoia
     }
-    mDecoded = TRUE;
+    mDecoded = true;
 //  LL_INFOS(LOG_TXT) << mID << " : DECODE COMPLETE " << LL_ENDL;
 }                                                                       // -Mw
 
@@ -2435,7 +2440,7 @@ std::string LLTextureFetch::getStateString(S32 state)
 LLTextureFetch::LLTextureFetch(LLTextureCache* cache, bool threaded, bool qa_mode)
     : LLWorkerThread("TextureFetch", threaded, true),
       mDebugCount(0),
-      mDebugPause(FALSE),
+      mDebugPause(false),
       mPacketCount(0),
       mBadPacketCount(0),
       mQueueMutex(),
@@ -3144,9 +3149,9 @@ LLViewerRegion* LLTextureFetchWorker::getRegion()
 //////////////////////////////////////////////////////////////////////////////
 
 // Threads:  T*
-BOOL LLTextureFetch::isFromLocalCache(const LLUUID& id)
+bool LLTextureFetch::isFromLocalCache(const LLUUID& id)
 {
-    BOOL from_cache = FALSE ;
+    bool from_cache = false ;
 
     LLTextureFetchWorker* worker = getWorker(id);
     if (worker)
@@ -3400,7 +3405,7 @@ void LLTextureFetch::cancelHttpWaiters()
 int LLTextureFetch::getHttpWaitersCount()
 {
     mNetworkQueueMutex.lock();                                          // +Mfnq
-    int ret(mHttpWaitResource.size());
+    int ret(static_cast<int>(mHttpWaitResource.size()));
     mNetworkQueueMutex.unlock();                                        // -Mfnq
     return ret;
 }
diff --git a/indra/newview/lltexturefetch.h b/indra/newview/lltexturefetch.h
index b72ecc2a65..aebd2f8f95 100644
--- a/indra/newview/lltexturefetch.h
+++ b/indra/newview/lltexturefetch.h
@@ -109,7 +109,7 @@ public:
     F32 getTextureBandwidth() { return mTextureBandwidth; }
 
     // Threads:  T*
-    BOOL isFromLocalCache(const LLUUID& id);
+    bool isFromLocalCache(const LLUUID& id);
 
     // get the current fetch state, if any, from the given UUID
     S32 getFetchState(const LLUUID& id);
@@ -292,7 +292,7 @@ private:
 public:
     LLUUID mDebugID;
     S32 mDebugCount;
-    BOOL mDebugPause;
+    bool mDebugPause;
     S32 mPacketCount;
     S32 mBadPacketCount;
 
diff --git a/indra/newview/lltextureinfo.cpp b/indra/newview/lltextureinfo.cpp
index e3c3864025..84ef45c97a 100644
--- a/indra/newview/lltextureinfo.cpp
+++ b/indra/newview/lltextureinfo.cpp
@@ -80,7 +80,7 @@ void LLTextureInfo::addRequest(const LLUUID& id)
 
 U32 LLTextureInfo::getTextureInfoMapSize()
 {
-    return mTextures.size();
+    return static_cast<U32>(mTextures.size());
 }
 
 bool LLTextureInfo::has(const LLUUID& id)
diff --git a/indra/newview/lltextureview.cpp b/indra/newview/lltextureview.cpp
index ea35a09f05..f521293b96 100644
--- a/indra/newview/lltextureview.cpp
+++ b/indra/newview/lltextureview.cpp
@@ -107,7 +107,7 @@ public:
     {}
 
     virtual void draw();
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask);
     virtual LLRect getRequiredRect();   // Return the height of this object, given the set options.
 
 // Used for sorting
@@ -343,12 +343,12 @@ void LLTextureBar::draw()
 
 }
 
-BOOL LLTextureBar::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLTextureBar::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if ((mask & (MASK_CONTROL|MASK_SHIFT|MASK_ALT)) == MASK_ALT)
     {
         LLAppViewer::getTextureFetch()->mDebugID = mImagep->getID();
-        return TRUE;
+        return true;
     }
     return LLView::handleMouseDown(x,y,mask);
 }
@@ -384,7 +384,7 @@ public:
     {}
 
     virtual void draw();
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask);
     virtual LLRect getRequiredRect();   // Return the height of this object, given the set options.
 
 private:
@@ -438,9 +438,9 @@ void LLAvatarTexBar::draw()
                                              header_color, LLFontGL::LEFT, LLFontGL::TOP, LLFontGL::BOLD, LLFontGL::DROP_SHADOW_SOFT);
 }
 
-BOOL LLAvatarTexBar::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLAvatarTexBar::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
 LLRect LLAvatarTexBar::getRequiredRect()
@@ -473,7 +473,7 @@ public:
     {}
 
     virtual void draw();
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask);
     virtual LLRect getRequiredRect();   // Return the height of this object, given the set options.
 
 private:
@@ -527,8 +527,8 @@ void LLGLTexMemBar::draw()
     U32 texFetchLatMed = U32(recording.getMean(LLTextureFetch::sTexFetchLatency).value() * 1000.0f);
     U32 texFetchLatMax = U32(recording.getMax(LLTextureFetch::sTexFetchLatency).value() * 1000.0f);
 
-    text = llformat("GL Free: %d MB Sys Free: %d MB FBO: %d MB Bias: %.2f Cache: %.1f/%.1f MB",
-                    gViewerWindow->getWindow()->getAvailableVRAMMegabytes(),
+    text = llformat("Est. Free: %d MB Sys Free: %d MB FBO: %d MB Bias: %.2f Cache: %.1f/%.1f MB",
+                    (S32)LLViewerTexture::sFreeVRAMMegabytes,
                     LLMemory::getAvailableMemKB()/1024,
                     LLRenderTarget::sBytesAllocated/(1024*1024),
                     discard_bias,
@@ -640,9 +640,9 @@ void LLGLTexMemBar::draw()
                                      text_color, LLFontGL::LEFT, LLFontGL::TOP);
 }
 
-BOOL LLGLTexMemBar::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLGLTexMemBar::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
 LLRect LLGLTexMemBar::getRequiredRect()
@@ -671,7 +671,7 @@ public:
     void setTop(S32 loaded, S32 bound, F32 scale) {mTopLoaded = loaded ; mTopBound = bound; mScale = scale ;}
 
     void draw();
-    BOOL handleHover(S32 x, S32 y, MASK mask, BOOL set_pick_size) ;
+    bool handleHover(S32 x, S32 y, MASK mask, bool set_pick_size) ;
 
 private:
     S32 mIndex ;
@@ -684,13 +684,13 @@ private:
     F32 mScale ;
 };
 
-BOOL LLGLTexSizeBar::handleHover(S32 x, S32 y, MASK mask, BOOL set_pick_size)
+bool LLGLTexSizeBar::handleHover(S32 x, S32 y, MASK mask, bool set_pick_size)
 {
     if(y > mBottom && (y < mBottom + (S32)(mTopLoaded * mScale) || y < mBottom + (S32)(mTopBound * mScale)))
     {
         LLImageGL::setCurTexSizebar(mIndex, set_pick_size);
     }
-    return TRUE ;
+    return true ;
 }
 void LLGLTexSizeBar::draw()
 {
@@ -719,14 +719,14 @@ void LLGLTexSizeBar::draw()
 
 LLTextureView::LLTextureView(const LLTextureView::Params& p)
     :   LLContainerView(p),
-        mFreezeView(FALSE),
-        mOrderFetch(FALSE),
-        mPrintList(FALSE),
+        mFreezeView(false),
+        mOrderFetch(false),
+        mPrintList(false),
         mNumTextureBars(0)
 {
-    setVisible(FALSE);
+    setVisible(false);
 
-    setDisplayChildren(TRUE);
+    setDisplayChildren(true);
     mGLTexMemBar = 0;
     mAvatarTexBar = 0;
 }
@@ -898,7 +898,7 @@ void LLTextureView::draw()
 
         if (mPrintList)
         {
-            mPrintList = FALSE;
+            mPrintList = false;
         }
 
         static S32 max_count = 50;
@@ -947,7 +947,7 @@ void LLTextureView::draw()
         addChild(mAvatarTexBar);
         sendChildToFront(mAvatarTexBar);
 
-        reshape(getRect().getWidth(), getRect().getHeight(), TRUE);
+        reshape(getRect().getWidth(), getRect().getHeight(), true);
 
         LLUI::popMatrix();
         LLUI::pushMatrix();
@@ -959,7 +959,7 @@ void LLTextureView::draw()
             LLView *viewp = *child_iter;
             if (viewp->getRect().mBottom < 0)
             {
-                viewp->setVisible(FALSE);
+                viewp->setVisible(false);
             }
         }
     }
@@ -968,7 +968,7 @@ void LLTextureView::draw()
 
 }
 
-BOOL LLTextureView::addBar(LLViewerFetchedTexture *imagep, S32 hilite)
+bool LLTextureView::addBar(LLViewerFetchedTexture *imagep, S32 hilite)
 {
     llassert(imagep);
 
@@ -988,42 +988,42 @@ BOOL LLTextureView::addBar(LLViewerFetchedTexture *imagep, S32 hilite)
     addChild(barp);
     mTextureBars.push_back(barp);
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLTextureView::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLTextureView::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if ((mask & (MASK_CONTROL|MASK_SHIFT|MASK_ALT)) == (MASK_ALT|MASK_SHIFT))
     {
-        mPrintList = TRUE;
-        return TRUE;
+        mPrintList = true;
+        return true;
     }
     if ((mask & (MASK_CONTROL|MASK_SHIFT|MASK_ALT)) == (MASK_CONTROL|MASK_SHIFT))
     {
         LLAppViewer::getTextureFetch()->mDebugPause = !LLAppViewer::getTextureFetch()->mDebugPause;
-        return TRUE;
+        return true;
     }
     if (mask & MASK_SHIFT)
     {
         mFreezeView = !mFreezeView;
-        return TRUE;
+        return true;
     }
     if (mask & MASK_CONTROL)
     {
         mOrderFetch = !mOrderFetch;
-        return TRUE;
+        return true;
     }
     return LLView::handleMouseDown(x,y,mask);
 }
 
-BOOL LLTextureView::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLTextureView::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLTextureView::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLTextureView::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
-    return FALSE;
+    return false;
 }
 
 
diff --git a/indra/newview/lltextureview.h b/indra/newview/lltextureview.h
index 7e95f0f149..77ffe7d809 100644
--- a/indra/newview/lltextureview.h
+++ b/indra/newview/lltextureview.h
@@ -45,23 +45,22 @@ protected:
 public:
     ~LLTextureView();
 
-    /*virtual*/ void draw();
-    /*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent);
+    void draw() override;
+    bool handleMouseDown(S32 x, S32 y, MASK mask) override;
+    bool handleMouseUp(S32 x, S32 y, MASK mask) override;
+    bool handleKey(KEY key, MASK mask, bool called_from_parent) override;
 
     static void addDebugImage(LLViewerFetchedTexture* image) { sDebugImages.insert(image); }
     static void removeDebugImage(LLViewerFetchedTexture* image) { sDebugImages.insert(image); }
     static void clearDebugImages() { sDebugImages.clear(); }
 
 private:
-    BOOL addBar(LLViewerFetchedTexture *image, BOOL hilight = FALSE);
-    void removeAllBars();
+    bool addBar(LLViewerFetchedTexture *image, S32 hilight = 0);
 
 private:
-    BOOL mFreezeView;
-    BOOL mOrderFetch;
-    BOOL mPrintList;
+    bool mFreezeView;
+    bool mOrderFetch;
+    bool mPrintList;
 
     LLTextBox *mInfoTextp;
 
diff --git a/indra/newview/llthumbnailctrl.cpp b/indra/newview/llthumbnailctrl.cpp
index 8291b0b061..d26ad2f060 100644
--- a/indra/newview/llthumbnailctrl.cpp
+++ b/indra/newview/llthumbnailctrl.cpp
@@ -95,7 +95,7 @@ void LLThumbnailCtrl::draw()
     {
         mBorder->setKeyboardFocusHighlight(hasFocus());
 
-        gl_rect_2d( draw_rect, mBorderColor.get(), FALSE );
+        gl_rect_2d( draw_rect, mBorderColor.get(), false );
         draw_rect.stretch( -1 );
     }
 
@@ -106,7 +106,7 @@ void LLThumbnailCtrl::draw()
         if( mTexturep->getComponents() == 4 )
         {
             const LLColor4 color(.098f, .098f, .098f);
-            gl_rect_2d( draw_rect, color, TRUE);
+            gl_rect_2d( draw_rect, color, true);
         }
 
         gl_draw_scaled_image( draw_rect.mLeft, draw_rect.mBottom, draw_rect.getWidth(), draw_rect.getHeight(), mTexturep, UI_VERTEX_COLOR % alpha);
@@ -142,7 +142,7 @@ void LLThumbnailCtrl::draw()
     }
     else
     {
-        gl_rect_2d( draw_rect, LLColor4::grey % alpha, TRUE );
+        gl_rect_2d( draw_rect, LLColor4::grey % alpha, true );
 
         // Draw X
         gl_draw_x( draw_rect, LLColor4::black );
@@ -176,7 +176,7 @@ void LLThumbnailCtrl::draw()
     LLUICtrl::draw();
 }
 
-void LLThumbnailCtrl::setVisible(BOOL visible)
+void LLThumbnailCtrl::setVisible(bool visible)
 {
     if (!visible && mInited)
     {
@@ -212,12 +212,12 @@ void LLThumbnailCtrl::setValue(const LLSD& value)
     }
 }
 
-BOOL LLThumbnailCtrl::handleHover(S32 x, S32 y, MASK mask)
+bool LLThumbnailCtrl::handleHover(S32 x, S32 y, MASK mask)
 {
     if (mInteractable && getEnabled())
     {
         getWindow()->setCursor(UI_CURSOR_HAND);
-        return TRUE;
+        return true;
     }
     return LLUICtrl::handleHover(x, y, mask);
 }
diff --git a/indra/newview/llthumbnailctrl.h b/indra/newview/llthumbnailctrl.h
index 45cc6e541e..1927001bfd 100644
--- a/indra/newview/llthumbnailctrl.h
+++ b/indra/newview/llthumbnailctrl.h
@@ -64,13 +64,13 @@ public:
     virtual ~LLThumbnailCtrl();
 
     virtual void draw() override;
-    void setVisible(BOOL visible) override;
+    void setVisible(bool visible) override;
 
     virtual void setValue(const LLSD& value ) override;
     void setInitImmediately(bool val) { mInitImmediately = val; }
     void clearTexture();
 
-    virtual BOOL handleHover(S32 x, S32 y, MASK mask) override;
+    virtual bool handleHover(S32 x, S32 y, MASK mask) override;
 
 protected:
     void initImage();
diff --git a/indra/newview/lltinygltfhelper.cpp b/indra/newview/lltinygltfhelper.cpp
index 4e41f9959a..168708ca37 100644
--- a/indra/newview/lltinygltfhelper.cpp
+++ b/indra/newview/lltinygltfhelper.cpp
@@ -31,7 +31,7 @@
 #include "llviewertexture.h"
 #include "llviewertexturelist.h"
 
-void strip_alpha_channel(LLPointer<LLImageRaw>& img)
+static void strip_alpha_channel(LLPointer<LLImageRaw>& img)
 {
     if (img->getComponents() == 4)
     {
@@ -45,13 +45,13 @@ void strip_alpha_channel(LLPointer<LLImageRaw>& img)
 // PRECONDITIONS:
 // dst_img must be 3 component
 // src_img and dst_image must have the same dimensions
-void copy_red_channel(LLPointer<LLImageRaw>& src_img, LLPointer<LLImageRaw>& dst_img)
+static void copy_red_channel(const LLPointer<LLImageRaw>& src_img, LLPointer<LLImageRaw>& dst_img)
 {
     llassert(src_img->getWidth() == dst_img->getWidth() && src_img->getHeight() == dst_img->getHeight());
     llassert(dst_img->getComponents() == 3);
 
     U32 pixel_count = dst_img->getWidth() * dst_img->getHeight();
-    U8* src = src_img->getData();
+    const U8* src = src_img->getData();
     U8* dst = dst_img->getData();
     S8 src_components = src_img->getComponents();
 
@@ -97,6 +97,8 @@ void LLTinyGLTFHelper::initFetchedTextures(tinygltf::Material& material,
                 int mr_idx = material.pbrMetallicRoughness.metallicRoughnessTexture.index;
                 if (occlusion_idx != mr_idx)
                 {
+                    LLImageDataLock lockIn(occlusion_img);
+                    LLImageDataLock lockOut(mr_img);
                     //scale occlusion image to match resolution of mr image
                     occlusion_img->scale(mr_img->getWidth(), mr_img->getHeight());
 
@@ -114,6 +116,7 @@ void LLTinyGLTFHelper::initFetchedTextures(tinygltf::Material& material,
     }
     else if (occlusion_img)
     {
+        LLImageDataSharedLock lock(occlusion_img);
         //no mr but occlusion exists, make a white mr_img and copy occlusion red channel over
         mr_img = new LLImageRaw(occlusion_img->getWidth(), occlusion_img->getHeight(), 3);
         mr_img->clear(255, 255, 255);
@@ -203,7 +206,7 @@ LLImageRaw * LLTinyGLTFHelper::getTexture(const std::string & folder, const tiny
 bool LLTinyGLTFHelper::loadModel(const std::string& filename, tinygltf::Model& model_in)
 {
     std::string exten = gDirUtilp->getExtension(filename);
-    
+
     if (exten == "gltf" || exten == "glb")
     {
         tinygltf::TinyGLTF loader;
@@ -240,7 +243,7 @@ bool LLTinyGLTFHelper::loadModel(const std::string& filename, tinygltf::Model& m
             LL_WARNS("GLTF") << "Cannot load. File has no materials " << filename << LL_ENDL;
             return false;
         }
-        
+
         return true;
     }
 
@@ -248,6 +251,43 @@ bool LLTinyGLTFHelper::loadModel(const std::string& filename, tinygltf::Model& m
     return false;
 }
 
+bool LLTinyGLTFHelper::saveModel(const std::string& filename, tinygltf::Model& model_in)
+{
+    std::string exten = gDirUtilp->getExtension(filename);
+
+    bool success = false;
+
+    if (exten == "gltf" || exten == "glb")
+    {
+        tinygltf::TinyGLTF writer;
+
+        std::string filename_lc = filename;
+        LLStringUtil::toLower(filename_lc);
+
+
+        bool embed_images = false;
+        bool embed_buffers = false;
+        bool pretty_print = true;
+        bool write_binary = false;
+
+
+        if (std::string::npos == filename_lc.rfind(".gltf"))
+        {  // file is binary
+            embed_images = embed_buffers = write_binary = true;
+        }
+
+        success = writer.WriteGltfSceneToFile(&model_in, filename, embed_images, embed_buffers, pretty_print, write_binary);
+
+        if (!success)
+        {
+            LL_WARNS("GLTF") << "Failed to save" << LL_ENDL;
+            return false;
+        }
+    }
+
+    return success;
+}
+
 bool LLTinyGLTFHelper::getMaterialFromModel(
     const std::string& filename,
     const tinygltf::Model& model_in,
@@ -299,7 +339,7 @@ bool LLTinyGLTFHelper::getMaterialFromModel(
 
     if (base_color_tex)
     {
-        base_color_tex->addTextureStats(64.f * 64.f, TRUE);
+        base_color_tex->addTextureStats(64.f * 64.f, true);
         material->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_BASE_COLOR] = base_color_tex->getID();
         material->mBaseColorTexture = base_color_tex;
     }
@@ -311,7 +351,7 @@ bool LLTinyGLTFHelper::getMaterialFromModel(
 
     if (normal_tex)
     {
-        normal_tex->addTextureStats(64.f * 64.f, TRUE);
+        normal_tex->addTextureStats(64.f * 64.f, true);
         material->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_NORMAL] = normal_tex->getID();
         material->mNormalTexture = normal_tex;
     }
@@ -323,7 +363,7 @@ bool LLTinyGLTFHelper::getMaterialFromModel(
 
     if (mr_tex)
     {
-        mr_tex->addTextureStats(64.f * 64.f, TRUE);
+        mr_tex->addTextureStats(64.f * 64.f, true);
         material->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_METALLIC_ROUGHNESS] = mr_tex->getID();
         material->mMetallicRoughnessTexture = mr_tex;
     }
@@ -335,7 +375,7 @@ bool LLTinyGLTFHelper::getMaterialFromModel(
 
     if (emissive_tex)
     {
-        emissive_tex->addTextureStats(64.f * 64.f, TRUE);
+        emissive_tex->addTextureStats(64.f * 64.f, true);
         material->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_EMISSIVE] = emissive_tex->getID();
         material->mEmissiveTexture = emissive_tex;
     }
diff --git a/indra/newview/lltinygltfhelper.h b/indra/newview/lltinygltfhelper.h
index da505b41e9..a259609404 100644
--- a/indra/newview/lltinygltfhelper.h
+++ b/indra/newview/lltinygltfhelper.h
@@ -42,6 +42,7 @@ namespace LLTinyGLTFHelper
     LLImageRaw* getTexture(const std::string& folder, const tinygltf::Model& model, S32 texture_index, bool flip = true);
 
     bool loadModel(const std::string& filename, tinygltf::Model& model_out);
+    bool saveModel(const std::string& filename, tinygltf::Model& model_in);
 
     bool getMaterialFromModel(
         const std::string& filename,
diff --git a/indra/newview/lltoast.cpp b/indra/newview/lltoast.cpp
index 2e00b2c382..638a01a080 100644
--- a/indra/newview/lltoast.cpp
+++ b/indra/newview/lltoast.cpp
@@ -44,13 +44,13 @@ LLToastLifeTimer::LLToastLifeTimer(LLToast* toast, F32 period)
 }
 
 /*virtual*/
-BOOL LLToastLifeTimer::tick()
+bool LLToastLifeTimer::tick()
 {
     if (mEventTimer.hasExpired())
     {
         mToast->expire();
     }
-    return FALSE;
+    return false;
 }
 
 void LLToastLifeTimer::stop()
@@ -68,7 +68,7 @@ void LLToastLifeTimer::restart()
     mEventTimer.reset();
 }
 
-BOOL LLToastLifeTimer::getStarted()
+bool LLToastLifeTimer::getStarted()
 {
     return mEventTimer.getStarted();
 }
@@ -121,11 +121,11 @@ LLToast::LLToast(const LLToast::Params& p)
 
     buildFromFile("panel_toast.xml");
 
-    setCanDrag(FALSE);
+    setCanDrag(false);
 
     mWrapperPanel = getChild<LLPanel>("wrapper_panel");
 
-    setBackgroundOpaque(TRUE); // *TODO: obsolete
+    setBackgroundOpaque(true); // *TODO: obsolete
     updateTransparency();
 
     if(p.panel())
@@ -151,7 +151,7 @@ LLToast::LLToast(const LLToast::Params& p)
     }
 }
 
-void LLToast::reshape(S32 width, S32 height, BOOL called_from_parent)
+void LLToast::reshape(S32 width, S32 height, bool called_from_parent)
 {
     // We shouldn't  use reshape from LLModalDialog since it changes toasts position.
     // Toasts position should be controlled only by toast screen channel, see LLScreenChannelBase.
@@ -160,14 +160,14 @@ void LLToast::reshape(S32 width, S32 height, BOOL called_from_parent)
 }
 
 //--------------------------------------------------------------------------
-BOOL LLToast::postBuild()
+bool LLToast::postBuild()
 {
     if(!mCanFade)
     {
         mTimer->stop();
     }
 
-    return TRUE;
+    return true;
 }
 
 //--------------------------------------------------------------------------
@@ -209,7 +209,7 @@ void LLToast::hide()
 {
     if (!mIsHidden)
     {
-        setVisible(FALSE);
+        setVisible(false);
         setFading(false);
         mTimer->stop();
         mIsHidden = true;
@@ -218,7 +218,7 @@ void LLToast::hide()
 }
 
 /*virtual*/
-void LLToast::setFocus(BOOL b)
+void LLToast::setFocus(bool b)
 {
     if (b
         && !hasFocus()
@@ -226,9 +226,9 @@ void LLToast::setFocus(BOOL b)
         && mWrapperPanel
         && !mWrapperPanel->getChildList()->empty())
     {
-        LLModalDialog::setFocus(TRUE);
+        LLModalDialog::setFocus(true);
         // mostly for buttons
-        mPanel->setFocus(TRUE);
+        mPanel->setFocus(true);
     }
     else
     {
@@ -391,7 +391,7 @@ void LLToast::draw()
 }
 
 //--------------------------------------------------------------------------
-void LLToast::setVisible(BOOL show)
+void LLToast::setVisible(bool show)
 {
     if(mIsHidden)
     {
@@ -495,7 +495,7 @@ void LLToast::updateHoveredState()
             sendChildToFront(mHideBtn);
             if(mHideBtn && mHideBtn->getEnabled())
             {
-                mHideBtn->setVisible(TRUE);
+                mHideBtn->setVisible(true);
             }
 
             mToastMouseEnterSignal(this, getValue());
@@ -518,7 +518,7 @@ void LLToast::updateHoveredState()
                     mHideBtnPressed = false;
                     return;
                 }
-                mHideBtn->setVisible(FALSE);
+                mHideBtn->setVisible(false);
             }
 
             mToastMouseLeaveSignal(this, getValue());
@@ -526,7 +526,7 @@ void LLToast::updateHoveredState()
     }
 }
 
-void LLToast::setBackgroundOpaque(BOOL b)
+void LLToast::setBackgroundOpaque(bool b)
 {
     if(mWrapperPanel && !isBackgroundVisible())
     {
@@ -583,7 +583,7 @@ void LLNotificationsUI::LLToast::startTimer()
 
 //--------------------------------------------------------------------------
 
-BOOL LLToast::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToast::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if(mHideBtn && mHideBtn->getEnabled())
     {
diff --git a/indra/newview/lltoast.h b/indra/newview/lltoast.h
index a0003dfa70..cf116bfadf 100644
--- a/indra/newview/lltoast.h
+++ b/indra/newview/lltoast.h
@@ -53,11 +53,11 @@ public:
     LLToastLifeTimer(LLToast* toast, F32 period);
 
     /*virtual*/
-    BOOL tick();
+    bool tick();
     void stop();
     void start();
     void restart();
-    BOOL getStarted();
+    bool getStarted();
     void setPeriod(F32 period);
     F32 getRemainingTimeF32();
 
@@ -109,16 +109,16 @@ public:
     static void updateClass();
     static void cleanupToasts();
 
-    static BOOL isAlertToastShown() { return sModalToastsList.size() > 0; }
+    static bool isAlertToastShown() { return sModalToastsList.size() > 0; }
 
     LLToast(const LLToast::Params& p);
     virtual ~LLToast();
-    BOOL postBuild();
+    bool postBuild();
 
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
 
     // Toast handlers
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask);
 
     //Fading
 
@@ -147,13 +147,13 @@ public:
     //
     virtual void draw();
     //
-    virtual void setVisible(BOOL show);
+    virtual void setVisible(bool show);
 
-    /*virtual*/ void setBackgroundOpaque(BOOL b);
+    /*virtual*/ void setBackgroundOpaque(bool b);
     //
     virtual void hide();
 
-    /*virtual*/ void setFocus(BOOL b);
+    /*virtual*/ void setFocus(bool b);
 
     /*virtual*/ void onFocusLost();
 
@@ -236,7 +236,7 @@ private:
     bool        mCanBeStored;
     bool        mHideBtnEnabled;
     bool        mHideBtnPressed;
-    bool        mIsHidden;  // this flag is TRUE when a toast has faded or was hidden with (x) button (EXT-1849)
+    bool        mIsHidden;  // this flag is true when a toast has faded or was hidden with (x) button (EXT-1849)
     bool        mIsTip;
     bool        mIsFading;
     bool        mIsHovered;
diff --git a/indra/newview/lltoastalertpanel.cpp b/indra/newview/lltoastalertpanel.cpp
index a3b2c79015..05ac9dacf3 100644
--- a/indra/newview/lltoastalertpanel.cpp
+++ b/indra/newview/lltoastalertpanel.cpp
@@ -92,8 +92,8 @@ LLToastAlertPanel::LLToastAlertPanel( LLNotificationPtr notification, bool modal
     bool is_password = false;
     bool allow_emoji = false;
 
-    LLToastPanel::setBackgroundVisible(FALSE);
-    LLToastPanel::setBackgroundOpaque(TRUE);
+    LLToastPanel::setBackgroundVisible(false);
+    LLToastPanel::setBackgroundOpaque(true);
 
 
     typedef std::vector<std::pair<std::string, std::string> > options_t;
@@ -161,14 +161,14 @@ LLToastAlertPanel::LLToastAlertPanel( LLNotificationPtr notification, bool modal
         options = supplied_options;
     }
 
-    S32 num_options = options.size();
+    auto num_options = options.size();
 
     // Calc total width of buttons
     S32 button_width = 0;
     S32 sp = font->getWidth(std::string("OO"));
     S32 btn_total_width = 0;
     S32 default_size_btns = 0;
-    for( S32 i = 0; i < num_options; i++ )
+    for (size_t i = 0; i < num_options; i++)
     {
         S32 w = S32(font->getWidth( options[i].second ) + 0.99f) + sp + 2 * LLBUTTON_H_PAD;
         if (mButtonData[i].mWidth > w)
@@ -184,7 +184,7 @@ LLToastAlertPanel::LLToastAlertPanel( LLNotificationPtr notification, bool modal
 
     if( num_options > 1 )
     {
-        btn_total_width = btn_total_width + (button_width * default_size_btns) + ((num_options - 1) * BTN_HPAD);
+        btn_total_width = btn_total_width + (button_width * default_size_btns) + ((static_cast<S32>(num_options) - 1) * BTN_HPAD);
     }
     else
     {
@@ -249,7 +249,7 @@ LLToastAlertPanel::LLToastAlertPanel( LLNotificationPtr notification, bool modal
         dialog_width += 32 + HPAD;
     }
 
-    LLToastPanel::reshape( dialog_width, dialog_height, FALSE );
+    LLToastPanel::reshape( dialog_width, dialog_height, false );
 
     S32 msg_y = LLToastPanel::getRect().getHeight() - VPAD;
     S32 msg_x = HPAD;
@@ -372,7 +372,7 @@ LLToastAlertPanel::LLToastAlertPanel( LLNotificationPtr notification, bool modal
 
             if( i == mDefaultOption )
             {
-                btn->setFocus(TRUE);
+                btn->setFocus(true);
             }
         }
         button_left += ((mButtonData[i].mWidth == 0) ? button_width : mButtonData[i].mWidth) + BTN_HPAD;
@@ -381,11 +381,11 @@ LLToastAlertPanel::LLToastAlertPanel( LLNotificationPtr notification, bool modal
     setCheckBoxes(HPAD, VPAD);
 
     // *TODO: check necessity of this code
-    //gFloaterView->adjustToFitScreen(this, FALSE);
+    //gFloaterView->adjustToFitScreen(this, false);
     if (mLineEditor)
     {
         mLineEditor->selectAll();
-        mLineEditor->setFocus(TRUE);
+        mLineEditor->setFocus(true);
     }
     if(mDefaultOption >= 0)
     {
@@ -398,7 +398,7 @@ LLToastAlertPanel::LLToastAlertPanel( LLNotificationPtr notification, bool modal
             LLTransientFloaterMgr::GLOBAL, this);
 }
 
-void LLToastAlertPanel::setVisible( BOOL visible )
+void LLToastAlertPanel::setVisible( bool visible )
 {
     // only make the "ding" sound if it's newly visible
     if( visible && !LLToastPanel::getVisible() )
@@ -431,16 +431,16 @@ LLToastAlertPanel::~LLToastAlertPanel()
         if (current_selection)
         {
             // If the focus moved to some other view though, move the focus there
-            current_selection->setFocus(TRUE);
+            current_selection->setFocus(true);
         }
         else
         {
-            mPreviouslyFocusedView.get()->setFocus(TRUE);
+            mPreviouslyFocusedView.get()->setFocus(true);
         }
     }
 }
 
-BOOL LLToastAlertPanel::hasTitleBar() const
+bool LLToastAlertPanel::hasTitleBar() const
 {
     // *TODO: check necessity of this code
     /*
@@ -451,7 +451,7 @@ BOOL LLToastAlertPanel::hasTitleBar() const
     return false;
 }
 
-BOOL LLToastAlertPanel::handleKeyHere(KEY key, MASK mask )
+bool LLToastAlertPanel::handleKeyHere(KEY key, MASK mask )
 {
     if( KEY_RETURN == key && mask == MASK_NONE )
     {
@@ -461,31 +461,31 @@ BOOL LLToastAlertPanel::handleKeyHere(KEY key, MASK mask )
             // If we have a default button, click it when return is pressed
             defaultBtn->onCommit();
         }
-        return TRUE;
+        return true;
     }
     else if (KEY_RIGHT == key)
     {
-        LLToastPanel::focusNextItem(FALSE);
-        return TRUE;
+        LLToastPanel::focusNextItem(false);
+        return true;
     }
     else if (KEY_LEFT == key)
     {
-        LLToastPanel::focusPrevItem(FALSE);
-        return TRUE;
+        LLToastPanel::focusPrevItem(false);
+        return true;
     }
     else if (KEY_TAB == key && mask == MASK_NONE)
     {
-        LLToastPanel::focusNextItem(FALSE);
-        return TRUE;
+        LLToastPanel::focusNextItem(false);
+        return true;
     }
     else if (KEY_TAB == key && mask == MASK_SHIFT)
     {
-        LLToastPanel::focusPrevItem(FALSE);
-        return TRUE;
+        LLToastPanel::focusPrevItem(false);
+        return true;
     }
     else
     {
-        return TRUE;
+        return true;
     }
 }
 
diff --git a/indra/newview/lltoastalertpanel.h b/indra/newview/lltoastalertpanel.h
index 9721a4b1b6..c2cdd775f1 100644
--- a/indra/newview/lltoastalertpanel.h
+++ b/indra/newview/lltoastalertpanel.h
@@ -56,14 +56,14 @@ public:
     // User's responsibility to call show() after creating these.
     LLToastAlertPanel( LLNotificationPtr notep, bool is_modal );
 
-    virtual BOOL    handleKeyHere(KEY key, MASK mask );
+    virtual bool    handleKeyHere(KEY key, MASK mask );
 
     virtual void    draw();
-    virtual void    setVisible( BOOL visible );
+    virtual void    setVisible( bool visible );
 
-    void            setCaution(BOOL val = TRUE) { mCaution = val; }
-    // If mUnique==TRUE only one copy of this message should exist
-    void            setUnique(BOOL val = TRUE) { mUnique = val; }
+    void            setCaution(bool val = true) { mCaution = val; }
+    // If mUnique==true only one copy of this message should exist
+    void            setUnique(bool val = true) { mUnique = val; }
     void            setEditTextArgs(const LLSD& edit_args);
 
     void onButtonPressed(const LLSD& data, S32 button);
@@ -75,7 +75,7 @@ private:
     // No you can't kill it.  It can only kill itself.
 
     // Does it have a readable title label, or minimize or close buttons?
-    BOOL hasTitleBar() const;
+    bool hasTitleBar() const;
 
 private:
     static LLControlGroup* sSettings;
@@ -90,8 +90,8 @@ private:
     std::vector<ButtonData> mButtonData;
 
     S32             mDefaultOption;
-    BOOL            mCaution;
-    BOOL            mUnique;
+    bool            mCaution;
+    bool            mUnique;
     LLUIString      mLabel;
     LLFrameTimer    mDefaultBtnTimer;
     // For Dialogs that take a line as text as input:
diff --git a/indra/newview/lltoastgroupnotifypanel.cpp b/indra/newview/lltoastgroupnotifypanel.cpp
index 2bbf37680b..3c3440d41a 100644
--- a/indra/newview/lltoastgroupnotifypanel.cpp
+++ b/indra/newview/lltoastgroupnotifypanel.cpp
@@ -64,7 +64,7 @@ LLToastGroupNotifyPanel::LLToastGroupNotifyPanel(const LLNotificationPtr& notifi
     }
 
     //group icon
-    LLGroupIconCtrl* pGroupIcon = getChild<LLGroupIconCtrl>("group_icon", TRUE);
+    LLGroupIconCtrl* pGroupIcon = getChild<LLGroupIconCtrl>("group_icon", true);
 
     // We should already have this data preloaded, so no sense in setting icon through setValue(group_id)
     pGroupIcon->setIconId(groupData.mInsigniaID);
@@ -106,23 +106,23 @@ LLToastGroupNotifyPanel::LLToastGroupNotifyPanel(const LLNotificationPtr& notifi
     LLFontGL* subject_font = LLFontGL::getFontByName(getString("subject_font"));
     if (subject_font)
         style.font = subject_font;
-    pMessageText->appendText(subject, FALSE, style);
+    pMessageText->appendText(subject, false, style);
 
     LLFontGL* date_font = LLFontGL::getFontByName(getString("date_font"));
     if (date_font)
         style.font = date_font;
-    pMessageText->appendText(timeStr + "\n", TRUE, style);
+    pMessageText->appendText(timeStr + "\n", true, style);
 
     style.font = pMessageText->getFont();
-    pMessageText->appendText(message, TRUE, style);
+    pMessageText->appendText(message, true, style);
 
     //attachment
-    BOOL hasInventory = payload["inventory_offer"].isDefined();
+    bool hasInventory = payload["inventory_offer"].isDefined();
 
     //attachment text
     LLTextBox * pAttachLink = getChild<LLTextBox>("attachment");
     //attachment icon
-    LLIconCtrl* pAttachIcon = getChild<LLIconCtrl>("attachment_icon", TRUE);
+    LLIconCtrl* pAttachIcon = getChild<LLIconCtrl>("attachment_icon", true);
 
     //If attachment is empty let it be invisible and not take place at the panel
     pAttachLink->setVisible(hasInventory);
@@ -190,8 +190,8 @@ void LLToastGroupNotifyPanel::onClickAttachment()
         pAttachLink->setColor(textColor);
 
         LLIconCtrl* pAttachIcon =
-                getChild<LLIconCtrl> ("attachment_icon", TRUE);
-        pAttachIcon->setEnabled(FALSE);
+                getChild<LLIconCtrl> ("attachment_icon", true);
+        pAttachIcon->setEnabled(false);
 
         //if attachment isn't openable - notify about saving
         if (!isAttachmentOpenable(mInventoryOffer->mType)) {
diff --git a/indra/newview/lltoastimpanel.cpp b/indra/newview/lltoastimpanel.cpp
index f7e2d49e13..42ee30409d 100644
--- a/indra/newview/lltoastimpanel.cpp
+++ b/indra/newview/lltoastimpanel.cpp
@@ -76,10 +76,10 @@ LLToastIMPanel::LLToastIMPanel(LLToastIMPanel::Params &p) : LLToastPanel(p.notif
         mMessage->clear();
 
         style_params.font.style ="ITALIC";
-        mMessage->appendText(p.from, FALSE, style_params);
+        mMessage->appendText(p.from, false, style_params);
 
         style_params.font.style = "ITALIC";
-        mMessage->appendText(p.message.substr(3), FALSE, style_params);
+        mMessage->appendText(p.message.substr(3), false, style_params);
     }
     else
     {
@@ -117,18 +117,18 @@ LLToastIMPanel::~LLToastIMPanel()
 }
 
 //virtual
-BOOL LLToastIMPanel::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToastIMPanel::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    if (LLPanel::handleMouseUp(x,y,mask) == FALSE)
+    if (!LLPanel::handleMouseUp(x, y, mask))
     {
         mNotification->respond(mNotification->getResponseTemplate());
     }
 
-    return TRUE;
+    return true;
 }
 
 //virtual
-BOOL LLToastIMPanel::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLToastIMPanel::handleToolTip(S32 x, S32 y, MASK mask)
 {
     // It's not our direct child, so parentPointInView() doesn't work.
     LLRect ctrl_rect;
@@ -137,14 +137,14 @@ BOOL LLToastIMPanel::handleToolTip(S32 x, S32 y, MASK mask)
     if (ctrl_rect.pointInRect(x, y))
     {
         spawnNameToolTip();
-        return TRUE;
+        return true;
     }
 
     mGroupIcon->localRectToOtherView(mGroupIcon->getLocalRect(), &ctrl_rect, this);
     if(mGroupIcon->getVisible() && ctrl_rect.pointInRect(x, y))
     {
         spawnGroupIconToolTip();
-        return TRUE;
+        return true;
     }
 
     return LLToastPanel::handleToolTip(x, y, mask);
@@ -162,11 +162,11 @@ void LLToastIMPanel::spawnNameToolTip()
     params.background_visible(false);
     if(!mIsGroupMsg)
     {
-    params.click_callback(boost::bind(&LLFloaterReg::showInstance, "inspect_avatar", LLSD().with("avatar_id", mAvatarID), FALSE));
+    params.click_callback(boost::bind(&LLFloaterReg::showInstance, "inspect_avatar", LLSD().with("avatar_id", mAvatarID), false));
     }
     else
     {
-        params.click_callback(boost::bind(&LLFloaterReg::showInstance, "inspect_group", LLSD().with("group_id", mSessionID), FALSE));
+        params.click_callback(boost::bind(&LLFloaterReg::showInstance, "inspect_group", LLSD().with("group_id", mSessionID), false));
     }
     params.delay_time(0.0f);        // spawn instantly on hover
     params.image(LLUI::getUIImage("Info_Small"));
@@ -192,7 +192,7 @@ void LLToastIMPanel::spawnGroupIconToolTip()
 
     LLInspector::Params params;
     params.fillFrom(LLUICtrlFactory::instance().getDefaultParams<LLInspector>());
-    params.click_callback(boost::bind(&LLFloaterReg::showInstance, "inspect_group", LLSD().with("group_id", mSessionID), FALSE));
+    params.click_callback(boost::bind(&LLFloaterReg::showInstance, "inspect_group", LLSD().with("group_id", mSessionID), false));
     params.delay_time(0.100f);
     params.image(LLUI::getUIImage("Info_Small"));
     params.message(g_data.mName);
@@ -205,9 +205,9 @@ void LLToastIMPanel::spawnGroupIconToolTip()
 
 void LLToastIMPanel::initIcon()
 {
-    mAvatarIcon->setVisible(FALSE);
-    mGroupIcon->setVisible(FALSE);
-    mAdhocIcon->setVisible(FALSE);
+    mAvatarIcon->setVisible(false);
+    mGroupIcon->setVisible(false);
+    mAdhocIcon->setVisible(false);
 
     if(mAvatarName->getValue().asString() == SYSTEM_FROM)
     {
@@ -227,15 +227,15 @@ void LLToastIMPanel::initIcon()
         switch(im_session->mSessionType)
         {
         case LLIMModel::LLIMSession::P2P_SESSION:
-            mAvatarIcon->setVisible(TRUE);
+            mAvatarIcon->setVisible(true);
             mAvatarIcon->setValue(mAvatarID);
             break;
         case LLIMModel::LLIMSession::GROUP_SESSION:
-            mGroupIcon->setVisible(TRUE);
+            mGroupIcon->setVisible(true);
             mGroupIcon->setValue(mSessionID);
             break;
         case LLIMModel::LLIMSession::ADHOC_SESSION:
-            mAdhocIcon->setVisible(TRUE);
+            mAdhocIcon->setVisible(true);
             mAdhocIcon->setValue(im_session->mOtherParticipantID);
             mAdhocIcon->setToolTip(im_session->mName);
             break;
diff --git a/indra/newview/lltoastimpanel.h b/indra/newview/lltoastimpanel.h
index 07985f205e..dfb6eea780 100644
--- a/indra/newview/lltoastimpanel.h
+++ b/indra/newview/lltoastimpanel.h
@@ -52,8 +52,8 @@ public:
 
     LLToastIMPanel(LLToastIMPanel::Params &p);
     virtual ~LLToastIMPanel();
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleToolTip(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleToolTip(S32 x, S32 y, MASK mask);
 private:
     void showInspector();
 
diff --git a/indra/newview/lltoastnotifypanel.cpp b/indra/newview/lltoastnotifypanel.cpp
index a091370ee8..6c0b3bfa13 100644
--- a/indra/newview/lltoastnotifypanel.cpp
+++ b/indra/newview/lltoastnotifypanel.cpp
@@ -66,7 +66,7 @@ void LLToastNotifyPanel::addDefaultButton()
 {
     LLSD form_element;
     form_element.with("name", "OK").with("text", LLTrans::getString("ok")).with("default", true);
-    LLButton* ok_btn = createButton(form_element, FALSE);
+    LLButton* ok_btn = createButton(form_element, false);
     LLRect new_btn_rect(ok_btn->getRect());
 
     new_btn_rect.setOriginAndSize(llabs(getRect().getWidth() - BUTTON_WIDTH)/ 2, BOTTOM_PAD,
@@ -77,7 +77,7 @@ void LLToastNotifyPanel::addDefaultButton()
     mNumButtons = 1;
     mAddedDefaultBtn = true;
 }
-LLButton* LLToastNotifyPanel::createButton(const LLSD& form_element, BOOL is_option)
+LLButton* LLToastNotifyPanel::createButton(const LLSD& form_element, bool is_option)
 {
     InstanceAndS32* userdata = new InstanceAndS32;
     userdata->mSelf = this;
@@ -224,7 +224,7 @@ void LLToastNotifyPanel::adjustPanelForScriptNotice(S32 button_panel_width, S32
 void LLToastNotifyPanel::adjustPanelForTipNotice()
 {
     //we don't need display ControlPanel for tips because they doesn't contain any buttons.
-    mControlPanel->setVisible(FALSE);
+    mControlPanel->setVisible(false);
     reshape(getRect().getWidth(), mInfoPanel->getRect().getHeight());
 
     if (mNotification->getPayload().has("respond_on_mousedown")
@@ -251,7 +251,7 @@ void LLToastNotifyPanel::onClickButton(void* data)
     }
 
     // disable all buttons
-    self->mControlPanel->setEnabled(FALSE);
+    self->mControlPanel->setEnabled(false);
 
     // this might repost notification with new form data/enabled buttons
     self->mNotification->respond(response);
@@ -266,7 +266,7 @@ void LLToastNotifyPanel::init( LLRect rect, bool show_images )
     setXMLFilename("");
     buildFromFile("panel_notification.xml");
 
-    if (rect != LLRect::null)
+    if(rect != LLRect::null)
     {
         this->setShape(rect);
     }
@@ -319,7 +319,7 @@ void LLToastNotifyPanel::init( LLRect rect, bool show_images )
     }
 
     mTextBox->setMaxTextLength(LLToastPanel::MAX_TEXT_LENGTH);
-    mTextBox->setVisible(TRUE);
+    mTextBox->setVisible(true);
     mTextBox->setPlainText(!show_images);
     mTextBox->setUseEmoji(!mIsScriptDialog);
     mTextBox->setContentTrusted(is_content_trusted);
@@ -351,7 +351,7 @@ void LLToastNotifyPanel::init( LLRect rect, bool show_images )
                 // a textbox pretending to be a button.
                 continue;
             }
-            LLButton* new_button = createButton(form_element, TRUE);
+            LLButton* new_button = createButton(form_element, true);
             buttons_width += new_button->getRect().getWidth();
             S32 index = form_element["index"].asInteger();
             buttons.push_back(index_button_pair_t(index,new_button));
@@ -484,7 +484,7 @@ LLIMToastNotifyPanel::~LLIMToastNotifyPanel()
 {
 }
 
-void LLIMToastNotifyPanel::reshape(S32 width, S32 height, BOOL called_from_parent /* = TRUE */)
+void LLIMToastNotifyPanel::reshape(S32 width, S32 height, bool called_from_parent /* = true */)
 {
     LLToastPanel::reshape(width, height, called_from_parent);
     snapToMessageHeight();
diff --git a/indra/newview/lltoastnotifypanel.h b/indra/newview/lltoastnotifypanel.h
index 66e9ff238d..d694513aba 100644
--- a/indra/newview/lltoastnotifypanel.h
+++ b/indra/newview/lltoastnotifypanel.h
@@ -73,7 +73,7 @@ public:
     bool isControlPanelEnabled() const;
 
 protected:
-    LLButton* createButton(const LLSD& form_element, BOOL is_option);
+    LLButton* createButton(const LLSD& form_element, bool is_option);
 
     // Used for callbacks
     struct InstanceAndS32
@@ -155,7 +155,7 @@ public:
 
     ~LLIMToastNotifyPanel();
 
-    /*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+    /*virtual*/ void reshape(S32 width, S32 height, bool called_from_parent = true);
 
 protected:
     LLTextBase* mParentText;
diff --git a/indra/newview/lltoastpanel.cpp b/indra/newview/lltoastpanel.cpp
index 2834143dd6..0ac2653021 100644
--- a/indra/newview/lltoastpanel.cpp
+++ b/indra/newview/lltoastpanel.cpp
@@ -216,10 +216,10 @@ bool LLCheckBoxToastPanel::setCheckBox(const std::string& check_title,
     S32 dialog_width = max_msg_width + 2 * h_pad;
 
     S32 dialog_height = LLToastPanel::getRect().getHeight();
-    dialog_height += LINE_HEIGHT * lines.size();
+    dialog_height += LINE_HEIGHT * static_cast<S32>(lines.size());
     dialog_height += LINE_HEIGHT / 2;
 
-    LLToastPanel::reshape(dialog_width, dialog_height, FALSE);
+    LLToastPanel::reshape(dialog_width, dialog_height, false);
 
     S32 msg_x = (LLToastPanel::getRect().getWidth() - max_msg_width) / 2;
 
@@ -227,7 +227,7 @@ bool LLCheckBoxToastPanel::setCheckBox(const std::string& check_title,
     LLRect check_rect;
     // if we are part of the toast, we need to leave space for buttons
     S32 msg_y = v_pad + (parent_view ? 0 : (BTN_HEIGHT + LINE_HEIGHT / 2));
-    mCheck->setRect(check_rect.setOriginAndSize(msg_x, msg_y, max_msg_width, LINE_HEIGHT*lines.size()));
+    mCheck->setRect(check_rect.setOriginAndSize(msg_x, msg_y, max_msg_width, LINE_HEIGHT * static_cast<S32>(lines.size())));
     mCheck->setLabel(check_title);
     mCheck->setCommitCallback(cb);
 
@@ -246,7 +246,7 @@ bool LLCheckBoxToastPanel::setCheckBox(const std::string& check_title,
 
 void LLCheckBoxToastPanel::onCommitCheckbox(LLUICtrl* ctrl)
 {
-    BOOL check = ctrl->getValue().asBoolean();
+    bool check = ctrl->getValue().asBoolean();
     if (mNotification->getForm()->getIgnoreType() == LLNotificationForm::IGNORE_SHOW_AGAIN)
     {
         // question was "show again" so invert value to get "ignore"
diff --git a/indra/newview/lltoastscriptquestion.cpp b/indra/newview/lltoastscriptquestion.cpp
index fd1e30345c..25dc0982b8 100644
--- a/indra/newview/lltoastscriptquestion.cpp
+++ b/indra/newview/lltoastscriptquestion.cpp
@@ -40,7 +40,7 @@ LLToastPanel(notification)
     buildFromFile("panel_script_question_toast.xml");
 }
 
-BOOL LLToastScriptQuestion::postBuild()
+bool LLToastScriptQuestion::postBuild()
 {
     createButtons();
 
@@ -52,11 +52,11 @@ BOOL LLToastScriptQuestion::postBuild()
 
     snapToMessageHeight();
 
-    return TRUE;
+    return true;
 }
 
 // virtual
-void LLToastScriptQuestion::setFocus(BOOL b)
+void LLToastScriptQuestion::setFocus(bool b)
 {
     LLToastPanel::setFocus(b);
     // toast can fade out and disappear with focus ON, so reset to default anyway
@@ -134,7 +134,7 @@ void LLToastScriptQuestion::createButtons()
 
             if (form_element.has("default") && form_element["default"].asBoolean())
             {
-                button->setFocus(TRUE);
+                button->setFocus(true);
                 setDefaultBtn(button);
             }
         }
diff --git a/indra/newview/lltoastscriptquestion.h b/indra/newview/lltoastscriptquestion.h
index fc129236db..41680df5c9 100644
--- a/indra/newview/lltoastscriptquestion.h
+++ b/indra/newview/lltoastscriptquestion.h
@@ -36,10 +36,10 @@ class LLToastScriptQuestion : public LLToastPanel
 
 public:
     LLToastScriptQuestion(const LLNotificationPtr& notification);
-    virtual BOOL postBuild();
+    bool postBuild() override;
     virtual ~LLToastScriptQuestion(){};
 
-    /*virtual*/ void setFocus(BOOL b);
+    void setFocus(bool b) override;
 
 private:
     void snapToMessageHeight();
diff --git a/indra/newview/lltoastscripttextbox.cpp b/indra/newview/lltoastscripttextbox.cpp
index 72057fe42b..de555ca895 100644
--- a/indra/newview/lltoastscripttextbox.cpp
+++ b/indra/newview/lltoastscripttextbox.cpp
@@ -58,7 +58,7 @@ LLToastScriptTextbox::LLToastScriptTextbox(const LLNotificationPtr& notification
 
     LLStyle::Params style;
     style.font = pMessageText->getFont();
-    pMessageText->appendText(message, TRUE, style);
+    pMessageText->appendText(message, true, style);
 
     //submit button
     LLButton* pSubmitBtn = getChild<LLButton>("btn_submit");
diff --git a/indra/newview/lltool.cpp b/indra/newview/lltool.cpp
index 1746e805ad..c595fc42ca 100644
--- a/indra/newview/lltool.cpp
+++ b/indra/newview/lltool.cpp
@@ -40,7 +40,7 @@
 #include "llagent.h"
 #include "llviewerjoystick.h"
 
-extern BOOL gDebugClicks;
+extern bool gDebugClicks;
 
 //static
 const std::string LLTool::sNameNull("null");
@@ -60,9 +60,9 @@ LLTool::~LLTool()
     }
 }
 
-BOOL LLTool::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, BOOL down)
+bool LLTool::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, bool down)
 {
-    BOOL result = LLMouseHandler::handleAnyMouseClick(x, y, mask, clicktype, down);
+    bool result = LLMouseHandler::handleAnyMouseClick(x, y, mask, clicktype, down);
 
     // This behavior was moved here from LLViewerWindow::handleAnyMouseClick, so it can be selectively overridden by LLTool subclasses.
     if(down && result)
@@ -76,7 +76,7 @@ BOOL LLTool::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clickt
     return result;
 }
 
-BOOL LLTool::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLTool::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (gDebugClicks)
     {
@@ -85,10 +85,10 @@ BOOL LLTool::handleMouseDown(S32 x, S32 y, MASK mask)
     // by default, didn't handle it
     // AGENT_CONTROL_LBUTTON_DOWN is handled by scanMouse() and scanKey()
     // LL_INFOS() << "LLTool::handleMouseDown" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
-BOOL LLTool::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLTool::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if (gDebugClicks)
     {
@@ -97,73 +97,73 @@ BOOL LLTool::handleMouseUp(S32 x, S32 y, MASK mask)
     // by default, didn't handle it
     // AGENT_CONTROL_LBUTTON_UP is handled by scanMouse() and scanKey()
     // LL_INFOS() << "LLTool::handleMouseUp" << LL_ENDL;
-    return TRUE;
+    return true;
 }
 
-BOOL LLTool::handleHover(S32 x, S32 y, MASK mask)
+bool LLTool::handleHover(S32 x, S32 y, MASK mask)
 {
     gViewerWindow->setCursor(UI_CURSOR_ARROW);
     LL_DEBUGS("UserInput") << "hover handled by a tool" << LL_ENDL;
     // by default, do nothing, say we handled it
-    return TRUE;
+    return true;
 }
 
-BOOL LLTool::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLTool::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     // by default, didn't handle it
     // LL_INFOS() << "LLTool::handleScrollWheel" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
-BOOL LLTool::handleScrollHWheel(S32 x, S32 y, S32 clicks)
+bool LLTool::handleScrollHWheel(S32 x, S32 y, S32 clicks)
 {
     // by default, didn't handle it
-    return FALSE;
+    return false;
 }
 
-BOOL LLTool::handleDoubleClick(S32 x,S32 y,MASK mask)
+bool LLTool::handleDoubleClick(S32 x,S32 y,MASK mask)
 {
     // LL_INFOS() << "LLTool::handleDoubleClick" << LL_ENDL;
     // by default, pretend it's a left click
-    return FALSE;
+    return false;
 }
 
-BOOL LLTool::handleRightMouseDown(S32 x,S32 y,MASK mask)
+bool LLTool::handleRightMouseDown(S32 x,S32 y,MASK mask)
 {
     // by default, didn't handle it
     // LL_INFOS() << "LLTool::handleRightMouseDown" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
-BOOL LLTool::handleRightMouseUp(S32 x, S32 y, MASK mask)
+bool LLTool::handleRightMouseUp(S32 x, S32 y, MASK mask)
 {
     // by default, didn't handle it
     // LL_INFOS() << "LLTool::handleRightMouseDown" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
-BOOL LLTool::handleMiddleMouseDown(S32 x,S32 y,MASK mask)
+bool LLTool::handleMiddleMouseDown(S32 x,S32 y,MASK mask)
 {
     // by default, didn't handle it
     // LL_INFOS() << "LLTool::handleMiddleMouseDown" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
-BOOL LLTool::handleMiddleMouseUp(S32 x, S32 y, MASK mask)
+bool LLTool::handleMiddleMouseUp(S32 x, S32 y, MASK mask)
 {
     // by default, didn't handle it
     // LL_INFOS() << "LLTool::handleMiddleMouseUp" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
-BOOL LLTool::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLTool::handleToolTip(S32 x, S32 y, MASK mask)
 {
     // by default, didn't handle it
     // LL_INFOS() << "LLTool::handleToolTip" << LL_ENDL;
-    return FALSE;
+    return false;
 }
 
-void LLTool::setMouseCapture( BOOL b )
+void LLTool::setMouseCapture( bool b )
 {
     if( b )
     {
@@ -180,14 +180,14 @@ void LLTool::setMouseCapture( BOOL b )
 void LLTool::draw()
 { }
 
-BOOL LLTool::hasMouseCapture()
+bool LLTool::hasMouseCapture()
 {
     return gFocusMgr.getMouseCapture() == (mComposite ? mComposite : this);
 }
 
-BOOL LLTool::handleKey(KEY key, MASK mask)
+bool LLTool::handleKey(KEY key, MASK mask)
 {
-    return FALSE;
+    return false;
 }
 
 LLTool* LLTool::getOverrideTool(MASK mask)
diff --git a/indra/newview/lltool.h b/indra/newview/lltool.h
index ba0a73fc72..10af156395 100644
--- a/indra/newview/lltool.h
+++ b/indra/newview/lltool.h
@@ -46,24 +46,24 @@ public:
     virtual ~LLTool();
 
     // Hack to support LLFocusMgr
-    virtual BOOL isView() const { return FALSE; }
+    virtual bool isView() const { return false; }
 
     // Virtual functions inherited from LLMouseHandler
-    virtual BOOL    handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, BOOL down);
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMiddleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMiddleMouseUp(S32 x, S32 y, MASK mask);
-
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleScrollWheel(S32 x, S32 y, S32 clicks);
-    virtual BOOL    handleScrollHWheel(S32 x, S32 y, S32 clicks);
-    virtual BOOL    handleDoubleClick(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleRightMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleToolTip(S32 x, S32 y, MASK mask);
-
-        // Return FALSE to allow context menu to be shown.
+    virtual bool    handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, bool down);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleMiddleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMiddleMouseUp(S32 x, S32 y, MASK mask);
+
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleScrollWheel(S32 x, S32 y, S32 clicks);
+    virtual bool    handleScrollHWheel(S32 x, S32 y, S32 clicks);
+    virtual bool    handleDoubleClick(S32 x, S32 y, MASK mask);
+    virtual bool    handleRightMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleRightMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleToolTip(S32 x, S32 y, MASK mask);
+
+        // Return false to allow context menu to be shown.
     virtual void    screenPointToLocal(S32 screen_x, S32 screen_y, S32* local_x, S32* local_y) const
                             { *local_x = screen_x; *local_y = screen_y; }
     virtual void    localPointToScreen(S32 local_x, S32 local_y, S32* screen_x, S32* screen_y) const
@@ -74,10 +74,10 @@ public:
     // New virtual functions
     virtual LLViewerObject* getEditingObject()      { return NULL; }
     virtual LLVector3d      getEditingPointGlobal() { return LLVector3d(); }
-    virtual BOOL            isEditing()             { return (getEditingObject() != NULL); }
+    virtual bool            isEditing()             { return (getEditingObject() != NULL); }
     virtual void            stopEditing()           {}
 
-    virtual BOOL            clipMouseWhenDown()     { return TRUE; }
+    virtual bool            clipMouseWhenDown()     { return true; }
 
     virtual void            handleSelect()          { } // do stuff when your tool is selected
     virtual void            handleDeselect()        { } // clean up when your tool is deselected
@@ -86,16 +86,16 @@ public:
 
     // isAlwaysRendered() - return true if this is a tool that should
     // always be rendered regardless of selection.
-    virtual BOOL isAlwaysRendered() { return FALSE; }
+    virtual bool isAlwaysRendered() { return false; }
 
     virtual void            render() {}             // draw tool specific 3D content in world
     virtual void            draw();                 // draw tool specific 2D overlay
 
-    virtual BOOL            handleKey(KEY key, MASK mask);
+    virtual bool            handleKey(KEY key, MASK mask);
 
     // Note: NOT virtual.  Subclasses should call this version.
-    void                    setMouseCapture(BOOL b);
-    BOOL                    hasMouseCapture();
+    void                    setMouseCapture(bool b);
+    bool                    hasMouseCapture();
     virtual void            onMouseCaptureLost() {}  // override this one as needed.
 
 protected:
diff --git a/indra/newview/lltoolbarview.cpp b/indra/newview/lltoolbarview.cpp
index 6b9125b385..5180b1808c 100644
--- a/indra/newview/lltoolbarview.cpp
+++ b/indra/newview/lltoolbarview.cpp
@@ -93,7 +93,7 @@ LLToolBarView::~LLToolBarView()
     saveToolbars();
 }
 
-BOOL LLToolBarView::postBuild()
+bool LLToolBarView::postBuild()
 {
     mToolbars[LLToolBarEnums::TOOLBAR_LEFT] = getChild<LLToolBar>("toolbar_left");
     mToolbars[LLToolBarEnums::TOOLBAR_LEFT]->getCenterLayoutPanel()->setLocationId(LLToolBarEnums::TOOLBAR_LEFT);
@@ -115,7 +115,7 @@ BOOL LLToolBarView::postBuild()
         mToolbars[i]->setButtonRemoveCallback(boost::bind(LLToolBarView::onToolBarButtonRemoved,_1));
     }
 
-    return TRUE;
+    return true;
 }
 
 S32 LLToolBarView::hasCommand(const LLCommandId& commandId) const
@@ -570,7 +570,7 @@ void LLToolBarView::draw()
 
         for (S32 i = LLToolBarEnums::TOOLBAR_FIRST; i <= LLToolBarEnums::TOOLBAR_LAST; i++)
         {
-            gl_rect_2d(toolbar_rects[i], drop_color, TRUE);
+            gl_rect_2d(toolbar_rects[i], drop_color, true);
         }
     }
 
@@ -591,7 +591,7 @@ void LLToolBarView::startDragTool(S32 x, S32 y, LLToolBarButton* toolbarButton)
     LLToolDragAndDrop::getInstance()->setDragStart( x, y );
 }
 
-BOOL LLToolBarView::handleDragTool( S32 x, S32 y, const LLUUID& uuid, LLAssetType::EType type)
+bool LLToolBarView::handleDragTool( S32 x, S32 y, const LLUUID& uuid, LLAssetType::EType type)
 {
     if (LLToolDragAndDrop::getInstance()->isOverThreshold( x, y ))
     {
@@ -613,7 +613,7 @@ BOOL LLToolBarView::handleDragTool( S32 x, S32 y, const LLUUID& uuid, LLAssetTyp
             gToolBarView->stopCommandInProgress(command_id);
 
             gToolBarView->mDragStarted = true;
-            return TRUE;
+            return true;
         }
         else
         {
@@ -621,18 +621,18 @@ BOOL LLToolBarView::handleDragTool( S32 x, S32 y, const LLUUID& uuid, LLAssetTyp
             return LLToolDragAndDrop::getInstance()->handleHover( x, y, mask );
         }
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLToolBarView::handleDropTool( void* cargo_data, S32 x, S32 y, LLToolBar* toolbar)
+bool LLToolBarView::handleDropTool( void* cargo_data, S32 x, S32 y, LLToolBar* toolbar)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     LLInventoryObject* inv_item = static_cast<LLInventoryObject*>(cargo_data);
 
     LLAssetType::EType type = inv_item->getType();
     if (type == LLAssetType::AT_WIDGET)
     {
-        handled = TRUE;
+        handled = true;
         // Get the command from its uuid
         LLCommandManager& mgr = LLCommandManager::instance();
         LLCommandId command_id(inv_item->getUUID());
diff --git a/indra/newview/lltoolbarview.h b/indra/newview/lltoolbarview.h
index 19f72102c1..7cecd81052 100644
--- a/indra/newview/lltoolbarview.h
+++ b/indra/newview/lltoolbarview.h
@@ -67,8 +67,8 @@ public:
 
     // Derived methods
     virtual ~LLToolBarView();
-    virtual BOOL postBuild();
-    virtual void draw();
+    bool postBuild() override;
+    void draw() override;
 
     // Toolbar view interface with the rest of the world
     // Checks if the commandId is being used somewhere in one of the toolbars, returns LLToolBarEnums::EToolBarLocation
@@ -91,8 +91,8 @@ public:
     static bool clearAllToolbars();
 
     static void startDragTool(S32 x, S32 y, LLToolBarButton* toolbarButton);
-    static BOOL handleDragTool(S32 x, S32 y, const LLUUID& uuid, LLAssetType::EType type);
-    static BOOL handleDropTool(void* cargo_data, S32 x, S32 y, LLToolBar* toolbar);
+    static bool handleDragTool(S32 x, S32 y, const LLUUID& uuid, LLAssetType::EType type);
+    static bool handleDropTool(void* cargo_data, S32 x, S32 y, LLToolBar* toolbar);
     static void resetDragTool(LLToolBarButton* toolbarButton);
     LLInventoryObject* getDragItem();
     LLView* getBottomToolbar() { return mBottomToolbarPanel; }
diff --git a/indra/newview/lltoolbrush.cpp b/indra/newview/lltoolbrush.cpp
index 05ec09883d..e2b6924aeb 100644
--- a/indra/newview/lltoolbrush.cpp
+++ b/indra/newview/lltoolbrush.cpp
@@ -88,8 +88,8 @@ LLToolBrushLand::LLToolBrushLand()
     mStartingZ( 0.0f ),
     mMouseX( 0 ),
     mMouseY(0),
-    mGotHover(FALSE),
-    mBrushSelected(FALSE)
+    mGotHover(false),
+    mBrushSelected(false)
 {
     mBrushSize = gSavedSettings.getF32("LandBrushSize");
 }
@@ -122,7 +122,7 @@ void LLToolBrushLand::modifyLandAtPointGlobal(const LLVector3d &pos_global,
         iter != mLastAffectedRegions.end(); ++iter)
     {
         LLViewerRegion* regionp = *iter;
-        //BOOL is_changed = FALSE;
+        //bool is_changed = false;
         LLVector3 pos_region = regionp->getPosRegionFromGlobal(pos_global);
         LLSurface &land = regionp->getLand();
         char action = E_LAND_LEVEL;
@@ -249,7 +249,7 @@ void LLToolBrushLand::modifyLandInSelectionGlobal()
         iter != mLastAffectedRegions.end(); ++iter)
     {
         LLViewerRegion* regionp = *iter;
-        //BOOL is_changed = FALSE;
+        //bool is_changed = false;
         LLVector3 min_region = regionp->getPosRegionFromGlobal(min);
         LLVector3 max_region = regionp->getPosRegionFromGlobal(max);
 
@@ -318,7 +318,7 @@ void LLToolBrushLand::modifyLandInSelectionGlobal()
         msg->addF32Fast(_PREHASH_Seconds, seconds);
         msg->addF32Fast(_PREHASH_Height, mStartingZ);
 
-        BOOL parcel_selected = LLViewerParcelMgr::getInstance()->getParcelSelection()->getWholeParcelSelected();
+        bool parcel_selected = LLViewerParcelMgr::getInstance()->getParcelSelection()->getWholeParcelSelected();
         LLParcel* selected_parcel = LLViewerParcelMgr::getInstance()->getParcelSelection()->getParcel();
 
         if (parcel_selected && selected_parcel)
@@ -356,13 +356,13 @@ void LLToolBrushLand::brush( void )
         spot.mdV[VX] = floor( spot.mdV[VX] + 0.5 );
         spot.mdV[VY] = floor( spot.mdV[VY] + 0.5 );
 
-        modifyLandAtPointGlobal(spot, gKeyboard->currentMask(TRUE));
+        modifyLandAtPointGlobal(spot, gKeyboard->currentMask(true));
     }
 }
 
-BOOL LLToolBrushLand::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolBrushLand::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     // Find the z value of the initial click.
     LLVector3d spot;
@@ -378,7 +378,7 @@ BOOL LLToolBrushLand::handleMouseDown(S32 x, S32 y, MASK mask)
         if (!canTerraformRegion(regionp))
         {
             alertNoTerraformRegion(regionp);
-            return TRUE;
+            return true;
         }
 
         if (!canTerraformParcel(regionp))
@@ -394,23 +394,23 @@ BOOL LLToolBrushLand::handleMouseDown(S32 x, S32 y, MASK mask)
         mMouseX = x;
         mMouseY = y;
         gIdleCallbacks.addFunction( &LLToolBrushLand::onIdle, (void*)this );
-        setMouseCapture( TRUE );
+        setMouseCapture( true );
 
-        LLViewerParcelMgr::getInstance()->setSelectionVisible(FALSE);
-        handled = TRUE;
+        LLViewerParcelMgr::getInstance()->setSelectionVisible(false);
+        handled = true;
     }
 
     return handled;
 }
 
-BOOL LLToolBrushLand::handleHover( S32 x, S32 y, MASK mask )
+bool LLToolBrushLand::handleHover( S32 x, S32 y, MASK mask )
 {
     LL_DEBUGS("UserInput") << "hover handled by LLToolBrushLand ("
                                 << (hasMouseCapture() ? "active":"inactive")
                                 << ")" << LL_ENDL;
     mMouseX = x;
     mMouseY = y;
-    mGotHover = TRUE;
+    mGotHover = true;
     gViewerWindow->setCursor(UI_CURSOR_TOOLLAND);
 
     LLVector3d spot;
@@ -422,22 +422,22 @@ BOOL LLToolBrushLand::handleHover( S32 x, S32 y, MASK mask )
 
         LLViewerParcelMgr::getInstance()->setHoverParcel(spot);
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLToolBrushLand::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolBrushLand::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
     mLastAffectedRegions.clear();
     if( hasMouseCapture() )
     {
         // Release the mouse
-        setMouseCapture( FALSE );
+        setMouseCapture( false );
 
-        LLViewerParcelMgr::getInstance()->setSelectionVisible(TRUE);
+        LLViewerParcelMgr::getInstance()->setSelectionVisible(true);
 
         gIdleCallbacks.deleteFunction( &LLToolBrushLand::onIdle, (void*)this );
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
@@ -450,7 +450,7 @@ void LLToolBrushLand::handleSelect()
     gFloaterTools->setStatusText("modifyland");
 //  if (!mBrushSelected)
     {
-        mBrushSelected = TRUE;
+        mBrushSelected = true;
     }
 }
 
@@ -461,8 +461,8 @@ void LLToolBrushLand::handleDeselect()
     {
         gEditMenuHandler = NULL;
     }
-    LLViewerParcelMgr::getInstance()->setSelectionVisible(TRUE);
-    mBrushSelected = FALSE;
+    LLViewerParcelMgr::getInstance()->setSelectionVisible(true);
+    mBrushSelected = false;
 }
 
 // Draw the area that will be affected.
@@ -493,7 +493,7 @@ void LLToolBrushLand::render()
                               pos_world);
             }
         }
-        mGotHover = FALSE;
+        mGotHover = false;
     }
 }
 
@@ -681,7 +681,7 @@ bool LLToolBrushLand::canTerraformParcel(LLViewerRegion* regionp) const
     bool is_terraform_allowed = false;
     if (selected_parcel)
     {
-        BOOL owner_release = LLViewerParcelMgr::isParcelOwnedByAgent(selected_parcel, GP_LAND_ALLOW_EDIT_LAND);
+        bool owner_release = LLViewerParcelMgr::isParcelOwnedByAgent(selected_parcel, GP_LAND_ALLOW_EDIT_LAND);
         is_terraform_allowed = ( gAgent.canManageEstate() || (selected_parcel->getOwnerID() == regionp->getOwner()) || owner_release);
     }
 
diff --git a/indra/newview/lltoolbrush.h b/indra/newview/lltoolbrush.h
index 4dc70d8a5e..28cad912e5 100644
--- a/indra/newview/lltoolbrush.h
+++ b/indra/newview/lltoolbrush.h
@@ -49,15 +49,15 @@ class LLToolBrushLand : public LLTool, public LLEditMenuHandler, public LLSingle
 public:
 
     // x,y in window coords, 0,0 = left,bot
-    virtual BOOL handleMouseDown( S32 x, S32 y, MASK mask ) override;
-    virtual BOOL handleMouseUp( S32 x, S32 y, MASK mask ) override;
-    virtual BOOL handleHover( S32 x, S32 y, MASK mask ) override;
+    virtual bool handleMouseDown( S32 x, S32 y, MASK mask ) override;
+    virtual bool handleMouseUp( S32 x, S32 y, MASK mask ) override;
+    virtual bool handleHover( S32 x, S32 y, MASK mask ) override;
     virtual void handleSelect() override;
     virtual void handleDeselect() override;
 
     // isAlwaysRendered() - return true if this is a tool that should
     // always be rendered regardless of selection.
-    virtual BOOL isAlwaysRendered()  override { return TRUE; }
+    virtual bool isAlwaysRendered()  override { return true; }
 
     // Draw the area that will be affected.
     virtual void render() override;
@@ -69,7 +69,7 @@ public:
 
     void modifyLandInSelectionGlobal();
     virtual void    undo() override;
-    virtual BOOL    canUndo() const  override { return TRUE; }
+    virtual bool    canUndo() const  override { return true; }
 
 protected:
     void brush( void );
@@ -95,8 +95,8 @@ protected:
     S32 mMouseX;
     S32 mMouseY;
     F32 mBrushSize;
-    BOOL mGotHover;
-    BOOL mBrushSelected;
+    bool mGotHover;
+    bool mBrushSelected;
     // Order doesn't matter and we do check for existance of regions, so use a set
     region_list_t mLastAffectedRegions;
 
diff --git a/indra/newview/lltoolcomp.cpp b/indra/newview/lltoolcomp.cpp
index 1060d79641..c6e59a81c9 100644
--- a/indra/newview/lltoolcomp.cpp
+++ b/indra/newview/lltoolcomp.cpp
@@ -83,15 +83,15 @@ LLToolComposite::LLToolComposite(const std::string& name)
     : LLTool(name),
       mCur(sNullTool),
       mDefault(sNullTool),
-      mSelected(FALSE),
-      mMouseDown(FALSE), mManip(NULL), mSelectRect(NULL)
+      mSelected(false),
+      mMouseDown(false), mManip(NULL), mSelectRect(NULL)
 {
 }
 
 // Returns to the default tool
-BOOL LLToolComposite::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolComposite::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = mCur->handleMouseUp( x, y, mask );
+    bool handled = mCur->handleMouseUp( x, y, mask );
     if( handled )
     {
         setCurrentTool( mDefault );
@@ -105,7 +105,7 @@ void LLToolComposite::onMouseCaptureLost()
     setCurrentTool( mDefault );
 }
 
-BOOL LLToolComposite::isSelecting()
+bool LLToolComposite::isSelecting()
 {
     return mCur == mSelectRect;
 }
@@ -118,14 +118,14 @@ void LLToolComposite::handleSelect()
     }
     mCur = mDefault;
     mCur->handleSelect();
-    mSelected = TRUE;
+    mSelected = true;
 }
 
 void LLToolComposite::handleDeselect()
 {
     mCur->handleDeselect();
     mCur = mDefault;
-    mSelected = FALSE;
+    mSelected = false;
 }
 
 //----------------------------------------------------------------------------
@@ -134,7 +134,7 @@ void LLToolComposite::handleDeselect()
 
 LLToolCompInspect::LLToolCompInspect()
 : LLToolComposite(std::string("Inspect")),
-  mIsToolCameraActive(FALSE)
+  mIsToolCameraActive(false)
 {
     mSelectRect     = new LLToolSelectRect(this);
     mDefault = mSelectRect;
@@ -147,9 +147,9 @@ LLToolCompInspect::~LLToolCompInspect()
     mSelectRect = NULL;
 }
 
-BOOL LLToolCompInspect::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolCompInspect::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (mCur == LLToolCamera::getInstance())
     {
@@ -157,17 +157,17 @@ BOOL LLToolCompInspect::handleMouseDown(S32 x, S32 y, MASK mask)
     }
     else
     {
-        mMouseDown = TRUE;
+        mMouseDown = true;
         gViewerWindow->pickAsync(x, y, mask, pickCallback);
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
 }
 
-BOOL LLToolCompInspect::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolCompInspect::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLToolComposite::handleMouseUp(x, y, mask);
+    bool handled = LLToolComposite::handleMouseUp(x, y, mask);
     mIsToolCameraActive = getCurrentTool() == LLToolCamera::getInstance();
     return handled;
 }
@@ -180,7 +180,7 @@ void LLToolCompInspect::pickCallback(const LLPickInfo& pick_info)
     if (!tool_inspectp->mMouseDown)
     {
         // fast click on object, but mouse is already up...just do select
-        tool_inspectp->mSelectRect->handleObjectSelection(pick_info, gSavedSettings.getBOOL("EditLinkedParts"), FALSE);
+        tool_inspectp->mSelectRect->handleObjectSelection(pick_info, gSavedSettings.getBOOL("EditLinkedParts"), false);
         return;
     }
 
@@ -190,24 +190,24 @@ void LLToolCompInspect::pickCallback(const LLPickInfo& pick_info)
     }
 
     tool_inspectp->setCurrentTool( tool_inspectp->mSelectRect );
-    tool_inspectp->mIsToolCameraActive = FALSE;
+    tool_inspectp->mIsToolCameraActive = false;
     tool_inspectp->mSelectRect->handlePick( pick_info );
 }
 
-BOOL LLToolCompInspect::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLToolCompInspect::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
-    return TRUE;
+    return true;
 }
 
-BOOL LLToolCompInspect::handleKey(KEY key, MASK mask)
+bool LLToolCompInspect::handleKey(KEY key, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if(KEY_ALT == key)
     {
         setCurrentTool(LLToolCamera::getInstance());
-        mIsToolCameraActive = TRUE;
-        handled = TRUE;
+        mIsToolCameraActive = true;
+        handled = true;
     }
     else
     {
@@ -220,7 +220,7 @@ BOOL LLToolCompInspect::handleKey(KEY key, MASK mask)
 void LLToolCompInspect::onMouseCaptureLost()
 {
     LLToolComposite::onMouseCaptureLost();
-    mIsToolCameraActive = FALSE;
+    mIsToolCameraActive = false;
 }
 
 void LLToolCompInspect::keyUp(KEY key, MASK mask)
@@ -228,7 +228,7 @@ void LLToolCompInspect::keyUp(KEY key, MASK mask)
     if (KEY_ALT == key && mCur == LLToolCamera::getInstance())
     {
         setCurrentTool(mDefault);
-        mIsToolCameraActive = FALSE;
+        mIsToolCameraActive = false;
     }
 }
 
@@ -255,7 +255,7 @@ LLToolCompTranslate::~LLToolCompTranslate()
     mSelectRect = NULL;
 }
 
-BOOL LLToolCompTranslate::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolCompTranslate::handleHover(S32 x, S32 y, MASK mask)
 {
     if( !mCur->hasMouseCapture() )
     {
@@ -265,12 +265,12 @@ BOOL LLToolCompTranslate::handleHover(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLToolCompTranslate::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolCompTranslate::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    mMouseDown = TRUE;
-    gViewerWindow->pickAsync(x, y, mask, pickCallback, /*BOOL pick_transparent*/ FALSE, LLFloaterReg::instanceVisible("build"), FALSE,
+    mMouseDown = true;
+    gViewerWindow->pickAsync(x, y, mask, pickCallback, /*bool pick_transparent*/ false, LLFloaterReg::instanceVisible("build"), false,
         gSavedSettings.getBOOL("SelectReflectionProbes"));;
-    return TRUE;
+    return true;
 }
 
 void LLToolCompTranslate::pickCallback(const LLPickInfo& pick_info)
@@ -281,7 +281,7 @@ void LLToolCompTranslate::pickCallback(const LLPickInfo& pick_info)
     if (!LLToolCompTranslate::getInstance()->mMouseDown)
     {
         // fast click on object, but mouse is already up...just do select
-        LLToolCompTranslate::getInstance()->mSelectRect->handleObjectSelection(pick_info, gSavedSettings.getBOOL("EditLinkedParts"), FALSE);
+        LLToolCompTranslate::getInstance()->mSelectRect->handleObjectSelection(pick_info, gSavedSettings.getBOOL("EditLinkedParts"), false);
         return;
     }
 
@@ -292,7 +292,7 @@ void LLToolCompTranslate::pickCallback(const LLPickInfo& pick_info)
             LLEditMenuHandler::gEditMenuHandler = LLSelectMgr::getInstance();
         }
 
-        BOOL can_move = LLToolCompTranslate::getInstance()->mManip->canAffectSelection();
+        bool can_move = LLToolCompTranslate::getInstance()->mManip->canAffectSelection();
 
         if( LLManip::LL_NO_PART != LLToolCompTranslate::getInstance()->mManip->getHighlightedPart() && can_move)
         {
@@ -315,9 +315,9 @@ void LLToolCompTranslate::pickCallback(const LLPickInfo& pick_info)
     }
 }
 
-BOOL LLToolCompTranslate::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolCompTranslate::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    mMouseDown = FALSE;
+    mMouseDown = false;
     return LLToolComposite::handleMouseUp(x, y, mask);
 }
 
@@ -334,14 +334,14 @@ LLTool* LLToolCompTranslate::getOverrideTool(MASK mask)
     return LLToolComposite::getOverrideTool(mask);
 }
 
-BOOL LLToolCompTranslate::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLToolCompTranslate::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if (mManip->getSelection()->isEmpty() && mManip->getHighlightedPart() == LLManip::LL_NO_PART)
     {
         // You should already have an object selected from the mousedown.
         // If so, show its properties
         LLFloaterReg::showInstance("build", "Content");
-        return TRUE;
+        return true;
     }
     // Nothing selected means the first mouse click was probably
     // bad, so try again.
@@ -382,7 +382,7 @@ LLToolCompScale::~LLToolCompScale()
     delete mSelectRect;
 }
 
-BOOL LLToolCompScale::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolCompScale::handleHover(S32 x, S32 y, MASK mask)
 {
     if( !mCur->hasMouseCapture() )
     {
@@ -392,11 +392,11 @@ BOOL LLToolCompScale::handleHover(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLToolCompScale::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolCompScale::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    mMouseDown = TRUE;
+    mMouseDown = true;
     gViewerWindow->pickAsync(x, y, mask, pickCallback);
-    return TRUE;
+    return true;
 }
 
 void LLToolCompScale::pickCallback(const LLPickInfo& pick_info)
@@ -407,7 +407,7 @@ void LLToolCompScale::pickCallback(const LLPickInfo& pick_info)
     if (!LLToolCompScale::getInstance()->mMouseDown)
     {
         // fast click on object, but mouse is already up...just do select
-        LLToolCompScale::getInstance()->mSelectRect->handleObjectSelection(pick_info, gSavedSettings.getBOOL("EditLinkedParts"), FALSE);
+        LLToolCompScale::getInstance()->mSelectRect->handleObjectSelection(pick_info, gSavedSettings.getBOOL("EditLinkedParts"), false);
 
         return;
     }
@@ -436,9 +436,9 @@ void LLToolCompScale::pickCallback(const LLPickInfo& pick_info)
     }
 }
 
-BOOL LLToolCompScale::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolCompScale::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    mMouseDown = FALSE;
+    mMouseDown = false;
     return LLToolComposite::handleMouseUp(x, y, mask);
 }
 
@@ -453,14 +453,14 @@ LLTool* LLToolCompScale::getOverrideTool(MASK mask)
 }
 
 
-BOOL LLToolCompScale::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLToolCompScale::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if (!mManip->getSelection()->isEmpty() && mManip->getHighlightedPart() == LLManip::LL_NO_PART)
     {
         // You should already have an object selected from the mousedown.
         // If so, show its properties
         LLFloaterReg::showInstance("build", "Content");
-        return TRUE;
+        return true;
     }
     else
     {
@@ -493,7 +493,7 @@ LLToolCompCreate::LLToolCompCreate()
 
     mCur = mPlacer;
     mDefault = mPlacer;
-    mObjectPlacedOnMouseDown = FALSE;
+    mObjectPlacedOnMouseDown = false;
 }
 
 
@@ -504,15 +504,15 @@ LLToolCompCreate::~LLToolCompCreate()
 }
 
 
-BOOL LLToolCompCreate::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolCompCreate::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
-    mMouseDown = TRUE;
+    bool handled = false;
+    mMouseDown = true;
 
     if ( (mask == MASK_SHIFT) || (mask == MASK_CONTROL) )
     {
         gViewerWindow->pickAsync(x, y, mask, pickCallback);
-        handled = TRUE;
+        handled = true;
     }
     else
     {
@@ -520,7 +520,7 @@ BOOL LLToolCompCreate::handleMouseDown(S32 x, S32 y, MASK mask)
         handled = mPlacer->placeObject( x, y, mask );
     }
 
-    mObjectPlacedOnMouseDown = TRUE;
+    mObjectPlacedOnMouseDown = true;
 
     return handled;
 }
@@ -536,14 +536,14 @@ void LLToolCompCreate::pickCallback(const LLPickInfo& pick_info)
     LLToolCompCreate::getInstance()->mSelectRect->handlePick( pick_info );
 }
 
-BOOL LLToolCompCreate::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLToolCompCreate::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     return handleMouseDown(x, y, mask);
 }
 
-BOOL LLToolCompCreate::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolCompCreate::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if ( mMouseDown && !mObjectPlacedOnMouseDown && !(mask == MASK_SHIFT) && !(mask == MASK_CONTROL) )
     {
@@ -551,8 +551,8 @@ BOOL LLToolCompCreate::handleMouseUp(S32 x, S32 y, MASK mask)
         handled = mPlacer->placeObject( x, y, mask );
     }
 
-    mObjectPlacedOnMouseDown = FALSE;
-    mMouseDown = FALSE;
+    mObjectPlacedOnMouseDown = false;
+    mMouseDown = false;
 
     if (!handled)
     {
@@ -582,7 +582,7 @@ LLToolCompRotate::~LLToolCompRotate()
     delete mSelectRect;
 }
 
-BOOL LLToolCompRotate::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolCompRotate::handleHover(S32 x, S32 y, MASK mask)
 {
     if( !mCur->hasMouseCapture() )
     {
@@ -592,11 +592,11 @@ BOOL LLToolCompRotate::handleHover(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLToolCompRotate::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolCompRotate::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    mMouseDown = TRUE;
+    mMouseDown = true;
     gViewerWindow->pickAsync(x, y, mask, pickCallback);
-    return TRUE;
+    return true;
 }
 
 void LLToolCompRotate::pickCallback(const LLPickInfo& pick_info)
@@ -607,7 +607,7 @@ void LLToolCompRotate::pickCallback(const LLPickInfo& pick_info)
     if (!LLToolCompRotate::getInstance()->mMouseDown)
     {
         // fast click on object, but mouse is already up...just do select
-        LLToolCompRotate::getInstance()->mSelectRect->handleObjectSelection(pick_info, gSavedSettings.getBOOL("EditLinkedParts"), FALSE);
+        LLToolCompRotate::getInstance()->mSelectRect->handleObjectSelection(pick_info, gSavedSettings.getBOOL("EditLinkedParts"), false);
         return;
     }
 
@@ -635,9 +635,9 @@ void LLToolCompRotate::pickCallback(const LLPickInfo& pick_info)
     }
 }
 
-BOOL LLToolCompRotate::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolCompRotate::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    mMouseDown = FALSE;
+    mMouseDown = false;
     return LLToolComposite::handleMouseUp(x, y, mask);
 }
 
@@ -650,14 +650,14 @@ LLTool* LLToolCompRotate::getOverrideTool(MASK mask)
     return LLToolComposite::getOverrideTool(mask);
 }
 
-BOOL LLToolCompRotate::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLToolCompRotate::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if (!mManip->getSelection()->isEmpty() && mManip->getHighlightedPart() == LLManip::LL_NO_PART)
     {
         // You should already have an object selected from the mousedown.
         // If so, show its properties
         LLFloaterReg::showInstance("build", "Content");
-        return TRUE;
+        return true;
     }
     else
     {
@@ -708,7 +708,7 @@ LLToolCompGun::~LLToolCompGun()
     mNull = NULL;
 }
 
-BOOL LLToolCompGun::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolCompGun::handleHover(S32 x, S32 y, MASK mask)
 {
     // *NOTE: This hack is here to make mouselook kick in again after
     // item selected from context menu.
@@ -736,21 +736,21 @@ BOOL LLToolCompGun::handleHover(S32 x, S32 y, MASK mask)
         else if ( mCur == mGrab && !(mask & MASK_ALT) )
         {
             setCurrentTool( (LLTool*) mGun );
-            setMouseCapture(TRUE);
+            setMouseCapture(true);
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLToolCompGun::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolCompGun::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // if the left button is grabbed, don't put up the pie menu
     if (gAgent.leftButtonGrabbed() && gViewerInput.isLMouseHandlingDefault(MODE_FIRST_PERSON))
     {
         gAgent.setControlFlags(AGENT_CONTROL_ML_LBUTTON_DOWN);
-        return FALSE;
+        return false;
     }
 
     // On mousedown, start grabbing
@@ -761,13 +761,13 @@ BOOL LLToolCompGun::handleMouseDown(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLToolCompGun::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLToolCompGun::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     // if the left button is grabbed, don't put up the pie menu
     if (gAgent.leftButtonGrabbed() && gViewerInput.isLMouseHandlingDefault(MODE_FIRST_PERSON))
     {
         gAgent.setControlFlags(AGENT_CONTROL_ML_LBUTTON_DOWN);
-        return FALSE;
+        return false;
     }
 
     // On mousedown, start grabbing
@@ -778,7 +778,7 @@ BOOL LLToolCompGun::handleDoubleClick(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLToolCompGun::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolCompGun::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
     /* JC - suppress context menu 8/29/2002
 
@@ -786,24 +786,24 @@ BOOL LLToolCompGun::handleRightMouseDown(S32 x, S32 y, MASK mask)
     // make the build menu appear.
     setCurrentTool( (LLTool*) mNull );
 
-    // This should return FALSE, meaning the context menu will
+    // This should return false, meaning the context menu will
     // be shown.
-    return FALSE;
+    return false;
     */
 
     // Returning true will suppress the context menu
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLToolCompGun::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolCompGun::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if (gViewerInput.isLMouseHandlingDefault(MODE_FIRST_PERSON))
     {
         gAgent.setControlFlags(AGENT_CONTROL_ML_LBUTTON_UP);
     }
     setCurrentTool( (LLTool*) mGun );
-    return TRUE;
+    return true;
 }
 
 void LLToolCompGun::onMouseCaptureLost()
@@ -819,22 +819,22 @@ void LLToolCompGun::onMouseCaptureLost()
 void    LLToolCompGun::handleSelect()
 {
     LLToolComposite::handleSelect();
-    setMouseCapture(TRUE);
+    setMouseCapture(true);
 }
 
 void    LLToolCompGun::handleDeselect()
 {
     LLToolComposite::handleDeselect();
-    setMouseCapture(FALSE);
+    setMouseCapture(false);
 }
 
 
-BOOL LLToolCompGun::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLToolCompGun::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     if (clicks > 0)
     {
         gAgentCamera.changeCameraToDefault();
 
     }
-    return TRUE;
+    return true;
 }
diff --git a/indra/newview/lltoolcomp.h b/indra/newview/lltoolcomp.h
index 2ed8d73f41..4b945967d1 100644
--- a/indra/newview/lltoolcomp.h
+++ b/indra/newview/lltoolcomp.h
@@ -45,21 +45,21 @@ class LLToolComposite : public LLTool
 public:
     LLToolComposite(const std::string& name);
 
-    virtual BOOL            handleMouseDown(S32 x, S32 y, MASK mask) = 0;   // Sets the current tool
-    virtual BOOL            handleMouseUp(S32 x, S32 y, MASK mask);         // Returns to the default tool
-    virtual BOOL            handleDoubleClick(S32 x, S32 y, MASK mask) = 0;
+    virtual bool            handleMouseDown(S32 x, S32 y, MASK mask) = 0;   // Sets the current tool
+    virtual bool            handleMouseUp(S32 x, S32 y, MASK mask);         // Returns to the default tool
+    virtual bool            handleDoubleClick(S32 x, S32 y, MASK mask) = 0;
 
     // Map virtual functions to the currently active internal tool
-    virtual BOOL            handleHover(S32 x, S32 y, MASK mask)            { return mCur->handleHover( x, y, mask ); }
-    virtual BOOL            handleScrollWheel(S32 x, S32 y, S32 clicks)     { return mCur->handleScrollWheel( x, y, clicks ); }
-    virtual BOOL            handleRightMouseDown(S32 x, S32 y, MASK mask)   { return mCur->handleRightMouseDown( x, y, mask ); }
+    virtual bool            handleHover(S32 x, S32 y, MASK mask)            { return mCur->handleHover( x, y, mask ); }
+    virtual bool            handleScrollWheel(S32 x, S32 y, S32 clicks)     { return mCur->handleScrollWheel( x, y, clicks ); }
+    virtual bool            handleRightMouseDown(S32 x, S32 y, MASK mask)   { return mCur->handleRightMouseDown( x, y, mask ); }
 
     virtual LLViewerObject* getEditingObject()                              { return mCur->getEditingObject(); }
     virtual LLVector3d      getEditingPointGlobal()                         { return mCur->getEditingPointGlobal(); }
-    virtual BOOL            isEditing()                                     { return mCur->isEditing(); }
+    virtual bool            isEditing()                                     { return mCur->isEditing(); }
     virtual void            stopEditing()                                   { mCur->stopEditing(); mCur = mDefault; }
 
-    virtual BOOL            clipMouseWhenDown()                             { return mCur->clipMouseWhenDown(); }
+    virtual bool            clipMouseWhenDown()                             { return mCur->clipMouseWhenDown(); }
 
     virtual void            handleSelect();
     virtual void            handleDeselect();
@@ -67,7 +67,7 @@ public:
     virtual void            render()                                        { mCur->render(); }
     virtual void            draw()                                          { mCur->draw(); }
 
-    virtual BOOL            handleKey(KEY key, MASK mask)                   { return mCur->handleKey( key, mask ); }
+    virtual bool            handleKey(KEY key, MASK mask)                   { return mCur->handleKey( key, mask ); }
 
     virtual void            onMouseCaptureLost();
 
@@ -77,7 +77,7 @@ public:
     virtual void            localPointToScreen(S32 local_x, S32 local_y, S32* screen_x, S32* screen_y) const
                                 { mCur->localPointToScreen(local_x, local_y, screen_x, screen_y); }
 
-    BOOL                    isSelecting();
+    bool                    isSelecting();
     LLTool*                 getCurrentTool()                                { return mCur; }
 
 protected:
@@ -88,8 +88,8 @@ protected:
 protected:
     LLTool*                 mCur;       // The tool to which we're delegating.
     LLTool*                 mDefault;
-    BOOL                    mSelected;
-    BOOL                    mMouseDown;
+    bool                    mSelected;
+    bool                    mMouseDown;
     LLManip*                mManip;
     LLToolSelectRect*       mSelectRect;
 
@@ -108,19 +108,19 @@ class LLToolCompInspect : public LLToolComposite, public LLSingleton<LLToolCompI
 public:
 
     // Overridden from LLToolComposite
-    virtual BOOL        handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleMouseUp(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleDoubleClick(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleKey(KEY key, MASK mask) override;
+    virtual bool        handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleMouseUp(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleKey(KEY key, MASK mask) override;
     virtual void        onMouseCaptureLost() override;
             void        keyUp(KEY key, MASK mask);
 
     static void pickCallback(const LLPickInfo& pick_info);
 
-    BOOL isToolCameraActive() const { return mIsToolCameraActive; }
+    bool isToolCameraActive() const { return mIsToolCameraActive; }
 
 private:
-    BOOL mIsToolCameraActive;
+    bool mIsToolCameraActive;
 };
 
 //-----------------------------------------------------------------------
@@ -133,10 +133,10 @@ class LLToolCompTranslate : public LLToolComposite, public LLSingleton<LLToolCom
 public:
 
     // Overridden from LLToolComposite
-    virtual BOOL        handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleDoubleClick(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleHover(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleMouseUp(S32 x, S32 y, MASK mask) override;            // Returns to the default tool
+    virtual bool        handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleHover(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleMouseUp(S32 x, S32 y, MASK mask) override;            // Returns to the default tool
     virtual void        render() override;
 
     virtual LLTool*     getOverrideTool(MASK mask) override;
@@ -154,10 +154,10 @@ class LLToolCompScale : public LLToolComposite, public LLSingleton<LLToolCompSca
 public:
 
     // Overridden from LLToolComposite
-    virtual BOOL        handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleDoubleClick(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleHover(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleMouseUp(S32 x, S32 y, MASK mask) override;            // Returns to the default tool
+    virtual bool        handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleHover(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleMouseUp(S32 x, S32 y, MASK mask) override;            // Returns to the default tool
     virtual void        render() override;
 
     virtual LLTool*     getOverrideTool(MASK mask) override;
@@ -176,10 +176,10 @@ class LLToolCompRotate : public LLToolComposite, public LLSingleton<LLToolCompRo
 public:
 
     // Overridden from LLToolComposite
-    virtual BOOL        handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleDoubleClick(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleHover(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleMouseUp(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleHover(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleMouseUp(S32 x, S32 y, MASK mask) override;
     virtual void        render() override;
 
     virtual LLTool*     getOverrideTool(MASK mask) override;
@@ -199,14 +199,14 @@ class LLToolCompCreate : public LLToolComposite, public LLSingleton<LLToolCompCr
 public:
 
     // Overridden from LLToolComposite
-    virtual BOOL        handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleDoubleClick(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleMouseUp(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleMouseUp(S32 x, S32 y, MASK mask) override;
 
     static void pickCallback(const LLPickInfo& pick_info);
 protected:
     LLToolPlacer*       mPlacer;
-    BOOL                mObjectPlacedOnMouseDown;
+    bool                mObjectPlacedOnMouseDown;
 };
 
 
@@ -224,12 +224,12 @@ class LLToolCompGun : public LLToolComposite, public LLSingleton<LLToolCompGun>
 public:
 
     // Overridden from LLToolComposite
-    virtual BOOL            handleHover(S32 x, S32 y, MASK mask) override;
-    virtual BOOL            handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL            handleDoubleClick(S32 x, S32 y, MASK mask) override;
-    virtual BOOL            handleRightMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL            handleMouseUp(S32 x, S32 y, MASK mask) override;
-    virtual BOOL            handleScrollWheel(S32 x, S32 y, S32 clicks) override;
+    virtual bool            handleHover(S32 x, S32 y, MASK mask) override;
+    virtual bool            handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool            handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    virtual bool            handleRightMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool            handleMouseUp(S32 x, S32 y, MASK mask) override;
+    virtual bool            handleScrollWheel(S32 x, S32 y, S32 clicks) override;
     virtual void            onMouseCaptureLost() override;
     virtual void            handleSelect() override;
     virtual void            handleDeselect() override;
diff --git a/indra/newview/lltooldraganddrop.cpp b/indra/newview/lltooldraganddrop.cpp
index abf9748db3..6d0704a469 100644
--- a/indra/newview/lltooldraganddrop.cpp
+++ b/indra/newview/lltooldraganddrop.cpp
@@ -47,6 +47,7 @@
 #include "llinventorybridge.h"
 #include "llinventorydefines.h"
 #include "llinventoryfunctions.h"
+#include "llinventorymodelbackgroundfetch.h"
 #include "llpreviewnotecard.h"
 #include "llrootview.h"
 #include "llselectmgr.h"
@@ -102,7 +103,7 @@ public:
 class LLDroppableItem : public LLInventoryCollectFunctor
 {
 public:
-    LLDroppableItem(BOOL is_transfer) :
+    LLDroppableItem(bool is_transfer) :
         mCountLosing(0), mIsTransfer(is_transfer) {}
     virtual ~LLDroppableItem() {}
     virtual bool operator()(LLInventoryCategory* cat,
@@ -111,7 +112,7 @@ public:
 
 protected:
     S32 mCountLosing;
-    BOOL mIsTransfer;
+    bool mIsTransfer;
 };
 
 bool LLDroppableItem::operator()(LLInventoryCategory* cat,
@@ -287,7 +288,7 @@ LLToolDragAndDrop::LLToolDragAndDrop()
     mSource(SOURCE_AGENT),
     mCursor(UI_CURSOR_NO),
     mLastAccept(ACCEPT_NO),
-    mDrop(FALSE),
+    mDrop(false),
     mCurItemIndex(0)
 {
 
@@ -299,7 +300,7 @@ void LLToolDragAndDrop::setDragStart(S32 x, S32 y)
     mDragStartY = y;
 }
 
-BOOL LLToolDragAndDrop::isOverThreshold(S32 x,S32 y)
+bool LLToolDragAndDrop::isOverThreshold(S32 x,S32 y)
 {
     S32 mouse_delta_x = x - mDragStartX;
     S32 mouse_delta_y = y - mDragStartY;
@@ -318,6 +319,16 @@ void LLToolDragAndDrop::beginDrag(EDragAndDropType type,
         LL_WARNS() << "Attempted to start drag without a cargo type" << LL_ENDL;
         return;
     }
+
+    if (type != DAD_CATEGORY)
+    {
+        LLViewerInventoryItem* item = gInventory.getItem(cargo_id);
+        if (item && !item->isFinished())
+        {
+            LLInventoryModelBackgroundFetch::instance().start(item->getUUID(), false);
+        }
+    }
+
     mCargoTypes.clear();
     mCargoTypes.push_back(type);
     mCargoIDs.clear();
@@ -326,7 +337,7 @@ void LLToolDragAndDrop::beginDrag(EDragAndDropType type,
     mSourceID = source_id;
     mObjectID = object_id;
 
-    setMouseCapture( TRUE );
+    setMouseCapture( true );
     LLToolMgr::getInstance()->setTransientTool( this );
     mCursor = UI_CURSOR_NO;
     if ((mCargoTypes[0] == DAD_CATEGORY)
@@ -352,16 +363,13 @@ void LLToolDragAndDrop::beginDrag(EDragAndDropType type,
                 items,
                 LLInventoryModel::EXCLUDE_TRASH,
                 is_not_preferred);
-            S32 count = cats.size();
-            S32 i;
-            for(i = 0; i < count; ++i)
+            for (auto& cat : cats)
             {
-                folder_ids.push_back(cats.at(i)->getUUID());
+                folder_ids.emplace_back(cat->getUUID());
             }
-            count = items.size();
-            for(i = 0; i < count; ++i)
+            for (auto& item : items)
             {
-                item_ids.push_back(items.at(i)->getUUID());
+                item_ids.emplace_back(item->getUUID());
             }
             if (!folder_ids.empty() || !item_ids.empty())
             {
@@ -396,16 +404,16 @@ void LLToolDragAndDrop::beginMultiDrag(
     mSource = source;
     mSourceID = source_id;
 
-    setMouseCapture( TRUE );
+    setMouseCapture( true );
     LLToolMgr::getInstance()->setTransientTool( this );
     mCursor = UI_CURSOR_NO;
     if ((mSource == SOURCE_AGENT) || (mSource == SOURCE_LIBRARY))
     {
         // find categories (i.e. inventory folders) in the cargo.
         LLInventoryCategory* cat = NULL;
-        S32 count = llmin(cargo_ids.size(), types.size());
-        std::set<LLUUID> cat_ids;
-        for(S32 i = 0; i < count; ++i)
+        auto count = llmin(cargo_ids.size(), types.size());
+        uuid_set_t cat_ids;
+        for (size_t i = 0; i < count; ++i)
         {
             cat = gInventory.getCategory(cargo_ids[i]);
             if (cat)
@@ -423,10 +431,9 @@ void LLToolDragAndDrop::beginMultiDrag(
                     items,
                     LLInventoryModel::EXCLUDE_TRASH,
                     is_not_preferred);
-                S32 cat_count = cats.size();
-                for(S32 i = 0; i < cat_count; ++i)
+                for (auto& cat : cats)
                 {
-                    cat_ids.insert(cat->getUUID());
+                    cat_ids.emplace(cat->getUUID());
                 }
             }
         }
@@ -445,7 +452,7 @@ void LLToolDragAndDrop::endDrag()
 {
     mEndDragSignal();
     LLSelectMgr::getInstance()->unhighlightAll();
-    setMouseCapture(FALSE);
+    setMouseCapture(false);
 }
 
 void LLToolDragAndDrop::onMouseCaptureLost()
@@ -460,15 +467,15 @@ void LLToolDragAndDrop::onMouseCaptureLost()
     mCustomMsg.clear();
 }
 
-BOOL LLToolDragAndDrop::handleMouseUp( S32 x, S32 y, MASK mask )
+bool LLToolDragAndDrop::handleMouseUp( S32 x, S32 y, MASK mask )
 {
     if (hasMouseCapture())
     {
         EAcceptance acceptance = ACCEPT_NO;
-        dragOrDrop( x, y, mask, TRUE, &acceptance );
+        dragOrDrop( x, y, mask, true, &acceptance );
         endDrag();
     }
-    return TRUE;
+    return true;
 }
 
 ECursorType LLToolDragAndDrop::acceptanceToCursor( EAcceptance acceptance )
@@ -535,48 +542,47 @@ ECursorType LLToolDragAndDrop::acceptanceToCursor( EAcceptance acceptance )
     case ACCEPT_POSTPONED:
         break;
     default:
-        llassert( FALSE );
+        llassert( false );
     }
 
     return mCursor;
 }
 
-BOOL LLToolDragAndDrop::handleHover( S32 x, S32 y, MASK mask )
+bool LLToolDragAndDrop::handleHover( S32 x, S32 y, MASK mask )
 {
     EAcceptance acceptance = ACCEPT_NO;
-    dragOrDrop( x, y, mask, FALSE, &acceptance );
+    dragOrDrop( x, y, mask, false, &acceptance );
 
     ECursorType cursor = acceptanceToCursor(acceptance);
     gViewerWindow->getWindow()->setCursor( cursor );
 
     LL_DEBUGS("UserInput") << "hover handled by LLToolDragAndDrop" << LL_ENDL;
-    return TRUE;
+    return true;
 }
 
-BOOL LLToolDragAndDrop::handleKey(KEY key, MASK mask)
+bool LLToolDragAndDrop::handleKey(KEY key, MASK mask)
 {
     if (key == KEY_ESCAPE)
     {
         // cancel drag and drop operation
         endDrag();
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLToolDragAndDrop::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLToolDragAndDrop::handleToolTip(S32 x, S32 y, MASK mask)
 {
-    const F32 DRAG_N_DROP_TOOLTIP_DELAY = 0.10000000149f;
     if (!mToolTipMsg.empty())
     {
         LLToolTipMgr::instance().unblockToolTips();
         LLToolTipMgr::instance().show(LLToolTip::Params()
             .message(mToolTipMsg)
-            .delay_time(DRAG_N_DROP_TOOLTIP_DELAY));
-        return TRUE;
+            .delay_time(gSavedSettings.getF32( "DragAndDropToolTipDelay" )));
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 void LLToolDragAndDrop::handleDeselect()
@@ -588,12 +594,12 @@ void LLToolDragAndDrop::handleDeselect()
 }
 
 // protected
-void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
+void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, bool drop,
                                    EAcceptance* acceptance)
 {
     *acceptance = ACCEPT_YES_MULTI;
 
-    BOOL handled = FALSE;
+    bool handled = false;
 
     LLView* top_view = gFocusMgr.getTopCtrl();
     LLViewerInventoryItem* item;
@@ -613,7 +619,7 @@ void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
 
     if (top_view)
     {
-        handled = TRUE;
+        handled = true;
 
         for (mCurItemIndex = 0; mCurItemIndex < (S32)mCargoIDs.size(); mCurItemIndex++)
         {
@@ -624,7 +630,7 @@ void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
             LLInventoryObject* cargo = locateInventory(item, cat);
             if (cargo)
             {
-                handled = handled && top_view->handleDragAndDrop(local_x, local_y, mask, FALSE,
+                handled = handled && top_view->handleDragAndDrop(local_x, local_y, mask, false,
                                                     mCargoTypes[mCurItemIndex],
                                                     (void*)cargo,
                                                     &item_acceptance,
@@ -632,7 +638,7 @@ void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
             }
             else if (is_uuid_dragged)
             {
-                handled = handled && top_view->handleDragAndDrop(local_x, local_y, mask, FALSE,
+                handled = handled && top_view->handleDragAndDrop(local_x, local_y, mask, false,
                                                     mCargoTypes[mCurItemIndex],
                                                     (void*)&mCargoIDs[mCurItemIndex],
                                                     &item_acceptance,
@@ -665,7 +671,7 @@ void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
                 LLInventoryObject* cargo = locateInventory(item, cat);
                 if (cargo)
                 {
-                    handled = handled && top_view->handleDragAndDrop(local_x, local_y, mask, TRUE,
+                    handled = handled && top_view->handleDragAndDrop(local_x, local_y, mask, true,
                                                         mCargoTypes[mCurItemIndex],
                                                         (void*)cargo,
                                                         &item_acceptance,
@@ -673,7 +679,7 @@ void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
                 }
                 else if (is_uuid_dragged)
                 {
-                    handled = handled && top_view->handleDragAndDrop(local_x, local_y, mask, FALSE,
+                    handled = handled && top_view->handleDragAndDrop(local_x, local_y, mask, false,
                                                         mCargoTypes[mCurItemIndex],
                                                         (void*)&mCargoIDs[mCurItemIndex],
                                                         &item_acceptance,
@@ -689,7 +695,7 @@ void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
 
     if (!handled)
     {
-        handled = TRUE;
+        handled = true;
 
         LLRootView* root_view = gViewerWindow->getRootView();
 
@@ -702,7 +708,7 @@ void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
             // fix for EXT-3191
             if (cargo)
             {
-                handled = handled && root_view->handleDragAndDrop(x, y, mask, FALSE,
+                handled = handled && root_view->handleDragAndDrop(x, y, mask, false,
                                                     mCargoTypes[mCurItemIndex],
                                                     (void*)cargo,
                                                     &item_acceptance,
@@ -710,7 +716,7 @@ void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
             }
             else if (is_uuid_dragged)
             {
-                handled = handled && root_view->handleDragAndDrop(x, y, mask, FALSE,
+                handled = handled && root_view->handleDragAndDrop(x, y, mask, false,
                                                     mCargoTypes[mCurItemIndex],
                                                     (void*)&mCargoIDs[mCurItemIndex],
                                                     &item_acceptance,
@@ -740,7 +746,7 @@ void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
                 LLInventoryObject* cargo = locateInventory(item, cat);
                 if (cargo)
                 {
-                    handled = handled && root_view->handleDragAndDrop(x, y, mask, TRUE,
+                    handled = handled && root_view->handleDragAndDrop(x, y, mask, true,
                                               mCargoTypes[mCurItemIndex],
                                               (void*)cargo,
                                               &item_acceptance,
@@ -748,7 +754,7 @@ void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
                 }
                 else if (is_uuid_dragged)
                 {
-                    handled = handled && root_view->handleDragAndDrop(x, y, mask, TRUE,
+                    handled = handled && root_view->handleDragAndDrop(x, y, mask, true,
                                               mCargoTypes[mCurItemIndex],
                                               (void*)&mCargoIDs[mCurItemIndex],
                                               &item_acceptance,
@@ -784,18 +790,18 @@ void LLToolDragAndDrop::dragOrDrop( S32 x, S32 y, MASK mask, BOOL drop,
     }
 }
 
-void LLToolDragAndDrop::dragOrDrop3D( S32 x, S32 y, MASK mask, BOOL drop, EAcceptance* acceptance )
+void LLToolDragAndDrop::dragOrDrop3D( S32 x, S32 y, MASK mask, bool drop, EAcceptance* acceptance )
 {
     mDrop = drop;
     if (mDrop)
     {
         // don't allow drag and drop onto rigged or transparent objects
-        pick(gViewerWindow->pickImmediate(x, y, FALSE, FALSE));
+        pick(gViewerWindow->pickImmediate(x, y, false, false));
     }
     else
     {
         // don't allow drag and drop onto transparent objects
-        gViewerWindow->pickAsync(x, y, mask, pickCallback, FALSE, FALSE);
+        gViewerWindow->pickAsync(x, y, mask, pickCallback, false, false);
     }
 
     *acceptance = mLastAccept;
@@ -878,7 +884,7 @@ void LLToolDragAndDrop::pick(const LLPickInfo& pick_info)
             (U32)mLastAccept,
             (U32)callMemberFunction(*this,
                                     LLDragAndDropDictionary::instance().get(dad_type, target))
-                (hit_obj, hit_face, pick_info.mKeyMask, FALSE));
+                (hit_obj, hit_face, pick_info.mKeyMask, false));
     }
 
     if (mDrop && ((U32)mLastAccept >= ACCEPT_YES_COPY_SINGLE))
@@ -893,7 +899,7 @@ void LLToolDragAndDrop::pick(const LLPickInfo& pick_info)
                 const EDragAndDropType dad_type = mCargoTypes[item_index];
                 // Call the right implementation function
                 callMemberFunction(*this, LLDragAndDropDictionary::instance().get(dad_type, target))
-                    (hit_obj, hit_face, pick_info.mKeyMask, TRUE);
+                    (hit_obj, hit_face, pick_info.mKeyMask, true);
             }
         }
         else
@@ -924,12 +930,12 @@ void LLToolDragAndDrop::pick(const LLPickInfo& pick_info)
 }
 
 // static
-BOOL LLToolDragAndDrop::handleDropMaterialProtections(LLViewerObject* hit_obj,
+bool LLToolDragAndDrop::handleDropMaterialProtections(LLViewerObject* hit_obj,
                                                      LLInventoryItem* item,
                                                      LLToolDragAndDrop::ESource source,
                                                      const LLUUID& src_id)
 {
-    if (!item) return FALSE;
+    if (!item) return false;
 
     // Always succeed if....
     // material is from the library
@@ -937,7 +943,7 @@ BOOL LLToolDragAndDrop::handleDropMaterialProtections(LLViewerObject* hit_obj,
     if (SOURCE_LIBRARY == source)
     {
         // dropping a material from the library always just works.
-        return TRUE;
+        return true;
     }
 
     // In case the inventory has not been loaded (e.g. due to some recent operation
@@ -958,7 +964,7 @@ BOOL LLToolDragAndDrop::handleDropMaterialProtections(LLViewerObject* hit_obj,
             args["ERROR_MESSAGE"] = "Unable to add texture.\nPlease wait a few seconds and try again.";
         }
         LLNotificationsUtil::add("ErrorMessage", args);
-        return FALSE;
+        return false;
     }
     // Make sure to verify both id and type since 'null'
     // is a shared default for some asset types.
@@ -968,7 +974,7 @@ BOOL LLToolDragAndDrop::handleDropMaterialProtections(LLViewerObject* hit_obj,
         // then it can always be added to a side.
         // This saves some work if the task's inventory is already loaded
         // and ensures that the asset item is only added once.
-        return TRUE;
+        return true;
     }
 
     LLPointer<LLViewerInventoryItem> new_item = new LLViewerInventoryItem(item);
@@ -977,7 +983,7 @@ BOOL LLToolDragAndDrop::handleDropMaterialProtections(LLViewerObject* hit_obj,
         // Check that we can add the material as inventory to the object
         if (willObjectAcceptInventory(hit_obj,item) < ACCEPT_YES_COPY_SINGLE )
         {
-            return FALSE;
+            return false;
         }
         // make sure the object has the material in it's inventory.
         if (SOURCE_AGENT == source)
@@ -1000,7 +1006,7 @@ BOOL LLToolDragAndDrop::handleDropMaterialProtections(LLViewerObject* hit_obj,
             else
             {
                 LL_WARNS() << "Unable to find source object." << LL_ENDL;
-                return FALSE;
+                return false;
             }
         }
         // Add the asset item to the target object's inventory.
@@ -1026,7 +1032,7 @@ BOOL LLToolDragAndDrop::handleDropMaterialProtections(LLViewerObject* hit_obj,
         // Check that we can add the asset as inventory to the object
         if (willObjectAcceptInventory(hit_obj,item) < ACCEPT_YES_COPY_SINGLE )
         {
-            return FALSE;
+            return false;
         }
         // *FIX: may want to make sure agent can paint hit_obj.
 
@@ -1053,7 +1059,7 @@ BOOL LLToolDragAndDrop::handleDropMaterialProtections(LLViewerObject* hit_obj,
         // Check that we can add the material as inventory to the object
         if (willObjectAcceptInventory(hit_obj,item) < ACCEPT_YES_COPY_SINGLE )
         {
-            return FALSE;
+            return false;
         }
         // *FIX: may want to make sure agent can paint hit_obj.
 
@@ -1067,7 +1073,7 @@ BOOL LLToolDragAndDrop::handleDropMaterialProtections(LLViewerObject* hit_obj,
         // we should return false here. This will requre a separate listener
         // since without listener, we have no way to receive update
     }
-    return TRUE;
+    return true;
 }
 
 void set_texture_to_material(LLViewerObject* hit_obj,
@@ -1167,7 +1173,7 @@ void LLToolDragAndDrop::dropTextureAllFaces(LLViewerObject* hit_obj,
 
     if (has_non_pbr_faces || remove_pbr)
     {
-        BOOL res = handleDropMaterialProtections(hit_obj, item, source, src_id);
+        bool res = handleDropMaterialProtections(hit_obj, item, source, src_id);
         if (!res)
         {
             return;
@@ -1272,7 +1278,7 @@ void LLToolDragAndDrop::dropMaterialOneFace(LLViewerObject* hit_obj,
     // SL-20013 must save asset_id before handleDropMaterialProtections since our item instance
     // may be deleted if it is moved into task inventory
     LLUUID asset_id = item->getAssetUUID();
-    BOOL success = handleDropMaterialProtections(hit_obj, item, source, src_id);
+    bool success = handleDropMaterialProtections(hit_obj, item, source, src_id);
     if (!success)
     {
         return;
@@ -1307,7 +1313,7 @@ void LLToolDragAndDrop::dropMaterialAllFaces(LLViewerObject* hit_obj,
     // SL-20013 must save asset_id before handleDropMaterialProtections since our item instance
     // may be deleted if it is moved into task inventory
     LLUUID asset_id = item->getAssetUUID();
-    BOOL success = handleDropMaterialProtections(hit_obj, item, source, src_id);
+    bool success = handleDropMaterialProtections(hit_obj, item, source, src_id);
 
     if (!success)
     {
@@ -1338,7 +1344,7 @@ void LLToolDragAndDrop::dropMesh(LLViewerObject* hit_obj,
         return;
     }
     LLUUID asset_id = item->getAssetUUID();
-    BOOL success = handleDropMaterialProtections(hit_obj, item, source, src_id);
+    bool success = handleDropMaterialProtections(hit_obj, item, source, src_id);
     if(!success)
     {
         return;
@@ -1346,7 +1352,7 @@ void LLToolDragAndDrop::dropMesh(LLViewerObject* hit_obj,
 
     LLSculptParams sculpt_params;
     sculpt_params.setSculptTexture(asset_id, LL_SCULPT_TYPE_MESH);
-    hit_obj->setParameterEntry(LLNetworkData::PARAMS_SCULPT, sculpt_params, TRUE);
+    hit_obj->setParameterEntry(LLNetworkData::PARAMS_SCULPT, sculpt_params, true);
 
     dialog_refresh_all();
 }
@@ -1489,7 +1495,7 @@ void LLToolDragAndDrop::dropTextureOneFace(LLViewerObject* hit_obj,
         }
         return;
     }
-    BOOL success = handleDropMaterialProtections(hit_obj, item, source, src_id);
+    bool success = handleDropMaterialProtections(hit_obj, item, source, src_id);
     if (!success)
     {
         return;
@@ -1559,7 +1565,7 @@ void LLToolDragAndDrop::dropTextureOneFace(LLViewerObject* hit_obj,
 
 void LLToolDragAndDrop::dropScript(LLViewerObject* hit_obj,
                                    LLInventoryItem* item,
-                                   BOOL active,
+                                   bool active,
                                    ESource source,
                                    const LLUUID& src_id)
 {
@@ -1605,7 +1611,7 @@ void LLToolDragAndDrop::dropScript(LLViewerObject* hit_obj,
         gFloaterTools->dirty();
 
         // VEFFECT: SetScript
-        LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, TRUE);
+        LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, true);
         effectp->setSourceObject(gAgentAvatarp);
         effectp->setTargetObject(hit_obj);
         effectp->setDuration(LL_HUD_DUR_SHORT);
@@ -1614,9 +1620,9 @@ void LLToolDragAndDrop::dropScript(LLViewerObject* hit_obj,
 }
 
 void LLToolDragAndDrop::dropObject(LLViewerObject* raycast_target,
-                   BOOL bypass_sim_raycast,
-                   BOOL from_task_inventory,
-                   BOOL remove_from_inventory)
+                   bool bypass_sim_raycast,
+                   bool from_task_inventory,
+                   bool remove_from_inventory)
 {
     LLViewerRegion* regionp = LLWorld::getInstance()->getRegionFromPosGlobal(mLastHitPos);
     if (!regionp)
@@ -1644,7 +1650,7 @@ void LLToolDragAndDrop::dropObject(LLViewerObject* raycast_target,
     if (!remove_from_inventory
         && !item->getPermissions().allowCopyBy(gAgent.getID()))
     {
-        remove_from_inventory = TRUE;
+        remove_from_inventory = true;
     }
 
     // Limit raycast to a single object.
@@ -1672,7 +1678,7 @@ void LLToolDragAndDrop::dropObject(LLViewerObject* raycast_target,
     LLUUID source_id = from_task_inventory ? mSourceID : LLUUID::null;
 
     // Select the object only if we're editing.
-    BOOL rez_selected = LLToolMgr::getInstance()->inEdit();
+    bool rez_selected = LLToolMgr::getInstance()->inEdit();
 
 
     LLVector3 ray_start = regionp->getPosRegionFromGlobal(mLastCameraPos);
@@ -1680,7 +1686,7 @@ void LLToolDragAndDrop::dropObject(LLViewerObject* raycast_target,
     // currently the ray's end point is an approximation,
     // and is sometimes too short (causing failure.)  so we
     // double the ray's length:
-    if (bypass_sim_raycast == FALSE)
+    if (!bypass_sim_raycast)
     {
         LLVector3 ray_direction = ray_start - ray_end;
         ray_end = ray_end - ray_direction;
@@ -1715,7 +1721,7 @@ void LLToolDragAndDrop::dropObject(LLViewerObject* raycast_target,
     msg->addVector3Fast(_PREHASH_RayStart, ray_start);
     msg->addVector3Fast(_PREHASH_RayEnd, ray_end);
     msg->addUUIDFast(_PREHASH_RayTargetID, ray_target_id );
-    msg->addBOOLFast(_PREHASH_RayEndIsIntersection, FALSE);
+    msg->addBOOLFast(_PREHASH_RayEndIsIntersection, false);
     msg->addBOOLFast(_PREHASH_RezSelected, rez_selected);
     msg->addBOOLFast(_PREHASH_RemoveItem, remove_from_inventory);
 
@@ -1767,7 +1773,7 @@ void LLToolDragAndDrop::dropObject(LLViewerObject* raycast_target,
     }
 
     // VEFFECT: DropObject
-    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, TRUE);
+    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, true);
     effectp->setSourceObject(gAgentAvatarp);
     effectp->setPositionGlobal(mLastHitPos);
     effectp->setDuration(LL_HUD_DUR_SHORT);
@@ -1830,7 +1836,7 @@ void LLToolDragAndDrop::dropInventory(LLViewerObject* hit_obj,
     }
 
     // VEFFECT: AddToInventory
-    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, TRUE);
+    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, true);
     effectp->setSourceObject(gAgentAvatarp);
     effectp->setTargetObject(hit_obj);
     effectp->setDuration(LL_HUD_DUR_SHORT);
@@ -1843,7 +1849,9 @@ void LLToolDragAndDrop::dropInventory(LLViewerObject* hit_obj,
 EAcceptance LLToolDragAndDrop::willObjectAcceptInventory(LLViewerObject* obj, LLInventoryItem* item, EDragAndDropType type)
 {
     // check the basics
-    if (!item || !obj) return ACCEPT_NO;
+    if (!item || !obj)
+        return ACCEPT_NO;
+
     // HACK: downcast
     LLViewerInventoryItem* vitem = (LLViewerInventoryItem*)item;
     if (!vitem->isFinished() && (type != DAD_CATEGORY))
@@ -1854,36 +1862,37 @@ EAcceptance LLToolDragAndDrop::willObjectAcceptInventory(LLViewerObject* obj, LL
         // Library or agent inventory only.
         return ACCEPT_NO;
     }
-    if (vitem->getIsLinkType()) return ACCEPT_NO; // No giving away links
+    if (vitem->getIsLinkType())
+        return ACCEPT_NO; // No giving away links
 
     // deny attempts to drop from an object onto itself. This is to
     // help make sure that drops that are from an object to an object
     // don't have to worry about order of evaluation. Think of this
     // like check for self in assignment.
-    if(obj->getID() == item->getParentUUID())
+    if (obj->getID() == item->getParentUUID())
     {
         return ACCEPT_NO;
     }
 
-    //BOOL copy = (perm.allowCopyBy(gAgent.getID(),
+    //bool copy = (perm.allowCopyBy(gAgent.getID(),
     //                            gAgent.getGroupID())
     //           && (obj->mPermModify || obj->mFlagAllowInventoryAdd));
-    BOOL worn = FALSE;
+    bool worn = false;
     LLVOAvatarSelf* my_avatar = NULL;
-    switch(item->getType())
+    switch (item->getType())
     {
     case LLAssetType::AT_OBJECT:
         my_avatar = gAgentAvatarp;
         if(my_avatar && my_avatar->isWearingAttachment(item->getUUID()))
         {
-                worn = TRUE;
+                worn = true;
         }
         break;
     case LLAssetType::AT_BODYPART:
     case LLAssetType::AT_CLOTHING:
-        if(gAgentWearables.isWearingItem(item->getUUID()))
+        if (gAgentWearables.isWearingItem(item->getUUID()))
         {
-            worn = TRUE;
+            worn = true;
         }
         break;
     case LLAssetType::AT_CALLINGCARD:
@@ -1891,33 +1900,37 @@ EAcceptance LLToolDragAndDrop::willObjectAcceptInventory(LLViewerObject* obj, LL
         // because of incomplete LSL support. See STORM-1117.
         return ACCEPT_NO;
     default:
-            break;
+        break;
     }
     const LLPermissions& perm = item->getPermissions();
-    BOOL modify = (obj->permModify() || obj->flagAllowInventoryAdd());
-    BOOL transfer = FALSE;
-    if((obj->permYouOwner() && (perm.getOwner() == gAgent.getID()))
+    bool modify = (obj->permModify() || obj->flagAllowInventoryAdd());
+    bool transfer = false;
+    if ((obj->permYouOwner() && (perm.getOwner() == gAgent.getID()))
        || perm.allowOperationBy(PERM_TRANSFER, gAgent.getID()))
     {
-        transfer = TRUE;
+        transfer = true;
     }
-    BOOL volume = (LL_PCODE_VOLUME == obj->getPCode());
-    BOOL attached = obj->isAttachment();
-    BOOL unrestricted = ((perm.getMaskBase() & PERM_ITEM_UNRESTRICTED) == PERM_ITEM_UNRESTRICTED) ? TRUE : FALSE;
-    if(attached && !unrestricted)
+    bool volume = (LL_PCODE_VOLUME == obj->getPCode());
+    bool attached = obj->isAttachment();
+    bool unrestricted = (perm.getMaskBase() & PERM_ITEM_UNRESTRICTED) == PERM_ITEM_UNRESTRICTED;
+
+    if (attached && !unrestricted)
     {
         // Attachments are in world and in inventory simultaneously,
         // at the moment server doesn't support such a situation.
         return ACCEPT_NO_LOCKED;
     }
-    else if(modify && transfer && volume && !worn)
+
+    if (modify && transfer && volume && !worn)
     {
         return ACCEPT_YES_MULTI;
     }
-    else if(!modify)
+
+    if (!modify)
     {
         return ACCEPT_NO_LOCKED;
     }
+
     return ACCEPT_NO;
 }
 
@@ -1938,7 +1951,7 @@ static void give_inventory_cb(const LLSD& notification, const LLSD& response)
     LLViewerInventoryCategory * inv_cat =  gInventory.getCategory(payload["item_id"]);
     if (NULL == inv_item && NULL == inv_cat)
     {
-        llassert( FALSE );
+        llassert( false );
         return;
     }
     bool successfully_shared;
@@ -1997,7 +2010,7 @@ static void get_name_cb(const LLUUID& id,
 
 // function used as drag-and-drop handler for simple agent give inventory requests
 //static
-bool LLToolDragAndDrop::handleGiveDragAndDrop(LLUUID dest_agent, LLUUID session_id, BOOL drop,
+bool LLToolDragAndDrop::handleGiveDragAndDrop(LLUUID dest_agent, LLUUID session_id, bool drop,
                                               EDragAndDropType cargo_type,
                                               void* cargo_data,
                                               EAcceptance* accept,
@@ -2075,7 +2088,7 @@ bool LLToolDragAndDrop::handleGiveDragAndDrop(LLUUID dest_agent, LLUUID session_
         break;
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -2085,14 +2098,14 @@ bool LLToolDragAndDrop::handleGiveDragAndDrop(LLUUID dest_agent, LLUUID session_
 ///
 
 EAcceptance LLToolDragAndDrop::dad3dNULL(
-    LLViewerObject*, S32, MASK, BOOL)
+    LLViewerObject*, S32, MASK, bool)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dNULL()" << LL_ENDL;
     return ACCEPT_NO;
 }
 
 EAcceptance LLToolDragAndDrop::dad3dRezAttachmentFromInv(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dRezAttachmentFromInv()" << LL_ENDL;
     // must be in the user's inventory
@@ -2151,7 +2164,7 @@ EAcceptance LLToolDragAndDrop::dad3dRezAttachmentFromInv(
 
 
 EAcceptance LLToolDragAndDrop::dad3dRezObjectOnLand(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     if (mSource == SOURCE_WORLD)
     {
@@ -2171,21 +2184,21 @@ EAcceptance LLToolDragAndDrop::dad3dRezObjectOnLand(
     }
 
     EAcceptance accept;
-    BOOL remove_inventory;
+    bool remove_inventory;
 
     // Get initial settings based on shift key
     if (mask & MASK_SHIFT)
     {
         // For now, always make copy
         //accept = ACCEPT_YES_SINGLE;
-        //remove_inventory = TRUE;
+        //remove_inventory = true;
         accept = ACCEPT_YES_COPY_SINGLE;
-        remove_inventory = FALSE;
+        remove_inventory = false;
     }
     else
     {
         accept = ACCEPT_YES_COPY_SINGLE;
-        remove_inventory = FALSE;
+        remove_inventory = false;
     }
 
     // check if the item can be copied. If not, send that to the sim
@@ -2193,7 +2206,7 @@ EAcceptance LLToolDragAndDrop::dad3dRezObjectOnLand(
     if(!item->getPermissions().allowCopyBy(gAgent.getID()))
     {
         accept = ACCEPT_YES_SINGLE;
-        remove_inventory = TRUE;
+        remove_inventory = true;
     }
 
     // Check if it's in the trash.
@@ -2205,14 +2218,14 @@ EAcceptance LLToolDragAndDrop::dad3dRezObjectOnLand(
 
     if(drop)
     {
-        dropObject(obj, TRUE, FALSE, remove_inventory);
+        dropObject(obj, true, false, remove_inventory);
     }
 
     return accept;
 }
 
 EAcceptance LLToolDragAndDrop::dad3dRezObjectOnObject(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     // handle objects coming from object inventory
     if (mSource == SOURCE_WORLD)
@@ -2249,20 +2262,20 @@ EAcceptance LLToolDragAndDrop::dad3dRezObjectOnObject(
     }
 
     EAcceptance accept;
-    BOOL remove_inventory;
+    bool remove_inventory;
 
     if (mask & MASK_SHIFT)
     {
         // For now, always make copy
         //accept = ACCEPT_YES_SINGLE;
-        //remove_inventory = TRUE;
+        //remove_inventory = true;
         accept = ACCEPT_YES_COPY_SINGLE;
-        remove_inventory = FALSE;
+        remove_inventory = false;
     }
     else
     {
         accept = ACCEPT_YES_COPY_SINGLE;
-        remove_inventory = FALSE;
+        remove_inventory = false;
     }
 
     // check if the item can be copied. If not, send that to the sim
@@ -2270,7 +2283,7 @@ EAcceptance LLToolDragAndDrop::dad3dRezObjectOnObject(
     if(!item->getPermissions().allowCopyBy(gAgent.getID()))
     {
         accept = ACCEPT_YES_SINGLE;
-        remove_inventory = TRUE;
+        remove_inventory = true;
     }
 
     // Check if it's in the trash.
@@ -2278,19 +2291,19 @@ EAcceptance LLToolDragAndDrop::dad3dRezObjectOnObject(
     if(gInventory.isObjectDescendentOf(item->getUUID(), trash_id))
     {
         accept = ACCEPT_YES_SINGLE;
-        remove_inventory = TRUE;
+        remove_inventory = true;
     }
 
     if(drop)
     {
-        dropObject(obj, FALSE, FALSE, remove_inventory);
+        dropObject(obj, false, false, remove_inventory);
     }
 
     return accept;
 }
 
 EAcceptance LLToolDragAndDrop::dad3dRezScript(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dRezScript()" << LL_ENDL;
 
@@ -2310,7 +2323,7 @@ EAcceptance LLToolDragAndDrop::dad3dRezScript(
     {
         // rez in the script active by default, rez in inactive if the
         // control key is being held down.
-        BOOL active = ((mask & MASK_CONTROL) == 0);
+        bool active = ((mask & MASK_CONTROL) == 0);
 
         LLViewerObject* root_object = obj;
         if (obj && obj->getParent())
@@ -2328,7 +2341,7 @@ EAcceptance LLToolDragAndDrop::dad3dRezScript(
 }
 
 EAcceptance LLToolDragAndDrop::dad3dApplyToObject(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop, EDragAndDropType cargo_type)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop, EDragAndDropType cargo_type)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dApplyToObject()" << LL_ENDL;
 
@@ -2447,7 +2460,7 @@ EAcceptance LLToolDragAndDrop::dad3dApplyToObject(
         }
 
         // VEFFECT: SetTexture
-        LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, TRUE);
+        LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, true);
         effectp->setSourceObject(gAgentAvatarp);
         effectp->setTargetObject(obj);
         effectp->setDuration(LL_HUD_DUR_SHORT);
@@ -2460,25 +2473,42 @@ EAcceptance LLToolDragAndDrop::dad3dApplyToObject(
 
 
 EAcceptance LLToolDragAndDrop::dad3dTextureObject(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     return dad3dApplyToObject(obj, face, mask, drop, DAD_TEXTURE);
 }
 
 EAcceptance LLToolDragAndDrop::dad3dMaterialObject(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     return dad3dApplyToObject(obj, face, mask, drop, DAD_MATERIAL);
 }
 
 EAcceptance LLToolDragAndDrop::dad3dMeshObject(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     return dad3dApplyToObject(obj, face, mask, drop, DAD_MESH);
 }
 
+
+/*
+EAcceptance LLToolDragAndDrop::dad3dTextureSelf(
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
+{
+    LL_DEBUGS() << "LLToolDragAndDrop::dad3dTextureAvatar()" << LL_ENDL;
+    if(drop)
+    {
+        if( !(mask & MASK_SHIFT) )
+        {
+            dropTextureOneFaceAvatar( (LLVOAvatar*)obj, face, (LLInventoryItem*)mCargoData);
+        }
+    }
+    return (mask & MASK_SHIFT) ? ACCEPT_NO : ACCEPT_YES_SINGLE;
+}
+*/
+
 EAcceptance LLToolDragAndDrop::dad3dWearItem(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dWearItem()" << LL_ENDL;
     LLViewerInventoryItem* item;
@@ -2511,7 +2541,7 @@ EAcceptance LLToolDragAndDrop::dad3dWearItem(
 }
 
 EAcceptance LLToolDragAndDrop::dad3dActivateGesture(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dActivateGesture()" << LL_ENDL;
     LLViewerInventoryItem* item;
@@ -2560,7 +2590,7 @@ EAcceptance LLToolDragAndDrop::dad3dActivateGesture(
 }
 
 EAcceptance LLToolDragAndDrop::dad3dWearCategory(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dWearCategory()" << LL_ENDL;
     LLViewerInventoryItem* item;
@@ -2590,46 +2620,46 @@ EAcceptance LLToolDragAndDrop::dad3dWearCategory(
         return ACCEPT_NO_CUSTOM;
     }
 
-    if(mSource == SOURCE_AGENT)
+    if (mSource == SOURCE_AGENT)
     {
         const LLUUID trash_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_TRASH);
-        if( gInventory.isObjectDescendentOf( category->getUUID(), trash_id ) )
+        if (gInventory.isObjectDescendentOf(category->getUUID(), trash_id))
         {
             return ACCEPT_NO;
         }
 
         const LLUUID &outbox_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_OUTBOX);
-        if(outbox_id.notNull() && gInventory.isObjectDescendentOf(category->getUUID(), outbox_id))
+        if (outbox_id.notNull() && gInventory.isObjectDescendentOf(category->getUUID(), outbox_id))
         {
             // Legacy
             return ACCEPT_NO;
         }
 
-        if(drop)
+        if (drop)
         {
-            BOOL append = ( (mask & MASK_SHIFT) ? TRUE : FALSE );
-            LLAppearanceMgr::instance().wearInventoryCategory(category, false, append);
+            LLAppearanceMgr::instance().wearInventoryCategory(category, false, mask & MASK_SHIFT);
         }
+
         return ACCEPT_YES_MULTI;
     }
-    else if(mSource == SOURCE_LIBRARY)
+
+    if (mSource == SOURCE_LIBRARY)
     {
-        if(drop)
+        if (drop)
         {
             LLAppearanceMgr::instance().wearInventoryCategory(category, true, false);
         }
+
         return ACCEPT_YES_MULTI;
     }
-    else
-    {
-        // TODO: copy/move category to avatar's inventory and then wear it.
-        return ACCEPT_NO;
-    }
+
+    // TODO: copy/move category to avatar's inventory and then wear it.
+    return ACCEPT_NO;
 }
 
 
 EAcceptance LLToolDragAndDrop::dad3dUpdateInventory(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dadUpdateInventory()" << LL_ENDL;
 
@@ -2643,7 +2673,9 @@ EAcceptance LLToolDragAndDrop::dad3dUpdateInventory(
     LLViewerInventoryItem* item;
     LLViewerInventoryCategory* cat;
     locateInventory(item, cat);
-    if (!item || !item->isFinished()) return ACCEPT_NO;
+    if (!item || !item->isFinished())
+        return ACCEPT_NO;
+
     LLViewerObject* root_object = obj;
     if (obj && obj->getParent())
     {
@@ -2655,21 +2687,22 @@ EAcceptance LLToolDragAndDrop::dad3dUpdateInventory(
     }
 
     EAcceptance rv = willObjectAcceptInventory(root_object, item);
-    if(root_object && drop && (ACCEPT_YES_COPY_SINGLE <= rv))
+    if (root_object && drop && (ACCEPT_YES_COPY_SINGLE <= rv))
     {
         dropInventory(root_object, item, mSource, mSourceID);
     }
+
     return rv;
 }
 
-BOOL LLToolDragAndDrop::dadUpdateInventory(LLViewerObject* obj, BOOL drop)
+bool LLToolDragAndDrop::dadUpdateInventory(LLViewerObject* obj, bool drop)
 {
     EAcceptance rv = dad3dUpdateInventory(obj, -1, MASK_NONE, drop);
-    return (rv >= ACCEPT_YES_COPY_SINGLE);
+    return rv >= ACCEPT_YES_COPY_SINGLE;
 }
 
 EAcceptance LLToolDragAndDrop::dad3dUpdateInventoryCategory(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dUpdateInventoryCategory()" << LL_ENDL;
     if (obj == NULL)
@@ -2785,7 +2818,7 @@ EAcceptance LLToolDragAndDrop::dad3dUpdateInventoryCategory(
 
 
 EAcceptance LLToolDragAndDrop::dad3dRezCategoryOnObject(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     if ((mask & MASK_CONTROL))
     {
@@ -2798,15 +2831,15 @@ EAcceptance LLToolDragAndDrop::dad3dRezCategoryOnObject(
 }
 
 
-BOOL LLToolDragAndDrop::dadUpdateInventoryCategory(LLViewerObject* obj,
-                                                   BOOL drop)
+bool LLToolDragAndDrop::dadUpdateInventoryCategory(LLViewerObject* obj,
+                                                   bool drop)
 {
     EAcceptance rv = dad3dUpdateInventoryCategory(obj, -1, MASK_NONE, drop);
     return (rv >= ACCEPT_YES_COPY_SINGLE);
 }
 
 EAcceptance LLToolDragAndDrop::dad3dGiveInventoryObject(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dGiveInventoryObject()" << LL_ENDL;
 
@@ -2844,7 +2877,7 @@ EAcceptance LLToolDragAndDrop::dad3dGiveInventoryObject(
 
 
 EAcceptance LLToolDragAndDrop::dad3dGiveInventory(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dGiveInventory()" << LL_ENDL;
     // item has to be in agent inventory.
@@ -2867,7 +2900,7 @@ EAcceptance LLToolDragAndDrop::dad3dGiveInventory(
 }
 
 EAcceptance LLToolDragAndDrop::dad3dGiveInventoryCategory(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dGiveInventoryCategory()" << LL_ENDL;
     if(drop && obj)
@@ -2885,7 +2918,7 @@ EAcceptance LLToolDragAndDrop::dad3dGiveInventoryCategory(
 
 
 EAcceptance LLToolDragAndDrop::dad3dRezFromObjectOnLand(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dRezFromObjectOnLand()" << LL_ENDL;
     LLViewerInventoryItem* item = NULL;
@@ -2900,13 +2933,13 @@ EAcceptance LLToolDragAndDrop::dad3dRezFromObjectOnLand(
     }
     if(drop)
     {
-        dropObject(obj, TRUE, TRUE, FALSE);
+        dropObject(obj, true, true, false);
     }
     return ACCEPT_YES_SINGLE;
 }
 
 EAcceptance LLToolDragAndDrop::dad3dRezFromObjectOnObject(
-    LLViewerObject* obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject* obj, S32 face, MASK mask, bool drop)
 {
     LL_DEBUGS() << "LLToolDragAndDrop::dad3dRezFromObjectOnObject()" << LL_ENDL;
     LLViewerInventoryItem* item;
@@ -2935,13 +2968,13 @@ EAcceptance LLToolDragAndDrop::dad3dRezFromObjectOnObject(
     }
     if(drop)
     {
-        dropObject(obj, FALSE, TRUE, FALSE);
+        dropObject(obj, false, true, false);
     }
     return ACCEPT_YES_SINGLE;
 }
 
 EAcceptance LLToolDragAndDrop::dad3dCategoryOnLand(
-    LLViewerObject *obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject *obj, S32 face, MASK mask, bool drop)
 {
     return ACCEPT_NO;
     /*
@@ -2979,7 +3012,7 @@ EAcceptance LLToolDragAndDrop::dad3dCategoryOnLand(
 // This shortcuts alot of steps to make a basic object
 // w/ an inventory and a special permissions set
 EAcceptance LLToolDragAndDrop::dad3dAssetOnLand(
-    LLViewerObject *obj, S32 face, MASK mask, BOOL drop)
+    LLViewerObject *obj, S32 face, MASK mask, bool drop)
 {
     return ACCEPT_NO;
     /*
diff --git a/indra/newview/lltooldraganddrop.h b/indra/newview/lltooldraganddrop.h
index 5d10daca4d..ad6402c4ad 100644
--- a/indra/newview/lltooldraganddrop.h
+++ b/indra/newview/lltooldraganddrop.h
@@ -48,15 +48,15 @@ public:
     typedef boost::signals2::signal<void ()> enddrag_signal_t;
 
     // overridden from LLTool
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask) override;
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask) override;
-    virtual BOOL    handleKey(KEY key, MASK mask) override;
-    virtual BOOL    handleToolTip(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleHover(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleKey(KEY key, MASK mask) override;
+    virtual bool    handleToolTip(S32 x, S32 y, MASK mask) override;
     virtual void    onMouseCaptureLost() override;
     virtual void    handleDeselect() override;
 
     void            setDragStart( S32 x, S32 y );           // In screen space
-    BOOL            isOverThreshold( S32 x, S32 y );        // In screen space
+    bool            isOverThreshold( S32 x, S32 y );        // In screen space
 
     enum ESource
     {
@@ -87,14 +87,14 @@ public:
 
     void setCargoCount(U32 count) { mCargoCount = count; }
     void resetCargoCount() { mCargoCount = 0; }
-    U32 getCargoCount() const { return (mCargoCount > 0) ? mCargoCount : mCargoIDs.size(); }
+    U32 getCargoCount() const { return (mCargoCount > 0) ? mCargoCount : static_cast<S32>(mCargoIDs.size()); }
     S32 getCargoIndex() const { return mCurItemIndex; }
 
     static S32 getOperationId() { return sOperationId; }
 
-    // deal with permissions of object, etc. returns TRUE if drop can
-    // proceed, otherwise FALSE.
-    static BOOL handleDropMaterialProtections(LLViewerObject* hit_obj,
+    // deal with permissions of object, etc. returns true if drop can
+    // proceed, otherwise false.
+    static bool handleDropMaterialProtections(LLViewerObject* hit_obj,
                          LLInventoryItem* item,
                          LLToolDragAndDrop::ESource source,
                          const LLUUID& src_id);
@@ -112,14 +112,14 @@ protected:
 
 protected:
     // dragOrDrop3dImpl points to a member of LLToolDragAndDrop that
-    // takes parameters (LLViewerObject* obj, S32 face, MASK, BOOL
-    // drop) and returns a BOOL if drop is ok
+    // takes parameters (LLViewerObject* obj, S32 face, MASK, bool
+    // drop) and returns a bool if drop is ok
     typedef EAcceptance (LLToolDragAndDrop::*dragOrDrop3dImpl)
-        (LLViewerObject*, S32, MASK, BOOL);
+        (LLViewerObject*, S32, MASK, bool);
 
-    void dragOrDrop(S32 x, S32 y, MASK mask, BOOL drop,
+    void dragOrDrop(S32 x, S32 y, MASK mask, bool drop,
                     EAcceptance* acceptance);
-    void dragOrDrop3D(S32 x, S32 y, MASK mask, BOOL drop,
+    void dragOrDrop3D(S32 x, S32 y, MASK mask, bool drop,
                       EAcceptance* acceptance);
 
     static void pickCallback(const LLPickInfo& pick_info);
@@ -146,7 +146,7 @@ protected:
 
     ECursorType     mCursor;
     EAcceptance     mLastAccept;
-    BOOL            mDrop;
+    bool            mDrop;
     S32             mCurItemIndex;
     std::string     mToolTipMsg;
     std::string     mCustomMsg;
@@ -155,57 +155,57 @@ protected:
 
 protected:
     // 3d drop functions. these call down into the static functions
-    // named drop<ThingToDrop> if drop is TRUE and permissions allow
+    // named drop<ThingToDrop> if drop is true and permissions allow
     // that behavior.
-    EAcceptance dad3dNULL(LLViewerObject*, S32, MASK, BOOL);
+    EAcceptance dad3dNULL(LLViewerObject*, S32, MASK, bool);
     EAcceptance dad3dRezObjectOnLand(LLViewerObject* obj, S32 face,
-                                     MASK mask, BOOL drop);
+                                     MASK mask, bool drop);
     EAcceptance dad3dRezObjectOnObject(LLViewerObject* obj, S32 face,
-                                       MASK mask, BOOL drop);
+                                       MASK mask, bool drop);
     EAcceptance dad3dRezCategoryOnObject(LLViewerObject* obj, S32 face,
-                                         MASK mask, BOOL drop);
+                                         MASK mask, bool drop);
     EAcceptance dad3dRezScript(LLViewerObject* obj, S32 face,
-                               MASK mask, BOOL drop);
+                               MASK mask, bool drop);
     EAcceptance dad3dTextureObject(LLViewerObject* obj, S32 face,
-                                   MASK mask, BOOL drop);
+                                   MASK mask, bool drop);
     EAcceptance dad3dMaterialObject(LLViewerObject* obj, S32 face,
-        MASK mask, BOOL drop);
+        MASK mask, bool drop);
     EAcceptance dad3dMeshObject(LLViewerObject* obj, S32 face,
-                                   MASK mask, BOOL drop);
+                                   MASK mask, bool drop);
 //  EAcceptance dad3dTextureSelf(LLViewerObject* obj, S32 face,
-//                               MASK mask, BOOL drop);
+//                               MASK mask, bool drop);
     EAcceptance dad3dWearItem(LLViewerObject* obj, S32 face,
-                                 MASK mask, BOOL drop);
+                                 MASK mask, bool drop);
     EAcceptance dad3dWearCategory(LLViewerObject* obj, S32 face,
-                                 MASK mask, BOOL drop);
+                                 MASK mask, bool drop);
     EAcceptance dad3dUpdateInventory(LLViewerObject* obj, S32 face,
-                                     MASK mask, BOOL drop);
+                                     MASK mask, bool drop);
     EAcceptance dad3dUpdateInventoryCategory(LLViewerObject* obj,
                                              S32 face,
                                              MASK mask,
-                                             BOOL drop);
+                                             bool drop);
     EAcceptance dad3dGiveInventoryObject(LLViewerObject* obj, S32 face,
-                                   MASK mask, BOOL drop);
+                                   MASK mask, bool drop);
     EAcceptance dad3dGiveInventory(LLViewerObject* obj, S32 face,
-                                   MASK mask, BOOL drop);
+                                   MASK mask, bool drop);
     EAcceptance dad3dGiveInventoryCategory(LLViewerObject* obj, S32 face,
-                                           MASK mask, BOOL drop);
+                                           MASK mask, bool drop);
     EAcceptance dad3dRezFromObjectOnLand(LLViewerObject* obj, S32 face,
-                                         MASK mask, BOOL drop);
+                                         MASK mask, bool drop);
     EAcceptance dad3dRezFromObjectOnObject(LLViewerObject* obj, S32 face,
-                                           MASK mask, BOOL drop);
+                                           MASK mask, bool drop);
     EAcceptance dad3dRezAttachmentFromInv(LLViewerObject* obj, S32 face,
-                                          MASK mask, BOOL drop);
+                                          MASK mask, bool drop);
     EAcceptance dad3dCategoryOnLand(LLViewerObject *obj, S32 face,
-                                    MASK mask, BOOL drop);
+                                    MASK mask, bool drop);
     EAcceptance dad3dAssetOnLand(LLViewerObject *obj, S32 face,
-                                 MASK mask, BOOL drop);
+                                 MASK mask, bool drop);
     EAcceptance dad3dActivateGesture(LLViewerObject *obj, S32 face,
-                                 MASK mask, BOOL drop);
+                                 MASK mask, bool drop);
 
     // helper called by methods above to handle "application" of an item
     // to an object (texture applied to face, mesh applied to shape, etc.)
-    EAcceptance dad3dApplyToObject(LLViewerObject* obj, S32 face, MASK mask, BOOL drop, EDragAndDropType cargo_type);
+    EAcceptance dad3dApplyToObject(LLViewerObject* obj, S32 face, MASK mask, bool drop, EDragAndDropType cargo_type);
 
 
     // set the LLToolDragAndDrop's cursor based on the given acceptance
@@ -222,9 +222,9 @@ protected:
     //  LLViewerInventoryItem::item_array_t& items);
 
     void dropObject(LLViewerObject* raycast_target,
-            BOOL bypass_sim_raycast,
-            BOOL from_task_inventory,
-            BOOL remove_from_inventory);
+            bool bypass_sim_raycast,
+            bool from_task_inventory,
+            bool remove_from_inventory);
 
     // accessor that looks at permissions, copyability, and names of
     // inventory items to determine if a drop would be ok.
@@ -232,15 +232,15 @@ protected:
 
 public:
     // helper functions
-    static BOOL isInventoryDropAcceptable(LLViewerObject* obj, LLInventoryItem* item) { return (ACCEPT_YES_COPY_SINGLE <= willObjectAcceptInventory(obj, item)); }
+    static bool isInventoryDropAcceptable(LLViewerObject* obj, LLInventoryItem* item) { return (ACCEPT_YES_COPY_SINGLE <= willObjectAcceptInventory(obj, item)); }
 
-    BOOL dadUpdateInventory(LLViewerObject* obj, BOOL drop);
-    BOOL dadUpdateInventoryCategory(LLViewerObject* obj, BOOL drop);
+    bool dadUpdateInventory(LLViewerObject* obj, bool drop);
+    bool dadUpdateInventoryCategory(LLViewerObject* obj, bool drop);
 
     // methods that act on the simulator state.
     static void dropScript(LLViewerObject* hit_obj,
                            LLInventoryItem* item,
-                           BOOL active,
+                           bool active,
                            ESource source,
                            const LLUUID& src_id);
     static void dropTexture(LLViewerObject* hit_obj,
@@ -291,7 +291,7 @@ public:
                               ESource source,
                               const LLUUID& src_id);
 
-    static bool handleGiveDragAndDrop(LLUUID agent, LLUUID session, BOOL drop,
+    static bool handleGiveDragAndDrop(LLUUID agent, LLUUID session, bool drop,
                                       EDragAndDropType cargo_type,
                                       void* cargo_data,
                                       EAcceptance* accept,
diff --git a/indra/newview/lltoolface.cpp b/indra/newview/lltoolface.cpp
index 3176ba4bd5..426f340be1 100644
--- a/indra/newview/lltoolface.cpp
+++ b/indra/newview/lltoolface.cpp
@@ -53,28 +53,28 @@ LLToolFace::~LLToolFace()
 { }
 
 
-BOOL LLToolFace::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLToolFace::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if (!LLSelectMgr::getInstance()->getSelection()->isEmpty())
     {
         // You should already have an object selected from the mousedown.
         // If so, show its properties
         LLFloaterReg::showInstance("build", "Texture");
-        return TRUE;
+        return true;
     }
     else
     {
         // Nothing selected means the first mouse click was probably
         // bad, so try again.
-        return FALSE;
+        return false;
     }
 }
 
 
-BOOL LLToolFace::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolFace::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     gViewerWindow->pickAsync(x, y, mask, pickCallback);
-    return TRUE;
+    return true;
 }
 
 void LLToolFace::pickCallback(const LLPickInfo& pick_info)
@@ -134,14 +134,14 @@ void LLToolFace::pickCallback(const LLPickInfo& pick_info)
 void LLToolFace::handleSelect()
 {
     // From now on, draw faces
-    LLSelectMgr::getInstance()->setTEMode(TRUE);
+    LLSelectMgr::getInstance()->setTEMode(true);
 }
 
 
 void LLToolFace::handleDeselect()
 {
     // Stop drawing faces
-    LLSelectMgr::getInstance()->setTEMode(FALSE);
+    LLSelectMgr::getInstance()->setTEMode(false);
 }
 
 
diff --git a/indra/newview/lltoolface.h b/indra/newview/lltoolface.h
index ff3eead6a6..18d42da1e1 100644
--- a/indra/newview/lltoolface.h
+++ b/indra/newview/lltoolface.h
@@ -39,8 +39,8 @@ class LLToolFace
     virtual ~LLToolFace();
 public:
 
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL    handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleDoubleClick(S32 x, S32 y, MASK mask) override;
     virtual void    handleSelect() override;
     virtual void    handleDeselect() override;
     virtual void    render() override;          // draw face highlights
diff --git a/indra/newview/lltoolfocus.cpp b/indra/newview/lltoolfocus.cpp
index e34e0cce50..0ba7ae5e84 100644
--- a/indra/newview/lltoolfocus.cpp
+++ b/indra/newview/lltoolfocus.cpp
@@ -56,9 +56,9 @@
 #include "llmenugl.h"
 
 // Globals
-BOOL gCameraBtnZoom = TRUE;
-BOOL gCameraBtnOrbit = FALSE;
-BOOL gCameraBtnPan = FALSE;
+bool gCameraBtnZoom = true;
+bool gCameraBtnOrbit = false;
+bool gCameraBtnPan = false;
 
 const S32 SLOP_RANGE = 4;
 
@@ -72,12 +72,12 @@ LLToolCamera::LLToolCamera()
     mAccumY(0),
     mMouseDownX(0),
     mMouseDownY(0),
-    mOutsideSlopX(FALSE),
-    mOutsideSlopY(FALSE),
-    mValidClickPoint(FALSE),
+    mOutsideSlopX(false),
+    mOutsideSlopY(false),
+    mValidClickPoint(false),
     mClickPickPending(false),
-    mValidSelection(FALSE),
-    mMouseSteering(FALSE),
+    mValidSelection(false),
+    mMouseSteering(false),
     mMouseUpX(0),
     mMouseUpY(0),
     mMouseUpMask(MASK_NONE)
@@ -101,10 +101,10 @@ void LLToolCamera::handleSelect()
 // virtual
 void LLToolCamera::handleDeselect()
 {
-//  gAgent.setLookingAtAvatar(FALSE);
+//  gAgent.setLookingAtAvatar(false);
 
     // Make sure that temporary selection won't pass anywhere except pie tool.
-    MASK override_mask = gKeyboard ? gKeyboard->currentMask(TRUE) : 0;
+    MASK override_mask = gKeyboard ? gKeyboard->currentMask(true) : 0;
     if (!mValidSelection && (override_mask != MASK_NONE || (gFloaterTools && gFloaterTools->getVisible())))
     {
         LLMenuGL::sMenuContainer->hideMenus();
@@ -112,10 +112,10 @@ void LLToolCamera::handleDeselect()
     }
 }
 
-BOOL LLToolCamera::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolCamera::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // Ensure a mouseup
-    setMouseCapture(TRUE);
+    setMouseCapture(true);
 
     // call the base class to propogate info to sim
     LLTool::handleMouseDown(x, y, mask);
@@ -123,10 +123,10 @@ BOOL LLToolCamera::handleMouseDown(S32 x, S32 y, MASK mask)
     mAccumX = 0;
     mAccumY = 0;
 
-    mOutsideSlopX = FALSE;
-    mOutsideSlopY = FALSE;
+    mOutsideSlopX = false;
+    mOutsideSlopY = false;
 
-    mValidClickPoint = FALSE;
+    mValidClickPoint = false;
 
     // Sometimes Windows issues down and up events near simultaneously
     // without giving async pick a chance to trigged
@@ -141,9 +141,9 @@ BOOL LLToolCamera::handleMouseDown(S32 x, S32 y, MASK mask)
 
     gViewerWindow->hideCursor();
 
-    gViewerWindow->pickAsync(x, y, mask, pickCallback, /*BOOL pick_transparent*/ FALSE, /*BOOL pick_rigged*/ FALSE, /*BOOL pick_unselectable*/ TRUE);
+    gViewerWindow->pickAsync(x, y, mask, pickCallback, /*bool pick_transparent*/ false, /*bool pick_rigged*/ false, /*bool pick_unselectable*/ true);
 
-    return TRUE;
+    return true;
 }
 
 void LLToolCamera::pickCallback(const LLPickInfo& pick_info)
@@ -166,7 +166,7 @@ void LLToolCamera::pickCallback(const LLPickInfo& pick_info)
     // Check for hit the sky, or some other invalid point
     if (!hit_obj && pick_info.mPosGlobal.isExactlyZero())
     {
-        camera->mValidClickPoint = FALSE;
+        camera->mValidClickPoint = false;
         return;
     }
 
@@ -176,37 +176,37 @@ void LLToolCamera::pickCallback(const LLPickInfo& pick_info)
         LLObjectSelectionHandle selection = LLSelectMgr::getInstance()->getSelection();
         if (!selection->getObjectCount() || selection->getSelectType() != SELECT_TYPE_HUD)
         {
-            camera->mValidClickPoint = FALSE;
+            camera->mValidClickPoint = false;
             return;
         }
     }
 
     if( CAMERA_MODE_CUSTOMIZE_AVATAR == gAgentCamera.getCameraMode() )
     {
-        BOOL good_customize_avatar_hit = FALSE;
+        bool good_customize_avatar_hit = false;
         if( hit_obj )
         {
             if (isAgentAvatarValid() && (hit_obj == gAgentAvatarp))
             {
                 // It's you
-                good_customize_avatar_hit = TRUE;
+                good_customize_avatar_hit = true;
             }
             else if (hit_obj->isAttachment() && hit_obj->permYouOwner())
             {
                 // It's an attachment that you're wearing
-                good_customize_avatar_hit = TRUE;
+                good_customize_avatar_hit = true;
             }
         }
 
         if( !good_customize_avatar_hit )
         {
-            camera->mValidClickPoint = FALSE;
+            camera->mValidClickPoint = false;
             return;
         }
 
         if( gMorphView )
         {
-            gMorphView->setCameraDrivenByKeys( FALSE );
+            gMorphView->setCameraDrivenByKeys( false );
         }
     }
     //RN: check to see if this is mouse-driving as opposed to ALT-zoom or Focus tool
@@ -219,18 +219,18 @@ void LLToolCamera::pickCallback(const LLPickInfo& pick_info)
             // ...clicked on a world object, so focus at its position
             if (!hit_obj->isHUDAttachment())
             {
-                gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+                gAgentCamera.setFocusOnAvatar(false, ANIMATE);
                 gAgentCamera.setFocusGlobal(pick_info);
             }
         }
         else if (!pick_info.mPosGlobal.isExactlyZero())
         {
             // Hit the ground
-            gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+            gAgentCamera.setFocusOnAvatar(false, ANIMATE);
             gAgentCamera.setFocusGlobal(pick_info);
         }
 
-        BOOL zoom_tool = gCameraBtnZoom && (LLToolMgr::getInstance()->getBaseTool() == LLToolCamera::getInstance());
+        bool zoom_tool = gCameraBtnZoom && (LLToolMgr::getInstance()->getBaseTool() == LLToolCamera::getInstance());
         if (!(pick_info.mKeyMask & MASK_ALT) &&
             !LLFloaterCamera::inFreeCameraMode() &&
             !zoom_tool &&
@@ -240,16 +240,16 @@ void LLToolCamera::pickCallback(const LLPickInfo& pick_info)
             (hit_obj == gAgentAvatarp ||
              (hit_obj && hit_obj->isAttachment() && LLVOAvatar::findAvatarFromAttachment(hit_obj)->isSelf())))
         {
-            LLToolCamera::getInstance()->mMouseSteering = TRUE;
+            LLToolCamera::getInstance()->mMouseSteering = true;
         }
 
     }
 
-    camera->mValidClickPoint = TRUE;
+    camera->mValidClickPoint = true;
 
     if( CAMERA_MODE_CUSTOMIZE_AVATAR == gAgentCamera.getCameraMode() )
     {
-        gAgentCamera.setFocusOnAvatar(FALSE, FALSE);
+        gAgentCamera.setFocusOnAvatar(false, false);
 
         LLVector3d cam_pos = gAgentCamera.getCameraPositionGlobal();
 
@@ -276,14 +276,14 @@ void LLToolCamera::releaseMouse()
         LLToolMgr::getInstance()->clearTransientTool();
     }
 
-    mMouseSteering = FALSE;
-    mValidClickPoint = FALSE;
-    mOutsideSlopX = FALSE;
-    mOutsideSlopY = FALSE;
+    mMouseSteering = false;
+    mValidClickPoint = false;
+    mOutsideSlopX = false;
+    mOutsideSlopY = false;
 }
 
 
-BOOL LLToolCamera::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolCamera::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     // Claim that we're mousing up somewhere
     mMouseUpX = x;
@@ -301,7 +301,7 @@ BOOL LLToolCamera::handleMouseUp(S32 x, S32 y, MASK mask)
                 {
                     LLCoordGL mouse_pos;
                     LLVector3 focus_pos = gAgent.getPosAgentFromGlobal(gAgentCamera.getFocusGlobal());
-                    BOOL success = LLViewerCamera::getInstance()->projectPosAgentToScreen(focus_pos, mouse_pos);
+                    bool success = LLViewerCamera::getInstance()->projectPosAgentToScreen(focus_pos, mouse_pos);
                     if (success)
                     {
                         LLUI::getInstance()->setMousePositionScreen(mouse_pos.mX, mouse_pos.mY);
@@ -324,18 +324,18 @@ BOOL LLToolCamera::handleMouseUp(S32 x, S32 y, MASK mask)
         }
 
         // calls releaseMouse() internally
-        setMouseCapture(FALSE);
+        setMouseCapture(false);
     }
     else
     {
         releaseMouse();
     }
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLToolCamera::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolCamera::handleHover(S32 x, S32 y, MASK mask)
 {
     S32 dx = gViewerWindow->getCurrentMouseDX();
     S32 dy = gViewerWindow->getCurrentMouseDY();
@@ -347,12 +347,12 @@ BOOL LLToolCamera::handleHover(S32 x, S32 y, MASK mask)
 
         if (mAccumX >= SLOP_RANGE)
         {
-            mOutsideSlopX = TRUE;
+            mOutsideSlopX = true;
         }
 
         if (mAccumY >= SLOP_RANGE)
         {
-            mOutsideSlopY = TRUE;
+            mOutsideSlopY = true;
         }
     }
 
@@ -363,7 +363,7 @@ BOOL LLToolCamera::handleHover(S32 x, S32 y, MASK mask)
             LL_DEBUGS("UserInput") << "hover handled by LLToolFocus [invalid point]" << LL_ENDL;
             gViewerWindow->setCursor(UI_CURSOR_NO);
             gViewerWindow->showCursor();
-            return TRUE;
+            return true;
         }
 
         if (gCameraBtnOrbit ||
@@ -468,7 +468,7 @@ BOOL LLToolCamera::handleHover(S32 x, S32 y, MASK mask)
         gViewerWindow->setCursor(UI_CURSOR_TOOLZOOMIN);
     }
 
-    return TRUE;
+    return true;
 }
 
 
diff --git a/indra/newview/lltoolfocus.h b/indra/newview/lltoolfocus.h
index 29a548d635..c2460e7aa4 100644
--- a/indra/newview/lltoolfocus.h
+++ b/indra/newview/lltoolfocus.h
@@ -38,9 +38,9 @@ class LLToolCamera
     virtual ~LLToolCamera();
 public:
 
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask) override;
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleHover(S32 x, S32 y, MASK mask) override;
 
     virtual void    onMouseCaptureLost() override;
 
@@ -51,7 +51,7 @@ public:
 
     void setClickPickPending() { mClickPickPending = true; }
     static void pickCallback(const LLPickInfo& pick_info);
-    BOOL mouseSteerMode() { return mMouseSteering; }
+    bool mouseSteerMode() { return mMouseSteering; }
 
 protected:
     // called from handleMouseUp and onMouseCaptureLost to "let go"
@@ -63,20 +63,20 @@ protected:
     S32     mAccumY;
     S32     mMouseDownX;
     S32     mMouseDownY;
-    BOOL    mOutsideSlopX;
-    BOOL    mOutsideSlopY;
-    BOOL    mValidClickPoint;
+    bool    mOutsideSlopX;
+    bool    mOutsideSlopY;
+    bool    mValidClickPoint;
     bool    mClickPickPending;
-    BOOL    mValidSelection;
-    BOOL    mMouseSteering;
+    bool    mValidSelection;
+    bool    mMouseSteering;
     S32     mMouseUpX;  // needed for releaseMouse()
     S32     mMouseUpY;
     MASK    mMouseUpMask;
 };
 
 
-extern BOOL gCameraBtnOrbit;
-extern BOOL gCameraBtnPan;
-extern BOOL gCameraBtnZoom;
+extern bool gCameraBtnOrbit;
+extern bool gCameraBtnPan;
+extern bool gCameraBtnZoom;
 
 #endif
diff --git a/indra/newview/lltoolgrab.cpp b/indra/newview/lltoolgrab.cpp
index 59bfebafe4..f3ec655f00 100644
--- a/indra/newview/lltoolgrab.cpp
+++ b/indra/newview/lltoolgrab.cpp
@@ -62,10 +62,10 @@
 const S32 SLOP_DIST_SQ = 4;
 
 // Override modifier key behavior with these buttons
-BOOL gGrabBtnVertical = FALSE;
-BOOL gGrabBtnSpin = FALSE;
+bool gGrabBtnVertical = false;
+bool gGrabBtnSpin = false;
 LLTool* gGrabTransientTool = NULL;
-extern BOOL gDebugClicks;
+extern bool gDebugClicks;
 
 //
 // Methods
@@ -73,20 +73,20 @@ extern BOOL gDebugClicks;
 LLToolGrabBase::LLToolGrabBase( LLToolComposite* composite )
 :   LLTool( std::string("Grab"), composite ),
     mMode( GRAB_INACTIVE ),
-    mVerticalDragging( FALSE ),
-    mHitLand(FALSE),
+    mVerticalDragging( false ),
+    mHitLand(false),
     mLastMouseX(0),
     mLastMouseY(0),
     mAccumDeltaX(0),
     mAccumDeltaY(0),
-    mHasMoved( FALSE ),
-    mOutsideSlop(FALSE),
-    mDeselectedThisClick(FALSE),
+    mHasMoved( false ),
+    mOutsideSlop(false),
+    mDeselectedThisClick(false),
     mLastFace(0),
-    mSpinGrabbing( FALSE ),
+    mSpinGrabbing( false ),
     mSpinRotation(),
-    mClickedInMouselook( FALSE ),
-    mHideBuildHighlight(FALSE)
+    mClickedInMouselook( false ),
+    mHideBuildHighlight(false)
 { }
 
 LLToolGrabBase::~LLToolGrabBase()
@@ -103,19 +103,19 @@ void LLToolGrabBase::handleSelect()
         // in case we start from tools floater, we count any selection as valid
         mValidSelection = gFloaterTools->getVisible();
     }
-    gGrabBtnVertical = FALSE;
-    gGrabBtnSpin = FALSE;
+    gGrabBtnVertical = false;
+    gGrabBtnSpin = false;
 }
 
 void LLToolGrabBase::handleDeselect()
 {
     if( hasMouseCapture() )
     {
-        setMouseCapture( FALSE );
+        setMouseCapture( false );
     }
 
     // Make sure that temporary(invalid) selection won't pass anywhere except pie tool.
-    MASK override_mask = gKeyboard ? gKeyboard->currentMask(TRUE) : 0;
+    MASK override_mask = gKeyboard ? gKeyboard->currentMask(true) : 0;
     if (!mValidSelection && (override_mask != MASK_NONE || (gFloaterTools && gFloaterTools->getVisible())))
     {
         LLMenuGL::sMenuContainer->hideMenus();
@@ -124,17 +124,17 @@ void LLToolGrabBase::handleDeselect()
 
 }
 
-BOOL LLToolGrabBase::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLToolGrabBase::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if (gDebugClicks)
     {
         LL_INFOS() << "LLToolGrab handleDoubleClick (becoming mouseDown)" << LL_ENDL;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLToolGrabBase::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolGrabBase::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (gDebugClicks)
     {
@@ -147,7 +147,7 @@ BOOL LLToolGrabBase::handleMouseDown(S32 x, S32 y, MASK mask)
     if (!gAgent.leftButtonGrabbed() || ((mask & DEFAULT_GRAB_MASK) != 0 && !gAgentCamera.cameraMouselook()))
     {
         // can grab transparent objects (how touch event propagates, scripters rely on this)
-        gViewerWindow->pickAsync(x, y, mask, pickCallback, /*BOOL pick_transparent*/ TRUE);
+        gViewerWindow->pickAsync(x, y, mask, pickCallback, /*bool pick_transparent*/ true);
     }
     mClickedInMouselook = gAgentCamera.cameraMouselook();
 
@@ -163,7 +163,7 @@ BOOL LLToolGrabBase::handleMouseDown(S32 x, S32 y, MASK mask)
         // Todo: LLToolGrabBase probably shouldn't consume the event if there is nothing
         // to grab in Mouselook, it intercepts handling in scanMouse
     }
-    return TRUE;
+    return true;
 }
 
 void LLToolGrabBase::pickCallback(const LLPickInfo& pick_info)
@@ -171,22 +171,22 @@ void LLToolGrabBase::pickCallback(const LLPickInfo& pick_info)
     LLToolGrab::getInstance()->mGrabPick = pick_info;
     LLViewerObject  *objectp = pick_info.getObject();
 
-    BOOL extend_select = (pick_info.mKeyMask & MASK_SHIFT);
+    bool extend_select = (pick_info.mKeyMask & MASK_SHIFT);
 
     if (!extend_select && !LLSelectMgr::getInstance()->getSelection()->isEmpty())
     {
         LLSelectMgr::getInstance()->deselectAll();
-        LLToolGrab::getInstance()->mDeselectedThisClick = TRUE;
+        LLToolGrab::getInstance()->mDeselectedThisClick = true;
     }
     else
     {
-        LLToolGrab::getInstance()->mDeselectedThisClick = FALSE;
+        LLToolGrab::getInstance()->mDeselectedThisClick = false;
     }
 
     // if not over object, do nothing
     if (!objectp)
     {
-        LLToolGrab::getInstance()->setMouseCapture(TRUE);
+        LLToolGrab::getInstance()->setMouseCapture(true);
         LLToolGrab::getInstance()->mMode = GRAB_NOOBJECT;
         LLToolGrab::getInstance()->mGrabPick.mObjectID.setNull();
     }
@@ -196,7 +196,7 @@ void LLToolGrabBase::pickCallback(const LLPickInfo& pick_info)
     }
 }
 
-BOOL LLToolGrabBase::handleObjectHit(const LLPickInfo& info)
+bool LLToolGrabBase::handleObjectHit(const LLPickInfo& info)
 {
     mGrabPick = info;
     LLViewerObject* objectp = mGrabPick.getObject();
@@ -208,8 +208,8 @@ BOOL LLToolGrabBase::handleObjectHit(const LLPickInfo& info)
 
     if (NULL == objectp) // unexpected
     {
-        LL_WARNS() << "objectp was NULL; returning FALSE" << LL_ENDL;
-        return FALSE;
+        LL_WARNS() << "objectp was NULL; returning false" << LL_ENDL;
+        return false;
     }
 
     if (objectp->isAvatar())
@@ -219,16 +219,16 @@ BOOL LLToolGrabBase::handleObjectHit(const LLPickInfo& info)
             gBasicToolset->selectTool( gGrabTransientTool );
             gGrabTransientTool = NULL;
         }
-        return TRUE;
+        return true;
     }
 
-    setMouseCapture( TRUE );
+    setMouseCapture( true );
 
     // Grabs always start from the root
     // objectp = (LLViewerObject *)objectp->getRoot();
 
     LLViewerObject* parent = objectp->getRootEdit();
-    BOOL script_touch = (objectp->flagHandleTouch()) || (parent && parent->flagHandleTouch());
+    bool script_touch = (objectp->flagHandleTouch()) || (parent && parent->flagHandleTouch());
 
     // Clicks on scripted or physical objects are temporary grabs, so
     // not "Build mode"
@@ -291,8 +291,8 @@ BOOL LLToolGrabBase::handleObjectHit(const LLPickInfo& info)
     mLastMouseY = gViewerWindow->getCurrentMouseY();
     mAccumDeltaX = 0;
     mAccumDeltaY = 0;
-    mHasMoved = FALSE;
-    mOutsideSlop = FALSE;
+    mHasMoved = false;
+    mOutsideSlop = false;
 
     mVerticalDragging = (info.mKeyMask == MASK_VERTICAL) || gGrabBtnVertical;
 
@@ -325,7 +325,7 @@ BOOL LLToolGrabBase::handleObjectHit(const LLPickInfo& info)
         gGrabTransientTool = NULL;
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -336,7 +336,7 @@ void LLToolGrabBase::startSpin()
     {
         return;
     }
-    mSpinGrabbing = TRUE;
+    mSpinGrabbing = true;
 
     // Was saveSelectedObjectTransform()
     LLViewerObject *root = (LLViewerObject *)objectp->getRoot();
@@ -355,7 +355,7 @@ void LLToolGrabBase::startSpin()
 
 void LLToolGrabBase::stopSpin()
 {
-    mSpinGrabbing = FALSE;
+    mSpinGrabbing = false;
 
     LLViewerObject* objectp = mGrabPick.getObject();
     if (!objectp)
@@ -436,13 +436,13 @@ void LLToolGrabBase::startGrab()
 }
 
 
-BOOL LLToolGrabBase::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolGrabBase::handleHover(S32 x, S32 y, MASK mask)
 {
     if (!gViewerWindow->getLeftMouseDown())
     {
         gViewerWindow->setCursor(UI_CURSOR_TOOLGRAB);
-        setMouseCapture(FALSE);
-        return TRUE;
+        setMouseCapture(false);
+        return true;
     }
 
     // Do the right hover based on mode
@@ -470,7 +470,7 @@ BOOL LLToolGrabBase::handleHover(S32 x, S32 y, MASK mask)
     mLastMouseX = x;
     mLastMouseY = y;
 
-    return TRUE;
+    return true;
 }
 
 const F32 GRAB_SENSITIVITY_X = 0.0075f;
@@ -487,7 +487,7 @@ void LLToolGrabBase::handleHoverActive(S32 x, S32 y, MASK mask)
     if (objectp->isDead())
     {
         // Bail out of drag because object has been killed
-        setMouseCapture(FALSE);
+        setMouseCapture(false);
         return;
     }
 
@@ -499,12 +499,12 @@ void LLToolGrabBase::handleHoverActive(S32 x, S32 y, MASK mask)
     if ((mask == MASK_VERTICAL)
         || (gGrabBtnVertical && (mask != MASK_SPIN)))
     {
-        vertical_dragging = TRUE;
+        vertical_dragging = true;
     }
     else if ((mask == MASK_SPIN)
             || (gGrabBtnSpin && (mask != MASK_VERTICAL)))
     {
-        spin_grabbing = TRUE;
+        spin_grabbing = true;
     }
 
     //--------------------------------------------------
@@ -552,11 +552,11 @@ void LLToolGrabBase::handleHoverActive(S32 x, S32 y, MASK mask)
         S32 dist_sq = mAccumDeltaX * mAccumDeltaX + mAccumDeltaY * mAccumDeltaY;
         if (dist_sq > SLOP_DIST_SQ)
         {
-            mOutsideSlop = TRUE;
+            mOutsideSlop = true;
         }
 
         // mouse has moved outside center
-        mHasMoved = TRUE;
+        mHasMoved = true;
 
         if (mSpinGrabbing)
         {
@@ -628,7 +628,7 @@ void LLToolGrabBase::handleHoverActive(S32 x, S32 y, MASK mask)
 
             /* Snap to grid disabled for grab tool - very confusing
             // Handle snapping to grid, but only when the tool is formally selected.
-            BOOL snap_on = gSavedSettings.getBOOL("SnapEnabled");
+            bool snap_on = gSavedSettings.getBOOL("SnapEnabled");
             if (snap_on && !gGrabTransientTool)
             {
                 F64 snap_size = gSavedSettings.getF32("GridResolution");
@@ -741,7 +741,7 @@ void LLToolGrabBase::handleHoverActive(S32 x, S32 y, MASK mask)
                 // force focus to point in space where we were looking previously
                 // Example of use: follow cam scripts shouldn't affect you when movng objects arouns
                 gAgentCamera.setFocusGlobal(gAgentCamera.calcFocusPositionTargetGlobal(), LLUUID::null);
-                gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+                gAgentCamera.setFocusOnAvatar(false, ANIMATE);
             }
         }
         else
@@ -764,7 +764,7 @@ void LLToolGrabBase::handleHoverNonPhysical(S32 x, S32 y, MASK mask)
     if (objectp->isDead())
     {
         // Bail out of drag because object has been killed
-        setMouseCapture(FALSE);
+        setMouseCapture(false);
         return;
     }
 
@@ -782,7 +782,7 @@ void LLToolGrabBase::handleHoverNonPhysical(S32 x, S32 y, MASK mask)
 
     LLVector3 grab_pos_region(0,0,0);
 
-    const BOOL SUPPORT_LLDETECTED_GRAB = TRUE;
+    const bool SUPPORT_LLDETECTED_GRAB = true;
     if (SUPPORT_LLDETECTED_GRAB)
     {
         //--------------------------------------------------
@@ -790,13 +790,13 @@ void LLToolGrabBase::handleHoverNonPhysical(S32 x, S32 y, MASK mask)
         //--------------------------------------------------
         if (!(mask == MASK_VERTICAL) && !gGrabBtnVertical)
         {
-            mVerticalDragging = FALSE;
+            mVerticalDragging = false;
         }
 
         else if ((gGrabBtnVertical && (mask != MASK_SPIN))
                 || (mask == MASK_VERTICAL))
         {
-            mVerticalDragging = TRUE;
+            mVerticalDragging = true;
         }
 
         S32 dx = x - mLastMouseX;
@@ -810,11 +810,11 @@ void LLToolGrabBase::handleHoverNonPhysical(S32 x, S32 y, MASK mask)
             S32 dist_sq = mAccumDeltaX * mAccumDeltaX + mAccumDeltaY * mAccumDeltaY;
             if (dist_sq > SLOP_DIST_SQ)
             {
-                mOutsideSlop = TRUE;
+                mOutsideSlop = true;
             }
 
             // mouse has moved
-            mHasMoved = TRUE;
+            mHasMoved = true;
 
             //------------------------------------------------------
             // Handle grabbing
@@ -853,7 +853,7 @@ void LLToolGrabBase::handleHoverNonPhysical(S32 x, S32 y, MASK mask)
 
     // only send message if something has changed since last message
 
-    BOOL changed_since_last_update = FALSE;
+    bool changed_since_last_update = false;
 
     // test if touch data needs to be updated
     if ((pick.mObjectFace != mLastFace) ||
@@ -864,7 +864,7 @@ void LLToolGrabBase::handleHoverNonPhysical(S32 x, S32 y, MASK mask)
         (pick.mBinormal != mLastBinormal) ||
         (grab_pos_region != mLastGrabPos))
     {
-        changed_since_last_update = TRUE;
+        changed_since_last_update = true;
     }
 
     if (changed_since_last_update)
@@ -935,7 +935,7 @@ void LLToolGrabBase::handleHoverFailed(S32 x, S32 y, MASK mask)
         S32 dist_sq = (x-mGrabPick.mMousePt.mX) * (x-mGrabPick.mMousePt.mX) + (y-mGrabPick.mMousePt.mY) * (y-mGrabPick.mMousePt.mY);
         if( mOutsideSlop || dist_sq > SLOP_DIST_SQ )
         {
-            mOutsideSlop = TRUE;
+            mOutsideSlop = true;
 
             switch( mMode )
             {
@@ -964,7 +964,7 @@ void LLToolGrabBase::handleHoverFailed(S32 x, S32 y, MASK mask)
 
 
 
-BOOL LLToolGrabBase::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolGrabBase::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     LLTool::handleMouseUp(x, y, mask);
 
@@ -980,14 +980,14 @@ BOOL LLToolGrabBase::handleMouseUp(S32 x, S32 y, MASK mask)
 
     if( hasMouseCapture() )
     {
-        setMouseCapture( FALSE );
+        setMouseCapture( false );
     }
 
     mMode = GRAB_INACTIVE;
 
     if(mClickedInMouselook && !gAgentCamera.cameraMouselook())
     {
-        mClickedInMouselook = FALSE;
+        mClickedInMouselook = false;
     }
     else
     {
@@ -1001,14 +1001,14 @@ BOOL LLToolGrabBase::handleMouseUp(S32 x, S32 y, MASK mask)
 
     //gAgent.setObjectTracking(gSavedSettings.getBOOL("TrackFocusObject"));
 
-    return TRUE;
+    return true;
 }
 
 void LLToolGrabBase::stopEditing()
 {
     if( hasMouseCapture() )
     {
-        setMouseCapture( FALSE );
+        setMouseCapture( false );
     }
 }
 
@@ -1057,7 +1057,7 @@ void LLToolGrabBase::onMouseCaptureLost()
 
     mMode = GRAB_INACTIVE;
 
-    mHideBuildHighlight = FALSE;
+    mHideBuildHighlight = false;
 
     mGrabPick.mObjectID.setNull();
 
@@ -1096,7 +1096,7 @@ void LLToolGrabBase::stopGrab()
     case GRAB_NONPHYSICAL:
     case GRAB_LOCKED:
         send_ObjectDeGrab_message(objectp, pick);
-        mVerticalDragging = FALSE;
+        mVerticalDragging = false;
         break;
 
     case GRAB_NOOBJECT:
@@ -1106,7 +1106,7 @@ void LLToolGrabBase::stopGrab()
         break;
     }
 
-    mHideBuildHighlight = FALSE;
+    mHideBuildHighlight = false;
 }
 
 
@@ -1116,7 +1116,7 @@ void LLToolGrabBase::draw()
 void LLToolGrabBase::render()
 { }
 
-BOOL LLToolGrabBase::isEditing()
+bool LLToolGrabBase::isEditing()
 {
     return (mGrabPick.getObject().notNull());
 }
diff --git a/indra/newview/lltoolgrab.h b/indra/newview/lltoolgrab.h
index 65a1f3cbdb..7806cbc24f 100644
--- a/indra/newview/lltoolgrab.h
+++ b/indra/newview/lltoolgrab.h
@@ -58,10 +58,10 @@ public:
     LLToolGrabBase(LLToolComposite* composite=NULL);
     ~LLToolGrabBase();
 
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    /*virtual*/ BOOL    handleDoubleClick(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleDoubleClick(S32 x, S32 y, MASK mask);
     /*virtual*/ void    render();       // 3D elements
     /*virtual*/ void    draw();         // 2D elements
 
@@ -70,21 +70,21 @@ public:
 
     virtual LLViewerObject* getEditingObject();
     virtual LLVector3d      getEditingPointGlobal();
-    virtual BOOL            isEditing();
+    virtual bool            isEditing();
     virtual void            stopEditing();
 
     virtual void            onMouseCaptureLost();
 
-    BOOL            hasGrabOffset()  { return TRUE; }   // HACK
+    bool            hasGrabOffset()  { return true; }   // HACK
     LLVector3       getGrabOffset(S32 x, S32 y);        // HACK
 
     // Capture the mouse and start grabbing.
-    BOOL            handleObjectHit(const LLPickInfo& info);
+    bool            handleObjectHit(const LLPickInfo& info);
 
     // Certain grabs should not highlight the "Build" toolbar button
-    BOOL getHideBuildHighlight() { return mHideBuildHighlight; }
+    bool getHideBuildHighlight() { return mHideBuildHighlight; }
 
-    void setClickedInMouselook(BOOL is_clickedInMouselook) {mClickedInMouselook = is_clickedInMouselook;}
+    void setClickedInMouselook(bool is_clickedInMouselook) {mClickedInMouselook = is_clickedInMouselook;}
 
     static void     pickCallback(const LLPickInfo& pick_info);
 private:
@@ -106,9 +106,9 @@ private:
 
     EGrabMode       mMode;
 
-    BOOL            mVerticalDragging;
+    bool            mVerticalDragging;
 
-    BOOL            mHitLand;
+    bool            mHitLand;
 
     LLTimer         mGrabTimer;                     // send simulator time between hover movements
 
@@ -124,10 +124,10 @@ private:
     S32             mLastMouseY;
     S32             mAccumDeltaX;   // since cursor hidden, how far have you moved?
     S32             mAccumDeltaY;
-    BOOL            mHasMoved;      // has mouse moved off center at all?
-    BOOL            mOutsideSlop;   // has mouse moved outside center 5 pixels?
-    BOOL            mDeselectedThisClick;
-    BOOL            mValidSelection;
+    bool            mHasMoved;      // has mouse moved off center at all?
+    bool            mOutsideSlop;   // has mouse moved outside center 5 pixels?
+    bool            mDeselectedThisClick;
+    bool            mValidSelection;
 
     S32             mLastFace;
     LLVector2       mLastUVCoords;
@@ -138,12 +138,12 @@ private:
     LLVector3       mLastGrabPos;
 
 
-    BOOL            mSpinGrabbing;
+    bool            mSpinGrabbing;
     LLQuaternion    mSpinRotation;
 
-    BOOL            mHideBuildHighlight;
+    bool            mHideBuildHighlight;
 
-    BOOL            mClickedInMouselook;
+    bool            mClickedInMouselook;
 };
 
 /// This is the LLSingleton instance of LLToolGrab.
@@ -152,8 +152,8 @@ class LLToolGrab : public LLToolGrabBase, public LLSingleton<LLToolGrab>
     LLSINGLETON_EMPTY_CTOR(LLToolGrab);
 };
 
-extern BOOL gGrabBtnVertical;
-extern BOOL gGrabBtnSpin;
+extern bool gGrabBtnVertical;
+extern bool gGrabBtnSpin;
 extern LLTool* gGrabTransientTool;
 
 #endif  // LL_TOOLGRAB_H
diff --git a/indra/newview/lltoolgun.cpp b/indra/newview/lltoolgun.cpp
index a79f287503..b60cb96eb5 100644
--- a/indra/newview/lltoolgun.cpp
+++ b/indra/newview/lltoolgun.cpp
@@ -48,7 +48,7 @@
 
 LLToolGun::LLToolGun( LLToolComposite* composite )
 :   LLTool( std::string("gun"), composite ),
-        mIsSelected(FALSE)
+        mIsSelected(false)
 {
 }
 
@@ -56,19 +56,19 @@ void LLToolGun::handleSelect()
 {
     gViewerWindow->hideCursor();
     gViewerWindow->moveCursorToCenter();
-    gViewerWindow->getWindow()->setMouseClipping(TRUE);
-    mIsSelected = TRUE;
+    gViewerWindow->getWindow()->setMouseClipping(true);
+    mIsSelected = true;
 }
 
 void LLToolGun::handleDeselect()
 {
     gViewerWindow->moveCursorToCenter();
     gViewerWindow->showCursor();
-    gViewerWindow->getWindow()->setMouseClipping(FALSE);
-    mIsSelected = FALSE;
+    gViewerWindow->getWindow()->setMouseClipping(false);
+    mIsSelected = false;
 }
 
-BOOL LLToolGun::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolGun::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     gGrabTransientTool = this;
     LLToolMgr::getInstance()->getCurrentToolset()->selectTool( LLToolGrab::getInstance() );
@@ -76,7 +76,7 @@ BOOL LLToolGun::handleMouseDown(S32 x, S32 y, MASK mask)
     return LLToolGrab::getInstance()->handleMouseDown(x, y, mask);
 }
 
-BOOL LLToolGun::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolGun::handleHover(S32 x, S32 y, MASK mask)
 {
     if( gAgentCamera.cameraMouselook() && mIsSelected )
     {
@@ -133,7 +133,7 @@ BOOL LLToolGun::handleHover(S32 x, S32 y, MASK mask)
     // HACK to avoid assert: error checking system makes sure that the cursor is set during every handleHover.  This is actually a no-op since the cursor is hidden.
     gViewerWindow->setCursor(UI_CURSOR_ARROW);
 
-    return TRUE;
+    return true;
 }
 
 void LLToolGun::draw()
diff --git a/indra/newview/lltoolgun.h b/indra/newview/lltoolgun.h
index 0220d5f327..f9bb9bb39a 100644
--- a/indra/newview/lltoolgun.h
+++ b/indra/newview/lltoolgun.h
@@ -41,13 +41,13 @@ public:
     virtual void    handleSelect();
     virtual void    handleDeselect();
 
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
 
     virtual LLTool* getOverrideTool(MASK mask) { return NULL; }
-    virtual BOOL    clipMouseWhenDown()     { return FALSE; }
+    virtual bool    clipMouseWhenDown()     { return false; }
 private:
-    BOOL mIsSelected;
+    bool mIsSelected;
 };
 
 #endif
diff --git a/indra/newview/lltoolindividual.cpp b/indra/newview/lltoolindividual.cpp
index 50b4cb0c93..8962c55273 100644
--- a/indra/newview/lltoolindividual.cpp
+++ b/indra/newview/lltoolindividual.cpp
@@ -66,10 +66,10 @@ LLToolIndividual::~LLToolIndividual()
 {
 }
 
-BOOL LLToolIndividual::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolIndividual::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     gViewerWindow->pickAsync(x, y, mask, pickCallback);
-    return TRUE;
+    return true;
 }
 
 void LLToolIndividual::pickCallback(const LLPickInfo& pick_info)
@@ -82,26 +82,26 @@ void LLToolIndividual::pickCallback(const LLPickInfo& pick_info)
     }
 }
 
-BOOL LLToolIndividual::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLToolIndividual::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if(!LLSelectMgr::getInstance()->getSelection()->isEmpty())
     {
         // You should already have an object selected from the mousedown.
         // If so, show its inventory.
         LLFloaterReg::showInstance("build", "Content");
-        return TRUE;
+        return true;
     }
     else
     {
         // Nothing selected means the first mouse click was probably
         // bad, so try again.
-        return FALSE;
+        return false;
     }
 }
 
 void LLToolIndividual::handleSelect()
 {
-    const BOOL children_ok = TRUE;
+    const bool children_ok = true;
     LLViewerObject* obj = LLSelectMgr::getInstance()->getSelection()->getFirstRootObject(children_ok);
     LLSelectMgr::getInstance()->deselectAll();
     if(obj)
diff --git a/indra/newview/lltoolindividual.h b/indra/newview/lltoolindividual.h
index 8373606e32..baf687d183 100644
--- a/indra/newview/lltoolindividual.h
+++ b/indra/newview/lltoolindividual.h
@@ -43,8 +43,8 @@ class LLToolIndividual : public LLTool, public LLSingleton<LLToolIndividual>
     virtual ~LLToolIndividual();
 public:
 
-    virtual BOOL handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    virtual bool handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool handleDoubleClick(S32 x, S32 y, MASK mask) override;
     virtual void handleSelect() override;
 
     static void pickCallback(const LLPickInfo& pick_info);
diff --git a/indra/newview/lltoolmgr.cpp b/indra/newview/lltoolmgr.cpp
index b1f895317a..07963a7bed 100644
--- a/indra/newview/lltoolmgr.cpp
+++ b/indra/newview/lltoolmgr.cpp
@@ -102,12 +102,12 @@ LLToolMgr::LLToolMgr()
 
 void LLToolMgr::initTools()
 {
-    static BOOL initialized = FALSE;
+    static bool initialized = false;
     if(initialized)
     {
         return;
     }
-    initialized = TRUE;
+    initialized = true;
     gBasicToolset->addTool( LLToolPie::getInstance() );
     gBasicToolset->addTool( LLToolCamera::getInstance() );
     gCameraToolset->addTool( LLToolCamera::getInstance() );
@@ -143,14 +143,15 @@ LLToolMgr::~LLToolMgr()
     gToolNull = NULL;
 }
 
-BOOL LLToolMgr::usingTransientTool()
+bool LLToolMgr::usingTransientTool()
 {
-    return mTransientTool ? TRUE : FALSE;
+    return mTransientTool != nullptr;
 }
 
 void LLToolMgr::setCurrentToolset(LLToolset* current)
 {
-    if (!current) return;
+    if (!current)
+        return;
 
     // switching toolsets?
     if (current != mCurrentToolset)
@@ -164,6 +165,7 @@ void LLToolMgr::setCurrentToolset(LLToolset* current)
         // select first tool of new toolset only if toolset changed
         mCurrentToolset->selectFirstTool();
     }
+
     // update current tool based on new toolset
     setCurrentTool( mCurrentToolset->getSelectedTool() );
 }
@@ -188,7 +190,7 @@ void LLToolMgr::setCurrentTool( LLTool* tool )
 
 LLTool* LLToolMgr::getCurrentTool()
 {
-    MASK override_mask = gKeyboard ? gKeyboard->currentMask(TRUE) : 0;
+    MASK override_mask = gKeyboard ? gKeyboard->currentMask(true) : 0;
 
     LLTool* cur_tool = NULL;
     // always use transient tools if available
@@ -301,7 +303,7 @@ void LLToolMgr::toggleBuildMode(const LLSD& sdname)
             if (gAgentCamera.getFocusOnAvatar())
             {
                 // zoom in if we're looking at the avatar
-                gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+                gAgentCamera.setFocusOnAvatar(false, ANIMATE);
                 gAgentCamera.setFocusGlobal(gAgent.getPositionGlobal() + 2.0 * LLVector3d(gAgent.getAtAxis()));
                 gAgentCamera.cameraZoomIn(0.666f);
                 gAgentCamera.cameraOrbitOver( 30.f * DEG_TO_RAD );
@@ -459,7 +461,7 @@ void LLToolset::selectToolByIndex( S32 index )
     }
 }
 
-BOOL LLToolset::isToolSelected( S32 index )
+bool LLToolset::isToolSelected( S32 index )
 {
     LLTool *tool = (index >= 0 && index < (S32)mToolList.size()) ? mToolList[index] : NULL;
     return (tool == mSelectedTool);
diff --git a/indra/newview/lltoolmgr.h b/indra/newview/lltoolmgr.h
index fd7d063740..6cfdbaac06 100644
--- a/indra/newview/lltoolmgr.h
+++ b/indra/newview/lltoolmgr.h
@@ -64,7 +64,7 @@ public:
 
     void            setTransientTool(LLTool* tool);
     void            clearTransientTool();
-    BOOL            usingTransientTool();
+    bool            usingTransientTool();
 
     void            setCurrentToolset(LLToolset* current);
     LLToolset*      getCurrentToolset();
@@ -106,7 +106,7 @@ public:
 
     void            handleScrollWheel(S32 clicks);
 
-    BOOL            isToolSelected( S32 index );
+    bool            isToolSelected( S32 index );
 
     void            setShowFloaterTools(bool pShowFloaterTools) {mIsShowFloaterTools = pShowFloaterTools;};
     bool            isShowFloaterTools() const                  {return mIsShowFloaterTools;};
diff --git a/indra/newview/lltoolmorph.cpp b/indra/newview/lltoolmorph.cpp
index fa55c8ed9a..b3871a6d6c 100644
--- a/indra/newview/lltoolmorph.cpp
+++ b/indra/newview/lltoolmorph.cpp
@@ -62,7 +62,7 @@
 
 //static
 LLVisualParamHint::instance_list_t LLVisualParamHint::sInstances;
-BOOL LLVisualParamReset::sDirty = FALSE;
+bool LLVisualParamReset::sDirty = false;
 
 //-----------------------------------------------------------------------------
 // LLVisualParamHint()
@@ -78,14 +78,14 @@ LLVisualParamHint::LLVisualParamHint(
     F32 param_weight,
     LLJoint* jointp)
     :
-    LLViewerDynamicTexture(width, height, 3, LLViewerDynamicTexture::ORDER_MIDDLE, TRUE ),
-    mNeedsUpdate( TRUE ),
-    mIsVisible( FALSE ),
+    LLViewerDynamicTexture(width, height, 3, LLViewerDynamicTexture::ORDER_MIDDLE, true ),
+    mNeedsUpdate( true ),
+    mIsVisible( false ),
     mJointMesh( mesh ),
     mVisualParam( param ),
     mWearablePtr( wearable ),
     mVisualParamWeight( param_weight ),
-    mAllowsUpdates( TRUE ),
+    mAllowsUpdates( true ),
     mDelayFrames( 0 ),
     mRect( pos_x, pos_y + height, pos_x + width, pos_y ),
     mLastParamWeight(0.f),
@@ -128,30 +128,30 @@ void LLVisualParamHint::requestHintUpdates( LLVisualParamHint* exception1, LLVis
         {
             if( instance->mAllowsUpdates )
             {
-                instance->mNeedsUpdate = TRUE;
+                instance->mNeedsUpdate = true;
                 instance->mDelayFrames = delay_frames;
                 delay_frames++;
             }
             else
             {
-                instance->mNeedsUpdate = TRUE;
+                instance->mNeedsUpdate = true;
                 instance->mDelayFrames = 0;
             }
         }
     }
 }
 
-BOOL LLVisualParamHint::needsRender()
+bool LLVisualParamHint::needsRender()
 {
     return mNeedsUpdate && mDelayFrames-- <= 0 && !gAgentAvatarp->getIsAppearanceAnimating() && mAllowsUpdates;
 }
 
-void LLVisualParamHint::preRender(BOOL clear_depth)
+void LLVisualParamHint::preRender(bool clear_depth)
 {
     LLViewerWearable* wearable = (LLViewerWearable*)mWearablePtr;
     if (wearable)
     {
-        wearable->setVolatile(TRUE);
+        wearable->setVolatile(true);
     }
     mLastParamWeight = mVisualParam->getWeight();
     mWearablePtr->setVisualParamWeight(mVisualParam->getID(), mVisualParamWeight);
@@ -179,9 +179,9 @@ void LLVisualParamHint::preRender(BOOL clear_depth)
 //-----------------------------------------------------------------------------
 // render()
 //-----------------------------------------------------------------------------
-BOOL LLVisualParamHint::render()
+bool LLVisualParamHint::render()
 {
-    LLVisualParamReset::sDirty = TRUE;
+    LLVisualParamReset::sDirty = true;
 
     gGL.pushUIMatrix();
     gGL.loadUIIdentity();
@@ -198,7 +198,7 @@ BOOL LLVisualParamHint::render()
     gUIProgram.bind();
 
     LLGLSUIDefault gls_ui;
-    //LLGLState::verify(TRUE);
+    //LLGLState::verify(true);
     mBackgroundp->draw(0, 0, mFullWidth, mFullHeight);
 
     gGL.matrixMode(LLRender::MM_PROJECTION);
@@ -207,8 +207,8 @@ BOOL LLVisualParamHint::render()
     gGL.matrixMode(LLRender::MM_MODELVIEW);
     gGL.popMatrix();
 
-    mNeedsUpdate = FALSE;
-    mIsVisible = TRUE;
+    mNeedsUpdate = false;
+    mIsVisible = true;
 
     LLQuaternion avatar_rotation;
     LLJoint* root_joint = gAgentAvatarp->getRootJoint();
@@ -244,7 +244,7 @@ BOOL LLVisualParamHint::render()
         LLVector3::z_axis,  // up
         target_pos );       // point of interest
 
-    LLViewerCamera::getInstance()->setPerspective(FALSE, mOrigin.mX, mOrigin.mY, mFullWidth, mFullHeight, FALSE);
+    LLViewerCamera::getInstance()->setPerspective(false, mOrigin.mX, mOrigin.mY, mFullWidth, mFullHeight, false);
 
     if (gAgentAvatarp->mDrawable.notNull())
     {
@@ -261,7 +261,7 @@ BOOL LLVisualParamHint::render()
     LLViewerWearable* wearable = (LLViewerWearable*)mWearablePtr;
     if (wearable)
     {
-        wearable->setVolatile(FALSE);
+        wearable->setVolatile(false);
     }
 
     gAgentAvatarp->updateVisualParams();
@@ -269,7 +269,7 @@ BOOL LLVisualParamHint::render()
     mGLTexturep->setGLTextureCreated(true);
     gGL.popUIMatrix();
 
-    return TRUE;
+    return true;
 }
 
 
@@ -304,7 +304,7 @@ void LLVisualParamHint::draw(F32 alpha)
 //-----------------------------------------------------------------------------
 // LLVisualParamReset()
 //-----------------------------------------------------------------------------
-LLVisualParamReset::LLVisualParamReset() : LLViewerDynamicTexture(1, 1, 1, ORDER_RESET, FALSE)
+LLVisualParamReset::LLVisualParamReset() : LLViewerDynamicTexture(1, 1, 1, ORDER_RESET, false)
 {
 }
 
@@ -317,15 +317,15 @@ S8 LLVisualParamReset::getType() const
 //-----------------------------------------------------------------------------
 // render()
 //-----------------------------------------------------------------------------
-BOOL LLVisualParamReset::render()
+bool LLVisualParamReset::render()
 {
     if (sDirty)
     {
         gAgentAvatarp->updateComposites();
         gAgentAvatarp->updateVisualParams();
         gAgentAvatarp->updateGeometry(gAgentAvatarp->mDrawable);
-        sDirty = FALSE;
+        sDirty = false;
     }
 
-    return FALSE;
+    return false;
 }
diff --git a/indra/newview/lltoolmorph.h b/indra/newview/lltoolmorph.h
index 5bfb4e694f..fb62ba9bba 100644
--- a/indra/newview/lltoolmorph.h
+++ b/indra/newview/lltoolmorph.h
@@ -63,18 +63,18 @@ public:
 
     /*virtual*/ S8 getType() const ;
 
-    BOOL                    needsRender();
-    void                    preRender(BOOL clear_depth);
-    BOOL                    render();
-    void                    requestUpdate( S32 delay_frames ) {mNeedsUpdate = TRUE; mDelayFrames = delay_frames; }
+    bool                    needsRender();
+    void                    preRender(bool clear_depth);
+    bool                    render();
+    void                    requestUpdate( S32 delay_frames ) {mNeedsUpdate = true; mDelayFrames = delay_frames; }
     void                    setUpdateDelayFrames( S32 delay_frames ) { mDelayFrames = delay_frames; }
     void                    draw(F32 alpha);
 
     LLViewerVisualParam*    getVisualParam() { return mVisualParam; }
     F32                     getVisualParamWeight() { return mVisualParamWeight; }
-    BOOL                    getVisible() { return mIsVisible; }
+    bool                    getVisible() { return mIsVisible; }
 
-    void                    setAllowsUpdates( BOOL b ) { mAllowsUpdates = b; }
+    void                    setAllowsUpdates( bool b ) { mAllowsUpdates = b; }
 
     const LLRect&           getRect()   { return mRect; }
 
@@ -82,13 +82,13 @@ public:
     static void             requestHintUpdates( LLVisualParamHint* exception1 = NULL, LLVisualParamHint* exception2 = NULL );
 
 protected:
-    BOOL                    mNeedsUpdate;       // does this texture need to be re-rendered?
-    BOOL                    mIsVisible;         // is this distortion hint visible?
+    bool                    mNeedsUpdate;       // does this texture need to be re-rendered?
+    bool                    mIsVisible;         // is this distortion hint visible?
     LLViewerJointMesh*      mJointMesh;         // mesh that this distortion applies to
     LLViewerVisualParam*    mVisualParam;       // visual param applied by this hint
     LLWearable*             mWearablePtr;       // wearable we're editing
     F32                     mVisualParamWeight;     // weight for this visual parameter
-    BOOL                    mAllowsUpdates;     // updates are blocked unless this is true
+    bool                    mAllowsUpdates;     // updates are blocked unless this is true
     S32                     mDelayFrames;       // updates are blocked for this many frames
     LLRect                  mRect;
     F32                     mLastParamWeight;
@@ -107,10 +107,10 @@ protected:
     /*virtual */ ~LLVisualParamReset(){}
 public:
     LLVisualParamReset();
-    /*virtual */ BOOL render();
+    /*virtual */ bool render();
     /*virtual*/ S8 getType() const ;
 
-    static BOOL sDirty;
+    static bool sDirty;
 };
 
 #endif
diff --git a/indra/newview/lltoolobjpicker.cpp b/indra/newview/lltoolobjpicker.cpp
index b91ab03ab9..20089b15a3 100644
--- a/indra/newview/lltoolobjpicker.cpp
+++ b/indra/newview/lltoolobjpicker.cpp
@@ -47,18 +47,18 @@
 
 LLToolObjPicker::LLToolObjPicker()
 :   LLTool( std::string("ObjPicker"), NULL ),
-    mPicked( FALSE ),
+    mPicked( false ),
     mHitObjectID( LLUUID::null ),
     mExitCallback( NULL ),
     mExitCallbackData( NULL )
 { }
 
 
-// returns TRUE if an object was selected
-BOOL LLToolObjPicker::handleMouseDown(S32 x, S32 y, MASK mask)
+// returns true if an object was selected
+bool LLToolObjPicker::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     LLRootView* viewp = gViewerWindow->getRootView();
-    BOOL handled = viewp->handleMouseDown(x, y, mask);
+    bool handled = viewp->handleMouseDown(x, y, mask);
 
     mHitObjectID.setNull();
 
@@ -66,13 +66,13 @@ BOOL LLToolObjPicker::handleMouseDown(S32 x, S32 y, MASK mask)
     {
         // didn't click in any UI object, so must have clicked in the world
         gViewerWindow->pickAsync(x, y, mask, pickCallback);
-        handled = TRUE;
+        handled = true;
     }
     else
     {
         if (hasMouseCapture())
         {
-            setMouseCapture(FALSE);
+            setMouseCapture(false);
         }
         else
         {
@@ -93,10 +93,10 @@ void LLToolObjPicker::pickCallback(const LLPickInfo& pick_info)
 }
 
 
-BOOL LLToolObjPicker::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolObjPicker::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     LLView* viewp = gViewerWindow->getRootView();
-    BOOL handled = viewp->handleHover(x, y, mask);
+    bool handled = viewp->handleHover(x, y, mask);
     if (handled)
     {
         // let UI handle this
@@ -105,7 +105,7 @@ BOOL LLToolObjPicker::handleMouseUp(S32 x, S32 y, MASK mask)
     LLTool::handleMouseUp(x, y, mask);
     if (hasMouseCapture())
     {
-        setMouseCapture(FALSE);
+        setMouseCapture(false);
     }
     else
     {
@@ -115,10 +115,10 @@ BOOL LLToolObjPicker::handleMouseUp(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLToolObjPicker::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolObjPicker::handleHover(S32 x, S32 y, MASK mask)
 {
     LLView *viewp = gViewerWindow->getRootView();
-    BOOL handled = viewp->handleHover(x, y, mask);
+    bool handled = viewp->handleHover(x, y, mask);
     if (!handled)
     {
         // Used to do pick on hover.  Now we just always display the cursor.
@@ -142,7 +142,7 @@ void LLToolObjPicker::onMouseCaptureLost()
         mExitCallbackData = NULL;
     }
 
-    mPicked = FALSE;
+    mPicked = false;
     mHitObjectID.setNull();
 }
 
@@ -157,7 +157,7 @@ void LLToolObjPicker::setExitCallback(void (*callback)(void *), void *callback_d
 void LLToolObjPicker::handleSelect()
 {
     LLTool::handleSelect();
-    setMouseCapture(TRUE);
+    setMouseCapture(true);
 }
 
 // virtual
@@ -166,7 +166,7 @@ void LLToolObjPicker::handleDeselect()
     if (hasMouseCapture())
     {
         LLTool::handleDeselect();
-        setMouseCapture(FALSE);
+        setMouseCapture(false);
     }
 }
 
diff --git a/indra/newview/lltoolobjpicker.h b/indra/newview/lltoolobjpicker.h
index ceeb45c74e..3420541a31 100644
--- a/indra/newview/lltoolobjpicker.h
+++ b/indra/newview/lltoolobjpicker.h
@@ -38,9 +38,9 @@ class LLToolObjPicker : public LLTool, public LLSingleton<LLToolObjPicker>
     LLSINGLETON(LLToolObjPicker);
 public:
 
-    virtual BOOL        handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleMouseUp(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleHover(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleMouseUp(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleHover(S32 x, S32 y, MASK mask) override;
 
     virtual void        handleSelect() override;
     virtual void        handleDeselect() override;
@@ -54,7 +54,7 @@ public:
     static void         pickCallback(const LLPickInfo& pick_info);
 
 protected:
-    BOOL                mPicked;
+    bool                mPicked;
     LLUUID              mHitObjectID;
     void                (*mExitCallback)(void *callback_data);
     void                *mExitCallbackData;
diff --git a/indra/newview/lltoolpie.cpp b/indra/newview/lltoolpie.cpp
index b8cfc5fbe2..531e657a1e 100644
--- a/indra/newview/lltoolpie.cpp
+++ b/indra/newview/lltoolpie.cpp
@@ -73,7 +73,7 @@
 #include "pipeline.h"   // setHighlightObject
 #include "lluiusage.h"
 
-extern BOOL gDebugClicks;
+extern bool gDebugClicks;
 
 static void handle_click_action_play();
 static void handle_click_action_open_media(LLPointer<LLViewerObject> objectp);
@@ -86,15 +86,15 @@ LLToolPie::LLToolPie()
     mMouseSteerX(-1),
     mMouseSteerY(-1),
     mClickAction(0),
-    mClickActionBuyEnabled( TRUE ),
-    mClickActionPayEnabled( TRUE ),
+    mClickActionBuyEnabled( true ),
+    mClickActionPayEnabled( true ),
     mDoubleClickTimer()
 {
 }
 
-BOOL LLToolPie::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, BOOL down)
+bool LLToolPie::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, bool down)
 {
-    BOOL result = LLMouseHandler::handleAnyMouseClick(x, y, mask, clicktype, down);
+    bool result = LLMouseHandler::handleAnyMouseClick(x, y, mask, clicktype, down);
 
     // This override DISABLES the keyboard focus reset that LLTool::handleAnyMouseClick adds.
     // LLToolPie will do the right thing in its pick callback.
@@ -102,20 +102,20 @@ BOOL LLToolPie::handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType cli
     return result;
 }
 
-BOOL LLToolPie::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolPie::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     if (mDoubleClickTimer.getStarted())
     {
         mDoubleClickTimer.stop();
     }
 
-    mMouseOutsideSlop = FALSE;
+    mMouseOutsideSlop = false;
     mMouseDownX = x;
     mMouseDownY = y;
     LLTimer pick_timer;
-    BOOL pick_rigged = false; //gSavedSettings.getBOOL("AnimatedObjectsAllowLeftClick");
-    LLPickInfo transparent_pick = gViewerWindow->pickImmediate(x, y, TRUE /*includes transparent*/, pick_rigged, FALSE, TRUE, FALSE);
-    LLPickInfo visible_pick = gViewerWindow->pickImmediate(x, y, FALSE, pick_rigged);
+    bool pick_rigged = false; //gSavedSettings.getBOOL("AnimatedObjectsAllowLeftClick");
+    LLPickInfo transparent_pick = gViewerWindow->pickImmediate(x, y, true /*includes transparent*/, pick_rigged, false, true, false);
+    LLPickInfo visible_pick = gViewerWindow->pickImmediate(x, y, false, pick_rigged);
     LLViewerObject *transp_object = transparent_pick.getObject();
     LLViewerObject *visible_object = visible_pick.getObject();
 
@@ -179,16 +179,16 @@ BOOL LLToolPie::handleMouseDown(S32 x, S32 y, MASK mask)
 
 // Spawn context menus on right mouse down so you can drag over and select
 // an item.
-BOOL LLToolPie::handleRightMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolPie::handleRightMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL pick_reflection_probe = gSavedSettings.getBOOL("SelectReflectionProbes");
+    bool pick_reflection_probe = gSavedSettings.getBOOL("SelectReflectionProbes");
 
     // don't pick transparent so users can't "pay" transparent objects
     mPick = gViewerWindow->pickImmediate(x, y,
-                                         /*BOOL pick_transparent*/ FALSE,
-                                         /*BOOL pick_rigged*/ TRUE,
-                                         /*BOOL pick_particle*/ TRUE,
-                                         /*BOOL pick_unselectable*/ TRUE,
+                                         /*bool pick_transparent*/ false,
+                                         /*bool pick_rigged*/ true,
+                                         /*bool pick_particle*/ true,
+                                         /*bool pick_unselectable*/ true,
                                          pick_reflection_probe);
     mPick.mKeyMask = mask;
 
@@ -197,18 +197,18 @@ BOOL LLToolPie::handleRightMouseDown(S32 x, S32 y, MASK mask)
     {
         handleRightClickPick();
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLToolPie::handleRightMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolPie::handleRightMouseUp(S32 x, S32 y, MASK mask)
 {
     LLToolMgr::getInstance()->clearTransientTool();
     return LLTool::handleRightMouseUp(x, y, mask);
 }
 
-BOOL LLToolPie::handleScrollWheelAny(S32 x, S32 y, S32 clicks_x, S32 clicks_y)
+bool LLToolPie::handleScrollWheelAny(S32 x, S32 y, S32 clicks_x, S32 clicks_y)
 {
-    BOOL res = FALSE;
+    bool res = false;
     // mHoverPick should have updated on its own and we should have a face
     // in LLViewerMediaFocus in case of media, so just reuse mHoverPick
     if (mHoverPick.mUVCoords.mV[VX] >= 0.f && mHoverPick.mUVCoords.mV[VY] >= 0.f)
@@ -223,18 +223,18 @@ BOOL LLToolPie::handleScrollWheelAny(S32 x, S32 y, S32 clicks_x, S32 clicks_y)
     return res;
 }
 
-BOOL LLToolPie::handleScrollWheel(S32 x, S32 y, S32 clicks)
+bool LLToolPie::handleScrollWheel(S32 x, S32 y, S32 clicks)
 {
     return handleScrollWheelAny(x, y, 0, clicks);
 }
 
-BOOL LLToolPie::handleScrollHWheel(S32 x, S32 y, S32 clicks)
+bool LLToolPie::handleScrollHWheel(S32 x, S32 y, S32 clicks)
 {
     return handleScrollWheelAny(x, y, clicks, 0);
 }
 
 // True if you selected an object.
-BOOL LLToolPie::handleLeftClickPick()
+bool LLToolPie::handleLeftClickPick()
 {
     S32 x = mPick.mMousePt.mX;
     S32 y = mPick.mMousePt.mY;
@@ -249,7 +249,7 @@ BOOL LLToolPie::handleLeftClickPick()
                 && !LLViewerParcelMgr::getInstance()->isCollisionBanned())
             {
                 // if selling passes, just buy one
-                void* deselect_when_done = (void*)TRUE;
+                void* deselect_when_done = (void*)true;
                 LLPanelLandGeneral::onClickBuyPass(deselect_when_done);
             }
             else
@@ -279,7 +279,7 @@ BOOL LLToolPie::handleLeftClickPick()
 
     if (handleMediaClick(mPick))
     {
-        return TRUE;
+        return true;
     }
 
     // If it's a left-click, and we have a special action, do it.
@@ -307,7 +307,7 @@ BOOL LLToolPie::handleLeftClickPick()
                     handle_object_sit_or_stand();
                     // put focus in world when sitting on an object
                     gFocusMgr.setKeyboardFocus(NULL);
-                    return TRUE;
+                    return true;
                 } // else nothing (fall through to touch)
             }
         case CLICK_ACTION_PAY:
@@ -318,13 +318,13 @@ BOOL LLToolPie::handleLeftClickPick()
                 {
                     // pay event goes to object actually clicked on
                     mClickActionObject = object;
-                    mLeftClickSelection = LLToolSelect::handleObjectSelection(mPick, FALSE, TRUE);
+                    mLeftClickSelection = LLToolSelect::handleObjectSelection(mPick, false, true);
                     if (LLSelectMgr::getInstance()->selectGetAllValid())
                     {
                         // call this right away, since we have all the info we need to continue the action
                         selectionPropertiesReceived();
                     }
-                    return TRUE;
+                    return true;
                 }
             }
             break;
@@ -332,34 +332,34 @@ BOOL LLToolPie::handleLeftClickPick()
             if ( mClickActionBuyEnabled )
             {
                 mClickActionObject = parent;
-                mLeftClickSelection = LLToolSelect::handleObjectSelection(mPick, FALSE, TRUE, TRUE);
+                mLeftClickSelection = LLToolSelect::handleObjectSelection(mPick, false, true, true);
                 if (LLSelectMgr::getInstance()->selectGetAllValid())
                 {
                     // call this right away, since we have all the info we need to continue the action
                     selectionPropertiesReceived();
                 }
-                return TRUE;
+                return true;
             }
             break;
         case CLICK_ACTION_OPEN:
             if (parent && parent->allowOpen())
             {
                 mClickActionObject = parent;
-                mLeftClickSelection = LLToolSelect::handleObjectSelection(mPick, FALSE, TRUE, TRUE);
+                mLeftClickSelection = LLToolSelect::handleObjectSelection(mPick, false, true, true);
                 if (LLSelectMgr::getInstance()->selectGetAllValid())
                 {
                     // call this right away, since we have all the info we need to continue the action
                     selectionPropertiesReceived();
                 }
             }
-            return TRUE;
+            return true;
         case CLICK_ACTION_PLAY:
             handle_click_action_play();
-            return TRUE;
+            return true;
         case CLICK_ACTION_OPEN_MEDIA:
             // mClickActionObject = object;
             handle_click_action_open_media(object);
-            return TRUE;
+            return true;
         case CLICK_ACTION_ZOOM:
             {
                 const F32 PADDING_FACTOR = 2.f;
@@ -367,7 +367,7 @@ BOOL LLToolPie::handleLeftClickPick()
 
                 if (object)
                 {
-                    gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+                    gAgentCamera.setFocusOnAvatar(false, ANIMATE);
 
                     LLBBox bbox = object->getBoundingBoxAgent() ;
                     F32 angle_of_view = llmax(0.1f, LLViewerCamera::getInstance()->getAspect() > 1.f ? LLViewerCamera::getInstance()->getView() * LLViewerCamera::getInstance()->getAspect() : LLViewerCamera::getInstance()->getView());
@@ -382,9 +382,9 @@ BOOL LLToolPie::handleLeftClickPick()
                                                       mPick.mObjectID );
                 }
             }
-            return TRUE;
+            return true;
         case CLICK_ACTION_DISABLED:
-            return TRUE;
+            return true;
         default:
             // nothing
             break;
@@ -444,12 +444,12 @@ BOOL LLToolPie::handleLeftClickPick()
         mMouseButtonDown = false;
         LLToolMgr::getInstance()->setTransientTool(LLToolCamera::getInstance());
         gViewerWindow->hideCursor();
-        LLToolCamera::getInstance()->setMouseCapture(TRUE);
+        LLToolCamera::getInstance()->setMouseCapture(true);
         LLToolCamera::getInstance()->setClickPickPending();
         LLToolCamera::getInstance()->pickCallback(mPick);
-        gAgentCamera.setFocusOnAvatar(TRUE, TRUE);
+        gAgentCamera.setFocusOnAvatar(true, true);
 
-        return TRUE;
+        return true;
     }
     //////////
     //  // Could be first left-click on nothing
@@ -459,7 +459,7 @@ BOOL LLToolPie::handleLeftClickPick()
     return LLTool::handleMouseDown(x, y, mask);
 }
 
-BOOL LLToolPie::useClickAction(MASK mask,
+bool LLToolPie::useClickAction(MASK mask,
                                LLViewerObject* object,
                                LLViewerObject* parent)
 {
@@ -578,9 +578,9 @@ bool LLToolPie::walkToClickedLocation()
     if (gAgentCamera.getCameraMode() != CAMERA_MODE_MOUSELOOK)
     {
         mPick = gViewerWindow->pickImmediate(mHoverPick.mMousePt.mX, mHoverPick.mMousePt.mY,
-            FALSE /* ignore transparent */,
-            FALSE /* ignore rigged */,
-            FALSE /* ignore particles */);
+            false /* ignore transparent */,
+            false /* ignore rigged */,
+            false /* ignore particles */);
     }
     else
     {
@@ -588,9 +588,9 @@ bool LLToolPie::walkToClickedLocation()
         // use croshair's position to do a pick
         mPick = gViewerWindow->pickImmediate(gViewerWindow->getWorldViewRectScaled().getWidth() / 2,
             gViewerWindow->getWorldViewRectScaled().getHeight() / 2,
-            FALSE /* ignore transparent */,
-            FALSE /* ignore rigged */,
-            FALSE /* ignore particles */);
+            false /* ignore transparent */,
+            false /* ignore rigged */,
+            false /* ignore particles */);
     }
 
     if (mPick.mPickType == LLPickInfo::PICK_OBJECT)
@@ -620,17 +620,17 @@ bool LLToolPie::walkToClickedLocation()
     if ((mPick.mPickType == LLPickInfo::PICK_LAND && !mPick.mPosGlobal.isExactlyZero()) ||
         (mPick.mObjectID.notNull() && !mPick.mPosGlobal.isExactlyZero()))
     {
-        gAgentCamera.setFocusOnAvatar(TRUE, TRUE);
+        gAgentCamera.setFocusOnAvatar(true, true);
 
         if (mAutoPilotDestination) { mAutoPilotDestination->markDead(); }
-        mAutoPilotDestination = (LLHUDEffectBlob *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BLOB, FALSE);
+        mAutoPilotDestination = (LLHUDEffectBlob *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BLOB, false);
         mAutoPilotDestination->setPositionGlobal(mPick.mPosGlobal);
         mAutoPilotDestination->setPixelSize(5);
         mAutoPilotDestination->setColor(LLColor4U(170, 210, 190));
         mAutoPilotDestination->setDuration(3.f);
 
         LLVector3d pos = LLToolPie::getInstance()->getPick().mPosGlobal;
-        gAgent.startAutoPilotGlobal(pos, std::string(), NULL, NULL, NULL, 0.f, 0.03f, FALSE);
+        gAgent.startAutoPilotGlobal(pos, std::string(), NULL, NULL, NULL, 0.f, 0.03f, false);
         LLFirstUse::notMoving(false);
         showVisualContextMenuEffect();
         return true;
@@ -653,10 +653,10 @@ bool LLToolPie::teleportToClickedLocation()
     {
         // We do not handle hover in mouselook as we do in other modes, so
         // use croshair's position to do a pick
-        BOOL pick_rigged = false;
+        bool pick_rigged = false;
         mHoverPick = gViewerWindow->pickImmediate(gViewerWindow->getWorldViewRectScaled().getWidth() / 2,
                                                   gViewerWindow->getWorldViewRectScaled().getHeight() / 2,
-                                                  FALSE,
+                                                  false,
                                                   pick_rigged);
     }
     LLViewerObject* objp = mHoverPick.getObject();
@@ -736,10 +736,10 @@ void LLToolPie::selectionPropertiesReceived()
     LLToolPie::getInstance()->resetSelection();
 }
 
-BOOL LLToolPie::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolPie::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL pick_rigged = false; //gSavedSettings.getBOOL("AnimatedObjectsAllowLeftClick");
-    mHoverPick = gViewerWindow->pickImmediate(x, y, FALSE, pick_rigged);
+    bool pick_rigged = false; //gSavedSettings.getBOOL("AnimatedObjectsAllowLeftClick");
+    mHoverPick = gViewerWindow->pickImmediate(x, y, false, pick_rigged);
     LLViewerObject *parent = NULL;
     LLViewerObject *object = mHoverPick.getObject();
     LLSelectMgr::getInstance()->setHoverObject(object, mHoverPick.mObjectFace);
@@ -775,7 +775,7 @@ BOOL LLToolPie::handleHover(S32 x, S32 y, MASK mask)
     else
     {
         // perform a separate pick that detects transparent objects since they respond to 1-click actions
-        LLPickInfo click_action_pick = gViewerWindow->pickImmediate(x, y, FALSE, pick_rigged);
+        LLPickInfo click_action_pick = gViewerWindow->pickImmediate(x, y, false, pick_rigged);
 
         LLViewerObject* click_action_object = click_action_pick.getObject();
 
@@ -811,10 +811,10 @@ BOOL LLToolPie::handleHover(S32 x, S32 y, MASK mask)
         LLViewerMediaFocus::getInstance()->clearHover();
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLToolPie::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolPie::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if (!mDoubleClickTimer.getStarted())
     {
@@ -832,7 +832,7 @@ BOOL LLToolPie::handleMouseUp(S32 x, S32 y, MASK mask)
     gViewerWindow->setCursor(UI_CURSOR_ARROW);
     if (hasMouseCapture())
     {
-        setMouseCapture(FALSE);
+        setMouseCapture(false);
     }
 
     LLToolMgr::getInstance()->clearTransientTool();
@@ -851,7 +851,7 @@ void LLToolPie::stopClickToWalk()
     }
 }
 
-BOOL LLToolPie::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLToolPie::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if (gDebugClicks)
     {
@@ -860,17 +860,17 @@ BOOL LLToolPie::handleDoubleClick(S32 x, S32 y, MASK mask)
 
     if (handleMediaDblClick(mPick))
     {
-        return TRUE;
+        return true;
     }
 
     if (!mDoubleClickTimer.getStarted() || (mDoubleClickTimer.getElapsedTimeF32() > 0.3f))
     {
         mDoubleClickTimer.stop();
-        return FALSE;
+        return false;
     }
     mDoubleClickTimer.stop();
 
-    return FALSE;
+    return false;
 }
 
 static bool needs_tooltip(LLSelectNode* nodep)
@@ -881,10 +881,10 @@ static bool needs_tooltip(LLSelectNode* nodep)
 }
 
 
-BOOL LLToolPie::handleTooltipLand(std::string line, std::string tooltip_msg)
+bool LLToolPie::handleTooltipLand(std::string line, std::string tooltip_msg)
 {
     //  Do not show hover for land unless prefs are set to allow it.
-    if (!gSavedSettings.getBOOL("ShowLandHoverTip")) return TRUE;
+    if (!gSavedSettings.getBOOL("ShowLandHoverTip")) return true;
 
     LLViewerParcelMgr::getInstance()->setHoverParcel( mHoverPick.mPosGlobal );
 
@@ -1038,16 +1038,16 @@ BOOL LLToolPie::handleTooltipLand(std::string line, std::string tooltip_msg)
         LLToolTipMgr::instance().show(tooltip_msg);
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLToolPie::handleTooltipObject( LLViewerObject* hover_object, std::string line, std::string tooltip_msg)
+bool LLToolPie::handleTooltipObject( LLViewerObject* hover_object, std::string line, std::string tooltip_msg)
 {
     if ( hover_object->isHUDAttachment() )
     {
         // no hover tips for HUD elements, since they can obscure
         // what the HUD is displaying
-        return TRUE;
+        return true;
     }
 
     if ( hover_object->isAttachment() )
@@ -1057,13 +1057,13 @@ BOOL LLToolPie::handleTooltipObject( LLViewerObject* hover_object, std::string l
         if (!root_edit)
         {
             // Strange parenting issue, don't show any text
-            return TRUE;
+            return true;
         }
         hover_object = (LLViewerObject*)root_edit->getParent();
         if (!hover_object)
         {
             // another strange parenting issue, bail out
-            return TRUE;
+            return true;
         }
     }
 
@@ -1221,14 +1221,14 @@ BOOL LLToolPie::handleTooltipObject( LLViewerObject* hover_object, std::string l
         }
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLToolPie::handleToolTip(S32 local_x, S32 local_y, MASK mask)
+bool LLToolPie::handleToolTip(S32 local_x, S32 local_y, MASK mask)
 {
     static LLCachedControl<bool> show_hover_tips(*LLUI::getInstance()->mSettingGroups["config"], "ShowHoverTips", true);
-    if (!show_hover_tips) return TRUE;
-    if (!mHoverPick.isValid()) return TRUE;
+    if (!show_hover_tips) return true;
+    if (!mHoverPick.isValid()) return true;
 
     LLViewerObject* hover_object = mHoverPick.getObject();
 
@@ -1248,7 +1248,7 @@ BOOL LLToolPie::handleToolTip(S32 local_x, S32 local_y, MASK mask)
         handleTooltipLand(line, tooltip_msg);
     }
 
-    return TRUE;
+    return true;
 }
 
 static void show_inspector(const char* inspector, const char* param, const LLUUID& source_id)
@@ -1406,14 +1406,14 @@ void LLToolPie::handleDeselect()
 {
     if( hasMouseCapture() )
     {
-        setMouseCapture( FALSE );  // Calls onMouseCaptureLost() indirectly
+        setMouseCapture( false );  // Calls onMouseCaptureLost() indirectly
     }
     // remove temporary selection for pie menu
     LLSelectMgr::getInstance()->setHoverObject(NULL);
 
     // Menu may be still up during transfer to different tool.
     // toolfocus and toolgrab should retain menu, they will clear it if needed
-    MASK override_mask = gKeyboard ? gKeyboard->currentMask(TRUE) : 0;
+    MASK override_mask = gKeyboard ? gKeyboard->currentMask(true) : 0;
     if (gMenuHolder && (!gMenuHolder->getVisible() || (override_mask & (MASK_ALT | MASK_CONTROL)) == 0))
     {
         // in most cases menu is useless without correct selection, so either keep both or discard both
@@ -1442,7 +1442,7 @@ void LLToolPie::stopEditing()
 {
     if( hasMouseCapture() )
     {
-        setMouseCapture( FALSE );  // Calls onMouseCaptureLost() indirectly
+        setMouseCapture( false );  // Calls onMouseCaptureLost() indirectly
     }
 }
 
@@ -1464,7 +1464,7 @@ bool LLToolPie::inCameraSteerMode()
 }
 
 // true if x,y outside small box around start_x,start_y
-BOOL LLToolPie::outsideSlop(S32 x, S32 y, S32 start_x, S32 start_y)
+bool LLToolPie::outsideSlop(S32 x, S32 y, S32 start_x, S32 start_y)
 {
     S32 dx = x - start_x;
     S32 dy = y - start_y;
@@ -1541,9 +1541,9 @@ bool LLToolPie::handleMediaClick(const LLPickInfo& pick)
             gFocusMgr.setKeyboardFocus(LLViewerMediaFocus::getInstance());
             LLEditMenuHandler::gEditMenuHandler = LLViewerMediaFocus::instance().getFocusedMediaImpl();
 
-            media_impl->mouseDown(pick.mUVCoords, gKeyboard->currentMask(TRUE));
+            media_impl->mouseDown(pick.mUVCoords, gKeyboard->currentMask(true));
             mMediaMouseCaptureID = mep->getMediaID();
-            setMouseCapture(TRUE);  // This object will send a mouse-up to the media when it loses capture.
+            setMouseCapture(true);  // This object will send a mouse-up to the media when it loses capture.
         }
 
         return true;
@@ -1595,9 +1595,9 @@ bool LLToolPie::handleMediaDblClick(const LLPickInfo& pick)
             gFocusMgr.setKeyboardFocus(LLViewerMediaFocus::getInstance());
             LLEditMenuHandler::gEditMenuHandler = LLViewerMediaFocus::instance().getFocusedMediaImpl();
 
-            media_impl->mouseDoubleClick(pick.mUVCoords, gKeyboard->currentMask(TRUE));
+            media_impl->mouseDoubleClick(pick.mUVCoords, gKeyboard->currentMask(true));
             mMediaMouseCaptureID = mep->getMediaID();
-            setMouseCapture(TRUE);  // This object will send a mouse-up to the media when it loses capture.
+            setMouseCapture(true);  // This object will send a mouse-up to the media when it loses capture.
         }
 
         return true;
@@ -1648,7 +1648,7 @@ bool LLToolPie::handleMediaHover(const LLPickInfo& pick)
             // If this is the focused media face, send mouse move events.
             if (LLViewerMediaFocus::getInstance()->isFocusedOnFace(objectp, pick.mObjectFace))
             {
-                media_impl->mouseMove(pick.mUVCoords, gKeyboard->currentMask(TRUE));
+                media_impl->mouseMove(pick.mUVCoords, gKeyboard->currentMask(true));
                 gViewerWindow->setCursor(media_impl->getLastSetCursor());
             }
             else
@@ -1744,7 +1744,7 @@ static ECursorType cursor_from_parcel_media(U8 click_action)
 
 
 // True if we handled the event.
-BOOL LLToolPie::handleRightClickPick()
+bool LLToolPie::handleRightClickPick()
 {
     S32 x = mPick.mMousePt.mX;
     S32 y = mPick.mMousePt.mY;
@@ -1759,7 +1759,7 @@ BOOL LLToolPie::handleRightClickPick()
     LLViewerObject *object = mPick.getObject();
 
     // Can't ignore children here.
-    LLToolSelect::handleObjectSelection(mPick, FALSE, TRUE);
+    LLToolSelect::handleObjectSelection(mPick, false, true);
 
     // Spawn pie menu
     if (mPick.mPickType == LLPickInfo::PICK_LAND)
@@ -1777,7 +1777,7 @@ BOOL LLToolPie::handleRightClickPick()
         {
             //either at very early startup stage or at late quitting stage,
             //this event is ignored.
-            return TRUE ;
+            return true ;
         }
 
         gMenuAvatarSelf->show(x, y);
@@ -1798,7 +1798,7 @@ BOOL LLToolPie::handleRightClickPick()
 
             if (!object)
             {
-                return TRUE; // unexpected, but escape
+                return true; // unexpected, but escape
             }
 
             // Object is an avatar, so check for mute by id.
@@ -1860,13 +1860,13 @@ BOOL LLToolPie::handleRightClickPick()
 
     LLTool::handleRightMouseDown(x, y, mask);
     // We handled the event.
-    return TRUE;
+    return true;
 }
 
 void LLToolPie::showVisualContextMenuEffect()
 {
     // VEFFECT: ShowPie
-    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_SPHERE, TRUE);
+    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_SPHERE, true);
     effectp->setPositionGlobal(mPick.mPosGlobal);
     effectp->setColor(LLColor4U(gAgent.getEffectColor()));
     effectp->setDuration(0.25f);
@@ -1938,7 +1938,7 @@ void LLToolPie::startCameraSteering()
                 LLViewerCamera::instance().getOrigin() + gViewerWindow->mouseDirectionGlobal(mSteerPick.mMousePt.mX, mSteerPick.mMousePt.mY) * 100.f);
         }
 
-        setMouseCapture(TRUE);
+        setMouseCapture(true);
 
         mMouseSteerX = mMouseDownX;
         mMouseSteerY = mMouseDownY;
@@ -1947,7 +1947,7 @@ void LLToolPie::startCameraSteering()
 
         mClockwise = camera_to_rotation_center * rotation_center_to_pick < 0.f;
         if (mMouseSteerGrabPoint) { mMouseSteerGrabPoint->markDead(); }
-        mMouseSteerGrabPoint = (LLHUDEffectBlob *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BLOB, FALSE);
+        mMouseSteerGrabPoint = (LLHUDEffectBlob *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BLOB, false);
         mMouseSteerGrabPoint->setPositionGlobal(mSteerPick.mPosGlobal);
         mMouseSteerGrabPoint->setColor(LLColor4U(170, 210, 190));
         mMouseSteerGrabPoint->setPixelSize(5);
diff --git a/indra/newview/lltoolpie.h b/indra/newview/lltoolpie.h
index 94f87d5b0f..b3884a6bfc 100644
--- a/indra/newview/lltoolpie.h
+++ b/indra/newview/lltoolpie.h
@@ -42,17 +42,17 @@ class LLToolPie : public LLTool, public LLSingleton<LLToolPie>
 public:
 
     // Virtual functions inherited from LLMouseHandler
-    virtual BOOL        handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, BOOL down) override;
-    virtual BOOL        handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleRightMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleMouseUp(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleRightMouseUp(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleHover(S32 x, S32 y, MASK mask) override;
-    virtual BOOL        handleDoubleClick(S32 x, S32 y, MASK mask) override;
-    BOOL                handleScrollWheelAny(S32 x, S32 y, S32 clicks_x, S32 clicks_y);
-    virtual BOOL        handleScrollWheel(S32 x, S32 y, S32 clicks) override;
-    virtual BOOL        handleScrollHWheel(S32 x, S32 y, S32 clicks) override;
-    virtual BOOL        handleToolTip(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleAnyMouseClick(S32 x, S32 y, MASK mask, EMouseClickType clicktype, bool down) override;
+    virtual bool        handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleRightMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleMouseUp(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleRightMouseUp(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleHover(S32 x, S32 y, MASK mask) override;
+    virtual bool        handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    bool                handleScrollWheelAny(S32 x, S32 y, S32 clicks_x, S32 clicks_y);
+    virtual bool        handleScrollWheel(S32 x, S32 y, S32 clicks) override;
+    virtual bool        handleScrollHWheel(S32 x, S32 y, S32 clicks) override;
+    virtual bool        handleToolTip(S32 x, S32 y, MASK mask) override;
 
     virtual void        render() override;
 
@@ -81,10 +81,10 @@ public:
     static void         VisitHomePage(const LLPickInfo& info);
 
 private:
-    BOOL outsideSlop        (S32 x, S32 y, S32 start_x, S32 start_y);
-    BOOL handleLeftClickPick();
-    BOOL handleRightClickPick();
-    BOOL useClickAction     (MASK mask, LLViewerObject* object,LLViewerObject* parent);
+    bool outsideSlop        (S32 x, S32 y, S32 start_x, S32 start_y);
+    bool handleLeftClickPick();
+    bool handleRightClickPick();
+    bool useClickAction     (MASK mask, LLViewerObject* object,LLViewerObject* parent);
 
     void showVisualContextMenuEffect();
     ECursorType cursorFromObject(LLViewerObject* object);
@@ -93,8 +93,8 @@ private:
     bool handleMediaDblClick(const LLPickInfo& info);
     bool handleMediaHover(const LLPickInfo& info);
     bool handleMediaMouseUp();
-    BOOL handleTooltipLand(std::string line, std::string tooltip_msg);
-    BOOL handleTooltipObject( LLViewerObject* hover_object, std::string line, std::string tooltip_msg);
+    bool handleTooltipLand(std::string line, std::string tooltip_msg);
+    bool handleTooltipObject( LLViewerObject* hover_object, std::string line, std::string tooltip_msg);
 
     void steerCameraWithMouse(S32 x, S32 y);
     void startCameraSteering();
@@ -118,8 +118,8 @@ private:
     LLPointer<LLViewerObject> mClickActionObject;
     U8                  mClickAction;
     LLSafeHandle<LLObjectSelection> mLeftClickSelection;
-    BOOL                mClickActionBuyEnabled;
-    BOOL                mClickActionPayEnabled;
+    bool                mClickActionBuyEnabled;
+    bool                mClickActionPayEnabled;
     LLFrameTimer mDoubleClickTimer;
 };
 
diff --git a/indra/newview/lltoolpipette.cpp b/indra/newview/lltoolpipette.cpp
index e1b2352c76..9e3d435688 100644
--- a/indra/newview/lltoolpipette.cpp
+++ b/indra/newview/lltoolpipette.cpp
@@ -48,7 +48,7 @@
 
 LLToolPipette::LLToolPipette()
 :   LLTool(std::string("Pipette")),
-    mSuccess(TRUE)
+    mSuccess(true)
 {
 }
 
@@ -57,41 +57,41 @@ LLToolPipette::~LLToolPipette()
 { }
 
 
-BOOL LLToolPipette::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolPipette::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    mSuccess = TRUE;
+    mSuccess = true;
     mTooltipMsg.clear();
-    setMouseCapture(TRUE);
+    setMouseCapture(true);
     gViewerWindow->pickAsync(x, y, mask, pickCallback);
-    return TRUE;
+    return true;
 }
 
-BOOL LLToolPipette::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolPipette::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    mSuccess = TRUE;
+    mSuccess = true;
     LLSelectMgr::getInstance()->unhighlightAll();
     // *NOTE: This assumes the pipette tool is a transient tool.
     LLToolMgr::getInstance()->clearTransientTool();
-    setMouseCapture(FALSE);
-    return TRUE;
+    setMouseCapture(false);
+    return true;
 }
 
-BOOL LLToolPipette::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolPipette::handleHover(S32 x, S32 y, MASK mask)
 {
     gViewerWindow->setCursor(mSuccess ? UI_CURSOR_PIPETTE : UI_CURSOR_NO);
     if (hasMouseCapture()) // mouse button is down
     {
         gViewerWindow->pickAsync(x, y, mask, pickCallback);
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLToolPipette::handleToolTip(S32 x, S32 y, MASK mask)
+bool LLToolPipette::handleToolTip(S32 x, S32 y, MASK mask)
 {
     if (mTooltipMsg.empty())
     {
-        return FALSE;
+        return false;
     }
 
     LLRect sticky_rect;
@@ -100,7 +100,7 @@ BOOL LLToolPipette::handleToolTip(S32 x, S32 y, MASK mask)
         .message(mTooltipMsg)
         .sticky_rect(sticky_rect));
 
-    return TRUE;
+    return true;
 }
 
 void LLToolPipette::setTextureEntry(const LLTextureEntry* entry)
@@ -129,7 +129,7 @@ void LLToolPipette::pickCallback(const LLPickInfo& pick_info)
     }
 }
 
-void LLToolPipette::setResult(BOOL success, const std::string& msg)
+void LLToolPipette::setResult(bool success, const std::string& msg)
 {
     mTooltipMsg = msg;
     mSuccess = success;
diff --git a/indra/newview/lltoolpipette.h b/indra/newview/lltoolpipette.h
index 44d06f5383..0f1574f2d5 100644
--- a/indra/newview/lltoolpipette.h
+++ b/indra/newview/lltoolpipette.h
@@ -47,15 +47,15 @@ class LLToolPipette
     virtual ~LLToolPipette();
 
 public:
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask) override;
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask) override;
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask) override;
-    virtual BOOL    handleToolTip(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleHover(S32 x, S32 y, MASK mask) override;
+    virtual bool    handleToolTip(S32 x, S32 y, MASK mask) override;
 
     // Note: Don't return connection; use boost::bind + boost::signals2::trackable to disconnect slots
     typedef boost::signals2::signal<void (const LLTextureEntry& te)> signal_t;
     void setToolSelectCallback(const signal_t::slot_type& cb) { mSignal.connect(cb); }
-    void setResult(BOOL success, const std::string& msg);
+    void setResult(bool success, const std::string& msg);
 
     void setTextureEntry(const LLTextureEntry* entry);
     static void pickCallback(const LLPickInfo& pick_info);
@@ -63,7 +63,7 @@ public:
 protected:
     LLTextureEntry  mTextureEntry;
     signal_t        mSignal;
-    BOOL            mSuccess;
+    bool            mSuccess;
     std::string     mTooltipMsg;
 };
 
diff --git a/indra/newview/lltoolplacer.cpp b/indra/newview/lltoolplacer.cpp
index 2519c57e86..b15bb5efd5 100644
--- a/indra/newview/lltoolplacer.cpp
+++ b/indra/newview/lltoolplacer.cpp
@@ -74,14 +74,14 @@ LLToolPlacer::LLToolPlacer()
 {
 }
 
-BOOL LLToolPlacer::raycastForNewObjPos( S32 x, S32 y, LLViewerObject** hit_obj, S32* hit_face,
-                             BOOL* b_hit_land, LLVector3* ray_start_region, LLVector3* ray_end_region, LLViewerRegion** region )
+bool LLToolPlacer::raycastForNewObjPos( S32 x, S32 y, LLViewerObject** hit_obj, S32* hit_face,
+                             bool* b_hit_land, LLVector3* ray_start_region, LLVector3* ray_end_region, LLViewerRegion** region )
 {
     F32 max_dist_from_camera = gSavedSettings.getF32( "MaxSelectDistance" ) - 1.f;
 
     // Viewer-side pick to find the right sim to create the object on.
     // First find the surface the object will be created on.
-    LLPickInfo pick = gViewerWindow->pickImmediate(x, y, FALSE, FALSE);
+    LLPickInfo pick = gViewerWindow->pickImmediate(x, y, false, false);
 
     // Note: use the frontmost non-flora version because (a) plants usually have lots of alpha and (b) pants' Havok
     // representations (if any) are NOT the same as their viewer representation.
@@ -99,12 +99,12 @@ BOOL LLToolPlacer::raycastForNewObjPos( S32 x, S32 y, LLViewerObject** hit_obj,
     LLVector3d land_pos_global = pick.mPosGlobal;
 
     // Make sure there's a surface to place the new object on.
-    BOOL bypass_sim_raycast = FALSE;
+    bool bypass_sim_raycast = false;
     LLVector3d  surface_pos_global;
     if (*b_hit_land)
     {
         surface_pos_global = land_pos_global;
-        bypass_sim_raycast = TRUE;
+        bypass_sim_raycast = true;
     }
     else
     if (*hit_obj)
@@ -113,7 +113,7 @@ BOOL LLToolPlacer::raycastForNewObjPos( S32 x, S32 y, LLViewerObject** hit_obj,
     }
     else
     {
-        return FALSE;
+        return false;
     }
 
     // Make sure the surface isn't too far away.
@@ -121,7 +121,7 @@ BOOL LLToolPlacer::raycastForNewObjPos( S32 x, S32 y, LLViewerObject** hit_obj,
     F32 dist_to_surface_sq = (F32)((surface_pos_global - ray_start_global).magVecSquared());
     if( dist_to_surface_sq > (max_dist_from_camera * max_dist_from_camera) )
     {
-        return FALSE;
+        return false;
     }
 
     // Find the sim where the surface lives.
@@ -129,7 +129,7 @@ BOOL LLToolPlacer::raycastForNewObjPos( S32 x, S32 y, LLViewerObject** hit_obj,
     if (!regionp)
     {
         LL_WARNS() << "Trying to add object outside of all known regions!" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // Find the simulator-side ray that will be used to place the object accurately
@@ -152,35 +152,35 @@ BOOL LLToolPlacer::raycastForNewObjPos( S32 x, S32 y, LLViewerObject** hit_obj,
         *ray_end_region = regionp->getPosRegionFromGlobal( ray_end_global );
     }
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLToolPlacer::addObject( LLPCode pcode, S32 x, S32 y, U8 use_physics )
+bool LLToolPlacer::addObject( LLPCode pcode, S32 x, S32 y, U8 use_physics )
 {
     LLVector3 ray_start_region;
     LLVector3 ray_end_region;
     LLViewerRegion* regionp = NULL;
-    BOOL b_hit_land = FALSE;
+    bool b_hit_land = false;
     S32 hit_face = -1;
     LLViewerObject* hit_obj = NULL;
     U8 state = 0;
-    BOOL success = raycastForNewObjPos( x, y, &hit_obj, &hit_face, &b_hit_land, &ray_start_region, &ray_end_region, &regionp );
+    bool success = raycastForNewObjPos( x, y, &hit_obj, &hit_face, &b_hit_land, &ray_start_region, &ray_end_region, &regionp );
     if( !success )
     {
-        return FALSE;
+        return false;
     }
 
     if( hit_obj && (hit_obj->isAvatar() || hit_obj->isAttachment()) )
     {
         // Can't create objects on avatars or attachments
-        return FALSE;
+        return false;
     }
 
     if (NULL == regionp)
     {
         LL_WARNS() << "regionp was NULL; aborting function." << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if (regionp->getRegionFlag(REGION_FLAGS_SANDBOX))
@@ -192,7 +192,7 @@ BOOL LLToolPlacer::addObject( LLPCode pcode, S32 x, S32 y, U8 use_physics )
     LLQuaternion    rotation;
     LLVector3       scale = DEFAULT_OBJECT_SCALE;
     U8              material = LL_MCODE_WOOD;
-    BOOL            create_selected = FALSE;
+    bool            create_selected = false;
     LLVolumeParams  volume_params;
 
     switch (pcode)
@@ -217,7 +217,7 @@ BOOL LLToolPlacer::addObject( LLPCode pcode, S32 x, S32 y, U8 use_physics )
     case LLViewerObject::LL_VO_SQUARE_TORUS:
     case LLViewerObject::LL_VO_TRIANGLE_TORUS:
     default:
-        create_selected = TRUE;
+        create_selected = true;
         break;
     }
 
@@ -401,7 +401,7 @@ BOOL LLToolPlacer::addObject( LLPCode pcode, S32 x, S32 y, U8 use_physics )
     gMessageSystem->addVector3Fast(_PREHASH_RayStart,       ray_start_region );
     gMessageSystem->addVector3Fast(_PREHASH_RayEnd,         ray_end_region );
     gMessageSystem->addU8Fast(_PREHASH_BypassRaycast,       (U8)b_hit_land );
-    gMessageSystem->addU8Fast(_PREHASH_RayEndIsIntersection, (U8)FALSE );
+    gMessageSystem->addU8Fast(_PREHASH_RayEndIsIntersection, (U8)false );
     gMessageSystem->addU8Fast(_PREHASH_State, state);
 
     // Limit raycast to a single object.
@@ -429,7 +429,7 @@ BOOL LLToolPlacer::addObject( LLPCode pcode, S32 x, S32 y, U8 use_physics )
     }
 
     // VEFFECT: AddObject
-    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, TRUE);
+    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_BEAM, true);
     effectp->setSourceObject((LLViewerObject*)gAgentAvatarp);
     effectp->setPositionGlobal(regionp->getPosGlobalFromRegion(ray_end_region));
     effectp->setDuration(LL_HUD_DUR_SHORT);
@@ -437,30 +437,30 @@ BOOL LLToolPlacer::addObject( LLPCode pcode, S32 x, S32 y, U8 use_physics )
 
     add(LLStatViewer::OBJECT_CREATE, 1);
 
-    return TRUE;
+    return true;
 }
 
 // Used by the placer tool to add copies of the current selection.
 // Inspired by add_object().  JC
-BOOL LLToolPlacer::addDuplicate(S32 x, S32 y)
+bool LLToolPlacer::addDuplicate(S32 x, S32 y)
 {
     LLVector3 ray_start_region;
     LLVector3 ray_end_region;
     LLViewerRegion* regionp = NULL;
-    BOOL b_hit_land = FALSE;
+    bool b_hit_land = false;
     S32 hit_face = -1;
     LLViewerObject* hit_obj = NULL;
-    BOOL success = raycastForNewObjPos( x, y, &hit_obj, &hit_face, &b_hit_land, &ray_start_region, &ray_end_region, &regionp );
+    bool success = raycastForNewObjPos( x, y, &hit_obj, &hit_face, &b_hit_land, &ray_start_region, &ray_end_region, &regionp );
     if( !success )
     {
         make_ui_sound("UISndInvalidOp");
-        return FALSE;
+        return false;
     }
     if( hit_obj && (hit_obj->isAvatar() || hit_obj->isAttachment()) )
     {
         // Can't create objects on avatars or attachments
         make_ui_sound("UISndInvalidOp");
-        return FALSE;
+        return false;
     }
 
 
@@ -480,11 +480,11 @@ BOOL LLToolPlacer::addDuplicate(S32 x, S32 y)
     LLSelectMgr::getInstance()->selectDuplicateOnRay(ray_start_region,
                                         ray_end_region,
                                         b_hit_land,         // suppress raycast
-                                        FALSE,              // intersection
+                                        false,              // intersection
                                         ray_target_id,
                                         gSavedSettings.getBOOL("CreateToolCopyCenters"),
                                         gSavedSettings.getBOOL("CreateToolCopyRotates"),
-                                        FALSE);             // select copy
+                                        false);             // select copy
 
     if (regionp
         && (regionp->getRegionFlag(REGION_FLAGS_SANDBOX)))
@@ -492,13 +492,13 @@ BOOL LLToolPlacer::addDuplicate(S32 x, S32 y)
         //LLFirstUse::useSandbox();
     }
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLToolPlacer::placeObject(S32 x, S32 y, MASK mask)
+bool LLToolPlacer::placeObject(S32 x, S32 y, MASK mask)
 {
-    BOOL added = TRUE;
+    bool added = true;
 
     if (gSavedSettings.getBOOL("CreateToolCopySelection"))
     {
@@ -506,7 +506,7 @@ BOOL LLToolPlacer::placeObject(S32 x, S32 y, MASK mask)
     }
     else
     {
-        added = addObject( sObjectType, x, y, FALSE );
+        added = addObject( sObjectType, x, y, false );
     }
 
     // ...and go back to the default tool
@@ -518,11 +518,11 @@ BOOL LLToolPlacer::placeObject(S32 x, S32 y, MASK mask)
     return added;
 }
 
-BOOL LLToolPlacer::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolPlacer::handleHover(S32 x, S32 y, MASK mask)
 {
     LL_DEBUGS("UserInput") << "hover handled by LLToolPlacer" << LL_ENDL;
     gViewerWindow->setCursor(UI_CURSOR_TOOLCREATE);
-    return TRUE;
+    return true;
 }
 
 void LLToolPlacer::handleSelect()
diff --git a/indra/newview/lltoolplacer.h b/indra/newview/lltoolplacer.h
index d5e4a587d7..f9501f83b2 100644
--- a/indra/newview/lltoolplacer.h
+++ b/indra/newview/lltoolplacer.h
@@ -42,8 +42,8 @@ class LLToolPlacer
 public:
     LLToolPlacer();
 
-    virtual BOOL    placeObject(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    placeObject(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
     virtual void    handleSelect(); // do stuff when your tool is selected
     virtual void    handleDeselect();   // clean up when your tool is deselected
 
@@ -54,10 +54,10 @@ protected:
     static LLPCode  sObjectType;
 
 private:
-    BOOL addObject( LLPCode pcode, S32 x, S32 y, U8 use_physics );
-    BOOL raycastForNewObjPos( S32 x, S32 y, LLViewerObject** hit_obj, S32* hit_face,
-                              BOOL* b_hit_land, LLVector3* ray_start_region, LLVector3* ray_end_region, LLViewerRegion** region );
-    BOOL addDuplicate(S32 x, S32 y);
+    bool addObject( LLPCode pcode, S32 x, S32 y, U8 use_physics );
+    bool raycastForNewObjPos( S32 x, S32 y, LLViewerObject** hit_obj, S32* hit_face,
+                              bool* b_hit_land, LLVector3* ray_start_region, LLVector3* ray_end_region, LLViewerRegion** region );
+    bool addDuplicate(S32 x, S32 y);
 };
 
 #endif
diff --git a/indra/newview/lltoolselect.cpp b/indra/newview/lltoolselect.cpp
index 5960989166..cc04f9e3fc 100644
--- a/indra/newview/lltoolselect.cpp
+++ b/indra/newview/lltoolselect.cpp
@@ -49,26 +49,26 @@
 #include "llworld.h"
 
 // Globals
-//extern BOOL gAllowSelectAvatar;
+//extern bool gAllowSelectAvatar;
 
 const F32 SELECTION_ROTATION_TRESHOLD = 0.1f;
 const F32 SELECTION_SITTING_ROTATION_TRESHOLD = 3.2f; //radian
 
 LLToolSelect::LLToolSelect( LLToolComposite* composite )
 :   LLTool( std::string("Select"), composite ),
-    mIgnoreGroup( FALSE )
+    mIgnoreGroup( false )
 {
  }
 
 // True if you selected an object.
-BOOL LLToolSelect::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolSelect::handleMouseDown(S32 x, S32 y, MASK mask)
 {
     // do immediate pick query
-    BOOL pick_rigged = false; //gSavedSettings.getBOOL("AnimatedObjectsAllowLeftClick");
-    BOOL pick_transparent = gSavedSettings.getBOOL("SelectInvisibleObjects");
-    BOOL pick_reflection_probe = gSavedSettings.getBOOL("SelectReflectionProbes");
+    bool pick_rigged = false; //gSavedSettings.getBOOL("AnimatedObjectsAllowLeftClick");
+    bool pick_transparent = gSavedSettings.getBOOL("SelectInvisibleObjects");
+    bool pick_reflection_probe = gSavedSettings.getBOOL("SelectReflectionProbes");
 
-    mPick = gViewerWindow->pickImmediate(x, y, pick_transparent, pick_rigged, FALSE, TRUE, pick_reflection_probe);
+    mPick = gViewerWindow->pickImmediate(x, y, pick_transparent, pick_rigged, false, true, pick_reflection_probe);
 
     // Pass mousedown to agent
     LLTool::handleMouseDown(x, y, mask);
@@ -78,25 +78,25 @@ BOOL LLToolSelect::handleMouseDown(S32 x, S32 y, MASK mask)
 
 
 // static
-LLObjectSelectionHandle LLToolSelect::handleObjectSelection(const LLPickInfo& pick, BOOL ignore_group, BOOL temp_select, BOOL select_root)
+LLObjectSelectionHandle LLToolSelect::handleObjectSelection(const LLPickInfo& pick, bool ignore_group, bool temp_select, bool select_root)
 {
     LLViewerObject* object = pick.getObject();
     if (select_root)
     {
         object = object->getRootEdit();
     }
-    BOOL select_owned = gSavedSettings.getBOOL("SelectOwnedOnly");
-    BOOL select_movable = gSavedSettings.getBOOL("SelectMovableOnly");
+    bool select_owned = gSavedSettings.getBOOL("SelectOwnedOnly");
+    bool select_movable = gSavedSettings.getBOOL("SelectMovableOnly");
 
     // *NOTE: These settings must be cleaned up at bottom of function.
     if (temp_select || LLSelectMgr::getInstance()->mAllowSelectAvatar)
     {
-        gSavedSettings.setBOOL("SelectOwnedOnly", FALSE);
-        gSavedSettings.setBOOL("SelectMovableOnly", FALSE);
-        LLSelectMgr::getInstance()->setForceSelection(TRUE);
+        gSavedSettings.setBOOL("SelectOwnedOnly", false);
+        gSavedSettings.setBOOL("SelectMovableOnly", false);
+        LLSelectMgr::getInstance()->setForceSelection(true);
     }
 
-    BOOL extend_select = (pick.mKeyMask == MASK_SHIFT) || (pick.mKeyMask == MASK_CONTROL);
+    bool extend_select = (pick.mKeyMask == MASK_SHIFT) || (pick.mKeyMask == MASK_CONTROL);
 
     // If no object, check for icon, then just deselect
     if (!object)
@@ -114,7 +114,7 @@ LLObjectSelectionHandle LLToolSelect::handleObjectSelection(const LLPickInfo& pi
     }
     else
     {
-        BOOL already_selected = object->isSelected();
+        bool already_selected = object->isSelected();
 
         if (already_selected &&
             object->getNumTEs() > 0 &&
@@ -141,7 +141,7 @@ LLObjectSelectionHandle LLToolSelect::handleObjectSelection(const LLPickInfo& pi
                 }
                 else
                 {
-                    LLSelectMgr::getInstance()->deselectObjectAndFamily(object, TRUE, TRUE);
+                    LLSelectMgr::getInstance()->deselectObjectAndFamily(object, true, true);
                 }
             }
             else
@@ -220,7 +220,7 @@ LLObjectSelectionHandle LLToolSelect::handleObjectSelection(const LLPickInfo& pi
                 LLSelectNode* select_node = selection->findNode(root_object);
                 if (select_node)
                 {
-                    select_node->setTransient(TRUE);
+                    select_node->setTransient(true);
                 }
 
                 LLViewerObject::const_child_list_t& child_list = root_object->getChildren();
@@ -231,7 +231,7 @@ LLObjectSelectionHandle LLToolSelect::handleObjectSelection(const LLPickInfo& pi
                     select_node = selection->findNode(child);
                     if (select_node)
                     {
-                        select_node->setTransient(TRUE);
+                        select_node->setTransient(true);
                     }
                 }
 
@@ -244,17 +244,17 @@ LLObjectSelectionHandle LLToolSelect::handleObjectSelection(const LLPickInfo& pi
     {
         gSavedSettings.setBOOL("SelectOwnedOnly", select_owned);
         gSavedSettings.setBOOL("SelectMovableOnly", select_movable);
-        LLSelectMgr::getInstance()->setForceSelection(FALSE);
+        LLSelectMgr::getInstance()->setForceSelection(false);
     }
 
     return LLSelectMgr::getInstance()->getSelection();
 }
 
-BOOL LLToolSelect::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolSelect::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     mIgnoreGroup = gSavedSettings.getBOOL("EditLinkedParts");
 
-    handleObjectSelection(mPick, mIgnoreGroup, FALSE);
+    handleObjectSelection(mPick, mIgnoreGroup, false);
 
     return LLTool::handleMouseUp(x, y, mask);
 }
@@ -263,7 +263,7 @@ void LLToolSelect::handleDeselect()
 {
     if( hasMouseCapture() )
     {
-        setMouseCapture( FALSE );  // Calls onMouseCaptureLost() indirectly
+        setMouseCapture( false );  // Calls onMouseCaptureLost() indirectly
     }
 }
 
@@ -272,7 +272,7 @@ void LLToolSelect::stopEditing()
 {
     if( hasMouseCapture() )
     {
-        setMouseCapture( FALSE );  // Calls onMouseCaptureLost() indirectly
+        setMouseCapture( false );  // Calls onMouseCaptureLost() indirectly
     }
 }
 
@@ -280,10 +280,10 @@ void LLToolSelect::onMouseCaptureLost()
 {
     // Finish drag
 
-    LLSelectMgr::getInstance()->enableSilhouette(TRUE);
+    LLSelectMgr::getInstance()->enableSilhouette(true);
 
     // Clean up drag-specific variables
-    mIgnoreGroup = FALSE;
+    mIgnoreGroup = false;
 }
 
 
diff --git a/indra/newview/lltoolselect.h b/indra/newview/lltoolselect.h
index c28e71b199..da2b046641 100644
--- a/indra/newview/lltoolselect.h
+++ b/indra/newview/lltoolselect.h
@@ -39,18 +39,18 @@ class LLToolSelect : public LLTool
 public:
     LLToolSelect( LLToolComposite* composite );
 
-    virtual BOOL        handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL        handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool        handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool        handleMouseUp(S32 x, S32 y, MASK mask);
 
     virtual void        stopEditing();
 
-    static LLSafeHandle<LLObjectSelection>  handleObjectSelection(const LLPickInfo& pick, BOOL ignore_group, BOOL temp_select, BOOL select_root = FALSE);
+    static LLSafeHandle<LLObjectSelection>  handleObjectSelection(const LLPickInfo& pick, bool ignore_group, bool temp_select, bool select_root = false);
 
     virtual void        onMouseCaptureLost();
     virtual void        handleDeselect();
 
 protected:
-    BOOL                mIgnoreGroup;
+    bool                mIgnoreGroup;
     LLUUID              mSelectObjectID;
     LLPickInfo          mPick;
 };
diff --git a/indra/newview/lltoolselectland.cpp b/indra/newview/lltoolselectland.cpp
index 04fe837d2b..88553c7557 100644
--- a/indra/newview/lltoolselectland.cpp
+++ b/indra/newview/lltoolselectland.cpp
@@ -47,12 +47,12 @@ LLToolSelectLand::LLToolSelectLand( )
 :   LLTool( std::string("Parcel") ),
     mDragStartGlobal(),
     mDragEndGlobal(),
-    mDragEndValid(FALSE),
+    mDragEndValid(false),
     mDragStartX(0),
     mDragStartY(0),
     mDragEndX(0),
     mDragEndY(0),
-    mMouseOutsideSlop(FALSE),
+    mMouseOutsideSlop(false),
     mWestSouthBottom(),
     mEastNorthTop()
 { }
@@ -62,19 +62,19 @@ LLToolSelectLand::~LLToolSelectLand()
 }
 
 
-BOOL LLToolSelectLand::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolSelectLand::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL hit_land = gViewerWindow->mousePointOnLandGlobal(x, y, &mDragStartGlobal);
+    bool hit_land = gViewerWindow->mousePointOnLandGlobal(x, y, &mDragStartGlobal);
     if (hit_land)
     {
-        setMouseCapture( TRUE );
+        setMouseCapture( true );
 
         mDragStartX = x;
         mDragStartY = y;
         mDragEndX = x;
         mDragEndY = y;
 
-        mDragEndValid       = TRUE;
+        mDragEndValid       = true;
         mDragEndGlobal      = mDragStartGlobal;
 
         sanitize_corners(mDragStartGlobal, mDragEndGlobal, mWestSouthBottom, mEastNorthTop);
@@ -85,7 +85,7 @@ BOOL LLToolSelectLand::handleMouseDown(S32 x, S32 y, MASK mask)
         roundXY(mWestSouthBottom);
         roundXY(mEastNorthTop);
 
-        mMouseOutsideSlop = TRUE; //FALSE;
+        mMouseOutsideSlop = true; //false;
 
         LLViewerParcelMgr::getInstance()->deselectLand();
     }
@@ -94,25 +94,25 @@ BOOL LLToolSelectLand::handleMouseDown(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLToolSelectLand::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLToolSelectLand::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     LLVector3d pos_global;
-    BOOL hit_land = gViewerWindow->mousePointOnLandGlobal(x, y, &pos_global);
+    bool hit_land = gViewerWindow->mousePointOnLandGlobal(x, y, &pos_global);
     if (hit_land)
     {
         // Auto-select this parcel
         LLViewerParcelMgr::getInstance()->selectParcelAt( pos_global );
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL LLToolSelectLand::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolSelectLand::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     if( hasMouseCapture() )
     {
-        setMouseCapture( FALSE );
+        setMouseCapture( false );
 
         if (mMouseOutsideSlop && mDragEndValid)
         {
@@ -129,35 +129,35 @@ BOOL LLToolSelectLand::handleMouseUp(S32 x, S32 y, MASK mask)
             roundXY(mEastNorthTop);
 
             // Don't auto-select entire parcel.
-            mSelection = LLViewerParcelMgr::getInstance()->selectLand( mWestSouthBottom, mEastNorthTop, FALSE );
+            mSelection = LLViewerParcelMgr::getInstance()->selectLand( mWestSouthBottom, mEastNorthTop, false );
         }
 
-        mMouseOutsideSlop = FALSE;
-        mDragEndValid = FALSE;
+        mMouseOutsideSlop = false;
+        mDragEndValid = false;
 
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL LLToolSelectLand::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolSelectLand::handleHover(S32 x, S32 y, MASK mask)
 {
     if( hasMouseCapture() )
     {
         if (mMouseOutsideSlop || outsideSlop(x, y, mDragStartX, mDragStartY))
         {
-            mMouseOutsideSlop = TRUE;
+            mMouseOutsideSlop = true;
 
             // Must do this every frame, in case the camera moved or the land moved
             // since last frame.
 
             // If doesn't hit land, doesn't change old value
             LLVector3d land_global;
-            BOOL hit_land = gViewerWindow->mousePointOnLandGlobal(x, y, &land_global);
+            bool hit_land = gViewerWindow->mousePointOnLandGlobal(x, y, &land_global);
             if (hit_land)
             {
-                mDragEndValid = TRUE;
+                mDragEndValid = true;
                 mDragEndGlobal = land_global;
 
                 sanitize_corners(mDragStartGlobal, mDragEndGlobal, mWestSouthBottom, mEastNorthTop);
@@ -173,7 +173,7 @@ BOOL LLToolSelectLand::handleHover(S32 x, S32 y, MASK mask)
             }
             else
             {
-                mDragEndValid = FALSE;
+                mDragEndValid = false;
                 LL_DEBUGS("UserInput") << "hover handled by LLToolSelectLand (active, no land)" << LL_ENDL;
                 gViewerWindow->setCursor(UI_CURSOR_NO);
             }
@@ -193,7 +193,7 @@ BOOL LLToolSelectLand::handleHover(S32 x, S32 y, MASK mask)
         gViewerWindow->setCursor(UI_CURSOR_ARROW);
     }
 
-    return TRUE;
+    return true;
 }
 
 
@@ -225,7 +225,7 @@ void LLToolSelectLand::roundXY(LLVector3d &vec)
 
 
 // true if x,y outside small box around start_x,start_y
-BOOL LLToolSelectLand::outsideSlop(S32 x, S32 y, S32 start_x, S32 start_y)
+bool LLToolSelectLand::outsideSlop(S32 x, S32 y, S32 start_x, S32 start_y)
 {
     S32 dx = x - start_x;
     S32 dy = y - start_y;
diff --git a/indra/newview/lltoolselectland.h b/indra/newview/lltoolselectland.h
index 553211f7a0..15672aa7d4 100644
--- a/indra/newview/lltoolselectland.h
+++ b/indra/newview/lltoolselectland.h
@@ -39,24 +39,24 @@ class LLToolSelectLand
     virtual ~LLToolSelectLand();
 
 public:
-    /*virtual*/ BOOL        handleMouseDown(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL        handleDoubleClick(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL        handleMouseUp(S32 x, S32 y, MASK mask) override;
-    /*virtual*/ BOOL        handleHover(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleMouseDown(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleDoubleClick(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleMouseUp(S32 x, S32 y, MASK mask) override;
+    /*virtual*/ bool        handleHover(S32 x, S32 y, MASK mask) override;
     /*virtual*/ void        render() override;              // draw the select rectangle
-    /*virtual*/ BOOL        isAlwaysRendered() override { return TRUE; }
+    /*virtual*/ bool        isAlwaysRendered() override { return true; }
 
     /*virtual*/ void        handleSelect() override;
     /*virtual*/ void        handleDeselect() override;
 
 protected:
-    BOOL            outsideSlop(S32 x, S32 y, S32 start_x, S32 start_y);
+    bool            outsideSlop(S32 x, S32 y, S32 start_x, S32 start_y);
     void            roundXY(LLVector3d& vec);
 
 protected:
     LLVector3d      mDragStartGlobal;       // global coords
     LLVector3d      mDragEndGlobal;         // global coords
-    BOOL            mDragEndValid;          // is drag end a valid point in the world?
+    bool            mDragEndValid;          // is drag end a valid point in the world?
 
     S32             mDragStartX;            // screen coords, from left
     S32             mDragStartY;            // screen coords, from bottom
@@ -64,7 +64,7 @@ protected:
     S32             mDragEndX;
     S32             mDragEndY;
 
-    BOOL            mMouseOutsideSlop;      // has mouse ever gone outside slop region?
+    bool            mMouseOutsideSlop;      // has mouse ever gone outside slop region?
 
     LLVector3d      mWestSouthBottom;       // global coords, from drag
     LLVector3d      mEastNorthTop;          // global coords, from drag
diff --git a/indra/newview/lltoolselectrect.cpp b/indra/newview/lltoolselectrect.cpp
index eceb4e2675..f9bb70b24e 100644
--- a/indra/newview/lltoolselectrect.cpp
+++ b/indra/newview/lltoolselectrect.cpp
@@ -62,17 +62,17 @@ LLToolSelectRect::LLToolSelectRect( LLToolComposite* composite )
     mDragEndY(0),
     mDragLastWidth(0),
     mDragLastHeight(0),
-    mMouseOutsideSlop(FALSE)
+    mMouseOutsideSlop(false)
 
 { }
 
 
 void dialog_refresh_all(void);
 
-BOOL LLToolSelectRect::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLToolSelectRect::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL pick_rigged = false; //gSavedSettings.getBOOL("AnimatedObjectsAllowLeftClick");
-    handlePick(gViewerWindow->pickImmediate(x, y, TRUE /* pick_transparent */, pick_rigged));
+    bool pick_rigged = false; //gSavedSettings.getBOOL("AnimatedObjectsAllowLeftClick");
+    handlePick(gViewerWindow->pickImmediate(x, y, true /* pick_transparent */, pick_rigged));
 
     LLTool::handleMouseDown(x, y, mask);
 
@@ -84,27 +84,27 @@ void LLToolSelectRect::handlePick(const LLPickInfo& pick)
     mPick = pick;
 
     // start dragging rectangle
-    setMouseCapture( TRUE );
+    setMouseCapture( true );
 
     mDragStartX = pick.mMousePt.mX;
     mDragStartY = pick.mMousePt.mY;
     mDragEndX = pick.mMousePt.mX;
     mDragEndY = pick.mMousePt.mY;
 
-    mMouseOutsideSlop = FALSE;
+    mMouseOutsideSlop = false;
 }
 
 
-BOOL LLToolSelectRect::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLToolSelectRect::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    setMouseCapture( FALSE );
+    setMouseCapture( false );
 
     if( mMouseOutsideSlop )
     {
         mDragLastWidth = 0;
         mDragLastHeight = 0;
 
-        mMouseOutsideSlop = FALSE;
+        mMouseOutsideSlop = false;
 
         if (mask == MASK_CONTROL)
         {
@@ -114,7 +114,7 @@ BOOL LLToolSelectRect::handleMouseUp(S32 x, S32 y, MASK mask)
         {
             LLSelectMgr::getInstance()->selectHighlightedObjects();
         }
-        return TRUE;
+        return true;
     }
     else
     {
@@ -123,7 +123,7 @@ BOOL LLToolSelectRect::handleMouseUp(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLToolSelectRect::handleHover(S32 x, S32 y, MASK mask)
+bool LLToolSelectRect::handleHover(S32 x, S32 y, MASK mask)
 {
     if( hasMouseCapture() )
     {
@@ -134,7 +134,7 @@ BOOL LLToolSelectRect::handleHover(S32 x, S32 y, MASK mask)
                 // just started rect select, and not adding to current selection
                 LLSelectMgr::getInstance()->deselectAll();
             }
-            mMouseOutsideSlop = TRUE;
+            mMouseOutsideSlop = true;
             mDragEndX = x;
             mDragEndY = y;
 
@@ -153,7 +153,7 @@ BOOL LLToolSelectRect::handleHover(S32 x, S32 y, MASK mask)
     }
 
     gViewerWindow->setCursor(UI_CURSOR_ARROW);
-    return TRUE;
+    return true;
 }
 
 
@@ -161,7 +161,7 @@ void LLToolSelectRect::draw()
 {
     if( hasMouseCapture() && mMouseOutsideSlop)
     {
-        if (gKeyboard->currentMask(TRUE) == MASK_CONTROL)
+        if (gKeyboard->currentMask(true) == MASK_CONTROL)
         {
             gGL.color4f(1.f, 0.f, 0.f, 1.f);
         }
@@ -175,8 +175,8 @@ void LLToolSelectRect::draw()
             llmax(mDragStartY, mDragEndY),
             llmax(mDragStartX, mDragEndX),
             llmin(mDragStartY, mDragEndY),
-            FALSE);
-        if (gKeyboard->currentMask(TRUE) == MASK_CONTROL)
+            false);
+        if (gKeyboard->currentMask(true) == MASK_CONTROL)
         {
             gGL.color4f(1.f, 0.f, 0.f, 0.1f);
         }
@@ -193,7 +193,7 @@ void LLToolSelectRect::draw()
 }
 
 // true if x,y outside small box around start_x,start_y
-BOOL LLToolSelectRect::outsideSlop(S32 x, S32 y, S32 start_x, S32 start_y)
+bool LLToolSelectRect::outsideSlop(S32 x, S32 y, S32 start_x, S32 start_y)
 {
     S32 dx = x - start_x;
     S32 dy = y - start_y;
diff --git a/indra/newview/lltoolselectrect.h b/indra/newview/lltoolselectrect.h
index 8fc4ec0c1b..514e08d252 100644
--- a/indra/newview/lltoolselectrect.h
+++ b/indra/newview/lltoolselectrect.h
@@ -36,16 +36,16 @@ class LLToolSelectRect
 public:
     LLToolSelectRect( LLToolComposite* composite );
 
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
     virtual void    draw();                         // draw the select rectangle
 
     void handlePick(const LLPickInfo& pick);
 
 protected:
     void            handleRectangleSelection(S32 x, S32 y, MASK mask);  // true if you selected one
-    BOOL            outsideSlop(S32 x, S32 y, S32 start_x, S32 start_y);
+    bool            outsideSlop(S32 x, S32 y, S32 start_x, S32 start_y);
 
 protected:
     S32             mDragStartX;                    // screen coords, from left
@@ -57,7 +57,7 @@ protected:
     S32             mDragLastWidth;
     S32             mDragLastHeight;
 
-    BOOL            mMouseOutsideSlop;      // has mouse ever gone outside slop region?
+    bool            mMouseOutsideSlop;      // has mouse ever gone outside slop region?
 };
 
 
diff --git a/indra/newview/lltracker.cpp b/indra/newview/lltracker.cpp
index a62116e913..ac93d1693a 100644
--- a/indra/newview/lltracker.cpp
+++ b/indra/newview/lltracker.cpp
@@ -75,7 +75,7 @@ const S32 HUD_ARROW_SIZE = 32;
 
 // static
 LLTracker *LLTracker::sTrackerp = NULL;
-BOOL LLTracker::sCheesyBeacon = FALSE;
+bool LLTracker::sCheesyBeacon = false;
 
 LLTracker::LLTracker()
 :   mTrackingStatus(TRACKING_NOTHING),
@@ -84,12 +84,12 @@ LLTracker::LLTracker()
     mHUDArrowCenterY(0),
     mToolTip( "" ),
     mTrackedLandmarkName(""),
-    mHasReachedLandmark(FALSE),
-    mHasLandmarkPosition(FALSE),
-    mLandmarkHasBeenVisited(FALSE),
+    mHasReachedLandmark(false),
+    mHasLandmarkPosition(false),
+    mLandmarkHasBeenVisited(false),
     mTrackedLocationName( "" ),
-    mIsTrackingLocation(FALSE),
-    mHasReachedLocation(FALSE)
+    mIsTrackingLocation(false),
+    mHasReachedLocation(false)
 { }
 
 
@@ -182,7 +182,7 @@ void LLTracker::render3D()
         if (!instance()->mBeaconText)
         {
             instance()->mBeaconText = (LLHUDText *)LLHUDObject::addHUDObject(LLHUDObject::LL_HUD_TEXT);
-            instance()->mBeaconText->setDoFade(FALSE);
+            instance()->mBeaconText->setDoFade(false);
         }
 
         LLVector3d pos_global = instance()->mTrackedPositionGlobal;
@@ -206,7 +206,7 @@ void LLTracker::render3D()
         if (!instance()->mBeaconText)
         {
             instance()->mBeaconText = (LLHUDText *)LLHUDObject::addHUDObject(LLHUDObject::LL_HUD_TEXT);
-            instance()->mBeaconText->setDoFade(FALSE);
+            instance()->mBeaconText->setDoFade(false);
         }
 
         if (instance()->mHasLandmarkPosition)
@@ -235,7 +235,7 @@ void LLTracker::render3D()
                     // disappear when they're created only a few meters
                     // away, yet disappear when the agent wanders away
                     // and back again
-                    instance()->mHasReachedLandmark = FALSE;
+                    instance()->mHasReachedLandmark = false;
                 }
                 renderBeacon( instance()->mTrackedPositionGlobal, map_track_color, map_track_color_under,
                               instance()->mBeaconText, instance()->mTrackedLandmarkName );
@@ -256,7 +256,7 @@ void LLTracker::render3D()
             if (!instance()->mBeaconText)
             {
                 instance()->mBeaconText = (LLHUDText *)LLHUDObject::addHUDObject(LLHUDObject::LL_HUD_TEXT);
-                instance()->mBeaconText->setDoFade(FALSE);
+                instance()->mBeaconText->setDoFade(false);
             }
 
             F32 dist = gFloaterWorldMap->getDistanceToDestination(instance()->getTrackedPositionGlobal(), 0.0f);
@@ -272,22 +272,22 @@ void LLTracker::render3D()
         }
         else
         {
-            BOOL stop_tracking = FALSE;
+            bool stop_tracking = false;
             const LLUUID& avatar_id = av_tracker.getAvatarID();
             if(avatar_id.isNull())
             {
-                stop_tracking = TRUE;
+                stop_tracking = true;
             }
             else
             {
                 const LLRelationship* buddy = av_tracker.getBuddyInfo(avatar_id);
                 if(buddy && !buddy->isOnline() && !gAgent.isGodlike())
                 {
-                    stop_tracking = TRUE;
+                    stop_tracking = true;
                 }
                 if(!buddy && !gAgent.isGodlike())
                 {
-                    stop_tracking = TRUE;
+                    stop_tracking = true;
                 }
             }
             if(stop_tracking)
@@ -336,7 +336,7 @@ void LLTracker::trackLocation(const LLVector3d& pos_global, const std::string& f
 
     instance()->mTrackedPositionGlobal = pos_global;
     instance()->mTrackedLocationName = full_name;
-    instance()->mIsTrackingLocation = TRUE;
+    instance()->mIsTrackingLocation = true;
     instance()->mTrackingStatus = TRACKING_LOCATION;
     instance()->mTrackingLocationType = location_type;
     instance()->mLabel = full_name;
@@ -345,9 +345,9 @@ void LLTracker::trackLocation(const LLVector3d& pos_global, const std::string& f
 
 
 // static
-BOOL LLTracker::handleMouseDown(S32 x, S32 y)
+bool LLTracker::handleMouseDown(S32 x, S32 y)
 {
-    BOOL eat_mouse_click = FALSE;
+    bool eat_mouse_click = false;
     // fortunately, we can always compute the tracking arrow center
     S32 dist_sqrd = (x - instance()->mHUDArrowCenterX) * (x - instance()->mHUDArrowCenterX) +
                     (y - instance()->mHUDArrowCenterY) * (y - instance()->mHUDArrowCenterY);
@@ -358,14 +358,14 @@ BOOL LLTracker::handleMouseDown(S32 x, S32 y)
         // turn off tracking
         if (gAgent.getAutoPilot())
         {
-            gAgent.stopAutoPilot(TRUE); // TRUE because cancelled by user
-            eat_mouse_click = TRUE;
+            gAgent.stopAutoPilot(true); // true because cancelled by user
+            eat_mouse_click = true;
         }
         */
         if (getTrackingStatus())
         {
             instance()->stopTrackingAll();
-            eat_mouse_click = TRUE;
+            eat_mouse_click = true;
         }
     }
     return eat_mouse_click;
@@ -403,7 +403,7 @@ LLVector3d LLTracker::getTrackedPositionGlobal()
 
 
 // static
-BOOL LLTracker::hasLandmarkPosition()
+bool LLTracker::hasLandmarkPosition()
 {
     if (!instance()->mHasLandmarkPosition)
     {
@@ -653,7 +653,7 @@ void LLTracker::renderBeacon(LLVector3d pos_global,
     str += text;
 
     hud_textp->setFont(LLFontGL::getFontSansSerif());
-    hud_textp->setZCompare(FALSE);
+    hud_textp->setZCompare(false);
     hud_textp->setColor(LLColor4(1.f, 1.f, 1.f, llmax(0.2f, llmin(1.f,(dist-FADE_DIST)/FADE_DIST))));
 
     hud_textp->setString(str);
@@ -703,9 +703,9 @@ void LLTracker::stopTrackingLandmark(bool clear_ui)
     mTrackedLandmarkItemID.setNull();
     mTrackedLandmarkName.assign("");
     mTrackedPositionGlobal.zeroVec();
-    mHasLandmarkPosition = FALSE;
-    mHasReachedLandmark = FALSE;
-    mLandmarkHasBeenVisited = TRUE;
+    mHasLandmarkPosition = false;
+    mHasReachedLandmark = false;
+    mLandmarkHasBeenVisited = true;
     gFloaterWorldMap->clearLandmarkSelection(clear_ui);
     mTrackingStatus = TRACKING_NOTHING;
 }
@@ -715,7 +715,7 @@ void LLTracker::stopTrackingLocation(bool clear_ui, bool dest_reached)
 {
     purgeBeaconText();
     mTrackedLocationName.assign("");
-    mIsTrackingLocation = FALSE;
+    mIsTrackingLocation = false;
     mTrackedPositionGlobal.zeroVec();
     gFloaterWorldMap->clearLocationSelection(clear_ui, dest_reached);
     mTrackingStatus = TRACKING_NOTHING;
@@ -736,7 +736,7 @@ void LLTracker::drawMarker(const LLVector3d& pos_global, const LLColor4& color)
     LLCoordGL screen;
     S32 x = 0;
     S32 y = 0;
-    const BOOL CLAMP = TRUE;
+    const bool CLAMP = true;
 
     if (LLViewerCamera::getInstance()->projectPosAgentToScreen(pos_local, screen, CLAMP)
         || LLViewerCamera::getInstance()->projectPosAgentToScreenEdge(pos_local, screen) )
@@ -850,13 +850,13 @@ void LLTracker::cacheLandmarkPosition()
 {
     // the landmark asset download may have finished, in which case
     // we'll now be able to figure out where we're trying to go
-    BOOL found_landmark = FALSE;
+    bool found_landmark = false;
     if( mTrackedLandmarkAssetID == LLFloaterWorldMap::getHomeID())
     {
         LLVector3d pos_global;
         if ( gAgent.getHomePosGlobal( &mTrackedPositionGlobal ))
         {
-            found_landmark = TRUE;
+            found_landmark = true;
         }
         else
         {
@@ -870,27 +870,27 @@ void LLTracker::cacheLandmarkPosition()
         LLLandmark* landmark = gLandmarkList.getAsset(mTrackedLandmarkAssetID);
         if(landmark && landmark->getGlobalPos(mTrackedPositionGlobal))
         {
-            found_landmark = TRUE;
+            found_landmark = true;
 
             // cache the object's visitation status
-            mLandmarkHasBeenVisited = FALSE;
+            mLandmarkHasBeenVisited = false;
             LLInventoryItem* item = gInventory.getItem(mTrackedLandmarkItemID);
             if (   item
                 && item->getFlags()&LLInventoryItemFlags::II_FLAGS_LANDMARK_VISITED)
             {
-                mLandmarkHasBeenVisited = TRUE;
+                mLandmarkHasBeenVisited = true;
             }
         }
     }
     if ( found_landmark && gFloaterWorldMap )
     {
-        mHasReachedLandmark = FALSE;
+        mHasReachedLandmark = false;
         F32 dist = gFloaterWorldMap->getDistanceToDestination(mTrackedPositionGlobal, 1.0f);
         if ( dist < DESTINATION_UNVISITED_RADIUS )
         {
-            mHasReachedLandmark = TRUE;
+            mHasReachedLandmark = true;
         }
-        mHasLandmarkPosition = TRUE;
+        mHasLandmarkPosition = true;
     }
     mHasLandmarkPosition = found_landmark;
 }
diff --git a/indra/newview/lltracker.h b/indra/newview/lltracker.h
index c22432abb9..bf341216dd 100644
--- a/indra/newview/lltracker.h
+++ b/indra/newview/lltracker.h
@@ -88,7 +88,7 @@ public:
     // returns global pos of tracked thing
     static LLVector3d   getTrackedPositionGlobal();
 
-    static BOOL         hasLandmarkPosition();
+    static bool         hasLandmarkPosition();
     static const std::string& getTrackedLocationName();
 
     static void drawHUDArrow();
@@ -96,10 +96,10 @@ public:
     // Draw in-world 3D tracking stuff
     static void render3D();
 
-    static BOOL handleMouseDown(S32 x, S32 y);
+    static bool handleMouseDown(S32 x, S32 y);
 
     static LLTracker* sTrackerp;
-    static BOOL sCheesyBeacon;
+    static bool sCheesyBeacon;
 
     static const std::string& getLabel() { return instance()->mLabel; }
     static const std::string& getToolTip() { return instance()->mToolTip; }
@@ -141,13 +141,13 @@ protected:
     LLUUID                  mTrackedLandmarkItemID;
     std::vector<LLUUID> mLandmarkAssetIDList;
     std::vector<LLUUID> mLandmarkItemIDList;
-    BOOL                    mHasReachedLandmark;
-    BOOL                    mHasLandmarkPosition;
-    BOOL                    mLandmarkHasBeenVisited;
+    bool                    mHasReachedLandmark;
+    bool                    mHasLandmarkPosition;
+    bool                    mLandmarkHasBeenVisited;
 
     std::string             mTrackedLocationName;
-    BOOL                    mIsTrackingLocation;
-    BOOL                    mHasReachedLocation;
+    bool                    mIsTrackingLocation;
+    bool                    mHasReachedLocation;
 };
 
 
diff --git a/indra/newview/lltrackpicker.cpp b/indra/newview/lltrackpicker.cpp
index 36ca93a801..bef314f964 100644
--- a/indra/newview/lltrackpicker.cpp
+++ b/indra/newview/lltrackpicker.cpp
@@ -57,11 +57,11 @@ LLFloaterTrackPicker::~LLFloaterTrackPicker()
 {
 }
 
-BOOL LLFloaterTrackPicker::postBuild()
+bool LLFloaterTrackPicker::postBuild()
 {
     childSetAction(BTN_CANCEL, [this](LLUICtrl*, const LLSD& param){ onButtonCancel(); });
     childSetAction(BTN_SELECT, [this](LLUICtrl*, const LLSD& param){ onButtonSelect(); });
-    return TRUE;
+    return true;
 }
 
 void LLFloaterTrackPicker::onClose(bool app_quitting)
@@ -72,7 +72,7 @@ void LLFloaterTrackPicker::onClose(bool app_quitting)
     LLView *owner = mOwnerHandle.get();
     if (owner)
     {
-        owner->setFocus(TRUE);
+        owner->setFocus(true);
     }
 }
 
@@ -94,12 +94,12 @@ void LLFloaterTrackPicker::showPicker(const LLSD &args)
         if (can_enable && select_item)
         {
             select_item = false;
-            getChild<LLRadioGroup>(RDO_TRACK_SELECTION, true)->setSelectedByValue(LLSD(track_id), TRUE);
+            getChild<LLRadioGroup>(RDO_TRACK_SELECTION, true)->setSelectedByValue(LLSD(track_id), true);
         }
     }
 
     openFloater(getKey());
-    setFocus(TRUE);
+    setFocus(true);
 }
 
 void LLFloaterTrackPicker::draw()
diff --git a/indra/newview/lltrackpicker.h b/indra/newview/lltrackpicker.h
index a00cc87c51..eda8259d33 100644
--- a/indra/newview/lltrackpicker.h
+++ b/indra/newview/lltrackpicker.h
@@ -39,7 +39,7 @@ public:
     LLFloaterTrackPicker(LLView * owner, const LLSD &params = LLSD());
     virtual ~LLFloaterTrackPicker() override;
 
-    virtual BOOL postBuild() override;
+    virtual bool postBuild() override;
     virtual void onClose(bool app_quitting) override;
     void         showPicker(const LLSD &args);
 
diff --git a/indra/newview/lltransientdockablefloater.cpp b/indra/newview/lltransientdockablefloater.cpp
index 4fb4edb0e6..a3818d5c01 100644
--- a/indra/newview/lltransientdockablefloater.cpp
+++ b/indra/newview/lltransientdockablefloater.cpp
@@ -52,7 +52,7 @@ LLTransientDockableFloater::~LLTransientDockableFloater()
     }
 }
 
-void LLTransientDockableFloater::setVisible(BOOL visible)
+void LLTransientDockableFloater::setVisible(bool visible)
 {
     LLView* dock = getDockWidget();
     if(visible && isDocked())
diff --git a/indra/newview/lltransientdockablefloater.h b/indra/newview/lltransientdockablefloater.h
index 27e74d8880..b3b408f853 100644
--- a/indra/newview/lltransientdockablefloater.h
+++ b/indra/newview/lltransientdockablefloater.h
@@ -45,9 +45,9 @@ public:
             const LLSD& key, const Params& params = getDefaultParams());
     virtual ~LLTransientDockableFloater();
 
-    /*virtual*/ void setVisible(BOOL visible);
-    /* virtual */void setDocked(bool docked, bool pop_on_undock = true);
-    virtual LLTransientFloaterMgr::ETransientGroup getGroup() { return LLTransientFloaterMgr::GLOBAL; }
+    void setVisible(bool visible) override;
+    void setDocked(bool docked, bool pop_on_undock = true) override;
+    virtual LLTransientFloaterMgr::ETransientGroup getGroup() override { return LLTransientFloaterMgr::GLOBAL; }
 };
 
 #endif /* LL_TRANSIENTDOCKABLEFLOATER_H */
diff --git a/indra/newview/lltransientfloatermgr.cpp b/indra/newview/lltransientfloatermgr.cpp
index bb226efb2c..dc777dbb67 100644
--- a/indra/newview/lltransientfloatermgr.cpp
+++ b/indra/newview/lltransientfloatermgr.cpp
@@ -96,7 +96,7 @@ void LLTransientFloaterMgr::hideTransientFloaters(S32 x, S32 y)
             bool hide = isControlClicked(group, mGroupControls.find(group)->second, x, y);
             if (hide)
             {
-                floater->setTransientVisible(FALSE);
+                floater->setTransientVisible(false);
             }
         }
     }
diff --git a/indra/newview/lltransientfloatermgr.h b/indra/newview/lltransientfloatermgr.h
index 18025cc9da..87a7b9e822 100644
--- a/indra/newview/lltransientfloatermgr.h
+++ b/indra/newview/lltransientfloatermgr.h
@@ -80,7 +80,7 @@ protected:
 public:
     virtual LLTransientFloaterMgr::ETransientGroup getGroup() = 0;
     bool isTransientDocked() { return mFloater->isDocked(); };
-    void setTransientVisible(BOOL visible) {mFloater->setVisible(visible); }
+    void setTransientVisible(bool visible) {mFloater->setVisible(visible); }
 
 private:
     LLFloater* mFloater;
diff --git a/indra/newview/lltranslate.cpp b/indra/newview/lltranslate.cpp
index fe83c7314b..b6fbcaa330 100644
--- a/indra/newview/lltranslate.cpp
+++ b/indra/newview/lltranslate.cpp
@@ -36,11 +36,11 @@
 #include "llversioninfo.h"
 #include "llviewercontrol.h"
 #include "llcoros.h"
-#include "json/reader.h"
 #include "llcorehttputil.h"
 #include "llurlregistry.h"
 #include "stringize.h"
 
+#include <boost/json.hpp>
 
 static const std::string AZURE_NOTRANSLATE_OPENING_TAG("<div translate=\"no\">");
 static const std::string AZURE_NOTRANSLATE_CLOSING_TAG("</div>");
@@ -344,11 +344,11 @@ public:
 
 private:
     static void parseErrorResponse(
-        const Json::Value& root,
+        const boost::json::value& root,
         int& status,
         std::string& err_msg);
     static bool parseTranslation(
-        const Json::Value& root,
+        const boost::json::value& root,
         std::string& translation,
         std::string& detected_lang);
     static std::string getAPIKey();
@@ -398,25 +398,22 @@ bool LLGoogleTranslationHandler::parseResponse(
 {
     const std::string& text = !body.empty() ? body : http_response["error_body"].asStringRef();
 
-    Json::Value root;
-    Json::Reader reader;
-
-    if (reader.parse(text, root))
+    boost::json::error_code ec;
+    boost::json::value root = boost::json::parse(text, ec);
+    if (ec.failed())
     {
-        if (root.isObject())
-        {
-            // Request succeeded, extract translation from the XML body.
-            if (parseTranslation(root, translation, detected_lang))
-                return true;
-
-            // Request failed. Extract error message from the XML body.
-            parseErrorResponse(root, status, err_msg);
-        }
+        err_msg = ec.what();
+        return false;
     }
-    else
+
+    if (root.is_object())
     {
-        // XML parsing failed. Extract error message from the XML parser.
-        err_msg = reader.getFormatedErrorMessages();
+        // Request succeeded, extract translation from the XML body.
+        if (parseTranslation(root, translation, detected_lang))
+            return true;
+
+        // Request failed. Extract error message from the XML body.
+        parseErrorResponse(root, status, err_msg);
     }
 
     return false;
@@ -430,48 +427,55 @@ bool LLGoogleTranslationHandler::isConfigured() const
 
 // static
 void LLGoogleTranslationHandler::parseErrorResponse(
-    const Json::Value& root,
+    const boost::json::value& root,
     int& status,
     std::string& err_msg)
 {
-    const Json::Value& error = root.get("error", 0);
-    if (!error.isObject() || !error.isMember("message") || !error.isMember("code"))
+    boost::json::error_code ec;
+    auto message = root.find_pointer("/data/message", ec);
+    auto code = root.find_pointer("/data/code", ec);
+    if (!message || !code)
+    {
+        return;
+    }
+
+    auto message_val = boost::json::try_value_to<std::string>(*message);
+    auto code_val = boost::json::try_value_to<int>(*code);
+    if (!message_val || !code_val)
     {
         return;
     }
 
-    err_msg = error["message"].asString();
-    status = error["code"].asInt();
+    err_msg = message_val.value();
+    status = code_val.value();
 }
 
 // static
 bool LLGoogleTranslationHandler::parseTranslation(
-    const Json::Value& root,
+    const boost::json::value& root,
     std::string& translation,
     std::string& detected_lang)
 {
-    // JsonCpp is prone to aborting the program on failed assertions,
-    // so be super-careful and verify the response format.
-    const Json::Value& data = root.get("data", 0);
-    if (!data.isObject() || !data.isMember("translations"))
-    {
-        return false;
-    }
+    boost::json::error_code ec;
+    auto translated_text = root.find_pointer("/data/translations/0/translatedText", ec);
+    if (!translated_text) return false;
 
-    const Json::Value& translations = data["translations"];
-    if (!translations.isArray() || translations.size() == 0)
+    auto text_val = boost::json::try_value_to<std::string>(*translated_text);
+    if (!text_val)
     {
+        LL_WARNS() << "Failed to parse translation" << text_val.error() << LL_ENDL;
         return false;
     }
 
-    const Json::Value& first = translations[0U];
-    if (!first.isObject() || !first.isMember("translatedText"))
+    translation = text_val.value();
+
+    auto language = root.find_pointer("/data/translations/0/detectedSourceLanguage", ec);
+    if (language)
     {
-        return false;
+        auto lang_val = boost::json::try_value_to<std::string>(*language);
+        detected_lang = lang_val ? lang_val.value() : "";
     }
 
-    translation = first["translatedText"].asString();
-    detected_lang = first.get("detectedSourceLanguage", "").asString();
     return true;
 }
 
@@ -652,12 +656,11 @@ bool LLAzureTranslationHandler::checkVerificationResponse(
     // Expected: "{\"error\":{\"code\":400000,\"message\":\"One of the request inputs is not valid.\"}}"
     // But for now just verify response is a valid json
 
-    Json::Value root;
-    Json::Reader reader;
-
-    if (!reader.parse(response["error_body"].asString(), root))
+    boost::json::error_code ec;
+    boost::json::value root = boost::json::parse(response["error_body"].asString(), ec);
+    if (ec.failed())
     {
-        LL_DEBUGS("Translate") << "Failed to parse error_body:" << reader.getFormatedErrorMessages() << LL_ENDL;
+        LL_DEBUGS("Translate") << "Failed to parse error_body:" << ec.what() << LL_ENDL;
         return false;
     }
 
@@ -676,57 +679,36 @@ bool LLAzureTranslationHandler::parseResponse(
     if (status != HTTP_OK)
     {
         if (http_response.has("error_body"))
-        err_msg = parseErrorResponse(http_response["error_body"].asString());
+            err_msg = parseErrorResponse(http_response["error_body"].asString());
         return false;
     }
 
     //Example:
     // "[{\"detectedLanguage\":{\"language\":\"en\",\"score\":1.0},\"translations\":[{\"text\":\"Hello, what is your name?\",\"to\":\"en\"}]}]"
 
-    Json::Value root;
-    Json::Reader reader;
-
-    if (!reader.parse(body, root))
+    boost::json::error_code ec;
+    boost::json::value root = boost::json::parse(body, ec);
+    if (ec.failed())
     {
-        err_msg = reader.getFormatedErrorMessages();
+        err_msg = ec.what();
         return false;
     }
+    auto language = root.find_pointer("/0/detectedLanguage/language", ec);
+    if (!language) return false;
 
-    if (!root.isArray()) // empty response? should not happen
-    {
-        return false;
-    }
+    auto translated_text = root.find_pointer("/0/translations/0/text", ec);
+    if (!translated_text) return false;
 
-    // Request succeeded, extract translation from the response.
-
-    const Json::Value& data = root[0U];
-    if (!data.isObject()
-        || !data.isMember("detectedLanguage")
-        || !data.isMember("translations"))
-    {
-        return false;
-    }
-
-    const Json::Value& detectedLanguage = data["detectedLanguage"];
-    if (!detectedLanguage.isObject() || !detectedLanguage.isMember("language"))
-    {
-        return false;
-    }
-    detected_lang = detectedLanguage["language"].asString();
-
-    const Json::Value& translations = data["translations"];
-    if (!translations.isArray() || translations.size() == 0)
-    {
-        return false;
-    }
-
-    const Json::Value& first = translations[0U];
-    if (!first.isObject() || !first.isMember("text"))
+    auto lang_val = boost::json::try_value_to<std::string>(*language);
+    auto text_val = boost::json::try_value_to<std::string>(*translated_text);
+    if (!lang_val || !text_val)
     {
+        LL_WARNS() << "Failed to parse translation" << lang_val.error() << text_val.error() << LL_ENDL;
         return false;
     }
 
-    translation = LLURI::unescape(first["text"].asString());
+    detected_lang = lang_val.value();
+    translation = text_val.value();
 
     return true;
 }
@@ -744,27 +726,25 @@ std::string LLAzureTranslationHandler::parseErrorResponse(
     // Expected: "{\"error\":{\"code\":400000,\"message\":\"One of the request inputs is not valid.\"}}"
     // But for now just verify response is a valid json with an error
 
-    Json::Value root;
-    Json::Reader reader;
-
-    if (!reader.parse(body, root))
+    boost::json::error_code ec;
+    boost::json::value root = boost::json::parse(body, ec);
+    if (ec.failed())
     {
-        return std::string();
+        return {};
     }
 
-    if (!root.isObject() || !root.isMember("error"))
+    auto err_msg = root.find_pointer("/error/message", ec);
+    if (!err_msg)
     {
-        return std::string();
+        return {};
     }
 
-    const Json::Value& error_map = root["error"];
-
-    if (!error_map.isObject() || !error_map.isMember("message"))
+    auto err_msg_val = boost::json::try_value_to<std::string>(*err_msg);
+    if (!err_msg_val)
     {
-        return std::string();
+        return {};
     }
-
-    return error_map["message"].asString();
+    return err_msg_val.value();
 }
 
 // static
@@ -976,39 +956,39 @@ bool LLDeepLTranslationHandler::parseResponse(
     //Example:
     // "{\"translations\":[{\"detected_source_language\":\"EN\",\"text\":\"test\"}]}"
 
-    Json::Value root;
-    Json::Reader reader;
-
-    if (!reader.parse(body, root))
+    boost::json::error_code ec;
+    boost::json::value root = boost::json::parse(body, ec);
+    if (ec.failed())
     {
-        err_msg = reader.getFormatedErrorMessages();
+        err_msg = ec.message();
         return false;
     }
 
-    if (!root.isObject()
-        || !root.isMember("translations")) // empty response? should not happen
+    auto detected_langp = root.find_pointer("/translations/0/detected_source_language", ec);
+    if (!detected_langp || ec.failed()) // empty response? should not happen
     {
+        err_msg = ec.message();
         return false;
     }
 
     // Request succeeded, extract translation from the response.
-    const Json::Value& translations = root["translations"];
-    if (!translations.isArray() || translations.size() == 0)
+    auto text_valp = root.find_pointer("/translations/0/text", ec);
+    if (!text_valp || ec.failed())
     {
+        err_msg = ec.message();
         return false;
     }
 
-    const Json::Value& data= translations[0U];
-    if (!data.isObject()
-        || !data.isMember("detected_source_language")
-        || !data.isMember("text"))
+    auto lang_result = boost::json::try_value_to<std::string>(*detected_langp);
+    auto text_result = boost::json::try_value_to<std::string>(*text_valp);
+    if (!lang_result || !text_result)
     {
         return false;
     }
 
-    detected_lang = data["detected_source_language"].asString();
+    detected_lang = lang_result.value();
     LLStringUtil::toLower(detected_lang);
-    translation = data["text"].asString();
+    translation = text_result.value();
 
     return true;
 }
@@ -1024,21 +1004,24 @@ std::string LLDeepLTranslationHandler::parseErrorResponse(
     const std::string& body)
 {
     // Example: "{\"message\":\"One of the request inputs is not valid.\"}"
-
-    Json::Value root;
-    Json::Reader reader;
-
-    if (!reader.parse(body, root))
+    boost::json::error_code ec;
+    boost::json::value root = boost::json::parse(body, ec);
+    if (ec.failed())
     {
-        return std::string();
+        return {};
     }
 
-    if (!root.isObject() || !root.isMember("message"))
+    auto message_ptr = root.find_pointer("/message", ec);
+    if (!message_ptr || ec.failed())
     {
-        return std::string();
+        return {};
     }
 
-    return root["message"].asString();
+    auto message_val = boost::json::try_value_to<std::string>(*message_ptr);
+    if (!message_val)
+        return {};
+
+    return message_val.value();
 }
 
 // static
@@ -1165,7 +1148,7 @@ std::string LLTranslate::addNoTranslateTags(std::string mesg)
             upd_msg.insert(dif + match.getStart(), AZURE_NOTRANSLATE_OPENING_TAG);
             upd_msg.insert(dif + AZURE_NOTRANSLATE_OPENING_TAG.size() + match.getEnd() + 1, AZURE_NOTRANSLATE_CLOSING_TAG);
             mesg.erase(match.getStart(), match.getEnd() - match.getStart());
-            dif += match.getEnd() - match.getStart() + AZURE_NOTRANSLATE_OPENING_TAG.size() + AZURE_NOTRANSLATE_CLOSING_TAG.size();
+            dif += match.getEnd() - match.getStart() + static_cast<S32>(AZURE_NOTRANSLATE_OPENING_TAG.size() + AZURE_NOTRANSLATE_CLOSING_TAG.size());
         }
         return upd_msg;
     }
@@ -1187,9 +1170,9 @@ std::string LLTranslate::removeNoTranslateTags(std::string mesg)
     {
         std::string upd_msg(mesg);
         LLUrlMatch match;
-        S32 opening_tag_size = AZURE_NOTRANSLATE_OPENING_TAG.size();
-        S32 closing_tag_size = AZURE_NOTRANSLATE_CLOSING_TAG.size();
-        S32 dif = 0;
+        auto opening_tag_size = AZURE_NOTRANSLATE_OPENING_TAG.size();
+        auto closing_tag_size = AZURE_NOTRANSLATE_CLOSING_TAG.size();
+        size_t dif = 0;
         //remove 'no-translate' tags we added to the links before
         while (LLUrlRegistry::instance().findUrl(mesg, match))
         {
diff --git a/indra/newview/lltranslate.h b/indra/newview/lltranslate.h
index 67f528c090..0ad769b27f 100644
--- a/indra/newview/lltranslate.h
+++ b/indra/newview/lltranslate.h
@@ -32,11 +32,6 @@
 
 #include "llsingleton.h"
 
-namespace Json
-{
-    class Value;
-}
-
 class LLTranslationAPIHandler;
 /**
  * Entry point for machine translation services.
diff --git a/indra/newview/lluiavatar.cpp b/indra/newview/lluiavatar.cpp
index 1742126ba3..c687c4f162 100644
--- a/indra/newview/lluiavatar.cpp
+++ b/indra/newview/lluiavatar.cpp
@@ -37,7 +37,7 @@
 LLUIAvatar::LLUIAvatar(const LLUUID& id, const LLPCode pcode, LLViewerRegion* regionp) :
     LLVOAvatar(id, pcode, regionp)
 {
-    mIsDummy = TRUE;
+    mIsDummy = true;
     mIsUIAvatar = true;
 }
 
diff --git a/indra/newview/lluiavatar.h b/indra/newview/lluiavatar.h
index c539539306..3df3f5afa2 100644
--- a/indra/newview/lluiavatar.h
+++ b/indra/newview/lluiavatar.h
@@ -39,6 +39,7 @@ public:
     LLUIAvatar(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp);
     virtual void            initInstance(); // Called after construction to initialize the class.
     virtual ~LLUIAvatar();
+    virtual bool isBuddy() const { return false; }
 };
 
 #endif //LL_CONTROLAVATAR_H
diff --git a/indra/newview/lluploaddialog.cpp b/indra/newview/lluploaddialog.cpp
index e019af2fe8..4961d38f8e 100644
--- a/indra/newview/lluploaddialog.cpp
+++ b/indra/newview/lluploaddialog.cpp
@@ -61,7 +61,7 @@ void LLUploadDialog::modalUploadFinished()
 LLUploadDialog::LLUploadDialog( const std::string& msg)
   : LLPanel()
 {
-    setBackgroundVisible( TRUE );
+    setBackgroundVisible( true );
 
     if( LLUploadDialog::sDialog )
     {
@@ -102,7 +102,7 @@ void LLUploadDialog::setMessage( const std::string& msg)
     S32 max_msg_width = 0;
     std::list<std::string> msg_lines;
 
-    S32 size = msg.size() + 1;
+    auto size = msg.size() + 1;
     std::vector<char> temp_msg(size); // non-const copy to make strtok happy
     strcpy( &temp_msg[0], msg.c_str());
     char* token = strtok( &temp_msg[0], "\n" );
@@ -117,9 +117,9 @@ void LLUploadDialog::setMessage( const std::string& msg)
 
     S32 line_height = font->getLineHeight();
     S32 dialog_width = max_msg_width + 2 * HPAD;
-    S32 dialog_height = line_height * msg_lines.size() + 2 * VPAD;
+    S32 dialog_height = line_height * static_cast<S32>(msg_lines.size()) + 2 * VPAD;
 
-    reshape( dialog_width, dialog_height, FALSE );
+    reshape( dialog_width, dialog_height, false );
 
     // Message
     S32 msg_x = (getRect().getWidth() - max_msg_width) / 2;
@@ -127,7 +127,7 @@ void LLUploadDialog::setMessage( const std::string& msg)
     int line_num;
     for (line_num=0; line_num<16; ++line_num)
     {
-        mLabelBox[line_num]->setVisible(FALSE);
+        mLabelBox[line_num]->setVisible(false);
     }
     line_num = 0;
     for (std::list<std::string>::iterator iter = msg_lines.begin();
@@ -139,7 +139,7 @@ void LLUploadDialog::setMessage( const std::string& msg)
         mLabelBox[line_num]->setRect(msg_rect);
         mLabelBox[line_num]->setText(cur_line);
         mLabelBox[line_num]->setColor( LLUIColorTable::instance().getColor( "LabelTextColor" ) );
-        mLabelBox[line_num]->setVisible(TRUE);
+        mLabelBox[line_num]->setVisible(true);
         msg_y -= line_height;
         ++line_num;
     }
diff --git a/indra/newview/llurl.cpp b/indra/newview/llurl.cpp
index 2cb7f1a877..6bff31122e 100644
--- a/indra/newview/llurl.cpp
+++ b/indra/newview/llurl.cpp
@@ -71,7 +71,7 @@ void LLURL::init(const char * url)
 
     char *parse;
     char *leftover_url = url_copy;
-    S32 span = 0;
+    size_t span = 0;
 
     // copy and lop off tag
     if ((parse = strchr(url_copy,'#')))
@@ -161,9 +161,9 @@ bool LLURL::operator==(const LLURL &rhs) const
         || (strcmp(mTag, rhs.mTag))
         )
     {
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 bool LLURL::operator!=(const LLURL& rhs) const
diff --git a/indra/newview/llurl.h b/indra/newview/llurl.h
index 214cf09da1..97b449d55f 100644
--- a/indra/newview/llurl.h
+++ b/indra/newview/llurl.h
@@ -77,7 +77,7 @@ public:
 
     virtual const char *updateRelativePath(const LLURL &url);
 
-    virtual BOOL  isExtension(const char *compare) {return (!strcmp(mExtension,compare));};
+    virtual bool  isExtension(const char *compare) {return (!strcmp(mExtension,compare));};
 
 public:
 
diff --git a/indra/newview/llurllineeditorctrl.cpp b/indra/newview/llurllineeditorctrl.cpp
index c3b6167a7e..de0ed645eb 100644
--- a/indra/newview/llurllineeditorctrl.cpp
+++ b/indra/newview/llurllineeditorctrl.cpp
@@ -89,5 +89,5 @@ void LLURLLineEditor::copyEscapedURLToClipboard()
     else // human-readable location
         text_to_copy = utf8str_to_wstring(unescaped_text);
 
-    LLClipboard::instance().copyToClipboard(text_to_copy, 0, text_to_copy.size());
+    LLClipboard::instance().copyToClipboard(text_to_copy, 0, static_cast<S32>(text_to_copy.size()));
 }
diff --git a/indra/newview/llurllineeditorctrl.h b/indra/newview/llurllineeditorctrl.h
index 5d2203ae46..f5bf62c7d9 100644
--- a/indra/newview/llurllineeditorctrl.h
+++ b/indra/newview/llurllineeditorctrl.h
@@ -82,7 +82,7 @@ private:
         std::string mText;
         S32     mCursorPos;
         S32     mScrollHPos;
-        BOOL    mIsSelecting;
+        bool    mIsSelecting;
         S32     mSelectionStart;
         S32     mSelectionEnd;
     }; // end class LLURLLineEditorRollback
diff --git a/indra/newview/llurlwhitelist.cpp b/indra/newview/llurlwhitelist.cpp
index f5651646a6..e2d2fe00e2 100644
--- a/indra/newview/llurlwhitelist.cpp
+++ b/indra/newview/llurlwhitelist.cpp
@@ -128,8 +128,8 @@ bool LLUrlWhiteList::clear ()
 std::string url_cleanup(std::string pattern)
 {
     LLStringUtil::trim(pattern);
-    S32 length = pattern.length();
-    S32 position = 0;
+    size_t length = pattern.length();
+    size_t position = 0;
     std::string::reverse_iterator it = pattern.rbegin();
     ++it;   // skip last char, might be '/'
     ++position;
@@ -139,7 +139,7 @@ std::string url_cleanup(std::string pattern)
         if (c == '/')
         {
             // found second to last '/'
-            S32 desired_length = length - position;
+            auto desired_length = length - position;
             LLStringUtil::truncate(pattern, desired_length);
             break;
         }
diff --git a/indra/newview/llvectorperfoptions.cpp b/indra/newview/llvectorperfoptions.cpp
deleted file mode 100644
index 91ca56fefe..0000000000
--- a/indra/newview/llvectorperfoptions.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-/**
- * @file llvectorperfoptions.h
- * @brief SSE/SSE2 vector math performance options.
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#include "llviewerprecompiledheaders.h"
-
-// Deprecated - moved into llviewerjointmesh
diff --git a/indra/newview/llvectorperfoptions.h b/indra/newview/llvectorperfoptions.h
deleted file mode 100644
index 5bfc48b240..0000000000
--- a/indra/newview/llvectorperfoptions.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/**
- * @file llvectorperfoptions.h
- * @brief SSE/SSE2 vector math performance options.
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_VECTORPERFOPTIONS_H
-#define LL_VECTORPERFOPTIONS_H
-
-// Deprecated - moved into llviewerjointmesh
-
-#endif
diff --git a/indra/newview/llversioninfo.cpp b/indra/newview/llversioninfo.cpp
index 3c5881841f..e598303305 100644
--- a/indra/newview/llversioninfo.cpp
+++ b/indra/newview/llversioninfo.cpp
@@ -135,7 +135,7 @@ LLVersionInfo::ViewerMaturity LLVersionInfo::getViewerMaturity()
     std::string channel = getChannel();
 
     static const boost::regex is_test_channel("\\bTest\\b");
-    static const boost::regex is_beta_channel("\\bBeta\\b");
+    static const boost::regex is_beta_channel("\\b(Beta|Develop)\\b");  // Develop is an alias for Beta
     static const boost::regex is_project_channel("\\bProject\\b");
     static const boost::regex is_release_channel("\\bRelease\\b");
 
diff --git a/indra/newview/llviewerassetstorage.cpp b/indra/newview/llviewerassetstorage.cpp
index 2fe4018aba..26707f5d9a 100644
--- a/indra/newview/llviewerassetstorage.cpp
+++ b/indra/newview/llviewerassetstorage.cpp
@@ -199,12 +199,12 @@ void LLViewerAssetStorage::storeAssetData(
             // Read the data from the cache if it'll fit in this packet.
             if (asset_size + 100 < MTUBYTES)
             {
-                BOOL res = vfile.read(buffer, asset_size);      /* Flawfinder: ignore */
+                bool res = vfile.read(buffer, asset_size);      /* Flawfinder: ignore */
                 S32 bytes_read = res ? vfile.getLastBytesRead() : 0;
 
                 if( bytes_read == asset_size )
                 {
-                    req->mDataSentInFirstPacket = TRUE;
+                    req->mDataSentInFirstPacket = true;
                     //LL_INFOS() << "LLViewerAssetStorage::createAsset sending data in first packet" << LL_ENDL;
                 }
                 else
@@ -361,8 +361,8 @@ void LLViewerAssetStorage::_queueDataRequest(
     LLAssetType::EType atype,
     LLGetAssetCallback callback,
     void *user_data,
-    BOOL duplicate,
-    BOOL is_priority)
+    bool duplicate,
+    bool is_priority)
 {
     mCountRequests++;
     queueRequestHttp(uuid, atype, callback, user_data, duplicate, is_priority);
@@ -373,8 +373,8 @@ void LLViewerAssetStorage::queueRequestHttp(
     LLAssetType::EType atype,
     LLGetAssetCallback callback,
     void *user_data,
-    BOOL duplicate,
-    BOOL is_priority)
+    bool duplicate,
+    bool is_priority)
 {
     LL_DEBUGS("ViewerAsset") << "Request asset via HTTP " << uuid << " type " << LLAssetType::lookup(atype) << LL_ENDL;
 
@@ -542,7 +542,7 @@ void LLViewerAssetStorage::assetRequestCoro(
 
         const LLSD::Binary &raw = result[LLCoreHttpUtil::HttpCoroutineAdapter::HTTP_RESULTS_RAW].asBinary();
 
-        S32 size = raw.size();
+        S32 size = static_cast<S32>(raw.size());
         if (size > 0)
         {
             mTotalBytesFetched += size;
diff --git a/indra/newview/llviewerassetstorage.h b/indra/newview/llviewerassetstorage.h
index 19eb26e809..fdb8af7457 100644
--- a/indra/newview/llviewerassetstorage.h
+++ b/indra/newview/llviewerassetstorage.h
@@ -51,7 +51,7 @@ public:
         bool temp_file = false,
         bool is_priority = false,
         bool store_local = false,
-        bool user_waiting=FALSE,
+        bool user_waiting=false,
         F64Seconds timeout=LL_ASSET_STORAGE_TIMEOUT) override;
 
     void storeAssetData(
@@ -62,7 +62,7 @@ public:
         void* user_data,
         bool temp_file = false,
         bool is_priority = false,
-        bool user_waiting=FALSE,
+        bool user_waiting=false,
         F64Seconds timeout=LL_ASSET_STORAGE_TIMEOUT) override;
 
 protected:
@@ -70,15 +70,15 @@ protected:
                            LLAssetType::EType type,
                            LLGetAssetCallback callback,
                            void *user_data,
-                           BOOL duplicate,
-                           BOOL is_priority) override;
+                           bool duplicate,
+                           bool is_priority) override;
 
     void queueRequestHttp(const LLUUID& uuid,
                           LLAssetType::EType type,
                           LLGetAssetCallback callback,
                           void *user_data,
-                          BOOL duplicate,
-                          BOOL is_priority);
+                          bool duplicate,
+                          bool is_priority);
 
     void capsRecvForRegion(const LLUUID& region_id, std::string pumpname);
 
diff --git a/indra/newview/llviewerassettype.cpp b/indra/newview/llviewerassettype.cpp
index 3e3347ff33..f4c618c08d 100644
--- a/indra/newview/llviewerassettype.cpp
+++ b/indra/newview/llviewerassettype.cpp
@@ -89,6 +89,8 @@ LLViewerAssetDictionary::LLViewerAssetDictionary()
     addEntry(LLViewerAssetType::AT_NONE,                new ViewerAssetEntry(DAD_NONE));
     addEntry(LLViewerAssetType::AT_SETTINGS,            new ViewerAssetEntry(DAD_SETTINGS));
     addEntry(LLViewerAssetType::AT_MATERIAL,            new ViewerAssetEntry(DAD_MATERIAL));
+    addEntry(LLViewerAssetType::AT_GLTF,                new ViewerAssetEntry(DAD_GLTF));
+    addEntry(LLViewerAssetType::AT_GLTF_BIN,            new ViewerAssetEntry(DAD_GLTF_BIN));
 };
 
 EDragAndDropType LLViewerAssetType::lookupDragAndDropType(EType asset_type)
diff --git a/indra/newview/llviewerassetupload.cpp b/indra/newview/llviewerassetupload.cpp
index a080e3dd9e..337c18f218 100644
--- a/indra/newview/llviewerassetupload.cpp
+++ b/indra/newview/llviewerassetupload.cpp
@@ -299,10 +299,18 @@ void LLResourceUploadInfo::assignDefaults()
         mDescription = "(No Description)";
     }
 
+    if (mAssetType == LLAssetType::AT_GLTF ||
+        mAssetType == LLAssetType::AT_GLTF_BIN)
+    {
+        mFolderId = LLUUID::null;
+    }
+    else
+    {
     mFolderId = gInventory.findUserDefinedCategoryUUIDForType(
         (mDestinationFolderType == LLFolderType::FT_NONE) ?
         (LLFolderType::EType)mAssetType : mDestinationFolderType);
 }
+}
 
 std::string LLResourceUploadInfo::getDisplayName() const
 {
@@ -409,7 +417,7 @@ LLSD LLNewFileResourceUploadInfo::exportTempFile()
         // Unknown extension
         errorMessage = llformat(LLTrans::getString("UnknownFileExtension").c_str(), exten.c_str());
         errorLabel = "ErrorMessage";
-        error = TRUE;;
+        error = true;;
     }
     else if (assetType == LLAssetType::AT_TEXTURE)
     {
@@ -508,7 +516,7 @@ LLSD LLNewFileResourceUploadInfo::exportTempFile()
         // Unknown extension
         errorMessage = llformat(LLTrans::getString("UnknownFileExtension").c_str(), exten.c_str());
         errorLabel = "ErrorMessage";
-        error = TRUE;;
+        error = true;;
     }
 
     if (error)
@@ -598,7 +606,7 @@ LLSD LLNewBufferedResourceUploadInfo::exportTempFile()
 
     // copy buffer to the cache for upload
     LLFileSystem file(getAssetId(), getAssetType(), LLFileSystem::APPEND);
-    file.write((U8*) mBuffer.c_str(), mBuffer.size());
+    file.write((U8*) mBuffer.c_str(), static_cast<S32>(mBuffer.size()));
 
     return LLSD();
 }
@@ -654,6 +662,8 @@ LLBufferedAssetUploadInfo::LLBufferedAssetUploadInfo(LLUUID itemId, LLPointer<LL
 {
     setItemId(itemId);
 
+    LLImageDataSharedLock lock(image);
+
     EImageCodec codec = static_cast<EImageCodec>(image->getCodec());
 
     switch (codec)
@@ -698,7 +708,7 @@ LLSD LLBufferedAssetUploadInfo::prepareUpload()
 
     LLFileSystem file(getAssetId(), getAssetType(), LLFileSystem::APPEND);
 
-    S32 size = mContents.length() + 1;
+    S32 size = static_cast<S32>(mContents.length()) + 1;
     file.write((U8*)mContents.c_str(), size);
 
     mStoredToCache = true;
@@ -930,7 +940,7 @@ void LLViewerAssetUpload::AssetInventoryUploadCoproc(LLCoreHttpUtil::HttpCorouti
 
             // Show the preview panel for textures and sounds to let
             // user know that the image (or snapshot) arrived intact.
-            LLInventoryPanel* panel = LLInventoryPanel::getActiveInventoryPanel(FALSE);
+            LLInventoryPanel* panel = LLInventoryPanel::getActiveInventoryPanel(false);
             LLInventoryPanel::openInventoryPanelAndSetSelection(true, serverInventoryItem, false, false, !panel);
 
             // restore keyboard focus
diff --git a/indra/newview/llvieweraudio.cpp b/indra/newview/llvieweraudio.cpp
index e9163abb4f..b3b4f43e57 100644
--- a/indra/newview/llvieweraudio.cpp
+++ b/indra/newview/llvieweraudio.cpp
@@ -76,7 +76,7 @@ LLViewerAudio::~LLViewerAudio()
 
 void LLViewerAudio::registerIdleListener()
 {
-    if(mIdleListnerActive==false)
+    if (!mIdleListnerActive)
     {
         mIdleListnerActive = true;
         doOnIdleRepeating(boost::bind(boost::bind(&LLViewerAudio::onIdleUpdate, this)));
@@ -355,9 +355,9 @@ void init_audio()
 
 // load up our initial set of sounds we'll want so they're in memory and ready to be played
 
-    BOOL mute_audio = gSavedSettings.getBOOL("MuteAudio");
+    bool mute_audio = gSavedSettings.getBOOL("MuteAudio");
 
-    if (!mute_audio && FALSE == gSavedSettings.getBOOL("NoPreload"))
+    if (!mute_audio && false == gSavedSettings.getBOOL("NoPreload"))
     {
         gAudiop->preloadSound(LLUUID(gSavedSettings.getString("UISndAlert")));
         gAudiop->preloadSound(LLUUID(gSavedSettings.getString("UISndBadKeystroke")));
@@ -398,10 +398,10 @@ void init_audio()
 void audio_update_volume(bool force_update)
 {
     F32 master_volume = gSavedSettings.getF32("AudioLevelMaster");
-    BOOL mute_audio = gSavedSettings.getBOOL("MuteAudio");
+    bool mute_audio = gSavedSettings.getBOOL("MuteAudio");
 
     LLProgressView* progress = gViewerWindow->getProgressView();
-    BOOL progress_view_visible = FALSE;
+    bool progress_view_visible = false;
 
     if (progress)
     {
@@ -410,7 +410,7 @@ void audio_update_volume(bool force_update)
 
     if (!gViewerWindow->getActive() && gSavedSettings.getBOOL("MuteWhenMinimized"))
     {
-        mute_audio = TRUE;
+        mute_audio = true;
     }
     F32 mute_volume = mute_audio ? 0.0f : 1.0f;
 
@@ -464,7 +464,7 @@ void audio_update_volume(bool force_update)
         }
 
         F32 music_volume = gSavedSettings.getF32("AudioLevelMusic");
-        BOOL music_muted = gSavedSettings.getBOOL("MuteMusic");
+        bool music_muted = gSavedSettings.getBOOL("MuteMusic");
         F32 fade_volume = LLViewerAudio::getInstance()->getFadeVolume();
 
         music_volume = mute_volume * master_volume * music_volume * fade_volume;
@@ -473,7 +473,7 @@ void audio_update_volume(bool force_update)
 
     // Streaming Media
     F32 media_volume = gSavedSettings.getF32("AudioLevelMedia");
-    BOOL media_muted = gSavedSettings.getBOOL("MuteMedia");
+    bool media_muted = gSavedSettings.getBOOL("MuteMedia");
     media_volume = mute_volume * master_volume * media_volume;
     LLViewerMedia::getInstance()->setVolume( media_muted ? 0.0f : media_volume );
 
@@ -482,7 +482,7 @@ void audio_update_volume(bool force_update)
     {
         F32 voice_volume = gSavedSettings.getF32("AudioLevelVoice");
         voice_volume = mute_volume * master_volume * voice_volume;
-        BOOL voice_mute = gSavedSettings.getBOOL("MuteVoice");
+        bool voice_mute = gSavedSettings.getBOOL("MuteVoice");
         LLVoiceClient *voice_inst = LLVoiceClient::getInstance();
         voice_inst->setVoiceVolume(voice_mute ? 0.f : voice_volume);
         voice_inst->setMicGain(voice_mute ? 0.f : gSavedSettings.getF32("AudioLevelMic"));
@@ -554,8 +554,13 @@ void audio_update_wind(bool force_update)
         // don't use the setter setMaxWindGain() because we don't
         // want to screw up the fade-in on startup by setting actual source gain
         // outside the fade-in.
-        F32 master_volume  = gSavedSettings.getBOOL("MuteAudio") ? 0.f : gSavedSettings.getF32("AudioLevelMaster");
-        F32 ambient_volume = gSavedSettings.getBOOL("MuteAmbient") ? 0.f : gSavedSettings.getF32("AudioLevelAmbient");
+        static LLCachedControl<bool> mute_audio(gSavedSettings, "MuteAudio");
+        static LLCachedControl<bool> mute_ambient(gSavedSettings, "MuteAmbient");
+        static LLCachedControl<F32> level_master(gSavedSettings, "AudioLevelMaster");
+        static LLCachedControl<F32> level_ambient(gSavedSettings, "AudioLevelAmbient");
+
+        F32 master_volume  = mute_audio() ? 0.f : level_master();
+        F32 ambient_volume = mute_ambient() ? 0.f : level_ambient();
         F32 max_wind_volume = master_volume * ambient_volume;
 
         const F32 WIND_SOUND_TRANSITION_TIME = 2.f;
diff --git a/indra/newview/llviewercamera.cpp b/indra/newview/llviewercamera.cpp
index 8487efc8dd..7b9aba96ed 100644
--- a/indra/newview/llviewercamera.cpp
+++ b/indra/newview/llviewercamera.cpp
@@ -94,7 +94,13 @@ LLViewerCamera::LLViewerCamera() : LLCamera()
     mZoomSubregion = 1;
     mAverageSpeed = 0.f;
     mAverageAngularSpeed = 0.f;
-    gSavedSettings.getControl("CameraAngle")->getCommitSignal()->connect(boost::bind(&LLViewerCamera::updateCameraAngle, this, _2));
+
+    mCameraAngleChangedSignal = gSavedSettings.getControl("CameraAngle")->getCommitSignal()->connect(boost::bind(&LLViewerCamera::updateCameraAngle, this, _2));
+}
+
+LLViewerCamera::~LLViewerCamera()
+{
+    mCameraAngleChangedSignal.disconnect();
 }
 
 void LLViewerCamera::updateCameraLocation(const LLVector3 &center, const LLVector3 &up_direction, const LLVector3 &point_of_interest)
@@ -196,7 +202,7 @@ void LLViewerCamera::calcProjection(const F32 far_distance) const
 // height.
 
 //static
-void LLViewerCamera::updateFrustumPlanes(LLCamera& camera, BOOL ortho, BOOL zflip, BOOL no_hacks)
+void LLViewerCamera::updateFrustumPlanes(LLCamera& camera, bool ortho, bool zflip, bool no_hacks)
 {
 #if GLU_VERSION_1_1
     GLint* viewport = (GLint*) gGLViewport;
@@ -294,17 +300,17 @@ void LLViewerCamera::updateFrustumPlanes(LLCamera& camera, BOOL ortho, BOOL zfli
 #endif // GLU_VERSION_1_1
 }
 
-void LLViewerCamera::setPerspective(BOOL for_selection,
+void LLViewerCamera::setPerspective(bool for_selection,
                                     S32 x, S32 y_from_bot, S32 width, S32 height,
-                                    BOOL limit_select_distance,
+                                    bool limit_select_distance,
                                     F32 z_near, F32 z_far)
 {
     F32 fov_y, aspect;
     fov_y = RAD_TO_DEG * getView();
-    BOOL z_default_far = FALSE;
+    bool z_default_far = false;
     if (z_far <= 0)
     {
-        z_default_far = TRUE;
+        z_default_far = true;
         z_far = getFar();
     }
     if (z_near <= 0)
@@ -446,11 +452,11 @@ void LLViewerCamera::projectScreenToPosAgent(const S32 screen_x, const S32 scree
 }
 
 // Uses the last GL matrices set in set_perspective to project a point from
-// the agent's region space to screen coordinates.  Returns TRUE if point in within
+// the agent's region space to screen coordinates.  Returns true if point in within
 // the current window.
-BOOL LLViewerCamera::projectPosAgentToScreen(const LLVector3 &pos_agent, LLCoordGL &out_point, const BOOL clamp) const
+bool LLViewerCamera::projectPosAgentToScreen(const LLVector3 &pos_agent, LLCoordGL &out_point, const bool clamp) const
 {
-    BOOL in_front = TRUE;
+    bool in_front = true;
     GLdouble    x, y, z;            // object's window coords, GL-style
 
     LLVector3 dir_to_point = pos_agent - getOrigin();
@@ -460,11 +466,11 @@ BOOL LLViewerCamera::projectPosAgentToScreen(const LLVector3 &pos_agent, LLCoord
     {
         if (clamp)
         {
-            return FALSE;
+            return false;
         }
         else
         {
-            in_front = FALSE;
+            in_front = false;
         }
     }
 
@@ -500,19 +506,19 @@ BOOL LLViewerCamera::projectPosAgentToScreen(const LLVector3 &pos_agent, LLCoord
         S32 int_x = lltrunc(x);
         S32 int_y = lltrunc(y);
 
-        BOOL valid = TRUE;
+        bool valid = true;
 
         if (clamp)
         {
             if (int_x < world_rect.mLeft)
             {
                 out_point.mX = world_rect.mLeft;
-                valid = FALSE;
+                valid = false;
             }
             else if (int_x > world_rect.mRight)
             {
                 out_point.mX = world_rect.mRight;
-                valid = FALSE;
+                valid = false;
             }
             else
             {
@@ -522,12 +528,12 @@ BOOL LLViewerCamera::projectPosAgentToScreen(const LLVector3 &pos_agent, LLCoord
             if (int_y < world_rect.mBottom)
             {
                 out_point.mY = world_rect.mBottom;
-                valid = FALSE;
+                valid = false;
             }
             else if (int_y > world_rect.mTop)
             {
                 out_point.mY = world_rect.mTop;
-                valid = FALSE;
+                valid = false;
             }
             else
             {
@@ -542,19 +548,19 @@ BOOL LLViewerCamera::projectPosAgentToScreen(const LLVector3 &pos_agent, LLCoord
 
             if (int_x < world_rect.mLeft)
             {
-                valid = FALSE;
+                valid = false;
             }
             else if (int_x > world_rect.mRight)
             {
-                valid = FALSE;
+                valid = false;
             }
             if (int_y < world_rect.mBottom)
             {
-                valid = FALSE;
+                valid = false;
             }
             else if (int_y > world_rect.mTop)
             {
-                valid = FALSE;
+                valid = false;
             }
 
             return in_front && valid;
@@ -563,24 +569,24 @@ BOOL LLViewerCamera::projectPosAgentToScreen(const LLVector3 &pos_agent, LLCoord
     else
 #endif // GLU_VERSION_1_1
     {
-        return FALSE;
+        return false;
     }
 }
 
 // Uses the last GL matrices set in set_perspective to project a point from
 // the agent's region space to the nearest edge in screen coordinates.
-// Returns TRUE if projection succeeds.
-BOOL LLViewerCamera::projectPosAgentToScreenEdge(const LLVector3 &pos_agent,
+// Returns true if projection succeeds.
+bool LLViewerCamera::projectPosAgentToScreenEdge(const LLVector3 &pos_agent,
                                                 LLCoordGL &out_point) const
 {
 #if GLU_VERSION_1_1
     LLVector3 dir_to_point = pos_agent - getOrigin();
     dir_to_point /= dir_to_point.magVec();
 
-    BOOL in_front = TRUE;
+    bool in_front = true;
     if (dir_to_point * getAtAxis() < 0.f)
     {
-        in_front = FALSE;
+        in_front = false;
     }
 
     LLRect world_view_rect = gViewerWindow->getWorldViewRectRaw();
@@ -621,7 +627,7 @@ BOOL LLViewerCamera::projectPosAgentToScreenEdge(const LLVector3 &pos_agent,
         if (x == center_x  &&  y == center_y)
         {
             // can't project to edge from exact center
-            return FALSE;
+            return false;
         }
 
         // find the line from center to local
@@ -718,10 +724,10 @@ BOOL LLViewerCamera::projectPosAgentToScreenEdge(const LLVector3 &pos_agent,
 
         out_point.mX = int_x + world_rect.mLeft;
         out_point.mY = int_y + world_rect.mBottom;
-        return TRUE;
+        return true;
     }
 #endif // GLU_VERSION_1_1
-    return FALSE;
+    return false;
 }
 
 
@@ -746,7 +752,7 @@ LLVector3 LLViewerCamera::roundToPixel(const LLVector3 &pos_agent)
     F32 dist = (pos_agent - getOrigin()).magVec();
     // Convert to screen space and back, preserving the depth.
     LLCoordGL screen_point;
-    if (!projectPosAgentToScreen(pos_agent, screen_point, FALSE))
+    if (!projectPosAgentToScreen(pos_agent, screen_point, false))
     {
         // Off the screen, just return the original position.
         return pos_agent;
@@ -768,14 +774,14 @@ LLVector3 LLViewerCamera::roundToPixel(const LLVector3 &pos_agent)
     return pos_agent_rounded;
 }
 
-BOOL LLViewerCamera::cameraUnderWater() const
+bool LLViewerCamera::cameraUnderWater() const
 {
     LLViewerRegion* regionp = LLWorld::instance().getRegionFromPosAgent(getOrigin());
 
     if (gPipeline.mHeroProbeManager.isMirrorPass())
     {
         // TODO: figure out how to handle this case
-        return FALSE;
+        return false;
     }
 
     if (!regionp)
@@ -785,26 +791,26 @@ BOOL LLViewerCamera::cameraUnderWater() const
 
     if(!regionp)
     {
-        return FALSE ;
+        return false ;
     }
 
     return getOrigin().mV[VZ] < regionp->getWaterHeight();
 }
 
-BOOL LLViewerCamera::areVertsVisible(LLViewerObject* volumep, BOOL all_verts)
+bool LLViewerCamera::areVertsVisible(LLViewerObject* volumep, bool all_verts)
 {
     S32 i, num_faces;
     LLDrawable* drawablep = volumep->mDrawable;
 
     if (!drawablep)
     {
-        return FALSE;
+        return false;
     }
 
     LLVolume* volume = volumep->getVolume();
     if (!volume)
     {
-        return FALSE;
+        return false;
     }
 
     LLVOVolume* vo_volume = (LLVOVolume*) volumep;
@@ -824,7 +830,7 @@ BOOL LLViewerCamera::areVertsVisible(LLViewerObject* volumep, BOOL all_verts)
     {
         const LLVolumeFace& face = volume->getVolumeFace(i);
 
-        for (U32 v = 0; v < face.mNumVertices; v++)
+        for (S32 v = 0; v < face.mNumVertices; v++)
         {
             const LLVector4a& src_vec = face.mPositions[v];
             LLVector4a vec;
@@ -836,7 +842,7 @@ BOOL LLViewerCamera::areVertsVisible(LLViewerObject* volumep, BOOL all_verts)
                 render_mata.affineTransform(t, vec);
             }
 
-            BOOL in_frustum = pointInFrustum(LLVector3(vec.getF32ptr())) > 0;
+            bool in_frustum = pointInFrustum(LLVector3(vec.getF32ptr())) > 0;
 
             if (( !in_frustum && all_verts) ||
                  (in_frustum && !all_verts))
@@ -848,7 +854,7 @@ BOOL LLViewerCamera::areVertsVisible(LLViewerObject* volumep, BOOL all_verts)
     return all_verts;
 }
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 // changes local camera and broadcasts change
 /* virtual */ void LLViewerCamera::setView(F32 vertical_fov_rads)
@@ -893,20 +899,18 @@ void LLViewerCamera::setDefaultFOV(F32 vertical_fov_rads)
     mCosHalfCameraFOV = cosf(mCameraFOVDefault * 0.5f);
 }
 
-BOOL LLViewerCamera::isDefaultFOVChanged()
+bool LLViewerCamera::isDefaultFOVChanged()
 {
     if(mPrevCameraFOVDefault != mCameraFOVDefault)
     {
         mPrevCameraFOVDefault = mCameraFOVDefault;
         return !gSavedSettings.getBOOL("IgnoreFOVZoomForLODs");
     }
-    return FALSE;
+    return false;
 }
 
-// static
-void LLViewerCamera::updateCameraAngle( void* user_data, const LLSD& value)
+void LLViewerCamera::updateCameraAngle(const LLSD& value)
 {
-    LLViewerCamera* self=(LLViewerCamera*)user_data;
-    self->setDefaultFOV(value.asReal());
+    setDefaultFOV(value.asReal());
 }
 
diff --git a/indra/newview/llviewercamera.h b/indra/newview/llviewercamera.h
index 3bbb33f82c..a204b85d88 100644
--- a/indra/newview/llviewercamera.h
+++ b/indra/newview/llviewercamera.h
@@ -35,14 +35,15 @@
 #include "lltrace.h"
 
 class LLViewerObject;
-const BOOL FOR_SELECTION = TRUE;
-const BOOL NOT_FOR_SELECTION = FALSE;
+const bool FOR_SELECTION = true;
+const bool NOT_FOR_SELECTION = false;
 
 class alignas(16) LLViewerCamera : public LLCamera, public LLSimpleton<LLViewerCamera>
 {
     LL_ALIGN_NEW
 public:
     LLViewerCamera();
+    ~LLViewerCamera();
 
     typedef enum
     {
@@ -64,17 +65,17 @@ public:
                                 const LLVector3 &up_direction,
                                 const LLVector3 &point_of_interest);
 
-    static void updateFrustumPlanes(LLCamera& camera, BOOL ortho = FALSE, BOOL zflip = FALSE, BOOL no_hacks = FALSE);
-    static void updateCameraAngle(void* user_data, const LLSD& value);
-    void setPerspective(BOOL for_selection, S32 x, S32 y_from_bot, S32 width, S32 height, BOOL limit_select_distance, F32 z_near = 0, F32 z_far = 0);
+    static void updateFrustumPlanes(LLCamera& camera, bool ortho = false, bool zflip = false, bool no_hacks = false);
+    void updateCameraAngle(const LLSD& value);
+    void setPerspective(bool for_selection, S32 x, S32 y_from_bot, S32 width, S32 height, bool limit_select_distance, F32 z_near = 0, F32 z_far = 0);
 
     const LLMatrix4 &getProjection() const;
     const LLMatrix4 &getModelview() const;
 
     // Warning!  These assume the current global matrices are correct
     void projectScreenToPosAgent(const S32 screen_x, const S32 screen_y, LLVector3* pos_agent ) const;
-    BOOL projectPosAgentToScreen(const LLVector3 &pos_agent, LLCoordGL &out_point, const BOOL clamp = TRUE) const;
-    BOOL projectPosAgentToScreenEdge(const LLVector3 &pos_agent, LLCoordGL &out_point) const;
+    bool projectPosAgentToScreen(const LLVector3 &pos_agent, LLCoordGL &out_point, const bool clamp = true) const;
+    bool projectPosAgentToScreenEdge(const LLVector3 &pos_agent, LLCoordGL &out_point) const;
 
     LLVector3 getVelocityDir() const {return mVelocityDir;}
     static LLTrace::CountStatHandle<>* getVelocityStat()           {return &sVelocityStat; }
@@ -92,10 +93,10 @@ public:
     void setDefaultFOV(F32 fov) ;
     F32 getDefaultFOV() { return mCameraFOVDefault; }
 
-    BOOL isDefaultFOVChanged();
+    bool isDefaultFOVChanged();
 
-    BOOL cameraUnderWater() const;
-    BOOL areVertsVisible(LLViewerObject* volumep, BOOL all_verts);
+    bool cameraUnderWater() const;
+    bool areVertsVisible(LLViewerObject* volumep, bool all_verts);
 
     const LLVector3 &getPointOfInterest() { return mLastPointOfInterest; }
     F32 getPixelMeterRatio() const              { return mPixelMeterRatio; }
@@ -125,6 +126,8 @@ protected:
     F32                 mZoomFactor;
     S16                 mZoomSubregion;
 
+    boost::signals2::connection mCameraAngleChangedSignal;
+
 public:
 };
 
diff --git a/indra/newview/llviewercontrol.cpp b/indra/newview/llviewercontrol.cpp
index 7997bcfbdb..cd6e780aa8 100644
--- a/indra/newview/llviewercontrol.cpp
+++ b/indra/newview/llviewercontrol.cpp
@@ -81,7 +81,7 @@
 #include <boost/algorithm/string.hpp>
 
 #ifdef TOGGLE_HACKED_GODLIKE_VIEWER
-BOOL                gHackGodmode = FALSE;
+bool                gHackGodmode = false;
 #endif
 
 // Should you contemplate changing the name "Global", please first grep for
@@ -94,9 +94,9 @@ LLControlGroup gWarningSettings("Warnings"); // persists ignored dialogs/warning
 
 std::string gLastRunVersion;
 
-extern BOOL gResizeScreenTexture;
-extern BOOL gResizeShadowTexture;
-extern BOOL gDebugGL;
+extern bool gResizeScreenTexture;
+extern bool gResizeShadowTexture;
+extern bool gDebugGL;
 ////////////////////////////////////////////////////////////////////////////
 // Listeners
 
@@ -265,7 +265,7 @@ static bool handleVSyncChanged(const LLSD& newvalue)
     LLPerfStats::tunables.vsyncEnabled = newvalue.asBoolean();
     gViewerWindow->getWindow()->toggleVSync(newvalue.asBoolean());
 
-    if(newvalue.asBoolean() == true)
+    if (newvalue.asBoolean())
     {
         U32 current_target = gSavedSettings.getU32("TargetFPS");
         gSavedSettings.setU32("TargetFPS", std::min((U32)gViewerWindow->getWindow()->getRefreshRate(), current_target));
@@ -295,12 +295,12 @@ static bool handleAvatarPhysicsLODChanged(const LLSD& newvalue)
 
 static bool handleTerrainLODChanged(const LLSD& newvalue)
 {
-        LLVOSurfacePatch::sLODFactor = (F32)newvalue.asReal();
-        //sqaure lod factor to get exponential range of [0,4] and keep
-        //a value of 1 in the middle of the detail slider for consistency
-        //with other detail sliders (see panel_preferences_graphics1.xml)
-        LLVOSurfacePatch::sLODFactor *= LLVOSurfacePatch::sLODFactor;
-        return true;
+    LLVOSurfacePatch::sLODFactor = (F32)newvalue.asReal();
+    //sqaure lod factor to get exponential range of [0,4] and keep
+    //a value of 1 in the middle of the detail slider for consistency
+    //with other detail sliders (see panel_preferences_graphics1.xml)
+    LLVOSurfacePatch::sLODFactor *= LLVOSurfacePatch::sLODFactor;
+    return true;
 }
 
 static bool handleTreeLODChanged(const LLSD& newvalue)
@@ -375,7 +375,7 @@ static void handleAudioVolumeChanged(const LLSD& newvalue)
 
 static bool handleJoystickChanged(const LLSD& newvalue)
 {
-    LLViewerJoystick::getInstance()->setCameraNeedsUpdate(TRUE);
+    LLViewerJoystick::getInstance()->setCameraNeedsUpdate(true);
     return true;
 }
 
@@ -453,7 +453,7 @@ static bool handleRenderDebugPipelineChanged(const LLSD& newvalue)
 
 static bool handleRenderResolutionDivisorChanged(const LLSD&)
 {
-    gResizeScreenTexture = TRUE;
+    gResizeScreenTexture = true;
     return true;
 }
 
@@ -468,6 +468,7 @@ static bool handleLogFileChanged(const LLSD& newvalue)
     std::string log_filename = newvalue.asString();
     LLFile::remove(log_filename);
     LLError::logToFile(log_filename);
+    LL_INFOS() << "Logging switched to " << log_filename << LL_ENDL;
     return true;
 }
 
@@ -488,7 +489,7 @@ bool handleHighResSnapshotChanged(const LLSD& newvalue)
     // High Res Snapshot active, must uncheck RenderUIInSnapshot
     if (newvalue.asBoolean())
     {
-        gSavedSettings.setBOOL( "RenderUIInSnapshot", FALSE );
+        gSavedSettings.setBOOL( "RenderUIInSnapshot", false);
     }
     return true;
 }
@@ -667,8 +668,13 @@ void handlePerformanceStatsEnabledChanged(const LLSD& newValue)
 }
 void handleUserImpostorByDistEnabledChanged(const LLSD& newValue)
 {
-    const auto newval = gSavedSettings.getBOOL("AutoTuneImpostorByDistEnabled");
-    LLPerfStats::tunables.userImpostorDistanceTuningEnabled = newval;
+    bool auto_tune_newval = false;
+    S32 mode = gSavedSettings.getS32("RenderAvatarComplexityMode");
+    if (mode != LLVOAvatar::AV_RENDER_ONLY_SHOW_FRIENDS)
+    {
+        auto_tune_newval = gSavedSettings.getBOOL("AutoTuneImpostorByDistEnabled");
+    }
+    LLPerfStats::tunables.userImpostorDistanceTuningEnabled = auto_tune_newval;
 }
 void handleUserImpostorDistanceChanged(const LLSD& newValue)
 {
@@ -688,6 +694,28 @@ void handleLocalTerrainChanged(const LLSD& newValue)
         const auto setting = gSavedSettings.getString(std::string("LocalTerrainAsset") + std::to_string(i + 1));
         const LLUUID materialID(setting);
         gLocalTerrainMaterials.setDetailAssetID(i, materialID);
+
+        // *NOTE: The GLTF spec allows for different texture infos to have their texture transforms set independently, but as a simplification, this debug setting only updates all the transforms in-sync (i.e. only one texture transform per terrain material).
+        LLGLTFMaterial::TextureTransform transform;
+        const std::string prefix = std::string("LocalTerrainTransform") + std::to_string(i + 1);
+        transform.mScale.mV[VX] = gSavedSettings.getF32(prefix + "ScaleU");
+        transform.mScale.mV[VY] = gSavedSettings.getF32(prefix + "ScaleV");
+        transform.mRotation = gSavedSettings.getF32(prefix + "Rotation") * DEG_TO_RAD;
+        transform.mOffset.mV[VX] = gSavedSettings.getF32(prefix + "OffsetU");
+        transform.mOffset.mV[VY] = gSavedSettings.getF32(prefix + "OffsetV");
+        LLPointer<LLGLTFMaterial> mat_override = new LLGLTFMaterial();
+        for (U32 info = 0; info < LLGLTFMaterial::GLTF_TEXTURE_INFO_COUNT; ++info)
+        {
+            mat_override->mTextureTransform[info] = transform;
+        }
+        if (*mat_override == LLGLTFMaterial::sDefault)
+        {
+            gLocalTerrainMaterials.setMaterialOverride(i, nullptr);
+        }
+        else
+        {
+            gLocalTerrainMaterials.setMaterialOverride(i, mat_override);
+        }
     }
 }
 ////////////////////////////////////////////////////////////////////////////
@@ -751,6 +779,7 @@ void settings_setup_listeners()
     setting_setup_signal_listener(gSavedSettings, "RenderGlowNoise", handleSetShaderChanged);
     setting_setup_signal_listener(gSavedSettings, "RenderGammaFull", handleSetShaderChanged);
     setting_setup_signal_listener(gSavedSettings, "RenderVolumeLODFactor", handleVolumeLODChanged);
+    setting_setup_signal_listener(gSavedSettings, "RenderAvatarComplexityMode", handleUserImpostorByDistEnabledChanged);
     setting_setup_signal_listener(gSavedSettings, "RenderAvatarLODFactor", handleAvatarLODChanged);
     setting_setup_signal_listener(gSavedSettings, "RenderAvatarPhysicsLODFactor", handleAvatarPhysicsLODChanged);
     setting_setup_signal_listener(gSavedSettings, "RenderTerrainLODFactor", handleTerrainLODChanged);
@@ -875,10 +904,25 @@ void settings_setup_listeners()
     setting_setup_signal_listener(gSavedSettings, "AutoTuneImpostorFarAwayDistance", handleUserImpostorDistanceChanged);
     setting_setup_signal_listener(gSavedSettings, "AutoTuneImpostorByDistEnabled", handleUserImpostorByDistEnabledChanged);
     setting_setup_signal_listener(gSavedSettings, "TuningFPSStrategy", handleFPSTuningStrategyChanged);
-    setting_setup_signal_listener(gSavedSettings, "LocalTerrainAsset1", handleLocalTerrainChanged);
-    setting_setup_signal_listener(gSavedSettings, "LocalTerrainAsset2", handleLocalTerrainChanged);
-    setting_setup_signal_listener(gSavedSettings, "LocalTerrainAsset3", handleLocalTerrainChanged);
-    setting_setup_signal_listener(gSavedSettings, "LocalTerrainAsset4", handleLocalTerrainChanged);
+    {
+        const char* transform_suffixes[] = {
+            "ScaleU",
+            "ScaleV",
+            "Rotation",
+            "OffsetU",
+            "OffsetV"
+        };
+        for (U32 i = 0; i < LLTerrainMaterials::ASSET_COUNT; ++i)
+        {
+            const auto asset_setting_name = std::string("LocalTerrainAsset") + std::to_string(i + 1);
+            setting_setup_signal_listener(gSavedSettings, asset_setting_name, handleLocalTerrainChanged);
+            for (const char* ts : transform_suffixes)
+            {
+                const auto transform_setting_name = std::string("LocalTerrainTransform") + std::to_string(i + 1) + ts;
+                setting_setup_signal_listener(gSavedSettings, transform_setting_name, handleLocalTerrainChanged);
+            }
+        }
+    }
 
     setting_setup_signal_listener(gSavedPerAccountSettings, "AvatarHoverOffsetZ", handleAvatarHoverOffsetChanged);
 }
@@ -890,7 +934,7 @@ DECL_LLCC(U32, (U32)666);
 DECL_LLCC(S32, (S32)-666);
 DECL_LLCC(F32, (F32)-666.666);
 DECL_LLCC(bool, true);
-DECL_LLCC(BOOL, FALSE);
+DECL_LLCC(bool, false);
 static LLCachedControl<std::string> mySetting_string("TestCachedControlstring", "Default String Value");
 DECL_LLCC(LLVector3, LLVector3(1.0f, 2.0f, 3.0f));
 DECL_LLCC(LLVector3d, LLVector3d(6.0f, 5.0f, 4.0f));
@@ -909,7 +953,7 @@ void test_cached_control()
     TEST_LLCC(S32, (S32)-666);
     TEST_LLCC(F32, (F32)-666.666);
     TEST_LLCC(bool, true);
-    TEST_LLCC(BOOL, FALSE);
+    TEST_LLCC(bool, false);
     if((std::string)mySetting_string != "Default String Value") LL_ERRS() << "Fail string" << LL_ENDL;
     TEST_LLCC(LLVector3, LLVector3(1.0f, 2.0f, 3.0f));
     TEST_LLCC(LLVector3d, LLVector3d(6.0f, 5.0f, 4.0f));
diff --git a/indra/newview/llviewercontrol.h b/indra/newview/llviewercontrol.h
index d1ee932cc6..b69b065d10 100644
--- a/indra/newview/llviewercontrol.h
+++ b/indra/newview/llviewercontrol.h
@@ -34,7 +34,7 @@
 // allows a hacked godmode to be toggled on and off.
 #define TOGGLE_HACKED_GODLIKE_VIEWER
 #ifdef TOGGLE_HACKED_GODLIKE_VIEWER
-extern BOOL gHackGodmode;
+extern bool gHackGodmode;
 #endif
 
 bool toggle_show_navigation_panel(const LLSD& newvalue);
diff --git a/indra/newview/llviewerdisplay.cpp b/indra/newview/llviewerdisplay.cpp
index 9ed1fbf366..3183b39e98 100644
--- a/indra/newview/llviewerdisplay.cpp
+++ b/indra/newview/llviewerdisplay.cpp
@@ -87,21 +87,21 @@ extern bool gShiftFrame;
 LLPointer<LLViewerTexture> gDisconnectedImagep = NULL;
 
 // used to toggle renderer back on after teleport
-BOOL         gTeleportDisplay = FALSE;
+bool         gTeleportDisplay = false;
 LLFrameTimer gTeleportDisplayTimer;
 LLFrameTimer gTeleportArrivalTimer;
 const F32       RESTORE_GL_TIME = 5.f;  // Wait this long while reloading textures before we raise the curtain
 
-BOOL gForceRenderLandFence = FALSE;
-BOOL gDisplaySwapBuffers = FALSE;
-BOOL gDepthDirty = FALSE;
-BOOL gResizeScreenTexture = FALSE;
-BOOL gResizeShadowTexture = FALSE;
-BOOL gWindowResized = FALSE;
-BOOL gSnapshot = FALSE;
-BOOL gCubeSnapshot = FALSE;
-BOOL gSnapshotNoPost = FALSE;
-BOOL gShaderProfileFrame = FALSE;
+bool gForceRenderLandFence = false;
+bool gDisplaySwapBuffers = false;
+bool gDepthDirty = false;
+bool gResizeScreenTexture = false;
+bool gResizeShadowTexture = false;
+bool gWindowResized = false;
+bool gSnapshot = false;
+bool gCubeSnapshot = false;
+bool gSnapshotNoPost = false;
+bool gShaderProfileFrame = false;
 
 // This is how long the sim will try to teleport you before giving up.
 const F32 TELEPORT_EXPIRY = 15.0f;
@@ -230,7 +230,7 @@ void display_stats()
         gMemoryAllocated = U64Bytes(LLMemory::getCurrentRSS());
         U32Megabytes memory = gMemoryAllocated;
         LL_INFOS() << "MEMORY: " << memory << LL_ENDL;
-        LLMemory::logMemoryInfo(TRUE) ;
+        LLMemory::logMemoryInfo(true) ;
         gRecentMemoryTime.reset();
     }
     const F32 ASSET_STORAGE_LOG_FREQUENCY = 60.f;
@@ -267,7 +267,7 @@ static void update_tp_display(bool minimized)
     // is minimized *during* a TP. HB
     if (minimized)
     {
-        gViewerWindow->setShowProgress(FALSE);
+        gViewerWindow->setShowProgress(false);
     }
 
     const std::string& message = gAgent.getTeleportMessage();
@@ -279,7 +279,7 @@ static void update_tp_display(bool minimized)
             const std::string& msg = LLAgent::sTeleportProgressMessages["pending"];
             if (!minimized)
             {
-                gViewerWindow->setShowProgress(TRUE);
+                gViewerWindow->setShowProgress(true);
                 gViewerWindow->setProgressPercent(llmin(teleport_percent, 0.0f));
                 gViewerWindow->setProgressString(msg);
             }
@@ -298,7 +298,7 @@ static void update_tp_display(bool minimized)
             gAgent.setTeleportMessage(msg);
             if (!minimized)
             {
-                gViewerWindow->setShowProgress(TRUE);
+                gViewerWindow->setShowProgress(true);
                 gViewerWindow->setProgressPercent(llmin(teleport_percent, 0.0f));
                 gViewerWindow->setProgressString(msg);
                 gViewerWindow->setProgressMessage(gAgent.mMOTD);
@@ -332,11 +332,11 @@ static void update_tp_display(bool minimized)
             gAgent.setTeleportState(LLAgent::TELEPORT_ARRIVING);
             gAgent.setTeleportMessage(LLAgent::sTeleportProgressMessages["arriving"]);
             gAgent.sheduleTeleportIM();
-            gTextureList.mForceResetTextureStats = TRUE;
-            gAgentCamera.resetView(TRUE, TRUE);
+            gTextureList.mForceResetTextureStats = true;
+            gAgentCamera.resetView(true, true);
             if (!minimized)
             {
-                gViewerWindow->setProgressCancelButtonVisible(FALSE, LLTrans::getString("Cancel"));
+                gViewerWindow->setProgressCancelButtonVisible(false, LLTrans::getString("Cancel"));
                 gViewerWindow->setProgressPercent(75.f);
             }
             break;
@@ -354,7 +354,7 @@ static void update_tp_display(bool minimized)
             }
             if (!minimized)
             {
-                gViewerWindow->setProgressCancelButtonVisible(FALSE, LLTrans::getString("Cancel"));
+                gViewerWindow->setProgressCancelButtonVisible(false, LLTrans::getString("Cancel"));
                 gViewerWindow->setProgressPercent(arrival_fraction * 25.f + 75.f);
                 gViewerWindow->setProgressString(message);
             }
@@ -379,13 +379,13 @@ static void update_tp_display(bool minimized)
 
         case LLAgent::TELEPORT_NONE:
             // No teleport in progress
-            gViewerWindow->setShowProgress(FALSE);
-            gTeleportDisplay = FALSE;
+            gViewerWindow->setShowProgress(false);
+            gTeleportDisplay = false;
     }
 }
 
 // Paint the display!
-void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
+void display(bool rebuild, F32 zoom_factor, int subfield, bool for_snapshot)
 {
     LL_PROFILE_ZONE_NAMED_CATEGORY_DISPLAY("Render");
 
@@ -400,22 +400,22 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
         gViewerWindow->getWindow()->swapBuffers();
         LLPipeline::refreshCachedSettings();
         gPipeline.resizeScreenTexture();
-        gResizeScreenTexture = FALSE;
-        gWindowResized = FALSE;
+        gResizeScreenTexture = false;
+        gWindowResized = false;
         return;
     }
 
     if (gResizeShadowTexture)
     { //skip render on frames where window has been resized
         gPipeline.resizeShadowTexture();
-        gResizeShadowTexture = FALSE;
+        gResizeShadowTexture = false;
     }
 
     gSnapshot = for_snapshot;
 
     if (LLPipeline::sRenderDeferred)
     { //hack to make sky show up in deferred snapshots
-        for_snapshot = FALSE;
+        for_snapshot = false;
     }
 
     LLGLSDefault gls_default;
@@ -480,7 +480,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
         static F32 last_update_time = 0.f;
         if ((gFrameTimeSeconds - last_update_time) > 1.f)
         {
-            InvalidateRect((HWND)gViewerWindow->getPlatformWindow(), NULL, FALSE);
+            InvalidateRect((HWND)gViewerWindow->getPlatformWindow(), NULL, false);
             last_update_time = gFrameTimeSeconds;
         }
 #elif LL_DARWIN
@@ -508,7 +508,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
         LLGLSLShader::initProfile();
     }
 
-    //LLGLState::verify(FALSE);
+    //LLGLState::verify(false);
 
     /////////////////////////////////////////////////
     //
@@ -523,7 +523,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
     LLVOAvatar::sRenderName = gSavedSettings.getS32("AvatarNameTagMode");
     LLVOAvatar::sRenderGroupTitles = (gSavedSettings.getBOOL("NameTagShowGroupTitles") && gSavedSettings.getS32("AvatarNameTagMode"));
 
-    gPipeline.mBackfaceCull = TRUE;
+    gPipeline.mBackfaceCull = true;
     gFrameCount++;
     gRecentFrameCount++;
     if (gFocusMgr.getAppHasFocus())
@@ -567,8 +567,8 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
         F32 percent_done = gRestoreGLTimer.getElapsedTimeF32() * 100.f / RESTORE_GL_TIME;
         if( percent_done > 100.f )
         {
-            gViewerWindow->setShowProgress(FALSE);
-            gRestoreGL = FALSE;
+            gViewerWindow->setShowProgress(false);
+            gRestoreGL = false;
         }
         else
         {
@@ -713,7 +713,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
         //Increment drawable frame counter
         LLDrawable::incrementVisible();
 
-        LLSpatialGroup::sNoDelete = TRUE;
+        LLSpatialGroup::sNoDelete = true;
         LLTexUnit::sWhiteTexture = LLViewerFetchedTexture::sWhiteImagep->getTexName();
 
         S32 occlusion = LLPipeline::sUseOcclusion;
@@ -721,7 +721,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
         { //depth buffer is invalid, don't overwrite occlusion state
             LLPipeline::sUseOcclusion = llmin(occlusion, 1);
         }
-        gDepthDirty = FALSE;
+        gDepthDirty = false;
 
         LLGLState::checkStates();
 
@@ -740,7 +740,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
             if (gResizeScreenTexture)
             {
                 gPipeline.resizeScreenTexture();
-                gResizeScreenTexture = FALSE;
+                gResizeScreenTexture = false;
             }
 
             gGL.setColorMask(true, true);
@@ -901,7 +901,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
         //  gGL.popMatrix();
         //}
 
-        LLPipeline::sUnderWaterRender = LLViewerCamera::getInstance()->cameraUnderWater() ? TRUE : FALSE;
+        LLPipeline::sUnderWaterRender = LLViewerCamera::getInstance()->cameraUnderWater();
 
         LLGLState::checkStates();
 
@@ -958,7 +958,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
                 gOcclusionProgram.bind();
                 for (U32 i = 0; i < num_types; i++)
                 {
-                    gPipeline.renderObjects(types[i], LLVertexBuffer::MAP_VERTEX, FALSE);
+                    gPipeline.renderObjects(types[i], LLVertexBuffer::MAP_VERTEX, false);
                 }
 
                 gOcclusionProgram.unbind();
@@ -971,7 +971,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 
         {
             LL_PROFILE_ZONE_NAMED_CATEGORY_DISPLAY("Texture Unbind");
-            for (U32 i = 0; i < gGLManager.mNumTextureImageUnits; i++)
+            for (S32 i = 0; i < gGLManager.mNumTextureImageUnits; i++)
             { //dummy cleanup of any currently bound textures
                 if (gGL.getTexUnit(i)->getCurrType() != LLTexUnit::TT_NONE)
                 {
@@ -991,7 +991,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
             gPipeline.renderDeferredLighting();
         }
 
-        LLPipeline::sUnderWaterRender = FALSE;
+        LLPipeline::sUnderWaterRender = false;
 
         {
             //capture the frame buffer.
@@ -1006,7 +1006,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
         }
 
 
-        LLSpatialGroup::sNoDelete = FALSE;
+        LLSpatialGroup::sNoDelete = false;
         gPipeline.clearReferences();
     }
 
@@ -1022,7 +1022,7 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 
     if (gShaderProfileFrame)
     {
-        gShaderProfileFrame = FALSE;
+        gShaderProfileFrame = false;
         LLGLSLShader::finishProfile();
     }
 }
@@ -1048,7 +1048,7 @@ void display_cube_face()
 
     gPipeline.disableLights();
 
-    gPipeline.mBackfaceCull = TRUE;
+    gPipeline.mBackfaceCull = true;
 
     gViewerWindow->setup3DViewport();
 
@@ -1070,11 +1070,11 @@ void display_cube_face()
         LLEnvironment::instance().update(LLViewerCamera::getInstance());
     }
 
-    LLSpatialGroup::sNoDelete = TRUE;
+    LLSpatialGroup::sNoDelete = true;
 
     S32 occlusion = LLPipeline::sUseOcclusion;
     LLPipeline::sUseOcclusion = 0; // occlusion data is from main camera point of view, don't read or write it during cube snapshots
-    //gDepthDirty = TRUE; //let "real" render pipe know it can't trust the depth buffer for occlusion data
+    //gDepthDirty = true; //let "real" render pipe know it can't trust the depth buffer for occlusion data
 
     static LLCullResult result;
     LLViewerCamera::sCurCameraID = LLViewerCamera::CAMERA_WORLD;
@@ -1108,7 +1108,7 @@ void display_cube_face()
 
     LLAppViewer::instance()->pingMainloopTimeout("Display:RenderStart");
 
-    LLPipeline::sUnderWaterRender = LLViewerCamera::getInstance()->cameraUnderWater() ? TRUE : FALSE;
+    LLPipeline::sUnderWaterRender = LLViewerCamera::getInstance()->cameraUnderWater();
 
     gGL.setColorMask(true, true);
 
@@ -1131,12 +1131,12 @@ void display_cube_face()
 
     gPipeline.renderDeferredLighting();
 
-    LLPipeline::sUnderWaterRender = FALSE;
+    LLPipeline::sUnderWaterRender = false;
 
     // Finalize scene
     //gPipeline.renderFinalize();
 
-    LLSpatialGroup::sNoDelete = FALSE;
+    LLSpatialGroup::sNoDelete = false;
     gPipeline.clearReferences();
 }
 
@@ -1158,11 +1158,11 @@ void render_hud_attachments()
 
     if (LLPipeline::sShowHUDAttachments && !gDisconnected && setup_hud_matrices())
     {
-        LLPipeline::sRenderingHUDs = TRUE;
+        LLPipeline::sRenderingHUDs = true;
         LLCamera hud_cam = *LLViewerCamera::getInstance();
         hud_cam.setOrigin(-1.f,0,0);
         hud_cam.setAxes(LLVector3(1,0,0), LLVector3(0,1,0), LLVector3(0,0,1));
-        LLViewerCamera::updateFrustumPlanes(hud_cam, TRUE);
+        LLViewerCamera::updateFrustumPlanes(hud_cam, true);
 
         bool render_particles = gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_PARTICLES) && gSavedSettings.getBOOL("RenderHUDParticles");
 
@@ -1194,7 +1194,7 @@ void render_hud_attachments()
 
         //cull, sort, and render hud objects
         static LLCullResult result;
-        LLSpatialGroup::sNoDelete = TRUE;
+        LLSpatialGroup::sNoDelete = true;
 
         LLViewerCamera::sCurCameraID = LLViewerCamera::CAMERA_WORLD;
         gPipeline.updateCull(hud_cam, result);
@@ -1229,7 +1229,7 @@ void render_hud_attachments()
 
         gPipeline.renderGeomPostDeferred(hud_cam);
 
-        LLSpatialGroup::sNoDelete = FALSE;
+        LLSpatialGroup::sNoDelete = false;
         //gPipeline.clearReferences();
 
         render_hud_elements();
@@ -1242,7 +1242,7 @@ void render_hud_attachments()
             gPipeline.toggleRenderDebugFeature(LLPipeline::RENDER_DEBUG_FEATURE_UI);
         }
         LLPipeline::sUseOcclusion = use_occlusion;
-        LLPipeline::sRenderingHUDs = FALSE;
+        LLPipeline::sRenderingHUDs = false;
     }
     gGL.matrixMode(LLRender::MM_PROJECTION);
     gGL.popMatrix();
@@ -1303,11 +1303,11 @@ bool get_hud_matrices(const LLRect& screen_region, glh::matrix4f &proj, glh::mat
 
         tmp_model *= mat;
         model = tmp_model;
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -1337,7 +1337,7 @@ bool setup_hud_matrices(const LLRect& screen_region)
     gGL.matrixMode(LLRender::MM_MODELVIEW);
     gGL.loadMatrix(model.m);
     set_current_modelview(model);
-    return TRUE;
+    return true;
 }
 
 void render_ui(F32 zoom_factor, int subfield)
@@ -1429,7 +1429,7 @@ void swap()
     {
         gViewerWindow->getWindow()->swapBuffers();
     }
-    gDisplaySwapBuffers = TRUE;
+    gDisplaySwapBuffers = true;
 }
 
 void renderCoordinateAxes()
@@ -1530,7 +1530,7 @@ void render_ui_3d()
         draw_axes();
     }
 
-    gViewerWindow->renderSelections(FALSE, FALSE, TRUE); // Non HUD call in render_hud_elements
+    gViewerWindow->renderSelections(false, false, true); // Non HUD call in render_hud_elements
 
     if (gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI))
     {
@@ -1586,7 +1586,7 @@ void render_ui_2d()
         F32 zoom = gAgentCamera.mHUDCurZoom;
         gGL.scalef(zoom,zoom,1.f);
         gGL.color4fv(LLColor4::white.mV);
-        gl_rect_2d(-half_width, half_height, half_width, -half_height, FALSE);
+        gl_rect_2d(-half_width, half_height, half_width, -half_height, false);
         gGL.popMatrix();
         gUIProgram.unbind();
         stop_glerror();
@@ -1706,7 +1706,7 @@ void render_disconnected_background()
 
 
         raw->expandToPowerOfTwo();
-        gDisconnectedImagep = LLViewerTextureManager::getLocalTexture(raw.get(), FALSE );
+        gDisconnectedImagep = LLViewerTextureManager::getLocalTexture(raw.get(), false );
         gStartTexture = gDisconnectedImagep;
         gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
     }
diff --git a/indra/newview/llviewerdisplay.h b/indra/newview/llviewerdisplay.h
index dbbf56200a..673f51600d 100644
--- a/indra/newview/llviewerdisplay.h
+++ b/indra/newview/llviewerdisplay.h
@@ -32,15 +32,15 @@ class LLPostProcess;
 void display_startup();
 void display_cleanup();
 
-void display(BOOL rebuild = TRUE, F32 zoom_factor = 1.f, int subfield = 0, BOOL for_snapshot = FALSE);
+void display(bool rebuild = true, F32 zoom_factor = 1.f, int subfield = 0, bool for_snapshot = false);
 
-extern BOOL gDisplaySwapBuffers;
-extern BOOL gDepthDirty;
-extern BOOL gTeleportDisplay;
+extern bool gDisplaySwapBuffers;
+extern bool gDepthDirty;
+extern bool gTeleportDisplay;
 extern LLFrameTimer gTeleportDisplayTimer;
-extern BOOL         gForceRenderLandFence;
-extern BOOL gResizeScreenTexture;
-extern BOOL gResizeShadowTexture;
-extern BOOL gWindowResized;
+extern bool         gForceRenderLandFence;
+extern bool gResizeScreenTexture;
+extern bool gResizeShadowTexture;
+extern bool gWindowResized;
 
 #endif // LL_LLVIEWERDISPLAY_H
diff --git a/indra/newview/llviewerfoldertype.cpp b/indra/newview/llviewerfoldertype.cpp
index 69eb82bb0b..e9c3277721 100644
--- a/indra/newview/llviewerfoldertype.cpp
+++ b/indra/newview/llviewerfoldertype.cpp
@@ -42,7 +42,7 @@ struct ViewerFolderEntry : public LLDictionaryEntry
     ViewerFolderEntry(const std::string &new_category_name, // default name when creating a new category of this type
                       const std::string &icon_name_open,    // name of the folder icon
                       const std::string &icon_name_closed,
-                      BOOL is_quiet,                        // folder doesn't need a UI update when changed
+                      bool is_quiet,                        // folder doesn't need a UI update when changed
                       bool hide_if_empty,                   // folder not shown if empty
                       const std::string &dictionary_name = empty_string // no reverse lookup needed on non-ensembles, so in most cases just leave this blank
         )
@@ -71,7 +71,7 @@ struct ViewerFolderEntry : public LLDictionaryEntry
         */
         mIconNameOpen("Inv_FolderOpen"), mIconNameClosed("Inv_FolderClosed"),
         mNewCategoryName(new_category_name),
-        mIsQuiet(FALSE),
+        mIsQuiet(false),
         mHideIfEmpty(false)
     {
         const std::string delims (",");
@@ -96,7 +96,7 @@ struct ViewerFolderEntry : public LLDictionaryEntry
     const std::string mNewCategoryName;
     typedef std::vector<std::string> name_vec_t;
     name_vec_t mAllowedNames;
-    BOOL mIsQuiet;
+    bool mIsQuiet;
     bool mHideIfEmpty;
 };
 
@@ -112,45 +112,45 @@ LLViewerFolderDictionary::LLViewerFolderDictionary()
 {
     //                                                                    NEW CATEGORY NAME         FOLDER OPEN             FOLDER CLOSED          QUIET?      HIDE IF EMPTY?
     //                                                                   |-------------------------|-----------------------|----------------------|-----------|--------------|
-    addEntry(LLFolderType::FT_TEXTURE,              new ViewerFolderEntry("Textures",               "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_SOUND,                new ViewerFolderEntry("Sounds",                 "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_CALLINGCARD,          new ViewerFolderEntry("Calling Cards",          "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_LANDMARK,             new ViewerFolderEntry("Landmarks",              "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_CLOTHING,             new ViewerFolderEntry("Clothing",               "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_OBJECT,               new ViewerFolderEntry("Objects",                "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_NOTECARD,             new ViewerFolderEntry("Notecards",              "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_ROOT_INVENTORY,       new ViewerFolderEntry("My Inventory",           "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     false));
-    addEntry(LLFolderType::FT_LSL_TEXT,             new ViewerFolderEntry("Scripts",                "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_BODYPART,             new ViewerFolderEntry("Body Parts",             "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_TRASH,                new ViewerFolderEntry("Trash",                  "Inv_TrashOpen",        "Inv_TrashClosed",      TRUE,      false));
-    addEntry(LLFolderType::FT_SNAPSHOT_CATEGORY,    new ViewerFolderEntry("Photo Album",            "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_LOST_AND_FOUND,       new ViewerFolderEntry("Lost And Found",         "Inv_LostOpen",         "Inv_LostClosed",       TRUE,      true));
-    addEntry(LLFolderType::FT_ANIMATION,            new ViewerFolderEntry("Animations",             "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_GESTURE,              new ViewerFolderEntry("Gestures",               "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_FAVORITE,             new ViewerFolderEntry("Favorites",              "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-
-    addEntry(LLFolderType::FT_CURRENT_OUTFIT,       new ViewerFolderEntry("Current Outfit",         "Inv_SysOpen",          "Inv_SysClosed",        TRUE,      false));
-    addEntry(LLFolderType::FT_OUTFIT,               new ViewerFolderEntry("New Outfit",             "Inv_LookFolderOpen",   "Inv_LookFolderClosed", TRUE,      false));
-    addEntry(LLFolderType::FT_MY_OUTFITS,           new ViewerFolderEntry("My Outfits",             "Inv_SysOpen",          "Inv_SysClosed",        TRUE,      true));
-    addEntry(LLFolderType::FT_MESH,                 new ViewerFolderEntry("Meshes",                 "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_SETTINGS,             new ViewerFolderEntry("Settings",               "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
-    addEntry(LLFolderType::FT_MATERIAL,             new ViewerFolderEntry("Materials",              "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
+    addEntry(LLFolderType::FT_TEXTURE,              new ViewerFolderEntry("Textures",               "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_SOUND,                new ViewerFolderEntry("Sounds",                 "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_CALLINGCARD,          new ViewerFolderEntry("Calling Cards",          "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_LANDMARK,             new ViewerFolderEntry("Landmarks",              "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_CLOTHING,             new ViewerFolderEntry("Clothing",               "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_OBJECT,               new ViewerFolderEntry("Objects",                "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_NOTECARD,             new ViewerFolderEntry("Notecards",              "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_ROOT_INVENTORY,       new ViewerFolderEntry("My Inventory",           "Inv_SysOpen",          "Inv_SysClosed",        false,     false));
+    addEntry(LLFolderType::FT_LSL_TEXT,             new ViewerFolderEntry("Scripts",                "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_BODYPART,             new ViewerFolderEntry("Body Parts",             "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_TRASH,                new ViewerFolderEntry("Trash",                  "Inv_TrashOpen",        "Inv_TrashClosed",      true,      false));
+    addEntry(LLFolderType::FT_SNAPSHOT_CATEGORY,    new ViewerFolderEntry("Photo Album",            "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_LOST_AND_FOUND,       new ViewerFolderEntry("Lost And Found",         "Inv_LostOpen",         "Inv_LostClosed",       true,      true));
+    addEntry(LLFolderType::FT_ANIMATION,            new ViewerFolderEntry("Animations",             "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_GESTURE,              new ViewerFolderEntry("Gestures",               "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_FAVORITE,             new ViewerFolderEntry("Favorites",              "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+
+    addEntry(LLFolderType::FT_CURRENT_OUTFIT,       new ViewerFolderEntry("Current Outfit",         "Inv_SysOpen",          "Inv_SysClosed",        true,      false));
+    addEntry(LLFolderType::FT_OUTFIT,               new ViewerFolderEntry("New Outfit",             "Inv_LookFolderOpen",   "Inv_LookFolderClosed", true,      false));
+    addEntry(LLFolderType::FT_MY_OUTFITS,           new ViewerFolderEntry("My Outfits",             "Inv_SysOpen",          "Inv_SysClosed",        true,      true));
+    addEntry(LLFolderType::FT_MESH,                 new ViewerFolderEntry("Meshes",                 "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_SETTINGS,             new ViewerFolderEntry("Settings",               "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
+    addEntry(LLFolderType::FT_MATERIAL,             new ViewerFolderEntry("Materials",              "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
 
     bool boxes_invisible = !gSavedSettings.getBOOL("InventoryOutboxMakeVisible");
-    addEntry(LLFolderType::FT_INBOX,                new ViewerFolderEntry("Received Items",         "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     boxes_invisible));
-    addEntry(LLFolderType::FT_OUTBOX,               new ViewerFolderEntry("Merchant Outbox",        "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
+    addEntry(LLFolderType::FT_INBOX,                new ViewerFolderEntry("Received Items",         "Inv_SysOpen",          "Inv_SysClosed",        false,     boxes_invisible));
+    addEntry(LLFolderType::FT_OUTBOX,               new ViewerFolderEntry("Merchant Outbox",        "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
 
-    addEntry(LLFolderType::FT_BASIC_ROOT,           new ViewerFolderEntry("Basic Root",             "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     true));
+    addEntry(LLFolderType::FT_BASIC_ROOT,           new ViewerFolderEntry("Basic Root",             "Inv_SysOpen",          "Inv_SysClosed",        false,     true));
 
-    addEntry(LLFolderType::FT_MARKETPLACE_LISTINGS, new ViewerFolderEntry("Marketplace Listings",   "Inv_SysOpen",          "Inv_SysClosed",        FALSE,     boxes_invisible));
-    addEntry(LLFolderType::FT_MARKETPLACE_STOCK,    new ViewerFolderEntry("New Stock",              "Inv_StockFolderOpen",  "Inv_StockFolderClosed",        FALSE,     false, "default"));
-    addEntry(LLFolderType::FT_MARKETPLACE_VERSION,  new ViewerFolderEntry("New Version",            "Inv_VersionFolderOpen","Inv_VersionFolderClosed",      FALSE,     false, "default"));
+    addEntry(LLFolderType::FT_MARKETPLACE_LISTINGS, new ViewerFolderEntry("Marketplace Listings",   "Inv_SysOpen",          "Inv_SysClosed",        false,     boxes_invisible));
+    addEntry(LLFolderType::FT_MARKETPLACE_STOCK,    new ViewerFolderEntry("New Stock",              "Inv_StockFolderOpen",  "Inv_StockFolderClosed",        false,     false, "default"));
+    addEntry(LLFolderType::FT_MARKETPLACE_VERSION,  new ViewerFolderEntry("New Version",            "Inv_VersionFolderOpen","Inv_VersionFolderClosed",      false,     false, "default"));
 
-    addEntry(LLFolderType::FT_NONE,                 new ViewerFolderEntry("New Folder",             "Inv_FolderOpen",       "Inv_FolderClosed",     FALSE,     false, "default"));
+    addEntry(LLFolderType::FT_NONE,                 new ViewerFolderEntry("New Folder",             "Inv_FolderOpen",       "Inv_FolderClosed",     false,     false, "default"));
 
     for (U32 type = (U32)LLFolderType::FT_ENSEMBLE_START; type <= (U32)LLFolderType::FT_ENSEMBLE_END; ++type)
     {
-        addEntry((LLFolderType::EType)type,         new ViewerFolderEntry("New Folder",             "Inv_FolderOpen",       "Inv_FolderClosed",     FALSE,     false));
+        addEntry((LLFolderType::EType)type,         new ViewerFolderEntry("New Folder",             "Inv_FolderOpen",       "Inv_FolderClosed",     false,     false));
     }
 }
 
@@ -236,7 +236,7 @@ LLFolderType::EType LLViewerFolderType::lookupTypeFromXUIName(const std::string
     return LLViewerFolderDictionary::getInstance()->lookup(name);
 }
 
-const std::string &LLViewerFolderType::lookupIconName(LLFolderType::EType folder_type, BOOL is_open)
+const std::string &LLViewerFolderType::lookupIconName(LLFolderType::EType folder_type, bool is_open)
 {
     const ViewerFolderEntry *entry = LLViewerFolderDictionary::getInstance()->lookup(folder_type);
     if (entry)
@@ -258,14 +258,14 @@ const std::string &LLViewerFolderType::lookupIconName(LLFolderType::EType folder
     return badLookup();
 }
 
-BOOL LLViewerFolderType::lookupIsQuietType(LLFolderType::EType folder_type)
+bool LLViewerFolderType::lookupIsQuietType(LLFolderType::EType folder_type)
 {
     const ViewerFolderEntry *entry = LLViewerFolderDictionary::getInstance()->lookup(folder_type);
     if (entry)
     {
         return entry->mIsQuiet;
     }
-    return FALSE;
+    return false;
 }
 
 bool LLViewerFolderType::lookupIsHiddenIfEmpty(LLFolderType::EType folder_type)
diff --git a/indra/newview/llviewerfoldertype.h b/indra/newview/llviewerfoldertype.h
index 9d65002c86..f25c1113a3 100644
--- a/indra/newview/llviewerfoldertype.h
+++ b/indra/newview/llviewerfoldertype.h
@@ -38,8 +38,8 @@ public:
     static const std::string&   lookupXUIName(EType folder_type); // name used by the UI
     static LLFolderType::EType  lookupTypeFromXUIName(const std::string& name);
 
-    static const std::string&   lookupIconName(EType folder_type, BOOL is_open = FALSE); // folder icon name
-    static BOOL                 lookupIsQuietType(EType folder_type); // folder doesn't require UI update when changes have occured
+    static const std::string&   lookupIconName(EType folder_type, bool is_open = false); // folder icon name
+    static bool                 lookupIsQuietType(EType folder_type); // folder doesn't require UI update when changes have occured
     static bool                 lookupIsHiddenIfEmpty(EType folder_type); // folder is not displayed if empty
     static const std::string&   lookupNewCategoryName(EType folder_type); // default name when creating new category
     static LLFolderType::EType  lookupTypeFromNewCategoryName(const std::string& name); // default name when creating new category
diff --git a/indra/newview/llviewergesture.cpp b/indra/newview/llviewergesture.cpp
index 2f7d4110fb..eacf68dda5 100644
--- a/indra/newview/llviewergesture.cpp
+++ b/indra/newview/llviewergesture.cpp
@@ -70,37 +70,37 @@ LLViewerGesture::LLViewerGesture(const LLViewerGesture &rhs)
 {
 }
 
-BOOL LLViewerGesture::trigger(KEY key, MASK mask)
+bool LLViewerGesture::trigger(KEY key, MASK mask)
 {
     if (mKey == key && mMask == mask)
     {
-        doTrigger( TRUE );
-        return TRUE;
+        doTrigger( true );
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
 
-BOOL LLViewerGesture::trigger(const std::string &trigger_string)
+bool LLViewerGesture::trigger(const std::string &trigger_string)
 {
     // Assumes trigger_string is lowercase
     if (mTriggerLower == trigger_string)
     {
-        doTrigger( FALSE );
-        return TRUE;
+        doTrigger( false );
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
 
 // private
-void LLViewerGesture::doTrigger( BOOL send_chat )
+void LLViewerGesture::doTrigger( bool send_chat )
 {
     if (mSoundItemID != LLUUID::null)
     {
@@ -132,7 +132,7 @@ void LLViewerGesture::doTrigger( BOOL send_chat )
         // Don't play nodding animation, since that might not blend
         // with the gesture animation.
         (LLFloaterReg::getTypedInstance<LLFloaterIMNearbyChat>("nearby_chat"))->
-                sendChatFromViewer(mOutputString, CHAT_TYPE_NORMAL, FALSE);
+                sendChatFromViewer(mOutputString, CHAT_TYPE_NORMAL, false);
     }
 }
 
@@ -140,7 +140,7 @@ void LLViewerGesture::doTrigger( BOOL send_chat )
 LLViewerGestureList::LLViewerGestureList()
 :   LLGestureList()
 {
-    mIsLoaded = FALSE;
+    mIsLoaded = false;
 }
 
 
@@ -151,12 +151,12 @@ LLGesture *LLViewerGestureList::create_gesture(U8 **buffer, S32 max_size)
 }
 
 
-// See if the prefix matches any gesture.  If so, return TRUE
+// See if the prefix matches any gesture.  If so, return true
 // and place the full text of the gesture trigger into
 // output_str
-BOOL LLViewerGestureList::matchPrefix(const std::string& in_str, std::string* out_str)
+bool LLViewerGestureList::matchPrefix(const std::string& in_str, std::string* out_str)
 {
-    S32 in_len = in_str.length();
+    S32 in_len = static_cast<S32>(in_str.length());
 
     std::string in_str_lc = in_str;
     LLStringUtil::toLower(in_str_lc);
@@ -177,10 +177,10 @@ BOOL LLViewerGestureList::matchPrefix(const std::string& in_str, std::string* ou
         if (in_str_lc == trigger_trunc)
         {
             *out_str = trigger;
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -197,7 +197,7 @@ void LLViewerGestureList::xferCallback(void *data, S32 size, void** /*user_data*
             LL_ERRS() << "Read off of end of array, error in serialization" << LL_ENDL;
         }
 
-        gGestureList.mIsLoaded = TRUE;
+        gGestureList.mIsLoaded = true;
     }
     else
     {
diff --git a/indra/newview/llviewergesture.h b/indra/newview/llviewergesture.h
index 222b0a1327..120a9cdda5 100644
--- a/indra/newview/llviewergesture.h
+++ b/indra/newview/llviewergesture.h
@@ -46,12 +46,12 @@ public:
     LLViewerGesture(const LLViewerGesture &gesture);
 
     // Triggers if a key/mask matches it
-    virtual BOOL trigger(KEY key, MASK mask);
+    virtual bool trigger(KEY key, MASK mask);
 
     // Triggers if case-insensitive substring matches (assumes string is lowercase)
-    virtual BOOL trigger(const std::string &string);
+    virtual bool trigger(const std::string &string);
 
-    void doTrigger( BOOL send_chat );
+    void doTrigger( bool send_chat );
 
 protected:
     static const F32    SOUND_VOLUME;
@@ -63,14 +63,14 @@ public:
     LLViewerGestureList();
 
     //void requestFromServer();
-    BOOL getIsLoaded() { return mIsLoaded; }
+    bool getIsLoaded() { return mIsLoaded; }
 
-    //void requestResetFromServer( BOOL is_male );
+    //void requestResetFromServer( bool is_male );
 
-    // See if the prefix matches any gesture.  If so, return TRUE
+    // See if the prefix matches any gesture.  If so, return true
     // and place the full text of the gesture trigger into
     // output_str
-    BOOL matchPrefix(const std::string& in_str, std::string* out_str);
+    bool matchPrefix(const std::string& in_str, std::string* out_str);
 
     static void xferCallback(void *data, S32 size, void** /*user_data*/, S32 status);
 
@@ -78,7 +78,7 @@ protected:
     LLGesture *create_gesture(U8 **buffer, S32 max_size);
 
 protected:
-    BOOL mIsLoaded;
+    bool mIsLoaded;
 };
 
 extern LLViewerGestureList gGestureList;
diff --git a/indra/newview/llviewerinput.cpp b/indra/newview/llviewerinput.cpp
index c63f7338ed..ffcbd1b4d8 100644
--- a/indra/newview/llviewerinput.cpp
+++ b/indra/newview/llviewerinput.cpp
@@ -87,10 +87,10 @@ LLViewerInput gViewerInput;
 
 bool agent_jump( EKeystate s )
 {
-    static BOOL first_fly_attempt(TRUE);
+    static bool first_fly_attempt(true);
     if (KEYSTATE_UP == s)
     {
-        first_fly_attempt = TRUE;
+        first_fly_attempt = true;
         return true;
     }
     F32 time = gKeyboard->getCurKeyElapsedTime();
@@ -105,8 +105,8 @@ bool agent_jump( EKeystate s )
     }
     else
     {
-        gAgent.setFlying(TRUE, first_fly_attempt);
-        first_fly_attempt = FALSE;
+        gAgent.setFlying(true, first_fly_attempt);
+        first_fly_attempt = false;
         gAgent.moveUp(1);
     }
     return true;
@@ -570,7 +570,7 @@ bool camera_move_backward_fast( EKeystate s )
 bool edit_avatar_spin_ccw( EKeystate s )
 {
     if( KEYSTATE_UP == s  ) return true;
-    gMorphView->setCameraDrivenByKeys( TRUE );
+    gMorphView->setCameraDrivenByKeys( true );
     gAgentCamera.setOrbitLeftKey( get_orbit_rate() );
     //gMorphView->orbitLeft( get_orbit_rate() );
     return true;
@@ -580,7 +580,7 @@ bool edit_avatar_spin_ccw( EKeystate s )
 bool edit_avatar_spin_cw( EKeystate s )
 {
     if( KEYSTATE_UP == s  ) return true;
-    gMorphView->setCameraDrivenByKeys( TRUE );
+    gMorphView->setCameraDrivenByKeys( true );
     gAgentCamera.setOrbitRightKey( get_orbit_rate() );
     //gMorphView->orbitRight( get_orbit_rate() );
     return true;
@@ -589,7 +589,7 @@ bool edit_avatar_spin_cw( EKeystate s )
 bool edit_avatar_spin_over( EKeystate s )
 {
     if( KEYSTATE_UP == s  ) return true;
-    gMorphView->setCameraDrivenByKeys( TRUE );
+    gMorphView->setCameraDrivenByKeys( true );
     gAgentCamera.setOrbitUpKey( get_orbit_rate() );
     //gMorphView->orbitUp( get_orbit_rate() );
     return true;
@@ -599,7 +599,7 @@ bool edit_avatar_spin_over( EKeystate s )
 bool edit_avatar_spin_under( EKeystate s )
 {
     if( KEYSTATE_UP == s  ) return true;
-    gMorphView->setCameraDrivenByKeys( TRUE );
+    gMorphView->setCameraDrivenByKeys( true );
     gAgentCamera.setOrbitDownKey( get_orbit_rate() );
     //gMorphView->orbitDown( get_orbit_rate() );
     return true;
@@ -608,7 +608,7 @@ bool edit_avatar_spin_under( EKeystate s )
 bool edit_avatar_move_forward( EKeystate s )
 {
     if( KEYSTATE_UP == s  ) return true;
-    gMorphView->setCameraDrivenByKeys( TRUE );
+    gMorphView->setCameraDrivenByKeys( true );
     gAgentCamera.setOrbitInKey( get_orbit_rate() );
     //gMorphView->orbitIn();
     return true;
@@ -618,7 +618,7 @@ bool edit_avatar_move_forward( EKeystate s )
 bool edit_avatar_move_backward( EKeystate s )
 {
     if( KEYSTATE_UP == s  ) return true;
-    gMorphView->setCameraDrivenByKeys( TRUE );
+    gMorphView->setCameraDrivenByKeys( true );
     gAgentCamera.setOrbitOutKey( get_orbit_rate() );
     //gMorphView->orbitOut();
     return true;
@@ -987,7 +987,7 @@ LLViewerInput::LLViewerInput()
 
     for (S32 i = 0; i < KEY_COUNT; i++)
     {
-        mKeyHandledByUI[i] = FALSE;
+        mKeyHandledByUI[i] = false;
     }
     for (S32 i = 0; i < CLICK_COUNT; i++)
     {
@@ -1047,41 +1047,41 @@ bool LLViewerInput::modeFromString(const std::string& string, S32 *mode)
 }
 
 // static
-BOOL LLViewerInput::mouseFromString(const std::string& string, EMouseClickType *mode)
+bool LLViewerInput::mouseFromString(const std::string& string, EMouseClickType *mode)
 {
     if (string == "LMB")
     {
         *mode = CLICK_LEFT;
-        return TRUE;
+        return true;
     }
     else if (string == "Double LMB")
     {
         *mode = CLICK_DOUBLELEFT;
-        return TRUE;
+        return true;
     }
     else if (string == "MMB")
     {
         *mode = CLICK_MIDDLE;
-        return TRUE;
+        return true;
     }
     else if (string == "MB4")
     {
         *mode = CLICK_BUTTON4;
-        return TRUE;
+        return true;
     }
     else if (string == "MB5")
     {
         *mode = CLICK_BUTTON5;
-        return TRUE;
+        return true;
     }
     else
     {
         *mode = CLICK_NONE;
-        return FALSE;
+        return false;
     }
 }
 
-BOOL LLViewerInput::handleKey(KEY translated_key, MASK translated_mask, BOOL repeated)
+bool LLViewerInput::handleKey(KEY translated_key, MASK translated_mask, bool repeated)
 {
     // check for re-map
     EKeyboardMode mode = gViewerInput.getMode();
@@ -1094,17 +1094,17 @@ BOOL LLViewerInput::handleKey(KEY translated_key, MASK translated_mask, BOOL rep
     }
 
     // No repeats of F-keys
-    BOOL repeatable_key = (translated_key < KEY_F1 || translated_key > KEY_F12);
+    bool repeatable_key = (translated_key < KEY_F1 || translated_key > KEY_F12);
     if (!repeatable_key && repeated)
     {
-        return FALSE;
+        return false;
     }
 
     LL_DEBUGS("UserInput") << "keydown -" << translated_key << "-" << LL_ENDL;
     // skip skipped keys
     if(mKeysSkippedByUI.find(translated_key) != mKeysSkippedByUI.end())
     {
-        mKeyHandledByUI[translated_key] = FALSE;
+        mKeyHandledByUI[translated_key] = false;
         LL_INFOS("KeyboardHandling") << "Key wasn't handled by UI!" << LL_ENDL;
     }
     else
@@ -1119,7 +1119,7 @@ BOOL LLViewerInput::handleKey(KEY translated_key, MASK translated_mask, BOOL rep
     return mKeyHandledByUI[translated_key];
 }
 
-BOOL LLViewerInput::handleKeyUp(KEY translated_key, MASK translated_mask)
+bool LLViewerInput::handleKeyUp(KEY translated_key, MASK translated_mask)
 {
     return gViewerWindow->handleKeyUp(translated_key, translated_mask);
 }
@@ -1133,7 +1133,7 @@ bool LLViewerInput::handleGlobalBindsKeyDown(KEY key, MASK mask)
         return false;
     }
     S32 mode = getMode();
-    return scanKey(mGlobalKeyBindings[mode], mGlobalKeyBindings[mode].size(), key, mask, TRUE, FALSE, FALSE, FALSE);
+    return scanKey(mGlobalKeyBindings[mode], static_cast<S32>(mGlobalKeyBindings[mode].size()), key, mask, true, false, false, false);
 }
 
 bool LLViewerInput::handleGlobalBindsKeyUp(KEY key, MASK mask)
@@ -1146,7 +1146,7 @@ bool LLViewerInput::handleGlobalBindsKeyUp(KEY key, MASK mask)
     }
 
     S32 mode = getMode();
-    return scanKey(mGlobalKeyBindings[mode], mGlobalKeyBindings[mode].size(), key, mask, FALSE, TRUE, FALSE, FALSE);
+    return scanKey(mGlobalKeyBindings[mode], static_cast<S32>(mGlobalKeyBindings[mode].size()), key, mask, false, true, false, false);
 }
 
 bool LLViewerInput::handleGlobalBindsMouse(EMouseClickType clicktype, MASK mask, bool down)
@@ -1162,18 +1162,18 @@ bool LLViewerInput::handleGlobalBindsMouse(EMouseClickType clicktype, MASK mask,
     S32 mode = getMode();
     if (down)
     {
-        res = scanMouse(mGlobalMouseBindings[mode], mGlobalMouseBindings[mode].size(), clicktype, mask, MOUSE_STATE_DOWN, true);
+        res = scanMouse(mGlobalMouseBindings[mode], static_cast<S32>(mGlobalMouseBindings[mode].size()), clicktype, mask, MOUSE_STATE_DOWN, true);
     }
     else
     {
-        res = scanMouse(mGlobalMouseBindings[mode], mGlobalMouseBindings[mode].size(), clicktype, mask, MOUSE_STATE_UP, true);
+        res = scanMouse(mGlobalMouseBindings[mode], static_cast<S32>(mGlobalMouseBindings[mode].size()), clicktype, mask, MOUSE_STATE_UP, true);
     }
     return res;
 }
 
-BOOL LLViewerInput::bindKey(const S32 mode, const KEY key, const MASK mask, const std::string& function_name)
+bool LLViewerInput::bindKey(const S32 mode, const KEY key, const MASK mask, const std::string& function_name)
 {
-    S32 index;
+    size_t index;
     typedef boost::function<bool(EKeystate)> function_t;
     function_t function = NULL;
     std::string name;
@@ -1192,7 +1192,7 @@ BOOL LLViewerInput::bindKey(const S32 mode, const KEY key, const MASK mask, cons
             {
                 U32 keyidx = ((mask<<16)|key);
                 (mRemapKeys[mode])[keyidx] = ((0<<16)|(KEY_F1+(idx-1)));
-                return TRUE;
+                return true;
             }
         }
     }
@@ -1208,37 +1208,37 @@ BOOL LLViewerInput::bindKey(const S32 mode, const KEY key, const MASK mask, cons
     if (!function)
     {
         LL_WARNS_ONCE() << "Can't bind key to function " << function_name << ", no function with this name found" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if (mode >= MODE_COUNT)
     {
         LL_ERRS() << "LLKeyboard::bindKey() - unknown mode passed" << mode << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // check for duplicate first and overwrite
     if (result->mIsGlobal)
     {
-        S32 size = mGlobalKeyBindings[mode].size();
+        auto size = mGlobalKeyBindings[mode].size();
         for (index = 0; index < size; index++)
         {
             if (key == mGlobalKeyBindings[mode][index].mKey && mask == mGlobalKeyBindings[mode][index].mMask)
             {
                 mGlobalKeyBindings[mode][index].mFunction = function;
-                return TRUE;
+                return true;
             }
         }
     }
     else
     {
-        S32 size = mKeyBindings[mode].size();
+        auto size = mKeyBindings[mode].size();
         for (index = 0; index < size; index++)
         {
             if (key == mKeyBindings[mode][index].mKey && mask == mKeyBindings[mode][index].mMask)
             {
                 mKeyBindings[mode][index].mFunction = function;
-                return TRUE;
+                return true;
             }
         }
     }
@@ -1258,12 +1258,12 @@ BOOL LLViewerInput::bindKey(const S32 mode, const KEY key, const MASK mask, cons
         mKeyBindings[mode].push_back(bind);
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLViewerInput::bindMouse(const S32 mode, const EMouseClickType mouse, const MASK mask, const std::string& function_name)
+bool LLViewerInput::bindMouse(const S32 mode, const EMouseClickType mouse, const MASK mask, const std::string& function_name)
 {
-    S32 index;
+    size_t index;
     typedef boost::function<bool(EKeystate)> function_t;
     function_t function = NULL;
 
@@ -1278,7 +1278,7 @@ BOOL LLViewerInput::bindMouse(const S32 mode, const EMouseClickType mouse, const
         // priority even over UI and is handled in LLToolCompGun::handleMouseDown
         // so just mark it as having default handler
         mLMouseDefaultHandling[mode] = true;
-        return TRUE;
+        return true;
     }
 
     LLKeybindFunctionData* result = LLKeyboardActionRegistry::getValue(function_name);
@@ -1290,19 +1290,19 @@ BOOL LLViewerInput::bindMouse(const S32 mode, const EMouseClickType mouse, const
     if (!function)
     {
         LL_WARNS_ONCE() << "Can't bind mouse key to function " << function_name << ", no function with this name found" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if (mode >= MODE_COUNT)
     {
         LL_ERRS() << "LLKeyboard::bindKey() - unknown mode passed" << mode << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     // check for duplicate first and overwrite
     if (result->mIsGlobal)
     {
-        S32 size = mGlobalMouseBindings[mode].size();
+        auto size = mGlobalMouseBindings[mode].size();
         for (index = 0; index < size; index++)
         {
             if (mouse == mGlobalMouseBindings[mode][index].mMouse && mask == mGlobalMouseBindings[mode][index].mMask)
@@ -1314,7 +1314,7 @@ BOOL LLViewerInput::bindMouse(const S32 mode, const EMouseClickType mouse, const
     }
     else
     {
-        S32 size = mMouseBindings[mode].size();
+        auto size = mMouseBindings[mode].size();
         for (index = 0; index < size; index++)
         {
             if (mouse == mMouseBindings[mode][index].mMouse && mask == mMouseBindings[mode][index].mMask)
@@ -1340,7 +1340,7 @@ BOOL LLViewerInput::bindMouse(const S32 mode, const EMouseClickType mouse, const
         mMouseBindings[mode].push_back(bind);
     }
 
-    return TRUE;
+    return true;
 }
 
 LLViewerInput::KeyBinding::KeyBinding()
@@ -1560,9 +1560,9 @@ bool LLViewerInput::scanKey(const std::vector<LLKeyboardBinding> &binding,
                                S32 binding_count,
                                KEY key,
                                MASK mask,
-                               BOOL key_down,
-                               BOOL key_up,
-                               BOOL key_level,
+                               bool key_down,
+                               bool key_up,
+                               bool key_level,
                                bool repeat) const
 {
     for (S32 i = 0; i < binding_count; i++)
@@ -1598,7 +1598,7 @@ bool LLViewerInput::scanKey(const std::vector<LLKeyboardBinding> &binding,
 }
 
 // Called from scanKeyboard.
-bool LLViewerInput::scanKey(KEY key, BOOL key_down, BOOL key_up, BOOL key_level) const
+bool LLViewerInput::scanKey(KEY key, bool key_down, bool key_up, bool key_level) const
 {
     if (LLApp::isExiting())
     {
@@ -1607,7 +1607,7 @@ bool LLViewerInput::scanKey(KEY key, BOOL key_down, BOOL key_up, BOOL key_level)
 
     S32 mode = getMode();
     // Consider keyboard scanning as NOT mouse event. JC
-    MASK mask = gKeyboard->currentMask(FALSE);
+    MASK mask = gKeyboard->currentMask(false);
 
     if (mKeyHandledByUI[key])
     {
@@ -1615,17 +1615,17 @@ bool LLViewerInput::scanKey(KEY key, BOOL key_down, BOOL key_up, BOOL key_level)
     }
 
     // don't process key down on repeated keys
-    BOOL repeat = gKeyboard->getKeyRepeated(key);
+    bool repeat = gKeyboard->getKeyRepeated(key);
 
-    bool res = scanKey(mKeyBindings[mode], mKeyBindings[mode].size(), key, mask, key_down, key_up, key_level, repeat);
+    bool res = scanKey(mKeyBindings[mode], static_cast<S32>(mKeyBindings[mode].size()), key, mask, key_down, key_up, key_level, repeat);
 
     return res;
 }
 
-BOOL LLViewerInput::handleMouse(LLWindow *window_impl, LLCoordGL pos, MASK mask, EMouseClickType clicktype, BOOL down)
+bool LLViewerInput::handleMouse(LLWindow *window_impl, LLCoordGL pos, MASK mask, EMouseClickType clicktype, bool down)
 {
     bool is_toolmgr_action = false;
-    BOOL handled = gViewerWindow->handleAnyMouseClick(window_impl, pos, mask, clicktype, down, is_toolmgr_action);
+    bool handled = gViewerWindow->handleAnyMouseClick(window_impl, pos, mask, clicktype, down, is_toolmgr_action);
 
     if (clicktype != CLICK_NONE)
     {
@@ -1752,8 +1752,8 @@ bool LLViewerInput::scanMouse(EMouseClickType click, EMouseState state) const
 {
     bool res = false;
     S32 mode = getMode();
-    MASK mask = gKeyboard->currentMask(TRUE);
-    res = scanMouse(mMouseBindings[mode], mMouseBindings[mode].size(), click, mask, state, false);
+    MASK mask = gKeyboard->currentMask(true);
+    res = scanMouse(mMouseBindings[mode], static_cast<S32>(mMouseBindings[mode].size()), click, mask, state, false);
 
     // No user defined actions found or those actions can't handle the key/button,
     // so handle CONTROL_LBUTTON if nessesary.
@@ -1814,14 +1814,14 @@ void LLViewerInput::scanMouse()
 
 bool LLViewerInput::isMouseBindUsed(const EMouseClickType mouse, const MASK mask, const S32 mode) const
 {
-    S32 size = mMouseBindings[mode].size();
-    for (S32 index = 0; index < size; index++)
+    auto size = mMouseBindings[mode].size();
+    for (size_t index = 0; index < size; index++)
     {
         if (mouse == mMouseBindings[mode][index].mMouse && mask == mMouseBindings[mode][index].mMask)
             return true;
     }
     size = mGlobalMouseBindings[mode].size();
-    for (S32 index = 0; index < size; index++)
+    for (size_t index = 0; index < size; index++)
     {
         if (mouse == mGlobalMouseBindings[mode][index].mMouse && mask == mGlobalMouseBindings[mode][index].mMask)
             return true;
diff --git a/indra/newview/llviewerinput.h b/indra/newview/llviewerinput.h
index 29bc5d6886..50b2c4ab9f 100644
--- a/indra/newview/llviewerinput.h
+++ b/indra/newview/llviewerinput.h
@@ -108,8 +108,8 @@ public:
     LLViewerInput();
     virtual ~LLViewerInput();
 
-    BOOL            handleKey(KEY key, MASK mask, BOOL repeated);
-    BOOL            handleKeyUp(KEY key, MASK mask);
+    bool            handleKey(KEY key, MASK mask, bool repeated);
+    bool            handleKeyUp(KEY key, MASK mask);
 
     // Handle 'global' keybindings that do not consume event,
     // yet need to be processed early
@@ -122,15 +122,15 @@ public:
     EKeyboardMode   getMode() const;
 
     static bool     modeFromString(const std::string& string, S32 *mode);           // False on failure
-    static BOOL     mouseFromString(const std::string& string, EMouseClickType *mode);// False on failure
+    static bool     mouseFromString(const std::string& string, EMouseClickType *mode);// False on failure
 
     bool            scanKey(KEY key,
-                            BOOL key_down,
-                            BOOL key_up,
-                            BOOL key_level) const;
+                            bool key_down,
+                            bool key_up,
+                            bool key_level) const;
 
     // handleMouse() records state, scanMouse() goes through states, scanMouse(click) processes individual saved states after UI is done with them
-    BOOL            handleMouse(LLWindow *window_impl, LLCoordGL pos, MASK mask, EMouseClickType clicktype, BOOL down);
+    bool            handleMouse(LLWindow *window_impl, LLCoordGL pos, MASK mask, EMouseClickType clicktype, bool down);
     void            scanMouse();
 
     bool            isMouseBindUsed(const EMouseClickType mouse, const MASK mask, const S32 mode) const;
@@ -144,9 +144,9 @@ private:
                             S32 binding_count,
                             KEY key,
                             MASK mask,
-                            BOOL key_down,
-                            BOOL key_up,
-                            BOOL key_level,
+                            bool key_down,
+                            bool key_up,
+                            bool key_level,
                             bool repeat) const;
 
     enum EMouseState
@@ -166,8 +166,8 @@ private:
                           bool ignore_additional_masks) const;
 
     S32             loadBindingMode(const LLViewerInput::KeyMode& keymode, S32 mode);
-    BOOL            bindKey(const S32 mode, const KEY key, const MASK mask, const std::string& function_name);
-    BOOL            bindMouse(const S32 mode, const EMouseClickType mouse, const MASK mask, const std::string& function_name);
+    bool            bindKey(const S32 mode, const KEY key, const MASK mask, const std::string& function_name);
+    bool            bindMouse(const S32 mode, const EMouseClickType mouse, const MASK mask, const std::string& function_name);
     void            resetBindings();
 
     // Hold all the ugly stuff torn out to make LLKeyboard non-viewer-specific here
@@ -186,7 +186,7 @@ private:
     typedef std::map<U32, U32> key_remap_t;
     key_remap_t     mRemapKeys[MODE_COUNT];
     std::set<KEY>   mKeysSkippedByUI;
-    BOOL            mKeyHandledByUI[KEY_COUNT];     // key processed successfully by UI
+    bool            mKeyHandledByUI[KEY_COUNT];     // key processed successfully by UI
 
     // This is indentical to what llkeyboard does (mKeyRepeated, mKeyLevel, mKeyDown e t c),
     // just instead of remembering individually as bools,  we record state as enum
diff --git a/indra/newview/llviewerinventory.cpp b/indra/newview/llviewerinventory.cpp
index 16810efa01..96541b030c 100644
--- a/indra/newview/llviewerinventory.cpp
+++ b/indra/newview/llviewerinventory.cpp
@@ -298,7 +298,7 @@ public:
             return false;
         }
         LLUUID inventory_id;
-        if (!inventory_id.set(params[0], FALSE))
+        if (!inventory_id.set(params[0], false))
         {
             return false;
         }
@@ -406,7 +406,7 @@ void LLViewerInventoryItem::cloneViewerItem(LLPointer<LLViewerInventoryItem>& ne
     }
 }
 
-void LLViewerInventoryItem::updateServer(BOOL is_new) const
+void LLViewerInventoryItem::updateServer(bool is_new) const
 {
     if(!mIsComplete)
     {
@@ -494,24 +494,24 @@ void LLViewerInventoryItem::fetchFromServer(void) const
 }
 
 // virtual
-BOOL LLViewerInventoryItem::unpackMessage(const LLSD& item)
+bool LLViewerInventoryItem::unpackMessage(const LLSD& item)
 {
-    BOOL rv = LLInventoryItem::fromLLSD(item);
+    bool rv = LLInventoryItem::fromLLSD(item);
 
     LLLocalizedInventoryItemsDictionary::getInstance()->localizeInventoryObjectName(mName);
 
-    mIsComplete = TRUE;
+    mIsComplete = true;
     return rv;
 }
 
 // virtual
-BOOL LLViewerInventoryItem::unpackMessage(LLMessageSystem* msg, const char* block, S32 block_num)
+bool LLViewerInventoryItem::unpackMessage(LLMessageSystem* msg, const char* block, S32 block_num)
 {
-    BOOL rv = LLInventoryItem::unpackMessage(msg, block, block_num);
+    bool rv = LLInventoryItem::unpackMessage(msg, block, block_num);
 
     LLLocalizedInventoryItemsDictionary::getInstance()->localizeInventoryObjectName(mName);
 
-    mIsComplete = TRUE;
+    mIsComplete = true;
     return rv;
 }
 
@@ -540,14 +540,14 @@ void LLViewerInventoryItem::packMessage(LLMessageSystem* msg) const
 }
 
 // virtual
-BOOL LLViewerInventoryItem::importLegacyStream(std::istream& input_stream)
+bool LLViewerInventoryItem::importLegacyStream(std::istream& input_stream)
 {
-    BOOL rv = LLInventoryItem::importLegacyStream(input_stream);
-    mIsComplete = TRUE;
+    bool rv = LLInventoryItem::importLegacyStream(input_stream);
+    mIsComplete = true;
     return rv;
 }
 
-void LLViewerInventoryItem::updateParentOnServer(BOOL restamp) const
+void LLViewerInventoryItem::updateParentOnServer(bool restamp) const
 {
     LLMessageSystem* msg = gMessageSystem;
     msg->newMessageFast(_PREHASH_MoveInventoryItem);
@@ -628,7 +628,7 @@ void LLViewerInventoryCategory::packMessage(LLMessageSystem* msg) const
     msg->addStringFast(_PREHASH_Name, mName);
 }
 
-void LLViewerInventoryCategory::updateParentOnServer(BOOL restamp) const
+void LLViewerInventoryCategory::updateParentOnServer(bool restamp) const
 {
     LLMessageSystem* msg = gMessageSystem;
     msg->newMessageFast(_PREHASH_MoveInventoryFolder);
@@ -643,7 +643,7 @@ void LLViewerInventoryCategory::updateParentOnServer(BOOL restamp) const
     gAgent.sendReliableMessage();
 }
 
-void LLViewerInventoryCategory::updateServer(BOOL is_new) const
+void LLViewerInventoryCategory::updateServer(bool is_new) const
 {
     // communicate that change with the server.
 
@@ -746,7 +746,7 @@ S32 LLViewerInventoryCategory::getViewerDescendentCount() const
     S32 descendents_actual = 0;
     if(cats && items)
     {
-        descendents_actual = cats->size() + items->size();
+        descendents_actual = static_cast<S32>(cats->size() + items->size());
     }
     return descendents_actual;
 }
@@ -807,7 +807,7 @@ bool LLViewerInventoryCategory::acceptItem(LLInventoryItem* inv_item)
 void LLViewerInventoryCategory::determineFolderType()
 {
     /* Do NOT uncomment this code.  This is for future 2.1 support of ensembles.
-    llassert(FALSE);
+    llassert(false);
     LLFolderType::EType original_type = getPreferredType();
     if (LLFolderType::lookupIsProtectedType(original_type))
         return;
@@ -816,7 +816,7 @@ void LLViewerInventoryCategory::determineFolderType()
     U64 folder_invalid = 0;
     LLInventoryModel::cat_array_t category_array;
     LLInventoryModel::item_array_t item_array;
-    gInventory.collectDescendents(getUUID(),category_array,item_array,FALSE);
+    gInventory.collectDescendents(getUUID(),category_array,item_array,false);
 
     // For ensembles
     if (category_array.empty())
@@ -851,7 +851,7 @@ void LLViewerInventoryCategory::determineFolderType()
     {
         changeType(LLFolderType::FT_NONE);
     }
-    llassert(FALSE);
+    llassert(false);
     */
 }
 
@@ -882,9 +882,9 @@ void LLViewerInventoryCategory::localizeName()
 }
 
 // virtual
-BOOL LLViewerInventoryCategory::unpackMessage(const LLSD& category)
+bool LLViewerInventoryCategory::unpackMessage(const LLSD& category)
 {
-    BOOL rv = LLInventoryCategory::fromLLSD(category);
+    bool rv = LLInventoryCategory::fromLLSD(category);
     localizeName();
     return rv;
 }
@@ -1003,7 +1003,7 @@ void set_default_permissions(LLViewerInventoryItem* item, std::string perm_type)
 
         item->setPermissions(perm);
 
-        item->updateServer(FALSE);
+        item->updateServer(false);
     }
 }
 
@@ -1039,7 +1039,7 @@ void create_gesture_cb(const LLUUID& inv_item)
 
             LLPreviewGesture* preview = LLPreviewGesture::show(inv_item,  LLUUID::null);
             // Force to be entirely onscreen.
-            gFloaterView->adjustToFitScreen(preview, FALSE);
+            gFloaterView->adjustToFitScreen(preview, false);
         }
     }
 }
@@ -1375,7 +1375,7 @@ void move_inventory_item(
     msg->nextBlockFast(_PREHASH_AgentData);
     msg->addUUIDFast(_PREHASH_AgentID, agent_id);
     msg->addUUIDFast(_PREHASH_SessionID, session_id);
-    msg->addBOOLFast(_PREHASH_Stamp, FALSE);
+    msg->addBOOLFast(_PREHASH_Stamp, false);
     msg->nextBlockFast(_PREHASH_InventoryData);
     msg->addUUIDFast(_PREHASH_ItemID, item_id);
     msg->addUUIDFast(_PREHASH_FolderID, parent_id);
@@ -1594,7 +1594,7 @@ void purge_descendents_of(const LLUUID& id, LLPointer<LLInventoryCallback> cb)
             // Remove items from clipboard or it will remain active even if there is nothing to paste/copy
             LLInventoryModel::cat_array_t categories;
             LLInventoryModel::item_array_t items;
-            gInventory.collectDescendents(id, categories, items, TRUE);
+            gInventory.collectDescendents(id, categories, items, true);
 
             for (LLInventoryModel::cat_array_t::const_iterator it = categories.begin(); it != categories.end(); ++it)
             {
@@ -1837,7 +1837,7 @@ void menu_create_inventory_item(LLInventoryPanel* panel, LLUUID dest_id, const L
                 LLInventoryPanel* panel = static_cast<LLInventoryPanel*>(handle.get());
                 if (panel)
                 {
-                    panel->setSelectionByID(new_category_id, TRUE);
+                    panel->setSelectionByID(new_category_id, true);
                 }
                 LL_DEBUGS(LOG_INV) << "Done creating inventory: " << new_category_id << LL_ENDL;
             };
@@ -1934,7 +1934,7 @@ void menu_create_inventory_item(LLInventoryPanel* panel, LLUUID dest_id, const L
     }
     if(panel)
     {
-        panel->getRootFolder()->setNeedsAutoRename(TRUE);
+        panel->getRootFolder()->setNeedsAutoRename(true);
     }
 }
 
@@ -2146,7 +2146,7 @@ U32 LLViewerInventoryItem::getCRC32() const
 
 // *TODO: mantipov: should be removed with LMSortPrefix patch in llinventorymodel.cpp, EXT-3985
 static char getSeparator() { return '@'; }
-BOOL LLViewerInventoryItem::extractSortFieldAndDisplayName(const std::string& name, S32* sortField, std::string* displayName)
+bool LLViewerInventoryItem::extractSortFieldAndDisplayName(const std::string& name, S32* sortField, std::string* displayName)
 {
     using std::string;
     using std::stringstream;
@@ -2154,7 +2154,7 @@ BOOL LLViewerInventoryItem::extractSortFieldAndDisplayName(const std::string& na
     const char separator = getSeparator();
     const string::size_type separatorPos = name.find(separator, 0);
 
-    BOOL result = FALSE;
+    bool result = false;
 
     if (separatorPos < string::npos)
     {
@@ -2175,7 +2175,7 @@ BOOL LLViewerInventoryItem::extractSortFieldAndDisplayName(const std::string& na
             *displayName = name.substr(separatorPos + 1, string::npos);
         }
 
-        result = TRUE;
+        result = true;
     }
 
     return result;
@@ -2240,9 +2240,9 @@ PermissionMask LLViewerInventoryItem::getPermissionMask() const
 {
     const LLPermissions& permissions = getPermissions();
 
-    BOOL copy = permissions.allowCopyBy(gAgent.getID());
-    BOOL mod = permissions.allowModifyBy(gAgent.getID());
-    BOOL xfer = permissions.allowOperationBy(PERM_TRANSFER, gAgent.getID());
+    bool copy = permissions.allowCopyBy(gAgent.getID());
+    bool mod = permissions.allowModifyBy(gAgent.getID());
+    bool xfer = permissions.allowOperationBy(PERM_TRANSFER, gAgent.getID());
     PermissionMask perm_mask = 0;
     if (copy) perm_mask |= PERM_COPY;
     if (mod)  perm_mask |= PERM_MODIFY;
@@ -2305,11 +2305,11 @@ LLUUID find_possible_item_for_regeneration(const LLViewerInventoryItem *target_i
 
 // This currently dosen't work, because the sim does not allow us
 // to change an item's assetID.
-BOOL LLViewerInventoryItem::regenerateLink()
+bool LLViewerInventoryItem::regenerateLink()
 {
     const LLUUID target_item_id = find_possible_item_for_regeneration(this);
     if (target_item_id.isNull())
-        return FALSE;
+        return false;
     LLViewerInventoryCategory::cat_array_t cats;
     LLViewerInventoryItem::item_array_t items;
     LLAssetIDMatches asset_id_matches(getAssetUUID());
@@ -2324,9 +2324,9 @@ BOOL LLViewerInventoryItem::regenerateLink()
     {
         LLViewerInventoryItem *item = (*item_iter);
         item->setAssetUUID(target_item_id);
-        item->updateServer(FALSE);
+        item->updateServer(false);
         gInventory.addChangedMask(LLInventoryObserver::REBUILD, item->getUUID());
     }
     gInventory.notifyObservers();
-    return TRUE;
+    return true;
 }
diff --git a/indra/newview/llviewerinventory.h b/indra/newview/llviewerinventory.h
index 158965fc88..21a6606253 100644
--- a/indra/newview/llviewerinventory.h
+++ b/indra/newview/llviewerinventory.h
@@ -56,7 +56,7 @@ public:
 
 protected:
     ~LLViewerInventoryItem( void ); // ref counted
-    BOOL extractSortFieldAndDisplayName(S32* sortField, std::string* displayName) const { return extractSortFieldAndDisplayName(mName, sortField, displayName); }
+    bool extractSortFieldAndDisplayName(S32* sortField, std::string* displayName) const { return extractSortFieldAndDisplayName(mName, sortField, displayName); }
     mutable std::string mDisplayName;
 
 public:
@@ -83,7 +83,7 @@ public:
     virtual time_t getCreationDate() const;
     virtual U32 getCRC32() const; // really more of a checksum.
 
-    static BOOL extractSortFieldAndDisplayName(const std::string& name, S32* sortField, std::string* displayName);
+    static bool extractSortFieldAndDisplayName(const std::string& name, S32* sortField, std::string* displayName);
 
     // construct a complete viewer inventory item
     LLViewerInventoryItem(const LLUUID& uuid, const LLUUID& parent_uuid,
@@ -125,14 +125,14 @@ public:
     void cloneViewerItem(LLPointer<LLViewerInventoryItem>& newitem) const;
 
     // virtual methods
-    virtual void updateParentOnServer(BOOL restamp) const;
-    virtual void updateServer(BOOL is_new) const;
+    virtual void updateParentOnServer(bool restamp) const;
+    virtual void updateServer(bool is_new) const;
     void fetchFromServer(void) const;
 
     virtual void packMessage(LLMessageSystem* msg) const;
-    virtual BOOL unpackMessage(LLMessageSystem* msg, const char* block, S32 block_num = 0);
-    virtual BOOL unpackMessage(const LLSD& item);
-    virtual BOOL importLegacyStream(std::istream& input_stream);
+    virtual bool unpackMessage(LLMessageSystem* msg, const char* block, S32 block_num = 0);
+    virtual bool unpackMessage(const LLSD& item);
+    virtual bool importLegacyStream(std::istream& input_stream);
 
     // new methods
     bool isFinished() const { return mIsComplete; }
@@ -161,7 +161,7 @@ public:
     void onCallingCardNameLookup(const LLUUID& id, const LLAvatarName& name);
 
     // If this is a broken link, try to fix it and any other identical link.
-    BOOL regenerateLink();
+    bool regenerateLink();
 
 public:
     bool mIsComplete;
@@ -197,8 +197,8 @@ public:
     LLViewerInventoryCategory(const LLViewerInventoryCategory* other);
     void copyViewerCategory(const LLViewerInventoryCategory* other);
 
-    virtual void updateParentOnServer(BOOL restamp_children) const;
-    virtual void updateServer(BOOL is_new) const;
+    virtual void updateParentOnServer(bool restamp_children) const;
+    virtual void updateServer(bool is_new) const;
 
     virtual void packMessage(LLMessageSystem* msg) const;
 
@@ -238,7 +238,7 @@ public:
     void determineFolderType();
     void changeType(LLFolderType::EType new_folder_type);
     virtual void unpackMessage(LLMessageSystem* msg, const char* block, S32 block_num = 0);
-    virtual BOOL unpackMessage(const LLSD& category);
+    virtual bool unpackMessage(const LLSD& category);
 
     // returns true if the category object will accept the incoming item
     bool acceptItem(LLInventoryItem* inv_item);
diff --git a/indra/newview/llviewerjoint.cpp b/indra/newview/llviewerjoint.cpp
index 75dcb8af52..3c5c4752df 100644
--- a/indra/newview/llviewerjoint.cpp
+++ b/indra/newview/llviewerjoint.cpp
@@ -38,7 +38,7 @@
 #include "llvoavatar.h"
 #include "pipeline.h"
 
-static const S32 MIN_PIXEL_AREA_3PASS_HAIR = 64*64;
+static constexpr S32 MIN_PIXEL_AREA_3PASS_HAIR = 64*64;
 
 //-----------------------------------------------------------------------------
 // LLViewerJoint()
@@ -67,7 +67,7 @@ LLViewerJoint::~LLViewerJoint()
 //--------------------------------------------------------------------
 // render()
 //--------------------------------------------------------------------
-U32 LLViewerJoint::render( F32 pixelArea, BOOL first_pass, BOOL is_dummy )
+U32 LLViewerJoint::render( F32 pixelArea, bool first_pass, bool is_dummy )
 {
     stop_glerror();
 
@@ -107,13 +107,13 @@ U32 LLViewerJoint::render( F32 pixelArea, BOOL first_pass, BOOL is_dummy )
                 // second pass writes to z buffer only
                 gGL.setColorMask(false, false);
                 {
-                    triangle_count += drawShape( pixelArea, FALSE, is_dummy  );
+                    triangle_count += drawShape( pixelArea, false, is_dummy  );
                 }
                 // third past respects z buffer and writes color
                 gGL.setColorMask(true, false);
                 {
                     LLGLDepthTest gls_depth(GL_TRUE, GL_FALSE);
-                    triangle_count += drawShape( pixelArea, FALSE, is_dummy  );
+                    triangle_count += drawShape( pixelArea, false, is_dummy  );
                 }
             }
             else
@@ -127,7 +127,7 @@ U32 LLViewerJoint::render( F32 pixelArea, BOOL first_pass, BOOL is_dummy )
                 // Render Outside (write to the Z buffer)
                 glCullFace(GL_BACK);
                 {
-                    triangle_count += drawShape( pixelArea, FALSE, is_dummy  );
+                    triangle_count += drawShape( pixelArea, false, is_dummy  );
                 }
             }
         }
@@ -149,7 +149,7 @@ U32 LLViewerJoint::render( F32 pixelArea, BOOL first_pass, BOOL is_dummy )
         F32 jointLOD = joint->getLOD();
         if (pixelArea >= jointLOD || sDisableLOD)
         {
-            triangle_count += joint->render( pixelArea, TRUE, is_dummy );
+            triangle_count += joint->render( pixelArea, true, is_dummy );
 
             if (jointLOD != DEFAULT_AVATAR_JOINT_LOD)
             {
@@ -164,7 +164,7 @@ U32 LLViewerJoint::render( F32 pixelArea, BOOL first_pass, BOOL is_dummy )
 //--------------------------------------------------------------------
 // drawShape()
 //--------------------------------------------------------------------
-U32 LLViewerJoint::drawShape( F32 pixelArea, BOOL first_pass, BOOL is_dummy )
+U32 LLViewerJoint::drawShape( F32 pixelArea, bool first_pass, bool is_dummy )
 {
     return 0;
 }
diff --git a/indra/newview/llviewerjoint.h b/indra/newview/llviewerjoint.h
index 67d83908bd..7f52ca9623 100644
--- a/indra/newview/llviewerjoint.h
+++ b/indra/newview/llviewerjoint.h
@@ -54,11 +54,11 @@ public:
     // Traverses the entire joint hierarchy, setting up
     // transforms and calling the drawShape().
     // Derived classes may add text/graphic output.
-    virtual U32 render( F32 pixelArea, BOOL first_pass = TRUE, BOOL is_dummy = FALSE ); // Returns triangle count
+    virtual U32 render( F32 pixelArea, bool first_pass = true, bool is_dummy = false ); // Returns triangle count
 
     // Draws the shape attached to a joint.
     // Called by render().
-    virtual U32 drawShape( F32 pixelArea, BOOL first_pass = TRUE, BOOL is_dummy = FALSE );
+    virtual U32 drawShape( F32 pixelArea, bool first_pass = true, bool is_dummy = false );
     virtual void drawNormals() {}
 };
 
diff --git a/indra/newview/llviewerjointattachment.cpp b/indra/newview/llviewerjointattachment.cpp
index d7fe28d77c..e733dafcae 100644
--- a/indra/newview/llviewerjointattachment.cpp
+++ b/indra/newview/llviewerjointattachment.cpp
@@ -45,19 +45,19 @@
 #include "llglheaders.h"
 
 extern LLPipeline gPipeline;
-const F32 MAX_ATTACHMENT_DIST = 3.5f; // meters
+constexpr F32 MAX_ATTACHMENT_DIST = 3.5f; // meters
 
 //-----------------------------------------------------------------------------
 // LLViewerJointAttachment()
 //-----------------------------------------------------------------------------
 LLViewerJointAttachment::LLViewerJointAttachment() :
-    mVisibleInFirst(FALSE),
+    mVisibleInFirst(false),
     mGroup(0),
-    mIsHUDAttachment(FALSE),
+    mIsHUDAttachment(false),
     mPieSlice(-1)
 {
-    mValid = FALSE;
-    mUpdateXform = FALSE;
+    mValid = false;
+    mUpdateXform = false;
     mAttachedObjects.clear();
 }
 
@@ -71,15 +71,15 @@ LLViewerJointAttachment::~LLViewerJointAttachment()
 //-----------------------------------------------------------------------------
 // isTransparent()
 //-----------------------------------------------------------------------------
-BOOL LLViewerJointAttachment::isTransparent()
+bool LLViewerJointAttachment::isTransparent()
 {
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
 // drawShape()
 //-----------------------------------------------------------------------------
-U32 LLViewerJointAttachment::drawShape( F32 pixelArea, BOOL first_pass, BOOL is_dummy )
+U32 LLViewerJointAttachment::drawShape( F32 pixelArea, bool first_pass, bool is_dummy )
 {
     if (LLVOAvatar::sShowAttachmentPoints)
     {
@@ -103,7 +103,7 @@ void LLViewerJointAttachment::setupDrawable(LLViewerObject *object)
         return;
     if (object->mDrawable->isActive())
     {
-        object->mDrawable->makeStatic(FALSE);
+        object->mDrawable->makeStatic(false);
     }
 
     object->mDrawable->mXform.setParent(getXform()); // LLViewerJointAttachment::lazyAttach
@@ -162,7 +162,7 @@ void LLViewerJointAttachment::setupDrawable(LLViewerObject *object)
 //-----------------------------------------------------------------------------
 // addObject()
 //-----------------------------------------------------------------------------
-BOOL LLViewerJointAttachment::addObject(LLViewerObject* object)
+bool LLViewerJointAttachment::addObject(LLViewerObject* object)
 {
     object->extractAttachmentItemID();
 
@@ -184,7 +184,7 @@ BOOL LLViewerJointAttachment::addObject(LLViewerObject* object)
 
         // If this happens to be attached to self, then detach.
         LLVOAvatarSelf::detachAttachmentIntoInventory(object->getAttachmentItemID());
-        return FALSE;
+        return false;
     }
 
     mAttachedObjects.push_back(object);
@@ -194,7 +194,7 @@ BOOL LLViewerJointAttachment::addObject(LLViewerObject* object)
     {
         if (object->mText.notNull())
         {
-            object->mText->setOnHUDAttachment(TRUE);
+            object->mText->setOnHUDAttachment(true);
         }
         LLViewerObject::const_child_list_t& child_list = object->getChildren();
         for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin();
@@ -203,14 +203,14 @@ BOOL LLViewerJointAttachment::addObject(LLViewerObject* object)
             LLViewerObject* childp = *iter;
             if (childp && childp->mText.notNull())
             {
-                childp->mText->setOnHUDAttachment(TRUE);
+                childp->mText->setOnHUDAttachment(true);
             }
         }
     }
     calcLOD();
-    mUpdateXform = TRUE;
+    mUpdateXform = true;
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -236,7 +236,7 @@ void LLViewerJointAttachment::removeObject(LLViewerObject *object)
     }
 
     // force object visibile
-    setAttachmentVisibility(TRUE);
+    setAttachmentVisibility(true);
 
     mAttachedObjects.erase(iter);
     if (object->mDrawable.notNull())
@@ -244,7 +244,7 @@ void LLViewerJointAttachment::removeObject(LLViewerObject *object)
         //if object is active, make it static
         if(object->mDrawable->isActive())
         {
-            object->mDrawable->makeStatic(FALSE);
+            object->mDrawable->makeStatic(false);
         }
 
         LLVector3 cur_position = object->getRenderPosition();
@@ -252,7 +252,7 @@ void LLViewerJointAttachment::removeObject(LLViewerObject *object)
 
         object->mDrawable->mXform.setPosition(cur_position);
         object->mDrawable->mXform.setRotation(cur_rotation);
-        gPipeline.markMoved(object->mDrawable, TRUE);
+        gPipeline.markMoved(object->mDrawable, true);
         gPipeline.markTextured(object->mDrawable); // face may need to change draw pool to/from POOL_HUD
 
         if (mIsHUDAttachment)
@@ -294,7 +294,7 @@ void LLViewerJointAttachment::removeObject(LLViewerObject *object)
     {
         if (object->mText.notNull())
         {
-            object->mText->setOnHUDAttachment(FALSE);
+            object->mText->setOnHUDAttachment(false);
         }
         LLViewerObject::const_child_list_t& child_list = object->getChildren();
         for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin();
@@ -303,13 +303,13 @@ void LLViewerJointAttachment::removeObject(LLViewerObject *object)
             LLViewerObject* childp = *iter;
             if (childp->mText.notNull())
             {
-                childp->mText->setOnHUDAttachment(FALSE);
+                childp->mText->setOnHUDAttachment(false);
             }
         }
     }
     if (mAttachedObjects.size() == 0)
     {
-        mUpdateXform = FALSE;
+        mUpdateXform = false;
     }
     object->setAttachmentItemID(LLUUID::null);
 }
@@ -317,7 +317,7 @@ void LLViewerJointAttachment::removeObject(LLViewerObject *object)
 //-----------------------------------------------------------------------------
 // setAttachmentVisibility()
 //-----------------------------------------------------------------------------
-void LLViewerJointAttachment::setAttachmentVisibility(BOOL visible)
+void LLViewerJointAttachment::setAttachmentVisibility(bool visible)
 {
     for (attachedobjs_vec_t::const_iterator iter = mAttachedObjects.begin();
          iter != mAttachedObjects.end();
@@ -424,18 +424,18 @@ void LLViewerJointAttachment::calcLOD()
 //-----------------------------------------------------------------------------
 // updateLOD()
 //-----------------------------------------------------------------------------
-BOOL LLViewerJointAttachment::updateLOD(F32 pixel_area, BOOL activate)
+bool LLViewerJointAttachment::updateLOD(F32 pixel_area, bool activate)
 {
-    BOOL res = FALSE;
+    bool res{ false };
     if (!mValid)
     {
-        setValid(TRUE, TRUE);
-        res = TRUE;
+        setValid(true, true);
+        res = true;
     }
     return res;
 }
 
-BOOL LLViewerJointAttachment::isObjectAttached(const LLViewerObject *viewer_object) const
+bool LLViewerJointAttachment::isObjectAttached(const LLViewerObject *viewer_object) const
 {
     for (attachedobjs_vec_t::const_iterator iter = mAttachedObjects.begin();
          iter != mAttachedObjects.end();
@@ -444,10 +444,10 @@ BOOL LLViewerJointAttachment::isObjectAttached(const LLViewerObject *viewer_obje
         const LLViewerObject* attached_object = iter->get();
         if (attached_object == viewer_object)
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 const LLViewerObject *LLViewerJointAttachment::getAttachedObject(const LLUUID &object_id) const
@@ -462,7 +462,7 @@ const LLViewerObject *LLViewerJointAttachment::getAttachedObject(const LLUUID &o
             return attached_object;
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 LLViewerObject *LLViewerJointAttachment::getAttachedObject(const LLUUID &object_id)
@@ -477,5 +477,5 @@ LLViewerObject *LLViewerJointAttachment::getAttachedObject(const LLUUID &object_
             return attached_object;
         }
     }
-    return NULL;
+    return nullptr;
 }
diff --git a/indra/newview/llviewerjointattachment.h b/indra/newview/llviewerjointattachment.h
index 3ce790d38d..fe66949f73 100644
--- a/indra/newview/llviewerjointattachment.h
+++ b/indra/newview/llviewerjointattachment.h
@@ -47,36 +47,34 @@ public:
     LLViewerJointAttachment();
     virtual ~LLViewerJointAttachment();
 
-    //virtual U32 render( F32 pixelArea );  // Returns triangle count
-
     // Returns true if this object is transparent.
     // This is used to determine in which order to draw objects.
-    /*virtual*/ BOOL isTransparent();
+    bool isTransparent() override;
 
     // Draws the shape attached to a joint.
     // Called by render().
-    /*virtual*/ U32 drawShape( F32 pixelArea, BOOL first_pass, BOOL is_dummy );
+    U32 drawShape( F32 pixelArea, bool first_pass, bool is_dummy ) override;
 
-    /*virtual*/ BOOL updateLOD(F32 pixel_area, BOOL activate);
+    bool updateLOD(F32 pixel_area, bool activate) override;
 
     //
     // accessors
     //
 
     void setPieSlice(S32 pie_slice) { mPieSlice = pie_slice; }
-    void setVisibleInFirstPerson(BOOL visibility) { mVisibleInFirst = visibility; }
-    BOOL getVisibleInFirstPerson() const { return mVisibleInFirst; }
+    void setVisibleInFirstPerson(bool visibility) { mVisibleInFirst = visibility; }
+    bool getVisibleInFirstPerson() const { return mVisibleInFirst; }
     void setGroup(S32 group) { mGroup = group; }
     void setOriginalPosition(LLVector3 &position);
-    void setAttachmentVisibility(BOOL visible);
-    void setIsHUDAttachment(BOOL is_hud) { mIsHUDAttachment = is_hud; }
-    BOOL getIsHUDAttachment() const { return mIsHUDAttachment; }
+    void setAttachmentVisibility(bool visible);
+    void setIsHUDAttachment(bool is_hud) { mIsHUDAttachment = is_hud; }
+    bool getIsHUDAttachment() const { return mIsHUDAttachment; }
 
-    BOOL isAnimatable() const { return FALSE; }
+    bool isAnimatable() const override { return false; }
 
     S32 getGroup() const { return mGroup; }
     S32 getPieSlice() const { return mPieSlice; }
-    S32 getNumObjects() const { return mAttachedObjects.size(); }
+    S32 getNumObjects() const { return static_cast<S32>(mAttachedObjects.size()); }
     S32 getNumAnimatedObjects() const;
 
     void clampObjectPosition();
@@ -84,13 +82,13 @@ public:
     //
     // unique methods
     //
-    BOOL addObject(LLViewerObject* object);
+    bool addObject(LLViewerObject* object);
     void removeObject(LLViewerObject *object);
 
     //
     // attachments operations
     //
-    BOOL isObjectAttached(const LLViewerObject *viewer_object) const;
+    bool isObjectAttached(const LLViewerObject *viewer_object) const;
     const LLViewerObject *getAttachedObject(const LLUUID &object_id) const;
     LLViewerObject *getAttachedObject(const LLUUID &object_id);
 
@@ -103,10 +101,10 @@ protected:
     void setupDrawable(LLViewerObject *object);
 
 private:
-    BOOL            mVisibleInFirst;
+    bool            mVisibleInFirst;
     LLVector3       mOriginalPos;
     S32             mGroup;
-    BOOL            mIsHUDAttachment;
+    bool            mIsHUDAttachment;
     S32             mPieSlice;
 };
 
diff --git a/indra/newview/llviewerjointmesh.cpp b/indra/newview/llviewerjointmesh.cpp
index 46f994e15c..3ecf3c39b2 100644
--- a/indra/newview/llviewerjointmesh.cpp
+++ b/indra/newview/llviewerjointmesh.cpp
@@ -108,7 +108,7 @@ void LLViewerJointMesh::uploadJointMatrices()
     S32 joint_num;
     LLPolyMesh *reference_mesh = mMesh->getReferenceMesh();
     LLDrawPool *poolp = mFace ? mFace->getPool() : NULL;
-    BOOL hardware_skinning = (poolp && poolp->getShaderLevel() > 0) ? TRUE : FALSE;
+    bool hardware_skinning = (poolp && poolp->getShaderLevel() > 0);
 
     //calculate joint matrices
     for (joint_num = 0; joint_num < reference_mesh->mJointRenderData.size(); joint_num++)
@@ -123,7 +123,7 @@ void LLViewerJointMesh::uploadJointMatrices()
         gJointRotUnaligned[joint_num] = joint_mat.getMat3();
     }
 
-    BOOL last_pivot_uploaded = FALSE;
+    bool last_pivot_uploaded{ false };
     S32 j = 0;
 
     //upload joint pivots
@@ -144,11 +144,11 @@ void LLViewerJointMesh::uploadJointMatrices()
 
             gJointPivot[j++] = child_pivot;
 
-            last_pivot_uploaded = TRUE;
+            last_pivot_uploaded = true;
         }
         else
         {
-            last_pivot_uploaded = FALSE;
+            last_pivot_uploaded = false;
         }
     }
 
@@ -216,7 +216,7 @@ int compare_int(const void *a, const void *b)
 //--------------------------------------------------------------------
 // LLViewerJointMesh::drawShape()
 //--------------------------------------------------------------------
-U32 LLViewerJointMesh::drawShape( F32 pixelArea, BOOL first_pass, BOOL is_dummy)
+U32 LLViewerJointMesh::drawShape( F32 pixelArea, bool first_pass, bool is_dummy)
 {
     if (!mValid || !mMesh || !mFace || !mVisible ||
         !mFace->getVertexBuffer() ||
@@ -348,7 +348,7 @@ void LLViewerJointMesh::updateFaceSizes(U32 &num_vertices, U32& num_indices, F32
 // updateFaceData()
 //-----------------------------------------------------------------------------
 
-void LLViewerJointMesh::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind, bool terse_update)
+void LLViewerJointMesh::updateFaceData(LLFace *face, F32 pixel_area, bool damp_wind, bool terse_update)
 {
     //IF THIS FUNCTION BREAKS, SEE LLPOLYMESH CONSTRUCTOR AND CHECK ALIGNMENT OF INPUT ARRAYS
 
@@ -360,7 +360,7 @@ void LLViewerJointMesh::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_w
     }
 
     LLDrawPool *poolp = mFace->getPool();
-    BOOL hardware_skinning = (poolp && poolp->getShaderLevel() > 0) ? TRUE : FALSE;
+    bool hardware_skinning = (poolp && poolp->getShaderLevel() > 0);
 
     if (!hardware_skinning && terse_update)
     { //no need to do terse updates if we're doing software vertex skinning
@@ -431,7 +431,7 @@ void LLViewerJointMesh::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_w
 
             const S32 offset = (S32) mMesh->mFaceVertexOffset;
 
-            for (S32 i = 0; i < idx_count; ++i)
+            for (U32 i = 0; i < idx_count; ++i)
             {
                 *(idx++) = *(src_idx++)+offset;
             }
@@ -444,10 +444,10 @@ void LLViewerJointMesh::updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_w
 //-----------------------------------------------------------------------------
 // updateLOD()
 //-----------------------------------------------------------------------------
-BOOL LLViewerJointMesh::updateLOD(F32 pixel_area, BOOL activate)
+bool LLViewerJointMesh::updateLOD(F32 pixel_area, bool activate)
 {
-    BOOL valid = mValid;
-    setValid(activate, TRUE);
+    bool valid = mValid;
+    setValid(activate, true);
     return (valid != activate);
 }
 
diff --git a/indra/newview/llviewerjointmesh.h b/indra/newview/llviewerjointmesh.h
index deeec727a9..cfe8ecdb67 100644
--- a/indra/newview/llviewerjointmesh.h
+++ b/indra/newview/llviewerjointmesh.h
@@ -54,19 +54,19 @@ public:
     void uploadJointMatrices();
 
     // overloaded from base class
-    /*virtual*/ U32 drawShape( F32 pixelArea, BOOL first_pass, BOOL is_dummy );
+    U32 drawShape( F32 pixelArea, bool first_pass, bool is_dummy ) override;
 
     // necessary because MS's compiler warns on function inheritance via dominance in the diamond inheritance here.
     // warns even though LLViewerJoint holds the only non virtual implementation.
-    /*virtual*/ U32 render( F32 pixelArea, BOOL first_pass = TRUE, BOOL is_dummy = FALSE ) { return LLViewerJoint::render(pixelArea,first_pass,is_dummy);}
+    U32 render(F32 pixelArea, bool first_pass = true, bool is_dummy = false) override { return LLViewerJoint::render(pixelArea, first_pass, is_dummy); }
 
-    /*virtual*/ void updateFaceSizes(U32 &num_vertices, U32& num_indices, F32 pixel_area);
-    /*virtual*/ void updateFaceData(LLFace *face, F32 pixel_area, BOOL damp_wind = FALSE, bool terse_update = false);
-    /*virtual*/ BOOL updateLOD(F32 pixel_area, BOOL activate);
-    /*virtual*/ void updateJointGeometry();
-    /*virtual*/ void dump();
+    void updateFaceSizes(U32 &num_vertices, U32& num_indices, F32 pixel_area) override;
+    void updateFaceData(LLFace *face, F32 pixel_area, bool damp_wind = false, bool terse_update = false) override;
+    bool updateLOD(F32 pixel_area, bool activate) override;
+    void updateJointGeometry() override;
+    void dump() override;
 
-    /*virtual*/ BOOL isAnimatable() const { return FALSE; }
+    bool isAnimatable() const override { return false; }
 
 private:
 
diff --git a/indra/newview/llviewerjoystick.cpp b/indra/newview/llviewerjoystick.cpp
index 3a3f0b3d95..ce6dfa4ad1 100644
--- a/indra/newview/llviewerjoystick.cpp
+++ b/indra/newview/llviewerjoystick.cpp
@@ -244,19 +244,19 @@ void LLViewerJoystick::updateEnabled(bool autoenable)
 {
     if (mDriverState == JDS_UNINITIALIZED)
     {
-        gSavedSettings.setBOOL("JoystickEnabled", FALSE );
+        gSavedSettings.setBOOL("JoystickEnabled", false);
     }
     else
     {
         // autoenable if user specifically chose this device
         if (autoenable && (isLikeSpaceNavigator() || isDeviceUUIDSet()))
         {
-            gSavedSettings.setBOOL("JoystickEnabled", TRUE );
+            gSavedSettings.setBOOL("JoystickEnabled", true );
         }
     }
     if (!gSavedSettings.getBOOL("JoystickEnabled"))
     {
-        mOverrideCamera = FALSE;
+        mOverrideCamera = false;
     }
 }
 
@@ -264,7 +264,7 @@ void LLViewerJoystick::setOverrideCamera(bool val)
 {
     if (!gSavedSettings.getBOOL("JoystickEnabled"))
     {
-        mOverrideCamera = FALSE;
+        mOverrideCamera = false;
     }
     else
     {
@@ -352,7 +352,7 @@ void LLViewerJoystick::init(bool autoenable)
 
     loadDeviceIdFromSettings();
 
-    if (libinit == false)
+    if (!libinit)
     {
         // Note: The HotPlug callbacks are not actually getting called on Windows
         if (ndof_libinit(HotPlugAddCallback,
@@ -413,10 +413,10 @@ void LLViewerJoystick::init(bool autoenable)
                 {
                     LL_INFOS("Joystick") << "Failed to gather input devices. Falling back to ndof's init" << LL_ENDL;
                     // Failed to gather devices, init first suitable one
-                    mLastDeviceUUID = LLSD();
-                    void *preffered_device = NULL;
-                    initDevice(preffered_device);
-                }
+                mLastDeviceUUID = LLSD();
+                void *preffered_device = NULL;
+                initDevice(preffered_device);
+            }
             }
 
             if (mDriverState == JDS_INITIALIZING)
@@ -434,7 +434,7 @@ void LLViewerJoystick::init(bool autoenable)
     // Autoenable the joystick for recognized devices if nothing was connected previously
     if (!autoenable)
     {
-        autoenable = gSavedSettings.getString("JoystickInitialized").empty() ? true : false;
+        autoenable = gSavedSettings.getString("JoystickInitialized").empty();
     }
     updateEnabled(autoenable);
 
@@ -510,10 +510,10 @@ void LLViewerJoystick::initDevice(LLSD &guid)
         {
             LL_INFOS("Joystick") << "Failed to gather input devices. Falling back to ndof's init" << LL_ENDL;
             // Failed to gather devices from window, init first suitable one
-            void *preffered_device = NULL;
-            mLastDeviceUUID = LLSD();
-            initDevice(preffered_device);
-        }
+        void *preffered_device = NULL;
+        mLastDeviceUUID = LLSD();
+        initDevice(preffered_device);
+    }
     }
 
     if (mDriverState == JDS_INITIALIZING)
@@ -957,7 +957,7 @@ void LLViewerJoystick::moveAvatar(bool reset)
             else if (!button_held)
             {
                 button_held = true;
-                gAgent.setFlying(FALSE);
+                gAgent.setFlying(false);
             }
         }
         else if (!button_held)
@@ -1532,7 +1532,7 @@ void LLViewerJoystick::setSNDefaults()
 #if LL_DARWIN || LL_LINUX
     const float platformScale = 20.f;
     const float platformScaleAvXZ = 1.f;
-    // The SpaceNavigator doesn't act as a 3D cursor on OS X / Linux.
+    // The SpaceNavigator doesn't act as a 3D cursor on macOS / Linux.
     const bool is_3d_cursor = false;
 #else
     const float platformScale = 1.f;
diff --git a/indra/newview/llviewermedia.cpp b/indra/newview/llviewermedia.cpp
index e86cb7ab39..d3a13ce8b9 100644
--- a/indra/newview/llviewermedia.cpp
+++ b/indra/newview/llviewermedia.cpp
@@ -79,10 +79,10 @@
 #include <boost/bind.hpp>   // for SkinFolder listener
 #include <boost/signals2.hpp>
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 // *TODO: Consider enabling mipmaps (they have been disabled for a long time). Likely has a significant performance impact for tiled/high texture repeat media. Mip generation in a shader may also be an option if necessary.
-constexpr BOOL USE_MIPMAPS = FALSE;
+constexpr bool USE_MIPMAPS = false;
 
 void init_threaded_picker_load_dialog(LLPluginClassMedia* plugin, LLFilePicker::ELoadFilter filter, bool get_multiple)
 {
@@ -1661,13 +1661,13 @@ void LLViewerMediaImpl::destroyMediaSource()
     LLViewerMediaTexture* oldImage = LLViewerTextureManager::findMediaTexture( mTextureId );
     if (oldImage)
     {
-        oldImage->setPlaying(FALSE) ;
+        oldImage->setPlaying(false) ;
     }
 
     cancelMimeTypeProbe();
 
     {
-        LLMutexLock lock(&mLock); // Delay tear-down while bg thread is updating
+        LLCoros::LockType lock(mLock); // Delay tear-down while bg thread is updating
         if(mMediaSource)
         {
             mMediaSource->setDeleteOK(true) ;
@@ -2353,7 +2353,7 @@ void LLViewerMediaImpl::onMouseCaptureLost()
 }
 
 //////////////////////////////////////////////////////////////////////////////////////////
-BOOL LLViewerMediaImpl::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLViewerMediaImpl::handleMouseUp(S32 x, S32 y, MASK mask)
 {
     // NOTE: this is called when the mouse is released when we have capture.
     // Due to the way mouse coordinates are mapped to the object, we can't use the x and y coordinates that come in with the event.
@@ -2361,10 +2361,10 @@ BOOL LLViewerMediaImpl::handleMouseUp(S32 x, S32 y, MASK mask)
     if(hasMouseCapture())
     {
         // Release the mouse -- this will also send a mouseup to the media
-        gFocusMgr.setMouseCapture( FALSE );
+        gFocusMgr.setMouseCapture( nullptr );
     }
 
-    return TRUE;
+    return true;
 }
 
 //////////////////////////////////////////////////////////////////////////////////////////
@@ -2690,7 +2690,13 @@ void LLViewerMediaImpl::mimeDiscoveryCoro(std::string url)
         {
             if (initializeMedia(mimeType))
             {
-                loadURI();
+                ref();
+                LLAppViewer::instance()->postToMainCoro([this]()
+                    {
+                        loadURI();
+                        unref();
+                    });
+
             }
         }
 
@@ -2773,7 +2779,7 @@ bool LLViewerMediaImpl::handleUnicodeCharHere(llwchar uni_char)
         {
             LLSD native_key_data = gViewerWindow->getWindow()->getNativeKeyData();
 
-            mMediaSource->textInput(wstring_to_utf8str(LLWString(1, uni_char)), gKeyboard->currentMask(FALSE), native_key_data);
+            mMediaSource->textInput(wstring_to_utf8str(LLWString(1, uni_char)), gKeyboard->currentMask(false), native_key_data);
         }
     }
 
@@ -2783,7 +2789,7 @@ bool LLViewerMediaImpl::handleUnicodeCharHere(llwchar uni_char)
 //////////////////////////////////////////////////////////////////////////////////////////
 bool LLViewerMediaImpl::canNavigateForward()
 {
-    BOOL result = FALSE;
+    bool result = false;
     if (mMediaSource)
     {
         result = mMediaSource->getHistoryForwardAvailable();
@@ -2794,7 +2800,7 @@ bool LLViewerMediaImpl::canNavigateForward()
 //////////////////////////////////////////////////////////////////////////////////////////
 bool LLViewerMediaImpl::canNavigateBack()
 {
-    BOOL result = FALSE;
+    bool result = false;
     if (mMediaSource)
     {
         result = mMediaSource->getHistoryBackAvailable();
@@ -2949,7 +2955,7 @@ bool LLViewerMediaImpl::preMediaTexUpdate(LLViewerMediaTexture*& media_tex, U8*&
             //S32 media_depth = mMediaSource->getTextureDepth();
 
             // Since we're updating this texture, we know it's playing.  Tell the texture to do its replacement magic so it gets rendered.
-            media_tex->setPlaying(TRUE);
+            media_tex->setPlaying(true);
 
             if (mMediaSource->getDirty(&dirty_rect))
             {
@@ -2984,7 +2990,7 @@ bool LLViewerMediaImpl::preMediaTexUpdate(LLViewerMediaTexture*& media_tex, U8*&
 void LLViewerMediaImpl::doMediaTexUpdate(LLViewerMediaTexture* media_tex, U8* data, S32 data_width, S32 data_height, S32 x_pos, S32 y_pos, S32 width, S32 height, bool sync)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_MEDIA;
-    LLMutexLock lock(&mLock); // don't allow media source tear-down during update
+    LLCoros::LockType lock(mLock); // don't allow media source tear-down during update
 
     // wrap "data" in an LLImageRaw but do NOT make a copy
     LLPointer<LLImageRaw> raw = new LLImageRaw(data, media_tex->getWidth(), media_tex->getHeight(), media_tex->getComponents(), true);
@@ -2996,7 +3002,7 @@ void LLViewerMediaImpl::doMediaTexUpdate(LLViewerMediaTexture* media_tex, U8* da
     // -Cosmic,2023-04-04
     // Allocate GL texture based on LLImageRaw but do NOT copy to GL
     LLGLuint tex_name = 0;
-    media_tex->createGLTexture(0, raw, 0, TRUE, LLGLTexture::OTHER, true, &tex_name);
+    media_tex->createGLTexture(0, raw, 0, true, LLGLTexture::OTHER, true, &tex_name);
 
     // copy just the subimage covered by the image raw to GL
     media_tex->setSubImage(data, data_width, data_height, x_pos, y_pos, width, height, tex_name);
@@ -3514,13 +3520,13 @@ LLViewerMediaImpl::cut()
 
 ////////////////////////////////////////////////////////////////////////////////
 // virtual
-BOOL
+bool
 LLViewerMediaImpl::canCut() const
 {
     if (mMediaSource)
         return mMediaSource->canCut();
     else
-        return FALSE;
+        return false;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -3534,13 +3540,13 @@ LLViewerMediaImpl::copy()
 
 ////////////////////////////////////////////////////////////////////////////////
 // virtual
-BOOL
+bool
 LLViewerMediaImpl::canCopy() const
 {
     if (mMediaSource)
         return mMediaSource->canCopy();
     else
-        return FALSE;
+        return false;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -3554,21 +3560,21 @@ LLViewerMediaImpl::paste()
 
 ////////////////////////////////////////////////////////////////////////////////
 // virtual
-BOOL
+bool
 LLViewerMediaImpl::canPaste() const
 {
     if (mMediaSource)
         return mMediaSource->canPaste();
     else
-        return FALSE;
+        return false;
 }
 
-void LLViewerMediaImpl::setUpdated(BOOL updated)
+void LLViewerMediaImpl::setUpdated(bool updated)
 {
     mIsUpdated = updated ;
 }
 
-BOOL LLViewerMediaImpl::isUpdated()
+bool LLViewerMediaImpl::isUpdated()
 {
     return mIsUpdated ;
 }
diff --git a/indra/newview/llviewermedia.h b/indra/newview/llviewermedia.h
index 33092f1435..5753615a43 100644
--- a/indra/newview/llviewermedia.h
+++ b/indra/newview/llviewermedia.h
@@ -182,7 +182,7 @@ private:
 
 // Implementation functions not exported into header file
 class LLViewerMediaImpl
-    :   public LLMouseHandler, public LLRefCount, public LLPluginClassMediaOwner, public LLViewerMediaEventEmitter, public LLEditMenuHandler
+    :   public LLMouseHandler, public LLThreadSafeRefCount, public LLPluginClassMediaOwner, public LLViewerMediaEventEmitter, public LLEditMenuHandler
 {
     LOG_CLASS(LLViewerMediaImpl);
 public:
@@ -317,45 +317,45 @@ public:
 
     // need these to handle mouseup...
     /*virtual*/ void    onMouseCaptureLost();
-    /*virtual*/ BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
+    /*virtual*/ bool    handleMouseUp(S32 x, S32 y, MASK mask);
 
     // Grr... the only thing I want as an LLMouseHandler are the onMouseCaptureLost and handleMouseUp calls.
     // Sadly, these are all pure virtual, so I have to supply implementations here:
-    /*virtual*/ BOOL    handleMouseDown(S32 x, S32 y, MASK mask) { return FALSE; };
-    /*virtual*/ BOOL    handleHover(S32 x, S32 y, MASK mask) { return FALSE; };
-    /*virtual*/ BOOL    handleScrollWheel(S32 x, S32 y, S32 clicks) { return FALSE; };
-    /*virtual*/ BOOL    handleScrollHWheel(S32 x, S32 y, S32 clicks) { return FALSE; };
-    /*virtual*/ BOOL    handleDoubleClick(S32 x, S32 y, MASK mask) { return FALSE; };
-    /*virtual*/ BOOL    handleRightMouseDown(S32 x, S32 y, MASK mask) { return FALSE; };
-    /*virtual*/ BOOL    handleRightMouseUp(S32 x, S32 y, MASK mask) { return FALSE; };
-    /*virtual*/ BOOL    handleToolTip(S32 x, S32 y, MASK mask) { return FALSE; };
-    /*virtual*/ BOOL    handleMiddleMouseDown(S32 x, S32 y, MASK mask) { return FALSE; };
-    /*virtual*/ BOOL    handleMiddleMouseUp(S32 x, S32 y, MASK mask) {return FALSE; };
+    /*virtual*/ bool    handleMouseDown(S32 x, S32 y, MASK mask) { return false; };
+    /*virtual*/ bool    handleHover(S32 x, S32 y, MASK mask) { return false; };
+    /*virtual*/ bool    handleScrollWheel(S32 x, S32 y, S32 clicks) { return false; };
+    /*virtual*/ bool    handleScrollHWheel(S32 x, S32 y, S32 clicks) { return false; };
+    /*virtual*/ bool    handleDoubleClick(S32 x, S32 y, MASK mask) { return false; };
+    /*virtual*/ bool    handleRightMouseDown(S32 x, S32 y, MASK mask) { return false; };
+    /*virtual*/ bool    handleRightMouseUp(S32 x, S32 y, MASK mask) { return false; };
+    /*virtual*/ bool    handleToolTip(S32 x, S32 y, MASK mask) { return false; };
+    /*virtual*/ bool    handleMiddleMouseDown(S32 x, S32 y, MASK mask) { return false; };
+    /*virtual*/ bool    handleMiddleMouseUp(S32 x, S32 y, MASK mask) {return false; };
     /*virtual*/ const std::string& getName() const;
 
     /*virtual*/ void    screenPointToLocal(S32 screen_x, S32 screen_y, S32* local_x, S32* local_y) const {};
     /*virtual*/ void    localPointToScreen(S32 local_x, S32 local_y, S32* screen_x, S32* screen_y) const {};
-    /*virtual*/ BOOL hasMouseCapture() { return gFocusMgr.getMouseCapture() == this; };
+    /*virtual*/ bool hasMouseCapture() { return gFocusMgr.getMouseCapture() == this; };
 
     // Inherited from LLPluginClassMediaOwner
     /*virtual*/ void handleMediaEvent(LLPluginClassMedia* plugin, LLPluginClassMediaOwner::EMediaEvent);
 
     // LLEditMenuHandler overrides
     /*virtual*/ void    cut();
-    /*virtual*/ BOOL    canCut() const;
+    /*virtual*/ bool    canCut() const;
 
     /*virtual*/ void    copy();
-    /*virtual*/ BOOL    canCopy() const;
+    /*virtual*/ bool    canCopy() const;
 
     /*virtual*/ void    paste();
-    /*virtual*/ BOOL    canPaste() const;
+    /*virtual*/ bool    canPaste() const;
 
     void addObject(LLVOVolume* obj) ;
     void removeObject(LLVOVolume* obj) ;
     const std::list< LLVOVolume* >* getObjectList() const ;
     LLVOVolume *getSomeObject();
-    void setUpdated(BOOL updated) ;
-    BOOL isUpdated() ;
+    void setUpdated(bool updated) ;
+    bool isUpdated() ;
 
     // updates the javascript object in the embedded browser with viewer values
     void updateJavascriptObject();
@@ -432,7 +432,7 @@ private:
 private:
     // a single media url with some data and an impl.
     std::shared_ptr<LLPluginClassMedia> mMediaSource;
-    LLMutex mLock;
+    LLCoros::Mutex mLock;
     F64     mZoomFactor;
     LLUUID mTextureId;
     bool  mMovieImageHasMips;
@@ -488,7 +488,7 @@ private:
     static std::vector<std::string> sMimeTypesFailed;
     LLPointer<LLImageRaw> mRawImage; //backing buffer for texture updates
 private:
-    BOOL mIsUpdated ;
+    bool mIsUpdated ;
     std::list< LLVOVolume* > mObjectList ;
 
     void mimeDiscoveryCoro(std::string url);
diff --git a/indra/newview/llviewermediafocus.cpp b/indra/newview/llviewermediafocus.cpp
index 978a9bc6de..c8d25180b9 100644
--- a/indra/newview/llviewermediafocus.cpp
+++ b/indra/newview/llviewermediafocus.cpp
@@ -125,7 +125,7 @@ void LLViewerMediaFocus::setFocusFace(LLPointer<LLViewerObject> objectp, S32 fac
 
         if(mMediaControls.get())
         {
-            if(face_auto_zoom && ! parcel->getMediaPreventCameraZoom())
+            if(face_auto_zoom && !static_cast<bool>(parcel->getMediaPreventCameraZoom()))
             {
                 // Zoom in on this face
                 mMediaControls.get()->resetZoomLevel(false);
@@ -211,7 +211,7 @@ LLVector3d LLViewerMediaFocus::setCameraZoom(LLViewerObject* object, LLVector3 n
     LLVector3d camera_pos;
     if (object)
     {
-        gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+        gAgentCamera.setFocusOnAvatar(false, ANIMATE);
 
         LLBBox bbox = object->getBoundingBoxAgent();
         LLVector3d center = gAgent.getPosGlobalFromAgent(bbox.getCenterAgent());
@@ -298,7 +298,7 @@ LLVector3d LLViewerMediaFocus::setCameraZoom(LLViewerObject* object, LLVector3 n
     else
     {
         // If we have no object, focus back on the avatar.
-        gAgentCamera.setFocusOnAvatar(TRUE, ANIMATE);
+        gAgentCamera.setFocusOnAvatar(true, ANIMATE);
     }
     return camera_pos;
 }
@@ -321,7 +321,7 @@ void LLViewerMediaFocus::onFocusLost()
     LLFocusableElement::onFocusLost();
 }
 
-BOOL LLViewerMediaFocus::handleKey(KEY key, MASK mask, BOOL called_from_parent)
+bool LLViewerMediaFocus::handleKey(KEY key, MASK mask, bool called_from_parent)
 {
     LLViewerMediaImpl* media_impl = getFocusedMediaImpl();
     if(media_impl)
@@ -346,7 +346,7 @@ BOOL LLViewerMediaFocus::handleKey(KEY key, MASK mask, BOOL called_from_parent)
     return true;
 }
 
-BOOL LLViewerMediaFocus::handleKeyUp(KEY key, MASK mask, BOOL called_from_parent)
+bool LLViewerMediaFocus::handleKeyUp(KEY key, MASK mask, bool called_from_parent)
 {
     LLViewerMediaImpl* media_impl = getFocusedMediaImpl();
     if (media_impl)
@@ -358,7 +358,7 @@ BOOL LLViewerMediaFocus::handleKeyUp(KEY key, MASK mask, BOOL called_from_parent
 
 
 
-BOOL LLViewerMediaFocus::handleUnicodeChar(llwchar uni_char, BOOL called_from_parent)
+bool LLViewerMediaFocus::handleUnicodeChar(llwchar uni_char, bool called_from_parent)
 {
     LLViewerMediaImpl* media_impl = getFocusedMediaImpl();
     if(media_impl)
@@ -366,26 +366,26 @@ BOOL LLViewerMediaFocus::handleUnicodeChar(llwchar uni_char, BOOL called_from_pa
     return true;
 }
 
-BOOL LLViewerMediaFocus::handleScrollWheel(const LLVector2& texture_coords, S32 clicks_x, S32 clicks_y)
+bool LLViewerMediaFocus::handleScrollWheel(const LLVector2& texture_coords, S32 clicks_x, S32 clicks_y)
 {
-    BOOL retval = FALSE;
+    bool retval = false;
     LLViewerMediaImpl* media_impl = getFocusedMediaImpl();
     if (media_impl && media_impl->hasMedia())
     {
-        media_impl->scrollWheel(texture_coords, clicks_x, clicks_y, gKeyboard->currentMask(TRUE));
-        retval = TRUE;
+        media_impl->scrollWheel(texture_coords, clicks_x, clicks_y, gKeyboard->currentMask(true));
+        retval = true;
     }
     return retval;
 }
 
-BOOL LLViewerMediaFocus::handleScrollWheel(S32 x, S32 y, S32 clicks_x, S32 clicks_y)
+bool LLViewerMediaFocus::handleScrollWheel(S32 x, S32 y, S32 clicks_x, S32 clicks_y)
 {
-    BOOL retval = FALSE;
+    bool retval = false;
     LLViewerMediaImpl* media_impl = getFocusedMediaImpl();
     if(media_impl && media_impl->hasMedia())
     {
-        media_impl->scrollWheel(x, y, clicks_x, clicks_y, gKeyboard->currentMask(TRUE));
-        retval = TRUE;
+        media_impl->scrollWheel(x, y, clicks_x, clicks_y, gKeyboard->currentMask(true));
+        retval = true;
     }
     return retval;
 }
diff --git a/indra/newview/llviewermediafocus.h b/indra/newview/llviewermediafocus.h
index 855be265fc..9a9fc72e70 100644
--- a/indra/newview/llviewermediafocus.h
+++ b/indra/newview/llviewermediafocus.h
@@ -55,11 +55,11 @@ public:
     void clearHover();
 
     bool    getFocus();
-    /*virtual*/ BOOL    handleKey(KEY key, MASK mask, BOOL called_from_parent) override;
-    /*virtual*/ BOOL    handleKeyUp(KEY key, MASK mask, BOOL called_from_parent) override;
-    /*virtual*/ BOOL    handleUnicodeChar(llwchar uni_char, BOOL called_from_parent) override;
-    BOOL handleScrollWheel(const LLVector2& texture_coords, S32 clicks_x, S32 clicks_y);
-    BOOL handleScrollWheel(S32 x, S32 y, S32 clicks_x, S32 clicks_y);
+    /*virtual*/ bool    handleKey(KEY key, MASK mask, bool called_from_parent) override;
+    /*virtual*/ bool    handleKeyUp(KEY key, MASK mask, bool called_from_parent) override;
+    /*virtual*/ bool    handleUnicodeChar(llwchar uni_char, bool called_from_parent) override;
+    bool handleScrollWheel(const LLVector2& texture_coords, S32 clicks_x, S32 clicks_y);
+    bool handleScrollWheel(S32 x, S32 y, S32 clicks_x, S32 clicks_y);
 
     void update();
 
diff --git a/indra/newview/llviewermenu.cpp b/indra/newview/llviewermenu.cpp
index 7f6c6e2571..75bef846fe 100644
--- a/indra/newview/llviewermenu.cpp
+++ b/indra/newview/llviewermenu.cpp
@@ -140,9 +140,11 @@
 #include "boost/unordered_map.hpp"
 #include <boost/regex.hpp>
 #include <boost/algorithm/string.hpp>
+#include <boost/json.hpp>
 #include "llcleanup.h"
 #include "llviewershadermgr.h"
 #include "gltfscenemanager.h"
+#include "gltf/asset.h"
 
 using namespace LLAvatarAppearanceDefines;
 
@@ -150,8 +152,8 @@ typedef LLPointer<LLViewerObject> LLViewerObjectPtr;
 
 static boost::unordered_map<std::string, LLStringExplicit> sDefaultItemLabels;
 
-BOOL enable_land_build(void*);
-BOOL enable_object_build(void*);
+bool enable_land_build(void*);
+bool enable_object_build(void*);
 
 LLVOAvatar* find_avatar_from_object( LLViewerObject* object );
 LLVOAvatar* find_avatar_from_object( const LLUUID& object_id );
@@ -161,15 +163,15 @@ void handle_test_load_url(void*);
 //
 // Evil hackish imported globals
 
-//extern BOOL   gHideSelectedObjects;
-//extern BOOL gAllowSelectAvatar;
-//extern BOOL gDebugAvatarRotation;
-extern BOOL gDebugClicks;
-extern BOOL gDebugWindowProc;
-extern BOOL gShaderProfileFrame;
+//extern bool   gHideSelectedObjects;
+//extern bool gAllowSelectAvatar;
+//extern bool gDebugAvatarRotation;
+extern bool gDebugClicks;
+extern bool gDebugWindowProc;
+extern bool gShaderProfileFrame;
 
-//extern BOOL gDebugTextEditorTips;
-//extern BOOL gDebugSelectMgr;
+//extern bool gDebugTextEditorTips;
+//extern bool gDebugSelectMgr;
 
 //
 // Globals
@@ -224,24 +226,25 @@ void handle_region_dump_temp_asset_data(void*);
 void handle_region_clear_temp_asset_data(void*);
 
 // Object pie menu
-BOOL sitting_on_selection();
+bool sitting_on_selection();
 
 void near_sit_object();
 //void label_sit_or_stand(std::string& label, void*);
 // buy and take alias into the same UI positions, so these
 // declarations handle this mess.
-BOOL is_selection_buy_not_take();
+bool is_selection_buy_not_take();
 S32 selection_price();
-BOOL enable_take();
+bool enable_take();
 void handle_object_show_inspector();
 void handle_avatar_show_inspector();
 bool confirm_take(const LLSD& notification, const LLSD& response, LLObjectSelectionHandle selection_handle);
+bool confirm_take_separate(const LLSD &notification, const LLSD &response, LLObjectSelectionHandle selection_handle);
 
 void handle_buy_object(LLSaleInfo sale_info);
 void handle_buy_contents(LLSaleInfo sale_info);
 
 // Land pie menu
-void near_sit_down_point(BOOL success, void *);
+void near_sit_down_point(bool success, void *);
 
 // Avatar pie menu
 
@@ -251,16 +254,16 @@ void near_sit_down_point(BOOL success, void *);
 void velocity_interpolate( void* );
 void handle_visual_leak_detector_toggle(void*);
 void handle_rebake_textures(void*);
-BOOL check_admin_override(void*);
+bool check_admin_override(void*);
 void handle_admin_override_toggle(void*);
 #ifdef TOGGLE_HACKED_GODLIKE_VIEWER
 void handle_toggle_hacked_godmode(void*);
-BOOL check_toggle_hacked_godmode(void*);
+bool check_toggle_hacked_godmode(void*);
 bool enable_toggle_hacked_godmode(void*);
 #endif
 
 void toggle_show_xui_names(void *);
-BOOL check_show_xui_names(void *);
+bool check_show_xui_names(void *);
 
 // Debug UI
 
@@ -310,7 +313,7 @@ void dump_select_mgr(void*);
 
 void dump_inventory(void*);
 void toggle_visibility(void*);
-BOOL get_visibility(void*);
+bool get_visibility(void*);
 
 // Avatar Pie menu
 void request_friendship(const LLUUID& agent_id);
@@ -323,7 +326,7 @@ void handle_dump_followcam(void*);
 void handle_viewer_enable_message_log(void*);
 void handle_viewer_disable_message_log(void*);
 
-BOOL enable_buy_land(void*);
+bool enable_buy_land(void*);
 
 // Help menu
 
@@ -333,13 +336,13 @@ void handle_dump_attachments(void *);
 void handle_dump_avatar_local_textures(void*);
 void handle_debug_avatar_textures(void*);
 void handle_grab_baked_texture(void*);
-BOOL enable_grab_baked_texture(void*);
+bool enable_grab_baked_texture(void*);
 void handle_dump_region_object_cache(void*);
 void handle_reset_interest_lists(void *);
 
-BOOL enable_save_into_task_inventory(void*);
+bool enable_save_into_task_inventory(void*);
 
-BOOL enable_detach(const LLSD& = LLSD());
+bool enable_detach(const LLSD& = LLSD());
 void menu_toggle_attached_lights(void* user_data);
 void menu_toggle_attached_particles(void* user_data);
 
@@ -379,7 +382,7 @@ void LLMenuParcelObserver::changed()
         child = gMenuLand->findChild<LLView>("Land Buy");
         if (child)
         {
-            BOOL buyable = enable_buy_land(NULL);
+            bool buyable = enable_buy_land(NULL);
             child->setEnabled(buyable);
         }
     }
@@ -403,7 +406,7 @@ void initialize_menus();
 void set_merchant_SLM_menu()
 {
     // All other cases (new merchant, not merchant, migrated merchant): show the new Marketplace Listings menu and enable the tool
-    gMenuHolder->getChild<LLView>("MarketplaceListings")->setVisible(TRUE);
+    gMenuHolder->getChild<LLView>("MarketplaceListings")->setVisible(true);
     LLCommand* command = LLCommandManager::instance().getCommand("marketplacelistings");
     gToolBarView->enableCommand(command->id(), true);
 
@@ -428,7 +431,7 @@ void check_merchant_status(bool force)
         LLMarketplaceData::instance().setSLMStatus(MarketplaceStatusCodes::MARKET_PLACE_NOT_INITIALIZED);
     }
     // Hide SLM related menu item
-    gMenuHolder->getChild<LLView>("MarketplaceListings")->setVisible(FALSE);
+    gMenuHolder->getChild<LLView>("MarketplaceListings")->setVisible(false);
 
     // Also disable the toolbar button for Marketplace Listings
     LLCommand* command = LLCommandManager::instance().getCommand("marketplacelistings");
@@ -535,17 +538,17 @@ void init_menus()
     gMenuHolder->childSetLabelArg("Upload Sound", "[COST]", sound_upload_cost_str);
     gMenuHolder->childSetLabelArg("Upload Animation", "[COST]", animation_upload_cost_str);
 
-    gAttachSubMenu = gMenuBarView->findChildMenuByName("Attach Object", TRUE);
-    gDetachSubMenu = gMenuBarView->findChildMenuByName("Detach Object", TRUE);
+    gAttachSubMenu = gMenuBarView->findChildMenuByName("Attach Object", true);
+    gDetachSubMenu = gMenuBarView->findChildMenuByName("Detach Object", true);
 
     gDetachAvatarMenu = gMenuHolder->getChild<LLMenuGL>("Avatar Detach", true);
     gDetachHUDAvatarMenu = gMenuHolder->getChild<LLMenuGL>("Avatar Detach HUD", true);
 
     // Don't display the Memory console menu if the feature is turned off
-    LLMenuItemCheckGL *memoryMenu = gMenuBarView->getChild<LLMenuItemCheckGL>("Memory", TRUE);
+    LLMenuItemCheckGL *memoryMenu = gMenuBarView->getChild<LLMenuItemCheckGL>("Memory", true);
     if (memoryMenu)
     {
-        memoryMenu->setVisible(FALSE);
+        memoryMenu->setVisible(false);
     }
 
     gMenuBarView->createJumpKeys();
@@ -640,7 +643,7 @@ class LLAdvancedDumpInfoToConsole : public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
-        gDebugView->mDebugConsolep->setVisible(TRUE);
+        gDebugView->mDebugConsolep->setVisible(true);
         std::string info_type = userdata.asString();
         if ("region" == info_type)
         {
@@ -957,7 +960,7 @@ class LLAdvancedSetDisplayTextureDensity : public view_listener_t
         std::string mode = userdata.asString();
         if (mode == "none")
         {
-            if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY) == TRUE)
+            if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY))
             {
                 gPipeline.toggleRenderDebug(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY);
             }
@@ -965,7 +968,7 @@ class LLAdvancedSetDisplayTextureDensity : public view_listener_t
         }
         else if (mode == "current")
         {
-            if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY) == FALSE)
+            if (!gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY))
             {
                 gPipeline.toggleRenderDebug(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY);
             }
@@ -973,7 +976,7 @@ class LLAdvancedSetDisplayTextureDensity : public view_listener_t
         }
         else if (mode == "desired")
         {
-            if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY) == FALSE)
+            if (!gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY))
             {
                 gPipeline.toggleRenderDebug(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY);
             }
@@ -982,7 +985,7 @@ class LLAdvancedSetDisplayTextureDensity : public view_listener_t
         }
         else if (mode == "full")
         {
-            if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY) == FALSE)
+            if (!gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY))
             {
                 gPipeline.toggleRenderDebug(LLPipeline::RENDER_DEBUG_TEXEL_DENSITY);
             }
@@ -1288,13 +1291,13 @@ public:
     bool handleEvent(const LLSD &userdata)
     {
         // Toggle the mode - regions will get updated
-        if (gAgent.getInterestListMode() == LLViewerRegion::IL_MODE_360)
+        if (gAgent.getInterestListMode() == IL_MODE_360)
         {
-            gAgent.changeInterestListMode(LLViewerRegion::IL_MODE_DEFAULT);
+            gAgent.changeInterestListMode(IL_MODE_DEFAULT);
         }
         else
         {
-            gAgent.changeInterestListMode(LLViewerRegion::IL_MODE_360);
+            gAgent.changeInterestListMode(IL_MODE_360);
         }
         return true;
     }
@@ -1304,7 +1307,7 @@ class LLAdvancedCheckInterestList360Mode : public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
-        return (gAgent.getInterestListMode() == LLViewerRegion::IL_MODE_360);
+        return (gAgent.getInterestListMode() == IL_MODE_360);
     }
 };
 
@@ -3021,7 +3024,7 @@ class LLObjectBuild : public view_listener_t
         if (gAgentCamera.getFocusOnAvatar() && !LLToolMgr::getInstance()->inEdit() && gSavedSettings.getBOOL("EditCameraMovement") )
         {
             // zoom in if we're looking at the avatar
-            gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+            gAgentCamera.setFocusOnAvatar(false, ANIMATE);
             gAgentCamera.setFocusGlobal(LLToolPie::getInstance()->getPick());
             gAgentCamera.cameraZoomIn(0.666f);
             gAgentCamera.cameraOrbitOver( 30.f * DEG_TO_RAD );
@@ -3056,11 +3059,11 @@ void update_camera()
             // always freeze camera in space, even if camera doesn't move
             // so, for example, follow cam scripts can't affect you when in build mode
             gAgentCamera.setFocusGlobal(gAgentCamera.calcFocusPositionTargetGlobal(), LLUUID::null);
-            gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+            gAgentCamera.setFocusOnAvatar(false, ANIMATE);
         }
         else
         {
-            gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+            gAgentCamera.setFocusOnAvatar(false, ANIMATE);
             LLViewerObject* selected_objectp = selection->getFirstRootObject();
             if (selected_objectp)
             {
@@ -3137,7 +3140,7 @@ void handle_attachment_touch(const LLUUID& inv_item_id)
                 {
                     bool apply(LLSelectNode* node)
                     {
-                        node->setTransient(TRUE);
+                        node->setTransient(true);
                         return true;
                     }
                 } f;
@@ -3186,7 +3189,7 @@ class LLLandBuild : public view_listener_t
         if (gAgentCamera.getFocusOnAvatar() && !LLToolMgr::getInstance()->inEdit() && gSavedSettings.getBOOL("EditCameraMovement") )
         {
             // zoom in if we're looking at the avatar
-            gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+            gAgentCamera.setFocusOnAvatar(false, ANIMATE);
             gAgentCamera.setFocusGlobal(LLToolPie::getInstance()->getPick());
             gAgentCamera.cameraZoomIn(0.666f);
             gAgentCamera.cameraOrbitOver( 30.f * DEG_TO_RAD );
@@ -3213,7 +3216,7 @@ class LLLandBuyPass : public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
-        LLPanelLandGeneral::onClickBuyPass((void *)FALSE);
+        LLPanelLandGeneral::onClickBuyPass((void *)false);
         return true;
     }
 };
@@ -3228,12 +3231,12 @@ class LLLandEnableBuyPass : public view_listener_t
 };
 
 // BUG: Should really check if CLICK POINT is in a parcel where you can build.
-BOOL enable_land_build(void*)
+bool enable_land_build(void*)
 {
-    if (gAgent.isGodlike()) return TRUE;
-    if (gAgent.inPrelude()) return FALSE;
+    if (gAgent.isGodlike()) return true;
+    if (gAgent.inPrelude()) return false;
 
-    BOOL can_build = FALSE;
+    bool can_build = false;
     LLParcel* agent_parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
     if (agent_parcel)
     {
@@ -3243,12 +3246,12 @@ BOOL enable_land_build(void*)
 }
 
 // BUG: Should really check if OBJECT is in a parcel where you can build.
-BOOL enable_object_build(void*)
+bool enable_object_build(void*)
 {
-    if (gAgent.isGodlike()) return TRUE;
-    if (gAgent.inPrelude()) return FALSE;
+    if (gAgent.isGodlike()) return true;
+    if (gAgent.inPrelude()) return false;
 
-    BOOL can_build = FALSE;
+    bool can_build = false;
     LLParcel* agent_parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
     if (agent_parcel)
     {
@@ -3317,6 +3320,40 @@ bool enable_os_exception()
 #endif
 }
 
+
+bool enable_gltf()
+{
+    static LLCachedControl<bool> enablegltf(gSavedSettings, "GLTFEnabled", false);
+    return enablegltf;
+}
+
+bool enable_gltf_save_as()
+{
+    if (enable_gltf())
+    {
+        LLViewerObject* obj = LLSelectMgr::getInstance()->getSelection()->getFirstRootObject();
+        if (obj)
+        {
+            if (obj->mGLTFAsset && obj->mGLTFAsset->isLocalPreview())
+            {
+                return true;
+            }
+
+            LLPermissions* permissions = LLSelectMgr::getInstance()->findObjectPermissions(obj);
+            if (permissions)
+            {
+                return permissions->allowExportBy(gAgent.getID());
+            }
+        }
+    }
+    return false;
+}
+
+bool enable_gltf_upload()
+{
+    return enable_gltf_save_as();
+}
+
 class LLSelfRemoveAllAttachments : public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
@@ -3349,10 +3386,10 @@ class LLSelfEnableRemoveAllAttachments : public view_listener_t
     }
 };
 
-BOOL enable_has_attachments(void*)
+bool enable_has_attachments(void*)
 {
 
-    return FALSE;
+    return false;
 }
 
 //---------------------------------------------------------------------------
@@ -3489,7 +3526,7 @@ class LLObjectMute : public view_listener_t
         LLVOAvatar* avatar = find_avatar_from_object(object);
         if (avatar)
         {
-            avatar->mNeedsImpostorUpdate = TRUE;
+            avatar->mNeedsImpostorUpdate = true;
             avatar->mLastImpostorUpdateReason = 9;
 
             id = avatar->getID();
@@ -3556,7 +3593,7 @@ bool handle_go_to()
     else
     {
         // Snap camera back to behind avatar
-        gAgentCamera.setFocusOnAvatar(TRUE, ANIMATE);
+        gAgentCamera.setFocusOnAvatar(true, ANIMATE);
     }
 
     // Could be first use
@@ -3931,7 +3968,7 @@ void handle_buy_object(LLSaleInfo sale_info)
 
     LLUUID owner_id;
     std::string owner_name;
-    BOOL owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, owner_name);
+    bool owners_identical = LLSelectMgr::getInstance()->selectGetOwner(owner_id, owner_name);
     if (!owners_identical)
     {
         LLNotificationsUtil::add("CannotBuyObjectsFromDifferentOwners");
@@ -3939,7 +3976,7 @@ void handle_buy_object(LLSaleInfo sale_info)
     }
 
     LLPermissions perm;
-    BOOL valid = LLSelectMgr::getInstance()->selectGetPermissions(perm);
+    bool valid = LLSelectMgr::getInstance()->selectGetPermissions(perm);
     LLAggregatePermissions ag_perm;
     valid &= LLSelectMgr::getInstance()->selectGetAggregatePermissions(ag_perm);
     if(!valid || !sale_info.isForSale() || !perm.allowTransferTo(gAgent.getID()))
@@ -4155,7 +4192,7 @@ class LLTogglePanelPeopleTab : public view_listener_t
     }
 };
 
-BOOL check_admin_override(void*)
+bool check_admin_override(void*)
 {
     return gAgent.getAdminOverride();
 }
@@ -4255,7 +4292,7 @@ void handle_toggle_hacked_godmode(void*)
     set_god_level(gHackGodmode ? GOD_MAINTENANCE : GOD_NOT);
 }
 
-BOOL check_toggle_hacked_godmode(void*)
+bool check_toggle_hacked_godmode(void*)
 {
     return gHackGodmode;
 }
@@ -4292,15 +4329,15 @@ public:
     virtual ~LLHaveCallingcard() {}
     virtual bool operator()(LLInventoryCategory* cat,
                             LLInventoryItem* item);
-    BOOL isThere() const { return mIsThere;}
+    bool isThere() const { return mIsThere;}
 protected:
     LLUUID mID;
-    BOOL mIsThere;
+    bool mIsThere;
 };
 
 LLHaveCallingcard::LLHaveCallingcard(const LLUUID& agent_id) :
     mID(agent_id),
-    mIsThere(FALSE)
+    mIsThere(false)
 {
 }
 
@@ -4312,14 +4349,14 @@ bool LLHaveCallingcard::operator()(LLInventoryCategory* cat,
         if((item->getType() == LLAssetType::AT_CALLINGCARD)
            && (item->getCreatorUUID() == mID))
         {
-            mIsThere = TRUE;
+            mIsThere = true;
         }
     }
-    return FALSE;
+    return false;
 }
 */
 
-BOOL is_agent_mappable(const LLUUID& agent_id)
+bool is_agent_mappable(const LLUUID& agent_id)
 {
     const LLRelationship* buddy_info = NULL;
     bool is_friend = LLAvatarActions::isFriend(agent_id);
@@ -4400,7 +4437,7 @@ class LLEnableEditPhysics : public view_listener_t
     bool handleEvent(const LLSD& userdata)
     {
         //return gAgentWearables.isWearableModifiable(LLWearableType::WT_SHAPE, 0);
-        return TRUE;
+        return true;
     }
 };
 
@@ -4468,11 +4505,11 @@ void handle_object_sit(const LLUUID& object_id)
     handle_object_sit(obj, offset);
 }
 
-void near_sit_down_point(BOOL success, void *)
+void near_sit_down_point(bool success, void *)
 {
     if (success)
     {
-        gAgent.setFlying(FALSE);
+        gAgent.setFlying(false);
         gAgent.clearControlFlags(AGENT_CONTROL_STAND_UP); // might have been set by autopilot
         gAgent.setControlFlags(AGENT_CONTROL_SIT_ON_GROUND);
     }
@@ -4518,7 +4555,7 @@ class LLLandCanSit : public view_listener_t
 //
 // Major mode switching
 //
-void reset_view_final( BOOL proceed );
+void reset_view_final( bool proceed );
 
 void handle_reset_view()
 {
@@ -4527,8 +4564,8 @@ void handle_reset_view()
         // switching to outfit selector should automagically save any currently edited wearable
         LLFloaterSidePanelContainer::showPanel("appearance", LLSD().with("type", "my_outfits"));
     }
-    gAgentCamera.setFocusOnAvatar(TRUE, FALSE, FALSE);
-    reset_view_final( TRUE );
+    gAgentCamera.setFocusOnAvatar(true, false, false);
+    reset_view_final( true );
     LLFloaterCamera::resetCameraMode();
 }
 
@@ -4542,14 +4579,14 @@ class LLViewResetView : public view_listener_t
 };
 
 // Note: extra parameters allow this function to be called from dialog.
-void reset_view_final( BOOL proceed )
+void reset_view_final( bool proceed )
 {
     if( !proceed )
     {
         return;
     }
 
-    gAgentCamera.resetView(TRUE, TRUE);
+    gAgentCamera.resetView(true, true);
     gAgentCamera.setLookAt(LOOKAT_TARGET_CLEAR);
 }
 
@@ -4583,7 +4620,7 @@ class LLViewDefaultUISize : public view_listener_t
     bool handleEvent(const LLSD& userdata)
     {
         gSavedSettings.setF32("UIScaleFactor", 1.0f);
-        gSavedSettings.setBOOL("UIAutoScale", FALSE);
+        gSavedSettings.setBOOL("UIAutoScale", false);
         gViewerWindow->reshape(gViewerWindow->getWindowWidthRaw(), gViewerWindow->getWindowHeightRaw());
         return true;
     }
@@ -4635,7 +4672,7 @@ void handle_duplicate_in_place(void*)
     LL_INFOS() << "handle_duplicate_in_place" << LL_ENDL;
 
     LLVector3 offset(0.f, 0.f, 0.f);
-    LLSelectMgr::getInstance()->selectDuplicate(offset, TRUE);
+    LLSelectMgr::getInstance()->selectDuplicate(offset, true);
 }
 
 
@@ -4683,8 +4720,8 @@ void handle_object_owner_permissive(void*)
     if(gAgent.isGodlike())
     {
         // do the objects.
-        LLSelectMgr::getInstance()->selectionSetObjectPermissions(PERM_BASE, TRUE, PERM_ALL, TRUE);
-        LLSelectMgr::getInstance()->selectionSetObjectPermissions(PERM_OWNER, TRUE, PERM_ALL, TRUE);
+        LLSelectMgr::getInstance()->selectionSetObjectPermissions(PERM_BASE, true, PERM_ALL, true);
+        LLSelectMgr::getInstance()->selectionSetObjectPermissions(PERM_OWNER, true, PERM_ALL, true);
     }
 }
 
@@ -4693,14 +4730,14 @@ void handle_object_owner_self(void*)
     // only send this if they're a god.
     if(gAgent.isGodlike())
     {
-        LLSelectMgr::getInstance()->sendOwner(gAgent.getID(), gAgent.getGroupID(), TRUE);
+        LLSelectMgr::getInstance()->sendOwner(gAgent.getID(), gAgent.getGroupID(), true);
     }
 }
 
 // Shortcut to set owner permissions to not editable.
 void handle_object_lock(void*)
 {
-    LLSelectMgr::getInstance()->selectionSetObjectPermissions(PERM_OWNER, FALSE, PERM_MODIFY);
+    LLSelectMgr::getInstance()->selectionSetObjectPermissions(PERM_OWNER, false, PERM_MODIFY);
 }
 
 void handle_object_asset_ids(void*)
@@ -4825,11 +4862,11 @@ static bool get_derezzable_objects(
             LL_WARNS() << "Attempt to derez deprecated AssetContainer object type not supported." << LL_ENDL;
             /*
             object->requestInventory(container_inventory_arrived,
-                (void *)(BOOL)(DRD_TAKE_INTO_AGENT_INVENTORY == dest));
+                (void *)(bool)(DRD_TAKE_INTO_AGENT_INVENTORY == dest));
             */
             continue;
         }
-        BOOL can_derez_current = FALSE;
+        bool can_derez_current = false;
         switch(dest)
         {
         case DRD_TAKE_INTO_AGENT_INVENTORY:
@@ -4838,14 +4875,14 @@ static bool get_derezzable_objects(
                 ((node->mPermissions->allowTransferTo(gAgent.getID()) && object->permModify())
                 || (node->allowOperationOnNode(PERM_OWNER, GP_OBJECT_MANIPULATE))))
             {
-                can_derez_current = TRUE;
+                can_derez_current = true;
             }
             break;
 
         case DRD_RETURN_TO_OWNER:
             if(!object->isAttachment())
             {
-                can_derez_current = TRUE;
+                can_derez_current = true;
             }
             break;
 
@@ -4854,7 +4891,7 @@ static bool get_derezzable_objects(
                 && object->permCopy())
                || gAgent.isGodlike())
             {
-                can_derez_current = TRUE;
+                can_derez_current = true;
             }
             break;
         }
@@ -4955,7 +4992,7 @@ static void derez_objects(
                 msg->nextBlockFast(_PREHASH_ObjectData);
                 msg->addU32Fast(_PREHASH_ObjectLocalID, object->getLocalID());
                 // VEFFECT: DerezObject
-                LLHUDEffectSpiral* effectp = (LLHUDEffectSpiral*)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, TRUE);
+                LLHUDEffectSpiral* effectp = (LLHUDEffectSpiral*)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, true);
                 effectp->setPositionGlobal(object->getPositionGlobal());
                 effectp->setColor(LLColor4U(gAgent.getEffectColor()));
             }
@@ -4983,6 +5020,24 @@ static void derez_objects(EDeRezDestination dest, const LLUUID& dest_id)
     derez_objects(dest, dest_id, first_region, error, NULL);
 }
 
+static void derez_objects_separate(EDeRezDestination dest, const LLUUID &dest_id)
+{
+    std::vector<LLViewerObjectPtr> derez_object_list;
+    std::string error;
+    LLViewerRegion* first_region = NULL;
+    if (!get_derezzable_objects(dest, error, first_region, &derez_object_list, false))
+    {
+        LL_WARNS() << "No objects to derez" << LL_ENDL;
+        return;
+    }
+    for (LLViewerObject *opjectp : derez_object_list)
+    {
+        std::vector<LLViewerObjectPtr> buf_list;
+        buf_list.push_back(opjectp);
+        derez_objects(dest, dest_id, first_region, error, &buf_list);
+    }
+}
+
 void handle_take_copy()
 {
     if (LLSelectMgr::getInstance()->getSelection()->isEmpty()) return;
@@ -4991,6 +5046,15 @@ void handle_take_copy()
     derez_objects(DRD_ACQUIRE_TO_AGENT_INVENTORY, category_id);
 }
 
+void handle_take_separate_copy()
+{
+    if (LLSelectMgr::getInstance()->getSelection()->isEmpty())
+        return;
+
+    const LLUUID category_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_OBJECT);
+    derez_objects_separate(DRD_ACQUIRE_TO_AGENT_INVENTORY, category_id);
+}
+
 void handle_link_objects()
 {
     if (LLSelectMgr::getInstance()->getSelection()->isEmpty())
@@ -5084,7 +5148,7 @@ void force_take_copy(void*)
     derez_objects(DRD_FORCE_TO_GOD_INVENTORY, category_id);
 }
 
-void handle_take()
+void handle_take(bool take_separate)
 {
     // we want to use the folder this was derezzed from if it's
     // available. Otherwise, derez to the normal place.
@@ -5093,8 +5157,8 @@ void handle_take()
         return;
     }
 
-    BOOL you_own_everything = TRUE;
-    BOOL locked_but_takeable_object = FALSE;
+    bool you_own_everything = true;
+    bool locked_but_takeable_object = false;
     LLUUID category_id;
 
     for (LLObjectSelection::root_iterator iter = LLSelectMgr::getInstance()->getSelection()->root_begin();
@@ -5106,12 +5170,12 @@ void handle_take()
         {
             if(!object->permYouOwner())
             {
-                you_own_everything = FALSE;
+                you_own_everything = false;
             }
 
             if(!object->permMove())
             {
-                locked_but_takeable_object = TRUE;
+                locked_but_takeable_object = true;
             }
         }
         if(node->mFolderID.notNull())
@@ -5173,7 +5237,17 @@ void handle_take()
     // MAINT-290
     // Reason: Showing the confirmation dialog resets object selection, thus there is nothing to derez.
     // Fix: pass selection to the confirm_take, so that selection doesn't "die" after confirmation dialog is opened
-    params.functor.function(boost::bind(confirm_take, _1, _2, LLSelectMgr::instance().getSelection()));
+    params.functor.function([take_separate](const LLSD &notification, const LLSD &response)
+    {
+        if (take_separate)
+        {
+            confirm_take_separate(notification, response, LLSelectMgr::instance().getSelection());
+        }
+        else
+        {
+            confirm_take(notification, response, LLSelectMgr::instance().getSelection());
+        }
+    });
 
     if(locked_but_takeable_object ||
        !you_own_everything)
@@ -5202,7 +5276,7 @@ void handle_take()
 void handle_object_show_inspector()
 {
     LLObjectSelectionHandle selection = LLSelectMgr::getInstance()->getSelection();
-    LLViewerObject* objectp = selection->getFirstRootObject(TRUE);
+    LLViewerObject* objectp = selection->getFirstRootObject(true);
     if (!objectp)
     {
         return;
@@ -5236,14 +5310,24 @@ bool confirm_take(const LLSD& notification, const LLSD& response, LLObjectSelect
     return false;
 }
 
+bool confirm_take_separate(const LLSD &notification, const LLSD &response, LLObjectSelectionHandle selection_handle)
+{
+    S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
+    if (enable_take() && (option == 0))
+    {
+        derez_objects_separate(DRD_TAKE_INTO_AGENT_INVENTORY, notification["payload"]["folder_id"].asUUID());
+    }
+    return false;
+}
+
 // You can take an item when it is public and transferrable, or when
 // you own it. We err on the side of enabling the item when at least
 // one item selected can be copied to inventory.
-BOOL enable_take()
+bool enable_take()
 {
     if (sitting_on_selection())
     {
-        return FALSE;
+        return false;
     }
 
     for (LLObjectSelection::valid_root_iterator iter = LLSelectMgr::getInstance()->getSelection()->valid_root_begin();
@@ -5258,13 +5342,13 @@ BOOL enable_take()
         }
 
 #ifdef HACKED_GODLIKE_VIEWER
-        return TRUE;
+        return true;
 #else
 # ifdef TOGGLE_HACKED_GODLIKE_VIEWER
         if (!LLGridManager::getInstance()->isInProductionGrid()
             && gAgent.isGodlike())
         {
-            return TRUE;
+            return true;
         }
 # endif
         if(!object->isPermanentEnforced() &&
@@ -5276,7 +5360,7 @@ BOOL enable_take()
         }
 #endif
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -5318,6 +5402,21 @@ bool visible_take_object()
     return !is_selection_buy_not_take() && enable_take();
 }
 
+bool is_multiple_selection()
+{
+    return (LLSelectMgr::getInstance()->getSelection()->getRootObjectCount() > 1);
+}
+
+bool is_single_selection()
+{
+    return !is_multiple_selection();
+}
+
+bool enable_take_objects()
+{
+    return visible_take_object() && is_multiple_selection();
+}
+
 bool tools_visible_buy_object()
 {
     return is_selection_buy_not_take();
@@ -5352,9 +5451,9 @@ class LLToolsEnableBuyOrTake : public view_listener_t
 // exception is if you own everything in the selection that is for
 // sale, in this case, you can't buy stuff from yourself, so you can
 // take it.
-// return value = TRUE if selection is a 'buy'.
-//                FALSE if selection is a 'take'
-BOOL is_selection_buy_not_take()
+// return value = true if selection is a 'buy'.
+//                false if selection is a 'take'
+bool is_selection_buy_not_take()
 {
     for (LLObjectSelection::root_iterator iter = LLSelectMgr::getInstance()->getSelection()->root_begin();
          iter != LLSelectMgr::getInstance()->getSelection()->root_end(); iter++)
@@ -5365,10 +5464,10 @@ BOOL is_selection_buy_not_take()
         {
             // you do not own the object and it is for sale, thus,
             // it's a buy
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 S32 selection_price()
@@ -5426,7 +5525,7 @@ void handle_buy()
     if (LLSelectMgr::getInstance()->getSelection()->isEmpty()) return;
 
     LLSaleInfo sale_info;
-    BOOL valid = LLSelectMgr::getInstance()->selectGetSaleInfo(sale_info);
+    bool valid = LLSelectMgr::getInstance()->selectGetSaleInfo(sale_info);
     if (!valid) return;
 
     S32 price = sale_info.getSalePrice();
@@ -5464,27 +5563,27 @@ bool for_sale_selection(LLSelectNode* nodep)
             || nodep->mSaleInfo.getSaleType() != LLSaleInfo::FS_COPY);
 }
 
-BOOL sitting_on_selection()
+bool sitting_on_selection()
 {
     LLSelectNode* node = LLSelectMgr::getInstance()->getSelection()->getFirstRootNode();
     if (!node)
     {
-        return FALSE;
+        return false;
     }
 
     if (!node->mValid)
     {
-        return FALSE;
+        return false;
     }
 
     LLViewerObject* root_object = node->getObject();
     if (!root_object)
     {
-        return FALSE;
+        return false;
     }
 
     // Need to determine if avatar is sitting on this object
-    if (!isAgentAvatarValid()) return FALSE;
+    if (!isAgentAvatarValid()) return false;
 
     return (gAgentAvatarp->isSitting() && gAgentAvatarp->getRoot() == root_object);
 }
@@ -5587,7 +5686,7 @@ class LLToolsSnapObjectXY : public view_listener_t
                     pos_global.mdV[VY] += snap_size;
                 }
 
-                obj->setPositionGlobal(pos_global, FALSE);
+                obj->setPositionGlobal(pos_global, false);
             }
         }
         LLSelectMgr::getInstance()->sendMultipleUpdate(UPD_POSITION);
@@ -5968,7 +6067,7 @@ bool enable_object_delete()
 {
     bool new_value =
 #ifdef HACKED_GODLIKE_VIEWER
-    TRUE;
+    true;
 #else
 # ifdef TOGGLE_HACKED_GODLIKE_VIEWER
     (!LLGridManager::getInstance()->isInProductionGrid()
@@ -6180,8 +6279,8 @@ void show_debug_menus()
     // this might get called at login screen where there is no menu so only toggle it if one exists
     if ( gMenuBarView )
     {
-        BOOL debug = gSavedSettings.getBOOL("UseDebugMenus");
-        BOOL qamode = gSavedSettings.getBOOL("QAMode");
+        bool debug = gSavedSettings.getBOOL("UseDebugMenus");
+        bool qamode = gSavedSettings.getBOOL("QAMode");
 
         gMenuBarView->setItemVisible("Advanced", debug);
 //      gMenuBarView->setItemEnabled("Advanced", debug); // Don't disable Advanced keyboard shortcuts when hidden
@@ -6199,7 +6298,7 @@ void show_debug_menus()
     }
     if (gLoginMenuBarView)
     {
-        BOOL debug = gSavedSettings.getBOOL("UseDebugMenus");
+        bool debug = gSavedSettings.getBOOL("UseDebugMenus");
         gLoginMenuBarView->setItemVisible("Debug", debug);
         gLoginMenuBarView->setItemEnabled("Debug", debug);
     }
@@ -6207,7 +6306,7 @@ void show_debug_menus()
 
 void toggle_debug_menus(void*)
 {
-    BOOL visible = ! gSavedSettings.getBOOL("UseDebugMenus");
+    bool visible = ! gSavedSettings.getBOOL("UseDebugMenus");
     gSavedSettings.setBOOL("UseDebugMenus", visible);
     show_debug_menus();
 }
@@ -6394,10 +6493,10 @@ class LLWorldPlaceProfile : public view_listener_t
 void handle_look_at_selection(const LLSD& param)
 {
     const F32 PADDING_FACTOR = 1.75f;
-    BOOL zoom = (param.asString() == "zoom");
+    bool zoom = (param.asString() == "zoom");
     if (!LLSelectMgr::getInstance()->getSelection()->isEmpty())
     {
-        gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+        gAgentCamera.setFocusOnAvatar(false, ANIMATE);
 
         LLBBox selection_bbox = LLSelectMgr::getInstance()->getBBoxOfSelection();
         F32 angle_of_view = llmax(0.1f, LLViewerCamera::getInstance()->getAspect() > 1.f ? LLViewerCamera::getInstance()->getView() * LLViewerCamera::getInstance()->getAspect() : LLViewerCamera::getInstance()->getView());
@@ -6437,7 +6536,7 @@ void handle_zoom_to_object(LLUUID object_id)
 
     if (object)
     {
-        gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+        gAgentCamera.setFocusOnAvatar(false, ANIMATE);
 
         LLBBox bbox = object->getBoundingBoxAgent() ;
         F32 angle_of_view = llmax(0.1f, LLViewerCamera::getInstance()->getAspect() > 1.f ? LLViewerCamera::getInstance()->getView() * LLViewerCamera::getInstance()->getAspect() : LLViewerCamera::getInstance()->getView());
@@ -6509,8 +6608,8 @@ class LLAvatarToggleMyProfile : public view_listener_t
         LLFloater* instance = LLAvatarActions::getProfileFloater(gAgent.getID());
         if (LLFloater::isMinimized(instance))
         {
-            instance->setMinimized(FALSE);
-            instance->setFocus(TRUE);
+            instance->setMinimized(false);
+            instance->setFocus(true);
         }
         else if (!LLFloater::isShown(instance))
         {
@@ -6518,7 +6617,7 @@ class LLAvatarToggleMyProfile : public view_listener_t
         }
         else if (!instance->hasFocus() && !instance->getIsChrome())
         {
-            instance->setFocus(TRUE);
+            instance->setFocus(true);
         }
         else
         {
@@ -6535,8 +6634,8 @@ class LLAvatarTogglePicks : public view_listener_t
         LLFloater * instance = LLAvatarActions::getProfileFloater(gAgent.getID());
         if (LLFloater::isMinimized(instance) || (instance && !instance->hasFocus() && !instance->getIsChrome()))
         {
-            instance->setMinimized(FALSE);
-            instance->setFocus(TRUE);
+            instance->setMinimized(false);
+            instance->setFocus(true);
             LLAvatarActions::showPicks(gAgent.getID());
         }
         else if (picks_tab_visible())
@@ -6558,8 +6657,8 @@ class LLAvatarToggleSearch : public view_listener_t
         LLFloater* instance = LLFloaterReg::findInstance("search");
         if (LLFloater::isMinimized(instance))
         {
-            instance->setMinimized(FALSE);
-            instance->setFocus(TRUE);
+            instance->setMinimized(false);
+            instance->setFocus(true);
         }
         else if (!LLFloater::isShown(instance))
         {
@@ -6567,7 +6666,7 @@ class LLAvatarToggleSearch : public view_listener_t
         }
         else if (!instance->hasFocus() && !instance->getIsChrome())
         {
-            instance->setFocus(TRUE);
+            instance->setFocus(true);
         }
         else
         {
@@ -7080,7 +7179,7 @@ class LLLandEdit : public view_listener_t
         if (gAgentCamera.getFocusOnAvatar() && gSavedSettings.getBOOL("EditCameraMovement") )
         {
             // zoom in if we're looking at the avatar
-            gAgentCamera.setFocusOnAvatar(FALSE, ANIMATE);
+            gAgentCamera.setFocusOnAvatar(false, ANIMATE);
             gAgentCamera.setFocusGlobal(LLToolPie::getInstance()->getPick());
 
             gAgentCamera.cameraOrbitOver( F_PI * 0.25f );
@@ -7143,7 +7242,7 @@ class LLWorldEnableBuyLand : public view_listener_t
     }
 };
 
-BOOL enable_buy_land(void*)
+bool enable_buy_land(void*)
 {
     return LLViewerParcelMgr::getInstance()->canAgentBuyParcel(
                 LLViewerParcelMgr::getInstance()->getParcelSelection()->getParcel(), false);
@@ -7181,7 +7280,7 @@ private:
         return true;
     }
 
-    static void onNearAttachObject(BOOL success, void *user_data);
+    static void onNearAttachObject(bool success, void *user_data);
     void confirmReplaceAttachment(S32 option, LLViewerJointAttachment* attachment_point);
     class CallbackData : public LLSelectionCallbackData
     {
@@ -7200,7 +7299,7 @@ protected:
 LLObjectSelectionHandle LLObjectAttachToAvatar::sObjectSelection;
 
 // static
-void LLObjectAttachToAvatar::onNearAttachObject(BOOL success, void *user_data)
+void LLObjectAttachToAvatar::onNearAttachObject(bool success, void *user_data)
 {
     if (!user_data) return;
     CallbackData* cb_data = static_cast<CallbackData*>(user_data);
@@ -7425,21 +7524,21 @@ class LLAttachmentDetach : public view_listener_t
                 }
 
                 LLViewerObject* parent = (LLViewerObject*)objectp->getParent();
-                while (parent)
-                {
-                    if (parent->isAvatar())
-                    {
-                        break;
-                    }
+        while (parent)
+        {
+            if(parent->isAvatar())
+            {
+                break;
+            }
                     objectp = parent;
-                    parent = (LLViewerObject*)parent->getParent();
-                }
+            parent = (LLViewerObject*)parent->getParent();
+        }
 
                 // std::set to avoid dupplicate 'roots' from linksets
                 mRemoveSet.insert(objectp->getAttachmentItemID());
 
-                return true;
-            }
+            return true;
+        }
             bool mAvatarsInSelection;
             uuid_set_t mRemoveSet;
         } func;
@@ -7493,7 +7592,7 @@ class LLAttachmentEnableDrop : public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
-        BOOL can_build   = gAgent.isGodlike() || (LLViewerParcelMgr::getInstance()->allowAgentBuild());
+        bool can_build   = gAgent.isGodlike() || (LLViewerParcelMgr::getInstance()->allowAgentBuild());
 
         //Add an inventory observer to only allow dropping the newly attached item
         //once it exists in your inventory.  Look at Jira 2422.
@@ -7545,7 +7644,7 @@ class LLAttachmentEnableDrop : public view_listener_t
     }
 };
 
-BOOL enable_detach(const LLSD&)
+bool enable_detach(const LLSD&)
 {
     LLViewerObject* object = LLSelectMgr::getInstance()->getSelection()->getPrimaryObject();
 
@@ -7554,7 +7653,7 @@ BOOL enable_detach(const LLSD&)
         !object->isAttachment() ||
         !LLSelectMgr::getInstance()->getSelection()->contains(object,SELECT_ALL_TES ))
     {
-        return FALSE;
+        return false;
     }
 
     // Find the avatar who owns this attachment
@@ -7564,13 +7663,13 @@ BOOL enable_detach(const LLSD&)
         // ...if it's you, good to detach
         if (avatar->getID() == gAgent.getID())
         {
-            return TRUE;
+            return true;
         }
 
         avatar = (LLViewerObject*)avatar->getParent();
     }
 
-    return FALSE;
+    return false;
 }
 
 class LLAttachmentEnableDetach : public view_listener_t
@@ -7583,7 +7682,7 @@ class LLAttachmentEnableDetach : public view_listener_t
 };
 
 // Used to tell if the selected object can be attached to your avatar.
-BOOL object_selected_and_point_valid()
+bool object_selected_and_point_valid()
 {
     LLObjectSelectionHandle selection = LLSelectMgr::getInstance()->getSelection();
     for (LLObjectSelection::root_iterator iter = selection->root_begin();
@@ -7598,7 +7697,7 @@ BOOL object_selected_and_point_valid()
             LLViewerObject* child = *iter;
             if (child->isAvatar())
             {
-                return FALSE;
+                return false;
             }
         }
     }
@@ -7613,23 +7712,23 @@ BOOL object_selected_and_point_valid()
 }
 
 
-BOOL object_is_wearable()
+bool object_is_wearable()
 {
     if (!isAgentAvatarValid())
     {
-        return FALSE;
+        return false;
     }
     if (!object_selected_and_point_valid())
     {
-        return FALSE;
+        return false;
     }
     if (sitting_on_selection())
     {
-        return FALSE;
+        return false;
     }
     if (!gAgentAvatarp->canAttachMoreObjects())
     {
-        return FALSE;
+        return false;
     }
     LLObjectSelectionHandle selection = LLSelectMgr::getInstance()->getSelection();
     for (LLObjectSelection::valid_root_iterator iter = LLSelectMgr::getInstance()->getSelection()->valid_root_begin();
@@ -7638,10 +7737,10 @@ BOOL object_is_wearable()
         LLSelectNode* node = *iter;
         if (node->mPermissions->getOwner() == gAgent.getID())
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -7689,10 +7788,10 @@ namespace
 {
     struct QueueObjects : public LLSelectedNodeFunctor
     {
-        BOOL scripted;
-        BOOL modifiable;
+        bool scripted;
+        bool modifiable;
         LLFloaterScriptQueue* mQueue;
-        QueueObjects(LLFloaterScriptQueue* q) : mQueue(q), scripted(FALSE), modifiable(FALSE) {}
+        QueueObjects(LLFloaterScriptQueue* q) : mQueue(q), scripted(false), modifiable(false) {}
         virtual bool apply(LLSelectNode* node)
         {
             LLViewerObject* obj = node->getObject();
@@ -7899,13 +7998,13 @@ void handle_selected_material_info()
 void handle_test_male(void*)
 {
     LLAppearanceMgr::instance().wearOutfitByName("Male Shape & Outfit");
-    //gGestureList.requestResetFromServer( TRUE );
+    //gGestureList.requestResetFromServer( true );
 }
 
 void handle_test_female(void*)
 {
     LLAppearanceMgr::instance().wearOutfitByName("Female Shape & Outfit");
-    //gGestureList.requestResetFromServer( FALSE );
+    //gGestureList.requestResetFromServer( false );
 }
 
 void handle_dump_attachments(void*)
@@ -7923,7 +8022,7 @@ void handle_dump_attachments(void*)
              ++attachment_iter)
         {
             LLViewerObject *attached_object = attachment_iter->get();
-            BOOL visible = (attached_object != NULL &&
+            bool visible = (attached_object != NULL &&
                             attached_object->mDrawable.notNull() &&
                             !attached_object->mDrawable->isRenderType(0));
             LLVector3 pos;
@@ -7947,7 +8046,7 @@ protected:
     bool handleEvent(const LLSD& userdata)
     {
         std::string control_name = userdata.asString();
-        BOOL checked = gSavedSettings.getBOOL( control_name );
+        bool checked = gSavedSettings.getBOOL( control_name );
         gSavedSettings.setBOOL( control_name, !checked );
         return true;
     }
@@ -8004,7 +8103,7 @@ class LLAdvancedClickRenderProfile: public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
-        gShaderProfileFrame = TRUE;
+        gShaderProfileFrame = true;
         return true;
     }
 };
@@ -8034,23 +8133,59 @@ class LLAdvancedClickHDRIPreview: public view_listener_t
 };
 
 
-class LLAdvancedClickGLTFScenePreview : public view_listener_t
+class LLAdvancedClickGLTFOpen: public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
-        // open personal lighting floater when previewing an HDRI (keeps HDRI from implicitly unloading when opening build tools)
         LL::GLTFSceneManager::instance().load();
         return true;
     }
 };
 
+class LLAdvancedClickGLTFSaveAs : public view_listener_t
+{
+    bool handleEvent(const LLSD& userdata)
+    {
+        LL::GLTFSceneManager::instance().saveAs();
+        return true;
+    }
+};
+
+class LLAdvancedClickGLTFUpload: public view_listener_t
+{
+    bool handleEvent(const LLSD& userdata)
+    {
+        LL::GLTFSceneManager::instance().uploadSelection();
+        return true;
+    }
+};
+
+class LLAdvancedClickResizeWindow : public view_listener_t
+{
+    bool handleEvent(const LLSD& userdata)
+    {
+        S32 w = 0;
+        S32 h = 0;
+
+        sscanf(userdata.asString().c_str(), "%dx%d", &w, &h);
+
+        if (w > 0 && h > 0)
+        {
+            gViewerWindow->getWindow()->setSize(LLCoordWindow(w, h));
+        }
+
+        return true;
+    }
+};
+
+
 // these are used in the gl menus to set control values that require shader recompilation
 class LLToggleShaderControl : public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
         std::string control_name = userdata.asString();
-        BOOL checked = gSavedSettings.getBOOL( control_name );
+        bool checked = gSavedSettings.getBOOL( control_name );
         gSavedSettings.setBOOL( control_name, !checked );
         LLPipeline::refreshCachedSettings();
         LLViewerShaderMgr::instance()->setShaders();
@@ -8170,19 +8305,23 @@ bool enable_object_take_copy()
     return all_valid;
 }
 
+bool enable_take_copy_objects()
+{
+    return enable_object_take_copy() && is_multiple_selection();
+}
 
 class LLHasAsset : public LLInventoryCollectFunctor
 {
 public:
-    LLHasAsset(const LLUUID& id) : mAssetID(id), mHasAsset(FALSE) {}
+    LLHasAsset(const LLUUID& id) : mAssetID(id), mHasAsset(false) {}
     virtual ~LLHasAsset() {}
     virtual bool operator()(LLInventoryCategory* cat,
                             LLInventoryItem* item);
-    BOOL hasAsset() const { return mHasAsset; }
+    bool hasAsset() const { return mHasAsset; }
 
 protected:
     LLUUID mAssetID;
-    BOOL mHasAsset;
+    bool mHasAsset;
 };
 
 bool LLHasAsset::operator()(LLInventoryCategory* cat,
@@ -8190,13 +8329,13 @@ bool LLHasAsset::operator()(LLInventoryCategory* cat,
 {
     if(item && item->getAssetUUID() == mAssetID)
     {
-        mHasAsset = TRUE;
+        mHasAsset = true;
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL enable_save_into_task_inventory(void*)
+bool enable_save_into_task_inventory(void*)
 {
     LLSelectNode* node = LLSelectMgr::getInstance()->getSelection()->getFirstRootNode();
     if(node && (node->mValid) && (!node->mFromTaskID.isNull()))
@@ -8205,10 +8344,10 @@ BOOL enable_save_into_task_inventory(void*)
         LLViewerObject* obj = node->getObject();
         if( obj && !obj->isAttachment() )
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 class LLToolsEnableSaveToObjectInventory : public view_listener_t
@@ -8278,12 +8417,12 @@ class LLWorldEnableTeleportHome : public view_listener_t
     }
 };
 
-BOOL enable_god_full(void*)
+bool enable_god_full(void*)
 {
     return gAgent.getGodLevel() >= GOD_FULL;
 }
 
-BOOL enable_god_liaison(void*)
+bool enable_god_liaison(void*)
 {
     return gAgent.getGodLevel() >= GOD_LIAISON;
 }
@@ -8293,7 +8432,7 @@ bool is_god_customer_service()
     return gAgent.getGodLevel() >= GOD_CUSTOMER_SERVICE;
 }
 
-BOOL enable_god_basic(void*)
+bool enable_god_basic(void*)
 {
     return gAgent.getGodLevel() > GOD_NOT;
 }
@@ -8304,7 +8443,7 @@ void toggle_show_xui_names(void *)
     gSavedSettings.setBOOL("DebugShowXUINames", !gSavedSettings.getBOOL("DebugShowXUINames"));
 }
 
-BOOL check_show_xui_names(void *)
+bool check_show_xui_names(void *)
 {
     return gSavedSettings.getBOOL("DebugShowXUINames");
 }
@@ -8313,7 +8452,7 @@ class LLToolsSelectOnlyMyObjects : public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
-        BOOL cur_val = gSavedSettings.getBOOL("SelectOwnedOnly");
+        bool cur_val = gSavedSettings.getBOOL("SelectOwnedOnly");
 
         gSavedSettings.setBOOL("SelectOwnedOnly", ! cur_val );
 
@@ -8325,7 +8464,7 @@ class LLToolsSelectOnlyMovableObjects : public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
-        BOOL cur_val = gSavedSettings.getBOOL("SelectMovableOnly");
+        bool cur_val = gSavedSettings.getBOOL("SelectMovableOnly");
 
         gSavedSettings.setBOOL("SelectMovableOnly", ! cur_val );
 
@@ -8337,7 +8476,7 @@ class LLToolsSelectInvisibleObjects : public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
-        BOOL cur_val = gSavedSettings.getBOOL("SelectInvisibleObjects");
+        bool cur_val = gSavedSettings.getBOOL("SelectInvisibleObjects");
 
         gSavedSettings.setBOOL("SelectInvisibleObjects", !cur_val);
 
@@ -8349,7 +8488,7 @@ class LLToolsSelectReflectionProbes: public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
-        BOOL cur_val = gSavedSettings.getBOOL("SelectReflectionProbes");
+        bool cur_val = gSavedSettings.getBOOL("SelectReflectionProbes");
 
         gSavedSettings.setBOOL("SelectReflectionProbes", !cur_val);
 
@@ -8396,7 +8535,7 @@ class LLToolsEditLinkedParts : public view_listener_t
 {
     bool handleEvent(const LLSD& userdata)
     {
-        BOOL select_individuals = !gSavedSettings.getBOOL("EditLinkedParts");
+        bool select_individuals = !gSavedSettings.getBOOL("EditLinkedParts");
         gSavedSettings.setBOOL( "EditLinkedParts", select_individuals );
         if (select_individuals)
         {
@@ -8476,7 +8615,7 @@ void handle_grab_baked_texture(void* data)
                                         LLInventoryItemFlags::II_FLAGS_NONE,
                                         creation_date_now);
 
-        item->updateServer(TRUE);
+        item->updateServer(true);
         gInventory.updateItem(item);
         gInventory.notifyObservers();
 
@@ -8500,14 +8639,14 @@ void handle_grab_baked_texture(void* data)
     }
 }
 
-BOOL enable_grab_baked_texture(void* data)
+bool enable_grab_baked_texture(void* data)
 {
     EBakedTextureIndex index = (EBakedTextureIndex)((intptr_t)data);
     if (isAgentAvatarValid())
     {
         return gAgentAvatarp->canGrabBakedTexture(index);
     }
-    return FALSE;
+    return false;
 }
 
 // Returns a pointer to the avatar give the UUID of the avatar OR of an attachment the avatar is wearing.
@@ -8634,18 +8773,18 @@ LLViewerMenuHolderGL::LLViewerMenuHolderGL(const LLViewerMenuHolderGL::Params& p
 : LLMenuHolderGL(p)
 {}
 
-BOOL LLViewerMenuHolderGL::hideMenus()
+bool LLViewerMenuHolderGL::hideMenus()
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if (LLMenuHolderGL::hideMenus())
     {
-        handled = TRUE;
+        handled = true;
     }
 
     // drop pie menu selection
-    mParcelSelection = NULL;
-    mObjectSelection = NULL;
+    mParcelSelection = nullptr;
+    mObjectSelection = nullptr;
 
     if (gMenuBarView)
     {
@@ -8761,7 +8900,7 @@ void toggle_visibility(void* user_data)
     viewp->setVisible(!viewp->getVisible());
 }
 
-BOOL get_visibility(void* user_data)
+bool get_visibility(void* user_data)
 {
     LLView* viewp = (LLView*)user_data;
     return viewp->getVisible();
@@ -9093,9 +9232,9 @@ class LLToolsSelectTool : public view_listener_t
         // attempt to open it, but it won't bring it to front or de-minimize.
         if (gFloaterTools && (gFloaterTools->isMinimized() || !gFloaterTools->isShown() || !gFloaterTools->isFrontmost()))
         {
-            gFloaterTools->setMinimized(FALSE);
+            gFloaterTools->setMinimized(false);
             gFloaterTools->openFloater();
-            gFloaterTools->setVisibleAndFrontmost(TRUE);
+            gFloaterTools->setVisibleAndFrontmost(true);
         }
         return true;
     }
@@ -9113,7 +9252,7 @@ class LLWorldEnvSettings : public view_listener_t
             LLFloater* env_floater = LLFloaterReg::findTypedInstance<LLFloater>(*it);
             if (env_floater)
             {
-                env_floater->setFocus(FALSE);
+                env_floater->setFocus(false);
             }
         }
     }
@@ -9618,6 +9757,7 @@ void initialize_menus()
     enable.add("Tools.EnableUnlink", boost::bind(&LLSelectMgr::enableUnlinkObjects, LLSelectMgr::getInstance()));
     view_listener_t::addMenu(new LLToolsEnableBuyOrTake(), "Tools.EnableBuyOrTake");
     enable.add("Tools.EnableTakeCopy", boost::bind(&enable_object_take_copy));
+    enable.add("Tools.EnableCopySeparate", boost::bind(&enable_take_copy_objects));
     enable.add("Tools.VisibleBuyObject", boost::bind(&tools_visible_buy_object));
     enable.add("Tools.VisibleTakeObject", boost::bind(&tools_visible_take_object));
     view_listener_t::addMenu(new LLToolsEnableSaveToObjectInventory(), "Tools.EnableSaveToObjectInventory");
@@ -9672,7 +9812,10 @@ void initialize_menus()
     view_listener_t::addMenu(new LLAdvancedClickRenderProfile(), "Advanced.ClickRenderProfile");
     view_listener_t::addMenu(new LLAdvancedClickRenderBenchmark(), "Advanced.ClickRenderBenchmark");
     view_listener_t::addMenu(new LLAdvancedClickHDRIPreview(), "Advanced.ClickHDRIPreview");
-    view_listener_t::addMenu(new LLAdvancedClickGLTFScenePreview(), "Advanced.ClickGLTFScenePreview");
+    view_listener_t::addMenu(new LLAdvancedClickGLTFOpen(), "Advanced.ClickGLTFOpen");
+    view_listener_t::addMenu(new LLAdvancedClickGLTFSaveAs(), "Advanced.ClickGLTFSaveAs");
+    view_listener_t::addMenu(new LLAdvancedClickGLTFUpload(), "Advanced.ClickGLTFUpload");
+    view_listener_t::addMenu(new LLAdvancedClickResizeWindow(), "Advanced.ClickResizeWindow");
     view_listener_t::addMenu(new LLAdvancedPurgeShaderCache(), "Advanced.ClearShaderCache");
     view_listener_t::addMenu(new LLAdvancedRebuildTerrain(), "Advanced.RebuildTerrain");
 
@@ -9891,6 +10034,9 @@ void initialize_menus()
     view_listener_t::addMenu(new LLObjectMute(), "Object.Mute");
 
     enable.add("Object.VisibleTake", boost::bind(&visible_take_object));
+    enable.add("Object.VisibleTakeMultiple", boost::bind(&is_multiple_selection));
+    enable.add("Object.VisibleTakeSingle", boost::bind(&is_single_selection));
+    enable.add("Object.EnableTakeMultiple", boost::bind(&enable_take_objects));
     enable.add("Object.VisibleBuy", boost::bind(&visible_buy_object));
 
     commit.add("Object.Buy", boost::bind(&handle_buy));
@@ -9899,7 +10045,9 @@ void initialize_menus()
     commit.add("Object.EditGLTFMaterial", boost::bind(&handle_object_edit_gltf_material));
     commit.add("Object.Inspect", boost::bind(&handle_object_inspect));
     commit.add("Object.Open", boost::bind(&handle_object_open));
-    commit.add("Object.Take", boost::bind(&handle_take));
+    commit.add("Object.Take", boost::bind(&handle_take, false));
+    commit.add("Object.TakeSeparate", boost::bind(&handle_take, true));
+    commit.add("Object.TakeSeparateCopy", boost::bind(&handle_take_separate_copy));
     commit.add("Object.ShowInspector", boost::bind(&handle_object_show_inspector));
     enable.add("Object.EnableInspect", boost::bind(&enable_object_inspect));
     enable.add("Object.EnableEditGLTFMaterial", boost::bind(&enable_object_edit_gltf_material));
@@ -9972,6 +10120,9 @@ void initialize_menus()
     commit.add("Pathfinding.Characters.Select", boost::bind(&LLFloaterPathfindingCharacters::openCharactersWithSelectedObjects));
     enable.add("EnableSelectInPathfindingCharacters", boost::bind(&enable_object_select_in_pathfinding_characters));
     enable.add("Advanced.EnableErrorOSException", boost::bind(&enable_os_exception));
+    enable.add("EnableGLTF", boost::bind(&enable_gltf));
+    enable.add("EnableGLTFSaveAs", boost::bind(&enable_gltf_save_as));
+    enable.add("EnableGLTFUpload", boost::bind(&enable_gltf_upload));
 
     view_listener_t::addMenu(new LLFloaterVisible(), "FloaterVisible");
     view_listener_t::addMenu(new LLShowSidetrayPanel(), "ShowSidetrayPanel");
diff --git a/indra/newview/llviewermenu.h b/indra/newview/llviewermenu.h
index f4f48d88c0..49c2b6272c 100644
--- a/indra/newview/llviewermenu.h
+++ b/indra/newview/llviewermenu.h
@@ -61,27 +61,27 @@ void handle_deselect(void*);
 void handle_delete_object();
 void handle_duplicate(void*);
 void handle_duplicate_in_place(void*);
-BOOL enable_not_have_card(void *userdata);
+bool enable_not_have_card(void *userdata);
 void process_grant_godlike_powers(LLMessageSystem* msg, void**);
 
-BOOL enable_cut(void*);
-BOOL enable_copy(void*);
-BOOL enable_paste(void*);
-BOOL enable_select_all(void*);
-BOOL enable_deselect(void*);
-BOOL enable_undo(void*);
-BOOL enable_redo(void*);
+bool enable_cut(void*);
+bool enable_copy(void*);
+bool enable_paste(void*);
+bool enable_select_all(void*);
+bool enable_deselect(void*);
+bool enable_undo(void*);
+bool enable_redo(void*);
 
-BOOL is_agent_mappable(const LLUUID& agent_id);
+bool is_agent_mappable(const LLUUID& agent_id);
 
 void confirm_replace_attachment(S32 option, void* user_data);
 void handle_detach_from_avatar(const LLSD& user_data);
 void attach_label(std::string& label, const LLSD&);
 void detach_label(std::string& label, const LLSD&);
 void handle_detach(void*);
-BOOL enable_god_full(void* user_data);
-BOOL enable_god_liaison(void* user_data);
-BOOL enable_god_basic(void* user_data);
+bool enable_god_full(void* user_data);
+bool enable_god_liaison(void* user_data);
+bool enable_god_basic(void* user_data);
 void check_merchant_status(bool force = false);
 
 void exchange_callingcard(const LLUUID& dest_id);
@@ -103,7 +103,7 @@ bool enable_object_delete();
 
 // Buy either contents or object itself
 void handle_buy();
-void handle_take();
+void handle_take(bool take_separate = false);
 void handle_take_copy();
 void handle_look_at_selection(const LLSD& param);
 void handle_zoom_to_object(LLUUID object_id);
@@ -161,7 +161,7 @@ public:
 
     LLViewerMenuHolderGL(const Params& p);
 
-    virtual BOOL hideMenus();
+    virtual bool hideMenus();
 
     void setParcelSelection(LLSafeHandle<LLParcelSelection> selection);
     void setObjectSelection(LLSafeHandle<LLObjectSelection> selection);
diff --git a/indra/newview/llviewermenufile.cpp b/indra/newview/llviewermenufile.cpp
index 192ebd1f39..e3da52fc78 100644
--- a/indra/newview/llviewermenufile.cpp
+++ b/indra/newview/llviewermenufile.cpp
@@ -188,7 +188,7 @@ void LLFilePickerThread::run()
 
 void LLFilePickerThread::runModeless()
 {
-    BOOL result = FALSE;
+    bool result = false;
     LLFilePicker picker;
 
     if (mIsSaveDialog)
@@ -440,7 +440,7 @@ const bool check_file_extension(const std::string& filename, LLFilePicker::ELoad
         //now grab the set of valid file extensions
         std::string valid_extensions = build_extensions_string(type);
 
-        BOOL ext_valid = FALSE;
+        bool ext_valid = false;
 
         typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
         boost::char_separator<char> sep(" ");
@@ -451,7 +451,7 @@ const bool check_file_extension(const std::string& filename, LLFilePicker::ELoad
         //and compare them to the extension of the file
         //to be uploaded
         for (token_iter = tokens.begin();
-            token_iter != tokens.end() && ext_valid != TRUE;
+            token_iter != tokens.end() && !ext_valid;
             ++token_iter)
         {
             const std::string& cur_token = *token_iter;
@@ -460,11 +460,11 @@ const bool check_file_extension(const std::string& filename, LLFilePicker::ELoad
             {
                 //valid extension
                 //or the acceptable extension is any
-                ext_valid = TRUE;
+                ext_valid = true;
             }
         }//end for (loop over all tokens)
 
-        if (ext_valid == FALSE)
+        if (!ext_valid)
         {
             //should only get here if the extension exists
             //but is invalid
@@ -587,7 +587,7 @@ void do_bulk_upload(std::vector<std::string> filenames, const LLSD& notification
             tinygltf::Model model;
             if (LLTinyGLTFHelper::loadModel(filename, model))
             {
-                S32 materials_in_file = model.materials.size();
+                S32 materials_in_file = static_cast<S32>(model.materials.size());
 
                 for (S32 i = 0; i < materials_in_file; i++)
                 {
@@ -644,7 +644,7 @@ bool get_bulk_upload_expected_cost(const std::vector<std::string>& filenames, S3
 
             if (LLTinyGLTFHelper::loadModel(filename, model))
             {
-                S32 materials_in_file = model.materials.size();
+                S32 materials_in_file = static_cast<S32>(model.materials.size());
 
                 for (S32 i = 0; i < materials_in_file; i++)
                 {
@@ -756,7 +756,7 @@ class LLFileUploadModel : public view_listener_t
     bool handleEvent(const LLSD& userdata)
     {
         LLFloaterModelPreview::showModelPreview();
-        return TRUE;
+        return true;
     }
 };
 
@@ -765,7 +765,7 @@ class LLFileUploadMaterial : public view_listener_t
     bool handleEvent(const LLSD& userdata)
     {
         LLMaterialEditor::importMaterial();
-        return TRUE;
+        return true;
     }
 };
 
@@ -888,11 +888,11 @@ class LLFileTakeSnapshotToDisk : public view_listener_t
         S32 width = gViewerWindow->getWindowWidthRaw();
         S32 height = gViewerWindow->getWindowHeightRaw();
 
-        BOOL render_ui = gSavedSettings.getBOOL("RenderUIInSnapshot");
-        BOOL render_hud = gSavedSettings.getBOOL("RenderHUDInSnapshot");
-        BOOL render_no_post = gSavedSettings.getBOOL("RenderSnapshotNoPost");
+        bool render_ui = gSavedSettings.getBOOL("RenderUIInSnapshot");
+        bool render_hud = gSavedSettings.getBOOL("RenderHUDInSnapshot");
+        bool render_no_post = gSavedSettings.getBOOL("RenderSnapshotNoPost");
 
-        BOOL high_res = gSavedSettings.getBOOL("HighResSnapshot");
+        bool high_res = gSavedSettings.getBOOL("HighResSnapshot");
         if (high_res)
         {
             width *= 2;
@@ -905,11 +905,11 @@ class LLFileTakeSnapshotToDisk : public view_listener_t
         if (gViewerWindow->rawSnapshot(raw,
                                        width,
                                        height,
-                                       TRUE,
-                                       FALSE,
+                                       true,
+                                       false,
                                        render_ui,
                                        render_hud,
-                                       FALSE,
+                                       false,
                                        render_no_post,
                                        LLSnapshotModel::SNAPSHOT_TYPE_COLOR,
                                        high_res ? S32_MAX : MAX_SNAPSHOT_IMAGE_SIZE)) //per side
@@ -962,7 +962,7 @@ void handle_compress_image(void*)
             LL_INFOS() << "Input:  " << infile << LL_ENDL;
             LL_INFOS() << "Output: " << outfile << LL_ENDL;
 
-            BOOL success;
+            bool success;
 
             success = LLViewerTextureList::createUploadFile(infile, outfile, IMG_CODEC_TGA);
 
@@ -1012,7 +1012,7 @@ void handle_compress_file_test(void*)
 
             S64Bytes initial_size = S64Bytes(get_file_size(infile));
 
-            BOOL success;
+            bool success;
 
             F64 total_seconds = LLTimer::getTotalSeconds();
             success = gzip_file(infile, packfile);
@@ -1106,7 +1106,7 @@ void upload_done_callback(
     LLResourceData* data = (LLResourceData*)user_data;
     S32 expected_upload_cost = data ? data->mExpectedUploadCost : 0;
     //LLAssetType::EType pref_loc = data->mPreferredLocation;
-    BOOL is_balance_sufficient = TRUE;
+    bool is_balance_sufficient = true;
 
     if(data)
     {
@@ -1124,7 +1124,7 @@ void upload_done_callback(
                 if(!(can_afford_transaction(expected_upload_cost)))
                 {
                     LLBuyCurrencyHTML::openCurrencyFloater( "", expected_upload_cost );
-                    is_balance_sufficient = FALSE;
+                    is_balance_sufficient = false;
                 }
                 else if(region)
                 {
@@ -1285,7 +1285,7 @@ void upload_new_resource(
             data->mAssetInfo.mType,
             asset_callback,
             (void*)data,
-            FALSE);
+            false);
     }
 }
 
diff --git a/indra/newview/llviewermessage.cpp b/indra/newview/llviewermessage.cpp
index 52bc2d9654..5a32f9654d 100644
--- a/indra/newview/llviewermessage.cpp
+++ b/indra/newview/llviewermessage.cpp
@@ -127,7 +127,7 @@
 
 extern void on_new_message(const LLSD& msg);
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 //
 // Constants
@@ -139,7 +139,7 @@ const F32 CAMERA_POSITION_THRESHOLD_SQUARED = 0.001f * 0.001f;
 static const U32 LLREQUEST_PERMISSION_THROTTLE_LIMIT    = 5;     // requests
 static const F32 LLREQUEST_PERMISSION_THROTTLE_INTERVAL = 10.0f; // seconds
 
-extern BOOL gDebugClicks;
+extern bool gDebugClicks;
 extern bool gShiftFrame;
 
 // function prototypes
@@ -187,7 +187,7 @@ void accept_friendship_coro(std::string url, LLSD notification)
     }
     else
     {
-        if (!result.has("success") || result["success"].asBoolean() == false)
+        if (!result.has("success") || !result["success"].asBoolean())
         {
             LL_WARNS("Friendship") << "Server failed to process accepted friendship. " << httpResults << LL_ENDL;
         }
@@ -230,7 +230,7 @@ void decline_friendship_coro(std::string url, LLSD notification, S32 option)
     }
     else
     {
-        if (!result.has("success") || result["success"].asBoolean() == false)
+        if (!result.has("success") || !result["success"].asBoolean())
         {
             LL_WARNS("Friendship") << "Server failed to process declined friendship. " << httpResults << LL_ENDL;
         }
@@ -274,7 +274,7 @@ bool friendship_offer_callback(const LLSD& notification, const LLSD& response)
             // This will also trigger an onlinenotification if the user is online
             std::string url = gAgent.getRegionCapability("AcceptFriendship");
             LL_DEBUGS("Friendship") << "Cap string: " << url << LL_ENDL;
-            if (!url.empty() && payload.has("online") && payload["online"].asBoolean() == false)
+            if (!url.empty() && payload.has("online") && !payload["online"].asBoolean())
             {
                 LL_DEBUGS("Friendship") << "Accepting friendship via capability" << LL_ENDL;
                 LLCoros::instance().launch("LLMessageSystem::acceptFriendshipOffer",
@@ -314,7 +314,7 @@ bool friendship_offer_callback(const LLSD& notification, const LLSD& response)
                 // the rejection to the simulator to delete the pending userop.
                 std::string url = gAgent.getRegionCapability("DeclineFriendship");
                 LL_DEBUGS("Friendship") << "Cap string: " << url << LL_ENDL;
-                if (!url.empty() && payload.has("online") && payload["online"].asBoolean() == false)
+                if (!url.empty() && payload.has("online") && !payload["online"].asBoolean())
                 {
                     LL_DEBUGS("Friendship") << "Declining friendship via capability" << LL_ENDL;
                     LLCoros::instance().launch("LLMessageSystem::declineFriendshipOffer",
@@ -371,7 +371,7 @@ static LLNotificationFunctorRegistration friendship_offer_callback_reg_nm("Offer
 // Functions
 //
 
-void give_money(const LLUUID& uuid, LLViewerRegion* region, S32 amount, BOOL is_group,
+void give_money(const LLUUID& uuid, LLViewerRegion* region, S32 amount, bool is_group,
                 S32 trx_type, const std::string& desc)
 {
     if(0 == amount || !region) return;
@@ -393,7 +393,7 @@ void give_money(const LLUUID& uuid, LLViewerRegion* region, S32 amount, BOOL is_
         msg->nextBlockFast(_PREHASH_MoneyData);
         msg->addUUIDFast(_PREHASH_SourceID, gAgent.getID() );
         msg->addUUIDFast(_PREHASH_DestID, uuid);
-        msg->addU8Fast(_PREHASH_Flags, pack_transaction_flags(FALSE, is_group));
+        msg->addU8Fast(_PREHASH_Flags, pack_transaction_flags(false, is_group));
         msg->addS32Fast(_PREHASH_Amount, amount);
         msg->addU8Fast(_PREHASH_AggregatePermNextOwner, (U8)LLAggregatePermissions::AP_EMPTY);
         msg->addU8Fast(_PREHASH_AggregatePermInventory, (U8)LLAggregatePermissions::AP_EMPTY);
@@ -507,192 +507,6 @@ void process_layer_data(LLMessageSystem *mesgsys, void **user_data)
     }
 }
 
-// S32 exported_object_count = 0;
-// S32 exported_image_count = 0;
-// S32 current_object_count = 0;
-// S32 current_image_count = 0;
-
-// extern LLNotifyBox *gExporterNotify;
-// extern LLUUID gExporterRequestID;
-// extern std::string gExportDirectory;
-
-// extern LLUploadDialog *gExportDialog;
-
-// std::string gExportedFile;
-
-// std::map<LLUUID, std::string> gImageChecksums;
-
-// void export_complete()
-// {
-//      LLUploadDialog::modalUploadFinished();
-//      gExporterRequestID.setNull();
-//      gExportDirectory = "";
-
-//      LLFILE* fXML = LLFile::fopen(gExportedFile, "rb");      /* Flawfinder: ignore */
-//      fseek(fXML, 0, SEEK_END);
-//      long length = ftell(fXML);
-//      fseek(fXML, 0, SEEK_SET);
-//      U8 *buffer = new U8[length + 1];
-//      size_t nread = fread(buffer, 1, length, fXML);
-//      if (nread < (size_t) length)
-//      {
-//          LL_WARNS("Messaging") << "Short read" << LL_ENDL;
-//      }
-//      buffer[nread] = '\0';
-//      fclose(fXML);
-
-//      char *pos = (char *)buffer;
-//      while ((pos = strstr(pos+1, "<sl:image ")) != 0)
-//      {
-//          char *pos_check = strstr(pos, "checksum=\"");
-
-//          if (pos_check)
-//          {
-//              char *pos_uuid = strstr(pos_check, "\">");
-
-//              if (pos_uuid)
-//              {
-//                  char image_uuid_str[UUID_STR_SIZE];     /* Flawfinder: ignore */
-//                  memcpy(image_uuid_str, pos_uuid+2, UUID_STR_SIZE-1);        /* Flawfinder: ignore */
-//                  image_uuid_str[UUID_STR_SIZE-1] = 0;
-
-//                  LLUUID image_uuid(image_uuid_str);
-
-//                  LL_INFOS("Messaging") << "Found UUID: " << image_uuid << LL_ENDL;
-
-//                  std::map<LLUUID, std::string>::iterator itor = gImageChecksums.find(image_uuid);
-//                  if (itor != gImageChecksums.end())
-//                  {
-//                      LL_INFOS("Messaging") << "Replacing with checksum: " << itor->second << LL_ENDL;
-//                      if (!itor->second.empty())
-//                      {
-//                          memcpy(&pos_check[10], itor->second.c_str(), 32);       /* Flawfinder: ignore */
-//                      }
-//                  }
-//              }
-//          }
-//      }
-
-//      LLFILE* fXMLOut = LLFile::fopen(gExportedFile, "wb");       /* Flawfinder: ignore */
-//      if (fwrite(buffer, 1, length, fXMLOut) != length)
-//      {
-//          LL_WARNS("Messaging") << "Short write" << LL_ENDL;
-//      }
-//      fclose(fXMLOut);
-
-//      delete [] buffer;
-// }
-
-
-// void exported_item_complete(const LLTSCode status, void *user_data)
-// {
-//  //std::string *filename = (std::string *)user_data;
-
-//  if (status < LLTS_OK)
-//  {
-//      LL_WARNS("Messaging") << "Export failed!" << LL_ENDL;
-//  }
-//  else
-//  {
-//      ++current_object_count;
-//      if (current_image_count == exported_image_count && current_object_count == exported_object_count)
-//      {
-//          LL_INFOS("Messaging") << "*** Export complete ***" << LL_ENDL;
-
-//          export_complete();
-//      }
-//      else
-//      {
-//          gExportDialog->setMessage(llformat("Exported %d/%d object files, %d/%d textures.", current_object_count, exported_object_count, current_image_count, exported_image_count));
-//      }
-//  }
-// }
-
-// struct exported_image_info
-// {
-//  LLUUID image_id;
-//  std::string filename;
-//  U32 image_num;
-// };
-
-// void exported_j2c_complete(const LLTSCode status, void *user_data)
-// {
-//  exported_image_info *info = (exported_image_info *)user_data;
-//  LLUUID image_id = info->image_id;
-//  U32 image_num = info->image_num;
-//  std::string filename = info->filename;
-//  delete info;
-
-//  if (status < LLTS_OK)
-//  {
-//      LL_WARNS("Messaging") << "Image download failed!" << LL_ENDL;
-//  }
-//  else
-//  {
-//      LLFILE* fIn = LLFile::fopen(filename, "rb");        /* Flawfinder: ignore */
-//      if (fIn)
-//      {
-//          LLPointer<LLImageJ2C> ImageUtility = new LLImageJ2C;
-//          LLPointer<LLImageTGA> TargaUtility = new LLImageTGA;
-
-//          fseek(fIn, 0, SEEK_END);
-//          S32 length = ftell(fIn);
-//          fseek(fIn, 0, SEEK_SET);
-//          U8 *buffer = ImageUtility->allocateData(length);
-//          if (fread(buffer, 1, length, fIn) != length)
-//          {
-//              LL_WARNS("Messaging") << "Short read" << LL_ENDL;
-//          }
-//          fclose(fIn);
-//          LLFile::remove(filename);
-
-//          // Convert to TGA
-//          LLPointer<LLImageRaw> image = new LLImageRaw();
-
-//          ImageUtility->updateData();
-//          ImageUtility->decode(image, 100000.0f);
-
-//          TargaUtility->encode(image);
-//          U8 *data = TargaUtility->getData();
-//          S32 data_size = TargaUtility->getDataSize();
-
-//          std::string file_path = gDirUtilp->getDirName(filename);
-
-//          std::string output_file = llformat("%s/image-%03d.tga", file_path.c_str(), image_num);//filename;
-//          //S32 name_len = output_file.length();
-//          //strcpy(&output_file[name_len-3], "tga");
-//          LLFILE* fOut = LLFile::fopen(output_file, "wb");        /* Flawfinder: ignore */
-//          char md5_hash_string[33];       /* Flawfinder: ignore */
-//          strcpy(md5_hash_string, "00000000000000000000000000000000");        /* Flawfinder: ignore */
-//          if (fOut)
-//          {
-//              if (fwrite(data, 1, data_size, fOut) != data_size)
-//              {
-//                  LL_WARNS("Messaging") << "Short write" << LL_ENDL;
-//              }
-//              fseek(fOut, 0, SEEK_SET);
-//              fclose(fOut);
-//              fOut = LLFile::fopen(output_file, "rb");        /* Flawfinder: ignore */
-//              LLMD5 my_md5_hash(fOut);
-//              my_md5_hash.hex_digest(md5_hash_string);
-//          }
-
-//          gImageChecksums.insert(std::pair<LLUUID, std::string>(image_id, md5_hash_string));
-//      }
-//  }
-
-//  ++current_image_count;
-//  if (current_image_count == exported_image_count && current_object_count == exported_object_count)
-//  {
-//      LL_INFOS("Messaging") << "*** Export textures complete ***" << LL_ENDL;
-//          export_complete();
-//  }
-//  else
-//  {
-//      gExportDialog->setMessage(llformat("Exported %d/%d object files, %d/%d textures.", current_object_count, exported_object_count, current_image_count, exported_image_count));
-//  }
-//}
-
 void process_derez_ack(LLMessageSystem*, void**)
 {
     if(gViewerWindow) gViewerWindow->getWindow()->decBusyCount();
@@ -774,7 +588,7 @@ void response_group_invitation_coro(std::string url, LLUUID group_id, bool notif
     }
     else
     {
-        if (!result.has("success") || result["success"].asBoolean() == false)
+        if (!result.has("success") || !result["success"].asBoolean())
         {
             LL_WARNS("GroupInvite") << "Server failed to process group " << group_id << " invitation response. " << httpResults << LL_ENDL;
         }
@@ -974,13 +788,13 @@ static void highlight_inventory_objects_in_panel(const std::vector<LLUUID>& item
                     // Parent folders can be different in case of 2 consecutive drag and drop
                     // operations when the second one is started before the first one completes.
                     LL_DEBUGS("Inventory_Move") << "Open folder: " << fv_folder->getName() << LL_ENDL;
-                    fv_folder->setOpen(TRUE);
+                    fv_folder->setOpen(true);
                     if (fv_folder->isSelected())
                     {
-                        fv->changeSelection(fv_folder, FALSE);
+                        fv->changeSelection(fv_folder, false);
                     }
                 }
-                fv->changeSelection(fv_item, TRUE);
+                fv->changeSelection(fv_item, true);
             }
         }
     }
@@ -1344,7 +1158,7 @@ protected:
 };
 
 
-//Returns TRUE if we are OK, FALSE if we are throttled
+//Returns true if we are OK, false if we are throttled
 //Set check_only true if you want to know the throttle status
 //without registering a hit
 bool check_offer_throttle(const std::string& from_name, bool check_only)
@@ -1465,7 +1279,7 @@ void open_inventory_offer(const uuid_vec_t& objects, const std::string& from_nam
             {
                 LL_DEBUGS("Messaging") << "Highlighting inventory item: " << item->getUUID()  << LL_ENDL;
                 // If we opened this ourselves, focus it
-                const BOOL take_focus = from_name.empty() ? TAKE_FOCUS_YES : TAKE_FOCUS_NO;
+                const bool take_focus = from_name.empty() ? TAKE_FOCUS_YES : TAKE_FOCUS_NO;
                 switch(asset_type)
                 {
                     case LLAssetType::AT_NOTECARD:
@@ -1564,7 +1378,7 @@ void open_inventory_offer(const uuid_vec_t& objects, const std::string& from_nam
             // Highlight item
             bool show_in_inventory = gSavedSettings.get<bool>("ShowInInventory");
             bool auto_open =
-                show_in_inventory && // don't open if ShowInInventory is FALSE
+                show_in_inventory && // don't open if ShowInInventory is false
                 !from_name.empty();  // don't open if it's not from anyone
 
             // SL-20419 : Don't change active tab if floater is visible
@@ -1646,7 +1460,7 @@ void inventory_offer_mute_callback(const LLUUID& blocked_id,
             {
                 return (notification->getPayload()["from_id"].asUUID() == blocked_id);
             }
-            return FALSE;
+            return false;
         }
     private:
         const LLUUID& blocked_id;
@@ -1669,8 +1483,8 @@ std::string LLOfferInfo::mResponderType = "offer_info";
 
 LLOfferInfo::LLOfferInfo()
  : LLNotificationResponderInterface()
- , mFromGroup(FALSE)
- , mFromObject(FALSE)
+ , mFromGroup(false)
+ , mFromObject(false)
  , mIM(IM_NOTHING_SPECIAL)
  , mType(LLAssetType::AT_NONE)
  , mPersist(false)
@@ -1753,7 +1567,7 @@ void LLOfferInfo::sendReceiveResponse(bool accept, const LLUUID &destination_fol
     msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
     msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
     msg->nextBlockFast(_PREHASH_MessageBlock);
-    msg->addBOOLFast(_PREHASH_FromGroup, FALSE);
+    msg->addBOOLFast(_PREHASH_FromGroup, false);
     msg->addUUIDFast(_PREHASH_ToAgentID, mFromID);
     msg->addU8Fast(_PREHASH_Offline, IM_ONLINE);
     msg->addUUIDFast(_PREHASH_ID, mTransactionID);
@@ -1947,7 +1761,7 @@ bool LLOfferInfo::inventory_offer_callback(const LLSD& notification, const LLSD&
             chat.mText = log_message;
             if( LLMuteList::getInstance()->isMuted(mFromID ) && ! LLMuteList::isLinden(mFromName) )  // muting for SL-42269
             {
-                chat.mMuted = TRUE;
+                chat.mMuted = true;
                 accept_to_trash = false; // will send decline message
             }
 
@@ -2042,25 +1856,29 @@ bool LLOfferInfo::inventory_task_offer_callback(const LLSD& notification, const
     std::string from_string; // Used in the pop-up.
     std::string chatHistory_string;  // Used in chat history.
 
-    if (mFromObject == TRUE)
+    if (mFromObject)
     {
+        std::string quot = LLTrans::getString("'");
         if (mFromGroup)
         {
             std::string group_name;
             if (gCacheName->getGroupName(mFromID, group_name))
             {
-                from_string = LLTrans::getString("InvOfferAnObjectNamed") + " "+"'"
-                + mFromName + LLTrans::getString("'") +" " + LLTrans::getString("InvOfferOwnedByGroup")
-                + " "+ "'" + group_name + "'";
-
-                chatHistory_string = mFromName + " " + LLTrans::getString("InvOfferOwnedByGroup")
-                + " " + group_name + "'";
+                from_string = LLTrans::getString("InvOfferAnObjectNamed") + " " +
+                    quot + mFromName + quot + " " +
+                    LLTrans::getString("InvOfferOwnedByGroup") + " " +
+                    quot + group_name + quot;
+                chatHistory_string = mFromName + " " +
+                    LLTrans::getString("InvOfferOwnedByGroup") + " " +
+                    quot + group_name + quot;
             }
             else
             {
-                from_string = LLTrans::getString("InvOfferAnObjectNamed") + " "+"'"
-                + mFromName +"'"+ " " + LLTrans::getString("InvOfferOwnedByUnknownGroup");
-                chatHistory_string = mFromName + " " + LLTrans::getString("InvOfferOwnedByUnknownGroup");
+                from_string = LLTrans::getString("InvOfferAnObjectNamed") + " " +
+                    quot + mFromName + quot + " " +
+                    LLTrans::getString("InvOfferOwnedByUnknownGroup");
+                chatHistory_string = mFromName + " " +
+                    LLTrans::getString("InvOfferOwnedByUnknownGroup");
             }
         }
         else
@@ -2068,15 +1886,19 @@ bool LLOfferInfo::inventory_task_offer_callback(const LLSD& notification, const
             LLAvatarName av_name;
             if (LLAvatarNameCache::get(mFromID, &av_name))
             {
-                from_string = LLTrans::getString("InvOfferAnObjectNamed") + " "+ LLTrans::getString("'") + mFromName
-                    + LLTrans::getString("'")+" " + LLTrans::getString("InvOfferOwnedBy") + av_name.getUserName();
-                chatHistory_string = mFromName + " " + LLTrans::getString("InvOfferOwnedBy") + " " + av_name.getUserName();
+                from_string = LLTrans::getString("InvOfferAnObjectNamed") + " " +
+                    quot + mFromName + quot + " " +
+                    LLTrans::getString("InvOfferOwnedBy") + " " + av_name.getUserName();
+                chatHistory_string = mFromName + " " +
+                    LLTrans::getString("InvOfferOwnedBy") + " " + av_name.getUserName();
             }
             else
             {
-                from_string = LLTrans::getString("InvOfferAnObjectNamed") + " "+LLTrans::getString("'")
-                + mFromName + LLTrans::getString("'")+" " + LLTrans::getString("InvOfferOwnedByUnknownUser");
-                chatHistory_string = mFromName + " " + LLTrans::getString("InvOfferOwnedByUnknownUser");
+                from_string = LLTrans::getString("InvOfferAnObjectNamed") + " " +
+                    quot + mFromName + quot + " " +
+                    LLTrans::getString("InvOfferOwnedByUnknownUser");
+                chatHistory_string = mFromName + " " +
+                    LLTrans::getString("InvOfferOwnedByUnknownUser");
             }
         }
     }
@@ -2168,7 +1990,7 @@ bool lure_callback(const LLSD& notification, const LLSD& response)
 
     LLUUID from_id = notification["payload"]["from_id"].asUUID();
     LLUUID lure_id = notification["payload"]["lure_id"].asUUID();
-    BOOL godlike = notification["payload"]["godlike"].asBoolean();
+    bool godlike = notification["payload"]["godlike"].asBoolean();
 
     switch(option)
     {
@@ -2217,7 +2039,7 @@ bool mature_lure_callback(const LLSD& notification, const LLSD& response)
 
     LLUUID from_id = notification["payload"]["from_id"].asUUID();
     LLUUID lure_id = notification["payload"]["lure_id"].asUUID();
-    BOOL godlike = notification["payload"]["godlike"].asBoolean();
+    bool godlike = notification["payload"]["godlike"].asBoolean();
     U8 region_access = static_cast<U8>(notification["payload"]["region_maturity"].asInteger());
 
     switch(option)
@@ -2282,7 +2104,7 @@ void process_improved_im(LLMessageSystem *msg, void **user_data)
     LL_PROFILE_ZONE_SCOPED;
 
     LLUUID from_id;
-    BOOL from_group;
+    bool from_group;
     LLUUID to_id;
     U8 offline;
     U8 d = 0;
@@ -2342,7 +2164,7 @@ void send_do_not_disturb_message (LLMessageSystem* msg, const LLUUID& from_id, c
         pack_instant_message(
             msg,
             gAgent.getID(),
-            FALSE,
+            false,
             gAgent.getSessionID(),
             from_id,
             my_name,
@@ -2542,10 +2364,10 @@ void process_chat_from_simulator(LLMessageSystem *msg, void **user_data)
         chat.mFromName = from_name;
     }
 
-    BOOL is_do_not_disturb = gAgent.isDoNotDisturb();
+    bool is_do_not_disturb = gAgent.isDoNotDisturb();
 
-    BOOL is_muted = FALSE;
-    BOOL is_linden = FALSE;
+    bool is_muted = false;
+    bool is_linden = false;
     is_muted = LLMuteList::getInstance()->isMuted(
         from_id,
         from_name,
@@ -2559,7 +2381,7 @@ void process_chat_from_simulator(LLMessageSystem *msg, void **user_data)
         return;
     }
 
-    BOOL is_audible = (CHAT_AUDIBLE_FULLY == chat.mAudible);
+    bool is_audible = (CHAT_AUDIBLE_FULLY == chat.mAudible);
     chatter = gObjectList.findObject(from_id);
     if (chatter)
     {
@@ -2593,25 +2415,25 @@ void process_chat_from_simulator(LLMessageSystem *msg, void **user_data)
 
     if (is_audible)
     {
-        //BOOL visible_in_chat_bubble = FALSE;
+        //bool visible_in_chat_bubble = false;
 
         color.setVec(1.f,1.f,1.f,1.f);
         msg->getStringFast(_PREHASH_ChatData, _PREHASH_Message, mesg);
 
-        BOOL ircstyle = FALSE;
+        bool ircstyle = false;
 
         // Look for IRC-style emotes here so chatbubbles work
         std::string prefix = mesg.substr(0, 4);
         if (prefix == "/me " || prefix == "/me'")
         {
-            ircstyle = TRUE;
+            ircstyle = true;
         }
         chat.mText = mesg;
 
         // Look for the start of typing so we can put "..." in the bubbles.
         if (CHAT_TYPE_START == chat.mChatType)
         {
-            LLLocalSpeakerMgr::getInstance()->setSpeakerTyping(from_id, TRUE);
+            LLLocalSpeakerMgr::getInstance()->setSpeakerTyping(from_id, true);
 
             // Might not have the avatar constructed yet, eg on login.
             if (chatter && chatter->isAvatar())
@@ -2622,7 +2444,7 @@ void process_chat_from_simulator(LLMessageSystem *msg, void **user_data)
         }
         else if (CHAT_TYPE_STOP == chat.mChatType)
         {
-            LLLocalSpeakerMgr::getInstance()->setSpeakerTyping(from_id, FALSE);
+            LLLocalSpeakerMgr::getInstance()->setSpeakerTyping(from_id, false);
 
             // Might not have the avatar constructed yet, eg on login.
             if (chatter && chatter->isAvatar())
@@ -2671,7 +2493,7 @@ void process_chat_from_simulator(LLMessageSystem *msg, void **user_data)
         // We have a real utterance now, so can stop showing "..." and proceed.
         if (chatter && chatter->isAvatar())
         {
-            LLLocalSpeakerMgr::getInstance()->setSpeakerTyping(from_id, FALSE);
+            LLLocalSpeakerMgr::getInstance()->setSpeakerTyping(from_id, false);
             ((LLVOAvatar*)chatter)->stopTyping();
 
             if (!is_muted && !is_do_not_disturb)
@@ -2778,11 +2600,11 @@ void process_teleport_start(LLMessageSystem *msg, void**)
 
     if (teleport_flags & TELEPORT_FLAGS_DISABLE_CANCEL)
     {
-        gViewerWindow->setProgressCancelButtonVisible(FALSE);
+        gViewerWindow->setProgressCancelButtonVisible(false);
     }
     else
     {
-        gViewerWindow->setProgressCancelButtonVisible(TRUE, LLTrans::getString("Cancel"));
+        gViewerWindow->setProgressCancelButtonVisible(true, LLTrans::getString("Cancel"));
     }
 
     // Freeze the UI and show progress bar
@@ -2790,7 +2612,7 @@ void process_teleport_start(LLMessageSystem *msg, void**)
 
     if( gAgent.getTeleportState() == LLAgent::TELEPORT_NONE )
     {
-        gTeleportDisplay = TRUE;
+        gTeleportDisplay = true;
         gAgent.setTeleportState( LLAgent::TELEPORT_START );
         make_ui_sound("UISndTeleportOut");
 
@@ -2820,11 +2642,11 @@ void process_teleport_progress(LLMessageSystem* msg, void**)
     msg->getU32("Info", "TeleportFlags", teleport_flags);
     if (teleport_flags & TELEPORT_FLAGS_DISABLE_CANCEL)
     {
-        gViewerWindow->setProgressCancelButtonVisible(FALSE);
+        gViewerWindow->setProgressCancelButtonVisible(false);
     }
     else
     {
-        gViewerWindow->setProgressCancelButtonVisible(TRUE, LLTrans::getString("Cancel"));
+        gViewerWindow->setProgressCancelButtonVisible(true, LLTrans::getString("Cancel"));
     }
     std::string buffer;
     msg->getString("Info", "Message", buffer);
@@ -2891,7 +2713,7 @@ public:
     virtual ~LLPostTeleportNotifiers();
 
     //function to be called at the supplied frequency
-    virtual BOOL tick();
+    virtual bool tick();
 };
 
 LLPostTeleportNotifiers::LLPostTeleportNotifiers() : LLEventTimer( 2.0 )
@@ -2902,9 +2724,9 @@ LLPostTeleportNotifiers::~LLPostTeleportNotifiers()
 {
 }
 
-BOOL LLPostTeleportNotifiers::tick()
+bool LLPostTeleportNotifiers::tick()
 {
-    BOOL all_done = FALSE;
+    bool all_done = false;
     if ( gAgent.getTeleportState() == LLAgent::TELEPORT_NONE )
     {
         // get callingcards and landmarks available to the user arriving.
@@ -2928,7 +2750,7 @@ BOOL LLPostTeleportNotifiers::tick()
                 gInventory.addObserver(fetcher);
             }
         }
-        all_done = TRUE;
+        all_done = true;
     }
 
     return all_done;
@@ -2962,7 +2784,7 @@ void process_teleport_finish(LLMessageSystem* msg, void**)
         {
             // Race condition? Make sure all variables are set correctly for teleport to work
             LL_WARNS("Teleport","Messaging") << "Teleport 'finish' message without 'start'. Setting state to TELEPORT_REQUESTED" << LL_ENDL;
-            gTeleportDisplay = TRUE;
+            gTeleportDisplay = true;
             LLViewerMessage::getInstance()->mTeleportStartedSignal();
             gAgent.setTeleportState(LLAgent::TELEPORT_REQUESTED);
             make_ui_sound("UISndTeleportOut");
@@ -2974,11 +2796,11 @@ void process_teleport_finish(LLMessageSystem* msg, void**)
     }
 
     // Teleport is finished; it can't be cancelled now.
-    gViewerWindow->setProgressCancelButtonVisible(FALSE);
+    gViewerWindow->setProgressCancelButtonVisible(false);
 
     // Do teleport effect for where you're leaving
     // VEFFECT: TeleportStart
-    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, TRUE);
+    LLHUDEffectSpiral *effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, true);
     effectp->setPositionGlobal(gAgent.getPositionGlobal());
     effectp->setColor(LLColor4U(gAgent.getEffectColor()));
     LLHUDManager::getInstance()->sendEffects();
@@ -3022,7 +2844,7 @@ void process_teleport_finish(LLMessageSystem* msg, void**)
     LLHost sim_host(sim_ip, sim_port);
 
     // Viewer trusts the simulator.
-    gMessageSystem->enableCircuit(sim_host, TRUE);
+    gMessageSystem->enableCircuit(sim_host, true);
     LLViewerRegion* regionp =  LLWorld::getInstance()->addRegion(region_handle, sim_host);
 
 /*
@@ -3030,7 +2852,7 @@ void process_teleport_finish(LLMessageSystem* msg, void**)
     gAgentCamera.updateCamera();
 
     // likewise make sure the camera is behind the avatar
-    gAgentCamera.resetView(TRUE);
+    gAgentCamera.resetView(true);
     LLVector3 shift_vector = regionp->getPosRegionFromGlobal(gAgent.getRegion()->getOriginGlobal());
     gAgent.setRegion(regionp);
     gObjectList.shiftObjects(shift_vector);
@@ -3073,15 +2895,15 @@ void process_teleport_finish(LLMessageSystem* msg, void**)
 
     // Now do teleport effect for where you're going.
     // VEFFECT: TeleportEnd
-    effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, TRUE);
+    effectp = (LLHUDEffectSpiral *)LLHUDManager::getInstance()->createViewerEffect(LLHUDObject::LL_HUD_EFFECT_POINT, true);
     effectp->setPositionGlobal(gAgent.getPositionGlobal());
 
     effectp->setColor(LLColor4U(gAgent.getEffectColor()));
     LLHUDManager::getInstance()->sendEffects();
 
-//  gTeleportDisplay = TRUE;
+//  gTeleportDisplay = true;
 //  gTeleportDisplayTimer.reset();
-//  gViewerWindow->setShowProgress(TRUE);
+//  gViewerWindow->setShowProgress(true);
 }
 
 // stuff we have to do every time we get an AvatarInitComplete from a sim
@@ -3178,7 +3000,7 @@ void process_agent_movement_complete(LLMessageSystem* msg, void**)
             look_at = LLViewerCamera::getInstance()->getAtAxis();
         }
         // Force the camera back onto the agent, don't animate.
-        gAgentCamera.setFocusOnAvatar(TRUE, FALSE);
+        gAgentCamera.setFocusOnAvatar(true, false);
         gAgentCamera.slamLookAt(look_at);
         gAgentCamera.updateCamera();
 
@@ -3238,15 +3060,15 @@ void process_agent_movement_complete(LLMessageSystem* msg, void**)
     /*
     if (teleport_flags & TELEPORT_FLAGS_IS_FLYING)
     {
-        gAgent.setFlying(TRUE);
+        gAgent.setFlying(true);
     }
     else
     {
-        gAgent.setFlying(FALSE);
+        gAgent.setFlying(false);
     }
     */
 
-    send_agent_update(TRUE, TRUE);
+    send_agent_update(true, true);
 
     if (gAgent.getRegion()->getBlockFly())
     {
@@ -3325,7 +3147,7 @@ const F32 THRESHOLD_HEAD_ROT_QDOT = 0.9997f;    // ~= 2.5 degrees -- if its less
 const F32 MAX_HEAD_ROT_QDOT = 0.99999f;         // ~= 0.5 degrees -- if its greater than this then no need to update head_rot
                                                 // between these values we delay the updates (but no more than one second)
 
-void send_agent_update(BOOL force_send, BOOL send_reliable)
+void send_agent_update(bool force_send, bool send_reliable)
 {
     LL_PROFILE_ZONE_SCOPED;
     llassert(!gCubeSnapshot);
@@ -3396,7 +3218,7 @@ void send_agent_update(BOOL force_send, BOOL send_reliable)
     // trigger a control event.
     U32 control_flags = gAgent.getControlFlags();
 
-    MASK    key_mask = gKeyboard->currentMask(TRUE);
+    MASK    key_mask = gKeyboard->currentMask(true);
 
     if (key_mask & MASK_ALT || key_mask & MASK_CONTROL)
     {
@@ -3970,7 +3792,7 @@ void process_preload_sound(LLMessageSystem *msg, void **user_data)
     if (gAgent.canAccessMaturityAtGlobal(pos_global))
     {
         // Add audioData starts a transfer internally.
-        sourcep->addAudioData(datap, FALSE);
+        sourcep->addAudioData(datap, false);
     }
 }
 
@@ -4085,7 +3907,7 @@ void process_sim_stats(LLMessageSystem *msg, void **user_data)
     LLViewerRegion* regionp = gAgent.getRegion();
     if (regionp)
     {
-        BOOL was_flying = gAgent.getFlying();
+        bool was_flying = gAgent.getFlying();
         regionp->setRegionFlags(region_flags);
         regionp->setMaxTasks(max_tasks_per_region);
         // HACK: This makes agents drop from the sky if the region is
@@ -4148,7 +3970,7 @@ void process_avatar_animation(LLMessageSystem *mesgsys, void **user_data)
             // See EXT-2781.
             if (animation_id == ANIM_AGENT_STANDUP && gAgent.getFlying())
             {
-                gAgent.setFlying(FALSE);
+                gAgent.setFlying(false);
             }
 
             if (i < num_source_blocks)
@@ -4158,9 +3980,9 @@ void process_avatar_animation(LLMessageSystem *mesgsys, void **user_data)
                 LLViewerObject* object = gObjectList.findObject(object_id);
                 if (object)
                 {
-                    object->setFlagsWithoutUpdate(FLAGS_ANIM_SOURCE, TRUE);
+                    object->setFlagsWithoutUpdate(FLAGS_ANIM_SOURCE, true);
 
-                    BOOL anim_found = FALSE;
+                    bool anim_found = false;
                     LLVOAvatar::AnimSourceIterator anim_it = avatarp->mAnimationSources.find(object_id);
                     for (;anim_it != avatarp->mAnimationSources.end(); ++anim_it)
                     {
@@ -4172,7 +3994,7 @@ void process_avatar_animation(LLMessageSystem *mesgsys, void **user_data)
                         }
                         if (anim_it->second == animation_id)
                         {
-                            anim_found = TRUE;
+                            anim_found = true;
                             break;
                         }
                     }
@@ -4299,7 +4121,7 @@ void process_camera_constraint(LLMessageSystem *mesgsys, void **user_data)
     gAgentCamera.setCameraCollidePlane(cameraCollidePlane);
 }
 
-void near_sit_object(BOOL success, void *data)
+void near_sit_object(bool success, void *data)
 {
     if (success)
     {
@@ -4317,7 +4139,7 @@ void process_avatar_sit_response(LLMessageSystem *mesgsys, void **user_data)
     LLVector3 sitPosition;
     LLQuaternion sitRotation;
     LLUUID sitObjectID;
-    BOOL use_autopilot;
+    bool use_autopilot;
     mesgsys->getUUIDFast(_PREHASH_SitObject, _PREHASH_ID, sitObjectID);
     mesgsys->getBOOLFast(_PREHASH_SitTransform, _PREHASH_AutoPilot, use_autopilot);
     mesgsys->getVector3Fast(_PREHASH_SitTransform, _PREHASH_SitPosition, sitPosition);
@@ -4326,7 +4148,7 @@ void process_avatar_sit_response(LLMessageSystem *mesgsys, void **user_data)
     mesgsys->getVector3Fast(_PREHASH_SitTransform, _PREHASH_CameraEyeOffset, camera_eye);
     LLVector3 camera_at;
     mesgsys->getVector3Fast(_PREHASH_SitTransform, _PREHASH_CameraAtOffset, camera_at);
-    BOOL force_mouselook;
+    bool force_mouselook;
     mesgsys->getBOOLFast(_PREHASH_SitTransform, _PREHASH_ForceMouselook, force_mouselook);
 
     if (isAgentAvatarValid() && dist_vec_squared(camera_eye, camera_at) > CAMERA_POSITION_THRESHOLD_SQUARED)
@@ -4337,7 +4159,7 @@ void process_avatar_sit_response(LLMessageSystem *mesgsys, void **user_data)
     gAgentCamera.setForceMouselook(force_mouselook);
     // Forcing turning off flying here to prevent flying after pressing "Stand"
     // to stand up from an object. See EXT-1655.
-    gAgent.setFlying(FALSE);
+    gAgent.setFlying(false);
 
     LLViewerObject* object = gObjectList.findObject(sitObjectID);
     if (object)
@@ -4385,7 +4207,7 @@ void process_set_follow_cam_properties(LLMessageSystem *mesgsys, void **user_dat
     LLViewerObject* objectp = gObjectList.findObject(source_id);
     if (objectp)
     {
-        objectp->setFlagsWithoutUpdate(FLAGS_CAMERA_SOURCE, TRUE);
+        objectp->setFlagsWithoutUpdate(FLAGS_CAMERA_SOURCE, true);
     }
 
     S32 num_objects = mesgsys->getNumberOfBlocks("CameraProperty");
@@ -4570,11 +4392,11 @@ void process_user_list_reply(LLMessageSystem *msg, void **user_data)
 
         if (status & 0x01)
         {
-            dialog_friends_add_friend(buffer, TRUE);
+            dialog_friends_add_friend(buffer, true);
         }
         else
         {
-            dialog_friends_add_friend(buffer, FALSE);
+            dialog_friends_add_friend(buffer, false);
         }
     }
 
@@ -4751,12 +4573,12 @@ static void process_money_balance_reply_extended(LLMessageSystem* msg)
     // and agent ids for name lookup.
     S32 transaction_type = 0;
     LLUUID source_id;
-    BOOL is_source_group = FALSE;
+    bool is_source_group = false;
     LLUUID dest_id;
-    BOOL is_dest_group = FALSE;
+    bool is_dest_group = false;
     S32 amount = 0;
     std::string item_description;
-    BOOL success = FALSE;
+    bool success = false;
 
     msg->getS32("TransactionInfo", "TransactionType", transaction_type);
     msg->getUUID("TransactionInfo", "SourceID", source_id);
@@ -5218,9 +5040,9 @@ bool attempt_standard_notification(LLMessageSystem* msgsystem)
             gViewerWindow->saveSnapshot(snap_filename,
                                         gViewerWindow->getWindowWidthRaw(),
                                         gViewerWindow->getWindowHeightRaw(),
-                                        FALSE, //UI
+                                        false, //UI
                                         gSavedSettings.getBOOL("RenderHUDInSnapshot"),
-                                        FALSE,
+                                        false,
                                         LLSnapshotModel::SNAPSHOT_TYPE_COLOR,
                                         LLSnapshotModel::SNAPSHOT_FORMAT_PNG);
         }
@@ -5323,9 +5145,9 @@ static void process_special_alert_messages(const std::string & message)
         gViewerWindow->saveSnapshot(snap_filename,
                                     gViewerWindow->getWindowWidthRaw(),
                                     gViewerWindow->getWindowHeightRaw(),
-                                    FALSE,
+                                    false,
                                     gSavedSettings.getBOOL("RenderHUDInSnapshot"),
-                                    FALSE,
+                                    false,
                                     LLSnapshotModel::SNAPSHOT_TYPE_COLOR,
                                     LLSnapshotModel::SNAPSHOT_FORMAT_PNG);
     }
@@ -5346,7 +5168,7 @@ void process_agent_alert_message(LLMessageSystem* msgsystem, void** user_data)
 
     if (!attempt_standard_notification(msgsystem))
     {
-        BOOL modal = FALSE;
+        bool modal = false;
         msgsystem->getBOOL("AlertData", "Modal", modal);
         process_alert_core(message, modal);
     }
@@ -5369,7 +5191,7 @@ void process_alert_message(LLMessageSystem *msgsystem, void **user_data)
 
     if (!attempt_standard_notification(msgsystem))
     {
-        BOOL modal = FALSE;
+        bool modal = false;
         process_alert_core(message, modal);
 
         static LLCachedControl<S32> ban_lines_mode(gSavedSettings , "ShowBanLines" , LLViewerParcelMgr::PARCEL_BAN_LINES_ON_COLLISION);
@@ -5404,7 +5226,7 @@ bool handle_special_alerts(const std::string &pAlertName)
     return isHandled;
 }
 
-void process_alert_core(const std::string& message, BOOL modal)
+void process_alert_core(const std::string& message, bool modal)
 {
     const std::string ALERT_PREFIX("ALERT: ");
     const std::string NOTIFY_PREFIX("NOTIFY: ");
@@ -5528,7 +5350,7 @@ void process_mean_collision_alert_message(LLMessageSystem *msgsystem, void **use
 
         type = (EMeanCollisionType)u8type;
 
-        BOOL b_found = FALSE;
+        bool b_found = false;
 
         for (mean_collision_list_t::iterator iter = gMeanCollisionList.begin();
              iter != gMeanCollisionList.end(); ++iter)
@@ -5538,7 +5360,7 @@ void process_mean_collision_alert_message(LLMessageSystem *msgsystem, void **use
             {
                 mcd->mTime = time;
                 mcd->mMag = mag;
-                b_found = TRUE;
+                b_found = true;
                 break;
             }
         }
@@ -5562,7 +5384,7 @@ void process_frozen_message(LLMessageSystem *msgsystem, void **user_data)
     // make sure the cursor is back to the usual default since the
     // alert is probably due to some kind of error.
     gViewerWindow->getWindow()->resetBusyCount();
-    BOOL b_frozen;
+    bool b_frozen;
 
     msgsystem->getBOOL("FrozenData", "Data", b_frozen);
 
@@ -5581,7 +5403,7 @@ void process_economy_data(LLMessageSystem *msg, void** /*user_data*/)
     LL_DEBUGS("Benefits") << "Received economy data, not currently used" << LL_ENDL;
 }
 
-void notify_cautioned_script_question(const LLSD& notification, const LLSD& response, S32 orig_questions, BOOL granted)
+void notify_cautioned_script_question(const LLSD& notification, const LLSD& response, S32 orig_questions, bool granted)
 {
     // only continue if at least some permissions were requested
     if (orig_questions)
@@ -5600,7 +5422,7 @@ void notify_cautioned_script_question(const LLSD& notification, const LLSD& resp
 
         // try to lookup viewerobject that corresponds to the object that
         // requested permissions (here, taskid->requesting object id)
-        BOOL foundpos = FALSE;
+        bool foundpos = false;
         LLViewerObject* viewobj = gObjectList.findObject(notification["payload"]["task_id"].asUUID());
         if (viewobj)
         {
@@ -5616,7 +5438,7 @@ void notify_cautioned_script_question(const LLSD& notification, const LLSD& resp
                 std::string formatpos = llformat("%.1f, %.1f,%.1f", objpos[VX], objpos[VY], objpos[VZ]);
                 notice.setArg("[REGIONPOS]", formatpos);
 
-                foundpos = TRUE;
+                foundpos = true;
             }
         }
 
@@ -5629,7 +5451,7 @@ void notify_cautioned_script_question(const LLSD& notification, const LLSD& resp
 
         // check each permission that was requested, and list each
         // permission that has been flagged as a caution permission
-        BOOL caution = FALSE;
+        bool caution = false;
         S32 count = 0;
         std::string perms;
         for (const script_perm_t& script_perm : SCRIPT_PERMISSIONS)
@@ -5638,7 +5460,7 @@ void notify_cautioned_script_question(const LLSD& notification, const LLSD& resp
                 && script_perm.caution)
             {
                 count++;
-                caution = TRUE;
+                caution = true;
 
                 // add a comma before the permission description if it is not the first permission
                 // added to the list or the last permission to check
@@ -5658,7 +5480,7 @@ void notify_cautioned_script_question(const LLSD& notification, const LLSD& resp
         if (caution)
         {
             LLChat chat(notice.getString());
-    //      LLFloaterChat::addChat(chat, FALSE, FALSE);
+    //      LLFloaterChat::addChat(chat, false, false);
         }
     }
 }
@@ -5699,13 +5521,13 @@ bool script_question_cb(const LLSD& notification, const LLSD& response)
     }
 
     // check whether permissions were granted or denied
-    BOOL allowed = TRUE;
+    bool allowed = true;
     // the "yes/accept" button is the first button in the template, making it button 0
     // if any other button was clicked, the permissions were denied
     if (option != 0)
     {
         new_questions = 0;
-        allowed = FALSE;
+        allowed = false;
     }
     else if(experience.notNull())
     {
@@ -5991,7 +5813,7 @@ void container_inventory_arrived(LLViewerObject* object,
                             LLSaleInfo::DEFAULT,
                             item->getFlags(),
                             creation_date_utc);
-                    new_item->updateServer(TRUE);
+                    new_item->updateServer(true);
                     gInventory.updateItem(new_item);
                 }
             }
@@ -6032,7 +5854,7 @@ void container_inventory_arrived(LLViewerObject* object,
                                         LLSaleInfo::DEFAULT,
                                         item->getFlags(),
                                         creation_date_utc);
-        new_item->updateServer(TRUE);
+        new_item->updateServer(true);
         gInventory.updateItem(new_item);
         gInventory.notifyObservers();
         if(active_panel)
@@ -6042,7 +5864,7 @@ void container_inventory_arrived(LLViewerObject* object,
     }
 
     // we've got the inventory, now delete this object if this was a take
-    BOOL delete_object = (BOOL)(intptr_t)data;
+    bool delete_object = (bool)(intptr_t)data;
     LLViewerRegion *region = gAgent.getRegion();
     if (delete_object && region)
     {
@@ -6192,7 +6014,7 @@ void process_teleport_local(LLMessageSystem *msg,void**)
             // after tp, keep the teleport state and let progress screen clear it after a short delay
             // (progress screen is active but not visible)  *TODO: remove when SVC-5290 is fixed
             gTeleportDisplayTimer.reset();
-            gTeleportDisplay = TRUE;
+            gTeleportDisplay = true;
         }
         else
         {
@@ -6205,11 +6027,11 @@ void process_teleport_local(LLMessageSystem *msg,void**)
     // Sim tells us whether the new position is off the ground
     if (teleport_flags & TELEPORT_FLAGS_IS_FLYING)
     {
-        gAgent.setFlying(TRUE);
+        gAgent.setFlying(true);
     }
     else
     {
-        gAgent.setFlying(FALSE);
+        gAgent.setFlying(false);
     }
 
     gAgent.setPositionAgent(pos);
@@ -6217,13 +6039,13 @@ void process_teleport_local(LLMessageSystem *msg,void**)
 
     if ( !(gAgent.getTeleportKeepsLookAt() && LLViewerJoystick::getInstance()->getOverrideCamera()) )
     {
-        gAgentCamera.resetView(TRUE, TRUE);
+        gAgentCamera.resetView(true, true);
     }
 
     // send camera update to new region
     gAgentCamera.updateCamera();
 
-    send_agent_update(TRUE, TRUE);
+    send_agent_update(true, true);
 
     // Let the interested parties know we've teleported.
     // Vadim *HACK: Agent position seems to get reset (to render position?)
@@ -6278,8 +6100,8 @@ void send_group_notice(const LLUUID& group_id,
         item_def["owner_id"] = item->getPermissions().getOwner();
         std::ostringstream ostr;
         LLSDSerialize::serialize(item_def, ostr, LLSDSerialize::LLSD_XML);
-        bin_bucket_size = ostr.str().copy(
-            (char*)bin_bucket, ostr.str().size());
+        bin_bucket_size = static_cast<S32>(ostr.str().copy(
+            (char*)bin_bucket, ostr.str().size()));
         bin_bucket[bin_bucket_size] = '\0';
     }
     else
@@ -6469,7 +6291,7 @@ void send_improved_im(const LLUUID& to_id,
     pack_instant_message(
         gMessageSystem,
         gAgent.getID(),
-        FALSE,
+        false,
         gAgent.getSessionID(),
         to_id,
         name,
@@ -6740,7 +6562,7 @@ void process_load_url(LLMessageSystem* msg, void**)
 {
     LLUUID object_id;
     LLUUID owner_id;
-    BOOL owner_is_group;
+    bool owner_is_group;
     char object_name[256];      /* Flawfinder: ignore */
     char message[256];      /* Flawfinder: ignore */
     char url[256];      /* Flawfinder: ignore */
@@ -6818,7 +6640,7 @@ void process_initiate_download(LLMessageSystem* msg, void**)
         sim_filename,
         LL_PATH_NONE,
         msg->getSender(),
-        FALSE,  // don't delete remote
+        false,  // don't delete remote
         callback_download_complete,
         (void**)new std::string(viewer_filename));
 }
@@ -6852,7 +6674,7 @@ void process_script_teleport_request(LLMessageSystem* msg, void**)
 
     // remove above two lines and replace with below line
     // to re-enable parcel browser for llMapDestination()
-    // LLURLDispatcher::dispatch(LLSLURL::buildSLURL(sim_name, (S32)pos.mV[VX], (S32)pos.mV[VY], (S32)pos.mV[VZ]), FALSE);
+    // LLURLDispatcher::dispatch(LLSLURL::buildSLURL(sim_name, (S32)pos.mV[VX], (S32)pos.mV[VY], (S32)pos.mV[VZ]), false);
 
 }
 
@@ -6911,7 +6733,7 @@ void process_covenant_reply(LLMessageSystem* msg, void**)
     LLFloaterBuyLand::updateLastModified(last_modified);
 
     // load the actual covenant asset data
-    const BOOL high_priority = TRUE;
+    const bool high_priority = true;
     if (covenant_id.notNull())
     {
         gAssetStorage->getEstateAsset(gAgent.getRegionHost(),
diff --git a/indra/newview/llviewermessage.h b/indra/newview/llviewermessage.h
index 2403e3de97..52f383faa9 100644
--- a/indra/newview/llviewermessage.h
+++ b/indra/newview/llviewermessage.h
@@ -62,8 +62,8 @@ enum InventoryOfferResponse
     IOR_SHOW
 };
 
-BOOL can_afford_transaction(S32 cost);
-void give_money(const LLUUID& uuid, LLViewerRegion* region, S32 amount, BOOL is_group = FALSE,
+bool can_afford_transaction(S32 cost);
+void give_money(const LLUUID& uuid, LLViewerRegion* region, S32 amount, bool is_group = false,
                 S32 trx_type = TRANS_GIFT, const std::string& desc = LLStringUtil::null);
 void send_join_group_response(LLUUID group_id,
                               LLUUID transaction_id,
@@ -81,7 +81,7 @@ void process_script_question(LLMessageSystem *msg, void **user_data);
 void process_chat_from_simulator(LLMessageSystem *mesgsys, void **user_data);
 
 //void process_agent_to_new_region(LLMessageSystem *mesgsys, void **user_data);
-void send_agent_update(BOOL force_send, BOOL send_reliable = FALSE);
+void send_agent_update(bool force_send, bool send_reliable = false);
 void process_object_update(LLMessageSystem *mesgsys, void **user_data);
 void process_compressed_object_update(LLMessageSystem *mesgsys, void **user_data);
 void process_cached_object_update(LLMessageSystem *mesgsys, void **user_data);
@@ -117,7 +117,7 @@ void process_adjust_balance(LLMessageSystem* msg_system, void**);
 bool attempt_standard_notification(LLMessageSystem* msg);
 void process_alert_message(LLMessageSystem* msg, void**);
 void process_agent_alert_message(LLMessageSystem* msgsystem, void** user_data);
-void process_alert_core(const std::string& message, BOOL modal);
+void process_alert_core(const std::string& message, bool modal);
 
 // "Mean" or player-vs-player abuse
 typedef std::list<LLMeanCollisionData*> mean_collision_list_t;
@@ -236,8 +236,8 @@ public:
     static std::string mResponderType;
     EInstantMessage mIM;
     LLUUID mFromID;
-    BOOL mFromGroup;
-    BOOL mFromObject;
+    bool mFromGroup;
+    bool mFromObject;
     LLUUID mTransactionID;
     LLUUID mFolderID;
     LLUUID mObjectID;
diff --git a/indra/newview/llviewerobject.cpp b/indra/newview/llviewerobject.cpp
index 26c8483223..99a77c5551 100644
--- a/indra/newview/llviewerobject.cpp
+++ b/indra/newview/llviewerobject.cpp
@@ -107,22 +107,23 @@
 #include "llmeshrepository.h"
 #include "llgltfmateriallist.h"
 #include "llgl.h"
+#include "gltf/asset.h"
 
 //#define DEBUG_UPDATE_TYPE
 
-BOOL        LLViewerObject::sVelocityInterpolate = TRUE;
-BOOL        LLViewerObject::sPingInterpolate = TRUE;
+bool        LLViewerObject::sVelocityInterpolate = true;
+bool        LLViewerObject::sPingInterpolate = true;
 
 U32         LLViewerObject::sNumZombieObjects = 0;
 S32         LLViewerObject::sNumObjects = 0;
-BOOL        LLViewerObject::sMapDebug = TRUE;
+bool        LLViewerObject::sMapDebug = true;
 LLColor4    LLViewerObject::sEditSelectColor(   1.0f, 1.f, 0.f, 0.3f);  // Edit OK
 LLColor4    LLViewerObject::sNoEditSelectColor( 1.0f, 0.f, 0.f, 0.3f);  // Can't edit
 S32         LLViewerObject::sAxisArrowLength(50);
 
 
-BOOL        LLViewerObject::sPulseEnabled(FALSE);
-BOOL        LLViewerObject::sUseSharedDrawables(FALSE); // TRUE
+bool        LLViewerObject::sPulseEnabled(false);
+bool        LLViewerObject::sUseSharedDrawables(false); // true
 
 // sMaxUpdateInterpolationTime must be greater than sPhaseOutUpdateInterpolationTime
 F64Seconds  LLViewerObject::sMaxUpdateInterpolationTime(3.0);       // For motion interpolation: after X seconds with no updates, don't predict object motion
@@ -246,7 +247,7 @@ LLViewerObject *LLViewerObject::createObject(const LLUUID &id, const LLPCode pco
     return res;
 }
 
-LLViewerObject::LLViewerObject(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp, BOOL is_global)
+LLViewerObject::LLViewerObject(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp, bool is_global)
 :   LLPrimitive(),
     mChildList(),
     mID(id),
@@ -256,7 +257,7 @@ LLViewerObject::LLViewerObject(const LLUUID &id, const LLPCode pcode, LLViewerRe
     mTEImages(NULL),
     mTENormalMaps(NULL),
     mTESpecularMaps(NULL),
-    mbCanSelect(TRUE),
+    mbCanSelect(true),
     mFlags(0),
     mPhysicsShapeType(0),
     mPhysicsGravity(0),
@@ -264,8 +265,8 @@ LLViewerObject::LLViewerObject(const LLUUID &id, const LLPCode pcode, LLViewerRe
     mPhysicsDensity(0),
     mPhysicsRestitution(0),
     mDrawable(),
-    mCreateSelected(FALSE),
-    mRenderMedia(FALSE),
+    mCreateSelected(false),
+    mRenderMedia(false),
     mBestUpdatePrecision(0),
     mText(),
     mHudText(""),
@@ -286,14 +287,14 @@ LLViewerObject::LLViewerObject(const LLUUID &id, const LLPCode pcode, LLViewerRe
     mExpectedInventorySerialNum(0),
     mInvRequestState(INVENTORY_REQUEST_STOPPED),
     mInvRequestXFerId(0),
-    mInventoryDirty(FALSE),
+    mInventoryDirty(false),
     mRegionp(regionp),
-    mDead(FALSE),
-    mOrphaned(FALSE),
-    mUserSelected(FALSE),
-    mOnActiveList(FALSE),
-    mOnMap(FALSE),
-    mStatic(FALSE),
+    mDead(false),
+    mOrphaned(false),
+    mUserSelected(false),
+    mOnActiveList(false),
+    mOnMap(false),
+    mStatic(false),
     mSeatCount(0),
     mNumFaces(0),
     mRotTime(0.f),
@@ -310,7 +311,7 @@ LLViewerObject::LLViewerObject(const LLUUID &id, const LLPCode pcode, LLViewerRe
     mPhysicsShapeUnknown(true),
     mAttachmentItemID(LLUUID::null),
     mLastUpdateType(OUT_UNKNOWN),
-    mLastUpdateCached(FALSE),
+    mLastUpdateCached(false),
     mCachedMuteListUpdateTime(0),
     mCachedOwnerInMuteList(false),
     mRiggedAttachedWarned(false)
@@ -447,7 +448,7 @@ void LLViewerObject::markDead()
         }
 
         // Mark itself as dead
-        mDead = TRUE;
+        mDead = true;
         if(mRegionp)
         {
             mRegionp->removeFromCreatedList(getLocalID());
@@ -751,7 +752,7 @@ void LLViewerObject::setNameValueList(const std::string& name_value_list)
     }
 }
 
-BOOL LLViewerObject::isAnySelected() const
+bool LLViewerObject::isAnySelected() const
 {
     bool any_selected = isSelected();
     for (child_list_t::const_iterator iter = mChildList.begin();
@@ -763,7 +764,7 @@ BOOL LLViewerObject::isAnySelected() const
     return any_selected;
 }
 
-void LLViewerObject::setSelected(BOOL sel)
+void LLViewerObject::setSelected(bool sel)
 {
     mUserSelected = sel;
     resetRot();
@@ -900,12 +901,12 @@ bool LLViewerObject::crossesParcelBounds()
     return mRegionp && mRegionp->objectsCrossParcel(boxes);
 }
 
-BOOL LLViewerObject::setParent(LLViewerObject* parent)
+bool LLViewerObject::setParent(LLViewerObject* parent)
 {
     if(mParent != parent)
     {
         LLViewerObject* old_parent = (LLViewerObject*)mParent ;
-        BOOL ret = LLPrimitive::setParent(parent);
+        bool ret = LLPrimitive::setParent(parent);
         if(ret && old_parent && parent)
         {
             old_parent->removeChild(this) ;
@@ -913,7 +914,7 @@ BOOL LLViewerObject::setParent(LLViewerObject* parent)
         return ret ;
     }
 
-    return FALSE ;
+    return false ;
 }
 
 void LLViewerObject::addChild(LLViewerObject *childp)
@@ -981,7 +982,7 @@ void LLViewerObject::removeChild(LLViewerObject *childp)
     if (childp->isSelected())
     {
         LLSelectMgr::getInstance()->deselectObjectAndFamily(childp);
-        BOOL add_to_end = TRUE;
+        bool add_to_end = true;
         LLSelectMgr::getInstance()->selectObjectAndFamily(childp, add_to_end);
     }
 }
@@ -1019,35 +1020,35 @@ void LLViewerObject::addThisAndNonJointChildren(std::vector<LLViewerObject*>& ob
     }
 }
 
-BOOL LLViewerObject::isChild(LLViewerObject *childp) const
+bool LLViewerObject::isChild(LLViewerObject *childp) const
 {
     for (child_list_t::const_iterator iter = mChildList.begin();
          iter != mChildList.end(); iter++)
     {
         LLViewerObject* testchild = *iter;
         if (testchild == childp)
-            return TRUE;
+            return true;
     }
-    return FALSE;
+    return false;
 }
 
-// returns TRUE if at least one avatar is sitting on this object
-BOOL LLViewerObject::isSeat() const
+// returns true if at least one avatar is sitting on this object
+bool LLViewerObject::isSeat() const
 {
     return mSeatCount > 0;
 }
 
-BOOL LLViewerObject::setDrawableParent(LLDrawable* parentp)
+bool LLViewerObject::setDrawableParent(LLDrawable* parentp)
 {
     if (mDrawable.isNull())
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL ret = mDrawable->mXform.setParent(parentp ? &parentp->mXform : NULL);
+    bool ret = mDrawable->mXform.setParent(parentp ? &parentp->mXform : NULL);
     if(!ret)
     {
-        return FALSE ;
+        return false ;
     }
     LLDrawable* old_parent = mDrawable->mParent;
     mDrawable->mParent = parentp;
@@ -1063,11 +1064,11 @@ BOOL LLViewerObject::setDrawableParent(LLDrawable* parentp)
         || (parentp && parentp->isActive()))
     {
         // *TODO we should not be relying on setDrawable parent to call markMoved
-        gPipeline.markMoved(mDrawable, FALSE);
+        gPipeline.markMoved(mDrawable, false);
     }
     else if (!mDrawable->isAvatar())
     {
-        mDrawable->updateXform(TRUE);
+        mDrawable->updateXform(true);
         /*if (!mDrawable->getSpatialGroup())
         {
             mDrawable->movePartition();
@@ -1078,7 +1079,7 @@ BOOL LLViewerObject::setDrawableParent(LLDrawable* parentp)
 }
 
 // Show or hide particles, icon and HUD
-void LLViewerObject::hideExtraDisplayItems( BOOL hidden )
+void LLViewerObject::hideExtraDisplayItems( bool hidden )
 {
     if( mPartSourcep.notNull() )
     {
@@ -1108,7 +1109,7 @@ U32 LLViewerObject::checkMediaURL(const std::string &media_url)
         mMedia = new LLViewerObjectMedia;
         mMedia->mMediaURL = media_url;
         mMedia->mMediaType = LLViewerObject::MEDIA_SET;
-        mMedia->mPassedWhitelist = FALSE;
+        mMedia->mPassedWhitelist = false;
     }
     else if (mMedia)
     {
@@ -1130,7 +1131,7 @@ U32 LLViewerObject::checkMediaURL(const std::string &media_url)
                 retval |= MEDIA_URL_UPDATED;
             }
             mMedia->mMediaURL = media_url;
-            mMedia->mPassedWhitelist = FALSE;
+            mMedia->mPassedWhitelist = false;
         }
     }
     return retval;
@@ -1166,6 +1167,20 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
     LL_DEBUGS("ObjectUpdate") << " mesgsys " << mesgsys << " dp " << dp << " id " << getID() << " update_type " << (S32) update_type << LL_ENDL;
     dumpStack("ObjectUpdateStack");
 
+    // The new OBJECTDATA_FIELD_SIZE_124, OBJECTDATA_FIELD_SIZE_140, OBJECTDATA_FIELD_SIZE_80
+    // and OBJECTDATA_FIELD_SIZE_64 lengths should be supported in the existing cases below.
+    // Each case should start at the beginning of the buffer and extract all known
+    // values, and ignore any unknown data at the end of the buffer.
+    // This allows new data in the future without breaking current viewers.
+    const S32 OBJECTDATA_FIELD_SIZE_140 = 140;  // Full precision avatar update for future extended data
+    const S32 OBJECTDATA_FIELD_SIZE_124 = 124;  // Full precision object update for future extended data
+    const S32 OBJECTDATA_FIELD_SIZE_76  =  76;  // Full precision avatar update
+    const S32 OBJECTDATA_FIELD_SIZE_60  =  60;  // Full precision object update
+    const S32 OBJECTDATA_FIELD_SIZE_80 =   80;  // Terse avatar update, 16 bit precision for future extended data
+    const S32 OBJECTDATA_FIELD_SIZE_64  =  64;  // Terse object update, 16 bit precision for future extended data
+    const S32 OBJECTDATA_FIELD_SIZE_48  =  48;  // Terse avatar update, 16 bit precision
+    const S32 OBJECTDATA_FIELD_SIZE_32  =  32;  // Terse object update, 16 bit precision
+
     U32 retval = 0x0;
 
     // If region is removed from the list it is also deleted.
@@ -1213,7 +1228,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
         U32 x, y;
         from_region_handle(region_handle, &x, &y);
 
-        LL_ERRS() << "Object has invalid region " << x << ":" << y << "!" << LL_ENDL;
+        LL_WARNS("UpdateFail") << "Object has invalid region " << x << ":" << y << "!" << LL_ENDL;
         return retval;
     }
 
@@ -1240,8 +1255,8 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
     const F32 size = LLWorld::getInstance()->getRegionWidthInMeters();
     const F32 MAX_HEIGHT = LLWorld::getInstance()->getRegionMaxHeight();
     const F32 MIN_HEIGHT = LLWorld::getInstance()->getRegionMinHeight();
-    S32 length;
-    S32 count;
+    S32 length = 0;
+    S32 count = 0;
     S32 this_update_precision = 32;     // in bits
 
     // Temporaries, because we need to compare w/ previous to set dirty flags...
@@ -1302,6 +1317,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                 mesgsys->getVector3Fast(_PREHASH_ObjectData, _PREHASH_Scale, new_scale, block_num );
                 length = mesgsys->getSizeFast(_PREHASH_ObjectData, block_num, _PREHASH_ObjectData);
                 mesgsys->getBinaryDataFast(_PREHASH_ObjectData, _PREHASH_ObjectData, data, length, block_num, MAX_OBJECT_BINARY_DATA_SIZE);
+                length = llmin(length, MAX_OBJECT_BINARY_DATA_SIZE);  // getBinaryDataFast() safely fills the buffer to max_size
 
                 mTotalCRC = crc;
                 // Might need to update mSourceMuted here to properly pick up new radius
@@ -1316,7 +1332,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                     setMaterial(material);
                     if (mDrawable.notNull())
                     {
-                        gPipeline.markMoved(mDrawable, FALSE); // undamped
+                        gPipeline.markMoved(mDrawable, false); // undamped
                     }
                 }
                 setClickAction(click_action);
@@ -1326,15 +1342,17 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 
                 switch(length)
                 {
-                case (60 + 16):
+                case OBJECTDATA_FIELD_SIZE_140:
+                case OBJECTDATA_FIELD_SIZE_76:
                     // pull out collision normal for avatar
                     htolememcpy(collision_plane.mV, &data[count], MVT_LLVector4, sizeof(LLVector4));
                     ((LLVOAvatar*)this)->setFootPlane(collision_plane);
                     count += sizeof(LLVector4);
-                    // fall through
-                case 60:
+
+                case OBJECTDATA_FIELD_SIZE_124:
+                case OBJECTDATA_FIELD_SIZE_60:
                     this_update_precision = 32;
-                    // this is a terse update
+                    // this is a full precision update
                     // pos
                     htolememcpy(new_pos_parent.mV, &data[count], MVT_LLVector3, sizeof(LLVector3));
                     count += sizeof(LLVector3);
@@ -1359,117 +1377,21 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                         resetRot();
                     }
                     setAngularVelocity(new_angv);
+                    count += sizeof(LLVector3);
 #if LL_DARWIN
-                    if (length == 76)
+                    if (length == OBJECTDATA_FIELD_SIZE_76 ||
+                        length == OBJECTDATA_FIELD_SIZE_140)
                     {
                         setAngularVelocity(LLVector3::zero);
                     }
 #endif
                     break;
-                case(32 + 16):
-                    // pull out collision normal for avatar
-                    htolememcpy(collision_plane.mV, &data[count], MVT_LLVector4, sizeof(LLVector4));
-                    ((LLVOAvatar*)this)->setFootPlane(collision_plane);
-                    count += sizeof(LLVector4);
-                    // fall through
-                case 32:
-                    this_update_precision = 16;
-                    test_pos_parent.quantize16(-0.5f*size, 1.5f*size, MIN_HEIGHT, MAX_HEIGHT);
-
-                    // This is a terse 16 update, so treat data as an array of U16's.
-#ifdef LL_BIG_ENDIAN
-                    htolememcpy(valswizzle, &data[count], MVT_U16Vec3, 6);
-                    val = valswizzle;
-#else
-                    val = (U16 *) &data[count];
-#endif
-                    count += sizeof(U16)*3;
-                    new_pos_parent.mV[VX] = U16_to_F32(val[VX], -0.5f*size, 1.5f*size);
-                    new_pos_parent.mV[VY] = U16_to_F32(val[VY], -0.5f*size, 1.5f*size);
-                    new_pos_parent.mV[VZ] = U16_to_F32(val[VZ], MIN_HEIGHT, MAX_HEIGHT);
-
-#ifdef LL_BIG_ENDIAN
-                    htolememcpy(valswizzle, &data[count], MVT_U16Vec3, 6);
-                    val = valswizzle;
-#else
-                    val = (U16 *) &data[count];
-#endif
-                    count += sizeof(U16)*3;
-                    setVelocity(LLVector3(U16_to_F32(val[VX], -size, size),
-                                                       U16_to_F32(val[VY], -size, size),
-                                                       U16_to_F32(val[VZ], -size, size)));
-
-#ifdef LL_BIG_ENDIAN
-                    htolememcpy(valswizzle, &data[count], MVT_U16Vec3, 6);
-                    val = valswizzle;
-#else
-                    val = (U16 *) &data[count];
-#endif
-                    count += sizeof(U16)*3;
-                    setAcceleration(LLVector3(U16_to_F32(val[VX], -size, size),
-                                                           U16_to_F32(val[VY], -size, size),
-                                                           U16_to_F32(val[VZ], -size, size)));
-
-#ifdef LL_BIG_ENDIAN
-                    htolememcpy(valswizzle, &data[count], MVT_U16Quat, 4);
-                    val = valswizzle;
-#else
-                    val = (U16 *) &data[count];
-#endif
-                    count += sizeof(U16)*4;
-                    new_rot.mQ[VX] = U16_to_F32(val[VX], -1.f, 1.f);
-                    new_rot.mQ[VY] = U16_to_F32(val[VY], -1.f, 1.f);
-                    new_rot.mQ[VZ] = U16_to_F32(val[VZ], -1.f, 1.f);
-                    new_rot.mQ[VW] = U16_to_F32(val[VW], -1.f, 1.f);
-
-#ifdef LL_BIG_ENDIAN
-                    htolememcpy(valswizzle, &data[count], MVT_U16Vec3, 6);
-                    val = valswizzle;
-#else
-                    val = (U16 *) &data[count];
-#endif
-                    new_angv.setVec(U16_to_F32(val[VX], -size, size),
-                                        U16_to_F32(val[VY], -size, size),
-                                        U16_to_F32(val[VZ], -size, size));
-                    if (new_angv.isExactlyZero())
-                    {
-                        // reset rotation time
-                        resetRot();
-                    }
-                    setAngularVelocity(new_angv);
-                    break;
 
-                case 16:
-                    this_update_precision = 8;
-                    test_pos_parent.quantize8(-0.5f*size, 1.5f*size, MIN_HEIGHT, MAX_HEIGHT);
-                    // this is a terse 8 update
-                    new_pos_parent.mV[VX] = U8_to_F32(data[0], -0.5f*size, 1.5f*size);
-                    new_pos_parent.mV[VY] = U8_to_F32(data[1], -0.5f*size, 1.5f*size);
-                    new_pos_parent.mV[VZ] = U8_to_F32(data[2], MIN_HEIGHT, MAX_HEIGHT);
-
-                    setVelocity(U8_to_F32(data[3], -size, size),
-                                U8_to_F32(data[4], -size, size),
-                                U8_to_F32(data[5], -size, size) );
-
-                    setAcceleration(U8_to_F32(data[6], -size, size),
-                                    U8_to_F32(data[7], -size, size),
-                                    U8_to_F32(data[8], -size, size) );
-
-                    new_rot.mQ[VX] = U8_to_F32(data[9], -1.f, 1.f);
-                    new_rot.mQ[VY] = U8_to_F32(data[10], -1.f, 1.f);
-                    new_rot.mQ[VZ] = U8_to_F32(data[11], -1.f, 1.f);
-                    new_rot.mQ[VW] = U8_to_F32(data[12], -1.f, 1.f);
-
-                    new_angv.setVec(U8_to_F32(data[13], -size, size),
-                                        U8_to_F32(data[14], -size, size),
-                                        U8_to_F32(data[15], -size, size) );
-                    if (new_angv.isExactlyZero())
-                    {
-                        // reset rotation time
-                        resetRot();
-                    }
-                    setAngularVelocity(new_angv);
-                    break;
+                // length values 48, 32 and 16 were once in viewer code but
+                //   are never sent by the SL simulator
+                default:
+                    LL_WARNS("UpdateFail") << "Unexpected ObjectData buffer size " << length
+                        << " for " << getID() << " with OUT_FULL message" << LL_ENDL;
                 }
 
                 ////////////////////////////////////////////////////
@@ -1503,19 +1425,44 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                 if (mData)
                 {
                     delete [] mData;
+                    mData = NULL;
                 }
 
+                // Dec 2023 new generic data:
+                //    Trees work as before, this field contains genome data
+                //    Not a tree:  root objects send 1 byte with the number of
+                //      total prims in the linkset
+                //    If the generic data size is zero, then number of prims is 1
+                //
+                // Viewers should not check for specific data sizes exactly, but if
+                // the field has data, process it from the start and ignore the remainder.
+
                 // Check for appended generic data
+                const S32 GENERIC_DATA_BUFFER_SIZE = 16;
                 S32 data_size = mesgsys->getSizeFast(_PREHASH_ObjectData, block_num, _PREHASH_Data);
-                if (data_size <= 0)
-                {
-                    mData = NULL;
-                }
-                else
-                {
-                    // ...has generic data
-                    mData = new U8[data_size];
-                    mesgsys->getBinaryDataFast(_PREHASH_ObjectData, _PREHASH_Data, mData, data_size, block_num);
+                if (data_size > 0)
+                {    // has generic data
+                    if (getPCode() == LL_PCODE_LEGACY_TREE || getPCode() == LL_PCODE_TREE_NEW)
+                    {
+                        mData = new U8[data_size];
+                        mesgsys->getBinaryDataFast(_PREHASH_ObjectData, _PREHASH_Data, mData, data_size, block_num);
+                        LL_DEBUGS("NewObjectData") << "Read " << data_size << " bytes tree genome data for " << getID() << ", pcode "
+                                             << getPCodeString() << ", value " << (S32) mData[0] << LL_ENDL;
+                    }
+                    else
+                    {   // Extract number of prims
+                        U8 generic_data[GENERIC_DATA_BUFFER_SIZE];
+                        mesgsys->getBinaryDataFast(_PREHASH_ObjectData, _PREHASH_Data,
+                            &generic_data[0], llmin(data_size, GENERIC_DATA_BUFFER_SIZE), block_num);
+                        // This is sample code to extract the number of prims
+                        //    Future viewers should use it for their own purposes
+                        if (!isAvatar())
+                        {
+                            S32 num_prims = (S32) generic_data[0];
+                            LL_DEBUGS("NewObjectData") << "Root prim " << getID() << " has "
+                                << num_prims << " prims in linkset" << LL_ENDL;
+                        }
+                    }
                 }
 
                 S32 text_size = mesgsys->getSizeFast(_PREHASH_ObjectData, block_num, _PREHASH_Text);
@@ -1567,7 +1514,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                 std::unordered_map<U16, ExtraParameter*>::iterator iter;
                 for (iter = mExtraParameterList.begin(); iter != mExtraParameterList.end(); ++iter)
                 {
-                    iter->second->in_use = FALSE;
+                    iter->second->in_use = false;
                 }
 
                 // Unpack extra parameters
@@ -1599,7 +1546,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                     if (!iter->second->in_use)
                     {
                         // Send an update message in case it was formerly in use
-                        parameterChanged(iter->first, iter->second->data, FALSE, false);
+                        parameterChanged(iter->first, iter->second->data, false, false);
                     }
                 }
 
@@ -1613,59 +1560,22 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 #endif
                 length = mesgsys->getSizeFast(_PREHASH_ObjectData, block_num, _PREHASH_ObjectData);
                 mesgsys->getBinaryDataFast(_PREHASH_ObjectData, _PREHASH_ObjectData, data, length, block_num, MAX_OBJECT_BINARY_DATA_SIZE);
-                count = 0;
+                length = llmin(length, MAX_OBJECT_BINARY_DATA_SIZE);    // getBinaryDataFast() safely fills the buffer to max_size
+                count  = 0;
                 LLVector4 collision_plane;
 
                 switch(length)
                 {
-                case(60 + 16):
+                    case OBJECTDATA_FIELD_SIZE_80:
+                    case OBJECTDATA_FIELD_SIZE_48:
                     // pull out collision normal for avatar
                     htolememcpy(collision_plane.mV, &data[count], MVT_LLVector4, sizeof(LLVector4));
                     ((LLVOAvatar*)this)->setFootPlane(collision_plane);
                     count += sizeof(LLVector4);
-                    // fall through
-                case 60:
-                    // this is a terse 32 update
-                    // pos
-                    this_update_precision = 32;
-                    htolememcpy(new_pos_parent.mV, &data[count], MVT_LLVector3, sizeof(LLVector3));
-                    count += sizeof(LLVector3);
-                    // vel
-                    htolememcpy((void*)getVelocity().mV, &data[count], MVT_LLVector3, sizeof(LLVector3));
-                    count += sizeof(LLVector3);
-                    // acc
-                    htolememcpy((void*)getAcceleration().mV, &data[count], MVT_LLVector3, sizeof(LLVector3));
-                    count += sizeof(LLVector3);
-                    // theta
-                    {
-                        LLVector3 vec;
-                        htolememcpy(vec.mV, &data[count], MVT_LLVector3, sizeof(LLVector3));
-                        new_rot.unpackFromVector3(vec);
-                    }
-                    count += sizeof(LLVector3);
-                    // omega
-                    htolememcpy((void*)new_angv.mV, &data[count], MVT_LLVector3, sizeof(LLVector3));
-                    if (new_angv.isExactlyZero())
-                    {
-                        // reset rotation time
-                        resetRot();
-                    }
-                    setAngularVelocity(new_angv);
-#if LL_DARWIN
-                    if (length == 76)
-                    {
-                        setAngularVelocity(LLVector3::zero);
-                    }
-#endif
-                    break;
-                case(32 + 16):
-                    // pull out collision normal for avatar
-                    htolememcpy(collision_plane.mV, &data[count], MVT_LLVector4, sizeof(LLVector4));
-                    ((LLVOAvatar*)this)->setFootPlane(collision_plane);
-                    count += sizeof(LLVector4);
-                    // fall through
-                case 32:
-                    // this is a terse 16 update
+
+                case OBJECTDATA_FIELD_SIZE_64:
+                case OBJECTDATA_FIELD_SIZE_32:
+                    // this is a terse 16 bit quantized update
                     this_update_precision = 16;
                     test_pos_parent.quantize16(-0.5f*size, 1.5f*size, MIN_HEIGHT, MAX_HEIGHT);
 
@@ -1726,32 +1636,13 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                     setAngularVelocity(new_angv);
                     break;
 
-                case 16:
-                    // this is a terse 8 update
-                    this_update_precision = 8;
-                    test_pos_parent.quantize8(-0.5f*size, 1.5f*size, MIN_HEIGHT, MAX_HEIGHT);
-                    new_pos_parent.mV[VX] = U8_to_F32(data[0], -0.5f*size, 1.5f*size);
-                    new_pos_parent.mV[VY] = U8_to_F32(data[1], -0.5f*size, 1.5f*size);
-                    new_pos_parent.mV[VZ] = U8_to_F32(data[2], MIN_HEIGHT, MAX_HEIGHT);
-
-                    setVelocity(U8_to_F32(data[3], -size, size),
-                                U8_to_F32(data[4], -size, size),
-                                U8_to_F32(data[5], -size, size) );
-
-                    setAcceleration(U8_to_F32(data[6], -size, size),
-                                    U8_to_F32(data[7], -size, size),
-                                    U8_to_F32(data[8], -size, size) );
-
-                    new_rot.mQ[VX] = U8_to_F32(data[9], -1.f, 1.f);
-                    new_rot.mQ[VY] = U8_to_F32(data[10], -1.f, 1.f);
-                    new_rot.mQ[VZ] = U8_to_F32(data[11], -1.f, 1.f);
-                    new_rot.mQ[VW] = U8_to_F32(data[12], -1.f, 1.f);
-
-                    new_angv.set(U8_to_F32(data[13], -size, size),
-                                        U8_to_F32(data[14], -size, size),
-                                        U8_to_F32(data[15], -size, size) );
-                    setAngularVelocity(new_angv);
-                    break;
+                // Previous viewers had code for length 76, 60 or 16 byte length
+                // with full precision or 8 bit quanitzation, but the
+                // SL servers will never send those data formats.  If you ever see this
+                // warning in Second Life, please file a bug report
+                default:
+                    LL_WARNS("UpdateFail") << "Unexpected ObjectData buffer size " << length << " for " << getID()
+                                           << " with OUT_FULL message" << LL_ENDL;
                 }
 
                 U8 state;
@@ -1761,13 +1652,13 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
             }
 
         default:
+            LL_WARNS("UpdateFail") << "Unknown uncompressed update type " << update_type << " for " << getID() << LL_ENDL;
             break;
-
         }
     }
     else
     {
-        // handle the compressed case
+        // handle the compressed case - have dp datapacker
         LLUUID sound_uuid;
         LLUUID  owner_id;
         F32    gain = 0;
@@ -1850,7 +1741,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                     setMaterial(material);
                     if (mDrawable.notNull())
                     {
-                        gPipeline.markMoved(mDrawable, FALSE); // undamped
+                        gPipeline.markMoved(mDrawable, false); // undamped
                     }
                 }
                 dp->unpackU8(click_action, "ClickAction");
@@ -1960,7 +1851,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                 std::unordered_map<U16, ExtraParameter*>::iterator iter;
                 for (iter = mExtraParameterList.begin(); iter != mExtraParameterList.end(); ++iter)
                 {
-                    iter->second->in_use = FALSE;
+                    iter->second->in_use = false;
                 }
 
                 // Unpack extra params
@@ -1983,7 +1874,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                     if (!iter->second->in_use)
                     {
                         // Send an update message in case it was formerly in use
-                        parameterChanged(iter->first, iter->second->data, FALSE, false);
+                        parameterChanged(iter->first, iter->second->data, false, false);
                     }
                 }
 
@@ -2022,6 +1913,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
             break;
 
         default:
+            LL_WARNS("UpdateFail") << "Unknown compressed update type " << update_type << " for " << getID() << LL_ENDL;
             break;
         }
     }
@@ -2029,7 +1921,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
     //
     // Fix object parenting.
     //
-    BOOL b_changed_status = FALSE;
+    bool b_changed_status = false;
 
     if (OUT_TERSE_IMPROVED != update_type)
     {
@@ -2069,7 +1961,8 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                 if (sent_parentp && sent_parentp->getParent() == this)
                 {
                     // Try to recover if we attempt to attach a parent to its child
-                    LL_WARNS() << "Attempt to attach a parent to it's child: " << this->getID() << " to " << sent_parentp->getID() << LL_ENDL;
+                    LL_WARNS("UpdateFail") << "Attempt to attach a parent to it's child: " << this->getID() << " to "
+                                           << sent_parentp->getID() << LL_ENDL;
                     this->removeChild(sent_parentp);
                     sent_parentp->setDrawableParent(NULL);
                 }
@@ -2087,13 +1980,13 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                     //
 
                     // new parent is valid
-                    b_changed_status = TRUE;
+                    b_changed_status = true;
                     // ...no current parent, so don't try to remove child
                     if (mDrawable.notNull())
                     {
                         if (mDrawable->isDead() || !mDrawable->getVObj())
                         {
-                            LL_WARNS() << "Drawable is dead or no VObj!" << LL_ENDL;
+                            LL_WARNS("UpdateFail") << "Drawable is dead or no VObj!" << LL_ENDL;
                             sent_parentp->addChild(this);
                         }
                         else
@@ -2103,9 +1996,9 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                                 // Bad, we got a cycle somehow.
                                 // Kill both the parent and the child, and
                                 // set cache misses for both of them.
-                                LL_WARNS() << "Attempting to recover from parenting cycle!" << LL_ENDL;
-                                LL_WARNS() << "Killing " << sent_parentp->getID() << " and " << getID() << LL_ENDL;
-                                LL_WARNS() << "Adding to cache miss list" << LL_ENDL;
+                                LL_WARNS("UpdateFail") << "Attempting to recover from parenting cycle!  "
+                                            << "Killing " << sent_parentp->getID() << " and " << getID()
+                                            << ", Adding to cache miss list" << LL_ENDL;
                                 setParent(NULL);
                                 sent_parentp->setParent(NULL);
                                 getRegion()->addCacheMissFull(getLocalID());
@@ -2118,7 +2011,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                             // make sure this object gets a non-damped update
                             if (sent_parentp->mDrawable.notNull())
                             {
-                                gPipeline.markMoved(sent_parentp->mDrawable, FALSE); // undamped
+                                gPipeline.markMoved(sent_parentp->mDrawable, false); // undamped
                             }
                         }
                     }
@@ -2128,7 +2021,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                     }
 
                     // Show particles, icon and HUD
-                    hideExtraDisplayItems( FALSE );
+                    hideExtraDisplayItems( false );
 
                     setChanged(MOVED | SILHOUETTE);
                 }
@@ -2155,7 +2048,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                     gObjectList.orphanize(this, parent_id, ip, port);
 
                     // Hide particles, icon and HUD
-                    hideExtraDisplayItems( TRUE );
+                    hideExtraDisplayItems( true );
                 }
             }
         }
@@ -2246,7 +2139,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                 if (sent_parentp && sent_parentp != cur_parentp && sent_parentp != this)
                 {
                     // New parent is valid, detach and reattach
-                    b_changed_status = TRUE;
+                    b_changed_status = true;
                     if (mDrawable.notNull())
                     {
                         if (!setDrawableParent(sent_parentp->mDrawable)) // LLViewerObject::processUpdateMessage 2
@@ -2273,7 +2166,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                     sent_parentp->setChanged(MOVED | SILHOUETTE);
                     if (sent_parentp->mDrawable.notNull())
                     {
-                        gPipeline.markMoved(sent_parentp->mDrawable, FALSE); // undamped
+                        gPipeline.markMoved(sent_parentp->mDrawable, false); // undamped
                     }
                 }
                 else if (!sent_parentp)
@@ -2295,7 +2188,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 
                     if (remove_parent)
                     {
-                        b_changed_status = TRUE;
+                        b_changed_status = true;
                         if (mDrawable.notNull())
                         {
                             // clear parent to removeChild can put the drawable on the damped list
@@ -2309,7 +2202,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
                         if (mDrawable.notNull())
                         {
                             // make sure this object gets a non-damped update
-                            gPipeline.markMoved(mDrawable, FALSE); // undamped
+                            gPipeline.markMoved(mDrawable, false); // undamped
                         }
                     }
                 }
@@ -2458,11 +2351,11 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
         (MAG_CUTOFF >= accel_mag_sq) &&
         (MAG_CUTOFF >= getAngularVelocity().magVecSquared()))
     {
-        mStatic = TRUE; // This object doesn't move!
+        mStatic = true; // This object doesn't move!
     }
     else
     {
-        mStatic = FALSE;
+        mStatic = false;
     }
 
 // BUG: This code leads to problems during group rotate and any scale operation.
@@ -2477,7 +2370,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
 //
     // Additionally, if any child is selected, need to update the dialogs and selection
     // center.
-    BOOL needs_refresh = mUserSelected;
+    bool needs_refresh = mUserSelected;
     for (child_list_t::iterator iter = mChildList.begin();
          iter != mChildList.end(); iter++)
     {
@@ -2485,7 +2378,7 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
         needs_refresh = needs_refresh || child->mUserSelected;
     }
 
-    static LLCachedControl<bool> allow_select_avatar(gSavedSettings, "AllowSelectAvatar", FALSE);
+    static LLCachedControl<bool> allow_select_avatar(gSavedSettings, "AllowSelectAvatar", false);
     if (needs_refresh)
     {
         LLSelectMgr::getInstance()->updateSelectionCenter();
@@ -2529,9 +2422,9 @@ U32 LLViewerObject::processUpdateMessage(LLMessageSystem *mesgsys,
     return retval;
 }
 
-BOOL LLViewerObject::isActive() const
+bool LLViewerObject::isActive() const
 {
-    return TRUE;
+    return true;
 }
 
 //load flags from cache or from message
@@ -2574,7 +2467,7 @@ void LLViewerObject::idleUpdate(LLAgent &agent, const F64 &frame_time)
             }
         }
 
-        updateDrawable(FALSE);
+        updateDrawable(false);
     }
 }
 
@@ -2760,22 +2653,6 @@ void LLViewerObject::interpolateLinearMotion(const F64SecondsImplicit& frame_tim
 
 
 
-BOOL LLViewerObject::setData(const U8 *datap, const U32 data_size)
-{
-    delete [] mData;
-
-    if (datap)
-    {
-        mData = new U8[data_size];
-        if (!mData)
-        {
-            return FALSE;
-        }
-        memcpy(mData, datap, data_size);        /* Flawfinder: ignore */
-    }
-    return TRUE;
-}
-
 // delete an item in the inventory, but don't tell the server. This is
 // used internally by remove, update, and savescript.
 // This will only delete the first item with an item_id in the list
@@ -2815,7 +2692,7 @@ void LLViewerObject::doUpdateInventory(
     LLUUID item_id;
     LLUUID new_owner;
     LLUUID new_group;
-    BOOL group_owned = FALSE;
+    bool group_owned = false;
     if(old_item)
     {
         item_id = old_item->getUUID();
@@ -2837,7 +2714,7 @@ void LLViewerObject::doUpdateInventory(
         deleteInventoryItem(item_id);
         LLPermissions perm(item->getPermissions());
         LLPermissions* obj_perm = LLSelectMgr::getInstance()->findObjectPermissions(this);
-        bool is_atomic = ((S32)LLAssetType::AT_OBJECT == item->getType()) ? false : true;
+        bool is_atomic = (S32)LLAssetType::AT_OBJECT != item->getType();
         if(obj_perm)
         {
             perm.setOwnerAndGroup(LLUUID::null, obj_perm->getOwner(), obj_perm->getGroup(), is_atomic);
@@ -2887,7 +2764,7 @@ void LLViewerObject::doUpdateInventory(
 // of the new and old script AFTER the bytecode has been saved.
 void LLViewerObject::saveScript(
     const LLViewerInventoryItem* item,
-    BOOL active,
+    bool active,
     bool is_new)
 {
     /*
@@ -2961,7 +2838,7 @@ void LLViewerObject::dirtyInventory()
         delete mInventory;
         mInventory = NULL;
     }
-    mInventoryDirty = TRUE;
+    mInventoryDirty = true;
 }
 
 void LLViewerObject::registerInventoryListener(LLVOInventoryListener* listener, void* user_data)
@@ -2990,7 +2867,7 @@ void LLViewerObject::removeInventoryListener(LLVOInventoryListener* listener)
     }
 }
 
-BOOL LLViewerObject::isInventoryPending()
+bool LLViewerObject::isInventoryPending()
 {
     return mInvRequestState != INVENTORY_REQUEST_STOPPED;
 }
@@ -3024,7 +2901,7 @@ void LLViewerObject::requestInventory()
     else
     {
         // since we are going to request it now
-        mInventoryDirty = FALSE;
+        mInventoryDirty = false;
 
         // Note: throws away duplicate requests
         fetchInventoryFromServer();
@@ -3419,7 +3296,7 @@ void LLViewerObject::processTaskInv(LLMessageSystem* msg, void** user_data)
         U64 new_id = gXferManager->requestFile(gDirUtilp->getExpandedFilename(LL_PATH_CACHE, ft->mFilename),
             ft->mFilename, LL_PATH_CACHE,
             object->mRegionp->getHost(),
-            TRUE,
+            true,
             &LLViewerObject::processTaskInvFile,
             (void**)ft, // This takes ownership of ft
             LLXferManager::HIGH_PRIORITY);
@@ -3496,7 +3373,7 @@ void LLViewerObject::processTaskInvFile(void** user_data, S32 error_code, LLExtS
     delete ft;
 }
 
-BOOL LLViewerObject::loadTaskInvFile(const std::string& filename)
+bool LLViewerObject::loadTaskInvFile(const std::string& filename)
 {
     std::string filename_and_local_path = gDirUtilp->getExpandedFilename(LL_PATH_CACHE, filename);
     llifstream ifs(filename_and_local_path.c_str());
@@ -3558,11 +3435,11 @@ BOOL LLViewerObject::loadTaskInvFile(const std::string& filename)
     {
         LL_WARNS() << "unable to load task inventory: " << filename_and_local_path
                 << LL_ENDL;
-        return FALSE;
+        return false;
     }
     doInventoryCallback();
 
-    return TRUE;
+    return true;
 }
 
 void LLViewerObject::loadTaskInvLLSD(const LLSD& inv_result)
@@ -3930,14 +3807,14 @@ void LLViewerObject::setPixelAreaAndAngle(LLAgent &agent)
     }
 }
 
-BOOL LLViewerObject::updateLOD()
+bool LLViewerObject::updateLOD()
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLViewerObject::updateGeometry(LLDrawable *drawable)
+bool LLViewerObject::updateGeometry(LLDrawable *drawable)
 {
-    return TRUE;
+    return true;
 }
 
 void LLViewerObject::updateGL()
@@ -3955,7 +3832,7 @@ LLDrawable* LLViewerObject::createDrawable(LLPipeline *pipeline)
     return NULL;
 }
 
-void LLViewerObject::setScale(const LLVector3 &scale, BOOL damped)
+void LLViewerObject::setScale(const LLVector3 &scale, bool damped)
 {
     LLPrimitive::setScale(scale);
     if (mDrawable.notNull())
@@ -3975,7 +3852,7 @@ void LLViewerObject::setScale(const LLVector3 &scale, BOOL damped)
                 llassert_always(LLWorld::getInstance()->getRegionFromHandle(getRegion()->getHandle()));
 
                 gObjectList.addToMap(this);
-                mOnMap = TRUE;
+                mOnMap = true;
             }
         }
         else
@@ -3983,7 +3860,7 @@ void LLViewerObject::setScale(const LLVector3 &scale, BOOL damped)
             if (mOnMap)
             {
                 gObjectList.removeFromMap(this);
-                mOnMap = FALSE;
+                mOnMap = false;
             }
         }
     }
@@ -4015,7 +3892,7 @@ void LLViewerObject::setLinksetCost(F32 cost)
     mLinksetCost = cost;
     mCostStale = false;
 
-    BOOL needs_refresh = isSelected();
+    bool needs_refresh = isSelected();
     child_list_t::iterator iter = mChildList.begin();
     while(iter != mChildList.end() && !needs_refresh)
     {
@@ -4111,15 +3988,15 @@ F32 LLViewerObject::recursiveGetEstTrianglesMax() const
 S32 LLViewerObject::getAnimatedObjectMaxTris() const
 {
     S32 max_tris = 0;
-    if (gAgent.getRegion())
-    {
-        LLSD features;
-        gAgent.getRegion()->getSimulatorFeatures(features);
-        if (features.has("AnimatedObjects"))
+        if (gAgent.getRegion())
         {
-            max_tris = features["AnimatedObjects"]["AnimatedObjectMaxTris"].asInteger();
+            LLSD features;
+            gAgent.getRegion()->getSimulatorFeatures(features);
+            if (features.has("AnimatedObjects"))
+            {
+                max_tris = features["AnimatedObjects"]["AnimatedObjectMaxTris"].asInteger();
+            }
         }
-    }
     return max_tris;
 }
 
@@ -4280,7 +4157,7 @@ void LLViewerObject::updateTextures()
 {
 }
 
-void LLViewerObject::boostTexturePriority(BOOL boost_children /* = TRUE */)
+void LLViewerObject::boostTexturePriority(bool boost_children /* = true */)
 {
     if (isDead() || !getVolume())
     {
@@ -4298,7 +4175,7 @@ void LLViewerObject::boostTexturePriority(BOOL boost_children /* = TRUE */)
     {
         LLSculptParams *sculpt_params = (LLSculptParams *)getParameterEntry(LLNetworkData::PARAMS_SCULPT);
         LLUUID sculpt_id = sculpt_params->getSculptTexture();
-        LLViewerTextureManager::getFetchedTexture(sculpt_id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE)->setBoostLevel(LLGLTexture::BOOST_SELECTED);
+        LLViewerTextureManager::getFetchedTexture(sculpt_id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE)->setBoostLevel(LLGLTexture::BOOST_SELECTED);
     }
 
     if (boost_children)
@@ -4391,7 +4268,7 @@ void LLViewerObject::addNVPair(const std::string& data)
     mNameValuePairs[nv->mName] = nv;
 }
 
-BOOL LLViewerObject::removeNVPair(const std::string& name)
+bool LLViewerObject::removeNVPair(const std::string& name)
 {
     char* canonical_name = gNVNameTable.addString(name);
 
@@ -4417,14 +4294,14 @@ BOOL LLViewerObject::removeNVPair(const std::string& name)
             // Remove the NV pair from the local list.
             delete nv;
             mNameValuePairs.erase(iter);
-            return TRUE;
+            return true;
         }
         else
         {
             LL_DEBUGS() << "removeNVPair - No region for object" << LL_ENDL;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -4510,7 +4387,7 @@ LLMatrix4a LLViewerObject::getGLTFAssetToAgentTransform() const
     LLMatrix4 root;
     root.initScale(getScale());
     root.rotate(getRenderRotation());
-    root.translate(getPositionAgent());
+    root.translate(getRenderPosition());
 
     LLMatrix4a mat;
     mat.loadu((F32*)root.mMatrix);
@@ -4534,7 +4411,7 @@ LLMatrix4a LLViewerObject::getAgentToGLTFAssetTransform() const
     scale.mV[1] = 1.f / scale.mV[1];
     scale.mV[2] = 1.f / scale.mV[2];
 
-    root.translate(-getPositionAgent());
+    root.translate(-getRenderPosition());
     root.rotate(~getRenderRotation());
 
     LLMatrix4 scale_mat;
@@ -4551,13 +4428,15 @@ LLMatrix4a LLViewerObject::getGLTFNodeTransformAgent(S32 node_index) const
 {
     LLMatrix4a mat;
 
-    if (mGLTFAsset.notNull() && node_index >= 0 && node_index < mGLTFAsset->mNodes.size())
+    if (mGLTFAsset && node_index >= 0 && node_index < mGLTFAsset->mNodes.size())
     {
         auto& node = mGLTFAsset->mNodes[node_index];
 
         LLMatrix4a asset_to_agent = getGLTFAssetToAgentTransform();
         LLMatrix4a node_to_agent;
-        matMul(node.mAssetMatrix, asset_to_agent, node_to_agent);
+        LLMatrix4a am;
+        am.loadu(glm::value_ptr(node.mAssetMatrix));
+        matMul(am, asset_to_agent, node_to_agent);
 
         mat = node_to_agent;
     }
@@ -4568,6 +4447,7 @@ LLMatrix4a LLViewerObject::getGLTFNodeTransformAgent(S32 node_index) const
 
     return mat;
 }
+
 void LLViewerObject::getGLTFNodeTransformAgent(S32 node_index, LLVector3* position, LLQuaternion* rotation, LLVector3* scale) const
 {
     LLMatrix4a node_to_agent = getGLTFNodeTransformAgent(node_index);
@@ -4605,7 +4485,7 @@ void decomposeMatrix(const LLMatrix4a& mat, LLVector3& position, LLQuaternion& r
 
 void LLViewerObject::setGLTFNodeRotationAgent(S32 node_index, const LLQuaternion& rotation)
 {
-    if (mGLTFAsset.notNull() && node_index >= 0 && node_index < mGLTFAsset->mNodes.size())
+    if (mGLTFAsset && node_index >= 0 && node_index < mGLTFAsset->mNodes.size())
     {
         auto& node = mGLTFAsset->mNodes[node_index];
 
@@ -4615,7 +4495,9 @@ void LLViewerObject::setGLTFNodeRotationAgent(S32 node_index, const LLQuaternion
         if (node.mParent != -1)
         {
             auto& parent = mGLTFAsset->mNodes[node.mParent];
-            matMul(agent_to_asset, parent.mAssetMatrixInv, agent_to_node);
+            LLMatrix4a ami;
+            ami.loadu(glm::value_ptr(parent.mAssetMatrixInv));
+            matMul(agent_to_asset, ami, agent_to_node);
         }
 
         LLQuaternion agent_to_node_rot(agent_to_node.asMatrix4());
@@ -4627,9 +4509,13 @@ void LLViewerObject::setGLTFNodeRotationAgent(S32 node_index, const LLQuaternion
         LLVector3 pos;
         LLQuaternion rot;
         LLVector3 scale;
-        decomposeMatrix(node.mMatrix, pos, rot, scale);
+        LLMatrix4a mat;
+        mat.loadu(glm::value_ptr(node.mMatrix));
+        decomposeMatrix(mat, pos, rot, scale);
+
+        mat.asMatrix4().initAll(scale, new_rot, pos);
 
-        node.mMatrix.asMatrix4().initAll(scale, new_rot, pos);
+        node.mMatrix = glm::make_mat4(mat.getF32ptr());
 
         mGLTFAsset->updateTransforms();
     }
@@ -4637,13 +4523,15 @@ void LLViewerObject::setGLTFNodeRotationAgent(S32 node_index, const LLQuaternion
 
 void LLViewerObject::moveGLTFNode(S32 node_index, const LLVector3& offset)
 {
-    if (mGLTFAsset.notNull() && node_index >= 0 && node_index < mGLTFAsset->mNodes.size())
+    if (mGLTFAsset && node_index >= 0 && node_index < mGLTFAsset->mNodes.size())
     {
         auto& node = mGLTFAsset->mNodes[node_index];
 
         LLMatrix4a agent_to_asset = getAgentToGLTFAssetTransform();
         LLMatrix4a agent_to_node;
-        matMul(agent_to_asset, node.mAssetMatrixInv, agent_to_node);
+        LLMatrix4a ami;
+        ami.loadu(glm::value_ptr(node.mAssetMatrixInv));
+        matMul(agent_to_asset, ami, agent_to_node);
 
         LLVector4a origin = LLVector4a::getZero();
         LLVector4a offset_v;
@@ -4660,7 +4548,12 @@ void LLViewerObject::moveGLTFNode(S32 node_index, const LLVector3& offset)
         trans.setIdentity();
         trans.mMatrix[3] = offset_v;
 
-        matMul(trans, node.mMatrix, node.mMatrix);
+        LLMatrix4a mat;
+        mat.loadu(glm::value_ptr(node.mMatrix));
+
+        matMul(trans, mat, mat);
+
+        node.mMatrix = glm::make_mat4(mat.getF32ptr());
 
         // TODO -- only update transforms for this node and its children (or use a dirty flag)
         mGLTFAsset->updateTransforms();
@@ -4786,7 +4679,7 @@ const LLQuaternion LLViewerObject::getRotationEdit() const
     return global_rotation;
 }
 
-void LLViewerObject::setPositionAbsoluteGlobal( const LLVector3d &pos_global, BOOL damped )
+void LLViewerObject::setPositionAbsoluteGlobal( const LLVector3d &pos_global, bool damped )
 {
     if (isAttachment())
     {
@@ -4835,7 +4728,7 @@ void LLViewerObject::setPositionAbsoluteGlobal( const LLVector3d &pos_global, BO
     gPipeline.updateMoveNormalAsync(mDrawable);
 }
 
-void LLViewerObject::setPosition(const LLVector3 &pos, BOOL damped)
+void LLViewerObject::setPosition(const LLVector3 &pos, bool damped)
 {
     if (getPosition() != pos)
     {
@@ -4851,7 +4744,7 @@ void LLViewerObject::setPosition(const LLVector3 &pos, BOOL damped)
     }
 }
 
-void LLViewerObject::setPositionGlobal(const LLVector3d &pos_global, BOOL damped)
+void LLViewerObject::setPositionGlobal(const LLVector3d &pos_global, bool damped)
 {
     if (isAttachment())
     {
@@ -4911,7 +4804,7 @@ void LLViewerObject::setPositionGlobal(const LLVector3d &pos_global, BOOL damped
 }
 
 
-void LLViewerObject::setPositionParent(const LLVector3 &pos_parent, BOOL damped)
+void LLViewerObject::setPositionParent(const LLVector3 &pos_parent, bool damped)
 {
     // Set position relative to parent, if no parent, relative to region
     if (!isRoot())
@@ -4925,7 +4818,7 @@ void LLViewerObject::setPositionParent(const LLVector3 &pos_parent, BOOL damped)
     }
 }
 
-void LLViewerObject::setPositionRegion(const LLVector3 &pos_region, BOOL damped)
+void LLViewerObject::setPositionRegion(const LLVector3 &pos_region, bool damped)
 {
     if (!isRootEdit())
     {
@@ -4940,7 +4833,7 @@ void LLViewerObject::setPositionRegion(const LLVector3 &pos_region, BOOL damped)
     }
 }
 
-void LLViewerObject::setPositionAgent(const LLVector3 &pos_agent, BOOL damped)
+void LLViewerObject::setPositionAgent(const LLVector3 &pos_agent, bool damped)
 {
     LLVector3 pos_region = getRegion()->getPosRegionFromAgent(pos_agent);
     setPositionRegion(pos_region, damped);
@@ -4950,7 +4843,7 @@ void LLViewerObject::setPositionAgent(const LLVector3 &pos_agent, BOOL damped)
 // and doesn't also move the joint-parent
 // TODO -- implement similar intelligence for joint-parents toward
 // their joint-children
-void LLViewerObject::setPositionEdit(const LLVector3 &pos_edit, BOOL damped)
+void LLViewerObject::setPositionEdit(const LLVector3 &pos_edit, bool damped)
 {
     if (!isRootEdit())
     {
@@ -4981,11 +4874,11 @@ LLViewerObject* LLViewerObject::getRootEdit() const
 }
 
 
-BOOL LLViewerObject::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
+bool LLViewerObject::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
                                           S32 face,
-                                          BOOL pick_transparent,
-                                          BOOL pick_rigged,
-                                          BOOL pick_unselectable,
+                                          bool pick_transparent,
+                                          bool pick_rigged,
+                                          bool pick_unselectable,
                                           S32* face_hit,
                                           LLVector4a* intersection,
                                           LLVector2* tex_coord,
@@ -4995,11 +4888,11 @@ BOOL LLViewerObject::lineSegmentIntersect(const LLVector4a& start, const LLVecto
     return false;
 }
 
-BOOL LLViewerObject::lineSegmentBoundingBox(const LLVector4a& start, const LLVector4a& end)
+bool LLViewerObject::lineSegmentBoundingBox(const LLVector4a& start, const LLVector4a& end)
 {
     if (mDrawable.isNull() || mDrawable->isDead())
     {
-        return FALSE;
+        return false;
     }
 
     const LLVector4a* ext = mDrawable->getSpatialExtents();
@@ -5059,20 +4952,20 @@ void LLViewerObject::setMediaURL(const std::string& media_url)
     {
         mMedia = new LLViewerObjectMedia;
         mMedia->mMediaURL = media_url;
-        mMedia->mPassedWhitelist = FALSE;
+        mMedia->mPassedWhitelist = false;
 
         // TODO: update materials with new image
     }
     else if (mMedia->mMediaURL != media_url)
     {
         mMedia->mMediaURL = media_url;
-        mMedia->mPassedWhitelist = FALSE;
+        mMedia->mPassedWhitelist = false;
 
         // TODO: update materials with new image
     }
 }
 
-BOOL LLViewerObject::getMediaPassedWhitelist() const
+bool LLViewerObject::getMediaPassedWhitelist() const
 {
     if (mMedia)
     {
@@ -5080,11 +4973,11 @@ BOOL LLViewerObject::getMediaPassedWhitelist() const
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
-void LLViewerObject::setMediaPassedWhitelist(BOOL passed)
+void LLViewerObject::setMediaPassedWhitelist(bool passed)
 {
     if (mMedia)
     {
@@ -5092,9 +4985,9 @@ void LLViewerObject::setMediaPassedWhitelist(BOOL passed)
     }
 }
 
-BOOL LLViewerObject::setMaterial(const U8 material)
+bool LLViewerObject::setMaterial(const U8 material)
 {
-    BOOL res = LLPrimitive::setMaterial(material);
+    bool res = LLPrimitive::setMaterial(material);
     if (res)
     {
         setChanged(TEXTURE);
@@ -5258,7 +5151,7 @@ LLViewerTexture* LLViewerObject::getBakedTextureForMagicId(const LLUUID& id)
     LLViewerObject *root = getRootEdit();
     if (root && root->isAnimatedObject())
     {
-        return LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+        return LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
     }
 
     LLVOAvatar* avatar = getAvatar();
@@ -5268,7 +5161,7 @@ LLViewerTexture* LLViewerObject::getBakedTextureForMagicId(const LLUUID& id)
         LLViewerTexture* bakedTexture = avatar->getBakedTexture(texIndex);
         if (bakedTexture == NULL || bakedTexture->isMissingAsset())
         {
-            return LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+            return LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
         }
         else
         {
@@ -5277,7 +5170,7 @@ LLViewerTexture* LLViewerObject::getBakedTextureForMagicId(const LLUUID& id)
     }
     else
     {
-        return LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+        return LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
     }
 
 }
@@ -5314,7 +5207,7 @@ void LLViewerObject::setTE(const U8 te, const LLTextureEntry& texture_entry)
 
     const LLUUID& image_id = getTE(te)->getID();
     LLViewerTexture* bakedTexture = getBakedTextureForMagicId(image_id);
-    mTEImages[te] = bakedTexture ? bakedTexture : LLViewerTextureManager::getFetchedTexture(image_id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+    mTEImages[te] = bakedTexture ? bakedTexture : LLViewerTextureManager::getFetchedTexture(image_id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
 
     updateAvatarMeshVisibility(image_id, old_image_id);
 
@@ -5326,10 +5219,10 @@ void LLViewerObject::updateTEMaterialTextures(U8 te)
     if (getTE(te)->getMaterialParams().notNull())
     {
         const LLUUID& norm_id = getTE(te)->getMaterialParams()->getNormalID();
-        mTENormalMaps[te] = LLViewerTextureManager::getFetchedTexture(norm_id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+        mTENormalMaps[te] = LLViewerTextureManager::getFetchedTexture(norm_id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
 
         const LLUUID& spec_id = getTE(te)->getMaterialParams()->getSpecularID();
-        mTESpecularMaps[te] = LLViewerTextureManager::getFetchedTexture(spec_id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+        mTESpecularMaps[te] = LLViewerTextureManager::getFetchedTexture(spec_id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
     }
 
     LLFetchedGLTFMaterial* mat = (LLFetchedGLTFMaterial*) getTE(te)->getGLTFRenderMaterial();
@@ -5371,8 +5264,8 @@ void LLViewerObject::updateTEMaterialTextures(U8 te)
             }
             else
             {
-                img = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
-                img->addTextureStats(64.f * 64.f, TRUE);
+                img = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+                img->addTextureStats(64.f * 64.f, true);
             }
         }
 
@@ -5522,21 +5415,21 @@ S32 LLViewerObject::setTETexture(const U8 te, const LLUUID& uuid)
 {
     // Invalid host == get from the agent's sim
     LLViewerFetchedTexture *image = LLViewerTextureManager::getFetchedTexture(
-        uuid, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, LLHost());
+        uuid, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, LLHost());
         return setTETextureCore(te, image);
 }
 
 S32 LLViewerObject::setTENormalMap(const U8 te, const LLUUID& uuid)
 {
     LLViewerFetchedTexture *image = (uuid == LLUUID::null) ? NULL : LLViewerTextureManager::getFetchedTexture(
-        uuid, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, LLHost());
+        uuid, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, LLHost());
     return setTENormalMapCore(te, image);
 }
 
 S32 LLViewerObject::setTESpecularMap(const U8 te, const LLUUID& uuid)
 {
     LLViewerFetchedTexture *image = (uuid == LLUUID::null) ? NULL : LLViewerTextureManager::getFetchedTexture(
-        uuid, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, LLHost());
+        uuid, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, LLHost());
     return setTESpecularMapCore(te, image);
 }
 
@@ -6075,8 +5968,8 @@ void LLViewerObject::setDebugText(const std::string &utf8text, const LLColor4& c
     }
     mText->setColor(color);
     mText->setString(utf8text);
-    mText->setZCompare(FALSE);
-    mText->setDoFade(FALSE);
+    mText->setZCompare(false);
+    mText->setDoFade(false);
     updateText();
 }
 
@@ -6092,8 +5985,8 @@ void LLViewerObject::appendDebugText(const std::string &utf8text)
         initHudText();
     }
     mText->addLine(utf8text, LLColor4::white);
-    mText->setZCompare(FALSE);
-    mText->setDoFade(FALSE);
+    mText->setZCompare(false);
+    mText->setDoFade(false);
     updateText();
 }
 
@@ -6126,8 +6019,8 @@ void LLViewerObject::restoreHudText()
         else
         {
             // Restore default values
-            mText->setZCompare(TRUE);
-            mText->setDoFade(TRUE);
+            mText->setZCompare(true);
+            mText->setDoFade(true);
         }
         mText->setColor(mHudTextColor);
         mText->setString(mHudText);
@@ -6168,7 +6061,7 @@ const LLViewerObject* LLViewerObject::getSubParent() const
     return (const LLViewerObject*) getParent();
 }
 
-BOOL LLViewerObject::isOnMap()
+bool LLViewerObject::isOnMap()
 {
     return mOnMap;
 }
@@ -6252,7 +6145,7 @@ LLVOAvatar* LLViewerObject::getAvatarAncestor()
     return NULL;
 }
 
-BOOL LLViewerObject::isParticleSource() const
+bool LLViewerObject::isParticleSource() const
 {
     return !mPartSourcep.isNull() && !mPartSourcep->isDead();
 }
@@ -6393,7 +6286,7 @@ void LLViewerObject::deleteParticleSource()
 }
 
 // virtual
-void LLViewerObject::updateDrawable(BOOL force_damped)
+void LLViewerObject::updateDrawable(bool force_damped)
 {
     if (!isChanged(MOVED))
     { //most common case, having an empty if case here makes for better branch prediction
@@ -6401,7 +6294,7 @@ void LLViewerObject::updateDrawable(BOOL force_damped)
     else if (mDrawable.notNull() &&
         !mDrawable->isState(LLDrawable::ON_MOVE_LIST))
     {
-        BOOL damped_motion =
+        bool damped_motion =
             !isChanged(SHIFTED) &&                                      // not shifted between regions this frame and...
             (   force_damped ||                                     // ...forced into damped motion by application logic or...
                 (   !isSelected() &&                                    // ...not selected and...
@@ -6480,7 +6373,7 @@ void LLViewerObject::setAttachedSound(const LLUUID &audio_uuid, const LLUUID& ow
 
     if (mAudioSourcep)
     {
-        BOOL queue = flags & LL_SOUND_FLAG_QUEUE;
+        bool queue = flags & LL_SOUND_FLAG_QUEUE;
         mAudioGain = gain;
         mAudioSourcep->setGain(gain);
         mAudioSourcep->setLoop(flags & LL_SOUND_FLAG_LOOP);
@@ -6542,8 +6435,8 @@ bool LLViewerObject::unpackParameterEntry(U16 param_type, LLDataPacker *dp)
     if (param)
     {
         param->data->unpack(*dp);
-        param->in_use = TRUE;
-        parameterChanged(param_type, param->data, TRUE, false);
+        param->in_use = true;
+        parameterChanged(param_type, param->data, true, false);
         return true;
     }
     else
@@ -6645,7 +6538,7 @@ LLNetworkData* LLViewerObject::getParameterEntry(U16 param_type) const
     }
 }
 
-BOOL LLViewerObject::getParameterEntryInUse(U16 param_type) const
+bool LLViewerObject::getParameterEntryInUse(U16 param_type) const
 {
     ExtraParameter* param = getExtraParameterEntry(param_type);
     if (param)
@@ -6654,7 +6547,7 @@ BOOL LLViewerObject::getParameterEntryInUse(U16 param_type) const
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -6669,7 +6562,7 @@ bool LLViewerObject::setParameterEntry(U16 param_type, const LLNetworkData& new_
         }
         param->in_use = true;
         param->data->copy(new_value);
-        parameterChanged(param_type, param->data, TRUE, local_origin);
+        parameterChanged(param_type, param->data, true, local_origin);
         return true;
     }
     else
@@ -6679,9 +6572,9 @@ bool LLViewerObject::setParameterEntry(U16 param_type, const LLNetworkData& new_
 }
 
 // Assumed to be called locally
-// If in_use is TRUE, will crate a new extra parameter if none exists.
+// If in_use is true, will crate a new extra parameter if none exists.
 // Should always return true.
-bool LLViewerObject::setParameterEntryInUse(U16 param_type, BOOL in_use, bool local_origin)
+bool LLViewerObject::setParameterEntryInUse(U16 param_type, bool in_use, bool local_origin)
 {
     ExtraParameter* param = getExtraParameterEntryCreate(param_type);
     if (param && param->in_use != in_use)
@@ -6702,7 +6595,7 @@ void LLViewerObject::parameterChanged(U16 param_type, bool local_origin)
     }
 }
 
-void LLViewerObject::parameterChanged(U16 param_type, LLNetworkData* data, BOOL in_use, bool local_origin)
+void LLViewerObject::parameterChanged(U16 param_type, LLNetworkData* data, bool in_use, bool local_origin)
 {
     if (local_origin)
     {
@@ -6752,7 +6645,7 @@ void LLViewerObject::parameterChanged(U16 param_type, LLNetworkData* data, BOOL
     }
 }
 
-void LLViewerObject::setDrawableState(U32 state, BOOL recursive)
+void LLViewerObject::setDrawableState(U32 state, bool recursive)
 {
     if (mDrawable)
     {
@@ -6769,7 +6662,7 @@ void LLViewerObject::setDrawableState(U32 state, BOOL recursive)
     }
 }
 
-void LLViewerObject::clearDrawableState(U32 state, BOOL recursive)
+void LLViewerObject::clearDrawableState(U32 state, bool recursive)
 {
     if (mDrawable)
     {
@@ -6786,9 +6679,9 @@ void LLViewerObject::clearDrawableState(U32 state, BOOL recursive)
     }
 }
 
-BOOL LLViewerObject::isDrawableState(U32 state, BOOL recursive) const
+bool LLViewerObject::isDrawableState(U32 state, bool recursive) const
 {
-    BOOL matches = FALSE;
+    bool matches = false;
     if (mDrawable)
     {
         matches = mDrawable->isState(state);
@@ -6813,7 +6706,7 @@ BOOL LLViewerObject::isDrawableState(U32 state, BOOL recursive) const
 //!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
 // Owned by anyone?
-BOOL LLViewerObject::permAnyOwner() const
+bool LLViewerObject::permAnyOwner() const
 {
     if (isRootEdit())
     {
@@ -6825,18 +6718,18 @@ BOOL LLViewerObject::permAnyOwner() const
     }
 }
 // Owned by this viewer?
-BOOL LLViewerObject::permYouOwner() const
+bool LLViewerObject::permYouOwner() const
 {
     if (isRootEdit())
     {
 #ifdef HACKED_GODLIKE_VIEWER
-        return TRUE;
+        return true;
 #else
 # ifdef TOGGLE_HACKED_GODLIKE_VIEWER
         if (!LLGridManager::getInstance()->isInProductionGrid()
             && (gAgent.getGodLevel() >= GOD_MAINTENANCE))
         {
-            return TRUE;
+            return true;
         }
 # endif
         return flagObjectYouOwner();
@@ -6849,7 +6742,7 @@ BOOL LLViewerObject::permYouOwner() const
 }
 
 // Owned by a group?
-BOOL LLViewerObject::permGroupOwner() const
+bool LLViewerObject::permGroupOwner() const
 {
     if (isRootEdit())
     {
@@ -6862,18 +6755,18 @@ BOOL LLViewerObject::permGroupOwner() const
 }
 
 // Can the owner edit
-BOOL LLViewerObject::permOwnerModify() const
+bool LLViewerObject::permOwnerModify() const
 {
     if (isRootEdit())
     {
 #ifdef HACKED_GODLIKE_VIEWER
-        return TRUE;
+        return true;
 #else
 # ifdef TOGGLE_HACKED_GODLIKE_VIEWER
         if (!LLGridManager::getInstance()->isInProductionGrid()
             && (gAgent.getGodLevel() >= GOD_MAINTENANCE))
     {
-            return TRUE;
+            return true;
     }
 # endif
         return flagObjectOwnerModify();
@@ -6886,18 +6779,18 @@ BOOL LLViewerObject::permOwnerModify() const
 }
 
 // Can edit
-BOOL LLViewerObject::permModify() const
+bool LLViewerObject::permModify() const
 {
     if (isRootEdit())
     {
 #ifdef HACKED_GODLIKE_VIEWER
-        return TRUE;
+        return true;
 #else
 # ifdef TOGGLE_HACKED_GODLIKE_VIEWER
         if (!LLGridManager::getInstance()->isInProductionGrid()
             && (gAgent.getGodLevel() >= GOD_MAINTENANCE))
     {
-            return TRUE;
+            return true;
     }
 # endif
         return flagObjectModify();
@@ -6910,18 +6803,18 @@ BOOL LLViewerObject::permModify() const
 }
 
 // Can copy
-BOOL LLViewerObject::permCopy() const
+bool LLViewerObject::permCopy() const
 {
     if (isRootEdit())
     {
 #ifdef HACKED_GODLIKE_VIEWER
-        return TRUE;
+        return true;
 #else
 # ifdef TOGGLE_HACKED_GODLIKE_VIEWER
         if (!LLGridManager::getInstance()->isInProductionGrid()
             && (gAgent.getGodLevel() >= GOD_MAINTENANCE))
         {
-            return TRUE;
+            return true;
         }
 # endif
         return flagObjectCopy();
@@ -6934,18 +6827,18 @@ BOOL LLViewerObject::permCopy() const
 }
 
 // Can move
-BOOL LLViewerObject::permMove() const
+bool LLViewerObject::permMove() const
 {
     if (isRootEdit())
     {
 #ifdef HACKED_GODLIKE_VIEWER
-        return TRUE;
+        return true;
 #else
 # ifdef TOGGLE_HACKED_GODLIKE_VIEWER
         if (!LLGridManager::getInstance()->isInProductionGrid()
             && (gAgent.getGodLevel() >= GOD_MAINTENANCE))
         {
-            return TRUE;
+            return true;
         }
 # endif
         return flagObjectMove();
@@ -6958,18 +6851,18 @@ BOOL LLViewerObject::permMove() const
 }
 
 // Can be transferred
-BOOL LLViewerObject::permTransfer() const
+bool LLViewerObject::permTransfer() const
 {
     if (isRootEdit())
     {
 #ifdef HACKED_GODLIKE_VIEWER
-        return TRUE;
+        return true;
 #else
 # ifdef TOGGLE_HACKED_GODLIKE_VIEWER
         if (!LLGridManager::getInstance()->isInProductionGrid()
             && (gAgent.getGodLevel() >= GOD_MAINTENANCE))
         {
-            return TRUE;
+            return true;
         }
 # endif
         return flagObjectTransfer();
@@ -6983,7 +6876,7 @@ BOOL LLViewerObject::permTransfer() const
 
 // Can only open objects that you own, or that someone has
 // given you modify rights to.  JC
-BOOL LLViewerObject::allowOpen() const
+bool LLViewerObject::allowOpen() const
 {
     return !flagInventoryEmpty() && (permYouOwner() || permModify());
 }
@@ -7074,7 +6967,7 @@ void LLViewerObject::setRegion(LLViewerRegion *regionp)
     }
 
     setChanged(MOVED | SILHOUETTE);
-    updateDrawable(FALSE);
+    updateDrawable(false);
 }
 
 // virtual
@@ -7098,7 +6991,7 @@ bool LLViewerObject::specialHoverCursor() const
             || (mClickAction != 0);
 }
 
-void LLViewerObject::updateFlags(BOOL physics_changed)
+void LLViewerObject::updateFlags(bool physics_changed)
 {
     LLViewerRegion* regionp = getRegion();
     if(!regionp) return;
@@ -7111,10 +7004,10 @@ void LLViewerObject::updateFlags(BOOL physics_changed)
     gMessageSystem->addBOOL("IsTemporary", flagTemporaryOnRez() );
     gMessageSystem->addBOOL("IsPhantom", flagPhantom() );
 
-    // stinson 02/28/2012 : This CastsShadows BOOL is no longer used in either the viewer or the simulator
+    // stinson 02/28/2012 : This CastsShadows bool is no longer used in either the viewer or the simulator
     // The simulator code does not even unpack this value when the message is received.
     // This could be potentially hijacked in the future for another use should the urgent need arise.
-    gMessageSystem->addBOOL("CastsShadows", FALSE );
+    gMessageSystem->addBOOL("CastsShadows", false );
 
     if (physics_changed)
     {
@@ -7128,9 +7021,9 @@ void LLViewerObject::updateFlags(BOOL physics_changed)
     gMessageSystem->sendReliable( regionp->getHost() );
 }
 
-BOOL LLViewerObject::setFlags(U32 flags, BOOL state)
+bool LLViewerObject::setFlags(U32 flags, bool state)
 {
-    BOOL setit = setFlagsWithoutUpdate(flags, state);
+    bool setit = setFlagsWithoutUpdate(flags, state);
 
     // BUG: Sometimes viewer physics and simulator physics get
     // out of sync.  To fix this, always send update to simulator.
@@ -7141,15 +7034,15 @@ BOOL LLViewerObject::setFlags(U32 flags, BOOL state)
     return setit;
 }
 
-BOOL LLViewerObject::setFlagsWithoutUpdate(U32 flags, BOOL state)
+bool LLViewerObject::setFlagsWithoutUpdate(U32 flags, bool state)
 {
-    BOOL setit = FALSE;
+    bool setit = false;
     if (state)
     {
         if ((mFlags & flags) != flags)
         {
             mFlags |= flags;
-            setit = TRUE;
+            setit = true;
         }
     }
     else
@@ -7157,7 +7050,7 @@ BOOL LLViewerObject::setFlagsWithoutUpdate(U32 flags, BOOL state)
         if ((mFlags & flags) != 0)
         {
             mFlags &= ~flags;
-            setit = TRUE;
+            setit = true;
         }
     }
     return setit;
@@ -7280,12 +7173,12 @@ void LLAlphaObject::getBlendFunc(S32 face, LLRender::eBlendFactor& src, LLRender
 }
 
 // virtual
-void LLStaticViewerObject::updateDrawable(BOOL force_damped)
+void LLStaticViewerObject::updateDrawable(bool force_damped)
 {
     // Force an immediate rebuild on any update
     if (mDrawable.notNull())
     {
-        mDrawable->updateXform(TRUE);
+        mDrawable->updateXform(true);
         gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_ALL);
     }
     clearChanged(SHIFTED);
@@ -7363,8 +7256,8 @@ void LLViewerObject::resetChildrenRotationAndPosition(const std::vector<LLQuater
                 ((LLVOAvatar*)childp)->mDrawable->mXform.setPosition(reset_pos);
                 ((LLVOAvatar*)childp)->mDrawable->mXform.setRotation(reset_rot) ;
 
-                ((LLVOAvatar*)childp)->mDrawable->getVObj()->setPosition(reset_pos, TRUE);
-                ((LLVOAvatar*)childp)->mDrawable->getVObj()->setRotation(reset_rot, TRUE) ;
+                ((LLVOAvatar*)childp)->mDrawable->getVObj()->setPosition(reset_pos, true);
+                ((LLVOAvatar*)childp)->mDrawable->getVObj()->setRotation(reset_rot, true) ;
 
                 LLManip::rebuild(childp);
             }
@@ -7376,7 +7269,7 @@ void LLViewerObject::resetChildrenRotationAndPosition(const std::vector<LLQuater
 }
 
 //counter-translation
-void LLViewerObject::resetChildrenPosition(const LLVector3& offset, BOOL simplified, BOOL skip_avatar_child)
+void LLViewerObject::resetChildrenPosition(const LLVector3& offset, bool simplified, bool skip_avatar_child)
 {
     if(mChildList.empty())
     {
@@ -7432,18 +7325,18 @@ void LLViewerObject::resetChildrenPosition(const LLVector3& offset, BOOL simplif
 }
 
 // virtual
-BOOL    LLViewerObject::isTempAttachment() const
+bool    LLViewerObject::isTempAttachment() const
 {
     return (mID.notNull() && (mID == mAttachmentItemID));
 }
 
-BOOL LLViewerObject::isHiglightedOrBeacon() const
+bool LLViewerObject::isHiglightedOrBeacon() const
 {
     if (LLFloaterReg::instanceVisible("beacons") && (gPipeline.getRenderBeacons() || gPipeline.getRenderHighlights()))
     {
-        BOOL has_media = (getMediaType() == LLViewerObject::MEDIA_SET);
-        BOOL is_scripted = !isAvatar() && !getParent() && flagScripted();
-        BOOL is_physical = !isAvatar() && flagUsePhysics();
+        bool has_media = (getMediaType() == LLViewerObject::MEDIA_SET);
+        bool is_scripted = !isAvatar() && !getParent() && flagScripted();
+        bool is_physical = !isAvatar() && flagUsePhysics();
 
         return (isParticleSource() && gPipeline.getRenderParticleBeacons())
                 || (isAudioSource() && gPipeline.getRenderSoundBeacons())
@@ -7452,7 +7345,7 @@ BOOL LLViewerObject::isHiglightedOrBeacon() const
                 || (is_scripted && flagHandleTouch() && gPipeline.getRenderScriptedTouchBeacons())
                 || (is_physical && gPipeline.getRenderPhysicalBeacons());
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -7476,12 +7369,12 @@ void LLViewerObject::setLastUpdateType(EObjectUpdateType last_update_type)
     mLastUpdateType = last_update_type;
 }
 
-BOOL LLViewerObject::getLastUpdateCached() const
+bool LLViewerObject::getLastUpdateCached() const
 {
     return mLastUpdateCached;
 }
 
-void LLViewerObject::setLastUpdateCached(BOOL last_update_cached)
+void LLViewerObject::setLastUpdateCached(bool last_update_cached)
 {
     mLastUpdateCached = last_update_cached;
 }
@@ -7548,11 +7441,11 @@ void LLViewerObject::setHasRenderMaterialParams(bool has_materials)
     {
         if (has_materials)
         {
-            setParameterEntryInUse(LLNetworkData::PARAMS_RENDER_MATERIAL, TRUE, true);
+            setParameterEntryInUse(LLNetworkData::PARAMS_RENDER_MATERIAL, true, true);
         }
         else
         {
-            setParameterEntryInUse(LLNetworkData::PARAMS_RENDER_MATERIAL, FALSE, true);
+            setParameterEntryInUse(LLNetworkData::PARAMS_RENDER_MATERIAL, false, true);
         }
     }
 }
@@ -7751,6 +7644,23 @@ void LLViewerObject::shrinkWrap()
     }
 }
 
+void LLViewerObject::setGLTFAsset(const LLUUID& id)
+{
+    //get the sculpt params and set the sculpt type and id
+    auto* param = getExtraParameterEntryCreate(LLNetworkData::PARAMS_SCULPT);
+
+    LLSculptParams* sculpt_params = (LLSculptParams*)param->data;
+    sculpt_params->setSculptTexture(id, LL_SCULPT_TYPE_GLTF);
+
+    setParameterEntryInUse(LLNetworkData::PARAMS_SCULPT, true, true);
+
+    // Update the volume
+    LLVolumeParams volume_params;
+    volume_params.setSculptID(id, LL_SCULPT_TYPE_GLTF);
+    updateVolume(volume_params);
+}
+
+
 class ObjectPhysicsProperties : public LLHTTPNode
 {
 public:
@@ -7760,7 +7670,7 @@ public:
         const LLSD& input) const
     {
         LLSD object_data = input["body"]["ObjectData"];
-        S32 num_entries = object_data.size();
+        S32 num_entries = static_cast<S32>(object_data.size());
 
         for ( S32 i = 0; i < num_entries; i++ )
         {
diff --git a/indra/newview/llviewerobject.h b/indra/newview/llviewerobject.h
index ad7b3072c8..08c81c4b6c 100644
--- a/indra/newview/llviewerobject.h
+++ b/indra/newview/llviewerobject.h
@@ -1,3 +1,4 @@
+
 /**
  * @file llviewerobject.h
  * @brief Description of LLViewerObject class, which is the base class for most objects in the viewer.
@@ -45,7 +46,14 @@
 #include "llbbox.h"
 #include "llrigginginfo.h"
 #include "llreflectionmap.h"
-#include "gltf/asset.h"
+
+namespace LL
+{
+    namespace GLTF
+    {
+        class Asset;
+    }
+}
 
 class LLAgent;          // TODO: Get rid of this.
 class LLAudioSource;
@@ -121,7 +129,7 @@ protected:
     // TomY: Provide for a list of extra parameter structures, mapped by structure name
     struct ExtraParameter
     {
-        BOOL in_use;
+        bool in_use;
         LLNetworkData *data;
     };
     std::unordered_map<U16, ExtraParameter*> mExtraParameterList;
@@ -132,12 +140,12 @@ public:
 
     typedef const child_list_t const_child_list_t;
 
-    LLViewerObject(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp, BOOL is_global = FALSE);
+    LLViewerObject(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp, bool is_global = false);
 
     virtual void markDead();                // Mark this object as dead, and clean up its references
-    BOOL isDead() const                                 {return mDead;}
-    BOOL isOrphaned() const                             { return mOrphaned; }
-    BOOL isParticleSource() const;
+    bool isDead() const                                 {return mDead;}
+    bool isOrphaned() const                             { return mOrphaned; }
+    bool isParticleSource() const;
 
     virtual LLVOAvatar* asAvatar();
 
@@ -147,7 +155,7 @@ public:
     static void cleanupVOClasses();
 
     void            addNVPair(const std::string& data);
-    BOOL            removeNVPair(const std::string& name);
+    bool            removeNVPair(const std::string& name);
     LLNameValue*    getNVPair(const std::string& name) const;           // null if no name value pair by that name
 
     // Object create and update functions
@@ -173,11 +181,11 @@ public:
                                         LLDataPacker *dp);
 
 
-    virtual BOOL    isActive() const; // Whether this object needs to do an idleUpdate.
-    BOOL            onActiveList() const                {return mOnActiveList;}
-    void            setOnActiveList(BOOL on_active)     { mOnActiveList = on_active; }
+    virtual bool    isActive() const; // Whether this object needs to do an idleUpdate.
+    bool            onActiveList() const                {return mOnActiveList;}
+    void            setOnActiveList(bool on_active)     { mOnActiveList = on_active; }
 
-    virtual BOOL    isAttachment() const { return FALSE; }
+    virtual bool    isAttachment() const { return false; }
     const std::string& getAttachmentItemName() const;
 
     virtual LLVOAvatar* getAvatar() const;  //get the avatar this object is attached to, or NULL if object is not an attachment
@@ -194,10 +202,10 @@ public:
     void setRenderMaterialID(S32 te, const LLUUID& id, bool update_server = true, bool local_origin = true);
     void setRenderMaterialIDs(const LLUUID& id);
 
-    virtual BOOL    isHUDAttachment() const { return FALSE; }
-    virtual BOOL    isTempAttachment() const;
+    virtual bool    isHUDAttachment() const { return false; }
+    virtual bool    isTempAttachment() const;
 
-    virtual BOOL isHiglightedOrBeacon() const;
+    virtual bool isHiglightedOrBeacon() const;
 
     virtual void    updateRadius() {};
     virtual F32     getVObjRadius() const; // default implemenation is mDrawable->getRadius()
@@ -216,14 +224,14 @@ public:
     // Graphical stuff for objects - maybe broken out into render class later?
     virtual void updateTextures();
     virtual void faceMappingChanged() {}
-    virtual void boostTexturePriority(BOOL boost_children = TRUE);  // When you just want to boost priority of this object
+    virtual void boostTexturePriority(bool boost_children = true);  // When you just want to boost priority of this object
 
     virtual LLDrawable* createDrawable(LLPipeline *pipeline);
-    virtual BOOL        updateGeometry(LLDrawable *drawable);
+    virtual bool        updateGeometry(LLDrawable *drawable);
     virtual void        updateGL();
     virtual void        updateFaceSize(S32 idx);
-    virtual BOOL        updateLOD();
-    virtual BOOL        setDrawableParent(LLDrawable* parentp);
+    virtual bool        updateLOD();
+    virtual bool        setDrawableParent(LLDrawable* parentp);
     F32                 getRotTime() { return mRotTime; }
 private:
     void                resetRotTime();
@@ -241,10 +249,10 @@ public:
     // Accessor functions
     LLViewerRegion* getRegion() const               { return mRegionp; }
 
-    BOOL isSelected() const                         { return mUserSelected; }
+    bool isSelected() const                         { return mUserSelected; }
     // Check whole linkset
-    BOOL isAnySelected() const;
-    virtual void setSelected(BOOL sel);
+    bool isAnySelected() const;
+    virtual void setSelected(bool sel);
 
     const LLUUID &getID() const                     { return mID; }
     U32 getLocalID() const                          { return mLocalID; }
@@ -252,12 +260,13 @@ public:
     S32 getListIndex() const                        { return mListIndex; }
     void setListIndex(S32 idx)                      { mListIndex = idx; }
 
-    virtual BOOL isFlexible() const                 { return FALSE; }
-    virtual BOOL isSculpted() const                 { return FALSE; }
-    virtual BOOL isMesh() const                     { return FALSE; }
-    virtual BOOL isRiggedMesh() const               { return FALSE; }
-    virtual BOOL hasLightTexture() const            { return FALSE; }
-    virtual BOOL isReflectionProbe() const          { return FALSE; }
+    virtual bool isFlexible() const                 { return false; }
+    virtual bool isSculpted() const                 { return false; }
+    virtual bool isMesh() const                     { return false; }
+    virtual bool isRiggedMesh() const               { return false; }
+    virtual bool hasLightTexture() const            { return false; }
+    virtual bool isReflectionProbe() const          { return false; }
+    virtual bool getReflectionProbeIsBox() const    { return false; }
 
     // This method returns true if the object is over land owned by
     // the agent, one of its groups, or it encroaches and
@@ -277,29 +286,29 @@ public:
     // ability to modify the object. Since this calls into the
     // selection manager, you should avoid calling this method from
     // there.
-    BOOL isProbablyModifiable() const;
+    bool isProbablyModifiable() const;
     */
 
-    virtual BOOL setParent(LLViewerObject* parent);
+    virtual bool setParent(LLViewerObject* parent);
     virtual void onReparent(LLViewerObject *old_parent, LLViewerObject *new_parent);
     virtual void afterReparent();
     virtual void addChild(LLViewerObject *childp);
     virtual void removeChild(LLViewerObject *childp);
     const_child_list_t& getChildren() const {   return mChildList; }
-    S32 numChildren() const { return mChildList.size(); }
+    S32 numChildren() const { return static_cast<S32>(mChildList.size()); }
     void addThisAndAllChildren(std::vector<LLViewerObject*>& objects);
     void addThisAndNonJointChildren(std::vector<LLViewerObject*>& objects);
-    BOOL isChild(LLViewerObject *childp) const;
-    BOOL isSeat() const;
+    bool isChild(LLViewerObject *childp) const;
+    bool isSeat() const;
 
 
     //detect if given line segment (in agent space) intersects with this viewer object.
-    //returns TRUE if intersection detected and returns information about intersection
-    virtual BOOL lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
+    //returns true if intersection detected and returns information about intersection
+    virtual bool lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
                                       S32 face = -1,                          // which face to check, -1 = ALL_SIDES
-                                      BOOL pick_transparent = FALSE,
-                                      BOOL pick_rigged = FALSE,
-                                      BOOL pick_unselectable = TRUE,
+                                      bool pick_transparent = false,
+                                      bool pick_rigged = false,
+                                      bool pick_unselectable = true,
                                       S32* face_hit = NULL,                   // which face was hit
                                       LLVector4a* intersection = NULL,         // return the intersection point
                                       LLVector2* tex_coord = NULL,            // return the texture coordinates of the intersection point
@@ -307,7 +316,7 @@ public:
                                       LLVector4a* tangent = NULL             // return the surface tangent at the intersection point
         );
 
-    virtual BOOL lineSegmentBoundingBox(const LLVector4a& start, const LLVector4a& end);
+    virtual bool lineSegmentBoundingBox(const LLVector4a& start, const LLVector4a& end);
 
     virtual const LLVector3d getPositionGlobal() const;
     virtual const LLVector3 &getPositionRegion() const;
@@ -336,18 +345,18 @@ public:
     const LLQuaternion getRenderRotation() const;
     virtual const LLMatrix4 getRenderMatrix() const;
 
-    void setPosition(const LLVector3 &pos, BOOL damped = FALSE);
-    void setPositionGlobal(const LLVector3d &position, BOOL damped = FALSE);
-    void setPositionRegion(const LLVector3 &position, BOOL damped = FALSE);
-    void setPositionEdit(const LLVector3 &position, BOOL damped = FALSE);
-    void setPositionAgent(const LLVector3 &pos_agent, BOOL damped = FALSE);
-    void setPositionParent(const LLVector3 &pos_parent, BOOL damped = FALSE);
-    void setPositionAbsoluteGlobal( const LLVector3d &pos_global, BOOL damped = FALSE );
+    void setPosition(const LLVector3 &pos, bool damped = false);
+    void setPositionGlobal(const LLVector3d &position, bool damped = false);
+    void setPositionRegion(const LLVector3 &position, bool damped = false);
+    void setPositionEdit(const LLVector3 &position, bool damped = false);
+    void setPositionAgent(const LLVector3 &pos_agent, bool damped = false);
+    void setPositionParent(const LLVector3 &pos_parent, bool damped = false);
+    void setPositionAbsoluteGlobal( const LLVector3d &pos_global, bool damped = false );
 
     virtual const LLMatrix4& getWorldMatrix(LLXformMatrix* xform) const     { return xform->getWorldMatrix(); }
 
-    inline void setRotation(const F32 x, const F32 y, const F32 z, BOOL damped = FALSE);
-    inline void setRotation(const LLQuaternion& quat, BOOL damped = FALSE);
+    inline void setRotation(const F32 x, const F32 y, const F32 z, bool damped = false);
+    inline void setRotation(const LLQuaternion& quat, bool damped = false);
 
     /*virtual*/ void    setNumTEs(const U8 num_tes);
     /*virtual*/ void    setTE(const U8 te, const LLTextureEntry &texture_entry);
@@ -383,7 +392,7 @@ public:
     //
     void refreshMaterials();
 
-    /*virtual*/ BOOL    setMaterial(const U8 material);
+    /*virtual*/ bool    setMaterial(const U8 material);
     virtual     void    setTEImage(const U8 te, LLViewerTexture *imagep); // Not derived from LLPrimitive
     virtual     void    changeTEImage(S32 index, LLViewerTexture* new_image)  ;
     virtual     void    changeTENormalMap(S32 index, LLViewerTexture* new_image)  ;
@@ -397,7 +406,7 @@ public:
     void fitFaceTexture(const U8 face);
     void sendTEUpdate() const;          // Sends packed representation of all texture entry information
 
-    virtual void setScale(const LLVector3 &scale, BOOL damped = FALSE);
+    virtual void setScale(const LLVector3 &scale, bool damped = false);
 
     S32 getAnimatedObjectMaxTris() const;
     F32 recursiveGetEstTrianglesMax() const;
@@ -442,7 +451,7 @@ public:
 
      // Create if necessary
     LLAudioSource *getAudioSource(const LLUUID& owner_id);
-    BOOL isAudioSource() const {return mAudioSourcep != NULL;}
+    bool isAudioSource() const {return mAudioSourcep != NULL;}
 
     U8 getMediaType() const;
     void setMediaType(U8 media_type);
@@ -450,8 +459,8 @@ public:
     std::string getMediaURL() const;
     void setMediaURL(const std::string& media_url);
 
-    BOOL getMediaPassedWhitelist() const;
-    void setMediaPassedWhitelist(BOOL passed);
+    bool getMediaPassedWhitelist() const;
+    void setMediaPassedWhitelist(bool passed);
 
     void sendMaterialUpdate() const;
 
@@ -472,13 +481,13 @@ public:
 
     void updatePositionCaches() const; // Update the global and region position caches from the object (and parent's) xform.
     void updateText(); // update text label position
-    virtual void updateDrawable(BOOL force_damped); // force updates on static objects
+    virtual void updateDrawable(bool force_damped); // force updates on static objects
 
     bool isOwnerInMuteList(LLUUID item_id = LLUUID());
 
-    void setDrawableState(U32 state, BOOL recursive = TRUE);
-    void clearDrawableState(U32 state, BOOL recursive = TRUE);
-    BOOL isDrawableState(U32 state, BOOL recursive = TRUE) const;
+    void setDrawableState(U32 state, bool recursive = true);
+    void clearDrawableState(U32 state, bool recursive = true);
+    bool isDrawableState(U32 state, bool recursive = true) const;
 
     // Called when the drawable shifts
     virtual void onShift(const LLVector4a &shift_vector)    { }
@@ -493,7 +502,7 @@ public:
     // viewer object has the inventory stored locally.
     void registerInventoryListener(LLVOInventoryListener* listener, void* user_data);
     void removeInventoryListener(LLVOInventoryListener* listener);
-    BOOL isInventoryPending();
+    bool isInventoryPending();
     void clearInventoryListeners();
     bool hasInventoryListeners();
     void requestInventory();
@@ -523,12 +532,12 @@ public:
 
     // This function will make sure that we refresh the inventory.
     void dirtyInventory();
-    BOOL isInventoryDirty() { return mInventoryDirty; }
+    bool isInventoryDirty() { return mInventoryDirty; }
 
     // save a script, which involves removing the old one, and rezzing
     // in the new one. This method should be called with the asset id
     // of the new and old script AFTER the bytecode has been saved.
-    void saveScript(const LLViewerInventoryItem* item, BOOL active, bool is_new);
+    void saveScript(const LLViewerInventoryItem* item, bool active, bool is_new);
 
     // move an inventory item out of the task and into agent
     // inventory. This operation is based on messaging. No permissions
@@ -538,37 +547,37 @@ public:
     // Find the number of instances of this object's inventory that are of the given type
     S32 countInventoryContents( LLAssetType::EType type );
 
-    BOOL            permAnyOwner() const;
-    BOOL            permYouOwner() const;
-    BOOL            permGroupOwner() const;
-    BOOL            permOwnerModify() const;
-    BOOL            permModify() const;
-    BOOL            permCopy() const;
-    BOOL            permMove() const;
-    BOOL            permTransfer() const;
-    inline BOOL     flagUsePhysics() const          { return ((mFlags & FLAGS_USE_PHYSICS) != 0); }
-    inline BOOL     flagObjectAnyOwner() const      { return ((mFlags & FLAGS_OBJECT_ANY_OWNER) != 0); }
-    inline BOOL     flagObjectYouOwner() const      { return ((mFlags & FLAGS_OBJECT_YOU_OWNER) != 0); }
-    inline BOOL     flagObjectGroupOwned() const    { return ((mFlags & FLAGS_OBJECT_GROUP_OWNED) != 0); }
-    inline BOOL     flagObjectOwnerModify() const   { return ((mFlags & FLAGS_OBJECT_OWNER_MODIFY) != 0); }
-    inline BOOL     flagObjectModify() const        { return ((mFlags & FLAGS_OBJECT_MODIFY) != 0); }
-    inline BOOL     flagObjectCopy() const          { return ((mFlags & FLAGS_OBJECT_COPY) != 0); }
-    inline BOOL     flagObjectMove() const          { return ((mFlags & FLAGS_OBJECT_MOVE) != 0); }
-    inline BOOL     flagObjectTransfer() const      { return ((mFlags & FLAGS_OBJECT_TRANSFER) != 0); }
-    inline BOOL     flagObjectPermanent() const     { return ((mFlags & FLAGS_AFFECTS_NAVMESH) != 0); }
-    inline BOOL     flagCharacter() const           { return ((mFlags & FLAGS_CHARACTER) != 0); }
-    inline BOOL     flagVolumeDetect() const        { return ((mFlags & FLAGS_VOLUME_DETECT) != 0); }
-    inline BOOL     flagIncludeInSearch() const     { return ((mFlags & FLAGS_INCLUDE_IN_SEARCH) != 0); }
-    inline BOOL     flagScripted() const            { return ((mFlags & FLAGS_SCRIPTED) != 0); }
-    inline BOOL     flagHandleTouch() const         { return ((mFlags & FLAGS_HANDLE_TOUCH) != 0); }
-    inline BOOL     flagTakesMoney() const          { return ((mFlags & FLAGS_TAKES_MONEY) != 0); }
-    inline BOOL     flagPhantom() const             { return ((mFlags & FLAGS_PHANTOM) != 0); }
-    inline BOOL     flagInventoryEmpty() const      { return ((mFlags & FLAGS_INVENTORY_EMPTY) != 0); }
-    inline BOOL     flagAllowInventoryAdd() const   { return ((mFlags & FLAGS_ALLOW_INVENTORY_DROP) != 0); }
-    inline BOOL     flagTemporaryOnRez() const      { return ((mFlags & FLAGS_TEMPORARY_ON_REZ) != 0); }
-    inline BOOL     flagAnimSource() const          { return ((mFlags & FLAGS_ANIM_SOURCE) != 0); }
-    inline BOOL     flagCameraSource() const        { return ((mFlags & FLAGS_CAMERA_SOURCE) != 0); }
-    inline BOOL     flagCameraDecoupled() const     { return ((mFlags & FLAGS_CAMERA_DECOUPLED) != 0); }
+    bool            permAnyOwner() const;
+    bool            permYouOwner() const;
+    bool            permGroupOwner() const;
+    bool            permOwnerModify() const;
+    bool            permModify() const;
+    bool            permCopy() const;
+    bool            permMove() const;
+    bool            permTransfer() const;
+    inline bool     flagUsePhysics() const          { return ((mFlags & FLAGS_USE_PHYSICS) != 0); }
+    inline bool     flagObjectAnyOwner() const      { return ((mFlags & FLAGS_OBJECT_ANY_OWNER) != 0); }
+    inline bool     flagObjectYouOwner() const      { return ((mFlags & FLAGS_OBJECT_YOU_OWNER) != 0); }
+    inline bool     flagObjectGroupOwned() const    { return ((mFlags & FLAGS_OBJECT_GROUP_OWNED) != 0); }
+    inline bool     flagObjectOwnerModify() const   { return ((mFlags & FLAGS_OBJECT_OWNER_MODIFY) != 0); }
+    inline bool     flagObjectModify() const        { return ((mFlags & FLAGS_OBJECT_MODIFY) != 0); }
+    inline bool     flagObjectCopy() const          { return ((mFlags & FLAGS_OBJECT_COPY) != 0); }
+    inline bool     flagObjectMove() const          { return ((mFlags & FLAGS_OBJECT_MOVE) != 0); }
+    inline bool     flagObjectTransfer() const      { return ((mFlags & FLAGS_OBJECT_TRANSFER) != 0); }
+    inline bool     flagObjectPermanent() const     { return ((mFlags & FLAGS_AFFECTS_NAVMESH) != 0); }
+    inline bool     flagCharacter() const           { return ((mFlags & FLAGS_CHARACTER) != 0); }
+    inline bool     flagVolumeDetect() const        { return ((mFlags & FLAGS_VOLUME_DETECT) != 0); }
+    inline bool     flagIncludeInSearch() const     { return ((mFlags & FLAGS_INCLUDE_IN_SEARCH) != 0); }
+    inline bool     flagScripted() const            { return ((mFlags & FLAGS_SCRIPTED) != 0); }
+    inline bool     flagHandleTouch() const         { return ((mFlags & FLAGS_HANDLE_TOUCH) != 0); }
+    inline bool     flagTakesMoney() const          { return ((mFlags & FLAGS_TAKES_MONEY) != 0); }
+    inline bool     flagPhantom() const             { return ((mFlags & FLAGS_PHANTOM) != 0); }
+    inline bool     flagInventoryEmpty() const      { return ((mFlags & FLAGS_INVENTORY_EMPTY) != 0); }
+    inline bool     flagAllowInventoryAdd() const   { return ((mFlags & FLAGS_ALLOW_INVENTORY_DROP) != 0); }
+    inline bool     flagTemporaryOnRez() const      { return ((mFlags & FLAGS_TEMPORARY_ON_REZ) != 0); }
+    inline bool     flagAnimSource() const          { return ((mFlags & FLAGS_ANIM_SOURCE) != 0); }
+    inline bool     flagCameraSource() const        { return ((mFlags & FLAGS_CAMERA_SOURCE) != 0); }
+    inline bool     flagCameraDecoupled() const     { return ((mFlags & FLAGS_CAMERA_DECOUPLED) != 0); }
 
     U8       getPhysicsShapeType() const;
     inline F32      getPhysicsGravity() const       { return mPhysicsGravity; }
@@ -582,7 +591,7 @@ public:
     void setIncludeInSearch(bool include_in_search);
 
     // Does "open" object menu item apply?
-    BOOL allowOpen() const;
+    bool allowOpen() const;
 
     void setClickAction(U8 action) { mClickAction = action; }
     U8 getClickAction() const { return mClickAction; }
@@ -591,10 +600,10 @@ public:
     void            setRegion(LLViewerRegion *regionp);
     virtual void    updateRegion(LLViewerRegion *regionp);
 
-    void updateFlags(BOOL physics_changed = FALSE);
+    void updateFlags(bool physics_changed = false);
     void loadFlags(U32 flags); //load flags from cache or from message
-    BOOL setFlags(U32 flag, BOOL state);
-    BOOL setFlagsWithoutUpdate(U32 flag, BOOL state);
+    bool setFlags(U32 flag, bool state);
+    bool setFlagsWithoutUpdate(U32 flag, bool state);
     void setPhysicsShapeType(U8 type);
     void setPhysicsGravity(F32 gravity);
     void setPhysicsFriction(F32 friction);
@@ -613,11 +622,11 @@ public:
 
     virtual LLNetworkData* getParameterEntry(U16 param_type) const;
     virtual bool setParameterEntry(U16 param_type, const LLNetworkData& new_value, bool local_origin);
-    virtual BOOL getParameterEntryInUse(U16 param_type) const;
-    virtual bool setParameterEntryInUse(U16 param_type, BOOL in_use, bool local_origin);
+    virtual bool getParameterEntryInUse(U16 param_type) const;
+    virtual bool setParameterEntryInUse(U16 param_type, bool in_use, bool local_origin);
     // Called when a parameter is changed
     virtual void parameterChanged(U16 param_type, bool local_origin);
-    virtual void parameterChanged(U16 param_type, LLNetworkData* data, BOOL in_use, bool local_origin);
+    virtual void parameterChanged(U16 param_type, LLNetworkData* data, bool in_use, bool local_origin);
 
     bool isShrinkWrapped() const { return mShouldShrinkWrap; }
 
@@ -643,7 +652,7 @@ public:
 
 public:
     //counter-translation
-    void resetChildrenPosition(const LLVector3& offset, BOOL simplified = FALSE,  BOOL skip_avatar_child = FALSE) ;
+    void resetChildrenPosition(const LLVector3& offset, bool simplified = false,  bool skip_avatar_child = false) ;
     //counter-rotation
     void resetChildrenRotationAndPosition(const std::vector<LLQuaternion>& rotations,
                                             const std::vector<LLVector3>& positions) ;
@@ -721,7 +730,7 @@ public:
 
     // true if user can select this object by clicking under any circumstances (even if pick_unselectable is true)
     // can likely be factored out
-    BOOL            mbCanSelect;
+    bool            mbCanSelect;
 
 private:
     // Grabbed from UPDATE_FLAGS
@@ -736,17 +745,22 @@ public:
     F32             mPhysicsDensity;
     F32             mPhysicsRestitution;
 
+    // set the GLTF asset for this LLViewerObject  to the specified asset id
+    // id MUST be for a GLTF asset (LLAssetType::AT_GLTF)
+    // will relesae any currently held references to a GLTF asset on id change
+    void setGLTFAsset(const LLUUID& id);
+
     // Associated GLTF Asset
-    LLPointer<LL::GLTF::Asset> mGLTFAsset;
+    std::shared_ptr<LL::GLTF::Asset> mGLTFAsset;
 
     // Pipeline classes
     LLPointer<LLDrawable> mDrawable;
 
     // Band-aid to select object after all creation initialization is done
-    BOOL mCreateSelected;
+    bool mCreateSelected;
 
     // Replace textures with web pages on this object while drawing
-    BOOL mRenderMedia;
+    bool mRenderMedia;
 
     bool mRiggedAttachedWarned;
 
@@ -760,7 +774,7 @@ public:
     std::string mHudText;
     LLColor4 mHudTextColor;
 
-    static          BOOL        sUseSharedDrawables;
+    static          bool        sUseSharedDrawables;
 
 public:
     // Returns mControlAvatar for the edit root prim of this linkset
@@ -795,10 +809,8 @@ protected:
 
     static LLViewerObject *createObject(const LLUUID &id, LLPCode pcode, LLViewerRegion *regionp, S32 flags = 0);
 
-    BOOL setData(const U8 *datap, const U32 data_size);
-
     // Hide or show HUD, icon and particles
-    void    hideExtraDisplayItems( BOOL hidden );
+    void    hideExtraDisplayItems( bool hidden );
 
     //////////////////////////
     //
@@ -806,11 +818,11 @@ protected:
     //
 
     static void processTaskInvFile(void** user_data, S32 error_code, LLExtStat ext_status);
-    BOOL loadTaskInvFile(const std::string& filename);
+    bool loadTaskInvFile(const std::string& filename);
     void loadTaskInvLLSD(const LLSD &inv_result);
     void doInventoryCallback();
 
-    BOOL isOnMap();
+    bool isOnMap();
 
     void unpackParticleSource(const S32 block_num, const LLUUID& owner_id);
     void unpackParticleSource(LLDataPacker &dp, const LLUUID& owner_id, bool legacy);
@@ -871,15 +883,15 @@ protected:
     };
     EInventoryRequestState  mInvRequestState;
     U64                     mInvRequestXFerId;
-    BOOL                    mInventoryDirty;
+    bool                    mInventoryDirty;
 
     LLViewerRegion  *mRegionp;                  // Region that this object belongs to.
-    BOOL            mDead;
-    BOOL            mOrphaned;                  // This is an orphaned child
-    BOOL            mUserSelected;              // Cached user select information
-    BOOL            mOnActiveList;
-    BOOL            mOnMap;                     // On the map.
-    BOOL            mStatic;                    // Object doesn't move.
+    bool            mDead;
+    bool            mOrphaned;                  // This is an orphaned child
+    bool            mUserSelected;              // Cached user select information
+    bool            mOnActiveList;
+    bool            mOnMap;                     // On the map.
+    bool            mStatic;                    // Object doesn't move.
     S32             mSeatCount;
     S32             mNumFaces;
 
@@ -903,11 +915,11 @@ protected:
 
     static          U32         sNumZombieObjects;          // Objects which are dead, but not deleted
 
-    static          BOOL        sMapDebug;                  // Map render mode
+    static          bool        sMapDebug;                  // Map render mode
     static          LLColor4    sEditSelectColor;
     static          LLColor4    sNoEditSelectColor;
     static          F32         sCurrentPulse;
-    static          BOOL        sPulseEnabled;
+    static          bool        sPulseEnabled;
 
     static          S32         sAxisArrowLength;
 
@@ -920,8 +932,8 @@ protected:
     static void setMaxUpdateInterpolationTime(F32 value)        { sMaxUpdateInterpolationTime = (F64Seconds) value; }
     static void setMaxRegionCrossingInterpolationTime(F32 value)        { sMaxRegionCrossingInterpolationTime = (F64Seconds) value; }
 
-    static void setVelocityInterpolate(BOOL value)      { sVelocityInterpolate = value; }
-    static void setPingInterpolate(BOOL value)          { sPingInterpolate = value; }
+    static void setVelocityInterpolate(bool value)      { sVelocityInterpolate = value; }
+    static void setPingInterpolate(bool value)          { sPingInterpolate = value; }
 
 private:
     static S32 sNumObjects;
@@ -930,8 +942,8 @@ private:
     static F64Seconds sMaxUpdateInterpolationTime;          // For motion interpolation
     static F64Seconds sMaxRegionCrossingInterpolationTime;          // For motion interpolation
 
-    static BOOL sVelocityInterpolate;
-    static BOOL sPingInterpolate;
+    static bool sVelocityInterpolate;
+    static bool sPingInterpolate;
 
     bool mCachedOwnerInMuteList;
     F64 mCachedMuteListUpdateTime;
@@ -945,8 +957,8 @@ public:
     const LLUUID &extractAttachmentItemID(); // find&set the inventory item ID of the attached object
     EObjectUpdateType getLastUpdateType() const;
     void setLastUpdateType(EObjectUpdateType last_update_type);
-    BOOL getLastUpdateCached() const;
-    void setLastUpdateCached(BOOL last_update_cached);
+    bool getLastUpdateCached() const;
+    void setLastUpdateCached(bool last_update_cached);
 
     virtual void updateRiggingInfo() {}
 
@@ -955,7 +967,7 @@ public:
 private:
     LLUUID mAttachmentItemID; // ItemID of the associated object is in user inventory.
     EObjectUpdateType   mLastUpdateType;
-    BOOL    mLastUpdateCached;
+    bool    mLastUpdateCached;
 
 public:
     // reflection probe state
@@ -974,14 +986,14 @@ public:
 //
 //
 
-inline void LLViewerObject::setRotation(const LLQuaternion& quat, BOOL damped)
+inline void LLViewerObject::setRotation(const LLQuaternion& quat, bool damped)
 {
     LLPrimitive::setRotation(quat);
     setChanged(ROTATED | SILHOUETTE);
     updateDrawable(damped);
 }
 
-inline void LLViewerObject::setRotation(const F32 x, const F32 y, const F32 z, BOOL damped)
+inline void LLViewerObject::setRotation(const F32 x, const F32 y, const F32 z, bool damped)
 {
     LLPrimitive::setRotation(x, y, z);
     setChanged(ROTATED | SILHOUETTE);
@@ -991,10 +1003,10 @@ inline void LLViewerObject::setRotation(const F32 x, const F32 y, const F32 z, B
 class LLViewerObjectMedia
 {
 public:
-    LLViewerObjectMedia() : mMediaURL(), mPassedWhitelist(FALSE), mMediaType(0) { }
+    LLViewerObjectMedia() : mMediaURL(), mPassedWhitelist(false), mMediaType(0) { }
 
     std::string mMediaURL;  // for web pages on surfaces, one per prim
-    BOOL mPassedWhitelist;  // user has OK'd display
+    bool mPassedWhitelist;  // user has OK'd display
     U8 mMediaType;          // see LLTextureEntry::WEB_PAGE, etc.
 };
 
@@ -1023,11 +1035,11 @@ public:
 class LLStaticViewerObject : public LLViewerObject
 {
 public:
-    LLStaticViewerObject(const LLUUID& id, const LLPCode pcode, LLViewerRegion* regionp, BOOL is_global = FALSE)
+    LLStaticViewerObject(const LLUUID& id, const LLPCode pcode, LLViewerRegion* regionp, bool is_global = false)
         : LLViewerObject(id,pcode,regionp, is_global)
     { }
 
-    virtual void updateDrawable(BOOL force_damped);
+    virtual void updateDrawable(bool force_damped);
 };
 
 
diff --git a/indra/newview/llviewerobjectlist.cpp b/indra/newview/llviewerobjectlist.cpp
index 49bd5007c4..08a1ba0f9b 100644
--- a/indra/newview/llviewerobjectlist.cpp
+++ b/indra/newview/llviewerobjectlist.cpp
@@ -86,7 +86,7 @@
 #include <iterator>
 
 extern F32 gMinObjectDistance;
-extern BOOL gAnimateTextures;
+extern bool gAnimateTextures;
 
 #define MAX_CONCURRENT_PHYSICS_REQUESTS 256
 
@@ -109,7 +109,7 @@ LLViewerObjectList::LLViewerObjectList()
     mNumDeadObjects = 0;
     mNumOrphans = 0;
     mNumNewObjects = 0;
-    mWasPaused = FALSE;
+    mWasPaused = false;
     mNumDeadObjectUpdates = 0;
     mNumUnknownUpdates = 0;
 }
@@ -167,7 +167,7 @@ U64 LLViewerObjectList::getIndex(const U32 local_id,
     return (((U64)index) << 32) | (U64)local_id;
 }
 
-BOOL LLViewerObjectList::removeFromLocalIDTable(const LLViewerObject* objectp)
+bool LLViewerObjectList::removeFromLocalIDTable(const LLViewerObject* objectp)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_NETWORK;
 
@@ -186,21 +186,21 @@ BOOL LLViewerObjectList::removeFromLocalIDTable(const LLViewerObject* objectp)
         std::map<U64, LLUUID>::iterator iter = sIndexAndLocalIDToUUID.find(indexid);
         if (iter == sIndexAndLocalIDToUUID.end())
         {
-            return FALSE;
+            return false;
         }
 
         // Found existing entry
         if (iter->second == objectp->getID())
         {   // Full UUIDs match, so remove the entry
             sIndexAndLocalIDToUUID.erase(iter);
-            return TRUE;
+            return true;
         }
         // UUIDs did not match - this would zap a valid entry, so don't erase it
         //LL_INFOS() << "Tried to erase entry where id in table ("
         //      << iter->second << ") did not match object " << object.getID() << LL_ENDL;
     }
 
-    return FALSE ;
+    return false ;
 }
 
 void LLViewerObjectList::setUUIDAndLocal(const LLUUID &id,
@@ -391,7 +391,7 @@ LLViewerObject* LLViewerObjectList::processObjectUpdateFromCache(LLVOCacheEntry*
     else
     {
         objectp->setLastUpdateType(OUT_FULL_COMPRESSED); //newly cached
-        objectp->setLastUpdateCached(TRUE);
+        objectp->setLastUpdateCached(true);
     }
     LLVOAvatar::cullAvatarsByPixelArea();
 
@@ -471,7 +471,7 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
 
     for (i = 0; i < num_objects; i++)
     {
-        BOOL justCreated = FALSE;
+        bool justCreated = false;
         bool update_cache = false; //update object cache if it is a full-update or terse update
 
         if (compressed)
@@ -646,7 +646,7 @@ void LLViewerObjectList::processObjectUpdate(LLMessageSystem *mesgsys,
                 continue;
             }
 
-            justCreated = TRUE;
+            justCreated = true;
             mNumNewObjects++;
         }
 
@@ -1318,7 +1318,7 @@ void LLViewerObjectList::cleanupReferences(LLViewerObject *objectp)
     if (objectp->onActiveList())
     {
         //LL_INFOS() << "Removing " << objectp->mID << " " << objectp->getPCodeString() << " from active list in cleanupReferences." << LL_ENDL;
-        objectp->setOnActiveList(FALSE);
+        objectp->setOnActiveList(false);
         removeFromActiveList(objectp);
     }
 
@@ -1335,7 +1335,7 @@ void LLViewerObjectList::cleanupReferences(LLViewerObject *objectp)
     }
 }
 
-BOOL LLViewerObjectList::killObject(LLViewerObject *objectp)
+bool LLViewerObjectList::killObject(LLViewerObject *objectp)
 {
     LL_PROFILE_ZONE_SCOPED;
     // Don't ever kill gAgentAvatarp, just force it to the agent's region
@@ -1343,7 +1343,7 @@ BOOL LLViewerObjectList::killObject(LLViewerObject *objectp)
     if ((objectp == gAgentAvatarp) && gAgent.getRegion())
     {
         objectp->setRegion(gAgent.getRegion());
-        return FALSE;
+        return false;
     }
 
     // When we're killing objects, all we do is mark them as dead.
@@ -1356,10 +1356,10 @@ BOOL LLViewerObjectList::killObject(LLViewerObject *objectp)
         // so create a pointer to make sure object will stay alive untill markDead() finishes
         LLPointer<LLViewerObject> sp(objectp);
         sp->markDead(); // does the right thing if object already dead
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLViewerObjectList::killObjects(LLViewerRegion *regionp)
@@ -1379,7 +1379,7 @@ void LLViewerObjectList::killObjects(LLViewerRegion *regionp)
     }
 
     // Have to clean right away because the region is becoming invalid.
-    cleanDeadObjects(FALSE);
+    cleanDeadObjects(false);
 }
 
 void LLViewerObjectList::killAllObjects()
@@ -1395,7 +1395,7 @@ void LLViewerObjectList::killAllObjects()
         llassert((objectp == gAgentAvatarp) || objectp->isDead());
     }
 
-    cleanDeadObjects(FALSE);
+    cleanDeadObjects(false);
 
     if(!mObjects.empty())
     {
@@ -1416,7 +1416,7 @@ void LLViewerObjectList::killAllObjects()
     }
 }
 
-void LLViewerObjectList::cleanDeadObjects(BOOL use_timer)
+void LLViewerObjectList::cleanDeadObjects(bool use_timer)
 {
     if (!mNumDeadObjects)
     {
@@ -1480,7 +1480,7 @@ void LLViewerObjectList::removeFromActiveList(LLViewerObject* objectp)
 
         objectp->setListIndex(-1);
 
-        S32 last_index = mActiveObjects.size()-1;
+        S32 last_index = static_cast<S32>(mActiveObjects.size()) - 1;
 
         if (idx != last_index)
         {
@@ -1501,7 +1501,7 @@ void LLViewerObjectList::updateActive(LLViewerObject *objectp)
         return; // We don't update dead objects!
     }
 
-    BOOL active = objectp->isActive();
+    bool active = objectp->isActive();
     if (active != objectp->onActiveList())
     {
         if (active)
@@ -1511,8 +1511,8 @@ void LLViewerObjectList::updateActive(LLViewerObject *objectp)
             if (idx <= -1)
             {
                 mActiveObjects.push_back(objectp);
-                objectp->setListIndex(mActiveObjects.size()-1);
-            objectp->setOnActiveList(TRUE);
+                objectp->setListIndex(static_cast<S32>(mActiveObjects.size()) - 1);
+            objectp->setOnActiveList(true);
         }
         else
         {
@@ -1530,7 +1530,7 @@ void LLViewerObjectList::updateActive(LLViewerObject *objectp)
         {
             //LL_INFOS() << "Removing " << objectp->mID << " " << objectp->getPCodeString() << " from active list." << LL_ENDL;
             removeFromActiveList(objectp);
-            objectp->setOnActiveList(FALSE);
+            objectp->setOnActiveList(false);
         }
     }
 
@@ -1804,7 +1804,7 @@ void LLViewerObjectList::renderObjectBounds(const LLVector3 &center)
 {
 }
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 void LLViewerObjectList::addDebugBeacon(const LLVector3 &pos_agent,
                                         const std::string &string,
@@ -1953,7 +1953,7 @@ void LLViewerObjectList::orphanize(LLViewerObject *childp, U32 parent_id, U32 ip
     LL_DEBUGS("ORPHANS") << "Orphaning object " << childp->getID() << " with parent " << parent_id << LL_ENDL;
 
     // We're an orphan, flag things appropriately.
-    childp->mOrphaned = TRUE;
+    childp->mOrphaned = true;
     if (childp->mDrawable.notNull())
     {
         bool make_invisible = true;
@@ -2026,7 +2026,7 @@ void LLViewerObjectList::findOrphans(LLViewerObject* objectp, U32 ip, U32 port)
     }
 
     U64 parent_info = getIndex(objectp->mLocalID, ip, port);
-    BOOL orphans_found = FALSE;
+    bool orphans_found = false;
     // Iterate through the orphan list, and set parents of matching children.
 
     for (std::vector<OrphanInfo>::iterator iter = mOrphanChildren.begin(); iter != mOrphanChildren.end(); )
@@ -2058,7 +2058,7 @@ void LLViewerObjectList::findOrphans(LLViewerObject* objectp, U32 ip, U32 port)
             objectp->setChanged(LLXform::MOVED | LLXform::SILHOUETTE);
 
             // Flag the object as no longer orphaned
-            childp->mOrphaned = FALSE;
+            childp->mOrphaned = false;
             if (childp->mDrawable.notNull())
             {
                 // Make the drawable visible again and set the drawable parent
@@ -2068,10 +2068,10 @@ void LLViewerObjectList::findOrphans(LLViewerObject* objectp, U32 ip, U32 port)
             }
 
             // Make certain particles, icon and HUD aren't hidden
-            childp->hideExtraDisplayItems( FALSE );
+            childp->hideExtraDisplayItems( false );
 
             objectp->addChild(childp);
-            orphans_found = TRUE;
+            orphans_found = true;
             ++iter;
         }
         else
diff --git a/indra/newview/llviewerobjectlist.h b/indra/newview/llviewerobjectlist.h
index fcf4d7ff98..f0f236d6ae 100644
--- a/indra/newview/llviewerobjectlist.h
+++ b/indra/newview/llviewerobjectlist.h
@@ -74,11 +74,11 @@ public:
 
     LLViewerObject *replaceObject(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp); // TomY: hack to switch VO instances on the fly
 
-    BOOL killObject(LLViewerObject *objectp);
+    bool killObject(LLViewerObject *objectp);
     void killObjects(LLViewerRegion *regionp); // Kill all objects owned by a particular region.
     void killAllObjects();
 
-    void cleanDeadObjects(const BOOL use_timer = TRUE); // Clean up the dead object list.
+    void cleanDeadObjects(const bool use_timer = true); // Clean up the dead object list.
 
     // Simulator and viewer side object updates...
     void processUpdateCore(LLViewerObject* objectp, void** data, U32 block, const EObjectUpdateType update_type,
@@ -169,7 +169,7 @@ public:
 
     // if we paused in the last frame
     // used to discount stats from this frame
-    BOOL mWasPaused;
+    bool mWasPaused;
 
     static void getUUIDFromLocal(LLUUID &id,
                                 const U32 local_id,
@@ -180,7 +180,7 @@ public:
                                 const U32 ip,
                                 const U32 port); // Requires knowledge of message system info!
 
-    static BOOL removeFromLocalIDTable(const LLViewerObject* objectp);
+    static bool removeFromLocalIDTable(const LLViewerObject* objectp);
     // Used ONLY by the orphaned object code.
     static U64 getIndex(const U32 local_id, const U32 ip, const U32 port);
 
diff --git a/indra/newview/llvieweroctree.cpp b/indra/newview/llvieweroctree.cpp
index 3763af7aa8..a1c2e0f9ff 100644
--- a/indra/newview/llvieweroctree.cpp
+++ b/indra/newview/llvieweroctree.cpp
@@ -38,7 +38,7 @@
 //static variables definitions
 //-----------------------------------------------------------------------------------
 U32 LLViewerOctreeEntryData::sCurVisible = 10; //reserve the low numbers for special use.
-BOOL LLViewerOctreeDebug::sInDebug = FALSE;
+bool LLViewerOctreeDebug::sInDebug = false;
 
 static LLTrace::CountStatHandle<S32> sOcclusionQueries("occlusion_queries", "Number of occlusion queries executed"),
                                      sNumObjectsOccluded("occluded_objects", "Count of objects being occluded by a query"),
@@ -566,7 +566,7 @@ void LLViewerOctreeGroup::rebound()
     }
     else if (mOctreeNode->getChildCount() == 0)
     { //copy object bounding box if this is a leaf
-        boundObjects(TRUE, mExtents[0], mExtents[1]);
+        boundObjects(true, mExtents[0], mExtents[1]);
         mBounds[0] = mObjectBounds[0];
         mBounds[1] = mObjectBounds[1];
     }
@@ -594,7 +594,7 @@ void LLViewerOctreeGroup::rebound()
             newMin.setMin(newMin, min);
         }
 
-        boundObjects(FALSE, newMin, newMax);
+        boundObjects(false, newMin, newMax);
 
         mBounds[0].setAdd(newMin, newMax);
         mBounds[0].mul(0.5f);
@@ -700,7 +700,7 @@ LLViewerOctreeGroup* LLViewerOctreeGroup::getParent()
 }
 
 //virtual
-bool LLViewerOctreeGroup::boundObjects(BOOL empty, LLVector4a& minOut, LLVector4a& maxOut)
+bool LLViewerOctreeGroup::boundObjects(bool empty, LLVector4a& minOut, LLVector4a& maxOut)
 {
     const OctreeNode* node = mOctreeNode;
 
@@ -754,19 +754,19 @@ bool LLViewerOctreeGroup::boundObjects(BOOL empty, LLVector4a& minOut, LLVector4
         maxOut.setMax(maxOut, newMax);
     }
 
-    return TRUE;
+    return true;
 }
 
 //virtual
-BOOL LLViewerOctreeGroup::isVisible() const
+bool LLViewerOctreeGroup::isVisible() const
 {
-    return mVisible[LLViewerCamera::sCurCameraID] >= LLViewerOctreeEntryData::getCurrentFrame() ? TRUE : FALSE;
+    return mVisible[LLViewerCamera::sCurCameraID] >= LLViewerOctreeEntryData::getCurrentFrame();
 }
 
 //virtual
-BOOL LLViewerOctreeGroup::isRecentlyVisible() const
+bool LLViewerOctreeGroup::isRecentlyVisible() const
 {
-    return FALSE;
+    return false;
 }
 
 void LLViewerOctreeGroup::setVisible()
@@ -886,18 +886,18 @@ LLOcclusionCullingGroup::~LLOcclusionCullingGroup()
     releaseOcclusionQueryObjectNames();
 }
 
-BOOL LLOcclusionCullingGroup::needsUpdate()
+bool LLOcclusionCullingGroup::needsUpdate()
 {
-    return (LLDrawable::getCurrentFrame() % mSpatialPartition->mLODPeriod == mLODHash) ? TRUE : FALSE;
+    return LLDrawable::getCurrentFrame() % mSpatialPartition->mLODPeriod == mLODHash;
 }
 
-BOOL LLOcclusionCullingGroup::isRecentlyVisible() const
+bool LLOcclusionCullingGroup::isRecentlyVisible() const
 {
     const S32 MIN_VIS_FRAME_RANGE = 2;
     return (LLDrawable::getCurrentFrame() - mVisible[LLViewerCamera::sCurCameraID]) < MIN_VIS_FRAME_RANGE ;
 }
 
-BOOL LLOcclusionCullingGroup::isAnyRecentlyVisible() const
+bool LLOcclusionCullingGroup::isAnyRecentlyVisible() const
 {
     const S32 MIN_VIS_FRAME_RANGE = 2;
     return (LLDrawable::getCurrentFrame() - mAnyVisible) < MIN_VIS_FRAME_RANGE ;
@@ -906,7 +906,7 @@ BOOL LLOcclusionCullingGroup::isAnyRecentlyVisible() const
 //virtual
 void LLOcclusionCullingGroup::handleChildAddition(const OctreeNode* parent, OctreeNode* child)
 {
-    if (child->getListenerCount() == 0)
+    if (!child->hasListeners())
     {
         new LLOcclusionCullingGroup(child, mSpatialPartition);
     }
@@ -1055,12 +1055,12 @@ void LLOcclusionCullingGroup::clearOcclusionState(U32 state, S32 mode /* = STATE
     }
 }
 
-BOOL LLOcclusionCullingGroup::earlyFail(LLCamera* camera, const LLVector4a* bounds)
+bool LLOcclusionCullingGroup::earlyFail(LLCamera* camera, const LLVector4a* bounds)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_OCTREE;
     if (camera->getOrigin().isExactlyZero())
     {
-        return FALSE;
+        return false;
     }
 
     const F32 vel = SG_OCCLUSION_FUDGE*2.f;
@@ -1073,7 +1073,7 @@ BOOL LLOcclusionCullingGroup::earlyFail(LLCamera* camera, const LLVector4a* boun
 
     /*if (r.magVecSquared() > 1024.0*1024.0)
     {
-        return TRUE;
+        return true;
     }*/
 
     LLVector4a e;
@@ -1087,16 +1087,16 @@ BOOL LLOcclusionCullingGroup::earlyFail(LLCamera* camera, const LLVector4a* boun
     S32 lt = e.lessThan(min).getGatheredBits() & 0x7;
     if (lt)
     {
-        return FALSE;
+        return false;
     }
 
     S32 gt = e.greaterThan(max).getGatheredBits() & 0x7;
     if (gt)
     {
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 U32 LLOcclusionCullingGroup::getLastOcclusionIssuedTime()
@@ -1135,7 +1135,7 @@ void LLOcclusionCullingGroup::checkOcclusion()
                 mOcclusionCheckCount[LLViewerCamera::sCurCameraID]++;
             }
 
-            static LLCachedControl<S32> occlusion_timeout(gSavedSettings, "RenderOcclusionTimeout", 4);
+            static LLCachedControl<U32> occlusion_timeout(gSavedSettings, "RenderOcclusionTimeout", 4);
 
             if (available || mOcclusionCheckCount[LLViewerCamera::sCurCameraID] > occlusion_timeout)
             {
@@ -1309,7 +1309,7 @@ void LLOcclusionCullingGroup::doOcclusion(LLCamera* camera, const LLVector4a* sh
 //-----------------------------------------------------------------------------------
 LLViewerOctreePartition::LLViewerOctreePartition() :
     mRegionp(NULL),
-    mOcclusionEnabled(TRUE),
+    mOcclusionEnabled(true),
     mDrawableType(0),
     mLODSeed(0),
     mLODPeriod(1)
@@ -1332,7 +1332,7 @@ void LLViewerOctreePartition::cleanup()
     mOctree = nullptr;
 }
 
-BOOL LLViewerOctreePartition::isOcclusionEnabled()
+bool LLViewerOctreePartition::isOcclusionEnabled()
 {
     return mOcclusionEnabled || LLPipeline::sUseOcclusion > 2;
 }
diff --git a/indra/newview/llvieweroctree.h b/indra/newview/llvieweroctree.h
index 2a072056df..60e17a6f58 100644
--- a/indra/newview/llvieweroctree.h
+++ b/indra/newview/llvieweroctree.h
@@ -213,11 +213,11 @@ public:
     virtual void unbound();
     virtual void rebound();
 
-    BOOL isDead()                           { return hasState(DEAD); }
+    bool isDead()                           { return hasState(DEAD); }
 
     void setVisible();
-    BOOL isVisible() const;
-    virtual BOOL isRecentlyVisible() const;
+    bool isVisible() const;
+    virtual bool isRecentlyVisible() const;
     S32  getVisible(LLViewerCamera::eCameraID id) const {return mVisible[id];}
     S32  getAnyVisible() const {return mAnyVisible;}
     bool isEmpty() const { return mOctreeNode->isEmpty(); }
@@ -253,7 +253,7 @@ public:
 protected:
     void checkStates();
 private:
-    virtual bool boundObjects(BOOL empty, LLVector4a& minOut, LLVector4a& maxOut);
+    virtual bool boundObjects(bool empty, LLVector4a& minOut, LLVector4a& maxOut);
 
 protected:
     U32         mState;
@@ -305,19 +305,19 @@ public:
     void clearOcclusionState(U32 state, S32 mode = STATE_MODE_SINGLE);
     void checkOcclusion(); //read back last occlusion query (if any)
     void doOcclusion(LLCamera* camera, const LLVector4a* shift = NULL); //issue occlusion query
-    BOOL isOcclusionState(U32 state) const  { return mOcclusionState[LLViewerCamera::sCurCameraID] & state ? TRUE : FALSE; }
-    U32  getOcclusionState() const  { return mOcclusionState[LLViewerCamera::sCurCameraID];}
+    bool isOcclusionState(U32 state) const { return mOcclusionState[LLViewerCamera::sCurCameraID] & state; }
+    U32  getOcclusionState() const { return mOcclusionState[LLViewerCamera::sCurCameraID];}
 
-    BOOL needsUpdate();
+    bool needsUpdate();
     U32  getLastOcclusionIssuedTime();
 
     //virtual
     void handleChildAddition(const OctreeNode* parent, OctreeNode* child);
 
     //virtual
-    BOOL isRecentlyVisible() const;
+    bool isRecentlyVisible() const;
     LLViewerOctreePartition* getSpatialPartition()const {return mSpatialPartition;}
-    BOOL isAnyRecentlyVisible() const;
+    bool isAnyRecentlyVisible() const;
 
     static U32 getNewOcclusionQueryObjectName();
     static void releaseOcclusionQueryObjectName(U32 name);
@@ -326,7 +326,7 @@ protected:
     void releaseOcclusionQueryObjectNames();
 
 private:
-    BOOL earlyFail(LLCamera* camera, const LLVector4a* bounds);
+    bool earlyFail(LLCamera* camera, const LLVector4a* bounds);
 
 protected:
     U32         mOcclusionState[LLViewerCamera::NUM_CAMERAS];
@@ -350,7 +350,7 @@ public:
 
     // Cull on arbitrary frustum
     virtual S32 cull(LLCamera &camera, bool do_occlusion) = 0;
-    BOOL isOcclusionEnabled();
+    bool isOcclusionEnabled();
 
 protected:
     // MUST call from destructor of any derived classes (SL-17276)
@@ -361,7 +361,7 @@ public:
     U32              mDrawableType;
     OctreeNode*      mOctree;
     LLViewerRegion*  mRegionp; // the region this partition belongs to.
-    BOOL             mOcclusionEnabled; // if TRUE, occlusion culling is performed
+    bool             mOcclusionEnabled; // if true, occlusion culling is performed
     U32              mLODSeed;
     U32              mLODPeriod;    //number of frames between LOD updates for a given spatial group (staggered by mLODSeed)
 };
@@ -419,7 +419,7 @@ public:
     virtual void visit(const OctreeNode* branch);
 
 public:
-    static BOOL sInDebug;
+    static bool sInDebug;
 };
 
 #endif
diff --git a/indra/newview/llviewerparcelmedia.cpp b/indra/newview/llviewerparcelmedia.cpp
index bc9c2c7128..9af0062f1e 100644
--- a/indra/newview/llviewerparcelmedia.cpp
+++ b/indra/newview/llviewerparcelmedia.cpp
@@ -400,8 +400,8 @@ void LLViewerParcelMedia::processParcelMediaUpdate( LLMessageSystem *msg)
     std::string media_type;
     S32 media_width = 0;
     S32 media_height = 0;
-    U8 media_auto_scale = FALSE;
-    U8 media_loop = FALSE;
+    U8 media_auto_scale = 0;
+    U8 media_loop = 0;
 
     msg->getUUID( "DataBlock", "MediaID", media_id );
     char media_url_buffer[257];
@@ -420,16 +420,15 @@ void LLViewerParcelMedia::processParcelMediaUpdate( LLMessageSystem *msg)
     }
 
     LLParcel *parcel = LLViewerParcelMgr::getInstance()->getAgentParcel();
-    BOOL same = FALSE;
     if (parcel)
     {
-        same = ((parcel->getMediaURL() == media_url) &&
-                (parcel->getMediaType() == media_type) &&
-                (parcel->getMediaID() == media_id) &&
-                (parcel->getMediaWidth() == media_width) &&
-                (parcel->getMediaHeight() == media_height) &&
-                (parcel->getMediaAutoScale() == media_auto_scale) &&
-                (parcel->getMediaLoop() == media_loop));
+        bool same = ((parcel->getMediaURL() == media_url) &&
+                     (parcel->getMediaType() == media_type) &&
+                     (parcel->getMediaID() == media_id) &&
+                     (parcel->getMediaWidth() == media_width) &&
+                     (parcel->getMediaHeight() == media_height) &&
+                     (parcel->getMediaAutoScale() == media_auto_scale) &&
+                     (parcel->getMediaLoop() == media_loop));
 
         if (!same)
         {
diff --git a/indra/newview/llviewerparcelmediaautoplay.cpp b/indra/newview/llviewerparcelmediaautoplay.cpp
index 6e0db94985..41bc5c8cfa 100644
--- a/indra/newview/llviewerparcelmediaautoplay.cpp
+++ b/indra/newview/llviewerparcelmediaautoplay.cpp
@@ -49,7 +49,7 @@ LLViewerParcelMediaAutoPlay::LLViewerParcelMediaAutoPlay() :
     LLEventTimer(1),
 
     mLastParcelID(-1),
-    mPlayed(FALSE),
+    mPlayed(false),
     mTimeInParcel(0)
 {
 }
@@ -57,10 +57,10 @@ LLViewerParcelMediaAutoPlay::LLViewerParcelMediaAutoPlay() :
 // static
 void LLViewerParcelMediaAutoPlay::playStarted()
 {
-    LLSingleton<LLViewerParcelMediaAutoPlay>::getInstance()->mPlayed = TRUE;
+    LLSingleton<LLViewerParcelMediaAutoPlay>::getInstance()->mPlayed = true;
 }
 
-BOOL LLViewerParcelMediaAutoPlay::tick()
+bool LLViewerParcelMediaAutoPlay::tick()
 {
     LLParcel *this_parcel = NULL;
     LLViewerRegion *this_region = NULL;
@@ -94,7 +94,7 @@ BOOL LLViewerParcelMediaAutoPlay::tick()
         this_region_id != mLastRegionID)
     {
         // we've entered a new parcel
-        mPlayed    = FALSE;                   // we haven't autoplayed yet
+        mPlayed    = false;                   // we haven't autoplayed yet
         mTimeInParcel = 0;                    // reset our timer
         mLastParcelID = this_parcel_id;
         mLastRegionID = this_region_id;
@@ -110,7 +110,7 @@ BOOL LLViewerParcelMediaAutoPlay::tick()
     {
         if (this_media_texture_id.notNull())    // and if the media texture is good
         {
-            LLViewerMediaTexture *image = LLViewerTextureManager::getMediaTexture(this_media_texture_id, FALSE) ;
+            LLViewerMediaTexture *image = LLViewerTextureManager::getMediaTexture(this_media_texture_id, false) ;
 
             F32 image_size = 0;
 
@@ -149,14 +149,14 @@ BOOL LLViewerParcelMediaAutoPlay::tick()
                         }
                     }
 
-                    mPlayed = TRUE;
+                    mPlayed = true;
                 }
             }
         }
     }
 
 
-    return FALSE; // continue ticking forever please.
+    return false; // continue ticking forever please.
 }
 
 //static
diff --git a/indra/newview/llviewerparcelmediaautoplay.h b/indra/newview/llviewerparcelmediaautoplay.h
index ee228e8425..96b569f126 100644
--- a/indra/newview/llviewerparcelmediaautoplay.h
+++ b/indra/newview/llviewerparcelmediaautoplay.h
@@ -35,7 +35,7 @@ class LLViewerParcelMediaAutoPlay : LLEventTimer, public LLSingleton<LLViewerPar
 {
     LLSINGLETON(LLViewerParcelMediaAutoPlay);
 public:
-    virtual BOOL tick() override;
+    virtual bool tick() override;
     static void playStarted();
 
  private:
@@ -45,7 +45,7 @@ public:
  private:
     S32 mLastParcelID;
     LLUUID mLastRegionID;
-    BOOL mPlayed;
+    bool mPlayed;
     F32 mTimeInParcel;
 };
 
diff --git a/indra/newview/llviewerparcelmgr.cpp b/indra/newview/llviewerparcelmgr.cpp
index 17c0d00e79..8c24b2438b 100644
--- a/indra/newview/llviewerparcelmgr.cpp
+++ b/indra/newview/llviewerparcelmgr.cpp
@@ -116,7 +116,7 @@ struct LLGodForceOwnerData
 // Methods
 //
 LLViewerParcelMgr::LLViewerParcelMgr()
-:   mSelected(FALSE),
+:   mSelected(false),
     mRequestResult(0),
     mWestSouth(),
     mEastNorth(),
@@ -126,8 +126,8 @@ LLViewerParcelMgr::LLViewerParcelMgr()
     mHoverWestSouth(),
     mHoverEastNorth(),
     mTeleportInProgressPosition(),
-    mRenderCollision(FALSE),
-    mRenderSelection(TRUE),
+    mRenderCollision(false),
+    mRenderSelection(true),
     mCollisionBanned(0),
     mCollisionTimer(),
     mMediaParcelId(0),
@@ -151,8 +151,8 @@ LLViewerParcelMgr::LLViewerParcelMgr()
     // JC: Resolved a merge conflict here, eliminated
     // mBlockedImage->setAddressMode(LLTexUnit::TAM_WRAP);
     // because it is done in llviewertexturelist.cpp
-    mBlockedImage = LLViewerTextureManager::getFetchedTextureFromFile("world/NoEntryLines.png", FTT_LOCAL_FILE, TRUE, LLGLTexture::BOOST_UI);
-    mPassImage = LLViewerTextureManager::getFetchedTextureFromFile("world/NoEntryPassLines.png", FTT_LOCAL_FILE, TRUE, LLGLTexture::BOOST_UI);
+    mBlockedImage = LLViewerTextureManager::getFetchedTextureFromFile("world/NoEntryLines.png", FTT_LOCAL_FILE, true, LLGLTexture::BOOST_UI);
+    mPassImage = LLViewerTextureManager::getFetchedTextureFromFile("world/NoEntryPassLines.png", FTT_LOCAL_FILE, true, LLGLTexture::BOOST_UI);
 
     S32 overlay_size = mParcelsPerEdge * mParcelsPerEdge / PARCEL_OVERLAY_CHUNKS;
     sPackedOverlay = new U8[overlay_size];
@@ -164,7 +164,7 @@ LLViewerParcelMgr::LLViewerParcelMgr()
         mAgentParcelOverlay[i] = 0;
     }
 
-    mTeleportInProgress = TRUE; // the initial parcel update is treated like teleport
+    mTeleportInProgress = true; // the initial parcel update is treated like teleport
 }
 
 
@@ -234,13 +234,13 @@ LLViewerRegion* LLViewerParcelMgr::getSelectionRegion()
 
 void LLViewerParcelMgr::getDisplayInfo(S32* area_out, S32* claim_out,
                                        S32* rent_out,
-                                       BOOL* for_sale_out,
+                                       bool* for_sale_out,
                                        F32* dwell_out)
 {
     S32 area = 0;
     S32 price = 0;
     S32 rent = 0;
-    BOOL for_sale = FALSE;
+    bool for_sale = false;
     F32 dwell = DWELL_NAN;
 
     if (mSelected)
@@ -257,12 +257,12 @@ void LLViewerParcelMgr::getDisplayInfo(S32* area_out, S32* claim_out,
         if (mCurrentParcel->getForSale())
         {
             price = mCurrentParcel->getSalePrice();
-            for_sale = TRUE;
+            for_sale = true;
         }
         else
         {
             price = area * mCurrentParcel->getClaimPricePerMeter();
-            for_sale = FALSE;
+            for_sale = false;
         }
 
         rent = mCurrentParcel->getTotalRent();
@@ -432,14 +432,14 @@ LLParcelSelectionHandle LLViewerParcelMgr::selectParcelAt(const LLVector3d& pos_
     northeast.mdV[VY] = ll_round( northeast.mdV[VY], (F64)PARCEL_GRID_STEP_METERS );
 
     // Snap to parcel
-    return selectLand( southwest, northeast, TRUE );
+    return selectLand( southwest, northeast, true );
 }
 
 
 // Tries to select the parcel inside the rectangle
 LLParcelSelectionHandle LLViewerParcelMgr::selectParcelInRectangle()
 {
-    return selectLand(mWestSouth, mEastNorth, TRUE);
+    return selectLand(mWestSouth, mEastNorth, true);
 }
 
 
@@ -476,8 +476,8 @@ void LLViewerParcelMgr::selectCollisionParcel()
     mCurrentParcelSelection->setParcel(NULL);
     mCurrentParcelSelection = new LLParcelSelection(mCurrentParcel);
 
-    mSelected = TRUE;
-    mCurrentParcelSelection->mWholeParcelSelected = TRUE;
+    mSelected = true;
+    mCurrentParcelSelection->mWholeParcelSelected = true;
     notifyObservers();
     return;
 }
@@ -485,7 +485,7 @@ void LLViewerParcelMgr::selectCollisionParcel()
 
 // snap_selection = auto-select the hit parcel, if there is exactly one
 LLParcelSelectionHandle LLViewerParcelMgr::selectLand(const LLVector3d &corner1, const LLVector3d &corner2,
-                                   BOOL snap_selection)
+                                   bool snap_selection)
 {
     sanitize_corners( corner1, corner2, mWestSouth, mEastNorth );
 
@@ -493,7 +493,7 @@ LLParcelSelectionHandle LLViewerParcelMgr::selectLand(const LLVector3d &corner1,
     F32 delta_x = getSelectionWidth();
     if (delta_x * delta_x <= 1.f * 1.f)
     {
-        mSelected = FALSE;
+        mSelected = false;
         notifyObservers();
         return NULL;
     }
@@ -502,7 +502,7 @@ LLParcelSelectionHandle LLViewerParcelMgr::selectLand(const LLVector3d &corner1,
     F32 delta_y = getSelectionHeight();
     if (delta_y * delta_y <= 1.f * 1.f)
     {
-        mSelected = FALSE;
+        mSelected = false;
         notifyObservers();
         return NULL;
     }
@@ -520,14 +520,14 @@ LLParcelSelectionHandle LLViewerParcelMgr::selectLand(const LLVector3d &corner1,
     if(!region)
     {
         // just in case they somehow selected no land.
-        mSelected = FALSE;
+        mSelected = false;
         return NULL;
     }
 
     if (region != region_other)
     {
         LLNotificationsUtil::add("CantSelectLandFromMultipleRegions");
-        mSelected = FALSE;
+        mSelected = false;
         notifyObservers();
         return NULL;
     }
@@ -557,7 +557,7 @@ LLParcelSelectionHandle LLViewerParcelMgr::selectLand(const LLVector3d &corner1,
     mCurrentParcelSelection->setParcel(NULL);
     mCurrentParcelSelection = new LLParcelSelection(mCurrentParcel);
 
-    mSelected = TRUE;
+    mSelected = true;
     mCurrentParcelSelection->mWholeParcelSelected = snap_selection;
     notifyObservers();
     return mCurrentParcelSelection;
@@ -576,7 +576,7 @@ void LLViewerParcelMgr::deselectLand()
 {
     if (mSelected)
     {
-        mSelected = FALSE;
+        mSelected = false;
 
         // Invalidate the selected parcel
         mCurrentParcel->setLocalID(-1);
@@ -615,15 +615,13 @@ void LLViewerParcelMgr::removeObserver(LLParcelObserver* observer)
 void LLViewerParcelMgr::notifyObservers()
 {
     std::vector<LLParcelObserver*> observers;
-    S32 count = mObservers.size();
-    S32 i;
-    for(i = 0; i < count; ++i)
+    for (auto observer : mObservers)
     {
-        observers.push_back(mObservers.at(i));
+        observers.emplace_back(observer);
     }
-    for(i = 0; i < count; ++i)
+    for (auto observer : observers)
     {
-        observers.at(i)->changed();
+        observer->changed();
     }
 }
 
@@ -631,7 +629,7 @@ void LLViewerParcelMgr::notifyObservers()
 //
 // ACCESSORS
 //
-BOOL LLViewerParcelMgr::selectionEmpty() const
+bool LLViewerParcelMgr::selectionEmpty() const
 {
     return !mSelected;
 }
@@ -741,99 +739,99 @@ bool LLViewerParcelMgr::allowAgentDamage(const LLViewerRegion* region, const LLP
         || (parcel && parcel->getAllowDamage());
 }
 
-BOOL LLViewerParcelMgr::isOwnedAt(const LLVector3d& pos_global) const
+bool LLViewerParcelMgr::isOwnedAt(const LLVector3d& pos_global) const
 {
     LLViewerRegion* region = LLWorld::getInstance()->getRegionFromPosGlobal( pos_global );
-    if (!region) return FALSE;
+    if (!region) return false;
 
     LLViewerParcelOverlay* overlay = region->getParcelOverlay();
-    if (!overlay) return FALSE;
+    if (!overlay) return false;
 
     LLVector3 pos_region = region->getPosRegionFromGlobal( pos_global );
 
     return overlay->isOwned( pos_region );
 }
 
-BOOL LLViewerParcelMgr::isOwnedSelfAt(const LLVector3d& pos_global) const
+bool LLViewerParcelMgr::isOwnedSelfAt(const LLVector3d& pos_global) const
 {
     LLViewerRegion* region = LLWorld::getInstance()->getRegionFromPosGlobal( pos_global );
-    if (!region) return FALSE;
+    if (!region) return false;
 
     LLViewerParcelOverlay* overlay = region->getParcelOverlay();
-    if (!overlay) return FALSE;
+    if (!overlay) return false;
 
     LLVector3 pos_region = region->getPosRegionFromGlobal( pos_global );
 
     return overlay->isOwnedSelf( pos_region );
 }
 
-BOOL LLViewerParcelMgr::isOwnedOtherAt(const LLVector3d& pos_global) const
+bool LLViewerParcelMgr::isOwnedOtherAt(const LLVector3d& pos_global) const
 {
     LLViewerRegion* region = LLWorld::getInstance()->getRegionFromPosGlobal( pos_global );
-    if (!region) return FALSE;
+    if (!region) return false;
 
     LLViewerParcelOverlay* overlay = region->getParcelOverlay();
-    if (!overlay) return FALSE;
+    if (!overlay) return false;
 
     LLVector3 pos_region = region->getPosRegionFromGlobal( pos_global );
 
     return overlay->isOwnedOther( pos_region );
 }
 
-BOOL LLViewerParcelMgr::isSoundLocal(const LLVector3d& pos_global) const
+bool LLViewerParcelMgr::isSoundLocal(const LLVector3d& pos_global) const
 {
     LLViewerRegion* region = LLWorld::getInstance()->getRegionFromPosGlobal( pos_global );
-    if (!region) return FALSE;
+    if (!region) return false;
 
     LLViewerParcelOverlay* overlay = region->getParcelOverlay();
-    if (!overlay) return FALSE;
+    if (!overlay) return false;
 
     LLVector3 pos_region = region->getPosRegionFromGlobal( pos_global );
 
     return overlay->isSoundLocal( pos_region );
 }
 
-BOOL LLViewerParcelMgr::canHearSound(const LLVector3d &pos_global) const
+bool LLViewerParcelMgr::canHearSound(const LLVector3d &pos_global) const
 {
-    BOOL in_agent_parcel = inAgentParcel(pos_global);
+    bool in_agent_parcel = inAgentParcel(pos_global);
 
     if (in_agent_parcel)
     {
         // In same parcel as the agent
-        return TRUE;
+        return true;
     }
     else
     {
         if (LLViewerParcelMgr::getInstance()->getAgentParcel()->getSoundLocal())
         {
             // Not in same parcel, and agent parcel only has local sound
-            return FALSE;
+            return false;
         }
         else if (LLViewerParcelMgr::getInstance()->isSoundLocal(pos_global))
         {
             // Not in same parcel, and target parcel only has local sound
-            return FALSE;
+            return false;
         }
         else
         {
             // Not in same parcel, but neither are local sound
-            return TRUE;
+            return true;
         }
     }
 }
 
 
-BOOL LLViewerParcelMgr::inAgentParcel(const LLVector3d &pos_global) const
+bool LLViewerParcelMgr::inAgentParcel(const LLVector3d &pos_global) const
 {
     LLViewerRegion* region = LLWorld::getInstance()->getRegionFromPosGlobal(pos_global);
     LLViewerRegion* agent_region = gAgent.getRegion();
     if (!region || !agent_region)
-        return FALSE;
+        return false;
 
     if (region != agent_region)
     {
         // Can't be in the agent parcel if you're not in the same region.
-        return FALSE;
+        return false;
     }
 
     LLVector3 pos_region = agent_region->getPosRegionFromGlobal(pos_global);
@@ -842,11 +840,11 @@ BOOL LLViewerParcelMgr::inAgentParcel(const LLVector3d &pos_global) const
 
     if (mAgentParcelOverlay[row*mParcelsPerEdge + column])
     {
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
@@ -912,7 +910,7 @@ void LLViewerParcelMgr::renderParcelCollision()
         LLViewerRegion* regionp = gAgent.getRegion();
         if (regionp)
         {
-            BOOL use_pass = mCollisionParcel->getParcelFlag(PF_USE_PASS_LIST);
+            bool use_pass = mCollisionParcel->getParcelFlag(PF_USE_PASS_LIST);
             renderCollisionSegments(mCollisionSegments, use_pass, regionp);
         }
     }
@@ -1117,9 +1115,9 @@ public:
     LLUUID  mAgent;
     LLUUID  mSession;
     LLUUID  mGroup;
-    BOOL    mIsGroupOwned;
-    BOOL    mRemoveContribution;
-    BOOL    mIsClaim;
+    bool    mIsGroupOwned;
+    bool    mRemoveContribution;
+    bool    mIsClaim;
     LLHost  mHost;
 
     // for parcel buys
@@ -1138,9 +1136,9 @@ LLViewerParcelMgr::ParcelBuyInfo* LLViewerParcelMgr::setupParcelBuy(
     const LLUUID& agent_id,
     const LLUUID& session_id,
     const LLUUID& group_id,
-    BOOL is_group_owned,
-    BOOL is_claim,
-    BOOL remove_contribution)
+    bool is_group_owned,
+    bool is_claim,
+    bool remove_contribution)
 {
     if (!mSelected || !mCurrentParcel)
     {
@@ -1222,7 +1220,7 @@ void LLViewerParcelMgr::sendParcelBuy(ParcelBuyInfo* info)
         msg->addBOOL("RemoveContribution", info->mRemoveContribution);
         msg->addS32("LocalID", info->mParcelID);
     }
-    msg->addBOOL("Final", TRUE);    // don't allow escrow buys
+    msg->addBOOL("Final", true);    // don't allow escrow buys
     if (info->mIsClaim)
     {
         msg->nextBlock("ParcelData");
@@ -1478,7 +1476,7 @@ void LLViewerParcelMgr::setHoverParcel(const LLVector3d& pos)
         msg->addF32Fast(_PREHASH_South, south);
         msg->addF32Fast(_PREHASH_East, east);
         msg->addF32Fast(_PREHASH_North, north);
-        msg->addBOOL("SnapSelection", FALSE);
+        msg->addBOOL("SnapSelection", false);
         msg->sendReliable(region->getHost());
 
         mHoverRequestResult = PARCEL_RESULT_NO_DATA;
@@ -1534,13 +1532,13 @@ void LLViewerParcelMgr::processParcelProperties(LLMessageSystem *msg, void **use
 
     S32     request_result;
     S32     sequence_id;
-    BOOL    snap_selection = FALSE;
+    bool    snap_selection = false;
     S32     self_count = 0;
     S32     other_count = 0;
     S32     public_count = 0;
     S32     local_id;
     LLUUID  owner_id;
-    BOOL    is_group_owned;
+    bool    is_group_owned;
     U32 auction_id = 0;
     S32     claim_price_per_meter = 0;
     S32     rent_price_per_meter = 0;
@@ -1559,15 +1557,15 @@ void LLViewerParcelMgr::processParcelProperties(LLMessageSystem *msg, void **use
     S32     other_prims = 0;
     S32     selected_prims = 0;
     F32     parcel_prim_bonus = 1.f;
-    BOOL    region_push_override = false;
-    BOOL    region_deny_anonymous_override = false;
-    BOOL    region_deny_identified_override = false; // Deprecated
-    BOOL    region_deny_transacted_override = false; // Deprecated
-    BOOL    region_deny_age_unverified_override = false;
-    BOOL    region_allow_access_override = true;
-    BOOL    region_allow_environment_override = true;
+    bool    region_push_override = false;
+    bool    region_deny_anonymous_override = false;
+    bool    region_deny_identified_override = false; // Deprecated
+    bool    region_deny_transacted_override = false; // Deprecated
+    bool    region_deny_age_unverified_override = false;
+    bool    region_allow_access_override = true;
+    bool    region_allow_environment_override = true;
     S32     parcel_environment_version = 0;
-    BOOL    agent_parcel_update = false; // updating previous(existing) agent parcel
+    bool    agent_parcel_update = false; // updating previous(existing) agent parcel
     U32     extended_flags = 0; //obscure MOAP
 
     S32     other_clean_time = 0;
@@ -1694,7 +1692,7 @@ void LLViewerParcelMgr::processParcelProperties(LLMessageSystem *msg, void **use
         bool environment_changed = (cur_parcel_environment_version != parcel_environment_version);
 
         parcel->init(owner_id,
-            FALSE, FALSE, FALSE,
+            false, false, false,
             claim_date, claim_price_per_meter, rent_price_per_meter,
             area, other_prims, parcel_prim_bonus, is_group_owned);
         parcel->setLocalID(local_id);
@@ -1742,7 +1740,7 @@ void LLViewerParcelMgr::processParcelProperties(LLMessageSystem *msg, void **use
 
             if (instance->mTeleportInProgress)
             {
-                instance->mTeleportInProgress = FALSE;
+                instance->mTeleportInProgress = false;
                 if(instance->mTeleportInProgressPosition.isNull())
                 {
                     //initial update
@@ -1758,7 +1756,7 @@ void LLViewerParcelMgr::processParcelProperties(LLMessageSystem *msg, void **use
 
             // Notify anything that wants to know when the agent changes parcels
             gAgent.changeParcels();
-            instance->mTeleportInProgress = FALSE;
+            instance->mTeleportInProgress = false;
         }
         else if (agent_parcel_update)
         {
@@ -1801,7 +1799,7 @@ void LLViewerParcelMgr::processParcelProperties(LLMessageSystem *msg, void **use
                                 west_south.mV[VY],
                                 east_north.mV[VX],
                                 east_north.mV[VY] );
-                parcel_mgr.mCurrentParcelSelection->mWholeParcelSelected = FALSE;
+                parcel_mgr.mCurrentParcelSelection->mWholeParcelSelected = false;
             }
             else if (0 == local_id)
             {
@@ -1815,7 +1813,7 @@ void LLViewerParcelMgr::processParcelProperties(LLMessageSystem *msg, void **use
                                 aabb_min.mV[VY],
                                 aabb_max.mV[VX],
                                 aabb_max.mV[VY] );
-                parcel_mgr.mCurrentParcelSelection->mWholeParcelSelected = TRUE;
+                parcel_mgr.mCurrentParcelSelection->mWholeParcelSelected = true;
             }
             else
             {
@@ -1835,7 +1833,7 @@ void LLViewerParcelMgr::processParcelProperties(LLMessageSystem *msg, void **use
                 delete[] bitmap;
                 bitmap = NULL;
 
-                parcel_mgr.mCurrentParcelSelection->mWholeParcelSelected = TRUE;
+                parcel_mgr.mCurrentParcelSelection->mWholeParcelSelected = true;
             }
 
             // Request access list information for this land
@@ -1848,7 +1846,7 @@ void LLViewerParcelMgr::processParcelProperties(LLMessageSystem *msg, void **use
                 parcel_mgr.sendParcelDwellRequest();
             }
 
-            parcel_mgr.mSelected = TRUE;
+            parcel_mgr.mSelected = true;
             parcel_mgr.notifyObservers();
         }
     }
@@ -2149,11 +2147,11 @@ void LLViewerParcelMgr::sendParcelAccessListUpdate(U32 which)
 
 void LLViewerParcelMgr::sendParcelAccessListUpdate(U32 flags, const LLAccessEntry::map& entries, LLViewerRegion* region, S32 parcel_local_id)
 {
-    S32 count = entries.size();
+    S32 count = static_cast<S32>(entries.size());
     S32 num_sections = (S32) ceil(count/PARCEL_MAX_ENTRIES_PER_PACKET);
     S32 sequence_id = 1;
-    BOOL start_message = TRUE;
-    BOOL initial = TRUE;
+    bool start_message = true;
+    bool initial = true;
 
     LLUUID transactionUUID;
     transactionUUID.generate();
@@ -2177,7 +2175,7 @@ void LLViewerParcelMgr::sendParcelAccessListUpdate(U32 flags, const LLAccessEntr
             msg->addUUIDFast(_PREHASH_TransactionID, transactionUUID);
             msg->addS32Fast(_PREHASH_SequenceID, sequence_id);
             msg->addS32Fast(_PREHASH_Sections, num_sections);
-            start_message = FALSE;
+            start_message = false;
 
             if (initial && (cit == end))
             {
@@ -2188,7 +2186,7 @@ void LLViewerParcelMgr::sendParcelAccessListUpdate(U32 flags, const LLAccessEntr
                 msg->addU32Fast(_PREHASH_Flags, 0 );
             }
 
-            initial = FALSE;
+            initial = false;
             sequence_id++;
 
         }
@@ -2204,7 +2202,7 @@ void LLViewerParcelMgr::sendParcelAccessListUpdate(U32 flags, const LLAccessEntr
             ++cit;
         }
 
-        start_message = TRUE;
+        start_message = true;
         msg->sendReliable( region->getHost() );
     }
 }
@@ -2350,7 +2348,7 @@ bool LLViewerParcelMgr::canAgentBuyParcel(LLParcel* parcel, bool forGroup) const
             && ((parcel->getSalePrice() > 0) || (authorizeBuyer.notNull()));
 
     bool isEmpowered
-        = forGroup ? gAgent.hasPowerInActiveGroup(GP_LAND_DEED) == TRUE : true;
+        = forGroup ? gAgent.hasPowerInActiveGroup(GP_LAND_DEED) : true;
 
     bool isOwner
         = parcelOwner == (forGroup ? gAgent.getGroupID() : gAgent.getID());
@@ -2365,9 +2363,9 @@ bool LLViewerParcelMgr::canAgentBuyParcel(LLParcel* parcel, bool forGroup) const
 }
 
 
-void LLViewerParcelMgr::startBuyLand(BOOL is_for_group)
+void LLViewerParcelMgr::startBuyLand(bool is_for_group)
 {
-    LLFloaterBuyLand::buyLand(getSelectionRegion(), mCurrentParcelSelection, is_for_group == TRUE);
+    LLFloaterBuyLand::buyLand(getSelectionRegion(), mCurrentParcelSelection, is_for_group);
 }
 
 void LLViewerParcelMgr::startSellLand()
@@ -2589,39 +2587,39 @@ void LLViewerParcelMgr::buyPass()
 }
 
 //Tells whether we are allowed to buy a pass or not
-BOOL LLViewerParcelMgr::isCollisionBanned()
+bool LLViewerParcelMgr::isCollisionBanned()
 {
     if ((mCollisionBanned == BA_ALLOWED) || (mCollisionBanned == BA_NOT_ON_LIST) || (mCollisionBanned == BA_NOT_IN_GROUP))
-        return FALSE;
+        return false;
     else
-        return TRUE;
+        return true;
 }
 
 // This implementation should mirror LLSimParcelMgr::isParcelOwnedBy
 // static
-BOOL LLViewerParcelMgr::isParcelOwnedByAgent(const LLParcel* parcelp, U64 group_proxy_power)
+bool LLViewerParcelMgr::isParcelOwnedByAgent(const LLParcel* parcelp, U64 group_proxy_power)
 {
     if (!parcelp)
     {
-        return FALSE;
+        return false;
     }
 
     // Gods can always assume ownership.
     if (gAgent.isGodlike())
     {
-        return TRUE;
+        return true;
     }
 
     // The owner of a parcel automatically gets all powersr.
     if (parcelp->getOwnerID() == gAgent.getID())
     {
-        return TRUE;
+        return true;
     }
 
     // Only gods can assume 'ownership' of public land.
     if (parcelp->isPublic())
     {
-        return FALSE;
+        return false;
     }
 
     // Return whether or not the agent has group_proxy_power powers in the
@@ -2631,10 +2629,10 @@ BOOL LLViewerParcelMgr::isParcelOwnedByAgent(const LLParcel* parcelp, U64 group_
 
 // This implementation should mirror llSimParcelMgr::isParcelModifiableBy
 // static
-BOOL LLViewerParcelMgr::isParcelModifiableByAgent(const LLParcel* parcelp, U64 group_proxy_power)
+bool LLViewerParcelMgr::isParcelModifiableByAgent(const LLParcel* parcelp, U64 group_proxy_power)
 {
     // If the agent can assume ownership, it is probably modifiable.
-    BOOL rv = FALSE;
+    bool rv = false;
     if (parcelp)
     {
         // *NOTE: This should only work for leased parcels, but group owned
@@ -2646,7 +2644,7 @@ BOOL LLViewerParcelMgr::isParcelModifiableByAgent(const LLParcel* parcelp, U64 g
             && !gAgent.isGodlike()
             && (parcelp->getOwnershipStatus() != LLParcel::OS_LEASED) )
         {
-            rv = FALSE;
+            rv = false;
         }
     }
     return rv;
@@ -2718,7 +2716,7 @@ void LLViewerParcelMgr::onTeleportFinished(bool local, const LLVector3d& new_pos
         // The agent parcel data has not been updated yet.
         // Let's wait for the update and then emit the signal.
         mTeleportInProgressPosition = new_pos;
-        mTeleportInProgress = TRUE;
+        mTeleportInProgress = true;
     }
 }
 
diff --git a/indra/newview/llviewerparcelmgr.h b/indra/newview/llviewerparcelmgr.h
index 0394004b38..974ea39359 100644
--- a/indra/newview/llviewerparcelmgr.h
+++ b/indra/newview/llviewerparcelmgr.h
@@ -86,14 +86,14 @@ public:
 
     static void cleanupGlobals();
 
-    BOOL    selectionEmpty() const;
+    bool    selectionEmpty() const;
     F32     getSelectionWidth() const   { return F32(mEastNorth.mdV[VX] - mWestSouth.mdV[VX]); }
     F32     getSelectionHeight() const  { return F32(mEastNorth.mdV[VY] - mWestSouth.mdV[VY]); }
-    BOOL    getSelection(LLVector3d &min, LLVector3d &max) { min = mWestSouth; max = mEastNorth; return !selectionEmpty();}
+    bool    getSelection(LLVector3d &min, LLVector3d &max) { min = mWestSouth; max = mEastNorth; return !selectionEmpty();}
     LLViewerRegion* getSelectionRegion();
     F32     getDwelling() const { return mSelectedDwell;}
 
-    void    getDisplayInfo(S32* area, S32* claim, S32* rent, BOOL* for_sale, F32* dwell);
+    void    getDisplayInfo(S32* area, S32* claim, S32* rent, bool* for_sale, F32* dwell);
 
     // Returns selected area
     S32 getSelectedArea() const;
@@ -121,7 +121,7 @@ public:
 
     // Select a piece of land
     LLParcelSelectionHandle selectLand(const LLVector3d &corner1, const LLVector3d &corner2,
-                       BOOL snap_to_parcel);
+                       bool snap_to_parcel);
 
     // Clear the selection, and stop drawing the highlight.
     void    deselectLand();
@@ -131,14 +131,14 @@ public:
     void removeObserver(LLParcelObserver* observer);
     void notifyObservers();
 
-    void setSelectionVisible(BOOL visible) { mRenderSelection = visible; }
+    void setSelectionVisible(bool visible) { mRenderSelection = visible; }
 
-    BOOL    isOwnedAt(const LLVector3d& pos_global) const;
-    BOOL    isOwnedSelfAt(const LLVector3d& pos_global) const;
-    BOOL    isOwnedOtherAt(const LLVector3d& pos_global) const;
-    BOOL    isSoundLocal(const LLVector3d &pos_global) const;
+    bool    isOwnedAt(const LLVector3d& pos_global) const;
+    bool    isOwnedSelfAt(const LLVector3d& pos_global) const;
+    bool    isOwnedOtherAt(const LLVector3d& pos_global) const;
+    bool    isSoundLocal(const LLVector3d &pos_global) const;
 
-    BOOL    canHearSound(const LLVector3d &pos_global) const;
+    bool    canHearSound(const LLVector3d &pos_global) const;
 
     // Returns a reference counted pointer to current parcel selection.
     // Selection does not change to reflect new selections made by user
@@ -156,7 +156,7 @@ public:
     LLParcel *getAgentParcel() const;
     LLParcel *getAgentOrSelectedParcel() const;
 
-    BOOL    inAgentParcel(const LLVector3d &pos_global) const;
+    bool    inAgentParcel(const LLVector3d &pos_global) const;
 
     // Returns a pointer only when it has valid data.
     LLParcel*   getHoverParcel() const;
@@ -203,7 +203,7 @@ public:
                         const LLVector3d &east_north_top );
     void    renderOneSegment(F32 x1, F32 y1, F32 x2, F32 y2, F32 height, U8 direction, LLViewerRegion* regionp);
     void    renderHighlightSegments(const U8* segments, LLViewerRegion* regionp);
-    void    renderCollisionSegments(U8* segments, BOOL use_pass, LLViewerRegion* regionp);
+    void    renderCollisionSegments(U8* segments, bool use_pass, LLViewerRegion* regionp);
 
     static S32 PARCEL_BAN_LINES_HIDE;
     static S32 PARCEL_BAN_LINES_ON_COLLISION;
@@ -237,8 +237,8 @@ public:
 
     bool    canAgentBuyParcel(LLParcel*, bool forGroup) const;
 
-//  void    startClaimLand(BOOL is_for_group = FALSE);
-    void    startBuyLand(BOOL is_for_group = FALSE);
+//  void    startClaimLand(bool is_for_group = false);
+    void    startBuyLand(bool is_for_group = false);
     void    startSellLand();
     void    startReleaseLand();
     void    startDivideLand();
@@ -254,9 +254,9 @@ public:
     ParcelBuyInfo* setupParcelBuy(const LLUUID& agent_id,
                                   const LLUUID& session_id,
                                   const LLUUID& group_id,
-                                  BOOL is_group_owned,
-                                  BOOL is_claim,
-                                  BOOL remove_contribution);
+                                  bool is_group_owned,
+                                  bool is_claim,
+                                  bool remove_contribution);
         // callers responsibility to call deleteParcelBuy() on return value
     void sendParcelBuy(ParcelBuyInfo*);
     void deleteParcelBuy(ParcelBuyInfo* *info);
@@ -287,7 +287,7 @@ public:
 
     // Whether or not the collision border around the parcel is there because
     // the agent is banned or not in the allowed group
-    BOOL isCollisionBanned();
+    bool isCollisionBanned();
 
     boost::signals2::connection setTeleportFinishedCallback(teleport_finished_callback_t cb);
     boost::signals2::connection setTeleportFailedCallback(teleport_failed_callback_t cb);
@@ -295,8 +295,8 @@ public:
     void onTeleportFailed();
     bool getTeleportInProgress();
 
-    static BOOL isParcelOwnedByAgent(const LLParcel* parcelp, U64 group_proxy_power);
-    static BOOL isParcelModifiableByAgent(const LLParcel* parcelp, U64 group_proxy_power);
+    static bool isParcelOwnedByAgent(const LLParcel* parcelp, U64 group_proxy_power);
+    static bool isParcelModifiableByAgent(const LLParcel* parcelp, U64 group_proxy_power);
 
 private:
     static void sendParcelAccessListUpdate(U32 flags, const std::map<LLUUID, class LLAccessEntry>& entries, LLViewerRegion* region, S32 parcel_local_id);
@@ -319,12 +319,12 @@ private:
     static bool callbackDivideLand(const LLSD& notification, const LLSD& response);
     static bool callbackJoinLand(const LLSD& notification, const LLSD& response);
 
-    //void  finishClaim(BOOL user_to_user_sale, U32 join);
+    //void  finishClaim(bool user_to_user_sale, U32 join);
     LLViewerTexture* getBlockedImage() const;
     LLViewerTexture* getPassImage() const;
 
 private:
-    BOOL                        mSelected;
+    bool                        mSelected;
 
     LLParcel*                   mCurrentParcel;         // selected parcel info
     LLParcelSelectionHandle     mCurrentParcelSelection;
@@ -344,7 +344,7 @@ private:
 
     std::vector<LLParcelObserver*> mObservers;
 
-    BOOL                        mTeleportInProgress;
+    bool                        mTeleportInProgress;
     LLVector3d                  mTeleportInProgressPosition;
     teleport_finished_signal_t  mTeleportFinishedSignal;
     teleport_failed_signal_t    mTeleportFailedSignal;
@@ -367,7 +367,7 @@ private:
     LLParcel*                   mCollisionParcel;
     U8*                         mCollisionSegments;
     bool                        mRenderCollision;
-    BOOL                        mRenderSelection;
+    bool                        mRenderSelection;
     S32                         mCollisionBanned;
     LLFrameTimer                mCollisionTimer;
     LLViewerTexture*            mBlockedImage;
diff --git a/indra/newview/llviewerparceloverlay.cpp b/indra/newview/llviewerparceloverlay.cpp
index 5c9dbcea76..1f14aa4afc 100755
--- a/indra/newview/llviewerparceloverlay.cpp
+++ b/indra/newview/llviewerparceloverlay.cpp
@@ -56,15 +56,15 @@ static const F32 LINE_WIDTH = 0.0625f;
 LLViewerParcelOverlay::LLViewerParcelOverlay(LLViewerRegion* region, F32 region_width_meters)
 :   mRegion( region ),
     mParcelGridsPerEdge( S32( region_width_meters / PARCEL_GRID_STEP_METERS ) ),
-    mDirty( FALSE ),
+    mDirty( false ),
     mTimeSinceLastUpdate(),
     mOverlayTextureIdx(-1)
 {
     // Create a texture to hold color information.
     // 4 components
-    // Use mipmaps = FALSE, clamped, NEAREST filter, for sharp edges
+    // Use mipmaps = false, clamped, NEAREST filter, for sharp edges
     mImageRaw = new LLImageRaw(mParcelGridsPerEdge, mParcelGridsPerEdge, OVERLAY_IMG_COMPONENTS);
-    mTexture = LLViewerTextureManager::getLocalTexture(mImageRaw.get(), FALSE);
+    mTexture = LLViewerTextureManager::getLocalTexture(mImageRaw.get(), false);
     mTexture->setAddressMode(LLTexUnit::TAM_CLAMP);
     mTexture->setFilteringOption(LLTexUnit::TFO_POINT);
 
@@ -102,28 +102,28 @@ LLViewerParcelOverlay::~LLViewerParcelOverlay()
 //---------------------------------------------------------------------------
 // ACCESSORS
 //---------------------------------------------------------------------------
-BOOL LLViewerParcelOverlay::isOwned(const LLVector3& pos) const
+bool LLViewerParcelOverlay::isOwned(const LLVector3& pos) const
 {
     S32 row =    S32(pos.mV[VY] / PARCEL_GRID_STEP_METERS);
     S32 column = S32(pos.mV[VX] / PARCEL_GRID_STEP_METERS);
     return (PARCEL_PUBLIC != ownership(row, column));
 }
 
-BOOL LLViewerParcelOverlay::isOwnedSelf(const LLVector3& pos) const
+bool LLViewerParcelOverlay::isOwnedSelf(const LLVector3& pos) const
 {
     S32 row =    S32(pos.mV[VY] / PARCEL_GRID_STEP_METERS);
     S32 column = S32(pos.mV[VX] / PARCEL_GRID_STEP_METERS);
     return (PARCEL_SELF == ownership(row, column));
 }
 
-BOOL LLViewerParcelOverlay::isOwnedGroup(const LLVector3& pos) const
+bool LLViewerParcelOverlay::isOwnedGroup(const LLVector3& pos) const
 {
     S32 row =    S32(pos.mV[VY] / PARCEL_GRID_STEP_METERS);
     S32 column = S32(pos.mV[VX] / PARCEL_GRID_STEP_METERS);
     return (PARCEL_GROUP == ownership(row, column));
 }
 
-BOOL LLViewerParcelOverlay::isOwnedOther(const LLVector3& pos) const
+bool LLViewerParcelOverlay::isOwnedOther(const LLVector3& pos) const
 {
     S32 row =    S32(pos.mV[VY] / PARCEL_GRID_STEP_METERS);
     S32 column = S32(pos.mV[VX] / PARCEL_GRID_STEP_METERS);
@@ -246,7 +246,7 @@ bool LLViewerParcelOverlay::encroachesOnNearbyParcel(const std::vector<LLBBox>&
     return false;
 }
 
-BOOL LLViewerParcelOverlay::isSoundLocal(const LLVector3& pos) const
+bool LLViewerParcelOverlay::isSoundLocal(const LLVector3& pos) const
 {
     S32 row =    S32(pos.mV[VY] / PARCEL_GRID_STEP_METERS);
     S32 column = S32(pos.mV[VX] / PARCEL_GRID_STEP_METERS);
@@ -497,7 +497,7 @@ void LLViewerParcelOverlay::updatePropertyLines()
     }
 
     // Everything's clean now
-    mDirty = FALSE;
+    mDirty = false;
 }
 
 void LLViewerParcelOverlay::addPropertyLine(F32 start_x, F32 start_y, F32 dx, F32 dy, F32 tick_dx, F32 tick_dy, const LLColor4U& color)
@@ -606,7 +606,7 @@ void LLViewerParcelOverlay::addPropertyLine(F32 start_x, F32 start_y, F32 dx, F3
 
 void LLViewerParcelOverlay::setDirty()
 {
-    mDirty = TRUE;
+    mDirty = true;
 }
 
 void LLViewerParcelOverlay::updateGL()
diff --git a/indra/newview/llviewerparceloverlay.h b/indra/newview/llviewerparceloverlay.h
index 7587dbb826..d78005e376 100644
--- a/indra/newview/llviewerparceloverlay.h
+++ b/indra/newview/llviewerparceloverlay.h
@@ -50,10 +50,10 @@ public:
     // ACCESS
     LLViewerTexture*        getTexture() const      { return mTexture; }
 
-    BOOL            isOwned(const LLVector3& pos) const;
-    BOOL            isOwnedSelf(const LLVector3& pos) const;
-    BOOL            isOwnedGroup(const LLVector3& pos) const;
-    BOOL            isOwnedOther(const LLVector3& pos) const;
+    bool            isOwned(const LLVector3& pos) const;
+    bool            isOwnedSelf(const LLVector3& pos) const;
+    bool            isOwnedGroup(const LLVector3& pos) const;
+    bool            isOwnedOther(const LLVector3& pos) const;
 
     // "encroaches" means the prim hangs over the parcel, but its center
     // might be in another parcel. for now, we simply test axis aligned
@@ -62,9 +62,9 @@ public:
     bool encroachesOnUnowned(const std::vector<LLBBox>& boxes) const;
     bool encroachesOnNearbyParcel(const std::vector<LLBBox>& boxes) const;
 
-    BOOL            isSoundLocal(const LLVector3& pos) const;
+    bool            isSoundLocal(const LLVector3& pos) const;
 
-    BOOL            isBuildCameraAllowed(const LLVector3& pos) const;
+    bool            isBuildCameraAllowed(const LLVector3& pos) const;
     F32             getOwnedRatio() const;
 
     // Returns the number of vertices drawn
@@ -112,7 +112,7 @@ private:
     U8              *mOwnership;
 
     // Update propery lines and overlay texture
-    BOOL            mDirty;
+    bool            mDirty;
     LLFrameTimer    mTimeSinceLastUpdate;
     S32             mOverlayTextureIdx;
 
diff --git a/indra/newview/llviewerpartsim.cpp b/indra/newview/llviewerpartsim.cpp
index b5505a42c4..b556aef768 100644
--- a/indra/newview/llviewerpartsim.cpp
+++ b/indra/newview/llviewerpartsim.cpp
@@ -137,7 +137,7 @@ LLViewerPartGroup::LLViewerPartGroup(const LLVector3 &center_agent, const F32 bo
  : mHud(hud)
 {
     mVOPartGroupp = NULL;
-    mUniformParticles = TRUE;
+    mUniformParticles = true;
 
     mRegionp = LLWorld::getInstance()->getRegionFromPosAgent(center_agent);
     llassert_always(center_agent.isFinite());
@@ -220,48 +220,48 @@ void LLViewerPartGroup::cleanup()
     }
 }
 
-BOOL LLViewerPartGroup::posInGroup(const LLVector3 &pos, const F32 desired_size)
+bool LLViewerPartGroup::posInGroup(const LLVector3 &pos, const F32 desired_size)
 {
     if ((pos.mV[VX] < mMinObjPos.mV[VX])
         || (pos.mV[VY] < mMinObjPos.mV[VY])
         || (pos.mV[VZ] < mMinObjPos.mV[VZ]))
     {
-        return FALSE;
+        return false;
     }
 
     if ((pos.mV[VX] > mMaxObjPos.mV[VX])
         || (pos.mV[VY] > mMaxObjPos.mV[VY])
         || (pos.mV[VZ] > mMaxObjPos.mV[VZ]))
     {
-        return FALSE;
+        return false;
     }
 
     if (desired_size > 0 &&
         (desired_size < mBoxRadius*0.5f ||
         desired_size > mBoxRadius*2.f))
     {
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLViewerPartGroup::addPart(LLViewerPart* part, F32 desired_size)
+bool LLViewerPartGroup::addPart(LLViewerPart* part, F32 desired_size)
 {
     if (part->mFlags & LLPartData::LL_PART_HUD && !mHud)
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL uniform_part = part->mScale.mV[0] == part->mScale.mV[1] &&
+    bool uniform_part = part->mScale.mV[0] == part->mScale.mV[1] &&
                     !(part->mFlags & LLPartData::LL_PART_FOLLOW_VELOCITY_MASK);
 
     if (!posInGroup(part->mPosAgent, desired_size) ||
         (mUniformParticles && !uniform_part) ||
         (!mUniformParticles && uniform_part))
     {
-        return FALSE;
+        return false;
     }
 
     gPipeline.markRebuild(mVOPartGroupp->mDrawable, LLDrawable::REBUILD_ALL);
@@ -269,7 +269,7 @@ BOOL LLViewerPartGroup::addPart(LLViewerPart* part, F32 desired_size)
     mParticles.push_back(part);
     part->mSkipOffset=mSkippedTime;
     LLViewerPartSim::incPartCount(1);
-    return TRUE;
+    return true;
 }
 
 
@@ -279,7 +279,7 @@ void LLViewerPartGroup::updateParticles(const F32 lastdt)
 
     LLVector3 gravity(0.f, 0.f, GRAVITY);
 
-    LLViewerPartSim::checkParticleCount(mParticles.size());
+    LLViewerPartSim::checkParticleCount(static_cast<U32>(mParticles.size()));
 
     LLViewerCamera* camera = LLViewerCamera::getInstance();
     LLViewerRegion *regionp = getRegion();
@@ -525,11 +525,11 @@ void LLViewerPartSim::destroyClass()
 }
 
 //static
-BOOL LLViewerPartSim::shouldAddPart()
+bool LLViewerPartSim::shouldAddPart()
 {
     if (sParticleCount >= MAX_PART_COUNT)
     {
-        return FALSE;
+        return false;
     }
 
     if (sParticleCount > PART_THROTTLE_THRESHOLD*sMaxParticleCount)
@@ -540,7 +540,7 @@ BOOL LLViewerPartSim::shouldAddPart()
         if (ll_frand() < frac)
         {
             // Skip...
-            return FALSE;
+            return false;
         }
     }
 
@@ -548,10 +548,10 @@ BOOL LLViewerPartSim::shouldAddPart()
     const F32 MIN_FRAME_RATE_FOR_NEW_PARTICLES = 4.f;
     if (gFPSClamped < MIN_FRAME_RATE_FOR_NEW_PARTICLES)
     {
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLViewerPartSim::addPart(LLViewerPart* part)
@@ -701,30 +701,30 @@ void LLViewerPartSim::updateSimulation()
 
         if (!mViewerPartSources[i]->isDead())
         {
-            BOOL upd = TRUE;
+            bool upd = true;
             LLViewerObject* vobj = mViewerPartSources[i]->mSourceObjectp;
 
             if (vobj && vobj->isAvatar() && ((LLVOAvatar*)vobj)->isInMuteList())
             {
-                upd = FALSE;
+                upd = false;
             }
 
             if(vobj && vobj->isOwnerInMuteList(mViewerPartSources[i]->getOwnerUUID()))
             {
-                upd = FALSE;
+                upd = false;
             }
 
             if (upd && vobj && (vobj->getPCode() == LL_PCODE_VOLUME))
             {
                 if(vobj->getAvatar() && vobj->getAvatar()->isTooComplex() && vobj->getAvatar()->isTooSlow())
                 {
-                    upd = FALSE;
+                    upd = false;
                 }
 
                 LLVOVolume* vvo = (LLVOVolume *)vobj;
                 if (!LLPipeline::sRenderAttachedParticles && vvo && vvo->isAttachment())
                 {
-                    upd = FALSE;
+                    upd = false;
                 }
             }
 
diff --git a/indra/newview/llviewerpartsim.h b/indra/newview/llviewerpartsim.h
index 4de962ac4f..cf3843bd66 100644
--- a/indra/newview/llviewerpartsim.h
+++ b/indra/newview/llviewerpartsim.h
@@ -95,11 +95,11 @@ public:
 
     void cleanup();
 
-    BOOL addPart(LLViewerPart* part, const F32 desired_size = -1.f);
+    bool addPart(LLViewerPart* part, const F32 desired_size = -1.f);
 
     void updateParticles(const F32 lastdt);
 
-    BOOL posInGroup(const LLVector3 &pos, const F32 desired_size = -1.f);
+    bool posInGroup(const LLVector3 &pos, const F32 desired_size = -1.f);
 
     void shift(const LLVector3 &offset);
 
@@ -117,7 +117,7 @@ public:
 
     LLPointer<LLVOPartGroup> mVOPartGroupp;
 
-    BOOL mUniformParticles;
+    bool mUniformParticles;
     U32 mID;
 
     F32 mSkippedTime;
@@ -152,7 +152,7 @@ public:
 
     void cleanupRegion(LLViewerRegion *regionp);
 
-    static BOOL shouldAddPart(); // Just decides whether this particle should be added or not (for particle count capping)
+    static bool shouldAddPart(); // Just decides whether this particle should be added or not (for particle count capping)
     F32 maxRate() // Return maximum particle generation rate
     {
         if (sParticleCount >= MAX_PART_COUNT)
@@ -177,7 +177,7 @@ public:
 
     friend class LLViewerPartGroup;
 
-    BOOL aboveParticleLimit() const { return sParticleCount > sMaxParticleCount; }
+    bool aboveParticleLimit() const { return sParticleCount > sMaxParticleCount; }
 
     static void setMaxPartCount(const S32 max_parts)    { sMaxParticleCount = max_parts; }
     static S32  getMaxPartCount()                       { return sMaxParticleCount; }
diff --git a/indra/newview/llviewerpartsource.cpp b/indra/newview/llviewerpartsource.cpp
index f803b000db..dd6a404836 100644
--- a/indra/newview/llviewerpartsource.cpp
+++ b/indra/newview/llviewerpartsource.cpp
@@ -66,8 +66,8 @@ LLViewerPartSource::LLViewerPartSource(const U32 type) :
 {
     mLastUpdateTime = 0.f;
     mLastPartTime = 0.f;
-    mIsDead = FALSE;
-    mIsSuspended = FALSE;
+    mIsDead = false;
+    mIsSuspended = false;
     static U32 id_seed = 0;
     mID = ++id_seed;
 
@@ -78,7 +78,7 @@ LLViewerPartSource::LLViewerPartSource(const U32 type) :
 
 void LLViewerPartSource::setDead()
 {
-    mIsDead = TRUE;
+    mIsDead = true;
 }
 
 
@@ -122,7 +122,7 @@ LLViewerPartSourceScript::LLViewerPartSourceScript(LLViewerObject *source_objp)
 
 void LLViewerPartSourceScript::setDead()
 {
-    mIsDead = TRUE;
+    mIsDead = true;
     mSourceObjectp = NULL;
     mTargetObjectp = NULL;
 }
@@ -207,17 +207,17 @@ void LLViewerPartSourceScript::update(const F32 dt)
         }
     }
 
-    BOOL first_run = FALSE;
+    bool first_run = false;
     if (old_update_time <= 0.f)
     {
-        first_run = TRUE;
+        first_run = true;
     }
 
     F32 max_time = llmax(1.f, 10.f*mPartSysData.mBurstRate);
     dt_update = llmin(max_time, dt_update);
     while ((dt_update > mPartSysData.mBurstRate) || first_run)
     {
-        first_run = FALSE;
+        first_run = false;
 
         // Update the rotation of the particle source by the angular velocity
         // First check to see if there is still an angular velocity.
@@ -586,7 +586,7 @@ LLViewerPartSourceSpiral::LLViewerPartSourceSpiral(const LLVector3 &pos) :
 
 void LLViewerPartSourceSpiral::setDead()
 {
-    mIsDead = TRUE;
+    mIsDead = true;
     mSourceObjectp = NULL;
 }
 
@@ -690,7 +690,7 @@ LLViewerPartSourceBeam::~LLViewerPartSourceBeam()
 
 void LLViewerPartSourceBeam::setDead()
 {
-    mIsDead = TRUE;
+    mIsDead = true;
     mSourceObjectp = NULL;
     mTargetObjectp = NULL;
 }
@@ -843,7 +843,7 @@ LLViewerPartSourceChat::LLViewerPartSourceChat(const LLVector3 &pos) :
 
 void LLViewerPartSourceChat::setDead()
 {
-    mIsDead = TRUE;
+    mIsDead = true;
     mSourceObjectp = NULL;
 }
 
diff --git a/indra/newview/llviewerpartsource.h b/indra/newview/llviewerpartsource.h
index 1f4304d421..dcf945dd43 100644
--- a/indra/newview/llviewerpartsource.h
+++ b/indra/newview/llviewerpartsource.h
@@ -58,12 +58,12 @@ public:
 
     LLViewerPartSource(const U32 type);
 
-    virtual void update(const F32 dt); // Return FALSE if this source is dead...
+    virtual void update(const F32 dt); // Return false if this source is dead...
 
     virtual void setDead();
-    BOOL isDead() const             { return mIsDead; }
-    void setSuspended( BOOL state ) { mIsSuspended = state; }
-    BOOL isSuspended() const        { return mIsSuspended; }
+    bool isDead() const             { return mIsDead; }
+    void setSuspended( bool state ) { mIsSuspended = state; }
+    bool isSuspended() const        { return mIsSuspended; }
     U32 getType() const             { return mType; }
     static void updatePart(LLViewerPart &part, const F32 dt);
     void setOwnerUUID(const LLUUID& owner_id) { mOwnerUUID = owner_id; }
@@ -81,8 +81,8 @@ public:
 
 protected:
     U32         mType;
-    BOOL        mIsDead;
-    BOOL        mIsSuspended;
+    bool        mIsDead;
+    bool        mIsSuspended;
     F32         mLastUpdateTime;
     F32         mLastPartTime;
     LLUUID      mOwnerUUID;
@@ -112,7 +112,7 @@ public:
 
     /*virtual*/ void setDead();
 
-    BOOL updateFromMesg();
+    bool updateFromMesg();
 
     // Returns a new particle source to attach to an object...
     static LLPointer<LLViewerPartSourceScript> unpackPSS(LLViewerObject *source_objp, LLPointer<LLViewerPartSourceScript> pssp, const S32 block_num);
diff --git a/indra/newview/llviewerregion.cpp b/indra/newview/llviewerregion.cpp
index 4c6c76bdd8..052c222d9a 100755
--- a/indra/newview/llviewerregion.cpp
+++ b/indra/newview/llviewerregion.cpp
@@ -55,6 +55,7 @@
 #include "llfloaterregioninfo.h"
 #include "llgltfmateriallist.h"
 #include "llhttpnode.h"
+#include "llpbrterrainfeatures.h"
 #include "llregioninfomodel.h"
 #include "llsdutil.h"
 #include "llstartup.h"
@@ -100,14 +101,11 @@
 const S32 MAX_CAP_REQUEST_ATTEMPTS = 30;
 const U32 DEFAULT_MAX_REGION_WIDE_PRIM_COUNT = 15000;
 
-BOOL LLViewerRegion::sVOCacheCullingEnabled = FALSE;
+bool LLViewerRegion::sVOCacheCullingEnabled = false;
 S32  LLViewerRegion::sLastCameraUpdated = 0;
 S32  LLViewerRegion::sNewObjectCreationThrottle = -1;
 LLViewerRegion::vocache_entry_map_t LLViewerRegion::sRegionCacheCleanup;
 
-const std::string LLViewerRegion::IL_MODE_DEFAULT = "default";
-const std::string LLViewerRegion::IL_MODE_360     = "360";
-
 typedef std::map<std::string, std::string> CapabilityMap;
 
 static void log_capabilities(const CapabilityMap &capmap);
@@ -139,7 +137,7 @@ public:
     bool handle(const LLSD& params, const LLSD& query_map, const std::string& grid, LLMediaCtrl* web)
     {
         // make sure that we at least have a region name
-        int num_params = params.size();
+        auto num_params = params.size();
         if (num_params < 1)
         {
             return false;
@@ -153,7 +151,7 @@ public:
         }
         boost::regex name_rx("[A-Za-z0-9()_%]+");
         boost::regex coord_rx("[0-9]+");
-        for (int i = 0; i < num_params; i++)
+        for (size_t i = 0; i < num_params; i++)
         {
             if (i > 0)
             {
@@ -626,7 +624,7 @@ LLViewerRegion::LLViewerRegion(const U64 &handle,
     mTimeDilation(1.0f),
     mName(""),
     mZoning(""),
-    mIsEstateManager(FALSE),
+    mIsEstateManager(false),
     mRegionFlags( REGION_FLAGS_DEFAULT ),
     mRegionProtocols( 0 ),
     mSimAccess( SIM_ACCESS_MIN ),
@@ -639,17 +637,17 @@ LLViewerRegion::LLViewerRegion(const U64 &handle,
     mProductSKU("unknown"),
     mProductName("unknown"),
     mViewerAssetUrl(""),
-    mCacheLoaded(FALSE),
-    mCacheDirty(FALSE),
-    mReleaseNotesRequested(FALSE),
+    mCacheLoaded(false),
+    mCacheDirty(false),
+    mReleaseNotesRequested(false),
     mCapabilitiesState(CAPABILITIES_STATE_INIT),
     mSimulatorFeaturesReceived(false),
     mBitsReceived(0.f),
     mPacketsReceived(0.f),
-    mDead(FALSE),
+    mDead(false),
     mLastVisitedEntry(NULL),
     mInvisibilityCheckHistory(-1),
-    mPaused(FALSE),
+    mPaused(false),
     mRegionCacheHitCount(0),
     mRegionCacheMissCount(0),
     mInterestListMode(IL_MODE_DEFAULT)
@@ -725,7 +723,7 @@ static LLTrace::BlockTimerStatHandle FTM_SAVE_REGION_CACHE("Save Region Cache");
 LLViewerRegion::~LLViewerRegion()
 {
     LL_PROFILE_ZONE_SCOPED;
-    mDead = TRUE;
+    mDead = true;
     mImpl->mActiveSet.clear();
     mImpl->mVisibleEntries.clear();
     mImpl->mVisibleGroups.clear();
@@ -789,7 +787,7 @@ void LLViewerRegion::loadObjectCache()
     }
 
     // Presume success.  If it fails, we don't want to try again.
-    mCacheLoaded = TRUE;
+    mCacheLoaded = true;
 
     if(LLVOCache::instanceExists())
     {
@@ -800,7 +798,7 @@ void LLViewerRegion::loadObjectCache()
 
         if (mImpl->mCacheMap.empty())
         {
-            mCacheDirty = TRUE;
+            mCacheDirty = true;
         }
     }
 }
@@ -827,7 +825,7 @@ void LLViewerRegion::saveObjectCache()
 
         instance.writeToCache(mHandle, mImpl->mCacheID, mImpl->mCacheMap, mCacheDirty, removal_enabled);
         instance.writeGenericExtrasToCache(mHandle, mImpl->mCacheID, mImpl->mGLTFOverridesLLSD, mCacheDirty, removal_enabled);
-        mCacheDirty = FALSE;
+        mCacheDirty = false;
     }
 
     if (LLAppViewer::instance()->isQuitting())
@@ -863,7 +861,7 @@ F32 LLViewerRegion::getWaterHeight() const
     return mImpl->mLandp->getWaterHeight();
 }
 
-BOOL LLViewerRegion::isVoiceEnabled() const
+bool LLViewerRegion::isVoiceEnabled() const
 {
     return getRegionFlag(REGION_FLAGS_ALLOW_VOICE);
 }
@@ -926,7 +924,7 @@ const LLUUID& LLViewerRegion::getOwner() const
 void LLViewerRegion::setRegionNameAndZone   (const std::string& name_zone)
 {
     std::string::size_type pipe_pos = name_zone.find('|');
-    S32 length   = name_zone.size();
+    auto length   = name_zone.size();
     if (pipe_pos != std::string::npos)
     {
         mName   = name_zone.substr(0, pipe_pos);
@@ -942,7 +940,7 @@ void LLViewerRegion::setRegionNameAndZone   (const std::string& name_zone)
     LLStringUtil::stripNonprintable(mZoning);
 }
 
-BOOL LLViewerRegion::canManageEstate() const
+bool LLViewerRegion::canManageEstate() const
 {
     return gAgent.isGodlike()
         || isEstateManager()
@@ -1169,7 +1167,7 @@ void LLViewerRegion::killCacheEntry(LLVOCacheEntry* entry, bool for_rendering)
     //will remove it from the object cache, real deletion
     entry->setState(LLVOCacheEntry::INACTIVE);
     entry->removeOctreeEntry();
-    entry->setValid(FALSE);
+    entry->setValid(false);
 
 }
 
@@ -1181,7 +1179,7 @@ void LLViewerRegion::killCacheEntry(U32 local_id)
 
 U32 LLViewerRegion::getNumOfActiveCachedObjects() const
 {
-    return  mImpl->mActiveSet.size();
+    return static_cast<U32>(mImpl->mActiveSet.size());
 }
 
 void LLViewerRegion::addActiveCacheEntry(LLVOCacheEntry* entry)
@@ -1268,7 +1266,7 @@ bool LLViewerRegion::addVisibleGroup(LLViewerOctreeGroup* group)
 
 U32 LLViewerRegion::getNumOfVisibleGroups() const
 {
-    return mImpl ? mImpl->mVisibleGroups.size() : 0;
+    return mImpl ? static_cast<U32>(mImpl->mVisibleGroups.size()) : 0;
 }
 
 void LLViewerRegion::updateReflectionProbes()
@@ -1497,12 +1495,12 @@ void LLViewerRegion::createVisibleObjects(F32 max_time)
     }
     if(mImpl->mWaitingList.empty())
     {
-        mImpl->mVOCachePartition->setCullHistory(FALSE);
+        mImpl->mVOCachePartition->setCullHistory(false);
         return;
     }
 
     S32 throttle = sNewObjectCreationThrottle;
-    BOOL has_new_obj = FALSE;
+    bool has_new_obj = false;
     LLTimer update_timer;
     for(LLVOCacheEntry::vocache_entry_priority_list_t::iterator iter = mImpl->mWaitingList.begin();
         iter != mImpl->mWaitingList.end(); ++iter)
@@ -1512,7 +1510,7 @@ void LLViewerRegion::createVisibleObjects(F32 max_time)
         if(vo_entry->getState() < LLVOCacheEntry::WAITING)
         {
             addNewObject(vo_entry);
-            has_new_obj = TRUE;
+            has_new_obj = true;
             if(throttle > 0 && !(--throttle) && update_timer.getElapsedTimeF32() > max_time)
             {
                 break;
@@ -1532,7 +1530,7 @@ void LLViewerRegion::clearCachedVisibleObjects()
 
     //reset all occluders
     mImpl->mVOCachePartition->resetOccluders();
-    mPaused = TRUE;
+    mPaused = true;
 
     //clean visible entries
     for(LLVOCacheEntry::vocache_entry_set_t::iterator iter = mImpl->mVisibleEntries.begin(); iter != mImpl->mVisibleEntries.end();)
@@ -1644,7 +1642,7 @@ void LLViewerRegion::idleUpdate(F32 max_update_time)
     }
     if(mPaused)
     {
-        mPaused = FALSE; //unpause.
+        mPaused = false; //unpause.
     }
 
     LLViewerCamera::eCameraID old_camera_id = LLViewerCamera::sCurCameraID;
@@ -1717,7 +1715,7 @@ void LLViewerRegion::calcNewObjectCreationThrottle()
     LLVOCacheEntry::updateDebugSettings();
 }
 
-BOOL LLViewerRegion::isViewerCameraStatic()
+bool LLViewerRegion::isViewerCameraStatic()
 {
     return sLastCameraUpdated < LLViewerOctreeEntryData::getCurrentFrame();
 }
@@ -1756,7 +1754,7 @@ void LLViewerRegion::killInvisibleObjects(F32 max_time)
     }
 
     std::vector<LLDrawable*> delete_list;
-    S32 update_counter = llmin(max_update, mImpl->mActiveSet.size());
+    auto update_counter = llmin(max_update, mImpl->mActiveSet.size());
     LLVOCacheEntry::vocache_entry_set_t::iterator iter = mImpl->mActiveSet.upper_bound(mLastVisitedEntry);
 
     for(; update_counter > 0; --update_counter, ++iter)
@@ -1795,10 +1793,9 @@ void LLViewerRegion::killInvisibleObjects(F32 max_time)
     if(!delete_list.empty())
     {
         mInvisibilityCheckHistory |= 1;
-        S32 count = delete_list.size();
-        for(S32 i = 0; i < count; i++)
+        for (auto drawable : delete_list)
         {
-            gObjectList.killObject(delete_list[i]->getVObj());
+            gObjectList.killObject(drawable->getVObj());
         }
         delete_list.clear();
     }
@@ -2138,27 +2135,27 @@ S32 LLViewerRegion::getHttpResponderID() const
     return mImpl->mHttpResponderID;
 }
 
-BOOL LLViewerRegion::pointInRegionGlobal(const LLVector3d &point_global) const
+bool LLViewerRegion::pointInRegionGlobal(const LLVector3d &point_global) const
 {
     LLVector3 pos_region = getPosRegionFromGlobal(point_global);
 
     if (pos_region.mV[VX] < 0)
     {
-        return FALSE;
+        return false;
     }
     if (pos_region.mV[VX] >= mWidth)
     {
-        return FALSE;
+        return false;
     }
     if (pos_region.mV[VY] < 0)
     {
-        return FALSE;
+        return false;
     }
     if (pos_region.mV[VY] >= mWidth)
     {
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 LLVector3 LLViewerRegion::getPosRegionFromGlobal(const LLVector3d &point_global) const
@@ -2197,24 +2194,24 @@ bool LLViewerRegion::isAlive()
     return mAlive;
 }
 
-BOOL LLViewerRegion::isOwnedSelf(const LLVector3& pos)
+bool LLViewerRegion::isOwnedSelf(const LLVector3& pos)
 {
     if (mParcelOverlay)
     {
         return mParcelOverlay->isOwnedSelf(pos);
     } else {
-        return FALSE;
+        return false;
     }
 }
 
 // Owned by a group you belong to?  (officer or member)
-BOOL LLViewerRegion::isOwnedGroup(const LLVector3& pos)
+bool LLViewerRegion::isOwnedGroup(const LLVector3& pos)
 {
     if (mParcelOverlay)
     {
         return mParcelOverlay->isOwnedGroup(pos);
     } else {
-        return FALSE;
+        return false;
     }
 }
 
@@ -2259,7 +2256,7 @@ public:
         LLSD::array_iterator
             locs_it = locs.beginArray(),
             agents_it = agents.beginArray();
-        BOOL has_agent_data = input["body"].has("AgentData");
+        bool has_agent_data = input["body"].has("AgentData");
 
         for(int i=0;
             locs_it != locs.endArray();
@@ -2327,7 +2324,7 @@ void LLViewerRegion::updateCoarseLocations(LLMessageSystem* msg)
     msg->getS16Fast(_PREHASH_Index, _PREHASH_You, agent_index);
     msg->getS16Fast(_PREHASH_Index, _PREHASH_Prey, target_index);
 
-    BOOL has_agent_data = msg->has(_PREHASH_AgentData);
+    bool has_agent_data = msg->has(_PREHASH_AgentData);
     S32 count = msg->getNumberOfBlocksFast(_PREHASH_Location);
     for(S32 i = 0; i < count; i++)
     {
@@ -2484,13 +2481,30 @@ void LLViewerRegion::setSimulatorFeatures(const LLSD& sim_features)
             {
                 gSavedSettings.setBOOL("UIPreviewMaterial", false);
             }
+
+            if (features.has("GLTFEnabled"))
+            {
+                bool enabled = features["GLTFEnabled"];
+                gSavedSettings.setBOOL("GLTFEnabled", enabled);
+            }
+            else
+            {
+                gSavedSettings.setBOOL("GLTFEnabled", false);
+            }
+
+            if (features.has("PBRTerrainTransformsEnabled"))
+            {
+                bool enabled = features["PBRTerrainTransformsEnabled"];
+                gSavedSettings.setBOOL("RenderTerrainPBRTransformsEnabled", enabled);
+            }
+            else
+            {
+                gSavedSettings.setBOOL("RenderTerrainPBRTransformsEnabled", false);
+            }
         };
 
-    auto workqueue = LL::WorkQueue::getInstance("mainloop");
-    if (workqueue)
-    {
-        LL::WorkQueue::postMaybe(workqueue, work);
-    }
+
+    LLAppViewer::instance()->postToMainCoro(work);
 }
 
 //this is called when the parent is not cacheable.
@@ -2659,10 +2673,9 @@ void LLViewerRegion::decodeBoundingInfo(LLVOCacheEntry* entry)
         if(iter != mOrphanMap.end())
         {
             std::vector<U32>* orphans = &mOrphanMap[entry->getLocalID()];
-            S32 size = orphans->size();
-            for(S32 i = 0; i < size; i++)
+            for (U32 orphan : *orphans)
             {
-                LLVOCacheEntry* child = getCacheEntry((*orphans)[i]);
+                LLVOCacheEntry* child = getCacheEntry(orphan);
                 if(child)
                 {
                     entry->addChild(child);
@@ -2841,7 +2854,11 @@ bool LLViewerRegion::probeCache(U32 local_id, U32 crc, U32 flags, U8 &cache_miss
 
             if(entry->isState(LLVOCacheEntry::ACTIVE))
             {
-                ((LLDrawable*)entry->getEntry()->getDrawable())->getVObj()->loadFlags(flags);
+                LLDrawable* drawable = (LLDrawable*)entry->getEntry()->getDrawable();
+                if (drawable && drawable->getVObj())
+                {
+                    drawable->getVObj()->loadFlags(flags);
+                }
                 return true;
             }
 
@@ -2888,7 +2905,7 @@ void LLViewerRegion::requestCacheMisses()
     }
 
     LLMessageSystem* msg = gMessageSystem;
-    BOOL start_new_message = TRUE;
+    bool start_new_message = true;
     S32 blocks = 0;
 
     //send requests for all cache-missed objects
@@ -2900,7 +2917,7 @@ void LLViewerRegion::requestCacheMisses()
             msg->nextBlockFast(_PREHASH_AgentData);
             msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
             msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
-            start_new_message = FALSE;
+            start_new_message = false;
         }
 
         msg->nextBlockFast(_PREHASH_ObjectData);
@@ -2914,7 +2931,7 @@ void LLViewerRegion::requestCacheMisses()
         if (blocks >= 255)
         {
             sendReliableMessage();
-            start_new_message = TRUE;
+            start_new_message = true;
             blocks = 0;
         }
     }
@@ -2925,9 +2942,9 @@ void LLViewerRegion::requestCacheMisses()
         sendReliableMessage();
     }
 
-    mCacheDirty = TRUE ;
+    mCacheDirty = true ;
     // LL_INFOS() << "KILLDEBUG Sent cache miss full " << full_count << " crc " << crc_count << LL_ENDL;
-    LLViewerStatsRecorder::instance().requestCacheMissesEvent(mCacheMissList.size());
+    LLViewerStatsRecorder::instance().requestCacheMissesEvent(static_cast<S32>(mCacheMissList.size()));
 
     mCacheMissList.clear();
 }
@@ -2986,7 +3003,7 @@ void LLViewerRegion::unpackRegionHandshake()
     U8 sim_access;
     std::string sim_name;
     LLUUID sim_owner;
-    BOOL is_estate_manager;
+    bool is_estate_manager;
     F32 water_height;
     F32 billable_factor;
     LLUUID cache_id;
@@ -3125,6 +3142,17 @@ void LLViewerRegion::unpackRegionHandshake()
         {
             compp->setParamsReady();
         }
+
+        LLPBRTerrainFeatures::queueQuery(*this, [](LLUUID region_id, bool success, const LLModifyRegion& composition_changes)
+        {
+            if (!success) { return; }
+            LLViewerRegion* region = LLWorld::getInstance()->getRegionFromID(region_id);
+            if (!region) { return; }
+            LLVLComposition* compp = region->getComposition();
+            if (!compp) { return; }
+            compp->apply(composition_changes);
+            LLFloaterRegionInfo::sRefreshFromRegion(region);
+        });
     }
 
 
@@ -3223,6 +3251,7 @@ void LLViewerRegionImpl::buildCapabilityNames(LLSD& capabilityNames)
     capabilityNames.append("MapLayerGod");
     capabilityNames.append("MeshUploadFlag");
     capabilityNames.append("ModifyMaterialParams");
+    capabilityNames.append("ModifyRegion");
     capabilityNames.append("NavMeshGenerationStatus");
     capabilityNames.append("NewFileAgentInventory");
     capabilityNames.append("ObjectAnimation");
@@ -3536,7 +3565,7 @@ void LLViewerRegion::setInterestListMode(const std::string &new_mode)
     {
         mInterestListMode = new_mode;
 
-        if (mInterestListMode != std::string(IL_MODE_DEFAULT) && mInterestListMode != std::string(IL_MODE_360))
+        if (mInterestListMode != IL_MODE_DEFAULT && mInterestListMode != IL_MODE_360)
         {
             LL_WARNS("360Capture") << "Region " << getRegionID() << " setInterestListMode() invalid interest list mode: "
                 << mInterestListMode << ", setting to default" << LL_ENDL;
@@ -3644,12 +3673,12 @@ void LLViewerRegion::showReleaseNotes()
     if (url.empty()) {
         // HACK haven't received the capability yet, we'll wait until
         // it arives.
-        mReleaseNotesRequested = TRUE;
+        mReleaseNotesRequested = true;
         return;
     }
 
     LLWeb::loadURL(url);
-    mReleaseNotesRequested = FALSE;
+    mReleaseNotesRequested = false;
 }
 
 std::string LLViewerRegion::getDescription() const
diff --git a/indra/newview/llviewerregion.h b/indra/newview/llviewerregion.h
index d598406952..68247dc18e 100644
--- a/indra/newview/llviewerregion.h
+++ b/indra/newview/llviewerregion.h
@@ -53,6 +53,11 @@ const U32   MAX_OBJECT_CACHE_ENTRIES = 50000;
 // Region handshake flags
 const U32 REGION_HANDSHAKE_SUPPORTS_SELF_APPEARANCE = 1U << 2;
 
+// Interest list mode,
+// in use by agent and region classes so must exist before region classes
+const std::string IL_MODE_DEFAULT = "default";
+const std::string IL_MODE_360 = "360";
+
 class LLEventPoll;
 class LLVLComposition;
 class LLViewerObject;
@@ -118,34 +123,34 @@ public:
     //void setAgentOffset(const LLVector3d &offset);
     void updateRenderMatrix();
 
-    void setAllowDamage(BOOL b) { setRegionFlag(REGION_FLAGS_ALLOW_DAMAGE, b); }
-    void setAllowLandmark(BOOL b) { setRegionFlag(REGION_FLAGS_ALLOW_LANDMARK, b); }
-    void setAllowSetHome(BOOL b) { setRegionFlag(REGION_FLAGS_ALLOW_SET_HOME, b); }
-    void setResetHomeOnTeleport(BOOL b) { setRegionFlag(REGION_FLAGS_RESET_HOME_ON_TELEPORT, b); }
-    void setSunFixed(BOOL b) { setRegionFlag(REGION_FLAGS_SUN_FIXED, b); }
-    //void setBlockFly(BOOL b) { setRegionFlag(REGION_FLAGS_BLOCK_FLY, b); }        Never used
-    void setAllowDirectTeleport(BOOL b) { setRegionFlag(REGION_FLAGS_ALLOW_DIRECT_TELEPORT, b); }
-
-
-    inline BOOL getAllowDamage()            const;
-    inline BOOL getAllowLandmark()          const;
-    inline BOOL getAllowSetHome()           const;
-    inline BOOL getResetHomeOnTeleport()    const;
-    inline BOOL getSunFixed()               const;
-    inline BOOL getBlockFly()               const;
-    inline BOOL getAllowDirectTeleport()    const;
-    inline BOOL isPrelude()                 const;
-    inline BOOL getAllowTerraform()         const;
-    inline BOOL getRestrictPushObject()     const;
-    inline BOOL getAllowEnvironmentOverride()   const;
-    inline BOOL getReleaseNotesRequested()      const;
+    void setAllowDamage(bool b) { setRegionFlag(REGION_FLAGS_ALLOW_DAMAGE, b); }
+    void setAllowLandmark(bool b) { setRegionFlag(REGION_FLAGS_ALLOW_LANDMARK, b); }
+    void setAllowSetHome(bool b) { setRegionFlag(REGION_FLAGS_ALLOW_SET_HOME, b); }
+    void setResetHomeOnTeleport(bool b) { setRegionFlag(REGION_FLAGS_RESET_HOME_ON_TELEPORT, b); }
+    void setSunFixed(bool b) { setRegionFlag(REGION_FLAGS_SUN_FIXED, b); }
+    //void setBlockFly(bool b) { setRegionFlag(REGION_FLAGS_BLOCK_FLY, b); }        Never used
+    void setAllowDirectTeleport(bool b) { setRegionFlag(REGION_FLAGS_ALLOW_DIRECT_TELEPORT, b); }
+
+
+    inline bool getAllowDamage()            const;
+    inline bool getAllowLandmark()          const;
+    inline bool getAllowSetHome()           const;
+    inline bool getResetHomeOnTeleport()    const;
+    inline bool getSunFixed()               const;
+    inline bool getBlockFly()               const;
+    inline bool getAllowDirectTeleport()    const;
+    inline bool isPrelude()                 const;
+    inline bool getAllowTerraform()         const;
+    inline bool getRestrictPushObject()     const;
+    inline bool getAllowEnvironmentOverride()   const;
+    inline bool getReleaseNotesRequested()      const;
 
     bool isAlive(); // can become false if circuit disconnects
 
     void setWaterHeight(F32 water_level);
     F32 getWaterHeight() const;
 
-    BOOL isVoiceEnabled() const;
+    bool isVoiceEnabled() const;
 
     void setBillableFactor(F32 billable_factor) { mBillableFactor = billable_factor; }
     F32 getBillableFactor()         const   { return mBillableFactor; }
@@ -171,13 +176,13 @@ public:
     LLViewerParcelOverlay *getParcelOverlay() const
             { return mParcelOverlay; }
 
-    inline void setRegionFlag(U64 flag, BOOL on);
-    inline BOOL getRegionFlag(U64 flag) const;
+    inline void setRegionFlag(U64 flag, bool on);
+    inline bool getRegionFlag(U64 flag) const;
     void setRegionFlags(U64 flags);
     U64 getRegionFlags() const                  { return mRegionFlags; }
 
-    inline void setRegionProtocol(U64 protocol, BOOL on);
-    BOOL getRegionProtocol(U64 protocol) const;
+    inline void setRegionProtocol(U64 protocol, bool on);
+    bool getRegionProtocol(U64 protocol) const;
     void setRegionProtocols(U64 protocols)          { mRegionProtocols = protocols; }
     U64 getRegionProtocols() const                  { return mRegionProtocols; }
 
@@ -200,9 +205,9 @@ public:
     const LLUUID& getOwner() const;
 
     // Is the current agent on the estate manager list for this region?
-    void setIsEstateManager(BOOL b) { mIsEstateManager = b; }
-    BOOL isEstateManager() const { return mIsEstateManager; }
-    BOOL canManageEstate() const;
+    void setIsEstateManager(bool b) { mIsEstateManager = b; }
+    bool isEstateManager() const { return mIsEstateManager; }
+    bool canManageEstate() const;
 
     void setSimAccess(U8 sim_access)            { mSimAccess = sim_access; }
     U8 getSimAccess() const                     { return mSimAccess; }
@@ -234,7 +239,7 @@ public:
     static void processRegionInfo(LLMessageSystem* msg, void**);
 
     //check if the viewer camera is static
-    static BOOL isViewerCameraStatic();
+    static bool isViewerCameraStatic();
     static void calcNewObjectCreationThrottle();
 
     void setCacheID(const LLUUID& id);
@@ -305,7 +310,7 @@ public:
     const LLUUID& getRegionID() const;
     void setRegionID(const LLUUID& region_id);
 
-    BOOL pointInRegionGlobal(const LLVector3d &point_global) const;
+    bool pointInRegionGlobal(const LLVector3d &point_global) const;
     LLVector3   getPosRegionFromGlobal(const LLVector3d &point_global) const;
     LLVector3   getPosRegionFromAgent(const LLVector3 &agent_pos) const;
     LLVector3   getPosAgentFromRegion(const LLVector3 &region_pos) const;
@@ -314,10 +319,10 @@ public:
     LLVLComposition *getComposition() const;
     F32 getCompositionXY(const S32 x, const S32 y) const;
 
-    BOOL isOwnedSelf(const LLVector3& pos);
+    bool isOwnedSelf(const LLVector3& pos);
 
     // Owned by a group you belong to?  (officer OR member)
-    BOOL isOwnedGroup(const LLVector3& pos);
+    bool isOwnedGroup(const LLVector3& pos);
 
     // deal with map object updates in the world.
     void updateCoarseLocations(LLMessageSystem* msg);
@@ -415,12 +420,12 @@ public:
     void removeFromCreatedList(U32 local_id);
     void addToCreatedList(U32 local_id);
 
-    BOOL isPaused() const {return mPaused;}
+    bool isPaused() const {return mPaused;}
     S32  getLastUpdate() const {return mLastUpdate;}
 
     std::string getSimHostName();
 
-    static BOOL isNewObjectCreationThrottleDisabled() {return sNewObjectCreationThrottle < 0;}
+    static bool isNewObjectCreationThrottleDisabled() {return sNewObjectCreationThrottle < 0;}
 
     // rebuild reflection probe list
     void updateReflectionProbes();
@@ -473,7 +478,7 @@ public:
     std::vector<U32> mMapAvatars;
     std::vector<LLUUID> mMapAvatarIDs;
 
-    static BOOL sVOCacheCullingEnabled; //vo cache culling enabled or not.
+    static bool sVOCacheCullingEnabled; //vo cache culling enabled or not.
     static S32  sLastCameraUpdated;
 
     LLFrameTimer &  getRenderInfoRequestTimer() { return mRenderInfoRequestTimer; };
@@ -508,9 +513,6 @@ public:
 
     void resetInterestList();
 
-    static const std::string IL_MODE_DEFAULT;
-    static const std::string IL_MODE_360;
-
   private:
     static S32  sNewObjectCreationThrottle;
     LLViewerRegionImpl * mImpl;
@@ -526,7 +528,7 @@ public:
     std::string mZoning;
 
     // Is this agent on the estate managers list for this region?
-    BOOL mIsEstateManager;
+    bool mIsEstateManager;
 
     U32     mPacketsIn;
     U32Bits mBitsIn,
@@ -562,13 +564,13 @@ public:
     // Maps local ids to cache entries.
     // Regions can have order 10,000 objects, so assume
     // a structure of size 2^14 = 16,000
-    BOOL                                    mCacheLoaded;
-    BOOL                                    mCacheDirty;
-    BOOL    mAlive;                 // can become false if circuit disconnects
-    BOOL    mSimulatorFeaturesReceived;
-    BOOL    mReleaseNotesRequested;
-    BOOL    mDead;  //if true, this region is in the process of deleting.
-    BOOL    mPaused; //pause processing the objects in the region
+    bool                                    mCacheLoaded;
+    bool                                    mCacheDirty;
+    bool    mAlive;                 // can become false if circuit disconnects
+    bool    mSimulatorFeaturesReceived;
+    bool    mReleaseNotesRequested;
+    bool    mDead;  //if true, this region is in the process of deleting.
+    bool    mPaused; //pause processing the objects in the region
 
     typedef enum
     {
@@ -617,12 +619,12 @@ public:
 
 };
 
-inline BOOL LLViewerRegion::getRegionProtocol(U64 protocol) const
+inline bool LLViewerRegion::getRegionProtocol(U64 protocol) const
 {
     return ((mRegionProtocols & protocol) != 0);
 }
 
-inline void LLViewerRegion::setRegionProtocol(U64 protocol, BOOL on)
+inline void LLViewerRegion::setRegionProtocol(U64 protocol, bool on)
 {
     if (on)
     {
@@ -634,12 +636,12 @@ inline void LLViewerRegion::setRegionProtocol(U64 protocol, BOOL on)
     }
 }
 
-inline BOOL LLViewerRegion::getRegionFlag(U64 flag) const
+inline bool LLViewerRegion::getRegionFlag(U64 flag) const
 {
     return ((mRegionFlags & flag) != 0);
 }
 
-inline void LLViewerRegion::setRegionFlag(U64 flag, BOOL on)
+inline void LLViewerRegion::setRegionFlag(U64 flag, bool on)
 {
     if (on)
     {
@@ -651,62 +653,62 @@ inline void LLViewerRegion::setRegionFlag(U64 flag, BOOL on)
     }
 }
 
-inline BOOL LLViewerRegion::getAllowDamage() const
+inline bool LLViewerRegion::getAllowDamage() const
 {
     return ((mRegionFlags & REGION_FLAGS_ALLOW_DAMAGE) !=0);
 }
 
-inline BOOL LLViewerRegion::getAllowLandmark() const
+inline bool LLViewerRegion::getAllowLandmark() const
 {
     return ((mRegionFlags & REGION_FLAGS_ALLOW_LANDMARK) !=0);
 }
 
-inline BOOL LLViewerRegion::getAllowSetHome() const
+inline bool LLViewerRegion::getAllowSetHome() const
 {
     return ((mRegionFlags & REGION_FLAGS_ALLOW_SET_HOME) != 0);
 }
 
-inline BOOL LLViewerRegion::getResetHomeOnTeleport() const
+inline bool LLViewerRegion::getResetHomeOnTeleport() const
 {
     return ((mRegionFlags & REGION_FLAGS_RESET_HOME_ON_TELEPORT) !=0);
 }
 
-inline BOOL LLViewerRegion::getSunFixed() const
+inline bool LLViewerRegion::getSunFixed() const
 {
     return ((mRegionFlags & REGION_FLAGS_SUN_FIXED) !=0);
 }
 
-inline BOOL LLViewerRegion::getBlockFly() const
+inline bool LLViewerRegion::getBlockFly() const
 {
     return ((mRegionFlags & REGION_FLAGS_BLOCK_FLY) !=0);
 }
 
-inline BOOL LLViewerRegion::getAllowDirectTeleport() const
+inline bool LLViewerRegion::getAllowDirectTeleport() const
 {
     return ((mRegionFlags & REGION_FLAGS_ALLOW_DIRECT_TELEPORT) !=0);
 }
 
-inline BOOL LLViewerRegion::isPrelude() const
+inline bool LLViewerRegion::isPrelude() const
 {
     return is_prelude( mRegionFlags );
 }
 
-inline BOOL LLViewerRegion::getAllowTerraform() const
+inline bool LLViewerRegion::getAllowTerraform() const
 {
     return ((mRegionFlags & REGION_FLAGS_BLOCK_TERRAFORM) == 0);
 }
 
-inline BOOL LLViewerRegion::getRestrictPushObject() const
+inline bool LLViewerRegion::getRestrictPushObject() const
 {
     return ((mRegionFlags & REGION_FLAGS_RESTRICT_PUSHOBJECT) != 0);
 }
 
-inline BOOL LLViewerRegion::getAllowEnvironmentOverride() const
+inline bool LLViewerRegion::getAllowEnvironmentOverride() const
 {
     return ((mRegionFlags & REGION_FLAGS_ALLOW_ENVIRONMENT_OVERRIDE) != 0);
 }
 
-inline BOOL LLViewerRegion::getReleaseNotesRequested() const
+inline bool LLViewerRegion::getReleaseNotesRequested() const
 {
     return mReleaseNotesRequested;
 }
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index d0846e3017..12d0aa4f8e 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -64,7 +64,7 @@ using std::pair;
 using std::make_pair;
 using std::string;
 
-BOOL                LLViewerShaderMgr::sInitialized = FALSE;
+bool                LLViewerShaderMgr::sInitialized = false;
 bool                LLViewerShaderMgr::sSkipReload = false;
 
 LLVector4           gShinyOrigin;
@@ -228,6 +228,9 @@ LLGLSLShader            gDeferredPBRAlphaProgram;
 LLGLSLShader            gDeferredSkinnedPBRAlphaProgram;
 LLGLSLShader            gDeferredPBRTerrainProgram;
 
+LLGLSLShader            gGLTFPBRMetallicRoughnessProgram;
+
+
 //helper for making a rigged variant of a given shader
 static bool make_rigged_variant(LLGLSLShader& shader, LLGLSLShader& riggedShader)
 {
@@ -235,13 +238,110 @@ static bool make_rigged_variant(LLGLSLShader& shader, LLGLSLShader& riggedShader
     riggedShader.mFeatures = shader.mFeatures;
     riggedShader.mFeatures.hasObjectSkinning = true;
     riggedShader.mDefines = shader.mDefines;    // NOTE: Must come before addPermutation
+
     riggedShader.addPermutation("HAS_SKIN", "1");
     riggedShader.mShaderFiles = shader.mShaderFiles;
     riggedShader.mShaderLevel = shader.mShaderLevel;
     riggedShader.mShaderGroup = shader.mShaderGroup;
 
     shader.mRiggedVariant = &riggedShader;
-    return riggedShader.createShader(NULL, NULL);
+    return riggedShader.createShader();
+}
+
+
+static bool make_gltf_variant(LLGLSLShader& shader, LLGLSLShader& variant, bool alpha_blend, bool rigged, bool unlit, bool multi_uv, bool use_sun_shadow)
+{
+    variant.mName = shader.mName.c_str();
+    variant.mFeatures = shader.mFeatures;
+    variant.mShaderFiles = shader.mShaderFiles;
+    variant.mShaderLevel = shader.mShaderLevel;
+    variant.mShaderGroup = shader.mShaderGroup;
+
+    variant.mDefines = shader.mDefines;    // NOTE: Must come before addPermutation
+
+    U32 node_size = 16 * 3;
+    U32 max_nodes = gGLManager.mMaxUniformBlockSize / node_size;
+    variant.addPermutation("MAX_NODES_PER_GLTF_OBJECT", std::to_string(max_nodes));
+
+    U32 material_size = 16 * 12;
+    U32 max_materials = gGLManager.mMaxUniformBlockSize / material_size;
+    LLGLSLShader::sMaxGLTFMaterials = max_materials;
+
+    variant.addPermutation("MAX_MATERIALS_PER_GLTF_OBJECT", std::to_string(max_materials));
+
+    U32 max_vec4s = gGLManager.mMaxUniformBlockSize / 16;
+    variant.addPermutation("MAX_UBO_VEC4S", std::to_string(max_vec4s));
+
+    if (rigged)
+    {
+        variant.addPermutation("HAS_SKIN", "1");
+    }
+
+    if (unlit)
+    {
+        variant.addPermutation("UNLIT", "1");
+    }
+
+    if (multi_uv)
+    {
+        variant.addPermutation("MULTI_UV", "1");
+    }
+
+    if (alpha_blend)
+    {
+        variant.addPermutation("ALPHA_BLEND", "1");
+
+        variant.mFeatures.calculatesLighting = false;
+        variant.mFeatures.hasLighting = false;
+        variant.mFeatures.isAlphaLighting = true;
+        variant.mFeatures.hasSrgb = true;
+        variant.mFeatures.calculatesAtmospherics = true;
+        variant.mFeatures.hasAtmospherics = true;
+        variant.mFeatures.hasGamma = true;
+        variant.mFeatures.hasShadows = use_sun_shadow;
+        variant.mFeatures.isDeferred = true; // include deferredUtils
+        variant.mFeatures.hasReflectionProbes = true;
+
+        if (use_sun_shadow)
+        {
+            variant.addPermutation("HAS_SUN_SHADOW", "1");
+        }
+
+        bool success = variant.createShader();
+        llassert(success);
+
+        // Alpha Shader Hack
+        // See: LLRender::syncMatrices()
+        variant.mFeatures.calculatesLighting = true;
+        variant.mFeatures.hasLighting = true;
+
+        return success;
+    }
+    else
+    {
+        return variant.createShader();
+    }
+}
+
+static bool make_gltf_variants(LLGLSLShader& shader, bool use_sun_shadow)
+{
+    shader.mFeatures.mGLTF = true;
+    shader.mGLTFVariants.resize(LLGLSLShader::NUM_GLTF_VARIANTS);
+
+    for (U32 i = 0; i < LLGLSLShader::NUM_GLTF_VARIANTS; ++i)
+    {
+        bool alpha_blend = i & LLGLSLShader::GLTFVariant::ALPHA_BLEND;
+        bool rigged = i & LLGLSLShader::GLTFVariant::RIGGED;
+        bool unlit = i & LLGLSLShader::GLTFVariant::UNLIT;
+        bool multi_uv = i & LLGLSLShader::GLTFVariant::MULTI_UV;
+
+        if (!make_gltf_variant(shader, shader.mGLTFVariants[i], alpha_blend, rigged, unlit, multi_uv, use_sun_shadow))
+        {
+            return false;
+        }
+    }
+
+    return true;
 }
 
 #ifdef SHOW_ASSERT
@@ -329,6 +429,7 @@ void LLViewerShaderMgr::finalizeShaderList()
     mShaderList.push_back(&gDeferredDiffuseProgram);
     mShaderList.push_back(&gDeferredBumpProgram);
     mShaderList.push_back(&gDeferredPBROpaqueProgram);
+    mShaderList.push_back(&gGLTFPBRMetallicRoughnessProgram);
     mShaderList.push_back(&gDeferredAvatarProgram);
     mShaderList.push_back(&gDeferredTerrainProgram);
     mShaderList.push_back(&gDeferredPBRTerrainProgram);
@@ -425,8 +526,8 @@ void LLViewerShaderMgr::setShaders()
     // when using indexed texture rendering, leave some texture units available for shadow and reflection maps
     static LLCachedControl<S32> reserved_texture_units(gSavedSettings, "RenderReservedTextureIndices", 14);
 
-    LLGLSLShader::sIndexedTextureChannels =
-        llclamp<S32>(max_texture_index, 1, gGLManager.mNumTextureImageUnits-reserved_texture_units);
+    LLGLSLShader::sIndexedTextureChannels = 4;
+        //llclamp<S32>(max_texture_index, 1, gGLManager.mNumTextureImageUnits-reserved_texture_units);
 
     reentrance = true;
 
@@ -505,7 +606,7 @@ void LLViewerShaderMgr::setShaders()
 
     gPipeline.mShadersLoaded = true;
 
-    BOOL loaded = loadShadersWater();
+    bool loaded = loadShadersWater();
 
     if (loaded)
     {
@@ -652,7 +753,7 @@ std::string LLViewerShaderMgr::loadBasicShaders()
     attribs["MAX_JOINTS_PER_MESH_OBJECT"] =
         std::to_string(LLSkinningUtil::getMaxJointCount());
 
-    BOOL ssr = gSavedSettings.getBOOL("RenderScreenSpaceReflections");
+    bool ssr = gSavedSettings.getBOOL("RenderScreenSpaceReflections");
 
     bool has_reflection_probes = gSavedSettings.getBOOL("RenderReflectionsEnabled") && gGLManager.mGLVersion > 3.99f;
 
@@ -749,11 +850,11 @@ std::string LLViewerShaderMgr::loadBasicShaders()
     return std::string();
 }
 
-BOOL LLViewerShaderMgr::loadShadersWater()
+bool LLViewerShaderMgr::loadShadersWater()
 {
     LL_PROFILE_ZONE_SCOPED;
-    BOOL success = TRUE;
-    BOOL terrainWaterSuccess = TRUE;
+    bool success = true;
+    bool terrainWaterSuccess = true;
 
     bool use_sun_shadow = mShaderLevel[SHADER_DEFERRED] > 1 &&
         gSavedSettings.getS32("RenderShadowDetail") > 0;
@@ -763,7 +864,7 @@ BOOL LLViewerShaderMgr::loadShadersWater()
         gWaterProgram.unload();
         gWaterEdgeProgram.unload();
         gUnderWaterProgram.unload();
-        return TRUE;
+        return true;
     }
 
     if (success)
@@ -792,7 +893,7 @@ BOOL LLViewerShaderMgr::loadShadersWater()
 
         gWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;
         gWaterProgram.mShaderLevel = mShaderLevel[SHADER_WATER];
-        success = gWaterProgram.createShader(NULL, NULL);
+        success = gWaterProgram.createShader();
         llassert(success);
     }
 
@@ -822,7 +923,7 @@ BOOL LLViewerShaderMgr::loadShadersWater()
         }
         gWaterEdgeProgram.mShaderGroup = LLGLSLShader::SG_WATER;
         gWaterEdgeProgram.mShaderLevel = mShaderLevel[SHADER_WATER];
-        success = gWaterEdgeProgram.createShader(NULL, NULL);
+        success = gWaterEdgeProgram.createShader();
         llassert(success);
     }
 
@@ -842,7 +943,7 @@ BOOL LLViewerShaderMgr::loadShadersWater()
         {
             gUnderWaterProgram.addPermutation("TRANSPARENT_WATER", "1");
         }
-        success = gUnderWaterProgram.createShader(NULL, NULL);
+        success = gUnderWaterProgram.createShader();
         llassert(success);
     }
 
@@ -856,7 +957,7 @@ BOOL LLViewerShaderMgr::loadShadersWater()
     if (!success)
     {
         mShaderLevel[SHADER_WATER] = 0;
-        return FALSE;
+        return false;
     }
 
     // if we failed to load the terrain water shaders and we need them (using class2 water),
@@ -869,19 +970,19 @@ BOOL LLViewerShaderMgr::loadShadersWater()
 
     LLWorld::getInstance()->updateWaterObjects();
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLViewerShaderMgr::loadShadersEffects()
+bool LLViewerShaderMgr::loadShadersEffects()
 {
     LL_PROFILE_ZONE_SCOPED;
-    BOOL success = TRUE;
+    bool success = true;
 
     if (mShaderLevel[SHADER_EFFECT] == 0)
     {
         gGlowProgram.unload();
         gGlowExtractProgram.unload();
-        return TRUE;
+        return true;
     }
 
     if (success)
@@ -891,10 +992,10 @@ BOOL LLViewerShaderMgr::loadShadersEffects()
         gGlowProgram.mShaderFiles.push_back(make_pair("effects/glowV.glsl", GL_VERTEX_SHADER));
         gGlowProgram.mShaderFiles.push_back(make_pair("effects/glowF.glsl", GL_FRAGMENT_SHADER));
         gGlowProgram.mShaderLevel = mShaderLevel[SHADER_EFFECT];
-        success = gGlowProgram.createShader(NULL, NULL);
+        success = gGlowProgram.createShader();
         if (!success)
         {
-            LLPipeline::sRenderGlow = FALSE;
+            LLPipeline::sRenderGlow = false;
         }
     }
 
@@ -914,10 +1015,10 @@ BOOL LLViewerShaderMgr::loadShadersEffects()
             gGlowExtractProgram.addPermutation("HAS_NOISE", "1");
         }
 
-        success = gGlowExtractProgram.createShader(NULL, NULL);
+        success = gGlowExtractProgram.createShader();
         if (!success)
         {
-            LLPipeline::sRenderGlow = FALSE;
+            LLPipeline::sRenderGlow = false;
         }
     }
 
@@ -925,7 +1026,7 @@ BOOL LLViewerShaderMgr::loadShadersEffects()
 
 }
 
-BOOL LLViewerShaderMgr::loadShadersDeferred()
+bool LLViewerShaderMgr::loadShadersDeferred()
 {
     LL_PROFILE_ZONE_SCOPED;
     bool use_sun_shadow = mShaderLevel[SHADER_DEFERRED] > 1 &&
@@ -1019,15 +1120,16 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gHUDPBROpaqueProgram.unload();
         gPBRGlowProgram.unload();
         gDeferredPBROpaqueProgram.unload();
+        gGLTFPBRMetallicRoughnessProgram.unload();
         gDeferredSkinnedPBROpaqueProgram.unload();
         gDeferredPBRAlphaProgram.unload();
         gDeferredSkinnedPBRAlphaProgram.unload();
         gDeferredPBRTerrainProgram.unload();
 
-        return TRUE;
+        return true;
     }
 
-    BOOL success = TRUE;
+    bool success = true;
 
     if (success)
     {
@@ -1036,7 +1138,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredHighlightProgram.mShaderFiles.push_back(make_pair("interface/highlightV.glsl", GL_VERTEX_SHADER));
         gDeferredHighlightProgram.mShaderFiles.push_back(make_pair("deferred/highlightF.glsl", GL_FRAGMENT_SHADER));
         gDeferredHighlightProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gDeferredHighlightProgram.createShader(NULL, NULL);
+        success = gDeferredHighlightProgram.createShader();
     }
 
     if (success)
@@ -1049,7 +1151,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredDiffuseProgram.mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
         gDeferredDiffuseProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         success = make_rigged_variant(gDeferredDiffuseProgram, gDeferredSkinnedDiffuseProgram);
-        success = success && gDeferredDiffuseProgram.createShader(NULL, NULL);
+        success = success && gDeferredDiffuseProgram.createShader();
     }
 
     if (success)
@@ -1061,7 +1163,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredDiffuseAlphaMaskProgram.mFeatures.mIndexedTextureChannels = LLGLSLShader::sIndexedTextureChannels;
         gDeferredDiffuseAlphaMaskProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         success = make_rigged_variant(gDeferredDiffuseAlphaMaskProgram, gDeferredSkinnedDiffuseAlphaMaskProgram);
-        success = success && gDeferredDiffuseAlphaMaskProgram.createShader(NULL, NULL);
+        success = success && gDeferredDiffuseAlphaMaskProgram.createShader();
     }
 
     if (success)
@@ -1071,7 +1173,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredNonIndexedDiffuseAlphaMaskProgram.mShaderFiles.push_back(make_pair("deferred/diffuseV.glsl", GL_VERTEX_SHADER));
         gDeferredNonIndexedDiffuseAlphaMaskProgram.mShaderFiles.push_back(make_pair("deferred/diffuseAlphaMaskF.glsl", GL_FRAGMENT_SHADER));
         gDeferredNonIndexedDiffuseAlphaMaskProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredNonIndexedDiffuseAlphaMaskProgram.createShader(NULL, NULL);
+        success = gDeferredNonIndexedDiffuseAlphaMaskProgram.createShader();
         llassert(success);
     }
 
@@ -1082,7 +1184,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredNonIndexedDiffuseAlphaMaskNoColorProgram.mShaderFiles.push_back(make_pair("deferred/diffuseNoColorV.glsl", GL_VERTEX_SHADER));
         gDeferredNonIndexedDiffuseAlphaMaskNoColorProgram.mShaderFiles.push_back(make_pair("deferred/diffuseAlphaMaskNoColorF.glsl", GL_FRAGMENT_SHADER));
         gDeferredNonIndexedDiffuseAlphaMaskNoColorProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredNonIndexedDiffuseAlphaMaskNoColorProgram.createShader(NULL, NULL);
+        success = gDeferredNonIndexedDiffuseAlphaMaskNoColorProgram.createShader();
         llassert(success);
     }
 
@@ -1094,7 +1196,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredBumpProgram.mShaderFiles.push_back(make_pair("deferred/bumpF.glsl", GL_FRAGMENT_SHADER));
         gDeferredBumpProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         success = make_rigged_variant(gDeferredBumpProgram, gDeferredSkinnedBumpProgram);
-        success = success && gDeferredBumpProgram.createShader(NULL, NULL);
+        success = success && gDeferredBumpProgram.createShader();
         llassert(success);
     }
 
@@ -1176,7 +1278,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
                 gDeferredMaterialProgram[i].mRiggedVariant = &gDeferredMaterialProgram[i + 0x10];
             }
 
-            success = gDeferredMaterialProgram[i].createShader(NULL, NULL);
+            success = gDeferredMaterialProgram[i].createShader();
             llassert(success);
         }
     }
@@ -1204,13 +1306,29 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         success = make_rigged_variant(gDeferredPBROpaqueProgram, gDeferredSkinnedPBROpaqueProgram);
         if (success)
         {
-            success = gDeferredPBROpaqueProgram.createShader(NULL, NULL);
+            success = gDeferredPBROpaqueProgram.createShader();
         }
         llassert(success);
     }
 
     if (success)
     {
+        gGLTFPBRMetallicRoughnessProgram.mName = "GLTF PBR Metallic Roughness Shader";
+        gGLTFPBRMetallicRoughnessProgram.mFeatures.hasSrgb = true;
+
+        gGLTFPBRMetallicRoughnessProgram.mShaderFiles.clear();
+        gGLTFPBRMetallicRoughnessProgram.mShaderFiles.push_back(make_pair("gltf/pbrmetallicroughnessV.glsl", GL_VERTEX_SHADER));
+        gGLTFPBRMetallicRoughnessProgram.mShaderFiles.push_back(make_pair("gltf/pbrmetallicroughnessF.glsl", GL_FRAGMENT_SHADER));
+        gGLTFPBRMetallicRoughnessProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
+        gGLTFPBRMetallicRoughnessProgram.clearPermutations();
+
+        success = make_gltf_variants(gGLTFPBRMetallicRoughnessProgram, use_sun_shadow);
+
+        llassert(success);
+    }
+
+    if (success)
+    {
         gPBRGlowProgram.mName = " PBR Glow Shader";
         gPBRGlowProgram.mFeatures.hasSrgb = true;
         gPBRGlowProgram.mShaderFiles.clear();
@@ -1221,7 +1339,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         success = make_rigged_variant(gPBRGlowProgram, gPBRGlowSkinnedProgram);
         if (success)
         {
-            success = gPBRGlowProgram.createShader(NULL, NULL);
+            success = gPBRGlowProgram.createShader();
         }
         llassert(success);
     }
@@ -1237,7 +1355,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gHUDPBROpaqueProgram.clearPermutations();
         gHUDPBROpaqueProgram.addPermutation("IS_HUD", "1");
 
-        success = gHUDPBROpaqueProgram.createShader(NULL, NULL);
+        success = gHUDPBROpaqueProgram.createShader();
 
         llassert(success);
     }
@@ -1282,7 +1400,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         success = make_rigged_variant(*shader, gDeferredSkinnedPBRAlphaProgram);
         if (success)
         {
-            success = shader->createShader(NULL, NULL);
+            success = shader->createShader();
         }
         llassert(success);
 
@@ -1311,7 +1429,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         shader->addPermutation("IS_HUD", "1");
 
         shader->mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = shader->createShader(NULL, NULL);
+        success = shader->createShader();
         llassert(success);
     }
 
@@ -1325,7 +1443,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
                 (mapping == 1 ? "flat" : "triplanar"));
         gDeferredPBRTerrainProgram.mFeatures.hasSrgb = true;
         gDeferredPBRTerrainProgram.mFeatures.isAlphaLighting = true;
-        gDeferredPBRTerrainProgram.mFeatures.disableTextureIndex = true; //hack to disable auto-setup of texture channels
         gDeferredPBRTerrainProgram.mFeatures.calculatesAtmospherics = true;
         gDeferredPBRTerrainProgram.mFeatures.hasAtmospherics = true;
         gDeferredPBRTerrainProgram.mFeatures.hasGamma = true;
@@ -1338,7 +1455,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredPBRTerrainProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gDeferredPBRTerrainProgram.addPermutation("TERRAIN_PBR_DETAIL", llformat("%d", detail));
         gDeferredPBRTerrainProgram.addPermutation("TERRAIN_PLANAR_TEXTURE_SAMPLE_COUNT", llformat("%d", mapping));
-        success = gDeferredPBRTerrainProgram.createShader(NULL, NULL);
+        success = gDeferredPBRTerrainProgram.createShader();
         llassert(success);
     }
 
@@ -1349,7 +1466,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredTreeProgram.mShaderFiles.push_back(make_pair("deferred/treeV.glsl", GL_VERTEX_SHADER));
         gDeferredTreeProgram.mShaderFiles.push_back(make_pair("deferred/treeF.glsl", GL_FRAGMENT_SHADER));
         gDeferredTreeProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredTreeProgram.createShader(NULL, NULL);
+        success = gDeferredTreeProgram.createShader();
     }
 
     if (success)
@@ -1360,7 +1477,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredTreeShadowProgram.mShaderFiles.push_back(make_pair("deferred/treeShadowF.glsl", GL_FRAGMENT_SHADER));
         gDeferredTreeShadowProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gDeferredTreeShadowProgram.mRiggedVariant = &gDeferredSkinnedTreeShadowProgram;
-        success = gDeferredTreeShadowProgram.createShader(NULL, NULL);
+        success = gDeferredTreeShadowProgram.createShader();
         llassert(success);
     }
 
@@ -1372,7 +1489,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredSkinnedTreeShadowProgram.mShaderFiles.push_back(make_pair("deferred/treeShadowSkinnedV.glsl", GL_VERTEX_SHADER));
         gDeferredSkinnedTreeShadowProgram.mShaderFiles.push_back(make_pair("deferred/treeShadowF.glsl", GL_FRAGMENT_SHADER));
         gDeferredSkinnedTreeShadowProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredSkinnedTreeShadowProgram.createShader(NULL, NULL);
+        success = gDeferredSkinnedTreeShadowProgram.createShader();
         llassert(success);
     }
 
@@ -1384,7 +1501,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredImpostorProgram.mShaderFiles.push_back(make_pair("deferred/impostorV.glsl", GL_VERTEX_SHADER));
         gDeferredImpostorProgram.mShaderFiles.push_back(make_pair("deferred/impostorF.glsl", GL_FRAGMENT_SHADER));
         gDeferredImpostorProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredImpostorProgram.createShader(NULL, NULL);
+        success = gDeferredImpostorProgram.createShader();
         llassert(success);
     }
 
@@ -1402,7 +1519,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
         gDeferredLightProgram.clearPermutations();
 
-        success = gDeferredLightProgram.createShader(NULL, NULL);
+        success = gDeferredLightProgram.createShader();
         llassert(success);
     }
 
@@ -1422,7 +1539,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
             gDeferredMultiLightProgram[i].mShaderLevel = mShaderLevel[SHADER_DEFERRED];
             gDeferredMultiLightProgram[i].addPermutation("LIGHT_COUNT", llformat("%d", i+1));
 
-            success = gDeferredMultiLightProgram[i].createShader(NULL, NULL);
+            success = gDeferredMultiLightProgram[i].createShader();
             llassert(success);
         }
     }
@@ -1440,7 +1557,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredSpotLightProgram.mShaderFiles.push_back(make_pair("deferred/spotLightF.glsl", GL_FRAGMENT_SHADER));
         gDeferredSpotLightProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
 
-        success = gDeferredSpotLightProgram.createShader(NULL, NULL);
+        success = gDeferredSpotLightProgram.createShader();
         llassert(success);
     }
 
@@ -1458,7 +1575,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredMultiSpotLightProgram.mShaderFiles.push_back(make_pair("deferred/spotLightF.glsl", GL_FRAGMENT_SHADER));
         gDeferredMultiSpotLightProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
 
-        success = gDeferredMultiSpotLightProgram.createShader(NULL, NULL);
+        success = gDeferredMultiSpotLightProgram.createShader();
         llassert(success);
     }
 
@@ -1492,7 +1609,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredSunProgram.mShaderFiles.push_back(make_pair(fragment, GL_FRAGMENT_SHADER));
         gDeferredSunProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
 
-        success = gDeferredSunProgram.createShader(NULL, NULL);
+        success = gDeferredSunProgram.createShader();
         llassert(success);
     }
 
@@ -1506,7 +1623,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredBlurLightProgram.mShaderFiles.push_back(make_pair("deferred/blurLightF.glsl", GL_FRAGMENT_SHADER));
         gDeferredBlurLightProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
 
-        success = gDeferredBlurLightProgram.createShader(NULL, NULL);
+        success = gDeferredBlurLightProgram.createShader();
         llassert(success);
     }
 
@@ -1539,7 +1656,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
             shader->mFeatures.calculatesLighting = false;
             shader->mFeatures.hasLighting = false;
             shader->mFeatures.isAlphaLighting = true;
-            shader->mFeatures.disableTextureIndex = true; //hack to disable auto-setup of texture channels
             shader->mFeatures.hasSrgb = true;
             shader->mFeatures.calculatesAtmospherics = true;
             shader->mFeatures.hasAtmospherics = true;
@@ -1573,7 +1689,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
             shader->mShaderLevel = mShaderLevel[SHADER_DEFERRED];
 
-            success = shader->createShader(NULL, NULL);
+            success = shader->createShader();
             llassert(success);
 
             // Hack
@@ -1632,7 +1748,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
             {
                 shader->mRiggedVariant = shaders[1];
             }
-            success = shader->createShader(NULL, NULL);
+            success = shader->createShader();
             llassert(success);
 
             // End Hack
@@ -1647,7 +1763,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredAvatarEyesProgram.mFeatures.calculatesAtmospherics = true;
         gDeferredAvatarEyesProgram.mFeatures.hasGamma = true;
         gDeferredAvatarEyesProgram.mFeatures.hasAtmospherics = true;
-        gDeferredAvatarEyesProgram.mFeatures.disableTextureIndex = true;
         gDeferredAvatarEyesProgram.mFeatures.hasSrgb = true;
         gDeferredAvatarEyesProgram.mFeatures.hasShadows = true;
 
@@ -1655,7 +1770,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredAvatarEyesProgram.mShaderFiles.push_back(make_pair("deferred/avatarEyesV.glsl", GL_VERTEX_SHADER));
         gDeferredAvatarEyesProgram.mShaderFiles.push_back(make_pair("deferred/diffuseF.glsl", GL_FRAGMENT_SHADER));
         gDeferredAvatarEyesProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredAvatarEyesProgram.createShader(NULL, NULL);
+        success = gDeferredAvatarEyesProgram.createShader();
         llassert(success);
     }
 
@@ -1672,7 +1787,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredFullbrightProgram.mShaderFiles.push_back(make_pair("deferred/fullbrightF.glsl", GL_FRAGMENT_SHADER));
         gDeferredFullbrightProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         success = make_rigged_variant(gDeferredFullbrightProgram, gDeferredSkinnedFullbrightProgram);
-        success = gDeferredFullbrightProgram.createShader(NULL, NULL);
+        success = gDeferredFullbrightProgram.createShader();
         llassert(success);
     }
 
@@ -1690,7 +1805,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gHUDFullbrightProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gHUDFullbrightProgram.clearPermutations();
         gHUDFullbrightProgram.addPermutation("IS_HUD", "1");
-        success = gHUDFullbrightProgram.createShader(NULL, NULL);
+        success = gHUDFullbrightProgram.createShader();
         llassert(success);
     }
 
@@ -1709,7 +1824,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredFullbrightAlphaMaskProgram.addPermutation("HAS_ALPHA_MASK","1");
         gDeferredFullbrightAlphaMaskProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         success = make_rigged_variant(gDeferredFullbrightAlphaMaskProgram, gDeferredSkinnedFullbrightAlphaMaskProgram);
-        success = success && gDeferredFullbrightAlphaMaskProgram.createShader(NULL, NULL);
+        success = success && gDeferredFullbrightAlphaMaskProgram.createShader();
         llassert(success);
     }
 
@@ -1728,7 +1843,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gHUDFullbrightAlphaMaskProgram.addPermutation("HAS_ALPHA_MASK", "1");
         gHUDFullbrightAlphaMaskProgram.addPermutation("IS_HUD", "1");
         gHUDFullbrightAlphaMaskProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gHUDFullbrightAlphaMaskProgram.createShader(NULL, NULL);
+        success = gHUDFullbrightAlphaMaskProgram.createShader();
         llassert(success);
     }
 
@@ -1749,7 +1864,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredFullbrightAlphaMaskAlphaProgram.addPermutation("IS_ALPHA", "1");
         gDeferredFullbrightAlphaMaskAlphaProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         success = make_rigged_variant(gDeferredFullbrightAlphaMaskAlphaProgram, gDeferredSkinnedFullbrightAlphaMaskAlphaProgram);
-        success = success && gDeferredFullbrightAlphaMaskAlphaProgram.createShader(NULL, NULL);
+        success = success && gDeferredFullbrightAlphaMaskAlphaProgram.createShader();
         llassert(success);
     }
 
@@ -1770,7 +1885,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gHUDFullbrightAlphaMaskAlphaProgram.addPermutation("IS_ALPHA", "1");
         gHUDFullbrightAlphaMaskAlphaProgram.addPermutation("IS_HUD", "1");
         gHUDFullbrightAlphaMaskAlphaProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = success && gHUDFullbrightAlphaMaskAlphaProgram.createShader(NULL, NULL);
+        success = success && gHUDFullbrightAlphaMaskAlphaProgram.createShader();
         llassert(success);
     }
 
@@ -1788,7 +1903,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredFullbrightShinyProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gDeferredFullbrightShinyProgram.mFeatures.hasReflectionProbes = true;
         success = make_rigged_variant(gDeferredFullbrightShinyProgram, gDeferredSkinnedFullbrightShinyProgram);
-        success = success && gDeferredFullbrightShinyProgram.createShader(NULL, NULL);
+        success = success && gDeferredFullbrightShinyProgram.createShader();
         llassert(success);
     }
 
@@ -1807,7 +1922,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gHUDFullbrightShinyProgram.mFeatures.hasReflectionProbes = true;
         gHUDFullbrightShinyProgram.clearPermutations();
         gHUDFullbrightShinyProgram.addPermutation("IS_HUD", "1");
-        success = gHUDFullbrightShinyProgram.createShader(NULL, NULL);
+        success = gHUDFullbrightShinyProgram.createShader();
         llassert(success);
     }
 
@@ -1823,7 +1938,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredEmissiveProgram.mShaderFiles.push_back(make_pair("deferred/emissiveF.glsl", GL_FRAGMENT_SHADER));
         gDeferredEmissiveProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         success = make_rigged_variant(gDeferredEmissiveProgram, gDeferredSkinnedEmissiveProgram);
-        success = success && gDeferredEmissiveProgram.createShader(NULL, NULL);
+        success = success && gDeferredEmissiveProgram.createShader();
         llassert(success);
     }
 
@@ -1856,7 +1971,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
             gDeferredSoftenProgram.addPermutation("HAS_SSAO", "1");
         }
 
-        success = gDeferredSoftenProgram.createShader(NULL, NULL);
+        success = gDeferredSoftenProgram.createShader();
         llassert(success);
     }
 
@@ -1878,7 +1993,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
         gHazeProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
 
-        success = gHazeProgram.createShader(NULL, NULL);
+        success = gHazeProgram.createShader();
         llassert(success);
     }
 
@@ -1902,7 +2017,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
         gHazeWaterProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
 
-        success = gHazeWaterProgram.createShader(NULL, NULL);
+        success = gHazeWaterProgram.createShader();
         llassert(success);
     }
 
@@ -1915,7 +2030,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredShadowProgram.mShaderFiles.push_back(make_pair("deferred/shadowF.glsl", GL_FRAGMENT_SHADER));
         gDeferredShadowProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gDeferredShadowProgram.mRiggedVariant = &gDeferredSkinnedShadowProgram;
-        success = gDeferredShadowProgram.createShader(NULL, NULL);
+        success = gDeferredShadowProgram.createShader();
         llassert(success);
     }
 
@@ -1930,7 +2045,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredSkinnedShadowProgram.mShaderFiles.push_back(make_pair("deferred/shadowF.glsl", GL_FRAGMENT_SHADER));
         gDeferredSkinnedShadowProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         // gDeferredSkinnedShadowProgram.addPermutation("DEPTH_CLAMP", "1"); // disable depth clamp for now
-        success = gDeferredSkinnedShadowProgram.createShader(NULL, NULL);
+        success = gDeferredSkinnedShadowProgram.createShader();
         llassert(success);
     }
 
@@ -1944,7 +2059,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredShadowCubeProgram.mShaderFiles.push_back(make_pair("deferred/shadowF.glsl", GL_FRAGMENT_SHADER));
         // gDeferredShadowCubeProgram.addPermutation("DEPTH_CLAMP", "1");
         gDeferredShadowCubeProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredShadowCubeProgram.createShader(NULL, NULL);
+        success = gDeferredShadowCubeProgram.createShader();
         llassert(success);
     }
 
@@ -1962,7 +2077,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredShadowFullbrightAlphaMaskProgram.addPermutation("IS_FULLBRIGHT", "1");
         gDeferredShadowFullbrightAlphaMaskProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         success = make_rigged_variant(gDeferredShadowFullbrightAlphaMaskProgram, gDeferredSkinnedShadowFullbrightAlphaMaskProgram);
-        success = success && gDeferredShadowFullbrightAlphaMaskProgram.createShader(NULL, NULL);
+        success = success && gDeferredShadowFullbrightAlphaMaskProgram.createShader();
         llassert(success);
     }
 
@@ -1976,7 +2091,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredShadowAlphaMaskProgram.mShaderFiles.push_back(make_pair("deferred/shadowAlphaMaskF.glsl", GL_FRAGMENT_SHADER));
         gDeferredShadowAlphaMaskProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         success = make_rigged_variant(gDeferredShadowAlphaMaskProgram, gDeferredSkinnedShadowAlphaMaskProgram);
-        success = success && gDeferredShadowAlphaMaskProgram.createShader(NULL, NULL);
+        success = success && gDeferredShadowAlphaMaskProgram.createShader();
         llassert(success);
     }
 
@@ -1990,7 +2105,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredShadowGLTFAlphaMaskProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gDeferredShadowGLTFAlphaMaskProgram.clearPermutations();
         success = make_rigged_variant(gDeferredShadowGLTFAlphaMaskProgram, gDeferredSkinnedShadowGLTFAlphaMaskProgram);
-        success = success && gDeferredShadowGLTFAlphaMaskProgram.createShader(NULL, NULL);
+        success = success && gDeferredShadowGLTFAlphaMaskProgram.createShader();
         llassert(success);
     }
 
@@ -2003,7 +2118,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredShadowGLTFAlphaBlendProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gDeferredShadowGLTFAlphaBlendProgram.clearPermutations();
         success = make_rigged_variant(gDeferredShadowGLTFAlphaBlendProgram, gDeferredSkinnedShadowGLTFAlphaBlendProgram);
-        success = success && gDeferredShadowGLTFAlphaBlendProgram.createShader(NULL, NULL);
+        success = success && gDeferredShadowGLTFAlphaBlendProgram.createShader();
         llassert(success);
     }
 
@@ -2016,7 +2131,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredAvatarShadowProgram.mShaderFiles.push_back(make_pair("deferred/avatarShadowV.glsl", GL_VERTEX_SHADER));
         gDeferredAvatarShadowProgram.mShaderFiles.push_back(make_pair("deferred/avatarShadowF.glsl", GL_FRAGMENT_SHADER));
         gDeferredAvatarShadowProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredAvatarShadowProgram.createShader(NULL, NULL);
+        success = gDeferredAvatarShadowProgram.createShader();
         llassert(success);
     }
 
@@ -2028,7 +2143,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredAvatarAlphaShadowProgram.mShaderFiles.push_back(make_pair("deferred/avatarAlphaShadowV.glsl", GL_VERTEX_SHADER));
         gDeferredAvatarAlphaShadowProgram.mShaderFiles.push_back(make_pair("deferred/avatarAlphaShadowF.glsl", GL_FRAGMENT_SHADER));
         gDeferredAvatarAlphaShadowProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredAvatarAlphaShadowProgram.createShader(NULL, NULL);
+        success = gDeferredAvatarAlphaShadowProgram.createShader();
         llassert(success);
     }
     if (success)
@@ -2039,7 +2154,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredAvatarAlphaMaskShadowProgram.mShaderFiles.push_back(make_pair("deferred/avatarAlphaShadowV.glsl", GL_VERTEX_SHADER));
         gDeferredAvatarAlphaMaskShadowProgram.mShaderFiles.push_back(make_pair("deferred/avatarAlphaMaskShadowF.glsl", GL_FRAGMENT_SHADER));
         gDeferredAvatarAlphaMaskShadowProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredAvatarAlphaMaskShadowProgram.createShader(NULL, NULL);
+        success = gDeferredAvatarAlphaMaskShadowProgram.createShader();
         llassert(success);
     }
 
@@ -2048,7 +2163,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredTerrainProgram.mName = "Deferred Terrain Shader";
         gDeferredTerrainProgram.mFeatures.hasSrgb = true;
         gDeferredTerrainProgram.mFeatures.isAlphaLighting = true;
-        gDeferredTerrainProgram.mFeatures.disableTextureIndex = true; //hack to disable auto-setup of texture channels
         gDeferredTerrainProgram.mFeatures.calculatesAtmospherics = true;
         gDeferredTerrainProgram.mFeatures.hasAtmospherics = true;
         gDeferredTerrainProgram.mFeatures.hasGamma = true;
@@ -2057,7 +2171,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredTerrainProgram.mShaderFiles.push_back(make_pair("deferred/terrainV.glsl", GL_VERTEX_SHADER));
         gDeferredTerrainProgram.mShaderFiles.push_back(make_pair("deferred/terrainF.glsl", GL_FRAGMENT_SHADER));
         gDeferredTerrainProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredTerrainProgram.createShader(NULL, NULL);
+        success = gDeferredTerrainProgram.createShader();
         llassert(success);
     }
 
@@ -2069,7 +2183,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredAvatarProgram.mShaderFiles.push_back(make_pair("deferred/avatarV.glsl", GL_VERTEX_SHADER));
         gDeferredAvatarProgram.mShaderFiles.push_back(make_pair("deferred/avatarF.glsl", GL_FRAGMENT_SHADER));
         gDeferredAvatarProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredAvatarProgram.createShader(NULL, NULL);
+        success = gDeferredAvatarProgram.createShader();
         llassert(success);
     }
 
@@ -2080,7 +2194,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredAvatarAlphaProgram.mFeatures.calculatesLighting = false;
         gDeferredAvatarAlphaProgram.mFeatures.hasLighting = false;
         gDeferredAvatarAlphaProgram.mFeatures.isAlphaLighting = true;
-        gDeferredAvatarAlphaProgram.mFeatures.disableTextureIndex = true;
         gDeferredAvatarAlphaProgram.mFeatures.hasSrgb = true;
         gDeferredAvatarAlphaProgram.mFeatures.calculatesAtmospherics = true;
         gDeferredAvatarAlphaProgram.mFeatures.hasAtmospherics = true;
@@ -2103,7 +2216,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
         gDeferredAvatarAlphaProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
 
-        success = gDeferredAvatarAlphaProgram.createShader(NULL, NULL);
+        success = gDeferredAvatarAlphaProgram.createShader();
         llassert(success);
 
         gDeferredAvatarAlphaProgram.mFeatures.calculatesLighting = true;
@@ -2121,7 +2234,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gExposureProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER));
         gExposureProgram.mShaderFiles.push_back(make_pair("deferred/exposureF.glsl", GL_FRAGMENT_SHADER));
         gExposureProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gExposureProgram.createShader(NULL, NULL);
+        success = gExposureProgram.createShader();
         llassert(success);
     }
 
@@ -2135,7 +2248,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gExposureProgramNoFade.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER));
         gExposureProgramNoFade.mShaderFiles.push_back(make_pair("deferred/exposureF.glsl", GL_FRAGMENT_SHADER));
         gExposureProgramNoFade.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gExposureProgramNoFade.createShader(NULL, NULL);
+        success = gExposureProgramNoFade.createShader();
         llassert(success);
     }
 
@@ -2147,7 +2260,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gLuminanceProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER));
         gLuminanceProgram.mShaderFiles.push_back(make_pair("deferred/luminanceF.glsl", GL_FRAGMENT_SHADER));
         gLuminanceProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gLuminanceProgram.createShader(NULL, NULL);
+        success = gLuminanceProgram.createShader();
         llassert(success);
     }
 
@@ -2161,7 +2274,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredPostGammaCorrectProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER));
         gDeferredPostGammaCorrectProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredGammaCorrect.glsl", GL_FRAGMENT_SHADER));
         gDeferredPostGammaCorrectProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredPostGammaCorrectProgram.createShader(NULL, NULL);
+        success = gDeferredPostGammaCorrectProgram.createShader();
         llassert(success);
     }
 
@@ -2176,7 +2289,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gNoPostGammaCorrectProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER));
         gNoPostGammaCorrectProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredGammaCorrect.glsl", GL_FRAGMENT_SHADER));
         gNoPostGammaCorrectProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gNoPostGammaCorrectProgram.createShader(NULL, NULL);
+        success = gNoPostGammaCorrectProgram.createShader();
         llassert(success);
     }
 
@@ -2191,7 +2304,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gLegacyPostGammaCorrectProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER));
         gLegacyPostGammaCorrectProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredGammaCorrect.glsl", GL_FRAGMENT_SHADER));
         gLegacyPostGammaCorrectProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gLegacyPostGammaCorrectProgram.createShader(NULL, NULL);
+        success = gLegacyPostGammaCorrectProgram.createShader();
         llassert(success);
     }
 
@@ -2204,7 +2317,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gFXAAProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredV.glsl", GL_VERTEX_SHADER));
         gFXAAProgram.mShaderFiles.push_back(make_pair("deferred/fxaaF.glsl", GL_FRAGMENT_SHADER));
         gFXAAProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gFXAAProgram.createShader(NULL, NULL);
+        success = gFXAAProgram.createShader();
         llassert(success);
     }
 
@@ -2216,7 +2329,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredPostProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER));
         gDeferredPostProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredF.glsl", GL_FRAGMENT_SHADER));
         gDeferredPostProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredPostProgram.createShader(NULL, NULL);
+        success = gDeferredPostProgram.createShader();
         llassert(success);
     }
 
@@ -2228,7 +2341,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredCoFProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER));
         gDeferredCoFProgram.mShaderFiles.push_back(make_pair("deferred/cofF.glsl", GL_FRAGMENT_SHADER));
         gDeferredCoFProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredCoFProgram.createShader(NULL, NULL);
+        success = gDeferredCoFProgram.createShader();
         llassert(success);
     }
 
@@ -2240,7 +2353,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredDoFCombineProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER));
         gDeferredDoFCombineProgram.mShaderFiles.push_back(make_pair("deferred/dofCombineF.glsl", GL_FRAGMENT_SHADER));
         gDeferredDoFCombineProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredDoFCombineProgram.createShader(NULL, NULL);
+        success = gDeferredDoFCombineProgram.createShader();
         llassert(success);
     }
 
@@ -2252,7 +2365,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredPostNoDoFProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER));
         gDeferredPostNoDoFProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoDoFF.glsl", GL_FRAGMENT_SHADER));
         gDeferredPostNoDoFProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredPostNoDoFProgram.createShader(NULL, NULL);
+        success = gDeferredPostNoDoFProgram.createShader();
         llassert(success);
     }
 
@@ -2272,7 +2385,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gEnvironmentMapProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gEnvironmentMapProgram.mShaderGroup = LLGLSLShader::SG_SKY;
 
-        success = gEnvironmentMapProgram.createShader(NULL, NULL);
+        success = gEnvironmentMapProgram.createShader();
         llassert(success);
     }
 
@@ -2290,7 +2403,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredWLSkyProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gDeferredWLSkyProgram.mShaderGroup = LLGLSLShader::SG_SKY;
 
-        success = gDeferredWLSkyProgram.createShader(NULL, NULL);
+        success = gDeferredWLSkyProgram.createShader();
         llassert(success);
     }
 
@@ -2308,7 +2421,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredWLCloudProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gDeferredWLCloudProgram.mShaderGroup = LLGLSLShader::SG_SKY;
         gDeferredWLCloudProgram.addConstant( LLGLSLShader::SHADER_CONST_CLOUD_MOON_DEPTH ); // SL-14113
-        success = gDeferredWLCloudProgram.createShader(NULL, NULL);
+        success = gDeferredWLCloudProgram.createShader();
         llassert(success);
     }
 
@@ -2319,14 +2432,13 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredWLSunProgram.mFeatures.hasAtmospherics = true;
         gDeferredWLSunProgram.mFeatures.hasGamma = true;
         gDeferredWLSunProgram.mFeatures.hasAtmospherics = true;
-        gDeferredWLSunProgram.mFeatures.disableTextureIndex = true;
         gDeferredWLSunProgram.mFeatures.hasSrgb = true;
         gDeferredWLSunProgram.mShaderFiles.clear();
         gDeferredWLSunProgram.mShaderFiles.push_back(make_pair("deferred/sunDiscV.glsl", GL_VERTEX_SHADER));
         gDeferredWLSunProgram.mShaderFiles.push_back(make_pair("deferred/sunDiscF.glsl", GL_FRAGMENT_SHADER));
         gDeferredWLSunProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gDeferredWLSunProgram.mShaderGroup = LLGLSLShader::SG_SKY;
-        success = gDeferredWLSunProgram.createShader(NULL, NULL);
+        success = gDeferredWLSunProgram.createShader();
         llassert(success);
     }
 
@@ -2338,7 +2450,6 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredWLMoonProgram.mFeatures.hasGamma = true;
         gDeferredWLMoonProgram.mFeatures.hasAtmospherics = true;
         gDeferredWLMoonProgram.mFeatures.hasSrgb = true;
-        gDeferredWLMoonProgram.mFeatures.disableTextureIndex = true;
 
         gDeferredWLMoonProgram.mShaderFiles.clear();
         gDeferredWLMoonProgram.mShaderFiles.push_back(make_pair("deferred/moonV.glsl", GL_VERTEX_SHADER));
@@ -2346,7 +2457,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredWLMoonProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gDeferredWLMoonProgram.mShaderGroup = LLGLSLShader::SG_SKY;
         gDeferredWLMoonProgram.addConstant( LLGLSLShader::SHADER_CONST_CLOUD_MOON_DEPTH ); // SL-14113
-        success = gDeferredWLMoonProgram.createShader(NULL, NULL);
+        success = gDeferredWLMoonProgram.createShader();
         llassert(success);
     }
 
@@ -2359,7 +2470,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredStarProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gDeferredStarProgram.mShaderGroup = LLGLSLShader::SG_SKY;
         gDeferredStarProgram.addConstant( LLGLSLShader::SHADER_CONST_STAR_DEPTH ); // SL-14113
-        success = gDeferredStarProgram.createShader(NULL, NULL);
+        success = gDeferredStarProgram.createShader();
         llassert(success);
     }
 
@@ -2371,7 +2482,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gNormalMapGenProgram.mShaderFiles.push_back(make_pair("deferred/normgenF.glsl", GL_FRAGMENT_SHADER));
         gNormalMapGenProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
         gNormalMapGenProgram.mShaderGroup = LLGLSLShader::SG_SKY;
-        success = gNormalMapGenProgram.createShader(NULL, NULL);
+        success = gNormalMapGenProgram.createShader();
     }
 
     if (success)
@@ -2381,7 +2492,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredGenBrdfLutProgram.mShaderFiles.push_back(make_pair("deferred/genbrdflutV.glsl", GL_VERTEX_SHADER));
         gDeferredGenBrdfLutProgram.mShaderFiles.push_back(make_pair("deferred/genbrdflutF.glsl", GL_FRAGMENT_SHADER));
         gDeferredGenBrdfLutProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredGenBrdfLutProgram.createShader(NULL, NULL);
+        success = gDeferredGenBrdfLutProgram.createShader();
     }
 
     if (success) {
@@ -2392,7 +2503,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gPostScreenSpaceReflectionProgram.mFeatures.hasScreenSpaceReflections = true;
         gPostScreenSpaceReflectionProgram.mFeatures.isDeferred                = true;
         gPostScreenSpaceReflectionProgram.mShaderLevel = 3;
-        success = gPostScreenSpaceReflectionProgram.createShader(NULL, NULL);
+        success = gPostScreenSpaceReflectionProgram.createShader();
     }
 
     if (success) {
@@ -2401,16 +2512,16 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
         gDeferredBufferVisualProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredNoTCV.glsl", GL_VERTEX_SHADER));
         gDeferredBufferVisualProgram.mShaderFiles.push_back(make_pair("deferred/postDeferredVisualizeBuffers.glsl", GL_FRAGMENT_SHADER));
         gDeferredBufferVisualProgram.mShaderLevel = mShaderLevel[SHADER_DEFERRED];
-        success = gDeferredBufferVisualProgram.createShader(NULL, NULL);
+        success = gDeferredBufferVisualProgram.createShader();
     }
 
     return success;
 }
 
-BOOL LLViewerShaderMgr::loadShadersObject()
+bool LLViewerShaderMgr::loadShadersObject()
 {
     LL_PROFILE_ZONE_SCOPED;
-    BOOL success = TRUE;
+    bool success = true;
 
     if (success)
     {
@@ -2420,7 +2531,7 @@ BOOL LLViewerShaderMgr::loadShadersObject()
         gObjectBumpProgram.mShaderFiles.push_back(make_pair("objects/bumpF.glsl", GL_FRAGMENT_SHADER));
         gObjectBumpProgram.mShaderLevel = mShaderLevel[SHADER_OBJECT];
         success = make_rigged_variant(gObjectBumpProgram, gSkinnedObjectBumpProgram);
-        success = success && gObjectBumpProgram.createShader(NULL, NULL);
+        success = success && gObjectBumpProgram.createShader();
         if (success)
         { //lldrawpoolbump assumes "texture0" has channel 0 and "texture1" has channel 1
             LLGLSLShader* shader[] = { &gObjectBumpProgram, &gSkinnedObjectBumpProgram };
@@ -2442,37 +2553,34 @@ BOOL LLViewerShaderMgr::loadShadersObject()
         gObjectAlphaMaskNoColorProgram.mFeatures.hasGamma = true;
         gObjectAlphaMaskNoColorProgram.mFeatures.hasAtmospherics = true;
         gObjectAlphaMaskNoColorProgram.mFeatures.hasLighting = true;
-        gObjectAlphaMaskNoColorProgram.mFeatures.disableTextureIndex = true;
         gObjectAlphaMaskNoColorProgram.mFeatures.hasAlphaMask = true;
         gObjectAlphaMaskNoColorProgram.mShaderFiles.clear();
         gObjectAlphaMaskNoColorProgram.mShaderFiles.push_back(make_pair("objects/simpleNoColorV.glsl", GL_VERTEX_SHADER));
         gObjectAlphaMaskNoColorProgram.mShaderFiles.push_back(make_pair("objects/simpleF.glsl", GL_FRAGMENT_SHADER));
         gObjectAlphaMaskNoColorProgram.mShaderLevel = mShaderLevel[SHADER_OBJECT];
-        success = gObjectAlphaMaskNoColorProgram.createShader(NULL, NULL);
+        success = gObjectAlphaMaskNoColorProgram.createShader();
     }
 
     if (success)
     {
         gImpostorProgram.mName = "Impostor Shader";
-        gImpostorProgram.mFeatures.disableTextureIndex = true;
         gImpostorProgram.mFeatures.hasSrgb = true;
         gImpostorProgram.mShaderFiles.clear();
         gImpostorProgram.mShaderFiles.push_back(make_pair("objects/impostorV.glsl", GL_VERTEX_SHADER));
         gImpostorProgram.mShaderFiles.push_back(make_pair("objects/impostorF.glsl", GL_FRAGMENT_SHADER));
         gImpostorProgram.mShaderLevel = mShaderLevel[SHADER_OBJECT];
-        success = gImpostorProgram.createShader(NULL, NULL);
+        success = gImpostorProgram.createShader();
     }
 
     if (success)
     {
         gObjectPreviewProgram.mName = "Object Preview Shader";
-        gObjectPreviewProgram.mFeatures.disableTextureIndex = true;
         gObjectPreviewProgram.mShaderFiles.clear();
         gObjectPreviewProgram.mShaderFiles.push_back(make_pair("objects/previewV.glsl", GL_VERTEX_SHADER));
         gObjectPreviewProgram.mShaderFiles.push_back(make_pair("objects/previewF.glsl", GL_FRAGMENT_SHADER));
         gObjectPreviewProgram.mShaderLevel = mShaderLevel[SHADER_OBJECT];
         success = make_rigged_variant(gObjectPreviewProgram, gSkinnedObjectPreviewProgram);
-        success = gObjectPreviewProgram.createShader(NULL, NULL);
+        success = gObjectPreviewProgram.createShader();
         gObjectPreviewProgram.mFeatures.hasLighting = true;
         gSkinnedObjectPreviewProgram.mFeatures.hasLighting = true;
     }
@@ -2485,36 +2593,34 @@ BOOL LLViewerShaderMgr::loadShadersObject()
         gPhysicsPreviewProgram.mFeatures.hasGamma = false;
         gPhysicsPreviewProgram.mFeatures.hasAtmospherics = false;
         gPhysicsPreviewProgram.mFeatures.hasLighting = false;
-        gPhysicsPreviewProgram.mFeatures.mIndexedTextureChannels = 0;
-        gPhysicsPreviewProgram.mFeatures.disableTextureIndex = true;
         gPhysicsPreviewProgram.mShaderFiles.clear();
         gPhysicsPreviewProgram.mShaderFiles.push_back(make_pair("objects/previewPhysicsV.glsl", GL_VERTEX_SHADER));
         gPhysicsPreviewProgram.mShaderFiles.push_back(make_pair("objects/previewPhysicsF.glsl", GL_FRAGMENT_SHADER));
         gPhysicsPreviewProgram.mShaderLevel = mShaderLevel[SHADER_OBJECT];
-        success = gPhysicsPreviewProgram.createShader(NULL, NULL);
+        success = gPhysicsPreviewProgram.createShader();
         gPhysicsPreviewProgram.mFeatures.hasLighting = false;
     }
 
     if (!success)
     {
         mShaderLevel[SHADER_OBJECT] = 0;
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
-BOOL LLViewerShaderMgr::loadShadersAvatar()
+bool LLViewerShaderMgr::loadShadersAvatar()
 {
     LL_PROFILE_ZONE_SCOPED;
 #if 1 // DEPRECATED -- forward rendering is deprecated
-    BOOL success = TRUE;
+    bool success = true;
 
     if (mShaderLevel[SHADER_AVATAR] == 0)
     {
         gAvatarProgram.unload();
         gAvatarEyeballProgram.unload();
-        return TRUE;
+        return true;
     }
 
     if (success)
@@ -2527,12 +2633,11 @@ BOOL LLViewerShaderMgr::loadShadersAvatar()
         gAvatarProgram.mFeatures.hasAtmospherics = true;
         gAvatarProgram.mFeatures.hasLighting = true;
         gAvatarProgram.mFeatures.hasAlphaMask = true;
-        gAvatarProgram.mFeatures.disableTextureIndex = true;
         gAvatarProgram.mShaderFiles.clear();
         gAvatarProgram.mShaderFiles.push_back(make_pair("avatar/avatarV.glsl", GL_VERTEX_SHADER));
         gAvatarProgram.mShaderFiles.push_back(make_pair("avatar/avatarF.glsl", GL_FRAGMENT_SHADER));
         gAvatarProgram.mShaderLevel = mShaderLevel[SHADER_AVATAR];
-        success = gAvatarProgram.createShader(NULL, NULL);
+        success = gAvatarProgram.createShader();
 
         /// Keep track of avatar levels
         if (gAvatarProgram.mShaderLevel != mShaderLevel[SHADER_AVATAR])
@@ -2551,28 +2656,27 @@ BOOL LLViewerShaderMgr::loadShadersAvatar()
         gAvatarEyeballProgram.mFeatures.hasAtmospherics = true;
         gAvatarEyeballProgram.mFeatures.hasLighting = true;
         gAvatarEyeballProgram.mFeatures.hasAlphaMask = true;
-        gAvatarEyeballProgram.mFeatures.disableTextureIndex = true;
         gAvatarEyeballProgram.mShaderFiles.clear();
         gAvatarEyeballProgram.mShaderFiles.push_back(make_pair("avatar/eyeballV.glsl", GL_VERTEX_SHADER));
         gAvatarEyeballProgram.mShaderFiles.push_back(make_pair("avatar/eyeballF.glsl", GL_FRAGMENT_SHADER));
         gAvatarEyeballProgram.mShaderLevel = mShaderLevel[SHADER_AVATAR];
-        success = gAvatarEyeballProgram.createShader(NULL, NULL);
+        success = gAvatarEyeballProgram.createShader();
     }
 
     if( !success )
     {
         mShaderLevel[SHADER_AVATAR] = 0;
         mMaxAvatarShaderLevel = 0;
-        return FALSE;
+        return false;
     }
 #endif
-    return TRUE;
+    return true;
 }
 
-BOOL LLViewerShaderMgr::loadShadersInterface()
+bool LLViewerShaderMgr::loadShadersInterface()
 {
     LL_PROFILE_ZONE_SCOPED;
-    BOOL success = TRUE;
+    bool success = true;
 
     if (success)
     {
@@ -2582,7 +2686,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gHighlightProgram.mShaderFiles.push_back(make_pair("interface/highlightF.glsl", GL_FRAGMENT_SHADER));
         gHighlightProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
         success = make_rigged_variant(gHighlightProgram, gSkinnedHighlightProgram);
-        success = success && gHighlightProgram.createShader(NULL, NULL);
+        success = success && gHighlightProgram.createShader();
     }
 
     if (success)
@@ -2592,7 +2696,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gHighlightNormalProgram.mShaderFiles.push_back(make_pair("interface/highlightNormV.glsl", GL_VERTEX_SHADER));
         gHighlightNormalProgram.mShaderFiles.push_back(make_pair("interface/highlightF.glsl", GL_FRAGMENT_SHADER));
         gHighlightNormalProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gHighlightNormalProgram.createShader(NULL, NULL);
+        success = gHighlightNormalProgram.createShader();
     }
 
     if (success)
@@ -2602,7 +2706,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gHighlightSpecularProgram.mShaderFiles.push_back(make_pair("interface/highlightSpecV.glsl", GL_VERTEX_SHADER));
         gHighlightSpecularProgram.mShaderFiles.push_back(make_pair("interface/highlightF.glsl", GL_FRAGMENT_SHADER));
         gHighlightSpecularProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gHighlightSpecularProgram.createShader(NULL, NULL);
+        success = gHighlightSpecularProgram.createShader();
     }
 
     if (success)
@@ -2612,7 +2716,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gUIProgram.mShaderFiles.push_back(make_pair("interface/uiV.glsl", GL_VERTEX_SHADER));
         gUIProgram.mShaderFiles.push_back(make_pair("interface/uiF.glsl", GL_FRAGMENT_SHADER));
         gUIProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gUIProgram.createShader(NULL, NULL);
+        success = gUIProgram.createShader();
     }
 
     if (success)
@@ -2622,7 +2726,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gPathfindingProgram.mShaderFiles.push_back(make_pair("interface/pathfindingV.glsl", GL_VERTEX_SHADER));
         gPathfindingProgram.mShaderFiles.push_back(make_pair("interface/pathfindingF.glsl", GL_FRAGMENT_SHADER));
         gPathfindingProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gPathfindingProgram.createShader(NULL, NULL);
+        success = gPathfindingProgram.createShader();
     }
 
     if (success)
@@ -2632,7 +2736,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gPathfindingNoNormalsProgram.mShaderFiles.push_back(make_pair("interface/pathfindingNoNormalV.glsl", GL_VERTEX_SHADER));
         gPathfindingNoNormalsProgram.mShaderFiles.push_back(make_pair("interface/pathfindingF.glsl", GL_FRAGMENT_SHADER));
         gPathfindingNoNormalsProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gPathfindingNoNormalsProgram.createShader(NULL, NULL);
+        success = gPathfindingNoNormalsProgram.createShader();
     }
 
     if (success)
@@ -2642,7 +2746,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gGlowCombineProgram.mShaderFiles.push_back(make_pair("interface/glowcombineV.glsl", GL_VERTEX_SHADER));
         gGlowCombineProgram.mShaderFiles.push_back(make_pair("interface/glowcombineF.glsl", GL_FRAGMENT_SHADER));
         gGlowCombineProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gGlowCombineProgram.createShader(NULL, NULL);
+        success = gGlowCombineProgram.createShader();
         if (success)
         {
             gGlowCombineProgram.bind();
@@ -2659,7 +2763,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gGlowCombineFXAAProgram.mShaderFiles.push_back(make_pair("interface/glowcombineFXAAV.glsl", GL_VERTEX_SHADER));
         gGlowCombineFXAAProgram.mShaderFiles.push_back(make_pair("interface/glowcombineFXAAF.glsl", GL_FRAGMENT_SHADER));
         gGlowCombineFXAAProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gGlowCombineFXAAProgram.createShader(NULL, NULL);
+        success = gGlowCombineFXAAProgram.createShader();
         if (success)
         {
             gGlowCombineFXAAProgram.bind();
@@ -2677,7 +2781,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gTwoTextureCompareProgram.mShaderFiles.push_back(make_pair("interface/twotexturecompareV.glsl", GL_VERTEX_SHADER));
         gTwoTextureCompareProgram.mShaderFiles.push_back(make_pair("interface/twotexturecompareF.glsl", GL_FRAGMENT_SHADER));
         gTwoTextureCompareProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gTwoTextureCompareProgram.createShader(NULL, NULL);
+        success = gTwoTextureCompareProgram.createShader();
         if (success)
         {
             gTwoTextureCompareProgram.bind();
@@ -2694,7 +2798,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gOneTextureFilterProgram.mShaderFiles.push_back(make_pair("interface/onetexturefilterV.glsl", GL_VERTEX_SHADER));
         gOneTextureFilterProgram.mShaderFiles.push_back(make_pair("interface/onetexturefilterF.glsl", GL_FRAGMENT_SHADER));
         gOneTextureFilterProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gOneTextureFilterProgram.createShader(NULL, NULL);
+        success = gOneTextureFilterProgram.createShader();
         if (success)
         {
             gOneTextureFilterProgram.bind();
@@ -2710,7 +2814,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gSolidColorProgram.mShaderFiles.push_back(make_pair("interface/solidcolorV.glsl", GL_VERTEX_SHADER));
         gSolidColorProgram.mShaderFiles.push_back(make_pair("interface/solidcolorF.glsl", GL_FRAGMENT_SHADER));
         gSolidColorProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gSolidColorProgram.createShader(NULL, NULL);
+        success = gSolidColorProgram.createShader();
         if (success)
         {
             gSolidColorProgram.bind();
@@ -2727,7 +2831,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gOcclusionProgram.mShaderFiles.push_back(make_pair("interface/occlusionF.glsl", GL_FRAGMENT_SHADER));
         gOcclusionProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
         gOcclusionProgram.mRiggedVariant = &gSkinnedOcclusionProgram;
-        success = gOcclusionProgram.createShader(NULL, NULL);
+        success = gOcclusionProgram.createShader();
     }
 
     if (success)
@@ -2738,7 +2842,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gSkinnedOcclusionProgram.mShaderFiles.push_back(make_pair("interface/occlusionSkinnedV.glsl", GL_VERTEX_SHADER));
         gSkinnedOcclusionProgram.mShaderFiles.push_back(make_pair("interface/occlusionF.glsl", GL_FRAGMENT_SHADER));
         gSkinnedOcclusionProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gSkinnedOcclusionProgram.createShader(NULL, NULL);
+        success = gSkinnedOcclusionProgram.createShader();
     }
 
     if (success)
@@ -2748,7 +2852,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gOcclusionCubeProgram.mShaderFiles.push_back(make_pair("interface/occlusionCubeV.glsl", GL_VERTEX_SHADER));
         gOcclusionCubeProgram.mShaderFiles.push_back(make_pair("interface/occlusionF.glsl", GL_FRAGMENT_SHADER));
         gOcclusionCubeProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gOcclusionCubeProgram.createShader(NULL, NULL);
+        success = gOcclusionCubeProgram.createShader();
     }
 
     if (success)
@@ -2760,7 +2864,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gDebugProgram.mRiggedVariant = &gSkinnedDebugProgram;
         gDebugProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
         success = make_rigged_variant(gDebugProgram, gSkinnedDebugProgram);
-        success = success && gDebugProgram.createShader(NULL, NULL);
+        success = success && gDebugProgram.createShader();
     }
 
     if (success)
@@ -2786,7 +2890,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
                 shader.addPermutation("HAS_ATTRIBUTE_TANGENT", "1");
             }
             success = make_rigged_variant(shader, skinned_shader);
-            success = success && shader.createShader(NULL, NULL);
+            success = success && shader.createShader();
         }
     }
 
@@ -2797,7 +2901,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gClipProgram.mShaderFiles.push_back(make_pair("interface/clipV.glsl", GL_VERTEX_SHADER));
         gClipProgram.mShaderFiles.push_back(make_pair("interface/clipF.glsl", GL_FRAGMENT_SHADER));
         gClipProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gClipProgram.createShader(NULL, NULL);
+        success = gClipProgram.createShader();
     }
 
     if (success)
@@ -2807,7 +2911,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gBenchmarkProgram.mShaderFiles.push_back(make_pair("interface/benchmarkV.glsl", GL_VERTEX_SHADER));
         gBenchmarkProgram.mShaderFiles.push_back(make_pair("interface/benchmarkF.glsl", GL_FRAGMENT_SHADER));
         gBenchmarkProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gBenchmarkProgram.createShader(NULL, NULL);
+        success = gBenchmarkProgram.createShader();
     }
 
     if (success)
@@ -2823,7 +2927,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gReflectionProbeDisplayProgram.mShaderFiles.push_back(make_pair("interface/reflectionprobeV.glsl", GL_VERTEX_SHADER));
         gReflectionProbeDisplayProgram.mShaderFiles.push_back(make_pair("interface/reflectionprobeF.glsl", GL_FRAGMENT_SHADER));
         gReflectionProbeDisplayProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gReflectionProbeDisplayProgram.createShader(NULL, NULL);
+        success = gReflectionProbeDisplayProgram.createShader();
     }
 
     if (success)
@@ -2833,7 +2937,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gCopyProgram.mShaderFiles.push_back(make_pair("interface/copyV.glsl", GL_VERTEX_SHADER));
         gCopyProgram.mShaderFiles.push_back(make_pair("interface/copyF.glsl", GL_FRAGMENT_SHADER));
         gCopyProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gCopyProgram.createShader(NULL, NULL);
+        success = gCopyProgram.createShader();
     }
 
     if (success)
@@ -2845,7 +2949,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gCopyDepthProgram.clearPermutations();
         gCopyDepthProgram.addPermutation("COPY_DEPTH", "1");
         gCopyDepthProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gCopyDepthProgram.createShader(NULL, NULL);
+        success = gCopyDepthProgram.createShader();
     }
 
     if (success)
@@ -2855,7 +2959,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gAlphaMaskProgram.mShaderFiles.push_back(make_pair("interface/alphamaskV.glsl", GL_VERTEX_SHADER));
         gAlphaMaskProgram.mShaderFiles.push_back(make_pair("interface/alphamaskF.glsl", GL_FRAGMENT_SHADER));
         gAlphaMaskProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gAlphaMaskProgram.createShader(NULL, NULL);
+        success = gAlphaMaskProgram.createShader();
     }
 
     if (success)
@@ -2869,7 +2973,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gReflectionMipProgram.mShaderFiles.push_back(make_pair("interface/splattexturerectV.glsl", GL_VERTEX_SHADER));
         gReflectionMipProgram.mShaderFiles.push_back(make_pair("interface/reflectionmipF.glsl", GL_FRAGMENT_SHADER));
         gReflectionMipProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gReflectionMipProgram.createShader(NULL, NULL);
+        success = gReflectionMipProgram.createShader();
     }
 
     if (success)
@@ -2883,7 +2987,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gGaussianProgram.mShaderFiles.push_back(make_pair("interface/splattexturerectV.glsl", GL_VERTEX_SHADER));
         gGaussianProgram.mShaderFiles.push_back(make_pair("interface/gaussianF.glsl", GL_FRAGMENT_SHADER));
         gGaussianProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gGaussianProgram.createShader(NULL, NULL);
+        success = gGaussianProgram.createShader();
     }
 
     if (success && gGLManager.mHasCubeMapArray)
@@ -2894,7 +2998,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gRadianceGenProgram.mShaderFiles.push_back(make_pair("interface/radianceGenF.glsl", GL_FRAGMENT_SHADER));
         gRadianceGenProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
         gRadianceGenProgram.addPermutation("PROBE_FILTER_SAMPLES", "32");
-        success = gRadianceGenProgram.createShader(NULL, NULL);
+        success = gRadianceGenProgram.createShader();
     }
 
     if (success && gGLManager.mHasCubeMapArray)
@@ -2906,7 +3010,7 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gHeroRadianceGenProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
         gHeroRadianceGenProgram.addPermutation("HERO_PROBES", "1");
         gHeroRadianceGenProgram.addPermutation("PROBE_FILTER_SAMPLES", "4");
-        success                              = gHeroRadianceGenProgram.createShader(NULL, NULL);
+        success                              = gHeroRadianceGenProgram.createShader();
     }
 
     if (success && gGLManager.mHasCubeMapArray)
@@ -2916,16 +3020,16 @@ BOOL LLViewerShaderMgr::loadShadersInterface()
         gIrradianceGenProgram.mShaderFiles.push_back(make_pair("interface/irradianceGenV.glsl", GL_VERTEX_SHADER));
         gIrradianceGenProgram.mShaderFiles.push_back(make_pair("interface/irradianceGenF.glsl", GL_FRAGMENT_SHADER));
         gIrradianceGenProgram.mShaderLevel = mShaderLevel[SHADER_INTERFACE];
-        success = gIrradianceGenProgram.createShader(NULL, NULL);
+        success = gIrradianceGenProgram.createShader();
     }
 
     if( !success )
     {
         mShaderLevel[SHADER_INTERFACE] = 0;
-        return FALSE;
+        return false;
     }
 
-    return TRUE;
+    return true;
 }
 
 
diff --git a/indra/newview/llviewershadermgr.h b/indra/newview/llviewershadermgr.h
index dbac352b92..60ce8c430b 100644
--- a/indra/newview/llviewershadermgr.h
+++ b/indra/newview/llviewershadermgr.h
@@ -35,7 +35,7 @@
 class LLViewerShaderMgr: public LLShaderMgr
 {
 public:
-    static BOOL sInitialized;
+    static bool sInitialized;
     static bool sSkipReload;
 
     LLViewerShaderMgr();
@@ -58,12 +58,12 @@ public:
     // name of a file error happened at, otherwise
     // returns an empty string
     std::string loadBasicShaders();
-    BOOL loadShadersEffects();
-    BOOL loadShadersDeferred();
-    BOOL loadShadersObject();
-    BOOL loadShadersAvatar();
-    BOOL loadShadersWater();
-    BOOL loadShadersInterface();
+    bool loadShadersEffects();
+    bool loadShadersDeferred();
+    bool loadShadersObject();
+    bool loadShadersAvatar();
+    bool loadShadersWater();
+    bool loadShadersInterface();
 
     std::vector<S32> mShaderLevel;
     S32 mMaxAvatarShaderLevel;
@@ -287,6 +287,9 @@ extern LLGLSLShader         gDeferredPBROpaqueProgram;
 extern LLGLSLShader         gDeferredPBRAlphaProgram;
 extern LLGLSLShader         gHUDPBRAlphaProgram;
 
+// GLTF shaders
+extern LLGLSLShader         gGLTFPBRMetallicRoughnessProgram;
+
 // Encodes detail level for dropping textures, in accordance with the GLTF spec where possible
 // 0 is highest detail, -1 drops emissive, etc
 // Dropping metallic roughness is off-spec - Reserve for potato machines as needed
diff --git a/indra/newview/llviewerstats.cpp b/indra/newview/llviewerstats.cpp
index b6935aa16a..fb874f9d7f 100644
--- a/indra/newview/llviewerstats.cpp
+++ b/indra/newview/llviewerstats.cpp
@@ -337,7 +337,7 @@ void LLViewerStats::addToMessage(LLSD &body)
 {
     LLSD &misc = body["misc"];
 
-    misc["Version"] = TRUE;
+    misc["Version"] = true;
     //TODO RN: get last value, not mean
     misc["Vertex Buffers Enabled"] = getRecording().getMean(LLStatViewer::ENABLE_VBO);
 
diff --git a/indra/newview/llviewertexlayer.cpp b/indra/newview/llviewertexlayer.cpp
index e57fec45e6..10380fecee 100644
--- a/indra/newview/llviewertexlayer.cpp
+++ b/indra/newview/llviewertexlayer.cpp
@@ -52,11 +52,11 @@ LLViewerTexLayerSetBuffer::LLViewerTexLayerSetBuffer(LLTexLayerSet* const owner,
                                          S32 width, S32 height) :
     // ORDER_LAST => must render these after the hints are created.
     LLTexLayerSetBuffer(owner),
-    LLViewerDynamicTexture(width, height, 4, LLViewerDynamicTexture::ORDER_LAST, FALSE),
-    mNeedsUpdate(TRUE),
+    LLViewerDynamicTexture(width, height, 4, LLViewerDynamicTexture::ORDER_LAST, false),
+    mNeedsUpdate(true),
     mNumLowresUpdates(0)
 {
-    mGLTexturep->setNeedsAlphaAndPickMask(FALSE);
+    mGLTexturep->setNeedsAlphaAndPickMask(false);
 
     LLViewerTexLayerSetBuffer::sGLByteCount += getSize();
     mNeedsUpdateTimer.start();
@@ -99,7 +99,7 @@ void LLViewerTexLayerSetBuffer::dumpTotalByteCount()
 void LLViewerTexLayerSetBuffer::requestUpdate()
 {
     restartUpdateTimer();
-    mNeedsUpdate = TRUE;
+    mNeedsUpdate = true;
     mNumLowresUpdates = 0;
 }
 
@@ -110,30 +110,30 @@ void LLViewerTexLayerSetBuffer::restartUpdateTimer()
 }
 
 // virtual
-BOOL LLViewerTexLayerSetBuffer::needsRender()
+bool LLViewerTexLayerSetBuffer::needsRender()
 {
     llassert(mTexLayerSet->getAvatarAppearance() == gAgentAvatarp);
-    if (!isAgentAvatarValid()) return FALSE;
+    if (!isAgentAvatarValid()) return false;
 
-    const BOOL update_now = mNeedsUpdate && isReadyToUpdate();
+    const bool update_now = mNeedsUpdate && isReadyToUpdate();
 
     // Don't render if we don't want to (or aren't ready to) update.
     if (!update_now)
     {
-        return FALSE;
+        return false;
     }
 
     // Don't render if we're animating our appearance.
     if (gAgentAvatarp->getIsAppearanceAnimating())
     {
-        return FALSE;
+        return false;
     }
 
     // Don't render if we are trying to create a skirt texture but aren't wearing a skirt.
     if (gAgentAvatarp->getBakedTE(getViewerTexLayerSet()) == LLAvatarAppearanceDefines::TEX_SKIRT_BAKED &&
         !gAgentAvatarp->isWearingWearableType(LLWearableType::WT_SKIRT))
     {
-        return FALSE;
+        return false;
     }
 
     // Render if we have at least minimal level of detail for each local texture.
@@ -146,11 +146,11 @@ void LLViewerTexLayerSetBuffer::preRenderTexLayerSet()
     LLTexLayerSetBuffer::preRenderTexLayerSet();
 
     // keep depth buffer, we don't need to clear it
-    LLViewerDynamicTexture::preRender(FALSE);
+    LLViewerDynamicTexture::preRender(false);
 }
 
 // virtual
-void LLViewerTexLayerSetBuffer::postRenderTexLayerSet(BOOL success)
+void LLViewerTexLayerSetBuffer::postRenderTexLayerSet(bool success)
 {
 
     LLTexLayerSetBuffer::postRenderTexLayerSet(success);
@@ -158,9 +158,9 @@ void LLViewerTexLayerSetBuffer::postRenderTexLayerSet(BOOL success)
 }
 
 // virtual
-void LLViewerTexLayerSetBuffer::midRenderTexLayerSet(BOOL success)
+void LLViewerTexLayerSetBuffer::midRenderTexLayerSet(bool success)
 {
-    const BOOL update_now = mNeedsUpdate && isReadyToUpdate();
+    const bool update_now = mNeedsUpdate && isReadyToUpdate();
     if (update_now)
     {
         doUpdate();
@@ -171,18 +171,18 @@ void LLViewerTexLayerSetBuffer::midRenderTexLayerSet(BOOL success)
     mGLTexturep->setGLTextureCreated(true);
 }
 
-BOOL LLViewerTexLayerSetBuffer::isInitialized(void) const
+bool LLViewerTexLayerSetBuffer::isInitialized(void) const
 {
     return mGLTexturep.notNull() && mGLTexturep->isGLTextureCreated();
 }
 
-BOOL LLViewerTexLayerSetBuffer::isReadyToUpdate() const
+bool LLViewerTexLayerSetBuffer::isReadyToUpdate() const
 {
     // If we requested an update and have the final LOD ready, then update.
-    if (getViewerTexLayerSet()->isLocalTextureDataFinal()) return TRUE;
+    if (getViewerTexLayerSet()->isLocalTextureDataFinal()) return true;
 
     // If we haven't done an update yet, then just do one now regardless of state of textures.
-    if (mNumLowresUpdates == 0) return TRUE;
+    if (mNumLowresUpdates == 0) return true;
 
     // Update if we've hit a timeout.  Unlike for uploads, we can make this timeout fairly small
     // since render unnecessarily doesn't cost much.
@@ -190,22 +190,22 @@ BOOL LLViewerTexLayerSetBuffer::isReadyToUpdate() const
     if (TEXTURE_TIMEOUT != 0)
     {
         // If we hit our timeout and have textures available at even lower resolution, then update.
-        const BOOL is_update_textures_timeout = mNeedsUpdateTimer.getElapsedTimeF32() >= TEXTURE_TIMEOUT;
-        const BOOL has_lower_lod = getViewerTexLayerSet()->isLocalTextureDataAvailable();
-        if (has_lower_lod && is_update_textures_timeout) return TRUE;
+        const bool is_update_textures_timeout = mNeedsUpdateTimer.getElapsedTimeF32() >= TEXTURE_TIMEOUT;
+        const bool has_lower_lod = getViewerTexLayerSet()->isLocalTextureDataAvailable();
+        if (has_lower_lod && is_update_textures_timeout) return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLViewerTexLayerSetBuffer::requestUpdateImmediate()
+bool LLViewerTexLayerSetBuffer::requestUpdateImmediate()
 {
-    mNeedsUpdate = TRUE;
-    BOOL result = FALSE;
+    mNeedsUpdate = true;
+    bool result = false;
 
     if (needsRender())
     {
-        preRender(FALSE);
+        preRender(false);
         result = render();
         postRender(result);
     }
@@ -218,10 +218,10 @@ BOOL LLViewerTexLayerSetBuffer::requestUpdateImmediate()
 void LLViewerTexLayerSetBuffer::doUpdate()
 {
     LLViewerTexLayerSet* layer_set = getViewerTexLayerSet();
-    const BOOL highest_lod = layer_set->isLocalTextureDataFinal();
+    const bool highest_lod = layer_set->isLocalTextureDataFinal();
     if (highest_lod)
     {
-        mNeedsUpdate = FALSE;
+        mNeedsUpdate = false;
     }
     else
     {
@@ -237,7 +237,7 @@ void LLViewerTexLayerSetBuffer::doUpdate()
     // Print out notification that we updated this texture.
     if (gSavedSettings.getBOOL("DebugAvatarRezTime"))
     {
-        const BOOL highest_lod = layer_set->isLocalTextureDataFinal();
+        const bool highest_lod = layer_set->isLocalTextureDataFinal();
         const std::string lod_str = highest_lod ? "HighRes" : "LowRes";
         LLSD args;
         args["EXISTENCE"] = llformat("%d",(U32)layer_set->getAvatar()->debugGetExistenceTimeElapsedF32());
@@ -256,7 +256,7 @@ void LLViewerTexLayerSetBuffer::doUpdate()
 
 LLViewerTexLayerSet::LLViewerTexLayerSet(LLAvatarAppearance* const appearance) :
     LLTexLayerSet(appearance),
-    mUpdatesEnabled( FALSE )
+    mUpdatesEnabled( false )
 {
 }
 
@@ -265,18 +265,18 @@ LLViewerTexLayerSet::~LLViewerTexLayerSet()
 {
 }
 
-// Returns TRUE if at least one packet of data has been received for each of the textures that this layerset depends on.
-BOOL LLViewerTexLayerSet::isLocalTextureDataAvailable() const
+// Returns true if at least one packet of data has been received for each of the textures that this layerset depends on.
+bool LLViewerTexLayerSet::isLocalTextureDataAvailable() const
 {
-    if (!mAvatarAppearance->isSelf()) return FALSE;
+    if (!mAvatarAppearance->isSelf()) return false;
     return getAvatar()->isLocalTextureDataAvailable(this);
 }
 
 
-// Returns TRUE if all of the data for the textures that this layerset depends on have arrived.
-BOOL LLViewerTexLayerSet::isLocalTextureDataFinal() const
+// Returns true if all of the data for the textures that this layerset depends on have arrived.
+bool LLViewerTexLayerSet::isLocalTextureDataFinal() const
 {
-    if (!mAvatarAppearance->isSelf()) return FALSE;
+    if (!mAvatarAppearance->isSelf()) return false;
     return getAvatar()->isLocalTextureDataFinal(this);
 }
 
@@ -312,7 +312,7 @@ void LLViewerTexLayerSet::createComposite()
     }
 }
 
-void LLViewerTexLayerSet::setUpdatesEnabled( BOOL b )
+void LLViewerTexLayerSet::setUpdatesEnabled( bool b )
 {
     mUpdatesEnabled = b;
 }
@@ -342,7 +342,7 @@ const std::string LLViewerTexLayerSetBuffer::dumpTextureInfo() const
 {
     if (!isAgentAvatarValid()) return "";
 
-    const BOOL is_high_res = TRUE;
+    const bool is_high_res = true;
     const U32 num_low_res = 0;
     const std::string local_texture_info = gAgentAvatarp->debugDumpLocalTextureDataInfo(getViewerTexLayerSet());
 
diff --git a/indra/newview/llviewertexlayer.h b/indra/newview/llviewertexlayer.h
index 0ced450299..6f95fcac6f 100644
--- a/indra/newview/llviewertexlayer.h
+++ b/indra/newview/llviewertexlayer.h
@@ -47,12 +47,12 @@ public:
     virtual ~LLViewerTexLayerSet();
 
     /*virtual*/void             requestUpdate();
-    BOOL                        isLocalTextureDataAvailable() const;
-    BOOL                        isLocalTextureDataFinal() const;
+    bool                        isLocalTextureDataAvailable() const;
+    bool                        isLocalTextureDataFinal() const;
     void                        updateComposite();
     /*virtual*/void             createComposite();
-    void                        setUpdatesEnabled(BOOL b);
-    BOOL                        getUpdatesEnabled() const   { return mUpdatesEnabled; }
+    void                        setUpdatesEnabled(bool b);
+    bool                        getUpdatesEnabled() const   { return mUpdatesEnabled; }
 
     LLVOAvatarSelf*             getAvatar();
     const LLVOAvatarSelf*       getAvatar() const;
@@ -60,7 +60,7 @@ public:
     const LLViewerTexLayerSetBuffer*    getViewerComposite() const;
 
 private:
-    BOOL                        mUpdatesEnabled;
+    bool                        mUpdatesEnabled;
 
 };
 
@@ -79,7 +79,7 @@ public:
 
 public:
     /*virtual*/ S8          getType() const;
-    BOOL                    isInitialized(void) const;
+    bool                    isInitialized(void) const;
     static void             dumpTotalByteCount();
     const std::string       dumpTextureInfo() const;
     virtual void            restoreGLTexture();
@@ -95,8 +95,8 @@ private:
     // Tex Layer Render
     //--------------------------------------------------------------------
     virtual void            preRenderTexLayerSet();
-    virtual void            midRenderTexLayerSet(BOOL success);
-    virtual void            postRenderTexLayerSet(BOOL success);
+    virtual void            midRenderTexLayerSet(bool success);
+    virtual void            postRenderTexLayerSet(bool success);
     virtual S32             getCompositeOriginX() const { return getOriginX(); }
     virtual S32             getCompositeOriginY() const { return getOriginY(); }
     virtual S32             getCompositeWidth() const { return getFullWidth(); }
@@ -106,25 +106,25 @@ private:
     // Dynamic Texture Interface
     //--------------------------------------------------------------------
 public:
-    /*virtual*/ BOOL        needsRender();
+    /*virtual*/ bool        needsRender();
 protected:
     // Pass these along for tex layer rendering.
-    virtual void            preRender(BOOL clear_depth) { preRenderTexLayerSet(); }
-    virtual void            postRender(BOOL success) { postRenderTexLayerSet(success); }
-    virtual BOOL            render() { return renderTexLayerSet(mBoundTarget); }
+    virtual void            preRender(bool clear_depth) { preRenderTexLayerSet(); }
+    virtual void            postRender(bool success) { postRenderTexLayerSet(success); }
+    virtual bool            render() { return renderTexLayerSet(mBoundTarget); }
 
     //--------------------------------------------------------------------
     // Updates
     //--------------------------------------------------------------------
 public:
     void                    requestUpdate();
-    BOOL                    requestUpdateImmediate();
+    bool                    requestUpdateImmediate();
 protected:
-    BOOL                    isReadyToUpdate() const;
+    bool                    isReadyToUpdate() const;
     void                    doUpdate();
     void                    restartUpdateTimer();
 private:
-    BOOL                    mNeedsUpdate;                   // Whether we need to locally update our baked textures
+    bool                    mNeedsUpdate;                   // Whether we need to locally update our baked textures
     U32                     mNumLowresUpdates;              // Number of times we've locally updated with lowres version of our baked textures
     LLFrameTimer            mNeedsUpdateTimer;              // Tracks time since update was requested and performed.
 };
diff --git a/indra/newview/llviewertexteditor.cpp b/indra/newview/llviewertexteditor.cpp
index bb025fbcd2..0ab0265586 100644
--- a/indra/newview/llviewertexteditor.cpp
+++ b/indra/newview/llviewertexteditor.cpp
@@ -233,19 +233,19 @@ public:
         }
 
         F32 right_x;
-        mStyle->getFont()->render(mLabel, 0, image_rect.mRight + EMBEDDED_ITEM_LABEL_PADDING, draw_rect.mTop, color, LLFontGL::LEFT, LLFontGL::TOP, LLFontGL::UNDERLINE, LLFontGL::NO_SHADOW, mLabel.length(), S32_MAX, &right_x);
+        mStyle->getFont()->render(mLabel, 0, image_rect.mRight + EMBEDDED_ITEM_LABEL_PADDING, draw_rect.mTop, color, LLFontGL::LEFT, LLFontGL::TOP, LLFontGL::UNDERLINE, LLFontGL::NO_SHADOW, static_cast<S32>(mLabel.length()), S32_MAX, &right_x);
         return right_x;
     }
 
     /*virtual*/ bool            canEdit() const { return false; }
 
 
-    /*virtual*/ BOOL            handleHover(S32 x, S32 y, MASK mask)
+    /*virtual*/ bool            handleHover(S32 x, S32 y, MASK mask)
     {
         LLUI::getInstance()->getWindow()->setCursor(UI_CURSOR_HAND);
-        return TRUE;
+        return true;
     }
-    virtual BOOL                handleToolTip(S32 x, S32 y, MASK mask )
+    virtual bool                handleToolTip(S32 x, S32 y, MASK mask )
     {
         if (mItem->getThumbnailUUID().notNull())
         {
@@ -259,15 +259,15 @@ public:
                     .create_callback(boost::bind(&LLInspectTextureUtil::createInventoryToolTip, _1))
                     .create_params(params));
 
-            return TRUE;
+            return true;
         }
 
         if (!mToolTip.empty())
         {
             LLToolTipMgr::instance().show(mToolTip);
-            return TRUE;
+            return true;
         }
-        return FALSE;
+        return false;
     }
 
     /*virtual*/ LLStyleConstSP      getStyle() const { return mStyle; }
@@ -305,10 +305,10 @@ public:
     // return true if there are no embedded items.
     bool empty();
 
-    BOOL    insertEmbeddedItem(LLInventoryItem* item, llwchar* value, bool is_new);
-    BOOL    removeEmbeddedItem( llwchar ext_char );
+    bool    insertEmbeddedItem(LLInventoryItem* item, llwchar* value, bool is_new);
+    bool    removeEmbeddedItem( llwchar ext_char );
 
-    BOOL    hasEmbeddedItem(llwchar ext_char); // returns TRUE if /this/ editor has an entry for this item
+    bool    hasEmbeddedItem(llwchar ext_char); // returns true if /this/ editor has an entry for this item
     LLUIImagePtr getItemImage(llwchar ext_char) const;
 
     void    getEmbeddedItemList( std::vector<LLPointer<LLInventoryItem> >& items );
@@ -323,14 +323,14 @@ public:
     void    markSaved();
 
     static LLPointer<LLInventoryItem> getEmbeddedItemPtr(llwchar ext_char); // returns pointer to item from static list
-    static BOOL getEmbeddedItemSaved(llwchar ext_char); // returns whether item from static list is saved
+    static bool getEmbeddedItemSaved(llwchar ext_char); // returns whether item from static list is saved
 
 private:
 
     struct embedded_info_t
     {
         LLPointer<LLInventoryItem> mItemPtr;
-        BOOL mSaved;
+        bool mSaved;
     };
     typedef std::map<llwchar, embedded_info_t > item_map_t;
     static item_map_t sEntries;
@@ -375,7 +375,7 @@ bool LLEmbeddedItems::empty()
 }
 
 // Inserts a new unique entry
-BOOL LLEmbeddedItems::insertEmbeddedItem( LLInventoryItem* item, llwchar* ext_char, bool is_new)
+bool LLEmbeddedItems::insertEmbeddedItem( LLInventoryItem* item, llwchar* ext_char, bool is_new)
 {
     // Now insert a new one
     llwchar wc_emb;
@@ -395,20 +395,20 @@ BOOL LLEmbeddedItems::insertEmbeddedItem( LLInventoryItem* item, llwchar* ext_ch
         wc_emb = last->first;
         if (wc_emb >= LLTextEditor::LAST_EMBEDDED_CHAR)
         {
-            return FALSE;
+            return false;
         }
         ++wc_emb;
     }
 
     sEntries[wc_emb].mItemPtr = item;
-    sEntries[wc_emb].mSaved = is_new ? FALSE : TRUE;
+    sEntries[wc_emb].mSaved = !is_new;
     *ext_char = wc_emb;
     mEmbeddedUsedChars.insert(wc_emb);
-    return TRUE;
+    return true;
 }
 
 // Removes an entry (all entries are unique)
-BOOL LLEmbeddedItems::removeEmbeddedItem( llwchar ext_char )
+bool LLEmbeddedItems::removeEmbeddedItem( llwchar ext_char )
 {
     mEmbeddedUsedChars.erase(ext_char);
     item_map_t::iterator iter = sEntries.find(ext_char);
@@ -416,9 +416,9 @@ BOOL LLEmbeddedItems::removeEmbeddedItem( llwchar ext_char )
     {
         sEntries.erase(ext_char);
         sFreeEntries.push(ext_char);
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 // static
@@ -436,7 +436,7 @@ LLPointer<LLInventoryItem> LLEmbeddedItems::getEmbeddedItemPtr(llwchar ext_char)
 }
 
 // static
-BOOL LLEmbeddedItems::getEmbeddedItemSaved(llwchar ext_char)
+bool LLEmbeddedItems::getEmbeddedItemSaved(llwchar ext_char)
 {
     if( ext_char >= LLTextEditor::FIRST_EMBEDDED_CHAR && ext_char <= LLTextEditor::LAST_EMBEDDED_CHAR )
     {
@@ -446,7 +446,7 @@ BOOL LLEmbeddedItems::getEmbeddedItemSaved(llwchar ext_char)
             return iter->second.mSaved;
         }
     }
-    return FALSE;
+    return false;
 }
 
 llwchar LLEmbeddedItems::getEmbeddedCharFromIndex(S32 index)
@@ -514,14 +514,14 @@ S32 LLEmbeddedItems::getIndexFromEmbeddedChar(llwchar wch)
     }
 }
 
-BOOL LLEmbeddedItems::hasEmbeddedItem(llwchar ext_char)
+bool LLEmbeddedItems::hasEmbeddedItem(llwchar ext_char)
 {
     std::set<llwchar>::iterator iter = mEmbeddedUsedChars.find(ext_char);
     if (iter != mEmbeddedUsedChars.end())
     {
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -606,7 +606,7 @@ void LLEmbeddedItems::markSaved()
     for (std::set<llwchar>::iterator iter = mEmbeddedUsedChars.begin(); iter != mEmbeddedUsedChars.end(); ++iter)
     {
         llwchar wc = *iter;
-        sEntries[wc].mSaved = TRUE;
+        sEntries[wc].mSaved = true;
     }
 }
 
@@ -616,13 +616,13 @@ class LLViewerTextEditor::TextCmdInsertEmbeddedItem : public LLTextBase::TextCmd
 {
 public:
     TextCmdInsertEmbeddedItem( S32 pos, LLInventoryItem* item )
-        : TextCmd(pos, FALSE),
+        : TextCmd(pos, false),
           mExtCharValue(0)
     {
         mItem = item;
     }
 
-    virtual BOOL execute( LLTextBase* editor, S32* delta )
+    virtual bool execute( LLTextBase* editor, S32* delta )
     {
         LLViewerTextEditor* viewer_editor = (LLViewerTextEditor*)editor;
         // Take this opportunity to remove any unused embedded items from this editor
@@ -634,7 +634,7 @@ public:
             *delta = insert(editor, getPosition(), ws );
             return (*delta != 0);
         }
-        return FALSE;
+        return false;
     }
 
     virtual S32 undo( LLTextBase* editor )
@@ -650,7 +650,7 @@ public:
         insert(editor, getPosition(), ws );
         return getPosition() + 1;
     }
-    virtual BOOL hasExtCharValue( llwchar value ) const
+    virtual bool hasExtCharValue( llwchar value ) const
     {
         return (value == mExtCharValue);
     }
@@ -682,7 +682,7 @@ struct LLNotecardCopyInfo
 LLViewerTextEditor::LLViewerTextEditor(const LLViewerTextEditor::Params& p)
 :   LLTextEditor(p),
     mDragItemChar(0),
-    mDragItemSaved(FALSE),
+    mDragItemSaved(false),
     mInventoryCallback(new LLEmbeddedNotecardOpener)
 {
     mEmbeddedItemList = new LLEmbeddedItems(this);
@@ -707,14 +707,14 @@ void LLViewerTextEditor::makePristine()
     LLTextEditor::makePristine();
 }
 
-void LLViewerTextEditor::onVisibilityChange( BOOL new_visibility )
+void LLViewerTextEditor::onVisibilityChange( bool new_visibility )
 {
     LLUICtrl::onVisibilityChange(new_visibility);
 }
 
-BOOL LLViewerTextEditor::handleMouseDown(S32 x, S32 y, MASK mask)
+bool LLViewerTextEditor::handleMouseDown(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     // Let scrollbar have first dibs
     handled = LLView::childrenHandleMouseDown(x, y, mask) != NULL;
@@ -723,7 +723,7 @@ BOOL LLViewerTextEditor::handleMouseDown(S32 x, S32 y, MASK mask)
     {
         if( allowsEmbeddedItems() )
         {
-            setCursorAtLocalPos( x, y, FALSE );
+            setCursorAtLocalPos( x, y, false );
             llwchar wc = 0;
             if (mCursorPos < getLength())
             {
@@ -745,10 +745,10 @@ BOOL LLViewerTextEditor::handleMouseDown(S32 x, S32 y, MASK mask)
 
                 if (hasTabStop())
                 {
-                    setFocus( TRUE );
+                    setFocus( true );
                 }
 
-                handled = TRUE;
+                handled = true;
             }
             else
             {
@@ -766,9 +766,9 @@ BOOL LLViewerTextEditor::handleMouseDown(S32 x, S32 y, MASK mask)
 }
 
 
-BOOL LLViewerTextEditor::handleHover(S32 x, S32 y, MASK mask)
+bool LLViewerTextEditor::handleHover(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = LLTextEditor::handleHover(x, y, mask);
+    bool handled = LLTextEditor::handleHover(x, y, mask);
 
     if(hasMouseCapture() && mDragItem)
     {
@@ -788,16 +788,16 @@ BOOL LLViewerTextEditor::handleHover(S32 x, S32 y, MASK mask)
             return LLToolDragAndDrop::getInstance()->handleHover( x, y, mask );
         }
         getWindow()->setCursor(UI_CURSOR_HAND);
-        handled = TRUE;
+        handled = true;
     }
 
     return handled;
 }
 
 
-BOOL LLViewerTextEditor::handleMouseUp(S32 x, S32 y, MASK mask)
+bool LLViewerTextEditor::handleMouseUp(S32 x, S32 y, MASK mask)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     if( hasMouseCapture() )
     {
@@ -826,9 +826,9 @@ BOOL LLViewerTextEditor::handleMouseUp(S32 x, S32 y, MASK mask)
     return handled;
 }
 
-BOOL LLViewerTextEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLViewerTextEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
-    BOOL    handled = FALSE;
+    bool    handled = false;
 
     // let scrollbar have first dibs
     handled = LLView::childrenHandleDoubleClick(x, y, mask) != NULL;
@@ -837,15 +837,15 @@ BOOL LLViewerTextEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
     {
         if( allowsEmbeddedItems() )
         {
-            S32 doc_index = getDocIndexFromLocalCoord(x, y, FALSE);
+            S32 doc_index = getDocIndexFromLocalCoord(x, y, false);
             llwchar doc_char = getWText()[doc_index];
             if (mEmbeddedItemList->hasEmbeddedItem(doc_char))
             {
                 if( openEmbeddedItemAtPos( doc_index ))
                 {
                     deselect();
-                    setFocus( FALSE );
-                    return TRUE;
+                    setFocus( false );
+                    return true;
                 }
             }
         }
@@ -856,19 +856,19 @@ BOOL LLViewerTextEditor::handleDoubleClick(S32 x, S32 y, MASK mask)
 
 
 // virtual
-BOOL LLViewerTextEditor::handleDragAndDrop(S32 x, S32 y, MASK mask,
-                      BOOL drop, EDragAndDropType cargo_type, void *cargo_data,
+bool LLViewerTextEditor::handleDragAndDrop(S32 x, S32 y, MASK mask,
+                      bool drop, EDragAndDropType cargo_type, void *cargo_data,
                       EAcceptance *accept,
                       std::string& tooltip_msg)
 {
-    BOOL handled = FALSE;
+    bool handled = false;
 
     LLToolDragAndDrop::ESource source = LLToolDragAndDrop::getInstance()->getSource();
     if (LLToolDragAndDrop::SOURCE_NOTECARD == source)
     {
         // We currently do not handle dragging items from one notecard to another
         // since items in a notecard must be in Inventory to be verified. See DEV-2891.
-        return FALSE;
+        return false;
     }
 
     if (getEnabled() && acceptsTextInput())
@@ -918,10 +918,10 @@ BOOL LLViewerTextEditor::handleDragAndDrop(S32 x, S32 y, MASK mask,
                 {
                     deselect();
                     S32 old_cursor = mCursorPos;
-                    setCursorAtLocalPos( x, y, TRUE );
+                    setCursorAtLocalPos( x, y, true );
                     S32 insert_pos = mCursorPos;
                     setCursorPos(old_cursor);
-                    BOOL inserted = insertEmbeddedItem( insert_pos, item );
+                    bool inserted = insertEmbeddedItem( insert_pos, item );
                     if( inserted && (old_cursor > mCursorPos) )
                     {
                         setCursorPos(mCursorPos + 1);
@@ -951,7 +951,7 @@ BOOL LLViewerTextEditor::handleDragAndDrop(S32 x, S32 y, MASK mask,
         *accept = ACCEPT_NO;
     }
 
-    handled = TRUE;
+    handled = true;
     LL_DEBUGS("UserInput") << "dragAndDrop handled by LLViewerTextEditor " << getName() << LL_ENDL;
 
     return handled;
@@ -1099,7 +1099,7 @@ void LLViewerTextEditor::findEmbeddedItemSegments(S32 start, S32 end)
     }
 }
 
-BOOL LLViewerTextEditor::openEmbeddedItemAtPos(S32 pos)
+bool LLViewerTextEditor::openEmbeddedItemAtPos(S32 pos)
 {
     if( pos < getLength())
     {
@@ -1107,7 +1107,7 @@ BOOL LLViewerTextEditor::openEmbeddedItemAtPos(S32 pos)
         LLPointer<LLInventoryItem> item = LLEmbeddedItems::getEmbeddedItemPtr( wc );
         if( item )
         {
-            BOOL saved = LLEmbeddedItems::getEmbeddedItemSaved( wc );
+            bool saved = LLEmbeddedItems::getEmbeddedItemSaved( wc );
             if (saved)
             {
                 return openEmbeddedItem(item, wc);
@@ -1118,36 +1118,36 @@ BOOL LLViewerTextEditor::openEmbeddedItemAtPos(S32 pos)
             }
         }
     }
-    return FALSE;
+    return false;
 }
 
 
-BOOL LLViewerTextEditor::openEmbeddedItem(LLPointer<LLInventoryItem> item, llwchar wc)
+bool LLViewerTextEditor::openEmbeddedItem(LLPointer<LLInventoryItem> item, llwchar wc)
 {
 
     switch( item->getType() )
     {
         case LLAssetType::AT_TEXTURE:
             openEmbeddedTexture( item, wc );
-            return TRUE;
+            return true;
 
         case LLAssetType::AT_SOUND:
             openEmbeddedSound( item, wc );
-            return TRUE;
+            return true;
 
         case LLAssetType::AT_LANDMARK:
             openEmbeddedLandmark( item, wc );
-            return TRUE;
+            return true;
 
         case LLAssetType::AT_CALLINGCARD:
             openEmbeddedCallingcard( item, wc );
-            return TRUE;
+            return true;
         case LLAssetType::AT_SETTINGS:
             openEmbeddedSetting(item, wc);
-            return TRUE;
+            return true;
         case LLAssetType::AT_MATERIAL:
             openEmbeddedGLTFMaterial(item, wc);
-            return TRUE;
+            return true;
         case LLAssetType::AT_NOTECARD:
         case LLAssetType::AT_LSL_TEXT:
         case LLAssetType::AT_CLOTHING:
@@ -1156,9 +1156,9 @@ BOOL LLViewerTextEditor::openEmbeddedItem(LLPointer<LLInventoryItem> item, llwch
         case LLAssetType::AT_ANIMATION:
         case LLAssetType::AT_GESTURE:
             showCopyToInvDialog( item, wc );
-            return TRUE;
+            return true;
         default:
-            return FALSE;
+            return false;
     }
 
 }
@@ -1254,7 +1254,7 @@ void LLViewerTextEditor::openEmbeddedGLTFMaterial(LLInventoryItem* item, llwchar
         preview->setAuxItem(item);
         preview->setNotecardInfo(mNotecardInventoryID, mObjectID);
         preview->openFloater(floater_key);
-        preview->setFocus(TRUE);
+        preview->setFocus(true);
     }
 }
 
@@ -1355,13 +1355,13 @@ bool LLViewerTextEditor::hasEmbeddedInventory()
 
 ////////////////////////////////////////////////////////////////////////////
 
-BOOL LLViewerTextEditor::importBuffer( const char* buffer, S32 length )
+bool LLViewerTextEditor::importBuffer( const char* buffer, S32 length )
 {
     LLMemoryStream str((U8*)buffer, length);
     return importStream(str);
 }
 
-BOOL LLViewerTextEditor::exportBuffer( std::string& buffer )
+bool LLViewerTextEditor::exportBuffer( std::string& buffer )
 {
     LLNotecard nc(LLNotecard::MAX_SIZE);
 
@@ -1378,6 +1378,6 @@ BOOL LLViewerTextEditor::exportBuffer( std::string& buffer )
 
     buffer = out_stream.str();
 
-    return TRUE;
+    return true;
 }
 
diff --git a/indra/newview/llviewertexteditor.h b/indra/newview/llviewertexteditor.h
index c3967d3a1c..42f69dccf3 100644
--- a/indra/newview/llviewertexteditor.h
+++ b/indra/newview/llviewertexteditor.h
@@ -47,22 +47,22 @@ public:
 
     virtual void makePristine();
 
-    /*virtual*/ void onVisibilityChange( BOOL new_visibility );
+    /*virtual*/ void onVisibilityChange( bool new_visibility );
 
     // mousehandler overrides
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleDoubleClick(S32 x, S32 y, MASK mask );
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleHover(S32 x, S32 y, MASK mask);
+    virtual bool    handleDoubleClick(S32 x, S32 y, MASK mask );
 
-    virtual BOOL    handleDragAndDrop(S32 x, S32 y, MASK mask,
-                                        BOOL drop, EDragAndDropType cargo_type,
+    virtual bool    handleDragAndDrop(S32 x, S32 y, MASK mask,
+                                        bool drop, EDragAndDropType cargo_type,
                                         void *cargo_data, EAcceptance *accept, std::string& tooltip_msg);
 
     const class LLInventoryItem* getDragItem() const { return mDragItem; }
-    virtual BOOL    importBuffer(const char* buffer, S32 length);
+    virtual bool    importBuffer(const char* buffer, S32 length);
     virtual bool    importStream(std::istream& str);
-    virtual BOOL    exportBuffer(std::string& buffer);
+    virtual bool    exportBuffer(std::string& buffer);
     virtual void    onValueChange(S32 start, S32 end);
 
     void setNotecardInfo(const LLUUID& notecard_item_id, const LLUUID& object_id, const LLUUID& preview_id)
@@ -95,8 +95,8 @@ private:
     void findEmbeddedItemSegments(S32 start, S32 end);
     virtual llwchar pasteEmbeddedItem(llwchar ext_char);
 
-    BOOL            openEmbeddedItemAtPos( S32 pos );
-    BOOL            openEmbeddedItem(LLPointer<LLInventoryItem> item, llwchar wc);
+    bool            openEmbeddedItemAtPos( S32 pos );
+    bool            openEmbeddedItem(LLPointer<LLInventoryItem> item, llwchar wc);
 
     S32             insertEmbeddedItem(S32 pos, LLInventoryItem* item);
 
@@ -118,7 +118,7 @@ private:
     LLPointer<LLInventoryItem> mDragItem;
     LLTextSegment* mDragSegment;
     llwchar mDragItemChar;
-    BOOL mDragItemSaved;
+    bool mDragItemSaved;
     class LLEmbeddedItems* mEmbeddedItemList;
 
     LLUUID mObjectID;
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index 9aee1c0caf..c1062b9a01 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -1,3 +1,4 @@
+
 /**
  * @file llviewertexture.cpp
  * @brief Object which handles a received image (and associated texture(s))
@@ -100,6 +101,9 @@ U32 LLViewerTexture::sMaxSmallImageSize = MAX_CACHED_RAW_IMAGE_AREA;
 bool LLViewerTexture::sFreezeImageUpdates = false;
 F32 LLViewerTexture::sCurrentTime = 0.0f;
 
+constexpr F32 MIN_VRAM_BUDGET = 768.f;
+F32 LLViewerTexture::sFreeVRAMMegabytes = MIN_VRAM_BUDGET;
+
 LLViewerTexture::EDebugTexels LLViewerTexture::sDebugTexelsMode = LLViewerTexture::DEBUG_TEXELS_OFF;
 
 const F64 log_2 = log(2.0);
@@ -116,11 +120,11 @@ const U32 DESIRED_NORMAL_TEXTURE_SIZE = (U32)LLViewerFetchedTexture::MAX_IMAGE_S
 
 LLLoadedCallbackEntry::LLLoadedCallbackEntry(loaded_callback_func cb,
                       S32 discard_level,
-                      BOOL need_imageraw, // Needs image raw for the callback
+                      bool need_imageraw, // Needs image raw for the callback
                       void* userdata,
                       LLLoadedCallbackEntry::source_callback_list_t* src_callback_list,
                       LLViewerFetchedTexture* target,
-                      BOOL pause)
+                      bool pause)
     : mCallback(cb),
       mLastUsedDiscard(MAX_DISCARD_LEVEL+1),
       mDesiredDiscard(discard_level),
@@ -141,7 +145,7 @@ LLLoadedCallbackEntry::~LLLoadedCallbackEntry()
 
 void LLLoadedCallbackEntry::removeTexture(LLViewerFetchedTexture* tex)
 {
-    if(mSourceCallbackList)
+    if (mSourceCallbackList && tex)
     {
         mSourceCallbackList->erase(LLTextureKey(tex->getID(), (ETexListType)tex->getTextureListType()));
     }
@@ -166,7 +170,7 @@ void LLLoadedCallbackEntry::cleanUpCallbackList(LLLoadedCallbackEntry::source_ca
     }
 }
 
-LLViewerMediaTexture* LLViewerTextureManager::createMediaTexture(const LLUUID &media_id, BOOL usemipmaps, LLImageGL* gl_image)
+LLViewerMediaTexture* LLViewerTextureManager::createMediaTexture(const LLUUID &media_id, bool usemipmaps, LLImageGL* gl_image)
 {
     return new LLViewerMediaTexture(media_id, usemipmaps, gl_image);
 }
@@ -212,7 +216,7 @@ LLViewerMediaTexture* LLViewerTextureManager::findMediaTexture(const LLUUID &med
     return LLViewerMediaTexture::findMediaTexture(media_id);
 }
 
-LLViewerMediaTexture*  LLViewerTextureManager::getMediaTexture(const LLUUID& id, BOOL usemipmaps, LLImageGL* gl_image)
+LLViewerMediaTexture*  LLViewerTextureManager::getMediaTexture(const LLUUID& id, bool usemipmaps, LLImageGL* gl_image)
 {
     LLViewerMediaTexture* tex = LLViewerMediaTexture::findMediaTexture(id);
     if(!tex)
@@ -225,7 +229,7 @@ LLViewerMediaTexture*  LLViewerTextureManager::getMediaTexture(const LLUUID& id,
     return tex;
 }
 
-LLViewerFetchedTexture* LLViewerTextureManager::staticCastToFetchedTexture(LLTexture* tex, BOOL report_error)
+LLViewerFetchedTexture* LLViewerTextureManager::staticCastToFetchedTexture(LLTexture* tex, bool report_error)
 {
     if(!tex)
     {
@@ -246,7 +250,7 @@ LLViewerFetchedTexture* LLViewerTextureManager::staticCastToFetchedTexture(LLTex
     return NULL;
 }
 
-LLPointer<LLViewerTexture> LLViewerTextureManager::getLocalTexture(BOOL usemipmaps, BOOL generate_gl_tex)
+LLPointer<LLViewerTexture> LLViewerTextureManager::getLocalTexture(bool usemipmaps, bool generate_gl_tex)
 {
     LLPointer<LLViewerTexture> tex = new LLViewerTexture(usemipmaps);
     if(generate_gl_tex)
@@ -256,7 +260,7 @@ LLPointer<LLViewerTexture> LLViewerTextureManager::getLocalTexture(BOOL usemipma
     }
     return tex;
 }
-LLPointer<LLViewerTexture> LLViewerTextureManager::getLocalTexture(const LLUUID& id, BOOL usemipmaps, BOOL generate_gl_tex)
+LLPointer<LLViewerTexture> LLViewerTextureManager::getLocalTexture(const LLUUID& id, bool usemipmaps, bool generate_gl_tex)
 {
     LLPointer<LLViewerTexture> tex = new LLViewerTexture(id, usemipmaps);
     if(generate_gl_tex)
@@ -266,13 +270,13 @@ LLPointer<LLViewerTexture> LLViewerTextureManager::getLocalTexture(const LLUUID&
     }
     return tex;
 }
-LLPointer<LLViewerTexture> LLViewerTextureManager::getLocalTexture(const LLImageRaw* raw, BOOL usemipmaps)
+LLPointer<LLViewerTexture> LLViewerTextureManager::getLocalTexture(const LLImageRaw* raw, bool usemipmaps)
 {
     LLPointer<LLViewerTexture> tex = new LLViewerTexture(raw, usemipmaps);
     tex->setCategory(LLGLTexture::LOCAL);
     return tex;
 }
-LLPointer<LLViewerTexture> LLViewerTextureManager::getLocalTexture(const U32 width, const U32 height, const U8 components, BOOL usemipmaps, BOOL generate_gl_tex)
+LLPointer<LLViewerTexture> LLViewerTextureManager::getLocalTexture(const U32 width, const U32 height, const U8 components, bool usemipmaps, bool generate_gl_tex)
 {
     LLPointer<LLViewerTexture> tex = new LLViewerTexture(width, height, components, usemipmaps);
     if(generate_gl_tex)
@@ -285,6 +289,7 @@ LLPointer<LLViewerTexture> LLViewerTextureManager::getLocalTexture(const U32 wid
 
 LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTexture(const LLImageRaw* raw, FTType type, bool usemipmaps)
 {
+    LLImageDataSharedLock lock(raw);
     LLViewerFetchedTexture* ret = new LLViewerFetchedTexture(raw, type, usemipmaps);
     gTextureList.addImage(ret, TEX_LIST_STANDARD);
     return ret;
@@ -293,7 +298,7 @@ LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTexture(const LLImageR
 LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTexture(
                                                    const LLUUID &image_id,
                                                    FTType f_type,
-                                                   BOOL usemipmaps,
+                                                   bool usemipmaps,
                                                    LLViewerTexture::EBoostLevel boost_priority,
                                                    S8 texture_type,
                                                    LLGLint internal_format,
@@ -306,7 +311,7 @@ LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTexture(
 LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTextureFromFile(
                                                    const std::string& filename,
                                                    FTType f_type,
-                                                   BOOL usemipmaps,
+                                                   bool usemipmaps,
                                                    LLViewerTexture::EBoostLevel boost_priority,
                                                    S8 texture_type,
                                                    LLGLint internal_format,
@@ -319,7 +324,7 @@ LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTextureFromFile(
 //static
 LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTextureFromUrl(const std::string& url,
                                      FTType f_type,
-                                     BOOL usemipmaps,
+                                     bool usemipmaps,
                                      LLViewerTexture::EBoostLevel boost_priority,
                                      S8 texture_type,
                                      LLGLint internal_format,
@@ -330,6 +335,18 @@ LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTextureFromUrl(const s
     return gTextureList.getImageFromUrl(url, f_type, usemipmaps, boost_priority, texture_type, internal_format, primary_format, force_id);
 }
 
+//static
+LLImageRaw* LLViewerTextureManager::getRawImageFromMemory(const U8* data, U32 size, std::string_view mimetype)
+{
+    return gTextureList.getRawImageFromMemory(data, size, mimetype);
+}
+
+//static
+LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTextureFromMemory(const U8* data, U32 size, std::string_view mimetype)
+{
+    return gTextureList.getImageFromMemory(data, size, mimetype);
+}
+
 LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTextureFromHost(const LLUUID& image_id, FTType f_type, LLHost host)
 {
     return gTextureList.getImageFromHost(image_id, f_type, host);
@@ -338,12 +355,12 @@ LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTextureFromHost(const
 // Create a bridge to the viewer texture manager.
 class LLViewerTextureManagerBridge : public LLTextureManagerBridge
 {
-    /*virtual*/ LLPointer<LLGLTexture> getLocalTexture(BOOL usemipmaps = TRUE, BOOL generate_gl_tex = TRUE)
+    /*virtual*/ LLPointer<LLGLTexture> getLocalTexture(bool usemipmaps = true, bool generate_gl_tex = true)
     {
         return LLViewerTextureManager::getLocalTexture(usemipmaps, generate_gl_tex);
     }
 
-    /*virtual*/ LLPointer<LLGLTexture> getLocalTexture(const U32 width, const U32 height, const U8 components, BOOL usemipmaps, BOOL generate_gl_tex = TRUE)
+    /*virtual*/ LLPointer<LLGLTexture> getLocalTexture(const U32 width, const U32 height, const U8 components, bool usemipmaps, bool generate_gl_tex = true)
     {
         return LLViewerTextureManager::getLocalTexture(width, height, components, usemipmaps, generate_gl_tex);
     }
@@ -360,7 +377,7 @@ void LLViewerTextureManager::init()
     {
         LLPointer<LLImageRaw> raw = new LLImageRaw(1,1,3);
         raw->clear(0x77, 0x77, 0x77, 0xFF);
-        LLViewerTexture::sNullImagep = LLViewerTextureManager::getLocalTexture(raw.get(), TRUE);
+        LLViewerTexture::sNullImagep = LLViewerTextureManager::getLocalTexture(raw.get(), true);
     }
 
     const S32 dim = 128;
@@ -368,7 +385,7 @@ void LLViewerTextureManager::init()
     U8* data = image_raw->getData();
 
     memset(data, 0, dim * dim * 3);
-    LLViewerTexture::sBlackImagep = LLViewerTextureManager::getLocalTexture(image_raw.get(), TRUE);
+    LLViewerTexture::sBlackImagep = LLViewerTextureManager::getLocalTexture(image_raw.get(), true);
 
 #if 1
     LLPointer<LLViewerFetchedTexture> imagep = LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT);
@@ -400,7 +417,7 @@ void LLViewerTextureManager::init()
     imagep->setCachedRawImage(0, image_raw);
     image_raw = NULL;
 #else
-    LLViewerFetchedTexture::sDefaultImagep = LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
+    LLViewerFetchedTexture::sDefaultImagep = LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT, true, LLGLTexture::BOOST_UI);
 #endif
     LLViewerFetchedTexture::sDefaultImagep->dontDiscard();
     LLViewerFetchedTexture::sDefaultImagep->setCategory(LLGLTexture::OTHER);
@@ -418,7 +435,7 @@ void LLViewerTextureManager::init()
         data[i+2] = color;
     }
 
-    LLViewerTexture::sCheckerBoardImagep = LLViewerTextureManager::getLocalTexture(image_raw.get(), TRUE);
+    LLViewerTexture::sCheckerBoardImagep = LLViewerTextureManager::getLocalTexture(image_raw.get(), true);
 
     LLViewerTexture::initClass();
 
@@ -467,59 +484,11 @@ void LLViewerTexture::initClass()
     LLImageGL::sDefaultGLTexture = LLViewerFetchedTexture::sDefaultImagep->getGLTexture();
 }
 
-// tuning params
-const F32 GPU_MEMORY_CHECK_WAIT_TIME = 1.0f;
 // non-const (used externally
 F32 texmem_lower_bound_scale = 0.85f;
 F32 texmem_middle_bound_scale = 0.925f;
 
 //static
-bool LLViewerTexture::isMemoryForTextureLow()
-{
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
-    // Note: we need to figure out a better source for 'min' values,
-    // what is free for low end at minimal settings is 'nothing left'
-    // for higher end gpus at high settings.
-    const S32Megabytes MIN_FREE_TEXTURE_MEMORY(20);
-    const S32Megabytes MIN_FREE_MAIN_MEMORY(100);
-
-    S32Megabytes gpu;
-    S32Megabytes physical;
-    getGPUMemoryForTextures(gpu, physical);
-
-    return (gpu < MIN_FREE_TEXTURE_MEMORY); // || (physical < MIN_FREE_MAIN_MEMORY);
-}
-
-//static
-void LLViewerTexture::getGPUMemoryForTextures(S32Megabytes &gpu, S32Megabytes &physical)
-{
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
-    static LLFrameTimer timer;
-
-    static S32Megabytes gpu_res = S32Megabytes(S32_MAX);
-    static S32Megabytes physical_res = S32Megabytes(S32_MAX);
-
-    if (timer.getElapsedTimeF32() < GPU_MEMORY_CHECK_WAIT_TIME) //call this once per second.
-    {
-        gpu = gpu_res;
-        physical = physical_res;
-        return;
-    }
-    timer.reset();
-
-    {
-        gpu_res = (S32Megabytes)gViewerWindow->getWindow()->getAvailableVRAMMegabytes();
-
-        //check main memory, only works for windows and macos.
-        LLMemory::updateMemoryInfo();
-        physical_res = LLMemory::getAvailableMemKB();
-
-        gpu = gpu_res;
-        physical = physical_res;
-    }
-}
-
-//static
 void LLViewerTexture::updateClass()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
@@ -537,15 +506,17 @@ void LLViewerTexture::updateClass()
 
     F64 texture_bytes_alloc = LLImageGL::getTextureBytesAllocated() / 1024.0 / 512.0;
     F64 vertex_bytes_alloc = LLVertexBuffer::getBytesAllocated() / 1024.0 / 512.0;
+    F64 render_bytes_alloc = LLRenderTarget::sBytesAllocated / 1024.0 / 512.0;
 
     // get an estimate of how much video memory we're using
     // NOTE: our metrics miss about half the vram we use, so this biases high but turns out to typically be within 5% of the real number
-    F32 used = (F32)ll_round(texture_bytes_alloc + vertex_bytes_alloc);
+    F32 used = (F32)ll_round(texture_bytes_alloc + vertex_bytes_alloc + render_bytes_alloc);
 
     F32 budget = max_vram_budget == 0 ? gGLManager.mVRAM : max_vram_budget;
 
     // try to leave half a GB for everyone else, but keep at least 768MB for ourselves
-    F32 target = llmax(budget - 512.f, 768.f);
+    F32 target = llmax(budget - 512.f, MIN_VRAM_BUDGET);
+    sFreeVRAMMegabytes = target - used;
 
     F32 over_pct = llmax((used-target) / target, 0.f);
     sDesiredDiscardBias = llmax(sDesiredDiscardBias, 1.f + over_pct);
@@ -562,7 +533,7 @@ void LLViewerTexture::updateClass()
 //-------------------------------------------------------------------------------------------
 const U32 LLViewerTexture::sCurrentFileVersion = 1;
 
-LLViewerTexture::LLViewerTexture(BOOL usemipmaps) :
+LLViewerTexture::LLViewerTexture(bool usemipmaps) :
     LLGLTexture(usemipmaps)
 {
     init(true);
@@ -571,7 +542,7 @@ LLViewerTexture::LLViewerTexture(BOOL usemipmaps) :
     sImageCount++;
 }
 
-LLViewerTexture::LLViewerTexture(const LLUUID& id, BOOL usemipmaps) :
+LLViewerTexture::LLViewerTexture(const LLUUID& id, bool usemipmaps) :
     LLGLTexture(usemipmaps),
     mID(id)
 {
@@ -580,7 +551,7 @@ LLViewerTexture::LLViewerTexture(const LLUUID& id, BOOL usemipmaps) :
     sImageCount++;
 }
 
-LLViewerTexture::LLViewerTexture(const U32 width, const U32 height, const U8 components, BOOL usemipmaps)  :
+LLViewerTexture::LLViewerTexture(const U32 width, const U32 height, const U8 components, bool usemipmaps)  :
     LLGLTexture(width, height, components, usemipmaps)
 {
     init(true);
@@ -589,7 +560,7 @@ LLViewerTexture::LLViewerTexture(const U32 width, const U32 height, const U8 com
     sImageCount++;
 }
 
-LLViewerTexture::LLViewerTexture(const LLImageRaw* raw, BOOL usemipmaps) :
+LLViewerTexture::LLViewerTexture(const LLImageRaw* raw, bool usemipmaps) :
     LLGLTexture(raw, usemipmaps)
 {
     init(true);
@@ -737,9 +708,9 @@ bool LLViewerTexture::bindDefaultImage(S32 stage)
 }
 
 //virtual
-BOOL LLViewerTexture::isMissingAsset()const
+bool LLViewerTexture::isMissingAsset()const
 {
-    return FALSE;
+    return false;
 }
 
 //virtual
@@ -747,12 +718,12 @@ void LLViewerTexture::forceImmediateUpdate()
 {
 }
 
-void LLViewerTexture::addTextureStats(F32 virtual_size, BOOL needs_gltexture) const
+void LLViewerTexture::addTextureStats(F32 virtual_size, bool needs_gltexture) const
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     if(needs_gltexture)
     {
-        mNeedsGLTexture = TRUE;
+        mNeedsGLTexture = true;
     }
 
     virtual_size = llmin(virtual_size, LLViewerFetchedTexture::sMaxVirtualSize);
@@ -806,8 +777,8 @@ void LLViewerTexture::removeFace(U32 ch, LLFace* facep)
     if(mNumFaces[ch] > 1)
     {
         S32 index = facep->getIndexInTex(ch);
-        llassert(index < mFaceList[ch].size());
-        llassert(index < mNumFaces[ch]);
+        llassert(index < (S32)mFaceList[ch].size());
+        llassert(index < (S32)mNumFaces[ch]);
         mFaceList[ch][index] = mFaceList[ch][--mNumFaces[ch]];
         mFaceList[ch][index]->setIndexInTex(ch, index);
     }
@@ -859,8 +830,8 @@ void LLViewerTexture::removeVolume(U32 ch, LLVOVolume* volumep)
     if (mNumVolumes[ch] > 1)
     {
         S32 index = volumep->getIndexInTex(ch);
-        llassert(index < mVolumeList[ch].size());
-        llassert(index < mNumVolumes[ch]);
+        llassert(index < (S32)mVolumeList[ch].size());
+        llassert(index < (S32)mNumVolumes[ch]);
         mVolumeList[ch][index] = mVolumeList[ch][--mNumVolumes[ch]];
         mVolumeList[ch][index]->setIndexInTex(ch, index);
     }
@@ -940,7 +911,7 @@ void LLViewerTexture::setCachedRawImage(S32 discard_level, LLImageRaw* imageraw)
     //nothing here.
 }
 
-BOOL LLViewerTexture::isLargeImage()
+bool LLViewerTexture::isLargeImage()
 {
     return  (S32)mTexelsPerImage > LLViewerTexture::sMinLargeImageSize;
 }
@@ -997,11 +968,11 @@ LLViewerFetchedTexture* LLViewerFetchedTexture::getSmokeImage()
     return sSmokeImagep;
 }
 
-LLViewerFetchedTexture::LLViewerFetchedTexture(const LLUUID& id, FTType f_type, const LLHost& host, BOOL usemipmaps)
+LLViewerFetchedTexture::LLViewerFetchedTexture(const LLUUID& id, FTType f_type, const LLHost& host, bool usemipmaps)
     : LLViewerTexture(id, usemipmaps),
     mTargetHost(host)
 {
-    init(TRUE);
+    init(true);
     mFTType = f_type;
     if (mFTType == FTT_HOST_BAKE)
     {
@@ -1010,18 +981,18 @@ LLViewerFetchedTexture::LLViewerFetchedTexture(const LLUUID& id, FTType f_type,
     generateGLTexture();
 }
 
-LLViewerFetchedTexture::LLViewerFetchedTexture(const LLImageRaw* raw, FTType f_type, BOOL usemipmaps)
+LLViewerFetchedTexture::LLViewerFetchedTexture(const LLImageRaw* raw, FTType f_type, bool usemipmaps)
     : LLViewerTexture(raw, usemipmaps)
 {
-    init(TRUE);
+    init(true);
     mFTType = f_type;
 }
 
-LLViewerFetchedTexture::LLViewerFetchedTexture(const std::string& url, FTType f_type, const LLUUID& id, BOOL usemipmaps)
+LLViewerFetchedTexture::LLViewerFetchedTexture(const std::string& url, FTType f_type, const LLUUID& id, bool usemipmaps)
     : LLViewerTexture(id, usemipmaps),
     mUrl(url)
 {
-    init(TRUE);
+    init(true);
     mFTType = f_type;
     generateGLTexture();
 }
@@ -1030,20 +1001,20 @@ void LLViewerFetchedTexture::init(bool firstinit)
 {
     mOrigWidth = 0;
     mOrigHeight = 0;
-    mHasAux = FALSE;
-    mNeedsAux = FALSE;
+    mHasAux = false;
+    mNeedsAux = false;
     mRequestedDiscardLevel = -1;
     mRequestedDownloadPriority = 0.f;
-    mFullyLoaded = FALSE;
+    mFullyLoaded = false;
     mCanUseHTTP = true;
     mDesiredDiscardLevel = MAX_DISCARD_LEVEL + 1;
     mMinDesiredDiscardLevel = MAX_DISCARD_LEVEL + 1;
 
-    mDecodingAux = FALSE;
+    mDecodingAux = false;
 
     mKnownDrawWidth = 0;
     mKnownDrawHeight = 0;
-    mKnownDrawSizeChanged = FALSE;
+    mKnownDrawSizeChanged = false;
 
     if (firstinit)
     {
@@ -1052,43 +1023,43 @@ void LLViewerFetchedTexture::init(bool firstinit)
 
     // Only set mIsMissingAsset true when we know for certain that the database
     // does not contain this image.
-    mIsMissingAsset = FALSE;
+    mIsMissingAsset = false;
 
     mLoadedCallbackDesiredDiscardLevel = S8_MAX;
-    mPauseLoadedCallBacks = FALSE;
+    mPauseLoadedCallBacks = false;
 
     mNeedsCreateTexture = false;
 
-    mIsRawImageValid = FALSE;
+    mIsRawImageValid = false;
     mRawDiscardLevel = INVALID_DISCARD_LEVEL;
     mMinDiscardLevel = 0;
 
-    mHasFetcher = FALSE;
-    mIsFetching = FALSE;
+    mHasFetcher = false;
+    mIsFetching = false;
     mFetchState = 0;
     mFetchPriority = 0;
     mDownloadProgress = 0.f;
     mFetchDeltaTime = 999999.f;
     mRequestDeltaTime = 0.f;
-    mForSculpt = FALSE;
-    mIsFetched = FALSE;
-    mInFastCacheList = FALSE;
+    mForSculpt = false;
+    mIsFetched = false;
+    mInFastCacheList = false;
 
     mCachedRawImage = NULL;
     mCachedRawDiscardLevel = -1;
-    mCachedRawImageReady = FALSE;
+    mCachedRawImageReady = false;
 
     mSavedRawImage = NULL;
-    mForceToSaveRawImage  = FALSE;
-    mSaveRawImage = FALSE;
+    mForceToSaveRawImage  = false;
+    mSaveRawImage = false;
     mSavedRawDiscardLevel = -1;
     mDesiredSavedRawDiscardLevel = -1;
     mLastReferencedSavedRawImageTime = 0.0f;
     mKeptSavedRawImageTime = 0.f;
     mLastCallBackActiveTime = 0.f;
-    mForceCallbackFetch = FALSE;
-    mInDebug = FALSE;
-    mUnremovable = FALSE;
+    mForceCallbackFetch = false;
+    mInDebug = false;
+    mUnremovable = false;
 
     mFTType = FTT_UNKNOWN;
 }
@@ -1126,18 +1097,18 @@ void LLViewerFetchedTexture::cleanup()
         LLLoadedCallbackEntry *entryp = *iter++;
         // We never finished loading the image.  Indicate failure.
         // Note: this allows mLoadedCallbackUserData to be cleaned up.
-        entryp->mCallback( FALSE, this, NULL, NULL, 0, TRUE, entryp->mUserData );
+        entryp->mCallback( false, this, NULL, NULL, 0, true, entryp->mUserData );
         entryp->removeTexture(this);
         delete entryp;
     }
     mLoadedCallbackList.clear();
-    mNeedsAux = FALSE;
+    mNeedsAux = false;
 
     // Clean up image data
     destroyRawImage();
     mCachedRawImage = NULL;
     mCachedRawDiscardLevel = -1;
-    mCachedRawImageReady = FALSE;
+    mCachedRawImageReady = false;
     mSavedRawImage = NULL;
     mSavedRawDiscardLevel = -1;
 }
@@ -1150,7 +1121,7 @@ void LLViewerFetchedTexture::loadFromFastCache()
     {
         return; //no need to access the fast cache.
     }
-    mInFastCacheList = FALSE;
+    mInFastCacheList = false;
 
     add(LLTextureFetch::sCacheAttempt, 1.0);
 
@@ -1203,7 +1174,7 @@ void LLViewerFetchedTexture::loadFromFastCache()
             }
 
             mRequestedDiscardLevel = mDesiredDiscardLevel + 1;
-            mIsRawImageValid = TRUE;
+            mIsRawImageValid = true;
             addToCreateTexture();
         }
     }
@@ -1217,7 +1188,7 @@ void LLViewerFetchedTexture::setForSculpt()
 {
     static const S32 MAX_INTERVAL = 8; //frames
 
-    mForSculpt = TRUE;
+    mForSculpt = true;
     if(isForSculptOnly() && hasGLTexture() && !getBoundRecently())
     {
         destroyGLTexture(); //sculpt image does not need gl texture.
@@ -1227,22 +1198,22 @@ void LLViewerFetchedTexture::setForSculpt()
     setMaxVirtualSizeResetInterval(MAX_INTERVAL);
 }
 
-BOOL LLViewerFetchedTexture::isForSculptOnly() const
+bool LLViewerFetchedTexture::isForSculptOnly() const
 {
     return mForSculpt && !mNeedsGLTexture;
 }
 
-BOOL LLViewerFetchedTexture::isDeleted()
+bool LLViewerFetchedTexture::isDeleted()
 {
     return mTextureState == DELETED;
 }
 
-BOOL LLViewerFetchedTexture::isInactive()
+bool LLViewerFetchedTexture::isInactive()
 {
     return mTextureState == INACTIVE;
 }
 
-BOOL LLViewerFetchedTexture::isDeletionCandidate()
+bool LLViewerFetchedTexture::isDeletionCandidate()
 {
     return mTextureState == DELETION_CANDIDATE;
 }
@@ -1264,7 +1235,7 @@ void LLViewerFetchedTexture::setInactive()
     }
 }
 
-BOOL LLViewerFetchedTexture::isFullyLoaded() const
+bool LLViewerFetchedTexture::isFullyLoaded() const
 {
     // Unfortunately, the boolean "mFullyLoaded" is never updated correctly so we use that logic
     // to check if the texture is there and completely downloaded
@@ -1311,7 +1282,7 @@ void LLViewerFetchedTexture::destroyTexture()
 
     //LL_DEBUGS("Avatar") << mID << LL_ENDL;
     destroyGLTexture();
-    mFullyLoaded = FALSE;
+    mFullyLoaded = false;
 }
 
 void LLViewerFetchedTexture::addToCreateTexture()
@@ -1337,7 +1308,7 @@ void LLViewerFetchedTexture::addToCreateTexture()
         }
 
         //discard the cached raw image and the saved raw image
-        mCachedRawImageReady = FALSE;
+        mCachedRawImageReady = false;
         mCachedRawDiscardLevel = -1;
         mCachedRawImage = NULL;
         mSavedRawDiscardLevel = -1;
@@ -1347,7 +1318,7 @@ void LLViewerFetchedTexture::addToCreateTexture()
     if(isForSculptOnly())
     {
         //just update some variables, not to create a real GL texture.
-        createGLTexture(mRawDiscardLevel, mRawImage, 0, FALSE);
+        createGLTexture(mRawDiscardLevel, mRawImage, 0, false);
         mNeedsCreateTexture = false;
         destroyRawImage();
     }
@@ -1367,8 +1338,8 @@ void LLViewerFetchedTexture::addToCreateTexture()
         //
         if(mRequestedDiscardLevel <= mDesiredDiscardLevel && !mForceToSaveRawImage)
         {
-            S32 w = mFullWidth >> mRawDiscardLevel;
-            S32 h = mFullHeight >> mRawDiscardLevel;
+            U32 w = mFullWidth >> mRawDiscardLevel;
+            U32 h = mFullHeight >> mRawDiscardLevel;
 
             //if big image, do not load extra data
             //scale it down to size >= LLViewerTexture::sMinLargeImageSize
@@ -1409,7 +1380,7 @@ void LLViewerFetchedTexture::addToCreateTexture()
 }
 
 // ONLY called from LLViewerTextureList
-BOOL LLViewerFetchedTexture::preCreateTexture(S32 usename/*= 0*/)
+bool LLViewerFetchedTexture::preCreateTexture(S32 usename/*= 0*/)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
 #if LL_IMAGEGL_THREAD_CHECK
@@ -1419,7 +1390,7 @@ BOOL LLViewerFetchedTexture::preCreateTexture(S32 usename/*= 0*/)
     if (!mNeedsCreateTexture)
     {
         destroyRawImage();
-        return FALSE;
+        return false;
     }
     mNeedsCreateTexture = false;
 
@@ -1431,13 +1402,13 @@ BOOL LLViewerFetchedTexture::preCreateTexture(S32 usename/*= 0*/)
     {
         LL_WARNS() << "Can't create a texture: invalid image data" << LL_ENDL;
         destroyRawImage();
-        return FALSE;
+        return false;
     }
     //  LL_INFOS() << llformat("IMAGE Creating (%d) [%d x %d] Bytes: %d ",
     //                      mRawDiscardLevel,
     //                      mRawImage->getWidth(), mRawImage->getHeight(),mRawImage->getDataSize())
     //          << mID.getString() << LL_ENDL;
-    BOOL res = TRUE;
+    bool res = true;
 
     // store original size only for locally-sourced images
     if (mUrl.compare(0, 7, "file://") == 0)
@@ -1453,7 +1424,7 @@ BOOL LLViewerFetchedTexture::preCreateTexture(S32 usename/*= 0*/)
         }
         else
         { // leave black border, do not scale image content
-            mRawImage->expandToPowerOfTwo(MAX_IMAGE_SIZE, FALSE);
+            mRawImage->expandToPowerOfTwo(MAX_IMAGE_SIZE, false);
         }
 
         mFullWidth = mRawImage->getWidth();
@@ -1499,7 +1470,7 @@ BOOL LLViewerFetchedTexture::preCreateTexture(S32 usename/*= 0*/)
         LL_WARNS() << "!size_ok, setting as missing" << LL_ENDL;
         setIsMissingAsset();
         destroyRawImage();
-        return FALSE;
+        return false;
     }
 
     if (mGLTexturep->getHasExplicitFormat())
@@ -1518,21 +1489,21 @@ BOOL LLViewerFetchedTexture::preCreateTexture(S32 usename/*= 0*/)
             setIsMissingAsset();
             destroyRawImage();
             LLAppViewer::getTextureCache()->removeFromCache(mID);
-            return FALSE;
+            return false;
         }
     }
 
     return res;
 }
 
-BOOL LLViewerFetchedTexture::createTexture(S32 usename/*= 0*/)
+bool LLViewerFetchedTexture::createTexture(S32 usename/*= 0*/)
 {
     if (!mNeedsCreateTexture)
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL res = mGLTexturep->createGLTexture(mRawDiscardLevel, mRawImage, usename, TRUE, mBoostLevel);
+    bool res = mGLTexturep->createGLTexture(mRawDiscardLevel, mRawImage, usename, true, mBoostLevel);
 
     return res;
 }
@@ -1552,7 +1523,7 @@ void LLViewerFetchedTexture::postCreateTexture()
 
     if (!needsToSaveRawImage())
     {
-        mNeedsAux = FALSE;
+        mNeedsAux = false;
         destroyRawImage();
     }
 
@@ -1645,8 +1616,8 @@ void LLViewerFetchedTexture::setKnownDrawSize(S32 width, S32 height)
         mKnownDrawWidth = llmax(mKnownDrawWidth, width);
         mKnownDrawHeight = llmax(mKnownDrawHeight, height);
 
-        mKnownDrawSizeChanged = TRUE;
-        mFullyLoaded = FALSE;
+        mKnownDrawSizeChanged = true;
+        mFullyLoaded = false;
     }
     addTextureStats((F32)(mKnownDrawWidth * mKnownDrawHeight));
 }
@@ -1681,7 +1652,7 @@ void LLViewerFetchedTexture::processTextureStats()
         if(mDesiredDiscardLevel > mMinDesiredDiscardLevel)//need to load more
         {
             mDesiredDiscardLevel = llmin(mDesiredDiscardLevel, mMinDesiredDiscardLevel);
-            mFullyLoaded = FALSE;
+            mFullyLoaded = false;
         }
         //setDebugText("fully loaded");
     }
@@ -1713,7 +1684,7 @@ void LLViewerFetchedTexture::processTextureStats()
         else
         {
             U32 desired_size = MAX_IMAGE_SIZE_DEFAULT; // MAX_IMAGE_SIZE_DEFAULT = 2048 and max size ever is 4096
-            if(!mKnownDrawWidth || !mKnownDrawHeight || mFullWidth <= mKnownDrawWidth || mFullHeight <= mKnownDrawHeight)
+            if(!mKnownDrawWidth || !mKnownDrawHeight || (S32)mFullWidth <= mKnownDrawWidth || (S32)mFullHeight <= mKnownDrawHeight)
             {
                 if (mFullWidth > desired_size || mFullHeight > desired_size)
                 {
@@ -1731,11 +1702,11 @@ void LLViewerFetchedTexture::processTextureStats()
                 mDesiredDiscardLevel =  llclamp(mDesiredDiscardLevel, (S8)0, (S8)getMaxDiscardLevel());
                 mDesiredDiscardLevel = llmin(mDesiredDiscardLevel, mMinDesiredDiscardLevel);
             }
-            mKnownDrawSizeChanged = FALSE;
+            mKnownDrawSizeChanged = false;
 
             if(getDiscardLevel() >= 0 && (getDiscardLevel() <= mDesiredDiscardLevel))
             {
-                mFullyLoaded = TRUE;
+                mFullyLoaded = true;
             }
         }
     }
@@ -1745,7 +1716,7 @@ void LLViewerFetchedTexture::processTextureStats()
         mDesiredDiscardLevel = llmin(mDesiredDiscardLevel, (S8)mDesiredSavedRawDiscardLevel);
         if(getDiscardLevel() < 0 || getDiscardLevel() > mDesiredDiscardLevel)
         {
-            mFullyLoaded = FALSE;
+            mFullyLoaded = false;
         }
     }
 }
@@ -1781,10 +1752,10 @@ bool LLViewerFetchedTexture::setDebugFetching(S32 debug_level)
 {
     if(debug_level < 0)
     {
-        mInDebug = FALSE;
+        mInDebug = false;
         return false;
     }
-    mInDebug = TRUE;
+    mInDebug = true;
 
     mDesiredDiscardLevel = debug_level;
 
@@ -1877,12 +1848,12 @@ bool LLViewerFetchedTexture::updateFetch()
         if (mRawImage.notNull()) sRawCount++;
         if (mAuxRawImage.notNull())
         {
-            mHasAux = TRUE;
+            mHasAux = true;
             sAuxCount++;
         }
         if (finished)
         {
-            mIsFetching = FALSE;
+            mIsFetching = false;
             mLastFetchState = -1;
             mLastPacketTimer.reset();
         }
@@ -1899,7 +1870,7 @@ bool LLViewerFetchedTexture::updateFetch()
             LLTexturePipelineTester* tester = (LLTexturePipelineTester*)LLMetricPerformanceTesterBasic::getTester(sTesterName);
             if (tester)
             {
-                mIsFetched = TRUE;
+                mIsFetched = true;
                 tester->updateTextureLoadingStats(this, mRawImage, LLAppViewer::getTextureFetch()->isFromLocalCache(mID));
             }
             mRawDiscardLevel = fetch_discard;
@@ -1918,12 +1889,12 @@ bool LLViewerFetchedTexture::updateFetch()
                     LL_WARNS() << "oversize, setting as missing" << LL_ENDL;
                     setIsMissingAsset();
                     mRawDiscardLevel = INVALID_DISCARD_LEVEL;
-                    mIsFetching = FALSE;
+                    mIsFetching = false;
                     mLastPacketTimer.reset();
                 }
                 else
                 {
-                    mIsRawImageValid = TRUE;
+                    mIsRawImageValid = true;
                     addToCreateTexture();
                 }
 
@@ -1951,7 +1922,7 @@ bool LLViewerFetchedTexture::updateFetch()
                     }
                 }
 
-                return TRUE;
+                return true;
             }
             else
             {
@@ -2095,8 +2066,8 @@ bool LLViewerFetchedTexture::updateFetch()
         if (fetch_request_discard >= 0)
         {
             LL_PROFILE_ZONE_NAMED_CATEGORY_TEXTURE("vftuf - request created");
-            mHasFetcher = TRUE;
-            mIsFetching = TRUE;
+            mHasFetcher = true;
+            mIsFetching = true;
             // in some cases createRequest can modify discard, as an example
             // bake textures are always at discard 0
             mRequestedDiscardLevel = llmin(desired_discard, fetch_request_discard);
@@ -2120,11 +2091,11 @@ bool LLViewerFetchedTexture::updateFetch()
         {
             LL_DEBUGS("Texture") << "exceeded idle time " << FETCH_IDLE_TIME << ", deleting request: " << getID() << LL_ENDL;
             LLAppViewer::getTextureFetch()->deleteRequest(getID(), true);
-            mHasFetcher = FALSE;
+            mHasFetcher = false;
         }
     }
 
-    return mIsFetching ? true : false;
+    return mIsFetching;
 }
 
 void LLViewerFetchedTexture::clearFetchedResults()
@@ -2147,8 +2118,8 @@ void LLViewerFetchedTexture::forceToDeleteRequest()
 {
     if (mHasFetcher)
     {
-        mHasFetcher = FALSE;
-        mIsFetching = FALSE;
+        mHasFetcher = false;
+        mIsFetching = false;
     }
 
     resetTextureStats();
@@ -2156,7 +2127,7 @@ void LLViewerFetchedTexture::forceToDeleteRequest()
     mDesiredDiscardLevel = getMaxDiscardLevel() + 1;
 }
 
-void LLViewerFetchedTexture::setIsMissingAsset(BOOL is_missing)
+void LLViewerFetchedTexture::setIsMissingAsset(bool is_missing)
 {
     if (is_missing == mIsMissingAsset)
     {
@@ -2181,8 +2152,8 @@ void LLViewerFetchedTexture::setIsMissingAsset(BOOL is_missing)
         if (mHasFetcher)
         {
             LLAppViewer::getTextureFetch()->deleteRequest(getID(), true);
-            mHasFetcher = FALSE;
-            mIsFetching = FALSE;
+            mHasFetcher = false;
+            mIsFetching = false;
             mLastPacketTimer.reset();
             mFetchState = 0;
             mFetchPriority = 0;
@@ -2196,8 +2167,8 @@ void LLViewerFetchedTexture::setIsMissingAsset(BOOL is_missing)
 }
 
 void LLViewerFetchedTexture::setLoadedCallback( loaded_callback_func loaded_callback,
-                                       S32 discard_level, BOOL keep_imageraw, BOOL needs_aux, void* userdata,
-                                       LLLoadedCallbackEntry::source_callback_list_t* src_callback_list, BOOL pause)
+                                       S32 discard_level, bool keep_imageraw, bool needs_aux, void* userdata,
+                                       LLLoadedCallbackEntry::source_callback_list_t* src_callback_list, bool pause)
 {
     //
     // Don't do ANYTHING here, just add it to the global callback list
@@ -2231,7 +2202,7 @@ void LLViewerFetchedTexture::setLoadedCallback( loaded_callback_func loaded_call
     mNeedsAux |= needs_aux;
     if(keep_imageraw)
     {
-        mSaveRawImage = TRUE;
+        mSaveRawImage = true;
     }
     if (mNeedsAux && mAuxRawImage.isNull() && getDiscardLevel() >= 0)
     {
@@ -2264,7 +2235,7 @@ void LLViewerFetchedTexture::clearCallbackEntryList()
 
         // We never finished loading the image.  Indicate failure.
         // Note: this allows mLoadedCallbackUserData to be cleaned up.
-        entryp->mCallback(FALSE, this, NULL, NULL, 0, TRUE, entryp->mUserData);
+        entryp->mCallback(false, this, NULL, NULL, 0, true, entryp->mUserData);
         iter = mLoadedCallbackList.erase(iter);
         delete entryp;
     }
@@ -2296,7 +2267,7 @@ void LLViewerFetchedTexture::deleteCallbackEntry(const LLLoadedCallbackEntry::so
         {
             // We never finished loading the image.  Indicate failure.
             // Note: this allows mLoadedCallbackUserData to be cleaned up.
-            entryp->mCallback(FALSE, this, NULL, NULL, 0, TRUE, entryp->mUserData);
+            entryp->mCallback(false, this, NULL, NULL, 0, true, entryp->mUserData);
             iter = mLoadedCallbackList.erase(iter);
             delete entryp;
         }
@@ -2340,30 +2311,30 @@ void LLViewerFetchedTexture::unpauseLoadedCallbacks(const LLLoadedCallbackEntry:
 {
     if(!callback_list)
 {
-        mPauseLoadedCallBacks = FALSE;
+        mPauseLoadedCallBacks = false;
         return;
     }
 
-    BOOL need_raw = FALSE;
+    bool need_raw = false;
     for(callback_list_t::iterator iter = mLoadedCallbackList.begin();
             iter != mLoadedCallbackList.end(); )
     {
         LLLoadedCallbackEntry *entryp = *iter++;
         if(entryp->mSourceCallbackList == callback_list)
         {
-            entryp->mPaused = FALSE;
+            entryp->mPaused = false;
             if(entryp->mNeedsImageRaw)
             {
-                need_raw = TRUE;
+                need_raw = true;
             }
         }
     }
-    mPauseLoadedCallBacks = FALSE ;
+    mPauseLoadedCallBacks = false ;
     mLastCallBackActiveTime = sCurrentTime ;
-    mForceCallbackFetch = TRUE;
+    mForceCallbackFetch = true;
     if(need_raw)
     {
-        mSaveRawImage = TRUE;
+        mSaveRawImage = true;
     }
 }
 
@@ -2382,7 +2353,7 @@ void LLViewerFetchedTexture::pauseLoadedCallbacks(const LLLoadedCallbackEntry::s
         LLLoadedCallbackEntry *entryp = *iter++;
         if(entryp->mSourceCallbackList == callback_list)
         {
-            entryp->mPaused = TRUE;
+            entryp->mPaused = true;
         }
         else if(!entryp->mPaused)
         {
@@ -2392,9 +2363,9 @@ void LLViewerFetchedTexture::pauseLoadedCallbacks(const LLLoadedCallbackEntry::s
 
     if(paused)
     {
-        mPauseLoadedCallBacks = TRUE;//when set, loaded callback is paused.
+        mPauseLoadedCallBacks = true;//when set, loaded callback is paused.
         resetTextureStats();
-        mSaveRawImage = FALSE;
+        mSaveRawImage = false;
     }
 }
 
@@ -2445,7 +2416,7 @@ bool LLViewerFetchedTexture::doLoadedCallbacks()
             LLLoadedCallbackEntry *entryp = *iter++;
             // We never finished loading the image.  Indicate failure.
             // Note: this allows mLoadedCallbackUserData to be cleaned up.
-            entryp->mCallback(FALSE, this, NULL, NULL, 0, TRUE, entryp->mUserData);
+            entryp->mCallback(false, this, NULL, NULL, 0, true, entryp->mUserData);
             delete entryp;
         }
         mLoadedCallbackList.clear();
@@ -2578,11 +2549,11 @@ bool LLViewerFetchedTexture::doLoadedCallbacks()
                 {
                     LL_WARNS() << "Raw Image with no Aux Data for callback" << LL_ENDL;
                 }
-                BOOL final = mRawDiscardLevel <= entryp->mDesiredDiscard ? TRUE : FALSE;
+                bool final = mRawDiscardLevel <= entryp->mDesiredDiscard;
                 //LL_INFOS() << "Running callback for " << getID() << LL_ENDL;
                 //LL_INFOS() << mRawImage->getWidth() << "x" << mRawImage->getHeight() << LL_ENDL;
                 entryp->mLastUsedDiscard = mRawDiscardLevel;
-                entryp->mCallback(TRUE, this, mRawImage, mAuxRawImage, mRawDiscardLevel, final, entryp->mUserData);
+                entryp->mCallback(true, this, mRawImage, mAuxRawImage, mRawDiscardLevel, final, entryp->mUserData);
                 if (final)
                 {
                     iter = mLoadedCallbackList.erase(curiter);
@@ -2609,9 +2580,9 @@ bool LLViewerFetchedTexture::doLoadedCallbacks()
             if (!entryp->mNeedsImageRaw && (entryp->mLastUsedDiscard > gl_discard))
             {
                 mLastCallBackActiveTime = sCurrentTime;
-                BOOL final = gl_discard <= entryp->mDesiredDiscard ? TRUE : FALSE;
+                bool final = gl_discard <= entryp->mDesiredDiscard;
                 entryp->mLastUsedDiscard = gl_discard;
-                entryp->mCallback(TRUE, this, NULL, NULL, gl_discard, final, entryp->mUserData);
+                entryp->mCallback(true, this, NULL, NULL, gl_discard, final, entryp->mUserData);
                 if (final)
                 {
                     iter = mLoadedCallbackList.erase(curiter);
@@ -2636,7 +2607,7 @@ bool LLViewerFetchedTexture::doLoadedCallbacks()
     {
         //wait for long enough but no fetching request issued, force one.
         forceToRefetchTexture(mLoadedCallbackDesiredDiscardLevel, 5.f);
-        mForceCallbackFetch = FALSE; //fire once.
+        mForceCallbackFetch = false; //fire once.
     }
 
     return res;
@@ -2709,7 +2680,7 @@ LLImageRaw* LLViewerFetchedTexture::reloadRawImage(S8 discard_level)
             mRawDiscardLevel = discard_level;
         }
     }
-    mIsRawImageValid = TRUE;
+    mIsRawImageValid = true;
     sRawCount++;
 
     return mRawImage;
@@ -2744,7 +2715,7 @@ void LLViewerFetchedTexture::destroyRawImage()
 
         mRawImage = NULL;
 
-        mIsRawImageValid = FALSE;
+        mIsRawImageValid = false;
         mRawDiscardLevel = INVALID_DISCARD_LEVEL;
     }
 }
@@ -2768,7 +2739,7 @@ void LLViewerFetchedTexture::switchToCachedImage()
             gTextureList.dirtyImage(this);
         }
 
-        mIsRawImageValid = TRUE;
+        mIsRawImageValid = true;
         mRawDiscardLevel = mCachedRawDiscardLevel;
 
         scheduleCreateTexture();
@@ -2814,7 +2785,7 @@ void LLViewerFetchedTexture::setCachedRawImage(S32 discard_level, LLImageRaw* im
             mCachedRawImage = imageraw;
         }
         mCachedRawDiscardLevel = discard_level;
-        mCachedRawImageReady = TRUE;
+        mCachedRawImageReady = true;
     }
 }
 
@@ -2885,7 +2856,7 @@ void LLViewerFetchedTexture::checkCachedRawSculptImage()
     {
         if(getDiscardLevel() != 0)
         {
-            mCachedRawImageReady = FALSE;
+            mCachedRawImageReady = false;
         }
         else if(isForSculptOnly())
         {
@@ -2902,6 +2873,8 @@ void LLViewerFetchedTexture::saveRawImage()
         return;
     }
 
+    LLImageDataSharedLock lock(mRawImage);
+
     mSavedRawDiscardLevel = mRawDiscardLevel;
     if (mBoostLevel == LLGLTexture::BOOST_ICON)
     {
@@ -2938,7 +2911,7 @@ void LLViewerFetchedTexture::saveRawImage()
 
     if(mForceToSaveRawImage && mSavedRawDiscardLevel <= mDesiredSavedRawDiscardLevel)
     {
-        mForceToSaveRawImage = FALSE;
+        mForceToSaveRawImage = false;
     }
 
     mLastReferencedSavedRawImageTime = sCurrentTime;
@@ -2954,7 +2927,7 @@ void LLViewerFetchedTexture::forceToRefetchTexture(S32 desired_discard, F32 kept
     }
 
     //trigger a new fetch.
-    mForceToSaveRawImage = TRUE ;
+    mForceToSaveRawImage = true ;
     mDesiredSavedRawDiscardLevel = desired_discard ;
     mKeptSavedRawImageTime = kept_time ;
     mLastReferencedSavedRawImageTime = sCurrentTime ;
@@ -2974,7 +2947,7 @@ void LLViewerFetchedTexture::forceToSaveRawImage(S32 desired_discard, F32 kept_t
 
     if(!mForceToSaveRawImage || mDesiredSavedRawDiscardLevel < 0 || mDesiredSavedRawDiscardLevel > desired_discard)
     {
-        mForceToSaveRawImage = TRUE;
+        mForceToSaveRawImage = true;
         mDesiredSavedRawDiscardLevel = desired_discard;
 
         //copy from the cached raw image if exists.
@@ -2997,14 +2970,14 @@ void LLViewerFetchedTexture::destroySavedRawImage()
         return; //keep the saved raw image.
     }
 
-    mForceToSaveRawImage  = FALSE;
-    mSaveRawImage = FALSE;
+    mForceToSaveRawImage  = false;
+    mSaveRawImage = false;
 
     clearCallbackEntryList();
 
     mSavedRawImage = NULL ;
-    mForceToSaveRawImage  = FALSE ;
-    mSaveRawImage = FALSE ;
+    mForceToSaveRawImage  = false ;
+    mSaveRawImage = false ;
     mSavedRawDiscardLevel = -1 ;
     mDesiredSavedRawDiscardLevel = -1 ;
     mLastReferencedSavedRawImageTime = 0.0f ;
@@ -3024,7 +2997,7 @@ LLImageRaw* LLViewerFetchedTexture::getSavedRawImage()
     return mSavedRawImage;
 }
 
-BOOL LLViewerFetchedTexture::hasSavedRawImage() const
+bool LLViewerFetchedTexture::hasSavedRawImage() const
 {
     return mSavedRawImage.notNull();
 }
@@ -3041,16 +3014,16 @@ F32 LLViewerFetchedTexture::getElapsedLastReferencedSavedRawImageTime() const
 //----------------------------------------------------------------------------------------------
 //start of LLViewerLODTexture
 //----------------------------------------------------------------------------------------------
-LLViewerLODTexture::LLViewerLODTexture(const LLUUID& id, FTType f_type, const LLHost& host, BOOL usemipmaps)
+LLViewerLODTexture::LLViewerLODTexture(const LLUUID& id, FTType f_type, const LLHost& host, bool usemipmaps)
     : LLViewerFetchedTexture(id, f_type, host, usemipmaps)
 {
-    init(TRUE);
+    init(true);
 }
 
-LLViewerLODTexture::LLViewerLODTexture(const std::string& url, FTType f_type, const LLUUID& id, BOOL usemipmaps)
+LLViewerLODTexture::LLViewerLODTexture(const std::string& url, FTType f_type, const LLUUID& id, bool usemipmaps)
     : LLViewerFetchedTexture(url, f_type, id, usemipmaps)
 {
-    init(TRUE);
+    init(true);
 }
 
 void LLViewerLODTexture::init(bool firstinit)
@@ -3284,7 +3257,7 @@ LLViewerMediaTexture* LLViewerMediaTexture::findMediaTexture(const LLUUID& media
     return media_tex;
 }
 
-LLViewerMediaTexture::LLViewerMediaTexture(const LLUUID& id, BOOL usemipmaps, LLImageGL* gl_image)
+LLViewerMediaTexture::LLViewerMediaTexture(const LLUUID& id, bool usemipmaps, LLImageGL* gl_image)
     : LLViewerTexture(id, usemipmaps),
     mMediaImplp(NULL),
     mUpdateVirtualSizeTime(0)
@@ -3300,9 +3273,9 @@ LLViewerMediaTexture::LLViewerMediaTexture(const LLUUID& id, BOOL usemipmaps, LL
 
     mGLTexturep->setAllowCompression(false);
 
-    mGLTexturep->setNeedsAlphaAndPickMask(FALSE);
+    mGLTexturep->setNeedsAlphaAndPickMask(false);
 
-    mIsPlaying = FALSE;
+    mIsPlaying = false;
 
     setMediaImpl();
 
@@ -3325,17 +3298,17 @@ LLViewerMediaTexture::~LLViewerMediaTexture()
     }
 }
 
-void LLViewerMediaTexture::reinit(BOOL usemipmaps /* = TRUE */)
+void LLViewerMediaTexture::reinit(bool usemipmaps /* = true */)
 {
     llassert(mGLTexturep.notNull());
 
     mUseMipMaps = usemipmaps;
     getLastReferencedTimer()->reset();
     mGLTexturep->setUseMipMaps(mUseMipMaps);
-    mGLTexturep->setNeedsAlphaAndPickMask(FALSE);
+    mGLTexturep->setNeedsAlphaAndPickMask(false);
 }
 
-void LLViewerMediaTexture::setUseMipMaps(BOOL mipmap)
+void LLViewerMediaTexture::setUseMipMaps(bool mipmap)
 {
     mUseMipMaps = mipmap;
 
@@ -3367,11 +3340,11 @@ void LLViewerMediaTexture::setMediaImpl()
 //return true if all faces to reference to this media texture are found
 //Note: mMediaFaceList is valid only for the current instant
 //      because it does not check the face validity after the current frame.
-BOOL LLViewerMediaTexture::findFaces()
+bool LLViewerMediaTexture::findFaces()
 {
     mMediaFaceList.clear();
 
-    BOOL ret = TRUE;
+    bool ret = true;
 
     LLViewerTexture* tex = gTextureList.findImage(mID, TEX_LIST_STANDARD);
     if(tex) //this media is a parcel media for tex.
@@ -3392,7 +3365,7 @@ BOOL LLViewerMediaTexture::findFaces()
 
     if(!mMediaImplp)
     {
-        return TRUE;
+        return true;
     }
 
     //for media on a face.
@@ -3408,13 +3381,13 @@ BOOL LLViewerMediaTexture::findFaces()
             // If this happens, viewer is likely to crash
             llassert(0);
             LL_WARNS() << "Dead object in mMediaImplp's object list" << LL_ENDL;
-            ret = FALSE;
+            ret = false;
             continue;
         }
 
         if (obj->mDrawable.isNull() || obj->mDrawable->isDead())
         {
-            ret = FALSE;
+            ret = false;
             continue;
         }
 
@@ -3429,7 +3402,7 @@ BOOL LLViewerMediaTexture::findFaces()
             }
             else
             {
-                ret = FALSE;
+                ret = false;
             }
         }
     }
@@ -3478,9 +3451,9 @@ void LLViewerMediaTexture::removeMediaFromFace(LLFace* facep)
         return; //no need to remove the face because the media is not in playing.
     }
 
-    mIsPlaying = FALSE; //set to remove the media from the face.
+    mIsPlaying = false; //set to remove the media from the face.
     switchTexture(LLRender::DIFFUSE_MAP, facep);
-    mIsPlaying = TRUE; //set the flag back.
+    mIsPlaying = true; //set the flag back.
 
     if(getTotalNumFaces() < 1) //no face referencing to this media
     {
@@ -3563,12 +3536,12 @@ void LLViewerMediaTexture::removeFace(U32 ch, LLFace* facep)
                 return;
             }
 
-            S32 end = te_list.size();
+            auto end = te_list.size();
 
             for(std::list< LLPointer<LLViewerTexture> >::iterator iter = mTextureList.begin();
                 iter != mTextureList.end(); ++iter)
             {
-                S32 i = 0;
+                size_t i = 0;
 
                 for(i = 0; i < end; i++)
                 {
@@ -3611,7 +3584,7 @@ void LLViewerMediaTexture::stopPlaying()
 //  {
 //      mMediaImplp->stop();
 //  }
-    mIsPlaying = FALSE;
+    mIsPlaying = false;
 }
 
 void LLViewerMediaTexture::switchTexture(U32 ch, LLFace* facep)
@@ -3652,7 +3625,7 @@ void LLViewerMediaTexture::switchTexture(U32 ch, LLFace* facep)
     }
 }
 
-void LLViewerMediaTexture::setPlaying(BOOL playing)
+void LLViewerMediaTexture::setPlaying(bool playing)
 {
     if(!mMediaImplp)
     {
@@ -3674,7 +3647,7 @@ void LLViewerMediaTexture::setPlaying(BOOL playing)
         if(findFaces())
         {
             //about to update all faces.
-            mMediaImplp->setUpdated(FALSE);
+            mMediaImplp->setUpdated(false);
         }
 
         if(mMediaFaceList.empty())//no face pointing to this media
@@ -3712,7 +3685,7 @@ F32 LLViewerMediaTexture::getMaxVirtualSize()
 
     if(!mMaxVirtualSizeResetCounter)
     {
-        addTextureStats(0.f, FALSE);//reset
+        addTextureStats(0.f, false);//reset
     }
 
     if(mIsPlaying) //media is playing
@@ -3807,13 +3780,13 @@ void LLTexturePipelineTester::update()
             //start a new fetching session
             reset();
             mStartFetchingTime = LLImageGL::sLastFrameTime;
-            mPause = FALSE;
+            mPause = false;
         }
 
         //update total gray time
         if(mUsingDefaultTexture)
         {
-            mUsingDefaultTexture = FALSE;
+            mUsingDefaultTexture = false;
             mTotalGrayTime = LLImageGL::sLastFrameTime - mStartFetchingTime;
         }
 
@@ -3825,7 +3798,7 @@ void LLTexturePipelineTester::update()
     else if(!mPause)
     {
         //stop the current fetching session
-        mPause = TRUE;
+        mPause = true;
         outputTestResults();
         reset();
     }
@@ -3833,9 +3806,9 @@ void LLTexturePipelineTester::update()
 
 void LLTexturePipelineTester::reset()
 {
-    mPause = TRUE;
+    mPause = true;
 
-    mUsingDefaultTexture = FALSE;
+    mUsingDefaultTexture = false;
     mStartStablizingTime = 0.0f;
     mEndStablizingTime = 0.0f;
 
@@ -3886,7 +3859,7 @@ void LLTexturePipelineTester::updateTextureBindingStats(const LLViewerTexture* i
     }
 }
 
-void LLTexturePipelineTester::updateTextureLoadingStats(const LLViewerFetchedTexture* imagep, const LLImageRaw* raw_imagep, BOOL from_cache)
+void LLTexturePipelineTester::updateTextureLoadingStats(const LLViewerFetchedTexture* imagep, const LLImageRaw* raw_imagep, bool from_cache)
 {
     U32Bytes data_size = (U32Bytes)raw_imagep->getDataSize();
     mTotalBytesLoaded += data_size;
@@ -3915,7 +3888,7 @@ void LLTexturePipelineTester::updateTextureLoadingStats(const LLViewerFetchedTex
 
 void LLTexturePipelineTester::updateGrayTextureBinding()
 {
-    mUsingDefaultTexture = TRUE;
+    mUsingDefaultTexture = true;
 }
 
 void LLTexturePipelineTester::setStablizingTime()
@@ -4042,7 +4015,7 @@ LLMetricPerformanceTesterWithSession::LLTestSession* LLTexturePipelineTester::lo
 
     //load a session
     std::string currentLabel = getCurrentLabelName();
-    BOOL in_log = (*log).has(currentLabel);
+    bool in_log = (*log).has(currentLabel);
     while (in_log)
     {
         LLSD::String label = currentLabel;
diff --git a/indra/newview/llviewertexture.h b/indra/newview/llviewertexture.h
index b1983445a6..dc9182bf1b 100644
--- a/indra/newview/llviewertexture.h
+++ b/indra/newview/llviewertexture.h
@@ -54,7 +54,7 @@ class LLViewerMediaTexture ;
 class LLTexturePipelineTester ;
 
 
-typedef void    (*loaded_callback_func)( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* src_aux, S32 discard_level, BOOL final, void* userdata );
+typedef void    (*loaded_callback_func)( bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* src_aux, S32 discard_level, bool final, void* userdata );
 
 class LLFileSystem;
 class LLMessageSystem;
@@ -70,19 +70,19 @@ public:
 public:
     LLLoadedCallbackEntry(loaded_callback_func cb,
                           S32 discard_level,
-                          BOOL need_imageraw, // Needs image raw for the callback
+                          bool need_imageraw, // Needs image raw for the callback
                           void* userdata,
                           source_callback_list_t* src_callback_list,
                           LLViewerFetchedTexture* target,
-                          BOOL pause);
+                          bool pause);
     ~LLLoadedCallbackEntry();
     void removeTexture(LLViewerFetchedTexture* tex) ;
 
     loaded_callback_func    mCallback;
     S32                     mLastUsedDiscard;
     S32                     mDesiredDiscard;
-    BOOL                    mNeedsImageRaw;
-    BOOL                    mPaused;
+    bool                    mNeedsImageRaw;
+    bool                    mPaused;
     void*                   mUserData;
     source_callback_list_t* mSourceCallbackList;
 
@@ -118,13 +118,13 @@ public:
     static void initClass();
     static void updateClass();
 
-    LLViewerTexture(BOOL usemipmaps = TRUE);
-    LLViewerTexture(const LLUUID& id, BOOL usemipmaps) ;
-    LLViewerTexture(const LLImageRaw* raw, BOOL usemipmaps) ;
-    LLViewerTexture(const U32 width, const U32 height, const U8 components, BOOL usemipmaps) ;
+    LLViewerTexture(bool usemipmaps = true);
+    LLViewerTexture(const LLUUID& id, bool usemipmaps) ;
+    LLViewerTexture(const LLImageRaw* raw, bool usemipmaps) ;
+    LLViewerTexture(const U32 width, const U32 height, const U8 components, bool usemipmaps) ;
 
     virtual S8 getType() const;
-    virtual BOOL isMissingAsset() const ;
+    virtual bool isMissingAsset() const ;
     virtual void dump();    // debug info to LL_INFOS()
 
     virtual bool isViewerMediaTexture() const { return false; }
@@ -140,7 +140,7 @@ public:
     void setTextureListType(S32 tex_type) { mTextureListType = tex_type; }
     S32 getTextureListType() { return mTextureListType; }
 
-    void addTextureStats(F32 virtual_size, BOOL needs_gltexture = TRUE) const;
+    void addTextureStats(F32 virtual_size, bool needs_gltexture = true) const;
     void resetTextureStats();
     void setMaxVirtualSizeResetInterval(S32 interval)const {mMaxVirtualSizeResetInterval = interval;}
     void resetMaxVirtualSizeResetCounter()const {mMaxVirtualSizeResetCounter = mMaxVirtualSizeResetInterval;}
@@ -167,10 +167,10 @@ public:
 
 
     virtual void setCachedRawImage(S32 discard_level, LLImageRaw* imageraw) ;
-    BOOL isLargeImage() ;
+    bool isLargeImage() ;
 
     void setParcelMedia(LLViewerMediaTexture* media) {mParcelMedia = media;}
-    BOOL hasParcelMedia() const { return mParcelMedia != NULL;}
+    bool hasParcelMedia() const { return mParcelMedia != NULL;}
     LLViewerMediaTexture* getParcelMedia() const { return mParcelMedia;}
 
     /*virtual*/ void updateBindStatsForTester() ;
@@ -186,10 +186,6 @@ private:
 
     virtual void switchToCachedImage();
 
-    static void getGPUMemoryForTextures(S32Megabytes &gpu, S32Megabytes &physical);
-
-public:
-    static bool isMemoryForTextureLow();
 protected:
     friend class LLViewerTextureList;
     LLUUID mID;
@@ -228,6 +224,9 @@ public:
     static bool sFreezeImageUpdates;
     static F32  sCurrentTime ;
 
+    // estimated free memory for textures, by bias calculation
+    static F32 sFreeVRAMMegabytes;
+
     enum EDebugTexels
     {
         DEBUG_TEXELS_OFF,
@@ -269,9 +268,9 @@ class LLViewerFetchedTexture : public LLViewerTexture
 protected:
     /*virtual*/ ~LLViewerFetchedTexture();
 public:
-    LLViewerFetchedTexture(const LLUUID& id, FTType f_type, const LLHost& host = LLHost(), BOOL usemipmaps = TRUE);
-    LLViewerFetchedTexture(const LLImageRaw* raw, FTType f_type, BOOL usemipmaps);
-    LLViewerFetchedTexture(const std::string& url, FTType f_type, const LLUUID& id, BOOL usemipmaps = TRUE);
+    LLViewerFetchedTexture(const LLUUID& id, FTType f_type, const LLHost& host = LLHost(), bool usemipmaps = true);
+    LLViewerFetchedTexture(const LLImageRaw* raw, FTType f_type, bool usemipmaps);
+    LLViewerFetchedTexture(const std::string& url, FTType f_type, const LLUUID& id, bool usemipmaps = true);
 
 public:
 
@@ -303,9 +302,9 @@ public:
     // Set callbacks to get called when the image gets updated with higher
     // resolution versions.
     void setLoadedCallback(loaded_callback_func cb,
-                           S32 discard_level, BOOL keep_imageraw, BOOL needs_aux,
-                           void* userdata, LLLoadedCallbackEntry::source_callback_list_t* src_callback_list, BOOL pause = FALSE);
-    bool hasCallbacks() { return mLoadedCallbackList.empty() ? false : true; }
+                           S32 discard_level, bool keep_imageraw, bool needs_aux,
+                           void* userdata, LLLoadedCallbackEntry::source_callback_list_t* src_callback_list, bool pause = false);
+    bool hasCallbacks() { return !mLoadedCallbackList.empty(); }
     void pauseLoadedCallbacks(const LLLoadedCallbackEntry::source_callback_list_t* callback_list);
     void unpauseLoadedCallbacks(const LLLoadedCallbackEntry::source_callback_list_t* callback_list);
     bool doLoadedCallbacks();
@@ -315,9 +314,9 @@ public:
     void addToCreateTexture();
 
     //call to determine if createTexture is necessary
-    BOOL preCreateTexture(S32 usename = 0);
+    bool preCreateTexture(S32 usename = 0);
      // ONLY call from LLViewerTextureList or ImageGL background thread
-    BOOL createTexture(S32 usename = 0);
+    bool createTexture(S32 usename = 0);
     void postCreateTexture();
     void scheduleCreateTexture();
 
@@ -325,7 +324,7 @@ public:
 
     virtual void processTextureStats() ;
 
-    BOOL needsAux() const { return mNeedsAux; }
+    bool needsAux() const { return mNeedsAux; }
 
     // Host we think might have this image, used for baked av textures.
     void setTargetHost(LLHost host)         { mTargetHost = host; }
@@ -341,7 +340,7 @@ public:
     bool setDebugFetching(S32 debug_level);
     bool isInDebug() const { return mInDebug; }
 
-    void setUnremovable(BOOL value) { mUnremovable = value; }
+    void setUnremovable(bool value) { mUnremovable = value; }
     bool isUnremovable() const { return mUnremovable; }
 
     void clearFetchedResults(); //clear all fetched results, for debug use.
@@ -355,16 +354,16 @@ public:
     // to the specified text
     void setDebugText(const std::string& text);
 
-    void setIsMissingAsset(BOOL is_missing = true);
-    /*virtual*/ BOOL isMissingAsset() const override { return mIsMissingAsset; }
+    void setIsMissingAsset(bool is_missing = true);
+    /*virtual*/ bool isMissingAsset() const override { return mIsMissingAsset; }
 
     // returns dimensions of original image for local files (before power of two scaling)
     // and returns 0 for all asset system images
     S32 getOriginalWidth() { return mOrigWidth; }
     S32 getOriginalHeight() { return mOrigHeight; }
 
-    BOOL isInImageList() const {return mInImageList ;}
-    void setInImageList(BOOL flag) {mInImageList = flag ;}
+    bool isInImageList() const {return mInImageList ;}
+    void setInImageList(bool flag) {mInImageList = flag ;}
 
     LLFrameTimer* getLastPacketTimer() {return &mLastPacketTimer;}
 
@@ -377,17 +376,17 @@ public:
 
     const std::string& getUrl() const {return mUrl;}
     //---------------
-    BOOL isDeleted() ;
-    BOOL isInactive() ;
-    BOOL isDeletionCandidate();
+    bool isDeleted() ;
+    bool isInactive() ;
+    bool isDeletionCandidate();
     void setDeletionCandidate() ;
     void setInactive() ;
-    BOOL getUseDiscard() const { return mUseMipMaps && !mDontDiscard; }
+    bool getUseDiscard() const { return mUseMipMaps && !mDontDiscard; }
     //---------------
 
     void setForSculpt();
-    BOOL forSculpt() const {return mForSculpt;}
-    BOOL isForSculptOnly() const;
+    bool forSculpt() const {return mForSculpt;}
+    bool isForSculptOnly() const;
 
     //raw image management
     void        checkCachedRawSculptImage() ;
@@ -395,17 +394,17 @@ public:
     S32         getRawImageLevel() const {return mRawDiscardLevel;}
     LLImageRaw* getCachedRawImage() const { return mCachedRawImage ;}
     S32         getCachedRawImageLevel() const {return mCachedRawDiscardLevel;}
-    BOOL        isCachedRawImageReady() const {return mCachedRawImageReady ;}
-    BOOL        isRawImageValid()const { return mIsRawImageValid ; }
+    bool        isCachedRawImageReady() const {return mCachedRawImageReady ;}
+    bool        isRawImageValid()const { return mIsRawImageValid ; }
     void        forceToSaveRawImage(S32 desired_discard = 0, F32 kept_time = 0.f) ;
     /*virtual*/ void setCachedRawImage(S32 discard_level, LLImageRaw* imageraw) override;
     void        destroySavedRawImage() ;
     LLImageRaw* getSavedRawImage() ;
-    BOOL        hasSavedRawImage() const ;
+    bool        hasSavedRawImage() const ;
     F32         getElapsedLastReferencedSavedRawImageTime() const ;
-    BOOL        isFullyLoaded() const;
+    bool        isFullyLoaded() const;
 
-    BOOL        hasFetcher() const { return mHasFetcher;}
+    bool        hasFetcher() const { return mHasFetcher;}
     bool        isFetching() const { return mIsFetching;}
     void        setCanUseHTTP(bool can_use_http) {mCanUseHTTP = can_use_http;}
 
@@ -430,19 +429,17 @@ private:
 
     //for atlas
     void resetFaceAtlas() ;
-    void invalidateAtlas(BOOL rebuild_geom) ;
-    BOOL insertToAtlas() ;
+    void invalidateAtlas(bool rebuild_geom) ;
+    bool insertToAtlas() ;
 
 private:
-    BOOL  mFullyLoaded;
-    BOOL  mInDebug;
-    BOOL  mUnremovable;
-    BOOL  mInFastCacheList;
-    BOOL  mForceCallbackFetch;
+    bool  mFullyLoaded;
+    bool  mInDebug;
+    bool  mUnremovable;
+    bool  mInFastCacheList;
+    bool  mForceCallbackFetch;
 
 protected:
-    std::string mLocalFileName;
-
     S32 mOrigWidth;
     S32 mOrigHeight;
 
@@ -450,7 +447,7 @@ protected:
     // Used for UI textures to not decode, even if we have more data.
     S32 mKnownDrawWidth;
     S32 mKnownDrawHeight;
-    BOOL mKnownDrawSizeChanged ;
+    bool mKnownDrawSizeChanged ;
     std::string mUrl;
 
     S32 mRequestedDiscardLevel;
@@ -465,21 +462,21 @@ protected:
     S8  mDesiredDiscardLevel;           // The discard level we'd LIKE to have - if we have it and there's space
     S8  mMinDesiredDiscardLevel;    // The minimum discard level we'd like to have
 
-    S8  mNeedsAux;                  // We need to decode the auxiliary channels
-    S8  mHasAux;                    // We have aux channels
-    S8  mDecodingAux;               // Are we decoding high components
-    S8  mIsRawImageValid;
-    S8  mHasFetcher;                // We've made a fecth request
-    S8  mIsFetching;                // Fetch request is active
+    bool mNeedsAux;                 // We need to decode the auxiliary channels
+    bool mHasAux;                    // We have aux channels
+    bool mDecodingAux;              // Are we decoding high components
+    bool mIsRawImageValid;
+    bool mHasFetcher;               // We've made a fecth request
+    bool mIsFetching;               // Fetch request is active
     bool mCanUseHTTP;              //This texture can be fetched through http if true.
     LLCore::HttpStatus mLastHttpGetStatus; // Result of the most recently completed http request for this texture.
 
     FTType mFTType; // What category of image is this - map tile, server bake, etc?
-    mutable S8 mIsMissingAsset;     // True if we know that there is no image asset with this image id in the database.
+    mutable bool mIsMissingAsset;       // True if we know that there is no image asset with this image id in the database.
 
     typedef std::list<LLLoadedCallbackEntry*> callback_list_t;
     S8              mLoadedCallbackDesiredDiscardLevel;
-    BOOL            mPauseLoadedCallBacks;
+    bool            mPauseLoadedCallBacks;
     callback_list_t mLoadedCallbackList;
     F32             mLastCallBackActiveTime;
 
@@ -492,8 +489,8 @@ protected:
 
     //keep a copy of mRawImage for some special purposes
     //when mForceToSaveRawImage is set.
-    BOOL mForceToSaveRawImage ;
-    BOOL mSaveRawImage;
+    bool mForceToSaveRawImage ;
+    bool mSaveRawImage;
     LLPointer<LLImageRaw> mSavedRawImage;
     S32 mSavedRawDiscardLevel;
     S32 mDesiredSavedRawDiscardLevel;
@@ -503,7 +500,7 @@ protected:
     //a small version of the copy of the raw image (<= 64 * 64)
     LLPointer<LLImageRaw> mCachedRawImage;
     S32 mCachedRawDiscardLevel;
-    BOOL mCachedRawImageReady; //the rez of the mCachedRawImage reaches the upper limit.
+    bool mCachedRawImageReady; //the rez of the mCachedRawImage reaches the upper limit.
 
     LLHost mTargetHost; // if invalid, just request from agent's simulator
 
@@ -511,13 +508,13 @@ protected:
     LLFrameTimer mLastPacketTimer;      // Time since last packet.
     LLFrameTimer mStopFetchingTimer;    // Time since mDecodePriority == 0.f.
 
-    BOOL  mInImageList;             // TRUE if image is in list (in which case don't reset priority!)
+    bool  mInImageList;             // true if image is in list (in which case don't reset priority!)
     // This needs to be atomic, since it is written both in the main thread
     // and in the GL image worker thread... HB
     LLAtomicBool  mNeedsCreateTexture;
 
-    BOOL   mForSculpt ; //a flag if the texture is used as sculpt data.
-    BOOL   mIsFetched ; //is loaded from remote or from cache, not generated locally.
+    bool   mForSculpt ; //a flag if the texture is used as sculpt data.
+    bool   mIsFetched ; //is loaded from remote or from cache, not generated locally.
 
 public:
     static F32 sMaxVirtualSize; //maximum possible value of mMaxVirtualSize
@@ -542,8 +539,8 @@ protected:
     /*virtual*/ ~LLViewerLODTexture(){}
 
 public:
-    LLViewerLODTexture(const LLUUID& id, FTType f_type, const LLHost& host = LLHost(), BOOL usemipmaps = TRUE);
-    LLViewerLODTexture(const std::string& url, FTType f_type, const LLUUID& id, BOOL usemipmaps = TRUE);
+    LLViewerLODTexture(const LLUUID& id, FTType f_type, const LLHost& host = LLHost(), bool usemipmaps = true);
+    LLViewerLODTexture(const std::string& url, FTType f_type, const LLUUID& id, bool usemipmaps = true);
 
     /*virtual*/ S8 getType() const;
     // Process image stats to determine priority/quality requirements.
@@ -569,16 +566,16 @@ protected:
     /*virtual*/ ~LLViewerMediaTexture() ;
 
 public:
-    LLViewerMediaTexture(const LLUUID& id, BOOL usemipmaps = TRUE, LLImageGL* gl_image = NULL) ;
+    LLViewerMediaTexture(const LLUUID& id, bool usemipmaps = true, LLImageGL* gl_image = NULL) ;
 
     /*virtual*/ S8 getType() const;
-    void reinit(BOOL usemipmaps = TRUE);
+    void reinit(bool usemipmaps = true);
 
-    BOOL  getUseMipMaps() {return mUseMipMaps ; }
-    void  setUseMipMaps(BOOL mipmap) ;
+    bool  getUseMipMaps() {return mUseMipMaps ; }
+    void  setUseMipMaps(bool mipmap) ;
 
-    void setPlaying(BOOL playing) ;
-    BOOL isPlaying() const {return mIsPlaying;}
+    void setPlaying(bool playing) ;
+    bool isPlaying() const {return mIsPlaying;}
     void setMediaImpl() ;
 
     virtual bool isViewerMediaTexture() const { return true; }
@@ -595,7 +592,7 @@ public:
     /*virtual*/ F32  getMaxVirtualSize() ;
 private:
     void switchTexture(U32 ch, LLFace* facep) ;
-    BOOL findFaces() ;
+    bool findFaces() ;
     void stopPlaying() ;
 
 private:
@@ -610,7 +607,7 @@ private:
     std::list< LLPointer<LLViewerTexture> > mTextureList ;
 
     LLViewerMediaImpl* mMediaImplp ;
-    BOOL mIsPlaying ;
+    bool mIsPlaying ;
     U32  mUpdateVirtualSizeTime ;
 
 public:
@@ -637,7 +634,7 @@ public:
     static LLTexturePipelineTester* sTesterp ;
 
     //returns NULL if tex is not a LLViewerFetchedTexture nor derived from LLViewerFetchedTexture.
-    static LLViewerFetchedTexture*    staticCastToFetchedTexture(LLTexture* tex, BOOL report_error = FALSE) ;
+    static LLViewerFetchedTexture*    staticCastToFetchedTexture(LLTexture* tex, bool report_error = false) ;
 
     //
     //"find-texture" just check if the texture exists, if yes, return it, otherwise return null.
@@ -647,23 +644,23 @@ public:
     static LLViewerFetchedTexture*    findFetchedTexture(const LLUUID& id, S32 tex_type);
     static LLViewerMediaTexture*      findMediaTexture(const LLUUID& id) ;
 
-    static LLViewerMediaTexture*      createMediaTexture(const LLUUID& id, BOOL usemipmaps = TRUE, LLImageGL* gl_image = NULL) ;
+    static LLViewerMediaTexture*      createMediaTexture(const LLUUID& id, bool usemipmaps = true, LLImageGL* gl_image = NULL) ;
 
     //
     //"get-texture" will create a new texture if the texture does not exist.
     //
-    static LLViewerMediaTexture*      getMediaTexture(const LLUUID& id, BOOL usemipmaps = TRUE, LLImageGL* gl_image = NULL) ;
+    static LLViewerMediaTexture*      getMediaTexture(const LLUUID& id, bool usemipmaps = true, LLImageGL* gl_image = NULL) ;
 
-    static LLPointer<LLViewerTexture> getLocalTexture(BOOL usemipmaps = TRUE, BOOL generate_gl_tex = TRUE);
-    static LLPointer<LLViewerTexture> getLocalTexture(const LLUUID& id, BOOL usemipmaps, BOOL generate_gl_tex = TRUE) ;
-    static LLPointer<LLViewerTexture> getLocalTexture(const LLImageRaw* raw, BOOL usemipmaps) ;
-    static LLPointer<LLViewerTexture> getLocalTexture(const U32 width, const U32 height, const U8 components, BOOL usemipmaps, BOOL generate_gl_tex = TRUE) ;
+    static LLPointer<LLViewerTexture> getLocalTexture(bool usemipmaps = true, bool generate_gl_tex = true);
+    static LLPointer<LLViewerTexture> getLocalTexture(const LLUUID& id, bool usemipmaps, bool generate_gl_tex = true) ;
+    static LLPointer<LLViewerTexture> getLocalTexture(const LLImageRaw* raw, bool usemipmaps) ;
+    static LLPointer<LLViewerTexture> getLocalTexture(const U32 width, const U32 height, const U8 components, bool usemipmaps, bool generate_gl_tex = true) ;
 
     static LLViewerFetchedTexture* getFetchedTexture(const LLImageRaw* raw, FTType type, bool usemipmaps);
 
     static LLViewerFetchedTexture* getFetchedTexture(const LLUUID &image_id,
                                      FTType f_type = FTT_DEFAULT,
-                                     BOOL usemipmap = TRUE,
+                                     bool usemipmap = true,
                                      LLViewerTexture::EBoostLevel boost_priority = LLGLTexture::BOOST_NONE,     // Get the requested level immediately upon creation.
                                      S8 texture_type = LLViewerTexture::FETCHED_TEXTURE,
                                      LLGLint internal_format = 0,
@@ -673,7 +670,7 @@ public:
 
     static LLViewerFetchedTexture* getFetchedTextureFromFile(const std::string& filename,
                                      FTType f_type = FTT_LOCAL_FILE,
-                                     BOOL usemipmap = TRUE,
+                                     bool usemipmap = true,
                                      LLViewerTexture::EBoostLevel boost_priority = LLGLTexture::BOOST_NONE,
                                      S8 texture_type = LLViewerTexture::FETCHED_TEXTURE,
                                      LLGLint internal_format = 0,
@@ -683,7 +680,7 @@ public:
 
     static LLViewerFetchedTexture* getFetchedTextureFromUrl(const std::string& url,
                                      FTType f_type,
-                                     BOOL usemipmap = TRUE,
+                                     bool usemipmap = true,
                                      LLViewerTexture::EBoostLevel boost_priority = LLGLTexture::BOOST_NONE,
                                      S8 texture_type = LLViewerTexture::FETCHED_TEXTURE,
                                      LLGLint internal_format = 0,
@@ -693,6 +690,14 @@ public:
 
     static LLViewerFetchedTexture* getFetchedTextureFromHost(const LLUUID& image_id, FTType f_type, LLHost host) ;
 
+    // decode a given image data according to given mime type
+    // WARNING: caller is responsible for deleting the returned raw image
+    static LLImageRaw* getRawImageFromMemory(const U8* data, U32 size, std::string_view mimetype);
+
+    // decode given image data according to given mime type
+    // WARNING: caller is responsible for deleting the returned image
+    static LLViewerFetchedTexture* getFetchedTextureFromMemory(const U8* data, U32 size, std::string_view mimetype);
+
     static void init() ;
     static void cleanup() ;
 };
@@ -713,7 +718,7 @@ public:
 
     void update();
     void updateTextureBindingStats(const LLViewerTexture* imagep) ;
-    void updateTextureLoadingStats(const LLViewerFetchedTexture* imagep, const LLImageRaw* raw_imagep, BOOL from_cache) ;
+    void updateTextureLoadingStats(const LLViewerFetchedTexture* imagep, const LLImageRaw* raw_imagep, bool from_cache) ;
     void updateGrayTextureBinding() ;
     void setStablizingTime() ;
 
@@ -724,9 +729,9 @@ private:
     /*virtual*/ void outputTestRecord(LLSD* sd) ;
 
 private:
-    BOOL mPause ;
+    bool mPause ;
 private:
-    BOOL mUsingDefaultTexture;            //if set, some textures are still gray.
+    bool mUsingDefaultTexture;            //if set, some textures are still gray.
 
     U32Bytes mTotalBytesUsed ;                     //total bytes of textures bound/used for the current frame.
     U32Bytes mTotalBytesUsedForLargeImage ;        //total bytes of textures bound/used for the current frame for images larger than 256 * 256.
diff --git a/indra/newview/llviewertextureanim.cpp b/indra/newview/llviewertextureanim.cpp
index 9342eb2865..238e6830ea 100644
--- a/indra/newview/llviewertextureanim.cpp
+++ b/indra/newview/llviewertextureanim.cpp
@@ -43,13 +43,13 @@ LLViewerTextureAnim::LLViewerTextureAnim(LLVOVolume* vobj) : LLTextureAnim()
     mScaleS = mScaleT = 1;
     mRot = 0;
 
-    mInstanceIndex = sInstanceList.size();
+    mInstanceIndex = static_cast<S32>(sInstanceList.size());
     sInstanceList.push_back(this);
 }
 
 LLViewerTextureAnim::~LLViewerTextureAnim()
 {
-    S32 end_idx = sInstanceList.size()-1;
+    S32 end_idx = static_cast<S32>(sInstanceList.size()) - 1;
 
     if (end_idx != mInstanceIndex)
     {
diff --git a/indra/newview/llviewertexturelist.cpp b/indra/newview/llviewertexturelist.cpp
index f8825fe7e1..c812504f9b 100644
--- a/indra/newview/llviewertexturelist.cpp
+++ b/indra/newview/llviewertexturelist.cpp
@@ -91,14 +91,14 @@ LLTextureKey::LLTextureKey(LLUUID id, ETexListType tex_type)
 ///////////////////////////////////////////////////////////////////////////////
 
 LLViewerTextureList::LLViewerTextureList()
-    : mForceResetTextureStats(FALSE),
-    mInitialized(FALSE)
+    : mForceResetTextureStats(false),
+    mInitialized(false)
 {
 }
 
 void LLViewerTextureList::init()
 {
-    mInitialized = TRUE ;
+    mInitialized = true ;
     sNumImages = 0;
     doPreloadImages();
 }
@@ -139,12 +139,12 @@ void LLViewerTextureList::doPreloadImages()
     image_list->initFromFile();
 
     // turn off clamping and bilinear filtering for uv picking images
-    //LLViewerFetchedTexture* uv_test = preloadUIImage("uv_test1.tga", LLUUID::null, FALSE);
-    //uv_test->setClamp(FALSE, FALSE);
-    //uv_test->setMipFilterNearest(TRUE, TRUE);
-    //uv_test = preloadUIImage("uv_test2.tga", LLUUID::null, FALSE);
-    //uv_test->setClamp(FALSE, FALSE);
-    //uv_test->setMipFilterNearest(TRUE, TRUE);
+    //LLViewerFetchedTexture* uv_test = preloadUIImage("uv_test1.tga", LLUUID::null, false);
+    //uv_test->setClamp(false, false);
+    //uv_test->setMipFilterNearest(true, true);
+    //uv_test = preloadUIImage("uv_test2.tga", LLUUID::null, false);
+    //uv_test->setClamp(false, false);
+    //uv_test->setMipFilterNearest(true, true);
 
     LLViewerFetchedTexture* image = LLViewerTextureManager::getFetchedTextureFromFile("silhouette.j2c", FTT_LOCAL_FILE, MIPMAP_YES, LLViewerFetchedTexture::BOOST_UI);
     if (image)
@@ -198,9 +198,9 @@ void LLViewerTextureList::doPreloadImages()
 
     LLPointer<LLImageRaw> img_blak_square_tex(new LLImageRaw(2, 2, 3));
     memset(img_blak_square_tex->getData(), 0, img_blak_square_tex->getDataSize());
-    LLPointer<LLViewerFetchedTexture> img_blak_square(new LLViewerFetchedTexture(img_blak_square_tex, FTT_DEFAULT, FALSE));
+    LLPointer<LLViewerFetchedTexture> img_blak_square(new LLViewerFetchedTexture(img_blak_square_tex, FTT_DEFAULT, false));
     gBlackSquareID = img_blak_square->getID();
-    img_blak_square->setUnremovable(TRUE);
+    img_blak_square->setUnremovable(true);
     addImage(img_blak_square, TEX_LIST_STANDARD);
 }
 
@@ -241,7 +241,7 @@ void LLViewerTextureList::doPrefetchImages()
 
     LLViewerTextureManager::getFetchedTexture(IMG_SHOT);
     LLViewerTextureManager::getFetchedTexture(IMG_SMOKE_POOF);
-    LLViewerFetchedTexture::sSmokeImagep = LLViewerTextureManager::getFetchedTexture(IMG_SMOKE, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
+    LLViewerFetchedTexture::sSmokeImagep = LLViewerTextureManager::getFetchedTexture(IMG_SMOKE, FTT_DEFAULT, true, LLGLTexture::BOOST_UI);
     LLViewerFetchedTexture::sSmokeImagep->setNoDelete();
 
     LLStandardBumpmap::addstandard();
@@ -370,7 +370,7 @@ void LLViewerTextureList::shutdown()
 
     mImageList.clear();
 
-    mInitialized = FALSE ; //prevent loading textures again.
+    mInitialized = false ; //prevent loading textures again.
 }
 
 void LLViewerTextureList::dump()
@@ -391,7 +391,7 @@ void LLViewerTextureList::dump()
     }
 }
 
-void LLViewerTextureList::destroyGL(BOOL save_state)
+void LLViewerTextureList::destroyGL(bool save_state)
 {
     LLImageGL::destroyGL(save_state);
 }
@@ -413,7 +413,7 @@ void LLViewerTextureList::restoreGL()
 
 LLViewerFetchedTexture* LLViewerTextureList::getImageFromFile(const std::string& filename,
                                                    FTType f_type,
-                                                   BOOL usemipmaps,
+                                                   bool usemipmaps,
                                                    LLViewerTexture::EBoostLevel boost_priority,
                                                    S8 texture_type,
                                                    LLGLint internal_format,
@@ -431,7 +431,7 @@ LLViewerFetchedTexture* LLViewerTextureList::getImageFromFile(const std::string&
     {
         LL_WARNS() << "Failed to find local image file: " << filename << LL_ENDL;
         LLViewerTexture::EBoostLevel priority = LLGLTexture::BOOST_UI;
-        return LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT, FTT_DEFAULT, TRUE, priority);
+        return LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT, FTT_DEFAULT, true, priority);
     }
 
     std::string url = "file://" + full_path;
@@ -441,7 +441,7 @@ LLViewerFetchedTexture* LLViewerTextureList::getImageFromFile(const std::string&
 
 LLViewerFetchedTexture* LLViewerTextureList::getImageFromUrl(const std::string& url,
                                                    FTType f_type,
-                                                   BOOL usemipmaps,
+                                                   bool usemipmaps,
                                                    LLViewerTexture::EBoostLevel boost_priority,
                                                    S8 texture_type,
                                                    LLGLint internal_format,
@@ -528,10 +528,43 @@ LLViewerFetchedTexture* LLViewerTextureList::getImageFromUrl(const std::string&
     return imagep;
 }
 
+LLImageRaw* LLViewerTextureList::getRawImageFromMemory(const U8* data, U32 size, std::string_view mimetype)
+{
+    LLPointer<LLImageFormatted> image = LLImageFormatted::loadFromMemory(data, size, mimetype);
+
+    if (image)
+    {
+        LLImageRaw* raw_image = new LLImageRaw();
+        image->decode(raw_image, 0.f);
+        return raw_image;
+    }
+    else
+    {
+        return nullptr;
+    }
+}
+
+LLViewerFetchedTexture* LLViewerTextureList::getImageFromMemory(const U8* data, U32 size, std::string_view mimetype)
+{
+    LLPointer<LLImageRaw> raw_image = getRawImageFromMemory(data, size, mimetype);
+    if (raw_image.notNull())
+    {
+        LLViewerFetchedTexture* imagep = new LLViewerFetchedTexture(raw_image, FTT_LOCAL_FILE, true);
+        addImage(imagep, TEX_LIST_STANDARD);
+
+        imagep->dontDiscard();
+        imagep->setBoostLevel(LLViewerFetchedTexture::BOOST_PREVIEW);
+        return imagep;
+    }
+    else
+    {
+        return nullptr;
+    }
+}
 
 LLViewerFetchedTexture* LLViewerTextureList::getImage(const LLUUID &image_id,
                                                    FTType f_type,
-                                                   BOOL usemipmaps,
+                                                   bool usemipmaps,
                                                    LLViewerTexture::EBoostLevel boost_priority,
                                                    S8 texture_type,
                                                    LLGLint internal_format,
@@ -550,7 +583,7 @@ LLViewerFetchedTexture* LLViewerTextureList::getImage(const LLUUID &image_id,
 
     if (image_id.isNull())
     {
-        return (LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI));
+        return (LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT, FTT_DEFAULT, true, LLGLTexture::BOOST_UI));
     }
 
     LLPointer<LLViewerFetchedTexture> imagep = findImage(image_id, get_element_type(boost_priority));
@@ -588,7 +621,7 @@ LLViewerFetchedTexture* LLViewerTextureList::getImage(const LLUUID &image_id,
 //when this function is called, there is no such texture in the gTextureList with image_id.
 LLViewerFetchedTexture* LLViewerTextureList::createImage(const LLUUID &image_id,
                                                    FTType f_type,
-                                                   BOOL usemipmaps,
+                                                   bool usemipmaps,
                                                    LLViewerTexture::EBoostLevel boost_priority,
                                                    S8 texture_type,
                                                    LLGLint internal_format,
@@ -641,8 +674,8 @@ LLViewerFetchedTexture* LLViewerTextureList::createImage(const LLUUID &image_id,
         imagep->forceActive() ;
     }
 
-    mFastCacheList.insert(imagep);
-    imagep->setInFastCacheList(true);
+        mFastCacheList.insert(imagep);
+        imagep->setInFastCacheList(true);
 
     return imagep ;
 }
@@ -685,12 +718,12 @@ void LLViewerTextureList::addImageToList(LLViewerFetchedTexture *image)
     }
     else
     {
-    if((mImageList.insert(image)).second != true)
-    {
+        if (!(mImageList.insert(image)).second)
+        {
             LL_WARNS() << "Error happens when insert image " << image->getID()  << " into mImageList!" << LL_ENDL ;
+        }
+        image->setInImageList(true);
     }
-    image->setInImageList(TRUE) ;
-}
 }
 
 void LLViewerTextureList::removeImageFromList(LLViewerFetchedTexture *image)
@@ -700,7 +733,7 @@ void LLViewerTextureList::removeImageFromList(LLViewerFetchedTexture *image)
     llassert_always(mInitialized) ;
     llassert(image);
 
-    S32 count = 0;
+    size_t count = 0;
     if (image->isInImageList())
     {
         count = mImageList.erase(image) ;
@@ -740,7 +773,7 @@ void LLViewerTextureList::removeImageFromList(LLViewerFetchedTexture *image)
         }
     }
 
-    image->setInImageList(FALSE) ;
+    image->setInImageList(false) ;
 }
 
 void LLViewerTextureList::addImage(LLViewerFetchedTexture *new_image, ETexListType tex_type)
@@ -798,18 +831,18 @@ void LLViewerTextureList::dirtyImage(LLViewerFetchedTexture *image)
 void LLViewerTextureList::updateImages(F32 max_time)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
-    static BOOL cleared = FALSE;
+    static bool cleared = false;
     if(gTeleportDisplay)
     {
         if(!cleared)
         {
             clearFetchingRequests();
             gPipeline.clearRebuildGroups();
-            cleared = TRUE;
+            cleared = true;
         }
         return;
     }
-    cleared = FALSE;
+    cleared = false;
 
     LLAppViewer::getTextureFetch()->setTextureBandwidth(LLTrace::get_frame_recording().getPeriodMeanPerSec(LLStatViewer::TEXTURE_NETWORK_DATA_RECEIVED).value());
 
@@ -888,7 +921,7 @@ static void touch_texture(LLViewerFetchedTexture* tex, F32 vsize)
     }
 }
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 void LLViewerTextureList::updateImageDecodePriority(LLViewerFetchedTexture* imagep)
 {
@@ -901,12 +934,14 @@ void LLViewerTextureList::updateImageDecodePriority(LLViewerFetchedTexture* imag
     llassert(!gCubeSnapshot);
 
     static LLCachedControl<F32> bias_distance_scale(gSavedSettings, "TextureBiasDistanceScale", 1.f);
+    static LLCachedControl<F32> texture_scale_min(gSavedSettings, "TextureScaleMinAreaFactor", 0.04f);
+    static LLCachedControl<F32> texture_scale_max(gSavedSettings, "TextureScaleMaxAreaFactor", 25.f);
 
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE
     {
         for (U32 i = 0; i < LLRender::NUM_TEXTURE_CHANNELS; ++i)
         {
-            for (U32 fi = 0; fi < imagep->getNumFaces(i); ++fi)
+            for (S32 fi = 0; fi < imagep->getNumFaces(i); ++fi)
             {
                 LLFace* face = (*(imagep->getFaceList(i)))[fi];
 
@@ -914,27 +949,27 @@ void LLViewerTextureList::updateImageDecodePriority(LLViewerFetchedTexture* imag
                 {
                     F32 vsize = face->getPixelArea();
 
-                    // scale desired texture resolution higher or lower depending on texture scale
+                    // Scale desired texture resolution higher or lower depending on texture scale
+                    //
+                    // Minimum usage examples: a 1024x1024 texture with aplhabet, runing string
+                    // shows one letter at a time
+                    //
+                    // Maximum usage examples: huge chunk of terrain repeats texture
                     const LLTextureEntry* te = face->getTextureEntry();
                     F32 min_scale = te ? llmin(fabsf(te->getScaleS()), fabsf(te->getScaleT())) : 1.f;
-                    min_scale = llmax(min_scale*min_scale, 0.1f);
+                    min_scale = llclamp(min_scale*min_scale, texture_scale_min(), texture_scale_max());
 
                     vsize /= min_scale;
-
-//#if LL_DARWIN
-//                    vsize /= 1.f + LLViewerTexture::sDesiredDiscardBias*(1.f+face->getDrawable()->mDistanceWRTCamera*bias_distance_scale);
-//#else
                     vsize /= LLViewerTexture::sDesiredDiscardBias;
                     vsize /= llmax(1.f, (LLViewerTexture::sDesiredDiscardBias-1.f) * (1.f + face->getDrawable()->mDistanceWRTCamera * bias_distance_scale));
 
                     F32 radius;
                     F32 cos_angle_to_view_dir;
-                    BOOL in_frustum = face->calcPixelArea(cos_angle_to_view_dir, radius);
+                    bool in_frustum = face->calcPixelArea(cos_angle_to_view_dir, radius);
                     if (!in_frustum || !face->getDrawable()->isVisible())
                     { // further reduce by discard bias when off screen or occluded
                         vsize /= LLViewerTexture::sDesiredDiscardBias;
                     }
-//#endif
                     // if a GLTF material is present, ignore that face
                     // as far as this texture stats go, but update the GLTF material
                     // stats
@@ -1189,7 +1224,7 @@ void LLViewerTextureList::updateImagesUpdateStats()
             LLViewerFetchedTexture* imagep = *iter++;
             imagep->resetTextureStats();
         }
-        mForceResetTextureStats = FALSE;
+        mForceResetTextureStats = false;
     }
 }
 
@@ -1208,7 +1243,7 @@ void LLViewerTextureList::decodeAllImages(F32 max_time)
     {
         LLViewerFetchedTexture* imagep = *iter++;
         image_list.push_back(imagep);
-        imagep->setInImageList(FALSE) ;
+        imagep->setInImageList(false) ;
     }
 
     llassert_always(image_list.size() == mImageList.size()) ;
@@ -1231,7 +1266,7 @@ void LLViewerTextureList::decodeAllImages(F32 max_time)
     }
     std::shared_ptr<LL::WorkQueue> main_queue = LLImageGLThread::sEnabledTextures ? LL::WorkQueue::getInstance("mainloop") : NULL;
     // Run threads
-    S32 fetch_pending = 0;
+    size_t fetch_pending = 0;
     while (1)
     {
         LLAppViewer::instance()->getTextureCache()->update(1); // unpauses the texture cache thread
@@ -1273,6 +1308,8 @@ bool LLViewerTextureList::createUploadFile(LLPointer<LLImageRaw> raw_image,
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
 
+    LLImageDataSharedLock lock(raw_image);
+
     // make a copy, since convertToUploadFile scales raw image
     LLPointer<LLImageRaw> scale_image = new LLImageRaw(
         raw_image->getData(),
@@ -1316,63 +1353,63 @@ bool LLViewerTextureList::createUploadFile(const std::string& filename,
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     try
     {
-        // Load the image
-        LLPointer<LLImageFormatted> image = LLImageFormatted::createFromType(codec);
-        if (image.isNull())
-        {
-            LL_WARNS() << "Couldn't open the image to be uploaded." << LL_ENDL;
-            return false;
-        }
-        if (!image->load(filename))
-        {
-            image->setLastError("Couldn't load the image to be uploaded.");
-            return false;
-        }
-        // Decompress or expand it in a raw image structure
-        LLPointer<LLImageRaw> raw_image = new LLImageRaw;
-        if (!image->decode(raw_image, 0.0f))
-        {
-            image->setLastError("Couldn't decode the image to be uploaded.");
-            return false;
-        }
-        // Check the image constraints
-        if ((image->getComponents() != 3) && (image->getComponents() != 4))
-        {
-            image->setLastError("Image files with less than 3 or more than 4 components are not supported.");
-            return false;
-        }
-        if (image->getWidth() < min_image_dimentions || image->getHeight() < min_image_dimentions)
-        {
-            std::string reason = llformat("Images below %d x %d pixels are not allowed. Actual size: %d x %dpx",
-                                          min_image_dimentions,
-                                          min_image_dimentions,
-                                          image->getWidth(),
-                                          image->getHeight());
-            image->setLastError(reason);
-            return false;
-        }
-        // Convert to j2c (JPEG2000) and save the file locally
-        LLPointer<LLImageJ2C> compressedImage = convertToUploadFile(raw_image, max_image_dimentions, force_square);
-        if (compressedImage.isNull())
-        {
-            image->setLastError("Couldn't convert the image to jpeg2000.");
-            LL_INFOS() << "Couldn't convert to j2c, file : " << filename << LL_ENDL;
-            return false;
-        }
-        if (!compressedImage->save(out_filename))
-        {
-            image->setLastError("Couldn't create the jpeg2000 image for upload.");
-            LL_INFOS() << "Couldn't create output file : " << out_filename << LL_ENDL;
-            return false;
-        }
-        // Test to see if the encode and save worked
-        LLPointer<LLImageJ2C> integrity_test = new LLImageJ2C;
-        if (!integrity_test->loadAndValidate(out_filename))
-        {
-            image->setLastError("The created jpeg2000 image is corrupt.");
-            LL_INFOS() << "Image file : " << out_filename << " is corrupt" << LL_ENDL;
-            return false;
-        }
+    // Load the image
+    LLPointer<LLImageFormatted> image = LLImageFormatted::createFromType(codec);
+    if (image.isNull())
+    {
+        LL_WARNS() << "Couldn't open the image to be uploaded." << LL_ENDL;
+        return false;
+    }
+    if (!image->load(filename))
+    {
+        image->setLastError("Couldn't load the image to be uploaded.");
+        return false;
+    }
+    // Decompress or expand it in a raw image structure
+    LLPointer<LLImageRaw> raw_image = new LLImageRaw;
+    if (!image->decode(raw_image, 0.0f))
+    {
+        image->setLastError("Couldn't decode the image to be uploaded.");
+        return false;
+    }
+    // Check the image constraints
+    if ((image->getComponents() != 3) && (image->getComponents() != 4))
+    {
+        image->setLastError("Image files with less than 3 or more than 4 components are not supported.");
+        return false;
+    }
+    if (image->getWidth() < min_image_dimentions || image->getHeight() < min_image_dimentions)
+    {
+        std::string reason = llformat("Images below %d x %d pixels are not allowed. Actual size: %d x %dpx",
+            min_image_dimentions,
+            min_image_dimentions,
+            image->getWidth(),
+            image->getHeight());
+        image->setLastError(reason);
+        return false;
+    }
+    // Convert to j2c (JPEG2000) and save the file locally
+    LLPointer<LLImageJ2C> compressedImage = convertToUploadFile(raw_image, max_image_dimentions, force_square);
+    if (compressedImage.isNull())
+    {
+        image->setLastError("Couldn't convert the image to jpeg2000.");
+        LL_INFOS() << "Couldn't convert to j2c, file : " << filename << LL_ENDL;
+        return false;
+    }
+    if (!compressedImage->save(out_filename))
+    {
+        image->setLastError("Couldn't create the jpeg2000 image for upload.");
+        LL_INFOS() << "Couldn't create output file : " << out_filename << LL_ENDL;
+        return false;
+    }
+    // Test to see if the encode and save worked
+    LLPointer<LLImageJ2C> integrity_test = new LLImageJ2C;
+    if (!integrity_test->loadAndValidate( out_filename ))
+    {
+        image->setLastError("The created jpeg2000 image is corrupt.");
+        LL_INFOS() << "Image file : " << out_filename << " is corrupt" << LL_ENDL;
+        return false;
+    }
     }
     catch (...)
     {
@@ -1386,6 +1423,8 @@ bool LLViewerTextureList::createUploadFile(const std::string& filename,
 LLPointer<LLImageJ2C> LLViewerTextureList::convertToUploadFile(LLPointer<LLImageRaw> raw_image, const S32 max_image_dimentions, bool force_square, bool force_lossless)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
+    LLImageDataLock lock(raw_image);
+
     if (force_square)
     {
         S32 biggest_side = llmax(raw_image->getWidth(), raw_image->getHeight());
@@ -1403,7 +1442,7 @@ LLPointer<LLImageJ2C> LLViewerTextureList::convertToUploadFile(LLPointer<LLImage
         (gSavedSettings.getBOOL("LosslessJ2CUpload") &&
             (raw_image->getWidth() * raw_image->getHeight() <= LL_IMAGE_REZ_LOSSLESS_CUTOFF * LL_IMAGE_REZ_LOSSLESS_CUTOFF)))
     {
-        compressedImage->setReversible(TRUE);
+        compressedImage->setReversible(true);
     }
 
 
@@ -1479,7 +1518,7 @@ LLUIImagePtr LLUIImageList::getUIImageByID(const LLUUID& image_id, S32 priority)
         return found_it->second;
     }
 
-    const BOOL use_mips = FALSE;
+    const bool use_mips = false;
     const LLRect scale_rect = LLRect::null;
     const LLRect clip_rect = LLRect::null;
     return loadUIImageByID(image_id, use_mips, scale_rect, clip_rect, (LLViewerTexture::EBoostLevel)priority);
@@ -1495,14 +1534,14 @@ LLUIImagePtr LLUIImageList::getUIImage(const std::string& image_name, S32 priori
         return found_it->second;
     }
 
-    const BOOL use_mips = FALSE;
+    const bool use_mips = false;
     const LLRect scale_rect = LLRect::null;
     const LLRect clip_rect = LLRect::null;
     return loadUIImageByName(image_name, image_name, use_mips, scale_rect, clip_rect, (LLViewerTexture::EBoostLevel)priority);
 }
 
 LLUIImagePtr LLUIImageList::loadUIImageByName(const std::string& name, const std::string& filename,
-                                              BOOL use_mips, const LLRect& scale_rect, const LLRect& clip_rect, LLViewerTexture::EBoostLevel boost_priority,
+                                              bool use_mips, const LLRect& scale_rect, const LLRect& clip_rect, LLViewerTexture::EBoostLevel boost_priority,
                                               LLUIImage::EScaleStyle scale_style)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
@@ -1515,7 +1554,7 @@ LLUIImagePtr LLUIImageList::loadUIImageByName(const std::string& name, const std
 }
 
 LLUIImagePtr LLUIImageList::loadUIImageByID(const LLUUID& id,
-                                            BOOL use_mips, const LLRect& scale_rect, const LLRect& clip_rect, LLViewerTexture::EBoostLevel boost_priority,
+                                            bool use_mips, const LLRect& scale_rect, const LLRect& clip_rect, LLViewerTexture::EBoostLevel boost_priority,
                                             LLUIImage::EScaleStyle scale_style)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
@@ -1527,7 +1566,7 @@ LLUIImagePtr LLUIImageList::loadUIImageByID(const LLUUID& id,
     return loadUIImage(imagep, id.asString(), use_mips, scale_rect, clip_rect, scale_style);
 }
 
-LLUIImagePtr LLUIImageList::loadUIImage(LLViewerFetchedTexture* imagep, const std::string& name, BOOL use_mips, const LLRect& scale_rect, const LLRect& clip_rect,
+LLUIImagePtr LLUIImageList::loadUIImage(LLViewerFetchedTexture* imagep, const std::string& name, bool use_mips, const LLRect& scale_rect, const LLRect& clip_rect,
                                         LLUIImage::EScaleStyle scale_style)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
@@ -1562,12 +1601,12 @@ LLUIImagePtr LLUIImageList::loadUIImage(LLViewerFetchedTexture* imagep, const st
         datap->mImageScaleRegion = scale_rect;
         datap->mImageClipRegion = clip_rect;
 
-        imagep->setLoadedCallback(onUIImageLoaded, 0, FALSE, FALSE, datap, NULL);
+        imagep->setLoadedCallback(onUIImageLoaded, 0, false, false, datap, NULL);
     }
     return new_imagep;
 }
 
-LLUIImagePtr LLUIImageList::preloadUIImage(const std::string& name, const std::string& filename, BOOL use_mips, const LLRect& scale_rect, const LLRect& clip_rect, LLUIImage::EScaleStyle scale_style)
+LLUIImagePtr LLUIImageList::preloadUIImage(const std::string& name, const std::string& filename, bool use_mips, const LLRect& scale_rect, const LLRect& clip_rect, LLUIImage::EScaleStyle scale_style)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     // look for existing image
@@ -1582,7 +1621,7 @@ LLUIImagePtr LLUIImageList::preloadUIImage(const std::string& name, const std::s
 }
 
 //static
-void LLUIImageList::onUIImageLoaded( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* src_aux, S32 discard_level, BOOL final, void* user_data )
+void LLUIImageList::onUIImageLoaded( bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* src_aux, S32 discard_level, bool final, void* user_data )
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE;
     if(!success || !user_data)
diff --git a/indra/newview/llviewertexturelist.h b/indra/newview/llviewertexturelist.h
index 5a38eddfd3..e4ebb7b0e8 100644
--- a/indra/newview/llviewertexturelist.h
+++ b/indra/newview/llviewertexturelist.h
@@ -38,25 +38,25 @@
 
 const U32 LL_IMAGE_REZ_LOSSLESS_CUTOFF = 128;
 
-const BOOL MIPMAP_YES = TRUE;
-const BOOL MIPMAP_NO = FALSE;
+const bool MIPMAP_YES = true;
+const bool MIPMAP_NO = false;
 
-const BOOL GL_TEXTURE_YES = TRUE;
-const BOOL GL_TEXTURE_NO = FALSE;
+const bool GL_TEXTURE_YES = true;
+const bool GL_TEXTURE_NO = false;
 
-const BOOL IMMEDIATE_YES = TRUE;
-const BOOL IMMEDIATE_NO = FALSE;
+const bool IMMEDIATE_YES = true;
+const bool IMMEDIATE_NO = false;
 
 class LLImageJ2C;
 class LLMessageSystem;
 class LLTextureView;
 
-typedef void (*LLImageCallback)(BOOL success,
+typedef void (*LLImageCallback)(bool success,
                                 LLViewerFetchedTexture *src_vi,
                                 LLImageRaw* src,
                                 LLImageRaw* src_aux,
                                 S32 discard_level,
-                                BOOL final,
+                                bool final,
                                 void* userdata);
 
 enum ETexListType
@@ -115,9 +115,9 @@ public:
     void init();
     void shutdown();
     void dump();
-    void destroyGL(BOOL save_state = TRUE);
+    void destroyGL(bool save_state = true);
     void restoreGL();
-    BOOL isInitialized() const {return mInitialized;}
+    bool isInitialized() const {return mInitialized;}
 
     void findTexturesByID(const LLUUID &image_id, std::vector<LLViewerFetchedTexture*> &output);
     LLViewerFetchedTexture *findImage(const LLUUID &image_id, ETexListType tex_type);
@@ -134,7 +134,7 @@ public:
 
     void handleIRCallback(void **data, const S32 number);
 
-    S32 getNumImages()                  { return mImageList.size(); }
+    S32 getNumImages()                  { return static_cast<S32>(mImageList.size()); }
 
     // Local UI images
     // Local UI images
@@ -164,7 +164,7 @@ private:
 
     LLViewerFetchedTexture * getImage(const LLUUID &image_id,
                                      FTType f_type = FTT_DEFAULT,
-                                     BOOL usemipmap = TRUE,
+                                     bool usemipmap = true,
                                      LLViewerTexture::EBoostLevel boost_priority = LLGLTexture::BOOST_NONE,     // Get the requested level immediately upon creation.
                                      S8 texture_type = LLViewerTexture::FETCHED_TEXTURE,
                                      LLGLint internal_format = 0,
@@ -174,7 +174,7 @@ private:
 
     LLViewerFetchedTexture * getImageFromFile(const std::string& filename,
                                      FTType f_type = FTT_LOCAL_FILE,
-                                     BOOL usemipmap = TRUE,
+                                     bool usemipmap = true,
                                      LLViewerTexture::EBoostLevel boost_priority = LLGLTexture::BOOST_NONE,     // Get the requested level immediately upon creation.
                                      S8 texture_type = LLViewerTexture::FETCHED_TEXTURE,
                                      LLGLint internal_format = 0,
@@ -184,7 +184,7 @@ private:
 
     LLViewerFetchedTexture* getImageFromUrl(const std::string& url,
                                      FTType f_type,
-                                     BOOL usemipmap = TRUE,
+                                     bool usemipmap = true,
                                      LLViewerTexture::EBoostLevel boost_priority = LLGLTexture::BOOST_NONE,     // Get the requested level immediately upon creation.
                                      S8 texture_type = LLViewerTexture::FETCHED_TEXTURE,
                                      LLGLint internal_format = 0,
@@ -192,9 +192,12 @@ private:
                                      const LLUUID& force_id = LLUUID::null
                                      );
 
+    LLImageRaw* getRawImageFromMemory(const U8* data, U32 size, std::string_view mimetype);
+    LLViewerFetchedTexture* getImageFromMemory(const U8* data, U32 size, std::string_view mimetype);
+
     LLViewerFetchedTexture* createImage(const LLUUID &image_id,
                                      FTType f_type,
-                                     BOOL usemipmap = TRUE,
+                                     bool usemipmap = true,
                                      LLViewerTexture::EBoostLevel boost_priority = LLGLTexture::BOOST_NONE,     // Get the requested level immediately upon creation.
                                      S8 texture_type = LLViewerTexture::FETCHED_TEXTURE,
                                      LLGLint internal_format = 0,
@@ -205,7 +208,7 @@ private:
     // Request image from a specific host, used for baked avatar textures.
     // Implemented in header in case someone changes default params above. JC
     LLViewerFetchedTexture* getImageFromHost(const LLUUID& image_id, FTType f_type, LLHost host)
-    { return getImage(image_id, f_type, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, host); }
+    { return getImage(image_id, f_type, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, host); }
 
 public:
     typedef std::set<LLPointer<LLViewerFetchedTexture> > image_list_t;
@@ -217,7 +220,7 @@ public:
     // Note: just raw pointers because they are never referenced, just compared against
     std::set<LLViewerFetchedTexture*> mDirtyTextureList;
 
-    BOOL mForceResetTextureStats;
+    bool mForceResetTextureStats;
 
 private:
     typedef std::map< LLTextureKey, LLPointer<LLViewerFetchedTexture> > uuid_map_t;
@@ -230,7 +233,7 @@ private:
     // simply holds on to LLViewerFetchedTexture references to stop them from being purged too soon
     std::set<LLPointer<LLViewerFetchedTexture> > mImagePreloads;
 
-    BOOL mInitialized ;
+    bool mInitialized ;
     LLFrameTimer mForceDecodeTimer;
 
 private:
@@ -250,22 +253,22 @@ public:
 
     bool initFromFile();
 
-    LLPointer<LLUIImage> preloadUIImage(const std::string& name, const std::string& filename, BOOL use_mips, const LLRect& scale_rect, const LLRect& clip_rect, LLUIImage::EScaleStyle stype);
+    LLPointer<LLUIImage> preloadUIImage(const std::string& name, const std::string& filename, bool use_mips, const LLRect& scale_rect, const LLRect& clip_rect, LLUIImage::EScaleStyle stype);
 
-    static void onUIImageLoaded( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* src_aux, S32 discard_level, BOOL final, void* userdata );
+    static void onUIImageLoaded( bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* src_aux, S32 discard_level, bool final, void* userdata );
 private:
     LLPointer<LLUIImage> loadUIImageByName(const std::string& name, const std::string& filename,
-                                   BOOL use_mips = FALSE, const LLRect& scale_rect = LLRect::null,
+                                   bool use_mips = false, const LLRect& scale_rect = LLRect::null,
                                    const LLRect& clip_rect = LLRect::null,
                                    LLViewerTexture::EBoostLevel boost_priority = LLGLTexture::BOOST_UI,
                                    LLUIImage::EScaleStyle = LLUIImage::SCALE_INNER);
     LLPointer<LLUIImage> loadUIImageByID(const LLUUID& id,
-                                 BOOL use_mips = FALSE, const LLRect& scale_rect = LLRect::null,
+                                 bool use_mips = false, const LLRect& scale_rect = LLRect::null,
                                  const LLRect& clip_rect = LLRect::null,
                                  LLViewerTexture::EBoostLevel boost_priority = LLGLTexture::BOOST_UI,
                                  LLUIImage::EScaleStyle = LLUIImage::SCALE_INNER);
 
-    LLPointer<LLUIImage> loadUIImage(LLViewerFetchedTexture* imagep, const std::string& name, BOOL use_mips = FALSE, const LLRect& scale_rect = LLRect::null, const LLRect& clip_rect = LLRect::null, LLUIImage::EScaleStyle = LLUIImage::SCALE_INNER);
+    LLPointer<LLUIImage> loadUIImage(LLViewerFetchedTexture* imagep, const std::string& name, bool use_mips = false, const LLRect& scale_rect = LLRect::null, const LLRect& clip_rect = LLRect::null, LLUIImage::EScaleStyle = LLUIImage::SCALE_INNER);
 
 
     struct LLUIImageLoadData
@@ -284,10 +287,10 @@ private:
     std::list< LLPointer<LLViewerFetchedTexture> > mUITextureList ;
 };
 
-const BOOL GLTEXTURE_TRUE = TRUE;
-const BOOL GLTEXTURE_FALSE = FALSE;
-const BOOL MIPMAP_TRUE = TRUE;
-const BOOL MIPMAP_FALSE = FALSE;
+const bool GLTEXTURE_TRUE = true;
+const bool GLTEXTURE_FALSE = false;
+const bool MIPMAP_TRUE = true;
+const bool MIPMAP_FALSE = false;
 
 extern LLViewerTextureList gTextureList;
 
diff --git a/indra/newview/llviewerthrottle.cpp b/indra/newview/llviewerthrottle.cpp
index 8482bc603b..b0a00c29a4 100644
--- a/indra/newview/llviewerthrottle.cpp
+++ b/indra/newview/llviewerthrottle.cpp
@@ -207,7 +207,7 @@ LLViewerThrottle::LLViewerThrottle() :
 }
 
 
-void LLViewerThrottle::setMaxBandwidth(F32 kbits_per_second, BOOL from_event)
+void LLViewerThrottle::setMaxBandwidth(F32 kbits_per_second, bool from_event)
 {
     if (!from_event)
     {
@@ -246,9 +246,9 @@ LLViewerThrottleGroup LLViewerThrottle::getThrottleGroup(const F32 bandwidth_kbp
     //Clamp the bandwidth users can set.
     F32 set_bandwidth = llclamp(bandwidth_kbps, MIN_BANDWIDTH, MAX_BANDWIDTH);
 
-    S32 count = mPresets.size();
+    auto count = mPresets.size();
 
-    S32 i;
+    size_t i;
     for (i = 0; i < count; i++)
     {
         if (mPresets[i].getTotal() > set_bandwidth)
diff --git a/indra/newview/llviewerthrottle.h b/indra/newview/llviewerthrottle.h
index 5a690139e9..28a24d04fc 100644
--- a/indra/newview/llviewerthrottle.h
+++ b/indra/newview/llviewerthrottle.h
@@ -58,7 +58,7 @@ class LLViewerThrottle
 public:
     LLViewerThrottle();
 
-    void setMaxBandwidth(F32 kbits_per_second, BOOL from_event = FALSE);
+    void setMaxBandwidth(F32 kbits_per_second, bool from_event = false);
 
     void load();
     void save() const;
diff --git a/indra/newview/llviewerwearable.cpp b/indra/newview/llviewerwearable.cpp
index bf87d52d19..583fb25330 100644
--- a/indra/newview/llviewerwearable.cpp
+++ b/indra/newview/llviewerwearable.cpp
@@ -74,7 +74,7 @@ static std::string asset_id_to_filename(const LLUUID &asset_id, const ELLPath di
 
 LLViewerWearable::LLViewerWearable(const LLTransactionID& transaction_id) :
     LLWearable(),
-    mVolatile(FALSE)
+    mVolatile(false)
 {
     mTransactionID = transaction_id;
     mAssetID = mTransactionID.makeAssetID(gAgent.getSecureSessionID());
@@ -82,7 +82,7 @@ LLViewerWearable::LLViewerWearable(const LLTransactionID& transaction_id) :
 
 LLViewerWearable::LLViewerWearable(const LLAssetID& asset_id) :
     LLWearable(),
-    mVolatile(FALSE)
+    mVolatile(false)
 {
     mAssetID = asset_id;
     mTransactionID.setNull();
@@ -128,7 +128,7 @@ LLWearable::EImportResult LLViewerWearable::importStream( std::istream& input_st
         LLViewerFetchedTexture* image = LLViewerTextureManager::getFetchedTexture( textureid );
         if(gSavedSettings.getBOOL("DebugAvatarLocalTexLoadedTime"))
         {
-            image->setLoadedCallback(LLVOAvatarSelf::debugOnTimingLocalTexLoaded,0,TRUE,FALSE, new LLVOAvatarSelf::LLAvatarTexData(textureid, (LLAvatarAppearanceDefines::ETextureIndex)te), NULL);
+            image->setLoadedCallback(LLVOAvatarSelf::debugOnTimingLocalTexLoaded,0,true,false, new LLVOAvatarSelf::LLAvatarTexData(textureid, (LLAvatarAppearanceDefines::ETextureIndex)te), NULL);
         }
     }
 
@@ -139,9 +139,9 @@ LLWearable::EImportResult LLViewerWearable::importStream( std::istream& input_st
 // Avatar parameter and texture definitions can change over time.
 // This function returns true if parameters or textures have been added or removed
 // since this wearable was created.
-BOOL LLViewerWearable::isOldVersion() const
+bool LLViewerWearable::isOldVersion() const
 {
-    if (!isAgentAvatarValid()) return FALSE;
+    if (!isAgentAvatarValid()) return false;
 
     if( LLWearable::sCurrentDefinitionVersion < mDefinitionVersion )
     {
@@ -151,7 +151,7 @@ BOOL LLViewerWearable::isOldVersion() const
 
     if( LLWearable::sCurrentDefinitionVersion != mDefinitionVersion )
     {
-        return TRUE;
+        return true;
     }
 
     S32 param_count = 0;
@@ -164,13 +164,13 @@ BOOL LLViewerWearable::isOldVersion() const
             param_count++;
             if( !is_in_map(mVisualParamIndexMap, param->getID() ) )
             {
-                return TRUE;
+                return true;
             }
         }
     }
     if( param_count != mVisualParamIndexMap.size() )
     {
-        return TRUE;
+        return true;
     }
 
 
@@ -182,16 +182,16 @@ BOOL LLViewerWearable::isOldVersion() const
             te_count++;
             if( !is_in_map(mTEMap, te ) )
             {
-                return TRUE;
+                return true;
             }
         }
     }
     if( te_count != mTEMap.size() )
     {
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 // Avatar parameter and texture definitions can change over time.
@@ -201,9 +201,9 @@ BOOL LLViewerWearable::isOldVersion() const
 // * If parameters or textures have been ADDED since the wearable was created,
 // they are taken to have default values, so we consider the wearable clean
 // only if those values are the same as the defaults.
-BOOL LLViewerWearable::isDirty() const
+bool LLViewerWearable::isDirty() const
 {
-    if (!isAgentAvatarValid()) return FALSE;
+    if (!isAgentAvatarValid()) return false;
 
     for( LLViewerVisualParam* param = (LLViewerVisualParam*) gAgentAvatarp->getFirstVisualParam();
         param;
@@ -222,7 +222,7 @@ BOOL LLViewerWearable::isDirty() const
             U8 b = F32_to_U8( current_weight, param->getMinWeight(), param->getMaxWeight() );
             if( a != b  )
             {
-                return TRUE;
+                return true;
             }
         }
     }
@@ -242,19 +242,19 @@ BOOL LLViewerWearable::isDirty() const
                     if (saved_image_id != current_image_id)
                     {
                         // saved vs current images are different, wearable is dirty
-                        return TRUE;
+                        return true;
                     }
                 }
                 else
                 {
                     // image found in current image list but not saved image list
-                    return TRUE;
+                    return true;
                 }
             }
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 
@@ -342,7 +342,7 @@ void LLViewerWearable::writeToAvatar(LLAvatarAppearance *avatarp)
             {
                 image_id = getDefaultTextureImageID((ETextureIndex) te);
             }
-            LLViewerTexture* image = LLViewerTextureManager::getFetchedTexture( image_id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE );
+            LLViewerTexture* image = LLViewerTextureManager::getFetchedTexture( image_id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE );
             // MULTI-WEARABLE: assume index 0 will be used when writing to avatar. TODO: eliminate the need for this.
             viewer_avatar->setLocalTextureTE(te, image, 0);
         }
diff --git a/indra/newview/llviewerwearable.h b/indra/newview/llviewerwearable.h
index 15feab0a57..233c65aefb 100644
--- a/indra/newview/llviewerwearable.h
+++ b/indra/newview/llviewerwearable.h
@@ -58,8 +58,8 @@ public:
 
 public:
 
-    BOOL                isDirty() const;
-    BOOL                isOldVersion() const;
+    bool                isDirty() const;
+    bool                isOldVersion() const;
 
     /*virtual*/ void    writeToAvatar(LLAvatarAppearance *avatarp);
     void                removeFromAvatar()  { LLViewerWearable::removeFromAvatar( mType); }
@@ -69,8 +69,8 @@ public:
 
     void                setParamsToDefaults();
     void                setTexturesToDefaults();
-    void                setVolatile(BOOL is_volatile) { mVolatile = is_volatile; } // TRUE when doing preview renders, some updates will be suppressed.
-    BOOL                getVolatile() { return mVolatile; }
+    void                setVolatile(bool is_volatile) { mVolatile = is_volatile; } // true when doing preview renders, some updates will be suppressed.
+    bool                getVolatile() { return mVolatile; }
 
     /*virtual*/ LLUUID  getDefaultTextureImageID(LLAvatarAppearanceDefines::ETextureIndex index) const;
 
@@ -98,7 +98,7 @@ protected:
     LLAssetID           mAssetID;
     LLTransactionID     mTransactionID;
 
-    BOOL                mVolatile; // True when rendering preview images. Can suppress some updates.
+    bool                mVolatile; // True when rendering preview images. Can suppress some updates.
 
     LLUUID              mItemID;  // ID of the inventory item in the agent's inventory
 };
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index e7caf777f5..f842e1f74c 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -224,19 +224,19 @@
 void render_ui(F32 zoom_factor = 1.f, int subfield = 0);
 void swap();
 
-extern BOOL gDebugClicks;
-extern BOOL gDisplaySwapBuffers;
-extern BOOL gDepthDirty;
-extern BOOL gResizeScreenTexture;
-extern BOOL gCubeSnapshot;
-extern BOOL gSnapshotNoPost;
+extern bool gDebugClicks;
+extern bool gDisplaySwapBuffers;
+extern bool gDepthDirty;
+extern bool gResizeScreenTexture;
+extern bool gCubeSnapshot;
+extern bool gSnapshotNoPost;
 
 LLViewerWindow  *gViewerWindow = NULL;
 
 LLFrameTimer    gAwayTimer;
 LLFrameTimer    gAwayTriggerTimer;
 
-BOOL            gShowOverlayTitle = FALSE;
+bool            gShowOverlayTitle = false;
 
 LLViewerObject*  gDebugRaycastObject = NULL;
 LLVOPartGroup* gDebugRaycastParticle = NULL;
@@ -252,13 +252,13 @@ LLVector4a       gDebugRaycastStart;
 LLVector4a       gDebugRaycastEnd;
 
 // HUD display lines in lower right
-BOOL                gDisplayWindInfo = FALSE;
-BOOL                gDisplayCameraPos = FALSE;
-BOOL                gDisplayFOV = FALSE;
-BOOL                gDisplayBadge = FALSE;
+bool                gDisplayWindInfo = false;
+bool                gDisplayCameraPos = false;
+bool                gDisplayFOV = false;
+bool                gDisplayBadge = false;
 
 static const U8 NO_FACE = 255;
-BOOL gQuietSnapshot = FALSE;
+bool gQuietSnapshot = false;
 
 // Minimum value for UIScaleFactor, also defined in preferences, ui_scale_slider
 static const F32 MIN_UI_SCALE = 0.75f;
@@ -293,7 +293,7 @@ public:
             //  chat.mText = message;
             //  chat.mSourceType = CHAT_SOURCE_SYSTEM;
 
-            //  chat_floater->addChat(chat, FALSE, FALSE);
+            //  chat_floater->addChat(chat, false, false);
             //}
         //}
     }
@@ -618,7 +618,7 @@ public:
                     LLViewerRegion* region = gAgent.getRegion();
                     if (region)
                     {
-                        for (U32 i = 0; i < gObjectList.getNumObjects(); ++i)
+                        for (S32 i = 0; i < gObjectList.getNumObjects(); ++i)
                         {
                             LLViewerObject* object = gObjectList.getObject(i);
                             if (object &&
@@ -998,7 +998,7 @@ void LLViewerWindow::handlePieMenu(S32 x, S32 y, MASK mask)
     }
 }
 
-BOOL LLViewerWindow::handleAnyMouseClick(LLWindow *window, LLCoordGL pos, MASK mask, EMouseClickType clicktype, BOOL down, bool& is_toolmgr_action)
+bool LLViewerWindow::handleAnyMouseClick(LLWindow *window, LLCoordGL pos, MASK mask, EMouseClickType clicktype, bool down, bool& is_toolmgr_action)
 {
     const char* buttonname = "";
     const char* buttonstatestr = "";
@@ -1090,7 +1090,7 @@ BOOL LLViewerWindow::handleAnyMouseClick(LLWindow *window, LLCoordGL pos, MASK m
                 LL_INFOS() << buttonname << " Mouse " << buttonstatestr << " handled by captor " << mouse_captor->getName() << LL_ENDL;
             }
 
-            BOOL r = mouse_captor->handleAnyMouseClick(local_x, local_y, mask, clicktype, down);
+            bool r = mouse_captor->handleAnyMouseClick(local_x, local_y, mask, clicktype, down);
             if (r) {
 
                 LL_DEBUGS() << "LLViewerWindow::handleAnyMouseClick viewer with mousecaptor calling updatemouseeventinfo - local_x|global x  "<< local_x << " " << x  << "local/global y " << local_y << " " << y << LL_ENDL;
@@ -1102,7 +1102,7 @@ BOOL LLViewerWindow::handleAnyMouseClick(LLWindow *window, LLCoordGL pos, MASK m
             else if (down && clicktype == CLICK_RIGHT)
             {
                 handlePieMenu(x, y, mask);
-                r = TRUE;
+                r = true;
             }
             return r;
         }
@@ -1110,11 +1110,11 @@ BOOL LLViewerWindow::handleAnyMouseClick(LLWindow *window, LLCoordGL pos, MASK m
         // Mark the click as handled and return if we aren't within the root view to avoid spurious bugs
         if( !mRootView->pointInView(x, y) )
         {
-            return TRUE;
+            return true;
         }
         // Give the UI views a chance to process the click
 
-        BOOL r= mRootView->handleAnyMouseClick(x, y, mask, clicktype, down) ;
+        bool r= mRootView->handleAnyMouseClick(x, y, mask, clicktype, down) ;
         if (r)
         {
 
@@ -1136,7 +1136,7 @@ BOOL LLViewerWindow::handleAnyMouseClick(LLWindow *window, LLCoordGL pos, MASK m
             {
                 LL_INFOS() << buttonname << " Mouse " << buttonstatestr << " " << LLViewerEventRecorder::instance().get_xui()   << LL_ENDL;
             }
-            return TRUE;
+            return true;
         } else if (LLView::sDebugMouseHandling)
             {
                 LL_INFOS() << buttonname << " Mouse " << buttonstatestr << " not handled by view" << LL_ENDL;
@@ -1148,24 +1148,24 @@ BOOL LLViewerWindow::handleAnyMouseClick(LLWindow *window, LLCoordGL pos, MASK m
     {
         LLViewerEventRecorder::instance().clear_xui();
         is_toolmgr_action = true;
-        return TRUE;
+        return true;
     }
 
     if (down && clicktype == CLICK_RIGHT)
     {
         handlePieMenu(x, y, mask);
-        return TRUE;
+        return true;
     }
 
     // If we got this far on a down-click, it wasn't handled.
     // Up-clicks, though, are always handled as far as the OS is concerned.
-    BOOL default_rtn = !down;
+    bool default_rtn = !down;
     return default_rtn;
 }
 
-BOOL LLViewerWindow::handleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask)
+bool LLViewerWindow::handleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask)
 {
-    mAllowMouseDragging = FALSE;
+    mAllowMouseDragging = false;
     if (!mMouseDownTimer.getStarted())
     {
         mMouseDownTimer.start();
@@ -1174,51 +1174,51 @@ BOOL LLViewerWindow::handleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask
     {
         mMouseDownTimer.reset();
     }
-    BOOL down = TRUE;
+    bool down = true;
     //handleMouse() loops back to LLViewerWindow::handleAnyMouseClick
     return gViewerInput.handleMouse(window, pos, mask, CLICK_LEFT, down);
 }
 
-BOOL LLViewerWindow::handleDoubleClick(LLWindow *window,  LLCoordGL pos, MASK mask)
+bool LLViewerWindow::handleDoubleClick(LLWindow *window,  LLCoordGL pos, MASK mask)
 {
     // try handling as a double-click first, then a single-click if that
     // wasn't handled.
-    BOOL down = TRUE;
+    bool down = true;
     if (gViewerInput.handleMouse(window, pos, mask, CLICK_DOUBLELEFT, down))
     {
-        return TRUE;
+        return true;
     }
     return handleMouseDown(window, pos, mask);
 }
 
-BOOL LLViewerWindow::handleMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask)
+bool LLViewerWindow::handleMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask)
 {
     if (mMouseDownTimer.getStarted())
     {
         mMouseDownTimer.stop();
     }
-    BOOL down = FALSE;
+    bool down = false;
     return gViewerInput.handleMouse(window, pos, mask, CLICK_LEFT, down);
 }
-BOOL LLViewerWindow::handleRightMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask)
+bool LLViewerWindow::handleRightMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask)
 {
-    BOOL down = TRUE;
+    bool down = true;
     return gViewerInput.handleMouse(window, pos, mask, CLICK_RIGHT, down);
 }
 
-BOOL LLViewerWindow::handleRightMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask)
+bool LLViewerWindow::handleRightMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask)
 {
-    BOOL down = FALSE;
+    bool down = false;
     return gViewerInput.handleMouse(window, pos, mask, CLICK_RIGHT, down);
 }
 
-BOOL LLViewerWindow::handleMiddleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask)
+bool LLViewerWindow::handleMiddleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask)
 {
-    BOOL down = TRUE;
+    bool down = true;
     gViewerInput.handleMouse(window, pos, mask, CLICK_MIDDLE, down);
 
     // Always handled as far as the OS is concerned.
-    return TRUE;
+    return true;
 }
 
 LLWindowCallbacks::DragNDropResult LLViewerWindow::handleDragNDrop( LLWindow *window, LLCoordGL pos, MASK mask, LLWindowCallbacks::DragNDropAction action, std::string data)
@@ -1256,8 +1256,8 @@ LLWindowCallbacks::DragNDropResult LLViewerWindow::handleDragNDrop( LLWindow *wi
                 if (prim_media_dnd_enabled)
                 {
                     LLPickInfo pick_info = pickImmediate( pos.mX, pos.mY,
-                                                          TRUE /* pick_transparent */,
-                                                          FALSE /* pick_rigged */);
+                                                          true /* pick_transparent */,
+                                                          false /* pick_rigged */);
 
                     S32 object_face = pick_info.mObjectFace;
                     std::string url = data;
@@ -1366,16 +1366,16 @@ LLWindowCallbacks::DragNDropResult LLViewerWindow::handleDragNDrop( LLWindow *wi
     return result;
 }
 
-BOOL LLViewerWindow::handleMiddleMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask)
+bool LLViewerWindow::handleMiddleMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask)
 {
-    BOOL down = FALSE;
+    bool down = false;
     gViewerInput.handleMouse(window, pos, mask, CLICK_MIDDLE, down);
 
     // Always handled as far as the OS is concerned.
-    return TRUE;
+    return true;
 }
 
-BOOL LLViewerWindow::handleOtherMouse(LLWindow *window, LLCoordGL pos, MASK mask, S32 button, bool down)
+bool LLViewerWindow::handleOtherMouse(LLWindow *window, LLCoordGL pos, MASK mask, S32 button, bool down)
 {
     switch (button)
     {
@@ -1390,17 +1390,17 @@ BOOL LLViewerWindow::handleOtherMouse(LLWindow *window, LLCoordGL pos, MASK mask
     }
 
     // Always handled as far as the OS is concerned.
-    return TRUE;
+    return true;
 }
 
-BOOL LLViewerWindow::handleOtherMouseDown(LLWindow *window, LLCoordGL pos, MASK mask, S32 button)
+bool LLViewerWindow::handleOtherMouseDown(LLWindow *window, LLCoordGL pos, MASK mask, S32 button)
 {
-    return handleOtherMouse(window, pos, mask, button, TRUE);
+    return handleOtherMouse(window, pos, mask, button, true);
 }
 
-BOOL LLViewerWindow::handleOtherMouseUp(LLWindow *window, LLCoordGL pos, MASK mask, S32 button)
+bool LLViewerWindow::handleOtherMouseUp(LLWindow *window, LLCoordGL pos, MASK mask, S32 button)
 {
-    return handleOtherMouse(window, pos, mask, button, FALSE);
+    return handleOtherMouse(window, pos, mask, button, false);
 }
 
 // WARNING: this is potentially called multiple times per frame
@@ -1412,7 +1412,7 @@ void LLViewerWindow::handleMouseMove(LLWindow *window,  LLCoordGL pos, MASK mask
     x = ll_round((F32)x / mDisplayScale.mV[VX]);
     y = ll_round((F32)y / mDisplayScale.mV[VY]);
 
-    mMouseInWindow = TRUE;
+    mMouseInWindow = true;
 
     // Save mouse point for access during idle() and display()
 
@@ -1440,7 +1440,7 @@ void LLViewerWindow::handleMouseDragged(LLWindow *window,  LLCoordGL pos, MASK m
     {
         if (mMouseDownTimer.getElapsedTimeF32() > 0.1)
         {
-            mAllowMouseDragging = TRUE;
+            mAllowMouseDragging = true;
             mMouseDownTimer.stop();
         }
     }
@@ -1454,17 +1454,17 @@ void LLViewerWindow::handleMouseLeave(LLWindow *window)
 {
     // Note: we won't get this if we have captured the mouse.
     llassert( gFocusMgr.getMouseCapture() == NULL );
-    mMouseInWindow = FALSE;
+    mMouseInWindow = false;
     LLToolTipMgr::instance().blockToolTips();
 }
 
-BOOL LLViewerWindow::handleCloseRequest(LLWindow *window)
+bool LLViewerWindow::handleCloseRequest(LLWindow *window)
 {
     // User has indicated they want to close, but we may need to ask
     // about modified documents.
     LLAppViewer::instance()->userQuit();
     // Don't quit immediately
-    return FALSE;
+    return false;
 }
 
 void LLViewerWindow::handleQuit(LLWindow *window)
@@ -1489,7 +1489,7 @@ void LLViewerWindow::handleResize(LLWindow *window,  S32 width,  S32 height)
 // The top-level window has gained focus (e.g. via ALT-TAB)
 void LLViewerWindow::handleFocus(LLWindow *window)
 {
-    gFocusMgr.setAppHasFocus(TRUE);
+    gFocusMgr.setAppHasFocus(true);
     LLModalDialog::onAppFocusGained();
 
     gAgent.onAppFocusGained();
@@ -1509,7 +1509,7 @@ void LLViewerWindow::handleFocus(LLWindow *window)
 // The top-level window has lost focus (e.g. via ALT-TAB)
 void LLViewerWindow::handleFocusLost(LLWindow *window)
 {
-    gFocusMgr.setAppHasFocus(FALSE);
+    gFocusMgr.setAppHasFocus(false);
     //LLModalDialog::onAppFocusLost();
     LLToolMgr::getInstance()->onAppFocusLost();
     gFocusMgr.setMouseCapture( NULL );
@@ -1522,7 +1522,7 @@ void LLViewerWindow::handleFocusLost(LLWindow *window)
 
     // restore mouse cursor
     showCursor();
-    getWindow()->setMouseClipping(FALSE);
+    getWindow()->setMouseClipping(false);
 
     // If losing focus while keys are down, handle them as
     // an 'up' to correctly release states, then reset states
@@ -1537,7 +1537,7 @@ void LLViewerWindow::handleFocusLost(LLWindow *window)
 }
 
 
-BOOL LLViewerWindow::handleTranslatedKeyDown(KEY key,  MASK mask, BOOL repeated)
+bool LLViewerWindow::handleTranslatedKeyDown(KEY key,  MASK mask, bool repeated)
 {
     // Handle non-consuming global keybindings, like voice
     // Never affects event processing.
@@ -1558,14 +1558,14 @@ BOOL LLViewerWindow::handleTranslatedKeyDown(KEY key,  MASK mask, BOOL repeated)
         // would like to know about the KEYDOWN for an enter key... so ask and pass it along.
         LLFocusableElement* keyboard_focus = gFocusMgr.getKeyboardFocus();
         if (keyboard_focus && !keyboard_focus->wantsReturnKey())
-            return FALSE;
+            return false;
     }
 
     // remaps, handles ignored cases and returns back to viewer window.
     return gViewerInput.handleKey(key, mask, repeated);
 }
 
-BOOL LLViewerWindow::handleTranslatedKeyUp(KEY key,  MASK mask)
+bool LLViewerWindow::handleTranslatedKeyUp(KEY key,  MASK mask)
 {
     // Handle non-consuming global keybindings, like voice
     // Never affects event processing.
@@ -1581,7 +1581,7 @@ BOOL LLViewerWindow::handleTranslatedKeyUp(KEY key,  MASK mask)
     return gViewerInput.handleKeyUp(key, mask);
 }
 
-void LLViewerWindow::handleScanKey(KEY key, BOOL key_down, BOOL key_up, BOOL key_level)
+void LLViewerWindow::handleScanKey(KEY key, bool key_down, bool key_up, bool key_level)
 {
     LLViewerJoystick::getInstance()->setCameraNeedsUpdate(true);
     gViewerInput.scanKey(key, key_down, key_up, key_level);
@@ -1591,7 +1591,7 @@ void LLViewerWindow::handleScanKey(KEY key, BOOL key_down, BOOL key_up, BOOL key
 
 
 
-BOOL LLViewerWindow::handleActivate(LLWindow *window, BOOL activated)
+bool LLViewerWindow::handleActivate(LLWindow *window, bool activated)
 {
     if (activated)
     {
@@ -1623,15 +1623,15 @@ BOOL LLViewerWindow::handleActivate(LLWindow *window, BOOL activated)
         // Mute audio
         audio_update_volume();
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLViewerWindow::handleActivateApp(LLWindow *window, BOOL activating)
+bool LLViewerWindow::handleActivateApp(LLWindow *window, bool activating)
 {
     //if (!activating) gAgentCamera.changeCameraToDefault();
 
     LLViewerJoystick::getInstance()->setNeedsReset(true);
-    return FALSE;
+    return false;
 }
 
 
@@ -1640,7 +1640,7 @@ void LLViewerWindow::handleMenuSelect(LLWindow *window,  S32 menu_item)
 }
 
 
-BOOL LLViewerWindow::handlePaint(LLWindow *window,  S32 x,  S32 y, S32 width,  S32 height)
+bool LLViewerWindow::handlePaint(LLWindow *window,  S32 x,  S32 y, S32 width,  S32 height)
 {
     // *TODO: Enable similar information output for other platforms?  DK 2011-02-18
 #if LL_WINDOWS
@@ -1666,21 +1666,21 @@ BOOL LLViewerWindow::handlePaint(LLWindow *window,  S32 x,  S32 y, S32 width,  S
                 recording.getPerSec(LLStatViewer::FPS), //mFPSStat.getMeanPerSec(),
                 recording.getLastValue(LLStatViewer::SIM_PHYSICS_FPS),
                 recording.getLastValue(LLStatViewer::SIM_TIME_DILATION));
-        S32 len = temp_str.length();
+        int len = static_cast<int>(temp_str.length());
         TextOutA(hdc, 0, 0, temp_str.c_str(), len);
 
 
         LLVector3d pos_global = gAgent.getPositionGlobal();
         temp_str = llformat( "Avatar pos %6.1lf %6.1lf %6.1lf", pos_global.mdV[0], pos_global.mdV[1], pos_global.mdV[2]);
-        len = temp_str.length();
+        len = static_cast<S32>(temp_str.length());
         TextOutA(hdc, 0, 25, temp_str.c_str(), len);
 
         TextOutA(hdc, 0, 50, "Set \"HeadlessClient FALSE\" in settings.ini file to reenable", 61);
         EndPaint(window_handle, &ps);
-        return TRUE;
+        return true;
     }
 #endif
-    return FALSE;
+    return false;
 }
 
 
@@ -1724,49 +1724,49 @@ void LLViewerWindow::handleDataCopy(LLWindow *window, S32 data_type, void *data)
     }
 }
 
-BOOL LLViewerWindow::handleTimerEvent(LLWindow *window)
+bool LLViewerWindow::handleTimerEvent(LLWindow *window)
 {
     //TODO: just call this every frame from gatherInput instead of using a convoluted 30fps timer callback
     if (LLViewerJoystick::getInstance()->getOverrideCamera())
     {
         LLViewerJoystick::getInstance()->updateStatus();
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLViewerWindow::handleDeviceChange(LLWindow *window)
+bool LLViewerWindow::handleDeviceChange(LLWindow *window)
 {
     // give a chance to use a joystick after startup (hot-plugging)
     if (!LLViewerJoystick::getInstance()->isJoystickInitialized() )
     {
         LLViewerJoystick::getInstance()->init(true);
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
-BOOL LLViewerWindow::handleDPIChanged(LLWindow *window, F32 ui_scale_factor, S32 window_width, S32 window_height)
+bool LLViewerWindow::handleDPIChanged(LLWindow *window, F32 ui_scale_factor, S32 window_width, S32 window_height)
 {
     if (ui_scale_factor >= MIN_UI_SCALE && ui_scale_factor <= MAX_UI_SCALE)
     {
         LLViewerWindow::reshape(window_width, window_height);
         mResDirty = true;
-        return TRUE;
+        return true;
     }
     else
     {
         LL_WARNS() << "DPI change caused UI scale to go out of bounds: " << ui_scale_factor << LL_ENDL;
-        return FALSE;
+        return false;
     }
 }
 
-BOOL LLViewerWindow::handleWindowDidChangeScreen(LLWindow *window)
+bool LLViewerWindow::handleWindowDidChangeScreen(LLWindow *window)
 {
     LLCoordScreen window_rect;
     mWindow->getSize(&window_rect);
     reshape(window_rect.mX, window_rect.mY);
-    return TRUE;
+    return true;
 }
 
 void LLViewerWindow::handlePingWatchdog(LLWindow *window, const char * msg)
@@ -1817,17 +1817,17 @@ LLViewerWindow::LLViewerWindow(const Params& p)
     mWindowRectRaw(0, p.height, p.width, 0),
     mWindowRectScaled(0, p.height, p.width, 0),
     mWorldViewRectRaw(0, p.height, p.width, 0),
-    mLeftMouseDown(FALSE),
-    mMiddleMouseDown(FALSE),
-    mRightMouseDown(FALSE),
-    mMouseInWindow( FALSE ),
-    mAllowMouseDragging(TRUE),
+    mLeftMouseDown(false),
+    mMiddleMouseDown(false),
+    mRightMouseDown(false),
+    mMouseInWindow( false ),
+    mAllowMouseDragging(true),
     mMouseDownTimer(),
     mLastMask( MASK_NONE ),
     mToolStored( NULL ),
-    mHideCursorPermanent( FALSE ),
-    mCursorHidden(FALSE),
-    mIgnoreActivate( FALSE ),
+    mHideCursorPermanent( false ),
+    mCursorHidden(false),
+    mIgnoreActivate( false ),
     mResDirty(false),
     mStatesDirty(false),
     mCurrResolutionIndex(0),
@@ -1856,16 +1856,15 @@ LLViewerWindow::LLViewerWindow(const Params& p)
     /*
     LLWindowCallbacks* callbacks,
     const std::string& title, const std::string& name, S32 x, S32 y, S32 width, S32 height, U32 flags,
-    BOOL fullscreen,
-    BOOL clearBg,
-    BOOL disable_vsync,
-    BOOL ignore_pixel_depth,
+    bool fullscreen,
+    bool clearBg,
+    bool disable_vsync,
+    bool ignore_pixel_depth,
     U32 fsaa_samples)
     */
     // create window
 
     U32 max_core_count = gSavedSettings.getU32("EmulateCoreCount");
-    U32 max_vram = gSavedSettings.getU32("RenderMaxVRAMBudget");
     F32 max_gl_version = gSavedSettings.getF32("RenderMaxOpenGLVersion");
 
     mWindow = LLWindowManager::createWindow(this,
@@ -1877,7 +1876,6 @@ LLViewerWindow::LLViewerWindow(const Params& p)
         p.ignore_pixel_depth,
         0,
         max_core_count,
-        max_vram,
         max_gl_version); //don't use window level anti-aliasing
 
     if (NULL == mWindow)
@@ -1901,7 +1899,7 @@ LLViewerWindow::LLViewerWindow(const Params& p)
     else if (!LLViewerShaderMgr::sInitialized)
     {
         //immediately initialize shaders
-        LLViewerShaderMgr::sInitialized = TRUE;
+        LLViewerShaderMgr::sInitialized = true;
         LLViewerShaderMgr::instance()->setShaders();
     }
 
@@ -1923,7 +1921,7 @@ LLViewerWindow::LLViewerWindow(const Params& p)
         {
             gSavedSettings.setF32("UIScaleFactor", 1.f);
         }
-        gSavedSettings.setBOOL("ResetUIScaleOnFirstRun", FALSE);
+        gSavedSettings.setBOOL("ResetUIScaleOnFirstRun", false);
     }
 
     // Get the real window rect the window was created with (since there are various OS-dependent reasons why
@@ -1971,7 +1969,7 @@ LLViewerWindow::LLViewerWindow(const Params& p)
         || (gSavedSettings.getBOOL("ProbeHardwareOnStartup")))
     {
         LLFeatureManager::getInstance()->applyRecommendedSettings();
-        gSavedSettings.setBOOL("ProbeHardwareOnStartup", FALSE);
+        gSavedSettings.setBOOL("ProbeHardwareOnStartup", false);
     }
 
     // If we crashed while initializng GL stuff last time, disable certain features
@@ -2085,7 +2083,7 @@ void LLViewerWindow::initBase()
     }
     gToolBarView->setShape(panel_holder->getLocalRect());
     // Hide the toolbars for the moment: we'll make them visible after logging in world (see LLViewerWindow::initWorldUI())
-    gToolBarView->setVisible(FALSE);
+    gToolBarView->setVisible(false);
 
     // Constrain floaters to inside the menu and status bar regions.
     gFloaterView = main_view->getChild<LLFloaterView>("Floater View");
@@ -2134,8 +2132,8 @@ void LLViewerWindow::initBase()
 
     // Add the progress bar view (startup view), which overrides everything
     mProgressView = getRootView()->findChild<LLProgressView>("progress_view");
-    setShowProgress(FALSE);
-    setProgressCancelButtonVisible(FALSE);
+    setShowProgress(false);
+    setProgressCancelButtonVisible(false);
 
     gMenuHolder = getRootView()->getChild<LLViewerMenuHolderGL>("Menu Holder");
     LLMenuGL::sMenuContainer = gMenuHolder;
@@ -2147,7 +2145,7 @@ void LLViewerWindow::initWorldUI()
     {
         gIMMgr = LLIMMgr::getInstance();
         LLNavigationBar::getInstance();
-        gFloaterView->pushVisibleAll(FALSE);
+        gFloaterView->pushVisibleAll(false);
         return;
     }
 
@@ -2168,7 +2166,7 @@ void LLViewerWindow::initWorldUI()
         chiclet_bar->setShape(chiclet_container->getLocalRect());
         chiclet_bar->setFollowsAll();
         chiclet_container->addChild(chiclet_bar);
-        chiclet_container->setVisible(TRUE);
+        chiclet_container->setVisible(true);
     }
 
     LLRect morph_view_rect = full_window;
@@ -2189,30 +2187,39 @@ void LLViewerWindow::initWorldUI()
     // Force gFloaterTools to initialize
     LLFloaterReg::getInstance("build");
 
-    // Status bar
-    LLPanel* status_bar_container = getRootView()->getChild<LLPanel>("status_bar_container");
-    gStatusBar = new LLStatusBar(status_bar_container->getLocalRect());
-    gStatusBar->setFollows(FOLLOWS_LEFT | FOLLOWS_TOP | FOLLOWS_RIGHT);
-    gStatusBar->setShape(status_bar_container->getLocalRect());
-    // sync bg color with menu bar
-    gStatusBar->setBackgroundColor( gMenuBarView->getBackgroundColor().get() );
-    // add InBack so that gStatusBar won't be drawn over menu
-    status_bar_container->addChildInBack(gStatusBar, 2/*tab order, after menu*/);
-    status_bar_container->setVisible(TRUE);
-
-    // Navigation bar
-    LLView* nav_bar_container = getRootView()->getChild<LLView>("nav_bar_container");
-
     LLNavigationBar* navbar = LLNavigationBar::getInstance();
-    navbar->setShape(nav_bar_container->getLocalRect());
-    navbar->setBackgroundColor(gMenuBarView->getBackgroundColor().get());
-    nav_bar_container->addChild(navbar);
-    nav_bar_container->setVisible(TRUE);
-
+    if (!gStatusBar)
+    {
+        // Status bar
+        LLPanel* status_bar_container = getRootView()->getChild<LLPanel>("status_bar_container");
+        gStatusBar = new LLStatusBar(status_bar_container->getLocalRect());
+        gStatusBar->setFollows(FOLLOWS_LEFT | FOLLOWS_TOP | FOLLOWS_RIGHT);
+        gStatusBar->setShape(status_bar_container->getLocalRect());
+        // sync bg color with menu bar
+        gStatusBar->setBackgroundColor(gMenuBarView->getBackgroundColor().get());
+        // add InBack so that gStatusBar won't be drawn over menu
+        status_bar_container->addChildInBack(gStatusBar, 2/*tab order, after menu*/);
+        status_bar_container->setVisible(true);
+
+        // Navigation bar
+        LLView* nav_bar_container = getRootView()->getChild<LLView>("nav_bar_container");
+
+        navbar->setShape(nav_bar_container->getLocalRect());
+        navbar->setBackgroundColor(gMenuBarView->getBackgroundColor().get());
+        nav_bar_container->addChild(navbar);
+        nav_bar_container->setVisible(true);
+    }
+    else
+    {
+        LLPanel* status_bar_container = getRootView()->getChild<LLPanel>("status_bar_container");
+        LLView* nav_bar_container = getRootView()->getChild<LLView>("nav_bar_container");
+        status_bar_container->setVisible(true);
+        nav_bar_container->setVisible(true);
+    }
 
     if (!gSavedSettings.getBOOL("ShowNavbarNavigationPanel"))
     {
-        navbar->setVisible(FALSE);
+        navbar->setVisible(false);
     }
     else
     {
@@ -2227,11 +2234,11 @@ void LLViewerWindow::initWorldUI()
     topinfo_bar->setShape(topinfo_bar_container->getLocalRect());
 
     topinfo_bar_container->addChild(topinfo_bar);
-    topinfo_bar_container->setVisible(TRUE);
+    topinfo_bar_container->setVisible(true);
 
     if (!gSavedSettings.getBOOL("ShowMiniLocationPanel"))
     {
-        topinfo_bar->setVisible(FALSE);
+        topinfo_bar->setVisible(false);
     }
 
     if ( gHUDView == NULL )
@@ -2255,7 +2262,7 @@ void LLViewerWindow::initWorldUI()
     LLPanelHideBeacon* panel_hide_beacon = LLPanelHideBeacon::getInstance();
     panel_ssf_container->addChild(panel_hide_beacon);
 
-    panel_ssf_container->setVisible(TRUE);
+    panel_ssf_container->setVisible(true);
 
     LLMenuOptionPathfindingRebakeNavmesh::getInstance()->initialize();
 
@@ -2264,7 +2271,7 @@ void LLViewerWindow::initWorldUI()
     if (gToolBarView)
     {
         gToolBarView->loadToolbars();
-        gToolBarView->setVisible(TRUE);
+        gToolBarView->setVisible(true);
     }
 
     if (!gNonInteractive)
@@ -2301,7 +2308,7 @@ void LLViewerWindow::shutdownViews()
     gFocusMgr.setTopCtrl(NULL);
     if (mWindow)
     {
-        mWindow->allowLanguageTextInput(NULL, FALSE);
+        mWindow->allowLanguageTextInput(NULL, false);
     }
 
     delete mDebugText;
@@ -2312,7 +2319,7 @@ void LLViewerWindow::shutdownViews()
     // Cleanup global views
     if (gMorphView)
     {
-        gMorphView->setVisible(FALSE);
+        gMorphView->setVisible(false);
     }
     LL_INFOS() << "Global views cleaned." << LL_ENDL ;
 
@@ -2397,7 +2404,7 @@ void LLViewerWindow::shutdownGL()
     LLSelectMgr::getInstance()->cleanup();
 
     LL_INFOS() << "Stopping GL during shutdown" << LL_ENDL;
-    stopGL(FALSE);
+    stopGL(false);
     stop_glerror();
 
     gGL.shutdown();
@@ -2419,7 +2426,7 @@ LLViewerWindow::~LLViewerWindow()
     if (LLViewerShaderMgr::sInitialized)
     {
         LLViewerShaderMgr::releaseInstance();
-        LLViewerShaderMgr::sInitialized = FALSE;
+        LLViewerShaderMgr::sInitialized = false;
     }
 }
 
@@ -2433,7 +2440,7 @@ void LLViewerWindow::showCursor()
 {
     mWindow->showCursor();
 
-    mCursorHidden = FALSE;
+    mCursorHidden = false;
 }
 
 void LLViewerWindow::hideCursor()
@@ -2441,7 +2448,7 @@ void LLViewerWindow::hideCursor()
     // And hide the cursor
     mWindow->hideCursor();
 
-    mCursorHidden = TRUE;
+    mCursorHidden = true;
 }
 
 void LLViewerWindow::sendShapeToSim()
@@ -2472,7 +2479,7 @@ void LLViewerWindow::reshape(S32 width, S32 height)
     // may have been destructed.
     if (!LLApp::isExiting())
     {
-        gWindowResized = TRUE;
+        gWindowResized = true;
 
         // update our window rectangle
         mWindowRectRaw.mRight = mWindowRectRaw.mLeft + width;
@@ -2489,7 +2496,7 @@ void LLViewerWindow::reshape(S32 width, S32 height)
 
         calcDisplayScale();
 
-        BOOL display_scale_changed = mDisplayScale != LLUI::getScaleFactor();
+        bool display_scale_changed = mDisplayScale != LLUI::getScaleFactor();
         LLUI::setScaleFactor(mDisplayScale);
 
         // update our window rectangle
@@ -2507,7 +2514,7 @@ void LLViewerWindow::reshape(S32 width, S32 height)
             // Needs only a 'scale change' update, everything else gets handled by LLLayoutStack::updateClass()
             LLPanelLogin::reshapePanel();
         }
-        LLView::sForceReshape = FALSE;
+        LLView::sForceReshape = false;
 
         // clear font width caches
         if (display_scale_changed)
@@ -2518,7 +2525,7 @@ void LLViewerWindow::reshape(S32 width, S32 height)
         sendShapeToSim();
 
         // store new settings for the mode we are in, regardless
-        BOOL maximized = mWindow->getMaximized();
+        bool maximized = mWindow->getMaximized();
         gSavedSettings.setBOOL("WindowMaximized", maximized);
 
         if (!maximized)
@@ -2546,7 +2553,7 @@ void LLViewerWindow::reshape(S32 width, S32 height)
 
 
 // Hide normal UI when a logon fails
-void LLViewerWindow::setNormalControlsVisible( BOOL visible )
+void LLViewerWindow::setNormalControlsVisible( bool visible )
 {
     if(LLChicletBar::instanceExists())
     {
@@ -2658,7 +2665,7 @@ void LLViewerWindow::draw()
 {
 
 //#if LL_DEBUG
-    LLView::sIsDrawing = TRUE;
+    LLView::sIsDrawing = true;
 //#endif
     stop_glerror();
 
@@ -2776,17 +2783,17 @@ void LLViewerWindow::draw()
 
     gUIProgram.unbind();
 
-    LLView::sIsDrawing = FALSE;
+    LLView::sIsDrawing = false;
 }
 
 // Takes a single keyup event, usually when UI is visible
-BOOL LLViewerWindow::handleKeyUp(KEY key, MASK mask)
+bool LLViewerWindow::handleKeyUp(KEY key, MASK mask)
 {
-    if (LLSetKeyBindDialog::recordKey(key, mask, FALSE))
+    if (LLSetKeyBindDialog::recordKey(key, mask, false))
     {
         LL_DEBUGS() << "KeyUp handled by LLSetKeyBindDialog" << LL_ENDL;
         LLViewerEventRecorder::instance().logKeyEvent(key, mask);
-        return TRUE;
+        return true;
     }
 
     LLFocusableElement* keyboard_focus = gFocusMgr.getKeyboardFocus();
@@ -2798,7 +2805,7 @@ BOOL LLViewerWindow::handleKeyUp(KEY key, MASK mask)
         // We have keyboard focus, and it's not an accelerator
         if (keyboard_focus && keyboard_focus->wantsKeyUpKeyDown())
         {
-            return keyboard_focus->handleKeyUp(key, mask, FALSE);
+            return keyboard_focus->handleKeyUp(key, mask, false);
         }
         else if (key < 0x80)
         {
@@ -2809,14 +2816,14 @@ BOOL LLViewerWindow::handleKeyUp(KEY key, MASK mask)
 
     if (keyboard_focus)
     {
-        if (keyboard_focus->handleKeyUp(key, mask, FALSE))
+        if (keyboard_focus->handleKeyUp(key, mask, false))
         {
             LL_DEBUGS() << "LLviewerWindow::handleKeyUp - in 'traverse up' - no loops seen... just called keyboard_focus->handleKeyUp an it returned true" << LL_ENDL;
             LLViewerEventRecorder::instance().logKeyEvent(key, mask);
-            return TRUE;
+            return true;
         }
         else {
-            LL_DEBUGS() << "LLviewerWindow::handleKeyUp - in 'traverse up' - no loops seen... just called keyboard_focus->handleKeyUp an it returned FALSE" << LL_ENDL;
+            LL_DEBUGS() << "LLviewerWindow::handleKeyUp - in 'traverse up' - no loops seen... just called keyboard_focus->handleKeyUp an it returned false" << LL_ENDL;
         }
     }
 
@@ -2825,7 +2832,7 @@ BOOL LLViewerWindow::handleKeyUp(KEY key, MASK mask)
     {
         LL_DEBUGS() << "LLviewerWindow::handleKey new gesture release feature" << LL_ENDL;
         LLViewerEventRecorder::instance().logKeyEvent(key,mask);
-        return TRUE;
+        return true;
     }
     //Old format gestures do not support this, so no need to implement it.
 
@@ -2836,18 +2843,18 @@ BOOL LLViewerWindow::handleKeyUp(KEY key, MASK mask)
 }
 
 // Takes a single keydown event, usually when UI is visible
-BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
+bool LLViewerWindow::handleKey(KEY key, MASK mask)
 {
     // hide tooltips on keypress
     LLToolTipMgr::instance().blockToolTips();
 
     // Menus get handled on key down instead of key up
     // so keybindings have to be recorded before that
-    if (LLSetKeyBindDialog::recordKey(key, mask, TRUE))
+    if (LLSetKeyBindDialog::recordKey(key, mask, true))
     {
         LL_DEBUGS() << "Key handled by LLSetKeyBindDialog" << LL_ENDL;
         LLViewerEventRecorder::instance().logKeyEvent(key,mask);
-        return TRUE;
+        return true;
     }
 
     LLFocusableElement* keyboard_focus = gFocusMgr.getKeyboardFocus();
@@ -2859,7 +2866,7 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
         //don't switch to mouselook if any floater has focus
         if ((key == KEY_MOUSELOOK) && !(mask & (MASK_CONTROL | MASK_ALT)))
         {
-            return TRUE;
+            return true;
         }
 
         LLUICtrl* cur_focus = dynamic_cast<LLUICtrl*>(keyboard_focus);
@@ -2902,7 +2909,7 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
                     if (res == 1 && chars[0] >= 0x20)
                     {
                         // Let it fall through to character handler and get a WM_CHAR.
-                        return TRUE;
+                        return true;
                     }
                 }
             }
@@ -2913,25 +2920,25 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
                 // We have keyboard focus, and it's not an accelerator
                 if (keyboard_focus && keyboard_focus->wantsKeyUpKeyDown())
                 {
-                    return keyboard_focus->handleKey(key, mask, FALSE);
+                    return keyboard_focus->handleKey(key, mask, false);
                 }
                 else if (key < 0x80)
                 {
                     // Not a special key, so likely (we hope) to generate a character.  Let it fall through to character handler first.
-                    return TRUE;
+                    return true;
                 }
             }
         }
     }
 
     // let menus handle navigation keys for navigation
-    if ((gMenuBarView && gMenuBarView->handleKey(key, mask, TRUE))
-        ||(gLoginMenuBarView && gLoginMenuBarView->handleKey(key, mask, TRUE))
-        ||(gMenuHolder && gMenuHolder->handleKey(key, mask, TRUE)))
+    if ((gMenuBarView && gMenuBarView->handleKey(key, mask, true))
+        ||(gLoginMenuBarView && gLoginMenuBarView->handleKey(key, mask, true))
+        ||(gMenuHolder && gMenuHolder->handleKey(key, mask, true)))
     {
         LL_DEBUGS() << "LLviewerWindow::handleKey handle nav keys for nav" << LL_ENDL;
         LLViewerEventRecorder::instance().logKeyEvent(key,mask);
-        return TRUE;
+        return true;
     }
 
 
@@ -2942,10 +2949,10 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
         // Check the current floater's menu first, if it has one.
         if (gFocusMgr.keyboardFocusHasAccelerators()
             && keyboard_focus
-            && keyboard_focus->handleKey(key,mask,FALSE))
+            && keyboard_focus->handleKey(key,mask,false))
         {
             LLViewerEventRecorder::instance().logKeyEvent(key,mask);
-            return TRUE;
+            return true;
         }
 
         if (gAgent.isInitialized()
@@ -2954,13 +2961,13 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
             && gMenuBarView->handleAcceleratorKey(key, mask))
         {
             LLViewerEventRecorder::instance().logKeyEvent(key, mask);
-            return TRUE;
+            return true;
         }
 
         if (gLoginMenuBarView && gLoginMenuBarView->handleAcceleratorKey(key, mask))
         {
             LLViewerEventRecorder::instance().logKeyEvent(key,mask);
-            return TRUE;
+            return true;
         }
     }
 
@@ -2985,13 +2992,13 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
             mRootView->focusNextRoot();
         }
         LLViewerEventRecorder::instance().logKeyEvent(key,mask);
-        return TRUE;
+        return true;
     }
     // hidden edit menu for cut/copy/paste
     if (gEditMenu && gEditMenu->handleAcceleratorKey(key, mask))
     {
         LLViewerEventRecorder::instance().logKeyEvent(key,mask);
-        return TRUE;
+        return true;
     }
 
     LLFloater* focused_floaterp = gFloaterView->getFocusedFloater();
@@ -3021,7 +3028,7 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
                     case KEY_END:
                         // when chatbar is empty or ArrowKeysAlwaysMove set,
                         // pass arrow keys on to avatar...
-                        return FALSE;
+                        return false;
                     default:
                         break;
                     }
@@ -3029,14 +3036,14 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
         }
         }
 
-        if (keyboard_focus->handleKey(key, mask, FALSE))
+        if (keyboard_focus->handleKey(key, mask, false))
         {
 
             LL_DEBUGS() << "LLviewerWindow::handleKey - in 'traverse up' - no loops seen... just called keyboard_focus->handleKey an it returned true" << LL_ENDL;
             LLViewerEventRecorder::instance().logKeyEvent(key,mask);
-            return TRUE;
+            return true;
         } else {
-            LL_DEBUGS() << "LLviewerWindow::handleKey - in 'traverse up' - no loops seen... just called keyboard_focus->handleKey an it returned FALSE" << LL_ENDL;
+            LL_DEBUGS() << "LLviewerWindow::handleKey - in 'traverse up' - no loops seen... just called keyboard_focus->handleKey an it returned false" << LL_ENDL;
         }
     }
 
@@ -3044,7 +3051,7 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
     {
         LL_DEBUGS() << "LLviewerWindow::handleKey toolbar handling?" << LL_ENDL;
         LLViewerEventRecorder::instance().logKeyEvent(key,mask);
-        return TRUE;
+        return true;
     }
 
     // Try for a new-format gesture
@@ -3052,7 +3059,7 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
     {
         LL_DEBUGS() << "LLviewerWindow::handleKey new gesture feature" << LL_ENDL;
         LLViewerEventRecorder::instance().logKeyEvent(key,mask);
-        return TRUE;
+        return true;
     }
 
     // See if this is a gesture trigger.  If so, eat the key and
@@ -3061,7 +3068,7 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
     {
         LL_DEBUGS() << "LLviewerWindow::handleKey check gesture trigger" << LL_ENDL;
         LLViewerEventRecorder::instance().logKeyEvent(key,mask);
-        return TRUE;
+        return true;
     }
 
     // If "Pressing letter keys starts local chat" option is selected, we are not in mouselook,
@@ -3084,7 +3091,7 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
         {
             // passing NULL here, character will be added later when it is handled by character handler.
             nearby_chat->startChat(NULL);
-            return TRUE;
+            return true;
         }
     }
 
@@ -3095,12 +3102,12 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
         && gMenuBarView->handleAcceleratorKey(key, mask))
     {
         LLViewerEventRecorder::instance().logKeyEvent(key, mask);
-        return TRUE;
+        return true;
     }
 
     if (gLoginMenuBarView && gLoginMenuBarView->handleAcceleratorKey(key, mask))
     {
-        return TRUE;
+        return true;
     }
 
     // don't pass keys on to world when something in ui has focus
@@ -3110,7 +3117,7 @@ BOOL LLViewerWindow::handleKey(KEY key, MASK mask)
 }
 
 
-BOOL LLViewerWindow::handleUnicodeChar(llwchar uni_char, MASK mask)
+bool LLViewerWindow::handleUnicodeChar(llwchar uni_char, MASK mask)
 {
     // HACK:  We delay processing of return keys until they arrive as a Unicode char,
     // so that if you're typing chat text at low frame rate, we don't send the chat
@@ -3128,27 +3135,27 @@ BOOL LLViewerWindow::handleUnicodeChar(llwchar uni_char, MASK mask)
     }
 
     // let menus handle navigation (jump) keys
-    if (gMenuBarView && gMenuBarView->handleUnicodeChar(uni_char, TRUE))
+    if (gMenuBarView && gMenuBarView->handleUnicodeChar(uni_char, true))
     {
-        return TRUE;
+        return true;
     }
 
     // Traverses up the hierarchy
     LLFocusableElement* keyboard_focus = gFocusMgr.getKeyboardFocus();
     if( keyboard_focus )
     {
-        if (keyboard_focus->handleUnicodeChar(uni_char, FALSE))
+        if (keyboard_focus->handleUnicodeChar(uni_char, false))
         {
-            return TRUE;
+            return true;
         }
 
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLViewerWindow::handleUnicodeString(char *uni_str, bool editing)
+bool LLViewerWindow::handleUnicodeString(char *uni_str, bool editing)
 {
 	auto keyboard_focus = gFocusMgr.getKeyboardFocus();
 	if (keyboard_focus)
@@ -3369,12 +3376,12 @@ void LLViewerWindow::updateUI()
     S32 x = mCurrentMousePoint.mX;
     S32 y = mCurrentMousePoint.mY;
 
-    MASK    mask = gKeyboard->currentMask(TRUE);
+    MASK    mask = gKeyboard->currentMask(true);
 
     if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_RAYCAST))
     {
         gDebugRaycastFaceHit = gDebugRaycastGLTFNodeHit = gDebugRaycastGLTFPrimitiveHit = -1;
-        gDebugRaycastObject = cursorIntersect(-1, -1, 512.f, NULL, -1, FALSE, FALSE, TRUE, FALSE,
+        gDebugRaycastObject = cursorIntersect(-1, -1, 512.f, NULL, -1, false, false, true, false,
                                               &gDebugRaycastFaceHit,
                                               &gDebugRaycastGLTFNodeHit,
                                               &gDebugRaycastGLTFPrimitiveHit,
@@ -3391,7 +3398,7 @@ void LLViewerWindow::updateUI()
     updateMouseDelta();
     updateKeyboardFocus();
 
-    BOOL handled = FALSE;
+    bool handled = false;
 
     LLUICtrl* top_ctrl = gFocusMgr.getTopCtrl();
     LLMouseHandler* mouse_captor = gFocusMgr.getMouseCapture();
@@ -3643,7 +3650,7 @@ void LLViewerWindow::updateUI()
                         last_handle_msg = LLView::sMouseHandlerMessage;
                         LL_INFOS() << "Hover" << LLView::sMouseHandlerMessage << LL_ENDL;
                     }
-                    handled = TRUE;
+                    handled = true;
                 }
                 else if (LLView::sDebugMouseHandling)
                 {
@@ -3667,7 +3674,7 @@ void LLViewerWindow::updateUI()
         }
 
         // Show a new tool tip (or update one that is already shown)
-        BOOL tool_tip_handled = FALSE;
+        bool tool_tip_handled = false;
         std::string tool_tip_msg;
         if( handled
             && !mWindow->isCursorHidden())
@@ -3819,12 +3826,12 @@ void LLViewerWindow::updateLayout()
             }
             // Update the location of the blue box tool popup
             LLCoordGL select_center_screen;
-            MASK    mask = gKeyboard->currentMask(TRUE);
+            MASK    mask = gKeyboard->currentMask(true);
             gFloaterTools->updatePopup( select_center_screen, mask );
         }
         else
         {
-            gFloaterTools->setVisible(FALSE);
+            gFloaterTools->setVisible(false);
         }
         //gMenuBarView->setItemVisible("BuildTools", gFloaterTools->getVisible());
     }
@@ -3858,11 +3865,11 @@ void LLViewerWindow::updateMouseDelta()
         mouse_pos.mX > mWindowRectRaw.getWidth() ||
         mouse_pos.mY > mWindowRectRaw.getHeight())
     {
-        mMouseInWindow = FALSE;
+        mMouseInWindow = false;
     }
     else
     {
-        mMouseInWindow = TRUE;
+        mMouseInWindow = true;
     }
 
     LLVector2 mouse_vel;
@@ -3918,7 +3925,7 @@ void LLViewerWindow::updateKeyboardFocus()
                 {
                     if (!parent->focusFirstItem())
                     {
-                        parent->setFocus(TRUE);
+                        parent->setFocus(true);
                     }
                     new_focus_found = true;
                     break;
@@ -3931,7 +3938,7 @@ void LLViewerWindow::updateKeyboardFocus()
             // are only moving focus higher in the hierarchy
             if (!new_focus_found)
             {
-                cur_focus->setFocus(FALSE);
+                cur_focus->setFocus(false);
             }
         }
         else if (cur_focus->isFocusRoot())
@@ -3953,11 +3960,11 @@ void LLViewerWindow::updateKeyboardFocus()
         // sync all floaters with their focus state
         gFloaterView->highlightFocusedFloater();
         gSnapshotFloaterView->highlightFocusedFloater();
-        MASK    mask = gKeyboard->currentMask(TRUE);
+        MASK    mask = gKeyboard->currentMask(true);
         if ((mask & MASK_CONTROL) == 0)
         {
             // control key no longer held down, finish cycle mode
-            gFloaterView->setCycleMode(FALSE);
+            gFloaterView->setCycleMode(false);
 
             gFloaterView->syncFloaterTabOrder();
         }
@@ -3984,7 +3991,7 @@ void LLViewerWindow::updateWorldViewRect(bool use_full_window)
     // start off using whole window to render world
     LLRect new_world_rect = mWindowRectRaw;
 
-    if (use_full_window == false && mWorldViewPlaceholder.get())
+    if (!use_full_window && mWorldViewPlaceholder.get())
     {
         new_world_rect = mWorldViewPlaceholder.get()->calcScreenRect();
         // clamp to at least a 1x1 rect so we don't try to allocate zero width gl buffers
@@ -4000,7 +4007,7 @@ void LLViewerWindow::updateWorldViewRect(bool use_full_window)
     if (mWorldViewRectRaw != new_world_rect)
     {
         mWorldViewRectRaw = new_world_rect;
-        gResizeScreenTexture = TRUE;
+        gResizeScreenTexture = true;
         LLViewerCamera::getInstance()->setViewHeightInPixels( mWorldViewRectRaw.getHeight() );
         LLViewerCamera::getInstance()->setAspect( getWorldViewAspectRatio() );
 
@@ -4048,9 +4055,9 @@ void LLViewerWindow::saveLastMouse(const LLCoordGL &point)
 // Draws the selection outlines for the currently selected objects
 // Must be called after displayObjects is called, which sets the mGLName parameter
 // NOTE: This function gets called 3 times:
-//  render_ui_3d:           FALSE, FALSE, TRUE
-//  render_hud_elements:    FALSE, FALSE, FALSE
-void LLViewerWindow::renderSelections( BOOL for_gl_pick, BOOL pick_parcel_walls, BOOL for_hud )
+//  render_ui_3d:           false, false, true
+//  render_hud_elements:    false, false, false
+void LLViewerWindow::renderSelections( bool for_gl_pick, bool pick_parcel_walls, bool for_hud )
 {
     LLObjectSelectionHandle selection = LLSelectMgr::getInstance()->getSelection();
 
@@ -4169,21 +4176,21 @@ void LLViewerWindow::renderSelections( BOOL for_gl_pick, BOOL pick_parcel_walls,
                     // make whole viewer benefit.
                     LLSelectMgr::getInstance()->selectGetEditMoveLinksetPermissions(all_selected_objects_move, all_selected_objects_modify);
 
-                    BOOL draw_handles = TRUE;
+                    bool draw_handles = true;
 
                     if (tool == LLToolCompTranslate::getInstance() && !all_selected_objects_move && !LLSelectMgr::getInstance()->isMovableAvatarSelected())
                     {
-                        draw_handles = FALSE;
+                        draw_handles = false;
                     }
 
                     if (tool == LLToolCompRotate::getInstance() && !all_selected_objects_move && !LLSelectMgr::getInstance()->isMovableAvatarSelected())
                     {
-                        draw_handles = FALSE;
+                        draw_handles = false;
                     }
 
                     if ( !all_selected_objects_modify && tool == LLToolCompScale::getInstance() )
                     {
-                        draw_handles = FALSE;
+                        draw_handles = false;
                     }
 
                     if( draw_handles )
@@ -4227,9 +4234,9 @@ LLVector3d LLViewerWindow::clickPointInWorldGlobal(S32 x, S32 y_from_bot, LLView
 }
 
 
-BOOL LLViewerWindow::clickPointOnSurfaceGlobal(const S32 x, const S32 y, LLViewerObject *objectp, LLVector3d &point_global) const
+bool LLViewerWindow::clickPointOnSurfaceGlobal(const S32 x, const S32 y, LLViewerObject *objectp, LLVector3d &point_global) const
 {
-    BOOL intersect = FALSE;
+    bool intersect = false;
 
 //  U8 shape = objectp->mPrimitiveCode & LL_PCODE_BASE_MASK;
     if (!intersect)
@@ -4249,20 +4256,20 @@ void LLViewerWindow::pickAsync( S32 x,
                                 S32 y_from_bot,
                                 MASK mask,
                                 void (*callback)(const LLPickInfo& info),
-                                BOOL pick_transparent,
-                                BOOL pick_rigged,
-                                BOOL pick_unselectable,
-                                BOOL pick_reflection_probes)
+                                bool pick_transparent,
+                                bool pick_rigged,
+                                bool pick_unselectable,
+                                bool pick_reflection_probes)
 {
     // "Show Debug Alpha" means no object actually transparent
-    BOOL in_build_mode = LLFloaterReg::instanceVisible("build");
+    bool in_build_mode = LLFloaterReg::instanceVisible("build");
     if (LLDrawPoolAlpha::sShowDebugAlpha
         || (in_build_mode && gSavedSettings.getBOOL("SelectInvisibleObjects")))
     {
-        pick_transparent = TRUE;
+        pick_transparent = true;
     }
 
-    LLPickInfo pick_info(LLCoordGL(x, y_from_bot), mask, pick_transparent, pick_rigged, FALSE, pick_reflection_probes, pick_unselectable, TRUE, callback);
+    LLPickInfo pick_info(LLCoordGL(x, y_from_bot), mask, pick_transparent, pick_rigged, false, pick_reflection_probes, pick_unselectable, true, callback);
     schedulePick(pick_info);
 }
 
@@ -4318,19 +4325,19 @@ void LLViewerWindow::returnEmptyPicks()
 }
 
 // Performs the GL object/land pick.
-LLPickInfo LLViewerWindow::pickImmediate(S32 x, S32 y_from_bot, BOOL pick_transparent, BOOL pick_rigged, BOOL pick_particle, BOOL pick_unselectable, BOOL pick_reflection_probe)
+LLPickInfo LLViewerWindow::pickImmediate(S32 x, S32 y_from_bot, bool pick_transparent, bool pick_rigged, bool pick_particle, bool pick_unselectable, bool pick_reflection_probe)
 {
-    BOOL in_build_mode = LLFloaterReg::instanceVisible("build");
+    bool in_build_mode = LLFloaterReg::instanceVisible("build");
     if ((in_build_mode && gSavedSettings.getBOOL("SelectInvisibleObjects")) || LLDrawPoolAlpha::sShowDebugAlpha)
     {
         // build mode allows interaction with all transparent objects
         // "Show Debug Alpha" means no object actually transparent
-        pick_transparent = TRUE;
+        pick_transparent = true;
     }
 
     // shortcut queueing in mPicks and just update mLastPick in place
-    MASK    key_mask = gKeyboard->currentMask(TRUE);
-    mLastPick = LLPickInfo(LLCoordGL(x, y_from_bot), key_mask, pick_transparent, pick_rigged, pick_particle, pick_reflection_probe, TRUE, FALSE, NULL);
+    MASK    key_mask = gKeyboard->currentMask(true);
+    mLastPick = LLPickInfo(LLCoordGL(x, y_from_bot), key_mask, pick_transparent, pick_rigged, pick_particle, pick_reflection_probe, true, false, NULL);
     mLastPick.fetchResults();
 
     return mLastPick;
@@ -4365,10 +4372,10 @@ LLHUDIcon* LLViewerWindow::cursorIntersectIcon(S32 mouse_x, S32 mouse_y, F32 dep
 LLViewerObject* LLViewerWindow::cursorIntersect(S32 mouse_x, S32 mouse_y, F32 depth,
                                                 LLViewerObject *this_object,
                                                 S32 this_face,
-                                                BOOL pick_transparent,
-                                                BOOL pick_rigged,
-                                                BOOL pick_unselectable,
-                                                BOOL pick_reflection_probe,
+                                                bool pick_transparent,
+                                                bool pick_rigged,
+                                                bool pick_unselectable,
+                                                bool pick_reflection_probe,
                                                 S32* face_hit,
                                                 S32* gltf_node_hit,
                                                 S32* gltf_primitive_hit,
@@ -4554,7 +4561,7 @@ LLVector3 LLViewerWindow::mouseDirectionCamera(const S32 x, const S32 y) const
 
 
 
-BOOL LLViewerWindow::mousePointOnPlaneGlobal(LLVector3d& point, const S32 x, const S32 y,
+bool LLViewerWindow::mousePointOnPlaneGlobal(LLVector3d& point, const S32 x, const S32 y,
                                         const LLVector3d &plane_point_global,
                                         const LLVector3 &plane_normal_global)
 {
@@ -4585,11 +4592,11 @@ BOOL LLViewerWindow::mousePointOnPlaneGlobal(LLVector3d& point, const S32 x, con
 
 
 // Returns global position
-BOOL LLViewerWindow::mousePointOnLandGlobal(const S32 x, const S32 y, LLVector3d *land_position_global, BOOL ignore_distance)
+bool LLViewerWindow::mousePointOnLandGlobal(const S32 x, const S32 y, LLVector3d *land_position_global, bool ignore_distance)
 {
     LLVector3       mouse_direction_global = mouseDirectionGlobal(x,y);
     F32             mouse_dir_scale;
-    BOOL            hit_land = FALSE;
+    bool            hit_land = false;
     LLViewerRegion  *regionp;
     F32         land_z;
     const F32   FIRST_PASS_STEP = 1.0f;     // meters
@@ -4635,7 +4642,7 @@ BOOL LLViewerWindow::mousePointOnLandGlobal(const S32 x, const S32 y, LLVector3d
 
             // cout << "under land at " << probe_point << " scale " << mouse_vec_scale << endl;
 
-            hit_land = TRUE;
+            hit_land = true;
             break;
         }
     }
@@ -4683,16 +4690,16 @@ BOOL LLViewerWindow::mousePointOnLandGlobal(const S32 x, const S32 y, LLVector3d
                 // ...just went under land again
 
                 *land_position_global = probe_point_global;
-                return TRUE;
+                return true;
             }
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 // Saves an image to the harddrive as "SnapshotX" where X >= 1.
-void LLViewerWindow::saveImageNumbered(LLImageFormatted *image, BOOL force_picker, const snapshot_saved_signal_t::slot_type& success_cb, const snapshot_saved_signal_t::slot_type& failure_cb)
+void LLViewerWindow::saveImageNumbered(LLImageFormatted *image, bool force_picker, const snapshot_saved_signal_t::slot_type& success_cb, const snapshot_saved_signal_t::slot_type& failure_cb)
 {
     if (!image)
     {
@@ -4791,7 +4798,7 @@ void LLViewerWindow::saveImageLocal(LLImageFormatted *image, const snapshot_save
     }
 
     // Look for an unused file name
-    BOOL is_snapshot_name_loc_set = isSnapshotLocSet();
+    bool is_snapshot_name_loc_set = isSnapshotLocSet();
     std::string filepath;
     S32 i = 1;
     S32 err = 0;
@@ -4845,12 +4852,12 @@ void LLViewerWindow::movieSize(S32 new_width, S32 new_height)
     }
 }
 
-BOOL LLViewerWindow::saveSnapshot(const std::string& filepath, S32 image_width, S32 image_height, BOOL show_ui, BOOL show_hud, BOOL do_rebuild, LLSnapshotModel::ESnapshotLayerType type, LLSnapshotModel::ESnapshotFormat format)
+bool LLViewerWindow::saveSnapshot(const std::string& filepath, S32 image_width, S32 image_height, bool show_ui, bool show_hud, bool do_rebuild, LLSnapshotModel::ESnapshotLayerType type, LLSnapshotModel::ESnapshotFormat format)
 {
     LL_INFOS() << "Saving snapshot to: " << filepath << LL_ENDL;
 
     LLPointer<LLImageRaw> raw = new LLImageRaw;
-    BOOL success = rawSnapshot(raw, image_width, image_height, TRUE, FALSE, show_ui, show_hud, do_rebuild);
+    bool success = rawSnapshot(raw, image_width, image_height, true, false, show_ui, show_hud, do_rebuild);
 
     if (success)
     {
@@ -4898,7 +4905,7 @@ void LLViewerWindow::playSnapshotAnimAndSound()
     send_sound_trigger(LLUUID(gSavedSettings.getString("UISndSnapshot")), 1.0f);
 }
 
-BOOL LLViewerWindow::isSnapshotLocSet() const
+bool LLViewerWindow::isSnapshotLocSet() const
 {
     std::string snapshot_dir = sSnapshotDir;
     return !snapshot_dir.empty();
@@ -4909,50 +4916,51 @@ void LLViewerWindow::resetSnapshotLoc() const
     gSavedPerAccountSettings.setString("SnapshotBaseDir", std::string());
 }
 
-BOOL LLViewerWindow::thumbnailSnapshot(LLImageRaw *raw, S32 preview_width, S32 preview_height, BOOL show_ui, BOOL show_hud, BOOL do_rebuild, BOOL no_post, LLSnapshotModel::ESnapshotLayerType type)
+bool LLViewerWindow::thumbnailSnapshot(LLImageRaw *raw, S32 preview_width, S32 preview_height, bool show_ui, bool show_hud, bool do_rebuild, bool no_post, LLSnapshotModel::ESnapshotLayerType type)
 {
-    return rawSnapshot(raw, preview_width, preview_height, FALSE, FALSE, show_ui, show_hud, do_rebuild, no_post, type);
+    return rawSnapshot(raw, preview_width, preview_height, false, false, show_ui, show_hud, do_rebuild, no_post, type);
 }
 
 // Saves the image from the screen to a raw image
 // Since the required size might be bigger than the available screen, this method rerenders the scene in parts (called subimages) and copy
 // the results over to the final raw image.
-BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_height,
-    BOOL keep_window_aspect, BOOL is_texture, BOOL show_ui, BOOL show_hud, BOOL do_rebuild, BOOL no_post, LLSnapshotModel::ESnapshotLayerType type, S32 max_size)
+bool LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_height,
+    bool keep_window_aspect, bool is_texture, bool show_ui, bool show_hud, bool do_rebuild, bool no_post, LLSnapshotModel::ESnapshotLayerType type, S32 max_size)
 {
     if (!raw)
     {
-        return FALSE;
+        return false;
     }
+
     //check if there is enough memory for the snapshot image
     if(image_width * image_height > (1 << 22)) //if snapshot image is larger than 2K by 2K
     {
         if(!LLMemory::tryToAlloc(NULL, image_width * image_height * 3))
         {
             LL_WARNS() << "No enough memory to take the snapshot with size (w : h): " << image_width << " : " << image_height << LL_ENDL ;
-            return FALSE ; //there is no enough memory for taking this snapshot.
+            return false ; //there is no enough memory for taking this snapshot.
         }
     }
 
     // PRE SNAPSHOT
     gSnapshotNoPost = no_post;
-    gDisplaySwapBuffers = FALSE;
+    gDisplaySwapBuffers = false;
 
     glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); // stencil buffer is deprecated | GL_STENCIL_BUFFER_BIT);
     setCursor(UI_CURSOR_WAIT);
 
     // Hide all the UI widgets first and draw a frame
-    BOOL prev_draw_ui = gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI) ? TRUE : FALSE;
+    bool prev_draw_ui = gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI);
 
     if ( prev_draw_ui != show_ui)
     {
         LLPipeline::toggleRenderDebugFeature(LLPipeline::RENDER_DEBUG_FEATURE_UI);
     }
 
-    BOOL hide_hud = !show_hud && LLPipeline::sShowHUDAttachments;
+    bool hide_hud = !show_hud && LLPipeline::sShowHUDAttachments;
     if (hide_hud)
     {
-        LLPipeline::sShowHUDAttachments = FALSE;
+        LLPipeline::sShowHUDAttachments = false;
     }
 
     // if not showing ui, use full window to render world view
@@ -5043,20 +5051,24 @@ BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_hei
         image_buffer_x = llfloor(snapshot_width  * scale_factor) ;
         image_buffer_y = llfloor(snapshot_height * scale_factor) ;
     }
+
+    LLImageDataLock lock(raw);
+
     if ((image_buffer_x > 0) && (image_buffer_y > 0))
     {
         raw->resize(image_buffer_x, image_buffer_y, 3);
     }
     else
     {
-        return FALSE ;
+        return false;
     }
+
     if (raw->isBufferInvalid())
     {
-        return FALSE ;
+        return false;
     }
 
-    BOOL high_res = scale_factor >= 2.f; // Font scaling is slow, only do so if rez is much higher
+    bool high_res = scale_factor >= 2.f; // Font scaling is slow, only do so if rez is much higher
     if (high_res && show_ui)
     {
         // Note: we should never get there...
@@ -5084,8 +5096,8 @@ BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_hei
         S32 output_buffer_offset_x = 0;
         for (int subimage_x = 0; subimage_x < scale_factor; ++subimage_x)
         {
-            gDisplaySwapBuffers = FALSE;
-            gDepthDirty = TRUE;
+            gDisplaySwapBuffers = false;
+            gDepthDirty = true;
 
             S32 subimage_x_offset = llclamp(buffer_x_offset - (subimage_x * window_width), 0, window_width);
             // handle fractional rows
@@ -5096,12 +5108,12 @@ BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_hei
             if (read_width && read_height)
             {
                 const U32 subfield = subimage_x+(subimage_y*llceil(scale_factor));
-                display(do_rebuild, scale_factor, subfield, TRUE);
+                display(do_rebuild, scale_factor, subfield, true);
 
                 if (!LLPipeline::sRenderDeferred)
                 {
                     // Required for showing the GUI in snapshots and performing bloom composite overlay
-                    // Call even if show_ui is FALSE
+                    // Call even if show_ui is false
                     render_ui(scale_factor, subfield);
                     swap();
                 }
@@ -5165,9 +5177,9 @@ BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_hei
         output_buffer_offset_y += subimage_y_offset;
     }
 
-    gDisplaySwapBuffers = FALSE;
-    gSnapshotNoPost = FALSE;
-    gDepthDirty = TRUE;
+    gDisplaySwapBuffers = false;
+    gSnapshotNoPost = false;
+    gDepthDirty = true;
 
     // POST SNAPSHOT
     if (!gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI))
@@ -5177,7 +5189,7 @@ BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_hei
 
     if (hide_hud)
     {
-        LLPipeline::sShowHUDAttachments = TRUE;
+        LLPipeline::sShowHUDAttachments = true;
     }
 
     /*if (high_res)
@@ -5190,7 +5202,7 @@ BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_hei
     // Note: this formula depends on the number of components being 3.  Not obvious, but it's correct.
     image_width += (image_width * 3) % 4;
 
-    BOOL ret = TRUE ;
+    bool ret = true ;
     // Resize image
     if(llabs(image_width - image_buffer_x) > 4 || llabs(image_height - image_buffer_y) > 4)
     {
@@ -5198,10 +5210,9 @@ BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_hei
     }
     else if(image_width != image_buffer_x || image_height != image_buffer_y)
     {
-        ret = raw->scale( image_width, image_height, FALSE );
+        ret = raw->scale( image_width, image_height, false );
     }
 
-
     setCursor(UI_CURSOR_ARROW);
 
     if (do_rebuild)
@@ -5233,24 +5244,24 @@ BOOL LLViewerWindow::rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_hei
     return ret;
 }
 
-BOOL LLViewerWindow::simpleSnapshot(LLImageRaw* raw, S32 image_width, S32 image_height, const int num_render_passes)
+bool LLViewerWindow::simpleSnapshot(LLImageRaw* raw, S32 image_width, S32 image_height, const int num_render_passes)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_APP;
-    gDisplaySwapBuffers = FALSE;
+    gDisplaySwapBuffers = false;
 
     glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT); // stencil buffer is deprecated | GL_STENCIL_BUFFER_BIT);
     setCursor(UI_CURSOR_WAIT);
 
-    BOOL prev_draw_ui = gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI) ? TRUE : FALSE;
-    if (prev_draw_ui != false)
+    bool prev_draw_ui = gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI);
+    if (prev_draw_ui)
     {
         LLPipeline::toggleRenderDebugFeature(LLPipeline::RENDER_DEBUG_FEATURE_UI);
     }
 
-    BOOL hide_hud = LLPipeline::sShowHUDAttachments;
+    bool hide_hud = LLPipeline::sShowHUDAttachments;
     if (hide_hud)
     {
-        LLPipeline::sShowHUDAttachments = FALSE;
+        LLPipeline::sShowHUDAttachments = false;
     }
 
     LLRect window_rect = getWorldViewRectRaw();
@@ -5291,17 +5302,19 @@ BOOL LLViewerWindow::simpleSnapshot(LLImageRaw* raw, S32 image_width, S32 image_
         // the black flash in between captures when the number
         // of render passes is more than 1. We need to also
         // set it here because code in LLViewerDisplay resets
-        // it to TRUE each time.
-        gDisplaySwapBuffers = FALSE;
+        // it to true each time.
+        gDisplaySwapBuffers = false;
 
         // actually render the scene
         const U32 subfield = 0;
         const bool do_rebuild = true;
         const F32 zoom = 1.0;
-        const bool for_snapshot = TRUE;
+        const bool for_snapshot = true;
         display(do_rebuild, zoom, subfield, for_snapshot);
     }
 
+    LLImageDataSharedLock lock(raw);
+
     glReadPixels(
         0, 0,
         image_width,
@@ -5311,12 +5324,12 @@ BOOL LLViewerWindow::simpleSnapshot(LLImageRaw* raw, S32 image_width, S32 image_
     );
     stop_glerror();
 
-    gDisplaySwapBuffers = FALSE;
-    gDepthDirty = TRUE;
+    gDisplaySwapBuffers = false;
+    gDepthDirty = true;
 
     if (!gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI))
     {
-        if (prev_draw_ui != false)
+        if (prev_draw_ui)
         {
             LLPipeline::toggleRenderDebugFeature(LLPipeline::RENDER_DEBUG_FEATURE_UI);
         }
@@ -5324,7 +5337,7 @@ BOOL LLViewerWindow::simpleSnapshot(LLImageRaw* raw, S32 image_width, S32 image_
 
     if (hide_hud)
     {
-        LLPipeline::sShowHUDAttachments = TRUE;
+        LLPipeline::sShowHUDAttachments = true;
     }
 
     setCursor(UI_CURSOR_ARROW);
@@ -5340,7 +5353,7 @@ BOOL LLViewerWindow::simpleSnapshot(LLImageRaw* raw, S32 image_width, S32 image_
 
 void display_cube_face();
 
-BOOL LLViewerWindow::cubeSnapshot(const LLVector3& origin, LLCubeMapArray* cubearray, S32 cubeIndex, S32 face, F32 near_clip, bool dynamic_render, bool useCustomClipPlane, LLPlane clipPlane)
+bool LLViewerWindow::cubeSnapshot(const LLVector3& origin, LLCubeMapArray* cubearray, S32 cubeIndex, S32 face, F32 near_clip, bool dynamic_render, bool useCustomClipPlane, LLPlane clipPlane)
 {
     // NOTE: implementation derived from LLFloater360Capture::capture360Images() and simpleSnapshot
     LL_PROFILE_ZONE_SCOPED_CATEGORY_APP;
@@ -5402,16 +5415,16 @@ BOOL LLViewerWindow::cubeSnapshot(const LLVector3& origin, LLCubeMapArray* cubea
         }
     }
 
-    BOOL prev_draw_ui = gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI) ? TRUE : FALSE;
-    if (prev_draw_ui != false)
+    bool prev_draw_ui = gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI);
+    if (prev_draw_ui)
     {
         LLPipeline::toggleRenderDebugFeature(LLPipeline::RENDER_DEBUG_FEATURE_UI);
     }
 
-    BOOL hide_hud = LLPipeline::sShowHUDAttachments;
+    bool hide_hud = LLPipeline::sShowHUDAttachments;
     if (hide_hud)
     {
-        LLPipeline::sShowHUDAttachments = FALSE;
+        LLPipeline::sShowHUDAttachments = false;
     }
     LLRect window_rect = getWorldViewRectRaw();
 
@@ -5448,20 +5461,20 @@ BOOL LLViewerWindow::cubeSnapshot(const LLVector3& origin, LLCubeMapArray* cubea
         // the black flash in between captures when the number
         // of render passes is more than 1. We need to also
         // set it here because code in LLViewerDisplay resets
-        // it to TRUE each time.
-        gDisplaySwapBuffers = FALSE;
+        // it to true each time.
+        gDisplaySwapBuffers = false;
 
         // actually render the scene
-        gCubeSnapshot = TRUE;
+        gCubeSnapshot = true;
         display_cube_face();
-        gCubeSnapshot = FALSE;
+        gCubeSnapshot = false;
     }
 
-    gDisplaySwapBuffers = TRUE;
+    gDisplaySwapBuffers = true;
 
     if (!gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI))
     {
-        if (prev_draw_ui != false)
+        if (prev_draw_ui)
         {
             LLPipeline::toggleRenderDebugFeature(LLPipeline::RENDER_DEBUG_FEATURE_UI);
         }
@@ -5480,7 +5493,7 @@ BOOL LLViewerWindow::cubeSnapshot(const LLVector3& origin, LLCubeMapArray* cubea
 
     if (hide_hud)
     {
-        LLPipeline::sShowHUDAttachments = TRUE;
+        LLPipeline::sShowHUDAttachments = true;
     }
 
     gPipeline.resetDrawOrders();
@@ -5616,7 +5629,7 @@ void LLViewerWindow::setup2DViewport(S32 x_offset, S32 y_offset)
 void LLViewerWindow::setup3DRender()
 {
     // setup perspective camera
-    LLViewerCamera::getInstance()->setPerspective(NOT_FOR_SELECTION, mWorldViewRectRaw.mLeft, mWorldViewRectRaw.mBottom,  mWorldViewRectRaw.getWidth(), mWorldViewRectRaw.getHeight(), FALSE, LLViewerCamera::getInstance()->getNear(), MAX_FAR_CLIP*2.f);
+    LLViewerCamera::getInstance()->setPerspective(NOT_FOR_SELECTION, mWorldViewRectRaw.mLeft, mWorldViewRectRaw.mBottom,  mWorldViewRectRaw.getWidth(), mWorldViewRectRaw.getHeight(), false, LLViewerCamera::getInstance()->getNear(), MAX_FAR_CLIP*2.f);
     setup3DViewport();
 }
 
@@ -5646,7 +5659,7 @@ void LLViewerWindow::initTextures(S32 location_id)
     }
 }
 
-void LLViewerWindow::setShowProgress(const BOOL show)
+void LLViewerWindow::setShowProgress(const bool show)
 {
     if (mProgressView)
     {
@@ -5662,7 +5675,7 @@ void LLViewerWindow::setStartupComplete()
     }
 }
 
-BOOL LLViewerWindow::getShowProgress() const
+bool LLViewerWindow::getShowProgress() const
 {
     return (mProgressView && mProgressView->getVisible());
 }
@@ -5691,7 +5704,7 @@ void LLViewerWindow::setProgressPercent(const F32 percent)
     }
 }
 
-void LLViewerWindow::setProgressCancelButtonVisible( BOOL b, const std::string& label )
+void LLViewerWindow::setProgressCancelButtonVisible( bool b, const std::string& label )
 {
     if (mProgressView)
     {
@@ -5712,7 +5725,7 @@ void LLViewerWindow::dumpState()
         << LL_ENDL;
 }
 
-void LLViewerWindow::stopGL(BOOL save_state)
+void LLViewerWindow::stopGL(bool save_state)
 {
     //Note: --bao
     //if not necessary, do not change the order of the function calls in this function.
@@ -5761,7 +5774,7 @@ void LLViewerWindow::stopGL(BOOL save_state)
         gTextureList.destroyGL(save_state);
         stop_glerror();
 
-        gGLManager.mIsDisabled = TRUE;
+        gGLManager.mIsDisabled = true;
         stop_glerror();
 
         //unload shader's
@@ -5782,7 +5795,7 @@ void LLViewerWindow::restoreGL(const std::string& progress_message)
     if (gGLManager.mIsDisabled)
     {
         LL_INFOS() << "Restoring GL..." << LL_ENDL;
-        gGLManager.mIsDisabled = FALSE;
+        gGLManager.mIsDisabled = false;
 
         initGLDefaults();
         LLGLState::restoreGL();
@@ -5802,8 +5815,8 @@ void LLViewerWindow::restoreGL(const std::string& progress_message)
         LLVOAvatar::restoreGL();
         LLVOPartGroup::restoreGL();
 
-        gResizeScreenTexture = TRUE;
-        gWindowResized = TRUE;
+        gResizeScreenTexture = true;
+        gWindowResized = true;
 
         if (isAgentAvatarValid() && gAgentAvatarp->isEditingAppearance())
         {
@@ -5813,8 +5826,8 @@ void LLViewerWindow::restoreGL(const std::string& progress_message)
         if (!progress_message.empty())
         {
             gRestoreGLTimer.reset();
-            gRestoreGL = TRUE;
-            setShowProgress(TRUE);
+            gRestoreGL = true;
+            setShowProgress(true);
             setProgressString(progress_message);
         }
         LL_INFOS() << "...Restoring GL done" << LL_ENDL;
@@ -5864,7 +5877,7 @@ void LLViewerWindow::checkSettings()
     }
 }
 
-void LLViewerWindow::restartDisplay(BOOL show_progress_bar)
+void LLViewerWindow::restartDisplay(bool show_progress_bar)
 {
     LL_INFOS() << "Restaring GL" << LL_ENDL;
     stopGL();
@@ -5878,11 +5891,11 @@ void LLViewerWindow::restartDisplay(BOOL show_progress_bar)
     }
 }
 
-BOOL LLViewerWindow::changeDisplaySettings(LLCoordScreen size, BOOL enable_vsync, BOOL show_progress_bar)
+bool LLViewerWindow::changeDisplaySettings(LLCoordScreen size, bool enable_vsync, bool show_progress_bar)
 {
-    //BOOL was_maximized = gSavedSettings.getBOOL("WindowMaximized");
+    //bool was_maximized = gSavedSettings.getBOOL("WindowMaximized");
 
-    //gResizeScreenTexture = TRUE;
+    //gResizeScreenTexture = true;
 
 
     //U32 fsaa = gSavedSettings.getU32("RenderFSAASamples");
@@ -5896,7 +5909,7 @@ BOOL LLViewerWindow::changeDisplaySettings(LLCoordScreen size, BOOL enable_vsync
 
     //if (fsaa == old_fsaa)
     {
-        return TRUE;
+        return true;
     }
 
 /*
@@ -5904,14 +5917,14 @@ BOOL LLViewerWindow::changeDisplaySettings(LLCoordScreen size, BOOL enable_vsync
     // Close floaters that don't handle settings change
     LLFloaterReg::hideInstance("snapshot");
 
-    BOOL result_first_try = FALSE;
-    BOOL result_second_try = FALSE;
+    bool result_first_try = false;
+    bool result_second_try = false;
 
     LLFocusableElement* keyboard_focus = gFocusMgr.getKeyboardFocus();
     send_agent_pause();
     LL_INFOS() << "Stopping GL during changeDisplaySettings" << LL_ENDL;
     stopGL();
-    mIgnoreActivate = TRUE;
+    mIgnoreActivate = true;
     LLCoordScreen old_size;
     LLCoordScreen old_pos;
     mWindow->getSize(&old_size);
@@ -5929,8 +5942,8 @@ BOOL LLViewerWindow::changeDisplaySettings(LLCoordScreen size, BOOL enable_vsync
         {
             // we are stuck...try once again with a minimal resolution?
             send_agent_resume();
-            mIgnoreActivate = FALSE;
-            return FALSE;
+            mIgnoreActivate = false;
+            return false;
         }
     }
     send_agent_resume();
@@ -5954,7 +5967,7 @@ BOOL LLViewerWindow::changeDisplaySettings(LLCoordScreen size, BOOL enable_vsync
         size = old_size; // for reshape below
     }
 
-    BOOL success = result_first_try || result_second_try;
+    bool success = result_first_try || result_second_try;
 
     if (success)
     {
@@ -5972,7 +5985,7 @@ BOOL LLViewerWindow::changeDisplaySettings(LLCoordScreen size, BOOL enable_vsync
         }
     }
 
-    mIgnoreActivate = FALSE;
+    mIgnoreActivate = false;
     gFocusMgr.setKeyboardFocus(keyboard_focus);
 
     return success;
@@ -6045,7 +6058,7 @@ LLRect LLViewerWindow::getChatConsoleRect()
 
     console_rect.mLeft   += CONSOLE_PADDING_LEFT;
 
-    static const BOOL CHAT_FULL_WIDTH = gSavedSettings.getBOOL("ChatFullWidth");
+    static const bool CHAT_FULL_WIDTH = gSavedSettings.getBOOL("ChatFullWidth");
 
     if (CHAT_FULL_WIDTH)
     {
@@ -6079,7 +6092,22 @@ void LLViewerWindow::reshapeStatusBarContainer()
         // collapse status_bar_container
         new_height -= nav_bar_container->getRect().getHeight();
     }
-    status_bar_container->reshape(new_width, new_height, TRUE);
+    status_bar_container->reshape(new_width, new_height, true);
+}
+
+void LLViewerWindow::resetStatusBarContainer()
+{
+    LLNavigationBar* navbar = LLNavigationBar::getInstance();
+    if (gSavedSettings.getBOOL("ShowNavbarNavigationPanel") || navbar->getVisible())
+    {
+        // was previously showing navigation bar
+        LLView* nav_bar_container = getRootView()->getChild<LLView>("nav_bar_container");
+        LLPanel* status_bar_container = getRootView()->getChild<LLPanel>("status_bar_container");
+        S32 new_height = status_bar_container->getRect().getHeight();
+        S32 new_width = status_bar_container->getRect().getWidth();
+        new_height -= nav_bar_container->getRect().getHeight();
+        status_bar_container->reshape(new_width, new_height, true);
+    }
 }
 //----------------------------------------------------------------------------
 
@@ -6090,7 +6118,7 @@ void LLViewerWindow::setUIVisibility(bool visible)
 
     if (!visible)
     {
-        gAgentCamera.changeCameraToThirdPerson(FALSE);
+        gAgentCamera.changeCameraToThirdPerson(false);
         gFloaterView->hideAllFloaters();
     }
     else
@@ -6103,8 +6131,8 @@ void LLViewerWindow::setUIVisibility(bool visible)
         gToolBarView->setToolBarsVisible(visible);
     }
 
-    LLNavigationBar::getInstance()->setVisible(visible ? gSavedSettings.getBOOL("ShowNavbarNavigationPanel") : FALSE);
-    LLPanelTopInfoBar::getInstance()->setVisible(visible? gSavedSettings.getBOOL("ShowMiniLocationPanel") : FALSE);
+    LLNavigationBar::getInstance()->setVisible(visible ? gSavedSettings.getBOOL("ShowNavbarNavigationPanel") : false);
+    LLPanelTopInfoBar::getInstance()->setVisible(visible? gSavedSettings.getBOOL("ShowMiniLocationPanel") : false);
     mRootView->getChildView("status_bar_container")->setVisible(visible);
 }
 
@@ -6121,7 +6149,7 @@ LLPickInfo::LLPickInfo()
     : mKeyMask(MASK_NONE),
       mPickCallback(NULL),
       mPickType(PICK_INVALID),
-      mWantSurfaceInfo(FALSE),
+      mWantSurfaceInfo(false),
       mObjectFace(-1),
       mUVCoords(-1.f, -1.f),
       mSTCoords(-1.f, -1.f),
@@ -6131,20 +6159,20 @@ LLPickInfo::LLPickInfo()
       mTangent(),
       mBinormal(),
       mHUDIcon(NULL),
-      mPickTransparent(FALSE),
-      mPickRigged(FALSE),
-      mPickParticle(FALSE)
+      mPickTransparent(false),
+      mPickRigged(false),
+      mPickParticle(false)
 {
 }
 
 LLPickInfo::LLPickInfo(const LLCoordGL& mouse_pos,
     MASK keyboard_mask,
-    BOOL pick_transparent,
-    BOOL pick_rigged,
-    BOOL pick_particle,
-    BOOL pick_reflection_probe,
-    BOOL pick_uv_coords,
-    BOOL pick_unselectable,
+    bool pick_transparent,
+    bool pick_rigged,
+    bool pick_particle,
+    bool pick_reflection_probe,
+    bool pick_uv_coords,
+    bool pick_unselectable,
     void (*pick_callback)(const LLPickInfo& pick_info))
     : mMousePt(mouse_pos),
     mKeyMask(keyboard_mask),
diff --git a/indra/newview/llviewerwindow.h b/indra/newview/llviewerwindow.h
index 93c78cbacc..1f34495f23 100644
--- a/indra/newview/llviewerwindow.h
+++ b/indra/newview/llviewerwindow.h
@@ -91,12 +91,12 @@ public:
     LLPickInfo();
     LLPickInfo(const LLCoordGL& mouse_pos,
         MASK keyboard_mask,
-        BOOL pick_transparent,
-        BOOL pick_rigged,
-        BOOL pick_particle,
-        BOOL pick_reflection_probe,
-        BOOL pick_surface_info,
-        BOOL pick_unselectable,
+        bool pick_transparent,
+        bool pick_rigged,
+        bool pick_particle,
+        bool pick_reflection_probe,
+        bool pick_surface_info,
+        bool pick_unselectable,
         void (*pick_callback)(const LLPickInfo& pick_info));
 
     void fetchResults();
@@ -129,17 +129,17 @@ public:
     LLVector3       mNormal;
     LLVector4       mTangent;
     LLVector3       mBinormal;
-    BOOL            mPickTransparent;
-    BOOL            mPickRigged;
-    BOOL            mPickParticle;
-    BOOL            mPickUnselectable;
-    BOOL            mPickReflectionProbe = FALSE;
+    bool            mPickTransparent;
+    bool            mPickRigged;
+    bool            mPickParticle;
+    bool            mPickUnselectable;
+    bool            mPickReflectionProbe = false;
     void            getSurfaceInfo();
 
 private:
     void            updateXYCoords();
 
-    BOOL            mWantSurfaceInfo;   // do we populate mUVCoord, mNormal, mBinormal?
+    bool            mWantSurfaceInfo;   // do we populate mUVCoord, mNormal, mBinormal?
 
 };
 
@@ -184,28 +184,29 @@ public:
     void            handlePieMenu(S32 x, S32 y, MASK mask);
 
     void            reshapeStatusBarContainer();
+    void            resetStatusBarContainer(); // undo changes done by resetStatusBarContainer on initWorldUI()
 
-    BOOL handleAnyMouseClick(LLWindow *window, LLCoordGL pos, MASK mask, EMouseClickType clicktype, BOOL down, bool &is_toolmgr_action);
+    bool handleAnyMouseClick(LLWindow *window, LLCoordGL pos, MASK mask, EMouseClickType clicktype, bool down, bool &is_toolmgr_action);
 
     //
     // LLWindowCallback interface implementation
     //
-    /*virtual*/ BOOL handleTranslatedKeyDown(KEY key,  MASK mask, BOOL repeated);
-    /*virtual*/ BOOL handleTranslatedKeyUp(KEY key,  MASK mask);
-    /*virtual*/ void handleScanKey(KEY key, BOOL key_down, BOOL key_up, BOOL key_level);
-    /*virtual*/ BOOL handleUnicodeChar(llwchar uni_char, MASK mask);    // NOT going to handle extended
-    /*virtual*/ BOOL handleUnicodeString(char *uni_str, bool editing);
-    /*virtual*/ BOOL handleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
-    /*virtual*/ BOOL handleMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask);
-    /*virtual*/ BOOL handleCloseRequest(LLWindow *window);
+    /*virtual*/ bool handleTranslatedKeyDown(KEY key,  MASK mask, bool repeated);
+    /*virtual*/ bool handleTranslatedKeyUp(KEY key,  MASK mask);
+    /*virtual*/ void handleScanKey(KEY key, bool key_down, bool key_up, bool key_level);
+    /*virtual*/ bool handleUnicodeChar(llwchar uni_char, MASK mask);    // NOT going to handle extended
+    /*virtual*/ bool handleUnicodeString(char *uni_str, bool editing);
+    /*virtual*/ bool handleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
+    /*virtual*/ bool handleMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask);
+    /*virtual*/ bool handleCloseRequest(LLWindow *window);
     /*virtual*/ void handleQuit(LLWindow *window);
-    /*virtual*/ BOOL handleRightMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
-    /*virtual*/ BOOL handleRightMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask);
-    /*virtual*/ BOOL handleMiddleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
-    /*virtual*/ BOOL handleMiddleMouseUp(LLWindow *window, LLCoordGL pos, MASK mask);
-    /*virtual*/ BOOL handleOtherMouseDown(LLWindow *window, LLCoordGL pos, MASK mask, S32 button);
-    /*virtual*/ BOOL handleOtherMouseUp(LLWindow *window, LLCoordGL pos, MASK mask, S32 button);
-    BOOL handleOtherMouse(LLWindow *window, LLCoordGL pos, MASK mask, S32 button, bool down);
+    /*virtual*/ bool handleRightMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
+    /*virtual*/ bool handleRightMouseUp(LLWindow *window,  LLCoordGL pos, MASK mask);
+    /*virtual*/ bool handleMiddleMouseDown(LLWindow *window,  LLCoordGL pos, MASK mask);
+    /*virtual*/ bool handleMiddleMouseUp(LLWindow *window, LLCoordGL pos, MASK mask);
+    /*virtual*/ bool handleOtherMouseDown(LLWindow *window, LLCoordGL pos, MASK mask, S32 button);
+    /*virtual*/ bool handleOtherMouseUp(LLWindow *window, LLCoordGL pos, MASK mask, S32 button);
+    bool handleOtherMouse(LLWindow *window, LLCoordGL pos, MASK mask, S32 button, bool down);
     /*virtual*/ LLWindowCallbacks::DragNDropResult handleDragNDrop(LLWindow *window, LLCoordGL pos, MASK mask, LLWindowCallbacks::DragNDropAction action, std::string data);
                 void handleMouseMove(LLWindow *window,  LLCoordGL pos, MASK mask);
                 void handleMouseDragged(LLWindow *window,  LLCoordGL pos, MASK mask);
@@ -213,20 +214,20 @@ public:
     /*virtual*/ void handleResize(LLWindow *window,  S32 x,  S32 y);
     /*virtual*/ void handleFocus(LLWindow *window);
     /*virtual*/ void handleFocusLost(LLWindow *window);
-    /*virtual*/ BOOL handleActivate(LLWindow *window, BOOL activated);
-    /*virtual*/ BOOL handleActivateApp(LLWindow *window, BOOL activating);
+    /*virtual*/ bool handleActivate(LLWindow *window, bool activated);
+    /*virtual*/ bool handleActivateApp(LLWindow *window, bool activating);
     /*virtual*/ void handleMenuSelect(LLWindow *window,  S32 menu_item);
-    /*virtual*/ BOOL handlePaint(LLWindow *window,  S32 x,  S32 y,  S32 width,  S32 height);
+    /*virtual*/ bool handlePaint(LLWindow *window,  S32 x,  S32 y,  S32 width,  S32 height);
     /*virtual*/ void handleScrollWheel(LLWindow *window,  S32 clicks);
     /*virtual*/ void handleScrollHWheel(LLWindow *window,  S32 clicks);
-    /*virtual*/ BOOL handleDoubleClick(LLWindow *window,  LLCoordGL pos, MASK mask);
+    /*virtual*/ bool handleDoubleClick(LLWindow *window,  LLCoordGL pos, MASK mask);
     /*virtual*/ void handleWindowBlock(LLWindow *window);
     /*virtual*/ void handleWindowUnblock(LLWindow *window);
     /*virtual*/ void handleDataCopy(LLWindow *window, S32 data_type, void *data);
-    /*virtual*/ BOOL handleTimerEvent(LLWindow *window);
-    /*virtual*/ BOOL handleDeviceChange(LLWindow *window);
-    /*virtual*/ BOOL handleDPIChanged(LLWindow *window, F32 ui_scale_factor, S32 window_width, S32 window_height);
-    /*virtual*/ BOOL handleWindowDidChangeScreen(LLWindow *window);
+    /*virtual*/ bool handleTimerEvent(LLWindow *window);
+    /*virtual*/ bool handleDeviceChange(LLWindow *window);
+    /*virtual*/ bool handleDPIChanged(LLWindow *window, F32 ui_scale_factor, S32 window_width, S32 window_height);
+    /*virtual*/ bool handleWindowDidChangeScreen(LLWindow *window);
 
     /*virtual*/ void handlePingWatchdog(LLWindow *window, const char * msg);
     /*virtual*/ void handlePauseWatchdog(LLWindow *window);
@@ -281,9 +282,9 @@ public:
     S32             getCurrentMouseDY()     const   { return mCurrentMouseDelta.mY; }
     LLCoordGL       getCurrentMouseDelta()  const   { return mCurrentMouseDelta; }
     static LLTrace::SampleStatHandle<>* getMouseVelocityStat()      { return &sMouseVelocityStat; }
-    BOOL            getLeftMouseDown()  const   { return mLeftMouseDown; }
-    BOOL            getMiddleMouseDown()    const   { return mMiddleMouseDown; }
-    BOOL            getRightMouseDown() const   { return mRightMouseDown; }
+    bool            getLeftMouseDown()  const   { return mLeftMouseDown; }
+    bool            getMiddleMouseDown()    const   { return mMiddleMouseDown; }
+    bool            getRightMouseDown() const   { return mRightMouseDown; }
 
     const LLPickInfo&   getLastPick() const { return mLastPick; }
 
@@ -298,7 +299,7 @@ public:
 
 
     // Is window of our application frontmost?
-    BOOL            getActive() const           { return mActive; }
+    bool            getActive() const           { return mActive; }
 
     const std::string&  getInitAlert() { return mInitAlert; }
 
@@ -310,16 +311,16 @@ public:
     void            setCursor( ECursorType c );
     void            showCursor();
     void            hideCursor();
-    BOOL            getCursorHidden() { return mCursorHidden; }
+    bool            getCursorHidden() { return mCursorHidden; }
     void            moveCursorToCenter();                               // move to center of window
 
     void            initTextures(S32 location_id);
-    void            setShowProgress(const BOOL show);
-    BOOL            getShowProgress() const;
+    void            setShowProgress(const bool show);
+    bool            getShowProgress() const;
     void            setProgressString(const std::string& string);
     void            setProgressPercent(const F32 percent);
     void            setProgressMessage(const std::string& msg);
-    void            setProgressCancelButtonVisible( BOOL b, const std::string& label = LLStringUtil::null );
+    void            setProgressCancelButtonVisible( bool b, const std::string& label = LLStringUtil::null );
     LLProgressView *getProgressView() const;
     void            revealIntroPanel();
     void            setStartupComplete();
@@ -335,8 +336,8 @@ public:
     LLView*         getToolBarHolder() { return mToolBarHolder.get(); }
     LLView*         getHintHolder() { return mHintHolder.get(); }
     LLView*         getLoginPanelHolder() { return mLoginPanelHolder.get(); }
-    BOOL            handleKey(KEY key, MASK mask);
-    BOOL            handleKeyUp(KEY key, MASK mask);
+    bool            handleKey(KEY key, MASK mask);
+    bool            handleKeyUp(KEY key, MASK mask);
     void            handleScrollWheel   (S32 clicks);
     void            handleScrollHWheel  (S32 clicks);
 
@@ -346,7 +347,7 @@ public:
     void            clearPopups();
 
     // Hide normal UI when a logon fails, re-show everything when logon is attempted again
-    void            setNormalControlsVisible( BOOL visible );
+    void            setNormalControlsVisible( bool visible );
     void            setMenuBackgroundColor(bool god_mode = false, bool dev_grid = false);
 
     void            reshape(S32 width, S32 height);
@@ -363,11 +364,11 @@ public:
     // snapshot functionality.
     // perhaps some of this should move to llfloatershapshot?  -MG
 
-    BOOL            saveSnapshot(const std::string&  filename, S32 image_width, S32 image_height, BOOL show_ui = TRUE, BOOL show_hud = TRUE, BOOL do_rebuild = FALSE, LLSnapshotModel::ESnapshotLayerType type = LLSnapshotModel::SNAPSHOT_TYPE_COLOR, LLSnapshotModel::ESnapshotFormat format = LLSnapshotModel::SNAPSHOT_FORMAT_BMP);
-    BOOL            rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_height, BOOL keep_window_aspect = TRUE, BOOL is_texture = FALSE,
-        BOOL show_ui = TRUE, BOOL show_hud = TRUE, BOOL do_rebuild = FALSE, BOOL no_post = FALSE, LLSnapshotModel::ESnapshotLayerType type = LLSnapshotModel::SNAPSHOT_TYPE_COLOR, S32 max_size = MAX_SNAPSHOT_IMAGE_SIZE);
+    bool            saveSnapshot(const std::string&  filename, S32 image_width, S32 image_height, bool show_ui = true, bool show_hud = true, bool do_rebuild = false, LLSnapshotModel::ESnapshotLayerType type = LLSnapshotModel::SNAPSHOT_TYPE_COLOR, LLSnapshotModel::ESnapshotFormat format = LLSnapshotModel::SNAPSHOT_FORMAT_BMP);
+    bool            rawSnapshot(LLImageRaw *raw, S32 image_width, S32 image_height, bool keep_window_aspect = true, bool is_texture = false,
+        bool show_ui = true, bool show_hud = true, bool do_rebuild = false, bool no_post = false, LLSnapshotModel::ESnapshotLayerType type = LLSnapshotModel::SNAPSHOT_TYPE_COLOR, S32 max_size = MAX_SNAPSHOT_IMAGE_SIZE);
 
-    BOOL            simpleSnapshot(LLImageRaw *raw, S32 image_width, S32 image_height, const int num_render_passes);
+    bool            simpleSnapshot(LLImageRaw *raw, S32 image_width, S32 image_height, const int num_render_passes);
 
 
 
@@ -377,20 +378,20 @@ public:
     // index - cube index in the array to use (cube index, not face-layer)
     // face - which cube face to update
     // near_clip - near clip setting to use
-    BOOL cubeSnapshot(const LLVector3 &origin, LLCubeMapArray *cubearray, S32 index, S32 face, F32 near_clip, bool render_avatars,
+    bool cubeSnapshot(const LLVector3 &origin, LLCubeMapArray *cubearray, S32 index, S32 face, F32 near_clip, bool render_avatars,
                       bool customCullingPlane = false, LLPlane cullingPlane = LLPlane(LLVector3(0, 0, 0), LLVector3(0, 0, 1)));
 
 
     // special implementation of simpleSnapshot for reflection maps
-    BOOL            reflectionSnapshot(LLImageRaw* raw, S32 image_width, S32 image_height, const int num_render_passes);
+    bool            reflectionSnapshot(LLImageRaw* raw, S32 image_width, S32 image_height, const int num_render_passes);
 
-    BOOL            thumbnailSnapshot(LLImageRaw *raw, S32 preview_width, S32 preview_height, BOOL show_ui, BOOL show_hud, BOOL do_rebuild, BOOL no_post, LLSnapshotModel::ESnapshotLayerType type);
-    BOOL            isSnapshotLocSet() const;
+    bool            thumbnailSnapshot(LLImageRaw *raw, S32 preview_width, S32 preview_height, bool show_ui, bool show_hud, bool do_rebuild, bool no_post, LLSnapshotModel::ESnapshotLayerType type);
+    bool            isSnapshotLocSet() const;
     void            resetSnapshotLoc() const;
 
     typedef boost::signals2::signal<void(void)> snapshot_saved_signal_t;
 
-    void            saveImageNumbered(LLImageFormatted *image, BOOL force_picker, const snapshot_saved_signal_t::slot_type& success_cb, const snapshot_saved_signal_t::slot_type& failure_cb);
+    void            saveImageNumbered(LLImageFormatted *image, bool force_picker, const snapshot_saved_signal_t::slot_type& success_cb, const snapshot_saved_signal_t::slot_type& failure_cb);
     void            onDirectorySelected(const std::vector<std::string>& filenames, LLImageFormatted *image, const snapshot_saved_signal_t::slot_type& success_cb, const snapshot_saved_signal_t::slot_type& failure_cb);
     void            saveImageLocal(LLImageFormatted *image, const snapshot_saved_signal_t::slot_type& success_cb, const snapshot_saved_signal_t::slot_type& failure_cb);
     void            onSelectionFailure(const snapshot_saved_signal_t::slot_type& failure_cb);
@@ -402,7 +403,7 @@ public:
     void            playSnapshotAnimAndSound();
 
     // draws selection boxes around selected objects, must call displayObjects first
-    void            renderSelections( BOOL for_gl_pick, BOOL pick_parcel_walls, BOOL for_hud );
+    void            renderSelections( bool for_gl_pick, bool pick_parcel_walls, bool for_hud );
     void            performPick();
     void            returnEmptyPicks();
 
@@ -410,21 +411,21 @@ public:
                                 S32 y_from_bot,
                                 MASK mask,
                                 void (*callback)(const LLPickInfo& pick_info),
-                                BOOL pick_transparent = FALSE,
-                                BOOL pick_rigged = FALSE,
-                                BOOL pick_unselectable = FALSE,
-                                BOOL pick_reflection_probes = FALSE);
-    LLPickInfo      pickImmediate(S32 x, S32 y, BOOL pick_transparent, BOOL pick_rigged = FALSE, BOOL pick_particle = FALSE, BOOL pick_unselectable = TRUE, BOOL pick_reflection_probe = FALSE);
+                                bool pick_transparent = false,
+                                bool pick_rigged = false,
+                                bool pick_unselectable = false,
+                                bool pick_reflection_probes = false);
+    LLPickInfo      pickImmediate(S32 x, S32 y, bool pick_transparent, bool pick_rigged = false, bool pick_particle = false, bool pick_unselectable = true, bool pick_reflection_probe = false);
     LLHUDIcon* cursorIntersectIcon(S32 mouse_x, S32 mouse_y, F32 depth,
                                            LLVector4a* intersection);
 
     LLViewerObject* cursorIntersect(S32 mouse_x = -1, S32 mouse_y = -1, F32 depth = 512.f,
                                     LLViewerObject *this_object = NULL,
                                     S32 this_face = -1,
-                                    BOOL pick_transparent = FALSE,
-                                    BOOL pick_rigged = FALSE,
-                                    BOOL pick_unselectable = TRUE,
-                                    BOOL pick_reflection_probe = TRUE,
+                                    bool pick_transparent = false,
+                                    bool pick_rigged = false,
+                                    bool pick_unselectable = true,
+                                    bool pick_reflection_probe = true,
                                     S32* face_hit = NULL,
                                     S32* gltf_node_hit = nullptr,
                                     S32* gltf_primitive_hit = nullptr,
@@ -444,10 +445,10 @@ public:
     //const LLVector3d& lastNonFloraObjectHitOffset();
 
     // mousePointOnLand() returns true if found point
-    BOOL            mousePointOnLandGlobal(const S32 x, const S32 y, LLVector3d *land_pos_global, BOOL ignore_distance = FALSE);
-    BOOL            mousePointOnPlaneGlobal(LLVector3d& point, const S32 x, const S32 y, const LLVector3d &plane_point, const LLVector3 &plane_normal);
+    bool            mousePointOnLandGlobal(const S32 x, const S32 y, LLVector3d *land_pos_global, bool ignore_distance = false);
+    bool            mousePointOnPlaneGlobal(LLVector3d& point, const S32 x, const S32 y, const LLVector3d &plane_point, const LLVector3 &plane_normal);
     LLVector3d      clickPointInWorldGlobal(const S32 x, const S32 y_from_bot, LLViewerObject* clicked_object) const;
-    BOOL            clickPointOnSurfaceGlobal(const S32 x, const S32 y, LLViewerObject *objectp, LLVector3d &point_global) const;
+    bool            clickPointOnSurfaceGlobal(const S32 x, const S32 y, LLViewerObject *objectp, LLVector3d &point_global) const;
 
     // Prints window implementation details
     void            dumpState();
@@ -455,9 +456,9 @@ public:
     // handle shutting down GL and bringing it back up
     void            requestResolutionUpdate();
     void            checkSettings();
-    void            restartDisplay(BOOL show_progress_bar);
-    BOOL            changeDisplaySettings(LLCoordScreen size, BOOL enable_vsync, BOOL show_progress_bar);
-    BOOL            getIgnoreDestroyWindow() { return mIgnoreActivate; }
+    void            restartDisplay(bool show_progress_bar);
+    bool            changeDisplaySettings(LLCoordScreen size, bool enable_vsync, bool show_progress_bar);
+    bool            getIgnoreDestroyWindow() { return mIgnoreActivate; }
     F32             getWorldViewAspectRatio() const;
     const LLVector2& getDisplayScale() const { return mDisplayScale; }
     void            calcDisplayScale();
@@ -471,7 +472,7 @@ private:
     void            switchToolByMask(MASK mask);
     void            destroyWindow();
     void            drawMouselookInstructions();
-    void            stopGL(BOOL save_state = TRUE);
+    void            stopGL(bool save_state = true);
     void            restoreGL(const std::string& progress_message = LLStringUtil::null);
     void            initFonts(F32 zoom_factor = 1.f);
     void            schedulePick(LLPickInfo& pick_info);
@@ -498,9 +499,9 @@ private:
     LLCoordGL       mCurrentMousePoint;         // last mouse position in GL coords
     LLCoordGL       mLastMousePoint;        // Mouse point at last frame.
     LLCoordGL       mCurrentMouseDelta;     //amount mouse moved this frame
-    BOOL            mLeftMouseDown;
-    BOOL            mMiddleMouseDown;
-    BOOL            mRightMouseDown;
+    bool            mLeftMouseDown;
+    bool            mMiddleMouseDown;
+    bool            mRightMouseDown;
 
     LLProgressView  *mProgressView;
 
@@ -509,9 +510,9 @@ private:
     std::string     mLastToolTipMessage;
     LLRect          mToolTipStickyRect;         // Once a tool tip is shown, it will stay visible until the mouse leaves this rect.
 
-    BOOL            mMouseInWindow;             // True if the mouse is over our window or if we have captured the mouse.
-    BOOL            mFocusCycleMode;
-    BOOL            mAllowMouseDragging;
+    bool            mMouseInWindow;             // True if the mouse is over our window or if we have captured the mouse.
+    bool            mFocusCycleMode;
+    bool            mAllowMouseDragging;
     LLFrameTimer    mMouseDownTimer;
     typedef std::set<LLHandle<LLView> > view_handle_set_t;
     view_handle_set_t mMouseHoverViews;
@@ -519,8 +520,8 @@ private:
     // Variables used for tool override switching based on modifier keys.  JC
     MASK            mLastMask;          // used to detect changes in modifier mask
     LLTool*         mToolStored;        // the tool we're overriding
-    BOOL            mHideCursorPermanent;   // true during drags, mouselook
-    BOOL            mCursorHidden;
+    bool            mHideCursorPermanent;   // true during drags, mouselook
+    bool            mCursorHidden;
     LLPickInfo      mLastPick;
     std::vector<LLPickInfo> mPicks;
     LLRect          mPickScreenRegion; // area of frame buffer for rendering pick frames (generally follows mouse to avoid going offscreen)
@@ -528,7 +529,7 @@ private:
 
     std::string     mOverlayTitle;      // Used for special titles such as "Second Life - Special E3 2003 Beta"
 
-    BOOL            mIgnoreActivate;
+    bool            mIgnoreActivate;
 
     std::string     mInitAlert;         // Window / GL initialization requires an alert
 
@@ -573,9 +574,9 @@ extern S32              gDebugRaycastFaceHit;
 extern LLVector4a       gDebugRaycastStart;
 extern LLVector4a       gDebugRaycastEnd;
 
-extern BOOL         gDisplayCameraPos;
-extern BOOL         gDisplayWindInfo;
-extern BOOL         gDisplayFOV;
-extern BOOL         gDisplayBadge;
+extern bool         gDisplayCameraPos;
+extern bool         gDisplayWindInfo;
+extern bool         gDisplayFOV;
+extern bool         gDisplayBadge;
 
 #endif
diff --git a/indra/newview/llvlcomposition.cpp b/indra/newview/llvlcomposition.cpp
index 1ffbf20410..ba255f2b24 100644
--- a/indra/newview/llvlcomposition.cpp
+++ b/indra/newview/llvlcomposition.cpp
@@ -115,19 +115,29 @@ LLTerrainMaterials::~LLTerrainMaterials()
     unboost();
 }
 
-BOOL LLTerrainMaterials::generateMaterials()
+void LLTerrainMaterials::apply(const LLModifyRegion& other)
 {
-    if (texturesReady(true, true))
+    for (S32 i = 0; i < LLTerrainMaterials::ASSET_COUNT; ++i)
     {
-        return TRUE;
+        const LLGLTFMaterial* other_override = other.getMaterialOverride(i);
+        LLGLTFMaterial* material_override = other_override ? new LLGLTFMaterial(*other_override) : nullptr;
+        setMaterialOverride(i, material_override);
+    }
+}
+
+bool LLTerrainMaterials::generateMaterials()
+{
+    if (makeTexturesReady(true, true))
+    {
+        return true;
     }
 
-    if (materialsReady(true, true))
+    if (makeMaterialsReady(true, true))
     {
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLTerrainMaterials::boost()
@@ -188,24 +198,39 @@ void LLTerrainMaterials::setDetailAssetID(S32 asset, const LLUUID& id)
     mDetailTextures[asset] = fetch_terrain_texture(id);
     LLPointer<LLFetchedGLTFMaterial>& mat = mDetailMaterials[asset];
     mat = id.isNull() ? nullptr : gGLTFMaterialList.getMaterial(id);
+    mDetailRenderMaterials[asset] = nullptr;
     mMaterialTexturesSet[asset] = false;
 }
 
+const LLGLTFMaterial* LLTerrainMaterials::getMaterialOverride(S32 asset) const
+{
+    return mDetailMaterialOverrides[asset];
+}
+
+void LLTerrainMaterials::setMaterialOverride(S32 asset, LLGLTFMaterial* mat_override)
+{
+    // Non-null overrides must be nontrivial. Otherwise, please set the override to null instead.
+    llassert(!mat_override || *mat_override != LLGLTFMaterial::sDefault);
+
+    mDetailMaterialOverrides[asset] = mat_override;
+    mDetailRenderMaterials[asset] = nullptr;
+}
+
 LLTerrainMaterials::Type LLTerrainMaterials::getMaterialType()
 {
     LL_PROFILE_ZONE_SCOPED;
 
-    const BOOL use_textures = texturesReady(false, false) || !materialsReady(false, false);
+    const bool use_textures = makeTexturesReady(false, false) || !makeMaterialsReady(false, false);
     return use_textures ? Type::TEXTURE : Type::PBR;
 }
 
-bool LLTerrainMaterials::texturesReady(bool boost, bool strict)
+bool LLTerrainMaterials::makeTexturesReady(bool boost, bool strict)
 {
     bool ready[ASSET_COUNT];
-    // *NOTE: Calls to textureReady may boost textures. Do not early-return.
+    // *NOTE: Calls to makeTextureReady may boost textures. Do not early-return.
     for (S32 i = 0; i < ASSET_COUNT; i++)
     {
-        ready[i] = mDetailTextures[i].notNull() && textureReady(mDetailTextures[i], boost);
+        ready[i] = mDetailTextures[i].notNull() && makeTextureReady(mDetailTextures[i], boost);
     }
 
     bool one_ready = false;
@@ -221,13 +246,36 @@ bool LLTerrainMaterials::texturesReady(bool boost, bool strict)
     return one_ready;
 }
 
-bool LLTerrainMaterials::materialsReady(bool boost, bool strict)
+namespace
+{
+    bool material_asset_ready(LLFetchedGLTFMaterial* mat) { return mat && mat->isLoaded(); }
+};
+
+bool LLTerrainMaterials::makeMaterialsReady(bool boost, bool strict)
 {
     bool ready[ASSET_COUNT];
-    // *NOTE: Calls to materialReady may boost materials/textures. Do not early-return.
+    // *NOTE: This section may boost materials/textures. Do not early-return if ready[i] is false.
     for (S32 i = 0; i < ASSET_COUNT; i++)
     {
-        ready[i] = materialReady(mDetailMaterials[i], mMaterialTexturesSet[i], boost, strict);
+        ready[i] = false;
+        LLPointer<LLFetchedGLTFMaterial>& mat = mDetailMaterials[i];
+        if (!material_asset_ready(mat)) { continue; }
+
+        LLPointer<LLFetchedGLTFMaterial>& render_mat = mDetailRenderMaterials[i];
+        if (!render_mat)
+        {
+            render_mat = new LLFetchedGLTFMaterial();
+            *render_mat = *mat;
+            // This render_mat is effectively already loaded, because it gets its data from mat.
+
+            LLPointer<LLGLTFMaterial>& override_mat = mDetailMaterialOverrides[i];
+            if (override_mat)
+            {
+                render_mat->applyOverride(*override_mat);
+            }
+        }
+
+        ready[i] = materialTexturesReady(render_mat, mMaterialTexturesSet[i], boost, strict);
     }
 
 #if 1
@@ -267,7 +315,7 @@ bool LLTerrainMaterials::materialsReady(bool boost, bool strict)
 // Boost the texture loading priority
 // Return true when ready to use (i.e. texture is sufficiently loaded)
 // static
-bool LLTerrainMaterials::textureReady(LLPointer<LLViewerFetchedTexture>& tex, bool boost)
+bool LLTerrainMaterials::makeTextureReady(LLPointer<LLViewerFetchedTexture>& tex, bool boost)
 {
     llassert(tex);
     if (!tex) { return false; }
@@ -308,15 +356,13 @@ bool LLTerrainMaterials::textureReady(LLPointer<LLViewerFetchedTexture>& tex, bo
     return true;
 }
 
-// Boost the loading priority of every known texture in the material
-// Return true when ready to use
+// Make sure to call material_asset_ready first
+// strict = true -> all materials must be sufficiently loaded
+// strict = false -> at least one material must be loaded
 // static
-bool LLTerrainMaterials::materialReady(LLPointer<LLFetchedGLTFMaterial> &mat, bool &textures_set, bool boost, bool strict)
+bool LLTerrainMaterials::materialTexturesReady(LLPointer<LLFetchedGLTFMaterial>& mat, bool& textures_set, bool boost, bool strict)
 {
-    if (!mat || !mat->isLoaded())
-    {
-        return false;
-    }
+    llassert(mat);
 
     // Material is loaded, but textures may not be
     if (!textures_set)
@@ -331,17 +377,17 @@ bool LLTerrainMaterials::materialReady(LLPointer<LLFetchedGLTFMaterial> &mat, bo
         mat->mEmissiveTexture          = fetch_terrain_texture(mat->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_EMISSIVE]);
     }
 
-    // *NOTE: Calls to textureReady may boost textures. Do not early-return.
+    // *NOTE: Calls to makeTextureReady may boost textures. Do not early-return.
     bool ready[LLGLTFMaterial::GLTF_TEXTURE_INFO_COUNT];
     ready[LLGLTFMaterial::GLTF_TEXTURE_INFO_BASE_COLOR] =
-        mat->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_BASE_COLOR].isNull() || textureReady(mat->mBaseColorTexture, boost);
+        mat->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_BASE_COLOR].isNull() || makeTextureReady(mat->mBaseColorTexture, boost);
     ready[LLGLTFMaterial::GLTF_TEXTURE_INFO_NORMAL] =
-        mat->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_NORMAL].isNull() || textureReady(mat->mNormalTexture, boost);
+        mat->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_NORMAL].isNull() || makeTextureReady(mat->mNormalTexture, boost);
     ready[LLGLTFMaterial::GLTF_TEXTURE_INFO_METALLIC_ROUGHNESS] =
         mat->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_METALLIC_ROUGHNESS].isNull() ||
-        textureReady(mat->mMetallicRoughnessTexture, boost);
+        makeTextureReady(mat->mMetallicRoughnessTexture, boost);
     ready[LLGLTFMaterial::GLTF_TEXTURE_INFO_EMISSIVE] =
-        mat->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_EMISSIVE].isNull() || textureReady(mat->mEmissiveTexture, boost);
+        mat->mTextureId[LLGLTFMaterial::GLTF_TEXTURE_INFO_EMISSIVE].isNull() || makeTextureReady(mat->mEmissiveTexture, boost);
 
     if (strict)
     {
@@ -357,6 +403,16 @@ bool LLTerrainMaterials::materialReady(LLPointer<LLFetchedGLTFMaterial> &mat, bo
     return true;
 }
 
+// Boost the loading priority of every known texture in the material
+// Return true when ready to use
+// static
+bool LLTerrainMaterials::makeMaterialReady(LLPointer<LLFetchedGLTFMaterial> &mat, bool &textures_set, bool boost, bool strict)
+{
+    if (!material_asset_ready(mat)) { return false; }
+
+    return materialTexturesReady(mat, textures_set, boost, strict);
+}
+
 // static
 const LLUUID (&LLVLComposition::getDefaultTextures())[ASSET_COUNT]
 {
@@ -403,13 +459,13 @@ void LLVLComposition::setSurface(LLSurface *surfacep)
     mSurfacep = surfacep;
 }
 
-BOOL LLVLComposition::generateHeights(const F32 x, const F32 y,
+bool LLVLComposition::generateHeights(const F32 x, const F32 y,
                                       const F32 width, const F32 height)
 {
     if (!mParamsReady)
     {
         // All the parameters haven't been set yet (we haven't gotten the message from the sim)
-        return FALSE;
+        return false;
     }
 
     llassert(mSurfacep);
@@ -417,7 +473,7 @@ BOOL LLVLComposition::generateHeights(const F32 x, const F32 y,
     if (!mSurfacep || !mSurfacep->getRegion())
     {
         // We don't always have the region yet here....
-        return FALSE;
+        return false;
     }
 
     S32 x_begin, y_begin, x_end, y_end;
@@ -499,17 +555,17 @@ BOOL LLVLComposition::generateHeights(const F32 x, const F32 y,
             *(mDatap + i + j*mWidth) = scaled_noisy_height;
         }
     }
-    return TRUE;
+    return true;
 }
 
 LLTerrainMaterials gLocalTerrainMaterials;
 
-BOOL LLVLComposition::generateComposition()
+bool LLVLComposition::generateComposition()
 {
     if (!mParamsReady)
     {
         // All the parameters haven't been set yet (we haven't gotten the message from the sim)
-        return FALSE;
+        return false;
     }
 
     return LLTerrainMaterials::generateMaterials();
@@ -586,7 +642,7 @@ namespace
         };
         PendingImage* pending_image = new PendingImage(raw_image, ddiscard, tex->getID());
 
-        loaded_callback_func cb = [](BOOL success, LLViewerFetchedTexture * src_vi, LLImageRaw * src, LLImageRaw * src_aux, S32 discard_level, BOOL is_final, void* userdata) {
+        loaded_callback_func cb = [](bool success, LLViewerFetchedTexture * src_vi, LLImageRaw * src, LLImageRaw * src_aux, S32 discard_level, bool is_final, void* userdata) {
             PendingImage* pending = (PendingImage*)userdata;
             // Owning LLVLComposition still exists
 
@@ -617,7 +673,7 @@ namespace
     }
 };
 
-BOOL LLVLComposition::generateMinimapTileLand(const F32 x, const F32 y,
+bool LLVLComposition::generateMinimapTileLand(const F32 x, const F32 y,
                                       const F32 width, const F32 height)
 {
     LL_PROFILE_ZONE_SCOPED
@@ -638,11 +694,11 @@ BOOL LLVLComposition::generateMinimapTileLand(const F32 x, const F32 y,
     const bool use_textures = getMaterialType() != LLTerrainMaterials::Type::PBR;
     if (use_textures)
     {
-        if (!texturesReady(true, true)) { return FALSE; }
+        if (!makeTexturesReady(true, true)) { return false; }
     }
     else
     {
-        if (!materialsReady(true, true)) { return FALSE; }
+        if (!makeMaterialsReady(true, true)) { return false; }
     }
 
     for (S32 i = 0; i < ASSET_COUNT; i++)
@@ -668,27 +724,28 @@ BOOL LLVLComposition::generateMinimapTileLand(const F32 x, const F32 y,
             }
             else
             {
-                tex = mDetailMaterials[i]->mBaseColorTexture;
-                tex_emissive = mDetailMaterials[i]->mEmissiveTexture;
-                base_color_factor = LLColor3(mDetailMaterials[i]->mBaseColor);
+                LLPointer<LLFetchedGLTFMaterial>& mat = mDetailRenderMaterials[i];
+                tex = mat->mBaseColorTexture;
+                tex_emissive = mat->mEmissiveTexture;
+                base_color_factor = LLColor3(mat->mBaseColor);
                 // *HACK: Treat alpha as black
-                base_color_factor *= (mDetailMaterials[i]->mBaseColor.mV[VW]);
-                emissive_factor = mDetailMaterials[i]->mEmissiveColor;
+                base_color_factor *= (mat->mBaseColor.mV[VW]);
+                emissive_factor = mat->mEmissiveColor;
                 has_base_color_factor = (base_color_factor.mV[VX] != 1.f ||
                                          base_color_factor.mV[VY] != 1.f ||
                                          base_color_factor.mV[VZ] != 1.f);
                 has_emissive_factor = (emissive_factor.mV[VX] != 1.f ||
                                        emissive_factor.mV[VY] != 1.f ||
                                        emissive_factor.mV[VZ] != 1.f);
-                has_alpha = mDetailMaterials[i]->mAlphaMode != LLGLTFMaterial::ALPHA_MODE_OPAQUE;
+                has_alpha = mat->mAlphaMode != LLGLTFMaterial::ALPHA_MODE_OPAQUE;
             }
 
             if (!tex) { tex = LLViewerFetchedTexture::sWhiteImagep; }
 
             bool delete_raw_post = false;
             bool delete_raw_post_emissive = false;
-            if (!prepare_raw_image(mRawImagesBaseColor[i], false, tex, delete_raw_post)) { return FALSE; }
-            if (tex_emissive && !prepare_raw_image(mRawImagesEmissive[i], true, tex_emissive, delete_raw_post_emissive)) { return FALSE; }
+            if (!prepare_raw_image(mRawImagesBaseColor[i], false, tex, delete_raw_post)) { return false; }
+            if (tex_emissive && !prepare_raw_image(mRawImagesEmissive[i], true, tex_emissive, delete_raw_post_emissive)) { return false; }
             // tex_emissive can be null, and then will be ignored
 
             // In the simplest case, the minimap image is just the base color.
@@ -819,7 +876,7 @@ BOOL LLVLComposition::generateMinimapTileLand(const F32 x, const F32 y,
     if (tex_comps != st_comps)
     {
         llassert(false);
-        return FALSE;
+        return false;
     }
 
     tex_x_scalef = (F32)tex_width / (F32)mWidth;
@@ -921,7 +978,7 @@ BOOL LLVLComposition::generateMinimapTileLand(const F32 x, const F32 y,
         unboost_minimap_material(mDetailMaterials[i]);
     }
 
-    return TRUE;
+    return true;
 }
 
 F32 LLVLComposition::getStartHeight(S32 corner)
diff --git a/indra/newview/llvlcomposition.h b/indra/newview/llvlcomposition.h
index e0b08a3aca..61c35ade28 100644
--- a/indra/newview/llvlcomposition.h
+++ b/indra/newview/llvlcomposition.h
@@ -35,9 +35,16 @@
 class LLSurface;
 
 class LLViewerFetchedTexture;
+class LLGLTFMaterial;
 class LLFetchedGLTFMaterial;
 
-class LLTerrainMaterials
+class LLModifyRegion
+{
+public:
+    virtual const LLGLTFMaterial* getMaterialOverride(S32 asset) const = 0;
+};
+
+class LLTerrainMaterials : public LLModifyRegion
 {
 public:
     friend class LLDrawPoolTerrain;
@@ -45,6 +52,8 @@ public:
     LLTerrainMaterials();
     virtual ~LLTerrainMaterials();
 
+    void apply(const LLModifyRegion& other);
+
     // Heights map into textures (or materials) as 0-1 = first, 1-2 = second, etc.
     // So we need to compress heights into this range.
     static const S32 ASSET_COUNT = 4;
@@ -56,26 +65,33 @@ public:
         COUNT
     };
 
-    BOOL generateMaterials();
+    bool generateMaterials();
 
     void boost();
 
     virtual LLUUID getDetailAssetID(S32 asset);
     virtual void setDetailAssetID(S32 asset, const LLUUID& id);
+    const LLGLTFMaterial* getMaterialOverride(S32 asset) const override;
+    virtual void setMaterialOverride(S32 asset, LLGLTFMaterial* mat_override);
     Type getMaterialType();
-    bool texturesReady(bool boost, bool strict);
+    bool makeTexturesReady(bool boost, bool strict);
     // strict = true -> all materials must be sufficiently loaded
     // strict = false -> at least one material must be loaded
-    bool materialsReady(bool boost, bool strict);
+    bool makeMaterialsReady(bool boost, bool strict);
 
 protected:
     void unboost();
-    static bool textureReady(LLPointer<LLViewerFetchedTexture>& tex, bool boost);
+    static bool makeTextureReady(LLPointer<LLViewerFetchedTexture>& tex, bool boost);
     // strict = true -> all materials must be sufficiently loaded
     // strict = false -> at least one material must be loaded
-    static bool materialReady(LLPointer<LLFetchedGLTFMaterial>& mat, bool& textures_set, bool boost, bool strict);
+    static bool makeMaterialReady(LLPointer<LLFetchedGLTFMaterial>& mat, bool& textures_set, bool boost, bool strict);
+    // *NOTE: Prefer calling makeMaterialReady if mat is known to be LLFetchedGLTFMaterial
+    static bool materialTexturesReady(LLPointer<LLFetchedGLTFMaterial>& mat, bool& textures_set, bool boost, bool strict);
+
     LLPointer<LLViewerFetchedTexture> mDetailTextures[ASSET_COUNT];
     LLPointer<LLFetchedGLTFMaterial> mDetailMaterials[ASSET_COUNT];
+    LLPointer<LLGLTFMaterial> mDetailMaterialOverrides[ASSET_COUNT];
+    LLPointer<LLFetchedGLTFMaterial> mDetailRenderMaterials[ASSET_COUNT];
     bool mMaterialTexturesSet[ASSET_COUNT];
 };
 
@@ -96,10 +112,10 @@ public:
     void setSurface(LLSurface *surfacep);
 
     // Viewer side hack to generate composition values
-    BOOL generateHeights(const F32 x, const F32 y, const F32 width, const F32 height);
-    BOOL generateComposition();
+    bool generateHeights(const F32 x, const F32 y, const F32 width, const F32 height);
+    bool generateComposition();
     // Generate texture from composition values.
-    BOOL generateMinimapTileLand(const F32 x, const F32 y, const F32 width, const F32 height);
+    bool generateMinimapTileLand(const F32 x, const F32 y, const F32 width, const F32 height);
 
     // Use these as indeces ito the get/setters below that use 'corner'
     enum ECorner
@@ -120,14 +136,11 @@ public:
 
     friend class LLVOSurfacePatch;
     friend class LLDrawPoolTerrain;
-    void setParamsReady()       { mParamsReady = TRUE; }
-    BOOL getParamsReady() const { return mParamsReady; }
+    void setParamsReady()       { mParamsReady = true; }
+    bool getParamsReady() const { return mParamsReady; }
 
 protected:
-    static bool textureReady(LLPointer<LLViewerFetchedTexture>& tex, bool boost = false);
-    static bool materialReady(LLPointer<LLFetchedGLTFMaterial>& mat, bool& textures_set, bool boost = false);
-
-    BOOL mParamsReady = FALSE;
+    bool mParamsReady = false;
     LLSurface *mSurfacep;
 
     // Final minimap raw images
diff --git a/indra/newview/llvlmanager.cpp b/indra/newview/llvlmanager.cpp
index 901516f832..c2bcd32921 100644
--- a/indra/newview/llvlmanager.cpp
+++ b/indra/newview/llvlmanager.cpp
@@ -89,7 +89,7 @@ void LLVLManager::unpackData(const S32 num_packets)
         decode_patch_group_header(bit_pack, &goph);
         if (LAND_LAYER_CODE == datap->mType)
         {
-            datap->mRegionp->getLand().decompressDCTPatch(bit_pack, &goph, FALSE);
+            datap->mRegionp->getLand().decompressDCTPatch(bit_pack, &goph, false);
         }
         else if (WIND_LAYER_CODE == datap->mType)
         {
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index 258ab80ea4..65fcded257 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -133,7 +133,8 @@ const F32 DEFAULT_MAX_ATTACHMENT_COMPLEXITY = 1.0e6f;
 // expected attachments so viewer has to wait to see if anything
 // else will arrive
 const F32 FIRST_APPEARANCE_CLOUD_MIN_DELAY = 3.f; // seconds
-const F32 FIRST_APPEARANCE_CLOUD_MAX_DELAY = 45.f;
+const F32 FIRST_APPEARANCE_CLOUD_MAX_DELAY = 15.f;
+const F32 FIRST_APPEARANCE_CLOUD_IMPOSTOR_MODIFIER = 1.25f;
 
 using namespace LLAvatarAppearanceDefines;
 
@@ -206,6 +207,7 @@ const U32 LLVOAvatar::VISUAL_COMPLEXITY_UNKNOWN = 0;
 const F64 HUD_OVERSIZED_TEXTURE_DATA_SIZE = 1024 * 1024;
 
 const F32 MAX_TEXTURE_WAIT_TIME_SEC = 60;
+const F32 MAX_ATTACHMENT_WAIT_TIME_SEC = 60;
 
 const S32 MIN_NONTUNED_AVS = 5;
 
@@ -292,7 +294,7 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() { return TRUE; }
+    virtual bool getLoop() { return true; }
 
     // motions must report their total duration
     virtual F32 getDuration() { return 0.0; }
@@ -328,14 +330,14 @@ public:
     }
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate() { return TRUE; }
+    virtual bool onActivate() { return true; }
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask)
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask)
     {
         LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
         F32 nx[2];
@@ -353,7 +355,7 @@ public:
         tQn.setQuat( rx, ry, 0.0f );
         mTorsoState->setRotation( tQn );
 
-        return TRUE;
+        return true;
     }
 
     // called when a motion is deactivated
@@ -400,7 +402,7 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() { return TRUE; }
+    virtual bool getLoop() { return true; }
 
     // motions must report their total duration
     virtual F32 getDuration() { return 0.0; }
@@ -425,7 +427,7 @@ public:
     virtual LLMotionInitStatus onInitialize(LLCharacter *character)
     {
         mCharacter = character;
-        BOOL success = true;
+        bool success = true;
 
         if ( !mChestState->setJoint( character->getJoint( "mChest" ) ) )
         {
@@ -449,14 +451,14 @@ public:
     }
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate() { return TRUE; }
+    virtual bool onActivate() { return true; }
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask)
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask)
     {
         LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
         mBreatheRate = 1.f;
@@ -465,7 +467,7 @@ public:
 
         mChestState->setRotation(LLQuaternion(breathe_amt, LLVector3(0.f, 1.f, 0.f)));
 
-        return TRUE;
+        return true;
     }
 
     // called when a motion is deactivated
@@ -513,7 +515,7 @@ public:
     //-------------------------------------------------------------------------
 
     // motions must specify whether or not they loop
-    virtual BOOL getLoop() { return TRUE; }
+    virtual bool getLoop() { return true; }
 
     // motions must report their total duration
     virtual F32 getDuration() { return 0.0; }
@@ -551,19 +553,19 @@ public:
     }
 
     // called when a motion is activated
-    // must return TRUE to indicate success, or else
+    // must return true to indicate success, or else
     // it will be deactivated
-    virtual BOOL onActivate() { return TRUE; }
+    virtual bool onActivate() { return true; }
 
     // called per time step
-    // must return TRUE while it is active, and
-    // must return FALSE when the motion is completed.
-    virtual BOOL onUpdate(F32 time, U8* joint_mask)
+    // must return true while it is active, and
+    // must return false when the motion is completed.
+    virtual bool onUpdate(F32 time, U8* joint_mask)
     {
         LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
         mPelvisState->setPosition(LLVector3::zero);
 
-        return TRUE;
+        return true;
     }
 
     // called when a motion is deactivated
@@ -606,16 +608,16 @@ const LLUUID LLVOAvatar::sStepSounds[LL_MCODE_END] =
 };
 
 S32 LLVOAvatar::sRenderName = RENDER_NAME_ALWAYS;
-BOOL LLVOAvatar::sRenderGroupTitles = TRUE;
+bool LLVOAvatar::sRenderGroupTitles = true;
 S32 LLVOAvatar::sNumVisibleChatBubbles = 0;
-BOOL LLVOAvatar::sDebugInvisible = FALSE;
-BOOL LLVOAvatar::sShowAttachmentPoints = FALSE;
-BOOL LLVOAvatar::sShowAnimationDebug = FALSE;
-BOOL LLVOAvatar::sVisibleInFirstPerson = FALSE;
+bool LLVOAvatar::sDebugInvisible = false;
+bool LLVOAvatar::sShowAttachmentPoints = false;
+bool LLVOAvatar::sShowAnimationDebug = false;
+bool LLVOAvatar::sVisibleInFirstPerson = false;
 F32 LLVOAvatar::sLODFactor = 1.f;
 F32 LLVOAvatar::sPhysicsLODFactor = 1.f;
-BOOL LLVOAvatar::sJointDebug            = FALSE;
-BOOL LLVOAvatar::sLipSyncEnabled        = FALSE;
+bool LLVOAvatar::sJointDebug            = false;
+bool LLVOAvatar::sLipSyncEnabled        = false;
 F32 LLVOAvatar::sUnbakedTime = 0.f;
 F32 LLVOAvatar::sUnbakedUpdateTime = 0.f;
 F32 LLVOAvatar::sGreyTime = 0.f;
@@ -642,20 +644,20 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
     mAttachmentVisibleTriangleCount(0),
     mAttachmentEstTriangleCount(0.f),
     mReportedVisualComplexity(VISUAL_COMPLEXITY_UNKNOWN),
-    mTurning(FALSE),
+    mTurning(false),
     mLastSkeletonSerialNum( 0 ),
-    mIsSitting(FALSE),
+    mIsSitting(false),
     mTimeVisible(),
-    mTyping(FALSE),
-    mMeshValid(FALSE),
-    mVisible(FALSE),
+    mTyping(false),
+    mMeshValid(false),
+    mVisible(false),
     mLastImpostorUpdateFrameTime(0.f),
     mLastImpostorUpdateReason(0),
     mWindFreq(0.f),
     mRipplePhase( 0.f ),
-    mBelowWater(FALSE),
+    mBelowWater(false),
     mLastAppearanceBlendTime(0.f),
-    mAppearanceAnimating(FALSE),
+    mAppearanceAnimating(false),
     mNameIsSet(false),
     mTitle(),
     mNameAway(false),
@@ -666,29 +668,30 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
     mNameAlpha(0.f),
     mRenderGroupTitles(sRenderGroupTitles),
     mNameCloud(false),
-    mFirstTEMessageReceived( FALSE ),
-    mFirstAppearanceMessageReceived( FALSE ),
-    mCulled( FALSE ),
+    mFirstTEMessageReceived( false ),
+    mFirstAppearanceMessageReceived( false ),
+    mCulled( false ),
     mVisibilityRank(0),
-    mNeedsSkin(FALSE),
+    mNeedsSkin(false),
     mLastSkinTime(0.f),
     mUpdatePeriod(1),
     mOverallAppearance(AOA_INVISIBLE),
     mVisualComplexityStale(true),
     mVisuallyMuteSetting(AV_RENDER_NORMALLY),
     mMutedAVColor(LLColor4::white /* used for "uninitialize" */),
-    mFirstFullyVisible(TRUE),
-    mFirstUseDelaySeconds(FIRST_APPEARANCE_CLOUD_MIN_DELAY),
-    mFullyLoaded(FALSE),
-    mPreviousFullyLoaded(FALSE),
-    mFullyLoadedInitialized(FALSE),
+    mFirstFullyVisible(true),
+    mFirstDecloudTime(-1.f),
+    mFullyLoaded(false),
+    mPreviousFullyLoaded(false),
+    mFullyLoadedInitialized(false),
+    mLastCloudAttachmentCount(0),
     mVisualComplexity(VISUAL_COMPLEXITY_UNKNOWN),
-    mLoadedCallbacksPaused(FALSE),
+    mLoadedCallbacksPaused(false),
     mLoadedCallbackTextures(0),
     mRenderUnloadedAvatar(LLCachedControl<bool>(gSavedSettings, "RenderUnloadedAvatar", false)),
     mLastRezzedStatus(-1),
-    mIsEditingAppearance(FALSE),
-    mUseLocalAppearance(FALSE),
+    mIsEditingAppearance(false),
+    mUseLocalAppearance(false),
     mLastUpdateRequestCOFVersion(-1),
     mLastUpdateReceivedCOFVersion(-1),
     mCachedMuteListUpdateTime(0),
@@ -703,14 +706,14 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
     setHoverOffset(LLVector3(0.0, 0.0, 0.0));
 
     // mVoiceVisualizer is created by the hud effects manager and uses the HUD Effects pipeline
-    const BOOL needsSendToSim = false; // currently, this HUD effect doesn't need to pack and unpack data to do its job
+    const bool needsSendToSim = false; // currently, this HUD effect doesn't need to pack and unpack data to do its job
     mVoiceVisualizer = ( LLVoiceVisualizer *)LLHUDManager::getInstance()->createViewerEffect( LLHUDObject::LL_HUD_EFFECT_VOICE_VISUALIZER, needsSendToSim );
 
     LL_DEBUGS("Avatar","Message") << "LLVOAvatar Constructor (0x" << this << ") id:" << mID << LL_ENDL;
     mPelvisp = NULL;
 
     mDirtyMesh = 2; // Dirty geometry, need to regenerate.
-    mMeshTexturesDirty = FALSE;
+    mMeshTexturesDirty = false;
     mHeadp = NULL;
 
 
@@ -718,9 +721,9 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
     mSpeed = 0.f;
     setAnimationData("Speed", &mSpeed);
 
-    mNeedsImpostorUpdate = TRUE;
+    mNeedsImpostorUpdate = true;
     mLastImpostorUpdateReason = 0;
-    mNeedsAnimUpdate = TRUE;
+    mNeedsAnimUpdate = true;
 
     mNeedsExtentUpdate = true;
 
@@ -729,22 +732,22 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
 
     setNumTEs(TEX_NUM_INDICES);
 
-    mbCanSelect = TRUE;
+    mbCanSelect = true;
 
     mSignaledAnimations.clear();
     mPlayingAnimations.clear();
 
-    mWasOnGroundLeft = FALSE;
-    mWasOnGroundRight = FALSE;
+    mWasOnGroundLeft = false;
+    mWasOnGroundRight = false;
 
     mTimeLast = 0.0f;
     mSpeedAccum = 0.0f;
 
     mRippleTimeLast = 0.f;
 
-    mInAir = FALSE;
+    mInAir = false;
 
-    mStepOnLand = TRUE;
+    mStepOnLand = true;
     mStepMaterial = 0;
 
     mLipSyncActive = false;
@@ -771,7 +774,7 @@ std::string LLVOAvatar::avString() const
 {
     if (isControlAvatar())
     {
-        return getFullname();
+        return " " + getFullname() + " ";
     }
     else
     {
@@ -836,7 +839,7 @@ LLVOAvatar::~LLVOAvatar()
     std::for_each(mAttachmentPoints.begin(), mAttachmentPoints.end(), DeletePairedPointer());
     mAttachmentPoints.clear();
 
-    mDead = TRUE;
+    mDead = true;
 
     mAnimationSources.clear();
     LLLoadedCallbackEntry::cleanUpCallbackList(&mCallbackTextureList) ;
@@ -860,10 +863,10 @@ void LLVOAvatar::markDead()
 }
 
 
-BOOL LLVOAvatar::isFullyBaked()
+bool LLVOAvatar::isFullyBaked()
 {
-    if (mIsDummy) return TRUE;
-    if (getNumTEs() == 0) return FALSE;
+    if (mIsDummy) return true;
+    if (getNumTEs() == 0) return false;
 
     for (U32 i = 0; i < mBakedTextureDatas.size(); i++)
     {
@@ -871,13 +874,13 @@ BOOL LLVOAvatar::isFullyBaked()
             && ((i != BAKED_SKIRT) || isWearingWearableType(LLWearableType::WT_SKIRT))
             && (i != BAKED_LEFT_ARM) && (i != BAKED_LEFT_LEG) && (i != BAKED_AUX1) && (i != BAKED_AUX2) && (i != BAKED_AUX3))
         {
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLVOAvatar::isFullyTextured() const
+bool LLVOAvatar::isFullyTextured() const
 {
     for (S32 i = 0; i < mMeshLOD.size(); i++)
     {
@@ -907,13 +910,13 @@ BOOL LLVOAvatar::isFullyTextured() const
                 continue; // Mesh exists and has a composite texture.
             }
             // Fail
-            return FALSE;
+            return false;
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLVOAvatar::hasGray() const
+bool LLVOAvatar::hasGray() const
 {
     return !getIsCloud() && !isFullyTextured();
 }
@@ -922,7 +925,9 @@ S32 LLVOAvatar::getRezzedStatus() const
 {
     if (getIsCloud()) return 0;
     bool textured = isFullyTextured();
-    if (textured && allBakedTexturesCompletelyDownloaded()) return 3;
+    bool all_baked_loaded = allBakedTexturesCompletelyDownloaded();
+    if (textured && all_baked_loaded && getAttachmentCount() == mSimAttachments.size()) return 4;
+    if (textured && all_baked_loaded) return 3;
     if (textured) return 2;
     llassert(hasGray());
     return 1; // gray
@@ -950,9 +955,9 @@ void LLVOAvatar::deleteLayerSetCaches(bool clearAll)
 }
 
 // static
-BOOL LLVOAvatar::areAllNearbyInstancesBaked(S32& grey_avatars)
+bool LLVOAvatar::areAllNearbyInstancesBaked(S32& grey_avatars)
 {
-    BOOL res = TRUE;
+    bool res = true;
     grey_avatars = 0;
     for (std::vector<LLCharacter*>::iterator iter = LLCharacter::sInstances.begin();
          iter != LLCharacter::sInstances.end(); ++iter)
@@ -964,7 +969,7 @@ BOOL LLVOAvatar::areAllNearbyInstancesBaked(S32& grey_avatars)
         }
         else if( !inst->isFullyBaked() )
         {
-            res = FALSE;
+            res = false;
             if (inst->mHasGrey)
             {
                 ++grey_avatars;
@@ -975,10 +980,13 @@ BOOL LLVOAvatar::areAllNearbyInstancesBaked(S32& grey_avatars)
 }
 
 // static
-void LLVOAvatar::getNearbyRezzedStats(std::vector<S32>& counts)
+void LLVOAvatar::getNearbyRezzedStats(std::vector<S32>& counts, F32& avg_cloud_time, S32& cloud_avatars)
 {
     counts.clear();
-    counts.resize(4);
+    counts.resize(5);
+    avg_cloud_time = 0;
+    cloud_avatars = 0;
+    S32 count_avg = 0;
     for (std::vector<LLCharacter*>::iterator iter = LLCharacter::sInstances.begin();
          iter != LLCharacter::sInstances.end(); ++iter)
     {
@@ -987,8 +995,23 @@ void LLVOAvatar::getNearbyRezzedStats(std::vector<S32>& counts)
         {
             S32 rez_status = inst->getRezzedStatus();
             counts[rez_status]++;
+            F32 time = inst->getFirstDecloudTime();
+            if (time >= 0)
+            {
+                avg_cloud_time+=time;
+                count_avg++;
+            }
+            if (!inst->isFullyLoaded() || time < 0)
+            {
+                // still renders as cloud
+                cloud_avatars++;
+            }
         }
     }
+    if (count_avg > 0)
+    {
+        avg_cloud_time /= count_avg;
+    }
 }
 
 // static
@@ -996,8 +1019,9 @@ std::string LLVOAvatar::rezStatusToString(S32 rez_status)
 {
     if (rez_status==0) return "cloud";
     if (rez_status==1) return "gray";
-    if (rez_status==2) return "downloading";
-    if (rez_status==3) return "full";
+    if (rez_status==2) return "downloading baked";
+    if (rez_status==3) return "loading attachments";
+    if (rez_status==4) return "full";
     return "unknown";
 }
 
@@ -1085,7 +1109,7 @@ void LLVOAvatar::restoreGL()
 {
     if (!isAgentAvatarValid()) return;
 
-    gAgentAvatarp->setCompositeUpdatesEnabled(TRUE);
+    gAgentAvatarp->setCompositeUpdatesEnabled(true);
     for (U32 i = 0; i < gAgentAvatarp->mBakedTextureDatas.size(); i++)
     {
         gAgentAvatarp->invalidateComposite(gAgentAvatarp->getTexLayerSet(i));
@@ -1109,7 +1133,7 @@ void LLVOAvatar::resetImpostors()
     {
         LLVOAvatar* avatar = (LLVOAvatar*) *iter;
         avatar->mImpostor.release();
-        avatar->mNeedsImpostorUpdate = TRUE;
+        avatar->mNeedsImpostorUpdate = true;
         avatar->mLastImpostorUpdateReason = 1;
     }
 }
@@ -1125,7 +1149,7 @@ void LLVOAvatar::deleteCachedImages(bool clearAll)
             LLVOAvatar* inst = (LLVOAvatar*) *iter;
             inst->deleteLayerSetCaches(clearAll);
         }
-        LLViewerTexLayerSet::sHasCaches = FALSE;
+        LLViewerTexLayerSet::sHasCaches = false;
     }
     LLVOAvatarSelf::deleteScratchTextures();
     LLTexLayerStaticImageList::getInstance()->deleteCachedImages();
@@ -1297,7 +1321,7 @@ const LLVector3 LLVOAvatar::getRenderPosition() const
     }
 }
 
-void LLVOAvatar::updateDrawable(BOOL force_damped)
+void LLVOAvatar::updateDrawable(bool force_damped)
 {
     clearChanged(SHIFTED);
 }
@@ -1628,7 +1652,7 @@ void LLVOAvatar::renderCollisionVolumes()
     {
         LLVector4a unused;
 
-        mNameText->lineSegmentIntersect(unused, unused, unused, TRUE);
+        mNameText->lineSegmentIntersect(unused, unused, unused, true);
     }
 }
 
@@ -1798,11 +1822,11 @@ void LLVOAvatar::renderJoints()
     addDebugText(nullstr.str());
 }
 
-BOOL LLVOAvatar::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
+bool LLVOAvatar::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
                                       S32 face,
-                                      BOOL pick_transparent,
-                                      BOOL pick_rigged,
-                                      BOOL pick_unselectable,
+                                      bool pick_transparent,
+                                      bool pick_rigged,
+                                      bool pick_unselectable,
                                       S32* face_hit,
                                       LLVector4a* intersection,
                                       LLVector2* tex_coord,
@@ -1811,12 +1835,12 @@ BOOL LLVOAvatar::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
 {
     if ((isSelf() && !gAgent.needsRenderAvatar()) || !LLPipeline::sPickAvatar)
     {
-        return FALSE;
+        return false;
     }
 
     if (isControlAvatar())
     {
-        return FALSE;
+        return false;
     }
 
     if (lineSegmentBoundingBox(start, end))
@@ -1857,7 +1881,7 @@ BOOL LLVOAvatar::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
                     normal->load3(res_norm.v);
                 }
 
-                return TRUE;
+                return true;
             }
         }
 
@@ -1898,18 +1922,18 @@ BOOL LLVOAvatar::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
             *intersection = position;
         }
 
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 // virtual
 LLViewerObject* LLVOAvatar::lineSegmentIntersectRiggedAttachments(const LLVector4a& start, const LLVector4a& end,
                                       S32 face,
-                                      BOOL pick_transparent,
-                                      BOOL pick_rigged,
-                                      BOOL pick_unselectable,
+                                      bool pick_transparent,
+                                      bool pick_rigged,
+                                      bool pick_unselectable,
                                       S32* face_hit,
                                       LLVector4a* intersection,
                                       LLVector2* tex_coord,
@@ -1995,7 +2019,7 @@ void LLVOAvatar::buildCharacter()
     LLAvatarAppearance::buildCharacter();
 
     // Not done building yet; more to do.
-    mIsBuilt = FALSE;
+    mIsBuilt = false;
 
     //-------------------------------------------------------------------------
     // set head offset from pelvis
@@ -2033,10 +2057,10 @@ void LLVOAvatar::buildCharacter()
     //-------------------------------------------------------------------------
     processAnimationStateChanges();
 
-    mIsBuilt = TRUE;
+    mIsBuilt = true;
     stop_glerror();
 
-    mMeshValid = TRUE;
+    mMeshValid = true;
 }
 
 //-----------------------------------------------------------------------------
@@ -2120,7 +2144,7 @@ void LLVOAvatar::resetSkeleton(bool reset_animations)
     LL_DEBUGS("Avatar") << avString() << " reset starts" << LL_ENDL;
     if (!isControlAvatar() && !mLastProcessedAppearance)
     {
-        LL_WARNS() << "Can't reset avatar; no appearance message has been received yet." << LL_ENDL;
+        LL_WARNS() << "Can't reset avatar " << getID() << "; no appearance message has been received yet." << LL_ENDL;
         return;
     }
 
@@ -2187,10 +2211,10 @@ void LLVOAvatar::resetSkeleton(bool reset_animations)
         // Stripped down approximation of
         // applyParsedAppearanceMessage, but with alternative default
         // (jellydoll) params
-        setCompositeUpdatesEnabled( FALSE );
+        setCompositeUpdatesEnabled( false );
         gPipeline.markGLRebuild(this);
         applyDefaultParams();
-        setCompositeUpdatesEnabled( TRUE );
+        setCompositeUpdatesEnabled( true );
         updateMeshTextures();
         updateMeshVisibility();
     }
@@ -2235,7 +2259,7 @@ void LLVOAvatar::releaseMeshData()
          ++iter)
     {
         LLAvatarJoint* joint = (*iter);
-        joint->setValid(FALSE, TRUE);
+        joint->setValid(false, true);
     }
 
     //cleanup data
@@ -2263,10 +2287,10 @@ void LLVOAvatar::releaseMeshData()
         LLViewerJointAttachment* attachment = iter->second;
         if (!attachment->getIsHUDAttachment())
         {
-            attachment->setAttachmentVisibility(FALSE);
+            attachment->setAttachmentVisibility(false);
         }
     }
-    mMeshValid = FALSE;
+    mMeshValid = false;
 }
 
 //-----------------------------------------------------------------------------
@@ -2282,7 +2306,7 @@ void LLVOAvatar::restoreMeshData()
     }
 
     //LL_INFOS() << "Restoring" << LL_ENDL;
-    mMeshValid = TRUE;
+    mMeshValid = true;
     updateJointLODs();
 
     for (attachment_map_t::iterator iter = mAttachmentPoints.begin();
@@ -2292,7 +2316,7 @@ void LLVOAvatar::restoreMeshData()
         LLViewerJointAttachment* attachment = iter->second;
         if (!attachment->getIsHUDAttachment())
         {
-            attachment->setAttachmentVisibility(TRUE);
+            attachment->setAttachmentVisibility(true);
         }
     }
 
@@ -2311,7 +2335,7 @@ void LLVOAvatar::updateMeshData()
 
         S32 f_num = 0 ;
         const U32 VERTEX_NUMBER_THRESHOLD = 128 ;//small number of this means each part of an avatar has its own vertex buffer.
-        const S32 num_parts = mMeshLOD.size();
+        const auto num_parts = mMeshLOD.size();
 
         // this order is determined by number of LODS
         // if a mesh earlier in this list changed LODs while a later mesh doesn't,
@@ -2460,19 +2484,20 @@ U32 LLVOAvatar::processUpdateMessage(LLMessageSystem *mesgsys,
                                      U32 block_num, const EObjectUpdateType update_type,
                                      LLDataPacker *dp)
 {
-    const BOOL has_name = !getNVPair("FirstName");
+    const bool had_no_name = !getNVPair("FirstName");
 
     // Do base class updates...
     U32 retval = LLViewerObject::processUpdateMessage(mesgsys, user_data, block_num, update_type, dp);
 
     // Print out arrival information once we have name of avatar.
-    if (has_name && getNVPair("FirstName"))
+    const bool has_name = getNVPair("FirstName");
+    if (had_no_name && has_name)
     {
         mDebugExistenceTimer.reset();
-        debugAvatarRezTime("AvatarRezArrivedNotification","avatar arrived");
+        debugAvatarRezTime("AvatarRezArrivedNotification", "avatar arrived");
     }
 
-    if(retval & LLViewerObject::INVALID_UPDATE)
+    if (retval & LLViewerObject::INVALID_UPDATE)
     {
         if (isSelf())
         {
@@ -2506,7 +2531,7 @@ LLViewerFetchedTexture *LLVOAvatar::getBakedTextureImage(const U8 te, const LLUU
         }
         LL_DEBUGS("Avatar") << avString() << "get server-bake image from URL " << url << LL_ENDL;
         result = LLViewerTextureManager::getFetchedTextureFromUrl(
-            url, FTT_SERVER_BAKE, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, uuid);
+            url, FTT_SERVER_BAKE, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE, 0, 0, uuid);
         if (result->isMissingAsset())
         {
             result->setIsMissingAsset(false);
@@ -2569,6 +2594,27 @@ void LLVOAvatar::idleUpdate(LLAgent &agent, const F64 &time)
         LL_INFOS() << "Warning!  Idle on dead avatar" << LL_ENDL;
         return;
     }
+
+    static LLCachedControl<bool> friends_only(gSavedSettings, "RenderAvatarFriendsOnly", false);
+    if (friends_only()
+        && !isUIAvatar()
+        && !isControlAvatar()
+        && !isSelf()
+        && !isBuddy())
+    {
+        if (mNameText)
+        {
+            mNameIsSet = false;
+            mNameText->markDead();
+            mNameText = NULL;
+            sNumVisibleChatBubbles--;
+        }
+        deleteParticleSource();
+        mVoiceVisualizer->setVoiceEnabled(false);
+
+        return;
+    }
+
     // record time and refresh "tooSlow" status
     updateTooSlow();
 
@@ -2656,7 +2702,7 @@ void LLVOAvatar::idleUpdate(LLAgent &agent, const F64 &time)
     // animate the character
     // store off last frame's root position to be consistent with camera position
     mLastRootPos = mRoot->getWorldPosition();
-    BOOL detailed_update = updateCharacter(agent);
+    bool detailed_update = updateCharacter(agent);
 
     static LLUICachedControl<bool> visualizers_in_calls("ShowVoiceVisualizersInCalls", false);
     bool voice_enabled = (visualizers_in_calls || LLVoiceClient::getInstance()->inProximalChannel()) &&
@@ -2827,7 +2873,7 @@ void LLVOAvatar::idleUpdateMisc(bool detailed_update)
     LLJoint::sNumUpdates = 0;
     LLJoint::sNumTouches = 0;
 
-    BOOL visible = isVisible() || mNeedsAnimUpdate;
+    bool visible = isVisible() || mNeedsAnimUpdate;
 
     // update attachments positions
     if (detailed_update)
@@ -2916,7 +2962,7 @@ void LLVOAvatar::idleUpdateMisc(bool detailed_update)
         }
     }
 
-    mNeedsAnimUpdate = FALSE;
+    mNeedsAnimUpdate = false;
 
     if (isImpostor() && !mNeedsImpostorUpdate)
     {
@@ -2934,7 +2980,7 @@ void LLVOAvatar::idleUpdateMisc(bool detailed_update)
 
             if (angle_diff > F_PI/512.f*distance*mUpdatePeriod)
             {
-                mNeedsImpostorUpdate = TRUE;
+                mNeedsImpostorUpdate = true;
                 mLastImpostorUpdateReason = 2;
             }
         }
@@ -2946,7 +2992,7 @@ void LLVOAvatar::idleUpdateMisc(bool detailed_update)
             F32 dist_diff = fabsf(distance-mImpostorDistance);
             if (dist_diff/mImpostorDistance > 0.1f)
             {
-                mNeedsImpostorUpdate = TRUE;
+                mNeedsImpostorUpdate = true;
                 mLastImpostorUpdateReason = 3;
             }
             else
@@ -2959,7 +3005,7 @@ void LLVOAvatar::idleUpdateMisc(bool detailed_update)
                 diff.setSub(ext[1], mImpostorExtents[1]);
                 if (diff.getLength3().getF32() > 0.05f)
                 {
-                    mNeedsImpostorUpdate = TRUE;
+                    mNeedsImpostorUpdate = true;
                     mLastImpostorUpdateReason = 4;
                 }
                 else
@@ -2967,7 +3013,7 @@ void LLVOAvatar::idleUpdateMisc(bool detailed_update)
                     diff.setSub(ext[0], mImpostorExtents[0]);
                     if (diff.getLength3().getF32() > 0.05f)
                     {
-                        mNeedsImpostorUpdate = TRUE;
+                        mNeedsImpostorUpdate = true;
                         mLastImpostorUpdateReason = 5;
                     }
                 }
@@ -2982,7 +3028,7 @@ void LLVOAvatar::idleUpdateMisc(bool detailed_update)
         //force a move if sitting on an active object
         if (getParent() && ((LLViewerObject*) getParent())->mDrawable->isActive())
         {
-            gPipeline.markMoved(mDrawable, TRUE);
+            gPipeline.markMoved(mDrawable, true);
         }
     }
 }
@@ -2996,7 +3042,7 @@ void LLVOAvatar::idleUpdateAppearanceAnimation()
         F32 appearance_anim_time = mAppearanceMorphTimer.getElapsedTimeF32();
         if (appearance_anim_time >= APPEARANCE_MORPH_TIME)
         {
-            mAppearanceAnimating = FALSE;
+            mAppearanceAnimating = false;
             for (LLVisualParam *param = getFirstVisualParam();
                  param;
                  param = getNextVisualParam())
@@ -3104,15 +3150,16 @@ void LLVOAvatar::idleUpdateLoadingEffect()
         {
             if (mFirstFullyVisible)
             {
-                mFirstFullyVisible = FALSE;
+                mFirstFullyVisible = false;
+                mFirstDecloudTime = mFirstAppearanceMessageTimer.getElapsedTimeF32();
                 if (isSelf())
                 {
-                    LL_INFOS("Avatar") << avString() << "self isFullyLoaded, mFirstFullyVisible" << LL_ENDL;
+                    LL_INFOS("Avatar") << avString() << "self isFullyLoaded, mFirstFullyVisible after " << mFirstDecloudTime << LL_ENDL;
                     LLAppearanceMgr::instance().onFirstFullyVisible();
                 }
                 else
                 {
-                    LL_INFOS("Avatar") << avString() << "other isFullyLoaded, mFirstFullyVisible" << LL_ENDL;
+                    LL_INFOS("Avatar") << avString() << "other isFullyLoaded, mFirstFullyVisible after " << mFirstDecloudTime << LL_ENDL;
                 }
             }
 
@@ -3260,17 +3307,17 @@ void LLVOAvatar::idleUpdateNameTag(const LLVector3& root_pos_last)
         return;
     }
 
-    bool new_name = FALSE;
+    bool new_name = false;
     if (visible_chat != mVisibleChat)
     {
         mVisibleChat = visible_chat;
-        new_name = TRUE;
+        new_name = true;
     }
 
     if (sRenderGroupTitles != mRenderGroupTitles)
     {
         mRenderGroupTitles = sRenderGroupTitles;
-        new_name = TRUE;
+        new_name = true;
     }
 
     // First Calculate Alpha
@@ -3313,11 +3360,11 @@ void LLVOAvatar::idleUpdateNameTag(const LLVector3& root_pos_last)
         //mNameText->setMass(10.f);
         mNameText->setSourceObject(this);
         mNameText->setVertAlignment(LLHUDNameTag::ALIGN_VERT_TOP);
-        mNameText->setVisibleOffScreen(TRUE);
+        mNameText->setVisibleOffScreen(true);
         mNameText->setMaxLines(11);
         mNameText->setFadeDistance(CHAT_NORMAL_RADIUS, 5.f);
         sNumVisibleChatBubbles++;
-        new_name = TRUE;
+        new_name = true;
     }
 
     mNameText->setPositionAgent(root_pos_last);
@@ -3423,6 +3470,7 @@ void LLVOAvatar::idleUpdateNameTagText(bool new_name)
 
         static LLUICachedControl<bool> show_display_names("NameTagShowDisplayNames", true);
         static LLUICachedControl<bool> show_usernames("NameTagShowUsernames", true);
+        static LLUICachedControl<bool> show_rez_status("NameTagDebugAVRezState", false);
 
         if (LLAvatarName::useDisplayNames())
         {
@@ -3456,6 +3504,12 @@ void LLVOAvatar::idleUpdateNameTagText(bool new_name)
             addNameTagLine(full_name, name_tag_color, LLFontGL::NORMAL, font, true);
         }
 
+        if (show_rez_status)
+        {
+            std::string av_string = LLVOAvatar::rezStatusToString(mLastRezzedStatus);
+            addNameTagLine(av_string, name_tag_color, LLFontGL::NORMAL, LLFontGL::getFontSansSerifSmall(), true);
+        }
+
         mNameAway = is_away;
         mNameDoNotDisturb = is_do_not_disturb;
         mNameMute = is_muted;
@@ -3464,7 +3518,7 @@ void LLVOAvatar::idleUpdateNameTagText(bool new_name)
         mNameCloud = is_cloud;
         mTitle = title ? title->getString() : "";
         LLStringFn::replace_ascii_controlchars(mTitle,LL_UNKNOWN_CHAR);
-        new_name = TRUE;
+        new_name = true;
     }
 
     if (mVisibleChat)
@@ -3516,7 +3570,7 @@ void LLVOAvatar::idleUpdateNameTagText(bool new_name)
                 mNameText->addLine(chat_iter->mText, old_chat, style);
             }
         }
-        mNameText->setVisibleOffScreen(TRUE);
+        mNameText->setVisibleOffScreen(true);
 
         if (mTyping)
         {
@@ -3541,7 +3595,7 @@ void LLVOAvatar::idleUpdateNameTagText(bool new_name)
         // ...not using chat bubbles, just names
         mNameText->setTextAlignment(LLHUDNameTag::ALIGN_TEXT_CENTER);
         mNameText->setFadeDistance(CHAT_NORMAL_RADIUS, 5.f);
-        mNameText->setVisibleOffScreen(FALSE);
+        mNameText->setVisibleOffScreen(false);
     }
 }
 
@@ -4092,24 +4146,24 @@ void LLVOAvatar::updateFootstepSounds()
 
     if ( gAudiop && isAnyAnimationSignaled(AGENT_FOOTSTEP_ANIMS, NUM_AGENT_FOOTSTEP_ANIMS) )
     {
-        BOOL playSound = FALSE;
+        bool playSound = false;
         LLVector3 foot_pos_agent;
 
-        BOOL onGroundLeft = (leftElev <= 0.05f);
-        BOOL onGroundRight = (rightElev <= 0.05f);
+        bool onGroundLeft = (leftElev <= 0.05f);
+        bool onGroundRight = (rightElev <= 0.05f);
 
         // did left foot hit the ground?
         if ( onGroundLeft && !mWasOnGroundLeft )
         {
             foot_pos_agent = ankle_left_pos_agent;
-            playSound = TRUE;
+            playSound = true;
         }
 
         // did right foot hit the ground?
         if ( onGroundRight && !mWasOnGroundRight )
     {
             foot_pos_agent = ankle_right_pos_agent;
-            playSound = TRUE;
+            playSound = true;
     }
 
         mWasOnGroundLeft = onGroundLeft;
@@ -4266,7 +4320,7 @@ void LLVOAvatar::updateOrientation(LLAgent& agent, F32 speed, F32 delta_time)
             // When moving very slow, the pelvis is allowed to deviate from the
     // forward direction to allow it to hold its position while the torso
             // and head turn.  Once in motion, it must conform however.
-            BOOL self_in_mouselook = isSelf() && gAgentCamera.cameraMouselook();
+            bool self_in_mouselook = isSelf() && gAgentCamera.cameraMouselook();
 
             LLVector3 pelvisDir( mRoot->getWorldMatrix().getFwdRow4().mV );
 
@@ -4292,7 +4346,7 @@ void LLVOAvatar::updateOrientation(LLAgent& agent, F32 speed, F32 delta_time)
                 // smaller correction vector means pelvis follows prim direction more closely
                 if (!mTurning && angle > pelvis_rot_threshold*0.75f)
                 {
-                    mTurning = TRUE;
+                    mTurning = true;
                 }
 
                 // use tighter threshold when turning
@@ -4313,7 +4367,7 @@ void LLVOAvatar::updateOrientation(LLAgent& agent, F32 speed, F32 delta_time)
                 // am I done turning?
                 if (angle < pelvis_rot_threshold)
                 {
-                    mTurning = FALSE;
+                    mTurning = false;
                 }
 
                 LLVector3 correction_vector = (pelvisDir - fwdDir) * clamp_rescale(angle, pelvis_rot_threshold*0.75f, pelvis_rot_threshold, 1.0f, 0.0f);
@@ -4321,7 +4375,7 @@ void LLVOAvatar::updateOrientation(LLAgent& agent, F32 speed, F32 delta_time)
             }
             else
             {
-                mTurning = FALSE;
+                mTurning = false;
             }
 
             // Now compute the full world space rotation for the whole body (wQv)
@@ -4453,7 +4507,7 @@ void LLVOAvatar::updateRootPositionAndRotation(LLAgent& agent, F32 speed, bool w
         LLVector3 normal;
         resolveHeightGlobal(root_pos, ground_under_pelvis, normal);
         F32 foot_to_ground = (F32) (root_pos.mdV[VZ] - mPelvisToFoot - ground_under_pelvis.mdV[VZ]);
-        BOOL in_air = ((!LLWorld::getInstance()->getRegionFromPosGlobal(ground_under_pelvis)) ||
+        bool in_air = ((!LLWorld::getInstance()->getRegionFromPosGlobal(ground_under_pelvis)) ||
                         foot_to_ground > FOOT_GROUND_COLLISION_TOLERANCE);
 
         if (in_air && !mInAir)
@@ -4569,12 +4623,12 @@ bool LLVOAvatar::computeNeedsUpdate()
     {
         if (needs_update_by_max_time)
         {
-            mNeedsImpostorUpdate = TRUE;
+            mNeedsImpostorUpdate = true;
             mLastImpostorUpdateReason = 11;
         }
         else
         {
-            //mNeedsImpostorUpdate = TRUE;
+            //mNeedsImpostorUpdate = true;
             //mLastImpostorUpdateReason = 10;
         }
     }
@@ -4609,10 +4663,10 @@ bool LLVOAvatar::updateCharacter(LLAgent &agent)
 
     if (!mIsBuilt)
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL visible = isVisible();
+    bool visible = isVisible();
     bool is_control_avatar = isControlAvatar(); // capture state to simplify tracing
     bool is_attachment = false;
 
@@ -4649,7 +4703,7 @@ bool LLVOAvatar::updateCharacter(LLAgent &agent)
     if (!needs_update && !isSelf())
     {
         updateMotions(LLCharacter::HIDDEN_UPDATE);
-        return FALSE;
+        return false;
     }
 
     //--------------------------------------------------------------------
@@ -4747,7 +4801,7 @@ bool LLVOAvatar::updateCharacter(LLAgent &agent)
     if (visible)
     {
         // System avatar mesh vertices need to be reskinned.
-        mNeedsSkin = TRUE;
+        mNeedsSkin = true;
     }
 
     return visible;
@@ -4859,37 +4913,37 @@ void LLVOAvatar::postPelvisSetRecalc()
 //------------------------------------------------------------------------
 void LLVOAvatar::updateVisibility()
 {
-    BOOL visible = FALSE;
+    bool visible = false;
 
     if (mIsDummy)
     {
-        visible = FALSE;
+        visible = false;
     }
     else if (mDrawable.isNull())
     {
-        visible = FALSE;
+        visible = false;
     }
     else
     {
         if (!mDrawable->getSpatialGroup() || mDrawable->getSpatialGroup()->isVisible())
         {
-            visible = TRUE;
+            visible = true;
         }
         else
         {
-            visible = FALSE;
+            visible = false;
         }
 
         if(isSelf())
         {
             if (!gAgentWearables.areWearablesLoaded())
             {
-                visible = FALSE;
+                visible = false;
             }
         }
         else if( !mFirstAppearanceMessageReceived )
         {
-            visible = FALSE;
+            visible = false;
         }
 
         if (sDebugInvisible)
@@ -5030,7 +5084,7 @@ U32 LLVOAvatar::renderSkinned()
         {
             updateMeshData();
             mDirtyMesh = 0;
-            mNeedsSkin = TRUE;
+            mNeedsSkin = true;
             mDrawable->clearState(LLDrawable::REBUILD_GEOMETRY);
         }
     }
@@ -5079,7 +5133,7 @@ U32 LLVOAvatar::renderSkinned()
                     hair_mesh->updateJointGeometry();
                 }
             }
-            mNeedsSkin = FALSE;
+            mNeedsSkin = false;
             mLastSkinTime = gFrameTimeSeconds;
 
             LLFace * face = mDrawable->getFace(0);
@@ -5095,7 +5149,7 @@ U32 LLVOAvatar::renderSkinned()
     }
     else
     {
-        mNeedsSkin = FALSE;
+        mNeedsSkin = false;
     }
 
     if (sDebugInvisible)
@@ -5137,7 +5191,7 @@ U32 LLVOAvatar::renderSkinned()
     // render all geometry attached to the skeleton
     //--------------------------------------------------------------------
 
-        BOOL first_pass = TRUE;
+        bool first_pass = true;
         if (!LLDrawPoolAvatar::sSkipOpaque)
         {
             if (isUIAvatar() && mIsDummy)
@@ -5147,7 +5201,7 @@ U32 LLVOAvatar::renderSkinned()
                 {
                     num_indices += hair_mesh->render(mAdjustedPixelArea, first_pass, mIsDummy);
                 }
-                first_pass = FALSE;
+                first_pass = false;
             }
             if (!isSelf() || gAgent.needsRenderHead() || LLPipeline::sShadowRender)
             {
@@ -5159,7 +5213,7 @@ U32 LLVOAvatar::renderSkinned()
                     {
                         num_indices += head_mesh->render(mAdjustedPixelArea, first_pass, mIsDummy);
                     }
-                    first_pass = FALSE;
+                    first_pass = false;
                 }
             }
             if (isTextureVisible(TEX_UPPER_BAKED) || (getOverallAppearance() == AOA_JELLYDOLL && !isControlAvatar()) || isUIAvatar())
@@ -5169,7 +5223,7 @@ U32 LLVOAvatar::renderSkinned()
                 {
                     num_indices += upper_mesh->render(mAdjustedPixelArea, first_pass, mIsDummy);
                 }
-                first_pass = FALSE;
+                first_pass = false;
             }
 
             if (isTextureVisible(TEX_LOWER_BAKED) || (getOverallAppearance() == AOA_JELLYDOLL && !isControlAvatar()) || isUIAvatar())
@@ -5179,7 +5233,7 @@ U32 LLVOAvatar::renderSkinned()
                 {
                     num_indices += lower_mesh->render(mAdjustedPixelArea, first_pass, mIsDummy);
                 }
-                first_pass = FALSE;
+                first_pass = false;
             }
         }
 
@@ -5192,7 +5246,7 @@ U32 LLVOAvatar::renderSkinned()
     return num_indices;
 }
 
-U32 LLVOAvatar::renderTransparent(BOOL first_pass)
+U32 LLVOAvatar::renderTransparent(bool first_pass)
 {
     U32 num_indices = 0;
     if( isWearingWearableType( LLWearableType::WT_SKIRT ) && (isUIAvatar() || isTextureVisible(TEX_SKIRT_BAKED)) )
@@ -5201,9 +5255,9 @@ U32 LLVOAvatar::renderTransparent(BOOL first_pass)
         LLViewerJoint* skirt_mesh = getViewerJoint(MESH_ID_SKIRT);
         if (skirt_mesh)
         {
-            num_indices += skirt_mesh->render(mAdjustedPixelArea, FALSE);
+            num_indices += skirt_mesh->render(mAdjustedPixelArea, false);
         }
-        first_pass = FALSE;
+        first_pass = false;
         gGL.flush();
     }
 
@@ -5221,7 +5275,7 @@ U32 LLVOAvatar::renderTransparent(BOOL first_pass)
             {
                 num_indices += eyelash_mesh->render(mAdjustedPixelArea, first_pass, mIsDummy);
             }
-            first_pass = FALSE;
+            first_pass = false;
         }
         if (isTextureVisible(TEX_HAIR_BAKED) && (getOverallAppearance() != AOA_JELLYDOLL))
         {
@@ -5230,7 +5284,7 @@ U32 LLVOAvatar::renderTransparent(BOOL first_pass)
             {
                 num_indices += hair_mesh->render(mAdjustedPixelArea, first_pass, mIsDummy);
             }
-            first_pass = FALSE;
+            first_pass = false;
         }
         if (LLPipeline::sImpostorRender)
         {
@@ -5264,11 +5318,11 @@ U32 LLVOAvatar::renderRigid()
         LLViewerJoint* eyeball_right = getViewerJoint(MESH_ID_EYEBALL_RIGHT);
         if (eyeball_left)
         {
-            num_indices += eyeball_left->render(mAdjustedPixelArea, TRUE, mIsDummy);
+            num_indices += eyeball_left->render(mAdjustedPixelArea, true, mIsDummy);
         }
         if(eyeball_right)
         {
-            num_indices += eyeball_right->render(mAdjustedPixelArea, TRUE, mIsDummy);
+            num_indices += eyeball_right->render(mAdjustedPixelArea, true, mIsDummy);
         }
     }
 
@@ -5378,7 +5432,7 @@ std::string LLVOAvatar::bakedTextureOriginInfo()
     {
         ETextureIndex texture_index = mBakedTextureDatas[i].mTextureIndex;
         LLViewerFetchedTexture *imagep =
-            LLViewerTextureManager::staticCastToFetchedTexture(getImage(texture_index,0), TRUE);
+            LLViewerTextureManager::staticCastToFetchedTexture(getImage(texture_index,0), true);
         if (!imagep ||
             imagep->getID() == IMG_DEFAULT ||
             imagep->getID() == IMG_DEFAULT_AVATAR)
@@ -5436,7 +5490,7 @@ void LLVOAvatar::collectLocalTextureUUIDs(std::set<LLUUID>& ids) const
         LLViewerFetchedTexture *imagep = NULL;
         for (U32 wearable_index = 0; wearable_index < num_wearables; wearable_index++)
         {
-            imagep = LLViewerTextureManager::staticCastToFetchedTexture(getImage(texture_index, wearable_index), TRUE);
+            imagep = LLViewerTextureManager::staticCastToFetchedTexture(getImage(texture_index, wearable_index), true);
             if (imagep)
             {
                 const LLAvatarAppearanceDictionary::TextureEntry *texture_dict = LLAvatarAppearance::getDictionary()->getTexture((ETextureIndex)texture_index);
@@ -5459,7 +5513,7 @@ void LLVOAvatar::collectBakedTextureUUIDs(std::set<LLUUID>& ids) const
         LLViewerFetchedTexture *imagep = NULL;
         if (isIndexBakedTexture((ETextureIndex) texture_index))
         {
-            imagep = LLViewerTextureManager::staticCastToFetchedTexture(getImage(texture_index,0), TRUE);
+            imagep = LLViewerTextureManager::staticCastToFetchedTexture(getImage(texture_index,0), true);
             if (imagep)
             {
                 ids.insert(imagep->getID());
@@ -5531,7 +5585,7 @@ void LLVOAvatar::updateTextures()
 {
     releaseOldTextures();
 
-    BOOL render_avatar = TRUE;
+    bool render_avatar = true;
 
     if (mIsDummy)
     {
@@ -5540,7 +5594,7 @@ void LLVOAvatar::updateTextures()
 
     if( isSelf() )
     {
-        render_avatar = TRUE;
+        render_avatar = true;
     }
     else
     {
@@ -5552,7 +5606,7 @@ void LLVOAvatar::updateTextures()
         render_avatar = !mCulled; //visible and not culled.
     }
 
-    std::vector<BOOL> layer_baked;
+    std::vector<bool> layer_baked;
     // GL NOT ACTIVE HERE - *TODO
     for (U32 i = 0; i < mBakedTextureDatas.size(); i++)
     {
@@ -5570,7 +5624,7 @@ void LLVOAvatar::updateTextures()
 
     mMaxPixelArea = 0.f;
     mMinPixelArea = 99999999.f;
-    mHasGrey = FALSE; // debug
+    mHasGrey = false; // debug
     for (U32 texture_index = 0; texture_index < getNumTEs(); texture_index++)
     {
         LLWearableType::EType wearable_type = LLAvatarAppearance::getDictionary()->getTEWearableType((ETextureIndex)texture_index);
@@ -5593,7 +5647,7 @@ void LLVOAvatar::updateTextures()
         LLViewerFetchedTexture *imagep = NULL;
         for (U32 wearable_index = 0; wearable_index < num_wearables; wearable_index++)
         {
-            imagep = LLViewerTextureManager::staticCastToFetchedTexture(getImage(texture_index, wearable_index), TRUE);
+            imagep = LLViewerTextureManager::staticCastToFetchedTexture(getImage(texture_index, wearable_index), true);
             if (imagep)
             {
                 const LLAvatarAppearanceDictionary::TextureEntry *texture_dict = LLAvatarAppearance::getDictionary()->getTexture((ETextureIndex)texture_index);
@@ -5607,7 +5661,7 @@ void LLVOAvatar::updateTextures()
         if (isIndexBakedTexture((ETextureIndex) texture_index) && render_avatar)
         {
             const S32 boost_level = getAvatarBakedBoostLevel();
-            imagep = LLViewerTextureManager::staticCastToFetchedTexture(getImage(texture_index,0), TRUE);
+            imagep = LLViewerTextureManager::staticCastToFetchedTexture(getImage(texture_index,0), true);
             addBakedTextureStats( imagep, mPixelArea, texel_area_ratio, boost_level );
         }
     }
@@ -5620,7 +5674,7 @@ void LLVOAvatar::updateTextures()
 
 
 void LLVOAvatar::addLocalTextureStats( ETextureIndex idx, LLViewerFetchedTexture* imagep,
-                                       F32 texel_area_ratio, BOOL render_avatar, BOOL covered_by_baked)
+                                       F32 texel_area_ratio, bool render_avatar, bool covered_by_baked)
 {
     // No local texture stats for non-self avatars
     return;
@@ -5632,7 +5686,7 @@ void LLVOAvatar::checkTextureLoading()
 {
     static const F32 MAX_INVISIBLE_WAITING_TIME = 15.f ; //seconds
 
-    BOOL pause = !isVisible() ;
+    bool pause = !isVisible() ;
     if(!pause)
     {
         mInvisibleTimer.reset() ;
@@ -5669,7 +5723,7 @@ void LLVOAvatar::checkTextureLoading()
         return ; //have not been invisible for enough time.
     }
 
-    mLoadedCallbackTextures = pause ? mCallbackTextureList.size() : 0;
+    mLoadedCallbackTextures = pause ? static_cast<S32>(mCallbackTextureList.size()) : 0;
 
     for(LLLoadedCallbackEntry::source_callback_list_t::iterator iter = mCallbackTextureList.begin();
         iter != mCallbackTextureList.end(); ++iter)
@@ -5799,13 +5853,13 @@ void LLVOAvatar::resolveHeightGlobal(const LLVector3d &inPos, LLVector3d &outPos
     LLWorld::getInstance()->resolveStepHeightGlobal(this, p0, p1, outPos, outNorm, &obj);
     if (!obj)
     {
-        mStepOnLand = TRUE;
+        mStepOnLand = true;
         mStepMaterial = 0;
         mStepObjectVelocity.setVec(0.0f, 0.0f, 0.0f);
     }
     else
     {
-        mStepOnLand = FALSE;
+        mStepOnLand = false;
         mStepMaterial = obj->getMaterial();
 
         // We want the primitive velocity, not our velocity... (which actually subtracts the
@@ -5884,7 +5938,7 @@ void LLVOAvatar::processAnimationStateChanges()
         // playing, but not signaled, so stop
         if (found_anim == mSignaledAnimations.end())
         {
-            processSingleAnimationStateChange(anim_it->first, FALSE);
+            processSingleAnimationStateChange(anim_it->first, false);
             mPlayingAnimations.erase(anim_it++);
             continue;
         }
@@ -5908,7 +5962,7 @@ void LLVOAvatar::processAnimationStateChanges()
             // signaled but not playing, or different sequence id, start motion
             if (found_anim == mPlayingAnimations.end() || found_anim->second != anim_it->second)
             {
-                if (processSingleAnimationStateChange(anim_it->first, TRUE))
+                if (processSingleAnimationStateChange(anim_it->first, true))
                 {
                     mPlayingAnimations[anim_it->first] = anim_it->second;
                     ++anim_it;
@@ -5945,7 +5999,7 @@ void LLVOAvatar::processAnimationStateChanges()
 //-----------------------------------------------------------------------------
 // processSingleAnimationStateChange();
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatar::processSingleAnimationStateChange( const LLUUID& anim_id, BOOL start )
+bool LLVOAvatar::processSingleAnimationStateChange( const LLUUID& anim_id, bool start )
 {
     // SL-402, SL-427 - we need to update body size often enough to
     // keep appearances in sync, but not so often that animations
@@ -5953,7 +6007,7 @@ BOOL LLVOAvatar::processSingleAnimationStateChange( const LLUUID& anim_id, BOOL
     // compromise is to do it on animation changes:
     computeBodySize();
 
-    BOOL result = FALSE;
+    bool result = false;
 
     if ( start ) // start animation
     {
@@ -5982,13 +6036,13 @@ BOOL LLVOAvatar::processSingleAnimationStateChange( const LLUUID& anim_id, BOOL
         }
         else if (anim_id == ANIM_AGENT_SIT_GROUND_CONSTRAINED)
         {
-            sitDown(TRUE);
+            sitDown(true);
         }
 
 
         if (startMotion(anim_id))
         {
-            result = TRUE;
+            result = true;
         }
         else
         {
@@ -5999,7 +6053,7 @@ BOOL LLVOAvatar::processSingleAnimationStateChange( const LLUUID& anim_id, BOOL
     {
         if (anim_id == ANIM_AGENT_SIT_GROUND_CONSTRAINED)
         {
-            sitDown(FALSE);
+            sitDown(false);
         }
         if ((anim_id == ANIM_AGENT_DO_NOT_DISTURB) && gAgent.isDoNotDisturb())
         {
@@ -6008,7 +6062,7 @@ BOOL LLVOAvatar::processSingleAnimationStateChange( const LLUUID& anim_id, BOOL
             return result;
         }
         stopMotion(anim_id);
-        result = TRUE;
+        result = true;
     }
 
     return result;
@@ -6017,16 +6071,16 @@ BOOL LLVOAvatar::processSingleAnimationStateChange( const LLUUID& anim_id, BOOL
 //-----------------------------------------------------------------------------
 // isAnyAnimationSignaled()
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatar::isAnyAnimationSignaled(const LLUUID *anim_array, const S32 num_anims) const
+bool LLVOAvatar::isAnyAnimationSignaled(const LLUUID *anim_array, const S32 num_anims) const
 {
     for (S32 i = 0; i < num_anims; i++)
     {
         if(mSignaledAnimations.find(anim_array[i]) != mSignaledAnimations.end())
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
@@ -6097,7 +6151,7 @@ LLUUID LLVOAvatar::remapMotionID(const LLUUID& id)
 // id is the asset if of the animation to start
 // time_offset is the offset into the animation at which to start playing
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatar::startMotion(const LLUUID& id, F32 time_offset)
+bool LLVOAvatar::startMotion(const LLUUID& id, F32 time_offset)
 {
     LL_DEBUGS("Motion") << "motion requested " << id.asString() << " " << gAnimLibrary.animationName(id) << LL_ENDL;
 
@@ -6119,7 +6173,7 @@ BOOL LLVOAvatar::startMotion(const LLUUID& id, F32 time_offset)
 //-----------------------------------------------------------------------------
 // stopMotion()
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatar::stopMotion(const LLUUID& id, BOOL stop_immediate)
+bool LLVOAvatar::stopMotion(const LLUUID& id, bool stop_immediate)
 {
     LL_DEBUGS("Motion") << "Motion requested " << id.asString() << " " << gAnimLibrary.animationName(id) << LL_ENDL;
 
@@ -6548,8 +6602,8 @@ void LLVOAvatar::addAttachmentOverridesForObject(LLViewerObject *vo, std::set<LL
 
     if ( vobj && vobj->isMesh() && pSkinData )
     {
-        const int bindCnt = pSkinData->mAlternateBindMatrix.size();
-        const int jointCnt = pSkinData->mJointNames.size();
+        const unsigned int bindCnt = static_cast<unsigned int>(pSkinData->mAlternateBindMatrix.size());
+        const unsigned int jointCnt = static_cast<unsigned int>(pSkinData->mJointNames.size());
         if ((bindCnt > 0) && (bindCnt != jointCnt))
         {
             LL_WARNS_ONCE() << "invalid mesh, bindCnt " << bindCnt << "!= jointCnt " << jointCnt << ", joint overrides will be ignored." << LL_ENDL;
@@ -6576,10 +6630,10 @@ void LLVOAvatar::addAttachmentOverridesForObject(LLViewerObject *vo, std::set<LL
                 LL_DEBUGS("AnimatedObjects") << "adding attachment overrides for " << mesh_id
                                              << " to root object " << root_object->getID() << LL_ENDL;
             }
-            bool fullRig = (jointCnt>=JOINT_COUNT_REQUIRED_FOR_FULLRIG) ? true : false;
+            bool fullRig = jointCnt >= JOINT_COUNT_REQUIRED_FOR_FULLRIG;
             if ( fullRig && !mesh_overrides_loaded )
             {
-                for ( int i=0; i<jointCnt; ++i )
+                for (unsigned int i = 0; i < jointCnt; ++i)
                 {
                     std::string lookingForJoint = pSkinData->mJointNames[i].c_str();
                     LLJoint* pJoint = getJoint( lookingForJoint );
@@ -6608,6 +6662,7 @@ void LLVOAvatar::addAttachmentOverridesForObject(LLViewerObject *vo, std::set<LL
                         }
                     }
                 }
+
                 if (pelvisZOffset != 0.0F)
                 {
                     F32 pelvis_fixup_before;
@@ -6674,7 +6729,6 @@ void LLVOAvatar::getAttachmentOverrideNames(std::set<std::string>& pos_names, st
         }
         // Attachment points don't have scales.
     }
-
 }
 
 //-----------------------------------------------------------------------------
@@ -6694,6 +6748,7 @@ void LLVOAvatar::showAttachmentOverrides(bool verbose) const
     {
         LL_DEBUGS("Avatar") << getFullname() << " no attachment positions defined for any joints" << "\n" << LL_ENDL;
     }
+
     if (scale_names.size())
     {
         std::stringstream ss;
@@ -6789,17 +6844,17 @@ void LLVOAvatar::removeAttachmentOverridesForObject(const LLUUID& mesh_id)
     for (S32 joint_num = 0; joint_num < LL_CHARACTER_MAX_ANIMATED_JOINTS; joint_num++)
     {
         LLJoint *pJoint = getJoint(joint_num);
-        if ( pJoint )
+        if (pJoint)
         {
             bool dummy; // unused
             pJoint->removeAttachmentPosOverride(mesh_id, av_string, dummy);
             pJoint->removeAttachmentScaleOverride(mesh_id, av_string);
         }
-        if ( pJoint && pJoint == pJointPelvis)
+        if (pJoint && pJoint == pJointPelvis)
         {
-            removePelvisFixup( mesh_id );
+            removePelvisFixup(mesh_id);
             // SL-315
-            pJoint->setPosition( LLVector3( 0.0f, 0.0f, 0.0f) );
+            pJoint->setPosition(LLVector3( 0.0f, 0.0f, 0.0f));
         }
     }
 
@@ -6808,6 +6863,7 @@ void LLVOAvatar::removeAttachmentOverridesForObject(const LLUUID& mesh_id)
     mActiveOverrideMeshes.erase(mesh_id);
     onActiveOverrideMeshesChanged();
 }
+
 //-----------------------------------------------------------------------------
 // getCharacterPosition()
 //-----------------------------------------------------------------------------
@@ -6823,7 +6879,6 @@ LLVector3 LLVOAvatar::getCharacterPosition()
     }
 }
 
-
 //-----------------------------------------------------------------------------
 // LLVOAvatar::getCharacterRotation()
 //-----------------------------------------------------------------------------
@@ -6832,7 +6887,6 @@ LLQuaternion LLVOAvatar::getCharacterRotation()
     return getRotation();
 }
 
-
 //-----------------------------------------------------------------------------
 // LLVOAvatar::getCharacterVelocity()
 //-----------------------------------------------------------------------------
@@ -6841,7 +6895,6 @@ LLVector3 LLVOAvatar::getCharacterVelocity()
     return getVelocity() - mStepObjectVelocity;
 }
 
-
 //-----------------------------------------------------------------------------
 // LLVOAvatar::getCharacterAngularVelocity()
 //-----------------------------------------------------------------------------
@@ -6881,7 +6934,6 @@ F32 LLVOAvatar::getTimeDilation()
     return mRegionp ? mRegionp->getTimeDilation() : 1.f;
 }
 
-
 //-----------------------------------------------------------------------------
 // LLVOAvatar::getPixelArea()
 //-----------------------------------------------------------------------------
@@ -6894,8 +6946,6 @@ F32 LLVOAvatar::getPixelArea() const
     return mPixelArea;
 }
 
-
-
 //-----------------------------------------------------------------------------
 // LLVOAvatar::getPosGlobalFromAgent()
 //-----------------------------------------------------------------------------
@@ -6912,7 +6962,6 @@ LLVector3   LLVOAvatar::getPosAgentFromGlobal(const LLVector3d &position)
     return gAgent.getPosAgentFromGlobal(position);
 }
 
-
 //-----------------------------------------------------------------------------
 // requestStopMotion()
 //-----------------------------------------------------------------------------
@@ -6926,17 +6975,17 @@ void LLVOAvatar::requestStopMotion( LLMotion* motion )
 // loadSkeletonNode(): loads <skeleton> node from XML tree
 //-----------------------------------------------------------------------------
 //virtual
-BOOL LLVOAvatar::loadSkeletonNode ()
+bool LLVOAvatar::loadSkeletonNode ()
 {
     if (!LLAvatarAppearance::loadSkeletonNode())
     {
-        return FALSE;
+        return false;
     }
 
     bool ignore_hud_joints = false;
     initAttachmentPoints(ignore_hud_joints);
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -7069,9 +7118,9 @@ void LLVOAvatar::updateVisualParams()
 //-----------------------------------------------------------------------------
 // isActive()
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatar::isActive() const
+bool LLVOAvatar::isActive() const
 {
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -7117,7 +7166,7 @@ void LLVOAvatar::setPixelAreaAndAngle(LLAgent &agent)
 //-----------------------------------------------------------------------------
 // updateJointLODs()
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatar::updateJointLODs()
+bool LLVOAvatar::updateJointLODs()
 {
     const F32 MAX_PIXEL_AREA = 100000000.f;
     F32 lod_factor = (sLODFactor * AVATAR_LOD_TWEAK_RANGE + (1.f - AVATAR_LOD_TWEAK_RANGE));
@@ -7148,19 +7197,19 @@ BOOL LLVOAvatar::updateJointLODs()
 
         // now select meshes to render based on adjusted pixel area
         LLViewerJoint* root = dynamic_cast<LLViewerJoint*>(mRoot);
-        BOOL res = FALSE;
+        bool res = false;
         if (root)
         {
-            res = root->updateLOD(mAdjustedPixelArea, TRUE);
+            res = root->updateLOD(mAdjustedPixelArea, true);
         }
         if (res)
         {
             sNumLODChangesThisFrame++;
             dirtyMesh(2);
-            return TRUE;
+            return true;
         }
 
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
@@ -7169,7 +7218,7 @@ BOOL LLVOAvatar::updateJointLODs()
 LLDrawable *LLVOAvatar::createDrawable(LLPipeline *pipeline)
 {
     pipeline->allocDrawable(this);
-    mDrawable->setLit(FALSE);
+    mDrawable->setLit(false);
 
     LLDrawPoolAvatar *poolp = (LLDrawPoolAvatar*)gPipeline.getPool(mIsControlAvatar ? LLDrawPool::POOL_CONTROL_AV : LLDrawPool::POOL_AVATAR);
 
@@ -7192,24 +7241,24 @@ void LLVOAvatar::updateGL()
     {
         LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR
         updateMeshTextures();
-        mMeshTexturesDirty = FALSE;
+        mMeshTexturesDirty = false;
     }
 }
 
 //-----------------------------------------------------------------------------
 // updateGeometry()
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatar::updateGeometry(LLDrawable *drawable)
+bool LLVOAvatar::updateGeometry(LLDrawable *drawable)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
     if (!(gPipeline.hasRenderType(mIsControlAvatar ? LLPipeline::RENDER_TYPE_CONTROL_AV : LLPipeline::RENDER_TYPE_AVATAR)))
     {
-        return TRUE;
+        return true;
     }
 
     if (!mMeshValid)
     {
-        return TRUE;
+        return true;
     }
 
     if (!drawable)
@@ -7217,7 +7266,7 @@ BOOL LLVOAvatar::updateGeometry(LLDrawable *drawable)
         LL_ERRS() << "LLVOAvatar::updateGeometry() called with NULL drawable" << LL_ENDL;
     }
 
-    return TRUE;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
@@ -7255,7 +7304,7 @@ LLViewerJoint*  LLVOAvatar::getViewerJoint(S32 idx)
 //-----------------------------------------------------------------------------
 void LLVOAvatar::hideHair()
 {
-    mMeshLOD[MESH_ID_HAIR]->setVisible(FALSE, TRUE);
+    mMeshLOD[MESH_ID_HAIR]->setVisible(false, true);
 }
 
 //-----------------------------------------------------------------------------
@@ -7263,12 +7312,12 @@ void LLVOAvatar::hideHair()
 //-----------------------------------------------------------------------------
 void LLVOAvatar::hideSkirt()
 {
-    mMeshLOD[MESH_ID_SKIRT]->setVisible(FALSE, TRUE);
+    mMeshLOD[MESH_ID_SKIRT]->setVisible(false, true);
 }
 
-BOOL LLVOAvatar::setParent(LLViewerObject* parent)
+bool LLVOAvatar::setParent(LLViewerObject* parent)
 {
-    BOOL ret ;
+    bool ret ;
     if (parent == NULL)
     {
         getOffObject();
@@ -7453,9 +7502,9 @@ S32 LLVOAvatar::getMaxAttachments() const
 // canAttachMoreObjects()
 // Returns true if we can attach <n> more objects.
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatar::canAttachMoreObjects(U32 n) const
+bool LLVOAvatar::canAttachMoreObjects(U32 n) const
 {
-    return (getNumAttachments() + n) <= getMaxAttachments();
+    return (getNumAttachments() + n) <= (U32)getMaxAttachments();
 }
 
 //-----------------------------------------------------------------------------
@@ -7487,9 +7536,9 @@ S32 LLVOAvatar::getMaxAnimatedObjectAttachments() const
 // canAttachMoreAnimatedObjects()
 // Returns true if we can attach <n> more animated objects.
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatar::canAttachMoreAnimatedObjects(U32 n) const
+bool LLVOAvatar::canAttachMoreAnimatedObjects(U32 n) const
 {
-    return (getNumAnimatedObjectAttachments() + n) <= getMaxAnimatedObjectAttachments();
+    return (getNumAnimatedObjectAttachments() + n) <= (U32)getMaxAnimatedObjectAttachments();
 }
 
 //-----------------------------------------------------------------------------
@@ -7676,7 +7725,7 @@ bool LLVOAvatar::hasPendingAttachedMeshes()
 //-----------------------------------------------------------------------------
 // detachObject()
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatar::detachObject(LLViewerObject *viewer_object)
+bool LLVOAvatar::detachObject(LLViewerObject *viewer_object)
 {
     for (attachment_map_t::iterator iter = mAttachmentPoints.begin();
          iter != mAttachmentPoints.end();
@@ -7711,7 +7760,7 @@ BOOL LLVOAvatar::detachObject(LLViewerObject *viewer_object)
             updateMeshVisibility();
 
             LL_DEBUGS() << "Detaching object " << viewer_object->mID << " from " << attachment->getName() << LL_ENDL;
-            return TRUE;
+            return true;
         }
     }
 
@@ -7719,16 +7768,16 @@ BOOL LLVOAvatar::detachObject(LLViewerObject *viewer_object)
     if (iter != mPendingAttachment.end())
     {
         mPendingAttachment.erase(iter);
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
 // sitDown()
 //-----------------------------------------------------------------------------
-void LLVOAvatar::sitDown(BOOL bSitting)
+void LLVOAvatar::sitDown(bool bSitting)
 {
     mIsSitting = bSitting;
     if (isSelf())
@@ -7748,7 +7797,7 @@ void LLVOAvatar::sitOnObject(LLViewerObject *sit_object)
         // Might be first sit
         //LLFirstUse::useSit();
 
-        gAgent.setFlying(FALSE);
+        gAgent.setFlying(false);
         gAgentCamera.setThirdPersonHeadOffset(LLVector3::zero);
         //interpolate to new camera position
         gAgentCamera.startCameraAnimation();
@@ -7787,10 +7836,10 @@ void LLVOAvatar::sitOnObject(LLViewerObject *sit_object)
     mDrawable->mXform.setPosition(rel_pos);
     mDrawable->mXform.setRotation(mDrawable->getWorldRotation() * inv_obj_rot);
 
-    gPipeline.markMoved(mDrawable, TRUE);
+    gPipeline.markMoved(mDrawable, true);
     // Notice that removing sitDown() from here causes avatars sitting on
     // objects to be not rendered for new arrivals. See EXT-6835 and EXT-1655.
-    sitDown(TRUE);
+    sitDown(true);
     mRoot->getXform()->setParent(&sit_object->mDrawable->mXform); // LLVOAvatar::sitOnObject
     // SL-315
     mRoot->setPosition(getPosition());
@@ -7816,7 +7865,7 @@ void LLVOAvatar::getOffObject()
     if (sit_object)
     {
         stopMotionFromSource(sit_object->getID());
-        LLFollowCamMgr::getInstance()->setCameraActive(sit_object->getID(), FALSE);
+        LLFollowCamMgr::getInstance()->setCameraActive(sit_object->getID(), false);
 
         LLViewerObject::const_child_list_t& child_list = sit_object->getChildren();
         for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin();
@@ -7825,7 +7874,7 @@ void LLVOAvatar::getOffObject()
             LLViewerObject* child_objectp = *iter;
 
             stopMotionFromSource(child_objectp->getID());
-            LLFollowCamMgr::getInstance()->setCameraActive(child_objectp->getID(), FALSE);
+            LLFollowCamMgr::getInstance()->setCameraActive(child_objectp->getID(), false);
         }
     }
 
@@ -7847,9 +7896,9 @@ void LLVOAvatar::getOffObject()
     mDrawable->mXform.setPosition(cur_position_world);
     mDrawable->mXform.setRotation(cur_rotation_world);
 
-    gPipeline.markMoved(mDrawable, TRUE);
+    gPipeline.markMoved(mDrawable, true);
 
-    sitDown(FALSE);
+    sitDown(false);
 
     mRoot->getXform()->setParent(NULL); // LLVOAvatar::getOffObject
     // SL-315
@@ -7899,15 +7948,22 @@ LLVOAvatar* LLVOAvatar::findAvatarFromAttachment( LLViewerObject* obj )
     return NULL;
 }
 
-S32 LLVOAvatar::getAttachmentCount()
+S32 LLVOAvatar::getAttachmentCount() const
 {
-    S32 count = mAttachmentPoints.size();
-    return count;
+    size_t count = 0;
+
+    for (attachment_map_t::const_iterator iter = mAttachmentPoints.begin(); iter != mAttachmentPoints.end(); ++iter)
+    {
+        LLViewerJointAttachment* pAttachment = iter->second;
+        count += pAttachment->mAttachedObjects.size();
+    }
+
+    return static_cast<S32>(count);
 }
 
-BOOL LLVOAvatar::isWearingWearableType(LLWearableType::EType type) const
+bool LLVOAvatar::isWearingWearableType(LLWearableType::EType type) const
 {
-    if (mIsDummy) return TRUE;
+    if (mIsDummy) return true;
 
     if (isSelf())
     {
@@ -7920,7 +7976,7 @@ BOOL LLVOAvatar::isWearingWearableType(LLWearableType::EType type) const
         case LLWearableType::WT_SKIN:
         case LLWearableType::WT_HAIR:
         case LLWearableType::WT_EYES:
-            return TRUE;  // everyone has all bodyparts
+            return true;  // everyone has all bodyparts
         default:
             break; // Do nothing
     }
@@ -7941,10 +7997,10 @@ BOOL LLVOAvatar::isWearingWearableType(LLWearableType::EType type) const
                 const EBakedTextureIndex baked_index = texture_dict->mBakedTextureIndex;
                 return isTextureDefined(LLAvatarAppearance::getDictionary()->getBakedTexture(baked_index)->mTextureIndex);
             }
-            return FALSE;
+            return false;
         }
     }
-    return FALSE;
+    return false;
 }
 
 LLViewerObject *    LLVOAvatar::findAttachmentByID( const LLUUID & target_id ) const
@@ -8038,11 +8094,13 @@ bool LLVOAvatar::shouldRenderRigged() const
 // related to whether the actual avatar mesh is shown, and isVisible()
 // to whether anything about the avatar is displayed in the scene.
 // Maybe better naming could make this clearer?
-BOOL LLVOAvatar::isVisible() const
+bool LLVOAvatar::isVisible() const
 {
+    static LLCachedControl<bool> friends_only(gSavedSettings, "RenderAvatarFriendsOnly", false);
     return mDrawable.notNull()
         && (!mOrphaned || isSelf())
-        && (mDrawable->isVisible() || mIsDummy);
+        && (mDrawable->isVisible() || mIsDummy)
+        && (!friends_only() || isUIAvatar() || isSelf() || isControlAvatar() || isBuddy());
 }
 
 // Determine if we have enough avatar data to render
@@ -8064,7 +8122,7 @@ bool LLVOAvatar::getIsCloud() const
 void LLVOAvatar::updateRezzedStatusTimers(S32 rez_status)
 {
     // State machine for rezzed status. Statuses are -1 on startup, 0
-    // = cloud, 1 = gray, 2 = downloading, 3 = full.
+    // = cloud, 1 = gray, 2 = downloading, 3 = waiting for attachments, 4 = full.
     // Purpose is to collect time data for each it takes avatar to reach
     // various loading landmarks: gray, textured (partial), textured fully.
 
@@ -8097,7 +8155,7 @@ void LLVOAvatar::updateRezzedStatusTimers(S32 rez_status)
                 stopPhase("load_" + LLVOAvatar::rezStatusToString(i));
                 stopPhase("first_load_" + LLVOAvatar::rezStatusToString(i), false);
             }
-            if (rez_status == 3)
+            if (rez_status == 4)
             {
                 // "fully loaded", mark any pending appearance change complete.
                 selfStopPhase("update_appearance_from_cof");
@@ -8108,6 +8166,12 @@ void LLVOAvatar::updateRezzedStatusTimers(S32 rez_status)
             }
         }
         mLastRezzedStatus = rez_status;
+
+        static LLUICachedControl<bool> show_rez_status("NameTagDebugAVRezState", false);
+        if (show_rez_status)
+        {
+            mNameIsSet = false;
+        }
     }
 }
 
@@ -8235,10 +8299,10 @@ void LLVOAvatar::logMetricsTimerRecord(const std::string& phase_name, F32 elapse
 
 // call periodically to keep isFullyLoaded up to date.
 // returns true if the value has changed.
-BOOL LLVOAvatar::updateIsFullyLoaded()
+bool LLVOAvatar::updateIsFullyLoaded()
 {
     S32 rez_status = getRezzedStatus();
-    bool loading = getIsCloud();
+    bool loading = rez_status == 0;
     if (mFirstFullyVisible && !mIsControlAvatar)
     {
         loading = ((rez_status < 2)
@@ -8251,6 +8315,27 @@ BOOL LLVOAvatar::updateIsFullyLoaded()
                    || (rez_status < 3 && !isFullyBaked())
                    || hasPendingAttachedMeshes()
                   );
+
+        // compare amount of attachments to one reported by simulator
+        if (!loading && !isSelf() && rez_status < 4 && mLastCloudAttachmentCount < mSimAttachments.size())
+        {
+            S32 attachment_count = getAttachmentCount();
+            if (mLastCloudAttachmentCount != attachment_count)
+            {
+                mLastCloudAttachmentCount = attachment_count;
+                if (attachment_count != mSimAttachments.size())
+                {
+                    // attachment count changed, but still below desired, wait for more updates
+                    mLastCloudAttachmentChangeTime.reset();
+                    loading = true;
+                }
+            }
+            else if (mLastCloudAttachmentChangeTime.getElapsedTimeF32() < MAX_ATTACHMENT_WAIT_TIME_SEC)
+            {
+                // waiting
+                loading = true;
+            }
+        }
     }
     updateRezzedStatusTimers(rez_status);
     updateRuthTimer(loading);
@@ -8286,12 +8371,11 @@ void LLVOAvatar::updateRuthTimer(bool loading)
     }
 }
 
-BOOL LLVOAvatar::processFullyLoadedChange(bool loading)
+bool LLVOAvatar::processFullyLoadedChange(bool loading)
 {
     // We wait a little bit before giving the 'all clear', to let things to
-    // settle down (models to snap into place, textures to get first packets).
-    // And if viewer isn't aware of some parts yet, this gives them a chance
-    // to arrive.
+    // settle down: models to snap into place, textures to get first packets,
+    // LODs to load.
     const F32 LOADED_DELAY = 1.f;
 
     if (loading)
@@ -8301,11 +8385,12 @@ BOOL LLVOAvatar::processFullyLoadedChange(bool loading)
 
     if (mFirstFullyVisible)
     {
+        F32 first_use_delay = FIRST_APPEARANCE_CLOUD_MIN_DELAY;
         if (!isSelf() && loading)
         {
                 // Note that textures can causes 60s delay on thier own
                 // so this delay might end up on top of textures' delay
-                mFirstUseDelaySeconds = llclamp(
+                first_use_delay = llclamp(
                     mFirstAppearanceMessageTimer.getElapsedTimeF32(),
                     FIRST_APPEARANCE_CLOUD_MIN_DELAY,
                     FIRST_APPEARANCE_CLOUD_MAX_DELAY);
@@ -8314,10 +8399,10 @@ BOOL LLVOAvatar::processFullyLoadedChange(bool loading)
                 {
                     // Impostors are less of a priority,
                     // let them stay cloud longer
-                    mFirstUseDelaySeconds *= 1.25;
+                    first_use_delay *= FIRST_APPEARANCE_CLOUD_IMPOSTOR_MODIFIER;
                 }
         }
-        mFullyLoaded = (mFullyLoadedTimer.getElapsedTimeF32() > mFirstUseDelaySeconds);
+        mFullyLoaded = (mFullyLoadedTimer.getElapsedTimeF32() > first_use_delay);
     }
     else
     {
@@ -8326,21 +8411,21 @@ BOOL LLVOAvatar::processFullyLoadedChange(bool loading)
 
     if (!mPreviousFullyLoaded && !loading && mFullyLoaded)
     {
-        debugAvatarRezTime("AvatarRezNotification","fully loaded");
+        debugAvatarRezTime("AvatarRezNotification", "fully loaded");
     }
 
     // did our loading state "change" from last call?
     // FIXME runway - why are we updating every 30 calls even if nothing has changed?
     // This causes updateLOD() to run every 30 frames, among other things.
     const S32 UPDATE_RATE = 30;
-    BOOL changed =
+    bool changed =
         ((mFullyLoaded != mPreviousFullyLoaded) ||         // if the value is different from the previous call
          (!mFullyLoadedInitialized) ||                     // if we've never been called before
          (mFullyLoadedFrameCounter % UPDATE_RATE == 0));   // every now and then issue a change
-    BOOL fully_loaded_changed = (mFullyLoaded != mPreviousFullyLoaded);
+    bool fully_loaded_changed = (mFullyLoaded != mPreviousFullyLoaded);
 
     mPreviousFullyLoaded = mFullyLoaded;
-    mFullyLoadedInitialized = TRUE;
+    mFullyLoadedInitialized = true;
     mFullyLoadedFrameCounter++;
 
     if (changed && isSelf())
@@ -8352,13 +8437,13 @@ BOOL LLVOAvatar::processFullyLoadedChange(bool loading)
     if (fully_loaded_changed && !isSelf() && mFullyLoaded && isImpostor())
     {
         // Fix for jellydoll initially invisible
-        mNeedsImpostorUpdate = TRUE;
+        mNeedsImpostorUpdate = true;
         mLastImpostorUpdateReason = 6;
     }
     return changed;
 }
 
-BOOL LLVOAvatar::isFullyLoaded() const
+bool LLVOAvatar::isFullyLoaded() const
 {
     return (mRenderUnloadedAvatar || mFullyLoaded);
 }
@@ -8366,13 +8451,17 @@ BOOL LLVOAvatar::isFullyLoaded() const
 bool LLVOAvatar::isTooComplex() const
 {
     bool too_complex;
-    static LLCachedControl<bool> always_render_friends(gSavedSettings, "AlwaysRenderFriends");
-    bool render_friend =  (LLAvatarTracker::instance().isBuddy(getID()) && always_render_friends);
+    static LLCachedControl<S32> compelxity_render_mode(gSavedSettings, "RenderAvatarComplexityMode");
+    bool render_friend =  (LLAvatarTracker::instance().isBuddy(getID()) && compelxity_render_mode > AV_RENDER_LIMIT_BY_COMPLEXITY);
 
     if (isSelf() || render_friend || mVisuallyMuteSetting == AV_ALWAYS_RENDER)
     {
         too_complex = false;
     }
+    else if (compelxity_render_mode == AV_RENDER_ONLY_SHOW_FRIENDS && !mIsControlAvatar)
+    {
+        too_complex = true;
+    }
     else
     {
         // Determine if visually muted or not
@@ -8392,13 +8481,29 @@ bool LLVOAvatar::isTooComplex() const
 
 bool LLVOAvatar::isTooSlow() const
 {
-    static LLCachedControl<bool> always_render_friends(gSavedSettings, "AlwaysRenderFriends");
-    bool render_friend =  (LLAvatarTracker::instance().isBuddy(getID()) && always_render_friends);
+    if (mIsControlAvatar)
+    {
+        return mTooSlow;
+    }
+
+    static LLCachedControl<S32> compelxity_render_mode(gSavedSettings, "RenderAvatarComplexityMode");
+    static LLCachedControl<bool> friends_only(gSavedSettings, "RenderAvatarFriendsOnly", false);
+    bool is_friend = LLAvatarTracker::instance().isBuddy(getID());
+    bool render_friend = is_friend && compelxity_render_mode > AV_RENDER_LIMIT_BY_COMPLEXITY;
 
     if (render_friend || mVisuallyMuteSetting == AV_ALWAYS_RENDER)
     {
         return false;
     }
+    else if (compelxity_render_mode == AV_RENDER_ONLY_SHOW_FRIENDS)
+    {
+        return true;
+    }
+    else if (!is_friend && friends_only())
+    {
+        return true;
+    }
+
     return mTooSlow;
 }
 
@@ -8406,7 +8511,7 @@ bool LLVOAvatar::isTooSlow() const
 void LLVOAvatar::updateTooSlow()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_AVATAR;
-    static LLCachedControl<bool> alwaysRenderFriends(gSavedSettings, "AlwaysRenderFriends");
+    static LLCachedControl<S32> compelxity_render_mode(gSavedSettings, "RenderAvatarComplexityMode");
     static LLCachedControl<bool> allowSelfImpostor(gSavedSettings, "AllowSelfImpostor");
     const auto id = getID();
 
@@ -8439,12 +8544,14 @@ void LLVOAvatar::updateTooSlow()
 
         if(!mTooSlowWithoutShadows) // if we were not previously above the full impostor cap
         {
-            bool render_friend_or_exception =   ( alwaysRenderFriends && LLAvatarTracker::instance().isBuddy( id ) ) ||
+            bool always_render_friends = compelxity_render_mode > AV_RENDER_LIMIT_BY_COMPLEXITY;
+            bool render_friend_or_exception =   (always_render_friends && LLAvatarTracker::instance().isBuddy( id ) ) ||
                 ( getVisualMuteSettings() == LLVOAvatar::AV_ALWAYS_RENDER );
-            if( (!isSelf() || allowSelfImpostor) && !render_friend_or_exception  )
+            if( (!isSelf() || allowSelfImpostor) && !render_friend_or_exception)
             {
                 // Note: slow rendering Friends still get their shadows zapped.
-                mTooSlowWithoutShadows = getGPURenderTime()*2.f >= max_art_ms;  // NOTE: assumes shadow rendering doubles render time
+                mTooSlowWithoutShadows = (getGPURenderTime()*2.f >= max_art_ms)  // NOTE: assumes shadow rendering doubles render time
+                    || (compelxity_render_mode == AV_RENDER_ONLY_SHOW_FRIENDS && !mIsControlAvatar);
             }
         }
     }
@@ -8576,35 +8683,35 @@ void LLVOAvatar::updateMeshVisibility()
         LLAvatarJoint* joint = mMeshLOD[i];
         if (i == MESH_ID_HAIR)
         {
-            joint->setVisible(!bake_flag[BAKED_HAIR], TRUE);
+            joint->setVisible(!bake_flag[BAKED_HAIR], true);
         }
         else if (i == MESH_ID_HEAD)
         {
-            joint->setVisible(!bake_flag[BAKED_HEAD], TRUE);
+            joint->setVisible(!bake_flag[BAKED_HEAD], true);
         }
         else if (i == MESH_ID_SKIRT)
         {
-            joint->setVisible(!bake_flag[BAKED_SKIRT], TRUE);
+            joint->setVisible(!bake_flag[BAKED_SKIRT], true);
         }
         else if (i == MESH_ID_UPPER_BODY)
         {
-            joint->setVisible(!bake_flag[BAKED_UPPER], TRUE);
+            joint->setVisible(!bake_flag[BAKED_UPPER], true);
         }
         else if (i == MESH_ID_LOWER_BODY)
         {
-            joint->setVisible(!bake_flag[BAKED_LOWER], TRUE);
+            joint->setVisible(!bake_flag[BAKED_LOWER], true);
         }
         else if (i == MESH_ID_EYEBALL_LEFT)
         {
-            joint->setVisible(!bake_flag[BAKED_EYES], TRUE);
+            joint->setVisible(!bake_flag[BAKED_EYES], true);
         }
         else if (i == MESH_ID_EYEBALL_RIGHT)
         {
-            joint->setVisible(!bake_flag[BAKED_EYES], TRUE);
+            joint->setVisible(!bake_flag[BAKED_EYES], true);
         }
         else if (i == MESH_ID_EYELASH)
         {
-            joint->setVisible(!bake_flag[BAKED_HEAD], TRUE);
+            joint->setVisible(!bake_flag[BAKED_HEAD], true);
         }
     }
 }
@@ -8632,19 +8739,19 @@ void LLVOAvatar::updateMeshTextures()
         }
     }
 
-    const BOOL other_culled = !isSelf() && mCulled;
+    const bool other_culled = !isSelf() && mCulled;
     LLLoadedCallbackEntry::source_callback_list_t* src_callback_list = NULL ;
-    BOOL paused = FALSE;
+    bool paused = false;
     if(!isSelf())
     {
         src_callback_list = &mCallbackTextureList ;
         paused = !isVisible();
     }
 
-    std::vector<BOOL> is_layer_baked;
+    std::vector<bool> is_layer_baked;
     is_layer_baked.resize(mBakedTextureDatas.size(), false);
 
-    std::vector<BOOL> use_lkg_baked_layer; // lkg = "last known good"
+    std::vector<bool> use_lkg_baked_layer; // lkg = "last known good"
     use_lkg_baked_layer.resize(mBakedTextureDatas.size(), false);
 
     mBakedTextureDebugText += llformat("%06d\n",update_counter++);
@@ -8667,7 +8774,7 @@ void LLVOAvatar::updateMeshTextures()
                                       && layerset_invalid);
             if (use_lkg_baked_layer[i])
             {
-                layerset->setUpdatesEnabled(TRUE);
+                layerset->setUpdatesEnabled(true);
             }
         }
         else
@@ -8707,7 +8814,7 @@ void LLVOAvatar::updateMeshTextures()
         {
             // use last known good layer (no new one)
             LLViewerFetchedTexture* baked_img = LLViewerTextureManager::getFetchedTexture(mBakedTextureDatas[i].mLastTextureID);
-            mBakedTextureDatas[i].mIsUsed = TRUE;
+            mBakedTextureDatas[i].mIsUsed = true;
 
             debugColorizeSubMeshes(i,LLColor4::red);
 
@@ -8727,7 +8834,7 @@ void LLVOAvatar::updateMeshTextures()
             // use new layer
             LLViewerFetchedTexture* baked_img =
                 LLViewerTextureManager::staticCastToFetchedTexture(
-                    getImage( mBakedTextureDatas[i].mTextureIndex, 0 ), TRUE) ;
+                    getImage( mBakedTextureDatas[i].mTextureIndex, 0 ), true) ;
             if( baked_img->getID() == mBakedTextureDatas[i].mLastTextureID )
             {
                 // Even though the file may not be finished loading,
@@ -8739,14 +8846,14 @@ void LLVOAvatar::updateMeshTextures()
             }
             else
             {
-                mBakedTextureDatas[i].mIsLoaded = FALSE;
+                mBakedTextureDatas[i].mIsLoaded = false;
                 if ( (baked_img->getID() != IMG_INVISIBLE) &&
                      ((i == BAKED_HEAD) || (i == BAKED_UPPER) || (i == BAKED_LOWER)) )
                 {
-                    baked_img->setLoadedCallback(onBakedTextureMasksLoaded, MORPH_MASK_REQUESTED_DISCARD, TRUE, TRUE, new LLTextureMaskData( mID ),
+                    baked_img->setLoadedCallback(onBakedTextureMasksLoaded, MORPH_MASK_REQUESTED_DISCARD, true, true, new LLTextureMaskData( mID ),
                         src_callback_list, paused);
                 }
-                baked_img->setLoadedCallback(onBakedTextureLoaded, SWITCH_TO_BAKED_DISCARD, FALSE, FALSE, new LLUUID( mID ),
+                baked_img->setLoadedCallback(onBakedTextureLoaded, SWITCH_TO_BAKED_DISCARD, false, false, new LLUUID( mID ),
                     src_callback_list, paused );
                 if (baked_img->getDiscardLevel() < 0 && !paused)
                 {
@@ -8764,8 +8871,8 @@ void LLVOAvatar::updateMeshTextures()
             debugColorizeSubMeshes(i,LLColor4::yellow );
 
             layerset->createComposite();
-            layerset->setUpdatesEnabled( TRUE );
-            mBakedTextureDatas[i].mIsUsed = FALSE;
+            layerset->setUpdatesEnabled( true );
+            mBakedTextureDatas[i].mIsUsed = false;
 
             avatar_joint_mesh_list_t::iterator iter = mBakedTextureDatas[i].mJointMeshes.begin();
             avatar_joint_mesh_list_t::iterator end  = mBakedTextureDatas[i].mJointMeshes.end();
@@ -8818,7 +8925,7 @@ void LLVOAvatar::updateMeshTextures()
              ++local_tex_iter)
         {
             const ETextureIndex texture_index = *local_tex_iter;
-            const BOOL is_baked_ready = (is_layer_baked[baked_index] && mBakedTextureDatas[baked_index].mIsLoaded) || other_culled;
+            const bool is_baked_ready = (is_layer_baked[baked_index] && mBakedTextureDatas[baked_index].mIsLoaded) || other_culled;
             if (isSelf())
             {
                 setBakedReady(texture_index, is_baked_ready);
@@ -8873,14 +8980,14 @@ void LLVOAvatar::updateMeshTextures()
 //-----------------------------------------------------------------------------
 // setLocalTexture()
 //-----------------------------------------------------------------------------
-void LLVOAvatar::setLocalTexture( ETextureIndex type, LLViewerTexture* in_tex, BOOL baked_version_ready, U32 index )
+void LLVOAvatar::setLocalTexture( ETextureIndex type, LLViewerTexture* in_tex, bool baked_version_ready, U32 index )
 {
     // invalid for anyone but self
     llassert(0);
 }
 
 //virtual
-void LLVOAvatar::setBakedReady(LLAvatarAppearanceDefines::ETextureIndex type, BOOL baked_version_exists, U32 index)
+void LLVOAvatar::setBakedReady(LLAvatarAppearanceDefines::ETextureIndex type, bool baked_version_exists, U32 index)
 {
     // invalid for anyone but self
     llassert(0);
@@ -8892,7 +8999,7 @@ void LLVOAvatar::addChat(const LLChat& chat)
 
     mChats.push_back(chat);
 
-    S32 chat_length = 0;
+    size_t chat_length = 0;
     for( chat_iter = mChats.begin(); chat_iter != mChats.end(); ++chat_iter)
     {
         chat_length += chat_iter->mText.size();
@@ -8916,7 +9023,7 @@ void LLVOAvatar::clearChat()
 }
 
 
-void LLVOAvatar::applyMorphMask(U8* tex_data, S32 width, S32 height, S32 num_components, LLAvatarAppearanceDefines::EBakedTextureIndex index)
+void LLVOAvatar::applyMorphMask(const U8* tex_data, S32 width, S32 height, S32 num_components, LLAvatarAppearanceDefines::EBakedTextureIndex index)
 {
     if (index >= BAKED_NUM_INDICES)
     {
@@ -8936,12 +9043,12 @@ void LLVOAvatar::applyMorphMask(U8* tex_data, S32 width, S32 height, S32 num_com
     }
 }
 
-// returns TRUE if morph masks are present and not valid for a given baked texture, FALSE otherwise
-BOOL LLVOAvatar::morphMaskNeedsUpdate(LLAvatarAppearanceDefines::EBakedTextureIndex index)
+// returns true if morph masks are present and not valid for a given baked texture, false otherwise
+bool LLVOAvatar::morphMaskNeedsUpdate(LLAvatarAppearanceDefines::EBakedTextureIndex index)
 {
     if (index >= BAKED_NUM_INDICES)
     {
-        return FALSE;
+        return false;
     }
 
     if (!mBakedTextureDatas[index].mMaskedMorphs.empty())
@@ -8956,11 +9063,11 @@ BOOL LLVOAvatar::morphMaskNeedsUpdate(LLAvatarAppearanceDefines::EBakedTextureIn
         }
         else
         {
-            return FALSE;
+            return false;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
@@ -9055,7 +9162,7 @@ void LLVOAvatar::clampAttachmentPositions()
     }
 }
 
-BOOL LLVOAvatar::hasHUDAttachment() const
+bool LLVOAvatar::hasHUDAttachment() const
 {
     for (attachment_map_t::const_iterator iter = mAttachmentPoints.begin();
          iter != mAttachmentPoints.end();
@@ -9064,10 +9171,10 @@ BOOL LLVOAvatar::hasHUDAttachment() const
         LLViewerJointAttachment* attachment = iter->second;
         if (attachment->getIsHUDAttachment() && attachment->getNumObjects() > 0)
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 LLBBox LLVOAvatar::getHUDBBox() const
@@ -9117,10 +9224,10 @@ void LLVOAvatar::onFirstTEMessageReceived()
     LL_DEBUGS("Avatar") << avString() << LL_ENDL;
     if( !mFirstTEMessageReceived )
     {
-        mFirstTEMessageReceived = TRUE;
+        mFirstTEMessageReceived = true;
 
         LLLoadedCallbackEntry::source_callback_list_t* src_callback_list = NULL ;
-        BOOL paused = FALSE ;
+        bool paused = false ;
         if(!isSelf())
         {
             src_callback_list = &mCallbackTextureList ;
@@ -9129,22 +9236,22 @@ void LLVOAvatar::onFirstTEMessageReceived()
 
         for (U32 i = 0; i < mBakedTextureDatas.size(); i++)
         {
-            const BOOL layer_baked = isTextureDefined(mBakedTextureDatas[i].mTextureIndex);
+            const bool layer_baked = isTextureDefined(mBakedTextureDatas[i].mTextureIndex);
 
             // Use any baked textures that we have even if they haven't downloaded yet.
             // (That is, don't do a transition from unbaked to baked.)
             if (layer_baked)
             {
-                LLViewerFetchedTexture* image = LLViewerTextureManager::staticCastToFetchedTexture(getImage( mBakedTextureDatas[i].mTextureIndex, 0 ), TRUE) ;
+                LLViewerFetchedTexture* image = LLViewerTextureManager::staticCastToFetchedTexture(getImage( mBakedTextureDatas[i].mTextureIndex, 0 ), true) ;
                 mBakedTextureDatas[i].mLastTextureID = image->getID();
                 // If we have more than one texture for the other baked layers, we'll want to call this for them too.
                 if ( (image->getID() != IMG_INVISIBLE) && ((i == BAKED_HEAD) || (i == BAKED_UPPER) || (i == BAKED_LOWER)) )
                 {
-                    image->setLoadedCallback( onBakedTextureMasksLoaded, MORPH_MASK_REQUESTED_DISCARD, TRUE, TRUE, new LLTextureMaskData( mID ),
+                    image->setLoadedCallback( onBakedTextureMasksLoaded, MORPH_MASK_REQUESTED_DISCARD, true, true, new LLTextureMaskData( mID ),
                         src_callback_list, paused);
                 }
                 LL_DEBUGS("Avatar") << avString() << "layer_baked, setting onInitialBakedTextureLoaded as callback" << LL_ENDL;
-                image->setLoadedCallback( onInitialBakedTextureLoaded, MAX_DISCARD_LEVEL, FALSE, FALSE, new LLUUID( mID ),
+                image->setLoadedCallback( onInitialBakedTextureLoaded, MAX_DISCARD_LEVEL, false, false, new LLUUID( mID ),
                     src_callback_list, paused );
                 if (image->getDiscardLevel() < 0 && !paused)
                 {
@@ -9155,7 +9262,7 @@ void LLVOAvatar::onFirstTEMessageReceived()
             }
         }
 
-        mMeshTexturesDirty = TRUE;
+        mMeshTexturesDirty = true;
         gPipeline.markGLRebuild(this);
 
         mFirstAppearanceMessageTimer.reset();
@@ -9291,7 +9398,7 @@ void LLVOAvatar::parseAppearanceMessage(LLMessageSystem* mesgsys, LLAppearanceMe
         //mesgsys->getU32Fast(_PREHASH_AppearanceData, _PREHASH_Flags, appearance_flags, 0);
     }
 
-    // Parse the AppearanceData field, if any.
+    // Parse the AppearanceHover field, if any.
     contents.mHoverOffsetWasSet = false;
     if (mesgsys->has(_PREHASH_AppearanceHover))
     {
@@ -9302,6 +9409,46 @@ void LLVOAvatar::parseAppearanceMessage(LLMessageSystem* mesgsys, LLAppearanceMe
         contents.mHoverOffsetWasSet = true;
     }
 
+    // Get attachment info, if sent
+    LLUUID attachment_id;
+    U8     attach_point;
+    S32    attach_count = mesgsys->getNumberOfBlocksFast(_PREHASH_AttachmentBlock);
+    LL_DEBUGS("AVAppearanceAttachments") << "Agent " << getID() << " has "
+                                         << attach_count << " attachments" << LL_ENDL;
+    size_t old_size = mSimAttachments.size();
+    mSimAttachments.clear();
+    for (S32 attach_i = 0; attach_i < attach_count; attach_i++)
+    {
+        mesgsys->getUUIDFast(_PREHASH_AttachmentBlock, _PREHASH_ID, attachment_id, attach_i);
+        mesgsys->getU8Fast(_PREHASH_AttachmentBlock, _PREHASH_AttachmentPoint, attach_point, attach_i);
+        LL_DEBUGS("AVAppearanceAttachments") << "AV " << getID() << " has attachment " << attach_i << " "
+            << (attachment_id.isNull() ? "pending" : attachment_id.asString())
+            << " on point " << (S32)attach_point << LL_ENDL;
+
+        if (attachment_id.notNull())
+        {
+            mSimAttachments[attachment_id] = attach_point;
+        }
+        else
+        {
+            // at the moment viewer is only interested in non-null attachments
+            LL_DEBUGS("AVAppearanceAttachments") << "AV " << getID()
+                << " has null attachment on point " << (S32)attach_point
+                << ", discarding" << LL_ENDL;
+        }
+    }
+
+    // todo? Doesn't detect if attachments were switched
+    if (old_size != mSimAttachments.size())
+    {
+        mLastCloudAttachmentCount = 0;
+        mLastCloudAttachmentChangeTime.reset();
+        if (!isFullyLoaded())
+        {
+            mFullyLoadedTimer.reset();
+        }
+    }
+
     // Parse visual params, if any.
     S32 num_blocks = mesgsys->getNumberOfBlocksFast(_PREHASH_VisualParam);
     if( num_blocks > 1)
@@ -9464,7 +9611,7 @@ void LLVOAvatar::processAvatarAppearance( LLMessageSystem* mesgsys )
     }
 
     // SUNSHINE CLEANUP - is this case OK now?
-    S32 num_params = contents->mParamWeights.size();
+    auto num_params = contents->mParamWeights.size();
     if (num_params <= 1)
     {
         // In this case, we have no reliable basis for knowing
@@ -9508,7 +9655,7 @@ void LLVOAvatar::processAvatarAppearance( LLMessageSystem* mesgsys )
 
 void LLVOAvatar::applyParsedAppearanceMessage(LLAppearanceMessageContents& contents, bool slam_params)
 {
-    S32 num_params = contents.mParamWeights.size();
+    auto num_params = contents.mParamWeights.size();
     ESex old_sex = getSex();
 
     if (applyParsedTEMessage(contents.mTEContents) > 0 && isChanged(TEXTURE))
@@ -9525,7 +9672,7 @@ void LLVOAvatar::applyParsedAppearanceMessage(LLAppearanceMessageContents& conte
         {
             LL_DEBUGS("Avatar") << avString() << " baked_index " << (S32) baked_index << " using mLastTextureID " << mBakedTextureDatas[baked_index].mLastTextureID << LL_ENDL;
             setTEImage(mBakedTextureDatas[baked_index].mTextureIndex,
-                LLViewerTextureManager::getFetchedTexture(mBakedTextureDatas[baked_index].mLastTextureID, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE));
+                LLViewerTextureManager::getFetchedTexture(mBakedTextureDatas[baked_index].mLastTextureID, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE));
         }
         else
         {
@@ -9537,8 +9684,8 @@ void LLVOAvatar::applyParsedAppearanceMessage(LLAppearanceMessageContents& conte
     // runway - was
     // if (!is_first_appearance_message )
     // which means it would be called on second appearance message - probably wrong.
-    BOOL is_first_appearance_message = !mFirstAppearanceMessageReceived;
-    mFirstAppearanceMessageReceived = TRUE;
+    bool is_first_appearance_message = !mFirstAppearanceMessageReceived;
+    mFirstAppearanceMessageReceived = true;
 
     //LL_DEBUGS("Avatar") << avString() << "processAvatarAppearance start " << mID
     //                    << " first? " << is_first_appearance_message << " self? " << isSelf() << LL_ENDL;
@@ -9548,25 +9695,25 @@ void LLVOAvatar::applyParsedAppearanceMessage(LLAppearanceMessageContents& conte
         onFirstTEMessageReceived();
     }
 
-    setCompositeUpdatesEnabled( FALSE );
+    setCompositeUpdatesEnabled( false );
     gPipeline.markGLRebuild(this);
 
     // Apply visual params
     if( num_params > 1)
     {
         //LL_DEBUGS("Avatar") << avString() << " handle visual params, num_params " << num_params << LL_ENDL;
-        BOOL params_changed = FALSE;
-        BOOL interp_params = FALSE;
+        bool params_changed = false;
+        bool interp_params = false;
         S32 params_changed_count = 0;
 
-        for( S32 i = 0; i < num_params; i++ )
+        for( size_t i = 0; i < num_params; i++ )
         {
             LLVisualParam* param = contents.mParams[i];
             F32 newWeight = contents.mParamWeights[i];
 
             if (slam_params || is_first_appearance_message || (param->getWeight() != newWeight))
             {
-                params_changed = TRUE;
+                params_changed = true;
                 params_changed_count++;
 
                 if(is_first_appearance_message || slam_params)
@@ -9576,7 +9723,7 @@ void LLVOAvatar::applyParsedAppearanceMessage(LLAppearanceMessageContents& conte
                 }
                 else
                 {
-                    interp_params = TRUE;
+                    interp_params = true;
                     param->setAnimationTarget(newWeight);
                 }
             }
@@ -9643,7 +9790,7 @@ void LLVOAvatar::applyParsedAppearanceMessage(LLAppearanceMessageContents& conte
         setHoverOffset(LLVector3(0.0, 0.0, 0.0));
     }
 
-    setCompositeUpdatesEnabled( TRUE );
+    setCompositeUpdatesEnabled( true );
 
     // If all of the avatars are completely baked, release the global image caches to conserve memory.
     LLVOAvatar::cullAvatarsByPixelArea();
@@ -9665,7 +9812,7 @@ LLViewerTexture* LLVOAvatar::getBakedTexture(const U8 te)
         return NULL;
     }
 
-    BOOL is_layer_baked = isTextureDefined(mBakedTextureDatas[te].mTextureIndex);
+    bool is_layer_baked = isTextureDefined(mBakedTextureDatas[te].mTextureIndex);
 
     LLViewerTexLayerSet* layerset = NULL;
     layerset = getTexLayerSet(te);
@@ -9673,13 +9820,13 @@ LLViewerTexture* LLVOAvatar::getBakedTexture(const U8 te)
 
     if (!isEditingAppearance() && is_layer_baked)
     {
-        LLViewerFetchedTexture* baked_img = LLViewerTextureManager::staticCastToFetchedTexture(getImage(mBakedTextureDatas[te].mTextureIndex, 0), TRUE);
+        LLViewerFetchedTexture* baked_img = LLViewerTextureManager::staticCastToFetchedTexture(getImage(mBakedTextureDatas[te].mTextureIndex, 0), true);
         return baked_img;
     }
     else if (layerset && isEditingAppearance())
     {
         layerset->createComposite();
-        layerset->setUpdatesEnabled(TRUE);
+        layerset->setUpdatesEnabled(true);
 
         return layerset->getViewerComposite();
     }
@@ -9767,7 +9914,7 @@ void LLVOAvatar::getAnimNames( std::vector<std::string>* names )
 }
 
 // static
-void LLVOAvatar::onBakedTextureMasksLoaded( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata )
+void LLVOAvatar::onBakedTextureMasksLoaded( bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata )
 {
     if (!userdata) return;
 
@@ -9783,6 +9930,8 @@ void LLVOAvatar::onBakedTextureMasksLoaded( BOOL success, LLViewerFetchedTexture
     {
         if(aux_src && aux_src->getComponents() == 1)
         {
+            LLImageDataSharedLock lock(aux_src);
+
             if (!aux_src->getData())
             {
                 LL_ERRS() << "No auxiliary source (morph mask) data for image id " << id << LL_ENDL;
@@ -9809,7 +9958,7 @@ void LLVOAvatar::onBakedTextureMasksLoaded( BOOL success, LLViewerFetchedTexture
                      //LL_INFOS() << "onBakedTextureMasksLoaded for head " << id << " discard = " << discard_level << LL_ENDL;
                      self->mBakedTextureDatas[BAKED_HEAD].mTexLayerSet->applyMorphMask(aux_src->getData(), aux_src->getWidth(), aux_src->getHeight(), 1);
                      maskData->mLastDiscardLevel = discard_level; */
-            BOOL found_texture_id = false;
+            bool found_texture_id = false;
             for (LLAvatarAppearanceDictionary::Textures::const_iterator iter = LLAvatarAppearance::getDictionary()->getTextures().begin();
                  iter != LLAvatarAppearance::getDictionary()->getTextures().end();
                  ++iter)
@@ -9856,7 +10005,7 @@ void LLVOAvatar::onBakedTextureMasksLoaded( BOOL success, LLViewerFetchedTexture
 }
 
 // static
-void LLVOAvatar::onInitialBakedTextureLoaded( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata )
+void LLVOAvatar::onInitialBakedTextureLoaded( bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata )
 {
     LLUUID *avatar_idp = (LLUUID *)userdata;
     LLVOAvatar *selfp = (LLVOAvatar *)gObjectList.findObject(*avatar_idp);
@@ -9877,9 +10026,9 @@ void LLVOAvatar::onInitialBakedTextureLoaded( BOOL success, LLViewerFetchedTextu
 }
 
 // Static
-void LLVOAvatar::onBakedTextureLoaded(BOOL success,
+void LLVOAvatar::onBakedTextureLoaded(bool success,
                                       LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src,
-                                      S32 discard_level, BOOL final, void* userdata)
+                                      S32 discard_level, bool final, void* userdata)
 {
     //LL_DEBUGS("Avatar") << "onBakedTextureLoaded: " << src_vi->getID() << LL_ENDL;
 
@@ -9947,7 +10096,7 @@ void LLVOAvatar::useBakedTexture( const LLUUID& id )
                  local_tex_iter != baked_dict->mLocalTextures.end();
                  ++local_tex_iter)
             {
-                if (isSelf()) setBakedReady(*local_tex_iter, TRUE);
+                if (isSelf()) setBakedReady(*local_tex_iter, true);
             }
 
             // ! BACKWARDS COMPATIBILITY !
@@ -10308,7 +10457,7 @@ S32 LLVOAvatar::getUnbakedPixelAreaRank()
 
 struct CompareScreenAreaGreater
 {
-    BOOL operator()(const LLCharacter* const& lhs, const LLCharacter* const& rhs)
+    bool operator()(const LLCharacter* const& lhs, const LLCharacter* const& rhs)
     {
         return lhs->getPixelArea() > rhs->getPixelArea();
     }
@@ -10325,14 +10474,14 @@ void LLVOAvatar::cullAvatarsByPixelArea()
          iter != LLCharacter::sInstances.end(); ++iter)
     {
         LLVOAvatar* inst = (LLVOAvatar*) *iter;
-        BOOL culled;
+        bool culled;
         if (inst->isSelf() || inst->isFullyBaked())
         {
-            culled = FALSE;
+            culled = false;
         }
         else
         {
-            culled = TRUE;
+            culled = true;
         }
 
         if (inst->mCulled != culled)
@@ -10376,7 +10525,7 @@ void LLVOAvatar::startAppearanceAnimation()
 {
     if(!mAppearanceAnimating)
     {
-        mAppearanceAnimating = TRUE;
+        mAppearanceAnimating = true;
         mAppearanceMorphTimer.reset();
         mLastAppearanceBlendTime = 0.f;
     }
@@ -10421,19 +10570,19 @@ LLHost LLVOAvatar::getObjectHost() const
     }
 }
 
-BOOL LLVOAvatar::updateLOD()
+bool LLVOAvatar::updateLOD()
 {
     if (mDrawable.isNull())
     {
-        return FALSE;
+        return false;
     }
 
     if (!LLPipeline::sImpostorRender && isImpostor() && 0 != mDrawable->getNumFaces() && mDrawable->getFace(0)->hasGeometry())
     {
-        return TRUE;
+        return true;
     }
 
-    BOOL res = updateJointLODs();
+    bool res = updateJointLODs();
 
     LLFace* facep = mDrawable->getFace(0);
     if (!facep || !facep->getVertexBuffer())
@@ -10445,7 +10594,7 @@ BOOL LLVOAvatar::updateLOD()
     {   //LOD changed or new mesh created, allocate new vertex buffer if needed
         updateMeshData();
         mDirtyMesh = 0;
-        mNeedsSkin = TRUE;
+        mNeedsSkin = true;
         mDrawable->clearState(LLDrawable::REBUILD_GEOMETRY);
     }
     updateVisibility();
@@ -10622,16 +10771,16 @@ void LLVOAvatar::updateImpostors()
         }
     }
 
-    LLCharacter::sAllowInstancesChange = TRUE;
+    LLCharacter::sAllowInstancesChange = true;
 }
 
 // virtual
-BOOL LLVOAvatar::isImpostor()
+bool LLVOAvatar::isImpostor()
 {
     return isVisuallyMuted() || (sLimitNonImpostors && (mUpdatePeriod > 1));
 }
 
-BOOL LLVOAvatar::shouldImpostor(const F32 rank_factor)
+bool LLVOAvatar::shouldImpostor(const F32 rank_factor)
 {
     if (isSelf())
     {
@@ -10644,7 +10793,7 @@ BOOL LLVOAvatar::shouldImpostor(const F32 rank_factor)
     return sLimitNonImpostors && (mVisibilityRank > sMaxNonImpostors * rank_factor);
 }
 
-BOOL LLVOAvatar::needsImpostorUpdate() const
+bool LLVOAvatar::needsImpostorUpdate() const
 {
     return mNeedsImpostorUpdate;
 }
@@ -10970,7 +11119,7 @@ void LLVOAvatar::accountRenderComplexityForObject(
         const LLVOVolume* volume = attached_object->mDrawable->getVOVolume();
         if (volume)
         {
-            BOOL is_rigged_mesh = volume->isRiggedMeshFast();
+            bool is_rigged_mesh = volume->isRiggedMeshFast();
             LLHUDComplexity hud_object_complexity;
             hud_object_complexity.objectName = attached_object->getAttachmentItemName();
             hud_object_complexity.objectId = attached_object->getAttachmentItemID();
@@ -11006,7 +11155,7 @@ void LLVOAvatar::accountRenderComplexityForObject(
                 attached_object->mRiggedAttachedWarned = true;
             }
 
-            hud_object_complexity.texturesCount += textures.size();
+            hud_object_complexity.texturesCount += static_cast<U32>(textures.size());
 
             for (LLVOVolume::texture_cost_t::iterator volume_texture = textures.begin();
                 volume_texture != textures.end();
@@ -11167,7 +11316,7 @@ void LLVOAvatar::calculateUpdateRenderComplexity()
 void LLVOAvatar::setVisualMuteSettings(VisualMuteSettings set)
 {
     mVisuallyMuteSetting = set;
-    mNeedsImpostorUpdate = TRUE;
+    mNeedsImpostorUpdate = true;
     mLastImpostorUpdateReason = 7;
 
     LLRenderMuteList::getInstance()->saveVisualMuteSetting(getID(), S32(set));
@@ -11180,7 +11329,10 @@ void LLVOAvatar::setOverallAppearanceNormal()
         return;
 
     LLVector3 pelvis_pos = getJoint("mPelvis")->getPosition();
-    resetSkeleton(false);
+    if (isControlAvatar() || mLastProcessedAppearance)
+    {
+        resetSkeleton(false);
+    }
     getJoint("mPelvis")->setPosition(pelvis_pos);
 
     for (auto it = mJellyAnims.begin(); it !=  mJellyAnims.end(); ++it)
@@ -11210,7 +11362,7 @@ void LLVOAvatar::setOverallAppearanceJellyDoll()
               ++anim_it)
         {
             {
-                stopMotion(anim_it->first, TRUE);
+                stopMotion(anim_it->first, true);
             }
         }
     }
@@ -11249,7 +11401,7 @@ void LLVOAvatar::updateOverallAppearance()
         mOverallAppearance = new_overall;
         if (!isSelf())
         {
-            mNeedsImpostorUpdate = TRUE;
+            mNeedsImpostorUpdate = true;
             mLastImpostorUpdateReason = 8;
         }
         updateMeshVisibility();
@@ -11289,7 +11441,7 @@ void LLVOAvatar::updateOverallAppearanceAnimations()
                 if (!is_playing)
                 {
                     // Anim was not requested for this av by sim, but may be playing locally
-                    stopMotion(*it, TRUE);
+                    stopMotion(*it, true);
                 }
             }
             mJellyAnims.clear();
@@ -11400,7 +11552,7 @@ void LLVOAvatar::calcMutedAVColor()
 }
 
 // static
-BOOL LLVOAvatar::isIndexLocalTexture(ETextureIndex index)
+bool LLVOAvatar::isIndexLocalTexture(ETextureIndex index)
 {
     return (index < 0 || index >= TEX_NUM_INDICES)
         ? false
@@ -11408,7 +11560,7 @@ BOOL LLVOAvatar::isIndexLocalTexture(ETextureIndex index)
 }
 
 // static
-BOOL LLVOAvatar::isIndexBakedTexture(ETextureIndex index)
+bool LLVOAvatar::isIndexBakedTexture(ETextureIndex index)
 {
     return (index < 0 || index >= TEX_NUM_INDICES)
         ? false
@@ -11456,44 +11608,42 @@ F32 calc_bouncy_animation(F32 x)
 }
 
 //virtual
-BOOL LLVOAvatar::isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex te, U32 index ) const
+bool LLVOAvatar::isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex te, U32 index ) const
 {
     if (isIndexLocalTexture(te))
     {
-        return FALSE;
+        return false;
     }
 
-    if( !getImage( te, index ) )
+    LLViewerTexture* tex = getImage(te, index);
+    if (!tex)
     {
         LL_WARNS() << "getImage( " << te << ", " << index << " ) returned 0" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
-    return (getImage(te, index)->getID() != IMG_DEFAULT_AVATAR &&
-            getImage(te, index)->getID() != IMG_DEFAULT);
+    return (tex->getID() != IMG_DEFAULT_AVATAR &&
+            tex->getID() != IMG_DEFAULT);
 }
 
 //virtual
-BOOL LLVOAvatar::isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const
+bool LLVOAvatar::isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const
 {
     if (isIndexLocalTexture(type))
     {
         return isTextureDefined(type, index);
     }
-    else
-    {
-        // baked textures can use TE images directly
-        return ((isTextureDefined(type) || isSelf())
-                && (getTEImage(type)->getID() != IMG_INVISIBLE
-                || LLDrawPoolAlpha::sShowDebugAlpha));
-    }
+
+    // baked textures can use TE images directly
+    return ((isTextureDefined(type) || isSelf()) &&
+            (getTEImage(type)->getID() != IMG_INVISIBLE || LLDrawPoolAlpha::sShowDebugAlpha));
 }
 
 //virtual
-BOOL LLVOAvatar::isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerWearable *wearable) const
+bool LLVOAvatar::isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerWearable *wearable) const
 {
     // non-self avatars don't have wearables
-    return FALSE;
+    return false;
 }
 
 void LLVOAvatar::placeProfileQuery()
@@ -11617,5 +11767,8 @@ F32 LLVOAvatar::getAverageGPURenderTime()
 
     return ret;
 }
-
+bool LLVOAvatar::isBuddy() const
+{
+    return LLAvatarTracker::instance().isBuddy(getID());
+}
 
diff --git a/indra/newview/llvoavatar.h b/indra/newview/llvoavatar.h
index 1ccefa9c1e..1ca8b81553 100644
--- a/indra/newview/llvoavatar.h
+++ b/indra/newview/llvoavatar.h
@@ -133,10 +133,10 @@ public:
                                                      const EObjectUpdateType update_type,
                                                      LLDataPacker *dp);
     virtual void            idleUpdate(LLAgent &agent, const F64 &time);
-    /*virtual*/ BOOL            updateLOD();
-    BOOL                    updateJointLODs();
+    /*virtual*/ bool            updateLOD();
+    bool                    updateJointLODs();
     void                    updateLODRiggedAttachments( void );
-    /*virtual*/ BOOL            isActive() const; // Whether this object needs to do an idleUpdate.
+    /*virtual*/ bool            isActive() const; // Whether this object needs to do an idleUpdate.
     S32Bytes                totalTextureMemForUUIDS(std::set<LLUUID>& ids);
     bool                        allTexturesCompletelyDownloaded(std::set<LLUUID>& ids) const;
     bool                        allLocalTexturesCompletelyDownloaded() const;
@@ -154,18 +154,18 @@ public:
     /*virtual*/ void            onShift(const LLVector4a& shift_vector);
     /*virtual*/ U32             getPartitionType() const;
     /*virtual*/ const           LLVector3 getRenderPosition() const;
-    /*virtual*/ void            updateDrawable(BOOL force_damped);
+    /*virtual*/ void            updateDrawable(bool force_damped);
     /*virtual*/ LLDrawable*     createDrawable(LLPipeline *pipeline);
-    /*virtual*/ BOOL            updateGeometry(LLDrawable *drawable);
+    /*virtual*/ bool            updateGeometry(LLDrawable *drawable);
     /*virtual*/ void            setPixelAreaAndAngle(LLAgent &agent);
     /*virtual*/ void            updateRegion(LLViewerRegion *regionp);
     /*virtual*/ void            updateSpatialExtents(LLVector4a& newMin, LLVector4a &newMax);
     void                        calculateSpatialExtents(LLVector4a& newMin, LLVector4a& newMax);
-    /*virtual*/ BOOL            lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
+    /*virtual*/ bool            lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
                                                  S32 face = -1,                    // which face to check, -1 = ALL_SIDES
-                                                 BOOL pick_transparent = FALSE,
-                                                 BOOL pick_rigged = FALSE,
-                                                 BOOL pick_unselectable = TRUE,
+                                                 bool pick_transparent = false,
+                                                 bool pick_rigged = false,
+                                                 bool pick_unselectable = true,
                                                  S32* face_hit = NULL,             // which face was hit
                                                  LLVector4a* intersection = NULL,   // return the intersection point
                                                  LLVector2* tex_coord = NULL,      // return the texture coordinates of the intersection point
@@ -174,9 +174,9 @@ public:
     virtual LLViewerObject* lineSegmentIntersectRiggedAttachments(
                                                  const LLVector4a& start, const LLVector4a& end,
                                                  S32 face = -1,                    // which face to check, -1 = ALL_SIDES
-                                                 BOOL pick_transparent = FALSE,
-                                                 BOOL pick_rigged = FALSE,
-                                                 BOOL pick_unselectable = TRUE,
+                                                 bool pick_transparent = false,
+                                                 bool pick_rigged = false,
+                                                 bool pick_unselectable = true,
                                                  S32* face_hit = NULL,             // which face was hit
                                                  LLVector4a* intersection = NULL,   // return the intersection point
                                                  LLVector2* tex_coord = NULL,      // return the texture coordinates of the intersection point
@@ -193,8 +193,8 @@ public:
     /*virtual*/ LLVector3       getCharacterAngularVelocity();
 
     /*virtual*/ LLUUID          remapMotionID(const LLUUID& id);
-    /*virtual*/ BOOL            startMotion(const LLUUID& id, F32 time_offset = 0.f);
-    /*virtual*/ BOOL            stopMotion(const LLUUID& id, BOOL stop_immediate = FALSE);
+    /*virtual*/ bool            startMotion(const LLUUID& id, F32 time_offset = 0.f);
+    /*virtual*/ bool            stopMotion(const LLUUID& id, bool stop_immediate = false);
     virtual bool            hasMotionFromSource(const LLUUID& source_id);
     virtual void            stopMotionFromSource(const LLUUID& source_id);
     virtual void            requestStopMotion(LLMotion* motion);
@@ -254,6 +254,7 @@ public:
 
     virtual bool    isControlAvatar() const { return mIsControlAvatar; } // True if this avatar is a control av (no associated user)
     virtual bool    isUIAvatar() const { return mIsUIAvatar; } // True if this avatar is a supplemental av used in some UI views (no associated user)
+    virtual bool    isBuddy() const;
 
     // If this is an attachment, return the avatar it is attached to. Otherwise NULL.
     virtual const LLVOAvatar *getAttachedAvatar() const { return NULL; }
@@ -351,23 +352,23 @@ public:
     //--------------------------------------------------------------------
 public:
     static S32      sRenderName;
-    static BOOL     sRenderGroupTitles;
+    static bool     sRenderGroupTitles;
     static const U32 NON_IMPOSTORS_MAX_SLIDER; /* Must equal the maximum allowed the RenderAvatarMaxNonImpostors
                                                 * slider in panel_preferences_graphics1.xml */
     static U32      sMaxNonImpostors; // affected by control "RenderAvatarMaxNonImpostors"
     static bool     sLimitNonImpostors; // use impostors for far away avatars
     static F32      sRenderDistance; // distance at which avatars will render.
-    static BOOL     sShowAnimationDebug; // show animation debug info
-    static BOOL     sShowCollisionVolumes;  // show skeletal collision volumes
-    static BOOL     sVisibleInFirstPerson;
+    static bool     sShowAnimationDebug; // show animation debug info
+    static bool     sShowCollisionVolumes;  // show skeletal collision volumes
+    static bool     sVisibleInFirstPerson;
     static S32      sNumLODChangesThisFrame;
     static S32      sNumVisibleChatBubbles;
-    static BOOL     sDebugInvisible;
-    static BOOL     sShowAttachmentPoints;
+    static bool     sDebugInvisible;
+    static bool     sShowAttachmentPoints;
     static F32      sLODFactor; // user-settable LOD factor
     static F32      sPhysicsLODFactor; // user-settable physics LOD factor
-    static BOOL     sJointDebug; // output total number of joints being touched for each avatar
-    static BOOL     sLipSyncEnabled;
+    static bool     sJointDebug; // output total number of joints being touched for each avatar
+    static bool     sLipSyncEnabled;
 
     static LLPointer<LLViewerTexture>  sCloudTexture;
 
@@ -384,7 +385,8 @@ public:
     // Loading state
     //--------------------------------------------------------------------
 public:
-    BOOL            isFullyLoaded() const;
+    bool            isFullyLoaded() const;
+    F32             getFirstDecloudTime() const {return mFirstDecloudTime;}
 
     // check and return current state relative to limits
     // default will test only the geometry (combined=false).
@@ -398,8 +400,8 @@ public:
     bool            isTooComplex() const;
     bool            visualParamWeightsAreDefault();
     virtual bool    getIsCloud() const;
-    BOOL            isFullyTextured() const;
-    BOOL            hasGray() const;
+    bool            isFullyTextured() const;
+    bool            hasGray() const;
     S32             getRezzedStatus() const; // 0 = cloud, 1 = gray, 2 = textured, 3 = textured and fully downloaded.
     void            updateRezzedStatusTimers(S32 status);
 
@@ -417,19 +419,19 @@ public:
 
 protected:
     LLViewerStats::PhaseMap& getPhases() { return mPhases; }
-    BOOL            updateIsFullyLoaded();
-    BOOL            processFullyLoadedChange(bool loading);
+    bool            updateIsFullyLoaded();
+    bool            processFullyLoadedChange(bool loading);
     void            updateRuthTimer(bool loading);
     F32             calcMorphAmount();
 
 private:
-    BOOL            mFirstFullyVisible;
-    F32             mFirstUseDelaySeconds;
+    bool            mFirstFullyVisible;
+    F32             mFirstDecloudTime;
     LLFrameTimer    mFirstAppearanceMessageTimer;
 
-    BOOL            mFullyLoaded;
-    BOOL            mPreviousFullyLoaded;
-    BOOL            mFullyLoadedInitialized;
+    bool            mFullyLoaded;
+    bool            mPreviousFullyLoaded;
+    bool            mFullyLoadedInitialized;
     S32             mFullyLoadedFrameCounter;
     LLColor4        mMutedAVColor;
     LLFrameTimer    mFullyLoadedTimer;
@@ -464,7 +466,7 @@ public:
     void                debugBodySize() const;
     void                postPelvisSetRecalc( void );
 
-    /*virtual*/ BOOL    loadSkeletonNode();
+    /*virtual*/ bool    loadSkeletonNode();
     void                initAttachmentPoints(bool ignore_hud_joints = false);
     /*virtual*/ void    buildCharacter();
     void                resetVisualParams();
@@ -490,7 +492,14 @@ public:
     U32         renderImpostor(LLColor4U color = LLColor4U(255,255,255,255), S32 diffuse_channel = 0);
     bool        isVisuallyMuted();
     bool        isInMuteList() const;
-    void        forceUpdateVisualMuteSettings();
+
+    // states for RenderAvatarComplexityMode
+    enum ERenderComplexityMode
+    {
+        AV_RENDER_LIMIT_BY_COMPLEXITY = 0,
+        AV_RENDER_ALWAYS_SHOW_FRIENDS = 1,
+        AV_RENDER_ONLY_SHOW_FRIENDS   = 2
+    };
 
     // Visual Mute Setting is an input. Does not necessarily determine
     // what the avatar looks like, because it interacts with other
@@ -535,7 +544,7 @@ public:
     U32         renderRigid();
     U32         renderSkinned();
     F32         getLastSkinTime() { return mLastSkinTime; }
-    U32         renderTransparent(BOOL first_pass);
+    U32         renderTransparent(bool first_pass);
     void        renderCollisionVolumes();
     void        renderBones(const std::string &selected_joint = std::string());
     void        renderJoints();
@@ -552,7 +561,7 @@ private:
     F32         mAttachmentEstTriangleCount;
     bool        shouldAlphaMask();
 
-    BOOL        mNeedsSkin; // avatar has been animated and verts have not been updated
+    bool        mNeedsSkin; // avatar has been animated and verts have not been updated
     F32         mLastSkinTime; //value of gFrameTimeSeconds at last skin update
 
     S32         mUpdatePeriod;
@@ -593,8 +602,8 @@ public:
     // Morph masks
     //--------------------------------------------------------------------
 public:
-    /*virtual*/ void    applyMorphMask(U8* tex_data, S32 width, S32 height, S32 num_components, LLAvatarAppearanceDefines::EBakedTextureIndex index = LLAvatarAppearanceDefines::BAKED_NUM_INDICES);
-    BOOL        morphMaskNeedsUpdate(LLAvatarAppearanceDefines::EBakedTextureIndex index = LLAvatarAppearanceDefines::BAKED_NUM_INDICES);
+    /*virtual*/ void    applyMorphMask(const U8* tex_data, S32 width, S32 height, S32 num_components, LLAvatarAppearanceDefines::EBakedTextureIndex index = LLAvatarAppearanceDefines::BAKED_NUM_INDICES);
+    bool        morphMaskNeedsUpdate(LLAvatarAppearanceDefines::EBakedTextureIndex index = LLAvatarAppearanceDefines::BAKED_NUM_INDICES);
 
 
     //--------------------------------------------------------------------
@@ -610,7 +619,7 @@ protected:
     void        updateVisibility();
 private:
     U32         mVisibilityRank;
-    BOOL        mVisible;
+    bool        mVisible;
 
     //--------------------------------------------------------------------
     // Shadowing
@@ -627,9 +636,9 @@ private:
     // Impostors
     //--------------------------------------------------------------------
 public:
-    virtual BOOL isImpostor();
-    BOOL        shouldImpostor(const F32 rank_factor = 1.0);
-    BOOL        needsImpostorUpdate() const;
+    virtual bool isImpostor();
+    bool        shouldImpostor(const F32 rank_factor = 1.0);
+    bool        needsImpostorUpdate() const;
     const LLVector3& getImpostorOffset() const;
     const LLVector2& getImpostorDim() const;
     void        getImpostorValues(LLVector4a* extents, LLVector3& angle, F32& distance) const;
@@ -638,7 +647,7 @@ public:
     static void resetImpostors();
     static void updateImpostors();
     LLRenderTarget mImpostor;
-    BOOL        mNeedsImpostorUpdate;
+    bool        mNeedsImpostorUpdate;
     S32         mLastImpostorUpdateReason;
     F32SecondsImplicit mLastImpostorUpdateFrameTime;
     const LLVector3*  getLastAnimExtents() const { return mLastAnimExtents; }
@@ -649,7 +658,7 @@ private:
     LLVector2   mImpostorDim;
     // This becomes true in the constructor and false after the first
     // idleUpdateMisc(). Not clear it serves any purpose.
-    BOOL        mNeedsAnimUpdate;
+    bool        mNeedsAnimUpdate;
     bool        mNeedsExtentUpdate;
     LLVector3   mImpostorAngle;
     F32         mImpostorDistance;
@@ -665,7 +674,7 @@ private:
 public:
     LLVector4   mWindVec;
     F32         mRipplePhase;
-    BOOL        mBelowWater;
+    bool        mBelowWater;
 private:
     F32         mWindFreq;
     LLFrameTimer mRippleTimer;
@@ -678,9 +687,9 @@ private:
     //--------------------------------------------------------------------
 public:
     static void cullAvatarsByPixelArea();
-    BOOL        isCulled() const { return mCulled; }
+    bool        isCulled() const { return mCulled; }
 private:
-    BOOL        mCulled;
+    bool        mCulled;
 
     //--------------------------------------------------------------------
     // Constants
@@ -704,13 +713,13 @@ public:
     // Loading status
     //--------------------------------------------------------------------
 public:
-    virtual BOOL    isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex type, U32 index = 0) const;
-    virtual BOOL    isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, U32 index = 0) const;
-    virtual BOOL    isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerWearable *wearable) const;
+    virtual bool    isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex type, U32 index = 0) const;
+    virtual bool    isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, U32 index = 0) const;
+    virtual bool    isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerWearable *wearable) const;
 
-    BOOL            isFullyBaked();
-    static BOOL     areAllNearbyInstancesBaked(S32& grey_avatars);
-    static void     getNearbyRezzedStats(std::vector<S32>& counts);
+    bool            isFullyBaked();
+    static bool     areAllNearbyInstancesBaked(S32& grey_avatars);
+    static void     getNearbyRezzedStats(std::vector<S32>& counts, F32& avg_cloud_time, S32& cloud_avatars);
     static std::string rezStatusToString(S32 status);
 
     //--------------------------------------------------------------------
@@ -721,16 +730,16 @@ public:
     void            releaseComponentTextures(); // ! BACKWARDS COMPATIBILITY !
 
 protected:
-    static void     onBakedTextureMasksLoaded(BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata);
-    static void     onInitialBakedTextureLoaded(BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata);
-    static void     onBakedTextureLoaded(BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata);
+    static void     onBakedTextureMasksLoaded(bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata);
+    static void     onInitialBakedTextureLoaded(bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata);
+    static void     onBakedTextureLoaded(bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata);
     virtual void    removeMissingBakedTextures();
     void            useBakedTexture(const LLUUID& id);
     LLViewerTexLayerSet*  getTexLayerSet(const U32 index) const { return dynamic_cast<LLViewerTexLayerSet*>(mBakedTextureDatas[index].mTexLayerSet);    }
 
 
     LLLoadedCallbackEntry::source_callback_list_t mCallbackTextureList ;
-    BOOL mLoadedCallbacksPaused;
+    bool mLoadedCallbacksPaused;
     S32 mLoadedCallbackTextures; // count of 'loaded' baked textures, filled from mCallbackTextureList
     LLFrameTimer mLastTexCallbackAddedTime;
     std::set<LLUUID>    mTextureIDs;
@@ -738,10 +747,10 @@ protected:
     // Local Textures
     //--------------------------------------------------------------------
 protected:
-    virtual void    setLocalTexture(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerTexture* tex, BOOL baked_version_exits, U32 index = 0);
-    virtual void    addLocalTextureStats(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerFetchedTexture* imagep, F32 texel_area_ratio, BOOL rendered, BOOL covered_by_baked);
+    virtual void    setLocalTexture(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerTexture* tex, bool baked_version_exits, U32 index = 0);
+    virtual void    addLocalTextureStats(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerFetchedTexture* imagep, F32 texel_area_ratio, bool rendered, bool covered_by_baked);
     // MULTI-WEARABLE: make self-only?
-    virtual void    setBakedReady(LLAvatarAppearanceDefines::ETextureIndex type, BOOL baked_version_exists, U32 index = 0);
+    virtual void    setBakedReady(LLAvatarAppearanceDefines::ETextureIndex type, bool baked_version_exists, U32 index = 0);
 
     //--------------------------------------------------------------------
     // Texture accessors
@@ -776,8 +785,8 @@ public:
     // Static texture/mesh/baked dictionary
     //--------------------------------------------------------------------
 public:
-    static BOOL     isIndexLocalTexture(LLAvatarAppearanceDefines::ETextureIndex i);
-    static BOOL     isIndexBakedTexture(LLAvatarAppearanceDefines::ETextureIndex i);
+    static bool     isIndexLocalTexture(LLAvatarAppearanceDefines::ETextureIndex i);
+    static bool     isIndexBakedTexture(LLAvatarAppearanceDefines::ETextureIndex i);
 
     //--------------------------------------------------------------------
     // Messaging
@@ -785,8 +794,8 @@ public:
 public:
     void            onFirstTEMessageReceived();
 private:
-    BOOL            mFirstTEMessageReceived;
-    BOOL            mFirstAppearanceMessageReceived;
+    bool            mFirstTEMessageReceived;
+    bool            mFirstAppearanceMessageReceived;
 
 /**                    Textures
  **                                                                            **
@@ -841,13 +850,13 @@ private:
     virtual void    dirtyMesh(S32 priority); // Dirty the avatar mesh, with priority
     LLViewerJoint*  getViewerJoint(S32 idx);
     S32             mDirtyMesh; // 0 -- not dirty, 1 -- morphed, 2 -- LOD
-    BOOL            mMeshTexturesDirty;
+    bool            mMeshTexturesDirty;
 
     //--------------------------------------------------------------------
     // Destroy invisible mesh
     //--------------------------------------------------------------------
 protected:
-    BOOL            mMeshValid;
+    bool            mMeshValid;
     LLFrameTimer    mMeshInvisibleTime;
 
 /**                    Meshes
@@ -873,31 +882,31 @@ public:
     // Appearance morphing
     //--------------------------------------------------------------------
 public:
-    BOOL            getIsAppearanceAnimating() const { return mAppearanceAnimating; }
+    bool            getIsAppearanceAnimating() const { return mAppearanceAnimating; }
 
     // True if we are computing our appearance via local compositing
     // instead of baked textures, as for example during wearable
     // editing or when waiting for a subsequent server rebake.
-    /*virtual*/ BOOL    isUsingLocalAppearance() const { return mUseLocalAppearance; }
+    /*virtual*/ bool    isUsingLocalAppearance() const { return mUseLocalAppearance; }
 
     // True if we are currently in appearance editing mode. Often but
     // not always the same as isUsingLocalAppearance().
-    /*virtual*/ BOOL    isEditingAppearance() const { return mIsEditingAppearance; }
+    /*virtual*/ bool    isEditingAppearance() const { return mIsEditingAppearance; }
 
     // FIXME review isUsingLocalAppearance uses, some should be isEditing instead.
 
 private:
-    BOOL            mAppearanceAnimating;
+    bool            mAppearanceAnimating;
     LLFrameTimer    mAppearanceMorphTimer;
     F32             mLastAppearanceBlendTime;
-    BOOL            mIsEditingAppearance; // flag for if we're actively in appearance editing mode
-    BOOL            mUseLocalAppearance; // flag for if we're using a local composite
+    bool            mIsEditingAppearance; // flag for if we're actively in appearance editing mode
+    bool            mUseLocalAppearance; // flag for if we're using a local composite
 
     //--------------------------------------------------------------------
     // Visibility
     //--------------------------------------------------------------------
 public:
-    BOOL            isVisible() const;
+    bool            isVisible() const;
     virtual bool    shouldRenderRigged() const;
     void            setVisibilityRank(U32 rank);
     U32             getVisibilityRank() const { return mVisibilityRank; }
@@ -917,12 +926,12 @@ public:
 public:
     void                clampAttachmentPositions();
     virtual const LLViewerJointAttachment* attachObject(LLViewerObject *viewer_object);
-    virtual BOOL        detachObject(LLViewerObject *viewer_object);
+    virtual bool        detachObject(LLViewerObject *viewer_object);
     static bool         getRiggedMeshID( LLViewerObject* pVO, LLUUID& mesh_id );
     void                cleanupAttachedMesh( LLViewerObject* pVO );
     bool                hasPendingAttachedMeshes();
     static LLVOAvatar*  findAvatarFromAttachment(LLViewerObject* obj);
-    /*virtual*/ BOOL    isWearingWearableType(LLWearableType::EType type ) const;
+    /*virtual*/ bool    isWearingWearableType(LLWearableType::EType type ) const;
     LLViewerObject *    findAttachmentByID( const LLUUID & target_id ) const;
     LLViewerJointAttachment* getTargetAttachmentPoint(LLViewerObject* viewer_object);
 
@@ -934,22 +943,28 @@ protected:
     // Map of attachment points, by ID
     //--------------------------------------------------------------------
 public:
-    S32                 getAttachmentCount(); // Warning: order(N) not order(1) // currently used only by -self
+    S32                 getAttachmentCount() const; // Warning: order(N) not order(1)
     typedef std::map<S32, LLViewerJointAttachment*> attachment_map_t;
     attachment_map_t                                mAttachmentPoints;
     std::vector<LLPointer<LLViewerObject> >         mPendingAttachment;
 
+    // List of attachments' ids with attach points from simulator.
+    // we need this info to know when all attachments are present.
+    std::map<LLUUID, S32>                           mSimAttachments;
+    S32                                             mLastCloudAttachmentCount;
+    LLFrameTimer                                    mLastCloudAttachmentChangeTime;
+
     //--------------------------------------------------------------------
     // HUD functions
     //--------------------------------------------------------------------
 public:
-    BOOL                hasHUDAttachment() const;
+    bool                hasHUDAttachment() const;
     LLBBox              getHUDBBox() const;
     void                resetHUDAttachments();
     S32                 getMaxAttachments() const;
-    BOOL                canAttachMoreObjects(U32 n=1) const;
+    bool                canAttachMoreObjects(U32 n=1) const;
     S32                 getMaxAnimatedObjectAttachments() const;
-    BOOL                canAttachMoreAnimatedObjects(U32 n=1) const;
+    bool                canAttachMoreAnimatedObjects(U32 n=1) const;
 protected:
     U32                 getNumAttachments() const; // O(N), not O(1)
     U32                 getNumAnimatedObjectAttachments() const; // O(N), not O(1)
@@ -967,10 +982,10 @@ protected:
     // Animations
     //--------------------------------------------------------------------
 public:
-    BOOL            isAnyAnimationSignaled(const LLUUID *anim_array, const S32 num_anims) const;
+    bool            isAnyAnimationSignaled(const LLUUID *anim_array, const S32 num_anims) const;
     void            processAnimationStateChanges();
 protected:
-    BOOL            processSingleAnimationStateChange(const LLUUID &anim_id, BOOL start);
+    bool            processSingleAnimationStateChange(const LLUUID &anim_id, bool start);
     void            resetAnimations();
 private:
     LLTimer         mAnimTimer;
@@ -994,8 +1009,8 @@ public:
 public:
     void            addChat(const LLChat& chat);
     void            clearChat();
-    void            startTyping() { mTyping = TRUE; mTypingTimer.reset(); }
-    void            stopTyping() { mTyping = FALSE; }
+    void            startTyping() { mTyping = true; mTypingTimer.reset(); }
+    void            stopTyping() { mTyping = false; }
 private:
     bool            mVisibleChat;
 
@@ -1011,7 +1026,7 @@ private:
     // Flight
     //--------------------------------------------------------------------
 public:
-    BOOL            mInAir;
+    bool            mInAir;
     LLFrameTimer    mTimeInAir;
 
 /**                    Actions
@@ -1025,7 +1040,7 @@ public:
 
 private:
     F32         mSpeedAccum; // measures speed (for diagnostics mostly).
-    BOOL        mTurning; // controls hysteresis on avatar rotation
+    bool        mTurning; // controls hysteresis on avatar rotation
     F32         mSpeed; // misc. animation repeated state
 
     //--------------------------------------------------------------------
@@ -1043,7 +1058,7 @@ protected:
     // Material being stepped on
     //--------------------------------------------------------------------
 private:
-    BOOL        mStepOnLand;
+    bool        mStepOnLand;
     U8          mStepMaterial;
     LLVector3   mStepObjectVelocity;
 
@@ -1057,7 +1072,7 @@ private:
  **/
 
 public:
-    /*virtual*/ BOOL    setParent(LLViewerObject* parent);
+    /*virtual*/ bool    setParent(LLViewerObject* parent);
     /*virtual*/ void    addChild(LLViewerObject *childp);
     /*virtual*/ void    removeChild(LLViewerObject *childp);
 
@@ -1065,13 +1080,13 @@ public:
     // Sitting
     //--------------------------------------------------------------------
 public:
-    void            sitDown(BOOL bSitting);
-    BOOL            isSitting(){return mIsSitting;}
+    void            sitDown(bool bSitting);
+    bool            isSitting(){return mIsSitting;}
     void            sitOnObject(LLViewerObject *sit_object);
     void            getOffObject();
 private:
     // set this property only with LLVOAvatar::sitDown method
-    BOOL            mIsSitting;
+    bool            mIsSitting;
     // position backup in case of missing data
     LLVector3       mLastRootPos;
 
@@ -1100,7 +1115,7 @@ private:
     bool            mNameFriend;
     bool            mNameCloud;
     F32             mNameAlpha;
-    BOOL            mRenderGroupTitles;
+    bool            mRenderGroupTitles;
 
     //--------------------------------------------------------------------
     // Display the name (then optionally fade it out)
@@ -1111,7 +1126,7 @@ public:
 private:
     LLFrameTimer    mTimeVisible;
     std::deque<LLChat> mChats;
-    BOOL            mTyping;
+    bool            mTyping;
     LLFrameTimer    mTypingTimer;
 
 /**                    Name
@@ -1149,8 +1164,8 @@ public:
     void                setFootPlane(const LLVector4 &plane) { mFootPlane = plane; }
     LLVector4           mFootPlane;
 private:
-    BOOL                mWasOnGroundLeft;
-    BOOL                mWasOnGroundRight;
+    bool                mWasOnGroundLeft;
+    bool                mWasOnGroundRight;
 
 /**                    Sounds
  **                                                                            **
@@ -1179,7 +1194,7 @@ public:
     static F32          sGreyUpdateTime; // Last time stats were updated (to prevent multiple updates per frame)
 protected:
     S32                 getUnbakedPixelAreaRank();
-    BOOL                mHasGrey;
+    bool                mHasGrey;
 private:
     F32                 mMinPixelArea;
     F32                 mMaxPixelArea;
diff --git a/indra/newview/llvoavatarself.cpp b/indra/newview/llvoavatarself.cpp
index 0a13b7d309..e4a7b53d9f 100644
--- a/indra/newview/llvoavatarself.cpp
+++ b/indra/newview/llvoavatarself.cpp
@@ -78,7 +78,7 @@
 
 LLPointer<LLVOAvatarSelf> gAgentAvatarp = NULL;
 
-BOOL isAgentAvatarValid()
+bool isAgentAvatarValid()
 {
     return (gAgentAvatarp.notNull() && gAgentAvatarp->isValid());
 }
@@ -172,7 +172,7 @@ LLVOAvatarSelf::LLVOAvatarSelf(const LLUUID& id,
     mInitialMetric(true),
     mMetricSequence(0)
 {
-    mMotionController.mIsSelf = TRUE;
+    mMotionController.mIsSelf = true;
 
     LL_DEBUGS() << "Marking avatar as self " << id << LL_ENDL;
 }
@@ -200,7 +200,7 @@ bool update_avatar_rez_metrics()
 
 void LLVOAvatarSelf::initInstance()
 {
-    BOOL status = TRUE;
+    bool status = true;
     // creates hud joint(mScreen) among other things
     status &= loadAvatarSelf();
 
@@ -300,12 +300,12 @@ void LLVOAvatarSelf::markDead()
     LLVOAvatar::markDead();
 }
 
-/*virtual*/ BOOL LLVOAvatarSelf::loadAvatar()
+/*virtual*/ bool LLVOAvatarSelf::loadAvatar()
 {
-    BOOL success = LLVOAvatar::loadAvatar();
+    bool success = LLVOAvatar::loadAvatar();
 
     // set all parameters stored directly in the avatar to have
-    // the isSelfParam to be TRUE - this is used to prevent
+    // the isSelfParam to be true - this is used to prevent
     // them from being animated or trigger accidental rebakes
     // when we copy params from the wearable to the base avatar.
     for (LLViewerVisualParam* param = (LLViewerVisualParam*) getFirstVisualParam();
@@ -314,7 +314,7 @@ void LLVOAvatarSelf::markDead()
     {
         if (param->getWearableType() != LLWearableType::WT_INVALID)
         {
-            param->setIsDummy(TRUE);
+            param->setIsDummy(true);
         }
     }
 
@@ -322,20 +322,20 @@ void LLVOAvatarSelf::markDead()
 }
 
 
-BOOL LLVOAvatarSelf::loadAvatarSelf()
+bool LLVOAvatarSelf::loadAvatarSelf()
 {
-    BOOL success = TRUE;
+    bool success = true;
     // avatar_skeleton.xml
     if (!buildSkeletonSelf(sAvatarSkeletonInfo))
     {
         LL_WARNS() << "avatar file: buildSkeleton() failed" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     return success;
 }
 
-BOOL LLVOAvatarSelf::buildSkeletonSelf(const LLAvatarSkeletonInfo *info)
+bool LLVOAvatarSelf::buildSkeletonSelf(const LLAvatarSkeletonInfo *info)
 {
     // add special-purpose "screen" joint
     mScreenp = new LLViewerJoint("mScreen", NULL);
@@ -347,11 +347,11 @@ BOOL LLVOAvatarSelf::buildSkeletonSelf(const LLAvatarSkeletonInfo *info)
     // SL-315
     mScreenp->setWorldPosition(LLVector3::zero);
     // need to update screen agressively when sidebar opens/closes, for example
-    mScreenp->mUpdateXform = TRUE;
-    return TRUE;
+    mScreenp->mUpdateXform = true;
+    return true;
 }
 
-BOOL LLVOAvatarSelf::buildMenus()
+bool LLVOAvatarSelf::buildMenus()
 {
     //-------------------------------------------------------------------------
     // build the attach and detach menus
@@ -652,7 +652,7 @@ BOOL LLVOAvatarSelf::buildMenus()
             }
         }
     }
-    return TRUE;
+    return true;
 }
 
 void LLVOAvatarSelf::cleanup()
@@ -691,7 +691,7 @@ bool LLVOAvatarSelf::updateCharacter(LLAgent &agent)
 }
 
 // virtual
-BOOL LLVOAvatarSelf::isValid() const
+bool LLVOAvatarSelf::isValid() const
 {
     return ((getRegion() != NULL) && !isDead());
 }
@@ -727,39 +727,39 @@ LLJoint *LLVOAvatarSelf::getJoint(const std::string &name)
 }
 
 // virtual
-BOOL LLVOAvatarSelf::setVisualParamWeight(const LLVisualParam *which_param, F32 weight)
+bool LLVOAvatarSelf::setVisualParamWeight(const LLVisualParam *which_param, F32 weight)
 {
     if (!which_param)
     {
-        return FALSE;
+        return false;
     }
     LLViewerVisualParam *param = (LLViewerVisualParam*) LLCharacter::getVisualParam(which_param->getID());
     return setParamWeight(param,weight);
 }
 
 // virtual
-BOOL LLVOAvatarSelf::setVisualParamWeight(const char* param_name, F32 weight)
+bool LLVOAvatarSelf::setVisualParamWeight(const char* param_name, F32 weight)
 {
     if (!param_name)
     {
-        return FALSE;
+        return false;
     }
     LLViewerVisualParam *param = (LLViewerVisualParam*) LLCharacter::getVisualParam(param_name);
     return setParamWeight(param,weight);
 }
 
 // virtual
-BOOL LLVOAvatarSelf::setVisualParamWeight(S32 index, F32 weight)
+bool LLVOAvatarSelf::setVisualParamWeight(S32 index, F32 weight)
 {
     LLViewerVisualParam *param = (LLViewerVisualParam*) LLCharacter::getVisualParam(index);
     return setParamWeight(param,weight);
 }
 
-BOOL LLVOAvatarSelf::setParamWeight(const LLViewerVisualParam *param, F32 weight)
+bool LLVOAvatarSelf::setParamWeight(const LLViewerVisualParam *param, F32 weight)
 {
     if (!param)
     {
-        return FALSE;
+        return false;
     }
 
     if (param->getCrossWearable())
@@ -845,7 +845,7 @@ void LLVOAvatarSelf::stopMotionFromSource(const LLUUID& source_id)
     LLViewerObject* object = gObjectList.findObject(source_id);
     if (object)
     {
-        object->setFlagsWithoutUpdate(FLAGS_ANIM_SOURCE, FALSE);
+        object->setFlagsWithoutUpdate(FLAGS_ANIM_SOURCE, false);
     }
 }
 
@@ -874,7 +874,7 @@ void LLVOAvatarSelf::setLocalTextureTE(U8 te, LLViewerTexture* image, U32 index)
 //virtual
 void LLVOAvatarSelf::removeMissingBakedTextures()
 {
-    BOOL removed = FALSE;
+    bool removed = false;
     for (U32 i = 0; i < mBakedTextureDatas.size(); i++)
     {
         const S32 te = mBakedTextureDatas[i].mTextureIndex;
@@ -889,7 +889,7 @@ void LLVOAvatarSelf::removeMissingBakedTextures()
             if (imagep && imagep != tex)
             {
                 setTEImage(te, imagep);
-                removed = TRUE;
+                removed = true;
             }
         }
     }
@@ -899,7 +899,7 @@ void LLVOAvatarSelf::removeMissingBakedTextures()
         for (U32 i = 0; i < mBakedTextureDatas.size(); i++)
         {
             LLViewerTexLayerSet *layerset = getTexLayerSet(i);
-            layerset->setUpdatesEnabled(TRUE);
+            layerset->setUpdatesEnabled(true);
             invalidateComposite(layerset);
         }
         updateMeshTextures();
@@ -1024,7 +1024,7 @@ void LLVOAvatarSelf::idleUpdateTractorBeam()
         if (mBeamTimer.getElapsedTimeF32() > 0.25f)
         {
             mBeam->setColor(LLColor4U(gAgent.getEffectColor()));
-            mBeam->setNeedsSendToSim(TRUE);
+            mBeam->setNeedsSendToSim(true);
             mBeamTimer.reset();
         }
     }
@@ -1037,7 +1037,7 @@ void LLVOAvatarSelf::idleUpdateTractorBeam()
 void LLVOAvatarSelf::restoreMeshData()
 {
     //LL_INFOS() << "Restoring" << LL_ENDL;
-    mMeshValid = TRUE;
+    mMeshValid = true;
     updateJointLODs();
     updateAttachmentVisibility(gAgentCamera.getCameraMode());
 
@@ -1059,7 +1059,7 @@ void LLVOAvatarSelf::updateAttachmentVisibility(U32 camera_mode)
         LLViewerJointAttachment* attachment = iter->second;
         if (attachment->getIsHUDAttachment())
         {
-            attachment->setAttachmentVisibility(TRUE);
+            attachment->setAttachmentVisibility(true);
         }
         else
         {
@@ -1068,15 +1068,15 @@ void LLVOAvatarSelf::updateAttachmentVisibility(U32 camera_mode)
                 case CAMERA_MODE_MOUSELOOK:
                     if ((LLVOAvatar::sVisibleInFirstPerson && attachment->getVisibleInFirstPerson()) || gPipeline.mHeroProbeManager.isMirrorPass())
                     {
-                        attachment->setAttachmentVisibility(TRUE);
+                        attachment->setAttachmentVisibility(true);
                     }
                     else
                     {
-                        attachment->setAttachmentVisibility(FALSE);
+                        attachment->setAttachmentVisibility(false);
                     }
                     break;
                 default:
-                    attachment->setAttachmentVisibility(TRUE);
+                    attachment->setAttachmentVisibility(true);
                     break;
             }
         }
@@ -1086,7 +1086,7 @@ void LLVOAvatarSelf::updateAttachmentVisibility(U32 camera_mode)
 //-----------------------------------------------------------------------------
 // updatedWearable( LLWearableType::EType type )
 // forces an update to any baked textures relevant to type.
-// will force an upload of the resulting bake if the second parameter is TRUE
+// will force an upload of the resulting bake if the second parameter is true
 //-----------------------------------------------------------------------------
 void LLVOAvatarSelf::wearableUpdated(LLWearableType::EType type)
 {
@@ -1122,7 +1122,7 @@ void LLVOAvatarSelf::wearableUpdated(LLWearableType::EType type)
 //-----------------------------------------------------------------------------
 // isWearingAttachment()
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatarSelf::isWearingAttachment(const LLUUID& inv_item_id) const
+bool LLVOAvatarSelf::isWearingAttachment(const LLUUID& inv_item_id) const
 {
     const LLUUID& base_inv_item_id = gInventory.getLinkedItemID(inv_item_id);
     for (attachment_map_t::const_iterator iter = mAttachmentPoints.begin();
@@ -1132,10 +1132,10 @@ BOOL LLVOAvatarSelf::isWearingAttachment(const LLUUID& inv_item_id) const
         const LLViewerJointAttachment* attachment = iter->second;
         if (attachment->getAttachedObject(base_inv_item_id))
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
@@ -1212,7 +1212,7 @@ const LLViewerJointAttachment *LLVOAvatarSelf::attachObject(LLViewerObject *view
 }
 
 //virtual
-BOOL LLVOAvatarSelf::detachObject(LLViewerObject *viewer_object)
+bool LLVOAvatarSelf::detachObject(LLViewerObject *viewer_object)
 {
     const LLUUID attachment_id = viewer_object->getAttachmentItemID();
     if ( LLVOAvatar::detachObject(viewer_object) )
@@ -1220,7 +1220,7 @@ BOOL LLVOAvatarSelf::detachObject(LLViewerObject *viewer_object)
         // the simulator should automatically handle permission revocation
 
         stopMotionFromSource(attachment_id);
-        LLFollowCamMgr::getInstance()->setCameraActive(viewer_object->getID(), FALSE);
+        LLFollowCamMgr::getInstance()->setCameraActive(viewer_object->getID(), false);
 
         LLViewerObject::const_child_list_t& child_list = viewer_object->getChildren();
         for (LLViewerObject::child_list_t::const_iterator iter = child_list.begin();
@@ -1232,7 +1232,7 @@ BOOL LLVOAvatarSelf::detachObject(LLViewerObject *viewer_object)
             // permissions revocation
 
             stopMotionFromSource(child_objectp->getID());
-            LLFollowCamMgr::getInstance()->setCameraActive(child_objectp->getID(), FALSE);
+            LLFollowCamMgr::getInstance()->setCameraActive(child_objectp->getID(), false);
         }
 
         // Make sure the inventory is in sync with the avatar.
@@ -1247,9 +1247,9 @@ BOOL LLVOAvatarSelf::detachObject(LLViewerObject *viewer_object)
             LLAppearanceMgr::instance().unregisterAttachment(attachment_id);
         }
 
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 bool LLVOAvatarSelf::hasAttachmentsInTrash()
@@ -1274,7 +1274,7 @@ bool LLVOAvatarSelf::hasAttachmentsInTrash()
 }
 
 // static
-BOOL LLVOAvatarSelf::detachAttachmentIntoInventory(const LLUUID &item_id)
+bool LLVOAvatarSelf::detachAttachmentIntoInventory(const LLUUID &item_id)
 {
     LLInventoryItem* item = gInventory.getItem(item_id);
     if (item)
@@ -1303,9 +1303,9 @@ BOOL LLVOAvatarSelf::detachAttachmentIntoInventory(const LLUUID &item_id)
                 LLAppearanceMgr::instance().removeCOFItemLinks(item_id);
             }
         }
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 U32 LLVOAvatarSelf::getNumWearables(LLAvatarAppearanceDefines::ETextureIndex i) const
@@ -1315,7 +1315,7 @@ U32 LLVOAvatarSelf::getNumWearables(LLAvatarAppearanceDefines::ETextureIndex i)
 }
 
 // virtual
-void LLVOAvatarSelf::localTextureLoaded(BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src_raw, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata)
+void LLVOAvatarSelf::localTextureLoaded(bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src_raw, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata)
 {
 
     const LLUUID& src_id = src_vi->getID();
@@ -1364,20 +1364,20 @@ void LLVOAvatarSelf::localTextureLoaded(BOOL success, LLViewerFetchedTexture *sr
 }
 
 // virtual
-BOOL LLVOAvatarSelf::getLocalTextureGL(ETextureIndex type, LLViewerTexture** tex_pp, U32 index) const
+bool LLVOAvatarSelf::getLocalTextureGL(ETextureIndex type, LLViewerTexture** tex_pp, U32 index) const
 {
     *tex_pp = NULL;
 
-    if (!isIndexLocalTexture(type)) return FALSE;
-    if (getLocalTextureID(type, index) == IMG_DEFAULT_AVATAR) return TRUE;
+    if (!isIndexLocalTexture(type)) return false;
+    if (getLocalTextureID(type, index) == IMG_DEFAULT_AVATAR) return true;
 
     const LLLocalTextureObject *local_tex_obj = getLocalTextureObject(type, index);
     if (!local_tex_obj)
     {
-        return FALSE;
+        return false;
     }
     *tex_pp = dynamic_cast<LLViewerTexture*> (local_tex_obj->getImage());
-    return TRUE;
+    return true;
 }
 
 LLViewerFetchedTexture* LLVOAvatarSelf::getLocalTextureGL(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const
@@ -1417,7 +1417,7 @@ const LLUUID& LLVOAvatarSelf::getLocalTextureID(ETextureIndex type, U32 index) c
 // Returns true if at least the lowest quality discard level exists for every texture
 // in the layerset.
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatarSelf::isLocalTextureDataAvailable(const LLViewerTexLayerSet* layerset) const
+bool LLVOAvatarSelf::isLocalTextureDataAvailable(const LLViewerTexLayerSet* layerset) const
 {
     /* if (layerset == mBakedTextureDatas[BAKED_HEAD].mTexLayerSet)
        return getLocalDiscardLevel(TEX_HEAD_BODYPAINT) >= 0; */
@@ -1428,7 +1428,7 @@ BOOL LLVOAvatarSelf::isLocalTextureDataAvailable(const LLViewerTexLayerSet* laye
         const EBakedTextureIndex baked_index = baked_iter->first;
         if (layerset == mBakedTextureDatas[baked_index].mTexLayerSet)
         {
-            BOOL ret = true;
+            bool ret = true;
             const LLAvatarAppearanceDictionary::BakedEntry *baked_dict = baked_iter->second;
             for (texture_vec_t::const_iterator local_tex_iter = baked_dict->mLocalTextures.begin();
                  local_tex_iter != baked_dict->mLocalTextures.end();
@@ -1439,7 +1439,7 @@ BOOL LLVOAvatarSelf::isLocalTextureDataAvailable(const LLViewerTexLayerSet* laye
                 const U32 wearable_count = gAgentWearables.getWearableCount(wearable_type);
                 for (U32 wearable_index = 0; wearable_index < wearable_count; wearable_index++)
                 {
-                    BOOL tex_avail = (getLocalDiscardLevel(tex_index, wearable_index) >= 0);
+                    bool tex_avail = (getLocalDiscardLevel(tex_index, wearable_index) >= 0);
                     ret &= tex_avail;
                 }
             }
@@ -1447,7 +1447,7 @@ BOOL LLVOAvatarSelf::isLocalTextureDataAvailable(const LLViewerTexLayerSet* laye
         }
     }
     llassert(0);
-    return FALSE;
+    return false;
 }
 
 //-----------------------------------------------------------------------------
@@ -1456,7 +1456,7 @@ BOOL LLVOAvatarSelf::isLocalTextureDataAvailable(const LLViewerTexLayerSet* laye
 // Returns true if the highest quality discard level exists for every texture
 // in the layerset.
 //-----------------------------------------------------------------------------
-BOOL LLVOAvatarSelf::isLocalTextureDataFinal(const LLViewerTexLayerSet* layerset) const
+bool LLVOAvatarSelf::isLocalTextureDataFinal(const LLViewerTexLayerSet* layerset) const
 {
     const U32 desired_tex_discard_level = gSavedSettings.getU32("TextureDiscardLevel");
     // const U32 desired_tex_discard_level = 0; // hack to not bake textures on lower discard levels.
@@ -1479,19 +1479,19 @@ BOOL LLVOAvatarSelf::isLocalTextureDataFinal(const LLViewerTexLayerSet* layerset
                     if ((local_discard_level > (S32)(desired_tex_discard_level)) ||
                         (local_discard_level < 0 ))
                     {
-                        return FALSE;
+                        return false;
                     }
                 }
             }
-            return TRUE;
+            return true;
         }
     }
     llassert(0);
-    return FALSE;
+    return false;
 }
 
 
-BOOL LLVOAvatarSelf::isAllLocalTextureDataFinal() const
+bool LLVOAvatarSelf::isAllLocalTextureDataFinal() const
 {
     const U32 desired_tex_discard_level = gSavedSettings.getU32("TextureDiscardLevel");
     // const U32 desired_tex_discard_level = 0; // hack to not bake textures on lower discard levels
@@ -1512,18 +1512,18 @@ BOOL LLVOAvatarSelf::isAllLocalTextureDataFinal() const
                 if ((local_discard_level > (S32)(desired_tex_discard_level)) ||
                     (local_discard_level < 0 ))
                 {
-                    return FALSE;
+                    return false;
                 }
             }
         }
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLVOAvatarSelf::isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const
+bool LLVOAvatarSelf::isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const
 {
     LLUUID id;
-    BOOL isDefined = TRUE;
+    bool isDefined = true;
     if (isIndexLocalTexture(type))
     {
         const LLWearableType::EType wearable_type = sAvatarDictionary->getTEWearableType(type);
@@ -1553,7 +1553,7 @@ BOOL LLVOAvatarSelf::isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex t
 }
 
 //virtual
-BOOL LLVOAvatarSelf::isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const
+bool LLVOAvatarSelf::isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const
 {
     if (isIndexBakedTexture(type))
     {
@@ -1566,7 +1566,7 @@ BOOL LLVOAvatarSelf::isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex t
 }
 
 //virtual
-BOOL LLVOAvatarSelf::isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerWearable *wearable) const
+bool LLVOAvatarSelf::isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerWearable *wearable) const
 {
     if (isIndexBakedTexture(type))
     {
@@ -1581,7 +1581,7 @@ BOOL LLVOAvatarSelf::isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex t
     else
     {
         LL_WARNS() << "Wearable not found" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 }
 
@@ -1648,7 +1648,7 @@ void LLVOAvatarSelf::setupComposites()
     for (U32 i = 0; i < mBakedTextureDatas.size(); i++)
     {
         ETextureIndex tex_index = mBakedTextureDatas[i].mTextureIndex;
-        BOOL layer_baked = isTextureDefined(tex_index, gAgentWearables.getWearableCount(tex_index));
+        bool layer_baked = isTextureDefined(tex_index, gAgentWearables.getWearableCount(tex_index));
         LLViewerTexLayerSet *layerset = getTexLayerSet(i);
         if (layerset)
         {
@@ -1673,7 +1673,7 @@ void LLVOAvatarSelf::updateComposites()
 // virtual
 S32 LLVOAvatarSelf::getLocalDiscardLevel(ETextureIndex type, U32 wearable_index) const
 {
-    if (!isIndexLocalTexture(type)) return FALSE;
+    if (!isIndexLocalTexture(type)) return false;
 
     const LLLocalTextureObject *local_tex_obj = getLocalTextureObject(type, wearable_index);
     if (local_tex_obj)
@@ -1724,11 +1724,11 @@ void LLVOAvatarSelf::getLocalTextureByteCount(S32* gl_bytes) const
 }
 
 // virtual
-void LLVOAvatarSelf::setLocalTexture(ETextureIndex type, LLViewerTexture* src_tex, BOOL baked_version_ready, U32 index)
+void LLVOAvatarSelf::setLocalTexture(ETextureIndex type, LLViewerTexture* src_tex, bool baked_version_ready, U32 index)
 {
     if (!isIndexLocalTexture(type)) return;
 
-    LLViewerFetchedTexture* tex = LLViewerTextureManager::staticCastToFetchedTexture(src_tex, TRUE) ;
+    LLViewerFetchedTexture* tex = LLViewerTextureManager::staticCastToFetchedTexture(src_tex, true) ;
     if(!tex)
     {
         return ;
@@ -1789,7 +1789,7 @@ void LLVOAvatarSelf::setLocalTexture(ETextureIndex type, LLViewerTexture* src_te
                 }
                 else
                 {
-                    tex->setLoadedCallback(onLocalTextureLoaded, desired_discard, TRUE, FALSE, new LLAvatarTexData(getID(), type), NULL);
+                    tex->setLoadedCallback(onLocalTextureLoaded, desired_discard, true, false, new LLAvatarTexData(getID(), type), NULL);
                 }
             }
             tex->setMinDiscardLevel(desired_discard);
@@ -1801,7 +1801,7 @@ void LLVOAvatarSelf::setLocalTexture(ETextureIndex type, LLViewerTexture* src_te
 }
 
 //virtual
-void LLVOAvatarSelf::setBakedReady(LLAvatarAppearanceDefines::ETextureIndex type, BOOL baked_version_exists, U32 index)
+void LLVOAvatarSelf::setBakedReady(LLAvatarAppearanceDefines::ETextureIndex type, bool baked_version_exists, U32 index)
 {
     if (!isIndexLocalTexture(type)) return;
     LLLocalTextureObject *local_tex_obj = getLocalTextureObject(type,index);
@@ -1878,7 +1878,7 @@ void LLVOAvatarSelf::dumpLocalTextures() const
 // onLocalTextureLoaded()
 //-----------------------------------------------------------------------------
 
-void LLVOAvatarSelf::onLocalTextureLoaded(BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src_raw, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata)
+void LLVOAvatarSelf::onLocalTextureLoaded(bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src_raw, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata)
 {
     LLAvatarTexData *data = (LLAvatarTexData *)userdata;
     LLVOAvatarSelf *self = (LLVOAvatarSelf *)gObjectList.findObject(data->mAvatarID);
@@ -1898,7 +1898,7 @@ void LLVOAvatarSelf::onLocalTextureLoaded(BOOL success, LLViewerFetchedTexture *
 {
     if (isIndexLocalTexture((ETextureIndex)te))
     {
-        setLocalTexture((ETextureIndex)te, imagep, FALSE ,index);
+        setLocalTexture((ETextureIndex)te, imagep, false ,index);
     }
     else
     {
@@ -2017,7 +2017,7 @@ bool LLVOAvatarSelf::getIsCloud() const
 }
 
 /*static*/
-void LLVOAvatarSelf::debugOnTimingLocalTexLoaded(BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata)
+void LLVOAvatarSelf::debugOnTimingLocalTexLoaded(bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata)
 {
     if (gAgentAvatarp.notNull())
     {
@@ -2025,7 +2025,7 @@ void LLVOAvatarSelf::debugOnTimingLocalTexLoaded(BOOL success, LLViewerFetchedTe
     }
 }
 
-void LLVOAvatarSelf::debugTimingLocalTexLoaded(BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata)
+void LLVOAvatarSelf::debugTimingLocalTexLoaded(bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata)
 {
     LLAvatarTexData *data = (LLAvatarTexData *)userdata;
     if (!data)
@@ -2050,7 +2050,7 @@ void LLVOAvatarSelf::debugTimingLocalTexLoaded(BOOL success, LLViewerFetchedText
     }
 }
 
-void LLVOAvatarSelf::debugBakedTextureUpload(EBakedTextureIndex index, BOOL finished)
+void LLVOAvatarSelf::debugBakedTextureUpload(EBakedTextureIndex index, bool finished)
 {
     U32 done = 0;
     if (finished)
@@ -2189,7 +2189,7 @@ const std::string LLVOAvatarSelf::debugDumpAllLocalTextureDataInfo() const
     for (U32 i = 0; i < mBakedTextureDatas.size(); i++)
     {
         const LLAvatarAppearanceDictionary::BakedEntry *baked_dict = sAvatarDictionary->getBakedTexture((EBakedTextureIndex)i);
-        BOOL is_texture_final = TRUE;
+        bool is_texture_final = true;
         for (texture_vec_t::const_iterator local_tex_iter = baked_dict->mLocalTextures.begin();
              local_tex_iter != baked_dict->mLocalTextures.end();
              ++local_tex_iter)
@@ -2230,16 +2230,21 @@ void LLVOAvatarSelf::appearanceChangeMetricsCoro(std::string url)
 
     // Status of our own rezzing.
     msg["rez_status"] = LLVOAvatar::rezStatusToString(getRezzedStatus());
+    msg["first_decloud_time"] = getFirstDecloudTime();
 
     // Status of all nearby avs including ourself.
     msg["nearby"] = LLSD::emptyArray();
     std::vector<S32> rez_counts;
-    LLVOAvatar::getNearbyRezzedStats(rez_counts);
+    F32 avg_time;
+    S32 total_cloud_avatars;
+    LLVOAvatar::getNearbyRezzedStats(rez_counts, avg_time, total_cloud_avatars);
     for (S32 rez_stat = 0; rez_stat < rez_counts.size(); ++rez_stat)
     {
         std::string rez_status_name = LLVOAvatar::rezStatusToString(rez_stat);
         msg["nearby"][rez_status_name] = rez_counts[rez_stat];
     }
+    msg["nearby"]["avg_decloud_time"] = avg_time;
+    msg["nearby"]["cloud_total"] = total_cloud_avatars;
 
     //  std::vector<std::string> bucket_fields("timer_name","is_self","grid_x","grid_y","is_using_server_bake");
     std::vector<std::string> by_fields;
@@ -2385,22 +2390,22 @@ const LLUUID& LLVOAvatarSelf::grabBakedTexture(EBakedTextureIndex baked_index) c
     return LLUUID::null;
 }
 
-BOOL LLVOAvatarSelf::canGrabBakedTexture(EBakedTextureIndex baked_index) const
+bool LLVOAvatarSelf::canGrabBakedTexture(EBakedTextureIndex baked_index) const
 {
     ETextureIndex tex_index = sAvatarDictionary->bakedToLocalTextureIndex(baked_index);
     if (tex_index == TEX_NUM_INDICES)
     {
-        return FALSE;
+        return false;
     }
     // Check if the texture hasn't been baked yet.
     if (!isTextureDefined(tex_index, 0))
     {
         LL_DEBUGS() << "getTEImage( " << (U32) tex_index << " )->getID() == IMG_DEFAULT_AVATAR" << LL_ENDL;
-        return FALSE;
+        return false;
     }
 
     if (gAgent.isGodlikeWithoutAdminMenuFakery())
-        return TRUE;
+        return true;
 
     // Check permissions of textures that show up in the
     // baked texture.  We don't want people copying people's
@@ -2435,7 +2440,7 @@ BOOL LLVOAvatarSelf::canGrabBakedTexture(EBakedTextureIndex baked_index) const
                                                     LLInventoryModel::INCLUDE_TRASH,
                                                     asset_id_matches);
 
-                    BOOL can_grab = FALSE;
+                    bool can_grab = false;
                     LL_DEBUGS() << "item count for asset " << texture_id << ": " << items.size() << LL_ENDL;
                     if (items.size())
                     {
@@ -2445,22 +2450,22 @@ BOOL LLVOAvatarSelf::canGrabBakedTexture(EBakedTextureIndex baked_index) const
                             LLViewerInventoryItem* itemp = items[i];
                                                 if (itemp->getIsFullPerm())
                             {
-                                can_grab = TRUE;
+                                can_grab = true;
                                 break;
                             }
                         }
                     }
-                    if (!can_grab) return FALSE;
+                    if (!can_grab) return false;
                 }
             }
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLVOAvatarSelf::addLocalTextureStats( ETextureIndex type, LLViewerFetchedTexture* imagep,
-                                           F32 texel_area_ratio, BOOL render_avatar, BOOL covered_by_baked)
+                                           F32 texel_area_ratio, bool render_avatar, bool covered_by_baked)
 {
     if (!isIndexLocalTexture(type)) return;
 
@@ -2485,14 +2490,14 @@ void LLVOAvatarSelf::addLocalTextureStats( ETextureIndex type, LLViewerFetchedTe
                 imagep->forceUpdateBindStats() ;
                 if (imagep->getDiscardLevel() < 0)
                 {
-                    mHasGrey = TRUE; // for statistics gathering
+                    mHasGrey = true; // for statistics gathering
                 }
             }
         }
         else
         {
             // texture asset is missing
-            mHasGrey = TRUE; // for statistics gathering
+            mHasGrey = true; // for statistics gathering
         }
     }
 }
@@ -2614,7 +2619,7 @@ void LLVOAvatarSelf::forceBakeAllTextures(bool slam_for_debug)
         {
             if (slam_for_debug)
             {
-                layer_set->setUpdatesEnabled(TRUE);
+                layer_set->setUpdatesEnabled(true);
             }
 
             invalidateComposite(layer_set);
@@ -2819,18 +2824,18 @@ void LLVOAvatarSelf::setHoverOffset(const LLVector3& hover_offset, bool send_upd
 //------------------------------------------------------------------------
 // needsRenderBeam()
 //------------------------------------------------------------------------
-BOOL LLVOAvatarSelf::needsRenderBeam()
+bool LLVOAvatarSelf::needsRenderBeam()
 {
     LLTool *tool = LLToolMgr::getInstance()->getCurrentTool();
 
-    BOOL is_touching_or_grabbing = (tool == LLToolGrab::getInstance() && LLToolGrab::getInstance()->isEditing());
+    bool is_touching_or_grabbing = (tool == LLToolGrab::getInstance() && LLToolGrab::getInstance()->isEditing());
     LLViewerObject* objp = LLToolGrab::getInstance()->getEditingObject();
     if (objp // might need to be "!objp ||" instead of "objp &&".
         && (objp->isAttachment() || objp->isAvatar()))
     {
         // don't render grab tool's selection beam on hud objects,
         // attachments or avatars
-        is_touching_or_grabbing = FALSE;
+        is_touching_or_grabbing = false;
     }
     return is_touching_or_grabbing || (getAttachmentState() & AGENT_STATE_EDITING && LLSelectMgr::getInstance()->shouldShowSelection());
 }
diff --git a/indra/newview/llvoavatarself.h b/indra/newview/llvoavatarself.h
index 736bc11a4c..77556c8412 100644
--- a/indra/newview/llvoavatarself.h
+++ b/indra/newview/llvoavatarself.h
@@ -59,10 +59,10 @@ public:
     virtual void            initInstance(); // Called after construction to initialize the class.
     void                    cleanup();
 protected:
-    /*virtual*/ BOOL        loadAvatar();
-    BOOL                    loadAvatarSelf();
-    BOOL                    buildSkeletonSelf(const LLAvatarSkeletonInfo *info);
-    BOOL                    buildMenus();
+    /*virtual*/ bool        loadAvatar();
+    bool                    loadAvatarSelf();
+    bool                    buildSkeletonSelf(const LLAvatarSkeletonInfo *info);
+    bool                    buildMenus();
 
 /**                    Initialization
  **                                                                            **
@@ -92,16 +92,16 @@ public:
     /*virtual*/ void        requestStopMotion(LLMotion* motion);
     /*virtual*/ LLJoint*    getJoint(const std::string &name);
 
-    /*virtual*/ BOOL setVisualParamWeight(const LLVisualParam *which_param, F32 weight);
-    /*virtual*/ BOOL setVisualParamWeight(const char* param_name, F32 weight);
-    /*virtual*/ BOOL setVisualParamWeight(S32 index, F32 weight);
+    /*virtual*/ bool setVisualParamWeight(const LLVisualParam *which_param, F32 weight);
+    /*virtual*/ bool setVisualParamWeight(const char* param_name, F32 weight);
+    /*virtual*/ bool setVisualParamWeight(S32 index, F32 weight);
     /*virtual*/ void updateVisualParams();
     void writeWearablesToAvatar();
     /*virtual*/ void idleUpdateAppearanceAnimation();
 
 private:
     // helper function. Passed in param is assumed to be in avatar's parameter list.
-    BOOL setParamWeight(const LLViewerVisualParam *param, F32 weight);
+    bool setParamWeight(const LLViewerVisualParam *param, F32 weight);
 
 /********************************************************************************
  **                                                                            **
@@ -110,7 +110,8 @@ private:
 
 public:
     /*virtual*/ bool    isSelf() const { return true; }
-    /*virtual*/ BOOL    isValid() const;
+        virtual bool    isBuddy() const { return false; }
+    /*virtual*/ bool    isValid() const;
 
     //--------------------------------------------------------------------
     // Updates
@@ -149,7 +150,7 @@ private:
     // Render beam
     //--------------------------------------------------------------------
 protected:
-    BOOL        needsRenderBeam();
+    bool        needsRenderBeam();
 private:
     LLPointer<LLHUDEffectSpiral> mBeam;
     LLFrameTimer mBeamTimer;
@@ -177,32 +178,32 @@ public:
 public:
     S32                 getLocalDiscardLevel(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const;
     bool                areTexturesCurrent() const;
-    BOOL                isLocalTextureDataAvailable(const LLViewerTexLayerSet* layerset) const;
-    BOOL                isLocalTextureDataFinal(const LLViewerTexLayerSet* layerset) const;
+    bool                isLocalTextureDataAvailable(const LLViewerTexLayerSet* layerset) const;
+    bool                isLocalTextureDataFinal(const LLViewerTexLayerSet* layerset) const;
     // If you want to check all textures of a given type, pass gAgentWearables.getWearableCount() for index
-    /*virtual*/ BOOL    isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const;
-    /*virtual*/ BOOL    isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, U32 index = 0) const;
-    /*virtual*/ BOOL    isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerWearable *wearable) const;
+    /*virtual*/ bool    isTextureDefined(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const;
+    /*virtual*/ bool    isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, U32 index = 0) const;
+    /*virtual*/ bool    isTextureVisible(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerWearable *wearable) const;
 
 
     //--------------------------------------------------------------------
     // Local Textures
     //--------------------------------------------------------------------
 public:
-    BOOL                getLocalTextureGL(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerTexture** image_gl_pp, U32 index) const;
+    bool                getLocalTextureGL(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerTexture** image_gl_pp, U32 index) const;
     LLViewerFetchedTexture* getLocalTextureGL(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const;
     const LLUUID&       getLocalTextureID(LLAvatarAppearanceDefines::ETextureIndex type, U32 index) const;
     void                setLocalTextureTE(U8 te, LLViewerTexture* image, U32 index);
-    /*virtual*/ void    setLocalTexture(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerTexture* tex, BOOL baked_version_exits, U32 index);
+    /*virtual*/ void    setLocalTexture(LLAvatarAppearanceDefines::ETextureIndex type, LLViewerTexture* tex, bool baked_version_exits, U32 index);
 protected:
-    /*virtual*/ void    setBakedReady(LLAvatarAppearanceDefines::ETextureIndex type, BOOL baked_version_exists, U32 index);
-    void                localTextureLoaded(BOOL succcess, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata);
+    /*virtual*/ void    setBakedReady(LLAvatarAppearanceDefines::ETextureIndex type, bool baked_version_exists, U32 index);
+    void                localTextureLoaded(bool succcess, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata);
     void                getLocalTextureByteCount(S32* gl_byte_count) const;
-    /*virtual*/ void    addLocalTextureStats(LLAvatarAppearanceDefines::ETextureIndex i, LLViewerFetchedTexture* imagep, F32 texel_area_ratio, BOOL rendered, BOOL covered_by_baked);
+    /*virtual*/ void    addLocalTextureStats(LLAvatarAppearanceDefines::ETextureIndex i, LLViewerFetchedTexture* imagep, F32 texel_area_ratio, bool rendered, bool covered_by_baked);
     LLLocalTextureObject* getLocalTextureObject(LLAvatarAppearanceDefines::ETextureIndex i, U32 index) const;
 
 private:
-    static void         onLocalTextureLoaded(BOOL succcess, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata);
+    static void         onLocalTextureLoaded(bool succcess, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata);
 
     /*virtual*/ void    setImage(const U8 te, LLViewerTexture *imagep, const U32 index);
     /*virtual*/ LLViewerTexture* getImage(const U8 te, const U32 index) const;
@@ -240,7 +241,7 @@ public:
     void                updateComposites();
 
     const LLUUID&       grabBakedTexture(LLAvatarAppearanceDefines::EBakedTextureIndex baked_index) const;
-    BOOL                canGrabBakedTexture(LLAvatarAppearanceDefines::EBakedTextureIndex baked_index) const;
+    bool                canGrabBakedTexture(LLAvatarAppearanceDefines::EBakedTextureIndex baked_index) const;
 
 
     //--------------------------------------------------------------------
@@ -282,12 +283,12 @@ protected:
     //--------------------------------------------------------------------
 public:
     void                updateAttachmentVisibility(U32 camera_mode);
-    BOOL                isWearingAttachment(const LLUUID& inv_item_id) const;
+    bool                isWearingAttachment(const LLUUID& inv_item_id) const;
     LLViewerObject*     getWornAttachment(const LLUUID& inv_item_id);
     bool                getAttachedPointName(const LLUUID& inv_item_id, std::string& name) const;
     /*virtual*/ const LLViewerJointAttachment *attachObject(LLViewerObject *viewer_object);
-    /*virtual*/ BOOL    detachObject(LLViewerObject *viewer_object);
-    static BOOL         detachAttachmentIntoInventory(const LLUUID& item_id);
+    /*virtual*/ bool    detachObject(LLViewerObject *viewer_object);
+    static bool         detachAttachmentIntoInventory(const LLUUID& item_id);
 
     bool hasAttachmentsInTrash();
 
@@ -371,10 +372,10 @@ public:
     void                    outputRezDiagnostics() const;
     void                    outputRezTiming(const std::string& msg) const;
     void                    reportAvatarRezTime() const;
-    void                    debugBakedTextureUpload(LLAvatarAppearanceDefines::EBakedTextureIndex index, BOOL finished);
-    static void             debugOnTimingLocalTexLoaded(BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata);
+    void                    debugBakedTextureUpload(LLAvatarAppearanceDefines::EBakedTextureIndex index, bool finished);
+    static void             debugOnTimingLocalTexLoaded(bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata);
 
-    BOOL                    isAllLocalTextureDataFinal() const;
+    bool                    isAllLocalTextureDataFinal() const;
 
     const LLViewerTexLayerSet*  debugGetLayerSet(LLAvatarAppearanceDefines::EBakedTextureIndex index) const { return (LLViewerTexLayerSet*)(mBakedTextureDatas[index].mTexLayerSet); }
     const std::string       verboseDebugDumpLocalTextureDataInfo(const LLViewerTexLayerSet* layerset) const; // Lists out state of this particular baked texture layer
@@ -388,7 +389,7 @@ private:
     F32                     mDebugTimeAvatarVisible;
     F32                     mDebugTextureLoadTimes[LLAvatarAppearanceDefines::TEX_NUM_INDICES][MAX_DISCARD_LEVEL+1]; // load time for each texture at each discard level
     F32                     mDebugBakedTextureTimes[LLAvatarAppearanceDefines::BAKED_NUM_INDICES][2]; // time to start upload and finish upload of each baked texture
-    void                    debugTimingLocalTexLoaded(BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata);
+    void                    debugTimingLocalTexLoaded(bool success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, bool final, void* userdata);
 
     void                    appearanceChangeMetricsCoro(std::string url);
     bool                    mInitialMetric;
@@ -401,7 +402,7 @@ private:
 
 extern LLPointer<LLVOAvatarSelf> gAgentAvatarp;
 
-BOOL isAgentAvatarValid();
+bool isAgentAvatarValid();
 
 void selfStartPhase(const std::string& phase_name);
 void selfStopPhase(const std::string& phase_name, bool err_check = true);
diff --git a/indra/newview/llvocache.cpp b/indra/newview/llvocache.cpp
index a65e49a724..0fe2a3e714 100644
--- a/indra/newview/llvocache.cpp
+++ b/indra/newview/llvocache.cpp
@@ -40,17 +40,17 @@ F32 LLVOCacheEntry::sNearRadius = 1.0f;
 F32 LLVOCacheEntry::sRearFarRadius = 1.0f;
 F32 LLVOCacheEntry::sFrontPixelThreshold = 1.0f;
 F32 LLVOCacheEntry::sRearPixelThreshold = 1.0f;
-BOOL LLVOCachePartition::sNeedsOcclusionCheck = FALSE;
+bool LLVOCachePartition::sNeedsOcclusionCheck = false;
 
 const S32 ENTRY_HEADER_SIZE = 6 * sizeof(S32);
 const S32 MAX_ENTRY_BODY_SIZE = 10000;
 
-BOOL check_read(LLAPRFile* apr_file, void* src, S32 n_bytes)
+bool check_read(LLAPRFile* apr_file, void* src, S32 n_bytes)
 {
     return apr_file->read(src, n_bytes) == n_bytes ;
 }
 
-BOOL check_write(LLAPRFile* apr_file, void* src, S32 n_bytes)
+bool check_write(LLAPRFile* apr_file, void* src, S32 n_bytes)
 {
     return apr_file->write(src, n_bytes) == n_bytes ;
 }
@@ -165,7 +165,7 @@ LLVOCacheEntry::LLVOCacheEntry(U32 local_id, U32 crc, LLDataPackerBinaryBuffer &
     mCRCChangeCount(0),
     mState(INACTIVE),
     mSceneContrib(0.f),
-    mValid(TRUE),
+    mValid(true),
     mParentID(0),
     mBSphereRadius(-1.0f)
 {
@@ -185,7 +185,7 @@ LLVOCacheEntry::LLVOCacheEntry()
     mBuffer(NULL),
     mState(INACTIVE),
     mSceneContrib(0.f),
-    mValid(TRUE),
+    mValid(true),
     mParentID(0),
     mBSphereRadius(-1.0f)
 {
@@ -198,12 +198,12 @@ LLVOCacheEntry::LLVOCacheEntry(LLAPRFile* apr_file)
     mUpdateFlags(-1),
     mState(INACTIVE),
     mSceneContrib(0.f),
-    mValid(FALSE),
+    mValid(false),
     mParentID(0),
     mBSphereRadius(-1.0f)
 {
     S32 size = -1;
-    BOOL success;
+    bool success;
     static U8 data_buffer[ENTRY_HEADER_SIZE];
 
     mDP.assignBuffer(mBuffer, 0);
@@ -225,7 +225,7 @@ LLVOCacheEntry::LLVOCacheEntry(LLAPRFile* apr_file)
             // We won't bother seeking, because the rest of this file
             // is likely bogus, and will be tossed anyway.
             LL_WARNS() << "Bogus cache entry, size " << size << ", aborting!" << LL_ENDL;
-            success = FALSE;
+            success = false;
         }
     }
     if(success && size > 0)
@@ -339,7 +339,7 @@ void LLVOCacheEntry::setState(U32 state)
 
     if(getState() == ACTIVE)
     {
-        const S32 MIN_INTERVAL = 64 + sMinFrameRange;
+        const U32 MIN_INTERVAL = 64U + sMinFrameRange;
         U32 last_visible = getVisible();
 
         setVisible();
@@ -527,6 +527,8 @@ F32 LLVOCacheEntry::getSquaredPixelThreshold(bool is_front)
     return projection_threshold;
 }
 
+extern bool gCubeSnapshot;
+
 bool LLVOCacheEntry::isAnyVisible(const LLVector4a& camera_origin, const LLVector4a& local_camera_origin, F32 dist_threshold)
 {
 #if 0
@@ -552,7 +554,7 @@ bool LLVOCacheEntry::isAnyVisible(const LLVector4a& camera_origin, const LLVecto
     if(!vis)
     {
         S32 cur_vis = llmax(group->getAnyVisible(), (S32)getVisible());
-        vis = (cur_vis + sMinFrameRange > LLViewerOctreeEntryData::getCurrentFrame());
+        vis = (cur_vis + (S32)sMinFrameRange > LLViewerOctreeEntryData::getCurrentFrame());
     }
 
     //within the back sphere
@@ -1028,7 +1030,7 @@ S32 LLVOCachePartition::cull(LLCamera &camera, bool do_occlusion)
         }
         if(LLViewerOctreeEntryData::getCurrentFrame() % seed != mIdleHash)
         {
-            mFrontCull = FALSE;
+            mFrontCull = false;
 
             //process back objects selection
             selectBackObjects(camera, LLVOCacheEntry::getSquaredPixelThreshold(mFrontCull),
@@ -1045,7 +1047,7 @@ S32 LLVOCachePartition::cull(LLCamera &camera, bool do_occlusion)
     LLVector3 region_agent = mRegionp->getOriginAgent();
     camera.calcRegionFrustumPlanes(region_agent, gAgentCamera.mDrawDistance);
 
-    mFrontCull = TRUE;
+    mFrontCull = true;
     LLVOCacheOctreeCull culler(&camera, mRegionp, region_agent, do_occlusion && use_object_cache_occlusion,
         LLVOCacheEntry::getSquaredPixelThreshold(mFrontCull), this);
     culler.traverse(mOctree);
@@ -1058,10 +1060,10 @@ S32 LLVOCachePartition::cull(LLCamera &camera, bool do_occlusion)
 }
 #endif // LL_TEST
 
-void LLVOCachePartition::setCullHistory(BOOL has_new_object)
+void LLVOCachePartition::setCullHistory(bool has_new_object)
 {
     mCullHistory <<= 1;
-    mCullHistory |= has_new_object;
+    mCullHistory |= static_cast<U32>(has_new_object);
 }
 
 void LLVOCachePartition::addOccluders(LLViewerOctreeGroup* gp)
@@ -1100,7 +1102,7 @@ void LLVOCachePartition::processOccluders(LLCamera* camera)
 
     //safe to clear mOccludedGroups here because only the world camera accesses it.
     mOccludedGroups.clear();
-    sNeedsOcclusionCheck = FALSE;
+    sNeedsOcclusionCheck = false;
 }
 
 void LLVOCachePartition::resetOccluders()
@@ -1116,7 +1118,7 @@ void LLVOCachePartition::resetOccluders()
         group->clearOcclusionState(LLOcclusionCullingGroup::ACTIVE_OCCLUSION);
     }
     mOccludedGroups.clear();
-    sNeedsOcclusionCheck = FALSE;
+    sNeedsOcclusionCheck = false;
 }
 
 void LLVOCachePartition::removeOccluder(LLVOCacheGroup* group)
@@ -1300,7 +1302,7 @@ void LLVOCache::removeEntry(HeaderEntryInfo* entry)
         removeFromCache(entry);
         delete entry;
 
-        mNumEntries = mHandleEntryMap.size() ;
+        mNumEntries = static_cast<U32>(mHandleEntryMap.size());
     }
 }
 
@@ -1485,7 +1487,7 @@ void LLVOCache::writeCacheHeader()
             success = check_write(&apr_file, (void*)*iter, sizeof(HeaderEntryInfo));
         }
 
-        mNumEntries = mHeaderEntryQueue.size() ;
+        mNumEntries = static_cast<U32>(mHeaderEntryQueue.size());
         if(success && mNumEntries < MAX_NUM_OBJECT_ENTRIES)
         {
             HeaderEntryInfo* entry = new HeaderEntryInfo() ;
@@ -1503,12 +1505,12 @@ void LLVOCache::writeCacheHeader()
     if(!success)
     {
         clearCacheInMemory() ;
-        mReadOnly = TRUE ; //disable the cache.
+        mReadOnly = true ; //disable the cache.
     }
     return ;
 }
 
-BOOL LLVOCache::updateEntry(const HeaderEntryInfo* entry)
+bool LLVOCache::updateEntry(const HeaderEntryInfo* entry)
 {
     LLAPRFile apr_file(mHeaderFileName, APR_WRITE|APR_BINARY, mLocalAPRFilePoolp);
     apr_file.seek(APR_SET, entry->mIndex * sizeof(HeaderEntryInfo) + sizeof(HeaderMetaInfo)) ;
@@ -1729,10 +1731,10 @@ void LLVOCache::purgeEntries(U32 size)
         removeFromCache(entry) ; // This now handles removing extras cache where appropriate.
         delete entry;
     }
-    mNumEntries = mHandleEntryMap.size() ;
+    mNumEntries = static_cast<U32>(mHandleEntryMap.size());
 }
 
-void LLVOCache::writeToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry::vocache_entry_map_t& cache_entry_map, BOOL dirty_cache, bool removal_enabled)
+void LLVOCache::writeToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry::vocache_entry_map_t& cache_entry_map, bool dirty_cache, bool removal_enabled)
 {
     std::string filename;
     getObjectCacheFilename(handle, filename);
@@ -1801,7 +1803,7 @@ void LLVOCache::writeToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry:
 
         if(success)
         {
-            S32 num_entries = cache_entry_map.size(); // if removal is enabled num_entries might be wrong
+            S32 num_entries = static_cast<S32>(cache_entry_map.size()); // if removal is enabled num_entries might be wrong
             success = check_write(&apr_file, &num_entries, sizeof(S32));
             if (success)
             {
@@ -1876,17 +1878,17 @@ void LLVOCache::removeGenericExtrasForHandle(U64 handle)
     auto* entry = mHandleEntryMap[handle];
     if (entry)
     {
+        LL_WARNS("GLTF", "VOCache") << "Removing generic extras for handle " << entry->mHandle << "Filename: " << getObjectCacheExtrasFilename(handle) << LL_ENDL;
         removeEntry(entry);
     }
     else
     {
         //shouldn't happen, but if it does, we should remove the extras file since it's orphaned
-        LL_WARNS("GLTF", "VOCache") << "Removing generic extras for handle " << entry->mHandle << "Filename: " << getObjectCacheExtrasFilename(handle) << LL_ENDL;
-        LLFile::remove(getObjectCacheExtrasFilename(entry->mHandle));
+        LLFile::remove(getObjectCacheExtrasFilename(handle));
     }
 }
 
-void LLVOCache::writeGenericExtrasToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry::vocache_gltf_overrides_map_t& cache_extras_entry_map, BOOL dirty_cache, bool removal_enabled)
+void LLVOCache::writeGenericExtrasToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry::vocache_gltf_overrides_map_t& cache_extras_entry_map, bool dirty_cache, bool removal_enabled)
 {
     if(!mEnabled)
     {
@@ -1901,9 +1903,7 @@ void LLVOCache::writeGenericExtrasToCache(U64 handle, const LLUUID& id, const LL
         return;
     }
 
-    // <FS:Beq> FIRE-33808 - Material Override Cache causes long delays
     std::string filename = getObjectCacheExtrasFilename(handle);
-    // </FS:Beq>
     llofstream out(filename, std::ios::out | std::ios::binary);
     if(!out.good())
     {
@@ -1936,9 +1936,8 @@ void LLVOCache::writeGenericExtrasToCache(U64 handle, const LLUUID& id, const LL
     LLViewerRegion* pRegion = LLWorld::getInstance()->getRegionFromHandle(handle);
 
     U32 num_entries = 0;
-    U32 inmem_entries = 0;
     U32 skipped = 0;
-    inmem_entries = cache_extras_entry_map.size();
+    size_t inmem_entries = cache_extras_entry_map.size();
     for (auto [local_id, entry] : cache_extras_entry_map)
     {
         // Only write out GLTFOverrides that we can actually apply again on import.
diff --git a/indra/newview/llvocache.h b/indra/newview/llvocache.h
index b2578085d8..9679a20ae0 100644
--- a/indra/newview/llvocache.h
+++ b/indra/newview/llvocache.h
@@ -140,14 +140,14 @@ public:
     void removeChild(LLVOCacheEntry* entry);
     void removeAllChildren();
     LLVOCacheEntry* getChild(); //remove the first child, and return it.
-    S32  getNumOfChildren() const  {return mChildrenList.size();}
+    S32  getNumOfChildren() const { return static_cast<S32>(mChildrenList.size()); }
 
     void setBoundingInfo(const LLVector3& pos, const LLVector3& scale); //called from processing object update message
     void updateParentBoundingInfo();
     void saveBoundingSphere();
 
-    void setValid(BOOL valid = TRUE) {mValid = valid;}
-    BOOL isValid() const {return mValid;}
+    void setValid(bool valid = true) {mValid = valid;}
+    bool isValid() const {return mValid;}
 
     void setUpdateFlags(U32 flags) {mUpdateFlags = flags;}
     U32  getUpdateFlags() const    {return mUpdateFlags;}
@@ -181,7 +181,7 @@ protected:
     U32                         mState; //high 16 bits reserved for special use.
     vocache_entry_set_t         mChildrenList; //children entries in a linked set.
 
-    BOOL                        mValid; //if set, this entry is valid, otherwise it is invalid and will be removed.
+    bool                        mValid; //if set, this entry is valid, otherwise it is invalid and will be removed.
 
     LLVector4a                  mBSphereCenter; //bounding sphere center
     F32                         mBSphereRadius; //bounding sphere radius
@@ -220,7 +220,7 @@ public:
     void processOccluders(LLCamera* camera);
     void removeOccluder(LLVOCacheGroup* group);
 
-    void setCullHistory(BOOL has_new_object);
+    void setCullHistory(bool has_new_object);
 
     bool isFrontCull() const {return mFrontCull;}
 
@@ -228,10 +228,10 @@ private:
     void selectBackObjects(LLCamera &camera, F32 projection_area_cutoff, bool use_occlusion); //select objects behind camera.
 
 public:
-    static BOOL sNeedsOcclusionCheck;
+    static bool sNeedsOcclusionCheck;
 
 private:
-    BOOL  mFrontCull; //the view frustum cull if set, otherwise is back sphere cull.
+    bool  mFrontCull; //the view frustum cull if set, otherwise is back sphere cull.
     U32   mCullHistory;
     U32   mCulledTime[LLViewerCamera::NUM_CAMERAS];
     std::set<LLVOCacheGroup*> mOccludedGroups;
@@ -288,8 +288,8 @@ public:
     bool readFromCache(U64 handle, const LLUUID& id, LLVOCacheEntry::vocache_entry_map_t& cache_entry_map) ;
     void readGenericExtrasFromCache(U64 handle, const LLUUID& id, LLVOCacheEntry::vocache_gltf_overrides_map_t& cache_extras_entry_map, const LLVOCacheEntry::vocache_entry_map_t& cache_entry_map);
 
-    void writeToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry::vocache_entry_map_t& cache_entry_map, BOOL dirty_cache, bool removal_enabled);
-    void writeGenericExtrasToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry::vocache_gltf_overrides_map_t& cache_extras_entry_map, BOOL dirty_cache, bool removal_enabled);
+    void writeToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry::vocache_entry_map_t& cache_entry_map, bool dirty_cache, bool removal_enabled);
+    void writeGenericExtrasToCache(U64 handle, const LLUUID& id, const LLVOCacheEntry::vocache_gltf_overrides_map_t& cache_extras_entry_map, bool dirty_cache, bool removal_enabled);
     void removeEntry(U64 handle) ;
     void removeGenericExtrasForHandle(U64 handle);
 
@@ -308,7 +308,7 @@ private:
     void removeCache() ;
     void removeEntry(HeaderEntryInfo* entry) ;
     void purgeEntries(U32 size);
-    BOOL updateEntry(const HeaderEntryInfo* entry);
+    bool updateEntry(const HeaderEntryInfo* entry);
 
 private:
     bool                 mEnabled;
diff --git a/indra/newview/llvograss.cpp b/indra/newview/llvograss.cpp
index a92244b7da..e04bdbf1d9 100644
--- a/indra/newview/llvograss.cpp
+++ b/indra/newview/llvograss.cpp
@@ -73,7 +73,7 @@ LLVOGrass::LLVOGrass(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regi
     mLastPatchUpdateTime = 0;
     mGrassVel.clearVec();
     mGrassBend.clearVec();
-    mbCanSelect          = TRUE;
+    mbCanSelect          = true;
 
     mBladeWindAngle      = 35.f;
     mBWAOverlap          = 2.f;
@@ -99,7 +99,7 @@ void LLVOGrass::updateSpecies()
         SpeciesMap::const_iterator it = sSpeciesTable.begin();
         mSpecies = (*it).first;
     }
-    setTEImage(0, LLViewerTextureManager::getFetchedTexture(sSpeciesTable[mSpecies]->mTextureID, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE));
+    setTEImage(0, LLViewerTextureManager::getFetchedTexture(sSpeciesTable[mSpecies]->mTextureID, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE));
 }
 
 
@@ -135,7 +135,7 @@ void LLVOGrass::initClass()
         F32 F32_val;
         LLUUID id;
 
-        BOOL success = TRUE;
+        bool success{ true };
 
         S32 species;
         static LLStdStringHandle species_id_string = LLXmlTree::addAttributeString("species_id");
@@ -188,7 +188,7 @@ void LLVOGrass::initClass()
         }
     }
 
-    BOOL have_all_grass = TRUE;
+    bool have_all_grass{ true };
     std::string err;
 
     for (S32 i=0;i<sMaxGrassSpecies;++i)
@@ -196,7 +196,7 @@ void LLVOGrass::initClass()
         if (!sSpeciesTable.count(i))
         {
             err.append(llformat(" %d",i));
-            have_all_grass = FALSE;
+            have_all_grass = false;
         }
     }
 
@@ -270,9 +270,9 @@ U32 LLVOGrass::processUpdateMessage(LLMessageSystem *mesgsys,
     return retval;
 }
 
-BOOL LLVOGrass::isActive() const
+bool LLVOGrass::isActive() const
 {
-    return TRUE;
+    return true;
 }
 
 void LLVOGrass::idleUpdate(LLAgent &agent, const F64 &time)
@@ -333,11 +333,11 @@ void LLVOGrass::updateTextures()
     }
 }
 
-BOOL LLVOGrass::updateLOD()
+bool LLVOGrass::updateLOD()
 {
     if (mDrawable->getNumFaces() <= 0)
     {
-        return FALSE;
+        return false;
     }
 
     LLFace* face = mDrawable->getFace(0);
@@ -350,7 +350,7 @@ BOOL LLVOGrass::updateLOD()
             face->setSize(0, 0);
             gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_ALL);
         }
-        return TRUE ;
+        return true ;
     }
     if(!mNumBlades)
     {
@@ -387,10 +387,10 @@ BOOL LLVOGrass::updateLOD()
             face->setSize(mNumBlades*8, mNumBlades*12);
         }
         gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_ALL);
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 LLDrawable* LLVOGrass::createDrawable(LLPipeline *pipeline)
@@ -403,7 +403,7 @@ LLDrawable* LLVOGrass::createDrawable(LLPipeline *pipeline)
 
 static LLTrace::BlockTimerStatHandle FTM_UPDATE_GRASS("Update Grass");
 
-BOOL LLVOGrass::updateGeometry(LLDrawable *drawable)
+bool LLVOGrass::updateGeometry(LLDrawable *drawable)
 {
     LL_RECORD_BLOCK_TIME(FTM_UPDATE_GRASS);
 
@@ -424,7 +424,7 @@ BOOL LLVOGrass::updateGeometry(LLDrawable *drawable)
     {
         plantBlades();
     }
-    return TRUE;
+    return true;
 }
 
 void LLVOGrass::plantBlades()
@@ -593,12 +593,12 @@ U32 LLVOGrass::getPartitionType() const
 }
 
 LLGrassPartition::LLGrassPartition(LLViewerRegion* regionp)
-: LLSpatialPartition(LLDrawPoolAlpha::VERTEX_DATA_MASK | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, regionp)
+: LLSpatialPartition(LLDrawPoolAlpha::VERTEX_DATA_MASK | LLVertexBuffer::MAP_TEXTURE_INDEX, true, regionp)
 {
     mDrawableType = LLPipeline::RENDER_TYPE_GRASS;
     mPartitionType = LLViewerRegion::PARTITION_GRASS;
     mLODPeriod = 16;
-    mDepthMask = TRUE;
+    mDepthMask = true;
     mSlopRatio = 0.1f;
     mRenderPass = LLRenderPass::PASS_GRASS;
 }
@@ -696,7 +696,7 @@ void LLGrassPartition::getGeometry(LLSpatialGroup* group)
         vertex_count += facep->getGeomCount();
         index_count += facep->getIndicesCount();
 
-        S32 idx = draw_vec.size()-1;
+        S32 idx = static_cast<S32>(draw_vec.size()) - 1;
 
         bool fullbright = facep->isState(LLFace::FULLBRIGHT);
 
@@ -731,28 +731,28 @@ void LLGrassPartition::getGeometry(LLSpatialGroup* group)
 }
 
 // virtual
-void LLVOGrass::updateDrawable(BOOL force_damped)
+void LLVOGrass::updateDrawable(bool force_damped)
 {
     // Force an immediate rebuild on any update
     if (mDrawable.notNull())
     {
-        mDrawable->updateXform(TRUE);
+        mDrawable->updateXform(true);
         gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_ALL);
     }
     clearChanged(SHIFTED);
 }
 
 // virtual
-BOOL LLVOGrass::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, S32 face, BOOL pick_transparent, BOOL pick_rigged, BOOL pick_unselectable, S32 *face_hitp,
+bool LLVOGrass::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, S32 face, bool pick_transparent, bool pick_rigged, bool pick_unselectable, S32 *face_hitp,
                                       LLVector4a* intersection,LLVector2* tex_coord, LLVector4a* normal, LLVector4a* tangent)
 
 {
-    BOOL ret = FALSE;
+    bool ret = false;
     if (!mbCanSelect ||
         mDrawable->isDead() ||
         !gPipeline.hasRenderType(mDrawable->getRenderType()))
     {
-        return FALSE;
+        return false;
     }
 
     LLVector4a dir;
@@ -819,7 +819,7 @@ BOOL LLVOGrass::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
 
         F32 a,b,t;
 
-        BOOL hit = FALSE;
+        bool hit = false;
 
 
         U32 idx0 = 0,idx1 = 0,idx2 = 0;
@@ -834,24 +834,24 @@ BOOL LLVOGrass::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
 
         if (LLTriangleRayIntersect(v0a, v1a, v2a, start, dir, a, b, t))
         {
-            hit = TRUE;
+            hit = true;
             idx0 = 0; idx1 = 1; idx2 = 2;
         }
         else if (LLTriangleRayIntersect(v1a, v3a, v2a, start, dir, a, b, t))
         {
-            hit = TRUE;
+            hit = true;
             idx0 = 1; idx1 = 3; idx2 = 2;
         }
         else if (LLTriangleRayIntersect(v2a, v1a, v0a, start, dir, a, b, t))
         {
             normal1 = -normal1;
-            hit = TRUE;
+            hit = true;
             idx0 = 2; idx1 = 1; idx2 = 0;
         }
         else if (LLTriangleRayIntersect(v2a, v3a, v1a, start, dir, a, b, t))
         {
             normal1 = -normal1;
-            hit = TRUE;
+            hit = true;
             idx0 = 2; idx1 = 3; idx2 = 1;
         }
 
@@ -884,7 +884,7 @@ BOOL LLVOGrass::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
                     {
                         normal->load3(normal1.mV);
                     }
-                    ret = TRUE;
+                    ret = true;
                 }
             }
         }
diff --git a/indra/newview/llvograss.h b/indra/newview/llvograss.h
index 0d52d4b99c..f34883fa59 100644
--- a/indra/newview/llvograss.h
+++ b/indra/newview/llvograss.h
@@ -53,10 +53,10 @@ public:
     static void import(LLFILE *file, LLMessageSystem *mesgsys, const LLVector3 &pos);
     /*virtual*/ void exportFile(LLFILE *file, const LLVector3 &position);
 
-    void updateDrawable(BOOL force_damped);
+    void updateDrawable(bool force_damped);
 
     /*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
-    /*virtual*/ BOOL        updateGeometry(LLDrawable *drawable);
+    /*virtual*/ bool        updateGeometry(LLDrawable *drawable);
     /*virtual*/ void        getGeometry(S32 idx,
                                 LLStrider<LLVector4a>& verticesp,
                                 LLStrider<LLVector3>& normalsp,
@@ -67,19 +67,19 @@ public:
 
     void updateFaceSize(S32 idx) { }
     /*virtual*/ void updateTextures();
-    /*virtual*/ BOOL updateLOD();
+    /*virtual*/ bool updateLOD();
     /*virtual*/ void setPixelAreaAndAngle(LLAgent &agent); // generate accurate apparent angle and area
 
     void plantBlades();
 
-    /*virtual*/ BOOL    isActive() const; // Whether this object needs to do an idleUpdate.
+    /*virtual*/ bool    isActive() const; // Whether this object needs to do an idleUpdate.
     /*virtual*/ void idleUpdate(LLAgent &agent, const F64 &time);
 
-    /*virtual*/ BOOL lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
+    /*virtual*/ bool lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
                                           S32 face = -1,                        // which face to check, -1 = ALL_SIDES
-                                          BOOL pick_transparent = FALSE,
-                                          BOOL pick_rigged = FALSE,
-                                          BOOL pick_unselectable = TRUE,
+                                          bool pick_transparent = false,
+                                          bool pick_rigged = false,
+                                          bool pick_unselectable = true,
                                           S32* face_hit = NULL,                 // which face was hit
                                           LLVector4a* intersection = NULL,       // return the intersection point
                                           LLVector2* tex_coord = NULL,          // return the texture coordinates of the intersection point
diff --git a/indra/newview/llvoicecallhandler.cpp b/indra/newview/llvoicecallhandler.cpp
index 82a8d48f30..25b0e69436 100644
--- a/indra/newview/llvoicecallhandler.cpp
+++ b/indra/newview/llvoicecallhandler.cpp
@@ -48,7 +48,7 @@ public:
 
         //Get the ID
         LLUUID id;
-        if (!id.set( params[0], FALSE ))
+        if (!id.set( params[0], false ))
         {
             return false;
         }
diff --git a/indra/newview/llvoicechannel.cpp b/indra/newview/llvoicechannel.cpp
index 8681411a98..b95e43da8d 100644
--- a/indra/newview/llvoicechannel.cpp
+++ b/indra/newview/llvoicechannel.cpp
@@ -43,7 +43,7 @@ LLVoiceChannel* LLVoiceChannel::sCurrentVoiceChannel = NULL;
 LLVoiceChannel* LLVoiceChannel::sSuspendedVoiceChannel = NULL;
 LLVoiceChannel::channel_changed_signal_t LLVoiceChannel::sCurrentVoiceChannelChangedSignal;
 
-BOOL LLVoiceChannel::sSuspended = FALSE;
+bool LLVoiceChannel::sSuspended = false;
 
 //
 // Constants
@@ -58,7 +58,7 @@ LLVoiceChannel::LLVoiceChannel(const LLUUID& session_id, const std::string& sess
     mState(STATE_NO_CHANNEL_INFO),
     mSessionName(session_name),
     mCallDirection(OUTGOING_CALL),
-    mIgnoreNextSessionLeave(FALSE),
+    mIgnoreNextSessionLeave(false),
     mCallEndedByAgent(false)
 {
     mNotifyArgs["VOICE_CHANNEL_NAME"] = mSessionName;
@@ -187,13 +187,13 @@ void LLVoiceChannel::handleError(EStatusType type)
     setState(STATE_ERROR);
 }
 
-BOOL LLVoiceChannel::isActive()
+bool LLVoiceChannel::isActive()
 {
     // only considered active when currently bound channel matches what our channel
     return callStarted() && LLVoiceClient::getInstance()->isCurrentChannel(mChannelInfo);
 }
 
-BOOL LLVoiceChannel::callStarted()
+bool LLVoiceChannel::callStarted()
 {
     return mState >= STATE_CALL_STARTED;
 }
@@ -203,7 +203,7 @@ void LLVoiceChannel::deactivate()
     if (mState >= STATE_RINGING)
     {
         // ignore session leave event
-        mIgnoreNextSessionLeave = TRUE;
+        mIgnoreNextSessionLeave = true;
     }
 
     if (callStarted())
@@ -344,7 +344,7 @@ void LLVoiceChannel::suspend()
     if (!sSuspended)
     {
         sSuspendedVoiceChannel = sCurrentVoiceChannel;
-        sSuspended = TRUE;
+        sSuspended = true;
     }
 }
 
@@ -364,7 +364,7 @@ void LLVoiceChannel::resume()
                 LLVoiceChannelProximal::getInstance()->activate();
             }
         }
-        sSuspended = FALSE;
+        sSuspended = false;
     }
 }
 
@@ -391,7 +391,7 @@ LLVoiceChannelGroup::LLVoiceChannelGroup(const LLUUID      &session_id,
                                          mIsP2P(is_p2p)
 {
     mRetries = DEFAULT_RETRIES_COUNT;
-    mIsRetrying = FALSE;
+    mIsRetrying = false;
 }
 
 void LLVoiceChannelGroup::deactivate()
@@ -513,7 +513,7 @@ void LLVoiceChannelGroup::handleStatusChange(EStatusType type)
     {
     case STATUS_JOINED:
         mRetries = 3;
-        mIsRetrying = FALSE;
+        mIsRetrying = false;
     default:
         break;
     }
@@ -537,8 +537,8 @@ void LLVoiceChannelGroup::handleError(EStatusType status)
         if ( mRetries > 0 )
         {
             mRetries--;
-            mIsRetrying = TRUE;
-            mIgnoreNextSessionLeave = TRUE;
+            mIsRetrying = true;
+            mIgnoreNextSessionLeave = true;
 
             requestChannelInfo();
             return;
@@ -547,7 +547,7 @@ void LLVoiceChannelGroup::handleError(EStatusType status)
         {
             notify = "VoiceChannelJoinFailed";
             mRetries = DEFAULT_RETRIES_COUNT;
-            mIsRetrying = FALSE;
+            mIsRetrying = false;
         }
 
         break;
@@ -662,7 +662,7 @@ LLVoiceChannelProximal::LLVoiceChannelProximal() :
 {
 }
 
-BOOL LLVoiceChannelProximal::isActive()
+bool LLVoiceChannelProximal::isActive()
 {
     return callStarted() && LLVoiceClient::getInstance()->inProximalChannel();
 }
@@ -765,7 +765,7 @@ LLVoiceChannelP2P::LLVoiceChannelP2P(const LLUUID      &session_id,
                                     LLVoiceP2POutgoingCallInterface* outgoing_call_interface) :
     LLVoiceChannelGroup(session_id, session_name, true),
     mOtherUserID(other_user_id),
-    mReceivedCall(FALSE),
+    mReceivedCall(false),
     mOutgoingCallInterface(outgoing_call_interface)
 {
 }
@@ -793,12 +793,12 @@ void LLVoiceChannelP2P::handleStatusChange(EStatusType type)
             }
             deactivate();
         }
-        mIgnoreNextSessionLeave = FALSE;
+        mIgnoreNextSessionLeave = false;
         return;
     case STATUS_JOINING:
         // because we join session we expect to process session leave event in the future. EXT-7371
         // may be this should be done in the LLVoiceChannel::handleStatusChange.
-        mIgnoreNextSessionLeave = FALSE;
+        mIgnoreNextSessionLeave = false;
         break;
 
     default:
@@ -836,7 +836,7 @@ void LLVoiceChannelP2P::activate()
         // no session handle yet, we're starting the call
         if (mIncomingCallInterface == nullptr)
         {
-            mReceivedCall = FALSE;
+            mReceivedCall = false;
             mOutgoingCallInterface->callUser(mOtherUserID);
         }
         // otherwise answering the call
@@ -887,7 +887,7 @@ void LLVoiceChannelP2P::requestChannelInfo()
 void LLVoiceChannelP2P::setChannelInfo(const LLSD& channel_info)
 {
     mChannelInfo        = channel_info;
-    BOOL needs_activate = FALSE;
+    bool needs_activate = false;
     if (callStarted())
     {
         // defer to lower agent id when already active
@@ -895,7 +895,7 @@ void LLVoiceChannelP2P::setChannelInfo(const LLSD& channel_info)
         {
             // pretend we haven't started the call yet, so we can connect to this session instead
             deactivate();
-            needs_activate = TRUE;
+            needs_activate = true;
         }
         else
         {
@@ -906,7 +906,7 @@ void LLVoiceChannelP2P::setChannelInfo(const LLSD& channel_info)
         }
     }
 
-    mReceivedCall = TRUE;
+    mReceivedCall = true;
     if (channel_info.isDefined() && channel_info.isMap())
     {
         mIncomingCallInterface = LLVoiceClient::getInstance()->getIncomingCallInterface(channel_info);
diff --git a/indra/newview/llvoicechannel.h b/indra/newview/llvoicechannel.h
index eb16cc22ba..6af1bd57a3 100644
--- a/indra/newview/llvoicechannel.h
+++ b/indra/newview/llvoicechannel.h
@@ -74,8 +74,8 @@ public:
     virtual void activate();
     virtual void setChannelInfo(const LLSD &channelInfo);
     virtual void requestChannelInfo();
-    virtual BOOL isActive();
-    virtual BOOL callStarted();
+    virtual bool isActive();
+    virtual bool callStarted();
 
     // Session name is a UI label used for feedback about which person,
     // group, or phone number you are talking to
@@ -120,7 +120,7 @@ public:
     LLSD        mChannelInfo;
     // true if call was ended by agent
     bool mCallEndedByAgent;
-    bool mIgnoreNextSessionLeave;
+    bool        mIgnoreNextSessionLeave;
     LLHandle<LLPanel> mLoginNotificationHandle;
 
     typedef std::map<LLUUID, LLVoiceChannel*> voice_channel_map_t;
@@ -129,7 +129,7 @@ public:
     static LLVoiceChannel* sProximalVoiceChannel;
     static LLVoiceChannel* sCurrentVoiceChannel;
     static LLVoiceChannel* sSuspendedVoiceChannel;
-    static BOOL sSuspended;
+    static bool sSuspended;
 
 private:
     state_changed_signal_t mStateChangedCallback;
@@ -158,19 +158,19 @@ private:
     void voiceCallCapCoro(std::string url);
 
     U32 mRetries;
-    BOOL mIsRetrying;
+    bool mIsRetrying;
     bool mIsP2P;
 };
 
 class LLVoiceChannelProximal : public LLVoiceChannel, public LLSingleton<LLVoiceChannelProximal>
 {
-    LLSINGLETON_C11(LLVoiceChannelProximal);
+    LLSINGLETON(LLVoiceChannelProximal);
   public:
 
     void onChange(EStatusType status, const LLSD &channelInfo, bool proximal) override;
     void handleStatusChange(EStatusType status) override;
     void handleError(EStatusType status) override;
-    BOOL isActive() override;
+    bool isActive() override;
     void activate() override;
     void deactivate() override;
 };
@@ -201,7 +201,7 @@ private:
     **/
     void addToTheRecentPeopleList();
     LLUUID      mOtherUserID;
-    BOOL        mReceivedCall;
+    bool        mReceivedCall;
     LLVoiceP2POutgoingCallInterface *mOutgoingCallInterface;
     LLVoiceP2PIncomingCallInterfacePtr mIncomingCallInterface;
 };
diff --git a/indra/newview/llvoiceclient.cpp b/indra/newview/llvoiceclient.cpp
index 490c7174c5..4b299a51f5 100644
--- a/indra/newview/llvoiceclient.cpp
+++ b/indra/newview/llvoiceclient.cpp
@@ -37,6 +37,7 @@
 #include "llui.h"
 #include "llkeyboard.h"
 #include "llagent.h"
+#include "lltrans.h"
 #include "lluiusage.h"
 
 const F32 LLVoiceClient::OVERDRIVEN_POWER_LEVEL = 0.7f;
@@ -423,16 +424,16 @@ bool LLVoiceClient::isParticipant(const LLUUID &speaker_id)
 //--------------------------------------------------
 // text chat
 
-BOOL LLVoiceClient::isSessionTextIMPossible(const LLUUID& id)
+bool LLVoiceClient::isSessionTextIMPossible(const LLUUID& id)
 {
     // all sessions can do TextIM, as we no longer support PSTN
-    return TRUE;
+    return true;
 }
 
-BOOL LLVoiceClient::isSessionCallBackPossible(const LLUUID& id)
+bool LLVoiceClient::isSessionCallBackPossible(const LLUUID& id)
 {
     // we don't support PSTN calls anymore.  (did we ever?)
-    return TRUE;
+    return true;
 }
 
 //----------------------------------------------
@@ -597,7 +598,11 @@ bool LLVoiceClient::voiceEnabled()
     bool enabled = enable_voice_chat && !cmd_line_disable_voice && !gNonInteractive;
     if (enabled && !mVoiceEffectSupportNotified && getVoiceEffectEnabled() && !getVoiceEffectDefault().isNull())
     {
-        LLNotificationsUtil::add("VoiceEffectsNotSupported", LLSD(), LLSD(), &LLVoiceClient::onVoiceEffectsNotSupported);
+        static const LLSD args = llsd::map(
+            "FAQ_URL", LLTrans::getString("no_voice_morphing_faq_url")
+        );
+
+        LLNotificationsUtil::add("VoiceEffectsNotSupported", args, LLSD(), &LLVoiceClient::onVoiceEffectsNotSupported);
         mVoiceEffectSupportNotified = true;
     }
     return enabled;
@@ -713,9 +718,9 @@ void LLVoiceClient::toggleUserPTTState(void)
 //-------------------------------------------
 // nearby speaker accessors
 
-BOOL LLVoiceClient::getVoiceEnabled(const LLUUID& id)
+bool LLVoiceClient::getVoiceEnabled(const LLUUID& id)
 {
-    return isParticipant(id) ? TRUE : FALSE;
+    return isParticipant(id);
 }
 
 std::string LLVoiceClient::getDisplayName(const LLUUID& id)
@@ -734,23 +739,23 @@ bool LLVoiceClient::isVoiceWorking() const
            LLWebRTCVoiceClient::getInstance()->isVoiceWorking();
 }
 
-BOOL LLVoiceClient::isParticipantAvatar(const LLUUID& id)
+bool LLVoiceClient::isParticipantAvatar(const LLUUID& id)
 {
-    return TRUE;
+    return true;
 }
 
-BOOL LLVoiceClient::isOnlineSIP(const LLUUID& id)
+bool LLVoiceClient::isOnlineSIP(const LLUUID& id)
 {
-    return FALSE;
+    return false;
 }
 
-BOOL LLVoiceClient::getIsSpeaking(const LLUUID& id)
+bool LLVoiceClient::getIsSpeaking(const LLUUID& id)
 {
     return LLWebRTCVoiceClient::getInstance()->getIsSpeaking(id) ||
            LLVivoxVoiceClient::getInstance()->getIsSpeaking(id);
 }
 
-BOOL LLVoiceClient::getIsModeratorMuted(const LLUUID& id)
+bool LLVoiceClient::getIsModeratorMuted(const LLUUID& id)
 {
     // don't bother worrying about p2p calls, as
     // p2p calls don't have mute.
@@ -764,7 +769,7 @@ F32 LLVoiceClient::getCurrentPower(const LLUUID& id)
                      LLWebRTCVoiceClient::getInstance()->getCurrentPower(id));
 }
 
-BOOL LLVoiceClient::getOnMuteList(const LLUUID& id)
+bool LLVoiceClient::getOnMuteList(const LLUUID& id)
 {
     // don't bother worrying about p2p calls, as
     // p2p calls don't have mute.
diff --git a/indra/newview/llvoiceclient.h b/indra/newview/llvoiceclient.h
index d603125759..9ae18b315c 100644
--- a/indra/newview/llvoiceclient.h
+++ b/indra/newview/llvoiceclient.h
@@ -250,9 +250,9 @@ public:
     /// @name nearby speaker accessors
     //@{
     virtual std::string getDisplayName(const LLUUID& id)=0;
-    virtual BOOL isParticipantAvatar(const LLUUID &id)=0;
-    virtual BOOL getIsSpeaking(const LLUUID& id)=0;
-    virtual BOOL getIsModeratorMuted(const LLUUID& id)=0;
+    virtual bool isParticipantAvatar(const LLUUID &id)=0;
+    virtual bool getIsSpeaking(const LLUUID& id)=0;
+    virtual bool getIsModeratorMuted(const LLUUID& id)=0;
     virtual F32 getCurrentPower(const LLUUID& id)=0;        // "power" is related to "amplitude" in a defined way.  I'm just not sure what the formula is...
     virtual F32 getUserVolume(const LLUUID& id)=0;
     virtual void setUserVolume(const LLUUID& id, F32 volume)=0; // set's volume for specified agent, from 0-1 (where .5 is nominal)
@@ -261,9 +261,9 @@ public:
     //////////////////////////
     /// @name text chat
     //@{
-    virtual BOOL isSessionTextIMPossible(const LLUUID& id)=0;
-    virtual BOOL isSessionCallBackPossible(const LLUUID& id)=0;
-    //virtual BOOL sendTextMessage(const LLUUID& participant_id, const std::string& message)=0;
+    virtual bool isSessionTextIMPossible(const LLUUID& id)=0;
+    virtual bool isSessionCallBackPossible(const LLUUID& id)=0;
+    //virtual bool sendTextMessage(const LLUUID& participant_id, const std::string& message)=0;
     //@}
 
     // authorize the user
@@ -451,14 +451,14 @@ public:
 
     /////////////////////////////
     // Accessors for data related to nearby speakers
-    BOOL getVoiceEnabled(const LLUUID& id);     // true if we've received data for this avatar
+    bool getVoiceEnabled(const LLUUID& id);     // true if we've received data for this avatar
     std::string getDisplayName(const LLUUID& id);
-    BOOL isOnlineSIP(const LLUUID &id);
-    BOOL isParticipantAvatar(const LLUUID &id);
-    BOOL getIsSpeaking(const LLUUID& id);
-    BOOL getIsModeratorMuted(const LLUUID& id);
+    bool isOnlineSIP(const LLUUID &id);
+    bool isParticipantAvatar(const LLUUID &id);
+    bool getIsSpeaking(const LLUUID& id);
+    bool getIsModeratorMuted(const LLUUID& id);
     F32 getCurrentPower(const LLUUID& id);      // "power" is related to "amplitude" in a defined way.  I'm just not sure what the formula is...
-    BOOL getOnMuteList(const LLUUID& id);
+    bool getOnMuteList(const LLUUID& id);
     F32 getUserVolume(const LLUUID& id);
 
     /////////////////////////////
@@ -468,9 +468,9 @@ public:
     //////////////////////////
     /// @name text chat
     //@{
-    BOOL isSessionTextIMPossible(const LLUUID& id);
-    BOOL isSessionCallBackPossible(const LLUUID& id);
-    //BOOL sendTextMessage(const LLUUID& participant_id, const std::string& message) const {return true;} ;
+    bool isSessionTextIMPossible(const LLUUID& id);
+    bool isSessionCallBackPossible(const LLUUID& id);
+    //bool sendTextMessage(const LLUUID& participant_id, const std::string& message) const {return true;} ;
     //@}
 
     void setSpatialVoiceModule(const std::string& voice_server_type);
@@ -540,7 +540,7 @@ protected:
  **/
 class LLSpeakerVolumeStorage : public LLSingleton<LLSpeakerVolumeStorage>
 {
-    LLSINGLETON_C11(LLSpeakerVolumeStorage);
+    LLSINGLETON(LLSpeakerVolumeStorage);
     ~LLSpeakerVolumeStorage();
     LOG_CLASS(LLSpeakerVolumeStorage);
 
diff --git a/indra/newview/llvoicevisualizer.cpp b/indra/newview/llvoicevisualizer.cpp
index 0374111972..305fd77126 100644
--- a/indra/newview/llvoicevisualizer.cpp
+++ b/indra/newview/llvoicevisualizer.cpp
@@ -77,7 +77,7 @@ const LLVector3 WORLD_UPWARD_DIRECTION = LLVector3( 0.0f, 0.0f, 1.0f ); // Z is
 // Initialize the statics
 //------------------------------------------------------------------
 bool LLVoiceVisualizer::sPrefsInitialized   = false;
-BOOL LLVoiceVisualizer::sLipSyncEnabled     = FALSE;
+bool LLVoiceVisualizer::sLipSyncEnabled     = false;
 F32* LLVoiceVisualizer::sOoh                = NULL;
 F32* LLVoiceVisualizer::sAah                = NULL;
 U32  LLVoiceVisualizer::sOohs               = 0;
@@ -125,7 +125,7 @@ LLVoiceVisualizer::LLVoiceVisualizer( const U8 type )
     for (int i=0; i<NUM_VOICE_SYMBOL_WAVES; i++)
     {
         mSoundSymbol.mWaveFadeOutStartTime  [i] = mCurrentTime;
-        mSoundSymbol.mTexture               [i] = LLViewerTextureManager::getFetchedTextureFromFile(sound_level_img[i], FTT_LOCAL_FILE, FALSE, LLGLTexture::BOOST_UI);
+        mSoundSymbol.mTexture               [i] = LLViewerTextureManager::getFetchedTextureFromFile(sound_level_img[i], FTT_LOCAL_FILE, false, LLGLTexture::BOOST_UI);
         mSoundSymbol.mWaveActive            [i] = false;
         mSoundSymbol.mWaveOpacity           [i] = 1.0f;
         mSoundSymbol.mWaveExpansion         [i] = 1.0f;
@@ -248,7 +248,7 @@ void LLVoiceVisualizer::lipStringToF32s ( std::string& in_string, F32*& out_F32s
 {
     delete[] out_F32s;  // get rid of the current array
 
-    count_F32s = in_string.length();
+    count_F32s = static_cast<U32>(in_string.length());
     if (count_F32s == 0)
     {
         // we don't like zero length arrays
@@ -284,7 +284,7 @@ void LLVoiceVisualizer::lipStringToF32s ( std::string& in_string, F32*& out_F32s
 //--------------------------------------------------------------------------
 void LLVoiceVisualizer::lipSyncOohAah( F32& ooh, F32& aah )
 {
-    if( ( sLipSyncEnabled == TRUE ) && mCurrentlySpeaking )
+    if (sLipSyncEnabled && mCurrentlySpeaking)
     {
         U32 transfer_index = (U32) (sOohPowerTransfersf * mSpeakingAmplitude);
         if (transfer_index >= sOohPowerTransfers)
diff --git a/indra/newview/llvoicevisualizer.h b/indra/newview/llvoicevisualizer.h
index 403b3a8819..a44f60bd16 100644
--- a/indra/newview/llvoicevisualizer.h
+++ b/indra/newview/llvoicevisualizer.h
@@ -135,7 +135,7 @@ class LLVoiceVisualizer : public LLHUDEffect
     // private static members
     //---------------------------------------------------
 
-        static BOOL   sLipSyncEnabled;       // 0 disabled, 1 babble loop
+        static bool   sLipSyncEnabled;       // 0 disabled, 1 babble loop
         static bool   sPrefsInitialized;     // the first instance will initialize the static members
         static F32*   sOoh;                  // the babble loop of amplitudes for the ooh morph
         static F32*   sAah;                  // the babble loop of amplitudes for the ooh morph
diff --git a/indra/newview/llvoicevivox.cpp b/indra/newview/llvoicevivox.cpp
index 673a760a81..ab1a3056fa 100644
--- a/indra/newview/llvoicevivox.cpp
+++ b/indra/newview/llvoicevivox.cpp
@@ -282,6 +282,8 @@ bool LLVivoxVoiceClient::sConnected = false;
 LLPumpIO *LLVivoxVoiceClient::sPump = nullptr;
 
 LLVivoxVoiceClient::LLVivoxVoiceClient() :
+    mWriteOffset(0),
+    mHidden(true),
     mSessionTerminateRequested(false),
     mRelogRequested(false),
     mTerminateDaemon(false),
@@ -1932,7 +1934,7 @@ bool LLVivoxVoiceClient::terminateAudioSession(bool wait)
                        << " VoiceEnabled " << mVoiceEnabled
                        << " IsInitialized " << mIsInitialized
                        << " RelogRequested " << mRelogRequested
-                       << " ShuttingDown " << (sShuttingDown ? "TRUE" : "FALSE")
+                       << " ShuttingDown " << (sShuttingDown ? "True" : "False")
                        << " returning " << status
                        << LL_ENDL;
     return status;
@@ -5030,16 +5032,16 @@ bool LLVivoxVoiceClient::isVoiceWorking() const
 
 // Returns true if the indicated participant in the current audio session is really an SL avatar.
 // Currently this will be false only for PSTN callers into group chats, and PSTN p2p calls.
-BOOL LLVivoxVoiceClient::isParticipantAvatar(const LLUUID &id)
+bool LLVivoxVoiceClient::isParticipantAvatar(const LLUUID &id)
 {
-    BOOL result = TRUE;
+    bool result = true;
     sessionStatePtr_t session(findSession(id));
 
     if(session)
     {
         // this is a p2p session with the indicated caller, or the session with the specified UUID.
         if(session->mSynthesizedCallerID)
-            result = FALSE;
+            result = false;
     }
     else
     {
@@ -5059,9 +5061,9 @@ BOOL LLVivoxVoiceClient::isParticipantAvatar(const LLUUID &id)
 
 // Returns true if calling back the session URI after the session has closed is possible.
 // Currently this will be false only for PSTN P2P calls.
-BOOL LLVivoxVoiceClient::isSessionCallBackPossible(const LLUUID &session_id)
+bool LLVivoxVoiceClient::isSessionCallBackPossible(const LLUUID &session_id)
 {
-    BOOL result = TRUE;
+    bool result = true;
     sessionStatePtr_t session(findSession(session_id));
 
     if(session != NULL)
@@ -5074,9 +5076,9 @@ BOOL LLVivoxVoiceClient::isSessionCallBackPossible(const LLUUID &session_id)
 
 // Returns true if the session can accept text IM's.
 // Currently this will be false only for PSTN P2P calls.
-BOOL LLVivoxVoiceClient::isSessionTextIMPossible(const LLUUID &session_id)
+bool LLVivoxVoiceClient::isSessionTextIMPossible(const LLUUID &session_id)
 {
-    bool result = TRUE;
+    bool result = true;
     sessionStatePtr_t session(findSession(session_id));
 
     if(session != NULL)
@@ -5197,7 +5199,7 @@ std::string LLVivoxVoiceClient::nameFromID(const LLUUID &uuid)
     LLStringUtil::replaceChar(result, '+', '-');
     LLStringUtil::replaceChar(result, '/', '_');
 
-    // If you need to transform a GUID to this form on the Mac OS X command line, this will do so:
+    // If you need to transform a GUID to this form on the macOS command line, this will do so:
     // echo -n x && (echo e669132a-6c43-4ee1-a78d-6c82fff59f32 |xxd -r -p |openssl base64|tr '/+' '_-')
 
     // The reverse transform can be done with:
@@ -5563,9 +5565,9 @@ std::string LLVivoxVoiceClient::getDisplayName(const LLUUID& id)
 
 
 
-BOOL LLVivoxVoiceClient::getIsSpeaking(const LLUUID& id)
+bool LLVivoxVoiceClient::getIsSpeaking(const LLUUID& id)
 {
-    BOOL result = FALSE;
+    bool result = false;
     if (mProcessChannels)
     {
         participantStatePtr_t participant(findParticipantByID(id));
@@ -5573,7 +5575,7 @@ BOOL LLVivoxVoiceClient::getIsSpeaking(const LLUUID& id)
         {
             if (participant->mSpeakingTimeout.getElapsedTimeF32() > SPEAKING_TIMEOUT)
             {
-                participant->mIsSpeaking = FALSE;
+                participant->mIsSpeaking = false;
             }
             result = participant->mIsSpeaking;
         }
@@ -5582,12 +5584,12 @@ BOOL LLVivoxVoiceClient::getIsSpeaking(const LLUUID& id)
     return result;
 }
 
-BOOL LLVivoxVoiceClient::getIsModeratorMuted(const LLUUID& id)
+bool LLVivoxVoiceClient::getIsModeratorMuted(const LLUUID& id)
 {
-    BOOL result = FALSE;
+    bool result = false;
     if (!mProcessChannels)
     {
-        return FALSE;
+        return false;
     }
     participantStatePtr_t participant(findParticipantByID(id));
     if(participant)
@@ -5612,9 +5614,9 @@ F32 LLVivoxVoiceClient::getCurrentPower(const LLUUID& id)
 
 
 
-BOOL LLVivoxVoiceClient::getUsingPTT(const LLUUID& id)
+bool LLVivoxVoiceClient::getUsingPTT(const LLUUID& id)
 {
-    BOOL result = FALSE;
+    bool result = false;
 
     participantStatePtr_t participant(findParticipantByID(id));
     if(participant)
@@ -6300,7 +6302,7 @@ void LLVivoxVoiceClient::notifyStatusObservers(LLVoiceClientStatusObserver::ESta
 
         if (voice_status)
         {
-            LLFirstUse::speak(true);
+            LLAppViewer::instance()->postToMainCoro([=]() { LLFirstUse::speak(true); });
         }
     }
 }
@@ -6930,7 +6932,7 @@ void LLVivoxVoiceClient::updateVoiceMorphingMenu()
             const voice_effect_list_t& effect_list = effect_interfacep->getVoiceEffectList();
             if (!effect_list.empty())
             {
-                LLMenuGL * voice_morphing_menup = gMenuBarView->findChildMenuByName("VoiceMorphing", TRUE);
+                LLMenuGL * voice_morphing_menup = gMenuBarView->findChildMenuByName("VoiceMorphing", true);
 
                 if (NULL != voice_morphing_menup)
                 {
@@ -7221,8 +7223,8 @@ LLIOPipe::EStatus LLVivoxProtocolParser::process_impl(
     }
 
     // Look for input delimiter(s) in the input buffer.  If one is found, send the message to the xml parser.
-    int start = 0;
-    int delim;
+    size_t start = 0;
+    size_t delim;
     while((delim = mInput.find("\n\n\n", start)) != std::string::npos)
     {
 
@@ -7233,7 +7235,8 @@ LLIOPipe::EStatus LLVivoxProtocolParser::process_impl(
         XML_SetElementHandler(parser, ExpatStartTag, ExpatEndTag);
         XML_SetCharacterDataHandler(parser, ExpatCharHandler);
         XML_SetUserData(parser, this);
-        XML_Parse(parser, mInput.data() + start, delim - start, false);
+        XML_Parse(parser, mInput.data() + start, static_cast<int>(delim - start), false);
+
 
         LL_DEBUGS("VivoxProtocolParser") << "parsing: " << mInput.substr(start, delim - start) << LL_ENDL;
         start = delim + 3;
diff --git a/indra/newview/llvoicevivox.h b/indra/newview/llvoicevivox.h
index 55c1fb50d0..420e0aa869 100644
--- a/indra/newview/llvoicevivox.h
+++ b/indra/newview/llvoicevivox.h
@@ -71,7 +71,7 @@ class LLVivoxVoiceClient :  public LLSingleton<LLVivoxVoiceClient>,
                             virtual public LLVoiceEffectInterface,
                             virtual public LLVoiceP2POutgoingCallInterface
 {
-    LLSINGLETON_C11(LLVivoxVoiceClient);
+    LLSINGLETON(LLVivoxVoiceClient);
     LOG_CLASS(LLVivoxVoiceClient);
     virtual ~LLVivoxVoiceClient();
 
@@ -127,17 +127,17 @@ public:
     bool isParticipant(const LLUUID& speaker_id) override;
 
     // Send a text message to the specified user, initiating the session if necessary.
-    // virtual BOOL sendTextMessage(const LLUUID& participant_id, const std::string& message) const {return false;};
+    // virtual bool sendTextMessage(const LLUUID& participant_id, const std::string& message) const {return false;};
 
     // Returns true if calling back the session URI after the session has closed is possible.
     // Currently this will be false only for PSTN P2P calls.
     // NOTE: this will return true if the session can't be found.
-    BOOL isSessionCallBackPossible(const LLUUID &session_id) override;
+    bool isSessionCallBackPossible(const LLUUID &session_id) override;
 
     // Returns true if the session can accepte text IM's.
     // Currently this will be false only for PSTN P2P calls.
     // NOTE: this will return true if the session can't be found.
-    BOOL isSessionTextIMPossible(const LLUUID &session_id) override;
+    bool isSessionTextIMPossible(const LLUUID &session_id) override;
 
     ////////////////////////////
     /// @name Channel stuff
@@ -198,9 +198,9 @@ public:
     /// @name nearby speaker accessors
     //@{
     std::string getDisplayName(const LLUUID& id) override;
-    BOOL isParticipantAvatar(const LLUUID &id) override;
-    BOOL getIsSpeaking(const LLUUID& id) override;
-    BOOL getIsModeratorMuted(const LLUUID& id) override;
+    bool isParticipantAvatar(const LLUUID &id) override;
+    bool getIsSpeaking(const LLUUID& id) override;
+    bool getIsModeratorMuted(const LLUUID& id) override;
     F32 getCurrentPower(const LLUUID& id) override;     // "power" is related to "amplitude" in a defined way.  I'm just not sure what the formula is...
     F32 getUserVolume(const LLUUID& id) override;
     void setUserVolume(const LLUUID& id, F32 volume) override; // set's volume for specified agent, from 0-1 (where .5 is nominal)
@@ -508,7 +508,7 @@ protected:
     // Accessors for data related to nearby speakers
 
     // MBW -- XXX -- Not sure how to get this data out of the TVC
-    BOOL getUsingPTT(const LLUUID& id);
+    bool getUsingPTT(const LLUUID& id);
     std::string getGroupID(const LLUUID& id);       // group ID if the user is in group chat (empty string if not applicable)
 
     /////////////////////////////
diff --git a/indra/newview/llvoicewebrtc.cpp b/indra/newview/llvoicewebrtc.cpp
index f3ab52736e..1d729dcd35 100644
--- a/indra/newview/llvoicewebrtc.cpp
+++ b/indra/newview/llvoicewebrtc.cpp
@@ -78,8 +78,7 @@
 // for base64 decoding
 #include "apr_base64.h"
 
-#include "json/reader.h"
-#include "json/writer.h"
+#include "boost/json.hpp"
 
 const std::string WEBRTC_VOICE_SERVER_TYPE = "webrtc";
 
@@ -323,7 +322,7 @@ void LLWebRTCVoiceClient::updateSettings()
     config.mNoiseSuppressionLevel = (llwebrtc::LLWebRTCDeviceInterface::AudioConfig::ENoiseSuppressionLevel) (U32)sNoiseSuppressionLevel;
 
     mWebRTCDeviceInterface->setAudioConfig(config);
-    
+
 }
 
 // Observers
@@ -391,7 +390,7 @@ void LLWebRTCVoiceClient::notifyStatusObservers(LLVoiceClientStatusObserver::ESt
 
         if (voice_status)
         {
-            LLFirstUse::speak(true);
+            LLAppViewer::instance()->postToMainCoro([=]() { LLFirstUse::speak(true); });
         }
     }
 }
@@ -623,10 +622,10 @@ void LLWebRTCVoiceClient::setDevicesListUpdated(bool state)
 void LLWebRTCVoiceClient::OnDevicesChanged(const llwebrtc::LLWebRTCVoiceDeviceList& render_devices,
                                            const llwebrtc::LLWebRTCVoiceDeviceList& capture_devices)
 {
-    
+
     LL::WorkQueue::postMaybe(mMainQueue,
-                             [=] 
-        { 
+                             [=]
+        {
             OnDevicesChangedImpl(render_devices, capture_devices);
         });
 }
@@ -650,7 +649,7 @@ void LLWebRTCVoiceClient::OnDevicesChangedImpl(const llwebrtc::LLWebRTCVoiceDevi
     for (auto &device : capture_devices)
     {
         LL_DEBUGS("Voice") << "Checking capture device:'" << device.mID << "'" << LL_ENDL;
- 
+
         addCaptureDevice(LLVoiceDevice(device.mDisplayName, device.mID));
     }
     setCaptureDevice(inputDevice);
@@ -1016,35 +1015,38 @@ void LLWebRTCVoiceClient::sendPositionUpdate(bool force)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOICE
 
-    Json::FastWriter writer;
     std::string      spatial_data;
 
     if (mSpatialCoordsDirty || force)
     {
-        Json::Value   spatial = Json::objectValue;
-
-        spatial["sp"]   = Json::objectValue;
-        spatial["sp"]["x"] = (int) (mAvatarPosition[0] * 100);
-        spatial["sp"]["y"] = (int) (mAvatarPosition[1] * 100);
-        spatial["sp"]["z"] = (int) (mAvatarPosition[2] * 100);
-        spatial["sh"]      = Json::objectValue;
-        spatial["sh"]["x"] = (int) (mAvatarRot[0] * 100);
-        spatial["sh"]["y"] = (int) (mAvatarRot[1] * 100);
-        spatial["sh"]["z"] = (int) (mAvatarRot[2] * 100);
-        spatial["sh"]["w"] = (int) (mAvatarRot[3] * 100);
-
-        spatial["lp"]   = Json::objectValue;
-        spatial["lp"]["x"] = (int) (mListenerPosition[0] * 100);
-        spatial["lp"]["y"] = (int) (mListenerPosition[1] * 100);
-        spatial["lp"]["z"] = (int) (mListenerPosition[2] * 100);
-        spatial["lh"]      = Json::objectValue;
-        spatial["lh"]["x"] = (int) (mListenerRot[0] * 100);
-        spatial["lh"]["y"] = (int) (mListenerRot[1] * 100);
-        spatial["lh"]["z"] = (int) (mListenerRot[2] * 100);
-        spatial["lh"]["w"] = (int) (mListenerRot[3] * 100);
+        boost::json::object spatial;
+
+        spatial["sp"] = {
+            {"x", (int) (mAvatarPosition[0] * 100)},
+            {"y", (int) (mAvatarPosition[1] * 100)},
+            {"z", (int) (mAvatarPosition[2] * 100)}
+        };
+        spatial["sh"]  = {
+            {"x", (int) (mAvatarRot[0] * 100)},
+            {"y", (int) (mAvatarRot[1] * 100)},
+            {"z", (int) (mAvatarRot[2] * 100)},
+            {"w", (int) (mAvatarRot[3] * 100)}
+        };
+
+        spatial["lp"] = {
+            {"x", (int) (mListenerPosition[0] * 100)},
+            {"y", (int) (mListenerPosition[1] * 100)},
+            {"z", (int) (mListenerPosition[2] * 100)}
+        };
+
+        spatial["lh"] = {
+            {"x", (int) (mListenerRot[0] * 100)},
+            {"y", (int) (mListenerRot[1] * 100)},
+            {"z", (int) (mListenerRot[2] * 100)},
+            {"w", (int) (mListenerRot[3] * 100)}};
 
         mSpatialCoordsDirty = false;
-        spatial_data = writer.write(spatial);
+        spatial_data = boost::json::serialize(spatial);
 
         sessionState::for_each(boost::bind(predSendData, _1, spatial_data));
     }
@@ -1068,10 +1070,10 @@ void LLWebRTCVoiceClient::updateOwnVolume() {
 
 // Provider-level participant management
 
-BOOL LLWebRTCVoiceClient::isParticipantAvatar(const LLUUID &id)
+bool LLWebRTCVoiceClient::isParticipantAvatar(const LLUUID &id)
 {
     // WebRTC participants are always SL avatars.
-    return TRUE;
+    return true;
 }
 
 void LLWebRTCVoiceClient::getParticipantList(std::set<LLUUID> &participants)
@@ -1291,10 +1293,10 @@ bool LLWebRTCVoiceClient::isVoiceWorking() const
 
 // Returns true if calling back the session URI after the session has closed is possible.
 // Currently this will be false only for PSTN P2P calls.
-BOOL LLWebRTCVoiceClient::isSessionCallBackPossible(const LLUUID &session_id)
+bool LLWebRTCVoiceClient::isSessionCallBackPossible(const LLUUID &session_id)
 {
     sessionStatePtr_t session(findP2PSession(session_id));
-    return session && session->isCallbackPossible() ? TRUE : FALSE;
+    return session && session->isCallbackPossible();
 }
 
 // Channel Management
@@ -1560,9 +1562,9 @@ std::string LLWebRTCVoiceClient::getDisplayName(const LLUUID& id)
     return result;
 }
 
-BOOL LLWebRTCVoiceClient::getIsSpeaking(const LLUUID& id)
+bool LLWebRTCVoiceClient::getIsSpeaking(const LLUUID& id)
 {
-    BOOL result = FALSE;
+    bool result = false;
     if (mProcessChannels && mSession)
     {
         participantStatePtr_t participant(mSession->findParticipantByID(id));
@@ -1575,9 +1577,9 @@ BOOL LLWebRTCVoiceClient::getIsSpeaking(const LLUUID& id)
 }
 
 // TODO: Need to pull muted status from the webrtc server
-BOOL LLWebRTCVoiceClient::getIsModeratorMuted(const LLUUID& id)
+bool LLWebRTCVoiceClient::getIsModeratorMuted(const LLUUID& id)
 {
-    BOOL result = FALSE;
+    bool result = false;
     if (mProcessChannels && mSession)
     {
         participantStatePtr_t participant(mSession->findParticipantByID(id));
@@ -2270,7 +2272,7 @@ void LLVoiceWebRTCConnection::processIceUpdatesCoro()
 void LLVoiceWebRTCConnection::OnOfferAvailable(const std::string &sdp)
 {
     LL::WorkQueue::postMaybe(mMainQueue,
-        [=] { 
+        [=] {
             if (mShutDown)
             {
                 return;
@@ -2319,7 +2321,7 @@ void LLVoiceWebRTCConnection::OnAudioEstablished(llwebrtc::LLWebRTCAudioInterfac
 void LLVoiceWebRTCConnection::OnRenegotiationNeeded()
 {
     LL::WorkQueue::postMaybe(mMainQueue,
-        [=] { 
+        [=] {
             LL_DEBUGS("Voice") << "Voice channel requires renegotiation." << LL_ENDL;
             if (!mShutDown)
             {
@@ -2363,12 +2365,8 @@ void LLVoiceWebRTCConnection::setSpeakerVolume(F32 volume)
 
 void LLVoiceWebRTCConnection::setUserVolume(const LLUUID& id, F32 volume)
 {
-    Json::Value root = Json::objectValue;
-    Json::Value user_gain = Json::objectValue;
-    user_gain[id.asString()] = (uint32_t)(volume*200);  // give it two decimal places with a range from 0-200, where 100 is normal
-    root["ug"] = user_gain;
-    Json::FastWriter writer;
-    std::string json_data = writer.write(root);
+    boost::json::object root = {{"ug", {id.asString(), (uint32_t) (volume * 200)}}};
+    std::string json_data = boost::json::serialize(root);
     if (mWebRTCDataInterface)
     {
         mWebRTCDataInterface->sendData(json_data, false);
@@ -2377,12 +2375,8 @@ void LLVoiceWebRTCConnection::setUserVolume(const LLUUID& id, F32 volume)
 
 void LLVoiceWebRTCConnection::setUserMute(const LLUUID& id, bool mute)
 {
-    Json::Value root = Json::objectValue;
-    Json::Value muted = Json::objectValue;
-    muted[id.asString()] = mute;
-    root["m"] = muted;
-    Json::FastWriter writer;
-    std::string json_data = writer.write(root);
+    boost::json::object root = {{"m", {id.asString(), mute}}};
+    std::string         json_data = boost::json::serialize(root);
     if (mWebRTCDataInterface)
     {
         mWebRTCDataInterface->sendData(json_data, false);
@@ -2434,7 +2428,7 @@ void LLVoiceWebRTCConnection::breakVoiceConnectionCoro()
 
     LLVoiceWebRTCStats::getInstance()->provisionAttemptStart();
     LLSD body;
-    body["logout"]         = TRUE;
+    body["logout"]         = true;
     body["viewer_session"] = mViewerSession;
     body["voice_server_type"] = WEBRTC_VOICE_SERVER_TYPE;
 
@@ -2607,7 +2601,7 @@ bool LLVoiceWebRTCConnection::connectionStateMachine()
             }
             mIceCompleted = false;
             setVoiceConnectionState(VOICE_STATE_WAIT_FOR_SESSION_START);
-            
+
             // tell the webrtc library that we want a connection.  The library will
             // respond with an offer on a separate thread, which will cause
             // the session state to change.
@@ -2780,7 +2774,7 @@ void LLVoiceWebRTCConnection::OnDataReceived(const std::string& data, bool binar
 
 //
 // The LLWebRTCVoiceConnection object will not be deleted
-// before the webrtc connection itself is shut down, so 
+// before the webrtc connection itself is shut down, so
 // we shouldn't be getting this callback on a nonexistant
 // this pointer.
 void LLVoiceWebRTCConnection::OnDataReceivedImpl(const std::string &data, bool binary)
@@ -2798,27 +2792,36 @@ void LLVoiceWebRTCConnection::OnDataReceivedImpl(const std::string &data, bool b
         return;
     }
 
-    Json::Reader reader;
-    Json::Value  voice_data;
-    if (reader.parse(data, voice_data, false))  // don't collect comments
+    boost::json::error_code ec;
+    boost::json::value voice_data_parsed = boost::json::parse(data, ec);
+    if (!ec)  // don't collect comments
     {
-        if (!voice_data.isObject())
+        if (!voice_data_parsed.is_object())
         {
             LL_WARNS("Voice") << "Expected object from data channel:" << data << LL_ENDL;
             return;
         }
+        boost::json::object voice_data = voice_data_parsed.as_object();
         bool new_participant = false;
-        Json::Value      mute = Json::objectValue;
-        Json::Value      user_gain = Json::objectValue;
-        for (auto &participant_id : voice_data.getMemberNames())
+        boost::json::object mute;
+        boost::json::object user_gain;
+        for (auto &participant_elem : voice_data)
         {
-            LLUUID agent_id(participant_id);
+            boost::json::string participant_id(participant_elem.key());
+            LLUUID agent_id(participant_id.c_str());
             if (agent_id.isNull())
             {
                // probably a test client.
                continue;
             }
 
+            if (!participant_elem.value().is_object())
+            {
+                continue;
+            }
+
+            boost::json::object participant_obj = participant_elem.value().as_object();
+
             LLWebRTCVoiceClient::participantStatePtr_t participant =
                 LLWebRTCVoiceClient::getInstance()->findParticipantByID(mChannelID, agent_id);
             bool joined  = false;
@@ -2828,11 +2831,16 @@ void LLVoiceWebRTCConnection::OnDataReceivedImpl(const std::string &data, bool b
                                    // where a participant on a neighboring region may be
                                    // connected to multiple servers.  We don't want to
                                    // add new identical participants from all of those servers.
-            if (voice_data[participant_id].isMember("j"))
+            if (participant_obj.contains("j") &&
+                participant_obj["j"].is_object())
             {
                 // a new participant has announced that they're joining.
                 joined  = true;
-                primary = voice_data[participant_id]["j"].get("p", Json::Value(false)).asBool();
+                if (participant_elem.value().as_object()["j"].as_object().contains("p") &&
+                    participant_elem.value().as_object()["j"].as_object()["p"].is_bool())
+                {
+                    primary = participant_elem.value().as_object()["j"].as_object()["p"].as_bool();
+                }
 
                 // track incoming participants that are muted so we can mute their connections (or set their volume)
                 bool isMuted = LLMuteList::getInstance()->isMuted(agent_id, LLMute::flagVoiceChat);
@@ -2855,7 +2863,7 @@ void LLVoiceWebRTCConnection::OnDataReceivedImpl(const std::string &data, bool b
 
             if (participant)
             {
-                if (voice_data[participant_id].get("l", Json::Value(false)).asBool())
+                if (participant_obj.contains("l") && participant_obj["l"].is_bool() && participant_obj["l"].as_bool())
                 {
                     // an existing participant is leaving.
                     if (agent_id != gAgentID)
@@ -2866,18 +2874,20 @@ void LLVoiceWebRTCConnection::OnDataReceivedImpl(const std::string &data, bool b
                 else
                 {
                     // we got a 'power' update.
-                    F32 level = (F32) (voice_data[participant_id].get("p", Json::Value(participant->mLevel)).asInt()) / 128;
-                    // convert to decibles
-                    participant->mLevel = level;
+                    if (participant_obj.contains("p") && participant_obj["p"].is_number())
+                    {
+                        participant->mLevel = (F32)participant_obj["p"].as_int64();
+                    }
 
-                    if (voice_data[participant_id].isMember("v"))
+                    if (participant_obj.contains("v") && participant_obj["v"].is_bool())
                     {
-                        participant->mIsSpeaking = voice_data[participant_id].get("v", Json::Value(false)).asBool();
+                        participant->mIsSpeaking = participant_obj["v"].as_bool();
                     }
 
-                    if (voice_data[participant_id].isMember("m"))
+                    if (participant_obj.contains("v") && participant_obj["m"].is_bool())
                     {
-                        participant->mIsModeratorMuted = voice_data[participant_id].get("m", Json::Value(false)).asBool();
+                        participant->mIsModeratorMuted = participant_obj["m"].as_bool();
+                        ;
                     }
                 }
             }
@@ -2885,8 +2895,7 @@ void LLVoiceWebRTCConnection::OnDataReceivedImpl(const std::string &data, bool b
 
         // tell the simulator to set the mute and volume data for this
         // participant, if there are any updates.
-        Json::FastWriter writer;
-        Json::Value      root     = Json::objectValue;
+        boost::json::object root;
         if (mute.size() > 0)
         {
             root["m"] = mute;
@@ -2897,7 +2906,7 @@ void LLVoiceWebRTCConnection::OnDataReceivedImpl(const std::string &data, bool b
         }
         if (root.size() > 0)
         {
-            std::string json_data = writer.write(root);
+            std::string json_data = boost::json::serialize(root);
             mWebRTCDataInterface->sendData(json_data, false);
         }
     }
@@ -2939,16 +2948,16 @@ void LLVoiceWebRTCConnection::sendJoin()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOICE
 
-    Json::FastWriter writer;
-    Json::Value      root     = Json::objectValue;
-    Json::Value      join_obj = Json::objectValue;
+
+    boost::json::object root;
+    boost::json::object join_obj;
     LLUUID           regionID = gAgent.getRegion()->getRegionID();
     if ((regionID == mRegionID) || !isSpatial())
     {
         join_obj["p"] = true;
     }
     root["j"]             = join_obj;
-    std::string json_data = writer.write(root);
+    std::string json_data = boost::json::serialize(root);
     mWebRTCDataInterface->sendData(json_data, false);
 }
 
diff --git a/indra/newview/llvoicewebrtc.h b/indra/newview/llvoicewebrtc.h
index 7042bbae00..480a7897cd 100644
--- a/indra/newview/llvoicewebrtc.h
+++ b/indra/newview/llvoicewebrtc.h
@@ -41,7 +41,7 @@ class LLWebRTCProtocolParser;
 #include "llparcel.h"
 #include "llmutelist.h"
 #include <queue>
-#include "json/reader.h"
+#include "boost/json.hpp"
 
 #ifdef LL_USESYSTEMLIBS
 # include "expat.h"
@@ -64,7 +64,7 @@ class LLWebRTCVoiceClient : public LLSingleton<LLWebRTCVoiceClient>,
                             public llwebrtc::LLWebRTCDevicesObserver,
                             public LLMuteListObserver
 {
-    LLSINGLETON_C11(LLWebRTCVoiceClient);
+    LLSINGLETON(LLWebRTCVoiceClient);
     LOG_CLASS(LLWebRTCVoiceClient);
     virtual ~LLWebRTCVoiceClient();
 
@@ -122,15 +122,15 @@ public:
     bool isParticipant(const LLUUID& speaker_id) override;
 
     // Send a text message to the specified user, initiating the session if necessary.
-    // virtual BOOL sendTextMessage(const LLUUID& participant_id, const std::string& message) const {return false;};
+    // virtual bool sendTextMessage(const LLUUID& participant_id, const std::string& message) const {return false;};
 
     // Returns true if calling back the session URI after the session has closed is possible.
     // Currently this will be false only for PSTN P2P calls.
     // NOTE: this will return true if the session can't be found.
-    BOOL isSessionCallBackPossible(const LLUUID &session_id) override;
+    bool isSessionCallBackPossible(const LLUUID &session_id) override;
 
     // WebRTC doesn't preclude text im
-    BOOL isSessionTextIMPossible(const LLUUID &session_id) override { return TRUE; }
+    bool isSessionTextIMPossible(const LLUUID &session_id) override { return true; }
 
     ////////////////////////////
     /// @name Channel stuff
@@ -177,9 +177,9 @@ public:
     //////////////////////////
     /// @name nearby speaker accessors
     std::string getDisplayName(const LLUUID& id) override;
-    BOOL isParticipantAvatar(const LLUUID &id) override;
-    BOOL getIsSpeaking(const LLUUID& id) override;
-    BOOL getIsModeratorMuted(const LLUUID& id) override;
+    bool isParticipantAvatar(const LLUUID &id) override;
+    bool getIsSpeaking(const LLUUID& id) override;
+    bool getIsModeratorMuted(const LLUUID& id) override;
     F32 getCurrentPower(const LLUUID& id) override;        // "power" is related to "amplitude" in a defined way.  I'm just not sure what the formula is...
     F32 getUserVolume(const LLUUID& id) override;
     void setUserVolume(const LLUUID& id, F32 volume) override; // set's volume for specified agent, from 0-1 (where .5 is nominal)
diff --git a/indra/newview/llvopartgroup.cpp b/indra/newview/llvopartgroup.cpp
index d8d7cab6eb..81f16cf8cb 100644
--- a/indra/newview/llvopartgroup.cpp
+++ b/indra/newview/llvopartgroup.cpp
@@ -139,7 +139,7 @@ LLVOPartGroup::LLVOPartGroup(const LLUUID &id, const LLPCode pcode, LLViewerRegi
 {
     setNumTEs(1);
     setTETexture(0, LLUUID::null);
-    mbCanSelect = FALSE;            // users can't select particle systems
+    mbCanSelect = false;            // users can't select particle systems
 }
 
 
@@ -147,9 +147,9 @@ LLVOPartGroup::~LLVOPartGroup()
 {
 }
 
-BOOL LLVOPartGroup::isActive() const
+bool LLVOPartGroup::isActive() const
 {
-    return FALSE;
+    return false;
 }
 
 F32 LLVOPartGroup::getBinRadius()
@@ -207,7 +207,7 @@ void LLVOPartGroup::updateTextures()
 LLDrawable* LLVOPartGroup::createDrawable(LLPipeline *pipeline)
 {
     pipeline->allocDrawable(this);
-    mDrawable->setLit(FALSE);
+    mDrawable->setLit(false);
     mDrawable->setRenderType(LLPipeline::RENDER_TYPE_PARTICLES);
     return mDrawable;
 }
@@ -270,7 +270,7 @@ LLVector3 LLVOPartGroup::getCameraPosition() const
     return gAgentCamera.getCameraPositionAgent();
 }
 
-BOOL LLVOPartGroup::updateGeometry(LLDrawable *drawable)
+bool LLVOPartGroup::updateGeometry(LLDrawable *drawable)
 {
     LL_PROFILE_ZONE_SCOPED;
 
@@ -298,12 +298,12 @@ BOOL LLVOPartGroup::updateGeometry(LLDrawable *drawable)
         }
         drawable->setNumFaces(0, NULL, getTEImage(0));
         LLPipeline::sCompiles++;
-        return TRUE;
+        return true;
     }
 
     if (!(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_PARTICLES)))
     {
-        return TRUE;
+        return true;
     }
 
     if (num_parts > drawable->getNumFaces())
@@ -317,7 +317,7 @@ BOOL LLVOPartGroup::updateGeometry(LLDrawable *drawable)
     F32 pixel_meter_ratio = LLViewerCamera::getInstance()->getPixelMeterRatio();
     pixel_meter_ratio *= pixel_meter_ratio;
 
-    LLViewerPartSim::checkParticleCount(mViewerPartGroupp->mParticles.size()) ;
+    LLViewerPartSim::checkParticleCount(static_cast<U32>(mViewerPartGroupp->mParticles.size()));
 
     S32 count=0;
     mDepth = 0.f;
@@ -441,15 +441,15 @@ BOOL LLVOPartGroup::updateGeometry(LLDrawable *drawable)
 
     mDrawable->movePartition();
     LLPipeline::sCompiles++;
-    return TRUE;
+    return true;
 }
 
 
-BOOL LLVOPartGroup::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
+bool LLVOPartGroup::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
                                           S32 face,
-                                          BOOL pick_transparent,
-                                          BOOL pick_rigged,
-                                          BOOL pick_unselectable,
+                                          bool pick_transparent,
+                                          bool pick_rigged,
+                                          bool pick_unselectable,
                                           S32* face_hit,
                                           LLVector4a* intersection,
                                           LLVector2* tex_coord,
@@ -460,7 +460,7 @@ BOOL LLVOPartGroup::lineSegmentIntersect(const LLVector4a& start, const LLVector
     dir.setSub(end, start);
 
     F32 closest_t = 2.f;
-    BOOL ret = FALSE;
+    bool ret = false;
 
     for (U32 idx = 0; idx < mViewerPartGroupp->mParticles.size(); ++idx)
     {
@@ -480,7 +480,7 @@ BOOL LLVOPartGroup::lineSegmentIntersect(const LLVector4a& start, const LLVector
                 t <= 1.f &&
                 t < closest_t)
             {
-                ret = TRUE;
+                ret = true;
                 closest_t = t;
                 if (face_hit)
                 {
@@ -702,7 +702,7 @@ U32 LLVOPartGroup::getPartitionType() const
 }
 
 LLParticlePartition::LLParticlePartition(LLViewerRegion* regionp)
-: LLSpatialPartition(LLDrawPoolAlpha::VERTEX_DATA_MASK | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, regionp)
+: LLSpatialPartition(LLDrawPoolAlpha::VERTEX_DATA_MASK | LLVertexBuffer::MAP_TEXTURE_INDEX, true, regionp)
 {
     mRenderPass = LLRenderPass::PASS_ALPHA;
     mDrawableType = LLPipeline::RENDER_TYPE_PARTICLES;
@@ -889,7 +889,7 @@ void LLParticlePartition::getGeometry(LLSpatialGroup* group)
 
         object->getGeometry(facep->getTEOffset(), cur_vert, cur_norm, cur_tc, cur_col, cur_glow, cur_idx);
 
-        bool has_glow = FALSE;
+        bool has_glow = false;
 
         if (cur_glow.get() != start_glow)
         {
@@ -899,7 +899,7 @@ void LLParticlePartition::getGeometry(LLSpatialGroup* group)
         llassert(facep->getGeomCount() == 4);
         llassert(facep->getIndicesCount() == 6);
 
-        S32 idx = draw_vec.size()-1;
+        S32 idx = static_cast<S32>(draw_vec.size()) - 1;
 
         bool fullbright = facep->isState(LLFace::FULLBRIGHT);
 
@@ -972,7 +972,7 @@ U32 LLVOHUDPartGroup::getPartitionType() const
 LLDrawable* LLVOHUDPartGroup::createDrawable(LLPipeline *pipeline)
 {
     pipeline->allocDrawable(this);
-    mDrawable->setLit(FALSE);
+    mDrawable->setLit(false);
     mDrawable->setRenderType(LLPipeline::RENDER_TYPE_HUD_PARTICLES);
     return mDrawable;
 }
diff --git a/indra/newview/llvopartgroup.h b/indra/newview/llvopartgroup.h
index b93f8924e6..20b4561374 100644
--- a/indra/newview/llvopartgroup.h
+++ b/indra/newview/llvopartgroup.h
@@ -56,18 +56,18 @@ public:
 
     LLVOPartGroup(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp);
 
-    /*virtual*/ BOOL    isActive() const; // Whether this object needs to do an idleUpdate.
+    /*virtual*/ bool    isActive() const; // Whether this object needs to do an idleUpdate.
     void idleUpdate(LLAgent &agent, const F64 &time);
 
     virtual F32 getBinRadius();
     virtual void updateSpatialExtents(LLVector4a& newMin, LLVector4a& newMax);
     virtual U32 getPartitionType() const;
 
-    /*virtual*/ BOOL lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
+    /*virtual*/ bool lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
                                           S32 face,
-                                          BOOL pick_transparent,
-                                          BOOL pick_rigged,
-                                          BOOL pick_unselectable,
+                                          bool pick_transparent,
+                                          bool pick_rigged,
+                                          bool pick_unselectable,
                                           S32* face_hit,
                                           LLVector4a* intersection,
                                           LLVector2* tex_coord,
@@ -78,7 +78,7 @@ public:
     /*virtual*/ void updateTextures();
 
     /*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
-    /*virtual*/ BOOL        updateGeometry(LLDrawable *drawable);
+    /*virtual*/ bool        updateGeometry(LLDrawable *drawable);
     void        getGeometry(const LLViewerPart& part,
                                 LLStrider<LLVector4a>& verticesp);
 
diff --git a/indra/newview/llvosky.cpp b/indra/newview/llvosky.cpp
index 5e5c887be6..2b8ed74b0f 100644
--- a/indra/newview/llvosky.cpp
+++ b/indra/newview/llvosky.cpp
@@ -105,7 +105,7 @@ void LLSkyTex::init(bool isShiny)
 
     for (S32 i = 0; i < 2; ++i)
     {
-        mTexture[i] = LLViewerTextureManager::getLocalTexture(FALSE);
+        mTexture[i] = LLViewerTextureManager::getLocalTexture(false);
         mTexture[i]->setAddressMode(LLTexUnit::TAM_CLAMP);
         mImageRaw[i] = new LLImageRaw(SKYTEX_RESOLUTION, SKYTEX_RESOLUTION, SKYTEX_COMPONENTS);
 
@@ -123,7 +123,7 @@ void LLSkyTex::restoreGL()
 {
     for (S32 i = 0; i < 2; i++)
     {
-        mTexture[i] = LLViewerTextureManager::getLocalTexture(FALSE);
+        mTexture[i] = LLViewerTextureManager::getLocalTexture(false);
         mTexture[i]->setAddressMode(LLTexUnit::TAM_CLAMP);
     }
 }
@@ -158,7 +158,7 @@ S32 LLSkyTex::getNext()
     return ((sCurrent+1) & 1);
 }
 
-S32 LLSkyTex::getWhich(const BOOL curr)
+S32 LLSkyTex::getWhich(const bool curr)
 {
     int tex = curr ? sCurrent : getNext();
     return tex;
@@ -166,6 +166,7 @@ S32 LLSkyTex::getWhich(const BOOL curr)
 
 void LLSkyTex::initEmpty(const S32 tex)
 {
+    LLImageDataLock lock(mImageRaw[tex]);
     U8* data = mImageRaw[tex]->getData();
     for (S32 i = 0; i < SKYTEX_RESOLUTION; ++i)
     {
@@ -187,7 +188,8 @@ void LLSkyTex::initEmpty(const S32 tex)
 
 void LLSkyTex::create()
 {
-    U8* data = mImageRaw[sCurrent]->getData();
+    LLImageDataSharedLock lock(mImageRaw[sCurrent]);
+    const U8* data = mImageRaw[sCurrent]->getData();
     for (S32 i = 0; i < SKYTEX_RESOLUTION; ++i)
     {
         for (S32 j = 0; j < SKYTEX_RESOLUTION; ++j)
@@ -205,17 +207,17 @@ void LLSkyTex::create()
 void LLSkyTex::createGLImage(S32 which)
 {
     mTexture[which]->setExplicitFormat(GL_RGBA8, GL_RGBA);
-    mTexture[which]->createGLTexture(0, mImageRaw[which], 0, TRUE, LLGLTexture::LOCAL);
+    mTexture[which]->createGLTexture(0, mImageRaw[which], 0, true, LLGLTexture::LOCAL);
     mTexture[which]->setAddressMode(LLTexUnit::TAM_CLAMP);
 }
 
-void LLSkyTex::bindTexture(BOOL curr)
+void LLSkyTex::bindTexture(bool curr)
 {
     int tex = getWhich(curr);
     gGL.getTexUnit(0)->bind(mTexture[tex], true);
 }
 
-LLImageRaw* LLSkyTex::getImageRaw(BOOL curr)
+LLImageRaw* LLSkyTex::getImageRaw(bool curr)
 {
     int tex = getWhich(curr);
     return mImageRaw[tex];
@@ -232,10 +234,10 @@ LLHeavenBody::LLHeavenBody(const F32 rad)
   mDirection(LLVector3(0,0,0)),
   mIntensity(0.f),
   mDiskRadius(rad),
-  mDraw(FALSE),
+  mDraw(false),
   mHorizonVisibility(1.f),
   mVisibility(1.f),
-  mVisible(FALSE)
+  mVisible(false)
 {
     mColor.setToBlack();
     mColorCached.setToBlack();
@@ -394,24 +396,24 @@ const S32 SKYTEX_TILE_RES_X = SKYTEX_RESOLUTION / NUM_TILES_X;
 const S32 SKYTEX_TILE_RES_Y = SKYTEX_RESOLUTION / NUM_TILES_Y;
 
 LLVOSky::LLVOSky(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
-:   LLStaticViewerObject(id, pcode, regionp, TRUE),
+:   LLStaticViewerObject(id, pcode, regionp, true),
     mSun(SUN_DISK_RADIUS), mMoon(MOON_DISK_RADIUS),
     mBrightnessScale(1.f),
     mBrightnessScaleNew(0.f),
     mBrightnessScaleGuess(1.f),
-    mWeatherChange(FALSE),
+    mWeatherChange(false),
     mCloudDensity(0.2f),
     mWind(0.f),
-    mForceUpdate(FALSE),
-    mNeedUpdate(TRUE),
+    mForceUpdate(false),
+    mNeedUpdate(true),
     mCubeMapUpdateStage(-1),
     mWorldScale(1.f),
     mBumpSunDir(0.f, 0.f, 1.f)
 {
     /// WL PARAMS
 
-    mInitialized = FALSE;
-    mbCanSelect = FALSE;
+    mInitialized = false;
+    mbCanSelect = false;
     mUpdateTimer.reset();
 
     mForceUpdateThrottle.setTimerExpirySec(UPDATE_EXPRY);
@@ -434,7 +436,7 @@ LLVOSky::LLVOSky(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
     mSun.setIntensity(SUN_INTENSITY);
     mMoon.setIntensity(0.1f * SUN_INTENSITY);
 
-    mHeavenlyBodyUpdated = FALSE ;
+    mHeavenlyBodyUpdated = false ;
 
     mDrawRefl = 0;
     mInterpVal = 0.f;
@@ -477,10 +479,10 @@ void LLVOSky::init()
 
     mInitialized = true;
 
-    mHeavenlyBodyUpdated = FALSE ;
+    mHeavenlyBodyUpdated = false ;
 
-    mRainbowMap = LLViewerTextureManager::getFetchedTexture(psky->getRainbowTextureId(), FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
-    mHaloMap    = LLViewerTextureManager::getFetchedTexture(psky->getHaloTextureId(),  FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
+    mRainbowMap = LLViewerTextureManager::getFetchedTexture(psky->getRainbowTextureId(), FTT_DEFAULT, true, LLGLTexture::BOOST_UI);
+    mHaloMap    = LLViewerTextureManager::getFetchedTexture(psky->getHaloTextureId(),  FTT_DEFAULT, true, LLGLTexture::BOOST_UI);
 }
 
 
@@ -659,7 +661,7 @@ void LLVOSky::idleUpdate(LLAgent &agent, const F64 &time)
 
 void LLVOSky::forceSkyUpdate()
 {
-    mForceUpdate = TRUE;
+    mForceUpdate = true;
     m_lastAtmosphericsVars = {};
     mCubeMapUpdateStage = -1;
 }
@@ -671,12 +673,12 @@ bool LLVOSky::updateSky()
     if (mDead || !(gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_SKY)))
     {
         // It's dead.  Don't update it.
-        return TRUE;
+        return true;
     }
 
     if (gGLManager.mIsDisabled)
     {
-        return TRUE;
+        return true;
     }
 
     LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
@@ -695,8 +697,8 @@ bool LLVOSky::updateSky()
     if (!mCubeMap || LLPipeline::sReflectionProbesEnabled)
     {
         mCubeMapUpdateStage = NUM_CUBEMAP_FACES;
-        mForceUpdate = FALSE;
-        return TRUE;
+        mForceUpdate = false;
+        return true;
     }
 
     if (mCubeMapUpdateStage < 0)
@@ -712,7 +714,7 @@ bool LLVOSky::updateSky()
             // start updating cube map sides
             updateFog(LLViewerCamera::getInstance()->getFar());
             mCubeMapUpdateStage = 0;
-            mForceUpdate = FALSE;
+            mForceUpdate = false;
         }
     }
     else if (mCubeMapUpdateStage == NUM_CUBEMAP_FACES && !LLPipeline::sReflectionProbesEnabled)
@@ -722,7 +724,7 @@ bool LLVOSky::updateSky()
 
         bool is_alm_wl_sky = gPipeline.canUseWindLightShaders();
 
-        int tex = mSkyTex[0].getWhich(TRUE);
+        int tex = mSkyTex[0].getWhich(true);
 
         for (int side = 0; side < NUM_CUBEMAP_FACES; side++)
         {
@@ -731,14 +733,14 @@ bool LLVOSky::updateSky()
 
             if (!is_alm_wl_sky)
             {
-                raw1 = mSkyTex[side].getImageRaw(TRUE);
-                raw2 = mSkyTex[side].getImageRaw(FALSE);
+                raw1 = mSkyTex[side].getImageRaw(true);
+                raw2 = mSkyTex[side].getImageRaw(false);
                 raw2->copy(raw1);
                 mSkyTex[side].createGLImage(tex);
             }
 
-            raw1 = mShinyTex[side].getImageRaw(TRUE);
-            raw2 = mShinyTex[side].getImageRaw(FALSE);
+            raw1 = mShinyTex[side].getImageRaw(true);
+            raw2 = mShinyTex[side].getImageRaw(false);
             raw2->copy(raw1);
             mShinyTex[side].createGLImage(tex);
         }
@@ -763,8 +765,8 @@ bool LLVOSky::updateSky()
 
         m_lastAtmosphericsVars = m_atmosphericsVars;
 
-        mNeedUpdate = FALSE;
-        mForceUpdate = FALSE;
+        mNeedUpdate = false;
+        mForceUpdate = false;
 
         mForceUpdateThrottle.setTimerExpirySec(UPDATE_EXPRY);
 
@@ -791,7 +793,7 @@ bool LLVOSky::updateSky()
         mCubeMapUpdateStage++;
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLVOSky::updateTextures()
@@ -830,7 +832,7 @@ void LLVOSky::updateTextures()
 LLDrawable *LLVOSky::createDrawable(LLPipeline *pipeline)
 {
     pipeline->allocDrawable(this);
-    mDrawable->setLit(FALSE);
+    mDrawable->setLit(false);
 
     LLDrawPoolSky *poolp = (LLDrawPoolSky*) gPipeline.getPool(LLDrawPool::POOL_SKY);
     poolp->setSkyTex(mSkyTex);
@@ -865,8 +867,8 @@ void LLVOSky::setMoonScale(F32 moon_scale)
 void LLVOSky::setSunTextures(const LLUUID& sun_texture, const LLUUID& sun_texture_next)
 {
     // We test the UUIDs here because we explicitly do not want the default image returned by getFetchedTexture in that case...
-    mSunTexturep[0] = sun_texture.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(sun_texture, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
-    mSunTexturep[1] = sun_texture_next.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(sun_texture_next, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
+    mSunTexturep[0] = sun_texture.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(sun_texture, FTT_DEFAULT, true, LLGLTexture::BOOST_UI);
+    mSunTexturep[1] = sun_texture_next.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(sun_texture_next, FTT_DEFAULT, true, LLGLTexture::BOOST_UI);
 
     bool can_use_wl = gPipeline.canUseWindLightShaders();
 
@@ -909,8 +911,8 @@ void LLVOSky::setMoonTextures(const LLUUID& moon_texture, const LLUUID& moon_tex
 
     bool can_use_wl = gPipeline.canUseWindLightShaders();
 
-    mMoonTexturep[0] = moon_texture.isNull()      ? nullptr : LLViewerTextureManager::getFetchedTexture(moon_texture, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
-    mMoonTexturep[1] = moon_texture_next.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(moon_texture_next, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
+    mMoonTexturep[0] = moon_texture.isNull()      ? nullptr : LLViewerTextureManager::getFetchedTexture(moon_texture, FTT_DEFAULT, true, LLGLTexture::BOOST_UI);
+    mMoonTexturep[1] = moon_texture_next.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(moon_texture_next, FTT_DEFAULT, true, LLGLTexture::BOOST_UI);
 
     if (mFace[FACE_MOON])
     {
@@ -932,8 +934,8 @@ void LLVOSky::setCloudNoiseTextures(const LLUUID& cloud_noise_texture, const LLU
 {
     LLSettingsSky::ptr_t psky = LLEnvironment::instance().getCurrentSky();
 
-    mCloudNoiseTexturep[0] = cloud_noise_texture.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(cloud_noise_texture, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
-    mCloudNoiseTexturep[1] = cloud_noise_texture_next.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(cloud_noise_texture_next, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
+    mCloudNoiseTexturep[0] = cloud_noise_texture.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(cloud_noise_texture, FTT_DEFAULT, true, LLGLTexture::BOOST_UI);
+    mCloudNoiseTexturep[1] = cloud_noise_texture_next.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(cloud_noise_texture_next, FTT_DEFAULT, true, LLGLTexture::BOOST_UI);
 
     if (mCloudNoiseTexturep[0])
     {
@@ -953,8 +955,8 @@ void LLVOSky::setBloomTextures(const LLUUID& bloom_texture, const LLUUID& bloom_
     LLUUID bloom_tex = bloom_texture.isNull() ? psky->GetDefaultBloomTextureId() : bloom_texture;
     LLUUID bloom_tex_next = bloom_texture_next.isNull() ? (bloom_texture.isNull() ? psky->GetDefaultBloomTextureId() : bloom_texture) : bloom_texture_next;
 
-    mBloomTexturep[0] = bloom_tex.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(bloom_tex, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
-    mBloomTexturep[1] = bloom_tex_next.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(bloom_tex_next, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
+    mBloomTexturep[0] = bloom_tex.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(bloom_tex, FTT_DEFAULT, true, LLGLTexture::BOOST_UI);
+    mBloomTexturep[1] = bloom_tex_next.isNull() ? nullptr : LLViewerTextureManager::getFetchedTexture(bloom_tex_next, FTT_DEFAULT, true, LLGLTexture::BOOST_UI);
 
     if (mBloomTexturep[0])
     {
@@ -967,7 +969,7 @@ void LLVOSky::setBloomTextures(const LLUUID& bloom_texture, const LLUUID& bloom_
     }
 }
 
-BOOL LLVOSky::updateGeometry(LLDrawable *drawable)
+bool LLVOSky::updateGeometry(LLDrawable *drawable)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWABLE;
     if (mFace[FACE_REFLECTION] == NULL)
@@ -1069,7 +1071,7 @@ BOOL LLVOSky::updateGeometry(LLDrawable *drawable)
     const F32 camera_height = mCameraPosAgent.mV[2];
     const F32 height_above_water = camera_height - water_height;
 
-    bool sun_flag = FALSE;
+    bool sun_flag = false;
     if (mSun.isVisible())
     {
         sun_flag = !mMoon.isVisible() || ((look_at * mSun.getDirection()) > 0);
@@ -1084,12 +1086,12 @@ BOOL LLVOSky::updateGeometry(LLDrawable *drawable)
             }
 
     LLPipeline::sCompiles++;
-    return TRUE;
+    return true;
 }
 
 bool LLVOSky::updateHeavenlyBodyGeometry(LLDrawable *drawable, F32 scale, const S32 f, LLHeavenBody& hb, const LLVector3 &up, const LLVector3 &right)
 {
-    mHeavenlyBodyUpdated = TRUE ;
+    mHeavenlyBodyUpdated = true ;
 
     LLStrider<LLVector3> verticesp;
     LLStrider<LLVector3> normalsp;
@@ -1131,7 +1133,7 @@ bool LLVOSky::updateHeavenlyBodyGeometry(LLDrawable *drawable, F32 scale, const
     v_clipped[2] = draw_pos + scaled_right + scaled_up;
     v_clipped[3] = draw_pos + scaled_right - scaled_up;
 
-    hb.setVisible(TRUE);
+    hb.setVisible(true);
 
     facep = mFace[f];
 
@@ -1156,7 +1158,7 @@ bool LLVOSky::updateHeavenlyBodyGeometry(LLDrawable *drawable, F32 scale, const
 
     if (-1 == index_offset)
     {
-        return TRUE;
+        return true;
     }
 
     for (S32 vtx = 0; vtx < 4; ++vtx)
@@ -1180,7 +1182,7 @@ bool LLVOSky::updateHeavenlyBodyGeometry(LLDrawable *drawable, F32 scale, const
 
     facep->getVertexBuffer()->unmapBuffer();
 
-    return TRUE;
+    return true;
 }
 
 F32 dtReflection(const LLVector3& p, F32 cos_dir_from_top, F32 sin_dir_from_top, F32 diff_angl_dir)
diff --git a/indra/newview/llvosky.h b/indra/newview/llvosky.h
index 87f801862c..ad7570105e 100644
--- a/indra/newview/llvosky.h
+++ b/indra/newview/llvosky.h
@@ -60,7 +60,7 @@ private:
     static S32      sCurrent;
 
 public:
-    void bindTexture(BOOL curr = TRUE);
+    void bindTexture(bool curr = true);
 
 protected:
     LLSkyTex();
@@ -75,7 +75,7 @@ protected:
     static S32 getCurrent();
     static S32 stepCurrent();
     static S32 getNext();
-    static S32 getWhich(const BOOL curr);
+    static S32 getWhich(const bool curr);
 
     void initEmpty(const S32 tex);
 
@@ -101,6 +101,7 @@ protected:
 
     void setPixel(const LLColor4U &col, const S32 i, const S32 j)
     {
+        LLImageDataSharedLock lock(mImageRaw[sCurrent]);
         S32 offset = (i * SKYTEX_RESOLUTION + j) * SKYTEX_COMPONENTS;
         U32* pix = (U32*) &(mImageRaw[sCurrent]->getData()[offset]);
         *pix = col.asRGBA();
@@ -109,14 +110,15 @@ protected:
     LLColor4U getPixel(const S32 i, const S32 j)
     {
         LLColor4U col;
+        LLImageDataSharedLock lock(mImageRaw[sCurrent]);
         S32 offset = (i * SKYTEX_RESOLUTION + j) * SKYTEX_COMPONENTS;
         U32* pix = (U32*) &(mImageRaw[sCurrent]->getData()[offset]);
         col.fromRGBA( *pix );
         return col;
     }
 
-    LLImageRaw* getImageRaw(BOOL curr=TRUE);
-    void createGLImage(BOOL curr=TRUE);
+    LLImageRaw* getImageRaw(bool curr=true);
+    void createGLImage(S32 which);
 
     bool mIsShiny;
 };
@@ -135,7 +137,7 @@ protected:
     LLVector3       mAngularVelocity;       // velocity of the local heavenly body
 
     F32             mDiskRadius;
-    bool            mDraw;                  // FALSE - do not draw.
+    bool            mDraw;                  // false - do not draw.
     F32             mHorizonVisibility;     // number [0, 1] due to how horizon
     F32             mVisibility;            // same but due to other objects being in throng.
     bool            mVisible;
@@ -229,7 +231,7 @@ public:
     // later?
     /*virtual*/ void updateTextures();
     /*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
-    /*virtual*/ BOOL        updateGeometry(LLDrawable *drawable);
+    /*virtual*/ bool        updateGeometry(LLDrawable *drawable);
 
     const LLHeavenBody& getSun() const                      { return mSun;  }
     const LLHeavenBody& getMoon() const                     { return mMoon; }
diff --git a/indra/newview/llvosurfacepatch.cpp b/indra/newview/llvosurfacepatch.cpp
index 405d0e59ce..56742751e8 100644
--- a/indra/newview/llvosurfacepatch.cpp
+++ b/indra/newview/llvosurfacepatch.cpp
@@ -48,19 +48,19 @@ F32 LLVOSurfacePatch::sLODFactor = 1.f;
 
 LLVOSurfacePatch::LLVOSurfacePatch(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
     :   LLStaticViewerObject(id, pcode, regionp),
-        mDirtiedPatch(FALSE),
+        mDirtiedPatch(false),
         mPool(NULL),
         mBaseComp(0),
         mPatchp(NULL),
-        mDirtyTexture(FALSE),
-        mDirtyTerrain(FALSE),
+        mDirtyTexture(false),
+        mDirtyTerrain(false),
         mLastNorthStride(0),
         mLastEastStride(0),
         mLastStride(0),
         mLastLength(0)
 {
     // Terrain must draw during selection passes so it can block objects behind it.
-    mbCanSelect = TRUE;
+    mbCanSelect = true;
     setScale(LLVector3(16.f, 16.f, 16.f)); // Hack for setting scale for bounding boxes/visibility.
 }
 
@@ -82,9 +82,9 @@ void LLVOSurfacePatch::markDead()
 }
 
 
-BOOL LLVOSurfacePatch::isActive() const
+bool LLVOSurfacePatch::isActive() const
 {
-    return FALSE;
+    return false;
 }
 
 
@@ -147,7 +147,7 @@ void LLVOSurfacePatch::updateGL()
     }
 }
 
-BOOL LLVOSurfacePatch::updateGeometry(LLDrawable *drawable)
+bool LLVOSurfacePatch::updateGeometry(LLDrawable *drawable)
 {
     LL_PROFILE_ZONE_SCOPED;
 
@@ -209,7 +209,7 @@ BOOL LLVOSurfacePatch::updateGeometry(LLDrawable *drawable)
     mLastNorthStride = north_stride;
     mLastEastStride = east_stride;
 
-    return TRUE;
+    return true;
 }
 
 void LLVOSurfacePatch::updateFaceSize(S32 idx)
@@ -238,9 +238,9 @@ void LLVOSurfacePatch::updateFaceSize(S32 idx)
     }
 }
 
-BOOL LLVOSurfacePatch::updateLOD()
+bool LLVOSurfacePatch::updateLOD()
 {
-    return TRUE;
+    return true;
 }
 
 void LLVOSurfacePatch::getTerrainGeometry(LLStrider<LLVector3> &verticesp,
@@ -766,9 +766,9 @@ void LLVOSurfacePatch::setPatch(LLSurfacePatch *patchp)
 
 void LLVOSurfacePatch::dirtyPatch()
 {
-    mDirtiedPatch = TRUE;
+    mDirtiedPatch = true;
     dirtyGeom();
-    mDirtyTerrain = TRUE;
+    mDirtyTerrain = true;
     LLVector3 center = mPatchp->getCenterRegion();
     LLSurface *surfacep = mPatchp->getSurface();
 
@@ -857,14 +857,14 @@ void LLVOSurfacePatch::getGeomSizesEast(const S32 stride, const S32 east_stride,
     }
 }
 
-BOOL LLVOSurfacePatch::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, S32 face, BOOL pick_transparent, BOOL pick_rigged, BOOL pick_unselectable, S32 *face_hitp,
+bool LLVOSurfacePatch::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, S32 face, bool pick_transparent, bool pick_rigged, bool pick_unselectable, S32 *face_hitp,
                                       LLVector4a* intersection,LLVector2* tex_coord, LLVector4a* normal, LLVector4a* tangent)
 
 {
 
     if (!lineSegmentBoundingBox(start, end))
     {
-        return FALSE;
+        return false;
     }
 
     LLVector4a da;
@@ -885,7 +885,7 @@ BOOL LLVOSurfacePatch::lineSegmentIntersect(const LLVector4a& start, const LLVec
     if (mRegionp->getLandHeightRegion(origin) > origin.mV[2])
     {
         //origin is under ground, treat as no intersection
-        return FALSE;
+        return false;
     }
 
     //step one meter at a time until intersection point found
@@ -943,7 +943,7 @@ BOOL LLVOSurfacePatch::lineSegmentIntersect(const LLVector4a& start, const LLVec
                     normal->load3((mRegionp->getLand().resolveNormalGlobal(mRegionp->getPosGlobalFromRegion(sample))).mV);
                 }
 
-                return TRUE;
+                return true;
             }
         }
 
@@ -955,7 +955,7 @@ BOOL LLVOSurfacePatch::lineSegmentIntersect(const LLVector4a& start, const LLVec
     }
 
 
-    return FALSE;
+    return false;
 }
 
 void LLVOSurfacePatch::updateSpatialExtents(LLVector4a& newMin, LLVector4a &newMax)
@@ -978,10 +978,10 @@ U32 LLVOSurfacePatch::getPartitionType() const
 }
 
 LLTerrainPartition::LLTerrainPartition(LLViewerRegion* regionp)
-: LLSpatialPartition(LLDrawPoolTerrain::VERTEX_DATA_MASK, FALSE, regionp)
+: LLSpatialPartition(LLDrawPoolTerrain::VERTEX_DATA_MASK, false, regionp)
 {
-    mOcclusionEnabled = FALSE;
-    mInfiniteFarClip = TRUE;
+    mOcclusionEnabled = false;
+    mInfiniteFarClip = true;
     mDrawableType = LLPipeline::RENDER_TYPE_TERRAIN;
     mPartitionType = LLViewerRegion::PARTITION_TERRAIN;
 }
diff --git a/indra/newview/llvosurfacepatch.h b/indra/newview/llvosurfacepatch.h
index a38a5e011f..2780b97a97 100644
--- a/indra/newview/llvosurfacepatch.h
+++ b/indra/newview/llvosurfacepatch.h
@@ -60,8 +60,8 @@ public:
 
     /*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
     /*virtual*/ void        updateGL();
-    /*virtual*/ BOOL        updateGeometry(LLDrawable *drawable);
-    /*virtual*/ BOOL        updateLOD();
+    /*virtual*/ bool        updateGeometry(LLDrawable *drawable);
+    /*virtual*/ bool        updateLOD();
     /*virtual*/ void        updateFaceSize(S32 idx);
     void getTerrainGeometry(LLStrider<LLVector3> &verticesp,
                                 LLStrider<LLVector3> &normalsp,
@@ -73,7 +73,7 @@ public:
     /*virtual*/ void setPixelAreaAndAngle(LLAgent &agent); // generate accurate apparent angle and area
 
     /*virtual*/ void updateSpatialExtents(LLVector4a& newMin, LLVector4a& newMax);
-    /*virtual*/ BOOL isActive() const; // Whether this object needs to do an idleUpdate.
+    /*virtual*/ bool isActive() const; // Whether this object needs to do an idleUpdate.
 
     void setPatch(LLSurfacePatch *patchp);
     LLSurfacePatch  *getPatch() const       { return mPatchp; }
@@ -81,11 +81,11 @@ public:
     void dirtyPatch();
     void dirtyGeom();
 
-    /*virtual*/ BOOL lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
+    /*virtual*/ bool lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
                                           S32 face = -1,                        // which face to check, -1 = ALL_SIDES
-                                          BOOL pick_transparent = FALSE,
-                                          BOOL pick_rigged = FALSE,
-                                          BOOL pick_unselectable = TRUE,
+                                          bool pick_transparent = false,
+                                          bool pick_rigged = false,
+                                          bool pick_unselectable = true,
                                           S32* face_hit = NULL,                 // which face was hit
                                           LLVector4a* intersection = NULL,       // return the intersection point
                                           LLVector2* tex_coord = NULL,          // return the texture coordinates of the intersection point
@@ -93,7 +93,7 @@ public:
                                           LLVector4a* tangent = NULL           // return the surface tangent at the intersection point
         );
 
-    BOOL            mDirtiedPatch;
+    bool            mDirtiedPatch;
 protected:
     ~LLVOSurfacePatch();
 
@@ -101,8 +101,8 @@ protected:
     LLFacePool      *getPool();
     S32             mBaseComp;
     LLSurfacePatch  *mPatchp;
-    BOOL            mDirtyTexture;
-    BOOL            mDirtyTerrain;
+    bool            mDirtyTexture;
+    bool            mDirtyTerrain;
 
     S32             mLastNorthStride;
     S32             mLastEastStride;
diff --git a/indra/newview/llvotree.cpp b/indra/newview/llvotree.cpp
index 8b229ec98b..a981c60ef2 100644
--- a/indra/newview/llvotree.cpp
+++ b/indra/newview/llvotree.cpp
@@ -135,10 +135,7 @@ void LLVOTree::initClass()
             LLUUID id;
             S32 S32_val;
 
-            BOOL success = TRUE;
-
-
-
+            bool success{ true };
             S32 species;
             static LLStdStringHandle species_id_string = LLXmlTree::addAttributeString("species_id");
             if (!tree_def->getFastAttributeS32(species_id_string, species))
@@ -250,7 +247,7 @@ void LLVOTree::initClass()
             }
         }
 
-        BOOL have_all_trees = TRUE;
+        bool have_all_trees {true};
         std::string err;
 
         for (S32 i=0;i<sMaxTreeSpecies;++i)
@@ -258,7 +255,7 @@ void LLVOTree::initClass()
             if (!sSpeciesTable.count(i))
             {
                 err.append(llformat(" %d",i));
-                have_all_trees = FALSE;
+                have_all_trees = false;
             }
         }
 
@@ -322,7 +319,7 @@ U32 LLVOTree::processUpdateMessage(LLMessageSystem *mesgsys,
     //  Load Species-Specific data
     //
     static const S32 MAX_TREE_TEXTURE_VIRTURE_SIZE_RESET_INTERVAL = 32 ; //frames.
-    mTreeImagep = LLViewerTextureManager::getFetchedTexture(sSpeciesTable[mSpecies]->mTextureID, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+    mTreeImagep = LLViewerTextureManager::getFetchedTexture(sSpeciesTable[mSpecies]->mTextureID, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
     mTreeImagep->setMaxVirtualSizeResetInterval(MAX_TREE_TEXTURE_VIRTURE_SIZE_RESET_INTERVAL); //allow to wait for at most 16 frames to reset virtual size.
 
     mBranchLength = sSpeciesTable[mSpecies]->mBranchLength;
@@ -473,7 +470,7 @@ void LLVOTree::updateTextures()
 LLDrawable* LLVOTree::createDrawable(LLPipeline *pipeline)
 {
     pipeline->allocDrawable(this);
-    mDrawable->setLit(FALSE);
+    mDrawable->setLit(false);
 
     mDrawable->setRenderType(LLPipeline::RENDER_TYPE_TREE);
 
@@ -493,7 +490,7 @@ LLDrawable* LLVOTree::createDrawable(LLPipeline *pipeline)
 const S32 LEAF_INDICES = 24;
 const S32 LEAF_VERTICES = 16;
 
-BOOL LLVOTree::updateGeometry(LLDrawable *drawable)
+bool LLVOTree::updateGeometry(LLDrawable *drawable)
 {
     LL_PROFILE_ZONE_SCOPED;
 
@@ -505,7 +502,7 @@ BOOL LLVOTree::updateGeometry(LLDrawable *drawable)
         {
             facep->setVertexBuffer(NULL);
         }
-        return TRUE ;
+        return true ;
     }
 
     if (mDrawable->getFace(0) &&
@@ -522,7 +519,7 @@ BOOL LLVOTree::updateGeometry(LLDrawable *drawable)
         S32 lod;
 
         LLFace *face = drawable->getFace(0);
-        if (!face) return TRUE;
+        if (!face) return true;
 
         face->mCenterAgent = getPositionAgent();
         face->mCenterLocal = face->mCenterAgent;
@@ -545,7 +542,7 @@ BOOL LLVOTree::updateGeometry(LLDrawable *drawable)
                 << max_vertices << " vertices and "
                 << max_indices << " indices" << LL_ENDL;
             mReferenceBuffer = NULL; //unref
-            return TRUE;
+            return true;
         }
 
         LLStrider<LLVector3> vertices;
@@ -874,7 +871,7 @@ BOOL LLVOTree::updateGeometry(LLDrawable *drawable)
     //generate tree mesh
     updateMesh();
 
-    return TRUE;
+    return true;
 }
 
 void LLVOTree::updateMesh()
@@ -1174,14 +1171,14 @@ void LLVOTree::updateSpatialExtents(LLVector4a& newMin, LLVector4a& newMax)
     mDrawable->setPositionGroup(pos);
 }
 
-BOOL LLVOTree::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, S32 face, BOOL pick_transparent, BOOL pick_rigged, BOOL pick_unselectable, S32 *face_hitp,
+bool LLVOTree::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, S32 face, bool pick_transparent, bool pick_rigged, bool pick_unselectable, S32 *face_hitp,
                                       LLVector4a* intersection,LLVector2* tex_coord, LLVector4a* normal, LLVector4a* tangent)
 
 {
 
     if (!lineSegmentBoundingBox(start, end))
     {
-        return FALSE;
+        return false;
     }
 
     const LLVector4a* exta = mDrawable->getSpatialExtents();
@@ -1218,10 +1215,10 @@ BOOL LLVOTree::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& e
         {
             normal->load3(norm.mV);
         }
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 U32 LLVOTree::getPartitionType() const
@@ -1230,7 +1227,7 @@ U32 LLVOTree::getPartitionType() const
 }
 
 LLTreePartition::LLTreePartition(LLViewerRegion* regionp)
-: LLSpatialPartition(0, FALSE, regionp)
+: LLSpatialPartition(0, false, regionp)
 {
     mDrawableType = LLPipeline::RENDER_TYPE_TREE;
     mPartitionType = LLViewerRegion::PARTITION_TREE;
diff --git a/indra/newview/llvotree.h b/indra/newview/llvotree.h
index 0facb466dd..b2fc16bd17 100644
--- a/indra/newview/llvotree.h
+++ b/indra/newview/llvotree.h
@@ -66,7 +66,7 @@ public:
     /*virtual*/ void updateTextures();
 
     /*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
-    /*virtual*/ BOOL        updateGeometry(LLDrawable *drawable);
+    /*virtual*/ bool        updateGeometry(LLDrawable *drawable);
     /*virtual*/ void        updateSpatialExtents(LLVector4a &min, LLVector4a &max);
 
     virtual U32 getPartitionType() const;
@@ -107,11 +107,11 @@ public:
                                  F32 branches,
                                  F32 alpha);
 
-     /*virtual*/ BOOL lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
+     /*virtual*/ bool lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
                                           S32 face = -1,                        // which face to check, -1 = ALL_SIDES
-                                          BOOL pick_transparent = FALSE,
-                                          BOOL pick_rigged = FALSE,
-                                          BOOL pick_unselectable = TRUE,
+                                          bool pick_transparent = false,
+                                          bool pick_rigged = false,
+                                          bool pick_unselectable = true,
                                           S32* face_hit = NULL,                 // which face was hit
                                           LLVector4a* intersection = NULL,       // return the intersection point
                                           LLVector2* tex_coord = NULL,          // return the texture coordinates of the intersection point
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index fe95aa80e3..29c510e7b3 100644
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -89,12 +89,13 @@
 #include "llsculptidsize.h"
 #include "llavatarappearancedefines.h"
 #include "llgltfmateriallist.h"
+#include "gltfscenemanager.h"
 
 const F32 FORCE_SIMPLE_RENDER_AREA = 512.f;
 const F32 FORCE_CULL_AREA = 8.f;
 U32 JOINT_COUNT_REQUIRED_FOR_FULLRIG = 1;
 
-BOOL gAnimateTextures = TRUE;
+bool gAnimateTextures = true;
 
 F32 LLVOVolume::sLODFactor = 1.f;
 F32 LLVOVolume::sLODSlopDistanceFactor = 0.5f; //Changing this to zero, effectively disables the LOD transition slop
@@ -105,7 +106,7 @@ S32 LLVOVolume::mRenderComplexity_current = 0;
 LLPointer<LLObjectMediaDataClient> LLVOVolume::sObjectMediaClient = NULL;
 LLPointer<LLObjectMediaNavigateClient> LLVOVolume::sObjectMediaNavigateClient = NULL;
 
-extern BOOL gCubeSnapshot;
+extern bool gCubeSnapshot;
 
 // Implementation class of LLMediaDataClientObject.  See llmediadataclient.h
 class LLMediaDataClientObjectImpl : public LLMediaDataClientObject
@@ -216,18 +217,18 @@ LLVOVolume::LLVOVolume(const LLUUID &id, const LLPCode pcode, LLViewerRegion *re
     mRelativeXform.setIdentity();
     mRelativeXformInvTrans.setIdentity();
 
-    mFaceMappingChanged = FALSE;
+    mFaceMappingChanged = false;
     mLOD = MIN_LOD;
     mLODDistance = 0.0f;
     mLODAdjustedDistance = 0.0f;
     mLODRadius = 0.0f;
     mTextureAnimp = NULL;
-    mVolumeChanged = FALSE;
+    mVolumeChanged = false;
     mVObjRadius = LLVector3(1,1,0.5f).length();
     mNumFaces = 0;
-    mLODChanged = FALSE;
-    mSculptChanged = FALSE;
-    mColorChanged = FALSE;
+    mLODChanged = false;
+    mSculptChanged = false;
+    mColorChanged = false;
     mSpotLightPriority = 0.f;
 
     mSkinInfoUnavaliable = false;
@@ -405,7 +406,7 @@ U32 LLVOVolume::processUpdateMessage(LLMessageSystem *mesgsys,
                     }
 
                     gPipeline.markTextured(mDrawable);
-                    mFaceMappingChanged = TRUE;
+                    mFaceMappingChanged = true;
                     mTexAnimMode = 0;
                 }
             }
@@ -439,7 +440,7 @@ U32 LLVOVolume::processUpdateMessage(LLMessageSystem *mesgsys,
         if (update_type != OUT_TERSE_IMPROVED)
         {
             LLVolumeParams volume_params;
-            BOOL res = LLVolumeMessage::unpackVolumeParams(&volume_params, *dp);
+            bool res = LLVolumeMessage::unpackVolumeParams(&volume_params, *dp);
             if (!res)
             {
                 LL_WARNS() << "Bogus volume parameters in object " << getID() << LL_ENDL;
@@ -509,7 +510,7 @@ U32 LLVOVolume::processUpdateMessage(LLMessageSystem *mesgsys,
                 }
 
                 gPipeline.markTextured(mDrawable);
-                mFaceMappingChanged = TRUE;
+                mFaceMappingChanged = true;
                 mTexAnimMode = 0;
             }
 
@@ -600,7 +601,7 @@ void LLVOVolume::animateTextures()
         {
             if (!mTexAnimMode)
             {
-                mFaceMappingChanged = TRUE;
+                mFaceMappingChanged = true;
                 gPipeline.markTextured(mDrawable);
             }
             mTexAnimMode = result | mTextureAnimp->mMode;
@@ -696,7 +697,7 @@ void LLVOVolume::animateTextures()
                 }
 
                 gPipeline.markTextured(mDrawable);
-                mFaceMappingChanged = TRUE;
+                mFaceMappingChanged = true;
                 mTexAnimMode = 0;
             }
         }
@@ -709,11 +710,11 @@ void LLVOVolume::updateTextures()
     updateTextureVirtualSize();
 }
 
-BOOL LLVOVolume::isVisible() const
+bool LLVOVolume::isVisible() const
 {
     if(mDrawable.notNull() && mDrawable->isVisible())
     {
-        return TRUE ;
+        return true ;
     }
 
     if(isAttachment())
@@ -727,7 +728,7 @@ BOOL LLVOVolume::isVisible() const
         return objp && objp->mDrawable.notNull() && objp->mDrawable->isVisible() ;
     }
 
-    return FALSE ;
+    return false ;
 }
 
 void LLVOVolume::updateTextureVirtualSize(bool forced)
@@ -859,7 +860,7 @@ void LLVOVolume::updateTextureVirtualSize(bool forced)
                 S32 lod = llmin(mLOD, 3);
                 F32 lodf = ((F32)(lod + 1.0f)/4.f);
                 F32 tex_size = lodf * LLViewerTexture::sMaxSculptRez ;
-                mSculptTexture->addTextureStats(2.f * tex_size * tex_size, FALSE);
+                mSculptTexture->addTextureStats(2.f * tex_size * tex_size, false);
             }
 
             S32 texture_discard = mSculptTexture->getCachedRawImageLevel(); //try to match the texture
@@ -870,7 +871,7 @@ void LLVOVolume::updateTextureVirtualSize(bool forced)
                 current_discard < 0)) //no previous rebuild
             {
                 gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_VOLUME);
-                mSculptChanged = TRUE;
+                mSculptChanged = true;
             }
 
             if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_SCULPTED))
@@ -887,7 +888,7 @@ void LLVOVolume::updateTextureVirtualSize(bool forced)
     {
         LLLightImageParams* params = (LLLightImageParams*) getParameterEntry(LLNetworkData::PARAMS_LIGHT_IMAGE);
         LLUUID id = params->getLightTexture();
-        mLightTexture = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE);
+        mLightTexture = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE);
         if (mLightTexture.notNull())
         {
             F32 rad = getLightRadius();
@@ -917,14 +918,14 @@ void LLVOVolume::updateTextureVirtualSize(bool forced)
     }
 }
 
-BOOL LLVOVolume::isActive() const
+bool LLVOVolume::isActive() const
 {
     return !mStatic;
 }
 
-BOOL LLVOVolume::setMaterial(const U8 material)
+bool LLVOVolume::setMaterial(const U8 material)
 {
-    BOOL res = LLViewerObject::setMaterial(material);
+    bool res = LLViewerObject::setMaterial(material);
 
     return res;
 }
@@ -935,7 +936,7 @@ void LLVOVolume::setTexture(const S32 face)
     gGL.getTexUnit(0)->bind(getTEImage(face));
 }
 
-void LLVOVolume::setScale(const LLVector3 &scale, BOOL damped)
+void LLVOVolume::setScale(const LLVector3 &scale, bool damped)
 {
     if (scale != getScale())
     {
@@ -994,7 +995,7 @@ LLDrawable *LLVOVolume::createDrawable(LLPipeline *pipeline)
     if (getIsLight())
     {
         // Add it to the pipeline mLightSet
-        gPipeline.setLight(mDrawable, TRUE);
+        gPipeline.setLight(mDrawable, true);
     }
 
     if (isReflectionProbe())
@@ -1009,7 +1010,7 @@ LLDrawable *LLVOVolume::createDrawable(LLPipeline *pipeline)
     return mDrawable;
 }
 
-BOOL LLVOVolume::setVolume(const LLVolumeParams &params_in, const S32 detail, bool unique_volume)
+bool LLVOVolume::setVolume(const LLVolumeParams &params_in, const S32 detail, bool unique_volume)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME;
     LLVolumeParams volume_params = params_in;
@@ -1017,7 +1018,7 @@ BOOL LLVOVolume::setVolume(const LLVolumeParams &params_in, const S32 detail, bo
     S32 last_lod = mVolumep.notNull() ? LLVolumeLODGroup::getVolumeDetailFromScale(mVolumep->getDetail()) : -1;
     S32 lod = mLOD;
 
-    BOOL is404 = FALSE;
+    bool is404 = false;
 
     if (isSculpted())
     {
@@ -1029,7 +1030,7 @@ BOOL LLVOVolume::setVolume(const LLVolumeParams &params_in, const S32 detail, bo
                 lod = gMeshRepo.getActualMeshLOD(volume_params, lod);
                 if (lod == -1)
                 {
-                    is404 = TRUE;
+                    is404 = true;
                     lod = 0;
                 }
             }
@@ -1040,7 +1041,7 @@ BOOL LLVOVolume::setVolume(const LLVolumeParams &params_in, const S32 detail, bo
     bool is_flexible = (volume_params.getPathParams().getCurveType() == LL_PCODE_PATH_FLEXIBLE);
     if (is_flexible)
     {
-        setParameterEntryInUse(LLNetworkData::PARAMS_FLEXIBLE, TRUE, false);
+        setParameterEntryInUse(LLNetworkData::PARAMS_FLEXIBLE, true, false);
         if (!mVolumeImpl)
         {
             LLFlexibleObjectData* data = (LLFlexibleObjectData*)getParameterEntry(LLNetworkData::PARAMS_FLEXIBLE);
@@ -1050,7 +1051,7 @@ BOOL LLVOVolume::setVolume(const LLVolumeParams &params_in, const S32 detail, bo
     else
     {
         // Mark the parameter not in use
-        setParameterEntryInUse(LLNetworkData::PARAMS_FLEXIBLE, FALSE, false);
+        setParameterEntryInUse(LLNetworkData::PARAMS_FLEXIBLE, false, false);
         if (mVolumeImpl)
         {
             delete mVolumeImpl;
@@ -1058,14 +1059,14 @@ BOOL LLVOVolume::setVolume(const LLVolumeParams &params_in, const S32 detail, bo
             if (mDrawable.notNull())
             {
                 // Undo the damage we did to this matrix
-                mDrawable->updateXform(FALSE);
+                mDrawable->updateXform(false);
             }
         }
     }
 
     if (is404)
     {
-        setIcon(LLViewerTextureManager::getFetchedTextureFromFile("icons/Inv_Mesh.png", FTT_LOCAL_FILE, TRUE, LLGLTexture::BOOST_UI));
+        setIcon(LLViewerTextureManager::getFetchedTextureFromFile("icons/Inv_Mesh.png", FTT_LOCAL_FILE, true, LLGLTexture::BOOST_UI));
         //render prim proxy when mesh loading attempts give up
         volume_params.setSculptID(LLUUID::null, LL_SCULPT_TYPE_NONE);
 
@@ -1073,7 +1074,7 @@ BOOL LLVOVolume::setVolume(const LLVolumeParams &params_in, const S32 detail, bo
 
     if ((LLPrimitive::setVolume(volume_params, lod, (mVolumeImpl && mVolumeImpl->isVolumeUnique()))) || mSculptChanged)
     {
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
 
         if (mVolumeImpl)
         {
@@ -1133,14 +1134,19 @@ BOOL LLVOVolume::setVolume(const LLVolumeParams &params_in, const S32 detail, bo
             }
         }
 
-        return TRUE;
+        if ((volume_params.getSculptType() & LL_SCULPT_TYPE_MASK) == LL_SCULPT_TYPE_GLTF)
+        { // notify GLTFSceneManager about new GLTF object
+            LL::GLTFSceneManager::instance().addGLTFObject(this, volume_params.getSculptID());
+        }
+
+        return true;
     }
     else if (NO_LOD == lod)
     {
         LLSculptIDSize::instance().resetSizeSum(volume_params.getSculptID());
     }
 
-    return FALSE;
+    return false;
 }
 
 void LLVOVolume::updateSculptTexture()
@@ -1153,7 +1159,7 @@ void LLVOVolume::updateSculptTexture()
         LLUUID id =  sculpt_params->getSculptTexture();
         if (id.notNull())
         {
-            mSculptTexture = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+            mSculptTexture = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
         }
 
         mSkinInfoUnavaliable = false;
@@ -1194,7 +1200,7 @@ void LLVOVolume::updateVisualComplexity()
 
 void LLVOVolume::notifyMeshLoaded()
 {
-    mSculptChanged = TRUE;
+    mSculptChanged = true;
     gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_GEOMETRY);
 
     if (!mSkinInfo && !mSkinInfoUnavaliable)
@@ -1317,6 +1323,8 @@ void LLVOVolume::sculpt()
         }
         else
         {
+            LLImageDataSharedLock lock(raw_image);
+
             sculpt_height = raw_image->getHeight();
             sculpt_width = raw_image->getWidth();
             sculpt_components = raw_image->getComponents();
@@ -1398,11 +1406,17 @@ std::string get_debug_object_lod_text(LLVOVolume *rootp)
     return result;
 }
 
-BOOL LLVOVolume::calcLOD()
+bool LLVOVolume::calcLOD()
 {
     if (mDrawable.isNull())
     {
-        return FALSE;
+        return false;
+    }
+
+    if (mGLTFAsset != nullptr)
+    {
+        // do not calculate LOD for GLTF objects
+        return false;
     }
 
     S32 cur_detail = 0;
@@ -1418,7 +1432,7 @@ BOOL LLVOVolume::calcLOD()
         // Not sure how this can really happen, but alas it does. Better exit here than crashing.
         if( !avatar || !avatar->mDrawable )
         {
-            return FALSE;
+            return false;
         }
 
         distance = avatar->mDrawable->mDistanceWRTCamera;
@@ -1446,7 +1460,7 @@ BOOL LLVOVolume::calcLOD()
         if (distance <= 0.f || radius <= 0.f)
         {
             LL_DEBUGS("DynamicBox","CalcLOD") << "avatar distance/radius uninitialized, skipping" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
     else
@@ -1456,7 +1470,7 @@ BOOL LLVOVolume::calcLOD()
         if (distance <= 0.f || radius <= 0.f)
         {
             LL_DEBUGS("DynamicBox","CalcLOD") << "non-avatar distance/radius uninitialized, skipping" << LL_ENDL;
-            return FALSE;
+            return false;
         }
     }
 
@@ -1546,22 +1560,22 @@ BOOL LLVOVolume::calcLOD()
         mAppAngle = ll_round((F32) atan2( mDrawable->getRadius(), mDrawable->mDistanceWRTCamera) * RAD_TO_DEG, 0.01f);
         mLOD = cur_detail;
 
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLVOVolume::updateLOD()
+bool LLVOVolume::updateLOD()
 {
     if (mDrawable.isNull())
     {
-        return FALSE;
+        return false;
     }
 
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME;
 
-    BOOL lod_changed = FALSE;
+    bool lod_changed = false;
 
     if (!LLSculptIDSize::instance().isUnloaded(getVolume()->getParams().getSculptID()))
     {
@@ -1569,13 +1583,13 @@ BOOL LLVOVolume::updateLOD()
     }
     else
     {
-        return FALSE;
+        return false;
     }
 
     if (lod_changed)
     {
         gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_VOLUME);
-        mLODChanged = TRUE;
+        mLODChanged = true;
     }
     else
     {
@@ -1592,12 +1606,12 @@ BOOL LLVOVolume::updateLOD()
     return lod_changed;
 }
 
-BOOL LLVOVolume::setDrawableParent(LLDrawable* parentp)
+bool LLVOVolume::setDrawableParent(LLDrawable* parentp)
 {
     if (!LLViewerObject::setDrawableParent(parentp))
     {
         // no change in drawable parent
-        return FALSE;
+        return false;
     }
 
     if (!mDrawable->isRoot())
@@ -1615,7 +1629,7 @@ BOOL LLVOVolume::setDrawableParent(LLDrawable* parentp)
         }
     }
 
-    return TRUE;
+    return true;
 }
 
 void LLVOVolume::updateFaceFlags()
@@ -1626,7 +1640,7 @@ void LLVOVolume::updateFaceFlags()
         LLFace *face = mDrawable->getFace(i);
         if (face)
         {
-            BOOL fullbright = getTE(i)->getFullbright();
+            bool fullbright = getTE(i)->getFullbright();
             face->clearState(LLFace::FULLBRIGHT | LLFace::HUD_RENDER | LLFace::LIGHT);
 
             if (fullbright || (mMaterial == LL_MCODE_LIGHT))
@@ -1645,9 +1659,9 @@ void LLVOVolume::updateFaceFlags()
     }
 }
 
-BOOL LLVOVolume::setParent(LLViewerObject* parent)
+bool LLVOVolume::setParent(LLViewerObject* parent)
 {
-    BOOL ret = FALSE ;
+    bool ret = false ;
     LLViewerObject *old_parent = (LLViewerObject*) getParent();
     if (parent != old_parent)
     {
@@ -1668,7 +1682,7 @@ void LLVOVolume::regenFaces()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME;
     // remove existing faces
-    BOOL count_changed = mNumFaces != getNumTEs();
+    bool count_changed = mNumFaces != getNumTEs();
 
     if (count_changed)
     {
@@ -1712,17 +1726,17 @@ void LLVOVolume::regenFaces()
     }
 }
 
-BOOL LLVOVolume::genBBoxes(BOOL force_global, BOOL should_update_octree_bounds)
+bool LLVOVolume::genBBoxes(bool force_global, bool should_update_octree_bounds)
 {
     LL_PROFILE_ZONE_SCOPED;
-    BOOL res = TRUE;
+    bool res = true;
 
     LLVector4a min, max;
 
     min.clear();
     max.clear();
 
-    BOOL rebuild = mDrawable->isState(LLDrawable::REBUILD_VOLUME | LLDrawable::REBUILD_POSITION | LLDrawable::REBUILD_RIGGED);
+    bool rebuild = mDrawable->isState(LLDrawable::REBUILD_VOLUME | LLDrawable::REBUILD_POSITION | LLDrawable::REBUILD_RIGGED);
 
     if (getRiggedVolume())
     {
@@ -1758,7 +1772,7 @@ BOOL LLVOVolume::genBBoxes(BOOL force_global, BOOL should_update_octree_bounds)
             continue;
         }
 
-        BOOL face_res = face->genVolumeBBoxes(*volume, i,
+        bool face_res = face->genVolumeBBoxes(*volume, i,
             mRelativeXform,
             (mVolumeImpl && mVolumeImpl->isVolumeGlobal()) || force_global);
         res &= face_res; // note that this result is never used
@@ -1952,7 +1966,7 @@ void LLVOVolume::updateRelativeXform(bool force_identity)
     }
 }
 
-bool LLVOVolume::lodOrSculptChanged(LLDrawable *drawable, BOOL &compiled, BOOL &should_update_octree_bounds)
+bool LLVOVolume::lodOrSculptChanged(LLDrawable *drawable, bool &compiled, bool &should_update_octree_bounds)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME;
     bool regen_faces = false;
@@ -1983,7 +1997,7 @@ bool LLVOVolume::lodOrSculptChanged(LLDrawable *drawable, BOOL &compiled, BOOL &
             updateVisualComplexity();
         }
 
-        compiled = TRUE;
+        compiled = true;
         // new_lod > old_lod breaks a feedback loop between LOD updates and
         // bounding box updates.
         should_update_octree_bounds = should_update_octree_bounds || mSculptChanged || new_lod > old_lod;
@@ -2019,20 +2033,21 @@ bool LLVOVolume::lodOrSculptChanged(LLDrawable *drawable, BOOL &compiled, BOOL &
     return regen_faces;
 }
 
-BOOL LLVOVolume::updateGeometry(LLDrawable *drawable)
+bool LLVOVolume::updateGeometry(LLDrawable *drawable)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME;
 
     if (mDrawable->isState(LLDrawable::REBUILD_RIGGED))
     {
+        LL_PROFILE_ZONE_NAMED_CATEGORY_VOLUME("rebuild rigged");
         updateRiggedVolume(false);
-        genBBoxes(FALSE);
+        genBBoxes(false);
         mDrawable->clearState(LLDrawable::REBUILD_RIGGED);
     }
 
     if (mVolumeImpl != NULL)
     {
-        BOOL res;
+        bool res;
         {
             res = mVolumeImpl->doUpdateGeometry(drawable);
         }
@@ -2050,13 +2065,13 @@ BOOL LLVOVolume::updateGeometry(LLDrawable *drawable)
 
     if (mDrawable.isNull()) // Not sure why this is happening, but it is...
     {
-        return TRUE; // No update to complete
+        return true; // No update to complete
     }
 
-    BOOL compiled = FALSE;
+    bool compiled = false;
     // This should be true in most cases, unless we're sure no octree update is
     // needed.
-    BOOL should_update_octree_bounds = bool(getRiggedVolume()) || mDrawable->isState(LLDrawable::REBUILD_POSITION) || !mDrawable->getSpatialExtents()->isFinite3();
+    bool should_update_octree_bounds = bool(getRiggedVolume()) || mDrawable->isState(LLDrawable::REBUILD_POSITION) || !mDrawable->getSpatialExtents()->isFinite3();
 
     if (mVolumeChanged || mFaceMappingChanged)
     {
@@ -2072,7 +2087,7 @@ BOOL LLVOVolume::updateGeometry(LLDrawable *drawable)
         }
         else if (mSculptChanged || mLODChanged || mColorChanged)
         {
-            compiled = TRUE;
+            compiled = true;
             was_regen_faces = lodOrSculptChanged(drawable, compiled, should_update_octree_bounds);
         }
 
@@ -2083,7 +2098,7 @@ BOOL LLVOVolume::updateGeometry(LLDrawable *drawable)
     else if (mLODChanged || mSculptChanged || mColorChanged)
     {
         dirtySpatialGroup();
-        compiled = TRUE;
+        compiled = true;
         lodOrSculptChanged(drawable, compiled, should_update_octree_bounds);
 
         if(drawable->isState(LLDrawable::REBUILD_RIGGED | LLDrawable::RIGGED))
@@ -2094,13 +2109,13 @@ BOOL LLVOVolume::updateGeometry(LLDrawable *drawable)
     // it has its own drawable (it's moved) or it has changed UVs or it has changed xforms from global<->local
     else
     {
-        compiled = TRUE;
+        compiled = true;
         // All it did was move or we changed the texture coordinate offset
     }
 
     // Generate bounding boxes if needed, and update the object's size in the
     // octree
-    genBBoxes(FALSE, should_update_octree_bounds);
+    genBBoxes(false, should_update_octree_bounds);
 
     // Update face flags
     updateFaceFlags();
@@ -2110,11 +2125,11 @@ BOOL LLVOVolume::updateGeometry(LLDrawable *drawable)
         LLPipeline::sCompiles++;
     }
 
-    mVolumeChanged = FALSE;
-    mLODChanged = FALSE;
-    mSculptChanged = FALSE;
-    mFaceMappingChanged = FALSE;
-    mColorChanged = FALSE;
+    mVolumeChanged = false;
+    mLODChanged = false;
+    mSculptChanged = false;
+    mFaceMappingChanged = false;
+    mColorChanged = false;
 
     return LLViewerObject::updateGeometry(drawable);
 }
@@ -2143,13 +2158,13 @@ void LLVOVolume::updateFaceSize(S32 idx)
     }
 }
 
-BOOL LLVOVolume::isRootEdit() const
+bool LLVOVolume::isRootEdit() const
 {
     if (mParent && !((LLViewerObject*)mParent)->isAvatar())
     {
-        return FALSE;
+        return false;
     }
-    return TRUE;
+    return true;
 }
 
 //virtual
@@ -2170,7 +2185,7 @@ void LLVOVolume::setNumTEs(const U8 num_tes)
                 setTE(i, *te) ;
                 mMediaImplList[i] = mMediaImplList[old_num_tes -1] ;
             }
-            mMediaImplList[old_num_tes -1]->setUpdated(TRUE) ;
+            mMediaImplList[old_num_tes -1]->setUpdated(true) ;
         }
     }
     else if(old_num_tes > num_tes && mMediaImplList.size() > num_tes) //old faces removed
@@ -2196,23 +2211,23 @@ void LLVOVolume::setNumTEs(const U8 num_tes)
 //virtual
 void LLVOVolume::changeTEImage(S32 index, LLViewerTexture* imagep)
 {
-    BOOL changed = (mTEImages[index] != imagep);
+    bool changed = (mTEImages[index] != imagep);
     LLViewerObject::changeTEImage(index, imagep);
     if (changed)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
 }
 
 void LLVOVolume::setTEImage(const U8 te, LLViewerTexture *imagep)
 {
-    BOOL changed = (mTEImages[te] != imagep);
+    bool changed = (mTEImages[te] != imagep);
     LLViewerObject::setTEImage(te, imagep);
     if (changed)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
 }
 
@@ -2227,7 +2242,7 @@ S32 LLVOVolume::setTETexture(const U8 te, const LLUUID &uuid)
             shrinkWrap();
             gPipeline.markTextured(mDrawable);
         }
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return res;
 }
@@ -2252,14 +2267,14 @@ S32 LLVOVolume::setTEColor(const U8 te, const LLColor4& color)
         {
             gPipeline.markTextured(mDrawable);
             //treat this alpha change as an LoD update since render batches may need to get rebuilt
-            mLODChanged = TRUE;
+            mLODChanged = true;
             gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_VOLUME);
         }
         retval = LLPrimitive::setTEColor(te, color);
         if (mDrawable.notNull() && retval)
         {
             // These should only happen on updates which are not the initial update.
-            mColorChanged = TRUE;
+            mColorChanged = true;
             mDrawable->setState(LLDrawable::REBUILD_COLOR);
             shrinkWrap();
             dirtyMesh();
@@ -2275,7 +2290,7 @@ S32 LLVOVolume::setTEBumpmap(const U8 te, const U8 bumpmap)
     if (res)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return  res;
 }
@@ -2286,7 +2301,7 @@ S32 LLVOVolume::setTETexGen(const U8 te, const U8 texgen)
     if (res)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return  res;
 }
@@ -2297,7 +2312,7 @@ S32 LLVOVolume::setTEMediaTexGen(const U8 te, const U8 media)
     if (res)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return  res;
 }
@@ -2308,7 +2323,7 @@ S32 LLVOVolume::setTEShiny(const U8 te, const U8 shiny)
     if (res)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return  res;
 }
@@ -2319,7 +2334,7 @@ S32 LLVOVolume::setTEFullbright(const U8 te, const U8 fullbright)
     if (res)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return  res;
 }
@@ -2330,7 +2345,7 @@ S32 LLVOVolume::setTEBumpShinyFullbright(const U8 te, const U8 bump)
     if (res)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return res;
 }
@@ -2341,7 +2356,7 @@ S32 LLVOVolume::setTEMediaFlags(const U8 te, const U8 media_flags)
     if (res)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return  res;
 }
@@ -2356,7 +2371,7 @@ S32 LLVOVolume::setTEGlow(const U8 te, const F32 glow)
             gPipeline.markTextured(mDrawable);
             shrinkWrap();
         }
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return  res;
 }
@@ -2396,7 +2411,7 @@ S32 LLVOVolume::setTEMaterialID(const U8 te, const LLMaterialID& pMaterialID)
             gPipeline.markTextured(mDrawable);
             gPipeline.markRebuild(mDrawable,LLDrawable::REBUILD_ALL);
         }
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return res;
 }
@@ -2414,7 +2429,7 @@ S32 LLVOVolume::setTEMaterialParams(const U8 te, const LLMaterialPtr pMaterialPa
         gPipeline.markTextured(mDrawable);
         gPipeline.markRebuild(mDrawable,LLDrawable::REBUILD_ALL);
     }
-    mFaceMappingChanged = TRUE;
+    mFaceMappingChanged = true;
     return TEM_CHANGE_TEXTURE;
 }
 
@@ -2429,7 +2444,7 @@ S32 LLVOVolume::setTEGLTFMaterialOverride(U8 te, LLGLTFMaterial* mat)
             gPipeline.markTextured(mDrawable);
             gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_ALL);
         }
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
 
     return retval;
@@ -2442,7 +2457,7 @@ S32 LLVOVolume::setTEScale(const U8 te, const F32 s, const F32 t)
     if (res)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return res;
 }
@@ -2453,7 +2468,7 @@ S32 LLVOVolume::setTEScaleS(const U8 te, const F32 s)
     if (res)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return res;
 }
@@ -2464,7 +2479,7 @@ S32 LLVOVolume::setTEScaleT(const U8 te, const F32 t)
     if (res)
     {
         gPipeline.markTextured(mDrawable);
-        mFaceMappingChanged = TRUE;
+        mFaceMappingChanged = true;
     }
     return res;
 }
@@ -2923,7 +2938,7 @@ void LLVOVolume::addMediaImpl(LLViewerMediaImpl* media_impl, S32 texture_index)
         }
         else //the face is not available now, start media on this face later.
         {
-            media_impl->setUpdated(TRUE) ;
+            media_impl->setUpdated(true) ;
         }
     }
     return ;
@@ -2988,7 +3003,7 @@ void LLVOVolume::setLightTextureID(LLUUID id)
     {
         if (!hasLightTexture())
         {
-            setParameterEntryInUse(LLNetworkData::PARAMS_LIGHT_IMAGE, TRUE, true);
+            setParameterEntryInUse(LLNetworkData::PARAMS_LIGHT_IMAGE, true, true);
         }
         else if (old_texturep)
         {
@@ -3016,7 +3031,7 @@ void LLVOVolume::setLightTextureID(LLUUID id)
         {
             old_texturep->removeVolume(LLRender::LIGHT_TEX, this);
         }
-        setParameterEntryInUse(LLNetworkData::PARAMS_LIGHT_IMAGE, FALSE, true);
+        setParameterEntryInUse(LLNetworkData::PARAMS_LIGHT_IMAGE, false, true);
         parameterChanged(LLNetworkData::PARAMS_LIGHT_IMAGE, true);
         mLightTexture = NULL;
     }
@@ -3032,29 +3047,29 @@ void LLVOVolume::setSpotLightParams(LLVector3 params)
     }
 }
 
-void LLVOVolume::setIsLight(BOOL is_light)
+void LLVOVolume::setIsLight(bool is_light)
 {
-    BOOL was_light = getIsLight();
+    bool was_light = getIsLight();
     if (is_light != was_light)
     {
         if (is_light)
         {
-            setParameterEntryInUse(LLNetworkData::PARAMS_LIGHT, TRUE, true);
+            setParameterEntryInUse(LLNetworkData::PARAMS_LIGHT, true, true);
         }
         else
         {
-            setParameterEntryInUse(LLNetworkData::PARAMS_LIGHT, FALSE, true);
+            setParameterEntryInUse(LLNetworkData::PARAMS_LIGHT, false, true);
         }
 
         if (is_light)
         {
             // Add it to the pipeline mLightSet
-            gPipeline.setLight(mDrawable, TRUE);
+            gPipeline.setLight(mDrawable, true);
         }
         else
         {
             // Not a light.  Remove it from the pipeline's light set.
-            gPipeline.setLight(mDrawable, FALSE);
+            gPipeline.setLight(mDrawable, false);
         }
     }
 }
@@ -3074,7 +3089,7 @@ void LLVOVolume::setLightLinearColor(const LLColor3& color)
             param_block->setLinearColor(LLColor4(color, param_block->getLinearColor().mV[3]));
             parameterChanged(LLNetworkData::PARAMS_LIGHT, true);
             gPipeline.markTextured(mDrawable);
-            mFaceMappingChanged = TRUE;
+            mFaceMappingChanged = true;
         }
     }
 }
@@ -3133,7 +3148,7 @@ void LLVOVolume::setLightCutoff(F32 cutoff)
 
 //----------------------------------------------------------------------------
 
-BOOL LLVOVolume::getIsLight() const
+bool LLVOVolume::getIsLight() const
 {
     mIsLight = getParameterEntryInUse(LLNetworkData::PARAMS_LIGHT);
     return mIsLight;
@@ -3261,7 +3276,7 @@ LLViewerTexture* LLVOVolume::getLightTexture()
     {
         if (mLightTexture.isNull() || id != mLightTexture->getID())
         {
-            mLightTexture = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_NONE);
+            mLightTexture = LLViewerTextureManager::getFetchedTexture(id, FTT_DEFAULT, true, LLGLTexture::BOOST_NONE);
         }
     }
     else
@@ -3324,23 +3339,23 @@ F32 LLVOVolume::getLightCutoff() const
     }
 }
 
-BOOL LLVOVolume::isReflectionProbe() const
+bool LLVOVolume::isReflectionProbe() const
 {
     return getParameterEntryInUse(LLNetworkData::PARAMS_REFLECTION_PROBE);
 }
 
-bool LLVOVolume::setIsReflectionProbe(BOOL is_probe)
+bool LLVOVolume::setIsReflectionProbe(bool is_probe)
 {
-    BOOL was_probe = isReflectionProbe();
+    bool was_probe = isReflectionProbe();
     if (is_probe != was_probe)
     {
         if (is_probe)
         {
-            setParameterEntryInUse(LLNetworkData::PARAMS_REFLECTION_PROBE, TRUE, true);
+            setParameterEntryInUse(LLNetworkData::PARAMS_REFLECTION_PROBE, true, true);
         }
         else
         {
-            setParameterEntryInUse(LLNetworkData::PARAMS_REFLECTION_PROBE, FALSE, true);
+            setParameterEntryInUse(LLNetworkData::PARAMS_REFLECTION_PROBE, false, true);
         }
     }
 
@@ -3506,7 +3521,7 @@ U32 LLVOVolume::getVolumeInterfaceID() const
     return 0;
 }
 
-BOOL LLVOVolume::isFlexible() const
+bool LLVOVolume::isFlexible() const
 {
     if (getParameterEntryInUse(LLNetworkData::PARAMS_FLEXIBLE))
     {
@@ -3517,25 +3532,25 @@ BOOL LLVOVolume::isFlexible() const
             U8 profile_and_hole = volume_params.getProfileParams().getCurveType();
             volume_params.setType(profile_and_hole, LL_PCODE_PATH_FLEXIBLE);
         }
-        return TRUE;
+        return true;
     }
     else
     {
-        return FALSE;
+        return false;
     }
 }
 
-BOOL LLVOVolume::isSculpted() const
+bool LLVOVolume::isSculpted() const
 {
     if (getParameterEntryInUse(LLNetworkData::PARAMS_SCULPT))
     {
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLVOVolume::isMesh() const
+bool LLVOVolume::isMesh() const
 {
     if (isSculpted())
     {
@@ -3545,21 +3560,21 @@ BOOL LLVOVolume::isMesh() const
         if ((sculpt_type & LL_SCULPT_TYPE_MASK) == LL_SCULPT_TYPE_MESH)
             // mesh is a mesh
         {
-            return TRUE;
+            return true;
         }
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLVOVolume::hasLightTexture() const
+bool LLVOVolume::hasLightTexture() const
 {
     if (getParameterEntryInUse(LLNetworkData::PARAMS_LIGHT_IMAGE))
     {
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
 bool LLVOVolume::isFlexibleFast() const
@@ -3587,30 +3602,31 @@ bool LLVOVolume::isAnimatedObjectFast() const
     return mIsAnimatedObject;
 }
 
-BOOL LLVOVolume::isVolumeGlobal() const
+bool LLVOVolume::isVolumeGlobal() const
 {
     if (mVolumeImpl)
     {
-        return mVolumeImpl->isVolumeGlobal() ? TRUE : FALSE;
+        return mVolumeImpl->isVolumeGlobal();
     }
-    else if (mRiggedVolume.notNull())
+
+    if (mRiggedVolume.notNull())
     {
-        return TRUE;
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-BOOL LLVOVolume::canBeFlexible() const
+bool LLVOVolume::canBeFlexible() const
 {
     U8 path = getVolume()->getParams().getPathParams().getCurveType();
     return (path == LL_PCODE_PATH_FLEXIBLE || path == LL_PCODE_PATH_LINE);
 }
 
-BOOL LLVOVolume::setIsFlexible(BOOL is_flexible)
+bool LLVOVolume::setIsFlexible(bool is_flexible)
 {
-    BOOL res = FALSE;
-    BOOL was_flexible = isFlexible();
+    bool res = false;
+    bool was_flexible = isFlexible();
     LLVolumeParams volume_params;
     if (is_flexible)
     {
@@ -3619,10 +3635,10 @@ BOOL LLVOVolume::setIsFlexible(BOOL is_flexible)
             volume_params = getVolume()->getParams();
             U8 profile_and_hole = volume_params.getProfileParams().getCurveType();
             volume_params.setType(profile_and_hole, LL_PCODE_PATH_FLEXIBLE);
-            res = TRUE;
-            setFlags(FLAGS_USE_PHYSICS, FALSE);
-            setFlags(FLAGS_PHANTOM, TRUE);
-            setParameterEntryInUse(LLNetworkData::PARAMS_FLEXIBLE, TRUE, true);
+            res = true;
+            setFlags(FLAGS_USE_PHYSICS, false);
+            setFlags(FLAGS_PHANTOM, true);
+            setParameterEntryInUse(LLNetworkData::PARAMS_FLEXIBLE, true, true);
             if (mDrawable)
             {
                 mDrawable->makeActive();
@@ -3636,9 +3652,9 @@ BOOL LLVOVolume::setIsFlexible(BOOL is_flexible)
             volume_params = getVolume()->getParams();
             U8 profile_and_hole = volume_params.getProfileParams().getCurveType();
             volume_params.setType(profile_and_hole, LL_PCODE_PATH_LINE);
-            res = TRUE;
-            setFlags(FLAGS_PHANTOM, FALSE);
-            setParameterEntryInUse(LLNetworkData::PARAMS_FLEXIBLE, FALSE, true);
+            res = true;
+            setFlags(FLAGS_PHANTOM, false);
+            setParameterEntryInUse(LLNetworkData::PARAMS_FLEXIBLE, false, true);
         }
     }
     if (res)
@@ -3665,7 +3681,7 @@ const LLMeshSkinInfo* LLVOVolume::getSkinInfo() const
 }
 
 // virtual
-BOOL LLVOVolume::isRiggedMesh() const
+bool LLVOVolume::isRiggedMesh() const
 {
     return isMesh() && getSkinInfo();
 }
@@ -3884,7 +3900,7 @@ void LLVOVolume::generateSilhouette(LLSelectNode* nodep, const LLVector3& view_p
 
         volume->generateSilhouetteVertices(nodep->mSilhouetteVertices, nodep->mSilhouetteNormals, view_vector, trans_mat, mRelativeXformInvTrans, nodep->getTESelectMask());
 
-        nodep->mSilhouetteExists = TRUE;
+        nodep->mSilhouetteExists = true;
     }
 }
 
@@ -3911,12 +3927,12 @@ void LLVOVolume::updateRadius()
 }
 
 
-BOOL LLVOVolume::isAttachment() const
+bool LLVOVolume::isAttachment() const
 {
     return mAttachmentState != 0 ;
 }
 
-BOOL LLVOVolume::isHUDAttachment() const
+bool LLVOVolume::isHUDAttachment() const
 {
     // *NOTE: we assume hud attachment points are in defined range
     // since this range is constant for backwards compatibility
@@ -4021,7 +4037,7 @@ U32 LLVOVolume::getRenderCost(texture_cost_t &textures) const
     U32 media_faces = 0;
 
     const LLDrawable* drawablep = mDrawable;
-    U32 num_faces = drawablep->getNumFaces();
+    S32 num_faces = drawablep->getNumFaces();
 
     const LLVolumeParams& volume_params = getVolume()->getParams();
 
@@ -4377,7 +4393,7 @@ void LLVOVolume::parameterChanged(U16 param_type, bool local_origin)
     LLViewerObject::parameterChanged(param_type, local_origin);
 }
 
-void LLVOVolume::parameterChanged(U16 param_type, LLNetworkData* data, BOOL in_use, bool local_origin)
+void LLVOVolume::parameterChanged(U16 param_type, LLNetworkData* data, bool in_use, bool local_origin)
 {
     LLViewerObject::parameterChanged(param_type, data, in_use, local_origin);
     if (mVolumeImpl)
@@ -4401,7 +4417,7 @@ void LLVOVolume::parameterChanged(U16 param_type, LLNetworkData* data, BOOL in_u
     }
     if (mDrawable.notNull())
     {
-        BOOL is_light = getIsLight();
+        bool is_light = getIsLight();
         if (is_light != mDrawable->isState(LLDrawable::LIGHT))
         {
             gPipeline.setLight(mDrawable, is_light);
@@ -4442,7 +4458,7 @@ void LLVOVolume::updateReflectionProbePtr()
     }
 }
 
-void LLVOVolume::setSelected(BOOL sel)
+void LLVOVolume::setSelected(bool sel)
 {
     LLViewerObject::setSelected(sel);
     if (isAnimatedObject())
@@ -4478,7 +4494,7 @@ F32 LLVOVolume::getBinRadius()
     //const LLVector4a* ext = mDrawable->getSpatialExtents();
 
     bool shrink_wrap = mShouldShrinkWrap || mDrawable->isAnimating();
-    bool alpha_wrap = FALSE;
+    bool alpha_wrap = false;
 
     if (!isHUDAttachment() && mDrawable->mDistanceWRTCamera < alpha_distance_factor[2])
     {
@@ -4489,14 +4505,14 @@ F32 LLVOVolume::getBinRadius()
             if (face->isInAlphaPool() &&
                 !face->canRenderAsMask())
             {
-                alpha_wrap = TRUE;
+                alpha_wrap = true;
                 break;
             }
         }
     }
     else
     {
-        shrink_wrap = FALSE;
+        shrink_wrap = false;
     }
 
     if (alpha_wrap)
@@ -4558,7 +4574,7 @@ void LLVOVolume::markForUpdate()
     }
 
     LLViewerObject::markForUpdate();
-    mVolumeChanged = TRUE;
+    mVolumeChanged = true;
 }
 
 LLVector3 LLVOVolume::agentPositionToVolume(const LLVector3& pos) const
@@ -4612,31 +4628,31 @@ LLVector3 LLVOVolume::volumeDirectionToAgent(const LLVector3& dir) const
 }
 
 
-BOOL LLVOVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, S32 face, BOOL pick_transparent, BOOL pick_rigged, BOOL pick_unselectable, S32 *face_hitp,
-                                          LLVector4a* intersection,LLVector2* tex_coord, LLVector4a* normal, LLVector4a* tangent)
+bool LLVOVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, S32 face, bool pick_transparent, bool pick_rigged, bool pick_unselectable, S32 *face_hitp,
+                                      LLVector4a* intersection,LLVector2* tex_coord, LLVector4a* normal, LLVector4a* tangent)
 
 {
     if (!mbCanSelect
         || mDrawable->isDead()
         || !gPipeline.hasRenderType(mDrawable->getRenderType()))
     {
-        return FALSE;
+        return false;
     }
 
     if (!pick_unselectable)
     {
-        if (!LLSelectMgr::instance().canSelectObject(this, TRUE))
+        if (!LLSelectMgr::instance().canSelectObject(this, true))
         {
-            return FALSE;
+            return false;
         }
     }
 
     if (getClickAction() == CLICK_ACTION_IGNORE && !LLFloater::isVisible(gFloaterTools))
     {
-        return FALSE;
+        return false;
     }
 
-    BOOL ret = FALSE;
+    bool ret = false;
 
     LLVolume* volume = getVolume();
 
@@ -4652,7 +4668,7 @@ BOOL LLVOVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
         }
         else
         { //cannot pick rigged attachments on other avatars or when not in build mode
-            return FALSE;
+            return false;
         }
     }
 
@@ -4755,8 +4771,8 @@ BOOL LLVOVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
                     }
                 }
 
-                BOOL no_texture = !face->getTexture() || !face->getTexture()->hasGLTexture();
-                BOOL mask       = no_texture ? FALSE : face->getTexture()->getMask(face->surfaceToTexture(tc, p, n));
+                bool no_texture = !face->getTexture() || !face->getTexture()->hasGLTexture();
+                bool mask       = no_texture ? false : face->getTexture()->getMask(face->surfaceToTexture(tc, p, n));
                 if (face &&
                     (ignore_alpha || pick_transparent || no_texture || mask))
                 {
@@ -4821,7 +4837,7 @@ BOOL LLVOVolume::lineSegmentIntersect(const LLVector4a& start, const LLVector4a&
                         *tex_coord = tc;
                     }
 
-                    ret = TRUE;
+                    ret = true;
                 }
             }
         }
@@ -5006,7 +5022,7 @@ void LLRiggedVolume::update(
                 else
             #endif
                 {
-                    for (U32 j = 0; j < dst_face.mNumVertices; ++j)
+                    for (S32 j = 0; j < dst_face.mNumVertices; ++j)
                     {
                         LLMatrix4a final_mat;
                         LLSkinningUtil::getPerVertexSkinMatrix(weight[j].getF32ptr(), mat, false, final_mat, max_joints);
@@ -5033,7 +5049,7 @@ void LLRiggedVolume::update(
                     box_max = max;
                 }
 
-                for (U32 j = 1; j < dst_face.mNumVertices; ++j)
+                for (S32 j = 1; j < dst_face.mNumVertices; ++j)
                 {
                     min.setMin(min, pos[j]);
                     max.setMax(max, pos[j]);
@@ -5079,21 +5095,21 @@ U32 LLVOVolume::getPartitionType() const
 }
 
 LLVolumePartition::LLVolumePartition(LLViewerRegion* regionp)
-: LLSpatialPartition(LLVOVolume::VERTEX_DATA_MASK, TRUE, regionp),
+: LLSpatialPartition(LLVOVolume::VERTEX_DATA_MASK, true, regionp),
 LLVolumeGeometryManager()
 {
     mLODPeriod = 32;
-    mDepthMask = FALSE;
+    mDepthMask = false;
     mDrawableType = LLPipeline::RENDER_TYPE_VOLUME;
     mPartitionType = LLViewerRegion::PARTITION_VOLUME;
     mSlopRatio = 0.25f;
 }
 
 LLVolumeBridge::LLVolumeBridge(LLDrawable* drawablep, LLViewerRegion* regionp)
-: LLSpatialBridge(drawablep, TRUE, LLVOVolume::VERTEX_DATA_MASK, regionp),
+: LLSpatialBridge(drawablep, true, LLVOVolume::VERTEX_DATA_MASK, regionp),
 LLVolumeGeometryManager()
 {
-    mDepthMask = FALSE;
+    mDepthMask = false;
     mLODPeriod = 32;
     mDrawableType = LLPipeline::RENDER_TYPE_VOLUME;
     mPartitionType = LLViewerRegion::PARTITION_BRIDGE;
@@ -5115,30 +5131,6 @@ LLControlAVBridge::LLControlAVBridge(LLDrawable* drawablep, LLViewerRegion* regi
     mPartitionType = LLViewerRegion::PARTITION_CONTROL_AV;
 }
 
-void LLControlAVBridge::updateSpatialExtents()
-{
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWABLE
-
-    LLSpatialGroup* root = (LLSpatialGroup*)mOctree->getListener(0);
-
-    bool rootWasDirty = root->isDirty();
-
-    super::updateSpatialExtents(); // root becomes non-dirty here
-
-    // SL-18251 "On-screen animesh characters using pelvis offset animations
-    // disappear when root goes off-screen"
-    //
-    // Expand extents to include Control Avatar placed outside of the bounds
-    LLControlAvatar* controlAvatar = getVObj() ? getVObj()->getControlAvatar() : NULL;
-    if (controlAvatar
-        && controlAvatar->mDrawable
-        && controlAvatar->mDrawable->getEntry()
-        && (rootWasDirty || controlAvatar->mPlaying))
-    {
-        root->expandExtents(controlAvatar->mDrawable->getSpatialExtents(), *mDrawable->getXform());
-    }
-}
-
 bool can_batch_texture(LLFace* facep)
 {
     if (facep->getTextureEntry()->getBumpmap())
@@ -5276,7 +5268,7 @@ void LLVolumeGeometryManager::registerFace(LLSpatialGroup* group, LLFace* facep,
     //add face to drawmap
     LLSpatialGroup::drawmap_elem_t& draw_vec = group->mDrawMap[passType];
 
-    S32 idx = draw_vec.size()-1;
+    S32 idx = static_cast<S32>(draw_vec.size()) - 1;
 
     bool fullbright = (type == LLRenderPass::PASS_FULLBRIGHT) ||
         (type == LLRenderPass::PASS_INVISIBLE) ||
@@ -5360,7 +5352,7 @@ void LLVolumeGeometryManager::registerFace(LLSpatialGroup* group, LLFace* facep,
 
     if (mat)
     {
-        BOOL is_alpha = (facep->getPoolType() == LLDrawPool::POOL_ALPHA) || (te->getColor().mV[3] < 0.999f) ? TRUE : FALSE;
+        bool is_alpha = (facep->getPoolType() == LLDrawPool::POOL_ALPHA) || (te->getColor().mV[3] < 0.999f);
         if (type == LLRenderPass::PASS_ALPHA)
         {
             shader_mask = mat->getShaderMask(LLMaterial::DIFFUSE_ALPHA_MODE_BLEND, is_alpha);
@@ -5644,7 +5636,7 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 
             LLVOVolume* vobj = drawablep->getVOVolume();
 
-            if (!vobj || vobj->isDead())
+            if (!vobj || vobj->isDead() || vobj->mGLTFAsset)
             {
                 continue;
             }
@@ -5825,7 +5817,7 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
                         }
                     }
 
-                    BOOL force_simple = (facep->getPixelArea() < FORCE_SIMPLE_RENDER_AREA);
+                    bool force_simple = (facep->getPixelArea() < FORCE_SIMPLE_RENDER_AREA);
                     U32 type = gPipeline.getPoolTypeFromTE(te, tex);
                     if (is_pbr && gltf_mat && gltf_mat->mAlphaMode != LLGLTFMaterial::ALPHA_MODE_BLEND)
                     {
@@ -6010,7 +6002,7 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
         pbr_mask = pbr_mask | LLVertexBuffer::MAP_EMISSIVE;
     }
 
-    BOOL batch_textures = LLViewerShaderMgr::instance()->getShaderLevel(LLViewerShaderMgr::SHADER_OBJECT) > 1;
+    bool batch_textures = LLViewerShaderMgr::instance()->getShaderLevel(LLViewerShaderMgr::SHADER_OBJECT) > 1;
 
     // add extra vertex data for deferred rendering (not necessarily for batching textures)
     if (batch_textures)
@@ -6027,22 +6019,22 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 
     // generate render batches for static geometry
     U32 extra_mask = LLVertexBuffer::MAP_TEXTURE_INDEX;
-    BOOL alpha_sort = TRUE;
-    BOOL rigged = FALSE;
+    bool alpha_sort = true;
+    bool rigged = false;
     for (int i = 0; i < 2; ++i) //two sets, static and rigged)
     {
-        geometryBytes += genDrawInfo(group, simple_mask | extra_mask, sSimpleFaces[i], simple_count[i], FALSE, batch_textures, rigged);
-        geometryBytes += genDrawInfo(group, fullbright_mask | extra_mask, sFullbrightFaces[i], fullbright_count[i], FALSE, batch_textures, rigged);
+        geometryBytes += genDrawInfo(group, simple_mask | extra_mask, sSimpleFaces[i], simple_count[i], false, batch_textures, rigged);
+        geometryBytes += genDrawInfo(group, fullbright_mask | extra_mask, sFullbrightFaces[i], fullbright_count[i], false, batch_textures, rigged);
         geometryBytes += genDrawInfo(group, alpha_mask | extra_mask, sAlphaFaces[i], alpha_count[i], alpha_sort, batch_textures, rigged);
-        geometryBytes += genDrawInfo(group, bump_mask | extra_mask, sBumpFaces[i], bump_count[i], FALSE, FALSE, rigged);
-        geometryBytes += genDrawInfo(group, norm_mask | extra_mask, sNormFaces[i], norm_count[i], FALSE, FALSE, rigged);
-        geometryBytes += genDrawInfo(group, spec_mask | extra_mask, sSpecFaces[i], spec_count[i], FALSE, FALSE, rigged);
-        geometryBytes += genDrawInfo(group, normspec_mask | extra_mask, sNormSpecFaces[i], normspec_count[i], FALSE, FALSE, rigged);
-        geometryBytes += genDrawInfo(group, pbr_mask | extra_mask, sPbrFaces[i], pbr_count[i], FALSE, FALSE, rigged);
+        geometryBytes += genDrawInfo(group, bump_mask | extra_mask, sBumpFaces[i], bump_count[i], false, false, rigged);
+        geometryBytes += genDrawInfo(group, norm_mask | extra_mask, sNormFaces[i], norm_count[i], false, false, rigged);
+        geometryBytes += genDrawInfo(group, spec_mask | extra_mask, sSpecFaces[i], spec_count[i], false, false, rigged);
+        geometryBytes += genDrawInfo(group, normspec_mask | extra_mask, sNormSpecFaces[i], normspec_count[i], false, false, rigged);
+        geometryBytes += genDrawInfo(group, pbr_mask | extra_mask, sPbrFaces[i], pbr_count[i], false, false, rigged);
 
         // for rigged set, add weights and disable alpha sorting (rigged items use depth buffer)
         extra_mask |= LLVertexBuffer::MAP_WEIGHT4;
-        rigged = TRUE;
+        rigged = true;
     }
 
     group->mGeometryBytes = geometryBytes;
@@ -6212,7 +6204,7 @@ struct CompareBatchBreakerRigged
     }
 };
 
-U32 LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace** faces, U32 face_count, BOOL distance_sort, BOOL batch_textures, BOOL rigged)
+U32 LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace** faces, U32 face_count, bool distance_sort, bool batch_textures, bool rigged)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_VOLUME;
 
@@ -6492,11 +6484,11 @@ U32 LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace
 
             //append face to appropriate render batch
 
-            BOOL force_simple = facep->getPixelArea() < FORCE_SIMPLE_RENDER_AREA;
-            BOOL fullbright = facep->isState(LLFace::FULLBRIGHT);
+            bool force_simple = facep->getPixelArea() < FORCE_SIMPLE_RENDER_AREA;
+            bool fullbright = facep->isState(LLFace::FULLBRIGHT);
             if ((mask & LLVertexBuffer::MAP_NORMAL) == 0)
             { //paranoia check to make sure GL doesn't try to read non-existant normals
-                fullbright = TRUE;
+                fullbright = true;
             }
 
             const LLTextureEntry* te = facep->getTextureEntry();
@@ -6504,12 +6496,12 @@ U32 LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace
 
             if (hud_group && gltf_mat == nullptr)
             { //all hud attachments are fullbright
-                fullbright = TRUE;
+                fullbright = true;
             }
 
             tex = facep->getTexture();
 
-            BOOL is_alpha = (facep->getPoolType() == LLDrawPool::POOL_ALPHA) ? TRUE : FALSE;
+            bool is_alpha = facep->getPoolType() == LLDrawPool::POOL_ALPHA;
 
             LLMaterial* mat = nullptr;
             bool can_be_shiny = false;
@@ -6535,7 +6527,7 @@ U32 LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, LLFace
 
             if (!gltf_mat)
             {
-                is_alpha = (is_alpha || blinn_phong_transparent) ? TRUE : FALSE;
+                is_alpha |= blinn_phong_transparent;
             }
 
             if (gltf_mat || (mat && !hud_group))
diff --git a/indra/newview/llvovolume.h b/indra/newview/llvovolume.h
index 44a964a363..07e02e042c 100644
--- a/indra/newview/llvovolume.h
+++ b/indra/newview/llvovolume.h
@@ -85,11 +85,11 @@ public:
     virtual ~LLVolumeInterface() { }
     virtual LLVolumeInterfaceType getInterfaceType() const = 0;
     virtual void doIdleUpdate() = 0;
-    virtual BOOL doUpdateGeometry(LLDrawable *drawable) = 0;
+    virtual bool doUpdateGeometry(LLDrawable *drawable) = 0;
     virtual LLVector3 getPivotPosition() const = 0;
     virtual void onSetVolume(const LLVolumeParams &volume_params, const S32 detail) = 0;
-    virtual void onSetScale(const LLVector3 &scale, BOOL damped) = 0;
-    virtual void onParameterChanged(U16 param_type, LLNetworkData *data, BOOL in_use, bool local_origin) = 0;
+    virtual void onSetScale(const LLVector3 &scale, bool damped) = 0;
+    virtual void onParameterChanged(U16 param_type, LLNetworkData *data, bool in_use, bool local_origin) = 0;
     virtual void onShift(const LLVector4a &shift_vector) = 0;
     virtual bool isVolumeUnique() const = 0; // Do we need a unique LLVolume instance?
     virtual bool isVolumeGlobal() const = 0; // Are we in global space?
@@ -131,16 +131,16 @@ public:
 
                 void    animateTextures();
 
-                BOOL    isVisible() const ;
-    BOOL isActive() const override;
-    BOOL isAttachment() const override;
-    BOOL isRootEdit() const override; // overridden for sake of attachments treating themselves as a root object
-    BOOL isHUDAttachment() const override;
+                bool    isVisible() const ;
+    bool isActive() const override;
+    bool isAttachment() const override;
+    bool isRootEdit() const override; // overridden for sake of attachments treating themselves as a root object
+    bool isHUDAttachment() const override;
 
                 void    generateSilhouette(LLSelectNode* nodep, const LLVector3& view_point);
-    /*virtual*/ BOOL    setParent(LLViewerObject* parent) override;
+    /*virtual*/ bool    setParent(LLViewerObject* parent) override;
                 S32     getLOD() const override             { return mLOD; }
-                void    setNoLOD()                          { mLOD = NO_LOD; mLODChanged = TRUE; }
+                void    setNoLOD()                          { mLOD = NO_LOD; mLODChanged = true; }
                 bool    isNoLOD() const                     { return NO_LOD == mLOD; }
     const LLVector3     getPivotPositionAgent() const override;
     const LLMatrix4&    getRelativeXform() const                { return mRelativeXform; }
@@ -156,11 +156,11 @@ public:
 
     /*virtual*/ U32     getTriangleCount(S32* vcount = NULL) const override;
     /*virtual*/ U32     getHighLODTriangleCount() override;
-    /*virtual*/ BOOL lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
+    /*virtual*/ bool lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end,
                                           S32 face = -1,                        // which face to check, -1 = ALL_SIDES
-                                          BOOL pick_transparent = FALSE,
-                                          BOOL pick_rigged = FALSE,
-                                          BOOL pick_unselectable = TRUE,
+                                          bool pick_transparent = false,
+                                          bool pick_rigged = false,
+                                          bool pick_unselectable = true,
                                           S32* face_hit = NULL,                 // which face was hit
                                           LLVector4a* intersection = NULL,       // return the intersection point
                                           LLVector2* tex_coord = NULL,          // return the texture coordinates of the intersection point
@@ -174,18 +174,18 @@ public:
                 LLVector3 volumeDirectionToAgent(const LLVector3& dir) const;
 
 
-                BOOL    getVolumeChanged() const                { return mVolumeChanged; }
+                bool    getVolumeChanged() const                { return mVolumeChanged; }
 
     F32 getVObjRadius() const override              { return mVObjRadius; };
                 const LLMatrix4& getWorldMatrix(LLXformMatrix* xform) const override;
 
                 void    markForUpdate() override;
-                void    faceMappingChanged() override           { mFaceMappingChanged=TRUE; }
+                void    faceMappingChanged() override           { mFaceMappingChanged=true; }
 
     /*virtual*/ void    onShift(const LLVector4a &shift_vector) override; // Called when the drawable shifts
 
     /*virtual*/ void    parameterChanged(U16 param_type, bool local_origin) override;
-    /*virtual*/ void    parameterChanged(U16 param_type, LLNetworkData* data, BOOL in_use, bool local_origin) override;
+    /*virtual*/ void    parameterChanged(U16 param_type, LLNetworkData* data, bool in_use, bool local_origin) override;
 
     // update mReflectionProbe based on isReflectionProbe()
     void updateReflectionProbePtr();
@@ -195,10 +195,10 @@ public:
                                             U32 block_num, const EObjectUpdateType update_type,
                                             LLDataPacker *dp) override;
 
-    /*virtual*/ void    setSelected(BOOL sel) override;
-    /*virtual*/ BOOL    setDrawableParent(LLDrawable* parentp) override;
+    /*virtual*/ void    setSelected(bool sel) override;
+    /*virtual*/ bool    setDrawableParent(LLDrawable* parentp) override;
 
-    /*virtual*/ void    setScale(const LLVector3 &scale, BOOL damped) override;
+    /*virtual*/ void    setScale(const LLVector3 &scale, bool damped) override;
 
     /*virtual*/ void    changeTEImage(S32 index, LLViewerTexture* new_image) override;
     /*virtual*/ void    setNumTEs(const U8 num_tes) override;
@@ -223,11 +223,11 @@ public:
     /*virtual*/ S32     setTEScaleT(const U8 te, const F32 t) override;
     /*virtual*/ S32     setTETexGen(const U8 te, const U8 texgen) override;
     /*virtual*/ S32     setTEMediaTexGen(const U8 te, const U8 media) override;
-    /*virtual*/ BOOL    setMaterial(const U8 material) override;
+    /*virtual*/ bool    setMaterial(const U8 material) override;
 
                 void    setTexture(const S32 face);
                 S32     getIndexInTex(U32 ch) const {return mIndexInTex[ch];}
-    /*virtual*/ BOOL    setVolume(const LLVolumeParams &volume_params, const S32 detail, bool unique_volume = false) override;
+    /*virtual*/ bool    setVolume(const LLVolumeParams &volume_params, const S32 detail, bool unique_volume = false) override;
                 void    updateSculptTexture();
                 void    setIndexInTex(U32 ch, S32 index) { mIndexInTex[ch] = index ;}
                 void    sculpt();
@@ -236,16 +236,16 @@ public:
                                                  void* user_data, S32 status, LLExtStat ext_status);
 
                 void    updateRelativeXform(bool force_identity = false);
-    /*virtual*/ BOOL    updateGeometry(LLDrawable *drawable) override;
+    /*virtual*/ bool    updateGeometry(LLDrawable *drawable) override;
     /*virtual*/ void    updateFaceSize(S32 idx) override;
-    /*virtual*/ BOOL    updateLOD() override;
+    /*virtual*/ bool    updateLOD() override;
                 void    updateRadius() override;
     /*virtual*/ void    updateTextures() override;
                 void    updateTextureVirtualSize(bool forced = false);
 
                 void    updateFaceFlags();
                 void    regenFaces();
-                BOOL    genBBoxes(BOOL force_global, BOOL should_update_octree_bounds = TRUE);
+                bool    genBBoxes(bool force_global, bool should_update_octree_bounds = true);
                 void    preRebuild();
     virtual     void    updateSpatialExtents(LLVector4a& min, LLVector4a& max) override;
     virtual     F32     getBinRadius() override;
@@ -253,7 +253,7 @@ public:
     virtual U32 getPartitionType() const override;
 
     // For Lights
-    void setIsLight(BOOL is_light);
+    void setIsLight(bool is_light);
     //set the gamma-corrected (sRGB) color of this light
     void setLightSRGBColor(const LLColor3& color);
     //set the linear color of this light
@@ -266,7 +266,7 @@ public:
     void setLightTextureID(LLUUID id);
     void setSpotLightParams(LLVector3 params);
 
-    BOOL getIsLight() const;
+    bool getIsLight() const;
     bool getIsLightFast() const;
 
 
@@ -296,27 +296,27 @@ public:
     F32 getLightCutoff() const;
 
     // Reflection Probes
-    bool setIsReflectionProbe(BOOL is_probe);
+    bool setIsReflectionProbe(bool is_probe);
     bool setReflectionProbeAmbiance(F32 ambiance);
     bool setReflectionProbeNearClip(F32 near_clip);
     bool setReflectionProbeIsBox(bool is_box);
     bool setReflectionProbeIsDynamic(bool is_dynamic);
     bool setReflectionProbeIsMirror(bool is_mirror);
 
-    BOOL isReflectionProbe() const override;
+    bool isReflectionProbe() const override;
     F32 getReflectionProbeAmbiance() const;
     F32 getReflectionProbeNearClip() const;
-    bool getReflectionProbeIsBox() const;
+    bool getReflectionProbeIsBox() const override;
     bool getReflectionProbeIsDynamic() const;
     bool getReflectionProbeIsMirror() const;
 
     // Flexible Objects
     U32 getVolumeInterfaceID() const;
-    virtual BOOL isFlexible() const override;
-    virtual BOOL isSculpted() const override;
-    virtual BOOL isMesh() const override;
-    virtual BOOL isRiggedMesh() const override;
-    virtual BOOL hasLightTexture() const override;
+    virtual bool isFlexible() const override;
+    virtual bool isSculpted() const override;
+    virtual bool isMesh() const override;
+    virtual bool isRiggedMesh() const override;
+    virtual bool hasLightTexture() const override;
 
     // fast variants above that use state that is filled in later
     //  not reliable early in the life of an object, but should be used after
@@ -327,9 +327,9 @@ public:
     bool isRiggedMeshFast() const;
     bool isAnimatedObjectFast() const;
 
-    BOOL isVolumeGlobal() const;
-    BOOL canBeFlexible() const;
-    BOOL setIsFlexible(BOOL is_flexible);
+    bool isVolumeGlobal() const;
+    bool canBeFlexible() const;
+    bool setIsFlexible(bool is_flexible);
 
     const LLMeshSkinInfo* getSkinInfo() const;
     const bool isSkinInfoUnavaliable() const { return mSkinInfoUnavaliable; }
@@ -422,7 +422,7 @@ public:
 
 protected:
     S32 computeLODDetail(F32 distance, F32 radius, F32 lod_factor);
-    BOOL calcLOD();
+    bool calcLOD();
     LLFace* addFace(S32 face_index);
 
     // stats tracking for render complexity
@@ -436,7 +436,7 @@ protected:
     void removeMediaImpl(S32 texture_index) ;
 
 private:
-    bool lodOrSculptChanged(LLDrawable *drawable, BOOL &compiled, BOOL &shouldUpdateOctreeBounds);
+    bool lodOrSculptChanged(LLDrawable *drawable, bool &compiled, bool &shouldUpdateOctreeBounds);
 
 public:
 
@@ -452,16 +452,16 @@ private:
     friend class LLDrawable;
     friend class LLFace;
 
-    BOOL        mFaceMappingChanged;
+    bool        mFaceMappingChanged;
     LLFrameTimer mTextureUpdateTimer;
     S32         mLOD;
-    BOOL        mLODChanged;
-    BOOL        mSculptChanged;
-    BOOL        mColorChanged;
+    bool        mLODChanged;
+    bool        mSculptChanged;
+    bool        mColorChanged;
     F32         mSpotLightPriority;
     LLMatrix4   mRelativeXform;
     LLMatrix3   mRelativeXformInvTrans;
-    BOOL        mVolumeChanged;
+    bool        mVolumeChanged;
     F32         mVObjRadius;
     LLVolumeInterface *mVolumeImpl;
     LLPointer<LLViewerFetchedTexture> mSculptTexture;
diff --git a/indra/newview/llvowater.cpp b/indra/newview/llvowater.cpp
index b2af6c70d3..34040e1aca 100644
--- a/indra/newview/llvowater.cpp
+++ b/indra/newview/llvowater.cpp
@@ -56,11 +56,11 @@ LLVOWater::LLVOWater(const LLUUID &id,
     mRenderType(LLPipeline::RENDER_TYPE_WATER)
 {
     // Terrain must draw during selection passes so it can block objects behind it.
-    mbCanSelect = FALSE;
+    mbCanSelect = false;
     setScale(LLVector3(256.f, 256.f, 0.f)); // Hack for setting scale for bounding boxes/visibility.
 
-    mUseTexture = TRUE;
-    mIsEdgePatch = FALSE;
+    mUseTexture = true;
+    mIsEdgePatch = false;
 }
 
 
@@ -70,9 +70,9 @@ void LLVOWater::markDead()
 }
 
 
-BOOL LLVOWater::isActive() const
+bool LLVOWater::isActive() const
 {
-    return FALSE;
+    return false;
 }
 
 
@@ -96,7 +96,7 @@ void  LLVOWater::idleUpdate(LLAgent &agent, const F64 &time)
 LLDrawable *LLVOWater::createDrawable(LLPipeline *pipeline)
 {
     pipeline->allocDrawable(this);
-    mDrawable->setLit(FALSE);
+    mDrawable->setLit(false);
     mDrawable->setRenderType(mRenderType);
 
     LLDrawPoolWater *pool = (LLDrawPoolWater*) gPipeline.getPool(LLDrawPool::POOL_WATER);
@@ -113,7 +113,7 @@ LLDrawable *LLVOWater::createDrawable(LLPipeline *pipeline)
     return mDrawable;
 }
 
-BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
+bool LLVOWater::updateGeometry(LLDrawable *drawable)
 {
     LL_PROFILE_ZONE_SCOPED;
     LLFace *face;
@@ -126,7 +126,7 @@ BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
     face = drawable->getFace(0);
     if (!face)
     {
-        return TRUE;
+        return true;
     }
 
 //  LLVector2 uvs[4];
@@ -231,7 +231,7 @@ BOOL LLVOWater::updateGeometry(LLDrawable *drawable)
 
     mDrawable->movePartition();
     LLPipeline::sCompiles++;
-    return TRUE;
+    return true;
 }
 
 void LLVOWater::initClass()
@@ -249,12 +249,12 @@ void setVecZ(LLVector3& v)
     v.mV[VZ] = 1;
 }
 
-void LLVOWater::setUseTexture(const BOOL use_texture)
+void LLVOWater::setUseTexture(const bool use_texture)
 {
     mUseTexture = use_texture;
 }
 
-void LLVOWater::setIsEdgePatch(const BOOL edge_patch)
+void LLVOWater::setIsEdgePatch(const bool edge_patch)
 {
     mIsEdgePatch = edge_patch;
 }
@@ -292,16 +292,16 @@ U32 LLVOVoidWater::getPartitionType() const
 }
 
 LLWaterPartition::LLWaterPartition(LLViewerRegion* regionp)
-: LLSpatialPartition(0, FALSE, regionp)
+: LLSpatialPartition(0, false, regionp)
 {
-    mInfiniteFarClip = TRUE;
+    mInfiniteFarClip = true;
     mDrawableType = LLPipeline::RENDER_TYPE_WATER;
     mPartitionType = LLViewerRegion::PARTITION_WATER;
 }
 
 LLVoidWaterPartition::LLVoidWaterPartition(LLViewerRegion* regionp) : LLWaterPartition(regionp)
 {
-    mOcclusionEnabled = FALSE;
+    mOcclusionEnabled = false;
     mDrawableType = LLPipeline::RENDER_TYPE_VOIDWATER;
     mPartitionType = LLViewerRegion::PARTITION_VOIDWATER;
 }
diff --git a/indra/newview/llvowater.h b/indra/newview/llvowater.h
index 157a7f4891..adae86691a 100644
--- a/indra/newview/llvowater.h
+++ b/indra/newview/llvowater.h
@@ -60,7 +60,7 @@ public:
 
     /*virtual*/ void idleUpdate(LLAgent &agent, const F64 &time);
     /*virtual*/ LLDrawable* createDrawable(LLPipeline *pipeline);
-    /*virtual*/ BOOL        updateGeometry(LLDrawable *drawable);
+    /*virtual*/ bool        updateGeometry(LLDrawable *drawable);
     /*virtual*/ void        updateSpatialExtents(LLVector4a& newMin, LLVector4a& newMax);
 
     /*virtual*/ void updateTextures();
@@ -68,16 +68,16 @@ public:
 
     virtual U32 getPartitionType() const;
 
-    /*virtual*/ BOOL isActive() const; // Whether this object needs to do an idleUpdate.
+    /*virtual*/ bool isActive() const; // Whether this object needs to do an idleUpdate.
 
-    void setUseTexture(const BOOL use_texture);
-    void setIsEdgePatch(const BOOL edge_patch);
-    BOOL getUseTexture() const { return mUseTexture; }
-    BOOL getIsEdgePatch() const { return mIsEdgePatch; }
+    void setUseTexture(const bool use_texture);
+    void setIsEdgePatch(const bool edge_patch);
+    bool getUseTexture() const { return mUseTexture; }
+    bool getIsEdgePatch() const { return mIsEdgePatch; }
 
 protected:
-    BOOL mUseTexture;
-    BOOL mIsEdgePatch;
+    bool mUseTexture;
+    bool mIsEdgePatch;
     S32  mRenderType;
 };
 
diff --git a/indra/newview/llvowlsky.cpp b/indra/newview/llvowlsky.cpp
index 776d65487c..b5ee42f36c 100644
--- a/indra/newview/llvowlsky.cpp
+++ b/indra/newview/llvowlsky.cpp
@@ -70,7 +70,7 @@ inline U32 LLVOWLSky::getStarsNumIndices(void)
 }
 
 LLVOWLSky::LLVOWLSky(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
-    : LLStaticViewerObject(id, pcode, regionp, TRUE)
+    : LLStaticViewerObject(id, pcode, regionp, true)
 {
     initStars();
 }
@@ -80,9 +80,9 @@ void LLVOWLSky::idleUpdate(LLAgent &agent, const F64 &time)
 
 }
 
-BOOL LLVOWLSky::isActive(void) const
+bool LLVOWLSky::isActive(void) const
 {
-    return FALSE;
+    return false;
 }
 
 LLDrawable * LLVOWLSky::createDrawable(LLPipeline * pipeline)
@@ -142,7 +142,7 @@ void LLVOWLSky::restoreGL()
     gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_ALL);
 }
 
-BOOL LLVOWLSky::updateGeometry(LLDrawable * drawable)
+bool LLVOWLSky::updateGeometry(LLDrawable * drawable)
 {
     LL_PROFILE_ZONE_SCOPED;
     LLStrider<LLVector3>    vertices;
@@ -158,7 +158,7 @@ BOOL LLVOWLSky::updateGeometry(LLDrawable * drawable)
             LL_WARNS() << "Failed to allocate Vertex Buffer on full screen sky update" << LL_ENDL;
         }
 
-        BOOL success = mFsSkyVerts->getVertexStrider(vertices)
+        bool success = mFsSkyVerts->getVertexStrider(vertices)
                     && mFsSkyVerts->getTexCoord0Strider(texCoords)
                     && mFsSkyVerts->getIndexStrider(indices);
 
@@ -250,7 +250,7 @@ BOOL LLVOWLSky::updateGeometry(LLDrawable * drawable)
 #endif
 
             // lock the buffer
-            BOOL success = segment->getVertexStrider(vertices)
+            bool success = segment->getVertexStrider(vertices)
                 && segment->getTexCoord0Strider(texCoords)
                 && segment->getIndexStrider(indices);
 
@@ -280,7 +280,7 @@ BOOL LLVOWLSky::updateGeometry(LLDrawable * drawable)
 
     LLPipeline::sCompiles++;
 
-    return TRUE;
+    return true;
 }
 
 void LLVOWLSky::drawStars(void)
@@ -510,7 +510,7 @@ void LLVOWLSky::updateStarColors()
     }
 }
 
-BOOL LLVOWLSky::updateStarGeometry(LLDrawable *drawable)
+bool LLVOWLSky::updateStarGeometry(LLDrawable *drawable)
 {
     LLStrider<LLVector3> verticesp;
     LLStrider<LLColor4U> colorsp;
@@ -525,7 +525,7 @@ BOOL LLVOWLSky::updateStarGeometry(LLDrawable *drawable)
         }
     }
 
-    BOOL success = mStarsVerts->getVertexStrider(verticesp)
+    bool success = mStarsVerts->getVertexStrider(verticesp)
         && mStarsVerts->getColorStrider(colorsp)
         && mStarsVerts->getTexCoord0Strider(texcoordsp);
 
@@ -577,5 +577,5 @@ BOOL LLVOWLSky::updateStarGeometry(LLDrawable *drawable)
     }
 
     mStarsVerts->unmapBuffer();
-    return TRUE;
+    return true;
 }
diff --git a/indra/newview/llvowlsky.h b/indra/newview/llvowlsky.h
index 36093e8b32..13105c4b0d 100644
--- a/indra/newview/llvowlsky.h
+++ b/indra/newview/llvowlsky.h
@@ -42,9 +42,9 @@ public:
     LLVOWLSky(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp);
 
     /*virtual*/ void         idleUpdate(LLAgent &agent, const F64 &time);
-    /*virtual*/ BOOL         isActive(void) const;
+    /*virtual*/ bool         isActive(void) const;
     /*virtual*/ LLDrawable * createDrawable(LLPipeline *pipeline);
-    /*virtual*/ BOOL         updateGeometry(LLDrawable *drawable);
+    /*virtual*/ bool         updateGeometry(LLDrawable *drawable);
 
     void drawStars(void);
     void drawDome(void);
@@ -75,7 +75,7 @@ private:
     void updateStarColors();
 
     // helper function for updating the stars geometry.
-    BOOL updateStarGeometry(LLDrawable *drawable);
+    bool updateStarGeometry(LLDrawable *drawable);
 
 private:
     LLPointer<LLVertexBuffer>                   mFsSkyVerts;
diff --git a/indra/newview/llwearableitemslist.cpp b/indra/newview/llwearableitemslist.cpp
index 187c4ed638..5ee6aec9f9 100644
--- a/indra/newview/llwearableitemslist.cpp
+++ b/indra/newview/llwearableitemslist.cpp
@@ -60,10 +60,10 @@ bool LLFindOutfitItems::operator()(LLInventoryCategory* cat,
            || (item->getType() == LLAssetType::AT_OBJECT)
            || (item->getType() == LLAssetType::AT_GESTURE))
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 //////////////////////////////////////////////////////////////////////////
@@ -100,7 +100,7 @@ LLPanelWearableOutfitItem::Params::Params()
 {
 }
 
-BOOL LLPanelWearableOutfitItem::postBuild()
+bool LLPanelWearableOutfitItem::postBuild()
 {
     LLPanelWearableListItem::postBuild();
 
@@ -115,10 +115,10 @@ BOOL LLPanelWearableOutfitItem::postBuild()
         setWidgetsVisible(false);
         reshapeWidgets();
     }
-    return TRUE;
+    return true;
 }
 
-BOOL LLPanelWearableOutfitItem::handleDoubleClick(S32 x, S32 y, MASK mask)
+bool LLPanelWearableOutfitItem::handleDoubleClick(S32 x, S32 y, MASK mask)
 {
     if(!mShowWidgets)
     {
@@ -133,7 +133,7 @@ BOOL LLPanelWearableOutfitItem::handleDoubleClick(S32 x, S32 y, MASK mask)
     {
         onAddWearable();
     }
-    return TRUE;
+    return true;
 }
 
 void LLPanelWearableOutfitItem::onAddWearable()
@@ -293,7 +293,7 @@ LLPanelClothingListItem::~LLPanelClothingListItem()
 {
 }
 
-BOOL LLPanelClothingListItem::postBuild()
+bool LLPanelClothingListItem::postBuild()
 {
     LLPanelDeletableWearableListItem::postBuild();
 
@@ -305,7 +305,7 @@ BOOL LLPanelClothingListItem::postBuild()
     setWidgetsVisible(false);
     reshapeWidgets();
 
-    return TRUE;
+    return true;
 }
 
 //////////////////////////////////////////////////////////////////////////
@@ -370,7 +370,7 @@ LLPanelBodyPartsListItem::~LLPanelBodyPartsListItem()
 {
 }
 
-BOOL LLPanelBodyPartsListItem::postBuild()
+bool LLPanelBodyPartsListItem::postBuild()
 {
     LLPanelInventoryListItemBase::postBuild();
 
@@ -380,7 +380,7 @@ BOOL LLPanelBodyPartsListItem::postBuild()
     setWidgetsVisible(false);
     reshapeWidgets();
 
-    return TRUE;
+    return true;
 }
 
 static LLWidgetNameRegistry::StaticRegistrar sRegisterPanelDeletableWearableListItem(&typeid(LLPanelDeletableWearableListItem::Params), "deletable_wearable_list_item");
@@ -413,7 +413,7 @@ LLPanelDeletableWearableListItem::LLPanelDeletableWearableListItem(LLViewerInven
     setSeparatorVisible(true);
 }
 
-BOOL LLPanelDeletableWearableListItem::postBuild()
+bool LLPanelDeletableWearableListItem::postBuild()
 {
     LLPanelWearableListItem::postBuild();
 
@@ -426,7 +426,7 @@ BOOL LLPanelDeletableWearableListItem::postBuild()
     setWidgetsVisible(false);
     reshapeWidgets();
 
-    return TRUE;
+    return true;
 }
 
 
@@ -486,11 +486,11 @@ LLPanelDummyClothingListItem* LLPanelDummyClothingListItem::create(LLWearableTyp
     return list_item;
 }
 
-BOOL LLPanelDummyClothingListItem::postBuild()
+bool LLPanelDummyClothingListItem::postBuild()
 {
     addWidgetToRightSide("btn_add_panel");
 
-    setIconImage(LLInventoryIcon::getIcon(LLAssetType::AT_CLOTHING, LLInventoryType::IT_NONE, mWearableType, FALSE));
+    setIconImage(LLInventoryIcon::getIcon(LLAssetType::AT_CLOTHING, LLInventoryType::IT_NONE, mWearableType, false));
     updateItem(wearableTypeToString(mWearableType));
 
     // Make it look loke clothing item - reserve space for 'delete' button
@@ -499,7 +499,7 @@ BOOL LLPanelDummyClothingListItem::postBuild()
     setWidgetsVisible(false);
     reshapeWidgets();
 
-    return TRUE;
+    return true;
 }
 
 LLWearableType::EType LLPanelDummyClothingListItem::getWearableType() const
@@ -959,14 +959,14 @@ void LLWearableItemsList::ContextMenu::updateItemsVisibility(LLContextMenu* menu
         return;
     }
 
-    const uuid_vec_t& ids = mUUIDs; // selected items IDs
-    U32 mask = 0;                   // mask of selected items' types
-    U32 n_items = ids.size();       // number of selected items
-    U32 n_worn = 0;                 // number of worn items among the selected ones
-    U32 n_already_worn = 0;         // number of items worn of same type as selected items
-    U32 n_links = 0;                // number of links among the selected items
-    U32 n_editable = 0;             // number of editable items among the selected ones
-    U32 n_touchable = 0;            // number of touchable items among the selected ones
+    const uuid_vec_t& ids = mUUIDs;             // selected items IDs
+    U32 mask = 0;                               // mask of selected items' types
+    U32 n_items = static_cast<U32>(ids.size()); // number of selected items
+    U32 n_worn = 0;                             // number of worn items among the selected ones
+    U32 n_already_worn = 0;                     // number of items worn of same type as selected items
+    U32 n_links = 0;                            // number of links among the selected items
+    U32 n_editable = 0;                         // number of editable items among the selected ones
+    U32 n_touchable = 0;                        // number of touchable items among the selected ones
 
     bool can_be_worn = true;
 
@@ -1041,8 +1041,8 @@ void LLWearableItemsList::ContextMenu::updateItemsVisibility(LLContextMenu* menu
     setMenuItemEnabled(menu, "take_off_or_detach",  n_worn == n_items);
     setMenuItemVisible(menu, "object_profile",      !standalone);
     setMenuItemEnabled(menu, "object_profile",      n_items == 1);
-    setMenuItemVisible(menu, "--no options--",      FALSE);
-    setMenuItemEnabled(menu, "--no options--",      FALSE);
+    setMenuItemVisible(menu, "--no options--",      false);
+    setMenuItemEnabled(menu, "--no options--",      false);
 
     // Populate or hide the "Attach to..." / "Attach to HUD..." submenus.
     if (mask == MASK_ATTACHMENT && n_worn == 0)
@@ -1071,7 +1071,7 @@ void LLWearableItemsList::ContextMenu::updateItemsVisibility(LLContextMenu* menu
     }
     if (num_visible_items == 0)
     {
-        setMenuItemVisible(menu, "--no options--", TRUE);
+        setMenuItemVisible(menu, "--no options--", true);
     }
 }
 
@@ -1091,8 +1091,8 @@ void LLWearableItemsList::ContextMenu::updateItemsLabels(LLContextMenu* menu)
     menu_item->setLabel(new_label);
 }
 
-// We need this method to convert non-zero BOOL values to exactly 1 (TRUE).
-// Otherwise code relying on a BOOL value being TRUE may fail
+// We need this method to convert non-zero bool values to exactly 1 (true).
+// Otherwise code relying on a bool value being true may fail
 // (I experienced a weird assert in LLView::drawChildren() because of that.
 // static
 void LLWearableItemsList::ContextMenu::setMenuItemVisible(LLContextMenu* menu, const std::string& name, bool val)
diff --git a/indra/newview/llwearableitemslist.h b/indra/newview/llwearableitemslist.h
index 80e211ad6b..7b69711154 100644
--- a/indra/newview/llwearableitemslist.h
+++ b/indra/newview/llwearableitemslist.h
@@ -83,8 +83,8 @@ public:
         Params();
     };
 
-    BOOL postBuild();
-    BOOL handleDoubleClick(S32 x, S32 y, MASK mask);
+    bool postBuild();
+    bool handleDoubleClick(S32 x, S32 y, MASK mask);
 
     static LLPanelWearableOutfitItem* create(LLViewerInventoryItem* item,
                                              bool worn_indication_enabled,
@@ -124,7 +124,7 @@ public:
 
     virtual ~LLPanelDeletableWearableListItem() {};
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     /**
      * Make button visible during mouse over event.
@@ -177,7 +177,7 @@ public:
 
     virtual ~LLPanelClothingListItem();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     /**
      * Make button visible during mouse over event.
@@ -212,7 +212,7 @@ public:
 
     virtual ~LLPanelBodyPartsListItem();
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
 
     /**
     * Make button visible during mouse over event.
@@ -241,7 +241,7 @@ public:
     };
     static LLPanelDummyClothingListItem* create(LLWearableType::EType w_type);
 
-    /*virtual*/ BOOL postBuild();
+    /*virtual*/ bool postBuild();
     LLWearableType::EType getWearableType() const;
 
 protected:
diff --git a/indra/newview/llwearablelist.cpp b/indra/newview/llwearablelist.cpp
index 5cbc158f8d..76348d4ea1 100644
--- a/indra/newview/llwearablelist.cpp
+++ b/indra/newview/llwearablelist.cpp
@@ -90,14 +90,14 @@ void LLWearableList::getAsset(const LLAssetID& assetID, const std::string& weara
             asset_type,
             LLWearableList::processGetAssetReply,
             (void*)new LLWearableArrivedData( asset_type, wearable_name, avatarp, asset_arrived_callback, userdata ),
-            TRUE);
+            true);
     }
 }
 
 // static
 void LLWearableList::processGetAssetReply( const char* filename, const LLAssetID& uuid, void* userdata, S32 status, LLExtStat ext_status )
 {
-    BOOL isNewWearable = FALSE;
+    bool isNewWearable = false;
     LLWearableArrivedData* data = (LLWearableArrivedData*) userdata;
     LLViewerWearable* wearable = NULL; // NULL indicates failure
     LLAvatarAppearance *avatarp = data->mAvatarp;
@@ -127,7 +127,7 @@ void LLWearableList::processGetAssetReply( const char* filename, const LLAssetID
             {
                 if (wearable->getType() == LLWearableType::WT_COUNT)
                 {
-                    isNewWearable = TRUE;
+                    isNewWearable = true;
                 }
                 delete wearable;
                 wearable = NULL;
diff --git a/indra/newview/llwearablelist.h b/indra/newview/llwearablelist.h
index be00c058a2..680b958b46 100644
--- a/indra/newview/llwearablelist.h
+++ b/indra/newview/llwearablelist.h
@@ -46,7 +46,7 @@ class LLWearableList : public LLSingleton<LLWearableList>
 public:
     void cleanup() ;
 
-    S32                 getLength() const { return mList.size(); }
+    S32                 getLength() const { return static_cast<S32>(mList.size()); }
 
     void                getAsset(const LLAssetID& assetID,
                                  const std::string& wearable_name,
diff --git a/indra/newview/llweb.cpp b/indra/newview/llweb.cpp
index 6c5313a3ac..d8852de954 100644
--- a/indra/newview/llweb.cpp
+++ b/indra/newview/llweb.cpp
@@ -131,8 +131,8 @@ std::string LLWeb::escapeURL(const std::string& url)
     // The CURL curl_escape() function escapes colons, slashes,
     // and all characters but A-Z and 0-9.  Do a cheesy mini-escape.
     std::string escaped_url;
-    S32 len = url.length();
-    for (S32 i = 0; i < len; i++)
+    auto len = url.length();
+    for (size_t i = 0; i < len; i++)
     {
         char c = url[i];
         if (c == ' ')
diff --git a/indra/newview/llwebprofile.cpp b/indra/newview/llwebprofile.cpp
index 02abf1d4e3..83e417633a 100644
--- a/indra/newview/llwebprofile.cpp
+++ b/indra/newview/llwebprofile.cpp
@@ -42,7 +42,7 @@
 #include "llcorehttputil.h"
 
 // third-party
-#include "json/reader.h" // JSON
+
 
 /*
  * Workflow:
@@ -239,10 +239,12 @@ LLCore::BufferArray::ptr_t LLWebProfile::buildPostData(const LLSD &data, LLPoint
         << "Content-Disposition: form-data; name=\"file\"; filename=\"snapshot.png\"\r\n"
         << "Content-Type: image/png\r\n\r\n";
 
+    LLImageDataSharedLock lock(image);
+
     // Insert the image data.
     //char *datap = (char *)(image->getData());
     //bas.write(datap, image->getDataSize());
-    U8* image_data = image->getData();
+    const U8* image_data = image->getData();
     for (S32 i = 0; i < image->getDataSize(); ++i)
     {
         bas << image_data[i];
diff --git a/indra/newview/llwindebug.cpp b/indra/newview/llwindebug.cpp
index 8a66fca349..5cd75f7a02 100644
--- a/indra/newview/llwindebug.cpp
+++ b/indra/newview/llwindebug.cpp
@@ -30,7 +30,7 @@
 
 
 // based on dbghelp.h
-typedef BOOL (WINAPI *MINIDUMPWRITEDUMP)(HANDLE hProcess, DWORD dwPid, HANDLE hFile, MINIDUMP_TYPE DumpType,
+typedef bool (WINAPI *MINIDUMPWRITEDUMP)(HANDLE hProcess, DWORD dwPid, HANDLE hFile, MINIDUMP_TYPE DumpType,
                                     CONST PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam,
                                     CONST PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam,
                                     CONST PMINIDUMP_CALLBACK_INFORMATION CallbackParam
diff --git a/indra/newview/llwindowlistener.cpp b/indra/newview/llwindowlistener.cpp
index 87d18cfc00..6221d67b26 100644
--- a/indra/newview/llwindowlistener.cpp
+++ b/indra/newview/llwindowlistener.cpp
@@ -330,7 +330,7 @@ void LLWindowListener::keyUp(LLSD const & evt)
 }
 
 // for WhichButton
-typedef BOOL (LLWindowCallbacks::*MouseMethod)(LLWindow *, LLCoordGL, MASK);
+typedef bool (LLWindowCallbacks::*MouseMethod)(LLWindow *, LLCoordGL, MASK);
 struct Actions
 {
     Actions(const MouseMethod& d, const MouseMethod& u): down(d), up(u), valid(true) {}
diff --git a/indra/newview/llworld.cpp b/indra/newview/llworld.cpp
index 249dd10f46..2eadea20ef 100644
--- a/indra/newview/llworld.cpp
+++ b/indra/newview/llworld.cpp
@@ -107,7 +107,7 @@ LLWorld::LLWorld() :
     *(default_texture++) = MAX_WATER_COLOR.mV[2];
     *(default_texture++) = MAX_WATER_COLOR.mV[3];
 
-    mDefaultWaterTexturep = LLViewerTextureManager::getLocalTexture(raw.get(), FALSE);
+    mDefaultWaterTexturep = LLViewerTextureManager::getLocalTexture(raw.get(), false);
     gGL.getTexUnit(0)->bind(mDefaultWaterTexturep);
     mDefaultWaterTexturep->setAddressMode(LLTexUnit::TAM_CLAMP);
 
@@ -450,7 +450,7 @@ void LLWorld::updateAgentOffset(const LLVector3d &offset_global)
 }
 
 
-BOOL LLWorld::positionRegionValidGlobal(const LLVector3d &pos_global)
+bool LLWorld::positionRegionValidGlobal(const LLVector3d &pos_global)
 {
     for (region_list_t::iterator iter = mRegionList.begin();
          iter != mRegionList.end(); ++iter)
@@ -458,10 +458,10 @@ BOOL LLWorld::positionRegionValidGlobal(const LLVector3d &pos_global)
         LLViewerRegion* regionp = *iter;
         if (regionp->pointInRegionGlobal(pos_global))
         {
-            return TRUE;
+            return true;
         }
     }
-    return FALSE;
+    return false;
 }
 
 
@@ -961,7 +961,7 @@ void LLWorld::updateWaterObjects()
             if (!getRegionFromHandle(region_handle))
             {   // No region at that area, so make water
                 LLVOWater* waterp = (LLVOWater *)gObjectList.createObjectViewer(LLViewerObject::LL_VO_WATER, gAgent.getRegion());
-                waterp->setUseTexture(FALSE);
+                waterp->setUseTexture(false);
                 waterp->setPositionGlobal(LLVector3d(x + rwidth/2,
                                                      y + rwidth/2,
                                                      256.f + water_height));
@@ -1015,8 +1015,8 @@ void LLWorld::updateWaterObjects()
             mEdgeWaterObjects[dir] = (LLVOWater *)gObjectList.createObjectViewer(LLViewerObject::LL_VO_VOID_WATER,
                                                                                  gAgent.getRegion());
             waterp = mEdgeWaterObjects[dir];
-            waterp->setUseTexture(FALSE);
-            waterp->setIsEdgePatch(TRUE);
+            waterp->setUseTexture(false);
+            waterp->setIsEdgePatch(true);
             gPipeline.createObject(waterp);
         }
 
@@ -1129,7 +1129,7 @@ void process_enable_simulator(LLMessageSystem *msg, void **user_data)
     LLHost sim(ip_u32, port);
 
     // Viewer trusts the simulator.
-    msg->enableCircuit(sim, TRUE);
+    msg->enableCircuit(sim, true);
     LLWorld::getInstance()->addRegion(handle, sim);
 
     // give the simulator a message it can use to get ip and port
@@ -1259,7 +1259,7 @@ void send_agent_pause()
         gMessageSystem->sendReliable(regionp->getHost());
     }
 
-    gObjectList.mWasPaused = TRUE;
+    gObjectList.mWasPaused = true;
     LLViewerStats::instance().getRecording().stop();
 }
 
@@ -1352,8 +1352,8 @@ void LLWorld::getAvatars(uuid_vec_t* avatar_ids, std::vector<LLVector3d>* positi
     {
         LLViewerRegion* regionp = *iter;
         const LLVector3d& origin_global = regionp->getOriginGlobal();
-        S32 count = regionp->mMapAvatars.size();
-        for (S32 i = 0; i < count; i++)
+        auto count = regionp->mMapAvatars.size();
+        for (size_t i = 0; i < count; i++)
         {
             LLVector3d pos_global = unpackLocalToGlobalPosition(regionp->mMapAvatars.at(i), origin_global);
             if(dist_vec_squared(pos_global, relative_to) <= radius_squared)
diff --git a/indra/newview/llworld.h b/indra/newview/llworld.h
index fae7f58b66..01f666d19a 100644
--- a/indra/newview/llworld.h
+++ b/indra/newview/llworld.h
@@ -81,7 +81,7 @@ public:
     LLViewerRegion*         getRegionFromPosAgent(const LLVector3 &pos);
     LLViewerRegion*         getRegionFromHandle(const U64 &handle);
     LLViewerRegion*         getRegionFromID(const LLUUID& region_id);
-    BOOL                    positionRegionValidGlobal(const LLVector3d& pos);           // true if position is in valid region
+    bool                    positionRegionValidGlobal(const LLVector3d& pos);           // true if position is in valid region
     LLVector3d              clipToVisibleRegions(const LLVector3d &start_pos, const LLVector3d &end_pos);
 
     void                    updateAgentOffset(const LLVector3d &offset);
diff --git a/indra/newview/llworldmapmessage.cpp b/indra/newview/llworldmapmessage.cpp
index d4c5c04fec..c60d075e0c 100644
--- a/indra/newview/llworldmapmessage.cpp
+++ b/indra/newview/llworldmapmessage.cpp
@@ -63,7 +63,7 @@ void LLWorldMapMessage::sendItemRequest(U32 type, U64 handle)
     msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
     msg->addU32Fast(_PREHASH_Flags, LAYER_FLAG);
     msg->addU32Fast(_PREHASH_EstateID, 0); // Filled in on sim
-    msg->addBOOLFast(_PREHASH_Godlike, FALSE); // Filled in on sim
+    msg->addBOOLFast(_PREHASH_Godlike, false); // Filled in on sim
 
     msg->nextBlockFast(_PREHASH_RequestData);
     msg->addU32Fast(_PREHASH_ItemType, type);
@@ -84,7 +84,7 @@ void LLWorldMapMessage::sendNamedRegionRequest(std::string region_name)
     msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
     msg->addU32Fast(_PREHASH_Flags, LAYER_FLAG);
     msg->addU32Fast(_PREHASH_EstateID, 0); // Filled in on sim
-    msg->addBOOLFast(_PREHASH_Godlike, FALSE); // Filled in on sim
+    msg->addBOOLFast(_PREHASH_Godlike, false); // Filled in on sim
     msg->nextBlockFast(_PREHASH_NameData);
     msg->addStringFast(_PREHASH_Name, region_name);
     gAgent.sendReliableMessage();
@@ -138,7 +138,7 @@ void LLWorldMapMessage::sendMapBlockRequest(U16 min_x, U16 min_y, U16 max_x, U16
     flags |= (return_nonexistent ? 0x10000 : 0);
     msg->addU32Fast(_PREHASH_Flags, flags);
     msg->addU32Fast(_PREHASH_EstateID, 0); // Filled in on sim
-    msg->addBOOLFast(_PREHASH_Godlike, FALSE); // Filled in on sim
+    msg->addBOOLFast(_PREHASH_Godlike, false); // Filled in on sim
     msg->nextBlockFast(_PREHASH_PositionData);
     msg->addU16Fast(_PREHASH_MinX, min_x);
     msg->addU16Fast(_PREHASH_MinY, min_y);
diff --git a/indra/newview/llworldmapview.cpp b/indra/newview/llworldmapview.cpp
index 886f5663e4..09a18a9825 100755
--- a/indra/newview/llworldmapview.cpp
+++ b/indra/newview/llworldmapview.cpp
@@ -60,22 +60,22 @@
 #include "llglheaders.h"
 
 // # Constants
-static const F32 MAP_DEFAULT_SCALE = 128.f;
-static const F32 MAP_ITERP_TIME_CONSTANT = 0.75f;
-static const F32 MAP_ZOOM_ACCELERATION_TIME = 0.3f;
-static const F32 MAP_ZOOM_MAX_INTERP = 0.5f;
-static const F32 MAP_SCALE_SNAP_THRESHOLD = 0.005f;
+static constexpr F32 MAP_DEFAULT_SCALE = 128.f;
+static constexpr F32 MAP_ITERP_TIME_CONSTANT = 0.75f;
+static constexpr F32 MAP_ZOOM_ACCELERATION_TIME = 0.3f;
+static constexpr F32 MAP_ZOOM_MAX_INTERP = 0.5f;
+static constexpr F32 MAP_SCALE_SNAP_THRESHOLD = 0.005f;
 
 // Basically a C++ implementation of the OCEAN_COLOR defined in mapstitcher.py
 // Please ensure consistency between those 2 files (TODO: would be better to get that color from an asset source...)
 // OCEAN_COLOR = "#1D475F"
-const F32 OCEAN_RED   = (F32)(0x1D)/255.f;
-const F32 OCEAN_GREEN = (F32)(0x47)/255.f;
-const F32 OCEAN_BLUE  = (F32)(0x5F)/255.f;
+constexpr F32 OCEAN_RED   = (F32)(0x1D)/255.f;
+constexpr F32 OCEAN_GREEN = (F32)(0x47)/255.f;
+constexpr F32 OCEAN_BLUE  = (F32)(0x5F)/255.f;
 
-const F32 GODLY_TELEPORT_HEIGHT = 200.f;
-const F32 BIG_DOT_RADIUS = 5.f;
-BOOL LLWorldMapView::sHandledLastClick = FALSE;
+constexpr F32 GODLY_TELEPORT_HEIGHT = 200.f;
+constexpr F32 BIG_DOT_RADIUS = 5.f;
+bool LLWorldMapView::sHandledLastClick = false;
 
 LLUIImagePtr LLWorldMapView::sAvatarSmallImage = NULL;
 LLUIImagePtr LLWorldMapView::sAvatarYouImage = NULL;
@@ -174,12 +174,12 @@ void LLWorldMapView::cleanupClass()
 LLWorldMapView::LLWorldMapView() :
     LLPanel(),
     mBackgroundColor(LLColor4(OCEAN_RED, OCEAN_GREEN, OCEAN_BLUE, 1.f)),
-    mItemPicked(FALSE),
+    mItemPicked(false),
     mPanX(0.f),
     mPanY(0.f),
     mTargetPanX(0.f),
     mTargetPanY(0.f),
-    mPanning(FALSE),
+    mPanning(false),
     mMouseDownPanX(0),
     mMouseDownPanY(0),
     mMouseDownX(0),
@@ -194,7 +194,7 @@ LLWorldMapView::LLWorldMapView() :
     clearLastClick();
 }
 
-BOOL LLWorldMapView::postBuild()
+bool LLWorldMapView::postBuild()
 {
     mTextBoxNorth = getChild<LLTextBox> ("floater_map_north");
     mTextBoxEast = getChild<LLTextBox> ("floater_map_east");
@@ -325,7 +325,7 @@ void LLWorldMapView::translatePan(S32 delta_x, S32 delta_y)
 
 
 // static
-void LLWorldMapView::setPan(S32 x, S32 y, BOOL snap)
+void LLWorldMapView::setPan(S32 x, S32 y, bool snap)
 {
     mMapIterpTime = MAP_ITERP_TIME_CONSTANT;
     mTargetPanX = (F32) x;
@@ -339,18 +339,18 @@ void LLWorldMapView::setPan(S32 x, S32 y, BOOL snap)
 }
 
 // static
-void LLWorldMapView::setPanWithInterpTime(S32 x, S32 y, BOOL snap, F32 interp_time)
+void LLWorldMapView::setPanWithInterpTime(S32 x, S32 y, bool snap, F32 interp_time)
 {
     setPan(x, y, snap);
     mMapIterpTime = interp_time;
 }
 
-bool LLWorldMapView::showRegionInfo() { return (LLWorldMipmap::scaleToLevel(mMapScale) <= DRAW_SIMINFO_THRESHOLD ? true : false); }
+bool LLWorldMapView::showRegionInfo() { return LLWorldMipmap::scaleToLevel(mMapScale) <= DRAW_SIMINFO_THRESHOLD; }
 
 ///////////////////////////////////////////////////////////////////////////////////
 // HELPERS
 
-BOOL is_agent_in_region(LLViewerRegion* region, LLSimInfo* info)
+bool is_agent_in_region(LLViewerRegion* region, LLSimInfo* info)
 {
     return (region && info && info->isName(region->getName()));
 }
@@ -520,7 +520,7 @@ void LLWorldMapView::draw()
                     S32_MAX, //max_chars
                     mMapScale, //max_pixels
                     NULL,
-                    /*use_ellipses*/TRUE);
+                    /*use_ellipses*/true);
             }
         }
     }
@@ -552,7 +552,7 @@ void LLWorldMapView::draw()
     {
         drawTracking(pos_global,
                      lerp(LLColor4::yellow, LLColor4::orange, 0.4f),
-                     TRUE,
+                     true,
                      "You are here",
                      "",
                      LLFontGL::getFontSansSerifSmall()->getLineHeight()); // offset vertically by one line, to avoid overlap with target tracking
@@ -572,7 +572,7 @@ void LLWorldMapView::draw()
     LLTracker::ETrackingStatus tracking_status = LLTracker::getTrackingStatus();
     if ( LLTracker::TRACKING_AVATAR == tracking_status )
     {
-        drawTracking( LLAvatarTracker::instance().getGlobalPos(), map_track_color, TRUE, LLTracker::getLabel(), "" );
+        drawTracking( LLAvatarTracker::instance().getGlobalPos(), map_track_color, true, LLTracker::getLabel(), "" );
     }
     else if ( LLTracker::TRACKING_LANDMARK == tracking_status
               || LLTracker::TRACKING_LOCATION == tracking_status )
@@ -582,7 +582,7 @@ void LLWorldMapView::draw()
         LLVector3d pos_global = LLTracker::getTrackedPositionGlobal();
         if (!pos_global.isExactlyZero())
         {
-            drawTracking( pos_global, map_track_color, TRUE, LLTracker::getLabel(), LLTracker::getToolTip() );
+            drawTracking( pos_global, map_track_color, true, LLTracker::getLabel(), LLTracker::getToolTip() );
         }
     }
     else if (LLWorldMap::getInstance()->isTracking())
@@ -591,7 +591,7 @@ void LLWorldMapView::draw()
         {
             // We know this location to be invalid, draw a blue circle
             LLColor4 loading_color(0.0, 0.5, 1.0, 1.0);
-            drawTracking( LLWorldMap::getInstance()->getTrackedPositionGlobal(), loading_color, TRUE, getString("InvalidLocation"), "");
+            drawTracking( LLWorldMap::getInstance()->getTrackedPositionGlobal(), loading_color, true, getString("InvalidLocation"), "");
         }
         else
         {
@@ -599,7 +599,7 @@ void LLWorldMapView::draw()
             double value = fmod(current_time, 2);
             value = 0.5 + 0.5*cos(value * F_PI);
             LLColor4 loading_color(0.0, F32(value/2), F32(value), 1.0);
-            drawTracking( LLWorldMap::getInstance()->getTrackedPositionGlobal(), loading_color, TRUE, getString("Loading"), "");
+            drawTracking( LLWorldMap::getInstance()->getTrackedPositionGlobal(), loading_color, true, getString("Loading"), "");
         }
     }
 
@@ -617,7 +617,7 @@ void LLWorldMapView::draw()
 
 
 //virtual
-void LLWorldMapView::setVisible(BOOL visible)
+void LLWorldMapView::setVisible(bool visible)
 {
     LLPanel::setVisible(visible);
     if (!visible)
@@ -831,8 +831,8 @@ void LLWorldMapView::drawItems()
     bool mature_enabled = gAgent.canAccessMature();
     bool adult_enabled = gAgent.canAccessAdult();
 
-    BOOL show_mature = mature_enabled && gSavedSettings.getBOOL("ShowMatureEvents");
-    BOOL show_adult = adult_enabled && gSavedSettings.getBOOL("ShowAdultEvents");
+    bool show_mature = mature_enabled && gSavedSettings.getBOOL("ShowMatureEvents");
+    bool show_adult = adult_enabled && gSavedSettings.getBOOL("ShowAdultEvents");
 
     for (handle_list_t::iterator iter = mVisibleRegions.begin(); iter != mVisibleRegions.end(); ++iter)
     {
@@ -990,7 +990,7 @@ LLVector3 LLWorldMapView::globalPosToView( const LLVector3d& global_pos )
 }
 
 
-void LLWorldMapView::drawTracking(const LLVector3d& pos_global, const LLColor4& color, BOOL draw_arrow,
+void LLWorldMapView::drawTracking(const LLVector3d& pos_global, const LLColor4& color, bool draw_arrow,
                                   const std::string& label, const std::string& tooltip, S32 vert_offset )
 {
     LLVector3 pos_local = globalPosToView( pos_global );
@@ -1078,7 +1078,7 @@ LLVector3d LLWorldMapView::viewPosToGlobal( S32 x, S32 y )
 }
 
 
-BOOL LLWorldMapView::handleToolTip( S32 x, S32 y, MASK mask )
+bool LLWorldMapView::handleToolTip( S32 x, S32 y, MASK mask )
 {
     LLVector3d pos_global = viewPosToGlobal(x, y);
     U64 handle = to_region_handle(pos_global);
@@ -1131,7 +1131,7 @@ BOOL LLWorldMapView::handleToolTip( S32 x, S32 y, MASK mask )
             .message(tooltip_msg)
             .sticky_rect(sticky_rect_screen));
     }
-    return TRUE;
+    return true;
 }
 
 // Pass relative Z of 0 to draw at same level.
@@ -1461,7 +1461,7 @@ void LLWorldMapView::updateDirections()
 }
 
 
-void LLWorldMapView::reshape( S32 width, S32 height, BOOL called_from_parent )
+void LLWorldMapView::reshape( S32 width, S32 height, bool called_from_parent )
 {
     LLView::reshape( width, height, called_from_parent );
 }
@@ -1546,7 +1546,7 @@ void LLWorldMapView::handleClick(S32 x, S32 y, MASK mask,
                         if (checkItemHit(x, y, event, id, false))
                         {
                             *hit_type = MAP_ITEM_PG_EVENT;
-                            mItemPicked = TRUE;
+                            mItemPicked = true;
                             gFloaterWorldMap->trackEvent(event);
                             return;
                         }
@@ -1562,7 +1562,7 @@ void LLWorldMapView::handleClick(S32 x, S32 y, MASK mask,
                         if (checkItemHit(x, y, event, id, false))
                         {
                             *hit_type = MAP_ITEM_MATURE_EVENT;
-                            mItemPicked = TRUE;
+                            mItemPicked = true;
                             gFloaterWorldMap->trackEvent(event);
                             return;
                         }
@@ -1578,7 +1578,7 @@ void LLWorldMapView::handleClick(S32 x, S32 y, MASK mask,
                         if (checkItemHit(x, y, event, id, false))
                         {
                             *hit_type = MAP_ITEM_ADULT_EVENT;
-                            mItemPicked = TRUE;
+                            mItemPicked = true;
                             gFloaterWorldMap->trackEvent(event);
                             return;
                         }
@@ -1594,7 +1594,7 @@ void LLWorldMapView::handleClick(S32 x, S32 y, MASK mask,
                         if (checkItemHit(x, y, event, id, true))
                         {
                             *hit_type = MAP_ITEM_LAND_FOR_SALE;
-                            mItemPicked = TRUE;
+                            mItemPicked = true;
                             return;
                         }
                         ++it;
@@ -1611,7 +1611,7 @@ void LLWorldMapView::handleClick(S32 x, S32 y, MASK mask,
                             if (checkItemHit(x, y, event, id, true))
                             {
                                 *hit_type = MAP_ITEM_LAND_FOR_SALE_ADULT;
-                                mItemPicked = TRUE;
+                                mItemPicked = true;
                                 return;
                             }
                             ++it;
@@ -1624,13 +1624,13 @@ void LLWorldMapView::handleClick(S32 x, S32 y, MASK mask,
 
     // If we get here, we haven't clicked on anything
     gFloaterWorldMap->trackLocation(pos_global);
-    mItemPicked = FALSE;
+    mItemPicked = false;
     *id = LLUUID::null;
     return;
 }
 
 
-BOOL LLWorldMapView::handleMouseDown( S32 x, S32 y, MASK mask )
+bool LLWorldMapView::handleMouseDown( S32 x, S32 y, MASK mask )
 {
     gFocusMgr.setMouseCapture( this );
 
@@ -1638,11 +1638,11 @@ BOOL LLWorldMapView::handleMouseDown( S32 x, S32 y, MASK mask )
     mMouseDownPanY = ll_round(mPanY);
     mMouseDownX = x;
     mMouseDownY = y;
-    sHandledLastClick = TRUE;
-    return TRUE;
+    sHandledLastClick = true;
+    return true;
 }
 
-BOOL LLWorldMapView::handleMouseUp( S32 x, S32 y, MASK mask )
+bool LLWorldMapView::handleMouseUp( S32 x, S32 y, MASK mask )
 {
     if (hasMouseCapture())
     {
@@ -1658,7 +1658,7 @@ BOOL LLWorldMapView::handleMouseUp( S32 x, S32 y, MASK mask )
             LLUI::getInstance()->setMousePositionLocal(this, local_x, local_y);
 
             // finish the pan
-            mPanning = FALSE;
+            mPanning = false;
 
             mMouseDownX = 0;
             mMouseDownY = 0;
@@ -1672,9 +1672,9 @@ BOOL LLWorldMapView::handleMouseUp( S32 x, S32 y, MASK mask )
         }
         gViewerWindow->showCursor();
         gFocusMgr.setMouseCapture( NULL );
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 void LLWorldMapView::updateVisibleBlocks()
@@ -1708,7 +1708,7 @@ void LLWorldMapView::updateVisibleBlocks()
     LLWorldMap::getInstance()->updateRegions(world_left, world_bottom, world_right, world_top);
 }
 
-BOOL LLWorldMapView::handleHover( S32 x, S32 y, MASK mask )
+bool LLWorldMapView::handleHover( S32 x, S32 y, MASK mask )
 {
     if (hasMouseCapture())
     {
@@ -1717,7 +1717,7 @@ BOOL LLWorldMapView::handleHover( S32 x, S32 y, MASK mask )
             // just started panning, so hide cursor
             if (!mPanning)
             {
-                mPanning = TRUE;
+                mPanning = true;
                 gViewerWindow->hideCursor();
             }
 
@@ -1735,7 +1735,7 @@ BOOL LLWorldMapView::handleHover( S32 x, S32 y, MASK mask )
 
         // doesn't matter, cursor should be hidden
         gViewerWindow->setCursor(UI_CURSOR_CROSS );
-        return TRUE;
+        return true;
     }
     else
     {
@@ -1751,12 +1751,12 @@ BOOL LLWorldMapView::handleHover( S32 x, S32 y, MASK mask )
             gViewerWindow->setCursor( UI_CURSOR_CROSS );
         }
         LL_DEBUGS("UserInput") << "hover handled by LLWorldMapView" << LL_ENDL;
-        return TRUE;
+        return true;
     }
 }
 
 
-BOOL LLWorldMapView::handleDoubleClick( S32 x, S32 y, MASK mask )
+bool LLWorldMapView::handleDoubleClick( S32 x, S32 y, MASK mask )
 {
     if( sHandledLastClick )
     {
@@ -1820,9 +1820,9 @@ BOOL LLWorldMapView::handleDoubleClick( S32 x, S32 y, MASK mask )
             }
         };
 
-        return TRUE;
+        return true;
     }
-    return FALSE;
+    return false;
 }
 
 // static
diff --git a/indra/newview/llworldmapview.h b/indra/newview/llworldmapview.h
index fdc944d7d1..ebc9c6d738 100644
--- a/indra/newview/llworldmapview.h
+++ b/indra/newview/llworldmapview.h
@@ -53,16 +53,16 @@ public:
     LLWorldMapView();
     virtual ~LLWorldMapView();
 
-    virtual BOOL    postBuild();
+    virtual bool    postBuild();
 
-    virtual void    reshape(S32 width, S32 height, BOOL called_from_parent = TRUE );
-    virtual void    setVisible(BOOL visible);
+    virtual void    reshape(S32 width, S32 height, bool called_from_parent = true );
+    virtual void    setVisible(bool visible);
 
-    virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
-    virtual BOOL    handleDoubleClick( S32 x, S32 y, MASK mask );
-    virtual BOOL    handleHover( S32 x, S32 y, MASK mask );
-    virtual BOOL    handleToolTip( S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseDown(S32 x, S32 y, MASK mask);
+    virtual bool    handleMouseUp(S32 x, S32 y, MASK mask);
+    virtual bool    handleDoubleClick( S32 x, S32 y, MASK mask );
+    virtual bool    handleHover( S32 x, S32 y, MASK mask );
+    virtual bool    handleToolTip( S32 x, S32 y, MASK mask);
 
     bool            checkItemHit(S32 x, S32 y, LLItemInfo& item, LLUUID* id, bool track);
     void            handleClick(S32 x, S32 y, MASK mask, S32* hit_type, LLUUID* id);
@@ -79,8 +79,8 @@ public:
     static F32 getScaleSetting();
     // Pan is in pixels relative to the center of the map.
     void translatePan( S32 delta_x, S32 delta_y );
-    void setPan( S32 x, S32 y, BOOL snap = TRUE );
-    void setPanWithInterpTime(S32 x, S32 y, BOOL snap, F32 interp_time);
+    void setPan( S32 x, S32 y, bool snap = true );
+    void setPanWithInterpTime(S32 x, S32 y, bool snap, F32 interp_time);
     // Return true if the current scale level is above the threshold for accessing region info
     bool showRegionInfo();
 
@@ -102,7 +102,7 @@ public:
 
     // Draw the tracking indicator, doing the right thing if it's outside
     // the view area.
-    void            drawTracking( const LLVector3d& pos_global, const LLColor4& color, BOOL draw_arrow = TRUE,
+    void            drawTracking( const LLVector3d& pos_global, const LLColor4& color, bool draw_arrow = true,
                                   const std::string& label = std::string(), const std::string& tooltip = std::string(),
                                   S32 vert_offset = 0);
     static void     drawTrackingArrow(const LLRect& view_rect, S32 x, S32 y,
@@ -131,7 +131,7 @@ public:
                                     const std::string& second_line);
 
     // Prevents accidental double clicks
-    static void     clearLastClick() { sHandledLastClick = FALSE; }
+    static void     clearLastClick() { sHandledLastClick = false; }
 
     // if the view changes, download additional sim info as needed
     void            updateVisibleBlocks();
@@ -163,7 +163,7 @@ public:
     static LLUIImagePtr sForSaleImage;
     static LLUIImagePtr sForSaleAdultImage;
 
-    BOOL            mItemPicked;
+    bool            mItemPicked;
 
     F32 mPanX; // in pixels
     F32 mPanY; // in pixels
@@ -174,7 +174,7 @@ public:
     static bool     sVisibleTilesLoaded;
 
     // Are we mid-pan from a user drag?
-    BOOL            mPanning;
+    bool            mPanning;
     S32             mMouseDownPanX;     // value at start of drag
     S32             mMouseDownPanY;     // value at start of drag
     S32             mMouseDownX;
@@ -191,7 +191,7 @@ public:
     LLTextBox*      mTextBoxSouthWest;
     LLTextBox*      mTextBoxScrollHint;
 
-    static BOOL     sHandledLastClick;
+    static bool     sHandledLastClick;
     S32             mSelectIDStart;
 
     // Keep the list of regions that are displayed on screen. Avoids iterating through the whole region map after draw().
diff --git a/indra/newview/llworldmipmap.cpp b/indra/newview/llworldmipmap.cpp
index 31b0b9f75f..5555072e10 100644
--- a/indra/newview/llworldmipmap.cpp
+++ b/indra/newview/llworldmipmap.cpp
@@ -200,7 +200,7 @@ LLPointer<LLViewerFetchedTexture> LLWorldMipmap::loadObjectsTile(U32 grid_x, U32
     // END DEBUG
     //LL_INFOS("WorldMap") << "LLWorldMipmap::loadObjectsTile(), URL = " << imageurl << LL_ENDL;
 
-    LLPointer<LLViewerFetchedTexture> img = LLViewerTextureManager::getFetchedTextureFromUrl(imageurl, FTT_MAP_TILE, TRUE, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
+    LLPointer<LLViewerFetchedTexture> img = LLViewerTextureManager::getFetchedTextureFromUrl(imageurl, FTT_MAP_TILE, true, LLGLTexture::BOOST_NONE, LLViewerTexture::LOD_TEXTURE);
 
     if(img == nullptr)
     {
diff --git a/indra/newview/llxmlrpctransaction.cpp b/indra/newview/llxmlrpctransaction.cpp
index 5dc2df7bed..1d8253830b 100644
--- a/indra/newview/llxmlrpctransaction.cpp
+++ b/indra/newview/llxmlrpctransaction.cpp
@@ -282,7 +282,7 @@ void LLXMLRPCTransaction::Handler::onCompleted(LLCore::HttpHandle handle,
 
     body->read(0, bodydata, body->size());
 
-    mImpl->mResponse = XMLRPC_REQUEST_FromXML(bodydata, body->size(), 0);
+    mImpl->mResponse = XMLRPC_REQUEST_FromXML(bodydata, static_cast<int>(body->size()), 0);
 
     delete[] bodydata;
 
diff --git a/indra/newview/macmain.h b/indra/newview/macmain.h
deleted file mode 100644
index 866dda6a2f..0000000000
--- a/indra/newview/macmain.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/**
- * @file macmain.h
- * @brief Main Mac viewer defines
- *
- * $LicenseInfo:firstyear=2003&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-/* main.h */
-
-#define rMenuBar    128 /* menu bar */
-
-#define mApple      128 /* Apple menu */
-#define iAbout      1
-
-#define mFile       129 /* File menu */
-#define iNew        1
-#define iClose      4
-#define iQuitSeparator  10
-#define iQuit       11
-
-#define mEdit       130 /* Edit menu */
-
-#define kAboutBox   200 /* Dialog resource for About box */
-
-#define kSleepTime  32767
diff --git a/indra/newview/macview.r b/indra/newview/macview.r
deleted file mode 100755
index 8124232cf1..0000000000
--- a/indra/newview/macview.r
+++ /dev/null
@@ -1,123 +0,0 @@
-/* main.r */
-
-#include <Carbon/Carbon.r>
-#include "macmain.h"
-
-resource 'MBAR' (rMenuBar, preload) {
-        {       /* array MenuArray: 3 elements */
-                /* [1] */
-                128,
-                /* [2] */
-                129,
-                /* [3] */
-                130
-        }
-};
-
-resource 'MENU' (mApple, preload) {
-        128,
-        textMenuProc,
-        0x7FFFFFFD,
-        enabled,
-        apple,
-        {       /* array: 2 elements */
-                /* [1] */
-                "About Second Life", noIcon, noKey, noMark, plain,
-                /* [2] */
-                "-", noIcon, noKey, noMark, plain
-        }
-};
-
-resource 'MENU' (mFile, preload) {
-        129,
-        textMenuProc,
-        0x1400,
-        enabled,
-        "File",
-        {       /* array: 11 elements */
-                /* [1] */
-                "New", noIcon, "N", noMark, plain,
-                /* [2] */
-                "Open", noIcon, "O", noMark, plain,
-                /* [3] */
-                "-", noIcon, noKey, noMark, plain,
-                /* [4] */
-                "Close", noIcon, "W", noMark, plain,
-                /* [5] */
-                "Save", noIcon, "S", noMark, plain,
-                /* [6] */
-                "Save AsÉ", noIcon, noKey, noMark, plain,
-                /* [7] */
-                "-", noIcon, noKey, noMark, plain,
-                /* [8] */
-                "Page SetupÉ", noIcon, noKey, noMark, plain,
-                /* [9] */
-                "PrintÉ", noIcon, noKey, noMark, plain,
-                /* [10] */
-                "-", noIcon, noKey, noMark, plain,
-                /* [11] */
-                "Quit", noIcon, "Q", noMark, plain
-        }
-};
-
-resource 'MENU' (mEdit, preload) {
-        130,
-        textMenuProc,
-        0x0,
-        enabled,
-        "Edit",
-        {       /* array: 6 elements */
-                /* [1] */
-                "Undo", noIcon, "Z", noMark, plain,
-                /* [2] */
-                "-", noIcon, noKey, noMark, plain,
-                /* [3] */
-                "Cut", noIcon, "X", noMark, plain,
-                /* [4] */
-                "Copy", noIcon, "C", noMark, plain,
-                /* [5] */
-                "Paste", noIcon, "V", noMark, plain,
-                /* [6] */
-                "Clear", noIcon, noKey, noMark, plain
-        }
-};
-
-resource 'DITL' (kAboutBox) {
-        {       /* array DITLarray: 3 elements */
-                /* [1] */
-                {16, 21, 38, 208},
-                StaticText {
-                        disabled,
-                        "Hello hello hello..."
-                },
-                /* [2] */
-                {116, 287, 136, 345},
-                Button {
-                        enabled,
-                        "OK"
-                },
-                /* [3] */
-                {54, 139, 74, 197},
-                Button {
-                        enabled,
-                        "OK"
-                }
-        }
-};
-
-resource 'ALRT' (kAboutBox) {
-        {40, 40, 139, 280},
-        200,
-        {       /* array: 4 elements */
-                /* [1] */
-                OK, visible, sound1,
-                /* [2] */
-                OK, visible, sound1,
-                /* [3] */
-                OK, visible, sound1,
-                /* [4] */
-                OK, visible, sound1
-        },
-	noAutoCenter
-};
-
diff --git a/indra/newview/mpfloatertuning.cpp b/indra/newview/mpfloatertuning.cpp
index 66336a6c47..bfa96a8764 100644
--- a/indra/newview/mpfloatertuning.cpp
+++ b/indra/newview/mpfloatertuning.cpp
@@ -62,7 +62,7 @@ void MPFloaterTuning::syncFromPreferenceSetting(void *user_data)
     LL_INFOS() << "syncFromPreferenceSetting optBuf=" << optBuf << LL_ENDL;
 }
 
-BOOL MPFloaterTuning::postBuild()
+bool MPFloaterTuning::postBuild()
 {
     LLSliderCtrl* fpsSliderCtrl = getChild<LLSliderCtrl>("fpsSlider");
     fpsSliderCtrl->setMinValue(0);
@@ -94,4 +94,4 @@ void MPFloaterTuning::onFinalCommit()
 
 void MPFloaterTuning::onClose(bool app_quitting)
 {
-}
\ No newline at end of file
+}
diff --git a/indra/newview/mpfloatertuning.h b/indra/newview/mpfloatertuning.h
index 8812395ef3..9e9c7f174f 100644
--- a/indra/newview/mpfloatertuning.h
+++ b/indra/newview/mpfloatertuning.h
@@ -34,7 +34,7 @@ class MPFloaterTuning: public LLFloater
 public:
     MPFloaterTuning(const LLSD& key);
 
-    BOOL postBuild();
+    bool postBuild();
 
     void onFinalCommit();
 
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 8e880a2ceb..5b0a73269f 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -117,7 +117,7 @@
 #include "llenvironment.h"
 #include "llsettingsvo.h"
 
-extern BOOL gSnapshot;
+extern bool gSnapshot;
 bool gShiftFrame = false;
 
 //cached settings
@@ -213,11 +213,11 @@ const F32 DEFERRED_LIGHT_FALLOFF = 0.5f;
 const U32 DEFERRED_VB_MASK = LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_TEXCOORD0 | LLVertexBuffer::MAP_TEXCOORD1;
 
 extern S32 gBoxFrame;
-//extern BOOL gHideSelectedObjects;
-extern BOOL gDisplaySwapBuffers;
-extern BOOL gDebugGL;
-extern BOOL gCubeSnapshot;
-extern BOOL gSnapshotNoPost;
+//extern bool gHideSelectedObjects;
+extern bool gDisplaySwapBuffers;
+extern bool gDebugGL;
+extern bool gCubeSnapshot;
+extern bool gSnapshotNoPost;
 
 bool    gAvatarBacklight = false;
 
@@ -439,8 +439,8 @@ void LLPipeline::init()
     // disables non-object rendering (UI, sky, water, etc)
     if (gSavedSettings.getBOOL("RenderPerformanceTest"))
     {
-        gSavedSettings.setBOOL("RenderPerformanceTest", FALSE);
-        gSavedSettings.setBOOL("RenderPerformanceTest", TRUE);
+        gSavedSettings.setBOOL("RenderPerformanceTest", false);
+        gSavedSettings.setBOOL("RenderPerformanceTest", true);
     }
 
     mOldRenderDebugMask = mRenderDebugMask;
@@ -671,12 +671,12 @@ void LLPipeline::destroyGL()
 
 void LLPipeline::requestResizeScreenTexture()
 {
-    gResizeScreenTexture = TRUE;
+    gResizeScreenTexture = true;
 }
 
 void LLPipeline::requestResizeShadowTexture()
 {
-    gResizeShadowTexture = TRUE;
+    gResizeShadowTexture = true;
 }
 
 void LLPipeline::resizeShadowTexture()
@@ -684,7 +684,7 @@ void LLPipeline::resizeShadowTexture()
     releaseSunShadowTargets();
     releaseSpotShadowTargets();
     allocateShadowBuffer(mRT->width, mRT->height);
-    gResizeShadowTexture = FALSE;
+    gResizeShadowTexture = false;
 }
 
 void LLPipeline::resizeScreenTexture()
@@ -700,7 +700,7 @@ void LLPipeline::resizeScreenTexture()
             releaseSunShadowTargets();
             releaseSpotShadowTargets();
             allocateScreenBuffer(resX,resY);
-            gResizeScreenTexture = FALSE;
+            gResizeScreenTexture = false;
         }
     }
 }
@@ -776,14 +776,9 @@ bool LLPipeline::allocateScreenBuffer(U32 resX, U32 resY, U32 samples)
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DISPLAY;
     if (mRT == &mMainRT)
     { // hacky -- allocate auxillary buffer
-
-        gCubeSnapshot = TRUE;
-        mReflectionMapManager.initReflectionMaps();
-        mHeroProbeManager.initReflectionMaps();
-
         if (sReflectionProbesEnabled)
         {
-            gCubeSnapshot = TRUE;
+            gCubeSnapshot = true;
             mReflectionMapManager.initReflectionMaps();
         }
 
@@ -800,7 +795,7 @@ bool LLPipeline::allocateScreenBuffer(U32 resX, U32 resY, U32 samples)
         }
 
         mRT = &mMainRT;
-        gCubeSnapshot = FALSE;
+        gCubeSnapshot = false;
     }
 
     // remember these dimensions
@@ -943,7 +938,7 @@ bool LLPipeline::allocateShadowBuffer(U32 resX, U32 resY)
             LLRenderTarget* shadow_target = getSunShadowTarget(i);
             if (shadow_target)
             {
-                gGL.getTexUnit(0)->bind(getSunShadowTarget(i), TRUE);
+                gGL.getTexUnit(0)->bind(getSunShadowTarget(i), true);
                 gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_ANISOTROPIC);
                 gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_CLAMP);
 
@@ -960,7 +955,7 @@ bool LLPipeline::allocateShadowBuffer(U32 resX, U32 resY)
             LLRenderTarget* shadow_target = getSpotShadowTarget(i);
             if (shadow_target)
             {
-                gGL.getTexUnit(0)->bind(shadow_target, TRUE);
+                gGL.getTexUnit(0)->bind(shadow_target, true);
                 gGL.getTexUnit(0)->setTextureFilteringOption(LLTexUnit::TFO_ANISOTROPIC);
                 gGL.getTexUnit(0)->setTextureAddressMode(LLTexUnit::TAM_CLAMP);
 
@@ -994,8 +989,8 @@ void LLPipeline::refreshCachedSettings()
             && LLFeatureManager::getInstance()->isFeatureAvailable("UseOcclusion")
             && gSavedSettings.getBOOL("UseOcclusion")) ? 2 : 0;
 
-    WindLightUseAtmosShaders = TRUE; // DEPRECATED -- gSavedSettings.getBOOL("WindLightUseAtmosShaders");
-    RenderDeferred = TRUE; // DEPRECATED -- gSavedSettings.getBOOL("RenderDeferred");
+    WindLightUseAtmosShaders = true; // DEPRECATED -- gSavedSettings.getBOOL("WindLightUseAtmosShaders");
+    RenderDeferred = true; // DEPRECATED -- gSavedSettings.getBOOL("RenderDeferred");
     RenderDeferredSunWash = gSavedSettings.getF32("RenderDeferredSunWash");
     RenderFSAASamples = LLFeatureManager::getInstance()->isFeatureAvailable("RenderFSAASamples") ? gSavedSettings.getU32("RenderFSAASamples") : 0;
     RenderResolutionDivisor = gSavedSettings.getU32("RenderResolutionDivisor");
@@ -1071,7 +1066,7 @@ void LLPipeline::refreshCachedSettings()
     RenderScreenSpaceReflectionAdaptiveStepMultiplier = gSavedSettings.getF32("RenderScreenSpaceReflectionAdaptiveStepMultiplier");
     RenderScreenSpaceReflectionGlossySamples = gSavedSettings.getS32("RenderScreenSpaceReflectionGlossySamples");
     RenderBufferVisualization = gSavedSettings.getS32("RenderBufferVisualization");
-    if (gSavedSettings.getBOOL("RenderMirrors") != (BOOL)RenderMirrors)
+    if (gSavedSettings.getBOOL("RenderMirrors") != RenderMirrors)
     {
         RenderMirrors = gSavedSettings.getBOOL("RenderMirrors");
         LLViewerShaderMgr::instance()->clearShaderCache();
@@ -1641,7 +1636,7 @@ void LLPipeline::allocDrawable(LLViewerObject *vobj)
     {
         drawable->setState(LLDrawable::FORCE_INVISIBLE);
     }
-    drawable->updateXform(TRUE);
+    drawable->updateXform(true);
 }
 
 
@@ -1792,7 +1787,7 @@ void LLPipeline::createObject(LLViewerObject* vobj)
     if (drawablep->getVOVolume() && RenderAnimateRes)
     {
         // fun animated res
-        drawablep->updateXform(TRUE);
+        drawablep->updateXform(true);
         drawablep->clearState(LLDrawable::MOVE_UNDAMPED);
         drawablep->setScale(LLVector3(0,0,0));
         drawablep->makeActive();
@@ -1886,6 +1881,11 @@ void LLPipeline::updateMovedList(LLDrawable::drawable_vector_t& moved_list)
     {
         LLDrawable::drawable_vector_t::iterator curiter = iter++;
         LLDrawable *drawablep = *curiter;
+        if (!drawablep)
+        {
+            iter = moved_list.erase(curiter);
+            continue;
+        }
         bool done = true;
         if (!drawablep->isDead() && (!drawablep->isState(LLDrawable::EARLY_MOVE)))
         {
@@ -2436,6 +2436,7 @@ void LLPipeline::doOcclusion(LLCamera& camera)
         mCubeVB->setBuffer();
 
         mReflectionMapManager.doOcclusion();
+        mHeroProbeManager.doOcclusion();
         gOcclusionCubeProgram.unbind();
 
         gGL.setColorMask(true, true);
@@ -2525,7 +2526,7 @@ void LLPipeline::updateGL()
         {
             LLGLUpdate* glu = LLGLUpdate::sGLQ.front();
             glu->updateGL();
-            glu->mInQ = FALSE;
+            glu->mInQ = false;
             LLGLUpdate::sGLQ.pop_front();
         }
     }
@@ -2842,7 +2843,7 @@ void LLPipeline::markGLRebuild(LLGLUpdate* glu)
     if (glu && !glu->mInQ)
     {
         LLGLUpdate::sGLQ.push_back(glu);
-        glu->mInQ = TRUE;
+        glu->mInQ = true;
     }
 }
 
@@ -2961,7 +2962,7 @@ void LLPipeline::stateSort(LLCamera& camera, LLCullResult &result)
     if (LLViewerCamera::sCurCameraID == LLViewerCamera::CAMERA_WORLD && !gCubeSnapshot)
     {
         LLSpatialGroup* last_group = NULL;
-        BOOL fov_changed = LLViewerCamera::getInstance()->isDefaultFOVChanged();
+        bool fov_changed = LLViewerCamera::getInstance()->isDefaultFOVChanged();
         for (LLCullResult::bridge_iterator i = sCull->beginVisibleBridge(); i != sCull->endVisibleBridge(); ++i)
         {
             LLCullResult::bridge_iterator cur_iter = i;
@@ -3050,7 +3051,7 @@ void LLPipeline::stateSort(LLSpatialGroup* group, LLCamera& camera)
     }
 }
 
-void LLPipeline::stateSort(LLSpatialBridge* bridge, LLCamera& camera, BOOL fov_changed)
+void LLPipeline::stateSort(LLSpatialBridge* bridge, LLCamera& camera, bool fov_changed)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_PIPELINE;
     if (bridge->getSpatialGroup()->changeLOD() || fov_changed)
@@ -3108,7 +3109,7 @@ void LLPipeline::stateSort(LLDrawable* drawablep, LLCamera& camera)
     {
         if (!drawablep->isState(LLDrawable::INVISIBLE|LLDrawable::FORCE_INVISIBLE))
         {
-            drawablep->setVisible(camera, NULL, FALSE);
+            drawablep->setVisible(camera, NULL, false);
         }
     }
 
@@ -3603,7 +3604,7 @@ void LLPipeline::postSort(LLCamera &camera)
         }
     }
 
-    // LLSpatialGroup::sNoDelete = FALSE;
+    // LLSpatialGroup::sNoDelete = false;
     LL_PUSH_CALLSTACKS();
 }
 
@@ -3626,7 +3627,7 @@ void render_hud_elements()
 
     if (!LLPipeline::sReflectionRender && gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI))
     {
-        gViewerWindow->renderSelections(FALSE, FALSE, FALSE); // For HUD version in render_ui_3d()
+        gViewerWindow->renderSelections(false, false, false); // For HUD version in render_ui_3d()
 
         // Draw the tracking overlays
         LLTracker::render3D();
@@ -3678,10 +3679,8 @@ void LLPipeline::renderHighlights()
         // Make sure the selection image gets downloaded and decoded
         mFaceSelectImagep->addTextureStats((F32)MAX_IMAGE_AREA);
 
-        U32 count = mSelectedFaces.size();
-        for (U32 i = 0; i < count; i++)
+        for (auto facep : mSelectedFaces)
         {
-            LLFace *facep = mSelectedFaces[i];
             if (!facep || facep->getDrawable()->isDead())
             {
                 LL_ERRS() << "Bad face on selection" << LL_ENDL;
@@ -3697,10 +3696,8 @@ void LLPipeline::renderHighlights()
         // Paint 'em red!
         color.setVec(1.f, 0.f, 0.f, 0.5f);
 
-        int count = mHighlightFaces.size();
-        for (S32 i = 0; i < count; i++)
+        for (auto facep : mHighlightFaces)
         {
-            LLFace* facep = mHighlightFaces[i];
             facep->renderSelected(LLViewerTexture::sNullImagep, color);
         }
     }
@@ -3726,10 +3723,8 @@ void LLPipeline::renderHighlights()
 
         mFaceSelectImagep->addTextureStats((F32)MAX_IMAGE_AREA);
 
-        U32 count = mSelectedFaces.size();
-        for (U32 i = 0; i < count; i++)
+        for (auto facep : mSelectedFaces)
         {
-            LLFace *facep = mSelectedFaces[i];
             if (!facep || facep->getDrawable()->isDead())
             {
                 LL_ERRS() << "Bad face on selection" << LL_ENDL;
@@ -3756,10 +3751,8 @@ void LLPipeline::renderHighlights()
 
         mFaceSelectImagep->addTextureStats((F32)MAX_IMAGE_AREA);
 
-        U32 count = mSelectedFaces.size();
-        for (U32 i = 0; i < count; i++)
+        for (auto facep : mSelectedFaces)
         {
-            LLFace *facep = mSelectedFaces[i];
             if (!facep || facep->getDrawable()->isDead())
             {
                 LL_ERRS() << "Bad face on selection" << LL_ENDL;
@@ -4662,7 +4655,7 @@ void LLPipeline::renderDebug()
         LLVertexBuffer::unbind();
 
         LLGLEnable blend(GL_BLEND);
-        LLGLDepthTest depth(TRUE, FALSE);
+        LLGLDepthTest depth(true, false);
         LLGLDisable cull(GL_CULL_FACE);
 
         gGL.color4f(1,1,1,1);
@@ -4842,7 +4835,7 @@ void LLPipeline::rebuildPools()
 
     assertInitialized();
 
-    S32 max_count = mPools.size();
+    auto max_count = mPools.size();
     pool_set_t::iterator iter1 = mPools.upper_bound(mLastRebuildPool);
     while(max_count > 0 && mPools.size() > 0) // && num_rebuilds < MAX_REBUILDS)
     {
@@ -5801,7 +5794,7 @@ void LLPipeline::enableLightsDynamic()
 void LLPipeline::enableLightsAvatar()
 {
     U32 mask = 0xff; // All lights
-    setupAvatarLights(FALSE);
+    setupAvatarLights(false);
     enableLights(mask);
 }
 
@@ -5865,7 +5858,7 @@ void LLPipeline::enableLightsPreview()
 void LLPipeline::enableLightsAvatarEdit(const LLColor4& color)
 {
     U32 mask = 0x2002; // Avatar backlight only, set ambient
-    setupAvatarLights(TRUE);
+    setupAvatarLights(true);
     enableLights(mask);
 
     gGL.setAmbientLightColor(color);
@@ -6321,7 +6314,7 @@ LLVOPartGroup* LLPipeline::lineSegmentIntersectParticle(const LLVector4a& start,
         LLSpatialPartition* part = region->getSpatialPartition(LLViewerRegion::PARTITION_PARTICLE);
         if (part && hasRenderType(part->mDrawableType))
         {
-            LLDrawable* hit = part->lineSegmentIntersect(start, local_end, TRUE, FALSE, TRUE, FALSE, face_hit, &position, NULL, NULL, NULL);
+            LLDrawable* hit = part->lineSegmentIntersect(start, local_end, true, false, true, false, face_hit, &position, NULL, NULL, NULL);
             if (hit)
             {
                 drawable = hit;
@@ -6550,7 +6543,7 @@ LLViewerObject* LLPipeline::lineSegmentIntersectInHUD(const LLVector4a& start, c
         LLSpatialPartition* part = region->getSpatialPartition(LLViewerRegion::PARTITION_HUD);
         if (part)
         {
-            LLDrawable* hit = part->lineSegmentIntersect(start, end, pick_transparent, FALSE, TRUE, FALSE, face_hit, intersection, tex_coord, normal, tangent);
+            LLDrawable* hit = part->lineSegmentIntersect(start, end, pick_transparent, false, true, false, face_hit, intersection, tex_coord, normal, tangent);
             if (hit)
             {
                 drawable = hit;
@@ -6863,7 +6856,7 @@ void LLPipeline::generateLuminance(LLRenderTarget* src, LLRenderTarget* dst)
             mGlow[1].bindTexture(0, channel);
         }
 
-        channel = gLuminanceProgram.enableTexture(LLShaderMgr::DEFERRED_NORMAL);
+        channel = gLuminanceProgram.enableTexture(LLShaderMgr::NORMAL_MAP);
         if (channel > -1)
         {
             // bind the normal map to get the environment mask
@@ -7328,7 +7321,7 @@ void LLPipeline::renderDoF(LLRenderTarget* src, LLRenderTarget* dst)
                     LLVector4a result;
                     result.clear();
 
-                    gViewerWindow->cursorIntersect(-1, -1, 512.f, NULL, -1, FALSE, FALSE, TRUE, TRUE, nullptr, nullptr, nullptr, &result);
+                    gViewerWindow->cursorIntersect(-1, -1, 512.f, nullptr, -1, false, false, true, true, nullptr, nullptr, nullptr, &result);
 
                     focus_point.set(result.getF32ptr());
                 }
@@ -7613,7 +7606,7 @@ void LLPipeline::bindShadowMaps(LLGLSLShader& shader)
             S32 channel = shader.enableTexture(LLShaderMgr::DEFERRED_SHADOW0 + i, LLTexUnit::TT_TEXTURE);
             if (channel > -1)
             {
-                gGL.getTexUnit(channel)->bind(getSunShadowTarget(i), TRUE);
+                gGL.getTexUnit(channel)->bind(getSunShadowTarget(i), true);
             }
         }
     }
@@ -7626,7 +7619,7 @@ void LLPipeline::bindShadowMaps(LLGLSLShader& shader)
             LLRenderTarget* shadow_target = getSpotShadowTarget(i - 4);
             if (shadow_target)
             {
-                gGL.getTexUnit(channel)->bind(shadow_target, TRUE);
+                gGL.getTexUnit(channel)->bind(shadow_target, true);
             }
         }
     }
@@ -7670,7 +7663,7 @@ void LLPipeline::bindDeferredShader(LLGLSLShader& shader, LLRenderTarget* light_
         gGL.getTexUnit(channel)->setTextureAddressMode(LLTexUnit::TAM_CLAMP);
     }
 
-    channel = shader.enableTexture(LLShaderMgr::DEFERRED_NORMAL, deferred_target->getUsage());
+    channel = shader.enableTexture(LLShaderMgr::NORMAL_MAP, deferred_target->getUsage());
     if (channel > -1)
     {
         deferred_target->bindTexture(2, channel, LLTexUnit::TFO_POINT); // frag_data[2]
@@ -7689,11 +7682,11 @@ void LLPipeline::bindDeferredShader(LLGLSLShader& shader, LLRenderTarget* light_
     {
         if (depth_target)
         {
-            gGL.getTexUnit(channel)->bind(depth_target, TRUE);
+            gGL.getTexUnit(channel)->bind(depth_target, true);
         }
         else
         {
-            gGL.getTexUnit(channel)->bind(deferred_target, TRUE);
+            gGL.getTexUnit(channel)->bind(deferred_target, true);
         }
         stop_glerror();
     }
@@ -7714,7 +7707,7 @@ void LLPipeline::bindDeferredShader(LLGLSLShader& shader, LLRenderTarget* light_
 
     if (sReflectionRender && !shader.getUniformLocation(LLShaderMgr::MODELVIEW_MATRIX))
     {
-        shader.uniformMatrix4fv(LLShaderMgr::MODELVIEW_MATRIX, 1, FALSE, mReflectionModelView.m);
+        shader.uniformMatrix4fv(LLShaderMgr::MODELVIEW_MATRIX, 1, false, mReflectionModelView.m);
     }
 
     channel = shader.enableTexture(LLShaderMgr::DEFERRED_NOISE);
@@ -7759,7 +7752,7 @@ void LLPipeline::bindDeferredShader(LLGLSLShader& shader, LLRenderTarget* light_
         mat[i+80] = mSunShadowMatrix[5].m[i];
     }
 
-    shader.uniformMatrix4fv(LLShaderMgr::DEFERRED_SHADOW_MATRIX, 6, FALSE, mat);
+    shader.uniformMatrix4fv(LLShaderMgr::DEFERRED_SHADOW_MATRIX, 6, false, mat);
 
     stop_glerror();
 
@@ -7781,7 +7774,7 @@ void LLPipeline::bindDeferredShader(LLGLSLShader& shader, LLRenderTarget* light_
                           m[4], m[5], m[6],
                           m[8], m[9], m[10] };
 
-            shader.uniformMatrix3fv(LLShaderMgr::DEFERRED_ENV_MAT, 1, TRUE, mat);
+            shader.uniformMatrix3fv(LLShaderMgr::DEFERRED_ENV_MAT, 1, true, mat);
         }
     }
 
@@ -7870,7 +7863,7 @@ void LLPipeline::bindDeferredShader(LLGLSLShader& shader, LLRenderTarget* light_
     if (shader.getUniformLocation(LLShaderMgr::DEFERRED_NORM_MATRIX) >= 0)
     {
         glh::matrix4f norm_mat = get_current_modelview().inverse().transpose();
-        shader.uniformMatrix4fv(LLShaderMgr::DEFERRED_NORM_MATRIX, 1, FALSE, norm_mat.m);
+        shader.uniformMatrix4fv(LLShaderMgr::DEFERRED_NORM_MATRIX, 1, false, norm_mat.m);
     }
 
     // auto adjust legacy sun color if needed
@@ -8615,7 +8608,7 @@ void LLPipeline::setupSpotLight(LLGLSLShader& shader, LLDrawable* drawablep)
     F32 proj_range = far_clip - near_clip;
     glh::matrix4f light_proj = gl_perspective(fovy, aspect, near_clip, far_clip);
     screen_to_light = trans * light_proj * screen_to_light;
-    shader.uniformMatrix4fv(LLShaderMgr::PROJECTOR_MATRIX, 1, FALSE, screen_to_light.m);
+    shader.uniformMatrix4fv(LLShaderMgr::PROJECTOR_MATRIX, 1, false, screen_to_light.m);
     shader.uniform1f(LLShaderMgr::PROJECTOR_NEAR, near_clip);
     shader.uniform3fv(LLShaderMgr::PROJECTOR_P, 1, p1.v);
     shader.uniform3fv(LLShaderMgr::PROJECTOR_N, 1, n.v);
@@ -8705,7 +8698,7 @@ void LLPipeline::unbindDeferredShader(LLGLSLShader &shader)
     LLRenderTarget* deferred_light_target = &mRT->deferredLight;
 
     stop_glerror();
-    shader.disableTexture(LLShaderMgr::DEFERRED_NORMAL, deferred_target->getUsage());
+    shader.disableTexture(LLShaderMgr::NORMAL_MAP, deferred_target->getUsage());
     shader.disableTexture(LLShaderMgr::DEFERRED_DIFFUSE, deferred_target->getUsage());
     shader.disableTexture(LLShaderMgr::DEFERRED_SPECULAR, deferred_target->getUsage());
     shader.disableTexture(LLShaderMgr::DEFERRED_EMISSIVE, deferred_target->getUsage());
@@ -8763,7 +8756,7 @@ void LLPipeline::setEnvMat(LLGLSLShader& shader)
                     m[4], m[5], m[6],
                     m[8], m[9], m[10] };
 
-    shader.uniformMatrix3fv(LLShaderMgr::DEFERRED_ENV_MAT, 1, TRUE, mat);
+    shader.uniformMatrix3fv(LLShaderMgr::DEFERRED_ENV_MAT, 1, true, mat);
 }
 
 void LLPipeline::bindReflectionProbes(LLGLSLShader& shader)
@@ -9630,7 +9623,7 @@ void LLPipeline::generateSunShadow(LLCamera& camera)
             shadow_cam = camera;
             shadow_cam.setFar(16.f);
 
-            LLViewerCamera::updateFrustumPlanes(shadow_cam, FALSE, FALSE, TRUE);
+            LLViewerCamera::updateFrustumPlanes(shadow_cam, false, false, true);
 
             LLVector3* frust = shadow_cam.mAgentFrustum;
 
@@ -9937,7 +9930,7 @@ void LLPipeline::generateSunShadow(LLCamera& camera)
             set_current_modelview(view[j]);
             set_current_projection(proj[j]);
 
-            LLViewerCamera::updateFrustumPlanes(shadow_cam, FALSE, FALSE, TRUE);
+            LLViewerCamera::updateFrustumPlanes(shadow_cam, false, false, true);
 
             //shadow_cam.ignoreAgentFrustumPlane(LLCamera::AGENT_PLANE_NEAR);
             shadow_cam.getAgentPlane(LLCamera::AGENT_PLANE_NEAR).set(shadow_near_clip);
@@ -10111,7 +10104,7 @@ void LLPipeline::generateSunShadow(LLCamera& camera)
                 shadow_cam.setFar(far_clip);
                 shadow_cam.setOrigin(origin);
 
-                LLViewerCamera::updateFrustumPlanes(shadow_cam, FALSE, FALSE, TRUE);
+                LLViewerCamera::updateFrustumPlanes(shadow_cam, false, false, true);
 
                 //
 
@@ -10279,7 +10272,7 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar, bool preview_avatar, bool
     result.clear();
     grabReferences(result);
 
-    if (!avatar || !avatar->mDrawable)
+    if (!avatar || avatar->isDead() || !avatar->mDrawable)
     {
         LL_WARNS_ONCE("AvatarRenderPipeline") << "Avatar is " << (avatar ? "not drawable" : "null") << LL_ENDL;
         return;
@@ -10626,7 +10619,7 @@ void LLPipeline::generateImpostor(LLVOAvatar* avatar, bool preview_avatar, bool
 
     if (!preview_avatar && !for_profile)
     {
-        avatar->mNeedsImpostorUpdate = FALSE;
+        avatar->mNeedsImpostorUpdate = false;
         avatar->cacheImpostorValues();
         avatar->mLastImpostorUpdateFrameTime = gFrameTimeSeconds;
     }
diff --git a/indra/newview/pipeline.h b/indra/newview/pipeline.h
index 62eba72e81..1d2033b4f0 100644
--- a/indra/newview/pipeline.h
+++ b/indra/newview/pipeline.h
@@ -277,7 +277,7 @@ public:
 
     void stateSort(LLCamera& camera, LLCullResult& result);
     void stateSort(LLSpatialGroup* group, LLCamera& camera);
-    void stateSort(LLSpatialBridge* bridge, LLCamera& camera, BOOL fov_changed = FALSE);
+    void stateSort(LLSpatialBridge* bridge, LLCamera& camera, bool fov_changed = false);
     void stateSort(LLDrawable* drawablep, LLCamera& camera);
     void postSort(LLCamera& camera);
 
@@ -351,7 +351,7 @@ public:
     void findReferences(LLDrawable *drawablep); // Find the lists which have references to this object
     bool verify();                      // Verify that all data in the pipeline is "correct"
 
-    S32  getLightCount() const { return mLights.size(); }
+    S32  getLightCount() const { return static_cast<S32>(mLights.size()); }
 
     void calcNearbyLights(LLCamera& camera);
     void setupHWLights();
diff --git a/indra/newview/skins/default/textures/icons/AddItem_Disabled.png b/indra/newview/skins/default/textures/icons/AddItem_Disabled.png
index cf88c89ae5..d21b72b973 100644
--- a/indra/newview/skins/default/textures/icons/AddItem_Disabled.png
+++ b/indra/newview/skins/default/textures/icons/AddItem_Disabled.png
diff --git a/indra/newview/skins/default/textures/icons/AddItem_Off.png b/indra/newview/skins/default/textures/icons/AddItem_Off.png
index 52d4f9bc80..64108d133a 100644
--- a/indra/newview/skins/default/textures/icons/AddItem_Off.png
+++ b/indra/newview/skins/default/textures/icons/AddItem_Off.png
diff --git a/indra/newview/skins/default/textures/icons/AddItem_Press.png b/indra/newview/skins/default/textures/icons/AddItem_Press.png
index acc898e5f4..3168f51757 100644
--- a/indra/newview/skins/default/textures/icons/AddItem_Press.png
+++ b/indra/newview/skins/default/textures/icons/AddItem_Press.png
diff --git a/indra/newview/skins/default/textures/icons/AudioMute_Off.png b/indra/newview/skins/default/textures/icons/AudioMute_Off.png
index 938aaef491..dd89920fae 100644
--- a/indra/newview/skins/default/textures/icons/AudioMute_Off.png
+++ b/indra/newview/skins/default/textures/icons/AudioMute_Off.png
diff --git a/indra/newview/skins/default/textures/icons/AudioMute_Over.png b/indra/newview/skins/default/textures/icons/AudioMute_Over.png
index 7bd1b12aae..a4fbec4144 100644
--- a/indra/newview/skins/default/textures/icons/AudioMute_Over.png
+++ b/indra/newview/skins/default/textures/icons/AudioMute_Over.png
diff --git a/indra/newview/skins/default/textures/icons/Audio_Off.png b/indra/newview/skins/default/textures/icons/Audio_Off.png
index ef746aab92..4f6f5512c8 100644
--- a/indra/newview/skins/default/textures/icons/Audio_Off.png
+++ b/indra/newview/skins/default/textures/icons/Audio_Off.png
diff --git a/indra/newview/skins/default/textures/icons/Audio_Press.png b/indra/newview/skins/default/textures/icons/Audio_Press.png
index 25a669224a..0268a0f9fb 100644
--- a/indra/newview/skins/default/textures/icons/Audio_Press.png
+++ b/indra/newview/skins/default/textures/icons/Audio_Press.png
diff --git a/indra/newview/skins/default/textures/icons/BackArrow_Off.png b/indra/newview/skins/default/textures/icons/BackArrow_Off.png
index ff32192856..3775690531 100644
--- a/indra/newview/skins/default/textures/icons/BackArrow_Off.png
+++ b/indra/newview/skins/default/textures/icons/BackArrow_Off.png
diff --git a/indra/newview/skins/default/textures/icons/ClipboardMenu_Disabled.png b/indra/newview/skins/default/textures/icons/ClipboardMenu_Disabled.png
index 9a81c5f94b..c219ac4446 100644
--- a/indra/newview/skins/default/textures/icons/ClipboardMenu_Disabled.png
+++ b/indra/newview/skins/default/textures/icons/ClipboardMenu_Disabled.png
diff --git a/indra/newview/skins/default/textures/icons/ClipboardMenu_Off.png b/indra/newview/skins/default/textures/icons/ClipboardMenu_Off.png
index 88012cf8d1..586f577181 100644
--- a/indra/newview/skins/default/textures/icons/ClipboardMenu_Off.png
+++ b/indra/newview/skins/default/textures/icons/ClipboardMenu_Off.png
diff --git a/indra/newview/skins/default/textures/icons/ClipboardMenu_Press.png b/indra/newview/skins/default/textures/icons/ClipboardMenu_Press.png
index ab02e7d42d..697bee3bbd 100644
--- a/indra/newview/skins/default/textures/icons/ClipboardMenu_Press.png
+++ b/indra/newview/skins/default/textures/icons/ClipboardMenu_Press.png
diff --git a/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Disabled.png b/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Disabled.png
index 63b4bd2127..12cc1857d4 100644
--- a/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Disabled.png
+++ b/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Disabled.png
diff --git a/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Off.png b/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Off.png
index 4200182b0c..7b40e33e11 100644
--- a/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Off.png
+++ b/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Off.png
diff --git a/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Press.png b/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Press.png
index e12887f489..e030c44f01 100644
--- a/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Press.png
+++ b/indra/newview/skins/default/textures/icons/ClipboardSmallMenu_Press.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_log_inbox.png b/indra/newview/skins/default/textures/icons/Conv_log_inbox.png
index bb6ca28147..f4bbdc059d 100644
--- a/indra/newview/skins/default/textures/icons/Conv_log_inbox.png
+++ b/indra/newview/skins/default/textures/icons/Conv_log_inbox.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_toolbar_add_person.png b/indra/newview/skins/default/textures/icons/Conv_toolbar_add_person.png
index 0631f16f3b..acb3904e32 100644
--- a/indra/newview/skins/default/textures/icons/Conv_toolbar_add_person.png
+++ b/indra/newview/skins/default/textures/icons/Conv_toolbar_add_person.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_toolbar_arrow_ne.png b/indra/newview/skins/default/textures/icons/Conv_toolbar_arrow_ne.png
index 578482f5ed..70dec7cad1 100644
--- a/indra/newview/skins/default/textures/icons/Conv_toolbar_arrow_ne.png
+++ b/indra/newview/skins/default/textures/icons/Conv_toolbar_arrow_ne.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_toolbar_arrow_sw.png b/indra/newview/skins/default/textures/icons/Conv_toolbar_arrow_sw.png
index 7676131790..13d424832b 100644
--- a/indra/newview/skins/default/textures/icons/Conv_toolbar_arrow_sw.png
+++ b/indra/newview/skins/default/textures/icons/Conv_toolbar_arrow_sw.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_toolbar_call_log.png b/indra/newview/skins/default/textures/icons/Conv_toolbar_call_log.png
index 2880eb766a..1866dd965c 100644
--- a/indra/newview/skins/default/textures/icons/Conv_toolbar_call_log.png
+++ b/indra/newview/skins/default/textures/icons/Conv_toolbar_call_log.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_toolbar_close.png b/indra/newview/skins/default/textures/icons/Conv_toolbar_close.png
index d009c8f446..f4f2e2fd37 100644
--- a/indra/newview/skins/default/textures/icons/Conv_toolbar_close.png
+++ b/indra/newview/skins/default/textures/icons/Conv_toolbar_close.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_toolbar_collapse.png b/indra/newview/skins/default/textures/icons/Conv_toolbar_collapse.png
index 8d82960e28..3c427a3cc5 100644
--- a/indra/newview/skins/default/textures/icons/Conv_toolbar_collapse.png
+++ b/indra/newview/skins/default/textures/icons/Conv_toolbar_collapse.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_toolbar_expand.png b/indra/newview/skins/default/textures/icons/Conv_toolbar_expand.png
index f718d3fc60..6e8031b42c 100644
--- a/indra/newview/skins/default/textures/icons/Conv_toolbar_expand.png
+++ b/indra/newview/skins/default/textures/icons/Conv_toolbar_expand.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_toolbar_hang_up.png b/indra/newview/skins/default/textures/icons/Conv_toolbar_hang_up.png
index 315e2c581a..887a3b8335 100644
--- a/indra/newview/skins/default/textures/icons/Conv_toolbar_hang_up.png
+++ b/indra/newview/skins/default/textures/icons/Conv_toolbar_hang_up.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_toolbar_open_call.png b/indra/newview/skins/default/textures/icons/Conv_toolbar_open_call.png
index 732ab02a20..fc0da5a810 100644
--- a/indra/newview/skins/default/textures/icons/Conv_toolbar_open_call.png
+++ b/indra/newview/skins/default/textures/icons/Conv_toolbar_open_call.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_toolbar_plus.png b/indra/newview/skins/default/textures/icons/Conv_toolbar_plus.png
index 25a32cb2ba..6d45dbbff6 100644
--- a/indra/newview/skins/default/textures/icons/Conv_toolbar_plus.png
+++ b/indra/newview/skins/default/textures/icons/Conv_toolbar_plus.png
diff --git a/indra/newview/skins/default/textures/icons/Conv_toolbar_sort.png b/indra/newview/skins/default/textures/icons/Conv_toolbar_sort.png
index 08debeb91f..e3e5f49741 100644
--- a/indra/newview/skins/default/textures/icons/Conv_toolbar_sort.png
+++ b/indra/newview/skins/default/textures/icons/Conv_toolbar_sort.png
diff --git a/indra/newview/skins/default/textures/icons/Copy.png b/indra/newview/skins/default/textures/icons/Copy.png
index d45134e9dd..8448e70385 100644
--- a/indra/newview/skins/default/textures/icons/Copy.png
+++ b/indra/newview/skins/default/textures/icons/Copy.png
diff --git a/indra/newview/skins/default/textures/icons/CopyBright.png b/indra/newview/skins/default/textures/icons/CopyBright.png
index 8d21c47295..ac65d68e0b 100644
--- a/indra/newview/skins/default/textures/icons/CopyBright.png
+++ b/indra/newview/skins/default/textures/icons/CopyBright.png
diff --git a/indra/newview/skins/default/textures/icons/Default_Outfit_Photo.png b/indra/newview/skins/default/textures/icons/Default_Outfit_Photo.png
index bacddcbb68..1113b4effe 100644
--- a/indra/newview/skins/default/textures/icons/Default_Outfit_Photo.png
+++ b/indra/newview/skins/default/textures/icons/Default_Outfit_Photo.png
diff --git a/indra/newview/skins/default/textures/icons/DownArrow_Off.png b/indra/newview/skins/default/textures/icons/DownArrow_Off.png
index 60f62eed4a..2e1e2964a0 100644
--- a/indra/newview/skins/default/textures/icons/DownArrow_Off.png
+++ b/indra/newview/skins/default/textures/icons/DownArrow_Off.png
diff --git a/indra/newview/skins/default/textures/icons/Edit_Wrench.png b/indra/newview/skins/default/textures/icons/Edit_Wrench.png
index 42f8466969..2b9ba9dc10 100644
--- a/indra/newview/skins/default/textures/icons/Edit_Wrench.png
+++ b/indra/newview/skins/default/textures/icons/Edit_Wrench.png
diff --git a/indra/newview/skins/default/textures/icons/ExternalBrowser_Off.png b/indra/newview/skins/default/textures/icons/ExternalBrowser_Off.png
index 69646ce473..dc4532b5a1 100644
--- a/indra/newview/skins/default/textures/icons/ExternalBrowser_Off.png
+++ b/indra/newview/skins/default/textures/icons/ExternalBrowser_Off.png
diff --git a/indra/newview/skins/default/textures/icons/Facebook.png b/indra/newview/skins/default/textures/icons/Facebook.png
index 8287d56f88..9e51e3ac7f 100644
--- a/indra/newview/skins/default/textures/icons/Facebook.png
+++ b/indra/newview/skins/default/textures/icons/Facebook.png
diff --git a/indra/newview/skins/default/textures/icons/Female.png b/indra/newview/skins/default/textures/icons/Female.png
index 67b5653a94..c9fef87b6e 100644
--- a/indra/newview/skins/default/textures/icons/Female.png
+++ b/indra/newview/skins/default/textures/icons/Female.png
diff --git a/indra/newview/skins/default/textures/icons/ForSale_Badge.png b/indra/newview/skins/default/textures/icons/ForSale_Badge.png
index 5bee570cee..3b3a41c7c1 100644
--- a/indra/newview/skins/default/textures/icons/ForSale_Badge.png
+++ b/indra/newview/skins/default/textures/icons/ForSale_Badge.png
diff --git a/indra/newview/skins/default/textures/icons/ForwardArrow_Off.png b/indra/newview/skins/default/textures/icons/ForwardArrow_Off.png
index e9b72b0401..c33320cf6e 100644
--- a/indra/newview/skins/default/textures/icons/ForwardArrow_Off.png
+++ b/indra/newview/skins/default/textures/icons/ForwardArrow_Off.png
diff --git a/indra/newview/skins/default/textures/icons/ForwardArrow_Press.png b/indra/newview/skins/default/textures/icons/ForwardArrow_Press.png
index c7b2c769ae..86eb39c43a 100644
--- a/indra/newview/skins/default/textures/icons/ForwardArrow_Press.png
+++ b/indra/newview/skins/default/textures/icons/ForwardArrow_Press.png
diff --git a/indra/newview/skins/default/textures/icons/Generic_Group.png b/indra/newview/skins/default/textures/icons/Generic_Group.png
index 9d76f75d0f..e96b7fc992 100644
--- a/indra/newview/skins/default/textures/icons/Generic_Group.png
+++ b/indra/newview/skins/default/textures/icons/Generic_Group.png
diff --git a/indra/newview/skins/default/textures/icons/Generic_Group_Large.png b/indra/newview/skins/default/textures/icons/Generic_Group_Large.png
index 46ee6dfe2c..9396819bfb 100644
--- a/indra/newview/skins/default/textures/icons/Generic_Group_Large.png
+++ b/indra/newview/skins/default/textures/icons/Generic_Group_Large.png
diff --git a/indra/newview/skins/default/textures/icons/Generic_Object_Small.png b/indra/newview/skins/default/textures/icons/Generic_Object_Small.png
index 223874e631..142390e3f3 100644
--- a/indra/newview/skins/default/textures/icons/Generic_Object_Small.png
+++ b/indra/newview/skins/default/textures/icons/Generic_Object_Small.png
diff --git a/indra/newview/skins/default/textures/icons/Generic_Person.png b/indra/newview/skins/default/textures/icons/Generic_Person.png
index e1411354af..162735d979 100644
--- a/indra/newview/skins/default/textures/icons/Generic_Person.png
+++ b/indra/newview/skins/default/textures/icons/Generic_Person.png
diff --git a/indra/newview/skins/default/textures/icons/Generic_Person_Large.png b/indra/newview/skins/default/textures/icons/Generic_Person_Large.png
index 532288b430..5be82418c1 100644
--- a/indra/newview/skins/default/textures/icons/Generic_Person_Large.png
+++ b/indra/newview/skins/default/textures/icons/Generic_Person_Large.png
diff --git a/indra/newview/skins/default/textures/icons/Hierarchy_View_Disabled.png b/indra/newview/skins/default/textures/icons/Hierarchy_View_Disabled.png
index fb370f98d5..6d8ea5fd93 100644
--- a/indra/newview/skins/default/textures/icons/Hierarchy_View_Disabled.png
+++ b/indra/newview/skins/default/textures/icons/Hierarchy_View_Disabled.png
diff --git a/indra/newview/skins/default/textures/icons/Hierarchy_View_On.png b/indra/newview/skins/default/textures/icons/Hierarchy_View_On.png
index ae8c8b4c1a..24f5210286 100644
--- a/indra/newview/skins/default/textures/icons/Hierarchy_View_On.png
+++ b/indra/newview/skins/default/textures/icons/Hierarchy_View_On.png
diff --git a/indra/newview/skins/default/textures/icons/Icon_For_Sale.png b/indra/newview/skins/default/textures/icons/Icon_For_Sale.png
index 3dec6b989c..57a376f1bf 100644
--- a/indra/newview/skins/default/textures/icons/Icon_For_Sale.png
+++ b/indra/newview/skins/default/textures/icons/Icon_For_Sale.png
diff --git a/indra/newview/skins/default/textures/icons/Icon_Notification_Condense.png b/indra/newview/skins/default/textures/icons/Icon_Notification_Condense.png
index 4d245eb57a..3a19e79f82 100644
--- a/indra/newview/skins/default/textures/icons/Icon_Notification_Condense.png
+++ b/indra/newview/skins/default/textures/icons/Icon_Notification_Condense.png
diff --git a/indra/newview/skins/default/textures/icons/Icon_Notification_Expand.png b/indra/newview/skins/default/textures/icons/Icon_Notification_Expand.png
index 186822da43..f5331feb02 100644
--- a/indra/newview/skins/default/textures/icons/Icon_Notification_Expand.png
+++ b/indra/newview/skins/default/textures/icons/Icon_Notification_Expand.png
diff --git a/indra/newview/skins/default/textures/icons/Info.png b/indra/newview/skins/default/textures/icons/Info.png
index e52560281b..e05a585f0b 100644
--- a/indra/newview/skins/default/textures/icons/Info.png
+++ b/indra/newview/skins/default/textures/icons/Info.png
diff --git a/indra/newview/skins/default/textures/icons/Info_Small.png b/indra/newview/skins/default/textures/icons/Info_Small.png
index 81078c32dc..c4ce13e132 100644
--- a/indra/newview/skins/default/textures/icons/Info_Small.png
+++ b/indra/newview/skins/default/textures/icons/Info_Small.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Alpha.png b/indra/newview/skins/default/textures/icons/Inv_Alpha.png
index b65dc1929d..fdad36e2d3 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Alpha.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Alpha.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Animation.png b/indra/newview/skins/default/textures/icons/Inv_Animation.png
index ab42c61a92..6715c736e7 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Animation.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Animation.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_BodyShape.png b/indra/newview/skins/default/textures/icons/Inv_BodyShape.png
index 97e874d70d..cb908a39fb 100644
--- a/indra/newview/skins/default/textures/icons/Inv_BodyShape.png
+++ b/indra/newview/skins/default/textures/icons/Inv_BodyShape.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_CallingCard.png b/indra/newview/skins/default/textures/icons/Inv_CallingCard.png
index 1de96475f7..ee87f8e595 100644
--- a/indra/newview/skins/default/textures/icons/Inv_CallingCard.png
+++ b/indra/newview/skins/default/textures/icons/Inv_CallingCard.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Clothing.png b/indra/newview/skins/default/textures/icons/Inv_Clothing.png
index e8d246c6fa..430dca6b5e 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Clothing.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Clothing.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Eye.png b/indra/newview/skins/default/textures/icons/Inv_Eye.png
index e619f56c2b..d715f135d3 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Eye.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Eye.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_FolderClosed.png b/indra/newview/skins/default/textures/icons/Inv_FolderClosed.png
index 342a973d00..ec99eaee9e 100644
--- a/indra/newview/skins/default/textures/icons/Inv_FolderClosed.png
+++ b/indra/newview/skins/default/textures/icons/Inv_FolderClosed.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_FolderOpen.png b/indra/newview/skins/default/textures/icons/Inv_FolderOpen.png
index 0507c2cbaf..615a6ec11b 100644
--- a/indra/newview/skins/default/textures/icons/Inv_FolderOpen.png
+++ b/indra/newview/skins/default/textures/icons/Inv_FolderOpen.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Gesture.png b/indra/newview/skins/default/textures/icons/Inv_Gesture.png
index 52695ec19b..9fee34915e 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Gesture.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Gesture.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Gloves.png b/indra/newview/skins/default/textures/icons/Inv_Gloves.png
index d6a2113aaf..aa151d5404 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Gloves.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Gloves.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Hair.png b/indra/newview/skins/default/textures/icons/Inv_Hair.png
index ae941b0dd5..62b3ae81c2 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Hair.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Hair.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Invalid.png b/indra/newview/skins/default/textures/icons/Inv_Invalid.png
index 328be104ee..6ab5ba5217 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Invalid.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Invalid.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Jacket.png b/indra/newview/skins/default/textures/icons/Inv_Jacket.png
index 3859666f7c..26514f1c0f 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Jacket.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Jacket.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Landmark.png b/indra/newview/skins/default/textures/icons/Inv_Landmark.png
index 76df984596..338323fcee 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Landmark.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Landmark.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Link.png b/indra/newview/skins/default/textures/icons/Inv_Link.png
index 26bf4086fb..28c5f3635a 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Link.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Link.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_LinkFolder.png b/indra/newview/skins/default/textures/icons/Inv_LinkFolder.png
index 73a708782c..7c43ed3a43 100644
--- a/indra/newview/skins/default/textures/icons/Inv_LinkFolder.png
+++ b/indra/newview/skins/default/textures/icons/Inv_LinkFolder.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_LinkItem.png b/indra/newview/skins/default/textures/icons/Inv_LinkItem.png
index 73a708782c..7c43ed3a43 100644
--- a/indra/newview/skins/default/textures/icons/Inv_LinkItem.png
+++ b/indra/newview/skins/default/textures/icons/Inv_LinkItem.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_LookFolderClosed.png b/indra/newview/skins/default/textures/icons/Inv_LookFolderClosed.png
index f2ae828efc..46f2038279 100644
--- a/indra/newview/skins/default/textures/icons/Inv_LookFolderClosed.png
+++ b/indra/newview/skins/default/textures/icons/Inv_LookFolderClosed.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_LookFolderOpen.png b/indra/newview/skins/default/textures/icons/Inv_LookFolderOpen.png
index d454d4cd48..06a1b05983 100644
--- a/indra/newview/skins/default/textures/icons/Inv_LookFolderOpen.png
+++ b/indra/newview/skins/default/textures/icons/Inv_LookFolderOpen.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_LostClosed.png b/indra/newview/skins/default/textures/icons/Inv_LostClosed.png
index 42b5c88fdd..fc9a2a2156 100644
--- a/indra/newview/skins/default/textures/icons/Inv_LostClosed.png
+++ b/indra/newview/skins/default/textures/icons/Inv_LostClosed.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_LostOpen.png b/indra/newview/skins/default/textures/icons/Inv_LostOpen.png
index a52168d6c7..b15dc3cfa3 100644
--- a/indra/newview/skins/default/textures/icons/Inv_LostOpen.png
+++ b/indra/newview/skins/default/textures/icons/Inv_LostOpen.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Material.png b/indra/newview/skins/default/textures/icons/Inv_Material.png
index f5918ceaed..5cbb4fc5c9 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Material.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Material.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Mesh.png b/indra/newview/skins/default/textures/icons/Inv_Mesh.png
index 77e52264c3..69217d1cdc 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Mesh.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Mesh.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Notecard.png b/indra/newview/skins/default/textures/icons/Inv_Notecard.png
index 4645ab8e91..96f45bc55e 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Notecard.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Notecard.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Object.png b/indra/newview/skins/default/textures/icons/Inv_Object.png
index f883696a82..fe6b201570 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Object.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Object.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Object_Multi.png b/indra/newview/skins/default/textures/icons/Inv_Object_Multi.png
index 11f4871ad8..3793594059 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Object_Multi.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Object_Multi.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Pants.png b/indra/newview/skins/default/textures/icons/Inv_Pants.png
index fe2389f074..5673bc29ed 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Pants.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Pants.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Physics.png b/indra/newview/skins/default/textures/icons/Inv_Physics.png
index 360baec46d..43bd082d8a 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Physics.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Physics.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Script.png b/indra/newview/skins/default/textures/icons/Inv_Script.png
index 0fba27a7aa..68d2ac425f 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Script.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Script.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Settings.png b/indra/newview/skins/default/textures/icons/Inv_Settings.png
index c43ba349c4..ca6cf10314 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Settings.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Settings.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_SettingsDay.png b/indra/newview/skins/default/textures/icons/Inv_SettingsDay.png
index 258ade1327..d0c4b2cdcd 100644
--- a/indra/newview/skins/default/textures/icons/Inv_SettingsDay.png
+++ b/indra/newview/skins/default/textures/icons/Inv_SettingsDay.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_SettingsSky.png b/indra/newview/skins/default/textures/icons/Inv_SettingsSky.png
index 77858b23c3..5332404d37 100644
--- a/indra/newview/skins/default/textures/icons/Inv_SettingsSky.png
+++ b/indra/newview/skins/default/textures/icons/Inv_SettingsSky.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_SettingsWater.png b/indra/newview/skins/default/textures/icons/Inv_SettingsWater.png
index 46fb58c3f2..88ff803756 100644
--- a/indra/newview/skins/default/textures/icons/Inv_SettingsWater.png
+++ b/indra/newview/skins/default/textures/icons/Inv_SettingsWater.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Shirt.png b/indra/newview/skins/default/textures/icons/Inv_Shirt.png
index 81c1538dd2..ffabff9c6c 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Shirt.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Shirt.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Shoe.png b/indra/newview/skins/default/textures/icons/Inv_Shoe.png
index 1f52b0a6b6..784d1d23a3 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Shoe.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Shoe.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Skin.png b/indra/newview/skins/default/textures/icons/Inv_Skin.png
index b7da922046..a232c5ac67 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Skin.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Skin.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Skirt.png b/indra/newview/skins/default/textures/icons/Inv_Skirt.png
index 246e9a87aa..5970f39b1b 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Skirt.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Skirt.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Snapshot.png b/indra/newview/skins/default/textures/icons/Inv_Snapshot.png
index 39efd2be1b..9eaca9e7ef 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Snapshot.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Snapshot.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Socks.png b/indra/newview/skins/default/textures/icons/Inv_Socks.png
index 30d7d7c239..95a3a68de6 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Socks.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Socks.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Sound.png b/indra/newview/skins/default/textures/icons/Inv_Sound.png
index 44c271c868..138d4c5c36 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Sound.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Sound.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_StockFolderClosed.png b/indra/newview/skins/default/textures/icons/Inv_StockFolderClosed.png
index 4dc484dc22..c3aae7c736 100644
--- a/indra/newview/skins/default/textures/icons/Inv_StockFolderClosed.png
+++ b/indra/newview/skins/default/textures/icons/Inv_StockFolderClosed.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_StockFolderOpen.png b/indra/newview/skins/default/textures/icons/Inv_StockFolderOpen.png
index 0d140b56a7..15fd8225fc 100644
--- a/indra/newview/skins/default/textures/icons/Inv_StockFolderOpen.png
+++ b/indra/newview/skins/default/textures/icons/Inv_StockFolderOpen.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Tattoo.png b/indra/newview/skins/default/textures/icons/Inv_Tattoo.png
index a632197eb5..af5a780685 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Tattoo.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Tattoo.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Texture.png b/indra/newview/skins/default/textures/icons/Inv_Texture.png
index dbc41c5e99..168a97515a 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Texture.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Texture.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Toolbar_SearchVisibility.png b/indra/newview/skins/default/textures/icons/Inv_Toolbar_SearchVisibility.png
index 048da25c92..c4b186c3de 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Toolbar_SearchVisibility.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Toolbar_SearchVisibility.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_TrashClosed.png b/indra/newview/skins/default/textures/icons/Inv_TrashClosed.png
index 7a958c1ec0..89f0caa5a2 100644
--- a/indra/newview/skins/default/textures/icons/Inv_TrashClosed.png
+++ b/indra/newview/skins/default/textures/icons/Inv_TrashClosed.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_TrashOpen.png b/indra/newview/skins/default/textures/icons/Inv_TrashOpen.png
index 11e6bf33bc..d1f1eeaf42 100644
--- a/indra/newview/skins/default/textures/icons/Inv_TrashOpen.png
+++ b/indra/newview/skins/default/textures/icons/Inv_TrashOpen.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Underpants.png b/indra/newview/skins/default/textures/icons/Inv_Underpants.png
index b1e7c2a55f..77f8e55270 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Underpants.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Underpants.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Undershirt.png b/indra/newview/skins/default/textures/icons/Inv_Undershirt.png
index 9340dbb975..477d76cf11 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Undershirt.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Undershirt.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_Universal.png b/indra/newview/skins/default/textures/icons/Inv_Universal.png
index 470febb9b5..65b2f88f02 100644
--- a/indra/newview/skins/default/textures/icons/Inv_Universal.png
+++ b/indra/newview/skins/default/textures/icons/Inv_Universal.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_UnknownObject.png b/indra/newview/skins/default/textures/icons/Inv_UnknownObject.png
index 10f2b31cb5..603a6d7aaa 100644
--- a/indra/newview/skins/default/textures/icons/Inv_UnknownObject.png
+++ b/indra/newview/skins/default/textures/icons/Inv_UnknownObject.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_VersionFolderClosed.png b/indra/newview/skins/default/textures/icons/Inv_VersionFolderClosed.png
index e89a4d7f31..cd561d24ba 100644
--- a/indra/newview/skins/default/textures/icons/Inv_VersionFolderClosed.png
+++ b/indra/newview/skins/default/textures/icons/Inv_VersionFolderClosed.png
diff --git a/indra/newview/skins/default/textures/icons/Inv_VersionFolderOpen.png b/indra/newview/skins/default/textures/icons/Inv_VersionFolderOpen.png
index 659d7d392f..6dc9d451cc 100644
--- a/indra/newview/skins/default/textures/icons/Inv_VersionFolderOpen.png
+++ b/indra/newview/skins/default/textures/icons/Inv_VersionFolderOpen.png
diff --git a/indra/newview/skins/default/textures/icons/List_View_Disabled.png b/indra/newview/skins/default/textures/icons/List_View_Disabled.png
index 155dee5047..125034b0cb 100644
--- a/indra/newview/skins/default/textures/icons/List_View_Disabled.png
+++ b/indra/newview/skins/default/textures/icons/List_View_Disabled.png
diff --git a/indra/newview/skins/default/textures/icons/List_View_On.png b/indra/newview/skins/default/textures/icons/List_View_On.png
index 9127c92c3b..fcf77f004f 100644
--- a/indra/newview/skins/default/textures/icons/List_View_On.png
+++ b/indra/newview/skins/default/textures/icons/List_View_On.png
diff --git a/indra/newview/skins/default/textures/icons/Lock.png b/indra/newview/skins/default/textures/icons/Lock.png
index eb5b5ae7a9..2db6ed0213 100644
--- a/indra/newview/skins/default/textures/icons/Lock.png
+++ b/indra/newview/skins/default/textures/icons/Lock.png
diff --git a/indra/newview/skins/default/textures/icons/Locked_Icon.png b/indra/newview/skins/default/textures/icons/Locked_Icon.png
index 8ead280794..4985af1be1 100644
--- a/indra/newview/skins/default/textures/icons/Locked_Icon.png
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diff --git a/indra/newview/skins/default/textures/icons/Male.png b/indra/newview/skins/default/textures/icons/Male.png
index f3fad77fd0..803171f5c6 100644
--- a/indra/newview/skins/default/textures/icons/Male.png
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diff --git a/indra/newview/skins/default/textures/icons/Microphone_On.png b/indra/newview/skins/default/textures/icons/Microphone_On.png
index c96b500fa1..7a7d39d982 100644
--- a/indra/newview/skins/default/textures/icons/Microphone_On.png
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diff --git a/indra/newview/skins/default/textures/icons/MinusItem_Disabled.png b/indra/newview/skins/default/textures/icons/MinusItem_Disabled.png
index 75bd73cef1..b62ed35182 100644
--- a/indra/newview/skins/default/textures/icons/MinusItem_Disabled.png
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diff --git a/indra/newview/skins/default/textures/icons/MinusItem_Off.png b/indra/newview/skins/default/textures/icons/MinusItem_Off.png
index 6f285f3546..eb7b8838f7 100644
--- a/indra/newview/skins/default/textures/icons/MinusItem_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/MinusItem_Press.png b/indra/newview/skins/default/textures/icons/MinusItem_Press.png
index 50f65765d5..2dc6081cb0 100644
--- a/indra/newview/skins/default/textures/icons/MinusItem_Press.png
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diff --git a/indra/newview/skins/default/textures/icons/OptionsMenu_Disabled.png b/indra/newview/skins/default/textures/icons/OptionsMenu_Disabled.png
index fb341e9c83..5755315e23 100644
--- a/indra/newview/skins/default/textures/icons/OptionsMenu_Disabled.png
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diff --git a/indra/newview/skins/default/textures/icons/OptionsMenu_Off.png b/indra/newview/skins/default/textures/icons/OptionsMenu_Off.png
index 25b055bfc0..2e9a5faa21 100644
--- a/indra/newview/skins/default/textures/icons/OptionsMenu_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/OptionsMenu_Press.png b/indra/newview/skins/default/textures/icons/OptionsMenu_Press.png
index 6e91dd7159..1b08648b51 100644
--- a/indra/newview/skins/default/textures/icons/OptionsMenu_Press.png
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index fb1f7d3a6d..dd12d94ad2 100644
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index e6f614b844..4739c501ad 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_BuildNo_Light.png
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index 84a96a60cb..9826491efd 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_Build_Dark.png
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index d55ebd7c67..7634e5fab0 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_DamageNo_Dark.png
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diff --git a/indra/newview/skins/default/textures/icons/Parcel_Damage_Dark.png b/indra/newview/skins/default/textures/icons/Parcel_Damage_Dark.png
index ae4077488b..7ecd645df2 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_Damage_Dark.png
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diff --git a/indra/newview/skins/default/textures/icons/Parcel_Exp_Color.png b/indra/newview/skins/default/textures/icons/Parcel_Exp_Color.png
index 4813d37198..a1b0faa008 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_Exp_Color.png
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diff --git a/indra/newview/skins/default/textures/icons/Parcel_FlyNo_Dark.png b/indra/newview/skins/default/textures/icons/Parcel_FlyNo_Dark.png
index af65873cb6..831c25a34b 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_FlyNo_Dark.png
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index 6ceb9d3d8f..be829fb5ef 100644
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index 7084e2f591..579bfe58f8 100644
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index d28e5357df..3f4ee0b482 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_ForSale_Light.png
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diff --git a/indra/newview/skins/default/textures/icons/Parcel_Health_Dark.png b/indra/newview/skins/default/textures/icons/Parcel_Health_Dark.png
index d72f02f708..98618de927 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_Health_Dark.png
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index 60e6a00a25..ab5a1680a7 100644
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index 55f97f3b4e..2db94e37c9 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_M_Light.png
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diff --git a/indra/newview/skins/default/textures/icons/Parcel_PG_Dark.png b/indra/newview/skins/default/textures/icons/Parcel_PG_Dark.png
index 11ab1f1e60..e1f7613d04 100644
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index b536762ddc..04d13027d2 100644
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index 8f0fe6a04d..2867004014 100644
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index eba7070b4d..a3a51973af 100644
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index 08c2a18ac3..e8487ca092 100644
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index bf618752f6..5c165c2fac 100644
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index a67bbd0cc5..dbf43152b3 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_R_Light.png
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index 8f9f37a1bf..bfc55fc403 100644
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index 8b1d6c5e14..3477e0654c 100644
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index 60d056b573..eff089487e 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_SeeAVsOff_Dark.png
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index d004b0f750..68f0b14d44 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_SeeAVsOff_Light.png
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index eed28765f7..200e04a59f 100644
--- a/indra/newview/skins/default/textures/icons/Parcel_SeeAVsOn_Dark.png
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index e35de3c2fa..14cafc5bd2 100644
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index eace54ae79..ec316e822e 100644
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index b36a9bd2f0..329620fa69 100644
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index 86ce19474a..81e0fa7bc4 100644
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index cfa12cb7cc..d8fee0fef7 100644
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diff --git a/indra/newview/skins/default/textures/icons/Pathfinding_Disabled.png b/indra/newview/skins/default/textures/icons/Pathfinding_Disabled.png
index 0622141848..ea2ad79611 100644
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index 77f6be569d..5d44412783 100644
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index 580808bf7e..d1609a144b 100644
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index 859db34cae..6b918d1ae6 100644
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index d40eafe793..39a63a70cf 100644
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index e02935672f..c4e625b3c1 100644
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index e594c1a4cb..dac2f2d6db 100644
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index 70ab94e8c2..1d261efcda 100644
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index b52742c6da..f7251ce549 100644
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diff --git a/indra/newview/skins/default/textures/icons/Presets_Icon.png b/indra/newview/skins/default/textures/icons/Presets_Icon.png
index 503ee892a5..13642e88d1 100644
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index 5a6628816b..96d1021f81 100644
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index aeba6b70f7..55d922cda7 100644
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index d668fd8dfa..febe8e78fa 100644
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index 8f8caa10d8..2632eb173b 100644
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index 42a209dda5..fd8b152c12 100644
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index 644edf0ef6..cef3ec4e5a 100644
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index 629c05ecb8..5821566703 100644
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index ecf66c0ee1..ea1b55eca0 100644
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diff --git a/indra/newview/skins/default/textures/icons/Profile_Perm_Online_Enabled.png b/indra/newview/skins/default/textures/icons/Profile_Perm_Online_Enabled.png
index 26123938fa..eb3fc9e713 100644
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index 5d6efbfa2a..bc7a1e7e96 100644
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index 28203324f1..acf4d21aba 100644
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index 6b87be0c3f..1842cd09d0 100644
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index 089d58b090..0ea9dda83e 100644
--- a/indra/newview/skins/default/textures/icons/Progress_12.png
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diff --git a/indra/newview/skins/default/textures/icons/Progress_2.png b/indra/newview/skins/default/textures/icons/Progress_2.png
index 94cb73b1f7..29d6bbcbcb 100644
--- a/indra/newview/skins/default/textures/icons/Progress_2.png
+++ b/indra/newview/skins/default/textures/icons/Progress_2.png
diff --git a/indra/newview/skins/default/textures/icons/Progress_3.png b/indra/newview/skins/default/textures/icons/Progress_3.png
index a04a5b5263..52a03125e9 100644
--- a/indra/newview/skins/default/textures/icons/Progress_3.png
+++ b/indra/newview/skins/default/textures/icons/Progress_3.png
diff --git a/indra/newview/skins/default/textures/icons/Progress_4.png b/indra/newview/skins/default/textures/icons/Progress_4.png
index a467098d82..4b2798519f 100644
--- a/indra/newview/skins/default/textures/icons/Progress_4.png
+++ b/indra/newview/skins/default/textures/icons/Progress_4.png
diff --git a/indra/newview/skins/default/textures/icons/Progress_5.png b/indra/newview/skins/default/textures/icons/Progress_5.png
index ea64f1d907..3f02b8f31a 100644
--- a/indra/newview/skins/default/textures/icons/Progress_5.png
+++ b/indra/newview/skins/default/textures/icons/Progress_5.png
diff --git a/indra/newview/skins/default/textures/icons/Progress_6.png b/indra/newview/skins/default/textures/icons/Progress_6.png
index fe4447935f..04c8f716d4 100644
--- a/indra/newview/skins/default/textures/icons/Progress_6.png
+++ b/indra/newview/skins/default/textures/icons/Progress_6.png
diff --git a/indra/newview/skins/default/textures/icons/Progress_7.png b/indra/newview/skins/default/textures/icons/Progress_7.png
index 64fa294771..c96b4c08d6 100644
--- a/indra/newview/skins/default/textures/icons/Progress_7.png
+++ b/indra/newview/skins/default/textures/icons/Progress_7.png
diff --git a/indra/newview/skins/default/textures/icons/Progress_8.png b/indra/newview/skins/default/textures/icons/Progress_8.png
index a1c9a7f2eb..9463f50707 100644
--- a/indra/newview/skins/default/textures/icons/Progress_8.png
+++ b/indra/newview/skins/default/textures/icons/Progress_8.png
diff --git a/indra/newview/skins/default/textures/icons/Progress_9.png b/indra/newview/skins/default/textures/icons/Progress_9.png
index f3e9723184..928a3e934e 100644
--- a/indra/newview/skins/default/textures/icons/Progress_9.png
+++ b/indra/newview/skins/default/textures/icons/Progress_9.png
diff --git a/indra/newview/skins/default/textures/icons/Refresh_Off.png b/indra/newview/skins/default/textures/icons/Refresh_Off.png
index a8acfda741..e645a8159f 100644
--- a/indra/newview/skins/default/textures/icons/Refresh_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/Search_Icon.png b/indra/newview/skins/default/textures/icons/Search_Icon.png
index 541aa8f52a..0ea7b14f81 100644
--- a/indra/newview/skins/default/textures/icons/Search_Icon.png
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diff --git a/indra/newview/skins/default/textures/icons/Shirt_Large.png b/indra/newview/skins/default/textures/icons/Shirt_Large.png
index 0f3846bccc..06fce6bbaa 100644
--- a/indra/newview/skins/default/textures/icons/Shirt_Large.png
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diff --git a/indra/newview/skins/default/textures/icons/Shop.png b/indra/newview/skins/default/textures/icons/Shop.png
index 8977c49195..93353cf2fe 100644
--- a/indra/newview/skins/default/textures/icons/Shop.png
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diff --git a/indra/newview/skins/default/textures/icons/SkipBackward_Off.png b/indra/newview/skins/default/textures/icons/SkipBackward_Off.png
index 8fc10e6583..20fd2b8e22 100644
--- a/indra/newview/skins/default/textures/icons/SkipBackward_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/SkipForward_Off.png b/indra/newview/skins/default/textures/icons/SkipForward_Off.png
index 2892e3cfa9..30e28d3d31 100644
--- a/indra/newview/skins/default/textures/icons/SkipForward_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/StopReload_Off.png b/indra/newview/skins/default/textures/icons/StopReload_Off.png
index 698569a540..500a81d715 100644
--- a/indra/newview/skins/default/textures/icons/StopReload_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/StopReload_Over.png b/indra/newview/skins/default/textures/icons/StopReload_Over.png
index 251b38630a..a065a37d14 100644
--- a/indra/newview/skins/default/textures/icons/StopReload_Over.png
+++ b/indra/newview/skins/default/textures/icons/StopReload_Over.png
diff --git a/indra/newview/skins/default/textures/icons/Stop_Off.png b/indra/newview/skins/default/textures/icons/Stop_Off.png
index 3ee215d36f..2d00083e2e 100644
--- a/indra/newview/skins/default/textures/icons/Stop_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/Sync_Disabled.png b/indra/newview/skins/default/textures/icons/Sync_Disabled.png
index ca2e8def97..7b39e7cd6f 100644
--- a/indra/newview/skins/default/textures/icons/Sync_Disabled.png
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diff --git a/indra/newview/skins/default/textures/icons/Sync_Progress_1.png b/indra/newview/skins/default/textures/icons/Sync_Progress_1.png
index 624e556376..218edaa986 100644
--- a/indra/newview/skins/default/textures/icons/Sync_Progress_1.png
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diff --git a/indra/newview/skins/default/textures/icons/Sync_Progress_2.png b/indra/newview/skins/default/textures/icons/Sync_Progress_2.png
index 5769803b3f..23cb9d63c0 100644
--- a/indra/newview/skins/default/textures/icons/Sync_Progress_2.png
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diff --git a/indra/newview/skins/default/textures/icons/Sync_Progress_3.png b/indra/newview/skins/default/textures/icons/Sync_Progress_3.png
index 92d4bfb020..490826011a 100644
--- a/indra/newview/skins/default/textures/icons/Sync_Progress_3.png
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diff --git a/indra/newview/skins/default/textures/icons/Sync_Progress_4.png b/indra/newview/skins/default/textures/icons/Sync_Progress_4.png
index 6d43eb3a9f..de1c815e90 100644
--- a/indra/newview/skins/default/textures/icons/Sync_Progress_4.png
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diff --git a/indra/newview/skins/default/textures/icons/Sync_Progress_5.png b/indra/newview/skins/default/textures/icons/Sync_Progress_5.png
index 766d063c99..2897b37382 100644
--- a/indra/newview/skins/default/textures/icons/Sync_Progress_5.png
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diff --git a/indra/newview/skins/default/textures/icons/Sync_Progress_6.png b/indra/newview/skins/default/textures/icons/Sync_Progress_6.png
index dfe7f68b72..862410e9e4 100644
--- a/indra/newview/skins/default/textures/icons/Sync_Progress_6.png
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diff --git a/indra/newview/skins/default/textures/icons/System_Notification_Large.png b/indra/newview/skins/default/textures/icons/System_Notification_Large.png
index 434ce3e8b6..01c6e31f41 100644
--- a/indra/newview/skins/default/textures/icons/System_Notification_Large.png
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diff --git a/indra/newview/skins/default/textures/icons/System_Notification_Small.png b/indra/newview/skins/default/textures/icons/System_Notification_Small.png
index 027a8446d8..69b823d852 100644
--- a/indra/newview/skins/default/textures/icons/System_Notification_Small.png
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diff --git a/indra/newview/skins/default/textures/icons/TrashItem_Disabled.png b/indra/newview/skins/default/textures/icons/TrashItem_Disabled.png
index caaf45a99f..800d9434d2 100644
--- a/indra/newview/skins/default/textures/icons/TrashItem_Disabled.png
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diff --git a/indra/newview/skins/default/textures/icons/TrashItem_Off.png b/indra/newview/skins/default/textures/icons/TrashItem_Off.png
index bb64920ec4..0cbff4f1d7 100644
--- a/indra/newview/skins/default/textures/icons/TrashItem_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/TrashItem_Press.png b/indra/newview/skins/default/textures/icons/TrashItem_Press.png
index c62f833d86..fac13226e7 100644
--- a/indra/newview/skins/default/textures/icons/TrashItem_Press.png
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diff --git a/indra/newview/skins/default/textures/icons/UnZoom_Off.png b/indra/newview/skins/default/textures/icons/UnZoom_Off.png
index c794113755..34ec3f5de8 100644
--- a/indra/newview/skins/default/textures/icons/UnZoom_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/UpArrow_Off.png b/indra/newview/skins/default/textures/icons/UpArrow_Off.png
index 00015bce20..d5ddc353e7 100644
--- a/indra/newview/skins/default/textures/icons/UpArrow_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/Video_URL_Off.png b/indra/newview/skins/default/textures/icons/Video_URL_Off.png
index 40e5df7d81..d37a189645 100644
--- a/indra/newview/skins/default/textures/icons/Video_URL_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/VoicePTT_Lvl3.png b/indra/newview/skins/default/textures/icons/VoicePTT_Lvl3.png
index 14ec77b99a..a4a171bd81 100644
--- a/indra/newview/skins/default/textures/icons/VoicePTT_Lvl3.png
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diff --git a/indra/newview/skins/default/textures/icons/VoicePTT_Off.png b/indra/newview/skins/default/textures/icons/VoicePTT_Off.png
index 48be51e9af..533663a4fa 100644
--- a/indra/newview/skins/default/textures/icons/VoicePTT_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/Web_Profile_Off.png b/indra/newview/skins/default/textures/icons/Web_Profile_Off.png
index 5716dd6d22..cf8f9c8f94 100644
--- a/indra/newview/skins/default/textures/icons/Web_Profile_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/YouAreHere_Badge.png b/indra/newview/skins/default/textures/icons/YouAreHere_Badge.png
index c057e9743d..ed1805c096 100644
--- a/indra/newview/skins/default/textures/icons/YouAreHere_Badge.png
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diff --git a/indra/newview/skins/default/textures/icons/Zoom_Off.png b/indra/newview/skins/default/textures/icons/Zoom_Off.png
index d096720c9c..833e608201 100644
--- a/indra/newview/skins/default/textures/icons/Zoom_Off.png
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diff --git a/indra/newview/skins/default/textures/icons/collapse_to_one_line.png b/indra/newview/skins/default/textures/icons/collapse_to_one_line.png
index d57144a645..3730924ad8 100644
--- a/indra/newview/skins/default/textures/icons/collapse_to_one_line.png
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diff --git a/indra/newview/skins/default/textures/icons/edit_mine.png b/indra/newview/skins/default/textures/icons/edit_mine.png
index a0bc7efd25..2fb10deba2 100644
--- a/indra/newview/skins/default/textures/icons/edit_mine.png
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diff --git a/indra/newview/skins/default/textures/icons/edit_theirs.png b/indra/newview/skins/default/textures/icons/edit_theirs.png
index ed36ad7cfc..586c08c181 100644
--- a/indra/newview/skins/default/textures/icons/edit_theirs.png
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diff --git a/indra/newview/skins/default/textures/icons/emoji_picker_icon.png b/indra/newview/skins/default/textures/icons/emoji_picker_icon.png
index ad4f3fa63c..6c1a1a3c62 100644
--- a/indra/newview/skins/default/textures/icons/emoji_picker_icon.png
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diff --git a/indra/newview/skins/default/textures/icons/expand_one_liner.png b/indra/newview/skins/default/textures/icons/expand_one_liner.png
index 58b7d90131..0d1a60547a 100644
--- a/indra/newview/skins/default/textures/icons/expand_one_liner.png
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diff --git a/indra/newview/skins/default/textures/icons/map_placeholder.png b/indra/newview/skins/default/textures/icons/map_placeholder.png
index 31e457aa75..80e5deac7e 100644
--- a/indra/newview/skins/default/textures/icons/map_placeholder.png
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diff --git a/indra/newview/skins/default/textures/icons/nearby_chat_icon.png b/indra/newview/skins/default/textures/icons/nearby_chat_icon.png
index 5ac4258b9d..c5f52f010e 100644
--- a/indra/newview/skins/default/textures/icons/nearby_chat_icon.png
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diff --git a/indra/newview/skins/default/textures/icons/object_icon.png b/indra/newview/skins/default/textures/icons/object_icon.png
index 223874e631..51bf0b0649 100644
--- a/indra/newview/skins/default/textures/icons/object_icon.png
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diff --git a/indra/newview/skins/default/textures/icons/pop_up_caution.png b/indra/newview/skins/default/textures/icons/pop_up_caution.png
index 8364bcc328..63b5cdfe83 100644
--- a/indra/newview/skins/default/textures/icons/pop_up_caution.png
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diff --git a/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_off.png b/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_off.png
index 3a2ed399b2..331553492c 100644
--- a/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_off.png
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diff --git a/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_off_pressed.png b/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_off_pressed.png
index 789f59a491..e9e9c1b626 100644
--- a/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_off_pressed.png
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diff --git a/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_on.png b/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_on.png
index 4fb56c389c..4f5374d614 100644
--- a/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_on.png
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diff --git a/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_on_pressed.png b/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_on_pressed.png
index ae04a256a4..e8a64541ee 100644
--- a/indra/newview/skins/default/textures/icons/profile_group_visibility_eye_on_pressed.png
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diff --git a/indra/newview/skins/default/textures/icons/unknown_icon.png b/indra/newview/skins/default/textures/icons/unknown_icon.png
index 8441d86596..9a4e7f8616 100644
--- a/indra/newview/skins/default/textures/icons/unknown_icon.png
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diff --git a/indra/newview/skins/default/textures/widgets/Arrow_Down.png b/indra/newview/skins/default/textures/widgets/Arrow_Down.png
index cb4eea953c..8b592ed840 100644
--- a/indra/newview/skins/default/textures/widgets/Arrow_Down.png
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diff --git a/indra/newview/skins/default/textures/widgets/Arrow_Left.png b/indra/newview/skins/default/textures/widgets/Arrow_Left.png
index a424282839..04416541b9 100644
--- a/indra/newview/skins/default/textures/widgets/Arrow_Left.png
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diff --git a/indra/newview/skins/default/textures/widgets/Arrow_Right.png b/indra/newview/skins/default/textures/widgets/Arrow_Right.png
index e32bee8f34..e57452a558 100644
--- a/indra/newview/skins/default/textures/widgets/Arrow_Right.png
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diff --git a/indra/newview/skins/default/textures/widgets/Arrow_Small_Left.png b/indra/newview/skins/default/textures/widgets/Arrow_Small_Left.png
index 2d624c3779..a1b82d5101 100644
--- a/indra/newview/skins/default/textures/widgets/Arrow_Small_Left.png
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diff --git a/indra/newview/skins/default/textures/widgets/Arrow_Small_Right.png b/indra/newview/skins/default/textures/widgets/Arrow_Small_Right.png
index 91c03c426e..0e05d76852 100644
--- a/indra/newview/skins/default/textures/widgets/Arrow_Small_Right.png
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diff --git a/indra/newview/skins/default/textures/widgets/Arrow_Small_Up.png b/indra/newview/skins/default/textures/widgets/Arrow_Small_Up.png
index 38aac0e5ca..348bc4c019 100644
--- a/indra/newview/skins/default/textures/widgets/Arrow_Small_Up.png
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diff --git a/indra/newview/skins/default/textures/widgets/Arrow_Up.png b/indra/newview/skins/default/textures/widgets/Arrow_Up.png
index 48df69d82e..8b3da09d79 100644
--- a/indra/newview/skins/default/textures/widgets/Arrow_Up.png
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diff --git a/indra/newview/skins/default/textures/widgets/Badge_Background.png b/indra/newview/skins/default/textures/widgets/Badge_Background.png
index 5089c30312..5abc1bf489 100644
--- a/indra/newview/skins/default/textures/widgets/Badge_Background.png
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diff --git a/indra/newview/skins/default/textures/widgets/Badge_Border.png b/indra/newview/skins/default/textures/widgets/Badge_Border.png
index 4b086a63fb..57d3be2320 100644
--- a/indra/newview/skins/default/textures/widgets/Badge_Border.png
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diff --git a/indra/newview/skins/default/textures/widgets/BreadCrumbBtn_Left_Disabled.png b/indra/newview/skins/default/textures/widgets/BreadCrumbBtn_Left_Disabled.png
index 3897e16801..139d71ae2e 100644
--- a/indra/newview/skins/default/textures/widgets/BreadCrumbBtn_Left_Disabled.png
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diff --git a/indra/newview/skins/default/textures/widgets/BreadCrumbBtn_Middle_Disabled.png b/indra/newview/skins/default/textures/widgets/BreadCrumbBtn_Middle_Disabled.png
index d570f77f6d..2cf3de24c0 100644
--- a/indra/newview/skins/default/textures/widgets/BreadCrumbBtn_Middle_Disabled.png
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diff --git a/indra/newview/skins/default/textures/widgets/BreadCrumbBtn_Right_Disabled.png b/indra/newview/skins/default/textures/widgets/BreadCrumbBtn_Right_Disabled.png
index 2ffbc4a16f..d9c9692114 100644
--- a/indra/newview/skins/default/textures/widgets/BreadCrumbBtn_Right_Disabled.png
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diff --git a/indra/newview/skins/default/textures/widgets/Checkbox_Disabled.png b/indra/newview/skins/default/textures/widgets/Checkbox_Disabled.png
index c1ee210099..8439f82e29 100644
--- a/indra/newview/skins/default/textures/widgets/Checkbox_Disabled.png
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index 2525405f37..cb9a04d84f 100644
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index 2d9dba1592..0ec090504a 100644
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index beaa7bcbf6..5759f7de69 100644
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index 5bced95a89..ba46e91c55 100644
--- a/indra/newview/skins/default/textures/widgets/Checkbox_On_Press.png
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index d492b30b40..1377d35e1a 100644
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index 186822da43..768909d447 100644
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index cd002b3973..c01db44707 100644
--- a/indra/newview/skins/default/textures/widgets/SliderTrack_Vert.png
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index fa79cb6260..572535f1ab 100644
--- a/indra/newview/skins/default/textures/widgets/TextField_Search_Active.png
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index 8b504af101..94b4b158f7 100644
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index e3944289c6..7768da04e8 100644
--- a/indra/newview/skins/default/textures/widgets/TextField_Search_Highlight.png
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index 3c4d6a965d..1be53bdaa2 100644
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index fb5067503d..6304124aec 100644
--- a/indra/newview/skins/default/textures/widgets/bevel_background.png
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index a1425ccfa0..073606628c 100644
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index 232c812aae..c08b54c269 100644
--- a/indra/newview/skins/default/textures/widgets/track_control_rotate_bottom.png
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index 911618b08e..a2b37d1b43 100644
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+++ b/indra/newview/skins/default/textures/windows/login_sl_logo_small.png
diff --git a/indra/newview/skins/default/textures/windows/startup_logo.png b/indra/newview/skins/default/textures/windows/startup_logo.png
index b89449692b..6a81a6451d 100644
--- a/indra/newview/skins/default/textures/windows/startup_logo.png
+++ b/indra/newview/skins/default/textures/windows/startup_logo.png
diff --git a/indra/newview/skins/default/textures/windows/yellow_gradient.png b/indra/newview/skins/default/textures/windows/yellow_gradient.png
index 5bd21b4297..4a07282ecb 100644
--- a/indra/newview/skins/default/textures/windows/yellow_gradient.png
+++ b/indra/newview/skins/default/textures/windows/yellow_gradient.png
diff --git a/indra/newview/skins/default/xui/de/floater_texture_fetch_debugger.xml b/indra/newview/skins/default/xui/de/floater_texture_fetch_debugger.xml
deleted file mode 100644
index 97b0364832..0000000000
--- a/indra/newview/skins/default/xui/de/floater_texture_fetch_debugger.xml
+++ /dev/null
@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="TexFetchDebugger" title="Debugger für Texturabruffehler">
-	<text name="total_num_fetched_label">
-		1, Gesamtzahl abgerufener Texturen: [NUM]
-	</text>
-	<text name="total_num_fetching_requests_label">
-		2, Gesamtzahl von Abrufanforderungen: [NUM]
-	</text>
-	<text name="total_num_cache_hits_label">
-		3, Gesamtzahl von Cachetreffern: [NUM]
-	</text>
-	<text name="total_num_visible_tex_label">
-		4, Gesamtzahl sichtbarer Texturen: [NUM]
-	</text>
-	<text name="total_num_visible_tex_fetch_req_label">
-		5, Gesamtzahl von Abrufanforderungen für sichtbare Texturen: [NUM]
-	</text>
-	<text name="total_fetched_data_label">
-		6, Gesamtmenge abgerufener Daten: [SIZE1] KB, decodierte Daten: [SIZE2] KB, [PIXEL] MPixel
-	</text>
-	<text name="total_fetched_vis_data_label">
-		7, Gesamtmenge sichtbarer Daten: [SIZE1] KB, decodierte Daten: [SIZE2] KB
-	</text>
-	<text name="total_fetched_rendered_data_label">
-		8, Gesamtmenge dargestellter Daten: [SIZE1] KB, decodierte Daten: [SIZE2] KB, [PIXEL] MPixel
-	</text>
-	<text name="total_time_cache_read_label">
-		9, Gesamtzeit Cache-Lesezugriffe: [TIME] s
-	</text>
-	<text name="total_time_cache_write_label">
-		10, Gesamtzeit Cache-Schreibzugriffe: [TIME] s
-	</text>
-	<text name="total_time_decode_label">
-		11, Gesamtzeit Decodierung: [TIME] s
-	</text>
-	<text name="total_time_gl_label">
-		12, Gesamtzeit GL-Texturerstellung: [TIME] s
-	</text>
-	<text name="total_time_http_label">
-		13, Gesamtzeit HTTP-Abrufe: [TIME] s
-	</text>
-	<text name="total_time_fetch_label">
-		14, Gesamtzeit für alle Abrufe: [TIME] s
-	</text>
-	<text name="total_time_refetch_vis_cache_label">
-		15, Neuabruf sichtbarer Texturen aus Cache, Zeit: [TIME] s, Abrufmenge: [SIZE2] KB, [PIXEL] MPixel
-	</text>
-	<text name="total_time_refetch_all_cache_label">
-		16, Neuabruf aller Texturen aus Cache, Zeit: [TIME] s, Abrufmenge: [SIZE2] KB, [PIXEL] MPixel
-	</text>
-	<text name="total_time_refetch_vis_http_label">
-		17, Neuabruf sichtbarer Texturen von HTTP, Zeit: [TIME] s, Abrufmenge: [SIZE2] KB, [PIXEL] MPixel
-	</text>
-	<text name="total_time_refetch_all_http_label">
-		18, Neuabruf aller Texturen von HTTP, Zeit: [TIME] s, Abrufmenge: [SIZE2] KB, [PIXEL] MPixel
-	</text>
-	<spinner label="19, Verhältnis Texel/Pixel:" name="texel_pixel_ratio"/>
-	<text name="texture_source_label">
-		20, Texturquelle:
-	</text>
-	<radio_group name="texture_source">
-		<radio_item label="Cache + HTTP" name="0"/>
-		<radio_item label="Nur HTTP" name="1"/>
-	</radio_group>
-	<button label="Starten" name="start_btn"/>
-	<button label="Zurücksetzen" name="clear_btn"/>
-	<button label="Schließen" name="close_btn"/>
-	<button label="Cache-Lesezugriff" name="cacheread_btn"/>
-	<button label="Cache-Schreibzugriff" name="cachewrite_btn"/>
-	<button label="HTTP" name="http_btn"/>
-	<button label="Decodieren" name="decode_btn"/>
-	<button label="GL-Textur" name="gl_btn"/>
-	<button label="Neuabruf sichtbarer Texturen (Cache)" name="refetchviscache_btn"/>
-	<button label="Neuabruf des gesamten Cache" name="refetchallcache_btn"/>
-	<button label="Neuabruf sichtbarer Texturen (HTTP)" name="refetchvishttp_btn"/>
-	<button label="Neuabruf des gesamten HTTP" name="refetchallhttp_btn"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/en/floater_adjust_environment.xml b/indra/newview/skins/default/xui/en/floater_adjust_environment.xml
index 91a1dffcb5..889eeb5369 100644
--- a/indra/newview/skins/default/xui/en/floater_adjust_environment.xml
+++ b/indra/newview/skins/default/xui/en/floater_adjust_environment.xml
@@ -12,7 +12,7 @@
          can_resize="false">
   <string name="hdr_string">HDR Scale:</string>
   <string name="brightness_string">Brightness:</string>
-  <string name="hdr_tooltip">Intensity of lightning effects such as realistically bright skies and dynamic exposure. 1.0 is the default, 0 is off, values between 0 and 1 are mixing Ambient with HDR.</string>
+  <string name="hdr_tooltip">Intensity of lighting effects such as realistically bright skies and dynamic exposure. 1.0 is the default, 0 is off, values between 0 and 1 are mixing Ambient with HDR.</string>
     <layout_stack name="outer_stack"
                   width="845"
                   height="275"
diff --git a/indra/newview/skins/default/xui/en/floater_change_item_thumbnail.xml b/indra/newview/skins/default/xui/en/floater_change_item_thumbnail.xml
index 223069ed0c..465580301e 100644
--- a/indra/newview/skins/default/xui/en/floater_change_item_thumbnail.xml
+++ b/indra/newview/skins/default/xui/en/floater_change_item_thumbnail.xml
@@ -9,6 +9,10 @@
  width="319">
 
   <floater.string
+    name="multiple_item_names">
+      Multiple items selected
+  </floater.string>
+  <floater.string
     name="title_item_thumbnail">
     CHANGE ITEM IMAGE
   </floater.string>
@@ -72,6 +76,22 @@
     height="256"
     width="256"
         />
+  <text
+   name="multiple_lbl"
+   font="SansSerifBig"
+   text_color="White"
+   halign="center"
+   valign="center"
+   use_ellipses="true"
+   follows="top|left"
+   layout="topleft"
+   height="256"
+   width="256"
+   top_delta="0"
+   left_delta="0"
+   visible =" false">
+      Multiple thumbnails
+  </text>
 
   <button
     follows="right|bottom"
diff --git a/indra/newview/skins/default/xui/en/floater_preferences_graphics_advanced.xml b/indra/newview/skins/default/xui/en/floater_preferences_graphics_advanced.xml
index b9259256a6..8c4019a668 100644
--- a/indra/newview/skins/default/xui/en/floater_preferences_graphics_advanced.xml
+++ b/indra/newview/skins/default/xui/en/floater_preferences_graphics_advanced.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8" standalone="yes" ?>
 <floater
-  height="400"
+  height="411"
   layout="topleft"
   name="prefs_graphics_advanced"
   help_topic="Preferences_Graphics_Advanced"
@@ -102,6 +102,22 @@
     width="65">
        Low
   </text>
+  <slider
+    control_name="RenderLocalLightCount"
+    decimal_digits="0"
+    follows="left|top"
+    height="16"
+    increment="1"
+    initial_value="256"
+    label="Max. nearby lights:"
+    label_width="185"
+    layout="topleft"
+    left="30"
+    min_val="0"
+    max_val="8192"
+    name="MaxLights"
+    top_delta="16"
+    width="336" />
 
   <check_box
     control_name="RenderVSyncEnable"
@@ -128,6 +144,42 @@
      Avatar
   </text>
 
+    <text
+      type="string"
+      length="1"
+      follows="left|top"
+      height="16"
+      layout="topleft"
+      left="30"
+      top_delta="16"
+      width="128"
+      name="AvatarComplexityModeLabel"
+      text_readonly_color="LabelDisabledColor">
+        Avatar display:
+    </text>
+
+    <combo_box
+     control_name="RenderAvatarComplexityMode"
+     height="18"
+     layout="topleft"
+     left_delta="130"
+     top_delta="0"
+     name="AvatarComplexityMode"
+     width="150">
+        <combo_box.item
+          label="Limit by complexity"
+          name="0"
+          value="0"/>
+        <combo_box.item
+          label="Always show friends"
+          name="1"
+          value="1"/>
+        <combo_box.item
+          label="Only show friends"
+          name="2"
+          value="2"/>
+    </combo_box>
+
   <slider
     control_name="IndirectMaxComplexity"
     tool_tip="Controls at what point a visually complex avatar is drawn as a JellyDoll"
@@ -493,7 +545,7 @@
   </text>
    <view_border
       bevel_style="in"
-      height="322"
+      height="357"
       layout="topleft"
       left="385"
       name="vert_border"
@@ -812,21 +864,21 @@
    name="HeroProbeUpdateRate"
    width="150">
     <combo_box.item
-      label="Every Frame"
-      name="0"
-      value="1"/>
+      label="Low"
+      name="6"
+      value="6"/>
     <combo_box.item
-      label="Every 2nd Frame"
+      label="Medium"
+      name="3"
+      value="3"/>
+    <combo_box.item
+      label="High"
       name="1"
       value="2"/>
     <combo_box.item
-      label="Every 3rd Frame"
-      name="2"
-      value="3"/>
-    <combo_box.item
-      label="Every 4th Frame"
-      name="3"
-      value="4"/>
+      label="Ultra"
+      name="0"
+      value="1"/>
   </combo_box>
   <!-- End of mirror settings -->
 
@@ -837,7 +889,7 @@
       layout="topleft"
       left="13"
       name="horiz_border"
-      top="338"
+      top="373"
       top_delta="5"
       width="774"/>
   <button
@@ -847,7 +899,7 @@
     layout="topleft"
     left="20"
     name="Defaults"
-    top_delta="20"
+    top_delta="7"
     width="210">
     <button.commit_callback
       function="Pref.HardwareDefaults" />
diff --git a/indra/newview/skins/default/xui/en/menu_gallery_inventory.xml b/indra/newview/skins/default/xui/en/menu_gallery_inventory.xml
index c11f1c88cb..16907d3577 100644
--- a/indra/newview/skins/default/xui/en/menu_gallery_inventory.xml
+++ b/indra/newview/skins/default/xui/en/menu_gallery_inventory.xml
@@ -426,6 +426,234 @@
   <menu_item_separator
    layout="topleft"
    name="Subfolder Separator" />
+  <menu
+   label="Create new"
+   layout="topleft"
+   name="create_new">
+      <menu_item_call
+       label="New Folder"
+       layout="topleft"
+       name="New Folder">
+          <menu_item_call.on_click
+           function="Inventory.DoCreate"
+           parameter="category" />
+      </menu_item_call>
+      <menu_item_call
+       label="New Script"
+       layout="topleft"
+       name="New Script">
+          <menu_item_call.on_click
+           function="Inventory.DoCreate"
+           parameter="lsl" />
+      </menu_item_call>
+      <menu_item_call
+       label="New Notecard"
+       layout="topleft"
+       name="New Note">
+          <menu_item_call.on_click
+           function="Inventory.DoCreate"
+           parameter="notecard" />
+      </menu_item_call>
+      <menu_item_call
+       label="New Gesture"
+       layout="topleft"
+       name="New Gesture">
+          <menu_item_call.on_click
+           function="Inventory.DoCreate"
+           parameter="gesture" />
+      </menu_item_call>
+      <menu_item_call
+       label="New Material"
+       layout="topleft"
+       name="New Material">
+          <menu_item_call.on_click
+           function="Inventory.DoCreate"
+           parameter="material" />
+          <menu_item_call.on_enable
+           function="Inventory.MaterialsEnabled" />
+      </menu_item_call>
+      <menu
+       label="New Clothes"
+       layout="topleft"
+       name="New Clothes">
+          <menu_item_call
+           label="New Shirt"
+           layout="topleft"
+           name="New Shirt">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="shirt" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Pants"
+           layout="topleft"
+           name="New Pants">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="pants" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Shoes"
+           layout="topleft"
+           name="New Shoes">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="shoes" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Socks"
+           layout="topleft"
+           name="New Socks">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="socks" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Jacket"
+           layout="topleft"
+           name="New Jacket">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="jacket" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Skirt"
+           layout="topleft"
+           name="New Skirt">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="skirt" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Gloves"
+           layout="topleft"
+           name="New Gloves">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="gloves" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Undershirt"
+           layout="topleft"
+           name="New Undershirt">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="undershirt" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Underpants"
+           layout="topleft"
+           name="New Underpants">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="underpants" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Alpha Mask"
+           layout="topleft"
+           name="New Alpha Mask">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="alpha" />
+            </menu_item_call>
+          <menu_item_call
+           label="New Tattoo"
+           layout="topleft"
+           name="New Tattoo">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="tattoo" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Universal"
+           layout="topleft"
+           name="New Universal">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="universal" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Physics"
+           layout="topleft"
+           name="New Physics">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="physics" />
+          </menu_item_call>
+      </menu>
+      <menu
+       label="New Body Parts"
+       layout="topleft"
+       name="New Body Parts">
+          <menu_item_call
+           label="New Shape"
+           layout="topleft"
+           name="New Shape">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="shape" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Skin"
+           layout="topleft"
+           name="New Skin">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="skin" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Hair"
+           layout="topleft"
+           name="New Hair">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="hair" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Eyes"
+           layout="topleft"
+           name="New Eyes">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="eyes" />
+          </menu_item_call>
+      </menu>
+      <menu
+       label="New Settings"
+       layout="topleft"
+       name="New Settings">
+          <menu_item_call
+           label="New Sky"
+           layout="topleft"
+           name="New Sky">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="sky"/>
+              <menu_item_call.on_enable
+               function="Inventory.EnvironmentEnabled" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Water"
+           layout="topleft"
+           name="New Water">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="water"/>
+              <menu_item_call.on_enable
+               function="Inventory.EnvironmentEnabled" />
+          </menu_item_call>
+          <menu_item_call
+           label="New Day Cycle"
+           layout="topleft"
+           name="New Day Cycle">
+              <menu_item_call.on_click
+               function="Inventory.DoCreate"
+               parameter="daycycle"/>
+              <menu_item_call.on_enable
+               function="Inventory.EnvironmentEnabled" />
+          </menu_item_call>
+      </menu>
+  </menu>
   <menu_item_call
    label="Create folder from selected"
    layout="topleft"
diff --git a/indra/newview/skins/default/xui/en/menu_nearby_media.xml b/indra/newview/skins/default/xui/en/menu_nearby_media.xml
new file mode 100644
index 0000000000..7c91241a19
--- /dev/null
+++ b/indra/newview/skins/default/xui/en/menu_nearby_media.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8" standalone="yes"?>
+<toggleable_menu
+     name="menu_nearby_media"
+     left="0"
+     bottom="0"
+     visible="false"
+     mouse_opaque="false">
+    <menu_item_call
+     label="Copy Url"
+     name="copy_url">
+        <menu_item_call.on_click
+         function="SelectedMediaCtrl.Action"
+         parameter="copy_url" />
+    </menu_item_call>
+    <menu_item_call
+     label="Copy Data"
+     name="copy_data">
+        <menu_item_call.on_click
+         function="SelectedMediaCtrl.Action"
+         parameter="copy_data" />
+        <menu_item_call.on_visible
+         function="SelectedMediaCtrl.Visible"
+         parameter="copy_data" />
+    </menu_item_call>
+</toggleable_menu>
diff --git a/indra/newview/skins/default/xui/en/menu_object.xml b/indra/newview/skins/default/xui/en/menu_object.xml
index cbd38b1db8..2df581fa2c 100644
--- a/indra/newview/skins/default/xui/en/menu_object.xml
+++ b/indra/newview/skins/default/xui/en/menu_object.xml
@@ -173,6 +173,8 @@
         function="Object.Take"/>
     <menu_item_call.on_enable
         function="Object.VisibleTake"/>
+    <menu_item_call.on_visible
+        function="Object.VisibleTakeSingle"/>
   </menu_item_call>
   <menu_item_call
       enabled="false"
@@ -182,6 +184,52 @@
         function="Tools.TakeCopy" />
     <menu_item_call.on_enable
         function="Tools.EnableTakeCopy" />
+    <menu_item_call.on_visible
+        function="Object.VisibleTakeSingle"/>
+  </menu_item_call>
+  <menu_item_call
+      label="Take as combined item"
+      layout="topleft"
+      name="Take combined">
+      <menu_item_call.on_click
+        function="Object.Take"/>
+      <menu_item_call.on_enable
+        function="Object.VisibleTake"/>
+      <menu_item_call.on_visible
+        function="Object.VisibleTakeMultiple"/>
+  </menu_item_call>
+  <menu_item_call
+      enabled="false"
+      label="Take copy as combined item"
+      name="Take Copy combined">
+      <menu_item_call.on_click
+        function="Tools.TakeCopy" />
+      <menu_item_call.on_enable
+        function="Tools.EnableTakeCopy" />
+      <menu_item_call.on_visible
+        function="Object.VisibleTakeMultiple"/>
+  </menu_item_call>
+  <menu_item_call
+      label="Take as separate items"
+      layout="topleft"
+      name="Take Separate">
+      <menu_item_call.on_click
+        function="Object.TakeSeparate"/>
+      <menu_item_call.on_enable
+        function="Object.EnableTakeMultiple"/>
+      <menu_item_call.on_visible
+        function="Object.VisibleTakeMultiple"/>
+  </menu_item_call>
+  <menu_item_call
+      label="Take copies as separate items"
+      layout="topleft"
+       name="Take Copy Separate">
+       <menu_item_call.on_click
+        function="Object.TakeSeparateCopy"/>
+       <menu_item_call.on_enable
+        function="Tools.EnableCopySeparate"/>
+       <menu_item_call.on_visible
+        function="Object.VisibleTakeMultiple"/>
   </menu_item_call>
   <menu_item_call
       enabled="false"
diff --git a/indra/newview/skins/default/xui/en/menu_viewer.xml b/indra/newview/skins/default/xui/en/menu_viewer.xml
index 145c82a614..46056e884d 100644
--- a/indra/newview/skins/default/xui/en/menu_viewer.xml
+++ b/indra/newview/skins/default/xui/en/menu_viewer.xml
@@ -2823,6 +2823,70 @@ function="World.EnvPreset"
                 parameter="mem_leaking" />
                </menu_item_call>
         </menu>
+      <menu
+         create_jump_keys="true"
+         label="GLTF"
+         name="GLTF"
+         tear_off="true">
+        <menu_item_call
+         label="Open..."
+         name="Open...">
+            <!--<menu_item_call.on_enable
+             function="EnableGLTF"/>-->
+          <menu_item_call.on_click
+           function="Advanced.ClickGLTFOpen" />
+        </menu_item_call>
+        <menu_item_call
+         label="Save As..."
+         name="Save As...">
+          <menu_item_call.on_enable
+             function="EnableGLTFSaveAs"/>
+          <menu_item_call.on_click
+           function="Advanced.ClickGLTFSaveAs" />
+        </menu_item_call>
+        <menu_item_call
+         label="Upload..."
+         name="Upload...">
+          <menu_item_call.on_enable
+             function="EnableGLTFUpload"/>
+          <menu_item_call.on_click
+           function="Advanced.ClickGLTFUpload" />
+        </menu_item_call>
+      </menu>
+      <menu
+         create_jump_keys="true"
+         label="Video"
+         name="Video"
+         tear_off="true">
+        <menu_item_call
+         label="1080x1920"
+         name="1080x1920">
+          <menu_item_call.on_click
+           function="Advanced.ClickResizeWindow"
+            parameter="1080x1920"/>
+        </menu_item_call>
+        <menu_item_call
+         label="1920x1080"
+         name="1920x1080">
+          <menu_item_call.on_click
+           function="Advanced.ClickResizeWindow"
+            parameter="1920x1080"/>
+        </menu_item_call>
+        <menu_item_call
+         label="1280x720"
+         name="1280x720">
+          <menu_item_call.on_click
+           function="Advanced.ClickResizeWindow"
+            parameter="1280x720"/>
+          </menu_item_call>
+        <menu_item_call
+          label="720x1280"
+         name="720x1280">
+          <menu_item_call.on_click
+           function="Advanced.ClickResizeWindow"
+            parameter="720x1280"/>
+          </menu_item_call>
+      </menu>
         <menu
          create_jump_keys="true"
          label="Render Tests"
@@ -2875,12 +2939,6 @@ function="World.EnvPreset"
             <menu_item_call.on_click
              function="Advanced.ClickHDRIPreview" />
           </menu_item_call>
-          <menu_item_call
-           label="GLTF Scene Preview"
-           name="GLTF Scene Preview">
-            <menu_item_call.on_click
-             function="Advanced.ClickGLTFScenePreview" />
-          </menu_item_call>
         </menu>
       <menu
         create_jump_keys="true"
@@ -3901,6 +3959,16 @@ function="World.EnvPreset"
                      function="ToggleControl"
                      parameter="AllowSelectAvatar" />
                 </menu_item_check>
+                <menu_item_check
+                 label="Render Only Friends"
+                 name="Render Only Friends">
+                    <menu_item_check.on_check
+                     function="CheckControl"
+                     parameter="RenderAvatarFriendsOnly" />
+                    <menu_item_check.on_click
+                     function="ToggleControl"
+                     parameter="RenderAvatarFriendsOnly" />
+                </menu_item_check>
             </menu>
             <menu
              create_jump_keys="true"
@@ -3998,6 +4066,16 @@ function="World.EnvPreset"
                  function="Advanced.ToggleDebugCharacterVis" />
             </menu_item_check>
             <menu_item_check
+             label="Debug Character Rez State"
+             name="Debug Character Rez State">
+                <menu_item_check.on_check
+                 function="CheckControl"
+                 parameter="NameTagDebugAVRezState" />
+                <menu_item_check.on_click
+                 function="ToggleControl"
+                 parameter="NameTagDebugAVRezState" />
+            </menu_item_check>
+            <menu_item_check
              label="Show Collision Skeleton"
              name="Show Collision Skeleton">
                 <menu_item_check.on_check
diff --git a/indra/newview/skins/default/xui/en/notifications.xml b/indra/newview/skins/default/xui/en/notifications.xml
index 0ccb980803..73b001a526 100644
--- a/indra/newview/skins/default/xui/en/notifications.xml
+++ b/indra/newview/skins/default/xui/en/notifications.xml
@@ -6267,7 +6267,7 @@ Are you sure you want to delete them?
      notext="Cancel"
      yestext="OK"/>
   </notification>
-    
+
   <notification
    icon="alertmodal.tga"
    name="DeleteWornItems"
@@ -6342,6 +6342,17 @@ You must replace those layers before deleting them.
      yestext="OK"/>
   </notification>
 
+    <notification
+     icon="alertmodal.tga"
+     name="ThumbnailSelectionTooLarge"
+     type="alertmodal">
+        <unique/>
+        You can only modify up to 50 thumbnails at a time.
+        <usetemplate
+         name="okbutton"
+         yestext="OK"/>
+    </notification>
+
   <notification
      icon="alertmodal.tga"
      name="ConfirmUnlink"
@@ -8837,10 +8848,10 @@ New Voice Morphs are available!
     persist="true"
     type="alertmodal">
 Voice Morphs are not supported by this viewer.
+For more information about other voice morph tools, see [[FAQ_URL] this article].
     <usetemplate
-        notext="Cancel"
-        name="okcancelbuttons"
-        yestext="Disable Voice Morphing"/>
+        name="okignore"
+        yestext="OK"/>
     <tag>voice</tag>
   </notification>
 
@@ -12464,7 +12475,7 @@ are wearing now.
 
   <notification
    icon="alertmodal.tga"
-   name="GLTFPreviewSelection"
+   name="GLTFOpenSelection"
    type="alert">
     You must select an object to act as a handle to the GLTF asset you are previewing.
     <tag>fail</tag>
@@ -12473,4 +12484,59 @@ are wearing now.
       yestext="OK"/>
   </notification>
 
+  <notification
+   icon="alertmodal.tga"
+   name="GLTFLoadFailed"
+   type="alert">
+    Failed to load GLTF file.  See log for details.
+    <tag>fail</tag>
+    <usetemplate
+      name="okbutton"
+      yestext="OK"/>
+  </notification>
+
+  <notification
+   icon="alertmodal.tga"
+   name="GLTFSaveFailed"
+   type="alert">
+    Failed to save GLTF file.  See log for details.
+    <tag>fail</tag>
+    <usetemplate
+      name="okbutton"
+      yestext="OK"/>
+  </notification>
+
+  <notification
+   icon="alertmodal.tga"
+   name="GLTFSaveSelection"
+   type="alert">
+    You must select an object that has a GLTF asset associated with it.
+    <tag>fail</tag>
+    <usetemplate
+      name="okbutton"
+      yestext="OK"/>
+  </notification>
+
+  <notification
+   icon="alertmodal.tga"
+   name="GLTFUploadSelection"
+   type="alert">
+    You must select an object that has local-only GLTF asset associated with it.
+    <tag>fail</tag>
+    <usetemplate
+      name="okbutton"
+      yestext="OK"/>
+  </notification>
+
+  <notification
+ icon="alertmodal.tga"
+ name="GLTFUploadInProgress"
+ type="alert">
+    Upload is currently in progress.  Please try again later.
+    <tag>fail</tag>
+    <usetemplate
+      name="okbutton"
+      yestext="OK"/>
+  </notification>
+
 </notifications>
diff --git a/indra/newview/skins/default/xui/en/panel_performance_nearby.xml b/indra/newview/skins/default/xui/en/panel_performance_nearby.xml
index ca961747c4..4409feb23a 100644
--- a/indra/newview/skins/default/xui/en/panel_performance_nearby.xml
+++ b/indra/newview/skins/default/xui/en/panel_performance_nearby.xml
@@ -135,18 +135,41 @@
     name="exceptions_btn"
     width="100">
   </button>
-  <check_box
-    control_name="AlwaysRenderFriends"
+
+  <text
+    type="string"
+    length="1"
+    follows="left|top"
     height="16"
-    initial_value="true"
-    label="Always display friends in full detail"
-    label_text.text_color="White"
     layout="topleft"
-    name="display_friends"
-    top_pad="3"
     left="18"
-    width="256">
-  </check_box>
+    top_pad="3"
+    name="AvatarComplexityModeLabel"
+    text_readonly_color="LabelDisabledColor"
+    width="128">
+      Avatar display:
+  </text>
+  <combo_box
+   control_name="RenderAvatarComplexityMode"
+   height="23"
+   layout="topleft"
+   left_delta="130"
+   top_delta="-4"
+   name="AvatarComplexityMode"
+   width="150">
+       <combo_box.item
+        label="Limit by complexity"
+        name="0"
+        value="0"/>
+       <combo_box.item
+        label="Always show friends"
+        name="1"
+        value="1"/>
+       <combo_box.item
+        label="Only show friends"
+        name="2"
+        value="2"/>
+  </combo_box>
   <view_border
     bevel_style="in"
     height="0"
diff --git a/indra/newview/skins/default/xui/en/panel_preferences_graphics1.xml b/indra/newview/skins/default/xui/en/panel_preferences_graphics1.xml
index a19c9dd288..cb3e0e4b6a 100644
--- a/indra/newview/skins/default/xui/en/panel_preferences_graphics1.xml
+++ b/indra/newview/skins/default/xui/en/panel_preferences_graphics1.xml
@@ -276,6 +276,41 @@
     <button.commit_callback
       function="Pref.AutoAdjustments"/>
   </button>
+
+    <text
+      type="string"
+      length="1"
+      follows="left|top"
+      height="16"
+      layout="topleft"
+      left="30"
+      top_delta="42"
+      width="128"
+      name="AvatarComplexityModeLabel"
+      text_readonly_color="LabelDisabledColor">
+        Avatar display:
+    </text>
+    <combo_box
+     control_name="RenderAvatarComplexityMode"
+     height="23"
+     layout="topleft"
+     left_delta="130"
+     top_delta="-4"
+     name="AvatarComplexityMode"
+     width="150">
+        <combo_box.item
+         label="Limit by complexity"
+         name="0"
+         value="0"/>
+        <combo_box.item
+         label="Always show friends"
+         name="1"
+         value="1"/>
+        <combo_box.item
+         label="Only show friends"
+         name="2"
+         value="2"/>
+    </combo_box>
   
   <slider
     control_name="IndirectMaxComplexity"
@@ -284,7 +319,7 @@
     height="16"
     initial_value="101"
     increment="1"
-    label="Avatar Maximum Complexity:"
+    label="Avatar maximum complexity:"
     label_width="165"
     layout="topleft"
     left="30"
@@ -292,7 +327,7 @@
     max_val="101"
     name="IndirectMaxComplexity"
     show_text="false"
-    top_delta="40"
+    top_delta="28"
     width="300">
     <slider.commit_callback
       function="Pref.UpdateIndirectMaxComplexity"
@@ -311,32 +346,7 @@
     width="65">
        0
   </text>
-<text
-type="string"
-length="1"
-follows="left|top"
-height="16"
-layout="topleft"
-left_delta="68"
-name="IndirectMaxComplexityLink"
-mouse_opaque="false"
-top_delta="0"
-width="120">
-[https://community.secondlife.com/t5/Featured-News/Why-are-all-these-people-made-of-colored-jelly/ba-p/3031255 What's this?]
-</text>
 
-
-  <check_box
-    control_name="AlwaysRenderFriends"
-    height="16"
-    initial_value="true"
-    label="Always Render Friends"
-    layout="topleft"
-    left="30"
-    name="AlwaysRenderFriends"
-    top_delta="24"
-    width="256">
-  </check_box>
   <button
     height="23"
     label="Exceptions..."
diff --git a/indra/newview/skins/default/xui/en/panel_region_terrain_texture_transform.xml b/indra/newview/skins/default/xui/en/panel_region_terrain_texture_transform.xml
new file mode 100644
index 0000000000..9a90700056
--- /dev/null
+++ b/indra/newview/skins/default/xui/en/panel_region_terrain_texture_transform.xml
@@ -0,0 +1,260 @@
+<?xml version="1.0" encoding="utf-8" standalone="yes"?>
+<panel
+ border="true"
+ follows="top|left"
+ height="460"
+ label="Terrain"
+ layout="topleft"
+ left="0"
+ name="Terrain"
+ top="320"
+ width="480">
+    <text
+     follows="left|top"
+     font="SansSerif"
+     height="20"
+     layout="topleft"
+     left="10"
+     name="region_text_lbl"
+     top="10"
+     width="100">
+        Region:
+    </text>
+    <text
+     follows="left|top"
+     font="SansSerif"
+     height="20"
+     layout="topleft"
+     left_delta="50"
+     name="region_text"
+     top_delta="0"
+     width="400">
+        unknown
+    </text>
+    <text
+     type="string"
+     length="1"
+     halign="left"
+     valign="center"
+     follows="left|top"
+     height="20"
+     layout="topleft"
+     name="detail_texture_text"
+     left="10"
+     top="35"
+     width="170">
+        Terrain Textures
+    </text>
+    <text
+     type="string"
+     length="1"
+     halign="left"
+     valign="center"
+     follows="left|top"
+     height="20"
+     layout="topleft"
+     name="detail_material_text"
+     left="10"
+     top="35"
+     width="170">
+        Terrain Materials
+    </text>
+    <check_box
+     height="20"
+     halign="left"
+     valign="center"
+     follows="left|top"
+     layout="topleft"
+     top_delta="1"
+     left_delta="180"
+     label="PBR Metallic Roughness"
+     name="terrain_material_type"
+     tool_tip="If checked, use PBR Metallic Roughness materials for terrain. Otherwise, use textures."
+     left_pad="2"
+     width="200" />
+    <texture_picker
+     follows="left|top"
+     height="121"
+     layout="topleft"
+     left="10"
+     name="texture_detail_0"
+     default_image_id="0bc58228-74a0-7e83-89bc-5c23464bcec5"
+     top_delta="30"
+     width="100" />
+    <texture_picker
+     follows="top"
+     height="121"
+     layout="topleft"
+     left_pad="10"
+     name="texture_detail_1"
+     default_image_id="63338ede-0037-c4fd-855b-015d77112fc8"
+     top_delta="0"
+     width="100" />
+    <texture_picker
+     follows="left|top"
+     height="121"
+     layout="topleft"
+     left_pad="10"
+     name="texture_detail_2"
+     default_image_id="303cd381-8560-7579-23f1-f0a880799740"
+     top_delta="0"
+     width="100" />
+    <texture_picker
+     follows="left|top"
+     height="121"
+     layout="topleft"
+     left_pad="10"
+     name="texture_detail_3"
+     default_image_id="53a2f406-4895-1d13-d541-d2e3b86bc19c"
+     top_delta="0"
+     width="100" />
+    <texture_picker
+     visible="false"
+     follows="left|top"
+     height="121"
+     layout="topleft"
+     left="10"
+     name="material_detail_0"
+     pick_type="material"
+     default_image_id="968cbad0-4dad-d64e-71b5-72bf13ad051a"
+     top_delta="0"
+     width="100" />
+    <texture_picker
+     visible="false"
+     follows="left|top"
+     height="121"
+     layout="topleft"
+     left_pad="10"
+     name="material_detail_1"
+     pick_type="material"
+     default_image_id="968cbad0-4dad-d64e-71b5-72bf13ad051a"
+     top_delta="0"
+     width="100" />
+    <texture_picker
+     visible="false"
+     follows="left|top"
+     height="121"
+     layout="topleft"
+     left_pad="10"
+     name="material_detail_2"
+     pick_type="material"
+     default_image_id="968cbad0-4dad-d64e-71b5-72bf13ad051a"
+     top_delta="0"
+     width="100" />
+    <texture_picker
+     visible="false"
+     follows="left|top"
+     height="121"
+     layout="topleft"
+     left_pad="10"
+     name="material_detail_3"
+     pick_type="material"
+     default_image_id="968cbad0-4dad-d64e-71b5-72bf13ad051a"
+     top_delta="0"
+     width="100" />
+    <text
+     type="string"
+     length="1"
+     follows="left|top"
+     height="20"
+     layout="topleft"
+     left="10"
+     name="height_text_lbl"
+     top_delta="104"
+     width="65">
+        1 (Low)
+    </text>
+    <text
+     type="string"
+     length="1"
+     follows="left|top"
+     height="20"
+     layout="topleft"
+     left_pad="45"
+     name="height_text_lbl2"
+     top_delta="0"
+     width="100">
+        2
+    </text>
+    <text
+     type="string"
+     length="1"
+     follows="left|top"
+     height="20"
+     layout="topleft"
+     left_pad="10"
+     name="height_text_lbl3"
+     top_delta="0"
+     width="100">
+        3
+    </text>
+    <text
+     type="string"
+     length="1"
+     follows="left|top"
+     height="20"
+     layout="topleft"
+     left_pad="10"
+     name="height_text_lbl4"
+     top_delta="0"
+     width="100">
+        4 (High)
+    </text>
+    <layout_stack name="terrain_features_stack"
+      width="477"
+      height="230"
+      follows="all"
+      animate="false"
+      left="0"
+      top_delta="22"
+      orientation="vertical">
+      <layout_panel name="frame_settings_terrain"
+        auto_resize="true"
+        user_resize="false"
+        height="230"
+        width="467"
+        min_height="0"
+        visible="true">
+        <tab_container
+          follows="all"
+          halign="left"
+          height="230"
+          visible="true"
+          layout="topleft"
+          left="0"
+          name="terrain_tabs"
+          tab_position="top"
+          tab_width="110"
+          tab_padding_right="3"
+          top_pad="0"
+          width="700">
+          <panel
+            border="true"
+            filename="panel_settings_terrain_elevation.xml"
+            label="Elevation"
+            layout="topleft"
+            left_delta="0"
+            top_pad="5"
+            name="terrain_elevation_panel" />
+          <panel
+            border="true"
+            filename="panel_settings_terrain_transform.xml"
+            label="Transforms"
+            layout="topleft"
+            left_delta="0"
+            top_pad="5"
+            name="terrain_transform_panel" />
+        </tab_container>
+      </layout_panel>
+    </layout_stack>
+    <button
+     enabled="true"
+     follows="left|top"
+     height="20"
+     label="Apply"
+     layout="topleft"
+     left="351"
+     name="apply_btn"
+     top_delta="310"
+     width="100" />
+</panel>
diff --git a/indra/newview/skins/default/xui/en/panel_settings_sky_atmos.xml b/indra/newview/skins/default/xui/en/panel_settings_sky_atmos.xml
index 59ee0c6ad5..a29cdb5b41 100644
--- a/indra/newview/skins/default/xui/en/panel_settings_sky_atmos.xml
+++ b/indra/newview/skins/default/xui/en/panel_settings_sky_atmos.xml
@@ -9,7 +9,7 @@
         top="0">
   <string name="hdr_string">HDR Scale:</string>
   <string name="brightness_string">Brightness:</string>
-  <string name="hdr_tooltip">Intensity of lightning effects such as realistically bright skies and dynamic exposure. 1.0 is the default, 0 is off, values between 0 and 1 are mixing Ambient with HDR.</string>
+  <string name="hdr_tooltip">Intensity of lighting effects such as realistically bright skies and dynamic exposure. 1.0 is the default, 0 is off, values between 0 and 1 are mixing Ambient with HDR.</string>
     <layout_stack
             name="main_ls"
             follows="all"
@@ -318,7 +318,7 @@
                             layout="topleft"
                             left_delta="-5"
                             top_delta="25"
-                            tooltip="Irradiance control.  When not zero, enables HDR lighting model."
+                            tool_tip="Irradiance control. When not zero, enables HDR lighting model."
                             width="200">
                     Reflection Probe Ambiance (HDR):
                   </text>
diff --git a/indra/newview/skins/default/xui/en/panel_settings_terrain_elevation.xml b/indra/newview/skins/default/xui/en/panel_settings_terrain_elevation.xml
new file mode 100644
index 0000000000..89443290ce
--- /dev/null
+++ b/indra/newview/skins/default/xui/en/panel_settings_terrain_elevation.xml
@@ -0,0 +1,307 @@
+<?xml version="1.0" encoding="utf-8" standalone="yes"?>
+<panel
+  border="true"
+  follows="all"
+  label="Elevation"
+  layout="topleft"
+  left="0"
+  name="panel_settings_terrain_elevation"
+  top="0">
+  <spinner
+   follows="left|top"
+   height="20"
+   label="Water Height"
+   label_width="120"
+   layout="topleft"
+   left="15"
+   max_val="100"
+   name="water_height_spin"
+   top_delta="18"
+   width="180" />
+  <spinner
+   follows="left|top"
+   height="20"
+   increment="0.2"
+   label="Terrain Raise Limit"
+   label_width="120"
+   layout="topleft"
+   left="240"
+   max_val="100"
+   name="terrain_raise_spin"
+   top_delta="0"
+   width="180" />
+  <spinner
+   follows="left|top"
+   height="20"
+   increment="0.2"
+   label="Terrain Lower Limit"
+   label_width="120"
+   layout="topleft"
+   left="240"
+   max_val="0"
+   min_val="-100"
+   name="terrain_lower_spin"
+   top_delta="20"
+   width="180" />
+  <view_border
+   bevel_style="none"
+   follows="top|left"
+   height="60"
+   layout="topleft"
+   left="8"
+   top_delta="-30"
+   width="460" />
+  <text
+   type="string"
+   length="1"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   left="10"
+   name="height_text_lbl5"
+   top_delta="74"
+   width="300">
+      Texture Elevation Ranges
+  </text>
+  <text
+   visible="false"
+   type="string"
+   length="1"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   left="10"
+   name="height_text_lbl5_material"
+   top_delta="0"
+   width="300">
+      Material Elevation Ranges
+  </text>
+  <text
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   left="10"
+   name="height_text_lbl10"
+   top_delta="30"
+   width="200"
+   word_wrap="true">
+    These values represent the blend range for the textures above.
+  </text>
+  <text
+   visible="false"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   left="10"
+   name="height_text_lbl10_material"
+   top_delta="0"
+   width="200"
+   word_wrap="true">
+    These values represent the blend range for the materials above.
+  </text>
+  <text
+     follows="left|top"
+     height="60"
+     layout="topleft"
+     left_delta="0"
+     name="height_text_lbl11"
+     top_delta="32"
+     width="200"
+     word_wrap="true">
+      Measured in meters, the LOW value is the MAXIMUM height of Texture #1, and the HIGH value is the MINIMUM height of Texture #4.
+  </text>
+  <text
+     visible="false"
+     follows="left|top"
+     height="60"
+     layout="topleft"
+     left_delta="0"
+     name="height_text_lbl11_material"
+     top_delta="0"
+     width="200"
+     word_wrap="true">
+      Measured in meters, the LOW value is the MAXIMUM height of Material #1, and the HIGH value is the MINIMUM height of Material #4.
+  </text>
+  <text
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   left="270"
+   name="height_text_lbl6"
+   top_delta="-62"
+   width="100">
+      Northwest
+  </text>
+  <text
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   left_pad="10"
+   name="height_text_lbl7"
+   top_delta="0"
+   width="100">
+      Northeast
+  </text>
+<!--  northwest low-->
+   <spinner
+    follows="left|top"
+    height="20"
+    increment="0.5"
+    label="Low"
+    label_width="37"
+    layout="topleft"
+    left="230"
+    max_val="500"
+    min_val="-500"
+    name="height_start_spin_1"
+    top_delta="15"
+    width="100" />
+<!--    northeast low-->
+    <spinner
+     follows="left|top"
+     height="20"
+     increment="0.5"
+     label="Low"
+     label_width="37"
+     layout="topleft"
+     left_pad="10"
+     max_val="500"
+     min_val="-500"
+     name="height_start_spin_3"
+     top_delta="0"
+     width="100" />
+<!--  northwest high-->
+   <spinner
+    follows="left|top"
+    height="20"
+    increment="0.5"
+    label="High"
+    label_width="37"
+    layout="topleft"
+    left="230"
+    max_val="500"
+    min_val="-500"
+    name="height_range_spin_1"
+    top_delta="20"
+    width="100" />
+<!--  northeast high-->
+  <spinner
+     follows="left|top"
+     height="20"
+     increment="0.5"
+     label="High"
+     label_width="37"
+     layout="topleft"
+     left_pad="10"
+     max_val="500"
+     min_val="-500"
+     name="height_range_spin_3"
+     top_delta="0"
+     width="100" />
+  <text
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   left="270"
+   name="height_text_lbl8"
+   top_pad="10"
+   width="100">
+      Southwest
+  </text>
+  <text
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   left_pad="10"
+   name="height_text_lbl9"
+   top_delta="0"
+   width="100">
+      Southeast
+  </text>
+<!--  southwest low-->
+  <spinner
+   follows="left|top"
+   height="20"
+   increment="0.5"
+   label="Low"
+   label_width="37"
+   layout="topleft"
+   left="230"
+   max_val="500"
+   min_val="-500"
+   name="height_start_spin_0"
+   top_delta="15"
+   width="100" />
+<!--  southeast low-->
+  <spinner
+   follows="left|top"
+   height="20"
+   increment="0.5"
+   label="Low"
+   label_width="37"
+   layout="topleft"
+   left_pad="10"
+   max_val="500"
+   min_val="-500"
+   name="height_start_spin_2"
+   top_delta="0"
+   width="100" />
+<!--southwest high-->
+  <spinner
+   follows="left|top"
+   height="20"
+   increment="0.5"
+   label="High"
+   label_width="37"
+   layout="topleft"
+   left="230"
+   max_val="500"
+   min_val="-500"
+   name="height_range_spin_0"
+   top_delta="20"
+   width="100" />
+<!--  southeast high-->
+  <spinner
+   follows="left|top"
+   height="20"
+   increment="0.5"
+   label="High"
+   label_width="37"
+   layout="topleft"
+   left_pad="10"
+   max_val="500"
+   min_val="-500"
+   name="height_range_spin_2"
+   top_delta="0"
+   width="100" />
+<!-- Terrain Download/Upload/Bake buttons -->
+  <button
+   follows="left|top"
+   height="20"
+   label="Download RAW terrain..."
+   layout="topleft"
+   left="10"
+   name="download_raw_btn"
+   tool_tip="Available only to estate owners, not managers"
+   top_delta="40"
+   width="160" />
+  <button
+   follows="left|top"
+   height="20"
+   label="Upload RAW terrain..."
+   layout="topleft"
+   left_pad="10"
+   top_delta="0"
+   name="upload_raw_btn"
+   tool_tip="Available only to estate owners, not managers"
+   width="160" />
+  <button
+   follows="left|top"
+   height="20"
+   label="Bake Terrain"
+   layout="topleft"
+   left_pad="10"
+   name="bake_terrain_btn"
+   tool_tip="Set current terrain as mid-point for raise/lower limits"
+   width="100" />
+</panel>
diff --git a/indra/newview/skins/default/xui/en/panel_settings_terrain_transform.xml b/indra/newview/skins/default/xui/en/panel_settings_terrain_transform.xml
new file mode 100644
index 0000000000..0bf0d8cffc
--- /dev/null
+++ b/indra/newview/skins/default/xui/en/panel_settings_terrain_transform.xml
@@ -0,0 +1,421 @@
+<?xml version="1.0" encoding="utf-8" standalone="yes"?>
+<panel
+  border="true"
+  follows="all"
+  label="Samping"
+  layout="topleft"
+  left="0"
+  name="panel_settings_terrain_transform"
+  top="0">
+  <text
+   type="string"
+   length="1"
+   halign="center"
+   valign="center"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   name="terrain0_label"
+   left="48"
+   top_delta="0"
+   width="62">
+      1
+  </text>
+  <text
+   type="string"
+   length="1"
+   halign="center"
+   valign="center"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   name="terrain1_label"
+   left_delta="110"
+   top_delta="0"
+   width="62">
+      2
+  </text>
+  <text
+   type="string"
+   length="1"
+   halign="center"
+   valign="center"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   name="terrain2_label"
+   left_delta="110"
+   top_delta="0"
+   width="62">
+      3
+  </text>
+  <text
+   type="string"
+   length="1"
+   halign="center"
+   valign="center"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   name="terrain3_label"
+   left_delta="110"
+   top_delta="0"
+   width="62">
+      4
+  </text>
+  <text
+   type="string"
+   length="1"
+   halign="left"
+   valign="center"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   name="terrain0ScaleU_label"
+   left="10"
+   top_pad="0"
+   width="170">
+      Scale u
+  </text>
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="1"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left="46"
+   min_val="-100"
+   max_val="100"
+   name="terrain0ScaleU"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="1"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-100"
+   max_val="100"
+   name="terrain1ScaleU"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="1"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-100"
+   max_val="100"
+   name="terrain2ScaleU"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="1"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-100"
+   max_val="100"
+   name="terrain3ScaleU"
+   width="64" />
+  <view_border
+   bevel_style="none"
+   follows="top|left"
+   height="0"
+   layout="topleft"
+   left="8"
+   top_pad="8"
+   name="terrainScaleU_horizontal"
+   width="432" />
+  <text
+   type="string"
+   length="1"
+   halign="left"
+   valign="center"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   name="terrain0ScaleV_label"
+   left="10"
+   top_pad="0"
+   width="170">
+      Scale v
+  </text>
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="1"
+   label="Scale v"
+   label_width="0"
+   layout="topleft"
+   left="46"
+   min_val="-100"
+   max_val="100"
+   name="terrain0ScaleV"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="1"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-100"
+   max_val="100"
+   name="terrain1ScaleV"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="1"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-100"
+   max_val="100"
+   name="terrain2ScaleV"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="1"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-100"
+   max_val="100"
+   name="terrain3ScaleV"
+   width="64" />
+  <view_border
+   bevel_style="none"
+   follows="top|left"
+   height="0"
+   layout="topleft"
+   left="8"
+   top_pad="8"
+   name="terrainScaleV_horizontal"
+   width="432" />
+  <text
+   type="string"
+   length="1"
+   halign="left"
+   valign="center"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   name="terrain0Rotation_label"
+   left="10"
+   top_pad="0"
+   width="170">
+      Rotation
+  </text>
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Rotation"
+   label_width="0"
+   layout="topleft"
+   left="46"
+   min_val="-360"
+   max_val="360"
+   name="terrain0Rotation"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-360"
+   max_val="360"
+   name="terrain1Rotation"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-360"
+   max_val="360"
+   name="terrain2Rotation"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-360"
+   max_val="360"
+   name="terrain3Rotation"
+   width="64" />
+  <view_border
+   bevel_style="none"
+   follows="top|left"
+   height="0"
+   layout="topleft"
+   left="8"
+   top_pad="8"
+   name="terrainRotation_horizontal"
+   width="432" />
+  <text
+   type="string"
+   length="1"
+   halign="left"
+   valign="center"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   name="terrain0OffsetU_label"
+   left="10"
+   top_pad="0"
+   width="170">
+      Offset y
+  </text>
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Offset u"
+   label_width="0"
+   layout="topleft"
+   left="46"
+   min_val="-999"
+   max_val="999"
+   name="terrain0OffsetU"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-999"
+   max_val="999"
+   name="terrain1OffsetU"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-999"
+   max_val="999"
+   name="terrain2OffsetU"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-999"
+   max_val="999"
+   name="terrain3OffsetU"
+   width="64" />
+  <view_border
+   bevel_style="none"
+   follows="top|left"
+   height="0"
+   layout="topleft"
+   left="8"
+   top_pad="8"
+   name="terrainOffsetU_horizontal"
+   width="432" />
+  <text
+   type="string"
+   length="1"
+   halign="left"
+   valign="center"
+   follows="left|top"
+   height="20"
+   layout="topleft"
+   name="terrain0OffsetV_label"
+   left="10"
+   top_pad="0"
+   width="170">
+      Offset v
+  </text>
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Offset v"
+   label_width="0"
+   layout="topleft"
+   left="46"
+   min_val="-999"
+   max_val="999"
+   name="terrain0OffsetV"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-999"
+   max_val="999"
+   name="terrain1OffsetV"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-999"
+   max_val="999"
+   name="terrain2OffsetV"
+   width="64" />
+  <spinner
+   follows="left|top"
+   height="19"
+   initial_value="0"
+   label="Scale u"
+   label_width="0"
+   layout="topleft"
+   left_delta="110"
+   min_val="-999"
+   max_val="999"
+   name="terrain3OffsetV"
+   width="64" />
+  <view_border
+   bevel_style="none"
+   follows="top|left"
+   height="0"
+   layout="topleft"
+   left="8"
+   top_pad="8"
+   name="terrainOffsetV_horizontal"
+   width="432" />
+</panel>
diff --git a/indra/newview/skins/default/xui/en/strings.xml b/indra/newview/skins/default/xui/en/strings.xml
index daa49eaa2c..232586636b 100644
--- a/indra/newview/skins/default/xui/en/strings.xml
+++ b/indra/newview/skins/default/xui/en/strings.xml
@@ -3820,6 +3820,7 @@ Please reinstall viewer from  https://secondlife.com/support/downloads/ and cont
 
   <string name="voice_morphing_url">https://secondlife.com/destination/voice-island</string>
   <string name="premium_voice_morphing_url">https://secondlife.com/destination/voice-morphing-premium</string>
+  <string name="no_voice_morphing_faq_url">https://lindenlab.freshdesk.com/support/solutions/articles/31000173560-webrtc-update-for-voice-chat-faq/</string>
 
   <string name="lindenhomes_get_home_url">https://secondlife.com/land/lindenhomes/member.php</string>
   <string name="lindenhomes_my_home_url">https://land.secondlife.com/en-Us/lindenhomes/my-home.php</string>
diff --git a/indra/newview/skins/default/xui/es/floater_texture_fetch_debugger.xml b/indra/newview/skins/default/xui/es/floater_texture_fetch_debugger.xml
deleted file mode 100644
index 59aaf7f74a..0000000000
--- a/indra/newview/skins/default/xui/es/floater_texture_fetch_debugger.xml
+++ /dev/null
@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="TexFetchDebugger" title="Depurador de obtención de texturas">
-	<text name="total_num_fetched_label">
-		1, Número total de texturas obtenidas: [NUM]
-	</text>
-	<text name="total_num_fetching_requests_label">
-		2, Número total de solicitudes de obtención: [NUM]
-	</text>
-	<text name="total_num_cache_hits_label">
-		3, Número total de aciertos de caché: [NUM]
-	</text>
-	<text name="total_num_visible_tex_label">
-		4, Número total de texturas visibles: [NUM]
-	</text>
-	<text name="total_num_visible_tex_fetch_req_label">
-		5, Número total de solicitudes de obtención de texturas visibles: [NUM]
-	</text>
-	<text name="total_fetched_data_label">
-		6, Número total de datos obtenidos: [SIZE1] KB, Datos descodificados: [SIZE2] KB, [PIXEL] MPíxeles
-	</text>
-	<text name="total_fetched_vis_data_label">
-		7, Número total de datos visibles: [SIZE1] KB, Datos descodificados: [SIZE2] KB
-	</text>
-	<text name="total_fetched_rendered_data_label">
-		8, Número total de datos representados: [SIZE1] KB, Datos descodificados: [SIZE2] KB, [PIXEL] MPíxeles
-	</text>
-	<text name="total_time_cache_read_label">
-		9, Tiempo total en lecturas de caché: [TIME] segundos
-	</text>
-	<text name="total_time_cache_write_label">
-		10, Tiempo total en escrituras de caché: [TIME] segundos
-	</text>
-	<text name="total_time_decode_label">
-		11, Tiempo total en descodificaciones: [TIME] segundos
-	</text>
-	<text name="total_time_gl_label">
-		12, Tiempo total en la creación de texturas gl: [TIME] segundos
-	</text>
-	<text name="total_time_http_label">
-		13, Tiempo total en obtención de HTTP: [TIME] segundos
-	</text>
-	<text name="total_time_fetch_label">
-		14, Tiempo total en obtención completa: [TIME] segundos
-	</text>
-	<text name="total_time_refetch_vis_cache_label">
-		15, Volviendo a obtener visibles de la caché, Tiempo: [TIME] segundos, Obtenidos: [SIZE] KB, [PIXEL] MPíxeles
-	</text>
-	<text name="total_time_refetch_all_cache_label">
-		16, Volviendo a obtener todas las texturas de caché, Tiempo: [TIME] segundos, Obtenidos: [SIZE] KB, [PIXEL] MPíxeles
-	</text>
-	<text name="total_time_refetch_vis_http_label">
-		17, Volviendo a obtener visibles de HTTP, Tiempo: [TIME] segundos, Obtenidos: [SIZE] KB, [PIXEL] MPíxeles
-	</text>
-	<text name="total_time_refetch_all_http_label">
-		18, Volviendo a obtener todas las texturas de HTTP, Tiempo: [TIME] segundos, Obtenidos: [SIZE] KB, [PIXEL] MPíxeles
-	</text>
-	<spinner label="19, Proporción de texeles/píxeles:" name="texel_pixel_ratio"/>
-	<text name="texture_source_label">
-		20, Fuente de texturas:
-	</text>
-	<radio_group name="texture_source">
-		<radio_item label="Caché + HTTP" name="0"/>
-		<radio_item label="Solo HTTP" name="1"/>
-	</radio_group>
-	<button label="Iniciar" name="start_btn"/>
-	<button label="Restablecer" name="clear_btn"/>
-	<button label="Cerrar" name="close_btn"/>
-	<button label="Lectura de caché" name="cacheread_btn"/>
-	<button label="Escritura de caché" name="cachewrite_btn"/>
-	<button label="HTTP" name="http_btn"/>
-	<button label="Descodificar" name="decode_btn"/>
-	<button label="Textura GL" name="gl_btn"/>
-	<button label="Volver a obtener caché de vis." name="refetchviscache_btn"/>
-	<button label="Volver a obtener toda la caché" name="refetchallcache_btn"/>
-	<button label="Volver a obtener HTTP de vis." name="refetchvishttp_btn"/>
-	<button label="Volver a obtener todo el HTTP" name="refetchallhttp_btn"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/fr/floater_texture_fetch_debugger.xml b/indra/newview/skins/default/xui/fr/floater_texture_fetch_debugger.xml
deleted file mode 100644
index caae15ea17..0000000000
--- a/indra/newview/skins/default/xui/fr/floater_texture_fetch_debugger.xml
+++ /dev/null
@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="TexFetchDebugger" title="Outil de débogage de la récupération des textures">
-	<text name="total_num_fetched_label">
-		1, nombre total de textures récupérées : [NUM]
-	</text>
-	<text name="total_num_fetching_requests_label">
-		2, nombre total de demandes de récupération : [NUM]
-	</text>
-	<text name="total_num_cache_hits_label">
-		3, nombre total de présences dans le cache : [NUM]
-	</text>
-	<text name="total_num_visible_tex_label">
-		4, nombre total de textures visibles : [NUM]
-	</text>
-	<text name="total_num_visible_tex_fetch_req_label">
-		5, nombre total de demandes de récupération de textures visibles : [NUM]
-	</text>
-	<text name="total_fetched_data_label">
-		6, nombre total de données récupérées : [SIZE1] Ko, données décodées : [SIZE2] Ko, [PIXEL] Mpixels
-	</text>
-	<text name="total_fetched_vis_data_label">
-		7, nombre total de données visibles : [SIZE1] Ko, données décodées : [SIZE2] Ko
-	</text>
-	<text name="total_fetched_rendered_data_label">
-		8, nombre total de données rendues : [SIZE1] Ko, données décodées : [SIZE2] Ko, [PIXEL] Mpixels
-	</text>
-	<text name="total_time_cache_read_label">
-		9, durée totale des lectures du cache : [TIME] secondes
-	</text>
-	<text name="total_time_cache_write_label">
-		10, durée totale des écritures du cache : [TIME] secondes
-	</text>
-	<text name="total_time_decode_label">
-		11, durée totale des décodages : [TIME] secondes
-	</text>
-	<text name="total_time_gl_label">
-		12, durée totale de la création de textures GL : [TIME] secondes
-	</text>
-	<text name="total_time_http_label">
-		13, durée totale de la récupération HTTP : [TIME] secondes
-	</text>
-	<text name="total_time_fetch_label">
-		14, durée totale de la récupération intégrale : [TIME] secondes
-	</text>
-	<text name="total_time_refetch_vis_cache_label">
-		15, nouvelle récupération des données visibles du cache, Durée : [TIME] secondes, Récupéré : [SIZE] Ko, [PIXEL] Mpixels
-	</text>
-	<text name="total_time_refetch_all_cache_label">
-		16, nouvelle récupération de toutes les textures du cache, Durée : [TIME] secondes, Récupéré : [SIZE] Ko, [PIXEL] Mpixels
-	</text>
-	<text name="total_time_refetch_vis_http_label">
-		17, nouvelle récupération des données visibles de la requête HTTP, Durée : [TIME] secondes, Récupéré : [SIZE] Ko, [PIXEL] Mpixels
-	</text>
-	<text name="total_time_refetch_all_http_label">
-		18, nouvelle récupération de toutes les textures de la requête HTTP, Durée : [TIME] secondes, Récupéré : [SIZE] Ko, [PIXEL] Mpixels
-	</text>
-	<spinner label="19, taux de texels/pixels :" name="texel_pixel_ratio"/>
-	<text name="texture_source_label">
-		20, source des textures :
-	</text>
-	<radio_group name="texture_source">
-		<radio_item label="Cache + HTTP" name="0"/>
-		<radio_item label="HTTP uniquement" name="1"/>
-	</radio_group>
-	<button label="Démarrer" name="start_btn"/>
-	<button label="Réinitialiser" name="clear_btn"/>
-	<button label="Fermer" name="close_btn"/>
-	<button label="Lecture du cache" name="cacheread_btn"/>
-	<button label="Écriture du cache" name="cachewrite_btn"/>
-	<button label="HTTP" name="http_btn"/>
-	<button label="Décoder" name="decode_btn"/>
-	<button label="Texture GL" name="gl_btn"/>
-	<button label="Récupérer à nouveau les données visibles du cache" name="refetchviscache_btn"/>
-	<button label="Récupérer cache" name="refetchallcache_btn"/>
-	<button label="Récupérer à nouveau les données visibles de la requête HTTP" name="refetchvishttp_btn"/>
-	<button label="Récupérer HTTP" name="refetchallhttp_btn"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/it/floater_texture_fetch_debugger.xml b/indra/newview/skins/default/xui/it/floater_texture_fetch_debugger.xml
deleted file mode 100644
index 49b6453319..0000000000
--- a/indra/newview/skins/default/xui/it/floater_texture_fetch_debugger.xml
+++ /dev/null
@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="TexFetchDebugger" title="Debugger recupero texture">
-	<text name="total_num_fetched_label">
-		1, Numero totale di texture recuperate: [NUM]
-	</text>
-	<text name="total_num_fetching_requests_label">
-		2, Numero totale di richieste di recupero: [NUM]
-	</text>
-	<text name="total_num_cache_hits_label">
-		3, Numero totale di recuperi dalla cache: [NUM]
-	</text>
-	<text name="total_num_visible_tex_label">
-		4, Numero totale di texture visibili: [NUM]
-	</text>
-	<text name="total_num_visible_tex_fetch_req_label">
-		5, Numero totale di richieste di fetching texture visibili: [NUM]
-	</text>
-	<text name="total_fetched_data_label">
-		6, Numero totale di fetching dati: [SIZE1] KB, Dati decodificati: [SIZE2] KB, [PIXEL] MPixel
-	</text>
-	<text name="total_fetched_vis_data_label">
-		7, Numero totale di dati visibili: [SIZE1] KB, Dati decodificati: [SIZE2] KB
-	</text>
-	<text name="total_fetched_rendered_data_label">
-		8, Numero totale di rendering dei dati: [SIZE1] KB, Dati decodificati: [SIZE2] KB, [PIXEL] MPixel
-	</text>
-	<text name="total_time_cache_read_label">
-		9, Tempo totale letture cache: [TIME] secondi
-	</text>
-	<text name="total_time_cache_write_label">
-		10, Tempo totale scrittura cache: [TIME] secondi
-	</text>
-	<text name="total_time_decode_label">
-		11, Tempo totale decodifica: [TIME] secondi
-	</text>
-	<text name="total_time_gl_label">
-		12, Tempo totale creazione texture gl: [TIME] secondi
-	</text>
-	<text name="total_time_http_label">
-		13, Tempo totale fetching HTTP: [TIME] secondi
-	</text>
-	<text name="total_time_fetch_label">
-		14, Tempo totale complessivo fetching: [TIME] secondi
-	</text>
-	<text name="total_time_refetch_vis_cache_label">
-		15, Nuovo fetching elementi visibili dalla cache, Tempo: [TIME] secondi, fetching: [SIZE] KB, [PIXEL] MPixels
-	</text>
-	<text name="total_time_refetch_all_cache_label">
-		16, Nuovo fetching di tutte le texture dalla cache, Tempo: [TIME] secondi, fetching: [SIZE] KB, [PIXEL] MPixels
-	</text>
-	<text name="total_time_refetch_vis_http_label">
-		17, Nuovo fetching elementi visibili da HTTP, Tempo: [TIME] secondi, fetching: [SIZE] KB, [PIXEL] MPixels
-	</text>
-	<text name="total_time_refetch_all_http_label">
-		18, Nuovo fetching di tutte le texture da HTTP, Tempo: [TIME] secondi, fetching: [SIZE] KB, [PIXEL] MPixels
-	</text>
-	<spinner label="19, Rapporto Texel/Pixel:" name="texel_pixel_ratio"/>
-	<text name="texture_source_label">
-		20, Fonte texture:
-	</text>
-	<radio_group name="texture_source">
-		<radio_item label="Cache + HTTP" name="0"/>
-		<radio_item label="Solo HTTP" name="1"/>
-	</radio_group>
-	<button label="Attiva" name="start_btn"/>
-	<button label="Reimposta" name="clear_btn"/>
-	<button label="Chiudi" name="close_btn"/>
-	<button label="Lettura cache" name="cacheread_btn"/>
-	<button label="Scrittura cache" name="cachewrite_btn"/>
-	<button label="HTTP" name="http_btn"/>
-	<button label="Decodifica" name="decode_btn"/>
-	<button label="Texture GL" name="gl_btn"/>
-	<button label="Nuovo fetch visibili cache" name="refetchviscache_btn"/>
-	<button label="Nuovo fetching di tutta la cache" name="refetchallcache_btn"/>
-	<button label="Nuovo fetch visibili HTTP" name="refetchvishttp_btn"/>
-	<button label="Nuovo fetching di tutto il contenuto HTTP" name="refetchallhttp_btn"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/ja/floater_outfit_photo_preview.xml b/indra/newview/skins/default/xui/ja/floater_outfit_photo_preview.xml
deleted file mode 100644
index 96809924c1..0000000000
--- a/indra/newview/skins/default/xui/ja/floater_outfit_photo_preview.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="outfit_photo_preview">
-	<floater.string name="Title">
-		テスク�ャ：[NAME]
-	</floater.string>
-	<floater.string name="exceed_limits">
-		アウトフィット画��最大サイズ�[MAX_WIDTH]✕[MAX_HEIGHT]��。他�テスク�ャを�択������。
-	</floater.string>
-	<floater.string name="photo_confirmation">
-		��画�を[OUTFIT]�アウトフィット画������？
-	</floater.string>
-	<text name="dimensions">
-		[WIDTH]px✕[HEIGHT]px
-	</text>
-	<text name="notification"/>
-	<button label="ＯＫ" name="ok_btn"/>
-	<button label="キャンセル" name="cancel_btn"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/ja/floater_simple_outfit_snapshot.xml b/indra/newview/skins/default/xui/ja/floater_simple_outfit_snapshot.xml
deleted file mode 100644
index 0b8030048d..0000000000
--- a/indra/newview/skins/default/xui/ja/floater_simple_outfit_snapshot.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="simple_outfit_snapshot" title="アウトフィット�スナップショット">
-	<ui_ctrl name="thumbnail_placeholder"/>
-	<button label="画�を撮影" name="new_snapshot_btn"/>
-	<button label="�存（L$ [UPLOAD_COST]）" name="save_btn"/>
-	<button label="キャンセル" name="cancel_btn"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/ja/floater_texture_fetch_debugger.xml b/indra/newview/skins/default/xui/ja/floater_texture_fetch_debugger.xml
deleted file mode 100644
index c22cbba0d5..0000000000
--- a/indra/newview/skins/default/xui/ja/floater_texture_fetch_debugger.xml
+++ /dev/null
@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="TexFetchDebugger" title="テクス�ャ�得デ�ッガ">
-	<text name="total_num_fetched_label">
-		１，�得��テクス�ャ��計数：[NUM]
-	</text>
-	<text name="total_num_fetching_requests_label">
-		２，�得リクエスト��計数：[NUM]
-	</text>
-	<text name="total_num_cache_hits_label">
-		３，キャッシュヒット��計数：[NUM]
-	</text>
-	<text name="total_num_visible_tex_label">
-		４，表示テクス�ャ��計数：[NUM]
-	</text>
-	<text name="total_num_visible_tex_fetch_req_label">
-		５，表示テクス�ャ�得リクエスト��計数：[NUM]
-	</text>
-	<text name="total_fetched_data_label">
-		６，�得��データ��計数：[SIZE1]㎅�デコード�れ�データ：[SIZE2]㎅�[PIXEL]メガピクセル
-	</text>
-	<text name="total_fetched_vis_data_label">
-		７，表示データ��計数：[SIZE1]㎅�デコード�れ�データ：[SIZE2]㎅
-	</text>
-	<text name="total_fetched_rendered_data_label">
-		８，レンダリング�れ�データ��計数：[SIZE1]㎅�デコード�れ�データ：[SIZE2]㎅�[PIXEL]メガピクセル
-	</text>
-	<text name="total_time_cache_read_label">
-		９，キャッシュ読��り��計時間：[TIME]秒
-	</text>
-	<text name="total_time_cache_write_label">
-		１�，キャッシュ書�込���計時間：[TIME]秒
-	</text>
-	<text name="total_time_decode_label">
-		１１，デコード��計時間：[TIME]秒
-	</text>
-	<text name="total_time_gl_label">
-		１２，glテクス�ャ作���計時間：[TIME]秒
-	</text>
-	<text name="total_time_http_label">
-		１３，HTTP�得��計時間：[TIME]秒
-	</text>
-	<text name="total_time_fetch_label">
-		１４，�得全体��計時間：[TIME]秒
-	</text>
-	<text name="total_time_refetch_vis_cache_label">
-		１５，キャッシュ�ら表示テクス�ャを��得�時間：[TIME]秒��得：[SIZE]㎅�[PIXEL]メガピクセル
-	</text>
-	<text name="total_time_refetch_all_cache_label">
-		１６，キャッシュ�ら����テクス�ャを�フェッ�中�時間：[TIME]秒�フェッ�済�：[SIZE]㎅�[PIXEL]メガピクセル
-	</text>
-	<text name="total_time_refetch_vis_http_label">
-		１７，HTTP�ら�視ファイルを�フェッ�中�時間：[TIME]秒�フェッ�済�：[SIZE]㎅�[PIXEL]メガピクセル
-	</text>
-	<text name="total_time_refetch_all_http_label">
-		１８，HTTP�ら����テクス�ャを�フェッ�中�時間：[TIME]秒�フェッ�済�：[SIZE]㎅�[PIXEL]メガピクセル
-	</text>
-	<spinner label="19�テセル�ピクセル比：" name="texel_pixel_ratio"/>
-	<text name="texture_source_label">
-		20�テクス�ャ ソース：
-	</text>
-	<radio_group name="texture_source">
-		<radio_item label="キャッシュ + HTTP" name="0"/>
-		<radio_item label="HTTP ��" name="1"/>
-	</radio_group>
-	<button label="開始" name="start_btn"/>
-	<button label="リセット" name="clear_btn"/>
-	<button label="閉�る" name="close_btn"/>
-	<button label="キャッシュ読��り" name="cacheread_btn"/>
-	<button label="キャッシュ書�込�" name="cachewrite_btn"/>
-	<button label="HTTP" name="http_btn"/>
-	<button label="デコード" name="decode_btn"/>
-	<button label="GLテクス�ャ" name="gl_btn"/>
-	<button label="キャッシュ表示テクス�ャ��得" name="refetchviscache_btn"/>
-	<button label="����キャッシュを�フェッ�" name="refetchallcache_btn"/>
-	<button label="HTTP表示テクス�ャ��得" name="refetchvishttp_btn"/>
-	<button label="���� HTTP を�フェッ�" name="refetchallhttp_btn"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/ja/panel_preferences_grids.xml b/indra/newview/skins/default/xui/ja/panel_preferences_grids.xml
deleted file mode 100644
index 18aca0dafc..0000000000
--- a/indra/newview/skins/default/xui/ja/panel_preferences_grids.xml
+++ /dev/null
@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<panel label="グリッド" name="grids">
-	<text name="add_grid_text">
-		新��グリッドを追加：
-	</text>
-	<line_editor name="add_grid" label="ログインURIを入力"/>
-	<button label="追加" name="add_grid_commit"/>
-	<text name="manage_grid_text">
-		グリッド管�：
-	</text>
-	<scroll_list name="grid_list">
-		<scroll_list.columns label="グリッド�" name="grid_label"/>
-		<scroll_list.columns label="ログインURI" name="login_uri"/>
-		<scroll_list.commit_callback function="Pref.SelectGrid"/>
-	</scroll_list>
-	<button label="有効化" name="activate_grid"/>
-	<button label="リフレッシュ" name="refresh_grid"/>
-	<button label="削除" name="remove_grid"/>
-	<button label="デ�ッグ" name="debug_grid"/>
-	<check_box label="ログイン時�グリッド�択を表示" name="show_grid_selection_check" tool_tip="ログイン画��グリッド�択を表示���他�ワールド�ログイン���。"/>
-</panel>
diff --git a/indra/newview/skins/default/xui/pl/floater_outfit_photo_preview.xml b/indra/newview/skins/default/xui/pl/floater_outfit_photo_preview.xml
deleted file mode 100644
index 8c7de8e34e..0000000000
--- a/indra/newview/skins/default/xui/pl/floater_outfit_photo_preview.xml
+++ /dev/null
@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
-<floater name="outfit_photo_preview">
-	<floater.string name="Title">
-		Tekstura: [NAME]
-	</floater.string>
-	<floater.string name="exceed_limits">
-		Maks. rozmiar zdjęcia stroju to [MAX_WIDTH]*[MAX_HEIGHT]. Wybierz inną teksturę.
-	</floater.string>
-	<floater.string name="photo_confirmation">
-		Ustawić to zdjęcie dla stroju [OUTFIT]?
-	</floater.string>
-	<button label="Anuluj" name="cancel_btn" />
-</floater>
diff --git a/indra/newview/skins/default/xui/pl/floater_simple_outfit_snapshot.xml b/indra/newview/skins/default/xui/pl/floater_simple_outfit_snapshot.xml
deleted file mode 100644
index 1a60b557b2..0000000000
--- a/indra/newview/skins/default/xui/pl/floater_simple_outfit_snapshot.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
-<floater name="simple_outfit_snapshot" title="ZDJĘCIE STROJU">
-	<button label="Zrób zdjęcie" name="new_snapshot_btn" />
-	<button label="Zapisz ([UPLOAD_COST]L$)" name="save_btn" />
-	<button label="Anuluj" name="cancel_btn" />
-</floater>
diff --git a/indra/newview/skins/default/xui/pl/floater_texture_fetch_debugger.xml b/indra/newview/skins/default/xui/pl/floater_texture_fetch_debugger.xml
deleted file mode 100644
index fc0687f333..0000000000
--- a/indra/newview/skins/default/xui/pl/floater_texture_fetch_debugger.xml
+++ /dev/null
@@ -1,73 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
-<floater name="TexFetchDebugger" title="Debuger Å‚adowania tekstur">
-	<text name="total_num_fetched_label">
-		1, Pobranych tekstur: [NUM]
-	</text>
-	<text name="total_num_fetching_requests_label">
-		2, Próśb o pobranie: [NUM]
-	</text>
-	<text name="total_num_cache_hits_label">
-		3, Trafień w cache: [NUM]
-	</text>
-	<text name="total_num_visible_tex_label">
-		4, Widocznych tekstur: [NUM]
-	</text>
-	<text name="total_num_visible_tex_fetch_req_label">
-		5, Próśb o pobranie widocznych tekstur: [NUM]
-	</text>
-	<text name="total_fetched_data_label">
-		6, Pobrane: [SIZE1]KB, zdekodowane: [SIZE2]KB, [PIXEL]MPikseli
-	</text>
-	<text name="total_fetched_vis_data_label">
-		7, Widoczne: [SIZE1]KB, zdekodowane: [SIZE2]KB
-	</text>
-	<text name="total_fetched_rendered_data_label">
-		8, Zrenderowane: [SIZE1]KB, zdekodowane: [SIZE2]KB, [PIXEL]MPikseli
-	</text>
-	<text name="total_time_cache_read_label">
-		9, Odczyty cache: [TIME] sekund
-	</text>
-	<text name="total_time_cache_write_label">
-		10, Zapisy cache: [TIME] sekund
-	</text>
-	<text name="total_time_decode_label">
-		11, Zdekodowania: [TIME] sekund
-	</text>
-	<text name="total_time_gl_label">
-		12, Tworzenie tekstur GL: [TIME] sekund
-	</text>
-	<text name="total_time_http_label">
-		13, Pobieranie przez HTTP: [TIME] sekund
-	</text>
-	<text name="total_time_fetch_label">
-		14, Pobieranie w sumie: [TIME] sekund
-	</text>
-	<text name="total_time_refetch_vis_cache_label">
-		15, Ponowne pobier. widocznych z cache, czas: [TIME] sekund, pobrano: [SIZE]KB, [PIXEL]MPikseli
-	</text>
-	<text name="total_time_refetch_all_cache_label">
-		16, Ponowne pobier. wszystkich z cache, czas: [TIME] sekund, pobrano: [SIZE]KB, [PIXEL]MPikseli
-	</text>
-	<text name="total_time_refetch_vis_http_label">
-		17, Ponowne pobier. widocznych z HTTP, czas: [TIME] sekund, pobrano: [SIZE]KB, [PIXEL]MPikseli
-	</text>
-	<text name="total_time_refetch_all_http_label">
-		18, Ponowne pobier. wszystkich z HTTP, czas: [TIME] sekund, pobrano: [SIZE]KB, [PIXEL]MPikseli
-	</text>
-	<spinner label="19, Wspł. Teksel/Piksel:" name="texel_pixel_ratio" />
-	<text name="texture_source_label">
-		20, Źródło tekstur:
-	</text>
-	<radio_group name="texture_source">
-		<radio_item label="Tylko HTTP" name="1" />
-	</radio_group>
-	<button label="Zamknij" name="close_btn" />
-	<button label="Odcz. cache" name="cacheread_btn" />
-	<button label="Zapis cache" name="cachewrite_btn" />
-	<button label="Dekoduj" name="decode_btn" />
-	<button label="Tekstura GL" name="gl_btn" />
-	<button label="Odśw. przez cache" name="refetchviscache_btn" />
-	<button label="Odśw. całe cache" name="refetchallcache_btn" />
-	<button label="Odśw. przez HTTP" name="refetchvishttp_btn" />
-	<button label="Odśw. całe HTTP" name="refetchallhttp_btn" />
-</floater>
diff --git a/indra/newview/skins/default/xui/pt/floater_texture_fetch_debugger.xml b/indra/newview/skins/default/xui/pt/floater_texture_fetch_debugger.xml
deleted file mode 100644
index 0e897aea09..0000000000
--- a/indra/newview/skins/default/xui/pt/floater_texture_fetch_debugger.xml
+++ /dev/null
@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="TexFetchDebugger" title="Depurador de obtenção de textura">
-	<text name="total_num_fetched_label">
-		1, Número total de texturas obtidas: [NUM]
-	</text>
-	<text name="total_num_fetching_requests_label">
-		2, Número total de solicitações de obtenção: [NUM]
-	</text>
-	<text name="total_num_cache_hits_label">
-		3, Número total de acertos de cache: [NUM]
-	</text>
-	<text name="total_num_visible_tex_label">
-		4, Número total de texturas visíveis: [NUM]
-	</text>
-	<text name="total_num_visible_tex_fetch_req_label">
-		5, Número total de solicitações de obtenção de texturas visíveis: [NUM]
-	</text>
-	<text name="total_fetched_data_label">
-		6, Número total de dados obtidos: [SIZE1]KB, Dados decodificados: [SIZE2]KB, [PIXEL]MPixels
-	</text>
-	<text name="total_fetched_vis_data_label">
-		7, Número total de dados visíveis: [SIZE1]KB, Dados decodificados: [SIZE2]KB
-	</text>
-	<text name="total_fetched_rendered_data_label">
-		8, Número total de dados renderizados: [SIZE1]KB, Dados decodificados: [SIZE2]KB, [PIXEL]MPixels
-	</text>
-	<text name="total_time_cache_read_label">
-		9, Tempo total de leituras de cache: [TIME] segundos
-	</text>
-	<text name="total_time_cache_write_label">
-		10, Tempo total de gravações em cache: [TIME] segundos
-	</text>
-	<text name="total_time_decode_label">
-		11, Tempo total das decodificações: [TIME] segundos
-	</text>
-	<text name="total_time_gl_label">
-		12, Tempo total de criação de texturas gl: [TIME] segundos
-	</text>
-	<text name="total_time_http_label">
-		13, Tempo total de obtenção de HTTP: [TIME] segundos
-	</text>
-	<text name="total_time_fetch_label">
-		14, Tempo total de obtenção completa: [TIME] segundos
-	</text>
-	<text name="total_time_refetch_vis_cache_label">
-		15, Obtendo novamente visíveis do cache, Tempo: [TIME] segundos, Obtidos: [SIZE]KB, [PIXEL]MPixels
-	</text>
-	<text name="total_time_refetch_all_cache_label">
-		16, Obtendo novamente todas as texturas do cache, Tempo: [TIME] segundos, Obtidos: [SIZE]KB, [PIXEL]MPixels
-	</text>
-	<text name="total_time_refetch_vis_http_label">
-		17, Obtendo novamente visíveis do HTTP, Tempo: [TIME] segundos, Obtidos: [SIZE]KB, [PIXEL]MPixels
-	</text>
-	<text name="total_time_refetch_all_http_label">
-		18, Obtendo novamente todas as texturas do HTTP, Tempo: [TIME] segundos, Obtidos: [SIZE]KB, [PIXEL]MPixels
-	</text>
-	<spinner label="19, Proporção de texel/pixel:" name="texel_pixel_ratio"/>
-	<text name="texture_source_label">
-		20, Origem da textura:
-	</text>
-	<radio_group name="texture_source">
-		<radio_item label="Cache + HTTP" name="0"/>
-		<radio_item label="Apenas HTTP" name="1"/>
-	</radio_group>
-	<button label="Iniciar" name="start_btn"/>
-	<button label="Redefinir" name="clear_btn"/>
-	<button label="Fechar" name="close_btn"/>
-	<button label="Leitura do cache" name="cacheread_btn"/>
-	<button label="Gravação em cache" name="cachewrite_btn"/>
-	<button label="HTTP" name="http_btn"/>
-	<button label="Decodificar" name="decode_btn"/>
-	<button label="Textura GL" name="gl_btn"/>
-	<button label="Obter novamente cache visível" name="refetchviscache_btn"/>
-	<button label="Obter todo o cache novamente" name="refetchallcache_btn"/>
-	<button label="Obter novamente HTTP visível" name="refetchvishttp_btn"/>
-	<button label="Obter todo o HTTP novamente" name="refetchallhttp_btn"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/ru/floater_texture_fetch_debugger.xml b/indra/newview/skins/default/xui/ru/floater_texture_fetch_debugger.xml
deleted file mode 100644
index 628e6c5c87..0000000000
--- a/indra/newview/skins/default/xui/ru/floater_texture_fetch_debugger.xml
+++ /dev/null
@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="TexFetchDebugger" title="Отладчик извлечени� тек�тур">
-	<text name="total_num_fetched_label">
-		1, Общее количе�тво извлеченных тек�тур: [NUM]
-	</text>
-	<text name="total_num_fetching_requests_label">
-		2, Общее количе�тво запро�ов на извлечение: [NUM]
-	</text>
-	<text name="total_num_cache_hits_label">
-		3, Общее количе�тво попаданий в к�ш: [NUM]
-	</text>
-	<text name="total_num_visible_tex_label">
-		4, Общее количе�тво видимых тек�тур: [NUM]
-	</text>
-	<text name="total_num_visible_tex_fetch_req_label">
-		5, Общее количе�тво запро�ов на извлечение видимых тек�тур: [NUM]
-	</text>
-	<text name="total_fetched_data_label">
-		6, Общий объем извлеченных данных: [SIZE1] КБ, декодированные данные: [SIZE2] КБ, [PIXEL] Мпик�елов
-	</text>
-	<text name="total_fetched_vis_data_label">
-		7, Общий объем видимых данных: [SIZE1] КБ, декодированные данные: [SIZE2] КБ
-	</text>
-	<text name="total_fetched_rendered_data_label">
-		8, Общий объем визуализированных данных: [SIZE1] КБ, декодированные данные: [SIZE2] КБ, [PIXEL] Мпик�елов
-	</text>
-	<text name="total_time_cache_read_label">
-		9, Общее врем� чтени� из к�ша: [TIME] �
-	</text>
-	<text name="total_time_cache_write_label">
-		10, Общее врем� запи�и в к�ш: [TIME] �
-	</text>
-	<text name="total_time_decode_label">
-		11, Общее врем� декодировани�: [TIME] �
-	</text>
-	<text name="total_time_gl_label">
-		12, Общее врем� �оздани� тек�тур: [TIME] �
-	</text>
-	<text name="total_time_http_label">
-		13, Общее врем� HTTP-извлечени�: [TIME] �
-	</text>
-	<text name="total_time_fetch_label">
-		14, Общее врем� полного извлечени�: [TIME] �
-	</text>
-	<text name="total_time_refetch_vis_cache_label">
-		15, Повторное извлечение из к�ша, врем�: [TIME] �, извлечено: [SIZE] КБ, [PIXEL] Мпик�елов
-	</text>
-	<text name="total_time_refetch_all_cache_label">
-		16, Повторное извлечение в�ех тек�тур из к�ша, врем�: [TIME] �, извлечено: [SIZE] КБ, [PIXEL] Мпик�елов
-	</text>
-	<text name="total_time_refetch_vis_http_label">
-		17, Повторное извлечение из HTTP, врем�: [TIME] �, извлечено: [SIZE] КБ, [PIXEL] Мпик�елов
-	</text>
-	<text name="total_time_refetch_all_http_label">
-		18, Повторное извлечение в�ех тек�тур из HTTP, врем�: [TIME] �, извлечено: [SIZE] КБ, [PIXEL] Мпик�елов
-	</text>
-	<spinner label="19, Отношение тек�елы/пик�елы:" name="texel_pixel_ratio"/>
-	<text name="texture_source_label">
-		20, И�то�ник тек�тур:
-	</text>
-	<radio_group name="texture_source">
-		<radio_item label="К�ш + HTTP" name="0"/>
-		<radio_item label="Только HTTP" name="1"/>
-	</radio_group>
-	<button label="Пу�к" name="start_btn"/>
-	<button label="Сбро�" name="clear_btn"/>
-	<button label="Закрыть" name="close_btn"/>
-	<button label="Чтение к�ша" name="cacheread_btn"/>
-	<button label="Запи�ь в к�ш" name="cachewrite_btn"/>
-	<button label="HTTP" name="http_btn"/>
-	<button label="Декодировать" name="decode_btn"/>
-	<button label="Тек�тура GL" name="gl_btn"/>
-	<button label="Повторно извлечь из к�ша" name="refetchviscache_btn"/>
-	<button label="Повторно извлечь в�е из к�ша" name="refetchallcache_btn"/>
-	<button label="Повторно извлечь из HTTP" name="refetchvishttp_btn"/>
-	<button label="Повторно извлечь в�е из HTTP" name="refetchallhttp_btn"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/tr/floater_texture_fetch_debugger.xml b/indra/newview/skins/default/xui/tr/floater_texture_fetch_debugger.xml
deleted file mode 100644
index 42426225c7..0000000000
--- a/indra/newview/skins/default/xui/tr/floater_texture_fetch_debugger.xml
+++ /dev/null
@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="TexFetchDebugger" title="Doku Alımı Hata Ayıklayıcı">
-	<text name="total_num_fetched_label">
-		1, Alınan dokuların toplam sayısı: [NUM]
-	</text>
-	<text name="total_num_fetching_requests_label">
-		2, Toplam alım talebi sayısı: [NUM]
-	</text>
-	<text name="total_num_cache_hits_label">
-		3, Toplam önbellek isabet sayısı: [NUM]
-	</text>
-	<text name="total_num_visible_tex_label">
-		4, Görünür dokuların toplam sayısı: [NUM]
-	</text>
-	<text name="total_num_visible_tex_fetch_req_label">
-		5, Görünür dokuların alınması için toplam talep sayısı: [NUM]
-	</text>
-	<text name="total_fetched_data_label">
-		6, Alınan verilerin toplam sayısı: [SIZE1]KB, Şifresi Çözülen Veri: [SIZE2]KB, [PIXEL]MPiksel
-	</text>
-	<text name="total_fetched_vis_data_label">
-		7, Görünür verilerin toplam sayısı: [SIZE1]KB, Şifresi Çözülen Veri: [SIZE2]KB
-	</text>
-	<text name="total_fetched_rendered_data_label">
-		8, İşlenen verilerin toplam sayısı: [SIZE1]KB, Şifresi Çözülen Veri: [SIZE2]KB, [PIXEL]MPiksel
-	</text>
-	<text name="total_time_cache_read_label">
-		9, Önbellek okunması için toplam süre: [TIME] saniye
-	</text>
-	<text name="total_time_cache_write_label">
-		10, Önbellek yazılması için toplam süre: [TIME] saniye
-	</text>
-	<text name="total_time_decode_label">
-		11, Şifre çözülmesi için toplam süre: [TIME] saniye
-	</text>
-	<text name="total_time_gl_label">
-		12, GL doku oluşturma için toplam süre: [TIME] saniye
-	</text>
-	<text name="total_time_http_label">
-		13, HTTP alımı için toplam süre: [TIME] saniye
-	</text>
-	<text name="total_time_fetch_label">
-		14, Tüm alımlar için toplam süre: [TIME] saniye
-	</text>
-	<text name="total_time_refetch_vis_cache_label">
-		15, Görünür dokuların önbellekten tekrar alınması, Süre: [TIME] saniye, Alınan: [SIZE]KB, [PIXEL]MPiksel
-	</text>
-	<text name="total_time_refetch_all_cache_label">
-		16, Tüm dokuların önbellekten tekrar alınması, Süre: [TIME] saniye, Alınan: [SIZE]KB, [PIXEL]MPiksel
-	</text>
-	<text name="total_time_refetch_vis_http_label">
-		17, Görünür dokuların HTTP&apos;den tekrar alınması, Süre: [TIME] saniye, Alınan: [SIZE]KB, [PIXEL]MPiksel
-	</text>
-	<text name="total_time_refetch_all_http_label">
-		18, Tüm dokuların HTTP&apos;den tekrar alınması, Süre: [TIME] saniye, Alınan: [SIZE]KB, [PIXEL]MPiksel
-	</text>
-	<spinner label="19, Teksel/Piksel Oranı:" name="texel_pixel_ratio"/>
-	<text name="texture_source_label">
-		20, Doku Kaynağı:
-	</text>
-	<radio_group name="texture_source">
-		<radio_item label="Önbellek + HTTP" name="0"/>
-		<radio_item label="Sadece HTTP" name="1"/>
-	</radio_group>
-	<button label="BaÅŸla" name="start_btn"/>
-	<button label="Sıfırla" name="clear_btn"/>
-	<button label="Kapat" name="close_btn"/>
-	<button label="Önbellek Okunması" name="cacheread_btn"/>
-	<button label="Önbellek Yazılması" name="cachewrite_btn"/>
-	<button label="HTTP" name="http_btn"/>
-	<button label="Şifre Çöz" name="decode_btn"/>
-	<button label="GL Dokusu" name="gl_btn"/>
-	<button label="Görünür Dokuları Önbellekten Tekrar Al" name="refetchviscache_btn"/>
-	<button label="Tüm Önbelleği Tekrar Al" name="refetchallcache_btn"/>
-	<button label="Görünür Dokuları HTTP&apos;den Tekrar Al" name="refetchvishttp_btn"/>
-	<button label="Tüm HTTP&apos;yi Tekrar Al" name="refetchallhttp_btn"/>
-</floater>
diff --git a/indra/newview/skins/default/xui/zh/floater_texture_fetch_debugger.xml b/indra/newview/skins/default/xui/zh/floater_texture_fetch_debugger.xml
deleted file mode 100644
index 0dcac17a75..0000000000
--- a/indra/newview/skins/default/xui/zh/floater_texture_fetch_debugger.xml
+++ /dev/null
@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="utf-8" standalone="yes"?>
-<floater name="TexFetchDebugger" title="�質擷�除錯器">
-	<text name="total_num_fetched_label">
-		1. 已擷��質總數：[NUM]
-	</text>
-	<text name="total_num_fetching_requests_label">
-		2. 總擷�請求數：[NUM]
-	</text>
-	<text name="total_num_cache_hits_label">
-		3. 快�總讀�數：[NUM]
-	</text>
-	<text name="total_num_visible_tex_label">
-		4. �見�質總數：[NUM]
-	</text>
-	<text name="total_num_visible_tex_fetch_req_label">
-		5. �見�質擷�總請求數：[NUM]
-	</text>
-	<text name="total_fetched_data_label">
-		6. 總擷�資料�：[SIZE1] KB，解碼資料�：[SIZE2] KB，[PIXEL] 百��素
-	</text>
-	<text name="total_fetched_vis_data_label">
-		7. �見資料總�：[SIZE1] KB，解碼資料�：[SIZE2] KB
-	</text>
-	<text name="total_fetched_rendered_data_label">
-		8. 總呈�資料�：[SIZE1] KB，解碼資料�：[SIZE2] KB，[PIXEL] 百��素
-	</text>
-	<text name="total_time_cache_read_label">
-		9. 快�讀�總時間：[TIME] 秒
-	</text>
-	<text name="total_time_cache_write_label">
-		10. 快�寫入總時間：[TIME] 秒
-	</text>
-	<text name="total_time_decode_label">
-		11. 解碼總時間：[TIME] 秒
-	</text>
-	<text name="total_time_gl_label">
-		12. 建立 gl �質總時間：[TIME] 秒
-	</text>
-	<text name="total_time_http_label">
-		13. HTTP 擷�總時間：[TIME] 秒
-	</text>
-	<text name="total_time_fetch_label">
-		14. 所有擷�動作總時間：[TIME] 秒
-	</text>
-	<text name="total_time_refetch_vis_cache_label">
-		15. 自快��新擷��見�質，時間：[TIME] 秒，擷��：[SIZE] KB，[PIXEL] 百��素
-	</text>
-	<text name="total_time_refetch_all_cache_label">
-		16. 從快��新擷�所有�質，時間：[TIME] 秒，擷��：[SIZE] KB，[PIXEL] 百��素
-	</text>
-	<text name="total_time_refetch_vis_http_label">
-		17. 自 HTTP �新擷��見�質，時間：[TIME] 秒，擷��：[SIZE] KB，[PIXEL] 百��素
-	</text>
-	<text name="total_time_refetch_all_http_label">
-		18. 自 HTTP �新擷�所有�質，時間：[TIME] 秒，擷��：[SIZE] KB，[PIXEL] 百��素
-	</text>
-	<spinner label="19. �質/�素比率：" name="texel_pixel_ratio"/>
-	<text name="texture_source_label">
-		20. �質來�：
-	</text>
-	<radio_group name="texture_source">
-		<radio_item label="快� + HTTP" name="0"/>
-		<radio_item label="僅� HTTP" name="1"/>
-	</radio_group>
-	<button label="開始" name="start_btn"/>
-	<button label="�設" name="clear_btn"/>
-	<button label="關閉" name="close_btn"/>
-	<button label="快�讀�" name="cacheread_btn"/>
-	<button label="快�寫入" name="cachewrite_btn"/>
-	<button label="HTTP" name="http_btn"/>
-	<button label="解碼" name="decode_btn"/>
-	<button label="GL �質" name="gl_btn"/>
-	<button label="快����見�質" name="refetchviscache_btn"/>
-	<button label="�新擷�所有快�" name="refetchallcache_btn"/>
-	<button label="HTTP ���見�質" name="refetchvishttp_btn"/>
-	<button label="�新擷�所有 HTTP" name="refetchallhttp_btn"/>
-</floater>
diff --git a/indra/newview/tests/llagentaccess_test.cpp b/indra/newview/tests/llagentaccess_test.cpp
index 6739096baa..6f5b3a9721 100644
--- a/indra/newview/tests/llagentaccess_test.cpp
+++ b/indra/newview/tests/llagentaccess_test.cpp
@@ -55,12 +55,12 @@ LLControlVariable* LLControlGroup::declareU32(const std::string& name, U32 initi
     return NULL;
 }
 
-void LLControlGroup::setU32(const std::string& name, U32 val)
+void LLControlGroup::setU32(std::string_view name, U32 val)
 {
     test_preferred_maturity = val;
 }
 
-U32 LLControlGroup::getU32(const std::string& name)
+U32 LLControlGroup::getU32(std::string_view name)
 {
     return test_preferred_maturity;
 }
diff --git a/indra/newview/tests/lllogininstance_test.cpp b/indra/newview/tests/lllogininstance_test.cpp
index 62250cbbfd..df0f006d02 100644
--- a/indra/newview/tests/lllogininstance_test.cpp
+++ b/indra/newview/tests/lllogininstance_test.cpp
@@ -74,7 +74,7 @@ static LLSD gLoginCreds;
 static bool gDisconnectCalled = false;
 
 #include "../llviewerwindow.h"
-void LLViewerWindow::setShowProgress(BOOL show) {}
+void LLViewerWindow::setShowProgress(bool show) {}
 LLProgressView * LLViewerWindow::getProgressView(void) const { return 0; }
 
 LLViewerWindow* gViewerWindow;
@@ -198,13 +198,13 @@ LLControlGroup gSavedSettings("Global");
 LLControlGroup::LLControlGroup(const std::string& name) :
     LLInstanceTracker<LLControlGroup, std::string>(name){}
 LLControlGroup::~LLControlGroup() {}
-void LLControlGroup::setBOOL(const std::string& name, BOOL val) {}
-BOOL LLControlGroup::getBOOL(const std::string& name) { return FALSE; }
-F32 LLControlGroup::getF32(const std::string& name) { return 0.0f; }
-U32 LLControlGroup::saveToFile(const std::string& filename, BOOL nondefault_only) { return 1; }
-void LLControlGroup::setString(const std::string& name, const std::string& val) {}
-std::string LLControlGroup::getString(const std::string& name) { return "test_string"; }
-LLControlVariable* LLControlGroup::declareBOOL(const std::string& name, BOOL initial_val, const std::string& comment, LLControlVariable::ePersist persist) { return NULL; }
+void LLControlGroup::setBOOL(std::string_view name, bool val) {}
+bool LLControlGroup::getBOOL(std::string_view name) { return false; }
+F32 LLControlGroup::getF32(std::string_view name) { return 0.0f; }
+U32 LLControlGroup::saveToFile(const std::string& filename, bool nondefault_only) { return 1; }
+void LLControlGroup::setString(std::string_view name, const std::string& val) {}
+std::string LLControlGroup::getString(std::string_view name) { return "test_string"; }
+LLControlVariable* LLControlGroup::declareBOOL(const std::string& name, bool initial_val, const std::string& comment, LLControlVariable::ePersist persist) { return NULL; }
 LLControlVariable* LLControlGroup::declareString(const std::string& name, const std::string &initial_val, const std::string& comment, LLControlVariable::ePersist persist) { return NULL; }
 
 #include "lluicolortable.h"
@@ -235,7 +235,7 @@ static LLEventPump * gTOSReplyPump = NULL;
 LLPointer<LLSecAPIHandler> gSecAPIHandler;
 
 //static
-LLFloater* LLFloaterReg::showInstance(const std::string& name, const LLSD& key, BOOL focus)
+LLFloater* LLFloaterReg::showInstance(const std::string& name, const LLSD& key, bool focus)
 {
     gTOSType = name;
     gTOSReplyPump = &LLEventPumps::instance().obtain(key["reply_pump"]);
@@ -345,13 +345,13 @@ namespace tut
             gTOSReplyPump = 0; // clear the callback.
 
 
-            gSavedSettings.declareBOOL("NoInventoryLibrary", FALSE, "", LLControlVariable::PERSIST_NO);
-            gSavedSettings.declareBOOL("ConnectAsGod", FALSE, "", LLControlVariable::PERSIST_NO);
-            gSavedSettings.declareBOOL("UseDebugMenus", FALSE, "", LLControlVariable::PERSIST_NO);
+            gSavedSettings.declareBOOL("NoInventoryLibrary", false, "", LLControlVariable::PERSIST_NO);
+            gSavedSettings.declareBOOL("ConnectAsGod", false, "", LLControlVariable::PERSIST_NO);
+            gSavedSettings.declareBOOL("UseDebugMenus", false, "", LLControlVariable::PERSIST_NO);
             gSavedSettings.declareString("ClientSettingsFile", "test_settings.xml", "", LLControlVariable::PERSIST_NO);
             gSavedSettings.declareString("NextLoginLocation", "", "", LLControlVariable::PERSIST_NO);
-            gSavedSettings.declareBOOL("LoginLastLocation", FALSE, "", LLControlVariable::PERSIST_NO);
-            gSavedSettings.declareBOOL("CmdLineSkipUpdater", TRUE, "", LLControlVariable::PERSIST_NO);
+            gSavedSettings.declareBOOL("LoginLastLocation", false, "", LLControlVariable::PERSIST_NO);
+            gSavedSettings.declareBOOL("CmdLineSkipUpdater", true, "", LLControlVariable::PERSIST_NO);
 
             LLSD authenticator = LLSD::emptyMap();
             LLSD identifier = LLSD::emptyMap();
diff --git a/indra/newview/tests/llsecapi_test.cpp b/indra/newview/tests/llsecapi_test.cpp
index ef3da40397..1a2fa7d8f6 100644
--- a/indra/newview/tests/llsecapi_test.cpp
+++ b/indra/newview/tests/llsecapi_test.cpp
@@ -43,8 +43,8 @@ LLControlVariable* LLControlGroup::declareString(const std::string& name,
                                    const std::string& initial_val,
                                    const std::string& comment,
                                    LLControlVariable::ePersist persist) {return NULL;}
-void LLControlGroup::setString(const std::string& name, const std::string& val){}
-std::string LLControlGroup::getString(const std::string& name)
+void LLControlGroup::setString(std::string_view name, const std::string& val){}
+std::string LLControlGroup::getString(std::string_view name)
 {
     return "";
 }
@@ -109,10 +109,10 @@ namespace tut
     {
         // retrieve an unknown handler
 
-        ensure("'Unknown' handler should be NULL", !(BOOL)getSecHandler("unknown"));
+        ensure("'Unknown' handler should be NULL", getSecHandler("unknown") == nullptr);
         LLPointer<LLSecAPIHandler> test1_handler =  new LLSecAPIBasicHandler();
         registerSecHandler("sectest1", test1_handler);
-        ensure("'Unknown' handler should be NULL", !(BOOL)getSecHandler("unknown"));
+        ensure("'Unknown' handler should be NULL", getSecHandler("unknown") == nullptr);
         LLPointer<LLSecAPIHandler> retrieved_test1_handler = getSecHandler("sectest1");
         ensure("Retrieved sectest1 handler should be the same",
                retrieved_test1_handler == test1_handler);
@@ -120,7 +120,7 @@ namespace tut
         // insert a second handler
         LLPointer<LLSecAPIHandler> test2_handler =  new LLSecAPIBasicHandler();
         registerSecHandler("sectest2", test2_handler);
-        ensure("'Unknown' handler should be NULL", !(BOOL)getSecHandler("unknown"));
+        ensure("'Unknown' handler should be NULL", getSecHandler("unknown") == nullptr);
         retrieved_test1_handler = getSecHandler("sectest1");
         ensure("Retrieved sectest1 handler should be the same",
                retrieved_test1_handler == test1_handler);
diff --git a/indra/newview/tests/llsechandler_basic_test.cpp b/indra/newview/tests/llsechandler_basic_test.cpp
index bfe32406cb..f4ee15319e 100644
--- a/indra/newview/tests/llsechandler_basic_test.cpp
+++ b/indra/newview/tests/llsechandler_basic_test.cpp
@@ -78,8 +78,8 @@ LLControlVariable* LLControlGroup::declareString(const std::string& name,
                                    const std::string& initial_val,
                                    const std::string& comment,
                                    LLControlVariable::ePersist persist) {return NULL;}
-void LLControlGroup::setString(const std::string& name, const std::string& val){}
-std::string LLControlGroup::getString(const std::string& name)
+void LLControlGroup::setString(std::string_view name, const std::string& val){}
+std::string LLControlGroup::getString(std::string_view name)
 {
 
     if (name == "FirstName")
@@ -90,7 +90,7 @@ std::string LLControlGroup::getString(const std::string& name)
 }
 
 // Stub for --no-verify-ssl-cert
-BOOL LLControlGroup::getBOOL(const std::string& name) { return FALSE; }
+bool LLControlGroup::getBOOL(std::string_view name) { return false; }
 
 LLSD LLCredential::getLoginParams()
 {
@@ -232,381 +232,402 @@ namespace tut
         "Certificate:\n"
         "    Data:\n"
         "        Version: 3 (0x2)\n"
-        "        Serial Number:\n"
-        "            82:2f:8f:eb:8d:06:24:b0\n"
+        "        Serial Number: ef:54:d8:f7:da:18:e8:19\n"
         "    Signature Algorithm: sha256WithRSAEncryption\n"
         "        Issuer: C=US, ST=California, L=San Francisco, O=Linden Lab, OU=Second Life Engineering, CN=Integration Test Root CA/emailAddress=noreply@lindenlab.com\n"
         "        Validity\n"
-        "            Not Before: May 22 22:19:45 2018 GMT\n"
-        "            Not After : May 17 22:19:45 2038 GMT\n"
+        "            Not Before: Jul 23 11:46:26 2024 GMT\n"
+        "            Not After : Jul 21 11:46:26 2034 GMT\n"
         "        Subject: C=US, ST=California, L=San Francisco, O=Linden Lab, OU=Second Life Engineering, CN=Integration Test Root CA/emailAddress=noreply@lindenlab.com\n"
         "        Subject Public Key Info:\n"
         "            Public Key Algorithm: rsaEncryption\n"
         "                Public-Key: (4096 bit)\n"
         "                Modulus:\n"
-        "                    00:bd:e0:79:dd:3b:a6:ac:87:d0:39:f0:58:c7:a4:\n"
-        "                    42:42:f6:5f:93:b0:36:04:b5:e2:d5:f7:2a:c0:6c:\n"
-        "                    a0:13:d2:1e:02:81:57:02:50:4c:57:b7:ef:27:9e:\n"
-        "                    f6:f1:f1:30:30:72:1e:57:34:e5:3f:82:3c:21:c4:\n"
-        "                    66:d2:73:63:6c:91:e6:dd:49:9e:9c:b1:34:6a:81:\n"
-        "                    45:a1:6e:c4:50:28:f2:d8:e3:fe:80:2f:83:aa:28:\n"
-        "                    91:b4:8c:57:c9:f1:16:d9:0c:87:3c:25:80:a0:81:\n"
-        "                    8d:71:f2:96:e2:16:f1:97:c4:b0:d8:53:bb:13:6c:\n"
-        "                    73:54:2f:29:94:85:cf:86:6e:75:71:ad:39:e3:fc:\n"
-        "                    39:12:53:93:1c:ce:39:e0:33:da:49:b7:3d:af:b0:\n"
-        "                    37:ce:77:09:03:27:32:70:c0:9c:7f:9c:89:ce:90:\n"
-        "                    45:b0:7d:94:8b:ff:13:27:ba:88:7f:ae:c4:aa:73:\n"
-        "                    d5:47:b8:87:69:89:80:0c:c1:22:18:78:c2:0d:47:\n"
-        "                    d9:10:ff:80:79:0d:46:71:ec:d9:ba:c9:f3:77:fd:\n"
-        "                    92:6d:1f:0f:d9:54:18:6d:f6:72:24:5c:5c:3d:43:\n"
-        "                    49:35:3e:1c:28:de:7e:44:dc:29:c3:9f:62:04:46:\n"
-        "                    aa:c4:e6:69:6a:15:f8:e3:74:1c:14:e9:f4:97:7c:\n"
-        "                    30:6c:d4:28:fc:2a:0e:1d:6d:39:2e:1d:f9:17:43:\n"
-        "                    35:5d:23:e7:ba:e3:a8:e9:97:6b:3c:3e:23:ef:d8:\n"
-        "                    bc:fb:7a:57:37:39:93:59:03:fc:78:ca:b1:31:ef:\n"
-        "                    26:19:ed:56:e1:63:c3:ad:99:80:5b:47:b5:03:35:\n"
-        "                    5f:fe:6a:a6:21:63:ec:50:fb:4e:c9:f9:ae:a5:66:\n"
-        "                    d0:55:33:8d:e6:c5:50:5a:c6:8f:5c:34:45:a7:72:\n"
-        "                    da:50:f6:66:4c:19:f5:d1:e4:fb:11:8b:a1:b5:4e:\n"
-        "                    09:43:81:3d:39:28:86:3b:fe:07:28:97:02:b5:3a:\n"
-        "                    07:5f:4a:20:80:1a:7d:a4:8c:f7:6c:f6:c5:9b:f6:\n"
-        "                    61:e5:c7:b0:c3:d5:58:38:7b:bb:47:1e:34:d6:16:\n"
-        "                    55:c5:d2:6c:b0:93:77:b1:90:69:06:b1:53:cb:1b:\n"
-        "                    84:71:cf:b8:87:1b:1e:44:35:b4:2b:bb:04:59:58:\n"
-        "                    0b:e8:93:d8:ae:21:9b:b1:1c:89:30:ae:11:80:77:\n"
-        "                    cc:16:f3:d6:35:ed:a1:b3:70:b3:4f:cd:a1:56:99:\n"
-        "                    ee:0e:c0:00:a4:09:70:c3:5b:0b:be:a1:07:18:dd:\n"
-        "                    c6:f4:6d:8b:58:bc:f9:bb:4b:01:2c:f6:cc:2c:9b:\n"
-        "                    87:0e:b1:4f:9c:10:be:fc:45:e2:a4:ec:7e:fc:ff:\n"
-        "                    45:b8:53\n"
+        "                    00:c6:cc:07:f4:0b:17:06:4d:a6:30:b4:c7:02:6b:\n"
+        "                    9d:a4:47:a6:09:0e:60:1a:32:d4:6b:42:88:ee:c5:\n"
+        "                    b9:e9:fb:b5:0b:60:dc:a2:45:92:a5:bb:88:12:fc:\n"
+        "                    42:1a:80:32:79:16:62:7a:97:af:84:28:53:3c:c1:\n"
+        "                    f2:68:c0:4e:45:e4:0a:63:f9:34:1d:a2:8b:cc:70:\n"
+        "                    df:c6:65:c0:ba:31:32:d2:9d:0c:c8:ce:dc:11:12:\n"
+        "                    a4:11:fa:d3:c8:56:e2:31:8a:e3:fb:91:40:da:25:\n"
+        "                    55:d1:f2:75:9b:4d:fa:b8:1f:b5:6d:9b:e1:fe:5d:\n"
+        "                    e8:c4:02:79:14:ef:7d:5a:b3:3a:1e:b6:d0:60:2c:\n"
+        "                    90:dc:22:e2:c5:ae:85:1f:b4:9d:7a:20:f8:af:63:\n"
+        "                    56:25:1a:64:f3:9c:3f:9a:cf:68:08:0a:37:db:d0:\n"
+        "                    a3:65:26:db:80:82:ff:e0:1b:51:c8:ee:f6:ad:c2:\n"
+        "                    b4:f2:ab:d2:e8:85:86:77:28:d0:63:4a:71:78:41:\n"
+        "                    e3:8c:7f:71:51:31:af:24:3f:fa:8d:d0:d8:0b:e2:\n"
+        "                    7e:79:33:8a:bb:d2:00:9e:2e:c8:cd:d5:50:92:b8:\n"
+        "                    5c:5a:0b:99:ef:05:39:67:da:be:70:36:51:37:37:\n"
+        "                    20:6f:84:ab:29:11:00:7b:38:32:ba:0b:bc:34:a6:\n"
+        "                    b5:c6:a7:f0:c0:25:2d:38:0b:72:40:ab:cf:e6:ff:\n"
+        "                    97:75:ff:e2:a9:3c:2a:57:ce:e4:52:20:8c:de:fe:\n"
+        "                    68:ce:54:85:37:ba:b3:7f:2e:53:58:ea:9b:ac:79:\n"
+        "                    6b:16:65:b8:11:88:5a:46:eb:9e:9e:80:3c:89:91:\n"
+        "                    35:e0:c5:33:45:c8:86:4d:25:51:39:b1:72:97:2b:\n"
+        "                    b3:c8:c9:e8:11:cd:32:41:c8:c1:56:22:7e:33:81:\n"
+        "                    85:61:ab:da:9e:6e:5f:24:1c:0f:9b:fa:da:9d:86:\n"
+        "                    1a:66:f6:32:2a:10:80:ea:72:7a:4a:ef:c0:f2:7c:\n"
+        "                    43:02:e6:70:19:6a:e1:02:0a:00:80:51:1c:a3:03:\n"
+        "                    8b:6d:89:9f:91:37:90:d6:d8:9c:73:77:06:9e:bc:\n"
+        "                    95:89:66:ee:43:40:a3:ee:43:a3:f6:2d:43:dd:7b:\n"
+        "                    f0:2f:0b:12:37:49:b7:81:5a:e2:54:6d:71:88:ff:\n"
+        "                    fe:7e:41:25:35:4c:b4:b9:62:65:dd:9f:1f:7a:06:\n"
+        "                    6e:2b:20:58:78:da:08:66:a8:f1:89:de:8f:7f:5c:\n"
+        "                    5e:c2:72:33:7f:b6:8e:41:4c:26:f6:4c:d4:0e:11:\n"
+        "                    44:da:c7:14:f7:8b:79:4e:53:29:87:15:b1:12:e9:\n"
+        "                    19:2b:54:33:d6:2e:7f:bd:42:20:be:fc:d7:9c:b4:\n"
+        "                    7a:0a:db\n"
         "                Exponent: 65537 (0x10001)\n"
         "        X509v3 extensions:\n"
-        "            X509v3 Subject Key Identifier: \n"
-        "                8A:22:C6:9C:2E:11:F3:40:0C:CE:82:0C:22:59:FF:F8:7F:D0:B9:13\n"
-        "            X509v3 Authority Key Identifier: \n"
-        "                keyid:8A:22:C6:9C:2E:11:F3:40:0C:CE:82:0C:22:59:FF:F8:7F:D0:B9:13\n"
+        "            X509v3 Subject Key Identifier:\n"
+        "                4D:7D:AE:0D:A5:5E:22:5A:6A:8F:19:61:54:B3:58:CB:7B:C0:BD:DA\n"
+        "            X509v3 Authority Key Identifier:\n"
+        "                keyid:4D:7D:AE:0D:A5:5E:22:5A:6A:8F:19:61:54:B3:58:CB:7B:C0:BD:DA\n"
         "\n"
-        "            X509v3 Basic Constraints: critical\n"
+        "            X509v3 Basic Constraints:\n"
         "                CA:TRUE\n"
-        "            X509v3 Key Usage: critical\n"
-        "                Digital Signature, Certificate Sign, CRL Sign\n"
         "    Signature Algorithm: sha256WithRSAEncryption\n"
-        "         b3:cb:33:eb:0e:02:64:f4:55:9a:3d:03:9a:cf:6a:4c:18:43:\n"
-        "         f7:42:cb:65:dc:61:52:e5:9f:2f:42:97:3c:93:16:22:d4:af:\n"
-        "         ae:b2:0f:c3:9b:ef:e0:cc:ee:b6:b1:69:a3:d8:da:26:c3:ad:\n"
-        "         3b:c5:64:dc:9f:d4:c2:53:4b:91:6d:c4:92:09:0b:ac:f0:99:\n"
-        "         be:6f:b9:3c:03:4a:6d:9f:01:5d:ec:5a:9a:f3:a7:e5:3b:2c:\n"
-        "         99:57:7d:7e:25:15:68:20:12:30:96:16:86:f5:db:74:90:60:\n"
-        "         fe:8b:df:99:f6:f7:62:49:9f:bc:8d:45:23:0a:c8:73:b8:79:\n"
-        "         80:3c:b9:e5:72:85:4b:b3:81:66:74:a2:72:92:4c:44:fd:7b:\n"
-        "         46:2e:21:a2:a9:81:a2:f3:26:4d:e3:89:7d:78:b0:c6:6f:b5:\n"
-        "         87:cb:ee:25:ed:27:1f:75:13:fa:6d:e9:37:73:ad:07:bb:af:\n"
-        "         d3:6c:87:ea:02:01:70:bd:53:aa:ce:39:2c:d4:66:39:33:aa:\n"
-        "         d1:9c:ee:67:e3:a9:45:d2:7b:2e:54:09:af:70:5f:3f:5a:67:\n"
-        "         2e:6c:72:ef:e0:9d:92:28:4a:df:ba:0b:b7:23:ca:5b:04:11:\n"
-        "         45:d1:51:e9:ea:c9:ec:54:fa:34:46:ae:fc:dc:6c:f8:1e:2c:\n"
-        "         9e:f4:71:51:8d:b5:a1:26:9a:13:30:be:1e:41:25:59:58:05:\n"
-        "         2c:64:c8:f9:5e:38:ae:dc:93:b0:8a:d6:38:74:02:cb:ce:ce:\n"
-        "         95:31:76:f6:7c:bf:a4:a1:8e:27:fd:ca:74:82:d1:e1:4d:b6:\n"
-        "         48:51:fa:c5:17:59:22:a3:84:be:82:c8:83:ec:61:a0:f4:ee:\n"
-        "         2c:e3:a3:ea:e5:51:c9:d3:4f:db:85:bd:ba:7a:52:14:b6:03:\n"
-        "         ed:43:17:d8:d7:1c:22:5e:c9:56:d9:d6:81:96:11:e3:5e:01:\n"
-        "         40:91:30:09:da:a3:5f:d3:27:60:e5:9d:6c:da:d0:f0:39:01:\n"
-        "         23:4a:a6:15:7a:4a:82:eb:ec:72:4a:1d:36:dc:6f:83:c4:85:\n"
-        "         84:b5:8d:cd:09:e5:12:63:f3:21:56:c8:64:6b:db:b8:cf:d4:\n"
-        "         df:ca:a8:24:8e:df:8d:63:a5:96:84:bf:ff:8b:7e:46:7a:f0:\n"
-        "         c7:73:7c:70:8a:f5:17:d0:ac:c8:89:1e:d7:89:42:0f:4d:66:\n"
-        "         c4:d8:bb:36:a8:ae:ca:e1:cf:e2:88:f6:cf:b0:44:4a:5f:81:\n"
-        "         50:4b:d6:28:81:cd:6c:f0:ec:e6:09:08:f2:59:91:a2:69:ac:\n"
-        "         c7:81:fa:ab:61:3e:db:6f:f6:7f:db:1a:9e:b9:5d:cc:cc:33:\n"
-        "         fa:95:c6:f7:8d:4b:30:f3\n"
+        "         5b:40:71:96:c8:d1:57:3f:fc:f2:3c:75:fb:c9:a6:a7:63:8a:\n"
+        "         22:23:96:0f:40:77:77:e2:7f:76:fc:5f:7b:1c:bd:ea:ca:f0:\n"
+        "         be:1a:fd:59:e6:0e:00:d1:78:44:01:28:f4:01:68:67:78:cf:\n"
+        "         78:43:36:ac:b2:5c:13:0e:2a:94:59:88:9e:64:46:42:0a:9b:\n"
+        "         be:7d:2d:10:11:fe:8b:64:01:fb:00:c5:2e:47:63:c0:93:3a:\n"
+        "         4a:f8:6c:fc:a9:16:58:ab:bc:7b:6b:20:31:9d:d7:d8:84:01:\n"
+        "         cc:ce:52:7f:a1:18:2f:5c:c9:59:58:9a:98:b9:ef:54:d7:a0:\n"
+        "         56:79:28:ba:ad:f5:e5:fd:7e:d8:d6:be:dd:25:76:6f:fa:8a:\n"
+        "         07:f6:8e:0f:83:43:19:ee:96:c4:c9:54:df:19:5a:4c:ae:25:\n"
+        "         57:a2:5d:d5:e8:0a:66:d8:19:e9:c4:44:ba:6a:3b:b3:86:ae:\n"
+        "         44:c0:7c:6e:e5:a0:6c:45:bb:7f:34:94:e9:d3:d4:f4:04:0b:\n"
+        "         eb:fc:9a:fa:67:d4:e5:83:5e:08:09:9c:70:a9:d3:0d:8a:08:\n"
+        "         ed:3c:04:33:4f:ac:02:d9:5c:99:62:12:fc:0e:8d:55:8a:ce:\n"
+        "         ca:28:5a:1a:9e:c9:59:8e:f0:f5:19:c7:30:1e:59:1f:3c:77:\n"
+        "         6d:fc:a2:31:ec:bf:83:fd:14:26:91:68:88:05:4c:87:82:e0:\n"
+        "         33:f4:ee:d8:56:97:23:3a:00:9b:e7:a2:10:c2:83:28:c6:c0:\n"
+        "         c1:92:49:95:c1:d3:e1:43:e8:8f:0c:d0:ae:e3:50:17:1a:8d:\n"
+        "         0f:4a:60:71:76:8e:9e:fb:15:76:cd:cd:69:2c:59:24:69:d2:\n"
+        "         0f:f2:d5:0e:96:95:2b:2e:d7:81:ed:b3:7b:6f:ce:60:32:b5:\n"
+        "         f0:f6:74:ea:27:3a:ee:2c:96:7b:e0:06:6c:33:25:c4:60:da:\n"
+        "         76:de:c4:a1:22:b6:b1:63:57:10:3c:62:60:98:47:39:9e:38:\n"
+        "         ce:c7:ef:75:75:19:d3:26:2a:cf:46:e3:b0:72:38:49:ee:c3:\n"
+        "         4e:52:97:e5:e5:b8:bc:b1:45:56:98:54:0a:63:c8:87:ff:a0:\n"
+        "         cb:28:12:5c:8f:a2:6e:a7:f9:50:98:2d:a5:26:08:df:16:29:\n"
+        "         19:63:7f:6c:b4:41:20:f7:5d:ef:6a:90:fd:1a:08:1c:c2:4c:\n"
+        "         3e:77:ea:e0:df:c0:dd:aa:a2:36:e7:e8:be:98:39:0a:68:59:\n"
+        "         8e:a0:71:2f:7c:92:ab:e0:c4:c1:c2:eb:89:b6:34:ce:44:ab:\n"
+        "         f9:f6:a4:c8:7b:ad:a8:bc:c9:04:7c:d5:4c:a4:d2:8b:54:23:\n"
+        "         89:68:86:4e:07:36:d9:bc\n"
         "-----BEGIN CERTIFICATE-----\n"
-        "MIIGXDCCBESgAwIBAgIJAIIvj+uNBiSwMA0GCSqGSIb3DQEBCwUAMIG6MQswCQYD\n"
+        "MIIGSTCCBDGgAwIBAgIJAO9U2PfaGOgZMA0GCSqGSIb3DQEBCwUAMIG6MQswCQYD\n"
         "VQQGEwJVUzETMBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5j\n"
         "aXNjbzETMBEGA1UECgwKTGluZGVuIExhYjEgMB4GA1UECwwXU2Vjb25kIExpZmUg\n"
         "RW5naW5lZXJpbmcxITAfBgNVBAMMGEludGVncmF0aW9uIFRlc3QgUm9vdCBDQTEk\n"
-        "MCIGCSqGSIb3DQEJARYVbm9yZXBseUBsaW5kZW5sYWIuY29tMB4XDTE4MDUyMjIy\n"
-        "MTk0NVoXDTM4MDUxNzIyMTk0NVowgboxCzAJBgNVBAYTAlVTMRMwEQYDVQQIDApD\n"
+        "MCIGCSqGSIb3DQEJARYVbm9yZXBseUBsaW5kZW5sYWIuY29tMB4XDTI0MDcyMzEx\n"
+        "NDYyNloXDTM0MDcyMTExNDYyNlowgboxCzAJBgNVBAYTAlVTMRMwEQYDVQQIDApD\n"
         "YWxpZm9ybmlhMRYwFAYDVQQHDA1TYW4gRnJhbmNpc2NvMRMwEQYDVQQKDApMaW5k\n"
         "ZW4gTGFiMSAwHgYDVQQLDBdTZWNvbmQgTGlmZSBFbmdpbmVlcmluZzEhMB8GA1UE\n"
         "AwwYSW50ZWdyYXRpb24gVGVzdCBSb290IENBMSQwIgYJKoZIhvcNAQkBFhVub3Jl\n"
         "cGx5QGxpbmRlbmxhYi5jb20wggIiMA0GCSqGSIb3DQEBAQUAA4ICDwAwggIKAoIC\n"
-        "AQC94HndO6ash9A58FjHpEJC9l+TsDYEteLV9yrAbKAT0h4CgVcCUExXt+8nnvbx\n"
-        "8TAwch5XNOU/gjwhxGbSc2NskebdSZ6csTRqgUWhbsRQKPLY4/6AL4OqKJG0jFfJ\n"
-        "8RbZDIc8JYCggY1x8pbiFvGXxLDYU7sTbHNULymUhc+GbnVxrTnj/DkSU5Mczjng\n"
-        "M9pJtz2vsDfOdwkDJzJwwJx/nInOkEWwfZSL/xMnuoh/rsSqc9VHuIdpiYAMwSIY\n"
-        "eMINR9kQ/4B5DUZx7Nm6yfN3/ZJtHw/ZVBht9nIkXFw9Q0k1Phwo3n5E3CnDn2IE\n"
-        "RqrE5mlqFfjjdBwU6fSXfDBs1Cj8Kg4dbTkuHfkXQzVdI+e646jpl2s8PiPv2Lz7\n"
-        "elc3OZNZA/x4yrEx7yYZ7VbhY8OtmYBbR7UDNV/+aqYhY+xQ+07J+a6lZtBVM43m\n"
-        "xVBaxo9cNEWnctpQ9mZMGfXR5PsRi6G1TglDgT05KIY7/gcolwK1OgdfSiCAGn2k\n"
-        "jPds9sWb9mHlx7DD1Vg4e7tHHjTWFlXF0mywk3exkGkGsVPLG4Rxz7iHGx5ENbQr\n"
-        "uwRZWAvok9iuIZuxHIkwrhGAd8wW89Y17aGzcLNPzaFWme4OwACkCXDDWwu+oQcY\n"
-        "3cb0bYtYvPm7SwEs9swsm4cOsU+cEL78ReKk7H78/0W4UwIDAQABo2MwYTAdBgNV\n"
-        "HQ4EFgQUiiLGnC4R80AMzoIMIln/+H/QuRMwHwYDVR0jBBgwFoAUiiLGnC4R80AM\n"
-        "zoIMIln/+H/QuRMwDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8BAf8EBAMCAYYwDQYJ\n"
-        "KoZIhvcNAQELBQADggIBALPLM+sOAmT0VZo9A5rPakwYQ/dCy2XcYVLlny9ClzyT\n"
-        "FiLUr66yD8Ob7+DM7raxaaPY2ibDrTvFZNyf1MJTS5FtxJIJC6zwmb5vuTwDSm2f\n"
-        "AV3sWprzp+U7LJlXfX4lFWggEjCWFob123SQYP6L35n292JJn7yNRSMKyHO4eYA8\n"
-        "ueVyhUuzgWZ0onKSTET9e0YuIaKpgaLzJk3jiX14sMZvtYfL7iXtJx91E/pt6Tdz\n"
-        "rQe7r9Nsh+oCAXC9U6rOOSzUZjkzqtGc7mfjqUXSey5UCa9wXz9aZy5scu/gnZIo\n"
-        "St+6C7cjylsEEUXRUenqyexU+jRGrvzcbPgeLJ70cVGNtaEmmhMwvh5BJVlYBSxk\n"
-        "yPleOK7ck7CK1jh0AsvOzpUxdvZ8v6Shjif9ynSC0eFNtkhR+sUXWSKjhL6CyIPs\n"
-        "YaD07izjo+rlUcnTT9uFvbp6UhS2A+1DF9jXHCJeyVbZ1oGWEeNeAUCRMAnao1/T\n"
-        "J2DlnWza0PA5ASNKphV6SoLr7HJKHTbcb4PEhYS1jc0J5RJj8yFWyGRr27jP1N/K\n"
-        "qCSO341jpZaEv/+LfkZ68MdzfHCK9RfQrMiJHteJQg9NZsTYuzaorsrhz+KI9s+w\n"
-        "REpfgVBL1iiBzWzw7OYJCPJZkaJprMeB+qthPttv9n/bGp65XczMM/qVxveNSzDz\n"
+        "AQDGzAf0CxcGTaYwtMcCa52kR6YJDmAaMtRrQojuxbnp+7ULYNyiRZKlu4gS/EIa\n"
+        "gDJ5FmJ6l6+EKFM8wfJowE5F5Apj+TQdoovMcN/GZcC6MTLSnQzIztwREqQR+tPI\n"
+        "VuIxiuP7kUDaJVXR8nWbTfq4H7Vtm+H+XejEAnkU731aszoettBgLJDcIuLFroUf\n"
+        "tJ16IPivY1YlGmTznD+az2gICjfb0KNlJtuAgv/gG1HI7vatwrTyq9LohYZ3KNBj\n"
+        "SnF4QeOMf3FRMa8kP/qN0NgL4n55M4q70gCeLsjN1VCSuFxaC5nvBTln2r5wNlE3\n"
+        "NyBvhKspEQB7ODK6C7w0prXGp/DAJS04C3JAq8/m/5d1/+KpPCpXzuRSIIze/mjO\n"
+        "VIU3urN/LlNY6puseWsWZbgRiFpG656egDyJkTXgxTNFyIZNJVE5sXKXK7PIyegR\n"
+        "zTJByMFWIn4zgYVhq9qebl8kHA+b+tqdhhpm9jIqEIDqcnpK78DyfEMC5nAZauEC\n"
+        "CgCAURyjA4ttiZ+RN5DW2JxzdwaevJWJZu5DQKPuQ6P2LUPde/AvCxI3SbeBWuJU\n"
+        "bXGI//5+QSU1TLS5YmXdnx96Bm4rIFh42ghmqPGJ3o9/XF7CcjN/to5BTCb2TNQO\n"
+        "EUTaxxT3i3lOUymHFbES6RkrVDPWLn+9QiC+/NectHoK2wIDAQABo1AwTjAdBgNV\n"
+        "HQ4EFgQUTX2uDaVeIlpqjxlhVLNYy3vAvdowHwYDVR0jBBgwFoAUTX2uDaVeIlpq\n"
+        "jxlhVLNYy3vAvdowDAYDVR0TBAUwAwEB/zANBgkqhkiG9w0BAQsFAAOCAgEAW0Bx\n"
+        "lsjRVz/88jx1+8mmp2OKIiOWD0B3d+J/dvxfexy96srwvhr9WeYOANF4RAEo9AFo\n"
+        "Z3jPeEM2rLJcEw4qlFmInmRGQgqbvn0tEBH+i2QB+wDFLkdjwJM6Svhs/KkWWKu8\n"
+        "e2sgMZ3X2IQBzM5Sf6EYL1zJWViamLnvVNegVnkouq315f1+2Na+3SV2b/qKB/aO\n"
+        "D4NDGe6WxMlU3xlaTK4lV6Jd1egKZtgZ6cREumo7s4auRMB8buWgbEW7fzSU6dPU\n"
+        "9AQL6/ya+mfU5YNeCAmccKnTDYoI7TwEM0+sAtlcmWIS/A6NVYrOyihaGp7JWY7w\n"
+        "9RnHMB5ZHzx3bfyiMey/g/0UJpFoiAVMh4LgM/Tu2FaXIzoAm+eiEMKDKMbAwZJJ\n"
+        "lcHT4UPojwzQruNQFxqND0pgcXaOnvsVds3NaSxZJGnSD/LVDpaVKy7Xge2ze2/O\n"
+        "YDK18PZ06ic67iyWe+AGbDMlxGDadt7EoSK2sWNXEDxiYJhHOZ44zsfvdXUZ0yYq\n"
+        "z0bjsHI4Se7DTlKX5eW4vLFFVphUCmPIh/+gyygSXI+ibqf5UJgtpSYI3xYpGWN/\n"
+        "bLRBIPdd72qQ/RoIHMJMPnfq4N/A3aqiNufovpg5CmhZjqBxL3ySq+DEwcLribY0\n"
+        "zkSr+fakyHutqLzJBHzVTKTSi1QjiWiGTgc22bw=\n"
         "-----END CERTIFICATE-----\n"
-                                   );
+    );
+
 
     const std::string mPemIntermediateCert(
         "Certificate:\n"
         "    Data:\n"
         "        Version: 3 (0x2)\n"
-        "        Serial Number: 4096 (0x1000)\n"
+        "        Serial Number: 85:bb:4b:66:26:db:9a:c6\n"
         "    Signature Algorithm: sha256WithRSAEncryption\n"
         "        Issuer: C=US, ST=California, L=San Francisco, O=Linden Lab, OU=Second Life Engineering, CN=Integration Test Root CA/emailAddress=noreply@lindenlab.com\n"
         "        Validity\n"
-        "            Not Before: May 22 22:39:08 2018 GMT\n"
-        "            Not After : May 19 22:39:08 2028 GMT\n"
-        "        Subject: C=US, ST=California, O=Linden Lab, OU=Second Life Engineering, CN=Integration Test Intermediate CA/emailAddress=noreply@lindenlab.com\n"
+        "            Not Before: Jul 23 11:46:33 2024 GMT\n"
+        "            Not After : Jul 21 11:46:33 2034 GMT\n"
+        "        Subject: C=US, ST=California, L=San Francisco, O=Linden Lab, OU=Second Life Engineering, CN=Integration Test Intermediate CA/emailAddress=noreply@lindenlab.com\n"
         "        Subject Public Key Info:\n"
         "            Public Key Algorithm: rsaEncryption\n"
         "                Public-Key: (4096 bit)\n"
         "                Modulus:\n"
-        "                    00:ce:a3:70:e2:c4:fb:4b:97:90:a1:30:bb:c1:1b:\n"
-        "                    13:b9:aa:7e:46:17:a3:26:8d:69:3f:5e:73:95:e8:\n"
-        "                    6a:b1:0a:b4:8f:50:65:e3:c6:5c:39:24:34:df:0b:\n"
-        "                    b7:cc:ce:62:0c:36:5a:12:2c:fe:35:4c:e9:1c:ac:\n"
-        "                    80:5e:24:99:d7:aa:bd:be:48:c0:62:64:77:36:88:\n"
-        "                    66:ce:f4:a8:dd:d2:76:24:62:90:55:41:fc:1d:13:\n"
-        "                    4e:a7:4e:57:bc:a8:a4:59:4b:2c:5a:1c:d8:cc:16:\n"
-        "                    de:e8:88:30:c9:95:df:2f:a6:14:28:0f:eb:34:46:\n"
-        "                    12:58:ba:da:0e:e6:de:9c:15:f6:f4:e3:9f:74:aa:\n"
-        "                    70:89:79:8b:e9:5a:7b:18:54:15:94:3a:23:0a:65:\n"
-        "                    78:05:d9:33:90:2a:ce:15:18:0d:52:fc:5c:31:65:\n"
-        "                    20:d0:12:37:8c:11:80:ba:d4:b0:82:73:00:4b:49:\n"
-        "                    be:cb:d6:bc:e7:cd:61:f3:00:98:99:74:5a:37:81:\n"
-        "                    49:96:7e:14:01:1b:86:d2:d0:06:94:40:63:63:46:\n"
-        "                    11:fc:33:5c:bd:3a:5e:d4:e5:44:47:64:50:bd:a6:\n"
-        "                    97:55:70:64:9b:26:cc:de:20:82:90:6a:83:41:9c:\n"
-        "                    6f:71:47:14:be:cb:68:7c:85:be:ef:2e:76:12:19:\n"
-        "                    d3:c9:87:32:b4:ac:60:20:16:28:2d:af:bc:e8:01:\n"
-        "                    c6:7f:fb:d8:11:d5:f4:b7:14:bd:27:08:5b:72:be:\n"
-        "                    09:e0:91:c8:9c:7b:b4:b3:12:ef:32:36:be:b1:b9:\n"
-        "                    a2:b7:e3:69:47:30:76:ba:9c:9b:19:99:4d:53:dd:\n"
-        "                    5c:e8:2c:f1:b2:64:69:cf:15:bd:f8:bb:58:95:73:\n"
-        "                    58:38:95:b4:7a:cf:84:29:a6:c2:db:f0:bd:ef:97:\n"
-        "                    26:d4:99:ac:d7:c7:be:b0:0d:11:f4:26:86:2d:77:\n"
-        "                    42:52:25:d7:56:c7:e3:97:b1:36:5c:97:71:d0:9b:\n"
-        "                    f5:b5:50:8d:f9:ff:fb:10:77:3c:b5:53:6d:a1:43:\n"
-        "                    35:a9:03:32:05:ab:d7:f5:d1:19:bd:5f:92:a3:00:\n"
-        "                    2a:79:37:a4:76:4f:e9:32:0d:e4:86:bb:ea:c3:1a:\n"
-        "                    c5:33:e8:16:d4:a5:d8:e0:e8:bb:c2:f0:22:15:e2:\n"
-        "                    d9:8c:ae:ac:7d:2b:bf:eb:a3:4c:3b:29:1d:94:ac:\n"
-        "                    a3:bb:6d:ba:6d:03:91:03:cf:46:12:c4:66:21:c5:\n"
-        "                    c6:67:d8:11:19:79:01:0e:6e:84:1c:76:6f:11:3d:\n"
-        "                    eb:94:89:c5:6a:26:1f:cd:e0:11:8b:51:ee:99:35:\n"
-        "                    69:e5:7f:0b:77:2a:94:e4:4b:64:b9:83:04:30:05:\n"
-        "                    e4:a2:e3\n"
+        "                    00:be:f7:d2:cb:e4:5c:46:7b:e2:11:22:89:72:da:\n"
+        "                    77:72:ec:05:87:19:f7:77:07:fd:67:d7:af:13:d5:\n"
+        "                    76:12:92:dd:69:4d:22:47:b0:3d:94:8a:6a:95:85:\n"
+        "                    34:b8:78:c3:9d:63:32:b1:4b:0a:b6:0e:05:7b:ab:\n"
+        "                    06:23:fc:0d:21:b5:fc:c6:6a:5a:36:be:6e:fc:c7:\n"
+        "                    47:97:a3:18:2e:33:cd:0e:8a:75:2b:b7:29:e9:68:\n"
+        "                    4a:90:53:45:db:73:ff:b3:e5:c1:d4:6b:dd:3a:b1:\n"
+        "                    ef:53:9f:23:e9:c6:87:ce:67:b9:fb:a4:d5:76:21:\n"
+        "                    03:cb:c5:72:6b:c5:a6:07:55:fb:47:90:e8:92:38:\n"
+        "                    73:14:11:8e:ff:21:b9:35:64:5a:61:c7:fc:1f:e4:\n"
+        "                    4d:47:e5:03:cc:0b:c3:69:66:71:84:0c:18:2f:61:\n"
+        "                    7f:34:dd:f2:91:e3:b7:9d:a8:b8:db:3f:6e:6f:96:\n"
+        "                    fa:34:06:82:04:c8:18:cc:de:8b:7f:26:b5:48:53:\n"
+        "                    fb:fb:15:7b:0e:38:60:fe:da:21:98:8d:73:07:b2:\n"
+        "                    6b:fd:ad:21:59:e7:84:66:e1:04:16:1c:be:13:34:\n"
+        "                    28:43:2c:09:3d:e4:77:2a:a4:ad:6d:f9:26:04:f7:\n"
+        "                    43:73:9b:d9:ea:1a:43:6a:b4:db:88:f8:f9:bd:34:\n"
+        "                    f8:a6:e8:7a:ab:b4:b2:e1:29:47:a6:ba:b8:65:9c:\n"
+        "                    c6:b3:af:13:43:38:ef:2a:05:77:9f:8f:f0:0c:56:\n"
+        "                    21:c2:92:d2:2c:c3:32:50:d1:62:ae:51:fc:99:e6:\n"
+        "                    b8:38:f8:83:1d:8d:40:11:e0:1d:51:5d:3f:fa:55:\n"
+        "                    61:b6:18:09:1e:71:af:95:64:9c:ea:c6:11:64:f0:\n"
+        "                    a8:02:7d:bb:c8:54:2e:57:48:32:7c:51:66:0d:d6:\n"
+        "                    3e:0e:ed:5e:30:a8:a6:47:03:64:5c:89:21:45:90:\n"
+        "                    e1:4c:91:bc:bd:81:6e:73:a9:14:27:e6:0d:6d:38:\n"
+        "                    dc:50:9d:b2:56:66:60:6c:66:b9:5d:bb:8c:96:2d:\n"
+        "                    89:5e:0d:2b:ed:b8:03:31:ce:0a:ff:82:03:f5:b2:\n"
+        "                    3b:e5:27:de:61:d8:8f:bf:a2:6a:64:b0:4a:87:23:\n"
+        "                    40:28:a3:f1:ec:96:50:cd:83:50:2d:78:71:92:f2:\n"
+        "                    88:75:b0:9d:cd:0b:e4:62:a6:a5:63:11:fc:b4:ba:\n"
+        "                    9f:c6:67:40:2c:ad:a4:ef:94:f0:f9:a0:ba:e1:52:\n"
+        "                    2e:27:d9:6b:1d:82:23:ed:3c:0b:0b:d2:bc:14:be:\n"
+        "                    6d:b1:69:ad:3e:25:3a:66:d2:d1:af:9f:88:45:25:\n"
+        "                    6b:6e:be:1f:a0:e7:b2:9f:6d:24:94:0d:f4:c2:75:\n"
+        "                    f9:1f:5d\n"
         "                Exponent: 65537 (0x10001)\n"
         "        X509v3 extensions:\n"
-        "            X509v3 Subject Key Identifier: \n"
-        "                83:21:DE:EC:C0:79:03:6D:1E:83:F3:E5:97:29:D5:5A:C0:96:40:FA\n"
-        "            X509v3 Authority Key Identifier: \n"
-        "                keyid:8A:22:C6:9C:2E:11:F3:40:0C:CE:82:0C:22:59:FF:F8:7F:D0:B9:13\n"
-        "\n"
-        "            X509v3 Basic Constraints: critical\n"
+        "            X509v3 Basic Constraints:\n"
         "                CA:TRUE, pathlen:0\n"
-        "            X509v3 Key Usage: critical\n"
+        "            X509v3 Key Usage:\n"
         "                Digital Signature, Certificate Sign, CRL Sign\n"
+        "            X509v3 Subject Key Identifier:\n"
+        "                56:98:DC:45:25:11:E2:8C:2B:EA:D6:C6:E2:C8:BE:2C:C8:69:FF:FF\n"
+        "            X509v3 Authority Key Identifier:\n"
+        "                keyid:4D:7D:AE:0D:A5:5E:22:5A:6A:8F:19:61:54:B3:58:CB:7B:C0:BD:DA\n"
+        "                DirName:/C=US/ST=California/L=San Francisco/O=Linden Lab/OU=Second Life Engineering/CN=Integration Test Root CA/emailAddress=noreply@lindenlab.com\n"
+        "                serial:EF:54:D8:F7:DA:18:E8:19\n"
         "    Signature Algorithm: sha256WithRSAEncryption\n"
-        "         a3:6c:85:9a:2e:4e:7e:5d:83:63:0f:f5:4f:a9:7d:ec:0e:6f:\n"
-        "         ae:d7:ba:df:64:e0:46:0e:3d:da:18:15:2c:f3:73:ca:81:b1:\n"
-        "         10:d9:53:14:21:7d:72:5c:94:88:a5:9d:ad:ab:45:42:c6:64:\n"
-        "         a9:d9:2e:4e:29:47:2c:b1:95:07:b7:62:48:68:1f:68:13:1c:\n"
-        "         d2:a0:fb:5e:38:24:4a:82:0a:87:c9:93:20:43:7e:e9:f9:79:\n"
-        "         ef:03:a2:bd:9e:24:6b:0a:01:5e:4a:36:c5:7d:7a:fe:d6:aa:\n"
-        "         2f:c2:8c:38:8a:99:3c:b0:6a:e5:60:be:56:d6:eb:60:03:55:\n"
-        "         24:42:a0:1a:fa:91:24:a3:53:15:75:5d:c8:eb:7c:1e:68:5a:\n"
-        "         7e:13:34:e3:85:37:1c:76:3f:77:67:1b:ed:1b:52:17:fc:4a:\n"
-        "         a3:e2:74:84:80:2c:69:fc:dd:7d:26:97:c4:2a:69:7d:9c:dc:\n"
-        "         61:97:70:29:a7:3f:2b:5b:2b:22:51:fd:fe:6a:5d:f9:e7:14:\n"
-        "         48:b7:2d:c8:33:58:fc:f2:5f:27:f7:26:16:be:be:b5:aa:a2:\n"
-        "         64:53:3c:69:e8:b5:61:eb:ab:91:a5:b4:09:9b:f6:98:b8:5c:\n"
-        "         5b:24:2f:93:f5:2b:9c:8c:58:fb:26:3f:67:53:d7:42:64:e8:\n"
-        "         79:77:73:41:4e:e3:02:39:0b:b6:68:97:8b:84:e8:1d:83:a8:\n"
-        "         15:f1:06:46:47:80:42:5e:14:e2:61:8a:76:84:d5:d4:71:7f:\n"
-        "         4e:ff:d9:74:87:ff:32:c5:87:20:0a:d4:59:40:3e:d8:17:ef:\n"
-        "         da:65:e9:0a:51:fe:1e:c3:46:91:d2:ee:e4:23:57:97:87:d4:\n"
-        "         a6:a5:eb:ef:81:6a:d8:8c:d6:1f:8e:b1:18:4c:6b:89:32:55:\n"
-        "         53:68:26:9e:bb:03:be:2c:e9:8b:ff:97:9c:1c:ac:28:c3:9f:\n"
-        "         0b:b7:93:23:24:31:63:e4:19:13:f2:bb:08:71:b7:c5:c5:c4:\n"
-        "         10:ff:dc:fc:33:54:a4:5e:ec:a3:fe:0a:80:ca:9c:bc:95:6f:\n"
-        "         5f:39:91:3b:61:69:16:94:0f:57:4b:fc:4b:b1:be:72:98:5d:\n"
-        "         10:f9:08:a7:d6:e0:e8:3d:5d:54:7d:fa:4b:6a:dd:98:41:ed:\n"
-        "         84:a1:39:67:5c:6c:7f:0c:b0:e1:98:c1:14:ed:fe:1e:e8:05:\n"
-        "         8d:7f:6a:24:cb:1b:05:42:0d:7f:13:ba:ca:b5:91:db:a5:f0:\n"
-        "         40:2b:70:7a:2a:a5:5d:ed:56:0c:f0:c2:72:ee:63:dd:cb:5d:\n"
-        "         76:f6:08:e6:e6:30:ef:3a:b2:16:34:41:a4:e1:30:14:bc:c7:\n"
-        "         f9:23:3a:1a:70:df:b8:cc\n"
+        "         ae:d0:30:ac:31:49:20:86:0b:34:01:58:08:94:68:cc:38:9c:\n"
+        "         f7:13:5c:46:19:33:ed:54:5e:e4:43:f3:59:33:5c:50:d9:89:\n"
+        "         8b:ee:75:67:a8:c7:0e:d1:30:c2:4e:a3:2e:a8:64:2d:6a:a8:\n"
+        "         f4:bd:b1:32:dc:bc:46:48:5d:1a:18:d8:e8:0b:8c:fe:7b:51:\n"
+        "         d9:dd:b9:e3:4b:d1:f9:e0:22:46:dd:37:5b:b2:cb:72:8e:9c:\n"
+        "         4b:da:67:df:fd:ce:86:49:21:31:4e:99:b6:d4:38:0b:14:5d:\n"
+        "         ad:97:ba:8f:e2:08:15:85:73:eb:4a:7d:01:49:af:63:ae:2d:\n"
+        "         e3:9d:0a:d7:11:c2:03:d3:15:21:97:be:3d:d2:ea:ab:cc:93:\n"
+        "         16:98:64:80:72:eb:c2:78:0a:09:69:c4:2b:5d:df:30:7b:be:\n"
+        "         9b:02:34:73:62:9f:95:b1:cf:08:e8:9e:57:a8:37:31:cf:2c:\n"
+        "         8c:18:b1:d5:7a:25:90:d6:b6:76:28:1b:e2:b1:cf:1b:f1:ef:\n"
+        "         dd:2f:d3:07:af:81:e3:5f:fc:5a:e7:3c:a9:37:0d:9c:78:5b:\n"
+        "         58:dc:89:54:70:a4:5b:ff:9f:64:30:a3:85:12:32:69:a5:02:\n"
+        "         73:d9:1d:ff:69:1f:d4:97:8f:d0:a8:90:8c:dd:2e:45:a1:b1:\n"
+        "         e3:8a:82:fc:fc:08:41:01:51:92:87:9a:09:7b:35:c3:cc:48:\n"
+        "         81:39:30:a9:f4:41:3b:06:a3:06:21:cc:4b:bc:1b:76:58:94:\n"
+        "         d1:e4:22:70:7f:20:7e:7a:b4:fa:7f:e8:79:c1:8c:89:9e:e9:\n"
+        "         e3:72:2a:43:72:47:9e:bb:26:ed:64:2c:c8:54:f7:b4:95:c2:\n"
+        "         c4:e9:8b:df:d5:10:a7:ed:a5:7a:94:97:c4:76:45:e3:6c:c0:\n"
+        "         0e:a6:2a:76:d5:1d:2f:ad:99:32:c6:7b:f6:41:e0:65:37:0f:\n"
+        "         c0:1f:c5:99:4a:75:fd:6c:e0:f1:f0:58:49:2d:81:10:ca:d8:\n"
+        "         eb:2b:c3:9b:a9:d9:a9:f5:6c:6d:26:fd:b8:32:92:58:f4:65:\n"
+        "         0b:d1:8e:03:1e:d5:6a:95:d4:46:9e:65:dd:e5:85:36:e6:31:\n"
+        "         77:3a:1a:20:2b:07:b7:f1:9a:4e:8d:54:22:5a:54:1c:72:5c:\n"
+        "         1f:b4:1a:5b:21:ed:06:5a:9a:e5:3c:01:c9:9b:af:50:61:f2:\n"
+        "         29:6b:ec:6d:19:bb:2e:02:94:ca:36:71:ef:45:39:f1:a5:25:\n"
+        "         10:0e:90:bc:a7:b3:5b:ab:af:f1:19:88:6a:09:2f:1f:d0:24:\n"
+        "         a8:62:ed:d9:1a:65:89:65:16:a5:55:de:33:e8:7a:81:66:72:\n"
+        "         91:17:5e:1d:22:72:f7:b8\n"
         "-----BEGIN CERTIFICATE-----\n"
-        "MIIGSDCCBDCgAwIBAgICEAAwDQYJKoZIhvcNAQELBQAwgboxCzAJBgNVBAYTAlVT\n"
-        "MRMwEQYDVQQIDApDYWxpZm9ybmlhMRYwFAYDVQQHDA1TYW4gRnJhbmNpc2NvMRMw\n"
-        "EQYDVQQKDApMaW5kZW4gTGFiMSAwHgYDVQQLDBdTZWNvbmQgTGlmZSBFbmdpbmVl\n"
-        "cmluZzEhMB8GA1UEAwwYSW50ZWdyYXRpb24gVGVzdCBSb290IENBMSQwIgYJKoZI\n"
-        "hvcNAQkBFhVub3JlcGx5QGxpbmRlbmxhYi5jb20wHhcNMTgwNTIyMjIzOTA4WhcN\n"
-        "MjgwNTE5MjIzOTA4WjCBqjELMAkGA1UEBhMCVVMxEzARBgNVBAgMCkNhbGlmb3Ju\n"
-        "aWExEzARBgNVBAoMCkxpbmRlbiBMYWIxIDAeBgNVBAsMF1NlY29uZCBMaWZlIEVu\n"
-        "Z2luZWVyaW5nMSkwJwYDVQQDDCBJbnRlZ3JhdGlvbiBUZXN0IEludGVybWVkaWF0\n"
-        "ZSBDQTEkMCIGCSqGSIb3DQEJARYVbm9yZXBseUBsaW5kZW5sYWIuY29tMIICIjAN\n"
-        "BgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAzqNw4sT7S5eQoTC7wRsTuap+Rhej\n"
-        "Jo1pP15zlehqsQq0j1Bl48ZcOSQ03wu3zM5iDDZaEiz+NUzpHKyAXiSZ16q9vkjA\n"
-        "YmR3NohmzvSo3dJ2JGKQVUH8HRNOp05XvKikWUssWhzYzBbe6IgwyZXfL6YUKA/r\n"
-        "NEYSWLraDubenBX29OOfdKpwiXmL6Vp7GFQVlDojCmV4BdkzkCrOFRgNUvxcMWUg\n"
-        "0BI3jBGAutSwgnMAS0m+y9a8581h8wCYmXRaN4FJln4UARuG0tAGlEBjY0YR/DNc\n"
-        "vTpe1OVER2RQvaaXVXBkmybM3iCCkGqDQZxvcUcUvstofIW+7y52EhnTyYcytKxg\n"
-        "IBYoLa+86AHGf/vYEdX0txS9Jwhbcr4J4JHInHu0sxLvMja+sbmit+NpRzB2upyb\n"
-        "GZlNU91c6CzxsmRpzxW9+LtYlXNYOJW0es+EKabC2/C975cm1Jms18e+sA0R9CaG\n"
-        "LXdCUiXXVsfjl7E2XJdx0Jv1tVCN+f/7EHc8tVNtoUM1qQMyBavX9dEZvV+SowAq\n"
-        "eTekdk/pMg3khrvqwxrFM+gW1KXY4Oi7wvAiFeLZjK6sfSu/66NMOykdlKyju226\n"
-        "bQORA89GEsRmIcXGZ9gRGXkBDm6EHHZvET3rlInFaiYfzeARi1HumTVp5X8LdyqU\n"
-        "5EtkuYMEMAXkouMCAwEAAaNmMGQwHQYDVR0OBBYEFIMh3uzAeQNtHoPz5Zcp1VrA\n"
-        "lkD6MB8GA1UdIwQYMBaAFIoixpwuEfNADM6CDCJZ//h/0LkTMBIGA1UdEwEB/wQI\n"
-        "MAYBAf8CAQAwDgYDVR0PAQH/BAQDAgGGMA0GCSqGSIb3DQEBCwUAA4ICAQCjbIWa\n"
-        "Lk5+XYNjD/VPqX3sDm+u17rfZOBGDj3aGBUs83PKgbEQ2VMUIX1yXJSIpZ2tq0VC\n"
-        "xmSp2S5OKUcssZUHt2JIaB9oExzSoPteOCRKggqHyZMgQ37p+XnvA6K9niRrCgFe\n"
-        "SjbFfXr+1qovwow4ipk8sGrlYL5W1utgA1UkQqAa+pEko1MVdV3I63weaFp+EzTj\n"
-        "hTccdj93ZxvtG1IX/Eqj4nSEgCxp/N19JpfEKml9nNxhl3Appz8rWysiUf3+al35\n"
-        "5xRIty3IM1j88l8n9yYWvr61qqJkUzxp6LVh66uRpbQJm/aYuFxbJC+T9SucjFj7\n"
-        "Jj9nU9dCZOh5d3NBTuMCOQu2aJeLhOgdg6gV8QZGR4BCXhTiYYp2hNXUcX9O/9l0\n"
-        "h/8yxYcgCtRZQD7YF+/aZekKUf4ew0aR0u7kI1eXh9SmpevvgWrYjNYfjrEYTGuJ\n"
-        "MlVTaCaeuwO+LOmL/5ecHKwow58Lt5MjJDFj5BkT8rsIcbfFxcQQ/9z8M1SkXuyj\n"
-        "/gqAypy8lW9fOZE7YWkWlA9XS/xLsb5ymF0Q+Qin1uDoPV1UffpLat2YQe2EoTln\n"
-        "XGx/DLDhmMEU7f4e6AWNf2okyxsFQg1/E7rKtZHbpfBAK3B6KqVd7VYM8MJy7mPd\n"
-        "y1129gjm5jDvOrIWNEGk4TAUvMf5IzoacN+4zA==\n"
+        "MIIHNjCCBR6gAwIBAgIJAIW7S2Ym25rGMA0GCSqGSIb3DQEBCwUAMIG6MQswCQYD\n"
+        "VQQGEwJVUzETMBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5j\n"
+        "aXNjbzETMBEGA1UECgwKTGluZGVuIExhYjEgMB4GA1UECwwXU2Vjb25kIExpZmUg\n"
+        "RW5naW5lZXJpbmcxITAfBgNVBAMMGEludGVncmF0aW9uIFRlc3QgUm9vdCBDQTEk\n"
+        "MCIGCSqGSIb3DQEJARYVbm9yZXBseUBsaW5kZW5sYWIuY29tMB4XDTI0MDcyMzEx\n"
+        "NDYzM1oXDTM0MDcyMTExNDYzM1owgcIxCzAJBgNVBAYTAlVTMRMwEQYDVQQIDApD\n"
+        "YWxpZm9ybmlhMRYwFAYDVQQHDA1TYW4gRnJhbmNpc2NvMRMwEQYDVQQKDApMaW5k\n"
+        "ZW4gTGFiMSAwHgYDVQQLDBdTZWNvbmQgTGlmZSBFbmdpbmVlcmluZzEpMCcGA1UE\n"
+        "AwwgSW50ZWdyYXRpb24gVGVzdCBJbnRlcm1lZGlhdGUgQ0ExJDAiBgkqhkiG9w0B\n"
+        "CQEWFW5vcmVwbHlAbGluZGVubGFiLmNvbTCCAiIwDQYJKoZIhvcNAQEBBQADggIP\n"
+        "ADCCAgoCggIBAL730svkXEZ74hEiiXLad3LsBYcZ93cH/WfXrxPVdhKS3WlNIkew\n"
+        "PZSKapWFNLh4w51jMrFLCrYOBXurBiP8DSG1/MZqWja+bvzHR5ejGC4zzQ6KdSu3\n"
+        "KeloSpBTRdtz/7PlwdRr3Tqx71OfI+nGh85nufuk1XYhA8vFcmvFpgdV+0eQ6JI4\n"
+        "cxQRjv8huTVkWmHH/B/kTUflA8wLw2lmcYQMGC9hfzTd8pHjt52ouNs/bm+W+jQG\n"
+        "ggTIGMzei38mtUhT+/sVew44YP7aIZiNcweya/2tIVnnhGbhBBYcvhM0KEMsCT3k\n"
+        "dyqkrW35JgT3Q3Ob2eoaQ2q024j4+b00+Kboequ0suEpR6a6uGWcxrOvE0M47yoF\n"
+        "d5+P8AxWIcKS0izDMlDRYq5R/JnmuDj4gx2NQBHgHVFdP/pVYbYYCR5xr5VknOrG\n"
+        "EWTwqAJ9u8hULldIMnxRZg3WPg7tXjCopkcDZFyJIUWQ4UyRvL2BbnOpFCfmDW04\n"
+        "3FCdslZmYGxmuV27jJYtiV4NK+24AzHOCv+CA/WyO+Un3mHYj7+iamSwSocjQCij\n"
+        "8eyWUM2DUC14cZLyiHWwnc0L5GKmpWMR/LS6n8ZnQCytpO+U8PmguuFSLifZax2C\n"
+        "I+08CwvSvBS+bbFprT4lOmbS0a+fiEUla26+H6Dnsp9tJJQN9MJ1+R9dAgMBAAGj\n"
+        "ggEzMIIBLzAPBgNVHRMECDAGAQH/AgEAMAsGA1UdDwQEAwIBhjAdBgNVHQ4EFgQU\n"
+        "VpjcRSUR4owr6tbG4si+LMhp//8wge8GA1UdIwSB5zCB5IAUTX2uDaVeIlpqjxlh\n"
+        "VLNYy3vAvdqhgcCkgb0wgboxCzAJBgNVBAYTAlVTMRMwEQYDVQQIDApDYWxpZm9y\n"
+        "bmlhMRYwFAYDVQQHDA1TYW4gRnJhbmNpc2NvMRMwEQYDVQQKDApMaW5kZW4gTGFi\n"
+        "MSAwHgYDVQQLDBdTZWNvbmQgTGlmZSBFbmdpbmVlcmluZzEhMB8GA1UEAwwYSW50\n"
+        "ZWdyYXRpb24gVGVzdCBSb290IENBMSQwIgYJKoZIhvcNAQkBFhVub3JlcGx5QGxp\n"
+        "bmRlbmxhYi5jb22CCQDvVNj32hjoGTANBgkqhkiG9w0BAQsFAAOCAgEArtAwrDFJ\n"
+        "IIYLNAFYCJRozDic9xNcRhkz7VRe5EPzWTNcUNmJi+51Z6jHDtEwwk6jLqhkLWqo\n"
+        "9L2xMty8RkhdGhjY6AuM/ntR2d2540vR+eAiRt03W7LLco6cS9pn3/3OhkkhMU6Z\n"
+        "ttQ4CxRdrZe6j+IIFYVz60p9AUmvY64t450K1xHCA9MVIZe+PdLqq8yTFphkgHLr\n"
+        "wngKCWnEK13fMHu+mwI0c2KflbHPCOieV6g3Mc8sjBix1XolkNa2digb4rHPG/Hv\n"
+        "3S/TB6+B41/8Wuc8qTcNnHhbWNyJVHCkW/+fZDCjhRIyaaUCc9kd/2kf1JeP0KiQ\n"
+        "jN0uRaGx44qC/PwIQQFRkoeaCXs1w8xIgTkwqfRBOwajBiHMS7wbdliU0eQicH8g\n"
+        "fnq0+n/oecGMiZ7p43IqQ3JHnrsm7WQsyFT3tJXCxOmL39UQp+2lepSXxHZF42zA\n"
+        "DqYqdtUdL62ZMsZ79kHgZTcPwB/FmUp1/Wzg8fBYSS2BEMrY6yvDm6nZqfVsbSb9\n"
+        "uDKSWPRlC9GOAx7VapXURp5l3eWFNuYxdzoaICsHt/GaTo1UIlpUHHJcH7QaWyHt\n"
+        "Blqa5TwByZuvUGHyKWvsbRm7LgKUyjZx70U58aUlEA6QvKezW6uv8RmIagkvH9Ak\n"
+        "qGLt2RpliWUWpVXeM+h6gWZykRdeHSJy97g=\n"
         "-----END CERTIFICATE-----\n"
-                                           );
+    );
 
     const std::string mPemChildCert(
         "Certificate:\n"
         "    Data:\n"
         "        Version: 3 (0x2)\n"
-        "        Serial Number: 4096 (0x1000)\n"
+        "        Serial Number: 9e:8d:34:13:e7:9b:f9:31\n"
         "    Signature Algorithm: sha256WithRSAEncryption\n"
-        "        Issuer: C=US, ST=California, O=Linden Lab, OU=Second Life Engineering, CN=Integration Test Intermediate CA/emailAddress=noreply@lindenlab.com\n"
+        "        Issuer: C=US, ST=California, L=San Francisco, O=Linden Lab, OU=Second Life Engineering, CN=Integration Test Intermediate CA/emailAddress=noreply@lindenlab.com\n"
         "        Validity\n"
-        "            Not Before: May 22 22:58:15 2018 GMT\n"
-        "            Not After : Jul 19 22:58:15 2024 GMT\n"
+        "            Not Before: Jul 23 11:46:39 2024 GMT\n"
+        "            Not After : Jul 21 11:46:39 2034 GMT\n"
         "        Subject: C=US, ST=California, L=San Francisco, O=Linden Lab, OU=Second Life Engineering, CN=Integration Test Server Cert/emailAddress=noreply@lindenlab.com\n"
         "        Subject Public Key Info:\n"
         "            Public Key Algorithm: rsaEncryption\n"
-        "                Public-Key: (2048 bit)\n"
+        "                Public-Key: (4096 bit)\n"
         "                Modulus:\n"
-        "                    00:bf:a1:1c:76:82:4a:10:1d:25:0e:02:e2:7a:64:\n"
-        "                    54:c7:94:c5:c0:98:d5:35:f3:cb:cb:30:ba:31:9c:\n"
-        "                    bd:4c:2f:4a:4e:24:03:4b:87:5c:c1:5c:fe:d9:89:\n"
-        "                    3b:cb:01:bc:eb:a5:b7:78:dc:b3:58:e5:78:a7:15:\n"
-        "                    34:50:30:aa:16:3a:b2:94:17:6d:1e:7f:b2:70:1e:\n"
-        "                    96:41:bb:1d:e3:22:80:fa:dc:00:6a:fb:34:3e:67:\n"
-        "                    e7:c2:21:2f:1b:d3:af:04:49:91:eb:bb:60:e0:26:\n"
-        "                    52:75:28:8a:08:5b:91:56:4e:51:50:40:51:70:af:\n"
-        "                    cb:80:66:c8:59:e9:e2:48:a8:62:d0:26:67:80:0a:\n"
-        "                    12:16:d1:f6:15:9e:1f:f5:92:37:f3:c9:2f:03:9e:\n"
-        "                    22:f6:60:5a:76:45:8c:01:2c:99:54:72:19:db:b7:\n"
-        "                    72:e6:5a:69:f3:e9:31:65:5d:0f:c7:5c:9c:17:29:\n"
-        "                    71:14:7f:db:47:c9:1e:65:a2:41:b0:2f:14:17:ec:\n"
-        "                    4b:25:f2:43:8f:b4:a3:8d:37:1a:07:34:b3:29:bb:\n"
-        "                    8a:44:8e:84:08:a2:1b:76:7a:cb:c2:39:2f:6e:e3:\n"
-        "                    fc:d6:91:b5:1f:ce:58:91:57:70:35:6e:25:a9:48:\n"
-        "                    0e:07:cf:4e:dd:16:42:65:cf:8a:42:b3:27:e6:fe:\n"
-        "                    6a:e3\n"
+        "                    00:d8:ac:0c:27:8f:ea:c0:4d:21:e4:75:55:31:57:\n"
+        "                    83:46:47:14:1e:f5:67:ae:98:60:c4:97:6d:e8:53:\n"
+        "                    f2:4d:3b:ec:6f:08:bc:1e:c0:e2:a6:75:b5:90:1d:\n"
+        "                    30:a2:59:68:32:10:2b:29:67:fc:99:f1:24:6a:36:\n"
+        "                    73:60:31:6b:c7:a0:b8:b0:38:60:b1:59:23:2c:ab:\n"
+        "                    25:a2:c8:b0:bc:2c:c6:d7:4c:87:37:1b:5e:51:a4:\n"
+        "                    63:3e:c4:6d:ed:da:5e:d3:ad:8a:6d:52:e4:87:38:\n"
+        "                    33:76:cf:f2:86:58:b3:10:a4:91:8d:3d:4f:27:9a:\n"
+        "                    8b:b4:d7:67:90:31:1c:f5:7f:78:af:6f:f2:dd:39:\n"
+        "                    d0:16:16:7b:46:ad:88:1b:3b:74:6b:10:29:8b:64:\n"
+        "                    ba:ed:9f:a7:69:99:55:8f:73:0d:18:a3:7f:40:20:\n"
+        "                    3a:41:4a:94:39:62:8b:fe:c6:9d:79:d0:cd:1c:e2:\n"
+        "                    d4:74:bb:43:75:eb:86:8b:30:c1:8d:cc:14:ab:75:\n"
+        "                    2e:f5:3e:0c:05:cb:e4:c3:92:d8:81:8c:df:a5:4e:\n"
+        "                    2e:0b:ae:17:15:9b:e6:dd:9e:16:46:42:27:92:8a:\n"
+        "                    0e:3a:74:1e:d1:3f:ee:7e:a5:d7:ec:1c:63:d4:96:\n"
+        "                    5b:36:f9:15:ee:da:66:ac:5e:de:91:d9:08:24:fb:\n"
+        "                    5d:fc:9b:77:dd:ff:20:a6:67:6f:48:41:5e:5a:ac:\n"
+        "                    13:a4:2c:2a:f2:a3:15:86:e2:84:33:34:e3:91:27:\n"
+        "                    8b:37:ba:b0:c7:5e:1a:0d:b9:f2:4e:0c:55:e6:bb:\n"
+        "                    d9:63:f5:05:7b:aa:19:e5:57:ce:a5:b1:46:4b:b3:\n"
+        "                    04:f6:a0:97:26:ed:48:ed:97:93:a6:75:b1:a3:42:\n"
+        "                    fc:cc:57:89:da:44:e9:16:a6:30:2c:01:8e:f2:ed:\n"
+        "                    be:45:05:08:8a:af:1e:07:51:89:cf:51:4c:aa:f3:\n"
+        "                    b3:f0:6f:db:21:80:11:32:0a:23:e2:ff:cc:59:15:\n"
+        "                    eb:ff:d2:b8:d6:a1:c1:b4:96:12:82:bf:3f:68:ad:\n"
+        "                    c8:61:50:f8:88:4f:d0:be:8e:29:64:1a:16:a5:d9:\n"
+        "                    29:76:16:cd:70:37:c4:f2:1f:4e:c6:57:36:dd:c1:\n"
+        "                    27:19:72:ef:98:7e:34:25:3f:76:b1:ea:15:b2:38:\n"
+        "                    6e:d3:43:03:7a:2b:78:91:9a:19:26:2a:31:b7:5e:\n"
+        "                    b7:22:c4:fd:bf:93:10:a4:23:3f:d7:79:53:28:5d:\n"
+        "                    2e:ba:0c:b0:5e:0a:b4:c4:a1:71:75:88:1b:b2:0e:\n"
+        "                    2c:67:08:7b:f0:f6:37:d3:aa:39:50:03:a3:7c:17:\n"
+        "                    1d:52:52:2a:6b:d0:a2:54:2e:ba:11:bc:26:a9:16:\n"
+        "                    a6:1b:79\n"
         "                Exponent: 65537 (0x10001)\n"
         "        X509v3 extensions:\n"
-        "            X509v3 Basic Constraints: \n"
+        "            X509v3 Basic Constraints:\n"
         "                CA:FALSE\n"
-        "            Netscape Cert Type: \n"
-        "                SSL Server\n"
-        "            Netscape Comment: \n"
-        "                OpenSSL Generated Server Certificate\n"
-        "            X509v3 Subject Key Identifier: \n"
-        "                BB:59:9F:DE:6B:51:A7:6C:B3:6D:5B:8B:42:F7:B1:65:77:17:A4:E4\n"
-        "            X509v3 Authority Key Identifier: \n"
-        "                keyid:83:21:DE:EC:C0:79:03:6D:1E:83:F3:E5:97:29:D5:5A:C0:96:40:FA\n"
-        "                DirName:/C=US/ST=California/L=San Francisco/O=Linden Lab/OU=Second Life Engineering/CN=Integration Test Root CA/emailAddress=noreply@lindenlab.com\n"
-        "                serial:10:00\n"
-        "\n"
-        "            X509v3 Key Usage: critical\n"
+        "            X509v3 Key Usage:\n"
         "                Digital Signature, Key Encipherment\n"
-        "            X509v3 Extended Key Usage: \n"
+        "            X509v3 Extended Key Usage:\n"
         "                TLS Web Server Authentication\n"
+        "            X509v3 Subject Key Identifier:\n"
+        "                7B:1A:F9:2B:C4:B2:F6:AE:D6:F2:8E:B1:73:FB:DD:11:CA:DB:F8:87\n"
+        "            X509v3 Authority Key Identifier:\n"
+        "                keyid:56:98:DC:45:25:11:E2:8C:2B:EA:D6:C6:E2:C8:BE:2C:C8:69:FF:FF\n"
+        "                DirName:/C=US/ST=California/L=San Francisco/O=Linden Lab/OU=Second Life Engineering/CN=Integration Test Root CA/emailAddress=noreply@lindenlab.com\n"
+        "                serial:85:BB:4B:66:26:DB:9A:C6\n"
         "    Signature Algorithm: sha256WithRSAEncryption\n"
-        "         18:a6:58:55:9b:d4:af:7d:8a:27:d3:28:3a:4c:4b:42:4e:f0:\n"
-        "         30:d6:d9:95:11:48:12:0a:96:40:d9:2b:21:39:c5:d4:8d:e5:\n"
-        "         10:bc:68:78:69:0b:9f:15:4a:0b:f1:ab:99:45:0c:20:5f:27:\n"
-        "         df:e7:14:2d:4a:30:f2:c2:8d:37:73:36:1a:27:55:5a:08:5f:\n"
-        "         71:a1:5e:05:83:b2:59:fe:02:5e:d7:4a:30:15:23:58:04:cf:\n"
-        "         48:cc:b0:71:88:9c:6b:57:f0:04:0a:d3:a0:64:6b:ee:f3:5f:\n"
-        "         ea:ac:e1:2b:b9:7f:79:b8:db:ce:72:48:72:db:c8:5c:38:72:\n"
-        "         31:55:d0:ff:6b:bd:73:23:a7:30:18:5d:ed:47:18:0a:67:8e:\n"
-        "         53:32:0e:99:9b:96:72:45:7f:c6:00:2c:5d:1a:97:53:75:3a:\n"
-        "         0b:49:3d:3a:00:37:14:67:0c:28:97:34:87:aa:c5:32:e4:ae:\n"
-        "         34:83:12:4a:10:f7:0e:74:d4:5f:73:bd:ef:0c:b7:d8:0a:7d:\n"
-        "         8e:8d:5a:48:bd:f4:8e:7b:f9:4a:15:3b:61:c9:5e:40:59:6e:\n"
-        "         c7:a8:a4:02:28:72:c5:54:8c:77:f4:55:a7:86:c0:38:a0:68:\n"
-        "         19:da:0f:72:5a:a9:7e:69:9f:9c:3a:d6:66:aa:e1:f4:fd:f9:\n"
-        "         b8:4b:6c:71:9e:f0:38:02:c7:6a:9e:dc:e6:fb:ef:23:59:4f:\n"
-        "         5c:84:0a:df:ea:86:1f:fd:0e:5c:fa:c4:e5:50:1c:10:cf:89:\n"
-        "         4e:08:0e:4c:4b:61:1a:49:12:f7:e9:4b:17:71:43:7b:6d:b6:\n"
-        "         b5:9f:d4:3b:c7:88:53:48:63:b6:00:80:8f:49:0a:c5:7e:58:\n"
-        "         ac:78:d8:b9:06:b0:bc:86:e2:2e:48:5b:c3:24:fa:aa:72:d8:\n"
-        "         ec:f6:c7:91:9f:0f:c8:b5:fd:2b:b2:a7:bc:2f:40:20:2b:47:\n"
-        "         e0:d1:1d:94:52:6f:6b:be:12:b6:8c:dc:11:db:71:e6:19:ef:\n"
-        "         a8:71:8b:ad:d3:32:c0:1c:a4:3f:b3:0f:af:e5:50:e1:ff:41:\n"
-        "         a4:b7:6f:57:71:af:fd:16:4c:e8:24:b3:99:1b:cf:12:8f:43:\n"
-        "         05:80:ba:18:19:0a:a5:ec:49:81:41:4c:7e:28:b2:21:f2:59:\n"
-        "         6e:4a:ed:de:f9:fa:99:85:60:1f:e6:c2:42:5c:08:00:3c:84:\n"
-        "         06:a9:24:d4:cf:7b:6e:1b:59:1d:f4:70:16:03:a1:e0:0b:00:\n"
-        "         95:5c:39:03:fc:9d:1c:8e:f7:59:0c:61:47:f6:7f:07:22:48:\n"
-        "         83:40:ac:e1:98:5f:c7:be:05:d5:29:2b:bf:0d:03:0e:e9:5e:\n"
-        "         2b:dd:09:18:fe:5e:30:61\n"
+        "         ad:7c:50:12:24:62:62:83:e9:dd:81:1a:12:1c:6d:ae:1e:a6:\n"
+        "         01:cc:93:8b:ac:83:7c:3d:57:d7:7f:d2:13:40:82:c7:27:07:\n"
+        "         31:d8:c4:01:04:64:9c:dc:ae:7b:52:bd:f5:62:7a:d0:7c:13:\n"
+        "         1a:19:86:6a:ce:9a:ba:69:07:77:75:b6:67:56:d0:c3:8d:6f:\n"
+        "         59:5f:ac:31:83:32:2c:4f:8c:85:8c:f3:56:5b:e0:83:16:19:\n"
+        "         c9:55:4d:56:2c:e0:06:f8:71:85:4b:7e:c6:20:b3:f6:5b:85:\n"
+        "         6a:b7:0f:0e:0c:75:38:6a:aa:53:cc:b0:bf:c1:fd:a1:01:8a:\n"
+        "         7e:5a:0b:4d:51:fc:1b:14:b0:8d:62:17:b7:5d:6a:64:30:80:\n"
+        "         aa:50:9a:23:9e:19:46:11:9d:49:d1:35:81:87:80:8c:9c:71:\n"
+        "         61:26:07:23:5d:a7:ea:4e:0c:53:77:bd:eb:18:6d:63:8b:2c:\n"
+        "         e1:83:bb:bb:f8:3e:7c:e8:0d:19:1e:be:35:aa:99:0f:c7:25:\n"
+        "         0c:a8:f9:74:02:c8:4c:8e:bb:13:18:fd:aa:21:34:bc:2d:9f:\n"
+        "         10:96:e2:99:e3:9a:d7:91:0e:1e:77:20:70:e9:b4:63:25:f8:\n"
+        "         ea:14:1f:24:b0:6a:8b:2a:f4:61:b1:0d:7d:18:bc:1d:6d:04:\n"
+        "         11:b2:9f:a2:a7:55:be:2b:2c:2f:c1:d8:95:13:73:af:1c:96:\n"
+        "         49:30:9c:9c:94:81:6c:9b:a7:87:5c:cf:46:95:95:4a:6f:bf:\n"
+        "         df:c9:3d:74:3e:24:6e:44:1e:14:8b:68:23:e4:00:b5:a5:b7:\n"
+        "         5b:a9:ea:16:5f:fa:b1:d3:1a:b1:9b:36:ef:a4:7a:6f:a3:b0:\n"
+        "         97:35:ac:70:c0:cc:8e:a2:d3:40:0e:c1:70:0b:d5:ce:cd:51:\n"
+        "         82:8a:40:72:04:8d:62:af:ba:a8:e7:a8:e9:b9:99:b7:5c:5d:\n"
+        "         27:96:b2:3d:f9:0d:26:8c:3f:db:ac:86:97:be:f1:2c:0b:ca:\n"
+        "         90:07:93:96:f4:75:c3:e8:4c:f6:a8:a2:3f:da:11:21:e7:b1:\n"
+        "         8c:62:36:ae:91:a9:2a:73:ba:67:f5:24:16:c3:ee:b7:b1:b4:\n"
+        "         e3:8a:28:23:84:cf:38:c6:f0:8e:21:f6:b8:76:9a:6d:d1:e3:\n"
+        "         74:81:7a:22:20:a0:82:2a:31:8a:ba:44:0b:61:5a:aa:ba:c6:\n"
+        "         07:99:36:0a:24:06:2f:8e:c1:1c:4b:f0:65:72:fb:e9:b5:31:\n"
+        "         59:13:2c:c6:f8:5b:91:e2:d8:96:f3:1a:06:0b:2a:62:12:4d:\n"
+        "         5e:65:c9:e9:e4:00:99:a6:d3:60:1f:c3:d6:cc:a6:9b:a5:14:\n"
+        "         1b:4d:db:e7:3d:52:7e:2c\n"
         "-----BEGIN CERTIFICATE-----\n"
-        "MIIGbjCCBFagAwIBAgICEAAwDQYJKoZIhvcNAQELBQAwgaoxCzAJBgNVBAYTAlVT\n"
-        "MRMwEQYDVQQIDApDYWxpZm9ybmlhMRMwEQYDVQQKDApMaW5kZW4gTGFiMSAwHgYD\n"
-        "VQQLDBdTZWNvbmQgTGlmZSBFbmdpbmVlcmluZzEpMCcGA1UEAwwgSW50ZWdyYXRp\n"
-        "b24gVGVzdCBJbnRlcm1lZGlhdGUgQ0ExJDAiBgkqhkiG9w0BCQEWFW5vcmVwbHlA\n"
-        "bGluZGVubGFiLmNvbTAeFw0xODA1MjIyMjU4MTVaFw0yNDA3MTkyMjU4MTVaMIG+\n"
-        "MQswCQYDVQQGEwJVUzETMBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2Fu\n"
-        "IEZyYW5jaXNjbzETMBEGA1UECgwKTGluZGVuIExhYjEgMB4GA1UECwwXU2Vjb25k\n"
-        "IExpZmUgRW5naW5lZXJpbmcxJTAjBgNVBAMMHEludGVncmF0aW9uIFRlc3QgU2Vy\n"
-        "dmVyIENlcnQxJDAiBgkqhkiG9w0BCQEWFW5vcmVwbHlAbGluZGVubGFiLmNvbTCC\n"
-        "ASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAL+hHHaCShAdJQ4C4npkVMeU\n"
-        "xcCY1TXzy8swujGcvUwvSk4kA0uHXMFc/tmJO8sBvOult3jcs1jleKcVNFAwqhY6\n"
-        "spQXbR5/snAelkG7HeMigPrcAGr7ND5n58IhLxvTrwRJkeu7YOAmUnUoighbkVZO\n"
-        "UVBAUXCvy4BmyFnp4kioYtAmZ4AKEhbR9hWeH/WSN/PJLwOeIvZgWnZFjAEsmVRy\n"
-        "Gdu3cuZaafPpMWVdD8dcnBcpcRR/20fJHmWiQbAvFBfsSyXyQ4+0o403Ggc0sym7\n"
-        "ikSOhAiiG3Z6y8I5L27j/NaRtR/OWJFXcDVuJalIDgfPTt0WQmXPikKzJ+b+auMC\n"
-        "AwEAAaOCAYYwggGCMAkGA1UdEwQCMAAwEQYJYIZIAYb4QgEBBAQDAgZAMDMGCWCG\n"
-        "SAGG+EIBDQQmFiRPcGVuU1NMIEdlbmVyYXRlZCBTZXJ2ZXIgQ2VydGlmaWNhdGUw\n"
-        "HQYDVR0OBBYEFLtZn95rUadss21bi0L3sWV3F6TkMIHoBgNVHSMEgeAwgd2AFIMh\n"
-        "3uzAeQNtHoPz5Zcp1VrAlkD6oYHApIG9MIG6MQswCQYDVQQGEwJVUzETMBEGA1UE\n"
-        "CAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5jaXNjbzETMBEGA1UECgwK\n"
-        "TGluZGVuIExhYjEgMB4GA1UECwwXU2Vjb25kIExpZmUgRW5naW5lZXJpbmcxITAf\n"
-        "BgNVBAMMGEludGVncmF0aW9uIFRlc3QgUm9vdCBDQTEkMCIGCSqGSIb3DQEJARYV\n"
-        "bm9yZXBseUBsaW5kZW5sYWIuY29tggIQADAOBgNVHQ8BAf8EBAMCBaAwEwYDVR0l\n"
-        "BAwwCgYIKwYBBQUHAwEwDQYJKoZIhvcNAQELBQADggIBABimWFWb1K99iifTKDpM\n"
-        "S0JO8DDW2ZURSBIKlkDZKyE5xdSN5RC8aHhpC58VSgvxq5lFDCBfJ9/nFC1KMPLC\n"
-        "jTdzNhonVVoIX3GhXgWDsln+Al7XSjAVI1gEz0jMsHGInGtX8AQK06Bka+7zX+qs\n"
-        "4Su5f3m4285ySHLbyFw4cjFV0P9rvXMjpzAYXe1HGApnjlMyDpmblnJFf8YALF0a\n"
-        "l1N1OgtJPToANxRnDCiXNIeqxTLkrjSDEkoQ9w501F9zve8Mt9gKfY6NWki99I57\n"
-        "+UoVO2HJXkBZbseopAIocsVUjHf0VaeGwDigaBnaD3JaqX5pn5w61maq4fT9+bhL\n"
-        "bHGe8DgCx2qe3Ob77yNZT1yECt/qhh/9Dlz6xOVQHBDPiU4IDkxLYRpJEvfpSxdx\n"
-        "Q3tttrWf1DvHiFNIY7YAgI9JCsV+WKx42LkGsLyG4i5IW8Mk+qpy2Oz2x5GfD8i1\n"
-        "/Suyp7wvQCArR+DRHZRSb2u+EraM3BHbceYZ76hxi63TMsAcpD+zD6/lUOH/QaS3\n"
-        "b1dxr/0WTOgks5kbzxKPQwWAuhgZCqXsSYFBTH4osiHyWW5K7d75+pmFYB/mwkJc\n"
-        "CAA8hAapJNTPe24bWR30cBYDoeALAJVcOQP8nRyO91kMYUf2fwciSINArOGYX8e+\n"
-        "BdUpK78NAw7pXivdCRj+XjBh\n"
+        "MIIHSTCCBTGgAwIBAgIJAJ6NNBPnm/kxMA0GCSqGSIb3DQEBCwUAMIHCMQswCQYD\n"
+        "VQQGEwJVUzETMBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5j\n"
+        "aXNjbzETMBEGA1UECgwKTGluZGVuIExhYjEgMB4GA1UECwwXU2Vjb25kIExpZmUg\n"
+        "RW5naW5lZXJpbmcxKTAnBgNVBAMMIEludGVncmF0aW9uIFRlc3QgSW50ZXJtZWRp\n"
+        "YXRlIENBMSQwIgYJKoZIhvcNAQkBFhVub3JlcGx5QGxpbmRlbmxhYi5jb20wHhcN\n"
+        "MjQwNzIzMTE0NjM5WhcNMzQwNzIxMTE0NjM5WjCBvjELMAkGA1UEBhMCVVMxEzAR\n"
+        "BgNVBAgMCkNhbGlmb3JuaWExFjAUBgNVBAcMDVNhbiBGcmFuY2lzY28xEzARBgNV\n"
+        "BAoMCkxpbmRlbiBMYWIxIDAeBgNVBAsMF1NlY29uZCBMaWZlIEVuZ2luZWVyaW5n\n"
+        "MSUwIwYDVQQDDBxJbnRlZ3JhdGlvbiBUZXN0IFNlcnZlciBDZXJ0MSQwIgYJKoZI\n"
+        "hvcNAQkBFhVub3JlcGx5QGxpbmRlbmxhYi5jb20wggIiMA0GCSqGSIb3DQEBAQUA\n"
+        "A4ICDwAwggIKAoICAQDYrAwnj+rATSHkdVUxV4NGRxQe9WeumGDEl23oU/JNO+xv\n"
+        "CLwewOKmdbWQHTCiWWgyECspZ/yZ8SRqNnNgMWvHoLiwOGCxWSMsqyWiyLC8LMbX\n"
+        "TIc3G15RpGM+xG3t2l7TrYptUuSHODN2z/KGWLMQpJGNPU8nmou012eQMRz1f3iv\n"
+        "b/LdOdAWFntGrYgbO3RrECmLZLrtn6dpmVWPcw0Yo39AIDpBSpQ5Yov+xp150M0c\n"
+        "4tR0u0N164aLMMGNzBSrdS71PgwFy+TDktiBjN+lTi4LrhcVm+bdnhZGQieSig46\n"
+        "dB7RP+5+pdfsHGPUlls2+RXu2masXt6R2Qgk+138m3fd/yCmZ29IQV5arBOkLCry\n"
+        "oxWG4oQzNOORJ4s3urDHXhoNufJODFXmu9lj9QV7qhnlV86lsUZLswT2oJcm7Ujt\n"
+        "l5OmdbGjQvzMV4naROkWpjAsAY7y7b5FBQiKrx4HUYnPUUyq87Pwb9shgBEyCiPi\n"
+        "/8xZFev/0rjWocG0lhKCvz9orchhUPiIT9C+jilkGhal2Sl2Fs1wN8TyH07GVzbd\n"
+        "wScZcu+YfjQlP3ax6hWyOG7TQwN6K3iRmhkmKjG3XrcixP2/kxCkIz/XeVMoXS66\n"
+        "DLBeCrTEoXF1iBuyDixnCHvw9jfTqjlQA6N8Fx1SUipr0KJULroRvCapFqYbeQID\n"
+        "AQABo4IBQjCCAT4wCQYDVR0TBAIwADALBgNVHQ8EBAMCBaAwEwYDVR0lBAwwCgYI\n"
+        "KwYBBQUHAwEwHQYDVR0OBBYEFHsa+SvEsvau1vKOsXP73RHK2/iHMIHvBgNVHSME\n"
+        "gecwgeSAFFaY3EUlEeKMK+rWxuLIvizIaf//oYHApIG9MIG6MQswCQYDVQQGEwJV\n"
+        "UzETMBEGA1UECAwKQ2FsaWZvcm5pYTEWMBQGA1UEBwwNU2FuIEZyYW5jaXNjbzET\n"
+        "MBEGA1UECgwKTGluZGVuIExhYjEgMB4GA1UECwwXU2Vjb25kIExpZmUgRW5naW5l\n"
+        "ZXJpbmcxITAfBgNVBAMMGEludGVncmF0aW9uIFRlc3QgUm9vdCBDQTEkMCIGCSqG\n"
+        "SIb3DQEJARYVbm9yZXBseUBsaW5kZW5sYWIuY29tggkAhbtLZibbmsYwDQYJKoZI\n"
+        "hvcNAQELBQADggIBAK18UBIkYmKD6d2BGhIcba4epgHMk4usg3w9V9d/0hNAgscn\n"
+        "BzHYxAEEZJzcrntSvfVietB8ExoZhmrOmrppB3d1tmdW0MONb1lfrDGDMixPjIWM\n"
+        "81Zb4IMWGclVTVYs4Ab4cYVLfsYgs/ZbhWq3Dw4MdThqqlPMsL/B/aEBin5aC01R\n"
+        "/BsUsI1iF7ddamQwgKpQmiOeGUYRnUnRNYGHgIyccWEmByNdp+pODFN3vesYbWOL\n"
+        "LOGDu7v4PnzoDRkevjWqmQ/HJQyo+XQCyEyOuxMY/aohNLwtnxCW4pnjmteRDh53\n"
+        "IHDptGMl+OoUHySwaosq9GGxDX0YvB1tBBGyn6KnVb4rLC/B2JUTc68clkkwnJyU\n"
+        "gWybp4dcz0aVlUpvv9/JPXQ+JG5EHhSLaCPkALWlt1up6hZf+rHTGrGbNu+kem+j\n"
+        "sJc1rHDAzI6i00AOwXAL1c7NUYKKQHIEjWKvuqjnqOm5mbdcXSeWsj35DSaMP9us\n"
+        "hpe+8SwLypAHk5b0dcPoTPaooj/aESHnsYxiNq6RqSpzumf1JBbD7rextOOKKCOE\n"
+        "zzjG8I4h9rh2mm3R43SBeiIgoIIqMYq6RAthWqq6xgeZNgokBi+OwRxL8GVy++m1\n"
+        "MVkTLMb4W5Hi2JbzGgYLKmISTV5lyenkAJmm02Afw9bMppulFBtN2+c9Un4s\n"
         "-----END CERTIFICATE-----\n"
-                                    );
+    );
+
 
     // Test wrapper declaration : wrapping nothing for the moment
     struct sechandler_basic_test
@@ -634,19 +655,19 @@ namespace tut
 
             // Read each of the 4 Pem certs and store in mX509*Cert pointers
             BIO * validation_bio;
-            validation_bio = BIO_new_mem_buf((void*)mPemTestCert.c_str(), mPemTestCert.length());
+            validation_bio = BIO_new_mem_buf((void*)mPemTestCert.c_str(), static_cast<S32>(mPemTestCert.length()));
             PEM_read_bio_X509(validation_bio, &mX509TestCert, 0, NULL);
             BIO_free(validation_bio);
 
-            validation_bio = BIO_new_mem_buf((void*)mPemRootCert.c_str(), mPemRootCert.length());
+            validation_bio = BIO_new_mem_buf((void*)mPemRootCert.c_str(), static_cast<S32>(mPemRootCert.length()));
             PEM_read_bio_X509(validation_bio, &mX509RootCert, 0, NULL);
             BIO_free(validation_bio);
 
-            validation_bio = BIO_new_mem_buf((void*)mPemIntermediateCert.c_str(), mPemIntermediateCert.length());
+            validation_bio = BIO_new_mem_buf((void*)mPemIntermediateCert.c_str(), static_cast<S32>(mPemIntermediateCert.length()));
             PEM_read_bio_X509(validation_bio, &mX509IntermediateCert, 0, NULL);
             BIO_free(validation_bio);
 
-            validation_bio = BIO_new_mem_buf((void*)mPemChildCert.c_str(), mPemChildCert.length());
+            validation_bio = BIO_new_mem_buf((void*)mPemChildCert.c_str(), static_cast<S32>(mPemChildCert.length()));
             PEM_read_bio_X509(validation_bio, &mX509ChildCert, 0, NULL);
             BIO_free(validation_bio);
         }
@@ -701,14 +722,13 @@ namespace tut
         //std::ostringstream llsd_value;
         //llsd_value << LLSDOStreamer<LLSDNotationFormatter>(llsd_cert) << std::endl;
         LL_DEBUGS() << "test 1 cert " << llsd_cert << LL_ENDL;
-
         ensure_equals("Issuer Name/commonName", (std::string)llsd_cert["issuer_name"]["commonName"], "Integration Test Intermediate CA");
         ensure_equals("Issuer Name/countryName", (std::string)llsd_cert["issuer_name"]["countryName"], "US");
         ensure_equals("Issuer Name/state", (std::string)llsd_cert["issuer_name"]["stateOrProvinceName"], "California");
         ensure_equals("Issuer Name/org name", (std::string)llsd_cert["issuer_name"]["organizationName"], "Linden Lab");
         ensure_equals("Issuer Name/org unit", (std::string)llsd_cert["issuer_name"]["organizationalUnitName"], "Second Life Engineering");
         ensure_equals("Issuer name string", (std::string)llsd_cert["issuer_name_string"],
-                      "emailAddress=noreply@lindenlab.com,CN=Integration Test Intermediate CA,OU=Second Life Engineering,O=Linden Lab,ST=California,C=US");
+                      "emailAddress=noreply@lindenlab.com,CN=Integration Test Intermediate CA,OU=Second Life Engineering,O=Linden Lab,L=San Francisco,ST=California,C=US");
         ensure_equals("subject Name/commonName", (std::string)llsd_cert["subject_name"]["commonName"],
                       "Integration Test Server Cert");
         ensure_equals("subject Name/countryName", (std::string)llsd_cert["subject_name"]["countryName"], "US");
@@ -721,9 +741,9 @@ namespace tut
         ensure_equals("subject name string",
                (std::string)llsd_cert["subject_name_string"],
                       "emailAddress=noreply@lindenlab.com,CN=Integration Test Server Cert,OU=Second Life Engineering,O=Linden Lab,L=San Francisco,ST=California,C=US");
-        ensure_equals("serial number", (std::string)llsd_cert["serial_number"], "1000");
-        ensure_equals("valid from", (std::string)llsd_cert["valid_from"], "2018-05-22T22:58:15Z");
-        ensure_equals("valid to", (std::string)llsd_cert["valid_to"], "2024-07-19T22:58:15Z");
+        ensure_equals("serial number", (std::string)llsd_cert["serial_number"], "9E8D3413E79BF931");
+        ensure_equals("valid from", (std::string)llsd_cert["valid_from"], "2024-07-23T11:46:39Z");
+        ensure_equals("valid to", (std::string)llsd_cert["valid_to"], "2034-07-21T11:46:39Z");
         LLSD expectedKeyUsage = LLSD::emptyArray();
         expectedKeyUsage.append(LLSD((std::string)"digitalSignature"));
         expectedKeyUsage.append(LLSD((std::string)"keyEncipherment"));
@@ -964,7 +984,7 @@ namespace tut
         // test creation of credentials
         my_cred = handler->createCredential("mysavedgrid", my_id, my_authenticator);
         // test save without saving authenticator.
-        handler->saveCredential(my_cred, FALSE);
+        handler->saveCredential(my_cred, false);
         my_new_cred = handler->loadCredential("mysavedgrid");
         ensure_equals("saved credential without auth",
                       (const std::string)my_new_cred->getIdentifier()["type"], "test_type");
@@ -1042,7 +1062,7 @@ namespace tut
 
         //validate find
         LLSD find_info = LLSD::emptyMap();
-        find_info["subjectKeyIdentifier"] = "bb:59:9f:de:6b:51:a7:6c:b3:6d:5b:8b:42:f7:b1:65:77:17:a4:e4";
+        find_info["subjectKeyIdentifier"] = "7b:1a:f9:2b:c4:b2:f6:ae:d6:f2:8e:b1:73:fb:dd:11:ca:db:f8:87";
         LLBasicCertificateVector::iterator found_cert = test_vector->find(find_info);
         ensure("found some cert", found_cert != test_vector->end());
         X509* found_x509 = (*found_cert).get()->getOpenSSLX509();
@@ -1225,7 +1245,7 @@ namespace tut
         X509_STORE_CTX_set0_untrusted(test_store, NULL);
         test_chain = new LLBasicCertificateChain(test_store);
         X509_STORE_CTX_free(test_store);
-        ensure_equals("two elements in store", test_chain->size(), 1);
+        ensure_equals("two elements in store [1]", test_chain->size(), 1);
         X509* test_cert = (*test_chain)[0]->getOpenSSLX509();
         ensure("validate first element in store is expected cert", !X509_cmp(test_cert, mX509ChildCert));
         X509_free(test_cert);
@@ -1238,7 +1258,7 @@ namespace tut
         sk_X509_push(X509_STORE_CTX_get0_untrusted(test_store), mX509IntermediateCert);
         test_chain = new LLBasicCertificateChain(test_store);
         X509_STORE_CTX_free(test_store);
-        ensure_equals("two elements in store", test_chain->size(), 2);
+        ensure_equals("two elements in store [2]", test_chain->size(), 2);
         test_cert = (*test_chain)[0]->getOpenSSLX509();
         ensure("validate first element in store is expected cert", !X509_cmp(test_cert, mX509ChildCert));
         X509_free(test_cert);
@@ -1254,7 +1274,7 @@ namespace tut
         sk_X509_push(X509_STORE_CTX_get0_untrusted(test_store), mX509TestCert);
         test_chain = new LLBasicCertificateChain(test_store);
         X509_STORE_CTX_free(test_store);
-        ensure_equals("two elements in store", test_chain->size(), 1);
+        ensure_equals("two elements in store [3]", test_chain->size(), 1);
         test_cert = (*test_chain)[0]->getOpenSSLX509();
         ensure("validate first element in store is expected cert", !X509_cmp(test_cert, mX509ChildCert));
         X509_free(test_cert);
@@ -1267,7 +1287,7 @@ namespace tut
         sk_X509_push(X509_STORE_CTX_get0_untrusted(test_store), mX509TestCert);
         test_chain = new LLBasicCertificateChain(test_store);
         X509_STORE_CTX_free(test_store);
-        ensure_equals("two elements in store", test_chain->size(), 2);
+        ensure_equals("two elements in store [4]", test_chain->size(), 2);
         test_cert = (*test_chain)[0]->getOpenSSLX509();
         ensure("validate first element in store is expected cert", !X509_cmp(test_cert, mX509ChildCert));
         X509_free(test_cert);
diff --git a/indra/newview/tests/llslurl_test.cpp b/indra/newview/tests/llslurl_test.cpp
index 92ba68a073..3be44a9bd5 100644
--- a/indra/newview/tests/llslurl_test.cpp
+++ b/indra/newview/tests/llslurl_test.cpp
@@ -64,14 +64,14 @@ LLControlVariable* LLControlGroup::declareString(const std::string& name,
                                    const std::string& initial_val,
                                    const std::string& comment,
                                    LLControlVariable::ePersist persist) {return NULL;}
-void LLControlGroup::setString(const std::string& name, const std::string& val){}
+void LLControlGroup::setString(std::string_view name, const std::string& val){}
 
 std::string gCmdLineLoginURI;
 std::string gCmdLineGridChoice;
 std::string gCmdLineHelperURI;
 std::string gLoginPage;
 std::string gCurrentGrid;
-std::string LLControlGroup::getString(const std::string& name)
+std::string LLControlGroup::getString(std::string_view name)
 {
     if (name == "CmdLineGridChoice")
         return gCmdLineGridChoice;
@@ -84,7 +84,7 @@ std::string LLControlGroup::getString(const std::string& name)
     return "";
 }
 
-LLSD LLControlGroup::getLLSD(const std::string& name)
+LLSD LLControlGroup::getLLSD(std::string_view name)
 {
     if (name == "CmdLineLoginURI")
     {
@@ -96,9 +96,9 @@ LLSD LLControlGroup::getLLSD(const std::string& name)
     return LLSD();
 }
 
-LLPointer<LLControlVariable> LLControlGroup::getControl(const std::string& name)
+LLPointer<LLControlVariable> LLControlGroup::getControl(std::string_view name)
 {
-    ctrl_name_table_t::iterator iter = mNameTable.find(name);
+    ctrl_name_table_t::iterator iter = mNameTable.find(name.data());
     return iter == mNameTable.end() ? LLPointer<LLControlVariable>() : iter->second;
 }
 
diff --git a/indra/newview/tests/llviewerassetstats_test.cpp b/indra/newview/tests/llviewerassetstats_test.cpp
index 278de5f31c..d5e281bba8 100644
--- a/indra/newview/tests/llviewerassetstats_test.cpp
+++ b/indra/newview/tests/llviewerassetstats_test.cpp
@@ -43,7 +43,7 @@ namespace LLStatViewer
     LLTrace::SampleStatHandle<>     FPS_SAMPLE("fpssample");
 }
 
-void LLVOAvatar::getNearbyRezzedStats(std::vector<S32>& counts)
+void LLVOAvatar::getNearbyRezzedStats(std::vector<S32>& counts, F32& avg_cloud_time, S32& cloud_avatars)
 {
     counts.resize(3);
     counts[0] = 0;
diff --git a/indra/newview/tests/llviewercontrollistener_test.cpp b/indra/newview/tests/llviewercontrollistener_test.cpp
index a5eeae8e5b..f261a04544 100644
--- a/indra/newview/tests/llviewercontrollistener_test.cpp
+++ b/indra/newview/tests/llviewercontrollistener_test.cpp
@@ -40,7 +40,7 @@ namespace tut
         {
             Global.declareString("strvar", "woof", "string variable");
             // together we will stroll the boolvar, ma cherie
-            Global.declareBOOL("boolvar",  TRUE, "bool variable");
+            Global.declareBOOL("boolvar",  true, "bool variable");
         }
     };
     typedef test_group<llviewercontrollistener_data> llviewercontrollistener_group;
@@ -167,7 +167,7 @@ namespace tut
                 "boolvar",
                 llsd::map("name", "boolvar",
                           "type", "Boolean",
-                          "value", TRUE,
+                          "value", true,
                           "comment", "bool variable")));
     }
 } // namespace tut
diff --git a/indra/newview/tests/llviewerhelputil_test.cpp b/indra/newview/tests/llviewerhelputil_test.cpp
index 7890e9330c..9ee6625bf1 100644
--- a/indra/newview/tests/llviewerhelputil_test.cpp
+++ b/indra/newview/tests/llviewerhelputil_test.cpp
@@ -53,8 +53,8 @@ LLControlVariable* LLControlGroup::declareString(const std::string& name,
                    const std::string& initial_val,
                    const std::string& comment,
                    LLControlVariable::ePersist persist) {return NULL;}
-void LLControlGroup::setString(const std::string& name, const std::string& val){}
-std::string LLControlGroup::getString(const std::string& name)
+void LLControlGroup::setString(std::string_view name, const std::string& val){}
+std::string LLControlGroup::getString(std::string_view name)
 {
     if (name == "HelpURLFormat")
         return gHelpURL;
@@ -75,7 +75,7 @@ static void substitute_string(std::string &input, const std::string &search, con
 #include "../llagent.h"
 LLAgent::LLAgent() : mAgentAccess(NULL) { }
 LLAgent::~LLAgent() { }
-bool LLAgent::isGodlike() const { return FALSE; }
+bool LLAgent::isGodlike() const { return false; }
 
 LLAgent gAgent;
 
diff --git a/indra/newview/tests/llviewernetwork_test.cpp b/indra/newview/tests/llviewernetwork_test.cpp
index cd5e20f6dd..40c2059d27 100644
--- a/indra/newview/tests/llviewernetwork_test.cpp
+++ b/indra/newview/tests/llviewernetwork_test.cpp
@@ -73,14 +73,14 @@ LLControlVariable* LLControlGroup::declareString(const std::string& name,
                                    const std::string& initial_val,
                                    const std::string& comment,
                                    LLControlVariable::ePersist persist) {return NULL;}
-void LLControlGroup::setString(const std::string& name, const std::string& val){}
+void LLControlGroup::setString(std::string_view name, const std::string& val){}
 
 std::string gCmdLineLoginURI;
 std::string gCmdLineGridChoice;
 std::string gCmdLineHelperURI;
 std::string gLoginPage;
 std::string gCurrentGrid;
-std::string LLControlGroup::getString(const std::string& name)
+std::string LLControlGroup::getString(std::string_view name)
 {
     if (name == "CmdLineGridChoice")
         return gCmdLineGridChoice;
@@ -93,7 +93,7 @@ std::string LLControlGroup::getString(const std::string& name)
     return "";
 }
 
-LLSD LLControlGroup::getLLSD(const std::string& name)
+LLSD LLControlGroup::getLLSD(std::string_view name)
 {
     if (name == "CmdLineLoginURI")
     {
@@ -105,9 +105,9 @@ LLSD LLControlGroup::getLLSD(const std::string& name)
     return LLSD();
 }
 
-LLPointer<LLControlVariable> LLControlGroup::getControl(const std::string& name)
+LLPointer<LLControlVariable> LLControlGroup::getControl(std::string_view name)
 {
-    ctrl_name_table_t::iterator iter = mNameTable.find(name);
+    ctrl_name_table_t::iterator iter = mNameTable.find(name.data());
     return iter == mNameTable.end() ? LLPointer<LLControlVariable>() : iter->second;
 }
 
diff --git a/indra/newview/tests/llworldmap_test.cpp b/indra/newview/tests/llworldmap_test.cpp
index 03ab9de96c..8564dbeeb6 100644
--- a/indra/newview/tests/llworldmap_test.cpp
+++ b/indra/newview/tests/llworldmap_test.cpp
@@ -49,7 +49,7 @@
 // Stub image calls
 void LLGLTexture::setBoostLevel(S32 ) { }
 void LLGLTexture::setAddressMode(LLTexUnit::eTextureAddressMode ) { }
-LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTexture(const LLUUID&, FTType, BOOL, LLGLTexture::EBoostLevel, S8,
+LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTexture(const LLUUID&, FTType, bool, LLGLTexture::EBoostLevel, S8,
                                                                   LLGLint, LLGLenum, LLHost ) { return NULL; }
 
 // Stub related map calls
diff --git a/indra/newview/tests/llworldmipmap_test.cpp b/indra/newview/tests/llworldmipmap_test.cpp
index dcbee79536..0a5de18e0f 100644
--- a/indra/newview/tests/llworldmipmap_test.cpp
+++ b/indra/newview/tests/llworldmipmap_test.cpp
@@ -43,12 +43,12 @@
 // * A simulator for a class can be implemented here. Please comment and document thoroughly.
 
 void LLGLTexture::setBoostLevel(S32 ) { }
-LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTextureFromUrl(const std::string&, FTType, BOOL, LLGLTexture::EBoostLevel, S8,
+LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTextureFromUrl(const std::string&, FTType, bool, LLGLTexture::EBoostLevel, S8,
                                                                          LLGLint, LLGLenum, const LLUUID& ) { return NULL; }
 
 LLControlGroup::LLControlGroup(const std::string& name) : LLInstanceTracker<LLControlGroup, std::string>(name) { }
 LLControlGroup::~LLControlGroup() { }
-std::string LLControlGroup::getString(const std::string& ) { return std::string("test_url"); }
+std::string LLControlGroup::getString(std::string_view) { return std::string("test_url"); }
 LLControlGroup gSavedSettings("test_settings");
 
 // End Stubbing
diff --git a/indra/newview/viewer_manifest.py b/indra/newview/viewer_manifest.py
index f69d690cea..4888b70f0a 100755
--- a/indra/newview/viewer_manifest.py
+++ b/indra/newview/viewer_manifest.py
@@ -555,13 +555,6 @@ class Windows_x86_64_Manifest(ViewerManifest):
             ):
                 self.path(libfile)
 
-            # Get fmodstudio dll if needed
-            if self.args['fmodstudio'] == 'ON':
-                if(self.args['buildtype'].lower() == 'debug'):
-                    self.path("fmodL.dll")
-                else:
-                    self.path("fmod.dll")
-
             if self.args['openal'] == 'ON':
                 # Get openal dll
                 self.path("OpenAL32.dll")
@@ -1041,18 +1034,13 @@ class Darwin_x86_64_Manifest(ViewerManifest):
                                 ):
                     self.path2basename(relpkgdir, libfile)
 
-                # Fmod studio dylibs (vary based on configuration)
-                if self.args['fmodstudio'] == 'ON':
-                    if self.args['buildtype'].lower() == 'debug':
-                        for libfile in (
-                                    "libfmodL.dylib",
-                                    ):
-                            dylibs += path_optional(os.path.join(debpkgdir, libfile), libfile)
-                    else:
-                        for libfile in (
-                                    "libfmod.dylib",
-                                    ):
-                            dylibs += path_optional(os.path.join(relpkgdir, libfile), libfile)
+                # OpenAL dylibs
+                if self.args['openal'] == 'ON':
+                    for libfile in (
+                                "libopenal.dylib",
+                                "libalut.dylib",
+                                ):
+                        dylibs += path_optional(os.path.join(relpkgdir, libfile), libfile)
 
                 # our apps
                 executable_path = {}
@@ -1820,15 +1808,34 @@ class Linux_x86_64_Manifest(LinuxManifest):
             self.path_optional("libalut.so*")
             self.path_optional("libopenal.so*")
             self.path_optional("libopenal.so", "libvivoxoal.so.1") # vivox's sdk expects this soname
-            if self.args['fmodstudio'] == 'ON':
-                try:
-                    self.path("libfmod.so.11.7")
-                    self.path("libfmod.so.11")
-                    self.path("libfmod.so")
-                    pass
-                except:
-                    print("Skipping libfmod.so - not found")
-                    pass
+            # KLUDGE: As of 2012-04-11, the 'fontconfig' package installs
+            # libfontconfig.so.1.4.4, along with symlinks libfontconfig.so.1
+            # and libfontconfig.so. Before we added support for library-file
+            # wildcards, though, this self.path() call specifically named
+            # libfontconfig.so.1.4.4 WITHOUT also copying the symlinks. When I
+            # (nat) changed the call to self.path("libfontconfig.so.*"), we
+            # ended up with the libfontconfig.so.1 symlink in the target
+            # directory as well. But guess what! At least on Ubuntu 10.04,
+            # certain viewer fonts look terrible with libfontconfig.so.1
+            # present in the target directory. Removing that symlink suffices
+            # to improve them. I suspect that means we actually do better when
+            # the viewer fails to find our packaged libfontconfig.so*, falling
+            # back on the system one instead -- but diagnosing and fixing that
+            # is a bit out of scope for the present project. Meanwhile, this
+            # particular wildcard specification gets us exactly what the
+            # previous call did, without having to explicitly state the
+            # version number.
+            self.path("libfontconfig.so.*.*")
+
+            # Include libfreetype.so. but have it work as libfontconfig does.
+            self.path("libfreetype.so.*.*")
+
+            try:
+                self.path("libtcmalloc.so*") #formerly called google perf tools
+                pass
+            except:
+                print("tcmalloc files not found, skipping")
+                pass
 
         # Vivox runtimes
         with self.prefix(src=relpkgdir, dst="bin"):
@@ -1848,11 +1855,9 @@ if __name__ == "__main__":
     print(('%s \\\n%s' %
           (sys.executable,
            ' '.join((("'%s'" % arg) if ' ' in arg else arg) for arg in sys.argv))))
-    # fmodstudio and openal can be used simultaneously and controled by environment
     extra_arguments = [
         dict(name='bugsplat', description="""BugSplat database to which to post crashes,
              if BugSplat crash reporting is desired""", default=''),
-        dict(name='fmodstudio', description="""Indication if fmod studio libraries are needed""", default='OFF'),
         dict(name='openal', description="""Indication openal libraries are needed""", default='OFF'),
         ]
     try:
diff --git a/indra/test/io.cpp b/indra/test/io.cpp
index 412f9ca1d2..3bb549a98a 100644
--- a/indra/test/io.cpp
+++ b/indra/test/io.cpp
@@ -155,7 +155,7 @@ namespace tut
     void buffer_object::test<1>()
     {
         const char HELLO_WORLD[] = "hello world";
-        const S32 str_len = strlen(HELLO_WORLD);
+        const S32 str_len = static_cast<S32>(strlen(HELLO_WORLD));
         LLChannelDescriptors ch = mBuffer.nextChannel();
         mBuffer.append(ch.in(), (U8*)HELLO_WORLD, str_len);
         S32 count = mBuffer.countAfter(ch.in(), NULL);
@@ -170,7 +170,7 @@ namespace tut
     void buffer_object::test<2>()
     {
         const char HELLO_WORLD[] = "hello world";
-        const S32 str_len = strlen(HELLO_WORLD);        /* Flawfinder: ignore */
+        const S32 str_len = static_cast<S32>(strlen(HELLO_WORLD));        /* Flawfinder: ignore */
         LLChannelDescriptors ch = mBuffer.nextChannel();
         mBuffer.append(ch.in(), (U8*)HELLO_WORLD, str_len);
         mBuffer.append(ch.in(), (U8*)HELLO_WORLD, str_len);
@@ -249,15 +249,15 @@ namespace tut
         expected << "ContentLength: " << response.length() << "\r\n\r\n"
                  << response;
         LLChannelDescriptors ch = mBuffer.nextChannel();
-        mBuffer.append(ch.in(), (U8*)request.c_str(), request.length());
-        mBuffer.append(ch.out(), (U8*)response.c_str(), response.length());
+        mBuffer.append(ch.in(), (U8*)request.c_str(), static_cast<S32>(request.length()));
+        mBuffer.append(ch.out(), (U8*)response.c_str(), static_cast<S32>(response.length()));
         S32 count = mBuffer.countAfter(ch.out(), NULL);
         std::ostringstream header;
         header << "ContentLength: " << count << "\r\n\r\n";
         std::string head(header.str());
-        mBuffer.prepend(ch.out(), (U8*)head.c_str(), head.length());
+        mBuffer.prepend(ch.out(), (U8*)head.c_str(), static_cast<S32>(head.length()));
         char buffer[1024];  /* Flawfinder: ignore */
-        S32 len = response.size() + head.length();
+        S32 len = static_cast<S32>(response.size() + head.length());
         ensure_equals("same length", len, (S32)expected.str().length());
         mBuffer.readAfter(ch.out(), NULL, (U8*)buffer, len);
         buffer[len] = '\0';
@@ -282,7 +282,7 @@ namespace tut
             text.append(lines[i]);
         }
         LLChannelDescriptors ch = mBuffer.nextChannel();
-        mBuffer.append(ch.in(), (U8*)text.c_str(), text.length());
+        mBuffer.append(ch.in(), (U8*)text.c_str(), static_cast<S32>(text.length()));
         const S32 BUFFER_LEN = 1024;
         char buf[BUFFER_LEN];
         S32 len;
@@ -411,7 +411,7 @@ namespace tut
     void bas_object::test<1>()
     {
         const char HELLO_WORLD[] = "hello world";
-        const S32 str_len = strlen(HELLO_WORLD);    /* Flawfinder: ignore */
+        const S32 str_len = static_cast<S32>(strlen(HELLO_WORLD));    /* Flawfinder: ignore */
         LLChannelDescriptors ch = mBuffer.nextChannel();
         LLBufferStream str(ch, &mBuffer);
         mBuffer.append(ch.in(), (U8*)HELLO_WORLD, str_len);
@@ -431,10 +431,10 @@ namespace tut
         std::string ignore("ignore me");
         LLChannelDescriptors ch = mBuffer.nextChannel();
         LLBufferStream str(ch, &mBuffer);
-        mBuffer.append(ch.in(), (U8*)part1.c_str(), part1.length());
-        mBuffer.append(ch.in(), (U8*)part2.c_str(), part2.length());
-        mBuffer.append(ch.out(), (U8*)ignore.c_str(), ignore.length());
-        mBuffer.append(ch.in(), (U8*)part3.c_str(), part3.length());
+        mBuffer.append(ch.in(), (U8*)part1.c_str(), static_cast<S32>(part1.length()));
+        mBuffer.append(ch.in(), (U8*)part2.c_str(), static_cast<S32>(part2.length()));
+        mBuffer.append(ch.out(), (U8*)ignore.c_str(), static_cast<S32>(ignore.length()));
+        mBuffer.append(ch.in(), (U8*)part3.c_str(), static_cast<S32>(part3.length()));
         std::string eat;
         std::string my;
         std::string shorts;
@@ -452,8 +452,8 @@ namespace tut
         std::string part1("junk in ");
         std::string part2("the trunk");
         const S32 CHANNEL = 0;
-        mBuffer.append(CHANNEL, (U8*)part1.c_str(), part1.length());
-        mBuffer.append(CHANNEL, (U8*)part2.c_str(), part2.length());
+        mBuffer.append(CHANNEL, (U8*)part1.c_str(), static_cast<S32>(part1.length()));
+        mBuffer.append(CHANNEL, (U8*)part2.c_str(), static_cast<S32>(part2.length()));
         U8* last = 0;
         const S32 BUF_LEN = 128;
         char buf[BUF_LEN];
@@ -475,7 +475,7 @@ namespace tut
     {
         std::string phrase("zippity do da!");
         const S32 CHANNEL = 0;
-        mBuffer.append(CHANNEL, (U8*)phrase.c_str(), phrase.length());
+        mBuffer.append(CHANNEL, (U8*)phrase.c_str(), static_cast<S32>(phrase.length()));
         const S32 BUF_LEN = 128;
         char buf[BUF_LEN];
         S32 len = 7;
@@ -506,7 +506,7 @@ namespace tut
         const S32 BUF_LEN = 128;
         char buf[BUF_LEN];
         S32 actual_len = BUF_LEN;
-        S32 expected_len = h1.size() + h2.size();
+        S32 expected_len = static_cast<S32>(h1.size() + h2.size());
         (void) mBuffer.readAfter(ch.out(), NULL, (U8*)buf, actual_len);
         ensure_equals("streamed size", actual_len, expected_len);
         buf[actual_len] = '\0';
@@ -728,7 +728,7 @@ namespace tut
                                         "'circuit_code': i124,'group_id': '8615c885-9cf0-bf0a-6e40-0c11462aa652','limited_to_estate': i1,'look_at': [ i0, i0, i0],"
                                         "'agent_id': '0e346d8b-4433-4d66-a6b0-fd37083abc4c','first_name': 'Kelly','start': 'url'}]}";
         LLChannelDescriptors ch = mBuffer.nextChannel();
-        mBuffer.append(ch.out(), (U8*)LOGIN_STREAM, strlen(LOGIN_STREAM));      /* Flawfinder: ignore */
+        mBuffer.append(ch.out(), (U8*)LOGIN_STREAM, static_cast<S32>(strlen(LOGIN_STREAM)));      /* Flawfinder: ignore */
         ch = mBuffer.nextChannel();
         LLBufferStream istr(ch, &mBuffer);
         LLSD data;
@@ -1130,7 +1130,7 @@ namespace tut
         mPump->addChain(chain, NEVER_CHAIN_EXPIRY_SECS);
         // We need to tickle the pump a little to set up the listen()
         pump_loop(mPump, 0.1f);
-        U32 count = mPump->runningChains();
+        auto count = mPump->runningChains();
         ensure_equals("server chain onboard", count, 1);
         LL_DEBUGS() << "** Server is up." << LL_ENDL;
 
diff --git a/indra/test/llbuffer_tut.cpp b/indra/test/llbuffer_tut.cpp
index a31870241c..330a4f288f 100644
--- a/indra/test/llbuffer_tut.cpp
+++ b/indra/test/llbuffer_tut.cpp
@@ -62,7 +62,7 @@ namespace tut
         ensure("LLSegment get functions failed", (0 == segment.getChannel() && NULL == segment.data() && 0 == segment.size()));
         segment.setChannel(50);
         ensure_equals("LLSegment setChannel() function failed", segment.getChannel(), 50);
-        ensure("LLSegment isOnChannel() function failed", (TRUE == segment.isOnChannel(50)));
+        ensure("LLSegment isOnChannel() function failed", (true == segment.isOnChannel(50)));
     }
 
     template<> template<>
@@ -74,7 +74,7 @@ namespace tut
         LLSegment segment(channel, (U8*)str, len);
         ensure("LLSegment get functions failed", (30 == segment.getChannel() && len == segment.size() && (U8*)str == segment.data()));
         ensure_memory_matches("LLSegment::data() failed",  segment.data(), segment.size(), (U8*)str, len);
-        ensure("LLSegment isOnChannel() function failed", (TRUE == segment.isOnChannel(channel)));
+        ensure("LLSegment isOnChannel() function failed", (true == segment.isOnChannel(channel)));
     }
 
     template<> template<>
@@ -91,27 +91,27 @@ namespace tut
         S32 requestSize;
 
         requestSize = 16384-1;
-        ensure("1. LLHeapBuffer createSegment failed", (TRUE == buf.createSegment(channel, requestSize, segment)) && segment.size() == requestSize);
+        ensure("1. LLHeapBuffer createSegment failed", (true == buf.createSegment(channel, requestSize, segment)) && segment.size() == requestSize);
         // second request for remainign 1 byte
 
         requestSize = 1;
-        ensure("2. LLHeapBuffer createSegment failed", (TRUE == buf.createSegment(channel, requestSize, segment)) && segment.size() == requestSize);
+        ensure("2. LLHeapBuffer createSegment failed", (true == buf.createSegment(channel, requestSize, segment)) && segment.size() == requestSize);
 
         // it should fail now.
         requestSize = 1;
-        ensure("3. LLHeapBuffer createSegment failed", (FALSE == buf.createSegment(channel, requestSize, segment)));
+        ensure("3. LLHeapBuffer createSegment failed", (false == buf.createSegment(channel, requestSize, segment)));
 
         LLHeapBuffer buf1(bigSize);
 
         // requst for more than default size but less than total sizeit should fail now.
         requestSize = 16384 + 1;
-        ensure("4. LLHeapBuffer createSegment failed", (TRUE == buf1.createSegment(channel, requestSize, segment)) && segment.size() == requestSize);
+        ensure("4. LLHeapBuffer createSegment failed", (true == buf1.createSegment(channel, requestSize, segment)) && segment.size() == requestSize);
 
         LLHeapBuffer buf2((U8*) str, smallSize);
         requestSize = smallSize;
-        ensure("5. LLHeapBuffer createSegment failed", (TRUE == buf2.createSegment(channel, requestSize, segment)) && segment.size() == requestSize && memcmp(segment.data(), (U8*) str, requestSize) == 0);
+        ensure("5. LLHeapBuffer createSegment failed", (true == buf2.createSegment(channel, requestSize, segment)) && segment.size() == requestSize && memcmp(segment.data(), (U8*) str, requestSize) == 0);
         requestSize = smallSize+1;
-        ensure("6. LLHeapBuffer createSegment failed", (FALSE == buf2.createSegment(channel, requestSize, segment)));
+        ensure("6. LLHeapBuffer createSegment failed", (false == buf2.createSegment(channel, requestSize, segment)));
     }
 
     //makeChannelConsumer()
@@ -128,7 +128,7 @@ namespace tut
     {
         LLBufferArray bufferArray;
         const char array[] = "SecondLife";
-        S32 len = strlen(array);
+        S32 len = static_cast<S32>(strlen(array));
         LLChannelDescriptors channelDescriptors = bufferArray.nextChannel();
         bufferArray.append(channelDescriptors.in(), (U8*)array, len);
         S32 count = bufferArray.countAfter(channelDescriptors.in(), NULL);
@@ -141,9 +141,9 @@ namespace tut
     {
         LLBufferArray bufferArray;
         const char array[] = "SecondLife";
-        S32 len = strlen(array);
+        S32 len = static_cast<S32>(strlen(array));
         const char array1[] = "LindenLabs";
-        S32 len1 = strlen(array1);
+        S32 len1 = static_cast<S32>(strlen(array1));
 
         std::string str(array1);
         str.append(array);
@@ -166,9 +166,9 @@ namespace tut
     {
         LLBufferArray bufferArray;
         const char array[] = "SecondLife";
-        S32 len = strlen(array);
+        S32 len = static_cast<S32>(strlen(array));
         const char array1[] = "LindenLabs";
-        S32 len1 = strlen(array1);
+        S32 len1 = static_cast<S32>(strlen(array1));
 
         std::string str(array);
         str.append(array1);
@@ -190,7 +190,7 @@ namespace tut
     {
         LLBufferArray bufferArray;
         const char array[] = "SecondLife";
-        S32 len = strlen(array) + 1;
+        S32 len = static_cast<S32>(strlen(array)) + 1;
         std::string str(array);
         LLChannelDescriptors channelDescriptors = bufferArray.nextChannel();
         bufferArray.append(channelDescriptors.in(), (U8*)array, len);
@@ -208,7 +208,7 @@ namespace tut
     void buffer_object_t::test<10>()
     {
         const char array[] = "SecondLife is a Virtual World";
-        S32 len = strlen(array);
+        S32 len = static_cast<S32>(strlen(array));
         LLBufferArray bufferArray;
         bufferArray.append(0, (U8*)array, len);
 
@@ -229,7 +229,7 @@ namespace tut
     void buffer_object_t::test<11>()
     {
         const char array[] = "SecondLife is a Virtual World";
-        S32 len = strlen(array);
+        S32 len = static_cast<S32>(strlen(array));
         LLBufferArray bufferArray;
         bufferArray.append(0, (U8*)array, len);
 
diff --git a/indra/test/llpermissions_tut.cpp b/indra/test/llpermissions_tut.cpp
index ebee89f9fa..1328939004 100644
--- a/indra/test/llpermissions_tut.cpp
+++ b/indra/test/llpermissions_tut.cpp
@@ -199,7 +199,7 @@ namespace tut
     {
         LLPermissions perm1;
         LLUUID uuid;
-        BOOL is_group_owned = FALSE;
+        bool is_group_owned = false;
         ensure("1:getOwnership:failed ", ! perm1.getOwnership(uuid,is_group_owned));
 
         LLPermissions perm;
@@ -262,7 +262,7 @@ namespace tut
     {
         LLPermissions perm;
         LLUUID agent;
-        BOOL set = 1;
+        bool set = true;
         U32 bits = PERM_TRANSFER | PERM_MODIFY;
         ensure("setBaseBits():failed ", perm.setBaseBits(agent, set, bits));
         ensure("setOwnerBits():failed ", perm.setOwnerBits(agent, set, bits));
@@ -278,7 +278,7 @@ namespace tut
         LLPermissions perm;
         LLUUID agent;
         LLUUID group("9c8eca51-53d5-42a7-bb58-cef070395db8");
-        BOOL set = 1;
+        bool set = true;
         U32 bits = 10;
         ensure("setGroupBits():failed ", perm.setGroupBits(agent,group, set, bits));
         ensure("setEveryoneBits():failed ", perm.setEveryoneBits(agent,group, set, bits));
diff --git a/indra/test/llpipeutil.cpp b/indra/test/llpipeutil.cpp
index c64cf21326..1dd4bdfa3c 100644
--- a/indra/test/llpipeutil.cpp
+++ b/indra/test/llpipeutil.cpp
@@ -60,7 +60,7 @@ LLIOPipe::EStatus LLPipeStringInjector::process_impl(
         LLSD& context,
         LLPumpIO* pump)
 {
-    buffer->append(channels.out(), (U8*) mString.data(), mString.size());
+    buffer->append(channels.out(), (U8*) mString.data(), static_cast<S32>(mString.size()));
     eos = true;
     return STATUS_DONE;
 }
diff --git a/indra/test/llsaleinfo_tut.cpp b/indra/test/llsaleinfo_tut.cpp
index 1a4ead00b6..1da7101aa3 100644
--- a/indra/test/llsaleinfo_tut.cpp
+++ b/indra/test/llsaleinfo_tut.cpp
@@ -54,7 +54,7 @@ namespace tut
         LLSaleInfo saleinfo1 = ll_sale_info_from_sd(llsd_obj1);
 
         ensure("1. The getSaleType() fn failed", LLSaleInfo::FS_COPY == llsaleinfo.getSaleType());
-        ensure("2. LLSaleInfo::isForSale() fn failed", TRUE == llsaleinfo.isForSale());
+        ensure("2. LLSaleInfo::isForSale() fn failed", true == llsaleinfo.isForSale());
         ensure("3. The getSalePrice() fn failed", sale_price == llsaleinfo.getSalePrice());
         ensure("4. The getCRC32() fn failed", 235833404 == llsaleinfo.getCRC32());
         ensure("5. LLSaleInfo::lookup(const char* name) fn failed", LLSaleInfo::FS_COPY == llsaleinfo.lookup(sale));
@@ -68,7 +68,7 @@ namespace tut
         saleinfo1 = ll_sale_info_from_sd(llsd_obj1);
 
         ensure("8. The getSaleType() and setSaleType() fn failed", LLSaleInfo::FS_ORIGINAL == llsaleinfo.getSaleType());
-        ensure("9. LLSaleInfo::isForSale() fn failed", TRUE == llsaleinfo.isForSale());
+        ensure("9. LLSaleInfo::isForSale() fn failed", true == llsaleinfo.isForSale());
         ensure("10. The getSalePrice() fn failed", 10000000 == llsaleinfo.getSalePrice());
         ensure("11. The getCRC32() fn failed", 127911702 == llsaleinfo.getCRC32());
         ensure("12. LLSaleInfo::lookup(const char* name) fn failed", LLSaleInfo::FS_CONTENTS == llsaleinfo.lookup(sale));
@@ -82,7 +82,7 @@ namespace tut
         saleinfo1 = ll_sale_info_from_sd(llsd_obj1);
 
         ensure("15. The getSaleType() and setSaleType() fn failed", LLSaleInfo::FS_CONTENTS == llsaleinfo.getSaleType());
-        ensure("16. LLSaleInfo::isForSale() fn failed", TRUE == llsaleinfo.isForSale());
+        ensure("16. LLSaleInfo::isForSale() fn failed", true == llsaleinfo.isForSale());
         ensure("17. The getSalePrice() fn failed", 55000550 == llsaleinfo.getSalePrice());
         ensure("18. The getCRC32() fn failed", 408735656 == llsaleinfo.getCRC32());
         ensure("19. LLSaleInfo::lookup(const char* name) fn failed", LLSaleInfo::FS_ORIGINAL == llsaleinfo.lookup(sale));
@@ -96,7 +96,7 @@ namespace tut
         saleinfo1 = ll_sale_info_from_sd(llsd_obj1);
 
         ensure("22. The getSaleType() and setSaleType() fn failed", LLSaleInfo::FS_NOT == llsaleinfo.getSaleType());
-        ensure("23. LLSaleInfo::isForSale() fn failed", FALSE == llsaleinfo.isForSale());
+        ensure("23. LLSaleInfo::isForSale() fn failed", false == llsaleinfo.isForSale());
         ensure("24. The getSalePrice() fn failed", 0 == llsaleinfo.getSalePrice());
         ensure("25. The getCRC32() fn failed", 0 == llsaleinfo.getCRC32());
         ensure("26. LLSaleInfo::lookup(const char* name) fn failed", LLSaleInfo::FS_NOT == llsaleinfo.lookup(sale));
@@ -116,7 +116,7 @@ namespace tut
         std::istringstream istream(ostream.str());
         LLSaleInfo llsaleinfo1;
         U32 perm_mask = 0;
-        BOOL has_perm_mask = FALSE;
+        bool has_perm_mask = false;
         llsaleinfo1.importLegacyStream(istream, has_perm_mask, perm_mask);
 
         ensure("importStream() fn failed ",
@@ -133,7 +133,7 @@ namespace tut
         LLSD sd_result = saleinfo.asLLSD();
 
         U32 perm_mask = 0 ;
-        BOOL has_perm_mask = FALSE;
+        bool has_perm_mask = false;
 
         LLSaleInfo saleinfo1;
         saleinfo1.fromLLSD( sd_result, has_perm_mask, perm_mask);
diff --git a/indra/test/llsdmessagebuilder_tut.cpp b/indra/test/llsdmessagebuilder_tut.cpp
index d85d460198..6804c3e29e 100644
--- a/indra/test/llsdmessagebuilder_tut.cpp
+++ b/indra/test/llsdmessagebuilder_tut.cpp
@@ -126,14 +126,14 @@ namespace tut
 
     template<> template<>
     void LLSDMessageBuilderTestObject::test<2>()
-         // BOOL
+         // bool
     {
-      BOOL outValue, inValue = TRUE;
+      bool outValue, inValue = true;
       LLSDMessageBuilder builder = defaultBuilder();
       builder.addBOOL("var", inValue);
       LLSDMessageReader reader = setReader(builder);
       reader.getBOOL("block", "var", outValue);
-      ensure_equals("Ensure BOOL", inValue, outValue);
+      ensure_equals("Ensure bool", inValue, outValue);
     }
 
     template<> template<>
@@ -688,13 +688,13 @@ namespace tut
     template<> template<>
     void LLSDMessageBuilderTestObject::test<39>()
     {
-      BOOL valueTrue = true;
-      BOOL valueFalse = false;
+      bool valueTrue = true;
+      bool valueFalse = false;
 
       LLMsgData* md = new LLMsgData("testMessage");
       LLMsgBlkData* mbd = new LLMsgBlkData("testBlock", 0);
-      addValue(mbd, (char *)"testBoolFalse", &valueFalse, MVT_BOOL, sizeof(BOOL));
-      addValue(mbd, (char *)"testBoolTrue", &valueTrue, MVT_BOOL, sizeof(BOOL));
+      addValue(mbd, (char *)"testBoolFalse", &valueFalse, MVT_BOOL, sizeof(bool));
+      addValue(mbd, (char *)"testBoolTrue", &valueTrue, MVT_BOOL, sizeof(bool));
       md->addBlock(mbd);
       LLSDMessageBuilder builder = defaultBuilder();
 
diff --git a/indra/test/llsdmessagereader_tut.cpp b/indra/test/llsdmessagereader_tut.cpp
index 1d39fed0cb..dd6520ea33 100644
--- a/indra/test/llsdmessagereader_tut.cpp
+++ b/indra/test/llsdmessagereader_tut.cpp
@@ -73,11 +73,11 @@ namespace tut
                                 const std::string& block,
                                 const std::string& var,
                                 S32 blocknum,
-                                BOOL expected)
+                                bool expected)
         {
             LLSDMessageReader msg;
             msg.setMessage("fakename", msg_data);
-            BOOL test_data;
+            bool test_data;
             msg.getBOOL(block.c_str(), var.c_str(), test_data, blocknum);
             ensure_equals(  "Ensure bool field", test_data, expected);
         }
@@ -118,8 +118,8 @@ namespace tut
     {
         LLSD message = LLSD::emptyMap();
         message["block1"] = LLSD::emptyArray();
-        BOOL bool_true = TRUE;
-        BOOL bool_false = FALSE;
+        bool bool_true = true;
+        bool bool_false = false;
         message["block1"][0] = LLSD::emptyMap();
         message["block1"][0]["BoolField1"] = bool_true;
         message["block1"][1] = LLSD::emptyMap();
@@ -127,9 +127,9 @@ namespace tut
         message["block1"][1]["BoolField2"] = bool_true;
 
         ensureMessageName("name3", message, "name3");
-        ensureBool(message, "block1", "BoolField1", 0, TRUE);
-        ensureBool(message, "block1", "BoolField1", 1, FALSE);
-        ensureBool(message, "block1", "BoolField2", 1, TRUE);
+        ensureBool(message, "block1", "BoolField1", 0, true);
+        ensureBool(message, "block1", "BoolField1", 1, false);
+        ensureBool(message, "block1", "BoolField2", 1, true);
         ensureNumberOfBlocks(message, "block1", 2);
         ensureMessageSize(message, 0);
     }
@@ -318,7 +318,7 @@ namespace tut
         inValue[1] = 1;
 
         LLSDMessageReader msg = testType(inValue);
-        msg.getBinaryData("block", "var", &(outValue[0]), inValue.size());
+        msg.getBinaryData("block", "var", &(outValue[0]), static_cast<S32>(inValue.size()));
         ensure_equals("Ensure Binary", outValue, inValue);
     }
 }
diff --git a/indra/test/llstreamtools_tut.cpp b/indra/test/llstreamtools_tut.cpp
index 68bd5e0ec9..970afb3b02 100644
--- a/indra/test/llstreamtools_tut.cpp
+++ b/indra/test/llstreamtools_tut.cpp
@@ -846,7 +846,7 @@ namespace tut
         char buf[255] = {0};
 
         fullread(is, buf, 255);
-        ensure_memory_matches("fullread: read with newlines", (void*) buf,  str.size()-1, (void*) str.c_str(), str.size()-1);
+        ensure_memory_matches("fullread: read with newlines", (void*) buf, static_cast<U32>(str.size())-1, (void*) str.c_str(), static_cast<U32>(str.size())-1);
 
         is.clear();
         is.str(str = "First Line.\nSecond Line\n");
diff --git a/indra/test/lltemplatemessagebuilder_tut.cpp b/indra/test/lltemplatemessagebuilder_tut.cpp
index 67bdbb09b3..ddf1c3dbcc 100644
--- a/indra/test/lltemplatemessagebuilder_tut.cpp
+++ b/indra/test/lltemplatemessagebuilder_tut.cpp
@@ -61,7 +61,7 @@ namespace tut
                                        1,
                                        0,
                                        0,
-                                       FALSE,
+                                       false,
                                        "notasharedsecret",
                                        NULL,
                                        false,
@@ -135,16 +135,16 @@ namespace tut
 
     template<> template<>
     void LLTemplateMessageBuilderTestObject::test<2>()
-         // BOOL
+         // bool
     {
         LLMessageTemplate messageTemplate = defaultTemplate();
         messageTemplate.addBlock(defaultBlock(MVT_BOOL, 1));
-        BOOL outValue, inValue = TRUE;
+        bool outValue, inValue = true;
         LLTemplateMessageBuilder* builder = defaultBuilder(messageTemplate);
         builder->addBOOL(_PREHASH_Test0, inValue);
         LLTemplateMessageReader* reader = setReader(messageTemplate, builder);
         reader->getBOOL(_PREHASH_Test0, _PREHASH_Test0, outValue);
-        ensure_equals("Ensure BOOL", inValue, outValue);
+        ensure_equals("Ensure bool", inValue, outValue);
         delete reader;
     }
 
@@ -591,17 +591,17 @@ namespace tut
 
     template<> template<>
     void LLTemplateMessageBuilderTestObject::test<26>()
-         // non-zero offset with BOOL
+         // non-zero offset with bool
     {
         LLMessageTemplate messageTemplate = defaultTemplate();
         messageTemplate.addBlock(defaultBlock(MVT_BOOL, 1));
-        BOOL outValue, inValue = TRUE;
+        bool outValue, inValue = true;
         LLTemplateMessageBuilder* builder = defaultBuilder(messageTemplate);
         builder->addBOOL(_PREHASH_Test0, inValue);
         LLTemplateMessageReader* reader = setReader(
             messageTemplate, builder, 1);
         reader->getBOOL(_PREHASH_Test0, _PREHASH_Test0, outValue);
-        ensure_equals("Ensure BOOL", inValue, outValue);
+        ensure_equals("Ensure bool", inValue, outValue);
         delete reader;
     }
 
diff --git a/indra/test/message_tut.cpp b/indra/test/message_tut.cpp
index 96308b54af..11cd710ef6 100644
--- a/indra/test/message_tut.cpp
+++ b/indra/test/message_tut.cpp
@@ -75,7 +75,7 @@ namespace tut
                                    1,
                                    0,
                                    0,
-                                   FALSE,
+                                   false,
                                    "notasharedsecret",
                                    NULL,
                                    false,